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");
2244 #ifdef MACOS_TRADITIONAL
2245 PerlIO_printf(PerlIO_stdout(),
2246 "\nMacOS port Copyright (c) 1991-2000, Matthias Neeracher\n");
2249 PerlIO_printf(PerlIO_stdout(),
2250 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2253 PerlIO_printf(PerlIO_stdout(),
2254 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2255 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2258 PerlIO_printf(PerlIO_stdout(),
2259 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2260 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2263 PerlIO_printf(PerlIO_stdout(),
2264 "atariST series port, ++jrb bammi@cadence.com\n");
2267 PerlIO_printf(PerlIO_stdout(),
2268 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2271 PerlIO_printf(PerlIO_stdout(),
2272 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
2275 PerlIO_printf(PerlIO_stdout(),
2276 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2279 PerlIO_printf(PerlIO_stdout(),
2280 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2283 PerlIO_printf(PerlIO_stdout(),
2284 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2287 PerlIO_printf(PerlIO_stdout(),
2288 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2291 PerlIO_printf(PerlIO_stdout(),
2292 "MiNT port by Guido Flohr, 1997-1999\n");
2295 PerlIO_printf(PerlIO_stdout(),
2296 "EPOC port by Olaf Flebbe, 1999-2000\n");
2298 #ifdef BINARY_BUILD_NOTICE
2299 BINARY_BUILD_NOTICE;
2301 PerlIO_printf(PerlIO_stdout(),
2303 Perl may be copied only under the terms of either the Artistic License or the\n\
2304 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
2305 Complete documentation for Perl, including FAQ lists, should be found on\n\
2306 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2307 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2310 if (! (PL_dowarn & G_WARN_ALL_MASK))
2311 PL_dowarn |= G_WARN_ON;
2315 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2316 PL_compiling.cop_warnings = pWARN_ALL ;
2320 PL_dowarn = G_WARN_ALL_OFF;
2321 PL_compiling.cop_warnings = pWARN_NONE ;
2326 if (s[1] == '-') /* Additional switches on #! line. */
2331 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2337 #ifdef ALTERNATE_SHEBANG
2338 case 'S': /* OS/2 needs -S on "extproc" line. */
2346 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2351 /* compliments of Tom Christiansen */
2353 /* unexec() can be found in the Gnu emacs distribution */
2354 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2357 Perl_my_unexec(pTHX)
2365 prog = newSVpv(BIN_EXP, 0);
2366 sv_catpv(prog, "/perl");
2367 file = newSVpv(PL_origfilename, 0);
2368 sv_catpv(file, ".perldump");
2370 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2371 /* unexec prints msg to stderr in case of failure */
2372 PerlProc_exit(status);
2375 # include <lib$routines.h>
2376 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2378 ABORT(); /* for use with undump */
2383 /* initialize curinterp */
2388 #ifdef PERL_OBJECT /* XXX kludge */
2391 PL_chopset = " \n-"; \
2392 PL_copline = NOLINE; \
2393 PL_curcop = &PL_compiling;\
2394 PL_curcopdb = NULL; \
2396 PL_dumpindent = 4; \
2397 PL_laststatval = -1; \
2398 PL_laststype = OP_STAT; \
2399 PL_maxscream = -1; \
2400 PL_maxsysfd = MAXSYSFD; \
2401 PL_statname = Nullsv; \
2402 PL_tmps_floor = -1; \
2404 PL_op_mask = NULL; \
2405 PL_laststatval = -1; \
2406 PL_laststype = OP_STAT; \
2407 PL_mess_sv = Nullsv; \
2408 PL_splitstr = " "; \
2409 PL_generation = 100; \
2410 PL_exitlist = NULL; \
2411 PL_exitlistlen = 0; \
2413 PL_in_clean_objs = FALSE; \
2414 PL_in_clean_all = FALSE; \
2415 PL_profiledata = NULL; \
2417 PL_rsfp_filters = Nullav; \
2422 # ifdef MULTIPLICITY
2423 # define PERLVAR(var,type)
2424 # define PERLVARA(var,n,type)
2425 # if defined(PERL_IMPLICIT_CONTEXT)
2426 # if defined(USE_THREADS)
2427 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2428 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2429 # else /* !USE_THREADS */
2430 # define PERLVARI(var,type,init) aTHX->var = init;
2431 # define PERLVARIC(var,type,init) aTHX->var = init;
2432 # endif /* USE_THREADS */
2434 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2435 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2437 # include "intrpvar.h"
2438 # ifndef USE_THREADS
2439 # include "thrdvar.h"
2446 # define PERLVAR(var,type)
2447 # define PERLVARA(var,n,type)
2448 # define PERLVARI(var,type,init) PL_##var = init;
2449 # define PERLVARIC(var,type,init) PL_##var = init;
2450 # include "intrpvar.h"
2451 # ifndef USE_THREADS
2452 # include "thrdvar.h"
2464 S_init_main_stash(pTHX)
2469 /* Note that strtab is a rather special HV. Assumptions are made
2470 about not iterating on it, and not adding tie magic to it.
2471 It is properly deallocated in perl_destruct() */
2472 PL_strtab = newHV();
2474 MUTEX_INIT(&PL_strtab_mutex);
2476 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2477 hv_ksplit(PL_strtab, 512);
2479 PL_curstash = PL_defstash = newHV();
2480 PL_curstname = newSVpvn("main",4);
2481 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2482 SvREFCNT_dec(GvHV(gv));
2483 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2485 HvNAME(PL_defstash) = savepv("main");
2486 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2487 GvMULTI_on(PL_incgv);
2488 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2489 GvMULTI_on(PL_hintgv);
2490 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2491 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2492 GvMULTI_on(PL_errgv);
2493 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2494 GvMULTI_on(PL_replgv);
2495 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2496 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2497 sv_setpvn(ERRSV, "", 0);
2498 PL_curstash = PL_defstash;
2499 CopSTASH_set(&PL_compiling, PL_defstash);
2500 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2501 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2502 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2503 /* We must init $/ before switches are processed. */
2504 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2508 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2515 PL_origfilename = savepv("-e");
2518 /* if find_script() returns, it returns a malloc()-ed value */
2519 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2521 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2522 char *s = scriptname + 8;
2523 *fdscript = atoi(s);
2527 scriptname = savepv(s + 1);
2528 Safefree(PL_origfilename);
2529 PL_origfilename = scriptname;
2535 Safefree(CopFILE(PL_curcop));
2537 SvREFCNT_dec(CopFILEGV(PL_curcop));
2539 CopFILE_set(PL_curcop, PL_origfilename);
2540 if (strEQ(PL_origfilename,"-"))
2542 if (*fdscript >= 0) {
2543 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2544 #if defined(HAS_FCNTL) && defined(F_SETFD)
2546 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2549 else if (PL_preprocess) {
2550 char *cpp_cfg = CPPSTDIN;
2551 SV *cpp = newSVpvn("",0);
2552 SV *cmd = NEWSV(0,0);
2554 if (strEQ(cpp_cfg, "cppstdin"))
2555 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2556 sv_catpv(cpp, cpp_cfg);
2558 sv_catpvn(sv, "-I", 2);
2559 sv_catpv(sv,PRIVLIB_EXP);
2561 #if defined(MSDOS) || defined(WIN32)
2562 Perl_sv_setpvf(aTHX_ cmd, "\
2563 sed %s -e \"/^[^#]/b\" \
2564 -e \"/^#[ ]*include[ ]/b\" \
2565 -e \"/^#[ ]*define[ ]/b\" \
2566 -e \"/^#[ ]*if[ ]/b\" \
2567 -e \"/^#[ ]*ifdef[ ]/b\" \
2568 -e \"/^#[ ]*ifndef[ ]/b\" \
2569 -e \"/^#[ ]*else/b\" \
2570 -e \"/^#[ ]*elif[ ]/b\" \
2571 -e \"/^#[ ]*undef[ ]/b\" \
2572 -e \"/^#[ ]*endif/b\" \
2574 %s | %"SVf" -C %"SVf" %s",
2575 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2578 Perl_sv_setpvf(aTHX_ cmd, "\
2579 %s %s -e '/^[^#]/b' \
2580 -e '/^#[ ]*include[ ]/b' \
2581 -e '/^#[ ]*define[ ]/b' \
2582 -e '/^#[ ]*if[ ]/b' \
2583 -e '/^#[ ]*ifdef[ ]/b' \
2584 -e '/^#[ ]*ifndef[ ]/b' \
2585 -e '/^#[ ]*else/b' \
2586 -e '/^#[ ]*elif[ ]/b' \
2587 -e '/^#[ ]*undef[ ]/b' \
2588 -e '/^#[ ]*endif/b' \
2590 %s | %"SVf" %"SVf" %s",
2592 Perl_sv_setpvf(aTHX_ cmd, "\
2593 %s %s -e '/^[^#]/b' \
2594 -e '/^#[ ]*include[ ]/b' \
2595 -e '/^#[ ]*define[ ]/b' \
2596 -e '/^#[ ]*if[ ]/b' \
2597 -e '/^#[ ]*ifdef[ ]/b' \
2598 -e '/^#[ ]*ifndef[ ]/b' \
2599 -e '/^#[ ]*else/b' \
2600 -e '/^#[ ]*elif[ ]/b' \
2601 -e '/^#[ ]*undef[ ]/b' \
2602 -e '/^#[ ]*endif/b' \
2604 %s | %"SVf" -C %"SVf" %s",
2611 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2613 scriptname, cpp, sv, CPPMINUS);
2614 PL_doextract = FALSE;
2615 #ifdef IAMSUID /* actually, this is caught earlier */
2616 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2618 (void)seteuid(PL_uid); /* musn't stay setuid root */
2621 (void)setreuid((Uid_t)-1, PL_uid);
2623 #ifdef HAS_SETRESUID
2624 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2626 PerlProc_setuid(PL_uid);
2630 if (PerlProc_geteuid() != PL_uid)
2631 Perl_croak(aTHX_ "Can't do seteuid!\n");
2633 #endif /* IAMSUID */
2634 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2638 else if (!*scriptname) {
2639 forbid_setid("program input from stdin");
2640 PL_rsfp = PerlIO_stdin();
2643 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2644 #if defined(HAS_FCNTL) && defined(F_SETFD)
2646 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2651 #ifndef IAMSUID /* in case script is not readable before setuid */
2653 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2654 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2657 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2658 (int)PERL_REVISION, (int)PERL_VERSION,
2659 (int)PERL_SUBVERSION), PL_origargv);
2660 Perl_croak(aTHX_ "Can't do setuid\n");
2664 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2665 CopFILE(PL_curcop), Strerror(errno));
2670 * I_SYSSTATVFS HAS_FSTATVFS
2672 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2673 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2674 * here so that metaconfig picks them up. */
2678 S_fd_on_nosuid_fs(pTHX_ int fd)
2680 int check_okay = 0; /* able to do all the required sys/libcalls */
2681 int on_nosuid = 0; /* the fd is on a nosuid fs */
2683 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2684 * fstatvfs() is UNIX98.
2685 * fstatfs() is 4.3 BSD.
2686 * ustat()+getmnt() is pre-4.3 BSD.
2687 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2688 * an irrelevant filesystem while trying to reach the right one.
2691 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2693 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2694 defined(HAS_FSTATVFS)
2695 # define FD_ON_NOSUID_CHECK_OKAY
2696 struct statvfs stfs;
2698 check_okay = fstatvfs(fd, &stfs) == 0;
2699 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2700 # endif /* fstatvfs */
2702 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2703 defined(PERL_MOUNT_NOSUID) && \
2704 defined(HAS_FSTATFS) && \
2705 defined(HAS_STRUCT_STATFS) && \
2706 defined(HAS_STRUCT_STATFS_F_FLAGS)
2707 # define FD_ON_NOSUID_CHECK_OKAY
2710 check_okay = fstatfs(fd, &stfs) == 0;
2711 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2712 # endif /* fstatfs */
2714 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2715 defined(PERL_MOUNT_NOSUID) && \
2716 defined(HAS_FSTAT) && \
2717 defined(HAS_USTAT) && \
2718 defined(HAS_GETMNT) && \
2719 defined(HAS_STRUCT_FS_DATA) && \
2721 # define FD_ON_NOSUID_CHECK_OKAY
2724 if (fstat(fd, &fdst) == 0) {
2726 if (ustat(fdst.st_dev, &us) == 0) {
2728 /* NOSTAT_ONE here because we're not examining fields which
2729 * vary between that case and STAT_ONE. */
2730 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2731 size_t cmplen = sizeof(us.f_fname);
2732 if (sizeof(fsd.fd_req.path) < cmplen)
2733 cmplen = sizeof(fsd.fd_req.path);
2734 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2735 fdst.st_dev == fsd.fd_req.dev) {
2737 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2743 # endif /* fstat+ustat+getmnt */
2745 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2746 defined(HAS_GETMNTENT) && \
2747 defined(HAS_HASMNTOPT) && \
2748 defined(MNTOPT_NOSUID)
2749 # define FD_ON_NOSUID_CHECK_OKAY
2750 FILE *mtab = fopen("/etc/mtab", "r");
2751 struct mntent *entry;
2752 struct stat stb, fsb;
2754 if (mtab && (fstat(fd, &stb) == 0)) {
2755 while (entry = getmntent(mtab)) {
2756 if (stat(entry->mnt_dir, &fsb) == 0
2757 && fsb.st_dev == stb.st_dev)
2759 /* found the filesystem */
2761 if (hasmntopt(entry, MNTOPT_NOSUID))
2764 } /* A single fs may well fail its stat(). */
2769 # endif /* getmntent+hasmntopt */
2772 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2775 #endif /* IAMSUID */
2778 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2784 /* do we need to emulate setuid on scripts? */
2786 /* This code is for those BSD systems that have setuid #! scripts disabled
2787 * in the kernel because of a security problem. Merely defining DOSUID
2788 * in perl will not fix that problem, but if you have disabled setuid
2789 * scripts in the kernel, this will attempt to emulate setuid and setgid
2790 * on scripts that have those now-otherwise-useless bits set. The setuid
2791 * root version must be called suidperl or sperlN.NNN. If regular perl
2792 * discovers that it has opened a setuid script, it calls suidperl with
2793 * the same argv that it had. If suidperl finds that the script it has
2794 * just opened is NOT setuid root, it sets the effective uid back to the
2795 * uid. We don't just make perl setuid root because that loses the
2796 * effective uid we had before invoking perl, if it was different from the
2799 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2800 * be defined in suidperl only. suidperl must be setuid root. The
2801 * Configure script will set this up for you if you want it.
2808 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2809 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2810 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2815 #ifndef HAS_SETREUID
2816 /* On this access check to make sure the directories are readable,
2817 * there is actually a small window that the user could use to make
2818 * filename point to an accessible directory. So there is a faint
2819 * chance that someone could execute a setuid script down in a
2820 * non-accessible directory. I don't know what to do about that.
2821 * But I don't think it's too important. The manual lies when
2822 * it says access() is useful in setuid programs.
2824 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2825 Perl_croak(aTHX_ "Permission denied");
2827 /* If we can swap euid and uid, then we can determine access rights
2828 * with a simple stat of the file, and then compare device and
2829 * inode to make sure we did stat() on the same file we opened.
2830 * Then we just have to make sure he or she can execute it.
2833 struct stat tmpstatbuf;
2837 setreuid(PL_euid,PL_uid) < 0
2840 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2843 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2844 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2845 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2846 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2847 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2848 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2849 Perl_croak(aTHX_ "Permission denied");
2851 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2852 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2853 (void)PerlIO_close(PL_rsfp);
2854 #ifdef MAIL_CAN_BE_USED_SAFELY /* No, it can't. As of Aug 05 200, there's bugtraq exploit. */
2855 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2856 PerlIO_printf(PL_rsfp,
2857 "User %"Uid_t_f" tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2858 (Filename of set-id script was %s, uid %"Uid_t_f" gid %"Gid_t_f".)\n\nSincerely,\nperl\n",
2859 PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2860 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
2862 PL_statbuf.st_uid, PL_statbuf.st_gid);
2863 (void)PerlProc_pclose(PL_rsfp);
2866 Perl_croak(aTHX_ "Permission denied\n");
2870 setreuid(PL_uid,PL_euid) < 0
2872 # if defined(HAS_SETRESUID)
2873 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2876 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2877 Perl_croak(aTHX_ "Can't reswap uid and euid");
2878 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2879 Perl_croak(aTHX_ "Permission denied\n");
2881 #endif /* HAS_SETREUID */
2882 #endif /* IAMSUID */
2884 if (!S_ISREG(PL_statbuf.st_mode))
2885 Perl_croak(aTHX_ "Permission denied");
2886 if (PL_statbuf.st_mode & S_IWOTH)
2887 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2888 PL_doswitches = FALSE; /* -s is insecure in suid */
2889 CopLINE_inc(PL_curcop);
2890 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2891 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2892 Perl_croak(aTHX_ "No #! line");
2893 s = SvPV(PL_linestr,n_a)+2;
2895 while (!isSPACE(*s)) s++;
2896 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2897 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2898 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2899 Perl_croak(aTHX_ "Not a perl script");
2900 while (*s == ' ' || *s == '\t') s++;
2902 * #! arg must be what we saw above. They can invoke it by
2903 * mentioning suidperl explicitly, but they may not add any strange
2904 * arguments beyond what #! says if they do invoke suidperl that way.
2906 len = strlen(validarg);
2907 if (strEQ(validarg," PHOOEY ") ||
2908 strnNE(s,validarg,len) || !isSPACE(s[len]))
2909 Perl_croak(aTHX_ "Args must match #! line");
2912 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2913 PL_euid == PL_statbuf.st_uid)
2915 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2916 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2917 #endif /* IAMSUID */
2919 if (PL_euid) { /* oops, we're not the setuid root perl */
2920 (void)PerlIO_close(PL_rsfp);
2923 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2924 (int)PERL_REVISION, (int)PERL_VERSION,
2925 (int)PERL_SUBVERSION), PL_origargv);
2927 Perl_croak(aTHX_ "Can't do setuid\n");
2930 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2932 (void)setegid(PL_statbuf.st_gid);
2935 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2937 #ifdef HAS_SETRESGID
2938 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2940 PerlProc_setgid(PL_statbuf.st_gid);
2944 if (PerlProc_getegid() != PL_statbuf.st_gid)
2945 Perl_croak(aTHX_ "Can't do setegid!\n");
2947 if (PL_statbuf.st_mode & S_ISUID) {
2948 if (PL_statbuf.st_uid != PL_euid)
2950 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2953 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2955 #ifdef HAS_SETRESUID
2956 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2958 PerlProc_setuid(PL_statbuf.st_uid);
2962 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2963 Perl_croak(aTHX_ "Can't do seteuid!\n");
2965 else if (PL_uid) { /* oops, mustn't run as root */
2967 (void)seteuid((Uid_t)PL_uid);
2970 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2972 #ifdef HAS_SETRESUID
2973 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2975 PerlProc_setuid((Uid_t)PL_uid);
2979 if (PerlProc_geteuid() != PL_uid)
2980 Perl_croak(aTHX_ "Can't do seteuid!\n");
2983 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2984 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
2987 else if (PL_preprocess)
2988 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
2989 else if (fdscript >= 0)
2990 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
2992 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
2994 /* We absolutely must clear out any saved ids here, so we */
2995 /* exec the real perl, substituting fd script for scriptname. */
2996 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2997 PerlIO_rewind(PL_rsfp);
2998 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2999 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3000 if (!PL_origargv[which])
3001 Perl_croak(aTHX_ "Permission denied");
3002 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3003 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3004 #if defined(HAS_FCNTL) && defined(F_SETFD)
3005 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3007 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3008 (int)PERL_REVISION, (int)PERL_VERSION,
3009 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3010 Perl_croak(aTHX_ "Can't do setuid\n");
3011 #endif /* IAMSUID */
3013 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3014 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3016 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3017 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3019 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3022 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3023 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3024 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3025 /* not set-id, must be wrapped */
3031 S_find_beginning(pTHX)
3033 register char *s, *s2;
3035 /* skip forward in input to the real script? */
3038 #ifdef MACOS_TRADITIONAL
3039 /* Since the Mac OS does not honor !# arguments for us, we do it ourselves */
3041 while (PL_doextract || gMacPerl_AlwaysExtract) {
3042 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3043 if (!gMacPerl_AlwaysExtract)
3044 Perl_croak(aTHX_ "No Perl script found in input\n");
3046 if (PL_doextract) /* require explicit override ? */
3047 if (!OverrideExtract(PL_origfilename))
3048 Perl_croak(aTHX_ "User aborted script\n");
3050 PL_doextract = FALSE;
3052 /* Pater peccavi, file does not have #! */
3053 PerlIO_rewind(PL_rsfp);
3058 while (PL_doextract) {
3059 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3060 Perl_croak(aTHX_ "No Perl script found in input\n");
3062 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3063 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3064 PL_doextract = FALSE;
3065 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3067 while (*s == ' ' || *s == '\t') s++;
3069 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3070 if (strnEQ(s2-4,"perl",4))
3072 while ((s = moreswitches(s)))
3083 PL_uid = PerlProc_getuid();
3084 PL_euid = PerlProc_geteuid();
3085 PL_gid = PerlProc_getgid();
3086 PL_egid = PerlProc_getegid();
3088 PL_uid |= PL_gid << 16;
3089 PL_euid |= PL_egid << 16;
3091 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3095 S_forbid_setid(pTHX_ char *s)
3097 if (PL_euid != PL_uid)
3098 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3099 if (PL_egid != PL_gid)
3100 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3104 Perl_init_debugger(pTHX)
3107 HV *ostash = PL_curstash;
3109 PL_curstash = PL_debstash;
3110 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3111 AvREAL_off(PL_dbargs);
3112 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3113 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3114 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3115 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3116 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3117 sv_setiv(PL_DBsingle, 0);
3118 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3119 sv_setiv(PL_DBtrace, 0);
3120 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3121 sv_setiv(PL_DBsignal, 0);
3122 PL_curstash = ostash;
3125 #ifndef STRESS_REALLOC
3126 #define REASONABLE(size) (size)
3128 #define REASONABLE(size) (1) /* unreasonable */
3132 Perl_init_stacks(pTHX)
3134 /* start with 128-item stack and 8K cxstack */
3135 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3136 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3137 PL_curstackinfo->si_type = PERLSI_MAIN;
3138 PL_curstack = PL_curstackinfo->si_stack;
3139 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3141 PL_stack_base = AvARRAY(PL_curstack);
3142 PL_stack_sp = PL_stack_base;
3143 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3145 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3148 PL_tmps_max = REASONABLE(128);
3150 New(54,PL_markstack,REASONABLE(32),I32);
3151 PL_markstack_ptr = PL_markstack;
3152 PL_markstack_max = PL_markstack + REASONABLE(32);
3156 New(54,PL_scopestack,REASONABLE(32),I32);
3157 PL_scopestack_ix = 0;
3158 PL_scopestack_max = REASONABLE(32);
3160 New(54,PL_savestack,REASONABLE(128),ANY);
3161 PL_savestack_ix = 0;
3162 PL_savestack_max = REASONABLE(128);
3164 New(54,PL_retstack,REASONABLE(16),OP*);
3166 PL_retstack_max = REASONABLE(16);
3175 while (PL_curstackinfo->si_next)
3176 PL_curstackinfo = PL_curstackinfo->si_next;
3177 while (PL_curstackinfo) {
3178 PERL_SI *p = PL_curstackinfo->si_prev;
3179 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3180 Safefree(PL_curstackinfo->si_cxstack);
3181 Safefree(PL_curstackinfo);
3182 PL_curstackinfo = p;
3184 Safefree(PL_tmps_stack);
3185 Safefree(PL_markstack);
3186 Safefree(PL_scopestack);
3187 Safefree(PL_savestack);
3188 Safefree(PL_retstack);
3192 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3203 lex_start(PL_linestr);
3205 PL_subname = newSVpvn("main",4);
3209 S_init_predump_symbols(pTHX)
3215 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3216 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3217 GvMULTI_on(PL_stdingv);
3218 io = GvIOp(PL_stdingv);
3219 IoIFP(io) = PerlIO_stdin();
3220 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3222 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3224 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3227 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3229 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3231 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3233 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3234 GvMULTI_on(PL_stderrgv);
3235 io = GvIOp(PL_stderrgv);
3236 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3237 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3239 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3241 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3244 Safefree(PL_osname);
3245 PL_osname = savepv(OSNAME);
3249 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3256 argc--,argv++; /* skip name of script */
3257 if (PL_doswitches) {
3258 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3261 if (argv[0][1] == '-' && !argv[0][2]) {
3265 if ((s = strchr(argv[0], '='))) {
3267 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3270 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3273 PL_toptarget = NEWSV(0,0);
3274 sv_upgrade(PL_toptarget, SVt_PVFM);
3275 sv_setpvn(PL_toptarget, "", 0);
3276 PL_bodytarget = NEWSV(0,0);
3277 sv_upgrade(PL_bodytarget, SVt_PVFM);
3278 sv_setpvn(PL_bodytarget, "", 0);
3279 PL_formtarget = PL_bodytarget;
3282 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3283 #ifdef MACOS_TRADITIONAL
3284 /* $0 is not majick on a Mac */
3285 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3287 sv_setpv(GvSV(tmpgv),PL_origfilename);
3288 magicname("0", "0", 1);
3291 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3293 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3295 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3297 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3298 GvMULTI_on(PL_argvgv);
3299 (void)gv_AVadd(PL_argvgv);
3300 av_clear(GvAVn(PL_argvgv));
3301 for (; argc > 0; argc--,argv++) {
3302 SV *sv = newSVpv(argv[0],0);
3303 av_push(GvAVn(PL_argvgv),sv);
3304 if (PL_widesyscalls)
3305 (void)sv_utf8_decode(sv);
3308 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3310 GvMULTI_on(PL_envgv);
3311 hv = GvHVn(PL_envgv);
3312 hv_magic(hv, PL_envgv, 'E');
3313 #if !defined( VMS) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) /* VMS doesn't have environ array */
3314 /* Note that if the supplied env parameter is actually a copy
3315 of the global environ then it may now point to free'd memory
3316 if the environment has been modified since. To avoid this
3317 problem we treat env==NULL as meaning 'use the default'
3322 environ[0] = Nullch;
3323 for (; *env; env++) {
3324 if (!(s = strchr(*env,'=')))
3330 sv = newSVpv(s--,0);
3331 (void)hv_store(hv, *env, s - *env, sv, 0);
3333 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3334 /* Sins of the RTL. See note in my_setenv(). */
3335 (void)PerlEnv_putenv(savepv(*env));
3339 #ifdef DYNAMIC_ENV_FETCH
3340 HvNAME(hv) = savepv(ENV_HV_NAME);
3344 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3345 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3349 S_init_perllib(pTHX)
3354 s = PerlEnv_getenv("PERL5LIB");
3356 incpush(s, TRUE, TRUE);
3358 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3360 /* Treat PERL5?LIB as a possible search list logical name -- the
3361 * "natural" VMS idiom for a Unix path string. We allow each
3362 * element to be a set of |-separated directories for compatibility.
3366 if (my_trnlnm("PERL5LIB",buf,0))
3367 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3369 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3373 /* Use the ~-expanded versions of APPLLIB (undocumented),
3374 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3377 incpush(APPLLIB_EXP, TRUE, TRUE);
3381 incpush(ARCHLIB_EXP, FALSE, FALSE);
3383 #ifdef MACOS_TRADITIONAL
3385 struct stat tmpstatbuf;
3386 SV * privdir = NEWSV(55, 0);
3387 char * macperl = PerlEnv_getenv("MACPERL");
3392 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3393 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3394 incpush(SvPVX(privdir), TRUE, FALSE);
3395 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3396 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3397 incpush(SvPVX(privdir), TRUE, FALSE);
3399 SvREFCNT_dec(privdir);
3402 incpush(":", FALSE, FALSE);
3405 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3408 incpush(PRIVLIB_EXP, TRUE, FALSE);
3410 incpush(PRIVLIB_EXP, FALSE, FALSE);
3414 /* sitearch is always relative to sitelib on Windows for
3415 * DLL-based path intuition to work correctly */
3416 # if !defined(WIN32)
3417 incpush(SITEARCH_EXP, FALSE, FALSE);
3423 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3425 incpush(SITELIB_EXP, FALSE, FALSE);
3429 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3430 incpush(SITELIB_STEM, FALSE, TRUE);
3433 #ifdef PERL_VENDORARCH_EXP
3434 /* vendorarch is always relative to vendorlib on Windows for
3435 * DLL-based path intuition to work correctly */
3436 # if !defined(WIN32)
3437 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3441 #ifdef PERL_VENDORLIB_EXP
3443 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3445 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3449 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3450 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3453 #ifdef PERL_OTHERLIBDIRS
3454 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3458 incpush(".", FALSE, FALSE);
3459 #endif /* MACOS_TRADITIONAL */
3463 # define PERLLIB_SEP ';'
3466 # define PERLLIB_SEP '|'
3468 # if defined(MACOS_TRADITIONAL)
3469 # define PERLLIB_SEP ','
3471 # define PERLLIB_SEP ':'
3475 #ifndef PERLLIB_MANGLE
3476 # define PERLLIB_MANGLE(s,n) (s)
3480 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3482 SV *subdir = Nullsv;
3487 if (addsubdirs || addoldvers) {
3488 subdir = sv_newmortal();
3491 /* Break at all separators */
3493 SV *libdir = NEWSV(55,0);
3496 /* skip any consecutive separators */
3497 while ( *p == PERLLIB_SEP ) {
3498 /* Uncomment the next line for PATH semantics */
3499 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3503 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3504 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3509 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3510 p = Nullch; /* break out */
3512 #ifdef MACOS_TRADITIONAL
3513 if (!strchr(SvPVX(libdir), ':'))
3514 sv_insert(libdir, 0, 0, ":", 1);
3515 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3516 sv_catpv(libdir, ":");
3520 * BEFORE pushing libdir onto @INC we may first push version- and
3521 * archname-specific sub-directories.
3523 if (addsubdirs || addoldvers) {
3524 #ifdef PERL_INC_VERSION_LIST
3525 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3526 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3527 const char **incver;
3529 struct stat tmpstatbuf;
3534 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3536 while (unix[len-1] == '/') len--; /* Cosmetic */
3537 sv_usepvn(libdir,unix,len);
3540 PerlIO_printf(Perl_error_log,
3541 "Failed to unixify @INC element \"%s\"\n",
3545 #ifdef MACOS_TRADITIONAL
3546 #define PERL_AV_SUFFIX_FMT ""
3547 #define PERL_ARCH_FMT ":%s"
3549 #define PERL_AV_SUFFIX_FMT "/"
3550 #define PERL_ARCH_FMT "/%s"
3552 /* .../version/archname if -d .../version/archname */
3553 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT PERL_ARCH_FMT,
3555 (int)PERL_REVISION, (int)PERL_VERSION,
3556 (int)PERL_SUBVERSION, ARCHNAME);
3557 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3558 S_ISDIR(tmpstatbuf.st_mode))
3559 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3561 /* .../version if -d .../version */
3562 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT, libdir,
3563 (int)PERL_REVISION, (int)PERL_VERSION,
3564 (int)PERL_SUBVERSION);
3565 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3566 S_ISDIR(tmpstatbuf.st_mode))
3567 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3569 /* .../archname if -d .../archname */
3570 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3571 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3572 S_ISDIR(tmpstatbuf.st_mode))
3573 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3576 #ifdef PERL_INC_VERSION_LIST
3578 for (incver = incverlist; *incver; incver++) {
3579 /* .../xxx if -d .../xxx */
3580 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3581 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3582 S_ISDIR(tmpstatbuf.st_mode))
3583 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3589 /* finally push this lib directory on the end of @INC */
3590 av_push(GvAVn(PL_incgv), libdir);
3595 STATIC struct perl_thread *
3596 S_init_main_thread(pTHX)
3598 #if !defined(PERL_IMPLICIT_CONTEXT)
3599 struct perl_thread *thr;
3603 Newz(53, thr, 1, struct perl_thread);
3604 PL_curcop = &PL_compiling;
3605 thr->interp = PERL_GET_INTERP;
3606 thr->cvcache = newHV();
3607 thr->threadsv = newAV();
3608 /* thr->threadsvp is set when find_threadsv is called */
3609 thr->specific = newAV();
3610 thr->flags = THRf_R_JOINABLE;
3611 MUTEX_INIT(&thr->mutex);
3612 /* Handcraft thrsv similarly to mess_sv */
3613 New(53, PL_thrsv, 1, SV);
3614 Newz(53, xpv, 1, XPV);
3615 SvFLAGS(PL_thrsv) = SVt_PV;
3616 SvANY(PL_thrsv) = (void*)xpv;
3617 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3618 SvPVX(PL_thrsv) = (char*)thr;
3619 SvCUR_set(PL_thrsv, sizeof(thr));
3620 SvLEN_set(PL_thrsv, sizeof(thr));
3621 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3622 thr->oursv = PL_thrsv;
3623 PL_chopset = " \n-";
3626 MUTEX_LOCK(&PL_threads_mutex);
3631 MUTEX_UNLOCK(&PL_threads_mutex);
3633 #ifdef HAVE_THREAD_INTERN
3634 Perl_init_thread_intern(thr);
3637 #ifdef SET_THREAD_SELF
3638 SET_THREAD_SELF(thr);
3640 thr->self = pthread_self();
3641 #endif /* SET_THREAD_SELF */
3645 * These must come after the SET_THR because sv_setpvn does
3646 * SvTAINT and the taint fields require dTHR.
3648 PL_toptarget = NEWSV(0,0);
3649 sv_upgrade(PL_toptarget, SVt_PVFM);
3650 sv_setpvn(PL_toptarget, "", 0);
3651 PL_bodytarget = NEWSV(0,0);
3652 sv_upgrade(PL_bodytarget, SVt_PVFM);
3653 sv_setpvn(PL_bodytarget, "", 0);
3654 PL_formtarget = PL_bodytarget;
3655 thr->errsv = newSVpvn("", 0);
3656 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3659 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3660 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3661 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3662 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3663 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3665 PL_reginterp_cnt = 0;
3669 #endif /* USE_THREADS */
3672 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3676 line_t oldline = CopLINE(PL_curcop);
3682 while (AvFILL(paramList) >= 0) {
3683 cv = (CV*)av_shift(paramList);
3685 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3686 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3692 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3696 (void)SvPV(atsv, len);
3699 PL_curcop = &PL_compiling;
3700 CopLINE_set(PL_curcop, oldline);
3701 if (paramList == PL_beginav)
3702 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3704 Perl_sv_catpvf(aTHX_ atsv,
3705 "%s failed--call queue aborted",
3706 paramList == PL_checkav ? "CHECK"
3707 : paramList == PL_initav ? "INIT"
3709 while (PL_scopestack_ix > oldscope)
3712 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3719 /* my_exit() was called */
3720 while (PL_scopestack_ix > oldscope)
3723 PL_curstash = PL_defstash;
3724 PL_curcop = &PL_compiling;
3725 CopLINE_set(PL_curcop, oldline);
3727 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3728 if (paramList == PL_beginav)
3729 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3731 Perl_croak(aTHX_ "%s failed--call queue aborted",
3732 paramList == PL_checkav ? "CHECK"
3733 : paramList == PL_initav ? "INIT"
3740 PL_curcop = &PL_compiling;
3741 CopLINE_set(PL_curcop, oldline);
3744 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3752 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3754 S_vcall_list_body(pTHX_ va_list args)
3756 CV *cv = va_arg(args, CV*);
3757 return call_list_body(cv);
3762 S_call_list_body(pTHX_ CV *cv)
3764 PUSHMARK(PL_stack_sp);
3765 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3770 Perl_my_exit(pTHX_ U32 status)
3774 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3775 thr, (unsigned long) status));
3784 STATUS_NATIVE_SET(status);
3791 Perl_my_failure_exit(pTHX)
3794 if (vaxc$errno & 1) {
3795 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3796 STATUS_NATIVE_SET(44);
3799 if (!vaxc$errno && errno) /* unlikely */
3800 STATUS_NATIVE_SET(44);
3802 STATUS_NATIVE_SET(vaxc$errno);
3807 STATUS_POSIX_SET(errno);
3809 exitstatus = STATUS_POSIX >> 8;
3810 if (exitstatus & 255)
3811 STATUS_POSIX_SET(exitstatus);
3813 STATUS_POSIX_SET(255);
3820 S_my_exit_jump(pTHX)
3823 register PERL_CONTEXT *cx;
3828 SvREFCNT_dec(PL_e_script);
3829 PL_e_script = Nullsv;
3832 POPSTACK_TO(PL_mainstack);
3833 if (cxstack_ix >= 0) {
3836 POPBLOCK(cx,PL_curpm);
3848 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3851 p = SvPVX(PL_e_script);
3852 nl = strchr(p, '\n');
3853 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3855 filter_del(read_e_script);
3858 sv_catpvn(buf_sv, p, nl-p);
3859 sv_chop(PL_e_script, nl);