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);
898 if (!PL_tainting && (s = PerlEnv_getenv("PERL5OPT"))) {
901 if (*s == '-' && *(s+1) == 'T')
914 if (!strchr("DIMUdmw", *s))
915 croak("Illegal switch in PERL5OPT: -%c", *s);
922 scriptname = argv[0];
925 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
927 else if (scriptname == Nullch) {
929 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
937 open_script(scriptname,dosearch,sv,&fdscript);
939 validate_suid(validarg, scriptname,fdscript);
944 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
945 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
946 CvUNIQUE_on(PL_compcv);
948 PL_comppad = newAV();
949 av_push(PL_comppad, Nullsv);
950 PL_curpad = AvARRAY(PL_comppad);
951 PL_comppad_name = newAV();
952 PL_comppad_name_fill = 0;
953 PL_min_intro_pending = 0;
956 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
957 PL_curpad[0] = (SV*)newAV();
958 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
959 CvOWNER(PL_compcv) = 0;
960 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
961 MUTEX_INIT(CvMUTEXP(PL_compcv));
962 #endif /* USE_THREADS */
964 comppadlist = newAV();
965 AvREAL_off(comppadlist);
966 av_store(comppadlist, 0, (SV*)PL_comppad_name);
967 av_store(comppadlist, 1, (SV*)PL_comppad);
968 CvPADLIST(PL_compcv) = comppadlist;
970 boot_core_UNIVERSAL();
973 (*xsinit)(PERL_OBJECT_THIS); /* in case linked C routines want magical variables */
974 #if defined(VMS) || defined(WIN32) || defined(DJGPP)
978 init_predump_symbols();
979 /* init_postdump_symbols not currently designed to be called */
980 /* more than once (ENV isn't cleared first, for example) */
981 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
983 init_postdump_symbols(argc,argv,env);
987 /* now parse the script */
989 SETERRNO(0,SS$_NORMAL);
991 if (yyparse() || PL_error_count) {
993 croak("%s had compilation errors.\n", PL_origfilename);
995 croak("Execution of %s aborted due to compilation errors.\n",
999 PL_curcop->cop_line = 0;
1000 PL_curstash = PL_defstash;
1001 PL_preprocess = FALSE;
1003 SvREFCNT_dec(PL_e_script);
1004 PL_e_script = Nullsv;
1007 /* now that script is parsed, we can modify record separator */
1008 SvREFCNT_dec(PL_rs);
1009 PL_rs = SvREFCNT_inc(PL_nrs);
1010 sv_setsv(perl_get_sv("/", TRUE), PL_rs);
1014 if (ckWARN(WARN_ONCE))
1015 gv_check(PL_defstash);
1021 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1022 dump_mstats("after compilation:");
1035 perl_run(PerlInterpreter *sv_interp)
1044 if (!(PL_curinterp = sv_interp))
1048 oldscope = PL_scopestack_ix;
1053 cxstack_ix = -1; /* start context stack again */
1056 /* my_exit() was called */
1057 while (PL_scopestack_ix > oldscope)
1060 PL_curstash = PL_defstash;
1062 call_list(oldscope, PL_endav);
1064 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1065 dump_mstats("after execution: ");
1068 return STATUS_NATIVE_EXPORT;
1070 if (!PL_restartop) {
1071 PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
1076 POPSTACK_TO(PL_mainstack);
1080 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1081 PL_sawampersand ? "Enabling" : "Omitting"));
1083 if (!PL_restartop) {
1084 DEBUG_x(dump_all());
1085 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1086 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%lx\n",
1087 (unsigned long) thr));
1090 PerlIO_printf(PerlIO_stderr(), "%s syntax OK\n", PL_origfilename);
1093 if (PERLDB_SINGLE && PL_DBsingle)
1094 sv_setiv(PL_DBsingle, 1);
1096 call_list(oldscope, PL_initav);
1102 PL_op = PL_restartop;
1106 else if (PL_main_start) {
1107 CvDEPTH(PL_main_cv) = 1;
1108 PL_op = PL_main_start;
1118 perl_get_sv(const char *name, I32 create)
1122 if (name[1] == '\0' && !isALPHA(name[0])) {
1123 PADOFFSET tmp = find_threadsv(name);
1124 if (tmp != NOT_IN_PAD) {
1126 return THREADSV(tmp);
1129 #endif /* USE_THREADS */
1130 gv = gv_fetchpv(name, create, SVt_PV);
1137 perl_get_av(const char *name, I32 create)
1139 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1148 perl_get_hv(const char *name, I32 create)
1150 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1159 perl_get_cv(const char *name, I32 create)
1161 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1162 /* XXX unsafe for threads if eval_owner isn't held */
1163 if (create && !GvCVu(gv))
1164 return newSUB(start_subparse(FALSE, 0),
1165 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1173 /* Be sure to refetch the stack pointer after calling these routines. */
1176 perl_call_argv(const char *sub_name, I32 flags, register char **argv)
1178 /* See G_* flags in cop.h */
1179 /* null terminated arg list */
1186 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1191 return perl_call_pv(sub_name, flags);
1195 perl_call_pv(const char *sub_name, I32 flags)
1196 /* name of the subroutine */
1197 /* See G_* flags in cop.h */
1199 return perl_call_sv((SV*)perl_get_cv(sub_name, TRUE), flags);
1203 perl_call_method(const char *methname, I32 flags)
1204 /* name of the subroutine */
1205 /* See G_* flags in cop.h */
1211 XPUSHs(sv_2mortal(newSVpv(methname,0)));
1216 return perl_call_sv(*PL_stack_sp--, flags);
1219 /* May be called with any of a CV, a GV, or an SV containing the name. */
1221 perl_call_sv(SV *sv, I32 flags)
1223 /* See G_* flags in cop.h */
1226 LOGOP myop; /* fake syntax tree node */
1230 bool oldcatch = CATCH_GET;
1235 if (flags & G_DISCARD) {
1240 Zero(&myop, 1, LOGOP);
1241 myop.op_next = Nullop;
1242 if (!(flags & G_NOARGS))
1243 myop.op_flags |= OPf_STACKED;
1244 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1245 (flags & G_ARRAY) ? OPf_WANT_LIST :
1250 EXTEND(PL_stack_sp, 1);
1251 *++PL_stack_sp = sv;
1253 oldscope = PL_scopestack_ix;
1255 if (PERLDB_SUB && PL_curstash != PL_debstash
1256 /* Handle first BEGIN of -d. */
1257 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1258 /* Try harder, since this may have been a sighandler, thus
1259 * curstash may be meaningless. */
1260 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1261 && !(flags & G_NODEBUG))
1262 PL_op->op_private |= OPpENTERSUB_DB;
1264 if (flags & G_EVAL) {
1265 cLOGOP->op_other = PL_op;
1267 /* we're trying to emulate pp_entertry() here */
1269 register PERL_CONTEXT *cx;
1270 I32 gimme = GIMME_V;
1275 push_return(PL_op->op_next);
1276 PUSHBLOCK(cx, CXt_EVAL, PL_stack_sp);
1278 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1281 if (flags & G_KEEPERR)
1296 /* my_exit() was called */
1297 PL_curstash = PL_defstash;
1301 croak("Callback called exit");
1306 PL_op = PL_restartop;
1310 PL_stack_sp = PL_stack_base + oldmark;
1311 if (flags & G_ARRAY)
1315 *++PL_stack_sp = &PL_sv_undef;
1323 if (PL_op == (OP*)&myop)
1324 PL_op = pp_entersub(ARGS);
1327 retval = PL_stack_sp - (PL_stack_base + oldmark);
1328 if ((flags & G_EVAL) && !(flags & G_KEEPERR))
1332 if (flags & G_EVAL) {
1333 if (PL_scopestack_ix > oldscope) {
1337 register PERL_CONTEXT *cx;
1349 CATCH_SET(oldcatch);
1351 if (flags & G_DISCARD) {
1352 PL_stack_sp = PL_stack_base + oldmark;
1361 /* Eval a string. The G_EVAL flag is always assumed. */
1364 perl_eval_sv(SV *sv, I32 flags)
1366 /* See G_* flags in cop.h */
1369 UNOP myop; /* fake syntax tree node */
1370 I32 oldmark = SP - PL_stack_base;
1377 if (flags & G_DISCARD) {
1384 Zero(PL_op, 1, UNOP);
1385 EXTEND(PL_stack_sp, 1);
1386 *++PL_stack_sp = sv;
1387 oldscope = PL_scopestack_ix;
1389 if (!(flags & G_NOARGS))
1390 myop.op_flags = OPf_STACKED;
1391 myop.op_next = Nullop;
1392 myop.op_type = OP_ENTEREVAL;
1393 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1394 (flags & G_ARRAY) ? OPf_WANT_LIST :
1396 if (flags & G_KEEPERR)
1397 myop.op_flags |= OPf_SPECIAL;
1407 /* my_exit() was called */
1408 PL_curstash = PL_defstash;
1412 croak("Callback called exit");
1417 PL_op = PL_restartop;
1421 PL_stack_sp = PL_stack_base + oldmark;
1422 if (flags & G_ARRAY)
1426 *++PL_stack_sp = &PL_sv_undef;
1431 if (PL_op == (OP*)&myop)
1432 PL_op = pp_entereval(ARGS);
1435 retval = PL_stack_sp - (PL_stack_base + oldmark);
1436 if (!(flags & G_KEEPERR))
1441 if (flags & G_DISCARD) {
1442 PL_stack_sp = PL_stack_base + oldmark;
1452 perl_eval_pv(const char *p, I32 croak_on_error)
1455 SV* sv = newSVpv(p, 0);
1458 perl_eval_sv(sv, G_SCALAR);
1465 if (croak_on_error && SvTRUE(ERRSV)) {
1467 croak(SvPVx(ERRSV, n_a));
1473 /* Require a module. */
1476 perl_require_pv(const char *pv)
1480 PUSHSTACKi(PERLSI_REQUIRE);
1482 sv = sv_newmortal();
1483 sv_setpv(sv, "require '");
1486 perl_eval_sv(sv, G_DISCARD);
1492 magicname(char *sym, char *name, I32 namlen)
1496 if (gv = gv_fetchpv(sym,TRUE, SVt_PV))
1497 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1501 usage(char *name) /* XXX move this out into a module ? */
1504 /* This message really ought to be max 23 lines.
1505 * Removed -h because the user already knows that opton. Others? */
1507 static char *usage_msg[] = {
1508 "-0[octal] specify record separator (\\0, if no argument)",
1509 "-a autosplit mode with -n or -p (splits $_ into @F)",
1510 "-c check syntax only (runs BEGIN and END blocks)",
1511 "-d[:debugger] run scripts under debugger",
1512 "-D[number/list] set debugging flags (argument is a bit mask or flags)",
1513 "-e 'command' one line of script. Several -e's allowed. Omit [programfile].",
1514 "-F/pattern/ split() pattern for autosplit (-a). The //'s are optional.",
1515 "-i[extension] edit <> files in place (make backup if extension supplied)",
1516 "-Idirectory specify @INC/#include directory (may be used more than once)",
1517 "-l[octal] enable line ending processing, specifies line terminator",
1518 "-[mM][-]module.. executes `use/no module...' before executing your script.",
1519 "-n assume 'while (<>) { ... }' loop around your script",
1520 "-p assume loop like -n but print line also like sed",
1521 "-P run script through C preprocessor before compilation",
1522 "-s enable some switch parsing for switches after script name",
1523 "-S look for the script using PATH environment variable",
1524 "-T turn on tainting checks",
1525 "-u dump core after parsing script",
1526 "-U allow unsafe operations",
1527 "-v print version number, patchlevel plus VERY IMPORTANT perl info",
1528 "-V[:variable] print perl configuration information",
1529 "-w TURN WARNINGS ON FOR COMPILATION OF YOUR SCRIPT. Recommended.",
1530 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
1534 char **p = usage_msg;
1536 printf("\nUsage: %s [switches] [--] [programfile] [arguments]", name);
1538 printf("\n %s", *p++);
1541 /* This routine handles any switches that can be given during run */
1544 moreswitches(char *s)
1553 rschar = scan_oct(s, 4, &numlen);
1554 SvREFCNT_dec(PL_nrs);
1555 if (rschar & ~((U8)~0))
1556 PL_nrs = &PL_sv_undef;
1557 else if (!rschar && numlen >= 2)
1558 PL_nrs = newSVpvn("", 0);
1561 PL_nrs = newSVpvn(&ch, 1);
1567 PL_splitstr = savepv(s + 1);
1581 if (*s == ':' || *s == '=') {
1582 my_setenv("PERL5DB", form("use Devel::%s;", ++s));
1586 PL_perldb = PERLDB_ALL;
1593 if (isALPHA(s[1])) {
1594 static char debopts[] = "psltocPmfrxuLHXDS";
1597 for (s++; *s && (d = strchr(debopts,*s)); s++)
1598 PL_debug |= 1 << (d - debopts);
1601 PL_debug = atoi(s+1);
1602 for (s++; isDIGIT(*s); s++) ;
1604 PL_debug |= 0x80000000;
1606 warn("Recompile perl with -DDEBUGGING to use -D switch\n");
1607 for (s++; isALNUM(*s); s++) ;
1612 usage(PL_origargv[0]);
1616 Safefree(PL_inplace);
1617 PL_inplace = savepv(s+1);
1619 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
1622 if (*s == '-') /* Additional switches on #! line. */
1626 case 'I': /* -I handled both here and in parse_perl() */
1629 while (*s && isSPACE(*s))
1633 for (e = s; *e && !isSPACE(*e); e++) ;
1634 p = savepvn(s, e-s);
1640 croak("No space allowed after -I");
1648 PL_ors = savepv("\n");
1650 *PL_ors = scan_oct(s, 3 + (*s == '0'), &numlen);
1655 if (RsPARA(PL_nrs)) {
1660 PL_ors = SvPV(PL_nrs, PL_orslen);
1661 PL_ors = savepvn(PL_ors, PL_orslen);
1665 forbid_setid("-M"); /* XXX ? */
1668 forbid_setid("-m"); /* XXX ? */
1673 /* -M-foo == 'no foo' */
1674 if (*s == '-') { use = "no "; ++s; }
1675 sv = newSVpv(use,0);
1677 /* We allow -M'Module qw(Foo Bar)' */
1678 while(isALNUM(*s) || *s==':') ++s;
1680 sv_catpv(sv, start);
1681 if (*(start-1) == 'm') {
1683 croak("Can't use '%c' after -mname", *s);
1684 sv_catpv( sv, " ()");
1687 sv_catpvn(sv, start, s-start);
1688 sv_catpv(sv, " split(/,/,q{");
1693 if (PL_preambleav == NULL)
1694 PL_preambleav = newAV();
1695 av_push(PL_preambleav, sv);
1698 croak("No space allowed after -%c", *(s-1));
1710 PL_doswitches = TRUE;
1715 croak("Too late for \"-T\" option");
1719 PL_do_undump = TRUE;
1727 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
1728 printf("\nThis is perl, version %d.%03d_%02d built for %s",
1729 PERL_REVISION, PERL_VERSION, PERL_SUBVERSION, ARCHNAME);
1731 printf("\nThis is perl, version %s built for %s",
1732 PL_patchlevel, ARCHNAME);
1734 #if defined(LOCAL_PATCH_COUNT)
1735 if (LOCAL_PATCH_COUNT > 0)
1736 printf("\n(with %d registered patch%s, see perl -V for more detail)",
1737 LOCAL_PATCH_COUNT, (LOCAL_PATCH_COUNT!=1) ? "es" : "");
1740 printf("\n\nCopyright 1987-1999, Larry Wall\n");
1742 printf("\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
1745 printf("djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n");
1746 printf("djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
1749 printf("\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
1750 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
1753 printf("atariST series port, ++jrb bammi@cadence.com\n");
1756 printf("BeOS port Copyright Tom Spindler, 1997-1999\n");
1759 printf("MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
1762 printf("MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
1765 printf("Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
1768 printf("VM/ESA port by Neale Ferguson, 1998-1999\n");
1771 printf("BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
1774 printf("MiNT port by Guido Flohr, 1997-1999\n");
1776 #ifdef BINARY_BUILD_NOTICE
1777 BINARY_BUILD_NOTICE;
1780 Perl may be copied only under the terms of either the Artistic License or the\n\
1781 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
1782 Complete documentation for Perl, including FAQ lists, should be found on\n\
1783 this system using `man perl' or `perldoc perl'. If you have access to the\n\
1784 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
1787 if (! (PL_dowarn & G_WARN_ALL_MASK))
1788 PL_dowarn |= G_WARN_ON;
1792 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
1793 PL_compiling.cop_warnings = WARN_ALL ;
1797 PL_dowarn = G_WARN_ALL_OFF;
1798 PL_compiling.cop_warnings = WARN_NONE ;
1803 if (s[1] == '-') /* Additional switches on #! line. */
1808 #if defined(WIN32) || !defined(PERL_STRICT_CR)
1814 #ifdef ALTERNATE_SHEBANG
1815 case 'S': /* OS/2 needs -S on "extproc" line. */
1823 croak("Can't emulate -%.1s on #! line",s);
1828 /* compliments of Tom Christiansen */
1830 /* unexec() can be found in the Gnu emacs distribution */
1831 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
1842 prog = newSVpv(BIN_EXP, 0);
1843 sv_catpv(prog, "/perl");
1844 file = newSVpv(PL_origfilename, 0);
1845 sv_catpv(file, ".perldump");
1847 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
1848 /* unexec prints msg to stderr in case of failure */
1849 PerlProc_exit(status);
1852 # include <lib$routines.h>
1853 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
1855 ABORT(); /* for use with undump */
1860 /* initialize curinterp */
1865 #ifdef PERL_OBJECT /* XXX kludge */
1868 PL_chopset = " \n-"; \
1869 PL_copline = NOLINE; \
1870 PL_curcop = &PL_compiling;\
1871 PL_curcopdb = NULL; \
1874 PL_dumpindent = 4; \
1875 PL_laststatval = -1; \
1876 PL_laststype = OP_STAT; \
1877 PL_maxscream = -1; \
1878 PL_maxsysfd = MAXSYSFD; \
1879 PL_statname = Nullsv; \
1880 PL_tmps_floor = -1; \
1882 PL_op_mask = NULL; \
1884 PL_laststatval = -1; \
1885 PL_laststype = OP_STAT; \
1886 PL_mess_sv = Nullsv; \
1887 PL_splitstr = " "; \
1888 PL_generation = 100; \
1889 PL_exitlist = NULL; \
1890 PL_exitlistlen = 0; \
1892 PL_in_clean_objs = FALSE; \
1893 PL_in_clean_all = FALSE; \
1894 PL_profiledata = NULL; \
1896 PL_rsfp_filters = Nullav; \
1901 # ifdef MULTIPLICITY
1902 # define PERLVAR(var,type)
1903 # define PERLVARI(var,type,init) PL_curinterp->var = init;
1904 # define PERLVARIC(var,type,init) PL_curinterp->var = init;
1905 # include "intrpvar.h"
1906 # ifndef USE_THREADS
1907 # include "thrdvar.h"
1913 # define PERLVAR(var,type)
1914 # define PERLVARI(var,type,init) PL_##var = init;
1915 # define PERLVARIC(var,type,init) PL_##var = init;
1916 # include "intrpvar.h"
1917 # ifndef USE_THREADS
1918 # include "thrdvar.h"
1929 init_main_stash(void)
1934 /* Note that strtab is a rather special HV. Assumptions are made
1935 about not iterating on it, and not adding tie magic to it.
1936 It is properly deallocated in perl_destruct() */
1937 PL_strtab = newHV();
1939 MUTEX_INIT(&PL_strtab_mutex);
1941 HvSHAREKEYS_off(PL_strtab); /* mandatory */
1942 hv_ksplit(PL_strtab, 512);
1944 PL_curstash = PL_defstash = newHV();
1945 PL_curstname = newSVpvn("main",4);
1946 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
1947 SvREFCNT_dec(GvHV(gv));
1948 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
1950 HvNAME(PL_defstash) = savepv("main");
1951 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
1952 GvMULTI_on(PL_incgv);
1953 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
1954 GvMULTI_on(PL_hintgv);
1955 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
1956 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
1957 GvMULTI_on(PL_errgv);
1958 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
1959 GvMULTI_on(PL_replgv);
1960 (void)form("%240s",""); /* Preallocate temp - for immediate signals. */
1961 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
1962 sv_setpvn(ERRSV, "", 0);
1963 PL_curstash = PL_defstash;
1964 PL_compiling.cop_stash = PL_defstash;
1965 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
1966 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
1967 /* We must init $/ before switches are processed. */
1968 sv_setpvn(perl_get_sv("/", TRUE), "\n", 1);
1972 open_script(char *scriptname, bool dosearch, SV *sv, int *fdscript)
1980 PL_origfilename = savepv("-e");
1983 /* if find_script() returns, it returns a malloc()-ed value */
1984 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
1986 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
1987 char *s = scriptname + 8;
1988 *fdscript = atoi(s);
1992 scriptname = savepv(s + 1);
1993 Safefree(PL_origfilename);
1994 PL_origfilename = scriptname;
1999 PL_curcop->cop_filegv = gv_fetchfile(PL_origfilename);
2000 if (strEQ(PL_origfilename,"-"))
2002 if (*fdscript >= 0) {
2003 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2004 #if defined(HAS_FCNTL) && defined(F_SETFD)
2006 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2009 else if (PL_preprocess) {
2010 char *cpp_cfg = CPPSTDIN;
2011 SV *cpp = newSVpvn("",0);
2012 SV *cmd = NEWSV(0,0);
2014 if (strEQ(cpp_cfg, "cppstdin"))
2015 sv_catpvf(cpp, "%s/", BIN_EXP);
2016 sv_catpv(cpp, cpp_cfg);
2019 sv_catpv(sv,PRIVLIB_EXP);
2023 sed %s -e \"/^[^#]/b\" \
2024 -e \"/^#[ ]*include[ ]/b\" \
2025 -e \"/^#[ ]*define[ ]/b\" \
2026 -e \"/^#[ ]*if[ ]/b\" \
2027 -e \"/^#[ ]*ifdef[ ]/b\" \
2028 -e \"/^#[ ]*ifndef[ ]/b\" \
2029 -e \"/^#[ ]*else/b\" \
2030 -e \"/^#[ ]*elif[ ]/b\" \
2031 -e \"/^#[ ]*undef[ ]/b\" \
2032 -e \"/^#[ ]*endif/b\" \
2035 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2039 %s %s -e '/^[^#]/b' \
2040 -e '/^#[ ]*include[ ]/b' \
2041 -e '/^#[ ]*define[ ]/b' \
2042 -e '/^#[ ]*if[ ]/b' \
2043 -e '/^#[ ]*ifdef[ ]/b' \
2044 -e '/^#[ ]*ifndef[ ]/b' \
2045 -e '/^#[ ]*else/b' \
2046 -e '/^#[ ]*elif[ ]/b' \
2047 -e '/^#[ ]*undef[ ]/b' \
2048 -e '/^#[ ]*endif/b' \
2053 %s %s -e '/^[^#]/b' \
2054 -e '/^#[ ]*include[ ]/b' \
2055 -e '/^#[ ]*define[ ]/b' \
2056 -e '/^#[ ]*if[ ]/b' \
2057 -e '/^#[ ]*ifdef[ ]/b' \
2058 -e '/^#[ ]*ifndef[ ]/b' \
2059 -e '/^#[ ]*else/b' \
2060 -e '/^#[ ]*elif[ ]/b' \
2061 -e '/^#[ ]*undef[ ]/b' \
2062 -e '/^#[ ]*endif/b' \
2071 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2073 scriptname, cpp, sv, CPPMINUS);
2074 PL_doextract = FALSE;
2075 #ifdef IAMSUID /* actually, this is caught earlier */
2076 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2078 (void)seteuid(PL_uid); /* musn't stay setuid root */
2081 (void)setreuid((Uid_t)-1, PL_uid);
2083 #ifdef HAS_SETRESUID
2084 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2086 PerlProc_setuid(PL_uid);
2090 if (PerlProc_geteuid() != PL_uid)
2091 croak("Can't do seteuid!\n");
2093 #endif /* IAMSUID */
2094 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2098 else if (!*scriptname) {
2099 forbid_setid("program input from stdin");
2100 PL_rsfp = PerlIO_stdin();
2103 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2104 #if defined(HAS_FCNTL) && defined(F_SETFD)
2106 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2111 #ifndef IAMSUID /* in case script is not readable before setuid */
2113 PerlLIO_stat(SvPVX(GvSV(PL_curcop->cop_filegv)),&PL_statbuf) >= 0 &&
2114 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2117 PerlProc_execv(form("%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv);
2118 croak("Can't do setuid\n");
2122 croak("Can't open perl script \"%s\": %s\n",
2123 SvPVX(GvSV(PL_curcop->cop_filegv)), Strerror(errno));
2128 * I_SYSSTATVFS HAS_FSTATVFS
2130 * I_STATFS HAS_FSTATFS
2131 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2132 * here so that metaconfig picks them up. */
2136 fd_on_nosuid_fs(int fd)
2141 * Preferred order: fstatvfs(), fstatfs(), getmntent().
2142 * fstatvfs() is UNIX98.
2144 * getmntent() is O(number-of-mounted-filesystems) and can hang.
2147 # ifdef HAS_FSTATVFS
2148 struct statvfs stfs;
2149 check_okay = fstatvfs(fd, &stfs) == 0;
2150 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2152 # if defined(HAS_FSTATFS) && defined(HAS_STRUCT_STATFS_FLAGS)
2154 check_okay = fstatfs(fd, &stfs) == 0;
2155 # undef PERL_MOUNT_NOSUID
2156 # if !defined(PERL_MOUNT_NOSUID) && defined(MNT_NOSUID)
2157 # define PERL_MOUNT_NOSUID MNT_NOSUID
2159 # if !defined(PERL_MOUNT_NOSUID) && defined(MS_NOSUID)
2160 # define PERL_MOUNT_NOSUID MS_NOSUID
2162 # if !defined(PERL_MOUNT_NOSUID) && defined(M_NOSUID)
2163 # define PERL_MOUNT_NOSUID M_NOSUID
2165 # ifdef PERL_MOUNT_NOSUID
2166 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2169 # if defined(HAS_GETMNTENT) && defined(HAS_HASMNTOPT) && defined(MNTOPT_NOSUID)
2170 FILE *mtab = fopen("/etc/mtab", "r");
2171 struct mntent *entry;
2172 struct stat stb, fsb;
2174 if (mtab && (fstat(fd, &stb) == 0)) {
2175 while (entry = getmntent(mtab)) {
2176 if (stat(entry->mnt_dir, &fsb) == 0
2177 && fsb.st_dev == stb.st_dev)
2179 /* found the filesystem */
2181 if (hasmntopt(entry, MNTOPT_NOSUID))
2184 } /* A single fs may well fail its stat(). */
2189 # endif /* mntent */
2190 # endif /* statfs */
2191 # endif /* statvfs */
2193 croak("Can't check filesystem of script \"%s\"", PL_origfilename);
2196 #endif /* IAMSUID */
2199 validate_suid(char *validarg, char *scriptname, int fdscript)
2203 /* do we need to emulate setuid on scripts? */
2205 /* This code is for those BSD systems that have setuid #! scripts disabled
2206 * in the kernel because of a security problem. Merely defining DOSUID
2207 * in perl will not fix that problem, but if you have disabled setuid
2208 * scripts in the kernel, this will attempt to emulate setuid and setgid
2209 * on scripts that have those now-otherwise-useless bits set. The setuid
2210 * root version must be called suidperl or sperlN.NNN. If regular perl
2211 * discovers that it has opened a setuid script, it calls suidperl with
2212 * the same argv that it had. If suidperl finds that the script it has
2213 * just opened is NOT setuid root, it sets the effective uid back to the
2214 * uid. We don't just make perl setuid root because that loses the
2215 * effective uid we had before invoking perl, if it was different from the
2218 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2219 * be defined in suidperl only. suidperl must be setuid root. The
2220 * Configure script will set this up for you if you want it.
2227 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2228 croak("Can't stat script \"%s\"",PL_origfilename);
2229 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2234 #ifndef HAS_SETREUID
2235 /* On this access check to make sure the directories are readable,
2236 * there is actually a small window that the user could use to make
2237 * filename point to an accessible directory. So there is a faint
2238 * chance that someone could execute a setuid script down in a
2239 * non-accessible directory. I don't know what to do about that.
2240 * But I don't think it's too important. The manual lies when
2241 * it says access() is useful in setuid programs.
2243 if (PerlLIO_access(SvPVX(GvSV(PL_curcop->cop_filegv)),1)) /*double check*/
2244 croak("Permission denied");
2246 /* If we can swap euid and uid, then we can determine access rights
2247 * with a simple stat of the file, and then compare device and
2248 * inode to make sure we did stat() on the same file we opened.
2249 * Then we just have to make sure he or she can execute it.
2252 struct stat tmpstatbuf;
2256 setreuid(PL_euid,PL_uid) < 0
2259 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2262 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2263 croak("Can't swap uid and euid"); /* really paranoid */
2264 if (PerlLIO_stat(SvPVX(GvSV(PL_curcop->cop_filegv)),&tmpstatbuf) < 0)
2265 croak("Permission denied"); /* testing full pathname here */
2266 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2267 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2268 croak("Permission denied");
2270 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2271 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2272 (void)PerlIO_close(PL_rsfp);
2273 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2274 PerlIO_printf(PL_rsfp,
2275 "User %ld tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2276 (Filename of set-id script was %s, uid %ld gid %ld.)\n\nSincerely,\nperl\n",
2277 (long)PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2278 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
2279 SvPVX(GvSV(PL_curcop->cop_filegv)),
2280 (long)PL_statbuf.st_uid, (long)PL_statbuf.st_gid);
2281 (void)PerlProc_pclose(PL_rsfp);
2283 croak("Permission denied\n");
2287 setreuid(PL_uid,PL_euid) < 0
2289 # if defined(HAS_SETRESUID)
2290 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2293 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2294 croak("Can't reswap uid and euid");
2295 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2296 croak("Permission denied\n");
2298 #endif /* HAS_SETREUID */
2299 #endif /* IAMSUID */
2301 if (!S_ISREG(PL_statbuf.st_mode))
2302 croak("Permission denied");
2303 if (PL_statbuf.st_mode & S_IWOTH)
2304 croak("Setuid/gid script is writable by world");
2305 PL_doswitches = FALSE; /* -s is insecure in suid */
2306 PL_curcop->cop_line++;
2307 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2308 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2309 croak("No #! line");
2310 s = SvPV(PL_linestr,n_a)+2;
2312 while (!isSPACE(*s)) s++;
2313 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2314 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2315 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2316 croak("Not a perl script");
2317 while (*s == ' ' || *s == '\t') s++;
2319 * #! arg must be what we saw above. They can invoke it by
2320 * mentioning suidperl explicitly, but they may not add any strange
2321 * arguments beyond what #! says if they do invoke suidperl that way.
2323 len = strlen(validarg);
2324 if (strEQ(validarg," PHOOEY ") ||
2325 strnNE(s,validarg,len) || !isSPACE(s[len]))
2326 croak("Args must match #! line");
2329 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2330 PL_euid == PL_statbuf.st_uid)
2332 croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2333 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2334 #endif /* IAMSUID */
2336 if (PL_euid) { /* oops, we're not the setuid root perl */
2337 (void)PerlIO_close(PL_rsfp);
2340 PerlProc_execv(form("%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv);
2342 croak("Can't do setuid\n");
2345 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2347 (void)setegid(PL_statbuf.st_gid);
2350 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2352 #ifdef HAS_SETRESGID
2353 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2355 PerlProc_setgid(PL_statbuf.st_gid);
2359 if (PerlProc_getegid() != PL_statbuf.st_gid)
2360 croak("Can't do setegid!\n");
2362 if (PL_statbuf.st_mode & S_ISUID) {
2363 if (PL_statbuf.st_uid != PL_euid)
2365 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2368 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2370 #ifdef HAS_SETRESUID
2371 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2373 PerlProc_setuid(PL_statbuf.st_uid);
2377 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2378 croak("Can't do seteuid!\n");
2380 else if (PL_uid) { /* oops, mustn't run as root */
2382 (void)seteuid((Uid_t)PL_uid);
2385 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2387 #ifdef HAS_SETRESUID
2388 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2390 PerlProc_setuid((Uid_t)PL_uid);
2394 if (PerlProc_geteuid() != PL_uid)
2395 croak("Can't do seteuid!\n");
2398 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2399 croak("Permission denied\n"); /* they can't do this */
2402 else if (PL_preprocess)
2403 croak("-P not allowed for setuid/setgid script\n");
2404 else if (fdscript >= 0)
2405 croak("fd script not allowed in suidperl\n");
2407 croak("Script is not setuid/setgid in suidperl\n");
2409 /* We absolutely must clear out any saved ids here, so we */
2410 /* exec the real perl, substituting fd script for scriptname. */
2411 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2412 PerlIO_rewind(PL_rsfp);
2413 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2414 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2415 if (!PL_origargv[which])
2416 croak("Permission denied");
2417 PL_origargv[which] = savepv(form("/dev/fd/%d/%s",
2418 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
2419 #if defined(HAS_FCNTL) && defined(F_SETFD)
2420 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
2422 PerlProc_execv(form("%s/perl%s", BIN_EXP, PL_patchlevel), PL_origargv);/* try again */
2423 croak("Can't do setuid\n");
2424 #endif /* IAMSUID */
2426 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
2427 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
2429 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
2430 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
2432 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
2435 croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2436 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2437 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
2438 /* not set-id, must be wrapped */
2444 find_beginning(void)
2446 register char *s, *s2;
2448 /* skip forward in input to the real script? */
2451 while (PL_doextract) {
2452 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
2453 croak("No Perl script found in input\n");
2454 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
2455 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
2456 PL_doextract = FALSE;
2457 while (*s && !(isSPACE (*s) || *s == '#')) s++;
2459 while (*s == ' ' || *s == '\t') s++;
2461 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
2462 if (strnEQ(s2-4,"perl",4))
2464 while (s = moreswitches(s)) ;
2466 if (PL_cddir && PerlDir_chdir(PL_cddir) < 0)
2467 croak("Can't chdir to %s",PL_cddir);
2476 PL_uid = (int)PerlProc_getuid();
2477 PL_euid = (int)PerlProc_geteuid();
2478 PL_gid = (int)PerlProc_getgid();
2479 PL_egid = (int)PerlProc_getegid();
2481 PL_uid |= PL_gid << 16;
2482 PL_euid |= PL_egid << 16;
2484 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
2488 forbid_setid(char *s)
2490 if (PL_euid != PL_uid)
2491 croak("No %s allowed while running setuid", s);
2492 if (PL_egid != PL_gid)
2493 croak("No %s allowed while running setgid", s);
2500 PL_curstash = PL_debstash;
2501 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
2502 AvREAL_off(PL_dbargs);
2503 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
2504 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
2505 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
2506 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
2507 sv_setiv(PL_DBsingle, 0);
2508 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
2509 sv_setiv(PL_DBtrace, 0);
2510 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
2511 sv_setiv(PL_DBsignal, 0);
2512 PL_curstash = PL_defstash;
2515 #ifndef STRESS_REALLOC
2516 #define REASONABLE(size) (size)
2518 #define REASONABLE(size) (1) /* unreasonable */
2522 init_stacks(ARGSproto)
2524 /* start with 128-item stack and 8K cxstack */
2525 PL_curstackinfo = new_stackinfo(REASONABLE(128),
2526 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
2527 PL_curstackinfo->si_type = PERLSI_MAIN;
2528 PL_curstack = PL_curstackinfo->si_stack;
2529 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
2531 PL_stack_base = AvARRAY(PL_curstack);
2532 PL_stack_sp = PL_stack_base;
2533 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
2535 New(50,PL_tmps_stack,REASONABLE(128),SV*);
2538 PL_tmps_max = REASONABLE(128);
2540 New(54,PL_markstack,REASONABLE(32),I32);
2541 PL_markstack_ptr = PL_markstack;
2542 PL_markstack_max = PL_markstack + REASONABLE(32);
2546 New(54,PL_scopestack,REASONABLE(32),I32);
2547 PL_scopestack_ix = 0;
2548 PL_scopestack_max = REASONABLE(32);
2550 New(54,PL_savestack,REASONABLE(128),ANY);
2551 PL_savestack_ix = 0;
2552 PL_savestack_max = REASONABLE(128);
2554 New(54,PL_retstack,REASONABLE(16),OP*);
2556 PL_retstack_max = REASONABLE(16);
2565 while (PL_curstackinfo->si_next)
2566 PL_curstackinfo = PL_curstackinfo->si_next;
2567 while (PL_curstackinfo) {
2568 PERL_SI *p = PL_curstackinfo->si_prev;
2569 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
2570 Safefree(PL_curstackinfo->si_cxstack);
2571 Safefree(PL_curstackinfo);
2572 PL_curstackinfo = p;
2574 Safefree(PL_tmps_stack);
2575 Safefree(PL_markstack);
2576 Safefree(PL_scopestack);
2577 Safefree(PL_savestack);
2578 Safefree(PL_retstack);
2580 Safefree(PL_debname);
2581 Safefree(PL_debdelim);
2586 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
2597 lex_start(PL_linestr);
2599 PL_subname = newSVpvn("main",4);
2603 init_predump_symbols(void)
2609 sv_setpvn(perl_get_sv("\"", TRUE), " ", 1);
2610 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
2611 GvMULTI_on(PL_stdingv);
2612 IoIFP(GvIOp(PL_stdingv)) = PerlIO_stdin();
2613 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
2615 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(PL_stdingv));
2617 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
2619 IoOFP(GvIOp(tmpgv)) = IoIFP(GvIOp(tmpgv)) = PerlIO_stdout();
2621 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
2623 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(PL_defoutgv));
2625 othergv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
2626 GvMULTI_on(othergv);
2627 IoOFP(GvIOp(othergv)) = IoIFP(GvIOp(othergv)) = PerlIO_stderr();
2628 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
2630 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(othergv));
2632 PL_statname = NEWSV(66,0); /* last filename we did stat on */
2635 PL_osname = savepv(OSNAME);
2639 init_postdump_symbols(register int argc, register char **argv, register char **env)
2646 argc--,argv++; /* skip name of script */
2647 if (PL_doswitches) {
2648 for (; argc > 0 && **argv == '-'; argc--,argv++) {
2651 if (argv[0][1] == '-') {
2655 if (s = strchr(argv[0], '=')) {
2657 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
2660 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
2663 PL_toptarget = NEWSV(0,0);
2664 sv_upgrade(PL_toptarget, SVt_PVFM);
2665 sv_setpvn(PL_toptarget, "", 0);
2666 PL_bodytarget = NEWSV(0,0);
2667 sv_upgrade(PL_bodytarget, SVt_PVFM);
2668 sv_setpvn(PL_bodytarget, "", 0);
2669 PL_formtarget = PL_bodytarget;
2672 if (tmpgv = gv_fetchpv("0",TRUE, SVt_PV)) {
2673 sv_setpv(GvSV(tmpgv),PL_origfilename);
2674 magicname("0", "0", 1);
2676 if (tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))
2677 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
2678 if (PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV)) {
2679 GvMULTI_on(PL_argvgv);
2680 (void)gv_AVadd(PL_argvgv);
2681 av_clear(GvAVn(PL_argvgv));
2682 for (; argc > 0; argc--,argv++) {
2683 av_push(GvAVn(PL_argvgv),newSVpv(argv[0],0));
2686 if (PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV)) {
2688 GvMULTI_on(PL_envgv);
2689 hv = GvHVn(PL_envgv);
2690 hv_magic(hv, PL_envgv, 'E');
2691 #ifndef VMS /* VMS doesn't have environ array */
2692 /* Note that if the supplied env parameter is actually a copy
2693 of the global environ then it may now point to free'd memory
2694 if the environment has been modified since. To avoid this
2695 problem we treat env==NULL as meaning 'use the default'
2700 environ[0] = Nullch;
2701 for (; *env; env++) {
2702 if (!(s = strchr(*env,'=')))
2708 sv = newSVpv(s--,0);
2709 (void)hv_store(hv, *env, s - *env, sv, 0);
2711 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
2712 /* Sins of the RTL. See note in my_setenv(). */
2713 (void)PerlEnv_putenv(savepv(*env));
2717 #ifdef DYNAMIC_ENV_FETCH
2718 HvNAME(hv) = savepv(ENV_HV_NAME);
2722 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
2723 sv_setiv(GvSV(tmpgv), (IV)getpid());
2732 s = PerlEnv_getenv("PERL5LIB");
2736 incpush(PerlEnv_getenv("PERLLIB"), FALSE);
2738 /* Treat PERL5?LIB as a possible search list logical name -- the
2739 * "natural" VMS idiom for a Unix path string. We allow each
2740 * element to be a set of |-separated directories for compatibility.
2744 if (my_trnlnm("PERL5LIB",buf,0))
2745 do { incpush(buf,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
2747 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE);
2751 /* Use the ~-expanded versions of APPLLIB (undocumented),
2752 ARCHLIB PRIVLIB SITEARCH and SITELIB
2755 incpush(APPLLIB_EXP, TRUE);
2759 incpush(ARCHLIB_EXP, FALSE);
2762 #define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
2765 incpush(PRIVLIB_EXP, TRUE);
2767 incpush(PRIVLIB_EXP, FALSE);
2771 incpush(SITEARCH_EXP, FALSE);
2775 incpush(SITELIB_EXP, TRUE);
2777 incpush(SITELIB_EXP, FALSE);
2781 incpush(".", FALSE);
2785 # define PERLLIB_SEP ';'
2788 # define PERLLIB_SEP '|'
2790 # define PERLLIB_SEP ':'
2793 #ifndef PERLLIB_MANGLE
2794 # define PERLLIB_MANGLE(s,n) (s)
2798 incpush(char *p, int addsubdirs)
2800 SV *subdir = Nullsv;
2806 subdir = sv_newmortal();
2807 if (!PL_archpat_auto) {
2808 STRLEN len = (sizeof(ARCHNAME) + strlen(PL_patchlevel)
2809 + sizeof("//auto"));
2810 New(55, PL_archpat_auto, len, char);
2811 sprintf(PL_archpat_auto, "/%s/%s/auto", ARCHNAME, PL_patchlevel);
2813 for (len = sizeof(ARCHNAME) + 2;
2814 PL_archpat_auto[len] != '\0' && PL_archpat_auto[len] != '/'; len++)
2815 if (PL_archpat_auto[len] == '.') PL_archpat_auto[len] = '_';
2820 /* Break at all separators */
2822 SV *libdir = NEWSV(55,0);
2825 /* skip any consecutive separators */
2826 while ( *p == PERLLIB_SEP ) {
2827 /* Uncomment the next line for PATH semantics */
2828 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
2832 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
2833 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
2838 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
2839 p = Nullch; /* break out */
2843 * BEFORE pushing libdir onto @INC we may first push version- and
2844 * archname-specific sub-directories.
2847 struct stat tmpstatbuf;
2852 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
2854 while (unix[len-1] == '/') len--; /* Cosmetic */
2855 sv_usepvn(libdir,unix,len);
2858 PerlIO_printf(PerlIO_stderr(),
2859 "Failed to unixify @INC element \"%s\"\n",
2862 /* .../archname/version if -d .../archname/version/auto */
2863 sv_setsv(subdir, libdir);
2864 sv_catpv(subdir, PL_archpat_auto);
2865 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2866 S_ISDIR(tmpstatbuf.st_mode))
2867 av_push(GvAVn(PL_incgv),
2868 newSVpvn(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2870 /* .../archname if -d .../archname/auto */
2871 sv_insert(subdir, SvCUR(libdir) + sizeof(ARCHNAME),
2872 strlen(PL_patchlevel) + 1, "", 0);
2873 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2874 S_ISDIR(tmpstatbuf.st_mode))
2875 av_push(GvAVn(PL_incgv),
2876 newSVpvn(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2879 /* finally push this lib directory on the end of @INC */
2880 av_push(GvAVn(PL_incgv), libdir);
2885 STATIC struct perl_thread *
2888 struct perl_thread *thr;
2891 Newz(53, thr, 1, struct perl_thread);
2892 PL_curcop = &PL_compiling;
2893 thr->cvcache = newHV();
2894 thr->threadsv = newAV();
2895 /* thr->threadsvp is set when find_threadsv is called */
2896 thr->specific = newAV();
2897 thr->errhv = newHV();
2898 thr->flags = THRf_R_JOINABLE;
2899 MUTEX_INIT(&thr->mutex);
2900 /* Handcraft thrsv similarly to mess_sv */
2901 New(53, PL_thrsv, 1, SV);
2902 Newz(53, xpv, 1, XPV);
2903 SvFLAGS(PL_thrsv) = SVt_PV;
2904 SvANY(PL_thrsv) = (void*)xpv;
2905 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
2906 SvPVX(PL_thrsv) = (char*)thr;
2907 SvCUR_set(PL_thrsv, sizeof(thr));
2908 SvLEN_set(PL_thrsv, sizeof(thr));
2909 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
2910 thr->oursv = PL_thrsv;
2911 PL_chopset = " \n-";
2914 MUTEX_LOCK(&PL_threads_mutex);
2919 MUTEX_UNLOCK(&PL_threads_mutex);
2921 #ifdef HAVE_THREAD_INTERN
2922 init_thread_intern(thr);
2925 #ifdef SET_THREAD_SELF
2926 SET_THREAD_SELF(thr);
2928 thr->self = pthread_self();
2929 #endif /* SET_THREAD_SELF */
2933 * These must come after the SET_THR because sv_setpvn does
2934 * SvTAINT and the taint fields require dTHR.
2936 PL_toptarget = NEWSV(0,0);
2937 sv_upgrade(PL_toptarget, SVt_PVFM);
2938 sv_setpvn(PL_toptarget, "", 0);
2939 PL_bodytarget = NEWSV(0,0);
2940 sv_upgrade(PL_bodytarget, SVt_PVFM);
2941 sv_setpvn(PL_bodytarget, "", 0);
2942 PL_formtarget = PL_bodytarget;
2943 thr->errsv = newSVpvn("", 0);
2944 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
2947 PL_regcompp = FUNC_NAME_TO_PTR(pregcomp);
2948 PL_regexecp = FUNC_NAME_TO_PTR(regexec_flags);
2950 PL_reginterp_cnt = 0;
2954 #endif /* USE_THREADS */
2957 call_list(I32 oldscope, AV *paramList)
2960 line_t oldline = PL_curcop->cop_line;
2965 while (AvFILL(paramList) >= 0) {
2966 CV *cv = (CV*)av_shift(paramList);
2974 PUSHMARK(PL_stack_sp);
2975 perl_call_sv((SV*)cv, G_EVAL|G_DISCARD);
2976 (void)SvPV(atsv, len);
2979 PL_curcop = &PL_compiling;
2980 PL_curcop->cop_line = oldline;
2981 if (paramList == PL_beginav)
2982 sv_catpv(atsv, "BEGIN failed--compilation aborted");
2984 sv_catpv(atsv, "END failed--cleanup aborted");
2985 while (PL_scopestack_ix > oldscope)
2987 croak("%s", SvPVX(atsv));
2995 /* my_exit() was called */
2996 while (PL_scopestack_ix > oldscope)
2999 PL_curstash = PL_defstash;
3001 call_list(oldscope, PL_endav);
3003 PL_curcop = &PL_compiling;
3004 PL_curcop->cop_line = oldline;
3005 if (PL_statusvalue) {
3006 if (paramList == PL_beginav)
3007 croak("BEGIN failed--compilation aborted");
3009 croak("END failed--cleanup aborted");
3014 if (!PL_restartop) {
3015 PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
3020 PL_curcop = &PL_compiling;
3021 PL_curcop->cop_line = oldline;
3033 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3034 thr, (unsigned long) status));
3043 STATUS_NATIVE_SET(status);
3050 my_failure_exit(void)
3053 if (vaxc$errno & 1) {
3054 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3055 STATUS_NATIVE_SET(44);
3058 if (!vaxc$errno && errno) /* unlikely */
3059 STATUS_NATIVE_SET(44);
3061 STATUS_NATIVE_SET(vaxc$errno);
3066 STATUS_POSIX_SET(errno);
3068 exitstatus = STATUS_POSIX >> 8;
3069 if (exitstatus & 255)
3070 STATUS_POSIX_SET(exitstatus);
3072 STATUS_POSIX_SET(255);
3082 register PERL_CONTEXT *cx;
3087 SvREFCNT_dec(PL_e_script);
3088 PL_e_script = Nullsv;
3091 POPSTACK_TO(PL_mainstack);
3092 if (cxstack_ix >= 0) {
3095 POPBLOCK(cx,PL_curpm);
3104 #endif /* PERL_OBJECT */
3110 read_e_script(CPerlObj *pPerl, int idx, SV *buf_sv, int maxlen)
3112 read_e_script(int idx, SV *buf_sv, int maxlen)
3116 p = SvPVX(PL_e_script);
3117 nl = strchr(p, '\n');
3118 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3120 filter_del(read_e_script);
3123 sv_catpvn(buf_sv, p, nl-p);
3124 sv_chop(PL_e_script, nl);