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)
788 # if defined(PERL_IMPLICIT_SYS) && defined(WIN32)
789 void *host = w32_internal_host;
790 if (PerlProc_lasthost())
793 win32_delete_internal_host(host);
801 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
803 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
804 PL_exitlist[PL_exitlistlen].fn = fn;
805 PL_exitlist[PL_exitlistlen].ptr = ptr;
810 =for apidoc perl_parse
812 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
818 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
827 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
830 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
831 setuid perl scripts securely.\n");
835 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
836 _dyld_lookup_and_bind
837 ("__environ", (unsigned long *) &environ_pointer, NULL);
842 #ifdef USE_ENVIRON_ARRAY
843 PL_origenviron = environ;
848 /* Come here if running an undumped a.out. */
850 PL_origfilename = savepv(argv[0]);
851 PL_do_undump = FALSE;
852 cxstack_ix = -1; /* start label stack again */
854 init_postdump_symbols(argc,argv,env);
859 PL_curpad = AvARRAY(PL_comppad);
860 op_free(PL_main_root);
861 PL_main_root = Nullop;
863 PL_main_start = Nullop;
864 SvREFCNT_dec(PL_main_cv);
868 oldscope = PL_scopestack_ix;
869 PL_dowarn = G_WARN_OFF;
871 #ifdef PERL_FLEXIBLE_EXCEPTIONS
872 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
878 #ifndef PERL_FLEXIBLE_EXCEPTIONS
879 parse_body(env,xsinit);
882 call_list(oldscope, PL_checkav);
889 /* my_exit() was called */
890 while (PL_scopestack_ix > oldscope)
893 PL_curstash = PL_defstash;
895 call_list(oldscope, PL_checkav);
896 ret = STATUS_NATIVE_EXPORT;
899 PerlIO_printf(Perl_error_log, "panic: top_env\n");
907 #ifdef PERL_FLEXIBLE_EXCEPTIONS
909 S_vparse_body(pTHX_ va_list args)
911 char **env = va_arg(args, char**);
912 XSINIT_t xsinit = va_arg(args, XSINIT_t);
914 return parse_body(env, xsinit);
919 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
921 int argc = PL_origargc;
922 char **argv = PL_origargv;
923 char *scriptname = NULL;
925 VOL bool dosearch = FALSE;
930 char *cddir = Nullch;
932 sv_setpvn(PL_linestr,"",0);
933 sv = newSVpvn("",0); /* first used for -I flags */
937 for (argc--,argv++; argc > 0; argc--,argv++) {
938 if (argv[0][0] != '-' || !argv[0][1])
942 validarg = " PHOOEY ";
951 win32_argv2utf8(argc-1, argv+1);
954 #ifndef PERL_STRICT_CR
978 if ((s = moreswitches(s)))
988 #ifdef MACOS_TRADITIONAL
989 /* ignore -e for Dev:Pseudo argument */
990 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
993 if (PL_euid != PL_uid || PL_egid != PL_gid)
994 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
996 PL_e_script = newSVpvn("",0);
997 filter_add(read_e_script, NULL);
1000 sv_catpv(PL_e_script, s);
1002 sv_catpv(PL_e_script, argv[1]);
1006 Perl_croak(aTHX_ "No code specified for -e");
1007 sv_catpv(PL_e_script, "\n");
1010 case 'I': /* -I handled both here and in moreswitches() */
1012 if (!*++s && (s=argv[1]) != Nullch) {
1017 STRLEN len = strlen(s);
1018 p = savepvn(s, len);
1019 incpush(p, TRUE, TRUE);
1020 sv_catpvn(sv, "-I", 2);
1021 sv_catpvn(sv, p, len);
1022 sv_catpvn(sv, " ", 1);
1026 Perl_croak(aTHX_ "No directory specified for -I");
1030 PL_preprocess = TRUE;
1040 PL_preambleav = newAV();
1041 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1043 PL_Sv = newSVpv("print myconfig();",0);
1045 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1047 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1049 sv_catpv(PL_Sv,"\" Compile-time options:");
1051 sv_catpv(PL_Sv," DEBUGGING");
1053 # ifdef MULTIPLICITY
1054 sv_catpv(PL_Sv," MULTIPLICITY");
1057 sv_catpv(PL_Sv," USE_THREADS");
1059 # ifdef USE_ITHREADS
1060 sv_catpv(PL_Sv," USE_ITHREADS");
1062 # ifdef USE_64_BIT_INT
1063 sv_catpv(PL_Sv," USE_64_BIT_INT");
1065 # ifdef USE_64_BIT_ALL
1066 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1068 # ifdef USE_LONG_DOUBLE
1069 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1071 # ifdef USE_LARGE_FILES
1072 sv_catpv(PL_Sv," USE_LARGE_FILES");
1075 sv_catpv(PL_Sv," USE_SOCKS");
1078 sv_catpv(PL_Sv," PERL_OBJECT");
1080 # ifdef PERL_IMPLICIT_CONTEXT
1081 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1083 # ifdef PERL_IMPLICIT_SYS
1084 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1086 sv_catpv(PL_Sv,"\\n\",");
1088 #if defined(LOCAL_PATCH_COUNT)
1089 if (LOCAL_PATCH_COUNT > 0) {
1091 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1092 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1093 if (PL_localpatches[i])
1094 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1098 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1101 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1103 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1106 sv_catpv(PL_Sv, "; \
1108 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1109 print \" \\%ENV:\\n @env\\n\" if @env; \
1110 print \" \\@INC:\\n @INC\\n\";");
1113 PL_Sv = newSVpv("config_vars(qw(",0);
1114 sv_catpv(PL_Sv, ++s);
1115 sv_catpv(PL_Sv, "))");
1118 av_push(PL_preambleav, PL_Sv);
1119 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1122 PL_doextract = TRUE;
1130 if (!*++s || isSPACE(*s)) {
1134 /* catch use of gnu style long options */
1135 if (strEQ(s, "version")) {
1139 if (strEQ(s, "help")) {
1146 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1152 #ifndef SECURE_INTERNAL_GETENV
1155 (s = PerlEnv_getenv("PERL5OPT")))
1159 if (*s == '-' && *(s+1) == 'T')
1172 if (!strchr("DIMUdmw", *s))
1173 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1174 s = moreswitches(s);
1180 scriptname = argv[0];
1183 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1185 else if (scriptname == Nullch) {
1187 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1195 open_script(scriptname,dosearch,sv,&fdscript);
1197 validate_suid(validarg, scriptname,fdscript);
1200 #if defined(SIGCHLD) || defined(SIGCLD)
1203 # define SIGCHLD SIGCLD
1205 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1206 if (sigstate == SIG_IGN) {
1207 if (ckWARN(WARN_SIGNAL))
1208 Perl_warner(aTHX_ WARN_SIGNAL,
1209 "Can't ignore signal CHLD, forcing to default");
1210 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1216 #ifdef MACOS_TRADITIONAL
1217 if (PL_doextract || gMacPerl_AlwaysExtract) {
1222 if (cddir && PerlDir_chdir(cddir) < 0)
1223 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1227 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1228 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1229 CvUNIQUE_on(PL_compcv);
1231 PL_comppad = newAV();
1232 av_push(PL_comppad, Nullsv);
1233 PL_curpad = AvARRAY(PL_comppad);
1234 PL_comppad_name = newAV();
1235 PL_comppad_name_fill = 0;
1236 PL_min_intro_pending = 0;
1239 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1240 PL_curpad[0] = (SV*)newAV();
1241 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1242 CvOWNER(PL_compcv) = 0;
1243 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1244 MUTEX_INIT(CvMUTEXP(PL_compcv));
1245 #endif /* USE_THREADS */
1247 comppadlist = newAV();
1248 AvREAL_off(comppadlist);
1249 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1250 av_store(comppadlist, 1, (SV*)PL_comppad);
1251 CvPADLIST(PL_compcv) = comppadlist;
1253 boot_core_UNIVERSAL();
1255 boot_core_xsutils();
1259 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1261 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1267 # ifdef HAS_SOCKS5_INIT
1268 socks5_init(argv[0]);
1274 init_predump_symbols();
1275 /* init_postdump_symbols not currently designed to be called */
1276 /* more than once (ENV isn't cleared first, for example) */
1277 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1279 init_postdump_symbols(argc,argv,env);
1283 /* now parse the script */
1285 SETERRNO(0,SS$_NORMAL);
1287 #ifdef MACOS_TRADITIONAL
1288 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1290 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1292 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1293 MacPerl_MPWFileName(PL_origfilename));
1297 if (yyparse() || PL_error_count) {
1299 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1301 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1306 CopLINE_set(PL_curcop, 0);
1307 PL_curstash = PL_defstash;
1308 PL_preprocess = FALSE;
1310 SvREFCNT_dec(PL_e_script);
1311 PL_e_script = Nullsv;
1314 /* now that script is parsed, we can modify record separator */
1315 SvREFCNT_dec(PL_rs);
1316 PL_rs = SvREFCNT_inc(PL_nrs);
1317 sv_setsv(get_sv("/", TRUE), PL_rs);
1322 SAVECOPFILE(PL_curcop);
1323 SAVECOPLINE(PL_curcop);
1324 gv_check(PL_defstash);
1331 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1332 dump_mstats("after compilation:");
1341 =for apidoc perl_run
1343 Tells a Perl interpreter to run. See L<perlembed>.
1358 oldscope = PL_scopestack_ix;
1360 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1362 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1368 cxstack_ix = -1; /* start context stack again */
1370 case 0: /* normal completion */
1371 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1376 case 2: /* my_exit() */
1377 while (PL_scopestack_ix > oldscope)
1380 PL_curstash = PL_defstash;
1381 if (PL_endav && !PL_minus_c)
1382 call_list(oldscope, PL_endav);
1384 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1385 dump_mstats("after execution: ");
1387 ret = STATUS_NATIVE_EXPORT;
1391 POPSTACK_TO(PL_mainstack);
1394 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1404 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1406 S_vrun_body(pTHX_ va_list args)
1408 I32 oldscope = va_arg(args, I32);
1410 return run_body(oldscope);
1416 S_run_body(pTHX_ I32 oldscope)
1418 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1419 PL_sawampersand ? "Enabling" : "Omitting"));
1421 if (!PL_restartop) {
1422 DEBUG_x(dump_all());
1423 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1424 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1428 #ifdef MACOS_TRADITIONAL
1429 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1431 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1435 if (PERLDB_SINGLE && PL_DBsingle)
1436 sv_setiv(PL_DBsingle, 1);
1438 call_list(oldscope, PL_initav);
1444 PL_op = PL_restartop;
1448 else if (PL_main_start) {
1449 CvDEPTH(PL_main_cv) = 1;
1450 PL_op = PL_main_start;
1460 =for apidoc p||get_sv
1462 Returns the SV of the specified Perl scalar. If C<create> is set and the
1463 Perl variable does not exist then it will be created. If C<create> is not
1464 set and the variable does not exist then NULL is returned.
1470 Perl_get_sv(pTHX_ const char *name, I32 create)
1474 if (name[1] == '\0' && !isALPHA(name[0])) {
1475 PADOFFSET tmp = find_threadsv(name);
1476 if (tmp != NOT_IN_PAD)
1477 return THREADSV(tmp);
1479 #endif /* USE_THREADS */
1480 gv = gv_fetchpv(name, create, SVt_PV);
1487 =for apidoc p||get_av
1489 Returns the AV of the specified Perl array. If C<create> is set and the
1490 Perl variable does not exist then it will be created. If C<create> is not
1491 set and the variable does not exist then NULL is returned.
1497 Perl_get_av(pTHX_ const char *name, I32 create)
1499 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1508 =for apidoc p||get_hv
1510 Returns the HV of the specified Perl hash. If C<create> is set and the
1511 Perl variable does not exist then it will be created. If C<create> is not
1512 set and the variable does not exist then NULL is returned.
1518 Perl_get_hv(pTHX_ const char *name, I32 create)
1520 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1529 =for apidoc p||get_cv
1531 Returns the CV of the specified Perl subroutine. If C<create> is set and
1532 the Perl subroutine does not exist then it will be declared (which has the
1533 same effect as saying C<sub name;>). If C<create> is not set and the
1534 subroutine does not exist then NULL is returned.
1540 Perl_get_cv(pTHX_ const char *name, I32 create)
1542 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1543 /* XXX unsafe for threads if eval_owner isn't held */
1544 /* XXX this is probably not what they think they're getting.
1545 * It has the same effect as "sub name;", i.e. just a forward
1547 if (create && !GvCVu(gv))
1548 return newSUB(start_subparse(FALSE, 0),
1549 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1557 /* Be sure to refetch the stack pointer after calling these routines. */
1560 =for apidoc p||call_argv
1562 Performs a callback to the specified Perl sub. See L<perlcall>.
1568 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1570 /* See G_* flags in cop.h */
1571 /* null terminated arg list */
1578 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1583 return call_pv(sub_name, flags);
1587 =for apidoc p||call_pv
1589 Performs a callback to the specified Perl sub. See L<perlcall>.
1595 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1596 /* name of the subroutine */
1597 /* See G_* flags in cop.h */
1599 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1603 =for apidoc p||call_method
1605 Performs a callback to the specified Perl method. The blessed object must
1606 be on the stack. See L<perlcall>.
1612 Perl_call_method(pTHX_ const char *methname, I32 flags)
1613 /* name of the subroutine */
1614 /* See G_* flags in cop.h */
1616 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1619 /* May be called with any of a CV, a GV, or an SV containing the name. */
1621 =for apidoc p||call_sv
1623 Performs a callback to the Perl sub whose name is in the SV. See
1630 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1631 /* See G_* flags in cop.h */
1634 LOGOP myop; /* fake syntax tree node */
1639 bool oldcatch = CATCH_GET;
1644 if (flags & G_DISCARD) {
1649 Zero(&myop, 1, LOGOP);
1650 myop.op_next = Nullop;
1651 if (!(flags & G_NOARGS))
1652 myop.op_flags |= OPf_STACKED;
1653 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1654 (flags & G_ARRAY) ? OPf_WANT_LIST :
1659 EXTEND(PL_stack_sp, 1);
1660 *++PL_stack_sp = sv;
1662 oldscope = PL_scopestack_ix;
1664 if (PERLDB_SUB && PL_curstash != PL_debstash
1665 /* Handle first BEGIN of -d. */
1666 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1667 /* Try harder, since this may have been a sighandler, thus
1668 * curstash may be meaningless. */
1669 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1670 && !(flags & G_NODEBUG))
1671 PL_op->op_private |= OPpENTERSUB_DB;
1673 if (flags & G_METHOD) {
1674 Zero(&method_op, 1, UNOP);
1675 method_op.op_next = PL_op;
1676 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1677 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1678 PL_op = (OP*)&method_op;
1681 if (!(flags & G_EVAL)) {
1683 call_body((OP*)&myop, FALSE);
1684 retval = PL_stack_sp - (PL_stack_base + oldmark);
1685 CATCH_SET(oldcatch);
1688 myop.op_other = (OP*)&myop;
1690 /* we're trying to emulate pp_entertry() here */
1692 register PERL_CONTEXT *cx;
1693 I32 gimme = GIMME_V;
1698 push_return(Nullop);
1699 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1701 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1703 PL_in_eval = EVAL_INEVAL;
1704 if (flags & G_KEEPERR)
1705 PL_in_eval |= EVAL_KEEPERR;
1711 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1713 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1720 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1722 call_body((OP*)&myop, FALSE);
1724 retval = PL_stack_sp - (PL_stack_base + oldmark);
1725 if (!(flags & G_KEEPERR))
1732 /* my_exit() was called */
1733 PL_curstash = PL_defstash;
1736 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1737 Perl_croak(aTHX_ "Callback called exit");
1742 PL_op = PL_restartop;
1746 PL_stack_sp = PL_stack_base + oldmark;
1747 if (flags & G_ARRAY)
1751 *++PL_stack_sp = &PL_sv_undef;
1756 if (PL_scopestack_ix > oldscope) {
1760 register PERL_CONTEXT *cx;
1772 if (flags & G_DISCARD) {
1773 PL_stack_sp = PL_stack_base + oldmark;
1782 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1784 S_vcall_body(pTHX_ va_list args)
1786 OP *myop = va_arg(args, OP*);
1787 int is_eval = va_arg(args, int);
1789 call_body(myop, is_eval);
1795 S_call_body(pTHX_ OP *myop, int is_eval)
1797 if (PL_op == myop) {
1799 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1801 PL_op = Perl_pp_entersub(aTHX); /* this does */
1807 /* Eval a string. The G_EVAL flag is always assumed. */
1810 =for apidoc p||eval_sv
1812 Tells Perl to C<eval> the string in the SV.
1818 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1820 /* See G_* flags in cop.h */
1823 UNOP myop; /* fake syntax tree node */
1824 I32 oldmark = SP - PL_stack_base;
1831 if (flags & G_DISCARD) {
1838 Zero(PL_op, 1, UNOP);
1839 EXTEND(PL_stack_sp, 1);
1840 *++PL_stack_sp = sv;
1841 oldscope = PL_scopestack_ix;
1843 if (!(flags & G_NOARGS))
1844 myop.op_flags = OPf_STACKED;
1845 myop.op_next = Nullop;
1846 myop.op_type = OP_ENTEREVAL;
1847 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1848 (flags & G_ARRAY) ? OPf_WANT_LIST :
1850 if (flags & G_KEEPERR)
1851 myop.op_flags |= OPf_SPECIAL;
1853 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1855 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1862 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1864 call_body((OP*)&myop,TRUE);
1866 retval = PL_stack_sp - (PL_stack_base + oldmark);
1867 if (!(flags & G_KEEPERR))
1874 /* my_exit() was called */
1875 PL_curstash = PL_defstash;
1878 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1879 Perl_croak(aTHX_ "Callback called exit");
1884 PL_op = PL_restartop;
1888 PL_stack_sp = PL_stack_base + oldmark;
1889 if (flags & G_ARRAY)
1893 *++PL_stack_sp = &PL_sv_undef;
1899 if (flags & G_DISCARD) {
1900 PL_stack_sp = PL_stack_base + oldmark;
1910 =for apidoc p||eval_pv
1912 Tells Perl to C<eval> the given string and return an SV* result.
1918 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1921 SV* sv = newSVpv(p, 0);
1923 eval_sv(sv, G_SCALAR);
1930 if (croak_on_error && SvTRUE(ERRSV)) {
1932 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1938 /* Require a module. */
1941 =for apidoc p||require_pv
1943 Tells Perl to C<require> a module.
1949 Perl_require_pv(pTHX_ const char *pv)
1953 PUSHSTACKi(PERLSI_REQUIRE);
1955 sv = sv_newmortal();
1956 sv_setpv(sv, "require '");
1959 eval_sv(sv, G_DISCARD);
1965 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
1969 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
1970 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1974 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
1976 /* This message really ought to be max 23 lines.
1977 * Removed -h because the user already knows that opton. Others? */
1979 static char *usage_msg[] = {
1980 "-0[octal] specify record separator (\\0, if no argument)",
1981 "-a autosplit mode with -n or -p (splits $_ into @F)",
1982 "-C enable native wide character system interfaces",
1983 "-c check syntax only (runs BEGIN and CHECK blocks)",
1984 "-d[:debugger] run program under debugger",
1985 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1986 "-e 'command' one line of program (several -e's allowed, omit programfile)",
1987 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
1988 "-i[extension] edit <> files in place (makes backup if extension supplied)",
1989 "-Idirectory specify @INC/#include directory (several -I's allowed)",
1990 "-l[octal] enable line ending processing, specifies line terminator",
1991 "-[mM][-]module execute `use/no module...' before executing program",
1992 "-n assume 'while (<>) { ... }' loop around program",
1993 "-p assume loop like -n but print line also, like sed",
1994 "-P run program through C preprocessor before compilation",
1995 "-s enable rudimentary parsing for switches after programfile",
1996 "-S look for programfile using PATH environment variable",
1997 "-T enable tainting checks",
1998 "-u dump core after parsing program",
1999 "-U allow unsafe operations",
2000 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2001 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2002 "-w enable many useful warnings (RECOMMENDED)",
2003 "-W enable all warnings",
2004 "-X disable all warnings",
2005 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2009 char **p = usage_msg;
2011 PerlIO_printf(PerlIO_stdout(),
2012 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2015 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2018 /* This routine handles any switches that can be given during run */
2021 Perl_moreswitches(pTHX_ char *s)
2029 numlen = 0; /* disallow underscores */
2030 rschar = (U32)scan_oct(s, 4, &numlen);
2031 SvREFCNT_dec(PL_nrs);
2032 if (rschar & ~((U8)~0))
2033 PL_nrs = &PL_sv_undef;
2034 else if (!rschar && numlen >= 2)
2035 PL_nrs = newSVpvn("", 0);
2038 PL_nrs = newSVpvn(&ch, 1);
2043 PL_widesyscalls = TRUE;
2048 PL_splitstr = savepv(s + 1);
2062 /* The following permits -d:Mod to accepts arguments following an =
2063 in the fashion that -MSome::Mod does. */
2064 if (*s == ':' || *s == '=') {
2067 sv = newSVpv("use Devel::", 0);
2069 /* We now allow -d:Module=Foo,Bar */
2070 while(isALNUM(*s) || *s==':') ++s;
2072 sv_catpv(sv, start);
2074 sv_catpvn(sv, start, s-start);
2075 sv_catpv(sv, " split(/,/,q{");
2080 my_setenv("PERL5DB", SvPV(sv, PL_na));
2083 PL_perldb = PERLDB_ALL;
2091 if (isALPHA(s[1])) {
2092 static char debopts[] = "psltocPmfrxuLHXDST";
2095 for (s++; *s && (d = strchr(debopts,*s)); s++)
2096 PL_debug |= 1 << (d - debopts);
2099 PL_debug = atoi(s+1);
2100 for (s++; isDIGIT(*s); s++) ;
2102 PL_debug |= 0x80000000;
2104 if (ckWARN_d(WARN_DEBUGGING))
2105 Perl_warner(aTHX_ WARN_DEBUGGING,
2106 "Recompile perl with -DDEBUGGING to use -D switch\n");
2107 for (s++; isALNUM(*s); s++) ;
2113 usage(PL_origargv[0]);
2117 Safefree(PL_inplace);
2118 PL_inplace = savepv(s+1);
2120 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2123 if (*s == '-') /* Additional switches on #! line. */
2127 case 'I': /* -I handled both here and in parse_perl() */
2130 while (*s && isSPACE(*s))
2135 /* ignore trailing spaces (possibly followed by other switches) */
2137 for (e = p; *e && !isSPACE(*e); e++) ;
2141 } while (*p && *p != '-');
2142 e = savepvn(s, e-s);
2143 incpush(e, TRUE, TRUE);
2150 Perl_croak(aTHX_ "No directory specified for -I");
2158 PL_ors = savepv("\n");
2160 numlen = 0; /* disallow underscores */
2161 *PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2165 if (RsPARA(PL_nrs)) {
2170 PL_ors = SvPV(PL_nrs, PL_orslen);
2171 PL_ors = savepvn(PL_ors, PL_orslen);
2175 forbid_setid("-M"); /* XXX ? */
2178 forbid_setid("-m"); /* XXX ? */
2183 /* -M-foo == 'no foo' */
2184 if (*s == '-') { use = "no "; ++s; }
2185 sv = newSVpv(use,0);
2187 /* We allow -M'Module qw(Foo Bar)' */
2188 while(isALNUM(*s) || *s==':') ++s;
2190 sv_catpv(sv, start);
2191 if (*(start-1) == 'm') {
2193 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2194 sv_catpv( sv, " ()");
2198 Perl_croak(aTHX_ "Module name required with -%c option",
2200 sv_catpvn(sv, start, s-start);
2201 sv_catpv(sv, " split(/,/,q{");
2207 PL_preambleav = newAV();
2208 av_push(PL_preambleav, sv);
2211 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2223 PL_doswitches = TRUE;
2228 Perl_croak(aTHX_ "Too late for \"-T\" option");
2232 #ifdef MACOS_TRADITIONAL
2233 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2235 PL_do_undump = TRUE;
2243 PerlIO_printf(PerlIO_stdout(),
2244 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2245 PL_patchlevel, ARCHNAME));
2246 #if defined(LOCAL_PATCH_COUNT)
2247 if (LOCAL_PATCH_COUNT > 0)
2248 PerlIO_printf(PerlIO_stdout(),
2249 "\n(with %d registered patch%s, "
2250 "see perl -V for more detail)",
2251 (int)LOCAL_PATCH_COUNT,
2252 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2255 PerlIO_printf(PerlIO_stdout(),
2256 "\n\nCopyright 1987-2000, Larry Wall\n");
2257 #ifdef MACOS_TRADITIONAL
2258 PerlIO_printf(PerlIO_stdout(),
2259 "\nMacOS port Copyright (c) 1991-2000, Matthias Neeracher\n");
2262 PerlIO_printf(PerlIO_stdout(),
2263 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2266 PerlIO_printf(PerlIO_stdout(),
2267 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2268 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2271 PerlIO_printf(PerlIO_stdout(),
2272 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2273 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2276 PerlIO_printf(PerlIO_stdout(),
2277 "atariST series port, ++jrb bammi@cadence.com\n");
2280 PerlIO_printf(PerlIO_stdout(),
2281 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2284 PerlIO_printf(PerlIO_stdout(),
2285 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
2288 PerlIO_printf(PerlIO_stdout(),
2289 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2292 PerlIO_printf(PerlIO_stdout(),
2293 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2296 PerlIO_printf(PerlIO_stdout(),
2297 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2300 PerlIO_printf(PerlIO_stdout(),
2301 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2304 PerlIO_printf(PerlIO_stdout(),
2305 "MiNT port by Guido Flohr, 1997-1999\n");
2308 PerlIO_printf(PerlIO_stdout(),
2309 "EPOC port by Olaf Flebbe, 1999-2000\n");
2311 #ifdef BINARY_BUILD_NOTICE
2312 BINARY_BUILD_NOTICE;
2314 PerlIO_printf(PerlIO_stdout(),
2316 Perl may be copied only under the terms of either the Artistic License or the\n\
2317 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2318 Complete documentation for Perl, including FAQ lists, should be found on\n\
2319 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2320 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2323 if (! (PL_dowarn & G_WARN_ALL_MASK))
2324 PL_dowarn |= G_WARN_ON;
2328 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2329 PL_compiling.cop_warnings = pWARN_ALL ;
2333 PL_dowarn = G_WARN_ALL_OFF;
2334 PL_compiling.cop_warnings = pWARN_NONE ;
2339 if (s[1] == '-') /* Additional switches on #! line. */
2344 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2350 #ifdef ALTERNATE_SHEBANG
2351 case 'S': /* OS/2 needs -S on "extproc" line. */
2359 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2364 /* compliments of Tom Christiansen */
2366 /* unexec() can be found in the Gnu emacs distribution */
2367 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2370 Perl_my_unexec(pTHX)
2378 prog = newSVpv(BIN_EXP, 0);
2379 sv_catpv(prog, "/perl");
2380 file = newSVpv(PL_origfilename, 0);
2381 sv_catpv(file, ".perldump");
2383 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2384 /* unexec prints msg to stderr in case of failure */
2385 PerlProc_exit(status);
2388 # include <lib$routines.h>
2389 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2391 ABORT(); /* for use with undump */
2396 /* initialize curinterp */
2401 #ifdef PERL_OBJECT /* XXX kludge */
2404 PL_chopset = " \n-"; \
2405 PL_copline = NOLINE; \
2406 PL_curcop = &PL_compiling;\
2407 PL_curcopdb = NULL; \
2409 PL_dumpindent = 4; \
2410 PL_laststatval = -1; \
2411 PL_laststype = OP_STAT; \
2412 PL_maxscream = -1; \
2413 PL_maxsysfd = MAXSYSFD; \
2414 PL_statname = Nullsv; \
2415 PL_tmps_floor = -1; \
2417 PL_op_mask = NULL; \
2418 PL_laststatval = -1; \
2419 PL_laststype = OP_STAT; \
2420 PL_mess_sv = Nullsv; \
2421 PL_splitstr = " "; \
2422 PL_generation = 100; \
2423 PL_exitlist = NULL; \
2424 PL_exitlistlen = 0; \
2426 PL_in_clean_objs = FALSE; \
2427 PL_in_clean_all = FALSE; \
2428 PL_profiledata = NULL; \
2430 PL_rsfp_filters = Nullav; \
2435 # ifdef MULTIPLICITY
2436 # define PERLVAR(var,type)
2437 # define PERLVARA(var,n,type)
2438 # if defined(PERL_IMPLICIT_CONTEXT)
2439 # if defined(USE_THREADS)
2440 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2441 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2442 # else /* !USE_THREADS */
2443 # define PERLVARI(var,type,init) aTHX->var = init;
2444 # define PERLVARIC(var,type,init) aTHX->var = init;
2445 # endif /* USE_THREADS */
2447 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2448 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2450 # include "intrpvar.h"
2451 # ifndef USE_THREADS
2452 # include "thrdvar.h"
2459 # define PERLVAR(var,type)
2460 # define PERLVARA(var,n,type)
2461 # define PERLVARI(var,type,init) PL_##var = init;
2462 # define PERLVARIC(var,type,init) PL_##var = init;
2463 # include "intrpvar.h"
2464 # ifndef USE_THREADS
2465 # include "thrdvar.h"
2477 S_init_main_stash(pTHX)
2481 /* Note that strtab is a rather special HV. Assumptions are made
2482 about not iterating on it, and not adding tie magic to it.
2483 It is properly deallocated in perl_destruct() */
2484 PL_strtab = newHV();
2486 MUTEX_INIT(&PL_strtab_mutex);
2488 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2489 hv_ksplit(PL_strtab, 512);
2491 PL_curstash = PL_defstash = newHV();
2492 PL_curstname = newSVpvn("main",4);
2493 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2494 SvREFCNT_dec(GvHV(gv));
2495 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2497 HvNAME(PL_defstash) = savepv("main");
2498 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2499 GvMULTI_on(PL_incgv);
2500 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2501 GvMULTI_on(PL_hintgv);
2502 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2503 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2504 GvMULTI_on(PL_errgv);
2505 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2506 GvMULTI_on(PL_replgv);
2507 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2508 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2509 sv_setpvn(ERRSV, "", 0);
2510 PL_curstash = PL_defstash;
2511 CopSTASH_set(&PL_compiling, PL_defstash);
2512 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2513 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2514 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2515 /* We must init $/ before switches are processed. */
2516 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2520 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2525 PL_origfilename = savepv("-e");
2528 /* if find_script() returns, it returns a malloc()-ed value */
2529 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2531 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2532 char *s = scriptname + 8;
2533 *fdscript = atoi(s);
2537 scriptname = savepv(s + 1);
2538 Safefree(PL_origfilename);
2539 PL_origfilename = scriptname;
2545 Safefree(CopFILE(PL_curcop));
2547 SvREFCNT_dec(CopFILEGV(PL_curcop));
2549 CopFILE_set(PL_curcop, PL_origfilename);
2550 if (strEQ(PL_origfilename,"-"))
2552 if (*fdscript >= 0) {
2553 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2554 #if defined(HAS_FCNTL) && defined(F_SETFD)
2556 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2559 else if (PL_preprocess) {
2560 char *cpp_cfg = CPPSTDIN;
2561 SV *cpp = newSVpvn("",0);
2562 SV *cmd = NEWSV(0,0);
2564 if (strEQ(cpp_cfg, "cppstdin"))
2565 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2566 sv_catpv(cpp, cpp_cfg);
2568 sv_catpvn(sv, "-I", 2);
2569 sv_catpv(sv,PRIVLIB_EXP);
2571 #if defined(MSDOS) || defined(WIN32)
2572 Perl_sv_setpvf(aTHX_ cmd, "\
2573 sed %s -e \"/^[^#]/b\" \
2574 -e \"/^#[ ]*include[ ]/b\" \
2575 -e \"/^#[ ]*define[ ]/b\" \
2576 -e \"/^#[ ]*if[ ]/b\" \
2577 -e \"/^#[ ]*ifdef[ ]/b\" \
2578 -e \"/^#[ ]*ifndef[ ]/b\" \
2579 -e \"/^#[ ]*else/b\" \
2580 -e \"/^#[ ]*elif[ ]/b\" \
2581 -e \"/^#[ ]*undef[ ]/b\" \
2582 -e \"/^#[ ]*endif/b\" \
2584 %s | %"SVf" -C %"SVf" %s",
2585 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2588 Perl_sv_setpvf(aTHX_ cmd, "\
2589 %s %s -e '/^[^#]/b' \
2590 -e '/^#[ ]*include[ ]/b' \
2591 -e '/^#[ ]*define[ ]/b' \
2592 -e '/^#[ ]*if[ ]/b' \
2593 -e '/^#[ ]*ifdef[ ]/b' \
2594 -e '/^#[ ]*ifndef[ ]/b' \
2595 -e '/^#[ ]*else/b' \
2596 -e '/^#[ ]*elif[ ]/b' \
2597 -e '/^#[ ]*undef[ ]/b' \
2598 -e '/^#[ ]*endif/b' \
2600 %s | %"SVf" %"SVf" %s",
2602 Perl_sv_setpvf(aTHX_ cmd, "\
2603 %s %s -e '/^[^#]/b' \
2604 -e '/^#[ ]*include[ ]/b' \
2605 -e '/^#[ ]*define[ ]/b' \
2606 -e '/^#[ ]*if[ ]/b' \
2607 -e '/^#[ ]*ifdef[ ]/b' \
2608 -e '/^#[ ]*ifndef[ ]/b' \
2609 -e '/^#[ ]*else/b' \
2610 -e '/^#[ ]*elif[ ]/b' \
2611 -e '/^#[ ]*undef[ ]/b' \
2612 -e '/^#[ ]*endif/b' \
2614 %s | %"SVf" -C %"SVf" %s",
2621 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2623 scriptname, cpp, sv, CPPMINUS);
2624 PL_doextract = FALSE;
2625 #ifdef IAMSUID /* actually, this is caught earlier */
2626 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2628 (void)seteuid(PL_uid); /* musn't stay setuid root */
2631 (void)setreuid((Uid_t)-1, PL_uid);
2633 #ifdef HAS_SETRESUID
2634 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2636 PerlProc_setuid(PL_uid);
2640 if (PerlProc_geteuid() != PL_uid)
2641 Perl_croak(aTHX_ "Can't do seteuid!\n");
2643 #endif /* IAMSUID */
2644 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2648 else if (!*scriptname) {
2649 forbid_setid("program input from stdin");
2650 PL_rsfp = PerlIO_stdin();
2653 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2654 #if defined(HAS_FCNTL) && defined(F_SETFD)
2656 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2661 #ifndef IAMSUID /* in case script is not readable before setuid */
2663 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2664 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2667 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2668 (int)PERL_REVISION, (int)PERL_VERSION,
2669 (int)PERL_SUBVERSION), PL_origargv);
2670 Perl_croak(aTHX_ "Can't do setuid\n");
2674 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2675 CopFILE(PL_curcop), Strerror(errno));
2680 * I_SYSSTATVFS HAS_FSTATVFS
2682 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2683 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2684 * here so that metaconfig picks them up. */
2688 S_fd_on_nosuid_fs(pTHX_ int fd)
2690 int check_okay = 0; /* able to do all the required sys/libcalls */
2691 int on_nosuid = 0; /* the fd is on a nosuid fs */
2693 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2694 * fstatvfs() is UNIX98.
2695 * fstatfs() is 4.3 BSD.
2696 * ustat()+getmnt() is pre-4.3 BSD.
2697 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2698 * an irrelevant filesystem while trying to reach the right one.
2701 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2703 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2704 defined(HAS_FSTATVFS)
2705 # define FD_ON_NOSUID_CHECK_OKAY
2706 struct statvfs stfs;
2708 check_okay = fstatvfs(fd, &stfs) == 0;
2709 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2710 # endif /* fstatvfs */
2712 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2713 defined(PERL_MOUNT_NOSUID) && \
2714 defined(HAS_FSTATFS) && \
2715 defined(HAS_STRUCT_STATFS) && \
2716 defined(HAS_STRUCT_STATFS_F_FLAGS)
2717 # define FD_ON_NOSUID_CHECK_OKAY
2720 check_okay = fstatfs(fd, &stfs) == 0;
2721 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2722 # endif /* fstatfs */
2724 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2725 defined(PERL_MOUNT_NOSUID) && \
2726 defined(HAS_FSTAT) && \
2727 defined(HAS_USTAT) && \
2728 defined(HAS_GETMNT) && \
2729 defined(HAS_STRUCT_FS_DATA) && \
2731 # define FD_ON_NOSUID_CHECK_OKAY
2734 if (fstat(fd, &fdst) == 0) {
2736 if (ustat(fdst.st_dev, &us) == 0) {
2738 /* NOSTAT_ONE here because we're not examining fields which
2739 * vary between that case and STAT_ONE. */
2740 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2741 size_t cmplen = sizeof(us.f_fname);
2742 if (sizeof(fsd.fd_req.path) < cmplen)
2743 cmplen = sizeof(fsd.fd_req.path);
2744 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2745 fdst.st_dev == fsd.fd_req.dev) {
2747 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2753 # endif /* fstat+ustat+getmnt */
2755 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2756 defined(HAS_GETMNTENT) && \
2757 defined(HAS_HASMNTOPT) && \
2758 defined(MNTOPT_NOSUID)
2759 # define FD_ON_NOSUID_CHECK_OKAY
2760 FILE *mtab = fopen("/etc/mtab", "r");
2761 struct mntent *entry;
2762 struct stat stb, fsb;
2764 if (mtab && (fstat(fd, &stb) == 0)) {
2765 while (entry = getmntent(mtab)) {
2766 if (stat(entry->mnt_dir, &fsb) == 0
2767 && fsb.st_dev == stb.st_dev)
2769 /* found the filesystem */
2771 if (hasmntopt(entry, MNTOPT_NOSUID))
2774 } /* A single fs may well fail its stat(). */
2779 # endif /* getmntent+hasmntopt */
2782 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2785 #endif /* IAMSUID */
2788 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2794 /* do we need to emulate setuid on scripts? */
2796 /* This code is for those BSD systems that have setuid #! scripts disabled
2797 * in the kernel because of a security problem. Merely defining DOSUID
2798 * in perl will not fix that problem, but if you have disabled setuid
2799 * scripts in the kernel, this will attempt to emulate setuid and setgid
2800 * on scripts that have those now-otherwise-useless bits set. The setuid
2801 * root version must be called suidperl or sperlN.NNN. If regular perl
2802 * discovers that it has opened a setuid script, it calls suidperl with
2803 * the same argv that it had. If suidperl finds that the script it has
2804 * just opened is NOT setuid root, it sets the effective uid back to the
2805 * uid. We don't just make perl setuid root because that loses the
2806 * effective uid we had before invoking perl, if it was different from the
2809 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2810 * be defined in suidperl only. suidperl must be setuid root. The
2811 * Configure script will set this up for you if you want it.
2817 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2818 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2819 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2824 #ifndef HAS_SETREUID
2825 /* On this access check to make sure the directories are readable,
2826 * there is actually a small window that the user could use to make
2827 * filename point to an accessible directory. So there is a faint
2828 * chance that someone could execute a setuid script down in a
2829 * non-accessible directory. I don't know what to do about that.
2830 * But I don't think it's too important. The manual lies when
2831 * it says access() is useful in setuid programs.
2833 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2834 Perl_croak(aTHX_ "Permission denied");
2836 /* If we can swap euid and uid, then we can determine access rights
2837 * with a simple stat of the file, and then compare device and
2838 * inode to make sure we did stat() on the same file we opened.
2839 * Then we just have to make sure he or she can execute it.
2842 struct stat tmpstatbuf;
2846 setreuid(PL_euid,PL_uid) < 0
2849 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2852 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2853 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2854 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2855 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2856 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2857 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2858 Perl_croak(aTHX_ "Permission denied");
2860 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2861 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2862 (void)PerlIO_close(PL_rsfp);
2863 Perl_croak(aTHX_ "Permission denied\n");
2867 setreuid(PL_uid,PL_euid) < 0
2869 # if defined(HAS_SETRESUID)
2870 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2873 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2874 Perl_croak(aTHX_ "Can't reswap uid and euid");
2875 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2876 Perl_croak(aTHX_ "Permission denied\n");
2878 #endif /* HAS_SETREUID */
2879 #endif /* IAMSUID */
2881 if (!S_ISREG(PL_statbuf.st_mode))
2882 Perl_croak(aTHX_ "Permission denied");
2883 if (PL_statbuf.st_mode & S_IWOTH)
2884 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2885 PL_doswitches = FALSE; /* -s is insecure in suid */
2886 CopLINE_inc(PL_curcop);
2887 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2888 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2889 Perl_croak(aTHX_ "No #! line");
2890 s = SvPV(PL_linestr,n_a)+2;
2892 while (!isSPACE(*s)) s++;
2893 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2894 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2895 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2896 Perl_croak(aTHX_ "Not a perl script");
2897 while (*s == ' ' || *s == '\t') s++;
2899 * #! arg must be what we saw above. They can invoke it by
2900 * mentioning suidperl explicitly, but they may not add any strange
2901 * arguments beyond what #! says if they do invoke suidperl that way.
2903 len = strlen(validarg);
2904 if (strEQ(validarg," PHOOEY ") ||
2905 strnNE(s,validarg,len) || !isSPACE(s[len]))
2906 Perl_croak(aTHX_ "Args must match #! line");
2909 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2910 PL_euid == PL_statbuf.st_uid)
2912 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2913 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2914 #endif /* IAMSUID */
2916 if (PL_euid) { /* oops, we're not the setuid root perl */
2917 (void)PerlIO_close(PL_rsfp);
2920 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2921 (int)PERL_REVISION, (int)PERL_VERSION,
2922 (int)PERL_SUBVERSION), PL_origargv);
2924 Perl_croak(aTHX_ "Can't do setuid\n");
2927 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2929 (void)setegid(PL_statbuf.st_gid);
2932 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2934 #ifdef HAS_SETRESGID
2935 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2937 PerlProc_setgid(PL_statbuf.st_gid);
2941 if (PerlProc_getegid() != PL_statbuf.st_gid)
2942 Perl_croak(aTHX_ "Can't do setegid!\n");
2944 if (PL_statbuf.st_mode & S_ISUID) {
2945 if (PL_statbuf.st_uid != PL_euid)
2947 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2950 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2952 #ifdef HAS_SETRESUID
2953 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2955 PerlProc_setuid(PL_statbuf.st_uid);
2959 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2960 Perl_croak(aTHX_ "Can't do seteuid!\n");
2962 else if (PL_uid) { /* oops, mustn't run as root */
2964 (void)seteuid((Uid_t)PL_uid);
2967 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2969 #ifdef HAS_SETRESUID
2970 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2972 PerlProc_setuid((Uid_t)PL_uid);
2976 if (PerlProc_geteuid() != PL_uid)
2977 Perl_croak(aTHX_ "Can't do seteuid!\n");
2980 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2981 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
2984 else if (PL_preprocess)
2985 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
2986 else if (fdscript >= 0)
2987 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
2989 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
2991 /* We absolutely must clear out any saved ids here, so we */
2992 /* exec the real perl, substituting fd script for scriptname. */
2993 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2994 PerlIO_rewind(PL_rsfp);
2995 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2996 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2997 if (!PL_origargv[which])
2998 Perl_croak(aTHX_ "Permission denied");
2999 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3000 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3001 #if defined(HAS_FCNTL) && defined(F_SETFD)
3002 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3004 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3005 (int)PERL_REVISION, (int)PERL_VERSION,
3006 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3007 Perl_croak(aTHX_ "Can't do setuid\n");
3008 #endif /* IAMSUID */
3010 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3011 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3012 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3013 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3015 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3018 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3019 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3020 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3021 /* not set-id, must be wrapped */
3027 S_find_beginning(pTHX)
3029 register char *s, *s2;
3031 /* skip forward in input to the real script? */
3034 #ifdef MACOS_TRADITIONAL
3035 /* Since the Mac OS does not honor !# arguments for us, we do it ourselves */
3037 while (PL_doextract || gMacPerl_AlwaysExtract) {
3038 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3039 if (!gMacPerl_AlwaysExtract)
3040 Perl_croak(aTHX_ "No Perl script found in input\n");
3042 if (PL_doextract) /* require explicit override ? */
3043 if (!OverrideExtract(PL_origfilename))
3044 Perl_croak(aTHX_ "User aborted script\n");
3046 PL_doextract = FALSE;
3048 /* Pater peccavi, file does not have #! */
3049 PerlIO_rewind(PL_rsfp);
3054 while (PL_doextract) {
3055 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3056 Perl_croak(aTHX_ "No Perl script found in input\n");
3058 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3059 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3060 PL_doextract = FALSE;
3061 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3063 while (*s == ' ' || *s == '\t') s++;
3065 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3066 if (strnEQ(s2-4,"perl",4))
3068 while ((s = moreswitches(s)))
3079 PL_uid = PerlProc_getuid();
3080 PL_euid = PerlProc_geteuid();
3081 PL_gid = PerlProc_getgid();
3082 PL_egid = PerlProc_getegid();
3084 PL_uid |= PL_gid << 16;
3085 PL_euid |= PL_egid << 16;
3087 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3091 S_forbid_setid(pTHX_ char *s)
3093 if (PL_euid != PL_uid)
3094 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3095 if (PL_egid != PL_gid)
3096 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3100 Perl_init_debugger(pTHX)
3102 HV *ostash = PL_curstash;
3104 PL_curstash = PL_debstash;
3105 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3106 AvREAL_off(PL_dbargs);
3107 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3108 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3109 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3110 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3111 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3112 sv_setiv(PL_DBsingle, 0);
3113 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3114 sv_setiv(PL_DBtrace, 0);
3115 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3116 sv_setiv(PL_DBsignal, 0);
3117 PL_curstash = ostash;
3120 #ifndef STRESS_REALLOC
3121 #define REASONABLE(size) (size)
3123 #define REASONABLE(size) (1) /* unreasonable */
3127 Perl_init_stacks(pTHX)
3129 /* start with 128-item stack and 8K cxstack */
3130 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3131 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3132 PL_curstackinfo->si_type = PERLSI_MAIN;
3133 PL_curstack = PL_curstackinfo->si_stack;
3134 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3136 PL_stack_base = AvARRAY(PL_curstack);
3137 PL_stack_sp = PL_stack_base;
3138 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3140 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3143 PL_tmps_max = REASONABLE(128);
3145 New(54,PL_markstack,REASONABLE(32),I32);
3146 PL_markstack_ptr = PL_markstack;
3147 PL_markstack_max = PL_markstack + REASONABLE(32);
3151 New(54,PL_scopestack,REASONABLE(32),I32);
3152 PL_scopestack_ix = 0;
3153 PL_scopestack_max = REASONABLE(32);
3155 New(54,PL_savestack,REASONABLE(128),ANY);
3156 PL_savestack_ix = 0;
3157 PL_savestack_max = REASONABLE(128);
3159 New(54,PL_retstack,REASONABLE(16),OP*);
3161 PL_retstack_max = REASONABLE(16);
3169 while (PL_curstackinfo->si_next)
3170 PL_curstackinfo = PL_curstackinfo->si_next;
3171 while (PL_curstackinfo) {
3172 PERL_SI *p = PL_curstackinfo->si_prev;
3173 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3174 Safefree(PL_curstackinfo->si_cxstack);
3175 Safefree(PL_curstackinfo);
3176 PL_curstackinfo = p;
3178 Safefree(PL_tmps_stack);
3179 Safefree(PL_markstack);
3180 Safefree(PL_scopestack);
3181 Safefree(PL_savestack);
3182 Safefree(PL_retstack);
3186 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3197 lex_start(PL_linestr);
3199 PL_subname = newSVpvn("main",4);
3203 S_init_predump_symbols(pTHX)
3208 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3209 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3210 GvMULTI_on(PL_stdingv);
3211 io = GvIOp(PL_stdingv);
3212 IoIFP(io) = PerlIO_stdin();
3213 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3215 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3217 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3220 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3222 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3224 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3226 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3227 GvMULTI_on(PL_stderrgv);
3228 io = GvIOp(PL_stderrgv);
3229 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3230 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3232 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3234 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3237 Safefree(PL_osname);
3238 PL_osname = savepv(OSNAME);
3242 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3248 argc--,argv++; /* skip name of script */
3249 if (PL_doswitches) {
3250 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3253 if (argv[0][1] == '-' && !argv[0][2]) {
3257 if ((s = strchr(argv[0], '='))) {
3259 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3262 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3265 PL_toptarget = NEWSV(0,0);
3266 sv_upgrade(PL_toptarget, SVt_PVFM);
3267 sv_setpvn(PL_toptarget, "", 0);
3268 PL_bodytarget = NEWSV(0,0);
3269 sv_upgrade(PL_bodytarget, SVt_PVFM);
3270 sv_setpvn(PL_bodytarget, "", 0);
3271 PL_formtarget = PL_bodytarget;
3274 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3275 #ifdef MACOS_TRADITIONAL
3276 /* $0 is not majick on a Mac */
3277 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3279 sv_setpv(GvSV(tmpgv),PL_origfilename);
3280 magicname("0", "0", 1);
3283 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3285 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3287 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3289 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3290 GvMULTI_on(PL_argvgv);
3291 (void)gv_AVadd(PL_argvgv);
3292 av_clear(GvAVn(PL_argvgv));
3293 for (; argc > 0; argc--,argv++) {
3294 SV *sv = newSVpv(argv[0],0);
3295 av_push(GvAVn(PL_argvgv),sv);
3296 if (PL_widesyscalls)
3297 (void)sv_utf8_decode(sv);
3300 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3302 GvMULTI_on(PL_envgv);
3303 hv = GvHVn(PL_envgv);
3304 hv_magic(hv, PL_envgv, 'E');
3305 #ifdef USE_ENVIRON_ARRAY
3306 /* Note that if the supplied env parameter is actually a copy
3307 of the global environ then it may now point to free'd memory
3308 if the environment has been modified since. To avoid this
3309 problem we treat env==NULL as meaning 'use the default'
3314 environ[0] = Nullch;
3315 for (; *env; env++) {
3316 if (!(s = strchr(*env,'=')))
3322 sv = newSVpv(s--,0);
3323 (void)hv_store(hv, *env, s - *env, sv, 0);
3325 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3326 /* Sins of the RTL. See note in my_setenv(). */
3327 (void)PerlEnv_putenv(savepv(*env));
3331 #ifdef DYNAMIC_ENV_FETCH
3332 HvNAME(hv) = savepv(ENV_HV_NAME);
3336 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3337 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3341 S_init_perllib(pTHX)
3346 s = PerlEnv_getenv("PERL5LIB");
3348 incpush(s, TRUE, TRUE);
3350 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3352 /* Treat PERL5?LIB as a possible search list logical name -- the
3353 * "natural" VMS idiom for a Unix path string. We allow each
3354 * element to be a set of |-separated directories for compatibility.
3358 if (my_trnlnm("PERL5LIB",buf,0))
3359 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3361 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3365 /* Use the ~-expanded versions of APPLLIB (undocumented),
3366 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3369 incpush(APPLLIB_EXP, TRUE, TRUE);
3373 incpush(ARCHLIB_EXP, FALSE, FALSE);
3375 #ifdef MACOS_TRADITIONAL
3377 struct stat tmpstatbuf;
3378 SV * privdir = NEWSV(55, 0);
3379 char * macperl = PerlEnv_getenv("MACPERL");
3384 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3385 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3386 incpush(SvPVX(privdir), TRUE, FALSE);
3387 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3388 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3389 incpush(SvPVX(privdir), TRUE, FALSE);
3391 SvREFCNT_dec(privdir);
3394 incpush(":", FALSE, FALSE);
3397 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3400 incpush(PRIVLIB_EXP, TRUE, FALSE);
3402 incpush(PRIVLIB_EXP, FALSE, FALSE);
3406 /* sitearch is always relative to sitelib on Windows for
3407 * DLL-based path intuition to work correctly */
3408 # if !defined(WIN32)
3409 incpush(SITEARCH_EXP, FALSE, FALSE);
3415 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3417 incpush(SITELIB_EXP, FALSE, FALSE);
3421 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3422 incpush(SITELIB_STEM, FALSE, TRUE);
3425 #ifdef PERL_VENDORARCH_EXP
3426 /* vendorarch is always relative to vendorlib on Windows for
3427 * DLL-based path intuition to work correctly */
3428 # if !defined(WIN32)
3429 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3433 #ifdef PERL_VENDORLIB_EXP
3435 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3437 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3441 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3442 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3445 #ifdef PERL_OTHERLIBDIRS
3446 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3450 incpush(".", FALSE, FALSE);
3451 #endif /* MACOS_TRADITIONAL */
3454 #if defined(DOSISH) || defined(EPOC)
3455 # define PERLLIB_SEP ';'
3458 # define PERLLIB_SEP '|'
3460 # if defined(MACOS_TRADITIONAL)
3461 # define PERLLIB_SEP ','
3463 # define PERLLIB_SEP ':'
3467 #ifndef PERLLIB_MANGLE
3468 # define PERLLIB_MANGLE(s,n) (s)
3472 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3474 SV *subdir = Nullsv;
3479 if (addsubdirs || addoldvers) {
3480 subdir = sv_newmortal();
3483 /* Break at all separators */
3485 SV *libdir = NEWSV(55,0);
3488 /* skip any consecutive separators */
3489 while ( *p == PERLLIB_SEP ) {
3490 /* Uncomment the next line for PATH semantics */
3491 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3495 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3496 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3501 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3502 p = Nullch; /* break out */
3504 #ifdef MACOS_TRADITIONAL
3505 if (!strchr(SvPVX(libdir), ':'))
3506 sv_insert(libdir, 0, 0, ":", 1);
3507 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3508 sv_catpv(libdir, ":");
3512 * BEFORE pushing libdir onto @INC we may first push version- and
3513 * archname-specific sub-directories.
3515 if (addsubdirs || addoldvers) {
3516 #ifdef PERL_INC_VERSION_LIST
3517 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3518 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3519 const char **incver;
3521 struct stat tmpstatbuf;
3526 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3528 while (unix[len-1] == '/') len--; /* Cosmetic */
3529 sv_usepvn(libdir,unix,len);
3532 PerlIO_printf(Perl_error_log,
3533 "Failed to unixify @INC element \"%s\"\n",
3537 #ifdef MACOS_TRADITIONAL
3538 #define PERL_AV_SUFFIX_FMT ""
3539 #define PERL_ARCH_FMT ":%s"
3541 #define PERL_AV_SUFFIX_FMT "/"
3542 #define PERL_ARCH_FMT "/%s"
3544 /* .../version/archname if -d .../version/archname */
3545 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT PERL_ARCH_FMT,
3547 (int)PERL_REVISION, (int)PERL_VERSION,
3548 (int)PERL_SUBVERSION, ARCHNAME);
3549 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3550 S_ISDIR(tmpstatbuf.st_mode))
3551 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3553 /* .../version if -d .../version */
3554 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT, libdir,
3555 (int)PERL_REVISION, (int)PERL_VERSION,
3556 (int)PERL_SUBVERSION);
3557 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3558 S_ISDIR(tmpstatbuf.st_mode))
3559 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3561 /* .../archname if -d .../archname */
3562 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3563 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3564 S_ISDIR(tmpstatbuf.st_mode))
3565 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3568 #ifdef PERL_INC_VERSION_LIST
3570 for (incver = incverlist; *incver; incver++) {
3571 /* .../xxx if -d .../xxx */
3572 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3573 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3574 S_ISDIR(tmpstatbuf.st_mode))
3575 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3581 /* finally push this lib directory on the end of @INC */
3582 av_push(GvAVn(PL_incgv), libdir);
3587 STATIC struct perl_thread *
3588 S_init_main_thread(pTHX)
3590 #if !defined(PERL_IMPLICIT_CONTEXT)
3591 struct perl_thread *thr;
3595 Newz(53, thr, 1, struct perl_thread);
3596 PL_curcop = &PL_compiling;
3597 thr->interp = PERL_GET_INTERP;
3598 thr->cvcache = newHV();
3599 thr->threadsv = newAV();
3600 /* thr->threadsvp is set when find_threadsv is called */
3601 thr->specific = newAV();
3602 thr->flags = THRf_R_JOINABLE;
3603 MUTEX_INIT(&thr->mutex);
3604 /* Handcraft thrsv similarly to mess_sv */
3605 New(53, PL_thrsv, 1, SV);
3606 Newz(53, xpv, 1, XPV);
3607 SvFLAGS(PL_thrsv) = SVt_PV;
3608 SvANY(PL_thrsv) = (void*)xpv;
3609 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3610 SvPVX(PL_thrsv) = (char*)thr;
3611 SvCUR_set(PL_thrsv, sizeof(thr));
3612 SvLEN_set(PL_thrsv, sizeof(thr));
3613 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3614 thr->oursv = PL_thrsv;
3615 PL_chopset = " \n-";
3618 MUTEX_LOCK(&PL_threads_mutex);
3624 MUTEX_UNLOCK(&PL_threads_mutex);
3626 #ifdef HAVE_THREAD_INTERN
3627 Perl_init_thread_intern(thr);
3630 #ifdef SET_THREAD_SELF
3631 SET_THREAD_SELF(thr);
3633 thr->self = pthread_self();
3634 #endif /* SET_THREAD_SELF */
3638 * These must come after the thread self setting
3639 * because sv_setpvn does SvTAINT and the taint
3640 * fields thread selfness being set.
3642 PL_toptarget = NEWSV(0,0);
3643 sv_upgrade(PL_toptarget, SVt_PVFM);
3644 sv_setpvn(PL_toptarget, "", 0);
3645 PL_bodytarget = NEWSV(0,0);
3646 sv_upgrade(PL_bodytarget, SVt_PVFM);
3647 sv_setpvn(PL_bodytarget, "", 0);
3648 PL_formtarget = PL_bodytarget;
3649 thr->errsv = newSVpvn("", 0);
3650 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3653 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3654 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3655 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3656 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3657 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3659 PL_reginterp_cnt = 0;
3663 #endif /* USE_THREADS */
3666 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3669 line_t oldline = CopLINE(PL_curcop);
3675 while (AvFILL(paramList) >= 0) {
3676 cv = (CV*)av_shift(paramList);
3677 if ((PL_minus_c & 0x10) && (paramList == PL_beginav)) {
3678 /* save PL_beginav for compiler */
3679 if (! PL_beginav_save)
3680 PL_beginav_save = newAV();
3681 av_push(PL_beginav_save, (SV*)cv);
3685 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3686 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3692 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3696 (void)SvPV(atsv, len);
3699 PL_curcop = &PL_compiling;
3700 CopLINE_set(PL_curcop, oldline);
3701 if (paramList == PL_beginav)
3702 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3704 Perl_sv_catpvf(aTHX_ atsv,
3705 "%s failed--call queue aborted",
3706 paramList == PL_checkav ? "CHECK"
3707 : paramList == PL_initav ? "INIT"
3709 while (PL_scopestack_ix > oldscope)
3712 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3719 /* my_exit() was called */
3720 while (PL_scopestack_ix > oldscope)
3723 PL_curstash = PL_defstash;
3724 PL_curcop = &PL_compiling;
3725 CopLINE_set(PL_curcop, oldline);
3727 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3728 if (paramList == PL_beginav)
3729 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3731 Perl_croak(aTHX_ "%s failed--call queue aborted",
3732 paramList == PL_checkav ? "CHECK"
3733 : paramList == PL_initav ? "INIT"
3740 PL_curcop = &PL_compiling;
3741 CopLINE_set(PL_curcop, oldline);
3744 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3752 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3754 S_vcall_list_body(pTHX_ va_list args)
3756 CV *cv = va_arg(args, CV*);
3757 return call_list_body(cv);
3762 S_call_list_body(pTHX_ CV *cv)
3764 PUSHMARK(PL_stack_sp);
3765 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3770 Perl_my_exit(pTHX_ U32 status)
3772 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3773 thr, (unsigned long) status));
3782 STATUS_NATIVE_SET(status);
3789 Perl_my_failure_exit(pTHX)
3792 if (vaxc$errno & 1) {
3793 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3794 STATUS_NATIVE_SET(44);
3797 if (!vaxc$errno && errno) /* unlikely */
3798 STATUS_NATIVE_SET(44);
3800 STATUS_NATIVE_SET(vaxc$errno);
3805 STATUS_POSIX_SET(errno);
3807 exitstatus = STATUS_POSIX >> 8;
3808 if (exitstatus & 255)
3809 STATUS_POSIX_SET(exitstatus);
3811 STATUS_POSIX_SET(255);
3818 S_my_exit_jump(pTHX)
3820 register PERL_CONTEXT *cx;
3825 SvREFCNT_dec(PL_e_script);
3826 PL_e_script = Nullsv;
3829 POPSTACK_TO(PL_mainstack);
3830 if (cxstack_ix >= 0) {
3833 POPBLOCK(cx,PL_curpm);
3845 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3848 p = SvPVX(PL_e_script);
3849 nl = strchr(p, '\n');
3850 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3852 filter_del(read_e_script);
3855 sv_catpvn(buf_sv, p, nl-p);
3856 sv_chop(PL_e_script, nl);