3 * Copyright (c) 1987-1999 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);
43 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
51 perl_alloc(struct IPerlMem* ipM, struct IPerlEnv* ipE,
52 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
53 struct IPerlDir* ipD, struct IPerlSock* ipS,
54 struct IPerlProc* ipP)
56 CPerlObj* pPerl = new(ipM) CPerlObj(ipM, ipE, ipStd, ipLIO, ipD, ipS, ipP);
64 #ifdef PERL_IMPLICIT_SYS
66 perl_alloc_using(struct IPerlMem* ipM, struct IPerlEnv* ipE,
67 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
68 struct IPerlDir* ipD, struct IPerlSock* ipS,
69 struct IPerlProc* ipP)
71 PerlInterpreter *my_perl;
73 /* New() needs interpreter, so call malloc() instead */
74 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
75 PERL_SET_INTERP(my_perl);
76 Zero(my_perl, 1, PerlInterpreter);
90 PerlInterpreter *my_perl;
92 /* New() needs interpreter, so call malloc() instead */
93 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
94 PERL_SET_INTERP(my_perl);
97 #endif /* PERL_IMPLICIT_SYS */
98 #endif /* PERL_OBJECT */
101 perl_construct(pTHXx)
106 struct perl_thread *thr = NULL;
107 #endif /* FAKE_THREADS */
108 #endif /* USE_THREADS */
112 PL_perl_destruct_level = 1;
114 if (PL_perl_destruct_level > 0)
118 /* Init the real globals (and main thread)? */
123 #ifdef ALLOC_THREAD_KEY
126 if (pthread_key_create(&PL_thr_key, 0))
127 Perl_croak(aTHX_ "panic: pthread_key_create");
129 MUTEX_INIT(&PL_sv_mutex);
131 * Safe to use basic SV functions from now on (though
132 * not things like mortals or tainting yet).
134 MUTEX_INIT(&PL_eval_mutex);
135 COND_INIT(&PL_eval_cond);
136 MUTEX_INIT(&PL_threads_mutex);
137 COND_INIT(&PL_nthreads_cond);
138 #ifdef EMULATE_ATOMIC_REFCOUNTS
139 MUTEX_INIT(&PL_svref_mutex);
140 #endif /* EMULATE_ATOMIC_REFCOUNTS */
142 MUTEX_INIT(&PL_cred_mutex);
144 thr = init_main_thread();
145 #endif /* USE_THREADS */
147 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
149 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
151 PL_linestr = NEWSV(65,79);
152 sv_upgrade(PL_linestr,SVt_PVIV);
154 if (!SvREADONLY(&PL_sv_undef)) {
155 /* set read-only and try to insure than we wont see REFCNT==0
158 SvREADONLY_on(&PL_sv_undef);
159 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
161 sv_setpv(&PL_sv_no,PL_No);
163 SvREADONLY_on(&PL_sv_no);
164 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
166 sv_setpv(&PL_sv_yes,PL_Yes);
168 SvREADONLY_on(&PL_sv_yes);
169 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
174 /* PL_sighandlerp = sighandler; */
176 PL_sighandlerp = Perl_sighandler;
178 PL_pidstatus = newHV();
182 * There is no way we can refer to them from Perl so close them to save
183 * space. The other alternative would be to provide STDAUX and STDPRN
186 (void)fclose(stdaux);
187 (void)fclose(stdprn);
191 PL_nrs = newSVpvn("\n", 1);
192 PL_rs = SvREFCNT_inc(PL_nrs);
197 PL_lex_state = LEX_NOTPARSING;
203 SET_NUMERIC_STANDARD();
204 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
205 sprintf(PL_patchlevel, "%7.5f", (double) PERL_REVISION
206 + ((double) PERL_VERSION / (double) 1000)
207 + ((double) PERL_SUBVERSION / (double) 100000));
209 sprintf(PL_patchlevel, "%5.3f", (double) PERL_REVISION +
210 ((double) PERL_VERSION / (double) 1000));
213 #if defined(LOCAL_PATCH_COUNT)
214 PL_localpatches = local_patches; /* For possible -v */
217 PerlIO_init(); /* Hook to IO system */
219 PL_fdpid = newAV(); /* for remembering popen pids by fd */
220 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
223 New(51,PL_debname,128,char);
224 New(52,PL_debdelim,128,char);
234 int destruct_level; /* 0=none, 1=full, 2=full with checks */
240 #endif /* USE_THREADS */
244 /* Pass 1 on any remaining threads: detach joinables, join zombies */
246 MUTEX_LOCK(&PL_threads_mutex);
247 DEBUG_S(PerlIO_printf(Perl_debug_log,
248 "perl_destruct: waiting for %d threads...\n",
250 for (t = thr->next; t != thr; t = t->next) {
251 MUTEX_LOCK(&t->mutex);
252 switch (ThrSTATE(t)) {
255 DEBUG_S(PerlIO_printf(Perl_debug_log,
256 "perl_destruct: joining zombie %p\n", t));
257 ThrSETSTATE(t, THRf_DEAD);
258 MUTEX_UNLOCK(&t->mutex);
261 * The SvREFCNT_dec below may take a long time (e.g. av
262 * may contain an object scalar whose destructor gets
263 * called) so we have to unlock threads_mutex and start
266 MUTEX_UNLOCK(&PL_threads_mutex);
268 SvREFCNT_dec((SV*)av);
269 DEBUG_S(PerlIO_printf(Perl_debug_log,
270 "perl_destruct: joined zombie %p OK\n", t));
272 case THRf_R_JOINABLE:
273 DEBUG_S(PerlIO_printf(Perl_debug_log,
274 "perl_destruct: detaching thread %p\n", t));
275 ThrSETSTATE(t, THRf_R_DETACHED);
277 * We unlock threads_mutex and t->mutex in the opposite order
278 * from which we locked them just so that DETACH won't
279 * deadlock if it panics. It's only a breach of good style
280 * not a bug since they are unlocks not locks.
282 MUTEX_UNLOCK(&PL_threads_mutex);
284 MUTEX_UNLOCK(&t->mutex);
287 DEBUG_S(PerlIO_printf(Perl_debug_log,
288 "perl_destruct: ignoring %p (state %u)\n",
290 MUTEX_UNLOCK(&t->mutex);
291 /* fall through and out */
294 /* We leave the above "Pass 1" loop with threads_mutex still locked */
296 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
297 while (PL_nthreads > 1)
299 DEBUG_S(PerlIO_printf(Perl_debug_log,
300 "perl_destruct: final wait for %d threads\n",
302 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
304 /* At this point, we're the last thread */
305 MUTEX_UNLOCK(&PL_threads_mutex);
306 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
307 MUTEX_DESTROY(&PL_threads_mutex);
308 COND_DESTROY(&PL_nthreads_cond);
309 #endif /* !defined(FAKE_THREADS) */
310 #endif /* USE_THREADS */
312 destruct_level = PL_perl_destruct_level;
316 if (s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL")) {
318 if (destruct_level < i)
327 /* We must account for everything. */
329 /* Destroy the main CV and syntax tree */
331 PL_curpad = AvARRAY(PL_comppad);
332 op_free(PL_main_root);
333 PL_main_root = Nullop;
335 PL_curcop = &PL_compiling;
336 PL_main_start = Nullop;
337 SvREFCNT_dec(PL_main_cv);
341 if (PL_sv_objcount) {
343 * Try to destruct global references. We do this first so that the
344 * destructors and destructees still exist. Some sv's might remain.
345 * Non-referenced objects are on their own.
350 /* unhook hooks which will soon be, or use, destroyed data */
351 SvREFCNT_dec(PL_warnhook);
352 PL_warnhook = Nullsv;
353 SvREFCNT_dec(PL_diehook);
356 /* call exit list functions */
357 while (PL_exitlistlen-- > 0)
358 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
360 Safefree(PL_exitlist);
362 if (destruct_level == 0){
364 DEBUG_P(debprofdump());
366 /* The exit() function will do everything that needs doing. */
370 /* loosen bonds of global variables */
373 (void)PerlIO_close(PL_rsfp);
377 /* Filters for program text */
378 SvREFCNT_dec(PL_rsfp_filters);
379 PL_rsfp_filters = Nullav;
382 PL_preprocess = FALSE;
388 PL_doswitches = FALSE;
389 PL_dowarn = G_WARN_OFF;
390 PL_doextract = FALSE;
391 PL_sawampersand = FALSE; /* must save all match strings */
392 PL_sawstudy = FALSE; /* do fbm_instr on all strings */
396 Safefree(PL_inplace);
400 SvREFCNT_dec(PL_e_script);
401 PL_e_script = Nullsv;
404 /* magical thingies */
406 Safefree(PL_ofs); /* $, */
409 Safefree(PL_ors); /* $\ */
412 SvREFCNT_dec(PL_rs); /* $/ */
415 SvREFCNT_dec(PL_nrs); /* $/ helper */
418 PL_multiline = 0; /* $* */
420 SvREFCNT_dec(PL_statname);
421 PL_statname = Nullsv;
424 /* defgv, aka *_ should be taken care of elsewhere */
426 /* clean up after study() */
427 SvREFCNT_dec(PL_lastscream);
428 PL_lastscream = Nullsv;
429 Safefree(PL_screamfirst);
431 Safefree(PL_screamnext);
435 Safefree(PL_efloatbuf);
436 PL_efloatbuf = Nullch;
439 /* startup and shutdown function lists */
440 SvREFCNT_dec(PL_beginav);
441 SvREFCNT_dec(PL_endav);
442 SvREFCNT_dec(PL_initav);
447 /* shortcuts just get cleared */
454 PL_argvoutgv = Nullgv;
456 PL_stderrgv = Nullgv;
457 PL_last_in_gv = Nullgv;
460 /* reset so print() ends up where we expect */
463 /* Prepare to destruct main symbol table. */
469 /* clear queued errors */
470 SvREFCNT_dec(PL_errors);
474 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
475 if (PL_scopestack_ix != 0)
476 Perl_warner(aTHX_ WARN_INTERNAL,
477 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
478 (long)PL_scopestack_ix);
479 if (PL_savestack_ix != 0)
480 Perl_warner(aTHX_ WARN_INTERNAL,
481 "Unbalanced saves: %ld more saves than restores\n",
482 (long)PL_savestack_ix);
483 if (PL_tmps_floor != -1)
484 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
485 (long)PL_tmps_floor + 1);
486 if (cxstack_ix != -1)
487 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
488 (long)cxstack_ix + 1);
491 /* Now absolutely destruct everything, somehow or other, loops or no. */
493 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
494 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
495 last_sv_count = PL_sv_count;
498 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
499 SvFLAGS(PL_strtab) |= SVt_PVHV;
501 /* Destruct the global string table. */
503 /* Yell and reset the HeVAL() slots that are still holding refcounts,
504 * so that sv_free() won't fail on them.
512 max = HvMAX(PL_strtab);
513 array = HvARRAY(PL_strtab);
516 if (hent && ckWARN_d(WARN_INTERNAL)) {
517 Perl_warner(aTHX_ WARN_INTERNAL,
518 "Unbalanced string table refcount: (%d) for \"%s\"",
519 HeVAL(hent) - Nullsv, HeKEY(hent));
520 HeVAL(hent) = Nullsv;
530 SvREFCNT_dec(PL_strtab);
532 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
533 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
537 /* No SVs have survived, need to clean out */
539 PL_pidstatus = Nullhv;
540 Safefree(PL_origfilename);
541 Safefree(PL_archpat_auto);
542 Safefree(PL_reg_start_tmp);
544 Safefree(PL_reg_curpm);
545 Safefree(PL_reg_poscache);
546 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
547 Safefree(PL_op_mask);
549 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
551 DEBUG_P(debprofdump());
553 MUTEX_DESTROY(&PL_strtab_mutex);
554 MUTEX_DESTROY(&PL_sv_mutex);
555 MUTEX_DESTROY(&PL_eval_mutex);
556 MUTEX_DESTROY(&PL_cred_mutex);
557 COND_DESTROY(&PL_eval_cond);
558 #ifdef EMULATE_ATOMIC_REFCOUNTS
559 MUTEX_DESTROY(&PL_svref_mutex);
560 #endif /* EMULATE_ATOMIC_REFCOUNTS */
562 /* As the penultimate thing, free the non-arena SV for thrsv */
563 Safefree(SvPVX(PL_thrsv));
564 Safefree(SvANY(PL_thrsv));
567 #endif /* USE_THREADS */
569 /* As the absolutely last thing, free the non-arena SV for mess() */
572 /* it could have accumulated taint magic */
573 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
576 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
577 moremagic = mg->mg_moremagic;
578 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
579 Safefree(mg->mg_ptr);
583 /* we know that type >= SVt_PV */
584 SvOOK_off(PL_mess_sv);
585 Safefree(SvPVX(PL_mess_sv));
586 Safefree(SvANY(PL_mess_sv));
587 Safefree(PL_mess_sv);
595 #if defined(PERL_OBJECT)
603 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
605 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
606 PL_exitlist[PL_exitlistlen].fn = fn;
607 PL_exitlist[PL_exitlistlen].ptr = ptr;
612 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
622 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
625 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
626 setuid perl scripts securely.\n");
630 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
631 _dyld_lookup_and_bind
632 ("__environ", (unsigned long *) &environ_pointer, NULL);
637 #ifndef VMS /* VMS doesn't have environ array */
638 PL_origenviron = environ;
643 /* Come here if running an undumped a.out. */
645 PL_origfilename = savepv(argv[0]);
646 PL_do_undump = FALSE;
647 cxstack_ix = -1; /* start label stack again */
649 init_postdump_symbols(argc,argv,env);
654 PL_curpad = AvARRAY(PL_comppad);
655 op_free(PL_main_root);
656 PL_main_root = Nullop;
658 PL_main_start = Nullop;
659 SvREFCNT_dec(PL_main_cv);
663 oldscope = PL_scopestack_ix;
664 PL_dowarn = G_WARN_OFF;
666 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_parse_body),
675 /* my_exit() was called */
676 while (PL_scopestack_ix > oldscope)
679 PL_curstash = PL_defstash;
680 if (PL_endav && !PL_minus_c)
681 call_list(oldscope, PL_endav);
682 return STATUS_NATIVE_EXPORT;
684 PerlIO_printf(Perl_error_log, "panic: top_env\n");
691 S_parse_body(pTHX_ va_list args)
694 int argc = PL_origargc;
695 char **argv = PL_origargv;
696 char **env = va_arg(args, char**);
697 char *scriptname = NULL;
699 VOL bool dosearch = FALSE;
705 XSINIT_t xsinit = va_arg(args, XSINIT_t);
707 sv_setpvn(PL_linestr,"",0);
708 sv = newSVpvn("",0); /* first used for -I flags */
712 for (argc--,argv++; argc > 0; argc--,argv++) {
713 if (argv[0][0] != '-' || !argv[0][1])
717 validarg = " PHOOEY ";
724 #ifndef PERL_STRICT_CR
748 if (s = moreswitches(s))
758 if (PL_euid != PL_uid || PL_egid != PL_gid)
759 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
761 PL_e_script = newSVpvn("",0);
762 filter_add(read_e_script, NULL);
765 sv_catpv(PL_e_script, s);
767 sv_catpv(PL_e_script, argv[1]);
771 Perl_croak(aTHX_ "No code specified for -e");
772 sv_catpv(PL_e_script, "\n");
775 case 'I': /* -I handled both here and in moreswitches() */
777 if (!*++s && (s=argv[1]) != Nullch) {
780 while (s && isSPACE(*s))
784 for (e = s; *e && !isSPACE(*e); e++) ;
791 } /* XXX else croak? */
795 PL_preprocess = TRUE;
805 PL_preambleav = newAV();
806 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
808 PL_Sv = newSVpv("print myconfig();",0);
810 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
812 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
814 sv_catpv(PL_Sv,"\" Compile-time options:");
816 sv_catpv(PL_Sv," DEBUGGING");
819 sv_catpv(PL_Sv," MULTIPLICITY");
822 sv_catpv(PL_Sv," USE_THREADS");
825 sv_catpv(PL_Sv," PERL_OBJECT");
827 # ifdef PERL_IMPLICIT_CONTEXT
828 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
830 # ifdef PERL_IMPLICIT_SYS
831 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
833 sv_catpv(PL_Sv,"\\n\",");
835 #if defined(LOCAL_PATCH_COUNT)
836 if (LOCAL_PATCH_COUNT > 0) {
838 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
839 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
840 if (PL_localpatches[i])
841 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
845 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
848 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
850 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
855 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
856 print \" \\%ENV:\\n @env\\n\" if @env; \
857 print \" \\@INC:\\n @INC\\n\";");
860 PL_Sv = newSVpv("config_vars(qw(",0);
861 sv_catpv(PL_Sv, ++s);
862 sv_catpv(PL_Sv, "))");
865 av_push(PL_preambleav, PL_Sv);
866 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
872 PL_cddir = savepv(s);
877 if (!*++s || isSPACE(*s)) {
881 /* catch use of gnu style long options */
882 if (strEQ(s, "version")) {
886 if (strEQ(s, "help")) {
893 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
899 #ifndef SECURE_INTERNAL_GETENV
902 (s = PerlEnv_getenv("PERL5OPT"))) {
905 if (*s == '-' && *(s+1) == 'T')
918 if (!strchr("DIMUdmw", *s))
919 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
926 scriptname = argv[0];
929 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
931 else if (scriptname == Nullch) {
933 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
941 open_script(scriptname,dosearch,sv,&fdscript);
943 validate_suid(validarg, scriptname,fdscript);
948 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
949 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
950 CvUNIQUE_on(PL_compcv);
952 PL_comppad = newAV();
953 av_push(PL_comppad, Nullsv);
954 PL_curpad = AvARRAY(PL_comppad);
955 PL_comppad_name = newAV();
956 PL_comppad_name_fill = 0;
957 PL_min_intro_pending = 0;
960 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
961 PL_curpad[0] = (SV*)newAV();
962 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
963 CvOWNER(PL_compcv) = 0;
964 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
965 MUTEX_INIT(CvMUTEXP(PL_compcv));
966 #endif /* USE_THREADS */
968 comppadlist = newAV();
969 AvREAL_off(comppadlist);
970 av_store(comppadlist, 0, (SV*)PL_comppad_name);
971 av_store(comppadlist, 1, (SV*)PL_comppad);
972 CvPADLIST(PL_compcv) = comppadlist;
974 boot_core_UNIVERSAL();
978 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
979 #if defined(VMS) || defined(WIN32) || defined(DJGPP)
987 init_predump_symbols();
988 /* init_postdump_symbols not currently designed to be called */
989 /* more than once (ENV isn't cleared first, for example) */
990 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
992 init_postdump_symbols(argc,argv,env);
996 /* now parse the script */
998 SETERRNO(0,SS$_NORMAL);
1000 if (yyparse() || PL_error_count) {
1002 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1004 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1008 PL_curcop->cop_line = 0;
1009 PL_curstash = PL_defstash;
1010 PL_preprocess = FALSE;
1012 SvREFCNT_dec(PL_e_script);
1013 PL_e_script = Nullsv;
1016 /* now that script is parsed, we can modify record separator */
1017 SvREFCNT_dec(PL_rs);
1018 PL_rs = SvREFCNT_inc(PL_nrs);
1019 sv_setsv(get_sv("/", TRUE), PL_rs);
1024 gv_check(PL_defstash);
1030 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1031 dump_mstats("after compilation:");
1050 oldscope = PL_scopestack_ix;
1053 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_run_body), oldscope);
1056 cxstack_ix = -1; /* start context stack again */
1058 case 0: /* normal completion */
1059 case 2: /* my_exit() */
1060 while (PL_scopestack_ix > oldscope)
1063 PL_curstash = PL_defstash;
1064 if (PL_endav && !PL_minus_c)
1065 call_list(oldscope, PL_endav);
1067 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1068 dump_mstats("after execution: ");
1070 return STATUS_NATIVE_EXPORT;
1073 POPSTACK_TO(PL_mainstack);
1076 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1086 S_run_body(pTHX_ va_list args)
1089 I32 oldscope = va_arg(args, I32);
1091 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1092 PL_sawampersand ? "Enabling" : "Omitting"));
1094 if (!PL_restartop) {
1095 DEBUG_x(dump_all());
1096 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1097 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1101 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1104 if (PERLDB_SINGLE && PL_DBsingle)
1105 sv_setiv(PL_DBsingle, 1);
1107 call_list(oldscope, PL_initav);
1113 PL_op = PL_restartop;
1117 else if (PL_main_start) {
1118 CvDEPTH(PL_main_cv) = 1;
1119 PL_op = PL_main_start;
1129 Perl_get_sv(pTHX_ const char *name, I32 create)
1133 if (name[1] == '\0' && !isALPHA(name[0])) {
1134 PADOFFSET tmp = find_threadsv(name);
1135 if (tmp != NOT_IN_PAD) {
1137 return THREADSV(tmp);
1140 #endif /* USE_THREADS */
1141 gv = gv_fetchpv(name, create, SVt_PV);
1148 Perl_get_av(pTHX_ const char *name, I32 create)
1150 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1159 Perl_get_hv(pTHX_ const char *name, I32 create)
1161 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1170 Perl_get_cv(pTHX_ const char *name, I32 create)
1172 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1173 /* XXX unsafe for threads if eval_owner isn't held */
1174 /* XXX this is probably not what they think they're getting.
1175 * It has the same effect as "sub name;", i.e. just a forward
1177 if (create && !GvCVu(gv))
1178 return newSUB(start_subparse(FALSE, 0),
1179 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1187 /* Be sure to refetch the stack pointer after calling these routines. */
1190 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1192 /* See G_* flags in cop.h */
1193 /* null terminated arg list */
1200 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1205 return call_pv(sub_name, flags);
1209 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1210 /* name of the subroutine */
1211 /* See G_* flags in cop.h */
1213 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1217 Perl_call_method(pTHX_ const char *methname, I32 flags)
1218 /* name of the subroutine */
1219 /* See G_* flags in cop.h */
1225 XPUSHs(sv_2mortal(newSVpv(methname,0)));
1230 return call_sv(*PL_stack_sp--, flags);
1233 /* May be called with any of a CV, a GV, or an SV containing the name. */
1235 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1237 /* See G_* flags in cop.h */
1240 LOGOP myop; /* fake syntax tree node */
1244 bool oldcatch = CATCH_GET;
1249 if (flags & G_DISCARD) {
1254 Zero(&myop, 1, LOGOP);
1255 myop.op_next = Nullop;
1256 if (!(flags & G_NOARGS))
1257 myop.op_flags |= OPf_STACKED;
1258 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1259 (flags & G_ARRAY) ? OPf_WANT_LIST :
1264 EXTEND(PL_stack_sp, 1);
1265 *++PL_stack_sp = sv;
1267 oldscope = PL_scopestack_ix;
1269 if (PERLDB_SUB && PL_curstash != PL_debstash
1270 /* Handle first BEGIN of -d. */
1271 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1272 /* Try harder, since this may have been a sighandler, thus
1273 * curstash may be meaningless. */
1274 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1275 && !(flags & G_NODEBUG))
1276 PL_op->op_private |= OPpENTERSUB_DB;
1278 if (!(flags & G_EVAL)) {
1280 call_xbody((OP*)&myop, FALSE);
1281 retval = PL_stack_sp - (PL_stack_base + oldmark);
1282 CATCH_SET(oldcatch);
1285 cLOGOP->op_other = PL_op;
1287 /* we're trying to emulate pp_entertry() here */
1289 register PERL_CONTEXT *cx;
1290 I32 gimme = GIMME_V;
1295 push_return(PL_op->op_next);
1296 PUSHBLOCK(cx, CXt_EVAL, PL_stack_sp);
1298 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1300 PL_in_eval = EVAL_INEVAL;
1301 if (flags & G_KEEPERR)
1302 PL_in_eval |= EVAL_KEEPERR;
1309 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_call_body),
1313 retval = PL_stack_sp - (PL_stack_base + oldmark);
1314 if (!(flags & G_KEEPERR))
1321 /* my_exit() was called */
1322 PL_curstash = PL_defstash;
1325 Perl_croak(aTHX_ "Callback called exit");
1330 PL_op = PL_restartop;
1334 PL_stack_sp = PL_stack_base + oldmark;
1335 if (flags & G_ARRAY)
1339 *++PL_stack_sp = &PL_sv_undef;
1344 if (PL_scopestack_ix > oldscope) {
1348 register PERL_CONTEXT *cx;
1359 if (flags & G_DISCARD) {
1360 PL_stack_sp = PL_stack_base + oldmark;
1370 S_call_body(pTHX_ va_list args)
1372 OP *myop = va_arg(args, OP*);
1373 int is_eval = va_arg(args, int);
1375 call_xbody(myop, is_eval);
1380 S_call_xbody(pTHX_ OP *myop, int is_eval)
1384 if (PL_op == myop) {
1386 PL_op = Perl_pp_entereval(aTHX);
1388 PL_op = Perl_pp_entersub(aTHX);
1394 /* Eval a string. The G_EVAL flag is always assumed. */
1397 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1399 /* See G_* flags in cop.h */
1402 UNOP myop; /* fake syntax tree node */
1403 I32 oldmark = SP - PL_stack_base;
1410 if (flags & G_DISCARD) {
1417 Zero(PL_op, 1, UNOP);
1418 EXTEND(PL_stack_sp, 1);
1419 *++PL_stack_sp = sv;
1420 oldscope = PL_scopestack_ix;
1422 if (!(flags & G_NOARGS))
1423 myop.op_flags = OPf_STACKED;
1424 myop.op_next = Nullop;
1425 myop.op_type = OP_ENTEREVAL;
1426 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1427 (flags & G_ARRAY) ? OPf_WANT_LIST :
1429 if (flags & G_KEEPERR)
1430 myop.op_flags |= OPf_SPECIAL;
1433 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_call_body),
1437 retval = PL_stack_sp - (PL_stack_base + oldmark);
1438 if (!(flags & G_KEEPERR))
1445 /* my_exit() was called */
1446 PL_curstash = PL_defstash;
1449 Perl_croak(aTHX_ "Callback called exit");
1454 PL_op = PL_restartop;
1458 PL_stack_sp = PL_stack_base + oldmark;
1459 if (flags & G_ARRAY)
1463 *++PL_stack_sp = &PL_sv_undef;
1468 if (flags & G_DISCARD) {
1469 PL_stack_sp = PL_stack_base + oldmark;
1479 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1482 SV* sv = newSVpv(p, 0);
1485 eval_sv(sv, G_SCALAR);
1492 if (croak_on_error && SvTRUE(ERRSV)) {
1494 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1500 /* Require a module. */
1503 Perl_require_pv(pTHX_ const char *pv)
1507 PUSHSTACKi(PERLSI_REQUIRE);
1509 sv = sv_newmortal();
1510 sv_setpv(sv, "require '");
1513 eval_sv(sv, G_DISCARD);
1519 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
1523 if (gv = gv_fetchpv(sym,TRUE, SVt_PV))
1524 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1528 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
1530 /* This message really ought to be max 23 lines.
1531 * Removed -h because the user already knows that opton. Others? */
1533 static char *usage_msg[] = {
1534 "-0[octal] specify record separator (\\0, if no argument)",
1535 "-a autosplit mode with -n or -p (splits $_ into @F)",
1536 "-c check syntax only (runs BEGIN and END blocks)",
1537 "-d[:debugger] run program under debugger",
1538 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1539 "-e 'command' one line of program (several -e's allowed, omit programfile)",
1540 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
1541 "-i[extension] edit <> files in place (makes backup if extension supplied)",
1542 "-Idirectory specify @INC/#include directory (several -I's allowed)",
1543 "-l[octal] enable line ending processing, specifies line terminator",
1544 "-[mM][-]module execute `use/no module...' before executing program",
1545 "-n assume 'while (<>) { ... }' loop around program",
1546 "-p assume loop like -n but print line also, like sed",
1547 "-P run program through C preprocessor before compilation",
1548 "-s enable rudimentary parsing for switches after programfile",
1549 "-S look for programfile using PATH environment variable",
1550 "-T enable tainting checks",
1551 "-u dump core after parsing program",
1552 "-U allow unsafe operations",
1553 "-v print version, subversion (includes VERY IMPORTANT perl info)",
1554 "-V[:variable] print configuration summary (or a single Config.pm variable)",
1555 "-w enable many useful warnings (RECOMMENDED)",
1556 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
1560 char **p = usage_msg;
1562 printf("\nUsage: %s [switches] [--] [programfile] [arguments]", name);
1564 printf("\n %s", *p++);
1567 /* This routine handles any switches that can be given during run */
1570 Perl_moreswitches(pTHX_ char *s)
1579 rschar = scan_oct(s, 4, &numlen);
1580 SvREFCNT_dec(PL_nrs);
1581 if (rschar & ~((U8)~0))
1582 PL_nrs = &PL_sv_undef;
1583 else if (!rschar && numlen >= 2)
1584 PL_nrs = newSVpvn("", 0);
1587 PL_nrs = newSVpvn(&ch, 1);
1593 PL_splitstr = savepv(s + 1);
1607 if (*s == ':' || *s == '=') {
1608 my_setenv("PERL5DB", Perl_form(aTHX_ "use Devel::%s;", ++s));
1612 PL_perldb = PERLDB_ALL;
1620 if (isALPHA(s[1])) {
1621 static char debopts[] = "psltocPmfrxuLHXDS";
1624 for (s++; *s && (d = strchr(debopts,*s)); s++)
1625 PL_debug |= 1 << (d - debopts);
1628 PL_debug = atoi(s+1);
1629 for (s++; isDIGIT(*s); s++) ;
1631 PL_debug |= 0x80000000;
1634 if (ckWARN_d(WARN_DEBUGGING))
1635 Perl_warner(aTHX_ WARN_DEBUGGING,
1636 "Recompile perl with -DDEBUGGING to use -D switch\n");
1637 for (s++; isALNUM(*s); s++) ;
1643 usage(PL_origargv[0]);
1647 Safefree(PL_inplace);
1648 PL_inplace = savepv(s+1);
1650 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
1653 if (*s == '-') /* Additional switches on #! line. */
1657 case 'I': /* -I handled both here and in parse_perl() */
1660 while (*s && isSPACE(*s))
1664 for (e = s; *e && !isSPACE(*e); e++) ;
1665 p = savepvn(s, e-s);
1671 Perl_croak(aTHX_ "No space allowed after -I");
1679 PL_ors = savepv("\n");
1681 *PL_ors = scan_oct(s, 3 + (*s == '0'), &numlen);
1686 if (RsPARA(PL_nrs)) {
1691 PL_ors = SvPV(PL_nrs, PL_orslen);
1692 PL_ors = savepvn(PL_ors, PL_orslen);
1696 forbid_setid("-M"); /* XXX ? */
1699 forbid_setid("-m"); /* XXX ? */
1704 /* -M-foo == 'no foo' */
1705 if (*s == '-') { use = "no "; ++s; }
1706 sv = newSVpv(use,0);
1708 /* We allow -M'Module qw(Foo Bar)' */
1709 while(isALNUM(*s) || *s==':') ++s;
1711 sv_catpv(sv, start);
1712 if (*(start-1) == 'm') {
1714 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
1715 sv_catpv( sv, " ()");
1718 sv_catpvn(sv, start, s-start);
1719 sv_catpv(sv, " split(/,/,q{");
1724 if (PL_preambleav == NULL)
1725 PL_preambleav = newAV();
1726 av_push(PL_preambleav, sv);
1729 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1741 PL_doswitches = TRUE;
1746 Perl_croak(aTHX_ "Too late for \"-T\" option");
1750 PL_do_undump = TRUE;
1758 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
1759 printf("\nThis is perl, version %d.%03d_%02d built for %s",
1760 PERL_REVISION, PERL_VERSION, PERL_SUBVERSION, ARCHNAME);
1762 printf("\nThis is perl, version %s built for %s",
1763 PL_patchlevel, ARCHNAME);
1765 #if defined(LOCAL_PATCH_COUNT)
1766 if (LOCAL_PATCH_COUNT > 0)
1767 printf("\n(with %d registered patch%s, see perl -V for more detail)",
1768 (int)LOCAL_PATCH_COUNT, (LOCAL_PATCH_COUNT!=1) ? "es" : "");
1771 printf("\n\nCopyright 1987-1999, Larry Wall\n");
1773 printf("\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
1776 printf("djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n");
1777 printf("djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
1780 printf("\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
1781 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
1784 printf("atariST series port, ++jrb bammi@cadence.com\n");
1787 printf("BeOS port Copyright Tom Spindler, 1997-1999\n");
1790 printf("MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
1793 printf("MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
1796 printf("Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
1799 printf("VM/ESA port by Neale Ferguson, 1998-1999\n");
1802 printf("BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
1805 printf("MiNT port by Guido Flohr, 1997-1999\n");
1807 #ifdef BINARY_BUILD_NOTICE
1808 BINARY_BUILD_NOTICE;
1811 Perl may be copied only under the terms of either the Artistic License or the\n\
1812 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
1813 Complete documentation for Perl, including FAQ lists, should be found on\n\
1814 this system using `man perl' or `perldoc perl'. If you have access to the\n\
1815 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
1818 if (! (PL_dowarn & G_WARN_ALL_MASK))
1819 PL_dowarn |= G_WARN_ON;
1823 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
1824 PL_compiling.cop_warnings = WARN_ALL ;
1828 PL_dowarn = G_WARN_ALL_OFF;
1829 PL_compiling.cop_warnings = WARN_NONE ;
1834 if (s[1] == '-') /* Additional switches on #! line. */
1839 #if defined(WIN32) || !defined(PERL_STRICT_CR)
1845 #ifdef ALTERNATE_SHEBANG
1846 case 'S': /* OS/2 needs -S on "extproc" line. */
1854 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
1859 /* compliments of Tom Christiansen */
1861 /* unexec() can be found in the Gnu emacs distribution */
1862 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
1865 Perl_my_unexec(pTHX)
1873 prog = newSVpv(BIN_EXP, 0);
1874 sv_catpv(prog, "/perl");
1875 file = newSVpv(PL_origfilename, 0);
1876 sv_catpv(file, ".perldump");
1878 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
1879 /* unexec prints msg to stderr in case of failure */
1880 PerlProc_exit(status);
1883 # include <lib$routines.h>
1884 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
1886 ABORT(); /* for use with undump */
1891 /* initialize curinterp */
1896 #ifdef PERL_OBJECT /* XXX kludge */
1899 PL_chopset = " \n-"; \
1900 PL_copline = NOLINE; \
1901 PL_curcop = &PL_compiling;\
1902 PL_curcopdb = NULL; \
1905 PL_dumpindent = 4; \
1906 PL_laststatval = -1; \
1907 PL_laststype = OP_STAT; \
1908 PL_maxscream = -1; \
1909 PL_maxsysfd = MAXSYSFD; \
1910 PL_statname = Nullsv; \
1911 PL_tmps_floor = -1; \
1913 PL_op_mask = NULL; \
1915 PL_laststatval = -1; \
1916 PL_laststype = OP_STAT; \
1917 PL_mess_sv = Nullsv; \
1918 PL_splitstr = " "; \
1919 PL_generation = 100; \
1920 PL_exitlist = NULL; \
1921 PL_exitlistlen = 0; \
1923 PL_in_clean_objs = FALSE; \
1924 PL_in_clean_all = FALSE; \
1925 PL_profiledata = NULL; \
1927 PL_rsfp_filters = Nullav; \
1932 # ifdef MULTIPLICITY
1933 # define PERLVAR(var,type)
1934 # define PERLVARA(var,n,type)
1935 # if defined(PERL_IMPLICIT_CONTEXT)
1936 # if defined(USE_THREADS)
1937 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
1938 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
1939 # else /* !USE_THREADS */
1940 # define PERLVARI(var,type,init) aTHX->var = init;
1941 # define PERLVARIC(var,type,init) aTHX->var = init;
1942 # endif /* USE_THREADS */
1944 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
1945 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
1947 # include "intrpvar.h"
1948 # ifndef USE_THREADS
1949 # include "thrdvar.h"
1956 # define PERLVAR(var,type)
1957 # define PERLVARA(var,n,type)
1958 # define PERLVARI(var,type,init) PL_##var = init;
1959 # define PERLVARIC(var,type,init) PL_##var = init;
1960 # include "intrpvar.h"
1961 # ifndef USE_THREADS
1962 # include "thrdvar.h"
1974 S_init_main_stash(pTHX)
1979 /* Note that strtab is a rather special HV. Assumptions are made
1980 about not iterating on it, and not adding tie magic to it.
1981 It is properly deallocated in perl_destruct() */
1982 PL_strtab = newHV();
1984 MUTEX_INIT(&PL_strtab_mutex);
1986 HvSHAREKEYS_off(PL_strtab); /* mandatory */
1987 hv_ksplit(PL_strtab, 512);
1989 PL_curstash = PL_defstash = newHV();
1990 PL_curstname = newSVpvn("main",4);
1991 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
1992 SvREFCNT_dec(GvHV(gv));
1993 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
1995 HvNAME(PL_defstash) = savepv("main");
1996 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
1997 GvMULTI_on(PL_incgv);
1998 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
1999 GvMULTI_on(PL_hintgv);
2000 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2001 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2002 GvMULTI_on(PL_errgv);
2003 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2004 GvMULTI_on(PL_replgv);
2005 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2006 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2007 sv_setpvn(ERRSV, "", 0);
2008 PL_curstash = PL_defstash;
2009 PL_compiling.cop_stash = PL_defstash;
2010 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2011 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2012 /* We must init $/ before switches are processed. */
2013 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2017 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2025 PL_origfilename = savepv("-e");
2028 /* if find_script() returns, it returns a malloc()-ed value */
2029 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2031 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2032 char *s = scriptname + 8;
2033 *fdscript = atoi(s);
2037 scriptname = savepv(s + 1);
2038 Safefree(PL_origfilename);
2039 PL_origfilename = scriptname;
2044 PL_curcop->cop_filegv = gv_fetchfile(PL_origfilename);
2045 if (strEQ(PL_origfilename,"-"))
2047 if (*fdscript >= 0) {
2048 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2049 #if defined(HAS_FCNTL) && defined(F_SETFD)
2051 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2054 else if (PL_preprocess) {
2055 char *cpp_cfg = CPPSTDIN;
2056 SV *cpp = newSVpvn("",0);
2057 SV *cmd = NEWSV(0,0);
2059 if (strEQ(cpp_cfg, "cppstdin"))
2060 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2061 sv_catpv(cpp, cpp_cfg);
2064 sv_catpv(sv,PRIVLIB_EXP);
2067 Perl_sv_setpvf(aTHX_ cmd, "\
2068 sed %s -e \"/^[^#]/b\" \
2069 -e \"/^#[ ]*include[ ]/b\" \
2070 -e \"/^#[ ]*define[ ]/b\" \
2071 -e \"/^#[ ]*if[ ]/b\" \
2072 -e \"/^#[ ]*ifdef[ ]/b\" \
2073 -e \"/^#[ ]*ifndef[ ]/b\" \
2074 -e \"/^#[ ]*else/b\" \
2075 -e \"/^#[ ]*elif[ ]/b\" \
2076 -e \"/^#[ ]*undef[ ]/b\" \
2077 -e \"/^#[ ]*endif/b\" \
2080 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2083 Perl_sv_setpvf(aTHX_ cmd, "\
2084 %s %s -e '/^[^#]/b' \
2085 -e '/^#[ ]*include[ ]/b' \
2086 -e '/^#[ ]*define[ ]/b' \
2087 -e '/^#[ ]*if[ ]/b' \
2088 -e '/^#[ ]*ifdef[ ]/b' \
2089 -e '/^#[ ]*ifndef[ ]/b' \
2090 -e '/^#[ ]*else/b' \
2091 -e '/^#[ ]*elif[ ]/b' \
2092 -e '/^#[ ]*undef[ ]/b' \
2093 -e '/^#[ ]*endif/b' \
2097 Perl_sv_setpvf(aTHX_ cmd, "\
2098 %s %s -e '/^[^#]/b' \
2099 -e '/^#[ ]*include[ ]/b' \
2100 -e '/^#[ ]*define[ ]/b' \
2101 -e '/^#[ ]*if[ ]/b' \
2102 -e '/^#[ ]*ifdef[ ]/b' \
2103 -e '/^#[ ]*ifndef[ ]/b' \
2104 -e '/^#[ ]*else/b' \
2105 -e '/^#[ ]*elif[ ]/b' \
2106 -e '/^#[ ]*undef[ ]/b' \
2107 -e '/^#[ ]*endif/b' \
2116 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2118 scriptname, cpp, sv, CPPMINUS);
2119 PL_doextract = FALSE;
2120 #ifdef IAMSUID /* actually, this is caught earlier */
2121 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2123 (void)seteuid(PL_uid); /* musn't stay setuid root */
2126 (void)setreuid((Uid_t)-1, PL_uid);
2128 #ifdef HAS_SETRESUID
2129 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2131 PerlProc_setuid(PL_uid);
2135 if (PerlProc_geteuid() != PL_uid)
2136 Perl_croak(aTHX_ "Can't do seteuid!\n");
2138 #endif /* IAMSUID */
2139 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2143 else if (!*scriptname) {
2144 forbid_setid("program input from stdin");
2145 PL_rsfp = PerlIO_stdin();
2148 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2149 #if defined(HAS_FCNTL) && defined(F_SETFD)
2151 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2156 #ifndef IAMSUID /* in case script is not readable before setuid */
2158 PerlLIO_stat(SvPVX(GvSV(PL_curcop->cop_filegv)),&PL_statbuf) >= 0 &&
2159 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2162 PerlProc_execv(Perl_form(aTHX_ "%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv);
2163 Perl_croak(aTHX_ "Can't do setuid\n");
2167 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2168 SvPVX(GvSV(PL_curcop->cop_filegv)), Strerror(errno));
2173 * I_SYSSTATVFS HAS_FSTATVFS
2175 * I_STATFS HAS_FSTATFS
2176 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2177 * here so that metaconfig picks them up. */
2181 S_fd_on_nosuid_fs(pTHX_ int fd)
2186 * Preferred order: fstatvfs(), fstatfs(), getmntent().
2187 * fstatvfs() is UNIX98.
2189 * getmntent() is O(number-of-mounted-filesystems) and can hang.
2192 # ifdef HAS_FSTATVFS
2193 struct statvfs stfs;
2194 check_okay = fstatvfs(fd, &stfs) == 0;
2195 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2197 # if defined(HAS_FSTATFS) && defined(HAS_STRUCT_STATFS_FLAGS)
2199 check_okay = fstatfs(fd, &stfs) == 0;
2200 # undef PERL_MOUNT_NOSUID
2201 # if !defined(PERL_MOUNT_NOSUID) && defined(MNT_NOSUID)
2202 # define PERL_MOUNT_NOSUID MNT_NOSUID
2204 # if !defined(PERL_MOUNT_NOSUID) && defined(MS_NOSUID)
2205 # define PERL_MOUNT_NOSUID MS_NOSUID
2207 # if !defined(PERL_MOUNT_NOSUID) && defined(M_NOSUID)
2208 # define PERL_MOUNT_NOSUID M_NOSUID
2210 # ifdef PERL_MOUNT_NOSUID
2211 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2214 # if defined(HAS_GETMNTENT) && defined(HAS_HASMNTOPT) && defined(MNTOPT_NOSUID)
2215 FILE *mtab = fopen("/etc/mtab", "r");
2216 struct mntent *entry;
2217 struct stat stb, fsb;
2219 if (mtab && (fstat(fd, &stb) == 0)) {
2220 while (entry = getmntent(mtab)) {
2221 if (stat(entry->mnt_dir, &fsb) == 0
2222 && fsb.st_dev == stb.st_dev)
2224 /* found the filesystem */
2226 if (hasmntopt(entry, MNTOPT_NOSUID))
2229 } /* A single fs may well fail its stat(). */
2234 # endif /* mntent */
2235 # endif /* statfs */
2236 # endif /* statvfs */
2238 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\"", PL_origfilename);
2241 #endif /* IAMSUID */
2244 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2248 /* do we need to emulate setuid on scripts? */
2250 /* This code is for those BSD systems that have setuid #! scripts disabled
2251 * in the kernel because of a security problem. Merely defining DOSUID
2252 * in perl will not fix that problem, but if you have disabled setuid
2253 * scripts in the kernel, this will attempt to emulate setuid and setgid
2254 * on scripts that have those now-otherwise-useless bits set. The setuid
2255 * root version must be called suidperl or sperlN.NNN. If regular perl
2256 * discovers that it has opened a setuid script, it calls suidperl with
2257 * the same argv that it had. If suidperl finds that the script it has
2258 * just opened is NOT setuid root, it sets the effective uid back to the
2259 * uid. We don't just make perl setuid root because that loses the
2260 * effective uid we had before invoking perl, if it was different from the
2263 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2264 * be defined in suidperl only. suidperl must be setuid root. The
2265 * Configure script will set this up for you if you want it.
2272 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2273 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2274 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2279 #ifndef HAS_SETREUID
2280 /* On this access check to make sure the directories are readable,
2281 * there is actually a small window that the user could use to make
2282 * filename point to an accessible directory. So there is a faint
2283 * chance that someone could execute a setuid script down in a
2284 * non-accessible directory. I don't know what to do about that.
2285 * But I don't think it's too important. The manual lies when
2286 * it says access() is useful in setuid programs.
2288 if (PerlLIO_access(SvPVX(GvSV(PL_curcop->cop_filegv)),1)) /*double check*/
2289 Perl_croak(aTHX_ "Permission denied");
2291 /* If we can swap euid and uid, then we can determine access rights
2292 * with a simple stat of the file, and then compare device and
2293 * inode to make sure we did stat() on the same file we opened.
2294 * Then we just have to make sure he or she can execute it.
2297 struct stat tmpstatbuf;
2301 setreuid(PL_euid,PL_uid) < 0
2304 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2307 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2308 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2309 if (PerlLIO_stat(SvPVX(GvSV(PL_curcop->cop_filegv)),&tmpstatbuf) < 0)
2310 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2311 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2312 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2313 Perl_croak(aTHX_ "Permission denied");
2315 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2316 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2317 (void)PerlIO_close(PL_rsfp);
2318 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2319 PerlIO_printf(PL_rsfp,
2320 "User %ld tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2321 (Filename of set-id script was %s, uid %ld gid %ld.)\n\nSincerely,\nperl\n",
2322 (long)PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2323 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
2324 SvPVX(GvSV(PL_curcop->cop_filegv)),
2325 (long)PL_statbuf.st_uid, (long)PL_statbuf.st_gid);
2326 (void)PerlProc_pclose(PL_rsfp);
2328 Perl_croak(aTHX_ "Permission denied\n");
2332 setreuid(PL_uid,PL_euid) < 0
2334 # if defined(HAS_SETRESUID)
2335 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2338 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2339 Perl_croak(aTHX_ "Can't reswap uid and euid");
2340 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2341 Perl_croak(aTHX_ "Permission denied\n");
2343 #endif /* HAS_SETREUID */
2344 #endif /* IAMSUID */
2346 if (!S_ISREG(PL_statbuf.st_mode))
2347 Perl_croak(aTHX_ "Permission denied");
2348 if (PL_statbuf.st_mode & S_IWOTH)
2349 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2350 PL_doswitches = FALSE; /* -s is insecure in suid */
2351 PL_curcop->cop_line++;
2352 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2353 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2354 Perl_croak(aTHX_ "No #! line");
2355 s = SvPV(PL_linestr,n_a)+2;
2357 while (!isSPACE(*s)) s++;
2358 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2359 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2360 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2361 Perl_croak(aTHX_ "Not a perl script");
2362 while (*s == ' ' || *s == '\t') s++;
2364 * #! arg must be what we saw above. They can invoke it by
2365 * mentioning suidperl explicitly, but they may not add any strange
2366 * arguments beyond what #! says if they do invoke suidperl that way.
2368 len = strlen(validarg);
2369 if (strEQ(validarg," PHOOEY ") ||
2370 strnNE(s,validarg,len) || !isSPACE(s[len]))
2371 Perl_croak(aTHX_ "Args must match #! line");
2374 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2375 PL_euid == PL_statbuf.st_uid)
2377 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2378 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2379 #endif /* IAMSUID */
2381 if (PL_euid) { /* oops, we're not the setuid root perl */
2382 (void)PerlIO_close(PL_rsfp);
2385 PerlProc_execv(Perl_form(aTHX_ "%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv);
2387 Perl_croak(aTHX_ "Can't do setuid\n");
2390 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2392 (void)setegid(PL_statbuf.st_gid);
2395 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2397 #ifdef HAS_SETRESGID
2398 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2400 PerlProc_setgid(PL_statbuf.st_gid);
2404 if (PerlProc_getegid() != PL_statbuf.st_gid)
2405 Perl_croak(aTHX_ "Can't do setegid!\n");
2407 if (PL_statbuf.st_mode & S_ISUID) {
2408 if (PL_statbuf.st_uid != PL_euid)
2410 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2413 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2415 #ifdef HAS_SETRESUID
2416 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2418 PerlProc_setuid(PL_statbuf.st_uid);
2422 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2423 Perl_croak(aTHX_ "Can't do seteuid!\n");
2425 else if (PL_uid) { /* oops, mustn't run as root */
2427 (void)seteuid((Uid_t)PL_uid);
2430 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2432 #ifdef HAS_SETRESUID
2433 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2435 PerlProc_setuid((Uid_t)PL_uid);
2439 if (PerlProc_geteuid() != PL_uid)
2440 Perl_croak(aTHX_ "Can't do seteuid!\n");
2443 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2444 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
2447 else if (PL_preprocess)
2448 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
2449 else if (fdscript >= 0)
2450 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
2452 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
2454 /* We absolutely must clear out any saved ids here, so we */
2455 /* exec the real perl, substituting fd script for scriptname. */
2456 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2457 PerlIO_rewind(PL_rsfp);
2458 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2459 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2460 if (!PL_origargv[which])
2461 Perl_croak(aTHX_ "Permission denied");
2462 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
2463 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
2464 #if defined(HAS_FCNTL) && defined(F_SETFD)
2465 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
2467 PerlProc_execv(Perl_form(aTHX_ "%s/perl%s", BIN_EXP, PL_patchlevel), PL_origargv);/* try again */
2468 Perl_croak(aTHX_ "Can't do setuid\n");
2469 #endif /* IAMSUID */
2471 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
2472 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
2474 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
2475 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
2477 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
2480 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2481 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2482 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
2483 /* not set-id, must be wrapped */
2489 S_find_beginning(pTHX)
2491 register char *s, *s2;
2493 /* skip forward in input to the real script? */
2496 while (PL_doextract) {
2497 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
2498 Perl_croak(aTHX_ "No Perl script found in input\n");
2499 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
2500 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
2501 PL_doextract = FALSE;
2502 while (*s && !(isSPACE (*s) || *s == '#')) s++;
2504 while (*s == ' ' || *s == '\t') s++;
2506 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
2507 if (strnEQ(s2-4,"perl",4))
2509 while (s = moreswitches(s)) ;
2511 if (PL_cddir && PerlDir_chdir(PL_cddir) < 0)
2512 Perl_croak(aTHX_ "Can't chdir to %s",PL_cddir);
2521 PL_uid = PerlProc_getuid();
2522 PL_euid = PerlProc_geteuid();
2523 PL_gid = PerlProc_getgid();
2524 PL_egid = PerlProc_getegid();
2526 PL_uid |= PL_gid << 16;
2527 PL_euid |= PL_egid << 16;
2529 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
2533 S_forbid_setid(pTHX_ char *s)
2535 if (PL_euid != PL_uid)
2536 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
2537 if (PL_egid != PL_gid)
2538 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
2542 Perl_init_debugger(pTHX)
2545 HV *ostash = PL_curstash;
2547 PL_curstash = PL_debstash;
2548 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
2549 AvREAL_off(PL_dbargs);
2550 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
2551 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
2552 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
2553 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
2554 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
2555 sv_setiv(PL_DBsingle, 0);
2556 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
2557 sv_setiv(PL_DBtrace, 0);
2558 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
2559 sv_setiv(PL_DBsignal, 0);
2560 PL_curstash = ostash;
2563 #ifndef STRESS_REALLOC
2564 #define REASONABLE(size) (size)
2566 #define REASONABLE(size) (1) /* unreasonable */
2570 Perl_init_stacks(pTHX)
2572 /* start with 128-item stack and 8K cxstack */
2573 PL_curstackinfo = new_stackinfo(REASONABLE(128),
2574 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
2575 PL_curstackinfo->si_type = PERLSI_MAIN;
2576 PL_curstack = PL_curstackinfo->si_stack;
2577 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
2579 PL_stack_base = AvARRAY(PL_curstack);
2580 PL_stack_sp = PL_stack_base;
2581 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
2583 New(50,PL_tmps_stack,REASONABLE(128),SV*);
2586 PL_tmps_max = REASONABLE(128);
2588 New(54,PL_markstack,REASONABLE(32),I32);
2589 PL_markstack_ptr = PL_markstack;
2590 PL_markstack_max = PL_markstack + REASONABLE(32);
2594 New(54,PL_scopestack,REASONABLE(32),I32);
2595 PL_scopestack_ix = 0;
2596 PL_scopestack_max = REASONABLE(32);
2598 New(54,PL_savestack,REASONABLE(128),ANY);
2599 PL_savestack_ix = 0;
2600 PL_savestack_max = REASONABLE(128);
2602 New(54,PL_retstack,REASONABLE(16),OP*);
2604 PL_retstack_max = REASONABLE(16);
2613 while (PL_curstackinfo->si_next)
2614 PL_curstackinfo = PL_curstackinfo->si_next;
2615 while (PL_curstackinfo) {
2616 PERL_SI *p = PL_curstackinfo->si_prev;
2617 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
2618 Safefree(PL_curstackinfo->si_cxstack);
2619 Safefree(PL_curstackinfo);
2620 PL_curstackinfo = p;
2622 Safefree(PL_tmps_stack);
2623 Safefree(PL_markstack);
2624 Safefree(PL_scopestack);
2625 Safefree(PL_savestack);
2626 Safefree(PL_retstack);
2628 Safefree(PL_debname);
2629 Safefree(PL_debdelim);
2634 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
2645 lex_start(PL_linestr);
2647 PL_subname = newSVpvn("main",4);
2651 S_init_predump_symbols(pTHX)
2658 sv_setpvn(get_sv("\"", TRUE), " ", 1);
2659 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
2660 GvMULTI_on(PL_stdingv);
2661 io = GvIOp(PL_stdingv);
2662 IoIFP(io) = PerlIO_stdin();
2663 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
2665 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
2667 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
2670 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
2672 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
2674 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
2676 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
2677 GvMULTI_on(PL_stderrgv);
2678 io = GvIOp(PL_stderrgv);
2679 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
2680 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
2682 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
2684 PL_statname = NEWSV(66,0); /* last filename we did stat on */
2687 PL_osname = savepv(OSNAME);
2691 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
2698 argc--,argv++; /* skip name of script */
2699 if (PL_doswitches) {
2700 for (; argc > 0 && **argv == '-'; argc--,argv++) {
2703 if (argv[0][1] == '-') {
2707 if (s = strchr(argv[0], '=')) {
2709 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
2712 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
2715 PL_toptarget = NEWSV(0,0);
2716 sv_upgrade(PL_toptarget, SVt_PVFM);
2717 sv_setpvn(PL_toptarget, "", 0);
2718 PL_bodytarget = NEWSV(0,0);
2719 sv_upgrade(PL_bodytarget, SVt_PVFM);
2720 sv_setpvn(PL_bodytarget, "", 0);
2721 PL_formtarget = PL_bodytarget;
2724 if (tmpgv = gv_fetchpv("0",TRUE, SVt_PV)) {
2725 sv_setpv(GvSV(tmpgv),PL_origfilename);
2726 magicname("0", "0", 1);
2728 if (tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))
2729 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
2730 if (PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV)) {
2731 GvMULTI_on(PL_argvgv);
2732 (void)gv_AVadd(PL_argvgv);
2733 av_clear(GvAVn(PL_argvgv));
2734 for (; argc > 0; argc--,argv++) {
2735 av_push(GvAVn(PL_argvgv),newSVpv(argv[0],0));
2738 if (PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV)) {
2740 GvMULTI_on(PL_envgv);
2741 hv = GvHVn(PL_envgv);
2742 hv_magic(hv, PL_envgv, 'E');
2743 #if !defined( VMS) && !defined(EPOC) /* VMS doesn't have environ array */
2744 /* Note that if the supplied env parameter is actually a copy
2745 of the global environ then it may now point to free'd memory
2746 if the environment has been modified since. To avoid this
2747 problem we treat env==NULL as meaning 'use the default'
2752 environ[0] = Nullch;
2753 for (; *env; env++) {
2754 if (!(s = strchr(*env,'=')))
2760 sv = newSVpv(s--,0);
2761 (void)hv_store(hv, *env, s - *env, sv, 0);
2763 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
2764 /* Sins of the RTL. See note in my_setenv(). */
2765 (void)PerlEnv_putenv(savepv(*env));
2769 #ifdef DYNAMIC_ENV_FETCH
2770 HvNAME(hv) = savepv(ENV_HV_NAME);
2774 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
2775 sv_setiv(GvSV(tmpgv), (IV)getpid());
2779 S_init_perllib(pTHX)
2784 s = PerlEnv_getenv("PERL5LIB");
2788 incpush(PerlEnv_getenv("PERLLIB"), FALSE);
2790 /* Treat PERL5?LIB as a possible search list logical name -- the
2791 * "natural" VMS idiom for a Unix path string. We allow each
2792 * element to be a set of |-separated directories for compatibility.
2796 if (my_trnlnm("PERL5LIB",buf,0))
2797 do { incpush(buf,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
2799 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE);
2803 /* Use the ~-expanded versions of APPLLIB (undocumented),
2804 ARCHLIB PRIVLIB SITEARCH and SITELIB
2807 incpush(APPLLIB_EXP, TRUE);
2811 incpush(ARCHLIB_EXP, FALSE);
2814 #define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
2817 incpush(PRIVLIB_EXP, TRUE);
2819 incpush(PRIVLIB_EXP, FALSE);
2823 incpush(SITEARCH_EXP, FALSE);
2827 incpush(SITELIB_EXP, TRUE);
2829 incpush(SITELIB_EXP, FALSE);
2832 #if defined(PERL_VENDORLIB_EXP)
2834 incpush(PERL_VENDORLIB_EXP, TRUE);
2836 incpush(PERL_VENDORLIB_EXP, FALSE);
2840 incpush(".", FALSE);
2844 # define PERLLIB_SEP ';'
2847 # define PERLLIB_SEP '|'
2849 # define PERLLIB_SEP ':'
2852 #ifndef PERLLIB_MANGLE
2853 # define PERLLIB_MANGLE(s,n) (s)
2857 S_incpush(pTHX_ char *p, int addsubdirs)
2859 SV *subdir = Nullsv;
2865 subdir = sv_newmortal();
2866 if (!PL_archpat_auto) {
2867 STRLEN len = (sizeof(ARCHNAME) + strlen(PL_patchlevel)
2868 + sizeof("//auto"));
2869 New(55, PL_archpat_auto, len, char);
2870 sprintf(PL_archpat_auto, "/%s/%s/auto", ARCHNAME, PL_patchlevel);
2872 for (len = sizeof(ARCHNAME) + 2;
2873 PL_archpat_auto[len] != '\0' && PL_archpat_auto[len] != '/'; len++)
2874 if (PL_archpat_auto[len] == '.') PL_archpat_auto[len] = '_';
2879 /* Break at all separators */
2881 SV *libdir = NEWSV(55,0);
2884 /* skip any consecutive separators */
2885 while ( *p == PERLLIB_SEP ) {
2886 /* Uncomment the next line for PATH semantics */
2887 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
2891 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
2892 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
2897 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
2898 p = Nullch; /* break out */
2902 * BEFORE pushing libdir onto @INC we may first push version- and
2903 * archname-specific sub-directories.
2906 struct stat tmpstatbuf;
2911 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
2913 while (unix[len-1] == '/') len--; /* Cosmetic */
2914 sv_usepvn(libdir,unix,len);
2917 PerlIO_printf(Perl_error_log,
2918 "Failed to unixify @INC element \"%s\"\n",
2921 /* .../archname/version if -d .../archname/version/auto */
2922 sv_setsv(subdir, libdir);
2923 sv_catpv(subdir, PL_archpat_auto);
2924 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2925 S_ISDIR(tmpstatbuf.st_mode))
2926 av_push(GvAVn(PL_incgv),
2927 newSVpvn(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2929 /* .../archname if -d .../archname/auto */
2930 sv_insert(subdir, SvCUR(libdir) + sizeof(ARCHNAME),
2931 strlen(PL_patchlevel) + 1, "", 0);
2932 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2933 S_ISDIR(tmpstatbuf.st_mode))
2934 av_push(GvAVn(PL_incgv),
2935 newSVpvn(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2938 /* finally push this lib directory on the end of @INC */
2939 av_push(GvAVn(PL_incgv), libdir);
2944 STATIC struct perl_thread *
2945 S_init_main_thread(pTHX)
2947 #if !defined(PERL_IMPLICIT_CONTEXT)
2948 struct perl_thread *thr;
2952 Newz(53, thr, 1, struct perl_thread);
2953 PL_curcop = &PL_compiling;
2954 thr->interp = PERL_GET_INTERP;
2955 thr->cvcache = newHV();
2956 thr->threadsv = newAV();
2957 /* thr->threadsvp is set when find_threadsv is called */
2958 thr->specific = newAV();
2959 thr->flags = THRf_R_JOINABLE;
2960 MUTEX_INIT(&thr->mutex);
2961 /* Handcraft thrsv similarly to mess_sv */
2962 New(53, PL_thrsv, 1, SV);
2963 Newz(53, xpv, 1, XPV);
2964 SvFLAGS(PL_thrsv) = SVt_PV;
2965 SvANY(PL_thrsv) = (void*)xpv;
2966 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
2967 SvPVX(PL_thrsv) = (char*)thr;
2968 SvCUR_set(PL_thrsv, sizeof(thr));
2969 SvLEN_set(PL_thrsv, sizeof(thr));
2970 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
2971 thr->oursv = PL_thrsv;
2972 PL_chopset = " \n-";
2975 MUTEX_LOCK(&PL_threads_mutex);
2980 MUTEX_UNLOCK(&PL_threads_mutex);
2982 #ifdef HAVE_THREAD_INTERN
2983 Perl_init_thread_intern(thr);
2986 #ifdef SET_THREAD_SELF
2987 SET_THREAD_SELF(thr);
2989 thr->self = pthread_self();
2990 #endif /* SET_THREAD_SELF */
2994 * These must come after the SET_THR because sv_setpvn does
2995 * SvTAINT and the taint fields require dTHR.
2997 PL_toptarget = NEWSV(0,0);
2998 sv_upgrade(PL_toptarget, SVt_PVFM);
2999 sv_setpvn(PL_toptarget, "", 0);
3000 PL_bodytarget = NEWSV(0,0);
3001 sv_upgrade(PL_bodytarget, SVt_PVFM);
3002 sv_setpvn(PL_bodytarget, "", 0);
3003 PL_formtarget = PL_bodytarget;
3004 thr->errsv = newSVpvn("", 0);
3005 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3008 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3009 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3010 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3011 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3012 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3014 PL_reginterp_cnt = 0;
3018 #endif /* USE_THREADS */
3021 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3025 line_t oldline = PL_curcop->cop_line;
3031 while (AvFILL(paramList) >= 0) {
3032 cv = (CV*)av_shift(paramList);
3034 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_call_list_body), cv);
3037 (void)SvPV(atsv, len);
3039 PL_curcop = &PL_compiling;
3040 PL_curcop->cop_line = oldline;
3041 if (paramList == PL_beginav)
3042 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3044 sv_catpv(atsv, "END failed--cleanup aborted");
3045 while (PL_scopestack_ix > oldscope)
3047 Perl_croak(aTHX_ "%s", SvPVX(atsv));
3054 /* my_exit() was called */
3055 while (PL_scopestack_ix > oldscope)
3058 PL_curstash = PL_defstash;
3059 if (PL_endav && !PL_minus_c)
3060 call_list(oldscope, PL_endav);
3061 PL_curcop = &PL_compiling;
3062 PL_curcop->cop_line = oldline;
3063 if (PL_statusvalue) {
3064 if (paramList == PL_beginav)
3065 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3067 Perl_croak(aTHX_ "END failed--cleanup aborted");
3073 PL_curcop = &PL_compiling;
3074 PL_curcop->cop_line = oldline;
3077 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3085 S_call_list_body(pTHX_ va_list args)
3088 CV *cv = va_arg(args, CV*);
3090 PUSHMARK(PL_stack_sp);
3091 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3096 Perl_my_exit(pTHX_ U32 status)
3100 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3101 thr, (unsigned long) status));
3110 STATUS_NATIVE_SET(status);
3117 Perl_my_failure_exit(pTHX)
3120 if (vaxc$errno & 1) {
3121 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3122 STATUS_NATIVE_SET(44);
3125 if (!vaxc$errno && errno) /* unlikely */
3126 STATUS_NATIVE_SET(44);
3128 STATUS_NATIVE_SET(vaxc$errno);
3133 STATUS_POSIX_SET(errno);
3135 exitstatus = STATUS_POSIX >> 8;
3136 if (exitstatus & 255)
3137 STATUS_POSIX_SET(exitstatus);
3139 STATUS_POSIX_SET(255);
3146 S_my_exit_jump(pTHX)
3149 register PERL_CONTEXT *cx;
3154 SvREFCNT_dec(PL_e_script);
3155 PL_e_script = Nullsv;
3158 POPSTACK_TO(PL_mainstack);
3159 if (cxstack_ix >= 0) {
3162 POPBLOCK(cx,PL_curpm);
3175 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3178 p = SvPVX(PL_e_script);
3179 nl = strchr(p, '\n');
3180 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3182 filter_del(read_e_script);
3185 sv_catpvn(buf_sv, p, nl-p);
3186 sv_chop(PL_e_script, nl);