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 if (*s == ':' || *s == '=') {
2064 my_setenv("PERL5DB", Perl_form(aTHX_ "use Devel::%s;", ++s));
2068 PL_perldb = PERLDB_ALL;
2076 if (isALPHA(s[1])) {
2077 static char debopts[] = "psltocPmfrxuLHXDS";
2080 for (s++; *s && (d = strchr(debopts,*s)); s++)
2081 PL_debug |= 1 << (d - debopts);
2084 PL_debug = atoi(s+1);
2085 for (s++; isDIGIT(*s); s++) ;
2087 PL_debug |= 0x80000000;
2090 if (ckWARN_d(WARN_DEBUGGING))
2091 Perl_warner(aTHX_ WARN_DEBUGGING,
2092 "Recompile perl with -DDEBUGGING to use -D switch\n");
2093 for (s++; isALNUM(*s); s++) ;
2099 usage(PL_origargv[0]);
2103 Safefree(PL_inplace);
2104 PL_inplace = savepv(s+1);
2106 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2109 if (*s == '-') /* Additional switches on #! line. */
2113 case 'I': /* -I handled both here and in parse_perl() */
2116 while (*s && isSPACE(*s))
2121 /* ignore trailing spaces (possibly followed by other switches) */
2123 for (e = p; *e && !isSPACE(*e); e++) ;
2127 } while (*p && *p != '-');
2128 e = savepvn(s, e-s);
2129 incpush(e, TRUE, TRUE);
2136 Perl_croak(aTHX_ "No directory specified for -I");
2144 PL_ors = savepv("\n");
2146 numlen = 0; /* disallow underscores */
2147 *PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2152 if (RsPARA(PL_nrs)) {
2157 PL_ors = SvPV(PL_nrs, PL_orslen);
2158 PL_ors = savepvn(PL_ors, PL_orslen);
2162 forbid_setid("-M"); /* XXX ? */
2165 forbid_setid("-m"); /* XXX ? */
2170 /* -M-foo == 'no foo' */
2171 if (*s == '-') { use = "no "; ++s; }
2172 sv = newSVpv(use,0);
2174 /* We allow -M'Module qw(Foo Bar)' */
2175 while(isALNUM(*s) || *s==':') ++s;
2177 sv_catpv(sv, start);
2178 if (*(start-1) == 'm') {
2180 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2181 sv_catpv( sv, " ()");
2185 Perl_croak(aTHX_ "Module name required with -%c option",
2187 sv_catpvn(sv, start, s-start);
2188 sv_catpv(sv, " split(/,/,q{");
2194 PL_preambleav = newAV();
2195 av_push(PL_preambleav, sv);
2198 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2210 PL_doswitches = TRUE;
2215 Perl_croak(aTHX_ "Too late for \"-T\" option");
2219 #ifdef MACOS_TRADITIONAL
2220 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2222 PL_do_undump = TRUE;
2230 PerlIO_printf(PerlIO_stdout(),
2231 Perl_form(aTHX_ "\nThis is perl, v%vd built for %s",
2232 PL_patchlevel, ARCHNAME));
2233 #if defined(LOCAL_PATCH_COUNT)
2234 if (LOCAL_PATCH_COUNT > 0)
2235 PerlIO_printf(PerlIO_stdout(),
2236 "\n(with %d registered patch%s, "
2237 "see perl -V for more detail)",
2238 (int)LOCAL_PATCH_COUNT,
2239 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2242 PerlIO_printf(PerlIO_stdout(),
2243 "\n\nCopyright 1987-2000, Larry Wall\n");
2245 PerlIO_printf(PerlIO_stdout(),
2246 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2249 PerlIO_printf(PerlIO_stdout(),
2250 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2251 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2254 PerlIO_printf(PerlIO_stdout(),
2255 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2256 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2259 PerlIO_printf(PerlIO_stdout(),
2260 "atariST series port, ++jrb bammi@cadence.com\n");
2263 PerlIO_printf(PerlIO_stdout(),
2264 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2267 PerlIO_printf(PerlIO_stdout(),
2268 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
2271 PerlIO_printf(PerlIO_stdout(),
2272 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2275 PerlIO_printf(PerlIO_stdout(),
2276 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2279 PerlIO_printf(PerlIO_stdout(),
2280 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2283 PerlIO_printf(PerlIO_stdout(),
2284 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2287 PerlIO_printf(PerlIO_stdout(),
2288 "MiNT port by Guido Flohr, 1997-1999\n");
2291 PerlIO_printf(PerlIO_stdout(),
2292 "EPOC port by Olaf Flebbe, 1999-2000\n");
2294 #ifdef BINARY_BUILD_NOTICE
2295 BINARY_BUILD_NOTICE;
2297 PerlIO_printf(PerlIO_stdout(),
2299 Perl may be copied only under the terms of either the Artistic License or the\n\
2300 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
2301 Complete documentation for Perl, including FAQ lists, should be found on\n\
2302 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2303 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2306 if (! (PL_dowarn & G_WARN_ALL_MASK))
2307 PL_dowarn |= G_WARN_ON;
2311 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2312 PL_compiling.cop_warnings = pWARN_ALL ;
2316 PL_dowarn = G_WARN_ALL_OFF;
2317 PL_compiling.cop_warnings = pWARN_NONE ;
2322 if (s[1] == '-') /* Additional switches on #! line. */
2327 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2333 #ifdef ALTERNATE_SHEBANG
2334 case 'S': /* OS/2 needs -S on "extproc" line. */
2342 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2347 /* compliments of Tom Christiansen */
2349 /* unexec() can be found in the Gnu emacs distribution */
2350 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2353 Perl_my_unexec(pTHX)
2361 prog = newSVpv(BIN_EXP, 0);
2362 sv_catpv(prog, "/perl");
2363 file = newSVpv(PL_origfilename, 0);
2364 sv_catpv(file, ".perldump");
2366 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2367 /* unexec prints msg to stderr in case of failure */
2368 PerlProc_exit(status);
2371 # include <lib$routines.h>
2372 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2374 ABORT(); /* for use with undump */
2379 /* initialize curinterp */
2384 #ifdef PERL_OBJECT /* XXX kludge */
2387 PL_chopset = " \n-"; \
2388 PL_copline = NOLINE; \
2389 PL_curcop = &PL_compiling;\
2390 PL_curcopdb = NULL; \
2392 PL_dumpindent = 4; \
2393 PL_laststatval = -1; \
2394 PL_laststype = OP_STAT; \
2395 PL_maxscream = -1; \
2396 PL_maxsysfd = MAXSYSFD; \
2397 PL_statname = Nullsv; \
2398 PL_tmps_floor = -1; \
2400 PL_op_mask = NULL; \
2401 PL_laststatval = -1; \
2402 PL_laststype = OP_STAT; \
2403 PL_mess_sv = Nullsv; \
2404 PL_splitstr = " "; \
2405 PL_generation = 100; \
2406 PL_exitlist = NULL; \
2407 PL_exitlistlen = 0; \
2409 PL_in_clean_objs = FALSE; \
2410 PL_in_clean_all = FALSE; \
2411 PL_profiledata = NULL; \
2413 PL_rsfp_filters = Nullav; \
2418 # ifdef MULTIPLICITY
2419 # define PERLVAR(var,type)
2420 # define PERLVARA(var,n,type)
2421 # if defined(PERL_IMPLICIT_CONTEXT)
2422 # if defined(USE_THREADS)
2423 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2424 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2425 # else /* !USE_THREADS */
2426 # define PERLVARI(var,type,init) aTHX->var = init;
2427 # define PERLVARIC(var,type,init) aTHX->var = init;
2428 # endif /* USE_THREADS */
2430 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2431 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2433 # include "intrpvar.h"
2434 # ifndef USE_THREADS
2435 # include "thrdvar.h"
2442 # define PERLVAR(var,type)
2443 # define PERLVARA(var,n,type)
2444 # define PERLVARI(var,type,init) PL_##var = init;
2445 # define PERLVARIC(var,type,init) PL_##var = init;
2446 # include "intrpvar.h"
2447 # ifndef USE_THREADS
2448 # include "thrdvar.h"
2460 S_init_main_stash(pTHX)
2465 /* Note that strtab is a rather special HV. Assumptions are made
2466 about not iterating on it, and not adding tie magic to it.
2467 It is properly deallocated in perl_destruct() */
2468 PL_strtab = newHV();
2470 MUTEX_INIT(&PL_strtab_mutex);
2472 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2473 hv_ksplit(PL_strtab, 512);
2475 PL_curstash = PL_defstash = newHV();
2476 PL_curstname = newSVpvn("main",4);
2477 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2478 SvREFCNT_dec(GvHV(gv));
2479 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2481 HvNAME(PL_defstash) = savepv("main");
2482 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2483 GvMULTI_on(PL_incgv);
2484 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2485 GvMULTI_on(PL_hintgv);
2486 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2487 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2488 GvMULTI_on(PL_errgv);
2489 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2490 GvMULTI_on(PL_replgv);
2491 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2492 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2493 sv_setpvn(ERRSV, "", 0);
2494 PL_curstash = PL_defstash;
2495 CopSTASH_set(&PL_compiling, PL_defstash);
2496 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2497 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2498 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2499 /* We must init $/ before switches are processed. */
2500 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2504 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2511 PL_origfilename = savepv("-e");
2514 /* if find_script() returns, it returns a malloc()-ed value */
2515 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2517 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2518 char *s = scriptname + 8;
2519 *fdscript = atoi(s);
2523 scriptname = savepv(s + 1);
2524 Safefree(PL_origfilename);
2525 PL_origfilename = scriptname;
2531 Safefree(CopFILE(PL_curcop));
2533 SvREFCNT_dec(CopFILEGV(PL_curcop));
2535 CopFILE_set(PL_curcop, PL_origfilename);
2536 if (strEQ(PL_origfilename,"-"))
2538 if (*fdscript >= 0) {
2539 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2540 #if defined(HAS_FCNTL) && defined(F_SETFD)
2542 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2545 else if (PL_preprocess) {
2546 char *cpp_cfg = CPPSTDIN;
2547 SV *cpp = newSVpvn("",0);
2548 SV *cmd = NEWSV(0,0);
2550 if (strEQ(cpp_cfg, "cppstdin"))
2551 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2552 sv_catpv(cpp, cpp_cfg);
2554 sv_catpvn(sv, "-I", 2);
2555 sv_catpv(sv,PRIVLIB_EXP);
2557 #if defined(MSDOS) || defined(WIN32)
2558 Perl_sv_setpvf(aTHX_ cmd, "\
2559 sed %s -e \"/^[^#]/b\" \
2560 -e \"/^#[ ]*include[ ]/b\" \
2561 -e \"/^#[ ]*define[ ]/b\" \
2562 -e \"/^#[ ]*if[ ]/b\" \
2563 -e \"/^#[ ]*ifdef[ ]/b\" \
2564 -e \"/^#[ ]*ifndef[ ]/b\" \
2565 -e \"/^#[ ]*else/b\" \
2566 -e \"/^#[ ]*elif[ ]/b\" \
2567 -e \"/^#[ ]*undef[ ]/b\" \
2568 -e \"/^#[ ]*endif/b\" \
2570 %s | %"SVf" -C %"SVf" %s",
2571 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2574 Perl_sv_setpvf(aTHX_ cmd, "\
2575 %s %s -e '/^[^#]/b' \
2576 -e '/^#[ ]*include[ ]/b' \
2577 -e '/^#[ ]*define[ ]/b' \
2578 -e '/^#[ ]*if[ ]/b' \
2579 -e '/^#[ ]*ifdef[ ]/b' \
2580 -e '/^#[ ]*ifndef[ ]/b' \
2581 -e '/^#[ ]*else/b' \
2582 -e '/^#[ ]*elif[ ]/b' \
2583 -e '/^#[ ]*undef[ ]/b' \
2584 -e '/^#[ ]*endif/b' \
2586 %s | %"SVf" %"SVf" %s",
2588 Perl_sv_setpvf(aTHX_ cmd, "\
2589 %s %s -e '/^[^#]/b' \
2590 -e '/^#[ ]*include[ ]/b' \
2591 -e '/^#[ ]*define[ ]/b' \
2592 -e '/^#[ ]*if[ ]/b' \
2593 -e '/^#[ ]*ifdef[ ]/b' \
2594 -e '/^#[ ]*ifndef[ ]/b' \
2595 -e '/^#[ ]*else/b' \
2596 -e '/^#[ ]*elif[ ]/b' \
2597 -e '/^#[ ]*undef[ ]/b' \
2598 -e '/^#[ ]*endif/b' \
2600 %s | %"SVf" -C %"SVf" %s",
2607 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2609 scriptname, cpp, sv, CPPMINUS);
2610 PL_doextract = FALSE;
2611 #ifdef IAMSUID /* actually, this is caught earlier */
2612 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2614 (void)seteuid(PL_uid); /* musn't stay setuid root */
2617 (void)setreuid((Uid_t)-1, PL_uid);
2619 #ifdef HAS_SETRESUID
2620 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2622 PerlProc_setuid(PL_uid);
2626 if (PerlProc_geteuid() != PL_uid)
2627 Perl_croak(aTHX_ "Can't do seteuid!\n");
2629 #endif /* IAMSUID */
2630 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2634 else if (!*scriptname) {
2635 forbid_setid("program input from stdin");
2636 PL_rsfp = PerlIO_stdin();
2639 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2640 #if defined(HAS_FCNTL) && defined(F_SETFD)
2642 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2647 #ifndef IAMSUID /* in case script is not readable before setuid */
2649 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2650 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2653 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2654 (int)PERL_REVISION, (int)PERL_VERSION,
2655 (int)PERL_SUBVERSION), PL_origargv);
2656 Perl_croak(aTHX_ "Can't do setuid\n");
2660 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2661 CopFILE(PL_curcop), Strerror(errno));
2666 * I_SYSSTATVFS HAS_FSTATVFS
2668 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2669 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2670 * here so that metaconfig picks them up. */
2674 S_fd_on_nosuid_fs(pTHX_ int fd)
2676 int check_okay = 0; /* able to do all the required sys/libcalls */
2677 int on_nosuid = 0; /* the fd is on a nosuid fs */
2679 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2680 * fstatvfs() is UNIX98.
2681 * fstatfs() is 4.3 BSD.
2682 * ustat()+getmnt() is pre-4.3 BSD.
2683 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2684 * an irrelevant filesystem while trying to reach the right one.
2687 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2689 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2690 defined(HAS_FSTATVFS)
2691 # define FD_ON_NOSUID_CHECK_OKAY
2692 struct statvfs stfs;
2694 check_okay = fstatvfs(fd, &stfs) == 0;
2695 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2696 # endif /* fstatvfs */
2698 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2699 defined(PERL_MOUNT_NOSUID) && \
2700 defined(HAS_FSTATFS) && \
2701 defined(HAS_STRUCT_STATFS) && \
2702 defined(HAS_STRUCT_STATFS_F_FLAGS)
2703 # define FD_ON_NOSUID_CHECK_OKAY
2706 check_okay = fstatfs(fd, &stfs) == 0;
2707 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2708 # endif /* fstatfs */
2710 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2711 defined(PERL_MOUNT_NOSUID) && \
2712 defined(HAS_FSTAT) && \
2713 defined(HAS_USTAT) && \
2714 defined(HAS_GETMNT) && \
2715 defined(HAS_STRUCT_FS_DATA) && \
2717 # define FD_ON_NOSUID_CHECK_OKAY
2720 if (fstat(fd, &fdst) == 0) {
2722 if (ustat(fdst.st_dev, &us) == 0) {
2724 /* NOSTAT_ONE here because we're not examining fields which
2725 * vary between that case and STAT_ONE. */
2726 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2727 size_t cmplen = sizeof(us.f_fname);
2728 if (sizeof(fsd.fd_req.path) < cmplen)
2729 cmplen = sizeof(fsd.fd_req.path);
2730 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2731 fdst.st_dev == fsd.fd_req.dev) {
2733 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2739 # endif /* fstat+ustat+getmnt */
2741 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2742 defined(HAS_GETMNTENT) && \
2743 defined(HAS_HASMNTOPT) && \
2744 defined(MNTOPT_NOSUID)
2745 # define FD_ON_NOSUID_CHECK_OKAY
2746 FILE *mtab = fopen("/etc/mtab", "r");
2747 struct mntent *entry;
2748 struct stat stb, fsb;
2750 if (mtab && (fstat(fd, &stb) == 0)) {
2751 while (entry = getmntent(mtab)) {
2752 if (stat(entry->mnt_dir, &fsb) == 0
2753 && fsb.st_dev == stb.st_dev)
2755 /* found the filesystem */
2757 if (hasmntopt(entry, MNTOPT_NOSUID))
2760 } /* A single fs may well fail its stat(). */
2765 # endif /* getmntent+hasmntopt */
2768 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2771 #endif /* IAMSUID */
2774 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2780 /* do we need to emulate setuid on scripts? */
2782 /* This code is for those BSD systems that have setuid #! scripts disabled
2783 * in the kernel because of a security problem. Merely defining DOSUID
2784 * in perl will not fix that problem, but if you have disabled setuid
2785 * scripts in the kernel, this will attempt to emulate setuid and setgid
2786 * on scripts that have those now-otherwise-useless bits set. The setuid
2787 * root version must be called suidperl or sperlN.NNN. If regular perl
2788 * discovers that it has opened a setuid script, it calls suidperl with
2789 * the same argv that it had. If suidperl finds that the script it has
2790 * just opened is NOT setuid root, it sets the effective uid back to the
2791 * uid. We don't just make perl setuid root because that loses the
2792 * effective uid we had before invoking perl, if it was different from the
2795 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2796 * be defined in suidperl only. suidperl must be setuid root. The
2797 * Configure script will set this up for you if you want it.
2804 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2805 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2806 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2811 #ifndef HAS_SETREUID
2812 /* On this access check to make sure the directories are readable,
2813 * there is actually a small window that the user could use to make
2814 * filename point to an accessible directory. So there is a faint
2815 * chance that someone could execute a setuid script down in a
2816 * non-accessible directory. I don't know what to do about that.
2817 * But I don't think it's too important. The manual lies when
2818 * it says access() is useful in setuid programs.
2820 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2821 Perl_croak(aTHX_ "Permission denied");
2823 /* If we can swap euid and uid, then we can determine access rights
2824 * with a simple stat of the file, and then compare device and
2825 * inode to make sure we did stat() on the same file we opened.
2826 * Then we just have to make sure he or she can execute it.
2829 struct stat tmpstatbuf;
2833 setreuid(PL_euid,PL_uid) < 0
2836 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2839 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2840 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2841 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2842 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2843 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2844 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2845 Perl_croak(aTHX_ "Permission denied");
2847 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2848 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2849 (void)PerlIO_close(PL_rsfp);
2850 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2851 PerlIO_printf(PL_rsfp,
2852 "User %"Uid_t_f" tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2853 (Filename of set-id script was %s, uid %"Uid_t_f" gid %"Gid_t_f".)\n\nSincerely,\nperl\n",
2854 PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2855 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
2857 PL_statbuf.st_uid, PL_statbuf.st_gid);
2858 (void)PerlProc_pclose(PL_rsfp);
2860 Perl_croak(aTHX_ "Permission denied\n");
2864 setreuid(PL_uid,PL_euid) < 0
2866 # if defined(HAS_SETRESUID)
2867 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2870 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2871 Perl_croak(aTHX_ "Can't reswap uid and euid");
2872 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2873 Perl_croak(aTHX_ "Permission denied\n");
2875 #endif /* HAS_SETREUID */
2876 #endif /* IAMSUID */
2878 if (!S_ISREG(PL_statbuf.st_mode))
2879 Perl_croak(aTHX_ "Permission denied");
2880 if (PL_statbuf.st_mode & S_IWOTH)
2881 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2882 PL_doswitches = FALSE; /* -s is insecure in suid */
2883 CopLINE_inc(PL_curcop);
2884 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2885 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2886 Perl_croak(aTHX_ "No #! line");
2887 s = SvPV(PL_linestr,n_a)+2;
2889 while (!isSPACE(*s)) s++;
2890 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2891 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2892 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2893 Perl_croak(aTHX_ "Not a perl script");
2894 while (*s == ' ' || *s == '\t') s++;
2896 * #! arg must be what we saw above. They can invoke it by
2897 * mentioning suidperl explicitly, but they may not add any strange
2898 * arguments beyond what #! says if they do invoke suidperl that way.
2900 len = strlen(validarg);
2901 if (strEQ(validarg," PHOOEY ") ||
2902 strnNE(s,validarg,len) || !isSPACE(s[len]))
2903 Perl_croak(aTHX_ "Args must match #! line");
2906 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2907 PL_euid == PL_statbuf.st_uid)
2909 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2910 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2911 #endif /* IAMSUID */
2913 if (PL_euid) { /* oops, we're not the setuid root perl */
2914 (void)PerlIO_close(PL_rsfp);
2917 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2918 (int)PERL_REVISION, (int)PERL_VERSION,
2919 (int)PERL_SUBVERSION), PL_origargv);
2921 Perl_croak(aTHX_ "Can't do setuid\n");
2924 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2926 (void)setegid(PL_statbuf.st_gid);
2929 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2931 #ifdef HAS_SETRESGID
2932 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2934 PerlProc_setgid(PL_statbuf.st_gid);
2938 if (PerlProc_getegid() != PL_statbuf.st_gid)
2939 Perl_croak(aTHX_ "Can't do setegid!\n");
2941 if (PL_statbuf.st_mode & S_ISUID) {
2942 if (PL_statbuf.st_uid != PL_euid)
2944 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2947 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2949 #ifdef HAS_SETRESUID
2950 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2952 PerlProc_setuid(PL_statbuf.st_uid);
2956 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2957 Perl_croak(aTHX_ "Can't do seteuid!\n");
2959 else if (PL_uid) { /* oops, mustn't run as root */
2961 (void)seteuid((Uid_t)PL_uid);
2964 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2966 #ifdef HAS_SETRESUID
2967 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2969 PerlProc_setuid((Uid_t)PL_uid);
2973 if (PerlProc_geteuid() != PL_uid)
2974 Perl_croak(aTHX_ "Can't do seteuid!\n");
2977 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2978 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
2981 else if (PL_preprocess)
2982 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
2983 else if (fdscript >= 0)
2984 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
2986 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
2988 /* We absolutely must clear out any saved ids here, so we */
2989 /* exec the real perl, substituting fd script for scriptname. */
2990 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2991 PerlIO_rewind(PL_rsfp);
2992 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2993 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2994 if (!PL_origargv[which])
2995 Perl_croak(aTHX_ "Permission denied");
2996 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
2997 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
2998 #if defined(HAS_FCNTL) && defined(F_SETFD)
2999 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3001 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3002 (int)PERL_REVISION, (int)PERL_VERSION,
3003 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3004 Perl_croak(aTHX_ "Can't do setuid\n");
3005 #endif /* IAMSUID */
3007 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3008 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3010 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3011 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3013 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3016 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3017 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3018 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3019 /* not set-id, must be wrapped */
3025 S_find_beginning(pTHX)
3027 register char *s, *s2;
3029 /* skip forward in input to the real script? */
3032 #ifdef MACOS_TRADITIONAL
3033 /* Since the Mac OS does not honor !# arguments for us, we do it ourselves */
3035 while (PL_doextract || gMacPerl_AlwaysExtract) {
3036 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3037 if (!gMacPerl_AlwaysExtract)
3038 Perl_croak(aTHX_ "No Perl script found in input\n");
3040 if (PL_doextract) /* require explicit override ? */
3041 if (!OverrideExtract(PL_origfilename))
3042 Perl_croak(aTHX_ "User aborted script\n");
3044 PL_doextract = FALSE;
3046 /* Pater peccavi, file does not have #! */
3047 PerlIO_rewind(PL_rsfp);
3052 while (PL_doextract) {
3053 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3054 Perl_croak(aTHX_ "No Perl script found in input\n");
3056 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3057 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3058 PL_doextract = FALSE;
3059 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3061 while (*s == ' ' || *s == '\t') s++;
3063 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3064 if (strnEQ(s2-4,"perl",4))
3066 while ((s = moreswitches(s)))
3077 PL_uid = PerlProc_getuid();
3078 PL_euid = PerlProc_geteuid();
3079 PL_gid = PerlProc_getgid();
3080 PL_egid = PerlProc_getegid();
3082 PL_uid |= PL_gid << 16;
3083 PL_euid |= PL_egid << 16;
3085 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3089 S_forbid_setid(pTHX_ char *s)
3091 if (PL_euid != PL_uid)
3092 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3093 if (PL_egid != PL_gid)
3094 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3098 Perl_init_debugger(pTHX)
3101 HV *ostash = PL_curstash;
3103 PL_curstash = PL_debstash;
3104 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3105 AvREAL_off(PL_dbargs);
3106 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3107 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3108 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3109 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3110 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3111 sv_setiv(PL_DBsingle, 0);
3112 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3113 sv_setiv(PL_DBtrace, 0);
3114 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3115 sv_setiv(PL_DBsignal, 0);
3116 PL_curstash = ostash;
3119 #ifndef STRESS_REALLOC
3120 #define REASONABLE(size) (size)
3122 #define REASONABLE(size) (1) /* unreasonable */
3126 Perl_init_stacks(pTHX)
3128 /* start with 128-item stack and 8K cxstack */
3129 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3130 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3131 PL_curstackinfo->si_type = PERLSI_MAIN;
3132 PL_curstack = PL_curstackinfo->si_stack;
3133 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3135 PL_stack_base = AvARRAY(PL_curstack);
3136 PL_stack_sp = PL_stack_base;
3137 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3139 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3142 PL_tmps_max = REASONABLE(128);
3144 New(54,PL_markstack,REASONABLE(32),I32);
3145 PL_markstack_ptr = PL_markstack;
3146 PL_markstack_max = PL_markstack + REASONABLE(32);
3150 New(54,PL_scopestack,REASONABLE(32),I32);
3151 PL_scopestack_ix = 0;
3152 PL_scopestack_max = REASONABLE(32);
3154 New(54,PL_savestack,REASONABLE(128),ANY);
3155 PL_savestack_ix = 0;
3156 PL_savestack_max = REASONABLE(128);
3158 New(54,PL_retstack,REASONABLE(16),OP*);
3160 PL_retstack_max = REASONABLE(16);
3169 while (PL_curstackinfo->si_next)
3170 PL_curstackinfo = PL_curstackinfo->si_next;
3171 while (PL_curstackinfo) {
3172 PERL_SI *p = PL_curstackinfo->si_prev;
3173 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3174 Safefree(PL_curstackinfo->si_cxstack);
3175 Safefree(PL_curstackinfo);
3176 PL_curstackinfo = p;
3178 Safefree(PL_tmps_stack);
3179 Safefree(PL_markstack);
3180 Safefree(PL_scopestack);
3181 Safefree(PL_savestack);
3182 Safefree(PL_retstack);
3186 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3197 lex_start(PL_linestr);
3199 PL_subname = newSVpvn("main",4);
3203 S_init_predump_symbols(pTHX)
3209 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3210 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3211 GvMULTI_on(PL_stdingv);
3212 io = GvIOp(PL_stdingv);
3213 IoIFP(io) = PerlIO_stdin();
3214 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3216 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3218 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3221 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3223 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3225 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3227 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3228 GvMULTI_on(PL_stderrgv);
3229 io = GvIOp(PL_stderrgv);
3230 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3231 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3233 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3235 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3238 Safefree(PL_osname);
3239 PL_osname = savepv(OSNAME);
3243 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3250 argc--,argv++; /* skip name of script */
3251 if (PL_doswitches) {
3252 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3255 if (argv[0][1] == '-' && !argv[0][2]) {
3259 if ((s = strchr(argv[0], '='))) {
3261 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3264 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3267 PL_toptarget = NEWSV(0,0);
3268 sv_upgrade(PL_toptarget, SVt_PVFM);
3269 sv_setpvn(PL_toptarget, "", 0);
3270 PL_bodytarget = NEWSV(0,0);
3271 sv_upgrade(PL_bodytarget, SVt_PVFM);
3272 sv_setpvn(PL_bodytarget, "", 0);
3273 PL_formtarget = PL_bodytarget;
3276 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3277 #ifdef MACOS_TRADITIONAL
3278 /* $0 is not majick on a Mac */
3279 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3281 sv_setpv(GvSV(tmpgv),PL_origfilename);
3282 magicname("0", "0", 1);
3285 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3287 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3289 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3291 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3292 GvMULTI_on(PL_argvgv);
3293 (void)gv_AVadd(PL_argvgv);
3294 av_clear(GvAVn(PL_argvgv));
3295 for (; argc > 0; argc--,argv++) {
3296 SV *sv = newSVpv(argv[0],0);
3297 av_push(GvAVn(PL_argvgv),sv);
3298 if (PL_widesyscalls)
3299 (void)sv_utf8_decode(sv);
3302 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3304 GvMULTI_on(PL_envgv);
3305 hv = GvHVn(PL_envgv);
3306 hv_magic(hv, PL_envgv, 'E');
3307 #if !defined( VMS) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) /* VMS doesn't have environ array */
3308 /* Note that if the supplied env parameter is actually a copy
3309 of the global environ then it may now point to free'd memory
3310 if the environment has been modified since. To avoid this
3311 problem we treat env==NULL as meaning 'use the default'
3316 environ[0] = Nullch;
3317 for (; *env; env++) {
3318 if (!(s = strchr(*env,'=')))
3324 sv = newSVpv(s--,0);
3325 (void)hv_store(hv, *env, s - *env, sv, 0);
3327 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3328 /* Sins of the RTL. See note in my_setenv(). */
3329 (void)PerlEnv_putenv(savepv(*env));
3333 #ifdef DYNAMIC_ENV_FETCH
3334 HvNAME(hv) = savepv(ENV_HV_NAME);
3338 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3339 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3343 S_init_perllib(pTHX)
3348 s = PerlEnv_getenv("PERL5LIB");
3350 incpush(s, TRUE, TRUE);
3352 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3354 /* Treat PERL5?LIB as a possible search list logical name -- the
3355 * "natural" VMS idiom for a Unix path string. We allow each
3356 * element to be a set of |-separated directories for compatibility.
3360 if (my_trnlnm("PERL5LIB",buf,0))
3361 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3363 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3367 /* Use the ~-expanded versions of APPLLIB (undocumented),
3368 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3371 incpush(APPLLIB_EXP, TRUE, TRUE);
3375 incpush(ARCHLIB_EXP, FALSE, FALSE);
3377 #ifdef MACOS_TRADITIONAL
3379 struct stat tmpstatbuf;
3380 SV * privdir = NEWSV(55, 0);
3381 char * macperl = PerlEnv_getenv("MACPERL");
3386 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3387 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3388 incpush(SvPVX(privdir), TRUE, FALSE);
3389 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3390 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3391 incpush(SvPVX(privdir), TRUE, FALSE);
3393 SvREFCNT_dec(privdir);
3396 incpush(":", FALSE, FALSE);
3399 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3402 incpush(PRIVLIB_EXP, TRUE, FALSE);
3404 incpush(PRIVLIB_EXP, FALSE, FALSE);
3408 /* sitearch is always relative to sitelib on Windows for
3409 * DLL-based path intuition to work correctly */
3410 # if !defined(WIN32)
3411 incpush(SITEARCH_EXP, FALSE, FALSE);
3417 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3419 incpush(SITELIB_EXP, FALSE, FALSE);
3423 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3424 incpush(SITELIB_STEM, FALSE, TRUE);
3427 #ifdef PERL_VENDORARCH_EXP
3428 /* vendorarch is always relative to vendorlib on Windows for
3429 * DLL-based path intuition to work correctly */
3430 # if !defined(WIN32)
3431 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3435 #ifdef PERL_VENDORLIB_EXP
3437 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3439 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3443 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3444 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3447 #ifdef PERL_OTHERLIBDIRS
3448 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3452 incpush(".", FALSE, FALSE);
3453 #endif /* MACOS_TRADITIONAL */
3457 # define PERLLIB_SEP ';'
3460 # define PERLLIB_SEP '|'
3462 # if defined(MACOS_TRADITIONAL)
3463 # define PERLLIB_SEP ','
3465 # define PERLLIB_SEP ':'
3469 #ifndef PERLLIB_MANGLE
3470 # define PERLLIB_MANGLE(s,n) (s)
3474 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3476 SV *subdir = Nullsv;
3481 if (addsubdirs || addoldvers) {
3482 subdir = sv_newmortal();
3485 /* Break at all separators */
3487 SV *libdir = NEWSV(55,0);
3490 /* skip any consecutive separators */
3491 while ( *p == PERLLIB_SEP ) {
3492 /* Uncomment the next line for PATH semantics */
3493 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3497 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3498 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3503 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3504 p = Nullch; /* break out */
3506 #ifdef MACOS_TRADITIONAL
3507 if (!strchr(SvPVX(libdir), ':'))
3508 sv_insert(libdir, 0, 0, ":", 1);
3509 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3510 sv_catpv(libdir, ":");
3514 * BEFORE pushing libdir onto @INC we may first push version- and
3515 * archname-specific sub-directories.
3517 if (addsubdirs || addoldvers) {
3518 #ifdef PERL_INC_VERSION_LIST
3519 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3520 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3521 const char **incver;
3523 struct stat tmpstatbuf;
3528 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3530 while (unix[len-1] == '/') len--; /* Cosmetic */
3531 sv_usepvn(libdir,unix,len);
3534 PerlIO_printf(Perl_error_log,
3535 "Failed to unixify @INC element \"%s\"\n",
3539 #ifdef MACOS_TRADITIONAL
3540 #define PERL_AV_SUFFIX_FMT ""
3541 #define PERL_ARCH_FMT ":%s"
3543 #define PERL_AV_SUFFIX_FMT "/"
3544 #define PERL_ARCH_FMT "/%s"
3546 /* .../version/archname if -d .../version/archname */
3547 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT PERL_ARCH_FMT,
3549 (int)PERL_REVISION, (int)PERL_VERSION,
3550 (int)PERL_SUBVERSION, ARCHNAME);
3551 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3552 S_ISDIR(tmpstatbuf.st_mode))
3553 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3555 /* .../version if -d .../version */
3556 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT, libdir,
3557 (int)PERL_REVISION, (int)PERL_VERSION,
3558 (int)PERL_SUBVERSION);
3559 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3560 S_ISDIR(tmpstatbuf.st_mode))
3561 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3563 /* .../archname if -d .../archname */
3564 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3565 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3566 S_ISDIR(tmpstatbuf.st_mode))
3567 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3570 #ifdef PERL_INC_VERSION_LIST
3572 for (incver = incverlist; *incver; incver++) {
3573 /* .../xxx if -d .../xxx */
3574 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3575 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3576 S_ISDIR(tmpstatbuf.st_mode))
3577 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3583 /* finally push this lib directory on the end of @INC */
3584 av_push(GvAVn(PL_incgv), libdir);
3589 STATIC struct perl_thread *
3590 S_init_main_thread(pTHX)
3592 #if !defined(PERL_IMPLICIT_CONTEXT)
3593 struct perl_thread *thr;
3597 Newz(53, thr, 1, struct perl_thread);
3598 PL_curcop = &PL_compiling;
3599 thr->interp = PERL_GET_INTERP;
3600 thr->cvcache = newHV();
3601 thr->threadsv = newAV();
3602 /* thr->threadsvp is set when find_threadsv is called */
3603 thr->specific = newAV();
3604 thr->flags = THRf_R_JOINABLE;
3605 MUTEX_INIT(&thr->mutex);
3606 /* Handcraft thrsv similarly to mess_sv */
3607 New(53, PL_thrsv, 1, SV);
3608 Newz(53, xpv, 1, XPV);
3609 SvFLAGS(PL_thrsv) = SVt_PV;
3610 SvANY(PL_thrsv) = (void*)xpv;
3611 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3612 SvPVX(PL_thrsv) = (char*)thr;
3613 SvCUR_set(PL_thrsv, sizeof(thr));
3614 SvLEN_set(PL_thrsv, sizeof(thr));
3615 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3616 thr->oursv = PL_thrsv;
3617 PL_chopset = " \n-";
3620 MUTEX_LOCK(&PL_threads_mutex);
3625 MUTEX_UNLOCK(&PL_threads_mutex);
3627 #ifdef HAVE_THREAD_INTERN
3628 Perl_init_thread_intern(thr);
3631 #ifdef SET_THREAD_SELF
3632 SET_THREAD_SELF(thr);
3634 thr->self = pthread_self();
3635 #endif /* SET_THREAD_SELF */
3639 * These must come after the SET_THR because sv_setpvn does
3640 * SvTAINT and the taint fields require dTHR.
3642 PL_toptarget = NEWSV(0,0);
3643 sv_upgrade(PL_toptarget, SVt_PVFM);
3644 sv_setpvn(PL_toptarget, "", 0);
3645 PL_bodytarget = NEWSV(0,0);
3646 sv_upgrade(PL_bodytarget, SVt_PVFM);
3647 sv_setpvn(PL_bodytarget, "", 0);
3648 PL_formtarget = PL_bodytarget;
3649 thr->errsv = newSVpvn("", 0);
3650 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3653 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3654 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3655 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3656 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3657 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3659 PL_reginterp_cnt = 0;
3663 #endif /* USE_THREADS */
3666 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3670 line_t oldline = CopLINE(PL_curcop);
3676 while (AvFILL(paramList) >= 0) {
3677 cv = (CV*)av_shift(paramList);
3678 if ((PL_minus_c & 0x10) && (paramList == PL_beginav)) {
3679 /* save PL_beginav for compiler */
3680 if (! PL_beginav_save)
3681 PL_beginav_save = newAV();
3682 av_push(PL_beginav_save, (SV*)cv);
3686 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3687 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3693 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3697 (void)SvPV(atsv, len);
3700 PL_curcop = &PL_compiling;
3701 CopLINE_set(PL_curcop, oldline);
3702 if (paramList == PL_beginav)
3703 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3705 Perl_sv_catpvf(aTHX_ atsv,
3706 "%s failed--call queue aborted",
3707 paramList == PL_checkav ? "CHECK"
3708 : paramList == PL_initav ? "INIT"
3710 while (PL_scopestack_ix > oldscope)
3713 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3720 /* my_exit() was called */
3721 while (PL_scopestack_ix > oldscope)
3724 PL_curstash = PL_defstash;
3725 PL_curcop = &PL_compiling;
3726 CopLINE_set(PL_curcop, oldline);
3728 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3729 if (paramList == PL_beginav)
3730 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3732 Perl_croak(aTHX_ "%s failed--call queue aborted",
3733 paramList == PL_checkav ? "CHECK"
3734 : paramList == PL_initav ? "INIT"
3741 PL_curcop = &PL_compiling;
3742 CopLINE_set(PL_curcop, oldline);
3745 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3753 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3755 S_vcall_list_body(pTHX_ va_list args)
3757 CV *cv = va_arg(args, CV*);
3758 return call_list_body(cv);
3763 S_call_list_body(pTHX_ CV *cv)
3765 PUSHMARK(PL_stack_sp);
3766 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3771 Perl_my_exit(pTHX_ U32 status)
3775 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3776 thr, (unsigned long) status));
3785 STATUS_NATIVE_SET(status);
3792 Perl_my_failure_exit(pTHX)
3795 if (vaxc$errno & 1) {
3796 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3797 STATUS_NATIVE_SET(44);
3800 if (!vaxc$errno && errno) /* unlikely */
3801 STATUS_NATIVE_SET(44);
3803 STATUS_NATIVE_SET(vaxc$errno);
3808 STATUS_POSIX_SET(errno);
3810 exitstatus = STATUS_POSIX >> 8;
3811 if (exitstatus & 255)
3812 STATUS_POSIX_SET(exitstatus);
3814 STATUS_POSIX_SET(255);
3821 S_my_exit_jump(pTHX)
3824 register PERL_CONTEXT *cx;
3829 SvREFCNT_dec(PL_e_script);
3830 PL_e_script = Nullsv;
3833 POPSTACK_TO(PL_mainstack);
3834 if (cxstack_ix >= 0) {
3837 POPBLOCK(cx,PL_curpm);
3849 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3852 p = SvPVX(PL_e_script);
3853 nl = strchr(p, '\n');
3854 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3856 filter_del(read_e_script);
3859 sv_catpvn(buf_sv, p, nl-p);
3860 sv_chop(PL_e_script, nl);