3 * Copyright (c) 1987-2000 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
15 #define PERL_IN_PERL_C
17 #include "patchlevel.h" /* for local_patches */
19 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
24 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
25 char *getenv (char *); /* Usually in <stdlib.h> */
28 static I32 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen);
36 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
43 #define perl_construct Perl_construct
44 #define perl_parse Perl_parse
45 #define perl_run Perl_run
46 #define perl_destruct Perl_destruct
47 #define perl_free Perl_free
50 #if defined(USE_THREADS)
51 # define INIT_TLS_AND_INTERP \
53 if (!PL_curinterp) { \
54 PERL_SET_INTERP(my_perl); \
60 # if defined(USE_ITHREADS)
61 # define INIT_TLS_AND_INTERP \
63 if (!PL_curinterp) { \
64 PERL_SET_INTERP(my_perl); \
68 PERL_SET_THX(my_perl); \
71 # define INIT_TLS_AND_INTERP \
73 if (!PL_curinterp) { \
74 PERL_SET_INTERP(my_perl); \
76 PERL_SET_THX(my_perl); \
81 #ifdef PERL_IMPLICIT_SYS
83 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
84 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
85 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
86 struct IPerlDir* ipD, struct IPerlSock* ipS,
87 struct IPerlProc* ipP)
89 PerlInterpreter *my_perl;
91 my_perl = (PerlInterpreter*)new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd,
92 ipLIO, ipD, ipS, ipP);
95 /* New() needs interpreter, so call malloc() instead */
96 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
98 Zero(my_perl, 1, PerlInterpreter);
115 =for apidoc perl_alloc
117 Allocates a new Perl interpreter. See L<perlembed>.
125 PerlInterpreter *my_perl;
127 /* New() needs interpreter, so call malloc() instead */
128 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
131 Zero(my_perl, 1, PerlInterpreter);
134 #endif /* PERL_IMPLICIT_SYS */
137 =for apidoc perl_construct
139 Initializes a new Perl interpreter. See L<perlembed>.
145 perl_construct(pTHXx)
150 struct perl_thread *thr = NULL;
151 #endif /* FAKE_THREADS */
152 #endif /* USE_THREADS */
156 PL_perl_destruct_level = 1;
158 if (PL_perl_destruct_level > 0)
162 /* Init the real globals (and main thread)? */
165 MUTEX_INIT(&PL_sv_mutex);
167 * Safe to use basic SV functions from now on (though
168 * not things like mortals or tainting yet).
170 MUTEX_INIT(&PL_eval_mutex);
171 COND_INIT(&PL_eval_cond);
172 MUTEX_INIT(&PL_threads_mutex);
173 COND_INIT(&PL_nthreads_cond);
174 # ifdef EMULATE_ATOMIC_REFCOUNTS
175 MUTEX_INIT(&PL_svref_mutex);
176 # endif /* EMULATE_ATOMIC_REFCOUNTS */
178 MUTEX_INIT(&PL_cred_mutex);
180 thr = init_main_thread();
181 #endif /* USE_THREADS */
183 #ifdef PERL_FLEXIBLE_EXCEPTIONS
184 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
187 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
189 PL_linestr = NEWSV(65,79);
190 sv_upgrade(PL_linestr,SVt_PVIV);
192 if (!SvREADONLY(&PL_sv_undef)) {
193 /* set read-only and try to insure than we wont see REFCNT==0
196 SvREADONLY_on(&PL_sv_undef);
197 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
199 sv_setpv(&PL_sv_no,PL_No);
201 SvREADONLY_on(&PL_sv_no);
202 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
204 sv_setpv(&PL_sv_yes,PL_Yes);
206 SvREADONLY_on(&PL_sv_yes);
207 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
212 /* PL_sighandlerp = sighandler; */
214 PL_sighandlerp = Perl_sighandler;
216 PL_pidstatus = newHV();
220 * There is no way we can refer to them from Perl so close them to save
221 * space. The other alternative would be to provide STDAUX and STDPRN
224 (void)fclose(stdaux);
225 (void)fclose(stdprn);
229 PL_nrs = newSVpvn("\n", 1);
230 PL_rs = SvREFCNT_inc(PL_nrs);
235 PL_lex_state = LEX_NOTPARSING;
241 SET_NUMERIC_STANDARD();
245 PL_patchlevel = NEWSV(0,4);
246 SvUPGRADE(PL_patchlevel, SVt_PVNV);
247 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
248 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
249 s = (U8*)SvPVX(PL_patchlevel);
250 s = uv_to_utf8(s, (UV)PERL_REVISION);
251 s = uv_to_utf8(s, (UV)PERL_VERSION);
252 s = uv_to_utf8(s, (UV)PERL_SUBVERSION);
254 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
255 SvPOK_on(PL_patchlevel);
256 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
257 + ((NV)PERL_VERSION / (NV)1000)
258 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
259 + ((NV)PERL_SUBVERSION / (NV)1000000)
262 SvNOK_on(PL_patchlevel); /* dual valued */
263 SvUTF8_on(PL_patchlevel);
264 SvREADONLY_on(PL_patchlevel);
267 #if defined(LOCAL_PATCH_COUNT)
268 PL_localpatches = local_patches; /* For possible -v */
271 PerlIO_init(); /* Hook to IO system */
273 PL_fdpid = newAV(); /* for remembering popen pids by fd */
274 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
280 =for apidoc perl_destruct
282 Shuts down a Perl interpreter. See L<perlembed>.
291 int destruct_level; /* 0=none, 1=full, 2=full with checks */
297 #endif /* USE_THREADS */
299 /* wait for all pseudo-forked children to finish */
300 PERL_WAIT_FOR_CHILDREN;
304 /* Pass 1 on any remaining threads: detach joinables, join zombies */
306 MUTEX_LOCK(&PL_threads_mutex);
307 DEBUG_S(PerlIO_printf(Perl_debug_log,
308 "perl_destruct: waiting for %d threads...\n",
310 for (t = thr->next; t != thr; t = t->next) {
311 MUTEX_LOCK(&t->mutex);
312 switch (ThrSTATE(t)) {
315 DEBUG_S(PerlIO_printf(Perl_debug_log,
316 "perl_destruct: joining zombie %p\n", t));
317 ThrSETSTATE(t, THRf_DEAD);
318 MUTEX_UNLOCK(&t->mutex);
321 * The SvREFCNT_dec below may take a long time (e.g. av
322 * may contain an object scalar whose destructor gets
323 * called) so we have to unlock threads_mutex and start
326 MUTEX_UNLOCK(&PL_threads_mutex);
328 SvREFCNT_dec((SV*)av);
329 DEBUG_S(PerlIO_printf(Perl_debug_log,
330 "perl_destruct: joined zombie %p OK\n", t));
332 case THRf_R_JOINABLE:
333 DEBUG_S(PerlIO_printf(Perl_debug_log,
334 "perl_destruct: detaching thread %p\n", t));
335 ThrSETSTATE(t, THRf_R_DETACHED);
337 * We unlock threads_mutex and t->mutex in the opposite order
338 * from which we locked them just so that DETACH won't
339 * deadlock if it panics. It's only a breach of good style
340 * not a bug since they are unlocks not locks.
342 MUTEX_UNLOCK(&PL_threads_mutex);
344 MUTEX_UNLOCK(&t->mutex);
347 DEBUG_S(PerlIO_printf(Perl_debug_log,
348 "perl_destruct: ignoring %p (state %u)\n",
350 MUTEX_UNLOCK(&t->mutex);
351 /* fall through and out */
354 /* We leave the above "Pass 1" loop with threads_mutex still locked */
356 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
357 while (PL_nthreads > 1)
359 DEBUG_S(PerlIO_printf(Perl_debug_log,
360 "perl_destruct: final wait for %d threads\n",
362 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
364 /* At this point, we're the last thread */
365 MUTEX_UNLOCK(&PL_threads_mutex);
366 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
367 MUTEX_DESTROY(&PL_threads_mutex);
368 COND_DESTROY(&PL_nthreads_cond);
369 #endif /* !defined(FAKE_THREADS) */
370 #endif /* USE_THREADS */
372 destruct_level = PL_perl_destruct_level;
376 if (s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL")) {
378 if (destruct_level < i)
387 /* We must account for everything. */
389 /* Destroy the main CV and syntax tree */
391 PL_curpad = AvARRAY(PL_comppad);
392 op_free(PL_main_root);
393 PL_main_root = Nullop;
395 PL_curcop = &PL_compiling;
396 PL_main_start = Nullop;
397 SvREFCNT_dec(PL_main_cv);
401 if (PL_sv_objcount) {
403 * Try to destruct global references. We do this first so that the
404 * destructors and destructees still exist. Some sv's might remain.
405 * Non-referenced objects are on their own.
410 /* unhook hooks which will soon be, or use, destroyed data */
411 SvREFCNT_dec(PL_warnhook);
412 PL_warnhook = Nullsv;
413 SvREFCNT_dec(PL_diehook);
416 /* call exit list functions */
417 while (PL_exitlistlen-- > 0)
418 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
420 Safefree(PL_exitlist);
422 if (destruct_level == 0){
424 DEBUG_P(debprofdump());
426 /* The exit() function will do everything that needs doing. */
430 /* loosen bonds of global variables */
433 (void)PerlIO_close(PL_rsfp);
437 /* Filters for program text */
438 SvREFCNT_dec(PL_rsfp_filters);
439 PL_rsfp_filters = Nullav;
442 PL_preprocess = FALSE;
448 PL_doswitches = FALSE;
449 PL_dowarn = G_WARN_OFF;
450 PL_doextract = FALSE;
451 PL_sawampersand = FALSE; /* must save all match strings */
454 Safefree(PL_inplace);
456 SvREFCNT_dec(PL_patchlevel);
459 SvREFCNT_dec(PL_e_script);
460 PL_e_script = Nullsv;
463 /* magical thingies */
465 Safefree(PL_ofs); /* $, */
468 Safefree(PL_ors); /* $\ */
471 SvREFCNT_dec(PL_rs); /* $/ */
474 SvREFCNT_dec(PL_nrs); /* $/ helper */
477 PL_multiline = 0; /* $* */
478 Safefree(PL_osname); /* $^O */
481 SvREFCNT_dec(PL_statname);
482 PL_statname = Nullsv;
485 /* defgv, aka *_ should be taken care of elsewhere */
487 /* clean up after study() */
488 SvREFCNT_dec(PL_lastscream);
489 PL_lastscream = Nullsv;
490 Safefree(PL_screamfirst);
492 Safefree(PL_screamnext);
496 Safefree(PL_efloatbuf);
497 PL_efloatbuf = Nullch;
500 /* startup and shutdown function lists */
501 SvREFCNT_dec(PL_beginav);
502 SvREFCNT_dec(PL_endav);
503 SvREFCNT_dec(PL_checkav);
504 SvREFCNT_dec(PL_initav);
510 /* shortcuts just get cleared */
516 PL_argvoutgv = Nullgv;
518 PL_stderrgv = Nullgv;
519 PL_last_in_gv = Nullgv;
521 PL_debstash = Nullhv;
523 /* reset so print() ends up where we expect */
526 SvREFCNT_dec(PL_argvout_stack);
527 PL_argvout_stack = Nullav;
529 SvREFCNT_dec(PL_modglobal);
530 PL_modglobal = Nullhv;
531 SvREFCNT_dec(PL_preambleav);
532 PL_preambleav = Nullav;
533 SvREFCNT_dec(PL_subname);
535 SvREFCNT_dec(PL_linestr);
537 SvREFCNT_dec(PL_pidstatus);
538 PL_pidstatus = Nullhv;
539 SvREFCNT_dec(PL_toptarget);
540 PL_toptarget = Nullsv;
541 SvREFCNT_dec(PL_bodytarget);
542 PL_bodytarget = Nullsv;
543 PL_formtarget = Nullsv;
545 /* free locale stuff */
546 #ifdef USE_LOCALE_COLLATE
547 Safefree(PL_collation_name);
548 PL_collation_name = Nullch;
551 #ifdef USE_LOCALE_NUMERIC
552 Safefree(PL_numeric_name);
553 PL_numeric_name = Nullch;
556 /* clear utf8 character classes */
557 SvREFCNT_dec(PL_utf8_alnum);
558 SvREFCNT_dec(PL_utf8_alnumc);
559 SvREFCNT_dec(PL_utf8_ascii);
560 SvREFCNT_dec(PL_utf8_alpha);
561 SvREFCNT_dec(PL_utf8_space);
562 SvREFCNT_dec(PL_utf8_cntrl);
563 SvREFCNT_dec(PL_utf8_graph);
564 SvREFCNT_dec(PL_utf8_digit);
565 SvREFCNT_dec(PL_utf8_upper);
566 SvREFCNT_dec(PL_utf8_lower);
567 SvREFCNT_dec(PL_utf8_print);
568 SvREFCNT_dec(PL_utf8_punct);
569 SvREFCNT_dec(PL_utf8_xdigit);
570 SvREFCNT_dec(PL_utf8_mark);
571 SvREFCNT_dec(PL_utf8_toupper);
572 SvREFCNT_dec(PL_utf8_tolower);
573 PL_utf8_alnum = Nullsv;
574 PL_utf8_alnumc = Nullsv;
575 PL_utf8_ascii = Nullsv;
576 PL_utf8_alpha = Nullsv;
577 PL_utf8_space = Nullsv;
578 PL_utf8_cntrl = Nullsv;
579 PL_utf8_graph = Nullsv;
580 PL_utf8_digit = Nullsv;
581 PL_utf8_upper = Nullsv;
582 PL_utf8_lower = Nullsv;
583 PL_utf8_print = Nullsv;
584 PL_utf8_punct = Nullsv;
585 PL_utf8_xdigit = Nullsv;
586 PL_utf8_mark = Nullsv;
587 PL_utf8_toupper = Nullsv;
588 PL_utf8_totitle = Nullsv;
589 PL_utf8_tolower = Nullsv;
591 if (!specialWARN(PL_compiling.cop_warnings))
592 SvREFCNT_dec(PL_compiling.cop_warnings);
593 PL_compiling.cop_warnings = Nullsv;
595 /* Prepare to destruct main symbol table. */
600 SvREFCNT_dec(PL_curstname);
601 PL_curstname = Nullsv;
603 /* clear queued errors */
604 SvREFCNT_dec(PL_errors);
608 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
609 if (PL_scopestack_ix != 0)
610 Perl_warner(aTHX_ WARN_INTERNAL,
611 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
612 (long)PL_scopestack_ix);
613 if (PL_savestack_ix != 0)
614 Perl_warner(aTHX_ WARN_INTERNAL,
615 "Unbalanced saves: %ld more saves than restores\n",
616 (long)PL_savestack_ix);
617 if (PL_tmps_floor != -1)
618 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
619 (long)PL_tmps_floor + 1);
620 if (cxstack_ix != -1)
621 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
622 (long)cxstack_ix + 1);
625 /* Now absolutely destruct everything, somehow or other, loops or no. */
627 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
628 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
629 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
630 last_sv_count = PL_sv_count;
633 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
634 SvFLAGS(PL_fdpid) |= SVt_PVAV;
635 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
636 SvFLAGS(PL_strtab) |= SVt_PVHV;
638 AvREAL_off(PL_fdpid); /* no surviving entries */
639 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
642 /* Destruct the global string table. */
644 /* Yell and reset the HeVAL() slots that are still holding refcounts,
645 * so that sv_free() won't fail on them.
653 max = HvMAX(PL_strtab);
654 array = HvARRAY(PL_strtab);
657 if (hent && ckWARN_d(WARN_INTERNAL)) {
658 Perl_warner(aTHX_ WARN_INTERNAL,
659 "Unbalanced string table refcount: (%d) for \"%s\"",
660 HeVAL(hent) - Nullsv, HeKEY(hent));
661 HeVAL(hent) = Nullsv;
671 SvREFCNT_dec(PL_strtab);
673 /* free special SVs */
675 SvREFCNT(&PL_sv_yes) = 0;
676 sv_clear(&PL_sv_yes);
677 SvANY(&PL_sv_yes) = NULL;
679 SvREFCNT(&PL_sv_no) = 0;
681 SvANY(&PL_sv_no) = NULL;
683 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
684 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
688 /* No SVs have survived, need to clean out */
689 Safefree(PL_origfilename);
690 Safefree(PL_reg_start_tmp);
692 Safefree(PL_reg_curpm);
693 Safefree(PL_reg_poscache);
694 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
695 Safefree(PL_op_mask);
697 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
699 DEBUG_P(debprofdump());
701 MUTEX_DESTROY(&PL_strtab_mutex);
702 MUTEX_DESTROY(&PL_sv_mutex);
703 MUTEX_DESTROY(&PL_eval_mutex);
704 MUTEX_DESTROY(&PL_cred_mutex);
705 COND_DESTROY(&PL_eval_cond);
706 #ifdef EMULATE_ATOMIC_REFCOUNTS
707 MUTEX_DESTROY(&PL_svref_mutex);
708 #endif /* EMULATE_ATOMIC_REFCOUNTS */
710 /* As the penultimate thing, free the non-arena SV for thrsv */
711 Safefree(SvPVX(PL_thrsv));
712 Safefree(SvANY(PL_thrsv));
715 #endif /* USE_THREADS */
717 /* As the absolutely last thing, free the non-arena SV for mess() */
720 /* it could have accumulated taint magic */
721 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
724 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
725 moremagic = mg->mg_moremagic;
726 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
727 Safefree(mg->mg_ptr);
731 /* we know that type >= SVt_PV */
732 SvOOK_off(PL_mess_sv);
733 Safefree(SvPVX(PL_mess_sv));
734 Safefree(SvANY(PL_mess_sv));
735 Safefree(PL_mess_sv);
741 =for apidoc perl_free
743 Releases a Perl interpreter. See L<perlembed>.
751 #if defined(PERL_OBJECT)
759 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
761 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
762 PL_exitlist[PL_exitlistlen].fn = fn;
763 PL_exitlist[PL_exitlistlen].ptr = ptr;
768 =for apidoc perl_parse
770 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
776 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
786 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
789 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
790 setuid perl scripts securely.\n");
794 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
795 _dyld_lookup_and_bind
796 ("__environ", (unsigned long *) &environ_pointer, NULL);
801 #ifndef VMS /* VMS doesn't have environ array */
802 PL_origenviron = environ;
807 /* Come here if running an undumped a.out. */
809 PL_origfilename = savepv(argv[0]);
810 PL_do_undump = FALSE;
811 cxstack_ix = -1; /* start label stack again */
813 init_postdump_symbols(argc,argv,env);
818 PL_curpad = AvARRAY(PL_comppad);
819 op_free(PL_main_root);
820 PL_main_root = Nullop;
822 PL_main_start = Nullop;
823 SvREFCNT_dec(PL_main_cv);
827 oldscope = PL_scopestack_ix;
828 PL_dowarn = G_WARN_OFF;
830 #ifdef PERL_FLEXIBLE_EXCEPTIONS
831 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
837 #ifndef PERL_FLEXIBLE_EXCEPTIONS
838 parse_body(env,xsinit);
841 call_list(oldscope, PL_checkav);
848 /* my_exit() was called */
849 while (PL_scopestack_ix > oldscope)
852 PL_curstash = PL_defstash;
854 call_list(oldscope, PL_checkav);
855 ret = STATUS_NATIVE_EXPORT;
858 PerlIO_printf(Perl_error_log, "panic: top_env\n");
866 #ifdef PERL_FLEXIBLE_EXCEPTIONS
868 S_vparse_body(pTHX_ va_list args)
870 char **env = va_arg(args, char**);
871 XSINIT_t xsinit = va_arg(args, XSINIT_t);
873 return parse_body(env, xsinit);
878 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
881 int argc = PL_origargc;
882 char **argv = PL_origargv;
883 char *scriptname = NULL;
885 VOL bool dosearch = FALSE;
890 char *cddir = Nullch;
892 sv_setpvn(PL_linestr,"",0);
893 sv = newSVpvn("",0); /* first used for -I flags */
897 for (argc--,argv++; argc > 0; argc--,argv++) {
898 if (argv[0][0] != '-' || !argv[0][1])
902 validarg = " PHOOEY ";
911 win32_argv2utf8(argc-1, argv+1);
914 #ifndef PERL_STRICT_CR
938 if (s = moreswitches(s))
948 if (PL_euid != PL_uid || PL_egid != PL_gid)
949 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
951 PL_e_script = newSVpvn("",0);
952 filter_add(read_e_script, NULL);
955 sv_catpv(PL_e_script, s);
957 sv_catpv(PL_e_script, argv[1]);
961 Perl_croak(aTHX_ "No code specified for -e");
962 sv_catpv(PL_e_script, "\n");
965 case 'I': /* -I handled both here and in moreswitches() */
967 if (!*++s && (s=argv[1]) != Nullch) {
972 STRLEN len = strlen(s);
975 sv_catpvn(sv, "-I", 2);
976 sv_catpvn(sv, p, len);
977 sv_catpvn(sv, " ", 1);
981 Perl_croak(aTHX_ "No directory specified for -I");
985 PL_preprocess = TRUE;
995 PL_preambleav = newAV();
996 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
998 PL_Sv = newSVpv("print myconfig();",0);
1000 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1002 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1004 sv_catpv(PL_Sv,"\" Compile-time options:");
1006 sv_catpv(PL_Sv," DEBUGGING");
1008 # ifdef MULTIPLICITY
1009 sv_catpv(PL_Sv," MULTIPLICITY");
1012 sv_catpv(PL_Sv," USE_THREADS");
1014 # ifdef USE_ITHREADS
1015 sv_catpv(PL_Sv," USE_ITHREADS");
1017 # ifdef USE_64_BIT_INT
1018 sv_catpv(PL_Sv," USE_64_BIT_INT");
1020 # ifdef USE_64_BIT_ALL
1021 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1023 # ifdef USE_LONG_DOUBLE
1024 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1026 # ifdef USE_LARGE_FILES
1027 sv_catpv(PL_Sv," USE_LARGE_FILES");
1030 sv_catpv(PL_Sv," USE_SOCKS");
1033 sv_catpv(PL_Sv," PERL_OBJECT");
1035 # ifdef PERL_IMPLICIT_CONTEXT
1036 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1038 # ifdef PERL_IMPLICIT_SYS
1039 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1041 sv_catpv(PL_Sv,"\\n\",");
1043 #if defined(LOCAL_PATCH_COUNT)
1044 if (LOCAL_PATCH_COUNT > 0) {
1046 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1047 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1048 if (PL_localpatches[i])
1049 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1053 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1056 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1058 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1061 sv_catpv(PL_Sv, "; \
1063 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1064 print \" \\%ENV:\\n @env\\n\" if @env; \
1065 print \" \\@INC:\\n @INC\\n\";");
1068 PL_Sv = newSVpv("config_vars(qw(",0);
1069 sv_catpv(PL_Sv, ++s);
1070 sv_catpv(PL_Sv, "))");
1073 av_push(PL_preambleav, PL_Sv);
1074 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1077 PL_doextract = TRUE;
1085 if (!*++s || isSPACE(*s)) {
1089 /* catch use of gnu style long options */
1090 if (strEQ(s, "version")) {
1094 if (strEQ(s, "help")) {
1101 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1107 #ifndef SECURE_INTERNAL_GETENV
1110 (s = PerlEnv_getenv("PERL5OPT")))
1114 if (*s == '-' && *(s+1) == 'T')
1127 if (!strchr("DIMUdmw", *s))
1128 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1129 s = moreswitches(s);
1135 scriptname = argv[0];
1138 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1140 else if (scriptname == Nullch) {
1142 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1150 open_script(scriptname,dosearch,sv,&fdscript);
1152 validate_suid(validarg, scriptname,fdscript);
1154 #if defined(SIGCHLD) || defined(SIGCLD)
1157 # define SIGCHLD SIGCLD
1159 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1160 if (sigstate == SIG_IGN) {
1161 if (ckWARN(WARN_SIGNAL))
1162 Perl_warner(aTHX_ WARN_SIGNAL,
1163 "Can't ignore signal CHLD, forcing to default");
1164 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1171 if (cddir && PerlDir_chdir(cddir) < 0)
1172 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1176 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1177 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1178 CvUNIQUE_on(PL_compcv);
1180 PL_comppad = newAV();
1181 av_push(PL_comppad, Nullsv);
1182 PL_curpad = AvARRAY(PL_comppad);
1183 PL_comppad_name = newAV();
1184 PL_comppad_name_fill = 0;
1185 PL_min_intro_pending = 0;
1188 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1189 PL_curpad[0] = (SV*)newAV();
1190 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1191 CvOWNER(PL_compcv) = 0;
1192 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1193 MUTEX_INIT(CvMUTEXP(PL_compcv));
1194 #endif /* USE_THREADS */
1196 comppadlist = newAV();
1197 AvREAL_off(comppadlist);
1198 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1199 av_store(comppadlist, 1, (SV*)PL_comppad);
1200 CvPADLIST(PL_compcv) = comppadlist;
1202 boot_core_UNIVERSAL();
1204 boot_core_xsutils();
1208 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1209 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__)
1217 init_predump_symbols();
1218 /* init_postdump_symbols not currently designed to be called */
1219 /* more than once (ENV isn't cleared first, for example) */
1220 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1222 init_postdump_symbols(argc,argv,env);
1226 /* now parse the script */
1228 SETERRNO(0,SS$_NORMAL);
1230 if (yyparse() || PL_error_count) {
1232 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1234 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1238 CopLINE_set(PL_curcop, 0);
1239 PL_curstash = PL_defstash;
1240 PL_preprocess = FALSE;
1242 SvREFCNT_dec(PL_e_script);
1243 PL_e_script = Nullsv;
1246 /* now that script is parsed, we can modify record separator */
1247 SvREFCNT_dec(PL_rs);
1248 PL_rs = SvREFCNT_inc(PL_nrs);
1249 sv_setsv(get_sv("/", TRUE), PL_rs);
1254 SAVECOPFILE(PL_curcop);
1255 SAVECOPLINE(PL_curcop);
1256 gv_check(PL_defstash);
1263 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1264 dump_mstats("after compilation:");
1273 =for apidoc perl_run
1275 Tells a Perl interpreter to run. See L<perlembed>.
1291 oldscope = PL_scopestack_ix;
1293 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1295 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1301 cxstack_ix = -1; /* start context stack again */
1303 case 0: /* normal completion */
1304 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1309 case 2: /* my_exit() */
1310 while (PL_scopestack_ix > oldscope)
1313 PL_curstash = PL_defstash;
1314 if (PL_endav && !PL_minus_c)
1315 call_list(oldscope, PL_endav);
1317 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1318 dump_mstats("after execution: ");
1320 ret = STATUS_NATIVE_EXPORT;
1324 POPSTACK_TO(PL_mainstack);
1327 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1337 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1339 S_vrun_body(pTHX_ va_list args)
1341 I32 oldscope = va_arg(args, I32);
1343 return run_body(oldscope);
1349 S_run_body(pTHX_ I32 oldscope)
1353 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1354 PL_sawampersand ? "Enabling" : "Omitting"));
1356 if (!PL_restartop) {
1357 DEBUG_x(dump_all());
1358 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1359 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1363 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1366 if (PERLDB_SINGLE && PL_DBsingle)
1367 sv_setiv(PL_DBsingle, 1);
1369 call_list(oldscope, PL_initav);
1375 PL_op = PL_restartop;
1379 else if (PL_main_start) {
1380 CvDEPTH(PL_main_cv) = 1;
1381 PL_op = PL_main_start;
1391 =for apidoc p||get_sv
1393 Returns the SV of the specified Perl scalar. If C<create> is set and the
1394 Perl variable does not exist then it will be created. If C<create> is not
1395 set and the variable does not exist then NULL is returned.
1401 Perl_get_sv(pTHX_ const char *name, I32 create)
1405 if (name[1] == '\0' && !isALPHA(name[0])) {
1406 PADOFFSET tmp = find_threadsv(name);
1407 if (tmp != NOT_IN_PAD) {
1409 return THREADSV(tmp);
1412 #endif /* USE_THREADS */
1413 gv = gv_fetchpv(name, create, SVt_PV);
1420 =for apidoc p||get_av
1422 Returns the AV of the specified Perl array. If C<create> is set and the
1423 Perl variable does not exist then it will be created. If C<create> is not
1424 set and the variable does not exist then NULL is returned.
1430 Perl_get_av(pTHX_ const char *name, I32 create)
1432 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1441 =for apidoc p||get_hv
1443 Returns the HV of the specified Perl hash. If C<create> is set and the
1444 Perl variable does not exist then it will be created. If C<create> is not
1445 set and the variable does not exist then NULL is returned.
1451 Perl_get_hv(pTHX_ const char *name, I32 create)
1453 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1462 =for apidoc p||get_cv
1464 Returns the CV of the specified Perl subroutine. If C<create> is set and
1465 the Perl subroutine does not exist then it will be declared (which has the
1466 same effect as saying C<sub name;>). If C<create> is not set and the
1467 subroutine does not exist then NULL is returned.
1473 Perl_get_cv(pTHX_ const char *name, I32 create)
1475 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1476 /* XXX unsafe for threads if eval_owner isn't held */
1477 /* XXX this is probably not what they think they're getting.
1478 * It has the same effect as "sub name;", i.e. just a forward
1480 if (create && !GvCVu(gv))
1481 return newSUB(start_subparse(FALSE, 0),
1482 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1490 /* Be sure to refetch the stack pointer after calling these routines. */
1493 =for apidoc p||call_argv
1495 Performs a callback to the specified Perl sub. See L<perlcall>.
1501 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1503 /* See G_* flags in cop.h */
1504 /* null terminated arg list */
1511 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1516 return call_pv(sub_name, flags);
1520 =for apidoc p||call_pv
1522 Performs a callback to the specified Perl sub. See L<perlcall>.
1528 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1529 /* name of the subroutine */
1530 /* See G_* flags in cop.h */
1532 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1536 =for apidoc p||call_method
1538 Performs a callback to the specified Perl method. The blessed object must
1539 be on the stack. See L<perlcall>.
1545 Perl_call_method(pTHX_ const char *methname, I32 flags)
1546 /* name of the subroutine */
1547 /* See G_* flags in cop.h */
1555 XPUSHs(sv_2mortal(newSVpv(methname,0)));
1560 return call_sv(*PL_stack_sp--, flags);
1563 /* May be called with any of a CV, a GV, or an SV containing the name. */
1565 =for apidoc p||call_sv
1567 Performs a callback to the Perl sub whose name is in the SV. See
1574 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1576 /* See G_* flags in cop.h */
1579 LOGOP myop; /* fake syntax tree node */
1583 bool oldcatch = CATCH_GET;
1588 if (flags & G_DISCARD) {
1593 Zero(&myop, 1, LOGOP);
1594 myop.op_next = Nullop;
1595 if (!(flags & G_NOARGS))
1596 myop.op_flags |= OPf_STACKED;
1597 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1598 (flags & G_ARRAY) ? OPf_WANT_LIST :
1603 EXTEND(PL_stack_sp, 1);
1604 *++PL_stack_sp = sv;
1606 oldscope = PL_scopestack_ix;
1608 if (PERLDB_SUB && PL_curstash != PL_debstash
1609 /* Handle first BEGIN of -d. */
1610 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1611 /* Try harder, since this may have been a sighandler, thus
1612 * curstash may be meaningless. */
1613 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1614 && !(flags & G_NODEBUG))
1615 PL_op->op_private |= OPpENTERSUB_DB;
1617 if (!(flags & G_EVAL)) {
1619 call_body((OP*)&myop, FALSE);
1620 retval = PL_stack_sp - (PL_stack_base + oldmark);
1621 CATCH_SET(oldcatch);
1624 cLOGOP->op_other = PL_op;
1626 /* we're trying to emulate pp_entertry() here */
1628 register PERL_CONTEXT *cx;
1629 I32 gimme = GIMME_V;
1634 push_return(PL_op->op_next);
1635 PUSHBLOCK(cx, CXt_EVAL, PL_stack_sp);
1637 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1639 PL_in_eval = EVAL_INEVAL;
1640 if (flags & G_KEEPERR)
1641 PL_in_eval |= EVAL_KEEPERR;
1647 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1649 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1656 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1658 call_body((OP*)&myop, FALSE);
1660 retval = PL_stack_sp - (PL_stack_base + oldmark);
1661 if (!(flags & G_KEEPERR))
1668 /* my_exit() was called */
1669 PL_curstash = PL_defstash;
1672 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1673 Perl_croak(aTHX_ "Callback called exit");
1678 PL_op = PL_restartop;
1682 PL_stack_sp = PL_stack_base + oldmark;
1683 if (flags & G_ARRAY)
1687 *++PL_stack_sp = &PL_sv_undef;
1692 if (PL_scopestack_ix > oldscope) {
1696 register PERL_CONTEXT *cx;
1708 if (flags & G_DISCARD) {
1709 PL_stack_sp = PL_stack_base + oldmark;
1718 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1720 S_vcall_body(pTHX_ va_list args)
1722 OP *myop = va_arg(args, OP*);
1723 int is_eval = va_arg(args, int);
1725 call_body(myop, is_eval);
1731 S_call_body(pTHX_ OP *myop, int is_eval)
1735 if (PL_op == myop) {
1737 PL_op = Perl_pp_entereval(aTHX);
1739 PL_op = Perl_pp_entersub(aTHX);
1745 /* Eval a string. The G_EVAL flag is always assumed. */
1748 =for apidoc p||eval_sv
1750 Tells Perl to C<eval> the string in the SV.
1756 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1758 /* See G_* flags in cop.h */
1761 UNOP myop; /* fake syntax tree node */
1762 I32 oldmark = SP - PL_stack_base;
1769 if (flags & G_DISCARD) {
1776 Zero(PL_op, 1, UNOP);
1777 EXTEND(PL_stack_sp, 1);
1778 *++PL_stack_sp = sv;
1779 oldscope = PL_scopestack_ix;
1781 if (!(flags & G_NOARGS))
1782 myop.op_flags = OPf_STACKED;
1783 myop.op_next = Nullop;
1784 myop.op_type = OP_ENTEREVAL;
1785 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1786 (flags & G_ARRAY) ? OPf_WANT_LIST :
1788 if (flags & G_KEEPERR)
1789 myop.op_flags |= OPf_SPECIAL;
1791 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1793 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1800 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1802 call_body((OP*)&myop,TRUE);
1804 retval = PL_stack_sp - (PL_stack_base + oldmark);
1805 if (!(flags & G_KEEPERR))
1812 /* my_exit() was called */
1813 PL_curstash = PL_defstash;
1816 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1817 Perl_croak(aTHX_ "Callback called exit");
1822 PL_op = PL_restartop;
1826 PL_stack_sp = PL_stack_base + oldmark;
1827 if (flags & G_ARRAY)
1831 *++PL_stack_sp = &PL_sv_undef;
1837 if (flags & G_DISCARD) {
1838 PL_stack_sp = PL_stack_base + oldmark;
1848 =for apidoc p||eval_pv
1850 Tells Perl to C<eval> the given string and return an SV* result.
1856 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1859 SV* sv = newSVpv(p, 0);
1862 eval_sv(sv, G_SCALAR);
1869 if (croak_on_error && SvTRUE(ERRSV)) {
1871 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1877 /* Require a module. */
1880 =for apidoc p||require_pv
1882 Tells Perl to C<require> a module.
1888 Perl_require_pv(pTHX_ const char *pv)
1892 PUSHSTACKi(PERLSI_REQUIRE);
1894 sv = sv_newmortal();
1895 sv_setpv(sv, "require '");
1898 eval_sv(sv, G_DISCARD);
1904 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
1908 if (gv = gv_fetchpv(sym,TRUE, SVt_PV))
1909 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1913 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
1915 /* This message really ought to be max 23 lines.
1916 * Removed -h because the user already knows that opton. Others? */
1918 static char *usage_msg[] = {
1919 "-0[octal] specify record separator (\\0, if no argument)",
1920 "-a autosplit mode with -n or -p (splits $_ into @F)",
1921 "-C enable native wide character system interfaces",
1922 "-c check syntax only (runs BEGIN and END blocks)",
1923 "-d[:debugger] run program under debugger",
1924 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1925 "-e 'command' one line of program (several -e's allowed, omit programfile)",
1926 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
1927 "-i[extension] edit <> files in place (makes backup if extension supplied)",
1928 "-Idirectory specify @INC/#include directory (several -I's allowed)",
1929 "-l[octal] enable line ending processing, specifies line terminator",
1930 "-[mM][-]module execute `use/no module...' before executing program",
1931 "-n assume 'while (<>) { ... }' loop around program",
1932 "-p assume loop like -n but print line also, like sed",
1933 "-P run program through C preprocessor before compilation",
1934 "-s enable rudimentary parsing for switches after programfile",
1935 "-S look for programfile using PATH environment variable",
1936 "-T enable tainting checks",
1937 "-u dump core after parsing program",
1938 "-U allow unsafe operations",
1939 "-v print version, subversion (includes VERY IMPORTANT perl info)",
1940 "-V[:variable] print configuration summary (or a single Config.pm variable)",
1941 "-w enable many useful warnings (RECOMMENDED)",
1942 "-W enable all warnings",
1943 "-X disable all warnings",
1944 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
1948 char **p = usage_msg;
1950 printf("\nUsage: %s [switches] [--] [programfile] [arguments]", name);
1952 printf("\n %s", *p++);
1955 /* This routine handles any switches that can be given during run */
1958 Perl_moreswitches(pTHX_ char *s)
1967 rschar = (U32)scan_oct(s, 4, &numlen);
1968 SvREFCNT_dec(PL_nrs);
1969 if (rschar & ~((U8)~0))
1970 PL_nrs = &PL_sv_undef;
1971 else if (!rschar && numlen >= 2)
1972 PL_nrs = newSVpvn("", 0);
1975 PL_nrs = newSVpvn(&ch, 1);
1980 PL_widesyscalls = TRUE;
1985 PL_splitstr = savepv(s + 1);
1999 if (*s == ':' || *s == '=') {
2000 my_setenv("PERL5DB", Perl_form(aTHX_ "use Devel::%s;", ++s));
2004 PL_perldb = PERLDB_ALL;
2012 if (isALPHA(s[1])) {
2013 static char debopts[] = "psltocPmfrxuLHXDS";
2016 for (s++; *s && (d = strchr(debopts,*s)); s++)
2017 PL_debug |= 1 << (d - debopts);
2020 PL_debug = atoi(s+1);
2021 for (s++; isDIGIT(*s); s++) ;
2023 PL_debug |= 0x80000000;
2026 if (ckWARN_d(WARN_DEBUGGING))
2027 Perl_warner(aTHX_ WARN_DEBUGGING,
2028 "Recompile perl with -DDEBUGGING to use -D switch\n");
2029 for (s++; isALNUM(*s); s++) ;
2035 usage(PL_origargv[0]);
2039 Safefree(PL_inplace);
2040 PL_inplace = savepv(s+1);
2042 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2045 if (*s == '-') /* Additional switches on #! line. */
2049 case 'I': /* -I handled both here and in parse_perl() */
2052 while (*s && isSPACE(*s))
2057 /* ignore trailing spaces (possibly followed by other switches) */
2059 for (e = p; *e && !isSPACE(*e); e++) ;
2063 } while (*p && *p != '-');
2064 e = savepvn(s, e-s);
2072 Perl_croak(aTHX_ "No directory specified for -I");
2080 PL_ors = savepv("\n");
2082 *PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2087 if (RsPARA(PL_nrs)) {
2092 PL_ors = SvPV(PL_nrs, PL_orslen);
2093 PL_ors = savepvn(PL_ors, PL_orslen);
2097 forbid_setid("-M"); /* XXX ? */
2100 forbid_setid("-m"); /* XXX ? */
2105 /* -M-foo == 'no foo' */
2106 if (*s == '-') { use = "no "; ++s; }
2107 sv = newSVpv(use,0);
2109 /* We allow -M'Module qw(Foo Bar)' */
2110 while(isALNUM(*s) || *s==':') ++s;
2112 sv_catpv(sv, start);
2113 if (*(start-1) == 'm') {
2115 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2116 sv_catpv( sv, " ()");
2119 sv_catpvn(sv, start, s-start);
2120 sv_catpv(sv, " split(/,/,q{");
2126 PL_preambleav = newAV();
2127 av_push(PL_preambleav, sv);
2130 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2142 PL_doswitches = TRUE;
2147 Perl_croak(aTHX_ "Too late for \"-T\" option");
2151 PL_do_undump = TRUE;
2159 printf(Perl_form(aTHX_ "\nThis is perl, v%vd built for %s",
2160 PL_patchlevel, ARCHNAME));
2161 #if defined(LOCAL_PATCH_COUNT)
2162 if (LOCAL_PATCH_COUNT > 0)
2163 printf("\n(with %d registered patch%s, see perl -V for more detail)",
2164 (int)LOCAL_PATCH_COUNT, (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2167 printf("\n\nCopyright 1987-2000, Larry Wall\n");
2169 printf("\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2172 printf("djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n");
2173 printf("djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2176 printf("\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2177 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2180 printf("atariST series port, ++jrb bammi@cadence.com\n");
2183 printf("BeOS port Copyright Tom Spindler, 1997-1999\n");
2186 printf("MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
2189 printf("MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2192 printf("Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2195 printf("VM/ESA port by Neale Ferguson, 1998-1999\n");
2198 printf("BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2201 printf("MiNT port by Guido Flohr, 1997-1999\n");
2204 printf("EPOC port by Olaf Flebbe, 1999-2000\n");
2206 #ifdef BINARY_BUILD_NOTICE
2207 BINARY_BUILD_NOTICE;
2210 Perl may be copied only under the terms of either the Artistic License or the\n\
2211 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
2212 Complete documentation for Perl, including FAQ lists, should be found on\n\
2213 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2214 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2217 if (! (PL_dowarn & G_WARN_ALL_MASK))
2218 PL_dowarn |= G_WARN_ON;
2222 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2223 PL_compiling.cop_warnings = WARN_ALL ;
2227 PL_dowarn = G_WARN_ALL_OFF;
2228 PL_compiling.cop_warnings = WARN_NONE ;
2233 if (s[1] == '-') /* Additional switches on #! line. */
2238 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2244 #ifdef ALTERNATE_SHEBANG
2245 case 'S': /* OS/2 needs -S on "extproc" line. */
2253 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2258 /* compliments of Tom Christiansen */
2260 /* unexec() can be found in the Gnu emacs distribution */
2261 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2264 Perl_my_unexec(pTHX)
2272 prog = newSVpv(BIN_EXP, 0);
2273 sv_catpv(prog, "/perl");
2274 file = newSVpv(PL_origfilename, 0);
2275 sv_catpv(file, ".perldump");
2277 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2278 /* unexec prints msg to stderr in case of failure */
2279 PerlProc_exit(status);
2282 # include <lib$routines.h>
2283 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2285 ABORT(); /* for use with undump */
2290 /* initialize curinterp */
2295 #ifdef PERL_OBJECT /* XXX kludge */
2298 PL_chopset = " \n-"; \
2299 PL_copline = NOLINE; \
2300 PL_curcop = &PL_compiling;\
2301 PL_curcopdb = NULL; \
2303 PL_dumpindent = 4; \
2304 PL_laststatval = -1; \
2305 PL_laststype = OP_STAT; \
2306 PL_maxscream = -1; \
2307 PL_maxsysfd = MAXSYSFD; \
2308 PL_statname = Nullsv; \
2309 PL_tmps_floor = -1; \
2311 PL_op_mask = NULL; \
2312 PL_laststatval = -1; \
2313 PL_laststype = OP_STAT; \
2314 PL_mess_sv = Nullsv; \
2315 PL_splitstr = " "; \
2316 PL_generation = 100; \
2317 PL_exitlist = NULL; \
2318 PL_exitlistlen = 0; \
2320 PL_in_clean_objs = FALSE; \
2321 PL_in_clean_all = FALSE; \
2322 PL_profiledata = NULL; \
2324 PL_rsfp_filters = Nullav; \
2329 # ifdef MULTIPLICITY
2330 # define PERLVAR(var,type)
2331 # define PERLVARA(var,n,type)
2332 # if defined(PERL_IMPLICIT_CONTEXT)
2333 # if defined(USE_THREADS)
2334 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2335 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2336 # else /* !USE_THREADS */
2337 # define PERLVARI(var,type,init) aTHX->var = init;
2338 # define PERLVARIC(var,type,init) aTHX->var = init;
2339 # endif /* USE_THREADS */
2341 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2342 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2344 # include "intrpvar.h"
2345 # ifndef USE_THREADS
2346 # include "thrdvar.h"
2353 # define PERLVAR(var,type)
2354 # define PERLVARA(var,n,type)
2355 # define PERLVARI(var,type,init) PL_##var = init;
2356 # define PERLVARIC(var,type,init) PL_##var = init;
2357 # include "intrpvar.h"
2358 # ifndef USE_THREADS
2359 # include "thrdvar.h"
2371 S_init_main_stash(pTHX)
2376 /* Note that strtab is a rather special HV. Assumptions are made
2377 about not iterating on it, and not adding tie magic to it.
2378 It is properly deallocated in perl_destruct() */
2379 PL_strtab = newHV();
2381 MUTEX_INIT(&PL_strtab_mutex);
2383 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2384 hv_ksplit(PL_strtab, 512);
2386 PL_curstash = PL_defstash = newHV();
2387 PL_curstname = newSVpvn("main",4);
2388 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2389 SvREFCNT_dec(GvHV(gv));
2390 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2392 HvNAME(PL_defstash) = savepv("main");
2393 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2394 GvMULTI_on(PL_incgv);
2395 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2396 GvMULTI_on(PL_hintgv);
2397 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2398 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2399 GvMULTI_on(PL_errgv);
2400 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2401 GvMULTI_on(PL_replgv);
2402 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2403 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2404 sv_setpvn(ERRSV, "", 0);
2405 PL_curstash = PL_defstash;
2406 CopSTASH_set(&PL_compiling, PL_defstash);
2407 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2408 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2409 /* We must init $/ before switches are processed. */
2410 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2414 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2422 PL_origfilename = savepv("-e");
2425 /* if find_script() returns, it returns a malloc()-ed value */
2426 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2428 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2429 char *s = scriptname + 8;
2430 *fdscript = atoi(s);
2434 scriptname = savepv(s + 1);
2435 Safefree(PL_origfilename);
2436 PL_origfilename = scriptname;
2441 CopFILE_set(PL_curcop, PL_origfilename);
2442 if (strEQ(PL_origfilename,"-"))
2444 if (*fdscript >= 0) {
2445 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2446 #if defined(HAS_FCNTL) && defined(F_SETFD)
2448 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2451 else if (PL_preprocess) {
2452 char *cpp_cfg = CPPSTDIN;
2453 SV *cpp = newSVpvn("",0);
2454 SV *cmd = NEWSV(0,0);
2456 if (strEQ(cpp_cfg, "cppstdin"))
2457 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2458 sv_catpv(cpp, cpp_cfg);
2460 sv_catpvn(sv, "-I", 2);
2461 sv_catpv(sv,PRIVLIB_EXP);
2464 Perl_sv_setpvf(aTHX_ cmd, "\
2465 sed %s -e \"/^[^#]/b\" \
2466 -e \"/^#[ ]*include[ ]/b\" \
2467 -e \"/^#[ ]*define[ ]/b\" \
2468 -e \"/^#[ ]*if[ ]/b\" \
2469 -e \"/^#[ ]*ifdef[ ]/b\" \
2470 -e \"/^#[ ]*ifndef[ ]/b\" \
2471 -e \"/^#[ ]*else/b\" \
2472 -e \"/^#[ ]*elif[ ]/b\" \
2473 -e \"/^#[ ]*undef[ ]/b\" \
2474 -e \"/^#[ ]*endif/b\" \
2476 %s | %"SVf" -C %"SVf" %s",
2477 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2480 Perl_sv_setpvf(aTHX_ cmd, "\
2481 %s %s -e '/^[^#]/b' \
2482 -e '/^#[ ]*include[ ]/b' \
2483 -e '/^#[ ]*define[ ]/b' \
2484 -e '/^#[ ]*if[ ]/b' \
2485 -e '/^#[ ]*ifdef[ ]/b' \
2486 -e '/^#[ ]*ifndef[ ]/b' \
2487 -e '/^#[ ]*else/b' \
2488 -e '/^#[ ]*elif[ ]/b' \
2489 -e '/^#[ ]*undef[ ]/b' \
2490 -e '/^#[ ]*endif/b' \
2492 %s | %"SVf" %"SVf" %s",
2494 Perl_sv_setpvf(aTHX_ cmd, "\
2495 %s %s -e '/^[^#]/b' \
2496 -e '/^#[ ]*include[ ]/b' \
2497 -e '/^#[ ]*define[ ]/b' \
2498 -e '/^#[ ]*if[ ]/b' \
2499 -e '/^#[ ]*ifdef[ ]/b' \
2500 -e '/^#[ ]*ifndef[ ]/b' \
2501 -e '/^#[ ]*else/b' \
2502 -e '/^#[ ]*elif[ ]/b' \
2503 -e '/^#[ ]*undef[ ]/b' \
2504 -e '/^#[ ]*endif/b' \
2506 %s | %"SVf" -C %"SVf" %s",
2513 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2515 scriptname, cpp, sv, CPPMINUS);
2516 PL_doextract = FALSE;
2517 #ifdef IAMSUID /* actually, this is caught earlier */
2518 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2520 (void)seteuid(PL_uid); /* musn't stay setuid root */
2523 (void)setreuid((Uid_t)-1, PL_uid);
2525 #ifdef HAS_SETRESUID
2526 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2528 PerlProc_setuid(PL_uid);
2532 if (PerlProc_geteuid() != PL_uid)
2533 Perl_croak(aTHX_ "Can't do seteuid!\n");
2535 #endif /* IAMSUID */
2536 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2540 else if (!*scriptname) {
2541 forbid_setid("program input from stdin");
2542 PL_rsfp = PerlIO_stdin();
2545 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2546 #if defined(HAS_FCNTL) && defined(F_SETFD)
2548 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2553 #ifndef IAMSUID /* in case script is not readable before setuid */
2555 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2556 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2559 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2560 (int)PERL_REVISION, (int)PERL_VERSION,
2561 (int)PERL_SUBVERSION), PL_origargv);
2562 Perl_croak(aTHX_ "Can't do setuid\n");
2566 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2567 CopFILE(PL_curcop), Strerror(errno));
2572 * I_SYSSTATVFS HAS_FSTATVFS
2574 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2575 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2576 * here so that metaconfig picks them up. */
2580 S_fd_on_nosuid_fs(pTHX_ int fd)
2582 int check_okay = 0; /* able to do all the required sys/libcalls */
2583 int on_nosuid = 0; /* the fd is on a nosuid fs */
2585 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2586 * fstatvfs() is UNIX98.
2587 * fstatfs() is 4.3 BSD.
2588 * ustat()+getmnt() is pre-4.3 BSD.
2589 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2590 * an irrelevant filesystem while trying to reach the right one.
2593 # ifdef HAS_FSTATVFS
2594 struct statvfs stfs;
2595 check_okay = fstatvfs(fd, &stfs) == 0;
2596 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2598 # ifdef PERL_MOUNT_NOSUID
2599 # if defined(HAS_FSTATFS) && \
2600 defined(HAS_STRUCT_STATFS) && \
2601 defined(HAS_STRUCT_STATFS_F_FLAGS)
2603 check_okay = fstatfs(fd, &stfs) == 0;
2604 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2606 # if defined(HAS_FSTAT) && \
2607 defined(HAS_USTAT) && \
2608 defined(HAS_GETMNT) && \
2609 defined(HAS_STRUCT_FS_DATA) && \
2612 if (fstat(fd, &fdst) == 0) {
2614 if (ustat(fdst.st_dev, &us) == 0) {
2616 /* NOSTAT_ONE here because we're not examining fields which
2617 * vary between that case and STAT_ONE. */
2618 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2619 size_t cmplen = sizeof(us.f_fname);
2620 if (sizeof(fsd.fd_req.path) < cmplen)
2621 cmplen = sizeof(fsd.fd_req.path);
2622 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2623 fdst.st_dev == fsd.fd_req.dev) {
2625 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2631 # endif /* fstat+ustat+getmnt */
2632 # endif /* fstatfs */
2634 # if defined(HAS_GETMNTENT) && \
2635 defined(HAS_HASMNTOPT) && \
2636 defined(MNTOPT_NOSUID)
2637 FILE *mtab = fopen("/etc/mtab", "r");
2638 struct mntent *entry;
2639 struct stat stb, fsb;
2641 if (mtab && (fstat(fd, &stb) == 0)) {
2642 while (entry = getmntent(mtab)) {
2643 if (stat(entry->mnt_dir, &fsb) == 0
2644 && fsb.st_dev == stb.st_dev)
2646 /* found the filesystem */
2648 if (hasmntopt(entry, MNTOPT_NOSUID))
2651 } /* A single fs may well fail its stat(). */
2656 # endif /* getmntent+hasmntopt */
2657 # endif /* PERL_MOUNT_NOSUID: fstatfs or fstat+ustat+statfs */
2658 # endif /* statvfs */
2661 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2664 #endif /* IAMSUID */
2667 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2671 /* do we need to emulate setuid on scripts? */
2673 /* This code is for those BSD systems that have setuid #! scripts disabled
2674 * in the kernel because of a security problem. Merely defining DOSUID
2675 * in perl will not fix that problem, but if you have disabled setuid
2676 * scripts in the kernel, this will attempt to emulate setuid and setgid
2677 * on scripts that have those now-otherwise-useless bits set. The setuid
2678 * root version must be called suidperl or sperlN.NNN. If regular perl
2679 * discovers that it has opened a setuid script, it calls suidperl with
2680 * the same argv that it had. If suidperl finds that the script it has
2681 * just opened is NOT setuid root, it sets the effective uid back to the
2682 * uid. We don't just make perl setuid root because that loses the
2683 * effective uid we had before invoking perl, if it was different from the
2686 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2687 * be defined in suidperl only. suidperl must be setuid root. The
2688 * Configure script will set this up for you if you want it.
2695 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2696 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2697 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2702 #ifndef HAS_SETREUID
2703 /* On this access check to make sure the directories are readable,
2704 * there is actually a small window that the user could use to make
2705 * filename point to an accessible directory. So there is a faint
2706 * chance that someone could execute a setuid script down in a
2707 * non-accessible directory. I don't know what to do about that.
2708 * But I don't think it's too important. The manual lies when
2709 * it says access() is useful in setuid programs.
2711 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2712 Perl_croak(aTHX_ "Permission denied");
2714 /* If we can swap euid and uid, then we can determine access rights
2715 * with a simple stat of the file, and then compare device and
2716 * inode to make sure we did stat() on the same file we opened.
2717 * Then we just have to make sure he or she can execute it.
2720 struct stat tmpstatbuf;
2724 setreuid(PL_euid,PL_uid) < 0
2727 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2730 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2731 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2732 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2733 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2734 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2735 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2736 Perl_croak(aTHX_ "Permission denied");
2738 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2739 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2740 (void)PerlIO_close(PL_rsfp);
2741 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2742 PerlIO_printf(PL_rsfp,
2743 "User %"Uid_t_f" tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2744 (Filename of set-id script was %s, uid %"Uid_t_f" gid %"Gid_t_f".)\n\nSincerely,\nperl\n",
2745 PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2746 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
2748 PL_statbuf.st_uid, PL_statbuf.st_gid);
2749 (void)PerlProc_pclose(PL_rsfp);
2751 Perl_croak(aTHX_ "Permission denied\n");
2755 setreuid(PL_uid,PL_euid) < 0
2757 # if defined(HAS_SETRESUID)
2758 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2761 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2762 Perl_croak(aTHX_ "Can't reswap uid and euid");
2763 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2764 Perl_croak(aTHX_ "Permission denied\n");
2766 #endif /* HAS_SETREUID */
2767 #endif /* IAMSUID */
2769 if (!S_ISREG(PL_statbuf.st_mode))
2770 Perl_croak(aTHX_ "Permission denied");
2771 if (PL_statbuf.st_mode & S_IWOTH)
2772 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2773 PL_doswitches = FALSE; /* -s is insecure in suid */
2774 CopLINE_inc(PL_curcop);
2775 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2776 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2777 Perl_croak(aTHX_ "No #! line");
2778 s = SvPV(PL_linestr,n_a)+2;
2780 while (!isSPACE(*s)) s++;
2781 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2782 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2783 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2784 Perl_croak(aTHX_ "Not a perl script");
2785 while (*s == ' ' || *s == '\t') s++;
2787 * #! arg must be what we saw above. They can invoke it by
2788 * mentioning suidperl explicitly, but they may not add any strange
2789 * arguments beyond what #! says if they do invoke suidperl that way.
2791 len = strlen(validarg);
2792 if (strEQ(validarg," PHOOEY ") ||
2793 strnNE(s,validarg,len) || !isSPACE(s[len]))
2794 Perl_croak(aTHX_ "Args must match #! line");
2797 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2798 PL_euid == PL_statbuf.st_uid)
2800 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2801 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2802 #endif /* IAMSUID */
2804 if (PL_euid) { /* oops, we're not the setuid root perl */
2805 (void)PerlIO_close(PL_rsfp);
2808 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2809 (int)PERL_REVISION, (int)PERL_VERSION,
2810 (int)PERL_SUBVERSION), PL_origargv);
2812 Perl_croak(aTHX_ "Can't do setuid\n");
2815 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2817 (void)setegid(PL_statbuf.st_gid);
2820 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2822 #ifdef HAS_SETRESGID
2823 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2825 PerlProc_setgid(PL_statbuf.st_gid);
2829 if (PerlProc_getegid() != PL_statbuf.st_gid)
2830 Perl_croak(aTHX_ "Can't do setegid!\n");
2832 if (PL_statbuf.st_mode & S_ISUID) {
2833 if (PL_statbuf.st_uid != PL_euid)
2835 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2838 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2840 #ifdef HAS_SETRESUID
2841 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2843 PerlProc_setuid(PL_statbuf.st_uid);
2847 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2848 Perl_croak(aTHX_ "Can't do seteuid!\n");
2850 else if (PL_uid) { /* oops, mustn't run as root */
2852 (void)seteuid((Uid_t)PL_uid);
2855 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2857 #ifdef HAS_SETRESUID
2858 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2860 PerlProc_setuid((Uid_t)PL_uid);
2864 if (PerlProc_geteuid() != PL_uid)
2865 Perl_croak(aTHX_ "Can't do seteuid!\n");
2868 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2869 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
2872 else if (PL_preprocess)
2873 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
2874 else if (fdscript >= 0)
2875 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
2877 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
2879 /* We absolutely must clear out any saved ids here, so we */
2880 /* exec the real perl, substituting fd script for scriptname. */
2881 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2882 PerlIO_rewind(PL_rsfp);
2883 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2884 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2885 if (!PL_origargv[which])
2886 Perl_croak(aTHX_ "Permission denied");
2887 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
2888 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
2889 #if defined(HAS_FCNTL) && defined(F_SETFD)
2890 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
2892 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
2893 (int)PERL_REVISION, (int)PERL_VERSION,
2894 (int)PERL_SUBVERSION), PL_origargv);/* try again */
2895 Perl_croak(aTHX_ "Can't do setuid\n");
2896 #endif /* IAMSUID */
2898 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
2899 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
2901 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
2902 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
2904 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
2907 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2908 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2909 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
2910 /* not set-id, must be wrapped */
2916 S_find_beginning(pTHX)
2918 register char *s, *s2;
2920 /* skip forward in input to the real script? */
2923 while (PL_doextract) {
2924 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
2925 Perl_croak(aTHX_ "No Perl script found in input\n");
2926 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
2927 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
2928 PL_doextract = FALSE;
2929 while (*s && !(isSPACE (*s) || *s == '#')) s++;
2931 while (*s == ' ' || *s == '\t') s++;
2933 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
2934 if (strnEQ(s2-4,"perl",4))
2936 while (s = moreswitches(s)) ;
2946 PL_uid = PerlProc_getuid();
2947 PL_euid = PerlProc_geteuid();
2948 PL_gid = PerlProc_getgid();
2949 PL_egid = PerlProc_getegid();
2951 PL_uid |= PL_gid << 16;
2952 PL_euid |= PL_egid << 16;
2954 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
2958 S_forbid_setid(pTHX_ char *s)
2960 if (PL_euid != PL_uid)
2961 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
2962 if (PL_egid != PL_gid)
2963 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
2967 Perl_init_debugger(pTHX)
2970 HV *ostash = PL_curstash;
2972 PL_curstash = PL_debstash;
2973 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
2974 AvREAL_off(PL_dbargs);
2975 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
2976 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
2977 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
2978 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
2979 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
2980 sv_setiv(PL_DBsingle, 0);
2981 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
2982 sv_setiv(PL_DBtrace, 0);
2983 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
2984 sv_setiv(PL_DBsignal, 0);
2985 PL_curstash = ostash;
2988 #ifndef STRESS_REALLOC
2989 #define REASONABLE(size) (size)
2991 #define REASONABLE(size) (1) /* unreasonable */
2995 Perl_init_stacks(pTHX)
2997 /* start with 128-item stack and 8K cxstack */
2998 PL_curstackinfo = new_stackinfo(REASONABLE(128),
2999 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3000 PL_curstackinfo->si_type = PERLSI_MAIN;
3001 PL_curstack = PL_curstackinfo->si_stack;
3002 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3004 PL_stack_base = AvARRAY(PL_curstack);
3005 PL_stack_sp = PL_stack_base;
3006 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3008 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3011 PL_tmps_max = REASONABLE(128);
3013 New(54,PL_markstack,REASONABLE(32),I32);
3014 PL_markstack_ptr = PL_markstack;
3015 PL_markstack_max = PL_markstack + REASONABLE(32);
3019 New(54,PL_scopestack,REASONABLE(32),I32);
3020 PL_scopestack_ix = 0;
3021 PL_scopestack_max = REASONABLE(32);
3023 New(54,PL_savestack,REASONABLE(128),ANY);
3024 PL_savestack_ix = 0;
3025 PL_savestack_max = REASONABLE(128);
3027 New(54,PL_retstack,REASONABLE(16),OP*);
3029 PL_retstack_max = REASONABLE(16);
3038 while (PL_curstackinfo->si_next)
3039 PL_curstackinfo = PL_curstackinfo->si_next;
3040 while (PL_curstackinfo) {
3041 PERL_SI *p = PL_curstackinfo->si_prev;
3042 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3043 Safefree(PL_curstackinfo->si_cxstack);
3044 Safefree(PL_curstackinfo);
3045 PL_curstackinfo = p;
3047 Safefree(PL_tmps_stack);
3048 Safefree(PL_markstack);
3049 Safefree(PL_scopestack);
3050 Safefree(PL_savestack);
3051 Safefree(PL_retstack);
3055 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3066 lex_start(PL_linestr);
3068 PL_subname = newSVpvn("main",4);
3072 S_init_predump_symbols(pTHX)
3079 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3080 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3081 GvMULTI_on(PL_stdingv);
3082 io = GvIOp(PL_stdingv);
3083 IoIFP(io) = PerlIO_stdin();
3084 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3086 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3088 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3091 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3093 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3095 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3097 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3098 GvMULTI_on(PL_stderrgv);
3099 io = GvIOp(PL_stderrgv);
3100 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3101 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3103 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3105 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3108 PL_osname = savepv(OSNAME);
3112 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3119 argc--,argv++; /* skip name of script */
3120 if (PL_doswitches) {
3121 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3124 if (argv[0][1] == '-' && !argv[0][2]) {
3128 if (s = strchr(argv[0], '=')) {
3130 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3133 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3136 PL_toptarget = NEWSV(0,0);
3137 sv_upgrade(PL_toptarget, SVt_PVFM);
3138 sv_setpvn(PL_toptarget, "", 0);
3139 PL_bodytarget = NEWSV(0,0);
3140 sv_upgrade(PL_bodytarget, SVt_PVFM);
3141 sv_setpvn(PL_bodytarget, "", 0);
3142 PL_formtarget = PL_bodytarget;
3145 if (tmpgv = gv_fetchpv("0",TRUE, SVt_PV)) {
3146 sv_setpv(GvSV(tmpgv),PL_origfilename);
3147 magicname("0", "0", 1);
3149 if (tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))
3151 sv_setpv(GvSV(tmpgv), os2_execname());
3153 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3155 if (PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV)) {
3156 GvMULTI_on(PL_argvgv);
3157 (void)gv_AVadd(PL_argvgv);
3158 av_clear(GvAVn(PL_argvgv));
3159 for (; argc > 0; argc--,argv++) {
3160 SV *sv = newSVpv(argv[0],0);
3161 av_push(GvAVn(PL_argvgv),sv);
3162 if (PL_widesyscalls)
3163 sv_utf8_upgrade(sv);
3166 if (PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV)) {
3168 GvMULTI_on(PL_envgv);
3169 hv = GvHVn(PL_envgv);
3170 hv_magic(hv, PL_envgv, 'E');
3171 #if !defined( VMS) && !defined(EPOC) /* VMS doesn't have environ array */
3172 /* Note that if the supplied env parameter is actually a copy
3173 of the global environ then it may now point to free'd memory
3174 if the environment has been modified since. To avoid this
3175 problem we treat env==NULL as meaning 'use the default'
3180 environ[0] = Nullch;
3181 for (; *env; env++) {
3182 if (!(s = strchr(*env,'=')))
3188 sv = newSVpv(s--,0);
3189 (void)hv_store(hv, *env, s - *env, sv, 0);
3191 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3192 /* Sins of the RTL. See note in my_setenv(). */
3193 (void)PerlEnv_putenv(savepv(*env));
3197 #ifdef DYNAMIC_ENV_FETCH
3198 HvNAME(hv) = savepv(ENV_HV_NAME);
3202 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
3203 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3207 S_init_perllib(pTHX)
3212 s = PerlEnv_getenv("PERL5LIB");
3216 incpush(PerlEnv_getenv("PERLLIB"), FALSE);
3218 /* Treat PERL5?LIB as a possible search list logical name -- the
3219 * "natural" VMS idiom for a Unix path string. We allow each
3220 * element to be a set of |-separated directories for compatibility.
3224 if (my_trnlnm("PERL5LIB",buf,0))
3225 do { incpush(buf,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3227 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE);
3231 /* Use the ~-expanded versions of APPLLIB (undocumented),
3232 ARCHLIB PRIVLIB SITEARCH and SITELIB
3235 incpush(APPLLIB_EXP, TRUE);
3239 incpush(ARCHLIB_EXP, FALSE);
3242 #define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3245 incpush(PRIVLIB_EXP, TRUE);
3247 incpush(PRIVLIB_EXP, FALSE);
3251 incpush(SITELIB_EXP, TRUE); /* XXX Win32 needs inc_version_list support */
3255 char *path = SITELIB_EXP;
3260 if (strrchr(buf,'/')) /* XXX Hack, Configure var needed */
3261 *strrchr(buf,'/') = '\0';
3267 #if defined(PERL_VENDORLIB_EXP)
3269 incpush(PERL_VENDORLIB_EXP, TRUE);
3271 incpush(PERL_VENDORLIB_EXP, FALSE);
3275 incpush(".", FALSE);
3279 # define PERLLIB_SEP ';'
3282 # define PERLLIB_SEP '|'
3284 # define PERLLIB_SEP ':'
3287 #ifndef PERLLIB_MANGLE
3288 # define PERLLIB_MANGLE(s,n) (s)
3292 S_incpush(pTHX_ char *p, int addsubdirs)
3294 SV *subdir = Nullsv;
3300 subdir = sv_newmortal();
3303 /* Break at all separators */
3305 SV *libdir = NEWSV(55,0);
3308 /* skip any consecutive separators */
3309 while ( *p == PERLLIB_SEP ) {
3310 /* Uncomment the next line for PATH semantics */
3311 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3315 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3316 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3321 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3322 p = Nullch; /* break out */
3326 * BEFORE pushing libdir onto @INC we may first push version- and
3327 * archname-specific sub-directories.
3330 #ifdef PERL_INC_VERSION_LIST
3331 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3332 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3333 const char **incver;
3335 struct stat tmpstatbuf;
3340 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3342 while (unix[len-1] == '/') len--; /* Cosmetic */
3343 sv_usepvn(libdir,unix,len);
3346 PerlIO_printf(Perl_error_log,
3347 "Failed to unixify @INC element \"%s\"\n",
3350 /* .../version/archname if -d .../version/archname */
3351 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/"PERL_FS_VER_FMT"/%s", libdir,
3352 (int)PERL_REVISION, (int)PERL_VERSION,
3353 (int)PERL_SUBVERSION, ARCHNAME);
3354 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3355 S_ISDIR(tmpstatbuf.st_mode))
3356 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3358 /* .../version if -d .../version */
3359 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/"PERL_FS_VER_FMT, libdir,
3360 (int)PERL_REVISION, (int)PERL_VERSION,
3361 (int)PERL_SUBVERSION);
3362 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3363 S_ISDIR(tmpstatbuf.st_mode))
3364 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3366 /* .../archname if -d .../archname */
3367 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/%s", libdir, ARCHNAME);
3368 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3369 S_ISDIR(tmpstatbuf.st_mode))
3370 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3372 #ifdef PERL_INC_VERSION_LIST
3373 for (incver = incverlist; *incver; incver++) {
3374 /* .../xxx if -d .../xxx */
3375 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/%s", libdir, *incver);
3376 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3377 S_ISDIR(tmpstatbuf.st_mode))
3378 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3383 /* finally push this lib directory on the end of @INC */
3384 av_push(GvAVn(PL_incgv), libdir);
3389 STATIC struct perl_thread *
3390 S_init_main_thread(pTHX)
3392 #if !defined(PERL_IMPLICIT_CONTEXT)
3393 struct perl_thread *thr;
3397 Newz(53, thr, 1, struct perl_thread);
3398 PL_curcop = &PL_compiling;
3399 thr->interp = PERL_GET_INTERP;
3400 thr->cvcache = newHV();
3401 thr->threadsv = newAV();
3402 /* thr->threadsvp is set when find_threadsv is called */
3403 thr->specific = newAV();
3404 thr->flags = THRf_R_JOINABLE;
3405 MUTEX_INIT(&thr->mutex);
3406 /* Handcraft thrsv similarly to mess_sv */
3407 New(53, PL_thrsv, 1, SV);
3408 Newz(53, xpv, 1, XPV);
3409 SvFLAGS(PL_thrsv) = SVt_PV;
3410 SvANY(PL_thrsv) = (void*)xpv;
3411 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3412 SvPVX(PL_thrsv) = (char*)thr;
3413 SvCUR_set(PL_thrsv, sizeof(thr));
3414 SvLEN_set(PL_thrsv, sizeof(thr));
3415 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3416 thr->oursv = PL_thrsv;
3417 PL_chopset = " \n-";
3420 MUTEX_LOCK(&PL_threads_mutex);
3425 MUTEX_UNLOCK(&PL_threads_mutex);
3427 #ifdef HAVE_THREAD_INTERN
3428 Perl_init_thread_intern(thr);
3431 #ifdef SET_THREAD_SELF
3432 SET_THREAD_SELF(thr);
3434 thr->self = pthread_self();
3435 #endif /* SET_THREAD_SELF */
3439 * These must come after the SET_THR because sv_setpvn does
3440 * SvTAINT and the taint fields require dTHR.
3442 PL_toptarget = NEWSV(0,0);
3443 sv_upgrade(PL_toptarget, SVt_PVFM);
3444 sv_setpvn(PL_toptarget, "", 0);
3445 PL_bodytarget = NEWSV(0,0);
3446 sv_upgrade(PL_bodytarget, SVt_PVFM);
3447 sv_setpvn(PL_bodytarget, "", 0);
3448 PL_formtarget = PL_bodytarget;
3449 thr->errsv = newSVpvn("", 0);
3450 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3453 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3454 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3455 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3456 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3457 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3459 PL_reginterp_cnt = 0;
3463 #endif /* USE_THREADS */
3466 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3470 line_t oldline = CopLINE(PL_curcop);
3476 while (AvFILL(paramList) >= 0) {
3477 cv = (CV*)av_shift(paramList);
3479 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3480 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3486 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3490 (void)SvPV(atsv, len);
3493 PL_curcop = &PL_compiling;
3494 CopLINE_set(PL_curcop, oldline);
3495 if (paramList == PL_beginav)
3496 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3498 Perl_sv_catpvf(aTHX_ atsv,
3499 "%s failed--call queue aborted",
3500 paramList == PL_checkav ? "CHECK"
3501 : paramList == PL_initav ? "INIT"
3503 while (PL_scopestack_ix > oldscope)
3506 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3513 /* my_exit() was called */
3514 while (PL_scopestack_ix > oldscope)
3517 PL_curstash = PL_defstash;
3518 PL_curcop = &PL_compiling;
3519 CopLINE_set(PL_curcop, oldline);
3521 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3522 if (paramList == PL_beginav)
3523 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3525 Perl_croak(aTHX_ "%s failed--call queue aborted",
3526 paramList == PL_checkav ? "CHECK"
3527 : paramList == PL_initav ? "INIT"
3534 PL_curcop = &PL_compiling;
3535 CopLINE_set(PL_curcop, oldline);
3538 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3546 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3548 S_vcall_list_body(pTHX_ va_list args)
3550 CV *cv = va_arg(args, CV*);
3551 return call_list_body(cv);
3556 S_call_list_body(pTHX_ CV *cv)
3558 PUSHMARK(PL_stack_sp);
3559 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3564 Perl_my_exit(pTHX_ U32 status)
3568 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3569 thr, (unsigned long) status));
3578 STATUS_NATIVE_SET(status);
3585 Perl_my_failure_exit(pTHX)
3588 if (vaxc$errno & 1) {
3589 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3590 STATUS_NATIVE_SET(44);
3593 if (!vaxc$errno && errno) /* unlikely */
3594 STATUS_NATIVE_SET(44);
3596 STATUS_NATIVE_SET(vaxc$errno);
3601 STATUS_POSIX_SET(errno);
3603 exitstatus = STATUS_POSIX >> 8;
3604 if (exitstatus & 255)
3605 STATUS_POSIX_SET(exitstatus);
3607 STATUS_POSIX_SET(255);
3614 S_my_exit_jump(pTHX)
3617 register PERL_CONTEXT *cx;
3622 SvREFCNT_dec(PL_e_script);
3623 PL_e_script = Nullsv;
3626 POPSTACK_TO(PL_mainstack);
3627 if (cxstack_ix >= 0) {
3630 POPBLOCK(cx,PL_curpm);
3642 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3645 p = SvPVX(PL_e_script);
3646 nl = strchr(p, '\n');
3647 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3649 filter_del(read_e_script);
3652 sv_catpvn(buf_sv, p, nl-p);
3653 sv_chop(PL_e_script, nl);