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_strtab_mutex);
557 MUTEX_DESTROY(&PL_sv_mutex);
558 MUTEX_DESTROY(&PL_eval_mutex);
559 COND_DESTROY(&PL_eval_cond);
561 /* As the penultimate thing, free the non-arena SV for thrsv */
562 Safefree(SvPVX(PL_thrsv));
563 Safefree(SvANY(PL_thrsv));
566 #endif /* USE_THREADS */
568 /* As the absolutely last thing, free the non-arena SV for mess() */
571 /* it could have accumulated taint magic */
572 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
575 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
576 moremagic = mg->mg_moremagic;
577 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
578 Safefree(mg->mg_ptr);
582 /* we know that type >= SVt_PV */
583 SvOOK_off(PL_mess_sv);
584 Safefree(SvPVX(PL_mess_sv));
585 Safefree(SvANY(PL_mess_sv));
586 Safefree(PL_mess_sv);
593 CPerlObj::perl_free(void)
595 perl_free(PerlInterpreter *sv_interp)
601 if (!(PL_curinterp = sv_interp))
609 CPerlObj::perl_atexit(void (*fn) (CPerlObj*,void *), void *ptr)
611 perl_atexit(void (*fn) (void *), void *ptr)
614 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
615 PL_exitlist[PL_exitlistlen].fn = fn;
616 PL_exitlist[PL_exitlistlen].ptr = ptr;
622 CPerlObj::perl_parse(void (*xsinit) (CPerlObj*), int argc, char **argv, char **env)
624 perl_parse(PerlInterpreter *sv_interp, void (*xsinit) (void), int argc, char **argv, char **env)
630 char *scriptname = NULL;
631 VOL bool dosearch = FALSE;
639 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
642 croak("suidperl is no longer needed since the kernel can now execute\n\
643 setuid perl scripts securely.\n");
648 if (!(PL_curinterp = sv_interp))
652 #if defined(NeXT) && defined(__DYNAMIC__)
653 _dyld_lookup_and_bind
654 ("__environ", (unsigned long *) &environ_pointer, NULL);
659 #ifndef VMS /* VMS doesn't have environ array */
660 PL_origenviron = environ;
665 /* Come here if running an undumped a.out. */
667 PL_origfilename = savepv(argv[0]);
668 PL_do_undump = FALSE;
669 cxstack_ix = -1; /* start label stack again */
671 init_postdump_symbols(argc,argv,env);
676 PL_curpad = AvARRAY(PL_comppad);
677 op_free(PL_main_root);
678 PL_main_root = Nullop;
680 PL_main_start = Nullop;
681 SvREFCNT_dec(PL_main_cv);
685 oldscope = PL_scopestack_ix;
686 PL_dowarn = G_WARN_OFF;
694 /* my_exit() was called */
695 while (PL_scopestack_ix > oldscope)
698 PL_curstash = PL_defstash;
700 call_list(oldscope, PL_endav);
702 return STATUS_NATIVE_EXPORT;
705 PerlIO_printf(PerlIO_stderr(), "panic: top_env\n");
709 sv_setpvn(PL_linestr,"",0);
710 sv = newSVpv("",0); /* first used for -I flags */
714 for (argc--,argv++; argc > 0; argc--,argv++) {
715 if (argv[0][0] != '-' || !argv[0][1])
719 validarg = " PHOOEY ";
747 if (s = moreswitches(s))
757 if (PL_euid != PL_uid || PL_egid != PL_gid)
758 croak("No -e allowed in setuid scripts");
760 PL_e_script = newSVpv("",0);
761 filter_add(read_e_script, NULL);
764 sv_catpv(PL_e_script, s);
766 sv_catpv(PL_e_script, argv[1]);
770 croak("No code specified for -e");
771 sv_catpv(PL_e_script, "\n");
774 case 'I': /* -I handled both here and in moreswitches() */
776 if (!*++s && (s=argv[1]) != Nullch) {
779 while (s && isSPACE(*s))
783 for (e = s; *e && !isSPACE(*e); e++) ;
790 } /* XXX else croak? */
794 PL_preprocess = TRUE;
804 PL_preambleav = newAV();
805 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
807 PL_Sv = newSVpv("print myconfig();",0);
809 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
811 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
813 #if defined(DEBUGGING) || defined(NO_EMBED) || defined(MULTIPLICITY)
814 sv_catpv(PL_Sv,"\" Compile-time options:");
816 sv_catpv(PL_Sv," DEBUGGING");
819 sv_catpv(PL_Sv," NO_EMBED");
822 sv_catpv(PL_Sv," MULTIPLICITY");
824 sv_catpv(PL_Sv,"\\n\",");
826 #if defined(LOCAL_PATCH_COUNT)
827 if (LOCAL_PATCH_COUNT > 0) {
829 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
830 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
831 if (PL_localpatches[i])
832 sv_catpvf(PL_Sv,"\" \\t%s\\n\",",PL_localpatches[i]);
836 sv_catpvf(PL_Sv,"\" Built under %s\\n\"",OSNAME);
839 sv_catpvf(PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
841 sv_catpvf(PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
846 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
847 print \" \\%ENV:\\n @env\\n\" if @env; \
848 print \" \\@INC:\\n @INC\\n\";");
851 PL_Sv = newSVpv("config_vars(qw(",0);
852 sv_catpv(PL_Sv, ++s);
853 sv_catpv(PL_Sv, "))");
856 av_push(PL_preambleav, PL_Sv);
857 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
863 PL_cddir = savepv(s);
868 if (!*++s || isSPACE(*s)) {
872 /* catch use of gnu style long options */
873 if (strEQ(s, "version")) {
877 if (strEQ(s, "help")) {
884 croak("Unrecognized switch: -%s (-h will show valid options)",s);
889 if (!PL_tainting && (s = PerlEnv_getenv("PERL5OPT"))) {
900 if (!strchr("DIMUdmw", *s))
901 croak("Illegal switch in PERL5OPT: -%c", *s);
907 scriptname = argv[0];
910 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
912 else if (scriptname == Nullch) {
914 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
922 open_script(scriptname,dosearch,sv,&fdscript);
924 validate_suid(validarg, scriptname,fdscript);
929 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
930 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
931 CvUNIQUE_on(PL_compcv);
933 PL_comppad = newAV();
934 av_push(PL_comppad, Nullsv);
935 PL_curpad = AvARRAY(PL_comppad);
936 PL_comppad_name = newAV();
937 PL_comppad_name_fill = 0;
938 PL_min_intro_pending = 0;
941 av_store(PL_comppad_name, 0, newSVpv("@_", 2));
942 PL_curpad[0] = (SV*)newAV();
943 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
944 CvOWNER(PL_compcv) = 0;
945 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
946 MUTEX_INIT(CvMUTEXP(PL_compcv));
947 #endif /* USE_THREADS */
949 comppadlist = newAV();
950 AvREAL_off(comppadlist);
951 av_store(comppadlist, 0, (SV*)PL_comppad_name);
952 av_store(comppadlist, 1, (SV*)PL_comppad);
953 CvPADLIST(PL_compcv) = comppadlist;
955 boot_core_UNIVERSAL();
958 (*xsinit)(PERL_OBJECT_THIS); /* in case linked C routines want magical variables */
959 #if defined(VMS) || defined(WIN32) || defined(DJGPP)
963 init_predump_symbols();
964 /* init_postdump_symbols not currently designed to be called */
965 /* more than once (ENV isn't cleared first, for example) */
966 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
968 init_postdump_symbols(argc,argv,env);
972 /* now parse the script */
974 SETERRNO(0,SS$_NORMAL);
976 if (yyparse() || PL_error_count) {
978 croak("%s had compilation errors.\n", PL_origfilename);
980 croak("Execution of %s aborted due to compilation errors.\n",
984 PL_curcop->cop_line = 0;
985 PL_curstash = PL_defstash;
986 PL_preprocess = FALSE;
988 SvREFCNT_dec(PL_e_script);
989 PL_e_script = Nullsv;
992 /* now that script is parsed, we can modify record separator */
994 PL_rs = SvREFCNT_inc(PL_nrs);
995 sv_setsv(perl_get_sv("/", TRUE), PL_rs);
999 if (ckWARN(WARN_ONCE))
1000 gv_check(PL_defstash);
1006 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1007 dump_mstats("after compilation:");
1018 CPerlObj::perl_run(void)
1020 perl_run(PerlInterpreter *sv_interp)
1029 if (!(PL_curinterp = sv_interp))
1033 oldscope = PL_scopestack_ix;
1038 cxstack_ix = -1; /* start context stack again */
1041 /* my_exit() was called */
1042 while (PL_scopestack_ix > oldscope)
1045 PL_curstash = PL_defstash;
1047 call_list(oldscope, PL_endav);
1049 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1050 dump_mstats("after execution: ");
1053 return STATUS_NATIVE_EXPORT;
1055 if (!PL_restartop) {
1056 PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
1061 POPSTACK_TO(PL_mainstack);
1065 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1066 PL_sawampersand ? "Enabling" : "Omitting"));
1068 if (!PL_restartop) {
1069 DEBUG_x(dump_all());
1070 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1071 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%lx\n",
1072 (unsigned long) thr));
1075 PerlIO_printf(PerlIO_stderr(), "%s syntax OK\n", PL_origfilename);
1078 if (PERLDB_SINGLE && PL_DBsingle)
1079 sv_setiv(PL_DBsingle, 1);
1081 call_list(oldscope, PL_initav);
1087 PL_op = PL_restartop;
1091 else if (PL_main_start) {
1092 CvDEPTH(PL_main_cv) = 1;
1093 PL_op = PL_main_start;
1103 perl_get_sv(char *name, I32 create)
1107 if (name[1] == '\0' && !isALPHA(name[0])) {
1108 PADOFFSET tmp = find_threadsv(name);
1109 if (tmp != NOT_IN_PAD) {
1111 return THREADSV(tmp);
1114 #endif /* USE_THREADS */
1115 gv = gv_fetchpv(name, create, SVt_PV);
1122 perl_get_av(char *name, I32 create)
1124 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1133 perl_get_hv(char *name, I32 create)
1135 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1144 perl_get_cv(char *name, I32 create)
1146 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1147 if (create && !GvCVu(gv))
1148 return newSUB(start_subparse(FALSE, 0),
1149 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1157 /* Be sure to refetch the stack pointer after calling these routines. */
1160 perl_call_argv(char *sub_name, I32 flags, register char **argv)
1162 /* See G_* flags in cop.h */
1163 /* null terminated arg list */
1170 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1175 return perl_call_pv(sub_name, flags);
1179 perl_call_pv(char *sub_name, I32 flags)
1180 /* name of the subroutine */
1181 /* See G_* flags in cop.h */
1183 return perl_call_sv((SV*)perl_get_cv(sub_name, TRUE), flags);
1187 perl_call_method(char *methname, I32 flags)
1188 /* name of the subroutine */
1189 /* See G_* flags in cop.h */
1195 XPUSHs(sv_2mortal(newSVpv(methname,0)));
1200 return perl_call_sv(*PL_stack_sp--, flags);
1203 /* May be called with any of a CV, a GV, or an SV containing the name. */
1205 perl_call_sv(SV *sv, I32 flags)
1207 /* See G_* flags in cop.h */
1210 LOGOP myop; /* fake syntax tree node */
1214 bool oldcatch = CATCH_GET;
1219 if (flags & G_DISCARD) {
1224 Zero(&myop, 1, LOGOP);
1225 myop.op_next = Nullop;
1226 if (!(flags & G_NOARGS))
1227 myop.op_flags |= OPf_STACKED;
1228 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1229 (flags & G_ARRAY) ? OPf_WANT_LIST :
1234 EXTEND(PL_stack_sp, 1);
1235 *++PL_stack_sp = sv;
1237 oldscope = PL_scopestack_ix;
1239 if (PERLDB_SUB && PL_curstash != PL_debstash
1240 /* Handle first BEGIN of -d. */
1241 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1242 /* Try harder, since this may have been a sighandler, thus
1243 * curstash may be meaningless. */
1244 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1245 && !(flags & G_NODEBUG))
1246 PL_op->op_private |= OPpENTERSUB_DB;
1248 if (flags & G_EVAL) {
1249 cLOGOP->op_other = PL_op;
1251 /* we're trying to emulate pp_entertry() here */
1253 register PERL_CONTEXT *cx;
1254 I32 gimme = GIMME_V;
1259 push_return(PL_op->op_next);
1260 PUSHBLOCK(cx, CXt_EVAL, PL_stack_sp);
1262 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1265 if (flags & G_KEEPERR)
1280 /* my_exit() was called */
1281 PL_curstash = PL_defstash;
1285 croak("Callback called exit");
1290 PL_op = PL_restartop;
1294 PL_stack_sp = PL_stack_base + oldmark;
1295 if (flags & G_ARRAY)
1299 *++PL_stack_sp = &PL_sv_undef;
1307 if (PL_op == (OP*)&myop)
1308 PL_op = pp_entersub(ARGS);
1311 retval = PL_stack_sp - (PL_stack_base + oldmark);
1312 if ((flags & G_EVAL) && !(flags & G_KEEPERR))
1316 if (flags & G_EVAL) {
1317 if (PL_scopestack_ix > oldscope) {
1321 register PERL_CONTEXT *cx;
1333 CATCH_SET(oldcatch);
1335 if (flags & G_DISCARD) {
1336 PL_stack_sp = PL_stack_base + oldmark;
1345 /* Eval a string. The G_EVAL flag is always assumed. */
1348 perl_eval_sv(SV *sv, I32 flags)
1350 /* See G_* flags in cop.h */
1353 UNOP myop; /* fake syntax tree node */
1354 I32 oldmark = SP - PL_stack_base;
1361 if (flags & G_DISCARD) {
1368 Zero(PL_op, 1, UNOP);
1369 EXTEND(PL_stack_sp, 1);
1370 *++PL_stack_sp = sv;
1371 oldscope = PL_scopestack_ix;
1373 if (!(flags & G_NOARGS))
1374 myop.op_flags = OPf_STACKED;
1375 myop.op_next = Nullop;
1376 myop.op_type = OP_ENTEREVAL;
1377 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1378 (flags & G_ARRAY) ? OPf_WANT_LIST :
1380 if (flags & G_KEEPERR)
1381 myop.op_flags |= OPf_SPECIAL;
1391 /* my_exit() was called */
1392 PL_curstash = PL_defstash;
1396 croak("Callback called exit");
1401 PL_op = PL_restartop;
1405 PL_stack_sp = PL_stack_base + oldmark;
1406 if (flags & G_ARRAY)
1410 *++PL_stack_sp = &PL_sv_undef;
1415 if (PL_op == (OP*)&myop)
1416 PL_op = pp_entereval(ARGS);
1419 retval = PL_stack_sp - (PL_stack_base + oldmark);
1420 if (!(flags & G_KEEPERR))
1425 if (flags & G_DISCARD) {
1426 PL_stack_sp = PL_stack_base + oldmark;
1436 perl_eval_pv(char *p, I32 croak_on_error)
1439 SV* sv = newSVpv(p, 0);
1442 perl_eval_sv(sv, G_SCALAR);
1449 if (croak_on_error && SvTRUE(ERRSV))
1450 croak(SvPVx(ERRSV, PL_na));
1455 /* Require a module. */
1458 perl_require_pv(char *pv)
1462 PUSHSTACKi(PERLSI_REQUIRE);
1464 sv = sv_newmortal();
1465 sv_setpv(sv, "require '");
1468 perl_eval_sv(sv, G_DISCARD);
1474 magicname(char *sym, char *name, I32 namlen)
1478 if (gv = gv_fetchpv(sym,TRUE, SVt_PV))
1479 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1483 usage(char *name) /* XXX move this out into a module ? */
1486 /* This message really ought to be max 23 lines.
1487 * Removed -h because the user already knows that opton. Others? */
1489 static char *usage_msg[] = {
1490 "-0[octal] specify record separator (\\0, if no argument)",
1491 "-a autosplit mode with -n or -p (splits $_ into @F)",
1492 "-c check syntax only (runs BEGIN and END blocks)",
1493 "-d[:debugger] run scripts under debugger",
1494 "-D[number/list] set debugging flags (argument is a bit mask or flags)",
1495 "-e 'command' one line of script. Several -e's allowed. Omit [programfile].",
1496 "-F/pattern/ split() pattern for autosplit (-a). The //'s are optional.",
1497 "-i[extension] edit <> files in place (make backup if extension supplied)",
1498 "-Idirectory specify @INC/#include directory (may be used more than once)",
1499 "-l[octal] enable line ending processing, specifies line terminator",
1500 "-[mM][-]module.. executes `use/no module...' before executing your script.",
1501 "-n assume 'while (<>) { ... }' loop around your script",
1502 "-p assume loop like -n but print line also like sed",
1503 "-P run script through C preprocessor before compilation",
1504 "-s enable some switch parsing for switches after script name",
1505 "-S look for the script using PATH environment variable",
1506 "-T turn on tainting checks",
1507 "-u dump core after parsing script",
1508 "-U allow unsafe operations",
1509 "-v print version number, patchlevel plus VERY IMPORTANT perl info",
1510 "-V[:variable] print perl configuration information",
1511 "-w TURN WARNINGS ON FOR COMPILATION OF YOUR SCRIPT. Recommended.",
1512 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
1516 char **p = usage_msg;
1518 printf("\nUsage: %s [switches] [--] [programfile] [arguments]", name);
1520 printf("\n %s", *p++);
1523 /* This routine handles any switches that can be given during run */
1526 moreswitches(char *s)
1535 rschar = scan_oct(s, 4, &numlen);
1536 SvREFCNT_dec(PL_nrs);
1537 if (rschar & ~((U8)~0))
1538 PL_nrs = &PL_sv_undef;
1539 else if (!rschar && numlen >= 2)
1540 PL_nrs = newSVpv("", 0);
1543 PL_nrs = newSVpv(&ch, 1);
1549 PL_splitstr = savepv(s + 1);
1563 if (*s == ':' || *s == '=') {
1564 my_setenv("PERL5DB", form("use Devel::%s;", ++s));
1568 PL_perldb = PERLDB_ALL;
1575 if (isALPHA(s[1])) {
1576 static char debopts[] = "psltocPmfrxuLHXDS";
1579 for (s++; *s && (d = strchr(debopts,*s)); s++)
1580 PL_debug |= 1 << (d - debopts);
1583 PL_debug = atoi(s+1);
1584 for (s++; isDIGIT(*s); s++) ;
1586 PL_debug |= 0x80000000;
1588 warn("Recompile perl with -DDEBUGGING to use -D switch\n");
1589 for (s++; isALNUM(*s); s++) ;
1594 usage(PL_origargv[0]);
1598 Safefree(PL_inplace);
1599 PL_inplace = savepv(s+1);
1601 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
1604 if (*s == '-') /* Additional switches on #! line. */
1608 case 'I': /* -I handled both here and in parse_perl() */
1611 while (*s && isSPACE(*s))
1615 for (e = s; *e && !isSPACE(*e); e++) ;
1616 p = savepvn(s, e-s);
1622 croak("No space allowed after -I");
1630 PL_ors = savepv("\n");
1632 *PL_ors = scan_oct(s, 3 + (*s == '0'), &numlen);
1637 if (RsPARA(PL_nrs)) {
1642 PL_ors = SvPV(PL_nrs, PL_orslen);
1643 PL_ors = savepvn(PL_ors, PL_orslen);
1647 forbid_setid("-M"); /* XXX ? */
1650 forbid_setid("-m"); /* XXX ? */
1655 /* -M-foo == 'no foo' */
1656 if (*s == '-') { use = "no "; ++s; }
1657 sv = newSVpv(use,0);
1659 /* We allow -M'Module qw(Foo Bar)' */
1660 while(isALNUM(*s) || *s==':') ++s;
1662 sv_catpv(sv, start);
1663 if (*(start-1) == 'm') {
1665 croak("Can't use '%c' after -mname", *s);
1666 sv_catpv( sv, " ()");
1669 sv_catpvn(sv, start, s-start);
1670 sv_catpv(sv, " split(/,/,q{");
1675 if (PL_preambleav == NULL)
1676 PL_preambleav = newAV();
1677 av_push(PL_preambleav, sv);
1680 croak("No space allowed after -%c", *(s-1));
1692 PL_doswitches = TRUE;
1697 croak("Too late for \"-T\" option");
1701 PL_do_undump = TRUE;
1709 #if defined(SUBVERSION) && SUBVERSION > 0
1710 printf("\nThis is perl, version 5.%03d_%02d built for %s",
1711 PATCHLEVEL, SUBVERSION, ARCHNAME);
1713 printf("\nThis is perl, version %s built for %s",
1714 PL_patchlevel, ARCHNAME);
1716 #if defined(LOCAL_PATCH_COUNT)
1717 if (LOCAL_PATCH_COUNT > 0)
1718 printf("\n(with %d registered patch%s, see perl -V for more detail)",
1719 LOCAL_PATCH_COUNT, (LOCAL_PATCH_COUNT!=1) ? "es" : "");
1722 printf("\n\nCopyright 1987-1998, Larry Wall\n");
1724 printf("\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
1727 printf("djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n");
1728 printf("djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1998\n");
1731 printf("\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
1732 "Version 5 port Copyright (c) 1994-1998, Andreas Kaiser, Ilya Zakharevich\n");
1735 printf("atariST series port, ++jrb bammi@cadence.com\n");
1738 printf("BeOS port Copyright Tom Spindler, 1997-1998\n");
1741 printf("MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1998\n");
1744 printf("MVS (OS390) port by Mortice Kern Systems, 1997-1998\n");
1747 printf("Stratus VOS port by Paul_Green@stratus.com, 1997-1998\n");
1749 #ifdef BINARY_BUILD_NOTICE
1750 BINARY_BUILD_NOTICE;
1753 Perl may be copied only under the terms of either the Artistic License or the\n\
1754 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
1755 Complete documentation for Perl, including FAQ lists, should be found on\n\
1756 this system using `man perl' or `perldoc perl'. If you have access to the\n\
1757 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
1760 if (! (PL_dowarn & G_WARN_ALL_MASK))
1761 PL_dowarn |= G_WARN_ON;
1765 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
1766 compiling.cop_warnings = WARN_ALL ;
1770 PL_dowarn = G_WARN_ALL_OFF;
1771 compiling.cop_warnings = WARN_NONE ;
1776 if (s[1] == '-') /* Additional switches on #! line. */
1781 #if defined(WIN32) || !defined(PERL_STRICT_CR)
1787 #ifdef ALTERNATE_SHEBANG
1788 case 'S': /* OS/2 needs -S on "extproc" line. */
1796 croak("Can't emulate -%.1s on #! line",s);
1801 /* compliments of Tom Christiansen */
1803 /* unexec() can be found in the Gnu emacs distribution */
1804 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
1815 prog = newSVpv(BIN_EXP, 0);
1816 sv_catpv(prog, "/perl");
1817 file = newSVpv(PL_origfilename, 0);
1818 sv_catpv(file, ".perldump");
1820 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
1821 /* unexec prints msg to stderr in case of failure */
1822 PerlProc_exit(status);
1825 # include <lib$routines.h>
1826 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
1828 ABORT(); /* for use with undump */
1833 /* initialize curinterp */
1838 #ifdef PERL_OBJECT /* XXX kludge */
1841 PL_chopset = " \n-"; \
1842 PL_copline = NOLINE; \
1843 PL_curcop = &PL_compiling;\
1844 PL_curcopdb = NULL; \
1847 PL_laststatval = -1; \
1848 PL_laststype = OP_STAT; \
1849 PL_maxscream = -1; \
1850 PL_maxsysfd = MAXSYSFD; \
1851 PL_statname = Nullsv; \
1852 PL_tmps_floor = -1; \
1854 PL_op_mask = NULL; \
1856 PL_laststatval = -1; \
1857 PL_laststype = OP_STAT; \
1858 PL_mess_sv = Nullsv; \
1859 PL_splitstr = " "; \
1860 PL_generation = 100; \
1861 PL_exitlist = NULL; \
1862 PL_exitlistlen = 0; \
1864 PL_in_clean_objs = FALSE; \
1865 PL_in_clean_all = FALSE; \
1866 PL_profiledata = NULL; \
1868 PL_rsfp_filters = Nullav; \
1872 # ifdef MULTIPLICITY
1873 # define PERLVAR(var,type)
1874 # define PERLVARI(var,type,init) PL_curinterp->var = init;
1875 # define PERLVARIC(var,type,init) PL_curinterp->var = init;
1876 # include "intrpvar.h"
1877 # ifndef USE_THREADS
1878 # include "thrdvar.h"
1884 # define PERLVAR(var,type)
1885 # define PERLVARI(var,type,init) PL_##var = init;
1886 # define PERLVARIC(var,type,init) PL_##var = init;
1887 # include "intrpvar.h"
1888 # ifndef USE_THREADS
1889 # include "thrdvar.h"
1900 init_main_stash(void)
1905 /* Note that strtab is a rather special HV. Assumptions are made
1906 about not iterating on it, and not adding tie magic to it.
1907 It is properly deallocated in perl_destruct() */
1908 PL_strtab = newHV();
1910 MUTEX_INIT(&PL_strtab_mutex);
1912 HvSHAREKEYS_off(PL_strtab); /* mandatory */
1913 hv_ksplit(PL_strtab, 512);
1915 PL_curstash = PL_defstash = newHV();
1916 PL_curstname = newSVpv("main",4);
1917 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
1918 SvREFCNT_dec(GvHV(gv));
1919 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
1921 HvNAME(PL_defstash) = savepv("main");
1922 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
1923 GvMULTI_on(PL_incgv);
1924 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
1925 GvMULTI_on(PL_hintgv);
1926 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
1927 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
1928 GvMULTI_on(PL_errgv);
1929 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
1930 GvMULTI_on(PL_replgv);
1931 (void)form("%240s",""); /* Preallocate temp - for immediate signals. */
1932 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
1933 sv_setpvn(ERRSV, "", 0);
1934 PL_curstash = PL_defstash;
1935 PL_compiling.cop_stash = PL_defstash;
1936 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
1937 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
1938 /* We must init $/ before switches are processed. */
1939 sv_setpvn(GvSV(gv_fetchpv("/", TRUE, SVt_PV)), "\n", 1);
1943 open_script(char *scriptname, bool dosearch, SV *sv, int *fdscript)
1951 PL_origfilename = savepv("-e");
1954 /* if find_script() returns, it returns a malloc()-ed value */
1955 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
1957 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
1958 char *s = scriptname + 8;
1959 *fdscript = atoi(s);
1963 scriptname = savepv(s + 1);
1964 Safefree(PL_origfilename);
1965 PL_origfilename = scriptname;
1970 PL_curcop->cop_filegv = gv_fetchfile(PL_origfilename);
1971 if (strEQ(PL_origfilename,"-"))
1973 if (*fdscript >= 0) {
1974 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
1975 #if defined(HAS_FCNTL) && defined(F_SETFD)
1977 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
1980 else if (PL_preprocess) {
1981 char *cpp_cfg = CPPSTDIN;
1982 SV *cpp = newSVpv("",0);
1983 SV *cmd = NEWSV(0,0);
1985 if (strEQ(cpp_cfg, "cppstdin"))
1986 sv_catpvf(cpp, "%s/", BIN_EXP);
1987 sv_catpv(cpp, cpp_cfg);
1990 sv_catpv(sv,PRIVLIB_EXP);
1994 sed %s -e \"/^[^#]/b\" \
1995 -e \"/^#[ ]*include[ ]/b\" \
1996 -e \"/^#[ ]*define[ ]/b\" \
1997 -e \"/^#[ ]*if[ ]/b\" \
1998 -e \"/^#[ ]*ifdef[ ]/b\" \
1999 -e \"/^#[ ]*ifndef[ ]/b\" \
2000 -e \"/^#[ ]*else/b\" \
2001 -e \"/^#[ ]*elif[ ]/b\" \
2002 -e \"/^#[ ]*undef[ ]/b\" \
2003 -e \"/^#[ ]*endif/b\" \
2006 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2009 %s %s -e '/^[^#]/b' \
2010 -e '/^#[ ]*include[ ]/b' \
2011 -e '/^#[ ]*define[ ]/b' \
2012 -e '/^#[ ]*if[ ]/b' \
2013 -e '/^#[ ]*ifdef[ ]/b' \
2014 -e '/^#[ ]*ifndef[ ]/b' \
2015 -e '/^#[ ]*else/b' \
2016 -e '/^#[ ]*elif[ ]/b' \
2017 -e '/^#[ ]*undef[ ]/b' \
2018 -e '/^#[ ]*endif/b' \
2026 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2028 scriptname, cpp, sv, CPPMINUS);
2029 PL_doextract = FALSE;
2030 #ifdef IAMSUID /* actually, this is caught earlier */
2031 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2033 (void)seteuid(PL_uid); /* musn't stay setuid root */
2036 (void)setreuid((Uid_t)-1, PL_uid);
2038 #ifdef HAS_SETRESUID
2039 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2041 PerlProc_setuid(PL_uid);
2045 if (PerlProc_geteuid() != PL_uid)
2046 croak("Can't do seteuid!\n");
2048 #endif /* IAMSUID */
2049 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2053 else if (!*scriptname) {
2054 forbid_setid("program input from stdin");
2055 PL_rsfp = PerlIO_stdin();
2058 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2059 #if defined(HAS_FCNTL) && defined(F_SETFD)
2061 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2066 #ifndef IAMSUID /* in case script is not readable before setuid */
2068 PerlLIO_stat(SvPVX(GvSV(PL_curcop->cop_filegv)),&PL_statbuf) >= 0 &&
2069 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2072 PerlProc_execv(form("%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv);
2073 croak("Can't do setuid\n");
2077 croak("Can't open perl script \"%s\": %s\n",
2078 SvPVX(GvSV(PL_curcop->cop_filegv)), Strerror(errno));
2083 validate_suid(char *validarg, char *scriptname, int fdscript)
2087 /* do we need to emulate setuid on scripts? */
2089 /* This code is for those BSD systems that have setuid #! scripts disabled
2090 * in the kernel because of a security problem. Merely defining DOSUID
2091 * in perl will not fix that problem, but if you have disabled setuid
2092 * scripts in the kernel, this will attempt to emulate setuid and setgid
2093 * on scripts that have those now-otherwise-useless bits set. The setuid
2094 * root version must be called suidperl or sperlN.NNN. If regular perl
2095 * discovers that it has opened a setuid script, it calls suidperl with
2096 * the same argv that it had. If suidperl finds that the script it has
2097 * just opened is NOT setuid root, it sets the effective uid back to the
2098 * uid. We don't just make perl setuid root because that loses the
2099 * effective uid we had before invoking perl, if it was different from the
2102 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2103 * be defined in suidperl only. suidperl must be setuid root. The
2104 * Configure script will set this up for you if you want it.
2111 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2112 croak("Can't stat script \"%s\"",PL_origfilename);
2113 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2117 #ifndef HAS_SETREUID
2118 /* On this access check to make sure the directories are readable,
2119 * there is actually a small window that the user could use to make
2120 * filename point to an accessible directory. So there is a faint
2121 * chance that someone could execute a setuid script down in a
2122 * non-accessible directory. I don't know what to do about that.
2123 * But I don't think it's too important. The manual lies when
2124 * it says access() is useful in setuid programs.
2126 if (PerlLIO_access(SvPVX(GvSV(PL_curcop->cop_filegv)),1)) /*double check*/
2127 croak("Permission denied");
2129 /* If we can swap euid and uid, then we can determine access rights
2130 * with a simple stat of the file, and then compare device and
2131 * inode to make sure we did stat() on the same file we opened.
2132 * Then we just have to make sure he or she can execute it.
2135 struct stat tmpstatbuf;
2139 setreuid(PL_euid,PL_uid) < 0
2142 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2145 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2146 croak("Can't swap uid and euid"); /* really paranoid */
2147 if (PerlLIO_stat(SvPVX(GvSV(PL_curcop->cop_filegv)),&tmpstatbuf) < 0)
2148 croak("Permission denied"); /* testing full pathname here */
2149 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2150 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2151 (void)PerlIO_close(PL_rsfp);
2152 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2153 PerlIO_printf(PL_rsfp,
2154 "User %ld tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2155 (Filename of set-id script was %s, uid %ld gid %ld.)\n\nSincerely,\nperl\n",
2156 (long)PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2157 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
2158 SvPVX(GvSV(PL_curcop->cop_filegv)),
2159 (long)PL_statbuf.st_uid, (long)PL_statbuf.st_gid);
2160 (void)PerlProc_pclose(PL_rsfp);
2162 croak("Permission denied\n");
2166 setreuid(PL_uid,PL_euid) < 0
2168 # if defined(HAS_SETRESUID)
2169 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2172 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2173 croak("Can't reswap uid and euid");
2174 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2175 croak("Permission denied\n");
2177 #endif /* HAS_SETREUID */
2178 #endif /* IAMSUID */
2180 if (!S_ISREG(PL_statbuf.st_mode))
2181 croak("Permission denied");
2182 if (PL_statbuf.st_mode & S_IWOTH)
2183 croak("Setuid/gid script is writable by world");
2184 PL_doswitches = FALSE; /* -s is insecure in suid */
2185 PL_curcop->cop_line++;
2186 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2187 strnNE(SvPV(PL_linestr,PL_na),"#!",2) ) /* required even on Sys V */
2188 croak("No #! line");
2189 s = SvPV(PL_linestr,PL_na)+2;
2191 while (!isSPACE(*s)) s++;
2192 for (s2 = s; (s2 > SvPV(PL_linestr,PL_na)+2 &&
2193 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2194 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2195 croak("Not a perl script");
2196 while (*s == ' ' || *s == '\t') s++;
2198 * #! arg must be what we saw above. They can invoke it by
2199 * mentioning suidperl explicitly, but they may not add any strange
2200 * arguments beyond what #! says if they do invoke suidperl that way.
2202 len = strlen(validarg);
2203 if (strEQ(validarg," PHOOEY ") ||
2204 strnNE(s,validarg,len) || !isSPACE(s[len]))
2205 croak("Args must match #! line");
2208 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2209 PL_euid == PL_statbuf.st_uid)
2211 croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2212 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2213 #endif /* IAMSUID */
2215 if (PL_euid) { /* oops, we're not the setuid root perl */
2216 (void)PerlIO_close(PL_rsfp);
2219 PerlProc_execv(form("%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv);
2221 croak("Can't do setuid\n");
2224 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2226 (void)setegid(PL_statbuf.st_gid);
2229 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2231 #ifdef HAS_SETRESGID
2232 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2234 PerlProc_setgid(PL_statbuf.st_gid);
2238 if (PerlProc_getegid() != PL_statbuf.st_gid)
2239 croak("Can't do setegid!\n");
2241 if (PL_statbuf.st_mode & S_ISUID) {
2242 if (PL_statbuf.st_uid != PL_euid)
2244 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2247 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2249 #ifdef HAS_SETRESUID
2250 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2252 PerlProc_setuid(PL_statbuf.st_uid);
2256 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2257 croak("Can't do seteuid!\n");
2259 else if (PL_uid) { /* oops, mustn't run as root */
2261 (void)seteuid((Uid_t)PL_uid);
2264 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2266 #ifdef HAS_SETRESUID
2267 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2269 PerlProc_setuid((Uid_t)PL_uid);
2273 if (PerlProc_geteuid() != PL_uid)
2274 croak("Can't do seteuid!\n");
2277 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2278 croak("Permission denied\n"); /* they can't do this */
2281 else if (PL_preprocess)
2282 croak("-P not allowed for setuid/setgid script\n");
2283 else if (fdscript >= 0)
2284 croak("fd script not allowed in suidperl\n");
2286 croak("Script is not setuid/setgid in suidperl\n");
2288 /* We absolutely must clear out any saved ids here, so we */
2289 /* exec the real perl, substituting fd script for scriptname. */
2290 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2291 PerlIO_rewind(PL_rsfp);
2292 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2293 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2294 if (!PL_origargv[which])
2295 croak("Permission denied");
2296 PL_origargv[which] = savepv(form("/dev/fd/%d/%s",
2297 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
2298 #if defined(HAS_FCNTL) && defined(F_SETFD)
2299 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
2301 PerlProc_execv(form("%s/perl%s", BIN_EXP, PL_patchlevel), PL_origargv);/* try again */
2302 croak("Can't do setuid\n");
2303 #endif /* IAMSUID */
2305 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
2306 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
2308 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
2309 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
2311 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
2314 croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2315 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2316 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
2317 /* not set-id, must be wrapped */
2323 find_beginning(void)
2325 register char *s, *s2;
2327 /* skip forward in input to the real script? */
2330 while (PL_doextract) {
2331 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
2332 croak("No Perl script found in input\n");
2333 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
2334 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
2335 PL_doextract = FALSE;
2336 while (*s && !(isSPACE (*s) || *s == '#')) s++;
2338 while (*s == ' ' || *s == '\t') s++;
2340 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
2341 if (strnEQ(s2-4,"perl",4))
2343 while (s = moreswitches(s)) ;
2345 if (PL_cddir && PerlDir_chdir(PL_cddir) < 0)
2346 croak("Can't chdir to %s",PL_cddir);
2355 PL_uid = (int)PerlProc_getuid();
2356 PL_euid = (int)PerlProc_geteuid();
2357 PL_gid = (int)PerlProc_getgid();
2358 PL_egid = (int)PerlProc_getegid();
2360 PL_uid |= PL_gid << 16;
2361 PL_euid |= PL_egid << 16;
2363 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
2367 forbid_setid(char *s)
2369 if (PL_euid != PL_uid)
2370 croak("No %s allowed while running setuid", s);
2371 if (PL_egid != PL_gid)
2372 croak("No %s allowed while running setgid", s);
2379 PL_curstash = PL_debstash;
2380 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
2381 AvREAL_off(PL_dbargs);
2382 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
2383 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
2384 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
2385 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
2386 sv_setiv(PL_DBsingle, 0);
2387 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
2388 sv_setiv(PL_DBtrace, 0);
2389 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
2390 sv_setiv(PL_DBsignal, 0);
2391 PL_curstash = PL_defstash;
2394 #ifndef STRESS_REALLOC
2395 #define REASONABLE(size) (size)
2397 #define REASONABLE(size) (1) /* unreasonable */
2401 init_stacks(ARGSproto)
2403 /* start with 128-item stack and 8K cxstack */
2404 PL_curstackinfo = new_stackinfo(REASONABLE(128),
2405 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
2406 PL_curstackinfo->si_type = PERLSI_MAIN;
2407 PL_curstack = PL_curstackinfo->si_stack;
2408 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
2410 PL_stack_base = AvARRAY(PL_curstack);
2411 PL_stack_sp = PL_stack_base;
2412 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
2414 New(50,PL_tmps_stack,REASONABLE(128),SV*);
2417 PL_tmps_max = REASONABLE(128);
2419 New(54,PL_markstack,REASONABLE(32),I32);
2420 PL_markstack_ptr = PL_markstack;
2421 PL_markstack_max = PL_markstack + REASONABLE(32);
2425 New(54,PL_scopestack,REASONABLE(32),I32);
2426 PL_scopestack_ix = 0;
2427 PL_scopestack_max = REASONABLE(32);
2429 New(54,PL_savestack,REASONABLE(128),ANY);
2430 PL_savestack_ix = 0;
2431 PL_savestack_max = REASONABLE(128);
2433 New(54,PL_retstack,REASONABLE(16),OP*);
2435 PL_retstack_max = REASONABLE(16);
2444 while (PL_curstackinfo->si_next)
2445 PL_curstackinfo = PL_curstackinfo->si_next;
2446 while (PL_curstackinfo) {
2447 PERL_SI *p = PL_curstackinfo->si_prev;
2448 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
2449 Safefree(PL_curstackinfo->si_cxstack);
2450 Safefree(PL_curstackinfo);
2451 PL_curstackinfo = p;
2453 Safefree(PL_tmps_stack);
2454 Safefree(PL_markstack);
2455 Safefree(PL_scopestack);
2456 Safefree(PL_savestack);
2457 Safefree(PL_retstack);
2459 Safefree(PL_debname);
2460 Safefree(PL_debdelim);
2465 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
2476 lex_start(PL_linestr);
2478 PL_subname = newSVpv("main",4);
2482 init_predump_symbols(void)
2488 sv_setpvn(perl_get_sv("\"", TRUE), " ", 1);
2489 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
2490 GvMULTI_on(PL_stdingv);
2491 IoIFP(GvIOp(PL_stdingv)) = PerlIO_stdin();
2492 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
2494 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(PL_stdingv));
2496 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
2498 IoOFP(GvIOp(tmpgv)) = IoIFP(GvIOp(tmpgv)) = PerlIO_stdout();
2500 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
2502 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(PL_defoutgv));
2504 othergv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
2505 GvMULTI_on(othergv);
2506 IoOFP(GvIOp(othergv)) = IoIFP(GvIOp(othergv)) = PerlIO_stderr();
2507 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
2509 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(othergv));
2511 PL_statname = NEWSV(66,0); /* last filename we did stat on */
2514 PL_osname = savepv(OSNAME);
2518 init_postdump_symbols(register int argc, register char **argv, register char **env)
2525 argc--,argv++; /* skip name of script */
2526 if (PL_doswitches) {
2527 for (; argc > 0 && **argv == '-'; argc--,argv++) {
2530 if (argv[0][1] == '-') {
2534 if (s = strchr(argv[0], '=')) {
2536 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
2539 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
2542 PL_toptarget = NEWSV(0,0);
2543 sv_upgrade(PL_toptarget, SVt_PVFM);
2544 sv_setpvn(PL_toptarget, "", 0);
2545 PL_bodytarget = NEWSV(0,0);
2546 sv_upgrade(PL_bodytarget, SVt_PVFM);
2547 sv_setpvn(PL_bodytarget, "", 0);
2548 PL_formtarget = PL_bodytarget;
2551 if (tmpgv = gv_fetchpv("0",TRUE, SVt_PV)) {
2552 sv_setpv(GvSV(tmpgv),PL_origfilename);
2553 magicname("0", "0", 1);
2555 if (tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))
2556 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
2557 if (PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV)) {
2558 GvMULTI_on(PL_argvgv);
2559 (void)gv_AVadd(PL_argvgv);
2560 av_clear(GvAVn(PL_argvgv));
2561 for (; argc > 0; argc--,argv++) {
2562 av_push(GvAVn(PL_argvgv),newSVpv(argv[0],0));
2565 if (PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV)) {
2567 GvMULTI_on(PL_envgv);
2568 hv = GvHVn(PL_envgv);
2569 hv_magic(hv, PL_envgv, 'E');
2570 #ifndef VMS /* VMS doesn't have environ array */
2571 /* Note that if the supplied env parameter is actually a copy
2572 of the global environ then it may now point to free'd memory
2573 if the environment has been modified since. To avoid this
2574 problem we treat env==NULL as meaning 'use the default'
2579 environ[0] = Nullch;
2580 for (; *env; env++) {
2581 if (!(s = strchr(*env,'=')))
2587 sv = newSVpv(s--,0);
2588 (void)hv_store(hv, *env, s - *env, sv, 0);
2590 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
2591 /* Sins of the RTL. See note in my_setenv(). */
2592 (void)PerlEnv_putenv(savepv(*env));
2596 #ifdef DYNAMIC_ENV_FETCH
2597 HvNAME(hv) = savepv(ENV_HV_NAME);
2601 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
2602 sv_setiv(GvSV(tmpgv), (IV)getpid());
2611 s = PerlEnv_getenv("PERL5LIB");
2615 incpush(PerlEnv_getenv("PERLLIB"), FALSE);
2617 /* Treat PERL5?LIB as a possible search list logical name -- the
2618 * "natural" VMS idiom for a Unix path string. We allow each
2619 * element to be a set of |-separated directories for compatibility.
2623 if (my_trnlnm("PERL5LIB",buf,0))
2624 do { incpush(buf,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
2626 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE);
2630 /* Use the ~-expanded versions of APPLLIB (undocumented),
2631 ARCHLIB PRIVLIB SITEARCH and SITELIB
2634 incpush(APPLLIB_EXP, TRUE);
2638 incpush(ARCHLIB_EXP, FALSE);
2641 #define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
2644 incpush(PRIVLIB_EXP, TRUE);
2646 incpush(PRIVLIB_EXP, FALSE);
2650 incpush(SITEARCH_EXP, FALSE);
2654 incpush(SITELIB_EXP, TRUE);
2656 incpush(SITELIB_EXP, FALSE);
2660 incpush(".", FALSE);
2664 # define PERLLIB_SEP ';'
2667 # define PERLLIB_SEP '|'
2669 # define PERLLIB_SEP ':'
2672 #ifndef PERLLIB_MANGLE
2673 # define PERLLIB_MANGLE(s,n) (s)
2677 incpush(char *p, int addsubdirs)
2679 SV *subdir = Nullsv;
2685 subdir = sv_newmortal();
2686 if (!PL_archpat_auto) {
2687 STRLEN len = (sizeof(ARCHNAME) + strlen(PL_patchlevel)
2688 + sizeof("//auto"));
2689 New(55, PL_archpat_auto, len, char);
2690 sprintf(PL_archpat_auto, "/%s/%s/auto", ARCHNAME, PL_patchlevel);
2692 for (len = sizeof(ARCHNAME) + 2;
2693 PL_archpat_auto[len] != '\0' && PL_archpat_auto[len] != '/'; len++)
2694 if (PL_archpat_auto[len] == '.') PL_archpat_auto[len] = '_';
2699 /* Break at all separators */
2701 SV *libdir = NEWSV(55,0);
2704 /* skip any consecutive separators */
2705 while ( *p == PERLLIB_SEP ) {
2706 /* Uncomment the next line for PATH semantics */
2707 /* av_push(GvAVn(PL_incgv), newSVpv(".", 1)); */
2711 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
2712 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
2717 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
2718 p = Nullch; /* break out */
2722 * BEFORE pushing libdir onto @INC we may first push version- and
2723 * archname-specific sub-directories.
2726 struct stat tmpstatbuf;
2731 if ((unix = tounixspec_ts(SvPV(libdir,PL_na),Nullch)) != Nullch) {
2733 while (unix[len-1] == '/') len--; /* Cosmetic */
2734 sv_usepvn(libdir,unix,len);
2737 PerlIO_printf(PerlIO_stderr(),
2738 "Failed to unixify @INC element \"%s\"\n",
2739 SvPV(libdir,PL_na));
2741 /* .../archname/version if -d .../archname/version/auto */
2742 sv_setsv(subdir, libdir);
2743 sv_catpv(subdir, PL_archpat_auto);
2744 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2745 S_ISDIR(tmpstatbuf.st_mode))
2746 av_push(GvAVn(PL_incgv),
2747 newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2749 /* .../archname if -d .../archname/auto */
2750 sv_insert(subdir, SvCUR(libdir) + sizeof(ARCHNAME),
2751 strlen(PL_patchlevel) + 1, "", 0);
2752 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2753 S_ISDIR(tmpstatbuf.st_mode))
2754 av_push(GvAVn(PL_incgv),
2755 newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2758 /* finally push this lib directory on the end of @INC */
2759 av_push(GvAVn(PL_incgv), libdir);
2764 STATIC struct perl_thread *
2767 struct perl_thread *thr;
2770 Newz(53, thr, 1, struct perl_thread);
2771 PL_curcop = &PL_compiling;
2772 thr->cvcache = newHV();
2773 thr->threadsv = newAV();
2774 /* thr->threadsvp is set when find_threadsv is called */
2775 thr->specific = newAV();
2776 thr->errhv = newHV();
2777 thr->flags = THRf_R_JOINABLE;
2778 MUTEX_INIT(&thr->mutex);
2779 /* Handcraft thrsv similarly to mess_sv */
2780 New(53, PL_thrsv, 1, SV);
2781 Newz(53, xpv, 1, XPV);
2782 SvFLAGS(PL_thrsv) = SVt_PV;
2783 SvANY(PL_thrsv) = (void*)xpv;
2784 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
2785 SvPVX(PL_thrsv) = (char*)thr;
2786 SvCUR_set(PL_thrsv, sizeof(thr));
2787 SvLEN_set(PL_thrsv, sizeof(thr));
2788 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
2789 thr->oursv = PL_thrsv;
2790 PL_chopset = " \n-";
2792 MUTEX_LOCK(&PL_threads_mutex);
2797 MUTEX_UNLOCK(&PL_threads_mutex);
2799 #ifdef HAVE_THREAD_INTERN
2800 init_thread_intern(thr);
2803 #ifdef SET_THREAD_SELF
2804 SET_THREAD_SELF(thr);
2806 thr->self = pthread_self();
2807 #endif /* SET_THREAD_SELF */
2811 * These must come after the SET_THR because sv_setpvn does
2812 * SvTAINT and the taint fields require dTHR.
2814 PL_toptarget = NEWSV(0,0);
2815 sv_upgrade(PL_toptarget, SVt_PVFM);
2816 sv_setpvn(PL_toptarget, "", 0);
2817 PL_bodytarget = NEWSV(0,0);
2818 sv_upgrade(PL_bodytarget, SVt_PVFM);
2819 sv_setpvn(PL_bodytarget, "", 0);
2820 PL_formtarget = PL_bodytarget;
2821 thr->errsv = newSVpv("", 0);
2822 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
2825 PL_regcompp = FUNC_NAME_TO_PTR(pregcomp);
2826 PL_regexecp = FUNC_NAME_TO_PTR(regexec_flags);
2828 PL_reginterp_cnt = 0;
2832 #endif /* USE_THREADS */
2835 call_list(I32 oldscope, AV *paramList)
2838 line_t oldline = PL_curcop->cop_line;
2843 while (AvFILL(paramList) >= 0) {
2844 CV *cv = (CV*)av_shift(paramList);
2852 PUSHMARK(PL_stack_sp);
2853 perl_call_sv((SV*)cv, G_EVAL|G_DISCARD);
2854 (void)SvPV(atsv, len);
2857 PL_curcop = &PL_compiling;
2858 PL_curcop->cop_line = oldline;
2859 if (paramList == PL_beginav)
2860 sv_catpv(atsv, "BEGIN failed--compilation aborted");
2862 sv_catpv(atsv, "END failed--cleanup aborted");
2863 while (PL_scopestack_ix > oldscope)
2865 croak("%s", SvPVX(atsv));
2873 /* my_exit() was called */
2874 while (PL_scopestack_ix > oldscope)
2877 PL_curstash = PL_defstash;
2879 call_list(oldscope, PL_endav);
2881 PL_curcop = &PL_compiling;
2882 PL_curcop->cop_line = oldline;
2883 if (PL_statusvalue) {
2884 if (paramList == PL_beginav)
2885 croak("BEGIN failed--compilation aborted");
2887 croak("END failed--cleanup aborted");
2892 if (!PL_restartop) {
2893 PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
2898 PL_curcop = &PL_compiling;
2899 PL_curcop->cop_line = oldline;
2911 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
2912 thr, (unsigned long) status));
2921 STATUS_NATIVE_SET(status);
2928 my_failure_exit(void)
2931 if (vaxc$errno & 1) {
2932 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
2933 STATUS_NATIVE_SET(44);
2936 if (!vaxc$errno && errno) /* unlikely */
2937 STATUS_NATIVE_SET(44);
2939 STATUS_NATIVE_SET(vaxc$errno);
2944 STATUS_POSIX_SET(errno);
2946 exitstatus = STATUS_POSIX >> 8;
2947 if (exitstatus & 255)
2948 STATUS_POSIX_SET(exitstatus);
2950 STATUS_POSIX_SET(255);
2960 register PERL_CONTEXT *cx;
2965 SvREFCNT_dec(PL_e_script);
2966 PL_e_script = Nullsv;
2969 POPSTACK_TO(PL_mainstack);
2970 if (cxstack_ix >= 0) {
2973 POPBLOCK(cx,PL_curpm);
2982 #endif /* PERL_OBJECT */
2988 read_e_script(CPerlObj *pPerl, int idx, SV *buf_sv, int maxlen)
2990 read_e_script(int idx, SV *buf_sv, int maxlen)
2994 p = SvPVX(PL_e_script);
2995 nl = strchr(p, '\n');
2996 nl = (nl) ? nl+1 : SvEND(PL_e_script);
2998 filter_del(read_e_script);
3001 sv_catpvn(buf_sv, p, nl-p);
3002 sv_chop(PL_e_script, nl);