3 * Copyright (c) 1987-2001 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)
62 static void S_atfork_lock(void);
63 static void S_atfork_unlock(void);
65 /* this is called in parent before the fork() */
69 /* locks must be held in locking order (if any) */
71 MUTEX_LOCK(&PL_malloc_mutex);
76 /* this is called in both parent and child after the fork() */
80 /* locks must be released in same order as in S_atfork_lock() */
82 MUTEX_UNLOCK(&PL_malloc_mutex);
87 # define INIT_TLS_AND_INTERP \
89 if (!PL_curinterp) { \
90 PERL_SET_INTERP(my_perl); \
93 PERL_SET_THX(my_perl); \
95 PTHREAD_ATFORK(S_atfork_lock, \
100 PERL_SET_THX(my_perl); \
104 # define INIT_TLS_AND_INTERP \
106 if (!PL_curinterp) { \
107 PERL_SET_INTERP(my_perl); \
109 PERL_SET_THX(my_perl); \
114 #ifdef PERL_IMPLICIT_SYS
116 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
117 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
118 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
119 struct IPerlDir* ipD, struct IPerlSock* ipS,
120 struct IPerlProc* ipP)
122 PerlInterpreter *my_perl;
124 my_perl = (PerlInterpreter*)new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd,
125 ipLIO, ipD, ipS, ipP);
128 /* New() needs interpreter, so call malloc() instead */
129 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
131 Zero(my_perl, 1, PerlInterpreter);
148 =for apidoc perl_alloc
150 Allocates a new Perl interpreter. See L<perlembed>.
158 PerlInterpreter *my_perl;
160 /* New() needs interpreter, so call malloc() instead */
161 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
164 Zero(my_perl, 1, PerlInterpreter);
167 #endif /* PERL_IMPLICIT_SYS */
170 =for apidoc perl_construct
172 Initializes a new Perl interpreter. See L<perlembed>.
178 perl_construct(pTHXx)
182 struct perl_thread *thr = NULL;
183 #endif /* FAKE_THREADS */
184 #endif /* USE_THREADS */
188 PL_perl_destruct_level = 1;
190 if (PL_perl_destruct_level > 0)
194 /* Init the real globals (and main thread)? */
197 MUTEX_INIT(&PL_sv_mutex);
199 * Safe to use basic SV functions from now on (though
200 * not things like mortals or tainting yet).
202 MUTEX_INIT(&PL_eval_mutex);
203 COND_INIT(&PL_eval_cond);
204 MUTEX_INIT(&PL_threads_mutex);
205 COND_INIT(&PL_nthreads_cond);
206 # ifdef EMULATE_ATOMIC_REFCOUNTS
207 MUTEX_INIT(&PL_svref_mutex);
208 # endif /* EMULATE_ATOMIC_REFCOUNTS */
210 MUTEX_INIT(&PL_cred_mutex);
211 MUTEX_INIT(&PL_sv_lock_mutex);
212 MUTEX_INIT(&PL_fdpid_mutex);
214 thr = init_main_thread();
215 #endif /* USE_THREADS */
217 #ifdef PERL_FLEXIBLE_EXCEPTIONS
218 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
221 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
223 PL_linestr = NEWSV(65,79);
224 sv_upgrade(PL_linestr,SVt_PVIV);
226 if (!SvREADONLY(&PL_sv_undef)) {
227 /* set read-only and try to insure than we wont see REFCNT==0
230 SvREADONLY_on(&PL_sv_undef);
231 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
233 sv_setpv(&PL_sv_no,PL_No);
235 SvREADONLY_on(&PL_sv_no);
236 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
238 sv_setpv(&PL_sv_yes,PL_Yes);
240 SvREADONLY_on(&PL_sv_yes);
241 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
246 /* PL_sighandlerp = sighandler; */
248 PL_sighandlerp = Perl_sighandler;
250 PL_pidstatus = newHV();
254 * There is no way we can refer to them from Perl so close them to save
255 * space. The other alternative would be to provide STDAUX and STDPRN
258 (void)PerlIO_close(PerlIO_importFILE(stdaux, 0));
259 (void)PerlIO_close(PerlIO_importFILE(stdprn, 0));
263 PL_nrs = newSVpvn("\n", 1);
264 PL_rs = SvREFCNT_inc(PL_nrs);
269 PL_lex_state = LEX_NOTPARSING;
275 SET_NUMERIC_STANDARD();
279 PL_patchlevel = NEWSV(0,4);
280 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
281 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
282 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
283 s = (U8*)SvPVX(PL_patchlevel);
284 /* Build version strings using "native" characters */
285 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
286 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
287 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
289 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
290 SvPOK_on(PL_patchlevel);
291 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
292 + ((NV)PERL_VERSION / (NV)1000)
293 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
294 + ((NV)PERL_SUBVERSION / (NV)1000000)
297 SvNOK_on(PL_patchlevel); /* dual valued */
298 SvUTF8_on(PL_patchlevel);
299 SvREADONLY_on(PL_patchlevel);
302 #if defined(LOCAL_PATCH_COUNT)
303 PL_localpatches = local_patches; /* For possible -v */
306 #ifdef HAVE_INTERP_INTERN
310 PerlIO_init(); /* Hook to IO system */
312 PL_fdpid = newAV(); /* for remembering popen pids by fd */
313 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
314 PL_errors = newSVpvn("",0);
320 =for apidoc perl_destruct
322 Shuts down a Perl interpreter. See L<perlembed>.
330 int destruct_level; /* 0=none, 1=full, 2=full with checks */
335 #endif /* USE_THREADS */
337 /* wait for all pseudo-forked children to finish */
338 PERL_WAIT_FOR_CHILDREN;
342 /* Pass 1 on any remaining threads: detach joinables, join zombies */
344 MUTEX_LOCK(&PL_threads_mutex);
345 DEBUG_S(PerlIO_printf(Perl_debug_log,
346 "perl_destruct: waiting for %d threads...\n",
348 for (t = thr->next; t != thr; t = t->next) {
349 MUTEX_LOCK(&t->mutex);
350 switch (ThrSTATE(t)) {
353 DEBUG_S(PerlIO_printf(Perl_debug_log,
354 "perl_destruct: joining zombie %p\n", t));
355 ThrSETSTATE(t, THRf_DEAD);
356 MUTEX_UNLOCK(&t->mutex);
359 * The SvREFCNT_dec below may take a long time (e.g. av
360 * may contain an object scalar whose destructor gets
361 * called) so we have to unlock threads_mutex and start
364 MUTEX_UNLOCK(&PL_threads_mutex);
366 SvREFCNT_dec((SV*)av);
367 DEBUG_S(PerlIO_printf(Perl_debug_log,
368 "perl_destruct: joined zombie %p OK\n", t));
370 case THRf_R_JOINABLE:
371 DEBUG_S(PerlIO_printf(Perl_debug_log,
372 "perl_destruct: detaching thread %p\n", t));
373 ThrSETSTATE(t, THRf_R_DETACHED);
375 * We unlock threads_mutex and t->mutex in the opposite order
376 * from which we locked them just so that DETACH won't
377 * deadlock if it panics. It's only a breach of good style
378 * not a bug since they are unlocks not locks.
380 MUTEX_UNLOCK(&PL_threads_mutex);
382 MUTEX_UNLOCK(&t->mutex);
385 DEBUG_S(PerlIO_printf(Perl_debug_log,
386 "perl_destruct: ignoring %p (state %u)\n",
388 MUTEX_UNLOCK(&t->mutex);
389 /* fall through and out */
392 /* We leave the above "Pass 1" loop with threads_mutex still locked */
394 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
395 while (PL_nthreads > 1)
397 DEBUG_S(PerlIO_printf(Perl_debug_log,
398 "perl_destruct: final wait for %d threads\n",
400 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
402 /* At this point, we're the last thread */
403 MUTEX_UNLOCK(&PL_threads_mutex);
404 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
405 MUTEX_DESTROY(&PL_threads_mutex);
406 COND_DESTROY(&PL_nthreads_cond);
408 #endif /* !defined(FAKE_THREADS) */
409 #endif /* USE_THREADS */
411 destruct_level = PL_perl_destruct_level;
415 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
417 if (destruct_level < i)
427 /* We must account for everything. */
429 /* Destroy the main CV and syntax tree */
431 PL_curpad = AvARRAY(PL_comppad);
432 op_free(PL_main_root);
433 PL_main_root = Nullop;
435 PL_curcop = &PL_compiling;
436 PL_main_start = Nullop;
437 SvREFCNT_dec(PL_main_cv);
441 /* Tell PerlIO we are about to tear things apart in case
442 we have layers which are using resources that should
446 PerlIO_destruct(aTHX);
448 if (PL_sv_objcount) {
450 * Try to destruct global references. We do this first so that the
451 * destructors and destructees still exist. Some sv's might remain.
452 * Non-referenced objects are on their own.
457 /* unhook hooks which will soon be, or use, destroyed data */
458 SvREFCNT_dec(PL_warnhook);
459 PL_warnhook = Nullsv;
460 SvREFCNT_dec(PL_diehook);
463 /* call exit list functions */
464 while (PL_exitlistlen-- > 0)
465 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
467 Safefree(PL_exitlist);
469 if (destruct_level == 0){
471 DEBUG_P(debprofdump());
473 /* The exit() function will do everything that needs doing. */
477 /* jettison our possibly duplicated environment */
479 #ifdef USE_ENVIRON_ARRAY
480 if (environ != PL_origenviron) {
483 for (i = 0; environ[i]; i++)
484 safesysfree(environ[i]);
485 /* Must use safesysfree() when working with environ. */
486 safesysfree(environ);
488 environ = PL_origenviron;
492 /* loosen bonds of global variables */
495 (void)PerlIO_close(PL_rsfp);
499 /* Filters for program text */
500 SvREFCNT_dec(PL_rsfp_filters);
501 PL_rsfp_filters = Nullav;
504 PL_preprocess = FALSE;
510 PL_doswitches = FALSE;
511 PL_dowarn = G_WARN_OFF;
512 PL_doextract = FALSE;
513 PL_sawampersand = FALSE; /* must save all match strings */
516 Safefree(PL_inplace);
518 SvREFCNT_dec(PL_patchlevel);
521 SvREFCNT_dec(PL_e_script);
522 PL_e_script = Nullsv;
525 /* magical thingies */
527 SvREFCNT_dec(PL_ofs_sv); /* $, */
530 SvREFCNT_dec(PL_ors_sv); /* $\ */
533 SvREFCNT_dec(PL_rs); /* $/ */
536 SvREFCNT_dec(PL_nrs); /* $/ helper */
539 PL_multiline = 0; /* $* */
540 Safefree(PL_osname); /* $^O */
543 SvREFCNT_dec(PL_statname);
544 PL_statname = Nullsv;
547 /* defgv, aka *_ should be taken care of elsewhere */
549 /* clean up after study() */
550 SvREFCNT_dec(PL_lastscream);
551 PL_lastscream = Nullsv;
552 Safefree(PL_screamfirst);
554 Safefree(PL_screamnext);
558 Safefree(PL_efloatbuf);
559 PL_efloatbuf = Nullch;
562 /* startup and shutdown function lists */
563 SvREFCNT_dec(PL_beginav);
564 SvREFCNT_dec(PL_endav);
565 SvREFCNT_dec(PL_checkav);
566 SvREFCNT_dec(PL_initav);
572 /* shortcuts just get cleared */
578 PL_argvoutgv = Nullgv;
580 PL_stderrgv = Nullgv;
581 PL_last_in_gv = Nullgv;
583 PL_debstash = Nullhv;
585 /* reset so print() ends up where we expect */
588 SvREFCNT_dec(PL_argvout_stack);
589 PL_argvout_stack = Nullav;
591 SvREFCNT_dec(PL_modglobal);
592 PL_modglobal = Nullhv;
593 SvREFCNT_dec(PL_preambleav);
594 PL_preambleav = Nullav;
595 SvREFCNT_dec(PL_subname);
597 SvREFCNT_dec(PL_linestr);
599 SvREFCNT_dec(PL_pidstatus);
600 PL_pidstatus = Nullhv;
601 SvREFCNT_dec(PL_toptarget);
602 PL_toptarget = Nullsv;
603 SvREFCNT_dec(PL_bodytarget);
604 PL_bodytarget = Nullsv;
605 PL_formtarget = Nullsv;
607 /* free locale stuff */
608 #ifdef USE_LOCALE_COLLATE
609 Safefree(PL_collation_name);
610 PL_collation_name = Nullch;
613 #ifdef USE_LOCALE_NUMERIC
614 Safefree(PL_numeric_name);
615 PL_numeric_name = Nullch;
616 SvREFCNT_dec(PL_numeric_radix_sv);
619 /* clear utf8 character classes */
620 SvREFCNT_dec(PL_utf8_alnum);
621 SvREFCNT_dec(PL_utf8_alnumc);
622 SvREFCNT_dec(PL_utf8_ascii);
623 SvREFCNT_dec(PL_utf8_alpha);
624 SvREFCNT_dec(PL_utf8_space);
625 SvREFCNT_dec(PL_utf8_cntrl);
626 SvREFCNT_dec(PL_utf8_graph);
627 SvREFCNT_dec(PL_utf8_digit);
628 SvREFCNT_dec(PL_utf8_upper);
629 SvREFCNT_dec(PL_utf8_lower);
630 SvREFCNT_dec(PL_utf8_print);
631 SvREFCNT_dec(PL_utf8_punct);
632 SvREFCNT_dec(PL_utf8_xdigit);
633 SvREFCNT_dec(PL_utf8_mark);
634 SvREFCNT_dec(PL_utf8_toupper);
635 SvREFCNT_dec(PL_utf8_tolower);
636 PL_utf8_alnum = Nullsv;
637 PL_utf8_alnumc = Nullsv;
638 PL_utf8_ascii = Nullsv;
639 PL_utf8_alpha = Nullsv;
640 PL_utf8_space = Nullsv;
641 PL_utf8_cntrl = Nullsv;
642 PL_utf8_graph = Nullsv;
643 PL_utf8_digit = Nullsv;
644 PL_utf8_upper = Nullsv;
645 PL_utf8_lower = Nullsv;
646 PL_utf8_print = Nullsv;
647 PL_utf8_punct = Nullsv;
648 PL_utf8_xdigit = Nullsv;
649 PL_utf8_mark = Nullsv;
650 PL_utf8_toupper = Nullsv;
651 PL_utf8_totitle = Nullsv;
652 PL_utf8_tolower = Nullsv;
654 if (!specialWARN(PL_compiling.cop_warnings))
655 SvREFCNT_dec(PL_compiling.cop_warnings);
656 PL_compiling.cop_warnings = Nullsv;
657 if (!specialCopIO(PL_compiling.cop_io))
658 SvREFCNT_dec(PL_compiling.cop_io);
659 PL_compiling.cop_io = Nullsv;
661 Safefree(CopFILE(&PL_compiling));
662 CopFILE(&PL_compiling) = Nullch;
663 Safefree(CopSTASHPV(&PL_compiling));
665 SvREFCNT_dec(CopFILEGV(&PL_compiling));
666 CopFILEGV(&PL_compiling) = Nullgv;
667 /* cop_stash is not refcounted */
670 /* Prepare to destruct main symbol table. */
675 SvREFCNT_dec(PL_curstname);
676 PL_curstname = Nullsv;
678 /* clear queued errors */
679 SvREFCNT_dec(PL_errors);
683 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
684 if (PL_scopestack_ix != 0)
685 Perl_warner(aTHX_ WARN_INTERNAL,
686 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
687 (long)PL_scopestack_ix);
688 if (PL_savestack_ix != 0)
689 Perl_warner(aTHX_ WARN_INTERNAL,
690 "Unbalanced saves: %ld more saves than restores\n",
691 (long)PL_savestack_ix);
692 if (PL_tmps_floor != -1)
693 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
694 (long)PL_tmps_floor + 1);
695 if (cxstack_ix != -1)
696 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
697 (long)cxstack_ix + 1);
700 /* Now absolutely destruct everything, somehow or other, loops or no. */
701 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
702 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
704 /* the 2 is for PL_fdpid and PL_strtab */
705 while (PL_sv_count > 2 && sv_clean_all())
708 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
709 SvFLAGS(PL_fdpid) |= SVt_PVAV;
710 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
711 SvFLAGS(PL_strtab) |= SVt_PVHV;
713 AvREAL_off(PL_fdpid); /* no surviving entries */
714 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
717 #ifdef HAVE_INTERP_INTERN
721 /* Destruct the global string table. */
723 /* Yell and reset the HeVAL() slots that are still holding refcounts,
724 * so that sv_free() won't fail on them.
732 max = HvMAX(PL_strtab);
733 array = HvARRAY(PL_strtab);
736 if (hent && ckWARN_d(WARN_INTERNAL)) {
737 Perl_warner(aTHX_ WARN_INTERNAL,
738 "Unbalanced string table refcount: (%d) for \"%s\"",
739 HeVAL(hent) - Nullsv, HeKEY(hent));
740 HeVAL(hent) = Nullsv;
750 SvREFCNT_dec(PL_strtab);
753 /* free the pointer table used for cloning */
754 ptr_table_free(PL_ptr_table);
757 /* free special SVs */
759 SvREFCNT(&PL_sv_yes) = 0;
760 sv_clear(&PL_sv_yes);
761 SvANY(&PL_sv_yes) = NULL;
762 SvFLAGS(&PL_sv_yes) = 0;
764 SvREFCNT(&PL_sv_no) = 0;
766 SvANY(&PL_sv_no) = NULL;
767 SvFLAGS(&PL_sv_no) = 0;
769 SvREFCNT(&PL_sv_undef) = 0;
770 SvREADONLY_off(&PL_sv_undef);
772 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
773 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
775 Safefree(PL_origfilename);
776 Safefree(PL_reg_start_tmp);
778 Safefree(PL_reg_curpm);
779 Safefree(PL_reg_poscache);
780 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
781 Safefree(PL_op_mask);
782 Safefree(PL_psig_ptr);
783 Safefree(PL_psig_name);
784 Safefree(PL_bitcount);
785 Safefree(PL_psig_pend);
787 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
789 DEBUG_P(debprofdump());
791 MUTEX_DESTROY(&PL_strtab_mutex);
792 MUTEX_DESTROY(&PL_sv_mutex);
793 MUTEX_DESTROY(&PL_eval_mutex);
794 MUTEX_DESTROY(&PL_cred_mutex);
795 MUTEX_DESTROY(&PL_fdpid_mutex);
796 COND_DESTROY(&PL_eval_cond);
797 #ifdef EMULATE_ATOMIC_REFCOUNTS
798 MUTEX_DESTROY(&PL_svref_mutex);
799 #endif /* EMULATE_ATOMIC_REFCOUNTS */
801 /* As the penultimate thing, free the non-arena SV for thrsv */
802 Safefree(SvPVX(PL_thrsv));
803 Safefree(SvANY(PL_thrsv));
806 #endif /* USE_THREADS */
810 /* As the absolutely last thing, free the non-arena SV for mess() */
813 /* it could have accumulated taint magic */
814 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
817 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
818 moremagic = mg->mg_moremagic;
819 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
821 Safefree(mg->mg_ptr);
825 /* we know that type >= SVt_PV */
826 (void)SvOOK_off(PL_mess_sv);
827 Safefree(SvPVX(PL_mess_sv));
828 Safefree(SvANY(PL_mess_sv));
829 Safefree(PL_mess_sv);
835 =for apidoc perl_free
837 Releases a Perl interpreter. See L<perlembed>.
845 #if defined(PERL_OBJECT)
848 # if defined(WIN32) || defined(NETWARE)
849 # if defined(PERL_IMPLICIT_SYS)
851 void *host = nw_internal_host;
853 void *host = w32_internal_host;
856 if (PerlProc_lasthost()) {
862 nw5_delete_internal_host(host);
864 win32_delete_internal_host(host);
877 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
879 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
880 PL_exitlist[PL_exitlistlen].fn = fn;
881 PL_exitlist[PL_exitlistlen].ptr = ptr;
886 =for apidoc perl_parse
888 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
894 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
903 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
906 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
907 setuid perl scripts securely.\n");
911 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
912 _dyld_lookup_and_bind
913 ("__environ", (unsigned long *) &environ_pointer, NULL);
918 #ifdef USE_ENVIRON_ARRAY
919 PL_origenviron = environ;
924 /* Come here if running an undumped a.out. */
926 PL_origfilename = savepv(argv[0]);
927 PL_do_undump = FALSE;
928 cxstack_ix = -1; /* start label stack again */
930 init_postdump_symbols(argc,argv,env);
935 PL_curpad = AvARRAY(PL_comppad);
936 op_free(PL_main_root);
937 PL_main_root = Nullop;
939 PL_main_start = Nullop;
940 SvREFCNT_dec(PL_main_cv);
944 oldscope = PL_scopestack_ix;
945 PL_dowarn = G_WARN_OFF;
947 #ifdef PERL_FLEXIBLE_EXCEPTIONS
948 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
954 #ifndef PERL_FLEXIBLE_EXCEPTIONS
955 parse_body(env,xsinit);
958 call_list(oldscope, PL_checkav);
965 /* my_exit() was called */
966 while (PL_scopestack_ix > oldscope)
969 PL_curstash = PL_defstash;
971 call_list(oldscope, PL_checkav);
972 ret = STATUS_NATIVE_EXPORT;
975 PerlIO_printf(Perl_error_log, "panic: top_env\n");
983 #ifdef PERL_FLEXIBLE_EXCEPTIONS
985 S_vparse_body(pTHX_ va_list args)
987 char **env = va_arg(args, char**);
988 XSINIT_t xsinit = va_arg(args, XSINIT_t);
990 return parse_body(env, xsinit);
995 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
997 int argc = PL_origargc;
998 char **argv = PL_origargv;
999 char *scriptname = NULL;
1001 VOL bool dosearch = FALSE;
1002 char *validarg = "";
1006 char *popts, *cddir = Nullch;
1008 sv_setpvn(PL_linestr,"",0);
1009 sv = newSVpvn("",0); /* first used for -I flags */
1013 for (argc--,argv++; argc > 0; argc--,argv++) {
1014 if (argv[0][0] != '-' || !argv[0][1])
1018 validarg = " PHOOEY ";
1027 win32_argv2utf8(argc-1, argv+1);
1030 #ifndef PERL_STRICT_CR
1054 if ((s = moreswitches(s)))
1064 #ifdef MACOS_TRADITIONAL
1065 /* ignore -e for Dev:Pseudo argument */
1066 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1069 if (PL_euid != PL_uid || PL_egid != PL_gid)
1070 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1072 PL_e_script = newSVpvn("",0);
1073 filter_add(read_e_script, NULL);
1076 sv_catpv(PL_e_script, s);
1078 sv_catpv(PL_e_script, argv[1]);
1082 Perl_croak(aTHX_ "No code specified for -e");
1083 sv_catpv(PL_e_script, "\n");
1086 case 'I': /* -I handled both here and in moreswitches() */
1088 if (!*++s && (s=argv[1]) != Nullch) {
1093 STRLEN len = strlen(s);
1094 p = savepvn(s, len);
1095 incpush(p, TRUE, TRUE);
1096 sv_catpvn(sv, "-I", 2);
1097 sv_catpvn(sv, p, len);
1098 sv_catpvn(sv, " ", 1);
1102 Perl_croak(aTHX_ "No directory specified for -I");
1106 PL_preprocess = TRUE;
1116 PL_preambleav = newAV();
1117 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1119 PL_Sv = newSVpv("print myconfig();",0);
1121 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1123 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1125 sv_catpv(PL_Sv,"\" Compile-time options:");
1127 sv_catpv(PL_Sv," DEBUGGING");
1129 # ifdef MULTIPLICITY
1130 sv_catpv(PL_Sv," MULTIPLICITY");
1133 sv_catpv(PL_Sv," USE_THREADS");
1135 # ifdef USE_ITHREADS
1136 sv_catpv(PL_Sv," USE_ITHREADS");
1138 # ifdef USE_64_BIT_INT
1139 sv_catpv(PL_Sv," USE_64_BIT_INT");
1141 # ifdef USE_64_BIT_ALL
1142 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1144 # ifdef USE_LONG_DOUBLE
1145 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1147 # ifdef USE_LARGE_FILES
1148 sv_catpv(PL_Sv," USE_LARGE_FILES");
1151 sv_catpv(PL_Sv," USE_SOCKS");
1154 sv_catpv(PL_Sv," PERL_OBJECT");
1156 # ifdef PERL_IMPLICIT_CONTEXT
1157 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1159 # ifdef PERL_IMPLICIT_SYS
1160 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1162 sv_catpv(PL_Sv,"\\n\",");
1164 #if defined(LOCAL_PATCH_COUNT)
1165 if (LOCAL_PATCH_COUNT > 0) {
1167 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1168 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1169 if (PL_localpatches[i])
1170 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1174 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1177 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1179 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1182 sv_catpv(PL_Sv, "; \
1184 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1187 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1190 print \" \\%ENV:\\n @env\\n\" if @env; \
1191 print \" \\@INC:\\n @INC\\n\";");
1194 PL_Sv = newSVpv("config_vars(qw(",0);
1195 sv_catpv(PL_Sv, ++s);
1196 sv_catpv(PL_Sv, "))");
1199 av_push(PL_preambleav, PL_Sv);
1200 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1203 PL_doextract = TRUE;
1211 if (!*++s || isSPACE(*s)) {
1215 /* catch use of gnu style long options */
1216 if (strEQ(s, "version")) {
1220 if (strEQ(s, "help")) {
1227 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1233 #ifndef SECURE_INTERNAL_GETENV
1236 (popts = PerlEnv_getenv("PERL5OPT")))
1241 if (*s == '-' && *(s+1) == 'T')
1256 if (!strchr("DIMUdmw", *s))
1257 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1270 scriptname = argv[0];
1273 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1275 else if (scriptname == Nullch) {
1277 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1285 open_script(scriptname,dosearch,sv,&fdscript);
1287 validate_suid(validarg, scriptname,fdscript);
1290 #if defined(SIGCHLD) || defined(SIGCLD)
1293 # define SIGCHLD SIGCLD
1295 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1296 if (sigstate == SIG_IGN) {
1297 if (ckWARN(WARN_SIGNAL))
1298 Perl_warner(aTHX_ WARN_SIGNAL,
1299 "Can't ignore signal CHLD, forcing to default");
1300 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1306 #ifdef MACOS_TRADITIONAL
1307 if (PL_doextract || gMacPerl_AlwaysExtract) {
1312 if (cddir && PerlDir_chdir(cddir) < 0)
1313 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1317 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1318 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1319 CvUNIQUE_on(PL_compcv);
1321 PL_comppad = newAV();
1322 av_push(PL_comppad, Nullsv);
1323 PL_curpad = AvARRAY(PL_comppad);
1324 PL_comppad_name = newAV();
1325 PL_comppad_name_fill = 0;
1326 PL_min_intro_pending = 0;
1329 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1330 PL_curpad[0] = (SV*)newAV();
1331 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1332 CvOWNER(PL_compcv) = 0;
1333 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1334 MUTEX_INIT(CvMUTEXP(PL_compcv));
1335 #endif /* USE_THREADS */
1337 comppadlist = newAV();
1338 AvREAL_off(comppadlist);
1339 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1340 av_store(comppadlist, 1, (SV*)PL_comppad);
1341 CvPADLIST(PL_compcv) = comppadlist;
1344 boot_core_UNIVERSAL();
1346 boot_core_xsutils();
1350 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1352 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1358 # ifdef HAS_SOCKS5_INIT
1359 socks5_init(argv[0]);
1365 init_predump_symbols();
1366 /* init_postdump_symbols not currently designed to be called */
1367 /* more than once (ENV isn't cleared first, for example) */
1368 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1370 init_postdump_symbols(argc,argv,env);
1374 /* now parse the script */
1376 SETERRNO(0,SS$_NORMAL);
1378 #ifdef MACOS_TRADITIONAL
1379 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1381 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1383 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1384 MacPerl_MPWFileName(PL_origfilename));
1388 if (yyparse() || PL_error_count) {
1390 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1392 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1397 CopLINE_set(PL_curcop, 0);
1398 PL_curstash = PL_defstash;
1399 PL_preprocess = FALSE;
1401 SvREFCNT_dec(PL_e_script);
1402 PL_e_script = Nullsv;
1405 /* now that script is parsed, we can modify record separator */
1406 SvREFCNT_dec(PL_rs);
1407 PL_rs = SvREFCNT_inc(PL_nrs);
1408 sv_setsv(get_sv("/", TRUE), PL_rs);
1413 SAVECOPFILE(PL_curcop);
1414 SAVECOPLINE(PL_curcop);
1415 gv_check(PL_defstash);
1422 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1423 dump_mstats("after compilation:");
1432 =for apidoc perl_run
1434 Tells a Perl interpreter to run. See L<perlembed>.
1449 oldscope = PL_scopestack_ix;
1451 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1453 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1459 cxstack_ix = -1; /* start context stack again */
1461 case 0: /* normal completion */
1462 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1467 case 2: /* my_exit() */
1468 while (PL_scopestack_ix > oldscope)
1471 PL_curstash = PL_defstash;
1472 if (PL_endav && !PL_minus_c)
1473 call_list(oldscope, PL_endav);
1475 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1476 dump_mstats("after execution: ");
1478 ret = STATUS_NATIVE_EXPORT;
1482 POPSTACK_TO(PL_mainstack);
1485 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1495 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1497 S_vrun_body(pTHX_ va_list args)
1499 I32 oldscope = va_arg(args, I32);
1501 return run_body(oldscope);
1507 S_run_body(pTHX_ I32 oldscope)
1509 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1510 PL_sawampersand ? "Enabling" : "Omitting"));
1512 if (!PL_restartop) {
1513 DEBUG_x(dump_all());
1514 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1515 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1519 #ifdef MACOS_TRADITIONAL
1520 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1522 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1526 if (PERLDB_SINGLE && PL_DBsingle)
1527 sv_setiv(PL_DBsingle, 1);
1529 call_list(oldscope, PL_initav);
1535 PL_op = PL_restartop;
1539 else if (PL_main_start) {
1540 CvDEPTH(PL_main_cv) = 1;
1541 PL_op = PL_main_start;
1551 =for apidoc p||get_sv
1553 Returns the SV of the specified Perl scalar. If C<create> is set and the
1554 Perl variable does not exist then it will be created. If C<create> is not
1555 set and the variable does not exist then NULL is returned.
1561 Perl_get_sv(pTHX_ const char *name, I32 create)
1565 if (name[1] == '\0' && !isALPHA(name[0])) {
1566 PADOFFSET tmp = find_threadsv(name);
1567 if (tmp != NOT_IN_PAD)
1568 return THREADSV(tmp);
1570 #endif /* USE_THREADS */
1571 gv = gv_fetchpv(name, create, SVt_PV);
1578 =for apidoc p||get_av
1580 Returns the AV of the specified Perl array. If C<create> is set and the
1581 Perl variable does not exist then it will be created. If C<create> is not
1582 set and the variable does not exist then NULL is returned.
1588 Perl_get_av(pTHX_ const char *name, I32 create)
1590 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1599 =for apidoc p||get_hv
1601 Returns the HV of the specified Perl hash. If C<create> is set and the
1602 Perl variable does not exist then it will be created. If C<create> is not
1603 set and the variable does not exist then NULL is returned.
1609 Perl_get_hv(pTHX_ const char *name, I32 create)
1611 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1620 =for apidoc p||get_cv
1622 Returns the CV of the specified Perl subroutine. If C<create> is set and
1623 the Perl subroutine does not exist then it will be declared (which has the
1624 same effect as saying C<sub name;>). If C<create> is not set and the
1625 subroutine does not exist then NULL is returned.
1631 Perl_get_cv(pTHX_ const char *name, I32 create)
1633 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1634 /* XXX unsafe for threads if eval_owner isn't held */
1635 /* XXX this is probably not what they think they're getting.
1636 * It has the same effect as "sub name;", i.e. just a forward
1638 if (create && !GvCVu(gv))
1639 return newSUB(start_subparse(FALSE, 0),
1640 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1648 /* Be sure to refetch the stack pointer after calling these routines. */
1651 =for apidoc p||call_argv
1653 Performs a callback to the specified Perl sub. See L<perlcall>.
1659 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1661 /* See G_* flags in cop.h */
1662 /* null terminated arg list */
1669 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1674 return call_pv(sub_name, flags);
1678 =for apidoc p||call_pv
1680 Performs a callback to the specified Perl sub. See L<perlcall>.
1686 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1687 /* name of the subroutine */
1688 /* See G_* flags in cop.h */
1690 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1694 =for apidoc p||call_method
1696 Performs a callback to the specified Perl method. The blessed object must
1697 be on the stack. See L<perlcall>.
1703 Perl_call_method(pTHX_ const char *methname, I32 flags)
1704 /* name of the subroutine */
1705 /* See G_* flags in cop.h */
1707 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1710 /* May be called with any of a CV, a GV, or an SV containing the name. */
1712 =for apidoc p||call_sv
1714 Performs a callback to the Perl sub whose name is in the SV. See
1721 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1722 /* See G_* flags in cop.h */
1725 LOGOP myop; /* fake syntax tree node */
1728 volatile I32 retval = 0;
1730 bool oldcatch = CATCH_GET;
1735 if (flags & G_DISCARD) {
1740 Zero(&myop, 1, LOGOP);
1741 myop.op_next = Nullop;
1742 if (!(flags & G_NOARGS))
1743 myop.op_flags |= OPf_STACKED;
1744 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1745 (flags & G_ARRAY) ? OPf_WANT_LIST :
1750 EXTEND(PL_stack_sp, 1);
1751 *++PL_stack_sp = sv;
1753 oldscope = PL_scopestack_ix;
1755 if (PERLDB_SUB && PL_curstash != PL_debstash
1756 /* Handle first BEGIN of -d. */
1757 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1758 /* Try harder, since this may have been a sighandler, thus
1759 * curstash may be meaningless. */
1760 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1761 && !(flags & G_NODEBUG))
1762 PL_op->op_private |= OPpENTERSUB_DB;
1764 if (flags & G_METHOD) {
1765 Zero(&method_op, 1, UNOP);
1766 method_op.op_next = PL_op;
1767 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1768 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1769 PL_op = (OP*)&method_op;
1772 if (!(flags & G_EVAL)) {
1774 call_body((OP*)&myop, FALSE);
1775 retval = PL_stack_sp - (PL_stack_base + oldmark);
1776 CATCH_SET(oldcatch);
1779 myop.op_other = (OP*)&myop;
1781 /* we're trying to emulate pp_entertry() here */
1783 register PERL_CONTEXT *cx;
1784 I32 gimme = GIMME_V;
1789 push_return(Nullop);
1790 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1792 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1794 PL_in_eval = EVAL_INEVAL;
1795 if (flags & G_KEEPERR)
1796 PL_in_eval |= EVAL_KEEPERR;
1802 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1804 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1811 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1813 call_body((OP*)&myop, FALSE);
1815 retval = PL_stack_sp - (PL_stack_base + oldmark);
1816 if (!(flags & G_KEEPERR))
1823 /* my_exit() was called */
1824 PL_curstash = PL_defstash;
1827 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1828 Perl_croak(aTHX_ "Callback called exit");
1833 PL_op = PL_restartop;
1837 PL_stack_sp = PL_stack_base + oldmark;
1838 if (flags & G_ARRAY)
1842 *++PL_stack_sp = &PL_sv_undef;
1847 if (PL_scopestack_ix > oldscope) {
1851 register PERL_CONTEXT *cx;
1863 if (flags & G_DISCARD) {
1864 PL_stack_sp = PL_stack_base + oldmark;
1873 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1875 S_vcall_body(pTHX_ va_list args)
1877 OP *myop = va_arg(args, OP*);
1878 int is_eval = va_arg(args, int);
1880 call_body(myop, is_eval);
1886 S_call_body(pTHX_ OP *myop, int is_eval)
1888 if (PL_op == myop) {
1890 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1892 PL_op = Perl_pp_entersub(aTHX); /* this does */
1898 /* Eval a string. The G_EVAL flag is always assumed. */
1901 =for apidoc p||eval_sv
1903 Tells Perl to C<eval> the string in the SV.
1909 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1911 /* See G_* flags in cop.h */
1914 UNOP myop; /* fake syntax tree node */
1915 volatile I32 oldmark = SP - PL_stack_base;
1916 volatile I32 retval = 0;
1922 if (flags & G_DISCARD) {
1929 Zero(PL_op, 1, UNOP);
1930 EXTEND(PL_stack_sp, 1);
1931 *++PL_stack_sp = sv;
1932 oldscope = PL_scopestack_ix;
1934 if (!(flags & G_NOARGS))
1935 myop.op_flags = OPf_STACKED;
1936 myop.op_next = Nullop;
1937 myop.op_type = OP_ENTEREVAL;
1938 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1939 (flags & G_ARRAY) ? OPf_WANT_LIST :
1941 if (flags & G_KEEPERR)
1942 myop.op_flags |= OPf_SPECIAL;
1944 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1946 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1953 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1955 call_body((OP*)&myop,TRUE);
1957 retval = PL_stack_sp - (PL_stack_base + oldmark);
1958 if (!(flags & G_KEEPERR))
1965 /* my_exit() was called */
1966 PL_curstash = PL_defstash;
1969 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1970 Perl_croak(aTHX_ "Callback called exit");
1975 PL_op = PL_restartop;
1979 PL_stack_sp = PL_stack_base + oldmark;
1980 if (flags & G_ARRAY)
1984 *++PL_stack_sp = &PL_sv_undef;
1990 if (flags & G_DISCARD) {
1991 PL_stack_sp = PL_stack_base + oldmark;
2001 =for apidoc p||eval_pv
2003 Tells Perl to C<eval> the given string and return an SV* result.
2009 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2012 SV* sv = newSVpv(p, 0);
2014 eval_sv(sv, G_SCALAR);
2021 if (croak_on_error && SvTRUE(ERRSV)) {
2023 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2029 /* Require a module. */
2032 =for apidoc p||require_pv
2034 Tells Perl to C<require> the file named by the string argument. It is
2035 analogous to the Perl code C<eval "require '$file'">. It's even
2036 implemented that way; consider using Perl_load_module instead.
2041 Perl_require_pv(pTHX_ const char *pv)
2045 PUSHSTACKi(PERLSI_REQUIRE);
2047 sv = sv_newmortal();
2048 sv_setpv(sv, "require '");
2051 eval_sv(sv, G_DISCARD);
2057 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2061 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2062 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2066 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2068 /* This message really ought to be max 23 lines.
2069 * Removed -h because the user already knows that option. Others? */
2071 static char *usage_msg[] = {
2072 "-0[octal] specify record separator (\\0, if no argument)",
2073 "-a autosplit mode with -n or -p (splits $_ into @F)",
2074 "-C enable native wide character system interfaces",
2075 "-c check syntax only (runs BEGIN and CHECK blocks)",
2076 "-d[:debugger] run program under debugger",
2077 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2078 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2079 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2080 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2081 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2082 "-l[octal] enable line ending processing, specifies line terminator",
2083 "-[mM][-]module execute `use/no module...' before executing program",
2084 "-n assume 'while (<>) { ... }' loop around program",
2085 "-p assume loop like -n but print line also, like sed",
2086 "-P run program through C preprocessor before compilation",
2087 "-s enable rudimentary parsing for switches after programfile",
2088 "-S look for programfile using PATH environment variable",
2089 "-T enable tainting checks",
2090 "-u dump core after parsing program",
2091 "-U allow unsafe operations",
2092 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2093 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2094 "-w enable many useful warnings (RECOMMENDED)",
2095 "-W enable all warnings",
2096 "-X disable all warnings",
2097 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2101 char **p = usage_msg;
2103 PerlIO_printf(PerlIO_stdout(),
2104 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2107 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2110 /* This routine handles any switches that can be given during run */
2113 Perl_moreswitches(pTHX_ char *s)
2121 numlen = 0; /* disallow underscores */
2122 rschar = (U32)scan_oct(s, 4, &numlen);
2123 SvREFCNT_dec(PL_nrs);
2124 if (rschar & ~((U8)~0))
2125 PL_nrs = &PL_sv_undef;
2126 else if (!rschar && numlen >= 2)
2127 PL_nrs = newSVpvn("", 0);
2130 PL_nrs = newSVpvn(&ch, 1);
2135 PL_widesyscalls = TRUE;
2140 PL_splitstr = savepv(s + 1);
2154 /* The following permits -d:Mod to accepts arguments following an =
2155 in the fashion that -MSome::Mod does. */
2156 if (*s == ':' || *s == '=') {
2159 sv = newSVpv("use Devel::", 0);
2161 /* We now allow -d:Module=Foo,Bar */
2162 while(isALNUM(*s) || *s==':') ++s;
2164 sv_catpv(sv, start);
2166 sv_catpvn(sv, start, s-start);
2167 sv_catpv(sv, " split(/,/,q{");
2172 my_setenv("PERL5DB", SvPV(sv, PL_na));
2175 PL_perldb = PERLDB_ALL;
2183 if (isALPHA(s[1])) {
2184 /* if adding extra options, remember to update DEBUG_MASK */
2185 static char debopts[] = "psltocPmfrxuLHXDSTR";
2188 for (s++; *s && (d = strchr(debopts,*s)); s++)
2189 PL_debug |= 1 << (d - debopts);
2192 PL_debug = atoi(s+1);
2193 for (s++; isDIGIT(*s); s++) ;
2195 PL_debug |= DEBUG_TOP_FLAG;
2197 if (ckWARN_d(WARN_DEBUGGING))
2198 Perl_warner(aTHX_ WARN_DEBUGGING,
2199 "Recompile perl with -DDEBUGGING to use -D switch\n");
2200 for (s++; isALNUM(*s); s++) ;
2206 usage(PL_origargv[0]);
2210 Safefree(PL_inplace);
2211 PL_inplace = savepv(s+1);
2213 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2216 if (*s == '-') /* Additional switches on #! line. */
2220 case 'I': /* -I handled both here and in parse_perl() */
2223 while (*s && isSPACE(*s))
2228 /* ignore trailing spaces (possibly followed by other switches) */
2230 for (e = p; *e && !isSPACE(*e); e++) ;
2234 } while (*p && *p != '-');
2235 e = savepvn(s, e-s);
2236 incpush(e, TRUE, TRUE);
2243 Perl_croak(aTHX_ "No directory specified for -I");
2249 SvREFCNT_dec(PL_ors_sv);
2253 PL_ors_sv = newSVpvn("\n",1);
2254 numlen = 0; /* disallow underscores */
2255 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2259 if (RsPARA(PL_nrs)) {
2260 PL_ors_sv = newSVpvn("\n\n",2);
2263 PL_ors_sv = newSVsv(PL_nrs);
2268 forbid_setid("-M"); /* XXX ? */
2271 forbid_setid("-m"); /* XXX ? */
2276 /* -M-foo == 'no foo' */
2277 if (*s == '-') { use = "no "; ++s; }
2278 sv = newSVpv(use,0);
2280 /* We allow -M'Module qw(Foo Bar)' */
2281 while(isALNUM(*s) || *s==':') ++s;
2283 sv_catpv(sv, start);
2284 if (*(start-1) == 'm') {
2286 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2287 sv_catpv( sv, " ()");
2291 Perl_croak(aTHX_ "Module name required with -%c option",
2293 sv_catpvn(sv, start, s-start);
2294 sv_catpv(sv, " split(/,/,q{");
2300 PL_preambleav = newAV();
2301 av_push(PL_preambleav, sv);
2304 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2316 PL_doswitches = TRUE;
2321 Perl_croak(aTHX_ "Too late for \"-T\" option");
2325 #ifdef MACOS_TRADITIONAL
2326 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2328 PL_do_undump = TRUE;
2337 PerlIO_printf(PerlIO_stdout(),
2338 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2339 PL_patchlevel, ARCHNAME));
2341 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2342 PerlIO_printf(PerlIO_stdout(),
2343 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2344 PerlIO_printf(PerlIO_stdout(),
2345 Perl_form(aTHX_ " built under %s at %s %s\n",
2346 OSNAME, __DATE__, __TIME__));
2347 PerlIO_printf(PerlIO_stdout(),
2348 Perl_form(aTHX_ " OS Specific Release: %s\n",
2352 #if defined(LOCAL_PATCH_COUNT)
2353 if (LOCAL_PATCH_COUNT > 0)
2354 PerlIO_printf(PerlIO_stdout(),
2355 "\n(with %d registered patch%s, "
2356 "see perl -V for more detail)",
2357 (int)LOCAL_PATCH_COUNT,
2358 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2361 PerlIO_printf(PerlIO_stdout(),
2362 "\n\nCopyright 1987-2001, Larry Wall\n");
2363 #ifdef MACOS_TRADITIONAL
2364 PerlIO_printf(PerlIO_stdout(),
2365 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
2368 PerlIO_printf(PerlIO_stdout(),
2369 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2372 PerlIO_printf(PerlIO_stdout(),
2373 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2374 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2377 PerlIO_printf(PerlIO_stdout(),
2378 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2379 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2382 PerlIO_printf(PerlIO_stdout(),
2383 "atariST series port, ++jrb bammi@cadence.com\n");
2386 PerlIO_printf(PerlIO_stdout(),
2387 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2390 PerlIO_printf(PerlIO_stdout(),
2391 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
2394 PerlIO_printf(PerlIO_stdout(),
2395 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2398 PerlIO_printf(PerlIO_stdout(),
2399 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2402 PerlIO_printf(PerlIO_stdout(),
2403 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2406 PerlIO_printf(PerlIO_stdout(),
2407 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2410 PerlIO_printf(PerlIO_stdout(),
2411 "MiNT port by Guido Flohr, 1997-1999\n");
2414 PerlIO_printf(PerlIO_stdout(),
2415 "EPOC port by Olaf Flebbe, 1999-2000\n");
2417 #ifdef BINARY_BUILD_NOTICE
2418 BINARY_BUILD_NOTICE;
2420 PerlIO_printf(PerlIO_stdout(),
2422 Perl may be copied only under the terms of either the Artistic License or the\n\
2423 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2424 Complete documentation for Perl, including FAQ lists, should be found on\n\
2425 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2426 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2429 if (! (PL_dowarn & G_WARN_ALL_MASK))
2430 PL_dowarn |= G_WARN_ON;
2434 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2435 PL_compiling.cop_warnings = pWARN_ALL ;
2439 PL_dowarn = G_WARN_ALL_OFF;
2440 PL_compiling.cop_warnings = pWARN_NONE ;
2445 if (s[1] == '-') /* Additional switches on #! line. */
2450 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2456 #ifdef ALTERNATE_SHEBANG
2457 case 'S': /* OS/2 needs -S on "extproc" line. */
2465 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2470 /* compliments of Tom Christiansen */
2472 /* unexec() can be found in the Gnu emacs distribution */
2473 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2476 Perl_my_unexec(pTHX)
2484 prog = newSVpv(BIN_EXP, 0);
2485 sv_catpv(prog, "/perl");
2486 file = newSVpv(PL_origfilename, 0);
2487 sv_catpv(file, ".perldump");
2489 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2490 /* unexec prints msg to stderr in case of failure */
2491 PerlProc_exit(status);
2494 # include <lib$routines.h>
2495 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2497 ABORT(); /* for use with undump */
2502 /* initialize curinterp */
2507 #ifdef PERL_OBJECT /* XXX kludge */
2510 PL_chopset = " \n-"; \
2511 PL_copline = NOLINE; \
2512 PL_curcop = &PL_compiling;\
2513 PL_curcopdb = NULL; \
2515 PL_dumpindent = 4; \
2516 PL_laststatval = -1; \
2517 PL_laststype = OP_STAT; \
2518 PL_maxscream = -1; \
2519 PL_maxsysfd = MAXSYSFD; \
2520 PL_statname = Nullsv; \
2521 PL_tmps_floor = -1; \
2523 PL_op_mask = NULL; \
2524 PL_laststatval = -1; \
2525 PL_laststype = OP_STAT; \
2526 PL_mess_sv = Nullsv; \
2527 PL_splitstr = " "; \
2528 PL_generation = 100; \
2529 PL_exitlist = NULL; \
2530 PL_exitlistlen = 0; \
2532 PL_in_clean_objs = FALSE; \
2533 PL_in_clean_all = FALSE; \
2534 PL_profiledata = NULL; \
2536 PL_rsfp_filters = Nullav; \
2541 # ifdef MULTIPLICITY
2542 # define PERLVAR(var,type)
2543 # define PERLVARA(var,n,type)
2544 # if defined(PERL_IMPLICIT_CONTEXT)
2545 # if defined(USE_THREADS)
2546 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2547 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2548 # else /* !USE_THREADS */
2549 # define PERLVARI(var,type,init) aTHX->var = init;
2550 # define PERLVARIC(var,type,init) aTHX->var = init;
2551 # endif /* USE_THREADS */
2553 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2554 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2556 # include "intrpvar.h"
2557 # ifndef USE_THREADS
2558 # include "thrdvar.h"
2565 # define PERLVAR(var,type)
2566 # define PERLVARA(var,n,type)
2567 # define PERLVARI(var,type,init) PL_##var = init;
2568 # define PERLVARIC(var,type,init) PL_##var = init;
2569 # include "intrpvar.h"
2570 # ifndef USE_THREADS
2571 # include "thrdvar.h"
2583 S_init_main_stash(pTHX)
2587 /* Note that strtab is a rather special HV. Assumptions are made
2588 about not iterating on it, and not adding tie magic to it.
2589 It is properly deallocated in perl_destruct() */
2590 PL_strtab = newHV();
2592 MUTEX_INIT(&PL_strtab_mutex);
2594 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2595 hv_ksplit(PL_strtab, 512);
2597 PL_curstash = PL_defstash = newHV();
2598 PL_curstname = newSVpvn("main",4);
2599 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2600 SvREFCNT_dec(GvHV(gv));
2601 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2603 HvNAME(PL_defstash) = savepv("main");
2604 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2605 GvMULTI_on(PL_incgv);
2606 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2607 GvMULTI_on(PL_hintgv);
2608 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2609 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2610 GvMULTI_on(PL_errgv);
2611 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2612 GvMULTI_on(PL_replgv);
2613 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2614 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2615 sv_setpvn(ERRSV, "", 0);
2616 PL_curstash = PL_defstash;
2617 CopSTASH_set(&PL_compiling, PL_defstash);
2618 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2619 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2620 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2621 /* We must init $/ before switches are processed. */
2622 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2626 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2631 PL_origfilename = savepv("-e");
2634 /* if find_script() returns, it returns a malloc()-ed value */
2635 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2637 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2638 char *s = scriptname + 8;
2639 *fdscript = atoi(s);
2643 scriptname = savepv(s + 1);
2644 Safefree(PL_origfilename);
2645 PL_origfilename = scriptname;
2651 Safefree(CopFILE(PL_curcop));
2653 SvREFCNT_dec(CopFILEGV(PL_curcop));
2655 CopFILE_set(PL_curcop, PL_origfilename);
2656 if (strEQ(PL_origfilename,"-"))
2658 if (*fdscript >= 0) {
2659 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2660 #if defined(HAS_FCNTL) && defined(F_SETFD)
2662 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2665 else if (PL_preprocess) {
2666 char *cpp_cfg = CPPSTDIN;
2667 SV *cpp = newSVpvn("",0);
2668 SV *cmd = NEWSV(0,0);
2670 if (strEQ(cpp_cfg, "cppstdin"))
2671 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2672 sv_catpv(cpp, cpp_cfg);
2674 sv_catpvn(sv, "-I", 2);
2675 sv_catpv(sv,PRIVLIB_EXP);
2677 DEBUG_P(PerlIO_printf(Perl_debug_log,
2678 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2679 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2680 #if defined(MSDOS) || defined(WIN32)
2681 Perl_sv_setpvf(aTHX_ cmd, "\
2682 sed %s -e \"/^[^#]/b\" \
2683 -e \"/^#[ ]*include[ ]/b\" \
2684 -e \"/^#[ ]*define[ ]/b\" \
2685 -e \"/^#[ ]*if[ ]/b\" \
2686 -e \"/^#[ ]*ifdef[ ]/b\" \
2687 -e \"/^#[ ]*ifndef[ ]/b\" \
2688 -e \"/^#[ ]*else/b\" \
2689 -e \"/^#[ ]*elif[ ]/b\" \
2690 -e \"/^#[ ]*undef[ ]/b\" \
2691 -e \"/^#[ ]*endif/b\" \
2693 %s | %"SVf" -C %"SVf" %s",
2694 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2697 Perl_sv_setpvf(aTHX_ cmd, "\
2698 %s %s -e '/^[^#]/b' \
2699 -e '/^#[ ]*include[ ]/b' \
2700 -e '/^#[ ]*define[ ]/b' \
2701 -e '/^#[ ]*if[ ]/b' \
2702 -e '/^#[ ]*ifdef[ ]/b' \
2703 -e '/^#[ ]*ifndef[ ]/b' \
2704 -e '/^#[ ]*else/b' \
2705 -e '/^#[ ]*elif[ ]/b' \
2706 -e '/^#[ ]*undef[ ]/b' \
2707 -e '/^#[ ]*endif/b' \
2709 %s | %"SVf" %"SVf" %s",
2711 Perl_sv_setpvf(aTHX_ cmd, "\
2712 %s %s -e '/^[^#]/b' \
2713 -e '/^#[ ]*include[ ]/b' \
2714 -e '/^#[ ]*define[ ]/b' \
2715 -e '/^#[ ]*if[ ]/b' \
2716 -e '/^#[ ]*ifdef[ ]/b' \
2717 -e '/^#[ ]*ifndef[ ]/b' \
2718 -e '/^#[ ]*else/b' \
2719 -e '/^#[ ]*elif[ ]/b' \
2720 -e '/^#[ ]*undef[ ]/b' \
2721 -e '/^#[ ]*endif/b' \
2723 %s | %"SVf" -C %"SVf" %s",
2730 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2732 scriptname, cpp, sv, CPPMINUS);
2733 PL_doextract = FALSE;
2734 #ifdef IAMSUID /* actually, this is caught earlier */
2735 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2737 (void)seteuid(PL_uid); /* musn't stay setuid root */
2740 (void)setreuid((Uid_t)-1, PL_uid);
2742 #ifdef HAS_SETRESUID
2743 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2745 PerlProc_setuid(PL_uid);
2749 if (PerlProc_geteuid() != PL_uid)
2750 Perl_croak(aTHX_ "Can't do seteuid!\n");
2752 #endif /* IAMSUID */
2753 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2757 else if (!*scriptname) {
2758 forbid_setid("program input from stdin");
2759 PL_rsfp = PerlIO_stdin();
2762 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2763 #if defined(HAS_FCNTL) && defined(F_SETFD)
2765 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2770 #ifndef IAMSUID /* in case script is not readable before setuid */
2772 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2773 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2776 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2777 (int)PERL_REVISION, (int)PERL_VERSION,
2778 (int)PERL_SUBVERSION), PL_origargv);
2779 Perl_croak(aTHX_ "Can't do setuid\n");
2785 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2788 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2789 CopFILE(PL_curcop), Strerror(errno));
2795 * I_SYSSTATVFS HAS_FSTATVFS
2797 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2798 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2799 * here so that metaconfig picks them up. */
2803 S_fd_on_nosuid_fs(pTHX_ int fd)
2805 int check_okay = 0; /* able to do all the required sys/libcalls */
2806 int on_nosuid = 0; /* the fd is on a nosuid fs */
2808 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2809 * fstatvfs() is UNIX98.
2810 * fstatfs() is 4.3 BSD.
2811 * ustat()+getmnt() is pre-4.3 BSD.
2812 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2813 * an irrelevant filesystem while trying to reach the right one.
2816 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2818 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2819 defined(HAS_FSTATVFS)
2820 # define FD_ON_NOSUID_CHECK_OKAY
2821 struct statvfs stfs;
2823 check_okay = fstatvfs(fd, &stfs) == 0;
2824 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2825 # endif /* fstatvfs */
2827 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2828 defined(PERL_MOUNT_NOSUID) && \
2829 defined(HAS_FSTATFS) && \
2830 defined(HAS_STRUCT_STATFS) && \
2831 defined(HAS_STRUCT_STATFS_F_FLAGS)
2832 # define FD_ON_NOSUID_CHECK_OKAY
2835 check_okay = fstatfs(fd, &stfs) == 0;
2836 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2837 # endif /* fstatfs */
2839 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2840 defined(PERL_MOUNT_NOSUID) && \
2841 defined(HAS_FSTAT) && \
2842 defined(HAS_USTAT) && \
2843 defined(HAS_GETMNT) && \
2844 defined(HAS_STRUCT_FS_DATA) && \
2846 # define FD_ON_NOSUID_CHECK_OKAY
2849 if (fstat(fd, &fdst) == 0) {
2851 if (ustat(fdst.st_dev, &us) == 0) {
2853 /* NOSTAT_ONE here because we're not examining fields which
2854 * vary between that case and STAT_ONE. */
2855 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2856 size_t cmplen = sizeof(us.f_fname);
2857 if (sizeof(fsd.fd_req.path) < cmplen)
2858 cmplen = sizeof(fsd.fd_req.path);
2859 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2860 fdst.st_dev == fsd.fd_req.dev) {
2862 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2868 # endif /* fstat+ustat+getmnt */
2870 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2871 defined(HAS_GETMNTENT) && \
2872 defined(HAS_HASMNTOPT) && \
2873 defined(MNTOPT_NOSUID)
2874 # define FD_ON_NOSUID_CHECK_OKAY
2875 FILE *mtab = fopen("/etc/mtab", "r");
2876 struct mntent *entry;
2877 struct stat stb, fsb;
2879 if (mtab && (fstat(fd, &stb) == 0)) {
2880 while (entry = getmntent(mtab)) {
2881 if (stat(entry->mnt_dir, &fsb) == 0
2882 && fsb.st_dev == stb.st_dev)
2884 /* found the filesystem */
2886 if (hasmntopt(entry, MNTOPT_NOSUID))
2889 } /* A single fs may well fail its stat(). */
2894 # endif /* getmntent+hasmntopt */
2897 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2900 #endif /* IAMSUID */
2903 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2909 /* do we need to emulate setuid on scripts? */
2911 /* This code is for those BSD systems that have setuid #! scripts disabled
2912 * in the kernel because of a security problem. Merely defining DOSUID
2913 * in perl will not fix that problem, but if you have disabled setuid
2914 * scripts in the kernel, this will attempt to emulate setuid and setgid
2915 * on scripts that have those now-otherwise-useless bits set. The setuid
2916 * root version must be called suidperl or sperlN.NNN. If regular perl
2917 * discovers that it has opened a setuid script, it calls suidperl with
2918 * the same argv that it had. If suidperl finds that the script it has
2919 * just opened is NOT setuid root, it sets the effective uid back to the
2920 * uid. We don't just make perl setuid root because that loses the
2921 * effective uid we had before invoking perl, if it was different from the
2924 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2925 * be defined in suidperl only. suidperl must be setuid root. The
2926 * Configure script will set this up for you if you want it.
2932 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2933 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2934 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2939 #ifndef HAS_SETREUID
2940 /* On this access check to make sure the directories are readable,
2941 * there is actually a small window that the user could use to make
2942 * filename point to an accessible directory. So there is a faint
2943 * chance that someone could execute a setuid script down in a
2944 * non-accessible directory. I don't know what to do about that.
2945 * But I don't think it's too important. The manual lies when
2946 * it says access() is useful in setuid programs.
2948 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2949 Perl_croak(aTHX_ "Permission denied");
2951 /* If we can swap euid and uid, then we can determine access rights
2952 * with a simple stat of the file, and then compare device and
2953 * inode to make sure we did stat() on the same file we opened.
2954 * Then we just have to make sure he or she can execute it.
2957 struct stat tmpstatbuf;
2961 setreuid(PL_euid,PL_uid) < 0
2964 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2967 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2968 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2969 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2970 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2971 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2972 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2973 Perl_croak(aTHX_ "Permission denied");
2975 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2976 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2977 (void)PerlIO_close(PL_rsfp);
2978 Perl_croak(aTHX_ "Permission denied\n");
2982 setreuid(PL_uid,PL_euid) < 0
2984 # if defined(HAS_SETRESUID)
2985 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2988 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2989 Perl_croak(aTHX_ "Can't reswap uid and euid");
2990 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2991 Perl_croak(aTHX_ "Permission denied\n");
2993 #endif /* HAS_SETREUID */
2994 #endif /* IAMSUID */
2996 if (!S_ISREG(PL_statbuf.st_mode))
2997 Perl_croak(aTHX_ "Permission denied");
2998 if (PL_statbuf.st_mode & S_IWOTH)
2999 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3000 PL_doswitches = FALSE; /* -s is insecure in suid */
3001 CopLINE_inc(PL_curcop);
3002 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3003 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3004 Perl_croak(aTHX_ "No #! line");
3005 s = SvPV(PL_linestr,n_a)+2;
3007 while (!isSPACE(*s)) s++;
3008 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3009 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3010 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3011 Perl_croak(aTHX_ "Not a perl script");
3012 while (*s == ' ' || *s == '\t') s++;
3014 * #! arg must be what we saw above. They can invoke it by
3015 * mentioning suidperl explicitly, but they may not add any strange
3016 * arguments beyond what #! says if they do invoke suidperl that way.
3018 len = strlen(validarg);
3019 if (strEQ(validarg," PHOOEY ") ||
3020 strnNE(s,validarg,len) || !isSPACE(s[len]))
3021 Perl_croak(aTHX_ "Args must match #! line");
3024 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3025 PL_euid == PL_statbuf.st_uid)
3027 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3028 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3029 #endif /* IAMSUID */
3031 if (PL_euid) { /* oops, we're not the setuid root perl */
3032 (void)PerlIO_close(PL_rsfp);
3035 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3036 (int)PERL_REVISION, (int)PERL_VERSION,
3037 (int)PERL_SUBVERSION), PL_origargv);
3039 Perl_croak(aTHX_ "Can't do setuid\n");
3042 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3044 (void)setegid(PL_statbuf.st_gid);
3047 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3049 #ifdef HAS_SETRESGID
3050 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3052 PerlProc_setgid(PL_statbuf.st_gid);
3056 if (PerlProc_getegid() != PL_statbuf.st_gid)
3057 Perl_croak(aTHX_ "Can't do setegid!\n");
3059 if (PL_statbuf.st_mode & S_ISUID) {
3060 if (PL_statbuf.st_uid != PL_euid)
3062 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3065 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3067 #ifdef HAS_SETRESUID
3068 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3070 PerlProc_setuid(PL_statbuf.st_uid);
3074 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3075 Perl_croak(aTHX_ "Can't do seteuid!\n");
3077 else if (PL_uid) { /* oops, mustn't run as root */
3079 (void)seteuid((Uid_t)PL_uid);
3082 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3084 #ifdef HAS_SETRESUID
3085 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3087 PerlProc_setuid((Uid_t)PL_uid);
3091 if (PerlProc_geteuid() != PL_uid)
3092 Perl_croak(aTHX_ "Can't do seteuid!\n");
3095 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3096 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3099 else if (PL_preprocess)
3100 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3101 else if (fdscript >= 0)
3102 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3104 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3106 /* We absolutely must clear out any saved ids here, so we */
3107 /* exec the real perl, substituting fd script for scriptname. */
3108 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3109 PerlIO_rewind(PL_rsfp);
3110 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3111 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3112 if (!PL_origargv[which])
3113 Perl_croak(aTHX_ "Permission denied");
3114 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3115 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3116 #if defined(HAS_FCNTL) && defined(F_SETFD)
3117 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3119 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3120 (int)PERL_REVISION, (int)PERL_VERSION,
3121 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3122 Perl_croak(aTHX_ "Can't do setuid\n");
3123 #endif /* IAMSUID */
3125 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3126 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3127 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3128 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3130 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3133 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3134 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3135 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3136 /* not set-id, must be wrapped */
3142 S_find_beginning(pTHX)
3144 register char *s, *s2;
3146 /* skip forward in input to the real script? */
3149 #ifdef MACOS_TRADITIONAL
3150 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3152 while (PL_doextract || gMacPerl_AlwaysExtract) {
3153 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3154 if (!gMacPerl_AlwaysExtract)
3155 Perl_croak(aTHX_ "No Perl script found in input\n");
3157 if (PL_doextract) /* require explicit override ? */
3158 if (!OverrideExtract(PL_origfilename))
3159 Perl_croak(aTHX_ "User aborted script\n");
3161 PL_doextract = FALSE;
3163 /* Pater peccavi, file does not have #! */
3164 PerlIO_rewind(PL_rsfp);
3169 while (PL_doextract) {
3170 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3171 Perl_croak(aTHX_ "No Perl script found in input\n");
3174 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3175 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3176 PL_doextract = FALSE;
3177 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3179 while (*s == ' ' || *s == '\t') s++;
3181 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3182 if (strnEQ(s2-4,"perl",4))
3184 while ((s = moreswitches(s)))
3187 #ifdef MACOS_TRADITIONAL
3198 PL_uid = PerlProc_getuid();
3199 PL_euid = PerlProc_geteuid();
3200 PL_gid = PerlProc_getgid();
3201 PL_egid = PerlProc_getegid();
3203 PL_uid |= PL_gid << 16;
3204 PL_euid |= PL_egid << 16;
3206 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3210 S_forbid_setid(pTHX_ char *s)
3212 if (PL_euid != PL_uid)
3213 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3214 if (PL_egid != PL_gid)
3215 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3219 Perl_init_debugger(pTHX)
3221 HV *ostash = PL_curstash;
3223 PL_curstash = PL_debstash;
3224 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3225 AvREAL_off(PL_dbargs);
3226 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3227 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3228 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3229 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3230 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3231 sv_setiv(PL_DBsingle, 0);
3232 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3233 sv_setiv(PL_DBtrace, 0);
3234 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3235 sv_setiv(PL_DBsignal, 0);
3236 PL_curstash = ostash;
3239 #ifndef STRESS_REALLOC
3240 #define REASONABLE(size) (size)
3242 #define REASONABLE(size) (1) /* unreasonable */
3246 Perl_init_stacks(pTHX)
3248 /* start with 128-item stack and 8K cxstack */
3249 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3250 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3251 PL_curstackinfo->si_type = PERLSI_MAIN;
3252 PL_curstack = PL_curstackinfo->si_stack;
3253 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3255 PL_stack_base = AvARRAY(PL_curstack);
3256 PL_stack_sp = PL_stack_base;
3257 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3259 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3262 PL_tmps_max = REASONABLE(128);
3264 New(54,PL_markstack,REASONABLE(32),I32);
3265 PL_markstack_ptr = PL_markstack;
3266 PL_markstack_max = PL_markstack + REASONABLE(32);
3270 New(54,PL_scopestack,REASONABLE(32),I32);
3271 PL_scopestack_ix = 0;
3272 PL_scopestack_max = REASONABLE(32);
3274 New(54,PL_savestack,REASONABLE(128),ANY);
3275 PL_savestack_ix = 0;
3276 PL_savestack_max = REASONABLE(128);
3278 New(54,PL_retstack,REASONABLE(16),OP*);
3280 PL_retstack_max = REASONABLE(16);
3288 while (PL_curstackinfo->si_next)
3289 PL_curstackinfo = PL_curstackinfo->si_next;
3290 while (PL_curstackinfo) {
3291 PERL_SI *p = PL_curstackinfo->si_prev;
3292 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3293 Safefree(PL_curstackinfo->si_cxstack);
3294 Safefree(PL_curstackinfo);
3295 PL_curstackinfo = p;
3297 Safefree(PL_tmps_stack);
3298 Safefree(PL_markstack);
3299 Safefree(PL_scopestack);
3300 Safefree(PL_savestack);
3301 Safefree(PL_retstack);
3305 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3316 lex_start(PL_linestr);
3318 PL_subname = newSVpvn("main",4);
3322 S_init_predump_symbols(pTHX)
3327 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3328 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3329 GvMULTI_on(PL_stdingv);
3330 io = GvIOp(PL_stdingv);
3331 IoTYPE(io) = IoTYPE_RDONLY;
3332 IoIFP(io) = PerlIO_stdin();
3333 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3335 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3337 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3340 IoTYPE(io) = IoTYPE_WRONLY;
3341 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3343 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3345 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3347 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3348 GvMULTI_on(PL_stderrgv);
3349 io = GvIOp(PL_stderrgv);
3350 IoTYPE(io) = IoTYPE_WRONLY;
3351 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3352 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3354 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3356 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3359 Safefree(PL_osname);
3360 PL_osname = savepv(OSNAME);
3364 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3369 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3370 char **dup_env_base = 0;
3371 int dup_env_count = 0;
3374 argc--,argv++; /* skip name of script */
3375 if (PL_doswitches) {
3376 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3379 if (argv[0][1] == '-' && !argv[0][2]) {
3383 if ((s = strchr(argv[0], '='))) {
3385 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3388 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3391 PL_toptarget = NEWSV(0,0);
3392 sv_upgrade(PL_toptarget, SVt_PVFM);
3393 sv_setpvn(PL_toptarget, "", 0);
3394 PL_bodytarget = NEWSV(0,0);
3395 sv_upgrade(PL_bodytarget, SVt_PVFM);
3396 sv_setpvn(PL_bodytarget, "", 0);
3397 PL_formtarget = PL_bodytarget;
3400 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3401 #ifdef MACOS_TRADITIONAL
3402 /* $0 is not majick on a Mac */
3403 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3405 sv_setpv(GvSV(tmpgv),PL_origfilename);
3406 magicname("0", "0", 1);
3409 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3411 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3413 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3415 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3416 GvMULTI_on(PL_argvgv);
3417 (void)gv_AVadd(PL_argvgv);
3418 av_clear(GvAVn(PL_argvgv));
3419 for (; argc > 0; argc--,argv++) {
3420 SV *sv = newSVpv(argv[0],0);
3421 av_push(GvAVn(PL_argvgv),sv);
3422 if (PL_widesyscalls)
3423 (void)sv_utf8_decode(sv);
3426 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3428 GvMULTI_on(PL_envgv);
3429 hv = GvHVn(PL_envgv);
3430 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3431 #ifdef USE_ENVIRON_ARRAY
3432 /* Note that if the supplied env parameter is actually a copy
3433 of the global environ then it may now point to free'd memory
3434 if the environment has been modified since. To avoid this
3435 problem we treat env==NULL as meaning 'use the default'
3440 environ[0] = Nullch;
3441 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3444 for (env_base = env; *env; env++)
3446 if ((dup_env_base = (char **)
3447 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
3449 for (env = env_base, dup_env = dup_env_base;
3452 /* With environ one needs to use safesysmalloc(). */
3453 *dup_env = safesysmalloc(strlen(*env) + 1);
3454 (void)strcpy(*dup_env, *env);
3460 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3461 for (; *env; env++) {
3462 if (!(s = strchr(*env,'=')))
3468 sv = newSVpv(s--,0);
3469 (void)hv_store(hv, *env, s - *env, sv, 0);
3472 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3475 for (dup_env = dup_env_base; *dup_env; dup_env++)
3476 safesysfree(*dup_env);
3477 safesysfree(dup_env_base);
3479 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3480 #endif /* USE_ENVIRON_ARRAY */
3483 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3484 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3488 S_init_perllib(pTHX)
3493 s = PerlEnv_getenv("PERL5LIB");
3495 incpush(s, TRUE, TRUE);
3497 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3499 /* Treat PERL5?LIB as a possible search list logical name -- the
3500 * "natural" VMS idiom for a Unix path string. We allow each
3501 * element to be a set of |-separated directories for compatibility.
3505 if (my_trnlnm("PERL5LIB",buf,0))
3506 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3508 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3512 /* Use the ~-expanded versions of APPLLIB (undocumented),
3513 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3516 incpush(APPLLIB_EXP, TRUE, TRUE);
3520 incpush(ARCHLIB_EXP, FALSE, FALSE);
3522 #ifdef MACOS_TRADITIONAL
3524 struct stat tmpstatbuf;
3525 SV * privdir = NEWSV(55, 0);
3526 char * macperl = PerlEnv_getenv("MACPERL");
3531 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3532 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3533 incpush(SvPVX(privdir), TRUE, FALSE);
3534 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3535 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3536 incpush(SvPVX(privdir), TRUE, FALSE);
3538 SvREFCNT_dec(privdir);
3541 incpush(":", FALSE, FALSE);
3544 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3547 incpush(PRIVLIB_EXP, TRUE, FALSE);
3549 incpush(PRIVLIB_EXP, FALSE, FALSE);
3553 /* sitearch is always relative to sitelib on Windows for
3554 * DLL-based path intuition to work correctly */
3555 # if !defined(WIN32)
3556 incpush(SITEARCH_EXP, FALSE, FALSE);
3562 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3564 incpush(SITELIB_EXP, FALSE, FALSE);
3568 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3569 incpush(SITELIB_STEM, FALSE, TRUE);
3572 #ifdef PERL_VENDORARCH_EXP
3573 /* vendorarch is always relative to vendorlib on Windows for
3574 * DLL-based path intuition to work correctly */
3575 # if !defined(WIN32)
3576 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3580 #ifdef PERL_VENDORLIB_EXP
3582 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3584 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3588 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3589 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3592 #ifdef PERL_OTHERLIBDIRS
3593 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3597 incpush(".", FALSE, FALSE);
3598 #endif /* MACOS_TRADITIONAL */
3601 #if defined(DOSISH) || defined(EPOC)
3602 # define PERLLIB_SEP ';'
3605 # define PERLLIB_SEP '|'
3607 # if defined(MACOS_TRADITIONAL)
3608 # define PERLLIB_SEP ','
3610 # define PERLLIB_SEP ':'
3614 #ifndef PERLLIB_MANGLE
3615 # define PERLLIB_MANGLE(s,n) (s)
3619 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3621 SV *subdir = Nullsv;
3626 if (addsubdirs || addoldvers) {
3627 subdir = sv_newmortal();
3630 /* Break at all separators */
3632 SV *libdir = NEWSV(55,0);
3635 /* skip any consecutive separators */
3636 while ( *p == PERLLIB_SEP ) {
3637 /* Uncomment the next line for PATH semantics */
3638 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3642 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3643 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3648 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3649 p = Nullch; /* break out */
3651 #ifdef MACOS_TRADITIONAL
3652 if (!strchr(SvPVX(libdir), ':'))
3653 sv_insert(libdir, 0, 0, ":", 1);
3654 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3655 sv_catpv(libdir, ":");
3659 * BEFORE pushing libdir onto @INC we may first push version- and
3660 * archname-specific sub-directories.
3662 if (addsubdirs || addoldvers) {
3663 #ifdef PERL_INC_VERSION_LIST
3664 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3665 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3666 const char **incver;
3668 struct stat tmpstatbuf;
3673 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3675 while (unix[len-1] == '/') len--; /* Cosmetic */
3676 sv_usepvn(libdir,unix,len);
3679 PerlIO_printf(Perl_error_log,
3680 "Failed to unixify @INC element \"%s\"\n",
3684 #ifdef MACOS_TRADITIONAL
3685 #define PERL_AV_SUFFIX_FMT ""
3686 #define PERL_ARCH_FMT "%s:"
3687 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3689 #define PERL_AV_SUFFIX_FMT "/"
3690 #define PERL_ARCH_FMT "/%s"
3691 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3693 /* .../version/archname if -d .../version/archname */
3694 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3696 (int)PERL_REVISION, (int)PERL_VERSION,
3697 (int)PERL_SUBVERSION, ARCHNAME);
3698 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3699 S_ISDIR(tmpstatbuf.st_mode))
3700 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3702 /* .../version if -d .../version */
3703 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3704 (int)PERL_REVISION, (int)PERL_VERSION,
3705 (int)PERL_SUBVERSION);
3706 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3707 S_ISDIR(tmpstatbuf.st_mode))
3708 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3710 /* .../archname if -d .../archname */
3711 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3712 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3713 S_ISDIR(tmpstatbuf.st_mode))
3714 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3717 #ifdef PERL_INC_VERSION_LIST
3719 for (incver = incverlist; *incver; incver++) {
3720 /* .../xxx if -d .../xxx */
3721 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3722 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3723 S_ISDIR(tmpstatbuf.st_mode))
3724 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3730 /* finally push this lib directory on the end of @INC */
3731 av_push(GvAVn(PL_incgv), libdir);
3736 STATIC struct perl_thread *
3737 S_init_main_thread(pTHX)
3739 #if !defined(PERL_IMPLICIT_CONTEXT)
3740 struct perl_thread *thr;
3744 Newz(53, thr, 1, struct perl_thread);
3745 PL_curcop = &PL_compiling;
3746 thr->interp = PERL_GET_INTERP;
3747 thr->cvcache = newHV();
3748 thr->threadsv = newAV();
3749 /* thr->threadsvp is set when find_threadsv is called */
3750 thr->specific = newAV();
3751 thr->flags = THRf_R_JOINABLE;
3752 MUTEX_INIT(&thr->mutex);
3753 /* Handcraft thrsv similarly to mess_sv */
3754 New(53, PL_thrsv, 1, SV);
3755 Newz(53, xpv, 1, XPV);
3756 SvFLAGS(PL_thrsv) = SVt_PV;
3757 SvANY(PL_thrsv) = (void*)xpv;
3758 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3759 SvPVX(PL_thrsv) = (char*)thr;
3760 SvCUR_set(PL_thrsv, sizeof(thr));
3761 SvLEN_set(PL_thrsv, sizeof(thr));
3762 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3763 thr->oursv = PL_thrsv;
3764 PL_chopset = " \n-";
3767 MUTEX_LOCK(&PL_threads_mutex);
3773 MUTEX_UNLOCK(&PL_threads_mutex);
3775 #ifdef HAVE_THREAD_INTERN
3776 Perl_init_thread_intern(thr);
3779 #ifdef SET_THREAD_SELF
3780 SET_THREAD_SELF(thr);
3782 thr->self = pthread_self();
3783 #endif /* SET_THREAD_SELF */
3787 * These must come after the thread self setting
3788 * because sv_setpvn does SvTAINT and the taint
3789 * fields thread selfness being set.
3791 PL_toptarget = NEWSV(0,0);
3792 sv_upgrade(PL_toptarget, SVt_PVFM);
3793 sv_setpvn(PL_toptarget, "", 0);
3794 PL_bodytarget = NEWSV(0,0);
3795 sv_upgrade(PL_bodytarget, SVt_PVFM);
3796 sv_setpvn(PL_bodytarget, "", 0);
3797 PL_formtarget = PL_bodytarget;
3798 thr->errsv = newSVpvn("", 0);
3799 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3802 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3803 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3804 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3805 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3806 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3808 PL_reginterp_cnt = 0;
3812 #endif /* USE_THREADS */
3815 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3818 line_t oldline = CopLINE(PL_curcop);
3824 while (AvFILL(paramList) >= 0) {
3825 cv = (CV*)av_shift(paramList);
3826 if ((PL_minus_c & 0x10) && (paramList == PL_beginav)) {
3827 /* save PL_beginav for compiler */
3828 if (! PL_beginav_save)
3829 PL_beginav_save = newAV();
3830 av_push(PL_beginav_save, (SV*)cv);
3834 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3835 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3841 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3845 (void)SvPV(atsv, len);
3848 PL_curcop = &PL_compiling;
3849 CopLINE_set(PL_curcop, oldline);
3850 if (paramList == PL_beginav)
3851 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3853 Perl_sv_catpvf(aTHX_ atsv,
3854 "%s failed--call queue aborted",
3855 paramList == PL_checkav ? "CHECK"
3856 : paramList == PL_initav ? "INIT"
3858 while (PL_scopestack_ix > oldscope)
3861 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3868 /* my_exit() was called */
3869 while (PL_scopestack_ix > oldscope)
3872 PL_curstash = PL_defstash;
3873 PL_curcop = &PL_compiling;
3874 CopLINE_set(PL_curcop, oldline);
3876 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3877 if (paramList == PL_beginav)
3878 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3880 Perl_croak(aTHX_ "%s failed--call queue aborted",
3881 paramList == PL_checkav ? "CHECK"
3882 : paramList == PL_initav ? "INIT"
3889 PL_curcop = &PL_compiling;
3890 CopLINE_set(PL_curcop, oldline);
3893 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3901 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3903 S_vcall_list_body(pTHX_ va_list args)
3905 CV *cv = va_arg(args, CV*);
3906 return call_list_body(cv);
3911 S_call_list_body(pTHX_ CV *cv)
3913 PUSHMARK(PL_stack_sp);
3914 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3919 Perl_my_exit(pTHX_ U32 status)
3921 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3922 thr, (unsigned long) status));
3931 STATUS_NATIVE_SET(status);
3938 Perl_my_failure_exit(pTHX)
3941 if (vaxc$errno & 1) {
3942 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3943 STATUS_NATIVE_SET(44);
3946 if (!vaxc$errno && errno) /* unlikely */
3947 STATUS_NATIVE_SET(44);
3949 STATUS_NATIVE_SET(vaxc$errno);
3954 STATUS_POSIX_SET(errno);
3956 exitstatus = STATUS_POSIX >> 8;
3957 if (exitstatus & 255)
3958 STATUS_POSIX_SET(exitstatus);
3960 STATUS_POSIX_SET(255);
3967 S_my_exit_jump(pTHX)
3969 register PERL_CONTEXT *cx;
3974 SvREFCNT_dec(PL_e_script);
3975 PL_e_script = Nullsv;
3978 POPSTACK_TO(PL_mainstack);
3979 if (cxstack_ix >= 0) {
3982 POPBLOCK(cx,PL_curpm);
3994 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3997 p = SvPVX(PL_e_script);
3998 nl = strchr(p, '\n');
3999 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4001 filter_del(read_e_script);
4004 sv_catpvn(buf_sv, p, nl-p);
4005 sv_chop(PL_e_script, nl);