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)
820 # if defined(WIN32) || defined(NETWARE)
821 # if defined(PERL_IMPLICIT_SYS)
823 void *host = nw_internal_host;
825 void *host = w32_internal_host;
828 if (PerlProc_lasthost()) {
834 nw5_delete_internal_host(host);
836 win32_delete_internal_host(host);
849 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
851 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
852 PL_exitlist[PL_exitlistlen].fn = fn;
853 PL_exitlist[PL_exitlistlen].ptr = ptr;
858 =for apidoc perl_parse
860 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
866 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
875 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
878 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
879 setuid perl scripts securely.\n");
883 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
884 _dyld_lookup_and_bind
885 ("__environ", (unsigned long *) &environ_pointer, NULL);
890 #ifdef USE_ENVIRON_ARRAY
891 PL_origenviron = environ;
896 /* Come here if running an undumped a.out. */
898 PL_origfilename = savepv(argv[0]);
899 PL_do_undump = FALSE;
900 cxstack_ix = -1; /* start label stack again */
902 init_postdump_symbols(argc,argv,env);
907 PL_curpad = AvARRAY(PL_comppad);
908 op_free(PL_main_root);
909 PL_main_root = Nullop;
911 PL_main_start = Nullop;
912 SvREFCNT_dec(PL_main_cv);
916 oldscope = PL_scopestack_ix;
917 PL_dowarn = G_WARN_OFF;
919 #ifdef PERL_FLEXIBLE_EXCEPTIONS
920 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
926 #ifndef PERL_FLEXIBLE_EXCEPTIONS
927 parse_body(env,xsinit);
930 call_list(oldscope, PL_checkav);
937 /* my_exit() was called */
938 while (PL_scopestack_ix > oldscope)
941 PL_curstash = PL_defstash;
943 call_list(oldscope, PL_checkav);
944 ret = STATUS_NATIVE_EXPORT;
947 PerlIO_printf(Perl_error_log, "panic: top_env\n");
955 #ifdef PERL_FLEXIBLE_EXCEPTIONS
957 S_vparse_body(pTHX_ va_list args)
959 char **env = va_arg(args, char**);
960 XSINIT_t xsinit = va_arg(args, XSINIT_t);
962 return parse_body(env, xsinit);
967 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
969 int argc = PL_origargc;
970 char **argv = PL_origargv;
971 char *scriptname = NULL;
973 VOL bool dosearch = FALSE;
978 char *popts, *cddir = Nullch;
980 sv_setpvn(PL_linestr,"",0);
981 sv = newSVpvn("",0); /* first used for -I flags */
985 for (argc--,argv++; argc > 0; argc--,argv++) {
986 if (argv[0][0] != '-' || !argv[0][1])
990 validarg = " PHOOEY ";
999 win32_argv2utf8(argc-1, argv+1);
1002 #ifndef PERL_STRICT_CR
1026 if ((s = moreswitches(s)))
1036 #ifdef MACOS_TRADITIONAL
1037 /* ignore -e for Dev:Pseudo argument */
1038 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1041 if (PL_euid != PL_uid || PL_egid != PL_gid)
1042 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1044 PL_e_script = newSVpvn("",0);
1045 filter_add(read_e_script, NULL);
1048 sv_catpv(PL_e_script, s);
1050 sv_catpv(PL_e_script, argv[1]);
1054 Perl_croak(aTHX_ "No code specified for -e");
1055 sv_catpv(PL_e_script, "\n");
1058 case 'I': /* -I handled both here and in moreswitches() */
1060 if (!*++s && (s=argv[1]) != Nullch) {
1065 STRLEN len = strlen(s);
1066 p = savepvn(s, len);
1067 incpush(p, TRUE, TRUE);
1068 sv_catpvn(sv, "-I", 2);
1069 sv_catpvn(sv, p, len);
1070 sv_catpvn(sv, " ", 1);
1074 Perl_croak(aTHX_ "No directory specified for -I");
1078 PL_preprocess = TRUE;
1088 PL_preambleav = newAV();
1089 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1091 PL_Sv = newSVpv("print myconfig();",0);
1093 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1095 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1097 sv_catpv(PL_Sv,"\" Compile-time options:");
1099 sv_catpv(PL_Sv," DEBUGGING");
1101 # ifdef MULTIPLICITY
1102 sv_catpv(PL_Sv," MULTIPLICITY");
1105 sv_catpv(PL_Sv," USE_THREADS");
1107 # ifdef USE_ITHREADS
1108 sv_catpv(PL_Sv," USE_ITHREADS");
1110 # ifdef USE_64_BIT_INT
1111 sv_catpv(PL_Sv," USE_64_BIT_INT");
1113 # ifdef USE_64_BIT_ALL
1114 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1116 # ifdef USE_LONG_DOUBLE
1117 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1119 # ifdef USE_LARGE_FILES
1120 sv_catpv(PL_Sv," USE_LARGE_FILES");
1123 sv_catpv(PL_Sv," USE_SOCKS");
1126 sv_catpv(PL_Sv," PERL_OBJECT");
1128 # ifdef PERL_IMPLICIT_CONTEXT
1129 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1131 # ifdef PERL_IMPLICIT_SYS
1132 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1134 sv_catpv(PL_Sv,"\\n\",");
1136 #if defined(LOCAL_PATCH_COUNT)
1137 if (LOCAL_PATCH_COUNT > 0) {
1139 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1140 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1141 if (PL_localpatches[i])
1142 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1146 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1149 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1151 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1154 sv_catpv(PL_Sv, "; \
1156 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1157 print \" \\%ENV:\\n @env\\n\" if @env; \
1158 print \" \\@INC:\\n @INC\\n\";");
1161 PL_Sv = newSVpv("config_vars(qw(",0);
1162 sv_catpv(PL_Sv, ++s);
1163 sv_catpv(PL_Sv, "))");
1166 av_push(PL_preambleav, PL_Sv);
1167 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1170 PL_doextract = TRUE;
1178 if (!*++s || isSPACE(*s)) {
1182 /* catch use of gnu style long options */
1183 if (strEQ(s, "version")) {
1187 if (strEQ(s, "help")) {
1194 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1200 #ifndef SECURE_INTERNAL_GETENV
1203 (popts = PerlEnv_getenv("PERL5OPT")))
1208 if (*s == '-' && *(s+1) == 'T')
1223 if (!strchr("DIMUdmw", *s))
1224 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1237 scriptname = argv[0];
1240 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1242 else if (scriptname == Nullch) {
1244 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1252 open_script(scriptname,dosearch,sv,&fdscript);
1254 validate_suid(validarg, scriptname,fdscript);
1257 #if defined(SIGCHLD) || defined(SIGCLD)
1260 # define SIGCHLD SIGCLD
1262 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1263 if (sigstate == SIG_IGN) {
1264 if (ckWARN(WARN_SIGNAL))
1265 Perl_warner(aTHX_ WARN_SIGNAL,
1266 "Can't ignore signal CHLD, forcing to default");
1267 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1273 #ifdef MACOS_TRADITIONAL
1274 if (PL_doextract || gMacPerl_AlwaysExtract) {
1279 if (cddir && PerlDir_chdir(cddir) < 0)
1280 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1284 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1285 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1286 CvUNIQUE_on(PL_compcv);
1288 PL_comppad = newAV();
1289 av_push(PL_comppad, Nullsv);
1290 PL_curpad = AvARRAY(PL_comppad);
1291 PL_comppad_name = newAV();
1292 PL_comppad_name_fill = 0;
1293 PL_min_intro_pending = 0;
1296 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1297 PL_curpad[0] = (SV*)newAV();
1298 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1299 CvOWNER(PL_compcv) = 0;
1300 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1301 MUTEX_INIT(CvMUTEXP(PL_compcv));
1302 #endif /* USE_THREADS */
1304 comppadlist = newAV();
1305 AvREAL_off(comppadlist);
1306 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1307 av_store(comppadlist, 1, (SV*)PL_comppad);
1308 CvPADLIST(PL_compcv) = comppadlist;
1311 boot_core_UNIVERSAL();
1313 boot_core_xsutils();
1317 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1319 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1325 # ifdef HAS_SOCKS5_INIT
1326 socks5_init(argv[0]);
1332 init_predump_symbols();
1333 /* init_postdump_symbols not currently designed to be called */
1334 /* more than once (ENV isn't cleared first, for example) */
1335 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1337 init_postdump_symbols(argc,argv,env);
1341 /* now parse the script */
1343 SETERRNO(0,SS$_NORMAL);
1345 #ifdef MACOS_TRADITIONAL
1346 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1348 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1350 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1351 MacPerl_MPWFileName(PL_origfilename));
1355 if (yyparse() || PL_error_count) {
1357 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1359 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1364 CopLINE_set(PL_curcop, 0);
1365 PL_curstash = PL_defstash;
1366 PL_preprocess = FALSE;
1368 SvREFCNT_dec(PL_e_script);
1369 PL_e_script = Nullsv;
1372 /* now that script is parsed, we can modify record separator */
1373 SvREFCNT_dec(PL_rs);
1374 PL_rs = SvREFCNT_inc(PL_nrs);
1375 sv_setsv(get_sv("/", TRUE), PL_rs);
1380 SAVECOPFILE(PL_curcop);
1381 SAVECOPLINE(PL_curcop);
1382 gv_check(PL_defstash);
1389 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1390 dump_mstats("after compilation:");
1399 =for apidoc perl_run
1401 Tells a Perl interpreter to run. See L<perlembed>.
1416 oldscope = PL_scopestack_ix;
1418 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1420 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1426 cxstack_ix = -1; /* start context stack again */
1428 case 0: /* normal completion */
1429 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1434 case 2: /* my_exit() */
1435 while (PL_scopestack_ix > oldscope)
1438 PL_curstash = PL_defstash;
1439 if (PL_endav && !PL_minus_c)
1440 call_list(oldscope, PL_endav);
1442 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1443 dump_mstats("after execution: ");
1445 ret = STATUS_NATIVE_EXPORT;
1449 POPSTACK_TO(PL_mainstack);
1452 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1462 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1464 S_vrun_body(pTHX_ va_list args)
1466 I32 oldscope = va_arg(args, I32);
1468 return run_body(oldscope);
1474 S_run_body(pTHX_ I32 oldscope)
1476 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1477 PL_sawampersand ? "Enabling" : "Omitting"));
1479 if (!PL_restartop) {
1480 DEBUG_x(dump_all());
1481 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1482 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1486 #ifdef MACOS_TRADITIONAL
1487 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1489 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1493 if (PERLDB_SINGLE && PL_DBsingle)
1494 sv_setiv(PL_DBsingle, 1);
1496 call_list(oldscope, PL_initav);
1502 PL_op = PL_restartop;
1506 else if (PL_main_start) {
1507 CvDEPTH(PL_main_cv) = 1;
1508 PL_op = PL_main_start;
1518 =for apidoc p||get_sv
1520 Returns the SV of the specified Perl scalar. If C<create> is set and the
1521 Perl variable does not exist then it will be created. If C<create> is not
1522 set and the variable does not exist then NULL is returned.
1528 Perl_get_sv(pTHX_ const char *name, I32 create)
1532 if (name[1] == '\0' && !isALPHA(name[0])) {
1533 PADOFFSET tmp = find_threadsv(name);
1534 if (tmp != NOT_IN_PAD)
1535 return THREADSV(tmp);
1537 #endif /* USE_THREADS */
1538 gv = gv_fetchpv(name, create, SVt_PV);
1545 =for apidoc p||get_av
1547 Returns the AV of the specified Perl array. If C<create> is set and the
1548 Perl variable does not exist then it will be created. If C<create> is not
1549 set and the variable does not exist then NULL is returned.
1555 Perl_get_av(pTHX_ const char *name, I32 create)
1557 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1566 =for apidoc p||get_hv
1568 Returns the HV of the specified Perl hash. If C<create> is set and the
1569 Perl variable does not exist then it will be created. If C<create> is not
1570 set and the variable does not exist then NULL is returned.
1576 Perl_get_hv(pTHX_ const char *name, I32 create)
1578 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1587 =for apidoc p||get_cv
1589 Returns the CV of the specified Perl subroutine. If C<create> is set and
1590 the Perl subroutine does not exist then it will be declared (which has the
1591 same effect as saying C<sub name;>). If C<create> is not set and the
1592 subroutine does not exist then NULL is returned.
1598 Perl_get_cv(pTHX_ const char *name, I32 create)
1600 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1601 /* XXX unsafe for threads if eval_owner isn't held */
1602 /* XXX this is probably not what they think they're getting.
1603 * It has the same effect as "sub name;", i.e. just a forward
1605 if (create && !GvCVu(gv))
1606 return newSUB(start_subparse(FALSE, 0),
1607 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1615 /* Be sure to refetch the stack pointer after calling these routines. */
1618 =for apidoc p||call_argv
1620 Performs a callback to the specified Perl sub. See L<perlcall>.
1626 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1628 /* See G_* flags in cop.h */
1629 /* null terminated arg list */
1636 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1641 return call_pv(sub_name, flags);
1645 =for apidoc p||call_pv
1647 Performs a callback to the specified Perl sub. See L<perlcall>.
1653 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1654 /* name of the subroutine */
1655 /* See G_* flags in cop.h */
1657 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1661 =for apidoc p||call_method
1663 Performs a callback to the specified Perl method. The blessed object must
1664 be on the stack. See L<perlcall>.
1670 Perl_call_method(pTHX_ const char *methname, I32 flags)
1671 /* name of the subroutine */
1672 /* See G_* flags in cop.h */
1674 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1677 /* May be called with any of a CV, a GV, or an SV containing the name. */
1679 =for apidoc p||call_sv
1681 Performs a callback to the Perl sub whose name is in the SV. See
1688 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1689 /* See G_* flags in cop.h */
1692 LOGOP myop; /* fake syntax tree node */
1695 volatile I32 retval = 0;
1697 bool oldcatch = CATCH_GET;
1702 if (flags & G_DISCARD) {
1707 Zero(&myop, 1, LOGOP);
1708 myop.op_next = Nullop;
1709 if (!(flags & G_NOARGS))
1710 myop.op_flags |= OPf_STACKED;
1711 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1712 (flags & G_ARRAY) ? OPf_WANT_LIST :
1717 EXTEND(PL_stack_sp, 1);
1718 *++PL_stack_sp = sv;
1720 oldscope = PL_scopestack_ix;
1722 if (PERLDB_SUB && PL_curstash != PL_debstash
1723 /* Handle first BEGIN of -d. */
1724 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1725 /* Try harder, since this may have been a sighandler, thus
1726 * curstash may be meaningless. */
1727 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1728 && !(flags & G_NODEBUG))
1729 PL_op->op_private |= OPpENTERSUB_DB;
1731 if (flags & G_METHOD) {
1732 Zero(&method_op, 1, UNOP);
1733 method_op.op_next = PL_op;
1734 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1735 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1736 PL_op = (OP*)&method_op;
1739 if (!(flags & G_EVAL)) {
1741 call_body((OP*)&myop, FALSE);
1742 retval = PL_stack_sp - (PL_stack_base + oldmark);
1743 CATCH_SET(oldcatch);
1746 myop.op_other = (OP*)&myop;
1748 /* we're trying to emulate pp_entertry() here */
1750 register PERL_CONTEXT *cx;
1751 I32 gimme = GIMME_V;
1756 push_return(Nullop);
1757 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1759 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1761 PL_in_eval = EVAL_INEVAL;
1762 if (flags & G_KEEPERR)
1763 PL_in_eval |= EVAL_KEEPERR;
1769 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1771 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1778 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1780 call_body((OP*)&myop, FALSE);
1782 retval = PL_stack_sp - (PL_stack_base + oldmark);
1783 if (!(flags & G_KEEPERR))
1790 /* my_exit() was called */
1791 PL_curstash = PL_defstash;
1794 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1795 Perl_croak(aTHX_ "Callback called exit");
1800 PL_op = PL_restartop;
1804 PL_stack_sp = PL_stack_base + oldmark;
1805 if (flags & G_ARRAY)
1809 *++PL_stack_sp = &PL_sv_undef;
1814 if (PL_scopestack_ix > oldscope) {
1818 register PERL_CONTEXT *cx;
1830 if (flags & G_DISCARD) {
1831 PL_stack_sp = PL_stack_base + oldmark;
1840 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1842 S_vcall_body(pTHX_ va_list args)
1844 OP *myop = va_arg(args, OP*);
1845 int is_eval = va_arg(args, int);
1847 call_body(myop, is_eval);
1853 S_call_body(pTHX_ OP *myop, int is_eval)
1855 if (PL_op == myop) {
1857 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1859 PL_op = Perl_pp_entersub(aTHX); /* this does */
1865 /* Eval a string. The G_EVAL flag is always assumed. */
1868 =for apidoc p||eval_sv
1870 Tells Perl to C<eval> the string in the SV.
1876 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1878 /* See G_* flags in cop.h */
1881 UNOP myop; /* fake syntax tree node */
1882 volatile I32 oldmark = SP - PL_stack_base;
1883 volatile I32 retval = 0;
1889 if (flags & G_DISCARD) {
1896 Zero(PL_op, 1, UNOP);
1897 EXTEND(PL_stack_sp, 1);
1898 *++PL_stack_sp = sv;
1899 oldscope = PL_scopestack_ix;
1901 if (!(flags & G_NOARGS))
1902 myop.op_flags = OPf_STACKED;
1903 myop.op_next = Nullop;
1904 myop.op_type = OP_ENTEREVAL;
1905 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1906 (flags & G_ARRAY) ? OPf_WANT_LIST :
1908 if (flags & G_KEEPERR)
1909 myop.op_flags |= OPf_SPECIAL;
1911 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1913 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1920 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1922 call_body((OP*)&myop,TRUE);
1924 retval = PL_stack_sp - (PL_stack_base + oldmark);
1925 if (!(flags & G_KEEPERR))
1932 /* my_exit() was called */
1933 PL_curstash = PL_defstash;
1936 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1937 Perl_croak(aTHX_ "Callback called exit");
1942 PL_op = PL_restartop;
1946 PL_stack_sp = PL_stack_base + oldmark;
1947 if (flags & G_ARRAY)
1951 *++PL_stack_sp = &PL_sv_undef;
1957 if (flags & G_DISCARD) {
1958 PL_stack_sp = PL_stack_base + oldmark;
1968 =for apidoc p||eval_pv
1970 Tells Perl to C<eval> the given string and return an SV* result.
1976 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1979 SV* sv = newSVpv(p, 0);
1981 eval_sv(sv, G_SCALAR);
1988 if (croak_on_error && SvTRUE(ERRSV)) {
1990 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1996 /* Require a module. */
1999 =for apidoc p||require_pv
2001 Tells Perl to C<require> the file named by the string argument. It is
2002 analogous to the Perl code C<eval "require '$file'">. It's even
2003 implemented that way; consider using Perl_load_module instead.
2008 Perl_require_pv(pTHX_ const char *pv)
2012 PUSHSTACKi(PERLSI_REQUIRE);
2014 sv = sv_newmortal();
2015 sv_setpv(sv, "require '");
2018 eval_sv(sv, G_DISCARD);
2024 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2028 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2029 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2033 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2035 /* This message really ought to be max 23 lines.
2036 * Removed -h because the user already knows that opton. Others? */
2038 static char *usage_msg[] = {
2039 "-0[octal] specify record separator (\\0, if no argument)",
2040 "-a autosplit mode with -n or -p (splits $_ into @F)",
2041 "-C enable native wide character system interfaces",
2042 "-c check syntax only (runs BEGIN and CHECK blocks)",
2043 "-d[:debugger] run program under debugger",
2044 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2045 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2046 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2047 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2048 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2049 "-l[octal] enable line ending processing, specifies line terminator",
2050 "-[mM][-]module execute `use/no module...' before executing program",
2051 "-n assume 'while (<>) { ... }' loop around program",
2052 "-p assume loop like -n but print line also, like sed",
2053 "-P run program through C preprocessor before compilation",
2054 "-s enable rudimentary parsing for switches after programfile",
2055 "-S look for programfile using PATH environment variable",
2056 "-T enable tainting checks",
2057 "-u dump core after parsing program",
2058 "-U allow unsafe operations",
2059 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2060 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2061 "-w enable many useful warnings (RECOMMENDED)",
2062 "-W enable all warnings",
2063 "-X disable all warnings",
2064 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2068 char **p = usage_msg;
2070 PerlIO_printf(PerlIO_stdout(),
2071 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2074 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2077 /* This routine handles any switches that can be given during run */
2080 Perl_moreswitches(pTHX_ char *s)
2088 numlen = 0; /* disallow underscores */
2089 rschar = (U32)scan_oct(s, 4, &numlen);
2090 SvREFCNT_dec(PL_nrs);
2091 if (rschar & ~((U8)~0))
2092 PL_nrs = &PL_sv_undef;
2093 else if (!rschar && numlen >= 2)
2094 PL_nrs = newSVpvn("", 0);
2097 PL_nrs = newSVpvn(&ch, 1);
2102 PL_widesyscalls = TRUE;
2107 PL_splitstr = savepv(s + 1);
2121 /* The following permits -d:Mod to accepts arguments following an =
2122 in the fashion that -MSome::Mod does. */
2123 if (*s == ':' || *s == '=') {
2126 sv = newSVpv("use Devel::", 0);
2128 /* We now allow -d:Module=Foo,Bar */
2129 while(isALNUM(*s) || *s==':') ++s;
2131 sv_catpv(sv, start);
2133 sv_catpvn(sv, start, s-start);
2134 sv_catpv(sv, " split(/,/,q{");
2139 my_setenv("PERL5DB", SvPV(sv, PL_na));
2142 PL_perldb = PERLDB_ALL;
2150 if (isALPHA(s[1])) {
2151 /* if adding extra options, remember to update DEBUG_MASK */
2152 static char debopts[] = "psltocPmfrxuLHXDSTR";
2155 for (s++; *s && (d = strchr(debopts,*s)); s++)
2156 PL_debug |= 1 << (d - debopts);
2159 PL_debug = atoi(s+1);
2160 for (s++; isDIGIT(*s); s++) ;
2162 PL_debug |= DEBUG_TOP_FLAG;
2164 if (ckWARN_d(WARN_DEBUGGING))
2165 Perl_warner(aTHX_ WARN_DEBUGGING,
2166 "Recompile perl with -DDEBUGGING to use -D switch\n");
2167 for (s++; isALNUM(*s); s++) ;
2173 usage(PL_origargv[0]);
2177 Safefree(PL_inplace);
2178 PL_inplace = savepv(s+1);
2180 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2183 if (*s == '-') /* Additional switches on #! line. */
2187 case 'I': /* -I handled both here and in parse_perl() */
2190 while (*s && isSPACE(*s))
2195 /* ignore trailing spaces (possibly followed by other switches) */
2197 for (e = p; *e && !isSPACE(*e); e++) ;
2201 } while (*p && *p != '-');
2202 e = savepvn(s, e-s);
2203 incpush(e, TRUE, TRUE);
2210 Perl_croak(aTHX_ "No directory specified for -I");
2216 SvREFCNT_dec(PL_ors_sv);
2220 PL_ors_sv = newSVpvn("\n",1);
2221 numlen = 0; /* disallow underscores */
2222 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2226 if (RsPARA(PL_nrs)) {
2227 PL_ors_sv = newSVpvn("\n\n",2);
2230 PL_ors_sv = newSVsv(PL_nrs);
2235 forbid_setid("-M"); /* XXX ? */
2238 forbid_setid("-m"); /* XXX ? */
2243 /* -M-foo == 'no foo' */
2244 if (*s == '-') { use = "no "; ++s; }
2245 sv = newSVpv(use,0);
2247 /* We allow -M'Module qw(Foo Bar)' */
2248 while(isALNUM(*s) || *s==':') ++s;
2250 sv_catpv(sv, start);
2251 if (*(start-1) == 'm') {
2253 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2254 sv_catpv( sv, " ()");
2258 Perl_croak(aTHX_ "Module name required with -%c option",
2260 sv_catpvn(sv, start, s-start);
2261 sv_catpv(sv, " split(/,/,q{");
2267 PL_preambleav = newAV();
2268 av_push(PL_preambleav, sv);
2271 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2283 PL_doswitches = TRUE;
2288 Perl_croak(aTHX_ "Too late for \"-T\" option");
2292 #ifdef MACOS_TRADITIONAL
2293 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2295 PL_do_undump = TRUE;
2304 PerlIO_printf(PerlIO_stdout(),
2305 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2306 PL_patchlevel, ARCHNAME));
2308 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2309 PerlIO_printf(PerlIO_stdout(),
2310 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2311 PerlIO_printf(PerlIO_stdout(),
2312 Perl_form(aTHX_ " built under %s at %s %s\n",
2313 OSNAME, __DATE__, __TIME__));
2314 PerlIO_printf(PerlIO_stdout(),
2315 Perl_form(aTHX_ " OS Specific Release: %s\n",
2319 #if defined(LOCAL_PATCH_COUNT)
2320 if (LOCAL_PATCH_COUNT > 0)
2321 PerlIO_printf(PerlIO_stdout(),
2322 "\n(with %d registered patch%s, "
2323 "see perl -V for more detail)",
2324 (int)LOCAL_PATCH_COUNT,
2325 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2328 PerlIO_printf(PerlIO_stdout(),
2329 "\n\nCopyright 1987-2001, Larry Wall\n");
2330 #ifdef MACOS_TRADITIONAL
2331 PerlIO_printf(PerlIO_stdout(),
2332 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
2335 PerlIO_printf(PerlIO_stdout(),
2336 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2339 PerlIO_printf(PerlIO_stdout(),
2340 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2341 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2344 PerlIO_printf(PerlIO_stdout(),
2345 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2346 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2349 PerlIO_printf(PerlIO_stdout(),
2350 "atariST series port, ++jrb bammi@cadence.com\n");
2353 PerlIO_printf(PerlIO_stdout(),
2354 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2357 PerlIO_printf(PerlIO_stdout(),
2358 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
2361 PerlIO_printf(PerlIO_stdout(),
2362 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2365 PerlIO_printf(PerlIO_stdout(),
2366 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2369 PerlIO_printf(PerlIO_stdout(),
2370 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2373 PerlIO_printf(PerlIO_stdout(),
2374 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2377 PerlIO_printf(PerlIO_stdout(),
2378 "MiNT port by Guido Flohr, 1997-1999\n");
2381 PerlIO_printf(PerlIO_stdout(),
2382 "EPOC port by Olaf Flebbe, 1999-2000\n");
2384 #ifdef BINARY_BUILD_NOTICE
2385 BINARY_BUILD_NOTICE;
2387 PerlIO_printf(PerlIO_stdout(),
2389 Perl may be copied only under the terms of either the Artistic License or the\n\
2390 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2391 Complete documentation for Perl, including FAQ lists, should be found on\n\
2392 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2393 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2396 if (! (PL_dowarn & G_WARN_ALL_MASK))
2397 PL_dowarn |= G_WARN_ON;
2401 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2402 PL_compiling.cop_warnings = pWARN_ALL ;
2406 PL_dowarn = G_WARN_ALL_OFF;
2407 PL_compiling.cop_warnings = pWARN_NONE ;
2412 if (s[1] == '-') /* Additional switches on #! line. */
2417 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2423 #ifdef ALTERNATE_SHEBANG
2424 case 'S': /* OS/2 needs -S on "extproc" line. */
2432 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2437 /* compliments of Tom Christiansen */
2439 /* unexec() can be found in the Gnu emacs distribution */
2440 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2443 Perl_my_unexec(pTHX)
2451 prog = newSVpv(BIN_EXP, 0);
2452 sv_catpv(prog, "/perl");
2453 file = newSVpv(PL_origfilename, 0);
2454 sv_catpv(file, ".perldump");
2456 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2457 /* unexec prints msg to stderr in case of failure */
2458 PerlProc_exit(status);
2461 # include <lib$routines.h>
2462 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2464 ABORT(); /* for use with undump */
2469 /* initialize curinterp */
2474 #ifdef PERL_OBJECT /* XXX kludge */
2477 PL_chopset = " \n-"; \
2478 PL_copline = NOLINE; \
2479 PL_curcop = &PL_compiling;\
2480 PL_curcopdb = NULL; \
2482 PL_dumpindent = 4; \
2483 PL_laststatval = -1; \
2484 PL_laststype = OP_STAT; \
2485 PL_maxscream = -1; \
2486 PL_maxsysfd = MAXSYSFD; \
2487 PL_statname = Nullsv; \
2488 PL_tmps_floor = -1; \
2490 PL_op_mask = NULL; \
2491 PL_laststatval = -1; \
2492 PL_laststype = OP_STAT; \
2493 PL_mess_sv = Nullsv; \
2494 PL_splitstr = " "; \
2495 PL_generation = 100; \
2496 PL_exitlist = NULL; \
2497 PL_exitlistlen = 0; \
2499 PL_in_clean_objs = FALSE; \
2500 PL_in_clean_all = FALSE; \
2501 PL_profiledata = NULL; \
2503 PL_rsfp_filters = Nullav; \
2508 # ifdef MULTIPLICITY
2509 # define PERLVAR(var,type)
2510 # define PERLVARA(var,n,type)
2511 # if defined(PERL_IMPLICIT_CONTEXT)
2512 # if defined(USE_THREADS)
2513 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2514 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2515 # else /* !USE_THREADS */
2516 # define PERLVARI(var,type,init) aTHX->var = init;
2517 # define PERLVARIC(var,type,init) aTHX->var = init;
2518 # endif /* USE_THREADS */
2520 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2521 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2523 # include "intrpvar.h"
2524 # ifndef USE_THREADS
2525 # include "thrdvar.h"
2532 # define PERLVAR(var,type)
2533 # define PERLVARA(var,n,type)
2534 # define PERLVARI(var,type,init) PL_##var = init;
2535 # define PERLVARIC(var,type,init) PL_##var = init;
2536 # include "intrpvar.h"
2537 # ifndef USE_THREADS
2538 # include "thrdvar.h"
2550 S_init_main_stash(pTHX)
2554 /* Note that strtab is a rather special HV. Assumptions are made
2555 about not iterating on it, and not adding tie magic to it.
2556 It is properly deallocated in perl_destruct() */
2557 PL_strtab = newHV();
2559 MUTEX_INIT(&PL_strtab_mutex);
2561 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2562 hv_ksplit(PL_strtab, 512);
2564 PL_curstash = PL_defstash = newHV();
2565 PL_curstname = newSVpvn("main",4);
2566 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2567 SvREFCNT_dec(GvHV(gv));
2568 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2570 HvNAME(PL_defstash) = savepv("main");
2571 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2572 GvMULTI_on(PL_incgv);
2573 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2574 GvMULTI_on(PL_hintgv);
2575 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2576 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2577 GvMULTI_on(PL_errgv);
2578 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2579 GvMULTI_on(PL_replgv);
2580 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2581 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2582 sv_setpvn(ERRSV, "", 0);
2583 PL_curstash = PL_defstash;
2584 CopSTASH_set(&PL_compiling, PL_defstash);
2585 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2586 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2587 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2588 /* We must init $/ before switches are processed. */
2589 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2593 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2598 PL_origfilename = savepv("-e");
2601 /* if find_script() returns, it returns a malloc()-ed value */
2602 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2604 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2605 char *s = scriptname + 8;
2606 *fdscript = atoi(s);
2610 scriptname = savepv(s + 1);
2611 Safefree(PL_origfilename);
2612 PL_origfilename = scriptname;
2618 Safefree(CopFILE(PL_curcop));
2620 SvREFCNT_dec(CopFILEGV(PL_curcop));
2622 CopFILE_set(PL_curcop, PL_origfilename);
2623 if (strEQ(PL_origfilename,"-"))
2625 if (*fdscript >= 0) {
2626 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2627 #if defined(HAS_FCNTL) && defined(F_SETFD)
2629 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2632 else if (PL_preprocess) {
2633 char *cpp_cfg = CPPSTDIN;
2634 SV *cpp = newSVpvn("",0);
2635 SV *cmd = NEWSV(0,0);
2637 if (strEQ(cpp_cfg, "cppstdin"))
2638 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2639 sv_catpv(cpp, cpp_cfg);
2641 sv_catpvn(sv, "-I", 2);
2642 sv_catpv(sv,PRIVLIB_EXP);
2644 DEBUG_P(PerlIO_printf(Perl_debug_log,
2645 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2646 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2647 #if defined(MSDOS) || defined(WIN32)
2648 Perl_sv_setpvf(aTHX_ cmd, "\
2649 sed %s -e \"/^[^#]/b\" \
2650 -e \"/^#[ ]*include[ ]/b\" \
2651 -e \"/^#[ ]*define[ ]/b\" \
2652 -e \"/^#[ ]*if[ ]/b\" \
2653 -e \"/^#[ ]*ifdef[ ]/b\" \
2654 -e \"/^#[ ]*ifndef[ ]/b\" \
2655 -e \"/^#[ ]*else/b\" \
2656 -e \"/^#[ ]*elif[ ]/b\" \
2657 -e \"/^#[ ]*undef[ ]/b\" \
2658 -e \"/^#[ ]*endif/b\" \
2660 %s | %"SVf" -C %"SVf" %s",
2661 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2664 Perl_sv_setpvf(aTHX_ cmd, "\
2665 %s %s -e '/^[^#]/b' \
2666 -e '/^#[ ]*include[ ]/b' \
2667 -e '/^#[ ]*define[ ]/b' \
2668 -e '/^#[ ]*if[ ]/b' \
2669 -e '/^#[ ]*ifdef[ ]/b' \
2670 -e '/^#[ ]*ifndef[ ]/b' \
2671 -e '/^#[ ]*else/b' \
2672 -e '/^#[ ]*elif[ ]/b' \
2673 -e '/^#[ ]*undef[ ]/b' \
2674 -e '/^#[ ]*endif/b' \
2676 %s | %"SVf" %"SVf" %s",
2678 Perl_sv_setpvf(aTHX_ cmd, "\
2679 %s %s -e '/^[^#]/b' \
2680 -e '/^#[ ]*include[ ]/b' \
2681 -e '/^#[ ]*define[ ]/b' \
2682 -e '/^#[ ]*if[ ]/b' \
2683 -e '/^#[ ]*ifdef[ ]/b' \
2684 -e '/^#[ ]*ifndef[ ]/b' \
2685 -e '/^#[ ]*else/b' \
2686 -e '/^#[ ]*elif[ ]/b' \
2687 -e '/^#[ ]*undef[ ]/b' \
2688 -e '/^#[ ]*endif/b' \
2690 %s | %"SVf" -C %"SVf" %s",
2697 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2699 scriptname, cpp, sv, CPPMINUS);
2700 PL_doextract = FALSE;
2701 #ifdef IAMSUID /* actually, this is caught earlier */
2702 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2704 (void)seteuid(PL_uid); /* musn't stay setuid root */
2707 (void)setreuid((Uid_t)-1, PL_uid);
2709 #ifdef HAS_SETRESUID
2710 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2712 PerlProc_setuid(PL_uid);
2716 if (PerlProc_geteuid() != PL_uid)
2717 Perl_croak(aTHX_ "Can't do seteuid!\n");
2719 #endif /* IAMSUID */
2720 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2724 else if (!*scriptname) {
2725 forbid_setid("program input from stdin");
2726 PL_rsfp = PerlIO_stdin();
2729 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2730 #if defined(HAS_FCNTL) && defined(F_SETFD)
2732 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2737 #ifndef IAMSUID /* in case script is not readable before setuid */
2739 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2740 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2743 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2744 (int)PERL_REVISION, (int)PERL_VERSION,
2745 (int)PERL_SUBVERSION), PL_origargv);
2746 Perl_croak(aTHX_ "Can't do setuid\n");
2752 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2755 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2756 CopFILE(PL_curcop), Strerror(errno));
2762 * I_SYSSTATVFS HAS_FSTATVFS
2764 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2765 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2766 * here so that metaconfig picks them up. */
2770 S_fd_on_nosuid_fs(pTHX_ int fd)
2772 int check_okay = 0; /* able to do all the required sys/libcalls */
2773 int on_nosuid = 0; /* the fd is on a nosuid fs */
2775 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2776 * fstatvfs() is UNIX98.
2777 * fstatfs() is 4.3 BSD.
2778 * ustat()+getmnt() is pre-4.3 BSD.
2779 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2780 * an irrelevant filesystem while trying to reach the right one.
2783 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2785 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2786 defined(HAS_FSTATVFS)
2787 # define FD_ON_NOSUID_CHECK_OKAY
2788 struct statvfs stfs;
2790 check_okay = fstatvfs(fd, &stfs) == 0;
2791 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2792 # endif /* fstatvfs */
2794 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2795 defined(PERL_MOUNT_NOSUID) && \
2796 defined(HAS_FSTATFS) && \
2797 defined(HAS_STRUCT_STATFS) && \
2798 defined(HAS_STRUCT_STATFS_F_FLAGS)
2799 # define FD_ON_NOSUID_CHECK_OKAY
2802 check_okay = fstatfs(fd, &stfs) == 0;
2803 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2804 # endif /* fstatfs */
2806 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2807 defined(PERL_MOUNT_NOSUID) && \
2808 defined(HAS_FSTAT) && \
2809 defined(HAS_USTAT) && \
2810 defined(HAS_GETMNT) && \
2811 defined(HAS_STRUCT_FS_DATA) && \
2813 # define FD_ON_NOSUID_CHECK_OKAY
2816 if (fstat(fd, &fdst) == 0) {
2818 if (ustat(fdst.st_dev, &us) == 0) {
2820 /* NOSTAT_ONE here because we're not examining fields which
2821 * vary between that case and STAT_ONE. */
2822 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2823 size_t cmplen = sizeof(us.f_fname);
2824 if (sizeof(fsd.fd_req.path) < cmplen)
2825 cmplen = sizeof(fsd.fd_req.path);
2826 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2827 fdst.st_dev == fsd.fd_req.dev) {
2829 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2835 # endif /* fstat+ustat+getmnt */
2837 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2838 defined(HAS_GETMNTENT) && \
2839 defined(HAS_HASMNTOPT) && \
2840 defined(MNTOPT_NOSUID)
2841 # define FD_ON_NOSUID_CHECK_OKAY
2842 FILE *mtab = fopen("/etc/mtab", "r");
2843 struct mntent *entry;
2844 struct stat stb, fsb;
2846 if (mtab && (fstat(fd, &stb) == 0)) {
2847 while (entry = getmntent(mtab)) {
2848 if (stat(entry->mnt_dir, &fsb) == 0
2849 && fsb.st_dev == stb.st_dev)
2851 /* found the filesystem */
2853 if (hasmntopt(entry, MNTOPT_NOSUID))
2856 } /* A single fs may well fail its stat(). */
2861 # endif /* getmntent+hasmntopt */
2864 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2867 #endif /* IAMSUID */
2870 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2876 /* do we need to emulate setuid on scripts? */
2878 /* This code is for those BSD systems that have setuid #! scripts disabled
2879 * in the kernel because of a security problem. Merely defining DOSUID
2880 * in perl will not fix that problem, but if you have disabled setuid
2881 * scripts in the kernel, this will attempt to emulate setuid and setgid
2882 * on scripts that have those now-otherwise-useless bits set. The setuid
2883 * root version must be called suidperl or sperlN.NNN. If regular perl
2884 * discovers that it has opened a setuid script, it calls suidperl with
2885 * the same argv that it had. If suidperl finds that the script it has
2886 * just opened is NOT setuid root, it sets the effective uid back to the
2887 * uid. We don't just make perl setuid root because that loses the
2888 * effective uid we had before invoking perl, if it was different from the
2891 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2892 * be defined in suidperl only. suidperl must be setuid root. The
2893 * Configure script will set this up for you if you want it.
2899 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2900 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2901 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2906 #ifndef HAS_SETREUID
2907 /* On this access check to make sure the directories are readable,
2908 * there is actually a small window that the user could use to make
2909 * filename point to an accessible directory. So there is a faint
2910 * chance that someone could execute a setuid script down in a
2911 * non-accessible directory. I don't know what to do about that.
2912 * But I don't think it's too important. The manual lies when
2913 * it says access() is useful in setuid programs.
2915 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2916 Perl_croak(aTHX_ "Permission denied");
2918 /* If we can swap euid and uid, then we can determine access rights
2919 * with a simple stat of the file, and then compare device and
2920 * inode to make sure we did stat() on the same file we opened.
2921 * Then we just have to make sure he or she can execute it.
2924 struct stat tmpstatbuf;
2928 setreuid(PL_euid,PL_uid) < 0
2931 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2934 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2935 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2936 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2937 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2938 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2939 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2940 Perl_croak(aTHX_ "Permission denied");
2942 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2943 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2944 (void)PerlIO_close(PL_rsfp);
2945 Perl_croak(aTHX_ "Permission denied\n");
2949 setreuid(PL_uid,PL_euid) < 0
2951 # if defined(HAS_SETRESUID)
2952 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2955 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2956 Perl_croak(aTHX_ "Can't reswap uid and euid");
2957 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2958 Perl_croak(aTHX_ "Permission denied\n");
2960 #endif /* HAS_SETREUID */
2961 #endif /* IAMSUID */
2963 if (!S_ISREG(PL_statbuf.st_mode))
2964 Perl_croak(aTHX_ "Permission denied");
2965 if (PL_statbuf.st_mode & S_IWOTH)
2966 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2967 PL_doswitches = FALSE; /* -s is insecure in suid */
2968 CopLINE_inc(PL_curcop);
2969 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2970 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2971 Perl_croak(aTHX_ "No #! line");
2972 s = SvPV(PL_linestr,n_a)+2;
2974 while (!isSPACE(*s)) s++;
2975 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2976 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2977 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2978 Perl_croak(aTHX_ "Not a perl script");
2979 while (*s == ' ' || *s == '\t') s++;
2981 * #! arg must be what we saw above. They can invoke it by
2982 * mentioning suidperl explicitly, but they may not add any strange
2983 * arguments beyond what #! says if they do invoke suidperl that way.
2985 len = strlen(validarg);
2986 if (strEQ(validarg," PHOOEY ") ||
2987 strnNE(s,validarg,len) || !isSPACE(s[len]))
2988 Perl_croak(aTHX_ "Args must match #! line");
2991 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2992 PL_euid == PL_statbuf.st_uid)
2994 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2995 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2996 #endif /* IAMSUID */
2998 if (PL_euid) { /* oops, we're not the setuid root perl */
2999 (void)PerlIO_close(PL_rsfp);
3002 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3003 (int)PERL_REVISION, (int)PERL_VERSION,
3004 (int)PERL_SUBVERSION), PL_origargv);
3006 Perl_croak(aTHX_ "Can't do setuid\n");
3009 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3011 (void)setegid(PL_statbuf.st_gid);
3014 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3016 #ifdef HAS_SETRESGID
3017 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3019 PerlProc_setgid(PL_statbuf.st_gid);
3023 if (PerlProc_getegid() != PL_statbuf.st_gid)
3024 Perl_croak(aTHX_ "Can't do setegid!\n");
3026 if (PL_statbuf.st_mode & S_ISUID) {
3027 if (PL_statbuf.st_uid != PL_euid)
3029 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3032 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3034 #ifdef HAS_SETRESUID
3035 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3037 PerlProc_setuid(PL_statbuf.st_uid);
3041 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3042 Perl_croak(aTHX_ "Can't do seteuid!\n");
3044 else if (PL_uid) { /* oops, mustn't run as root */
3046 (void)seteuid((Uid_t)PL_uid);
3049 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3051 #ifdef HAS_SETRESUID
3052 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3054 PerlProc_setuid((Uid_t)PL_uid);
3058 if (PerlProc_geteuid() != PL_uid)
3059 Perl_croak(aTHX_ "Can't do seteuid!\n");
3062 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3063 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3066 else if (PL_preprocess)
3067 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3068 else if (fdscript >= 0)
3069 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3071 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3073 /* We absolutely must clear out any saved ids here, so we */
3074 /* exec the real perl, substituting fd script for scriptname. */
3075 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3076 PerlIO_rewind(PL_rsfp);
3077 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3078 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3079 if (!PL_origargv[which])
3080 Perl_croak(aTHX_ "Permission denied");
3081 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3082 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3083 #if defined(HAS_FCNTL) && defined(F_SETFD)
3084 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3086 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3087 (int)PERL_REVISION, (int)PERL_VERSION,
3088 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3089 Perl_croak(aTHX_ "Can't do setuid\n");
3090 #endif /* IAMSUID */
3092 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3093 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3094 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3095 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3097 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3100 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3101 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3102 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3103 /* not set-id, must be wrapped */
3109 S_find_beginning(pTHX)
3111 register char *s, *s2;
3113 /* skip forward in input to the real script? */
3116 #ifdef MACOS_TRADITIONAL
3117 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3119 while (PL_doextract || gMacPerl_AlwaysExtract) {
3120 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3121 if (!gMacPerl_AlwaysExtract)
3122 Perl_croak(aTHX_ "No Perl script found in input\n");
3124 if (PL_doextract) /* require explicit override ? */
3125 if (!OverrideExtract(PL_origfilename))
3126 Perl_croak(aTHX_ "User aborted script\n");
3128 PL_doextract = FALSE;
3130 /* Pater peccavi, file does not have #! */
3131 PerlIO_rewind(PL_rsfp);
3136 while (PL_doextract) {
3137 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3138 Perl_croak(aTHX_ "No Perl script found in input\n");
3140 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3141 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3142 PL_doextract = FALSE;
3143 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3145 while (*s == ' ' || *s == '\t') s++;
3147 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3148 if (strnEQ(s2-4,"perl",4))
3150 while ((s = moreswitches(s)))
3153 #ifdef MACOS_TRADITIONAL
3164 PL_uid = PerlProc_getuid();
3165 PL_euid = PerlProc_geteuid();
3166 PL_gid = PerlProc_getgid();
3167 PL_egid = PerlProc_getegid();
3169 PL_uid |= PL_gid << 16;
3170 PL_euid |= PL_egid << 16;
3172 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3176 S_forbid_setid(pTHX_ char *s)
3178 if (PL_euid != PL_uid)
3179 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3180 if (PL_egid != PL_gid)
3181 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3185 Perl_init_debugger(pTHX)
3187 HV *ostash = PL_curstash;
3189 PL_curstash = PL_debstash;
3190 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3191 AvREAL_off(PL_dbargs);
3192 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3193 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3194 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3195 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3196 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3197 sv_setiv(PL_DBsingle, 0);
3198 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3199 sv_setiv(PL_DBtrace, 0);
3200 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3201 sv_setiv(PL_DBsignal, 0);
3202 PL_curstash = ostash;
3205 #ifndef STRESS_REALLOC
3206 #define REASONABLE(size) (size)
3208 #define REASONABLE(size) (1) /* unreasonable */
3212 Perl_init_stacks(pTHX)
3214 /* start with 128-item stack and 8K cxstack */
3215 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3216 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3217 PL_curstackinfo->si_type = PERLSI_MAIN;
3218 PL_curstack = PL_curstackinfo->si_stack;
3219 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3221 PL_stack_base = AvARRAY(PL_curstack);
3222 PL_stack_sp = PL_stack_base;
3223 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3225 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3228 PL_tmps_max = REASONABLE(128);
3230 New(54,PL_markstack,REASONABLE(32),I32);
3231 PL_markstack_ptr = PL_markstack;
3232 PL_markstack_max = PL_markstack + REASONABLE(32);
3236 New(54,PL_scopestack,REASONABLE(32),I32);
3237 PL_scopestack_ix = 0;
3238 PL_scopestack_max = REASONABLE(32);
3240 New(54,PL_savestack,REASONABLE(128),ANY);
3241 PL_savestack_ix = 0;
3242 PL_savestack_max = REASONABLE(128);
3244 New(54,PL_retstack,REASONABLE(16),OP*);
3246 PL_retstack_max = REASONABLE(16);
3254 while (PL_curstackinfo->si_next)
3255 PL_curstackinfo = PL_curstackinfo->si_next;
3256 while (PL_curstackinfo) {
3257 PERL_SI *p = PL_curstackinfo->si_prev;
3258 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3259 Safefree(PL_curstackinfo->si_cxstack);
3260 Safefree(PL_curstackinfo);
3261 PL_curstackinfo = p;
3263 Safefree(PL_tmps_stack);
3264 Safefree(PL_markstack);
3265 Safefree(PL_scopestack);
3266 Safefree(PL_savestack);
3267 Safefree(PL_retstack);
3271 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3282 lex_start(PL_linestr);
3284 PL_subname = newSVpvn("main",4);
3288 S_init_predump_symbols(pTHX)
3293 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3294 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3295 GvMULTI_on(PL_stdingv);
3296 io = GvIOp(PL_stdingv);
3297 IoTYPE(io) = IoTYPE_RDONLY;
3298 IoIFP(io) = PerlIO_stdin();
3299 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3301 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3303 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3306 IoTYPE(io) = IoTYPE_WRONLY;
3307 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3309 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3311 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3313 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3314 GvMULTI_on(PL_stderrgv);
3315 io = GvIOp(PL_stderrgv);
3316 IoTYPE(io) = IoTYPE_WRONLY;
3317 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3318 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3320 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3322 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3325 Safefree(PL_osname);
3326 PL_osname = savepv(OSNAME);
3330 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3335 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3336 char **dup_env_base = 0;
3337 int dup_env_count = 0;
3340 argc--,argv++; /* skip name of script */
3341 if (PL_doswitches) {
3342 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3345 if (argv[0][1] == '-' && !argv[0][2]) {
3349 if ((s = strchr(argv[0], '='))) {
3351 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3354 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3357 PL_toptarget = NEWSV(0,0);
3358 sv_upgrade(PL_toptarget, SVt_PVFM);
3359 sv_setpvn(PL_toptarget, "", 0);
3360 PL_bodytarget = NEWSV(0,0);
3361 sv_upgrade(PL_bodytarget, SVt_PVFM);
3362 sv_setpvn(PL_bodytarget, "", 0);
3363 PL_formtarget = PL_bodytarget;
3366 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3367 #ifdef MACOS_TRADITIONAL
3368 /* $0 is not majick on a Mac */
3369 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3371 sv_setpv(GvSV(tmpgv),PL_origfilename);
3372 magicname("0", "0", 1);
3375 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3377 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3379 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3381 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3382 GvMULTI_on(PL_argvgv);
3383 (void)gv_AVadd(PL_argvgv);
3384 av_clear(GvAVn(PL_argvgv));
3385 for (; argc > 0; argc--,argv++) {
3386 SV *sv = newSVpv(argv[0],0);
3387 av_push(GvAVn(PL_argvgv),sv);
3388 if (PL_widesyscalls)
3389 (void)sv_utf8_decode(sv);
3392 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3394 GvMULTI_on(PL_envgv);
3395 hv = GvHVn(PL_envgv);
3396 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3397 #ifdef USE_ENVIRON_ARRAY
3398 /* Note that if the supplied env parameter is actually a copy
3399 of the global environ then it may now point to free'd memory
3400 if the environment has been modified since. To avoid this
3401 problem we treat env==NULL as meaning 'use the default'
3406 environ[0] = Nullch;
3407 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3410 for (env_base = env; *env; env++)
3412 if ((dup_env_base = (char **)
3413 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
3415 for (env = env_base, dup_env = dup_env_base;
3418 /* With environ one needs to use safesysmalloc(). */
3419 *dup_env = safesysmalloc(strlen(*env) + 1);
3420 (void)strcpy(*dup_env, *env);
3426 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3427 for (; *env; env++) {
3428 if (!(s = strchr(*env,'=')))
3434 sv = newSVpv(s--,0);
3435 (void)hv_store(hv, *env, s - *env, sv, 0);
3438 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3441 for (dup_env = dup_env_base; *dup_env; dup_env++)
3442 safesysfree(*dup_env);
3443 safesysfree(dup_env_base);
3445 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3446 #endif /* USE_ENVIRON_ARRAY */
3447 #ifdef DYNAMIC_ENV_FETCH
3448 HvNAME(hv) = savepv(ENV_HV_NAME);
3452 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3453 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3457 S_init_perllib(pTHX)
3462 s = PerlEnv_getenv("PERL5LIB");
3464 incpush(s, TRUE, TRUE);
3466 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3468 /* Treat PERL5?LIB as a possible search list logical name -- the
3469 * "natural" VMS idiom for a Unix path string. We allow each
3470 * element to be a set of |-separated directories for compatibility.
3474 if (my_trnlnm("PERL5LIB",buf,0))
3475 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3477 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3481 /* Use the ~-expanded versions of APPLLIB (undocumented),
3482 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3485 incpush(APPLLIB_EXP, TRUE, TRUE);
3489 incpush(ARCHLIB_EXP, FALSE, FALSE);
3491 #ifdef MACOS_TRADITIONAL
3493 struct stat tmpstatbuf;
3494 SV * privdir = NEWSV(55, 0);
3495 char * macperl = PerlEnv_getenv("MACPERL");
3500 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3501 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3502 incpush(SvPVX(privdir), TRUE, FALSE);
3503 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3504 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3505 incpush(SvPVX(privdir), TRUE, FALSE);
3507 SvREFCNT_dec(privdir);
3510 incpush(":", FALSE, FALSE);
3513 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3516 incpush(PRIVLIB_EXP, TRUE, FALSE);
3518 incpush(PRIVLIB_EXP, FALSE, FALSE);
3522 /* sitearch is always relative to sitelib on Windows for
3523 * DLL-based path intuition to work correctly */
3524 # if !defined(WIN32)
3525 incpush(SITEARCH_EXP, FALSE, FALSE);
3531 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3533 incpush(SITELIB_EXP, FALSE, FALSE);
3537 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3538 incpush(SITELIB_STEM, FALSE, TRUE);
3541 #ifdef PERL_VENDORARCH_EXP
3542 /* vendorarch is always relative to vendorlib on Windows for
3543 * DLL-based path intuition to work correctly */
3544 # if !defined(WIN32)
3545 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3549 #ifdef PERL_VENDORLIB_EXP
3551 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3553 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3557 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3558 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3561 #ifdef PERL_OTHERLIBDIRS
3562 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3566 incpush(".", FALSE, FALSE);
3567 #endif /* MACOS_TRADITIONAL */
3570 #if defined(DOSISH) || defined(EPOC)
3571 # define PERLLIB_SEP ';'
3574 # define PERLLIB_SEP '|'
3576 # if defined(MACOS_TRADITIONAL)
3577 # define PERLLIB_SEP ','
3579 # define PERLLIB_SEP ':'
3583 #ifndef PERLLIB_MANGLE
3584 # define PERLLIB_MANGLE(s,n) (s)
3588 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3590 SV *subdir = Nullsv;
3595 if (addsubdirs || addoldvers) {
3596 subdir = sv_newmortal();
3599 /* Break at all separators */
3601 SV *libdir = NEWSV(55,0);
3604 /* skip any consecutive separators */
3605 while ( *p == PERLLIB_SEP ) {
3606 /* Uncomment the next line for PATH semantics */
3607 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3611 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3612 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3617 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3618 p = Nullch; /* break out */
3620 #ifdef MACOS_TRADITIONAL
3621 if (!strchr(SvPVX(libdir), ':'))
3622 sv_insert(libdir, 0, 0, ":", 1);
3623 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3624 sv_catpv(libdir, ":");
3628 * BEFORE pushing libdir onto @INC we may first push version- and
3629 * archname-specific sub-directories.
3631 if (addsubdirs || addoldvers) {
3632 #ifdef PERL_INC_VERSION_LIST
3633 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3634 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3635 const char **incver;
3637 struct stat tmpstatbuf;
3642 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3644 while (unix[len-1] == '/') len--; /* Cosmetic */
3645 sv_usepvn(libdir,unix,len);
3648 PerlIO_printf(Perl_error_log,
3649 "Failed to unixify @INC element \"%s\"\n",
3653 #ifdef MACOS_TRADITIONAL
3654 #define PERL_AV_SUFFIX_FMT ""
3655 #define PERL_ARCH_FMT "%s:"
3656 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3658 #define PERL_AV_SUFFIX_FMT "/"
3659 #define PERL_ARCH_FMT "/%s"
3660 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3662 /* .../version/archname if -d .../version/archname */
3663 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3665 (int)PERL_REVISION, (int)PERL_VERSION,
3666 (int)PERL_SUBVERSION, ARCHNAME);
3667 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3668 S_ISDIR(tmpstatbuf.st_mode))
3669 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3671 /* .../version if -d .../version */
3672 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3673 (int)PERL_REVISION, (int)PERL_VERSION,
3674 (int)PERL_SUBVERSION);
3675 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3676 S_ISDIR(tmpstatbuf.st_mode))
3677 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3679 /* .../archname if -d .../archname */
3680 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3681 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3682 S_ISDIR(tmpstatbuf.st_mode))
3683 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3686 #ifdef PERL_INC_VERSION_LIST
3688 for (incver = incverlist; *incver; incver++) {
3689 /* .../xxx if -d .../xxx */
3690 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3691 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3692 S_ISDIR(tmpstatbuf.st_mode))
3693 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3699 /* finally push this lib directory on the end of @INC */
3700 av_push(GvAVn(PL_incgv), libdir);
3705 STATIC struct perl_thread *
3706 S_init_main_thread(pTHX)
3708 #if !defined(PERL_IMPLICIT_CONTEXT)
3709 struct perl_thread *thr;
3713 Newz(53, thr, 1, struct perl_thread);
3714 PL_curcop = &PL_compiling;
3715 thr->interp = PERL_GET_INTERP;
3716 thr->cvcache = newHV();
3717 thr->threadsv = newAV();
3718 /* thr->threadsvp is set when find_threadsv is called */
3719 thr->specific = newAV();
3720 thr->flags = THRf_R_JOINABLE;
3721 MUTEX_INIT(&thr->mutex);
3722 /* Handcraft thrsv similarly to mess_sv */
3723 New(53, PL_thrsv, 1, SV);
3724 Newz(53, xpv, 1, XPV);
3725 SvFLAGS(PL_thrsv) = SVt_PV;
3726 SvANY(PL_thrsv) = (void*)xpv;
3727 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3728 SvPVX(PL_thrsv) = (char*)thr;
3729 SvCUR_set(PL_thrsv, sizeof(thr));
3730 SvLEN_set(PL_thrsv, sizeof(thr));
3731 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3732 thr->oursv = PL_thrsv;
3733 PL_chopset = " \n-";
3736 MUTEX_LOCK(&PL_threads_mutex);
3742 MUTEX_UNLOCK(&PL_threads_mutex);
3744 #ifdef HAVE_THREAD_INTERN
3745 Perl_init_thread_intern(thr);
3748 #ifdef SET_THREAD_SELF
3749 SET_THREAD_SELF(thr);
3751 thr->self = pthread_self();
3752 #endif /* SET_THREAD_SELF */
3756 * These must come after the thread self setting
3757 * because sv_setpvn does SvTAINT and the taint
3758 * fields thread selfness being set.
3760 PL_toptarget = NEWSV(0,0);
3761 sv_upgrade(PL_toptarget, SVt_PVFM);
3762 sv_setpvn(PL_toptarget, "", 0);
3763 PL_bodytarget = NEWSV(0,0);
3764 sv_upgrade(PL_bodytarget, SVt_PVFM);
3765 sv_setpvn(PL_bodytarget, "", 0);
3766 PL_formtarget = PL_bodytarget;
3767 thr->errsv = newSVpvn("", 0);
3768 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3771 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3772 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3773 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3774 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3775 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3777 PL_reginterp_cnt = 0;
3781 #endif /* USE_THREADS */
3784 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3787 line_t oldline = CopLINE(PL_curcop);
3793 while (AvFILL(paramList) >= 0) {
3794 cv = (CV*)av_shift(paramList);
3795 if ((PL_minus_c & 0x10) && (paramList == PL_beginav)) {
3796 /* save PL_beginav for compiler */
3797 if (! PL_beginav_save)
3798 PL_beginav_save = newAV();
3799 av_push(PL_beginav_save, (SV*)cv);
3803 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3804 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3810 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3814 (void)SvPV(atsv, len);
3817 PL_curcop = &PL_compiling;
3818 CopLINE_set(PL_curcop, oldline);
3819 if (paramList == PL_beginav)
3820 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3822 Perl_sv_catpvf(aTHX_ atsv,
3823 "%s failed--call queue aborted",
3824 paramList == PL_checkav ? "CHECK"
3825 : paramList == PL_initav ? "INIT"
3827 while (PL_scopestack_ix > oldscope)
3830 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3837 /* my_exit() was called */
3838 while (PL_scopestack_ix > oldscope)
3841 PL_curstash = PL_defstash;
3842 PL_curcop = &PL_compiling;
3843 CopLINE_set(PL_curcop, oldline);
3845 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3846 if (paramList == PL_beginav)
3847 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3849 Perl_croak(aTHX_ "%s failed--call queue aborted",
3850 paramList == PL_checkav ? "CHECK"
3851 : paramList == PL_initav ? "INIT"
3858 PL_curcop = &PL_compiling;
3859 CopLINE_set(PL_curcop, oldline);
3862 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3870 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3872 S_vcall_list_body(pTHX_ va_list args)
3874 CV *cv = va_arg(args, CV*);
3875 return call_list_body(cv);
3880 S_call_list_body(pTHX_ CV *cv)
3882 PUSHMARK(PL_stack_sp);
3883 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3888 Perl_my_exit(pTHX_ U32 status)
3890 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3891 thr, (unsigned long) status));
3900 STATUS_NATIVE_SET(status);
3907 Perl_my_failure_exit(pTHX)
3910 if (vaxc$errno & 1) {
3911 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3912 STATUS_NATIVE_SET(44);
3915 if (!vaxc$errno && errno) /* unlikely */
3916 STATUS_NATIVE_SET(44);
3918 STATUS_NATIVE_SET(vaxc$errno);
3923 STATUS_POSIX_SET(errno);
3925 exitstatus = STATUS_POSIX >> 8;
3926 if (exitstatus & 255)
3927 STATUS_POSIX_SET(exitstatus);
3929 STATUS_POSIX_SET(255);
3936 S_my_exit_jump(pTHX)
3938 register PERL_CONTEXT *cx;
3943 SvREFCNT_dec(PL_e_script);
3944 PL_e_script = Nullsv;
3947 POPSTACK_TO(PL_mainstack);
3948 if (cxstack_ix >= 0) {
3951 POPBLOCK(cx,PL_curpm);
3963 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3966 p = SvPVX(PL_e_script);
3967 nl = strchr(p, '\n');
3968 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3970 filter_del(read_e_script);
3973 sv_catpvn(buf_sv, p, nl-p);
3974 sv_chop(PL_e_script, nl);