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
16 #include "patchlevel.h"
18 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
23 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
24 char *getenv _((char *)); /* Usually in <stdlib.h> */
40 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
47 static I32 read_e_script _((CPerlObj* pPerl, int idx, SV *buf_sv, int maxlen));
49 static void find_beginning _((void));
50 static void forbid_setid _((char *));
51 static void incpush _((char *, int));
52 static void init_interp _((void));
53 static void init_ids _((void));
54 static void init_debugger _((void));
55 static void init_lexer _((void));
56 static void init_main_stash _((void));
58 static struct perl_thread * init_main_thread _((void));
59 #endif /* USE_THREADS */
60 static void init_perllib _((void));
61 static void init_postdump_symbols _((int, char **, char **));
62 static void init_predump_symbols _((void));
63 static void my_exit_jump _((void)) __attribute__((noreturn));
64 static void nuke_stacks _((void));
65 static void open_script _((char *, bool, SV *, int *fd));
66 static void usage _((char *));
67 static void validate_suid _((char *, char*, int));
68 static I32 read_e_script _((int idx, SV *buf_sv, int maxlen));
72 CPerlObj* perl_alloc(IPerlMem* ipM, IPerlEnv* ipE, IPerlStdIO* ipStd,
73 IPerlLIO* ipLIO, IPerlDir* ipD, IPerlSock* ipS, IPerlProc* ipP)
75 CPerlObj* pPerl = new(ipM) CPerlObj(ipM, ipE, ipStd, ipLIO, ipD, ipS, ipP);
85 PerlInterpreter *sv_interp;
88 New(53, sv_interp, 1, PerlInterpreter);
91 #endif /* PERL_OBJECT */
95 CPerlObj::perl_construct(void)
97 perl_construct(register PerlInterpreter *sv_interp)
103 struct perl_thread *thr;
104 #endif /* FAKE_THREADS */
105 #endif /* USE_THREADS */
108 if (!(PL_curinterp = sv_interp))
114 Zero(sv_interp, 1, PerlInterpreter);
117 /* Init the real globals (and main thread)? */
122 #ifdef ALLOC_THREAD_KEY
125 if (pthread_key_create(&PL_thr_key, 0))
126 croak("panic: pthread_key_create");
128 MUTEX_INIT(&PL_sv_mutex);
130 * Safe to use basic SV functions from now on (though
131 * not things like mortals or tainting yet).
133 MUTEX_INIT(&PL_eval_mutex);
134 COND_INIT(&PL_eval_cond);
135 MUTEX_INIT(&PL_threads_mutex);
136 COND_INIT(&PL_nthreads_cond);
137 #ifdef EMULATE_ATOMIC_REFCOUNTS
138 MUTEX_INIT(&PL_svref_mutex);
139 #endif /* EMULATE_ATOMIC_REFCOUNTS */
141 thr = init_main_thread();
142 #endif /* USE_THREADS */
144 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
146 PL_linestr = NEWSV(65,79);
147 sv_upgrade(PL_linestr,SVt_PVIV);
149 if (!SvREADONLY(&PL_sv_undef)) {
150 /* set read-only and try to insure than we wont see REFCNT==0
153 SvREADONLY_on(&PL_sv_undef);
154 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
156 sv_setpv(&PL_sv_no,PL_No);
158 SvREADONLY_on(&PL_sv_no);
159 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
161 sv_setpv(&PL_sv_yes,PL_Yes);
163 SvREADONLY_on(&PL_sv_yes);
164 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
169 /* PL_sighandlerp = sighandler; */
171 PL_sighandlerp = sighandler;
173 PL_pidstatus = newHV();
177 * There is no way we can refer to them from Perl so close them to save
178 * space. The other alternative would be to provide STDAUX and STDPRN
181 (void)fclose(stdaux);
182 (void)fclose(stdprn);
186 PL_nrs = newSVpv("\n", 1);
187 PL_rs = SvREFCNT_inc(PL_nrs);
192 PL_perl_destruct_level = 1;
194 if (PL_perl_destruct_level > 0)
199 PL_lex_state = LEX_NOTPARSING;
201 PL_start_env.je_prev = NULL;
202 PL_start_env.je_ret = -1;
203 PL_start_env.je_mustcatch = TRUE;
204 PL_top_env = &PL_start_env;
207 SET_NUMERIC_STANDARD();
208 #if defined(SUBVERSION) && SUBVERSION > 0
209 sprintf(PL_patchlevel, "%7.5f", (double) 5
210 + ((double) PATCHLEVEL / (double) 1000)
211 + ((double) SUBVERSION / (double) 100000));
213 sprintf(PL_patchlevel, "%5.3f", (double) 5 +
214 ((double) PATCHLEVEL / (double) 1000));
217 #if defined(LOCAL_PATCH_COUNT)
218 PL_localpatches = local_patches; /* For possible -v */
221 PerlIO_init(); /* Hook to IO system */
223 PL_fdpid = newAV(); /* for remembering popen pids by fd */
224 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
227 New(51,PL_debname,128,char);
228 New(52,PL_debdelim,128,char);
236 CPerlObj::perl_destruct(void)
238 perl_destruct(register PerlInterpreter *sv_interp)
242 int destruct_level; /* 0=none, 1=full, 2=full with checks */
247 #endif /* USE_THREADS */
250 if (!(PL_curinterp = sv_interp))
256 /* Pass 1 on any remaining threads: detach joinables, join zombies */
258 MUTEX_LOCK(&PL_threads_mutex);
259 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
260 "perl_destruct: waiting for %d threads...\n",
262 for (t = thr->next; t != thr; t = t->next) {
263 MUTEX_LOCK(&t->mutex);
264 switch (ThrSTATE(t)) {
267 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
268 "perl_destruct: joining zombie %p\n", t));
269 ThrSETSTATE(t, THRf_DEAD);
270 MUTEX_UNLOCK(&t->mutex);
273 * The SvREFCNT_dec below may take a long time (e.g. av
274 * may contain an object scalar whose destructor gets
275 * called) so we have to unlock threads_mutex and start
278 MUTEX_UNLOCK(&PL_threads_mutex);
280 SvREFCNT_dec((SV*)av);
281 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
282 "perl_destruct: joined zombie %p OK\n", t));
284 case THRf_R_JOINABLE:
285 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
286 "perl_destruct: detaching thread %p\n", t));
287 ThrSETSTATE(t, THRf_R_DETACHED);
289 * We unlock threads_mutex and t->mutex in the opposite order
290 * from which we locked them just so that DETACH won't
291 * deadlock if it panics. It's only a breach of good style
292 * not a bug since they are unlocks not locks.
294 MUTEX_UNLOCK(&PL_threads_mutex);
296 MUTEX_UNLOCK(&t->mutex);
299 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
300 "perl_destruct: ignoring %p (state %u)\n",
302 MUTEX_UNLOCK(&t->mutex);
303 /* fall through and out */
306 /* We leave the above "Pass 1" loop with threads_mutex still locked */
308 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
309 while (PL_nthreads > 1)
311 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
312 "perl_destruct: final wait for %d threads\n",
314 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
316 /* At this point, we're the last thread */
317 MUTEX_UNLOCK(&PL_threads_mutex);
318 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "perl_destruct: armageddon has arrived\n"));
319 MUTEX_DESTROY(&PL_threads_mutex);
320 COND_DESTROY(&PL_nthreads_cond);
321 #endif /* !defined(FAKE_THREADS) */
322 #endif /* USE_THREADS */
324 destruct_level = PL_perl_destruct_level;
328 if (s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL")) {
330 if (destruct_level < i)
343 /* We must account for everything. */
345 /* Destroy the main CV and syntax tree */
347 PL_curpad = AvARRAY(PL_comppad);
348 op_free(PL_main_root);
349 PL_main_root = Nullop;
351 PL_curcop = &PL_compiling;
352 PL_main_start = Nullop;
353 SvREFCNT_dec(PL_main_cv);
356 if (PL_sv_objcount) {
358 * Try to destruct global references. We do this first so that the
359 * destructors and destructees still exist. Some sv's might remain.
360 * Non-referenced objects are on their own.
367 /* unhook hooks which will soon be, or use, destroyed data */
368 SvREFCNT_dec(PL_warnhook);
369 PL_warnhook = Nullsv;
370 SvREFCNT_dec(PL_diehook);
372 SvREFCNT_dec(PL_parsehook);
373 PL_parsehook = Nullsv;
375 /* call exit list functions */
376 while (PL_exitlistlen-- > 0)
377 PL_exitlist[PL_exitlistlen].fn(PERL_OBJECT_THIS_ PL_exitlist[PL_exitlistlen].ptr);
379 Safefree(PL_exitlist);
381 if (destruct_level == 0){
383 DEBUG_P(debprofdump());
385 /* The exit() function will do everything that needs doing. */
389 /* loosen bonds of global variables */
392 (void)PerlIO_close(PL_rsfp);
396 /* Filters for program text */
397 SvREFCNT_dec(PL_rsfp_filters);
398 PL_rsfp_filters = Nullav;
401 PL_preprocess = FALSE;
407 PL_doswitches = FALSE;
408 PL_dowarn = G_WARN_OFF;
409 PL_doextract = FALSE;
410 PL_sawampersand = FALSE; /* must save all match strings */
411 PL_sawstudy = FALSE; /* do fbm_instr on all strings */
415 Safefree(PL_inplace);
419 SvREFCNT_dec(PL_e_script);
420 PL_e_script = Nullsv;
423 /* magical thingies */
425 Safefree(PL_ofs); /* $, */
428 Safefree(PL_ors); /* $\ */
431 SvREFCNT_dec(PL_rs); /* $/ */
434 SvREFCNT_dec(PL_nrs); /* $/ helper */
437 PL_multiline = 0; /* $* */
439 SvREFCNT_dec(PL_statname);
440 PL_statname = Nullsv;
443 /* defgv, aka *_ should be taken care of elsewhere */
445 /* clean up after study() */
446 SvREFCNT_dec(PL_lastscream);
447 PL_lastscream = Nullsv;
448 Safefree(PL_screamfirst);
450 Safefree(PL_screamnext);
453 /* startup and shutdown function lists */
454 SvREFCNT_dec(PL_beginav);
455 SvREFCNT_dec(PL_endav);
456 SvREFCNT_dec(PL_initav);
461 /* shortcuts just get cleared */
468 PL_argvoutgv = Nullgv;
470 PL_last_in_gv = Nullgv;
473 /* reset so print() ends up where we expect */
476 /* Prepare to destruct main symbol table. */
483 if (destruct_level >= 2) {
484 if (PL_scopestack_ix != 0)
485 warn("Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
486 (long)PL_scopestack_ix);
487 if (PL_savestack_ix != 0)
488 warn("Unbalanced saves: %ld more saves than restores\n",
489 (long)PL_savestack_ix);
490 if (PL_tmps_floor != -1)
491 warn("Unbalanced tmps: %ld more allocs than frees\n",
492 (long)PL_tmps_floor + 1);
493 if (cxstack_ix != -1)
494 warn("Unbalanced context: %ld more PUSHes than POPs\n",
495 (long)cxstack_ix + 1);
498 /* Now absolutely destruct everything, somehow or other, loops or no. */
500 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
501 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
502 last_sv_count = PL_sv_count;
505 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
506 SvFLAGS(PL_strtab) |= SVt_PVHV;
508 /* Destruct the global string table. */
510 /* Yell and reset the HeVAL() slots that are still holding refcounts,
511 * so that sv_free() won't fail on them.
519 max = HvMAX(PL_strtab);
520 array = HvARRAY(PL_strtab);
524 warn("Unbalanced string table refcount: (%d) for \"%s\"",
525 HeVAL(hent) - Nullsv, HeKEY(hent));
526 HeVAL(hent) = Nullsv;
536 SvREFCNT_dec(PL_strtab);
538 if (PL_sv_count != 0)
539 warn("Scalars leaked: %ld\n", (long)PL_sv_count);
543 /* No SVs have survived, need to clean out */
545 PL_pidstatus = Nullhv;
546 Safefree(PL_origfilename);
547 Safefree(PL_archpat_auto);
548 Safefree(PL_reg_start_tmp);
549 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
550 Safefree(PL_op_mask);
552 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
554 DEBUG_P(debprofdump());
556 MUTEX_DESTROY(&PL_sv_mutex);
557 MUTEX_DESTROY(&PL_eval_mutex);
558 COND_DESTROY(&PL_eval_cond);
560 /* As the penultimate thing, free the non-arena SV for thrsv */
561 Safefree(SvPVX(PL_thrsv));
562 Safefree(SvANY(PL_thrsv));
565 #endif /* USE_THREADS */
567 /* As the absolutely last thing, free the non-arena SV for mess() */
570 /* it could have accumulated taint magic */
571 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
574 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
575 moremagic = mg->mg_moremagic;
576 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
577 Safefree(mg->mg_ptr);
581 /* we know that type >= SVt_PV */
582 SvOOK_off(PL_mess_sv);
583 Safefree(SvPVX(PL_mess_sv));
584 Safefree(SvANY(PL_mess_sv));
585 Safefree(PL_mess_sv);
592 CPerlObj::perl_free(void)
594 perl_free(PerlInterpreter *sv_interp)
600 if (!(PL_curinterp = sv_interp))
608 CPerlObj::perl_atexit(void (*fn) (CPerlObj*,void *), void *ptr)
610 perl_atexit(void (*fn) (void *), void *ptr)
613 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
614 PL_exitlist[PL_exitlistlen].fn = fn;
615 PL_exitlist[PL_exitlistlen].ptr = ptr;
621 CPerlObj::perl_parse(void (*xsinit) (CPerlObj*), int argc, char **argv, char **env)
623 perl_parse(PerlInterpreter *sv_interp, void (*xsinit) (void), int argc, char **argv, char **env)
629 char *scriptname = NULL;
630 VOL bool dosearch = FALSE;
638 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
641 croak("suidperl is no longer needed since the kernel can now execute\n\
642 setuid perl scripts securely.\n");
647 if (!(PL_curinterp = sv_interp))
651 #if defined(NeXT) && defined(__DYNAMIC__)
652 _dyld_lookup_and_bind
653 ("__environ", (unsigned long *) &environ_pointer, NULL);
658 #ifndef VMS /* VMS doesn't have environ array */
659 PL_origenviron = environ;
664 /* Come here if running an undumped a.out. */
666 PL_origfilename = savepv(argv[0]);
667 PL_do_undump = FALSE;
668 cxstack_ix = -1; /* start label stack again */
670 init_postdump_symbols(argc,argv,env);
675 PL_curpad = AvARRAY(PL_comppad);
676 op_free(PL_main_root);
677 PL_main_root = Nullop;
679 PL_main_start = Nullop;
680 SvREFCNT_dec(PL_main_cv);
684 oldscope = PL_scopestack_ix;
685 PL_dowarn = G_WARN_OFF;
693 /* my_exit() was called */
694 while (PL_scopestack_ix > oldscope)
697 PL_curstash = PL_defstash;
699 call_list(oldscope, PL_endav);
701 return STATUS_NATIVE_EXPORT;
704 PerlIO_printf(PerlIO_stderr(), "panic: top_env\n");
708 sv_setpvn(PL_linestr,"",0);
709 sv = newSVpv("",0); /* first used for -I flags */
713 for (argc--,argv++; argc > 0; argc--,argv++) {
714 if (argv[0][0] != '-' || !argv[0][1])
718 validarg = " PHOOEY ";
746 if (s = moreswitches(s))
756 if (PL_euid != PL_uid || PL_egid != PL_gid)
757 croak("No -e allowed in setuid scripts");
759 PL_e_script = newSVpv("",0);
760 filter_add(read_e_script, NULL);
763 sv_catpv(PL_e_script, s);
765 sv_catpv(PL_e_script, argv[1]);
769 croak("No code specified for -e");
770 sv_catpv(PL_e_script, "\n");
773 case 'I': /* -I handled both here and in moreswitches() */
775 if (!*++s && (s=argv[1]) != Nullch) {
778 while (s && isSPACE(*s))
782 for (e = s; *e && !isSPACE(*e); e++) ;
789 } /* XXX else croak? */
793 PL_preprocess = TRUE;
803 PL_preambleav = newAV();
804 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
806 PL_Sv = newSVpv("print myconfig();",0);
808 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
810 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
812 #if defined(DEBUGGING) || defined(NO_EMBED) || defined(MULTIPLICITY)
813 sv_catpv(PL_Sv,"\" Compile-time options:");
815 sv_catpv(PL_Sv," DEBUGGING");
818 sv_catpv(PL_Sv," NO_EMBED");
821 sv_catpv(PL_Sv," MULTIPLICITY");
823 sv_catpv(PL_Sv,"\\n\",");
825 #if defined(LOCAL_PATCH_COUNT)
826 if (LOCAL_PATCH_COUNT > 0) {
828 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
829 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
830 if (PL_localpatches[i])
831 sv_catpvf(PL_Sv,"\" \\t%s\\n\",",PL_localpatches[i]);
835 sv_catpvf(PL_Sv,"\" Built under %s\\n\"",OSNAME);
838 sv_catpvf(PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
840 sv_catpvf(PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
845 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
846 print \" \\%ENV:\\n @env\\n\" if @env; \
847 print \" \\@INC:\\n @INC\\n\";");
850 PL_Sv = newSVpv("config_vars(qw(",0);
851 sv_catpv(PL_Sv, ++s);
852 sv_catpv(PL_Sv, "))");
855 av_push(PL_preambleav, PL_Sv);
856 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
862 PL_cddir = savepv(s);
867 if (!*++s || isSPACE(*s)) {
871 /* catch use of gnu style long options */
872 if (strEQ(s, "version")) {
876 if (strEQ(s, "help")) {
883 croak("Unrecognized switch: -%s (-h will show valid options)",s);
888 if (!PL_tainting && (s = PerlEnv_getenv("PERL5OPT"))) {
899 if (!strchr("DIMUdmw", *s))
900 croak("Illegal switch in PERL5OPT: -%c", *s);
906 scriptname = argv[0];
909 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
911 else if (scriptname == Nullch) {
913 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
921 open_script(scriptname,dosearch,sv,&fdscript);
923 validate_suid(validarg, scriptname,fdscript);
928 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
929 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
930 CvUNIQUE_on(PL_compcv);
932 PL_comppad = newAV();
933 av_push(PL_comppad, Nullsv);
934 PL_curpad = AvARRAY(PL_comppad);
935 PL_comppad_name = newAV();
936 PL_comppad_name_fill = 0;
937 PL_min_intro_pending = 0;
940 av_store(PL_comppad_name, 0, newSVpv("@_", 2));
941 PL_curpad[0] = (SV*)newAV();
942 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
943 CvOWNER(PL_compcv) = 0;
944 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
945 MUTEX_INIT(CvMUTEXP(PL_compcv));
946 #endif /* USE_THREADS */
948 comppadlist = newAV();
949 AvREAL_off(comppadlist);
950 av_store(comppadlist, 0, (SV*)PL_comppad_name);
951 av_store(comppadlist, 1, (SV*)PL_comppad);
952 CvPADLIST(PL_compcv) = comppadlist;
954 boot_core_UNIVERSAL();
957 (*xsinit)(PERL_OBJECT_THIS); /* in case linked C routines want magical variables */
958 #if defined(VMS) || defined(WIN32) || defined(DJGPP)
962 init_predump_symbols();
963 /* init_postdump_symbols not currently designed to be called */
964 /* more than once (ENV isn't cleared first, for example) */
965 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
967 init_postdump_symbols(argc,argv,env);
971 /* now parse the script */
973 SETERRNO(0,SS$_NORMAL);
975 if (yyparse() || PL_error_count) {
977 croak("%s had compilation errors.\n", PL_origfilename);
979 croak("Execution of %s aborted due to compilation errors.\n",
983 PL_curcop->cop_line = 0;
984 PL_curstash = PL_defstash;
985 PL_preprocess = FALSE;
987 SvREFCNT_dec(PL_e_script);
988 PL_e_script = Nullsv;
991 /* now that script is parsed, we can modify record separator */
993 PL_rs = SvREFCNT_inc(PL_nrs);
994 sv_setsv(perl_get_sv("/", TRUE), PL_rs);
998 if (ckWARN(WARN_ONCE))
999 gv_check(PL_defstash);
1005 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1006 dump_mstats("after compilation:");
1017 CPerlObj::perl_run(void)
1019 perl_run(PerlInterpreter *sv_interp)
1028 if (!(PL_curinterp = sv_interp))
1032 oldscope = PL_scopestack_ix;
1037 cxstack_ix = -1; /* start context stack again */
1040 /* my_exit() was called */
1041 while (PL_scopestack_ix > oldscope)
1044 PL_curstash = PL_defstash;
1046 call_list(oldscope, PL_endav);
1048 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1049 dump_mstats("after execution: ");
1052 return STATUS_NATIVE_EXPORT;
1054 if (!PL_restartop) {
1055 PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
1060 POPSTACK_TO(PL_mainstack);
1064 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1065 PL_sawampersand ? "Enabling" : "Omitting"));
1067 if (!PL_restartop) {
1068 DEBUG_x(dump_all());
1069 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1070 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%lx\n",
1071 (unsigned long) thr));
1074 PerlIO_printf(PerlIO_stderr(), "%s syntax OK\n", PL_origfilename);
1077 if (PERLDB_SINGLE && PL_DBsingle)
1078 sv_setiv(PL_DBsingle, 1);
1080 call_list(oldscope, PL_initav);
1086 PL_op = PL_restartop;
1090 else if (PL_main_start) {
1091 CvDEPTH(PL_main_cv) = 1;
1092 PL_op = PL_main_start;
1102 perl_get_sv(char *name, I32 create)
1106 if (name[1] == '\0' && !isALPHA(name[0])) {
1107 PADOFFSET tmp = find_threadsv(name);
1108 if (tmp != NOT_IN_PAD) {
1110 return THREADSV(tmp);
1113 #endif /* USE_THREADS */
1114 gv = gv_fetchpv(name, create, SVt_PV);
1121 perl_get_av(char *name, I32 create)
1123 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1132 perl_get_hv(char *name, I32 create)
1134 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1143 perl_get_cv(char *name, I32 create)
1145 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1146 if (create && !GvCVu(gv))
1147 return newSUB(start_subparse(FALSE, 0),
1148 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1156 /* Be sure to refetch the stack pointer after calling these routines. */
1159 perl_call_argv(char *sub_name, I32 flags, register char **argv)
1161 /* See G_* flags in cop.h */
1162 /* null terminated arg list */
1169 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1174 return perl_call_pv(sub_name, flags);
1178 perl_call_pv(char *sub_name, I32 flags)
1179 /* name of the subroutine */
1180 /* See G_* flags in cop.h */
1182 return perl_call_sv((SV*)perl_get_cv(sub_name, TRUE), flags);
1186 perl_call_method(char *methname, I32 flags)
1187 /* name of the subroutine */
1188 /* See G_* flags in cop.h */
1194 XPUSHs(sv_2mortal(newSVpv(methname,0)));
1199 return perl_call_sv(*PL_stack_sp--, flags);
1202 /* May be called with any of a CV, a GV, or an SV containing the name. */
1204 perl_call_sv(SV *sv, I32 flags)
1206 /* See G_* flags in cop.h */
1209 LOGOP myop; /* fake syntax tree node */
1213 bool oldcatch = CATCH_GET;
1218 if (flags & G_DISCARD) {
1223 Zero(&myop, 1, LOGOP);
1224 myop.op_next = Nullop;
1225 if (!(flags & G_NOARGS))
1226 myop.op_flags |= OPf_STACKED;
1227 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1228 (flags & G_ARRAY) ? OPf_WANT_LIST :
1233 EXTEND(PL_stack_sp, 1);
1234 *++PL_stack_sp = sv;
1236 oldscope = PL_scopestack_ix;
1238 if (PERLDB_SUB && PL_curstash != PL_debstash
1239 /* Handle first BEGIN of -d. */
1240 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1241 /* Try harder, since this may have been a sighandler, thus
1242 * curstash may be meaningless. */
1243 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1244 && !(flags & G_NODEBUG))
1245 PL_op->op_private |= OPpENTERSUB_DB;
1247 if (flags & G_EVAL) {
1248 cLOGOP->op_other = PL_op;
1250 /* we're trying to emulate pp_entertry() here */
1252 register PERL_CONTEXT *cx;
1253 I32 gimme = GIMME_V;
1258 push_return(PL_op->op_next);
1259 PUSHBLOCK(cx, CXt_EVAL, PL_stack_sp);
1261 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1264 if (flags & G_KEEPERR)
1279 /* my_exit() was called */
1280 PL_curstash = PL_defstash;
1284 croak("Callback called exit");
1289 PL_op = PL_restartop;
1293 PL_stack_sp = PL_stack_base + oldmark;
1294 if (flags & G_ARRAY)
1298 *++PL_stack_sp = &PL_sv_undef;
1306 if (PL_op == (OP*)&myop)
1307 PL_op = pp_entersub(ARGS);
1310 retval = PL_stack_sp - (PL_stack_base + oldmark);
1311 if ((flags & G_EVAL) && !(flags & G_KEEPERR))
1315 if (flags & G_EVAL) {
1316 if (PL_scopestack_ix > oldscope) {
1320 register PERL_CONTEXT *cx;
1332 CATCH_SET(oldcatch);
1334 if (flags & G_DISCARD) {
1335 PL_stack_sp = PL_stack_base + oldmark;
1344 /* Eval a string. The G_EVAL flag is always assumed. */
1347 perl_eval_sv(SV *sv, I32 flags)
1349 /* See G_* flags in cop.h */
1352 UNOP myop; /* fake syntax tree node */
1353 I32 oldmark = SP - PL_stack_base;
1360 if (flags & G_DISCARD) {
1367 Zero(PL_op, 1, UNOP);
1368 EXTEND(PL_stack_sp, 1);
1369 *++PL_stack_sp = sv;
1370 oldscope = PL_scopestack_ix;
1372 if (!(flags & G_NOARGS))
1373 myop.op_flags = OPf_STACKED;
1374 myop.op_next = Nullop;
1375 myop.op_type = OP_ENTEREVAL;
1376 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1377 (flags & G_ARRAY) ? OPf_WANT_LIST :
1379 if (flags & G_KEEPERR)
1380 myop.op_flags |= OPf_SPECIAL;
1390 /* my_exit() was called */
1391 PL_curstash = PL_defstash;
1395 croak("Callback called exit");
1400 PL_op = PL_restartop;
1404 PL_stack_sp = PL_stack_base + oldmark;
1405 if (flags & G_ARRAY)
1409 *++PL_stack_sp = &PL_sv_undef;
1414 if (PL_op == (OP*)&myop)
1415 PL_op = pp_entereval(ARGS);
1418 retval = PL_stack_sp - (PL_stack_base + oldmark);
1419 if (!(flags & G_KEEPERR))
1424 if (flags & G_DISCARD) {
1425 PL_stack_sp = PL_stack_base + oldmark;
1435 perl_eval_pv(char *p, I32 croak_on_error)
1438 SV* sv = newSVpv(p, 0);
1441 perl_eval_sv(sv, G_SCALAR);
1448 if (croak_on_error && SvTRUE(ERRSV))
1449 croak(SvPVx(ERRSV, PL_na));
1454 /* Require a module. */
1457 perl_require_pv(char *pv)
1461 PUSHSTACKi(PERLSI_REQUIRE);
1463 sv = sv_newmortal();
1464 sv_setpv(sv, "require '");
1467 perl_eval_sv(sv, G_DISCARD);
1473 magicname(char *sym, char *name, I32 namlen)
1477 if (gv = gv_fetchpv(sym,TRUE, SVt_PV))
1478 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1482 usage(char *name) /* XXX move this out into a module ? */
1485 /* This message really ought to be max 23 lines.
1486 * Removed -h because the user already knows that opton. Others? */
1488 static char *usage_msg[] = {
1489 "-0[octal] specify record separator (\\0, if no argument)",
1490 "-a autosplit mode with -n or -p (splits $_ into @F)",
1491 "-c check syntax only (runs BEGIN and END blocks)",
1492 "-d[:debugger] run scripts under debugger",
1493 "-D[number/list] set debugging flags (argument is a bit mask or flags)",
1494 "-e 'command' one line of script. Several -e's allowed. Omit [programfile].",
1495 "-F/pattern/ split() pattern for autosplit (-a). The //'s are optional.",
1496 "-i[extension] edit <> files in place (make backup if extension supplied)",
1497 "-Idirectory specify @INC/#include directory (may be used more than once)",
1498 "-l[octal] enable line ending processing, specifies line terminator",
1499 "-[mM][-]module.. executes `use/no module...' before executing your script.",
1500 "-n assume 'while (<>) { ... }' loop around your script",
1501 "-p assume loop like -n but print line also like sed",
1502 "-P run script through C preprocessor before compilation",
1503 "-s enable some switch parsing for switches after script name",
1504 "-S look for the script using PATH environment variable",
1505 "-T turn on tainting checks",
1506 "-u dump core after parsing script",
1507 "-U allow unsafe operations",
1508 "-v print version number, patchlevel plus VERY IMPORTANT perl info",
1509 "-V[:variable] print perl configuration information",
1510 "-w TURN WARNINGS ON FOR COMPILATION OF YOUR SCRIPT. Recommended.",
1511 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
1515 char **p = usage_msg;
1517 printf("\nUsage: %s [switches] [--] [programfile] [arguments]", name);
1519 printf("\n %s", *p++);
1522 /* This routine handles any switches that can be given during run */
1525 moreswitches(char *s)
1534 rschar = scan_oct(s, 4, &numlen);
1535 SvREFCNT_dec(PL_nrs);
1536 if (rschar & ~((U8)~0))
1537 PL_nrs = &PL_sv_undef;
1538 else if (!rschar && numlen >= 2)
1539 PL_nrs = newSVpv("", 0);
1542 PL_nrs = newSVpv(&ch, 1);
1548 PL_splitstr = savepv(s + 1);
1562 if (*s == ':' || *s == '=') {
1563 my_setenv("PERL5DB", form("use Devel::%s;", ++s));
1567 PL_perldb = PERLDB_ALL;
1574 if (isALPHA(s[1])) {
1575 static char debopts[] = "psltocPmfrxuLHXDS";
1578 for (s++; *s && (d = strchr(debopts,*s)); s++)
1579 PL_debug |= 1 << (d - debopts);
1582 PL_debug = atoi(s+1);
1583 for (s++; isDIGIT(*s); s++) ;
1585 PL_debug |= 0x80000000;
1587 warn("Recompile perl with -DDEBUGGING to use -D switch\n");
1588 for (s++; isALNUM(*s); s++) ;
1593 usage(PL_origargv[0]);
1597 Safefree(PL_inplace);
1598 PL_inplace = savepv(s+1);
1600 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
1603 if (*s == '-') /* Additional switches on #! line. */
1607 case 'I': /* -I handled both here and in parse_perl() */
1610 while (*s && isSPACE(*s))
1614 for (e = s; *e && !isSPACE(*e); e++) ;
1615 p = savepvn(s, e-s);
1621 croak("No space allowed after -I");
1629 PL_ors = savepv("\n");
1631 *PL_ors = scan_oct(s, 3 + (*s == '0'), &numlen);
1636 if (RsPARA(PL_nrs)) {
1641 PL_ors = SvPV(PL_nrs, PL_orslen);
1642 PL_ors = savepvn(PL_ors, PL_orslen);
1646 forbid_setid("-M"); /* XXX ? */
1649 forbid_setid("-m"); /* XXX ? */
1654 /* -M-foo == 'no foo' */
1655 if (*s == '-') { use = "no "; ++s; }
1656 sv = newSVpv(use,0);
1658 /* We allow -M'Module qw(Foo Bar)' */
1659 while(isALNUM(*s) || *s==':') ++s;
1661 sv_catpv(sv, start);
1662 if (*(start-1) == 'm') {
1664 croak("Can't use '%c' after -mname", *s);
1665 sv_catpv( sv, " ()");
1668 sv_catpvn(sv, start, s-start);
1669 sv_catpv(sv, " split(/,/,q{");
1674 if (PL_preambleav == NULL)
1675 PL_preambleav = newAV();
1676 av_push(PL_preambleav, sv);
1679 croak("No space allowed after -%c", *(s-1));
1691 PL_doswitches = TRUE;
1696 croak("Too late for \"-T\" option");
1700 PL_do_undump = TRUE;
1708 #if defined(SUBVERSION) && SUBVERSION > 0
1709 printf("\nThis is perl, version 5.%03d_%02d built for %s",
1710 PATCHLEVEL, SUBVERSION, ARCHNAME);
1712 printf("\nThis is perl, version %s built for %s",
1713 PL_patchlevel, ARCHNAME);
1715 #if defined(LOCAL_PATCH_COUNT)
1716 if (LOCAL_PATCH_COUNT > 0)
1717 printf("\n(with %d registered patch%s, see perl -V for more detail)",
1718 LOCAL_PATCH_COUNT, (LOCAL_PATCH_COUNT!=1) ? "es" : "");
1721 printf("\n\nCopyright 1987-1998, Larry Wall\n");
1723 printf("\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
1726 printf("djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n");
1727 printf("djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1998\n");
1730 printf("\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
1731 "Version 5 port Copyright (c) 1994-1998, Andreas Kaiser, Ilya Zakharevich\n");
1734 printf("atariST series port, ++jrb bammi@cadence.com\n");
1737 printf("BeOS port Copyright Tom Spindler, 1997-1998\n");
1740 printf("MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1998\n");
1743 printf("MVS (OS390) port by Mortice Kern Systems, 1997-1998\n");
1745 #ifdef BINARY_BUILD_NOTICE
1746 BINARY_BUILD_NOTICE;
1749 Perl may be copied only under the terms of either the Artistic License or the\n\
1750 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
1751 Complete documentation for Perl, including FAQ lists, should be found on\n\
1752 this system using `man perl' or `perldoc perl'. If you have access to the\n\
1753 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
1756 if (! (PL_dowarn & G_WARN_ALL_MASK))
1757 PL_dowarn |= G_WARN_ON;
1761 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
1762 compiling.cop_warnings = WARN_ALL ;
1766 PL_dowarn = G_WARN_ALL_OFF;
1767 compiling.cop_warnings = WARN_NONE ;
1772 if (s[1] == '-') /* Additional switches on #! line. */
1783 #ifdef ALTERNATE_SHEBANG
1784 case 'S': /* OS/2 needs -S on "extproc" line. */
1792 croak("Can't emulate -%.1s on #! line",s);
1797 /* compliments of Tom Christiansen */
1799 /* unexec() can be found in the Gnu emacs distribution */
1800 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
1811 prog = newSVpv(BIN_EXP, 0);
1812 sv_catpv(prog, "/perl");
1813 file = newSVpv(PL_origfilename, 0);
1814 sv_catpv(file, ".perldump");
1816 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
1817 /* unexec prints msg to stderr in case of failure */
1818 PerlProc_exit(status);
1821 # include <lib$routines.h>
1822 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
1824 ABORT(); /* for use with undump */
1829 /* initialize curinterp */
1834 #ifdef PERL_OBJECT /* XXX kludge */
1837 PL_chopset = " \n-"; \
1838 PL_copline = NOLINE; \
1839 PL_curcop = &PL_compiling;\
1840 PL_curcopdb = NULL; \
1843 PL_laststatval = -1; \
1844 PL_laststype = OP_STAT; \
1845 PL_maxscream = -1; \
1846 PL_maxsysfd = MAXSYSFD; \
1847 PL_statname = Nullsv; \
1848 PL_tmps_floor = -1; \
1850 PL_op_mask = NULL; \
1852 PL_laststatval = -1; \
1853 PL_laststype = OP_STAT; \
1854 PL_mess_sv = Nullsv; \
1855 PL_splitstr = " "; \
1856 PL_generation = 100; \
1857 PL_exitlist = NULL; \
1858 PL_exitlistlen = 0; \
1860 PL_in_clean_objs = FALSE; \
1861 PL_in_clean_all = FALSE; \
1862 PL_profiledata = NULL; \
1864 PL_rsfp_filters = Nullav; \
1868 # ifdef MULTIPLICITY
1869 # define PERLVAR(var,type)
1870 # define PERLVARI(var,type,init) PL_curinterp->var = init;
1871 # define PERLVARIC(var,type,init) PL_curinterp->var = init;
1872 # include "intrpvar.h"
1873 # ifndef USE_THREADS
1874 # include "thrdvar.h"
1880 # define PERLVAR(var,type)
1881 # define PERLVARI(var,type,init) PL_##var = init;
1882 # define PERLVARIC(var,type,init) PL_##var = init;
1883 # include "intrpvar.h"
1884 # ifndef USE_THREADS
1885 # include "thrdvar.h"
1896 init_main_stash(void)
1901 /* Note that strtab is a rather special HV. Assumptions are made
1902 about not iterating on it, and not adding tie magic to it.
1903 It is properly deallocated in perl_destruct() */
1904 PL_strtab = newHV();
1905 HvSHAREKEYS_off(PL_strtab); /* mandatory */
1906 hv_ksplit(PL_strtab, 512);
1908 PL_curstash = PL_defstash = newHV();
1909 PL_curstname = newSVpv("main",4);
1910 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
1911 SvREFCNT_dec(GvHV(gv));
1912 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
1914 HvNAME(PL_defstash) = savepv("main");
1915 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
1916 GvMULTI_on(PL_incgv);
1917 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
1918 GvMULTI_on(PL_hintgv);
1919 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
1920 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
1921 GvMULTI_on(PL_errgv);
1922 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
1923 GvMULTI_on(PL_replgv);
1924 (void)form("%240s",""); /* Preallocate temp - for immediate signals. */
1925 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
1926 sv_setpvn(ERRSV, "", 0);
1927 PL_curstash = PL_defstash;
1928 PL_compiling.cop_stash = PL_defstash;
1929 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
1930 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
1931 /* We must init $/ before switches are processed. */
1932 sv_setpvn(GvSV(gv_fetchpv("/", TRUE, SVt_PV)), "\n", 1);
1936 open_script(char *scriptname, bool dosearch, SV *sv, int *fdscript)
1944 PL_origfilename = savepv("-e");
1947 /* if find_script() returns, it returns a malloc()-ed value */
1948 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
1950 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
1951 char *s = scriptname + 8;
1952 *fdscript = atoi(s);
1956 scriptname = savepv(s + 1);
1957 Safefree(PL_origfilename);
1958 PL_origfilename = scriptname;
1963 PL_curcop->cop_filegv = gv_fetchfile(PL_origfilename);
1964 if (strEQ(PL_origfilename,"-"))
1966 if (*fdscript >= 0) {
1967 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
1968 #if defined(HAS_FCNTL) && defined(F_SETFD)
1970 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
1973 else if (PL_preprocess) {
1974 char *cpp_cfg = CPPSTDIN;
1975 SV *cpp = newSVpv("",0);
1976 SV *cmd = NEWSV(0,0);
1978 if (strEQ(cpp_cfg, "cppstdin"))
1979 sv_catpvf(cpp, "%s/", BIN_EXP);
1980 sv_catpv(cpp, cpp_cfg);
1983 sv_catpv(sv,PRIVLIB_EXP);
1987 sed %s -e \"/^[^#]/b\" \
1988 -e \"/^#[ ]*include[ ]/b\" \
1989 -e \"/^#[ ]*define[ ]/b\" \
1990 -e \"/^#[ ]*if[ ]/b\" \
1991 -e \"/^#[ ]*ifdef[ ]/b\" \
1992 -e \"/^#[ ]*ifndef[ ]/b\" \
1993 -e \"/^#[ ]*else/b\" \
1994 -e \"/^#[ ]*elif[ ]/b\" \
1995 -e \"/^#[ ]*undef[ ]/b\" \
1996 -e \"/^#[ ]*endif/b\" \
1999 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2002 %s %s -e '/^[^#]/b' \
2003 -e '/^#[ ]*include[ ]/b' \
2004 -e '/^#[ ]*define[ ]/b' \
2005 -e '/^#[ ]*if[ ]/b' \
2006 -e '/^#[ ]*ifdef[ ]/b' \
2007 -e '/^#[ ]*ifndef[ ]/b' \
2008 -e '/^#[ ]*else/b' \
2009 -e '/^#[ ]*elif[ ]/b' \
2010 -e '/^#[ ]*undef[ ]/b' \
2011 -e '/^#[ ]*endif/b' \
2019 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2021 scriptname, cpp, sv, CPPMINUS);
2022 PL_doextract = FALSE;
2023 #ifdef IAMSUID /* actually, this is caught earlier */
2024 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2026 (void)seteuid(PL_uid); /* musn't stay setuid root */
2029 (void)setreuid((Uid_t)-1, PL_uid);
2031 #ifdef HAS_SETRESUID
2032 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2034 PerlProc_setuid(PL_uid);
2038 if (PerlProc_geteuid() != PL_uid)
2039 croak("Can't do seteuid!\n");
2041 #endif /* IAMSUID */
2042 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2046 else if (!*scriptname) {
2047 forbid_setid("program input from stdin");
2048 PL_rsfp = PerlIO_stdin();
2051 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2052 #if defined(HAS_FCNTL) && defined(F_SETFD)
2054 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2059 #ifndef IAMSUID /* in case script is not readable before setuid */
2061 PerlLIO_stat(SvPVX(GvSV(PL_curcop->cop_filegv)),&PL_statbuf) >= 0 &&
2062 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2065 PerlProc_execv(form("%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv);
2066 croak("Can't do setuid\n");
2070 croak("Can't open perl script \"%s\": %s\n",
2071 SvPVX(GvSV(PL_curcop->cop_filegv)), Strerror(errno));
2076 validate_suid(char *validarg, char *scriptname, int fdscript)
2080 /* do we need to emulate setuid on scripts? */
2082 /* This code is for those BSD systems that have setuid #! scripts disabled
2083 * in the kernel because of a security problem. Merely defining DOSUID
2084 * in perl will not fix that problem, but if you have disabled setuid
2085 * scripts in the kernel, this will attempt to emulate setuid and setgid
2086 * on scripts that have those now-otherwise-useless bits set. The setuid
2087 * root version must be called suidperl or sperlN.NNN. If regular perl
2088 * discovers that it has opened a setuid script, it calls suidperl with
2089 * the same argv that it had. If suidperl finds that the script it has
2090 * just opened is NOT setuid root, it sets the effective uid back to the
2091 * uid. We don't just make perl setuid root because that loses the
2092 * effective uid we had before invoking perl, if it was different from the
2095 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2096 * be defined in suidperl only. suidperl must be setuid root. The
2097 * Configure script will set this up for you if you want it.
2104 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2105 croak("Can't stat script \"%s\"",PL_origfilename);
2106 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2110 #ifndef HAS_SETREUID
2111 /* On this access check to make sure the directories are readable,
2112 * there is actually a small window that the user could use to make
2113 * filename point to an accessible directory. So there is a faint
2114 * chance that someone could execute a setuid script down in a
2115 * non-accessible directory. I don't know what to do about that.
2116 * But I don't think it's too important. The manual lies when
2117 * it says access() is useful in setuid programs.
2119 if (PerlLIO_access(SvPVX(GvSV(PL_curcop->cop_filegv)),1)) /*double check*/
2120 croak("Permission denied");
2122 /* If we can swap euid and uid, then we can determine access rights
2123 * with a simple stat of the file, and then compare device and
2124 * inode to make sure we did stat() on the same file we opened.
2125 * Then we just have to make sure he or she can execute it.
2128 struct stat tmpstatbuf;
2132 setreuid(PL_euid,PL_uid) < 0
2135 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2138 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2139 croak("Can't swap uid and euid"); /* really paranoid */
2140 if (PerlLIO_stat(SvPVX(GvSV(PL_curcop->cop_filegv)),&tmpstatbuf) < 0)
2141 croak("Permission denied"); /* testing full pathname here */
2142 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2143 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2144 (void)PerlIO_close(PL_rsfp);
2145 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2146 PerlIO_printf(PL_rsfp,
2147 "User %ld tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2148 (Filename of set-id script was %s, uid %ld gid %ld.)\n\nSincerely,\nperl\n",
2149 (long)PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2150 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
2151 SvPVX(GvSV(PL_curcop->cop_filegv)),
2152 (long)PL_statbuf.st_uid, (long)PL_statbuf.st_gid);
2153 (void)PerlProc_pclose(PL_rsfp);
2155 croak("Permission denied\n");
2159 setreuid(PL_uid,PL_euid) < 0
2161 # if defined(HAS_SETRESUID)
2162 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2165 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2166 croak("Can't reswap uid and euid");
2167 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2168 croak("Permission denied\n");
2170 #endif /* HAS_SETREUID */
2171 #endif /* IAMSUID */
2173 if (!S_ISREG(PL_statbuf.st_mode))
2174 croak("Permission denied");
2175 if (PL_statbuf.st_mode & S_IWOTH)
2176 croak("Setuid/gid script is writable by world");
2177 PL_doswitches = FALSE; /* -s is insecure in suid */
2178 PL_curcop->cop_line++;
2179 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2180 strnNE(SvPV(PL_linestr,PL_na),"#!",2) ) /* required even on Sys V */
2181 croak("No #! line");
2182 s = SvPV(PL_linestr,PL_na)+2;
2184 while (!isSPACE(*s)) s++;
2185 for (s2 = s; (s2 > SvPV(PL_linestr,PL_na)+2 &&
2186 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2187 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2188 croak("Not a perl script");
2189 while (*s == ' ' || *s == '\t') s++;
2191 * #! arg must be what we saw above. They can invoke it by
2192 * mentioning suidperl explicitly, but they may not add any strange
2193 * arguments beyond what #! says if they do invoke suidperl that way.
2195 len = strlen(validarg);
2196 if (strEQ(validarg," PHOOEY ") ||
2197 strnNE(s,validarg,len) || !isSPACE(s[len]))
2198 croak("Args must match #! line");
2201 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2202 PL_euid == PL_statbuf.st_uid)
2204 croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2205 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2206 #endif /* IAMSUID */
2208 if (PL_euid) { /* oops, we're not the setuid root perl */
2209 (void)PerlIO_close(PL_rsfp);
2212 PerlProc_execv(form("%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv);
2214 croak("Can't do setuid\n");
2217 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2219 (void)setegid(PL_statbuf.st_gid);
2222 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2224 #ifdef HAS_SETRESGID
2225 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2227 PerlProc_setgid(PL_statbuf.st_gid);
2231 if (PerlProc_getegid() != PL_statbuf.st_gid)
2232 croak("Can't do setegid!\n");
2234 if (PL_statbuf.st_mode & S_ISUID) {
2235 if (PL_statbuf.st_uid != PL_euid)
2237 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2240 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2242 #ifdef HAS_SETRESUID
2243 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2245 PerlProc_setuid(PL_statbuf.st_uid);
2249 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2250 croak("Can't do seteuid!\n");
2252 else if (PL_uid) { /* oops, mustn't run as root */
2254 (void)seteuid((Uid_t)PL_uid);
2257 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2259 #ifdef HAS_SETRESUID
2260 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2262 PerlProc_setuid((Uid_t)PL_uid);
2266 if (PerlProc_geteuid() != PL_uid)
2267 croak("Can't do seteuid!\n");
2270 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2271 croak("Permission denied\n"); /* they can't do this */
2274 else if (PL_preprocess)
2275 croak("-P not allowed for setuid/setgid script\n");
2276 else if (fdscript >= 0)
2277 croak("fd script not allowed in suidperl\n");
2279 croak("Script is not setuid/setgid in suidperl\n");
2281 /* We absolutely must clear out any saved ids here, so we */
2282 /* exec the real perl, substituting fd script for scriptname. */
2283 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2284 PerlIO_rewind(PL_rsfp);
2285 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2286 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2287 if (!PL_origargv[which])
2288 croak("Permission denied");
2289 PL_origargv[which] = savepv(form("/dev/fd/%d/%s",
2290 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
2291 #if defined(HAS_FCNTL) && defined(F_SETFD)
2292 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
2294 PerlProc_execv(form("%s/perl%s", BIN_EXP, PL_patchlevel), PL_origargv);/* try again */
2295 croak("Can't do setuid\n");
2296 #endif /* IAMSUID */
2298 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
2299 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
2301 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
2302 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
2304 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
2307 croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2308 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2309 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
2310 /* not set-id, must be wrapped */
2316 find_beginning(void)
2318 register char *s, *s2;
2320 /* skip forward in input to the real script? */
2323 while (PL_doextract) {
2324 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
2325 croak("No Perl script found in input\n");
2326 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
2327 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
2328 PL_doextract = FALSE;
2329 while (*s && !(isSPACE (*s) || *s == '#')) s++;
2331 while (*s == ' ' || *s == '\t') s++;
2333 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
2334 if (strnEQ(s2-4,"perl",4))
2336 while (s = moreswitches(s)) ;
2338 if (PL_cddir && PerlDir_chdir(PL_cddir) < 0)
2339 croak("Can't chdir to %s",PL_cddir);
2348 PL_uid = (int)PerlProc_getuid();
2349 PL_euid = (int)PerlProc_geteuid();
2350 PL_gid = (int)PerlProc_getgid();
2351 PL_egid = (int)PerlProc_getegid();
2353 PL_uid |= PL_gid << 16;
2354 PL_euid |= PL_egid << 16;
2356 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
2360 forbid_setid(char *s)
2362 if (PL_euid != PL_uid)
2363 croak("No %s allowed while running setuid", s);
2364 if (PL_egid != PL_gid)
2365 croak("No %s allowed while running setgid", s);
2372 PL_curstash = PL_debstash;
2373 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
2374 AvREAL_off(PL_dbargs);
2375 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
2376 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
2377 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
2378 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
2379 sv_setiv(PL_DBsingle, 0);
2380 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
2381 sv_setiv(PL_DBtrace, 0);
2382 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
2383 sv_setiv(PL_DBsignal, 0);
2384 PL_curstash = PL_defstash;
2387 #ifndef STRESS_REALLOC
2388 #define REASONABLE(size) (size)
2390 #define REASONABLE(size) (1) /* unreasonable */
2394 init_stacks(ARGSproto)
2396 /* start with 128-item stack and 8K cxstack */
2397 PL_curstackinfo = new_stackinfo(REASONABLE(128),
2398 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
2399 PL_curstackinfo->si_type = PERLSI_MAIN;
2400 PL_curstack = PL_curstackinfo->si_stack;
2401 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
2403 PL_stack_base = AvARRAY(PL_curstack);
2404 PL_stack_sp = PL_stack_base;
2405 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
2407 New(50,PL_tmps_stack,REASONABLE(128),SV*);
2410 PL_tmps_max = REASONABLE(128);
2412 New(54,PL_markstack,REASONABLE(32),I32);
2413 PL_markstack_ptr = PL_markstack;
2414 PL_markstack_max = PL_markstack + REASONABLE(32);
2418 New(54,PL_scopestack,REASONABLE(32),I32);
2419 PL_scopestack_ix = 0;
2420 PL_scopestack_max = REASONABLE(32);
2422 New(54,PL_savestack,REASONABLE(128),ANY);
2423 PL_savestack_ix = 0;
2424 PL_savestack_max = REASONABLE(128);
2426 New(54,PL_retstack,REASONABLE(16),OP*);
2428 PL_retstack_max = REASONABLE(16);
2437 while (PL_curstackinfo->si_next)
2438 PL_curstackinfo = PL_curstackinfo->si_next;
2439 while (PL_curstackinfo) {
2440 PERL_SI *p = PL_curstackinfo->si_prev;
2441 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
2442 Safefree(PL_curstackinfo->si_cxstack);
2443 Safefree(PL_curstackinfo);
2444 PL_curstackinfo = p;
2446 Safefree(PL_tmps_stack);
2447 Safefree(PL_markstack);
2448 Safefree(PL_scopestack);
2449 Safefree(PL_savestack);
2450 Safefree(PL_retstack);
2452 Safefree(PL_debname);
2453 Safefree(PL_debdelim);
2458 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
2469 lex_start(PL_linestr);
2471 PL_subname = newSVpv("main",4);
2475 init_predump_symbols(void)
2481 sv_setpvn(perl_get_sv("\"", TRUE), " ", 1);
2482 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
2483 GvMULTI_on(PL_stdingv);
2484 IoIFP(GvIOp(PL_stdingv)) = PerlIO_stdin();
2485 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
2487 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(PL_stdingv));
2489 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
2491 IoOFP(GvIOp(tmpgv)) = IoIFP(GvIOp(tmpgv)) = PerlIO_stdout();
2493 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
2495 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(PL_defoutgv));
2497 othergv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
2498 GvMULTI_on(othergv);
2499 IoOFP(GvIOp(othergv)) = IoIFP(GvIOp(othergv)) = PerlIO_stderr();
2500 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
2502 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(othergv));
2504 PL_statname = NEWSV(66,0); /* last filename we did stat on */
2507 PL_osname = savepv(OSNAME);
2511 init_postdump_symbols(register int argc, register char **argv, register char **env)
2518 argc--,argv++; /* skip name of script */
2519 if (PL_doswitches) {
2520 for (; argc > 0 && **argv == '-'; argc--,argv++) {
2523 if (argv[0][1] == '-') {
2527 if (s = strchr(argv[0], '=')) {
2529 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
2532 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
2535 PL_toptarget = NEWSV(0,0);
2536 sv_upgrade(PL_toptarget, SVt_PVFM);
2537 sv_setpvn(PL_toptarget, "", 0);
2538 PL_bodytarget = NEWSV(0,0);
2539 sv_upgrade(PL_bodytarget, SVt_PVFM);
2540 sv_setpvn(PL_bodytarget, "", 0);
2541 PL_formtarget = PL_bodytarget;
2544 if (tmpgv = gv_fetchpv("0",TRUE, SVt_PV)) {
2545 sv_setpv(GvSV(tmpgv),PL_origfilename);
2546 magicname("0", "0", 1);
2548 if (tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))
2549 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
2550 if (PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV)) {
2551 GvMULTI_on(PL_argvgv);
2552 (void)gv_AVadd(PL_argvgv);
2553 av_clear(GvAVn(PL_argvgv));
2554 for (; argc > 0; argc--,argv++) {
2555 av_push(GvAVn(PL_argvgv),newSVpv(argv[0],0));
2558 if (PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV)) {
2560 GvMULTI_on(PL_envgv);
2561 hv = GvHVn(PL_envgv);
2562 hv_magic(hv, PL_envgv, 'E');
2563 #ifndef VMS /* VMS doesn't have environ array */
2564 /* Note that if the supplied env parameter is actually a copy
2565 of the global environ then it may now point to free'd memory
2566 if the environment has been modified since. To avoid this
2567 problem we treat env==NULL as meaning 'use the default'
2572 environ[0] = Nullch;
2573 for (; *env; env++) {
2574 if (!(s = strchr(*env,'=')))
2580 sv = newSVpv(s--,0);
2581 (void)hv_store(hv, *env, s - *env, sv, 0);
2583 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
2584 /* Sins of the RTL. See note in my_setenv(). */
2585 (void)PerlEnv_putenv(savepv(*env));
2589 #ifdef DYNAMIC_ENV_FETCH
2590 HvNAME(hv) = savepv(ENV_HV_NAME);
2594 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
2595 sv_setiv(GvSV(tmpgv), (IV)getpid());
2604 s = PerlEnv_getenv("PERL5LIB");
2608 incpush(PerlEnv_getenv("PERLLIB"), FALSE);
2610 /* Treat PERL5?LIB as a possible search list logical name -- the
2611 * "natural" VMS idiom for a Unix path string. We allow each
2612 * element to be a set of |-separated directories for compatibility.
2616 if (my_trnlnm("PERL5LIB",buf,0))
2617 do { incpush(buf,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
2619 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE);
2623 /* Use the ~-expanded versions of APPLLIB (undocumented),
2624 ARCHLIB PRIVLIB SITEARCH and SITELIB
2627 incpush(APPLLIB_EXP, TRUE);
2631 incpush(ARCHLIB_EXP, FALSE);
2634 #define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
2637 incpush(PRIVLIB_EXP, TRUE);
2639 incpush(PRIVLIB_EXP, FALSE);
2643 incpush(SITEARCH_EXP, FALSE);
2647 incpush(SITELIB_EXP, TRUE);
2649 incpush(SITELIB_EXP, FALSE);
2653 incpush(".", FALSE);
2657 # define PERLLIB_SEP ';'
2660 # define PERLLIB_SEP '|'
2662 # define PERLLIB_SEP ':'
2665 #ifndef PERLLIB_MANGLE
2666 # define PERLLIB_MANGLE(s,n) (s)
2670 incpush(char *p, int addsubdirs)
2672 SV *subdir = Nullsv;
2678 subdir = sv_newmortal();
2679 if (!PL_archpat_auto) {
2680 STRLEN len = (sizeof(ARCHNAME) + strlen(PL_patchlevel)
2681 + sizeof("//auto"));
2682 New(55, PL_archpat_auto, len, char);
2683 sprintf(PL_archpat_auto, "/%s/%s/auto", ARCHNAME, PL_patchlevel);
2685 for (len = sizeof(ARCHNAME) + 2;
2686 PL_archpat_auto[len] != '\0' && PL_archpat_auto[len] != '/'; len++)
2687 if (PL_archpat_auto[len] == '.') PL_archpat_auto[len] = '_';
2692 /* Break at all separators */
2694 SV *libdir = NEWSV(55,0);
2697 /* skip any consecutive separators */
2698 while ( *p == PERLLIB_SEP ) {
2699 /* Uncomment the next line for PATH semantics */
2700 /* av_push(GvAVn(PL_incgv), newSVpv(".", 1)); */
2704 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
2705 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
2710 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
2711 p = Nullch; /* break out */
2715 * BEFORE pushing libdir onto @INC we may first push version- and
2716 * archname-specific sub-directories.
2719 struct stat tmpstatbuf;
2724 if ((unix = tounixspec_ts(SvPV(libdir,PL_na),Nullch)) != Nullch) {
2726 while (unix[len-1] == '/') len--; /* Cosmetic */
2727 sv_usepvn(libdir,unix,len);
2730 PerlIO_printf(PerlIO_stderr(),
2731 "Failed to unixify @INC element \"%s\"\n",
2732 SvPV(libdir,PL_na));
2734 /* .../archname/version if -d .../archname/version/auto */
2735 sv_setsv(subdir, libdir);
2736 sv_catpv(subdir, PL_archpat_auto);
2737 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2738 S_ISDIR(tmpstatbuf.st_mode))
2739 av_push(GvAVn(PL_incgv),
2740 newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2742 /* .../archname if -d .../archname/auto */
2743 sv_insert(subdir, SvCUR(libdir) + sizeof(ARCHNAME),
2744 strlen(PL_patchlevel) + 1, "", 0);
2745 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2746 S_ISDIR(tmpstatbuf.st_mode))
2747 av_push(GvAVn(PL_incgv),
2748 newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2751 /* finally push this lib directory on the end of @INC */
2752 av_push(GvAVn(PL_incgv), libdir);
2757 STATIC struct perl_thread *
2760 struct perl_thread *thr;
2763 Newz(53, thr, 1, struct perl_thread);
2764 PL_curcop = &PL_compiling;
2765 thr->cvcache = newHV();
2766 thr->threadsv = newAV();
2767 /* thr->threadsvp is set when find_threadsv is called */
2768 thr->specific = newAV();
2769 thr->errhv = newHV();
2770 thr->flags = THRf_R_JOINABLE;
2771 MUTEX_INIT(&thr->mutex);
2772 /* Handcraft thrsv similarly to mess_sv */
2773 New(53, PL_thrsv, 1, SV);
2774 Newz(53, xpv, 1, XPV);
2775 SvFLAGS(PL_thrsv) = SVt_PV;
2776 SvANY(PL_thrsv) = (void*)xpv;
2777 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
2778 SvPVX(PL_thrsv) = (char*)thr;
2779 SvCUR_set(PL_thrsv, sizeof(thr));
2780 SvLEN_set(PL_thrsv, sizeof(thr));
2781 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
2782 thr->oursv = PL_thrsv;
2783 PL_chopset = " \n-";
2785 MUTEX_LOCK(&PL_threads_mutex);
2790 MUTEX_UNLOCK(&PL_threads_mutex);
2792 #ifdef HAVE_THREAD_INTERN
2793 init_thread_intern(thr);
2796 #ifdef SET_THREAD_SELF
2797 SET_THREAD_SELF(thr);
2799 thr->self = pthread_self();
2800 #endif /* SET_THREAD_SELF */
2804 * These must come after the SET_THR because sv_setpvn does
2805 * SvTAINT and the taint fields require dTHR.
2807 PL_toptarget = NEWSV(0,0);
2808 sv_upgrade(PL_toptarget, SVt_PVFM);
2809 sv_setpvn(PL_toptarget, "", 0);
2810 PL_bodytarget = NEWSV(0,0);
2811 sv_upgrade(PL_bodytarget, SVt_PVFM);
2812 sv_setpvn(PL_bodytarget, "", 0);
2813 PL_formtarget = PL_bodytarget;
2814 thr->errsv = newSVpv("", 0);
2815 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
2818 PL_regcompp = FUNC_NAME_TO_PTR(pregcomp);
2819 PL_regexecp = FUNC_NAME_TO_PTR(regexec_flags);
2821 PL_reginterp_cnt = 0;
2825 #endif /* USE_THREADS */
2828 call_list(I32 oldscope, AV *paramList)
2831 line_t oldline = PL_curcop->cop_line;
2836 while (AvFILL(paramList) >= 0) {
2837 CV *cv = (CV*)av_shift(paramList);
2845 PUSHMARK(PL_stack_sp);
2846 perl_call_sv((SV*)cv, G_EVAL|G_DISCARD);
2847 (void)SvPV(atsv, len);
2850 PL_curcop = &PL_compiling;
2851 PL_curcop->cop_line = oldline;
2852 if (paramList == PL_beginav)
2853 sv_catpv(atsv, "BEGIN failed--compilation aborted");
2855 sv_catpv(atsv, "END failed--cleanup aborted");
2856 while (PL_scopestack_ix > oldscope)
2858 croak("%s", SvPVX(atsv));
2866 /* my_exit() was called */
2867 while (PL_scopestack_ix > oldscope)
2870 PL_curstash = PL_defstash;
2872 call_list(oldscope, PL_endav);
2874 PL_curcop = &PL_compiling;
2875 PL_curcop->cop_line = oldline;
2876 if (PL_statusvalue) {
2877 if (paramList == PL_beginav)
2878 croak("BEGIN failed--compilation aborted");
2880 croak("END failed--cleanup aborted");
2885 if (!PL_restartop) {
2886 PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
2891 PL_curcop = &PL_compiling;
2892 PL_curcop->cop_line = oldline;
2904 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
2905 thr, (unsigned long) status));
2914 STATUS_NATIVE_SET(status);
2921 my_failure_exit(void)
2924 if (vaxc$errno & 1) {
2925 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
2926 STATUS_NATIVE_SET(44);
2929 if (!vaxc$errno && errno) /* unlikely */
2930 STATUS_NATIVE_SET(44);
2932 STATUS_NATIVE_SET(vaxc$errno);
2937 STATUS_POSIX_SET(errno);
2939 exitstatus = STATUS_POSIX >> 8;
2940 if (exitstatus & 255)
2941 STATUS_POSIX_SET(exitstatus);
2943 STATUS_POSIX_SET(255);
2953 register PERL_CONTEXT *cx;
2958 SvREFCNT_dec(PL_e_script);
2959 PL_e_script = Nullsv;
2962 POPSTACK_TO(PL_mainstack);
2963 if (cxstack_ix >= 0) {
2966 POPBLOCK(cx,PL_curpm);
2975 #endif /* PERL_OBJECT */
2981 read_e_script(CPerlObj *pPerl, int idx, SV *buf_sv, int maxlen)
2983 read_e_script(int idx, SV *buf_sv, int maxlen)
2987 p = SvPVX(PL_e_script);
2988 nl = strchr(p, '\n');
2989 nl = (nl) ? nl+1 : SvEND(PL_e_script);
2991 filter_del(read_e_script);
2994 sv_catpvn(buf_sv, p, nl-p);
2995 sv_chop(PL_e_script, nl);