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;
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_strtab_mutex);
555 MUTEX_DESTROY(&PL_sv_mutex);
556 MUTEX_DESTROY(&PL_eval_mutex);
557 COND_DESTROY(&PL_eval_cond);
559 /* As the penultimate thing, free the non-arena SV for thrsv */
560 Safefree(SvPVX(PL_thrsv));
561 Safefree(SvANY(PL_thrsv));
564 #endif /* USE_THREADS */
566 /* As the absolutely last thing, free the non-arena SV for mess() */
569 /* it could have accumulated taint magic */
570 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
573 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
574 moremagic = mg->mg_moremagic;
575 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
576 Safefree(mg->mg_ptr);
580 /* we know that type >= SVt_PV */
581 SvOOK_off(PL_mess_sv);
582 Safefree(SvPVX(PL_mess_sv));
583 Safefree(SvANY(PL_mess_sv));
584 Safefree(PL_mess_sv);
591 CPerlObj::perl_free(void)
593 perl_free(PerlInterpreter *sv_interp)
599 if (!(PL_curinterp = sv_interp))
607 CPerlObj::perl_atexit(void (*fn) (CPerlObj*,void *), void *ptr)
609 perl_atexit(void (*fn) (void *), void *ptr)
612 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
613 PL_exitlist[PL_exitlistlen].fn = fn;
614 PL_exitlist[PL_exitlistlen].ptr = ptr;
620 CPerlObj::perl_parse(void (*xsinit) (CPerlObj*), int argc, char **argv, char **env)
622 perl_parse(PerlInterpreter *sv_interp, void (*xsinit) (void), int argc, char **argv, char **env)
628 char *scriptname = NULL;
629 VOL bool dosearch = FALSE;
637 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
640 croak("suidperl is no longer needed since the kernel can now execute\n\
641 setuid perl scripts securely.\n");
646 if (!(PL_curinterp = sv_interp))
650 #if defined(NeXT) && defined(__DYNAMIC__)
651 _dyld_lookup_and_bind
652 ("__environ", (unsigned long *) &environ_pointer, NULL);
657 #ifndef VMS /* VMS doesn't have environ array */
658 PL_origenviron = environ;
663 /* Come here if running an undumped a.out. */
665 PL_origfilename = savepv(argv[0]);
666 PL_do_undump = FALSE;
667 cxstack_ix = -1; /* start label stack again */
669 init_postdump_symbols(argc,argv,env);
674 PL_curpad = AvARRAY(PL_comppad);
675 op_free(PL_main_root);
676 PL_main_root = Nullop;
678 PL_main_start = Nullop;
679 SvREFCNT_dec(PL_main_cv);
683 oldscope = PL_scopestack_ix;
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 ";
742 if (s = moreswitches(s))
752 if (PL_euid != PL_uid || PL_egid != PL_gid)
753 croak("No -e allowed in setuid scripts");
755 PL_e_script = newSVpv("",0);
756 filter_add(read_e_script, NULL);
759 sv_catpv(PL_e_script, s);
761 sv_catpv(PL_e_script, argv[1]);
765 croak("No code specified for -e");
766 sv_catpv(PL_e_script, "\n");
769 case 'I': /* -I handled both here and in moreswitches() */
771 if (!*++s && (s=argv[1]) != Nullch) {
774 while (s && isSPACE(*s))
778 for (e = s; *e && !isSPACE(*e); e++) ;
785 } /* XXX else croak? */
789 PL_preprocess = TRUE;
799 PL_preambleav = newAV();
800 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
802 PL_Sv = newSVpv("print myconfig();",0);
804 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
806 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
808 #if defined(DEBUGGING) || defined(NO_EMBED) || defined(MULTIPLICITY)
809 sv_catpv(PL_Sv,"\" Compile-time options:");
811 sv_catpv(PL_Sv," DEBUGGING");
814 sv_catpv(PL_Sv," NO_EMBED");
817 sv_catpv(PL_Sv," MULTIPLICITY");
819 sv_catpv(PL_Sv,"\\n\",");
821 #if defined(LOCAL_PATCH_COUNT)
822 if (LOCAL_PATCH_COUNT > 0) {
824 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
825 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
826 if (PL_localpatches[i])
827 sv_catpvf(PL_Sv,"\" \\t%s\\n\",",PL_localpatches[i]);
831 sv_catpvf(PL_Sv,"\" Built under %s\\n\"",OSNAME);
834 sv_catpvf(PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
836 sv_catpvf(PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
841 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
842 print \" \\%ENV:\\n @env\\n\" if @env; \
843 print \" \\@INC:\\n @INC\\n\";");
846 PL_Sv = newSVpv("config_vars(qw(",0);
847 sv_catpv(PL_Sv, ++s);
848 sv_catpv(PL_Sv, "))");
851 av_push(PL_preambleav, PL_Sv);
852 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
858 PL_cddir = savepv(s);
863 if (!*++s || isSPACE(*s)) {
867 /* catch use of gnu style long options */
868 if (strEQ(s, "version")) {
872 if (strEQ(s, "help")) {
879 croak("Unrecognized switch: -%s (-h will show valid options)",s);
884 if (!PL_tainting && (s = PerlEnv_getenv("PERL5OPT"))) {
895 if (!strchr("DIMUdmw", *s))
896 croak("Illegal switch in PERL5OPT: -%c", *s);
902 scriptname = argv[0];
905 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
907 else if (scriptname == Nullch) {
909 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
917 open_script(scriptname,dosearch,sv,&fdscript);
919 validate_suid(validarg, scriptname,fdscript);
924 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
925 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
926 CvUNIQUE_on(PL_compcv);
928 PL_comppad = newAV();
929 av_push(PL_comppad, Nullsv);
930 PL_curpad = AvARRAY(PL_comppad);
931 PL_comppad_name = newAV();
932 PL_comppad_name_fill = 0;
933 PL_min_intro_pending = 0;
936 av_store(PL_comppad_name, 0, newSVpv("@_", 2));
937 PL_curpad[0] = (SV*)newAV();
938 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
939 CvOWNER(PL_compcv) = 0;
940 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
941 MUTEX_INIT(CvMUTEXP(PL_compcv));
942 #endif /* USE_THREADS */
944 comppadlist = newAV();
945 AvREAL_off(comppadlist);
946 av_store(comppadlist, 0, (SV*)PL_comppad_name);
947 av_store(comppadlist, 1, (SV*)PL_comppad);
948 CvPADLIST(PL_compcv) = comppadlist;
950 boot_core_UNIVERSAL();
953 (*xsinit)(PERL_OBJECT_THIS); /* in case linked C routines want magical variables */
954 #if defined(VMS) || defined(WIN32) || defined(DJGPP)
958 init_predump_symbols();
959 /* init_postdump_symbols not currently designed to be called */
960 /* more than once (ENV isn't cleared first, for example) */
961 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
963 init_postdump_symbols(argc,argv,env);
967 /* now parse the script */
969 SETERRNO(0,SS$_NORMAL);
971 if (yyparse() || PL_error_count) {
973 croak("%s had compilation errors.\n", PL_origfilename);
975 croak("Execution of %s aborted due to compilation errors.\n",
979 PL_curcop->cop_line = 0;
980 PL_curstash = PL_defstash;
981 PL_preprocess = FALSE;
983 SvREFCNT_dec(PL_e_script);
984 PL_e_script = Nullsv;
987 /* now that script is parsed, we can modify record separator */
989 PL_rs = SvREFCNT_inc(PL_nrs);
990 sv_setsv(perl_get_sv("/", TRUE), PL_rs);
995 gv_check(PL_defstash);
1001 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1002 dump_mstats("after compilation:");
1013 CPerlObj::perl_run(void)
1015 perl_run(PerlInterpreter *sv_interp)
1024 if (!(PL_curinterp = sv_interp))
1028 oldscope = PL_scopestack_ix;
1033 cxstack_ix = -1; /* start context stack again */
1036 /* my_exit() was called */
1037 while (PL_scopestack_ix > oldscope)
1040 PL_curstash = PL_defstash;
1042 call_list(oldscope, PL_endav);
1044 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1045 dump_mstats("after execution: ");
1048 return STATUS_NATIVE_EXPORT;
1050 if (!PL_restartop) {
1051 PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
1056 POPSTACK_TO(PL_mainstack);
1060 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1061 PL_sawampersand ? "Enabling" : "Omitting"));
1063 if (!PL_restartop) {
1064 DEBUG_x(dump_all());
1065 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1066 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%lx\n",
1067 (unsigned long) thr));
1070 PerlIO_printf(PerlIO_stderr(), "%s syntax OK\n", PL_origfilename);
1073 if (PERLDB_SINGLE && PL_DBsingle)
1074 sv_setiv(PL_DBsingle, 1);
1076 call_list(oldscope, PL_initav);
1082 PL_op = PL_restartop;
1086 else if (PL_main_start) {
1087 CvDEPTH(PL_main_cv) = 1;
1088 PL_op = PL_main_start;
1098 perl_get_sv(char *name, I32 create)
1102 if (name[1] == '\0' && !isALPHA(name[0])) {
1103 PADOFFSET tmp = find_threadsv(name);
1104 if (tmp != NOT_IN_PAD) {
1106 return THREADSV(tmp);
1109 #endif /* USE_THREADS */
1110 gv = gv_fetchpv(name, create, SVt_PV);
1117 perl_get_av(char *name, I32 create)
1119 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1128 perl_get_hv(char *name, I32 create)
1130 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1139 perl_get_cv(char *name, I32 create)
1141 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1142 if (create && !GvCVu(gv))
1143 return newSUB(start_subparse(FALSE, 0),
1144 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1152 /* Be sure to refetch the stack pointer after calling these routines. */
1155 perl_call_argv(char *sub_name, I32 flags, register char **argv)
1157 /* See G_* flags in cop.h */
1158 /* null terminated arg list */
1165 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1170 return perl_call_pv(sub_name, flags);
1174 perl_call_pv(char *sub_name, I32 flags)
1175 /* name of the subroutine */
1176 /* See G_* flags in cop.h */
1178 return perl_call_sv((SV*)perl_get_cv(sub_name, TRUE), flags);
1182 perl_call_method(char *methname, I32 flags)
1183 /* name of the subroutine */
1184 /* See G_* flags in cop.h */
1190 XPUSHs(sv_2mortal(newSVpv(methname,0)));
1195 return perl_call_sv(*PL_stack_sp--, flags);
1198 /* May be called with any of a CV, a GV, or an SV containing the name. */
1200 perl_call_sv(SV *sv, I32 flags)
1202 /* See G_* flags in cop.h */
1205 LOGOP myop; /* fake syntax tree node */
1209 bool oldcatch = CATCH_GET;
1214 if (flags & G_DISCARD) {
1219 Zero(&myop, 1, LOGOP);
1220 myop.op_next = Nullop;
1221 if (!(flags & G_NOARGS))
1222 myop.op_flags |= OPf_STACKED;
1223 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1224 (flags & G_ARRAY) ? OPf_WANT_LIST :
1229 EXTEND(PL_stack_sp, 1);
1230 *++PL_stack_sp = sv;
1232 oldscope = PL_scopestack_ix;
1234 if (PERLDB_SUB && PL_curstash != PL_debstash
1235 /* Handle first BEGIN of -d. */
1236 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1237 /* Try harder, since this may have been a sighandler, thus
1238 * curstash may be meaningless. */
1239 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1240 && !(flags & G_NODEBUG))
1241 PL_op->op_private |= OPpENTERSUB_DB;
1243 if (flags & G_EVAL) {
1244 cLOGOP->op_other = PL_op;
1246 /* we're trying to emulate pp_entertry() here */
1248 register PERL_CONTEXT *cx;
1249 I32 gimme = GIMME_V;
1254 push_return(PL_op->op_next);
1255 PUSHBLOCK(cx, CXt_EVAL, PL_stack_sp);
1257 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1260 if (flags & G_KEEPERR)
1275 /* my_exit() was called */
1276 PL_curstash = PL_defstash;
1280 croak("Callback called exit");
1285 PL_op = PL_restartop;
1289 PL_stack_sp = PL_stack_base + oldmark;
1290 if (flags & G_ARRAY)
1294 *++PL_stack_sp = &PL_sv_undef;
1302 if (PL_op == (OP*)&myop)
1303 PL_op = pp_entersub(ARGS);
1306 retval = PL_stack_sp - (PL_stack_base + oldmark);
1307 if ((flags & G_EVAL) && !(flags & G_KEEPERR))
1311 if (flags & G_EVAL) {
1312 if (PL_scopestack_ix > oldscope) {
1316 register PERL_CONTEXT *cx;
1328 CATCH_SET(oldcatch);
1330 if (flags & G_DISCARD) {
1331 PL_stack_sp = PL_stack_base + oldmark;
1340 /* Eval a string. The G_EVAL flag is always assumed. */
1343 perl_eval_sv(SV *sv, I32 flags)
1345 /* See G_* flags in cop.h */
1348 UNOP myop; /* fake syntax tree node */
1349 I32 oldmark = SP - PL_stack_base;
1356 if (flags & G_DISCARD) {
1363 Zero(PL_op, 1, UNOP);
1364 EXTEND(PL_stack_sp, 1);
1365 *++PL_stack_sp = sv;
1366 oldscope = PL_scopestack_ix;
1368 if (!(flags & G_NOARGS))
1369 myop.op_flags = OPf_STACKED;
1370 myop.op_next = Nullop;
1371 myop.op_type = OP_ENTEREVAL;
1372 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1373 (flags & G_ARRAY) ? OPf_WANT_LIST :
1375 if (flags & G_KEEPERR)
1376 myop.op_flags |= OPf_SPECIAL;
1386 /* my_exit() was called */
1387 PL_curstash = PL_defstash;
1391 croak("Callback called exit");
1396 PL_op = PL_restartop;
1400 PL_stack_sp = PL_stack_base + oldmark;
1401 if (flags & G_ARRAY)
1405 *++PL_stack_sp = &PL_sv_undef;
1410 if (PL_op == (OP*)&myop)
1411 PL_op = pp_entereval(ARGS);
1414 retval = PL_stack_sp - (PL_stack_base + oldmark);
1415 if (!(flags & G_KEEPERR))
1420 if (flags & G_DISCARD) {
1421 PL_stack_sp = PL_stack_base + oldmark;
1431 perl_eval_pv(char *p, I32 croak_on_error)
1434 SV* sv = newSVpv(p, 0);
1437 perl_eval_sv(sv, G_SCALAR);
1444 if (croak_on_error && SvTRUE(ERRSV))
1445 croak(SvPVx(ERRSV, PL_na));
1450 /* Require a module. */
1453 perl_require_pv(char *pv)
1457 PUSHSTACKi(PERLSI_REQUIRE);
1459 sv = sv_newmortal();
1460 sv_setpv(sv, "require '");
1463 perl_eval_sv(sv, G_DISCARD);
1469 magicname(char *sym, char *name, I32 namlen)
1473 if (gv = gv_fetchpv(sym,TRUE, SVt_PV))
1474 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1478 usage(char *name) /* XXX move this out into a module ? */
1481 /* This message really ought to be max 23 lines.
1482 * Removed -h because the user already knows that opton. Others? */
1484 static char *usage_msg[] = {
1485 "-0[octal] specify record separator (\\0, if no argument)",
1486 "-a autosplit mode with -n or -p (splits $_ into @F)",
1487 "-c check syntax only (runs BEGIN and END blocks)",
1488 "-d[:debugger] run scripts under debugger",
1489 "-D[number/list] set debugging flags (argument is a bit mask or flags)",
1490 "-e 'command' one line of script. Several -e's allowed. Omit [programfile].",
1491 "-F/pattern/ split() pattern for autosplit (-a). The //'s are optional.",
1492 "-i[extension] edit <> files in place (make backup if extension supplied)",
1493 "-Idirectory specify @INC/#include directory (may be used more than once)",
1494 "-l[octal] enable line ending processing, specifies line terminator",
1495 "-[mM][-]module.. executes `use/no module...' before executing your script.",
1496 "-n assume 'while (<>) { ... }' loop around your script",
1497 "-p assume loop like -n but print line also like sed",
1498 "-P run script through C preprocessor before compilation",
1499 "-s enable some switch parsing for switches after script name",
1500 "-S look for the script using PATH environment variable",
1501 "-T turn on tainting checks",
1502 "-u dump core after parsing script",
1503 "-U allow unsafe operations",
1504 "-v print version number, patchlevel plus VERY IMPORTANT perl info",
1505 "-V[:variable] print perl configuration information",
1506 "-w TURN WARNINGS ON FOR COMPILATION OF YOUR SCRIPT. Recommended.",
1507 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
1511 char **p = usage_msg;
1513 printf("\nUsage: %s [switches] [--] [programfile] [arguments]", name);
1515 printf("\n %s", *p++);
1518 /* This routine handles any switches that can be given during run */
1521 moreswitches(char *s)
1530 rschar = scan_oct(s, 4, &numlen);
1531 SvREFCNT_dec(PL_nrs);
1532 if (rschar & ~((U8)~0))
1533 PL_nrs = &PL_sv_undef;
1534 else if (!rschar && numlen >= 2)
1535 PL_nrs = newSVpv("", 0);
1538 PL_nrs = newSVpv(&ch, 1);
1544 PL_splitstr = savepv(s + 1);
1558 if (*s == ':' || *s == '=') {
1559 my_setenv("PERL5DB", form("use Devel::%s;", ++s));
1563 PL_perldb = PERLDB_ALL;
1570 if (isALPHA(s[1])) {
1571 static char debopts[] = "psltocPmfrxuLHXDS";
1574 for (s++; *s && (d = strchr(debopts,*s)); s++)
1575 PL_debug |= 1 << (d - debopts);
1578 PL_debug = atoi(s+1);
1579 for (s++; isDIGIT(*s); s++) ;
1581 PL_debug |= 0x80000000;
1583 warn("Recompile perl with -DDEBUGGING to use -D switch\n");
1584 for (s++; isALNUM(*s); s++) ;
1589 usage(PL_origargv[0]);
1593 Safefree(PL_inplace);
1594 PL_inplace = savepv(s+1);
1596 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
1599 if (*s == '-') /* Additional switches on #! line. */
1603 case 'I': /* -I handled both here and in parse_perl() */
1606 while (*s && isSPACE(*s))
1610 for (e = s; *e && !isSPACE(*e); e++) ;
1611 p = savepvn(s, e-s);
1617 croak("No space allowed after -I");
1625 PL_ors = savepv("\n");
1627 *PL_ors = scan_oct(s, 3 + (*s == '0'), &numlen);
1632 if (RsPARA(PL_nrs)) {
1637 PL_ors = SvPV(PL_nrs, PL_orslen);
1638 PL_ors = savepvn(PL_ors, PL_orslen);
1642 forbid_setid("-M"); /* XXX ? */
1645 forbid_setid("-m"); /* XXX ? */
1650 /* -M-foo == 'no foo' */
1651 if (*s == '-') { use = "no "; ++s; }
1652 sv = newSVpv(use,0);
1654 /* We allow -M'Module qw(Foo Bar)' */
1655 while(isALNUM(*s) || *s==':') ++s;
1657 sv_catpv(sv, start);
1658 if (*(start-1) == 'm') {
1660 croak("Can't use '%c' after -mname", *s);
1661 sv_catpv( sv, " ()");
1664 sv_catpvn(sv, start, s-start);
1665 sv_catpv(sv, " split(/,/,q{");
1670 if (PL_preambleav == NULL)
1671 PL_preambleav = newAV();
1672 av_push(PL_preambleav, sv);
1675 croak("No space allowed after -%c", *(s-1));
1687 PL_doswitches = TRUE;
1692 croak("Too late for \"-T\" option");
1696 PL_do_undump = TRUE;
1704 #if defined(SUBVERSION) && SUBVERSION > 0
1705 printf("\nThis is perl, version 5.%03d_%02d built for %s",
1706 PATCHLEVEL, SUBVERSION, ARCHNAME);
1708 printf("\nThis is perl, version %s built for %s",
1709 PL_patchlevel, ARCHNAME);
1711 #if defined(LOCAL_PATCH_COUNT)
1712 if (LOCAL_PATCH_COUNT > 0)
1713 printf("\n(with %d registered patch%s, see perl -V for more detail)",
1714 LOCAL_PATCH_COUNT, (LOCAL_PATCH_COUNT!=1) ? "es" : "");
1717 printf("\n\nCopyright 1987-1998, Larry Wall\n");
1719 printf("\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
1722 printf("djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n");
1723 printf("djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1998\n");
1726 printf("\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
1727 "Version 5 port Copyright (c) 1994-1998, Andreas Kaiser, Ilya Zakharevich\n");
1730 printf("atariST series port, ++jrb bammi@cadence.com\n");
1733 printf("BeOS port Copyright Tom Spindler, 1997-1998\n");
1736 printf("MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1998\n");
1739 printf("MVS (OS390) port by Mortice Kern Systems, 1997-1998\n");
1742 printf("Stratus VOS port by Paul_Green@stratus.com, 1997-1998\n");
1744 #ifdef BINARY_BUILD_NOTICE
1745 BINARY_BUILD_NOTICE;
1748 Perl may be copied only under the terms of either the Artistic License or the\n\
1749 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
1750 Complete documentation for Perl, including FAQ lists, should be found on\n\
1751 this system using `man perl' or `perldoc perl'. If you have access to the\n\
1752 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
1760 if (s[1] == '-') /* Additional switches on #! line. */
1765 #if defined(WIN32) || !defined(PERL_STRICT_CR)
1771 #ifdef ALTERNATE_SHEBANG
1772 case 'S': /* OS/2 needs -S on "extproc" line. */
1780 croak("Can't emulate -%.1s on #! line",s);
1785 /* compliments of Tom Christiansen */
1787 /* unexec() can be found in the Gnu emacs distribution */
1788 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
1799 prog = newSVpv(BIN_EXP, 0);
1800 sv_catpv(prog, "/perl");
1801 file = newSVpv(PL_origfilename, 0);
1802 sv_catpv(file, ".perldump");
1804 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
1805 /* unexec prints msg to stderr in case of failure */
1806 PerlProc_exit(status);
1809 # include <lib$routines.h>
1810 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
1812 ABORT(); /* for use with undump */
1817 /* initialize curinterp */
1822 #ifdef PERL_OBJECT /* XXX kludge */
1825 PL_chopset = " \n-"; \
1826 PL_copline = NOLINE; \
1827 PL_curcop = &PL_compiling;\
1828 PL_curcopdb = NULL; \
1831 PL_laststatval = -1; \
1832 PL_laststype = OP_STAT; \
1833 PL_maxscream = -1; \
1834 PL_maxsysfd = MAXSYSFD; \
1835 PL_statname = Nullsv; \
1836 PL_tmps_floor = -1; \
1838 PL_op_mask = NULL; \
1840 PL_laststatval = -1; \
1841 PL_laststype = OP_STAT; \
1842 PL_mess_sv = Nullsv; \
1843 PL_splitstr = " "; \
1844 PL_generation = 100; \
1845 PL_exitlist = NULL; \
1846 PL_exitlistlen = 0; \
1848 PL_in_clean_objs = FALSE; \
1849 PL_in_clean_all = FALSE; \
1850 PL_profiledata = NULL; \
1852 PL_rsfp_filters = Nullav; \
1856 # ifdef MULTIPLICITY
1857 # define PERLVAR(var,type)
1858 # define PERLVARI(var,type,init) PL_curinterp->var = init;
1859 # define PERLVARIC(var,type,init) PL_curinterp->var = init;
1860 # include "intrpvar.h"
1861 # ifndef USE_THREADS
1862 # include "thrdvar.h"
1868 # define PERLVAR(var,type)
1869 # define PERLVARI(var,type,init) PL_##var = init;
1870 # define PERLVARIC(var,type,init) PL_##var = init;
1871 # include "intrpvar.h"
1872 # ifndef USE_THREADS
1873 # include "thrdvar.h"
1884 init_main_stash(void)
1889 /* Note that strtab is a rather special HV. Assumptions are made
1890 about not iterating on it, and not adding tie magic to it.
1891 It is properly deallocated in perl_destruct() */
1892 PL_strtab = newHV();
1894 MUTEX_INIT(&PL_strtab_mutex);
1896 HvSHAREKEYS_off(PL_strtab); /* mandatory */
1897 hv_ksplit(PL_strtab, 512);
1899 PL_curstash = PL_defstash = newHV();
1900 PL_curstname = newSVpv("main",4);
1901 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
1902 SvREFCNT_dec(GvHV(gv));
1903 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
1905 HvNAME(PL_defstash) = savepv("main");
1906 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
1907 GvMULTI_on(PL_incgv);
1908 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
1909 GvMULTI_on(PL_hintgv);
1910 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
1911 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
1912 GvMULTI_on(PL_errgv);
1913 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
1914 GvMULTI_on(PL_replgv);
1915 (void)form("%240s",""); /* Preallocate temp - for immediate signals. */
1916 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
1917 sv_setpvn(ERRSV, "", 0);
1918 PL_curstash = PL_defstash;
1919 PL_compiling.cop_stash = PL_defstash;
1920 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
1921 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
1922 /* We must init $/ before switches are processed. */
1923 sv_setpvn(perl_get_sv("/", TRUE), "\n", 1);
1927 open_script(char *scriptname, bool dosearch, SV *sv, int *fdscript)
1935 PL_origfilename = savepv("-e");
1938 /* if find_script() returns, it returns a malloc()-ed value */
1939 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
1941 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
1942 char *s = scriptname + 8;
1943 *fdscript = atoi(s);
1947 scriptname = savepv(s + 1);
1948 Safefree(PL_origfilename);
1949 PL_origfilename = scriptname;
1954 PL_curcop->cop_filegv = gv_fetchfile(PL_origfilename);
1955 if (strEQ(PL_origfilename,"-"))
1957 if (*fdscript >= 0) {
1958 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
1959 #if defined(HAS_FCNTL) && defined(F_SETFD)
1961 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
1964 else if (PL_preprocess) {
1965 char *cpp_cfg = CPPSTDIN;
1966 SV *cpp = newSVpv("",0);
1967 SV *cmd = NEWSV(0,0);
1969 if (strEQ(cpp_cfg, "cppstdin"))
1970 sv_catpvf(cpp, "%s/", BIN_EXP);
1971 sv_catpv(cpp, cpp_cfg);
1974 sv_catpv(sv,PRIVLIB_EXP);
1978 sed %s -e \"/^[^#]/b\" \
1979 -e \"/^#[ ]*include[ ]/b\" \
1980 -e \"/^#[ ]*define[ ]/b\" \
1981 -e \"/^#[ ]*if[ ]/b\" \
1982 -e \"/^#[ ]*ifdef[ ]/b\" \
1983 -e \"/^#[ ]*ifndef[ ]/b\" \
1984 -e \"/^#[ ]*else/b\" \
1985 -e \"/^#[ ]*elif[ ]/b\" \
1986 -e \"/^#[ ]*undef[ ]/b\" \
1987 -e \"/^#[ ]*endif/b\" \
1990 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
1993 %s %s -e '/^[^#]/b' \
1994 -e '/^#[ ]*include[ ]/b' \
1995 -e '/^#[ ]*define[ ]/b' \
1996 -e '/^#[ ]*if[ ]/b' \
1997 -e '/^#[ ]*ifdef[ ]/b' \
1998 -e '/^#[ ]*ifndef[ ]/b' \
1999 -e '/^#[ ]*else/b' \
2000 -e '/^#[ ]*elif[ ]/b' \
2001 -e '/^#[ ]*undef[ ]/b' \
2002 -e '/^#[ ]*endif/b' \
2010 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2012 scriptname, cpp, sv, CPPMINUS);
2013 PL_doextract = FALSE;
2014 #ifdef IAMSUID /* actually, this is caught earlier */
2015 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2017 (void)seteuid(PL_uid); /* musn't stay setuid root */
2020 (void)setreuid((Uid_t)-1, PL_uid);
2022 #ifdef HAS_SETRESUID
2023 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2025 PerlProc_setuid(PL_uid);
2029 if (PerlProc_geteuid() != PL_uid)
2030 croak("Can't do seteuid!\n");
2032 #endif /* IAMSUID */
2033 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2037 else if (!*scriptname) {
2038 forbid_setid("program input from stdin");
2039 PL_rsfp = PerlIO_stdin();
2042 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2043 #if defined(HAS_FCNTL) && defined(F_SETFD)
2045 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2050 #ifndef IAMSUID /* in case script is not readable before setuid */
2052 PerlLIO_stat(SvPVX(GvSV(PL_curcop->cop_filegv)),&PL_statbuf) >= 0 &&
2053 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2056 PerlProc_execv(form("%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv);
2057 croak("Can't do setuid\n");
2061 croak("Can't open perl script \"%s\": %s\n",
2062 SvPVX(GvSV(PL_curcop->cop_filegv)), Strerror(errno));
2067 validate_suid(char *validarg, char *scriptname, int fdscript)
2071 /* do we need to emulate setuid on scripts? */
2073 /* This code is for those BSD systems that have setuid #! scripts disabled
2074 * in the kernel because of a security problem. Merely defining DOSUID
2075 * in perl will not fix that problem, but if you have disabled setuid
2076 * scripts in the kernel, this will attempt to emulate setuid and setgid
2077 * on scripts that have those now-otherwise-useless bits set. The setuid
2078 * root version must be called suidperl or sperlN.NNN. If regular perl
2079 * discovers that it has opened a setuid script, it calls suidperl with
2080 * the same argv that it had. If suidperl finds that the script it has
2081 * just opened is NOT setuid root, it sets the effective uid back to the
2082 * uid. We don't just make perl setuid root because that loses the
2083 * effective uid we had before invoking perl, if it was different from the
2086 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2087 * be defined in suidperl only. suidperl must be setuid root. The
2088 * Configure script will set this up for you if you want it.
2095 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2096 croak("Can't stat script \"%s\"",PL_origfilename);
2097 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2101 #ifndef HAS_SETREUID
2102 /* On this access check to make sure the directories are readable,
2103 * there is actually a small window that the user could use to make
2104 * filename point to an accessible directory. So there is a faint
2105 * chance that someone could execute a setuid script down in a
2106 * non-accessible directory. I don't know what to do about that.
2107 * But I don't think it's too important. The manual lies when
2108 * it says access() is useful in setuid programs.
2110 if (PerlLIO_access(SvPVX(GvSV(PL_curcop->cop_filegv)),1)) /*double check*/
2111 croak("Permission denied");
2113 /* If we can swap euid and uid, then we can determine access rights
2114 * with a simple stat of the file, and then compare device and
2115 * inode to make sure we did stat() on the same file we opened.
2116 * Then we just have to make sure he or she can execute it.
2119 struct stat tmpstatbuf;
2123 setreuid(PL_euid,PL_uid) < 0
2126 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2129 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2130 croak("Can't swap uid and euid"); /* really paranoid */
2131 if (PerlLIO_stat(SvPVX(GvSV(PL_curcop->cop_filegv)),&tmpstatbuf) < 0)
2132 croak("Permission denied"); /* testing full pathname here */
2133 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2134 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2135 (void)PerlIO_close(PL_rsfp);
2136 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2137 PerlIO_printf(PL_rsfp,
2138 "User %ld tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2139 (Filename of set-id script was %s, uid %ld gid %ld.)\n\nSincerely,\nperl\n",
2140 (long)PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2141 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
2142 SvPVX(GvSV(PL_curcop->cop_filegv)),
2143 (long)PL_statbuf.st_uid, (long)PL_statbuf.st_gid);
2144 (void)PerlProc_pclose(PL_rsfp);
2146 croak("Permission denied\n");
2150 setreuid(PL_uid,PL_euid) < 0
2152 # if defined(HAS_SETRESUID)
2153 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2156 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2157 croak("Can't reswap uid and euid");
2158 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2159 croak("Permission denied\n");
2161 #endif /* HAS_SETREUID */
2162 #endif /* IAMSUID */
2164 if (!S_ISREG(PL_statbuf.st_mode))
2165 croak("Permission denied");
2166 if (PL_statbuf.st_mode & S_IWOTH)
2167 croak("Setuid/gid script is writable by world");
2168 PL_doswitches = FALSE; /* -s is insecure in suid */
2169 PL_curcop->cop_line++;
2170 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2171 strnNE(SvPV(PL_linestr,PL_na),"#!",2) ) /* required even on Sys V */
2172 croak("No #! line");
2173 s = SvPV(PL_linestr,PL_na)+2;
2175 while (!isSPACE(*s)) s++;
2176 for (s2 = s; (s2 > SvPV(PL_linestr,PL_na)+2 &&
2177 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2178 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2179 croak("Not a perl script");
2180 while (*s == ' ' || *s == '\t') s++;
2182 * #! arg must be what we saw above. They can invoke it by
2183 * mentioning suidperl explicitly, but they may not add any strange
2184 * arguments beyond what #! says if they do invoke suidperl that way.
2186 len = strlen(validarg);
2187 if (strEQ(validarg," PHOOEY ") ||
2188 strnNE(s,validarg,len) || !isSPACE(s[len]))
2189 croak("Args must match #! line");
2192 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2193 PL_euid == PL_statbuf.st_uid)
2195 croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2196 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2197 #endif /* IAMSUID */
2199 if (PL_euid) { /* oops, we're not the setuid root perl */
2200 (void)PerlIO_close(PL_rsfp);
2203 PerlProc_execv(form("%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv);
2205 croak("Can't do setuid\n");
2208 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2210 (void)setegid(PL_statbuf.st_gid);
2213 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2215 #ifdef HAS_SETRESGID
2216 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2218 PerlProc_setgid(PL_statbuf.st_gid);
2222 if (PerlProc_getegid() != PL_statbuf.st_gid)
2223 croak("Can't do setegid!\n");
2225 if (PL_statbuf.st_mode & S_ISUID) {
2226 if (PL_statbuf.st_uid != PL_euid)
2228 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2231 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2233 #ifdef HAS_SETRESUID
2234 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2236 PerlProc_setuid(PL_statbuf.st_uid);
2240 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2241 croak("Can't do seteuid!\n");
2243 else if (PL_uid) { /* oops, mustn't run as root */
2245 (void)seteuid((Uid_t)PL_uid);
2248 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2250 #ifdef HAS_SETRESUID
2251 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2253 PerlProc_setuid((Uid_t)PL_uid);
2257 if (PerlProc_geteuid() != PL_uid)
2258 croak("Can't do seteuid!\n");
2261 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2262 croak("Permission denied\n"); /* they can't do this */
2265 else if (PL_preprocess)
2266 croak("-P not allowed for setuid/setgid script\n");
2267 else if (fdscript >= 0)
2268 croak("fd script not allowed in suidperl\n");
2270 croak("Script is not setuid/setgid in suidperl\n");
2272 /* We absolutely must clear out any saved ids here, so we */
2273 /* exec the real perl, substituting fd script for scriptname. */
2274 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2275 PerlIO_rewind(PL_rsfp);
2276 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2277 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2278 if (!PL_origargv[which])
2279 croak("Permission denied");
2280 PL_origargv[which] = savepv(form("/dev/fd/%d/%s",
2281 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
2282 #if defined(HAS_FCNTL) && defined(F_SETFD)
2283 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
2285 PerlProc_execv(form("%s/perl%s", BIN_EXP, PL_patchlevel), PL_origargv);/* try again */
2286 croak("Can't do setuid\n");
2287 #endif /* IAMSUID */
2289 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
2290 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
2292 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
2293 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
2295 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
2298 croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2299 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2300 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
2301 /* not set-id, must be wrapped */
2307 find_beginning(void)
2309 register char *s, *s2;
2311 /* skip forward in input to the real script? */
2314 while (PL_doextract) {
2315 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
2316 croak("No Perl script found in input\n");
2317 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
2318 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
2319 PL_doextract = FALSE;
2320 while (*s && !(isSPACE (*s) || *s == '#')) s++;
2322 while (*s == ' ' || *s == '\t') s++;
2324 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
2325 if (strnEQ(s2-4,"perl",4))
2327 while (s = moreswitches(s)) ;
2329 if (PL_cddir && PerlDir_chdir(PL_cddir) < 0)
2330 croak("Can't chdir to %s",PL_cddir);
2339 PL_uid = (int)PerlProc_getuid();
2340 PL_euid = (int)PerlProc_geteuid();
2341 PL_gid = (int)PerlProc_getgid();
2342 PL_egid = (int)PerlProc_getegid();
2344 PL_uid |= PL_gid << 16;
2345 PL_euid |= PL_egid << 16;
2347 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
2351 forbid_setid(char *s)
2353 if (PL_euid != PL_uid)
2354 croak("No %s allowed while running setuid", s);
2355 if (PL_egid != PL_gid)
2356 croak("No %s allowed while running setgid", s);
2363 PL_curstash = PL_debstash;
2364 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
2365 AvREAL_off(PL_dbargs);
2366 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
2367 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
2368 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
2369 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
2370 sv_setiv(PL_DBsingle, 0);
2371 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
2372 sv_setiv(PL_DBtrace, 0);
2373 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
2374 sv_setiv(PL_DBsignal, 0);
2375 PL_curstash = PL_defstash;
2378 #ifndef STRESS_REALLOC
2379 #define REASONABLE(size) (size)
2381 #define REASONABLE(size) (1) /* unreasonable */
2385 init_stacks(ARGSproto)
2387 /* start with 128-item stack and 8K cxstack */
2388 PL_curstackinfo = new_stackinfo(REASONABLE(128),
2389 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
2390 PL_curstackinfo->si_type = PERLSI_MAIN;
2391 PL_curstack = PL_curstackinfo->si_stack;
2392 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
2394 PL_stack_base = AvARRAY(PL_curstack);
2395 PL_stack_sp = PL_stack_base;
2396 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
2398 New(50,PL_tmps_stack,REASONABLE(128),SV*);
2401 PL_tmps_max = REASONABLE(128);
2403 New(54,PL_markstack,REASONABLE(32),I32);
2404 PL_markstack_ptr = PL_markstack;
2405 PL_markstack_max = PL_markstack + REASONABLE(32);
2409 New(54,PL_scopestack,REASONABLE(32),I32);
2410 PL_scopestack_ix = 0;
2411 PL_scopestack_max = REASONABLE(32);
2413 New(54,PL_savestack,REASONABLE(128),ANY);
2414 PL_savestack_ix = 0;
2415 PL_savestack_max = REASONABLE(128);
2417 New(54,PL_retstack,REASONABLE(16),OP*);
2419 PL_retstack_max = REASONABLE(16);
2428 while (PL_curstackinfo->si_next)
2429 PL_curstackinfo = PL_curstackinfo->si_next;
2430 while (PL_curstackinfo) {
2431 PERL_SI *p = PL_curstackinfo->si_prev;
2432 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
2433 Safefree(PL_curstackinfo->si_cxstack);
2434 Safefree(PL_curstackinfo);
2435 PL_curstackinfo = p;
2437 Safefree(PL_tmps_stack);
2438 Safefree(PL_markstack);
2439 Safefree(PL_scopestack);
2440 Safefree(PL_savestack);
2441 Safefree(PL_retstack);
2443 Safefree(PL_debname);
2444 Safefree(PL_debdelim);
2449 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
2460 lex_start(PL_linestr);
2462 PL_subname = newSVpv("main",4);
2466 init_predump_symbols(void)
2472 sv_setpvn(perl_get_sv("\"", TRUE), " ", 1);
2473 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
2474 GvMULTI_on(PL_stdingv);
2475 IoIFP(GvIOp(PL_stdingv)) = PerlIO_stdin();
2476 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
2478 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(PL_stdingv));
2480 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
2482 IoOFP(GvIOp(tmpgv)) = IoIFP(GvIOp(tmpgv)) = PerlIO_stdout();
2484 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
2486 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(PL_defoutgv));
2488 othergv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
2489 GvMULTI_on(othergv);
2490 IoOFP(GvIOp(othergv)) = IoIFP(GvIOp(othergv)) = PerlIO_stderr();
2491 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
2493 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(othergv));
2495 PL_statname = NEWSV(66,0); /* last filename we did stat on */
2498 PL_osname = savepv(OSNAME);
2502 init_postdump_symbols(register int argc, register char **argv, register char **env)
2509 argc--,argv++; /* skip name of script */
2510 if (PL_doswitches) {
2511 for (; argc > 0 && **argv == '-'; argc--,argv++) {
2514 if (argv[0][1] == '-') {
2518 if (s = strchr(argv[0], '=')) {
2520 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
2523 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
2526 PL_toptarget = NEWSV(0,0);
2527 sv_upgrade(PL_toptarget, SVt_PVFM);
2528 sv_setpvn(PL_toptarget, "", 0);
2529 PL_bodytarget = NEWSV(0,0);
2530 sv_upgrade(PL_bodytarget, SVt_PVFM);
2531 sv_setpvn(PL_bodytarget, "", 0);
2532 PL_formtarget = PL_bodytarget;
2535 if (tmpgv = gv_fetchpv("0",TRUE, SVt_PV)) {
2536 sv_setpv(GvSV(tmpgv),PL_origfilename);
2537 magicname("0", "0", 1);
2539 if (tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))
2540 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
2541 if (PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV)) {
2542 GvMULTI_on(PL_argvgv);
2543 (void)gv_AVadd(PL_argvgv);
2544 av_clear(GvAVn(PL_argvgv));
2545 for (; argc > 0; argc--,argv++) {
2546 av_push(GvAVn(PL_argvgv),newSVpv(argv[0],0));
2549 if (PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV)) {
2551 GvMULTI_on(PL_envgv);
2552 hv = GvHVn(PL_envgv);
2553 hv_magic(hv, PL_envgv, 'E');
2554 #ifndef VMS /* VMS doesn't have environ array */
2555 /* Note that if the supplied env parameter is actually a copy
2556 of the global environ then it may now point to free'd memory
2557 if the environment has been modified since. To avoid this
2558 problem we treat env==NULL as meaning 'use the default'
2563 environ[0] = Nullch;
2564 for (; *env; env++) {
2565 if (!(s = strchr(*env,'=')))
2571 sv = newSVpv(s--,0);
2572 (void)hv_store(hv, *env, s - *env, sv, 0);
2574 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
2575 /* Sins of the RTL. See note in my_setenv(). */
2576 (void)PerlEnv_putenv(savepv(*env));
2580 #ifdef DYNAMIC_ENV_FETCH
2581 HvNAME(hv) = savepv(ENV_HV_NAME);
2585 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
2586 sv_setiv(GvSV(tmpgv), (IV)getpid());
2595 s = PerlEnv_getenv("PERL5LIB");
2599 incpush(PerlEnv_getenv("PERLLIB"), FALSE);
2601 /* Treat PERL5?LIB as a possible search list logical name -- the
2602 * "natural" VMS idiom for a Unix path string. We allow each
2603 * element to be a set of |-separated directories for compatibility.
2607 if (my_trnlnm("PERL5LIB",buf,0))
2608 do { incpush(buf,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
2610 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE);
2614 /* Use the ~-expanded versions of APPLLIB (undocumented),
2615 ARCHLIB PRIVLIB SITEARCH and SITELIB
2618 incpush(APPLLIB_EXP, TRUE);
2622 incpush(ARCHLIB_EXP, FALSE);
2625 #define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
2628 incpush(PRIVLIB_EXP, TRUE);
2630 incpush(PRIVLIB_EXP, FALSE);
2634 incpush(SITEARCH_EXP, FALSE);
2638 incpush(SITELIB_EXP, TRUE);
2640 incpush(SITELIB_EXP, FALSE);
2644 incpush(".", FALSE);
2648 # define PERLLIB_SEP ';'
2651 # define PERLLIB_SEP '|'
2653 # define PERLLIB_SEP ':'
2656 #ifndef PERLLIB_MANGLE
2657 # define PERLLIB_MANGLE(s,n) (s)
2661 incpush(char *p, int addsubdirs)
2663 SV *subdir = Nullsv;
2669 subdir = sv_newmortal();
2670 if (!PL_archpat_auto) {
2671 STRLEN len = (sizeof(ARCHNAME) + strlen(PL_patchlevel)
2672 + sizeof("//auto"));
2673 New(55, PL_archpat_auto, len, char);
2674 sprintf(PL_archpat_auto, "/%s/%s/auto", ARCHNAME, PL_patchlevel);
2676 for (len = sizeof(ARCHNAME) + 2;
2677 PL_archpat_auto[len] != '\0' && PL_archpat_auto[len] != '/'; len++)
2678 if (PL_archpat_auto[len] == '.') PL_archpat_auto[len] = '_';
2683 /* Break at all separators */
2685 SV *libdir = NEWSV(55,0);
2688 /* skip any consecutive separators */
2689 while ( *p == PERLLIB_SEP ) {
2690 /* Uncomment the next line for PATH semantics */
2691 /* av_push(GvAVn(PL_incgv), newSVpv(".", 1)); */
2695 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
2696 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
2701 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
2702 p = Nullch; /* break out */
2706 * BEFORE pushing libdir onto @INC we may first push version- and
2707 * archname-specific sub-directories.
2710 struct stat tmpstatbuf;
2715 if ((unix = tounixspec_ts(SvPV(libdir,PL_na),Nullch)) != Nullch) {
2717 while (unix[len-1] == '/') len--; /* Cosmetic */
2718 sv_usepvn(libdir,unix,len);
2721 PerlIO_printf(PerlIO_stderr(),
2722 "Failed to unixify @INC element \"%s\"\n",
2723 SvPV(libdir,PL_na));
2725 /* .../archname/version if -d .../archname/version/auto */
2726 sv_setsv(subdir, libdir);
2727 sv_catpv(subdir, PL_archpat_auto);
2728 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2729 S_ISDIR(tmpstatbuf.st_mode))
2730 av_push(GvAVn(PL_incgv),
2731 newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2733 /* .../archname if -d .../archname/auto */
2734 sv_insert(subdir, SvCUR(libdir) + sizeof(ARCHNAME),
2735 strlen(PL_patchlevel) + 1, "", 0);
2736 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2737 S_ISDIR(tmpstatbuf.st_mode))
2738 av_push(GvAVn(PL_incgv),
2739 newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2742 /* finally push this lib directory on the end of @INC */
2743 av_push(GvAVn(PL_incgv), libdir);
2748 STATIC struct perl_thread *
2751 struct perl_thread *thr;
2754 Newz(53, thr, 1, struct perl_thread);
2755 PL_curcop = &PL_compiling;
2756 thr->cvcache = newHV();
2757 thr->threadsv = newAV();
2758 /* thr->threadsvp is set when find_threadsv is called */
2759 thr->specific = newAV();
2760 thr->errhv = newHV();
2761 thr->flags = THRf_R_JOINABLE;
2762 MUTEX_INIT(&thr->mutex);
2763 /* Handcraft thrsv similarly to mess_sv */
2764 New(53, PL_thrsv, 1, SV);
2765 Newz(53, xpv, 1, XPV);
2766 SvFLAGS(PL_thrsv) = SVt_PV;
2767 SvANY(PL_thrsv) = (void*)xpv;
2768 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
2769 SvPVX(PL_thrsv) = (char*)thr;
2770 SvCUR_set(PL_thrsv, sizeof(thr));
2771 SvLEN_set(PL_thrsv, sizeof(thr));
2772 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
2773 thr->oursv = PL_thrsv;
2774 PL_chopset = " \n-";
2776 MUTEX_LOCK(&PL_threads_mutex);
2781 MUTEX_UNLOCK(&PL_threads_mutex);
2783 #ifdef HAVE_THREAD_INTERN
2784 init_thread_intern(thr);
2787 #ifdef SET_THREAD_SELF
2788 SET_THREAD_SELF(thr);
2790 thr->self = pthread_self();
2791 #endif /* SET_THREAD_SELF */
2795 * These must come after the SET_THR because sv_setpvn does
2796 * SvTAINT and the taint fields require dTHR.
2798 PL_toptarget = NEWSV(0,0);
2799 sv_upgrade(PL_toptarget, SVt_PVFM);
2800 sv_setpvn(PL_toptarget, "", 0);
2801 PL_bodytarget = NEWSV(0,0);
2802 sv_upgrade(PL_bodytarget, SVt_PVFM);
2803 sv_setpvn(PL_bodytarget, "", 0);
2804 PL_formtarget = PL_bodytarget;
2805 thr->errsv = newSVpv("", 0);
2806 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
2809 PL_regcompp = FUNC_NAME_TO_PTR(pregcomp);
2810 PL_regexecp = FUNC_NAME_TO_PTR(regexec_flags);
2812 PL_reginterp_cnt = 0;
2816 #endif /* USE_THREADS */
2819 call_list(I32 oldscope, AV *paramList)
2822 line_t oldline = PL_curcop->cop_line;
2827 while (AvFILL(paramList) >= 0) {
2828 CV *cv = (CV*)av_shift(paramList);
2836 PUSHMARK(PL_stack_sp);
2837 perl_call_sv((SV*)cv, G_EVAL|G_DISCARD);
2838 (void)SvPV(atsv, len);
2841 PL_curcop = &PL_compiling;
2842 PL_curcop->cop_line = oldline;
2843 if (paramList == PL_beginav)
2844 sv_catpv(atsv, "BEGIN failed--compilation aborted");
2846 sv_catpv(atsv, "END failed--cleanup aborted");
2847 while (PL_scopestack_ix > oldscope)
2849 croak("%s", SvPVX(atsv));
2857 /* my_exit() was called */
2858 while (PL_scopestack_ix > oldscope)
2861 PL_curstash = PL_defstash;
2863 call_list(oldscope, PL_endav);
2865 PL_curcop = &PL_compiling;
2866 PL_curcop->cop_line = oldline;
2867 if (PL_statusvalue) {
2868 if (paramList == PL_beginav)
2869 croak("BEGIN failed--compilation aborted");
2871 croak("END failed--cleanup aborted");
2876 if (!PL_restartop) {
2877 PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
2882 PL_curcop = &PL_compiling;
2883 PL_curcop->cop_line = oldline;
2895 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
2896 thr, (unsigned long) status));
2905 STATUS_NATIVE_SET(status);
2912 my_failure_exit(void)
2915 if (vaxc$errno & 1) {
2916 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
2917 STATUS_NATIVE_SET(44);
2920 if (!vaxc$errno && errno) /* unlikely */
2921 STATUS_NATIVE_SET(44);
2923 STATUS_NATIVE_SET(vaxc$errno);
2928 STATUS_POSIX_SET(errno);
2930 exitstatus = STATUS_POSIX >> 8;
2931 if (exitstatus & 255)
2932 STATUS_POSIX_SET(exitstatus);
2934 STATUS_POSIX_SET(255);
2944 register PERL_CONTEXT *cx;
2949 SvREFCNT_dec(PL_e_script);
2950 PL_e_script = Nullsv;
2953 POPSTACK_TO(PL_mainstack);
2954 if (cxstack_ix >= 0) {
2957 POPBLOCK(cx,PL_curpm);
2966 #endif /* PERL_OBJECT */
2972 read_e_script(CPerlObj *pPerl, int idx, SV *buf_sv, int maxlen)
2974 read_e_script(int idx, SV *buf_sv, int maxlen)
2978 p = SvPVX(PL_e_script);
2979 nl = strchr(p, '\n');
2980 nl = (nl) ? nl+1 : SvEND(PL_e_script);
2982 filter_del(read_e_script);
2985 sv_catpvn(buf_sv, p, nl-p);
2986 sv_chop(PL_e_script, nl);