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);
183 MUTEX_INIT(&PL_sv_lock_mutex);
184 MUTEX_INIT(&PL_fdpid_mutex);
186 thr = init_main_thread();
187 #endif /* USE_THREADS */
189 #ifdef PERL_FLEXIBLE_EXCEPTIONS
190 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
193 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
195 PL_linestr = NEWSV(65,79);
196 sv_upgrade(PL_linestr,SVt_PVIV);
198 if (!SvREADONLY(&PL_sv_undef)) {
199 /* set read-only and try to insure than we wont see REFCNT==0
202 SvREADONLY_on(&PL_sv_undef);
203 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
205 sv_setpv(&PL_sv_no,PL_No);
207 SvREADONLY_on(&PL_sv_no);
208 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
210 sv_setpv(&PL_sv_yes,PL_Yes);
212 SvREADONLY_on(&PL_sv_yes);
213 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
218 /* PL_sighandlerp = sighandler; */
220 PL_sighandlerp = Perl_sighandler;
222 PL_pidstatus = newHV();
226 * There is no way we can refer to them from Perl so close them to save
227 * space. The other alternative would be to provide STDAUX and STDPRN
230 (void)fclose(stdaux);
231 (void)fclose(stdprn);
235 PL_nrs = newSVpvn("\n", 1);
236 PL_rs = SvREFCNT_inc(PL_nrs);
241 PL_lex_state = LEX_NOTPARSING;
247 SET_NUMERIC_STANDARD();
251 PL_patchlevel = NEWSV(0,4);
252 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
253 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
254 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
255 s = (U8*)SvPVX(PL_patchlevel);
256 s = uv_to_utf8(s, (UV)PERL_REVISION);
257 s = uv_to_utf8(s, (UV)PERL_VERSION);
258 s = uv_to_utf8(s, (UV)PERL_SUBVERSION);
260 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
261 SvPOK_on(PL_patchlevel);
262 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
263 + ((NV)PERL_VERSION / (NV)1000)
264 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
265 + ((NV)PERL_SUBVERSION / (NV)1000000)
268 SvNOK_on(PL_patchlevel); /* dual valued */
269 SvUTF8_on(PL_patchlevel);
270 SvREADONLY_on(PL_patchlevel);
273 #if defined(LOCAL_PATCH_COUNT)
274 PL_localpatches = local_patches; /* For possible -v */
277 #ifdef HAVE_INTERP_INTERN
281 PerlIO_init(); /* Hook to IO system */
283 PL_fdpid = newAV(); /* for remembering popen pids by fd */
284 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
285 PL_errors = newSVpvn("",0);
291 =for apidoc perl_destruct
293 Shuts down a Perl interpreter. See L<perlembed>.
302 int destruct_level; /* 0=none, 1=full, 2=full with checks */
308 #endif /* USE_THREADS */
310 /* wait for all pseudo-forked children to finish */
311 PERL_WAIT_FOR_CHILDREN;
315 /* Pass 1 on any remaining threads: detach joinables, join zombies */
317 MUTEX_LOCK(&PL_threads_mutex);
318 DEBUG_S(PerlIO_printf(Perl_debug_log,
319 "perl_destruct: waiting for %d threads...\n",
321 for (t = thr->next; t != thr; t = t->next) {
322 MUTEX_LOCK(&t->mutex);
323 switch (ThrSTATE(t)) {
326 DEBUG_S(PerlIO_printf(Perl_debug_log,
327 "perl_destruct: joining zombie %p\n", t));
328 ThrSETSTATE(t, THRf_DEAD);
329 MUTEX_UNLOCK(&t->mutex);
332 * The SvREFCNT_dec below may take a long time (e.g. av
333 * may contain an object scalar whose destructor gets
334 * called) so we have to unlock threads_mutex and start
337 MUTEX_UNLOCK(&PL_threads_mutex);
339 SvREFCNT_dec((SV*)av);
340 DEBUG_S(PerlIO_printf(Perl_debug_log,
341 "perl_destruct: joined zombie %p OK\n", t));
343 case THRf_R_JOINABLE:
344 DEBUG_S(PerlIO_printf(Perl_debug_log,
345 "perl_destruct: detaching thread %p\n", t));
346 ThrSETSTATE(t, THRf_R_DETACHED);
348 * We unlock threads_mutex and t->mutex in the opposite order
349 * from which we locked them just so that DETACH won't
350 * deadlock if it panics. It's only a breach of good style
351 * not a bug since they are unlocks not locks.
353 MUTEX_UNLOCK(&PL_threads_mutex);
355 MUTEX_UNLOCK(&t->mutex);
358 DEBUG_S(PerlIO_printf(Perl_debug_log,
359 "perl_destruct: ignoring %p (state %u)\n",
361 MUTEX_UNLOCK(&t->mutex);
362 /* fall through and out */
365 /* We leave the above "Pass 1" loop with threads_mutex still locked */
367 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
368 while (PL_nthreads > 1)
370 DEBUG_S(PerlIO_printf(Perl_debug_log,
371 "perl_destruct: final wait for %d threads\n",
373 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
375 /* At this point, we're the last thread */
376 MUTEX_UNLOCK(&PL_threads_mutex);
377 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
378 MUTEX_DESTROY(&PL_threads_mutex);
379 COND_DESTROY(&PL_nthreads_cond);
380 #endif /* !defined(FAKE_THREADS) */
381 #endif /* USE_THREADS */
383 destruct_level = PL_perl_destruct_level;
387 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
389 if (destruct_level < i)
398 /* We must account for everything. */
400 /* Destroy the main CV and syntax tree */
402 PL_curpad = AvARRAY(PL_comppad);
403 op_free(PL_main_root);
404 PL_main_root = Nullop;
406 PL_curcop = &PL_compiling;
407 PL_main_start = Nullop;
408 SvREFCNT_dec(PL_main_cv);
412 if (PL_sv_objcount) {
414 * Try to destruct global references. We do this first so that the
415 * destructors and destructees still exist. Some sv's might remain.
416 * Non-referenced objects are on their own.
421 /* unhook hooks which will soon be, or use, destroyed data */
422 SvREFCNT_dec(PL_warnhook);
423 PL_warnhook = Nullsv;
424 SvREFCNT_dec(PL_diehook);
427 /* call exit list functions */
428 while (PL_exitlistlen-- > 0)
429 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
431 Safefree(PL_exitlist);
433 if (destruct_level == 0){
435 DEBUG_P(debprofdump());
437 /* The exit() function will do everything that needs doing. */
441 /* loosen bonds of global variables */
444 (void)PerlIO_close(PL_rsfp);
448 /* Filters for program text */
449 SvREFCNT_dec(PL_rsfp_filters);
450 PL_rsfp_filters = Nullav;
453 PL_preprocess = FALSE;
459 PL_doswitches = FALSE;
460 PL_dowarn = G_WARN_OFF;
461 PL_doextract = FALSE;
462 PL_sawampersand = FALSE; /* must save all match strings */
465 Safefree(PL_inplace);
467 SvREFCNT_dec(PL_patchlevel);
470 SvREFCNT_dec(PL_e_script);
471 PL_e_script = Nullsv;
474 /* magical thingies */
476 Safefree(PL_ofs); /* $, */
479 Safefree(PL_ors); /* $\ */
482 SvREFCNT_dec(PL_rs); /* $/ */
485 SvREFCNT_dec(PL_nrs); /* $/ helper */
488 PL_multiline = 0; /* $* */
489 Safefree(PL_osname); /* $^O */
492 SvREFCNT_dec(PL_statname);
493 PL_statname = Nullsv;
496 /* defgv, aka *_ should be taken care of elsewhere */
498 /* clean up after study() */
499 SvREFCNT_dec(PL_lastscream);
500 PL_lastscream = Nullsv;
501 Safefree(PL_screamfirst);
503 Safefree(PL_screamnext);
507 Safefree(PL_efloatbuf);
508 PL_efloatbuf = Nullch;
511 /* startup and shutdown function lists */
512 SvREFCNT_dec(PL_beginav);
513 SvREFCNT_dec(PL_endav);
514 SvREFCNT_dec(PL_checkav);
515 SvREFCNT_dec(PL_initav);
521 /* shortcuts just get cleared */
527 PL_argvoutgv = Nullgv;
529 PL_stderrgv = Nullgv;
530 PL_last_in_gv = Nullgv;
532 PL_debstash = Nullhv;
534 /* reset so print() ends up where we expect */
537 SvREFCNT_dec(PL_argvout_stack);
538 PL_argvout_stack = Nullav;
540 SvREFCNT_dec(PL_modglobal);
541 PL_modglobal = Nullhv;
542 SvREFCNT_dec(PL_preambleav);
543 PL_preambleav = Nullav;
544 SvREFCNT_dec(PL_subname);
546 SvREFCNT_dec(PL_linestr);
548 SvREFCNT_dec(PL_pidstatus);
549 PL_pidstatus = Nullhv;
550 SvREFCNT_dec(PL_toptarget);
551 PL_toptarget = Nullsv;
552 SvREFCNT_dec(PL_bodytarget);
553 PL_bodytarget = Nullsv;
554 PL_formtarget = Nullsv;
556 /* free locale stuff */
557 #ifdef USE_LOCALE_COLLATE
558 Safefree(PL_collation_name);
559 PL_collation_name = Nullch;
562 #ifdef USE_LOCALE_NUMERIC
563 Safefree(PL_numeric_name);
564 PL_numeric_name = Nullch;
567 /* clear utf8 character classes */
568 SvREFCNT_dec(PL_utf8_alnum);
569 SvREFCNT_dec(PL_utf8_alnumc);
570 SvREFCNT_dec(PL_utf8_ascii);
571 SvREFCNT_dec(PL_utf8_alpha);
572 SvREFCNT_dec(PL_utf8_space);
573 SvREFCNT_dec(PL_utf8_cntrl);
574 SvREFCNT_dec(PL_utf8_graph);
575 SvREFCNT_dec(PL_utf8_digit);
576 SvREFCNT_dec(PL_utf8_upper);
577 SvREFCNT_dec(PL_utf8_lower);
578 SvREFCNT_dec(PL_utf8_print);
579 SvREFCNT_dec(PL_utf8_punct);
580 SvREFCNT_dec(PL_utf8_xdigit);
581 SvREFCNT_dec(PL_utf8_mark);
582 SvREFCNT_dec(PL_utf8_toupper);
583 SvREFCNT_dec(PL_utf8_tolower);
584 PL_utf8_alnum = Nullsv;
585 PL_utf8_alnumc = Nullsv;
586 PL_utf8_ascii = Nullsv;
587 PL_utf8_alpha = Nullsv;
588 PL_utf8_space = Nullsv;
589 PL_utf8_cntrl = Nullsv;
590 PL_utf8_graph = Nullsv;
591 PL_utf8_digit = Nullsv;
592 PL_utf8_upper = Nullsv;
593 PL_utf8_lower = Nullsv;
594 PL_utf8_print = Nullsv;
595 PL_utf8_punct = Nullsv;
596 PL_utf8_xdigit = Nullsv;
597 PL_utf8_mark = Nullsv;
598 PL_utf8_toupper = Nullsv;
599 PL_utf8_totitle = Nullsv;
600 PL_utf8_tolower = Nullsv;
602 if (!specialWARN(PL_compiling.cop_warnings))
603 SvREFCNT_dec(PL_compiling.cop_warnings);
604 PL_compiling.cop_warnings = Nullsv;
606 Safefree(CopFILE(&PL_compiling));
607 CopFILE(&PL_compiling) = Nullch;
608 Safefree(CopSTASHPV(&PL_compiling));
610 SvREFCNT_dec(CopFILEGV(&PL_compiling));
611 CopFILEGV(&PL_compiling) = Nullgv;
612 /* cop_stash is not refcounted */
615 /* Prepare to destruct main symbol table. */
620 SvREFCNT_dec(PL_curstname);
621 PL_curstname = Nullsv;
623 /* clear queued errors */
624 SvREFCNT_dec(PL_errors);
628 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
629 if (PL_scopestack_ix != 0)
630 Perl_warner(aTHX_ WARN_INTERNAL,
631 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
632 (long)PL_scopestack_ix);
633 if (PL_savestack_ix != 0)
634 Perl_warner(aTHX_ WARN_INTERNAL,
635 "Unbalanced saves: %ld more saves than restores\n",
636 (long)PL_savestack_ix);
637 if (PL_tmps_floor != -1)
638 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
639 (long)PL_tmps_floor + 1);
640 if (cxstack_ix != -1)
641 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
642 (long)cxstack_ix + 1);
645 /* Now absolutely destruct everything, somehow or other, loops or no. */
647 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
648 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
649 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
650 last_sv_count = PL_sv_count;
653 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
654 SvFLAGS(PL_fdpid) |= SVt_PVAV;
655 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
656 SvFLAGS(PL_strtab) |= SVt_PVHV;
658 AvREAL_off(PL_fdpid); /* no surviving entries */
659 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
662 #ifdef HAVE_INTERP_INTERN
666 /* Destruct the global string table. */
668 /* Yell and reset the HeVAL() slots that are still holding refcounts,
669 * so that sv_free() won't fail on them.
677 max = HvMAX(PL_strtab);
678 array = HvARRAY(PL_strtab);
681 if (hent && ckWARN_d(WARN_INTERNAL)) {
682 Perl_warner(aTHX_ WARN_INTERNAL,
683 "Unbalanced string table refcount: (%d) for \"%s\"",
684 HeVAL(hent) - Nullsv, HeKEY(hent));
685 HeVAL(hent) = Nullsv;
695 SvREFCNT_dec(PL_strtab);
697 /* free special SVs */
699 SvREFCNT(&PL_sv_yes) = 0;
700 sv_clear(&PL_sv_yes);
701 SvANY(&PL_sv_yes) = NULL;
702 SvFLAGS(&PL_sv_yes) = 0;
704 SvREFCNT(&PL_sv_no) = 0;
706 SvANY(&PL_sv_no) = NULL;
707 SvFLAGS(&PL_sv_no) = 0;
709 SvREFCNT(&PL_sv_undef) = 0;
710 SvREADONLY_off(&PL_sv_undef);
712 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
713 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
715 Safefree(PL_origfilename);
716 Safefree(PL_reg_start_tmp);
718 Safefree(PL_reg_curpm);
719 Safefree(PL_reg_poscache);
720 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
721 Safefree(PL_op_mask);
722 Safefree(PL_psig_ptr);
723 Safefree(PL_psig_name);
725 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
727 DEBUG_P(debprofdump());
729 MUTEX_DESTROY(&PL_strtab_mutex);
730 MUTEX_DESTROY(&PL_sv_mutex);
731 MUTEX_DESTROY(&PL_eval_mutex);
732 MUTEX_DESTROY(&PL_cred_mutex);
733 MUTEX_DESTROY(&PL_fdpid_mutex);
734 COND_DESTROY(&PL_eval_cond);
735 #ifdef EMULATE_ATOMIC_REFCOUNTS
736 MUTEX_DESTROY(&PL_svref_mutex);
737 #endif /* EMULATE_ATOMIC_REFCOUNTS */
739 /* As the penultimate thing, free the non-arena SV for thrsv */
740 Safefree(SvPVX(PL_thrsv));
741 Safefree(SvANY(PL_thrsv));
744 #endif /* USE_THREADS */
748 /* As the absolutely last thing, free the non-arena SV for mess() */
751 /* it could have accumulated taint magic */
752 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
755 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
756 moremagic = mg->mg_moremagic;
757 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
758 Safefree(mg->mg_ptr);
762 /* we know that type >= SVt_PV */
763 (void)SvOOK_off(PL_mess_sv);
764 Safefree(SvPVX(PL_mess_sv));
765 Safefree(SvANY(PL_mess_sv));
766 Safefree(PL_mess_sv);
772 =for apidoc perl_free
774 Releases a Perl interpreter. See L<perlembed>.
782 #if defined(PERL_OBJECT)
785 # if defined(PERL_IMPLICIT_SYS) && defined(WIN32)
786 void *host = w32_internal_host;
788 win32_delete_internal_host(host);
796 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
798 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
799 PL_exitlist[PL_exitlistlen].fn = fn;
800 PL_exitlist[PL_exitlistlen].ptr = ptr;
805 =for apidoc perl_parse
807 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
813 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
823 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
826 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
827 setuid perl scripts securely.\n");
831 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
832 _dyld_lookup_and_bind
833 ("__environ", (unsigned long *) &environ_pointer, NULL);
838 #ifndef VMS /* VMS doesn't have environ array */
839 PL_origenviron = environ;
844 /* Come here if running an undumped a.out. */
846 PL_origfilename = savepv(argv[0]);
847 PL_do_undump = FALSE;
848 cxstack_ix = -1; /* start label stack again */
850 init_postdump_symbols(argc,argv,env);
855 PL_curpad = AvARRAY(PL_comppad);
856 op_free(PL_main_root);
857 PL_main_root = Nullop;
859 PL_main_start = Nullop;
860 SvREFCNT_dec(PL_main_cv);
864 oldscope = PL_scopestack_ix;
865 PL_dowarn = G_WARN_OFF;
867 #ifdef PERL_FLEXIBLE_EXCEPTIONS
868 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
874 #ifndef PERL_FLEXIBLE_EXCEPTIONS
875 parse_body(env,xsinit);
878 call_list(oldscope, PL_checkav);
885 /* my_exit() was called */
886 while (PL_scopestack_ix > oldscope)
889 PL_curstash = PL_defstash;
891 call_list(oldscope, PL_checkav);
892 ret = STATUS_NATIVE_EXPORT;
895 PerlIO_printf(Perl_error_log, "panic: top_env\n");
903 #ifdef PERL_FLEXIBLE_EXCEPTIONS
905 S_vparse_body(pTHX_ va_list args)
907 char **env = va_arg(args, char**);
908 XSINIT_t xsinit = va_arg(args, XSINIT_t);
910 return parse_body(env, xsinit);
915 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
918 int argc = PL_origargc;
919 char **argv = PL_origargv;
920 char *scriptname = NULL;
922 VOL bool dosearch = FALSE;
927 char *cddir = Nullch;
929 sv_setpvn(PL_linestr,"",0);
930 sv = newSVpvn("",0); /* first used for -I flags */
934 for (argc--,argv++; argc > 0; argc--,argv++) {
935 if (argv[0][0] != '-' || !argv[0][1])
939 validarg = " PHOOEY ";
948 win32_argv2utf8(argc-1, argv+1);
951 #ifndef PERL_STRICT_CR
975 if ((s = moreswitches(s)))
985 #ifdef MACOS_TRADITIONAL
986 /* ignore -e for Dev:Pseudo argument */
987 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
990 if (PL_euid != PL_uid || PL_egid != PL_gid)
991 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
993 PL_e_script = newSVpvn("",0);
994 filter_add(read_e_script, NULL);
997 sv_catpv(PL_e_script, s);
999 sv_catpv(PL_e_script, argv[1]);
1003 Perl_croak(aTHX_ "No code specified for -e");
1004 sv_catpv(PL_e_script, "\n");
1007 case 'I': /* -I handled both here and in moreswitches() */
1009 if (!*++s && (s=argv[1]) != Nullch) {
1014 STRLEN len = strlen(s);
1015 p = savepvn(s, len);
1016 incpush(p, TRUE, TRUE);
1017 sv_catpvn(sv, "-I", 2);
1018 sv_catpvn(sv, p, len);
1019 sv_catpvn(sv, " ", 1);
1023 Perl_croak(aTHX_ "No directory specified for -I");
1027 PL_preprocess = TRUE;
1037 PL_preambleav = newAV();
1038 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1040 PL_Sv = newSVpv("print myconfig();",0);
1042 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1044 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1046 sv_catpv(PL_Sv,"\" Compile-time options:");
1048 sv_catpv(PL_Sv," DEBUGGING");
1050 # ifdef MULTIPLICITY
1051 sv_catpv(PL_Sv," MULTIPLICITY");
1054 sv_catpv(PL_Sv," USE_THREADS");
1056 # ifdef USE_ITHREADS
1057 sv_catpv(PL_Sv," USE_ITHREADS");
1059 # ifdef USE_64_BIT_INT
1060 sv_catpv(PL_Sv," USE_64_BIT_INT");
1062 # ifdef USE_64_BIT_ALL
1063 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1065 # ifdef USE_LONG_DOUBLE
1066 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1068 # ifdef USE_LARGE_FILES
1069 sv_catpv(PL_Sv," USE_LARGE_FILES");
1072 sv_catpv(PL_Sv," USE_SOCKS");
1075 sv_catpv(PL_Sv," PERL_OBJECT");
1077 # ifdef PERL_IMPLICIT_CONTEXT
1078 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1080 # ifdef PERL_IMPLICIT_SYS
1081 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1083 sv_catpv(PL_Sv,"\\n\",");
1085 #if defined(LOCAL_PATCH_COUNT)
1086 if (LOCAL_PATCH_COUNT > 0) {
1088 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1089 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1090 if (PL_localpatches[i])
1091 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1095 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1098 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1100 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1103 sv_catpv(PL_Sv, "; \
1105 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1106 print \" \\%ENV:\\n @env\\n\" if @env; \
1107 print \" \\@INC:\\n @INC\\n\";");
1110 PL_Sv = newSVpv("config_vars(qw(",0);
1111 sv_catpv(PL_Sv, ++s);
1112 sv_catpv(PL_Sv, "))");
1115 av_push(PL_preambleav, PL_Sv);
1116 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1119 PL_doextract = TRUE;
1127 if (!*++s || isSPACE(*s)) {
1131 /* catch use of gnu style long options */
1132 if (strEQ(s, "version")) {
1136 if (strEQ(s, "help")) {
1143 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1149 #ifndef SECURE_INTERNAL_GETENV
1152 (s = PerlEnv_getenv("PERL5OPT")))
1156 if (*s == '-' && *(s+1) == 'T')
1169 if (!strchr("DIMUdmw", *s))
1170 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1171 s = moreswitches(s);
1177 scriptname = argv[0];
1180 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1182 else if (scriptname == Nullch) {
1184 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1192 open_script(scriptname,dosearch,sv,&fdscript);
1194 validate_suid(validarg, scriptname,fdscript);
1197 #if defined(SIGCHLD) || defined(SIGCLD)
1200 # define SIGCHLD SIGCLD
1202 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1203 if (sigstate == SIG_IGN) {
1204 if (ckWARN(WARN_SIGNAL))
1205 Perl_warner(aTHX_ WARN_SIGNAL,
1206 "Can't ignore signal CHLD, forcing to default");
1207 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1213 #ifdef MACOS_TRADITIONAL
1214 if (PL_doextract || gMacPerl_AlwaysExtract) {
1219 if (cddir && PerlDir_chdir(cddir) < 0)
1220 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1224 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1225 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1226 CvUNIQUE_on(PL_compcv);
1228 PL_comppad = newAV();
1229 av_push(PL_comppad, Nullsv);
1230 PL_curpad = AvARRAY(PL_comppad);
1231 PL_comppad_name = newAV();
1232 PL_comppad_name_fill = 0;
1233 PL_min_intro_pending = 0;
1236 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1237 PL_curpad[0] = (SV*)newAV();
1238 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1239 CvOWNER(PL_compcv) = 0;
1240 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1241 MUTEX_INIT(CvMUTEXP(PL_compcv));
1242 #endif /* USE_THREADS */
1244 comppadlist = newAV();
1245 AvREAL_off(comppadlist);
1246 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1247 av_store(comppadlist, 1, (SV*)PL_comppad);
1248 CvPADLIST(PL_compcv) = comppadlist;
1250 boot_core_UNIVERSAL();
1252 boot_core_xsutils();
1256 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1258 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__)
1264 # ifdef HAS_SOCKS5_INIT
1265 socks5_init(argv[0]);
1271 init_predump_symbols();
1272 /* init_postdump_symbols not currently designed to be called */
1273 /* more than once (ENV isn't cleared first, for example) */
1274 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1276 init_postdump_symbols(argc,argv,env);
1280 /* now parse the script */
1282 SETERRNO(0,SS$_NORMAL);
1284 #ifdef MACOS_TRADITIONAL
1285 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1287 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1289 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1290 MacPerl_MPWFileName(PL_origfilename));
1294 if (yyparse() || PL_error_count) {
1296 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1298 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1303 CopLINE_set(PL_curcop, 0);
1304 PL_curstash = PL_defstash;
1305 PL_preprocess = FALSE;
1307 SvREFCNT_dec(PL_e_script);
1308 PL_e_script = Nullsv;
1311 /* now that script is parsed, we can modify record separator */
1312 SvREFCNT_dec(PL_rs);
1313 PL_rs = SvREFCNT_inc(PL_nrs);
1314 sv_setsv(get_sv("/", TRUE), PL_rs);
1319 SAVECOPFILE(PL_curcop);
1320 SAVECOPLINE(PL_curcop);
1321 gv_check(PL_defstash);
1328 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1329 dump_mstats("after compilation:");
1338 =for apidoc perl_run
1340 Tells a Perl interpreter to run. See L<perlembed>.
1356 oldscope = PL_scopestack_ix;
1358 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1360 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1366 cxstack_ix = -1; /* start context stack again */
1368 case 0: /* normal completion */
1369 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1374 case 2: /* my_exit() */
1375 while (PL_scopestack_ix > oldscope)
1378 PL_curstash = PL_defstash;
1379 if (PL_endav && !PL_minus_c)
1380 call_list(oldscope, PL_endav);
1382 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1383 dump_mstats("after execution: ");
1385 ret = STATUS_NATIVE_EXPORT;
1389 POPSTACK_TO(PL_mainstack);
1392 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1402 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1404 S_vrun_body(pTHX_ va_list args)
1406 I32 oldscope = va_arg(args, I32);
1408 return run_body(oldscope);
1414 S_run_body(pTHX_ I32 oldscope)
1418 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1419 PL_sawampersand ? "Enabling" : "Omitting"));
1421 if (!PL_restartop) {
1422 DEBUG_x(dump_all());
1423 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1424 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1428 #ifdef MACOS_TRADITIONAL
1429 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1431 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1435 if (PERLDB_SINGLE && PL_DBsingle)
1436 sv_setiv(PL_DBsingle, 1);
1438 call_list(oldscope, PL_initav);
1444 PL_op = PL_restartop;
1448 else if (PL_main_start) {
1449 CvDEPTH(PL_main_cv) = 1;
1450 PL_op = PL_main_start;
1460 =for apidoc p||get_sv
1462 Returns the SV of the specified Perl scalar. If C<create> is set and the
1463 Perl variable does not exist then it will be created. If C<create> is not
1464 set and the variable does not exist then NULL is returned.
1470 Perl_get_sv(pTHX_ const char *name, I32 create)
1474 if (name[1] == '\0' && !isALPHA(name[0])) {
1475 PADOFFSET tmp = find_threadsv(name);
1476 if (tmp != NOT_IN_PAD) {
1478 return THREADSV(tmp);
1481 #endif /* USE_THREADS */
1482 gv = gv_fetchpv(name, create, SVt_PV);
1489 =for apidoc p||get_av
1491 Returns the AV of the specified Perl array. If C<create> is set and the
1492 Perl variable does not exist then it will be created. If C<create> is not
1493 set and the variable does not exist then NULL is returned.
1499 Perl_get_av(pTHX_ const char *name, I32 create)
1501 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1510 =for apidoc p||get_hv
1512 Returns the HV of the specified Perl hash. If C<create> is set and the
1513 Perl variable does not exist then it will be created. If C<create> is not
1514 set and the variable does not exist then NULL is returned.
1520 Perl_get_hv(pTHX_ const char *name, I32 create)
1522 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1531 =for apidoc p||get_cv
1533 Returns the CV of the specified Perl subroutine. If C<create> is set and
1534 the Perl subroutine does not exist then it will be declared (which has the
1535 same effect as saying C<sub name;>). If C<create> is not set and the
1536 subroutine does not exist then NULL is returned.
1542 Perl_get_cv(pTHX_ const char *name, I32 create)
1544 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1545 /* XXX unsafe for threads if eval_owner isn't held */
1546 /* XXX this is probably not what they think they're getting.
1547 * It has the same effect as "sub name;", i.e. just a forward
1549 if (create && !GvCVu(gv))
1550 return newSUB(start_subparse(FALSE, 0),
1551 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1559 /* Be sure to refetch the stack pointer after calling these routines. */
1562 =for apidoc p||call_argv
1564 Performs a callback to the specified Perl sub. See L<perlcall>.
1570 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1572 /* See G_* flags in cop.h */
1573 /* null terminated arg list */
1580 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1585 return call_pv(sub_name, flags);
1589 =for apidoc p||call_pv
1591 Performs a callback to the specified Perl sub. See L<perlcall>.
1597 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1598 /* name of the subroutine */
1599 /* See G_* flags in cop.h */
1601 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1605 =for apidoc p||call_method
1607 Performs a callback to the specified Perl method. The blessed object must
1608 be on the stack. See L<perlcall>.
1614 Perl_call_method(pTHX_ const char *methname, I32 flags)
1615 /* name of the subroutine */
1616 /* See G_* flags in cop.h */
1618 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1621 /* May be called with any of a CV, a GV, or an SV containing the name. */
1623 =for apidoc p||call_sv
1625 Performs a callback to the Perl sub whose name is in the SV. See
1632 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1633 /* See G_* flags in cop.h */
1636 LOGOP myop; /* fake syntax tree node */
1641 bool oldcatch = CATCH_GET;
1646 if (flags & G_DISCARD) {
1651 Zero(&myop, 1, LOGOP);
1652 myop.op_next = Nullop;
1653 if (!(flags & G_NOARGS))
1654 myop.op_flags |= OPf_STACKED;
1655 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1656 (flags & G_ARRAY) ? OPf_WANT_LIST :
1661 EXTEND(PL_stack_sp, 1);
1662 *++PL_stack_sp = sv;
1664 oldscope = PL_scopestack_ix;
1666 if (PERLDB_SUB && PL_curstash != PL_debstash
1667 /* Handle first BEGIN of -d. */
1668 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1669 /* Try harder, since this may have been a sighandler, thus
1670 * curstash may be meaningless. */
1671 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1672 && !(flags & G_NODEBUG))
1673 PL_op->op_private |= OPpENTERSUB_DB;
1675 if (flags & G_METHOD) {
1676 Zero(&method_op, 1, UNOP);
1677 method_op.op_next = PL_op;
1678 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1679 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1680 PL_op = (OP*)&method_op;
1683 if (!(flags & G_EVAL)) {
1685 call_body((OP*)&myop, FALSE);
1686 retval = PL_stack_sp - (PL_stack_base + oldmark);
1687 CATCH_SET(oldcatch);
1690 myop.op_other = (OP*)&myop;
1692 /* we're trying to emulate pp_entertry() here */
1694 register PERL_CONTEXT *cx;
1695 I32 gimme = GIMME_V;
1700 push_return(Nullop);
1701 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1703 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1705 PL_in_eval = EVAL_INEVAL;
1706 if (flags & G_KEEPERR)
1707 PL_in_eval |= EVAL_KEEPERR;
1713 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1715 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1722 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1724 call_body((OP*)&myop, FALSE);
1726 retval = PL_stack_sp - (PL_stack_base + oldmark);
1727 if (!(flags & G_KEEPERR))
1734 /* my_exit() was called */
1735 PL_curstash = PL_defstash;
1738 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1739 Perl_croak(aTHX_ "Callback called exit");
1744 PL_op = PL_restartop;
1748 PL_stack_sp = PL_stack_base + oldmark;
1749 if (flags & G_ARRAY)
1753 *++PL_stack_sp = &PL_sv_undef;
1758 if (PL_scopestack_ix > oldscope) {
1762 register PERL_CONTEXT *cx;
1774 if (flags & G_DISCARD) {
1775 PL_stack_sp = PL_stack_base + oldmark;
1784 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1786 S_vcall_body(pTHX_ va_list args)
1788 OP *myop = va_arg(args, OP*);
1789 int is_eval = va_arg(args, int);
1791 call_body(myop, is_eval);
1797 S_call_body(pTHX_ OP *myop, int is_eval)
1801 if (PL_op == myop) {
1803 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1805 PL_op = Perl_pp_entersub(aTHX); /* this does */
1811 /* Eval a string. The G_EVAL flag is always assumed. */
1814 =for apidoc p||eval_sv
1816 Tells Perl to C<eval> the string in the SV.
1822 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1824 /* See G_* flags in cop.h */
1827 UNOP myop; /* fake syntax tree node */
1828 I32 oldmark = SP - PL_stack_base;
1835 if (flags & G_DISCARD) {
1842 Zero(PL_op, 1, UNOP);
1843 EXTEND(PL_stack_sp, 1);
1844 *++PL_stack_sp = sv;
1845 oldscope = PL_scopestack_ix;
1847 if (!(flags & G_NOARGS))
1848 myop.op_flags = OPf_STACKED;
1849 myop.op_next = Nullop;
1850 myop.op_type = OP_ENTEREVAL;
1851 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1852 (flags & G_ARRAY) ? OPf_WANT_LIST :
1854 if (flags & G_KEEPERR)
1855 myop.op_flags |= OPf_SPECIAL;
1857 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1859 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1866 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1868 call_body((OP*)&myop,TRUE);
1870 retval = PL_stack_sp - (PL_stack_base + oldmark);
1871 if (!(flags & G_KEEPERR))
1878 /* my_exit() was called */
1879 PL_curstash = PL_defstash;
1882 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1883 Perl_croak(aTHX_ "Callback called exit");
1888 PL_op = PL_restartop;
1892 PL_stack_sp = PL_stack_base + oldmark;
1893 if (flags & G_ARRAY)
1897 *++PL_stack_sp = &PL_sv_undef;
1903 if (flags & G_DISCARD) {
1904 PL_stack_sp = PL_stack_base + oldmark;
1914 =for apidoc p||eval_pv
1916 Tells Perl to C<eval> the given string and return an SV* result.
1922 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1925 SV* sv = newSVpv(p, 0);
1927 eval_sv(sv, G_SCALAR);
1934 if (croak_on_error && SvTRUE(ERRSV)) {
1936 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1942 /* Require a module. */
1945 =for apidoc p||require_pv
1947 Tells Perl to C<require> a module.
1953 Perl_require_pv(pTHX_ const char *pv)
1957 PUSHSTACKi(PERLSI_REQUIRE);
1959 sv = sv_newmortal();
1960 sv_setpv(sv, "require '");
1963 eval_sv(sv, G_DISCARD);
1969 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
1973 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
1974 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1978 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
1980 /* This message really ought to be max 23 lines.
1981 * Removed -h because the user already knows that opton. Others? */
1983 static char *usage_msg[] = {
1984 "-0[octal] specify record separator (\\0, if no argument)",
1985 "-a autosplit mode with -n or -p (splits $_ into @F)",
1986 "-C enable native wide character system interfaces",
1987 "-c check syntax only (runs BEGIN and CHECK blocks)",
1988 "-d[:debugger] run program under debugger",
1989 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1990 "-e 'command' one line of program (several -e's allowed, omit programfile)",
1991 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
1992 "-i[extension] edit <> files in place (makes backup if extension supplied)",
1993 "-Idirectory specify @INC/#include directory (several -I's allowed)",
1994 "-l[octal] enable line ending processing, specifies line terminator",
1995 "-[mM][-]module execute `use/no module...' before executing program",
1996 "-n assume 'while (<>) { ... }' loop around program",
1997 "-p assume loop like -n but print line also, like sed",
1998 "-P run program through C preprocessor before compilation",
1999 "-s enable rudimentary parsing for switches after programfile",
2000 "-S look for programfile using PATH environment variable",
2001 "-T enable tainting checks",
2002 "-u dump core after parsing program",
2003 "-U allow unsafe operations",
2004 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2005 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2006 "-w enable many useful warnings (RECOMMENDED)",
2007 "-W enable all warnings",
2008 "-X disable all warnings",
2009 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2013 char **p = usage_msg;
2015 PerlIO_printf(PerlIO_stdout(),
2016 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2019 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2022 /* This routine handles any switches that can be given during run */
2025 Perl_moreswitches(pTHX_ char *s)
2034 numlen = 0; /* disallow underscores */
2035 rschar = (U32)scan_oct(s, 4, &numlen);
2036 SvREFCNT_dec(PL_nrs);
2037 if (rschar & ~((U8)~0))
2038 PL_nrs = &PL_sv_undef;
2039 else if (!rschar && numlen >= 2)
2040 PL_nrs = newSVpvn("", 0);
2043 PL_nrs = newSVpvn(&ch, 1);
2048 PL_widesyscalls = TRUE;
2053 PL_splitstr = savepv(s + 1);
2067 /* The following permits -d:Mod to accepts arguments following an =
2068 in the fashion that -MSome::Mod does. */
2069 if (*s == ':' || *s == '=') {
2072 sv = newSVpv("use Devel::", 0);
2074 /* We now allow -d:Module=Foo,Bar */
2075 while(isALNUM(*s) || *s==':') ++s;
2077 sv_catpv(sv, start);
2079 sv_catpvn(sv, start, s-start);
2080 sv_catpv(sv, " split(/,/,q{");
2085 my_setenv("PERL5DB", SvPV(sv, PL_na));
2088 PL_perldb = PERLDB_ALL;
2096 if (isALPHA(s[1])) {
2097 static char debopts[] = "psltocPmfrxuLHXDS";
2100 for (s++; *s && (d = strchr(debopts,*s)); s++)
2101 PL_debug |= 1 << (d - debopts);
2104 PL_debug = atoi(s+1);
2105 for (s++; isDIGIT(*s); s++) ;
2107 PL_debug |= 0x80000000;
2110 if (ckWARN_d(WARN_DEBUGGING))
2111 Perl_warner(aTHX_ WARN_DEBUGGING,
2112 "Recompile perl with -DDEBUGGING to use -D switch\n");
2113 for (s++; isALNUM(*s); s++) ;
2119 usage(PL_origargv[0]);
2123 Safefree(PL_inplace);
2124 PL_inplace = savepv(s+1);
2126 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2129 if (*s == '-') /* Additional switches on #! line. */
2133 case 'I': /* -I handled both here and in parse_perl() */
2136 while (*s && isSPACE(*s))
2141 /* ignore trailing spaces (possibly followed by other switches) */
2143 for (e = p; *e && !isSPACE(*e); e++) ;
2147 } while (*p && *p != '-');
2148 e = savepvn(s, e-s);
2149 incpush(e, TRUE, TRUE);
2156 Perl_croak(aTHX_ "No directory specified for -I");
2164 PL_ors = savepv("\n");
2166 numlen = 0; /* disallow underscores */
2167 *PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2172 if (RsPARA(PL_nrs)) {
2177 PL_ors = SvPV(PL_nrs, PL_orslen);
2178 PL_ors = savepvn(PL_ors, PL_orslen);
2182 forbid_setid("-M"); /* XXX ? */
2185 forbid_setid("-m"); /* XXX ? */
2190 /* -M-foo == 'no foo' */
2191 if (*s == '-') { use = "no "; ++s; }
2192 sv = newSVpv(use,0);
2194 /* We allow -M'Module qw(Foo Bar)' */
2195 while(isALNUM(*s) || *s==':') ++s;
2197 sv_catpv(sv, start);
2198 if (*(start-1) == 'm') {
2200 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2201 sv_catpv( sv, " ()");
2205 Perl_croak(aTHX_ "Module name required with -%c option",
2207 sv_catpvn(sv, start, s-start);
2208 sv_catpv(sv, " split(/,/,q{");
2214 PL_preambleav = newAV();
2215 av_push(PL_preambleav, sv);
2218 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2230 PL_doswitches = TRUE;
2235 Perl_croak(aTHX_ "Too late for \"-T\" option");
2239 #ifdef MACOS_TRADITIONAL
2240 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2242 PL_do_undump = TRUE;
2250 PerlIO_printf(PerlIO_stdout(),
2251 Perl_form(aTHX_ "\nThis is perl, v%vd built for %s",
2252 PL_patchlevel, ARCHNAME));
2253 #if defined(LOCAL_PATCH_COUNT)
2254 if (LOCAL_PATCH_COUNT > 0)
2255 PerlIO_printf(PerlIO_stdout(),
2256 "\n(with %d registered patch%s, "
2257 "see perl -V for more detail)",
2258 (int)LOCAL_PATCH_COUNT,
2259 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2262 PerlIO_printf(PerlIO_stdout(),
2263 "\n\nCopyright 1987-2000, Larry Wall\n");
2264 #ifdef MACOS_TRADITIONAL
2265 PerlIO_printf(PerlIO_stdout(),
2266 "\nMacOS port Copyright (c) 1991-2000, Matthias Neeracher\n");
2269 PerlIO_printf(PerlIO_stdout(),
2270 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2273 PerlIO_printf(PerlIO_stdout(),
2274 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2275 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2278 PerlIO_printf(PerlIO_stdout(),
2279 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2280 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2283 PerlIO_printf(PerlIO_stdout(),
2284 "atariST series port, ++jrb bammi@cadence.com\n");
2287 PerlIO_printf(PerlIO_stdout(),
2288 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2291 PerlIO_printf(PerlIO_stdout(),
2292 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
2295 PerlIO_printf(PerlIO_stdout(),
2296 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2299 PerlIO_printf(PerlIO_stdout(),
2300 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2303 PerlIO_printf(PerlIO_stdout(),
2304 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2307 PerlIO_printf(PerlIO_stdout(),
2308 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2311 PerlIO_printf(PerlIO_stdout(),
2312 "MiNT port by Guido Flohr, 1997-1999\n");
2315 PerlIO_printf(PerlIO_stdout(),
2316 "EPOC port by Olaf Flebbe, 1999-2000\n");
2318 #ifdef BINARY_BUILD_NOTICE
2319 BINARY_BUILD_NOTICE;
2321 PerlIO_printf(PerlIO_stdout(),
2323 Perl may be copied only under the terms of either the Artistic License or the\n\
2324 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2325 Complete documentation for Perl, including FAQ lists, should be found on\n\
2326 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2327 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2330 if (! (PL_dowarn & G_WARN_ALL_MASK))
2331 PL_dowarn |= G_WARN_ON;
2335 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2336 PL_compiling.cop_warnings = pWARN_ALL ;
2340 PL_dowarn = G_WARN_ALL_OFF;
2341 PL_compiling.cop_warnings = pWARN_NONE ;
2346 if (s[1] == '-') /* Additional switches on #! line. */
2351 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2357 #ifdef ALTERNATE_SHEBANG
2358 case 'S': /* OS/2 needs -S on "extproc" line. */
2366 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2371 /* compliments of Tom Christiansen */
2373 /* unexec() can be found in the Gnu emacs distribution */
2374 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2377 Perl_my_unexec(pTHX)
2385 prog = newSVpv(BIN_EXP, 0);
2386 sv_catpv(prog, "/perl");
2387 file = newSVpv(PL_origfilename, 0);
2388 sv_catpv(file, ".perldump");
2390 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2391 /* unexec prints msg to stderr in case of failure */
2392 PerlProc_exit(status);
2395 # include <lib$routines.h>
2396 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2398 ABORT(); /* for use with undump */
2403 /* initialize curinterp */
2408 #ifdef PERL_OBJECT /* XXX kludge */
2411 PL_chopset = " \n-"; \
2412 PL_copline = NOLINE; \
2413 PL_curcop = &PL_compiling;\
2414 PL_curcopdb = NULL; \
2416 PL_dumpindent = 4; \
2417 PL_laststatval = -1; \
2418 PL_laststype = OP_STAT; \
2419 PL_maxscream = -1; \
2420 PL_maxsysfd = MAXSYSFD; \
2421 PL_statname = Nullsv; \
2422 PL_tmps_floor = -1; \
2424 PL_op_mask = NULL; \
2425 PL_laststatval = -1; \
2426 PL_laststype = OP_STAT; \
2427 PL_mess_sv = Nullsv; \
2428 PL_splitstr = " "; \
2429 PL_generation = 100; \
2430 PL_exitlist = NULL; \
2431 PL_exitlistlen = 0; \
2433 PL_in_clean_objs = FALSE; \
2434 PL_in_clean_all = FALSE; \
2435 PL_profiledata = NULL; \
2437 PL_rsfp_filters = Nullav; \
2442 # ifdef MULTIPLICITY
2443 # define PERLVAR(var,type)
2444 # define PERLVARA(var,n,type)
2445 # if defined(PERL_IMPLICIT_CONTEXT)
2446 # if defined(USE_THREADS)
2447 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2448 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2449 # else /* !USE_THREADS */
2450 # define PERLVARI(var,type,init) aTHX->var = init;
2451 # define PERLVARIC(var,type,init) aTHX->var = init;
2452 # endif /* USE_THREADS */
2454 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2455 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2457 # include "intrpvar.h"
2458 # ifndef USE_THREADS
2459 # include "thrdvar.h"
2466 # define PERLVAR(var,type)
2467 # define PERLVARA(var,n,type)
2468 # define PERLVARI(var,type,init) PL_##var = init;
2469 # define PERLVARIC(var,type,init) PL_##var = init;
2470 # include "intrpvar.h"
2471 # ifndef USE_THREADS
2472 # include "thrdvar.h"
2484 S_init_main_stash(pTHX)
2489 /* Note that strtab is a rather special HV. Assumptions are made
2490 about not iterating on it, and not adding tie magic to it.
2491 It is properly deallocated in perl_destruct() */
2492 PL_strtab = newHV();
2494 MUTEX_INIT(&PL_strtab_mutex);
2496 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2497 hv_ksplit(PL_strtab, 512);
2499 PL_curstash = PL_defstash = newHV();
2500 PL_curstname = newSVpvn("main",4);
2501 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2502 SvREFCNT_dec(GvHV(gv));
2503 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2505 HvNAME(PL_defstash) = savepv("main");
2506 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2507 GvMULTI_on(PL_incgv);
2508 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2509 GvMULTI_on(PL_hintgv);
2510 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2511 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2512 GvMULTI_on(PL_errgv);
2513 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2514 GvMULTI_on(PL_replgv);
2515 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2516 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2517 sv_setpvn(ERRSV, "", 0);
2518 PL_curstash = PL_defstash;
2519 CopSTASH_set(&PL_compiling, PL_defstash);
2520 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2521 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2522 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2523 /* We must init $/ before switches are processed. */
2524 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2528 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2535 PL_origfilename = savepv("-e");
2538 /* if find_script() returns, it returns a malloc()-ed value */
2539 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2541 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2542 char *s = scriptname + 8;
2543 *fdscript = atoi(s);
2547 scriptname = savepv(s + 1);
2548 Safefree(PL_origfilename);
2549 PL_origfilename = scriptname;
2555 Safefree(CopFILE(PL_curcop));
2557 SvREFCNT_dec(CopFILEGV(PL_curcop));
2559 CopFILE_set(PL_curcop, PL_origfilename);
2560 if (strEQ(PL_origfilename,"-"))
2562 if (*fdscript >= 0) {
2563 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2564 #if defined(HAS_FCNTL) && defined(F_SETFD)
2566 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2569 else if (PL_preprocess) {
2570 char *cpp_cfg = CPPSTDIN;
2571 SV *cpp = newSVpvn("",0);
2572 SV *cmd = NEWSV(0,0);
2574 if (strEQ(cpp_cfg, "cppstdin"))
2575 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2576 sv_catpv(cpp, cpp_cfg);
2578 sv_catpvn(sv, "-I", 2);
2579 sv_catpv(sv,PRIVLIB_EXP);
2581 #if defined(MSDOS) || defined(WIN32)
2582 Perl_sv_setpvf(aTHX_ cmd, "\
2583 sed %s -e \"/^[^#]/b\" \
2584 -e \"/^#[ ]*include[ ]/b\" \
2585 -e \"/^#[ ]*define[ ]/b\" \
2586 -e \"/^#[ ]*if[ ]/b\" \
2587 -e \"/^#[ ]*ifdef[ ]/b\" \
2588 -e \"/^#[ ]*ifndef[ ]/b\" \
2589 -e \"/^#[ ]*else/b\" \
2590 -e \"/^#[ ]*elif[ ]/b\" \
2591 -e \"/^#[ ]*undef[ ]/b\" \
2592 -e \"/^#[ ]*endif/b\" \
2594 %s | %"SVf" -C %"SVf" %s",
2595 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2598 Perl_sv_setpvf(aTHX_ cmd, "\
2599 %s %s -e '/^[^#]/b' \
2600 -e '/^#[ ]*include[ ]/b' \
2601 -e '/^#[ ]*define[ ]/b' \
2602 -e '/^#[ ]*if[ ]/b' \
2603 -e '/^#[ ]*ifdef[ ]/b' \
2604 -e '/^#[ ]*ifndef[ ]/b' \
2605 -e '/^#[ ]*else/b' \
2606 -e '/^#[ ]*elif[ ]/b' \
2607 -e '/^#[ ]*undef[ ]/b' \
2608 -e '/^#[ ]*endif/b' \
2610 %s | %"SVf" %"SVf" %s",
2612 Perl_sv_setpvf(aTHX_ cmd, "\
2613 %s %s -e '/^[^#]/b' \
2614 -e '/^#[ ]*include[ ]/b' \
2615 -e '/^#[ ]*define[ ]/b' \
2616 -e '/^#[ ]*if[ ]/b' \
2617 -e '/^#[ ]*ifdef[ ]/b' \
2618 -e '/^#[ ]*ifndef[ ]/b' \
2619 -e '/^#[ ]*else/b' \
2620 -e '/^#[ ]*elif[ ]/b' \
2621 -e '/^#[ ]*undef[ ]/b' \
2622 -e '/^#[ ]*endif/b' \
2624 %s | %"SVf" -C %"SVf" %s",
2631 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2633 scriptname, cpp, sv, CPPMINUS);
2634 PL_doextract = FALSE;
2635 #ifdef IAMSUID /* actually, this is caught earlier */
2636 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2638 (void)seteuid(PL_uid); /* musn't stay setuid root */
2641 (void)setreuid((Uid_t)-1, PL_uid);
2643 #ifdef HAS_SETRESUID
2644 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2646 PerlProc_setuid(PL_uid);
2650 if (PerlProc_geteuid() != PL_uid)
2651 Perl_croak(aTHX_ "Can't do seteuid!\n");
2653 #endif /* IAMSUID */
2654 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2658 else if (!*scriptname) {
2659 forbid_setid("program input from stdin");
2660 PL_rsfp = PerlIO_stdin();
2663 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2664 #if defined(HAS_FCNTL) && defined(F_SETFD)
2666 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2671 #ifndef IAMSUID /* in case script is not readable before setuid */
2673 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2674 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2677 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2678 (int)PERL_REVISION, (int)PERL_VERSION,
2679 (int)PERL_SUBVERSION), PL_origargv);
2680 Perl_croak(aTHX_ "Can't do setuid\n");
2684 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2685 CopFILE(PL_curcop), Strerror(errno));
2690 * I_SYSSTATVFS HAS_FSTATVFS
2692 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2693 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2694 * here so that metaconfig picks them up. */
2698 S_fd_on_nosuid_fs(pTHX_ int fd)
2700 int check_okay = 0; /* able to do all the required sys/libcalls */
2701 int on_nosuid = 0; /* the fd is on a nosuid fs */
2703 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2704 * fstatvfs() is UNIX98.
2705 * fstatfs() is 4.3 BSD.
2706 * ustat()+getmnt() is pre-4.3 BSD.
2707 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2708 * an irrelevant filesystem while trying to reach the right one.
2711 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2713 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2714 defined(HAS_FSTATVFS)
2715 # define FD_ON_NOSUID_CHECK_OKAY
2716 struct statvfs stfs;
2718 check_okay = fstatvfs(fd, &stfs) == 0;
2719 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2720 # endif /* fstatvfs */
2722 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2723 defined(PERL_MOUNT_NOSUID) && \
2724 defined(HAS_FSTATFS) && \
2725 defined(HAS_STRUCT_STATFS) && \
2726 defined(HAS_STRUCT_STATFS_F_FLAGS)
2727 # define FD_ON_NOSUID_CHECK_OKAY
2730 check_okay = fstatfs(fd, &stfs) == 0;
2731 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2732 # endif /* fstatfs */
2734 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2735 defined(PERL_MOUNT_NOSUID) && \
2736 defined(HAS_FSTAT) && \
2737 defined(HAS_USTAT) && \
2738 defined(HAS_GETMNT) && \
2739 defined(HAS_STRUCT_FS_DATA) && \
2741 # define FD_ON_NOSUID_CHECK_OKAY
2744 if (fstat(fd, &fdst) == 0) {
2746 if (ustat(fdst.st_dev, &us) == 0) {
2748 /* NOSTAT_ONE here because we're not examining fields which
2749 * vary between that case and STAT_ONE. */
2750 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2751 size_t cmplen = sizeof(us.f_fname);
2752 if (sizeof(fsd.fd_req.path) < cmplen)
2753 cmplen = sizeof(fsd.fd_req.path);
2754 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2755 fdst.st_dev == fsd.fd_req.dev) {
2757 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2763 # endif /* fstat+ustat+getmnt */
2765 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2766 defined(HAS_GETMNTENT) && \
2767 defined(HAS_HASMNTOPT) && \
2768 defined(MNTOPT_NOSUID)
2769 # define FD_ON_NOSUID_CHECK_OKAY
2770 FILE *mtab = fopen("/etc/mtab", "r");
2771 struct mntent *entry;
2772 struct stat stb, fsb;
2774 if (mtab && (fstat(fd, &stb) == 0)) {
2775 while (entry = getmntent(mtab)) {
2776 if (stat(entry->mnt_dir, &fsb) == 0
2777 && fsb.st_dev == stb.st_dev)
2779 /* found the filesystem */
2781 if (hasmntopt(entry, MNTOPT_NOSUID))
2784 } /* A single fs may well fail its stat(). */
2789 # endif /* getmntent+hasmntopt */
2792 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2795 #endif /* IAMSUID */
2798 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2804 /* do we need to emulate setuid on scripts? */
2806 /* This code is for those BSD systems that have setuid #! scripts disabled
2807 * in the kernel because of a security problem. Merely defining DOSUID
2808 * in perl will not fix that problem, but if you have disabled setuid
2809 * scripts in the kernel, this will attempt to emulate setuid and setgid
2810 * on scripts that have those now-otherwise-useless bits set. The setuid
2811 * root version must be called suidperl or sperlN.NNN. If regular perl
2812 * discovers that it has opened a setuid script, it calls suidperl with
2813 * the same argv that it had. If suidperl finds that the script it has
2814 * just opened is NOT setuid root, it sets the effective uid back to the
2815 * uid. We don't just make perl setuid root because that loses the
2816 * effective uid we had before invoking perl, if it was different from the
2819 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2820 * be defined in suidperl only. suidperl must be setuid root. The
2821 * Configure script will set this up for you if you want it.
2828 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2829 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2830 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2835 #ifndef HAS_SETREUID
2836 /* On this access check to make sure the directories are readable,
2837 * there is actually a small window that the user could use to make
2838 * filename point to an accessible directory. So there is a faint
2839 * chance that someone could execute a setuid script down in a
2840 * non-accessible directory. I don't know what to do about that.
2841 * But I don't think it's too important. The manual lies when
2842 * it says access() is useful in setuid programs.
2844 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2845 Perl_croak(aTHX_ "Permission denied");
2847 /* If we can swap euid and uid, then we can determine access rights
2848 * with a simple stat of the file, and then compare device and
2849 * inode to make sure we did stat() on the same file we opened.
2850 * Then we just have to make sure he or she can execute it.
2853 struct stat tmpstatbuf;
2857 setreuid(PL_euid,PL_uid) < 0
2860 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2863 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2864 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2865 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2866 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2867 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2868 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2869 Perl_croak(aTHX_ "Permission denied");
2871 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2872 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2873 (void)PerlIO_close(PL_rsfp);
2874 Perl_croak(aTHX_ "Permission denied\n");
2878 setreuid(PL_uid,PL_euid) < 0
2880 # if defined(HAS_SETRESUID)
2881 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2884 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2885 Perl_croak(aTHX_ "Can't reswap uid and euid");
2886 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2887 Perl_croak(aTHX_ "Permission denied\n");
2889 #endif /* HAS_SETREUID */
2890 #endif /* IAMSUID */
2892 if (!S_ISREG(PL_statbuf.st_mode))
2893 Perl_croak(aTHX_ "Permission denied");
2894 if (PL_statbuf.st_mode & S_IWOTH)
2895 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2896 PL_doswitches = FALSE; /* -s is insecure in suid */
2897 CopLINE_inc(PL_curcop);
2898 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2899 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2900 Perl_croak(aTHX_ "No #! line");
2901 s = SvPV(PL_linestr,n_a)+2;
2903 while (!isSPACE(*s)) s++;
2904 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2905 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2906 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2907 Perl_croak(aTHX_ "Not a perl script");
2908 while (*s == ' ' || *s == '\t') s++;
2910 * #! arg must be what we saw above. They can invoke it by
2911 * mentioning suidperl explicitly, but they may not add any strange
2912 * arguments beyond what #! says if they do invoke suidperl that way.
2914 len = strlen(validarg);
2915 if (strEQ(validarg," PHOOEY ") ||
2916 strnNE(s,validarg,len) || !isSPACE(s[len]))
2917 Perl_croak(aTHX_ "Args must match #! line");
2920 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2921 PL_euid == PL_statbuf.st_uid)
2923 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2924 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2925 #endif /* IAMSUID */
2927 if (PL_euid) { /* oops, we're not the setuid root perl */
2928 (void)PerlIO_close(PL_rsfp);
2931 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2932 (int)PERL_REVISION, (int)PERL_VERSION,
2933 (int)PERL_SUBVERSION), PL_origargv);
2935 Perl_croak(aTHX_ "Can't do setuid\n");
2938 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2940 (void)setegid(PL_statbuf.st_gid);
2943 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2945 #ifdef HAS_SETRESGID
2946 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2948 PerlProc_setgid(PL_statbuf.st_gid);
2952 if (PerlProc_getegid() != PL_statbuf.st_gid)
2953 Perl_croak(aTHX_ "Can't do setegid!\n");
2955 if (PL_statbuf.st_mode & S_ISUID) {
2956 if (PL_statbuf.st_uid != PL_euid)
2958 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2961 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2963 #ifdef HAS_SETRESUID
2964 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2966 PerlProc_setuid(PL_statbuf.st_uid);
2970 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2971 Perl_croak(aTHX_ "Can't do seteuid!\n");
2973 else if (PL_uid) { /* oops, mustn't run as root */
2975 (void)seteuid((Uid_t)PL_uid);
2978 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2980 #ifdef HAS_SETRESUID
2981 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2983 PerlProc_setuid((Uid_t)PL_uid);
2987 if (PerlProc_geteuid() != PL_uid)
2988 Perl_croak(aTHX_ "Can't do seteuid!\n");
2991 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2992 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
2995 else if (PL_preprocess)
2996 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
2997 else if (fdscript >= 0)
2998 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3000 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3002 /* We absolutely must clear out any saved ids here, so we */
3003 /* exec the real perl, substituting fd script for scriptname. */
3004 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3005 PerlIO_rewind(PL_rsfp);
3006 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3007 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3008 if (!PL_origargv[which])
3009 Perl_croak(aTHX_ "Permission denied");
3010 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3011 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3012 #if defined(HAS_FCNTL) && defined(F_SETFD)
3013 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3015 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3016 (int)PERL_REVISION, (int)PERL_VERSION,
3017 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3018 Perl_croak(aTHX_ "Can't do setuid\n");
3019 #endif /* IAMSUID */
3021 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3022 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3024 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3025 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3027 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3030 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3031 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3032 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3033 /* not set-id, must be wrapped */
3039 S_find_beginning(pTHX)
3041 register char *s, *s2;
3043 /* skip forward in input to the real script? */
3046 #ifdef MACOS_TRADITIONAL
3047 /* Since the Mac OS does not honor !# arguments for us, we do it ourselves */
3049 while (PL_doextract || gMacPerl_AlwaysExtract) {
3050 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3051 if (!gMacPerl_AlwaysExtract)
3052 Perl_croak(aTHX_ "No Perl script found in input\n");
3054 if (PL_doextract) /* require explicit override ? */
3055 if (!OverrideExtract(PL_origfilename))
3056 Perl_croak(aTHX_ "User aborted script\n");
3058 PL_doextract = FALSE;
3060 /* Pater peccavi, file does not have #! */
3061 PerlIO_rewind(PL_rsfp);
3066 while (PL_doextract) {
3067 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3068 Perl_croak(aTHX_ "No Perl script found in input\n");
3070 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3071 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3072 PL_doextract = FALSE;
3073 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3075 while (*s == ' ' || *s == '\t') s++;
3077 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3078 if (strnEQ(s2-4,"perl",4))
3080 while ((s = moreswitches(s)))
3091 PL_uid = PerlProc_getuid();
3092 PL_euid = PerlProc_geteuid();
3093 PL_gid = PerlProc_getgid();
3094 PL_egid = PerlProc_getegid();
3096 PL_uid |= PL_gid << 16;
3097 PL_euid |= PL_egid << 16;
3099 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3103 S_forbid_setid(pTHX_ char *s)
3105 if (PL_euid != PL_uid)
3106 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3107 if (PL_egid != PL_gid)
3108 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3112 Perl_init_debugger(pTHX)
3115 HV *ostash = PL_curstash;
3117 PL_curstash = PL_debstash;
3118 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3119 AvREAL_off(PL_dbargs);
3120 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3121 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3122 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3123 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3124 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3125 sv_setiv(PL_DBsingle, 0);
3126 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3127 sv_setiv(PL_DBtrace, 0);
3128 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3129 sv_setiv(PL_DBsignal, 0);
3130 PL_curstash = ostash;
3133 #ifndef STRESS_REALLOC
3134 #define REASONABLE(size) (size)
3136 #define REASONABLE(size) (1) /* unreasonable */
3140 Perl_init_stacks(pTHX)
3142 /* start with 128-item stack and 8K cxstack */
3143 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3144 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3145 PL_curstackinfo->si_type = PERLSI_MAIN;
3146 PL_curstack = PL_curstackinfo->si_stack;
3147 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3149 PL_stack_base = AvARRAY(PL_curstack);
3150 PL_stack_sp = PL_stack_base;
3151 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3153 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3156 PL_tmps_max = REASONABLE(128);
3158 New(54,PL_markstack,REASONABLE(32),I32);
3159 PL_markstack_ptr = PL_markstack;
3160 PL_markstack_max = PL_markstack + REASONABLE(32);
3164 New(54,PL_scopestack,REASONABLE(32),I32);
3165 PL_scopestack_ix = 0;
3166 PL_scopestack_max = REASONABLE(32);
3168 New(54,PL_savestack,REASONABLE(128),ANY);
3169 PL_savestack_ix = 0;
3170 PL_savestack_max = REASONABLE(128);
3172 New(54,PL_retstack,REASONABLE(16),OP*);
3174 PL_retstack_max = REASONABLE(16);
3183 while (PL_curstackinfo->si_next)
3184 PL_curstackinfo = PL_curstackinfo->si_next;
3185 while (PL_curstackinfo) {
3186 PERL_SI *p = PL_curstackinfo->si_prev;
3187 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3188 Safefree(PL_curstackinfo->si_cxstack);
3189 Safefree(PL_curstackinfo);
3190 PL_curstackinfo = p;
3192 Safefree(PL_tmps_stack);
3193 Safefree(PL_markstack);
3194 Safefree(PL_scopestack);
3195 Safefree(PL_savestack);
3196 Safefree(PL_retstack);
3200 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3211 lex_start(PL_linestr);
3213 PL_subname = newSVpvn("main",4);
3217 S_init_predump_symbols(pTHX)
3223 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3224 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3225 GvMULTI_on(PL_stdingv);
3226 io = GvIOp(PL_stdingv);
3227 IoIFP(io) = PerlIO_stdin();
3228 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3230 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3232 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3235 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3237 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3239 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3241 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3242 GvMULTI_on(PL_stderrgv);
3243 io = GvIOp(PL_stderrgv);
3244 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3245 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3247 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3249 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3252 Safefree(PL_osname);
3253 PL_osname = savepv(OSNAME);
3257 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3264 argc--,argv++; /* skip name of script */
3265 if (PL_doswitches) {
3266 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3269 if (argv[0][1] == '-' && !argv[0][2]) {
3273 if ((s = strchr(argv[0], '='))) {
3275 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3278 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3281 PL_toptarget = NEWSV(0,0);
3282 sv_upgrade(PL_toptarget, SVt_PVFM);
3283 sv_setpvn(PL_toptarget, "", 0);
3284 PL_bodytarget = NEWSV(0,0);
3285 sv_upgrade(PL_bodytarget, SVt_PVFM);
3286 sv_setpvn(PL_bodytarget, "", 0);
3287 PL_formtarget = PL_bodytarget;
3290 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3291 #ifdef MACOS_TRADITIONAL
3292 /* $0 is not majick on a Mac */
3293 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3295 sv_setpv(GvSV(tmpgv),PL_origfilename);
3296 magicname("0", "0", 1);
3299 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3301 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3303 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3305 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3306 GvMULTI_on(PL_argvgv);
3307 (void)gv_AVadd(PL_argvgv);
3308 av_clear(GvAVn(PL_argvgv));
3309 for (; argc > 0; argc--,argv++) {
3310 SV *sv = newSVpv(argv[0],0);
3311 av_push(GvAVn(PL_argvgv),sv);
3312 if (PL_widesyscalls)
3313 (void)sv_utf8_decode(sv);
3316 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3318 GvMULTI_on(PL_envgv);
3319 hv = GvHVn(PL_envgv);
3320 hv_magic(hv, PL_envgv, 'E');
3321 #if !defined( VMS) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) /* VMS doesn't have environ array */
3322 /* Note that if the supplied env parameter is actually a copy
3323 of the global environ then it may now point to free'd memory
3324 if the environment has been modified since. To avoid this
3325 problem we treat env==NULL as meaning 'use the default'
3330 environ[0] = Nullch;
3331 for (; *env; env++) {
3332 if (!(s = strchr(*env,'=')))
3338 sv = newSVpv(s--,0);
3339 (void)hv_store(hv, *env, s - *env, sv, 0);
3341 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3342 /* Sins of the RTL. See note in my_setenv(). */
3343 (void)PerlEnv_putenv(savepv(*env));
3347 #ifdef DYNAMIC_ENV_FETCH
3348 HvNAME(hv) = savepv(ENV_HV_NAME);
3352 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3353 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3357 S_init_perllib(pTHX)
3362 s = PerlEnv_getenv("PERL5LIB");
3364 incpush(s, TRUE, TRUE);
3366 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3368 /* Treat PERL5?LIB as a possible search list logical name -- the
3369 * "natural" VMS idiom for a Unix path string. We allow each
3370 * element to be a set of |-separated directories for compatibility.
3374 if (my_trnlnm("PERL5LIB",buf,0))
3375 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3377 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3381 /* Use the ~-expanded versions of APPLLIB (undocumented),
3382 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3385 incpush(APPLLIB_EXP, TRUE, TRUE);
3389 incpush(ARCHLIB_EXP, FALSE, FALSE);
3391 #ifdef MACOS_TRADITIONAL
3393 struct stat tmpstatbuf;
3394 SV * privdir = NEWSV(55, 0);
3395 char * macperl = PerlEnv_getenv("MACPERL");
3400 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3401 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3402 incpush(SvPVX(privdir), TRUE, FALSE);
3403 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3404 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3405 incpush(SvPVX(privdir), TRUE, FALSE);
3407 SvREFCNT_dec(privdir);
3410 incpush(":", FALSE, FALSE);
3413 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3416 incpush(PRIVLIB_EXP, TRUE, FALSE);
3418 incpush(PRIVLIB_EXP, FALSE, FALSE);
3422 /* sitearch is always relative to sitelib on Windows for
3423 * DLL-based path intuition to work correctly */
3424 # if !defined(WIN32)
3425 incpush(SITEARCH_EXP, FALSE, FALSE);
3431 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3433 incpush(SITELIB_EXP, FALSE, FALSE);
3437 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3438 incpush(SITELIB_STEM, FALSE, TRUE);
3441 #ifdef PERL_VENDORARCH_EXP
3442 /* vendorarch is always relative to vendorlib on Windows for
3443 * DLL-based path intuition to work correctly */
3444 # if !defined(WIN32)
3445 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3449 #ifdef PERL_VENDORLIB_EXP
3451 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3453 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3457 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3458 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3461 #ifdef PERL_OTHERLIBDIRS
3462 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3466 incpush(".", FALSE, FALSE);
3467 #endif /* MACOS_TRADITIONAL */
3471 # define PERLLIB_SEP ';'
3474 # define PERLLIB_SEP '|'
3476 # if defined(MACOS_TRADITIONAL)
3477 # define PERLLIB_SEP ','
3479 # define PERLLIB_SEP ':'
3483 #ifndef PERLLIB_MANGLE
3484 # define PERLLIB_MANGLE(s,n) (s)
3488 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3490 SV *subdir = Nullsv;
3495 if (addsubdirs || addoldvers) {
3496 subdir = sv_newmortal();
3499 /* Break at all separators */
3501 SV *libdir = NEWSV(55,0);
3504 /* skip any consecutive separators */
3505 while ( *p == PERLLIB_SEP ) {
3506 /* Uncomment the next line for PATH semantics */
3507 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3511 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3512 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3517 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3518 p = Nullch; /* break out */
3520 #ifdef MACOS_TRADITIONAL
3521 if (!strchr(SvPVX(libdir), ':'))
3522 sv_insert(libdir, 0, 0, ":", 1);
3523 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3524 sv_catpv(libdir, ":");
3528 * BEFORE pushing libdir onto @INC we may first push version- and
3529 * archname-specific sub-directories.
3531 if (addsubdirs || addoldvers) {
3532 #ifdef PERL_INC_VERSION_LIST
3533 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3534 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3535 const char **incver;
3537 struct stat tmpstatbuf;
3542 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3544 while (unix[len-1] == '/') len--; /* Cosmetic */
3545 sv_usepvn(libdir,unix,len);
3548 PerlIO_printf(Perl_error_log,
3549 "Failed to unixify @INC element \"%s\"\n",
3553 #ifdef MACOS_TRADITIONAL
3554 #define PERL_AV_SUFFIX_FMT ""
3555 #define PERL_ARCH_FMT ":%s"
3557 #define PERL_AV_SUFFIX_FMT "/"
3558 #define PERL_ARCH_FMT "/%s"
3560 /* .../version/archname if -d .../version/archname */
3561 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT PERL_ARCH_FMT,
3563 (int)PERL_REVISION, (int)PERL_VERSION,
3564 (int)PERL_SUBVERSION, ARCHNAME);
3565 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3566 S_ISDIR(tmpstatbuf.st_mode))
3567 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3569 /* .../version if -d .../version */
3570 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT, libdir,
3571 (int)PERL_REVISION, (int)PERL_VERSION,
3572 (int)PERL_SUBVERSION);
3573 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3574 S_ISDIR(tmpstatbuf.st_mode))
3575 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3577 /* .../archname if -d .../archname */
3578 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3579 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3580 S_ISDIR(tmpstatbuf.st_mode))
3581 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3584 #ifdef PERL_INC_VERSION_LIST
3586 for (incver = incverlist; *incver; incver++) {
3587 /* .../xxx if -d .../xxx */
3588 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3589 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3590 S_ISDIR(tmpstatbuf.st_mode))
3591 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3597 /* finally push this lib directory on the end of @INC */
3598 av_push(GvAVn(PL_incgv), libdir);
3603 STATIC struct perl_thread *
3604 S_init_main_thread(pTHX)
3606 #if !defined(PERL_IMPLICIT_CONTEXT)
3607 struct perl_thread *thr;
3611 Newz(53, thr, 1, struct perl_thread);
3612 PL_curcop = &PL_compiling;
3613 thr->interp = PERL_GET_INTERP;
3614 thr->cvcache = newHV();
3615 thr->threadsv = newAV();
3616 /* thr->threadsvp is set when find_threadsv is called */
3617 thr->specific = newAV();
3618 thr->flags = THRf_R_JOINABLE;
3619 MUTEX_INIT(&thr->mutex);
3620 /* Handcraft thrsv similarly to mess_sv */
3621 New(53, PL_thrsv, 1, SV);
3622 Newz(53, xpv, 1, XPV);
3623 SvFLAGS(PL_thrsv) = SVt_PV;
3624 SvANY(PL_thrsv) = (void*)xpv;
3625 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3626 SvPVX(PL_thrsv) = (char*)thr;
3627 SvCUR_set(PL_thrsv, sizeof(thr));
3628 SvLEN_set(PL_thrsv, sizeof(thr));
3629 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3630 thr->oursv = PL_thrsv;
3631 PL_chopset = " \n-";
3634 MUTEX_LOCK(&PL_threads_mutex);
3639 MUTEX_UNLOCK(&PL_threads_mutex);
3641 #ifdef HAVE_THREAD_INTERN
3642 Perl_init_thread_intern(thr);
3645 #ifdef SET_THREAD_SELF
3646 SET_THREAD_SELF(thr);
3648 thr->self = pthread_self();
3649 #endif /* SET_THREAD_SELF */
3653 * These must come after the SET_THR because sv_setpvn does
3654 * SvTAINT and the taint fields require dTHR.
3656 PL_toptarget = NEWSV(0,0);
3657 sv_upgrade(PL_toptarget, SVt_PVFM);
3658 sv_setpvn(PL_toptarget, "", 0);
3659 PL_bodytarget = NEWSV(0,0);
3660 sv_upgrade(PL_bodytarget, SVt_PVFM);
3661 sv_setpvn(PL_bodytarget, "", 0);
3662 PL_formtarget = PL_bodytarget;
3663 thr->errsv = newSVpvn("", 0);
3664 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3667 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3668 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3669 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3670 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3671 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3673 PL_reginterp_cnt = 0;
3677 #endif /* USE_THREADS */
3680 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3684 line_t oldline = CopLINE(PL_curcop);
3690 while (AvFILL(paramList) >= 0) {
3691 cv = (CV*)av_shift(paramList);
3692 if ((PL_minus_c & 0x10) && (paramList == PL_beginav)) {
3693 /* save PL_beginav for compiler */
3694 if (! PL_beginav_save)
3695 PL_beginav_save = newAV();
3696 av_push(PL_beginav_save, (SV*)cv);
3700 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3701 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3707 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3711 (void)SvPV(atsv, len);
3714 PL_curcop = &PL_compiling;
3715 CopLINE_set(PL_curcop, oldline);
3716 if (paramList == PL_beginav)
3717 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3719 Perl_sv_catpvf(aTHX_ atsv,
3720 "%s failed--call queue aborted",
3721 paramList == PL_checkav ? "CHECK"
3722 : paramList == PL_initav ? "INIT"
3724 while (PL_scopestack_ix > oldscope)
3727 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3734 /* my_exit() was called */
3735 while (PL_scopestack_ix > oldscope)
3738 PL_curstash = PL_defstash;
3739 PL_curcop = &PL_compiling;
3740 CopLINE_set(PL_curcop, oldline);
3742 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3743 if (paramList == PL_beginav)
3744 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3746 Perl_croak(aTHX_ "%s failed--call queue aborted",
3747 paramList == PL_checkav ? "CHECK"
3748 : paramList == PL_initav ? "INIT"
3755 PL_curcop = &PL_compiling;
3756 CopLINE_set(PL_curcop, oldline);
3759 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3767 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3769 S_vcall_list_body(pTHX_ va_list args)
3771 CV *cv = va_arg(args, CV*);
3772 return call_list_body(cv);
3777 S_call_list_body(pTHX_ CV *cv)
3779 PUSHMARK(PL_stack_sp);
3780 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3785 Perl_my_exit(pTHX_ U32 status)
3789 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3790 thr, (unsigned long) status));
3799 STATUS_NATIVE_SET(status);
3806 Perl_my_failure_exit(pTHX)
3809 if (vaxc$errno & 1) {
3810 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3811 STATUS_NATIVE_SET(44);
3814 if (!vaxc$errno && errno) /* unlikely */
3815 STATUS_NATIVE_SET(44);
3817 STATUS_NATIVE_SET(vaxc$errno);
3822 STATUS_POSIX_SET(errno);
3824 exitstatus = STATUS_POSIX >> 8;
3825 if (exitstatus & 255)
3826 STATUS_POSIX_SET(exitstatus);
3828 STATUS_POSIX_SET(255);
3835 S_my_exit_jump(pTHX)
3838 register PERL_CONTEXT *cx;
3843 SvREFCNT_dec(PL_e_script);
3844 PL_e_script = Nullsv;
3847 POPSTACK_TO(PL_mainstack);
3848 if (cxstack_ix >= 0) {
3851 POPBLOCK(cx,PL_curpm);
3863 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3866 p = SvPVX(PL_e_script);
3867 nl = strchr(p, '\n');
3868 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3870 filter_del(read_e_script);
3873 sv_catpvn(buf_sv, p, nl-p);
3874 sv_chop(PL_e_script, nl);