3 * Copyright (c) 1987-1998 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 = newSVpv("\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(NeXT) && defined(__DYNAMIC__)
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 = newSVpv("",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 ";
756 if (s = moreswitches(s))
766 if (PL_euid != PL_uid || PL_egid != PL_gid)
767 croak("No -e allowed in setuid scripts");
769 PL_e_script = newSVpv("",0);
770 filter_add(read_e_script, NULL);
773 sv_catpv(PL_e_script, s);
775 sv_catpv(PL_e_script, argv[1]);
779 croak("No code specified for -e");
780 sv_catpv(PL_e_script, "\n");
783 case 'I': /* -I handled both here and in moreswitches() */
785 if (!*++s && (s=argv[1]) != Nullch) {
788 while (s && isSPACE(*s))
792 for (e = s; *e && !isSPACE(*e); e++) ;
799 } /* XXX else croak? */
803 PL_preprocess = TRUE;
813 PL_preambleav = newAV();
814 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
816 PL_Sv = newSVpv("print myconfig();",0);
818 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
820 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
822 #if defined(DEBUGGING) || defined(MULTIPLICITY)
823 sv_catpv(PL_Sv,"\" Compile-time options:");
825 sv_catpv(PL_Sv," DEBUGGING");
828 sv_catpv(PL_Sv," MULTIPLICITY");
830 sv_catpv(PL_Sv,"\\n\",");
832 #if defined(LOCAL_PATCH_COUNT)
833 if (LOCAL_PATCH_COUNT > 0) {
835 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
836 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
837 if (PL_localpatches[i])
838 sv_catpvf(PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
842 sv_catpvf(PL_Sv,"\" Built under %s\\n\"",OSNAME);
845 sv_catpvf(PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
847 sv_catpvf(PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
852 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
853 print \" \\%ENV:\\n @env\\n\" if @env; \
854 print \" \\@INC:\\n @INC\\n\";");
857 PL_Sv = newSVpv("config_vars(qw(",0);
858 sv_catpv(PL_Sv, ++s);
859 sv_catpv(PL_Sv, "))");
862 av_push(PL_preambleav, PL_Sv);
863 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
869 PL_cddir = savepv(s);
874 if (!*++s || isSPACE(*s)) {
878 /* catch use of gnu style long options */
879 if (strEQ(s, "version")) {
883 if (strEQ(s, "help")) {
890 croak("Unrecognized switch: -%s (-h will show valid options)",s);
895 if (!PL_tainting && (s = PerlEnv_getenv("PERL5OPT"))) {
898 if (*s == '-' && *(s+1) == 'T')
911 if (!strchr("DIMUdmw", *s))
912 croak("Illegal switch in PERL5OPT: -%c", *s);
919 scriptname = argv[0];
922 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
924 else if (scriptname == Nullch) {
926 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
934 open_script(scriptname,dosearch,sv,&fdscript);
936 validate_suid(validarg, scriptname,fdscript);
941 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
942 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
943 CvUNIQUE_on(PL_compcv);
945 PL_comppad = newAV();
946 av_push(PL_comppad, Nullsv);
947 PL_curpad = AvARRAY(PL_comppad);
948 PL_comppad_name = newAV();
949 PL_comppad_name_fill = 0;
950 PL_min_intro_pending = 0;
953 av_store(PL_comppad_name, 0, newSVpv("@_", 2));
954 PL_curpad[0] = (SV*)newAV();
955 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
956 CvOWNER(PL_compcv) = 0;
957 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
958 MUTEX_INIT(CvMUTEXP(PL_compcv));
959 #endif /* USE_THREADS */
961 comppadlist = newAV();
962 AvREAL_off(comppadlist);
963 av_store(comppadlist, 0, (SV*)PL_comppad_name);
964 av_store(comppadlist, 1, (SV*)PL_comppad);
965 CvPADLIST(PL_compcv) = comppadlist;
967 boot_core_UNIVERSAL();
970 (*xsinit)(PERL_OBJECT_THIS); /* in case linked C routines want magical variables */
971 #if defined(VMS) || defined(WIN32) || defined(DJGPP)
975 init_predump_symbols();
976 /* init_postdump_symbols not currently designed to be called */
977 /* more than once (ENV isn't cleared first, for example) */
978 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
980 init_postdump_symbols(argc,argv,env);
984 /* now parse the script */
986 SETERRNO(0,SS$_NORMAL);
988 if (yyparse() || PL_error_count) {
990 croak("%s had compilation errors.\n", PL_origfilename);
992 croak("Execution of %s aborted due to compilation errors.\n",
996 PL_curcop->cop_line = 0;
997 PL_curstash = PL_defstash;
998 PL_preprocess = FALSE;
1000 SvREFCNT_dec(PL_e_script);
1001 PL_e_script = Nullsv;
1004 /* now that script is parsed, we can modify record separator */
1005 SvREFCNT_dec(PL_rs);
1006 PL_rs = SvREFCNT_inc(PL_nrs);
1007 sv_setsv(perl_get_sv("/", TRUE), PL_rs);
1011 if (ckWARN(WARN_ONCE))
1012 gv_check(PL_defstash);
1018 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1019 dump_mstats("after compilation:");
1032 perl_run(PerlInterpreter *sv_interp)
1041 if (!(PL_curinterp = sv_interp))
1045 oldscope = PL_scopestack_ix;
1050 cxstack_ix = -1; /* start context stack again */
1053 /* my_exit() was called */
1054 while (PL_scopestack_ix > oldscope)
1057 PL_curstash = PL_defstash;
1059 call_list(oldscope, PL_endav);
1061 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1062 dump_mstats("after execution: ");
1065 return STATUS_NATIVE_EXPORT;
1067 if (!PL_restartop) {
1068 PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
1073 POPSTACK_TO(PL_mainstack);
1077 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1078 PL_sawampersand ? "Enabling" : "Omitting"));
1080 if (!PL_restartop) {
1081 DEBUG_x(dump_all());
1082 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1083 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%lx\n",
1084 (unsigned long) thr));
1087 PerlIO_printf(PerlIO_stderr(), "%s syntax OK\n", PL_origfilename);
1090 if (PERLDB_SINGLE && PL_DBsingle)
1091 sv_setiv(PL_DBsingle, 1);
1093 call_list(oldscope, PL_initav);
1099 PL_op = PL_restartop;
1103 else if (PL_main_start) {
1104 CvDEPTH(PL_main_cv) = 1;
1105 PL_op = PL_main_start;
1115 perl_get_sv(const char *name, I32 create)
1119 if (name[1] == '\0' && !isALPHA(name[0])) {
1120 PADOFFSET tmp = find_threadsv(name);
1121 if (tmp != NOT_IN_PAD) {
1123 return THREADSV(tmp);
1126 #endif /* USE_THREADS */
1127 gv = gv_fetchpv(name, create, SVt_PV);
1134 perl_get_av(const char *name, I32 create)
1136 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1145 perl_get_hv(const char *name, I32 create)
1147 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1156 perl_get_cv(const char *name, I32 create)
1158 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1159 /* XXX unsafe for threads if eval_owner isn't held */
1160 if (create && !GvCVu(gv))
1161 return newSUB(start_subparse(FALSE, 0),
1162 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1170 /* Be sure to refetch the stack pointer after calling these routines. */
1173 perl_call_argv(const char *sub_name, I32 flags, register char **argv)
1175 /* See G_* flags in cop.h */
1176 /* null terminated arg list */
1183 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1188 return perl_call_pv(sub_name, flags);
1192 perl_call_pv(const char *sub_name, I32 flags)
1193 /* name of the subroutine */
1194 /* See G_* flags in cop.h */
1196 return perl_call_sv((SV*)perl_get_cv(sub_name, TRUE), flags);
1200 perl_call_method(const char *methname, I32 flags)
1201 /* name of the subroutine */
1202 /* See G_* flags in cop.h */
1208 XPUSHs(sv_2mortal(newSVpv(methname,0)));
1213 return perl_call_sv(*PL_stack_sp--, flags);
1216 /* May be called with any of a CV, a GV, or an SV containing the name. */
1218 perl_call_sv(SV *sv, I32 flags)
1220 /* See G_* flags in cop.h */
1223 LOGOP myop; /* fake syntax tree node */
1227 bool oldcatch = CATCH_GET;
1232 if (flags & G_DISCARD) {
1237 Zero(&myop, 1, LOGOP);
1238 myop.op_next = Nullop;
1239 if (!(flags & G_NOARGS))
1240 myop.op_flags |= OPf_STACKED;
1241 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1242 (flags & G_ARRAY) ? OPf_WANT_LIST :
1247 EXTEND(PL_stack_sp, 1);
1248 *++PL_stack_sp = sv;
1250 oldscope = PL_scopestack_ix;
1252 if (PERLDB_SUB && PL_curstash != PL_debstash
1253 /* Handle first BEGIN of -d. */
1254 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1255 /* Try harder, since this may have been a sighandler, thus
1256 * curstash may be meaningless. */
1257 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1258 && !(flags & G_NODEBUG))
1259 PL_op->op_private |= OPpENTERSUB_DB;
1261 if (flags & G_EVAL) {
1262 cLOGOP->op_other = PL_op;
1264 /* we're trying to emulate pp_entertry() here */
1266 register PERL_CONTEXT *cx;
1267 I32 gimme = GIMME_V;
1272 push_return(PL_op->op_next);
1273 PUSHBLOCK(cx, CXt_EVAL, PL_stack_sp);
1275 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1278 if (flags & G_KEEPERR)
1293 /* my_exit() was called */
1294 PL_curstash = PL_defstash;
1298 croak("Callback called exit");
1303 PL_op = PL_restartop;
1307 PL_stack_sp = PL_stack_base + oldmark;
1308 if (flags & G_ARRAY)
1312 *++PL_stack_sp = &PL_sv_undef;
1320 if (PL_op == (OP*)&myop)
1321 PL_op = pp_entersub(ARGS);
1324 retval = PL_stack_sp - (PL_stack_base + oldmark);
1325 if ((flags & G_EVAL) && !(flags & G_KEEPERR))
1329 if (flags & G_EVAL) {
1330 if (PL_scopestack_ix > oldscope) {
1334 register PERL_CONTEXT *cx;
1346 CATCH_SET(oldcatch);
1348 if (flags & G_DISCARD) {
1349 PL_stack_sp = PL_stack_base + oldmark;
1358 /* Eval a string. The G_EVAL flag is always assumed. */
1361 perl_eval_sv(SV *sv, I32 flags)
1363 /* See G_* flags in cop.h */
1366 UNOP myop; /* fake syntax tree node */
1367 I32 oldmark = SP - PL_stack_base;
1374 if (flags & G_DISCARD) {
1381 Zero(PL_op, 1, UNOP);
1382 EXTEND(PL_stack_sp, 1);
1383 *++PL_stack_sp = sv;
1384 oldscope = PL_scopestack_ix;
1386 if (!(flags & G_NOARGS))
1387 myop.op_flags = OPf_STACKED;
1388 myop.op_next = Nullop;
1389 myop.op_type = OP_ENTEREVAL;
1390 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1391 (flags & G_ARRAY) ? OPf_WANT_LIST :
1393 if (flags & G_KEEPERR)
1394 myop.op_flags |= OPf_SPECIAL;
1404 /* my_exit() was called */
1405 PL_curstash = PL_defstash;
1409 croak("Callback called exit");
1414 PL_op = PL_restartop;
1418 PL_stack_sp = PL_stack_base + oldmark;
1419 if (flags & G_ARRAY)
1423 *++PL_stack_sp = &PL_sv_undef;
1428 if (PL_op == (OP*)&myop)
1429 PL_op = pp_entereval(ARGS);
1432 retval = PL_stack_sp - (PL_stack_base + oldmark);
1433 if (!(flags & G_KEEPERR))
1438 if (flags & G_DISCARD) {
1439 PL_stack_sp = PL_stack_base + oldmark;
1449 perl_eval_pv(const char *p, I32 croak_on_error)
1452 SV* sv = newSVpv(p, 0);
1455 perl_eval_sv(sv, G_SCALAR);
1462 if (croak_on_error && SvTRUE(ERRSV)) {
1464 croak(SvPVx(ERRSV, n_a));
1470 /* Require a module. */
1473 perl_require_pv(const char *pv)
1477 PUSHSTACKi(PERLSI_REQUIRE);
1479 sv = sv_newmortal();
1480 sv_setpv(sv, "require '");
1483 perl_eval_sv(sv, G_DISCARD);
1489 magicname(char *sym, char *name, I32 namlen)
1493 if (gv = gv_fetchpv(sym,TRUE, SVt_PV))
1494 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1498 usage(char *name) /* XXX move this out into a module ? */
1501 /* This message really ought to be max 23 lines.
1502 * Removed -h because the user already knows that opton. Others? */
1504 static char *usage_msg[] = {
1505 "-0[octal] specify record separator (\\0, if no argument)",
1506 "-a autosplit mode with -n or -p (splits $_ into @F)",
1507 "-c check syntax only (runs BEGIN and END blocks)",
1508 "-d[:debugger] run scripts under debugger",
1509 "-D[number/list] set debugging flags (argument is a bit mask or flags)",
1510 "-e 'command' one line of script. Several -e's allowed. Omit [programfile].",
1511 "-F/pattern/ split() pattern for autosplit (-a). The //'s are optional.",
1512 "-i[extension] edit <> files in place (make backup if extension supplied)",
1513 "-Idirectory specify @INC/#include directory (may be used more than once)",
1514 "-l[octal] enable line ending processing, specifies line terminator",
1515 "-[mM][-]module.. executes `use/no module...' before executing your script.",
1516 "-n assume 'while (<>) { ... }' loop around your script",
1517 "-p assume loop like -n but print line also like sed",
1518 "-P run script through C preprocessor before compilation",
1519 "-s enable some switch parsing for switches after script name",
1520 "-S look for the script using PATH environment variable",
1521 "-T turn on tainting checks",
1522 "-u dump core after parsing script",
1523 "-U allow unsafe operations",
1524 "-v print version number, patchlevel plus VERY IMPORTANT perl info",
1525 "-V[:variable] print perl configuration information",
1526 "-w TURN WARNINGS ON FOR COMPILATION OF YOUR SCRIPT. Recommended.",
1527 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
1531 char **p = usage_msg;
1533 printf("\nUsage: %s [switches] [--] [programfile] [arguments]", name);
1535 printf("\n %s", *p++);
1538 /* This routine handles any switches that can be given during run */
1541 moreswitches(char *s)
1550 rschar = scan_oct(s, 4, &numlen);
1551 SvREFCNT_dec(PL_nrs);
1552 if (rschar & ~((U8)~0))
1553 PL_nrs = &PL_sv_undef;
1554 else if (!rschar && numlen >= 2)
1555 PL_nrs = newSVpv("", 0);
1558 PL_nrs = newSVpv(&ch, 1);
1564 PL_splitstr = savepv(s + 1);
1578 if (*s == ':' || *s == '=') {
1579 my_setenv("PERL5DB", form("use Devel::%s;", ++s));
1583 PL_perldb = PERLDB_ALL;
1590 if (isALPHA(s[1])) {
1591 static char debopts[] = "psltocPmfrxuLHXDS";
1594 for (s++; *s && (d = strchr(debopts,*s)); s++)
1595 PL_debug |= 1 << (d - debopts);
1598 PL_debug = atoi(s+1);
1599 for (s++; isDIGIT(*s); s++) ;
1601 PL_debug |= 0x80000000;
1603 warn("Recompile perl with -DDEBUGGING to use -D switch\n");
1604 for (s++; isALNUM(*s); s++) ;
1609 usage(PL_origargv[0]);
1613 Safefree(PL_inplace);
1614 PL_inplace = savepv(s+1);
1616 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
1619 if (*s == '-') /* Additional switches on #! line. */
1623 case 'I': /* -I handled both here and in parse_perl() */
1626 while (*s && isSPACE(*s))
1630 for (e = s; *e && !isSPACE(*e); e++) ;
1631 p = savepvn(s, e-s);
1637 croak("No space allowed after -I");
1645 PL_ors = savepv("\n");
1647 *PL_ors = scan_oct(s, 3 + (*s == '0'), &numlen);
1652 if (RsPARA(PL_nrs)) {
1657 PL_ors = SvPV(PL_nrs, PL_orslen);
1658 PL_ors = savepvn(PL_ors, PL_orslen);
1662 forbid_setid("-M"); /* XXX ? */
1665 forbid_setid("-m"); /* XXX ? */
1670 /* -M-foo == 'no foo' */
1671 if (*s == '-') { use = "no "; ++s; }
1672 sv = newSVpv(use,0);
1674 /* We allow -M'Module qw(Foo Bar)' */
1675 while(isALNUM(*s) || *s==':') ++s;
1677 sv_catpv(sv, start);
1678 if (*(start-1) == 'm') {
1680 croak("Can't use '%c' after -mname", *s);
1681 sv_catpv( sv, " ()");
1684 sv_catpvn(sv, start, s-start);
1685 sv_catpv(sv, " split(/,/,q{");
1690 if (PL_preambleav == NULL)
1691 PL_preambleav = newAV();
1692 av_push(PL_preambleav, sv);
1695 croak("No space allowed after -%c", *(s-1));
1707 PL_doswitches = TRUE;
1712 croak("Too late for \"-T\" option");
1716 PL_do_undump = TRUE;
1724 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
1725 printf("\nThis is perl, version %d.%03d_%02d built for %s",
1726 PERL_REVISION, PERL_VERSION, PERL_SUBVERSION, ARCHNAME);
1728 printf("\nThis is perl, version %s built for %s",
1729 PL_patchlevel, ARCHNAME);
1731 #if defined(LOCAL_PATCH_COUNT)
1732 if (LOCAL_PATCH_COUNT > 0)
1733 printf("\n(with %d registered patch%s, see perl -V for more detail)",
1734 LOCAL_PATCH_COUNT, (LOCAL_PATCH_COUNT!=1) ? "es" : "");
1737 printf("\n\nCopyright 1987-1998, Larry Wall\n");
1739 printf("\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
1742 printf("djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n");
1743 printf("djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1998\n");
1746 printf("\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
1747 "Version 5 port Copyright (c) 1994-1998, Andreas Kaiser, Ilya Zakharevich\n");
1750 printf("atariST series port, ++jrb bammi@cadence.com\n");
1753 printf("BeOS port Copyright Tom Spindler, 1997-1998\n");
1756 printf("MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1998\n");
1759 printf("MVS (OS390) port by Mortice Kern Systems, 1997-1998\n");
1762 printf("Stratus VOS port by Paul_Green@stratus.com, 1997-1998\n");
1765 printf("VM/ESA port by Neale Ferguson, 1998\n");
1768 printf("BS2000 (POSIX) port by Start Amadeus GmbH, 1998\n");
1771 printf("MiNT port by Guido Flohr, 1997\n");
1773 #ifdef BINARY_BUILD_NOTICE
1774 BINARY_BUILD_NOTICE;
1777 Perl may be copied only under the terms of either the Artistic License or the\n\
1778 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
1779 Complete documentation for Perl, including FAQ lists, should be found on\n\
1780 this system using `man perl' or `perldoc perl'. If you have access to the\n\
1781 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
1784 if (! (PL_dowarn & G_WARN_ALL_MASK))
1785 PL_dowarn |= G_WARN_ON;
1789 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
1790 PL_compiling.cop_warnings = WARN_ALL ;
1794 PL_dowarn = G_WARN_ALL_OFF;
1795 PL_compiling.cop_warnings = WARN_NONE ;
1800 if (s[1] == '-') /* Additional switches on #! line. */
1805 #if defined(WIN32) || !defined(PERL_STRICT_CR)
1811 #ifdef ALTERNATE_SHEBANG
1812 case 'S': /* OS/2 needs -S on "extproc" line. */
1820 croak("Can't emulate -%.1s on #! line",s);
1825 /* compliments of Tom Christiansen */
1827 /* unexec() can be found in the Gnu emacs distribution */
1828 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
1839 prog = newSVpv(BIN_EXP, 0);
1840 sv_catpv(prog, "/perl");
1841 file = newSVpv(PL_origfilename, 0);
1842 sv_catpv(file, ".perldump");
1844 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
1845 /* unexec prints msg to stderr in case of failure */
1846 PerlProc_exit(status);
1849 # include <lib$routines.h>
1850 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
1852 ABORT(); /* for use with undump */
1857 /* initialize curinterp */
1862 #ifdef PERL_OBJECT /* XXX kludge */
1865 PL_chopset = " \n-"; \
1866 PL_copline = NOLINE; \
1867 PL_curcop = &PL_compiling;\
1868 PL_curcopdb = NULL; \
1871 PL_dumpindent = 4; \
1872 PL_laststatval = -1; \
1873 PL_laststype = OP_STAT; \
1874 PL_maxscream = -1; \
1875 PL_maxsysfd = MAXSYSFD; \
1876 PL_statname = Nullsv; \
1877 PL_tmps_floor = -1; \
1879 PL_op_mask = NULL; \
1881 PL_laststatval = -1; \
1882 PL_laststype = OP_STAT; \
1883 PL_mess_sv = Nullsv; \
1884 PL_splitstr = " "; \
1885 PL_generation = 100; \
1886 PL_exitlist = NULL; \
1887 PL_exitlistlen = 0; \
1889 PL_in_clean_objs = FALSE; \
1890 PL_in_clean_all = FALSE; \
1891 PL_profiledata = NULL; \
1893 PL_rsfp_filters = Nullav; \
1898 # ifdef MULTIPLICITY
1899 # define PERLVAR(var,type)
1900 # define PERLVARI(var,type,init) PL_curinterp->var = init;
1901 # define PERLVARIC(var,type,init) PL_curinterp->var = init;
1902 # include "intrpvar.h"
1903 # ifndef USE_THREADS
1904 # include "thrdvar.h"
1910 # define PERLVAR(var,type)
1911 # define PERLVARI(var,type,init) PL_##var = init;
1912 # define PERLVARIC(var,type,init) PL_##var = init;
1913 # include "intrpvar.h"
1914 # ifndef USE_THREADS
1915 # include "thrdvar.h"
1926 init_main_stash(void)
1931 /* Note that strtab is a rather special HV. Assumptions are made
1932 about not iterating on it, and not adding tie magic to it.
1933 It is properly deallocated in perl_destruct() */
1934 PL_strtab = newHV();
1936 MUTEX_INIT(&PL_strtab_mutex);
1938 HvSHAREKEYS_off(PL_strtab); /* mandatory */
1939 hv_ksplit(PL_strtab, 512);
1941 PL_curstash = PL_defstash = newHV();
1942 PL_curstname = newSVpv("main",4);
1943 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
1944 SvREFCNT_dec(GvHV(gv));
1945 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
1947 HvNAME(PL_defstash) = savepv("main");
1948 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
1949 GvMULTI_on(PL_incgv);
1950 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
1951 GvMULTI_on(PL_hintgv);
1952 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
1953 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
1954 GvMULTI_on(PL_errgv);
1955 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
1956 GvMULTI_on(PL_replgv);
1957 (void)form("%240s",""); /* Preallocate temp - for immediate signals. */
1958 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
1959 sv_setpvn(ERRSV, "", 0);
1960 PL_curstash = PL_defstash;
1961 PL_compiling.cop_stash = PL_defstash;
1962 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
1963 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
1964 /* We must init $/ before switches are processed. */
1965 sv_setpvn(perl_get_sv("/", TRUE), "\n", 1);
1969 open_script(char *scriptname, bool dosearch, SV *sv, int *fdscript)
1977 PL_origfilename = savepv("-e");
1980 /* if find_script() returns, it returns a malloc()-ed value */
1981 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
1983 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
1984 char *s = scriptname + 8;
1985 *fdscript = atoi(s);
1989 scriptname = savepv(s + 1);
1990 Safefree(PL_origfilename);
1991 PL_origfilename = scriptname;
1996 PL_curcop->cop_filegv = gv_fetchfile(PL_origfilename);
1997 if (strEQ(PL_origfilename,"-"))
1999 if (*fdscript >= 0) {
2000 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2001 #if defined(HAS_FCNTL) && defined(F_SETFD)
2003 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2006 else if (PL_preprocess) {
2007 char *cpp_cfg = CPPSTDIN;
2008 SV *cpp = newSVpv("",0);
2009 SV *cmd = NEWSV(0,0);
2011 if (strEQ(cpp_cfg, "cppstdin"))
2012 sv_catpvf(cpp, "%s/", BIN_EXP);
2013 sv_catpv(cpp, cpp_cfg);
2016 sv_catpv(sv,PRIVLIB_EXP);
2020 sed %s -e \"/^[^#]/b\" \
2021 -e \"/^#[ ]*include[ ]/b\" \
2022 -e \"/^#[ ]*define[ ]/b\" \
2023 -e \"/^#[ ]*if[ ]/b\" \
2024 -e \"/^#[ ]*ifdef[ ]/b\" \
2025 -e \"/^#[ ]*ifndef[ ]/b\" \
2026 -e \"/^#[ ]*else/b\" \
2027 -e \"/^#[ ]*elif[ ]/b\" \
2028 -e \"/^#[ ]*undef[ ]/b\" \
2029 -e \"/^#[ ]*endif/b\" \
2032 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2036 %s %s -e '/^[^#]/b' \
2037 -e '/^#[ ]*include[ ]/b' \
2038 -e '/^#[ ]*define[ ]/b' \
2039 -e '/^#[ ]*if[ ]/b' \
2040 -e '/^#[ ]*ifdef[ ]/b' \
2041 -e '/^#[ ]*ifndef[ ]/b' \
2042 -e '/^#[ ]*else/b' \
2043 -e '/^#[ ]*elif[ ]/b' \
2044 -e '/^#[ ]*undef[ ]/b' \
2045 -e '/^#[ ]*endif/b' \
2050 %s %s -e '/^[^#]/b' \
2051 -e '/^#[ ]*include[ ]/b' \
2052 -e '/^#[ ]*define[ ]/b' \
2053 -e '/^#[ ]*if[ ]/b' \
2054 -e '/^#[ ]*ifdef[ ]/b' \
2055 -e '/^#[ ]*ifndef[ ]/b' \
2056 -e '/^#[ ]*else/b' \
2057 -e '/^#[ ]*elif[ ]/b' \
2058 -e '/^#[ ]*undef[ ]/b' \
2059 -e '/^#[ ]*endif/b' \
2068 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2070 scriptname, cpp, sv, CPPMINUS);
2071 PL_doextract = FALSE;
2072 #ifdef IAMSUID /* actually, this is caught earlier */
2073 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2075 (void)seteuid(PL_uid); /* musn't stay setuid root */
2078 (void)setreuid((Uid_t)-1, PL_uid);
2080 #ifdef HAS_SETRESUID
2081 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2083 PerlProc_setuid(PL_uid);
2087 if (PerlProc_geteuid() != PL_uid)
2088 croak("Can't do seteuid!\n");
2090 #endif /* IAMSUID */
2091 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2095 else if (!*scriptname) {
2096 forbid_setid("program input from stdin");
2097 PL_rsfp = PerlIO_stdin();
2100 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2101 #if defined(HAS_FCNTL) && defined(F_SETFD)
2103 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2108 #ifndef IAMSUID /* in case script is not readable before setuid */
2110 PerlLIO_stat(SvPVX(GvSV(PL_curcop->cop_filegv)),&PL_statbuf) >= 0 &&
2111 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2114 PerlProc_execv(form("%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv);
2115 croak("Can't do setuid\n");
2119 croak("Can't open perl script \"%s\": %s\n",
2120 SvPVX(GvSV(PL_curcop->cop_filegv)), Strerror(errno));
2125 * I_SYSSTATVFS HAS_FSTATVFS
2127 * I_STATFS HAS_FSTATFS
2128 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2129 * here so that metaconfig picks them up. */
2133 fd_on_nosuid_fs(int fd)
2138 * Preferred order: fstatvfs(), fstatfs(), getmntent().
2139 * fstatvfs() is UNIX98.
2141 * getmntent() is O(number-of-mounted-filesystems) and can hang.
2144 # ifdef HAS_FSTATVFS
2145 struct statvfs stfs;
2146 check_okay = fstatvfs(fd, &stfs) == 0;
2147 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2149 # if defined(HAS_FSTATFS) && defined(HAS_STRUCT_STATFS_FLAGS)
2151 check_okay = fstatfs(fd, &stfs) == 0;
2152 # undef PERL_MOUNT_NOSUID
2153 # if !defined(PERL_MOUNT_NOSUID) && defined(MNT_NOSUID)
2154 # define PERL_MOUNT_NOSUID MNT_NOSUID
2156 # if !defined(PERL_MOUNT_NOSUID) && defined(MS_NOSUID)
2157 # define PERL_MOUNT_NOSUID MS_NOSUID
2159 # if !defined(PERL_MOUNT_NOSUID) && defined(M_NOSUID)
2160 # define PERL_MOUNT_NOSUID M_NOSUID
2162 # ifdef PERL_MOUNT_NOSUID
2163 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2166 # if defined(HAS_GETMNTENT) && defined(HAS_HASMNTOPT) && defined(MNTOPT_NOSUID)
2167 FILE *mtab = fopen("/etc/mtab", "r");
2168 struct mntent *entry;
2169 struct stat stb, fsb;
2171 if (mtab && (fstat(fd, &stb) == 0)) {
2172 while (entry = getmntent(mtab)) {
2173 if (stat(entry->mnt_dir, &fsb) == 0
2174 && fsb.st_dev == stb.st_dev)
2176 /* found the filesystem */
2178 if (hasmntopt(entry, MNTOPT_NOSUID))
2181 } /* A single fs may well fail its stat(). */
2186 # endif /* mntent */
2187 # endif /* statfs */
2188 # endif /* statvfs */
2190 croak("Can't check filesystem of script \"%s\"", PL_origfilename);
2193 #endif /* IAMSUID */
2196 validate_suid(char *validarg, char *scriptname, int fdscript)
2200 /* do we need to emulate setuid on scripts? */
2202 /* This code is for those BSD systems that have setuid #! scripts disabled
2203 * in the kernel because of a security problem. Merely defining DOSUID
2204 * in perl will not fix that problem, but if you have disabled setuid
2205 * scripts in the kernel, this will attempt to emulate setuid and setgid
2206 * on scripts that have those now-otherwise-useless bits set. The setuid
2207 * root version must be called suidperl or sperlN.NNN. If regular perl
2208 * discovers that it has opened a setuid script, it calls suidperl with
2209 * the same argv that it had. If suidperl finds that the script it has
2210 * just opened is NOT setuid root, it sets the effective uid back to the
2211 * uid. We don't just make perl setuid root because that loses the
2212 * effective uid we had before invoking perl, if it was different from the
2215 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2216 * be defined in suidperl only. suidperl must be setuid root. The
2217 * Configure script will set this up for you if you want it.
2224 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2225 croak("Can't stat script \"%s\"",PL_origfilename);
2226 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2231 #ifndef HAS_SETREUID
2232 /* On this access check to make sure the directories are readable,
2233 * there is actually a small window that the user could use to make
2234 * filename point to an accessible directory. So there is a faint
2235 * chance that someone could execute a setuid script down in a
2236 * non-accessible directory. I don't know what to do about that.
2237 * But I don't think it's too important. The manual lies when
2238 * it says access() is useful in setuid programs.
2240 if (PerlLIO_access(SvPVX(GvSV(PL_curcop->cop_filegv)),1)) /*double check*/
2241 croak("Permission denied");
2243 /* If we can swap euid and uid, then we can determine access rights
2244 * with a simple stat of the file, and then compare device and
2245 * inode to make sure we did stat() on the same file we opened.
2246 * Then we just have to make sure he or she can execute it.
2249 struct stat tmpstatbuf;
2253 setreuid(PL_euid,PL_uid) < 0
2256 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2259 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2260 croak("Can't swap uid and euid"); /* really paranoid */
2261 if (PerlLIO_stat(SvPVX(GvSV(PL_curcop->cop_filegv)),&tmpstatbuf) < 0)
2262 croak("Permission denied"); /* testing full pathname here */
2263 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2264 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2265 croak("Permission denied");
2267 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2268 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2269 (void)PerlIO_close(PL_rsfp);
2270 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2271 PerlIO_printf(PL_rsfp,
2272 "User %ld tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2273 (Filename of set-id script was %s, uid %ld gid %ld.)\n\nSincerely,\nperl\n",
2274 (long)PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2275 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
2276 SvPVX(GvSV(PL_curcop->cop_filegv)),
2277 (long)PL_statbuf.st_uid, (long)PL_statbuf.st_gid);
2278 (void)PerlProc_pclose(PL_rsfp);
2280 croak("Permission denied\n");
2284 setreuid(PL_uid,PL_euid) < 0
2286 # if defined(HAS_SETRESUID)
2287 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2290 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2291 croak("Can't reswap uid and euid");
2292 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2293 croak("Permission denied\n");
2295 #endif /* HAS_SETREUID */
2296 #endif /* IAMSUID */
2298 if (!S_ISREG(PL_statbuf.st_mode))
2299 croak("Permission denied");
2300 if (PL_statbuf.st_mode & S_IWOTH)
2301 croak("Setuid/gid script is writable by world");
2302 PL_doswitches = FALSE; /* -s is insecure in suid */
2303 PL_curcop->cop_line++;
2304 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2305 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2306 croak("No #! line");
2307 s = SvPV(PL_linestr,n_a)+2;
2309 while (!isSPACE(*s)) s++;
2310 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2311 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2312 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2313 croak("Not a perl script");
2314 while (*s == ' ' || *s == '\t') s++;
2316 * #! arg must be what we saw above. They can invoke it by
2317 * mentioning suidperl explicitly, but they may not add any strange
2318 * arguments beyond what #! says if they do invoke suidperl that way.
2320 len = strlen(validarg);
2321 if (strEQ(validarg," PHOOEY ") ||
2322 strnNE(s,validarg,len) || !isSPACE(s[len]))
2323 croak("Args must match #! line");
2326 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2327 PL_euid == PL_statbuf.st_uid)
2329 croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2330 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2331 #endif /* IAMSUID */
2333 if (PL_euid) { /* oops, we're not the setuid root perl */
2334 (void)PerlIO_close(PL_rsfp);
2337 PerlProc_execv(form("%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv);
2339 croak("Can't do setuid\n");
2342 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2344 (void)setegid(PL_statbuf.st_gid);
2347 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2349 #ifdef HAS_SETRESGID
2350 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2352 PerlProc_setgid(PL_statbuf.st_gid);
2356 if (PerlProc_getegid() != PL_statbuf.st_gid)
2357 croak("Can't do setegid!\n");
2359 if (PL_statbuf.st_mode & S_ISUID) {
2360 if (PL_statbuf.st_uid != PL_euid)
2362 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2365 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2367 #ifdef HAS_SETRESUID
2368 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2370 PerlProc_setuid(PL_statbuf.st_uid);
2374 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2375 croak("Can't do seteuid!\n");
2377 else if (PL_uid) { /* oops, mustn't run as root */
2379 (void)seteuid((Uid_t)PL_uid);
2382 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2384 #ifdef HAS_SETRESUID
2385 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2387 PerlProc_setuid((Uid_t)PL_uid);
2391 if (PerlProc_geteuid() != PL_uid)
2392 croak("Can't do seteuid!\n");
2395 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2396 croak("Permission denied\n"); /* they can't do this */
2399 else if (PL_preprocess)
2400 croak("-P not allowed for setuid/setgid script\n");
2401 else if (fdscript >= 0)
2402 croak("fd script not allowed in suidperl\n");
2404 croak("Script is not setuid/setgid in suidperl\n");
2406 /* We absolutely must clear out any saved ids here, so we */
2407 /* exec the real perl, substituting fd script for scriptname. */
2408 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2409 PerlIO_rewind(PL_rsfp);
2410 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2411 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2412 if (!PL_origargv[which])
2413 croak("Permission denied");
2414 PL_origargv[which] = savepv(form("/dev/fd/%d/%s",
2415 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
2416 #if defined(HAS_FCNTL) && defined(F_SETFD)
2417 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
2419 PerlProc_execv(form("%s/perl%s", BIN_EXP, PL_patchlevel), PL_origargv);/* try again */
2420 croak("Can't do setuid\n");
2421 #endif /* IAMSUID */
2423 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
2424 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
2426 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
2427 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
2429 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
2432 croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2433 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2434 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
2435 /* not set-id, must be wrapped */
2441 find_beginning(void)
2443 register char *s, *s2;
2445 /* skip forward in input to the real script? */
2448 while (PL_doextract) {
2449 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
2450 croak("No Perl script found in input\n");
2451 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
2452 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
2453 PL_doextract = FALSE;
2454 while (*s && !(isSPACE (*s) || *s == '#')) s++;
2456 while (*s == ' ' || *s == '\t') s++;
2458 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
2459 if (strnEQ(s2-4,"perl",4))
2461 while (s = moreswitches(s)) ;
2463 if (PL_cddir && PerlDir_chdir(PL_cddir) < 0)
2464 croak("Can't chdir to %s",PL_cddir);
2473 PL_uid = (int)PerlProc_getuid();
2474 PL_euid = (int)PerlProc_geteuid();
2475 PL_gid = (int)PerlProc_getgid();
2476 PL_egid = (int)PerlProc_getegid();
2478 PL_uid |= PL_gid << 16;
2479 PL_euid |= PL_egid << 16;
2481 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
2485 forbid_setid(char *s)
2487 if (PL_euid != PL_uid)
2488 croak("No %s allowed while running setuid", s);
2489 if (PL_egid != PL_gid)
2490 croak("No %s allowed while running setgid", s);
2497 PL_curstash = PL_debstash;
2498 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
2499 AvREAL_off(PL_dbargs);
2500 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
2501 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
2502 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
2503 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
2504 sv_setiv(PL_DBsingle, 0);
2505 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
2506 sv_setiv(PL_DBtrace, 0);
2507 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
2508 sv_setiv(PL_DBsignal, 0);
2509 PL_curstash = PL_defstash;
2512 #ifndef STRESS_REALLOC
2513 #define REASONABLE(size) (size)
2515 #define REASONABLE(size) (1) /* unreasonable */
2519 init_stacks(ARGSproto)
2521 /* start with 128-item stack and 8K cxstack */
2522 PL_curstackinfo = new_stackinfo(REASONABLE(128),
2523 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
2524 PL_curstackinfo->si_type = PERLSI_MAIN;
2525 PL_curstack = PL_curstackinfo->si_stack;
2526 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
2528 PL_stack_base = AvARRAY(PL_curstack);
2529 PL_stack_sp = PL_stack_base;
2530 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
2532 New(50,PL_tmps_stack,REASONABLE(128),SV*);
2535 PL_tmps_max = REASONABLE(128);
2537 New(54,PL_markstack,REASONABLE(32),I32);
2538 PL_markstack_ptr = PL_markstack;
2539 PL_markstack_max = PL_markstack + REASONABLE(32);
2543 New(54,PL_scopestack,REASONABLE(32),I32);
2544 PL_scopestack_ix = 0;
2545 PL_scopestack_max = REASONABLE(32);
2547 New(54,PL_savestack,REASONABLE(128),ANY);
2548 PL_savestack_ix = 0;
2549 PL_savestack_max = REASONABLE(128);
2551 New(54,PL_retstack,REASONABLE(16),OP*);
2553 PL_retstack_max = REASONABLE(16);
2562 while (PL_curstackinfo->si_next)
2563 PL_curstackinfo = PL_curstackinfo->si_next;
2564 while (PL_curstackinfo) {
2565 PERL_SI *p = PL_curstackinfo->si_prev;
2566 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
2567 Safefree(PL_curstackinfo->si_cxstack);
2568 Safefree(PL_curstackinfo);
2569 PL_curstackinfo = p;
2571 Safefree(PL_tmps_stack);
2572 Safefree(PL_markstack);
2573 Safefree(PL_scopestack);
2574 Safefree(PL_savestack);
2575 Safefree(PL_retstack);
2577 Safefree(PL_debname);
2578 Safefree(PL_debdelim);
2583 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
2594 lex_start(PL_linestr);
2596 PL_subname = newSVpv("main",4);
2600 init_predump_symbols(void)
2606 sv_setpvn(perl_get_sv("\"", TRUE), " ", 1);
2607 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
2608 GvMULTI_on(PL_stdingv);
2609 IoIFP(GvIOp(PL_stdingv)) = PerlIO_stdin();
2610 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
2612 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(PL_stdingv));
2614 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
2616 IoOFP(GvIOp(tmpgv)) = IoIFP(GvIOp(tmpgv)) = PerlIO_stdout();
2618 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
2620 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(PL_defoutgv));
2622 othergv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
2623 GvMULTI_on(othergv);
2624 IoOFP(GvIOp(othergv)) = IoIFP(GvIOp(othergv)) = PerlIO_stderr();
2625 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
2627 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(othergv));
2629 PL_statname = NEWSV(66,0); /* last filename we did stat on */
2632 PL_osname = savepv(OSNAME);
2636 init_postdump_symbols(register int argc, register char **argv, register char **env)
2643 argc--,argv++; /* skip name of script */
2644 if (PL_doswitches) {
2645 for (; argc > 0 && **argv == '-'; argc--,argv++) {
2648 if (argv[0][1] == '-') {
2652 if (s = strchr(argv[0], '=')) {
2654 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
2657 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
2660 PL_toptarget = NEWSV(0,0);
2661 sv_upgrade(PL_toptarget, SVt_PVFM);
2662 sv_setpvn(PL_toptarget, "", 0);
2663 PL_bodytarget = NEWSV(0,0);
2664 sv_upgrade(PL_bodytarget, SVt_PVFM);
2665 sv_setpvn(PL_bodytarget, "", 0);
2666 PL_formtarget = PL_bodytarget;
2669 if (tmpgv = gv_fetchpv("0",TRUE, SVt_PV)) {
2670 sv_setpv(GvSV(tmpgv),PL_origfilename);
2671 magicname("0", "0", 1);
2673 if (tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))
2674 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
2675 if (PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV)) {
2676 GvMULTI_on(PL_argvgv);
2677 (void)gv_AVadd(PL_argvgv);
2678 av_clear(GvAVn(PL_argvgv));
2679 for (; argc > 0; argc--,argv++) {
2680 av_push(GvAVn(PL_argvgv),newSVpv(argv[0],0));
2683 if (PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV)) {
2685 GvMULTI_on(PL_envgv);
2686 hv = GvHVn(PL_envgv);
2687 hv_magic(hv, PL_envgv, 'E');
2688 #ifndef VMS /* VMS doesn't have environ array */
2689 /* Note that if the supplied env parameter is actually a copy
2690 of the global environ then it may now point to free'd memory
2691 if the environment has been modified since. To avoid this
2692 problem we treat env==NULL as meaning 'use the default'
2697 environ[0] = Nullch;
2698 for (; *env; env++) {
2699 if (!(s = strchr(*env,'=')))
2705 sv = newSVpv(s--,0);
2706 (void)hv_store(hv, *env, s - *env, sv, 0);
2708 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
2709 /* Sins of the RTL. See note in my_setenv(). */
2710 (void)PerlEnv_putenv(savepv(*env));
2714 #ifdef DYNAMIC_ENV_FETCH
2715 HvNAME(hv) = savepv(ENV_HV_NAME);
2719 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
2720 sv_setiv(GvSV(tmpgv), (IV)getpid());
2729 s = PerlEnv_getenv("PERL5LIB");
2733 incpush(PerlEnv_getenv("PERLLIB"), FALSE);
2735 /* Treat PERL5?LIB as a possible search list logical name -- the
2736 * "natural" VMS idiom for a Unix path string. We allow each
2737 * element to be a set of |-separated directories for compatibility.
2741 if (my_trnlnm("PERL5LIB",buf,0))
2742 do { incpush(buf,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
2744 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE);
2748 /* Use the ~-expanded versions of APPLLIB (undocumented),
2749 ARCHLIB PRIVLIB SITEARCH and SITELIB
2752 incpush(APPLLIB_EXP, TRUE);
2756 incpush(ARCHLIB_EXP, FALSE);
2759 #define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
2762 incpush(PRIVLIB_EXP, TRUE);
2764 incpush(PRIVLIB_EXP, FALSE);
2768 incpush(SITEARCH_EXP, FALSE);
2772 incpush(SITELIB_EXP, TRUE);
2774 incpush(SITELIB_EXP, FALSE);
2778 incpush(".", FALSE);
2782 # define PERLLIB_SEP ';'
2785 # define PERLLIB_SEP '|'
2787 # define PERLLIB_SEP ':'
2790 #ifndef PERLLIB_MANGLE
2791 # define PERLLIB_MANGLE(s,n) (s)
2795 incpush(char *p, int addsubdirs)
2797 SV *subdir = Nullsv;
2803 subdir = sv_newmortal();
2804 if (!PL_archpat_auto) {
2805 STRLEN len = (sizeof(ARCHNAME) + strlen(PL_patchlevel)
2806 + sizeof("//auto"));
2807 New(55, PL_archpat_auto, len, char);
2808 sprintf(PL_archpat_auto, "/%s/%s/auto", ARCHNAME, PL_patchlevel);
2810 for (len = sizeof(ARCHNAME) + 2;
2811 PL_archpat_auto[len] != '\0' && PL_archpat_auto[len] != '/'; len++)
2812 if (PL_archpat_auto[len] == '.') PL_archpat_auto[len] = '_';
2817 /* Break at all separators */
2819 SV *libdir = NEWSV(55,0);
2822 /* skip any consecutive separators */
2823 while ( *p == PERLLIB_SEP ) {
2824 /* Uncomment the next line for PATH semantics */
2825 /* av_push(GvAVn(PL_incgv), newSVpv(".", 1)); */
2829 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
2830 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
2835 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
2836 p = Nullch; /* break out */
2840 * BEFORE pushing libdir onto @INC we may first push version- and
2841 * archname-specific sub-directories.
2844 struct stat tmpstatbuf;
2849 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
2851 while (unix[len-1] == '/') len--; /* Cosmetic */
2852 sv_usepvn(libdir,unix,len);
2855 PerlIO_printf(PerlIO_stderr(),
2856 "Failed to unixify @INC element \"%s\"\n",
2859 /* .../archname/version if -d .../archname/version/auto */
2860 sv_setsv(subdir, libdir);
2861 sv_catpv(subdir, PL_archpat_auto);
2862 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2863 S_ISDIR(tmpstatbuf.st_mode))
2864 av_push(GvAVn(PL_incgv),
2865 newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2867 /* .../archname if -d .../archname/auto */
2868 sv_insert(subdir, SvCUR(libdir) + sizeof(ARCHNAME),
2869 strlen(PL_patchlevel) + 1, "", 0);
2870 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2871 S_ISDIR(tmpstatbuf.st_mode))
2872 av_push(GvAVn(PL_incgv),
2873 newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2876 /* finally push this lib directory on the end of @INC */
2877 av_push(GvAVn(PL_incgv), libdir);
2882 STATIC struct perl_thread *
2885 struct perl_thread *thr;
2888 Newz(53, thr, 1, struct perl_thread);
2889 PL_curcop = &PL_compiling;
2890 thr->cvcache = newHV();
2891 thr->threadsv = newAV();
2892 /* thr->threadsvp is set when find_threadsv is called */
2893 thr->specific = newAV();
2894 thr->errhv = newHV();
2895 thr->flags = THRf_R_JOINABLE;
2896 MUTEX_INIT(&thr->mutex);
2897 /* Handcraft thrsv similarly to mess_sv */
2898 New(53, PL_thrsv, 1, SV);
2899 Newz(53, xpv, 1, XPV);
2900 SvFLAGS(PL_thrsv) = SVt_PV;
2901 SvANY(PL_thrsv) = (void*)xpv;
2902 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
2903 SvPVX(PL_thrsv) = (char*)thr;
2904 SvCUR_set(PL_thrsv, sizeof(thr));
2905 SvLEN_set(PL_thrsv, sizeof(thr));
2906 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
2907 thr->oursv = PL_thrsv;
2908 PL_chopset = " \n-";
2911 MUTEX_LOCK(&PL_threads_mutex);
2916 MUTEX_UNLOCK(&PL_threads_mutex);
2918 #ifdef HAVE_THREAD_INTERN
2919 init_thread_intern(thr);
2922 #ifdef SET_THREAD_SELF
2923 SET_THREAD_SELF(thr);
2925 thr->self = pthread_self();
2926 #endif /* SET_THREAD_SELF */
2930 * These must come after the SET_THR because sv_setpvn does
2931 * SvTAINT and the taint fields require dTHR.
2933 PL_toptarget = NEWSV(0,0);
2934 sv_upgrade(PL_toptarget, SVt_PVFM);
2935 sv_setpvn(PL_toptarget, "", 0);
2936 PL_bodytarget = NEWSV(0,0);
2937 sv_upgrade(PL_bodytarget, SVt_PVFM);
2938 sv_setpvn(PL_bodytarget, "", 0);
2939 PL_formtarget = PL_bodytarget;
2940 thr->errsv = newSVpv("", 0);
2941 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
2944 PL_regcompp = FUNC_NAME_TO_PTR(pregcomp);
2945 PL_regexecp = FUNC_NAME_TO_PTR(regexec_flags);
2947 PL_reginterp_cnt = 0;
2951 #endif /* USE_THREADS */
2954 call_list(I32 oldscope, AV *paramList)
2957 line_t oldline = PL_curcop->cop_line;
2962 while (AvFILL(paramList) >= 0) {
2963 CV *cv = (CV*)av_shift(paramList);
2971 PUSHMARK(PL_stack_sp);
2972 perl_call_sv((SV*)cv, G_EVAL|G_DISCARD);
2973 (void)SvPV(atsv, len);
2976 PL_curcop = &PL_compiling;
2977 PL_curcop->cop_line = oldline;
2978 if (paramList == PL_beginav)
2979 sv_catpv(atsv, "BEGIN failed--compilation aborted");
2981 sv_catpv(atsv, "END failed--cleanup aborted");
2982 while (PL_scopestack_ix > oldscope)
2984 croak("%s", SvPVX(atsv));
2992 /* my_exit() was called */
2993 while (PL_scopestack_ix > oldscope)
2996 PL_curstash = PL_defstash;
2998 call_list(oldscope, PL_endav);
3000 PL_curcop = &PL_compiling;
3001 PL_curcop->cop_line = oldline;
3002 if (PL_statusvalue) {
3003 if (paramList == PL_beginav)
3004 croak("BEGIN failed--compilation aborted");
3006 croak("END failed--cleanup aborted");
3011 if (!PL_restartop) {
3012 PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
3017 PL_curcop = &PL_compiling;
3018 PL_curcop->cop_line = oldline;
3030 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3031 thr, (unsigned long) status));
3040 STATUS_NATIVE_SET(status);
3047 my_failure_exit(void)
3050 if (vaxc$errno & 1) {
3051 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3052 STATUS_NATIVE_SET(44);
3055 if (!vaxc$errno && errno) /* unlikely */
3056 STATUS_NATIVE_SET(44);
3058 STATUS_NATIVE_SET(vaxc$errno);
3063 STATUS_POSIX_SET(errno);
3065 exitstatus = STATUS_POSIX >> 8;
3066 if (exitstatus & 255)
3067 STATUS_POSIX_SET(exitstatus);
3069 STATUS_POSIX_SET(255);
3079 register PERL_CONTEXT *cx;
3084 SvREFCNT_dec(PL_e_script);
3085 PL_e_script = Nullsv;
3088 POPSTACK_TO(PL_mainstack);
3089 if (cxstack_ix >= 0) {
3092 POPBLOCK(cx,PL_curpm);
3101 #endif /* PERL_OBJECT */
3107 read_e_script(CPerlObj *pPerl, int idx, SV *buf_sv, int maxlen)
3109 read_e_script(int idx, SV *buf_sv, int maxlen)
3113 p = SvPVX(PL_e_script);
3114 nl = strchr(p, '\n');
3115 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3117 filter_del(read_e_script);
3120 sv_catpvn(buf_sv, p, nl-p);
3121 sv_chop(PL_e_script, nl);