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)
1613 /* See G_* flags in cop.h */
1616 LOGOP myop; /* fake syntax tree node */
1621 bool oldcatch = CATCH_GET;
1626 if (flags & G_DISCARD) {
1631 Zero(&myop, 1, LOGOP);
1632 myop.op_next = Nullop;
1633 if (!(flags & G_NOARGS))
1634 myop.op_flags |= OPf_STACKED;
1635 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1636 (flags & G_ARRAY) ? OPf_WANT_LIST :
1641 EXTEND(PL_stack_sp, 1);
1642 *++PL_stack_sp = sv;
1644 oldscope = PL_scopestack_ix;
1646 if (PERLDB_SUB && PL_curstash != PL_debstash
1647 /* Handle first BEGIN of -d. */
1648 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1649 /* Try harder, since this may have been a sighandler, thus
1650 * curstash may be meaningless. */
1651 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1652 && !(flags & G_NODEBUG))
1653 PL_op->op_private |= OPpENTERSUB_DB;
1655 if (flags & G_METHOD) {
1656 Zero(&method_op, 1, UNOP);
1657 method_op.op_next = PL_op;
1658 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1659 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1663 if (!(flags & G_EVAL)) {
1665 call_body((OP*)&myop, FALSE);
1666 retval = PL_stack_sp - (PL_stack_base + oldmark);
1667 CATCH_SET(oldcatch);
1670 cLOGOP->op_other = PL_op;
1672 /* we're trying to emulate pp_entertry() here */
1674 register PERL_CONTEXT *cx;
1675 I32 gimme = GIMME_V;
1680 push_return(Nullop);
1681 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1683 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1685 PL_in_eval = EVAL_INEVAL;
1686 if (flags & G_KEEPERR)
1687 PL_in_eval |= EVAL_KEEPERR;
1693 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1695 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1702 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1704 call_body((OP*)&myop, FALSE);
1706 retval = PL_stack_sp - (PL_stack_base + oldmark);
1707 if (!(flags & G_KEEPERR))
1714 /* my_exit() was called */
1715 PL_curstash = PL_defstash;
1718 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1719 Perl_croak(aTHX_ "Callback called exit");
1724 PL_op = PL_restartop;
1728 PL_stack_sp = PL_stack_base + oldmark;
1729 if (flags & G_ARRAY)
1733 *++PL_stack_sp = &PL_sv_undef;
1738 if (PL_scopestack_ix > oldscope) {
1742 register PERL_CONTEXT *cx;
1754 if (flags & G_DISCARD) {
1755 PL_stack_sp = PL_stack_base + oldmark;
1764 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1766 S_vcall_body(pTHX_ va_list args)
1768 OP *myop = va_arg(args, OP*);
1769 int is_eval = va_arg(args, int);
1771 call_body(myop, is_eval);
1777 S_call_body(pTHX_ OP *myop, int is_eval)
1781 if (PL_op == myop) {
1783 PL_op = Perl_pp_entereval(aTHX);
1785 PL_op = Perl_pp_entersub(aTHX);
1791 /* Eval a string. The G_EVAL flag is always assumed. */
1794 =for apidoc p||eval_sv
1796 Tells Perl to C<eval> the string in the SV.
1802 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1804 /* See G_* flags in cop.h */
1807 UNOP myop; /* fake syntax tree node */
1808 I32 oldmark = SP - PL_stack_base;
1815 if (flags & G_DISCARD) {
1822 Zero(PL_op, 1, UNOP);
1823 EXTEND(PL_stack_sp, 1);
1824 *++PL_stack_sp = sv;
1825 oldscope = PL_scopestack_ix;
1827 if (!(flags & G_NOARGS))
1828 myop.op_flags = OPf_STACKED;
1829 myop.op_next = Nullop;
1830 myop.op_type = OP_ENTEREVAL;
1831 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1832 (flags & G_ARRAY) ? OPf_WANT_LIST :
1834 if (flags & G_KEEPERR)
1835 myop.op_flags |= OPf_SPECIAL;
1837 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1839 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1846 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1848 call_body((OP*)&myop,TRUE);
1850 retval = PL_stack_sp - (PL_stack_base + oldmark);
1851 if (!(flags & G_KEEPERR))
1858 /* my_exit() was called */
1859 PL_curstash = PL_defstash;
1862 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1863 Perl_croak(aTHX_ "Callback called exit");
1868 PL_op = PL_restartop;
1872 PL_stack_sp = PL_stack_base + oldmark;
1873 if (flags & G_ARRAY)
1877 *++PL_stack_sp = &PL_sv_undef;
1883 if (flags & G_DISCARD) {
1884 PL_stack_sp = PL_stack_base + oldmark;
1894 =for apidoc p||eval_pv
1896 Tells Perl to C<eval> the given string and return an SV* result.
1902 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1905 SV* sv = newSVpv(p, 0);
1908 eval_sv(sv, G_SCALAR);
1915 if (croak_on_error && SvTRUE(ERRSV)) {
1917 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1923 /* Require a module. */
1926 =for apidoc p||require_pv
1928 Tells Perl to C<require> a module.
1934 Perl_require_pv(pTHX_ const char *pv)
1938 PUSHSTACKi(PERLSI_REQUIRE);
1940 sv = sv_newmortal();
1941 sv_setpv(sv, "require '");
1944 eval_sv(sv, G_DISCARD);
1950 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
1954 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
1955 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1959 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
1961 /* This message really ought to be max 23 lines.
1962 * Removed -h because the user already knows that opton. Others? */
1964 static char *usage_msg[] = {
1965 "-0[octal] specify record separator (\\0, if no argument)",
1966 "-a autosplit mode with -n or -p (splits $_ into @F)",
1967 "-C enable native wide character system interfaces",
1968 "-c check syntax only (runs BEGIN and CHECK blocks)",
1969 "-d[:debugger] run program under debugger",
1970 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1971 "-e 'command' one line of program (several -e's allowed, omit programfile)",
1972 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
1973 "-i[extension] edit <> files in place (makes backup if extension supplied)",
1974 "-Idirectory specify @INC/#include directory (several -I's allowed)",
1975 "-l[octal] enable line ending processing, specifies line terminator",
1976 "-[mM][-]module execute `use/no module...' before executing program",
1977 "-n assume 'while (<>) { ... }' loop around program",
1978 "-p assume loop like -n but print line also, like sed",
1979 "-P run program through C preprocessor before compilation",
1980 "-s enable rudimentary parsing for switches after programfile",
1981 "-S look for programfile using PATH environment variable",
1982 "-T enable tainting checks",
1983 "-u dump core after parsing program",
1984 "-U allow unsafe operations",
1985 "-v print version, subversion (includes VERY IMPORTANT perl info)",
1986 "-V[:variable] print configuration summary (or a single Config.pm variable)",
1987 "-w enable many useful warnings (RECOMMENDED)",
1988 "-W enable all warnings",
1989 "-X disable all warnings",
1990 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
1994 char **p = usage_msg;
1996 PerlIO_printf(PerlIO_stdout(),
1997 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2000 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2003 /* This routine handles any switches that can be given during run */
2006 Perl_moreswitches(pTHX_ char *s)
2015 numlen = 0; /* disallow underscores */
2016 rschar = (U32)scan_oct(s, 4, &numlen);
2017 SvREFCNT_dec(PL_nrs);
2018 if (rschar & ~((U8)~0))
2019 PL_nrs = &PL_sv_undef;
2020 else if (!rschar && numlen >= 2)
2021 PL_nrs = newSVpvn("", 0);
2024 PL_nrs = newSVpvn(&ch, 1);
2029 PL_widesyscalls = TRUE;
2034 PL_splitstr = savepv(s + 1);
2048 if (*s == ':' || *s == '=') {
2049 my_setenv("PERL5DB", Perl_form(aTHX_ "use Devel::%s;", ++s));
2053 PL_perldb = PERLDB_ALL;
2061 if (isALPHA(s[1])) {
2062 static char debopts[] = "psltocPmfrxuLHXDS";
2065 for (s++; *s && (d = strchr(debopts,*s)); s++)
2066 PL_debug |= 1 << (d - debopts);
2069 PL_debug = atoi(s+1);
2070 for (s++; isDIGIT(*s); s++) ;
2072 PL_debug |= 0x80000000;
2075 if (ckWARN_d(WARN_DEBUGGING))
2076 Perl_warner(aTHX_ WARN_DEBUGGING,
2077 "Recompile perl with -DDEBUGGING to use -D switch\n");
2078 for (s++; isALNUM(*s); s++) ;
2084 usage(PL_origargv[0]);
2088 Safefree(PL_inplace);
2089 PL_inplace = savepv(s+1);
2091 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2094 if (*s == '-') /* Additional switches on #! line. */
2098 case 'I': /* -I handled both here and in parse_perl() */
2101 while (*s && isSPACE(*s))
2106 /* ignore trailing spaces (possibly followed by other switches) */
2108 for (e = p; *e && !isSPACE(*e); e++) ;
2112 } while (*p && *p != '-');
2113 e = savepvn(s, e-s);
2114 incpush(e, TRUE, TRUE);
2121 Perl_croak(aTHX_ "No directory specified for -I");
2129 PL_ors = savepv("\n");
2131 numlen = 0; /* disallow underscores */
2132 *PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2137 if (RsPARA(PL_nrs)) {
2142 PL_ors = SvPV(PL_nrs, PL_orslen);
2143 PL_ors = savepvn(PL_ors, PL_orslen);
2147 forbid_setid("-M"); /* XXX ? */
2150 forbid_setid("-m"); /* XXX ? */
2155 /* -M-foo == 'no foo' */
2156 if (*s == '-') { use = "no "; ++s; }
2157 sv = newSVpv(use,0);
2159 /* We allow -M'Module qw(Foo Bar)' */
2160 while(isALNUM(*s) || *s==':') ++s;
2162 sv_catpv(sv, start);
2163 if (*(start-1) == 'm') {
2165 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2166 sv_catpv( sv, " ()");
2170 Perl_croak(aTHX_ "Module name required with -%c option",
2172 sv_catpvn(sv, start, s-start);
2173 sv_catpv(sv, " split(/,/,q{");
2179 PL_preambleav = newAV();
2180 av_push(PL_preambleav, sv);
2183 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2195 PL_doswitches = TRUE;
2200 Perl_croak(aTHX_ "Too late for \"-T\" option");
2204 #ifdef MACOS_TRADITIONAL
2205 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2207 PL_do_undump = TRUE;
2215 PerlIO_printf(PerlIO_stdout(),
2216 Perl_form(aTHX_ "\nThis is perl, v%vd built for %s",
2217 PL_patchlevel, ARCHNAME));
2218 #if defined(LOCAL_PATCH_COUNT)
2219 if (LOCAL_PATCH_COUNT > 0)
2220 PerlIO_printf(PerlIO_stdout(),
2221 "\n(with %d registered patch%s, "
2222 "see perl -V for more detail)",
2223 (int)LOCAL_PATCH_COUNT,
2224 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2227 PerlIO_printf(PerlIO_stdout(),
2228 "\n\nCopyright 1987-2000, Larry Wall\n");
2230 PerlIO_printf(PerlIO_stdout(),
2231 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2234 PerlIO_printf(PerlIO_stdout(),
2235 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2236 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2239 PerlIO_printf(PerlIO_stdout(),
2240 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2241 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2244 PerlIO_printf(PerlIO_stdout(),
2245 "atariST series port, ++jrb bammi@cadence.com\n");
2248 PerlIO_printf(PerlIO_stdout(),
2249 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2252 PerlIO_printf(PerlIO_stdout(),
2253 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
2256 PerlIO_printf(PerlIO_stdout(),
2257 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2260 PerlIO_printf(PerlIO_stdout(),
2261 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2264 PerlIO_printf(PerlIO_stdout(),
2265 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2268 PerlIO_printf(PerlIO_stdout(),
2269 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2272 PerlIO_printf(PerlIO_stdout(),
2273 "MiNT port by Guido Flohr, 1997-1999\n");
2276 PerlIO_printf(PerlIO_stdout(),
2277 "EPOC port by Olaf Flebbe, 1999-2000\n");
2279 #ifdef BINARY_BUILD_NOTICE
2280 BINARY_BUILD_NOTICE;
2282 PerlIO_printf(PerlIO_stdout(),
2284 Perl may be copied only under the terms of either the Artistic License or the\n\
2285 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
2286 Complete documentation for Perl, including FAQ lists, should be found on\n\
2287 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2288 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2291 if (! (PL_dowarn & G_WARN_ALL_MASK))
2292 PL_dowarn |= G_WARN_ON;
2296 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2297 PL_compiling.cop_warnings = pWARN_ALL ;
2301 PL_dowarn = G_WARN_ALL_OFF;
2302 PL_compiling.cop_warnings = pWARN_NONE ;
2307 if (s[1] == '-') /* Additional switches on #! line. */
2312 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2318 #ifdef ALTERNATE_SHEBANG
2319 case 'S': /* OS/2 needs -S on "extproc" line. */
2327 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2332 /* compliments of Tom Christiansen */
2334 /* unexec() can be found in the Gnu emacs distribution */
2335 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2338 Perl_my_unexec(pTHX)
2346 prog = newSVpv(BIN_EXP, 0);
2347 sv_catpv(prog, "/perl");
2348 file = newSVpv(PL_origfilename, 0);
2349 sv_catpv(file, ".perldump");
2351 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2352 /* unexec prints msg to stderr in case of failure */
2353 PerlProc_exit(status);
2356 # include <lib$routines.h>
2357 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2359 ABORT(); /* for use with undump */
2364 /* initialize curinterp */
2369 #ifdef PERL_OBJECT /* XXX kludge */
2372 PL_chopset = " \n-"; \
2373 PL_copline = NOLINE; \
2374 PL_curcop = &PL_compiling;\
2375 PL_curcopdb = NULL; \
2377 PL_dumpindent = 4; \
2378 PL_laststatval = -1; \
2379 PL_laststype = OP_STAT; \
2380 PL_maxscream = -1; \
2381 PL_maxsysfd = MAXSYSFD; \
2382 PL_statname = Nullsv; \
2383 PL_tmps_floor = -1; \
2385 PL_op_mask = NULL; \
2386 PL_laststatval = -1; \
2387 PL_laststype = OP_STAT; \
2388 PL_mess_sv = Nullsv; \
2389 PL_splitstr = " "; \
2390 PL_generation = 100; \
2391 PL_exitlist = NULL; \
2392 PL_exitlistlen = 0; \
2394 PL_in_clean_objs = FALSE; \
2395 PL_in_clean_all = FALSE; \
2396 PL_profiledata = NULL; \
2398 PL_rsfp_filters = Nullav; \
2403 # ifdef MULTIPLICITY
2404 # define PERLVAR(var,type)
2405 # define PERLVARA(var,n,type)
2406 # if defined(PERL_IMPLICIT_CONTEXT)
2407 # if defined(USE_THREADS)
2408 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2409 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2410 # else /* !USE_THREADS */
2411 # define PERLVARI(var,type,init) aTHX->var = init;
2412 # define PERLVARIC(var,type,init) aTHX->var = init;
2413 # endif /* USE_THREADS */
2415 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2416 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2418 # include "intrpvar.h"
2419 # ifndef USE_THREADS
2420 # include "thrdvar.h"
2427 # define PERLVAR(var,type)
2428 # define PERLVARA(var,n,type)
2429 # define PERLVARI(var,type,init) PL_##var = init;
2430 # define PERLVARIC(var,type,init) PL_##var = init;
2431 # include "intrpvar.h"
2432 # ifndef USE_THREADS
2433 # include "thrdvar.h"
2445 S_init_main_stash(pTHX)
2450 /* Note that strtab is a rather special HV. Assumptions are made
2451 about not iterating on it, and not adding tie magic to it.
2452 It is properly deallocated in perl_destruct() */
2453 PL_strtab = newHV();
2455 MUTEX_INIT(&PL_strtab_mutex);
2457 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2458 hv_ksplit(PL_strtab, 512);
2460 PL_curstash = PL_defstash = newHV();
2461 PL_curstname = newSVpvn("main",4);
2462 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2463 SvREFCNT_dec(GvHV(gv));
2464 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2466 HvNAME(PL_defstash) = savepv("main");
2467 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2468 GvMULTI_on(PL_incgv);
2469 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2470 GvMULTI_on(PL_hintgv);
2471 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2472 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2473 GvMULTI_on(PL_errgv);
2474 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2475 GvMULTI_on(PL_replgv);
2476 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2477 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2478 sv_setpvn(ERRSV, "", 0);
2479 PL_curstash = PL_defstash;
2480 CopSTASH_set(&PL_compiling, PL_defstash);
2481 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2482 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2483 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2484 /* We must init $/ before switches are processed. */
2485 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2489 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2496 PL_origfilename = savepv("-e");
2499 /* if find_script() returns, it returns a malloc()-ed value */
2500 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2502 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2503 char *s = scriptname + 8;
2504 *fdscript = atoi(s);
2508 scriptname = savepv(s + 1);
2509 Safefree(PL_origfilename);
2510 PL_origfilename = scriptname;
2515 CopFILE_set(PL_curcop, PL_origfilename);
2516 if (strEQ(PL_origfilename,"-"))
2518 if (*fdscript >= 0) {
2519 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2520 #if defined(HAS_FCNTL) && defined(F_SETFD)
2522 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2525 else if (PL_preprocess) {
2526 char *cpp_cfg = CPPSTDIN;
2527 SV *cpp = newSVpvn("",0);
2528 SV *cmd = NEWSV(0,0);
2530 if (strEQ(cpp_cfg, "cppstdin"))
2531 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2532 sv_catpv(cpp, cpp_cfg);
2534 sv_catpvn(sv, "-I", 2);
2535 sv_catpv(sv,PRIVLIB_EXP);
2537 #if defined(MSDOS) || defined(WIN32)
2538 Perl_sv_setpvf(aTHX_ cmd, "\
2539 sed %s -e \"/^[^#]/b\" \
2540 -e \"/^#[ ]*include[ ]/b\" \
2541 -e \"/^#[ ]*define[ ]/b\" \
2542 -e \"/^#[ ]*if[ ]/b\" \
2543 -e \"/^#[ ]*ifdef[ ]/b\" \
2544 -e \"/^#[ ]*ifndef[ ]/b\" \
2545 -e \"/^#[ ]*else/b\" \
2546 -e \"/^#[ ]*elif[ ]/b\" \
2547 -e \"/^#[ ]*undef[ ]/b\" \
2548 -e \"/^#[ ]*endif/b\" \
2550 %s | %"SVf" -C %"SVf" %s",
2551 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2554 Perl_sv_setpvf(aTHX_ cmd, "\
2555 %s %s -e '/^[^#]/b' \
2556 -e '/^#[ ]*include[ ]/b' \
2557 -e '/^#[ ]*define[ ]/b' \
2558 -e '/^#[ ]*if[ ]/b' \
2559 -e '/^#[ ]*ifdef[ ]/b' \
2560 -e '/^#[ ]*ifndef[ ]/b' \
2561 -e '/^#[ ]*else/b' \
2562 -e '/^#[ ]*elif[ ]/b' \
2563 -e '/^#[ ]*undef[ ]/b' \
2564 -e '/^#[ ]*endif/b' \
2566 %s | %"SVf" %"SVf" %s",
2568 Perl_sv_setpvf(aTHX_ cmd, "\
2569 %s %s -e '/^[^#]/b' \
2570 -e '/^#[ ]*include[ ]/b' \
2571 -e '/^#[ ]*define[ ]/b' \
2572 -e '/^#[ ]*if[ ]/b' \
2573 -e '/^#[ ]*ifdef[ ]/b' \
2574 -e '/^#[ ]*ifndef[ ]/b' \
2575 -e '/^#[ ]*else/b' \
2576 -e '/^#[ ]*elif[ ]/b' \
2577 -e '/^#[ ]*undef[ ]/b' \
2578 -e '/^#[ ]*endif/b' \
2580 %s | %"SVf" -C %"SVf" %s",
2587 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2589 scriptname, cpp, sv, CPPMINUS);
2590 PL_doextract = FALSE;
2591 #ifdef IAMSUID /* actually, this is caught earlier */
2592 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2594 (void)seteuid(PL_uid); /* musn't stay setuid root */
2597 (void)setreuid((Uid_t)-1, PL_uid);
2599 #ifdef HAS_SETRESUID
2600 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2602 PerlProc_setuid(PL_uid);
2606 if (PerlProc_geteuid() != PL_uid)
2607 Perl_croak(aTHX_ "Can't do seteuid!\n");
2609 #endif /* IAMSUID */
2610 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2614 else if (!*scriptname) {
2615 forbid_setid("program input from stdin");
2616 PL_rsfp = PerlIO_stdin();
2619 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2620 #if defined(HAS_FCNTL) && defined(F_SETFD)
2622 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2627 #ifndef IAMSUID /* in case script is not readable before setuid */
2629 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2630 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2633 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2634 (int)PERL_REVISION, (int)PERL_VERSION,
2635 (int)PERL_SUBVERSION), PL_origargv);
2636 Perl_croak(aTHX_ "Can't do setuid\n");
2640 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2641 CopFILE(PL_curcop), Strerror(errno));
2646 * I_SYSSTATVFS HAS_FSTATVFS
2648 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2649 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2650 * here so that metaconfig picks them up. */
2654 S_fd_on_nosuid_fs(pTHX_ int fd)
2656 int check_okay = 0; /* able to do all the required sys/libcalls */
2657 int on_nosuid = 0; /* the fd is on a nosuid fs */
2659 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2660 * fstatvfs() is UNIX98.
2661 * fstatfs() is 4.3 BSD.
2662 * ustat()+getmnt() is pre-4.3 BSD.
2663 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2664 * an irrelevant filesystem while trying to reach the right one.
2667 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2669 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2670 defined(HAS_FSTATVFS)
2671 # define FD_ON_NOSUID_CHECK_OKAY
2672 struct statvfs stfs;
2674 check_okay = fstatvfs(fd, &stfs) == 0;
2675 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2676 # endif /* fstatvfs */
2678 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2679 defined(PERL_MOUNT_NOSUID) && \
2680 defined(HAS_FSTATFS) && \
2681 defined(HAS_STRUCT_STATFS) && \
2682 defined(HAS_STRUCT_STATFS_F_FLAGS)
2683 # define FD_ON_NOSUID_CHECK_OKAY
2686 check_okay = fstatfs(fd, &stfs) == 0;
2687 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2688 # endif /* fstatfs */
2690 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2691 defined(PERL_MOUNT_NOSUID) && \
2692 defined(HAS_FSTAT) && \
2693 defined(HAS_USTAT) && \
2694 defined(HAS_GETMNT) && \
2695 defined(HAS_STRUCT_FS_DATA) && \
2697 # define FD_ON_NOSUID_CHECK_OKAY
2700 if (fstat(fd, &fdst) == 0) {
2702 if (ustat(fdst.st_dev, &us) == 0) {
2704 /* NOSTAT_ONE here because we're not examining fields which
2705 * vary between that case and STAT_ONE. */
2706 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2707 size_t cmplen = sizeof(us.f_fname);
2708 if (sizeof(fsd.fd_req.path) < cmplen)
2709 cmplen = sizeof(fsd.fd_req.path);
2710 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2711 fdst.st_dev == fsd.fd_req.dev) {
2713 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2719 # endif /* fstat+ustat+getmnt */
2721 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2722 defined(HAS_GETMNTENT) && \
2723 defined(HAS_HASMNTOPT) && \
2724 defined(MNTOPT_NOSUID)
2725 # define FD_ON_NOSUID_CHECK_OKAY
2726 FILE *mtab = fopen("/etc/mtab", "r");
2727 struct mntent *entry;
2728 struct stat stb, fsb;
2730 if (mtab && (fstat(fd, &stb) == 0)) {
2731 while (entry = getmntent(mtab)) {
2732 if (stat(entry->mnt_dir, &fsb) == 0
2733 && fsb.st_dev == stb.st_dev)
2735 /* found the filesystem */
2737 if (hasmntopt(entry, MNTOPT_NOSUID))
2740 } /* A single fs may well fail its stat(). */
2745 # endif /* getmntent+hasmntopt */
2748 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2751 #endif /* IAMSUID */
2754 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2760 /* do we need to emulate setuid on scripts? */
2762 /* This code is for those BSD systems that have setuid #! scripts disabled
2763 * in the kernel because of a security problem. Merely defining DOSUID
2764 * in perl will not fix that problem, but if you have disabled setuid
2765 * scripts in the kernel, this will attempt to emulate setuid and setgid
2766 * on scripts that have those now-otherwise-useless bits set. The setuid
2767 * root version must be called suidperl or sperlN.NNN. If regular perl
2768 * discovers that it has opened a setuid script, it calls suidperl with
2769 * the same argv that it had. If suidperl finds that the script it has
2770 * just opened is NOT setuid root, it sets the effective uid back to the
2771 * uid. We don't just make perl setuid root because that loses the
2772 * effective uid we had before invoking perl, if it was different from the
2775 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2776 * be defined in suidperl only. suidperl must be setuid root. The
2777 * Configure script will set this up for you if you want it.
2784 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2785 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2786 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2791 #ifndef HAS_SETREUID
2792 /* On this access check to make sure the directories are readable,
2793 * there is actually a small window that the user could use to make
2794 * filename point to an accessible directory. So there is a faint
2795 * chance that someone could execute a setuid script down in a
2796 * non-accessible directory. I don't know what to do about that.
2797 * But I don't think it's too important. The manual lies when
2798 * it says access() is useful in setuid programs.
2800 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2801 Perl_croak(aTHX_ "Permission denied");
2803 /* If we can swap euid and uid, then we can determine access rights
2804 * with a simple stat of the file, and then compare device and
2805 * inode to make sure we did stat() on the same file we opened.
2806 * Then we just have to make sure he or she can execute it.
2809 struct stat tmpstatbuf;
2813 setreuid(PL_euid,PL_uid) < 0
2816 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2819 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2820 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2821 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2822 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2823 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2824 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2825 Perl_croak(aTHX_ "Permission denied");
2827 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2828 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2829 (void)PerlIO_close(PL_rsfp);
2830 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2831 PerlIO_printf(PL_rsfp,
2832 "User %"Uid_t_f" tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2833 (Filename of set-id script was %s, uid %"Uid_t_f" gid %"Gid_t_f".)\n\nSincerely,\nperl\n",
2834 PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2835 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
2837 PL_statbuf.st_uid, PL_statbuf.st_gid);
2838 (void)PerlProc_pclose(PL_rsfp);
2840 Perl_croak(aTHX_ "Permission denied\n");
2844 setreuid(PL_uid,PL_euid) < 0
2846 # if defined(HAS_SETRESUID)
2847 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2850 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2851 Perl_croak(aTHX_ "Can't reswap uid and euid");
2852 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2853 Perl_croak(aTHX_ "Permission denied\n");
2855 #endif /* HAS_SETREUID */
2856 #endif /* IAMSUID */
2858 if (!S_ISREG(PL_statbuf.st_mode))
2859 Perl_croak(aTHX_ "Permission denied");
2860 if (PL_statbuf.st_mode & S_IWOTH)
2861 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2862 PL_doswitches = FALSE; /* -s is insecure in suid */
2863 CopLINE_inc(PL_curcop);
2864 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2865 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2866 Perl_croak(aTHX_ "No #! line");
2867 s = SvPV(PL_linestr,n_a)+2;
2869 while (!isSPACE(*s)) s++;
2870 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2871 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2872 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2873 Perl_croak(aTHX_ "Not a perl script");
2874 while (*s == ' ' || *s == '\t') s++;
2876 * #! arg must be what we saw above. They can invoke it by
2877 * mentioning suidperl explicitly, but they may not add any strange
2878 * arguments beyond what #! says if they do invoke suidperl that way.
2880 len = strlen(validarg);
2881 if (strEQ(validarg," PHOOEY ") ||
2882 strnNE(s,validarg,len) || !isSPACE(s[len]))
2883 Perl_croak(aTHX_ "Args must match #! line");
2886 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2887 PL_euid == PL_statbuf.st_uid)
2889 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2890 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2891 #endif /* IAMSUID */
2893 if (PL_euid) { /* oops, we're not the setuid root perl */
2894 (void)PerlIO_close(PL_rsfp);
2897 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2898 (int)PERL_REVISION, (int)PERL_VERSION,
2899 (int)PERL_SUBVERSION), PL_origargv);
2901 Perl_croak(aTHX_ "Can't do setuid\n");
2904 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2906 (void)setegid(PL_statbuf.st_gid);
2909 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2911 #ifdef HAS_SETRESGID
2912 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2914 PerlProc_setgid(PL_statbuf.st_gid);
2918 if (PerlProc_getegid() != PL_statbuf.st_gid)
2919 Perl_croak(aTHX_ "Can't do setegid!\n");
2921 if (PL_statbuf.st_mode & S_ISUID) {
2922 if (PL_statbuf.st_uid != PL_euid)
2924 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2927 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2929 #ifdef HAS_SETRESUID
2930 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2932 PerlProc_setuid(PL_statbuf.st_uid);
2936 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2937 Perl_croak(aTHX_ "Can't do seteuid!\n");
2939 else if (PL_uid) { /* oops, mustn't run as root */
2941 (void)seteuid((Uid_t)PL_uid);
2944 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2946 #ifdef HAS_SETRESUID
2947 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2949 PerlProc_setuid((Uid_t)PL_uid);
2953 if (PerlProc_geteuid() != PL_uid)
2954 Perl_croak(aTHX_ "Can't do seteuid!\n");
2957 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2958 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
2961 else if (PL_preprocess)
2962 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
2963 else if (fdscript >= 0)
2964 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
2966 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
2968 /* We absolutely must clear out any saved ids here, so we */
2969 /* exec the real perl, substituting fd script for scriptname. */
2970 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2971 PerlIO_rewind(PL_rsfp);
2972 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2973 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2974 if (!PL_origargv[which])
2975 Perl_croak(aTHX_ "Permission denied");
2976 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
2977 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
2978 #if defined(HAS_FCNTL) && defined(F_SETFD)
2979 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
2981 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
2982 (int)PERL_REVISION, (int)PERL_VERSION,
2983 (int)PERL_SUBVERSION), PL_origargv);/* try again */
2984 Perl_croak(aTHX_ "Can't do setuid\n");
2985 #endif /* IAMSUID */
2987 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
2988 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
2990 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
2991 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
2993 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
2996 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2997 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2998 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
2999 /* not set-id, must be wrapped */
3005 S_find_beginning(pTHX)
3007 register char *s, *s2;
3009 /* skip forward in input to the real script? */
3012 #ifdef MACOS_TRADITIONAL
3013 /* Since the Mac OS does not honor !# arguments for us, we do it ourselves */
3015 while (PL_doextract || gMacPerl_AlwaysExtract) {
3016 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3017 if (!gMacPerl_AlwaysExtract)
3018 Perl_croak(aTHX_ "No Perl script found in input\n");
3020 if (PL_doextract) /* require explicit override ? */
3021 if (!OverrideExtract(PL_origfilename))
3022 Perl_croak(aTHX_ "User aborted script\n");
3024 PL_doextract = FALSE;
3026 /* Pater peccavi, file does not have #! */
3027 PerlIO_rewind(PL_rsfp);
3032 while (PL_doextract) {
3033 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3034 Perl_croak(aTHX_ "No Perl script found in input\n");
3036 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3037 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3038 PL_doextract = FALSE;
3039 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3041 while (*s == ' ' || *s == '\t') s++;
3043 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3044 if (strnEQ(s2-4,"perl",4))
3046 while ((s = moreswitches(s)))
3057 PL_uid = PerlProc_getuid();
3058 PL_euid = PerlProc_geteuid();
3059 PL_gid = PerlProc_getgid();
3060 PL_egid = PerlProc_getegid();
3062 PL_uid |= PL_gid << 16;
3063 PL_euid |= PL_egid << 16;
3065 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3069 S_forbid_setid(pTHX_ char *s)
3071 if (PL_euid != PL_uid)
3072 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3073 if (PL_egid != PL_gid)
3074 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3078 Perl_init_debugger(pTHX)
3081 HV *ostash = PL_curstash;
3083 PL_curstash = PL_debstash;
3084 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3085 AvREAL_off(PL_dbargs);
3086 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3087 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3088 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3089 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3090 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3091 sv_setiv(PL_DBsingle, 0);
3092 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3093 sv_setiv(PL_DBtrace, 0);
3094 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3095 sv_setiv(PL_DBsignal, 0);
3096 PL_curstash = ostash;
3099 #ifndef STRESS_REALLOC
3100 #define REASONABLE(size) (size)
3102 #define REASONABLE(size) (1) /* unreasonable */
3106 Perl_init_stacks(pTHX)
3108 /* start with 128-item stack and 8K cxstack */
3109 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3110 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3111 PL_curstackinfo->si_type = PERLSI_MAIN;
3112 PL_curstack = PL_curstackinfo->si_stack;
3113 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3115 PL_stack_base = AvARRAY(PL_curstack);
3116 PL_stack_sp = PL_stack_base;
3117 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3119 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3122 PL_tmps_max = REASONABLE(128);
3124 New(54,PL_markstack,REASONABLE(32),I32);
3125 PL_markstack_ptr = PL_markstack;
3126 PL_markstack_max = PL_markstack + REASONABLE(32);
3130 New(54,PL_scopestack,REASONABLE(32),I32);
3131 PL_scopestack_ix = 0;
3132 PL_scopestack_max = REASONABLE(32);
3134 New(54,PL_savestack,REASONABLE(128),ANY);
3135 PL_savestack_ix = 0;
3136 PL_savestack_max = REASONABLE(128);
3138 New(54,PL_retstack,REASONABLE(16),OP*);
3140 PL_retstack_max = REASONABLE(16);
3149 while (PL_curstackinfo->si_next)
3150 PL_curstackinfo = PL_curstackinfo->si_next;
3151 while (PL_curstackinfo) {
3152 PERL_SI *p = PL_curstackinfo->si_prev;
3153 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3154 Safefree(PL_curstackinfo->si_cxstack);
3155 Safefree(PL_curstackinfo);
3156 PL_curstackinfo = p;
3158 Safefree(PL_tmps_stack);
3159 Safefree(PL_markstack);
3160 Safefree(PL_scopestack);
3161 Safefree(PL_savestack);
3162 Safefree(PL_retstack);
3166 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3177 lex_start(PL_linestr);
3179 PL_subname = newSVpvn("main",4);
3183 S_init_predump_symbols(pTHX)
3189 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3190 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3191 GvMULTI_on(PL_stdingv);
3192 io = GvIOp(PL_stdingv);
3193 IoIFP(io) = PerlIO_stdin();
3194 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3196 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3198 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3201 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3203 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3205 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3207 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3208 GvMULTI_on(PL_stderrgv);
3209 io = GvIOp(PL_stderrgv);
3210 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3211 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3213 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3215 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3218 Safefree(PL_osname);
3219 PL_osname = savepv(OSNAME);
3223 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3230 argc--,argv++; /* skip name of script */
3231 if (PL_doswitches) {
3232 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3235 if (argv[0][1] == '-' && !argv[0][2]) {
3239 if ((s = strchr(argv[0], '='))) {
3241 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3244 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3247 PL_toptarget = NEWSV(0,0);
3248 sv_upgrade(PL_toptarget, SVt_PVFM);
3249 sv_setpvn(PL_toptarget, "", 0);
3250 PL_bodytarget = NEWSV(0,0);
3251 sv_upgrade(PL_bodytarget, SVt_PVFM);
3252 sv_setpvn(PL_bodytarget, "", 0);
3253 PL_formtarget = PL_bodytarget;
3256 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3257 #ifdef MACOS_TRADITIONAL
3258 /* $0 is not majick on a Mac */
3259 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3261 sv_setpv(GvSV(tmpgv),PL_origfilename);
3262 magicname("0", "0", 1);
3265 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3267 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3269 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3271 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3272 GvMULTI_on(PL_argvgv);
3273 (void)gv_AVadd(PL_argvgv);
3274 av_clear(GvAVn(PL_argvgv));
3275 for (; argc > 0; argc--,argv++) {
3276 SV *sv = newSVpv(argv[0],0);
3277 av_push(GvAVn(PL_argvgv),sv);
3278 if (PL_widesyscalls)
3279 (void)sv_utf8_decode(sv);
3282 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3284 GvMULTI_on(PL_envgv);
3285 hv = GvHVn(PL_envgv);
3286 hv_magic(hv, PL_envgv, 'E');
3287 #if !defined( VMS) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) /* VMS doesn't have environ array */
3288 /* Note that if the supplied env parameter is actually a copy
3289 of the global environ then it may now point to free'd memory
3290 if the environment has been modified since. To avoid this
3291 problem we treat env==NULL as meaning 'use the default'
3296 environ[0] = Nullch;
3297 for (; *env; env++) {
3298 if (!(s = strchr(*env,'=')))
3304 sv = newSVpv(s--,0);
3305 (void)hv_store(hv, *env, s - *env, sv, 0);
3307 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3308 /* Sins of the RTL. See note in my_setenv(). */
3309 (void)PerlEnv_putenv(savepv(*env));
3313 #ifdef DYNAMIC_ENV_FETCH
3314 HvNAME(hv) = savepv(ENV_HV_NAME);
3318 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3319 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3323 S_init_perllib(pTHX)
3328 s = PerlEnv_getenv("PERL5LIB");
3330 incpush(s, TRUE, TRUE);
3332 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3334 /* Treat PERL5?LIB as a possible search list logical name -- the
3335 * "natural" VMS idiom for a Unix path string. We allow each
3336 * element to be a set of |-separated directories for compatibility.
3340 if (my_trnlnm("PERL5LIB",buf,0))
3341 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3343 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3347 /* Use the ~-expanded versions of APPLLIB (undocumented),
3348 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3351 incpush(APPLLIB_EXP, TRUE, TRUE);
3355 incpush(ARCHLIB_EXP, FALSE, FALSE);
3357 #ifdef MACOS_TRADITIONAL
3359 struct stat tmpstatbuf;
3360 SV * privdir = NEWSV(55, 0);
3361 char * macperl = PerlEnv_getenv("MACPERL");
3366 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3367 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3368 incpush(SvPVX(privdir), TRUE, FALSE);
3369 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3370 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3371 incpush(SvPVX(privdir), TRUE, FALSE);
3373 SvREFCNT_dec(privdir);
3376 incpush(":", FALSE, FALSE);
3379 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3382 incpush(PRIVLIB_EXP, TRUE, FALSE);
3384 incpush(PRIVLIB_EXP, FALSE, FALSE);
3388 /* sitearch is always relative to sitelib on Windows for
3389 * DLL-based path intuition to work correctly */
3390 # if !defined(WIN32)
3391 incpush(SITEARCH_EXP, FALSE, FALSE);
3397 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3399 incpush(SITELIB_EXP, FALSE, FALSE);
3403 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3404 incpush(SITELIB_STEM, FALSE, TRUE);
3407 #ifdef PERL_VENDORARCH_EXP
3408 /* vendorarch is always relative to vendorlib on Windows for
3409 * DLL-based path intuition to work correctly */
3410 # if !defined(WIN32)
3411 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3415 #ifdef PERL_VENDORLIB_EXP
3417 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3419 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3423 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3424 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3427 #ifdef PERL_OTHERLIBDIRS
3428 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3432 incpush(".", FALSE, FALSE);
3433 #endif /* MACOS_TRADITIONAL */
3437 # define PERLLIB_SEP ';'
3440 # define PERLLIB_SEP '|'
3442 # if defined(MACOS_TRADITIONAL)
3443 # define PERLLIB_SEP ','
3445 # define PERLLIB_SEP ':'
3449 #ifndef PERLLIB_MANGLE
3450 # define PERLLIB_MANGLE(s,n) (s)
3454 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3456 SV *subdir = Nullsv;
3461 if (addsubdirs || addoldvers) {
3462 subdir = sv_newmortal();
3465 /* Break at all separators */
3467 SV *libdir = NEWSV(55,0);
3470 /* skip any consecutive separators */
3471 while ( *p == PERLLIB_SEP ) {
3472 /* Uncomment the next line for PATH semantics */
3473 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3477 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3478 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3483 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3484 p = Nullch; /* break out */
3486 #ifdef MACOS_TRADITIONAL
3487 if (!strchr(SvPVX(libdir), ':'))
3488 sv_insert(libdir, 0, 0, ":", 1);
3489 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3490 sv_catpv(libdir, ":");
3494 * BEFORE pushing libdir onto @INC we may first push version- and
3495 * archname-specific sub-directories.
3497 if (addsubdirs || addoldvers) {
3498 #ifdef PERL_INC_VERSION_LIST
3499 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3500 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3501 const char **incver;
3503 struct stat tmpstatbuf;
3508 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3510 while (unix[len-1] == '/') len--; /* Cosmetic */
3511 sv_usepvn(libdir,unix,len);
3514 PerlIO_printf(Perl_error_log,
3515 "Failed to unixify @INC element \"%s\"\n",
3519 #ifdef MACOS_TRADITIONAL
3520 #define PERL_AV_SUFFIX_FMT ""
3521 #define PERL_ARCH_FMT ":%s"
3523 #define PERL_AV_SUFFIX_FMT "/"
3524 #define PERL_ARCH_FMT "/%s"
3526 /* .../version/archname if -d .../version/archname */
3527 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT PERL_ARCH_FMT,
3529 (int)PERL_REVISION, (int)PERL_VERSION,
3530 (int)PERL_SUBVERSION, ARCHNAME);
3531 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3532 S_ISDIR(tmpstatbuf.st_mode))
3533 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3535 /* .../version if -d .../version */
3536 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT, libdir,
3537 (int)PERL_REVISION, (int)PERL_VERSION,
3538 (int)PERL_SUBVERSION);
3539 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3540 S_ISDIR(tmpstatbuf.st_mode))
3541 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3543 /* .../archname if -d .../archname */
3544 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3545 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3546 S_ISDIR(tmpstatbuf.st_mode))
3547 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3550 #ifdef PERL_INC_VERSION_LIST
3552 for (incver = incverlist; *incver; incver++) {
3553 /* .../xxx if -d .../xxx */
3554 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3555 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3556 S_ISDIR(tmpstatbuf.st_mode))
3557 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3563 /* finally push this lib directory on the end of @INC */
3564 av_push(GvAVn(PL_incgv), libdir);
3569 STATIC struct perl_thread *
3570 S_init_main_thread(pTHX)
3572 #if !defined(PERL_IMPLICIT_CONTEXT)
3573 struct perl_thread *thr;
3577 Newz(53, thr, 1, struct perl_thread);
3578 PL_curcop = &PL_compiling;
3579 thr->interp = PERL_GET_INTERP;
3580 thr->cvcache = newHV();
3581 thr->threadsv = newAV();
3582 /* thr->threadsvp is set when find_threadsv is called */
3583 thr->specific = newAV();
3584 thr->flags = THRf_R_JOINABLE;
3585 MUTEX_INIT(&thr->mutex);
3586 /* Handcraft thrsv similarly to mess_sv */
3587 New(53, PL_thrsv, 1, SV);
3588 Newz(53, xpv, 1, XPV);
3589 SvFLAGS(PL_thrsv) = SVt_PV;
3590 SvANY(PL_thrsv) = (void*)xpv;
3591 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3592 SvPVX(PL_thrsv) = (char*)thr;
3593 SvCUR_set(PL_thrsv, sizeof(thr));
3594 SvLEN_set(PL_thrsv, sizeof(thr));
3595 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3596 thr->oursv = PL_thrsv;
3597 PL_chopset = " \n-";
3600 MUTEX_LOCK(&PL_threads_mutex);
3605 MUTEX_UNLOCK(&PL_threads_mutex);
3607 #ifdef HAVE_THREAD_INTERN
3608 Perl_init_thread_intern(thr);
3611 #ifdef SET_THREAD_SELF
3612 SET_THREAD_SELF(thr);
3614 thr->self = pthread_self();
3615 #endif /* SET_THREAD_SELF */
3619 * These must come after the SET_THR because sv_setpvn does
3620 * SvTAINT and the taint fields require dTHR.
3622 PL_toptarget = NEWSV(0,0);
3623 sv_upgrade(PL_toptarget, SVt_PVFM);
3624 sv_setpvn(PL_toptarget, "", 0);
3625 PL_bodytarget = NEWSV(0,0);
3626 sv_upgrade(PL_bodytarget, SVt_PVFM);
3627 sv_setpvn(PL_bodytarget, "", 0);
3628 PL_formtarget = PL_bodytarget;
3629 thr->errsv = newSVpvn("", 0);
3630 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3633 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3634 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3635 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3636 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3637 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3639 PL_reginterp_cnt = 0;
3643 #endif /* USE_THREADS */
3646 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3650 line_t oldline = CopLINE(PL_curcop);
3656 while (AvFILL(paramList) >= 0) {
3657 cv = (CV*)av_shift(paramList);
3659 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3660 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3666 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3670 (void)SvPV(atsv, len);
3673 PL_curcop = &PL_compiling;
3674 CopLINE_set(PL_curcop, oldline);
3675 if (paramList == PL_beginav)
3676 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3678 Perl_sv_catpvf(aTHX_ atsv,
3679 "%s failed--call queue aborted",
3680 paramList == PL_checkav ? "CHECK"
3681 : paramList == PL_initav ? "INIT"
3683 while (PL_scopestack_ix > oldscope)
3686 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3693 /* my_exit() was called */
3694 while (PL_scopestack_ix > oldscope)
3697 PL_curstash = PL_defstash;
3698 PL_curcop = &PL_compiling;
3699 CopLINE_set(PL_curcop, oldline);
3701 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3702 if (paramList == PL_beginav)
3703 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3705 Perl_croak(aTHX_ "%s failed--call queue aborted",
3706 paramList == PL_checkav ? "CHECK"
3707 : paramList == PL_initav ? "INIT"
3714 PL_curcop = &PL_compiling;
3715 CopLINE_set(PL_curcop, oldline);
3718 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3726 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3728 S_vcall_list_body(pTHX_ va_list args)
3730 CV *cv = va_arg(args, CV*);
3731 return call_list_body(cv);
3736 S_call_list_body(pTHX_ CV *cv)
3738 PUSHMARK(PL_stack_sp);
3739 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3744 Perl_my_exit(pTHX_ U32 status)
3748 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3749 thr, (unsigned long) status));
3758 STATUS_NATIVE_SET(status);
3765 Perl_my_failure_exit(pTHX)
3768 if (vaxc$errno & 1) {
3769 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3770 STATUS_NATIVE_SET(44);
3773 if (!vaxc$errno && errno) /* unlikely */
3774 STATUS_NATIVE_SET(44);
3776 STATUS_NATIVE_SET(vaxc$errno);
3781 STATUS_POSIX_SET(errno);
3783 exitstatus = STATUS_POSIX >> 8;
3784 if (exitstatus & 255)
3785 STATUS_POSIX_SET(exitstatus);
3787 STATUS_POSIX_SET(255);
3794 S_my_exit_jump(pTHX)
3797 register PERL_CONTEXT *cx;
3802 SvREFCNT_dec(PL_e_script);
3803 PL_e_script = Nullsv;
3806 POPSTACK_TO(PL_mainstack);
3807 if (cxstack_ix >= 0) {
3810 POPBLOCK(cx,PL_curpm);
3822 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3825 p = SvPVX(PL_e_script);
3826 nl = strchr(p, '\n');
3827 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3829 filter_del(read_e_script);
3832 sv_catpvn(buf_sv, p, nl-p);
3833 sv_chop(PL_e_script, nl);