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)
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);
183 MUTEX_INIT(&PL_sv_lock_mutex);
184 MUTEX_INIT(&PL_fdpid_mutex);
186 thr = init_main_thread();
187 #endif /* USE_THREADS */
189 #ifdef PERL_FLEXIBLE_EXCEPTIONS
190 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
193 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
195 PL_linestr = NEWSV(65,79);
196 sv_upgrade(PL_linestr,SVt_PVIV);
198 if (!SvREADONLY(&PL_sv_undef)) {
199 /* set read-only and try to insure than we wont see REFCNT==0
202 SvREADONLY_on(&PL_sv_undef);
203 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
205 sv_setpv(&PL_sv_no,PL_No);
207 SvREADONLY_on(&PL_sv_no);
208 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
210 sv_setpv(&PL_sv_yes,PL_Yes);
212 SvREADONLY_on(&PL_sv_yes);
213 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
218 /* PL_sighandlerp = sighandler; */
220 PL_sighandlerp = Perl_sighandler;
222 PL_pidstatus = newHV();
226 * There is no way we can refer to them from Perl so close them to save
227 * space. The other alternative would be to provide STDAUX and STDPRN
230 (void)fclose(stdaux);
231 (void)fclose(stdprn);
235 PL_nrs = newSVpvn("\n", 1);
236 PL_rs = SvREFCNT_inc(PL_nrs);
241 PL_lex_state = LEX_NOTPARSING;
247 SET_NUMERIC_STANDARD();
251 PL_patchlevel = NEWSV(0,4);
252 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
253 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
254 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
255 s = (U8*)SvPVX(PL_patchlevel);
256 /* Build version strings using "native" characters */
257 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
258 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
259 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
261 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
262 SvPOK_on(PL_patchlevel);
263 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
264 + ((NV)PERL_VERSION / (NV)1000)
265 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
266 + ((NV)PERL_SUBVERSION / (NV)1000000)
269 SvNOK_on(PL_patchlevel); /* dual valued */
270 SvUTF8_on(PL_patchlevel);
271 SvREADONLY_on(PL_patchlevel);
274 #if defined(LOCAL_PATCH_COUNT)
275 PL_localpatches = local_patches; /* For possible -v */
278 #ifdef HAVE_INTERP_INTERN
282 PerlIO_init(); /* Hook to IO system */
284 PL_fdpid = newAV(); /* for remembering popen pids by fd */
285 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
286 PL_errors = newSVpvn("",0);
292 =for apidoc perl_destruct
294 Shuts down a Perl interpreter. See L<perlembed>.
302 int destruct_level; /* 0=none, 1=full, 2=full with checks */
307 #endif /* USE_THREADS */
309 /* wait for all pseudo-forked children to finish */
310 PERL_WAIT_FOR_CHILDREN;
314 /* Pass 1 on any remaining threads: detach joinables, join zombies */
316 MUTEX_LOCK(&PL_threads_mutex);
317 DEBUG_S(PerlIO_printf(Perl_debug_log,
318 "perl_destruct: waiting for %d threads...\n",
320 for (t = thr->next; t != thr; t = t->next) {
321 MUTEX_LOCK(&t->mutex);
322 switch (ThrSTATE(t)) {
325 DEBUG_S(PerlIO_printf(Perl_debug_log,
326 "perl_destruct: joining zombie %p\n", t));
327 ThrSETSTATE(t, THRf_DEAD);
328 MUTEX_UNLOCK(&t->mutex);
331 * The SvREFCNT_dec below may take a long time (e.g. av
332 * may contain an object scalar whose destructor gets
333 * called) so we have to unlock threads_mutex and start
336 MUTEX_UNLOCK(&PL_threads_mutex);
338 SvREFCNT_dec((SV*)av);
339 DEBUG_S(PerlIO_printf(Perl_debug_log,
340 "perl_destruct: joined zombie %p OK\n", t));
342 case THRf_R_JOINABLE:
343 DEBUG_S(PerlIO_printf(Perl_debug_log,
344 "perl_destruct: detaching thread %p\n", t));
345 ThrSETSTATE(t, THRf_R_DETACHED);
347 * We unlock threads_mutex and t->mutex in the opposite order
348 * from which we locked them just so that DETACH won't
349 * deadlock if it panics. It's only a breach of good style
350 * not a bug since they are unlocks not locks.
352 MUTEX_UNLOCK(&PL_threads_mutex);
354 MUTEX_UNLOCK(&t->mutex);
357 DEBUG_S(PerlIO_printf(Perl_debug_log,
358 "perl_destruct: ignoring %p (state %u)\n",
360 MUTEX_UNLOCK(&t->mutex);
361 /* fall through and out */
364 /* We leave the above "Pass 1" loop with threads_mutex still locked */
366 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
367 while (PL_nthreads > 1)
369 DEBUG_S(PerlIO_printf(Perl_debug_log,
370 "perl_destruct: final wait for %d threads\n",
372 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
374 /* At this point, we're the last thread */
375 MUTEX_UNLOCK(&PL_threads_mutex);
376 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
377 MUTEX_DESTROY(&PL_threads_mutex);
378 COND_DESTROY(&PL_nthreads_cond);
380 #endif /* !defined(FAKE_THREADS) */
381 #endif /* USE_THREADS */
383 destruct_level = PL_perl_destruct_level;
387 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
389 if (destruct_level < i)
399 /* We must account for everything. */
401 /* Destroy the main CV and syntax tree */
403 PL_curpad = AvARRAY(PL_comppad);
404 op_free(PL_main_root);
405 PL_main_root = Nullop;
407 PL_curcop = &PL_compiling;
408 PL_main_start = Nullop;
409 SvREFCNT_dec(PL_main_cv);
413 /* Tell PerlIO we are about to tear things apart in case
414 we have layers which are using resources that should
418 PerlIO_destruct(aTHX);
420 if (PL_sv_objcount) {
422 * Try to destruct global references. We do this first so that the
423 * destructors and destructees still exist. Some sv's might remain.
424 * Non-referenced objects are on their own.
429 /* unhook hooks which will soon be, or use, destroyed data */
430 SvREFCNT_dec(PL_warnhook);
431 PL_warnhook = Nullsv;
432 SvREFCNT_dec(PL_diehook);
435 /* call exit list functions */
436 while (PL_exitlistlen-- > 0)
437 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
439 Safefree(PL_exitlist);
441 if (destruct_level == 0){
443 DEBUG_P(debprofdump());
445 /* The exit() function will do everything that needs doing. */
449 /* jettison our possibly duplicated environment */
451 #ifdef USE_ENVIRON_ARRAY
452 if (environ != PL_origenviron) {
455 for (i = 0; environ[i]; i++)
456 safesysfree(environ[i]);
457 /* Must use safesysfree() when working with environ. */
458 safesysfree(environ);
460 environ = PL_origenviron;
464 /* loosen bonds of global variables */
467 (void)PerlIO_close(PL_rsfp);
471 /* Filters for program text */
472 SvREFCNT_dec(PL_rsfp_filters);
473 PL_rsfp_filters = Nullav;
476 PL_preprocess = FALSE;
482 PL_doswitches = FALSE;
483 PL_dowarn = G_WARN_OFF;
484 PL_doextract = FALSE;
485 PL_sawampersand = FALSE; /* must save all match strings */
488 Safefree(PL_inplace);
490 SvREFCNT_dec(PL_patchlevel);
493 SvREFCNT_dec(PL_e_script);
494 PL_e_script = Nullsv;
497 /* magical thingies */
499 SvREFCNT_dec(PL_ofs_sv); /* $, */
502 SvREFCNT_dec(PL_ors_sv); /* $\ */
505 SvREFCNT_dec(PL_rs); /* $/ */
508 SvREFCNT_dec(PL_nrs); /* $/ helper */
511 PL_multiline = 0; /* $* */
512 Safefree(PL_osname); /* $^O */
515 SvREFCNT_dec(PL_statname);
516 PL_statname = Nullsv;
519 /* defgv, aka *_ should be taken care of elsewhere */
521 /* clean up after study() */
522 SvREFCNT_dec(PL_lastscream);
523 PL_lastscream = Nullsv;
524 Safefree(PL_screamfirst);
526 Safefree(PL_screamnext);
530 Safefree(PL_efloatbuf);
531 PL_efloatbuf = Nullch;
534 /* startup and shutdown function lists */
535 SvREFCNT_dec(PL_beginav);
536 SvREFCNT_dec(PL_endav);
537 SvREFCNT_dec(PL_checkav);
538 SvREFCNT_dec(PL_initav);
544 /* shortcuts just get cleared */
550 PL_argvoutgv = Nullgv;
552 PL_stderrgv = Nullgv;
553 PL_last_in_gv = Nullgv;
555 PL_debstash = Nullhv;
557 /* reset so print() ends up where we expect */
560 SvREFCNT_dec(PL_argvout_stack);
561 PL_argvout_stack = Nullav;
563 SvREFCNT_dec(PL_modglobal);
564 PL_modglobal = Nullhv;
565 SvREFCNT_dec(PL_preambleav);
566 PL_preambleav = Nullav;
567 SvREFCNT_dec(PL_subname);
569 SvREFCNT_dec(PL_linestr);
571 SvREFCNT_dec(PL_pidstatus);
572 PL_pidstatus = Nullhv;
573 SvREFCNT_dec(PL_toptarget);
574 PL_toptarget = Nullsv;
575 SvREFCNT_dec(PL_bodytarget);
576 PL_bodytarget = Nullsv;
577 PL_formtarget = Nullsv;
579 /* free locale stuff */
580 #ifdef USE_LOCALE_COLLATE
581 Safefree(PL_collation_name);
582 PL_collation_name = Nullch;
585 #ifdef USE_LOCALE_NUMERIC
586 Safefree(PL_numeric_name);
587 PL_numeric_name = Nullch;
588 SvREFCNT_dec(PL_numeric_radix_sv);
591 /* clear utf8 character classes */
592 SvREFCNT_dec(PL_utf8_alnum);
593 SvREFCNT_dec(PL_utf8_alnumc);
594 SvREFCNT_dec(PL_utf8_ascii);
595 SvREFCNT_dec(PL_utf8_alpha);
596 SvREFCNT_dec(PL_utf8_space);
597 SvREFCNT_dec(PL_utf8_cntrl);
598 SvREFCNT_dec(PL_utf8_graph);
599 SvREFCNT_dec(PL_utf8_digit);
600 SvREFCNT_dec(PL_utf8_upper);
601 SvREFCNT_dec(PL_utf8_lower);
602 SvREFCNT_dec(PL_utf8_print);
603 SvREFCNT_dec(PL_utf8_punct);
604 SvREFCNT_dec(PL_utf8_xdigit);
605 SvREFCNT_dec(PL_utf8_mark);
606 SvREFCNT_dec(PL_utf8_toupper);
607 SvREFCNT_dec(PL_utf8_tolower);
608 PL_utf8_alnum = Nullsv;
609 PL_utf8_alnumc = Nullsv;
610 PL_utf8_ascii = Nullsv;
611 PL_utf8_alpha = Nullsv;
612 PL_utf8_space = Nullsv;
613 PL_utf8_cntrl = Nullsv;
614 PL_utf8_graph = Nullsv;
615 PL_utf8_digit = Nullsv;
616 PL_utf8_upper = Nullsv;
617 PL_utf8_lower = Nullsv;
618 PL_utf8_print = Nullsv;
619 PL_utf8_punct = Nullsv;
620 PL_utf8_xdigit = Nullsv;
621 PL_utf8_mark = Nullsv;
622 PL_utf8_toupper = Nullsv;
623 PL_utf8_totitle = Nullsv;
624 PL_utf8_tolower = Nullsv;
626 if (!specialWARN(PL_compiling.cop_warnings))
627 SvREFCNT_dec(PL_compiling.cop_warnings);
628 PL_compiling.cop_warnings = Nullsv;
629 if (!specialCopIO(PL_compiling.cop_io))
630 SvREFCNT_dec(PL_compiling.cop_io);
631 PL_compiling.cop_io = Nullsv;
633 Safefree(CopFILE(&PL_compiling));
634 CopFILE(&PL_compiling) = Nullch;
635 Safefree(CopSTASHPV(&PL_compiling));
637 SvREFCNT_dec(CopFILEGV(&PL_compiling));
638 CopFILEGV(&PL_compiling) = Nullgv;
639 /* cop_stash is not refcounted */
642 /* Prepare to destruct main symbol table. */
647 SvREFCNT_dec(PL_curstname);
648 PL_curstname = Nullsv;
650 /* clear queued errors */
651 SvREFCNT_dec(PL_errors);
655 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
656 if (PL_scopestack_ix != 0)
657 Perl_warner(aTHX_ WARN_INTERNAL,
658 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
659 (long)PL_scopestack_ix);
660 if (PL_savestack_ix != 0)
661 Perl_warner(aTHX_ WARN_INTERNAL,
662 "Unbalanced saves: %ld more saves than restores\n",
663 (long)PL_savestack_ix);
664 if (PL_tmps_floor != -1)
665 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
666 (long)PL_tmps_floor + 1);
667 if (cxstack_ix != -1)
668 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
669 (long)cxstack_ix + 1);
672 /* Now absolutely destruct everything, somehow or other, loops or no. */
673 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
674 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
676 /* the 2 is for PL_fdpid and PL_strtab */
677 while (PL_sv_count > 2 && sv_clean_all())
680 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
681 SvFLAGS(PL_fdpid) |= SVt_PVAV;
682 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
683 SvFLAGS(PL_strtab) |= SVt_PVHV;
685 AvREAL_off(PL_fdpid); /* no surviving entries */
686 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
689 #ifdef HAVE_INTERP_INTERN
693 /* Destruct the global string table. */
695 /* Yell and reset the HeVAL() slots that are still holding refcounts,
696 * so that sv_free() won't fail on them.
704 max = HvMAX(PL_strtab);
705 array = HvARRAY(PL_strtab);
708 if (hent && ckWARN_d(WARN_INTERNAL)) {
709 Perl_warner(aTHX_ WARN_INTERNAL,
710 "Unbalanced string table refcount: (%d) for \"%s\"",
711 HeVAL(hent) - Nullsv, HeKEY(hent));
712 HeVAL(hent) = Nullsv;
722 SvREFCNT_dec(PL_strtab);
725 /* free the pointer table used for cloning */
726 ptr_table_free(PL_ptr_table);
729 /* free special SVs */
731 SvREFCNT(&PL_sv_yes) = 0;
732 sv_clear(&PL_sv_yes);
733 SvANY(&PL_sv_yes) = NULL;
734 SvFLAGS(&PL_sv_yes) = 0;
736 SvREFCNT(&PL_sv_no) = 0;
738 SvANY(&PL_sv_no) = NULL;
739 SvFLAGS(&PL_sv_no) = 0;
741 SvREFCNT(&PL_sv_undef) = 0;
742 SvREADONLY_off(&PL_sv_undef);
744 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
745 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
747 Safefree(PL_origfilename);
748 Safefree(PL_reg_start_tmp);
750 Safefree(PL_reg_curpm);
751 Safefree(PL_reg_poscache);
752 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
753 Safefree(PL_op_mask);
754 Safefree(PL_psig_ptr);
755 Safefree(PL_psig_name);
756 Safefree(PL_bitcount);
757 Safefree(PL_psig_pend);
759 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
761 DEBUG_P(debprofdump());
763 MUTEX_DESTROY(&PL_strtab_mutex);
764 MUTEX_DESTROY(&PL_sv_mutex);
765 MUTEX_DESTROY(&PL_eval_mutex);
766 MUTEX_DESTROY(&PL_cred_mutex);
767 MUTEX_DESTROY(&PL_fdpid_mutex);
768 COND_DESTROY(&PL_eval_cond);
769 #ifdef EMULATE_ATOMIC_REFCOUNTS
770 MUTEX_DESTROY(&PL_svref_mutex);
771 #endif /* EMULATE_ATOMIC_REFCOUNTS */
773 /* As the penultimate thing, free the non-arena SV for thrsv */
774 Safefree(SvPVX(PL_thrsv));
775 Safefree(SvANY(PL_thrsv));
778 #endif /* USE_THREADS */
782 /* As the absolutely last thing, free the non-arena SV for mess() */
785 /* it could have accumulated taint magic */
786 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
789 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
790 moremagic = mg->mg_moremagic;
791 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
793 Safefree(mg->mg_ptr);
797 /* we know that type >= SVt_PV */
798 (void)SvOOK_off(PL_mess_sv);
799 Safefree(SvPVX(PL_mess_sv));
800 Safefree(SvANY(PL_mess_sv));
801 Safefree(PL_mess_sv);
807 =for apidoc perl_free
809 Releases a Perl interpreter. See L<perlembed>.
817 #if defined(PERL_OBJECT)
821 # if defined(PERL_IMPLICIT_SYS)
822 void *host = w32_internal_host;
823 if (PerlProc_lasthost()) {
827 win32_delete_internal_host(host);
839 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
841 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
842 PL_exitlist[PL_exitlistlen].fn = fn;
843 PL_exitlist[PL_exitlistlen].ptr = ptr;
848 =for apidoc perl_parse
850 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
856 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
865 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
868 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
869 setuid perl scripts securely.\n");
873 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
874 _dyld_lookup_and_bind
875 ("__environ", (unsigned long *) &environ_pointer, NULL);
880 #ifdef USE_ENVIRON_ARRAY
881 PL_origenviron = environ;
886 /* Come here if running an undumped a.out. */
888 PL_origfilename = savepv(argv[0]);
889 PL_do_undump = FALSE;
890 cxstack_ix = -1; /* start label stack again */
892 init_postdump_symbols(argc,argv,env);
897 PL_curpad = AvARRAY(PL_comppad);
898 op_free(PL_main_root);
899 PL_main_root = Nullop;
901 PL_main_start = Nullop;
902 SvREFCNT_dec(PL_main_cv);
906 oldscope = PL_scopestack_ix;
907 PL_dowarn = G_WARN_OFF;
909 #ifdef PERL_FLEXIBLE_EXCEPTIONS
910 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
916 #ifndef PERL_FLEXIBLE_EXCEPTIONS
917 parse_body(env,xsinit);
920 call_list(oldscope, PL_checkav);
927 /* my_exit() was called */
928 while (PL_scopestack_ix > oldscope)
931 PL_curstash = PL_defstash;
933 call_list(oldscope, PL_checkav);
934 ret = STATUS_NATIVE_EXPORT;
937 PerlIO_printf(Perl_error_log, "panic: top_env\n");
945 #ifdef PERL_FLEXIBLE_EXCEPTIONS
947 S_vparse_body(pTHX_ va_list args)
949 char **env = va_arg(args, char**);
950 XSINIT_t xsinit = va_arg(args, XSINIT_t);
952 return parse_body(env, xsinit);
957 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
959 int argc = PL_origargc;
960 char **argv = PL_origargv;
961 char *scriptname = NULL;
963 VOL bool dosearch = FALSE;
968 char *popts, *cddir = Nullch;
970 sv_setpvn(PL_linestr,"",0);
971 sv = newSVpvn("",0); /* first used for -I flags */
975 for (argc--,argv++; argc > 0; argc--,argv++) {
976 if (argv[0][0] != '-' || !argv[0][1])
980 validarg = " PHOOEY ";
989 win32_argv2utf8(argc-1, argv+1);
992 #ifndef PERL_STRICT_CR
1016 if ((s = moreswitches(s)))
1026 #ifdef MACOS_TRADITIONAL
1027 /* ignore -e for Dev:Pseudo argument */
1028 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1031 if (PL_euid != PL_uid || PL_egid != PL_gid)
1032 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1034 PL_e_script = newSVpvn("",0);
1035 filter_add(read_e_script, NULL);
1038 sv_catpv(PL_e_script, s);
1040 sv_catpv(PL_e_script, argv[1]);
1044 Perl_croak(aTHX_ "No code specified for -e");
1045 sv_catpv(PL_e_script, "\n");
1048 case 'I': /* -I handled both here and in moreswitches() */
1050 if (!*++s && (s=argv[1]) != Nullch) {
1055 STRLEN len = strlen(s);
1056 p = savepvn(s, len);
1057 incpush(p, TRUE, TRUE);
1058 sv_catpvn(sv, "-I", 2);
1059 sv_catpvn(sv, p, len);
1060 sv_catpvn(sv, " ", 1);
1064 Perl_croak(aTHX_ "No directory specified for -I");
1068 PL_preprocess = TRUE;
1078 PL_preambleav = newAV();
1079 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1081 PL_Sv = newSVpv("print myconfig();",0);
1083 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1085 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1087 sv_catpv(PL_Sv,"\" Compile-time options:");
1089 sv_catpv(PL_Sv," DEBUGGING");
1091 # ifdef MULTIPLICITY
1092 sv_catpv(PL_Sv," MULTIPLICITY");
1095 sv_catpv(PL_Sv," USE_THREADS");
1097 # ifdef USE_ITHREADS
1098 sv_catpv(PL_Sv," USE_ITHREADS");
1100 # ifdef USE_64_BIT_INT
1101 sv_catpv(PL_Sv," USE_64_BIT_INT");
1103 # ifdef USE_64_BIT_ALL
1104 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1106 # ifdef USE_LONG_DOUBLE
1107 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1109 # ifdef USE_LARGE_FILES
1110 sv_catpv(PL_Sv," USE_LARGE_FILES");
1113 sv_catpv(PL_Sv," USE_SOCKS");
1116 sv_catpv(PL_Sv," PERL_OBJECT");
1118 # ifdef PERL_IMPLICIT_CONTEXT
1119 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1121 # ifdef PERL_IMPLICIT_SYS
1122 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1124 sv_catpv(PL_Sv,"\\n\",");
1126 #if defined(LOCAL_PATCH_COUNT)
1127 if (LOCAL_PATCH_COUNT > 0) {
1129 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1130 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1131 if (PL_localpatches[i])
1132 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1136 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1139 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1141 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1144 sv_catpv(PL_Sv, "; \
1146 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1147 print \" \\%ENV:\\n @env\\n\" if @env; \
1148 print \" \\@INC:\\n @INC\\n\";");
1151 PL_Sv = newSVpv("config_vars(qw(",0);
1152 sv_catpv(PL_Sv, ++s);
1153 sv_catpv(PL_Sv, "))");
1156 av_push(PL_preambleav, PL_Sv);
1157 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1160 PL_doextract = TRUE;
1168 if (!*++s || isSPACE(*s)) {
1172 /* catch use of gnu style long options */
1173 if (strEQ(s, "version")) {
1177 if (strEQ(s, "help")) {
1184 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1190 #ifndef SECURE_INTERNAL_GETENV
1193 (popts = PerlEnv_getenv("PERL5OPT")))
1198 if (*s == '-' && *(s+1) == 'T')
1213 if (!strchr("DIMUdmw", *s))
1214 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1227 scriptname = argv[0];
1230 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1232 else if (scriptname == Nullch) {
1234 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1242 open_script(scriptname,dosearch,sv,&fdscript);
1244 validate_suid(validarg, scriptname,fdscript);
1247 #if defined(SIGCHLD) || defined(SIGCLD)
1250 # define SIGCHLD SIGCLD
1252 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1253 if (sigstate == SIG_IGN) {
1254 if (ckWARN(WARN_SIGNAL))
1255 Perl_warner(aTHX_ WARN_SIGNAL,
1256 "Can't ignore signal CHLD, forcing to default");
1257 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1263 #ifdef MACOS_TRADITIONAL
1264 if (PL_doextract || gMacPerl_AlwaysExtract) {
1269 if (cddir && PerlDir_chdir(cddir) < 0)
1270 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1274 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1275 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1276 CvUNIQUE_on(PL_compcv);
1278 PL_comppad = newAV();
1279 av_push(PL_comppad, Nullsv);
1280 PL_curpad = AvARRAY(PL_comppad);
1281 PL_comppad_name = newAV();
1282 PL_comppad_name_fill = 0;
1283 PL_min_intro_pending = 0;
1286 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1287 PL_curpad[0] = (SV*)newAV();
1288 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1289 CvOWNER(PL_compcv) = 0;
1290 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1291 MUTEX_INIT(CvMUTEXP(PL_compcv));
1292 #endif /* USE_THREADS */
1294 comppadlist = newAV();
1295 AvREAL_off(comppadlist);
1296 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1297 av_store(comppadlist, 1, (SV*)PL_comppad);
1298 CvPADLIST(PL_compcv) = comppadlist;
1301 boot_core_UNIVERSAL();
1303 boot_core_xsutils();
1307 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1309 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1315 # ifdef HAS_SOCKS5_INIT
1316 socks5_init(argv[0]);
1322 init_predump_symbols();
1323 /* init_postdump_symbols not currently designed to be called */
1324 /* more than once (ENV isn't cleared first, for example) */
1325 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1327 init_postdump_symbols(argc,argv,env);
1331 /* now parse the script */
1333 SETERRNO(0,SS$_NORMAL);
1335 #ifdef MACOS_TRADITIONAL
1336 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1338 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1340 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1341 MacPerl_MPWFileName(PL_origfilename));
1345 if (yyparse() || PL_error_count) {
1347 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1349 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1354 CopLINE_set(PL_curcop, 0);
1355 PL_curstash = PL_defstash;
1356 PL_preprocess = FALSE;
1358 SvREFCNT_dec(PL_e_script);
1359 PL_e_script = Nullsv;
1362 /* now that script is parsed, we can modify record separator */
1363 SvREFCNT_dec(PL_rs);
1364 PL_rs = SvREFCNT_inc(PL_nrs);
1365 sv_setsv(get_sv("/", TRUE), PL_rs);
1370 SAVECOPFILE(PL_curcop);
1371 SAVECOPLINE(PL_curcop);
1372 gv_check(PL_defstash);
1379 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1380 dump_mstats("after compilation:");
1389 =for apidoc perl_run
1391 Tells a Perl interpreter to run. See L<perlembed>.
1406 oldscope = PL_scopestack_ix;
1408 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1410 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1416 cxstack_ix = -1; /* start context stack again */
1418 case 0: /* normal completion */
1419 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1424 case 2: /* my_exit() */
1425 while (PL_scopestack_ix > oldscope)
1428 PL_curstash = PL_defstash;
1429 if (PL_endav && !PL_minus_c)
1430 call_list(oldscope, PL_endav);
1432 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1433 dump_mstats("after execution: ");
1435 ret = STATUS_NATIVE_EXPORT;
1439 POPSTACK_TO(PL_mainstack);
1442 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1452 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1454 S_vrun_body(pTHX_ va_list args)
1456 I32 oldscope = va_arg(args, I32);
1458 return run_body(oldscope);
1464 S_run_body(pTHX_ I32 oldscope)
1466 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1467 PL_sawampersand ? "Enabling" : "Omitting"));
1469 if (!PL_restartop) {
1470 DEBUG_x(dump_all());
1471 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1472 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1476 #ifdef MACOS_TRADITIONAL
1477 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1479 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1483 if (PERLDB_SINGLE && PL_DBsingle)
1484 sv_setiv(PL_DBsingle, 1);
1486 call_list(oldscope, PL_initav);
1492 PL_op = PL_restartop;
1496 else if (PL_main_start) {
1497 CvDEPTH(PL_main_cv) = 1;
1498 PL_op = PL_main_start;
1508 =for apidoc p||get_sv
1510 Returns the SV of the specified Perl scalar. If C<create> is set and the
1511 Perl variable does not exist then it will be created. If C<create> is not
1512 set and the variable does not exist then NULL is returned.
1518 Perl_get_sv(pTHX_ const char *name, I32 create)
1522 if (name[1] == '\0' && !isALPHA(name[0])) {
1523 PADOFFSET tmp = find_threadsv(name);
1524 if (tmp != NOT_IN_PAD)
1525 return THREADSV(tmp);
1527 #endif /* USE_THREADS */
1528 gv = gv_fetchpv(name, create, SVt_PV);
1535 =for apidoc p||get_av
1537 Returns the AV of the specified Perl array. If C<create> is set and the
1538 Perl variable does not exist then it will be created. If C<create> is not
1539 set and the variable does not exist then NULL is returned.
1545 Perl_get_av(pTHX_ const char *name, I32 create)
1547 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1556 =for apidoc p||get_hv
1558 Returns the HV of the specified Perl hash. If C<create> is set and the
1559 Perl variable does not exist then it will be created. If C<create> is not
1560 set and the variable does not exist then NULL is returned.
1566 Perl_get_hv(pTHX_ const char *name, I32 create)
1568 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1577 =for apidoc p||get_cv
1579 Returns the CV of the specified Perl subroutine. If C<create> is set and
1580 the Perl subroutine does not exist then it will be declared (which has the
1581 same effect as saying C<sub name;>). If C<create> is not set and the
1582 subroutine does not exist then NULL is returned.
1588 Perl_get_cv(pTHX_ const char *name, I32 create)
1590 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1591 /* XXX unsafe for threads if eval_owner isn't held */
1592 /* XXX this is probably not what they think they're getting.
1593 * It has the same effect as "sub name;", i.e. just a forward
1595 if (create && !GvCVu(gv))
1596 return newSUB(start_subparse(FALSE, 0),
1597 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1605 /* Be sure to refetch the stack pointer after calling these routines. */
1608 =for apidoc p||call_argv
1610 Performs a callback to the specified Perl sub. See L<perlcall>.
1616 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1618 /* See G_* flags in cop.h */
1619 /* null terminated arg list */
1626 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1631 return call_pv(sub_name, flags);
1635 =for apidoc p||call_pv
1637 Performs a callback to the specified Perl sub. See L<perlcall>.
1643 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1644 /* name of the subroutine */
1645 /* See G_* flags in cop.h */
1647 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1651 =for apidoc p||call_method
1653 Performs a callback to the specified Perl method. The blessed object must
1654 be on the stack. See L<perlcall>.
1660 Perl_call_method(pTHX_ const char *methname, I32 flags)
1661 /* name of the subroutine */
1662 /* See G_* flags in cop.h */
1664 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1667 /* May be called with any of a CV, a GV, or an SV containing the name. */
1669 =for apidoc p||call_sv
1671 Performs a callback to the Perl sub whose name is in the SV. See
1678 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1679 /* See G_* flags in cop.h */
1682 LOGOP myop; /* fake syntax tree node */
1685 volatile I32 retval = 0;
1687 bool oldcatch = CATCH_GET;
1692 if (flags & G_DISCARD) {
1697 Zero(&myop, 1, LOGOP);
1698 myop.op_next = Nullop;
1699 if (!(flags & G_NOARGS))
1700 myop.op_flags |= OPf_STACKED;
1701 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1702 (flags & G_ARRAY) ? OPf_WANT_LIST :
1707 EXTEND(PL_stack_sp, 1);
1708 *++PL_stack_sp = sv;
1710 oldscope = PL_scopestack_ix;
1712 if (PERLDB_SUB && PL_curstash != PL_debstash
1713 /* Handle first BEGIN of -d. */
1714 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1715 /* Try harder, since this may have been a sighandler, thus
1716 * curstash may be meaningless. */
1717 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1718 && !(flags & G_NODEBUG))
1719 PL_op->op_private |= OPpENTERSUB_DB;
1721 if (flags & G_METHOD) {
1722 Zero(&method_op, 1, UNOP);
1723 method_op.op_next = PL_op;
1724 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1725 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1726 PL_op = (OP*)&method_op;
1729 if (!(flags & G_EVAL)) {
1731 call_body((OP*)&myop, FALSE);
1732 retval = PL_stack_sp - (PL_stack_base + oldmark);
1733 CATCH_SET(oldcatch);
1736 myop.op_other = (OP*)&myop;
1738 /* we're trying to emulate pp_entertry() here */
1740 register PERL_CONTEXT *cx;
1741 I32 gimme = GIMME_V;
1746 push_return(Nullop);
1747 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1749 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1751 PL_in_eval = EVAL_INEVAL;
1752 if (flags & G_KEEPERR)
1753 PL_in_eval |= EVAL_KEEPERR;
1759 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1761 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1768 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1770 call_body((OP*)&myop, FALSE);
1772 retval = PL_stack_sp - (PL_stack_base + oldmark);
1773 if (!(flags & G_KEEPERR))
1780 /* my_exit() was called */
1781 PL_curstash = PL_defstash;
1784 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1785 Perl_croak(aTHX_ "Callback called exit");
1790 PL_op = PL_restartop;
1794 PL_stack_sp = PL_stack_base + oldmark;
1795 if (flags & G_ARRAY)
1799 *++PL_stack_sp = &PL_sv_undef;
1804 if (PL_scopestack_ix > oldscope) {
1808 register PERL_CONTEXT *cx;
1820 if (flags & G_DISCARD) {
1821 PL_stack_sp = PL_stack_base + oldmark;
1830 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1832 S_vcall_body(pTHX_ va_list args)
1834 OP *myop = va_arg(args, OP*);
1835 int is_eval = va_arg(args, int);
1837 call_body(myop, is_eval);
1843 S_call_body(pTHX_ OP *myop, int is_eval)
1845 if (PL_op == myop) {
1847 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1849 PL_op = Perl_pp_entersub(aTHX); /* this does */
1855 /* Eval a string. The G_EVAL flag is always assumed. */
1858 =for apidoc p||eval_sv
1860 Tells Perl to C<eval> the string in the SV.
1866 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1868 /* See G_* flags in cop.h */
1871 UNOP myop; /* fake syntax tree node */
1872 volatile I32 oldmark = SP - PL_stack_base;
1873 volatile I32 retval = 0;
1879 if (flags & G_DISCARD) {
1886 Zero(PL_op, 1, UNOP);
1887 EXTEND(PL_stack_sp, 1);
1888 *++PL_stack_sp = sv;
1889 oldscope = PL_scopestack_ix;
1891 if (!(flags & G_NOARGS))
1892 myop.op_flags = OPf_STACKED;
1893 myop.op_next = Nullop;
1894 myop.op_type = OP_ENTEREVAL;
1895 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1896 (flags & G_ARRAY) ? OPf_WANT_LIST :
1898 if (flags & G_KEEPERR)
1899 myop.op_flags |= OPf_SPECIAL;
1901 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1903 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1910 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1912 call_body((OP*)&myop,TRUE);
1914 retval = PL_stack_sp - (PL_stack_base + oldmark);
1915 if (!(flags & G_KEEPERR))
1922 /* my_exit() was called */
1923 PL_curstash = PL_defstash;
1926 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1927 Perl_croak(aTHX_ "Callback called exit");
1932 PL_op = PL_restartop;
1936 PL_stack_sp = PL_stack_base + oldmark;
1937 if (flags & G_ARRAY)
1941 *++PL_stack_sp = &PL_sv_undef;
1947 if (flags & G_DISCARD) {
1948 PL_stack_sp = PL_stack_base + oldmark;
1958 =for apidoc p||eval_pv
1960 Tells Perl to C<eval> the given string and return an SV* result.
1966 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1969 SV* sv = newSVpv(p, 0);
1971 eval_sv(sv, G_SCALAR);
1978 if (croak_on_error && SvTRUE(ERRSV)) {
1980 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1986 /* Require a module. */
1989 =for apidoc p||require_pv
1991 Tells Perl to C<require> the file named by the string argument. It is
1992 analogous to the Perl code C<eval "require '$file'">. It's even
1993 implemented that way; consider using Perl_load_module instead.
1998 Perl_require_pv(pTHX_ const char *pv)
2002 PUSHSTACKi(PERLSI_REQUIRE);
2004 sv = sv_newmortal();
2005 sv_setpv(sv, "require '");
2008 eval_sv(sv, G_DISCARD);
2014 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2018 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2019 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2023 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2025 /* This message really ought to be max 23 lines.
2026 * Removed -h because the user already knows that opton. Others? */
2028 static char *usage_msg[] = {
2029 "-0[octal] specify record separator (\\0, if no argument)",
2030 "-a autosplit mode with -n or -p (splits $_ into @F)",
2031 "-C enable native wide character system interfaces",
2032 "-c check syntax only (runs BEGIN and CHECK blocks)",
2033 "-d[:debugger] run program under debugger",
2034 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2035 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2036 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2037 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2038 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2039 "-l[octal] enable line ending processing, specifies line terminator",
2040 "-[mM][-]module execute `use/no module...' before executing program",
2041 "-n assume 'while (<>) { ... }' loop around program",
2042 "-p assume loop like -n but print line also, like sed",
2043 "-P run program through C preprocessor before compilation",
2044 "-s enable rudimentary parsing for switches after programfile",
2045 "-S look for programfile using PATH environment variable",
2046 "-T enable tainting checks",
2047 "-u dump core after parsing program",
2048 "-U allow unsafe operations",
2049 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2050 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2051 "-w enable many useful warnings (RECOMMENDED)",
2052 "-W enable all warnings",
2053 "-X disable all warnings",
2054 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2058 char **p = usage_msg;
2060 PerlIO_printf(PerlIO_stdout(),
2061 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2064 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2067 /* This routine handles any switches that can be given during run */
2070 Perl_moreswitches(pTHX_ char *s)
2078 numlen = 0; /* disallow underscores */
2079 rschar = (U32)scan_oct(s, 4, &numlen);
2080 SvREFCNT_dec(PL_nrs);
2081 if (rschar & ~((U8)~0))
2082 PL_nrs = &PL_sv_undef;
2083 else if (!rschar && numlen >= 2)
2084 PL_nrs = newSVpvn("", 0);
2087 PL_nrs = newSVpvn(&ch, 1);
2092 PL_widesyscalls = TRUE;
2097 PL_splitstr = savepv(s + 1);
2111 /* The following permits -d:Mod to accepts arguments following an =
2112 in the fashion that -MSome::Mod does. */
2113 if (*s == ':' || *s == '=') {
2116 sv = newSVpv("use Devel::", 0);
2118 /* We now allow -d:Module=Foo,Bar */
2119 while(isALNUM(*s) || *s==':') ++s;
2121 sv_catpv(sv, start);
2123 sv_catpvn(sv, start, s-start);
2124 sv_catpv(sv, " split(/,/,q{");
2129 my_setenv("PERL5DB", SvPV(sv, PL_na));
2132 PL_perldb = PERLDB_ALL;
2140 if (isALPHA(s[1])) {
2141 /* if adding extra options, remember to update DEBUG_MASK */
2142 static char debopts[] = "psltocPmfrxuLHXDSTR";
2145 for (s++; *s && (d = strchr(debopts,*s)); s++)
2146 PL_debug |= 1 << (d - debopts);
2149 PL_debug = atoi(s+1);
2150 for (s++; isDIGIT(*s); s++) ;
2152 PL_debug |= DEBUG_TOP_FLAG;
2154 if (ckWARN_d(WARN_DEBUGGING))
2155 Perl_warner(aTHX_ WARN_DEBUGGING,
2156 "Recompile perl with -DDEBUGGING to use -D switch\n");
2157 for (s++; isALNUM(*s); s++) ;
2163 usage(PL_origargv[0]);
2167 Safefree(PL_inplace);
2168 PL_inplace = savepv(s+1);
2170 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2173 if (*s == '-') /* Additional switches on #! line. */
2177 case 'I': /* -I handled both here and in parse_perl() */
2180 while (*s && isSPACE(*s))
2185 /* ignore trailing spaces (possibly followed by other switches) */
2187 for (e = p; *e && !isSPACE(*e); e++) ;
2191 } while (*p && *p != '-');
2192 e = savepvn(s, e-s);
2193 incpush(e, TRUE, TRUE);
2200 Perl_croak(aTHX_ "No directory specified for -I");
2206 SvREFCNT_dec(PL_ors_sv);
2210 PL_ors_sv = newSVpvn("\n",1);
2211 numlen = 0; /* disallow underscores */
2212 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2216 if (RsPARA(PL_nrs)) {
2217 PL_ors_sv = newSVpvn("\n\n",2);
2220 PL_ors_sv = newSVsv(PL_nrs);
2225 forbid_setid("-M"); /* XXX ? */
2228 forbid_setid("-m"); /* XXX ? */
2233 /* -M-foo == 'no foo' */
2234 if (*s == '-') { use = "no "; ++s; }
2235 sv = newSVpv(use,0);
2237 /* We allow -M'Module qw(Foo Bar)' */
2238 while(isALNUM(*s) || *s==':') ++s;
2240 sv_catpv(sv, start);
2241 if (*(start-1) == 'm') {
2243 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2244 sv_catpv( sv, " ()");
2248 Perl_croak(aTHX_ "Module name required with -%c option",
2250 sv_catpvn(sv, start, s-start);
2251 sv_catpv(sv, " split(/,/,q{");
2257 PL_preambleav = newAV();
2258 av_push(PL_preambleav, sv);
2261 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2273 PL_doswitches = TRUE;
2278 Perl_croak(aTHX_ "Too late for \"-T\" option");
2282 #ifdef MACOS_TRADITIONAL
2283 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2285 PL_do_undump = TRUE;
2294 PerlIO_printf(PerlIO_stdout(),
2295 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2296 PL_patchlevel, ARCHNAME));
2298 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2299 PerlIO_printf(PerlIO_stdout(),
2300 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2301 PerlIO_printf(PerlIO_stdout(),
2302 Perl_form(aTHX_ " built under %s at %s %s\n",
2303 OSNAME, __DATE__, __TIME__));
2304 PerlIO_printf(PerlIO_stdout(),
2305 Perl_form(aTHX_ " OS Specific Release: %s\n",
2309 #if defined(LOCAL_PATCH_COUNT)
2310 if (LOCAL_PATCH_COUNT > 0)
2311 PerlIO_printf(PerlIO_stdout(),
2312 "\n(with %d registered patch%s, "
2313 "see perl -V for more detail)",
2314 (int)LOCAL_PATCH_COUNT,
2315 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2318 PerlIO_printf(PerlIO_stdout(),
2319 "\n\nCopyright 1987-2001, Larry Wall\n");
2320 #ifdef MACOS_TRADITIONAL
2321 PerlIO_printf(PerlIO_stdout(),
2322 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
2325 PerlIO_printf(PerlIO_stdout(),
2326 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2329 PerlIO_printf(PerlIO_stdout(),
2330 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2331 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2334 PerlIO_printf(PerlIO_stdout(),
2335 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2336 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2339 PerlIO_printf(PerlIO_stdout(),
2340 "atariST series port, ++jrb bammi@cadence.com\n");
2343 PerlIO_printf(PerlIO_stdout(),
2344 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2347 PerlIO_printf(PerlIO_stdout(),
2348 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
2351 PerlIO_printf(PerlIO_stdout(),
2352 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2355 PerlIO_printf(PerlIO_stdout(),
2356 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2359 PerlIO_printf(PerlIO_stdout(),
2360 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2363 PerlIO_printf(PerlIO_stdout(),
2364 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2367 PerlIO_printf(PerlIO_stdout(),
2368 "MiNT port by Guido Flohr, 1997-1999\n");
2371 PerlIO_printf(PerlIO_stdout(),
2372 "EPOC port by Olaf Flebbe, 1999-2000\n");
2374 #ifdef BINARY_BUILD_NOTICE
2375 BINARY_BUILD_NOTICE;
2377 PerlIO_printf(PerlIO_stdout(),
2379 Perl may be copied only under the terms of either the Artistic License or the\n\
2380 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2381 Complete documentation for Perl, including FAQ lists, should be found on\n\
2382 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2383 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2386 if (! (PL_dowarn & G_WARN_ALL_MASK))
2387 PL_dowarn |= G_WARN_ON;
2391 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2392 PL_compiling.cop_warnings = pWARN_ALL ;
2396 PL_dowarn = G_WARN_ALL_OFF;
2397 PL_compiling.cop_warnings = pWARN_NONE ;
2402 if (s[1] == '-') /* Additional switches on #! line. */
2407 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2413 #ifdef ALTERNATE_SHEBANG
2414 case 'S': /* OS/2 needs -S on "extproc" line. */
2422 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2427 /* compliments of Tom Christiansen */
2429 /* unexec() can be found in the Gnu emacs distribution */
2430 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2433 Perl_my_unexec(pTHX)
2441 prog = newSVpv(BIN_EXP, 0);
2442 sv_catpv(prog, "/perl");
2443 file = newSVpv(PL_origfilename, 0);
2444 sv_catpv(file, ".perldump");
2446 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2447 /* unexec prints msg to stderr in case of failure */
2448 PerlProc_exit(status);
2451 # include <lib$routines.h>
2452 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2454 ABORT(); /* for use with undump */
2459 /* initialize curinterp */
2464 #ifdef PERL_OBJECT /* XXX kludge */
2467 PL_chopset = " \n-"; \
2468 PL_copline = NOLINE; \
2469 PL_curcop = &PL_compiling;\
2470 PL_curcopdb = NULL; \
2472 PL_dumpindent = 4; \
2473 PL_laststatval = -1; \
2474 PL_laststype = OP_STAT; \
2475 PL_maxscream = -1; \
2476 PL_maxsysfd = MAXSYSFD; \
2477 PL_statname = Nullsv; \
2478 PL_tmps_floor = -1; \
2480 PL_op_mask = NULL; \
2481 PL_laststatval = -1; \
2482 PL_laststype = OP_STAT; \
2483 PL_mess_sv = Nullsv; \
2484 PL_splitstr = " "; \
2485 PL_generation = 100; \
2486 PL_exitlist = NULL; \
2487 PL_exitlistlen = 0; \
2489 PL_in_clean_objs = FALSE; \
2490 PL_in_clean_all = FALSE; \
2491 PL_profiledata = NULL; \
2493 PL_rsfp_filters = Nullav; \
2498 # ifdef MULTIPLICITY
2499 # define PERLVAR(var,type)
2500 # define PERLVARA(var,n,type)
2501 # if defined(PERL_IMPLICIT_CONTEXT)
2502 # if defined(USE_THREADS)
2503 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2504 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2505 # else /* !USE_THREADS */
2506 # define PERLVARI(var,type,init) aTHX->var = init;
2507 # define PERLVARIC(var,type,init) aTHX->var = init;
2508 # endif /* USE_THREADS */
2510 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2511 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2513 # include "intrpvar.h"
2514 # ifndef USE_THREADS
2515 # include "thrdvar.h"
2522 # define PERLVAR(var,type)
2523 # define PERLVARA(var,n,type)
2524 # define PERLVARI(var,type,init) PL_##var = init;
2525 # define PERLVARIC(var,type,init) PL_##var = init;
2526 # include "intrpvar.h"
2527 # ifndef USE_THREADS
2528 # include "thrdvar.h"
2540 S_init_main_stash(pTHX)
2544 /* Note that strtab is a rather special HV. Assumptions are made
2545 about not iterating on it, and not adding tie magic to it.
2546 It is properly deallocated in perl_destruct() */
2547 PL_strtab = newHV();
2549 MUTEX_INIT(&PL_strtab_mutex);
2551 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2552 hv_ksplit(PL_strtab, 512);
2554 PL_curstash = PL_defstash = newHV();
2555 PL_curstname = newSVpvn("main",4);
2556 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2557 SvREFCNT_dec(GvHV(gv));
2558 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2560 HvNAME(PL_defstash) = savepv("main");
2561 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2562 GvMULTI_on(PL_incgv);
2563 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2564 GvMULTI_on(PL_hintgv);
2565 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2566 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2567 GvMULTI_on(PL_errgv);
2568 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2569 GvMULTI_on(PL_replgv);
2570 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2571 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2572 sv_setpvn(ERRSV, "", 0);
2573 PL_curstash = PL_defstash;
2574 CopSTASH_set(&PL_compiling, PL_defstash);
2575 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2576 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2577 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2578 /* We must init $/ before switches are processed. */
2579 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2583 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2588 PL_origfilename = savepv("-e");
2591 /* if find_script() returns, it returns a malloc()-ed value */
2592 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2594 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2595 char *s = scriptname + 8;
2596 *fdscript = atoi(s);
2600 scriptname = savepv(s + 1);
2601 Safefree(PL_origfilename);
2602 PL_origfilename = scriptname;
2608 Safefree(CopFILE(PL_curcop));
2610 SvREFCNT_dec(CopFILEGV(PL_curcop));
2612 CopFILE_set(PL_curcop, PL_origfilename);
2613 if (strEQ(PL_origfilename,"-"))
2615 if (*fdscript >= 0) {
2616 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2617 #if defined(HAS_FCNTL) && defined(F_SETFD)
2619 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2622 else if (PL_preprocess) {
2623 char *cpp_cfg = CPPSTDIN;
2624 SV *cpp = newSVpvn("",0);
2625 SV *cmd = NEWSV(0,0);
2627 if (strEQ(cpp_cfg, "cppstdin"))
2628 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2629 sv_catpv(cpp, cpp_cfg);
2631 sv_catpvn(sv, "-I", 2);
2632 sv_catpv(sv,PRIVLIB_EXP);
2634 DEBUG_P(PerlIO_printf(Perl_debug_log,
2635 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2636 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2637 #if defined(MSDOS) || defined(WIN32)
2638 Perl_sv_setpvf(aTHX_ cmd, "\
2639 sed %s -e \"/^[^#]/b\" \
2640 -e \"/^#[ ]*include[ ]/b\" \
2641 -e \"/^#[ ]*define[ ]/b\" \
2642 -e \"/^#[ ]*if[ ]/b\" \
2643 -e \"/^#[ ]*ifdef[ ]/b\" \
2644 -e \"/^#[ ]*ifndef[ ]/b\" \
2645 -e \"/^#[ ]*else/b\" \
2646 -e \"/^#[ ]*elif[ ]/b\" \
2647 -e \"/^#[ ]*undef[ ]/b\" \
2648 -e \"/^#[ ]*endif/b\" \
2650 %s | %"SVf" -C %"SVf" %s",
2651 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2654 Perl_sv_setpvf(aTHX_ cmd, "\
2655 %s %s -e '/^[^#]/b' \
2656 -e '/^#[ ]*include[ ]/b' \
2657 -e '/^#[ ]*define[ ]/b' \
2658 -e '/^#[ ]*if[ ]/b' \
2659 -e '/^#[ ]*ifdef[ ]/b' \
2660 -e '/^#[ ]*ifndef[ ]/b' \
2661 -e '/^#[ ]*else/b' \
2662 -e '/^#[ ]*elif[ ]/b' \
2663 -e '/^#[ ]*undef[ ]/b' \
2664 -e '/^#[ ]*endif/b' \
2666 %s | %"SVf" %"SVf" %s",
2668 Perl_sv_setpvf(aTHX_ cmd, "\
2669 %s %s -e '/^[^#]/b' \
2670 -e '/^#[ ]*include[ ]/b' \
2671 -e '/^#[ ]*define[ ]/b' \
2672 -e '/^#[ ]*if[ ]/b' \
2673 -e '/^#[ ]*ifdef[ ]/b' \
2674 -e '/^#[ ]*ifndef[ ]/b' \
2675 -e '/^#[ ]*else/b' \
2676 -e '/^#[ ]*elif[ ]/b' \
2677 -e '/^#[ ]*undef[ ]/b' \
2678 -e '/^#[ ]*endif/b' \
2680 %s | %"SVf" -C %"SVf" %s",
2687 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2689 scriptname, cpp, sv, CPPMINUS);
2690 PL_doextract = FALSE;
2691 #ifdef IAMSUID /* actually, this is caught earlier */
2692 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2694 (void)seteuid(PL_uid); /* musn't stay setuid root */
2697 (void)setreuid((Uid_t)-1, PL_uid);
2699 #ifdef HAS_SETRESUID
2700 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2702 PerlProc_setuid(PL_uid);
2706 if (PerlProc_geteuid() != PL_uid)
2707 Perl_croak(aTHX_ "Can't do seteuid!\n");
2709 #endif /* IAMSUID */
2710 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2714 else if (!*scriptname) {
2715 forbid_setid("program input from stdin");
2716 PL_rsfp = PerlIO_stdin();
2719 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2720 #if defined(HAS_FCNTL) && defined(F_SETFD)
2722 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2727 #ifndef IAMSUID /* in case script is not readable before setuid */
2729 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2730 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2733 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2734 (int)PERL_REVISION, (int)PERL_VERSION,
2735 (int)PERL_SUBVERSION), PL_origargv);
2736 Perl_croak(aTHX_ "Can't do setuid\n");
2742 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2745 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2746 CopFILE(PL_curcop), Strerror(errno));
2752 * I_SYSSTATVFS HAS_FSTATVFS
2754 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2755 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2756 * here so that metaconfig picks them up. */
2760 S_fd_on_nosuid_fs(pTHX_ int fd)
2762 int check_okay = 0; /* able to do all the required sys/libcalls */
2763 int on_nosuid = 0; /* the fd is on a nosuid fs */
2765 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2766 * fstatvfs() is UNIX98.
2767 * fstatfs() is 4.3 BSD.
2768 * ustat()+getmnt() is pre-4.3 BSD.
2769 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2770 * an irrelevant filesystem while trying to reach the right one.
2773 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2775 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2776 defined(HAS_FSTATVFS)
2777 # define FD_ON_NOSUID_CHECK_OKAY
2778 struct statvfs stfs;
2780 check_okay = fstatvfs(fd, &stfs) == 0;
2781 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2782 # endif /* fstatvfs */
2784 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2785 defined(PERL_MOUNT_NOSUID) && \
2786 defined(HAS_FSTATFS) && \
2787 defined(HAS_STRUCT_STATFS) && \
2788 defined(HAS_STRUCT_STATFS_F_FLAGS)
2789 # define FD_ON_NOSUID_CHECK_OKAY
2792 check_okay = fstatfs(fd, &stfs) == 0;
2793 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2794 # endif /* fstatfs */
2796 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2797 defined(PERL_MOUNT_NOSUID) && \
2798 defined(HAS_FSTAT) && \
2799 defined(HAS_USTAT) && \
2800 defined(HAS_GETMNT) && \
2801 defined(HAS_STRUCT_FS_DATA) && \
2803 # define FD_ON_NOSUID_CHECK_OKAY
2806 if (fstat(fd, &fdst) == 0) {
2808 if (ustat(fdst.st_dev, &us) == 0) {
2810 /* NOSTAT_ONE here because we're not examining fields which
2811 * vary between that case and STAT_ONE. */
2812 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2813 size_t cmplen = sizeof(us.f_fname);
2814 if (sizeof(fsd.fd_req.path) < cmplen)
2815 cmplen = sizeof(fsd.fd_req.path);
2816 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2817 fdst.st_dev == fsd.fd_req.dev) {
2819 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2825 # endif /* fstat+ustat+getmnt */
2827 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2828 defined(HAS_GETMNTENT) && \
2829 defined(HAS_HASMNTOPT) && \
2830 defined(MNTOPT_NOSUID)
2831 # define FD_ON_NOSUID_CHECK_OKAY
2832 FILE *mtab = fopen("/etc/mtab", "r");
2833 struct mntent *entry;
2834 struct stat stb, fsb;
2836 if (mtab && (fstat(fd, &stb) == 0)) {
2837 while (entry = getmntent(mtab)) {
2838 if (stat(entry->mnt_dir, &fsb) == 0
2839 && fsb.st_dev == stb.st_dev)
2841 /* found the filesystem */
2843 if (hasmntopt(entry, MNTOPT_NOSUID))
2846 } /* A single fs may well fail its stat(). */
2851 # endif /* getmntent+hasmntopt */
2854 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2857 #endif /* IAMSUID */
2860 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2866 /* do we need to emulate setuid on scripts? */
2868 /* This code is for those BSD systems that have setuid #! scripts disabled
2869 * in the kernel because of a security problem. Merely defining DOSUID
2870 * in perl will not fix that problem, but if you have disabled setuid
2871 * scripts in the kernel, this will attempt to emulate setuid and setgid
2872 * on scripts that have those now-otherwise-useless bits set. The setuid
2873 * root version must be called suidperl or sperlN.NNN. If regular perl
2874 * discovers that it has opened a setuid script, it calls suidperl with
2875 * the same argv that it had. If suidperl finds that the script it has
2876 * just opened is NOT setuid root, it sets the effective uid back to the
2877 * uid. We don't just make perl setuid root because that loses the
2878 * effective uid we had before invoking perl, if it was different from the
2881 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2882 * be defined in suidperl only. suidperl must be setuid root. The
2883 * Configure script will set this up for you if you want it.
2889 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2890 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2891 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2896 #ifndef HAS_SETREUID
2897 /* On this access check to make sure the directories are readable,
2898 * there is actually a small window that the user could use to make
2899 * filename point to an accessible directory. So there is a faint
2900 * chance that someone could execute a setuid script down in a
2901 * non-accessible directory. I don't know what to do about that.
2902 * But I don't think it's too important. The manual lies when
2903 * it says access() is useful in setuid programs.
2905 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2906 Perl_croak(aTHX_ "Permission denied");
2908 /* If we can swap euid and uid, then we can determine access rights
2909 * with a simple stat of the file, and then compare device and
2910 * inode to make sure we did stat() on the same file we opened.
2911 * Then we just have to make sure he or she can execute it.
2914 struct stat tmpstatbuf;
2918 setreuid(PL_euid,PL_uid) < 0
2921 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2924 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2925 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2926 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2927 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2928 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2929 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2930 Perl_croak(aTHX_ "Permission denied");
2932 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2933 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2934 (void)PerlIO_close(PL_rsfp);
2935 Perl_croak(aTHX_ "Permission denied\n");
2939 setreuid(PL_uid,PL_euid) < 0
2941 # if defined(HAS_SETRESUID)
2942 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2945 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2946 Perl_croak(aTHX_ "Can't reswap uid and euid");
2947 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2948 Perl_croak(aTHX_ "Permission denied\n");
2950 #endif /* HAS_SETREUID */
2951 #endif /* IAMSUID */
2953 if (!S_ISREG(PL_statbuf.st_mode))
2954 Perl_croak(aTHX_ "Permission denied");
2955 if (PL_statbuf.st_mode & S_IWOTH)
2956 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2957 PL_doswitches = FALSE; /* -s is insecure in suid */
2958 CopLINE_inc(PL_curcop);
2959 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2960 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2961 Perl_croak(aTHX_ "No #! line");
2962 s = SvPV(PL_linestr,n_a)+2;
2964 while (!isSPACE(*s)) s++;
2965 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2966 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2967 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2968 Perl_croak(aTHX_ "Not a perl script");
2969 while (*s == ' ' || *s == '\t') s++;
2971 * #! arg must be what we saw above. They can invoke it by
2972 * mentioning suidperl explicitly, but they may not add any strange
2973 * arguments beyond what #! says if they do invoke suidperl that way.
2975 len = strlen(validarg);
2976 if (strEQ(validarg," PHOOEY ") ||
2977 strnNE(s,validarg,len) || !isSPACE(s[len]))
2978 Perl_croak(aTHX_ "Args must match #! line");
2981 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2982 PL_euid == PL_statbuf.st_uid)
2984 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2985 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2986 #endif /* IAMSUID */
2988 if (PL_euid) { /* oops, we're not the setuid root perl */
2989 (void)PerlIO_close(PL_rsfp);
2992 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2993 (int)PERL_REVISION, (int)PERL_VERSION,
2994 (int)PERL_SUBVERSION), PL_origargv);
2996 Perl_croak(aTHX_ "Can't do setuid\n");
2999 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3001 (void)setegid(PL_statbuf.st_gid);
3004 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3006 #ifdef HAS_SETRESGID
3007 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3009 PerlProc_setgid(PL_statbuf.st_gid);
3013 if (PerlProc_getegid() != PL_statbuf.st_gid)
3014 Perl_croak(aTHX_ "Can't do setegid!\n");
3016 if (PL_statbuf.st_mode & S_ISUID) {
3017 if (PL_statbuf.st_uid != PL_euid)
3019 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3022 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3024 #ifdef HAS_SETRESUID
3025 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3027 PerlProc_setuid(PL_statbuf.st_uid);
3031 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3032 Perl_croak(aTHX_ "Can't do seteuid!\n");
3034 else if (PL_uid) { /* oops, mustn't run as root */
3036 (void)seteuid((Uid_t)PL_uid);
3039 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3041 #ifdef HAS_SETRESUID
3042 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3044 PerlProc_setuid((Uid_t)PL_uid);
3048 if (PerlProc_geteuid() != PL_uid)
3049 Perl_croak(aTHX_ "Can't do seteuid!\n");
3052 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3053 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3056 else if (PL_preprocess)
3057 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3058 else if (fdscript >= 0)
3059 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3061 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3063 /* We absolutely must clear out any saved ids here, so we */
3064 /* exec the real perl, substituting fd script for scriptname. */
3065 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3066 PerlIO_rewind(PL_rsfp);
3067 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3068 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3069 if (!PL_origargv[which])
3070 Perl_croak(aTHX_ "Permission denied");
3071 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3072 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3073 #if defined(HAS_FCNTL) && defined(F_SETFD)
3074 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3076 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3077 (int)PERL_REVISION, (int)PERL_VERSION,
3078 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3079 Perl_croak(aTHX_ "Can't do setuid\n");
3080 #endif /* IAMSUID */
3082 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3083 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3084 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3085 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3087 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3090 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3091 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3092 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3093 /* not set-id, must be wrapped */
3099 S_find_beginning(pTHX)
3101 register char *s, *s2;
3103 /* skip forward in input to the real script? */
3106 #ifdef MACOS_TRADITIONAL
3107 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3109 while (PL_doextract || gMacPerl_AlwaysExtract) {
3110 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3111 if (!gMacPerl_AlwaysExtract)
3112 Perl_croak(aTHX_ "No Perl script found in input\n");
3114 if (PL_doextract) /* require explicit override ? */
3115 if (!OverrideExtract(PL_origfilename))
3116 Perl_croak(aTHX_ "User aborted script\n");
3118 PL_doextract = FALSE;
3120 /* Pater peccavi, file does not have #! */
3121 PerlIO_rewind(PL_rsfp);
3126 while (PL_doextract) {
3127 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3128 Perl_croak(aTHX_ "No Perl script found in input\n");
3130 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3131 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3132 PL_doextract = FALSE;
3133 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3135 while (*s == ' ' || *s == '\t') s++;
3137 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3138 if (strnEQ(s2-4,"perl",4))
3140 while ((s = moreswitches(s)))
3143 #ifdef MACOS_TRADITIONAL
3154 PL_uid = PerlProc_getuid();
3155 PL_euid = PerlProc_geteuid();
3156 PL_gid = PerlProc_getgid();
3157 PL_egid = PerlProc_getegid();
3159 PL_uid |= PL_gid << 16;
3160 PL_euid |= PL_egid << 16;
3162 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3166 S_forbid_setid(pTHX_ char *s)
3168 if (PL_euid != PL_uid)
3169 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3170 if (PL_egid != PL_gid)
3171 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3175 Perl_init_debugger(pTHX)
3177 HV *ostash = PL_curstash;
3179 PL_curstash = PL_debstash;
3180 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3181 AvREAL_off(PL_dbargs);
3182 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3183 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3184 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3185 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3186 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3187 sv_setiv(PL_DBsingle, 0);
3188 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3189 sv_setiv(PL_DBtrace, 0);
3190 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3191 sv_setiv(PL_DBsignal, 0);
3192 PL_curstash = ostash;
3195 #ifndef STRESS_REALLOC
3196 #define REASONABLE(size) (size)
3198 #define REASONABLE(size) (1) /* unreasonable */
3202 Perl_init_stacks(pTHX)
3204 /* start with 128-item stack and 8K cxstack */
3205 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3206 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3207 PL_curstackinfo->si_type = PERLSI_MAIN;
3208 PL_curstack = PL_curstackinfo->si_stack;
3209 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3211 PL_stack_base = AvARRAY(PL_curstack);
3212 PL_stack_sp = PL_stack_base;
3213 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3215 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3218 PL_tmps_max = REASONABLE(128);
3220 New(54,PL_markstack,REASONABLE(32),I32);
3221 PL_markstack_ptr = PL_markstack;
3222 PL_markstack_max = PL_markstack + REASONABLE(32);
3226 New(54,PL_scopestack,REASONABLE(32),I32);
3227 PL_scopestack_ix = 0;
3228 PL_scopestack_max = REASONABLE(32);
3230 New(54,PL_savestack,REASONABLE(128),ANY);
3231 PL_savestack_ix = 0;
3232 PL_savestack_max = REASONABLE(128);
3234 New(54,PL_retstack,REASONABLE(16),OP*);
3236 PL_retstack_max = REASONABLE(16);
3244 while (PL_curstackinfo->si_next)
3245 PL_curstackinfo = PL_curstackinfo->si_next;
3246 while (PL_curstackinfo) {
3247 PERL_SI *p = PL_curstackinfo->si_prev;
3248 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3249 Safefree(PL_curstackinfo->si_cxstack);
3250 Safefree(PL_curstackinfo);
3251 PL_curstackinfo = p;
3253 Safefree(PL_tmps_stack);
3254 Safefree(PL_markstack);
3255 Safefree(PL_scopestack);
3256 Safefree(PL_savestack);
3257 Safefree(PL_retstack);
3261 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3272 lex_start(PL_linestr);
3274 PL_subname = newSVpvn("main",4);
3278 S_init_predump_symbols(pTHX)
3283 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3284 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3285 GvMULTI_on(PL_stdingv);
3286 io = GvIOp(PL_stdingv);
3287 IoTYPE(io) = IoTYPE_RDONLY;
3288 IoIFP(io) = PerlIO_stdin();
3289 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3291 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3293 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3296 IoTYPE(io) = IoTYPE_WRONLY;
3297 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3299 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3301 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3303 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3304 GvMULTI_on(PL_stderrgv);
3305 io = GvIOp(PL_stderrgv);
3306 IoTYPE(io) = IoTYPE_WRONLY;
3307 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3308 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3310 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3312 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3315 Safefree(PL_osname);
3316 PL_osname = savepv(OSNAME);
3320 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3325 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3326 char **dup_env_base = 0;
3327 int dup_env_count = 0;
3330 argc--,argv++; /* skip name of script */
3331 if (PL_doswitches) {
3332 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3335 if (argv[0][1] == '-' && !argv[0][2]) {
3339 if ((s = strchr(argv[0], '='))) {
3341 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3344 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3347 PL_toptarget = NEWSV(0,0);
3348 sv_upgrade(PL_toptarget, SVt_PVFM);
3349 sv_setpvn(PL_toptarget, "", 0);
3350 PL_bodytarget = NEWSV(0,0);
3351 sv_upgrade(PL_bodytarget, SVt_PVFM);
3352 sv_setpvn(PL_bodytarget, "", 0);
3353 PL_formtarget = PL_bodytarget;
3356 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3357 #ifdef MACOS_TRADITIONAL
3358 /* $0 is not majick on a Mac */
3359 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3361 sv_setpv(GvSV(tmpgv),PL_origfilename);
3362 magicname("0", "0", 1);
3365 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3367 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3369 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3371 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3372 GvMULTI_on(PL_argvgv);
3373 (void)gv_AVadd(PL_argvgv);
3374 av_clear(GvAVn(PL_argvgv));
3375 for (; argc > 0; argc--,argv++) {
3376 SV *sv = newSVpv(argv[0],0);
3377 av_push(GvAVn(PL_argvgv),sv);
3378 if (PL_widesyscalls)
3379 (void)sv_utf8_decode(sv);
3382 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3384 GvMULTI_on(PL_envgv);
3385 hv = GvHVn(PL_envgv);
3386 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3387 #ifdef USE_ENVIRON_ARRAY
3388 /* Note that if the supplied env parameter is actually a copy
3389 of the global environ then it may now point to free'd memory
3390 if the environment has been modified since. To avoid this
3391 problem we treat env==NULL as meaning 'use the default'
3396 environ[0] = Nullch;
3397 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3400 for (env_base = env; *env; env++)
3402 if ((dup_env_base = (char **)
3403 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
3405 for (env = env_base, dup_env = dup_env_base;
3408 /* With environ one needs to use safesysmalloc(). */
3409 *dup_env = safesysmalloc(strlen(*env) + 1);
3410 (void)strcpy(*dup_env, *env);
3416 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3417 for (; *env; env++) {
3418 if (!(s = strchr(*env,'=')))
3424 sv = newSVpv(s--,0);
3425 (void)hv_store(hv, *env, s - *env, sv, 0);
3428 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3431 for (dup_env = dup_env_base; *dup_env; dup_env++)
3432 safesysfree(*dup_env);
3433 safesysfree(dup_env_base);
3435 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3436 #endif /* USE_ENVIRON_ARRAY */
3437 #ifdef DYNAMIC_ENV_FETCH
3438 HvNAME(hv) = savepv(ENV_HV_NAME);
3442 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3443 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3447 S_init_perllib(pTHX)
3452 s = PerlEnv_getenv("PERL5LIB");
3454 incpush(s, TRUE, TRUE);
3456 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3458 /* Treat PERL5?LIB as a possible search list logical name -- the
3459 * "natural" VMS idiom for a Unix path string. We allow each
3460 * element to be a set of |-separated directories for compatibility.
3464 if (my_trnlnm("PERL5LIB",buf,0))
3465 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3467 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3471 /* Use the ~-expanded versions of APPLLIB (undocumented),
3472 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3475 incpush(APPLLIB_EXP, TRUE, TRUE);
3479 incpush(ARCHLIB_EXP, FALSE, FALSE);
3481 #ifdef MACOS_TRADITIONAL
3483 struct stat tmpstatbuf;
3484 SV * privdir = NEWSV(55, 0);
3485 char * macperl = PerlEnv_getenv("MACPERL");
3490 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3491 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3492 incpush(SvPVX(privdir), TRUE, FALSE);
3493 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3494 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3495 incpush(SvPVX(privdir), TRUE, FALSE);
3497 SvREFCNT_dec(privdir);
3500 incpush(":", FALSE, FALSE);
3503 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3506 incpush(PRIVLIB_EXP, TRUE, FALSE);
3508 incpush(PRIVLIB_EXP, FALSE, FALSE);
3512 /* sitearch is always relative to sitelib on Windows for
3513 * DLL-based path intuition to work correctly */
3514 # if !defined(WIN32)
3515 incpush(SITEARCH_EXP, FALSE, FALSE);
3521 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3523 incpush(SITELIB_EXP, FALSE, FALSE);
3527 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3528 incpush(SITELIB_STEM, FALSE, TRUE);
3531 #ifdef PERL_VENDORARCH_EXP
3532 /* vendorarch is always relative to vendorlib on Windows for
3533 * DLL-based path intuition to work correctly */
3534 # if !defined(WIN32)
3535 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3539 #ifdef PERL_VENDORLIB_EXP
3541 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3543 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3547 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3548 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3551 #ifdef PERL_OTHERLIBDIRS
3552 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3556 incpush(".", FALSE, FALSE);
3557 #endif /* MACOS_TRADITIONAL */
3560 #if defined(DOSISH) || defined(EPOC)
3561 # define PERLLIB_SEP ';'
3564 # define PERLLIB_SEP '|'
3566 # if defined(MACOS_TRADITIONAL)
3567 # define PERLLIB_SEP ','
3569 # define PERLLIB_SEP ':'
3573 #ifndef PERLLIB_MANGLE
3574 # define PERLLIB_MANGLE(s,n) (s)
3578 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3580 SV *subdir = Nullsv;
3585 if (addsubdirs || addoldvers) {
3586 subdir = sv_newmortal();
3589 /* Break at all separators */
3591 SV *libdir = NEWSV(55,0);
3594 /* skip any consecutive separators */
3595 while ( *p == PERLLIB_SEP ) {
3596 /* Uncomment the next line for PATH semantics */
3597 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3601 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3602 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3607 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3608 p = Nullch; /* break out */
3610 #ifdef MACOS_TRADITIONAL
3611 if (!strchr(SvPVX(libdir), ':'))
3612 sv_insert(libdir, 0, 0, ":", 1);
3613 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3614 sv_catpv(libdir, ":");
3618 * BEFORE pushing libdir onto @INC we may first push version- and
3619 * archname-specific sub-directories.
3621 if (addsubdirs || addoldvers) {
3622 #ifdef PERL_INC_VERSION_LIST
3623 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3624 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3625 const char **incver;
3627 struct stat tmpstatbuf;
3632 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3634 while (unix[len-1] == '/') len--; /* Cosmetic */
3635 sv_usepvn(libdir,unix,len);
3638 PerlIO_printf(Perl_error_log,
3639 "Failed to unixify @INC element \"%s\"\n",
3643 #ifdef MACOS_TRADITIONAL
3644 #define PERL_AV_SUFFIX_FMT ""
3645 #define PERL_ARCH_FMT "%s:"
3646 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3648 #define PERL_AV_SUFFIX_FMT "/"
3649 #define PERL_ARCH_FMT "/%s"
3650 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3652 /* .../version/archname if -d .../version/archname */
3653 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3655 (int)PERL_REVISION, (int)PERL_VERSION,
3656 (int)PERL_SUBVERSION, ARCHNAME);
3657 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3658 S_ISDIR(tmpstatbuf.st_mode))
3659 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3661 /* .../version if -d .../version */
3662 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3663 (int)PERL_REVISION, (int)PERL_VERSION,
3664 (int)PERL_SUBVERSION);
3665 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3666 S_ISDIR(tmpstatbuf.st_mode))
3667 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3669 /* .../archname if -d .../archname */
3670 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3671 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3672 S_ISDIR(tmpstatbuf.st_mode))
3673 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3676 #ifdef PERL_INC_VERSION_LIST
3678 for (incver = incverlist; *incver; incver++) {
3679 /* .../xxx if -d .../xxx */
3680 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3681 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3682 S_ISDIR(tmpstatbuf.st_mode))
3683 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3689 /* finally push this lib directory on the end of @INC */
3690 av_push(GvAVn(PL_incgv), libdir);
3695 STATIC struct perl_thread *
3696 S_init_main_thread(pTHX)
3698 #if !defined(PERL_IMPLICIT_CONTEXT)
3699 struct perl_thread *thr;
3703 Newz(53, thr, 1, struct perl_thread);
3704 PL_curcop = &PL_compiling;
3705 thr->interp = PERL_GET_INTERP;
3706 thr->cvcache = newHV();
3707 thr->threadsv = newAV();
3708 /* thr->threadsvp is set when find_threadsv is called */
3709 thr->specific = newAV();
3710 thr->flags = THRf_R_JOINABLE;
3711 MUTEX_INIT(&thr->mutex);
3712 /* Handcraft thrsv similarly to mess_sv */
3713 New(53, PL_thrsv, 1, SV);
3714 Newz(53, xpv, 1, XPV);
3715 SvFLAGS(PL_thrsv) = SVt_PV;
3716 SvANY(PL_thrsv) = (void*)xpv;
3717 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3718 SvPVX(PL_thrsv) = (char*)thr;
3719 SvCUR_set(PL_thrsv, sizeof(thr));
3720 SvLEN_set(PL_thrsv, sizeof(thr));
3721 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3722 thr->oursv = PL_thrsv;
3723 PL_chopset = " \n-";
3726 MUTEX_LOCK(&PL_threads_mutex);
3732 MUTEX_UNLOCK(&PL_threads_mutex);
3734 #ifdef HAVE_THREAD_INTERN
3735 Perl_init_thread_intern(thr);
3738 #ifdef SET_THREAD_SELF
3739 SET_THREAD_SELF(thr);
3741 thr->self = pthread_self();
3742 #endif /* SET_THREAD_SELF */
3746 * These must come after the thread self setting
3747 * because sv_setpvn does SvTAINT and the taint
3748 * fields thread selfness being set.
3750 PL_toptarget = NEWSV(0,0);
3751 sv_upgrade(PL_toptarget, SVt_PVFM);
3752 sv_setpvn(PL_toptarget, "", 0);
3753 PL_bodytarget = NEWSV(0,0);
3754 sv_upgrade(PL_bodytarget, SVt_PVFM);
3755 sv_setpvn(PL_bodytarget, "", 0);
3756 PL_formtarget = PL_bodytarget;
3757 thr->errsv = newSVpvn("", 0);
3758 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3761 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3762 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3763 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3764 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3765 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3767 PL_reginterp_cnt = 0;
3771 #endif /* USE_THREADS */
3774 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3777 line_t oldline = CopLINE(PL_curcop);
3783 while (AvFILL(paramList) >= 0) {
3784 cv = (CV*)av_shift(paramList);
3785 if ((PL_minus_c & 0x10) && (paramList == PL_beginav)) {
3786 /* save PL_beginav for compiler */
3787 if (! PL_beginav_save)
3788 PL_beginav_save = newAV();
3789 av_push(PL_beginav_save, (SV*)cv);
3793 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3794 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3800 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3804 (void)SvPV(atsv, len);
3807 PL_curcop = &PL_compiling;
3808 CopLINE_set(PL_curcop, oldline);
3809 if (paramList == PL_beginav)
3810 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3812 Perl_sv_catpvf(aTHX_ atsv,
3813 "%s failed--call queue aborted",
3814 paramList == PL_checkav ? "CHECK"
3815 : paramList == PL_initav ? "INIT"
3817 while (PL_scopestack_ix > oldscope)
3820 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3827 /* my_exit() was called */
3828 while (PL_scopestack_ix > oldscope)
3831 PL_curstash = PL_defstash;
3832 PL_curcop = &PL_compiling;
3833 CopLINE_set(PL_curcop, oldline);
3835 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3836 if (paramList == PL_beginav)
3837 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3839 Perl_croak(aTHX_ "%s failed--call queue aborted",
3840 paramList == PL_checkav ? "CHECK"
3841 : paramList == PL_initav ? "INIT"
3848 PL_curcop = &PL_compiling;
3849 CopLINE_set(PL_curcop, oldline);
3852 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3860 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3862 S_vcall_list_body(pTHX_ va_list args)
3864 CV *cv = va_arg(args, CV*);
3865 return call_list_body(cv);
3870 S_call_list_body(pTHX_ CV *cv)
3872 PUSHMARK(PL_stack_sp);
3873 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3878 Perl_my_exit(pTHX_ U32 status)
3880 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3881 thr, (unsigned long) status));
3890 STATUS_NATIVE_SET(status);
3897 Perl_my_failure_exit(pTHX)
3900 if (vaxc$errno & 1) {
3901 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3902 STATUS_NATIVE_SET(44);
3905 if (!vaxc$errno && errno) /* unlikely */
3906 STATUS_NATIVE_SET(44);
3908 STATUS_NATIVE_SET(vaxc$errno);
3913 STATUS_POSIX_SET(errno);
3915 exitstatus = STATUS_POSIX >> 8;
3916 if (exitstatus & 255)
3917 STATUS_POSIX_SET(exitstatus);
3919 STATUS_POSIX_SET(255);
3926 S_my_exit_jump(pTHX)
3928 register PERL_CONTEXT *cx;
3933 SvREFCNT_dec(PL_e_script);
3934 PL_e_script = Nullsv;
3937 POPSTACK_TO(PL_mainstack);
3938 if (cxstack_ix >= 0) {
3941 POPBLOCK(cx,PL_curpm);
3953 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3956 p = SvPVX(PL_e_script);
3957 nl = strchr(p, '\n');
3958 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3960 filter_del(read_e_script);
3963 sv_catpvn(buf_sv, p, nl-p);
3964 sv_chop(PL_e_script, nl);