3 * Copyright (c) 1987-2000 Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
15 #define PERL_IN_PERL_C
17 #include "patchlevel.h" /* for local_patches */
19 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
24 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
25 char *getenv (char *); /* Usually in <stdlib.h> */
28 static I32 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen);
36 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
43 #define perl_construct Perl_construct
44 #define perl_parse Perl_parse
45 #define perl_run Perl_run
46 #define perl_destruct Perl_destruct
47 #define perl_free Perl_free
50 #if defined(USE_THREADS)
51 # define INIT_TLS_AND_INTERP \
53 if (!PL_curinterp) { \
54 PERL_SET_INTERP(my_perl); \
60 # if defined(USE_ITHREADS)
61 # define INIT_TLS_AND_INTERP \
63 if (!PL_curinterp) { \
64 PERL_SET_INTERP(my_perl); \
67 PERL_SET_THX(my_perl); \
71 PERL_SET_THX(my_perl); \
75 # define INIT_TLS_AND_INTERP \
77 if (!PL_curinterp) { \
78 PERL_SET_INTERP(my_perl); \
80 PERL_SET_THX(my_perl); \
85 #ifdef PERL_IMPLICIT_SYS
87 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
88 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
89 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
90 struct IPerlDir* ipD, struct IPerlSock* ipS,
91 struct IPerlProc* ipP)
93 PerlInterpreter *my_perl;
95 my_perl = (PerlInterpreter*)new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd,
96 ipLIO, ipD, ipS, ipP);
99 /* New() needs interpreter, so call malloc() instead */
100 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
102 Zero(my_perl, 1, PerlInterpreter);
119 =for apidoc perl_alloc
121 Allocates a new Perl interpreter. See L<perlembed>.
129 PerlInterpreter *my_perl;
131 /* New() needs interpreter, so call malloc() instead */
132 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
135 Zero(my_perl, 1, PerlInterpreter);
138 #endif /* PERL_IMPLICIT_SYS */
141 =for apidoc perl_construct
143 Initializes a new Perl interpreter. See L<perlembed>.
149 perl_construct(pTHXx)
154 struct perl_thread *thr = NULL;
155 #endif /* FAKE_THREADS */
156 #endif /* USE_THREADS */
160 PL_perl_destruct_level = 1;
162 if (PL_perl_destruct_level > 0)
166 /* Init the real globals (and main thread)? */
169 MUTEX_INIT(&PL_sv_mutex);
171 * Safe to use basic SV functions from now on (though
172 * not things like mortals or tainting yet).
174 MUTEX_INIT(&PL_eval_mutex);
175 COND_INIT(&PL_eval_cond);
176 MUTEX_INIT(&PL_threads_mutex);
177 COND_INIT(&PL_nthreads_cond);
178 # ifdef EMULATE_ATOMIC_REFCOUNTS
179 MUTEX_INIT(&PL_svref_mutex);
180 # endif /* EMULATE_ATOMIC_REFCOUNTS */
182 MUTEX_INIT(&PL_cred_mutex);
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 s = uv_to_utf8(s, (UV)PERL_REVISION);
257 s = uv_to_utf8(s, (UV)PERL_VERSION);
258 s = uv_to_utf8(s, (UV)PERL_SUBVERSION);
260 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
261 SvPOK_on(PL_patchlevel);
262 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
263 + ((NV)PERL_VERSION / (NV)1000)
264 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
265 + ((NV)PERL_SUBVERSION / (NV)1000000)
268 SvNOK_on(PL_patchlevel); /* dual valued */
269 SvUTF8_on(PL_patchlevel);
270 SvREADONLY_on(PL_patchlevel);
273 #if defined(LOCAL_PATCH_COUNT)
274 PL_localpatches = local_patches; /* For possible -v */
277 #ifdef HAVE_INTERP_INTERN
281 PerlIO_init(); /* Hook to IO system */
283 PL_fdpid = newAV(); /* for remembering popen pids by fd */
284 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
285 PL_errors = newSVpvn("",0);
291 =for apidoc perl_destruct
293 Shuts down a Perl interpreter. See L<perlembed>.
301 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)
398 /* We must account for everything. */
400 /* Destroy the main CV and syntax tree */
402 PL_curpad = AvARRAY(PL_comppad);
403 op_free(PL_main_root);
404 PL_main_root = Nullop;
406 PL_curcop = &PL_compiling;
407 PL_main_start = Nullop;
408 SvREFCNT_dec(PL_main_cv);
412 if (PL_sv_objcount) {
414 * Try to destruct global references. We do this first so that the
415 * destructors and destructees still exist. Some sv's might remain.
416 * Non-referenced objects are on their own.
421 /* unhook hooks which will soon be, or use, destroyed data */
422 SvREFCNT_dec(PL_warnhook);
423 PL_warnhook = Nullsv;
424 SvREFCNT_dec(PL_diehook);
427 /* call exit list functions */
428 while (PL_exitlistlen-- > 0)
429 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
431 Safefree(PL_exitlist);
433 if (destruct_level == 0){
435 DEBUG_P(debprofdump());
437 /* The exit() function will do everything that needs doing. */
441 /* loosen bonds of global variables */
444 (void)PerlIO_close(PL_rsfp);
448 /* Filters for program text */
449 SvREFCNT_dec(PL_rsfp_filters);
450 PL_rsfp_filters = Nullav;
453 PL_preprocess = FALSE;
459 PL_doswitches = FALSE;
460 PL_dowarn = G_WARN_OFF;
461 PL_doextract = FALSE;
462 PL_sawampersand = FALSE; /* must save all match strings */
465 Safefree(PL_inplace);
467 SvREFCNT_dec(PL_patchlevel);
470 SvREFCNT_dec(PL_e_script);
471 PL_e_script = Nullsv;
474 /* magical thingies */
476 Safefree(PL_ofs); /* $, */
479 Safefree(PL_ors); /* $\ */
482 SvREFCNT_dec(PL_rs); /* $/ */
485 SvREFCNT_dec(PL_nrs); /* $/ helper */
488 PL_multiline = 0; /* $* */
489 Safefree(PL_osname); /* $^O */
492 SvREFCNT_dec(PL_statname);
493 PL_statname = Nullsv;
496 /* defgv, aka *_ should be taken care of elsewhere */
498 /* clean up after study() */
499 SvREFCNT_dec(PL_lastscream);
500 PL_lastscream = Nullsv;
501 Safefree(PL_screamfirst);
503 Safefree(PL_screamnext);
507 Safefree(PL_efloatbuf);
508 PL_efloatbuf = Nullch;
511 /* startup and shutdown function lists */
512 SvREFCNT_dec(PL_beginav);
513 SvREFCNT_dec(PL_endav);
514 SvREFCNT_dec(PL_checkav);
515 SvREFCNT_dec(PL_initav);
521 /* shortcuts just get cleared */
527 PL_argvoutgv = Nullgv;
529 PL_stderrgv = Nullgv;
530 PL_last_in_gv = Nullgv;
532 PL_debstash = Nullhv;
534 /* reset so print() ends up where we expect */
537 SvREFCNT_dec(PL_argvout_stack);
538 PL_argvout_stack = Nullav;
540 SvREFCNT_dec(PL_modglobal);
541 PL_modglobal = Nullhv;
542 SvREFCNT_dec(PL_preambleav);
543 PL_preambleav = Nullav;
544 SvREFCNT_dec(PL_subname);
546 SvREFCNT_dec(PL_linestr);
548 SvREFCNT_dec(PL_pidstatus);
549 PL_pidstatus = Nullhv;
550 SvREFCNT_dec(PL_toptarget);
551 PL_toptarget = Nullsv;
552 SvREFCNT_dec(PL_bodytarget);
553 PL_bodytarget = Nullsv;
554 PL_formtarget = Nullsv;
556 /* free locale stuff */
557 #ifdef USE_LOCALE_COLLATE
558 Safefree(PL_collation_name);
559 PL_collation_name = Nullch;
562 #ifdef USE_LOCALE_NUMERIC
563 Safefree(PL_numeric_name);
564 PL_numeric_name = Nullch;
567 /* clear utf8 character classes */
568 SvREFCNT_dec(PL_utf8_alnum);
569 SvREFCNT_dec(PL_utf8_alnumc);
570 SvREFCNT_dec(PL_utf8_ascii);
571 SvREFCNT_dec(PL_utf8_alpha);
572 SvREFCNT_dec(PL_utf8_space);
573 SvREFCNT_dec(PL_utf8_cntrl);
574 SvREFCNT_dec(PL_utf8_graph);
575 SvREFCNT_dec(PL_utf8_digit);
576 SvREFCNT_dec(PL_utf8_upper);
577 SvREFCNT_dec(PL_utf8_lower);
578 SvREFCNT_dec(PL_utf8_print);
579 SvREFCNT_dec(PL_utf8_punct);
580 SvREFCNT_dec(PL_utf8_xdigit);
581 SvREFCNT_dec(PL_utf8_mark);
582 SvREFCNT_dec(PL_utf8_toupper);
583 SvREFCNT_dec(PL_utf8_tolower);
584 PL_utf8_alnum = Nullsv;
585 PL_utf8_alnumc = Nullsv;
586 PL_utf8_ascii = Nullsv;
587 PL_utf8_alpha = Nullsv;
588 PL_utf8_space = Nullsv;
589 PL_utf8_cntrl = Nullsv;
590 PL_utf8_graph = Nullsv;
591 PL_utf8_digit = Nullsv;
592 PL_utf8_upper = Nullsv;
593 PL_utf8_lower = Nullsv;
594 PL_utf8_print = Nullsv;
595 PL_utf8_punct = Nullsv;
596 PL_utf8_xdigit = Nullsv;
597 PL_utf8_mark = Nullsv;
598 PL_utf8_toupper = Nullsv;
599 PL_utf8_totitle = Nullsv;
600 PL_utf8_tolower = Nullsv;
602 if (!specialWARN(PL_compiling.cop_warnings))
603 SvREFCNT_dec(PL_compiling.cop_warnings);
604 PL_compiling.cop_warnings = Nullsv;
605 if (!specialCopIO(PL_compiling.cop_io))
606 SvREFCNT_dec(PL_compiling.cop_io);
607 PL_compiling.cop_io = Nullsv;
609 Safefree(CopFILE(&PL_compiling));
610 CopFILE(&PL_compiling) = Nullch;
611 Safefree(CopSTASHPV(&PL_compiling));
613 SvREFCNT_dec(CopFILEGV(&PL_compiling));
614 CopFILEGV(&PL_compiling) = Nullgv;
615 /* cop_stash is not refcounted */
618 /* Prepare to destruct main symbol table. */
623 SvREFCNT_dec(PL_curstname);
624 PL_curstname = Nullsv;
626 /* clear queued errors */
627 SvREFCNT_dec(PL_errors);
631 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
632 if (PL_scopestack_ix != 0)
633 Perl_warner(aTHX_ WARN_INTERNAL,
634 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
635 (long)PL_scopestack_ix);
636 if (PL_savestack_ix != 0)
637 Perl_warner(aTHX_ WARN_INTERNAL,
638 "Unbalanced saves: %ld more saves than restores\n",
639 (long)PL_savestack_ix);
640 if (PL_tmps_floor != -1)
641 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
642 (long)PL_tmps_floor + 1);
643 if (cxstack_ix != -1)
644 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
645 (long)cxstack_ix + 1);
648 /* Now absolutely destruct everything, somehow or other, loops or no. */
650 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
651 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
652 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
653 last_sv_count = PL_sv_count;
656 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
657 SvFLAGS(PL_fdpid) |= SVt_PVAV;
658 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
659 SvFLAGS(PL_strtab) |= SVt_PVHV;
661 AvREAL_off(PL_fdpid); /* no surviving entries */
662 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
665 #ifdef HAVE_INTERP_INTERN
669 /* Destruct the global string table. */
671 /* Yell and reset the HeVAL() slots that are still holding refcounts,
672 * so that sv_free() won't fail on them.
680 max = HvMAX(PL_strtab);
681 array = HvARRAY(PL_strtab);
684 if (hent && ckWARN_d(WARN_INTERNAL)) {
685 Perl_warner(aTHX_ WARN_INTERNAL,
686 "Unbalanced string table refcount: (%d) for \"%s\"",
687 HeVAL(hent) - Nullsv, HeKEY(hent));
688 HeVAL(hent) = Nullsv;
698 SvREFCNT_dec(PL_strtab);
700 /* free special SVs */
702 SvREFCNT(&PL_sv_yes) = 0;
703 sv_clear(&PL_sv_yes);
704 SvANY(&PL_sv_yes) = NULL;
705 SvFLAGS(&PL_sv_yes) = 0;
707 SvREFCNT(&PL_sv_no) = 0;
709 SvANY(&PL_sv_no) = NULL;
710 SvFLAGS(&PL_sv_no) = 0;
712 SvREFCNT(&PL_sv_undef) = 0;
713 SvREADONLY_off(&PL_sv_undef);
715 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
716 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
718 Safefree(PL_origfilename);
719 Safefree(PL_reg_start_tmp);
721 Safefree(PL_reg_curpm);
722 Safefree(PL_reg_poscache);
723 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
724 Safefree(PL_op_mask);
725 Safefree(PL_psig_ptr);
726 Safefree(PL_psig_name);
728 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
730 DEBUG_P(debprofdump());
732 MUTEX_DESTROY(&PL_strtab_mutex);
733 MUTEX_DESTROY(&PL_sv_mutex);
734 MUTEX_DESTROY(&PL_eval_mutex);
735 MUTEX_DESTROY(&PL_cred_mutex);
736 MUTEX_DESTROY(&PL_fdpid_mutex);
737 COND_DESTROY(&PL_eval_cond);
738 #ifdef EMULATE_ATOMIC_REFCOUNTS
739 MUTEX_DESTROY(&PL_svref_mutex);
740 #endif /* EMULATE_ATOMIC_REFCOUNTS */
742 /* As the penultimate thing, free the non-arena SV for thrsv */
743 Safefree(SvPVX(PL_thrsv));
744 Safefree(SvANY(PL_thrsv));
747 #endif /* USE_THREADS */
751 /* As the absolutely last thing, free the non-arena SV for mess() */
754 /* it could have accumulated taint magic */
755 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
758 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
759 moremagic = mg->mg_moremagic;
760 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
761 Safefree(mg->mg_ptr);
765 /* we know that type >= SVt_PV */
766 (void)SvOOK_off(PL_mess_sv);
767 Safefree(SvPVX(PL_mess_sv));
768 Safefree(SvANY(PL_mess_sv));
769 Safefree(PL_mess_sv);
775 =for apidoc perl_free
777 Releases a Perl interpreter. See L<perlembed>.
785 #if defined(PERL_OBJECT)
789 # if defined(PERL_IMPLICIT_SYS)
790 void *host = w32_internal_host;
791 if (PerlProc_lasthost()) {
795 win32_delete_internal_host(host);
807 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
809 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
810 PL_exitlist[PL_exitlistlen].fn = fn;
811 PL_exitlist[PL_exitlistlen].ptr = ptr;
816 =for apidoc perl_parse
818 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
824 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
833 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
836 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
837 setuid perl scripts securely.\n");
841 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
842 _dyld_lookup_and_bind
843 ("__environ", (unsigned long *) &environ_pointer, NULL);
848 #ifdef USE_ENVIRON_ARRAY
849 PL_origenviron = environ;
854 /* Come here if running an undumped a.out. */
856 PL_origfilename = savepv(argv[0]);
857 PL_do_undump = FALSE;
858 cxstack_ix = -1; /* start label stack again */
860 init_postdump_symbols(argc,argv,env);
865 PL_curpad = AvARRAY(PL_comppad);
866 op_free(PL_main_root);
867 PL_main_root = Nullop;
869 PL_main_start = Nullop;
870 SvREFCNT_dec(PL_main_cv);
874 oldscope = PL_scopestack_ix;
875 PL_dowarn = G_WARN_OFF;
877 #ifdef PERL_FLEXIBLE_EXCEPTIONS
878 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
884 #ifndef PERL_FLEXIBLE_EXCEPTIONS
885 parse_body(env,xsinit);
888 call_list(oldscope, PL_checkav);
895 /* my_exit() was called */
896 while (PL_scopestack_ix > oldscope)
899 PL_curstash = PL_defstash;
901 call_list(oldscope, PL_checkav);
902 ret = STATUS_NATIVE_EXPORT;
905 PerlIO_printf(Perl_error_log, "panic: top_env\n");
913 #ifdef PERL_FLEXIBLE_EXCEPTIONS
915 S_vparse_body(pTHX_ va_list args)
917 char **env = va_arg(args, char**);
918 XSINIT_t xsinit = va_arg(args, XSINIT_t);
920 return parse_body(env, xsinit);
925 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
927 int argc = PL_origargc;
928 char **argv = PL_origargv;
929 char *scriptname = NULL;
931 VOL bool dosearch = FALSE;
936 char *cddir = Nullch;
938 sv_setpvn(PL_linestr,"",0);
939 sv = newSVpvn("",0); /* first used for -I flags */
943 for (argc--,argv++; argc > 0; argc--,argv++) {
944 if (argv[0][0] != '-' || !argv[0][1])
948 validarg = " PHOOEY ";
957 win32_argv2utf8(argc-1, argv+1);
960 #ifndef PERL_STRICT_CR
984 if ((s = moreswitches(s)))
994 #ifdef MACOS_TRADITIONAL
995 /* ignore -e for Dev:Pseudo argument */
996 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
999 if (PL_euid != PL_uid || PL_egid != PL_gid)
1000 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1002 PL_e_script = newSVpvn("",0);
1003 filter_add(read_e_script, NULL);
1006 sv_catpv(PL_e_script, s);
1008 sv_catpv(PL_e_script, argv[1]);
1012 Perl_croak(aTHX_ "No code specified for -e");
1013 sv_catpv(PL_e_script, "\n");
1016 case 'I': /* -I handled both here and in moreswitches() */
1018 if (!*++s && (s=argv[1]) != Nullch) {
1023 STRLEN len = strlen(s);
1024 p = savepvn(s, len);
1025 incpush(p, TRUE, TRUE);
1026 sv_catpvn(sv, "-I", 2);
1027 sv_catpvn(sv, p, len);
1028 sv_catpvn(sv, " ", 1);
1032 Perl_croak(aTHX_ "No directory specified for -I");
1036 PL_preprocess = TRUE;
1046 PL_preambleav = newAV();
1047 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1049 PL_Sv = newSVpv("print myconfig();",0);
1051 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1053 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1055 sv_catpv(PL_Sv,"\" Compile-time options:");
1057 sv_catpv(PL_Sv," DEBUGGING");
1059 # ifdef MULTIPLICITY
1060 sv_catpv(PL_Sv," MULTIPLICITY");
1063 sv_catpv(PL_Sv," USE_THREADS");
1065 # ifdef USE_ITHREADS
1066 sv_catpv(PL_Sv," USE_ITHREADS");
1068 # ifdef USE_64_BIT_INT
1069 sv_catpv(PL_Sv," USE_64_BIT_INT");
1071 # ifdef USE_64_BIT_ALL
1072 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1074 # ifdef USE_LONG_DOUBLE
1075 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1077 # ifdef USE_LARGE_FILES
1078 sv_catpv(PL_Sv," USE_LARGE_FILES");
1081 sv_catpv(PL_Sv," USE_SOCKS");
1084 sv_catpv(PL_Sv," PERL_OBJECT");
1086 # ifdef PERL_IMPLICIT_CONTEXT
1087 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1089 # ifdef PERL_IMPLICIT_SYS
1090 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1092 sv_catpv(PL_Sv,"\\n\",");
1094 #if defined(LOCAL_PATCH_COUNT)
1095 if (LOCAL_PATCH_COUNT > 0) {
1097 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1098 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1099 if (PL_localpatches[i])
1100 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1104 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1107 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1109 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1112 sv_catpv(PL_Sv, "; \
1114 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1115 print \" \\%ENV:\\n @env\\n\" if @env; \
1116 print \" \\@INC:\\n @INC\\n\";");
1119 PL_Sv = newSVpv("config_vars(qw(",0);
1120 sv_catpv(PL_Sv, ++s);
1121 sv_catpv(PL_Sv, "))");
1124 av_push(PL_preambleav, PL_Sv);
1125 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1128 PL_doextract = TRUE;
1136 if (!*++s || isSPACE(*s)) {
1140 /* catch use of gnu style long options */
1141 if (strEQ(s, "version")) {
1145 if (strEQ(s, "help")) {
1152 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1158 #ifndef SECURE_INTERNAL_GETENV
1161 (s = PerlEnv_getenv("PERL5OPT")))
1165 if (*s == '-' && *(s+1) == 'T')
1178 if (!strchr("DIMUdmw", *s))
1179 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1180 s = moreswitches(s);
1186 scriptname = argv[0];
1189 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1191 else if (scriptname == Nullch) {
1193 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1201 open_script(scriptname,dosearch,sv,&fdscript);
1203 validate_suid(validarg, scriptname,fdscript);
1206 #if defined(SIGCHLD) || defined(SIGCLD)
1209 # define SIGCHLD SIGCLD
1211 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1212 if (sigstate == SIG_IGN) {
1213 if (ckWARN(WARN_SIGNAL))
1214 Perl_warner(aTHX_ WARN_SIGNAL,
1215 "Can't ignore signal CHLD, forcing to default");
1216 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1222 #ifdef MACOS_TRADITIONAL
1223 if (PL_doextract || gMacPerl_AlwaysExtract) {
1228 if (cddir && PerlDir_chdir(cddir) < 0)
1229 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1233 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1234 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1235 CvUNIQUE_on(PL_compcv);
1237 PL_comppad = newAV();
1238 av_push(PL_comppad, Nullsv);
1239 PL_curpad = AvARRAY(PL_comppad);
1240 PL_comppad_name = newAV();
1241 PL_comppad_name_fill = 0;
1242 PL_min_intro_pending = 0;
1245 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1246 PL_curpad[0] = (SV*)newAV();
1247 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1248 CvOWNER(PL_compcv) = 0;
1249 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1250 MUTEX_INIT(CvMUTEXP(PL_compcv));
1251 #endif /* USE_THREADS */
1253 comppadlist = newAV();
1254 AvREAL_off(comppadlist);
1255 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1256 av_store(comppadlist, 1, (SV*)PL_comppad);
1257 CvPADLIST(PL_compcv) = comppadlist;
1259 boot_core_UNIVERSAL();
1261 boot_core_xsutils();
1265 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1267 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1273 # ifdef HAS_SOCKS5_INIT
1274 socks5_init(argv[0]);
1280 init_predump_symbols();
1281 /* init_postdump_symbols not currently designed to be called */
1282 /* more than once (ENV isn't cleared first, for example) */
1283 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1285 init_postdump_symbols(argc,argv,env);
1289 /* now parse the script */
1291 SETERRNO(0,SS$_NORMAL);
1293 #ifdef MACOS_TRADITIONAL
1294 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1296 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1298 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1299 MacPerl_MPWFileName(PL_origfilename));
1303 if (yyparse() || PL_error_count) {
1305 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1307 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1312 CopLINE_set(PL_curcop, 0);
1313 PL_curstash = PL_defstash;
1314 PL_preprocess = FALSE;
1316 SvREFCNT_dec(PL_e_script);
1317 PL_e_script = Nullsv;
1320 /* now that script is parsed, we can modify record separator */
1321 SvREFCNT_dec(PL_rs);
1322 PL_rs = SvREFCNT_inc(PL_nrs);
1323 sv_setsv(get_sv("/", TRUE), PL_rs);
1328 SAVECOPFILE(PL_curcop);
1329 SAVECOPLINE(PL_curcop);
1330 gv_check(PL_defstash);
1337 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1338 dump_mstats("after compilation:");
1347 =for apidoc perl_run
1349 Tells a Perl interpreter to run. See L<perlembed>.
1364 oldscope = PL_scopestack_ix;
1366 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1368 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1374 cxstack_ix = -1; /* start context stack again */
1376 case 0: /* normal completion */
1377 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1382 case 2: /* my_exit() */
1383 while (PL_scopestack_ix > oldscope)
1386 PL_curstash = PL_defstash;
1387 if (PL_endav && !PL_minus_c)
1388 call_list(oldscope, PL_endav);
1390 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1391 dump_mstats("after execution: ");
1393 ret = STATUS_NATIVE_EXPORT;
1397 POPSTACK_TO(PL_mainstack);
1400 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1410 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1412 S_vrun_body(pTHX_ va_list args)
1414 I32 oldscope = va_arg(args, I32);
1416 return run_body(oldscope);
1422 S_run_body(pTHX_ I32 oldscope)
1424 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1425 PL_sawampersand ? "Enabling" : "Omitting"));
1427 if (!PL_restartop) {
1428 DEBUG_x(dump_all());
1429 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1430 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1434 #ifdef MACOS_TRADITIONAL
1435 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1437 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1441 if (PERLDB_SINGLE && PL_DBsingle)
1442 sv_setiv(PL_DBsingle, 1);
1444 call_list(oldscope, PL_initav);
1450 PL_op = PL_restartop;
1454 else if (PL_main_start) {
1455 CvDEPTH(PL_main_cv) = 1;
1456 PL_op = PL_main_start;
1466 =for apidoc p||get_sv
1468 Returns the SV of the specified Perl scalar. If C<create> is set and the
1469 Perl variable does not exist then it will be created. If C<create> is not
1470 set and the variable does not exist then NULL is returned.
1476 Perl_get_sv(pTHX_ const char *name, I32 create)
1480 if (name[1] == '\0' && !isALPHA(name[0])) {
1481 PADOFFSET tmp = find_threadsv(name);
1482 if (tmp != NOT_IN_PAD)
1483 return THREADSV(tmp);
1485 #endif /* USE_THREADS */
1486 gv = gv_fetchpv(name, create, SVt_PV);
1493 =for apidoc p||get_av
1495 Returns the AV of the specified Perl array. If C<create> is set and the
1496 Perl variable does not exist then it will be created. If C<create> is not
1497 set and the variable does not exist then NULL is returned.
1503 Perl_get_av(pTHX_ const char *name, I32 create)
1505 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1514 =for apidoc p||get_hv
1516 Returns the HV of the specified Perl hash. If C<create> is set and the
1517 Perl variable does not exist then it will be created. If C<create> is not
1518 set and the variable does not exist then NULL is returned.
1524 Perl_get_hv(pTHX_ const char *name, I32 create)
1526 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1535 =for apidoc p||get_cv
1537 Returns the CV of the specified Perl subroutine. If C<create> is set and
1538 the Perl subroutine does not exist then it will be declared (which has the
1539 same effect as saying C<sub name;>). If C<create> is not set and the
1540 subroutine does not exist then NULL is returned.
1546 Perl_get_cv(pTHX_ const char *name, I32 create)
1548 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1549 /* XXX unsafe for threads if eval_owner isn't held */
1550 /* XXX this is probably not what they think they're getting.
1551 * It has the same effect as "sub name;", i.e. just a forward
1553 if (create && !GvCVu(gv))
1554 return newSUB(start_subparse(FALSE, 0),
1555 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1563 /* Be sure to refetch the stack pointer after calling these routines. */
1566 =for apidoc p||call_argv
1568 Performs a callback to the specified Perl sub. See L<perlcall>.
1574 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1576 /* See G_* flags in cop.h */
1577 /* null terminated arg list */
1584 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1589 return call_pv(sub_name, flags);
1593 =for apidoc p||call_pv
1595 Performs a callback to the specified Perl sub. See L<perlcall>.
1601 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1602 /* name of the subroutine */
1603 /* See G_* flags in cop.h */
1605 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1609 =for apidoc p||call_method
1611 Performs a callback to the specified Perl method. The blessed object must
1612 be on the stack. See L<perlcall>.
1618 Perl_call_method(pTHX_ const char *methname, I32 flags)
1619 /* name of the subroutine */
1620 /* See G_* flags in cop.h */
1622 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1625 /* May be called with any of a CV, a GV, or an SV containing the name. */
1627 =for apidoc p||call_sv
1629 Performs a callback to the Perl sub whose name is in the SV. See
1636 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1637 /* See G_* flags in cop.h */
1640 LOGOP myop; /* fake syntax tree node */
1645 bool oldcatch = CATCH_GET;
1650 if (flags & G_DISCARD) {
1655 Zero(&myop, 1, LOGOP);
1656 myop.op_next = Nullop;
1657 if (!(flags & G_NOARGS))
1658 myop.op_flags |= OPf_STACKED;
1659 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1660 (flags & G_ARRAY) ? OPf_WANT_LIST :
1665 EXTEND(PL_stack_sp, 1);
1666 *++PL_stack_sp = sv;
1668 oldscope = PL_scopestack_ix;
1670 if (PERLDB_SUB && PL_curstash != PL_debstash
1671 /* Handle first BEGIN of -d. */
1672 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1673 /* Try harder, since this may have been a sighandler, thus
1674 * curstash may be meaningless. */
1675 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1676 && !(flags & G_NODEBUG))
1677 PL_op->op_private |= OPpENTERSUB_DB;
1679 if (flags & G_METHOD) {
1680 Zero(&method_op, 1, UNOP);
1681 method_op.op_next = PL_op;
1682 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1683 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1684 PL_op = (OP*)&method_op;
1687 if (!(flags & G_EVAL)) {
1689 call_body((OP*)&myop, FALSE);
1690 retval = PL_stack_sp - (PL_stack_base + oldmark);
1691 CATCH_SET(oldcatch);
1694 myop.op_other = (OP*)&myop;
1696 /* we're trying to emulate pp_entertry() here */
1698 register PERL_CONTEXT *cx;
1699 I32 gimme = GIMME_V;
1704 push_return(Nullop);
1705 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1707 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1709 PL_in_eval = EVAL_INEVAL;
1710 if (flags & G_KEEPERR)
1711 PL_in_eval |= EVAL_KEEPERR;
1717 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1719 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1726 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1728 call_body((OP*)&myop, FALSE);
1730 retval = PL_stack_sp - (PL_stack_base + oldmark);
1731 if (!(flags & G_KEEPERR))
1738 /* my_exit() was called */
1739 PL_curstash = PL_defstash;
1742 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1743 Perl_croak(aTHX_ "Callback called exit");
1748 PL_op = PL_restartop;
1752 PL_stack_sp = PL_stack_base + oldmark;
1753 if (flags & G_ARRAY)
1757 *++PL_stack_sp = &PL_sv_undef;
1762 if (PL_scopestack_ix > oldscope) {
1766 register PERL_CONTEXT *cx;
1778 if (flags & G_DISCARD) {
1779 PL_stack_sp = PL_stack_base + oldmark;
1788 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1790 S_vcall_body(pTHX_ va_list args)
1792 OP *myop = va_arg(args, OP*);
1793 int is_eval = va_arg(args, int);
1795 call_body(myop, is_eval);
1801 S_call_body(pTHX_ OP *myop, int is_eval)
1803 if (PL_op == myop) {
1805 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1807 PL_op = Perl_pp_entersub(aTHX); /* this does */
1813 /* Eval a string. The G_EVAL flag is always assumed. */
1816 =for apidoc p||eval_sv
1818 Tells Perl to C<eval> the string in the SV.
1824 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1826 /* See G_* flags in cop.h */
1829 UNOP myop; /* fake syntax tree node */
1830 I32 oldmark = SP - PL_stack_base;
1837 if (flags & G_DISCARD) {
1844 Zero(PL_op, 1, UNOP);
1845 EXTEND(PL_stack_sp, 1);
1846 *++PL_stack_sp = sv;
1847 oldscope = PL_scopestack_ix;
1849 if (!(flags & G_NOARGS))
1850 myop.op_flags = OPf_STACKED;
1851 myop.op_next = Nullop;
1852 myop.op_type = OP_ENTEREVAL;
1853 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1854 (flags & G_ARRAY) ? OPf_WANT_LIST :
1856 if (flags & G_KEEPERR)
1857 myop.op_flags |= OPf_SPECIAL;
1859 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1861 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1868 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1870 call_body((OP*)&myop,TRUE);
1872 retval = PL_stack_sp - (PL_stack_base + oldmark);
1873 if (!(flags & G_KEEPERR))
1880 /* my_exit() was called */
1881 PL_curstash = PL_defstash;
1884 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1885 Perl_croak(aTHX_ "Callback called exit");
1890 PL_op = PL_restartop;
1894 PL_stack_sp = PL_stack_base + oldmark;
1895 if (flags & G_ARRAY)
1899 *++PL_stack_sp = &PL_sv_undef;
1905 if (flags & G_DISCARD) {
1906 PL_stack_sp = PL_stack_base + oldmark;
1916 =for apidoc p||eval_pv
1918 Tells Perl to C<eval> the given string and return an SV* result.
1924 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1927 SV* sv = newSVpv(p, 0);
1929 eval_sv(sv, G_SCALAR);
1936 if (croak_on_error && SvTRUE(ERRSV)) {
1938 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1944 /* Require a module. */
1947 =for apidoc p||require_pv
1949 Tells Perl to C<require> a module.
1955 Perl_require_pv(pTHX_ const char *pv)
1959 PUSHSTACKi(PERLSI_REQUIRE);
1961 sv = sv_newmortal();
1962 sv_setpv(sv, "require '");
1965 eval_sv(sv, G_DISCARD);
1971 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
1975 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
1976 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1980 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
1982 /* This message really ought to be max 23 lines.
1983 * Removed -h because the user already knows that opton. Others? */
1985 static char *usage_msg[] = {
1986 "-0[octal] specify record separator (\\0, if no argument)",
1987 "-a autosplit mode with -n or -p (splits $_ into @F)",
1988 "-C enable native wide character system interfaces",
1989 "-c check syntax only (runs BEGIN and CHECK blocks)",
1990 "-d[:debugger] run program under debugger",
1991 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1992 "-e 'command' one line of program (several -e's allowed, omit programfile)",
1993 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
1994 "-i[extension] edit <> files in place (makes backup if extension supplied)",
1995 "-Idirectory specify @INC/#include directory (several -I's allowed)",
1996 "-l[octal] enable line ending processing, specifies line terminator",
1997 "-[mM][-]module execute `use/no module...' before executing program",
1998 "-n assume 'while (<>) { ... }' loop around program",
1999 "-p assume loop like -n but print line also, like sed",
2000 "-P run program through C preprocessor before compilation",
2001 "-s enable rudimentary parsing for switches after programfile",
2002 "-S look for programfile using PATH environment variable",
2003 "-T enable tainting checks",
2004 "-u dump core after parsing program",
2005 "-U allow unsafe operations",
2006 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2007 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2008 "-w enable many useful warnings (RECOMMENDED)",
2009 "-W enable all warnings",
2010 "-X disable all warnings",
2011 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2015 char **p = usage_msg;
2017 PerlIO_printf(PerlIO_stdout(),
2018 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2021 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2024 /* This routine handles any switches that can be given during run */
2027 Perl_moreswitches(pTHX_ char *s)
2035 numlen = 0; /* disallow underscores */
2036 rschar = (U32)scan_oct(s, 4, &numlen);
2037 SvREFCNT_dec(PL_nrs);
2038 if (rschar & ~((U8)~0))
2039 PL_nrs = &PL_sv_undef;
2040 else if (!rschar && numlen >= 2)
2041 PL_nrs = newSVpvn("", 0);
2044 PL_nrs = newSVpvn(&ch, 1);
2049 PL_widesyscalls = TRUE;
2054 PL_splitstr = savepv(s + 1);
2068 /* The following permits -d:Mod to accepts arguments following an =
2069 in the fashion that -MSome::Mod does. */
2070 if (*s == ':' || *s == '=') {
2073 sv = newSVpv("use Devel::", 0);
2075 /* We now allow -d:Module=Foo,Bar */
2076 while(isALNUM(*s) || *s==':') ++s;
2078 sv_catpv(sv, start);
2080 sv_catpvn(sv, start, s-start);
2081 sv_catpv(sv, " split(/,/,q{");
2086 my_setenv("PERL5DB", SvPV(sv, PL_na));
2089 PL_perldb = PERLDB_ALL;
2097 if (isALPHA(s[1])) {
2098 static char debopts[] = "psltocPmfrxuLHXDST";
2101 for (s++; *s && (d = strchr(debopts,*s)); s++)
2102 PL_debug |= 1 << (d - debopts);
2105 PL_debug = atoi(s+1);
2106 for (s++; isDIGIT(*s); s++) ;
2108 PL_debug |= 0x80000000;
2110 if (ckWARN_d(WARN_DEBUGGING))
2111 Perl_warner(aTHX_ WARN_DEBUGGING,
2112 "Recompile perl with -DDEBUGGING to use -D switch\n");
2113 for (s++; isALNUM(*s); s++) ;
2119 usage(PL_origargv[0]);
2123 Safefree(PL_inplace);
2124 PL_inplace = savepv(s+1);
2126 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2129 if (*s == '-') /* Additional switches on #! line. */
2133 case 'I': /* -I handled both here and in parse_perl() */
2136 while (*s && isSPACE(*s))
2141 /* ignore trailing spaces (possibly followed by other switches) */
2143 for (e = p; *e && !isSPACE(*e); e++) ;
2147 } while (*p && *p != '-');
2148 e = savepvn(s, e-s);
2149 incpush(e, TRUE, TRUE);
2156 Perl_croak(aTHX_ "No directory specified for -I");
2164 PL_ors = savepv("\n");
2166 numlen = 0; /* disallow underscores */
2167 *PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2171 if (RsPARA(PL_nrs)) {
2176 PL_ors = SvPV(PL_nrs, PL_orslen);
2177 PL_ors = savepvn(PL_ors, PL_orslen);
2181 forbid_setid("-M"); /* XXX ? */
2184 forbid_setid("-m"); /* XXX ? */
2189 /* -M-foo == 'no foo' */
2190 if (*s == '-') { use = "no "; ++s; }
2191 sv = newSVpv(use,0);
2193 /* We allow -M'Module qw(Foo Bar)' */
2194 while(isALNUM(*s) || *s==':') ++s;
2196 sv_catpv(sv, start);
2197 if (*(start-1) == 'm') {
2199 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2200 sv_catpv( sv, " ()");
2204 Perl_croak(aTHX_ "Module name required with -%c option",
2206 sv_catpvn(sv, start, s-start);
2207 sv_catpv(sv, " split(/,/,q{");
2213 PL_preambleav = newAV();
2214 av_push(PL_preambleav, sv);
2217 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2229 PL_doswitches = TRUE;
2234 Perl_croak(aTHX_ "Too late for \"-T\" option");
2238 #ifdef MACOS_TRADITIONAL
2239 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2241 PL_do_undump = TRUE;
2249 PerlIO_printf(PerlIO_stdout(),
2250 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2251 PL_patchlevel, ARCHNAME));
2252 #if defined(LOCAL_PATCH_COUNT)
2253 if (LOCAL_PATCH_COUNT > 0)
2254 PerlIO_printf(PerlIO_stdout(),
2255 "\n(with %d registered patch%s, "
2256 "see perl -V for more detail)",
2257 (int)LOCAL_PATCH_COUNT,
2258 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2261 PerlIO_printf(PerlIO_stdout(),
2262 "\n\nCopyright 1987-2000, Larry Wall\n");
2263 #ifdef MACOS_TRADITIONAL
2264 PerlIO_printf(PerlIO_stdout(),
2265 "\nMacOS port Copyright (c) 1991-2000, Matthias Neeracher\n");
2268 PerlIO_printf(PerlIO_stdout(),
2269 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2272 PerlIO_printf(PerlIO_stdout(),
2273 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2274 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2277 PerlIO_printf(PerlIO_stdout(),
2278 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2279 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2282 PerlIO_printf(PerlIO_stdout(),
2283 "atariST series port, ++jrb bammi@cadence.com\n");
2286 PerlIO_printf(PerlIO_stdout(),
2287 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2290 PerlIO_printf(PerlIO_stdout(),
2291 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
2294 PerlIO_printf(PerlIO_stdout(),
2295 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2298 PerlIO_printf(PerlIO_stdout(),
2299 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2302 PerlIO_printf(PerlIO_stdout(),
2303 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2306 PerlIO_printf(PerlIO_stdout(),
2307 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2310 PerlIO_printf(PerlIO_stdout(),
2311 "MiNT port by Guido Flohr, 1997-1999\n");
2314 PerlIO_printf(PerlIO_stdout(),
2315 "EPOC port by Olaf Flebbe, 1999-2000\n");
2317 #ifdef BINARY_BUILD_NOTICE
2318 BINARY_BUILD_NOTICE;
2320 PerlIO_printf(PerlIO_stdout(),
2322 Perl may be copied only under the terms of either the Artistic License or the\n\
2323 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2324 Complete documentation for Perl, including FAQ lists, should be found on\n\
2325 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2326 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2329 if (! (PL_dowarn & G_WARN_ALL_MASK))
2330 PL_dowarn |= G_WARN_ON;
2334 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2335 PL_compiling.cop_warnings = pWARN_ALL ;
2339 PL_dowarn = G_WARN_ALL_OFF;
2340 PL_compiling.cop_warnings = pWARN_NONE ;
2345 if (s[1] == '-') /* Additional switches on #! line. */
2350 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2356 #ifdef ALTERNATE_SHEBANG
2357 case 'S': /* OS/2 needs -S on "extproc" line. */
2365 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2370 /* compliments of Tom Christiansen */
2372 /* unexec() can be found in the Gnu emacs distribution */
2373 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2376 Perl_my_unexec(pTHX)
2384 prog = newSVpv(BIN_EXP, 0);
2385 sv_catpv(prog, "/perl");
2386 file = newSVpv(PL_origfilename, 0);
2387 sv_catpv(file, ".perldump");
2389 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2390 /* unexec prints msg to stderr in case of failure */
2391 PerlProc_exit(status);
2394 # include <lib$routines.h>
2395 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2397 ABORT(); /* for use with undump */
2402 /* initialize curinterp */
2407 #ifdef PERL_OBJECT /* XXX kludge */
2410 PL_chopset = " \n-"; \
2411 PL_copline = NOLINE; \
2412 PL_curcop = &PL_compiling;\
2413 PL_curcopdb = NULL; \
2415 PL_dumpindent = 4; \
2416 PL_laststatval = -1; \
2417 PL_laststype = OP_STAT; \
2418 PL_maxscream = -1; \
2419 PL_maxsysfd = MAXSYSFD; \
2420 PL_statname = Nullsv; \
2421 PL_tmps_floor = -1; \
2423 PL_op_mask = NULL; \
2424 PL_laststatval = -1; \
2425 PL_laststype = OP_STAT; \
2426 PL_mess_sv = Nullsv; \
2427 PL_splitstr = " "; \
2428 PL_generation = 100; \
2429 PL_exitlist = NULL; \
2430 PL_exitlistlen = 0; \
2432 PL_in_clean_objs = FALSE; \
2433 PL_in_clean_all = FALSE; \
2434 PL_profiledata = NULL; \
2436 PL_rsfp_filters = Nullav; \
2441 # ifdef MULTIPLICITY
2442 # define PERLVAR(var,type)
2443 # define PERLVARA(var,n,type)
2444 # if defined(PERL_IMPLICIT_CONTEXT)
2445 # if defined(USE_THREADS)
2446 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2447 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2448 # else /* !USE_THREADS */
2449 # define PERLVARI(var,type,init) aTHX->var = init;
2450 # define PERLVARIC(var,type,init) aTHX->var = init;
2451 # endif /* USE_THREADS */
2453 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2454 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2456 # include "intrpvar.h"
2457 # ifndef USE_THREADS
2458 # include "thrdvar.h"
2465 # define PERLVAR(var,type)
2466 # define PERLVARA(var,n,type)
2467 # define PERLVARI(var,type,init) PL_##var = init;
2468 # define PERLVARIC(var,type,init) PL_##var = init;
2469 # include "intrpvar.h"
2470 # ifndef USE_THREADS
2471 # include "thrdvar.h"
2483 S_init_main_stash(pTHX)
2487 /* Note that strtab is a rather special HV. Assumptions are made
2488 about not iterating on it, and not adding tie magic to it.
2489 It is properly deallocated in perl_destruct() */
2490 PL_strtab = newHV();
2492 MUTEX_INIT(&PL_strtab_mutex);
2494 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2495 hv_ksplit(PL_strtab, 512);
2497 PL_curstash = PL_defstash = newHV();
2498 PL_curstname = newSVpvn("main",4);
2499 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2500 SvREFCNT_dec(GvHV(gv));
2501 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2503 HvNAME(PL_defstash) = savepv("main");
2504 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2505 GvMULTI_on(PL_incgv);
2506 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2507 GvMULTI_on(PL_hintgv);
2508 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2509 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2510 GvMULTI_on(PL_errgv);
2511 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2512 GvMULTI_on(PL_replgv);
2513 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2514 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2515 sv_setpvn(ERRSV, "", 0);
2516 PL_curstash = PL_defstash;
2517 CopSTASH_set(&PL_compiling, PL_defstash);
2518 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2519 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2520 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2521 /* We must init $/ before switches are processed. */
2522 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2526 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2531 PL_origfilename = savepv("-e");
2534 /* if find_script() returns, it returns a malloc()-ed value */
2535 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2537 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2538 char *s = scriptname + 8;
2539 *fdscript = atoi(s);
2543 scriptname = savepv(s + 1);
2544 Safefree(PL_origfilename);
2545 PL_origfilename = scriptname;
2551 Safefree(CopFILE(PL_curcop));
2553 SvREFCNT_dec(CopFILEGV(PL_curcop));
2555 CopFILE_set(PL_curcop, PL_origfilename);
2556 if (strEQ(PL_origfilename,"-"))
2558 if (*fdscript >= 0) {
2559 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2560 #if defined(HAS_FCNTL) && defined(F_SETFD)
2562 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2565 else if (PL_preprocess) {
2566 char *cpp_cfg = CPPSTDIN;
2567 SV *cpp = newSVpvn("",0);
2568 SV *cmd = NEWSV(0,0);
2570 if (strEQ(cpp_cfg, "cppstdin"))
2571 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2572 sv_catpv(cpp, cpp_cfg);
2574 sv_catpvn(sv, "-I", 2);
2575 sv_catpv(sv,PRIVLIB_EXP);
2577 #if defined(MSDOS) || defined(WIN32)
2578 Perl_sv_setpvf(aTHX_ cmd, "\
2579 sed %s -e \"/^[^#]/b\" \
2580 -e \"/^#[ ]*include[ ]/b\" \
2581 -e \"/^#[ ]*define[ ]/b\" \
2582 -e \"/^#[ ]*if[ ]/b\" \
2583 -e \"/^#[ ]*ifdef[ ]/b\" \
2584 -e \"/^#[ ]*ifndef[ ]/b\" \
2585 -e \"/^#[ ]*else/b\" \
2586 -e \"/^#[ ]*elif[ ]/b\" \
2587 -e \"/^#[ ]*undef[ ]/b\" \
2588 -e \"/^#[ ]*endif/b\" \
2590 %s | %"SVf" -C %"SVf" %s",
2591 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2594 Perl_sv_setpvf(aTHX_ cmd, "\
2595 %s %s -e '/^[^#]/b' \
2596 -e '/^#[ ]*include[ ]/b' \
2597 -e '/^#[ ]*define[ ]/b' \
2598 -e '/^#[ ]*if[ ]/b' \
2599 -e '/^#[ ]*ifdef[ ]/b' \
2600 -e '/^#[ ]*ifndef[ ]/b' \
2601 -e '/^#[ ]*else/b' \
2602 -e '/^#[ ]*elif[ ]/b' \
2603 -e '/^#[ ]*undef[ ]/b' \
2604 -e '/^#[ ]*endif/b' \
2606 %s | %"SVf" %"SVf" %s",
2608 Perl_sv_setpvf(aTHX_ cmd, "\
2609 %s %s -e '/^[^#]/b' \
2610 -e '/^#[ ]*include[ ]/b' \
2611 -e '/^#[ ]*define[ ]/b' \
2612 -e '/^#[ ]*if[ ]/b' \
2613 -e '/^#[ ]*ifdef[ ]/b' \
2614 -e '/^#[ ]*ifndef[ ]/b' \
2615 -e '/^#[ ]*else/b' \
2616 -e '/^#[ ]*elif[ ]/b' \
2617 -e '/^#[ ]*undef[ ]/b' \
2618 -e '/^#[ ]*endif/b' \
2620 %s | %"SVf" -C %"SVf" %s",
2627 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2629 scriptname, cpp, sv, CPPMINUS);
2630 PL_doextract = FALSE;
2631 #ifdef IAMSUID /* actually, this is caught earlier */
2632 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2634 (void)seteuid(PL_uid); /* musn't stay setuid root */
2637 (void)setreuid((Uid_t)-1, PL_uid);
2639 #ifdef HAS_SETRESUID
2640 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2642 PerlProc_setuid(PL_uid);
2646 if (PerlProc_geteuid() != PL_uid)
2647 Perl_croak(aTHX_ "Can't do seteuid!\n");
2649 #endif /* IAMSUID */
2650 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2654 else if (!*scriptname) {
2655 forbid_setid("program input from stdin");
2656 PL_rsfp = PerlIO_stdin();
2659 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2660 #if defined(HAS_FCNTL) && defined(F_SETFD)
2662 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2667 #ifndef IAMSUID /* in case script is not readable before setuid */
2669 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2670 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2673 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2674 (int)PERL_REVISION, (int)PERL_VERSION,
2675 (int)PERL_SUBVERSION), PL_origargv);
2676 Perl_croak(aTHX_ "Can't do setuid\n");
2680 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2681 CopFILE(PL_curcop), Strerror(errno));
2686 * I_SYSSTATVFS HAS_FSTATVFS
2688 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2689 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2690 * here so that metaconfig picks them up. */
2694 S_fd_on_nosuid_fs(pTHX_ int fd)
2696 int check_okay = 0; /* able to do all the required sys/libcalls */
2697 int on_nosuid = 0; /* the fd is on a nosuid fs */
2699 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2700 * fstatvfs() is UNIX98.
2701 * fstatfs() is 4.3 BSD.
2702 * ustat()+getmnt() is pre-4.3 BSD.
2703 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2704 * an irrelevant filesystem while trying to reach the right one.
2707 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2709 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2710 defined(HAS_FSTATVFS)
2711 # define FD_ON_NOSUID_CHECK_OKAY
2712 struct statvfs stfs;
2714 check_okay = fstatvfs(fd, &stfs) == 0;
2715 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2716 # endif /* fstatvfs */
2718 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2719 defined(PERL_MOUNT_NOSUID) && \
2720 defined(HAS_FSTATFS) && \
2721 defined(HAS_STRUCT_STATFS) && \
2722 defined(HAS_STRUCT_STATFS_F_FLAGS)
2723 # define FD_ON_NOSUID_CHECK_OKAY
2726 check_okay = fstatfs(fd, &stfs) == 0;
2727 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2728 # endif /* fstatfs */
2730 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2731 defined(PERL_MOUNT_NOSUID) && \
2732 defined(HAS_FSTAT) && \
2733 defined(HAS_USTAT) && \
2734 defined(HAS_GETMNT) && \
2735 defined(HAS_STRUCT_FS_DATA) && \
2737 # define FD_ON_NOSUID_CHECK_OKAY
2740 if (fstat(fd, &fdst) == 0) {
2742 if (ustat(fdst.st_dev, &us) == 0) {
2744 /* NOSTAT_ONE here because we're not examining fields which
2745 * vary between that case and STAT_ONE. */
2746 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2747 size_t cmplen = sizeof(us.f_fname);
2748 if (sizeof(fsd.fd_req.path) < cmplen)
2749 cmplen = sizeof(fsd.fd_req.path);
2750 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2751 fdst.st_dev == fsd.fd_req.dev) {
2753 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2759 # endif /* fstat+ustat+getmnt */
2761 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2762 defined(HAS_GETMNTENT) && \
2763 defined(HAS_HASMNTOPT) && \
2764 defined(MNTOPT_NOSUID)
2765 # define FD_ON_NOSUID_CHECK_OKAY
2766 FILE *mtab = fopen("/etc/mtab", "r");
2767 struct mntent *entry;
2768 struct stat stb, fsb;
2770 if (mtab && (fstat(fd, &stb) == 0)) {
2771 while (entry = getmntent(mtab)) {
2772 if (stat(entry->mnt_dir, &fsb) == 0
2773 && fsb.st_dev == stb.st_dev)
2775 /* found the filesystem */
2777 if (hasmntopt(entry, MNTOPT_NOSUID))
2780 } /* A single fs may well fail its stat(). */
2785 # endif /* getmntent+hasmntopt */
2788 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2791 #endif /* IAMSUID */
2794 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2800 /* do we need to emulate setuid on scripts? */
2802 /* This code is for those BSD systems that have setuid #! scripts disabled
2803 * in the kernel because of a security problem. Merely defining DOSUID
2804 * in perl will not fix that problem, but if you have disabled setuid
2805 * scripts in the kernel, this will attempt to emulate setuid and setgid
2806 * on scripts that have those now-otherwise-useless bits set. The setuid
2807 * root version must be called suidperl or sperlN.NNN. If regular perl
2808 * discovers that it has opened a setuid script, it calls suidperl with
2809 * the same argv that it had. If suidperl finds that the script it has
2810 * just opened is NOT setuid root, it sets the effective uid back to the
2811 * uid. We don't just make perl setuid root because that loses the
2812 * effective uid we had before invoking perl, if it was different from the
2815 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2816 * be defined in suidperl only. suidperl must be setuid root. The
2817 * Configure script will set this up for you if you want it.
2823 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2824 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2825 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2830 #ifndef HAS_SETREUID
2831 /* On this access check to make sure the directories are readable,
2832 * there is actually a small window that the user could use to make
2833 * filename point to an accessible directory. So there is a faint
2834 * chance that someone could execute a setuid script down in a
2835 * non-accessible directory. I don't know what to do about that.
2836 * But I don't think it's too important. The manual lies when
2837 * it says access() is useful in setuid programs.
2839 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2840 Perl_croak(aTHX_ "Permission denied");
2842 /* If we can swap euid and uid, then we can determine access rights
2843 * with a simple stat of the file, and then compare device and
2844 * inode to make sure we did stat() on the same file we opened.
2845 * Then we just have to make sure he or she can execute it.
2848 struct stat tmpstatbuf;
2852 setreuid(PL_euid,PL_uid) < 0
2855 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2858 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2859 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2860 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2861 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2862 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2863 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2864 Perl_croak(aTHX_ "Permission denied");
2866 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2867 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2868 (void)PerlIO_close(PL_rsfp);
2869 Perl_croak(aTHX_ "Permission denied\n");
2873 setreuid(PL_uid,PL_euid) < 0
2875 # if defined(HAS_SETRESUID)
2876 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2879 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2880 Perl_croak(aTHX_ "Can't reswap uid and euid");
2881 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2882 Perl_croak(aTHX_ "Permission denied\n");
2884 #endif /* HAS_SETREUID */
2885 #endif /* IAMSUID */
2887 if (!S_ISREG(PL_statbuf.st_mode))
2888 Perl_croak(aTHX_ "Permission denied");
2889 if (PL_statbuf.st_mode & S_IWOTH)
2890 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2891 PL_doswitches = FALSE; /* -s is insecure in suid */
2892 CopLINE_inc(PL_curcop);
2893 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2894 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2895 Perl_croak(aTHX_ "No #! line");
2896 s = SvPV(PL_linestr,n_a)+2;
2898 while (!isSPACE(*s)) s++;
2899 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2900 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2901 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2902 Perl_croak(aTHX_ "Not a perl script");
2903 while (*s == ' ' || *s == '\t') s++;
2905 * #! arg must be what we saw above. They can invoke it by
2906 * mentioning suidperl explicitly, but they may not add any strange
2907 * arguments beyond what #! says if they do invoke suidperl that way.
2909 len = strlen(validarg);
2910 if (strEQ(validarg," PHOOEY ") ||
2911 strnNE(s,validarg,len) || !isSPACE(s[len]))
2912 Perl_croak(aTHX_ "Args must match #! line");
2915 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2916 PL_euid == PL_statbuf.st_uid)
2918 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2919 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2920 #endif /* IAMSUID */
2922 if (PL_euid) { /* oops, we're not the setuid root perl */
2923 (void)PerlIO_close(PL_rsfp);
2926 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2927 (int)PERL_REVISION, (int)PERL_VERSION,
2928 (int)PERL_SUBVERSION), PL_origargv);
2930 Perl_croak(aTHX_ "Can't do setuid\n");
2933 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2935 (void)setegid(PL_statbuf.st_gid);
2938 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2940 #ifdef HAS_SETRESGID
2941 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2943 PerlProc_setgid(PL_statbuf.st_gid);
2947 if (PerlProc_getegid() != PL_statbuf.st_gid)
2948 Perl_croak(aTHX_ "Can't do setegid!\n");
2950 if (PL_statbuf.st_mode & S_ISUID) {
2951 if (PL_statbuf.st_uid != PL_euid)
2953 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2956 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2958 #ifdef HAS_SETRESUID
2959 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2961 PerlProc_setuid(PL_statbuf.st_uid);
2965 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2966 Perl_croak(aTHX_ "Can't do seteuid!\n");
2968 else if (PL_uid) { /* oops, mustn't run as root */
2970 (void)seteuid((Uid_t)PL_uid);
2973 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2975 #ifdef HAS_SETRESUID
2976 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2978 PerlProc_setuid((Uid_t)PL_uid);
2982 if (PerlProc_geteuid() != PL_uid)
2983 Perl_croak(aTHX_ "Can't do seteuid!\n");
2986 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2987 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
2990 else if (PL_preprocess)
2991 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
2992 else if (fdscript >= 0)
2993 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
2995 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
2997 /* We absolutely must clear out any saved ids here, so we */
2998 /* exec the real perl, substituting fd script for scriptname. */
2999 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3000 PerlIO_rewind(PL_rsfp);
3001 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3002 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3003 if (!PL_origargv[which])
3004 Perl_croak(aTHX_ "Permission denied");
3005 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3006 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3007 #if defined(HAS_FCNTL) && defined(F_SETFD)
3008 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3010 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3011 (int)PERL_REVISION, (int)PERL_VERSION,
3012 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3013 Perl_croak(aTHX_ "Can't do setuid\n");
3014 #endif /* IAMSUID */
3016 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3017 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3018 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3019 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3021 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3024 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3025 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3026 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3027 /* not set-id, must be wrapped */
3033 S_find_beginning(pTHX)
3035 register char *s, *s2;
3037 /* skip forward in input to the real script? */
3040 #ifdef MACOS_TRADITIONAL
3041 /* Since the Mac OS does not honor !# arguments for us, we do it ourselves */
3043 while (PL_doextract || gMacPerl_AlwaysExtract) {
3044 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3045 if (!gMacPerl_AlwaysExtract)
3046 Perl_croak(aTHX_ "No Perl script found in input\n");
3048 if (PL_doextract) /* require explicit override ? */
3049 if (!OverrideExtract(PL_origfilename))
3050 Perl_croak(aTHX_ "User aborted script\n");
3052 PL_doextract = FALSE;
3054 /* Pater peccavi, file does not have #! */
3055 PerlIO_rewind(PL_rsfp);
3060 while (PL_doextract) {
3061 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3062 Perl_croak(aTHX_ "No Perl script found in input\n");
3064 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3065 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3066 PL_doextract = FALSE;
3067 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3069 while (*s == ' ' || *s == '\t') s++;
3071 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3072 if (strnEQ(s2-4,"perl",4))
3074 while ((s = moreswitches(s)))
3085 PL_uid = PerlProc_getuid();
3086 PL_euid = PerlProc_geteuid();
3087 PL_gid = PerlProc_getgid();
3088 PL_egid = PerlProc_getegid();
3090 PL_uid |= PL_gid << 16;
3091 PL_euid |= PL_egid << 16;
3093 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3097 S_forbid_setid(pTHX_ char *s)
3099 if (PL_euid != PL_uid)
3100 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3101 if (PL_egid != PL_gid)
3102 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3106 Perl_init_debugger(pTHX)
3108 HV *ostash = PL_curstash;
3110 PL_curstash = PL_debstash;
3111 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3112 AvREAL_off(PL_dbargs);
3113 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3114 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3115 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3116 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3117 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3118 sv_setiv(PL_DBsingle, 0);
3119 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3120 sv_setiv(PL_DBtrace, 0);
3121 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3122 sv_setiv(PL_DBsignal, 0);
3123 PL_curstash = ostash;
3126 #ifndef STRESS_REALLOC
3127 #define REASONABLE(size) (size)
3129 #define REASONABLE(size) (1) /* unreasonable */
3133 Perl_init_stacks(pTHX)
3135 /* start with 128-item stack and 8K cxstack */
3136 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3137 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3138 PL_curstackinfo->si_type = PERLSI_MAIN;
3139 PL_curstack = PL_curstackinfo->si_stack;
3140 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3142 PL_stack_base = AvARRAY(PL_curstack);
3143 PL_stack_sp = PL_stack_base;
3144 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3146 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3149 PL_tmps_max = REASONABLE(128);
3151 New(54,PL_markstack,REASONABLE(32),I32);
3152 PL_markstack_ptr = PL_markstack;
3153 PL_markstack_max = PL_markstack + REASONABLE(32);
3157 New(54,PL_scopestack,REASONABLE(32),I32);
3158 PL_scopestack_ix = 0;
3159 PL_scopestack_max = REASONABLE(32);
3161 New(54,PL_savestack,REASONABLE(128),ANY);
3162 PL_savestack_ix = 0;
3163 PL_savestack_max = REASONABLE(128);
3165 New(54,PL_retstack,REASONABLE(16),OP*);
3167 PL_retstack_max = REASONABLE(16);
3175 while (PL_curstackinfo->si_next)
3176 PL_curstackinfo = PL_curstackinfo->si_next;
3177 while (PL_curstackinfo) {
3178 PERL_SI *p = PL_curstackinfo->si_prev;
3179 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3180 Safefree(PL_curstackinfo->si_cxstack);
3181 Safefree(PL_curstackinfo);
3182 PL_curstackinfo = p;
3184 Safefree(PL_tmps_stack);
3185 Safefree(PL_markstack);
3186 Safefree(PL_scopestack);
3187 Safefree(PL_savestack);
3188 Safefree(PL_retstack);
3192 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3203 lex_start(PL_linestr);
3205 PL_subname = newSVpvn("main",4);
3209 S_init_predump_symbols(pTHX)
3214 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3215 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3216 GvMULTI_on(PL_stdingv);
3217 io = GvIOp(PL_stdingv);
3218 IoIFP(io) = PerlIO_stdin();
3219 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3221 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3223 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3226 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3228 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3230 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3232 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3233 GvMULTI_on(PL_stderrgv);
3234 io = GvIOp(PL_stderrgv);
3235 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3236 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3238 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3240 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3243 Safefree(PL_osname);
3244 PL_osname = savepv(OSNAME);
3248 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3254 argc--,argv++; /* skip name of script */
3255 if (PL_doswitches) {
3256 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3259 if (argv[0][1] == '-' && !argv[0][2]) {
3263 if ((s = strchr(argv[0], '='))) {
3265 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3268 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3271 PL_toptarget = NEWSV(0,0);
3272 sv_upgrade(PL_toptarget, SVt_PVFM);
3273 sv_setpvn(PL_toptarget, "", 0);
3274 PL_bodytarget = NEWSV(0,0);
3275 sv_upgrade(PL_bodytarget, SVt_PVFM);
3276 sv_setpvn(PL_bodytarget, "", 0);
3277 PL_formtarget = PL_bodytarget;
3280 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3281 #ifdef MACOS_TRADITIONAL
3282 /* $0 is not majick on a Mac */
3283 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3285 sv_setpv(GvSV(tmpgv),PL_origfilename);
3286 magicname("0", "0", 1);
3289 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3291 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3293 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3295 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3296 GvMULTI_on(PL_argvgv);
3297 (void)gv_AVadd(PL_argvgv);
3298 av_clear(GvAVn(PL_argvgv));
3299 for (; argc > 0; argc--,argv++) {
3300 SV *sv = newSVpv(argv[0],0);
3301 av_push(GvAVn(PL_argvgv),sv);
3302 if (PL_widesyscalls)
3303 (void)sv_utf8_decode(sv);
3306 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3308 GvMULTI_on(PL_envgv);
3309 hv = GvHVn(PL_envgv);
3310 hv_magic(hv, PL_envgv, 'E');
3311 #ifdef USE_ENVIRON_ARRAY
3312 /* Note that if the supplied env parameter is actually a copy
3313 of the global environ then it may now point to free'd memory
3314 if the environment has been modified since. To avoid this
3315 problem we treat env==NULL as meaning 'use the default'
3320 environ[0] = Nullch;
3321 for (; *env; env++) {
3322 if (!(s = strchr(*env,'=')))
3328 sv = newSVpv(s--,0);
3329 (void)hv_store(hv, *env, s - *env, sv, 0);
3331 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3332 /* Sins of the RTL. See note in my_setenv(). */
3333 (void)PerlEnv_putenv(savepv(*env));
3337 #ifdef DYNAMIC_ENV_FETCH
3338 HvNAME(hv) = savepv(ENV_HV_NAME);
3342 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3343 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3347 S_init_perllib(pTHX)
3352 s = PerlEnv_getenv("PERL5LIB");
3354 incpush(s, TRUE, TRUE);
3356 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3358 /* Treat PERL5?LIB as a possible search list logical name -- the
3359 * "natural" VMS idiom for a Unix path string. We allow each
3360 * element to be a set of |-separated directories for compatibility.
3364 if (my_trnlnm("PERL5LIB",buf,0))
3365 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3367 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3371 /* Use the ~-expanded versions of APPLLIB (undocumented),
3372 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3375 incpush(APPLLIB_EXP, TRUE, TRUE);
3379 incpush(ARCHLIB_EXP, FALSE, FALSE);
3381 #ifdef MACOS_TRADITIONAL
3383 struct stat tmpstatbuf;
3384 SV * privdir = NEWSV(55, 0);
3385 char * macperl = PerlEnv_getenv("MACPERL");
3390 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3391 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3392 incpush(SvPVX(privdir), TRUE, FALSE);
3393 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3394 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3395 incpush(SvPVX(privdir), TRUE, FALSE);
3397 SvREFCNT_dec(privdir);
3400 incpush(":", FALSE, FALSE);
3403 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3406 incpush(PRIVLIB_EXP, TRUE, FALSE);
3408 incpush(PRIVLIB_EXP, FALSE, FALSE);
3412 /* sitearch is always relative to sitelib on Windows for
3413 * DLL-based path intuition to work correctly */
3414 # if !defined(WIN32)
3415 incpush(SITEARCH_EXP, FALSE, FALSE);
3421 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3423 incpush(SITELIB_EXP, FALSE, FALSE);
3427 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3428 incpush(SITELIB_STEM, FALSE, TRUE);
3431 #ifdef PERL_VENDORARCH_EXP
3432 /* vendorarch is always relative to vendorlib on Windows for
3433 * DLL-based path intuition to work correctly */
3434 # if !defined(WIN32)
3435 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3439 #ifdef PERL_VENDORLIB_EXP
3441 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3443 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3447 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3448 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3451 #ifdef PERL_OTHERLIBDIRS
3452 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3456 incpush(".", FALSE, FALSE);
3457 #endif /* MACOS_TRADITIONAL */
3460 #if defined(DOSISH) || defined(EPOC)
3461 # define PERLLIB_SEP ';'
3464 # define PERLLIB_SEP '|'
3466 # if defined(MACOS_TRADITIONAL)
3467 # define PERLLIB_SEP ','
3469 # define PERLLIB_SEP ':'
3473 #ifndef PERLLIB_MANGLE
3474 # define PERLLIB_MANGLE(s,n) (s)
3478 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3480 SV *subdir = Nullsv;
3485 if (addsubdirs || addoldvers) {
3486 subdir = sv_newmortal();
3489 /* Break at all separators */
3491 SV *libdir = NEWSV(55,0);
3494 /* skip any consecutive separators */
3495 while ( *p == PERLLIB_SEP ) {
3496 /* Uncomment the next line for PATH semantics */
3497 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3501 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3502 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3507 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3508 p = Nullch; /* break out */
3510 #ifdef MACOS_TRADITIONAL
3511 if (!strchr(SvPVX(libdir), ':'))
3512 sv_insert(libdir, 0, 0, ":", 1);
3513 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3514 sv_catpv(libdir, ":");
3518 * BEFORE pushing libdir onto @INC we may first push version- and
3519 * archname-specific sub-directories.
3521 if (addsubdirs || addoldvers) {
3522 #ifdef PERL_INC_VERSION_LIST
3523 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3524 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3525 const char **incver;
3527 struct stat tmpstatbuf;
3532 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3534 while (unix[len-1] == '/') len--; /* Cosmetic */
3535 sv_usepvn(libdir,unix,len);
3538 PerlIO_printf(Perl_error_log,
3539 "Failed to unixify @INC element \"%s\"\n",
3543 #ifdef MACOS_TRADITIONAL
3544 #define PERL_AV_SUFFIX_FMT ""
3545 #define PERL_ARCH_FMT ":%s"
3547 #define PERL_AV_SUFFIX_FMT "/"
3548 #define PERL_ARCH_FMT "/%s"
3550 /* .../version/archname if -d .../version/archname */
3551 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT PERL_ARCH_FMT,
3553 (int)PERL_REVISION, (int)PERL_VERSION,
3554 (int)PERL_SUBVERSION, ARCHNAME);
3555 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3556 S_ISDIR(tmpstatbuf.st_mode))
3557 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3559 /* .../version if -d .../version */
3560 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT, libdir,
3561 (int)PERL_REVISION, (int)PERL_VERSION,
3562 (int)PERL_SUBVERSION);
3563 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3564 S_ISDIR(tmpstatbuf.st_mode))
3565 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3567 /* .../archname if -d .../archname */
3568 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3569 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3570 S_ISDIR(tmpstatbuf.st_mode))
3571 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3574 #ifdef PERL_INC_VERSION_LIST
3576 for (incver = incverlist; *incver; incver++) {
3577 /* .../xxx if -d .../xxx */
3578 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3579 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3580 S_ISDIR(tmpstatbuf.st_mode))
3581 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3587 /* finally push this lib directory on the end of @INC */
3588 av_push(GvAVn(PL_incgv), libdir);
3593 STATIC struct perl_thread *
3594 S_init_main_thread(pTHX)
3596 #if !defined(PERL_IMPLICIT_CONTEXT)
3597 struct perl_thread *thr;
3601 Newz(53, thr, 1, struct perl_thread);
3602 PL_curcop = &PL_compiling;
3603 thr->interp = PERL_GET_INTERP;
3604 thr->cvcache = newHV();
3605 thr->threadsv = newAV();
3606 /* thr->threadsvp is set when find_threadsv is called */
3607 thr->specific = newAV();
3608 thr->flags = THRf_R_JOINABLE;
3609 MUTEX_INIT(&thr->mutex);
3610 /* Handcraft thrsv similarly to mess_sv */
3611 New(53, PL_thrsv, 1, SV);
3612 Newz(53, xpv, 1, XPV);
3613 SvFLAGS(PL_thrsv) = SVt_PV;
3614 SvANY(PL_thrsv) = (void*)xpv;
3615 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3616 SvPVX(PL_thrsv) = (char*)thr;
3617 SvCUR_set(PL_thrsv, sizeof(thr));
3618 SvLEN_set(PL_thrsv, sizeof(thr));
3619 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3620 thr->oursv = PL_thrsv;
3621 PL_chopset = " \n-";
3624 MUTEX_LOCK(&PL_threads_mutex);
3630 MUTEX_UNLOCK(&PL_threads_mutex);
3632 #ifdef HAVE_THREAD_INTERN
3633 Perl_init_thread_intern(thr);
3636 #ifdef SET_THREAD_SELF
3637 SET_THREAD_SELF(thr);
3639 thr->self = pthread_self();
3640 #endif /* SET_THREAD_SELF */
3644 * These must come after the thread self setting
3645 * because sv_setpvn does SvTAINT and the taint
3646 * fields thread selfness being set.
3648 PL_toptarget = NEWSV(0,0);
3649 sv_upgrade(PL_toptarget, SVt_PVFM);
3650 sv_setpvn(PL_toptarget, "", 0);
3651 PL_bodytarget = NEWSV(0,0);
3652 sv_upgrade(PL_bodytarget, SVt_PVFM);
3653 sv_setpvn(PL_bodytarget, "", 0);
3654 PL_formtarget = PL_bodytarget;
3655 thr->errsv = newSVpvn("", 0);
3656 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3659 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3660 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3661 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3662 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3663 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3665 PL_reginterp_cnt = 0;
3669 #endif /* USE_THREADS */
3672 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3675 line_t oldline = CopLINE(PL_curcop);
3681 while (AvFILL(paramList) >= 0) {
3682 cv = (CV*)av_shift(paramList);
3683 if ((PL_minus_c & 0x10) && (paramList == PL_beginav)) {
3684 /* save PL_beginav for compiler */
3685 if (! PL_beginav_save)
3686 PL_beginav_save = newAV();
3687 av_push(PL_beginav_save, (SV*)cv);
3691 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3692 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3698 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3702 (void)SvPV(atsv, len);
3705 PL_curcop = &PL_compiling;
3706 CopLINE_set(PL_curcop, oldline);
3707 if (paramList == PL_beginav)
3708 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3710 Perl_sv_catpvf(aTHX_ atsv,
3711 "%s failed--call queue aborted",
3712 paramList == PL_checkav ? "CHECK"
3713 : paramList == PL_initav ? "INIT"
3715 while (PL_scopestack_ix > oldscope)
3718 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3725 /* my_exit() was called */
3726 while (PL_scopestack_ix > oldscope)
3729 PL_curstash = PL_defstash;
3730 PL_curcop = &PL_compiling;
3731 CopLINE_set(PL_curcop, oldline);
3733 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3734 if (paramList == PL_beginav)
3735 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3737 Perl_croak(aTHX_ "%s failed--call queue aborted",
3738 paramList == PL_checkav ? "CHECK"
3739 : paramList == PL_initav ? "INIT"
3746 PL_curcop = &PL_compiling;
3747 CopLINE_set(PL_curcop, oldline);
3750 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3758 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3760 S_vcall_list_body(pTHX_ va_list args)
3762 CV *cv = va_arg(args, CV*);
3763 return call_list_body(cv);
3768 S_call_list_body(pTHX_ CV *cv)
3770 PUSHMARK(PL_stack_sp);
3771 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3776 Perl_my_exit(pTHX_ U32 status)
3778 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3779 thr, (unsigned long) status));
3788 STATUS_NATIVE_SET(status);
3795 Perl_my_failure_exit(pTHX)
3798 if (vaxc$errno & 1) {
3799 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3800 STATUS_NATIVE_SET(44);
3803 if (!vaxc$errno && errno) /* unlikely */
3804 STATUS_NATIVE_SET(44);
3806 STATUS_NATIVE_SET(vaxc$errno);
3811 STATUS_POSIX_SET(errno);
3813 exitstatus = STATUS_POSIX >> 8;
3814 if (exitstatus & 255)
3815 STATUS_POSIX_SET(exitstatus);
3817 STATUS_POSIX_SET(255);
3824 S_my_exit_jump(pTHX)
3826 register PERL_CONTEXT *cx;
3831 SvREFCNT_dec(PL_e_script);
3832 PL_e_script = Nullsv;
3835 POPSTACK_TO(PL_mainstack);
3836 if (cxstack_ix >= 0) {
3839 POPBLOCK(cx,PL_curpm);
3851 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3854 p = SvPVX(PL_e_script);
3855 nl = strchr(p, '\n');
3856 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3858 filter_del(read_e_script);
3861 sv_catpvn(buf_sv, p, nl-p);
3862 sv_chop(PL_e_script, nl);