3 * Copyright (c) 1987-1999 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 *));
68 static int fd_on_nosuid_fs _((int));
70 static void validate_suid _((char *, char*, int));
71 static I32 read_e_script _((int idx, SV *buf_sv, int maxlen));
75 CPerlObj* perl_alloc(IPerlMem* ipM, IPerlEnv* ipE, IPerlStdIO* ipStd,
76 IPerlLIO* ipLIO, IPerlDir* ipD, IPerlSock* ipS, IPerlProc* ipP)
78 CPerlObj* pPerl = new(ipM) CPerlObj(ipM, ipE, ipStd, ipLIO, ipD, ipS, ipP);
88 PerlInterpreter *sv_interp;
91 New(53, sv_interp, 1, PerlInterpreter);
94 #endif /* PERL_OBJECT */
98 CPerlObj::perl_construct(void)
100 perl_construct(register PerlInterpreter *sv_interp)
106 struct perl_thread *thr;
107 #endif /* FAKE_THREADS */
108 #endif /* USE_THREADS */
111 if (!(PL_curinterp = sv_interp))
117 Zero(sv_interp, 1, PerlInterpreter);
120 /* Init the real globals (and main thread)? */
125 #ifdef ALLOC_THREAD_KEY
128 if (pthread_key_create(&PL_thr_key, 0))
129 croak("panic: pthread_key_create");
131 MUTEX_INIT(&PL_sv_mutex);
132 MUTEX_INIT(&PL_cred_mutex);
134 * Safe to use basic SV functions from now on (though
135 * not things like mortals or tainting yet).
137 MUTEX_INIT(&PL_eval_mutex);
138 COND_INIT(&PL_eval_cond);
139 MUTEX_INIT(&PL_threads_mutex);
140 COND_INIT(&PL_nthreads_cond);
141 #ifdef EMULATE_ATOMIC_REFCOUNTS
142 MUTEX_INIT(&PL_svref_mutex);
143 #endif /* EMULATE_ATOMIC_REFCOUNTS */
145 thr = init_main_thread();
146 #endif /* USE_THREADS */
148 PL_linestr = NEWSV(65,79);
149 sv_upgrade(PL_linestr,SVt_PVIV);
151 if (!SvREADONLY(&PL_sv_undef)) {
152 /* set read-only and try to insure than we wont see REFCNT==0
155 SvREADONLY_on(&PL_sv_undef);
156 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
158 sv_setpv(&PL_sv_no,PL_No);
160 SvREADONLY_on(&PL_sv_no);
161 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
163 sv_setpv(&PL_sv_yes,PL_Yes);
165 SvREADONLY_on(&PL_sv_yes);
166 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
171 /* PL_sighandlerp = sighandler; */
173 PL_sighandlerp = sighandler;
175 PL_pidstatus = newHV();
179 * There is no way we can refer to them from Perl so close them to save
180 * space. The other alternative would be to provide STDAUX and STDPRN
183 (void)fclose(stdaux);
184 (void)fclose(stdprn);
188 PL_nrs = newSVpv("\n", 1);
189 PL_rs = SvREFCNT_inc(PL_nrs);
194 PL_perl_destruct_level = 1;
196 if (PL_perl_destruct_level > 0)
201 PL_lex_state = LEX_NOTPARSING;
203 PL_start_env.je_prev = NULL;
204 PL_start_env.je_ret = -1;
205 PL_start_env.je_mustcatch = TRUE;
206 PL_top_env = &PL_start_env;
209 SET_NUMERIC_STANDARD();
210 #if defined(SUBVERSION) && SUBVERSION > 0
211 sprintf(PL_patchlevel, "%7.5f", (double) 5
212 + ((double) PATCHLEVEL / (double) 1000)
213 + ((double) SUBVERSION / (double) 100000));
215 sprintf(PL_patchlevel, "%5.3f", (double) 5 +
216 ((double) PATCHLEVEL / (double) 1000));
219 #if defined(LOCAL_PATCH_COUNT)
220 PL_localpatches = local_patches; /* For possible -v */
223 PerlIO_init(); /* Hook to IO system */
225 PL_fdpid = newAV(); /* for remembering popen pids by fd */
226 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
229 New(51,PL_debname,128,char);
230 New(52,PL_debdelim,128,char);
238 CPerlObj::perl_destruct(void)
240 perl_destruct(register PerlInterpreter *sv_interp)
244 int destruct_level; /* 0=none, 1=full, 2=full with checks */
249 #endif /* USE_THREADS */
252 if (!(PL_curinterp = sv_interp))
258 /* Pass 1 on any remaining threads: detach joinables, join zombies */
260 MUTEX_LOCK(&PL_threads_mutex);
261 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
262 "perl_destruct: waiting for %d threads...\n",
264 for (t = thr->next; t != thr; t = t->next) {
265 MUTEX_LOCK(&t->mutex);
266 switch (ThrSTATE(t)) {
269 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
270 "perl_destruct: joining zombie %p\n", t));
271 ThrSETSTATE(t, THRf_DEAD);
272 MUTEX_UNLOCK(&t->mutex);
275 * The SvREFCNT_dec below may take a long time (e.g. av
276 * may contain an object scalar whose destructor gets
277 * called) so we have to unlock threads_mutex and start
280 MUTEX_UNLOCK(&PL_threads_mutex);
282 SvREFCNT_dec((SV*)av);
283 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
284 "perl_destruct: joined zombie %p OK\n", t));
286 case THRf_R_JOINABLE:
287 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
288 "perl_destruct: detaching thread %p\n", t));
289 ThrSETSTATE(t, THRf_R_DETACHED);
291 * We unlock threads_mutex and t->mutex in the opposite order
292 * from which we locked them just so that DETACH won't
293 * deadlock if it panics. It's only a breach of good style
294 * not a bug since they are unlocks not locks.
296 MUTEX_UNLOCK(&PL_threads_mutex);
298 MUTEX_UNLOCK(&t->mutex);
301 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
302 "perl_destruct: ignoring %p (state %u)\n",
304 MUTEX_UNLOCK(&t->mutex);
305 /* fall through and out */
308 /* We leave the above "Pass 1" loop with threads_mutex still locked */
310 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
311 while (PL_nthreads > 1)
313 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
314 "perl_destruct: final wait for %d threads\n",
316 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
318 /* At this point, we're the last thread */
319 MUTEX_UNLOCK(&PL_threads_mutex);
320 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "perl_destruct: armageddon has arrived\n"));
321 MUTEX_DESTROY(&PL_threads_mutex);
322 COND_DESTROY(&PL_nthreads_cond);
323 #endif /* !defined(FAKE_THREADS) */
324 #endif /* USE_THREADS */
326 destruct_level = PL_perl_destruct_level;
330 if (s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL")) {
332 if (destruct_level < i)
345 /* We must account for everything. */
347 /* Destroy the main CV and syntax tree */
349 PL_curpad = AvARRAY(PL_comppad);
350 op_free(PL_main_root);
351 PL_main_root = Nullop;
353 PL_curcop = &PL_compiling;
354 PL_main_start = Nullop;
355 SvREFCNT_dec(PL_main_cv);
358 if (PL_sv_objcount) {
360 * Try to destruct global references. We do this first so that the
361 * destructors and destructees still exist. Some sv's might remain.
362 * Non-referenced objects are on their own.
369 /* unhook hooks which will soon be, or use, destroyed data */
370 SvREFCNT_dec(PL_warnhook);
371 PL_warnhook = Nullsv;
372 SvREFCNT_dec(PL_diehook);
374 SvREFCNT_dec(PL_parsehook);
375 PL_parsehook = Nullsv;
377 /* call exit list functions */
378 while (PL_exitlistlen-- > 0)
379 PL_exitlist[PL_exitlistlen].fn(PERL_OBJECT_THIS_ PL_exitlist[PL_exitlistlen].ptr);
381 Safefree(PL_exitlist);
383 if (destruct_level == 0){
385 DEBUG_P(debprofdump());
387 /* The exit() function will do everything that needs doing. */
391 /* loosen bonds of global variables */
394 (void)PerlIO_close(PL_rsfp);
398 /* Filters for program text */
399 SvREFCNT_dec(PL_rsfp_filters);
400 PL_rsfp_filters = Nullav;
403 PL_preprocess = FALSE;
409 PL_doswitches = FALSE;
411 PL_doextract = FALSE;
412 PL_sawampersand = FALSE; /* must save all match strings */
413 PL_sawstudy = FALSE; /* do fbm_instr on all strings */
417 Safefree(PL_inplace);
421 SvREFCNT_dec(PL_e_script);
422 PL_e_script = Nullsv;
425 /* magical thingies */
427 Safefree(PL_ofs); /* $, */
430 Safefree(PL_ors); /* $\ */
433 SvREFCNT_dec(PL_rs); /* $/ */
436 SvREFCNT_dec(PL_nrs); /* $/ helper */
439 PL_multiline = 0; /* $* */
441 SvREFCNT_dec(PL_statname);
442 PL_statname = Nullsv;
445 /* defgv, aka *_ should be taken care of elsewhere */
447 /* clean up after study() */
448 SvREFCNT_dec(PL_lastscream);
449 PL_lastscream = Nullsv;
450 Safefree(PL_screamfirst);
452 Safefree(PL_screamnext);
455 /* startup and shutdown function lists */
456 SvREFCNT_dec(PL_beginav);
457 SvREFCNT_dec(PL_endav);
458 SvREFCNT_dec(PL_initav);
463 /* shortcuts just get cleared */
470 PL_argvoutgv = Nullgv;
472 PL_last_in_gv = Nullgv;
475 /* reset so print() ends up where we expect */
478 /* Prepare to destruct main symbol table. */
485 if (destruct_level >= 2) {
486 if (PL_scopestack_ix != 0)
487 warn("Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
488 (long)PL_scopestack_ix);
489 if (PL_savestack_ix != 0)
490 warn("Unbalanced saves: %ld more saves than restores\n",
491 (long)PL_savestack_ix);
492 if (PL_tmps_floor != -1)
493 warn("Unbalanced tmps: %ld more allocs than frees\n",
494 (long)PL_tmps_floor + 1);
495 if (cxstack_ix != -1)
496 warn("Unbalanced context: %ld more PUSHes than POPs\n",
497 (long)cxstack_ix + 1);
500 /* Now absolutely destruct everything, somehow or other, loops or no. */
502 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
503 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
504 last_sv_count = PL_sv_count;
507 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
508 SvFLAGS(PL_strtab) |= SVt_PVHV;
510 /* Destruct the global string table. */
512 /* Yell and reset the HeVAL() slots that are still holding refcounts,
513 * so that sv_free() won't fail on them.
521 max = HvMAX(PL_strtab);
522 array = HvARRAY(PL_strtab);
526 warn("Unbalanced string table refcount: (%d) for \"%s\"",
527 HeVAL(hent) - Nullsv, HeKEY(hent));
528 HeVAL(hent) = Nullsv;
538 SvREFCNT_dec(PL_strtab);
540 if (PL_sv_count != 0)
541 warn("Scalars leaked: %ld\n", (long)PL_sv_count);
545 /* No SVs have survived, need to clean out */
547 PL_pidstatus = Nullhv;
548 Safefree(PL_origfilename);
549 Safefree(PL_archpat_auto);
550 Safefree(PL_reg_start_tmp);
551 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
552 Safefree(PL_op_mask);
554 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
556 DEBUG_P(debprofdump());
558 MUTEX_DESTROY(&PL_strtab_mutex);
559 MUTEX_DESTROY(&PL_sv_mutex);
560 MUTEX_DESTROY(&PL_cred_mutex);
561 MUTEX_DESTROY(&PL_eval_mutex);
562 COND_DESTROY(&PL_eval_cond);
563 #ifdef EMULATE_ATOMIC_REFCOUNTS
564 MUTEX_DESTROY(&PL_svref_mutex);
565 #endif /* EMULATE_ATOMIC_REFCOUNTS */
567 /* As the penultimate thing, free the non-arena SV for thrsv */
568 Safefree(SvPVX(PL_thrsv));
569 Safefree(SvANY(PL_thrsv));
572 #endif /* USE_THREADS */
574 /* As the absolutely last thing, free the non-arena SV for mess() */
577 /* it could have accumulated taint magic */
578 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
581 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
582 moremagic = mg->mg_moremagic;
583 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
584 Safefree(mg->mg_ptr);
588 /* we know that type >= SVt_PV */
589 SvOOK_off(PL_mess_sv);
590 Safefree(SvPVX(PL_mess_sv));
591 Safefree(SvANY(PL_mess_sv));
592 Safefree(PL_mess_sv);
599 CPerlObj::perl_free(void)
601 perl_free(PerlInterpreter *sv_interp)
607 if (!(PL_curinterp = sv_interp))
615 CPerlObj::perl_atexit(void (*fn) (CPerlObj*,void *), void *ptr)
617 perl_atexit(void (*fn) (void *), void *ptr)
620 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
621 PL_exitlist[PL_exitlistlen].fn = fn;
622 PL_exitlist[PL_exitlistlen].ptr = ptr;
628 CPerlObj::perl_parse(void (*xsinit) (CPerlObj*), int argc, char **argv, char **env)
630 perl_parse(PerlInterpreter *sv_interp, void (*xsinit) (void), int argc, char **argv, char **env)
636 char *scriptname = NULL;
637 VOL bool dosearch = FALSE;
645 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
648 croak("suidperl is no longer needed since the kernel can now execute\n\
649 setuid perl scripts securely.\n");
654 if (!(PL_curinterp = sv_interp))
658 #if defined(NeXT) && defined(__DYNAMIC__)
659 _dyld_lookup_and_bind
660 ("__environ", (unsigned long *) &environ_pointer, NULL);
665 #ifndef VMS /* VMS doesn't have environ array */
666 PL_origenviron = environ;
671 /* Come here if running an undumped a.out. */
673 PL_origfilename = savepv(argv[0]);
674 PL_do_undump = FALSE;
675 cxstack_ix = -1; /* start label stack again */
677 init_postdump_symbols(argc,argv,env);
682 PL_curpad = AvARRAY(PL_comppad);
683 op_free(PL_main_root);
684 PL_main_root = Nullop;
686 PL_main_start = Nullop;
687 SvREFCNT_dec(PL_main_cv);
691 oldscope = PL_scopestack_ix;
699 /* my_exit() was called */
700 while (PL_scopestack_ix > oldscope)
703 PL_curstash = PL_defstash;
705 call_list(oldscope, PL_endav);
707 return STATUS_NATIVE_EXPORT;
710 PerlIO_printf(PerlIO_stderr(), "panic: top_env\n");
714 sv_setpvn(PL_linestr,"",0);
715 sv = newSVpv("",0); /* first used for -I flags */
719 for (argc--,argv++; argc > 0; argc--,argv++) {
720 if (argv[0][0] != '-' || !argv[0][1])
724 validarg = " PHOOEY ";
731 #ifndef PERL_STRICT_CR
753 if (s = moreswitches(s))
763 if (PL_euid != PL_uid || PL_egid != PL_gid)
764 croak("No -e allowed in setuid scripts");
766 PL_e_script = newSVpv("",0);
767 filter_add(read_e_script, NULL);
770 sv_catpv(PL_e_script, s);
772 sv_catpv(PL_e_script, argv[1]);
776 croak("No code specified for -e");
777 sv_catpv(PL_e_script, "\n");
780 case 'I': /* -I handled both here and in moreswitches() */
782 if (!*++s && (s=argv[1]) != Nullch) {
785 while (s && isSPACE(*s))
789 for (e = s; *e && !isSPACE(*e); e++) ;
796 } /* XXX else croak? */
800 PL_preprocess = TRUE;
810 PL_preambleav = newAV();
811 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
813 PL_Sv = newSVpv("print myconfig();",0);
815 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
817 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
819 #if defined(DEBUGGING) || defined(NO_EMBED) || defined(MULTIPLICITY)
820 sv_catpv(PL_Sv,"\" Compile-time options:");
822 sv_catpv(PL_Sv," DEBUGGING");
825 sv_catpv(PL_Sv," NO_EMBED");
828 sv_catpv(PL_Sv," MULTIPLICITY");
830 sv_catpv(PL_Sv,"\\n\",");
832 #if defined(LOCAL_PATCH_COUNT)
833 if (LOCAL_PATCH_COUNT > 0) {
835 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
836 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
837 if (PL_localpatches[i])
838 sv_catpvf(PL_Sv,"\" \\t%s\\n\",",PL_localpatches[i]);
842 sv_catpvf(PL_Sv,"\" Built under %s\\n\"",OSNAME);
845 sv_catpvf(PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
847 sv_catpvf(PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
852 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
853 print \" \\%ENV:\\n @env\\n\" if @env; \
854 print \" \\@INC:\\n @INC\\n\";");
857 PL_Sv = newSVpv("config_vars(qw(",0);
858 sv_catpv(PL_Sv, ++s);
859 sv_catpv(PL_Sv, "))");
862 av_push(PL_preambleav, PL_Sv);
863 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
869 PL_cddir = savepv(s);
874 if (!*++s || isSPACE(*s)) {
878 /* catch use of gnu style long options */
879 if (strEQ(s, "version")) {
883 if (strEQ(s, "help")) {
890 croak("Unrecognized switch: -%s (-h will show valid options)",s);
895 if (!PL_tainting && (s = PerlEnv_getenv("PERL5OPT"))) {
906 if (!strchr("DIMUdmw", *s))
907 croak("Illegal switch in PERL5OPT: -%c", *s);
913 scriptname = argv[0];
916 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
918 else if (scriptname == Nullch) {
920 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
928 open_script(scriptname,dosearch,sv,&fdscript);
930 validate_suid(validarg, scriptname,fdscript);
935 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
936 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
937 CvUNIQUE_on(PL_compcv);
939 PL_comppad = newAV();
940 av_push(PL_comppad, Nullsv);
941 PL_curpad = AvARRAY(PL_comppad);
942 PL_comppad_name = newAV();
943 PL_comppad_name_fill = 0;
944 PL_min_intro_pending = 0;
947 av_store(PL_comppad_name, 0, newSVpv("@_", 2));
948 PL_curpad[0] = (SV*)newAV();
949 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
950 CvOWNER(PL_compcv) = 0;
951 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
952 MUTEX_INIT(CvMUTEXP(PL_compcv));
953 #endif /* USE_THREADS */
955 comppadlist = newAV();
956 AvREAL_off(comppadlist);
957 av_store(comppadlist, 0, (SV*)PL_comppad_name);
958 av_store(comppadlist, 1, (SV*)PL_comppad);
959 CvPADLIST(PL_compcv) = comppadlist;
961 boot_core_UNIVERSAL();
964 (*xsinit)(PERL_OBJECT_THIS); /* in case linked C routines want magical variables */
965 #if defined(VMS) || defined(WIN32) || defined(DJGPP)
969 init_predump_symbols();
970 /* init_postdump_symbols not currently designed to be called */
971 /* more than once (ENV isn't cleared first, for example) */
972 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
974 init_postdump_symbols(argc,argv,env);
978 /* now parse the script */
980 SETERRNO(0,SS$_NORMAL);
982 if (yyparse() || PL_error_count) {
984 croak("%s had compilation errors.\n", PL_origfilename);
986 croak("Execution of %s aborted due to compilation errors.\n",
990 PL_curcop->cop_line = 0;
991 PL_curstash = PL_defstash;
992 PL_preprocess = FALSE;
994 SvREFCNT_dec(PL_e_script);
995 PL_e_script = Nullsv;
998 /* now that script is parsed, we can modify record separator */
1000 PL_rs = SvREFCNT_inc(PL_nrs);
1001 sv_setsv(perl_get_sv("/", TRUE), PL_rs);
1006 gv_check(PL_defstash);
1012 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1013 dump_mstats("after compilation:");
1024 CPerlObj::perl_run(void)
1026 perl_run(PerlInterpreter *sv_interp)
1035 if (!(PL_curinterp = sv_interp))
1039 oldscope = PL_scopestack_ix;
1044 cxstack_ix = -1; /* start context stack again */
1047 /* my_exit() was called */
1048 while (PL_scopestack_ix > oldscope)
1051 PL_curstash = PL_defstash;
1053 call_list(oldscope, PL_endav);
1055 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1056 dump_mstats("after execution: ");
1059 return STATUS_NATIVE_EXPORT;
1061 if (!PL_restartop) {
1062 PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
1067 POPSTACK_TO(PL_mainstack);
1071 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1072 PL_sawampersand ? "Enabling" : "Omitting"));
1074 if (!PL_restartop) {
1075 DEBUG_x(dump_all());
1076 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1077 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%lx\n",
1078 (unsigned long) thr));
1081 PerlIO_printf(PerlIO_stderr(), "%s syntax OK\n", PL_origfilename);
1084 if (PERLDB_SINGLE && PL_DBsingle)
1085 sv_setiv(PL_DBsingle, 1);
1087 call_list(oldscope, PL_initav);
1093 PL_op = PL_restartop;
1097 else if (PL_main_start) {
1098 CvDEPTH(PL_main_cv) = 1;
1099 PL_op = PL_main_start;
1109 perl_get_sv(char *name, I32 create)
1113 if (name[1] == '\0' && !isALPHA(name[0])) {
1114 PADOFFSET tmp = find_threadsv(name);
1115 if (tmp != NOT_IN_PAD) {
1117 return THREADSV(tmp);
1120 #endif /* USE_THREADS */
1121 gv = gv_fetchpv(name, create, SVt_PV);
1128 perl_get_av(char *name, I32 create)
1130 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1139 perl_get_hv(char *name, I32 create)
1141 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1150 perl_get_cv(char *name, I32 create)
1152 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1153 /* XXX unsafe for threads if eval_owner isn't held */
1154 if (create && !GvCVu(gv))
1155 return newSUB(start_subparse(FALSE, 0),
1156 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1164 /* Be sure to refetch the stack pointer after calling these routines. */
1167 perl_call_argv(char *sub_name, I32 flags, register char **argv)
1169 /* See G_* flags in cop.h */
1170 /* null terminated arg list */
1177 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1182 return perl_call_pv(sub_name, flags);
1186 perl_call_pv(char *sub_name, I32 flags)
1187 /* name of the subroutine */
1188 /* See G_* flags in cop.h */
1190 return perl_call_sv((SV*)perl_get_cv(sub_name, TRUE), flags);
1194 perl_call_method(char *methname, I32 flags)
1195 /* name of the subroutine */
1196 /* See G_* flags in cop.h */
1202 XPUSHs(sv_2mortal(newSVpv(methname,0)));
1207 return perl_call_sv(*PL_stack_sp--, flags);
1210 /* May be called with any of a CV, a GV, or an SV containing the name. */
1212 perl_call_sv(SV *sv, I32 flags)
1214 /* See G_* flags in cop.h */
1217 LOGOP myop; /* fake syntax tree node */
1221 bool oldcatch = CATCH_GET;
1226 if (flags & G_DISCARD) {
1231 Zero(&myop, 1, LOGOP);
1232 myop.op_next = Nullop;
1233 if (!(flags & G_NOARGS))
1234 myop.op_flags |= OPf_STACKED;
1235 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1236 (flags & G_ARRAY) ? OPf_WANT_LIST :
1241 EXTEND(PL_stack_sp, 1);
1242 *++PL_stack_sp = sv;
1244 oldscope = PL_scopestack_ix;
1246 if (PERLDB_SUB && PL_curstash != PL_debstash
1247 /* Handle first BEGIN of -d. */
1248 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1249 /* Try harder, since this may have been a sighandler, thus
1250 * curstash may be meaningless. */
1251 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1252 && !(flags & G_NODEBUG))
1253 PL_op->op_private |= OPpENTERSUB_DB;
1255 if (flags & G_EVAL) {
1256 cLOGOP->op_other = PL_op;
1258 /* we're trying to emulate pp_entertry() here */
1260 register PERL_CONTEXT *cx;
1261 I32 gimme = GIMME_V;
1266 push_return(PL_op->op_next);
1267 PUSHBLOCK(cx, CXt_EVAL, PL_stack_sp);
1269 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1272 if (flags & G_KEEPERR)
1287 /* my_exit() was called */
1288 PL_curstash = PL_defstash;
1292 croak("Callback called exit");
1297 PL_op = PL_restartop;
1301 PL_stack_sp = PL_stack_base + oldmark;
1302 if (flags & G_ARRAY)
1306 *++PL_stack_sp = &PL_sv_undef;
1314 if (PL_op == (OP*)&myop)
1315 PL_op = pp_entersub(ARGS);
1318 retval = PL_stack_sp - (PL_stack_base + oldmark);
1319 if ((flags & G_EVAL) && !(flags & G_KEEPERR))
1323 if (flags & G_EVAL) {
1324 if (PL_scopestack_ix > oldscope) {
1328 register PERL_CONTEXT *cx;
1340 CATCH_SET(oldcatch);
1342 if (flags & G_DISCARD) {
1343 PL_stack_sp = PL_stack_base + oldmark;
1352 /* Eval a string. The G_EVAL flag is always assumed. */
1355 perl_eval_sv(SV *sv, I32 flags)
1357 /* See G_* flags in cop.h */
1360 UNOP myop; /* fake syntax tree node */
1361 I32 oldmark = SP - PL_stack_base;
1368 if (flags & G_DISCARD) {
1375 Zero(PL_op, 1, UNOP);
1376 EXTEND(PL_stack_sp, 1);
1377 *++PL_stack_sp = sv;
1378 oldscope = PL_scopestack_ix;
1380 if (!(flags & G_NOARGS))
1381 myop.op_flags = OPf_STACKED;
1382 myop.op_next = Nullop;
1383 myop.op_type = OP_ENTEREVAL;
1384 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1385 (flags & G_ARRAY) ? OPf_WANT_LIST :
1387 if (flags & G_KEEPERR)
1388 myop.op_flags |= OPf_SPECIAL;
1398 /* my_exit() was called */
1399 PL_curstash = PL_defstash;
1403 croak("Callback called exit");
1408 PL_op = PL_restartop;
1412 PL_stack_sp = PL_stack_base + oldmark;
1413 if (flags & G_ARRAY)
1417 *++PL_stack_sp = &PL_sv_undef;
1422 if (PL_op == (OP*)&myop)
1423 PL_op = pp_entereval(ARGS);
1426 retval = PL_stack_sp - (PL_stack_base + oldmark);
1427 if (!(flags & G_KEEPERR))
1432 if (flags & G_DISCARD) {
1433 PL_stack_sp = PL_stack_base + oldmark;
1443 perl_eval_pv(char *p, I32 croak_on_error)
1446 SV* sv = newSVpv(p, 0);
1449 perl_eval_sv(sv, G_SCALAR);
1456 if (croak_on_error && SvTRUE(ERRSV)) {
1458 croak(SvPVx(ERRSV, n_a));
1464 /* Require a module. */
1467 perl_require_pv(char *pv)
1471 PUSHSTACKi(PERLSI_REQUIRE);
1473 sv = sv_newmortal();
1474 sv_setpv(sv, "require '");
1477 perl_eval_sv(sv, G_DISCARD);
1483 magicname(char *sym, char *name, I32 namlen)
1487 if (gv = gv_fetchpv(sym,TRUE, SVt_PV))
1488 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1492 usage(char *name) /* XXX move this out into a module ? */
1495 /* This message really ought to be max 23 lines.
1496 * Removed -h because the user already knows that opton. Others? */
1498 static char *usage_msg[] = {
1499 "-0[octal] specify record separator (\\0, if no argument)",
1500 "-a autosplit mode with -n or -p (splits $_ into @F)",
1501 "-c check syntax only (runs BEGIN and END blocks)",
1502 "-d[:debugger] run scripts under debugger",
1503 "-D[number/list] set debugging flags (argument is a bit mask or flags)",
1504 "-e 'command' one line of script. Several -e's allowed. Omit [programfile].",
1505 "-F/pattern/ split() pattern for autosplit (-a). The //'s are optional.",
1506 "-i[extension] edit <> files in place (make backup if extension supplied)",
1507 "-Idirectory specify @INC/#include directory (may be used more than once)",
1508 "-l[octal] enable line ending processing, specifies line terminator",
1509 "-[mM][-]module.. executes `use/no module...' before executing your script.",
1510 "-n assume 'while (<>) { ... }' loop around your script",
1511 "-p assume loop like -n but print line also like sed",
1512 "-P run script through C preprocessor before compilation",
1513 "-s enable some switch parsing for switches after script name",
1514 "-S look for the script using PATH environment variable",
1515 "-T turn on tainting checks",
1516 "-u dump core after parsing script",
1517 "-U allow unsafe operations",
1518 "-v print version number, patchlevel plus VERY IMPORTANT perl info",
1519 "-V[:variable] print perl configuration information",
1520 "-w TURN WARNINGS ON FOR COMPILATION OF YOUR SCRIPT. Recommended.",
1521 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
1525 char **p = usage_msg;
1527 printf("\nUsage: %s [switches] [--] [programfile] [arguments]", name);
1529 printf("\n %s", *p++);
1532 /* This routine handles any switches that can be given during run */
1535 moreswitches(char *s)
1544 rschar = scan_oct(s, 4, &numlen);
1545 SvREFCNT_dec(PL_nrs);
1546 if (rschar & ~((U8)~0))
1547 PL_nrs = &PL_sv_undef;
1548 else if (!rschar && numlen >= 2)
1549 PL_nrs = newSVpv("", 0);
1552 PL_nrs = newSVpv(&ch, 1);
1558 PL_splitstr = savepv(s + 1);
1572 if (*s == ':' || *s == '=') {
1573 my_setenv("PERL5DB", form("use Devel::%s;", ++s));
1577 PL_perldb = PERLDB_ALL;
1584 if (isALPHA(s[1])) {
1585 static char debopts[] = "psltocPmfrxuLHXDS";
1588 for (s++; *s && (d = strchr(debopts,*s)); s++)
1589 PL_debug |= 1 << (d - debopts);
1592 PL_debug = atoi(s+1);
1593 for (s++; isDIGIT(*s); s++) ;
1595 PL_debug |= 0x80000000;
1597 warn("Recompile perl with -DDEBUGGING to use -D switch\n");
1598 for (s++; isALNUM(*s); s++) ;
1603 usage(PL_origargv[0]);
1607 Safefree(PL_inplace);
1608 PL_inplace = savepv(s+1);
1610 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
1613 if (*s == '-') /* Additional switches on #! line. */
1617 case 'I': /* -I handled both here and in parse_perl() */
1620 while (*s && isSPACE(*s))
1624 for (e = s; *e && !isSPACE(*e); e++) ;
1625 p = savepvn(s, e-s);
1631 croak("No space allowed after -I");
1639 PL_ors = savepv("\n");
1641 *PL_ors = scan_oct(s, 3 + (*s == '0'), &numlen);
1646 if (RsPARA(PL_nrs)) {
1651 PL_ors = SvPV(PL_nrs, PL_orslen);
1652 PL_ors = savepvn(PL_ors, PL_orslen);
1656 forbid_setid("-M"); /* XXX ? */
1659 forbid_setid("-m"); /* XXX ? */
1664 /* -M-foo == 'no foo' */
1665 if (*s == '-') { use = "no "; ++s; }
1666 sv = newSVpv(use,0);
1668 /* We allow -M'Module qw(Foo Bar)' */
1669 while(isALNUM(*s) || *s==':') ++s;
1671 sv_catpv(sv, start);
1672 if (*(start-1) == 'm') {
1674 croak("Can't use '%c' after -mname", *s);
1675 sv_catpv( sv, " ()");
1678 sv_catpvn(sv, start, s-start);
1679 sv_catpv(sv, " split(/,/,q{");
1684 if (PL_preambleav == NULL)
1685 PL_preambleav = newAV();
1686 av_push(PL_preambleav, sv);
1689 croak("No space allowed after -%c", *(s-1));
1701 PL_doswitches = TRUE;
1706 croak("Too late for \"-T\" option");
1710 PL_do_undump = TRUE;
1718 #if defined(SUBVERSION) && SUBVERSION > 0
1719 printf("\nThis is perl, version 5.%03d_%02d built for %s",
1720 PATCHLEVEL, SUBVERSION, ARCHNAME);
1722 printf("\nThis is perl, version %s built for %s",
1723 PL_patchlevel, ARCHNAME);
1725 #if defined(LOCAL_PATCH_COUNT)
1726 if (LOCAL_PATCH_COUNT > 0)
1727 printf("\n(with %d registered patch%s, see perl -V for more detail)",
1728 LOCAL_PATCH_COUNT, (LOCAL_PATCH_COUNT!=1) ? "es" : "");
1731 printf("\n\nCopyright 1987-1999, Larry Wall\n");
1733 printf("\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
1736 printf("djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n");
1737 printf("djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1998\n");
1740 printf("\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
1741 "Version 5 port Copyright (c) 1994-1998, Andreas Kaiser, Ilya Zakharevich\n");
1744 printf("atariST series port, ++jrb bammi@cadence.com\n");
1747 printf("BeOS port Copyright Tom Spindler, 1997-1998\n");
1750 printf("MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1998\n");
1753 printf("MVS (OS390) port by Mortice Kern Systems, 1997-1998\n");
1756 printf("Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
1759 printf("MiNT port by Guido Flohr, 1997\n");
1761 #ifdef BINARY_BUILD_NOTICE
1762 BINARY_BUILD_NOTICE;
1765 Perl may be copied only under the terms of either the Artistic License or the\n\
1766 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
1767 Complete documentation for Perl, including FAQ lists, should be found on\n\
1768 this system using `man perl' or `perldoc perl'. If you have access to the\n\
1769 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
1777 if (s[1] == '-') /* Additional switches on #! line. */
1782 #if defined(WIN32) || !defined(PERL_STRICT_CR)
1788 #ifdef ALTERNATE_SHEBANG
1789 case 'S': /* OS/2 needs -S on "extproc" line. */
1797 croak("Can't emulate -%.1s on #! line",s);
1802 /* compliments of Tom Christiansen */
1804 /* unexec() can be found in the Gnu emacs distribution */
1805 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
1816 prog = newSVpv(BIN_EXP, 0);
1817 sv_catpv(prog, "/perl");
1818 file = newSVpv(PL_origfilename, 0);
1819 sv_catpv(file, ".perldump");
1821 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
1822 /* unexec prints msg to stderr in case of failure */
1823 PerlProc_exit(status);
1826 # include <lib$routines.h>
1827 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
1829 ABORT(); /* for use with undump */
1834 /* initialize curinterp */
1839 #ifdef PERL_OBJECT /* XXX kludge */
1842 PL_chopset = " \n-"; \
1843 PL_copline = NOLINE; \
1844 PL_curcop = &PL_compiling;\
1845 PL_curcopdb = NULL; \
1848 PL_laststatval = -1; \
1849 PL_laststype = OP_STAT; \
1850 PL_maxscream = -1; \
1851 PL_maxsysfd = MAXSYSFD; \
1852 PL_statname = Nullsv; \
1853 PL_tmps_floor = -1; \
1855 PL_op_mask = NULL; \
1857 PL_laststatval = -1; \
1858 PL_laststype = OP_STAT; \
1859 PL_mess_sv = Nullsv; \
1860 PL_splitstr = " "; \
1861 PL_generation = 100; \
1862 PL_exitlist = NULL; \
1863 PL_exitlistlen = 0; \
1865 PL_in_clean_objs = FALSE; \
1866 PL_in_clean_all = FALSE; \
1867 PL_profiledata = NULL; \
1869 PL_rsfp_filters = Nullav; \
1873 # ifdef MULTIPLICITY
1874 # define PERLVAR(var,type)
1875 # define PERLVARI(var,type,init) PL_curinterp->var = init;
1876 # define PERLVARIC(var,type,init) PL_curinterp->var = init;
1877 # include "intrpvar.h"
1878 # ifndef USE_THREADS
1879 # include "thrdvar.h"
1885 # define PERLVAR(var,type)
1886 # define PERLVARI(var,type,init) PL_##var = init;
1887 # define PERLVARIC(var,type,init) PL_##var = init;
1888 # include "intrpvar.h"
1889 # ifndef USE_THREADS
1890 # include "thrdvar.h"
1901 init_main_stash(void)
1906 /* Note that strtab is a rather special HV. Assumptions are made
1907 about not iterating on it, and not adding tie magic to it.
1908 It is properly deallocated in perl_destruct() */
1909 PL_strtab = newHV();
1911 MUTEX_INIT(&PL_strtab_mutex);
1913 HvSHAREKEYS_off(PL_strtab); /* mandatory */
1914 hv_ksplit(PL_strtab, 512);
1916 PL_curstash = PL_defstash = newHV();
1917 PL_curstname = newSVpv("main",4);
1918 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
1919 SvREFCNT_dec(GvHV(gv));
1920 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
1922 HvNAME(PL_defstash) = savepv("main");
1923 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
1924 GvMULTI_on(PL_incgv);
1925 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
1926 GvMULTI_on(PL_hintgv);
1927 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
1928 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
1929 GvMULTI_on(PL_errgv);
1930 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
1931 GvMULTI_on(PL_replgv);
1932 (void)form("%240s",""); /* Preallocate temp - for immediate signals. */
1933 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
1934 sv_setpvn(ERRSV, "", 0);
1935 PL_curstash = PL_defstash;
1936 PL_compiling.cop_stash = PL_defstash;
1937 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
1938 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
1939 /* We must init $/ before switches are processed. */
1940 sv_setpvn(perl_get_sv("/", TRUE), "\n", 1);
1944 open_script(char *scriptname, bool dosearch, SV *sv, int *fdscript)
1952 PL_origfilename = savepv("-e");
1955 /* if find_script() returns, it returns a malloc()-ed value */
1956 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
1958 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
1959 char *s = scriptname + 8;
1960 *fdscript = atoi(s);
1964 scriptname = savepv(s + 1);
1965 Safefree(PL_origfilename);
1966 PL_origfilename = scriptname;
1971 PL_curcop->cop_filegv = gv_fetchfile(PL_origfilename);
1972 if (strEQ(PL_origfilename,"-"))
1974 if (*fdscript >= 0) {
1975 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
1976 #if defined(HAS_FCNTL) && defined(F_SETFD)
1978 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
1981 else if (PL_preprocess) {
1982 char *cpp_cfg = CPPSTDIN;
1983 SV *cpp = newSVpv("",0);
1984 SV *cmd = NEWSV(0,0);
1986 if (strEQ(cpp_cfg, "cppstdin"))
1987 sv_catpvf(cpp, "%s/", BIN_EXP);
1988 sv_catpv(cpp, cpp_cfg);
1991 sv_catpv(sv,PRIVLIB_EXP);
1995 sed %s -e \"/^[^#]/b\" \
1996 -e \"/^#[ ]*include[ ]/b\" \
1997 -e \"/^#[ ]*define[ ]/b\" \
1998 -e \"/^#[ ]*if[ ]/b\" \
1999 -e \"/^#[ ]*ifdef[ ]/b\" \
2000 -e \"/^#[ ]*ifndef[ ]/b\" \
2001 -e \"/^#[ ]*else/b\" \
2002 -e \"/^#[ ]*elif[ ]/b\" \
2003 -e \"/^#[ ]*undef[ ]/b\" \
2004 -e \"/^#[ ]*endif/b\" \
2007 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2010 %s %s -e '/^[^#]/b' \
2011 -e '/^#[ ]*include[ ]/b' \
2012 -e '/^#[ ]*define[ ]/b' \
2013 -e '/^#[ ]*if[ ]/b' \
2014 -e '/^#[ ]*ifdef[ ]/b' \
2015 -e '/^#[ ]*ifndef[ ]/b' \
2016 -e '/^#[ ]*else/b' \
2017 -e '/^#[ ]*elif[ ]/b' \
2018 -e '/^#[ ]*undef[ ]/b' \
2019 -e '/^#[ ]*endif/b' \
2027 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2029 scriptname, cpp, sv, CPPMINUS);
2030 PL_doextract = FALSE;
2031 #ifdef IAMSUID /* actually, this is caught earlier */
2032 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2034 (void)seteuid(PL_uid); /* musn't stay setuid root */
2037 (void)setreuid((Uid_t)-1, PL_uid);
2039 #ifdef HAS_SETRESUID
2040 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2042 PerlProc_setuid(PL_uid);
2046 if (PerlProc_geteuid() != PL_uid)
2047 croak("Can't do seteuid!\n");
2049 #endif /* IAMSUID */
2050 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2054 else if (!*scriptname) {
2055 forbid_setid("program input from stdin");
2056 PL_rsfp = PerlIO_stdin();
2059 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2060 #if defined(HAS_FCNTL) && defined(F_SETFD)
2062 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2067 #ifndef IAMSUID /* in case script is not readable before setuid */
2069 PerlLIO_stat(SvPVX(GvSV(PL_curcop->cop_filegv)),&PL_statbuf) >= 0 &&
2070 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2073 PerlProc_execv(form("%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv);
2074 croak("Can't do setuid\n");
2078 croak("Can't open perl script \"%s\": %s\n",
2079 SvPVX(GvSV(PL_curcop->cop_filegv)), Strerror(errno));
2085 fd_on_nosuid_fs(int fd)
2090 * Preferred order: fstatvfs(), fstatfs(), getmntent().
2091 * fstatvfs() is UNIX98.
2093 * getmntent() is O(number-of-mounted-filesystems) and can hang.
2096 # ifdef HAS_FSTATVFS
2097 struct statvfs stfs;
2098 check_okay = fstatvfs(fd, &stfs) == 0;
2099 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2101 # if defined(HAS_FSTATFS) && defined(HAS_STRUCT_STATFS_FLAGS)
2103 check_okay = fstatfs(fd, &stfs) == 0;
2104 # undef PERL_MOUNT_NOSUID
2105 # if !defined(PERL_MOUNT_NOSUID) && defined(MNT_NOSUID)
2106 # define PERL_MOUNT_NOSUID MNT_NOSUID
2108 # if !defined(PERL_MOUNT_NOSUID) && defined(MS_NOSUID)
2109 # define PERL_MOUNT_NOSUID MS_NOSUID
2111 # if !defined(PERL_MOUNT_NOSUID) && defined(M_NOSUID)
2112 # define PERL_MOUNT_NOSUID M_NOSUID
2114 # ifdef PERL_MOUNT_NOSUID
2115 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2118 # if defined(HAS_GETMNTENT) && defined(HAS_HASMNTOPT) && defined(MNTOPT_NOSUID)
2119 FILE *mtab = fopen("/etc/mtab", "r");
2120 struct mntent *entry;
2121 struct stat stb, fsb;
2123 if (mtab && (fstat(fd, &stb) == 0)) {
2124 while (entry = getmntent(mtab)) {
2125 if (stat(entry->mnt_dir, &fsb) == 0
2126 && fsb.st_dev == stb.st_dev)
2128 /* found the filesystem */
2130 if (hasmntopt(entry, MNTOPT_NOSUID))
2133 } /* A single fs may well fail its stat(). */
2138 # endif /* mntent */
2139 # endif /* statfs */
2140 # endif /* statvfs */
2142 croak("Can't check filesystem of script \"%s\" for nosuid",
2146 #endif /* IAMSUID */
2149 validate_suid(char *validarg, char *scriptname, int fdscript)
2153 /* do we need to emulate setuid on scripts? */
2155 /* This code is for those BSD systems that have setuid #! scripts disabled
2156 * in the kernel because of a security problem. Merely defining DOSUID
2157 * in perl will not fix that problem, but if you have disabled setuid
2158 * scripts in the kernel, this will attempt to emulate setuid and setgid
2159 * on scripts that have those now-otherwise-useless bits set. The setuid
2160 * root version must be called suidperl or sperlN.NNN. If regular perl
2161 * discovers that it has opened a setuid script, it calls suidperl with
2162 * the same argv that it had. If suidperl finds that the script it has
2163 * just opened is NOT setuid root, it sets the effective uid back to the
2164 * uid. We don't just make perl setuid root because that loses the
2165 * effective uid we had before invoking perl, if it was different from the
2168 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2169 * be defined in suidperl only. suidperl must be setuid root. The
2170 * Configure script will set this up for you if you want it.
2177 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2178 croak("Can't stat script \"%s\"",PL_origfilename);
2179 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2184 #ifndef HAS_SETREUID
2185 /* On this access check to make sure the directories are readable,
2186 * there is actually a small window that the user could use to make
2187 * filename point to an accessible directory. So there is a faint
2188 * chance that someone could execute a setuid script down in a
2189 * non-accessible directory. I don't know what to do about that.
2190 * But I don't think it's too important. The manual lies when
2191 * it says access() is useful in setuid programs.
2193 if (PerlLIO_access(SvPVX(GvSV(PL_curcop->cop_filegv)),1)) /*double check*/
2194 croak("Permission denied");
2196 /* If we can swap euid and uid, then we can determine access rights
2197 * with a simple stat of the file, and then compare device and
2198 * inode to make sure we did stat() on the same file we opened.
2199 * Then we just have to make sure he or she can execute it.
2202 struct stat tmpstatbuf;
2206 setreuid(PL_euid,PL_uid) < 0
2209 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2212 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2213 croak("Can't swap uid and euid"); /* really paranoid */
2214 if (PerlLIO_stat(SvPVX(GvSV(PL_curcop->cop_filegv)),&tmpstatbuf) < 0)
2215 croak("Permission denied"); /* testing full pathname here */
2216 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2217 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2218 croak("Permission denied");
2220 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2221 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2222 (void)PerlIO_close(PL_rsfp);
2223 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2224 PerlIO_printf(PL_rsfp,
2225 "User %ld tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2226 (Filename of set-id script was %s, uid %ld gid %ld.)\n\nSincerely,\nperl\n",
2227 (long)PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2228 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
2229 SvPVX(GvSV(PL_curcop->cop_filegv)),
2230 (long)PL_statbuf.st_uid, (long)PL_statbuf.st_gid);
2231 (void)PerlProc_pclose(PL_rsfp);
2233 croak("Permission denied\n");
2237 setreuid(PL_uid,PL_euid) < 0
2239 # if defined(HAS_SETRESUID)
2240 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2243 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2244 croak("Can't reswap uid and euid");
2245 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2246 croak("Permission denied\n");
2248 #endif /* HAS_SETREUID */
2249 #endif /* IAMSUID */
2251 if (!S_ISREG(PL_statbuf.st_mode))
2252 croak("Permission denied");
2253 if (PL_statbuf.st_mode & S_IWOTH)
2254 croak("Setuid/gid script is writable by world");
2255 PL_doswitches = FALSE; /* -s is insecure in suid */
2256 PL_curcop->cop_line++;
2257 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2258 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2259 croak("No #! line");
2260 s = SvPV(PL_linestr,n_a)+2;
2262 while (!isSPACE(*s)) s++;
2263 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2264 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2265 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2266 croak("Not a perl script");
2267 while (*s == ' ' || *s == '\t') s++;
2269 * #! arg must be what we saw above. They can invoke it by
2270 * mentioning suidperl explicitly, but they may not add any strange
2271 * arguments beyond what #! says if they do invoke suidperl that way.
2273 len = strlen(validarg);
2274 if (strEQ(validarg," PHOOEY ") ||
2275 strnNE(s,validarg,len) || !isSPACE(s[len]))
2276 croak("Args must match #! line");
2279 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2280 PL_euid == PL_statbuf.st_uid)
2282 croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2283 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2284 #endif /* IAMSUID */
2286 if (PL_euid) { /* oops, we're not the setuid root perl */
2287 (void)PerlIO_close(PL_rsfp);
2290 PerlProc_execv(form("%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv);
2292 croak("Can't do setuid\n");
2295 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2297 (void)setegid(PL_statbuf.st_gid);
2300 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2302 #ifdef HAS_SETRESGID
2303 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2305 PerlProc_setgid(PL_statbuf.st_gid);
2309 if (PerlProc_getegid() != PL_statbuf.st_gid)
2310 croak("Can't do setegid!\n");
2312 if (PL_statbuf.st_mode & S_ISUID) {
2313 if (PL_statbuf.st_uid != PL_euid)
2315 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2318 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2320 #ifdef HAS_SETRESUID
2321 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2323 PerlProc_setuid(PL_statbuf.st_uid);
2327 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2328 croak("Can't do seteuid!\n");
2330 else if (PL_uid) { /* oops, mustn't run as root */
2332 (void)seteuid((Uid_t)PL_uid);
2335 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2337 #ifdef HAS_SETRESUID
2338 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2340 PerlProc_setuid((Uid_t)PL_uid);
2344 if (PerlProc_geteuid() != PL_uid)
2345 croak("Can't do seteuid!\n");
2348 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2349 croak("Permission denied\n"); /* they can't do this */
2352 else if (PL_preprocess)
2353 croak("-P not allowed for setuid/setgid script\n");
2354 else if (fdscript >= 0)
2355 croak("fd script not allowed in suidperl\n");
2357 croak("Script is not setuid/setgid in suidperl\n");
2359 /* We absolutely must clear out any saved ids here, so we */
2360 /* exec the real perl, substituting fd script for scriptname. */
2361 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2362 PerlIO_rewind(PL_rsfp);
2363 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2364 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2365 if (!PL_origargv[which])
2366 croak("Permission denied");
2367 PL_origargv[which] = savepv(form("/dev/fd/%d/%s",
2368 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
2369 #if defined(HAS_FCNTL) && defined(F_SETFD)
2370 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
2372 PerlProc_execv(form("%s/perl%s", BIN_EXP, PL_patchlevel), PL_origargv);/* try again */
2373 croak("Can't do setuid\n");
2374 #endif /* IAMSUID */
2376 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
2377 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
2379 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
2380 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
2382 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
2385 croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2386 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2387 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
2388 /* not set-id, must be wrapped */
2394 find_beginning(void)
2396 register char *s, *s2;
2398 /* skip forward in input to the real script? */
2401 while (PL_doextract) {
2402 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
2403 croak("No Perl script found in input\n");
2404 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
2405 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
2406 PL_doextract = FALSE;
2407 while (*s && !(isSPACE (*s) || *s == '#')) s++;
2409 while (*s == ' ' || *s == '\t') s++;
2411 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
2412 if (strnEQ(s2-4,"perl",4))
2414 while (s = moreswitches(s)) ;
2416 if (PL_cddir && PerlDir_chdir(PL_cddir) < 0)
2417 croak("Can't chdir to %s",PL_cddir);
2426 PL_uid = (int)PerlProc_getuid();
2427 PL_euid = (int)PerlProc_geteuid();
2428 PL_gid = (int)PerlProc_getgid();
2429 PL_egid = (int)PerlProc_getegid();
2431 PL_uid |= PL_gid << 16;
2432 PL_euid |= PL_egid << 16;
2434 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
2438 forbid_setid(char *s)
2440 if (PL_euid != PL_uid)
2441 croak("No %s allowed while running setuid", s);
2442 if (PL_egid != PL_gid)
2443 croak("No %s allowed while running setgid", s);
2450 PL_curstash = PL_debstash;
2451 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
2452 AvREAL_off(PL_dbargs);
2453 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
2454 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
2455 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
2456 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
2457 sv_setiv(PL_DBsingle, 0);
2458 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
2459 sv_setiv(PL_DBtrace, 0);
2460 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
2461 sv_setiv(PL_DBsignal, 0);
2462 PL_curstash = PL_defstash;
2465 #ifndef STRESS_REALLOC
2466 #define REASONABLE(size) (size)
2468 #define REASONABLE(size) (1) /* unreasonable */
2472 init_stacks(ARGSproto)
2474 /* start with 128-item stack and 8K cxstack */
2475 PL_curstackinfo = new_stackinfo(REASONABLE(128),
2476 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
2477 PL_curstackinfo->si_type = PERLSI_MAIN;
2478 PL_curstack = PL_curstackinfo->si_stack;
2479 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
2481 PL_stack_base = AvARRAY(PL_curstack);
2482 PL_stack_sp = PL_stack_base;
2483 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
2485 New(50,PL_tmps_stack,REASONABLE(128),SV*);
2488 PL_tmps_max = REASONABLE(128);
2490 New(54,PL_markstack,REASONABLE(32),I32);
2491 PL_markstack_ptr = PL_markstack;
2492 PL_markstack_max = PL_markstack + REASONABLE(32);
2496 New(54,PL_scopestack,REASONABLE(32),I32);
2497 PL_scopestack_ix = 0;
2498 PL_scopestack_max = REASONABLE(32);
2500 New(54,PL_savestack,REASONABLE(128),ANY);
2501 PL_savestack_ix = 0;
2502 PL_savestack_max = REASONABLE(128);
2504 New(54,PL_retstack,REASONABLE(16),OP*);
2506 PL_retstack_max = REASONABLE(16);
2515 while (PL_curstackinfo->si_next)
2516 PL_curstackinfo = PL_curstackinfo->si_next;
2517 while (PL_curstackinfo) {
2518 PERL_SI *p = PL_curstackinfo->si_prev;
2519 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
2520 Safefree(PL_curstackinfo->si_cxstack);
2521 Safefree(PL_curstackinfo);
2522 PL_curstackinfo = p;
2524 Safefree(PL_tmps_stack);
2525 Safefree(PL_markstack);
2526 Safefree(PL_scopestack);
2527 Safefree(PL_savestack);
2528 Safefree(PL_retstack);
2530 Safefree(PL_debname);
2531 Safefree(PL_debdelim);
2536 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
2547 lex_start(PL_linestr);
2549 PL_subname = newSVpv("main",4);
2553 init_predump_symbols(void)
2559 sv_setpvn(perl_get_sv("\"", TRUE), " ", 1);
2560 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
2561 GvMULTI_on(PL_stdingv);
2562 IoIFP(GvIOp(PL_stdingv)) = PerlIO_stdin();
2563 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
2565 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(PL_stdingv));
2567 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
2569 IoOFP(GvIOp(tmpgv)) = IoIFP(GvIOp(tmpgv)) = PerlIO_stdout();
2571 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
2573 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(PL_defoutgv));
2575 othergv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
2576 GvMULTI_on(othergv);
2577 IoOFP(GvIOp(othergv)) = IoIFP(GvIOp(othergv)) = PerlIO_stderr();
2578 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
2580 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(othergv));
2582 PL_statname = NEWSV(66,0); /* last filename we did stat on */
2585 PL_osname = savepv(OSNAME);
2589 init_postdump_symbols(register int argc, register char **argv, register char **env)
2596 argc--,argv++; /* skip name of script */
2597 if (PL_doswitches) {
2598 for (; argc > 0 && **argv == '-'; argc--,argv++) {
2601 if (argv[0][1] == '-') {
2605 if (s = strchr(argv[0], '=')) {
2607 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
2610 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
2613 PL_toptarget = NEWSV(0,0);
2614 sv_upgrade(PL_toptarget, SVt_PVFM);
2615 sv_setpvn(PL_toptarget, "", 0);
2616 PL_bodytarget = NEWSV(0,0);
2617 sv_upgrade(PL_bodytarget, SVt_PVFM);
2618 sv_setpvn(PL_bodytarget, "", 0);
2619 PL_formtarget = PL_bodytarget;
2622 if (tmpgv = gv_fetchpv("0",TRUE, SVt_PV)) {
2623 sv_setpv(GvSV(tmpgv),PL_origfilename);
2624 magicname("0", "0", 1);
2626 if (tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))
2627 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
2628 if (PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV)) {
2629 GvMULTI_on(PL_argvgv);
2630 (void)gv_AVadd(PL_argvgv);
2631 av_clear(GvAVn(PL_argvgv));
2632 for (; argc > 0; argc--,argv++) {
2633 av_push(GvAVn(PL_argvgv),newSVpv(argv[0],0));
2636 if (PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV)) {
2638 GvMULTI_on(PL_envgv);
2639 hv = GvHVn(PL_envgv);
2640 hv_magic(hv, PL_envgv, 'E');
2641 #ifndef VMS /* VMS doesn't have environ array */
2642 /* Note that if the supplied env parameter is actually a copy
2643 of the global environ then it may now point to free'd memory
2644 if the environment has been modified since. To avoid this
2645 problem we treat env==NULL as meaning 'use the default'
2650 environ[0] = Nullch;
2651 for (; *env; env++) {
2652 if (!(s = strchr(*env,'=')))
2658 sv = newSVpv(s--,0);
2659 (void)hv_store(hv, *env, s - *env, sv, 0);
2661 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
2662 /* Sins of the RTL. See note in my_setenv(). */
2663 (void)PerlEnv_putenv(savepv(*env));
2667 #ifdef DYNAMIC_ENV_FETCH
2668 HvNAME(hv) = savepv(ENV_HV_NAME);
2672 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
2673 sv_setiv(GvSV(tmpgv), (IV)getpid());
2682 s = PerlEnv_getenv("PERL5LIB");
2686 incpush(PerlEnv_getenv("PERLLIB"), FALSE);
2688 /* Treat PERL5?LIB as a possible search list logical name -- the
2689 * "natural" VMS idiom for a Unix path string. We allow each
2690 * element to be a set of |-separated directories for compatibility.
2694 if (my_trnlnm("PERL5LIB",buf,0))
2695 do { incpush(buf,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
2697 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE);
2701 /* Use the ~-expanded versions of APPLLIB (undocumented),
2702 ARCHLIB PRIVLIB SITEARCH and SITELIB
2705 incpush(APPLLIB_EXP, TRUE);
2709 incpush(SITEARCH_EXP, FALSE);
2713 incpush(SITELIB_EXP, TRUE);
2715 incpush(SITELIB_EXP, FALSE);
2719 incpush(".", FALSE);
2722 incpush(ARCHLIB_EXP, FALSE);
2725 #define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
2728 incpush(PRIVLIB_EXP, TRUE);
2730 incpush(PRIVLIB_EXP, FALSE);
2735 # define PERLLIB_SEP ';'
2738 # define PERLLIB_SEP '|'
2740 # define PERLLIB_SEP ':'
2743 #ifndef PERLLIB_MANGLE
2744 # define PERLLIB_MANGLE(s,n) (s)
2748 incpush(char *p, int addsubdirs)
2750 SV *subdir = Nullsv;
2756 subdir = sv_newmortal();
2757 if (!PL_archpat_auto) {
2758 STRLEN len = (sizeof(ARCHNAME) + strlen(PL_patchlevel)
2759 + sizeof("//auto"));
2760 New(55, PL_archpat_auto, len, char);
2761 sprintf(PL_archpat_auto, "/%s/%s/auto", ARCHNAME, PL_patchlevel);
2763 for (len = sizeof(ARCHNAME) + 2;
2764 PL_archpat_auto[len] != '\0' && PL_archpat_auto[len] != '/'; len++)
2765 if (PL_archpat_auto[len] == '.') PL_archpat_auto[len] = '_';
2770 /* Break at all separators */
2772 SV *libdir = NEWSV(55,0);
2775 /* skip any consecutive separators */
2776 while ( *p == PERLLIB_SEP ) {
2777 /* Uncomment the next line for PATH semantics */
2778 /* av_push(GvAVn(PL_incgv), newSVpv(".", 1)); */
2782 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
2783 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
2788 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
2789 p = Nullch; /* break out */
2793 * BEFORE pushing libdir onto @INC we may first push version- and
2794 * archname-specific sub-directories.
2797 struct stat tmpstatbuf;
2802 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
2804 while (unix[len-1] == '/') len--; /* Cosmetic */
2805 sv_usepvn(libdir,unix,len);
2808 PerlIO_printf(PerlIO_stderr(),
2809 "Failed to unixify @INC element \"%s\"\n",
2812 /* .../archname/version if -d .../archname/version/auto */
2813 sv_setsv(subdir, libdir);
2814 sv_catpv(subdir, PL_archpat_auto);
2815 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2816 S_ISDIR(tmpstatbuf.st_mode))
2817 av_push(GvAVn(PL_incgv),
2818 newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2820 /* .../archname if -d .../archname/auto */
2821 sv_insert(subdir, SvCUR(libdir) + sizeof(ARCHNAME),
2822 strlen(PL_patchlevel) + 1, "", 0);
2823 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2824 S_ISDIR(tmpstatbuf.st_mode))
2825 av_push(GvAVn(PL_incgv),
2826 newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2829 /* finally push this lib directory on the end of @INC */
2830 av_push(GvAVn(PL_incgv), libdir);
2835 STATIC struct perl_thread *
2838 struct perl_thread *thr;
2841 Newz(53, thr, 1, struct perl_thread);
2842 PL_curcop = &PL_compiling;
2843 thr->cvcache = newHV();
2844 thr->threadsv = newAV();
2845 /* thr->threadsvp is set when find_threadsv is called */
2846 thr->specific = newAV();
2847 thr->errhv = newHV();
2848 thr->flags = THRf_R_JOINABLE;
2849 MUTEX_INIT(&thr->mutex);
2850 /* Handcraft thrsv similarly to mess_sv */
2851 New(53, PL_thrsv, 1, SV);
2852 Newz(53, xpv, 1, XPV);
2853 SvFLAGS(PL_thrsv) = SVt_PV;
2854 SvANY(PL_thrsv) = (void*)xpv;
2855 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
2856 SvPVX(PL_thrsv) = (char*)thr;
2857 SvCUR_set(PL_thrsv, sizeof(thr));
2858 SvLEN_set(PL_thrsv, sizeof(thr));
2859 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
2860 thr->oursv = PL_thrsv;
2861 PL_chopset = " \n-";
2863 MUTEX_LOCK(&PL_threads_mutex);
2868 MUTEX_UNLOCK(&PL_threads_mutex);
2870 #ifdef HAVE_THREAD_INTERN
2871 init_thread_intern(thr);
2874 #ifdef SET_THREAD_SELF
2875 SET_THREAD_SELF(thr);
2877 thr->self = pthread_self();
2878 #endif /* SET_THREAD_SELF */
2882 * These must come after the SET_THR because sv_setpvn does
2883 * SvTAINT and the taint fields require dTHR.
2885 PL_toptarget = NEWSV(0,0);
2886 sv_upgrade(PL_toptarget, SVt_PVFM);
2887 sv_setpvn(PL_toptarget, "", 0);
2888 PL_bodytarget = NEWSV(0,0);
2889 sv_upgrade(PL_bodytarget, SVt_PVFM);
2890 sv_setpvn(PL_bodytarget, "", 0);
2891 PL_formtarget = PL_bodytarget;
2892 thr->errsv = newSVpv("", 0);
2893 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
2896 PL_regcompp = FUNC_NAME_TO_PTR(pregcomp);
2897 PL_regexecp = FUNC_NAME_TO_PTR(regexec_flags);
2899 PL_reginterp_cnt = 0;
2903 #endif /* USE_THREADS */
2906 call_list(I32 oldscope, AV *paramList)
2909 line_t oldline = PL_curcop->cop_line;
2914 while (AvFILL(paramList) >= 0) {
2915 CV *cv = (CV*)av_shift(paramList);
2923 PUSHMARK(PL_stack_sp);
2924 perl_call_sv((SV*)cv, G_EVAL|G_DISCARD);
2925 (void)SvPV(atsv, len);
2928 PL_curcop = &PL_compiling;
2929 PL_curcop->cop_line = oldline;
2930 if (paramList == PL_beginav)
2931 sv_catpv(atsv, "BEGIN failed--compilation aborted");
2933 sv_catpv(atsv, "END failed--cleanup aborted");
2934 while (PL_scopestack_ix > oldscope)
2936 croak("%s", SvPVX(atsv));
2944 /* my_exit() was called */
2945 while (PL_scopestack_ix > oldscope)
2948 PL_curstash = PL_defstash;
2950 call_list(oldscope, PL_endav);
2952 PL_curcop = &PL_compiling;
2953 PL_curcop->cop_line = oldline;
2954 if (PL_statusvalue) {
2955 if (paramList == PL_beginav)
2956 croak("BEGIN failed--compilation aborted");
2958 croak("END failed--cleanup aborted");
2963 if (!PL_restartop) {
2964 PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
2969 PL_curcop = &PL_compiling;
2970 PL_curcop->cop_line = oldline;
2982 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
2983 thr, (unsigned long) status));
2992 STATUS_NATIVE_SET(status);
2999 my_failure_exit(void)
3002 if (vaxc$errno & 1) {
3003 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3004 STATUS_NATIVE_SET(44);
3007 if (!vaxc$errno && errno) /* unlikely */
3008 STATUS_NATIVE_SET(44);
3010 STATUS_NATIVE_SET(vaxc$errno);
3015 STATUS_POSIX_SET(errno);
3017 exitstatus = STATUS_POSIX >> 8;
3018 if (exitstatus & 255)
3019 STATUS_POSIX_SET(exitstatus);
3021 STATUS_POSIX_SET(255);
3031 register PERL_CONTEXT *cx;
3036 SvREFCNT_dec(PL_e_script);
3037 PL_e_script = Nullsv;
3040 POPSTACK_TO(PL_mainstack);
3041 if (cxstack_ix >= 0) {
3044 POPBLOCK(cx,PL_curpm);
3053 #endif /* PERL_OBJECT */
3059 read_e_script(CPerlObj *pPerl, int idx, SV *buf_sv, int maxlen)
3061 read_e_script(int idx, SV *buf_sv, int maxlen)
3065 p = SvPVX(PL_e_script);
3066 nl = strchr(p, '\n');
3067 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3069 filter_del(read_e_script);
3072 sv_catpvn(buf_sv, p, nl-p);
3073 sv_chop(PL_e_script, nl);