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 && ckWARN_d(WARN_INTERNAL)) {
452 if (PL_scopestack_ix != 0)
453 Perl_warner(aTHX_ WARN_INTERNAL,
454 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
455 (long)PL_scopestack_ix);
456 if (PL_savestack_ix != 0)
457 Perl_warner(aTHX_ WARN_INTERNAL,
458 "Unbalanced saves: %ld more saves than restores\n",
459 (long)PL_savestack_ix);
460 if (PL_tmps_floor != -1)
461 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
462 (long)PL_tmps_floor + 1);
463 if (cxstack_ix != -1)
464 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
465 (long)cxstack_ix + 1);
468 /* Now absolutely destruct everything, somehow or other, loops or no. */
470 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
471 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
472 last_sv_count = PL_sv_count;
475 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
476 SvFLAGS(PL_strtab) |= SVt_PVHV;
478 /* Destruct the global string table. */
480 /* Yell and reset the HeVAL() slots that are still holding refcounts,
481 * so that sv_free() won't fail on them.
489 max = HvMAX(PL_strtab);
490 array = HvARRAY(PL_strtab);
493 if (hent && ckWARN_d(WARN_INTERNAL)) {
494 Perl_warner(aTHX_ WARN_INTERNAL,
495 "Unbalanced string table refcount: (%d) for \"%s\"",
496 HeVAL(hent) - Nullsv, HeKEY(hent));
497 HeVAL(hent) = Nullsv;
507 SvREFCNT_dec(PL_strtab);
509 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
510 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
514 /* No SVs have survived, need to clean out */
516 PL_pidstatus = Nullhv;
517 Safefree(PL_origfilename);
518 Safefree(PL_archpat_auto);
519 Safefree(PL_reg_start_tmp);
521 Safefree(PL_reg_curpm);
522 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
523 Safefree(PL_op_mask);
525 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
527 DEBUG_P(debprofdump());
529 MUTEX_DESTROY(&PL_strtab_mutex);
530 MUTEX_DESTROY(&PL_sv_mutex);
531 MUTEX_DESTROY(&PL_eval_mutex);
532 MUTEX_DESTROY(&PL_cred_mutex);
533 COND_DESTROY(&PL_eval_cond);
534 #ifdef EMULATE_ATOMIC_REFCOUNTS
535 MUTEX_DESTROY(&PL_svref_mutex);
536 #endif /* EMULATE_ATOMIC_REFCOUNTS */
538 /* As the penultimate thing, free the non-arena SV for thrsv */
539 Safefree(SvPVX(PL_thrsv));
540 Safefree(SvANY(PL_thrsv));
543 #endif /* USE_THREADS */
545 /* As the absolutely last thing, free the non-arena SV for mess() */
548 /* it could have accumulated taint magic */
549 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
552 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
553 moremagic = mg->mg_moremagic;
554 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
555 Safefree(mg->mg_ptr);
559 /* we know that type >= SVt_PV */
560 SvOOK_off(PL_mess_sv);
561 Safefree(SvPVX(PL_mess_sv));
562 Safefree(SvANY(PL_mess_sv));
563 Safefree(PL_mess_sv);
574 # if !defined(PERL_IMPLICIT_CONTEXT)
575 if (!(PL_curinterp = my_perl))
583 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
585 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
586 PL_exitlist[PL_exitlistlen].fn = fn;
587 PL_exitlist[PL_exitlistlen].ptr = ptr;
592 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
601 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
604 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
605 setuid perl scripts securely.\n");
609 #if !defined(PERL_OBJECT) && !defined(PERL_IMPLICIT_CONTEXT)
610 if (!(PL_curinterp = my_perl))
614 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
615 _dyld_lookup_and_bind
616 ("__environ", (unsigned long *) &environ_pointer, NULL);
621 #ifndef VMS /* VMS doesn't have environ array */
622 PL_origenviron = environ;
627 /* Come here if running an undumped a.out. */
629 PL_origfilename = savepv(argv[0]);
630 PL_do_undump = FALSE;
631 cxstack_ix = -1; /* start label stack again */
633 init_postdump_symbols(argc,argv,env);
638 PL_curpad = AvARRAY(PL_comppad);
639 op_free(PL_main_root);
640 PL_main_root = Nullop;
642 PL_main_start = Nullop;
643 SvREFCNT_dec(PL_main_cv);
647 oldscope = PL_scopestack_ix;
648 PL_dowarn = G_WARN_OFF;
650 CALLPROTECT(aTHX_ &ret, FUNC_NAME_TO_PTR(S_parse_body), env, xsinit);
658 /* my_exit() was called */
659 while (PL_scopestack_ix > oldscope)
662 PL_curstash = PL_defstash;
664 call_list(oldscope, PL_endav);
665 return STATUS_NATIVE_EXPORT;
667 PerlIO_printf(PerlIO_stderr(), "panic: top_env\n");
674 S_parse_body(pTHX_ va_list args)
677 int argc = PL_origargc;
678 char **argv = PL_origargv;
679 char **env = va_arg(args, char**);
680 char *scriptname = NULL;
682 VOL bool dosearch = FALSE;
688 XSINIT_t xsinit = va_arg(args, XSINIT_t);
690 sv_setpvn(PL_linestr,"",0);
691 sv = newSVpvn("",0); /* first used for -I flags */
695 for (argc--,argv++; argc > 0; argc--,argv++) {
696 if (argv[0][0] != '-' || !argv[0][1])
700 validarg = " PHOOEY ";
707 #ifndef PERL_STRICT_CR
731 if (s = moreswitches(s))
741 if (PL_euid != PL_uid || PL_egid != PL_gid)
742 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
744 PL_e_script = newSVpvn("",0);
745 filter_add(read_e_script, NULL);
748 sv_catpv(PL_e_script, s);
750 sv_catpv(PL_e_script, argv[1]);
754 Perl_croak(aTHX_ "No code specified for -e");
755 sv_catpv(PL_e_script, "\n");
758 case 'I': /* -I handled both here and in moreswitches() */
760 if (!*++s && (s=argv[1]) != Nullch) {
763 while (s && isSPACE(*s))
767 for (e = s; *e && !isSPACE(*e); e++) ;
774 } /* XXX else croak? */
778 PL_preprocess = TRUE;
788 PL_preambleav = newAV();
789 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
791 PL_Sv = newSVpv("print myconfig();",0);
793 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
795 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
797 #if defined(DEBUGGING) || defined(MULTIPLICITY)
798 sv_catpv(PL_Sv,"\" Compile-time options:");
800 sv_catpv(PL_Sv," DEBUGGING");
803 sv_catpv(PL_Sv," MULTIPLICITY");
805 sv_catpv(PL_Sv,"\\n\",");
807 #if defined(LOCAL_PATCH_COUNT)
808 if (LOCAL_PATCH_COUNT > 0) {
810 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
811 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
812 if (PL_localpatches[i])
813 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
817 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
820 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
822 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
827 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
828 print \" \\%ENV:\\n @env\\n\" if @env; \
829 print \" \\@INC:\\n @INC\\n\";");
832 PL_Sv = newSVpv("config_vars(qw(",0);
833 sv_catpv(PL_Sv, ++s);
834 sv_catpv(PL_Sv, "))");
837 av_push(PL_preambleav, PL_Sv);
838 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
844 PL_cddir = savepv(s);
849 if (!*++s || isSPACE(*s)) {
853 /* catch use of gnu style long options */
854 if (strEQ(s, "version")) {
858 if (strEQ(s, "help")) {
865 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
871 #ifndef SECURE_INTERNAL_GETENV
874 (s = PerlEnv_getenv("PERL5OPT"))) {
877 if (*s == '-' && *(s+1) == 'T')
890 if (!strchr("DIMUdmw", *s))
891 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
898 scriptname = argv[0];
901 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
903 else if (scriptname == Nullch) {
905 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
913 open_script(scriptname,dosearch,sv,&fdscript);
915 validate_suid(validarg, scriptname,fdscript);
920 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
921 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
922 CvUNIQUE_on(PL_compcv);
924 PL_comppad = newAV();
925 av_push(PL_comppad, Nullsv);
926 PL_curpad = AvARRAY(PL_comppad);
927 PL_comppad_name = newAV();
928 PL_comppad_name_fill = 0;
929 PL_min_intro_pending = 0;
932 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
933 PL_curpad[0] = (SV*)newAV();
934 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
935 CvOWNER(PL_compcv) = 0;
936 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
937 MUTEX_INIT(CvMUTEXP(PL_compcv));
938 #endif /* USE_THREADS */
940 comppadlist = newAV();
941 AvREAL_off(comppadlist);
942 av_store(comppadlist, 0, (SV*)PL_comppad_name);
943 av_store(comppadlist, 1, (SV*)PL_comppad);
944 CvPADLIST(PL_compcv) = comppadlist;
946 boot_core_UNIVERSAL();
949 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
950 #if defined(VMS) || defined(WIN32) || defined(DJGPP)
951 init_os_extras(aTHX);
958 init_predump_symbols();
959 /* init_postdump_symbols not currently designed to be called */
960 /* more than once (ENV isn't cleared first, for example) */
961 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
963 init_postdump_symbols(argc,argv,env);
967 /* now parse the script */
969 SETERRNO(0,SS$_NORMAL);
971 if (yyparse() || PL_error_count) {
973 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
975 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
979 PL_curcop->cop_line = 0;
980 PL_curstash = PL_defstash;
981 PL_preprocess = FALSE;
983 SvREFCNT_dec(PL_e_script);
984 PL_e_script = Nullsv;
987 /* now that script is parsed, we can modify record separator */
989 PL_rs = SvREFCNT_inc(PL_nrs);
990 sv_setsv(get_sv("/", TRUE), PL_rs);
995 gv_check(PL_defstash);
1001 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1002 dump_mstats("after compilation:");
1020 #if !defined(PERL_OBJECT) && !defined(PERL_IMPLICIT_CONTEXT)
1021 if (!(PL_curinterp = my_perl))
1025 oldscope = PL_scopestack_ix;
1028 CALLPROTECT(aTHX_ &ret, FUNC_NAME_TO_PTR(S_run_body), oldscope);
1031 cxstack_ix = -1; /* start context stack again */
1033 case 0: /* normal completion */
1034 case 2: /* my_exit() */
1035 while (PL_scopestack_ix > oldscope)
1038 PL_curstash = PL_defstash;
1040 call_list(oldscope, PL_endav);
1042 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1043 dump_mstats("after execution: ");
1045 return STATUS_NATIVE_EXPORT;
1048 POPSTACK_TO(PL_mainstack);
1051 PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
1061 S_run_body(pTHX_ va_list args)
1064 I32 oldscope = va_arg(args, I32);
1066 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1067 PL_sawampersand ? "Enabling" : "Omitting"));
1069 if (!PL_restartop) {
1070 DEBUG_x(dump_all());
1071 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1072 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%lx\n",
1073 (unsigned long) thr));
1076 PerlIO_printf(PerlIO_stderr(), "%s syntax OK\n", PL_origfilename);
1079 if (PERLDB_SINGLE && PL_DBsingle)
1080 sv_setiv(PL_DBsingle, 1);
1082 call_list(oldscope, PL_initav);
1088 PL_op = PL_restartop;
1092 else if (PL_main_start) {
1093 CvDEPTH(PL_main_cv) = 1;
1094 PL_op = PL_main_start;
1104 Perl_get_sv(pTHX_ const char *name, I32 create)
1108 if (name[1] == '\0' && !isALPHA(name[0])) {
1109 PADOFFSET tmp = find_threadsv(name);
1110 if (tmp != NOT_IN_PAD) {
1112 return THREADSV(tmp);
1115 #endif /* USE_THREADS */
1116 gv = gv_fetchpv(name, create, SVt_PV);
1123 Perl_get_av(pTHX_ const char *name, I32 create)
1125 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1134 Perl_get_hv(pTHX_ const char *name, I32 create)
1136 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1145 Perl_get_cv(pTHX_ const char *name, I32 create)
1147 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1148 /* XXX unsafe for threads if eval_owner isn't held */
1149 /* XXX this is probably not what they think they're getting.
1150 * It has the same effect as "sub name;", i.e. just a forward
1152 if (create && !GvCVu(gv))
1153 return newSUB(start_subparse(FALSE, 0),
1154 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1162 /* Be sure to refetch the stack pointer after calling these routines. */
1165 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1167 /* See G_* flags in cop.h */
1168 /* null terminated arg list */
1175 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1180 return call_pv(sub_name, flags);
1184 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1185 /* name of the subroutine */
1186 /* See G_* flags in cop.h */
1188 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1192 Perl_call_method(pTHX_ const char *methname, I32 flags)
1193 /* name of the subroutine */
1194 /* See G_* flags in cop.h */
1200 XPUSHs(sv_2mortal(newSVpv(methname,0)));
1205 return call_sv(*PL_stack_sp--, flags);
1208 /* May be called with any of a CV, a GV, or an SV containing the name. */
1210 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1212 /* See G_* flags in cop.h */
1215 LOGOP myop; /* fake syntax tree node */
1219 bool oldcatch = CATCH_GET;
1223 if (flags & G_DISCARD) {
1228 Zero(&myop, 1, LOGOP);
1229 myop.op_next = Nullop;
1230 if (!(flags & G_NOARGS))
1231 myop.op_flags |= OPf_STACKED;
1232 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1233 (flags & G_ARRAY) ? OPf_WANT_LIST :
1238 EXTEND(PL_stack_sp, 1);
1239 *++PL_stack_sp = sv;
1241 oldscope = PL_scopestack_ix;
1243 if (PERLDB_SUB && PL_curstash != PL_debstash
1244 /* Handle first BEGIN of -d. */
1245 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1246 /* Try harder, since this may have been a sighandler, thus
1247 * curstash may be meaningless. */
1248 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1249 && !(flags & G_NODEBUG))
1250 PL_op->op_private |= OPpENTERSUB_DB;
1252 if (!(flags & G_EVAL)) {
1254 call_xbody((OP*)&myop, FALSE);
1255 retval = PL_stack_sp - (PL_stack_base + oldmark);
1259 cLOGOP->op_other = PL_op;
1261 /* we're trying to emulate pp_entertry() here */
1263 register PERL_CONTEXT *cx;
1264 I32 gimme = GIMME_V;
1269 push_return(PL_op->op_next);
1270 PUSHBLOCK(cx, CXt_EVAL, PL_stack_sp);
1272 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1274 PL_in_eval = EVAL_INEVAL;
1275 if (flags & G_KEEPERR)
1276 PL_in_eval |= EVAL_KEEPERR;
1283 CALLPROTECT(aTHX_ &ret, FUNC_NAME_TO_PTR(S_call_body), (OP*)&myop, FALSE);
1286 retval = PL_stack_sp - (PL_stack_base + oldmark);
1287 if (!(flags & G_KEEPERR))
1294 /* my_exit() was called */
1295 PL_curstash = PL_defstash;
1298 Perl_croak(aTHX_ "Callback called exit");
1303 PL_op = PL_restartop;
1307 PL_stack_sp = PL_stack_base + oldmark;
1308 if (flags & G_ARRAY)
1312 *++PL_stack_sp = &PL_sv_undef;
1317 if (PL_scopestack_ix > oldscope) {
1321 register PERL_CONTEXT *cx;
1332 if (flags & G_DISCARD) {
1333 PL_stack_sp = PL_stack_base + oldmark;
1343 S_call_body(pTHX_ va_list args)
1345 OP *myop = va_arg(args, OP*);
1346 int is_eval = va_arg(args, int);
1348 call_xbody(myop, is_eval);
1353 S_call_xbody(pTHX_ OP *myop, int is_eval)
1357 if (PL_op == myop) {
1359 PL_op = Perl_pp_entereval(aTHX);
1361 PL_op = Perl_pp_entersub(aTHX);
1367 /* Eval a string. The G_EVAL flag is always assumed. */
1370 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1372 /* See G_* flags in cop.h */
1375 UNOP myop; /* fake syntax tree node */
1376 I32 oldmark = SP - PL_stack_base;
1382 if (flags & G_DISCARD) {
1389 Zero(PL_op, 1, UNOP);
1390 EXTEND(PL_stack_sp, 1);
1391 *++PL_stack_sp = sv;
1392 oldscope = PL_scopestack_ix;
1394 if (!(flags & G_NOARGS))
1395 myop.op_flags = OPf_STACKED;
1396 myop.op_next = Nullop;
1397 myop.op_type = OP_ENTEREVAL;
1398 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1399 (flags & G_ARRAY) ? OPf_WANT_LIST :
1401 if (flags & G_KEEPERR)
1402 myop.op_flags |= OPf_SPECIAL;
1405 CALLPROTECT(aTHX_ &ret, FUNC_NAME_TO_PTR(S_call_body), (OP*)&myop, TRUE);
1408 retval = PL_stack_sp - (PL_stack_base + oldmark);
1409 if (!(flags & G_KEEPERR))
1416 /* my_exit() was called */
1417 PL_curstash = PL_defstash;
1420 Perl_croak(aTHX_ "Callback called exit");
1425 PL_op = PL_restartop;
1429 PL_stack_sp = PL_stack_base + oldmark;
1430 if (flags & G_ARRAY)
1434 *++PL_stack_sp = &PL_sv_undef;
1439 if (flags & G_DISCARD) {
1440 PL_stack_sp = PL_stack_base + oldmark;
1450 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1453 SV* sv = newSVpv(p, 0);
1456 eval_sv(sv, G_SCALAR);
1463 if (croak_on_error && SvTRUE(ERRSV)) {
1465 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1471 /* Require a module. */
1474 Perl_require_pv(pTHX_ const char *pv)
1478 PUSHSTACKi(PERLSI_REQUIRE);
1480 sv = sv_newmortal();
1481 sv_setpv(sv, "require '");
1484 eval_sv(sv, G_DISCARD);
1490 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
1494 if (gv = gv_fetchpv(sym,TRUE, SVt_PV))
1495 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1499 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
1501 /* This message really ought to be max 23 lines.
1502 * Removed -h because the user already knows that opton. Others? */
1504 static char *usage_msg[] = {
1505 "-0[octal] specify record separator (\\0, if no argument)",
1506 "-a autosplit mode with -n or -p (splits $_ into @F)",
1507 "-c check syntax only (runs BEGIN and END blocks)",
1508 "-d[:debugger] run program under debugger",
1509 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1510 "-e 'command' one line of program (several -e's allowed, omit programfile)",
1511 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
1512 "-i[extension] edit <> files in place (makes backup if extension supplied)",
1513 "-Idirectory specify @INC/#include directory (several -I's allowed)",
1514 "-l[octal] enable line ending processing, specifies line terminator",
1515 "-[mM][-]module execute `use/no module...' before executing program",
1516 "-n assume 'while (<>) { ... }' loop around program",
1517 "-p assume loop like -n but print line also, like sed",
1518 "-P run program through C preprocessor before compilation",
1519 "-s enable rudimentary parsing for switches after programfile",
1520 "-S look for programfile using PATH environment variable",
1521 "-T enable tainting checks",
1522 "-u dump core after parsing program",
1523 "-U allow unsafe operations",
1524 "-v print version, subversion (includes VERY IMPORTANT perl info)",
1525 "-V[:variable] print configuration summary (or a single Config.pm variable)",
1526 "-w enable many useful warnings (RECOMMENDED)",
1527 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
1531 char **p = usage_msg;
1533 printf("\nUsage: %s [switches] [--] [programfile] [arguments]", name);
1535 printf("\n %s", *p++);
1538 /* This routine handles any switches that can be given during run */
1541 Perl_moreswitches(pTHX_ char *s)
1550 rschar = scan_oct(s, 4, &numlen);
1551 SvREFCNT_dec(PL_nrs);
1552 if (rschar & ~((U8)~0))
1553 PL_nrs = &PL_sv_undef;
1554 else if (!rschar && numlen >= 2)
1555 PL_nrs = newSVpvn("", 0);
1558 PL_nrs = newSVpvn(&ch, 1);
1564 PL_splitstr = savepv(s + 1);
1578 if (*s == ':' || *s == '=') {
1579 my_setenv("PERL5DB", Perl_form(aTHX_ "use Devel::%s;", ++s));
1583 PL_perldb = PERLDB_ALL;
1591 if (isALPHA(s[1])) {
1592 static char debopts[] = "psltocPmfrxuLHXDS";
1595 for (s++; *s && (d = strchr(debopts,*s)); s++)
1596 PL_debug |= 1 << (d - debopts);
1599 PL_debug = atoi(s+1);
1600 for (s++; isDIGIT(*s); s++) ;
1602 PL_debug |= 0x80000000;
1605 if (ckWARN_d(WARN_DEBUGGING))
1606 Perl_warner(aTHX_ WARN_DEBUGGING,
1607 "Recompile perl with -DDEBUGGING to use -D switch\n");
1608 for (s++; isALNUM(*s); s++) ;
1614 usage(PL_origargv[0]);
1618 Safefree(PL_inplace);
1619 PL_inplace = savepv(s+1);
1621 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
1624 if (*s == '-') /* Additional switches on #! line. */
1628 case 'I': /* -I handled both here and in parse_perl() */
1631 while (*s && isSPACE(*s))
1635 for (e = s; *e && !isSPACE(*e); e++) ;
1636 p = savepvn(s, e-s);
1642 Perl_croak(aTHX_ "No space allowed after -I");
1650 PL_ors = savepv("\n");
1652 *PL_ors = scan_oct(s, 3 + (*s == '0'), &numlen);
1657 if (RsPARA(PL_nrs)) {
1662 PL_ors = SvPV(PL_nrs, PL_orslen);
1663 PL_ors = savepvn(PL_ors, PL_orslen);
1667 forbid_setid("-M"); /* XXX ? */
1670 forbid_setid("-m"); /* XXX ? */
1675 /* -M-foo == 'no foo' */
1676 if (*s == '-') { use = "no "; ++s; }
1677 sv = newSVpv(use,0);
1679 /* We allow -M'Module qw(Foo Bar)' */
1680 while(isALNUM(*s) || *s==':') ++s;
1682 sv_catpv(sv, start);
1683 if (*(start-1) == 'm') {
1685 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
1686 sv_catpv( sv, " ()");
1689 sv_catpvn(sv, start, s-start);
1690 sv_catpv(sv, " split(/,/,q{");
1695 if (PL_preambleav == NULL)
1696 PL_preambleav = newAV();
1697 av_push(PL_preambleav, sv);
1700 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1712 PL_doswitches = TRUE;
1717 Perl_croak(aTHX_ "Too late for \"-T\" option");
1721 PL_do_undump = TRUE;
1729 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
1730 printf("\nThis is perl, version %d.%03d_%02d built for %s",
1731 PERL_REVISION, PERL_VERSION, PERL_SUBVERSION, ARCHNAME);
1733 printf("\nThis is perl, version %s built for %s",
1734 PL_patchlevel, ARCHNAME);
1736 #if defined(LOCAL_PATCH_COUNT)
1737 if (LOCAL_PATCH_COUNT > 0)
1738 printf("\n(with %d registered patch%s, see perl -V for more detail)",
1739 LOCAL_PATCH_COUNT, (LOCAL_PATCH_COUNT!=1) ? "es" : "");
1742 printf("\n\nCopyright 1987-1999, Larry Wall\n");
1744 printf("\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
1747 printf("djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n");
1748 printf("djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
1751 printf("\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
1752 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
1755 printf("atariST series port, ++jrb bammi@cadence.com\n");
1758 printf("BeOS port Copyright Tom Spindler, 1997-1999\n");
1761 printf("MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
1764 printf("MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
1767 printf("Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
1770 printf("VM/ESA port by Neale Ferguson, 1998-1999\n");
1773 printf("BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
1776 printf("MiNT port by Guido Flohr, 1997-1999\n");
1778 #ifdef BINARY_BUILD_NOTICE
1779 BINARY_BUILD_NOTICE;
1782 Perl may be copied only under the terms of either the Artistic License or the\n\
1783 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
1784 Complete documentation for Perl, including FAQ lists, should be found on\n\
1785 this system using `man perl' or `perldoc perl'. If you have access to the\n\
1786 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
1789 if (! (PL_dowarn & G_WARN_ALL_MASK))
1790 PL_dowarn |= G_WARN_ON;
1794 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
1795 PL_compiling.cop_warnings = WARN_ALL ;
1799 PL_dowarn = G_WARN_ALL_OFF;
1800 PL_compiling.cop_warnings = WARN_NONE ;
1805 if (s[1] == '-') /* Additional switches on #! line. */
1810 #if defined(WIN32) || !defined(PERL_STRICT_CR)
1816 #ifdef ALTERNATE_SHEBANG
1817 case 'S': /* OS/2 needs -S on "extproc" line. */
1825 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
1830 /* compliments of Tom Christiansen */
1832 /* unexec() can be found in the Gnu emacs distribution */
1833 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
1836 Perl_my_unexec(pTHX)
1844 prog = newSVpv(BIN_EXP, 0);
1845 sv_catpv(prog, "/perl");
1846 file = newSVpv(PL_origfilename, 0);
1847 sv_catpv(file, ".perldump");
1849 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
1850 /* unexec prints msg to stderr in case of failure */
1851 PerlProc_exit(status);
1854 # include <lib$routines.h>
1855 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
1857 ABORT(); /* for use with undump */
1862 /* initialize curinterp */
1867 #ifdef PERL_OBJECT /* XXX kludge */
1870 PL_chopset = " \n-"; \
1871 PL_copline = NOLINE; \
1872 PL_curcop = &PL_compiling;\
1873 PL_curcopdb = NULL; \
1876 PL_dumpindent = 4; \
1877 PL_laststatval = -1; \
1878 PL_laststype = OP_STAT; \
1879 PL_maxscream = -1; \
1880 PL_maxsysfd = MAXSYSFD; \
1881 PL_statname = Nullsv; \
1882 PL_tmps_floor = -1; \
1884 PL_op_mask = NULL; \
1886 PL_laststatval = -1; \
1887 PL_laststype = OP_STAT; \
1888 PL_mess_sv = Nullsv; \
1889 PL_splitstr = " "; \
1890 PL_generation = 100; \
1891 PL_exitlist = NULL; \
1892 PL_exitlistlen = 0; \
1894 PL_in_clean_objs = FALSE; \
1895 PL_in_clean_all = FALSE; \
1896 PL_profiledata = NULL; \
1898 PL_rsfp_filters = Nullav; \
1903 # ifdef MULTIPLICITY
1904 # define PERLVAR(var,type)
1905 # if defined(PERL_IMPLICIT_CONTEXT)
1906 # define PERLVARI(var,type,init) my_perl->var = init;
1907 # define PERLVARIC(var,type,init) my_perl->var = init;
1909 # define PERLVARI(var,type,init) PL_curinterp->var = init;
1910 # define PERLVARIC(var,type,init) PL_curinterp->var = init;
1912 # include "intrpvar.h"
1913 # ifndef USE_THREADS
1914 # include "thrdvar.h"
1920 # define PERLVAR(var,type)
1921 # define PERLVARI(var,type,init) PL_##var = init;
1922 # define PERLVARIC(var,type,init) PL_##var = init;
1923 # include "intrpvar.h"
1924 # ifndef USE_THREADS
1925 # include "thrdvar.h"
1936 S_init_main_stash(pTHX)
1941 /* Note that strtab is a rather special HV. Assumptions are made
1942 about not iterating on it, and not adding tie magic to it.
1943 It is properly deallocated in perl_destruct() */
1944 PL_strtab = newHV();
1946 MUTEX_INIT(&PL_strtab_mutex);
1948 HvSHAREKEYS_off(PL_strtab); /* mandatory */
1949 hv_ksplit(PL_strtab, 512);
1951 PL_curstash = PL_defstash = newHV();
1952 PL_curstname = newSVpvn("main",4);
1953 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
1954 SvREFCNT_dec(GvHV(gv));
1955 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
1957 HvNAME(PL_defstash) = savepv("main");
1958 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
1959 GvMULTI_on(PL_incgv);
1960 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
1961 GvMULTI_on(PL_hintgv);
1962 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
1963 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
1964 GvMULTI_on(PL_errgv);
1965 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
1966 GvMULTI_on(PL_replgv);
1967 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
1968 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
1969 sv_setpvn(ERRSV, "", 0);
1970 PL_curstash = PL_defstash;
1971 PL_compiling.cop_stash = PL_defstash;
1972 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
1973 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
1974 /* We must init $/ before switches are processed. */
1975 sv_setpvn(get_sv("/", TRUE), "\n", 1);
1979 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
1987 PL_origfilename = savepv("-e");
1990 /* if find_script() returns, it returns a malloc()-ed value */
1991 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
1993 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
1994 char *s = scriptname + 8;
1995 *fdscript = atoi(s);
1999 scriptname = savepv(s + 1);
2000 Safefree(PL_origfilename);
2001 PL_origfilename = scriptname;
2006 PL_curcop->cop_filegv = gv_fetchfile(PL_origfilename);
2007 if (strEQ(PL_origfilename,"-"))
2009 if (*fdscript >= 0) {
2010 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2011 #if defined(HAS_FCNTL) && defined(F_SETFD)
2013 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2016 else if (PL_preprocess) {
2017 char *cpp_cfg = CPPSTDIN;
2018 SV *cpp = newSVpvn("",0);
2019 SV *cmd = NEWSV(0,0);
2021 if (strEQ(cpp_cfg, "cppstdin"))
2022 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2023 sv_catpv(cpp, cpp_cfg);
2026 sv_catpv(sv,PRIVLIB_EXP);
2029 Perl_sv_setpvf(aTHX_ cmd, "\
2030 sed %s -e \"/^[^#]/b\" \
2031 -e \"/^#[ ]*include[ ]/b\" \
2032 -e \"/^#[ ]*define[ ]/b\" \
2033 -e \"/^#[ ]*if[ ]/b\" \
2034 -e \"/^#[ ]*ifdef[ ]/b\" \
2035 -e \"/^#[ ]*ifndef[ ]/b\" \
2036 -e \"/^#[ ]*else/b\" \
2037 -e \"/^#[ ]*elif[ ]/b\" \
2038 -e \"/^#[ ]*undef[ ]/b\" \
2039 -e \"/^#[ ]*endif/b\" \
2042 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2045 Perl_sv_setpvf(aTHX_ cmd, "\
2046 %s %s -e '/^[^#]/b' \
2047 -e '/^#[ ]*include[ ]/b' \
2048 -e '/^#[ ]*define[ ]/b' \
2049 -e '/^#[ ]*if[ ]/b' \
2050 -e '/^#[ ]*ifdef[ ]/b' \
2051 -e '/^#[ ]*ifndef[ ]/b' \
2052 -e '/^#[ ]*else/b' \
2053 -e '/^#[ ]*elif[ ]/b' \
2054 -e '/^#[ ]*undef[ ]/b' \
2055 -e '/^#[ ]*endif/b' \
2059 Perl_sv_setpvf(aTHX_ cmd, "\
2060 %s %s -e '/^[^#]/b' \
2061 -e '/^#[ ]*include[ ]/b' \
2062 -e '/^#[ ]*define[ ]/b' \
2063 -e '/^#[ ]*if[ ]/b' \
2064 -e '/^#[ ]*ifdef[ ]/b' \
2065 -e '/^#[ ]*ifndef[ ]/b' \
2066 -e '/^#[ ]*else/b' \
2067 -e '/^#[ ]*elif[ ]/b' \
2068 -e '/^#[ ]*undef[ ]/b' \
2069 -e '/^#[ ]*endif/b' \
2078 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2080 scriptname, cpp, sv, CPPMINUS);
2081 PL_doextract = FALSE;
2082 #ifdef IAMSUID /* actually, this is caught earlier */
2083 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2085 (void)seteuid(PL_uid); /* musn't stay setuid root */
2088 (void)setreuid((Uid_t)-1, PL_uid);
2090 #ifdef HAS_SETRESUID
2091 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2093 PerlProc_setuid(PL_uid);
2097 if (PerlProc_geteuid() != PL_uid)
2098 Perl_croak(aTHX_ "Can't do seteuid!\n");
2100 #endif /* IAMSUID */
2101 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2105 else if (!*scriptname) {
2106 forbid_setid("program input from stdin");
2107 PL_rsfp = PerlIO_stdin();
2110 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2111 #if defined(HAS_FCNTL) && defined(F_SETFD)
2113 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2118 #ifndef IAMSUID /* in case script is not readable before setuid */
2120 PerlLIO_stat(SvPVX(GvSV(PL_curcop->cop_filegv)),&PL_statbuf) >= 0 &&
2121 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2124 PerlProc_execv(Perl_form(aTHX_ "%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv);
2125 Perl_croak(aTHX_ "Can't do setuid\n");
2129 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2130 SvPVX(GvSV(PL_curcop->cop_filegv)), Strerror(errno));
2135 * I_SYSSTATVFS HAS_FSTATVFS
2137 * I_STATFS HAS_FSTATFS
2138 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2139 * here so that metaconfig picks them up. */
2143 S_fd_on_nosuid_fs(pTHX_ int fd)
2148 * Preferred order: fstatvfs(), fstatfs(), getmntent().
2149 * fstatvfs() is UNIX98.
2151 * getmntent() is O(number-of-mounted-filesystems) and can hang.
2154 # ifdef HAS_FSTATVFS
2155 struct statvfs stfs;
2156 check_okay = fstatvfs(fd, &stfs) == 0;
2157 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2159 # if defined(HAS_FSTATFS) && defined(HAS_STRUCT_STATFS_FLAGS)
2161 check_okay = fstatfs(fd, &stfs) == 0;
2162 # undef PERL_MOUNT_NOSUID
2163 # if !defined(PERL_MOUNT_NOSUID) && defined(MNT_NOSUID)
2164 # define PERL_MOUNT_NOSUID MNT_NOSUID
2166 # if !defined(PERL_MOUNT_NOSUID) && defined(MS_NOSUID)
2167 # define PERL_MOUNT_NOSUID MS_NOSUID
2169 # if !defined(PERL_MOUNT_NOSUID) && defined(M_NOSUID)
2170 # define PERL_MOUNT_NOSUID M_NOSUID
2172 # ifdef PERL_MOUNT_NOSUID
2173 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2176 # if defined(HAS_GETMNTENT) && defined(HAS_HASMNTOPT) && defined(MNTOPT_NOSUID)
2177 FILE *mtab = fopen("/etc/mtab", "r");
2178 struct mntent *entry;
2179 struct stat stb, fsb;
2181 if (mtab && (fstat(fd, &stb) == 0)) {
2182 while (entry = getmntent(mtab)) {
2183 if (stat(entry->mnt_dir, &fsb) == 0
2184 && fsb.st_dev == stb.st_dev)
2186 /* found the filesystem */
2188 if (hasmntopt(entry, MNTOPT_NOSUID))
2191 } /* A single fs may well fail its stat(). */
2196 # endif /* mntent */
2197 # endif /* statfs */
2198 # endif /* statvfs */
2200 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\"", PL_origfilename);
2203 #endif /* IAMSUID */
2206 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2210 /* do we need to emulate setuid on scripts? */
2212 /* This code is for those BSD systems that have setuid #! scripts disabled
2213 * in the kernel because of a security problem. Merely defining DOSUID
2214 * in perl will not fix that problem, but if you have disabled setuid
2215 * scripts in the kernel, this will attempt to emulate setuid and setgid
2216 * on scripts that have those now-otherwise-useless bits set. The setuid
2217 * root version must be called suidperl or sperlN.NNN. If regular perl
2218 * discovers that it has opened a setuid script, it calls suidperl with
2219 * the same argv that it had. If suidperl finds that the script it has
2220 * just opened is NOT setuid root, it sets the effective uid back to the
2221 * uid. We don't just make perl setuid root because that loses the
2222 * effective uid we had before invoking perl, if it was different from the
2225 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2226 * be defined in suidperl only. suidperl must be setuid root. The
2227 * Configure script will set this up for you if you want it.
2234 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2235 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2236 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2241 #ifndef HAS_SETREUID
2242 /* On this access check to make sure the directories are readable,
2243 * there is actually a small window that the user could use to make
2244 * filename point to an accessible directory. So there is a faint
2245 * chance that someone could execute a setuid script down in a
2246 * non-accessible directory. I don't know what to do about that.
2247 * But I don't think it's too important. The manual lies when
2248 * it says access() is useful in setuid programs.
2250 if (PerlLIO_access(SvPVX(GvSV(PL_curcop->cop_filegv)),1)) /*double check*/
2251 Perl_croak(aTHX_ "Permission denied");
2253 /* If we can swap euid and uid, then we can determine access rights
2254 * with a simple stat of the file, and then compare device and
2255 * inode to make sure we did stat() on the same file we opened.
2256 * Then we just have to make sure he or she can execute it.
2259 struct stat tmpstatbuf;
2263 setreuid(PL_euid,PL_uid) < 0
2266 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2269 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2270 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2271 if (PerlLIO_stat(SvPVX(GvSV(PL_curcop->cop_filegv)),&tmpstatbuf) < 0)
2272 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2273 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2274 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2275 Perl_croak(aTHX_ "Permission denied");
2277 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2278 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2279 (void)PerlIO_close(PL_rsfp);
2280 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2281 PerlIO_printf(PL_rsfp,
2282 "User %ld tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2283 (Filename of set-id script was %s, uid %ld gid %ld.)\n\nSincerely,\nperl\n",
2284 (long)PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2285 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
2286 SvPVX(GvSV(PL_curcop->cop_filegv)),
2287 (long)PL_statbuf.st_uid, (long)PL_statbuf.st_gid);
2288 (void)PerlProc_pclose(PL_rsfp);
2290 Perl_croak(aTHX_ "Permission denied\n");
2294 setreuid(PL_uid,PL_euid) < 0
2296 # if defined(HAS_SETRESUID)
2297 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2300 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2301 Perl_croak(aTHX_ "Can't reswap uid and euid");
2302 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2303 Perl_croak(aTHX_ "Permission denied\n");
2305 #endif /* HAS_SETREUID */
2306 #endif /* IAMSUID */
2308 if (!S_ISREG(PL_statbuf.st_mode))
2309 Perl_croak(aTHX_ "Permission denied");
2310 if (PL_statbuf.st_mode & S_IWOTH)
2311 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2312 PL_doswitches = FALSE; /* -s is insecure in suid */
2313 PL_curcop->cop_line++;
2314 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2315 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2316 Perl_croak(aTHX_ "No #! line");
2317 s = SvPV(PL_linestr,n_a)+2;
2319 while (!isSPACE(*s)) s++;
2320 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2321 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2322 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2323 Perl_croak(aTHX_ "Not a perl script");
2324 while (*s == ' ' || *s == '\t') s++;
2326 * #! arg must be what we saw above. They can invoke it by
2327 * mentioning suidperl explicitly, but they may not add any strange
2328 * arguments beyond what #! says if they do invoke suidperl that way.
2330 len = strlen(validarg);
2331 if (strEQ(validarg," PHOOEY ") ||
2332 strnNE(s,validarg,len) || !isSPACE(s[len]))
2333 Perl_croak(aTHX_ "Args must match #! line");
2336 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2337 PL_euid == PL_statbuf.st_uid)
2339 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2340 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2341 #endif /* IAMSUID */
2343 if (PL_euid) { /* oops, we're not the setuid root perl */
2344 (void)PerlIO_close(PL_rsfp);
2347 PerlProc_execv(Perl_form(aTHX_ "%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv);
2349 Perl_croak(aTHX_ "Can't do setuid\n");
2352 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2354 (void)setegid(PL_statbuf.st_gid);
2357 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2359 #ifdef HAS_SETRESGID
2360 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2362 PerlProc_setgid(PL_statbuf.st_gid);
2366 if (PerlProc_getegid() != PL_statbuf.st_gid)
2367 Perl_croak(aTHX_ "Can't do setegid!\n");
2369 if (PL_statbuf.st_mode & S_ISUID) {
2370 if (PL_statbuf.st_uid != PL_euid)
2372 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2375 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2377 #ifdef HAS_SETRESUID
2378 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2380 PerlProc_setuid(PL_statbuf.st_uid);
2384 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2385 Perl_croak(aTHX_ "Can't do seteuid!\n");
2387 else if (PL_uid) { /* oops, mustn't run as root */
2389 (void)seteuid((Uid_t)PL_uid);
2392 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2394 #ifdef HAS_SETRESUID
2395 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2397 PerlProc_setuid((Uid_t)PL_uid);
2401 if (PerlProc_geteuid() != PL_uid)
2402 Perl_croak(aTHX_ "Can't do seteuid!\n");
2405 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2406 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
2409 else if (PL_preprocess)
2410 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
2411 else if (fdscript >= 0)
2412 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
2414 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
2416 /* We absolutely must clear out any saved ids here, so we */
2417 /* exec the real perl, substituting fd script for scriptname. */
2418 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2419 PerlIO_rewind(PL_rsfp);
2420 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2421 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2422 if (!PL_origargv[which])
2423 Perl_croak(aTHX_ "Permission denied");
2424 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
2425 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
2426 #if defined(HAS_FCNTL) && defined(F_SETFD)
2427 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
2429 PerlProc_execv(Perl_form(aTHX_ "%s/perl%s", BIN_EXP, PL_patchlevel), PL_origargv);/* try again */
2430 Perl_croak(aTHX_ "Can't do setuid\n");
2431 #endif /* IAMSUID */
2433 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
2434 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
2436 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
2437 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
2439 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
2442 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2443 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2444 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
2445 /* not set-id, must be wrapped */
2451 S_find_beginning(pTHX)
2453 register char *s, *s2;
2455 /* skip forward in input to the real script? */
2458 while (PL_doextract) {
2459 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
2460 Perl_croak(aTHX_ "No Perl script found in input\n");
2461 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
2462 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
2463 PL_doextract = FALSE;
2464 while (*s && !(isSPACE (*s) || *s == '#')) s++;
2466 while (*s == ' ' || *s == '\t') s++;
2468 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
2469 if (strnEQ(s2-4,"perl",4))
2471 while (s = moreswitches(s)) ;
2473 if (PL_cddir && PerlDir_chdir(PL_cddir) < 0)
2474 Perl_croak(aTHX_ "Can't chdir to %s",PL_cddir);
2483 PL_uid = (int)PerlProc_getuid();
2484 PL_euid = (int)PerlProc_geteuid();
2485 PL_gid = (int)PerlProc_getgid();
2486 PL_egid = (int)PerlProc_getegid();
2488 PL_uid |= PL_gid << 16;
2489 PL_euid |= PL_egid << 16;
2491 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
2495 S_forbid_setid(pTHX_ char *s)
2497 if (PL_euid != PL_uid)
2498 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
2499 if (PL_egid != PL_gid)
2500 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
2504 S_init_debugger(pTHX)
2507 PL_curstash = PL_debstash;
2508 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
2509 AvREAL_off(PL_dbargs);
2510 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
2511 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
2512 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
2513 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
2514 sv_setiv(PL_DBsingle, 0);
2515 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
2516 sv_setiv(PL_DBtrace, 0);
2517 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
2518 sv_setiv(PL_DBsignal, 0);
2519 PL_curstash = PL_defstash;
2522 #ifndef STRESS_REALLOC
2523 #define REASONABLE(size) (size)
2525 #define REASONABLE(size) (1) /* unreasonable */
2529 Perl_init_stacks(pTHX)
2531 /* start with 128-item stack and 8K cxstack */
2532 PL_curstackinfo = new_stackinfo(REASONABLE(128),
2533 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
2534 PL_curstackinfo->si_type = PERLSI_MAIN;
2535 PL_curstack = PL_curstackinfo->si_stack;
2536 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
2538 PL_stack_base = AvARRAY(PL_curstack);
2539 PL_stack_sp = PL_stack_base;
2540 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
2542 New(50,PL_tmps_stack,REASONABLE(128),SV*);
2545 PL_tmps_max = REASONABLE(128);
2547 New(54,PL_markstack,REASONABLE(32),I32);
2548 PL_markstack_ptr = PL_markstack;
2549 PL_markstack_max = PL_markstack + REASONABLE(32);
2553 New(54,PL_scopestack,REASONABLE(32),I32);
2554 PL_scopestack_ix = 0;
2555 PL_scopestack_max = REASONABLE(32);
2557 New(54,PL_savestack,REASONABLE(128),ANY);
2558 PL_savestack_ix = 0;
2559 PL_savestack_max = REASONABLE(128);
2561 New(54,PL_retstack,REASONABLE(16),OP*);
2563 PL_retstack_max = REASONABLE(16);
2572 while (PL_curstackinfo->si_next)
2573 PL_curstackinfo = PL_curstackinfo->si_next;
2574 while (PL_curstackinfo) {
2575 PERL_SI *p = PL_curstackinfo->si_prev;
2576 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
2577 Safefree(PL_curstackinfo->si_cxstack);
2578 Safefree(PL_curstackinfo);
2579 PL_curstackinfo = p;
2581 Safefree(PL_tmps_stack);
2582 Safefree(PL_markstack);
2583 Safefree(PL_scopestack);
2584 Safefree(PL_savestack);
2585 Safefree(PL_retstack);
2587 Safefree(PL_debname);
2588 Safefree(PL_debdelim);
2593 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
2604 lex_start(PL_linestr);
2606 PL_subname = newSVpvn("main",4);
2610 S_init_predump_symbols(pTHX)
2617 sv_setpvn(get_sv("\"", TRUE), " ", 1);
2618 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
2619 GvMULTI_on(PL_stdingv);
2620 io = GvIOp(PL_stdingv);
2621 IoIFP(io) = PerlIO_stdin();
2622 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
2624 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
2626 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
2629 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
2631 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
2633 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
2635 othergv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
2636 GvMULTI_on(othergv);
2637 io = GvIOp(othergv);
2638 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
2639 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
2641 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
2643 PL_statname = NEWSV(66,0); /* last filename we did stat on */
2646 PL_osname = savepv(OSNAME);
2650 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
2657 argc--,argv++; /* skip name of script */
2658 if (PL_doswitches) {
2659 for (; argc > 0 && **argv == '-'; argc--,argv++) {
2662 if (argv[0][1] == '-') {
2666 if (s = strchr(argv[0], '=')) {
2668 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
2671 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
2674 PL_toptarget = NEWSV(0,0);
2675 sv_upgrade(PL_toptarget, SVt_PVFM);
2676 sv_setpvn(PL_toptarget, "", 0);
2677 PL_bodytarget = NEWSV(0,0);
2678 sv_upgrade(PL_bodytarget, SVt_PVFM);
2679 sv_setpvn(PL_bodytarget, "", 0);
2680 PL_formtarget = PL_bodytarget;
2683 if (tmpgv = gv_fetchpv("0",TRUE, SVt_PV)) {
2684 sv_setpv(GvSV(tmpgv),PL_origfilename);
2685 magicname("0", "0", 1);
2687 if (tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))
2688 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
2689 if (PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV)) {
2690 GvMULTI_on(PL_argvgv);
2691 (void)gv_AVadd(PL_argvgv);
2692 av_clear(GvAVn(PL_argvgv));
2693 for (; argc > 0; argc--,argv++) {
2694 av_push(GvAVn(PL_argvgv),newSVpv(argv[0],0));
2697 if (PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV)) {
2699 GvMULTI_on(PL_envgv);
2700 hv = GvHVn(PL_envgv);
2701 hv_magic(hv, PL_envgv, 'E');
2702 #if !defined( VMS) && !defined(EPOC) /* VMS doesn't have environ array */
2703 /* Note that if the supplied env parameter is actually a copy
2704 of the global environ then it may now point to free'd memory
2705 if the environment has been modified since. To avoid this
2706 problem we treat env==NULL as meaning 'use the default'
2711 environ[0] = Nullch;
2712 for (; *env; env++) {
2713 if (!(s = strchr(*env,'=')))
2719 sv = newSVpv(s--,0);
2720 (void)hv_store(hv, *env, s - *env, sv, 0);
2722 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
2723 /* Sins of the RTL. See note in my_setenv(). */
2724 (void)PerlEnv_putenv(savepv(*env));
2728 #ifdef DYNAMIC_ENV_FETCH
2729 HvNAME(hv) = savepv(ENV_HV_NAME);
2733 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
2734 sv_setiv(GvSV(tmpgv), (IV)getpid());
2738 S_init_perllib(pTHX)
2743 s = PerlEnv_getenv("PERL5LIB");
2747 incpush(PerlEnv_getenv("PERLLIB"), FALSE);
2749 /* Treat PERL5?LIB as a possible search list logical name -- the
2750 * "natural" VMS idiom for a Unix path string. We allow each
2751 * element to be a set of |-separated directories for compatibility.
2755 if (my_trnlnm("PERL5LIB",buf,0))
2756 do { incpush(buf,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
2758 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE);
2762 /* Use the ~-expanded versions of APPLLIB (undocumented),
2763 ARCHLIB PRIVLIB SITEARCH and SITELIB
2766 incpush(APPLLIB_EXP, TRUE);
2770 incpush(ARCHLIB_EXP, FALSE);
2773 #define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
2776 incpush(PRIVLIB_EXP, TRUE);
2778 incpush(PRIVLIB_EXP, FALSE);
2782 incpush(SITEARCH_EXP, FALSE);
2786 incpush(SITELIB_EXP, TRUE);
2788 incpush(SITELIB_EXP, FALSE);
2792 incpush(".", FALSE);
2796 # define PERLLIB_SEP ';'
2799 # define PERLLIB_SEP '|'
2801 # define PERLLIB_SEP ':'
2804 #ifndef PERLLIB_MANGLE
2805 # define PERLLIB_MANGLE(s,n) (s)
2809 S_incpush(pTHX_ char *p, int addsubdirs)
2811 SV *subdir = Nullsv;
2817 subdir = sv_newmortal();
2818 if (!PL_archpat_auto) {
2819 STRLEN len = (sizeof(ARCHNAME) + strlen(PL_patchlevel)
2820 + sizeof("//auto"));
2821 New(55, PL_archpat_auto, len, char);
2822 sprintf(PL_archpat_auto, "/%s/%s/auto", ARCHNAME, PL_patchlevel);
2824 for (len = sizeof(ARCHNAME) + 2;
2825 PL_archpat_auto[len] != '\0' && PL_archpat_auto[len] != '/'; len++)
2826 if (PL_archpat_auto[len] == '.') PL_archpat_auto[len] = '_';
2831 /* Break at all separators */
2833 SV *libdir = NEWSV(55,0);
2836 /* skip any consecutive separators */
2837 while ( *p == PERLLIB_SEP ) {
2838 /* Uncomment the next line for PATH semantics */
2839 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
2843 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
2844 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
2849 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
2850 p = Nullch; /* break out */
2854 * BEFORE pushing libdir onto @INC we may first push version- and
2855 * archname-specific sub-directories.
2858 struct stat tmpstatbuf;
2863 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
2865 while (unix[len-1] == '/') len--; /* Cosmetic */
2866 sv_usepvn(libdir,unix,len);
2869 PerlIO_printf(PerlIO_stderr(),
2870 "Failed to unixify @INC element \"%s\"\n",
2873 /* .../archname/version if -d .../archname/version/auto */
2874 sv_setsv(subdir, libdir);
2875 sv_catpv(subdir, PL_archpat_auto);
2876 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2877 S_ISDIR(tmpstatbuf.st_mode))
2878 av_push(GvAVn(PL_incgv),
2879 newSVpvn(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2881 /* .../archname if -d .../archname/auto */
2882 sv_insert(subdir, SvCUR(libdir) + sizeof(ARCHNAME),
2883 strlen(PL_patchlevel) + 1, "", 0);
2884 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2885 S_ISDIR(tmpstatbuf.st_mode))
2886 av_push(GvAVn(PL_incgv),
2887 newSVpvn(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2890 /* finally push this lib directory on the end of @INC */
2891 av_push(GvAVn(PL_incgv), libdir);
2896 STATIC struct perl_thread *
2897 S_init_main_thread(pTHX)
2899 #ifndef PERL_IMPLICIT_CONTEXT
2900 struct perl_thread *thr;
2904 Newz(53, thr, 1, struct perl_thread);
2905 PL_curcop = &PL_compiling;
2906 thr->cvcache = newHV();
2907 thr->threadsv = newAV();
2908 /* thr->threadsvp is set when find_threadsv is called */
2909 thr->specific = newAV();
2910 thr->errhv = newHV();
2911 thr->flags = THRf_R_JOINABLE;
2912 MUTEX_INIT(&thr->mutex);
2913 /* Handcraft thrsv similarly to mess_sv */
2914 New(53, PL_thrsv, 1, SV);
2915 Newz(53, xpv, 1, XPV);
2916 SvFLAGS(PL_thrsv) = SVt_PV;
2917 SvANY(PL_thrsv) = (void*)xpv;
2918 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
2919 SvPVX(PL_thrsv) = (char*)thr;
2920 SvCUR_set(PL_thrsv, sizeof(thr));
2921 SvLEN_set(PL_thrsv, sizeof(thr));
2922 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
2923 thr->oursv = PL_thrsv;
2924 PL_chopset = " \n-";
2927 MUTEX_LOCK(&PL_threads_mutex);
2932 MUTEX_UNLOCK(&PL_threads_mutex);
2934 #ifdef HAVE_THREAD_INTERN
2935 Perl_init_thread_intern(thr);
2938 #ifdef SET_THREAD_SELF
2939 SET_THREAD_SELF(thr);
2941 thr->self = pthread_self();
2942 #endif /* SET_THREAD_SELF */
2946 * These must come after the SET_THR because sv_setpvn does
2947 * SvTAINT and the taint fields require dTHR.
2949 PL_toptarget = NEWSV(0,0);
2950 sv_upgrade(PL_toptarget, SVt_PVFM);
2951 sv_setpvn(PL_toptarget, "", 0);
2952 PL_bodytarget = NEWSV(0,0);
2953 sv_upgrade(PL_bodytarget, SVt_PVFM);
2954 sv_setpvn(PL_bodytarget, "", 0);
2955 PL_formtarget = PL_bodytarget;
2956 thr->errsv = newSVpvn("", 0);
2957 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
2960 PL_regcompp = FUNC_NAME_TO_PTR(Perl_pregcomp);
2961 PL_regexecp = FUNC_NAME_TO_PTR(Perl_regexec_flags);
2962 PL_regint_start = FUNC_NAME_TO_PTR(Perl_re_intuit_start);
2963 PL_regint_string = FUNC_NAME_TO_PTR(Perl_re_intuit_string);
2964 PL_regfree = FUNC_NAME_TO_PTR(Perl_pregfree);
2966 PL_reginterp_cnt = 0;
2970 #endif /* USE_THREADS */
2973 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
2977 line_t oldline = PL_curcop->cop_line;
2982 while (AvFILL(paramList) >= 0) {
2983 cv = (CV*)av_shift(paramList);
2985 CALLPROTECT(aTHX_ &ret, FUNC_NAME_TO_PTR(S_call_list_body), cv);
2988 (void)SvPV(atsv, len);
2990 PL_curcop = &PL_compiling;
2991 PL_curcop->cop_line = oldline;
2992 if (paramList == PL_beginav)
2993 sv_catpv(atsv, "BEGIN failed--compilation aborted");
2995 sv_catpv(atsv, "END failed--cleanup aborted");
2996 while (PL_scopestack_ix > oldscope)
2998 Perl_croak(aTHX_ "%s", SvPVX(atsv));
3005 /* my_exit() was called */
3006 while (PL_scopestack_ix > oldscope)
3009 PL_curstash = PL_defstash;
3011 call_list(oldscope, PL_endav);
3012 PL_curcop = &PL_compiling;
3013 PL_curcop->cop_line = oldline;
3014 if (PL_statusvalue) {
3015 if (paramList == PL_beginav)
3016 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3018 Perl_croak(aTHX_ "END failed--cleanup aborted");
3024 PL_curcop = &PL_compiling;
3025 PL_curcop->cop_line = oldline;
3028 PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
3036 S_call_list_body(pTHX_ va_list args)
3039 CV *cv = va_arg(args, CV*);
3041 PUSHMARK(PL_stack_sp);
3042 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3047 Perl_my_exit(pTHX_ U32 status)
3051 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3052 thr, (unsigned long) status));
3061 STATUS_NATIVE_SET(status);
3068 Perl_my_failure_exit(pTHX)
3071 if (vaxc$errno & 1) {
3072 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3073 STATUS_NATIVE_SET(44);
3076 if (!vaxc$errno && errno) /* unlikely */
3077 STATUS_NATIVE_SET(44);
3079 STATUS_NATIVE_SET(vaxc$errno);
3084 STATUS_POSIX_SET(errno);
3086 exitstatus = STATUS_POSIX >> 8;
3087 if (exitstatus & 255)
3088 STATUS_POSIX_SET(exitstatus);
3090 STATUS_POSIX_SET(255);
3097 S_my_exit_jump(pTHX)
3100 register PERL_CONTEXT *cx;
3105 SvREFCNT_dec(PL_e_script);
3106 PL_e_script = Nullsv;
3109 POPSTACK_TO(PL_mainstack);
3110 if (cxstack_ix >= 0) {
3113 POPBLOCK(cx,PL_curpm);
3122 #endif /* PERL_OBJECT */
3127 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3130 p = SvPVX(PL_e_script);
3131 nl = strchr(p, '\n');
3132 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3134 filter_del(read_e_script);
3137 sv_catpvn(buf_sv, p, nl-p);
3138 sv_chop(PL_e_script, nl);