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);
184 thr = init_main_thread();
185 #endif /* USE_THREADS */
187 #ifdef PERL_FLEXIBLE_EXCEPTIONS
188 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
191 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
193 PL_linestr = NEWSV(65,79);
194 sv_upgrade(PL_linestr,SVt_PVIV);
196 if (!SvREADONLY(&PL_sv_undef)) {
197 /* set read-only and try to insure than we wont see REFCNT==0
200 SvREADONLY_on(&PL_sv_undef);
201 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
203 sv_setpv(&PL_sv_no,PL_No);
205 SvREADONLY_on(&PL_sv_no);
206 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
208 sv_setpv(&PL_sv_yes,PL_Yes);
210 SvREADONLY_on(&PL_sv_yes);
211 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
216 /* PL_sighandlerp = sighandler; */
218 PL_sighandlerp = Perl_sighandler;
220 PL_pidstatus = newHV();
224 * There is no way we can refer to them from Perl so close them to save
225 * space. The other alternative would be to provide STDAUX and STDPRN
228 (void)fclose(stdaux);
229 (void)fclose(stdprn);
233 PL_nrs = newSVpvn("\n", 1);
234 PL_rs = SvREFCNT_inc(PL_nrs);
239 PL_lex_state = LEX_NOTPARSING;
245 SET_NUMERIC_STANDARD();
249 PL_patchlevel = NEWSV(0,4);
250 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
251 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
252 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
253 s = (U8*)SvPVX(PL_patchlevel);
254 s = uv_to_utf8(s, (UV)PERL_REVISION);
255 s = uv_to_utf8(s, (UV)PERL_VERSION);
256 s = uv_to_utf8(s, (UV)PERL_SUBVERSION);
258 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
259 SvPOK_on(PL_patchlevel);
260 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
261 + ((NV)PERL_VERSION / (NV)1000)
262 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
263 + ((NV)PERL_SUBVERSION / (NV)1000000)
266 SvNOK_on(PL_patchlevel); /* dual valued */
267 SvUTF8_on(PL_patchlevel);
268 SvREADONLY_on(PL_patchlevel);
271 #if defined(LOCAL_PATCH_COUNT)
272 PL_localpatches = local_patches; /* For possible -v */
275 #ifdef HAVE_INTERP_INTERN
279 PerlIO_init(); /* Hook to IO system */
281 PL_fdpid = newAV(); /* for remembering popen pids by fd */
282 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
283 PL_errors = newSVpvn("",0);
289 =for apidoc perl_destruct
291 Shuts down a Perl interpreter. See L<perlembed>.
300 int destruct_level; /* 0=none, 1=full, 2=full with checks */
306 #endif /* USE_THREADS */
308 /* wait for all pseudo-forked children to finish */
309 PERL_WAIT_FOR_CHILDREN;
313 /* Pass 1 on any remaining threads: detach joinables, join zombies */
315 MUTEX_LOCK(&PL_threads_mutex);
316 DEBUG_S(PerlIO_printf(Perl_debug_log,
317 "perl_destruct: waiting for %d threads...\n",
319 for (t = thr->next; t != thr; t = t->next) {
320 MUTEX_LOCK(&t->mutex);
321 switch (ThrSTATE(t)) {
324 DEBUG_S(PerlIO_printf(Perl_debug_log,
325 "perl_destruct: joining zombie %p\n", t));
326 ThrSETSTATE(t, THRf_DEAD);
327 MUTEX_UNLOCK(&t->mutex);
330 * The SvREFCNT_dec below may take a long time (e.g. av
331 * may contain an object scalar whose destructor gets
332 * called) so we have to unlock threads_mutex and start
335 MUTEX_UNLOCK(&PL_threads_mutex);
337 SvREFCNT_dec((SV*)av);
338 DEBUG_S(PerlIO_printf(Perl_debug_log,
339 "perl_destruct: joined zombie %p OK\n", t));
341 case THRf_R_JOINABLE:
342 DEBUG_S(PerlIO_printf(Perl_debug_log,
343 "perl_destruct: detaching thread %p\n", t));
344 ThrSETSTATE(t, THRf_R_DETACHED);
346 * We unlock threads_mutex and t->mutex in the opposite order
347 * from which we locked them just so that DETACH won't
348 * deadlock if it panics. It's only a breach of good style
349 * not a bug since they are unlocks not locks.
351 MUTEX_UNLOCK(&PL_threads_mutex);
353 MUTEX_UNLOCK(&t->mutex);
356 DEBUG_S(PerlIO_printf(Perl_debug_log,
357 "perl_destruct: ignoring %p (state %u)\n",
359 MUTEX_UNLOCK(&t->mutex);
360 /* fall through and out */
363 /* We leave the above "Pass 1" loop with threads_mutex still locked */
365 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
366 while (PL_nthreads > 1)
368 DEBUG_S(PerlIO_printf(Perl_debug_log,
369 "perl_destruct: final wait for %d threads\n",
371 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
373 /* At this point, we're the last thread */
374 MUTEX_UNLOCK(&PL_threads_mutex);
375 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
376 MUTEX_DESTROY(&PL_threads_mutex);
377 COND_DESTROY(&PL_nthreads_cond);
378 #endif /* !defined(FAKE_THREADS) */
379 #endif /* USE_THREADS */
381 destruct_level = PL_perl_destruct_level;
385 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
387 if (destruct_level < i)
396 /* We must account for everything. */
398 /* Destroy the main CV and syntax tree */
400 PL_curpad = AvARRAY(PL_comppad);
401 op_free(PL_main_root);
402 PL_main_root = Nullop;
404 PL_curcop = &PL_compiling;
405 PL_main_start = Nullop;
406 SvREFCNT_dec(PL_main_cv);
410 if (PL_sv_objcount) {
412 * Try to destruct global references. We do this first so that the
413 * destructors and destructees still exist. Some sv's might remain.
414 * Non-referenced objects are on their own.
419 /* unhook hooks which will soon be, or use, destroyed data */
420 SvREFCNT_dec(PL_warnhook);
421 PL_warnhook = Nullsv;
422 SvREFCNT_dec(PL_diehook);
425 /* call exit list functions */
426 while (PL_exitlistlen-- > 0)
427 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
429 Safefree(PL_exitlist);
431 if (destruct_level == 0){
433 DEBUG_P(debprofdump());
435 /* The exit() function will do everything that needs doing. */
439 /* loosen bonds of global variables */
442 (void)PerlIO_close(PL_rsfp);
446 /* Filters for program text */
447 SvREFCNT_dec(PL_rsfp_filters);
448 PL_rsfp_filters = Nullav;
451 PL_preprocess = FALSE;
457 PL_doswitches = FALSE;
458 PL_dowarn = G_WARN_OFF;
459 PL_doextract = FALSE;
460 PL_sawampersand = FALSE; /* must save all match strings */
463 Safefree(PL_inplace);
465 SvREFCNT_dec(PL_patchlevel);
468 SvREFCNT_dec(PL_e_script);
469 PL_e_script = Nullsv;
472 /* magical thingies */
474 Safefree(PL_ofs); /* $, */
477 Safefree(PL_ors); /* $\ */
480 SvREFCNT_dec(PL_rs); /* $/ */
483 SvREFCNT_dec(PL_nrs); /* $/ helper */
486 PL_multiline = 0; /* $* */
487 Safefree(PL_osname); /* $^O */
490 SvREFCNT_dec(PL_statname);
491 PL_statname = Nullsv;
494 /* defgv, aka *_ should be taken care of elsewhere */
496 /* clean up after study() */
497 SvREFCNT_dec(PL_lastscream);
498 PL_lastscream = Nullsv;
499 Safefree(PL_screamfirst);
501 Safefree(PL_screamnext);
505 Safefree(PL_efloatbuf);
506 PL_efloatbuf = Nullch;
509 /* startup and shutdown function lists */
510 SvREFCNT_dec(PL_beginav);
511 SvREFCNT_dec(PL_endav);
512 SvREFCNT_dec(PL_checkav);
513 SvREFCNT_dec(PL_initav);
519 /* shortcuts just get cleared */
525 PL_argvoutgv = Nullgv;
527 PL_stderrgv = Nullgv;
528 PL_last_in_gv = Nullgv;
530 PL_debstash = Nullhv;
532 /* reset so print() ends up where we expect */
535 SvREFCNT_dec(PL_argvout_stack);
536 PL_argvout_stack = Nullav;
538 SvREFCNT_dec(PL_modglobal);
539 PL_modglobal = Nullhv;
540 SvREFCNT_dec(PL_preambleav);
541 PL_preambleav = Nullav;
542 SvREFCNT_dec(PL_subname);
544 SvREFCNT_dec(PL_linestr);
546 SvREFCNT_dec(PL_pidstatus);
547 PL_pidstatus = Nullhv;
548 SvREFCNT_dec(PL_toptarget);
549 PL_toptarget = Nullsv;
550 SvREFCNT_dec(PL_bodytarget);
551 PL_bodytarget = Nullsv;
552 PL_formtarget = Nullsv;
554 /* free locale stuff */
555 #ifdef USE_LOCALE_COLLATE
556 Safefree(PL_collation_name);
557 PL_collation_name = Nullch;
560 #ifdef USE_LOCALE_NUMERIC
561 Safefree(PL_numeric_name);
562 PL_numeric_name = Nullch;
565 /* clear utf8 character classes */
566 SvREFCNT_dec(PL_utf8_alnum);
567 SvREFCNT_dec(PL_utf8_alnumc);
568 SvREFCNT_dec(PL_utf8_ascii);
569 SvREFCNT_dec(PL_utf8_alpha);
570 SvREFCNT_dec(PL_utf8_space);
571 SvREFCNT_dec(PL_utf8_cntrl);
572 SvREFCNT_dec(PL_utf8_graph);
573 SvREFCNT_dec(PL_utf8_digit);
574 SvREFCNT_dec(PL_utf8_upper);
575 SvREFCNT_dec(PL_utf8_lower);
576 SvREFCNT_dec(PL_utf8_print);
577 SvREFCNT_dec(PL_utf8_punct);
578 SvREFCNT_dec(PL_utf8_xdigit);
579 SvREFCNT_dec(PL_utf8_mark);
580 SvREFCNT_dec(PL_utf8_toupper);
581 SvREFCNT_dec(PL_utf8_tolower);
582 PL_utf8_alnum = Nullsv;
583 PL_utf8_alnumc = Nullsv;
584 PL_utf8_ascii = Nullsv;
585 PL_utf8_alpha = Nullsv;
586 PL_utf8_space = Nullsv;
587 PL_utf8_cntrl = Nullsv;
588 PL_utf8_graph = Nullsv;
589 PL_utf8_digit = Nullsv;
590 PL_utf8_upper = Nullsv;
591 PL_utf8_lower = Nullsv;
592 PL_utf8_print = Nullsv;
593 PL_utf8_punct = Nullsv;
594 PL_utf8_xdigit = Nullsv;
595 PL_utf8_mark = Nullsv;
596 PL_utf8_toupper = Nullsv;
597 PL_utf8_totitle = Nullsv;
598 PL_utf8_tolower = Nullsv;
600 if (!specialWARN(PL_compiling.cop_warnings))
601 SvREFCNT_dec(PL_compiling.cop_warnings);
602 PL_compiling.cop_warnings = Nullsv;
604 Safefree(CopFILE(&PL_compiling));
605 CopFILE(&PL_compiling) = Nullch;
606 Safefree(CopSTASHPV(&PL_compiling));
608 SvREFCNT_dec(CopFILEGV(&PL_compiling));
609 CopFILEGV(&PL_compiling) = Nullgv;
610 /* cop_stash is not refcounted */
613 /* Prepare to destruct main symbol table. */
618 SvREFCNT_dec(PL_curstname);
619 PL_curstname = Nullsv;
621 /* clear queued errors */
622 SvREFCNT_dec(PL_errors);
626 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
627 if (PL_scopestack_ix != 0)
628 Perl_warner(aTHX_ WARN_INTERNAL,
629 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
630 (long)PL_scopestack_ix);
631 if (PL_savestack_ix != 0)
632 Perl_warner(aTHX_ WARN_INTERNAL,
633 "Unbalanced saves: %ld more saves than restores\n",
634 (long)PL_savestack_ix);
635 if (PL_tmps_floor != -1)
636 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
637 (long)PL_tmps_floor + 1);
638 if (cxstack_ix != -1)
639 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
640 (long)cxstack_ix + 1);
643 /* Now absolutely destruct everything, somehow or other, loops or no. */
645 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
646 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
647 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
648 last_sv_count = PL_sv_count;
651 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
652 SvFLAGS(PL_fdpid) |= SVt_PVAV;
653 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
654 SvFLAGS(PL_strtab) |= SVt_PVHV;
656 AvREAL_off(PL_fdpid); /* no surviving entries */
657 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
660 /* Destruct the global string table. */
662 /* Yell and reset the HeVAL() slots that are still holding refcounts,
663 * so that sv_free() won't fail on them.
671 max = HvMAX(PL_strtab);
672 array = HvARRAY(PL_strtab);
675 if (hent && ckWARN_d(WARN_INTERNAL)) {
676 Perl_warner(aTHX_ WARN_INTERNAL,
677 "Unbalanced string table refcount: (%d) for \"%s\"",
678 HeVAL(hent) - Nullsv, HeKEY(hent));
679 HeVAL(hent) = Nullsv;
689 SvREFCNT_dec(PL_strtab);
691 /* free special SVs */
693 SvREFCNT(&PL_sv_yes) = 0;
694 sv_clear(&PL_sv_yes);
695 SvANY(&PL_sv_yes) = NULL;
696 SvFLAGS(&PL_sv_yes) = 0;
698 SvREFCNT(&PL_sv_no) = 0;
700 SvANY(&PL_sv_no) = NULL;
701 SvFLAGS(&PL_sv_no) = 0;
703 SvREFCNT(&PL_sv_undef) = 0;
704 SvREADONLY_off(&PL_sv_undef);
706 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
707 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
711 /* No SVs have survived, need to clean out */
712 Safefree(PL_origfilename);
713 Safefree(PL_reg_start_tmp);
715 Safefree(PL_reg_curpm);
716 Safefree(PL_reg_poscache);
717 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
718 Safefree(PL_op_mask);
719 Safefree(PL_psig_ptr);
720 Safefree(PL_psig_name);
722 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
724 DEBUG_P(debprofdump());
726 MUTEX_DESTROY(&PL_strtab_mutex);
727 MUTEX_DESTROY(&PL_sv_mutex);
728 MUTEX_DESTROY(&PL_eval_mutex);
729 MUTEX_DESTROY(&PL_cred_mutex);
730 COND_DESTROY(&PL_eval_cond);
731 #ifdef EMULATE_ATOMIC_REFCOUNTS
732 MUTEX_DESTROY(&PL_svref_mutex);
733 #endif /* EMULATE_ATOMIC_REFCOUNTS */
735 /* As the penultimate thing, free the non-arena SV for thrsv */
736 Safefree(SvPVX(PL_thrsv));
737 Safefree(SvANY(PL_thrsv));
740 #endif /* USE_THREADS */
742 /* As the absolutely last thing, free the non-arena SV for mess() */
745 /* it could have accumulated taint magic */
746 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
749 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
750 moremagic = mg->mg_moremagic;
751 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
752 Safefree(mg->mg_ptr);
756 /* we know that type >= SVt_PV */
757 (void)SvOOK_off(PL_mess_sv);
758 Safefree(SvPVX(PL_mess_sv));
759 Safefree(SvANY(PL_mess_sv));
760 Safefree(PL_mess_sv);
766 =for apidoc perl_free
768 Releases a Perl interpreter. See L<perlembed>.
776 #if defined(PERL_OBJECT)
779 # if defined(PERL_IMPLICIT_SYS) && defined(WIN32)
780 void *host = w32_internal_host;
782 win32_delete_internal_host(host);
790 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
792 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
793 PL_exitlist[PL_exitlistlen].fn = fn;
794 PL_exitlist[PL_exitlistlen].ptr = ptr;
799 =for apidoc perl_parse
801 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
807 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
817 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
820 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
821 setuid perl scripts securely.\n");
825 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
826 _dyld_lookup_and_bind
827 ("__environ", (unsigned long *) &environ_pointer, NULL);
832 #ifndef VMS /* VMS doesn't have environ array */
833 PL_origenviron = environ;
838 /* Come here if running an undumped a.out. */
840 PL_origfilename = savepv(argv[0]);
841 PL_do_undump = FALSE;
842 cxstack_ix = -1; /* start label stack again */
844 init_postdump_symbols(argc,argv,env);
849 PL_curpad = AvARRAY(PL_comppad);
850 op_free(PL_main_root);
851 PL_main_root = Nullop;
853 PL_main_start = Nullop;
854 SvREFCNT_dec(PL_main_cv);
858 oldscope = PL_scopestack_ix;
859 PL_dowarn = G_WARN_OFF;
861 #ifdef PERL_FLEXIBLE_EXCEPTIONS
862 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
868 #ifndef PERL_FLEXIBLE_EXCEPTIONS
869 parse_body(env,xsinit);
872 call_list(oldscope, PL_checkav);
879 /* my_exit() was called */
880 while (PL_scopestack_ix > oldscope)
883 PL_curstash = PL_defstash;
885 call_list(oldscope, PL_checkav);
886 ret = STATUS_NATIVE_EXPORT;
889 PerlIO_printf(Perl_error_log, "panic: top_env\n");
897 #ifdef PERL_FLEXIBLE_EXCEPTIONS
899 S_vparse_body(pTHX_ va_list args)
901 char **env = va_arg(args, char**);
902 XSINIT_t xsinit = va_arg(args, XSINIT_t);
904 return parse_body(env, xsinit);
909 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
912 int argc = PL_origargc;
913 char **argv = PL_origargv;
914 char *scriptname = NULL;
916 VOL bool dosearch = FALSE;
921 char *cddir = Nullch;
923 sv_setpvn(PL_linestr,"",0);
924 sv = newSVpvn("",0); /* first used for -I flags */
928 for (argc--,argv++; argc > 0; argc--,argv++) {
929 if (argv[0][0] != '-' || !argv[0][1])
933 validarg = " PHOOEY ";
942 win32_argv2utf8(argc-1, argv+1);
945 #ifndef PERL_STRICT_CR
969 if ((s = moreswitches(s)))
979 #ifdef MACOS_TRADITIONAL
980 /* ignore -e for Dev:Pseudo argument */
981 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
984 if (PL_euid != PL_uid || PL_egid != PL_gid)
985 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
987 PL_e_script = newSVpvn("",0);
988 filter_add(read_e_script, NULL);
991 sv_catpv(PL_e_script, s);
993 sv_catpv(PL_e_script, argv[1]);
997 Perl_croak(aTHX_ "No code specified for -e");
998 sv_catpv(PL_e_script, "\n");
1001 case 'I': /* -I handled both here and in moreswitches() */
1003 if (!*++s && (s=argv[1]) != Nullch) {
1008 STRLEN len = strlen(s);
1009 p = savepvn(s, len);
1010 incpush(p, TRUE, TRUE);
1011 sv_catpvn(sv, "-I", 2);
1012 sv_catpvn(sv, p, len);
1013 sv_catpvn(sv, " ", 1);
1017 Perl_croak(aTHX_ "No directory specified for -I");
1021 PL_preprocess = TRUE;
1031 PL_preambleav = newAV();
1032 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1034 PL_Sv = newSVpv("print myconfig();",0);
1036 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1038 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1040 sv_catpv(PL_Sv,"\" Compile-time options:");
1042 sv_catpv(PL_Sv," DEBUGGING");
1044 # ifdef MULTIPLICITY
1045 sv_catpv(PL_Sv," MULTIPLICITY");
1048 sv_catpv(PL_Sv," USE_THREADS");
1050 # ifdef USE_ITHREADS
1051 sv_catpv(PL_Sv," USE_ITHREADS");
1053 # ifdef USE_64_BIT_INT
1054 sv_catpv(PL_Sv," USE_64_BIT_INT");
1056 # ifdef USE_64_BIT_ALL
1057 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1059 # ifdef USE_LONG_DOUBLE
1060 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1062 # ifdef USE_LARGE_FILES
1063 sv_catpv(PL_Sv," USE_LARGE_FILES");
1066 sv_catpv(PL_Sv," USE_SOCKS");
1069 sv_catpv(PL_Sv," PERL_OBJECT");
1071 # ifdef PERL_IMPLICIT_CONTEXT
1072 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1074 # ifdef PERL_IMPLICIT_SYS
1075 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1077 sv_catpv(PL_Sv,"\\n\",");
1079 #if defined(LOCAL_PATCH_COUNT)
1080 if (LOCAL_PATCH_COUNT > 0) {
1082 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1083 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1084 if (PL_localpatches[i])
1085 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1089 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1092 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1094 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1097 sv_catpv(PL_Sv, "; \
1099 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1100 print \" \\%ENV:\\n @env\\n\" if @env; \
1101 print \" \\@INC:\\n @INC\\n\";");
1104 PL_Sv = newSVpv("config_vars(qw(",0);
1105 sv_catpv(PL_Sv, ++s);
1106 sv_catpv(PL_Sv, "))");
1109 av_push(PL_preambleav, PL_Sv);
1110 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1113 PL_doextract = TRUE;
1121 if (!*++s || isSPACE(*s)) {
1125 /* catch use of gnu style long options */
1126 if (strEQ(s, "version")) {
1130 if (strEQ(s, "help")) {
1137 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1143 #ifndef SECURE_INTERNAL_GETENV
1146 (s = PerlEnv_getenv("PERL5OPT")))
1150 if (*s == '-' && *(s+1) == 'T')
1163 if (!strchr("DIMUdmw", *s))
1164 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1165 s = moreswitches(s);
1171 scriptname = argv[0];
1174 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1176 else if (scriptname == Nullch) {
1178 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1186 open_script(scriptname,dosearch,sv,&fdscript);
1188 validate_suid(validarg, scriptname,fdscript);
1190 #if defined(SIGCHLD) || defined(SIGCLD)
1193 # define SIGCHLD SIGCLD
1195 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1196 if (sigstate == SIG_IGN) {
1197 if (ckWARN(WARN_SIGNAL))
1198 Perl_warner(aTHX_ WARN_SIGNAL,
1199 "Can't ignore signal CHLD, forcing to default");
1200 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1205 #ifdef MACOS_TRADITIONAL
1206 if (PL_doextract || gMacPerl_AlwaysExtract) {
1211 if (cddir && PerlDir_chdir(cddir) < 0)
1212 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1216 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1217 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1218 CvUNIQUE_on(PL_compcv);
1220 PL_comppad = newAV();
1221 av_push(PL_comppad, Nullsv);
1222 PL_curpad = AvARRAY(PL_comppad);
1223 PL_comppad_name = newAV();
1224 PL_comppad_name_fill = 0;
1225 PL_min_intro_pending = 0;
1228 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1229 PL_curpad[0] = (SV*)newAV();
1230 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1231 CvOWNER(PL_compcv) = 0;
1232 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1233 MUTEX_INIT(CvMUTEXP(PL_compcv));
1234 #endif /* USE_THREADS */
1236 comppadlist = newAV();
1237 AvREAL_off(comppadlist);
1238 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1239 av_store(comppadlist, 1, (SV*)PL_comppad);
1240 CvPADLIST(PL_compcv) = comppadlist;
1242 boot_core_UNIVERSAL();
1244 boot_core_xsutils();
1248 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1249 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__)
1257 init_predump_symbols();
1258 /* init_postdump_symbols not currently designed to be called */
1259 /* more than once (ENV isn't cleared first, for example) */
1260 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1262 init_postdump_symbols(argc,argv,env);
1266 /* now parse the script */
1268 SETERRNO(0,SS$_NORMAL);
1270 #ifdef MACOS_TRADITIONAL
1271 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1273 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1275 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1276 MacPerl_MPWFileName(PL_origfilename));
1280 if (yyparse() || PL_error_count) {
1282 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1284 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1289 CopLINE_set(PL_curcop, 0);
1290 PL_curstash = PL_defstash;
1291 PL_preprocess = FALSE;
1293 SvREFCNT_dec(PL_e_script);
1294 PL_e_script = Nullsv;
1297 /* now that script is parsed, we can modify record separator */
1298 SvREFCNT_dec(PL_rs);
1299 PL_rs = SvREFCNT_inc(PL_nrs);
1300 sv_setsv(get_sv("/", TRUE), PL_rs);
1305 SAVECOPFILE(PL_curcop);
1306 SAVECOPLINE(PL_curcop);
1307 gv_check(PL_defstash);
1314 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1315 dump_mstats("after compilation:");
1324 =for apidoc perl_run
1326 Tells a Perl interpreter to run. See L<perlembed>.
1342 oldscope = PL_scopestack_ix;
1344 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1346 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1352 cxstack_ix = -1; /* start context stack again */
1354 case 0: /* normal completion */
1355 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1360 case 2: /* my_exit() */
1361 while (PL_scopestack_ix > oldscope)
1364 PL_curstash = PL_defstash;
1365 if (PL_endav && !PL_minus_c)
1366 call_list(oldscope, PL_endav);
1368 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1369 dump_mstats("after execution: ");
1371 ret = STATUS_NATIVE_EXPORT;
1375 POPSTACK_TO(PL_mainstack);
1378 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1388 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1390 S_vrun_body(pTHX_ va_list args)
1392 I32 oldscope = va_arg(args, I32);
1394 return run_body(oldscope);
1400 S_run_body(pTHX_ I32 oldscope)
1404 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1405 PL_sawampersand ? "Enabling" : "Omitting"));
1407 if (!PL_restartop) {
1408 DEBUG_x(dump_all());
1409 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1410 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1414 #ifdef MACOS_TRADITIONAL
1415 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1417 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1421 if (PERLDB_SINGLE && PL_DBsingle)
1422 sv_setiv(PL_DBsingle, 1);
1424 call_list(oldscope, PL_initav);
1430 PL_op = PL_restartop;
1434 else if (PL_main_start) {
1435 CvDEPTH(PL_main_cv) = 1;
1436 PL_op = PL_main_start;
1446 =for apidoc p||get_sv
1448 Returns the SV of the specified Perl scalar. If C<create> is set and the
1449 Perl variable does not exist then it will be created. If C<create> is not
1450 set and the variable does not exist then NULL is returned.
1456 Perl_get_sv(pTHX_ const char *name, I32 create)
1460 if (name[1] == '\0' && !isALPHA(name[0])) {
1461 PADOFFSET tmp = find_threadsv(name);
1462 if (tmp != NOT_IN_PAD) {
1464 return THREADSV(tmp);
1467 #endif /* USE_THREADS */
1468 gv = gv_fetchpv(name, create, SVt_PV);
1475 =for apidoc p||get_av
1477 Returns the AV of the specified Perl array. If C<create> is set and the
1478 Perl variable does not exist then it will be created. If C<create> is not
1479 set and the variable does not exist then NULL is returned.
1485 Perl_get_av(pTHX_ const char *name, I32 create)
1487 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1496 =for apidoc p||get_hv
1498 Returns the HV of the specified Perl hash. If C<create> is set and the
1499 Perl variable does not exist then it will be created. If C<create> is not
1500 set and the variable does not exist then NULL is returned.
1506 Perl_get_hv(pTHX_ const char *name, I32 create)
1508 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1517 =for apidoc p||get_cv
1519 Returns the CV of the specified Perl subroutine. If C<create> is set and
1520 the Perl subroutine does not exist then it will be declared (which has the
1521 same effect as saying C<sub name;>). If C<create> is not set and the
1522 subroutine does not exist then NULL is returned.
1528 Perl_get_cv(pTHX_ const char *name, I32 create)
1530 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1531 /* XXX unsafe for threads if eval_owner isn't held */
1532 /* XXX this is probably not what they think they're getting.
1533 * It has the same effect as "sub name;", i.e. just a forward
1535 if (create && !GvCVu(gv))
1536 return newSUB(start_subparse(FALSE, 0),
1537 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1545 /* Be sure to refetch the stack pointer after calling these routines. */
1548 =for apidoc p||call_argv
1550 Performs a callback to the specified Perl sub. See L<perlcall>.
1556 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1558 /* See G_* flags in cop.h */
1559 /* null terminated arg list */
1566 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1571 return call_pv(sub_name, flags);
1575 =for apidoc p||call_pv
1577 Performs a callback to the specified Perl sub. See L<perlcall>.
1583 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1584 /* name of the subroutine */
1585 /* See G_* flags in cop.h */
1587 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1591 =for apidoc p||call_method
1593 Performs a callback to the specified Perl method. The blessed object must
1594 be on the stack. See L<perlcall>.
1600 Perl_call_method(pTHX_ const char *methname, I32 flags)
1601 /* name of the subroutine */
1602 /* See G_* flags in cop.h */
1604 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1607 /* May be called with any of a CV, a GV, or an SV containing the name. */
1609 =for apidoc p||call_sv
1611 Performs a callback to the Perl sub whose name is in the SV. See
1618 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1619 /* See G_* flags in cop.h */
1622 LOGOP myop; /* fake syntax tree node */
1627 bool oldcatch = CATCH_GET;
1632 if (flags & G_DISCARD) {
1637 Zero(&myop, 1, LOGOP);
1638 myop.op_next = Nullop;
1639 if (!(flags & G_NOARGS))
1640 myop.op_flags |= OPf_STACKED;
1641 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1642 (flags & G_ARRAY) ? OPf_WANT_LIST :
1647 EXTEND(PL_stack_sp, 1);
1648 *++PL_stack_sp = sv;
1650 oldscope = PL_scopestack_ix;
1652 if (PERLDB_SUB && PL_curstash != PL_debstash
1653 /* Handle first BEGIN of -d. */
1654 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1655 /* Try harder, since this may have been a sighandler, thus
1656 * curstash may be meaningless. */
1657 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1658 && !(flags & G_NODEBUG))
1659 PL_op->op_private |= OPpENTERSUB_DB;
1661 if (flags & G_METHOD) {
1662 Zero(&method_op, 1, UNOP);
1663 method_op.op_next = PL_op;
1664 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1665 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1666 PL_op = (OP*)&method_op;
1669 if (!(flags & G_EVAL)) {
1671 call_body((OP*)&myop, FALSE);
1672 retval = PL_stack_sp - (PL_stack_base + oldmark);
1673 CATCH_SET(oldcatch);
1676 myop.op_other = (OP*)&myop;
1678 /* we're trying to emulate pp_entertry() here */
1680 register PERL_CONTEXT *cx;
1681 I32 gimme = GIMME_V;
1686 push_return(Nullop);
1687 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1689 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1691 PL_in_eval = EVAL_INEVAL;
1692 if (flags & G_KEEPERR)
1693 PL_in_eval |= EVAL_KEEPERR;
1699 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1701 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1708 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1710 call_body((OP*)&myop, FALSE);
1712 retval = PL_stack_sp - (PL_stack_base + oldmark);
1713 if (!(flags & G_KEEPERR))
1720 /* my_exit() was called */
1721 PL_curstash = PL_defstash;
1724 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1725 Perl_croak(aTHX_ "Callback called exit");
1730 PL_op = PL_restartop;
1734 PL_stack_sp = PL_stack_base + oldmark;
1735 if (flags & G_ARRAY)
1739 *++PL_stack_sp = &PL_sv_undef;
1744 if (PL_scopestack_ix > oldscope) {
1748 register PERL_CONTEXT *cx;
1760 if (flags & G_DISCARD) {
1761 PL_stack_sp = PL_stack_base + oldmark;
1770 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1772 S_vcall_body(pTHX_ va_list args)
1774 OP *myop = va_arg(args, OP*);
1775 int is_eval = va_arg(args, int);
1777 call_body(myop, is_eval);
1783 S_call_body(pTHX_ OP *myop, int is_eval)
1787 if (PL_op == myop) {
1789 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1791 PL_op = Perl_pp_entersub(aTHX); /* this does */
1797 /* Eval a string. The G_EVAL flag is always assumed. */
1800 =for apidoc p||eval_sv
1802 Tells Perl to C<eval> the string in the SV.
1808 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1810 /* See G_* flags in cop.h */
1813 UNOP myop; /* fake syntax tree node */
1814 I32 oldmark = SP - PL_stack_base;
1821 if (flags & G_DISCARD) {
1828 Zero(PL_op, 1, UNOP);
1829 EXTEND(PL_stack_sp, 1);
1830 *++PL_stack_sp = sv;
1831 oldscope = PL_scopestack_ix;
1833 if (!(flags & G_NOARGS))
1834 myop.op_flags = OPf_STACKED;
1835 myop.op_next = Nullop;
1836 myop.op_type = OP_ENTEREVAL;
1837 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1838 (flags & G_ARRAY) ? OPf_WANT_LIST :
1840 if (flags & G_KEEPERR)
1841 myop.op_flags |= OPf_SPECIAL;
1843 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1845 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1852 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1854 call_body((OP*)&myop,TRUE);
1856 retval = PL_stack_sp - (PL_stack_base + oldmark);
1857 if (!(flags & G_KEEPERR))
1864 /* my_exit() was called */
1865 PL_curstash = PL_defstash;
1868 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1869 Perl_croak(aTHX_ "Callback called exit");
1874 PL_op = PL_restartop;
1878 PL_stack_sp = PL_stack_base + oldmark;
1879 if (flags & G_ARRAY)
1883 *++PL_stack_sp = &PL_sv_undef;
1889 if (flags & G_DISCARD) {
1890 PL_stack_sp = PL_stack_base + oldmark;
1900 =for apidoc p||eval_pv
1902 Tells Perl to C<eval> the given string and return an SV* result.
1908 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1911 SV* sv = newSVpv(p, 0);
1913 eval_sv(sv, G_SCALAR);
1920 if (croak_on_error && SvTRUE(ERRSV)) {
1922 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1928 /* Require a module. */
1931 =for apidoc p||require_pv
1933 Tells Perl to C<require> a module.
1939 Perl_require_pv(pTHX_ const char *pv)
1943 PUSHSTACKi(PERLSI_REQUIRE);
1945 sv = sv_newmortal();
1946 sv_setpv(sv, "require '");
1949 eval_sv(sv, G_DISCARD);
1955 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
1959 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
1960 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1964 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
1966 /* This message really ought to be max 23 lines.
1967 * Removed -h because the user already knows that opton. Others? */
1969 static char *usage_msg[] = {
1970 "-0[octal] specify record separator (\\0, if no argument)",
1971 "-a autosplit mode with -n or -p (splits $_ into @F)",
1972 "-C enable native wide character system interfaces",
1973 "-c check syntax only (runs BEGIN and CHECK blocks)",
1974 "-d[:debugger] run program under debugger",
1975 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1976 "-e 'command' one line of program (several -e's allowed, omit programfile)",
1977 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
1978 "-i[extension] edit <> files in place (makes backup if extension supplied)",
1979 "-Idirectory specify @INC/#include directory (several -I's allowed)",
1980 "-l[octal] enable line ending processing, specifies line terminator",
1981 "-[mM][-]module execute `use/no module...' before executing program",
1982 "-n assume 'while (<>) { ... }' loop around program",
1983 "-p assume loop like -n but print line also, like sed",
1984 "-P run program through C preprocessor before compilation",
1985 "-s enable rudimentary parsing for switches after programfile",
1986 "-S look for programfile using PATH environment variable",
1987 "-T enable tainting checks",
1988 "-u dump core after parsing program",
1989 "-U allow unsafe operations",
1990 "-v print version, subversion (includes VERY IMPORTANT perl info)",
1991 "-V[:variable] print configuration summary (or a single Config.pm variable)",
1992 "-w enable many useful warnings (RECOMMENDED)",
1993 "-W enable all warnings",
1994 "-X disable all warnings",
1995 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
1999 char **p = usage_msg;
2001 PerlIO_printf(PerlIO_stdout(),
2002 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2005 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2008 /* This routine handles any switches that can be given during run */
2011 Perl_moreswitches(pTHX_ char *s)
2020 numlen = 0; /* disallow underscores */
2021 rschar = (U32)scan_oct(s, 4, &numlen);
2022 SvREFCNT_dec(PL_nrs);
2023 if (rschar & ~((U8)~0))
2024 PL_nrs = &PL_sv_undef;
2025 else if (!rschar && numlen >= 2)
2026 PL_nrs = newSVpvn("", 0);
2029 PL_nrs = newSVpvn(&ch, 1);
2034 PL_widesyscalls = TRUE;
2039 PL_splitstr = savepv(s + 1);
2053 if (*s == ':' || *s == '=') {
2054 my_setenv("PERL5DB", Perl_form(aTHX_ "use Devel::%s;", ++s));
2058 PL_perldb = PERLDB_ALL;
2066 if (isALPHA(s[1])) {
2067 static char debopts[] = "psltocPmfrxuLHXDS";
2070 for (s++; *s && (d = strchr(debopts,*s)); s++)
2071 PL_debug |= 1 << (d - debopts);
2074 PL_debug = atoi(s+1);
2075 for (s++; isDIGIT(*s); s++) ;
2077 PL_debug |= 0x80000000;
2080 if (ckWARN_d(WARN_DEBUGGING))
2081 Perl_warner(aTHX_ WARN_DEBUGGING,
2082 "Recompile perl with -DDEBUGGING to use -D switch\n");
2083 for (s++; isALNUM(*s); s++) ;
2089 usage(PL_origargv[0]);
2093 Safefree(PL_inplace);
2094 PL_inplace = savepv(s+1);
2096 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2099 if (*s == '-') /* Additional switches on #! line. */
2103 case 'I': /* -I handled both here and in parse_perl() */
2106 while (*s && isSPACE(*s))
2111 /* ignore trailing spaces (possibly followed by other switches) */
2113 for (e = p; *e && !isSPACE(*e); e++) ;
2117 } while (*p && *p != '-');
2118 e = savepvn(s, e-s);
2119 incpush(e, TRUE, TRUE);
2126 Perl_croak(aTHX_ "No directory specified for -I");
2134 PL_ors = savepv("\n");
2136 numlen = 0; /* disallow underscores */
2137 *PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2142 if (RsPARA(PL_nrs)) {
2147 PL_ors = SvPV(PL_nrs, PL_orslen);
2148 PL_ors = savepvn(PL_ors, PL_orslen);
2152 forbid_setid("-M"); /* XXX ? */
2155 forbid_setid("-m"); /* XXX ? */
2160 /* -M-foo == 'no foo' */
2161 if (*s == '-') { use = "no "; ++s; }
2162 sv = newSVpv(use,0);
2164 /* We allow -M'Module qw(Foo Bar)' */
2165 while(isALNUM(*s) || *s==':') ++s;
2167 sv_catpv(sv, start);
2168 if (*(start-1) == 'm') {
2170 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2171 sv_catpv( sv, " ()");
2175 Perl_croak(aTHX_ "Module name required with -%c option",
2177 sv_catpvn(sv, start, s-start);
2178 sv_catpv(sv, " split(/,/,q{");
2184 PL_preambleav = newAV();
2185 av_push(PL_preambleav, sv);
2188 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2200 PL_doswitches = TRUE;
2205 Perl_croak(aTHX_ "Too late for \"-T\" option");
2209 #ifdef MACOS_TRADITIONAL
2210 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2212 PL_do_undump = TRUE;
2220 PerlIO_printf(PerlIO_stdout(),
2221 Perl_form(aTHX_ "\nThis is perl, v%vd built for %s",
2222 PL_patchlevel, ARCHNAME));
2223 #if defined(LOCAL_PATCH_COUNT)
2224 if (LOCAL_PATCH_COUNT > 0)
2225 PerlIO_printf(PerlIO_stdout(),
2226 "\n(with %d registered patch%s, "
2227 "see perl -V for more detail)",
2228 (int)LOCAL_PATCH_COUNT,
2229 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2232 PerlIO_printf(PerlIO_stdout(),
2233 "\n\nCopyright 1987-2000, Larry Wall\n");
2235 PerlIO_printf(PerlIO_stdout(),
2236 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2239 PerlIO_printf(PerlIO_stdout(),
2240 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2241 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2244 PerlIO_printf(PerlIO_stdout(),
2245 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2246 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2249 PerlIO_printf(PerlIO_stdout(),
2250 "atariST series port, ++jrb bammi@cadence.com\n");
2253 PerlIO_printf(PerlIO_stdout(),
2254 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2257 PerlIO_printf(PerlIO_stdout(),
2258 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
2261 PerlIO_printf(PerlIO_stdout(),
2262 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2265 PerlIO_printf(PerlIO_stdout(),
2266 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2269 PerlIO_printf(PerlIO_stdout(),
2270 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2273 PerlIO_printf(PerlIO_stdout(),
2274 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2277 PerlIO_printf(PerlIO_stdout(),
2278 "MiNT port by Guido Flohr, 1997-1999\n");
2281 PerlIO_printf(PerlIO_stdout(),
2282 "EPOC port by Olaf Flebbe, 1999-2000\n");
2284 #ifdef BINARY_BUILD_NOTICE
2285 BINARY_BUILD_NOTICE;
2287 PerlIO_printf(PerlIO_stdout(),
2289 Perl may be copied only under the terms of either the Artistic License or the\n\
2290 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
2291 Complete documentation for Perl, including FAQ lists, should be found on\n\
2292 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2293 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2296 if (! (PL_dowarn & G_WARN_ALL_MASK))
2297 PL_dowarn |= G_WARN_ON;
2301 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2302 PL_compiling.cop_warnings = pWARN_ALL ;
2306 PL_dowarn = G_WARN_ALL_OFF;
2307 PL_compiling.cop_warnings = pWARN_NONE ;
2312 if (s[1] == '-') /* Additional switches on #! line. */
2317 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2323 #ifdef ALTERNATE_SHEBANG
2324 case 'S': /* OS/2 needs -S on "extproc" line. */
2332 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2337 /* compliments of Tom Christiansen */
2339 /* unexec() can be found in the Gnu emacs distribution */
2340 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2343 Perl_my_unexec(pTHX)
2351 prog = newSVpv(BIN_EXP, 0);
2352 sv_catpv(prog, "/perl");
2353 file = newSVpv(PL_origfilename, 0);
2354 sv_catpv(file, ".perldump");
2356 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2357 /* unexec prints msg to stderr in case of failure */
2358 PerlProc_exit(status);
2361 # include <lib$routines.h>
2362 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2364 ABORT(); /* for use with undump */
2369 /* initialize curinterp */
2374 #ifdef PERL_OBJECT /* XXX kludge */
2377 PL_chopset = " \n-"; \
2378 PL_copline = NOLINE; \
2379 PL_curcop = &PL_compiling;\
2380 PL_curcopdb = NULL; \
2382 PL_dumpindent = 4; \
2383 PL_laststatval = -1; \
2384 PL_laststype = OP_STAT; \
2385 PL_maxscream = -1; \
2386 PL_maxsysfd = MAXSYSFD; \
2387 PL_statname = Nullsv; \
2388 PL_tmps_floor = -1; \
2390 PL_op_mask = NULL; \
2391 PL_laststatval = -1; \
2392 PL_laststype = OP_STAT; \
2393 PL_mess_sv = Nullsv; \
2394 PL_splitstr = " "; \
2395 PL_generation = 100; \
2396 PL_exitlist = NULL; \
2397 PL_exitlistlen = 0; \
2399 PL_in_clean_objs = FALSE; \
2400 PL_in_clean_all = FALSE; \
2401 PL_profiledata = NULL; \
2403 PL_rsfp_filters = Nullav; \
2408 # ifdef MULTIPLICITY
2409 # define PERLVAR(var,type)
2410 # define PERLVARA(var,n,type)
2411 # if defined(PERL_IMPLICIT_CONTEXT)
2412 # if defined(USE_THREADS)
2413 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2414 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2415 # else /* !USE_THREADS */
2416 # define PERLVARI(var,type,init) aTHX->var = init;
2417 # define PERLVARIC(var,type,init) aTHX->var = init;
2418 # endif /* USE_THREADS */
2420 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2421 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2423 # include "intrpvar.h"
2424 # ifndef USE_THREADS
2425 # include "thrdvar.h"
2432 # define PERLVAR(var,type)
2433 # define PERLVARA(var,n,type)
2434 # define PERLVARI(var,type,init) PL_##var = init;
2435 # define PERLVARIC(var,type,init) PL_##var = init;
2436 # include "intrpvar.h"
2437 # ifndef USE_THREADS
2438 # include "thrdvar.h"
2450 S_init_main_stash(pTHX)
2455 /* Note that strtab is a rather special HV. Assumptions are made
2456 about not iterating on it, and not adding tie magic to it.
2457 It is properly deallocated in perl_destruct() */
2458 PL_strtab = newHV();
2460 MUTEX_INIT(&PL_strtab_mutex);
2462 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2463 hv_ksplit(PL_strtab, 512);
2465 PL_curstash = PL_defstash = newHV();
2466 PL_curstname = newSVpvn("main",4);
2467 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2468 SvREFCNT_dec(GvHV(gv));
2469 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2471 HvNAME(PL_defstash) = savepv("main");
2472 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2473 GvMULTI_on(PL_incgv);
2474 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2475 GvMULTI_on(PL_hintgv);
2476 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2477 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2478 GvMULTI_on(PL_errgv);
2479 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2480 GvMULTI_on(PL_replgv);
2481 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2482 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2483 sv_setpvn(ERRSV, "", 0);
2484 PL_curstash = PL_defstash;
2485 CopSTASH_set(&PL_compiling, PL_defstash);
2486 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2487 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2488 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2489 /* We must init $/ before switches are processed. */
2490 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2494 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2501 PL_origfilename = savepv("-e");
2504 /* if find_script() returns, it returns a malloc()-ed value */
2505 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2507 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2508 char *s = scriptname + 8;
2509 *fdscript = atoi(s);
2513 scriptname = savepv(s + 1);
2514 Safefree(PL_origfilename);
2515 PL_origfilename = scriptname;
2521 Safefree(CopFILE(PL_curcop));
2523 SvREFCNT_dec(CopFILEGV(PL_curcop));
2525 CopFILE_set(PL_curcop, PL_origfilename);
2526 if (strEQ(PL_origfilename,"-"))
2528 if (*fdscript >= 0) {
2529 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2530 #if defined(HAS_FCNTL) && defined(F_SETFD)
2532 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2535 else if (PL_preprocess) {
2536 char *cpp_cfg = CPPSTDIN;
2537 SV *cpp = newSVpvn("",0);
2538 SV *cmd = NEWSV(0,0);
2540 if (strEQ(cpp_cfg, "cppstdin"))
2541 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2542 sv_catpv(cpp, cpp_cfg);
2544 sv_catpvn(sv, "-I", 2);
2545 sv_catpv(sv,PRIVLIB_EXP);
2547 #if defined(MSDOS) || defined(WIN32)
2548 Perl_sv_setpvf(aTHX_ cmd, "\
2549 sed %s -e \"/^[^#]/b\" \
2550 -e \"/^#[ ]*include[ ]/b\" \
2551 -e \"/^#[ ]*define[ ]/b\" \
2552 -e \"/^#[ ]*if[ ]/b\" \
2553 -e \"/^#[ ]*ifdef[ ]/b\" \
2554 -e \"/^#[ ]*ifndef[ ]/b\" \
2555 -e \"/^#[ ]*else/b\" \
2556 -e \"/^#[ ]*elif[ ]/b\" \
2557 -e \"/^#[ ]*undef[ ]/b\" \
2558 -e \"/^#[ ]*endif/b\" \
2560 %s | %"SVf" -C %"SVf" %s",
2561 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2564 Perl_sv_setpvf(aTHX_ cmd, "\
2565 %s %s -e '/^[^#]/b' \
2566 -e '/^#[ ]*include[ ]/b' \
2567 -e '/^#[ ]*define[ ]/b' \
2568 -e '/^#[ ]*if[ ]/b' \
2569 -e '/^#[ ]*ifdef[ ]/b' \
2570 -e '/^#[ ]*ifndef[ ]/b' \
2571 -e '/^#[ ]*else/b' \
2572 -e '/^#[ ]*elif[ ]/b' \
2573 -e '/^#[ ]*undef[ ]/b' \
2574 -e '/^#[ ]*endif/b' \
2576 %s | %"SVf" %"SVf" %s",
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" -C %"SVf" %s",
2597 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2599 scriptname, cpp, sv, CPPMINUS);
2600 PL_doextract = FALSE;
2601 #ifdef IAMSUID /* actually, this is caught earlier */
2602 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2604 (void)seteuid(PL_uid); /* musn't stay setuid root */
2607 (void)setreuid((Uid_t)-1, PL_uid);
2609 #ifdef HAS_SETRESUID
2610 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2612 PerlProc_setuid(PL_uid);
2616 if (PerlProc_geteuid() != PL_uid)
2617 Perl_croak(aTHX_ "Can't do seteuid!\n");
2619 #endif /* IAMSUID */
2620 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2624 else if (!*scriptname) {
2625 forbid_setid("program input from stdin");
2626 PL_rsfp = PerlIO_stdin();
2629 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2630 #if defined(HAS_FCNTL) && defined(F_SETFD)
2632 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2637 #ifndef IAMSUID /* in case script is not readable before setuid */
2639 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2640 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2643 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2644 (int)PERL_REVISION, (int)PERL_VERSION,
2645 (int)PERL_SUBVERSION), PL_origargv);
2646 Perl_croak(aTHX_ "Can't do setuid\n");
2650 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2651 CopFILE(PL_curcop), Strerror(errno));
2656 * I_SYSSTATVFS HAS_FSTATVFS
2658 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2659 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2660 * here so that metaconfig picks them up. */
2664 S_fd_on_nosuid_fs(pTHX_ int fd)
2666 int check_okay = 0; /* able to do all the required sys/libcalls */
2667 int on_nosuid = 0; /* the fd is on a nosuid fs */
2669 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2670 * fstatvfs() is UNIX98.
2671 * fstatfs() is 4.3 BSD.
2672 * ustat()+getmnt() is pre-4.3 BSD.
2673 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2674 * an irrelevant filesystem while trying to reach the right one.
2677 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2679 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2680 defined(HAS_FSTATVFS)
2681 # define FD_ON_NOSUID_CHECK_OKAY
2682 struct statvfs stfs;
2684 check_okay = fstatvfs(fd, &stfs) == 0;
2685 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2686 # endif /* fstatvfs */
2688 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2689 defined(PERL_MOUNT_NOSUID) && \
2690 defined(HAS_FSTATFS) && \
2691 defined(HAS_STRUCT_STATFS) && \
2692 defined(HAS_STRUCT_STATFS_F_FLAGS)
2693 # define FD_ON_NOSUID_CHECK_OKAY
2696 check_okay = fstatfs(fd, &stfs) == 0;
2697 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2698 # endif /* fstatfs */
2700 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2701 defined(PERL_MOUNT_NOSUID) && \
2702 defined(HAS_FSTAT) && \
2703 defined(HAS_USTAT) && \
2704 defined(HAS_GETMNT) && \
2705 defined(HAS_STRUCT_FS_DATA) && \
2707 # define FD_ON_NOSUID_CHECK_OKAY
2710 if (fstat(fd, &fdst) == 0) {
2712 if (ustat(fdst.st_dev, &us) == 0) {
2714 /* NOSTAT_ONE here because we're not examining fields which
2715 * vary between that case and STAT_ONE. */
2716 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2717 size_t cmplen = sizeof(us.f_fname);
2718 if (sizeof(fsd.fd_req.path) < cmplen)
2719 cmplen = sizeof(fsd.fd_req.path);
2720 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2721 fdst.st_dev == fsd.fd_req.dev) {
2723 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2729 # endif /* fstat+ustat+getmnt */
2731 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2732 defined(HAS_GETMNTENT) && \
2733 defined(HAS_HASMNTOPT) && \
2734 defined(MNTOPT_NOSUID)
2735 # define FD_ON_NOSUID_CHECK_OKAY
2736 FILE *mtab = fopen("/etc/mtab", "r");
2737 struct mntent *entry;
2738 struct stat stb, fsb;
2740 if (mtab && (fstat(fd, &stb) == 0)) {
2741 while (entry = getmntent(mtab)) {
2742 if (stat(entry->mnt_dir, &fsb) == 0
2743 && fsb.st_dev == stb.st_dev)
2745 /* found the filesystem */
2747 if (hasmntopt(entry, MNTOPT_NOSUID))
2750 } /* A single fs may well fail its stat(). */
2755 # endif /* getmntent+hasmntopt */
2758 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2761 #endif /* IAMSUID */
2764 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2770 /* do we need to emulate setuid on scripts? */
2772 /* This code is for those BSD systems that have setuid #! scripts disabled
2773 * in the kernel because of a security problem. Merely defining DOSUID
2774 * in perl will not fix that problem, but if you have disabled setuid
2775 * scripts in the kernel, this will attempt to emulate setuid and setgid
2776 * on scripts that have those now-otherwise-useless bits set. The setuid
2777 * root version must be called suidperl or sperlN.NNN. If regular perl
2778 * discovers that it has opened a setuid script, it calls suidperl with
2779 * the same argv that it had. If suidperl finds that the script it has
2780 * just opened is NOT setuid root, it sets the effective uid back to the
2781 * uid. We don't just make perl setuid root because that loses the
2782 * effective uid we had before invoking perl, if it was different from the
2785 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2786 * be defined in suidperl only. suidperl must be setuid root. The
2787 * Configure script will set this up for you if you want it.
2794 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2795 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2796 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2801 #ifndef HAS_SETREUID
2802 /* On this access check to make sure the directories are readable,
2803 * there is actually a small window that the user could use to make
2804 * filename point to an accessible directory. So there is a faint
2805 * chance that someone could execute a setuid script down in a
2806 * non-accessible directory. I don't know what to do about that.
2807 * But I don't think it's too important. The manual lies when
2808 * it says access() is useful in setuid programs.
2810 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2811 Perl_croak(aTHX_ "Permission denied");
2813 /* If we can swap euid and uid, then we can determine access rights
2814 * with a simple stat of the file, and then compare device and
2815 * inode to make sure we did stat() on the same file we opened.
2816 * Then we just have to make sure he or she can execute it.
2819 struct stat tmpstatbuf;
2823 setreuid(PL_euid,PL_uid) < 0
2826 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2829 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2830 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2831 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2832 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2833 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2834 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2835 Perl_croak(aTHX_ "Permission denied");
2837 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2838 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2839 (void)PerlIO_close(PL_rsfp);
2840 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2841 PerlIO_printf(PL_rsfp,
2842 "User %"Uid_t_f" tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2843 (Filename of set-id script was %s, uid %"Uid_t_f" gid %"Gid_t_f".)\n\nSincerely,\nperl\n",
2844 PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2845 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
2847 PL_statbuf.st_uid, PL_statbuf.st_gid);
2848 (void)PerlProc_pclose(PL_rsfp);
2850 Perl_croak(aTHX_ "Permission denied\n");
2854 setreuid(PL_uid,PL_euid) < 0
2856 # if defined(HAS_SETRESUID)
2857 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2860 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2861 Perl_croak(aTHX_ "Can't reswap uid and euid");
2862 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2863 Perl_croak(aTHX_ "Permission denied\n");
2865 #endif /* HAS_SETREUID */
2866 #endif /* IAMSUID */
2868 if (!S_ISREG(PL_statbuf.st_mode))
2869 Perl_croak(aTHX_ "Permission denied");
2870 if (PL_statbuf.st_mode & S_IWOTH)
2871 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2872 PL_doswitches = FALSE; /* -s is insecure in suid */
2873 CopLINE_inc(PL_curcop);
2874 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2875 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2876 Perl_croak(aTHX_ "No #! line");
2877 s = SvPV(PL_linestr,n_a)+2;
2879 while (!isSPACE(*s)) s++;
2880 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2881 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2882 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2883 Perl_croak(aTHX_ "Not a perl script");
2884 while (*s == ' ' || *s == '\t') s++;
2886 * #! arg must be what we saw above. They can invoke it by
2887 * mentioning suidperl explicitly, but they may not add any strange
2888 * arguments beyond what #! says if they do invoke suidperl that way.
2890 len = strlen(validarg);
2891 if (strEQ(validarg," PHOOEY ") ||
2892 strnNE(s,validarg,len) || !isSPACE(s[len]))
2893 Perl_croak(aTHX_ "Args must match #! line");
2896 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2897 PL_euid == PL_statbuf.st_uid)
2899 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2900 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2901 #endif /* IAMSUID */
2903 if (PL_euid) { /* oops, we're not the setuid root perl */
2904 (void)PerlIO_close(PL_rsfp);
2907 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2908 (int)PERL_REVISION, (int)PERL_VERSION,
2909 (int)PERL_SUBVERSION), PL_origargv);
2911 Perl_croak(aTHX_ "Can't do setuid\n");
2914 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2916 (void)setegid(PL_statbuf.st_gid);
2919 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2921 #ifdef HAS_SETRESGID
2922 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2924 PerlProc_setgid(PL_statbuf.st_gid);
2928 if (PerlProc_getegid() != PL_statbuf.st_gid)
2929 Perl_croak(aTHX_ "Can't do setegid!\n");
2931 if (PL_statbuf.st_mode & S_ISUID) {
2932 if (PL_statbuf.st_uid != PL_euid)
2934 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2937 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2939 #ifdef HAS_SETRESUID
2940 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2942 PerlProc_setuid(PL_statbuf.st_uid);
2946 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2947 Perl_croak(aTHX_ "Can't do seteuid!\n");
2949 else if (PL_uid) { /* oops, mustn't run as root */
2951 (void)seteuid((Uid_t)PL_uid);
2954 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2956 #ifdef HAS_SETRESUID
2957 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2959 PerlProc_setuid((Uid_t)PL_uid);
2963 if (PerlProc_geteuid() != PL_uid)
2964 Perl_croak(aTHX_ "Can't do seteuid!\n");
2967 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2968 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
2971 else if (PL_preprocess)
2972 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
2973 else if (fdscript >= 0)
2974 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
2976 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
2978 /* We absolutely must clear out any saved ids here, so we */
2979 /* exec the real perl, substituting fd script for scriptname. */
2980 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2981 PerlIO_rewind(PL_rsfp);
2982 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2983 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2984 if (!PL_origargv[which])
2985 Perl_croak(aTHX_ "Permission denied");
2986 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
2987 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
2988 #if defined(HAS_FCNTL) && defined(F_SETFD)
2989 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
2991 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
2992 (int)PERL_REVISION, (int)PERL_VERSION,
2993 (int)PERL_SUBVERSION), PL_origargv);/* try again */
2994 Perl_croak(aTHX_ "Can't do setuid\n");
2995 #endif /* IAMSUID */
2997 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
2998 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3000 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3001 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3003 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3006 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3007 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3008 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3009 /* not set-id, must be wrapped */
3015 S_find_beginning(pTHX)
3017 register char *s, *s2;
3019 /* skip forward in input to the real script? */
3022 #ifdef MACOS_TRADITIONAL
3023 /* Since the Mac OS does not honor !# arguments for us, we do it ourselves */
3025 while (PL_doextract || gMacPerl_AlwaysExtract) {
3026 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3027 if (!gMacPerl_AlwaysExtract)
3028 Perl_croak(aTHX_ "No Perl script found in input\n");
3030 if (PL_doextract) /* require explicit override ? */
3031 if (!OverrideExtract(PL_origfilename))
3032 Perl_croak(aTHX_ "User aborted script\n");
3034 PL_doextract = FALSE;
3036 /* Pater peccavi, file does not have #! */
3037 PerlIO_rewind(PL_rsfp);
3042 while (PL_doextract) {
3043 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3044 Perl_croak(aTHX_ "No Perl script found in input\n");
3046 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3047 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3048 PL_doextract = FALSE;
3049 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3051 while (*s == ' ' || *s == '\t') s++;
3053 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3054 if (strnEQ(s2-4,"perl",4))
3056 while ((s = moreswitches(s)))
3067 PL_uid = PerlProc_getuid();
3068 PL_euid = PerlProc_geteuid();
3069 PL_gid = PerlProc_getgid();
3070 PL_egid = PerlProc_getegid();
3072 PL_uid |= PL_gid << 16;
3073 PL_euid |= PL_egid << 16;
3075 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3079 S_forbid_setid(pTHX_ char *s)
3081 if (PL_euid != PL_uid)
3082 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3083 if (PL_egid != PL_gid)
3084 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3088 Perl_init_debugger(pTHX)
3091 HV *ostash = PL_curstash;
3093 PL_curstash = PL_debstash;
3094 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3095 AvREAL_off(PL_dbargs);
3096 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3097 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3098 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3099 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3100 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3101 sv_setiv(PL_DBsingle, 0);
3102 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3103 sv_setiv(PL_DBtrace, 0);
3104 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3105 sv_setiv(PL_DBsignal, 0);
3106 PL_curstash = ostash;
3109 #ifndef STRESS_REALLOC
3110 #define REASONABLE(size) (size)
3112 #define REASONABLE(size) (1) /* unreasonable */
3116 Perl_init_stacks(pTHX)
3118 /* start with 128-item stack and 8K cxstack */
3119 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3120 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3121 PL_curstackinfo->si_type = PERLSI_MAIN;
3122 PL_curstack = PL_curstackinfo->si_stack;
3123 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3125 PL_stack_base = AvARRAY(PL_curstack);
3126 PL_stack_sp = PL_stack_base;
3127 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3129 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3132 PL_tmps_max = REASONABLE(128);
3134 New(54,PL_markstack,REASONABLE(32),I32);
3135 PL_markstack_ptr = PL_markstack;
3136 PL_markstack_max = PL_markstack + REASONABLE(32);
3140 New(54,PL_scopestack,REASONABLE(32),I32);
3141 PL_scopestack_ix = 0;
3142 PL_scopestack_max = REASONABLE(32);
3144 New(54,PL_savestack,REASONABLE(128),ANY);
3145 PL_savestack_ix = 0;
3146 PL_savestack_max = REASONABLE(128);
3148 New(54,PL_retstack,REASONABLE(16),OP*);
3150 PL_retstack_max = REASONABLE(16);
3159 while (PL_curstackinfo->si_next)
3160 PL_curstackinfo = PL_curstackinfo->si_next;
3161 while (PL_curstackinfo) {
3162 PERL_SI *p = PL_curstackinfo->si_prev;
3163 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3164 Safefree(PL_curstackinfo->si_cxstack);
3165 Safefree(PL_curstackinfo);
3166 PL_curstackinfo = p;
3168 Safefree(PL_tmps_stack);
3169 Safefree(PL_markstack);
3170 Safefree(PL_scopestack);
3171 Safefree(PL_savestack);
3172 Safefree(PL_retstack);
3176 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3187 lex_start(PL_linestr);
3189 PL_subname = newSVpvn("main",4);
3193 S_init_predump_symbols(pTHX)
3199 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3200 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3201 GvMULTI_on(PL_stdingv);
3202 io = GvIOp(PL_stdingv);
3203 IoIFP(io) = PerlIO_stdin();
3204 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3206 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3208 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3211 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3213 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3215 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3217 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3218 GvMULTI_on(PL_stderrgv);
3219 io = GvIOp(PL_stderrgv);
3220 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3221 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3223 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3225 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3228 Safefree(PL_osname);
3229 PL_osname = savepv(OSNAME);
3233 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3240 argc--,argv++; /* skip name of script */
3241 if (PL_doswitches) {
3242 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3245 if (argv[0][1] == '-' && !argv[0][2]) {
3249 if ((s = strchr(argv[0], '='))) {
3251 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3254 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3257 PL_toptarget = NEWSV(0,0);
3258 sv_upgrade(PL_toptarget, SVt_PVFM);
3259 sv_setpvn(PL_toptarget, "", 0);
3260 PL_bodytarget = NEWSV(0,0);
3261 sv_upgrade(PL_bodytarget, SVt_PVFM);
3262 sv_setpvn(PL_bodytarget, "", 0);
3263 PL_formtarget = PL_bodytarget;
3266 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3267 #ifdef MACOS_TRADITIONAL
3268 /* $0 is not majick on a Mac */
3269 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3271 sv_setpv(GvSV(tmpgv),PL_origfilename);
3272 magicname("0", "0", 1);
3275 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3277 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3279 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3281 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3282 GvMULTI_on(PL_argvgv);
3283 (void)gv_AVadd(PL_argvgv);
3284 av_clear(GvAVn(PL_argvgv));
3285 for (; argc > 0; argc--,argv++) {
3286 SV *sv = newSVpv(argv[0],0);
3287 av_push(GvAVn(PL_argvgv),sv);
3288 if (PL_widesyscalls)
3289 (void)sv_utf8_decode(sv);
3292 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3294 GvMULTI_on(PL_envgv);
3295 hv = GvHVn(PL_envgv);
3296 hv_magic(hv, PL_envgv, 'E');
3297 #if !defined( VMS) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) /* VMS doesn't have environ array */
3298 /* Note that if the supplied env parameter is actually a copy
3299 of the global environ then it may now point to free'd memory
3300 if the environment has been modified since. To avoid this
3301 problem we treat env==NULL as meaning 'use the default'
3306 environ[0] = Nullch;
3307 for (; *env; env++) {
3308 if (!(s = strchr(*env,'=')))
3314 sv = newSVpv(s--,0);
3315 (void)hv_store(hv, *env, s - *env, sv, 0);
3317 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3318 /* Sins of the RTL. See note in my_setenv(). */
3319 (void)PerlEnv_putenv(savepv(*env));
3323 #ifdef DYNAMIC_ENV_FETCH
3324 HvNAME(hv) = savepv(ENV_HV_NAME);
3328 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3329 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3333 S_init_perllib(pTHX)
3338 s = PerlEnv_getenv("PERL5LIB");
3340 incpush(s, TRUE, TRUE);
3342 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3344 /* Treat PERL5?LIB as a possible search list logical name -- the
3345 * "natural" VMS idiom for a Unix path string. We allow each
3346 * element to be a set of |-separated directories for compatibility.
3350 if (my_trnlnm("PERL5LIB",buf,0))
3351 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3353 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3357 /* Use the ~-expanded versions of APPLLIB (undocumented),
3358 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3361 incpush(APPLLIB_EXP, TRUE, TRUE);
3365 incpush(ARCHLIB_EXP, FALSE, FALSE);
3367 #ifdef MACOS_TRADITIONAL
3369 struct stat tmpstatbuf;
3370 SV * privdir = NEWSV(55, 0);
3371 char * macperl = PerlEnv_getenv("MACPERL");
3376 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3377 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3378 incpush(SvPVX(privdir), TRUE, FALSE);
3379 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3380 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3381 incpush(SvPVX(privdir), TRUE, FALSE);
3383 SvREFCNT_dec(privdir);
3386 incpush(":", FALSE, FALSE);
3389 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3392 incpush(PRIVLIB_EXP, TRUE, FALSE);
3394 incpush(PRIVLIB_EXP, FALSE, FALSE);
3398 /* sitearch is always relative to sitelib on Windows for
3399 * DLL-based path intuition to work correctly */
3400 # if !defined(WIN32)
3401 incpush(SITEARCH_EXP, FALSE, FALSE);
3407 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3409 incpush(SITELIB_EXP, FALSE, FALSE);
3413 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3414 incpush(SITELIB_STEM, FALSE, TRUE);
3417 #ifdef PERL_VENDORARCH_EXP
3418 /* vendorarch is always relative to vendorlib on Windows for
3419 * DLL-based path intuition to work correctly */
3420 # if !defined(WIN32)
3421 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3425 #ifdef PERL_VENDORLIB_EXP
3427 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3429 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3433 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3434 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3437 #ifdef PERL_OTHERLIBDIRS
3438 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3442 incpush(".", FALSE, FALSE);
3443 #endif /* MACOS_TRADITIONAL */
3447 # define PERLLIB_SEP ';'
3450 # define PERLLIB_SEP '|'
3452 # if defined(MACOS_TRADITIONAL)
3453 # define PERLLIB_SEP ','
3455 # define PERLLIB_SEP ':'
3459 #ifndef PERLLIB_MANGLE
3460 # define PERLLIB_MANGLE(s,n) (s)
3464 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3466 SV *subdir = Nullsv;
3471 if (addsubdirs || addoldvers) {
3472 subdir = sv_newmortal();
3475 /* Break at all separators */
3477 SV *libdir = NEWSV(55,0);
3480 /* skip any consecutive separators */
3481 while ( *p == PERLLIB_SEP ) {
3482 /* Uncomment the next line for PATH semantics */
3483 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3487 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3488 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3493 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3494 p = Nullch; /* break out */
3496 #ifdef MACOS_TRADITIONAL
3497 if (!strchr(SvPVX(libdir), ':'))
3498 sv_insert(libdir, 0, 0, ":", 1);
3499 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3500 sv_catpv(libdir, ":");
3504 * BEFORE pushing libdir onto @INC we may first push version- and
3505 * archname-specific sub-directories.
3507 if (addsubdirs || addoldvers) {
3508 #ifdef PERL_INC_VERSION_LIST
3509 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3510 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3511 const char **incver;
3513 struct stat tmpstatbuf;
3518 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3520 while (unix[len-1] == '/') len--; /* Cosmetic */
3521 sv_usepvn(libdir,unix,len);
3524 PerlIO_printf(Perl_error_log,
3525 "Failed to unixify @INC element \"%s\"\n",
3529 #ifdef MACOS_TRADITIONAL
3530 #define PERL_AV_SUFFIX_FMT ""
3531 #define PERL_ARCH_FMT ":%s"
3533 #define PERL_AV_SUFFIX_FMT "/"
3534 #define PERL_ARCH_FMT "/%s"
3536 /* .../version/archname if -d .../version/archname */
3537 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT PERL_ARCH_FMT,
3539 (int)PERL_REVISION, (int)PERL_VERSION,
3540 (int)PERL_SUBVERSION, ARCHNAME);
3541 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3542 S_ISDIR(tmpstatbuf.st_mode))
3543 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3545 /* .../version if -d .../version */
3546 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT, libdir,
3547 (int)PERL_REVISION, (int)PERL_VERSION,
3548 (int)PERL_SUBVERSION);
3549 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3550 S_ISDIR(tmpstatbuf.st_mode))
3551 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3553 /* .../archname if -d .../archname */
3554 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3555 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3556 S_ISDIR(tmpstatbuf.st_mode))
3557 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3560 #ifdef PERL_INC_VERSION_LIST
3562 for (incver = incverlist; *incver; incver++) {
3563 /* .../xxx if -d .../xxx */
3564 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3565 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3566 S_ISDIR(tmpstatbuf.st_mode))
3567 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3573 /* finally push this lib directory on the end of @INC */
3574 av_push(GvAVn(PL_incgv), libdir);
3579 STATIC struct perl_thread *
3580 S_init_main_thread(pTHX)
3582 #if !defined(PERL_IMPLICIT_CONTEXT)
3583 struct perl_thread *thr;
3587 Newz(53, thr, 1, struct perl_thread);
3588 PL_curcop = &PL_compiling;
3589 thr->interp = PERL_GET_INTERP;
3590 thr->cvcache = newHV();
3591 thr->threadsv = newAV();
3592 /* thr->threadsvp is set when find_threadsv is called */
3593 thr->specific = newAV();
3594 thr->flags = THRf_R_JOINABLE;
3595 MUTEX_INIT(&thr->mutex);
3596 /* Handcraft thrsv similarly to mess_sv */
3597 New(53, PL_thrsv, 1, SV);
3598 Newz(53, xpv, 1, XPV);
3599 SvFLAGS(PL_thrsv) = SVt_PV;
3600 SvANY(PL_thrsv) = (void*)xpv;
3601 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3602 SvPVX(PL_thrsv) = (char*)thr;
3603 SvCUR_set(PL_thrsv, sizeof(thr));
3604 SvLEN_set(PL_thrsv, sizeof(thr));
3605 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3606 thr->oursv = PL_thrsv;
3607 PL_chopset = " \n-";
3610 MUTEX_LOCK(&PL_threads_mutex);
3615 MUTEX_UNLOCK(&PL_threads_mutex);
3617 #ifdef HAVE_THREAD_INTERN
3618 Perl_init_thread_intern(thr);
3621 #ifdef SET_THREAD_SELF
3622 SET_THREAD_SELF(thr);
3624 thr->self = pthread_self();
3625 #endif /* SET_THREAD_SELF */
3629 * These must come after the SET_THR because sv_setpvn does
3630 * SvTAINT and the taint fields require dTHR.
3632 PL_toptarget = NEWSV(0,0);
3633 sv_upgrade(PL_toptarget, SVt_PVFM);
3634 sv_setpvn(PL_toptarget, "", 0);
3635 PL_bodytarget = NEWSV(0,0);
3636 sv_upgrade(PL_bodytarget, SVt_PVFM);
3637 sv_setpvn(PL_bodytarget, "", 0);
3638 PL_formtarget = PL_bodytarget;
3639 thr->errsv = newSVpvn("", 0);
3640 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3643 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3644 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3645 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3646 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3647 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3649 PL_reginterp_cnt = 0;
3653 #endif /* USE_THREADS */
3656 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3660 line_t oldline = CopLINE(PL_curcop);
3666 while (AvFILL(paramList) >= 0) {
3667 cv = (CV*)av_shift(paramList);
3669 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3670 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3676 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3680 (void)SvPV(atsv, len);
3683 PL_curcop = &PL_compiling;
3684 CopLINE_set(PL_curcop, oldline);
3685 if (paramList == PL_beginav)
3686 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3688 Perl_sv_catpvf(aTHX_ atsv,
3689 "%s failed--call queue aborted",
3690 paramList == PL_checkav ? "CHECK"
3691 : paramList == PL_initav ? "INIT"
3693 while (PL_scopestack_ix > oldscope)
3696 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3703 /* my_exit() was called */
3704 while (PL_scopestack_ix > oldscope)
3707 PL_curstash = PL_defstash;
3708 PL_curcop = &PL_compiling;
3709 CopLINE_set(PL_curcop, oldline);
3711 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3712 if (paramList == PL_beginav)
3713 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3715 Perl_croak(aTHX_ "%s failed--call queue aborted",
3716 paramList == PL_checkav ? "CHECK"
3717 : paramList == PL_initav ? "INIT"
3724 PL_curcop = &PL_compiling;
3725 CopLINE_set(PL_curcop, oldline);
3728 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3736 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3738 S_vcall_list_body(pTHX_ va_list args)
3740 CV *cv = va_arg(args, CV*);
3741 return call_list_body(cv);
3746 S_call_list_body(pTHX_ CV *cv)
3748 PUSHMARK(PL_stack_sp);
3749 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3754 Perl_my_exit(pTHX_ U32 status)
3758 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3759 thr, (unsigned long) status));
3768 STATUS_NATIVE_SET(status);
3775 Perl_my_failure_exit(pTHX)
3778 if (vaxc$errno & 1) {
3779 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3780 STATUS_NATIVE_SET(44);
3783 if (!vaxc$errno && errno) /* unlikely */
3784 STATUS_NATIVE_SET(44);
3786 STATUS_NATIVE_SET(vaxc$errno);
3791 STATUS_POSIX_SET(errno);
3793 exitstatus = STATUS_POSIX >> 8;
3794 if (exitstatus & 255)
3795 STATUS_POSIX_SET(exitstatus);
3797 STATUS_POSIX_SET(255);
3804 S_my_exit_jump(pTHX)
3807 register PERL_CONTEXT *cx;
3812 SvREFCNT_dec(PL_e_script);
3813 PL_e_script = Nullsv;
3816 POPSTACK_TO(PL_mainstack);
3817 if (cxstack_ix >= 0) {
3820 POPBLOCK(cx,PL_curpm);
3832 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3835 p = SvPVX(PL_e_script);
3836 nl = strchr(p, '\n');
3837 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3839 filter_del(read_e_script);
3842 sv_catpvn(buf_sv, p, nl-p);
3843 sv_chop(PL_e_script, nl);