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); \
67 PERL_SET_THX(my_perl); \
71 PERL_SET_THX(my_perl); \
75 # define INIT_TLS_AND_INTERP \
77 if (!PL_curinterp) { \
78 PERL_SET_INTERP(my_perl); \
80 PERL_SET_THX(my_perl); \
85 #ifdef PERL_IMPLICIT_SYS
87 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
88 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
89 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
90 struct IPerlDir* ipD, struct IPerlSock* ipS,
91 struct IPerlProc* ipP)
93 PerlInterpreter *my_perl;
95 my_perl = (PerlInterpreter*)new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd,
96 ipLIO, ipD, ipS, ipP);
99 /* New() needs interpreter, so call malloc() instead */
100 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
102 Zero(my_perl, 1, PerlInterpreter);
119 =for apidoc perl_alloc
121 Allocates a new Perl interpreter. See L<perlembed>.
129 PerlInterpreter *my_perl;
131 /* New() needs interpreter, so call malloc() instead */
132 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
135 Zero(my_perl, 1, PerlInterpreter);
138 #endif /* PERL_IMPLICIT_SYS */
141 =for apidoc perl_construct
143 Initializes a new Perl interpreter. See L<perlembed>.
149 perl_construct(pTHXx)
154 struct perl_thread *thr = NULL;
155 #endif /* FAKE_THREADS */
156 #endif /* USE_THREADS */
160 PL_perl_destruct_level = 1;
162 if (PL_perl_destruct_level > 0)
166 /* Init the real globals (and main thread)? */
169 MUTEX_INIT(&PL_sv_mutex);
171 * Safe to use basic SV functions from now on (though
172 * not things like mortals or tainting yet).
174 MUTEX_INIT(&PL_eval_mutex);
175 COND_INIT(&PL_eval_cond);
176 MUTEX_INIT(&PL_threads_mutex);
177 COND_INIT(&PL_nthreads_cond);
178 # ifdef EMULATE_ATOMIC_REFCOUNTS
179 MUTEX_INIT(&PL_svref_mutex);
180 # endif /* EMULATE_ATOMIC_REFCOUNTS */
182 MUTEX_INIT(&PL_cred_mutex);
184 thr = init_main_thread();
185 #endif /* USE_THREADS */
187 #ifdef PERL_FLEXIBLE_EXCEPTIONS
188 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
191 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
193 PL_linestr = NEWSV(65,79);
194 sv_upgrade(PL_linestr,SVt_PVIV);
196 if (!SvREADONLY(&PL_sv_undef)) {
197 /* set read-only and try to insure than we wont see REFCNT==0
200 SvREADONLY_on(&PL_sv_undef);
201 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
203 sv_setpv(&PL_sv_no,PL_No);
205 SvREADONLY_on(&PL_sv_no);
206 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
208 sv_setpv(&PL_sv_yes,PL_Yes);
210 SvREADONLY_on(&PL_sv_yes);
211 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
216 /* PL_sighandlerp = sighandler; */
218 PL_sighandlerp = Perl_sighandler;
220 PL_pidstatus = newHV();
224 * There is no way we can refer to them from Perl so close them to save
225 * space. The other alternative would be to provide STDAUX and STDPRN
228 (void)fclose(stdaux);
229 (void)fclose(stdprn);
233 PL_nrs = newSVpvn("\n", 1);
234 PL_rs = SvREFCNT_inc(PL_nrs);
239 PL_lex_state = LEX_NOTPARSING;
245 SET_NUMERIC_STANDARD();
249 PL_patchlevel = NEWSV(0,4);
250 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
251 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
252 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
253 s = (U8*)SvPVX(PL_patchlevel);
254 s = uv_to_utf8(s, (UV)PERL_REVISION);
255 s = uv_to_utf8(s, (UV)PERL_VERSION);
256 s = uv_to_utf8(s, (UV)PERL_SUBVERSION);
258 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
259 SvPOK_on(PL_patchlevel);
260 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
261 + ((NV)PERL_VERSION / (NV)1000)
262 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
263 + ((NV)PERL_SUBVERSION / (NV)1000000)
266 SvNOK_on(PL_patchlevel); /* dual valued */
267 SvUTF8_on(PL_patchlevel);
268 SvREADONLY_on(PL_patchlevel);
271 #if defined(LOCAL_PATCH_COUNT)
272 PL_localpatches = local_patches; /* For possible -v */
275 PerlIO_init(); /* Hook to IO system */
277 PL_fdpid = newAV(); /* for remembering popen pids by fd */
278 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
279 PL_errors = newSVpvn("",0);
285 =for apidoc perl_destruct
287 Shuts down a Perl interpreter. See L<perlembed>.
296 int destruct_level; /* 0=none, 1=full, 2=full with checks */
302 #endif /* USE_THREADS */
304 /* wait for all pseudo-forked children to finish */
305 PERL_WAIT_FOR_CHILDREN;
309 /* Pass 1 on any remaining threads: detach joinables, join zombies */
311 MUTEX_LOCK(&PL_threads_mutex);
312 DEBUG_S(PerlIO_printf(Perl_debug_log,
313 "perl_destruct: waiting for %d threads...\n",
315 for (t = thr->next; t != thr; t = t->next) {
316 MUTEX_LOCK(&t->mutex);
317 switch (ThrSTATE(t)) {
320 DEBUG_S(PerlIO_printf(Perl_debug_log,
321 "perl_destruct: joining zombie %p\n", t));
322 ThrSETSTATE(t, THRf_DEAD);
323 MUTEX_UNLOCK(&t->mutex);
326 * The SvREFCNT_dec below may take a long time (e.g. av
327 * may contain an object scalar whose destructor gets
328 * called) so we have to unlock threads_mutex and start
331 MUTEX_UNLOCK(&PL_threads_mutex);
333 SvREFCNT_dec((SV*)av);
334 DEBUG_S(PerlIO_printf(Perl_debug_log,
335 "perl_destruct: joined zombie %p OK\n", t));
337 case THRf_R_JOINABLE:
338 DEBUG_S(PerlIO_printf(Perl_debug_log,
339 "perl_destruct: detaching thread %p\n", t));
340 ThrSETSTATE(t, THRf_R_DETACHED);
342 * We unlock threads_mutex and t->mutex in the opposite order
343 * from which we locked them just so that DETACH won't
344 * deadlock if it panics. It's only a breach of good style
345 * not a bug since they are unlocks not locks.
347 MUTEX_UNLOCK(&PL_threads_mutex);
349 MUTEX_UNLOCK(&t->mutex);
352 DEBUG_S(PerlIO_printf(Perl_debug_log,
353 "perl_destruct: ignoring %p (state %u)\n",
355 MUTEX_UNLOCK(&t->mutex);
356 /* fall through and out */
359 /* We leave the above "Pass 1" loop with threads_mutex still locked */
361 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
362 while (PL_nthreads > 1)
364 DEBUG_S(PerlIO_printf(Perl_debug_log,
365 "perl_destruct: final wait for %d threads\n",
367 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
369 /* At this point, we're the last thread */
370 MUTEX_UNLOCK(&PL_threads_mutex);
371 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
372 MUTEX_DESTROY(&PL_threads_mutex);
373 COND_DESTROY(&PL_nthreads_cond);
374 #endif /* !defined(FAKE_THREADS) */
375 #endif /* USE_THREADS */
377 destruct_level = PL_perl_destruct_level;
381 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
383 if (destruct_level < i)
392 /* We must account for everything. */
394 /* Destroy the main CV and syntax tree */
396 PL_curpad = AvARRAY(PL_comppad);
397 op_free(PL_main_root);
398 PL_main_root = Nullop;
400 PL_curcop = &PL_compiling;
401 PL_main_start = Nullop;
402 SvREFCNT_dec(PL_main_cv);
406 if (PL_sv_objcount) {
408 * Try to destruct global references. We do this first so that the
409 * destructors and destructees still exist. Some sv's might remain.
410 * Non-referenced objects are on their own.
415 /* unhook hooks which will soon be, or use, destroyed data */
416 SvREFCNT_dec(PL_warnhook);
417 PL_warnhook = Nullsv;
418 SvREFCNT_dec(PL_diehook);
421 /* call exit list functions */
422 while (PL_exitlistlen-- > 0)
423 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
425 Safefree(PL_exitlist);
427 if (destruct_level == 0){
429 DEBUG_P(debprofdump());
431 /* The exit() function will do everything that needs doing. */
435 /* loosen bonds of global variables */
438 (void)PerlIO_close(PL_rsfp);
442 /* Filters for program text */
443 SvREFCNT_dec(PL_rsfp_filters);
444 PL_rsfp_filters = Nullav;
447 PL_preprocess = FALSE;
453 PL_doswitches = FALSE;
454 PL_dowarn = G_WARN_OFF;
455 PL_doextract = FALSE;
456 PL_sawampersand = FALSE; /* must save all match strings */
459 Safefree(PL_inplace);
461 SvREFCNT_dec(PL_patchlevel);
464 SvREFCNT_dec(PL_e_script);
465 PL_e_script = Nullsv;
468 /* magical thingies */
470 Safefree(PL_ofs); /* $, */
473 Safefree(PL_ors); /* $\ */
476 SvREFCNT_dec(PL_rs); /* $/ */
479 SvREFCNT_dec(PL_nrs); /* $/ helper */
482 PL_multiline = 0; /* $* */
483 Safefree(PL_osname); /* $^O */
486 SvREFCNT_dec(PL_statname);
487 PL_statname = Nullsv;
490 /* defgv, aka *_ should be taken care of elsewhere */
492 /* clean up after study() */
493 SvREFCNT_dec(PL_lastscream);
494 PL_lastscream = Nullsv;
495 Safefree(PL_screamfirst);
497 Safefree(PL_screamnext);
501 Safefree(PL_efloatbuf);
502 PL_efloatbuf = Nullch;
505 /* startup and shutdown function lists */
506 SvREFCNT_dec(PL_beginav);
507 SvREFCNT_dec(PL_endav);
508 SvREFCNT_dec(PL_checkav);
509 SvREFCNT_dec(PL_initav);
515 /* shortcuts just get cleared */
521 PL_argvoutgv = Nullgv;
523 PL_stderrgv = Nullgv;
524 PL_last_in_gv = Nullgv;
526 PL_debstash = Nullhv;
528 /* reset so print() ends up where we expect */
531 SvREFCNT_dec(PL_argvout_stack);
532 PL_argvout_stack = Nullav;
534 SvREFCNT_dec(PL_modglobal);
535 PL_modglobal = Nullhv;
536 SvREFCNT_dec(PL_preambleav);
537 PL_preambleav = Nullav;
538 SvREFCNT_dec(PL_subname);
540 SvREFCNT_dec(PL_linestr);
542 SvREFCNT_dec(PL_pidstatus);
543 PL_pidstatus = Nullhv;
544 SvREFCNT_dec(PL_toptarget);
545 PL_toptarget = Nullsv;
546 SvREFCNT_dec(PL_bodytarget);
547 PL_bodytarget = Nullsv;
548 PL_formtarget = Nullsv;
550 /* free locale stuff */
551 #ifdef USE_LOCALE_COLLATE
552 Safefree(PL_collation_name);
553 PL_collation_name = Nullch;
556 #ifdef USE_LOCALE_NUMERIC
557 Safefree(PL_numeric_name);
558 PL_numeric_name = Nullch;
561 /* clear utf8 character classes */
562 SvREFCNT_dec(PL_utf8_alnum);
563 SvREFCNT_dec(PL_utf8_alnumc);
564 SvREFCNT_dec(PL_utf8_ascii);
565 SvREFCNT_dec(PL_utf8_alpha);
566 SvREFCNT_dec(PL_utf8_space);
567 SvREFCNT_dec(PL_utf8_cntrl);
568 SvREFCNT_dec(PL_utf8_graph);
569 SvREFCNT_dec(PL_utf8_digit);
570 SvREFCNT_dec(PL_utf8_upper);
571 SvREFCNT_dec(PL_utf8_lower);
572 SvREFCNT_dec(PL_utf8_print);
573 SvREFCNT_dec(PL_utf8_punct);
574 SvREFCNT_dec(PL_utf8_xdigit);
575 SvREFCNT_dec(PL_utf8_mark);
576 SvREFCNT_dec(PL_utf8_toupper);
577 SvREFCNT_dec(PL_utf8_tolower);
578 PL_utf8_alnum = Nullsv;
579 PL_utf8_alnumc = Nullsv;
580 PL_utf8_ascii = Nullsv;
581 PL_utf8_alpha = Nullsv;
582 PL_utf8_space = Nullsv;
583 PL_utf8_cntrl = Nullsv;
584 PL_utf8_graph = Nullsv;
585 PL_utf8_digit = Nullsv;
586 PL_utf8_upper = Nullsv;
587 PL_utf8_lower = Nullsv;
588 PL_utf8_print = Nullsv;
589 PL_utf8_punct = Nullsv;
590 PL_utf8_xdigit = Nullsv;
591 PL_utf8_mark = Nullsv;
592 PL_utf8_toupper = Nullsv;
593 PL_utf8_totitle = Nullsv;
594 PL_utf8_tolower = Nullsv;
596 if (!specialWARN(PL_compiling.cop_warnings))
597 SvREFCNT_dec(PL_compiling.cop_warnings);
598 PL_compiling.cop_warnings = Nullsv;
600 SvREFCNT_dec(CopFILEGV(&PL_compiling));
601 CopFILEGV_set(&PL_compiling, Nullgv);
604 /* Prepare to destruct main symbol table. */
609 SvREFCNT_dec(PL_curstname);
610 PL_curstname = Nullsv;
612 /* clear queued errors */
613 SvREFCNT_dec(PL_errors);
617 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
618 if (PL_scopestack_ix != 0)
619 Perl_warner(aTHX_ WARN_INTERNAL,
620 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
621 (long)PL_scopestack_ix);
622 if (PL_savestack_ix != 0)
623 Perl_warner(aTHX_ WARN_INTERNAL,
624 "Unbalanced saves: %ld more saves than restores\n",
625 (long)PL_savestack_ix);
626 if (PL_tmps_floor != -1)
627 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
628 (long)PL_tmps_floor + 1);
629 if (cxstack_ix != -1)
630 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
631 (long)cxstack_ix + 1);
634 /* Now absolutely destruct everything, somehow or other, loops or no. */
636 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
637 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
638 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
639 last_sv_count = PL_sv_count;
642 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
643 SvFLAGS(PL_fdpid) |= SVt_PVAV;
644 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
645 SvFLAGS(PL_strtab) |= SVt_PVHV;
647 AvREAL_off(PL_fdpid); /* no surviving entries */
648 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
651 /* Destruct the global string table. */
653 /* Yell and reset the HeVAL() slots that are still holding refcounts,
654 * so that sv_free() won't fail on them.
662 max = HvMAX(PL_strtab);
663 array = HvARRAY(PL_strtab);
666 if (hent && ckWARN_d(WARN_INTERNAL)) {
667 Perl_warner(aTHX_ WARN_INTERNAL,
668 "Unbalanced string table refcount: (%d) for \"%s\"",
669 HeVAL(hent) - Nullsv, HeKEY(hent));
670 HeVAL(hent) = Nullsv;
680 SvREFCNT_dec(PL_strtab);
682 /* free special SVs */
684 SvREFCNT(&PL_sv_yes) = 0;
685 sv_clear(&PL_sv_yes);
686 SvANY(&PL_sv_yes) = NULL;
687 SvFLAGS(&PL_sv_yes) = 0;
689 SvREFCNT(&PL_sv_no) = 0;
691 SvANY(&PL_sv_no) = NULL;
692 SvFLAGS(&PL_sv_no) = 0;
694 SvREFCNT(&PL_sv_undef) = 0;
695 SvREADONLY_off(&PL_sv_undef);
697 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
698 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
702 /* No SVs have survived, need to clean out */
703 Safefree(PL_origfilename);
704 Safefree(PL_reg_start_tmp);
706 Safefree(PL_reg_curpm);
707 Safefree(PL_reg_poscache);
708 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
709 Safefree(PL_op_mask);
711 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
713 DEBUG_P(debprofdump());
715 MUTEX_DESTROY(&PL_strtab_mutex);
716 MUTEX_DESTROY(&PL_sv_mutex);
717 MUTEX_DESTROY(&PL_eval_mutex);
718 MUTEX_DESTROY(&PL_cred_mutex);
719 COND_DESTROY(&PL_eval_cond);
720 #ifdef EMULATE_ATOMIC_REFCOUNTS
721 MUTEX_DESTROY(&PL_svref_mutex);
722 #endif /* EMULATE_ATOMIC_REFCOUNTS */
724 /* As the penultimate thing, free the non-arena SV for thrsv */
725 Safefree(SvPVX(PL_thrsv));
726 Safefree(SvANY(PL_thrsv));
729 #endif /* USE_THREADS */
731 /* As the absolutely last thing, free the non-arena SV for mess() */
734 /* it could have accumulated taint magic */
735 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
738 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
739 moremagic = mg->mg_moremagic;
740 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
741 Safefree(mg->mg_ptr);
745 /* we know that type >= SVt_PV */
746 (void)SvOOK_off(PL_mess_sv);
747 Safefree(SvPVX(PL_mess_sv));
748 Safefree(SvANY(PL_mess_sv));
749 Safefree(PL_mess_sv);
755 =for apidoc perl_free
757 Releases a Perl interpreter. See L<perlembed>.
765 #if defined(PERL_OBJECT)
768 # if defined(PERL_IMPLICIT_SYS) && defined(WIN32)
769 void *host = w32_internal_host;
771 win32_delete_internal_host(host);
779 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
781 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
782 PL_exitlist[PL_exitlistlen].fn = fn;
783 PL_exitlist[PL_exitlistlen].ptr = ptr;
788 =for apidoc perl_parse
790 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
796 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
806 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
809 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
810 setuid perl scripts securely.\n");
814 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
815 _dyld_lookup_and_bind
816 ("__environ", (unsigned long *) &environ_pointer, NULL);
821 #ifndef VMS /* VMS doesn't have environ array */
822 PL_origenviron = environ;
827 /* Come here if running an undumped a.out. */
829 PL_origfilename = savepv(argv[0]);
830 PL_do_undump = FALSE;
831 cxstack_ix = -1; /* start label stack again */
833 init_postdump_symbols(argc,argv,env);
838 PL_curpad = AvARRAY(PL_comppad);
839 op_free(PL_main_root);
840 PL_main_root = Nullop;
842 PL_main_start = Nullop;
843 SvREFCNT_dec(PL_main_cv);
847 oldscope = PL_scopestack_ix;
848 PL_dowarn = G_WARN_OFF;
850 #ifdef PERL_FLEXIBLE_EXCEPTIONS
851 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
857 #ifndef PERL_FLEXIBLE_EXCEPTIONS
858 parse_body(env,xsinit);
861 call_list(oldscope, PL_checkav);
868 /* my_exit() was called */
869 while (PL_scopestack_ix > oldscope)
872 PL_curstash = PL_defstash;
874 call_list(oldscope, PL_checkav);
875 ret = STATUS_NATIVE_EXPORT;
878 PerlIO_printf(Perl_error_log, "panic: top_env\n");
886 #ifdef PERL_FLEXIBLE_EXCEPTIONS
888 S_vparse_body(pTHX_ va_list args)
890 char **env = va_arg(args, char**);
891 XSINIT_t xsinit = va_arg(args, XSINIT_t);
893 return parse_body(env, xsinit);
898 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
901 int argc = PL_origargc;
902 char **argv = PL_origargv;
903 char *scriptname = NULL;
905 VOL bool dosearch = FALSE;
910 char *cddir = Nullch;
912 sv_setpvn(PL_linestr,"",0);
913 sv = newSVpvn("",0); /* first used for -I flags */
917 for (argc--,argv++; argc > 0; argc--,argv++) {
918 if (argv[0][0] != '-' || !argv[0][1])
922 validarg = " PHOOEY ";
931 win32_argv2utf8(argc-1, argv+1);
934 #ifndef PERL_STRICT_CR
958 if ((s = moreswitches(s)))
968 if (PL_euid != PL_uid || PL_egid != PL_gid)
969 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
971 PL_e_script = newSVpvn("",0);
972 filter_add(read_e_script, NULL);
975 sv_catpv(PL_e_script, s);
977 sv_catpv(PL_e_script, argv[1]);
981 Perl_croak(aTHX_ "No code specified for -e");
982 sv_catpv(PL_e_script, "\n");
985 case 'I': /* -I handled both here and in moreswitches() */
987 if (!*++s && (s=argv[1]) != Nullch) {
992 STRLEN len = strlen(s);
994 incpush(p, TRUE, TRUE);
995 sv_catpvn(sv, "-I", 2);
996 sv_catpvn(sv, p, len);
997 sv_catpvn(sv, " ", 1);
1001 Perl_croak(aTHX_ "No directory specified for -I");
1005 PL_preprocess = TRUE;
1015 PL_preambleav = newAV();
1016 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1018 PL_Sv = newSVpv("print myconfig();",0);
1020 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1022 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1024 sv_catpv(PL_Sv,"\" Compile-time options:");
1026 sv_catpv(PL_Sv," DEBUGGING");
1028 # ifdef MULTIPLICITY
1029 sv_catpv(PL_Sv," MULTIPLICITY");
1032 sv_catpv(PL_Sv," USE_THREADS");
1034 # ifdef USE_ITHREADS
1035 sv_catpv(PL_Sv," USE_ITHREADS");
1037 # ifdef USE_64_BIT_INT
1038 sv_catpv(PL_Sv," USE_64_BIT_INT");
1040 # ifdef USE_64_BIT_ALL
1041 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1043 # ifdef USE_LONG_DOUBLE
1044 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1046 # ifdef USE_LARGE_FILES
1047 sv_catpv(PL_Sv," USE_LARGE_FILES");
1050 sv_catpv(PL_Sv," USE_SOCKS");
1053 sv_catpv(PL_Sv," PERL_OBJECT");
1055 # ifdef PERL_IMPLICIT_CONTEXT
1056 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1058 # ifdef PERL_IMPLICIT_SYS
1059 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1061 sv_catpv(PL_Sv,"\\n\",");
1063 #if defined(LOCAL_PATCH_COUNT)
1064 if (LOCAL_PATCH_COUNT > 0) {
1066 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1067 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1068 if (PL_localpatches[i])
1069 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1073 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1076 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1078 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1081 sv_catpv(PL_Sv, "; \
1083 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1084 print \" \\%ENV:\\n @env\\n\" if @env; \
1085 print \" \\@INC:\\n @INC\\n\";");
1088 PL_Sv = newSVpv("config_vars(qw(",0);
1089 sv_catpv(PL_Sv, ++s);
1090 sv_catpv(PL_Sv, "))");
1093 av_push(PL_preambleav, PL_Sv);
1094 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1097 PL_doextract = TRUE;
1105 if (!*++s || isSPACE(*s)) {
1109 /* catch use of gnu style long options */
1110 if (strEQ(s, "version")) {
1114 if (strEQ(s, "help")) {
1121 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1127 #ifndef SECURE_INTERNAL_GETENV
1130 (s = PerlEnv_getenv("PERL5OPT")))
1134 if (*s == '-' && *(s+1) == 'T')
1147 if (!strchr("DIMUdmw", *s))
1148 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1149 s = moreswitches(s);
1155 scriptname = argv[0];
1158 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1160 else if (scriptname == Nullch) {
1162 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1170 open_script(scriptname,dosearch,sv,&fdscript);
1172 validate_suid(validarg, scriptname,fdscript);
1174 #if defined(SIGCHLD) || defined(SIGCLD)
1177 # define SIGCHLD SIGCLD
1179 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1180 if (sigstate == SIG_IGN) {
1181 if (ckWARN(WARN_SIGNAL))
1182 Perl_warner(aTHX_ WARN_SIGNAL,
1183 "Can't ignore signal CHLD, forcing to default");
1184 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1191 if (cddir && PerlDir_chdir(cddir) < 0)
1192 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1196 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1197 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1198 CvUNIQUE_on(PL_compcv);
1200 PL_comppad = newAV();
1201 av_push(PL_comppad, Nullsv);
1202 PL_curpad = AvARRAY(PL_comppad);
1203 PL_comppad_name = newAV();
1204 PL_comppad_name_fill = 0;
1205 PL_min_intro_pending = 0;
1208 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1209 PL_curpad[0] = (SV*)newAV();
1210 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1211 CvOWNER(PL_compcv) = 0;
1212 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1213 MUTEX_INIT(CvMUTEXP(PL_compcv));
1214 #endif /* USE_THREADS */
1216 comppadlist = newAV();
1217 AvREAL_off(comppadlist);
1218 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1219 av_store(comppadlist, 1, (SV*)PL_comppad);
1220 CvPADLIST(PL_compcv) = comppadlist;
1222 boot_core_UNIVERSAL();
1224 boot_core_xsutils();
1228 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1229 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__)
1237 init_predump_symbols();
1238 /* init_postdump_symbols not currently designed to be called */
1239 /* more than once (ENV isn't cleared first, for example) */
1240 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1242 init_postdump_symbols(argc,argv,env);
1246 /* now parse the script */
1248 SETERRNO(0,SS$_NORMAL);
1250 if (yyparse() || PL_error_count) {
1252 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1254 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1258 CopLINE_set(PL_curcop, 0);
1259 PL_curstash = PL_defstash;
1260 PL_preprocess = FALSE;
1262 SvREFCNT_dec(PL_e_script);
1263 PL_e_script = Nullsv;
1266 /* now that script is parsed, we can modify record separator */
1267 SvREFCNT_dec(PL_rs);
1268 PL_rs = SvREFCNT_inc(PL_nrs);
1269 sv_setsv(get_sv("/", TRUE), PL_rs);
1274 SAVECOPFILE(PL_curcop);
1275 SAVECOPLINE(PL_curcop);
1276 gv_check(PL_defstash);
1283 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1284 dump_mstats("after compilation:");
1293 =for apidoc perl_run
1295 Tells a Perl interpreter to run. See L<perlembed>.
1311 oldscope = PL_scopestack_ix;
1313 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1315 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1321 cxstack_ix = -1; /* start context stack again */
1323 case 0: /* normal completion */
1324 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1329 case 2: /* my_exit() */
1330 while (PL_scopestack_ix > oldscope)
1333 PL_curstash = PL_defstash;
1334 if (PL_endav && !PL_minus_c)
1335 call_list(oldscope, PL_endav);
1337 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1338 dump_mstats("after execution: ");
1340 ret = STATUS_NATIVE_EXPORT;
1344 POPSTACK_TO(PL_mainstack);
1347 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1357 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1359 S_vrun_body(pTHX_ va_list args)
1361 I32 oldscope = va_arg(args, I32);
1363 return run_body(oldscope);
1369 S_run_body(pTHX_ I32 oldscope)
1373 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1374 PL_sawampersand ? "Enabling" : "Omitting"));
1376 if (!PL_restartop) {
1377 DEBUG_x(dump_all());
1378 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1379 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1383 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1386 if (PERLDB_SINGLE && PL_DBsingle)
1387 sv_setiv(PL_DBsingle, 1);
1389 call_list(oldscope, PL_initav);
1395 PL_op = PL_restartop;
1399 else if (PL_main_start) {
1400 CvDEPTH(PL_main_cv) = 1;
1401 PL_op = PL_main_start;
1411 =for apidoc p||get_sv
1413 Returns the SV of the specified Perl scalar. If C<create> is set and the
1414 Perl variable does not exist then it will be created. If C<create> is not
1415 set and the variable does not exist then NULL is returned.
1421 Perl_get_sv(pTHX_ const char *name, I32 create)
1425 if (name[1] == '\0' && !isALPHA(name[0])) {
1426 PADOFFSET tmp = find_threadsv(name);
1427 if (tmp != NOT_IN_PAD) {
1429 return THREADSV(tmp);
1432 #endif /* USE_THREADS */
1433 gv = gv_fetchpv(name, create, SVt_PV);
1440 =for apidoc p||get_av
1442 Returns the AV of the specified Perl array. If C<create> is set and the
1443 Perl variable does not exist then it will be created. If C<create> is not
1444 set and the variable does not exist then NULL is returned.
1450 Perl_get_av(pTHX_ const char *name, I32 create)
1452 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1461 =for apidoc p||get_hv
1463 Returns the HV of the specified Perl hash. If C<create> is set and the
1464 Perl variable does not exist then it will be created. If C<create> is not
1465 set and the variable does not exist then NULL is returned.
1471 Perl_get_hv(pTHX_ const char *name, I32 create)
1473 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1482 =for apidoc p||get_cv
1484 Returns the CV of the specified Perl subroutine. If C<create> is set and
1485 the Perl subroutine does not exist then it will be declared (which has the
1486 same effect as saying C<sub name;>). If C<create> is not set and the
1487 subroutine does not exist then NULL is returned.
1493 Perl_get_cv(pTHX_ const char *name, I32 create)
1495 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1496 /* XXX unsafe for threads if eval_owner isn't held */
1497 /* XXX this is probably not what they think they're getting.
1498 * It has the same effect as "sub name;", i.e. just a forward
1500 if (create && !GvCVu(gv))
1501 return newSUB(start_subparse(FALSE, 0),
1502 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1510 /* Be sure to refetch the stack pointer after calling these routines. */
1513 =for apidoc p||call_argv
1515 Performs a callback to the specified Perl sub. See L<perlcall>.
1521 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1523 /* See G_* flags in cop.h */
1524 /* null terminated arg list */
1531 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1536 return call_pv(sub_name, flags);
1540 =for apidoc p||call_pv
1542 Performs a callback to the specified Perl sub. See L<perlcall>.
1548 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1549 /* name of the subroutine */
1550 /* See G_* flags in cop.h */
1552 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1556 =for apidoc p||call_method
1558 Performs a callback to the specified Perl method. The blessed object must
1559 be on the stack. See L<perlcall>.
1565 Perl_call_method(pTHX_ const char *methname, I32 flags)
1566 /* name of the subroutine */
1567 /* See G_* flags in cop.h */
1575 XPUSHs(sv_2mortal(newSVpv(methname,0)));
1580 return call_sv(*PL_stack_sp--, flags);
1583 /* May be called with any of a CV, a GV, or an SV containing the name. */
1585 =for apidoc p||call_sv
1587 Performs a callback to the Perl sub whose name is in the SV. See
1594 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1596 /* See G_* flags in cop.h */
1599 LOGOP myop; /* fake syntax tree node */
1603 bool oldcatch = CATCH_GET;
1608 if (flags & G_DISCARD) {
1613 Zero(&myop, 1, LOGOP);
1614 myop.op_next = Nullop;
1615 if (!(flags & G_NOARGS))
1616 myop.op_flags |= OPf_STACKED;
1617 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1618 (flags & G_ARRAY) ? OPf_WANT_LIST :
1623 EXTEND(PL_stack_sp, 1);
1624 *++PL_stack_sp = sv;
1626 oldscope = PL_scopestack_ix;
1628 if (PERLDB_SUB && PL_curstash != PL_debstash
1629 /* Handle first BEGIN of -d. */
1630 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1631 /* Try harder, since this may have been a sighandler, thus
1632 * curstash may be meaningless. */
1633 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1634 && !(flags & G_NODEBUG))
1635 PL_op->op_private |= OPpENTERSUB_DB;
1637 if (!(flags & G_EVAL)) {
1639 call_body((OP*)&myop, FALSE);
1640 retval = PL_stack_sp - (PL_stack_base + oldmark);
1641 CATCH_SET(oldcatch);
1644 cLOGOP->op_other = PL_op;
1646 /* we're trying to emulate pp_entertry() here */
1648 register PERL_CONTEXT *cx;
1649 I32 gimme = GIMME_V;
1654 push_return(PL_op->op_next);
1655 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1657 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1659 PL_in_eval = EVAL_INEVAL;
1660 if (flags & G_KEEPERR)
1661 PL_in_eval |= EVAL_KEEPERR;
1667 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1669 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1676 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1678 call_body((OP*)&myop, FALSE);
1680 retval = PL_stack_sp - (PL_stack_base + oldmark);
1681 if (!(flags & G_KEEPERR))
1688 /* my_exit() was called */
1689 PL_curstash = PL_defstash;
1692 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1693 Perl_croak(aTHX_ "Callback called exit");
1698 PL_op = PL_restartop;
1702 PL_stack_sp = PL_stack_base + oldmark;
1703 if (flags & G_ARRAY)
1707 *++PL_stack_sp = &PL_sv_undef;
1712 if (PL_scopestack_ix > oldscope) {
1716 register PERL_CONTEXT *cx;
1728 if (flags & G_DISCARD) {
1729 PL_stack_sp = PL_stack_base + oldmark;
1738 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1740 S_vcall_body(pTHX_ va_list args)
1742 OP *myop = va_arg(args, OP*);
1743 int is_eval = va_arg(args, int);
1745 call_body(myop, is_eval);
1751 S_call_body(pTHX_ OP *myop, int is_eval)
1755 if (PL_op == myop) {
1757 PL_op = Perl_pp_entereval(aTHX);
1759 PL_op = Perl_pp_entersub(aTHX);
1765 /* Eval a string. The G_EVAL flag is always assumed. */
1768 =for apidoc p||eval_sv
1770 Tells Perl to C<eval> the string in the SV.
1776 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1778 /* See G_* flags in cop.h */
1781 UNOP myop; /* fake syntax tree node */
1782 I32 oldmark = SP - PL_stack_base;
1789 if (flags & G_DISCARD) {
1796 Zero(PL_op, 1, UNOP);
1797 EXTEND(PL_stack_sp, 1);
1798 *++PL_stack_sp = sv;
1799 oldscope = PL_scopestack_ix;
1801 if (!(flags & G_NOARGS))
1802 myop.op_flags = OPf_STACKED;
1803 myop.op_next = Nullop;
1804 myop.op_type = OP_ENTEREVAL;
1805 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1806 (flags & G_ARRAY) ? OPf_WANT_LIST :
1808 if (flags & G_KEEPERR)
1809 myop.op_flags |= OPf_SPECIAL;
1811 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1813 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1820 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1822 call_body((OP*)&myop,TRUE);
1824 retval = PL_stack_sp - (PL_stack_base + oldmark);
1825 if (!(flags & G_KEEPERR))
1832 /* my_exit() was called */
1833 PL_curstash = PL_defstash;
1836 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1837 Perl_croak(aTHX_ "Callback called exit");
1842 PL_op = PL_restartop;
1846 PL_stack_sp = PL_stack_base + oldmark;
1847 if (flags & G_ARRAY)
1851 *++PL_stack_sp = &PL_sv_undef;
1857 if (flags & G_DISCARD) {
1858 PL_stack_sp = PL_stack_base + oldmark;
1868 =for apidoc p||eval_pv
1870 Tells Perl to C<eval> the given string and return an SV* result.
1876 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1879 SV* sv = newSVpv(p, 0);
1882 eval_sv(sv, G_SCALAR);
1889 if (croak_on_error && SvTRUE(ERRSV)) {
1891 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1897 /* Require a module. */
1900 =for apidoc p||require_pv
1902 Tells Perl to C<require> a module.
1908 Perl_require_pv(pTHX_ const char *pv)
1912 PUSHSTACKi(PERLSI_REQUIRE);
1914 sv = sv_newmortal();
1915 sv_setpv(sv, "require '");
1918 eval_sv(sv, G_DISCARD);
1924 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
1928 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
1929 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1933 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
1935 /* This message really ought to be max 23 lines.
1936 * Removed -h because the user already knows that opton. Others? */
1938 static char *usage_msg[] = {
1939 "-0[octal] specify record separator (\\0, if no argument)",
1940 "-a autosplit mode with -n or -p (splits $_ into @F)",
1941 "-C enable native wide character system interfaces",
1942 "-c check syntax only (runs BEGIN and END blocks)",
1943 "-d[:debugger] run program under debugger",
1944 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1945 "-e 'command' one line of program (several -e's allowed, omit programfile)",
1946 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
1947 "-i[extension] edit <> files in place (makes backup if extension supplied)",
1948 "-Idirectory specify @INC/#include directory (several -I's allowed)",
1949 "-l[octal] enable line ending processing, specifies line terminator",
1950 "-[mM][-]module execute `use/no module...' before executing program",
1951 "-n assume 'while (<>) { ... }' loop around program",
1952 "-p assume loop like -n but print line also, like sed",
1953 "-P run program through C preprocessor before compilation",
1954 "-s enable rudimentary parsing for switches after programfile",
1955 "-S look for programfile using PATH environment variable",
1956 "-T enable tainting checks",
1957 "-u dump core after parsing program",
1958 "-U allow unsafe operations",
1959 "-v print version, subversion (includes VERY IMPORTANT perl info)",
1960 "-V[:variable] print configuration summary (or a single Config.pm variable)",
1961 "-w enable many useful warnings (RECOMMENDED)",
1962 "-W enable all warnings",
1963 "-X disable all warnings",
1964 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
1968 char **p = usage_msg;
1970 printf("\nUsage: %s [switches] [--] [programfile] [arguments]", name);
1972 printf("\n %s", *p++);
1975 /* This routine handles any switches that can be given during run */
1978 Perl_moreswitches(pTHX_ char *s)
1987 numlen = 0; /* disallow underscores */
1988 rschar = (U32)scan_oct(s, 4, &numlen);
1989 SvREFCNT_dec(PL_nrs);
1990 if (rschar & ~((U8)~0))
1991 PL_nrs = &PL_sv_undef;
1992 else if (!rschar && numlen >= 2)
1993 PL_nrs = newSVpvn("", 0);
1996 PL_nrs = newSVpvn(&ch, 1);
2001 PL_widesyscalls = TRUE;
2006 PL_splitstr = savepv(s + 1);
2020 if (*s == ':' || *s == '=') {
2021 my_setenv("PERL5DB", Perl_form(aTHX_ "use Devel::%s;", ++s));
2025 PL_perldb = PERLDB_ALL;
2033 if (isALPHA(s[1])) {
2034 static char debopts[] = "psltocPmfrxuLHXDS";
2037 for (s++; *s && (d = strchr(debopts,*s)); s++)
2038 PL_debug |= 1 << (d - debopts);
2041 PL_debug = atoi(s+1);
2042 for (s++; isDIGIT(*s); s++) ;
2044 PL_debug |= 0x80000000;
2047 if (ckWARN_d(WARN_DEBUGGING))
2048 Perl_warner(aTHX_ WARN_DEBUGGING,
2049 "Recompile perl with -DDEBUGGING to use -D switch\n");
2050 for (s++; isALNUM(*s); s++) ;
2056 usage(PL_origargv[0]);
2060 Safefree(PL_inplace);
2061 PL_inplace = savepv(s+1);
2063 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2066 if (*s == '-') /* Additional switches on #! line. */
2070 case 'I': /* -I handled both here and in parse_perl() */
2073 while (*s && isSPACE(*s))
2078 /* ignore trailing spaces (possibly followed by other switches) */
2080 for (e = p; *e && !isSPACE(*e); e++) ;
2084 } while (*p && *p != '-');
2085 e = savepvn(s, e-s);
2086 incpush(e, TRUE, TRUE);
2093 Perl_croak(aTHX_ "No directory specified for -I");
2101 PL_ors = savepv("\n");
2103 numlen = 0; /* disallow underscores */
2104 *PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2109 if (RsPARA(PL_nrs)) {
2114 PL_ors = SvPV(PL_nrs, PL_orslen);
2115 PL_ors = savepvn(PL_ors, PL_orslen);
2119 forbid_setid("-M"); /* XXX ? */
2122 forbid_setid("-m"); /* XXX ? */
2127 /* -M-foo == 'no foo' */
2128 if (*s == '-') { use = "no "; ++s; }
2129 sv = newSVpv(use,0);
2131 /* We allow -M'Module qw(Foo Bar)' */
2132 while(isALNUM(*s) || *s==':') ++s;
2134 sv_catpv(sv, start);
2135 if (*(start-1) == 'm') {
2137 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2138 sv_catpv( sv, " ()");
2142 Perl_croak(aTHX_ "Module name required with -%c option",
2144 sv_catpvn(sv, start, s-start);
2145 sv_catpv(sv, " split(/,/,q{");
2151 PL_preambleav = newAV();
2152 av_push(PL_preambleav, sv);
2155 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2167 PL_doswitches = TRUE;
2172 Perl_croak(aTHX_ "Too late for \"-T\" option");
2176 PL_do_undump = TRUE;
2184 printf(Perl_form(aTHX_ "\nThis is perl, v%vd built for %s",
2185 PL_patchlevel, ARCHNAME));
2186 #if defined(LOCAL_PATCH_COUNT)
2187 if (LOCAL_PATCH_COUNT > 0)
2188 printf("\n(with %d registered patch%s, see perl -V for more detail)",
2189 (int)LOCAL_PATCH_COUNT, (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2192 printf("\n\nCopyright 1987-2000, Larry Wall\n");
2194 printf("\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2197 printf("djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n");
2198 printf("djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2201 printf("\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2202 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2205 printf("atariST series port, ++jrb bammi@cadence.com\n");
2208 printf("BeOS port Copyright Tom Spindler, 1997-1999\n");
2211 printf("MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
2214 printf("MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2217 printf("Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2220 printf("VM/ESA port by Neale Ferguson, 1998-1999\n");
2223 printf("BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2226 printf("MiNT port by Guido Flohr, 1997-1999\n");
2229 printf("EPOC port by Olaf Flebbe, 1999-2000\n");
2231 #ifdef BINARY_BUILD_NOTICE
2232 BINARY_BUILD_NOTICE;
2235 Perl may be copied only under the terms of either the Artistic License or the\n\
2236 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
2237 Complete documentation for Perl, including FAQ lists, should be found on\n\
2238 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2239 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2242 if (! (PL_dowarn & G_WARN_ALL_MASK))
2243 PL_dowarn |= G_WARN_ON;
2247 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2248 PL_compiling.cop_warnings = pWARN_ALL ;
2252 PL_dowarn = G_WARN_ALL_OFF;
2253 PL_compiling.cop_warnings = pWARN_NONE ;
2258 if (s[1] == '-') /* Additional switches on #! line. */
2263 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2269 #ifdef ALTERNATE_SHEBANG
2270 case 'S': /* OS/2 needs -S on "extproc" line. */
2278 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2283 /* compliments of Tom Christiansen */
2285 /* unexec() can be found in the Gnu emacs distribution */
2286 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2289 Perl_my_unexec(pTHX)
2297 prog = newSVpv(BIN_EXP, 0);
2298 sv_catpv(prog, "/perl");
2299 file = newSVpv(PL_origfilename, 0);
2300 sv_catpv(file, ".perldump");
2302 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2303 /* unexec prints msg to stderr in case of failure */
2304 PerlProc_exit(status);
2307 # include <lib$routines.h>
2308 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2310 ABORT(); /* for use with undump */
2315 /* initialize curinterp */
2320 #ifdef PERL_OBJECT /* XXX kludge */
2323 PL_chopset = " \n-"; \
2324 PL_copline = NOLINE; \
2325 PL_curcop = &PL_compiling;\
2326 PL_curcopdb = NULL; \
2328 PL_dumpindent = 4; \
2329 PL_laststatval = -1; \
2330 PL_laststype = OP_STAT; \
2331 PL_maxscream = -1; \
2332 PL_maxsysfd = MAXSYSFD; \
2333 PL_statname = Nullsv; \
2334 PL_tmps_floor = -1; \
2336 PL_op_mask = NULL; \
2337 PL_laststatval = -1; \
2338 PL_laststype = OP_STAT; \
2339 PL_mess_sv = Nullsv; \
2340 PL_splitstr = " "; \
2341 PL_generation = 100; \
2342 PL_exitlist = NULL; \
2343 PL_exitlistlen = 0; \
2345 PL_in_clean_objs = FALSE; \
2346 PL_in_clean_all = FALSE; \
2347 PL_profiledata = NULL; \
2349 PL_rsfp_filters = Nullav; \
2354 # ifdef MULTIPLICITY
2355 # define PERLVAR(var,type)
2356 # define PERLVARA(var,n,type)
2357 # if defined(PERL_IMPLICIT_CONTEXT)
2358 # if defined(USE_THREADS)
2359 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2360 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2361 # else /* !USE_THREADS */
2362 # define PERLVARI(var,type,init) aTHX->var = init;
2363 # define PERLVARIC(var,type,init) aTHX->var = init;
2364 # endif /* USE_THREADS */
2366 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2367 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2369 # include "intrpvar.h"
2370 # ifndef USE_THREADS
2371 # include "thrdvar.h"
2378 # define PERLVAR(var,type)
2379 # define PERLVARA(var,n,type)
2380 # define PERLVARI(var,type,init) PL_##var = init;
2381 # define PERLVARIC(var,type,init) PL_##var = init;
2382 # include "intrpvar.h"
2383 # ifndef USE_THREADS
2384 # include "thrdvar.h"
2396 S_init_main_stash(pTHX)
2401 /* Note that strtab is a rather special HV. Assumptions are made
2402 about not iterating on it, and not adding tie magic to it.
2403 It is properly deallocated in perl_destruct() */
2404 PL_strtab = newHV();
2406 MUTEX_INIT(&PL_strtab_mutex);
2408 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2409 hv_ksplit(PL_strtab, 512);
2411 PL_curstash = PL_defstash = newHV();
2412 PL_curstname = newSVpvn("main",4);
2413 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2414 SvREFCNT_dec(GvHV(gv));
2415 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2417 HvNAME(PL_defstash) = savepv("main");
2418 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2419 GvMULTI_on(PL_incgv);
2420 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2421 GvMULTI_on(PL_hintgv);
2422 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2423 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2424 GvMULTI_on(PL_errgv);
2425 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2426 GvMULTI_on(PL_replgv);
2427 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2428 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2429 sv_setpvn(ERRSV, "", 0);
2430 PL_curstash = PL_defstash;
2431 CopSTASH_set(&PL_compiling, PL_defstash);
2432 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2433 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2434 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2435 /* We must init $/ before switches are processed. */
2436 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2440 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2447 PL_origfilename = savepv("-e");
2450 /* if find_script() returns, it returns a malloc()-ed value */
2451 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2453 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2454 char *s = scriptname + 8;
2455 *fdscript = atoi(s);
2459 scriptname = savepv(s + 1);
2460 Safefree(PL_origfilename);
2461 PL_origfilename = scriptname;
2466 CopFILE_set(PL_curcop, PL_origfilename);
2467 if (strEQ(PL_origfilename,"-"))
2469 if (*fdscript >= 0) {
2470 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2471 #if defined(HAS_FCNTL) && defined(F_SETFD)
2473 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2476 else if (PL_preprocess) {
2477 char *cpp_cfg = CPPSTDIN;
2478 SV *cpp = newSVpvn("",0);
2479 SV *cmd = NEWSV(0,0);
2481 if (strEQ(cpp_cfg, "cppstdin"))
2482 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2483 sv_catpv(cpp, cpp_cfg);
2485 sv_catpvn(sv, "-I", 2);
2486 sv_catpv(sv,PRIVLIB_EXP);
2489 Perl_sv_setpvf(aTHX_ cmd, "\
2490 sed %s -e \"/^[^#]/b\" \
2491 -e \"/^#[ ]*include[ ]/b\" \
2492 -e \"/^#[ ]*define[ ]/b\" \
2493 -e \"/^#[ ]*if[ ]/b\" \
2494 -e \"/^#[ ]*ifdef[ ]/b\" \
2495 -e \"/^#[ ]*ifndef[ ]/b\" \
2496 -e \"/^#[ ]*else/b\" \
2497 -e \"/^#[ ]*elif[ ]/b\" \
2498 -e \"/^#[ ]*undef[ ]/b\" \
2499 -e \"/^#[ ]*endif/b\" \
2501 %s | %"SVf" -C %"SVf" %s",
2502 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2505 Perl_sv_setpvf(aTHX_ cmd, "\
2506 %s %s -e '/^[^#]/b' \
2507 -e '/^#[ ]*include[ ]/b' \
2508 -e '/^#[ ]*define[ ]/b' \
2509 -e '/^#[ ]*if[ ]/b' \
2510 -e '/^#[ ]*ifdef[ ]/b' \
2511 -e '/^#[ ]*ifndef[ ]/b' \
2512 -e '/^#[ ]*else/b' \
2513 -e '/^#[ ]*elif[ ]/b' \
2514 -e '/^#[ ]*undef[ ]/b' \
2515 -e '/^#[ ]*endif/b' \
2517 %s | %"SVf" %"SVf" %s",
2519 Perl_sv_setpvf(aTHX_ cmd, "\
2520 %s %s -e '/^[^#]/b' \
2521 -e '/^#[ ]*include[ ]/b' \
2522 -e '/^#[ ]*define[ ]/b' \
2523 -e '/^#[ ]*if[ ]/b' \
2524 -e '/^#[ ]*ifdef[ ]/b' \
2525 -e '/^#[ ]*ifndef[ ]/b' \
2526 -e '/^#[ ]*else/b' \
2527 -e '/^#[ ]*elif[ ]/b' \
2528 -e '/^#[ ]*undef[ ]/b' \
2529 -e '/^#[ ]*endif/b' \
2531 %s | %"SVf" -C %"SVf" %s",
2538 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2540 scriptname, cpp, sv, CPPMINUS);
2541 PL_doextract = FALSE;
2542 #ifdef IAMSUID /* actually, this is caught earlier */
2543 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2545 (void)seteuid(PL_uid); /* musn't stay setuid root */
2548 (void)setreuid((Uid_t)-1, PL_uid);
2550 #ifdef HAS_SETRESUID
2551 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2553 PerlProc_setuid(PL_uid);
2557 if (PerlProc_geteuid() != PL_uid)
2558 Perl_croak(aTHX_ "Can't do seteuid!\n");
2560 #endif /* IAMSUID */
2561 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2565 else if (!*scriptname) {
2566 forbid_setid("program input from stdin");
2567 PL_rsfp = PerlIO_stdin();
2570 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2571 #if defined(HAS_FCNTL) && defined(F_SETFD)
2573 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2578 #ifndef IAMSUID /* in case script is not readable before setuid */
2580 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2581 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2584 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2585 (int)PERL_REVISION, (int)PERL_VERSION,
2586 (int)PERL_SUBVERSION), PL_origargv);
2587 Perl_croak(aTHX_ "Can't do setuid\n");
2591 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2592 CopFILE(PL_curcop), Strerror(errno));
2597 * I_SYSSTATVFS HAS_FSTATVFS
2599 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2600 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2601 * here so that metaconfig picks them up. */
2605 S_fd_on_nosuid_fs(pTHX_ int fd)
2607 int check_okay = 0; /* able to do all the required sys/libcalls */
2608 int on_nosuid = 0; /* the fd is on a nosuid fs */
2610 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2611 * fstatvfs() is UNIX98.
2612 * fstatfs() is 4.3 BSD.
2613 * ustat()+getmnt() is pre-4.3 BSD.
2614 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2615 * an irrelevant filesystem while trying to reach the right one.
2618 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2620 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2621 defined(HAS_FSTATVFS)
2622 # define FD_ON_NOSUID_CHECK_OKAY
2623 struct statvfs stfs;
2625 check_okay = fstatvfs(fd, &stfs) == 0;
2626 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2627 # endif /* fstatvfs */
2629 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2630 defined(PERL_MOUNT_NOSUID) && \
2631 defined(HAS_FSTATFS) && \
2632 defined(HAS_STRUCT_STATFS) && \
2633 defined(HAS_STRUCT_STATFS_F_FLAGS)
2634 # define FD_ON_NOSUID_CHECK_OKAY
2637 check_okay = fstatfs(fd, &stfs) == 0;
2638 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2639 # endif /* fstatfs */
2641 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2642 defined(PERL_MOUNT_NOSUID) && \
2643 defined(HAS_FSTAT) && \
2644 defined(HAS_USTAT) && \
2645 defined(HAS_GETMNT) && \
2646 defined(HAS_STRUCT_FS_DATA) && \
2648 # define FD_ON_NOSUID_CHECK_OKAY
2651 if (fstat(fd, &fdst) == 0) {
2653 if (ustat(fdst.st_dev, &us) == 0) {
2655 /* NOSTAT_ONE here because we're not examining fields which
2656 * vary between that case and STAT_ONE. */
2657 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2658 size_t cmplen = sizeof(us.f_fname);
2659 if (sizeof(fsd.fd_req.path) < cmplen)
2660 cmplen = sizeof(fsd.fd_req.path);
2661 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2662 fdst.st_dev == fsd.fd_req.dev) {
2664 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2670 # endif /* fstat+ustat+getmnt */
2672 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2673 defined(HAS_GETMNTENT) && \
2674 defined(HAS_HASMNTOPT) && \
2675 defined(MNTOPT_NOSUID)
2676 # define FD_ON_NOSUID_CHECK_OKAY
2677 FILE *mtab = fopen("/etc/mtab", "r");
2678 struct mntent *entry;
2679 struct stat stb, fsb;
2681 if (mtab && (fstat(fd, &stb) == 0)) {
2682 while (entry = getmntent(mtab)) {
2683 if (stat(entry->mnt_dir, &fsb) == 0
2684 && fsb.st_dev == stb.st_dev)
2686 /* found the filesystem */
2688 if (hasmntopt(entry, MNTOPT_NOSUID))
2691 } /* A single fs may well fail its stat(). */
2696 # endif /* getmntent+hasmntopt */
2699 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2702 #endif /* IAMSUID */
2705 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2711 /* do we need to emulate setuid on scripts? */
2713 /* This code is for those BSD systems that have setuid #! scripts disabled
2714 * in the kernel because of a security problem. Merely defining DOSUID
2715 * in perl will not fix that problem, but if you have disabled setuid
2716 * scripts in the kernel, this will attempt to emulate setuid and setgid
2717 * on scripts that have those now-otherwise-useless bits set. The setuid
2718 * root version must be called suidperl or sperlN.NNN. If regular perl
2719 * discovers that it has opened a setuid script, it calls suidperl with
2720 * the same argv that it had. If suidperl finds that the script it has
2721 * just opened is NOT setuid root, it sets the effective uid back to the
2722 * uid. We don't just make perl setuid root because that loses the
2723 * effective uid we had before invoking perl, if it was different from the
2726 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2727 * be defined in suidperl only. suidperl must be setuid root. The
2728 * Configure script will set this up for you if you want it.
2735 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2736 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2737 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2742 #ifndef HAS_SETREUID
2743 /* On this access check to make sure the directories are readable,
2744 * there is actually a small window that the user could use to make
2745 * filename point to an accessible directory. So there is a faint
2746 * chance that someone could execute a setuid script down in a
2747 * non-accessible directory. I don't know what to do about that.
2748 * But I don't think it's too important. The manual lies when
2749 * it says access() is useful in setuid programs.
2751 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2752 Perl_croak(aTHX_ "Permission denied");
2754 /* If we can swap euid and uid, then we can determine access rights
2755 * with a simple stat of the file, and then compare device and
2756 * inode to make sure we did stat() on the same file we opened.
2757 * Then we just have to make sure he or she can execute it.
2760 struct stat tmpstatbuf;
2764 setreuid(PL_euid,PL_uid) < 0
2767 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2770 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2771 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2772 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2773 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2774 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2775 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2776 Perl_croak(aTHX_ "Permission denied");
2778 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2779 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2780 (void)PerlIO_close(PL_rsfp);
2781 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2782 PerlIO_printf(PL_rsfp,
2783 "User %"Uid_t_f" tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2784 (Filename of set-id script was %s, uid %"Uid_t_f" gid %"Gid_t_f".)\n\nSincerely,\nperl\n",
2785 PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2786 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
2788 PL_statbuf.st_uid, PL_statbuf.st_gid);
2789 (void)PerlProc_pclose(PL_rsfp);
2791 Perl_croak(aTHX_ "Permission denied\n");
2795 setreuid(PL_uid,PL_euid) < 0
2797 # if defined(HAS_SETRESUID)
2798 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2801 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2802 Perl_croak(aTHX_ "Can't reswap uid and euid");
2803 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2804 Perl_croak(aTHX_ "Permission denied\n");
2806 #endif /* HAS_SETREUID */
2807 #endif /* IAMSUID */
2809 if (!S_ISREG(PL_statbuf.st_mode))
2810 Perl_croak(aTHX_ "Permission denied");
2811 if (PL_statbuf.st_mode & S_IWOTH)
2812 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2813 PL_doswitches = FALSE; /* -s is insecure in suid */
2814 CopLINE_inc(PL_curcop);
2815 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2816 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2817 Perl_croak(aTHX_ "No #! line");
2818 s = SvPV(PL_linestr,n_a)+2;
2820 while (!isSPACE(*s)) s++;
2821 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2822 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2823 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2824 Perl_croak(aTHX_ "Not a perl script");
2825 while (*s == ' ' || *s == '\t') s++;
2827 * #! arg must be what we saw above. They can invoke it by
2828 * mentioning suidperl explicitly, but they may not add any strange
2829 * arguments beyond what #! says if they do invoke suidperl that way.
2831 len = strlen(validarg);
2832 if (strEQ(validarg," PHOOEY ") ||
2833 strnNE(s,validarg,len) || !isSPACE(s[len]))
2834 Perl_croak(aTHX_ "Args must match #! line");
2837 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2838 PL_euid == PL_statbuf.st_uid)
2840 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2841 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2842 #endif /* IAMSUID */
2844 if (PL_euid) { /* oops, we're not the setuid root perl */
2845 (void)PerlIO_close(PL_rsfp);
2848 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2849 (int)PERL_REVISION, (int)PERL_VERSION,
2850 (int)PERL_SUBVERSION), PL_origargv);
2852 Perl_croak(aTHX_ "Can't do setuid\n");
2855 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2857 (void)setegid(PL_statbuf.st_gid);
2860 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2862 #ifdef HAS_SETRESGID
2863 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2865 PerlProc_setgid(PL_statbuf.st_gid);
2869 if (PerlProc_getegid() != PL_statbuf.st_gid)
2870 Perl_croak(aTHX_ "Can't do setegid!\n");
2872 if (PL_statbuf.st_mode & S_ISUID) {
2873 if (PL_statbuf.st_uid != PL_euid)
2875 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2878 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2880 #ifdef HAS_SETRESUID
2881 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2883 PerlProc_setuid(PL_statbuf.st_uid);
2887 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2888 Perl_croak(aTHX_ "Can't do seteuid!\n");
2890 else if (PL_uid) { /* oops, mustn't run as root */
2892 (void)seteuid((Uid_t)PL_uid);
2895 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2897 #ifdef HAS_SETRESUID
2898 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2900 PerlProc_setuid((Uid_t)PL_uid);
2904 if (PerlProc_geteuid() != PL_uid)
2905 Perl_croak(aTHX_ "Can't do seteuid!\n");
2908 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2909 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
2912 else if (PL_preprocess)
2913 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
2914 else if (fdscript >= 0)
2915 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
2917 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
2919 /* We absolutely must clear out any saved ids here, so we */
2920 /* exec the real perl, substituting fd script for scriptname. */
2921 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2922 PerlIO_rewind(PL_rsfp);
2923 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2924 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2925 if (!PL_origargv[which])
2926 Perl_croak(aTHX_ "Permission denied");
2927 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
2928 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
2929 #if defined(HAS_FCNTL) && defined(F_SETFD)
2930 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
2932 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
2933 (int)PERL_REVISION, (int)PERL_VERSION,
2934 (int)PERL_SUBVERSION), PL_origargv);/* try again */
2935 Perl_croak(aTHX_ "Can't do setuid\n");
2936 #endif /* IAMSUID */
2938 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
2939 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
2941 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
2942 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
2944 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
2947 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2948 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2949 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
2950 /* not set-id, must be wrapped */
2956 S_find_beginning(pTHX)
2958 register char *s, *s2;
2960 /* skip forward in input to the real script? */
2963 while (PL_doextract) {
2964 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
2965 Perl_croak(aTHX_ "No Perl script found in input\n");
2966 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
2967 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
2968 PL_doextract = FALSE;
2969 while (*s && !(isSPACE (*s) || *s == '#')) s++;
2971 while (*s == ' ' || *s == '\t') s++;
2973 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
2974 if (strnEQ(s2-4,"perl",4))
2976 while ((s = moreswitches(s)))
2987 PL_uid = PerlProc_getuid();
2988 PL_euid = PerlProc_geteuid();
2989 PL_gid = PerlProc_getgid();
2990 PL_egid = PerlProc_getegid();
2992 PL_uid |= PL_gid << 16;
2993 PL_euid |= PL_egid << 16;
2995 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
2999 S_forbid_setid(pTHX_ char *s)
3001 if (PL_euid != PL_uid)
3002 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3003 if (PL_egid != PL_gid)
3004 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3008 Perl_init_debugger(pTHX)
3011 HV *ostash = PL_curstash;
3013 PL_curstash = PL_debstash;
3014 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3015 AvREAL_off(PL_dbargs);
3016 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3017 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3018 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3019 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3020 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3021 sv_setiv(PL_DBsingle, 0);
3022 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3023 sv_setiv(PL_DBtrace, 0);
3024 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3025 sv_setiv(PL_DBsignal, 0);
3026 PL_curstash = ostash;
3029 #ifndef STRESS_REALLOC
3030 #define REASONABLE(size) (size)
3032 #define REASONABLE(size) (1) /* unreasonable */
3036 Perl_init_stacks(pTHX)
3038 /* start with 128-item stack and 8K cxstack */
3039 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3040 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3041 PL_curstackinfo->si_type = PERLSI_MAIN;
3042 PL_curstack = PL_curstackinfo->si_stack;
3043 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3045 PL_stack_base = AvARRAY(PL_curstack);
3046 PL_stack_sp = PL_stack_base;
3047 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3049 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3052 PL_tmps_max = REASONABLE(128);
3054 New(54,PL_markstack,REASONABLE(32),I32);
3055 PL_markstack_ptr = PL_markstack;
3056 PL_markstack_max = PL_markstack + REASONABLE(32);
3060 New(54,PL_scopestack,REASONABLE(32),I32);
3061 PL_scopestack_ix = 0;
3062 PL_scopestack_max = REASONABLE(32);
3064 New(54,PL_savestack,REASONABLE(128),ANY);
3065 PL_savestack_ix = 0;
3066 PL_savestack_max = REASONABLE(128);
3068 New(54,PL_retstack,REASONABLE(16),OP*);
3070 PL_retstack_max = REASONABLE(16);
3079 while (PL_curstackinfo->si_next)
3080 PL_curstackinfo = PL_curstackinfo->si_next;
3081 while (PL_curstackinfo) {
3082 PERL_SI *p = PL_curstackinfo->si_prev;
3083 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3084 Safefree(PL_curstackinfo->si_cxstack);
3085 Safefree(PL_curstackinfo);
3086 PL_curstackinfo = p;
3088 Safefree(PL_tmps_stack);
3089 Safefree(PL_markstack);
3090 Safefree(PL_scopestack);
3091 Safefree(PL_savestack);
3092 Safefree(PL_retstack);
3096 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3107 lex_start(PL_linestr);
3109 PL_subname = newSVpvn("main",4);
3113 S_init_predump_symbols(pTHX)
3119 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3120 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3121 GvMULTI_on(PL_stdingv);
3122 io = GvIOp(PL_stdingv);
3123 IoIFP(io) = PerlIO_stdin();
3124 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3126 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3128 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3131 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3133 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3135 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3137 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3138 GvMULTI_on(PL_stderrgv);
3139 io = GvIOp(PL_stderrgv);
3140 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3141 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3143 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3145 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3148 PL_osname = savepv(OSNAME);
3152 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3159 argc--,argv++; /* skip name of script */
3160 if (PL_doswitches) {
3161 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3164 if (argv[0][1] == '-' && !argv[0][2]) {
3168 if ((s = strchr(argv[0], '='))) {
3170 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3173 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3176 PL_toptarget = NEWSV(0,0);
3177 sv_upgrade(PL_toptarget, SVt_PVFM);
3178 sv_setpvn(PL_toptarget, "", 0);
3179 PL_bodytarget = NEWSV(0,0);
3180 sv_upgrade(PL_bodytarget, SVt_PVFM);
3181 sv_setpvn(PL_bodytarget, "", 0);
3182 PL_formtarget = PL_bodytarget;
3185 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3186 sv_setpv(GvSV(tmpgv),PL_origfilename);
3187 magicname("0", "0", 1);
3189 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3191 sv_setpv(GvSV(tmpgv), os2_execname());
3193 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3195 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3196 GvMULTI_on(PL_argvgv);
3197 (void)gv_AVadd(PL_argvgv);
3198 av_clear(GvAVn(PL_argvgv));
3199 for (; argc > 0; argc--,argv++) {
3200 SV *sv = newSVpv(argv[0],0);
3201 av_push(GvAVn(PL_argvgv),sv);
3202 if (PL_widesyscalls)
3203 sv_utf8_upgrade(sv);
3206 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3208 GvMULTI_on(PL_envgv);
3209 hv = GvHVn(PL_envgv);
3210 hv_magic(hv, PL_envgv, 'E');
3211 #if !defined( VMS) && !defined(EPOC) /* VMS doesn't have environ array */
3212 /* Note that if the supplied env parameter is actually a copy
3213 of the global environ then it may now point to free'd memory
3214 if the environment has been modified since. To avoid this
3215 problem we treat env==NULL as meaning 'use the default'
3220 environ[0] = Nullch;
3221 for (; *env; env++) {
3222 if (!(s = strchr(*env,'=')))
3228 sv = newSVpv(s--,0);
3229 (void)hv_store(hv, *env, s - *env, sv, 0);
3231 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3232 /* Sins of the RTL. See note in my_setenv(). */
3233 (void)PerlEnv_putenv(savepv(*env));
3237 #ifdef DYNAMIC_ENV_FETCH
3238 HvNAME(hv) = savepv(ENV_HV_NAME);
3242 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3243 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3247 S_init_perllib(pTHX)
3252 s = PerlEnv_getenv("PERL5LIB");
3254 incpush(s, TRUE, TRUE);
3256 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3258 /* Treat PERL5?LIB as a possible search list logical name -- the
3259 * "natural" VMS idiom for a Unix path string. We allow each
3260 * element to be a set of |-separated directories for compatibility.
3264 if (my_trnlnm("PERL5LIB",buf,0))
3265 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3267 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3271 /* Use the ~-expanded versions of APPLLIB (undocumented),
3272 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3275 incpush(APPLLIB_EXP, TRUE, TRUE);
3279 incpush(ARCHLIB_EXP, FALSE, FALSE);
3282 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3285 incpush(PRIVLIB_EXP, TRUE, FALSE);
3287 incpush(PRIVLIB_EXP, FALSE, FALSE);
3291 /* sitearch is always relative to sitelib on Windows for
3292 * DLL-based path intuition to work correctly */
3293 # if !defined(WIN32)
3294 incpush(SITEARCH_EXP, FALSE, FALSE);
3300 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3302 incpush(SITELIB_EXP, FALSE, FALSE);
3306 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3307 incpush(SITELIB_STEM, FALSE, TRUE);
3310 #ifdef PERL_VENDORARCH_EXP
3311 /* vendorarch is always relative to vendorlib on Windows for
3312 * DLL-based path intuition to work correctly */
3313 # if !defined(WIN32)
3314 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3318 #ifdef PERL_VENDORLIB_EXP
3320 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3322 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3326 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3327 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3330 #ifdef PERL_OTHERLIBDIRS
3331 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3335 incpush(".", FALSE, FALSE);
3339 # define PERLLIB_SEP ';'
3342 # define PERLLIB_SEP '|'
3344 # define PERLLIB_SEP ':'
3347 #ifndef PERLLIB_MANGLE
3348 # define PERLLIB_MANGLE(s,n) (s)
3352 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3354 SV *subdir = Nullsv;
3359 if (addsubdirs || addoldvers) {
3360 subdir = sv_newmortal();
3363 /* Break at all separators */
3365 SV *libdir = NEWSV(55,0);
3368 /* skip any consecutive separators */
3369 while ( *p == PERLLIB_SEP ) {
3370 /* Uncomment the next line for PATH semantics */
3371 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3375 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3376 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3381 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3382 p = Nullch; /* break out */
3386 * BEFORE pushing libdir onto @INC we may first push version- and
3387 * archname-specific sub-directories.
3389 if (addsubdirs || addoldvers) {
3390 #ifdef PERL_INC_VERSION_LIST
3391 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3392 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3393 const char **incver;
3395 struct stat tmpstatbuf;
3400 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3402 while (unix[len-1] == '/') len--; /* Cosmetic */
3403 sv_usepvn(libdir,unix,len);
3406 PerlIO_printf(Perl_error_log,
3407 "Failed to unixify @INC element \"%s\"\n",
3411 /* .../version/archname if -d .../version/archname */
3412 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/"PERL_FS_VER_FMT"/%s",
3414 (int)PERL_REVISION, (int)PERL_VERSION,
3415 (int)PERL_SUBVERSION, ARCHNAME);
3416 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3417 S_ISDIR(tmpstatbuf.st_mode))
3418 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3420 /* .../version if -d .../version */
3421 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/"PERL_FS_VER_FMT, libdir,
3422 (int)PERL_REVISION, (int)PERL_VERSION,
3423 (int)PERL_SUBVERSION);
3424 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3425 S_ISDIR(tmpstatbuf.st_mode))
3426 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3428 /* .../archname if -d .../archname */
3429 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/%s", libdir, ARCHNAME);
3430 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3431 S_ISDIR(tmpstatbuf.st_mode))
3432 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3435 #ifdef PERL_INC_VERSION_LIST
3437 for (incver = incverlist; *incver; incver++) {
3438 /* .../xxx if -d .../xxx */
3439 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/%s", libdir, *incver);
3440 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3441 S_ISDIR(tmpstatbuf.st_mode))
3442 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3448 /* finally push this lib directory on the end of @INC */
3449 av_push(GvAVn(PL_incgv), libdir);
3454 STATIC struct perl_thread *
3455 S_init_main_thread(pTHX)
3457 #if !defined(PERL_IMPLICIT_CONTEXT)
3458 struct perl_thread *thr;
3462 Newz(53, thr, 1, struct perl_thread);
3463 PL_curcop = &PL_compiling;
3464 thr->interp = PERL_GET_INTERP;
3465 thr->cvcache = newHV();
3466 thr->threadsv = newAV();
3467 /* thr->threadsvp is set when find_threadsv is called */
3468 thr->specific = newAV();
3469 thr->flags = THRf_R_JOINABLE;
3470 MUTEX_INIT(&thr->mutex);
3471 /* Handcraft thrsv similarly to mess_sv */
3472 New(53, PL_thrsv, 1, SV);
3473 Newz(53, xpv, 1, XPV);
3474 SvFLAGS(PL_thrsv) = SVt_PV;
3475 SvANY(PL_thrsv) = (void*)xpv;
3476 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3477 SvPVX(PL_thrsv) = (char*)thr;
3478 SvCUR_set(PL_thrsv, sizeof(thr));
3479 SvLEN_set(PL_thrsv, sizeof(thr));
3480 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3481 thr->oursv = PL_thrsv;
3482 PL_chopset = " \n-";
3485 MUTEX_LOCK(&PL_threads_mutex);
3490 MUTEX_UNLOCK(&PL_threads_mutex);
3492 #ifdef HAVE_THREAD_INTERN
3493 Perl_init_thread_intern(thr);
3496 #ifdef SET_THREAD_SELF
3497 SET_THREAD_SELF(thr);
3499 thr->self = pthread_self();
3500 #endif /* SET_THREAD_SELF */
3504 * These must come after the SET_THR because sv_setpvn does
3505 * SvTAINT and the taint fields require dTHR.
3507 PL_toptarget = NEWSV(0,0);
3508 sv_upgrade(PL_toptarget, SVt_PVFM);
3509 sv_setpvn(PL_toptarget, "", 0);
3510 PL_bodytarget = NEWSV(0,0);
3511 sv_upgrade(PL_bodytarget, SVt_PVFM);
3512 sv_setpvn(PL_bodytarget, "", 0);
3513 PL_formtarget = PL_bodytarget;
3514 thr->errsv = newSVpvn("", 0);
3515 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3518 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3519 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3520 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3521 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3522 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3524 PL_reginterp_cnt = 0;
3528 #endif /* USE_THREADS */
3531 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3535 line_t oldline = CopLINE(PL_curcop);
3541 while (AvFILL(paramList) >= 0) {
3542 cv = (CV*)av_shift(paramList);
3544 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3545 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3551 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3555 (void)SvPV(atsv, len);
3558 PL_curcop = &PL_compiling;
3559 CopLINE_set(PL_curcop, oldline);
3560 if (paramList == PL_beginav)
3561 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3563 Perl_sv_catpvf(aTHX_ atsv,
3564 "%s failed--call queue aborted",
3565 paramList == PL_checkav ? "CHECK"
3566 : paramList == PL_initav ? "INIT"
3568 while (PL_scopestack_ix > oldscope)
3571 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3578 /* my_exit() was called */
3579 while (PL_scopestack_ix > oldscope)
3582 PL_curstash = PL_defstash;
3583 PL_curcop = &PL_compiling;
3584 CopLINE_set(PL_curcop, oldline);
3586 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3587 if (paramList == PL_beginav)
3588 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3590 Perl_croak(aTHX_ "%s failed--call queue aborted",
3591 paramList == PL_checkav ? "CHECK"
3592 : paramList == PL_initav ? "INIT"
3599 PL_curcop = &PL_compiling;
3600 CopLINE_set(PL_curcop, oldline);
3603 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3611 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3613 S_vcall_list_body(pTHX_ va_list args)
3615 CV *cv = va_arg(args, CV*);
3616 return call_list_body(cv);
3621 S_call_list_body(pTHX_ CV *cv)
3623 PUSHMARK(PL_stack_sp);
3624 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3629 Perl_my_exit(pTHX_ U32 status)
3633 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3634 thr, (unsigned long) status));
3643 STATUS_NATIVE_SET(status);
3650 Perl_my_failure_exit(pTHX)
3653 if (vaxc$errno & 1) {
3654 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3655 STATUS_NATIVE_SET(44);
3658 if (!vaxc$errno && errno) /* unlikely */
3659 STATUS_NATIVE_SET(44);
3661 STATUS_NATIVE_SET(vaxc$errno);
3666 STATUS_POSIX_SET(errno);
3668 exitstatus = STATUS_POSIX >> 8;
3669 if (exitstatus & 255)
3670 STATUS_POSIX_SET(exitstatus);
3672 STATUS_POSIX_SET(255);
3679 S_my_exit_jump(pTHX)
3682 register PERL_CONTEXT *cx;
3687 SvREFCNT_dec(PL_e_script);
3688 PL_e_script = Nullsv;
3691 POPSTACK_TO(PL_mainstack);
3692 if (cxstack_ix >= 0) {
3695 POPBLOCK(cx,PL_curpm);
3707 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3710 p = SvPVX(PL_e_script);
3711 nl = strchr(p, '\n');
3712 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3714 filter_del(read_e_script);
3717 sv_catpvn(buf_sv, p, nl-p);
3718 sv_chop(PL_e_script, nl);