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 5.0 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);