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);
1183 #if defined(SIGCHLD) || defined(SIGCLD)
1186 # define SIGCHLD SIGCLD
1188 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1189 if (sigstate == SIG_IGN) {
1190 if (ckWARN(WARN_SIGNAL))
1191 Perl_warner(aTHX_ WARN_SIGNAL,
1192 "Can't ignore signal CHLD, forcing to default");
1193 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1198 #ifdef MACOS_TRADITIONAL
1199 if (PL_doextract || gMacPerl_AlwaysExtract) {
1204 if (cddir && PerlDir_chdir(cddir) < 0)
1205 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1209 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1210 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1211 CvUNIQUE_on(PL_compcv);
1213 PL_comppad = newAV();
1214 av_push(PL_comppad, Nullsv);
1215 PL_curpad = AvARRAY(PL_comppad);
1216 PL_comppad_name = newAV();
1217 PL_comppad_name_fill = 0;
1218 PL_min_intro_pending = 0;
1221 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1222 PL_curpad[0] = (SV*)newAV();
1223 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1224 CvOWNER(PL_compcv) = 0;
1225 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1226 MUTEX_INIT(CvMUTEXP(PL_compcv));
1227 #endif /* USE_THREADS */
1229 comppadlist = newAV();
1230 AvREAL_off(comppadlist);
1231 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1232 av_store(comppadlist, 1, (SV*)PL_comppad);
1233 CvPADLIST(PL_compcv) = comppadlist;
1235 boot_core_UNIVERSAL();
1237 boot_core_xsutils();
1241 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1242 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__)
1250 init_predump_symbols();
1251 /* init_postdump_symbols not currently designed to be called */
1252 /* more than once (ENV isn't cleared first, for example) */
1253 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1255 init_postdump_symbols(argc,argv,env);
1259 /* now parse the script */
1261 SETERRNO(0,SS$_NORMAL);
1263 #ifdef MACOS_TRADITIONAL
1264 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1266 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1268 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1269 MacPerl_MPWFileName(PL_origfilename));
1273 if (yyparse() || PL_error_count) {
1275 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1277 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1282 CopLINE_set(PL_curcop, 0);
1283 PL_curstash = PL_defstash;
1284 PL_preprocess = FALSE;
1286 SvREFCNT_dec(PL_e_script);
1287 PL_e_script = Nullsv;
1290 /* now that script is parsed, we can modify record separator */
1291 SvREFCNT_dec(PL_rs);
1292 PL_rs = SvREFCNT_inc(PL_nrs);
1293 sv_setsv(get_sv("/", TRUE), PL_rs);
1298 SAVECOPFILE(PL_curcop);
1299 SAVECOPLINE(PL_curcop);
1300 gv_check(PL_defstash);
1307 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1308 dump_mstats("after compilation:");
1317 =for apidoc perl_run
1319 Tells a Perl interpreter to run. See L<perlembed>.
1335 oldscope = PL_scopestack_ix;
1337 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1339 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1345 cxstack_ix = -1; /* start context stack again */
1347 case 0: /* normal completion */
1348 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1353 case 2: /* my_exit() */
1354 while (PL_scopestack_ix > oldscope)
1357 PL_curstash = PL_defstash;
1358 if (PL_endav && !PL_minus_c)
1359 call_list(oldscope, PL_endav);
1361 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1362 dump_mstats("after execution: ");
1364 ret = STATUS_NATIVE_EXPORT;
1368 POPSTACK_TO(PL_mainstack);
1371 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1381 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1383 S_vrun_body(pTHX_ va_list args)
1385 I32 oldscope = va_arg(args, I32);
1387 return run_body(oldscope);
1393 S_run_body(pTHX_ I32 oldscope)
1397 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1398 PL_sawampersand ? "Enabling" : "Omitting"));
1400 if (!PL_restartop) {
1401 DEBUG_x(dump_all());
1402 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1403 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1407 #ifdef MACOS_TRADITIONAL
1408 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1410 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1414 if (PERLDB_SINGLE && PL_DBsingle)
1415 sv_setiv(PL_DBsingle, 1);
1417 call_list(oldscope, PL_initav);
1423 PL_op = PL_restartop;
1427 else if (PL_main_start) {
1428 CvDEPTH(PL_main_cv) = 1;
1429 PL_op = PL_main_start;
1439 =for apidoc p||get_sv
1441 Returns the SV of the specified Perl scalar. If C<create> is set and the
1442 Perl variable does not exist then it will be created. If C<create> is not
1443 set and the variable does not exist then NULL is returned.
1449 Perl_get_sv(pTHX_ const char *name, I32 create)
1453 if (name[1] == '\0' && !isALPHA(name[0])) {
1454 PADOFFSET tmp = find_threadsv(name);
1455 if (tmp != NOT_IN_PAD) {
1457 return THREADSV(tmp);
1460 #endif /* USE_THREADS */
1461 gv = gv_fetchpv(name, create, SVt_PV);
1468 =for apidoc p||get_av
1470 Returns the AV of the specified Perl array. If C<create> is set and the
1471 Perl variable does not exist then it will be created. If C<create> is not
1472 set and the variable does not exist then NULL is returned.
1478 Perl_get_av(pTHX_ const char *name, I32 create)
1480 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1489 =for apidoc p||get_hv
1491 Returns the HV of the specified Perl hash. If C<create> is set and the
1492 Perl variable does not exist then it will be created. If C<create> is not
1493 set and the variable does not exist then NULL is returned.
1499 Perl_get_hv(pTHX_ const char *name, I32 create)
1501 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1510 =for apidoc p||get_cv
1512 Returns the CV of the specified Perl subroutine. If C<create> is set and
1513 the Perl subroutine does not exist then it will be declared (which has the
1514 same effect as saying C<sub name;>). If C<create> is not set and the
1515 subroutine does not exist then NULL is returned.
1521 Perl_get_cv(pTHX_ const char *name, I32 create)
1523 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1524 /* XXX unsafe for threads if eval_owner isn't held */
1525 /* XXX this is probably not what they think they're getting.
1526 * It has the same effect as "sub name;", i.e. just a forward
1528 if (create && !GvCVu(gv))
1529 return newSUB(start_subparse(FALSE, 0),
1530 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1538 /* Be sure to refetch the stack pointer after calling these routines. */
1541 =for apidoc p||call_argv
1543 Performs a callback to the specified Perl sub. See L<perlcall>.
1549 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1551 /* See G_* flags in cop.h */
1552 /* null terminated arg list */
1559 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1564 return call_pv(sub_name, flags);
1568 =for apidoc p||call_pv
1570 Performs a callback to the specified Perl sub. See L<perlcall>.
1576 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1577 /* name of the subroutine */
1578 /* See G_* flags in cop.h */
1580 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1584 =for apidoc p||call_method
1586 Performs a callback to the specified Perl method. The blessed object must
1587 be on the stack. See L<perlcall>.
1593 Perl_call_method(pTHX_ const char *methname, I32 flags)
1594 /* name of the subroutine */
1595 /* See G_* flags in cop.h */
1597 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1600 /* May be called with any of a CV, a GV, or an SV containing the name. */
1602 =for apidoc p||call_sv
1604 Performs a callback to the Perl sub whose name is in the SV. See
1611 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1612 /* See G_* flags in cop.h */
1615 LOGOP myop; /* fake syntax tree node */
1620 bool oldcatch = CATCH_GET;
1625 if (flags & G_DISCARD) {
1630 Zero(&myop, 1, LOGOP);
1631 myop.op_next = Nullop;
1632 if (!(flags & G_NOARGS))
1633 myop.op_flags |= OPf_STACKED;
1634 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1635 (flags & G_ARRAY) ? OPf_WANT_LIST :
1640 EXTEND(PL_stack_sp, 1);
1641 *++PL_stack_sp = sv;
1643 oldscope = PL_scopestack_ix;
1645 if (PERLDB_SUB && PL_curstash != PL_debstash
1646 /* Handle first BEGIN of -d. */
1647 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1648 /* Try harder, since this may have been a sighandler, thus
1649 * curstash may be meaningless. */
1650 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1651 && !(flags & G_NODEBUG))
1652 PL_op->op_private |= OPpENTERSUB_DB;
1654 if (flags & G_METHOD) {
1655 Zero(&method_op, 1, UNOP);
1656 method_op.op_next = PL_op;
1657 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1658 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1659 PL_op = (OP*)&method_op;
1662 if (!(flags & G_EVAL)) {
1664 call_body((OP*)&myop, FALSE);
1665 retval = PL_stack_sp - (PL_stack_base + oldmark);
1666 CATCH_SET(oldcatch);
1669 myop.op_other = (OP*)&myop;
1671 /* we're trying to emulate pp_entertry() here */
1673 register PERL_CONTEXT *cx;
1674 I32 gimme = GIMME_V;
1679 push_return(Nullop);
1680 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1682 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1684 PL_in_eval = EVAL_INEVAL;
1685 if (flags & G_KEEPERR)
1686 PL_in_eval |= EVAL_KEEPERR;
1692 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1694 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1701 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1703 call_body((OP*)&myop, FALSE);
1705 retval = PL_stack_sp - (PL_stack_base + oldmark);
1706 if (!(flags & G_KEEPERR))
1713 /* my_exit() was called */
1714 PL_curstash = PL_defstash;
1717 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1718 Perl_croak(aTHX_ "Callback called exit");
1723 PL_op = PL_restartop;
1727 PL_stack_sp = PL_stack_base + oldmark;
1728 if (flags & G_ARRAY)
1732 *++PL_stack_sp = &PL_sv_undef;
1737 if (PL_scopestack_ix > oldscope) {
1741 register PERL_CONTEXT *cx;
1753 if (flags & G_DISCARD) {
1754 PL_stack_sp = PL_stack_base + oldmark;
1763 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1765 S_vcall_body(pTHX_ va_list args)
1767 OP *myop = va_arg(args, OP*);
1768 int is_eval = va_arg(args, int);
1770 call_body(myop, is_eval);
1776 S_call_body(pTHX_ OP *myop, int is_eval)
1780 if (PL_op == myop) {
1782 PL_op = Perl_pp_entereval(aTHX);
1784 PL_op = Perl_pp_entersub(aTHX);
1790 /* Eval a string. The G_EVAL flag is always assumed. */
1793 =for apidoc p||eval_sv
1795 Tells Perl to C<eval> the string in the SV.
1801 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1803 /* See G_* flags in cop.h */
1806 UNOP myop; /* fake syntax tree node */
1807 I32 oldmark = SP - PL_stack_base;
1814 if (flags & G_DISCARD) {
1821 Zero(PL_op, 1, UNOP);
1822 EXTEND(PL_stack_sp, 1);
1823 *++PL_stack_sp = sv;
1824 oldscope = PL_scopestack_ix;
1826 if (!(flags & G_NOARGS))
1827 myop.op_flags = OPf_STACKED;
1828 myop.op_next = Nullop;
1829 myop.op_type = OP_ENTEREVAL;
1830 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1831 (flags & G_ARRAY) ? OPf_WANT_LIST :
1833 if (flags & G_KEEPERR)
1834 myop.op_flags |= OPf_SPECIAL;
1836 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1838 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1845 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1847 call_body((OP*)&myop,TRUE);
1849 retval = PL_stack_sp - (PL_stack_base + oldmark);
1850 if (!(flags & G_KEEPERR))
1857 /* my_exit() was called */
1858 PL_curstash = PL_defstash;
1861 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1862 Perl_croak(aTHX_ "Callback called exit");
1867 PL_op = PL_restartop;
1871 PL_stack_sp = PL_stack_base + oldmark;
1872 if (flags & G_ARRAY)
1876 *++PL_stack_sp = &PL_sv_undef;
1882 if (flags & G_DISCARD) {
1883 PL_stack_sp = PL_stack_base + oldmark;
1893 =for apidoc p||eval_pv
1895 Tells Perl to C<eval> the given string and return an SV* result.
1901 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1904 SV* sv = newSVpv(p, 0);
1907 eval_sv(sv, G_SCALAR);
1914 if (croak_on_error && SvTRUE(ERRSV)) {
1916 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1922 /* Require a module. */
1925 =for apidoc p||require_pv
1927 Tells Perl to C<require> a module.
1933 Perl_require_pv(pTHX_ const char *pv)
1937 PUSHSTACKi(PERLSI_REQUIRE);
1939 sv = sv_newmortal();
1940 sv_setpv(sv, "require '");
1943 eval_sv(sv, G_DISCARD);
1949 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
1953 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
1954 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1958 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
1960 /* This message really ought to be max 23 lines.
1961 * Removed -h because the user already knows that opton. Others? */
1963 static char *usage_msg[] = {
1964 "-0[octal] specify record separator (\\0, if no argument)",
1965 "-a autosplit mode with -n or -p (splits $_ into @F)",
1966 "-C enable native wide character system interfaces",
1967 "-c check syntax only (runs BEGIN and CHECK blocks)",
1968 "-d[:debugger] run program under debugger",
1969 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1970 "-e 'command' one line of program (several -e's allowed, omit programfile)",
1971 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
1972 "-i[extension] edit <> files in place (makes backup if extension supplied)",
1973 "-Idirectory specify @INC/#include directory (several -I's allowed)",
1974 "-l[octal] enable line ending processing, specifies line terminator",
1975 "-[mM][-]module execute `use/no module...' before executing program",
1976 "-n assume 'while (<>) { ... }' loop around program",
1977 "-p assume loop like -n but print line also, like sed",
1978 "-P run program through C preprocessor before compilation",
1979 "-s enable rudimentary parsing for switches after programfile",
1980 "-S look for programfile using PATH environment variable",
1981 "-T enable tainting checks",
1982 "-u dump core after parsing program",
1983 "-U allow unsafe operations",
1984 "-v print version, subversion (includes VERY IMPORTANT perl info)",
1985 "-V[:variable] print configuration summary (or a single Config.pm variable)",
1986 "-w enable many useful warnings (RECOMMENDED)",
1987 "-W enable all warnings",
1988 "-X disable all warnings",
1989 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
1993 char **p = usage_msg;
1995 PerlIO_printf(PerlIO_stdout(),
1996 "\nUsage: %s [switches] [--] [programfile] [arguments]",
1999 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2002 /* This routine handles any switches that can be given during run */
2005 Perl_moreswitches(pTHX_ char *s)
2014 numlen = 0; /* disallow underscores */
2015 rschar = (U32)scan_oct(s, 4, &numlen);
2016 SvREFCNT_dec(PL_nrs);
2017 if (rschar & ~((U8)~0))
2018 PL_nrs = &PL_sv_undef;
2019 else if (!rschar && numlen >= 2)
2020 PL_nrs = newSVpvn("", 0);
2023 PL_nrs = newSVpvn(&ch, 1);
2028 PL_widesyscalls = TRUE;
2033 PL_splitstr = savepv(s + 1);
2047 if (*s == ':' || *s == '=') {
2048 my_setenv("PERL5DB", Perl_form(aTHX_ "use Devel::%s;", ++s));
2052 PL_perldb = PERLDB_ALL;
2060 if (isALPHA(s[1])) {
2061 static char debopts[] = "psltocPmfrxuLHXDS";
2064 for (s++; *s && (d = strchr(debopts,*s)); s++)
2065 PL_debug |= 1 << (d - debopts);
2068 PL_debug = atoi(s+1);
2069 for (s++; isDIGIT(*s); s++) ;
2071 PL_debug |= 0x80000000;
2074 if (ckWARN_d(WARN_DEBUGGING))
2075 Perl_warner(aTHX_ WARN_DEBUGGING,
2076 "Recompile perl with -DDEBUGGING to use -D switch\n");
2077 for (s++; isALNUM(*s); s++) ;
2083 usage(PL_origargv[0]);
2087 Safefree(PL_inplace);
2088 PL_inplace = savepv(s+1);
2090 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2093 if (*s == '-') /* Additional switches on #! line. */
2097 case 'I': /* -I handled both here and in parse_perl() */
2100 while (*s && isSPACE(*s))
2105 /* ignore trailing spaces (possibly followed by other switches) */
2107 for (e = p; *e && !isSPACE(*e); e++) ;
2111 } while (*p && *p != '-');
2112 e = savepvn(s, e-s);
2113 incpush(e, TRUE, TRUE);
2120 Perl_croak(aTHX_ "No directory specified for -I");
2128 PL_ors = savepv("\n");
2130 numlen = 0; /* disallow underscores */
2131 *PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2136 if (RsPARA(PL_nrs)) {
2141 PL_ors = SvPV(PL_nrs, PL_orslen);
2142 PL_ors = savepvn(PL_ors, PL_orslen);
2146 forbid_setid("-M"); /* XXX ? */
2149 forbid_setid("-m"); /* XXX ? */
2154 /* -M-foo == 'no foo' */
2155 if (*s == '-') { use = "no "; ++s; }
2156 sv = newSVpv(use,0);
2158 /* We allow -M'Module qw(Foo Bar)' */
2159 while(isALNUM(*s) || *s==':') ++s;
2161 sv_catpv(sv, start);
2162 if (*(start-1) == 'm') {
2164 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2165 sv_catpv( sv, " ()");
2169 Perl_croak(aTHX_ "Module name required with -%c option",
2171 sv_catpvn(sv, start, s-start);
2172 sv_catpv(sv, " split(/,/,q{");
2178 PL_preambleav = newAV();
2179 av_push(PL_preambleav, sv);
2182 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2194 PL_doswitches = TRUE;
2199 Perl_croak(aTHX_ "Too late for \"-T\" option");
2203 #ifdef MACOS_TRADITIONAL
2204 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2206 PL_do_undump = TRUE;
2214 PerlIO_printf(PerlIO_stdout(),
2215 Perl_form(aTHX_ "\nThis is perl, v%vd built for %s",
2216 PL_patchlevel, ARCHNAME));
2217 #if defined(LOCAL_PATCH_COUNT)
2218 if (LOCAL_PATCH_COUNT > 0)
2219 PerlIO_printf(PerlIO_stdout(),
2220 "\n(with %d registered patch%s, "
2221 "see perl -V for more detail)",
2222 (int)LOCAL_PATCH_COUNT,
2223 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2226 PerlIO_printf(PerlIO_stdout(),
2227 "\n\nCopyright 1987-2000, Larry Wall\n");
2229 PerlIO_printf(PerlIO_stdout(),
2230 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2233 PerlIO_printf(PerlIO_stdout(),
2234 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2235 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2238 PerlIO_printf(PerlIO_stdout(),
2239 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2240 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2243 PerlIO_printf(PerlIO_stdout(),
2244 "atariST series port, ++jrb bammi@cadence.com\n");
2247 PerlIO_printf(PerlIO_stdout(),
2248 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2251 PerlIO_printf(PerlIO_stdout(),
2252 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
2255 PerlIO_printf(PerlIO_stdout(),
2256 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2259 PerlIO_printf(PerlIO_stdout(),
2260 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2263 PerlIO_printf(PerlIO_stdout(),
2264 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2267 PerlIO_printf(PerlIO_stdout(),
2268 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2271 PerlIO_printf(PerlIO_stdout(),
2272 "MiNT port by Guido Flohr, 1997-1999\n");
2275 PerlIO_printf(PerlIO_stdout(),
2276 "EPOC port by Olaf Flebbe, 1999-2000\n");
2278 #ifdef BINARY_BUILD_NOTICE
2279 BINARY_BUILD_NOTICE;
2281 PerlIO_printf(PerlIO_stdout(),
2283 Perl may be copied only under the terms of either the Artistic License or the\n\
2284 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
2285 Complete documentation for Perl, including FAQ lists, should be found on\n\
2286 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2287 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2290 if (! (PL_dowarn & G_WARN_ALL_MASK))
2291 PL_dowarn |= G_WARN_ON;
2295 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2296 PL_compiling.cop_warnings = pWARN_ALL ;
2300 PL_dowarn = G_WARN_ALL_OFF;
2301 PL_compiling.cop_warnings = pWARN_NONE ;
2306 if (s[1] == '-') /* Additional switches on #! line. */
2311 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2317 #ifdef ALTERNATE_SHEBANG
2318 case 'S': /* OS/2 needs -S on "extproc" line. */
2326 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2331 /* compliments of Tom Christiansen */
2333 /* unexec() can be found in the Gnu emacs distribution */
2334 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2337 Perl_my_unexec(pTHX)
2345 prog = newSVpv(BIN_EXP, 0);
2346 sv_catpv(prog, "/perl");
2347 file = newSVpv(PL_origfilename, 0);
2348 sv_catpv(file, ".perldump");
2350 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2351 /* unexec prints msg to stderr in case of failure */
2352 PerlProc_exit(status);
2355 # include <lib$routines.h>
2356 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2358 ABORT(); /* for use with undump */
2363 /* initialize curinterp */
2368 #ifdef PERL_OBJECT /* XXX kludge */
2371 PL_chopset = " \n-"; \
2372 PL_copline = NOLINE; \
2373 PL_curcop = &PL_compiling;\
2374 PL_curcopdb = NULL; \
2376 PL_dumpindent = 4; \
2377 PL_laststatval = -1; \
2378 PL_laststype = OP_STAT; \
2379 PL_maxscream = -1; \
2380 PL_maxsysfd = MAXSYSFD; \
2381 PL_statname = Nullsv; \
2382 PL_tmps_floor = -1; \
2384 PL_op_mask = NULL; \
2385 PL_laststatval = -1; \
2386 PL_laststype = OP_STAT; \
2387 PL_mess_sv = Nullsv; \
2388 PL_splitstr = " "; \
2389 PL_generation = 100; \
2390 PL_exitlist = NULL; \
2391 PL_exitlistlen = 0; \
2393 PL_in_clean_objs = FALSE; \
2394 PL_in_clean_all = FALSE; \
2395 PL_profiledata = NULL; \
2397 PL_rsfp_filters = Nullav; \
2402 # ifdef MULTIPLICITY
2403 # define PERLVAR(var,type)
2404 # define PERLVARA(var,n,type)
2405 # if defined(PERL_IMPLICIT_CONTEXT)
2406 # if defined(USE_THREADS)
2407 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2408 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2409 # else /* !USE_THREADS */
2410 # define PERLVARI(var,type,init) aTHX->var = init;
2411 # define PERLVARIC(var,type,init) aTHX->var = init;
2412 # endif /* USE_THREADS */
2414 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2415 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2417 # include "intrpvar.h"
2418 # ifndef USE_THREADS
2419 # include "thrdvar.h"
2426 # define PERLVAR(var,type)
2427 # define PERLVARA(var,n,type)
2428 # define PERLVARI(var,type,init) PL_##var = init;
2429 # define PERLVARIC(var,type,init) PL_##var = init;
2430 # include "intrpvar.h"
2431 # ifndef USE_THREADS
2432 # include "thrdvar.h"
2444 S_init_main_stash(pTHX)
2449 /* Note that strtab is a rather special HV. Assumptions are made
2450 about not iterating on it, and not adding tie magic to it.
2451 It is properly deallocated in perl_destruct() */
2452 PL_strtab = newHV();
2454 MUTEX_INIT(&PL_strtab_mutex);
2456 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2457 hv_ksplit(PL_strtab, 512);
2459 PL_curstash = PL_defstash = newHV();
2460 PL_curstname = newSVpvn("main",4);
2461 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2462 SvREFCNT_dec(GvHV(gv));
2463 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2465 HvNAME(PL_defstash) = savepv("main");
2466 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2467 GvMULTI_on(PL_incgv);
2468 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2469 GvMULTI_on(PL_hintgv);
2470 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2471 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2472 GvMULTI_on(PL_errgv);
2473 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2474 GvMULTI_on(PL_replgv);
2475 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2476 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2477 sv_setpvn(ERRSV, "", 0);
2478 PL_curstash = PL_defstash;
2479 CopSTASH_set(&PL_compiling, PL_defstash);
2480 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2481 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2482 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2483 /* We must init $/ before switches are processed. */
2484 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2488 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2495 PL_origfilename = savepv("-e");
2498 /* if find_script() returns, it returns a malloc()-ed value */
2499 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2501 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2502 char *s = scriptname + 8;
2503 *fdscript = atoi(s);
2507 scriptname = savepv(s + 1);
2508 Safefree(PL_origfilename);
2509 PL_origfilename = scriptname;
2514 CopFILE_set(PL_curcop, PL_origfilename);
2515 if (strEQ(PL_origfilename,"-"))
2517 if (*fdscript >= 0) {
2518 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2519 #if defined(HAS_FCNTL) && defined(F_SETFD)
2521 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2524 else if (PL_preprocess) {
2525 char *cpp_cfg = CPPSTDIN;
2526 SV *cpp = newSVpvn("",0);
2527 SV *cmd = NEWSV(0,0);
2529 if (strEQ(cpp_cfg, "cppstdin"))
2530 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2531 sv_catpv(cpp, cpp_cfg);
2533 sv_catpvn(sv, "-I", 2);
2534 sv_catpv(sv,PRIVLIB_EXP);
2536 #if defined(MSDOS) || defined(WIN32)
2537 Perl_sv_setpvf(aTHX_ cmd, "\
2538 sed %s -e \"/^[^#]/b\" \
2539 -e \"/^#[ ]*include[ ]/b\" \
2540 -e \"/^#[ ]*define[ ]/b\" \
2541 -e \"/^#[ ]*if[ ]/b\" \
2542 -e \"/^#[ ]*ifdef[ ]/b\" \
2543 -e \"/^#[ ]*ifndef[ ]/b\" \
2544 -e \"/^#[ ]*else/b\" \
2545 -e \"/^#[ ]*elif[ ]/b\" \
2546 -e \"/^#[ ]*undef[ ]/b\" \
2547 -e \"/^#[ ]*endif/b\" \
2549 %s | %"SVf" -C %"SVf" %s",
2550 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2553 Perl_sv_setpvf(aTHX_ cmd, "\
2554 %s %s -e '/^[^#]/b' \
2555 -e '/^#[ ]*include[ ]/b' \
2556 -e '/^#[ ]*define[ ]/b' \
2557 -e '/^#[ ]*if[ ]/b' \
2558 -e '/^#[ ]*ifdef[ ]/b' \
2559 -e '/^#[ ]*ifndef[ ]/b' \
2560 -e '/^#[ ]*else/b' \
2561 -e '/^#[ ]*elif[ ]/b' \
2562 -e '/^#[ ]*undef[ ]/b' \
2563 -e '/^#[ ]*endif/b' \
2565 %s | %"SVf" %"SVf" %s",
2567 Perl_sv_setpvf(aTHX_ cmd, "\
2568 %s %s -e '/^[^#]/b' \
2569 -e '/^#[ ]*include[ ]/b' \
2570 -e '/^#[ ]*define[ ]/b' \
2571 -e '/^#[ ]*if[ ]/b' \
2572 -e '/^#[ ]*ifdef[ ]/b' \
2573 -e '/^#[ ]*ifndef[ ]/b' \
2574 -e '/^#[ ]*else/b' \
2575 -e '/^#[ ]*elif[ ]/b' \
2576 -e '/^#[ ]*undef[ ]/b' \
2577 -e '/^#[ ]*endif/b' \
2579 %s | %"SVf" -C %"SVf" %s",
2586 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2588 scriptname, cpp, sv, CPPMINUS);
2589 PL_doextract = FALSE;
2590 #ifdef IAMSUID /* actually, this is caught earlier */
2591 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2593 (void)seteuid(PL_uid); /* musn't stay setuid root */
2596 (void)setreuid((Uid_t)-1, PL_uid);
2598 #ifdef HAS_SETRESUID
2599 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2601 PerlProc_setuid(PL_uid);
2605 if (PerlProc_geteuid() != PL_uid)
2606 Perl_croak(aTHX_ "Can't do seteuid!\n");
2608 #endif /* IAMSUID */
2609 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2613 else if (!*scriptname) {
2614 forbid_setid("program input from stdin");
2615 PL_rsfp = PerlIO_stdin();
2618 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2619 #if defined(HAS_FCNTL) && defined(F_SETFD)
2621 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2626 #ifndef IAMSUID /* in case script is not readable before setuid */
2628 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2629 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2632 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2633 (int)PERL_REVISION, (int)PERL_VERSION,
2634 (int)PERL_SUBVERSION), PL_origargv);
2635 Perl_croak(aTHX_ "Can't do setuid\n");
2639 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2640 CopFILE(PL_curcop), Strerror(errno));
2645 * I_SYSSTATVFS HAS_FSTATVFS
2647 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2648 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2649 * here so that metaconfig picks them up. */
2653 S_fd_on_nosuid_fs(pTHX_ int fd)
2655 int check_okay = 0; /* able to do all the required sys/libcalls */
2656 int on_nosuid = 0; /* the fd is on a nosuid fs */
2658 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2659 * fstatvfs() is UNIX98.
2660 * fstatfs() is 4.3 BSD.
2661 * ustat()+getmnt() is pre-4.3 BSD.
2662 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2663 * an irrelevant filesystem while trying to reach the right one.
2666 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2668 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2669 defined(HAS_FSTATVFS)
2670 # define FD_ON_NOSUID_CHECK_OKAY
2671 struct statvfs stfs;
2673 check_okay = fstatvfs(fd, &stfs) == 0;
2674 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2675 # endif /* fstatvfs */
2677 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2678 defined(PERL_MOUNT_NOSUID) && \
2679 defined(HAS_FSTATFS) && \
2680 defined(HAS_STRUCT_STATFS) && \
2681 defined(HAS_STRUCT_STATFS_F_FLAGS)
2682 # define FD_ON_NOSUID_CHECK_OKAY
2685 check_okay = fstatfs(fd, &stfs) == 0;
2686 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2687 # endif /* fstatfs */
2689 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2690 defined(PERL_MOUNT_NOSUID) && \
2691 defined(HAS_FSTAT) && \
2692 defined(HAS_USTAT) && \
2693 defined(HAS_GETMNT) && \
2694 defined(HAS_STRUCT_FS_DATA) && \
2696 # define FD_ON_NOSUID_CHECK_OKAY
2699 if (fstat(fd, &fdst) == 0) {
2701 if (ustat(fdst.st_dev, &us) == 0) {
2703 /* NOSTAT_ONE here because we're not examining fields which
2704 * vary between that case and STAT_ONE. */
2705 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2706 size_t cmplen = sizeof(us.f_fname);
2707 if (sizeof(fsd.fd_req.path) < cmplen)
2708 cmplen = sizeof(fsd.fd_req.path);
2709 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2710 fdst.st_dev == fsd.fd_req.dev) {
2712 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2718 # endif /* fstat+ustat+getmnt */
2720 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2721 defined(HAS_GETMNTENT) && \
2722 defined(HAS_HASMNTOPT) && \
2723 defined(MNTOPT_NOSUID)
2724 # define FD_ON_NOSUID_CHECK_OKAY
2725 FILE *mtab = fopen("/etc/mtab", "r");
2726 struct mntent *entry;
2727 struct stat stb, fsb;
2729 if (mtab && (fstat(fd, &stb) == 0)) {
2730 while (entry = getmntent(mtab)) {
2731 if (stat(entry->mnt_dir, &fsb) == 0
2732 && fsb.st_dev == stb.st_dev)
2734 /* found the filesystem */
2736 if (hasmntopt(entry, MNTOPT_NOSUID))
2739 } /* A single fs may well fail its stat(). */
2744 # endif /* getmntent+hasmntopt */
2747 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2750 #endif /* IAMSUID */
2753 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2759 /* do we need to emulate setuid on scripts? */
2761 /* This code is for those BSD systems that have setuid #! scripts disabled
2762 * in the kernel because of a security problem. Merely defining DOSUID
2763 * in perl will not fix that problem, but if you have disabled setuid
2764 * scripts in the kernel, this will attempt to emulate setuid and setgid
2765 * on scripts that have those now-otherwise-useless bits set. The setuid
2766 * root version must be called suidperl or sperlN.NNN. If regular perl
2767 * discovers that it has opened a setuid script, it calls suidperl with
2768 * the same argv that it had. If suidperl finds that the script it has
2769 * just opened is NOT setuid root, it sets the effective uid back to the
2770 * uid. We don't just make perl setuid root because that loses the
2771 * effective uid we had before invoking perl, if it was different from the
2774 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2775 * be defined in suidperl only. suidperl must be setuid root. The
2776 * Configure script will set this up for you if you want it.
2783 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2784 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2785 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2790 #ifndef HAS_SETREUID
2791 /* On this access check to make sure the directories are readable,
2792 * there is actually a small window that the user could use to make
2793 * filename point to an accessible directory. So there is a faint
2794 * chance that someone could execute a setuid script down in a
2795 * non-accessible directory. I don't know what to do about that.
2796 * But I don't think it's too important. The manual lies when
2797 * it says access() is useful in setuid programs.
2799 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2800 Perl_croak(aTHX_ "Permission denied");
2802 /* If we can swap euid and uid, then we can determine access rights
2803 * with a simple stat of the file, and then compare device and
2804 * inode to make sure we did stat() on the same file we opened.
2805 * Then we just have to make sure he or she can execute it.
2808 struct stat tmpstatbuf;
2812 setreuid(PL_euid,PL_uid) < 0
2815 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2818 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2819 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2820 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2821 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2822 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2823 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2824 Perl_croak(aTHX_ "Permission denied");
2826 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2827 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2828 (void)PerlIO_close(PL_rsfp);
2829 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2830 PerlIO_printf(PL_rsfp,
2831 "User %"Uid_t_f" tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2832 (Filename of set-id script was %s, uid %"Uid_t_f" gid %"Gid_t_f".)\n\nSincerely,\nperl\n",
2833 PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2834 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
2836 PL_statbuf.st_uid, PL_statbuf.st_gid);
2837 (void)PerlProc_pclose(PL_rsfp);
2839 Perl_croak(aTHX_ "Permission denied\n");
2843 setreuid(PL_uid,PL_euid) < 0
2845 # if defined(HAS_SETRESUID)
2846 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2849 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2850 Perl_croak(aTHX_ "Can't reswap uid and euid");
2851 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2852 Perl_croak(aTHX_ "Permission denied\n");
2854 #endif /* HAS_SETREUID */
2855 #endif /* IAMSUID */
2857 if (!S_ISREG(PL_statbuf.st_mode))
2858 Perl_croak(aTHX_ "Permission denied");
2859 if (PL_statbuf.st_mode & S_IWOTH)
2860 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2861 PL_doswitches = FALSE; /* -s is insecure in suid */
2862 CopLINE_inc(PL_curcop);
2863 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2864 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2865 Perl_croak(aTHX_ "No #! line");
2866 s = SvPV(PL_linestr,n_a)+2;
2868 while (!isSPACE(*s)) s++;
2869 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2870 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2871 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2872 Perl_croak(aTHX_ "Not a perl script");
2873 while (*s == ' ' || *s == '\t') s++;
2875 * #! arg must be what we saw above. They can invoke it by
2876 * mentioning suidperl explicitly, but they may not add any strange
2877 * arguments beyond what #! says if they do invoke suidperl that way.
2879 len = strlen(validarg);
2880 if (strEQ(validarg," PHOOEY ") ||
2881 strnNE(s,validarg,len) || !isSPACE(s[len]))
2882 Perl_croak(aTHX_ "Args must match #! line");
2885 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2886 PL_euid == PL_statbuf.st_uid)
2888 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2889 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2890 #endif /* IAMSUID */
2892 if (PL_euid) { /* oops, we're not the setuid root perl */
2893 (void)PerlIO_close(PL_rsfp);
2896 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2897 (int)PERL_REVISION, (int)PERL_VERSION,
2898 (int)PERL_SUBVERSION), PL_origargv);
2900 Perl_croak(aTHX_ "Can't do setuid\n");
2903 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2905 (void)setegid(PL_statbuf.st_gid);
2908 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2910 #ifdef HAS_SETRESGID
2911 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2913 PerlProc_setgid(PL_statbuf.st_gid);
2917 if (PerlProc_getegid() != PL_statbuf.st_gid)
2918 Perl_croak(aTHX_ "Can't do setegid!\n");
2920 if (PL_statbuf.st_mode & S_ISUID) {
2921 if (PL_statbuf.st_uid != PL_euid)
2923 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2926 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2928 #ifdef HAS_SETRESUID
2929 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2931 PerlProc_setuid(PL_statbuf.st_uid);
2935 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2936 Perl_croak(aTHX_ "Can't do seteuid!\n");
2938 else if (PL_uid) { /* oops, mustn't run as root */
2940 (void)seteuid((Uid_t)PL_uid);
2943 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2945 #ifdef HAS_SETRESUID
2946 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2948 PerlProc_setuid((Uid_t)PL_uid);
2952 if (PerlProc_geteuid() != PL_uid)
2953 Perl_croak(aTHX_ "Can't do seteuid!\n");
2956 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2957 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
2960 else if (PL_preprocess)
2961 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
2962 else if (fdscript >= 0)
2963 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
2965 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
2967 /* We absolutely must clear out any saved ids here, so we */
2968 /* exec the real perl, substituting fd script for scriptname. */
2969 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2970 PerlIO_rewind(PL_rsfp);
2971 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2972 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2973 if (!PL_origargv[which])
2974 Perl_croak(aTHX_ "Permission denied");
2975 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
2976 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
2977 #if defined(HAS_FCNTL) && defined(F_SETFD)
2978 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
2980 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
2981 (int)PERL_REVISION, (int)PERL_VERSION,
2982 (int)PERL_SUBVERSION), PL_origargv);/* try again */
2983 Perl_croak(aTHX_ "Can't do setuid\n");
2984 #endif /* IAMSUID */
2986 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
2987 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
2989 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
2990 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
2992 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
2995 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2996 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2997 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
2998 /* not set-id, must be wrapped */
3004 S_find_beginning(pTHX)
3006 register char *s, *s2;
3008 /* skip forward in input to the real script? */
3011 #ifdef MACOS_TRADITIONAL
3012 /* Since the Mac OS does not honor !# arguments for us, we do it ourselves */
3014 while (PL_doextract || gMacPerl_AlwaysExtract) {
3015 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3016 if (!gMacPerl_AlwaysExtract)
3017 Perl_croak(aTHX_ "No Perl script found in input\n");
3019 if (PL_doextract) /* require explicit override ? */
3020 if (!OverrideExtract(PL_origfilename))
3021 Perl_croak(aTHX_ "User aborted script\n");
3023 PL_doextract = FALSE;
3025 /* Pater peccavi, file does not have #! */
3026 PerlIO_rewind(PL_rsfp);
3031 while (PL_doextract) {
3032 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3033 Perl_croak(aTHX_ "No Perl script found in input\n");
3035 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3036 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3037 PL_doextract = FALSE;
3038 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3040 while (*s == ' ' || *s == '\t') s++;
3042 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3043 if (strnEQ(s2-4,"perl",4))
3045 while ((s = moreswitches(s)))
3056 PL_uid = PerlProc_getuid();
3057 PL_euid = PerlProc_geteuid();
3058 PL_gid = PerlProc_getgid();
3059 PL_egid = PerlProc_getegid();
3061 PL_uid |= PL_gid << 16;
3062 PL_euid |= PL_egid << 16;
3064 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3068 S_forbid_setid(pTHX_ char *s)
3070 if (PL_euid != PL_uid)
3071 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3072 if (PL_egid != PL_gid)
3073 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3077 Perl_init_debugger(pTHX)
3080 HV *ostash = PL_curstash;
3082 PL_curstash = PL_debstash;
3083 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3084 AvREAL_off(PL_dbargs);
3085 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3086 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3087 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3088 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3089 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3090 sv_setiv(PL_DBsingle, 0);
3091 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3092 sv_setiv(PL_DBtrace, 0);
3093 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3094 sv_setiv(PL_DBsignal, 0);
3095 PL_curstash = ostash;
3098 #ifndef STRESS_REALLOC
3099 #define REASONABLE(size) (size)
3101 #define REASONABLE(size) (1) /* unreasonable */
3105 Perl_init_stacks(pTHX)
3107 /* start with 128-item stack and 8K cxstack */
3108 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3109 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3110 PL_curstackinfo->si_type = PERLSI_MAIN;
3111 PL_curstack = PL_curstackinfo->si_stack;
3112 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3114 PL_stack_base = AvARRAY(PL_curstack);
3115 PL_stack_sp = PL_stack_base;
3116 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3118 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3121 PL_tmps_max = REASONABLE(128);
3123 New(54,PL_markstack,REASONABLE(32),I32);
3124 PL_markstack_ptr = PL_markstack;
3125 PL_markstack_max = PL_markstack + REASONABLE(32);
3129 New(54,PL_scopestack,REASONABLE(32),I32);
3130 PL_scopestack_ix = 0;
3131 PL_scopestack_max = REASONABLE(32);
3133 New(54,PL_savestack,REASONABLE(128),ANY);
3134 PL_savestack_ix = 0;
3135 PL_savestack_max = REASONABLE(128);
3137 New(54,PL_retstack,REASONABLE(16),OP*);
3139 PL_retstack_max = REASONABLE(16);
3148 while (PL_curstackinfo->si_next)
3149 PL_curstackinfo = PL_curstackinfo->si_next;
3150 while (PL_curstackinfo) {
3151 PERL_SI *p = PL_curstackinfo->si_prev;
3152 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3153 Safefree(PL_curstackinfo->si_cxstack);
3154 Safefree(PL_curstackinfo);
3155 PL_curstackinfo = p;
3157 Safefree(PL_tmps_stack);
3158 Safefree(PL_markstack);
3159 Safefree(PL_scopestack);
3160 Safefree(PL_savestack);
3161 Safefree(PL_retstack);
3165 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3176 lex_start(PL_linestr);
3178 PL_subname = newSVpvn("main",4);
3182 S_init_predump_symbols(pTHX)
3188 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3189 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3190 GvMULTI_on(PL_stdingv);
3191 io = GvIOp(PL_stdingv);
3192 IoIFP(io) = PerlIO_stdin();
3193 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3195 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3197 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3200 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3202 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3204 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3206 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3207 GvMULTI_on(PL_stderrgv);
3208 io = GvIOp(PL_stderrgv);
3209 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3210 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3212 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3214 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3217 Safefree(PL_osname);
3218 PL_osname = savepv(OSNAME);
3222 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3229 argc--,argv++; /* skip name of script */
3230 if (PL_doswitches) {
3231 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3234 if (argv[0][1] == '-' && !argv[0][2]) {
3238 if ((s = strchr(argv[0], '='))) {
3240 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3243 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3246 PL_toptarget = NEWSV(0,0);
3247 sv_upgrade(PL_toptarget, SVt_PVFM);
3248 sv_setpvn(PL_toptarget, "", 0);
3249 PL_bodytarget = NEWSV(0,0);
3250 sv_upgrade(PL_bodytarget, SVt_PVFM);
3251 sv_setpvn(PL_bodytarget, "", 0);
3252 PL_formtarget = PL_bodytarget;
3255 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3256 #ifdef MACOS_TRADITIONAL
3257 /* $0 is not majick on a Mac */
3258 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3260 sv_setpv(GvSV(tmpgv),PL_origfilename);
3261 magicname("0", "0", 1);
3264 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3266 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3268 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3270 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3271 GvMULTI_on(PL_argvgv);
3272 (void)gv_AVadd(PL_argvgv);
3273 av_clear(GvAVn(PL_argvgv));
3274 for (; argc > 0; argc--,argv++) {
3275 SV *sv = newSVpv(argv[0],0);
3276 av_push(GvAVn(PL_argvgv),sv);
3277 if (PL_widesyscalls)
3278 (void)sv_utf8_decode(sv);
3281 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3283 GvMULTI_on(PL_envgv);
3284 hv = GvHVn(PL_envgv);
3285 hv_magic(hv, PL_envgv, 'E');
3286 #if !defined( VMS) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) /* VMS doesn't have environ array */
3287 /* Note that if the supplied env parameter is actually a copy
3288 of the global environ then it may now point to free'd memory
3289 if the environment has been modified since. To avoid this
3290 problem we treat env==NULL as meaning 'use the default'
3295 environ[0] = Nullch;
3296 for (; *env; env++) {
3297 if (!(s = strchr(*env,'=')))
3303 sv = newSVpv(s--,0);
3304 (void)hv_store(hv, *env, s - *env, sv, 0);
3306 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3307 /* Sins of the RTL. See note in my_setenv(). */
3308 (void)PerlEnv_putenv(savepv(*env));
3312 #ifdef DYNAMIC_ENV_FETCH
3313 HvNAME(hv) = savepv(ENV_HV_NAME);
3317 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3318 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3322 S_init_perllib(pTHX)
3327 s = PerlEnv_getenv("PERL5LIB");
3329 incpush(s, TRUE, TRUE);
3331 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3333 /* Treat PERL5?LIB as a possible search list logical name -- the
3334 * "natural" VMS idiom for a Unix path string. We allow each
3335 * element to be a set of |-separated directories for compatibility.
3339 if (my_trnlnm("PERL5LIB",buf,0))
3340 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3342 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3346 /* Use the ~-expanded versions of APPLLIB (undocumented),
3347 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3350 incpush(APPLLIB_EXP, TRUE, TRUE);
3354 incpush(ARCHLIB_EXP, FALSE, FALSE);
3356 #ifdef MACOS_TRADITIONAL
3358 struct stat tmpstatbuf;
3359 SV * privdir = NEWSV(55, 0);
3360 char * macperl = PerlEnv_getenv("MACPERL");
3365 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3366 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3367 incpush(SvPVX(privdir), TRUE, FALSE);
3368 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3369 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3370 incpush(SvPVX(privdir), TRUE, FALSE);
3372 SvREFCNT_dec(privdir);
3375 incpush(":", FALSE, FALSE);
3378 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3381 incpush(PRIVLIB_EXP, TRUE, FALSE);
3383 incpush(PRIVLIB_EXP, FALSE, FALSE);
3387 /* sitearch is always relative to sitelib on Windows for
3388 * DLL-based path intuition to work correctly */
3389 # if !defined(WIN32)
3390 incpush(SITEARCH_EXP, FALSE, FALSE);
3396 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3398 incpush(SITELIB_EXP, FALSE, FALSE);
3402 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3403 incpush(SITELIB_STEM, FALSE, TRUE);
3406 #ifdef PERL_VENDORARCH_EXP
3407 /* vendorarch is always relative to vendorlib on Windows for
3408 * DLL-based path intuition to work correctly */
3409 # if !defined(WIN32)
3410 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3414 #ifdef PERL_VENDORLIB_EXP
3416 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3418 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3422 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3423 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3426 #ifdef PERL_OTHERLIBDIRS
3427 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3431 incpush(".", FALSE, FALSE);
3432 #endif /* MACOS_TRADITIONAL */
3436 # define PERLLIB_SEP ';'
3439 # define PERLLIB_SEP '|'
3441 # if defined(MACOS_TRADITIONAL)
3442 # define PERLLIB_SEP ','
3444 # define PERLLIB_SEP ':'
3448 #ifndef PERLLIB_MANGLE
3449 # define PERLLIB_MANGLE(s,n) (s)
3453 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3455 SV *subdir = Nullsv;
3460 if (addsubdirs || addoldvers) {
3461 subdir = sv_newmortal();
3464 /* Break at all separators */
3466 SV *libdir = NEWSV(55,0);
3469 /* skip any consecutive separators */
3470 while ( *p == PERLLIB_SEP ) {
3471 /* Uncomment the next line for PATH semantics */
3472 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3476 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3477 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3482 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3483 p = Nullch; /* break out */
3485 #ifdef MACOS_TRADITIONAL
3486 if (!strchr(SvPVX(libdir), ':'))
3487 sv_insert(libdir, 0, 0, ":", 1);
3488 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3489 sv_catpv(libdir, ":");
3493 * BEFORE pushing libdir onto @INC we may first push version- and
3494 * archname-specific sub-directories.
3496 if (addsubdirs || addoldvers) {
3497 #ifdef PERL_INC_VERSION_LIST
3498 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3499 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3500 const char **incver;
3502 struct stat tmpstatbuf;
3507 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3509 while (unix[len-1] == '/') len--; /* Cosmetic */
3510 sv_usepvn(libdir,unix,len);
3513 PerlIO_printf(Perl_error_log,
3514 "Failed to unixify @INC element \"%s\"\n",
3518 #ifdef MACOS_TRADITIONAL
3519 #define PERL_AV_SUFFIX_FMT ""
3520 #define PERL_ARCH_FMT ":%s"
3522 #define PERL_AV_SUFFIX_FMT "/"
3523 #define PERL_ARCH_FMT "/%s"
3525 /* .../version/archname if -d .../version/archname */
3526 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT PERL_ARCH_FMT,
3528 (int)PERL_REVISION, (int)PERL_VERSION,
3529 (int)PERL_SUBVERSION, ARCHNAME);
3530 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3531 S_ISDIR(tmpstatbuf.st_mode))
3532 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3534 /* .../version if -d .../version */
3535 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT, libdir,
3536 (int)PERL_REVISION, (int)PERL_VERSION,
3537 (int)PERL_SUBVERSION);
3538 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3539 S_ISDIR(tmpstatbuf.st_mode))
3540 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3542 /* .../archname if -d .../archname */
3543 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3544 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3545 S_ISDIR(tmpstatbuf.st_mode))
3546 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3549 #ifdef PERL_INC_VERSION_LIST
3551 for (incver = incverlist; *incver; incver++) {
3552 /* .../xxx if -d .../xxx */
3553 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3554 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3555 S_ISDIR(tmpstatbuf.st_mode))
3556 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3562 /* finally push this lib directory on the end of @INC */
3563 av_push(GvAVn(PL_incgv), libdir);
3568 STATIC struct perl_thread *
3569 S_init_main_thread(pTHX)
3571 #if !defined(PERL_IMPLICIT_CONTEXT)
3572 struct perl_thread *thr;
3576 Newz(53, thr, 1, struct perl_thread);
3577 PL_curcop = &PL_compiling;
3578 thr->interp = PERL_GET_INTERP;
3579 thr->cvcache = newHV();
3580 thr->threadsv = newAV();
3581 /* thr->threadsvp is set when find_threadsv is called */
3582 thr->specific = newAV();
3583 thr->flags = THRf_R_JOINABLE;
3584 MUTEX_INIT(&thr->mutex);
3585 /* Handcraft thrsv similarly to mess_sv */
3586 New(53, PL_thrsv, 1, SV);
3587 Newz(53, xpv, 1, XPV);
3588 SvFLAGS(PL_thrsv) = SVt_PV;
3589 SvANY(PL_thrsv) = (void*)xpv;
3590 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3591 SvPVX(PL_thrsv) = (char*)thr;
3592 SvCUR_set(PL_thrsv, sizeof(thr));
3593 SvLEN_set(PL_thrsv, sizeof(thr));
3594 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3595 thr->oursv = PL_thrsv;
3596 PL_chopset = " \n-";
3599 MUTEX_LOCK(&PL_threads_mutex);
3604 MUTEX_UNLOCK(&PL_threads_mutex);
3606 #ifdef HAVE_THREAD_INTERN
3607 Perl_init_thread_intern(thr);
3610 #ifdef SET_THREAD_SELF
3611 SET_THREAD_SELF(thr);
3613 thr->self = pthread_self();
3614 #endif /* SET_THREAD_SELF */
3618 * These must come after the SET_THR because sv_setpvn does
3619 * SvTAINT and the taint fields require dTHR.
3621 PL_toptarget = NEWSV(0,0);
3622 sv_upgrade(PL_toptarget, SVt_PVFM);
3623 sv_setpvn(PL_toptarget, "", 0);
3624 PL_bodytarget = NEWSV(0,0);
3625 sv_upgrade(PL_bodytarget, SVt_PVFM);
3626 sv_setpvn(PL_bodytarget, "", 0);
3627 PL_formtarget = PL_bodytarget;
3628 thr->errsv = newSVpvn("", 0);
3629 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3632 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3633 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3634 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3635 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3636 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3638 PL_reginterp_cnt = 0;
3642 #endif /* USE_THREADS */
3645 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3649 line_t oldline = CopLINE(PL_curcop);
3655 while (AvFILL(paramList) >= 0) {
3656 cv = (CV*)av_shift(paramList);
3658 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3659 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3665 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3669 (void)SvPV(atsv, len);
3672 PL_curcop = &PL_compiling;
3673 CopLINE_set(PL_curcop, oldline);
3674 if (paramList == PL_beginav)
3675 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3677 Perl_sv_catpvf(aTHX_ atsv,
3678 "%s failed--call queue aborted",
3679 paramList == PL_checkav ? "CHECK"
3680 : paramList == PL_initav ? "INIT"
3682 while (PL_scopestack_ix > oldscope)
3685 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3692 /* my_exit() was called */
3693 while (PL_scopestack_ix > oldscope)
3696 PL_curstash = PL_defstash;
3697 PL_curcop = &PL_compiling;
3698 CopLINE_set(PL_curcop, oldline);
3700 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3701 if (paramList == PL_beginav)
3702 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3704 Perl_croak(aTHX_ "%s failed--call queue aborted",
3705 paramList == PL_checkav ? "CHECK"
3706 : paramList == PL_initav ? "INIT"
3713 PL_curcop = &PL_compiling;
3714 CopLINE_set(PL_curcop, oldline);
3717 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3725 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3727 S_vcall_list_body(pTHX_ va_list args)
3729 CV *cv = va_arg(args, CV*);
3730 return call_list_body(cv);
3735 S_call_list_body(pTHX_ CV *cv)
3737 PUSHMARK(PL_stack_sp);
3738 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3743 Perl_my_exit(pTHX_ U32 status)
3747 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3748 thr, (unsigned long) status));
3757 STATUS_NATIVE_SET(status);
3764 Perl_my_failure_exit(pTHX)
3767 if (vaxc$errno & 1) {
3768 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3769 STATUS_NATIVE_SET(44);
3772 if (!vaxc$errno && errno) /* unlikely */
3773 STATUS_NATIVE_SET(44);
3775 STATUS_NATIVE_SET(vaxc$errno);
3780 STATUS_POSIX_SET(errno);
3782 exitstatus = STATUS_POSIX >> 8;
3783 if (exitstatus & 255)
3784 STATUS_POSIX_SET(exitstatus);
3786 STATUS_POSIX_SET(255);
3793 S_my_exit_jump(pTHX)
3796 register PERL_CONTEXT *cx;
3801 SvREFCNT_dec(PL_e_script);
3802 PL_e_script = Nullsv;
3805 POPSTACK_TO(PL_mainstack);
3806 if (cxstack_ix >= 0) {
3809 POPBLOCK(cx,PL_curpm);
3821 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3824 p = SvPVX(PL_e_script);
3825 nl = strchr(p, '\n');
3826 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3828 filter_del(read_e_script);
3831 sv_catpvn(buf_sv, p, nl-p);
3832 sv_chop(PL_e_script, nl);