3 * Copyright (c) 1987-2001 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>.
301 int destruct_level; /* 0=none, 1=full, 2=full with checks */
307 #endif /* USE_THREADS */
309 /* wait for all pseudo-forked children to finish */
310 PERL_WAIT_FOR_CHILDREN;
314 /* Pass 1 on any remaining threads: detach joinables, join zombies */
316 MUTEX_LOCK(&PL_threads_mutex);
317 DEBUG_S(PerlIO_printf(Perl_debug_log,
318 "perl_destruct: waiting for %d threads...\n",
320 for (t = thr->next; t != thr; t = t->next) {
321 MUTEX_LOCK(&t->mutex);
322 switch (ThrSTATE(t)) {
325 DEBUG_S(PerlIO_printf(Perl_debug_log,
326 "perl_destruct: joining zombie %p\n", t));
327 ThrSETSTATE(t, THRf_DEAD);
328 MUTEX_UNLOCK(&t->mutex);
331 * The SvREFCNT_dec below may take a long time (e.g. av
332 * may contain an object scalar whose destructor gets
333 * called) so we have to unlock threads_mutex and start
336 MUTEX_UNLOCK(&PL_threads_mutex);
338 SvREFCNT_dec((SV*)av);
339 DEBUG_S(PerlIO_printf(Perl_debug_log,
340 "perl_destruct: joined zombie %p OK\n", t));
342 case THRf_R_JOINABLE:
343 DEBUG_S(PerlIO_printf(Perl_debug_log,
344 "perl_destruct: detaching thread %p\n", t));
345 ThrSETSTATE(t, THRf_R_DETACHED);
347 * We unlock threads_mutex and t->mutex in the opposite order
348 * from which we locked them just so that DETACH won't
349 * deadlock if it panics. It's only a breach of good style
350 * not a bug since they are unlocks not locks.
352 MUTEX_UNLOCK(&PL_threads_mutex);
354 MUTEX_UNLOCK(&t->mutex);
357 DEBUG_S(PerlIO_printf(Perl_debug_log,
358 "perl_destruct: ignoring %p (state %u)\n",
360 MUTEX_UNLOCK(&t->mutex);
361 /* fall through and out */
364 /* We leave the above "Pass 1" loop with threads_mutex still locked */
366 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
367 while (PL_nthreads > 1)
369 DEBUG_S(PerlIO_printf(Perl_debug_log,
370 "perl_destruct: final wait for %d threads\n",
372 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
374 /* At this point, we're the last thread */
375 MUTEX_UNLOCK(&PL_threads_mutex);
376 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
377 MUTEX_DESTROY(&PL_threads_mutex);
378 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 /* jettison our possibly duplicated environment */
443 #ifdef USE_ENVIRON_ARRAY
444 if (environ != PL_origenviron) {
447 for (i = 0; environ[i]; i++)
448 safesysfree(environ[i]);
449 /* Must use safesysfree() when working with environ. */
450 safesysfree(environ);
452 environ = PL_origenviron;
456 /* loosen bonds of global variables */
459 (void)PerlIO_close(PL_rsfp);
463 /* Filters for program text */
464 SvREFCNT_dec(PL_rsfp_filters);
465 PL_rsfp_filters = Nullav;
468 PL_preprocess = FALSE;
474 PL_doswitches = FALSE;
475 PL_dowarn = G_WARN_OFF;
476 PL_doextract = FALSE;
477 PL_sawampersand = FALSE; /* must save all match strings */
480 Safefree(PL_inplace);
482 SvREFCNT_dec(PL_patchlevel);
485 SvREFCNT_dec(PL_e_script);
486 PL_e_script = Nullsv;
489 /* magical thingies */
491 SvREFCNT_dec(PL_ofs_sv); /* $, */
494 SvREFCNT_dec(PL_ors_sv); /* $\ */
497 SvREFCNT_dec(PL_rs); /* $/ */
500 SvREFCNT_dec(PL_nrs); /* $/ helper */
503 PL_multiline = 0; /* $* */
504 Safefree(PL_osname); /* $^O */
507 SvREFCNT_dec(PL_statname);
508 PL_statname = Nullsv;
511 /* defgv, aka *_ should be taken care of elsewhere */
513 /* clean up after study() */
514 SvREFCNT_dec(PL_lastscream);
515 PL_lastscream = Nullsv;
516 Safefree(PL_screamfirst);
518 Safefree(PL_screamnext);
522 Safefree(PL_efloatbuf);
523 PL_efloatbuf = Nullch;
526 /* startup and shutdown function lists */
527 SvREFCNT_dec(PL_beginav);
528 SvREFCNT_dec(PL_endav);
529 SvREFCNT_dec(PL_checkav);
530 SvREFCNT_dec(PL_initav);
536 /* shortcuts just get cleared */
542 PL_argvoutgv = Nullgv;
544 PL_stderrgv = Nullgv;
545 PL_last_in_gv = Nullgv;
547 PL_debstash = Nullhv;
549 /* reset so print() ends up where we expect */
552 SvREFCNT_dec(PL_argvout_stack);
553 PL_argvout_stack = Nullav;
555 SvREFCNT_dec(PL_modglobal);
556 PL_modglobal = Nullhv;
557 SvREFCNT_dec(PL_preambleav);
558 PL_preambleav = Nullav;
559 SvREFCNT_dec(PL_subname);
561 SvREFCNT_dec(PL_linestr);
563 SvREFCNT_dec(PL_pidstatus);
564 PL_pidstatus = Nullhv;
565 SvREFCNT_dec(PL_toptarget);
566 PL_toptarget = Nullsv;
567 SvREFCNT_dec(PL_bodytarget);
568 PL_bodytarget = Nullsv;
569 PL_formtarget = Nullsv;
571 /* free locale stuff */
572 #ifdef USE_LOCALE_COLLATE
573 Safefree(PL_collation_name);
574 PL_collation_name = Nullch;
577 #ifdef USE_LOCALE_NUMERIC
578 Safefree(PL_numeric_name);
579 PL_numeric_name = Nullch;
580 SvREFCNT_dec(PL_numeric_radix);
583 /* clear utf8 character classes */
584 SvREFCNT_dec(PL_utf8_alnum);
585 SvREFCNT_dec(PL_utf8_alnumc);
586 SvREFCNT_dec(PL_utf8_ascii);
587 SvREFCNT_dec(PL_utf8_alpha);
588 SvREFCNT_dec(PL_utf8_space);
589 SvREFCNT_dec(PL_utf8_cntrl);
590 SvREFCNT_dec(PL_utf8_graph);
591 SvREFCNT_dec(PL_utf8_digit);
592 SvREFCNT_dec(PL_utf8_upper);
593 SvREFCNT_dec(PL_utf8_lower);
594 SvREFCNT_dec(PL_utf8_print);
595 SvREFCNT_dec(PL_utf8_punct);
596 SvREFCNT_dec(PL_utf8_xdigit);
597 SvREFCNT_dec(PL_utf8_mark);
598 SvREFCNT_dec(PL_utf8_toupper);
599 SvREFCNT_dec(PL_utf8_tolower);
600 PL_utf8_alnum = Nullsv;
601 PL_utf8_alnumc = Nullsv;
602 PL_utf8_ascii = Nullsv;
603 PL_utf8_alpha = Nullsv;
604 PL_utf8_space = Nullsv;
605 PL_utf8_cntrl = Nullsv;
606 PL_utf8_graph = Nullsv;
607 PL_utf8_digit = Nullsv;
608 PL_utf8_upper = Nullsv;
609 PL_utf8_lower = Nullsv;
610 PL_utf8_print = Nullsv;
611 PL_utf8_punct = Nullsv;
612 PL_utf8_xdigit = Nullsv;
613 PL_utf8_mark = Nullsv;
614 PL_utf8_toupper = Nullsv;
615 PL_utf8_totitle = Nullsv;
616 PL_utf8_tolower = Nullsv;
618 if (!specialWARN(PL_compiling.cop_warnings))
619 SvREFCNT_dec(PL_compiling.cop_warnings);
620 PL_compiling.cop_warnings = Nullsv;
621 if (!specialCopIO(PL_compiling.cop_io))
622 SvREFCNT_dec(PL_compiling.cop_io);
623 PL_compiling.cop_io = Nullsv;
625 Safefree(CopFILE(&PL_compiling));
626 CopFILE(&PL_compiling) = Nullch;
627 Safefree(CopSTASHPV(&PL_compiling));
629 SvREFCNT_dec(CopFILEGV(&PL_compiling));
630 CopFILEGV(&PL_compiling) = Nullgv;
631 /* cop_stash is not refcounted */
634 /* Prepare to destruct main symbol table. */
639 SvREFCNT_dec(PL_curstname);
640 PL_curstname = Nullsv;
642 /* clear queued errors */
643 SvREFCNT_dec(PL_errors);
647 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
648 if (PL_scopestack_ix != 0)
649 Perl_warner(aTHX_ WARN_INTERNAL,
650 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
651 (long)PL_scopestack_ix);
652 if (PL_savestack_ix != 0)
653 Perl_warner(aTHX_ WARN_INTERNAL,
654 "Unbalanced saves: %ld more saves than restores\n",
655 (long)PL_savestack_ix);
656 if (PL_tmps_floor != -1)
657 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
658 (long)PL_tmps_floor + 1);
659 if (cxstack_ix != -1)
660 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
661 (long)cxstack_ix + 1);
664 /* Now absolutely destruct everything, somehow or other, loops or no. */
666 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
667 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
668 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
669 last_sv_count = PL_sv_count;
672 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
673 SvFLAGS(PL_fdpid) |= SVt_PVAV;
674 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
675 SvFLAGS(PL_strtab) |= SVt_PVHV;
677 AvREAL_off(PL_fdpid); /* no surviving entries */
678 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
681 #ifdef HAVE_INTERP_INTERN
685 /* Destruct the global string table. */
687 /* Yell and reset the HeVAL() slots that are still holding refcounts,
688 * so that sv_free() won't fail on them.
696 max = HvMAX(PL_strtab);
697 array = HvARRAY(PL_strtab);
700 if (hent && ckWARN_d(WARN_INTERNAL)) {
701 Perl_warner(aTHX_ WARN_INTERNAL,
702 "Unbalanced string table refcount: (%d) for \"%s\"",
703 HeVAL(hent) - Nullsv, HeKEY(hent));
704 HeVAL(hent) = Nullsv;
714 SvREFCNT_dec(PL_strtab);
717 /* free the pointer table used for cloning */
718 ptr_table_free(PL_ptr_table);
721 /* free special SVs */
723 SvREFCNT(&PL_sv_yes) = 0;
724 sv_clear(&PL_sv_yes);
725 SvANY(&PL_sv_yes) = NULL;
726 SvFLAGS(&PL_sv_yes) = 0;
728 SvREFCNT(&PL_sv_no) = 0;
730 SvANY(&PL_sv_no) = NULL;
731 SvFLAGS(&PL_sv_no) = 0;
733 SvREFCNT(&PL_sv_undef) = 0;
734 SvREADONLY_off(&PL_sv_undef);
736 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
737 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
739 Safefree(PL_origfilename);
740 Safefree(PL_reg_start_tmp);
742 Safefree(PL_reg_curpm);
743 Safefree(PL_reg_poscache);
744 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
745 Safefree(PL_op_mask);
746 Safefree(PL_psig_ptr);
747 Safefree(PL_psig_name);
748 Safefree(PL_bitcount);
749 Safefree(PL_psig_pend);
751 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
753 DEBUG_P(debprofdump());
755 MUTEX_DESTROY(&PL_strtab_mutex);
756 MUTEX_DESTROY(&PL_sv_mutex);
757 MUTEX_DESTROY(&PL_eval_mutex);
758 MUTEX_DESTROY(&PL_cred_mutex);
759 MUTEX_DESTROY(&PL_fdpid_mutex);
760 COND_DESTROY(&PL_eval_cond);
761 #ifdef EMULATE_ATOMIC_REFCOUNTS
762 MUTEX_DESTROY(&PL_svref_mutex);
763 #endif /* EMULATE_ATOMIC_REFCOUNTS */
765 /* As the penultimate thing, free the non-arena SV for thrsv */
766 Safefree(SvPVX(PL_thrsv));
767 Safefree(SvANY(PL_thrsv));
770 #endif /* USE_THREADS */
774 /* As the absolutely last thing, free the non-arena SV for mess() */
777 /* it could have accumulated taint magic */
778 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
781 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
782 moremagic = mg->mg_moremagic;
783 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
784 Safefree(mg->mg_ptr);
788 /* we know that type >= SVt_PV */
789 (void)SvOOK_off(PL_mess_sv);
790 Safefree(SvPVX(PL_mess_sv));
791 Safefree(SvANY(PL_mess_sv));
792 Safefree(PL_mess_sv);
798 =for apidoc perl_free
800 Releases a Perl interpreter. See L<perlembed>.
808 #if defined(PERL_OBJECT)
812 # if defined(PERL_IMPLICIT_SYS)
813 void *host = w32_internal_host;
814 if (PerlProc_lasthost()) {
818 win32_delete_internal_host(host);
830 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
832 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
833 PL_exitlist[PL_exitlistlen].fn = fn;
834 PL_exitlist[PL_exitlistlen].ptr = ptr;
839 =for apidoc perl_parse
841 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
847 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
856 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
859 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
860 setuid perl scripts securely.\n");
864 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
865 _dyld_lookup_and_bind
866 ("__environ", (unsigned long *) &environ_pointer, NULL);
871 #ifdef USE_ENVIRON_ARRAY
872 PL_origenviron = environ;
877 /* Come here if running an undumped a.out. */
879 PL_origfilename = savepv(argv[0]);
880 PL_do_undump = FALSE;
881 cxstack_ix = -1; /* start label stack again */
883 init_postdump_symbols(argc,argv,env);
888 PL_curpad = AvARRAY(PL_comppad);
889 op_free(PL_main_root);
890 PL_main_root = Nullop;
892 PL_main_start = Nullop;
893 SvREFCNT_dec(PL_main_cv);
897 oldscope = PL_scopestack_ix;
898 PL_dowarn = G_WARN_OFF;
900 #ifdef PERL_FLEXIBLE_EXCEPTIONS
901 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
907 #ifndef PERL_FLEXIBLE_EXCEPTIONS
908 parse_body(env,xsinit);
911 call_list(oldscope, PL_checkav);
918 /* my_exit() was called */
919 while (PL_scopestack_ix > oldscope)
922 PL_curstash = PL_defstash;
924 call_list(oldscope, PL_checkav);
925 ret = STATUS_NATIVE_EXPORT;
928 PerlIO_printf(Perl_error_log, "panic: top_env\n");
936 #ifdef PERL_FLEXIBLE_EXCEPTIONS
938 S_vparse_body(pTHX_ va_list args)
940 char **env = va_arg(args, char**);
941 XSINIT_t xsinit = va_arg(args, XSINIT_t);
943 return parse_body(env, xsinit);
948 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
950 int argc = PL_origargc;
951 char **argv = PL_origargv;
952 char *scriptname = NULL;
954 VOL bool dosearch = FALSE;
959 char *cddir = Nullch;
961 sv_setpvn(PL_linestr,"",0);
962 sv = newSVpvn("",0); /* first used for -I flags */
966 for (argc--,argv++; argc > 0; argc--,argv++) {
967 if (argv[0][0] != '-' || !argv[0][1])
971 validarg = " PHOOEY ";
980 win32_argv2utf8(argc-1, argv+1);
983 #ifndef PERL_STRICT_CR
1007 if ((s = moreswitches(s)))
1017 #ifdef MACOS_TRADITIONAL
1018 /* ignore -e for Dev:Pseudo argument */
1019 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1022 if (PL_euid != PL_uid || PL_egid != PL_gid)
1023 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1025 PL_e_script = newSVpvn("",0);
1026 filter_add(read_e_script, NULL);
1029 sv_catpv(PL_e_script, s);
1031 sv_catpv(PL_e_script, argv[1]);
1035 Perl_croak(aTHX_ "No code specified for -e");
1036 sv_catpv(PL_e_script, "\n");
1039 case 'I': /* -I handled both here and in moreswitches() */
1041 if (!*++s && (s=argv[1]) != Nullch) {
1046 STRLEN len = strlen(s);
1047 p = savepvn(s, len);
1048 incpush(p, TRUE, TRUE);
1049 sv_catpvn(sv, "-I", 2);
1050 sv_catpvn(sv, p, len);
1051 sv_catpvn(sv, " ", 1);
1055 Perl_croak(aTHX_ "No directory specified for -I");
1059 PL_preprocess = TRUE;
1069 PL_preambleav = newAV();
1070 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1072 PL_Sv = newSVpv("print myconfig();",0);
1074 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1076 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1078 sv_catpv(PL_Sv,"\" Compile-time options:");
1080 sv_catpv(PL_Sv," DEBUGGING");
1082 # ifdef MULTIPLICITY
1083 sv_catpv(PL_Sv," MULTIPLICITY");
1086 sv_catpv(PL_Sv," USE_THREADS");
1088 # ifdef USE_ITHREADS
1089 sv_catpv(PL_Sv," USE_ITHREADS");
1091 # ifdef USE_64_BIT_INT
1092 sv_catpv(PL_Sv," USE_64_BIT_INT");
1094 # ifdef USE_64_BIT_ALL
1095 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1097 # ifdef USE_LONG_DOUBLE
1098 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1100 # ifdef USE_LARGE_FILES
1101 sv_catpv(PL_Sv," USE_LARGE_FILES");
1104 sv_catpv(PL_Sv," USE_SOCKS");
1107 sv_catpv(PL_Sv," PERL_OBJECT");
1109 # ifdef PERL_IMPLICIT_CONTEXT
1110 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1112 # ifdef PERL_IMPLICIT_SYS
1113 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1115 sv_catpv(PL_Sv,"\\n\",");
1117 #if defined(LOCAL_PATCH_COUNT)
1118 if (LOCAL_PATCH_COUNT > 0) {
1120 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1121 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1122 if (PL_localpatches[i])
1123 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1127 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1130 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1132 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1135 sv_catpv(PL_Sv, "; \
1137 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1138 print \" \\%ENV:\\n @env\\n\" if @env; \
1139 print \" \\@INC:\\n @INC\\n\";");
1142 PL_Sv = newSVpv("config_vars(qw(",0);
1143 sv_catpv(PL_Sv, ++s);
1144 sv_catpv(PL_Sv, "))");
1147 av_push(PL_preambleav, PL_Sv);
1148 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1151 PL_doextract = TRUE;
1159 if (!*++s || isSPACE(*s)) {
1163 /* catch use of gnu style long options */
1164 if (strEQ(s, "version")) {
1168 if (strEQ(s, "help")) {
1175 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1181 #ifndef SECURE_INTERNAL_GETENV
1184 (s = PerlEnv_getenv("PERL5OPT")))
1188 if (*s == '-' && *(s+1) == 'T')
1203 if (!strchr("DIMUdmw", *s))
1204 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1217 scriptname = argv[0];
1220 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1222 else if (scriptname == Nullch) {
1224 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1232 open_script(scriptname,dosearch,sv,&fdscript);
1234 validate_suid(validarg, scriptname,fdscript);
1237 #if defined(SIGCHLD) || defined(SIGCLD)
1240 # define SIGCHLD SIGCLD
1242 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1243 if (sigstate == SIG_IGN) {
1244 if (ckWARN(WARN_SIGNAL))
1245 Perl_warner(aTHX_ WARN_SIGNAL,
1246 "Can't ignore signal CHLD, forcing to default");
1247 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1253 #ifdef MACOS_TRADITIONAL
1254 if (PL_doextract || gMacPerl_AlwaysExtract) {
1259 if (cddir && PerlDir_chdir(cddir) < 0)
1260 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1264 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1265 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1266 CvUNIQUE_on(PL_compcv);
1268 PL_comppad = newAV();
1269 av_push(PL_comppad, Nullsv);
1270 PL_curpad = AvARRAY(PL_comppad);
1271 PL_comppad_name = newAV();
1272 PL_comppad_name_fill = 0;
1273 PL_min_intro_pending = 0;
1276 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1277 PL_curpad[0] = (SV*)newAV();
1278 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1279 CvOWNER(PL_compcv) = 0;
1280 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1281 MUTEX_INIT(CvMUTEXP(PL_compcv));
1282 #endif /* USE_THREADS */
1284 comppadlist = newAV();
1285 AvREAL_off(comppadlist);
1286 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1287 av_store(comppadlist, 1, (SV*)PL_comppad);
1288 CvPADLIST(PL_compcv) = comppadlist;
1290 boot_core_UNIVERSAL();
1292 boot_core_xsutils();
1296 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1298 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1304 # ifdef HAS_SOCKS5_INIT
1305 socks5_init(argv[0]);
1311 init_predump_symbols();
1312 /* init_postdump_symbols not currently designed to be called */
1313 /* more than once (ENV isn't cleared first, for example) */
1314 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1316 init_postdump_symbols(argc,argv,env);
1320 /* now parse the script */
1322 SETERRNO(0,SS$_NORMAL);
1324 #ifdef MACOS_TRADITIONAL
1325 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1327 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1329 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1330 MacPerl_MPWFileName(PL_origfilename));
1334 if (yyparse() || PL_error_count) {
1336 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1338 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1343 CopLINE_set(PL_curcop, 0);
1344 PL_curstash = PL_defstash;
1345 PL_preprocess = FALSE;
1347 SvREFCNT_dec(PL_e_script);
1348 PL_e_script = Nullsv;
1351 /* now that script is parsed, we can modify record separator */
1352 SvREFCNT_dec(PL_rs);
1353 PL_rs = SvREFCNT_inc(PL_nrs);
1354 sv_setsv(get_sv("/", TRUE), PL_rs);
1359 SAVECOPFILE(PL_curcop);
1360 SAVECOPLINE(PL_curcop);
1361 gv_check(PL_defstash);
1368 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1369 dump_mstats("after compilation:");
1378 =for apidoc perl_run
1380 Tells a Perl interpreter to run. See L<perlembed>.
1395 oldscope = PL_scopestack_ix;
1397 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1399 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1405 cxstack_ix = -1; /* start context stack again */
1407 case 0: /* normal completion */
1408 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1413 case 2: /* my_exit() */
1414 while (PL_scopestack_ix > oldscope)
1417 PL_curstash = PL_defstash;
1418 if (PL_endav && !PL_minus_c)
1419 call_list(oldscope, PL_endav);
1421 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1422 dump_mstats("after execution: ");
1424 ret = STATUS_NATIVE_EXPORT;
1428 POPSTACK_TO(PL_mainstack);
1431 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1441 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1443 S_vrun_body(pTHX_ va_list args)
1445 I32 oldscope = va_arg(args, I32);
1447 return run_body(oldscope);
1453 S_run_body(pTHX_ I32 oldscope)
1455 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1456 PL_sawampersand ? "Enabling" : "Omitting"));
1458 if (!PL_restartop) {
1459 DEBUG_x(dump_all());
1460 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1461 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1465 #ifdef MACOS_TRADITIONAL
1466 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1468 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1472 if (PERLDB_SINGLE && PL_DBsingle)
1473 sv_setiv(PL_DBsingle, 1);
1475 call_list(oldscope, PL_initav);
1481 PL_op = PL_restartop;
1485 else if (PL_main_start) {
1486 CvDEPTH(PL_main_cv) = 1;
1487 PL_op = PL_main_start;
1497 =for apidoc p||get_sv
1499 Returns the SV of the specified Perl scalar. If C<create> is set and the
1500 Perl variable does not exist then it will be created. If C<create> is not
1501 set and the variable does not exist then NULL is returned.
1507 Perl_get_sv(pTHX_ const char *name, I32 create)
1511 if (name[1] == '\0' && !isALPHA(name[0])) {
1512 PADOFFSET tmp = find_threadsv(name);
1513 if (tmp != NOT_IN_PAD)
1514 return THREADSV(tmp);
1516 #endif /* USE_THREADS */
1517 gv = gv_fetchpv(name, create, SVt_PV);
1524 =for apidoc p||get_av
1526 Returns the AV of the specified Perl array. If C<create> is set and the
1527 Perl variable does not exist then it will be created. If C<create> is not
1528 set and the variable does not exist then NULL is returned.
1534 Perl_get_av(pTHX_ const char *name, I32 create)
1536 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1545 =for apidoc p||get_hv
1547 Returns the HV of the specified Perl hash. If C<create> is set and the
1548 Perl variable does not exist then it will be created. If C<create> is not
1549 set and the variable does not exist then NULL is returned.
1555 Perl_get_hv(pTHX_ const char *name, I32 create)
1557 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1566 =for apidoc p||get_cv
1568 Returns the CV of the specified Perl subroutine. If C<create> is set and
1569 the Perl subroutine does not exist then it will be declared (which has the
1570 same effect as saying C<sub name;>). If C<create> is not set and the
1571 subroutine does not exist then NULL is returned.
1577 Perl_get_cv(pTHX_ const char *name, I32 create)
1579 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1580 /* XXX unsafe for threads if eval_owner isn't held */
1581 /* XXX this is probably not what they think they're getting.
1582 * It has the same effect as "sub name;", i.e. just a forward
1584 if (create && !GvCVu(gv))
1585 return newSUB(start_subparse(FALSE, 0),
1586 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1594 /* Be sure to refetch the stack pointer after calling these routines. */
1597 =for apidoc p||call_argv
1599 Performs a callback to the specified Perl sub. See L<perlcall>.
1605 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1607 /* See G_* flags in cop.h */
1608 /* null terminated arg list */
1615 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1620 return call_pv(sub_name, flags);
1624 =for apidoc p||call_pv
1626 Performs a callback to the specified Perl sub. See L<perlcall>.
1632 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1633 /* name of the subroutine */
1634 /* See G_* flags in cop.h */
1636 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1640 =for apidoc p||call_method
1642 Performs a callback to the specified Perl method. The blessed object must
1643 be on the stack. See L<perlcall>.
1649 Perl_call_method(pTHX_ const char *methname, I32 flags)
1650 /* name of the subroutine */
1651 /* See G_* flags in cop.h */
1653 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1656 /* May be called with any of a CV, a GV, or an SV containing the name. */
1658 =for apidoc p||call_sv
1660 Performs a callback to the Perl sub whose name is in the SV. See
1667 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1668 /* See G_* flags in cop.h */
1671 LOGOP myop; /* fake syntax tree node */
1676 bool oldcatch = CATCH_GET;
1681 if (flags & G_DISCARD) {
1686 Zero(&myop, 1, LOGOP);
1687 myop.op_next = Nullop;
1688 if (!(flags & G_NOARGS))
1689 myop.op_flags |= OPf_STACKED;
1690 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1691 (flags & G_ARRAY) ? OPf_WANT_LIST :
1696 EXTEND(PL_stack_sp, 1);
1697 *++PL_stack_sp = sv;
1699 oldscope = PL_scopestack_ix;
1701 if (PERLDB_SUB && PL_curstash != PL_debstash
1702 /* Handle first BEGIN of -d. */
1703 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1704 /* Try harder, since this may have been a sighandler, thus
1705 * curstash may be meaningless. */
1706 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1707 && !(flags & G_NODEBUG))
1708 PL_op->op_private |= OPpENTERSUB_DB;
1710 if (flags & G_METHOD) {
1711 Zero(&method_op, 1, UNOP);
1712 method_op.op_next = PL_op;
1713 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1714 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1715 PL_op = (OP*)&method_op;
1718 if (!(flags & G_EVAL)) {
1720 call_body((OP*)&myop, FALSE);
1721 retval = PL_stack_sp - (PL_stack_base + oldmark);
1722 CATCH_SET(oldcatch);
1725 myop.op_other = (OP*)&myop;
1727 /* we're trying to emulate pp_entertry() here */
1729 register PERL_CONTEXT *cx;
1730 I32 gimme = GIMME_V;
1735 push_return(Nullop);
1736 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1738 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1740 PL_in_eval = EVAL_INEVAL;
1741 if (flags & G_KEEPERR)
1742 PL_in_eval |= EVAL_KEEPERR;
1748 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1750 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1757 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1759 call_body((OP*)&myop, FALSE);
1761 retval = PL_stack_sp - (PL_stack_base + oldmark);
1762 if (!(flags & G_KEEPERR))
1769 /* my_exit() was called */
1770 PL_curstash = PL_defstash;
1773 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1774 Perl_croak(aTHX_ "Callback called exit");
1779 PL_op = PL_restartop;
1783 PL_stack_sp = PL_stack_base + oldmark;
1784 if (flags & G_ARRAY)
1788 *++PL_stack_sp = &PL_sv_undef;
1793 if (PL_scopestack_ix > oldscope) {
1797 register PERL_CONTEXT *cx;
1809 if (flags & G_DISCARD) {
1810 PL_stack_sp = PL_stack_base + oldmark;
1819 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1821 S_vcall_body(pTHX_ va_list args)
1823 OP *myop = va_arg(args, OP*);
1824 int is_eval = va_arg(args, int);
1826 call_body(myop, is_eval);
1832 S_call_body(pTHX_ OP *myop, int is_eval)
1834 if (PL_op == myop) {
1836 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1838 PL_op = Perl_pp_entersub(aTHX); /* this does */
1844 /* Eval a string. The G_EVAL flag is always assumed. */
1847 =for apidoc p||eval_sv
1849 Tells Perl to C<eval> the string in the SV.
1855 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1857 /* See G_* flags in cop.h */
1860 UNOP myop; /* fake syntax tree node */
1861 I32 oldmark = SP - PL_stack_base;
1868 if (flags & G_DISCARD) {
1875 Zero(PL_op, 1, UNOP);
1876 EXTEND(PL_stack_sp, 1);
1877 *++PL_stack_sp = sv;
1878 oldscope = PL_scopestack_ix;
1880 if (!(flags & G_NOARGS))
1881 myop.op_flags = OPf_STACKED;
1882 myop.op_next = Nullop;
1883 myop.op_type = OP_ENTEREVAL;
1884 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1885 (flags & G_ARRAY) ? OPf_WANT_LIST :
1887 if (flags & G_KEEPERR)
1888 myop.op_flags |= OPf_SPECIAL;
1890 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1892 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1899 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1901 call_body((OP*)&myop,TRUE);
1903 retval = PL_stack_sp - (PL_stack_base + oldmark);
1904 if (!(flags & G_KEEPERR))
1911 /* my_exit() was called */
1912 PL_curstash = PL_defstash;
1915 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1916 Perl_croak(aTHX_ "Callback called exit");
1921 PL_op = PL_restartop;
1925 PL_stack_sp = PL_stack_base + oldmark;
1926 if (flags & G_ARRAY)
1930 *++PL_stack_sp = &PL_sv_undef;
1936 if (flags & G_DISCARD) {
1937 PL_stack_sp = PL_stack_base + oldmark;
1947 =for apidoc p||eval_pv
1949 Tells Perl to C<eval> the given string and return an SV* result.
1955 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1958 SV* sv = newSVpv(p, 0);
1960 eval_sv(sv, G_SCALAR);
1967 if (croak_on_error && SvTRUE(ERRSV)) {
1969 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1975 /* Require a module. */
1978 =for apidoc p||require_pv
1980 Tells Perl to C<require> a module.
1986 Perl_require_pv(pTHX_ const char *pv)
1990 PUSHSTACKi(PERLSI_REQUIRE);
1992 sv = sv_newmortal();
1993 sv_setpv(sv, "require '");
1996 eval_sv(sv, G_DISCARD);
2002 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2006 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2007 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
2011 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2013 /* This message really ought to be max 23 lines.
2014 * Removed -h because the user already knows that opton. Others? */
2016 static char *usage_msg[] = {
2017 "-0[octal] specify record separator (\\0, if no argument)",
2018 "-a autosplit mode with -n or -p (splits $_ into @F)",
2019 "-C enable native wide character system interfaces",
2020 "-c check syntax only (runs BEGIN and CHECK blocks)",
2021 "-d[:debugger] run program under debugger",
2022 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2023 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2024 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2025 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2026 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2027 "-l[octal] enable line ending processing, specifies line terminator",
2028 "-[mM][-]module execute `use/no module...' before executing program",
2029 "-n assume 'while (<>) { ... }' loop around program",
2030 "-p assume loop like -n but print line also, like sed",
2031 "-P run program through C preprocessor before compilation",
2032 "-s enable rudimentary parsing for switches after programfile",
2033 "-S look for programfile using PATH environment variable",
2034 "-T enable tainting checks",
2035 "-u dump core after parsing program",
2036 "-U allow unsafe operations",
2037 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2038 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2039 "-w enable many useful warnings (RECOMMENDED)",
2040 "-W enable all warnings",
2041 "-X disable all warnings",
2042 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2046 char **p = usage_msg;
2048 PerlIO_printf(PerlIO_stdout(),
2049 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2052 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2055 /* This routine handles any switches that can be given during run */
2058 Perl_moreswitches(pTHX_ char *s)
2066 numlen = 0; /* disallow underscores */
2067 rschar = (U32)scan_oct(s, 4, &numlen);
2068 SvREFCNT_dec(PL_nrs);
2069 if (rschar & ~((U8)~0))
2070 PL_nrs = &PL_sv_undef;
2071 else if (!rschar && numlen >= 2)
2072 PL_nrs = newSVpvn("", 0);
2075 PL_nrs = newSVpvn(&ch, 1);
2080 PL_widesyscalls = TRUE;
2085 PL_splitstr = savepv(s + 1);
2099 /* The following permits -d:Mod to accepts arguments following an =
2100 in the fashion that -MSome::Mod does. */
2101 if (*s == ':' || *s == '=') {
2104 sv = newSVpv("use Devel::", 0);
2106 /* We now allow -d:Module=Foo,Bar */
2107 while(isALNUM(*s) || *s==':') ++s;
2109 sv_catpv(sv, start);
2111 sv_catpvn(sv, start, s-start);
2112 sv_catpv(sv, " split(/,/,q{");
2117 my_setenv("PERL5DB", SvPV(sv, PL_na));
2120 PL_perldb = PERLDB_ALL;
2128 if (isALPHA(s[1])) {
2129 static char debopts[] = "psltocPmfrxuLHXDST";
2132 for (s++; *s && (d = strchr(debopts,*s)); s++)
2133 PL_debug |= 1 << (d - debopts);
2136 PL_debug = atoi(s+1);
2137 for (s++; isDIGIT(*s); s++) ;
2139 PL_debug |= 0x80000000;
2141 if (ckWARN_d(WARN_DEBUGGING))
2142 Perl_warner(aTHX_ WARN_DEBUGGING,
2143 "Recompile perl with -DDEBUGGING to use -D switch\n");
2144 for (s++; isALNUM(*s); s++) ;
2150 usage(PL_origargv[0]);
2154 Safefree(PL_inplace);
2155 PL_inplace = savepv(s+1);
2157 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2160 if (*s == '-') /* Additional switches on #! line. */
2164 case 'I': /* -I handled both here and in parse_perl() */
2167 while (*s && isSPACE(*s))
2172 /* ignore trailing spaces (possibly followed by other switches) */
2174 for (e = p; *e && !isSPACE(*e); e++) ;
2178 } while (*p && *p != '-');
2179 e = savepvn(s, e-s);
2180 incpush(e, TRUE, TRUE);
2187 Perl_croak(aTHX_ "No directory specified for -I");
2193 SvREFCNT_dec(PL_ors_sv);
2197 PL_ors_sv = newSVpvn("\n",1);
2198 numlen = 0; /* disallow underscores */
2199 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2203 if (RsPARA(PL_nrs)) {
2204 PL_ors_sv = newSVpvn("\n\n",2);
2207 PL_ors_sv = newSVsv(PL_nrs);
2212 forbid_setid("-M"); /* XXX ? */
2215 forbid_setid("-m"); /* XXX ? */
2220 /* -M-foo == 'no foo' */
2221 if (*s == '-') { use = "no "; ++s; }
2222 sv = newSVpv(use,0);
2224 /* We allow -M'Module qw(Foo Bar)' */
2225 while(isALNUM(*s) || *s==':') ++s;
2227 sv_catpv(sv, start);
2228 if (*(start-1) == 'm') {
2230 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2231 sv_catpv( sv, " ()");
2235 Perl_croak(aTHX_ "Module name required with -%c option",
2237 sv_catpvn(sv, start, s-start);
2238 sv_catpv(sv, " split(/,/,q{");
2244 PL_preambleav = newAV();
2245 av_push(PL_preambleav, sv);
2248 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2260 PL_doswitches = TRUE;
2265 Perl_croak(aTHX_ "Too late for \"-T\" option");
2269 #ifdef MACOS_TRADITIONAL
2270 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2272 PL_do_undump = TRUE;
2280 PerlIO_printf(PerlIO_stdout(),
2281 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2282 PL_patchlevel, ARCHNAME));
2283 #if defined(LOCAL_PATCH_COUNT)
2284 if (LOCAL_PATCH_COUNT > 0)
2285 PerlIO_printf(PerlIO_stdout(),
2286 "\n(with %d registered patch%s, "
2287 "see perl -V for more detail)",
2288 (int)LOCAL_PATCH_COUNT,
2289 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2292 PerlIO_printf(PerlIO_stdout(),
2293 "\n\nCopyright 1987-2001, Larry Wall\n");
2294 #ifdef MACOS_TRADITIONAL
2295 PerlIO_printf(PerlIO_stdout(),
2296 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
2299 PerlIO_printf(PerlIO_stdout(),
2300 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2303 PerlIO_printf(PerlIO_stdout(),
2304 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2305 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2308 PerlIO_printf(PerlIO_stdout(),
2309 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2310 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2313 PerlIO_printf(PerlIO_stdout(),
2314 "atariST series port, ++jrb bammi@cadence.com\n");
2317 PerlIO_printf(PerlIO_stdout(),
2318 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2321 PerlIO_printf(PerlIO_stdout(),
2322 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
2325 PerlIO_printf(PerlIO_stdout(),
2326 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2329 PerlIO_printf(PerlIO_stdout(),
2330 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2333 PerlIO_printf(PerlIO_stdout(),
2334 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2337 PerlIO_printf(PerlIO_stdout(),
2338 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2341 PerlIO_printf(PerlIO_stdout(),
2342 "MiNT port by Guido Flohr, 1997-1999\n");
2345 PerlIO_printf(PerlIO_stdout(),
2346 "EPOC port by Olaf Flebbe, 1999-2000\n");
2348 #ifdef BINARY_BUILD_NOTICE
2349 BINARY_BUILD_NOTICE;
2351 PerlIO_printf(PerlIO_stdout(),
2353 Perl may be copied only under the terms of either the Artistic License or the\n\
2354 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2355 Complete documentation for Perl, including FAQ lists, should be found on\n\
2356 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2357 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2360 if (! (PL_dowarn & G_WARN_ALL_MASK))
2361 PL_dowarn |= G_WARN_ON;
2365 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2366 PL_compiling.cop_warnings = pWARN_ALL ;
2370 PL_dowarn = G_WARN_ALL_OFF;
2371 PL_compiling.cop_warnings = pWARN_NONE ;
2376 if (s[1] == '-') /* Additional switches on #! line. */
2381 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2387 #ifdef ALTERNATE_SHEBANG
2388 case 'S': /* OS/2 needs -S on "extproc" line. */
2396 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2401 /* compliments of Tom Christiansen */
2403 /* unexec() can be found in the Gnu emacs distribution */
2404 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2407 Perl_my_unexec(pTHX)
2415 prog = newSVpv(BIN_EXP, 0);
2416 sv_catpv(prog, "/perl");
2417 file = newSVpv(PL_origfilename, 0);
2418 sv_catpv(file, ".perldump");
2420 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2421 /* unexec prints msg to stderr in case of failure */
2422 PerlProc_exit(status);
2425 # include <lib$routines.h>
2426 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2428 ABORT(); /* for use with undump */
2433 /* initialize curinterp */
2438 #ifdef PERL_OBJECT /* XXX kludge */
2441 PL_chopset = " \n-"; \
2442 PL_copline = NOLINE; \
2443 PL_curcop = &PL_compiling;\
2444 PL_curcopdb = NULL; \
2446 PL_dumpindent = 4; \
2447 PL_laststatval = -1; \
2448 PL_laststype = OP_STAT; \
2449 PL_maxscream = -1; \
2450 PL_maxsysfd = MAXSYSFD; \
2451 PL_statname = Nullsv; \
2452 PL_tmps_floor = -1; \
2454 PL_op_mask = NULL; \
2455 PL_laststatval = -1; \
2456 PL_laststype = OP_STAT; \
2457 PL_mess_sv = Nullsv; \
2458 PL_splitstr = " "; \
2459 PL_generation = 100; \
2460 PL_exitlist = NULL; \
2461 PL_exitlistlen = 0; \
2463 PL_in_clean_objs = FALSE; \
2464 PL_in_clean_all = FALSE; \
2465 PL_profiledata = NULL; \
2467 PL_rsfp_filters = Nullav; \
2472 # ifdef MULTIPLICITY
2473 # define PERLVAR(var,type)
2474 # define PERLVARA(var,n,type)
2475 # if defined(PERL_IMPLICIT_CONTEXT)
2476 # if defined(USE_THREADS)
2477 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2478 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2479 # else /* !USE_THREADS */
2480 # define PERLVARI(var,type,init) aTHX->var = init;
2481 # define PERLVARIC(var,type,init) aTHX->var = init;
2482 # endif /* USE_THREADS */
2484 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2485 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2487 # include "intrpvar.h"
2488 # ifndef USE_THREADS
2489 # include "thrdvar.h"
2496 # define PERLVAR(var,type)
2497 # define PERLVARA(var,n,type)
2498 # define PERLVARI(var,type,init) PL_##var = init;
2499 # define PERLVARIC(var,type,init) PL_##var = init;
2500 # include "intrpvar.h"
2501 # ifndef USE_THREADS
2502 # include "thrdvar.h"
2514 S_init_main_stash(pTHX)
2518 /* Note that strtab is a rather special HV. Assumptions are made
2519 about not iterating on it, and not adding tie magic to it.
2520 It is properly deallocated in perl_destruct() */
2521 PL_strtab = newHV();
2523 MUTEX_INIT(&PL_strtab_mutex);
2525 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2526 hv_ksplit(PL_strtab, 512);
2528 PL_curstash = PL_defstash = newHV();
2529 PL_curstname = newSVpvn("main",4);
2530 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2531 SvREFCNT_dec(GvHV(gv));
2532 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2534 HvNAME(PL_defstash) = savepv("main");
2535 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2536 GvMULTI_on(PL_incgv);
2537 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2538 GvMULTI_on(PL_hintgv);
2539 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2540 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2541 GvMULTI_on(PL_errgv);
2542 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2543 GvMULTI_on(PL_replgv);
2544 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2545 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2546 sv_setpvn(ERRSV, "", 0);
2547 PL_curstash = PL_defstash;
2548 CopSTASH_set(&PL_compiling, PL_defstash);
2549 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2550 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2551 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2552 /* We must init $/ before switches are processed. */
2553 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2557 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2562 PL_origfilename = savepv("-e");
2565 /* if find_script() returns, it returns a malloc()-ed value */
2566 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2568 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2569 char *s = scriptname + 8;
2570 *fdscript = atoi(s);
2574 scriptname = savepv(s + 1);
2575 Safefree(PL_origfilename);
2576 PL_origfilename = scriptname;
2582 Safefree(CopFILE(PL_curcop));
2584 SvREFCNT_dec(CopFILEGV(PL_curcop));
2586 CopFILE_set(PL_curcop, PL_origfilename);
2587 if (strEQ(PL_origfilename,"-"))
2589 if (*fdscript >= 0) {
2590 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2591 #if defined(HAS_FCNTL) && defined(F_SETFD)
2593 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2596 else if (PL_preprocess) {
2597 char *cpp_cfg = CPPSTDIN;
2598 SV *cpp = newSVpvn("",0);
2599 SV *cmd = NEWSV(0,0);
2601 if (strEQ(cpp_cfg, "cppstdin"))
2602 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2603 sv_catpv(cpp, cpp_cfg);
2605 sv_catpvn(sv, "-I", 2);
2606 sv_catpv(sv,PRIVLIB_EXP);
2608 #if defined(MSDOS) || defined(WIN32)
2609 Perl_sv_setpvf(aTHX_ cmd, "\
2610 sed %s -e \"/^[^#]/b\" \
2611 -e \"/^#[ ]*include[ ]/b\" \
2612 -e \"/^#[ ]*define[ ]/b\" \
2613 -e \"/^#[ ]*if[ ]/b\" \
2614 -e \"/^#[ ]*ifdef[ ]/b\" \
2615 -e \"/^#[ ]*ifndef[ ]/b\" \
2616 -e \"/^#[ ]*else/b\" \
2617 -e \"/^#[ ]*elif[ ]/b\" \
2618 -e \"/^#[ ]*undef[ ]/b\" \
2619 -e \"/^#[ ]*endif/b\" \
2621 %s | %"SVf" -C %"SVf" %s",
2622 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2625 Perl_sv_setpvf(aTHX_ cmd, "\
2626 %s %s -e '/^[^#]/b' \
2627 -e '/^#[ ]*include[ ]/b' \
2628 -e '/^#[ ]*define[ ]/b' \
2629 -e '/^#[ ]*if[ ]/b' \
2630 -e '/^#[ ]*ifdef[ ]/b' \
2631 -e '/^#[ ]*ifndef[ ]/b' \
2632 -e '/^#[ ]*else/b' \
2633 -e '/^#[ ]*elif[ ]/b' \
2634 -e '/^#[ ]*undef[ ]/b' \
2635 -e '/^#[ ]*endif/b' \
2637 %s | %"SVf" %"SVf" %s",
2639 Perl_sv_setpvf(aTHX_ cmd, "\
2640 %s %s -e '/^[^#]/b' \
2641 -e '/^#[ ]*include[ ]/b' \
2642 -e '/^#[ ]*define[ ]/b' \
2643 -e '/^#[ ]*if[ ]/b' \
2644 -e '/^#[ ]*ifdef[ ]/b' \
2645 -e '/^#[ ]*ifndef[ ]/b' \
2646 -e '/^#[ ]*else/b' \
2647 -e '/^#[ ]*elif[ ]/b' \
2648 -e '/^#[ ]*undef[ ]/b' \
2649 -e '/^#[ ]*endif/b' \
2651 %s | %"SVf" -C %"SVf" %s",
2658 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2660 scriptname, cpp, sv, CPPMINUS);
2661 PL_doextract = FALSE;
2662 #ifdef IAMSUID /* actually, this is caught earlier */
2663 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2665 (void)seteuid(PL_uid); /* musn't stay setuid root */
2668 (void)setreuid((Uid_t)-1, PL_uid);
2670 #ifdef HAS_SETRESUID
2671 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2673 PerlProc_setuid(PL_uid);
2677 if (PerlProc_geteuid() != PL_uid)
2678 Perl_croak(aTHX_ "Can't do seteuid!\n");
2680 #endif /* IAMSUID */
2681 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2685 else if (!*scriptname) {
2686 forbid_setid("program input from stdin");
2687 PL_rsfp = PerlIO_stdin();
2690 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2691 #if defined(HAS_FCNTL) && defined(F_SETFD)
2693 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2698 #ifndef IAMSUID /* in case script is not readable before setuid */
2700 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2701 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2704 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2705 (int)PERL_REVISION, (int)PERL_VERSION,
2706 (int)PERL_SUBVERSION), PL_origargv);
2707 Perl_croak(aTHX_ "Can't do setuid\n");
2711 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2712 CopFILE(PL_curcop), Strerror(errno));
2717 * I_SYSSTATVFS HAS_FSTATVFS
2719 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2720 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2721 * here so that metaconfig picks them up. */
2725 S_fd_on_nosuid_fs(pTHX_ int fd)
2727 int check_okay = 0; /* able to do all the required sys/libcalls */
2728 int on_nosuid = 0; /* the fd is on a nosuid fs */
2730 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2731 * fstatvfs() is UNIX98.
2732 * fstatfs() is 4.3 BSD.
2733 * ustat()+getmnt() is pre-4.3 BSD.
2734 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2735 * an irrelevant filesystem while trying to reach the right one.
2738 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2740 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2741 defined(HAS_FSTATVFS)
2742 # define FD_ON_NOSUID_CHECK_OKAY
2743 struct statvfs stfs;
2745 check_okay = fstatvfs(fd, &stfs) == 0;
2746 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2747 # endif /* fstatvfs */
2749 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2750 defined(PERL_MOUNT_NOSUID) && \
2751 defined(HAS_FSTATFS) && \
2752 defined(HAS_STRUCT_STATFS) && \
2753 defined(HAS_STRUCT_STATFS_F_FLAGS)
2754 # define FD_ON_NOSUID_CHECK_OKAY
2757 check_okay = fstatfs(fd, &stfs) == 0;
2758 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2759 # endif /* fstatfs */
2761 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2762 defined(PERL_MOUNT_NOSUID) && \
2763 defined(HAS_FSTAT) && \
2764 defined(HAS_USTAT) && \
2765 defined(HAS_GETMNT) && \
2766 defined(HAS_STRUCT_FS_DATA) && \
2768 # define FD_ON_NOSUID_CHECK_OKAY
2771 if (fstat(fd, &fdst) == 0) {
2773 if (ustat(fdst.st_dev, &us) == 0) {
2775 /* NOSTAT_ONE here because we're not examining fields which
2776 * vary between that case and STAT_ONE. */
2777 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2778 size_t cmplen = sizeof(us.f_fname);
2779 if (sizeof(fsd.fd_req.path) < cmplen)
2780 cmplen = sizeof(fsd.fd_req.path);
2781 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2782 fdst.st_dev == fsd.fd_req.dev) {
2784 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2790 # endif /* fstat+ustat+getmnt */
2792 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2793 defined(HAS_GETMNTENT) && \
2794 defined(HAS_HASMNTOPT) && \
2795 defined(MNTOPT_NOSUID)
2796 # define FD_ON_NOSUID_CHECK_OKAY
2797 FILE *mtab = fopen("/etc/mtab", "r");
2798 struct mntent *entry;
2799 struct stat stb, fsb;
2801 if (mtab && (fstat(fd, &stb) == 0)) {
2802 while (entry = getmntent(mtab)) {
2803 if (stat(entry->mnt_dir, &fsb) == 0
2804 && fsb.st_dev == stb.st_dev)
2806 /* found the filesystem */
2808 if (hasmntopt(entry, MNTOPT_NOSUID))
2811 } /* A single fs may well fail its stat(). */
2816 # endif /* getmntent+hasmntopt */
2819 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2822 #endif /* IAMSUID */
2825 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2831 /* do we need to emulate setuid on scripts? */
2833 /* This code is for those BSD systems that have setuid #! scripts disabled
2834 * in the kernel because of a security problem. Merely defining DOSUID
2835 * in perl will not fix that problem, but if you have disabled setuid
2836 * scripts in the kernel, this will attempt to emulate setuid and setgid
2837 * on scripts that have those now-otherwise-useless bits set. The setuid
2838 * root version must be called suidperl or sperlN.NNN. If regular perl
2839 * discovers that it has opened a setuid script, it calls suidperl with
2840 * the same argv that it had. If suidperl finds that the script it has
2841 * just opened is NOT setuid root, it sets the effective uid back to the
2842 * uid. We don't just make perl setuid root because that loses the
2843 * effective uid we had before invoking perl, if it was different from the
2846 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2847 * be defined in suidperl only. suidperl must be setuid root. The
2848 * Configure script will set this up for you if you want it.
2854 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2855 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2856 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2861 #ifndef HAS_SETREUID
2862 /* On this access check to make sure the directories are readable,
2863 * there is actually a small window that the user could use to make
2864 * filename point to an accessible directory. So there is a faint
2865 * chance that someone could execute a setuid script down in a
2866 * non-accessible directory. I don't know what to do about that.
2867 * But I don't think it's too important. The manual lies when
2868 * it says access() is useful in setuid programs.
2870 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2871 Perl_croak(aTHX_ "Permission denied");
2873 /* If we can swap euid and uid, then we can determine access rights
2874 * with a simple stat of the file, and then compare device and
2875 * inode to make sure we did stat() on the same file we opened.
2876 * Then we just have to make sure he or she can execute it.
2879 struct stat tmpstatbuf;
2883 setreuid(PL_euid,PL_uid) < 0
2886 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2889 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2890 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2891 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2892 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2893 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2894 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2895 Perl_croak(aTHX_ "Permission denied");
2897 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2898 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2899 (void)PerlIO_close(PL_rsfp);
2900 Perl_croak(aTHX_ "Permission denied\n");
2904 setreuid(PL_uid,PL_euid) < 0
2906 # if defined(HAS_SETRESUID)
2907 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2910 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2911 Perl_croak(aTHX_ "Can't reswap uid and euid");
2912 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2913 Perl_croak(aTHX_ "Permission denied\n");
2915 #endif /* HAS_SETREUID */
2916 #endif /* IAMSUID */
2918 if (!S_ISREG(PL_statbuf.st_mode))
2919 Perl_croak(aTHX_ "Permission denied");
2920 if (PL_statbuf.st_mode & S_IWOTH)
2921 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2922 PL_doswitches = FALSE; /* -s is insecure in suid */
2923 CopLINE_inc(PL_curcop);
2924 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2925 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2926 Perl_croak(aTHX_ "No #! line");
2927 s = SvPV(PL_linestr,n_a)+2;
2929 while (!isSPACE(*s)) s++;
2930 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2931 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2932 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2933 Perl_croak(aTHX_ "Not a perl script");
2934 while (*s == ' ' || *s == '\t') s++;
2936 * #! arg must be what we saw above. They can invoke it by
2937 * mentioning suidperl explicitly, but they may not add any strange
2938 * arguments beyond what #! says if they do invoke suidperl that way.
2940 len = strlen(validarg);
2941 if (strEQ(validarg," PHOOEY ") ||
2942 strnNE(s,validarg,len) || !isSPACE(s[len]))
2943 Perl_croak(aTHX_ "Args must match #! line");
2946 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2947 PL_euid == PL_statbuf.st_uid)
2949 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2950 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2951 #endif /* IAMSUID */
2953 if (PL_euid) { /* oops, we're not the setuid root perl */
2954 (void)PerlIO_close(PL_rsfp);
2957 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2958 (int)PERL_REVISION, (int)PERL_VERSION,
2959 (int)PERL_SUBVERSION), PL_origargv);
2961 Perl_croak(aTHX_ "Can't do setuid\n");
2964 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2966 (void)setegid(PL_statbuf.st_gid);
2969 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2971 #ifdef HAS_SETRESGID
2972 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2974 PerlProc_setgid(PL_statbuf.st_gid);
2978 if (PerlProc_getegid() != PL_statbuf.st_gid)
2979 Perl_croak(aTHX_ "Can't do setegid!\n");
2981 if (PL_statbuf.st_mode & S_ISUID) {
2982 if (PL_statbuf.st_uid != PL_euid)
2984 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2987 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2989 #ifdef HAS_SETRESUID
2990 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2992 PerlProc_setuid(PL_statbuf.st_uid);
2996 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2997 Perl_croak(aTHX_ "Can't do seteuid!\n");
2999 else if (PL_uid) { /* oops, mustn't run as root */
3001 (void)seteuid((Uid_t)PL_uid);
3004 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3006 #ifdef HAS_SETRESUID
3007 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3009 PerlProc_setuid((Uid_t)PL_uid);
3013 if (PerlProc_geteuid() != PL_uid)
3014 Perl_croak(aTHX_ "Can't do seteuid!\n");
3017 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3018 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3021 else if (PL_preprocess)
3022 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3023 else if (fdscript >= 0)
3024 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3026 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3028 /* We absolutely must clear out any saved ids here, so we */
3029 /* exec the real perl, substituting fd script for scriptname. */
3030 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3031 PerlIO_rewind(PL_rsfp);
3032 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3033 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3034 if (!PL_origargv[which])
3035 Perl_croak(aTHX_ "Permission denied");
3036 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3037 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3038 #if defined(HAS_FCNTL) && defined(F_SETFD)
3039 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3041 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3042 (int)PERL_REVISION, (int)PERL_VERSION,
3043 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3044 Perl_croak(aTHX_ "Can't do setuid\n");
3045 #endif /* IAMSUID */
3047 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3048 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3049 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3050 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3052 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3055 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3056 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3057 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3058 /* not set-id, must be wrapped */
3064 S_find_beginning(pTHX)
3066 register char *s, *s2;
3068 /* skip forward in input to the real script? */
3071 #ifdef MACOS_TRADITIONAL
3072 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3074 while (PL_doextract || gMacPerl_AlwaysExtract) {
3075 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3076 if (!gMacPerl_AlwaysExtract)
3077 Perl_croak(aTHX_ "No Perl script found in input\n");
3079 if (PL_doextract) /* require explicit override ? */
3080 if (!OverrideExtract(PL_origfilename))
3081 Perl_croak(aTHX_ "User aborted script\n");
3083 PL_doextract = FALSE;
3085 /* Pater peccavi, file does not have #! */
3086 PerlIO_rewind(PL_rsfp);
3091 while (PL_doextract) {
3092 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3093 Perl_croak(aTHX_ "No Perl script found in input\n");
3095 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3096 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3097 PL_doextract = FALSE;
3098 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3100 while (*s == ' ' || *s == '\t') s++;
3102 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3103 if (strnEQ(s2-4,"perl",4))
3105 while ((s = moreswitches(s)))
3116 PL_uid = PerlProc_getuid();
3117 PL_euid = PerlProc_geteuid();
3118 PL_gid = PerlProc_getgid();
3119 PL_egid = PerlProc_getegid();
3121 PL_uid |= PL_gid << 16;
3122 PL_euid |= PL_egid << 16;
3124 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3128 S_forbid_setid(pTHX_ char *s)
3130 if (PL_euid != PL_uid)
3131 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3132 if (PL_egid != PL_gid)
3133 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3137 Perl_init_debugger(pTHX)
3139 HV *ostash = PL_curstash;
3141 PL_curstash = PL_debstash;
3142 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3143 AvREAL_off(PL_dbargs);
3144 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3145 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3146 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3147 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3148 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3149 sv_setiv(PL_DBsingle, 0);
3150 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3151 sv_setiv(PL_DBtrace, 0);
3152 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3153 sv_setiv(PL_DBsignal, 0);
3154 PL_curstash = ostash;
3157 #ifndef STRESS_REALLOC
3158 #define REASONABLE(size) (size)
3160 #define REASONABLE(size) (1) /* unreasonable */
3164 Perl_init_stacks(pTHX)
3166 /* start with 128-item stack and 8K cxstack */
3167 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3168 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3169 PL_curstackinfo->si_type = PERLSI_MAIN;
3170 PL_curstack = PL_curstackinfo->si_stack;
3171 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3173 PL_stack_base = AvARRAY(PL_curstack);
3174 PL_stack_sp = PL_stack_base;
3175 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3177 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3180 PL_tmps_max = REASONABLE(128);
3182 New(54,PL_markstack,REASONABLE(32),I32);
3183 PL_markstack_ptr = PL_markstack;
3184 PL_markstack_max = PL_markstack + REASONABLE(32);
3188 New(54,PL_scopestack,REASONABLE(32),I32);
3189 PL_scopestack_ix = 0;
3190 PL_scopestack_max = REASONABLE(32);
3192 New(54,PL_savestack,REASONABLE(128),ANY);
3193 PL_savestack_ix = 0;
3194 PL_savestack_max = REASONABLE(128);
3196 New(54,PL_retstack,REASONABLE(16),OP*);
3198 PL_retstack_max = REASONABLE(16);
3206 while (PL_curstackinfo->si_next)
3207 PL_curstackinfo = PL_curstackinfo->si_next;
3208 while (PL_curstackinfo) {
3209 PERL_SI *p = PL_curstackinfo->si_prev;
3210 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3211 Safefree(PL_curstackinfo->si_cxstack);
3212 Safefree(PL_curstackinfo);
3213 PL_curstackinfo = p;
3215 Safefree(PL_tmps_stack);
3216 Safefree(PL_markstack);
3217 Safefree(PL_scopestack);
3218 Safefree(PL_savestack);
3219 Safefree(PL_retstack);
3223 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3234 lex_start(PL_linestr);
3236 PL_subname = newSVpvn("main",4);
3240 S_init_predump_symbols(pTHX)
3245 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3246 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3247 GvMULTI_on(PL_stdingv);
3248 io = GvIOp(PL_stdingv);
3249 IoIFP(io) = PerlIO_stdin();
3250 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3252 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3254 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3257 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3259 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3261 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3263 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3264 GvMULTI_on(PL_stderrgv);
3265 io = GvIOp(PL_stderrgv);
3266 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3267 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3269 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3271 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3274 Safefree(PL_osname);
3275 PL_osname = savepv(OSNAME);
3279 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3284 char **dup_env_base = 0;
3285 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3286 int dup_env_count = 0;
3289 argc--,argv++; /* skip name of script */
3290 if (PL_doswitches) {
3291 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3294 if (argv[0][1] == '-' && !argv[0][2]) {
3298 if ((s = strchr(argv[0], '='))) {
3300 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3303 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3306 PL_toptarget = NEWSV(0,0);
3307 sv_upgrade(PL_toptarget, SVt_PVFM);
3308 sv_setpvn(PL_toptarget, "", 0);
3309 PL_bodytarget = NEWSV(0,0);
3310 sv_upgrade(PL_bodytarget, SVt_PVFM);
3311 sv_setpvn(PL_bodytarget, "", 0);
3312 PL_formtarget = PL_bodytarget;
3315 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3316 #ifdef MACOS_TRADITIONAL
3317 /* $0 is not majick on a Mac */
3318 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3320 sv_setpv(GvSV(tmpgv),PL_origfilename);
3321 magicname("0", "0", 1);
3324 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3326 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3328 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3330 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3331 GvMULTI_on(PL_argvgv);
3332 (void)gv_AVadd(PL_argvgv);
3333 av_clear(GvAVn(PL_argvgv));
3334 for (; argc > 0; argc--,argv++) {
3335 SV *sv = newSVpv(argv[0],0);
3336 av_push(GvAVn(PL_argvgv),sv);
3337 if (PL_widesyscalls)
3338 (void)sv_utf8_decode(sv);
3341 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3343 GvMULTI_on(PL_envgv);
3344 hv = GvHVn(PL_envgv);
3345 hv_magic(hv, Nullgv, 'E');
3346 #ifdef USE_ENVIRON_ARRAY
3347 /* Note that if the supplied env parameter is actually a copy
3348 of the global environ then it may now point to free'd memory
3349 if the environment has been modified since. To avoid this
3350 problem we treat env==NULL as meaning 'use the default'
3355 environ[0] = Nullch;
3356 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3359 for (env_base = env; *env; env++)
3361 if ((dup_env_base = (char **)
3362 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
3364 for (env = env_base, dup_env = dup_env_base;
3367 /* With environ one needs to use safesysmalloc(). */
3368 *dup_env = safesysmalloc(strlen(*env) + 1);
3369 (void)strcpy(*dup_env, *env);
3375 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3376 for (; *env; env++) {
3377 if (!(s = strchr(*env,'=')))
3383 sv = newSVpv(s--,0);
3384 (void)hv_store(hv, *env, s - *env, sv, 0);
3387 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3390 for (dup_env = dup_env_base; *dup_env; dup_env++)
3391 safesysfree(*dup_env);
3392 safesysfree(dup_env_base);
3394 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3395 #endif /* USE_ENVIRON_ARRAY */
3396 #ifdef DYNAMIC_ENV_FETCH
3397 HvNAME(hv) = savepv(ENV_HV_NAME);
3401 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3402 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3406 S_init_perllib(pTHX)
3411 s = PerlEnv_getenv("PERL5LIB");
3413 incpush(s, TRUE, TRUE);
3415 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3417 /* Treat PERL5?LIB as a possible search list logical name -- the
3418 * "natural" VMS idiom for a Unix path string. We allow each
3419 * element to be a set of |-separated directories for compatibility.
3423 if (my_trnlnm("PERL5LIB",buf,0))
3424 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3426 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3430 /* Use the ~-expanded versions of APPLLIB (undocumented),
3431 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3434 incpush(APPLLIB_EXP, TRUE, TRUE);
3438 incpush(ARCHLIB_EXP, FALSE, FALSE);
3440 #ifdef MACOS_TRADITIONAL
3442 struct stat tmpstatbuf;
3443 SV * privdir = NEWSV(55, 0);
3444 char * macperl = PerlEnv_getenv("MACPERL");
3449 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3450 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3451 incpush(SvPVX(privdir), TRUE, FALSE);
3452 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3453 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3454 incpush(SvPVX(privdir), TRUE, FALSE);
3456 SvREFCNT_dec(privdir);
3459 incpush(":", FALSE, FALSE);
3462 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3465 incpush(PRIVLIB_EXP, TRUE, FALSE);
3467 incpush(PRIVLIB_EXP, FALSE, FALSE);
3471 /* sitearch is always relative to sitelib on Windows for
3472 * DLL-based path intuition to work correctly */
3473 # if !defined(WIN32)
3474 incpush(SITEARCH_EXP, FALSE, FALSE);
3480 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3482 incpush(SITELIB_EXP, FALSE, FALSE);
3486 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3487 incpush(SITELIB_STEM, FALSE, TRUE);
3490 #ifdef PERL_VENDORARCH_EXP
3491 /* vendorarch is always relative to vendorlib on Windows for
3492 * DLL-based path intuition to work correctly */
3493 # if !defined(WIN32)
3494 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3498 #ifdef PERL_VENDORLIB_EXP
3500 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3502 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3506 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3507 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3510 #ifdef PERL_OTHERLIBDIRS
3511 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3515 incpush(".", FALSE, FALSE);
3516 #endif /* MACOS_TRADITIONAL */
3519 #if defined(DOSISH) || defined(EPOC)
3520 # define PERLLIB_SEP ';'
3523 # define PERLLIB_SEP '|'
3525 # if defined(MACOS_TRADITIONAL)
3526 # define PERLLIB_SEP ','
3528 # define PERLLIB_SEP ':'
3532 #ifndef PERLLIB_MANGLE
3533 # define PERLLIB_MANGLE(s,n) (s)
3537 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3539 SV *subdir = Nullsv;
3544 if (addsubdirs || addoldvers) {
3545 subdir = sv_newmortal();
3548 /* Break at all separators */
3550 SV *libdir = NEWSV(55,0);
3553 /* skip any consecutive separators */
3554 while ( *p == PERLLIB_SEP ) {
3555 /* Uncomment the next line for PATH semantics */
3556 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3560 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3561 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3566 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3567 p = Nullch; /* break out */
3569 #ifdef MACOS_TRADITIONAL
3570 if (!strchr(SvPVX(libdir), ':'))
3571 sv_insert(libdir, 0, 0, ":", 1);
3572 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3573 sv_catpv(libdir, ":");
3577 * BEFORE pushing libdir onto @INC we may first push version- and
3578 * archname-specific sub-directories.
3580 if (addsubdirs || addoldvers) {
3581 #ifdef PERL_INC_VERSION_LIST
3582 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3583 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3584 const char **incver;
3586 struct stat tmpstatbuf;
3591 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3593 while (unix[len-1] == '/') len--; /* Cosmetic */
3594 sv_usepvn(libdir,unix,len);
3597 PerlIO_printf(Perl_error_log,
3598 "Failed to unixify @INC element \"%s\"\n",
3602 #ifdef MACOS_TRADITIONAL
3603 #define PERL_AV_SUFFIX_FMT ""
3604 #define PERL_ARCH_FMT "%s:"
3605 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3607 #define PERL_AV_SUFFIX_FMT "/"
3608 #define PERL_ARCH_FMT "/%s"
3609 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3611 /* .../version/archname if -d .../version/archname */
3612 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3614 (int)PERL_REVISION, (int)PERL_VERSION,
3615 (int)PERL_SUBVERSION, ARCHNAME);
3616 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3617 S_ISDIR(tmpstatbuf.st_mode))
3618 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3620 /* .../version if -d .../version */
3621 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3622 (int)PERL_REVISION, (int)PERL_VERSION,
3623 (int)PERL_SUBVERSION);
3624 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3625 S_ISDIR(tmpstatbuf.st_mode))
3626 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3628 /* .../archname if -d .../archname */
3629 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3630 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3631 S_ISDIR(tmpstatbuf.st_mode))
3632 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3635 #ifdef PERL_INC_VERSION_LIST
3637 for (incver = incverlist; *incver; incver++) {
3638 /* .../xxx if -d .../xxx */
3639 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3640 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3641 S_ISDIR(tmpstatbuf.st_mode))
3642 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3648 /* finally push this lib directory on the end of @INC */
3649 av_push(GvAVn(PL_incgv), libdir);
3654 STATIC struct perl_thread *
3655 S_init_main_thread(pTHX)
3657 #if !defined(PERL_IMPLICIT_CONTEXT)
3658 struct perl_thread *thr;
3662 Newz(53, thr, 1, struct perl_thread);
3663 PL_curcop = &PL_compiling;
3664 thr->interp = PERL_GET_INTERP;
3665 thr->cvcache = newHV();
3666 thr->threadsv = newAV();
3667 /* thr->threadsvp is set when find_threadsv is called */
3668 thr->specific = newAV();
3669 thr->flags = THRf_R_JOINABLE;
3670 MUTEX_INIT(&thr->mutex);
3671 /* Handcraft thrsv similarly to mess_sv */
3672 New(53, PL_thrsv, 1, SV);
3673 Newz(53, xpv, 1, XPV);
3674 SvFLAGS(PL_thrsv) = SVt_PV;
3675 SvANY(PL_thrsv) = (void*)xpv;
3676 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3677 SvPVX(PL_thrsv) = (char*)thr;
3678 SvCUR_set(PL_thrsv, sizeof(thr));
3679 SvLEN_set(PL_thrsv, sizeof(thr));
3680 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3681 thr->oursv = PL_thrsv;
3682 PL_chopset = " \n-";
3685 MUTEX_LOCK(&PL_threads_mutex);
3691 MUTEX_UNLOCK(&PL_threads_mutex);
3693 #ifdef HAVE_THREAD_INTERN
3694 Perl_init_thread_intern(thr);
3697 #ifdef SET_THREAD_SELF
3698 SET_THREAD_SELF(thr);
3700 thr->self = pthread_self();
3701 #endif /* SET_THREAD_SELF */
3705 * These must come after the thread self setting
3706 * because sv_setpvn does SvTAINT and the taint
3707 * fields thread selfness being set.
3709 PL_toptarget = NEWSV(0,0);
3710 sv_upgrade(PL_toptarget, SVt_PVFM);
3711 sv_setpvn(PL_toptarget, "", 0);
3712 PL_bodytarget = NEWSV(0,0);
3713 sv_upgrade(PL_bodytarget, SVt_PVFM);
3714 sv_setpvn(PL_bodytarget, "", 0);
3715 PL_formtarget = PL_bodytarget;
3716 thr->errsv = newSVpvn("", 0);
3717 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3720 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3721 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3722 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3723 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3724 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3726 PL_reginterp_cnt = 0;
3730 #endif /* USE_THREADS */
3733 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3736 line_t oldline = CopLINE(PL_curcop);
3742 while (AvFILL(paramList) >= 0) {
3743 cv = (CV*)av_shift(paramList);
3744 if ((PL_minus_c & 0x10) && (paramList == PL_beginav)) {
3745 /* save PL_beginav for compiler */
3746 if (! PL_beginav_save)
3747 PL_beginav_save = newAV();
3748 av_push(PL_beginav_save, (SV*)cv);
3752 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3753 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3759 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3763 (void)SvPV(atsv, len);
3766 PL_curcop = &PL_compiling;
3767 CopLINE_set(PL_curcop, oldline);
3768 if (paramList == PL_beginav)
3769 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3771 Perl_sv_catpvf(aTHX_ atsv,
3772 "%s failed--call queue aborted",
3773 paramList == PL_checkav ? "CHECK"
3774 : paramList == PL_initav ? "INIT"
3776 while (PL_scopestack_ix > oldscope)
3779 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3786 /* my_exit() was called */
3787 while (PL_scopestack_ix > oldscope)
3790 PL_curstash = PL_defstash;
3791 PL_curcop = &PL_compiling;
3792 CopLINE_set(PL_curcop, oldline);
3794 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3795 if (paramList == PL_beginav)
3796 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3798 Perl_croak(aTHX_ "%s failed--call queue aborted",
3799 paramList == PL_checkav ? "CHECK"
3800 : paramList == PL_initav ? "INIT"
3807 PL_curcop = &PL_compiling;
3808 CopLINE_set(PL_curcop, oldline);
3811 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3819 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3821 S_vcall_list_body(pTHX_ va_list args)
3823 CV *cv = va_arg(args, CV*);
3824 return call_list_body(cv);
3829 S_call_list_body(pTHX_ CV *cv)
3831 PUSHMARK(PL_stack_sp);
3832 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3837 Perl_my_exit(pTHX_ U32 status)
3839 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3840 thr, (unsigned long) status));
3849 STATUS_NATIVE_SET(status);
3856 Perl_my_failure_exit(pTHX)
3859 if (vaxc$errno & 1) {
3860 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3861 STATUS_NATIVE_SET(44);
3864 if (!vaxc$errno && errno) /* unlikely */
3865 STATUS_NATIVE_SET(44);
3867 STATUS_NATIVE_SET(vaxc$errno);
3872 STATUS_POSIX_SET(errno);
3874 exitstatus = STATUS_POSIX >> 8;
3875 if (exitstatus & 255)
3876 STATUS_POSIX_SET(exitstatus);
3878 STATUS_POSIX_SET(255);
3885 S_my_exit_jump(pTHX)
3887 register PERL_CONTEXT *cx;
3892 SvREFCNT_dec(PL_e_script);
3893 PL_e_script = Nullsv;
3896 POPSTACK_TO(PL_mainstack);
3897 if (cxstack_ix >= 0) {
3900 POPBLOCK(cx,PL_curpm);
3912 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3915 p = SvPVX(PL_e_script);
3916 nl = strchr(p, '\n');
3917 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3919 filter_del(read_e_script);
3922 sv_catpvn(buf_sv, p, nl-p);
3923 sv_chop(PL_e_script, nl);