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_linestr = NEWSV(65,79);
145 sv_upgrade(PL_linestr,SVt_PVIV);
147 if (!SvREADONLY(&PL_sv_undef)) {
148 /* set read-only and try to insure than we wont see REFCNT==0
151 SvREADONLY_on(&PL_sv_undef);
152 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
154 sv_setpv(&PL_sv_no,PL_No);
156 SvREADONLY_on(&PL_sv_no);
157 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
159 sv_setpv(&PL_sv_yes,PL_Yes);
161 SvREADONLY_on(&PL_sv_yes);
162 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
167 /* PL_sighandlerp = sighandler; */
169 PL_sighandlerp = sighandler;
171 PL_pidstatus = newHV();
175 * There is no way we can refer to them from Perl so close them to save
176 * space. The other alternative would be to provide STDAUX and STDPRN
179 (void)fclose(stdaux);
180 (void)fclose(stdprn);
184 PL_nrs = newSVpv("\n", 1);
185 PL_rs = SvREFCNT_inc(PL_nrs);
190 PL_perl_destruct_level = 1;
192 if (PL_perl_destruct_level > 0)
197 PL_lex_state = LEX_NOTPARSING;
199 PL_start_env.je_prev = NULL;
200 PL_start_env.je_ret = -1;
201 PL_start_env.je_mustcatch = TRUE;
202 PL_top_env = &PL_start_env;
205 SET_NUMERIC_STANDARD();
206 #if defined(SUBVERSION) && SUBVERSION > 0
207 sprintf(PL_patchlevel, "%7.5f", (double) 5
208 + ((double) PATCHLEVEL / (double) 1000)
209 + ((double) SUBVERSION / (double) 100000));
211 sprintf(PL_patchlevel, "%5.3f", (double) 5 +
212 ((double) PATCHLEVEL / (double) 1000));
215 #if defined(LOCAL_PATCH_COUNT)
216 PL_localpatches = local_patches; /* For possible -v */
219 PerlIO_init(); /* Hook to IO system */
221 PL_fdpid = newAV(); /* for remembering popen pids by fd */
222 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
225 New(51,PL_debname,128,char);
226 New(52,PL_debdelim,128,char);
234 CPerlObj::perl_destruct(void)
236 perl_destruct(register PerlInterpreter *sv_interp)
240 int destruct_level; /* 0=none, 1=full, 2=full with checks */
245 #endif /* USE_THREADS */
248 if (!(PL_curinterp = sv_interp))
254 /* Pass 1 on any remaining threads: detach joinables, join zombies */
256 MUTEX_LOCK(&PL_threads_mutex);
257 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
258 "perl_destruct: waiting for %d threads...\n",
260 for (t = thr->next; t != thr; t = t->next) {
261 MUTEX_LOCK(&t->mutex);
262 switch (ThrSTATE(t)) {
265 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
266 "perl_destruct: joining zombie %p\n", t));
267 ThrSETSTATE(t, THRf_DEAD);
268 MUTEX_UNLOCK(&t->mutex);
271 * The SvREFCNT_dec below may take a long time (e.g. av
272 * may contain an object scalar whose destructor gets
273 * called) so we have to unlock threads_mutex and start
276 MUTEX_UNLOCK(&PL_threads_mutex);
278 SvREFCNT_dec((SV*)av);
279 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
280 "perl_destruct: joined zombie %p OK\n", t));
282 case THRf_R_JOINABLE:
283 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
284 "perl_destruct: detaching thread %p\n", t));
285 ThrSETSTATE(t, THRf_R_DETACHED);
287 * We unlock threads_mutex and t->mutex in the opposite order
288 * from which we locked them just so that DETACH won't
289 * deadlock if it panics. It's only a breach of good style
290 * not a bug since they are unlocks not locks.
292 MUTEX_UNLOCK(&PL_threads_mutex);
294 MUTEX_UNLOCK(&t->mutex);
297 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
298 "perl_destruct: ignoring %p (state %u)\n",
300 MUTEX_UNLOCK(&t->mutex);
301 /* fall through and out */
304 /* We leave the above "Pass 1" loop with threads_mutex still locked */
306 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
307 while (PL_nthreads > 1)
309 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
310 "perl_destruct: final wait for %d threads\n",
312 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
314 /* At this point, we're the last thread */
315 MUTEX_UNLOCK(&PL_threads_mutex);
316 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "perl_destruct: armageddon has arrived\n"));
317 MUTEX_DESTROY(&PL_threads_mutex);
318 COND_DESTROY(&PL_nthreads_cond);
319 #endif /* !defined(FAKE_THREADS) */
320 #endif /* USE_THREADS */
322 destruct_level = PL_perl_destruct_level;
326 if (s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL")) {
328 if (destruct_level < i)
341 /* We must account for everything. */
343 /* Destroy the main CV and syntax tree */
345 PL_curpad = AvARRAY(PL_comppad);
346 op_free(PL_main_root);
347 PL_main_root = Nullop;
349 PL_curcop = &PL_compiling;
350 PL_main_start = Nullop;
351 SvREFCNT_dec(PL_main_cv);
354 if (PL_sv_objcount) {
356 * Try to destruct global references. We do this first so that the
357 * destructors and destructees still exist. Some sv's might remain.
358 * Non-referenced objects are on their own.
365 /* unhook hooks which will soon be, or use, destroyed data */
366 SvREFCNT_dec(PL_warnhook);
367 PL_warnhook = Nullsv;
368 SvREFCNT_dec(PL_diehook);
370 SvREFCNT_dec(PL_parsehook);
371 PL_parsehook = Nullsv;
373 /* call exit list functions */
374 while (PL_exitlistlen-- > 0)
375 PL_exitlist[PL_exitlistlen].fn(PERL_OBJECT_THIS_ PL_exitlist[PL_exitlistlen].ptr);
377 Safefree(PL_exitlist);
379 if (destruct_level == 0){
381 DEBUG_P(debprofdump());
383 /* The exit() function will do everything that needs doing. */
387 /* loosen bonds of global variables */
390 (void)PerlIO_close(PL_rsfp);
394 /* Filters for program text */
395 SvREFCNT_dec(PL_rsfp_filters);
396 PL_rsfp_filters = Nullav;
399 PL_preprocess = FALSE;
405 PL_doswitches = FALSE;
406 PL_dowarn = G_WARN_OFF;
407 PL_doextract = FALSE;
408 PL_sawampersand = FALSE; /* must save all match strings */
409 PL_sawstudy = FALSE; /* do fbm_instr on all strings */
413 Safefree(PL_inplace);
417 SvREFCNT_dec(PL_e_script);
418 PL_e_script = Nullsv;
421 /* magical thingies */
423 Safefree(PL_ofs); /* $, */
426 Safefree(PL_ors); /* $\ */
429 SvREFCNT_dec(PL_rs); /* $/ */
432 SvREFCNT_dec(PL_nrs); /* $/ helper */
435 PL_multiline = 0; /* $* */
437 SvREFCNT_dec(PL_statname);
438 PL_statname = Nullsv;
441 /* defgv, aka *_ should be taken care of elsewhere */
443 /* clean up after study() */
444 SvREFCNT_dec(PL_lastscream);
445 PL_lastscream = Nullsv;
446 Safefree(PL_screamfirst);
448 Safefree(PL_screamnext);
451 /* startup and shutdown function lists */
452 SvREFCNT_dec(PL_beginav);
453 SvREFCNT_dec(PL_endav);
454 SvREFCNT_dec(PL_initav);
459 /* shortcuts just get cleared */
466 PL_argvoutgv = Nullgv;
468 PL_last_in_gv = Nullgv;
471 /* reset so print() ends up where we expect */
474 /* Prepare to destruct main symbol table. */
481 if (destruct_level >= 2) {
482 if (PL_scopestack_ix != 0)
483 warn("Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
484 (long)PL_scopestack_ix);
485 if (PL_savestack_ix != 0)
486 warn("Unbalanced saves: %ld more saves than restores\n",
487 (long)PL_savestack_ix);
488 if (PL_tmps_floor != -1)
489 warn("Unbalanced tmps: %ld more allocs than frees\n",
490 (long)PL_tmps_floor + 1);
491 if (cxstack_ix != -1)
492 warn("Unbalanced context: %ld more PUSHes than POPs\n",
493 (long)cxstack_ix + 1);
496 /* Now absolutely destruct everything, somehow or other, loops or no. */
498 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
499 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
500 last_sv_count = PL_sv_count;
503 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
504 SvFLAGS(PL_strtab) |= SVt_PVHV;
506 /* Destruct the global string table. */
508 /* Yell and reset the HeVAL() slots that are still holding refcounts,
509 * so that sv_free() won't fail on them.
517 max = HvMAX(PL_strtab);
518 array = HvARRAY(PL_strtab);
522 warn("Unbalanced string table refcount: (%d) for \"%s\"",
523 HeVAL(hent) - Nullsv, HeKEY(hent));
524 HeVAL(hent) = Nullsv;
534 SvREFCNT_dec(PL_strtab);
536 if (PL_sv_count != 0)
537 warn("Scalars leaked: %ld\n", (long)PL_sv_count);
541 /* No SVs have survived, need to clean out */
543 PL_pidstatus = Nullhv;
544 Safefree(PL_origfilename);
545 Safefree(PL_archpat_auto);
546 Safefree(PL_reg_start_tmp);
547 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
548 Safefree(PL_op_mask);
550 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
552 DEBUG_P(debprofdump());
554 MUTEX_DESTROY(&PL_sv_mutex);
555 MUTEX_DESTROY(&PL_eval_mutex);
556 COND_DESTROY(&PL_eval_cond);
558 /* As the penultimate thing, free the non-arena SV for thrsv */
559 Safefree(SvPVX(PL_thrsv));
560 Safefree(SvANY(PL_thrsv));
563 #endif /* USE_THREADS */
565 /* As the absolutely last thing, free the non-arena SV for mess() */
568 /* it could have accumulated taint magic */
569 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
572 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
573 moremagic = mg->mg_moremagic;
574 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
575 Safefree(mg->mg_ptr);
579 /* we know that type >= SVt_PV */
580 SvOOK_off(PL_mess_sv);
581 Safefree(SvPVX(PL_mess_sv));
582 Safefree(SvANY(PL_mess_sv));
583 Safefree(PL_mess_sv);
590 CPerlObj::perl_free(void)
592 perl_free(PerlInterpreter *sv_interp)
598 if (!(PL_curinterp = sv_interp))
606 CPerlObj::perl_atexit(void (*fn) (CPerlObj*,void *), void *ptr)
608 perl_atexit(void (*fn) (void *), void *ptr)
611 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
612 PL_exitlist[PL_exitlistlen].fn = fn;
613 PL_exitlist[PL_exitlistlen].ptr = ptr;
619 CPerlObj::perl_parse(void (*xsinit) (CPerlObj*), int argc, char **argv, char **env)
621 perl_parse(PerlInterpreter *sv_interp, void (*xsinit) (void), int argc, char **argv, char **env)
627 char *scriptname = NULL;
628 VOL bool dosearch = FALSE;
636 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
639 croak("suidperl is no longer needed since the kernel can now execute\n\
640 setuid perl scripts securely.\n");
645 if (!(PL_curinterp = sv_interp))
649 #if defined(NeXT) && defined(__DYNAMIC__)
650 _dyld_lookup_and_bind
651 ("__environ", (unsigned long *) &environ_pointer, NULL);
656 #ifndef VMS /* VMS doesn't have environ array */
657 PL_origenviron = environ;
662 /* Come here if running an undumped a.out. */
664 PL_origfilename = savepv(argv[0]);
665 PL_do_undump = FALSE;
666 cxstack_ix = -1; /* start label stack again */
668 init_postdump_symbols(argc,argv,env);
673 PL_curpad = AvARRAY(PL_comppad);
674 op_free(PL_main_root);
675 PL_main_root = Nullop;
677 PL_main_start = Nullop;
678 SvREFCNT_dec(PL_main_cv);
682 oldscope = PL_scopestack_ix;
683 PL_dowarn = G_WARN_OFF;
691 /* my_exit() was called */
692 while (PL_scopestack_ix > oldscope)
695 PL_curstash = PL_defstash;
697 call_list(oldscope, PL_endav);
699 return STATUS_NATIVE_EXPORT;
702 PerlIO_printf(PerlIO_stderr(), "panic: top_env\n");
706 sv_setpvn(PL_linestr,"",0);
707 sv = newSVpv("",0); /* first used for -I flags */
711 for (argc--,argv++; argc > 0; argc--,argv++) {
712 if (argv[0][0] != '-' || !argv[0][1])
716 validarg = " PHOOEY ";
744 if (s = moreswitches(s))
754 if (PL_euid != PL_uid || PL_egid != PL_gid)
755 croak("No -e allowed in setuid scripts");
757 PL_e_script = newSVpv("",0);
758 filter_add(read_e_script, NULL);
761 sv_catpv(PL_e_script, s);
763 sv_catpv(PL_e_script, argv[1]);
767 croak("No code specified for -e");
768 sv_catpv(PL_e_script, "\n");
771 case 'I': /* -I handled both here and in moreswitches() */
773 if (!*++s && (s=argv[1]) != Nullch) {
776 while (s && isSPACE(*s))
780 for (e = s; *e && !isSPACE(*e); e++) ;
787 } /* XXX else croak? */
791 PL_preprocess = TRUE;
801 PL_preambleav = newAV();
802 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
804 PL_Sv = newSVpv("print myconfig();",0);
806 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
808 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
810 #if defined(DEBUGGING) || defined(NO_EMBED) || defined(MULTIPLICITY)
811 sv_catpv(PL_Sv,"\" Compile-time options:");
813 sv_catpv(PL_Sv," DEBUGGING");
816 sv_catpv(PL_Sv," NO_EMBED");
819 sv_catpv(PL_Sv," MULTIPLICITY");
821 sv_catpv(PL_Sv,"\\n\",");
823 #if defined(LOCAL_PATCH_COUNT)
824 if (LOCAL_PATCH_COUNT > 0) {
826 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
827 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
828 if (PL_localpatches[i])
829 sv_catpvf(PL_Sv,"\" \\t%s\\n\",",PL_localpatches[i]);
833 sv_catpvf(PL_Sv,"\" Built under %s\\n\"",OSNAME);
836 sv_catpvf(PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
838 sv_catpvf(PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
843 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
844 print \" \\%ENV:\\n @env\\n\" if @env; \
845 print \" \\@INC:\\n @INC\\n\";");
848 PL_Sv = newSVpv("config_vars(qw(",0);
849 sv_catpv(PL_Sv, ++s);
850 sv_catpv(PL_Sv, "))");
853 av_push(PL_preambleav, PL_Sv);
854 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
860 PL_cddir = savepv(s);
865 if (!*++s || isSPACE(*s)) {
869 /* catch use of gnu style long options */
870 if (strEQ(s, "version")) {
874 if (strEQ(s, "help")) {
881 croak("Unrecognized switch: -%s (-h will show valid options)",s);
886 if (!PL_tainting && (s = PerlEnv_getenv("PERL5OPT"))) {
897 if (!strchr("DIMUdmw", *s))
898 croak("Illegal switch in PERL5OPT: -%c", *s);
904 scriptname = argv[0];
907 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
909 else if (scriptname == Nullch) {
911 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
919 open_script(scriptname,dosearch,sv,&fdscript);
921 validate_suid(validarg, scriptname,fdscript);
926 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
927 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
928 CvUNIQUE_on(PL_compcv);
930 PL_comppad = newAV();
931 av_push(PL_comppad, Nullsv);
932 PL_curpad = AvARRAY(PL_comppad);
933 PL_comppad_name = newAV();
934 PL_comppad_name_fill = 0;
935 PL_min_intro_pending = 0;
938 av_store(PL_comppad_name, 0, newSVpv("@_", 2));
939 PL_curpad[0] = (SV*)newAV();
940 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
941 CvOWNER(PL_compcv) = 0;
942 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
943 MUTEX_INIT(CvMUTEXP(PL_compcv));
944 #endif /* USE_THREADS */
946 comppadlist = newAV();
947 AvREAL_off(comppadlist);
948 av_store(comppadlist, 0, (SV*)PL_comppad_name);
949 av_store(comppadlist, 1, (SV*)PL_comppad);
950 CvPADLIST(PL_compcv) = comppadlist;
952 boot_core_UNIVERSAL();
955 (*xsinit)(PERL_OBJECT_THIS); /* in case linked C routines want magical variables */
956 #if defined(VMS) || defined(WIN32) || defined(DJGPP)
960 init_predump_symbols();
961 /* init_postdump_symbols not currently designed to be called */
962 /* more than once (ENV isn't cleared first, for example) */
963 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
965 init_postdump_symbols(argc,argv,env);
969 /* now parse the script */
971 SETERRNO(0,SS$_NORMAL);
973 if (yyparse() || PL_error_count) {
975 croak("%s had compilation errors.\n", PL_origfilename);
977 croak("Execution of %s aborted due to compilation errors.\n",
981 PL_curcop->cop_line = 0;
982 PL_curstash = PL_defstash;
983 PL_preprocess = FALSE;
985 SvREFCNT_dec(PL_e_script);
986 PL_e_script = Nullsv;
989 /* now that script is parsed, we can modify record separator */
991 PL_rs = SvREFCNT_inc(PL_nrs);
992 sv_setsv(perl_get_sv("/", TRUE), PL_rs);
996 if (ckWARN(WARN_ONCE))
997 gv_check(PL_defstash);
1003 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1004 dump_mstats("after compilation:");
1015 CPerlObj::perl_run(void)
1017 perl_run(PerlInterpreter *sv_interp)
1026 if (!(PL_curinterp = sv_interp))
1030 oldscope = PL_scopestack_ix;
1035 cxstack_ix = -1; /* start context stack again */
1038 /* my_exit() was called */
1039 while (PL_scopestack_ix > oldscope)
1042 PL_curstash = PL_defstash;
1044 call_list(oldscope, PL_endav);
1046 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1047 dump_mstats("after execution: ");
1050 return STATUS_NATIVE_EXPORT;
1052 if (!PL_restartop) {
1053 PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
1058 POPSTACK_TO(PL_mainstack);
1062 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1063 PL_sawampersand ? "Enabling" : "Omitting"));
1065 if (!PL_restartop) {
1066 DEBUG_x(dump_all());
1067 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1068 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%lx\n",
1069 (unsigned long) thr));
1072 PerlIO_printf(PerlIO_stderr(), "%s syntax OK\n", PL_origfilename);
1075 if (PERLDB_SINGLE && PL_DBsingle)
1076 sv_setiv(PL_DBsingle, 1);
1078 call_list(oldscope, PL_initav);
1084 PL_op = PL_restartop;
1088 else if (PL_main_start) {
1089 CvDEPTH(PL_main_cv) = 1;
1090 PL_op = PL_main_start;
1100 perl_get_sv(char *name, I32 create)
1104 if (name[1] == '\0' && !isALPHA(name[0])) {
1105 PADOFFSET tmp = find_threadsv(name);
1106 if (tmp != NOT_IN_PAD) {
1108 return THREADSV(tmp);
1111 #endif /* USE_THREADS */
1112 gv = gv_fetchpv(name, create, SVt_PV);
1119 perl_get_av(char *name, I32 create)
1121 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1130 perl_get_hv(char *name, I32 create)
1132 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1141 perl_get_cv(char *name, I32 create)
1143 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1144 if (create && !GvCVu(gv))
1145 return newSUB(start_subparse(FALSE, 0),
1146 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1154 /* Be sure to refetch the stack pointer after calling these routines. */
1157 perl_call_argv(char *sub_name, I32 flags, register char **argv)
1159 /* See G_* flags in cop.h */
1160 /* null terminated arg list */
1167 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1172 return perl_call_pv(sub_name, flags);
1176 perl_call_pv(char *sub_name, I32 flags)
1177 /* name of the subroutine */
1178 /* See G_* flags in cop.h */
1180 return perl_call_sv((SV*)perl_get_cv(sub_name, TRUE), flags);
1184 perl_call_method(char *methname, I32 flags)
1185 /* name of the subroutine */
1186 /* See G_* flags in cop.h */
1192 XPUSHs(sv_2mortal(newSVpv(methname,0)));
1197 return perl_call_sv(*PL_stack_sp--, flags);
1200 /* May be called with any of a CV, a GV, or an SV containing the name. */
1202 perl_call_sv(SV *sv, I32 flags)
1204 /* See G_* flags in cop.h */
1207 LOGOP myop; /* fake syntax tree node */
1211 bool oldcatch = CATCH_GET;
1216 if (flags & G_DISCARD) {
1221 Zero(&myop, 1, LOGOP);
1222 myop.op_next = Nullop;
1223 if (!(flags & G_NOARGS))
1224 myop.op_flags |= OPf_STACKED;
1225 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1226 (flags & G_ARRAY) ? OPf_WANT_LIST :
1231 EXTEND(PL_stack_sp, 1);
1232 *++PL_stack_sp = sv;
1234 oldscope = PL_scopestack_ix;
1236 if (PERLDB_SUB && PL_curstash != PL_debstash
1237 /* Handle first BEGIN of -d. */
1238 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1239 /* Try harder, since this may have been a sighandler, thus
1240 * curstash may be meaningless. */
1241 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1242 && !(flags & G_NODEBUG))
1243 PL_op->op_private |= OPpENTERSUB_DB;
1245 if (flags & G_EVAL) {
1246 cLOGOP->op_other = PL_op;
1248 /* we're trying to emulate pp_entertry() here */
1250 register PERL_CONTEXT *cx;
1251 I32 gimme = GIMME_V;
1256 push_return(PL_op->op_next);
1257 PUSHBLOCK(cx, CXt_EVAL, PL_stack_sp);
1259 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1262 if (flags & G_KEEPERR)
1277 /* my_exit() was called */
1278 PL_curstash = PL_defstash;
1282 croak("Callback called exit");
1287 PL_op = PL_restartop;
1291 PL_stack_sp = PL_stack_base + oldmark;
1292 if (flags & G_ARRAY)
1296 *++PL_stack_sp = &PL_sv_undef;
1304 if (PL_op == (OP*)&myop)
1305 PL_op = pp_entersub(ARGS);
1308 retval = PL_stack_sp - (PL_stack_base + oldmark);
1309 if ((flags & G_EVAL) && !(flags & G_KEEPERR))
1313 if (flags & G_EVAL) {
1314 if (PL_scopestack_ix > oldscope) {
1318 register PERL_CONTEXT *cx;
1330 CATCH_SET(oldcatch);
1332 if (flags & G_DISCARD) {
1333 PL_stack_sp = PL_stack_base + oldmark;
1342 /* Eval a string. The G_EVAL flag is always assumed. */
1345 perl_eval_sv(SV *sv, I32 flags)
1347 /* See G_* flags in cop.h */
1350 UNOP myop; /* fake syntax tree node */
1351 I32 oldmark = SP - PL_stack_base;
1358 if (flags & G_DISCARD) {
1365 Zero(PL_op, 1, UNOP);
1366 EXTEND(PL_stack_sp, 1);
1367 *++PL_stack_sp = sv;
1368 oldscope = PL_scopestack_ix;
1370 if (!(flags & G_NOARGS))
1371 myop.op_flags = OPf_STACKED;
1372 myop.op_next = Nullop;
1373 myop.op_type = OP_ENTEREVAL;
1374 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1375 (flags & G_ARRAY) ? OPf_WANT_LIST :
1377 if (flags & G_KEEPERR)
1378 myop.op_flags |= OPf_SPECIAL;
1388 /* my_exit() was called */
1389 PL_curstash = PL_defstash;
1393 croak("Callback called exit");
1398 PL_op = PL_restartop;
1402 PL_stack_sp = PL_stack_base + oldmark;
1403 if (flags & G_ARRAY)
1407 *++PL_stack_sp = &PL_sv_undef;
1412 if (PL_op == (OP*)&myop)
1413 PL_op = pp_entereval(ARGS);
1416 retval = PL_stack_sp - (PL_stack_base + oldmark);
1417 if (!(flags & G_KEEPERR))
1422 if (flags & G_DISCARD) {
1423 PL_stack_sp = PL_stack_base + oldmark;
1433 perl_eval_pv(char *p, I32 croak_on_error)
1436 SV* sv = newSVpv(p, 0);
1439 perl_eval_sv(sv, G_SCALAR);
1446 if (croak_on_error && SvTRUE(ERRSV))
1447 croak(SvPVx(ERRSV, PL_na));
1452 /* Require a module. */
1455 perl_require_pv(char *pv)
1459 PUSHSTACKi(PERLSI_REQUIRE);
1461 sv = sv_newmortal();
1462 sv_setpv(sv, "require '");
1465 perl_eval_sv(sv, G_DISCARD);
1471 magicname(char *sym, char *name, I32 namlen)
1475 if (gv = gv_fetchpv(sym,TRUE, SVt_PV))
1476 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1480 usage(char *name) /* XXX move this out into a module ? */
1483 /* This message really ought to be max 23 lines.
1484 * Removed -h because the user already knows that opton. Others? */
1486 static char *usage_msg[] = {
1487 "-0[octal] specify record separator (\\0, if no argument)",
1488 "-a autosplit mode with -n or -p (splits $_ into @F)",
1489 "-c check syntax only (runs BEGIN and END blocks)",
1490 "-d[:debugger] run scripts under debugger",
1491 "-D[number/list] set debugging flags (argument is a bit mask or flags)",
1492 "-e 'command' one line of script. Several -e's allowed. Omit [programfile].",
1493 "-F/pattern/ split() pattern for autosplit (-a). The //'s are optional.",
1494 "-i[extension] edit <> files in place (make backup if extension supplied)",
1495 "-Idirectory specify @INC/#include directory (may be used more than once)",
1496 "-l[octal] enable line ending processing, specifies line terminator",
1497 "-[mM][-]module.. executes `use/no module...' before executing your script.",
1498 "-n assume 'while (<>) { ... }' loop around your script",
1499 "-p assume loop like -n but print line also like sed",
1500 "-P run script through C preprocessor before compilation",
1501 "-s enable some switch parsing for switches after script name",
1502 "-S look for the script using PATH environment variable",
1503 "-T turn on tainting checks",
1504 "-u dump core after parsing script",
1505 "-U allow unsafe operations",
1506 "-v print version number, patchlevel plus VERY IMPORTANT perl info",
1507 "-V[:variable] print perl configuration information",
1508 "-w TURN WARNINGS ON FOR COMPILATION OF YOUR SCRIPT. Recommended.",
1509 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
1513 char **p = usage_msg;
1515 printf("\nUsage: %s [switches] [--] [programfile] [arguments]", name);
1517 printf("\n %s", *p++);
1520 /* This routine handles any switches that can be given during run */
1523 moreswitches(char *s)
1532 rschar = scan_oct(s, 4, &numlen);
1533 SvREFCNT_dec(PL_nrs);
1534 if (rschar & ~((U8)~0))
1535 PL_nrs = &PL_sv_undef;
1536 else if (!rschar && numlen >= 2)
1537 PL_nrs = newSVpv("", 0);
1540 PL_nrs = newSVpv(&ch, 1);
1546 PL_splitstr = savepv(s + 1);
1560 if (*s == ':' || *s == '=') {
1561 my_setenv("PERL5DB", form("use Devel::%s;", ++s));
1565 PL_perldb = PERLDB_ALL;
1572 if (isALPHA(s[1])) {
1573 static char debopts[] = "psltocPmfrxuLHXDS";
1576 for (s++; *s && (d = strchr(debopts,*s)); s++)
1577 PL_debug |= 1 << (d - debopts);
1580 PL_debug = atoi(s+1);
1581 for (s++; isDIGIT(*s); s++) ;
1583 PL_debug |= 0x80000000;
1585 warn("Recompile perl with -DDEBUGGING to use -D switch\n");
1586 for (s++; isALNUM(*s); s++) ;
1591 usage(PL_origargv[0]);
1595 Safefree(PL_inplace);
1596 PL_inplace = savepv(s+1);
1598 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
1601 if (*s == '-') /* Additional switches on #! line. */
1605 case 'I': /* -I handled both here and in parse_perl() */
1608 while (*s && isSPACE(*s))
1612 for (e = s; *e && !isSPACE(*e); e++) ;
1613 p = savepvn(s, e-s);
1619 croak("No space allowed after -I");
1627 PL_ors = savepv("\n");
1629 *PL_ors = scan_oct(s, 3 + (*s == '0'), &numlen);
1634 if (RsPARA(PL_nrs)) {
1639 PL_ors = SvPV(PL_nrs, PL_orslen);
1640 PL_ors = savepvn(PL_ors, PL_orslen);
1644 forbid_setid("-M"); /* XXX ? */
1647 forbid_setid("-m"); /* XXX ? */
1652 /* -M-foo == 'no foo' */
1653 if (*s == '-') { use = "no "; ++s; }
1654 sv = newSVpv(use,0);
1656 /* We allow -M'Module qw(Foo Bar)' */
1657 while(isALNUM(*s) || *s==':') ++s;
1659 sv_catpv(sv, start);
1660 if (*(start-1) == 'm') {
1662 croak("Can't use '%c' after -mname", *s);
1663 sv_catpv( sv, " ()");
1666 sv_catpvn(sv, start, s-start);
1667 sv_catpv(sv, " split(/,/,q{");
1672 if (PL_preambleav == NULL)
1673 PL_preambleav = newAV();
1674 av_push(PL_preambleav, sv);
1677 croak("No space allowed after -%c", *(s-1));
1689 PL_doswitches = TRUE;
1694 croak("Too late for \"-T\" option");
1698 PL_do_undump = TRUE;
1706 #if defined(SUBVERSION) && SUBVERSION > 0
1707 printf("\nThis is perl, version 5.%03d_%02d built for %s",
1708 PATCHLEVEL, SUBVERSION, ARCHNAME);
1710 printf("\nThis is perl, version %s built for %s",
1711 PL_patchlevel, ARCHNAME);
1713 #if defined(LOCAL_PATCH_COUNT)
1714 if (LOCAL_PATCH_COUNT > 0)
1715 printf("\n(with %d registered patch%s, see perl -V for more detail)",
1716 LOCAL_PATCH_COUNT, (LOCAL_PATCH_COUNT!=1) ? "es" : "");
1719 printf("\n\nCopyright 1987-1998, Larry Wall\n");
1721 printf("\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
1724 printf("djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n");
1725 printf("djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1998\n");
1728 printf("\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
1729 "Version 5 port Copyright (c) 1994-1998, Andreas Kaiser, Ilya Zakharevich\n");
1732 printf("atariST series port, ++jrb bammi@cadence.com\n");
1735 printf("BeOS port Copyright Tom Spindler, 1997-1998\n");
1738 printf("MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1998\n");
1741 printf("MVS (OS390) port by Mortice Kern Systems, 1997-1998\n");
1743 #ifdef BINARY_BUILD_NOTICE
1744 BINARY_BUILD_NOTICE;
1747 Perl may be copied only under the terms of either the Artistic License or the\n\
1748 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
1749 Complete documentation for Perl, including FAQ lists, should be found on\n\
1750 this system using `man perl' or `perldoc perl'. If you have access to the\n\
1751 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
1754 if (! (PL_dowarn & G_WARN_ALL_MASK))
1755 PL_dowarn |= G_WARN_ON;
1759 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
1760 compiling.cop_warnings = WARN_ALL ;
1764 PL_dowarn = G_WARN_ALL_OFF;
1765 compiling.cop_warnings = WARN_NONE ;
1770 if (s[1] == '-') /* Additional switches on #! line. */
1781 #ifdef ALTERNATE_SHEBANG
1782 case 'S': /* OS/2 needs -S on "extproc" line. */
1790 croak("Can't emulate -%.1s on #! line",s);
1795 /* compliments of Tom Christiansen */
1797 /* unexec() can be found in the Gnu emacs distribution */
1798 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
1809 prog = newSVpv(BIN_EXP, 0);
1810 sv_catpv(prog, "/perl");
1811 file = newSVpv(PL_origfilename, 0);
1812 sv_catpv(file, ".perldump");
1814 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
1815 /* unexec prints msg to stderr in case of failure */
1816 PerlProc_exit(status);
1819 # include <lib$routines.h>
1820 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
1822 ABORT(); /* for use with undump */
1827 /* initialize curinterp */
1832 #ifdef PERL_OBJECT /* XXX kludge */
1835 PL_chopset = " \n-"; \
1836 PL_copline = NOLINE; \
1837 PL_curcop = &PL_compiling;\
1838 PL_curcopdb = NULL; \
1841 PL_laststatval = -1; \
1842 PL_laststype = OP_STAT; \
1843 PL_maxscream = -1; \
1844 PL_maxsysfd = MAXSYSFD; \
1845 PL_statname = Nullsv; \
1846 PL_tmps_floor = -1; \
1848 PL_op_mask = NULL; \
1850 PL_laststatval = -1; \
1851 PL_laststype = OP_STAT; \
1852 PL_mess_sv = Nullsv; \
1853 PL_splitstr = " "; \
1854 PL_generation = 100; \
1855 PL_exitlist = NULL; \
1856 PL_exitlistlen = 0; \
1858 PL_in_clean_objs = FALSE; \
1859 PL_in_clean_all = FALSE; \
1860 PL_profiledata = NULL; \
1862 PL_rsfp_filters = Nullav; \
1866 # ifdef MULTIPLICITY
1867 # define PERLVAR(var,type)
1868 # define PERLVARI(var,type,init) PL_curinterp->var = init;
1869 # define PERLVARIC(var,type,init) PL_curinterp->var = init;
1870 # include "intrpvar.h"
1871 # ifndef USE_THREADS
1872 # include "thrdvar.h"
1878 # define PERLVAR(var,type)
1879 # define PERLVARI(var,type,init) PL_##var = init;
1880 # define PERLVARIC(var,type,init) PL_##var = init;
1881 # include "intrpvar.h"
1882 # ifndef USE_THREADS
1883 # include "thrdvar.h"
1894 init_main_stash(void)
1899 /* Note that strtab is a rather special HV. Assumptions are made
1900 about not iterating on it, and not adding tie magic to it.
1901 It is properly deallocated in perl_destruct() */
1902 PL_strtab = newHV();
1903 HvSHAREKEYS_off(PL_strtab); /* mandatory */
1904 hv_ksplit(PL_strtab, 512);
1906 PL_curstash = PL_defstash = newHV();
1907 PL_curstname = newSVpv("main",4);
1908 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
1909 SvREFCNT_dec(GvHV(gv));
1910 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
1912 HvNAME(PL_defstash) = savepv("main");
1913 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
1914 GvMULTI_on(PL_incgv);
1915 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
1916 GvMULTI_on(PL_hintgv);
1917 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
1918 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
1919 GvMULTI_on(PL_errgv);
1920 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
1921 GvMULTI_on(PL_replgv);
1922 (void)form("%240s",""); /* Preallocate temp - for immediate signals. */
1923 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
1924 sv_setpvn(ERRSV, "", 0);
1925 PL_curstash = PL_defstash;
1926 PL_compiling.cop_stash = PL_defstash;
1927 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
1928 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
1929 /* We must init $/ before switches are processed. */
1930 sv_setpvn(GvSV(gv_fetchpv("/", TRUE, SVt_PV)), "\n", 1);
1934 open_script(char *scriptname, bool dosearch, SV *sv, int *fdscript)
1942 PL_origfilename = savepv("-e");
1945 /* if find_script() returns, it returns a malloc()-ed value */
1946 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
1948 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
1949 char *s = scriptname + 8;
1950 *fdscript = atoi(s);
1954 scriptname = savepv(s + 1);
1955 Safefree(PL_origfilename);
1956 PL_origfilename = scriptname;
1961 PL_curcop->cop_filegv = gv_fetchfile(PL_origfilename);
1962 if (strEQ(PL_origfilename,"-"))
1964 if (*fdscript >= 0) {
1965 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
1966 #if defined(HAS_FCNTL) && defined(F_SETFD)
1968 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
1971 else if (PL_preprocess) {
1972 char *cpp_cfg = CPPSTDIN;
1973 SV *cpp = newSVpv("",0);
1974 SV *cmd = NEWSV(0,0);
1976 if (strEQ(cpp_cfg, "cppstdin"))
1977 sv_catpvf(cpp, "%s/", BIN_EXP);
1978 sv_catpv(cpp, cpp_cfg);
1981 sv_catpv(sv,PRIVLIB_EXP);
1985 sed %s -e \"/^[^#]/b\" \
1986 -e \"/^#[ ]*include[ ]/b\" \
1987 -e \"/^#[ ]*define[ ]/b\" \
1988 -e \"/^#[ ]*if[ ]/b\" \
1989 -e \"/^#[ ]*ifdef[ ]/b\" \
1990 -e \"/^#[ ]*ifndef[ ]/b\" \
1991 -e \"/^#[ ]*else/b\" \
1992 -e \"/^#[ ]*elif[ ]/b\" \
1993 -e \"/^#[ ]*undef[ ]/b\" \
1994 -e \"/^#[ ]*endif/b\" \
1997 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2000 %s %s -e '/^[^#]/b' \
2001 -e '/^#[ ]*include[ ]/b' \
2002 -e '/^#[ ]*define[ ]/b' \
2003 -e '/^#[ ]*if[ ]/b' \
2004 -e '/^#[ ]*ifdef[ ]/b' \
2005 -e '/^#[ ]*ifndef[ ]/b' \
2006 -e '/^#[ ]*else/b' \
2007 -e '/^#[ ]*elif[ ]/b' \
2008 -e '/^#[ ]*undef[ ]/b' \
2009 -e '/^#[ ]*endif/b' \
2017 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2019 scriptname, cpp, sv, CPPMINUS);
2020 PL_doextract = FALSE;
2021 #ifdef IAMSUID /* actually, this is caught earlier */
2022 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2024 (void)seteuid(PL_uid); /* musn't stay setuid root */
2027 (void)setreuid((Uid_t)-1, PL_uid);
2029 #ifdef HAS_SETRESUID
2030 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2032 PerlProc_setuid(PL_uid);
2036 if (PerlProc_geteuid() != PL_uid)
2037 croak("Can't do seteuid!\n");
2039 #endif /* IAMSUID */
2040 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2044 else if (!*scriptname) {
2045 forbid_setid("program input from stdin");
2046 PL_rsfp = PerlIO_stdin();
2049 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2050 #if defined(HAS_FCNTL) && defined(F_SETFD)
2052 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2057 #ifndef IAMSUID /* in case script is not readable before setuid */
2059 PerlLIO_stat(SvPVX(GvSV(PL_curcop->cop_filegv)),&PL_statbuf) >= 0 &&
2060 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2063 PerlProc_execv(form("%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv);
2064 croak("Can't do setuid\n");
2068 croak("Can't open perl script \"%s\": %s\n",
2069 SvPVX(GvSV(PL_curcop->cop_filegv)), Strerror(errno));
2074 validate_suid(char *validarg, char *scriptname, int fdscript)
2078 /* do we need to emulate setuid on scripts? */
2080 /* This code is for those BSD systems that have setuid #! scripts disabled
2081 * in the kernel because of a security problem. Merely defining DOSUID
2082 * in perl will not fix that problem, but if you have disabled setuid
2083 * scripts in the kernel, this will attempt to emulate setuid and setgid
2084 * on scripts that have those now-otherwise-useless bits set. The setuid
2085 * root version must be called suidperl or sperlN.NNN. If regular perl
2086 * discovers that it has opened a setuid script, it calls suidperl with
2087 * the same argv that it had. If suidperl finds that the script it has
2088 * just opened is NOT setuid root, it sets the effective uid back to the
2089 * uid. We don't just make perl setuid root because that loses the
2090 * effective uid we had before invoking perl, if it was different from the
2093 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2094 * be defined in suidperl only. suidperl must be setuid root. The
2095 * Configure script will set this up for you if you want it.
2102 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2103 croak("Can't stat script \"%s\"",PL_origfilename);
2104 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2108 #ifndef HAS_SETREUID
2109 /* On this access check to make sure the directories are readable,
2110 * there is actually a small window that the user could use to make
2111 * filename point to an accessible directory. So there is a faint
2112 * chance that someone could execute a setuid script down in a
2113 * non-accessible directory. I don't know what to do about that.
2114 * But I don't think it's too important. The manual lies when
2115 * it says access() is useful in setuid programs.
2117 if (PerlLIO_access(SvPVX(GvSV(PL_curcop->cop_filegv)),1)) /*double check*/
2118 croak("Permission denied");
2120 /* If we can swap euid and uid, then we can determine access rights
2121 * with a simple stat of the file, and then compare device and
2122 * inode to make sure we did stat() on the same file we opened.
2123 * Then we just have to make sure he or she can execute it.
2126 struct stat tmpstatbuf;
2130 setreuid(PL_euid,PL_uid) < 0
2133 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2136 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2137 croak("Can't swap uid and euid"); /* really paranoid */
2138 if (PerlLIO_stat(SvPVX(GvSV(PL_curcop->cop_filegv)),&tmpstatbuf) < 0)
2139 croak("Permission denied"); /* testing full pathname here */
2140 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2141 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2142 (void)PerlIO_close(PL_rsfp);
2143 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2144 PerlIO_printf(PL_rsfp,
2145 "User %ld tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2146 (Filename of set-id script was %s, uid %ld gid %ld.)\n\nSincerely,\nperl\n",
2147 (long)PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2148 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
2149 SvPVX(GvSV(PL_curcop->cop_filegv)),
2150 (long)PL_statbuf.st_uid, (long)PL_statbuf.st_gid);
2151 (void)PerlProc_pclose(PL_rsfp);
2153 croak("Permission denied\n");
2157 setreuid(PL_uid,PL_euid) < 0
2159 # if defined(HAS_SETRESUID)
2160 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2163 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2164 croak("Can't reswap uid and euid");
2165 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2166 croak("Permission denied\n");
2168 #endif /* HAS_SETREUID */
2169 #endif /* IAMSUID */
2171 if (!S_ISREG(PL_statbuf.st_mode))
2172 croak("Permission denied");
2173 if (PL_statbuf.st_mode & S_IWOTH)
2174 croak("Setuid/gid script is writable by world");
2175 PL_doswitches = FALSE; /* -s is insecure in suid */
2176 PL_curcop->cop_line++;
2177 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2178 strnNE(SvPV(PL_linestr,PL_na),"#!",2) ) /* required even on Sys V */
2179 croak("No #! line");
2180 s = SvPV(PL_linestr,PL_na)+2;
2182 while (!isSPACE(*s)) s++;
2183 for (s2 = s; (s2 > SvPV(PL_linestr,PL_na)+2 &&
2184 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2185 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2186 croak("Not a perl script");
2187 while (*s == ' ' || *s == '\t') s++;
2189 * #! arg must be what we saw above. They can invoke it by
2190 * mentioning suidperl explicitly, but they may not add any strange
2191 * arguments beyond what #! says if they do invoke suidperl that way.
2193 len = strlen(validarg);
2194 if (strEQ(validarg," PHOOEY ") ||
2195 strnNE(s,validarg,len) || !isSPACE(s[len]))
2196 croak("Args must match #! line");
2199 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2200 PL_euid == PL_statbuf.st_uid)
2202 croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2203 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2204 #endif /* IAMSUID */
2206 if (PL_euid) { /* oops, we're not the setuid root perl */
2207 (void)PerlIO_close(PL_rsfp);
2210 PerlProc_execv(form("%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv);
2212 croak("Can't do setuid\n");
2215 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2217 (void)setegid(PL_statbuf.st_gid);
2220 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2222 #ifdef HAS_SETRESGID
2223 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2225 PerlProc_setgid(PL_statbuf.st_gid);
2229 if (PerlProc_getegid() != PL_statbuf.st_gid)
2230 croak("Can't do setegid!\n");
2232 if (PL_statbuf.st_mode & S_ISUID) {
2233 if (PL_statbuf.st_uid != PL_euid)
2235 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2238 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2240 #ifdef HAS_SETRESUID
2241 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2243 PerlProc_setuid(PL_statbuf.st_uid);
2247 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2248 croak("Can't do seteuid!\n");
2250 else if (PL_uid) { /* oops, mustn't run as root */
2252 (void)seteuid((Uid_t)PL_uid);
2255 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2257 #ifdef HAS_SETRESUID
2258 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2260 PerlProc_setuid((Uid_t)PL_uid);
2264 if (PerlProc_geteuid() != PL_uid)
2265 croak("Can't do seteuid!\n");
2268 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2269 croak("Permission denied\n"); /* they can't do this */
2272 else if (PL_preprocess)
2273 croak("-P not allowed for setuid/setgid script\n");
2274 else if (fdscript >= 0)
2275 croak("fd script not allowed in suidperl\n");
2277 croak("Script is not setuid/setgid in suidperl\n");
2279 /* We absolutely must clear out any saved ids here, so we */
2280 /* exec the real perl, substituting fd script for scriptname. */
2281 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2282 PerlIO_rewind(PL_rsfp);
2283 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2284 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2285 if (!PL_origargv[which])
2286 croak("Permission denied");
2287 PL_origargv[which] = savepv(form("/dev/fd/%d/%s",
2288 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
2289 #if defined(HAS_FCNTL) && defined(F_SETFD)
2290 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
2292 PerlProc_execv(form("%s/perl%s", BIN_EXP, PL_patchlevel), PL_origargv);/* try again */
2293 croak("Can't do setuid\n");
2294 #endif /* IAMSUID */
2296 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
2297 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
2299 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
2300 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
2302 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
2305 croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2306 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2307 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
2308 /* not set-id, must be wrapped */
2314 find_beginning(void)
2316 register char *s, *s2;
2318 /* skip forward in input to the real script? */
2321 while (PL_doextract) {
2322 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
2323 croak("No Perl script found in input\n");
2324 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
2325 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
2326 PL_doextract = FALSE;
2327 while (*s && !(isSPACE (*s) || *s == '#')) s++;
2329 while (*s == ' ' || *s == '\t') s++;
2331 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
2332 if (strnEQ(s2-4,"perl",4))
2334 while (s = moreswitches(s)) ;
2336 if (PL_cddir && PerlDir_chdir(PL_cddir) < 0)
2337 croak("Can't chdir to %s",PL_cddir);
2346 PL_uid = (int)PerlProc_getuid();
2347 PL_euid = (int)PerlProc_geteuid();
2348 PL_gid = (int)PerlProc_getgid();
2349 PL_egid = (int)PerlProc_getegid();
2351 PL_uid |= PL_gid << 16;
2352 PL_euid |= PL_egid << 16;
2354 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
2358 forbid_setid(char *s)
2360 if (PL_euid != PL_uid)
2361 croak("No %s allowed while running setuid", s);
2362 if (PL_egid != PL_gid)
2363 croak("No %s allowed while running setgid", s);
2370 PL_curstash = PL_debstash;
2371 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
2372 AvREAL_off(PL_dbargs);
2373 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
2374 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
2375 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
2376 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
2377 sv_setiv(PL_DBsingle, 0);
2378 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
2379 sv_setiv(PL_DBtrace, 0);
2380 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
2381 sv_setiv(PL_DBsignal, 0);
2382 PL_curstash = PL_defstash;
2385 #ifndef STRESS_REALLOC
2386 #define REASONABLE(size) (size)
2388 #define REASONABLE(size) (1) /* unreasonable */
2392 init_stacks(ARGSproto)
2394 /* start with 128-item stack and 8K cxstack */
2395 PL_curstackinfo = new_stackinfo(REASONABLE(128),
2396 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
2397 PL_curstackinfo->si_type = PERLSI_MAIN;
2398 PL_curstack = PL_curstackinfo->si_stack;
2399 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
2401 PL_stack_base = AvARRAY(PL_curstack);
2402 PL_stack_sp = PL_stack_base;
2403 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
2405 New(50,PL_tmps_stack,REASONABLE(128),SV*);
2408 PL_tmps_max = REASONABLE(128);
2410 New(54,PL_markstack,REASONABLE(32),I32);
2411 PL_markstack_ptr = PL_markstack;
2412 PL_markstack_max = PL_markstack + REASONABLE(32);
2416 New(54,PL_scopestack,REASONABLE(32),I32);
2417 PL_scopestack_ix = 0;
2418 PL_scopestack_max = REASONABLE(32);
2420 New(54,PL_savestack,REASONABLE(128),ANY);
2421 PL_savestack_ix = 0;
2422 PL_savestack_max = REASONABLE(128);
2424 New(54,PL_retstack,REASONABLE(16),OP*);
2426 PL_retstack_max = REASONABLE(16);
2435 while (PL_curstackinfo->si_next)
2436 PL_curstackinfo = PL_curstackinfo->si_next;
2437 while (PL_curstackinfo) {
2438 PERL_SI *p = PL_curstackinfo->si_prev;
2439 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
2440 Safefree(PL_curstackinfo->si_cxstack);
2441 Safefree(PL_curstackinfo);
2442 PL_curstackinfo = p;
2444 Safefree(PL_tmps_stack);
2445 Safefree(PL_markstack);
2446 Safefree(PL_scopestack);
2447 Safefree(PL_savestack);
2448 Safefree(PL_retstack);
2450 Safefree(PL_debname);
2451 Safefree(PL_debdelim);
2456 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
2467 lex_start(PL_linestr);
2469 PL_subname = newSVpv("main",4);
2473 init_predump_symbols(void)
2479 sv_setpvn(perl_get_sv("\"", TRUE), " ", 1);
2480 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
2481 GvMULTI_on(PL_stdingv);
2482 IoIFP(GvIOp(PL_stdingv)) = PerlIO_stdin();
2483 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
2485 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(PL_stdingv));
2487 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
2489 IoOFP(GvIOp(tmpgv)) = IoIFP(GvIOp(tmpgv)) = PerlIO_stdout();
2491 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
2493 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(PL_defoutgv));
2495 othergv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
2496 GvMULTI_on(othergv);
2497 IoOFP(GvIOp(othergv)) = IoIFP(GvIOp(othergv)) = PerlIO_stderr();
2498 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
2500 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(othergv));
2502 PL_statname = NEWSV(66,0); /* last filename we did stat on */
2505 PL_osname = savepv(OSNAME);
2509 init_postdump_symbols(register int argc, register char **argv, register char **env)
2516 argc--,argv++; /* skip name of script */
2517 if (PL_doswitches) {
2518 for (; argc > 0 && **argv == '-'; argc--,argv++) {
2521 if (argv[0][1] == '-') {
2525 if (s = strchr(argv[0], '=')) {
2527 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
2530 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
2533 PL_toptarget = NEWSV(0,0);
2534 sv_upgrade(PL_toptarget, SVt_PVFM);
2535 sv_setpvn(PL_toptarget, "", 0);
2536 PL_bodytarget = NEWSV(0,0);
2537 sv_upgrade(PL_bodytarget, SVt_PVFM);
2538 sv_setpvn(PL_bodytarget, "", 0);
2539 PL_formtarget = PL_bodytarget;
2542 if (tmpgv = gv_fetchpv("0",TRUE, SVt_PV)) {
2543 sv_setpv(GvSV(tmpgv),PL_origfilename);
2544 magicname("0", "0", 1);
2546 if (tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))
2547 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
2548 if (PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV)) {
2549 GvMULTI_on(PL_argvgv);
2550 (void)gv_AVadd(PL_argvgv);
2551 av_clear(GvAVn(PL_argvgv));
2552 for (; argc > 0; argc--,argv++) {
2553 av_push(GvAVn(PL_argvgv),newSVpv(argv[0],0));
2556 if (PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV)) {
2558 GvMULTI_on(PL_envgv);
2559 hv = GvHVn(PL_envgv);
2560 hv_magic(hv, PL_envgv, 'E');
2561 #ifndef VMS /* VMS doesn't have environ array */
2562 /* Note that if the supplied env parameter is actually a copy
2563 of the global environ then it may now point to free'd memory
2564 if the environment has been modified since. To avoid this
2565 problem we treat env==NULL as meaning 'use the default'
2570 environ[0] = Nullch;
2571 for (; *env; env++) {
2572 if (!(s = strchr(*env,'=')))
2578 sv = newSVpv(s--,0);
2579 (void)hv_store(hv, *env, s - *env, sv, 0);
2581 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
2582 /* Sins of the RTL. See note in my_setenv(). */
2583 (void)PerlEnv_putenv(savepv(*env));
2587 #ifdef DYNAMIC_ENV_FETCH
2588 HvNAME(hv) = savepv(ENV_HV_NAME);
2592 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
2593 sv_setiv(GvSV(tmpgv), (IV)getpid());
2602 s = PerlEnv_getenv("PERL5LIB");
2606 incpush(PerlEnv_getenv("PERLLIB"), FALSE);
2608 /* Treat PERL5?LIB as a possible search list logical name -- the
2609 * "natural" VMS idiom for a Unix path string. We allow each
2610 * element to be a set of |-separated directories for compatibility.
2614 if (my_trnlnm("PERL5LIB",buf,0))
2615 do { incpush(buf,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
2617 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE);
2621 /* Use the ~-expanded versions of APPLLIB (undocumented),
2622 ARCHLIB PRIVLIB SITEARCH and SITELIB
2625 incpush(APPLLIB_EXP, TRUE);
2629 incpush(ARCHLIB_EXP, FALSE);
2632 #define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
2635 incpush(PRIVLIB_EXP, TRUE);
2637 incpush(PRIVLIB_EXP, FALSE);
2641 incpush(SITEARCH_EXP, FALSE);
2645 incpush(SITELIB_EXP, TRUE);
2647 incpush(SITELIB_EXP, FALSE);
2651 incpush(".", FALSE);
2655 # define PERLLIB_SEP ';'
2658 # define PERLLIB_SEP '|'
2660 # define PERLLIB_SEP ':'
2663 #ifndef PERLLIB_MANGLE
2664 # define PERLLIB_MANGLE(s,n) (s)
2668 incpush(char *p, int addsubdirs)
2670 SV *subdir = Nullsv;
2676 subdir = sv_newmortal();
2677 if (!PL_archpat_auto) {
2678 STRLEN len = (sizeof(ARCHNAME) + strlen(PL_patchlevel)
2679 + sizeof("//auto"));
2680 New(55, PL_archpat_auto, len, char);
2681 sprintf(PL_archpat_auto, "/%s/%s/auto", ARCHNAME, PL_patchlevel);
2683 for (len = sizeof(ARCHNAME) + 2;
2684 PL_archpat_auto[len] != '\0' && PL_archpat_auto[len] != '/'; len++)
2685 if (PL_archpat_auto[len] == '.') PL_archpat_auto[len] = '_';
2690 /* Break at all separators */
2692 SV *libdir = NEWSV(55,0);
2695 /* skip any consecutive separators */
2696 while ( *p == PERLLIB_SEP ) {
2697 /* Uncomment the next line for PATH semantics */
2698 /* av_push(GvAVn(PL_incgv), newSVpv(".", 1)); */
2702 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
2703 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
2708 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
2709 p = Nullch; /* break out */
2713 * BEFORE pushing libdir onto @INC we may first push version- and
2714 * archname-specific sub-directories.
2717 struct stat tmpstatbuf;
2722 if ((unix = tounixspec_ts(SvPV(libdir,PL_na),Nullch)) != Nullch) {
2724 while (unix[len-1] == '/') len--; /* Cosmetic */
2725 sv_usepvn(libdir,unix,len);
2728 PerlIO_printf(PerlIO_stderr(),
2729 "Failed to unixify @INC element \"%s\"\n",
2730 SvPV(libdir,PL_na));
2732 /* .../archname/version if -d .../archname/version/auto */
2733 sv_setsv(subdir, libdir);
2734 sv_catpv(subdir, PL_archpat_auto);
2735 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2736 S_ISDIR(tmpstatbuf.st_mode))
2737 av_push(GvAVn(PL_incgv),
2738 newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2740 /* .../archname if -d .../archname/auto */
2741 sv_insert(subdir, SvCUR(libdir) + sizeof(ARCHNAME),
2742 strlen(PL_patchlevel) + 1, "", 0);
2743 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2744 S_ISDIR(tmpstatbuf.st_mode))
2745 av_push(GvAVn(PL_incgv),
2746 newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2749 /* finally push this lib directory on the end of @INC */
2750 av_push(GvAVn(PL_incgv), libdir);
2755 STATIC struct perl_thread *
2758 struct perl_thread *thr;
2761 Newz(53, thr, 1, struct perl_thread);
2762 PL_curcop = &PL_compiling;
2763 thr->cvcache = newHV();
2764 thr->threadsv = newAV();
2765 /* thr->threadsvp is set when find_threadsv is called */
2766 thr->specific = newAV();
2767 thr->errhv = newHV();
2768 thr->flags = THRf_R_JOINABLE;
2769 MUTEX_INIT(&thr->mutex);
2770 /* Handcraft thrsv similarly to mess_sv */
2771 New(53, PL_thrsv, 1, SV);
2772 Newz(53, xpv, 1, XPV);
2773 SvFLAGS(PL_thrsv) = SVt_PV;
2774 SvANY(PL_thrsv) = (void*)xpv;
2775 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
2776 SvPVX(PL_thrsv) = (char*)thr;
2777 SvCUR_set(PL_thrsv, sizeof(thr));
2778 SvLEN_set(PL_thrsv, sizeof(thr));
2779 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
2780 thr->oursv = PL_thrsv;
2781 PL_chopset = " \n-";
2783 MUTEX_LOCK(&PL_threads_mutex);
2788 MUTEX_UNLOCK(&PL_threads_mutex);
2790 #ifdef HAVE_THREAD_INTERN
2791 init_thread_intern(thr);
2794 #ifdef SET_THREAD_SELF
2795 SET_THREAD_SELF(thr);
2797 thr->self = pthread_self();
2798 #endif /* SET_THREAD_SELF */
2802 * These must come after the SET_THR because sv_setpvn does
2803 * SvTAINT and the taint fields require dTHR.
2805 PL_toptarget = NEWSV(0,0);
2806 sv_upgrade(PL_toptarget, SVt_PVFM);
2807 sv_setpvn(PL_toptarget, "", 0);
2808 PL_bodytarget = NEWSV(0,0);
2809 sv_upgrade(PL_bodytarget, SVt_PVFM);
2810 sv_setpvn(PL_bodytarget, "", 0);
2811 PL_formtarget = PL_bodytarget;
2812 thr->errsv = newSVpv("", 0);
2813 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
2816 PL_regcompp = FUNC_NAME_TO_PTR(pregcomp);
2817 PL_regexecp = FUNC_NAME_TO_PTR(regexec_flags);
2819 PL_reginterp_cnt = 0;
2823 #endif /* USE_THREADS */
2826 call_list(I32 oldscope, AV *paramList)
2829 line_t oldline = PL_curcop->cop_line;
2834 while (AvFILL(paramList) >= 0) {
2835 CV *cv = (CV*)av_shift(paramList);
2843 PUSHMARK(PL_stack_sp);
2844 perl_call_sv((SV*)cv, G_EVAL|G_DISCARD);
2845 (void)SvPV(atsv, len);
2848 PL_curcop = &PL_compiling;
2849 PL_curcop->cop_line = oldline;
2850 if (paramList == PL_beginav)
2851 sv_catpv(atsv, "BEGIN failed--compilation aborted");
2853 sv_catpv(atsv, "END failed--cleanup aborted");
2854 while (PL_scopestack_ix > oldscope)
2856 croak("%s", SvPVX(atsv));
2864 /* my_exit() was called */
2865 while (PL_scopestack_ix > oldscope)
2868 PL_curstash = PL_defstash;
2870 call_list(oldscope, PL_endav);
2872 PL_curcop = &PL_compiling;
2873 PL_curcop->cop_line = oldline;
2874 if (PL_statusvalue) {
2875 if (paramList == PL_beginav)
2876 croak("BEGIN failed--compilation aborted");
2878 croak("END failed--cleanup aborted");
2883 if (!PL_restartop) {
2884 PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
2889 PL_curcop = &PL_compiling;
2890 PL_curcop->cop_line = oldline;
2902 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
2903 thr, (unsigned long) status));
2912 STATUS_NATIVE_SET(status);
2919 my_failure_exit(void)
2922 if (vaxc$errno & 1) {
2923 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
2924 STATUS_NATIVE_SET(44);
2927 if (!vaxc$errno && errno) /* unlikely */
2928 STATUS_NATIVE_SET(44);
2930 STATUS_NATIVE_SET(vaxc$errno);
2935 STATUS_POSIX_SET(errno);
2937 exitstatus = STATUS_POSIX >> 8;
2938 if (exitstatus & 255)
2939 STATUS_POSIX_SET(exitstatus);
2941 STATUS_POSIX_SET(255);
2951 register PERL_CONTEXT *cx;
2956 SvREFCNT_dec(PL_e_script);
2957 PL_e_script = Nullsv;
2960 POPSTACK_TO(PL_mainstack);
2961 if (cxstack_ix >= 0) {
2964 POPBLOCK(cx,PL_curpm);
2973 #endif /* PERL_OBJECT */
2979 read_e_script(CPerlObj *pPerl, int idx, SV *buf_sv, int maxlen)
2981 read_e_script(int idx, SV *buf_sv, int maxlen)
2985 p = SvPVX(PL_e_script);
2986 nl = strchr(p, '\n');
2987 nl = (nl) ? nl+1 : SvEND(PL_e_script);
2989 filter_del(read_e_script);
2992 sv_catpvn(buf_sv, p, nl-p);
2993 sv_chop(PL_e_script, nl);