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
17 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
22 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
23 char *getenv _((char *)); /* Usually in <stdlib.h> */
39 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
46 static I32 read_e_script _((CPerlObj* pPerl, int idx, SV *buf_sv, int maxlen));
48 static void find_beginning _((void));
49 static void forbid_setid _((char *));
50 static void incpush _((char *, int));
51 static void init_interp _((void));
52 static void init_ids _((void));
53 static void init_debugger _((void));
54 static void init_lexer _((void));
55 static void init_main_stash _((void));
57 static struct perl_thread * init_main_thread _((void));
58 #endif /* USE_THREADS */
59 static void init_perllib _((void));
60 static void init_postdump_symbols _((int, char **, char **));
61 static void init_predump_symbols _((void));
62 static void my_exit_jump _((void)) __attribute__((noreturn));
63 static void nuke_stacks _((void));
64 static void open_script _((char *, bool, SV *, int *fd));
65 static void usage _((char *));
67 static int fd_on_nosuid_fs _((int));
69 static void validate_suid _((char *, char*, int));
70 static I32 read_e_script _((int idx, SV *buf_sv, int maxlen));
74 CPerlObj* perl_alloc(IPerlMem* ipM, IPerlEnv* ipE, IPerlStdIO* ipStd,
75 IPerlLIO* ipLIO, IPerlDir* ipD, IPerlSock* ipS, IPerlProc* ipP)
77 CPerlObj* pPerl = new(ipM) CPerlObj(ipM, ipE, ipStd, ipLIO, ipD, ipS, ipP);
87 PerlInterpreter *sv_interp;
90 New(53, sv_interp, 1, PerlInterpreter);
93 #endif /* PERL_OBJECT */
99 perl_construct(register PerlInterpreter *sv_interp)
105 struct perl_thread *thr;
106 #endif /* FAKE_THREADS */
107 #endif /* USE_THREADS */
110 if (!(PL_curinterp = sv_interp))
116 Zero(sv_interp, 1, PerlInterpreter);
119 /* Init the real globals (and main thread)? */
124 #ifdef ALLOC_THREAD_KEY
127 if (pthread_key_create(&PL_thr_key, 0))
128 croak("panic: pthread_key_create");
130 MUTEX_INIT(&PL_sv_mutex);
132 * Safe to use basic SV functions from now on (though
133 * not things like mortals or tainting yet).
135 MUTEX_INIT(&PL_eval_mutex);
136 COND_INIT(&PL_eval_cond);
137 MUTEX_INIT(&PL_threads_mutex);
138 COND_INIT(&PL_nthreads_cond);
139 #ifdef EMULATE_ATOMIC_REFCOUNTS
140 MUTEX_INIT(&PL_svref_mutex);
141 #endif /* EMULATE_ATOMIC_REFCOUNTS */
143 MUTEX_INIT(&PL_cred_mutex);
145 thr = init_main_thread();
146 #endif /* USE_THREADS */
148 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
150 PL_linestr = NEWSV(65,79);
151 sv_upgrade(PL_linestr,SVt_PVIV);
153 if (!SvREADONLY(&PL_sv_undef)) {
154 /* set read-only and try to insure than we wont see REFCNT==0
157 SvREADONLY_on(&PL_sv_undef);
158 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
160 sv_setpv(&PL_sv_no,PL_No);
162 SvREADONLY_on(&PL_sv_no);
163 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
165 sv_setpv(&PL_sv_yes,PL_Yes);
167 SvREADONLY_on(&PL_sv_yes);
168 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
173 /* PL_sighandlerp = sighandler; */
175 PL_sighandlerp = sighandler;
177 PL_pidstatus = newHV();
181 * There is no way we can refer to them from Perl so close them to save
182 * space. The other alternative would be to provide STDAUX and STDPRN
185 (void)fclose(stdaux);
186 (void)fclose(stdprn);
190 PL_nrs = newSVpvn("\n", 1);
191 PL_rs = SvREFCNT_inc(PL_nrs);
196 PL_perl_destruct_level = 1;
198 if (PL_perl_destruct_level > 0)
203 PL_lex_state = LEX_NOTPARSING;
205 PL_start_env.je_prev = NULL;
206 PL_start_env.je_ret = -1;
207 PL_start_env.je_mustcatch = TRUE;
208 PL_top_env = &PL_start_env;
211 SET_NUMERIC_STANDARD();
212 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
213 sprintf(PL_patchlevel, "%7.5f", (double) PERL_REVISION
214 + ((double) PERL_VERSION / (double) 1000)
215 + ((double) PERL_SUBVERSION / (double) 100000));
217 sprintf(PL_patchlevel, "%5.3f", (double) PERL_REVISION +
218 ((double) PERL_VERSION / (double) 1000));
221 #if defined(LOCAL_PATCH_COUNT)
222 PL_localpatches = local_patches; /* For possible -v */
225 PerlIO_init(); /* Hook to IO system */
227 PL_fdpid = newAV(); /* for remembering popen pids by fd */
228 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
231 New(51,PL_debname,128,char);
232 New(52,PL_debdelim,128,char);
242 perl_destruct(register PerlInterpreter *sv_interp)
246 int destruct_level; /* 0=none, 1=full, 2=full with checks */
251 #endif /* USE_THREADS */
254 if (!(PL_curinterp = sv_interp))
260 /* Pass 1 on any remaining threads: detach joinables, join zombies */
262 MUTEX_LOCK(&PL_threads_mutex);
263 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
264 "perl_destruct: waiting for %d threads...\n",
266 for (t = thr->next; t != thr; t = t->next) {
267 MUTEX_LOCK(&t->mutex);
268 switch (ThrSTATE(t)) {
271 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
272 "perl_destruct: joining zombie %p\n", t));
273 ThrSETSTATE(t, THRf_DEAD);
274 MUTEX_UNLOCK(&t->mutex);
277 * The SvREFCNT_dec below may take a long time (e.g. av
278 * may contain an object scalar whose destructor gets
279 * called) so we have to unlock threads_mutex and start
282 MUTEX_UNLOCK(&PL_threads_mutex);
284 SvREFCNT_dec((SV*)av);
285 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
286 "perl_destruct: joined zombie %p OK\n", t));
288 case THRf_R_JOINABLE:
289 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
290 "perl_destruct: detaching thread %p\n", t));
291 ThrSETSTATE(t, THRf_R_DETACHED);
293 * We unlock threads_mutex and t->mutex in the opposite order
294 * from which we locked them just so that DETACH won't
295 * deadlock if it panics. It's only a breach of good style
296 * not a bug since they are unlocks not locks.
298 MUTEX_UNLOCK(&PL_threads_mutex);
300 MUTEX_UNLOCK(&t->mutex);
303 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
304 "perl_destruct: ignoring %p (state %u)\n",
306 MUTEX_UNLOCK(&t->mutex);
307 /* fall through and out */
310 /* We leave the above "Pass 1" loop with threads_mutex still locked */
312 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
313 while (PL_nthreads > 1)
315 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
316 "perl_destruct: final wait for %d threads\n",
318 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
320 /* At this point, we're the last thread */
321 MUTEX_UNLOCK(&PL_threads_mutex);
322 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "perl_destruct: armageddon has arrived\n"));
323 MUTEX_DESTROY(&PL_threads_mutex);
324 COND_DESTROY(&PL_nthreads_cond);
325 #endif /* !defined(FAKE_THREADS) */
326 #endif /* USE_THREADS */
328 destruct_level = PL_perl_destruct_level;
332 if (s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL")) {
334 if (destruct_level < i)
347 /* We must account for everything. */
349 /* Destroy the main CV and syntax tree */
351 PL_curpad = AvARRAY(PL_comppad);
352 op_free(PL_main_root);
353 PL_main_root = Nullop;
355 PL_curcop = &PL_compiling;
356 PL_main_start = Nullop;
357 SvREFCNT_dec(PL_main_cv);
361 if (PL_sv_objcount) {
363 * Try to destruct global references. We do this first so that the
364 * destructors and destructees still exist. Some sv's might remain.
365 * Non-referenced objects are on their own.
370 /* unhook hooks which will soon be, or use, destroyed data */
371 SvREFCNT_dec(PL_warnhook);
372 PL_warnhook = Nullsv;
373 SvREFCNT_dec(PL_diehook);
375 SvREFCNT_dec(PL_parsehook);
376 PL_parsehook = Nullsv;
378 /* call exit list functions */
379 while (PL_exitlistlen-- > 0)
380 PL_exitlist[PL_exitlistlen].fn(PERL_OBJECT_THIS_ PL_exitlist[PL_exitlistlen].ptr);
382 Safefree(PL_exitlist);
384 if (destruct_level == 0){
386 DEBUG_P(debprofdump());
388 /* The exit() function will do everything that needs doing. */
392 /* loosen bonds of global variables */
395 (void)PerlIO_close(PL_rsfp);
399 /* Filters for program text */
400 SvREFCNT_dec(PL_rsfp_filters);
401 PL_rsfp_filters = Nullav;
404 PL_preprocess = FALSE;
410 PL_doswitches = FALSE;
411 PL_dowarn = G_WARN_OFF;
412 PL_doextract = FALSE;
413 PL_sawampersand = FALSE; /* must save all match strings */
414 PL_sawstudy = FALSE; /* do fbm_instr on all strings */
418 Safefree(PL_inplace);
422 SvREFCNT_dec(PL_e_script);
423 PL_e_script = Nullsv;
426 /* magical thingies */
428 Safefree(PL_ofs); /* $, */
431 Safefree(PL_ors); /* $\ */
434 SvREFCNT_dec(PL_rs); /* $/ */
437 SvREFCNT_dec(PL_nrs); /* $/ helper */
440 PL_multiline = 0; /* $* */
442 SvREFCNT_dec(PL_statname);
443 PL_statname = Nullsv;
446 /* defgv, aka *_ should be taken care of elsewhere */
448 /* clean up after study() */
449 SvREFCNT_dec(PL_lastscream);
450 PL_lastscream = Nullsv;
451 Safefree(PL_screamfirst);
453 Safefree(PL_screamnext);
456 /* startup and shutdown function lists */
457 SvREFCNT_dec(PL_beginav);
458 SvREFCNT_dec(PL_endav);
459 SvREFCNT_dec(PL_initav);
464 /* shortcuts just get cleared */
471 PL_argvoutgv = Nullgv;
473 PL_last_in_gv = Nullgv;
476 /* reset so print() ends up where we expect */
479 /* Prepare to destruct main symbol table. */
486 if (destruct_level >= 2) {
487 if (PL_scopestack_ix != 0)
488 warn("Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
489 (long)PL_scopestack_ix);
490 if (PL_savestack_ix != 0)
491 warn("Unbalanced saves: %ld more saves than restores\n",
492 (long)PL_savestack_ix);
493 if (PL_tmps_floor != -1)
494 warn("Unbalanced tmps: %ld more allocs than frees\n",
495 (long)PL_tmps_floor + 1);
496 if (cxstack_ix != -1)
497 warn("Unbalanced context: %ld more PUSHes than POPs\n",
498 (long)cxstack_ix + 1);
501 /* Now absolutely destruct everything, somehow or other, loops or no. */
503 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
504 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
505 last_sv_count = PL_sv_count;
508 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
509 SvFLAGS(PL_strtab) |= SVt_PVHV;
511 /* Destruct the global string table. */
513 /* Yell and reset the HeVAL() slots that are still holding refcounts,
514 * so that sv_free() won't fail on them.
522 max = HvMAX(PL_strtab);
523 array = HvARRAY(PL_strtab);
527 warn("Unbalanced string table refcount: (%d) for \"%s\"",
528 HeVAL(hent) - Nullsv, HeKEY(hent));
529 HeVAL(hent) = Nullsv;
539 SvREFCNT_dec(PL_strtab);
541 if (PL_sv_count != 0)
542 warn("Scalars leaked: %ld\n", (long)PL_sv_count);
546 /* No SVs have survived, need to clean out */
548 PL_pidstatus = Nullhv;
549 Safefree(PL_origfilename);
550 Safefree(PL_archpat_auto);
551 Safefree(PL_reg_start_tmp);
553 Safefree(PL_reg_curpm);
554 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
555 Safefree(PL_op_mask);
557 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
559 DEBUG_P(debprofdump());
561 MUTEX_DESTROY(&PL_strtab_mutex);
562 MUTEX_DESTROY(&PL_sv_mutex);
563 MUTEX_DESTROY(&PL_eval_mutex);
564 MUTEX_DESTROY(&PL_cred_mutex);
565 COND_DESTROY(&PL_eval_cond);
566 #ifdef EMULATE_ATOMIC_REFCOUNTS
567 MUTEX_DESTROY(&PL_svref_mutex);
568 #endif /* EMULATE_ATOMIC_REFCOUNTS */
570 /* As the penultimate thing, free the non-arena SV for thrsv */
571 Safefree(SvPVX(PL_thrsv));
572 Safefree(SvANY(PL_thrsv));
575 #endif /* USE_THREADS */
577 /* As the absolutely last thing, free the non-arena SV for mess() */
580 /* it could have accumulated taint magic */
581 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
584 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
585 moremagic = mg->mg_moremagic;
586 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
587 Safefree(mg->mg_ptr);
591 /* we know that type >= SVt_PV */
592 SvOOK_off(PL_mess_sv);
593 Safefree(SvPVX(PL_mess_sv));
594 Safefree(SvANY(PL_mess_sv));
595 Safefree(PL_mess_sv);
604 perl_free(PerlInterpreter *sv_interp)
610 if (!(PL_curinterp = sv_interp))
618 perl_atexit(void (*fn) (CPerlObj*,void *), void *ptr)
620 perl_atexit(void (*fn) (void *), void *ptr)
623 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
624 PL_exitlist[PL_exitlistlen].fn = fn;
625 PL_exitlist[PL_exitlistlen].ptr = ptr;
631 perl_parse(void (*xsinit) (CPerlObj*), int argc, char **argv, char **env)
633 perl_parse(PerlInterpreter *sv_interp, void (*xsinit) (void), int argc, char **argv, char **env)
639 char *scriptname = NULL;
640 VOL bool dosearch = FALSE;
648 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
651 croak("suidperl is no longer needed since the kernel can now execute\n\
652 setuid perl scripts securely.\n");
657 if (!(PL_curinterp = sv_interp))
661 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
662 _dyld_lookup_and_bind
663 ("__environ", (unsigned long *) &environ_pointer, NULL);
668 #ifndef VMS /* VMS doesn't have environ array */
669 PL_origenviron = environ;
674 /* Come here if running an undumped a.out. */
676 PL_origfilename = savepv(argv[0]);
677 PL_do_undump = FALSE;
678 cxstack_ix = -1; /* start label stack again */
680 init_postdump_symbols(argc,argv,env);
685 PL_curpad = AvARRAY(PL_comppad);
686 op_free(PL_main_root);
687 PL_main_root = Nullop;
689 PL_main_start = Nullop;
690 SvREFCNT_dec(PL_main_cv);
694 oldscope = PL_scopestack_ix;
695 PL_dowarn = G_WARN_OFF;
703 /* my_exit() was called */
704 while (PL_scopestack_ix > oldscope)
707 PL_curstash = PL_defstash;
709 call_list(oldscope, PL_endav);
711 return STATUS_NATIVE_EXPORT;
714 PerlIO_printf(PerlIO_stderr(), "panic: top_env\n");
718 sv_setpvn(PL_linestr,"",0);
719 sv = newSVpvn("",0); /* first used for -I flags */
723 for (argc--,argv++; argc > 0; argc--,argv++) {
724 if (argv[0][0] != '-' || !argv[0][1])
728 validarg = " PHOOEY ";
735 #ifndef PERL_STRICT_CR
759 if (s = moreswitches(s))
769 if (PL_euid != PL_uid || PL_egid != PL_gid)
770 croak("No -e allowed in setuid scripts");
772 PL_e_script = newSVpvn("",0);
773 filter_add(read_e_script, NULL);
776 sv_catpv(PL_e_script, s);
778 sv_catpv(PL_e_script, argv[1]);
782 croak("No code specified for -e");
783 sv_catpv(PL_e_script, "\n");
786 case 'I': /* -I handled both here and in moreswitches() */
788 if (!*++s && (s=argv[1]) != Nullch) {
791 while (s && isSPACE(*s))
795 for (e = s; *e && !isSPACE(*e); e++) ;
802 } /* XXX else croak? */
806 PL_preprocess = TRUE;
816 PL_preambleav = newAV();
817 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
819 PL_Sv = newSVpv("print myconfig();",0);
821 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
823 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
825 #if defined(DEBUGGING) || defined(MULTIPLICITY)
826 sv_catpv(PL_Sv,"\" Compile-time options:");
828 sv_catpv(PL_Sv," DEBUGGING");
831 sv_catpv(PL_Sv," MULTIPLICITY");
833 sv_catpv(PL_Sv,"\\n\",");
835 #if defined(LOCAL_PATCH_COUNT)
836 if (LOCAL_PATCH_COUNT > 0) {
838 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
839 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
840 if (PL_localpatches[i])
841 sv_catpvf(PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
845 sv_catpvf(PL_Sv,"\" Built under %s\\n\"",OSNAME);
848 sv_catpvf(PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
850 sv_catpvf(PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
855 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
856 print \" \\%ENV:\\n @env\\n\" if @env; \
857 print \" \\@INC:\\n @INC\\n\";");
860 PL_Sv = newSVpv("config_vars(qw(",0);
861 sv_catpv(PL_Sv, ++s);
862 sv_catpv(PL_Sv, "))");
865 av_push(PL_preambleav, PL_Sv);
866 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
872 PL_cddir = savepv(s);
877 if (!*++s || isSPACE(*s)) {
881 /* catch use of gnu style long options */
882 if (strEQ(s, "version")) {
886 if (strEQ(s, "help")) {
893 croak("Unrecognized switch: -%s (-h will show valid options)",s);
899 #ifndef SECURE_INTERNAL_GETENV
902 (s = PerlEnv_getenv("PERL5OPT"))) {
905 if (*s == '-' && *(s+1) == 'T')
918 if (!strchr("DIMUdmw", *s))
919 croak("Illegal switch in PERL5OPT: -%c", *s);
926 scriptname = argv[0];
929 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
931 else if (scriptname == Nullch) {
933 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
941 open_script(scriptname,dosearch,sv,&fdscript);
943 validate_suid(validarg, scriptname,fdscript);
948 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
949 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
950 CvUNIQUE_on(PL_compcv);
952 PL_comppad = newAV();
953 av_push(PL_comppad, Nullsv);
954 PL_curpad = AvARRAY(PL_comppad);
955 PL_comppad_name = newAV();
956 PL_comppad_name_fill = 0;
957 PL_min_intro_pending = 0;
960 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
961 PL_curpad[0] = (SV*)newAV();
962 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
963 CvOWNER(PL_compcv) = 0;
964 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
965 MUTEX_INIT(CvMUTEXP(PL_compcv));
966 #endif /* USE_THREADS */
968 comppadlist = newAV();
969 AvREAL_off(comppadlist);
970 av_store(comppadlist, 0, (SV*)PL_comppad_name);
971 av_store(comppadlist, 1, (SV*)PL_comppad);
972 CvPADLIST(PL_compcv) = comppadlist;
974 boot_core_UNIVERSAL();
977 (*xsinit)(PERL_OBJECT_THIS); /* in case linked C routines want magical variables */
978 #if defined(VMS) || defined(WIN32) || defined(DJGPP)
982 init_predump_symbols();
983 /* init_postdump_symbols not currently designed to be called */
984 /* more than once (ENV isn't cleared first, for example) */
985 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
987 init_postdump_symbols(argc,argv,env);
991 /* now parse the script */
993 SETERRNO(0,SS$_NORMAL);
995 if (yyparse() || PL_error_count) {
997 croak("%s had compilation errors.\n", PL_origfilename);
999 croak("Execution of %s aborted due to compilation errors.\n",
1003 PL_curcop->cop_line = 0;
1004 PL_curstash = PL_defstash;
1005 PL_preprocess = FALSE;
1007 SvREFCNT_dec(PL_e_script);
1008 PL_e_script = Nullsv;
1011 /* now that script is parsed, we can modify record separator */
1012 SvREFCNT_dec(PL_rs);
1013 PL_rs = SvREFCNT_inc(PL_nrs);
1014 sv_setsv(perl_get_sv("/", TRUE), PL_rs);
1018 if (ckWARN(WARN_ONCE))
1019 gv_check(PL_defstash);
1025 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1026 dump_mstats("after compilation:");
1039 perl_run(PerlInterpreter *sv_interp)
1048 if (!(PL_curinterp = sv_interp))
1052 oldscope = PL_scopestack_ix;
1057 cxstack_ix = -1; /* start context stack again */
1060 /* my_exit() was called */
1061 while (PL_scopestack_ix > oldscope)
1064 PL_curstash = PL_defstash;
1066 call_list(oldscope, PL_endav);
1068 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1069 dump_mstats("after execution: ");
1072 return STATUS_NATIVE_EXPORT;
1074 if (!PL_restartop) {
1075 PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
1080 POPSTACK_TO(PL_mainstack);
1084 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1085 PL_sawampersand ? "Enabling" : "Omitting"));
1087 if (!PL_restartop) {
1088 DEBUG_x(dump_all());
1089 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1090 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%lx\n",
1091 (unsigned long) thr));
1094 PerlIO_printf(PerlIO_stderr(), "%s syntax OK\n", PL_origfilename);
1097 if (PERLDB_SINGLE && PL_DBsingle)
1098 sv_setiv(PL_DBsingle, 1);
1100 call_list(oldscope, PL_initav);
1106 PL_op = PL_restartop;
1110 else if (PL_main_start) {
1111 CvDEPTH(PL_main_cv) = 1;
1112 PL_op = PL_main_start;
1122 perl_get_sv(const char *name, I32 create)
1126 if (name[1] == '\0' && !isALPHA(name[0])) {
1127 PADOFFSET tmp = find_threadsv(name);
1128 if (tmp != NOT_IN_PAD) {
1130 return THREADSV(tmp);
1133 #endif /* USE_THREADS */
1134 gv = gv_fetchpv(name, create, SVt_PV);
1141 perl_get_av(const char *name, I32 create)
1143 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1152 perl_get_hv(const char *name, I32 create)
1154 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1163 perl_get_cv(const char *name, I32 create)
1165 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1166 /* XXX unsafe for threads if eval_owner isn't held */
1167 if (create && !GvCVu(gv))
1168 return newSUB(start_subparse(FALSE, 0),
1169 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1177 /* Be sure to refetch the stack pointer after calling these routines. */
1180 perl_call_argv(const char *sub_name, I32 flags, register char **argv)
1182 /* See G_* flags in cop.h */
1183 /* null terminated arg list */
1190 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1195 return perl_call_pv(sub_name, flags);
1199 perl_call_pv(const char *sub_name, I32 flags)
1200 /* name of the subroutine */
1201 /* See G_* flags in cop.h */
1203 return perl_call_sv((SV*)perl_get_cv(sub_name, TRUE), flags);
1207 perl_call_method(const char *methname, I32 flags)
1208 /* name of the subroutine */
1209 /* See G_* flags in cop.h */
1215 XPUSHs(sv_2mortal(newSVpv(methname,0)));
1220 return perl_call_sv(*PL_stack_sp--, flags);
1223 /* May be called with any of a CV, a GV, or an SV containing the name. */
1225 perl_call_sv(SV *sv, I32 flags)
1227 /* See G_* flags in cop.h */
1230 LOGOP myop; /* fake syntax tree node */
1234 bool oldcatch = CATCH_GET;
1239 if (flags & G_DISCARD) {
1244 Zero(&myop, 1, LOGOP);
1245 myop.op_next = Nullop;
1246 if (!(flags & G_NOARGS))
1247 myop.op_flags |= OPf_STACKED;
1248 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1249 (flags & G_ARRAY) ? OPf_WANT_LIST :
1254 EXTEND(PL_stack_sp, 1);
1255 *++PL_stack_sp = sv;
1257 oldscope = PL_scopestack_ix;
1259 if (PERLDB_SUB && PL_curstash != PL_debstash
1260 /* Handle first BEGIN of -d. */
1261 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1262 /* Try harder, since this may have been a sighandler, thus
1263 * curstash may be meaningless. */
1264 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1265 && !(flags & G_NODEBUG))
1266 PL_op->op_private |= OPpENTERSUB_DB;
1268 if (flags & G_EVAL) {
1269 cLOGOP->op_other = PL_op;
1271 /* we're trying to emulate pp_entertry() here */
1273 register PERL_CONTEXT *cx;
1274 I32 gimme = GIMME_V;
1279 push_return(PL_op->op_next);
1280 PUSHBLOCK(cx, CXt_EVAL, PL_stack_sp);
1282 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1285 if (flags & G_KEEPERR)
1300 /* my_exit() was called */
1301 PL_curstash = PL_defstash;
1305 croak("Callback called exit");
1310 PL_op = PL_restartop;
1314 PL_stack_sp = PL_stack_base + oldmark;
1315 if (flags & G_ARRAY)
1319 *++PL_stack_sp = &PL_sv_undef;
1327 if (PL_op == (OP*)&myop)
1328 PL_op = pp_entersub(ARGS);
1331 retval = PL_stack_sp - (PL_stack_base + oldmark);
1332 if ((flags & G_EVAL) && !(flags & G_KEEPERR))
1336 if (flags & G_EVAL) {
1337 if (PL_scopestack_ix > oldscope) {
1341 register PERL_CONTEXT *cx;
1353 CATCH_SET(oldcatch);
1355 if (flags & G_DISCARD) {
1356 PL_stack_sp = PL_stack_base + oldmark;
1365 /* Eval a string. The G_EVAL flag is always assumed. */
1368 perl_eval_sv(SV *sv, I32 flags)
1370 /* See G_* flags in cop.h */
1373 UNOP myop; /* fake syntax tree node */
1374 I32 oldmark = SP - PL_stack_base;
1381 if (flags & G_DISCARD) {
1388 Zero(PL_op, 1, UNOP);
1389 EXTEND(PL_stack_sp, 1);
1390 *++PL_stack_sp = sv;
1391 oldscope = PL_scopestack_ix;
1393 if (!(flags & G_NOARGS))
1394 myop.op_flags = OPf_STACKED;
1395 myop.op_next = Nullop;
1396 myop.op_type = OP_ENTEREVAL;
1397 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1398 (flags & G_ARRAY) ? OPf_WANT_LIST :
1400 if (flags & G_KEEPERR)
1401 myop.op_flags |= OPf_SPECIAL;
1411 /* my_exit() was called */
1412 PL_curstash = PL_defstash;
1416 croak("Callback called exit");
1421 PL_op = PL_restartop;
1425 PL_stack_sp = PL_stack_base + oldmark;
1426 if (flags & G_ARRAY)
1430 *++PL_stack_sp = &PL_sv_undef;
1435 if (PL_op == (OP*)&myop)
1436 PL_op = pp_entereval(ARGS);
1439 retval = PL_stack_sp - (PL_stack_base + oldmark);
1440 if (!(flags & G_KEEPERR))
1445 if (flags & G_DISCARD) {
1446 PL_stack_sp = PL_stack_base + oldmark;
1456 perl_eval_pv(const char *p, I32 croak_on_error)
1459 SV* sv = newSVpv(p, 0);
1462 perl_eval_sv(sv, G_SCALAR);
1469 if (croak_on_error && SvTRUE(ERRSV)) {
1471 croak(SvPVx(ERRSV, n_a));
1477 /* Require a module. */
1480 perl_require_pv(const char *pv)
1484 PUSHSTACKi(PERLSI_REQUIRE);
1486 sv = sv_newmortal();
1487 sv_setpv(sv, "require '");
1490 perl_eval_sv(sv, G_DISCARD);
1496 magicname(char *sym, char *name, I32 namlen)
1500 if (gv = gv_fetchpv(sym,TRUE, SVt_PV))
1501 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1505 usage(char *name) /* XXX move this out into a module ? */
1508 /* This message really ought to be max 23 lines.
1509 * Removed -h because the user already knows that opton. Others? */
1511 static char *usage_msg[] = {
1512 "-0[octal] specify record separator (\\0, if no argument)",
1513 "-a autosplit mode with -n or -p (splits $_ into @F)",
1514 "-c check syntax only (runs BEGIN and END blocks)",
1515 "-d[:debugger] run scripts under debugger",
1516 "-D[number/list] set debugging flags (argument is a bit mask or flags)",
1517 "-e 'command' one line of script. Several -e's allowed. Omit [programfile].",
1518 "-F/pattern/ split() pattern for autosplit (-a). The //'s are optional.",
1519 "-i[extension] edit <> files in place (make backup if extension supplied)",
1520 "-Idirectory specify @INC/#include directory (may be used more than once)",
1521 "-l[octal] enable line ending processing, specifies line terminator",
1522 "-[mM][-]module.. executes `use/no module...' before executing your script.",
1523 "-n assume 'while (<>) { ... }' loop around your script",
1524 "-p assume loop like -n but print line also like sed",
1525 "-P run script through C preprocessor before compilation",
1526 "-s enable some switch parsing for switches after script name",
1527 "-S look for the script using PATH environment variable",
1528 "-T turn on tainting checks",
1529 "-u dump core after parsing script",
1530 "-U allow unsafe operations",
1531 "-v print version number, patchlevel plus VERY IMPORTANT perl info",
1532 "-V[:variable] print perl configuration information",
1533 "-w TURN WARNINGS ON FOR COMPILATION OF YOUR SCRIPT. Recommended.",
1534 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
1538 char **p = usage_msg;
1540 printf("\nUsage: %s [switches] [--] [programfile] [arguments]", name);
1542 printf("\n %s", *p++);
1545 /* This routine handles any switches that can be given during run */
1548 moreswitches(char *s)
1557 rschar = scan_oct(s, 4, &numlen);
1558 SvREFCNT_dec(PL_nrs);
1559 if (rschar & ~((U8)~0))
1560 PL_nrs = &PL_sv_undef;
1561 else if (!rschar && numlen >= 2)
1562 PL_nrs = newSVpvn("", 0);
1565 PL_nrs = newSVpvn(&ch, 1);
1571 PL_splitstr = savepv(s + 1);
1585 if (*s == ':' || *s == '=') {
1586 my_setenv("PERL5DB", form("use Devel::%s;", ++s));
1590 PL_perldb = PERLDB_ALL;
1597 if (isALPHA(s[1])) {
1598 static char debopts[] = "psltocPmfrxuLHXDS";
1601 for (s++; *s && (d = strchr(debopts,*s)); s++)
1602 PL_debug |= 1 << (d - debopts);
1605 PL_debug = atoi(s+1);
1606 for (s++; isDIGIT(*s); s++) ;
1608 PL_debug |= 0x80000000;
1610 warn("Recompile perl with -DDEBUGGING to use -D switch\n");
1611 for (s++; isALNUM(*s); s++) ;
1616 usage(PL_origargv[0]);
1620 Safefree(PL_inplace);
1621 PL_inplace = savepv(s+1);
1623 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
1626 if (*s == '-') /* Additional switches on #! line. */
1630 case 'I': /* -I handled both here and in parse_perl() */
1633 while (*s && isSPACE(*s))
1637 for (e = s; *e && !isSPACE(*e); e++) ;
1638 p = savepvn(s, e-s);
1644 croak("No space allowed after -I");
1652 PL_ors = savepv("\n");
1654 *PL_ors = scan_oct(s, 3 + (*s == '0'), &numlen);
1659 if (RsPARA(PL_nrs)) {
1664 PL_ors = SvPV(PL_nrs, PL_orslen);
1665 PL_ors = savepvn(PL_ors, PL_orslen);
1669 forbid_setid("-M"); /* XXX ? */
1672 forbid_setid("-m"); /* XXX ? */
1677 /* -M-foo == 'no foo' */
1678 if (*s == '-') { use = "no "; ++s; }
1679 sv = newSVpv(use,0);
1681 /* We allow -M'Module qw(Foo Bar)' */
1682 while(isALNUM(*s) || *s==':') ++s;
1684 sv_catpv(sv, start);
1685 if (*(start-1) == 'm') {
1687 croak("Can't use '%c' after -mname", *s);
1688 sv_catpv( sv, " ()");
1691 sv_catpvn(sv, start, s-start);
1692 sv_catpv(sv, " split(/,/,q{");
1697 if (PL_preambleav == NULL)
1698 PL_preambleav = newAV();
1699 av_push(PL_preambleav, sv);
1702 croak("No space allowed after -%c", *(s-1));
1714 PL_doswitches = TRUE;
1719 croak("Too late for \"-T\" option");
1723 PL_do_undump = TRUE;
1731 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
1732 printf("\nThis is perl, version %d.%03d_%02d built for %s",
1733 PERL_REVISION, PERL_VERSION, PERL_SUBVERSION, ARCHNAME);
1735 printf("\nThis is perl, version %s built for %s",
1736 PL_patchlevel, ARCHNAME);
1738 #if defined(LOCAL_PATCH_COUNT)
1739 if (LOCAL_PATCH_COUNT > 0)
1740 printf("\n(with %d registered patch%s, see perl -V for more detail)",
1741 LOCAL_PATCH_COUNT, (LOCAL_PATCH_COUNT!=1) ? "es" : "");
1744 printf("\n\nCopyright 1987-1999, Larry Wall\n");
1746 printf("\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
1749 printf("djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n");
1750 printf("djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
1753 printf("\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
1754 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
1757 printf("atariST series port, ++jrb bammi@cadence.com\n");
1760 printf("BeOS port Copyright Tom Spindler, 1997-1999\n");
1763 printf("MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
1766 printf("MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
1769 printf("Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
1772 printf("VM/ESA port by Neale Ferguson, 1998-1999\n");
1775 printf("BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
1778 printf("MiNT port by Guido Flohr, 1997-1999\n");
1780 #ifdef BINARY_BUILD_NOTICE
1781 BINARY_BUILD_NOTICE;
1784 Perl may be copied only under the terms of either the Artistic License or the\n\
1785 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
1786 Complete documentation for Perl, including FAQ lists, should be found on\n\
1787 this system using `man perl' or `perldoc perl'. If you have access to the\n\
1788 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
1791 if (! (PL_dowarn & G_WARN_ALL_MASK))
1792 PL_dowarn |= G_WARN_ON;
1796 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
1797 PL_compiling.cop_warnings = WARN_ALL ;
1801 PL_dowarn = G_WARN_ALL_OFF;
1802 PL_compiling.cop_warnings = WARN_NONE ;
1807 if (s[1] == '-') /* Additional switches on #! line. */
1812 #if defined(WIN32) || !defined(PERL_STRICT_CR)
1818 #ifdef ALTERNATE_SHEBANG
1819 case 'S': /* OS/2 needs -S on "extproc" line. */
1827 croak("Can't emulate -%.1s on #! line",s);
1832 /* compliments of Tom Christiansen */
1834 /* unexec() can be found in the Gnu emacs distribution */
1835 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
1846 prog = newSVpv(BIN_EXP, 0);
1847 sv_catpv(prog, "/perl");
1848 file = newSVpv(PL_origfilename, 0);
1849 sv_catpv(file, ".perldump");
1851 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
1852 /* unexec prints msg to stderr in case of failure */
1853 PerlProc_exit(status);
1856 # include <lib$routines.h>
1857 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
1859 ABORT(); /* for use with undump */
1864 /* initialize curinterp */
1869 #ifdef PERL_OBJECT /* XXX kludge */
1872 PL_chopset = " \n-"; \
1873 PL_copline = NOLINE; \
1874 PL_curcop = &PL_compiling;\
1875 PL_curcopdb = NULL; \
1878 PL_dumpindent = 4; \
1879 PL_laststatval = -1; \
1880 PL_laststype = OP_STAT; \
1881 PL_maxscream = -1; \
1882 PL_maxsysfd = MAXSYSFD; \
1883 PL_statname = Nullsv; \
1884 PL_tmps_floor = -1; \
1886 PL_op_mask = NULL; \
1888 PL_laststatval = -1; \
1889 PL_laststype = OP_STAT; \
1890 PL_mess_sv = Nullsv; \
1891 PL_splitstr = " "; \
1892 PL_generation = 100; \
1893 PL_exitlist = NULL; \
1894 PL_exitlistlen = 0; \
1896 PL_in_clean_objs = FALSE; \
1897 PL_in_clean_all = FALSE; \
1898 PL_profiledata = NULL; \
1900 PL_rsfp_filters = Nullav; \
1905 # ifdef MULTIPLICITY
1906 # define PERLVAR(var,type)
1907 # define PERLVARI(var,type,init) PL_curinterp->var = init;
1908 # define PERLVARIC(var,type,init) PL_curinterp->var = init;
1909 # include "intrpvar.h"
1910 # ifndef USE_THREADS
1911 # include "thrdvar.h"
1917 # define PERLVAR(var,type)
1918 # define PERLVARI(var,type,init) PL_##var = init;
1919 # define PERLVARIC(var,type,init) PL_##var = init;
1920 # include "intrpvar.h"
1921 # ifndef USE_THREADS
1922 # include "thrdvar.h"
1933 init_main_stash(void)
1938 /* Note that strtab is a rather special HV. Assumptions are made
1939 about not iterating on it, and not adding tie magic to it.
1940 It is properly deallocated in perl_destruct() */
1941 PL_strtab = newHV();
1943 MUTEX_INIT(&PL_strtab_mutex);
1945 HvSHAREKEYS_off(PL_strtab); /* mandatory */
1946 hv_ksplit(PL_strtab, 512);
1948 PL_curstash = PL_defstash = newHV();
1949 PL_curstname = newSVpvn("main",4);
1950 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
1951 SvREFCNT_dec(GvHV(gv));
1952 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
1954 HvNAME(PL_defstash) = savepv("main");
1955 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
1956 GvMULTI_on(PL_incgv);
1957 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
1958 GvMULTI_on(PL_hintgv);
1959 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
1960 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
1961 GvMULTI_on(PL_errgv);
1962 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
1963 GvMULTI_on(PL_replgv);
1964 (void)form("%240s",""); /* Preallocate temp - for immediate signals. */
1965 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
1966 sv_setpvn(ERRSV, "", 0);
1967 PL_curstash = PL_defstash;
1968 PL_compiling.cop_stash = PL_defstash;
1969 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
1970 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
1971 /* We must init $/ before switches are processed. */
1972 sv_setpvn(perl_get_sv("/", TRUE), "\n", 1);
1976 open_script(char *scriptname, bool dosearch, SV *sv, int *fdscript)
1984 PL_origfilename = savepv("-e");
1987 /* if find_script() returns, it returns a malloc()-ed value */
1988 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
1990 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
1991 char *s = scriptname + 8;
1992 *fdscript = atoi(s);
1996 scriptname = savepv(s + 1);
1997 Safefree(PL_origfilename);
1998 PL_origfilename = scriptname;
2003 PL_curcop->cop_filegv = gv_fetchfile(PL_origfilename);
2004 if (strEQ(PL_origfilename,"-"))
2006 if (*fdscript >= 0) {
2007 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2008 #if defined(HAS_FCNTL) && defined(F_SETFD)
2010 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2013 else if (PL_preprocess) {
2014 char *cpp_cfg = CPPSTDIN;
2015 SV *cpp = newSVpvn("",0);
2016 SV *cmd = NEWSV(0,0);
2018 if (strEQ(cpp_cfg, "cppstdin"))
2019 sv_catpvf(cpp, "%s/", BIN_EXP);
2020 sv_catpv(cpp, cpp_cfg);
2023 sv_catpv(sv,PRIVLIB_EXP);
2027 sed %s -e \"/^[^#]/b\" \
2028 -e \"/^#[ ]*include[ ]/b\" \
2029 -e \"/^#[ ]*define[ ]/b\" \
2030 -e \"/^#[ ]*if[ ]/b\" \
2031 -e \"/^#[ ]*ifdef[ ]/b\" \
2032 -e \"/^#[ ]*ifndef[ ]/b\" \
2033 -e \"/^#[ ]*else/b\" \
2034 -e \"/^#[ ]*elif[ ]/b\" \
2035 -e \"/^#[ ]*undef[ ]/b\" \
2036 -e \"/^#[ ]*endif/b\" \
2039 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2043 %s %s -e '/^[^#]/b' \
2044 -e '/^#[ ]*include[ ]/b' \
2045 -e '/^#[ ]*define[ ]/b' \
2046 -e '/^#[ ]*if[ ]/b' \
2047 -e '/^#[ ]*ifdef[ ]/b' \
2048 -e '/^#[ ]*ifndef[ ]/b' \
2049 -e '/^#[ ]*else/b' \
2050 -e '/^#[ ]*elif[ ]/b' \
2051 -e '/^#[ ]*undef[ ]/b' \
2052 -e '/^#[ ]*endif/b' \
2057 %s %s -e '/^[^#]/b' \
2058 -e '/^#[ ]*include[ ]/b' \
2059 -e '/^#[ ]*define[ ]/b' \
2060 -e '/^#[ ]*if[ ]/b' \
2061 -e '/^#[ ]*ifdef[ ]/b' \
2062 -e '/^#[ ]*ifndef[ ]/b' \
2063 -e '/^#[ ]*else/b' \
2064 -e '/^#[ ]*elif[ ]/b' \
2065 -e '/^#[ ]*undef[ ]/b' \
2066 -e '/^#[ ]*endif/b' \
2075 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2077 scriptname, cpp, sv, CPPMINUS);
2078 PL_doextract = FALSE;
2079 #ifdef IAMSUID /* actually, this is caught earlier */
2080 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2082 (void)seteuid(PL_uid); /* musn't stay setuid root */
2085 (void)setreuid((Uid_t)-1, PL_uid);
2087 #ifdef HAS_SETRESUID
2088 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2090 PerlProc_setuid(PL_uid);
2094 if (PerlProc_geteuid() != PL_uid)
2095 croak("Can't do seteuid!\n");
2097 #endif /* IAMSUID */
2098 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2102 else if (!*scriptname) {
2103 forbid_setid("program input from stdin");
2104 PL_rsfp = PerlIO_stdin();
2107 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2108 #if defined(HAS_FCNTL) && defined(F_SETFD)
2110 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2115 #ifndef IAMSUID /* in case script is not readable before setuid */
2117 PerlLIO_stat(SvPVX(GvSV(PL_curcop->cop_filegv)),&PL_statbuf) >= 0 &&
2118 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2121 PerlProc_execv(form("%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv);
2122 croak("Can't do setuid\n");
2126 croak("Can't open perl script \"%s\": %s\n",
2127 SvPVX(GvSV(PL_curcop->cop_filegv)), Strerror(errno));
2132 * I_SYSSTATVFS HAS_FSTATVFS
2134 * I_STATFS HAS_FSTATFS
2135 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2136 * here so that metaconfig picks them up. */
2140 fd_on_nosuid_fs(int fd)
2145 * Preferred order: fstatvfs(), fstatfs(), getmntent().
2146 * fstatvfs() is UNIX98.
2148 * getmntent() is O(number-of-mounted-filesystems) and can hang.
2151 # ifdef HAS_FSTATVFS
2152 struct statvfs stfs;
2153 check_okay = fstatvfs(fd, &stfs) == 0;
2154 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2156 # if defined(HAS_FSTATFS) && defined(HAS_STRUCT_STATFS_FLAGS)
2158 check_okay = fstatfs(fd, &stfs) == 0;
2159 # undef PERL_MOUNT_NOSUID
2160 # if !defined(PERL_MOUNT_NOSUID) && defined(MNT_NOSUID)
2161 # define PERL_MOUNT_NOSUID MNT_NOSUID
2163 # if !defined(PERL_MOUNT_NOSUID) && defined(MS_NOSUID)
2164 # define PERL_MOUNT_NOSUID MS_NOSUID
2166 # if !defined(PERL_MOUNT_NOSUID) && defined(M_NOSUID)
2167 # define PERL_MOUNT_NOSUID M_NOSUID
2169 # ifdef PERL_MOUNT_NOSUID
2170 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2173 # if defined(HAS_GETMNTENT) && defined(HAS_HASMNTOPT) && defined(MNTOPT_NOSUID)
2174 FILE *mtab = fopen("/etc/mtab", "r");
2175 struct mntent *entry;
2176 struct stat stb, fsb;
2178 if (mtab && (fstat(fd, &stb) == 0)) {
2179 while (entry = getmntent(mtab)) {
2180 if (stat(entry->mnt_dir, &fsb) == 0
2181 && fsb.st_dev == stb.st_dev)
2183 /* found the filesystem */
2185 if (hasmntopt(entry, MNTOPT_NOSUID))
2188 } /* A single fs may well fail its stat(). */
2193 # endif /* mntent */
2194 # endif /* statfs */
2195 # endif /* statvfs */
2197 croak("Can't check filesystem of script \"%s\"", PL_origfilename);
2200 #endif /* IAMSUID */
2203 validate_suid(char *validarg, char *scriptname, int fdscript)
2207 /* do we need to emulate setuid on scripts? */
2209 /* This code is for those BSD systems that have setuid #! scripts disabled
2210 * in the kernel because of a security problem. Merely defining DOSUID
2211 * in perl will not fix that problem, but if you have disabled setuid
2212 * scripts in the kernel, this will attempt to emulate setuid and setgid
2213 * on scripts that have those now-otherwise-useless bits set. The setuid
2214 * root version must be called suidperl or sperlN.NNN. If regular perl
2215 * discovers that it has opened a setuid script, it calls suidperl with
2216 * the same argv that it had. If suidperl finds that the script it has
2217 * just opened is NOT setuid root, it sets the effective uid back to the
2218 * uid. We don't just make perl setuid root because that loses the
2219 * effective uid we had before invoking perl, if it was different from the
2222 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2223 * be defined in suidperl only. suidperl must be setuid root. The
2224 * Configure script will set this up for you if you want it.
2231 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2232 croak("Can't stat script \"%s\"",PL_origfilename);
2233 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2238 #ifndef HAS_SETREUID
2239 /* On this access check to make sure the directories are readable,
2240 * there is actually a small window that the user could use to make
2241 * filename point to an accessible directory. So there is a faint
2242 * chance that someone could execute a setuid script down in a
2243 * non-accessible directory. I don't know what to do about that.
2244 * But I don't think it's too important. The manual lies when
2245 * it says access() is useful in setuid programs.
2247 if (PerlLIO_access(SvPVX(GvSV(PL_curcop->cop_filegv)),1)) /*double check*/
2248 croak("Permission denied");
2250 /* If we can swap euid and uid, then we can determine access rights
2251 * with a simple stat of the file, and then compare device and
2252 * inode to make sure we did stat() on the same file we opened.
2253 * Then we just have to make sure he or she can execute it.
2256 struct stat tmpstatbuf;
2260 setreuid(PL_euid,PL_uid) < 0
2263 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2266 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2267 croak("Can't swap uid and euid"); /* really paranoid */
2268 if (PerlLIO_stat(SvPVX(GvSV(PL_curcop->cop_filegv)),&tmpstatbuf) < 0)
2269 croak("Permission denied"); /* testing full pathname here */
2270 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2271 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2272 croak("Permission denied");
2274 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2275 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2276 (void)PerlIO_close(PL_rsfp);
2277 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2278 PerlIO_printf(PL_rsfp,
2279 "User %ld tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2280 (Filename of set-id script was %s, uid %ld gid %ld.)\n\nSincerely,\nperl\n",
2281 (long)PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2282 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
2283 SvPVX(GvSV(PL_curcop->cop_filegv)),
2284 (long)PL_statbuf.st_uid, (long)PL_statbuf.st_gid);
2285 (void)PerlProc_pclose(PL_rsfp);
2287 croak("Permission denied\n");
2291 setreuid(PL_uid,PL_euid) < 0
2293 # if defined(HAS_SETRESUID)
2294 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2297 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2298 croak("Can't reswap uid and euid");
2299 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2300 croak("Permission denied\n");
2302 #endif /* HAS_SETREUID */
2303 #endif /* IAMSUID */
2305 if (!S_ISREG(PL_statbuf.st_mode))
2306 croak("Permission denied");
2307 if (PL_statbuf.st_mode & S_IWOTH)
2308 croak("Setuid/gid script is writable by world");
2309 PL_doswitches = FALSE; /* -s is insecure in suid */
2310 PL_curcop->cop_line++;
2311 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2312 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2313 croak("No #! line");
2314 s = SvPV(PL_linestr,n_a)+2;
2316 while (!isSPACE(*s)) s++;
2317 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2318 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2319 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2320 croak("Not a perl script");
2321 while (*s == ' ' || *s == '\t') s++;
2323 * #! arg must be what we saw above. They can invoke it by
2324 * mentioning suidperl explicitly, but they may not add any strange
2325 * arguments beyond what #! says if they do invoke suidperl that way.
2327 len = strlen(validarg);
2328 if (strEQ(validarg," PHOOEY ") ||
2329 strnNE(s,validarg,len) || !isSPACE(s[len]))
2330 croak("Args must match #! line");
2333 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2334 PL_euid == PL_statbuf.st_uid)
2336 croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2337 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2338 #endif /* IAMSUID */
2340 if (PL_euid) { /* oops, we're not the setuid root perl */
2341 (void)PerlIO_close(PL_rsfp);
2344 PerlProc_execv(form("%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv);
2346 croak("Can't do setuid\n");
2349 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2351 (void)setegid(PL_statbuf.st_gid);
2354 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2356 #ifdef HAS_SETRESGID
2357 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2359 PerlProc_setgid(PL_statbuf.st_gid);
2363 if (PerlProc_getegid() != PL_statbuf.st_gid)
2364 croak("Can't do setegid!\n");
2366 if (PL_statbuf.st_mode & S_ISUID) {
2367 if (PL_statbuf.st_uid != PL_euid)
2369 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2372 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2374 #ifdef HAS_SETRESUID
2375 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2377 PerlProc_setuid(PL_statbuf.st_uid);
2381 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2382 croak("Can't do seteuid!\n");
2384 else if (PL_uid) { /* oops, mustn't run as root */
2386 (void)seteuid((Uid_t)PL_uid);
2389 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2391 #ifdef HAS_SETRESUID
2392 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2394 PerlProc_setuid((Uid_t)PL_uid);
2398 if (PerlProc_geteuid() != PL_uid)
2399 croak("Can't do seteuid!\n");
2402 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2403 croak("Permission denied\n"); /* they can't do this */
2406 else if (PL_preprocess)
2407 croak("-P not allowed for setuid/setgid script\n");
2408 else if (fdscript >= 0)
2409 croak("fd script not allowed in suidperl\n");
2411 croak("Script is not setuid/setgid in suidperl\n");
2413 /* We absolutely must clear out any saved ids here, so we */
2414 /* exec the real perl, substituting fd script for scriptname. */
2415 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2416 PerlIO_rewind(PL_rsfp);
2417 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2418 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2419 if (!PL_origargv[which])
2420 croak("Permission denied");
2421 PL_origargv[which] = savepv(form("/dev/fd/%d/%s",
2422 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
2423 #if defined(HAS_FCNTL) && defined(F_SETFD)
2424 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
2426 PerlProc_execv(form("%s/perl%s", BIN_EXP, PL_patchlevel), PL_origargv);/* try again */
2427 croak("Can't do setuid\n");
2428 #endif /* IAMSUID */
2430 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
2431 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
2433 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
2434 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
2436 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
2439 croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2440 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2441 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
2442 /* not set-id, must be wrapped */
2448 find_beginning(void)
2450 register char *s, *s2;
2452 /* skip forward in input to the real script? */
2455 while (PL_doextract) {
2456 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
2457 croak("No Perl script found in input\n");
2458 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
2459 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
2460 PL_doextract = FALSE;
2461 while (*s && !(isSPACE (*s) || *s == '#')) s++;
2463 while (*s == ' ' || *s == '\t') s++;
2465 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
2466 if (strnEQ(s2-4,"perl",4))
2468 while (s = moreswitches(s)) ;
2470 if (PL_cddir && PerlDir_chdir(PL_cddir) < 0)
2471 croak("Can't chdir to %s",PL_cddir);
2480 PL_uid = (int)PerlProc_getuid();
2481 PL_euid = (int)PerlProc_geteuid();
2482 PL_gid = (int)PerlProc_getgid();
2483 PL_egid = (int)PerlProc_getegid();
2485 PL_uid |= PL_gid << 16;
2486 PL_euid |= PL_egid << 16;
2488 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
2492 forbid_setid(char *s)
2494 if (PL_euid != PL_uid)
2495 croak("No %s allowed while running setuid", s);
2496 if (PL_egid != PL_gid)
2497 croak("No %s allowed while running setgid", s);
2504 PL_curstash = PL_debstash;
2505 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
2506 AvREAL_off(PL_dbargs);
2507 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
2508 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
2509 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
2510 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
2511 sv_setiv(PL_DBsingle, 0);
2512 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
2513 sv_setiv(PL_DBtrace, 0);
2514 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
2515 sv_setiv(PL_DBsignal, 0);
2516 PL_curstash = PL_defstash;
2519 #ifndef STRESS_REALLOC
2520 #define REASONABLE(size) (size)
2522 #define REASONABLE(size) (1) /* unreasonable */
2526 init_stacks(ARGSproto)
2528 /* start with 128-item stack and 8K cxstack */
2529 PL_curstackinfo = new_stackinfo(REASONABLE(128),
2530 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
2531 PL_curstackinfo->si_type = PERLSI_MAIN;
2532 PL_curstack = PL_curstackinfo->si_stack;
2533 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
2535 PL_stack_base = AvARRAY(PL_curstack);
2536 PL_stack_sp = PL_stack_base;
2537 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
2539 New(50,PL_tmps_stack,REASONABLE(128),SV*);
2542 PL_tmps_max = REASONABLE(128);
2544 New(54,PL_markstack,REASONABLE(32),I32);
2545 PL_markstack_ptr = PL_markstack;
2546 PL_markstack_max = PL_markstack + REASONABLE(32);
2550 New(54,PL_scopestack,REASONABLE(32),I32);
2551 PL_scopestack_ix = 0;
2552 PL_scopestack_max = REASONABLE(32);
2554 New(54,PL_savestack,REASONABLE(128),ANY);
2555 PL_savestack_ix = 0;
2556 PL_savestack_max = REASONABLE(128);
2558 New(54,PL_retstack,REASONABLE(16),OP*);
2560 PL_retstack_max = REASONABLE(16);
2569 while (PL_curstackinfo->si_next)
2570 PL_curstackinfo = PL_curstackinfo->si_next;
2571 while (PL_curstackinfo) {
2572 PERL_SI *p = PL_curstackinfo->si_prev;
2573 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
2574 Safefree(PL_curstackinfo->si_cxstack);
2575 Safefree(PL_curstackinfo);
2576 PL_curstackinfo = p;
2578 Safefree(PL_tmps_stack);
2579 Safefree(PL_markstack);
2580 Safefree(PL_scopestack);
2581 Safefree(PL_savestack);
2582 Safefree(PL_retstack);
2584 Safefree(PL_debname);
2585 Safefree(PL_debdelim);
2590 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
2601 lex_start(PL_linestr);
2603 PL_subname = newSVpvn("main",4);
2607 init_predump_symbols(void)
2613 sv_setpvn(perl_get_sv("\"", TRUE), " ", 1);
2614 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
2615 GvMULTI_on(PL_stdingv);
2616 IoIFP(GvIOp(PL_stdingv)) = PerlIO_stdin();
2617 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
2619 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(PL_stdingv));
2621 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
2623 IoOFP(GvIOp(tmpgv)) = IoIFP(GvIOp(tmpgv)) = PerlIO_stdout();
2625 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
2627 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(PL_defoutgv));
2629 othergv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
2630 GvMULTI_on(othergv);
2631 IoOFP(GvIOp(othergv)) = IoIFP(GvIOp(othergv)) = PerlIO_stderr();
2632 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
2634 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(othergv));
2636 PL_statname = NEWSV(66,0); /* last filename we did stat on */
2639 PL_osname = savepv(OSNAME);
2643 init_postdump_symbols(register int argc, register char **argv, register char **env)
2650 argc--,argv++; /* skip name of script */
2651 if (PL_doswitches) {
2652 for (; argc > 0 && **argv == '-'; argc--,argv++) {
2655 if (argv[0][1] == '-') {
2659 if (s = strchr(argv[0], '=')) {
2661 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
2664 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
2667 PL_toptarget = NEWSV(0,0);
2668 sv_upgrade(PL_toptarget, SVt_PVFM);
2669 sv_setpvn(PL_toptarget, "", 0);
2670 PL_bodytarget = NEWSV(0,0);
2671 sv_upgrade(PL_bodytarget, SVt_PVFM);
2672 sv_setpvn(PL_bodytarget, "", 0);
2673 PL_formtarget = PL_bodytarget;
2676 if (tmpgv = gv_fetchpv("0",TRUE, SVt_PV)) {
2677 sv_setpv(GvSV(tmpgv),PL_origfilename);
2678 magicname("0", "0", 1);
2680 if (tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))
2681 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
2682 if (PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV)) {
2683 GvMULTI_on(PL_argvgv);
2684 (void)gv_AVadd(PL_argvgv);
2685 av_clear(GvAVn(PL_argvgv));
2686 for (; argc > 0; argc--,argv++) {
2687 av_push(GvAVn(PL_argvgv),newSVpv(argv[0],0));
2690 if (PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV)) {
2692 GvMULTI_on(PL_envgv);
2693 hv = GvHVn(PL_envgv);
2694 hv_magic(hv, PL_envgv, 'E');
2695 #ifndef VMS /* VMS doesn't have environ array */
2696 /* Note that if the supplied env parameter is actually a copy
2697 of the global environ then it may now point to free'd memory
2698 if the environment has been modified since. To avoid this
2699 problem we treat env==NULL as meaning 'use the default'
2704 environ[0] = Nullch;
2705 for (; *env; env++) {
2706 if (!(s = strchr(*env,'=')))
2712 sv = newSVpv(s--,0);
2713 (void)hv_store(hv, *env, s - *env, sv, 0);
2715 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
2716 /* Sins of the RTL. See note in my_setenv(). */
2717 (void)PerlEnv_putenv(savepv(*env));
2721 #ifdef DYNAMIC_ENV_FETCH
2722 HvNAME(hv) = savepv(ENV_HV_NAME);
2726 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
2727 sv_setiv(GvSV(tmpgv), (IV)getpid());
2736 s = PerlEnv_getenv("PERL5LIB");
2740 incpush(PerlEnv_getenv("PERLLIB"), FALSE);
2742 /* Treat PERL5?LIB as a possible search list logical name -- the
2743 * "natural" VMS idiom for a Unix path string. We allow each
2744 * element to be a set of |-separated directories for compatibility.
2748 if (my_trnlnm("PERL5LIB",buf,0))
2749 do { incpush(buf,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
2751 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE);
2755 /* Use the ~-expanded versions of APPLLIB (undocumented),
2756 ARCHLIB PRIVLIB SITEARCH and SITELIB
2759 incpush(APPLLIB_EXP, TRUE);
2763 incpush(ARCHLIB_EXP, FALSE);
2766 #define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
2769 incpush(PRIVLIB_EXP, TRUE);
2771 incpush(PRIVLIB_EXP, FALSE);
2775 incpush(SITEARCH_EXP, FALSE);
2779 incpush(SITELIB_EXP, TRUE);
2781 incpush(SITELIB_EXP, FALSE);
2785 incpush(".", FALSE);
2789 # define PERLLIB_SEP ';'
2792 # define PERLLIB_SEP '|'
2794 # define PERLLIB_SEP ':'
2797 #ifndef PERLLIB_MANGLE
2798 # define PERLLIB_MANGLE(s,n) (s)
2802 incpush(char *p, int addsubdirs)
2804 SV *subdir = Nullsv;
2810 subdir = sv_newmortal();
2811 if (!PL_archpat_auto) {
2812 STRLEN len = (sizeof(ARCHNAME) + strlen(PL_patchlevel)
2813 + sizeof("//auto"));
2814 New(55, PL_archpat_auto, len, char);
2815 sprintf(PL_archpat_auto, "/%s/%s/auto", ARCHNAME, PL_patchlevel);
2817 for (len = sizeof(ARCHNAME) + 2;
2818 PL_archpat_auto[len] != '\0' && PL_archpat_auto[len] != '/'; len++)
2819 if (PL_archpat_auto[len] == '.') PL_archpat_auto[len] = '_';
2824 /* Break at all separators */
2826 SV *libdir = NEWSV(55,0);
2829 /* skip any consecutive separators */
2830 while ( *p == PERLLIB_SEP ) {
2831 /* Uncomment the next line for PATH semantics */
2832 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
2836 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
2837 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
2842 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
2843 p = Nullch; /* break out */
2847 * BEFORE pushing libdir onto @INC we may first push version- and
2848 * archname-specific sub-directories.
2851 struct stat tmpstatbuf;
2856 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
2858 while (unix[len-1] == '/') len--; /* Cosmetic */
2859 sv_usepvn(libdir,unix,len);
2862 PerlIO_printf(PerlIO_stderr(),
2863 "Failed to unixify @INC element \"%s\"\n",
2866 /* .../archname/version if -d .../archname/version/auto */
2867 sv_setsv(subdir, libdir);
2868 sv_catpv(subdir, PL_archpat_auto);
2869 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2870 S_ISDIR(tmpstatbuf.st_mode))
2871 av_push(GvAVn(PL_incgv),
2872 newSVpvn(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2874 /* .../archname if -d .../archname/auto */
2875 sv_insert(subdir, SvCUR(libdir) + sizeof(ARCHNAME),
2876 strlen(PL_patchlevel) + 1, "", 0);
2877 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2878 S_ISDIR(tmpstatbuf.st_mode))
2879 av_push(GvAVn(PL_incgv),
2880 newSVpvn(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2883 /* finally push this lib directory on the end of @INC */
2884 av_push(GvAVn(PL_incgv), libdir);
2889 STATIC struct perl_thread *
2892 struct perl_thread *thr;
2895 Newz(53, thr, 1, struct perl_thread);
2896 PL_curcop = &PL_compiling;
2897 thr->cvcache = newHV();
2898 thr->threadsv = newAV();
2899 /* thr->threadsvp is set when find_threadsv is called */
2900 thr->specific = newAV();
2901 thr->errhv = newHV();
2902 thr->flags = THRf_R_JOINABLE;
2903 MUTEX_INIT(&thr->mutex);
2904 /* Handcraft thrsv similarly to mess_sv */
2905 New(53, PL_thrsv, 1, SV);
2906 Newz(53, xpv, 1, XPV);
2907 SvFLAGS(PL_thrsv) = SVt_PV;
2908 SvANY(PL_thrsv) = (void*)xpv;
2909 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
2910 SvPVX(PL_thrsv) = (char*)thr;
2911 SvCUR_set(PL_thrsv, sizeof(thr));
2912 SvLEN_set(PL_thrsv, sizeof(thr));
2913 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
2914 thr->oursv = PL_thrsv;
2915 PL_chopset = " \n-";
2918 MUTEX_LOCK(&PL_threads_mutex);
2923 MUTEX_UNLOCK(&PL_threads_mutex);
2925 #ifdef HAVE_THREAD_INTERN
2926 init_thread_intern(thr);
2929 #ifdef SET_THREAD_SELF
2930 SET_THREAD_SELF(thr);
2932 thr->self = pthread_self();
2933 #endif /* SET_THREAD_SELF */
2937 * These must come after the SET_THR because sv_setpvn does
2938 * SvTAINT and the taint fields require dTHR.
2940 PL_toptarget = NEWSV(0,0);
2941 sv_upgrade(PL_toptarget, SVt_PVFM);
2942 sv_setpvn(PL_toptarget, "", 0);
2943 PL_bodytarget = NEWSV(0,0);
2944 sv_upgrade(PL_bodytarget, SVt_PVFM);
2945 sv_setpvn(PL_bodytarget, "", 0);
2946 PL_formtarget = PL_bodytarget;
2947 thr->errsv = newSVpvn("", 0);
2948 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
2951 PL_regcompp = FUNC_NAME_TO_PTR(pregcomp);
2952 PL_regexecp = FUNC_NAME_TO_PTR(regexec_flags);
2954 PL_reginterp_cnt = 0;
2958 #endif /* USE_THREADS */
2961 call_list(I32 oldscope, AV *paramList)
2964 line_t oldline = PL_curcop->cop_line;
2969 while (AvFILL(paramList) >= 0) {
2970 CV *cv = (CV*)av_shift(paramList);
2978 PUSHMARK(PL_stack_sp);
2979 perl_call_sv((SV*)cv, G_EVAL|G_DISCARD);
2980 (void)SvPV(atsv, len);
2983 PL_curcop = &PL_compiling;
2984 PL_curcop->cop_line = oldline;
2985 if (paramList == PL_beginav)
2986 sv_catpv(atsv, "BEGIN failed--compilation aborted");
2988 sv_catpv(atsv, "END failed--cleanup aborted");
2989 while (PL_scopestack_ix > oldscope)
2991 croak("%s", SvPVX(atsv));
2999 /* my_exit() was called */
3000 while (PL_scopestack_ix > oldscope)
3003 PL_curstash = PL_defstash;
3005 call_list(oldscope, PL_endav);
3007 PL_curcop = &PL_compiling;
3008 PL_curcop->cop_line = oldline;
3009 if (PL_statusvalue) {
3010 if (paramList == PL_beginav)
3011 croak("BEGIN failed--compilation aborted");
3013 croak("END failed--cleanup aborted");
3018 if (!PL_restartop) {
3019 PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
3024 PL_curcop = &PL_compiling;
3025 PL_curcop->cop_line = oldline;
3037 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3038 thr, (unsigned long) status));
3047 STATUS_NATIVE_SET(status);
3054 my_failure_exit(void)
3057 if (vaxc$errno & 1) {
3058 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3059 STATUS_NATIVE_SET(44);
3062 if (!vaxc$errno && errno) /* unlikely */
3063 STATUS_NATIVE_SET(44);
3065 STATUS_NATIVE_SET(vaxc$errno);
3070 STATUS_POSIX_SET(errno);
3072 exitstatus = STATUS_POSIX >> 8;
3073 if (exitstatus & 255)
3074 STATUS_POSIX_SET(exitstatus);
3076 STATUS_POSIX_SET(255);
3086 register PERL_CONTEXT *cx;
3091 SvREFCNT_dec(PL_e_script);
3092 PL_e_script = Nullsv;
3095 POPSTACK_TO(PL_mainstack);
3096 if (cxstack_ix >= 0) {
3099 POPBLOCK(cx,PL_curpm);
3108 #endif /* PERL_OBJECT */
3114 read_e_script(CPerlObj *pPerl, int idx, SV *buf_sv, int maxlen)
3116 read_e_script(int idx, SV *buf_sv, int maxlen)
3120 p = SvPVX(PL_e_script);
3121 nl = strchr(p, '\n');
3122 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3124 filter_del(read_e_script);
3127 sv_catpvn(buf_sv, p, nl-p);
3128 sv_chop(PL_e_script, nl);