3 * Copyright (c) 1987-1998 Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
17 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
22 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
23 char *getenv _((char *)); /* Usually in <stdlib.h> */
39 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
46 static I32 read_e_script _((CPerlObj* pPerl, int idx, SV *buf_sv, int maxlen));
48 static void find_beginning _((void));
49 static void forbid_setid _((char *));
50 static void incpush _((char *, int));
51 static void init_interp _((void));
52 static void init_ids _((void));
53 static void init_debugger _((void));
54 static void init_lexer _((void));
55 static void init_main_stash _((void));
57 static struct perl_thread * init_main_thread _((void));
58 #endif /* USE_THREADS */
59 static void init_perllib _((void));
60 static void init_postdump_symbols _((int, char **, char **));
61 static void init_predump_symbols _((void));
62 static void my_exit_jump _((void)) __attribute__((noreturn));
63 static void nuke_stacks _((void));
64 static void open_script _((char *, bool, SV *, int *fd));
65 static void usage _((char *));
67 static int fd_on_nosuid_fs _((int));
69 static void validate_suid _((char *, char*, int));
70 static I32 read_e_script _((int idx, SV *buf_sv, int maxlen));
74 CPerlObj* perl_alloc(IPerlMem* ipM, IPerlEnv* ipE, IPerlStdIO* ipStd,
75 IPerlLIO* ipLIO, IPerlDir* ipD, IPerlSock* ipS, IPerlProc* ipP)
77 CPerlObj* pPerl = new(ipM) CPerlObj(ipM, ipE, ipStd, ipLIO, ipD, ipS, ipP);
87 PerlInterpreter *sv_interp;
90 New(53, sv_interp, 1, PerlInterpreter);
93 #endif /* PERL_OBJECT */
99 perl_construct(register PerlInterpreter *sv_interp)
105 struct perl_thread *thr;
106 #endif /* FAKE_THREADS */
107 #endif /* USE_THREADS */
110 if (!(PL_curinterp = sv_interp))
116 Zero(sv_interp, 1, PerlInterpreter);
119 /* Init the real globals (and main thread)? */
124 #ifdef ALLOC_THREAD_KEY
127 if (pthread_key_create(&PL_thr_key, 0))
128 croak("panic: pthread_key_create");
130 MUTEX_INIT(&PL_sv_mutex);
132 * Safe to use basic SV functions from now on (though
133 * not things like mortals or tainting yet).
135 MUTEX_INIT(&PL_eval_mutex);
136 COND_INIT(&PL_eval_cond);
137 MUTEX_INIT(&PL_threads_mutex);
138 COND_INIT(&PL_nthreads_cond);
139 #ifdef EMULATE_ATOMIC_REFCOUNTS
140 MUTEX_INIT(&PL_svref_mutex);
141 #endif /* EMULATE_ATOMIC_REFCOUNTS */
143 MUTEX_INIT(&PL_cred_mutex);
145 thr = init_main_thread();
146 #endif /* USE_THREADS */
148 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
150 PL_linestr = NEWSV(65,79);
151 sv_upgrade(PL_linestr,SVt_PVIV);
153 if (!SvREADONLY(&PL_sv_undef)) {
154 /* set read-only and try to insure than we wont see REFCNT==0
157 SvREADONLY_on(&PL_sv_undef);
158 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
160 sv_setpv(&PL_sv_no,PL_No);
162 SvREADONLY_on(&PL_sv_no);
163 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
165 sv_setpv(&PL_sv_yes,PL_Yes);
167 SvREADONLY_on(&PL_sv_yes);
168 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
173 /* PL_sighandlerp = sighandler; */
175 PL_sighandlerp = sighandler;
177 PL_pidstatus = newHV();
181 * There is no way we can refer to them from Perl so close them to save
182 * space. The other alternative would be to provide STDAUX and STDPRN
185 (void)fclose(stdaux);
186 (void)fclose(stdprn);
190 PL_nrs = newSVpv("\n", 1);
191 PL_rs = SvREFCNT_inc(PL_nrs);
196 PL_perl_destruct_level = 1;
198 if (PL_perl_destruct_level > 0)
203 PL_lex_state = LEX_NOTPARSING;
205 PL_start_env.je_prev = NULL;
206 PL_start_env.je_ret = -1;
207 PL_start_env.je_mustcatch = TRUE;
208 PL_top_env = &PL_start_env;
211 SET_NUMERIC_STANDARD();
212 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
213 sprintf(PL_patchlevel, "%7.5f", (double) PERL_REVISION
214 + ((double) PERL_VERSION / (double) 1000)
215 + ((double) PERL_SUBVERSION / (double) 100000));
217 sprintf(PL_patchlevel, "%5.3f", (double) PERL_REVISION +
218 ((double) PERL_VERSION / (double) 1000));
221 #if defined(LOCAL_PATCH_COUNT)
222 PL_localpatches = local_patches; /* For possible -v */
225 PerlIO_init(); /* Hook to IO system */
227 PL_fdpid = newAV(); /* for remembering popen pids by fd */
228 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
231 New(51,PL_debname,128,char);
232 New(52,PL_debdelim,128,char);
242 perl_destruct(register PerlInterpreter *sv_interp)
246 int destruct_level; /* 0=none, 1=full, 2=full with checks */
251 #endif /* USE_THREADS */
254 if (!(PL_curinterp = sv_interp))
260 /* Pass 1 on any remaining threads: detach joinables, join zombies */
262 MUTEX_LOCK(&PL_threads_mutex);
263 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
264 "perl_destruct: waiting for %d threads...\n",
266 for (t = thr->next; t != thr; t = t->next) {
267 MUTEX_LOCK(&t->mutex);
268 switch (ThrSTATE(t)) {
271 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
272 "perl_destruct: joining zombie %p\n", t));
273 ThrSETSTATE(t, THRf_DEAD);
274 MUTEX_UNLOCK(&t->mutex);
277 * The SvREFCNT_dec below may take a long time (e.g. av
278 * may contain an object scalar whose destructor gets
279 * called) so we have to unlock threads_mutex and start
282 MUTEX_UNLOCK(&PL_threads_mutex);
284 SvREFCNT_dec((SV*)av);
285 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
286 "perl_destruct: joined zombie %p OK\n", t));
288 case THRf_R_JOINABLE:
289 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
290 "perl_destruct: detaching thread %p\n", t));
291 ThrSETSTATE(t, THRf_R_DETACHED);
293 * We unlock threads_mutex and t->mutex in the opposite order
294 * from which we locked them just so that DETACH won't
295 * deadlock if it panics. It's only a breach of good style
296 * not a bug since they are unlocks not locks.
298 MUTEX_UNLOCK(&PL_threads_mutex);
300 MUTEX_UNLOCK(&t->mutex);
303 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
304 "perl_destruct: ignoring %p (state %u)\n",
306 MUTEX_UNLOCK(&t->mutex);
307 /* fall through and out */
310 /* We leave the above "Pass 1" loop with threads_mutex still locked */
312 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
313 while (PL_nthreads > 1)
315 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
316 "perl_destruct: final wait for %d threads\n",
318 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
320 /* At this point, we're the last thread */
321 MUTEX_UNLOCK(&PL_threads_mutex);
322 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "perl_destruct: armageddon has arrived\n"));
323 MUTEX_DESTROY(&PL_threads_mutex);
324 COND_DESTROY(&PL_nthreads_cond);
325 #endif /* !defined(FAKE_THREADS) */
326 #endif /* USE_THREADS */
328 destruct_level = PL_perl_destruct_level;
332 if (s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL")) {
334 if (destruct_level < i)
347 /* We must account for everything. */
349 /* Destroy the main CV and syntax tree */
351 PL_curpad = AvARRAY(PL_comppad);
352 op_free(PL_main_root);
353 PL_main_root = Nullop;
355 PL_curcop = &PL_compiling;
356 PL_main_start = Nullop;
357 SvREFCNT_dec(PL_main_cv);
361 if (PL_sv_objcount) {
363 * Try to destruct global references. We do this first so that the
364 * destructors and destructees still exist. Some sv's might remain.
365 * Non-referenced objects are on their own.
370 /* unhook hooks which will soon be, or use, destroyed data */
371 SvREFCNT_dec(PL_warnhook);
372 PL_warnhook = Nullsv;
373 SvREFCNT_dec(PL_diehook);
375 SvREFCNT_dec(PL_parsehook);
376 PL_parsehook = Nullsv;
378 /* call exit list functions */
379 while (PL_exitlistlen-- > 0)
380 PL_exitlist[PL_exitlistlen].fn(PERL_OBJECT_THIS_ PL_exitlist[PL_exitlistlen].ptr);
382 Safefree(PL_exitlist);
384 if (destruct_level == 0){
386 DEBUG_P(debprofdump());
388 /* The exit() function will do everything that needs doing. */
392 /* loosen bonds of global variables */
395 (void)PerlIO_close(PL_rsfp);
399 /* Filters for program text */
400 SvREFCNT_dec(PL_rsfp_filters);
401 PL_rsfp_filters = Nullav;
404 PL_preprocess = FALSE;
410 PL_doswitches = FALSE;
411 PL_dowarn = G_WARN_OFF;
412 PL_doextract = FALSE;
413 PL_sawampersand = FALSE; /* must save all match strings */
414 PL_sawstudy = FALSE; /* do fbm_instr on all strings */
418 Safefree(PL_inplace);
422 SvREFCNT_dec(PL_e_script);
423 PL_e_script = Nullsv;
426 /* magical thingies */
428 Safefree(PL_ofs); /* $, */
431 Safefree(PL_ors); /* $\ */
434 SvREFCNT_dec(PL_rs); /* $/ */
437 SvREFCNT_dec(PL_nrs); /* $/ helper */
440 PL_multiline = 0; /* $* */
442 SvREFCNT_dec(PL_statname);
443 PL_statname = Nullsv;
446 /* defgv, aka *_ should be taken care of elsewhere */
448 /* clean up after study() */
449 SvREFCNT_dec(PL_lastscream);
450 PL_lastscream = Nullsv;
451 Safefree(PL_screamfirst);
453 Safefree(PL_screamnext);
456 /* startup and shutdown function lists */
457 SvREFCNT_dec(PL_beginav);
458 SvREFCNT_dec(PL_endav);
459 SvREFCNT_dec(PL_initav);
464 /* shortcuts just get cleared */
471 PL_argvoutgv = Nullgv;
473 PL_last_in_gv = Nullgv;
476 /* reset so print() ends up where we expect */
479 /* Prepare to destruct main symbol table. */
486 if (destruct_level >= 2) {
487 if (PL_scopestack_ix != 0)
488 warn("Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
489 (long)PL_scopestack_ix);
490 if (PL_savestack_ix != 0)
491 warn("Unbalanced saves: %ld more saves than restores\n",
492 (long)PL_savestack_ix);
493 if (PL_tmps_floor != -1)
494 warn("Unbalanced tmps: %ld more allocs than frees\n",
495 (long)PL_tmps_floor + 1);
496 if (cxstack_ix != -1)
497 warn("Unbalanced context: %ld more PUSHes than POPs\n",
498 (long)cxstack_ix + 1);
501 /* Now absolutely destruct everything, somehow or other, loops or no. */
503 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
504 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
505 last_sv_count = PL_sv_count;
508 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
509 SvFLAGS(PL_strtab) |= SVt_PVHV;
511 /* Destruct the global string table. */
513 /* Yell and reset the HeVAL() slots that are still holding refcounts,
514 * so that sv_free() won't fail on them.
522 max = HvMAX(PL_strtab);
523 array = HvARRAY(PL_strtab);
527 warn("Unbalanced string table refcount: (%d) for \"%s\"",
528 HeVAL(hent) - Nullsv, HeKEY(hent));
529 HeVAL(hent) = Nullsv;
539 SvREFCNT_dec(PL_strtab);
541 if (PL_sv_count != 0)
542 warn("Scalars leaked: %ld\n", (long)PL_sv_count);
546 /* No SVs have survived, need to clean out */
548 PL_pidstatus = Nullhv;
549 Safefree(PL_origfilename);
550 Safefree(PL_archpat_auto);
551 Safefree(PL_reg_start_tmp);
553 Safefree(PL_reg_curpm);
554 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
555 Safefree(PL_op_mask);
557 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
559 DEBUG_P(debprofdump());
561 MUTEX_DESTROY(&PL_strtab_mutex);
562 MUTEX_DESTROY(&PL_sv_mutex);
563 MUTEX_DESTROY(&PL_eval_mutex);
564 MUTEX_DESTROY(&PL_cred_mutex);
565 COND_DESTROY(&PL_eval_cond);
567 /* As the penultimate thing, free the non-arena SV for thrsv */
568 Safefree(SvPVX(PL_thrsv));
569 Safefree(SvANY(PL_thrsv));
572 #endif /* USE_THREADS */
574 /* As the absolutely last thing, free the non-arena SV for mess() */
577 /* it could have accumulated taint magic */
578 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
581 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
582 moremagic = mg->mg_moremagic;
583 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
584 Safefree(mg->mg_ptr);
588 /* we know that type >= SVt_PV */
589 SvOOK_off(PL_mess_sv);
590 Safefree(SvPVX(PL_mess_sv));
591 Safefree(SvANY(PL_mess_sv));
592 Safefree(PL_mess_sv);
601 perl_free(PerlInterpreter *sv_interp)
607 if (!(PL_curinterp = sv_interp))
615 perl_atexit(void (*fn) (CPerlObj*,void *), void *ptr)
617 perl_atexit(void (*fn) (void *), void *ptr)
620 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
621 PL_exitlist[PL_exitlistlen].fn = fn;
622 PL_exitlist[PL_exitlistlen].ptr = ptr;
628 perl_parse(void (*xsinit) (CPerlObj*), int argc, char **argv, char **env)
630 perl_parse(PerlInterpreter *sv_interp, void (*xsinit) (void), int argc, char **argv, char **env)
636 char *scriptname = NULL;
637 VOL bool dosearch = FALSE;
645 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
648 croak("suidperl is no longer needed since the kernel can now execute\n\
649 setuid perl scripts securely.\n");
654 if (!(PL_curinterp = sv_interp))
658 #if defined(NeXT) && defined(__DYNAMIC__)
659 _dyld_lookup_and_bind
660 ("__environ", (unsigned long *) &environ_pointer, NULL);
665 #ifndef VMS /* VMS doesn't have environ array */
666 PL_origenviron = environ;
671 /* Come here if running an undumped a.out. */
673 PL_origfilename = savepv(argv[0]);
674 PL_do_undump = FALSE;
675 cxstack_ix = -1; /* start label stack again */
677 init_postdump_symbols(argc,argv,env);
682 PL_curpad = AvARRAY(PL_comppad);
683 op_free(PL_main_root);
684 PL_main_root = Nullop;
686 PL_main_start = Nullop;
687 SvREFCNT_dec(PL_main_cv);
691 oldscope = PL_scopestack_ix;
692 PL_dowarn = G_WARN_OFF;
700 /* my_exit() was called */
701 while (PL_scopestack_ix > oldscope)
704 PL_curstash = PL_defstash;
706 call_list(oldscope, PL_endav);
708 return STATUS_NATIVE_EXPORT;
711 PerlIO_printf(PerlIO_stderr(), "panic: top_env\n");
715 sv_setpvn(PL_linestr,"",0);
716 sv = newSVpv("",0); /* first used for -I flags */
720 for (argc--,argv++; argc > 0; argc--,argv++) {
721 if (argv[0][0] != '-' || !argv[0][1])
725 validarg = " PHOOEY ";
753 if (s = moreswitches(s))
763 if (PL_euid != PL_uid || PL_egid != PL_gid)
764 croak("No -e allowed in setuid scripts");
766 PL_e_script = newSVpv("",0);
767 filter_add(read_e_script, NULL);
770 sv_catpv(PL_e_script, s);
772 sv_catpv(PL_e_script, argv[1]);
776 croak("No code specified for -e");
777 sv_catpv(PL_e_script, "\n");
780 case 'I': /* -I handled both here and in moreswitches() */
782 if (!*++s && (s=argv[1]) != Nullch) {
785 while (s && isSPACE(*s))
789 for (e = s; *e && !isSPACE(*e); e++) ;
796 } /* XXX else croak? */
800 PL_preprocess = TRUE;
810 PL_preambleav = newAV();
811 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
813 PL_Sv = newSVpv("print myconfig();",0);
815 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
817 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
819 #if defined(DEBUGGING) || defined(MULTIPLICITY)
820 sv_catpv(PL_Sv,"\" Compile-time options:");
822 sv_catpv(PL_Sv," DEBUGGING");
825 sv_catpv(PL_Sv," MULTIPLICITY");
827 sv_catpv(PL_Sv,"\\n\",");
829 #if defined(LOCAL_PATCH_COUNT)
830 if (LOCAL_PATCH_COUNT > 0) {
832 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
833 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
834 if (PL_localpatches[i])
835 sv_catpvf(PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
839 sv_catpvf(PL_Sv,"\" Built under %s\\n\"",OSNAME);
842 sv_catpvf(PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
844 sv_catpvf(PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
849 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
850 print \" \\%ENV:\\n @env\\n\" if @env; \
851 print \" \\@INC:\\n @INC\\n\";");
854 PL_Sv = newSVpv("config_vars(qw(",0);
855 sv_catpv(PL_Sv, ++s);
856 sv_catpv(PL_Sv, "))");
859 av_push(PL_preambleav, PL_Sv);
860 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
866 PL_cddir = savepv(s);
871 if (!*++s || isSPACE(*s)) {
875 /* catch use of gnu style long options */
876 if (strEQ(s, "version")) {
880 if (strEQ(s, "help")) {
887 croak("Unrecognized switch: -%s (-h will show valid options)",s);
892 if (!PL_tainting && (s = PerlEnv_getenv("PERL5OPT"))) {
895 if (*s == '-' && *(s+1) == 'T')
908 if (!strchr("DIMUdmw", *s))
909 croak("Illegal switch in PERL5OPT: -%c", *s);
916 scriptname = argv[0];
919 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
921 else if (scriptname == Nullch) {
923 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
931 open_script(scriptname,dosearch,sv,&fdscript);
933 validate_suid(validarg, scriptname,fdscript);
938 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
939 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
940 CvUNIQUE_on(PL_compcv);
942 PL_comppad = newAV();
943 av_push(PL_comppad, Nullsv);
944 PL_curpad = AvARRAY(PL_comppad);
945 PL_comppad_name = newAV();
946 PL_comppad_name_fill = 0;
947 PL_min_intro_pending = 0;
950 av_store(PL_comppad_name, 0, newSVpv("@_", 2));
951 PL_curpad[0] = (SV*)newAV();
952 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
953 CvOWNER(PL_compcv) = 0;
954 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
955 MUTEX_INIT(CvMUTEXP(PL_compcv));
956 #endif /* USE_THREADS */
958 comppadlist = newAV();
959 AvREAL_off(comppadlist);
960 av_store(comppadlist, 0, (SV*)PL_comppad_name);
961 av_store(comppadlist, 1, (SV*)PL_comppad);
962 CvPADLIST(PL_compcv) = comppadlist;
964 boot_core_UNIVERSAL();
967 (*xsinit)(PERL_OBJECT_THIS); /* in case linked C routines want magical variables */
968 #if defined(VMS) || defined(WIN32) || defined(DJGPP)
972 init_predump_symbols();
973 /* init_postdump_symbols not currently designed to be called */
974 /* more than once (ENV isn't cleared first, for example) */
975 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
977 init_postdump_symbols(argc,argv,env);
981 /* now parse the script */
983 SETERRNO(0,SS$_NORMAL);
985 if (yyparse() || PL_error_count) {
987 croak("%s had compilation errors.\n", PL_origfilename);
989 croak("Execution of %s aborted due to compilation errors.\n",
993 PL_curcop->cop_line = 0;
994 PL_curstash = PL_defstash;
995 PL_preprocess = FALSE;
997 SvREFCNT_dec(PL_e_script);
998 PL_e_script = Nullsv;
1001 /* now that script is parsed, we can modify record separator */
1002 SvREFCNT_dec(PL_rs);
1003 PL_rs = SvREFCNT_inc(PL_nrs);
1004 sv_setsv(perl_get_sv("/", TRUE), PL_rs);
1008 if (ckWARN(WARN_ONCE))
1009 gv_check(PL_defstash);
1015 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1016 dump_mstats("after compilation:");
1029 perl_run(PerlInterpreter *sv_interp)
1038 if (!(PL_curinterp = sv_interp))
1042 oldscope = PL_scopestack_ix;
1047 cxstack_ix = -1; /* start context stack again */
1050 /* my_exit() was called */
1051 while (PL_scopestack_ix > oldscope)
1054 PL_curstash = PL_defstash;
1056 call_list(oldscope, PL_endav);
1058 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1059 dump_mstats("after execution: ");
1062 return STATUS_NATIVE_EXPORT;
1064 if (!PL_restartop) {
1065 PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
1070 POPSTACK_TO(PL_mainstack);
1074 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1075 PL_sawampersand ? "Enabling" : "Omitting"));
1077 if (!PL_restartop) {
1078 DEBUG_x(dump_all());
1079 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1080 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%lx\n",
1081 (unsigned long) thr));
1084 PerlIO_printf(PerlIO_stderr(), "%s syntax OK\n", PL_origfilename);
1087 if (PERLDB_SINGLE && PL_DBsingle)
1088 sv_setiv(PL_DBsingle, 1);
1090 call_list(oldscope, PL_initav);
1096 PL_op = PL_restartop;
1100 else if (PL_main_start) {
1101 CvDEPTH(PL_main_cv) = 1;
1102 PL_op = PL_main_start;
1112 perl_get_sv(const char *name, I32 create)
1116 if (name[1] == '\0' && !isALPHA(name[0])) {
1117 PADOFFSET tmp = find_threadsv(name);
1118 if (tmp != NOT_IN_PAD) {
1120 return THREADSV(tmp);
1123 #endif /* USE_THREADS */
1124 gv = gv_fetchpv(name, create, SVt_PV);
1131 perl_get_av(const char *name, I32 create)
1133 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1142 perl_get_hv(const char *name, I32 create)
1144 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1153 perl_get_cv(const char *name, I32 create)
1155 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1156 /* XXX unsafe for threads if eval_owner isn't held */
1157 if (create && !GvCVu(gv))
1158 return newSUB(start_subparse(FALSE, 0),
1159 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1167 /* Be sure to refetch the stack pointer after calling these routines. */
1170 perl_call_argv(const char *sub_name, I32 flags, register char **argv)
1172 /* See G_* flags in cop.h */
1173 /* null terminated arg list */
1180 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1185 return perl_call_pv(sub_name, flags);
1189 perl_call_pv(const char *sub_name, I32 flags)
1190 /* name of the subroutine */
1191 /* See G_* flags in cop.h */
1193 return perl_call_sv((SV*)perl_get_cv(sub_name, TRUE), flags);
1197 perl_call_method(const char *methname, I32 flags)
1198 /* name of the subroutine */
1199 /* See G_* flags in cop.h */
1205 XPUSHs(sv_2mortal(newSVpv(methname,0)));
1210 return perl_call_sv(*PL_stack_sp--, flags);
1213 /* May be called with any of a CV, a GV, or an SV containing the name. */
1215 perl_call_sv(SV *sv, I32 flags)
1217 /* See G_* flags in cop.h */
1220 LOGOP myop; /* fake syntax tree node */
1224 bool oldcatch = CATCH_GET;
1229 if (flags & G_DISCARD) {
1234 Zero(&myop, 1, LOGOP);
1235 myop.op_next = Nullop;
1236 if (!(flags & G_NOARGS))
1237 myop.op_flags |= OPf_STACKED;
1238 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1239 (flags & G_ARRAY) ? OPf_WANT_LIST :
1244 EXTEND(PL_stack_sp, 1);
1245 *++PL_stack_sp = sv;
1247 oldscope = PL_scopestack_ix;
1249 if (PERLDB_SUB && PL_curstash != PL_debstash
1250 /* Handle first BEGIN of -d. */
1251 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1252 /* Try harder, since this may have been a sighandler, thus
1253 * curstash may be meaningless. */
1254 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1255 && !(flags & G_NODEBUG))
1256 PL_op->op_private |= OPpENTERSUB_DB;
1258 if (flags & G_EVAL) {
1259 cLOGOP->op_other = PL_op;
1261 /* we're trying to emulate pp_entertry() here */
1263 register PERL_CONTEXT *cx;
1264 I32 gimme = GIMME_V;
1269 push_return(PL_op->op_next);
1270 PUSHBLOCK(cx, CXt_EVAL, PL_stack_sp);
1272 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1275 if (flags & G_KEEPERR)
1290 /* my_exit() was called */
1291 PL_curstash = PL_defstash;
1295 croak("Callback called exit");
1300 PL_op = PL_restartop;
1304 PL_stack_sp = PL_stack_base + oldmark;
1305 if (flags & G_ARRAY)
1309 *++PL_stack_sp = &PL_sv_undef;
1317 if (PL_op == (OP*)&myop)
1318 PL_op = pp_entersub(ARGS);
1321 retval = PL_stack_sp - (PL_stack_base + oldmark);
1322 if ((flags & G_EVAL) && !(flags & G_KEEPERR))
1326 if (flags & G_EVAL) {
1327 if (PL_scopestack_ix > oldscope) {
1331 register PERL_CONTEXT *cx;
1343 CATCH_SET(oldcatch);
1345 if (flags & G_DISCARD) {
1346 PL_stack_sp = PL_stack_base + oldmark;
1355 /* Eval a string. The G_EVAL flag is always assumed. */
1358 perl_eval_sv(SV *sv, I32 flags)
1360 /* See G_* flags in cop.h */
1363 UNOP myop; /* fake syntax tree node */
1364 I32 oldmark = SP - PL_stack_base;
1371 if (flags & G_DISCARD) {
1378 Zero(PL_op, 1, UNOP);
1379 EXTEND(PL_stack_sp, 1);
1380 *++PL_stack_sp = sv;
1381 oldscope = PL_scopestack_ix;
1383 if (!(flags & G_NOARGS))
1384 myop.op_flags = OPf_STACKED;
1385 myop.op_next = Nullop;
1386 myop.op_type = OP_ENTEREVAL;
1387 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1388 (flags & G_ARRAY) ? OPf_WANT_LIST :
1390 if (flags & G_KEEPERR)
1391 myop.op_flags |= OPf_SPECIAL;
1401 /* my_exit() was called */
1402 PL_curstash = PL_defstash;
1406 croak("Callback called exit");
1411 PL_op = PL_restartop;
1415 PL_stack_sp = PL_stack_base + oldmark;
1416 if (flags & G_ARRAY)
1420 *++PL_stack_sp = &PL_sv_undef;
1425 if (PL_op == (OP*)&myop)
1426 PL_op = pp_entereval(ARGS);
1429 retval = PL_stack_sp - (PL_stack_base + oldmark);
1430 if (!(flags & G_KEEPERR))
1435 if (flags & G_DISCARD) {
1436 PL_stack_sp = PL_stack_base + oldmark;
1446 perl_eval_pv(const char *p, I32 croak_on_error)
1449 SV* sv = newSVpv(p, 0);
1452 perl_eval_sv(sv, G_SCALAR);
1459 if (croak_on_error && SvTRUE(ERRSV)) {
1461 croak(SvPVx(ERRSV, n_a));
1467 /* Require a module. */
1470 perl_require_pv(const char *pv)
1474 PUSHSTACKi(PERLSI_REQUIRE);
1476 sv = sv_newmortal();
1477 sv_setpv(sv, "require '");
1480 perl_eval_sv(sv, G_DISCARD);
1486 magicname(char *sym, char *name, I32 namlen)
1490 if (gv = gv_fetchpv(sym,TRUE, SVt_PV))
1491 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1495 usage(char *name) /* XXX move this out into a module ? */
1498 /* This message really ought to be max 23 lines.
1499 * Removed -h because the user already knows that opton. Others? */
1501 static char *usage_msg[] = {
1502 "-0[octal] specify record separator (\\0, if no argument)",
1503 "-a autosplit mode with -n or -p (splits $_ into @F)",
1504 "-c check syntax only (runs BEGIN and END blocks)",
1505 "-d[:debugger] run scripts under debugger",
1506 "-D[number/list] set debugging flags (argument is a bit mask or flags)",
1507 "-e 'command' one line of script. Several -e's allowed. Omit [programfile].",
1508 "-F/pattern/ split() pattern for autosplit (-a). The //'s are optional.",
1509 "-i[extension] edit <> files in place (make backup if extension supplied)",
1510 "-Idirectory specify @INC/#include directory (may be used more than once)",
1511 "-l[octal] enable line ending processing, specifies line terminator",
1512 "-[mM][-]module.. executes `use/no module...' before executing your script.",
1513 "-n assume 'while (<>) { ... }' loop around your script",
1514 "-p assume loop like -n but print line also like sed",
1515 "-P run script through C preprocessor before compilation",
1516 "-s enable some switch parsing for switches after script name",
1517 "-S look for the script using PATH environment variable",
1518 "-T turn on tainting checks",
1519 "-u dump core after parsing script",
1520 "-U allow unsafe operations",
1521 "-v print version number, patchlevel plus VERY IMPORTANT perl info",
1522 "-V[:variable] print perl configuration information",
1523 "-w TURN WARNINGS ON FOR COMPILATION OF YOUR SCRIPT. Recommended.",
1524 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
1528 char **p = usage_msg;
1530 printf("\nUsage: %s [switches] [--] [programfile] [arguments]", name);
1532 printf("\n %s", *p++);
1535 /* This routine handles any switches that can be given during run */
1538 moreswitches(char *s)
1547 rschar = scan_oct(s, 4, &numlen);
1548 SvREFCNT_dec(PL_nrs);
1549 if (rschar & ~((U8)~0))
1550 PL_nrs = &PL_sv_undef;
1551 else if (!rschar && numlen >= 2)
1552 PL_nrs = newSVpv("", 0);
1555 PL_nrs = newSVpv(&ch, 1);
1561 PL_splitstr = savepv(s + 1);
1575 if (*s == ':' || *s == '=') {
1576 my_setenv("PERL5DB", form("use Devel::%s;", ++s));
1580 PL_perldb = PERLDB_ALL;
1587 if (isALPHA(s[1])) {
1588 static char debopts[] = "psltocPmfrxuLHXDS";
1591 for (s++; *s && (d = strchr(debopts,*s)); s++)
1592 PL_debug |= 1 << (d - debopts);
1595 PL_debug = atoi(s+1);
1596 for (s++; isDIGIT(*s); s++) ;
1598 PL_debug |= 0x80000000;
1600 warn("Recompile perl with -DDEBUGGING to use -D switch\n");
1601 for (s++; isALNUM(*s); s++) ;
1606 usage(PL_origargv[0]);
1610 Safefree(PL_inplace);
1611 PL_inplace = savepv(s+1);
1613 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
1616 if (*s == '-') /* Additional switches on #! line. */
1620 case 'I': /* -I handled both here and in parse_perl() */
1623 while (*s && isSPACE(*s))
1627 for (e = s; *e && !isSPACE(*e); e++) ;
1628 p = savepvn(s, e-s);
1634 croak("No space allowed after -I");
1642 PL_ors = savepv("\n");
1644 *PL_ors = scan_oct(s, 3 + (*s == '0'), &numlen);
1649 if (RsPARA(PL_nrs)) {
1654 PL_ors = SvPV(PL_nrs, PL_orslen);
1655 PL_ors = savepvn(PL_ors, PL_orslen);
1659 forbid_setid("-M"); /* XXX ? */
1662 forbid_setid("-m"); /* XXX ? */
1667 /* -M-foo == 'no foo' */
1668 if (*s == '-') { use = "no "; ++s; }
1669 sv = newSVpv(use,0);
1671 /* We allow -M'Module qw(Foo Bar)' */
1672 while(isALNUM(*s) || *s==':') ++s;
1674 sv_catpv(sv, start);
1675 if (*(start-1) == 'm') {
1677 croak("Can't use '%c' after -mname", *s);
1678 sv_catpv( sv, " ()");
1681 sv_catpvn(sv, start, s-start);
1682 sv_catpv(sv, " split(/,/,q{");
1687 if (PL_preambleav == NULL)
1688 PL_preambleav = newAV();
1689 av_push(PL_preambleav, sv);
1692 croak("No space allowed after -%c", *(s-1));
1704 PL_doswitches = TRUE;
1709 croak("Too late for \"-T\" option");
1713 PL_do_undump = TRUE;
1721 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
1722 printf("\nThis is perl, version %d.%03d_%02d built for %s",
1723 PERL_REVISION, PERL_VERSION, PERL_SUBVERSION, ARCHNAME);
1725 printf("\nThis is perl, version %s built for %s",
1726 PL_patchlevel, ARCHNAME);
1728 #if defined(LOCAL_PATCH_COUNT)
1729 if (LOCAL_PATCH_COUNT > 0)
1730 printf("\n(with %d registered patch%s, see perl -V for more detail)",
1731 LOCAL_PATCH_COUNT, (LOCAL_PATCH_COUNT!=1) ? "es" : "");
1734 printf("\n\nCopyright 1987-1998, Larry Wall\n");
1736 printf("\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
1739 printf("djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n");
1740 printf("djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1998\n");
1743 printf("\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
1744 "Version 5 port Copyright (c) 1994-1998, Andreas Kaiser, Ilya Zakharevich\n");
1747 printf("atariST series port, ++jrb bammi@cadence.com\n");
1750 printf("BeOS port Copyright Tom Spindler, 1997-1998\n");
1753 printf("MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1998\n");
1756 printf("MVS (OS390) port by Mortice Kern Systems, 1997-1998\n");
1759 printf("Stratus VOS port by Paul_Green@stratus.com, 1997-1998\n");
1762 printf("VM/ESA port by Neale Ferguson, 1998\n");
1765 printf("BS2000 (POSIX) port by Start Amadeus GmbH, 1998\n");
1768 printf("MiNT port by Guido Flohr, 1997\n");
1770 #ifdef BINARY_BUILD_NOTICE
1771 BINARY_BUILD_NOTICE;
1774 Perl may be copied only under the terms of either the Artistic License or the\n\
1775 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
1776 Complete documentation for Perl, including FAQ lists, should be found on\n\
1777 this system using `man perl' or `perldoc perl'. If you have access to the\n\
1778 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
1781 if (! (PL_dowarn & G_WARN_ALL_MASK))
1782 PL_dowarn |= G_WARN_ON;
1786 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
1787 PL_compiling.cop_warnings = WARN_ALL ;
1791 PL_dowarn = G_WARN_ALL_OFF;
1792 PL_compiling.cop_warnings = WARN_NONE ;
1797 if (s[1] == '-') /* Additional switches on #! line. */
1802 #if defined(WIN32) || !defined(PERL_STRICT_CR)
1808 #ifdef ALTERNATE_SHEBANG
1809 case 'S': /* OS/2 needs -S on "extproc" line. */
1817 croak("Can't emulate -%.1s on #! line",s);
1822 /* compliments of Tom Christiansen */
1824 /* unexec() can be found in the Gnu emacs distribution */
1825 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
1836 prog = newSVpv(BIN_EXP, 0);
1837 sv_catpv(prog, "/perl");
1838 file = newSVpv(PL_origfilename, 0);
1839 sv_catpv(file, ".perldump");
1841 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
1842 /* unexec prints msg to stderr in case of failure */
1843 PerlProc_exit(status);
1846 # include <lib$routines.h>
1847 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
1849 ABORT(); /* for use with undump */
1854 /* initialize curinterp */
1859 #ifdef PERL_OBJECT /* XXX kludge */
1862 PL_chopset = " \n-"; \
1863 PL_copline = NOLINE; \
1864 PL_curcop = &PL_compiling;\
1865 PL_curcopdb = NULL; \
1868 PL_dumpindent = 4; \
1869 PL_laststatval = -1; \
1870 PL_laststype = OP_STAT; \
1871 PL_maxscream = -1; \
1872 PL_maxsysfd = MAXSYSFD; \
1873 PL_statname = Nullsv; \
1874 PL_tmps_floor = -1; \
1876 PL_op_mask = NULL; \
1878 PL_laststatval = -1; \
1879 PL_laststype = OP_STAT; \
1880 PL_mess_sv = Nullsv; \
1881 PL_splitstr = " "; \
1882 PL_generation = 100; \
1883 PL_exitlist = NULL; \
1884 PL_exitlistlen = 0; \
1886 PL_in_clean_objs = FALSE; \
1887 PL_in_clean_all = FALSE; \
1888 PL_profiledata = NULL; \
1890 PL_rsfp_filters = Nullav; \
1895 # ifdef MULTIPLICITY
1896 # define PERLVAR(var,type)
1897 # define PERLVARI(var,type,init) PL_curinterp->var = init;
1898 # define PERLVARIC(var,type,init) PL_curinterp->var = init;
1899 # include "intrpvar.h"
1900 # ifndef USE_THREADS
1901 # include "thrdvar.h"
1907 # define PERLVAR(var,type)
1908 # define PERLVARI(var,type,init) PL_##var = init;
1909 # define PERLVARIC(var,type,init) PL_##var = init;
1910 # include "intrpvar.h"
1911 # ifndef USE_THREADS
1912 # include "thrdvar.h"
1923 init_main_stash(void)
1928 /* Note that strtab is a rather special HV. Assumptions are made
1929 about not iterating on it, and not adding tie magic to it.
1930 It is properly deallocated in perl_destruct() */
1931 PL_strtab = newHV();
1933 MUTEX_INIT(&PL_strtab_mutex);
1935 HvSHAREKEYS_off(PL_strtab); /* mandatory */
1936 hv_ksplit(PL_strtab, 512);
1938 PL_curstash = PL_defstash = newHV();
1939 PL_curstname = newSVpv("main",4);
1940 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
1941 SvREFCNT_dec(GvHV(gv));
1942 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
1944 HvNAME(PL_defstash) = savepv("main");
1945 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
1946 GvMULTI_on(PL_incgv);
1947 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
1948 GvMULTI_on(PL_hintgv);
1949 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
1950 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
1951 GvMULTI_on(PL_errgv);
1952 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
1953 GvMULTI_on(PL_replgv);
1954 (void)form("%240s",""); /* Preallocate temp - for immediate signals. */
1955 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
1956 sv_setpvn(ERRSV, "", 0);
1957 PL_curstash = PL_defstash;
1958 PL_compiling.cop_stash = PL_defstash;
1959 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
1960 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
1961 /* We must init $/ before switches are processed. */
1962 sv_setpvn(perl_get_sv("/", TRUE), "\n", 1);
1966 open_script(char *scriptname, bool dosearch, SV *sv, int *fdscript)
1974 PL_origfilename = savepv("-e");
1977 /* if find_script() returns, it returns a malloc()-ed value */
1978 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
1980 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
1981 char *s = scriptname + 8;
1982 *fdscript = atoi(s);
1986 scriptname = savepv(s + 1);
1987 Safefree(PL_origfilename);
1988 PL_origfilename = scriptname;
1993 PL_curcop->cop_filegv = gv_fetchfile(PL_origfilename);
1994 if (strEQ(PL_origfilename,"-"))
1996 if (*fdscript >= 0) {
1997 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
1998 #if defined(HAS_FCNTL) && defined(F_SETFD)
2000 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2003 else if (PL_preprocess) {
2004 char *cpp_cfg = CPPSTDIN;
2005 SV *cpp = newSVpv("",0);
2006 SV *cmd = NEWSV(0,0);
2008 if (strEQ(cpp_cfg, "cppstdin"))
2009 sv_catpvf(cpp, "%s/", BIN_EXP);
2010 sv_catpv(cpp, cpp_cfg);
2013 sv_catpv(sv,PRIVLIB_EXP);
2017 sed %s -e \"/^[^#]/b\" \
2018 -e \"/^#[ ]*include[ ]/b\" \
2019 -e \"/^#[ ]*define[ ]/b\" \
2020 -e \"/^#[ ]*if[ ]/b\" \
2021 -e \"/^#[ ]*ifdef[ ]/b\" \
2022 -e \"/^#[ ]*ifndef[ ]/b\" \
2023 -e \"/^#[ ]*else/b\" \
2024 -e \"/^#[ ]*elif[ ]/b\" \
2025 -e \"/^#[ ]*undef[ ]/b\" \
2026 -e \"/^#[ ]*endif/b\" \
2029 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2033 %s %s -e '/^[^#]/b' \
2034 -e '/^#[ ]*include[ ]/b' \
2035 -e '/^#[ ]*define[ ]/b' \
2036 -e '/^#[ ]*if[ ]/b' \
2037 -e '/^#[ ]*ifdef[ ]/b' \
2038 -e '/^#[ ]*ifndef[ ]/b' \
2039 -e '/^#[ ]*else/b' \
2040 -e '/^#[ ]*elif[ ]/b' \
2041 -e '/^#[ ]*undef[ ]/b' \
2042 -e '/^#[ ]*endif/b' \
2047 %s %s -e '/^[^#]/b' \
2048 -e '/^#[ ]*include[ ]/b' \
2049 -e '/^#[ ]*define[ ]/b' \
2050 -e '/^#[ ]*if[ ]/b' \
2051 -e '/^#[ ]*ifdef[ ]/b' \
2052 -e '/^#[ ]*ifndef[ ]/b' \
2053 -e '/^#[ ]*else/b' \
2054 -e '/^#[ ]*elif[ ]/b' \
2055 -e '/^#[ ]*undef[ ]/b' \
2056 -e '/^#[ ]*endif/b' \
2065 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2067 scriptname, cpp, sv, CPPMINUS);
2068 PL_doextract = FALSE;
2069 #ifdef IAMSUID /* actually, this is caught earlier */
2070 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2072 (void)seteuid(PL_uid); /* musn't stay setuid root */
2075 (void)setreuid((Uid_t)-1, PL_uid);
2077 #ifdef HAS_SETRESUID
2078 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2080 PerlProc_setuid(PL_uid);
2084 if (PerlProc_geteuid() != PL_uid)
2085 croak("Can't do seteuid!\n");
2087 #endif /* IAMSUID */
2088 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2092 else if (!*scriptname) {
2093 forbid_setid("program input from stdin");
2094 PL_rsfp = PerlIO_stdin();
2097 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2098 #if defined(HAS_FCNTL) && defined(F_SETFD)
2100 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2105 #ifndef IAMSUID /* in case script is not readable before setuid */
2107 PerlLIO_stat(SvPVX(GvSV(PL_curcop->cop_filegv)),&PL_statbuf) >= 0 &&
2108 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2111 PerlProc_execv(form("%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv);
2112 croak("Can't do setuid\n");
2116 croak("Can't open perl script \"%s\": %s\n",
2117 SvPVX(GvSV(PL_curcop->cop_filegv)), Strerror(errno));
2122 * I_SYSSTATVFS HAS_FSTATVFS
2124 * I_STATFS HAS_FSTATFS
2125 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2126 * here so that metaconfig picks them up. */
2130 fd_on_nosuid_fs(int fd)
2135 * Preferred order: fstatvfs(), fstatfs(), getmntent().
2136 * fstatvfs() is UNIX98.
2138 * getmntent() is O(number-of-mounted-filesystems) and can hang.
2141 # ifdef HAS_FSTATVFS
2142 struct statvfs stfs;
2143 check_okay = fstatvfs(fd, &stfs) == 0;
2144 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2146 # if defined(HAS_FSTATFS) && defined(HAS_STRUCT_STATFS_FLAGS)
2148 check_okay = fstatfs(fd, &stfs) == 0;
2149 # undef PERL_MOUNT_NOSUID
2150 # if !defined(PERL_MOUNT_NOSUID) && defined(MNT_NOSUID)
2151 # define PERL_MOUNT_NOSUID MNT_NOSUID
2153 # if !defined(PERL_MOUNT_NOSUID) && defined(MS_NOSUID)
2154 # define PERL_MOUNT_NOSUID MS_NOSUID
2156 # if !defined(PERL_MOUNT_NOSUID) && defined(M_NOSUID)
2157 # define PERL_MOUNT_NOSUID M_NOSUID
2159 # ifdef PERL_MOUNT_NOSUID
2160 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2163 # if defined(HAS_GETMNTENT) && defined(HAS_HASMNTOPT) && defined(MNTOPT_NOSUID)
2164 FILE *mtab = fopen("/etc/mtab", "r");
2165 struct mntent *entry;
2166 struct stat stb, fsb;
2168 if (mtab && (fstat(fd, &stb) == 0)) {
2169 while (entry = getmntent(mtab)) {
2170 if (stat(entry->mnt_dir, &fsb) == 0
2171 && fsb.st_dev == stb.st_dev)
2173 /* found the filesystem */
2175 if (hasmntopt(entry, MNTOPT_NOSUID))
2178 } /* A single fs may well fail its stat(). */
2183 # endif /* mntent */
2184 # endif /* statfs */
2185 # endif /* statvfs */
2187 croak("Can't check filesystem of script \"%s\"", PL_origfilename);
2190 #endif /* IAMSUID */
2193 validate_suid(char *validarg, char *scriptname, int fdscript)
2197 /* do we need to emulate setuid on scripts? */
2199 /* This code is for those BSD systems that have setuid #! scripts disabled
2200 * in the kernel because of a security problem. Merely defining DOSUID
2201 * in perl will not fix that problem, but if you have disabled setuid
2202 * scripts in the kernel, this will attempt to emulate setuid and setgid
2203 * on scripts that have those now-otherwise-useless bits set. The setuid
2204 * root version must be called suidperl or sperlN.NNN. If regular perl
2205 * discovers that it has opened a setuid script, it calls suidperl with
2206 * the same argv that it had. If suidperl finds that the script it has
2207 * just opened is NOT setuid root, it sets the effective uid back to the
2208 * uid. We don't just make perl setuid root because that loses the
2209 * effective uid we had before invoking perl, if it was different from the
2212 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2213 * be defined in suidperl only. suidperl must be setuid root. The
2214 * Configure script will set this up for you if you want it.
2221 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2222 croak("Can't stat script \"%s\"",PL_origfilename);
2223 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2228 #ifndef HAS_SETREUID
2229 /* On this access check to make sure the directories are readable,
2230 * there is actually a small window that the user could use to make
2231 * filename point to an accessible directory. So there is a faint
2232 * chance that someone could execute a setuid script down in a
2233 * non-accessible directory. I don't know what to do about that.
2234 * But I don't think it's too important. The manual lies when
2235 * it says access() is useful in setuid programs.
2237 if (PerlLIO_access(SvPVX(GvSV(PL_curcop->cop_filegv)),1)) /*double check*/
2238 croak("Permission denied");
2240 /* If we can swap euid and uid, then we can determine access rights
2241 * with a simple stat of the file, and then compare device and
2242 * inode to make sure we did stat() on the same file we opened.
2243 * Then we just have to make sure he or she can execute it.
2246 struct stat tmpstatbuf;
2250 setreuid(PL_euid,PL_uid) < 0
2253 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2256 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2257 croak("Can't swap uid and euid"); /* really paranoid */
2258 if (PerlLIO_stat(SvPVX(GvSV(PL_curcop->cop_filegv)),&tmpstatbuf) < 0)
2259 croak("Permission denied"); /* testing full pathname here */
2260 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2261 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2262 croak("Permission denied");
2264 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2265 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2266 (void)PerlIO_close(PL_rsfp);
2267 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2268 PerlIO_printf(PL_rsfp,
2269 "User %ld tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2270 (Filename of set-id script was %s, uid %ld gid %ld.)\n\nSincerely,\nperl\n",
2271 (long)PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2272 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
2273 SvPVX(GvSV(PL_curcop->cop_filegv)),
2274 (long)PL_statbuf.st_uid, (long)PL_statbuf.st_gid);
2275 (void)PerlProc_pclose(PL_rsfp);
2277 croak("Permission denied\n");
2281 setreuid(PL_uid,PL_euid) < 0
2283 # if defined(HAS_SETRESUID)
2284 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2287 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2288 croak("Can't reswap uid and euid");
2289 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2290 croak("Permission denied\n");
2292 #endif /* HAS_SETREUID */
2293 #endif /* IAMSUID */
2295 if (!S_ISREG(PL_statbuf.st_mode))
2296 croak("Permission denied");
2297 if (PL_statbuf.st_mode & S_IWOTH)
2298 croak("Setuid/gid script is writable by world");
2299 PL_doswitches = FALSE; /* -s is insecure in suid */
2300 PL_curcop->cop_line++;
2301 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2302 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2303 croak("No #! line");
2304 s = SvPV(PL_linestr,n_a)+2;
2306 while (!isSPACE(*s)) s++;
2307 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2308 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2309 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2310 croak("Not a perl script");
2311 while (*s == ' ' || *s == '\t') s++;
2313 * #! arg must be what we saw above. They can invoke it by
2314 * mentioning suidperl explicitly, but they may not add any strange
2315 * arguments beyond what #! says if they do invoke suidperl that way.
2317 len = strlen(validarg);
2318 if (strEQ(validarg," PHOOEY ") ||
2319 strnNE(s,validarg,len) || !isSPACE(s[len]))
2320 croak("Args must match #! line");
2323 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2324 PL_euid == PL_statbuf.st_uid)
2326 croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2327 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2328 #endif /* IAMSUID */
2330 if (PL_euid) { /* oops, we're not the setuid root perl */
2331 (void)PerlIO_close(PL_rsfp);
2334 PerlProc_execv(form("%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv);
2336 croak("Can't do setuid\n");
2339 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2341 (void)setegid(PL_statbuf.st_gid);
2344 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2346 #ifdef HAS_SETRESGID
2347 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2349 PerlProc_setgid(PL_statbuf.st_gid);
2353 if (PerlProc_getegid() != PL_statbuf.st_gid)
2354 croak("Can't do setegid!\n");
2356 if (PL_statbuf.st_mode & S_ISUID) {
2357 if (PL_statbuf.st_uid != PL_euid)
2359 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2362 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2364 #ifdef HAS_SETRESUID
2365 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2367 PerlProc_setuid(PL_statbuf.st_uid);
2371 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2372 croak("Can't do seteuid!\n");
2374 else if (PL_uid) { /* oops, mustn't run as root */
2376 (void)seteuid((Uid_t)PL_uid);
2379 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2381 #ifdef HAS_SETRESUID
2382 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2384 PerlProc_setuid((Uid_t)PL_uid);
2388 if (PerlProc_geteuid() != PL_uid)
2389 croak("Can't do seteuid!\n");
2392 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2393 croak("Permission denied\n"); /* they can't do this */
2396 else if (PL_preprocess)
2397 croak("-P not allowed for setuid/setgid script\n");
2398 else if (fdscript >= 0)
2399 croak("fd script not allowed in suidperl\n");
2401 croak("Script is not setuid/setgid in suidperl\n");
2403 /* We absolutely must clear out any saved ids here, so we */
2404 /* exec the real perl, substituting fd script for scriptname. */
2405 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2406 PerlIO_rewind(PL_rsfp);
2407 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2408 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2409 if (!PL_origargv[which])
2410 croak("Permission denied");
2411 PL_origargv[which] = savepv(form("/dev/fd/%d/%s",
2412 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
2413 #if defined(HAS_FCNTL) && defined(F_SETFD)
2414 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
2416 PerlProc_execv(form("%s/perl%s", BIN_EXP, PL_patchlevel), PL_origargv);/* try again */
2417 croak("Can't do setuid\n");
2418 #endif /* IAMSUID */
2420 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
2421 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
2423 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
2424 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
2426 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
2429 croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2430 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2431 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
2432 /* not set-id, must be wrapped */
2438 find_beginning(void)
2440 register char *s, *s2;
2442 /* skip forward in input to the real script? */
2445 while (PL_doextract) {
2446 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
2447 croak("No Perl script found in input\n");
2448 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
2449 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
2450 PL_doextract = FALSE;
2451 while (*s && !(isSPACE (*s) || *s == '#')) s++;
2453 while (*s == ' ' || *s == '\t') s++;
2455 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
2456 if (strnEQ(s2-4,"perl",4))
2458 while (s = moreswitches(s)) ;
2460 if (PL_cddir && PerlDir_chdir(PL_cddir) < 0)
2461 croak("Can't chdir to %s",PL_cddir);
2470 PL_uid = (int)PerlProc_getuid();
2471 PL_euid = (int)PerlProc_geteuid();
2472 PL_gid = (int)PerlProc_getgid();
2473 PL_egid = (int)PerlProc_getegid();
2475 PL_uid |= PL_gid << 16;
2476 PL_euid |= PL_egid << 16;
2478 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
2482 forbid_setid(char *s)
2484 if (PL_euid != PL_uid)
2485 croak("No %s allowed while running setuid", s);
2486 if (PL_egid != PL_gid)
2487 croak("No %s allowed while running setgid", s);
2494 PL_curstash = PL_debstash;
2495 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
2496 AvREAL_off(PL_dbargs);
2497 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
2498 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
2499 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
2500 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
2501 sv_setiv(PL_DBsingle, 0);
2502 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
2503 sv_setiv(PL_DBtrace, 0);
2504 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
2505 sv_setiv(PL_DBsignal, 0);
2506 PL_curstash = PL_defstash;
2509 #ifndef STRESS_REALLOC
2510 #define REASONABLE(size) (size)
2512 #define REASONABLE(size) (1) /* unreasonable */
2516 init_stacks(ARGSproto)
2518 /* start with 128-item stack and 8K cxstack */
2519 PL_curstackinfo = new_stackinfo(REASONABLE(128),
2520 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
2521 PL_curstackinfo->si_type = PERLSI_MAIN;
2522 PL_curstack = PL_curstackinfo->si_stack;
2523 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
2525 PL_stack_base = AvARRAY(PL_curstack);
2526 PL_stack_sp = PL_stack_base;
2527 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
2529 New(50,PL_tmps_stack,REASONABLE(128),SV*);
2532 PL_tmps_max = REASONABLE(128);
2534 New(54,PL_markstack,REASONABLE(32),I32);
2535 PL_markstack_ptr = PL_markstack;
2536 PL_markstack_max = PL_markstack + REASONABLE(32);
2540 New(54,PL_scopestack,REASONABLE(32),I32);
2541 PL_scopestack_ix = 0;
2542 PL_scopestack_max = REASONABLE(32);
2544 New(54,PL_savestack,REASONABLE(128),ANY);
2545 PL_savestack_ix = 0;
2546 PL_savestack_max = REASONABLE(128);
2548 New(54,PL_retstack,REASONABLE(16),OP*);
2550 PL_retstack_max = REASONABLE(16);
2559 while (PL_curstackinfo->si_next)
2560 PL_curstackinfo = PL_curstackinfo->si_next;
2561 while (PL_curstackinfo) {
2562 PERL_SI *p = PL_curstackinfo->si_prev;
2563 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
2564 Safefree(PL_curstackinfo->si_cxstack);
2565 Safefree(PL_curstackinfo);
2566 PL_curstackinfo = p;
2568 Safefree(PL_tmps_stack);
2569 Safefree(PL_markstack);
2570 Safefree(PL_scopestack);
2571 Safefree(PL_savestack);
2572 Safefree(PL_retstack);
2574 Safefree(PL_debname);
2575 Safefree(PL_debdelim);
2580 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
2591 lex_start(PL_linestr);
2593 PL_subname = newSVpv("main",4);
2597 init_predump_symbols(void)
2603 sv_setpvn(perl_get_sv("\"", TRUE), " ", 1);
2604 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
2605 GvMULTI_on(PL_stdingv);
2606 IoIFP(GvIOp(PL_stdingv)) = PerlIO_stdin();
2607 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
2609 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(PL_stdingv));
2611 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
2613 IoOFP(GvIOp(tmpgv)) = IoIFP(GvIOp(tmpgv)) = PerlIO_stdout();
2615 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
2617 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(PL_defoutgv));
2619 othergv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
2620 GvMULTI_on(othergv);
2621 IoOFP(GvIOp(othergv)) = IoIFP(GvIOp(othergv)) = PerlIO_stderr();
2622 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
2624 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(othergv));
2626 PL_statname = NEWSV(66,0); /* last filename we did stat on */
2629 PL_osname = savepv(OSNAME);
2633 init_postdump_symbols(register int argc, register char **argv, register char **env)
2640 argc--,argv++; /* skip name of script */
2641 if (PL_doswitches) {
2642 for (; argc > 0 && **argv == '-'; argc--,argv++) {
2645 if (argv[0][1] == '-') {
2649 if (s = strchr(argv[0], '=')) {
2651 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
2654 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
2657 PL_toptarget = NEWSV(0,0);
2658 sv_upgrade(PL_toptarget, SVt_PVFM);
2659 sv_setpvn(PL_toptarget, "", 0);
2660 PL_bodytarget = NEWSV(0,0);
2661 sv_upgrade(PL_bodytarget, SVt_PVFM);
2662 sv_setpvn(PL_bodytarget, "", 0);
2663 PL_formtarget = PL_bodytarget;
2666 if (tmpgv = gv_fetchpv("0",TRUE, SVt_PV)) {
2667 sv_setpv(GvSV(tmpgv),PL_origfilename);
2668 magicname("0", "0", 1);
2670 if (tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))
2671 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
2672 if (PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV)) {
2673 GvMULTI_on(PL_argvgv);
2674 (void)gv_AVadd(PL_argvgv);
2675 av_clear(GvAVn(PL_argvgv));
2676 for (; argc > 0; argc--,argv++) {
2677 av_push(GvAVn(PL_argvgv),newSVpv(argv[0],0));
2680 if (PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV)) {
2682 GvMULTI_on(PL_envgv);
2683 hv = GvHVn(PL_envgv);
2684 hv_magic(hv, PL_envgv, 'E');
2685 #ifndef VMS /* VMS doesn't have environ array */
2686 /* Note that if the supplied env parameter is actually a copy
2687 of the global environ then it may now point to free'd memory
2688 if the environment has been modified since. To avoid this
2689 problem we treat env==NULL as meaning 'use the default'
2694 environ[0] = Nullch;
2695 for (; *env; env++) {
2696 if (!(s = strchr(*env,'=')))
2702 sv = newSVpv(s--,0);
2703 (void)hv_store(hv, *env, s - *env, sv, 0);
2705 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
2706 /* Sins of the RTL. See note in my_setenv(). */
2707 (void)PerlEnv_putenv(savepv(*env));
2711 #ifdef DYNAMIC_ENV_FETCH
2712 HvNAME(hv) = savepv(ENV_HV_NAME);
2716 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
2717 sv_setiv(GvSV(tmpgv), (IV)getpid());
2726 s = PerlEnv_getenv("PERL5LIB");
2730 incpush(PerlEnv_getenv("PERLLIB"), FALSE);
2732 /* Treat PERL5?LIB as a possible search list logical name -- the
2733 * "natural" VMS idiom for a Unix path string. We allow each
2734 * element to be a set of |-separated directories for compatibility.
2738 if (my_trnlnm("PERL5LIB",buf,0))
2739 do { incpush(buf,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
2741 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE);
2745 /* Use the ~-expanded versions of APPLLIB (undocumented),
2746 ARCHLIB PRIVLIB SITEARCH and SITELIB
2749 incpush(APPLLIB_EXP, TRUE);
2753 incpush(ARCHLIB_EXP, FALSE);
2756 #define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
2759 incpush(PRIVLIB_EXP, TRUE);
2761 incpush(PRIVLIB_EXP, FALSE);
2765 incpush(SITEARCH_EXP, FALSE);
2769 incpush(SITELIB_EXP, TRUE);
2771 incpush(SITELIB_EXP, FALSE);
2775 incpush(".", FALSE);
2779 # define PERLLIB_SEP ';'
2782 # define PERLLIB_SEP '|'
2784 # define PERLLIB_SEP ':'
2787 #ifndef PERLLIB_MANGLE
2788 # define PERLLIB_MANGLE(s,n) (s)
2792 incpush(char *p, int addsubdirs)
2794 SV *subdir = Nullsv;
2800 subdir = sv_newmortal();
2801 if (!PL_archpat_auto) {
2802 STRLEN len = (sizeof(ARCHNAME) + strlen(PL_patchlevel)
2803 + sizeof("//auto"));
2804 New(55, PL_archpat_auto, len, char);
2805 sprintf(PL_archpat_auto, "/%s/%s/auto", ARCHNAME, PL_patchlevel);
2807 for (len = sizeof(ARCHNAME) + 2;
2808 PL_archpat_auto[len] != '\0' && PL_archpat_auto[len] != '/'; len++)
2809 if (PL_archpat_auto[len] == '.') PL_archpat_auto[len] = '_';
2814 /* Break at all separators */
2816 SV *libdir = NEWSV(55,0);
2819 /* skip any consecutive separators */
2820 while ( *p == PERLLIB_SEP ) {
2821 /* Uncomment the next line for PATH semantics */
2822 /* av_push(GvAVn(PL_incgv), newSVpv(".", 1)); */
2826 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
2827 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
2832 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
2833 p = Nullch; /* break out */
2837 * BEFORE pushing libdir onto @INC we may first push version- and
2838 * archname-specific sub-directories.
2841 struct stat tmpstatbuf;
2846 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
2848 while (unix[len-1] == '/') len--; /* Cosmetic */
2849 sv_usepvn(libdir,unix,len);
2852 PerlIO_printf(PerlIO_stderr(),
2853 "Failed to unixify @INC element \"%s\"\n",
2856 /* .../archname/version if -d .../archname/version/auto */
2857 sv_setsv(subdir, libdir);
2858 sv_catpv(subdir, PL_archpat_auto);
2859 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2860 S_ISDIR(tmpstatbuf.st_mode))
2861 av_push(GvAVn(PL_incgv),
2862 newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2864 /* .../archname if -d .../archname/auto */
2865 sv_insert(subdir, SvCUR(libdir) + sizeof(ARCHNAME),
2866 strlen(PL_patchlevel) + 1, "", 0);
2867 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2868 S_ISDIR(tmpstatbuf.st_mode))
2869 av_push(GvAVn(PL_incgv),
2870 newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2873 /* finally push this lib directory on the end of @INC */
2874 av_push(GvAVn(PL_incgv), libdir);
2879 STATIC struct perl_thread *
2882 struct perl_thread *thr;
2885 Newz(53, thr, 1, struct perl_thread);
2886 PL_curcop = &PL_compiling;
2887 thr->cvcache = newHV();
2888 thr->threadsv = newAV();
2889 /* thr->threadsvp is set when find_threadsv is called */
2890 thr->specific = newAV();
2891 thr->errhv = newHV();
2892 thr->flags = THRf_R_JOINABLE;
2893 MUTEX_INIT(&thr->mutex);
2894 /* Handcraft thrsv similarly to mess_sv */
2895 New(53, PL_thrsv, 1, SV);
2896 Newz(53, xpv, 1, XPV);
2897 SvFLAGS(PL_thrsv) = SVt_PV;
2898 SvANY(PL_thrsv) = (void*)xpv;
2899 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
2900 SvPVX(PL_thrsv) = (char*)thr;
2901 SvCUR_set(PL_thrsv, sizeof(thr));
2902 SvLEN_set(PL_thrsv, sizeof(thr));
2903 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
2904 thr->oursv = PL_thrsv;
2905 PL_chopset = " \n-";
2908 MUTEX_LOCK(&PL_threads_mutex);
2913 MUTEX_UNLOCK(&PL_threads_mutex);
2915 #ifdef HAVE_THREAD_INTERN
2916 init_thread_intern(thr);
2919 #ifdef SET_THREAD_SELF
2920 SET_THREAD_SELF(thr);
2922 thr->self = pthread_self();
2923 #endif /* SET_THREAD_SELF */
2927 * These must come after the SET_THR because sv_setpvn does
2928 * SvTAINT and the taint fields require dTHR.
2930 PL_toptarget = NEWSV(0,0);
2931 sv_upgrade(PL_toptarget, SVt_PVFM);
2932 sv_setpvn(PL_toptarget, "", 0);
2933 PL_bodytarget = NEWSV(0,0);
2934 sv_upgrade(PL_bodytarget, SVt_PVFM);
2935 sv_setpvn(PL_bodytarget, "", 0);
2936 PL_formtarget = PL_bodytarget;
2937 thr->errsv = newSVpv("", 0);
2938 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
2941 PL_regcompp = FUNC_NAME_TO_PTR(pregcomp);
2942 PL_regexecp = FUNC_NAME_TO_PTR(regexec_flags);
2944 PL_reginterp_cnt = 0;
2948 #endif /* USE_THREADS */
2951 call_list(I32 oldscope, AV *paramList)
2954 line_t oldline = PL_curcop->cop_line;
2959 while (AvFILL(paramList) >= 0) {
2960 CV *cv = (CV*)av_shift(paramList);
2968 PUSHMARK(PL_stack_sp);
2969 perl_call_sv((SV*)cv, G_EVAL|G_DISCARD);
2970 (void)SvPV(atsv, len);
2973 PL_curcop = &PL_compiling;
2974 PL_curcop->cop_line = oldline;
2975 if (paramList == PL_beginav)
2976 sv_catpv(atsv, "BEGIN failed--compilation aborted");
2978 sv_catpv(atsv, "END failed--cleanup aborted");
2979 while (PL_scopestack_ix > oldscope)
2981 croak("%s", SvPVX(atsv));
2989 /* my_exit() was called */
2990 while (PL_scopestack_ix > oldscope)
2993 PL_curstash = PL_defstash;
2995 call_list(oldscope, PL_endav);
2997 PL_curcop = &PL_compiling;
2998 PL_curcop->cop_line = oldline;
2999 if (PL_statusvalue) {
3000 if (paramList == PL_beginav)
3001 croak("BEGIN failed--compilation aborted");
3003 croak("END failed--cleanup aborted");
3008 if (!PL_restartop) {
3009 PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
3014 PL_curcop = &PL_compiling;
3015 PL_curcop->cop_line = oldline;
3027 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3028 thr, (unsigned long) status));
3037 STATUS_NATIVE_SET(status);
3044 my_failure_exit(void)
3047 if (vaxc$errno & 1) {
3048 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3049 STATUS_NATIVE_SET(44);
3052 if (!vaxc$errno && errno) /* unlikely */
3053 STATUS_NATIVE_SET(44);
3055 STATUS_NATIVE_SET(vaxc$errno);
3060 STATUS_POSIX_SET(errno);
3062 exitstatus = STATUS_POSIX >> 8;
3063 if (exitstatus & 255)
3064 STATUS_POSIX_SET(exitstatus);
3066 STATUS_POSIX_SET(255);
3076 register PERL_CONTEXT *cx;
3081 SvREFCNT_dec(PL_e_script);
3082 PL_e_script = Nullsv;
3085 POPSTACK_TO(PL_mainstack);
3086 if (cxstack_ix >= 0) {
3089 POPBLOCK(cx,PL_curpm);
3098 #endif /* PERL_OBJECT */
3104 read_e_script(CPerlObj *pPerl, int idx, SV *buf_sv, int maxlen)
3106 read_e_script(int idx, SV *buf_sv, int maxlen)
3110 p = SvPVX(PL_e_script);
3111 nl = strchr(p, '\n');
3112 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3114 filter_del(read_e_script);
3117 sv_catpvn(buf_sv, p, nl-p);
3118 sv_chop(PL_e_script, nl);