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 #ifdef MACOS_TRADITIONAL
973 /* ignore -e for Dev:Pseudo argument */
974 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
977 if (PL_euid != PL_uid || PL_egid != PL_gid)
978 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
980 PL_e_script = newSVpvn("",0);
981 filter_add(read_e_script, NULL);
984 sv_catpv(PL_e_script, s);
986 sv_catpv(PL_e_script, argv[1]);
990 Perl_croak(aTHX_ "No code specified for -e");
991 sv_catpv(PL_e_script, "\n");
994 case 'I': /* -I handled both here and in moreswitches() */
996 if (!*++s && (s=argv[1]) != Nullch) {
1001 STRLEN len = strlen(s);
1002 p = savepvn(s, len);
1003 incpush(p, TRUE, TRUE);
1004 sv_catpvn(sv, "-I", 2);
1005 sv_catpvn(sv, p, len);
1006 sv_catpvn(sv, " ", 1);
1010 Perl_croak(aTHX_ "No directory specified for -I");
1014 PL_preprocess = TRUE;
1024 PL_preambleav = newAV();
1025 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1027 PL_Sv = newSVpv("print myconfig();",0);
1029 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1031 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1033 sv_catpv(PL_Sv,"\" Compile-time options:");
1035 sv_catpv(PL_Sv," DEBUGGING");
1037 # ifdef MULTIPLICITY
1038 sv_catpv(PL_Sv," MULTIPLICITY");
1041 sv_catpv(PL_Sv," USE_THREADS");
1043 # ifdef USE_ITHREADS
1044 sv_catpv(PL_Sv," USE_ITHREADS");
1046 # ifdef USE_64_BIT_INT
1047 sv_catpv(PL_Sv," USE_64_BIT_INT");
1049 # ifdef USE_64_BIT_ALL
1050 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1052 # ifdef USE_LONG_DOUBLE
1053 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1055 # ifdef USE_LARGE_FILES
1056 sv_catpv(PL_Sv," USE_LARGE_FILES");
1059 sv_catpv(PL_Sv," USE_SOCKS");
1062 sv_catpv(PL_Sv," PERL_OBJECT");
1064 # ifdef PERL_IMPLICIT_CONTEXT
1065 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1067 # ifdef PERL_IMPLICIT_SYS
1068 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1070 sv_catpv(PL_Sv,"\\n\",");
1072 #if defined(LOCAL_PATCH_COUNT)
1073 if (LOCAL_PATCH_COUNT > 0) {
1075 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1076 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1077 if (PL_localpatches[i])
1078 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1082 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1085 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1087 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1090 sv_catpv(PL_Sv, "; \
1092 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1093 print \" \\%ENV:\\n @env\\n\" if @env; \
1094 print \" \\@INC:\\n @INC\\n\";");
1097 PL_Sv = newSVpv("config_vars(qw(",0);
1098 sv_catpv(PL_Sv, ++s);
1099 sv_catpv(PL_Sv, "))");
1102 av_push(PL_preambleav, PL_Sv);
1103 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1106 PL_doextract = TRUE;
1114 if (!*++s || isSPACE(*s)) {
1118 /* catch use of gnu style long options */
1119 if (strEQ(s, "version")) {
1123 if (strEQ(s, "help")) {
1130 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1136 #ifndef SECURE_INTERNAL_GETENV
1139 (s = PerlEnv_getenv("PERL5OPT")))
1143 if (*s == '-' && *(s+1) == 'T')
1156 if (!strchr("DIMUdmw", *s))
1157 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1158 s = moreswitches(s);
1164 scriptname = argv[0];
1167 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1169 else if (scriptname == Nullch) {
1171 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1179 open_script(scriptname,dosearch,sv,&fdscript);
1181 validate_suid(validarg, scriptname,fdscript);
1184 #if defined(SIGCHLD) || defined(SIGCLD)
1187 # define SIGCHLD SIGCLD
1189 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1190 if (sigstate == SIG_IGN) {
1191 if (ckWARN(WARN_SIGNAL))
1192 Perl_warner(aTHX_ WARN_SIGNAL,
1193 "Can't ignore signal CHLD, forcing to default");
1194 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1200 #ifdef MACOS_TRADITIONAL
1201 if (PL_doextract || gMacPerl_AlwaysExtract) {
1206 if (cddir && PerlDir_chdir(cddir) < 0)
1207 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1211 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1212 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1213 CvUNIQUE_on(PL_compcv);
1215 PL_comppad = newAV();
1216 av_push(PL_comppad, Nullsv);
1217 PL_curpad = AvARRAY(PL_comppad);
1218 PL_comppad_name = newAV();
1219 PL_comppad_name_fill = 0;
1220 PL_min_intro_pending = 0;
1223 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1224 PL_curpad[0] = (SV*)newAV();
1225 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1226 CvOWNER(PL_compcv) = 0;
1227 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1228 MUTEX_INIT(CvMUTEXP(PL_compcv));
1229 #endif /* USE_THREADS */
1231 comppadlist = newAV();
1232 AvREAL_off(comppadlist);
1233 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1234 av_store(comppadlist, 1, (SV*)PL_comppad);
1235 CvPADLIST(PL_compcv) = comppadlist;
1237 boot_core_UNIVERSAL();
1239 boot_core_xsutils();
1243 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1245 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__)
1254 init_predump_symbols();
1255 /* init_postdump_symbols not currently designed to be called */
1256 /* more than once (ENV isn't cleared first, for example) */
1257 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1259 init_postdump_symbols(argc,argv,env);
1263 /* now parse the script */
1265 SETERRNO(0,SS$_NORMAL);
1267 #ifdef MACOS_TRADITIONAL
1268 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1270 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1272 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1273 MacPerl_MPWFileName(PL_origfilename));
1277 if (yyparse() || PL_error_count) {
1279 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1281 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1286 CopLINE_set(PL_curcop, 0);
1287 PL_curstash = PL_defstash;
1288 PL_preprocess = FALSE;
1290 SvREFCNT_dec(PL_e_script);
1291 PL_e_script = Nullsv;
1294 /* now that script is parsed, we can modify record separator */
1295 SvREFCNT_dec(PL_rs);
1296 PL_rs = SvREFCNT_inc(PL_nrs);
1297 sv_setsv(get_sv("/", TRUE), PL_rs);
1302 SAVECOPFILE(PL_curcop);
1303 SAVECOPLINE(PL_curcop);
1304 gv_check(PL_defstash);
1311 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1312 dump_mstats("after compilation:");
1321 =for apidoc perl_run
1323 Tells a Perl interpreter to run. See L<perlembed>.
1339 oldscope = PL_scopestack_ix;
1341 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1343 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1349 cxstack_ix = -1; /* start context stack again */
1351 case 0: /* normal completion */
1352 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1357 case 2: /* my_exit() */
1358 while (PL_scopestack_ix > oldscope)
1361 PL_curstash = PL_defstash;
1362 if (PL_endav && !PL_minus_c)
1363 call_list(oldscope, PL_endav);
1365 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1366 dump_mstats("after execution: ");
1368 ret = STATUS_NATIVE_EXPORT;
1372 POPSTACK_TO(PL_mainstack);
1375 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1385 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1387 S_vrun_body(pTHX_ va_list args)
1389 I32 oldscope = va_arg(args, I32);
1391 return run_body(oldscope);
1397 S_run_body(pTHX_ I32 oldscope)
1401 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1402 PL_sawampersand ? "Enabling" : "Omitting"));
1404 if (!PL_restartop) {
1405 DEBUG_x(dump_all());
1406 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1407 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1411 #ifdef MACOS_TRADITIONAL
1412 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1414 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1418 if (PERLDB_SINGLE && PL_DBsingle)
1419 sv_setiv(PL_DBsingle, 1);
1421 call_list(oldscope, PL_initav);
1427 PL_op = PL_restartop;
1431 else if (PL_main_start) {
1432 CvDEPTH(PL_main_cv) = 1;
1433 PL_op = PL_main_start;
1443 =for apidoc p||get_sv
1445 Returns the SV of the specified Perl scalar. If C<create> is set and the
1446 Perl variable does not exist then it will be created. If C<create> is not
1447 set and the variable does not exist then NULL is returned.
1453 Perl_get_sv(pTHX_ const char *name, I32 create)
1457 if (name[1] == '\0' && !isALPHA(name[0])) {
1458 PADOFFSET tmp = find_threadsv(name);
1459 if (tmp != NOT_IN_PAD) {
1461 return THREADSV(tmp);
1464 #endif /* USE_THREADS */
1465 gv = gv_fetchpv(name, create, SVt_PV);
1472 =for apidoc p||get_av
1474 Returns the AV of the specified Perl array. If C<create> is set and the
1475 Perl variable does not exist then it will be created. If C<create> is not
1476 set and the variable does not exist then NULL is returned.
1482 Perl_get_av(pTHX_ const char *name, I32 create)
1484 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1493 =for apidoc p||get_hv
1495 Returns the HV of the specified Perl hash. If C<create> is set and the
1496 Perl variable does not exist then it will be created. If C<create> is not
1497 set and the variable does not exist then NULL is returned.
1503 Perl_get_hv(pTHX_ const char *name, I32 create)
1505 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1514 =for apidoc p||get_cv
1516 Returns the CV of the specified Perl subroutine. If C<create> is set and
1517 the Perl subroutine does not exist then it will be declared (which has the
1518 same effect as saying C<sub name;>). If C<create> is not set and the
1519 subroutine does not exist then NULL is returned.
1525 Perl_get_cv(pTHX_ const char *name, I32 create)
1527 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1528 /* XXX unsafe for threads if eval_owner isn't held */
1529 /* XXX this is probably not what they think they're getting.
1530 * It has the same effect as "sub name;", i.e. just a forward
1532 if (create && !GvCVu(gv))
1533 return newSUB(start_subparse(FALSE, 0),
1534 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1542 /* Be sure to refetch the stack pointer after calling these routines. */
1545 =for apidoc p||call_argv
1547 Performs a callback to the specified Perl sub. See L<perlcall>.
1553 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1555 /* See G_* flags in cop.h */
1556 /* null terminated arg list */
1563 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1568 return call_pv(sub_name, flags);
1572 =for apidoc p||call_pv
1574 Performs a callback to the specified Perl sub. See L<perlcall>.
1580 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1581 /* name of the subroutine */
1582 /* See G_* flags in cop.h */
1584 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1588 =for apidoc p||call_method
1590 Performs a callback to the specified Perl method. The blessed object must
1591 be on the stack. See L<perlcall>.
1597 Perl_call_method(pTHX_ const char *methname, I32 flags)
1598 /* name of the subroutine */
1599 /* See G_* flags in cop.h */
1601 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1604 /* May be called with any of a CV, a GV, or an SV containing the name. */
1606 =for apidoc p||call_sv
1608 Performs a callback to the Perl sub whose name is in the SV. See
1615 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1616 /* See G_* flags in cop.h */
1619 LOGOP myop; /* fake syntax tree node */
1624 bool oldcatch = CATCH_GET;
1629 if (flags & G_DISCARD) {
1634 Zero(&myop, 1, LOGOP);
1635 myop.op_next = Nullop;
1636 if (!(flags & G_NOARGS))
1637 myop.op_flags |= OPf_STACKED;
1638 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1639 (flags & G_ARRAY) ? OPf_WANT_LIST :
1644 EXTEND(PL_stack_sp, 1);
1645 *++PL_stack_sp = sv;
1647 oldscope = PL_scopestack_ix;
1649 if (PERLDB_SUB && PL_curstash != PL_debstash
1650 /* Handle first BEGIN of -d. */
1651 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1652 /* Try harder, since this may have been a sighandler, thus
1653 * curstash may be meaningless. */
1654 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1655 && !(flags & G_NODEBUG))
1656 PL_op->op_private |= OPpENTERSUB_DB;
1658 if (flags & G_METHOD) {
1659 Zero(&method_op, 1, UNOP);
1660 method_op.op_next = PL_op;
1661 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1662 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1663 PL_op = (OP*)&method_op;
1666 if (!(flags & G_EVAL)) {
1668 call_body((OP*)&myop, FALSE);
1669 retval = PL_stack_sp - (PL_stack_base + oldmark);
1670 CATCH_SET(oldcatch);
1673 myop.op_other = (OP*)&myop;
1675 /* we're trying to emulate pp_entertry() here */
1677 register PERL_CONTEXT *cx;
1678 I32 gimme = GIMME_V;
1683 push_return(Nullop);
1684 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1686 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1688 PL_in_eval = EVAL_INEVAL;
1689 if (flags & G_KEEPERR)
1690 PL_in_eval |= EVAL_KEEPERR;
1696 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1698 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1705 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1707 call_body((OP*)&myop, FALSE);
1709 retval = PL_stack_sp - (PL_stack_base + oldmark);
1710 if (!(flags & G_KEEPERR))
1717 /* my_exit() was called */
1718 PL_curstash = PL_defstash;
1721 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1722 Perl_croak(aTHX_ "Callback called exit");
1727 PL_op = PL_restartop;
1731 PL_stack_sp = PL_stack_base + oldmark;
1732 if (flags & G_ARRAY)
1736 *++PL_stack_sp = &PL_sv_undef;
1741 if (PL_scopestack_ix > oldscope) {
1745 register PERL_CONTEXT *cx;
1757 if (flags & G_DISCARD) {
1758 PL_stack_sp = PL_stack_base + oldmark;
1767 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1769 S_vcall_body(pTHX_ va_list args)
1771 OP *myop = va_arg(args, OP*);
1772 int is_eval = va_arg(args, int);
1774 call_body(myop, is_eval);
1780 S_call_body(pTHX_ OP *myop, int is_eval)
1784 if (PL_op == myop) {
1786 PL_op = Perl_pp_entereval(aTHX);
1788 PL_op = Perl_pp_entersub(aTHX);
1794 /* Eval a string. The G_EVAL flag is always assumed. */
1797 =for apidoc p||eval_sv
1799 Tells Perl to C<eval> the string in the SV.
1805 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1807 /* See G_* flags in cop.h */
1810 UNOP myop; /* fake syntax tree node */
1811 I32 oldmark = SP - PL_stack_base;
1818 if (flags & G_DISCARD) {
1825 Zero(PL_op, 1, UNOP);
1826 EXTEND(PL_stack_sp, 1);
1827 *++PL_stack_sp = sv;
1828 oldscope = PL_scopestack_ix;
1830 if (!(flags & G_NOARGS))
1831 myop.op_flags = OPf_STACKED;
1832 myop.op_next = Nullop;
1833 myop.op_type = OP_ENTEREVAL;
1834 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1835 (flags & G_ARRAY) ? OPf_WANT_LIST :
1837 if (flags & G_KEEPERR)
1838 myop.op_flags |= OPf_SPECIAL;
1840 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1842 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1849 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1851 call_body((OP*)&myop,TRUE);
1853 retval = PL_stack_sp - (PL_stack_base + oldmark);
1854 if (!(flags & G_KEEPERR))
1861 /* my_exit() was called */
1862 PL_curstash = PL_defstash;
1865 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1866 Perl_croak(aTHX_ "Callback called exit");
1871 PL_op = PL_restartop;
1875 PL_stack_sp = PL_stack_base + oldmark;
1876 if (flags & G_ARRAY)
1880 *++PL_stack_sp = &PL_sv_undef;
1886 if (flags & G_DISCARD) {
1887 PL_stack_sp = PL_stack_base + oldmark;
1897 =for apidoc p||eval_pv
1899 Tells Perl to C<eval> the given string and return an SV* result.
1905 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1908 SV* sv = newSVpv(p, 0);
1911 eval_sv(sv, G_SCALAR);
1918 if (croak_on_error && SvTRUE(ERRSV)) {
1920 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1926 /* Require a module. */
1929 =for apidoc p||require_pv
1931 Tells Perl to C<require> a module.
1937 Perl_require_pv(pTHX_ const char *pv)
1941 PUSHSTACKi(PERLSI_REQUIRE);
1943 sv = sv_newmortal();
1944 sv_setpv(sv, "require '");
1947 eval_sv(sv, G_DISCARD);
1953 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
1957 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
1958 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1962 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
1964 /* This message really ought to be max 23 lines.
1965 * Removed -h because the user already knows that opton. Others? */
1967 static char *usage_msg[] = {
1968 "-0[octal] specify record separator (\\0, if no argument)",
1969 "-a autosplit mode with -n or -p (splits $_ into @F)",
1970 "-C enable native wide character system interfaces",
1971 "-c check syntax only (runs BEGIN and CHECK blocks)",
1972 "-d[:debugger] run program under debugger",
1973 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1974 "-e 'command' one line of program (several -e's allowed, omit programfile)",
1975 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
1976 "-i[extension] edit <> files in place (makes backup if extension supplied)",
1977 "-Idirectory specify @INC/#include directory (several -I's allowed)",
1978 "-l[octal] enable line ending processing, specifies line terminator",
1979 "-[mM][-]module execute `use/no module...' before executing program",
1980 "-n assume 'while (<>) { ... }' loop around program",
1981 "-p assume loop like -n but print line also, like sed",
1982 "-P run program through C preprocessor before compilation",
1983 "-s enable rudimentary parsing for switches after programfile",
1984 "-S look for programfile using PATH environment variable",
1985 "-T enable tainting checks",
1986 "-u dump core after parsing program",
1987 "-U allow unsafe operations",
1988 "-v print version, subversion (includes VERY IMPORTANT perl info)",
1989 "-V[:variable] print configuration summary (or a single Config.pm variable)",
1990 "-w enable many useful warnings (RECOMMENDED)",
1991 "-W enable all warnings",
1992 "-X disable all warnings",
1993 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
1997 char **p = usage_msg;
1999 PerlIO_printf(PerlIO_stdout(),
2000 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2003 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2006 /* This routine handles any switches that can be given during run */
2009 Perl_moreswitches(pTHX_ char *s)
2018 numlen = 0; /* disallow underscores */
2019 rschar = (U32)scan_oct(s, 4, &numlen);
2020 SvREFCNT_dec(PL_nrs);
2021 if (rschar & ~((U8)~0))
2022 PL_nrs = &PL_sv_undef;
2023 else if (!rschar && numlen >= 2)
2024 PL_nrs = newSVpvn("", 0);
2027 PL_nrs = newSVpvn(&ch, 1);
2032 PL_widesyscalls = TRUE;
2037 PL_splitstr = savepv(s + 1);
2051 if (*s == ':' || *s == '=') {
2052 my_setenv("PERL5DB", Perl_form(aTHX_ "use Devel::%s;", ++s));
2056 PL_perldb = PERLDB_ALL;
2064 if (isALPHA(s[1])) {
2065 static char debopts[] = "psltocPmfrxuLHXDS";
2068 for (s++; *s && (d = strchr(debopts,*s)); s++)
2069 PL_debug |= 1 << (d - debopts);
2072 PL_debug = atoi(s+1);
2073 for (s++; isDIGIT(*s); s++) ;
2075 PL_debug |= 0x80000000;
2078 if (ckWARN_d(WARN_DEBUGGING))
2079 Perl_warner(aTHX_ WARN_DEBUGGING,
2080 "Recompile perl with -DDEBUGGING to use -D switch\n");
2081 for (s++; isALNUM(*s); s++) ;
2087 usage(PL_origargv[0]);
2091 Safefree(PL_inplace);
2092 PL_inplace = savepv(s+1);
2094 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2097 if (*s == '-') /* Additional switches on #! line. */
2101 case 'I': /* -I handled both here and in parse_perl() */
2104 while (*s && isSPACE(*s))
2109 /* ignore trailing spaces (possibly followed by other switches) */
2111 for (e = p; *e && !isSPACE(*e); e++) ;
2115 } while (*p && *p != '-');
2116 e = savepvn(s, e-s);
2117 incpush(e, TRUE, TRUE);
2124 Perl_croak(aTHX_ "No directory specified for -I");
2132 PL_ors = savepv("\n");
2134 numlen = 0; /* disallow underscores */
2135 *PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2140 if (RsPARA(PL_nrs)) {
2145 PL_ors = SvPV(PL_nrs, PL_orslen);
2146 PL_ors = savepvn(PL_ors, PL_orslen);
2150 forbid_setid("-M"); /* XXX ? */
2153 forbid_setid("-m"); /* XXX ? */
2158 /* -M-foo == 'no foo' */
2159 if (*s == '-') { use = "no "; ++s; }
2160 sv = newSVpv(use,0);
2162 /* We allow -M'Module qw(Foo Bar)' */
2163 while(isALNUM(*s) || *s==':') ++s;
2165 sv_catpv(sv, start);
2166 if (*(start-1) == 'm') {
2168 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2169 sv_catpv( sv, " ()");
2173 Perl_croak(aTHX_ "Module name required with -%c option",
2175 sv_catpvn(sv, start, s-start);
2176 sv_catpv(sv, " split(/,/,q{");
2182 PL_preambleav = newAV();
2183 av_push(PL_preambleav, sv);
2186 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2198 PL_doswitches = TRUE;
2203 Perl_croak(aTHX_ "Too late for \"-T\" option");
2207 #ifdef MACOS_TRADITIONAL
2208 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2210 PL_do_undump = TRUE;
2218 PerlIO_printf(PerlIO_stdout(),
2219 Perl_form(aTHX_ "\nThis is perl, v%vd built for %s",
2220 PL_patchlevel, ARCHNAME));
2221 #if defined(LOCAL_PATCH_COUNT)
2222 if (LOCAL_PATCH_COUNT > 0)
2223 PerlIO_printf(PerlIO_stdout(),
2224 "\n(with %d registered patch%s, "
2225 "see perl -V for more detail)",
2226 (int)LOCAL_PATCH_COUNT,
2227 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2230 PerlIO_printf(PerlIO_stdout(),
2231 "\n\nCopyright 1987-2000, Larry Wall\n");
2233 PerlIO_printf(PerlIO_stdout(),
2234 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2237 PerlIO_printf(PerlIO_stdout(),
2238 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2239 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2242 PerlIO_printf(PerlIO_stdout(),
2243 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2244 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2247 PerlIO_printf(PerlIO_stdout(),
2248 "atariST series port, ++jrb bammi@cadence.com\n");
2251 PerlIO_printf(PerlIO_stdout(),
2252 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2255 PerlIO_printf(PerlIO_stdout(),
2256 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
2259 PerlIO_printf(PerlIO_stdout(),
2260 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2263 PerlIO_printf(PerlIO_stdout(),
2264 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2267 PerlIO_printf(PerlIO_stdout(),
2268 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2271 PerlIO_printf(PerlIO_stdout(),
2272 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2275 PerlIO_printf(PerlIO_stdout(),
2276 "MiNT port by Guido Flohr, 1997-1999\n");
2279 PerlIO_printf(PerlIO_stdout(),
2280 "EPOC port by Olaf Flebbe, 1999-2000\n");
2282 #ifdef BINARY_BUILD_NOTICE
2283 BINARY_BUILD_NOTICE;
2285 PerlIO_printf(PerlIO_stdout(),
2287 Perl may be copied only under the terms of either the Artistic License or the\n\
2288 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
2289 Complete documentation for Perl, including FAQ lists, should be found on\n\
2290 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2291 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2294 if (! (PL_dowarn & G_WARN_ALL_MASK))
2295 PL_dowarn |= G_WARN_ON;
2299 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2300 PL_compiling.cop_warnings = pWARN_ALL ;
2304 PL_dowarn = G_WARN_ALL_OFF;
2305 PL_compiling.cop_warnings = pWARN_NONE ;
2310 if (s[1] == '-') /* Additional switches on #! line. */
2315 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2321 #ifdef ALTERNATE_SHEBANG
2322 case 'S': /* OS/2 needs -S on "extproc" line. */
2330 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2335 /* compliments of Tom Christiansen */
2337 /* unexec() can be found in the Gnu emacs distribution */
2338 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2341 Perl_my_unexec(pTHX)
2349 prog = newSVpv(BIN_EXP, 0);
2350 sv_catpv(prog, "/perl");
2351 file = newSVpv(PL_origfilename, 0);
2352 sv_catpv(file, ".perldump");
2354 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2355 /* unexec prints msg to stderr in case of failure */
2356 PerlProc_exit(status);
2359 # include <lib$routines.h>
2360 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2362 ABORT(); /* for use with undump */
2367 /* initialize curinterp */
2372 #ifdef PERL_OBJECT /* XXX kludge */
2375 PL_chopset = " \n-"; \
2376 PL_copline = NOLINE; \
2377 PL_curcop = &PL_compiling;\
2378 PL_curcopdb = NULL; \
2380 PL_dumpindent = 4; \
2381 PL_laststatval = -1; \
2382 PL_laststype = OP_STAT; \
2383 PL_maxscream = -1; \
2384 PL_maxsysfd = MAXSYSFD; \
2385 PL_statname = Nullsv; \
2386 PL_tmps_floor = -1; \
2388 PL_op_mask = NULL; \
2389 PL_laststatval = -1; \
2390 PL_laststype = OP_STAT; \
2391 PL_mess_sv = Nullsv; \
2392 PL_splitstr = " "; \
2393 PL_generation = 100; \
2394 PL_exitlist = NULL; \
2395 PL_exitlistlen = 0; \
2397 PL_in_clean_objs = FALSE; \
2398 PL_in_clean_all = FALSE; \
2399 PL_profiledata = NULL; \
2401 PL_rsfp_filters = Nullav; \
2406 # ifdef MULTIPLICITY
2407 # define PERLVAR(var,type)
2408 # define PERLVARA(var,n,type)
2409 # if defined(PERL_IMPLICIT_CONTEXT)
2410 # if defined(USE_THREADS)
2411 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2412 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2413 # else /* !USE_THREADS */
2414 # define PERLVARI(var,type,init) aTHX->var = init;
2415 # define PERLVARIC(var,type,init) aTHX->var = init;
2416 # endif /* USE_THREADS */
2418 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2419 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2421 # include "intrpvar.h"
2422 # ifndef USE_THREADS
2423 # include "thrdvar.h"
2430 # define PERLVAR(var,type)
2431 # define PERLVARA(var,n,type)
2432 # define PERLVARI(var,type,init) PL_##var = init;
2433 # define PERLVARIC(var,type,init) PL_##var = init;
2434 # include "intrpvar.h"
2435 # ifndef USE_THREADS
2436 # include "thrdvar.h"
2448 S_init_main_stash(pTHX)
2453 /* Note that strtab is a rather special HV. Assumptions are made
2454 about not iterating on it, and not adding tie magic to it.
2455 It is properly deallocated in perl_destruct() */
2456 PL_strtab = newHV();
2458 MUTEX_INIT(&PL_strtab_mutex);
2460 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2461 hv_ksplit(PL_strtab, 512);
2463 PL_curstash = PL_defstash = newHV();
2464 PL_curstname = newSVpvn("main",4);
2465 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2466 SvREFCNT_dec(GvHV(gv));
2467 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2469 HvNAME(PL_defstash) = savepv("main");
2470 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2471 GvMULTI_on(PL_incgv);
2472 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2473 GvMULTI_on(PL_hintgv);
2474 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2475 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2476 GvMULTI_on(PL_errgv);
2477 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2478 GvMULTI_on(PL_replgv);
2479 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2480 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2481 sv_setpvn(ERRSV, "", 0);
2482 PL_curstash = PL_defstash;
2483 CopSTASH_set(&PL_compiling, PL_defstash);
2484 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2485 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2486 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2487 /* We must init $/ before switches are processed. */
2488 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2492 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2499 PL_origfilename = savepv("-e");
2502 /* if find_script() returns, it returns a malloc()-ed value */
2503 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2505 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2506 char *s = scriptname + 8;
2507 *fdscript = atoi(s);
2511 scriptname = savepv(s + 1);
2512 Safefree(PL_origfilename);
2513 PL_origfilename = scriptname;
2518 CopFILE_set(PL_curcop, PL_origfilename);
2519 if (strEQ(PL_origfilename,"-"))
2521 if (*fdscript >= 0) {
2522 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2523 #if defined(HAS_FCNTL) && defined(F_SETFD)
2525 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2528 else if (PL_preprocess) {
2529 char *cpp_cfg = CPPSTDIN;
2530 SV *cpp = newSVpvn("",0);
2531 SV *cmd = NEWSV(0,0);
2533 if (strEQ(cpp_cfg, "cppstdin"))
2534 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2535 sv_catpv(cpp, cpp_cfg);
2537 sv_catpvn(sv, "-I", 2);
2538 sv_catpv(sv,PRIVLIB_EXP);
2540 #if defined(MSDOS) || defined(WIN32)
2541 Perl_sv_setpvf(aTHX_ cmd, "\
2542 sed %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",
2554 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2557 Perl_sv_setpvf(aTHX_ cmd, "\
2558 %s %s -e '/^[^#]/b' \
2559 -e '/^#[ ]*include[ ]/b' \
2560 -e '/^#[ ]*define[ ]/b' \
2561 -e '/^#[ ]*if[ ]/b' \
2562 -e '/^#[ ]*ifdef[ ]/b' \
2563 -e '/^#[ ]*ifndef[ ]/b' \
2564 -e '/^#[ ]*else/b' \
2565 -e '/^#[ ]*elif[ ]/b' \
2566 -e '/^#[ ]*undef[ ]/b' \
2567 -e '/^#[ ]*endif/b' \
2569 %s | %"SVf" %"SVf" %s",
2571 Perl_sv_setpvf(aTHX_ cmd, "\
2572 %s %s -e '/^[^#]/b' \
2573 -e '/^#[ ]*include[ ]/b' \
2574 -e '/^#[ ]*define[ ]/b' \
2575 -e '/^#[ ]*if[ ]/b' \
2576 -e '/^#[ ]*ifdef[ ]/b' \
2577 -e '/^#[ ]*ifndef[ ]/b' \
2578 -e '/^#[ ]*else/b' \
2579 -e '/^#[ ]*elif[ ]/b' \
2580 -e '/^#[ ]*undef[ ]/b' \
2581 -e '/^#[ ]*endif/b' \
2583 %s | %"SVf" -C %"SVf" %s",
2590 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2592 scriptname, cpp, sv, CPPMINUS);
2593 PL_doextract = FALSE;
2594 #ifdef IAMSUID /* actually, this is caught earlier */
2595 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2597 (void)seteuid(PL_uid); /* musn't stay setuid root */
2600 (void)setreuid((Uid_t)-1, PL_uid);
2602 #ifdef HAS_SETRESUID
2603 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2605 PerlProc_setuid(PL_uid);
2609 if (PerlProc_geteuid() != PL_uid)
2610 Perl_croak(aTHX_ "Can't do seteuid!\n");
2612 #endif /* IAMSUID */
2613 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2617 else if (!*scriptname) {
2618 forbid_setid("program input from stdin");
2619 PL_rsfp = PerlIO_stdin();
2622 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2623 #if defined(HAS_FCNTL) && defined(F_SETFD)
2625 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2630 #ifndef IAMSUID /* in case script is not readable before setuid */
2632 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2633 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2636 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2637 (int)PERL_REVISION, (int)PERL_VERSION,
2638 (int)PERL_SUBVERSION), PL_origargv);
2639 Perl_croak(aTHX_ "Can't do setuid\n");
2643 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2644 CopFILE(PL_curcop), Strerror(errno));
2649 * I_SYSSTATVFS HAS_FSTATVFS
2651 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2652 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2653 * here so that metaconfig picks them up. */
2657 S_fd_on_nosuid_fs(pTHX_ int fd)
2659 int check_okay = 0; /* able to do all the required sys/libcalls */
2660 int on_nosuid = 0; /* the fd is on a nosuid fs */
2662 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2663 * fstatvfs() is UNIX98.
2664 * fstatfs() is 4.3 BSD.
2665 * ustat()+getmnt() is pre-4.3 BSD.
2666 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2667 * an irrelevant filesystem while trying to reach the right one.
2670 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2672 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2673 defined(HAS_FSTATVFS)
2674 # define FD_ON_NOSUID_CHECK_OKAY
2675 struct statvfs stfs;
2677 check_okay = fstatvfs(fd, &stfs) == 0;
2678 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2679 # endif /* fstatvfs */
2681 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2682 defined(PERL_MOUNT_NOSUID) && \
2683 defined(HAS_FSTATFS) && \
2684 defined(HAS_STRUCT_STATFS) && \
2685 defined(HAS_STRUCT_STATFS_F_FLAGS)
2686 # define FD_ON_NOSUID_CHECK_OKAY
2689 check_okay = fstatfs(fd, &stfs) == 0;
2690 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2691 # endif /* fstatfs */
2693 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2694 defined(PERL_MOUNT_NOSUID) && \
2695 defined(HAS_FSTAT) && \
2696 defined(HAS_USTAT) && \
2697 defined(HAS_GETMNT) && \
2698 defined(HAS_STRUCT_FS_DATA) && \
2700 # define FD_ON_NOSUID_CHECK_OKAY
2703 if (fstat(fd, &fdst) == 0) {
2705 if (ustat(fdst.st_dev, &us) == 0) {
2707 /* NOSTAT_ONE here because we're not examining fields which
2708 * vary between that case and STAT_ONE. */
2709 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2710 size_t cmplen = sizeof(us.f_fname);
2711 if (sizeof(fsd.fd_req.path) < cmplen)
2712 cmplen = sizeof(fsd.fd_req.path);
2713 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2714 fdst.st_dev == fsd.fd_req.dev) {
2716 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2722 # endif /* fstat+ustat+getmnt */
2724 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2725 defined(HAS_GETMNTENT) && \
2726 defined(HAS_HASMNTOPT) && \
2727 defined(MNTOPT_NOSUID)
2728 # define FD_ON_NOSUID_CHECK_OKAY
2729 FILE *mtab = fopen("/etc/mtab", "r");
2730 struct mntent *entry;
2731 struct stat stb, fsb;
2733 if (mtab && (fstat(fd, &stb) == 0)) {
2734 while (entry = getmntent(mtab)) {
2735 if (stat(entry->mnt_dir, &fsb) == 0
2736 && fsb.st_dev == stb.st_dev)
2738 /* found the filesystem */
2740 if (hasmntopt(entry, MNTOPT_NOSUID))
2743 } /* A single fs may well fail its stat(). */
2748 # endif /* getmntent+hasmntopt */
2751 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2754 #endif /* IAMSUID */
2757 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2763 /* do we need to emulate setuid on scripts? */
2765 /* This code is for those BSD systems that have setuid #! scripts disabled
2766 * in the kernel because of a security problem. Merely defining DOSUID
2767 * in perl will not fix that problem, but if you have disabled setuid
2768 * scripts in the kernel, this will attempt to emulate setuid and setgid
2769 * on scripts that have those now-otherwise-useless bits set. The setuid
2770 * root version must be called suidperl or sperlN.NNN. If regular perl
2771 * discovers that it has opened a setuid script, it calls suidperl with
2772 * the same argv that it had. If suidperl finds that the script it has
2773 * just opened is NOT setuid root, it sets the effective uid back to the
2774 * uid. We don't just make perl setuid root because that loses the
2775 * effective uid we had before invoking perl, if it was different from the
2778 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2779 * be defined in suidperl only. suidperl must be setuid root. The
2780 * Configure script will set this up for you if you want it.
2787 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2788 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2789 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2794 #ifndef HAS_SETREUID
2795 /* On this access check to make sure the directories are readable,
2796 * there is actually a small window that the user could use to make
2797 * filename point to an accessible directory. So there is a faint
2798 * chance that someone could execute a setuid script down in a
2799 * non-accessible directory. I don't know what to do about that.
2800 * But I don't think it's too important. The manual lies when
2801 * it says access() is useful in setuid programs.
2803 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2804 Perl_croak(aTHX_ "Permission denied");
2806 /* If we can swap euid and uid, then we can determine access rights
2807 * with a simple stat of the file, and then compare device and
2808 * inode to make sure we did stat() on the same file we opened.
2809 * Then we just have to make sure he or she can execute it.
2812 struct stat tmpstatbuf;
2816 setreuid(PL_euid,PL_uid) < 0
2819 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2822 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2823 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2824 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2825 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2826 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2827 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2828 Perl_croak(aTHX_ "Permission denied");
2830 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2831 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2832 (void)PerlIO_close(PL_rsfp);
2833 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2834 PerlIO_printf(PL_rsfp,
2835 "User %"Uid_t_f" tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2836 (Filename of set-id script was %s, uid %"Uid_t_f" gid %"Gid_t_f".)\n\nSincerely,\nperl\n",
2837 PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2838 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
2840 PL_statbuf.st_uid, PL_statbuf.st_gid);
2841 (void)PerlProc_pclose(PL_rsfp);
2843 Perl_croak(aTHX_ "Permission denied\n");
2847 setreuid(PL_uid,PL_euid) < 0
2849 # if defined(HAS_SETRESUID)
2850 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2853 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2854 Perl_croak(aTHX_ "Can't reswap uid and euid");
2855 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2856 Perl_croak(aTHX_ "Permission denied\n");
2858 #endif /* HAS_SETREUID */
2859 #endif /* IAMSUID */
2861 if (!S_ISREG(PL_statbuf.st_mode))
2862 Perl_croak(aTHX_ "Permission denied");
2863 if (PL_statbuf.st_mode & S_IWOTH)
2864 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2865 PL_doswitches = FALSE; /* -s is insecure in suid */
2866 CopLINE_inc(PL_curcop);
2867 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2868 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2869 Perl_croak(aTHX_ "No #! line");
2870 s = SvPV(PL_linestr,n_a)+2;
2872 while (!isSPACE(*s)) s++;
2873 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2874 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2875 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2876 Perl_croak(aTHX_ "Not a perl script");
2877 while (*s == ' ' || *s == '\t') s++;
2879 * #! arg must be what we saw above. They can invoke it by
2880 * mentioning suidperl explicitly, but they may not add any strange
2881 * arguments beyond what #! says if they do invoke suidperl that way.
2883 len = strlen(validarg);
2884 if (strEQ(validarg," PHOOEY ") ||
2885 strnNE(s,validarg,len) || !isSPACE(s[len]))
2886 Perl_croak(aTHX_ "Args must match #! line");
2889 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2890 PL_euid == PL_statbuf.st_uid)
2892 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2893 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2894 #endif /* IAMSUID */
2896 if (PL_euid) { /* oops, we're not the setuid root perl */
2897 (void)PerlIO_close(PL_rsfp);
2900 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2901 (int)PERL_REVISION, (int)PERL_VERSION,
2902 (int)PERL_SUBVERSION), PL_origargv);
2904 Perl_croak(aTHX_ "Can't do setuid\n");
2907 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2909 (void)setegid(PL_statbuf.st_gid);
2912 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2914 #ifdef HAS_SETRESGID
2915 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2917 PerlProc_setgid(PL_statbuf.st_gid);
2921 if (PerlProc_getegid() != PL_statbuf.st_gid)
2922 Perl_croak(aTHX_ "Can't do setegid!\n");
2924 if (PL_statbuf.st_mode & S_ISUID) {
2925 if (PL_statbuf.st_uid != PL_euid)
2927 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2930 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2932 #ifdef HAS_SETRESUID
2933 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2935 PerlProc_setuid(PL_statbuf.st_uid);
2939 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2940 Perl_croak(aTHX_ "Can't do seteuid!\n");
2942 else if (PL_uid) { /* oops, mustn't run as root */
2944 (void)seteuid((Uid_t)PL_uid);
2947 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2949 #ifdef HAS_SETRESUID
2950 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2952 PerlProc_setuid((Uid_t)PL_uid);
2956 if (PerlProc_geteuid() != PL_uid)
2957 Perl_croak(aTHX_ "Can't do seteuid!\n");
2960 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2961 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
2964 else if (PL_preprocess)
2965 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
2966 else if (fdscript >= 0)
2967 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
2969 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
2971 /* We absolutely must clear out any saved ids here, so we */
2972 /* exec the real perl, substituting fd script for scriptname. */
2973 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2974 PerlIO_rewind(PL_rsfp);
2975 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2976 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2977 if (!PL_origargv[which])
2978 Perl_croak(aTHX_ "Permission denied");
2979 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
2980 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
2981 #if defined(HAS_FCNTL) && defined(F_SETFD)
2982 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
2984 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
2985 (int)PERL_REVISION, (int)PERL_VERSION,
2986 (int)PERL_SUBVERSION), PL_origargv);/* try again */
2987 Perl_croak(aTHX_ "Can't do setuid\n");
2988 #endif /* IAMSUID */
2990 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
2991 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
2993 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
2994 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
2996 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
2999 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3000 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3001 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3002 /* not set-id, must be wrapped */
3008 S_find_beginning(pTHX)
3010 register char *s, *s2;
3012 /* skip forward in input to the real script? */
3015 #ifdef MACOS_TRADITIONAL
3016 /* Since the Mac OS does not honor !# arguments for us, we do it ourselves */
3018 while (PL_doextract || gMacPerl_AlwaysExtract) {
3019 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3020 if (!gMacPerl_AlwaysExtract)
3021 Perl_croak(aTHX_ "No Perl script found in input\n");
3023 if (PL_doextract) /* require explicit override ? */
3024 if (!OverrideExtract(PL_origfilename))
3025 Perl_croak(aTHX_ "User aborted script\n");
3027 PL_doextract = FALSE;
3029 /* Pater peccavi, file does not have #! */
3030 PerlIO_rewind(PL_rsfp);
3035 while (PL_doextract) {
3036 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3037 Perl_croak(aTHX_ "No Perl script found in input\n");
3039 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3040 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3041 PL_doextract = FALSE;
3042 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3044 while (*s == ' ' || *s == '\t') s++;
3046 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3047 if (strnEQ(s2-4,"perl",4))
3049 while ((s = moreswitches(s)))
3060 PL_uid = PerlProc_getuid();
3061 PL_euid = PerlProc_geteuid();
3062 PL_gid = PerlProc_getgid();
3063 PL_egid = PerlProc_getegid();
3065 PL_uid |= PL_gid << 16;
3066 PL_euid |= PL_egid << 16;
3068 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3072 S_forbid_setid(pTHX_ char *s)
3074 if (PL_euid != PL_uid)
3075 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3076 if (PL_egid != PL_gid)
3077 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3081 Perl_init_debugger(pTHX)
3084 HV *ostash = PL_curstash;
3086 PL_curstash = PL_debstash;
3087 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3088 AvREAL_off(PL_dbargs);
3089 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3090 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3091 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3092 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3093 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3094 sv_setiv(PL_DBsingle, 0);
3095 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3096 sv_setiv(PL_DBtrace, 0);
3097 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3098 sv_setiv(PL_DBsignal, 0);
3099 PL_curstash = ostash;
3102 #ifndef STRESS_REALLOC
3103 #define REASONABLE(size) (size)
3105 #define REASONABLE(size) (1) /* unreasonable */
3109 Perl_init_stacks(pTHX)
3111 /* start with 128-item stack and 8K cxstack */
3112 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3113 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3114 PL_curstackinfo->si_type = PERLSI_MAIN;
3115 PL_curstack = PL_curstackinfo->si_stack;
3116 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3118 PL_stack_base = AvARRAY(PL_curstack);
3119 PL_stack_sp = PL_stack_base;
3120 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3122 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3125 PL_tmps_max = REASONABLE(128);
3127 New(54,PL_markstack,REASONABLE(32),I32);
3128 PL_markstack_ptr = PL_markstack;
3129 PL_markstack_max = PL_markstack + REASONABLE(32);
3133 New(54,PL_scopestack,REASONABLE(32),I32);
3134 PL_scopestack_ix = 0;
3135 PL_scopestack_max = REASONABLE(32);
3137 New(54,PL_savestack,REASONABLE(128),ANY);
3138 PL_savestack_ix = 0;
3139 PL_savestack_max = REASONABLE(128);
3141 New(54,PL_retstack,REASONABLE(16),OP*);
3143 PL_retstack_max = REASONABLE(16);
3152 while (PL_curstackinfo->si_next)
3153 PL_curstackinfo = PL_curstackinfo->si_next;
3154 while (PL_curstackinfo) {
3155 PERL_SI *p = PL_curstackinfo->si_prev;
3156 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3157 Safefree(PL_curstackinfo->si_cxstack);
3158 Safefree(PL_curstackinfo);
3159 PL_curstackinfo = p;
3161 Safefree(PL_tmps_stack);
3162 Safefree(PL_markstack);
3163 Safefree(PL_scopestack);
3164 Safefree(PL_savestack);
3165 Safefree(PL_retstack);
3169 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3180 lex_start(PL_linestr);
3182 PL_subname = newSVpvn("main",4);
3186 S_init_predump_symbols(pTHX)
3192 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3193 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3194 GvMULTI_on(PL_stdingv);
3195 io = GvIOp(PL_stdingv);
3196 IoIFP(io) = PerlIO_stdin();
3197 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3199 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3201 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3204 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3206 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3208 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3210 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3211 GvMULTI_on(PL_stderrgv);
3212 io = GvIOp(PL_stderrgv);
3213 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3214 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3216 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3218 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3221 Safefree(PL_osname);
3222 PL_osname = savepv(OSNAME);
3226 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3233 argc--,argv++; /* skip name of script */
3234 if (PL_doswitches) {
3235 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3238 if (argv[0][1] == '-' && !argv[0][2]) {
3242 if ((s = strchr(argv[0], '='))) {
3244 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3247 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3250 PL_toptarget = NEWSV(0,0);
3251 sv_upgrade(PL_toptarget, SVt_PVFM);
3252 sv_setpvn(PL_toptarget, "", 0);
3253 PL_bodytarget = NEWSV(0,0);
3254 sv_upgrade(PL_bodytarget, SVt_PVFM);
3255 sv_setpvn(PL_bodytarget, "", 0);
3256 PL_formtarget = PL_bodytarget;
3259 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3260 #ifdef MACOS_TRADITIONAL
3261 /* $0 is not majick on a Mac */
3262 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3264 sv_setpv(GvSV(tmpgv),PL_origfilename);
3265 magicname("0", "0", 1);
3268 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3270 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3272 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3274 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3275 GvMULTI_on(PL_argvgv);
3276 (void)gv_AVadd(PL_argvgv);
3277 av_clear(GvAVn(PL_argvgv));
3278 for (; argc > 0; argc--,argv++) {
3279 SV *sv = newSVpv(argv[0],0);
3280 av_push(GvAVn(PL_argvgv),sv);
3281 if (PL_widesyscalls)
3282 (void)sv_utf8_decode(sv);
3285 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3287 GvMULTI_on(PL_envgv);
3288 hv = GvHVn(PL_envgv);
3289 hv_magic(hv, PL_envgv, 'E');
3290 #if !defined( VMS) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) /* VMS doesn't have environ array */
3291 /* Note that if the supplied env parameter is actually a copy
3292 of the global environ then it may now point to free'd memory
3293 if the environment has been modified since. To avoid this
3294 problem we treat env==NULL as meaning 'use the default'
3299 environ[0] = Nullch;
3300 for (; *env; env++) {
3301 if (!(s = strchr(*env,'=')))
3307 sv = newSVpv(s--,0);
3308 (void)hv_store(hv, *env, s - *env, sv, 0);
3310 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3311 /* Sins of the RTL. See note in my_setenv(). */
3312 (void)PerlEnv_putenv(savepv(*env));
3316 #ifdef DYNAMIC_ENV_FETCH
3317 HvNAME(hv) = savepv(ENV_HV_NAME);
3321 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3322 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3326 S_init_perllib(pTHX)
3331 s = PerlEnv_getenv("PERL5LIB");
3333 incpush(s, TRUE, TRUE);
3335 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3337 /* Treat PERL5?LIB as a possible search list logical name -- the
3338 * "natural" VMS idiom for a Unix path string. We allow each
3339 * element to be a set of |-separated directories for compatibility.
3343 if (my_trnlnm("PERL5LIB",buf,0))
3344 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3346 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3350 /* Use the ~-expanded versions of APPLLIB (undocumented),
3351 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3354 incpush(APPLLIB_EXP, TRUE, TRUE);
3358 incpush(ARCHLIB_EXP, FALSE, FALSE);
3360 #ifdef MACOS_TRADITIONAL
3362 struct stat tmpstatbuf;
3363 SV * privdir = NEWSV(55, 0);
3364 char * macperl = PerlEnv_getenv("MACPERL");
3369 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3370 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3371 incpush(SvPVX(privdir), TRUE, FALSE);
3372 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3373 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3374 incpush(SvPVX(privdir), TRUE, FALSE);
3376 SvREFCNT_dec(privdir);
3379 incpush(":", FALSE, FALSE);
3382 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3385 incpush(PRIVLIB_EXP, TRUE, FALSE);
3387 incpush(PRIVLIB_EXP, FALSE, FALSE);
3391 /* sitearch is always relative to sitelib on Windows for
3392 * DLL-based path intuition to work correctly */
3393 # if !defined(WIN32)
3394 incpush(SITEARCH_EXP, FALSE, FALSE);
3400 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3402 incpush(SITELIB_EXP, FALSE, FALSE);
3406 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3407 incpush(SITELIB_STEM, FALSE, TRUE);
3410 #ifdef PERL_VENDORARCH_EXP
3411 /* vendorarch is always relative to vendorlib on Windows for
3412 * DLL-based path intuition to work correctly */
3413 # if !defined(WIN32)
3414 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3418 #ifdef PERL_VENDORLIB_EXP
3420 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3422 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3426 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3427 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3430 #ifdef PERL_OTHERLIBDIRS
3431 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3435 incpush(".", FALSE, FALSE);
3436 #endif /* MACOS_TRADITIONAL */
3440 # define PERLLIB_SEP ';'
3443 # define PERLLIB_SEP '|'
3445 # if defined(MACOS_TRADITIONAL)
3446 # define PERLLIB_SEP ','
3448 # define PERLLIB_SEP ':'
3452 #ifndef PERLLIB_MANGLE
3453 # define PERLLIB_MANGLE(s,n) (s)
3457 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3459 SV *subdir = Nullsv;
3464 if (addsubdirs || addoldvers) {
3465 subdir = sv_newmortal();
3468 /* Break at all separators */
3470 SV *libdir = NEWSV(55,0);
3473 /* skip any consecutive separators */
3474 while ( *p == PERLLIB_SEP ) {
3475 /* Uncomment the next line for PATH semantics */
3476 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3480 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3481 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3486 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3487 p = Nullch; /* break out */
3489 #ifdef MACOS_TRADITIONAL
3490 if (!strchr(SvPVX(libdir), ':'))
3491 sv_insert(libdir, 0, 0, ":", 1);
3492 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3493 sv_catpv(libdir, ":");
3497 * BEFORE pushing libdir onto @INC we may first push version- and
3498 * archname-specific sub-directories.
3500 if (addsubdirs || addoldvers) {
3501 #ifdef PERL_INC_VERSION_LIST
3502 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3503 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3504 const char **incver;
3506 struct stat tmpstatbuf;
3511 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3513 while (unix[len-1] == '/') len--; /* Cosmetic */
3514 sv_usepvn(libdir,unix,len);
3517 PerlIO_printf(Perl_error_log,
3518 "Failed to unixify @INC element \"%s\"\n",
3522 #ifdef MACOS_TRADITIONAL
3523 #define PERL_AV_SUFFIX_FMT ""
3524 #define PERL_ARCH_FMT ":%s"
3526 #define PERL_AV_SUFFIX_FMT "/"
3527 #define PERL_ARCH_FMT "/%s"
3529 /* .../version/archname if -d .../version/archname */
3530 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT PERL_ARCH_FMT,
3532 (int)PERL_REVISION, (int)PERL_VERSION,
3533 (int)PERL_SUBVERSION, ARCHNAME);
3534 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3535 S_ISDIR(tmpstatbuf.st_mode))
3536 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3538 /* .../version if -d .../version */
3539 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT, libdir,
3540 (int)PERL_REVISION, (int)PERL_VERSION,
3541 (int)PERL_SUBVERSION);
3542 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3543 S_ISDIR(tmpstatbuf.st_mode))
3544 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3546 /* .../archname if -d .../archname */
3547 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3548 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3549 S_ISDIR(tmpstatbuf.st_mode))
3550 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3553 #ifdef PERL_INC_VERSION_LIST
3555 for (incver = incverlist; *incver; incver++) {
3556 /* .../xxx if -d .../xxx */
3557 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3558 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3559 S_ISDIR(tmpstatbuf.st_mode))
3560 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3566 /* finally push this lib directory on the end of @INC */
3567 av_push(GvAVn(PL_incgv), libdir);
3572 STATIC struct perl_thread *
3573 S_init_main_thread(pTHX)
3575 #if !defined(PERL_IMPLICIT_CONTEXT)
3576 struct perl_thread *thr;
3580 Newz(53, thr, 1, struct perl_thread);
3581 PL_curcop = &PL_compiling;
3582 thr->interp = PERL_GET_INTERP;
3583 thr->cvcache = newHV();
3584 thr->threadsv = newAV();
3585 /* thr->threadsvp is set when find_threadsv is called */
3586 thr->specific = newAV();
3587 thr->flags = THRf_R_JOINABLE;
3588 MUTEX_INIT(&thr->mutex);
3589 /* Handcraft thrsv similarly to mess_sv */
3590 New(53, PL_thrsv, 1, SV);
3591 Newz(53, xpv, 1, XPV);
3592 SvFLAGS(PL_thrsv) = SVt_PV;
3593 SvANY(PL_thrsv) = (void*)xpv;
3594 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3595 SvPVX(PL_thrsv) = (char*)thr;
3596 SvCUR_set(PL_thrsv, sizeof(thr));
3597 SvLEN_set(PL_thrsv, sizeof(thr));
3598 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3599 thr->oursv = PL_thrsv;
3600 PL_chopset = " \n-";
3603 MUTEX_LOCK(&PL_threads_mutex);
3608 MUTEX_UNLOCK(&PL_threads_mutex);
3610 #ifdef HAVE_THREAD_INTERN
3611 Perl_init_thread_intern(thr);
3614 #ifdef SET_THREAD_SELF
3615 SET_THREAD_SELF(thr);
3617 thr->self = pthread_self();
3618 #endif /* SET_THREAD_SELF */
3622 * These must come after the SET_THR because sv_setpvn does
3623 * SvTAINT and the taint fields require dTHR.
3625 PL_toptarget = NEWSV(0,0);
3626 sv_upgrade(PL_toptarget, SVt_PVFM);
3627 sv_setpvn(PL_toptarget, "", 0);
3628 PL_bodytarget = NEWSV(0,0);
3629 sv_upgrade(PL_bodytarget, SVt_PVFM);
3630 sv_setpvn(PL_bodytarget, "", 0);
3631 PL_formtarget = PL_bodytarget;
3632 thr->errsv = newSVpvn("", 0);
3633 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3636 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3637 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3638 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3639 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3640 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3642 PL_reginterp_cnt = 0;
3646 #endif /* USE_THREADS */
3649 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3653 line_t oldline = CopLINE(PL_curcop);
3659 while (AvFILL(paramList) >= 0) {
3660 cv = (CV*)av_shift(paramList);
3662 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3663 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3669 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3673 (void)SvPV(atsv, len);
3676 PL_curcop = &PL_compiling;
3677 CopLINE_set(PL_curcop, oldline);
3678 if (paramList == PL_beginav)
3679 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3681 Perl_sv_catpvf(aTHX_ atsv,
3682 "%s failed--call queue aborted",
3683 paramList == PL_checkav ? "CHECK"
3684 : paramList == PL_initav ? "INIT"
3686 while (PL_scopestack_ix > oldscope)
3689 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3696 /* my_exit() was called */
3697 while (PL_scopestack_ix > oldscope)
3700 PL_curstash = PL_defstash;
3701 PL_curcop = &PL_compiling;
3702 CopLINE_set(PL_curcop, oldline);
3704 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3705 if (paramList == PL_beginav)
3706 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3708 Perl_croak(aTHX_ "%s failed--call queue aborted",
3709 paramList == PL_checkav ? "CHECK"
3710 : paramList == PL_initav ? "INIT"
3717 PL_curcop = &PL_compiling;
3718 CopLINE_set(PL_curcop, oldline);
3721 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3729 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3731 S_vcall_list_body(pTHX_ va_list args)
3733 CV *cv = va_arg(args, CV*);
3734 return call_list_body(cv);
3739 S_call_list_body(pTHX_ CV *cv)
3741 PUSHMARK(PL_stack_sp);
3742 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3747 Perl_my_exit(pTHX_ U32 status)
3751 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3752 thr, (unsigned long) status));
3761 STATUS_NATIVE_SET(status);
3768 Perl_my_failure_exit(pTHX)
3771 if (vaxc$errno & 1) {
3772 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3773 STATUS_NATIVE_SET(44);
3776 if (!vaxc$errno && errno) /* unlikely */
3777 STATUS_NATIVE_SET(44);
3779 STATUS_NATIVE_SET(vaxc$errno);
3784 STATUS_POSIX_SET(errno);
3786 exitstatus = STATUS_POSIX >> 8;
3787 if (exitstatus & 255)
3788 STATUS_POSIX_SET(exitstatus);
3790 STATUS_POSIX_SET(255);
3797 S_my_exit_jump(pTHX)
3800 register PERL_CONTEXT *cx;
3805 SvREFCNT_dec(PL_e_script);
3806 PL_e_script = Nullsv;
3809 POPSTACK_TO(PL_mainstack);
3810 if (cxstack_ix >= 0) {
3813 POPBLOCK(cx,PL_curpm);
3825 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3828 p = SvPVX(PL_e_script);
3829 nl = strchr(p, '\n');
3830 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3832 filter_del(read_e_script);
3835 sv_catpvn(buf_sv, p, nl-p);
3836 sv_chop(PL_e_script, nl);