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
18 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
23 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
24 char *getenv (char *); /* Usually in <stdlib.h> */
27 static I32 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen);
42 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
49 CPerlObj* perl_alloc(IPerlMem* ipM, IPerlEnv* ipE, IPerlStdIO* ipStd,
50 IPerlLIO* ipLIO, IPerlDir* ipD, IPerlSock* ipS, IPerlProc* ipP)
52 CPerlObj* pPerl = new(ipM) CPerlObj(ipM, ipE, ipStd, ipLIO, ipD, ipS, ipP);
62 PerlInterpreter *my_perl;
64 #if !defined(PERL_IMPLICIT_CONTEXT)
67 New(53, my_perl, 1, PerlInterpreter);
70 #endif /* PERL_OBJECT */
78 struct perl_thread *thr;
79 #endif /* FAKE_THREADS */
80 #endif /* USE_THREADS */
83 if (!(PL_curinterp = my_perl))
88 Zero(my_perl, 1, PerlInterpreter);
91 /* Init the real globals (and main thread)? */
96 #ifdef ALLOC_THREAD_KEY
99 if (pthread_key_create(&PL_thr_key, 0))
100 Perl_croak(aTHX_ "panic: pthread_key_create");
102 MUTEX_INIT(&PL_sv_mutex);
104 * Safe to use basic SV functions from now on (though
105 * not things like mortals or tainting yet).
107 MUTEX_INIT(&PL_eval_mutex);
108 COND_INIT(&PL_eval_cond);
109 MUTEX_INIT(&PL_threads_mutex);
110 COND_INIT(&PL_nthreads_cond);
111 #ifdef EMULATE_ATOMIC_REFCOUNTS
112 MUTEX_INIT(&PL_svref_mutex);
113 #endif /* EMULATE_ATOMIC_REFCOUNTS */
115 MUTEX_INIT(&PL_cred_mutex);
117 thr = init_main_thread();
118 #endif /* USE_THREADS */
120 PL_protect = FUNC_NAME_TO_PTR(Perl_default_protect); /* for exceptions */
122 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
124 PL_linestr = NEWSV(65,79);
125 sv_upgrade(PL_linestr,SVt_PVIV);
127 if (!SvREADONLY(&PL_sv_undef)) {
128 /* set read-only and try to insure than we wont see REFCNT==0
131 SvREADONLY_on(&PL_sv_undef);
132 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
134 sv_setpv(&PL_sv_no,PL_No);
136 SvREADONLY_on(&PL_sv_no);
137 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
139 sv_setpv(&PL_sv_yes,PL_Yes);
141 SvREADONLY_on(&PL_sv_yes);
142 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
147 /* PL_sighandlerp = sighandler; */
149 PL_sighandlerp = Perl_sighandler;
151 PL_pidstatus = newHV();
155 * There is no way we can refer to them from Perl so close them to save
156 * space. The other alternative would be to provide STDAUX and STDPRN
159 (void)fclose(stdaux);
160 (void)fclose(stdprn);
164 PL_nrs = newSVpvn("\n", 1);
165 PL_rs = SvREFCNT_inc(PL_nrs);
170 PL_perl_destruct_level = 1;
172 if (PL_perl_destruct_level > 0)
177 PL_lex_state = LEX_NOTPARSING;
183 SET_NUMERIC_STANDARD();
184 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
185 sprintf(PL_patchlevel, "%7.5f", (double) PERL_REVISION
186 + ((double) PERL_VERSION / (double) 1000)
187 + ((double) PERL_SUBVERSION / (double) 100000));
189 sprintf(PL_patchlevel, "%5.3f", (double) PERL_REVISION +
190 ((double) PERL_VERSION / (double) 1000));
193 #if defined(LOCAL_PATCH_COUNT)
194 PL_localpatches = local_patches; /* For possible -v */
197 PerlIO_init(); /* Hook to IO system */
199 PL_fdpid = newAV(); /* for remembering popen pids by fd */
200 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
203 New(51,PL_debname,128,char);
204 New(52,PL_debdelim,128,char);
214 int destruct_level; /* 0=none, 1=full, 2=full with checks */
220 #endif /* USE_THREADS */
222 #if !defined(PERL_OBJECT) && !defined(PERL_IMPLICIT_CONTEXT)
223 if (!(PL_curinterp = my_perl))
229 /* Pass 1 on any remaining threads: detach joinables, join zombies */
231 MUTEX_LOCK(&PL_threads_mutex);
232 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
233 "perl_destruct: waiting for %d threads...\n",
235 for (t = thr->next; t != thr; t = t->next) {
236 MUTEX_LOCK(&t->mutex);
237 switch (ThrSTATE(t)) {
240 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
241 "perl_destruct: joining zombie %p\n", t));
242 ThrSETSTATE(t, THRf_DEAD);
243 MUTEX_UNLOCK(&t->mutex);
246 * The SvREFCNT_dec below may take a long time (e.g. av
247 * may contain an object scalar whose destructor gets
248 * called) so we have to unlock threads_mutex and start
251 MUTEX_UNLOCK(&PL_threads_mutex);
253 SvREFCNT_dec((SV*)av);
254 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
255 "perl_destruct: joined zombie %p OK\n", t));
257 case THRf_R_JOINABLE:
258 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
259 "perl_destruct: detaching thread %p\n", t));
260 ThrSETSTATE(t, THRf_R_DETACHED);
262 * We unlock threads_mutex and t->mutex in the opposite order
263 * from which we locked them just so that DETACH won't
264 * deadlock if it panics. It's only a breach of good style
265 * not a bug since they are unlocks not locks.
267 MUTEX_UNLOCK(&PL_threads_mutex);
269 MUTEX_UNLOCK(&t->mutex);
272 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
273 "perl_destruct: ignoring %p (state %u)\n",
275 MUTEX_UNLOCK(&t->mutex);
276 /* fall through and out */
279 /* We leave the above "Pass 1" loop with threads_mutex still locked */
281 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
282 while (PL_nthreads > 1)
284 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
285 "perl_destruct: final wait for %d threads\n",
287 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
289 /* At this point, we're the last thread */
290 MUTEX_UNLOCK(&PL_threads_mutex);
291 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "perl_destruct: armageddon has arrived\n"));
292 MUTEX_DESTROY(&PL_threads_mutex);
293 COND_DESTROY(&PL_nthreads_cond);
294 #endif /* !defined(FAKE_THREADS) */
295 #endif /* USE_THREADS */
297 destruct_level = PL_perl_destruct_level;
301 if (s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL")) {
303 if (destruct_level < i)
312 /* We must account for everything. */
314 /* Destroy the main CV and syntax tree */
316 PL_curpad = AvARRAY(PL_comppad);
317 op_free(PL_main_root);
318 PL_main_root = Nullop;
320 PL_curcop = &PL_compiling;
321 PL_main_start = Nullop;
322 SvREFCNT_dec(PL_main_cv);
326 if (PL_sv_objcount) {
328 * Try to destruct global references. We do this first so that the
329 * destructors and destructees still exist. Some sv's might remain.
330 * Non-referenced objects are on their own.
335 /* unhook hooks which will soon be, or use, destroyed data */
336 SvREFCNT_dec(PL_warnhook);
337 PL_warnhook = Nullsv;
338 SvREFCNT_dec(PL_diehook);
340 SvREFCNT_dec(PL_parsehook);
341 PL_parsehook = Nullsv;
343 /* call exit list functions */
344 while (PL_exitlistlen-- > 0)
345 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
347 Safefree(PL_exitlist);
349 if (destruct_level == 0){
351 DEBUG_P(debprofdump());
353 /* The exit() function will do everything that needs doing. */
357 /* loosen bonds of global variables */
360 (void)PerlIO_close(PL_rsfp);
364 /* Filters for program text */
365 SvREFCNT_dec(PL_rsfp_filters);
366 PL_rsfp_filters = Nullav;
369 PL_preprocess = FALSE;
375 PL_doswitches = FALSE;
376 PL_dowarn = G_WARN_OFF;
377 PL_doextract = FALSE;
378 PL_sawampersand = FALSE; /* must save all match strings */
379 PL_sawstudy = FALSE; /* do fbm_instr on all strings */
383 Safefree(PL_inplace);
387 SvREFCNT_dec(PL_e_script);
388 PL_e_script = Nullsv;
391 /* magical thingies */
393 Safefree(PL_ofs); /* $, */
396 Safefree(PL_ors); /* $\ */
399 SvREFCNT_dec(PL_rs); /* $/ */
402 SvREFCNT_dec(PL_nrs); /* $/ helper */
405 PL_multiline = 0; /* $* */
407 SvREFCNT_dec(PL_statname);
408 PL_statname = Nullsv;
411 /* defgv, aka *_ should be taken care of elsewhere */
413 /* clean up after study() */
414 SvREFCNT_dec(PL_lastscream);
415 PL_lastscream = Nullsv;
416 Safefree(PL_screamfirst);
418 Safefree(PL_screamnext);
421 /* startup and shutdown function lists */
422 SvREFCNT_dec(PL_beginav);
423 SvREFCNT_dec(PL_endav);
424 SvREFCNT_dec(PL_initav);
429 /* shortcuts just get cleared */
436 PL_argvoutgv = Nullgv;
438 PL_last_in_gv = Nullgv;
441 /* reset so print() ends up where we expect */
444 /* Prepare to destruct main symbol table. */
451 if (destruct_level >= 2) {
452 if (PL_scopestack_ix != 0)
453 Perl_warn(aTHX_ "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
454 (long)PL_scopestack_ix);
455 if (PL_savestack_ix != 0)
456 Perl_warn(aTHX_ "Unbalanced saves: %ld more saves than restores\n",
457 (long)PL_savestack_ix);
458 if (PL_tmps_floor != -1)
459 Perl_warn(aTHX_ "Unbalanced tmps: %ld more allocs than frees\n",
460 (long)PL_tmps_floor + 1);
461 if (cxstack_ix != -1)
462 Perl_warn(aTHX_ "Unbalanced context: %ld more PUSHes than POPs\n",
463 (long)cxstack_ix + 1);
466 /* Now absolutely destruct everything, somehow or other, loops or no. */
468 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
469 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
470 last_sv_count = PL_sv_count;
473 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
474 SvFLAGS(PL_strtab) |= SVt_PVHV;
476 /* Destruct the global string table. */
478 /* Yell and reset the HeVAL() slots that are still holding refcounts,
479 * so that sv_free() won't fail on them.
487 max = HvMAX(PL_strtab);
488 array = HvARRAY(PL_strtab);
492 Perl_warn(aTHX_ "Unbalanced string table refcount: (%d) for \"%s\"",
493 HeVAL(hent) - Nullsv, HeKEY(hent));
494 HeVAL(hent) = Nullsv;
504 SvREFCNT_dec(PL_strtab);
506 if (PL_sv_count != 0)
507 Perl_warn(aTHX_ "Scalars leaked: %ld\n", (long)PL_sv_count);
511 /* No SVs have survived, need to clean out */
513 PL_pidstatus = Nullhv;
514 Safefree(PL_origfilename);
515 Safefree(PL_archpat_auto);
516 Safefree(PL_reg_start_tmp);
518 Safefree(PL_reg_curpm);
519 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
520 Safefree(PL_op_mask);
522 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
524 DEBUG_P(debprofdump());
526 MUTEX_DESTROY(&PL_strtab_mutex);
527 MUTEX_DESTROY(&PL_sv_mutex);
528 MUTEX_DESTROY(&PL_eval_mutex);
529 MUTEX_DESTROY(&PL_cred_mutex);
530 COND_DESTROY(&PL_eval_cond);
531 #ifdef EMULATE_ATOMIC_REFCOUNTS
532 MUTEX_DESTROY(&PL_svref_mutex);
533 #endif /* EMULATE_ATOMIC_REFCOUNTS */
535 /* As the penultimate thing, free the non-arena SV for thrsv */
536 Safefree(SvPVX(PL_thrsv));
537 Safefree(SvANY(PL_thrsv));
540 #endif /* USE_THREADS */
542 /* As the absolutely last thing, free the non-arena SV for mess() */
545 /* it could have accumulated taint magic */
546 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
549 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
550 moremagic = mg->mg_moremagic;
551 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
552 Safefree(mg->mg_ptr);
556 /* we know that type >= SVt_PV */
557 SvOOK_off(PL_mess_sv);
558 Safefree(SvPVX(PL_mess_sv));
559 Safefree(SvANY(PL_mess_sv));
560 Safefree(PL_mess_sv);
571 # if !defined(PERL_IMPLICIT_CONTEXT)
572 if (!(PL_curinterp = my_perl))
580 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
582 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
583 PL_exitlist[PL_exitlistlen].fn = fn;
584 PL_exitlist[PL_exitlistlen].ptr = ptr;
589 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
598 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
601 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
602 setuid perl scripts securely.\n");
606 #if !defined(PERL_OBJECT) && !defined(PERL_IMPLICIT_CONTEXT)
607 if (!(PL_curinterp = my_perl))
611 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
612 _dyld_lookup_and_bind
613 ("__environ", (unsigned long *) &environ_pointer, NULL);
618 #ifndef VMS /* VMS doesn't have environ array */
619 PL_origenviron = environ;
624 /* Come here if running an undumped a.out. */
626 PL_origfilename = savepv(argv[0]);
627 PL_do_undump = FALSE;
628 cxstack_ix = -1; /* start label stack again */
630 init_postdump_symbols(argc,argv,env);
635 PL_curpad = AvARRAY(PL_comppad);
636 op_free(PL_main_root);
637 PL_main_root = Nullop;
639 PL_main_start = Nullop;
640 SvREFCNT_dec(PL_main_cv);
644 oldscope = PL_scopestack_ix;
645 PL_dowarn = G_WARN_OFF;
647 CALLPROTECT(aTHX_ &ret, FUNC_NAME_TO_PTR(S_parse_body), env, xsinit);
655 /* my_exit() was called */
656 while (PL_scopestack_ix > oldscope)
659 PL_curstash = PL_defstash;
661 call_list(oldscope, PL_endav);
662 return STATUS_NATIVE_EXPORT;
664 PerlIO_printf(PerlIO_stderr(), "panic: top_env\n");
671 S_parse_body(pTHX_ va_list args)
674 int argc = PL_origargc;
675 char **argv = PL_origargv;
676 char **env = va_arg(args, char**);
677 char *scriptname = NULL;
679 VOL bool dosearch = FALSE;
685 XSINIT_t xsinit = va_arg(args, XSINIT_t);
687 sv_setpvn(PL_linestr,"",0);
688 sv = newSVpvn("",0); /* first used for -I flags */
692 for (argc--,argv++; argc > 0; argc--,argv++) {
693 if (argv[0][0] != '-' || !argv[0][1])
697 validarg = " PHOOEY ";
704 #ifndef PERL_STRICT_CR
728 if (s = moreswitches(s))
738 if (PL_euid != PL_uid || PL_egid != PL_gid)
739 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
741 PL_e_script = newSVpvn("",0);
742 filter_add(read_e_script, NULL);
745 sv_catpv(PL_e_script, s);
747 sv_catpv(PL_e_script, argv[1]);
751 Perl_croak(aTHX_ "No code specified for -e");
752 sv_catpv(PL_e_script, "\n");
755 case 'I': /* -I handled both here and in moreswitches() */
757 if (!*++s && (s=argv[1]) != Nullch) {
760 while (s && isSPACE(*s))
764 for (e = s; *e && !isSPACE(*e); e++) ;
771 } /* XXX else croak? */
775 PL_preprocess = TRUE;
785 PL_preambleav = newAV();
786 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
788 PL_Sv = newSVpv("print myconfig();",0);
790 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
792 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
794 #if defined(DEBUGGING) || defined(MULTIPLICITY)
795 sv_catpv(PL_Sv,"\" Compile-time options:");
797 sv_catpv(PL_Sv," DEBUGGING");
800 sv_catpv(PL_Sv," MULTIPLICITY");
802 sv_catpv(PL_Sv,"\\n\",");
804 #if defined(LOCAL_PATCH_COUNT)
805 if (LOCAL_PATCH_COUNT > 0) {
807 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
808 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
809 if (PL_localpatches[i])
810 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
814 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
817 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
819 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
824 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
825 print \" \\%ENV:\\n @env\\n\" if @env; \
826 print \" \\@INC:\\n @INC\\n\";");
829 PL_Sv = newSVpv("config_vars(qw(",0);
830 sv_catpv(PL_Sv, ++s);
831 sv_catpv(PL_Sv, "))");
834 av_push(PL_preambleav, PL_Sv);
835 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
841 PL_cddir = savepv(s);
846 if (!*++s || isSPACE(*s)) {
850 /* catch use of gnu style long options */
851 if (strEQ(s, "version")) {
855 if (strEQ(s, "help")) {
862 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
868 #ifndef SECURE_INTERNAL_GETENV
871 (s = PerlEnv_getenv("PERL5OPT"))) {
874 if (*s == '-' && *(s+1) == 'T')
887 if (!strchr("DIMUdmw", *s))
888 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
895 scriptname = argv[0];
898 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
900 else if (scriptname == Nullch) {
902 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
910 open_script(scriptname,dosearch,sv,&fdscript);
912 validate_suid(validarg, scriptname,fdscript);
917 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
918 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
919 CvUNIQUE_on(PL_compcv);
921 PL_comppad = newAV();
922 av_push(PL_comppad, Nullsv);
923 PL_curpad = AvARRAY(PL_comppad);
924 PL_comppad_name = newAV();
925 PL_comppad_name_fill = 0;
926 PL_min_intro_pending = 0;
929 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
930 PL_curpad[0] = (SV*)newAV();
931 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
932 CvOWNER(PL_compcv) = 0;
933 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
934 MUTEX_INIT(CvMUTEXP(PL_compcv));
935 #endif /* USE_THREADS */
937 comppadlist = newAV();
938 AvREAL_off(comppadlist);
939 av_store(comppadlist, 0, (SV*)PL_comppad_name);
940 av_store(comppadlist, 1, (SV*)PL_comppad);
941 CvPADLIST(PL_compcv) = comppadlist;
943 boot_core_UNIVERSAL();
946 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
947 #if defined(VMS) || defined(WIN32) || defined(DJGPP)
948 init_os_extras(aTHX);
951 init_predump_symbols();
952 /* init_postdump_symbols not currently designed to be called */
953 /* more than once (ENV isn't cleared first, for example) */
954 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
956 init_postdump_symbols(argc,argv,env);
960 /* now parse the script */
962 SETERRNO(0,SS$_NORMAL);
964 if (yyparse() || PL_error_count) {
966 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
968 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
972 PL_curcop->cop_line = 0;
973 PL_curstash = PL_defstash;
974 PL_preprocess = FALSE;
976 SvREFCNT_dec(PL_e_script);
977 PL_e_script = Nullsv;
980 /* now that script is parsed, we can modify record separator */
982 PL_rs = SvREFCNT_inc(PL_nrs);
983 sv_setsv(get_sv("/", TRUE), PL_rs);
987 if (ckWARN(WARN_ONCE))
988 gv_check(PL_defstash);
994 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
995 dump_mstats("after compilation:");
1013 #if !defined(PERL_OBJECT) && !defined(PERL_IMPLICIT_CONTEXT)
1014 if (!(PL_curinterp = my_perl))
1018 oldscope = PL_scopestack_ix;
1021 CALLPROTECT(aTHX_ &ret, FUNC_NAME_TO_PTR(S_run_body), oldscope);
1024 cxstack_ix = -1; /* start context stack again */
1026 case 0: /* normal completion */
1027 case 2: /* my_exit() */
1028 while (PL_scopestack_ix > oldscope)
1031 PL_curstash = PL_defstash;
1033 call_list(oldscope, PL_endav);
1035 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1036 dump_mstats("after execution: ");
1038 return STATUS_NATIVE_EXPORT;
1041 POPSTACK_TO(PL_mainstack);
1044 PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
1054 S_run_body(pTHX_ va_list args)
1057 I32 oldscope = va_arg(args, I32);
1059 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1060 PL_sawampersand ? "Enabling" : "Omitting"));
1062 if (!PL_restartop) {
1063 DEBUG_x(dump_all());
1064 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1065 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%lx\n",
1066 (unsigned long) thr));
1069 PerlIO_printf(PerlIO_stderr(), "%s syntax OK\n", PL_origfilename);
1072 if (PERLDB_SINGLE && PL_DBsingle)
1073 sv_setiv(PL_DBsingle, 1);
1075 call_list(oldscope, PL_initav);
1081 PL_op = PL_restartop;
1085 else if (PL_main_start) {
1086 CvDEPTH(PL_main_cv) = 1;
1087 PL_op = PL_main_start;
1097 Perl_get_sv(pTHX_ const char *name, I32 create)
1101 if (name[1] == '\0' && !isALPHA(name[0])) {
1102 PADOFFSET tmp = find_threadsv(name);
1103 if (tmp != NOT_IN_PAD) {
1105 return THREADSV(tmp);
1108 #endif /* USE_THREADS */
1109 gv = gv_fetchpv(name, create, SVt_PV);
1116 Perl_get_av(pTHX_ const char *name, I32 create)
1118 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1127 Perl_get_hv(pTHX_ const char *name, I32 create)
1129 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1138 Perl_get_cv(pTHX_ const char *name, I32 create)
1140 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1141 /* XXX unsafe for threads if eval_owner isn't held */
1142 /* XXX this is probably not what they think they're getting.
1143 * It has the same effect as "sub name;", i.e. just a forward
1145 if (create && !GvCVu(gv))
1146 return newSUB(start_subparse(FALSE, 0),
1147 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1155 /* Be sure to refetch the stack pointer after calling these routines. */
1158 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1160 /* See G_* flags in cop.h */
1161 /* null terminated arg list */
1168 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1173 return call_pv(sub_name, flags);
1177 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1178 /* name of the subroutine */
1179 /* See G_* flags in cop.h */
1181 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1185 Perl_call_method(pTHX_ const char *methname, I32 flags)
1186 /* name of the subroutine */
1187 /* See G_* flags in cop.h */
1193 XPUSHs(sv_2mortal(newSVpv(methname,0)));
1198 return call_sv(*PL_stack_sp--, flags);
1201 /* May be called with any of a CV, a GV, or an SV containing the name. */
1203 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1205 /* See G_* flags in cop.h */
1208 LOGOP myop; /* fake syntax tree node */
1212 bool oldcatch = CATCH_GET;
1216 if (flags & G_DISCARD) {
1221 Zero(&myop, 1, LOGOP);
1222 myop.op_next = Nullop;
1223 if (!(flags & G_NOARGS))
1224 myop.op_flags |= OPf_STACKED;
1225 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1226 (flags & G_ARRAY) ? OPf_WANT_LIST :
1231 EXTEND(PL_stack_sp, 1);
1232 *++PL_stack_sp = sv;
1234 oldscope = PL_scopestack_ix;
1236 if (PERLDB_SUB && PL_curstash != PL_debstash
1237 /* Handle first BEGIN of -d. */
1238 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1239 /* Try harder, since this may have been a sighandler, thus
1240 * curstash may be meaningless. */
1241 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1242 && !(flags & G_NODEBUG))
1243 PL_op->op_private |= OPpENTERSUB_DB;
1245 if (!(flags & G_EVAL)) {
1247 call_xbody((OP*)&myop, FALSE);
1248 retval = PL_stack_sp - (PL_stack_base + oldmark);
1252 cLOGOP->op_other = PL_op;
1254 /* we're trying to emulate pp_entertry() here */
1256 register PERL_CONTEXT *cx;
1257 I32 gimme = GIMME_V;
1262 push_return(PL_op->op_next);
1263 PUSHBLOCK(cx, CXt_EVAL, PL_stack_sp);
1265 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1267 PL_in_eval = EVAL_INEVAL;
1268 if (flags & G_KEEPERR)
1269 PL_in_eval |= EVAL_KEEPERR;
1276 CALLPROTECT(aTHX_ &ret, FUNC_NAME_TO_PTR(S_call_body), (OP*)&myop, FALSE);
1279 retval = PL_stack_sp - (PL_stack_base + oldmark);
1280 if (!(flags & G_KEEPERR))
1287 /* my_exit() was called */
1288 PL_curstash = PL_defstash;
1291 Perl_croak(aTHX_ "Callback called exit");
1296 PL_op = PL_restartop;
1300 PL_stack_sp = PL_stack_base + oldmark;
1301 if (flags & G_ARRAY)
1305 *++PL_stack_sp = &PL_sv_undef;
1310 if (PL_scopestack_ix > oldscope) {
1314 register PERL_CONTEXT *cx;
1325 if (flags & G_DISCARD) {
1326 PL_stack_sp = PL_stack_base + oldmark;
1336 S_call_body(pTHX_ va_list args)
1338 OP *myop = va_arg(args, OP*);
1339 int is_eval = va_arg(args, int);
1341 call_xbody(myop, is_eval);
1346 S_call_xbody(pTHX_ OP *myop, int is_eval)
1350 if (PL_op == myop) {
1352 PL_op = Perl_pp_entereval(aTHX);
1354 PL_op = Perl_pp_entersub(aTHX);
1360 /* Eval a string. The G_EVAL flag is always assumed. */
1363 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1365 /* See G_* flags in cop.h */
1368 UNOP myop; /* fake syntax tree node */
1369 I32 oldmark = SP - PL_stack_base;
1375 if (flags & G_DISCARD) {
1382 Zero(PL_op, 1, UNOP);
1383 EXTEND(PL_stack_sp, 1);
1384 *++PL_stack_sp = sv;
1385 oldscope = PL_scopestack_ix;
1387 if (!(flags & G_NOARGS))
1388 myop.op_flags = OPf_STACKED;
1389 myop.op_next = Nullop;
1390 myop.op_type = OP_ENTEREVAL;
1391 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1392 (flags & G_ARRAY) ? OPf_WANT_LIST :
1394 if (flags & G_KEEPERR)
1395 myop.op_flags |= OPf_SPECIAL;
1398 CALLPROTECT(aTHX_ &ret, FUNC_NAME_TO_PTR(S_call_body), (OP*)&myop, TRUE);
1401 retval = PL_stack_sp - (PL_stack_base + oldmark);
1402 if (!(flags & G_KEEPERR))
1409 /* my_exit() was called */
1410 PL_curstash = PL_defstash;
1413 Perl_croak(aTHX_ "Callback called exit");
1418 PL_op = PL_restartop;
1422 PL_stack_sp = PL_stack_base + oldmark;
1423 if (flags & G_ARRAY)
1427 *++PL_stack_sp = &PL_sv_undef;
1432 if (flags & G_DISCARD) {
1433 PL_stack_sp = PL_stack_base + oldmark;
1443 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1446 SV* sv = newSVpv(p, 0);
1449 eval_sv(sv, G_SCALAR);
1456 if (croak_on_error && SvTRUE(ERRSV)) {
1458 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1464 /* Require a module. */
1467 Perl_require_pv(pTHX_ const char *pv)
1471 PUSHSTACKi(PERLSI_REQUIRE);
1473 sv = sv_newmortal();
1474 sv_setpv(sv, "require '");
1477 eval_sv(sv, G_DISCARD);
1483 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
1487 if (gv = gv_fetchpv(sym,TRUE, SVt_PV))
1488 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1492 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
1494 /* This message really ought to be max 23 lines.
1495 * Removed -h because the user already knows that opton. Others? */
1497 static char *usage_msg[] = {
1498 "-0[octal] specify record separator (\\0, if no argument)",
1499 "-a autosplit mode with -n or -p (splits $_ into @F)",
1500 "-c check syntax only (runs BEGIN and END blocks)",
1501 "-d[:debugger] run program under debugger",
1502 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1503 "-e 'command' one line of program (several -e's allowed, omit programfile)",
1504 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
1505 "-i[extension] edit <> files in place (makes backup if extension supplied)",
1506 "-Idirectory specify @INC/#include directory (several -I's allowed)",
1507 "-l[octal] enable line ending processing, specifies line terminator",
1508 "-[mM][-]module execute `use/no module...' before executing program",
1509 "-n assume 'while (<>) { ... }' loop around program",
1510 "-p assume loop like -n but print line also, like sed",
1511 "-P run program through C preprocessor before compilation",
1512 "-s enable rudimentary parsing for switches after programfile",
1513 "-S look for programfile using PATH environment variable",
1514 "-T enable tainting checks",
1515 "-u dump core after parsing program",
1516 "-U allow unsafe operations",
1517 "-v print version, subversion (includes VERY IMPORTANT perl info)",
1518 "-V[:variable] print configuration summary (or a single Config.pm variable)",
1519 "-w enable many useful warnings (RECOMMENDED)",
1520 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
1524 char **p = usage_msg;
1526 printf("\nUsage: %s [switches] [--] [programfile] [arguments]", name);
1528 printf("\n %s", *p++);
1531 /* This routine handles any switches that can be given during run */
1534 Perl_moreswitches(pTHX_ char *s)
1543 rschar = scan_oct(s, 4, &numlen);
1544 SvREFCNT_dec(PL_nrs);
1545 if (rschar & ~((U8)~0))
1546 PL_nrs = &PL_sv_undef;
1547 else if (!rschar && numlen >= 2)
1548 PL_nrs = newSVpvn("", 0);
1551 PL_nrs = newSVpvn(&ch, 1);
1557 PL_splitstr = savepv(s + 1);
1571 if (*s == ':' || *s == '=') {
1572 my_setenv("PERL5DB", Perl_form(aTHX_ "use Devel::%s;", ++s));
1576 PL_perldb = PERLDB_ALL;
1583 if (isALPHA(s[1])) {
1584 static char debopts[] = "psltocPmfrxuLHXDS";
1587 for (s++; *s && (d = strchr(debopts,*s)); s++)
1588 PL_debug |= 1 << (d - debopts);
1591 PL_debug = atoi(s+1);
1592 for (s++; isDIGIT(*s); s++) ;
1594 PL_debug |= 0x80000000;
1596 Perl_warn(aTHX_ "Recompile perl with -DDEBUGGING to use -D switch\n");
1597 for (s++; isALNUM(*s); s++) ;
1602 usage(PL_origargv[0]);
1606 Safefree(PL_inplace);
1607 PL_inplace = savepv(s+1);
1609 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
1612 if (*s == '-') /* Additional switches on #! line. */
1616 case 'I': /* -I handled both here and in parse_perl() */
1619 while (*s && isSPACE(*s))
1623 for (e = s; *e && !isSPACE(*e); e++) ;
1624 p = savepvn(s, e-s);
1630 Perl_croak(aTHX_ "No space allowed after -I");
1638 PL_ors = savepv("\n");
1640 *PL_ors = scan_oct(s, 3 + (*s == '0'), &numlen);
1645 if (RsPARA(PL_nrs)) {
1650 PL_ors = SvPV(PL_nrs, PL_orslen);
1651 PL_ors = savepvn(PL_ors, PL_orslen);
1655 forbid_setid("-M"); /* XXX ? */
1658 forbid_setid("-m"); /* XXX ? */
1663 /* -M-foo == 'no foo' */
1664 if (*s == '-') { use = "no "; ++s; }
1665 sv = newSVpv(use,0);
1667 /* We allow -M'Module qw(Foo Bar)' */
1668 while(isALNUM(*s) || *s==':') ++s;
1670 sv_catpv(sv, start);
1671 if (*(start-1) == 'm') {
1673 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
1674 sv_catpv( sv, " ()");
1677 sv_catpvn(sv, start, s-start);
1678 sv_catpv(sv, " split(/,/,q{");
1683 if (PL_preambleav == NULL)
1684 PL_preambleav = newAV();
1685 av_push(PL_preambleav, sv);
1688 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1700 PL_doswitches = TRUE;
1705 Perl_croak(aTHX_ "Too late for \"-T\" option");
1709 PL_do_undump = TRUE;
1717 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
1718 printf("\nThis is perl, version %d.%03d_%02d built for %s",
1719 PERL_REVISION, PERL_VERSION, PERL_SUBVERSION, ARCHNAME);
1721 printf("\nThis is perl, version %s built for %s",
1722 PL_patchlevel, ARCHNAME);
1724 #if defined(LOCAL_PATCH_COUNT)
1725 if (LOCAL_PATCH_COUNT > 0)
1726 printf("\n(with %d registered patch%s, see perl -V for more detail)",
1727 LOCAL_PATCH_COUNT, (LOCAL_PATCH_COUNT!=1) ? "es" : "");
1730 printf("\n\nCopyright 1987-1999, Larry Wall\n");
1732 printf("\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
1735 printf("djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n");
1736 printf("djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
1739 printf("\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
1740 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
1743 printf("atariST series port, ++jrb bammi@cadence.com\n");
1746 printf("BeOS port Copyright Tom Spindler, 1997-1999\n");
1749 printf("MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
1752 printf("MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
1755 printf("Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
1758 printf("VM/ESA port by Neale Ferguson, 1998-1999\n");
1761 printf("BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
1764 printf("MiNT port by Guido Flohr, 1997-1999\n");
1766 #ifdef BINARY_BUILD_NOTICE
1767 BINARY_BUILD_NOTICE;
1770 Perl may be copied only under the terms of either the Artistic License or the\n\
1771 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
1772 Complete documentation for Perl, including FAQ lists, should be found on\n\
1773 this system using `man perl' or `perldoc perl'. If you have access to the\n\
1774 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
1777 if (! (PL_dowarn & G_WARN_ALL_MASK))
1778 PL_dowarn |= G_WARN_ON;
1782 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
1783 PL_compiling.cop_warnings = WARN_ALL ;
1787 PL_dowarn = G_WARN_ALL_OFF;
1788 PL_compiling.cop_warnings = WARN_NONE ;
1793 if (s[1] == '-') /* Additional switches on #! line. */
1798 #if defined(WIN32) || !defined(PERL_STRICT_CR)
1804 #ifdef ALTERNATE_SHEBANG
1805 case 'S': /* OS/2 needs -S on "extproc" line. */
1813 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
1818 /* compliments of Tom Christiansen */
1820 /* unexec() can be found in the Gnu emacs distribution */
1821 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
1824 Perl_my_unexec(pTHX)
1832 prog = newSVpv(BIN_EXP, 0);
1833 sv_catpv(prog, "/perl");
1834 file = newSVpv(PL_origfilename, 0);
1835 sv_catpv(file, ".perldump");
1837 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
1838 /* unexec prints msg to stderr in case of failure */
1839 PerlProc_exit(status);
1842 # include <lib$routines.h>
1843 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
1845 ABORT(); /* for use with undump */
1850 /* initialize curinterp */
1855 #ifdef PERL_OBJECT /* XXX kludge */
1858 PL_chopset = " \n-"; \
1859 PL_copline = NOLINE; \
1860 PL_curcop = &PL_compiling;\
1861 PL_curcopdb = NULL; \
1864 PL_dumpindent = 4; \
1865 PL_laststatval = -1; \
1866 PL_laststype = OP_STAT; \
1867 PL_maxscream = -1; \
1868 PL_maxsysfd = MAXSYSFD; \
1869 PL_statname = Nullsv; \
1870 PL_tmps_floor = -1; \
1872 PL_op_mask = NULL; \
1874 PL_laststatval = -1; \
1875 PL_laststype = OP_STAT; \
1876 PL_mess_sv = Nullsv; \
1877 PL_splitstr = " "; \
1878 PL_generation = 100; \
1879 PL_exitlist = NULL; \
1880 PL_exitlistlen = 0; \
1882 PL_in_clean_objs = FALSE; \
1883 PL_in_clean_all = FALSE; \
1884 PL_profiledata = NULL; \
1886 PL_rsfp_filters = Nullav; \
1891 # ifdef MULTIPLICITY
1892 # define PERLVAR(var,type)
1893 # if defined(PERL_IMPLICIT_CONTEXT)
1894 # define PERLVARI(var,type,init) my_perl->var = init;
1895 # define PERLVARIC(var,type,init) my_perl->var = init;
1897 # define PERLVARI(var,type,init) PL_curinterp->var = init;
1898 # define PERLVARIC(var,type,init) PL_curinterp->var = init;
1900 # include "intrpvar.h"
1901 # ifndef USE_THREADS
1902 # include "thrdvar.h"
1908 # define PERLVAR(var,type)
1909 # define PERLVARI(var,type,init) PL_##var = init;
1910 # define PERLVARIC(var,type,init) PL_##var = init;
1911 # include "intrpvar.h"
1912 # ifndef USE_THREADS
1913 # include "thrdvar.h"
1924 S_init_main_stash(pTHX)
1929 /* Note that strtab is a rather special HV. Assumptions are made
1930 about not iterating on it, and not adding tie magic to it.
1931 It is properly deallocated in perl_destruct() */
1932 PL_strtab = newHV();
1934 MUTEX_INIT(&PL_strtab_mutex);
1936 HvSHAREKEYS_off(PL_strtab); /* mandatory */
1937 hv_ksplit(PL_strtab, 512);
1939 PL_curstash = PL_defstash = newHV();
1940 PL_curstname = newSVpvn("main",4);
1941 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
1942 SvREFCNT_dec(GvHV(gv));
1943 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
1945 HvNAME(PL_defstash) = savepv("main");
1946 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
1947 GvMULTI_on(PL_incgv);
1948 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
1949 GvMULTI_on(PL_hintgv);
1950 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
1951 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
1952 GvMULTI_on(PL_errgv);
1953 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
1954 GvMULTI_on(PL_replgv);
1955 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
1956 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
1957 sv_setpvn(ERRSV, "", 0);
1958 PL_curstash = PL_defstash;
1959 PL_compiling.cop_stash = PL_defstash;
1960 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
1961 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
1962 /* We must init $/ before switches are processed. */
1963 sv_setpvn(get_sv("/", TRUE), "\n", 1);
1967 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
1975 PL_origfilename = savepv("-e");
1978 /* if find_script() returns, it returns a malloc()-ed value */
1979 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
1981 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
1982 char *s = scriptname + 8;
1983 *fdscript = atoi(s);
1987 scriptname = savepv(s + 1);
1988 Safefree(PL_origfilename);
1989 PL_origfilename = scriptname;
1994 PL_curcop->cop_filegv = gv_fetchfile(PL_origfilename);
1995 if (strEQ(PL_origfilename,"-"))
1997 if (*fdscript >= 0) {
1998 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
1999 #if defined(HAS_FCNTL) && defined(F_SETFD)
2001 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2004 else if (PL_preprocess) {
2005 char *cpp_cfg = CPPSTDIN;
2006 SV *cpp = newSVpvn("",0);
2007 SV *cmd = NEWSV(0,0);
2009 if (strEQ(cpp_cfg, "cppstdin"))
2010 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2011 sv_catpv(cpp, cpp_cfg);
2014 sv_catpv(sv,PRIVLIB_EXP);
2017 Perl_sv_setpvf(aTHX_ cmd, "\
2018 sed %s -e \"/^[^#]/b\" \
2019 -e \"/^#[ ]*include[ ]/b\" \
2020 -e \"/^#[ ]*define[ ]/b\" \
2021 -e \"/^#[ ]*if[ ]/b\" \
2022 -e \"/^#[ ]*ifdef[ ]/b\" \
2023 -e \"/^#[ ]*ifndef[ ]/b\" \
2024 -e \"/^#[ ]*else/b\" \
2025 -e \"/^#[ ]*elif[ ]/b\" \
2026 -e \"/^#[ ]*undef[ ]/b\" \
2027 -e \"/^#[ ]*endif/b\" \
2030 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2033 Perl_sv_setpvf(aTHX_ cmd, "\
2034 %s %s -e '/^[^#]/b' \
2035 -e '/^#[ ]*include[ ]/b' \
2036 -e '/^#[ ]*define[ ]/b' \
2037 -e '/^#[ ]*if[ ]/b' \
2038 -e '/^#[ ]*ifdef[ ]/b' \
2039 -e '/^#[ ]*ifndef[ ]/b' \
2040 -e '/^#[ ]*else/b' \
2041 -e '/^#[ ]*elif[ ]/b' \
2042 -e '/^#[ ]*undef[ ]/b' \
2043 -e '/^#[ ]*endif/b' \
2047 Perl_sv_setpvf(aTHX_ cmd, "\
2048 %s %s -e '/^[^#]/b' \
2049 -e '/^#[ ]*include[ ]/b' \
2050 -e '/^#[ ]*define[ ]/b' \
2051 -e '/^#[ ]*if[ ]/b' \
2052 -e '/^#[ ]*ifdef[ ]/b' \
2053 -e '/^#[ ]*ifndef[ ]/b' \
2054 -e '/^#[ ]*else/b' \
2055 -e '/^#[ ]*elif[ ]/b' \
2056 -e '/^#[ ]*undef[ ]/b' \
2057 -e '/^#[ ]*endif/b' \
2066 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2068 scriptname, cpp, sv, CPPMINUS);
2069 PL_doextract = FALSE;
2070 #ifdef IAMSUID /* actually, this is caught earlier */
2071 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2073 (void)seteuid(PL_uid); /* musn't stay setuid root */
2076 (void)setreuid((Uid_t)-1, PL_uid);
2078 #ifdef HAS_SETRESUID
2079 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2081 PerlProc_setuid(PL_uid);
2085 if (PerlProc_geteuid() != PL_uid)
2086 Perl_croak(aTHX_ "Can't do seteuid!\n");
2088 #endif /* IAMSUID */
2089 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2093 else if (!*scriptname) {
2094 forbid_setid("program input from stdin");
2095 PL_rsfp = PerlIO_stdin();
2098 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2099 #if defined(HAS_FCNTL) && defined(F_SETFD)
2101 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2106 #ifndef IAMSUID /* in case script is not readable before setuid */
2108 PerlLIO_stat(SvPVX(GvSV(PL_curcop->cop_filegv)),&PL_statbuf) >= 0 &&
2109 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2112 PerlProc_execv(Perl_form(aTHX_ "%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv);
2113 Perl_croak(aTHX_ "Can't do setuid\n");
2117 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2118 SvPVX(GvSV(PL_curcop->cop_filegv)), Strerror(errno));
2123 * I_SYSSTATVFS HAS_FSTATVFS
2125 * I_STATFS HAS_FSTATFS
2126 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2127 * here so that metaconfig picks them up. */
2131 S_fd_on_nosuid_fs(pTHX_ int fd)
2136 * Preferred order: fstatvfs(), fstatfs(), getmntent().
2137 * fstatvfs() is UNIX98.
2139 * getmntent() is O(number-of-mounted-filesystems) and can hang.
2142 # ifdef HAS_FSTATVFS
2143 struct statvfs stfs;
2144 check_okay = fstatvfs(fd, &stfs) == 0;
2145 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2147 # if defined(HAS_FSTATFS) && defined(HAS_STRUCT_STATFS_FLAGS)
2149 check_okay = fstatfs(fd, &stfs) == 0;
2150 # undef PERL_MOUNT_NOSUID
2151 # if !defined(PERL_MOUNT_NOSUID) && defined(MNT_NOSUID)
2152 # define PERL_MOUNT_NOSUID MNT_NOSUID
2154 # if !defined(PERL_MOUNT_NOSUID) && defined(MS_NOSUID)
2155 # define PERL_MOUNT_NOSUID MS_NOSUID
2157 # if !defined(PERL_MOUNT_NOSUID) && defined(M_NOSUID)
2158 # define PERL_MOUNT_NOSUID M_NOSUID
2160 # ifdef PERL_MOUNT_NOSUID
2161 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2164 # if defined(HAS_GETMNTENT) && defined(HAS_HASMNTOPT) && defined(MNTOPT_NOSUID)
2165 FILE *mtab = fopen("/etc/mtab", "r");
2166 struct mntent *entry;
2167 struct stat stb, fsb;
2169 if (mtab && (fstat(fd, &stb) == 0)) {
2170 while (entry = getmntent(mtab)) {
2171 if (stat(entry->mnt_dir, &fsb) == 0
2172 && fsb.st_dev == stb.st_dev)
2174 /* found the filesystem */
2176 if (hasmntopt(entry, MNTOPT_NOSUID))
2179 } /* A single fs may well fail its stat(). */
2184 # endif /* mntent */
2185 # endif /* statfs */
2186 # endif /* statvfs */
2188 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\"", PL_origfilename);
2191 #endif /* IAMSUID */
2194 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2198 /* do we need to emulate setuid on scripts? */
2200 /* This code is for those BSD systems that have setuid #! scripts disabled
2201 * in the kernel because of a security problem. Merely defining DOSUID
2202 * in perl will not fix that problem, but if you have disabled setuid
2203 * scripts in the kernel, this will attempt to emulate setuid and setgid
2204 * on scripts that have those now-otherwise-useless bits set. The setuid
2205 * root version must be called suidperl or sperlN.NNN. If regular perl
2206 * discovers that it has opened a setuid script, it calls suidperl with
2207 * the same argv that it had. If suidperl finds that the script it has
2208 * just opened is NOT setuid root, it sets the effective uid back to the
2209 * uid. We don't just make perl setuid root because that loses the
2210 * effective uid we had before invoking perl, if it was different from the
2213 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2214 * be defined in suidperl only. suidperl must be setuid root. The
2215 * Configure script will set this up for you if you want it.
2222 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2223 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2224 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2229 #ifndef HAS_SETREUID
2230 /* On this access check to make sure the directories are readable,
2231 * there is actually a small window that the user could use to make
2232 * filename point to an accessible directory. So there is a faint
2233 * chance that someone could execute a setuid script down in a
2234 * non-accessible directory. I don't know what to do about that.
2235 * But I don't think it's too important. The manual lies when
2236 * it says access() is useful in setuid programs.
2238 if (PerlLIO_access(SvPVX(GvSV(PL_curcop->cop_filegv)),1)) /*double check*/
2239 Perl_croak(aTHX_ "Permission denied");
2241 /* If we can swap euid and uid, then we can determine access rights
2242 * with a simple stat of the file, and then compare device and
2243 * inode to make sure we did stat() on the same file we opened.
2244 * Then we just have to make sure he or she can execute it.
2247 struct stat tmpstatbuf;
2251 setreuid(PL_euid,PL_uid) < 0
2254 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2257 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2258 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2259 if (PerlLIO_stat(SvPVX(GvSV(PL_curcop->cop_filegv)),&tmpstatbuf) < 0)
2260 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2261 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2262 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2263 Perl_croak(aTHX_ "Permission denied");
2265 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2266 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2267 (void)PerlIO_close(PL_rsfp);
2268 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2269 PerlIO_printf(PL_rsfp,
2270 "User %ld tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2271 (Filename of set-id script was %s, uid %ld gid %ld.)\n\nSincerely,\nperl\n",
2272 (long)PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2273 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
2274 SvPVX(GvSV(PL_curcop->cop_filegv)),
2275 (long)PL_statbuf.st_uid, (long)PL_statbuf.st_gid);
2276 (void)PerlProc_pclose(PL_rsfp);
2278 Perl_croak(aTHX_ "Permission denied\n");
2282 setreuid(PL_uid,PL_euid) < 0
2284 # if defined(HAS_SETRESUID)
2285 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2288 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2289 Perl_croak(aTHX_ "Can't reswap uid and euid");
2290 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2291 Perl_croak(aTHX_ "Permission denied\n");
2293 #endif /* HAS_SETREUID */
2294 #endif /* IAMSUID */
2296 if (!S_ISREG(PL_statbuf.st_mode))
2297 Perl_croak(aTHX_ "Permission denied");
2298 if (PL_statbuf.st_mode & S_IWOTH)
2299 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2300 PL_doswitches = FALSE; /* -s is insecure in suid */
2301 PL_curcop->cop_line++;
2302 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2303 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2304 Perl_croak(aTHX_ "No #! line");
2305 s = SvPV(PL_linestr,n_a)+2;
2307 while (!isSPACE(*s)) s++;
2308 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2309 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2310 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2311 Perl_croak(aTHX_ "Not a perl script");
2312 while (*s == ' ' || *s == '\t') s++;
2314 * #! arg must be what we saw above. They can invoke it by
2315 * mentioning suidperl explicitly, but they may not add any strange
2316 * arguments beyond what #! says if they do invoke suidperl that way.
2318 len = strlen(validarg);
2319 if (strEQ(validarg," PHOOEY ") ||
2320 strnNE(s,validarg,len) || !isSPACE(s[len]))
2321 Perl_croak(aTHX_ "Args must match #! line");
2324 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2325 PL_euid == PL_statbuf.st_uid)
2327 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2328 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2329 #endif /* IAMSUID */
2331 if (PL_euid) { /* oops, we're not the setuid root perl */
2332 (void)PerlIO_close(PL_rsfp);
2335 PerlProc_execv(Perl_form(aTHX_ "%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv);
2337 Perl_croak(aTHX_ "Can't do setuid\n");
2340 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2342 (void)setegid(PL_statbuf.st_gid);
2345 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2347 #ifdef HAS_SETRESGID
2348 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2350 PerlProc_setgid(PL_statbuf.st_gid);
2354 if (PerlProc_getegid() != PL_statbuf.st_gid)
2355 Perl_croak(aTHX_ "Can't do setegid!\n");
2357 if (PL_statbuf.st_mode & S_ISUID) {
2358 if (PL_statbuf.st_uid != PL_euid)
2360 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2363 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2365 #ifdef HAS_SETRESUID
2366 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2368 PerlProc_setuid(PL_statbuf.st_uid);
2372 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2373 Perl_croak(aTHX_ "Can't do seteuid!\n");
2375 else if (PL_uid) { /* oops, mustn't run as root */
2377 (void)seteuid((Uid_t)PL_uid);
2380 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2382 #ifdef HAS_SETRESUID
2383 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2385 PerlProc_setuid((Uid_t)PL_uid);
2389 if (PerlProc_geteuid() != PL_uid)
2390 Perl_croak(aTHX_ "Can't do seteuid!\n");
2393 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2394 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
2397 else if (PL_preprocess)
2398 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
2399 else if (fdscript >= 0)
2400 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
2402 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
2404 /* We absolutely must clear out any saved ids here, so we */
2405 /* exec the real perl, substituting fd script for scriptname. */
2406 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2407 PerlIO_rewind(PL_rsfp);
2408 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2409 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2410 if (!PL_origargv[which])
2411 Perl_croak(aTHX_ "Permission denied");
2412 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
2413 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
2414 #if defined(HAS_FCNTL) && defined(F_SETFD)
2415 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
2417 PerlProc_execv(Perl_form(aTHX_ "%s/perl%s", BIN_EXP, PL_patchlevel), PL_origargv);/* try again */
2418 Perl_croak(aTHX_ "Can't do setuid\n");
2419 #endif /* IAMSUID */
2421 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
2422 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
2424 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
2425 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
2427 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
2430 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2431 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2432 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
2433 /* not set-id, must be wrapped */
2439 S_find_beginning(pTHX)
2441 register char *s, *s2;
2443 /* skip forward in input to the real script? */
2446 while (PL_doextract) {
2447 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
2448 Perl_croak(aTHX_ "No Perl script found in input\n");
2449 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
2450 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
2451 PL_doextract = FALSE;
2452 while (*s && !(isSPACE (*s) || *s == '#')) s++;
2454 while (*s == ' ' || *s == '\t') s++;
2456 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
2457 if (strnEQ(s2-4,"perl",4))
2459 while (s = moreswitches(s)) ;
2461 if (PL_cddir && PerlDir_chdir(PL_cddir) < 0)
2462 Perl_croak(aTHX_ "Can't chdir to %s",PL_cddir);
2471 PL_uid = (int)PerlProc_getuid();
2472 PL_euid = (int)PerlProc_geteuid();
2473 PL_gid = (int)PerlProc_getgid();
2474 PL_egid = (int)PerlProc_getegid();
2476 PL_uid |= PL_gid << 16;
2477 PL_euid |= PL_egid << 16;
2479 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
2483 S_forbid_setid(pTHX_ char *s)
2485 if (PL_euid != PL_uid)
2486 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
2487 if (PL_egid != PL_gid)
2488 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
2492 S_init_debugger(pTHX)
2495 PL_curstash = PL_debstash;
2496 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
2497 AvREAL_off(PL_dbargs);
2498 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
2499 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
2500 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
2501 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
2502 sv_setiv(PL_DBsingle, 0);
2503 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
2504 sv_setiv(PL_DBtrace, 0);
2505 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
2506 sv_setiv(PL_DBsignal, 0);
2507 PL_curstash = PL_defstash;
2510 #ifndef STRESS_REALLOC
2511 #define REASONABLE(size) (size)
2513 #define REASONABLE(size) (1) /* unreasonable */
2517 Perl_init_stacks(pTHX)
2519 /* start with 128-item stack and 8K cxstack */
2520 PL_curstackinfo = new_stackinfo(REASONABLE(128),
2521 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
2522 PL_curstackinfo->si_type = PERLSI_MAIN;
2523 PL_curstack = PL_curstackinfo->si_stack;
2524 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
2526 PL_stack_base = AvARRAY(PL_curstack);
2527 PL_stack_sp = PL_stack_base;
2528 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
2530 New(50,PL_tmps_stack,REASONABLE(128),SV*);
2533 PL_tmps_max = REASONABLE(128);
2535 New(54,PL_markstack,REASONABLE(32),I32);
2536 PL_markstack_ptr = PL_markstack;
2537 PL_markstack_max = PL_markstack + REASONABLE(32);
2541 New(54,PL_scopestack,REASONABLE(32),I32);
2542 PL_scopestack_ix = 0;
2543 PL_scopestack_max = REASONABLE(32);
2545 New(54,PL_savestack,REASONABLE(128),ANY);
2546 PL_savestack_ix = 0;
2547 PL_savestack_max = REASONABLE(128);
2549 New(54,PL_retstack,REASONABLE(16),OP*);
2551 PL_retstack_max = REASONABLE(16);
2560 while (PL_curstackinfo->si_next)
2561 PL_curstackinfo = PL_curstackinfo->si_next;
2562 while (PL_curstackinfo) {
2563 PERL_SI *p = PL_curstackinfo->si_prev;
2564 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
2565 Safefree(PL_curstackinfo->si_cxstack);
2566 Safefree(PL_curstackinfo);
2567 PL_curstackinfo = p;
2569 Safefree(PL_tmps_stack);
2570 Safefree(PL_markstack);
2571 Safefree(PL_scopestack);
2572 Safefree(PL_savestack);
2573 Safefree(PL_retstack);
2575 Safefree(PL_debname);
2576 Safefree(PL_debdelim);
2581 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
2592 lex_start(PL_linestr);
2594 PL_subname = newSVpvn("main",4);
2598 S_init_predump_symbols(pTHX)
2604 sv_setpvn(get_sv("\"", TRUE), " ", 1);
2605 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
2606 GvMULTI_on(PL_stdingv);
2607 IoIFP(GvIOp(PL_stdingv)) = PerlIO_stdin();
2608 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
2610 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(PL_stdingv));
2612 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
2614 IoOFP(GvIOp(tmpgv)) = IoIFP(GvIOp(tmpgv)) = PerlIO_stdout();
2616 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
2618 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(PL_defoutgv));
2620 othergv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
2621 GvMULTI_on(othergv);
2622 IoOFP(GvIOp(othergv)) = IoIFP(GvIOp(othergv)) = PerlIO_stderr();
2623 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
2625 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(othergv));
2627 PL_statname = NEWSV(66,0); /* last filename we did stat on */
2630 PL_osname = savepv(OSNAME);
2634 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
2641 argc--,argv++; /* skip name of script */
2642 if (PL_doswitches) {
2643 for (; argc > 0 && **argv == '-'; argc--,argv++) {
2646 if (argv[0][1] == '-') {
2650 if (s = strchr(argv[0], '=')) {
2652 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
2655 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
2658 PL_toptarget = NEWSV(0,0);
2659 sv_upgrade(PL_toptarget, SVt_PVFM);
2660 sv_setpvn(PL_toptarget, "", 0);
2661 PL_bodytarget = NEWSV(0,0);
2662 sv_upgrade(PL_bodytarget, SVt_PVFM);
2663 sv_setpvn(PL_bodytarget, "", 0);
2664 PL_formtarget = PL_bodytarget;
2667 if (tmpgv = gv_fetchpv("0",TRUE, SVt_PV)) {
2668 sv_setpv(GvSV(tmpgv),PL_origfilename);
2669 magicname("0", "0", 1);
2671 if (tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))
2672 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
2673 if (PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV)) {
2674 GvMULTI_on(PL_argvgv);
2675 (void)gv_AVadd(PL_argvgv);
2676 av_clear(GvAVn(PL_argvgv));
2677 for (; argc > 0; argc--,argv++) {
2678 av_push(GvAVn(PL_argvgv),newSVpv(argv[0],0));
2681 if (PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV)) {
2683 GvMULTI_on(PL_envgv);
2684 hv = GvHVn(PL_envgv);
2685 hv_magic(hv, PL_envgv, 'E');
2686 #if !defined( VMS) && !defined(EPOC) /* VMS doesn't have environ array */
2687 /* Note that if the supplied env parameter is actually a copy
2688 of the global environ then it may now point to free'd memory
2689 if the environment has been modified since. To avoid this
2690 problem we treat env==NULL as meaning 'use the default'
2695 environ[0] = Nullch;
2696 for (; *env; env++) {
2697 if (!(s = strchr(*env,'=')))
2703 sv = newSVpv(s--,0);
2704 (void)hv_store(hv, *env, s - *env, sv, 0);
2706 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
2707 /* Sins of the RTL. See note in my_setenv(). */
2708 (void)PerlEnv_putenv(savepv(*env));
2712 #ifdef DYNAMIC_ENV_FETCH
2713 HvNAME(hv) = savepv(ENV_HV_NAME);
2717 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
2718 sv_setiv(GvSV(tmpgv), (IV)getpid());
2722 S_init_perllib(pTHX)
2727 s = PerlEnv_getenv("PERL5LIB");
2731 incpush(PerlEnv_getenv("PERLLIB"), FALSE);
2733 /* Treat PERL5?LIB as a possible search list logical name -- the
2734 * "natural" VMS idiom for a Unix path string. We allow each
2735 * element to be a set of |-separated directories for compatibility.
2739 if (my_trnlnm("PERL5LIB",buf,0))
2740 do { incpush(buf,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
2742 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE);
2746 /* Use the ~-expanded versions of APPLLIB (undocumented),
2747 ARCHLIB PRIVLIB SITEARCH and SITELIB
2750 incpush(APPLLIB_EXP, TRUE);
2754 incpush(ARCHLIB_EXP, FALSE);
2757 #define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
2760 incpush(PRIVLIB_EXP, TRUE);
2762 incpush(PRIVLIB_EXP, FALSE);
2766 incpush(SITEARCH_EXP, FALSE);
2770 incpush(SITELIB_EXP, TRUE);
2772 incpush(SITELIB_EXP, FALSE);
2776 incpush(".", FALSE);
2780 # define PERLLIB_SEP ';'
2783 # define PERLLIB_SEP '|'
2785 # define PERLLIB_SEP ':'
2788 #ifndef PERLLIB_MANGLE
2789 # define PERLLIB_MANGLE(s,n) (s)
2793 S_incpush(pTHX_ char *p, int addsubdirs)
2795 SV *subdir = Nullsv;
2801 subdir = sv_newmortal();
2802 if (!PL_archpat_auto) {
2803 STRLEN len = (sizeof(ARCHNAME) + strlen(PL_patchlevel)
2804 + sizeof("//auto"));
2805 New(55, PL_archpat_auto, len, char);
2806 sprintf(PL_archpat_auto, "/%s/%s/auto", ARCHNAME, PL_patchlevel);
2808 for (len = sizeof(ARCHNAME) + 2;
2809 PL_archpat_auto[len] != '\0' && PL_archpat_auto[len] != '/'; len++)
2810 if (PL_archpat_auto[len] == '.') PL_archpat_auto[len] = '_';
2815 /* Break at all separators */
2817 SV *libdir = NEWSV(55,0);
2820 /* skip any consecutive separators */
2821 while ( *p == PERLLIB_SEP ) {
2822 /* Uncomment the next line for PATH semantics */
2823 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
2827 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
2828 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
2833 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
2834 p = Nullch; /* break out */
2838 * BEFORE pushing libdir onto @INC we may first push version- and
2839 * archname-specific sub-directories.
2842 struct stat tmpstatbuf;
2847 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
2849 while (unix[len-1] == '/') len--; /* Cosmetic */
2850 sv_usepvn(libdir,unix,len);
2853 PerlIO_printf(PerlIO_stderr(),
2854 "Failed to unixify @INC element \"%s\"\n",
2857 /* .../archname/version if -d .../archname/version/auto */
2858 sv_setsv(subdir, libdir);
2859 sv_catpv(subdir, PL_archpat_auto);
2860 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2861 S_ISDIR(tmpstatbuf.st_mode))
2862 av_push(GvAVn(PL_incgv),
2863 newSVpvn(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2865 /* .../archname if -d .../archname/auto */
2866 sv_insert(subdir, SvCUR(libdir) + sizeof(ARCHNAME),
2867 strlen(PL_patchlevel) + 1, "", 0);
2868 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2869 S_ISDIR(tmpstatbuf.st_mode))
2870 av_push(GvAVn(PL_incgv),
2871 newSVpvn(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2874 /* finally push this lib directory on the end of @INC */
2875 av_push(GvAVn(PL_incgv), libdir);
2880 STATIC struct perl_thread *
2881 S_init_main_thread(pTHX)
2883 #ifndef PERL_IMPLICIT_CONTEXT
2884 struct perl_thread *thr;
2888 Newz(53, thr, 1, struct perl_thread);
2889 PL_curcop = &PL_compiling;
2890 thr->cvcache = newHV();
2891 thr->threadsv = newAV();
2892 /* thr->threadsvp is set when find_threadsv is called */
2893 thr->specific = newAV();
2894 thr->errhv = newHV();
2895 thr->flags = THRf_R_JOINABLE;
2896 MUTEX_INIT(&thr->mutex);
2897 /* Handcraft thrsv similarly to mess_sv */
2898 New(53, PL_thrsv, 1, SV);
2899 Newz(53, xpv, 1, XPV);
2900 SvFLAGS(PL_thrsv) = SVt_PV;
2901 SvANY(PL_thrsv) = (void*)xpv;
2902 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
2903 SvPVX(PL_thrsv) = (char*)thr;
2904 SvCUR_set(PL_thrsv, sizeof(thr));
2905 SvLEN_set(PL_thrsv, sizeof(thr));
2906 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
2907 thr->oursv = PL_thrsv;
2908 PL_chopset = " \n-";
2911 MUTEX_LOCK(&PL_threads_mutex);
2916 MUTEX_UNLOCK(&PL_threads_mutex);
2918 #ifdef HAVE_THREAD_INTERN
2919 Perl_init_thread_intern(thr);
2922 #ifdef SET_THREAD_SELF
2923 SET_THREAD_SELF(thr);
2925 thr->self = pthread_self();
2926 #endif /* SET_THREAD_SELF */
2930 * These must come after the SET_THR because sv_setpvn does
2931 * SvTAINT and the taint fields require dTHR.
2933 PL_toptarget = NEWSV(0,0);
2934 sv_upgrade(PL_toptarget, SVt_PVFM);
2935 sv_setpvn(PL_toptarget, "", 0);
2936 PL_bodytarget = NEWSV(0,0);
2937 sv_upgrade(PL_bodytarget, SVt_PVFM);
2938 sv_setpvn(PL_bodytarget, "", 0);
2939 PL_formtarget = PL_bodytarget;
2940 thr->errsv = newSVpvn("", 0);
2941 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
2944 PL_regcompp = FUNC_NAME_TO_PTR(Perl_pregcomp);
2945 PL_regexecp = FUNC_NAME_TO_PTR(Perl_regexec_flags);
2947 PL_reginterp_cnt = 0;
2951 #endif /* USE_THREADS */
2954 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
2958 line_t oldline = PL_curcop->cop_line;
2963 while (AvFILL(paramList) >= 0) {
2964 cv = (CV*)av_shift(paramList);
2966 CALLPROTECT(aTHX_ &ret, FUNC_NAME_TO_PTR(S_call_list_body), cv);
2969 (void)SvPV(atsv, len);
2971 PL_curcop = &PL_compiling;
2972 PL_curcop->cop_line = oldline;
2973 if (paramList == PL_beginav)
2974 sv_catpv(atsv, "BEGIN failed--compilation aborted");
2976 sv_catpv(atsv, "END failed--cleanup aborted");
2977 while (PL_scopestack_ix > oldscope)
2979 Perl_croak(aTHX_ "%s", SvPVX(atsv));
2986 /* my_exit() was called */
2987 while (PL_scopestack_ix > oldscope)
2990 PL_curstash = PL_defstash;
2992 call_list(oldscope, PL_endav);
2993 PL_curcop = &PL_compiling;
2994 PL_curcop->cop_line = oldline;
2995 if (PL_statusvalue) {
2996 if (paramList == PL_beginav)
2997 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
2999 Perl_croak(aTHX_ "END failed--cleanup aborted");
3005 PL_curcop = &PL_compiling;
3006 PL_curcop->cop_line = oldline;
3009 PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
3017 S_call_list_body(pTHX_ va_list args)
3020 CV *cv = va_arg(args, CV*);
3022 PUSHMARK(PL_stack_sp);
3023 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3028 Perl_my_exit(pTHX_ U32 status)
3032 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3033 thr, (unsigned long) status));
3042 STATUS_NATIVE_SET(status);
3049 Perl_my_failure_exit(pTHX)
3052 if (vaxc$errno & 1) {
3053 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3054 STATUS_NATIVE_SET(44);
3057 if (!vaxc$errno && errno) /* unlikely */
3058 STATUS_NATIVE_SET(44);
3060 STATUS_NATIVE_SET(vaxc$errno);
3065 STATUS_POSIX_SET(errno);
3067 exitstatus = STATUS_POSIX >> 8;
3068 if (exitstatus & 255)
3069 STATUS_POSIX_SET(exitstatus);
3071 STATUS_POSIX_SET(255);
3078 S_my_exit_jump(pTHX)
3081 register PERL_CONTEXT *cx;
3086 SvREFCNT_dec(PL_e_script);
3087 PL_e_script = Nullsv;
3090 POPSTACK_TO(PL_mainstack);
3091 if (cxstack_ix >= 0) {
3094 POPBLOCK(cx,PL_curpm);
3103 #endif /* PERL_OBJECT */
3108 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3111 p = SvPVX(PL_e_script);
3112 nl = strchr(p, '\n');
3113 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3115 filter_del(read_e_script);
3118 sv_catpvn(buf_sv, p, nl-p);
3119 sv_chop(PL_e_script, nl);