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> */
34 dEXTCONST char rcsid[] = "perl.c\nPatch level: ###\n";
42 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
49 static I32 read_e_script _((CPerlObj* pPerl, int idx, SV *buf_sv, int maxlen));
51 static void find_beginning _((void));
52 static void forbid_setid _((char *));
53 static void incpush _((char *, int));
54 static void init_interp _((void));
55 static void init_ids _((void));
56 static void init_debugger _((void));
57 static void init_lexer _((void));
58 static void init_main_stash _((void));
60 static struct perl_thread * init_main_thread _((void));
61 #endif /* USE_THREADS */
62 static void init_perllib _((void));
63 static void init_postdump_symbols _((int, char **, char **));
64 static void init_predump_symbols _((void));
65 static void my_exit_jump _((void)) __attribute__((noreturn));
66 static void nuke_stacks _((void));
67 static void open_script _((char *, bool, SV *, int *fd));
68 static void usage _((char *));
69 static void validate_suid _((char *, char*, int));
70 static I32 read_e_script _((int idx, SV *buf_sv, int maxlen));
74 CPerlObj* perl_alloc(IPerlMem* ipM, IPerlEnv* ipE, IPerlStdIO* ipStd,
75 IPerlLIO* ipLIO, IPerlDir* ipD, IPerlSock* ipS, IPerlProc* ipP)
77 CPerlObj* pPerl = new(ipM) CPerlObj(ipM, ipE, ipStd, ipLIO, ipD, ipS, ipP);
87 PerlInterpreter *sv_interp;
90 New(53, sv_interp, 1, PerlInterpreter);
93 #endif /* PERL_OBJECT */
97 CPerlObj::perl_construct(void)
99 perl_construct(register PerlInterpreter *sv_interp)
105 struct perl_thread *thr;
106 #endif /* FAKE_THREADS */
107 #endif /* USE_THREADS */
110 if (!(PL_curinterp = sv_interp))
116 Zero(sv_interp, 1, PerlInterpreter);
119 /* Init the real globals (and main thread)? */
124 #ifdef ALLOC_THREAD_KEY
127 if (pthread_key_create(&PL_thr_key, 0))
128 croak("panic: pthread_key_create");
130 MUTEX_INIT(&PL_sv_mutex);
132 * Safe to use basic SV functions from now on (though
133 * not things like mortals or tainting yet).
135 MUTEX_INIT(&PL_eval_mutex);
136 COND_INIT(&PL_eval_cond);
137 MUTEX_INIT(&PL_threads_mutex);
138 COND_INIT(&PL_nthreads_cond);
139 #ifdef EMULATE_ATOMIC_REFCOUNTS
140 MUTEX_INIT(&PL_svref_mutex);
141 #endif /* EMULATE_ATOMIC_REFCOUNTS */
143 thr = init_main_thread();
144 #endif /* USE_THREADS */
146 PL_linestr = NEWSV(65,79);
147 sv_upgrade(PL_linestr,SVt_PVIV);
149 if (!SvREADONLY(&PL_sv_undef)) {
150 /* set read-only and try to insure than we wont see REFCNT==0
153 SvREADONLY_on(&PL_sv_undef);
154 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
156 sv_setpv(&PL_sv_no,PL_No);
158 SvREADONLY_on(&PL_sv_no);
159 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
161 sv_setpv(&PL_sv_yes,PL_Yes);
163 SvREADONLY_on(&PL_sv_yes);
164 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
169 /* PL_sighandlerp = sighandler; */
171 PL_sighandlerp = sighandler;
173 PL_pidstatus = newHV();
177 * There is no way we can refer to them from Perl so close them to save
178 * space. The other alternative would be to provide STDAUX and STDPRN
181 (void)fclose(stdaux);
182 (void)fclose(stdprn);
186 PL_nrs = newSVpv("\n", 1);
187 PL_rs = SvREFCNT_inc(PL_nrs);
192 PL_perl_destruct_level = 1;
194 if (PL_perl_destruct_level > 0)
199 PL_lex_state = LEX_NOTPARSING;
201 PL_start_env.je_prev = NULL;
202 PL_start_env.je_ret = -1;
203 PL_start_env.je_mustcatch = TRUE;
204 PL_top_env = &PL_start_env;
207 SET_NUMERIC_STANDARD();
208 #if defined(SUBVERSION) && SUBVERSION > 0
209 sprintf(PL_patchlevel, "%7.5f", (double) 5
210 + ((double) PATCHLEVEL / (double) 1000)
211 + ((double) SUBVERSION / (double) 100000));
213 sprintf(PL_patchlevel, "%5.3f", (double) 5 +
214 ((double) PATCHLEVEL / (double) 1000));
217 #if defined(LOCAL_PATCH_COUNT)
218 PL_localpatches = local_patches; /* For possible -v */
221 PerlIO_init(); /* Hook to IO system */
223 PL_fdpid = newAV(); /* for remembering popen pids by fd */
224 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
227 New(51,PL_debname,128,char);
228 New(52,PL_debdelim,128,char);
236 CPerlObj::perl_destruct(void)
238 perl_destruct(register PerlInterpreter *sv_interp)
242 int destruct_level; /* 0=none, 1=full, 2=full with checks */
247 #endif /* USE_THREADS */
250 if (!(PL_curinterp = sv_interp))
256 /* Pass 1 on any remaining threads: detach joinables, join zombies */
258 MUTEX_LOCK(&PL_threads_mutex);
259 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
260 "perl_destruct: waiting for %d threads...\n",
262 for (t = thr->next; t != thr; t = t->next) {
263 MUTEX_LOCK(&t->mutex);
264 switch (ThrSTATE(t)) {
267 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
268 "perl_destruct: joining zombie %p\n", t));
269 ThrSETSTATE(t, THRf_DEAD);
270 MUTEX_UNLOCK(&t->mutex);
273 * The SvREFCNT_dec below may take a long time (e.g. av
274 * may contain an object scalar whose destructor gets
275 * called) so we have to unlock threads_mutex and start
278 MUTEX_UNLOCK(&PL_threads_mutex);
280 SvREFCNT_dec((SV*)av);
281 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
282 "perl_destruct: joined zombie %p OK\n", t));
284 case THRf_R_JOINABLE:
285 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
286 "perl_destruct: detaching thread %p\n", t));
287 ThrSETSTATE(t, THRf_R_DETACHED);
289 * We unlock threads_mutex and t->mutex in the opposite order
290 * from which we locked them just so that DETACH won't
291 * deadlock if it panics. It's only a breach of good style
292 * not a bug since they are unlocks not locks.
294 MUTEX_UNLOCK(&PL_threads_mutex);
296 MUTEX_UNLOCK(&t->mutex);
299 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
300 "perl_destruct: ignoring %p (state %u)\n",
302 MUTEX_UNLOCK(&t->mutex);
303 /* fall through and out */
306 /* We leave the above "Pass 1" loop with threads_mutex still locked */
308 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
309 while (PL_nthreads > 1)
311 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
312 "perl_destruct: final wait for %d threads\n",
314 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
316 /* At this point, we're the last thread */
317 MUTEX_UNLOCK(&PL_threads_mutex);
318 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "perl_destruct: armageddon has arrived\n"));
319 MUTEX_DESTROY(&PL_threads_mutex);
320 COND_DESTROY(&PL_nthreads_cond);
321 #endif /* !defined(FAKE_THREADS) */
322 #endif /* USE_THREADS */
324 destruct_level = PL_perl_destruct_level;
328 if (s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL")) {
330 if (destruct_level < i)
343 /* We must account for everything. */
345 /* Destroy the main CV and syntax tree */
347 PL_curpad = AvARRAY(PL_comppad);
348 op_free(PL_main_root);
349 PL_main_root = Nullop;
351 PL_curcop = &PL_compiling;
352 PL_main_start = Nullop;
353 SvREFCNT_dec(PL_main_cv);
356 if (PL_sv_objcount) {
358 * Try to destruct global references. We do this first so that the
359 * destructors and destructees still exist. Some sv's might remain.
360 * Non-referenced objects are on their own.
367 /* unhook hooks which will soon be, or use, destroyed data */
368 SvREFCNT_dec(PL_warnhook);
369 PL_warnhook = Nullsv;
370 SvREFCNT_dec(PL_diehook);
372 SvREFCNT_dec(PL_parsehook);
373 PL_parsehook = Nullsv;
375 /* call exit list functions */
376 while (PL_exitlistlen-- > 0)
377 PL_exitlist[PL_exitlistlen].fn(PERL_OBJECT_THIS_ PL_exitlist[PL_exitlistlen].ptr);
379 Safefree(PL_exitlist);
381 if (destruct_level == 0){
383 DEBUG_P(debprofdump());
385 /* The exit() function will do everything that needs doing. */
389 /* loosen bonds of global variables */
392 (void)PerlIO_close(PL_rsfp);
396 /* Filters for program text */
397 SvREFCNT_dec(PL_rsfp_filters);
398 PL_rsfp_filters = Nullav;
401 PL_preprocess = FALSE;
407 PL_doswitches = FALSE;
409 PL_doextract = FALSE;
410 PL_sawampersand = FALSE; /* must save all match strings */
411 PL_sawstudy = FALSE; /* do fbm_instr on all strings */
415 Safefree(PL_inplace);
419 SvREFCNT_dec(PL_e_script);
420 PL_e_script = Nullsv;
423 /* magical thingies */
425 Safefree(PL_ofs); /* $, */
428 Safefree(PL_ors); /* $\ */
431 SvREFCNT_dec(PL_rs); /* $/ */
434 SvREFCNT_dec(PL_nrs); /* $/ helper */
437 PL_multiline = 0; /* $* */
439 SvREFCNT_dec(PL_statname);
440 PL_statname = Nullsv;
443 /* defgv, aka *_ should be taken care of elsewhere */
445 /* clean up after study() */
446 SvREFCNT_dec(PL_lastscream);
447 PL_lastscream = Nullsv;
448 Safefree(PL_screamfirst);
450 Safefree(PL_screamnext);
453 /* startup and shutdown function lists */
454 SvREFCNT_dec(PL_beginav);
455 SvREFCNT_dec(PL_endav);
456 SvREFCNT_dec(PL_initav);
461 /* shortcuts just get cleared */
468 PL_argvoutgv = Nullgv;
470 PL_last_in_gv = Nullgv;
473 /* reset so print() ends up where we expect */
476 /* Prepare to destruct main symbol table. */
483 if (destruct_level >= 2) {
484 if (PL_scopestack_ix != 0)
485 warn("Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
486 (long)PL_scopestack_ix);
487 if (PL_savestack_ix != 0)
488 warn("Unbalanced saves: %ld more saves than restores\n",
489 (long)PL_savestack_ix);
490 if (PL_tmps_floor != -1)
491 warn("Unbalanced tmps: %ld more allocs than frees\n",
492 (long)PL_tmps_floor + 1);
493 if (cxstack_ix != -1)
494 warn("Unbalanced context: %ld more PUSHes than POPs\n",
495 (long)cxstack_ix + 1);
498 /* Now absolutely destruct everything, somehow or other, loops or no. */
500 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
501 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
502 last_sv_count = PL_sv_count;
505 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
506 SvFLAGS(PL_strtab) |= SVt_PVHV;
508 /* Destruct the global string table. */
510 /* Yell and reset the HeVAL() slots that are still holding refcounts,
511 * so that sv_free() won't fail on them.
519 max = HvMAX(PL_strtab);
520 array = HvARRAY(PL_strtab);
524 warn("Unbalanced string table refcount: (%d) for \"%s\"",
525 HeVAL(hent) - Nullsv, HeKEY(hent));
526 HeVAL(hent) = Nullsv;
536 SvREFCNT_dec(PL_strtab);
538 if (PL_sv_count != 0)
539 warn("Scalars leaked: %ld\n", (long)PL_sv_count);
543 /* No SVs have survived, need to clean out */
545 PL_pidstatus = Nullhv;
546 Safefree(PL_origfilename);
547 Safefree(PL_archpat_auto);
548 Safefree(PL_reg_start_tmp);
549 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
550 Safefree(PL_op_mask);
552 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
554 DEBUG_P(debprofdump());
556 MUTEX_DESTROY(&PL_sv_mutex);
557 MUTEX_DESTROY(&PL_eval_mutex);
558 COND_DESTROY(&PL_eval_cond);
560 /* As the penultimate thing, free the non-arena SV for thrsv */
561 Safefree(SvPVX(PL_thrsv));
562 Safefree(SvANY(PL_thrsv));
565 #endif /* USE_THREADS */
567 /* As the absolutely last thing, free the non-arena SV for mess() */
570 /* it could have accumulated taint magic */
571 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
574 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
575 moremagic = mg->mg_moremagic;
576 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
577 Safefree(mg->mg_ptr);
581 /* we know that type >= SVt_PV */
582 SvOOK_off(PL_mess_sv);
583 Safefree(SvPVX(PL_mess_sv));
584 Safefree(SvANY(PL_mess_sv));
585 Safefree(PL_mess_sv);
592 CPerlObj::perl_free(void)
594 perl_free(PerlInterpreter *sv_interp)
600 if (!(PL_curinterp = sv_interp))
608 CPerlObj::perl_atexit(void (*fn) (CPerlObj*,void *), void *ptr)
610 perl_atexit(void (*fn) (void *), void *ptr)
613 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
614 PL_exitlist[PL_exitlistlen].fn = fn;
615 PL_exitlist[PL_exitlistlen].ptr = ptr;
621 CPerlObj::perl_parse(void (*xsinit) (CPerlObj*), int argc, char **argv, char **env)
623 perl_parse(PerlInterpreter *sv_interp, void (*xsinit) (void), int argc, char **argv, char **env)
629 char *scriptname = NULL;
630 VOL bool dosearch = FALSE;
638 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
641 croak("suidperl is no longer needed since the kernel can now execute\n\
642 setuid perl scripts securely.\n");
647 if (!(PL_curinterp = sv_interp))
651 #if defined(NeXT) && defined(__DYNAMIC__)
652 _dyld_lookup_and_bind
653 ("__environ", (unsigned long *) &environ_pointer, NULL);
658 #ifndef VMS /* VMS doesn't have environ array */
659 PL_origenviron = environ;
664 /* Come here if running an undumped a.out. */
666 PL_origfilename = savepv(argv[0]);
667 PL_do_undump = FALSE;
668 cxstack_ix = -1; /* start label stack again */
670 init_postdump_symbols(argc,argv,env);
675 PL_curpad = AvARRAY(PL_comppad);
676 op_free(PL_main_root);
677 PL_main_root = Nullop;
679 PL_main_start = Nullop;
680 SvREFCNT_dec(PL_main_cv);
684 oldscope = PL_scopestack_ix;
692 /* my_exit() was called */
693 while (PL_scopestack_ix > oldscope)
696 PL_curstash = PL_defstash;
698 call_list(oldscope, PL_endav);
700 return STATUS_NATIVE_EXPORT;
703 PerlIO_printf(PerlIO_stderr(), "panic: top_env\n");
707 sv_setpvn(PL_linestr,"",0);
708 sv = newSVpv("",0); /* first used for -I flags */
712 for (argc--,argv++; argc > 0; argc--,argv++) {
713 if (argv[0][0] != '-' || !argv[0][1])
717 validarg = " PHOOEY ";
743 if (s = moreswitches(s))
753 if (PL_euid != PL_uid || PL_egid != PL_gid)
754 croak("No -e allowed in setuid scripts");
756 PL_e_script = newSVpv("",0);
757 filter_add(read_e_script, NULL);
760 sv_catpv(PL_e_script, s);
762 sv_catpv(PL_e_script, argv[1]);
766 croak("No code specified for -e");
767 sv_catpv(PL_e_script, "\n");
770 case 'I': /* -I handled both here and in moreswitches() */
772 if (!*++s && (s=argv[1]) != Nullch) {
775 while (s && isSPACE(*s))
779 for (e = s; *e && !isSPACE(*e); e++) ;
786 } /* XXX else croak? */
790 PL_preprocess = TRUE;
800 PL_preambleav = newAV();
801 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
803 PL_Sv = newSVpv("print myconfig();",0);
805 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
807 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
809 #if defined(DEBUGGING) || defined(NO_EMBED) || defined(MULTIPLICITY)
810 sv_catpv(PL_Sv,"\" Compile-time options:");
812 sv_catpv(PL_Sv," DEBUGGING");
815 sv_catpv(PL_Sv," NO_EMBED");
818 sv_catpv(PL_Sv," MULTIPLICITY");
820 sv_catpv(PL_Sv,"\\n\",");
822 #if defined(LOCAL_PATCH_COUNT)
823 if (LOCAL_PATCH_COUNT > 0) {
825 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
826 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
827 if (PL_localpatches[i])
828 sv_catpvf(PL_Sv,"\" \\t%s\\n\",",PL_localpatches[i]);
832 sv_catpvf(PL_Sv,"\" Built under %s\\n\"",OSNAME);
835 sv_catpvf(PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
837 sv_catpvf(PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
842 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
843 print \" \\%ENV:\\n @env\\n\" if @env; \
844 print \" \\@INC:\\n @INC\\n\";");
847 PL_Sv = newSVpv("config_vars(qw(",0);
848 sv_catpv(PL_Sv, ++s);
849 sv_catpv(PL_Sv, "))");
852 av_push(PL_preambleav, PL_Sv);
853 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
859 PL_cddir = savepv(s);
864 if (!*++s || isSPACE(*s)) {
868 /* catch use of gnu style long options */
869 if (strEQ(s, "version")) {
873 if (strEQ(s, "help")) {
880 croak("Unrecognized switch: -%s (-h will show valid options)",s);
885 if (!PL_tainting && (s = PerlEnv_getenv("PERL5OPT"))) {
896 if (!strchr("DIMUdmw", *s))
897 croak("Illegal switch in PERL5OPT: -%c", *s);
903 scriptname = argv[0];
906 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
908 else if (scriptname == Nullch) {
910 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
918 open_script(scriptname,dosearch,sv,&fdscript);
920 validate_suid(validarg, scriptname,fdscript);
925 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
926 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
927 CvUNIQUE_on(PL_compcv);
929 PL_comppad = newAV();
930 av_push(PL_comppad, Nullsv);
931 PL_curpad = AvARRAY(PL_comppad);
932 PL_comppad_name = newAV();
933 PL_comppad_name_fill = 0;
934 PL_min_intro_pending = 0;
937 av_store(PL_comppad_name, 0, newSVpv("@_", 2));
938 PL_curpad[0] = (SV*)newAV();
939 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
940 CvOWNER(PL_compcv) = 0;
941 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
942 MUTEX_INIT(CvMUTEXP(PL_compcv));
943 #endif /* USE_THREADS */
945 comppadlist = newAV();
946 AvREAL_off(comppadlist);
947 av_store(comppadlist, 0, (SV*)PL_comppad_name);
948 av_store(comppadlist, 1, (SV*)PL_comppad);
949 CvPADLIST(PL_compcv) = comppadlist;
951 boot_core_UNIVERSAL();
954 (*xsinit)(PERL_OBJECT_THIS); /* in case linked C routines want magical variables */
955 #if defined(VMS) || defined(WIN32) || defined(DJGPP)
959 init_predump_symbols();
960 /* init_postdump_symbols not currently designed to be called */
961 /* more than once (ENV isn't cleared first, for example) */
962 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
964 init_postdump_symbols(argc,argv,env);
968 /* now parse the script */
970 SETERRNO(0,SS$_NORMAL);
972 if (yyparse() || PL_error_count) {
974 croak("%s had compilation errors.\n", PL_origfilename);
976 croak("Execution of %s aborted due to compilation errors.\n",
980 PL_curcop->cop_line = 0;
981 PL_curstash = PL_defstash;
982 PL_preprocess = FALSE;
984 SvREFCNT_dec(PL_e_script);
985 PL_e_script = Nullsv;
988 /* now that script is parsed, we can modify record separator */
990 PL_rs = SvREFCNT_inc(PL_nrs);
991 sv_setsv(perl_get_sv("/", TRUE), PL_rs);
996 gv_check(PL_defstash);
1002 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1003 dump_mstats("after compilation:");
1014 CPerlObj::perl_run(void)
1016 perl_run(PerlInterpreter *sv_interp)
1025 if (!(PL_curinterp = sv_interp))
1029 oldscope = PL_scopestack_ix;
1034 cxstack_ix = -1; /* start context stack again */
1037 /* my_exit() was called */
1038 while (PL_scopestack_ix > oldscope)
1041 PL_curstash = PL_defstash;
1043 call_list(oldscope, PL_endav);
1045 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1046 dump_mstats("after execution: ");
1049 return STATUS_NATIVE_EXPORT;
1051 if (!PL_restartop) {
1052 PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
1057 POPSTACK_TO(PL_mainstack);
1061 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1062 PL_sawampersand ? "Enabling" : "Omitting"));
1064 if (!PL_restartop) {
1065 DEBUG_x(dump_all());
1066 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1067 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%lx\n",
1068 (unsigned long) thr));
1071 PerlIO_printf(PerlIO_stderr(), "%s syntax OK\n", PL_origfilename);
1074 if (PERLDB_SINGLE && PL_DBsingle)
1075 sv_setiv(PL_DBsingle, 1);
1077 call_list(oldscope, PL_initav);
1083 PL_op = PL_restartop;
1087 else if (PL_main_start) {
1088 CvDEPTH(PL_main_cv) = 1;
1089 PL_op = PL_main_start;
1099 perl_get_sv(char *name, I32 create)
1103 if (name[1] == '\0' && !isALPHA(name[0])) {
1104 PADOFFSET tmp = find_threadsv(name);
1105 if (tmp != NOT_IN_PAD) {
1107 return THREADSV(tmp);
1110 #endif /* USE_THREADS */
1111 gv = gv_fetchpv(name, create, SVt_PV);
1118 perl_get_av(char *name, I32 create)
1120 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1129 perl_get_hv(char *name, I32 create)
1131 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1140 perl_get_cv(char *name, I32 create)
1142 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1143 if (create && !GvCVu(gv))
1144 return newSUB(start_subparse(FALSE, 0),
1145 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1153 /* Be sure to refetch the stack pointer after calling these routines. */
1156 perl_call_argv(char *sub_name, I32 flags, register char **argv)
1158 /* See G_* flags in cop.h */
1159 /* null terminated arg list */
1166 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1171 return perl_call_pv(sub_name, flags);
1175 perl_call_pv(char *sub_name, I32 flags)
1176 /* name of the subroutine */
1177 /* See G_* flags in cop.h */
1179 return perl_call_sv((SV*)perl_get_cv(sub_name, TRUE), flags);
1183 perl_call_method(char *methname, I32 flags)
1184 /* name of the subroutine */
1185 /* See G_* flags in cop.h */
1191 XPUSHs(sv_2mortal(newSVpv(methname,0)));
1196 return perl_call_sv(*PL_stack_sp--, flags);
1199 /* May be called with any of a CV, a GV, or an SV containing the name. */
1201 perl_call_sv(SV *sv, I32 flags)
1203 /* See G_* flags in cop.h */
1206 LOGOP myop; /* fake syntax tree node */
1210 bool oldcatch = CATCH_GET;
1215 if (flags & G_DISCARD) {
1220 Zero(&myop, 1, LOGOP);
1221 myop.op_next = Nullop;
1222 if (!(flags & G_NOARGS))
1223 myop.op_flags |= OPf_STACKED;
1224 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1225 (flags & G_ARRAY) ? OPf_WANT_LIST :
1230 EXTEND(PL_stack_sp, 1);
1231 *++PL_stack_sp = sv;
1233 oldscope = PL_scopestack_ix;
1235 if (PERLDB_SUB && PL_curstash != PL_debstash
1236 /* Handle first BEGIN of -d. */
1237 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1238 /* Try harder, since this may have been a sighandler, thus
1239 * curstash may be meaningless. */
1240 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1241 && !(flags & G_NODEBUG))
1242 PL_op->op_private |= OPpENTERSUB_DB;
1244 if (flags & G_EVAL) {
1245 cLOGOP->op_other = PL_op;
1247 /* we're trying to emulate pp_entertry() here */
1249 register PERL_CONTEXT *cx;
1250 I32 gimme = GIMME_V;
1255 push_return(PL_op->op_next);
1256 PUSHBLOCK(cx, CXt_EVAL, PL_stack_sp);
1258 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1261 if (flags & G_KEEPERR)
1276 /* my_exit() was called */
1277 PL_curstash = PL_defstash;
1281 croak("Callback called exit");
1286 PL_op = PL_restartop;
1290 PL_stack_sp = PL_stack_base + oldmark;
1291 if (flags & G_ARRAY)
1295 *++PL_stack_sp = &PL_sv_undef;
1303 if (PL_op == (OP*)&myop)
1304 PL_op = pp_entersub(ARGS);
1307 retval = PL_stack_sp - (PL_stack_base + oldmark);
1308 if ((flags & G_EVAL) && !(flags & G_KEEPERR))
1312 if (flags & G_EVAL) {
1313 if (PL_scopestack_ix > oldscope) {
1317 register PERL_CONTEXT *cx;
1329 CATCH_SET(oldcatch);
1331 if (flags & G_DISCARD) {
1332 PL_stack_sp = PL_stack_base + oldmark;
1341 /* Eval a string. The G_EVAL flag is always assumed. */
1344 perl_eval_sv(SV *sv, I32 flags)
1346 /* See G_* flags in cop.h */
1349 UNOP myop; /* fake syntax tree node */
1350 I32 oldmark = SP - PL_stack_base;
1357 if (flags & G_DISCARD) {
1364 Zero(PL_op, 1, UNOP);
1365 EXTEND(PL_stack_sp, 1);
1366 *++PL_stack_sp = sv;
1367 oldscope = PL_scopestack_ix;
1369 if (!(flags & G_NOARGS))
1370 myop.op_flags = OPf_STACKED;
1371 myop.op_next = Nullop;
1372 myop.op_type = OP_ENTEREVAL;
1373 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1374 (flags & G_ARRAY) ? OPf_WANT_LIST :
1376 if (flags & G_KEEPERR)
1377 myop.op_flags |= OPf_SPECIAL;
1387 /* my_exit() was called */
1388 PL_curstash = PL_defstash;
1392 croak("Callback called exit");
1397 PL_op = PL_restartop;
1401 PL_stack_sp = PL_stack_base + oldmark;
1402 if (flags & G_ARRAY)
1406 *++PL_stack_sp = &PL_sv_undef;
1411 if (PL_op == (OP*)&myop)
1412 PL_op = pp_entereval(ARGS);
1415 retval = PL_stack_sp - (PL_stack_base + oldmark);
1416 if (!(flags & G_KEEPERR))
1421 if (flags & G_DISCARD) {
1422 PL_stack_sp = PL_stack_base + oldmark;
1432 perl_eval_pv(char *p, I32 croak_on_error)
1435 SV* sv = newSVpv(p, 0);
1438 perl_eval_sv(sv, G_SCALAR);
1445 if (croak_on_error && SvTRUE(ERRSV))
1446 croak(SvPVx(ERRSV, PL_na));
1451 /* Require a module. */
1454 perl_require_pv(char *pv)
1458 PUSHSTACKi(PERLSI_REQUIRE);
1460 sv = sv_newmortal();
1461 sv_setpv(sv, "require '");
1464 perl_eval_sv(sv, G_DISCARD);
1470 magicname(char *sym, char *name, I32 namlen)
1474 if (gv = gv_fetchpv(sym,TRUE, SVt_PV))
1475 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1479 usage(char *name) /* XXX move this out into a module ? */
1482 /* This message really ought to be max 23 lines.
1483 * Removed -h because the user already knows that opton. Others? */
1485 static char *usage_msg[] = {
1486 "-0[octal] specify record separator (\\0, if no argument)",
1487 "-a autosplit mode with -n or -p (splits $_ into @F)",
1488 "-c check syntax only (runs BEGIN and END blocks)",
1489 "-d[:debugger] run scripts under debugger",
1490 "-D[number/list] set debugging flags (argument is a bit mask or flags)",
1491 "-e 'command' one line of script. Several -e's allowed. Omit [programfile].",
1492 "-F/pattern/ split() pattern for autosplit (-a). The //'s are optional.",
1493 "-i[extension] edit <> files in place (make backup if extension supplied)",
1494 "-Idirectory specify @INC/#include directory (may be used more than once)",
1495 "-l[octal] enable line ending processing, specifies line terminator",
1496 "-[mM][-]module.. executes `use/no module...' before executing your script.",
1497 "-n assume 'while (<>) { ... }' loop around your script",
1498 "-p assume loop like -n but print line also like sed",
1499 "-P run script through C preprocessor before compilation",
1500 "-s enable some switch parsing for switches after script name",
1501 "-S look for the script using PATH environment variable",
1502 "-T turn on tainting checks",
1503 "-u dump core after parsing script",
1504 "-U allow unsafe operations",
1505 "-v print version number, patchlevel plus VERY IMPORTANT perl info",
1506 "-V[:variable] print perl configuration information",
1507 "-w TURN WARNINGS ON FOR COMPILATION OF YOUR SCRIPT. Recommended.",
1508 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
1512 char **p = usage_msg;
1514 printf("\nUsage: %s [switches] [--] [programfile] [arguments]", name);
1516 printf("\n %s", *p++);
1519 /* This routine handles any switches that can be given during run */
1522 moreswitches(char *s)
1531 rschar = scan_oct(s, 4, &numlen);
1532 SvREFCNT_dec(PL_nrs);
1533 if (rschar & ~((U8)~0))
1534 PL_nrs = &PL_sv_undef;
1535 else if (!rschar && numlen >= 2)
1536 PL_nrs = newSVpv("", 0);
1539 PL_nrs = newSVpv(&ch, 1);
1545 PL_splitstr = savepv(s + 1);
1559 if (*s == ':' || *s == '=') {
1560 my_setenv("PERL5DB", form("use Devel::%s;", ++s));
1564 PL_perldb = PERLDB_ALL;
1571 if (isALPHA(s[1])) {
1572 static char debopts[] = "psltocPmfrxuLHXDS";
1575 for (s++; *s && (d = strchr(debopts,*s)); s++)
1576 PL_debug |= 1 << (d - debopts);
1579 PL_debug = atoi(s+1);
1580 for (s++; isDIGIT(*s); s++) ;
1582 PL_debug |= 0x80000000;
1584 warn("Recompile perl with -DDEBUGGING to use -D switch\n");
1585 for (s++; isALNUM(*s); s++) ;
1590 usage(PL_origargv[0]);
1594 Safefree(PL_inplace);
1595 PL_inplace = savepv(s+1);
1597 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
1600 if (*s == '-') /* Additional switches on #! line. */
1604 case 'I': /* -I handled both here and in parse_perl() */
1607 while (*s && isSPACE(*s))
1611 for (e = s; *e && !isSPACE(*e); e++) ;
1612 p = savepvn(s, e-s);
1618 croak("No space allowed after -I");
1626 PL_ors = savepv("\n");
1628 *PL_ors = scan_oct(s, 3 + (*s == '0'), &numlen);
1633 if (RsPARA(PL_nrs)) {
1638 PL_ors = SvPV(PL_nrs, PL_orslen);
1639 PL_ors = savepvn(PL_ors, PL_orslen);
1643 forbid_setid("-M"); /* XXX ? */
1646 forbid_setid("-m"); /* XXX ? */
1651 /* -M-foo == 'no foo' */
1652 if (*s == '-') { use = "no "; ++s; }
1653 sv = newSVpv(use,0);
1655 /* We allow -M'Module qw(Foo Bar)' */
1656 while(isALNUM(*s) || *s==':') ++s;
1658 sv_catpv(sv, start);
1659 if (*(start-1) == 'm') {
1661 croak("Can't use '%c' after -mname", *s);
1662 sv_catpv( sv, " ()");
1665 sv_catpvn(sv, start, s-start);
1666 sv_catpv(sv, " split(/,/,q{");
1671 if (PL_preambleav == NULL)
1672 PL_preambleav = newAV();
1673 av_push(PL_preambleav, sv);
1676 croak("No space allowed after -%c", *(s-1));
1688 PL_doswitches = TRUE;
1693 croak("Too late for \"-T\" option");
1697 PL_do_undump = TRUE;
1705 #if defined(SUBVERSION) && SUBVERSION > 0
1706 printf("\nThis is perl, version 5.%03d_%02d built for %s",
1707 PATCHLEVEL, SUBVERSION, ARCHNAME);
1709 printf("\nThis is perl, version %s built for %s",
1710 PL_patchlevel, ARCHNAME);
1712 #if defined(LOCAL_PATCH_COUNT)
1713 if (LOCAL_PATCH_COUNT > 0)
1714 printf("\n(with %d registered patch%s, see perl -V for more detail)",
1715 LOCAL_PATCH_COUNT, (LOCAL_PATCH_COUNT!=1) ? "es" : "");
1718 printf("\n\nCopyright 1987-1998, Larry Wall\n");
1720 printf("\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
1723 printf("djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n");
1724 printf("djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1998\n");
1727 printf("\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
1728 "Version 5 port Copyright (c) 1994-1998, Andreas Kaiser, Ilya Zakharevich\n");
1731 printf("atariST series port, ++jrb bammi@cadence.com\n");
1734 printf("BeOS port Copyright Tom Spindler, 1997-1998\n");
1737 printf("MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1998\n");
1740 printf("MVS (OS390) port by Mortice Kern Systems, 1997-1998\n");
1742 #ifdef BINARY_BUILD_NOTICE
1743 BINARY_BUILD_NOTICE;
1746 Perl may be copied only under the terms of either the Artistic License or the\n\
1747 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
1748 Complete documentation for Perl, including FAQ lists, should be found on\n\
1749 this system using `man perl' or `perldoc perl'. If you have access to the\n\
1750 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
1758 if (s[1] == '-') /* Additional switches on #! line. */
1769 #ifdef ALTERNATE_SHEBANG
1770 case 'S': /* OS/2 needs -S on "extproc" line. */
1778 croak("Can't emulate -%.1s on #! line",s);
1783 /* compliments of Tom Christiansen */
1785 /* unexec() can be found in the Gnu emacs distribution */
1786 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
1797 prog = newSVpv(BIN_EXP, 0);
1798 sv_catpv(prog, "/perl");
1799 file = newSVpv(PL_origfilename, 0);
1800 sv_catpv(file, ".perldump");
1802 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
1803 /* unexec prints msg to stderr in case of failure */
1804 PerlProc_exit(status);
1807 # include <lib$routines.h>
1808 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
1810 ABORT(); /* for use with undump */
1815 /* initialize curinterp */
1820 #ifdef PERL_OBJECT /* XXX kludge */
1823 PL_chopset = " \n-"; \
1824 PL_copline = NOLINE; \
1825 PL_curcop = &PL_compiling;\
1826 PL_curcopdb = NULL; \
1829 PL_laststatval = -1; \
1830 PL_laststype = OP_STAT; \
1831 PL_maxscream = -1; \
1832 PL_maxsysfd = MAXSYSFD; \
1833 PL_statname = Nullsv; \
1834 PL_tmps_floor = -1; \
1836 PL_op_mask = NULL; \
1838 PL_laststatval = -1; \
1839 PL_laststype = OP_STAT; \
1840 PL_mess_sv = Nullsv; \
1841 PL_splitstr = " "; \
1842 PL_generation = 100; \
1843 PL_exitlist = NULL; \
1844 PL_exitlistlen = 0; \
1846 PL_in_clean_objs = FALSE; \
1847 PL_in_clean_all = FALSE; \
1848 PL_profiledata = NULL; \
1850 PL_rsfp_filters = Nullav; \
1854 # ifdef MULTIPLICITY
1855 # define PERLVAR(var,type)
1856 # define PERLVARI(var,type,init) PL_curinterp->var = init;
1857 # define PERLVARIC(var,type,init) PL_curinterp->var = init;
1858 # include "intrpvar.h"
1859 # ifndef USE_THREADS
1860 # include "thrdvar.h"
1866 # define PERLVAR(var,type)
1867 # define PERLVARI(var,type,init) PL_##var = init;
1868 # define PERLVARIC(var,type,init) PL_##var = init;
1869 # include "intrpvar.h"
1870 # ifndef USE_THREADS
1871 # include "thrdvar.h"
1882 init_main_stash(void)
1887 /* Note that strtab is a rather special HV. Assumptions are made
1888 about not iterating on it, and not adding tie magic to it.
1889 It is properly deallocated in perl_destruct() */
1890 PL_strtab = newHV();
1891 HvSHAREKEYS_off(PL_strtab); /* mandatory */
1892 hv_ksplit(PL_strtab, 512);
1894 PL_curstash = PL_defstash = newHV();
1895 PL_curstname = newSVpv("main",4);
1896 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
1897 SvREFCNT_dec(GvHV(gv));
1898 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
1900 HvNAME(PL_defstash) = savepv("main");
1901 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
1902 GvMULTI_on(PL_incgv);
1903 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
1904 GvMULTI_on(PL_hintgv);
1905 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
1906 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
1907 GvMULTI_on(PL_errgv);
1908 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
1909 GvMULTI_on(PL_replgv);
1910 (void)form("%240s",""); /* Preallocate temp - for immediate signals. */
1911 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
1912 sv_setpvn(ERRSV, "", 0);
1913 PL_curstash = PL_defstash;
1914 PL_compiling.cop_stash = PL_defstash;
1915 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
1916 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
1917 /* We must init $/ before switches are processed. */
1918 sv_setpvn(GvSV(gv_fetchpv("/", TRUE, SVt_PV)), "\n", 1);
1922 open_script(char *scriptname, bool dosearch, SV *sv, int *fdscript)
1930 PL_origfilename = savepv("-e");
1933 /* if find_script() returns, it returns a malloc()-ed value */
1934 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
1936 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
1937 char *s = scriptname + 8;
1938 *fdscript = atoi(s);
1942 scriptname = savepv(s + 1);
1943 Safefree(PL_origfilename);
1944 PL_origfilename = scriptname;
1949 PL_curcop->cop_filegv = gv_fetchfile(PL_origfilename);
1950 if (strEQ(PL_origfilename,"-"))
1952 if (*fdscript >= 0) {
1953 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
1954 #if defined(HAS_FCNTL) && defined(F_SETFD)
1956 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
1959 else if (PL_preprocess) {
1960 char *cpp_cfg = CPPSTDIN;
1961 SV *cpp = newSVpv("",0);
1962 SV *cmd = NEWSV(0,0);
1964 if (strEQ(cpp_cfg, "cppstdin"))
1965 sv_catpvf(cpp, "%s/", BIN_EXP);
1966 sv_catpv(cpp, cpp_cfg);
1969 sv_catpv(sv,PRIVLIB_EXP);
1973 sed %s -e \"/^[^#]/b\" \
1974 -e \"/^#[ ]*include[ ]/b\" \
1975 -e \"/^#[ ]*define[ ]/b\" \
1976 -e \"/^#[ ]*if[ ]/b\" \
1977 -e \"/^#[ ]*ifdef[ ]/b\" \
1978 -e \"/^#[ ]*ifndef[ ]/b\" \
1979 -e \"/^#[ ]*else/b\" \
1980 -e \"/^#[ ]*elif[ ]/b\" \
1981 -e \"/^#[ ]*undef[ ]/b\" \
1982 -e \"/^#[ ]*endif/b\" \
1985 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
1988 %s %s -e '/^[^#]/b' \
1989 -e '/^#[ ]*include[ ]/b' \
1990 -e '/^#[ ]*define[ ]/b' \
1991 -e '/^#[ ]*if[ ]/b' \
1992 -e '/^#[ ]*ifdef[ ]/b' \
1993 -e '/^#[ ]*ifndef[ ]/b' \
1994 -e '/^#[ ]*else/b' \
1995 -e '/^#[ ]*elif[ ]/b' \
1996 -e '/^#[ ]*undef[ ]/b' \
1997 -e '/^#[ ]*endif/b' \
2005 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2007 scriptname, cpp, sv, CPPMINUS);
2008 PL_doextract = FALSE;
2009 #ifdef IAMSUID /* actually, this is caught earlier */
2010 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2012 (void)seteuid(PL_uid); /* musn't stay setuid root */
2015 (void)setreuid((Uid_t)-1, PL_uid);
2017 #ifdef HAS_SETRESUID
2018 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2020 PerlProc_setuid(PL_uid);
2024 if (PerlProc_geteuid() != PL_uid)
2025 croak("Can't do seteuid!\n");
2027 #endif /* IAMSUID */
2028 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2032 else if (!*scriptname) {
2033 forbid_setid("program input from stdin");
2034 PL_rsfp = PerlIO_stdin();
2037 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2038 #if defined(HAS_FCNTL) && defined(F_SETFD)
2040 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2045 #ifndef IAMSUID /* in case script is not readable before setuid */
2047 PerlLIO_stat(SvPVX(GvSV(PL_curcop->cop_filegv)),&PL_statbuf) >= 0 &&
2048 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2051 PerlProc_execv(form("%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv);
2052 croak("Can't do setuid\n");
2056 croak("Can't open perl script \"%s\": %s\n",
2057 SvPVX(GvSV(PL_curcop->cop_filegv)), Strerror(errno));
2062 validate_suid(char *validarg, char *scriptname, int fdscript)
2066 /* do we need to emulate setuid on scripts? */
2068 /* This code is for those BSD systems that have setuid #! scripts disabled
2069 * in the kernel because of a security problem. Merely defining DOSUID
2070 * in perl will not fix that problem, but if you have disabled setuid
2071 * scripts in the kernel, this will attempt to emulate setuid and setgid
2072 * on scripts that have those now-otherwise-useless bits set. The setuid
2073 * root version must be called suidperl or sperlN.NNN. If regular perl
2074 * discovers that it has opened a setuid script, it calls suidperl with
2075 * the same argv that it had. If suidperl finds that the script it has
2076 * just opened is NOT setuid root, it sets the effective uid back to the
2077 * uid. We don't just make perl setuid root because that loses the
2078 * effective uid we had before invoking perl, if it was different from the
2081 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2082 * be defined in suidperl only. suidperl must be setuid root. The
2083 * Configure script will set this up for you if you want it.
2090 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2091 croak("Can't stat script \"%s\"",PL_origfilename);
2092 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2096 #ifndef HAS_SETREUID
2097 /* On this access check to make sure the directories are readable,
2098 * there is actually a small window that the user could use to make
2099 * filename point to an accessible directory. So there is a faint
2100 * chance that someone could execute a setuid script down in a
2101 * non-accessible directory. I don't know what to do about that.
2102 * But I don't think it's too important. The manual lies when
2103 * it says access() is useful in setuid programs.
2105 if (PerlLIO_access(SvPVX(GvSV(PL_curcop->cop_filegv)),1)) /*double check*/
2106 croak("Permission denied");
2108 /* If we can swap euid and uid, then we can determine access rights
2109 * with a simple stat of the file, and then compare device and
2110 * inode to make sure we did stat() on the same file we opened.
2111 * Then we just have to make sure he or she can execute it.
2114 struct stat tmpstatbuf;
2118 setreuid(PL_euid,PL_uid) < 0
2121 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2124 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2125 croak("Can't swap uid and euid"); /* really paranoid */
2126 if (PerlLIO_stat(SvPVX(GvSV(PL_curcop->cop_filegv)),&tmpstatbuf) < 0)
2127 croak("Permission denied"); /* testing full pathname here */
2128 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2129 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2130 (void)PerlIO_close(PL_rsfp);
2131 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2132 PerlIO_printf(PL_rsfp,
2133 "User %ld tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2134 (Filename of set-id script was %s, uid %ld gid %ld.)\n\nSincerely,\nperl\n",
2135 (long)PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2136 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
2137 SvPVX(GvSV(PL_curcop->cop_filegv)),
2138 (long)PL_statbuf.st_uid, (long)PL_statbuf.st_gid);
2139 (void)PerlProc_pclose(PL_rsfp);
2141 croak("Permission denied\n");
2145 setreuid(PL_uid,PL_euid) < 0
2147 # if defined(HAS_SETRESUID)
2148 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2151 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2152 croak("Can't reswap uid and euid");
2153 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2154 croak("Permission denied\n");
2156 #endif /* HAS_SETREUID */
2157 #endif /* IAMSUID */
2159 if (!S_ISREG(PL_statbuf.st_mode))
2160 croak("Permission denied");
2161 if (PL_statbuf.st_mode & S_IWOTH)
2162 croak("Setuid/gid script is writable by world");
2163 PL_doswitches = FALSE; /* -s is insecure in suid */
2164 PL_curcop->cop_line++;
2165 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2166 strnNE(SvPV(PL_linestr,PL_na),"#!",2) ) /* required even on Sys V */
2167 croak("No #! line");
2168 s = SvPV(PL_linestr,PL_na)+2;
2170 while (!isSPACE(*s)) s++;
2171 for (s2 = s; (s2 > SvPV(PL_linestr,PL_na)+2 &&
2172 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2173 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2174 croak("Not a perl script");
2175 while (*s == ' ' || *s == '\t') s++;
2177 * #! arg must be what we saw above. They can invoke it by
2178 * mentioning suidperl explicitly, but they may not add any strange
2179 * arguments beyond what #! says if they do invoke suidperl that way.
2181 len = strlen(validarg);
2182 if (strEQ(validarg," PHOOEY ") ||
2183 strnNE(s,validarg,len) || !isSPACE(s[len]))
2184 croak("Args must match #! line");
2187 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2188 PL_euid == PL_statbuf.st_uid)
2190 croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2191 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2192 #endif /* IAMSUID */
2194 if (PL_euid) { /* oops, we're not the setuid root perl */
2195 (void)PerlIO_close(PL_rsfp);
2198 PerlProc_execv(form("%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv);
2200 croak("Can't do setuid\n");
2203 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2205 (void)setegid(PL_statbuf.st_gid);
2208 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2210 #ifdef HAS_SETRESGID
2211 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2213 PerlProc_setgid(PL_statbuf.st_gid);
2217 if (PerlProc_getegid() != PL_statbuf.st_gid)
2218 croak("Can't do setegid!\n");
2220 if (PL_statbuf.st_mode & S_ISUID) {
2221 if (PL_statbuf.st_uid != PL_euid)
2223 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2226 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2228 #ifdef HAS_SETRESUID
2229 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2231 PerlProc_setuid(PL_statbuf.st_uid);
2235 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2236 croak("Can't do seteuid!\n");
2238 else if (PL_uid) { /* oops, mustn't run as root */
2240 (void)seteuid((Uid_t)PL_uid);
2243 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2245 #ifdef HAS_SETRESUID
2246 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2248 PerlProc_setuid((Uid_t)PL_uid);
2252 if (PerlProc_geteuid() != PL_uid)
2253 croak("Can't do seteuid!\n");
2256 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2257 croak("Permission denied\n"); /* they can't do this */
2260 else if (PL_preprocess)
2261 croak("-P not allowed for setuid/setgid script\n");
2262 else if (fdscript >= 0)
2263 croak("fd script not allowed in suidperl\n");
2265 croak("Script is not setuid/setgid in suidperl\n");
2267 /* We absolutely must clear out any saved ids here, so we */
2268 /* exec the real perl, substituting fd script for scriptname. */
2269 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2270 PerlIO_rewind(PL_rsfp);
2271 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2272 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2273 if (!PL_origargv[which])
2274 croak("Permission denied");
2275 PL_origargv[which] = savepv(form("/dev/fd/%d/%s",
2276 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
2277 #if defined(HAS_FCNTL) && defined(F_SETFD)
2278 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
2280 PerlProc_execv(form("%s/perl%s", BIN_EXP, PL_patchlevel), PL_origargv);/* try again */
2281 croak("Can't do setuid\n");
2282 #endif /* IAMSUID */
2284 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
2285 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
2287 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
2288 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
2290 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
2293 croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2294 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2295 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
2296 /* not set-id, must be wrapped */
2302 find_beginning(void)
2304 register char *s, *s2;
2306 /* skip forward in input to the real script? */
2309 while (PL_doextract) {
2310 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
2311 croak("No Perl script found in input\n");
2312 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
2313 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
2314 PL_doextract = FALSE;
2315 while (*s && !(isSPACE (*s) || *s == '#')) s++;
2317 while (*s == ' ' || *s == '\t') s++;
2319 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
2320 if (strnEQ(s2-4,"perl",4))
2322 while (s = moreswitches(s)) ;
2324 if (PL_cddir && PerlDir_chdir(PL_cddir) < 0)
2325 croak("Can't chdir to %s",PL_cddir);
2334 PL_uid = (int)PerlProc_getuid();
2335 PL_euid = (int)PerlProc_geteuid();
2336 PL_gid = (int)PerlProc_getgid();
2337 PL_egid = (int)PerlProc_getegid();
2339 PL_uid |= PL_gid << 16;
2340 PL_euid |= PL_egid << 16;
2342 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
2346 forbid_setid(char *s)
2348 if (PL_euid != PL_uid)
2349 croak("No %s allowed while running setuid", s);
2350 if (PL_egid != PL_gid)
2351 croak("No %s allowed while running setgid", s);
2358 PL_curstash = PL_debstash;
2359 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
2360 AvREAL_off(PL_dbargs);
2361 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
2362 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
2363 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
2364 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
2365 sv_setiv(PL_DBsingle, 0);
2366 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
2367 sv_setiv(PL_DBtrace, 0);
2368 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
2369 sv_setiv(PL_DBsignal, 0);
2370 PL_curstash = PL_defstash;
2373 #ifndef STRESS_REALLOC
2374 #define REASONABLE(size) (size)
2376 #define REASONABLE(size) (1) /* unreasonable */
2380 init_stacks(ARGSproto)
2382 /* start with 128-item stack and 8K cxstack */
2383 PL_curstackinfo = new_stackinfo(REASONABLE(128),
2384 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
2385 PL_curstackinfo->si_type = PERLSI_MAIN;
2386 PL_curstack = PL_curstackinfo->si_stack;
2387 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
2389 PL_stack_base = AvARRAY(PL_curstack);
2390 PL_stack_sp = PL_stack_base;
2391 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
2393 New(50,PL_tmps_stack,REASONABLE(128),SV*);
2396 PL_tmps_max = REASONABLE(128);
2398 New(54,PL_markstack,REASONABLE(32),I32);
2399 PL_markstack_ptr = PL_markstack;
2400 PL_markstack_max = PL_markstack + REASONABLE(32);
2404 New(54,PL_scopestack,REASONABLE(32),I32);
2405 PL_scopestack_ix = 0;
2406 PL_scopestack_max = REASONABLE(32);
2408 New(54,PL_savestack,REASONABLE(128),ANY);
2409 PL_savestack_ix = 0;
2410 PL_savestack_max = REASONABLE(128);
2412 New(54,PL_retstack,REASONABLE(16),OP*);
2414 PL_retstack_max = REASONABLE(16);
2423 while (PL_curstackinfo->si_next)
2424 PL_curstackinfo = PL_curstackinfo->si_next;
2425 while (PL_curstackinfo) {
2426 PERL_SI *p = PL_curstackinfo->si_prev;
2427 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
2428 Safefree(PL_curstackinfo->si_cxstack);
2429 Safefree(PL_curstackinfo);
2430 PL_curstackinfo = p;
2432 Safefree(PL_tmps_stack);
2433 Safefree(PL_markstack);
2434 Safefree(PL_scopestack);
2435 Safefree(PL_savestack);
2436 Safefree(PL_retstack);
2438 Safefree(PL_debname);
2439 Safefree(PL_debdelim);
2444 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
2455 lex_start(PL_linestr);
2457 PL_subname = newSVpv("main",4);
2461 init_predump_symbols(void)
2467 sv_setpvn(perl_get_sv("\"", TRUE), " ", 1);
2468 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
2469 GvMULTI_on(PL_stdingv);
2470 IoIFP(GvIOp(PL_stdingv)) = PerlIO_stdin();
2471 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
2473 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(PL_stdingv));
2475 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
2477 IoOFP(GvIOp(tmpgv)) = IoIFP(GvIOp(tmpgv)) = PerlIO_stdout();
2479 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
2481 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(PL_defoutgv));
2483 othergv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
2484 GvMULTI_on(othergv);
2485 IoOFP(GvIOp(othergv)) = IoIFP(GvIOp(othergv)) = PerlIO_stderr();
2486 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
2488 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(othergv));
2490 PL_statname = NEWSV(66,0); /* last filename we did stat on */
2493 PL_osname = savepv(OSNAME);
2497 init_postdump_symbols(register int argc, register char **argv, register char **env)
2504 argc--,argv++; /* skip name of script */
2505 if (PL_doswitches) {
2506 for (; argc > 0 && **argv == '-'; argc--,argv++) {
2509 if (argv[0][1] == '-') {
2513 if (s = strchr(argv[0], '=')) {
2515 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
2518 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
2521 PL_toptarget = NEWSV(0,0);
2522 sv_upgrade(PL_toptarget, SVt_PVFM);
2523 sv_setpvn(PL_toptarget, "", 0);
2524 PL_bodytarget = NEWSV(0,0);
2525 sv_upgrade(PL_bodytarget, SVt_PVFM);
2526 sv_setpvn(PL_bodytarget, "", 0);
2527 PL_formtarget = PL_bodytarget;
2530 if (tmpgv = gv_fetchpv("0",TRUE, SVt_PV)) {
2531 sv_setpv(GvSV(tmpgv),PL_origfilename);
2532 magicname("0", "0", 1);
2534 if (tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))
2535 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
2536 if (PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV)) {
2537 GvMULTI_on(PL_argvgv);
2538 (void)gv_AVadd(PL_argvgv);
2539 av_clear(GvAVn(PL_argvgv));
2540 for (; argc > 0; argc--,argv++) {
2541 av_push(GvAVn(PL_argvgv),newSVpv(argv[0],0));
2544 if (PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV)) {
2546 GvMULTI_on(PL_envgv);
2547 hv = GvHVn(PL_envgv);
2548 hv_magic(hv, PL_envgv, 'E');
2549 #ifndef VMS /* VMS doesn't have environ array */
2550 /* Note that if the supplied env parameter is actually a copy
2551 of the global environ then it may now point to free'd memory
2552 if the environment has been modified since. To avoid this
2553 problem we treat env==NULL as meaning 'use the default'
2558 environ[0] = Nullch;
2559 for (; *env; env++) {
2560 if (!(s = strchr(*env,'=')))
2566 sv = newSVpv(s--,0);
2567 (void)hv_store(hv, *env, s - *env, sv, 0);
2569 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
2570 /* Sins of the RTL. See note in my_setenv(). */
2571 (void)PerlEnv_putenv(savepv(*env));
2575 #ifdef DYNAMIC_ENV_FETCH
2576 HvNAME(hv) = savepv(ENV_HV_NAME);
2580 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
2581 sv_setiv(GvSV(tmpgv), (IV)getpid());
2590 s = PerlEnv_getenv("PERL5LIB");
2594 incpush(PerlEnv_getenv("PERLLIB"), FALSE);
2596 /* Treat PERL5?LIB as a possible search list logical name -- the
2597 * "natural" VMS idiom for a Unix path string. We allow each
2598 * element to be a set of |-separated directories for compatibility.
2602 if (my_trnlnm("PERL5LIB",buf,0))
2603 do { incpush(buf,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
2605 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE);
2609 /* Use the ~-expanded versions of APPLLIB (undocumented),
2610 ARCHLIB PRIVLIB SITEARCH and SITELIB
2613 incpush(APPLLIB_EXP, TRUE);
2617 incpush(ARCHLIB_EXP, FALSE);
2620 #define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
2623 incpush(PRIVLIB_EXP, TRUE);
2625 incpush(PRIVLIB_EXP, FALSE);
2629 incpush(SITEARCH_EXP, FALSE);
2633 incpush(SITELIB_EXP, TRUE);
2635 incpush(SITELIB_EXP, FALSE);
2639 incpush(".", FALSE);
2643 # define PERLLIB_SEP ';'
2646 # define PERLLIB_SEP '|'
2648 # define PERLLIB_SEP ':'
2651 #ifndef PERLLIB_MANGLE
2652 # define PERLLIB_MANGLE(s,n) (s)
2656 incpush(char *p, int addsubdirs)
2658 SV *subdir = Nullsv;
2664 subdir = sv_newmortal();
2665 if (!PL_archpat_auto) {
2666 STRLEN len = (sizeof(ARCHNAME) + strlen(PL_patchlevel)
2667 + sizeof("//auto"));
2668 New(55, PL_archpat_auto, len, char);
2669 sprintf(PL_archpat_auto, "/%s/%s/auto", ARCHNAME, PL_patchlevel);
2671 for (len = sizeof(ARCHNAME) + 2;
2672 PL_archpat_auto[len] != '\0' && PL_archpat_auto[len] != '/'; len++)
2673 if (PL_archpat_auto[len] == '.') PL_archpat_auto[len] = '_';
2678 /* Break at all separators */
2680 SV *libdir = NEWSV(55,0);
2683 /* skip any consecutive separators */
2684 while ( *p == PERLLIB_SEP ) {
2685 /* Uncomment the next line for PATH semantics */
2686 /* av_push(GvAVn(PL_incgv), newSVpv(".", 1)); */
2690 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
2691 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
2696 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
2697 p = Nullch; /* break out */
2701 * BEFORE pushing libdir onto @INC we may first push version- and
2702 * archname-specific sub-directories.
2705 struct stat tmpstatbuf;
2710 if ((unix = tounixspec_ts(SvPV(libdir,PL_na),Nullch)) != Nullch) {
2712 while (unix[len-1] == '/') len--; /* Cosmetic */
2713 sv_usepvn(libdir,unix,len);
2716 PerlIO_printf(PerlIO_stderr(),
2717 "Failed to unixify @INC element \"%s\"\n",
2718 SvPV(libdir,PL_na));
2720 /* .../archname/version if -d .../archname/version/auto */
2721 sv_setsv(subdir, libdir);
2722 sv_catpv(subdir, PL_archpat_auto);
2723 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2724 S_ISDIR(tmpstatbuf.st_mode))
2725 av_push(GvAVn(PL_incgv),
2726 newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2728 /* .../archname if -d .../archname/auto */
2729 sv_insert(subdir, SvCUR(libdir) + sizeof(ARCHNAME),
2730 strlen(PL_patchlevel) + 1, "", 0);
2731 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2732 S_ISDIR(tmpstatbuf.st_mode))
2733 av_push(GvAVn(PL_incgv),
2734 newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2737 /* finally push this lib directory on the end of @INC */
2738 av_push(GvAVn(PL_incgv), libdir);
2743 STATIC struct perl_thread *
2746 struct perl_thread *thr;
2749 Newz(53, thr, 1, struct perl_thread);
2750 PL_curcop = &PL_compiling;
2751 thr->cvcache = newHV();
2752 thr->threadsv = newAV();
2753 /* thr->threadsvp is set when find_threadsv is called */
2754 thr->specific = newAV();
2755 thr->errhv = newHV();
2756 thr->flags = THRf_R_JOINABLE;
2757 MUTEX_INIT(&thr->mutex);
2758 /* Handcraft thrsv similarly to mess_sv */
2759 New(53, PL_thrsv, 1, SV);
2760 Newz(53, xpv, 1, XPV);
2761 SvFLAGS(PL_thrsv) = SVt_PV;
2762 SvANY(PL_thrsv) = (void*)xpv;
2763 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
2764 SvPVX(PL_thrsv) = (char*)thr;
2765 SvCUR_set(PL_thrsv, sizeof(thr));
2766 SvLEN_set(PL_thrsv, sizeof(thr));
2767 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
2768 thr->oursv = PL_thrsv;
2769 PL_chopset = " \n-";
2771 MUTEX_LOCK(&PL_threads_mutex);
2776 MUTEX_UNLOCK(&PL_threads_mutex);
2778 #ifdef HAVE_THREAD_INTERN
2779 init_thread_intern(thr);
2782 #ifdef SET_THREAD_SELF
2783 SET_THREAD_SELF(thr);
2785 thr->self = pthread_self();
2786 #endif /* SET_THREAD_SELF */
2790 * These must come after the SET_THR because sv_setpvn does
2791 * SvTAINT and the taint fields require dTHR.
2793 PL_toptarget = NEWSV(0,0);
2794 sv_upgrade(PL_toptarget, SVt_PVFM);
2795 sv_setpvn(PL_toptarget, "", 0);
2796 PL_bodytarget = NEWSV(0,0);
2797 sv_upgrade(PL_bodytarget, SVt_PVFM);
2798 sv_setpvn(PL_bodytarget, "", 0);
2799 PL_formtarget = PL_bodytarget;
2800 thr->errsv = newSVpv("", 0);
2801 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
2804 PL_regcompp = FUNC_NAME_TO_PTR(pregcomp);
2805 PL_regexecp = FUNC_NAME_TO_PTR(regexec_flags);
2807 PL_reginterp_cnt = 0;
2811 #endif /* USE_THREADS */
2814 call_list(I32 oldscope, AV *paramList)
2817 line_t oldline = PL_curcop->cop_line;
2822 while (AvFILL(paramList) >= 0) {
2823 CV *cv = (CV*)av_shift(paramList);
2831 PUSHMARK(PL_stack_sp);
2832 perl_call_sv((SV*)cv, G_EVAL|G_DISCARD);
2833 (void)SvPV(atsv, len);
2836 PL_curcop = &PL_compiling;
2837 PL_curcop->cop_line = oldline;
2838 if (paramList == PL_beginav)
2839 sv_catpv(atsv, "BEGIN failed--compilation aborted");
2841 sv_catpv(atsv, "END failed--cleanup aborted");
2842 while (PL_scopestack_ix > oldscope)
2844 croak("%s", SvPVX(atsv));
2852 /* my_exit() was called */
2853 while (PL_scopestack_ix > oldscope)
2856 PL_curstash = PL_defstash;
2858 call_list(oldscope, PL_endav);
2860 PL_curcop = &PL_compiling;
2861 PL_curcop->cop_line = oldline;
2862 if (PL_statusvalue) {
2863 if (paramList == PL_beginav)
2864 croak("BEGIN failed--compilation aborted");
2866 croak("END failed--cleanup aborted");
2871 if (!PL_restartop) {
2872 PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
2877 PL_curcop = &PL_compiling;
2878 PL_curcop->cop_line = oldline;
2890 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
2891 thr, (unsigned long) status));
2900 STATUS_NATIVE_SET(status);
2907 my_failure_exit(void)
2910 if (vaxc$errno & 1) {
2911 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
2912 STATUS_NATIVE_SET(44);
2915 if (!vaxc$errno && errno) /* unlikely */
2916 STATUS_NATIVE_SET(44);
2918 STATUS_NATIVE_SET(vaxc$errno);
2923 STATUS_POSIX_SET(errno);
2925 exitstatus = STATUS_POSIX >> 8;
2926 if (exitstatus & 255)
2927 STATUS_POSIX_SET(exitstatus);
2929 STATUS_POSIX_SET(255);
2939 register PERL_CONTEXT *cx;
2944 SvREFCNT_dec(PL_e_script);
2945 PL_e_script = Nullsv;
2948 POPSTACK_TO(PL_mainstack);
2949 if (cxstack_ix >= 0) {
2952 POPBLOCK(cx,PL_curpm);
2961 #endif /* PERL_OBJECT */
2967 read_e_script(CPerlObj *pPerl, int idx, SV *buf_sv, int maxlen)
2969 read_e_script(int idx, SV *buf_sv, int maxlen)
2973 p = SvPVX(PL_e_script);
2974 nl = strchr(p, '\n');
2975 nl = (nl) ? nl+1 : SvEND(PL_e_script);
2978 sv_catpvn(buf_sv, p, nl-p);
2979 sv_chop(PL_e_script, nl);