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__)
1267 init_predump_symbols();
1268 /* init_postdump_symbols not currently designed to be called */
1269 /* more than once (ENV isn't cleared first, for example) */
1270 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1272 init_postdump_symbols(argc,argv,env);
1276 /* now parse the script */
1278 SETERRNO(0,SS$_NORMAL);
1280 #ifdef MACOS_TRADITIONAL
1281 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1283 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1285 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1286 MacPerl_MPWFileName(PL_origfilename));
1290 if (yyparse() || PL_error_count) {
1292 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1294 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1299 CopLINE_set(PL_curcop, 0);
1300 PL_curstash = PL_defstash;
1301 PL_preprocess = FALSE;
1303 SvREFCNT_dec(PL_e_script);
1304 PL_e_script = Nullsv;
1307 /* now that script is parsed, we can modify record separator */
1308 SvREFCNT_dec(PL_rs);
1309 PL_rs = SvREFCNT_inc(PL_nrs);
1310 sv_setsv(get_sv("/", TRUE), PL_rs);
1315 SAVECOPFILE(PL_curcop);
1316 SAVECOPLINE(PL_curcop);
1317 gv_check(PL_defstash);
1324 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1325 dump_mstats("after compilation:");
1334 =for apidoc perl_run
1336 Tells a Perl interpreter to run. See L<perlembed>.
1352 oldscope = PL_scopestack_ix;
1354 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1356 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1362 cxstack_ix = -1; /* start context stack again */
1364 case 0: /* normal completion */
1365 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1370 case 2: /* my_exit() */
1371 while (PL_scopestack_ix > oldscope)
1374 PL_curstash = PL_defstash;
1375 if (PL_endav && !PL_minus_c)
1376 call_list(oldscope, PL_endav);
1378 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1379 dump_mstats("after execution: ");
1381 ret = STATUS_NATIVE_EXPORT;
1385 POPSTACK_TO(PL_mainstack);
1388 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1398 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1400 S_vrun_body(pTHX_ va_list args)
1402 I32 oldscope = va_arg(args, I32);
1404 return run_body(oldscope);
1410 S_run_body(pTHX_ I32 oldscope)
1414 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1415 PL_sawampersand ? "Enabling" : "Omitting"));
1417 if (!PL_restartop) {
1418 DEBUG_x(dump_all());
1419 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1420 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1424 #ifdef MACOS_TRADITIONAL
1425 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1427 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1431 if (PERLDB_SINGLE && PL_DBsingle)
1432 sv_setiv(PL_DBsingle, 1);
1434 call_list(oldscope, PL_initav);
1440 PL_op = PL_restartop;
1444 else if (PL_main_start) {
1445 CvDEPTH(PL_main_cv) = 1;
1446 PL_op = PL_main_start;
1456 =for apidoc p||get_sv
1458 Returns the SV of the specified Perl scalar. If C<create> is set and the
1459 Perl variable does not exist then it will be created. If C<create> is not
1460 set and the variable does not exist then NULL is returned.
1466 Perl_get_sv(pTHX_ const char *name, I32 create)
1470 if (name[1] == '\0' && !isALPHA(name[0])) {
1471 PADOFFSET tmp = find_threadsv(name);
1472 if (tmp != NOT_IN_PAD) {
1474 return THREADSV(tmp);
1477 #endif /* USE_THREADS */
1478 gv = gv_fetchpv(name, create, SVt_PV);
1485 =for apidoc p||get_av
1487 Returns the AV of the specified Perl array. If C<create> is set and the
1488 Perl variable does not exist then it will be created. If C<create> is not
1489 set and the variable does not exist then NULL is returned.
1495 Perl_get_av(pTHX_ const char *name, I32 create)
1497 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1506 =for apidoc p||get_hv
1508 Returns the HV of the specified Perl hash. If C<create> is set and the
1509 Perl variable does not exist then it will be created. If C<create> is not
1510 set and the variable does not exist then NULL is returned.
1516 Perl_get_hv(pTHX_ const char *name, I32 create)
1518 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1527 =for apidoc p||get_cv
1529 Returns the CV of the specified Perl subroutine. If C<create> is set and
1530 the Perl subroutine does not exist then it will be declared (which has the
1531 same effect as saying C<sub name;>). If C<create> is not set and the
1532 subroutine does not exist then NULL is returned.
1538 Perl_get_cv(pTHX_ const char *name, I32 create)
1540 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1541 /* XXX unsafe for threads if eval_owner isn't held */
1542 /* XXX this is probably not what they think they're getting.
1543 * It has the same effect as "sub name;", i.e. just a forward
1545 if (create && !GvCVu(gv))
1546 return newSUB(start_subparse(FALSE, 0),
1547 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1555 /* Be sure to refetch the stack pointer after calling these routines. */
1558 =for apidoc p||call_argv
1560 Performs a callback to the specified Perl sub. See L<perlcall>.
1566 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1568 /* See G_* flags in cop.h */
1569 /* null terminated arg list */
1576 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1581 return call_pv(sub_name, flags);
1585 =for apidoc p||call_pv
1587 Performs a callback to the specified Perl sub. See L<perlcall>.
1593 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1594 /* name of the subroutine */
1595 /* See G_* flags in cop.h */
1597 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1601 =for apidoc p||call_method
1603 Performs a callback to the specified Perl method. The blessed object must
1604 be on the stack. See L<perlcall>.
1610 Perl_call_method(pTHX_ const char *methname, I32 flags)
1611 /* name of the subroutine */
1612 /* See G_* flags in cop.h */
1614 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1617 /* May be called with any of a CV, a GV, or an SV containing the name. */
1619 =for apidoc p||call_sv
1621 Performs a callback to the Perl sub whose name is in the SV. See
1628 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1629 /* See G_* flags in cop.h */
1632 LOGOP myop; /* fake syntax tree node */
1637 bool oldcatch = CATCH_GET;
1642 if (flags & G_DISCARD) {
1647 Zero(&myop, 1, LOGOP);
1648 myop.op_next = Nullop;
1649 if (!(flags & G_NOARGS))
1650 myop.op_flags |= OPf_STACKED;
1651 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1652 (flags & G_ARRAY) ? OPf_WANT_LIST :
1657 EXTEND(PL_stack_sp, 1);
1658 *++PL_stack_sp = sv;
1660 oldscope = PL_scopestack_ix;
1662 if (PERLDB_SUB && PL_curstash != PL_debstash
1663 /* Handle first BEGIN of -d. */
1664 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1665 /* Try harder, since this may have been a sighandler, thus
1666 * curstash may be meaningless. */
1667 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1668 && !(flags & G_NODEBUG))
1669 PL_op->op_private |= OPpENTERSUB_DB;
1671 if (flags & G_METHOD) {
1672 Zero(&method_op, 1, UNOP);
1673 method_op.op_next = PL_op;
1674 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1675 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1676 PL_op = (OP*)&method_op;
1679 if (!(flags & G_EVAL)) {
1681 call_body((OP*)&myop, FALSE);
1682 retval = PL_stack_sp - (PL_stack_base + oldmark);
1683 CATCH_SET(oldcatch);
1686 myop.op_other = (OP*)&myop;
1688 /* we're trying to emulate pp_entertry() here */
1690 register PERL_CONTEXT *cx;
1691 I32 gimme = GIMME_V;
1696 push_return(Nullop);
1697 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1699 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1701 PL_in_eval = EVAL_INEVAL;
1702 if (flags & G_KEEPERR)
1703 PL_in_eval |= EVAL_KEEPERR;
1709 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1711 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1718 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1720 call_body((OP*)&myop, FALSE);
1722 retval = PL_stack_sp - (PL_stack_base + oldmark);
1723 if (!(flags & G_KEEPERR))
1730 /* my_exit() was called */
1731 PL_curstash = PL_defstash;
1734 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1735 Perl_croak(aTHX_ "Callback called exit");
1740 PL_op = PL_restartop;
1744 PL_stack_sp = PL_stack_base + oldmark;
1745 if (flags & G_ARRAY)
1749 *++PL_stack_sp = &PL_sv_undef;
1754 if (PL_scopestack_ix > oldscope) {
1758 register PERL_CONTEXT *cx;
1770 if (flags & G_DISCARD) {
1771 PL_stack_sp = PL_stack_base + oldmark;
1780 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1782 S_vcall_body(pTHX_ va_list args)
1784 OP *myop = va_arg(args, OP*);
1785 int is_eval = va_arg(args, int);
1787 call_body(myop, is_eval);
1793 S_call_body(pTHX_ OP *myop, int is_eval)
1797 if (PL_op == myop) {
1799 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1801 PL_op = Perl_pp_entersub(aTHX); /* this does */
1807 /* Eval a string. The G_EVAL flag is always assumed. */
1810 =for apidoc p||eval_sv
1812 Tells Perl to C<eval> the string in the SV.
1818 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1820 /* See G_* flags in cop.h */
1823 UNOP myop; /* fake syntax tree node */
1824 I32 oldmark = SP - PL_stack_base;
1831 if (flags & G_DISCARD) {
1838 Zero(PL_op, 1, UNOP);
1839 EXTEND(PL_stack_sp, 1);
1840 *++PL_stack_sp = sv;
1841 oldscope = PL_scopestack_ix;
1843 if (!(flags & G_NOARGS))
1844 myop.op_flags = OPf_STACKED;
1845 myop.op_next = Nullop;
1846 myop.op_type = OP_ENTEREVAL;
1847 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1848 (flags & G_ARRAY) ? OPf_WANT_LIST :
1850 if (flags & G_KEEPERR)
1851 myop.op_flags |= OPf_SPECIAL;
1853 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1855 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1862 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1864 call_body((OP*)&myop,TRUE);
1866 retval = PL_stack_sp - (PL_stack_base + oldmark);
1867 if (!(flags & G_KEEPERR))
1874 /* my_exit() was called */
1875 PL_curstash = PL_defstash;
1878 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1879 Perl_croak(aTHX_ "Callback called exit");
1884 PL_op = PL_restartop;
1888 PL_stack_sp = PL_stack_base + oldmark;
1889 if (flags & G_ARRAY)
1893 *++PL_stack_sp = &PL_sv_undef;
1899 if (flags & G_DISCARD) {
1900 PL_stack_sp = PL_stack_base + oldmark;
1910 =for apidoc p||eval_pv
1912 Tells Perl to C<eval> the given string and return an SV* result.
1918 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1921 SV* sv = newSVpv(p, 0);
1923 eval_sv(sv, G_SCALAR);
1930 if (croak_on_error && SvTRUE(ERRSV)) {
1932 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1938 /* Require a module. */
1941 =for apidoc p||require_pv
1943 Tells Perl to C<require> a module.
1949 Perl_require_pv(pTHX_ const char *pv)
1953 PUSHSTACKi(PERLSI_REQUIRE);
1955 sv = sv_newmortal();
1956 sv_setpv(sv, "require '");
1959 eval_sv(sv, G_DISCARD);
1965 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
1969 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
1970 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1974 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
1976 /* This message really ought to be max 23 lines.
1977 * Removed -h because the user already knows that opton. Others? */
1979 static char *usage_msg[] = {
1980 "-0[octal] specify record separator (\\0, if no argument)",
1981 "-a autosplit mode with -n or -p (splits $_ into @F)",
1982 "-C enable native wide character system interfaces",
1983 "-c check syntax only (runs BEGIN and CHECK blocks)",
1984 "-d[:debugger] run program under debugger",
1985 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1986 "-e 'command' one line of program (several -e's allowed, omit programfile)",
1987 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
1988 "-i[extension] edit <> files in place (makes backup if extension supplied)",
1989 "-Idirectory specify @INC/#include directory (several -I's allowed)",
1990 "-l[octal] enable line ending processing, specifies line terminator",
1991 "-[mM][-]module execute `use/no module...' before executing program",
1992 "-n assume 'while (<>) { ... }' loop around program",
1993 "-p assume loop like -n but print line also, like sed",
1994 "-P run program through C preprocessor before compilation",
1995 "-s enable rudimentary parsing for switches after programfile",
1996 "-S look for programfile using PATH environment variable",
1997 "-T enable tainting checks",
1998 "-u dump core after parsing program",
1999 "-U allow unsafe operations",
2000 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2001 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2002 "-w enable many useful warnings (RECOMMENDED)",
2003 "-W enable all warnings",
2004 "-X disable all warnings",
2005 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2009 char **p = usage_msg;
2011 PerlIO_printf(PerlIO_stdout(),
2012 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2015 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2018 /* This routine handles any switches that can be given during run */
2021 Perl_moreswitches(pTHX_ char *s)
2030 numlen = 0; /* disallow underscores */
2031 rschar = (U32)scan_oct(s, 4, &numlen);
2032 SvREFCNT_dec(PL_nrs);
2033 if (rschar & ~((U8)~0))
2034 PL_nrs = &PL_sv_undef;
2035 else if (!rschar && numlen >= 2)
2036 PL_nrs = newSVpvn("", 0);
2039 PL_nrs = newSVpvn(&ch, 1);
2044 PL_widesyscalls = TRUE;
2049 PL_splitstr = savepv(s + 1);
2063 /* The following permits -d:Mod to accepts arguments following an =
2064 in the fashion that -MSome::Mod does. */
2065 if (*s == ':' || *s == '=') {
2068 sv = newSVpv("use Devel::", 0);
2070 /* We now allow -d:Module=Foo,Bar */
2071 while(isALNUM(*s) || *s==':') ++s;
2073 sv_catpv(sv, start);
2075 sv_catpvn(sv, start, s-start);
2076 sv_catpv(sv, " split(/,/,q{");
2081 my_setenv("PERL5DB", SvPV(sv, PL_na));
2084 PL_perldb = PERLDB_ALL;
2092 if (isALPHA(s[1])) {
2093 static char debopts[] = "psltocPmfrxuLHXDS";
2096 for (s++; *s && (d = strchr(debopts,*s)); s++)
2097 PL_debug |= 1 << (d - debopts);
2100 PL_debug = atoi(s+1);
2101 for (s++; isDIGIT(*s); s++) ;
2103 PL_debug |= 0x80000000;
2106 if (ckWARN_d(WARN_DEBUGGING))
2107 Perl_warner(aTHX_ WARN_DEBUGGING,
2108 "Recompile perl with -DDEBUGGING to use -D switch\n");
2109 for (s++; isALNUM(*s); s++) ;
2115 usage(PL_origargv[0]);
2119 Safefree(PL_inplace);
2120 PL_inplace = savepv(s+1);
2122 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2125 if (*s == '-') /* Additional switches on #! line. */
2129 case 'I': /* -I handled both here and in parse_perl() */
2132 while (*s && isSPACE(*s))
2137 /* ignore trailing spaces (possibly followed by other switches) */
2139 for (e = p; *e && !isSPACE(*e); e++) ;
2143 } while (*p && *p != '-');
2144 e = savepvn(s, e-s);
2145 incpush(e, TRUE, TRUE);
2152 Perl_croak(aTHX_ "No directory specified for -I");
2160 PL_ors = savepv("\n");
2162 numlen = 0; /* disallow underscores */
2163 *PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2168 if (RsPARA(PL_nrs)) {
2173 PL_ors = SvPV(PL_nrs, PL_orslen);
2174 PL_ors = savepvn(PL_ors, PL_orslen);
2178 forbid_setid("-M"); /* XXX ? */
2181 forbid_setid("-m"); /* XXX ? */
2186 /* -M-foo == 'no foo' */
2187 if (*s == '-') { use = "no "; ++s; }
2188 sv = newSVpv(use,0);
2190 /* We allow -M'Module qw(Foo Bar)' */
2191 while(isALNUM(*s) || *s==':') ++s;
2193 sv_catpv(sv, start);
2194 if (*(start-1) == 'm') {
2196 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2197 sv_catpv( sv, " ()");
2201 Perl_croak(aTHX_ "Module name required with -%c option",
2203 sv_catpvn(sv, start, s-start);
2204 sv_catpv(sv, " split(/,/,q{");
2210 PL_preambleav = newAV();
2211 av_push(PL_preambleav, sv);
2214 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2226 PL_doswitches = TRUE;
2231 Perl_croak(aTHX_ "Too late for \"-T\" option");
2235 #ifdef MACOS_TRADITIONAL
2236 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2238 PL_do_undump = TRUE;
2246 PerlIO_printf(PerlIO_stdout(),
2247 Perl_form(aTHX_ "\nThis is perl, v%vd built for %s",
2248 PL_patchlevel, ARCHNAME));
2249 #if defined(LOCAL_PATCH_COUNT)
2250 if (LOCAL_PATCH_COUNT > 0)
2251 PerlIO_printf(PerlIO_stdout(),
2252 "\n(with %d registered patch%s, "
2253 "see perl -V for more detail)",
2254 (int)LOCAL_PATCH_COUNT,
2255 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2258 PerlIO_printf(PerlIO_stdout(),
2259 "\n\nCopyright 1987-2000, Larry Wall\n");
2260 #ifdef MACOS_TRADITIONAL
2261 PerlIO_printf(PerlIO_stdout(),
2262 "\nMacOS port Copyright (c) 1991-2000, Matthias Neeracher\n");
2265 PerlIO_printf(PerlIO_stdout(),
2266 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2269 PerlIO_printf(PerlIO_stdout(),
2270 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2271 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2274 PerlIO_printf(PerlIO_stdout(),
2275 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2276 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2279 PerlIO_printf(PerlIO_stdout(),
2280 "atariST series port, ++jrb bammi@cadence.com\n");
2283 PerlIO_printf(PerlIO_stdout(),
2284 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2287 PerlIO_printf(PerlIO_stdout(),
2288 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
2291 PerlIO_printf(PerlIO_stdout(),
2292 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2295 PerlIO_printf(PerlIO_stdout(),
2296 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2299 PerlIO_printf(PerlIO_stdout(),
2300 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2303 PerlIO_printf(PerlIO_stdout(),
2304 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2307 PerlIO_printf(PerlIO_stdout(),
2308 "MiNT port by Guido Flohr, 1997-1999\n");
2311 PerlIO_printf(PerlIO_stdout(),
2312 "EPOC port by Olaf Flebbe, 1999-2000\n");
2314 #ifdef BINARY_BUILD_NOTICE
2315 BINARY_BUILD_NOTICE;
2317 PerlIO_printf(PerlIO_stdout(),
2319 Perl may be copied only under the terms of either the Artistic License or the\n\
2320 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
2321 Complete documentation for Perl, including FAQ lists, should be found on\n\
2322 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2323 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2326 if (! (PL_dowarn & G_WARN_ALL_MASK))
2327 PL_dowarn |= G_WARN_ON;
2331 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2332 PL_compiling.cop_warnings = pWARN_ALL ;
2336 PL_dowarn = G_WARN_ALL_OFF;
2337 PL_compiling.cop_warnings = pWARN_NONE ;
2342 if (s[1] == '-') /* Additional switches on #! line. */
2347 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2353 #ifdef ALTERNATE_SHEBANG
2354 case 'S': /* OS/2 needs -S on "extproc" line. */
2362 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2367 /* compliments of Tom Christiansen */
2369 /* unexec() can be found in the Gnu emacs distribution */
2370 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2373 Perl_my_unexec(pTHX)
2381 prog = newSVpv(BIN_EXP, 0);
2382 sv_catpv(prog, "/perl");
2383 file = newSVpv(PL_origfilename, 0);
2384 sv_catpv(file, ".perldump");
2386 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2387 /* unexec prints msg to stderr in case of failure */
2388 PerlProc_exit(status);
2391 # include <lib$routines.h>
2392 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2394 ABORT(); /* for use with undump */
2399 /* initialize curinterp */
2404 #ifdef PERL_OBJECT /* XXX kludge */
2407 PL_chopset = " \n-"; \
2408 PL_copline = NOLINE; \
2409 PL_curcop = &PL_compiling;\
2410 PL_curcopdb = NULL; \
2412 PL_dumpindent = 4; \
2413 PL_laststatval = -1; \
2414 PL_laststype = OP_STAT; \
2415 PL_maxscream = -1; \
2416 PL_maxsysfd = MAXSYSFD; \
2417 PL_statname = Nullsv; \
2418 PL_tmps_floor = -1; \
2420 PL_op_mask = NULL; \
2421 PL_laststatval = -1; \
2422 PL_laststype = OP_STAT; \
2423 PL_mess_sv = Nullsv; \
2424 PL_splitstr = " "; \
2425 PL_generation = 100; \
2426 PL_exitlist = NULL; \
2427 PL_exitlistlen = 0; \
2429 PL_in_clean_objs = FALSE; \
2430 PL_in_clean_all = FALSE; \
2431 PL_profiledata = NULL; \
2433 PL_rsfp_filters = Nullav; \
2438 # ifdef MULTIPLICITY
2439 # define PERLVAR(var,type)
2440 # define PERLVARA(var,n,type)
2441 # if defined(PERL_IMPLICIT_CONTEXT)
2442 # if defined(USE_THREADS)
2443 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2444 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2445 # else /* !USE_THREADS */
2446 # define PERLVARI(var,type,init) aTHX->var = init;
2447 # define PERLVARIC(var,type,init) aTHX->var = init;
2448 # endif /* USE_THREADS */
2450 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2451 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2453 # include "intrpvar.h"
2454 # ifndef USE_THREADS
2455 # include "thrdvar.h"
2462 # define PERLVAR(var,type)
2463 # define PERLVARA(var,n,type)
2464 # define PERLVARI(var,type,init) PL_##var = init;
2465 # define PERLVARIC(var,type,init) PL_##var = init;
2466 # include "intrpvar.h"
2467 # ifndef USE_THREADS
2468 # include "thrdvar.h"
2480 S_init_main_stash(pTHX)
2485 /* Note that strtab is a rather special HV. Assumptions are made
2486 about not iterating on it, and not adding tie magic to it.
2487 It is properly deallocated in perl_destruct() */
2488 PL_strtab = newHV();
2490 MUTEX_INIT(&PL_strtab_mutex);
2492 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2493 hv_ksplit(PL_strtab, 512);
2495 PL_curstash = PL_defstash = newHV();
2496 PL_curstname = newSVpvn("main",4);
2497 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2498 SvREFCNT_dec(GvHV(gv));
2499 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2501 HvNAME(PL_defstash) = savepv("main");
2502 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2503 GvMULTI_on(PL_incgv);
2504 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2505 GvMULTI_on(PL_hintgv);
2506 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2507 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2508 GvMULTI_on(PL_errgv);
2509 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2510 GvMULTI_on(PL_replgv);
2511 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2512 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2513 sv_setpvn(ERRSV, "", 0);
2514 PL_curstash = PL_defstash;
2515 CopSTASH_set(&PL_compiling, PL_defstash);
2516 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2517 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2518 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2519 /* We must init $/ before switches are processed. */
2520 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2524 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2531 PL_origfilename = savepv("-e");
2534 /* if find_script() returns, it returns a malloc()-ed value */
2535 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2537 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2538 char *s = scriptname + 8;
2539 *fdscript = atoi(s);
2543 scriptname = savepv(s + 1);
2544 Safefree(PL_origfilename);
2545 PL_origfilename = scriptname;
2551 Safefree(CopFILE(PL_curcop));
2553 SvREFCNT_dec(CopFILEGV(PL_curcop));
2555 CopFILE_set(PL_curcop, PL_origfilename);
2556 if (strEQ(PL_origfilename,"-"))
2558 if (*fdscript >= 0) {
2559 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2560 #if defined(HAS_FCNTL) && defined(F_SETFD)
2562 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2565 else if (PL_preprocess) {
2566 char *cpp_cfg = CPPSTDIN;
2567 SV *cpp = newSVpvn("",0);
2568 SV *cmd = NEWSV(0,0);
2570 if (strEQ(cpp_cfg, "cppstdin"))
2571 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2572 sv_catpv(cpp, cpp_cfg);
2574 sv_catpvn(sv, "-I", 2);
2575 sv_catpv(sv,PRIVLIB_EXP);
2577 #if defined(MSDOS) || defined(WIN32)
2578 Perl_sv_setpvf(aTHX_ cmd, "\
2579 sed %s -e \"/^[^#]/b\" \
2580 -e \"/^#[ ]*include[ ]/b\" \
2581 -e \"/^#[ ]*define[ ]/b\" \
2582 -e \"/^#[ ]*if[ ]/b\" \
2583 -e \"/^#[ ]*ifdef[ ]/b\" \
2584 -e \"/^#[ ]*ifndef[ ]/b\" \
2585 -e \"/^#[ ]*else/b\" \
2586 -e \"/^#[ ]*elif[ ]/b\" \
2587 -e \"/^#[ ]*undef[ ]/b\" \
2588 -e \"/^#[ ]*endif/b\" \
2590 %s | %"SVf" -C %"SVf" %s",
2591 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2594 Perl_sv_setpvf(aTHX_ cmd, "\
2595 %s %s -e '/^[^#]/b' \
2596 -e '/^#[ ]*include[ ]/b' \
2597 -e '/^#[ ]*define[ ]/b' \
2598 -e '/^#[ ]*if[ ]/b' \
2599 -e '/^#[ ]*ifdef[ ]/b' \
2600 -e '/^#[ ]*ifndef[ ]/b' \
2601 -e '/^#[ ]*else/b' \
2602 -e '/^#[ ]*elif[ ]/b' \
2603 -e '/^#[ ]*undef[ ]/b' \
2604 -e '/^#[ ]*endif/b' \
2606 %s | %"SVf" %"SVf" %s",
2608 Perl_sv_setpvf(aTHX_ cmd, "\
2609 %s %s -e '/^[^#]/b' \
2610 -e '/^#[ ]*include[ ]/b' \
2611 -e '/^#[ ]*define[ ]/b' \
2612 -e '/^#[ ]*if[ ]/b' \
2613 -e '/^#[ ]*ifdef[ ]/b' \
2614 -e '/^#[ ]*ifndef[ ]/b' \
2615 -e '/^#[ ]*else/b' \
2616 -e '/^#[ ]*elif[ ]/b' \
2617 -e '/^#[ ]*undef[ ]/b' \
2618 -e '/^#[ ]*endif/b' \
2620 %s | %"SVf" -C %"SVf" %s",
2627 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2629 scriptname, cpp, sv, CPPMINUS);
2630 PL_doextract = FALSE;
2631 #ifdef IAMSUID /* actually, this is caught earlier */
2632 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2634 (void)seteuid(PL_uid); /* musn't stay setuid root */
2637 (void)setreuid((Uid_t)-1, PL_uid);
2639 #ifdef HAS_SETRESUID
2640 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2642 PerlProc_setuid(PL_uid);
2646 if (PerlProc_geteuid() != PL_uid)
2647 Perl_croak(aTHX_ "Can't do seteuid!\n");
2649 #endif /* IAMSUID */
2650 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2654 else if (!*scriptname) {
2655 forbid_setid("program input from stdin");
2656 PL_rsfp = PerlIO_stdin();
2659 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2660 #if defined(HAS_FCNTL) && defined(F_SETFD)
2662 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2667 #ifndef IAMSUID /* in case script is not readable before setuid */
2669 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2670 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2673 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2674 (int)PERL_REVISION, (int)PERL_VERSION,
2675 (int)PERL_SUBVERSION), PL_origargv);
2676 Perl_croak(aTHX_ "Can't do setuid\n");
2680 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2681 CopFILE(PL_curcop), Strerror(errno));
2686 * I_SYSSTATVFS HAS_FSTATVFS
2688 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2689 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2690 * here so that metaconfig picks them up. */
2694 S_fd_on_nosuid_fs(pTHX_ int fd)
2696 int check_okay = 0; /* able to do all the required sys/libcalls */
2697 int on_nosuid = 0; /* the fd is on a nosuid fs */
2699 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2700 * fstatvfs() is UNIX98.
2701 * fstatfs() is 4.3 BSD.
2702 * ustat()+getmnt() is pre-4.3 BSD.
2703 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2704 * an irrelevant filesystem while trying to reach the right one.
2707 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2709 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2710 defined(HAS_FSTATVFS)
2711 # define FD_ON_NOSUID_CHECK_OKAY
2712 struct statvfs stfs;
2714 check_okay = fstatvfs(fd, &stfs) == 0;
2715 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2716 # endif /* fstatvfs */
2718 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2719 defined(PERL_MOUNT_NOSUID) && \
2720 defined(HAS_FSTATFS) && \
2721 defined(HAS_STRUCT_STATFS) && \
2722 defined(HAS_STRUCT_STATFS_F_FLAGS)
2723 # define FD_ON_NOSUID_CHECK_OKAY
2726 check_okay = fstatfs(fd, &stfs) == 0;
2727 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2728 # endif /* fstatfs */
2730 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2731 defined(PERL_MOUNT_NOSUID) && \
2732 defined(HAS_FSTAT) && \
2733 defined(HAS_USTAT) && \
2734 defined(HAS_GETMNT) && \
2735 defined(HAS_STRUCT_FS_DATA) && \
2737 # define FD_ON_NOSUID_CHECK_OKAY
2740 if (fstat(fd, &fdst) == 0) {
2742 if (ustat(fdst.st_dev, &us) == 0) {
2744 /* NOSTAT_ONE here because we're not examining fields which
2745 * vary between that case and STAT_ONE. */
2746 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2747 size_t cmplen = sizeof(us.f_fname);
2748 if (sizeof(fsd.fd_req.path) < cmplen)
2749 cmplen = sizeof(fsd.fd_req.path);
2750 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2751 fdst.st_dev == fsd.fd_req.dev) {
2753 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2759 # endif /* fstat+ustat+getmnt */
2761 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2762 defined(HAS_GETMNTENT) && \
2763 defined(HAS_HASMNTOPT) && \
2764 defined(MNTOPT_NOSUID)
2765 # define FD_ON_NOSUID_CHECK_OKAY
2766 FILE *mtab = fopen("/etc/mtab", "r");
2767 struct mntent *entry;
2768 struct stat stb, fsb;
2770 if (mtab && (fstat(fd, &stb) == 0)) {
2771 while (entry = getmntent(mtab)) {
2772 if (stat(entry->mnt_dir, &fsb) == 0
2773 && fsb.st_dev == stb.st_dev)
2775 /* found the filesystem */
2777 if (hasmntopt(entry, MNTOPT_NOSUID))
2780 } /* A single fs may well fail its stat(). */
2785 # endif /* getmntent+hasmntopt */
2788 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2791 #endif /* IAMSUID */
2794 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2800 /* do we need to emulate setuid on scripts? */
2802 /* This code is for those BSD systems that have setuid #! scripts disabled
2803 * in the kernel because of a security problem. Merely defining DOSUID
2804 * in perl will not fix that problem, but if you have disabled setuid
2805 * scripts in the kernel, this will attempt to emulate setuid and setgid
2806 * on scripts that have those now-otherwise-useless bits set. The setuid
2807 * root version must be called suidperl or sperlN.NNN. If regular perl
2808 * discovers that it has opened a setuid script, it calls suidperl with
2809 * the same argv that it had. If suidperl finds that the script it has
2810 * just opened is NOT setuid root, it sets the effective uid back to the
2811 * uid. We don't just make perl setuid root because that loses the
2812 * effective uid we had before invoking perl, if it was different from the
2815 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2816 * be defined in suidperl only. suidperl must be setuid root. The
2817 * Configure script will set this up for you if you want it.
2824 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2825 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2826 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2831 #ifndef HAS_SETREUID
2832 /* On this access check to make sure the directories are readable,
2833 * there is actually a small window that the user could use to make
2834 * filename point to an accessible directory. So there is a faint
2835 * chance that someone could execute a setuid script down in a
2836 * non-accessible directory. I don't know what to do about that.
2837 * But I don't think it's too important. The manual lies when
2838 * it says access() is useful in setuid programs.
2840 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2841 Perl_croak(aTHX_ "Permission denied");
2843 /* If we can swap euid and uid, then we can determine access rights
2844 * with a simple stat of the file, and then compare device and
2845 * inode to make sure we did stat() on the same file we opened.
2846 * Then we just have to make sure he or she can execute it.
2849 struct stat tmpstatbuf;
2853 setreuid(PL_euid,PL_uid) < 0
2856 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2859 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2860 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2861 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2862 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2863 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2864 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2865 Perl_croak(aTHX_ "Permission denied");
2867 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2868 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2869 (void)PerlIO_close(PL_rsfp);
2870 Perl_croak(aTHX_ "Permission denied\n");
2874 setreuid(PL_uid,PL_euid) < 0
2876 # if defined(HAS_SETRESUID)
2877 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2880 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2881 Perl_croak(aTHX_ "Can't reswap uid and euid");
2882 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2883 Perl_croak(aTHX_ "Permission denied\n");
2885 #endif /* HAS_SETREUID */
2886 #endif /* IAMSUID */
2888 if (!S_ISREG(PL_statbuf.st_mode))
2889 Perl_croak(aTHX_ "Permission denied");
2890 if (PL_statbuf.st_mode & S_IWOTH)
2891 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2892 PL_doswitches = FALSE; /* -s is insecure in suid */
2893 CopLINE_inc(PL_curcop);
2894 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2895 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2896 Perl_croak(aTHX_ "No #! line");
2897 s = SvPV(PL_linestr,n_a)+2;
2899 while (!isSPACE(*s)) s++;
2900 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2901 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2902 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2903 Perl_croak(aTHX_ "Not a perl script");
2904 while (*s == ' ' || *s == '\t') s++;
2906 * #! arg must be what we saw above. They can invoke it by
2907 * mentioning suidperl explicitly, but they may not add any strange
2908 * arguments beyond what #! says if they do invoke suidperl that way.
2910 len = strlen(validarg);
2911 if (strEQ(validarg," PHOOEY ") ||
2912 strnNE(s,validarg,len) || !isSPACE(s[len]))
2913 Perl_croak(aTHX_ "Args must match #! line");
2916 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2917 PL_euid == PL_statbuf.st_uid)
2919 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2920 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2921 #endif /* IAMSUID */
2923 if (PL_euid) { /* oops, we're not the setuid root perl */
2924 (void)PerlIO_close(PL_rsfp);
2927 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2928 (int)PERL_REVISION, (int)PERL_VERSION,
2929 (int)PERL_SUBVERSION), PL_origargv);
2931 Perl_croak(aTHX_ "Can't do setuid\n");
2934 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2936 (void)setegid(PL_statbuf.st_gid);
2939 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2941 #ifdef HAS_SETRESGID
2942 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2944 PerlProc_setgid(PL_statbuf.st_gid);
2948 if (PerlProc_getegid() != PL_statbuf.st_gid)
2949 Perl_croak(aTHX_ "Can't do setegid!\n");
2951 if (PL_statbuf.st_mode & S_ISUID) {
2952 if (PL_statbuf.st_uid != PL_euid)
2954 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2957 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2959 #ifdef HAS_SETRESUID
2960 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2962 PerlProc_setuid(PL_statbuf.st_uid);
2966 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2967 Perl_croak(aTHX_ "Can't do seteuid!\n");
2969 else if (PL_uid) { /* oops, mustn't run as root */
2971 (void)seteuid((Uid_t)PL_uid);
2974 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2976 #ifdef HAS_SETRESUID
2977 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2979 PerlProc_setuid((Uid_t)PL_uid);
2983 if (PerlProc_geteuid() != PL_uid)
2984 Perl_croak(aTHX_ "Can't do seteuid!\n");
2987 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2988 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
2991 else if (PL_preprocess)
2992 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
2993 else if (fdscript >= 0)
2994 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
2996 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
2998 /* We absolutely must clear out any saved ids here, so we */
2999 /* exec the real perl, substituting fd script for scriptname. */
3000 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3001 PerlIO_rewind(PL_rsfp);
3002 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3003 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3004 if (!PL_origargv[which])
3005 Perl_croak(aTHX_ "Permission denied");
3006 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3007 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3008 #if defined(HAS_FCNTL) && defined(F_SETFD)
3009 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3011 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3012 (int)PERL_REVISION, (int)PERL_VERSION,
3013 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3014 Perl_croak(aTHX_ "Can't do setuid\n");
3015 #endif /* IAMSUID */
3017 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3018 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3020 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3021 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3023 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3026 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3027 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3028 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3029 /* not set-id, must be wrapped */
3035 S_find_beginning(pTHX)
3037 register char *s, *s2;
3039 /* skip forward in input to the real script? */
3042 #ifdef MACOS_TRADITIONAL
3043 /* Since the Mac OS does not honor !# arguments for us, we do it ourselves */
3045 while (PL_doextract || gMacPerl_AlwaysExtract) {
3046 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3047 if (!gMacPerl_AlwaysExtract)
3048 Perl_croak(aTHX_ "No Perl script found in input\n");
3050 if (PL_doextract) /* require explicit override ? */
3051 if (!OverrideExtract(PL_origfilename))
3052 Perl_croak(aTHX_ "User aborted script\n");
3054 PL_doextract = FALSE;
3056 /* Pater peccavi, file does not have #! */
3057 PerlIO_rewind(PL_rsfp);
3062 while (PL_doextract) {
3063 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3064 Perl_croak(aTHX_ "No Perl script found in input\n");
3066 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3067 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3068 PL_doextract = FALSE;
3069 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3071 while (*s == ' ' || *s == '\t') s++;
3073 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3074 if (strnEQ(s2-4,"perl",4))
3076 while ((s = moreswitches(s)))
3087 PL_uid = PerlProc_getuid();
3088 PL_euid = PerlProc_geteuid();
3089 PL_gid = PerlProc_getgid();
3090 PL_egid = PerlProc_getegid();
3092 PL_uid |= PL_gid << 16;
3093 PL_euid |= PL_egid << 16;
3095 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3099 S_forbid_setid(pTHX_ char *s)
3101 if (PL_euid != PL_uid)
3102 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3103 if (PL_egid != PL_gid)
3104 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3108 Perl_init_debugger(pTHX)
3111 HV *ostash = PL_curstash;
3113 PL_curstash = PL_debstash;
3114 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3115 AvREAL_off(PL_dbargs);
3116 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3117 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3118 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3119 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3120 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3121 sv_setiv(PL_DBsingle, 0);
3122 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3123 sv_setiv(PL_DBtrace, 0);
3124 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3125 sv_setiv(PL_DBsignal, 0);
3126 PL_curstash = ostash;
3129 #ifndef STRESS_REALLOC
3130 #define REASONABLE(size) (size)
3132 #define REASONABLE(size) (1) /* unreasonable */
3136 Perl_init_stacks(pTHX)
3138 /* start with 128-item stack and 8K cxstack */
3139 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3140 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3141 PL_curstackinfo->si_type = PERLSI_MAIN;
3142 PL_curstack = PL_curstackinfo->si_stack;
3143 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3145 PL_stack_base = AvARRAY(PL_curstack);
3146 PL_stack_sp = PL_stack_base;
3147 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3149 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3152 PL_tmps_max = REASONABLE(128);
3154 New(54,PL_markstack,REASONABLE(32),I32);
3155 PL_markstack_ptr = PL_markstack;
3156 PL_markstack_max = PL_markstack + REASONABLE(32);
3160 New(54,PL_scopestack,REASONABLE(32),I32);
3161 PL_scopestack_ix = 0;
3162 PL_scopestack_max = REASONABLE(32);
3164 New(54,PL_savestack,REASONABLE(128),ANY);
3165 PL_savestack_ix = 0;
3166 PL_savestack_max = REASONABLE(128);
3168 New(54,PL_retstack,REASONABLE(16),OP*);
3170 PL_retstack_max = REASONABLE(16);
3179 while (PL_curstackinfo->si_next)
3180 PL_curstackinfo = PL_curstackinfo->si_next;
3181 while (PL_curstackinfo) {
3182 PERL_SI *p = PL_curstackinfo->si_prev;
3183 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3184 Safefree(PL_curstackinfo->si_cxstack);
3185 Safefree(PL_curstackinfo);
3186 PL_curstackinfo = p;
3188 Safefree(PL_tmps_stack);
3189 Safefree(PL_markstack);
3190 Safefree(PL_scopestack);
3191 Safefree(PL_savestack);
3192 Safefree(PL_retstack);
3196 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3207 lex_start(PL_linestr);
3209 PL_subname = newSVpvn("main",4);
3213 S_init_predump_symbols(pTHX)
3219 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3220 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3221 GvMULTI_on(PL_stdingv);
3222 io = GvIOp(PL_stdingv);
3223 IoIFP(io) = PerlIO_stdin();
3224 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3226 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3228 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3231 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3233 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3235 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3237 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3238 GvMULTI_on(PL_stderrgv);
3239 io = GvIOp(PL_stderrgv);
3240 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3241 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3243 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3245 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3248 Safefree(PL_osname);
3249 PL_osname = savepv(OSNAME);
3253 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3260 argc--,argv++; /* skip name of script */
3261 if (PL_doswitches) {
3262 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3265 if (argv[0][1] == '-' && !argv[0][2]) {
3269 if ((s = strchr(argv[0], '='))) {
3271 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3274 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3277 PL_toptarget = NEWSV(0,0);
3278 sv_upgrade(PL_toptarget, SVt_PVFM);
3279 sv_setpvn(PL_toptarget, "", 0);
3280 PL_bodytarget = NEWSV(0,0);
3281 sv_upgrade(PL_bodytarget, SVt_PVFM);
3282 sv_setpvn(PL_bodytarget, "", 0);
3283 PL_formtarget = PL_bodytarget;
3286 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3287 #ifdef MACOS_TRADITIONAL
3288 /* $0 is not majick on a Mac */
3289 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3291 sv_setpv(GvSV(tmpgv),PL_origfilename);
3292 magicname("0", "0", 1);
3295 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3297 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3299 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3301 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3302 GvMULTI_on(PL_argvgv);
3303 (void)gv_AVadd(PL_argvgv);
3304 av_clear(GvAVn(PL_argvgv));
3305 for (; argc > 0; argc--,argv++) {
3306 SV *sv = newSVpv(argv[0],0);
3307 av_push(GvAVn(PL_argvgv),sv);
3308 if (PL_widesyscalls)
3309 (void)sv_utf8_decode(sv);
3312 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3314 GvMULTI_on(PL_envgv);
3315 hv = GvHVn(PL_envgv);
3316 hv_magic(hv, PL_envgv, 'E');
3317 #if !defined( VMS) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) /* VMS doesn't have environ array */
3318 /* Note that if the supplied env parameter is actually a copy
3319 of the global environ then it may now point to free'd memory
3320 if the environment has been modified since. To avoid this
3321 problem we treat env==NULL as meaning 'use the default'
3326 environ[0] = Nullch;
3327 for (; *env; env++) {
3328 if (!(s = strchr(*env,'=')))
3334 sv = newSVpv(s--,0);
3335 (void)hv_store(hv, *env, s - *env, sv, 0);
3337 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3338 /* Sins of the RTL. See note in my_setenv(). */
3339 (void)PerlEnv_putenv(savepv(*env));
3343 #ifdef DYNAMIC_ENV_FETCH
3344 HvNAME(hv) = savepv(ENV_HV_NAME);
3348 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3349 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3353 S_init_perllib(pTHX)
3358 s = PerlEnv_getenv("PERL5LIB");
3360 incpush(s, TRUE, TRUE);
3362 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3364 /* Treat PERL5?LIB as a possible search list logical name -- the
3365 * "natural" VMS idiom for a Unix path string. We allow each
3366 * element to be a set of |-separated directories for compatibility.
3370 if (my_trnlnm("PERL5LIB",buf,0))
3371 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3373 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3377 /* Use the ~-expanded versions of APPLLIB (undocumented),
3378 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3381 incpush(APPLLIB_EXP, TRUE, TRUE);
3385 incpush(ARCHLIB_EXP, FALSE, FALSE);
3387 #ifdef MACOS_TRADITIONAL
3389 struct stat tmpstatbuf;
3390 SV * privdir = NEWSV(55, 0);
3391 char * macperl = PerlEnv_getenv("MACPERL");
3396 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3397 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3398 incpush(SvPVX(privdir), TRUE, FALSE);
3399 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3400 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3401 incpush(SvPVX(privdir), TRUE, FALSE);
3403 SvREFCNT_dec(privdir);
3406 incpush(":", FALSE, FALSE);
3409 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3412 incpush(PRIVLIB_EXP, TRUE, FALSE);
3414 incpush(PRIVLIB_EXP, FALSE, FALSE);
3418 /* sitearch is always relative to sitelib on Windows for
3419 * DLL-based path intuition to work correctly */
3420 # if !defined(WIN32)
3421 incpush(SITEARCH_EXP, FALSE, FALSE);
3427 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3429 incpush(SITELIB_EXP, FALSE, FALSE);
3433 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3434 incpush(SITELIB_STEM, FALSE, TRUE);
3437 #ifdef PERL_VENDORARCH_EXP
3438 /* vendorarch is always relative to vendorlib on Windows for
3439 * DLL-based path intuition to work correctly */
3440 # if !defined(WIN32)
3441 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3445 #ifdef PERL_VENDORLIB_EXP
3447 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3449 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3453 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3454 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3457 #ifdef PERL_OTHERLIBDIRS
3458 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3462 incpush(".", FALSE, FALSE);
3463 #endif /* MACOS_TRADITIONAL */
3467 # define PERLLIB_SEP ';'
3470 # define PERLLIB_SEP '|'
3472 # if defined(MACOS_TRADITIONAL)
3473 # define PERLLIB_SEP ','
3475 # define PERLLIB_SEP ':'
3479 #ifndef PERLLIB_MANGLE
3480 # define PERLLIB_MANGLE(s,n) (s)
3484 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3486 SV *subdir = Nullsv;
3491 if (addsubdirs || addoldvers) {
3492 subdir = sv_newmortal();
3495 /* Break at all separators */
3497 SV *libdir = NEWSV(55,0);
3500 /* skip any consecutive separators */
3501 while ( *p == PERLLIB_SEP ) {
3502 /* Uncomment the next line for PATH semantics */
3503 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3507 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3508 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3513 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3514 p = Nullch; /* break out */
3516 #ifdef MACOS_TRADITIONAL
3517 if (!strchr(SvPVX(libdir), ':'))
3518 sv_insert(libdir, 0, 0, ":", 1);
3519 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3520 sv_catpv(libdir, ":");
3524 * BEFORE pushing libdir onto @INC we may first push version- and
3525 * archname-specific sub-directories.
3527 if (addsubdirs || addoldvers) {
3528 #ifdef PERL_INC_VERSION_LIST
3529 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3530 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3531 const char **incver;
3533 struct stat tmpstatbuf;
3538 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3540 while (unix[len-1] == '/') len--; /* Cosmetic */
3541 sv_usepvn(libdir,unix,len);
3544 PerlIO_printf(Perl_error_log,
3545 "Failed to unixify @INC element \"%s\"\n",
3549 #ifdef MACOS_TRADITIONAL
3550 #define PERL_AV_SUFFIX_FMT ""
3551 #define PERL_ARCH_FMT ":%s"
3553 #define PERL_AV_SUFFIX_FMT "/"
3554 #define PERL_ARCH_FMT "/%s"
3556 /* .../version/archname if -d .../version/archname */
3557 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT PERL_ARCH_FMT,
3559 (int)PERL_REVISION, (int)PERL_VERSION,
3560 (int)PERL_SUBVERSION, ARCHNAME);
3561 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3562 S_ISDIR(tmpstatbuf.st_mode))
3563 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3565 /* .../version if -d .../version */
3566 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT, libdir,
3567 (int)PERL_REVISION, (int)PERL_VERSION,
3568 (int)PERL_SUBVERSION);
3569 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3570 S_ISDIR(tmpstatbuf.st_mode))
3571 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3573 /* .../archname if -d .../archname */
3574 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3575 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3576 S_ISDIR(tmpstatbuf.st_mode))
3577 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3580 #ifdef PERL_INC_VERSION_LIST
3582 for (incver = incverlist; *incver; incver++) {
3583 /* .../xxx if -d .../xxx */
3584 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3585 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3586 S_ISDIR(tmpstatbuf.st_mode))
3587 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3593 /* finally push this lib directory on the end of @INC */
3594 av_push(GvAVn(PL_incgv), libdir);
3599 STATIC struct perl_thread *
3600 S_init_main_thread(pTHX)
3602 #if !defined(PERL_IMPLICIT_CONTEXT)
3603 struct perl_thread *thr;
3607 Newz(53, thr, 1, struct perl_thread);
3608 PL_curcop = &PL_compiling;
3609 thr->interp = PERL_GET_INTERP;
3610 thr->cvcache = newHV();
3611 thr->threadsv = newAV();
3612 /* thr->threadsvp is set when find_threadsv is called */
3613 thr->specific = newAV();
3614 thr->flags = THRf_R_JOINABLE;
3615 MUTEX_INIT(&thr->mutex);
3616 /* Handcraft thrsv similarly to mess_sv */
3617 New(53, PL_thrsv, 1, SV);
3618 Newz(53, xpv, 1, XPV);
3619 SvFLAGS(PL_thrsv) = SVt_PV;
3620 SvANY(PL_thrsv) = (void*)xpv;
3621 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3622 SvPVX(PL_thrsv) = (char*)thr;
3623 SvCUR_set(PL_thrsv, sizeof(thr));
3624 SvLEN_set(PL_thrsv, sizeof(thr));
3625 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3626 thr->oursv = PL_thrsv;
3627 PL_chopset = " \n-";
3630 MUTEX_LOCK(&PL_threads_mutex);
3635 MUTEX_UNLOCK(&PL_threads_mutex);
3637 #ifdef HAVE_THREAD_INTERN
3638 Perl_init_thread_intern(thr);
3641 #ifdef SET_THREAD_SELF
3642 SET_THREAD_SELF(thr);
3644 thr->self = pthread_self();
3645 #endif /* SET_THREAD_SELF */
3649 * These must come after the SET_THR because sv_setpvn does
3650 * SvTAINT and the taint fields require dTHR.
3652 PL_toptarget = NEWSV(0,0);
3653 sv_upgrade(PL_toptarget, SVt_PVFM);
3654 sv_setpvn(PL_toptarget, "", 0);
3655 PL_bodytarget = NEWSV(0,0);
3656 sv_upgrade(PL_bodytarget, SVt_PVFM);
3657 sv_setpvn(PL_bodytarget, "", 0);
3658 PL_formtarget = PL_bodytarget;
3659 thr->errsv = newSVpvn("", 0);
3660 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3663 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3664 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3665 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3666 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3667 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3669 PL_reginterp_cnt = 0;
3673 #endif /* USE_THREADS */
3676 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3680 line_t oldline = CopLINE(PL_curcop);
3686 while (AvFILL(paramList) >= 0) {
3687 cv = (CV*)av_shift(paramList);
3689 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3690 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3696 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3700 (void)SvPV(atsv, len);
3703 PL_curcop = &PL_compiling;
3704 CopLINE_set(PL_curcop, oldline);
3705 if (paramList == PL_beginav)
3706 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3708 Perl_sv_catpvf(aTHX_ atsv,
3709 "%s failed--call queue aborted",
3710 paramList == PL_checkav ? "CHECK"
3711 : paramList == PL_initav ? "INIT"
3713 while (PL_scopestack_ix > oldscope)
3716 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3723 /* my_exit() was called */
3724 while (PL_scopestack_ix > oldscope)
3727 PL_curstash = PL_defstash;
3728 PL_curcop = &PL_compiling;
3729 CopLINE_set(PL_curcop, oldline);
3731 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3732 if (paramList == PL_beginav)
3733 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3735 Perl_croak(aTHX_ "%s failed--call queue aborted",
3736 paramList == PL_checkav ? "CHECK"
3737 : paramList == PL_initav ? "INIT"
3744 PL_curcop = &PL_compiling;
3745 CopLINE_set(PL_curcop, oldline);
3748 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3756 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3758 S_vcall_list_body(pTHX_ va_list args)
3760 CV *cv = va_arg(args, CV*);
3761 return call_list_body(cv);
3766 S_call_list_body(pTHX_ CV *cv)
3768 PUSHMARK(PL_stack_sp);
3769 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3774 Perl_my_exit(pTHX_ U32 status)
3778 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3779 thr, (unsigned long) status));
3788 STATUS_NATIVE_SET(status);
3795 Perl_my_failure_exit(pTHX)
3798 if (vaxc$errno & 1) {
3799 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3800 STATUS_NATIVE_SET(44);
3803 if (!vaxc$errno && errno) /* unlikely */
3804 STATUS_NATIVE_SET(44);
3806 STATUS_NATIVE_SET(vaxc$errno);
3811 STATUS_POSIX_SET(errno);
3813 exitstatus = STATUS_POSIX >> 8;
3814 if (exitstatus & 255)
3815 STATUS_POSIX_SET(exitstatus);
3817 STATUS_POSIX_SET(255);
3824 S_my_exit_jump(pTHX)
3827 register PERL_CONTEXT *cx;
3832 SvREFCNT_dec(PL_e_script);
3833 PL_e_script = Nullsv;
3836 POPSTACK_TO(PL_mainstack);
3837 if (cxstack_ix >= 0) {
3840 POPBLOCK(cx,PL_curpm);
3852 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3855 p = SvPVX(PL_e_script);
3856 nl = strchr(p, '\n');
3857 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3859 filter_del(read_e_script);
3862 sv_catpvn(buf_sv, p, nl-p);
3863 sv_chop(PL_e_script, nl);