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 #ifdef HAVE_INTERP_INTERN
664 /* Destruct the global string table. */
666 /* Yell and reset the HeVAL() slots that are still holding refcounts,
667 * so that sv_free() won't fail on them.
675 max = HvMAX(PL_strtab);
676 array = HvARRAY(PL_strtab);
679 if (hent && ckWARN_d(WARN_INTERNAL)) {
680 Perl_warner(aTHX_ WARN_INTERNAL,
681 "Unbalanced string table refcount: (%d) for \"%s\"",
682 HeVAL(hent) - Nullsv, HeKEY(hent));
683 HeVAL(hent) = Nullsv;
693 SvREFCNT_dec(PL_strtab);
695 /* free special SVs */
697 SvREFCNT(&PL_sv_yes) = 0;
698 sv_clear(&PL_sv_yes);
699 SvANY(&PL_sv_yes) = NULL;
700 SvFLAGS(&PL_sv_yes) = 0;
702 SvREFCNT(&PL_sv_no) = 0;
704 SvANY(&PL_sv_no) = NULL;
705 SvFLAGS(&PL_sv_no) = 0;
707 SvREFCNT(&PL_sv_undef) = 0;
708 SvREADONLY_off(&PL_sv_undef);
710 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
711 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
713 Safefree(PL_origfilename);
714 Safefree(PL_reg_start_tmp);
716 Safefree(PL_reg_curpm);
717 Safefree(PL_reg_poscache);
718 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
719 Safefree(PL_op_mask);
720 Safefree(PL_psig_ptr);
721 Safefree(PL_psig_name);
723 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
725 DEBUG_P(debprofdump());
727 MUTEX_DESTROY(&PL_strtab_mutex);
728 MUTEX_DESTROY(&PL_sv_mutex);
729 MUTEX_DESTROY(&PL_eval_mutex);
730 MUTEX_DESTROY(&PL_cred_mutex);
731 COND_DESTROY(&PL_eval_cond);
732 #ifdef EMULATE_ATOMIC_REFCOUNTS
733 MUTEX_DESTROY(&PL_svref_mutex);
734 #endif /* EMULATE_ATOMIC_REFCOUNTS */
736 /* As the penultimate thing, free the non-arena SV for thrsv */
737 Safefree(SvPVX(PL_thrsv));
738 Safefree(SvANY(PL_thrsv));
741 #endif /* USE_THREADS */
745 /* As the absolutely last thing, free the non-arena SV for mess() */
748 /* it could have accumulated taint magic */
749 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
752 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
753 moremagic = mg->mg_moremagic;
754 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
755 Safefree(mg->mg_ptr);
759 /* we know that type >= SVt_PV */
760 (void)SvOOK_off(PL_mess_sv);
761 Safefree(SvPVX(PL_mess_sv));
762 Safefree(SvANY(PL_mess_sv));
763 Safefree(PL_mess_sv);
769 =for apidoc perl_free
771 Releases a Perl interpreter. See L<perlembed>.
779 #if defined(PERL_OBJECT)
782 # if defined(PERL_IMPLICIT_SYS) && defined(WIN32)
783 void *host = w32_internal_host;
785 win32_delete_internal_host(host);
793 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
795 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
796 PL_exitlist[PL_exitlistlen].fn = fn;
797 PL_exitlist[PL_exitlistlen].ptr = ptr;
802 =for apidoc perl_parse
804 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
810 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
820 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
823 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
824 setuid perl scripts securely.\n");
828 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
829 _dyld_lookup_and_bind
830 ("__environ", (unsigned long *) &environ_pointer, NULL);
835 #ifndef VMS /* VMS doesn't have environ array */
836 PL_origenviron = environ;
841 /* Come here if running an undumped a.out. */
843 PL_origfilename = savepv(argv[0]);
844 PL_do_undump = FALSE;
845 cxstack_ix = -1; /* start label stack again */
847 init_postdump_symbols(argc,argv,env);
852 PL_curpad = AvARRAY(PL_comppad);
853 op_free(PL_main_root);
854 PL_main_root = Nullop;
856 PL_main_start = Nullop;
857 SvREFCNT_dec(PL_main_cv);
861 oldscope = PL_scopestack_ix;
862 PL_dowarn = G_WARN_OFF;
864 #ifdef PERL_FLEXIBLE_EXCEPTIONS
865 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
871 #ifndef PERL_FLEXIBLE_EXCEPTIONS
872 parse_body(env,xsinit);
875 call_list(oldscope, PL_checkav);
882 /* my_exit() was called */
883 while (PL_scopestack_ix > oldscope)
886 PL_curstash = PL_defstash;
888 call_list(oldscope, PL_checkav);
889 ret = STATUS_NATIVE_EXPORT;
892 PerlIO_printf(Perl_error_log, "panic: top_env\n");
900 #ifdef PERL_FLEXIBLE_EXCEPTIONS
902 S_vparse_body(pTHX_ va_list args)
904 char **env = va_arg(args, char**);
905 XSINIT_t xsinit = va_arg(args, XSINIT_t);
907 return parse_body(env, xsinit);
912 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
915 int argc = PL_origargc;
916 char **argv = PL_origargv;
917 char *scriptname = NULL;
919 VOL bool dosearch = FALSE;
924 char *cddir = Nullch;
926 sv_setpvn(PL_linestr,"",0);
927 sv = newSVpvn("",0); /* first used for -I flags */
931 for (argc--,argv++; argc > 0; argc--,argv++) {
932 if (argv[0][0] != '-' || !argv[0][1])
936 validarg = " PHOOEY ";
945 win32_argv2utf8(argc-1, argv+1);
948 #ifndef PERL_STRICT_CR
972 if ((s = moreswitches(s)))
982 #ifdef MACOS_TRADITIONAL
983 /* ignore -e for Dev:Pseudo argument */
984 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
987 if (PL_euid != PL_uid || PL_egid != PL_gid)
988 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
990 PL_e_script = newSVpvn("",0);
991 filter_add(read_e_script, NULL);
994 sv_catpv(PL_e_script, s);
996 sv_catpv(PL_e_script, argv[1]);
1000 Perl_croak(aTHX_ "No code specified for -e");
1001 sv_catpv(PL_e_script, "\n");
1004 case 'I': /* -I handled both here and in moreswitches() */
1006 if (!*++s && (s=argv[1]) != Nullch) {
1011 STRLEN len = strlen(s);
1012 p = savepvn(s, len);
1013 incpush(p, TRUE, TRUE);
1014 sv_catpvn(sv, "-I", 2);
1015 sv_catpvn(sv, p, len);
1016 sv_catpvn(sv, " ", 1);
1020 Perl_croak(aTHX_ "No directory specified for -I");
1024 PL_preprocess = TRUE;
1034 PL_preambleav = newAV();
1035 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1037 PL_Sv = newSVpv("print myconfig();",0);
1039 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1041 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1043 sv_catpv(PL_Sv,"\" Compile-time options:");
1045 sv_catpv(PL_Sv," DEBUGGING");
1047 # ifdef MULTIPLICITY
1048 sv_catpv(PL_Sv," MULTIPLICITY");
1051 sv_catpv(PL_Sv," USE_THREADS");
1053 # ifdef USE_ITHREADS
1054 sv_catpv(PL_Sv," USE_ITHREADS");
1056 # ifdef USE_64_BIT_INT
1057 sv_catpv(PL_Sv," USE_64_BIT_INT");
1059 # ifdef USE_64_BIT_ALL
1060 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1062 # ifdef USE_LONG_DOUBLE
1063 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1065 # ifdef USE_LARGE_FILES
1066 sv_catpv(PL_Sv," USE_LARGE_FILES");
1069 sv_catpv(PL_Sv," USE_SOCKS");
1072 sv_catpv(PL_Sv," PERL_OBJECT");
1074 # ifdef PERL_IMPLICIT_CONTEXT
1075 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1077 # ifdef PERL_IMPLICIT_SYS
1078 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1080 sv_catpv(PL_Sv,"\\n\",");
1082 #if defined(LOCAL_PATCH_COUNT)
1083 if (LOCAL_PATCH_COUNT > 0) {
1085 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1086 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1087 if (PL_localpatches[i])
1088 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1092 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1095 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1097 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1100 sv_catpv(PL_Sv, "; \
1102 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1103 print \" \\%ENV:\\n @env\\n\" if @env; \
1104 print \" \\@INC:\\n @INC\\n\";");
1107 PL_Sv = newSVpv("config_vars(qw(",0);
1108 sv_catpv(PL_Sv, ++s);
1109 sv_catpv(PL_Sv, "))");
1112 av_push(PL_preambleav, PL_Sv);
1113 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1116 PL_doextract = TRUE;
1124 if (!*++s || isSPACE(*s)) {
1128 /* catch use of gnu style long options */
1129 if (strEQ(s, "version")) {
1133 if (strEQ(s, "help")) {
1140 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1146 #ifndef SECURE_INTERNAL_GETENV
1149 (s = PerlEnv_getenv("PERL5OPT")))
1153 if (*s == '-' && *(s+1) == 'T')
1166 if (!strchr("DIMUdmw", *s))
1167 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1168 s = moreswitches(s);
1174 scriptname = argv[0];
1177 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1179 else if (scriptname == Nullch) {
1181 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1189 open_script(scriptname,dosearch,sv,&fdscript);
1191 validate_suid(validarg, scriptname,fdscript);
1194 #if defined(SIGCHLD) || defined(SIGCLD)
1197 # define SIGCHLD SIGCLD
1199 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1200 if (sigstate == SIG_IGN) {
1201 if (ckWARN(WARN_SIGNAL))
1202 Perl_warner(aTHX_ WARN_SIGNAL,
1203 "Can't ignore signal CHLD, forcing to default");
1204 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1210 #ifdef MACOS_TRADITIONAL
1211 if (PL_doextract || gMacPerl_AlwaysExtract) {
1216 if (cddir && PerlDir_chdir(cddir) < 0)
1217 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1221 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1222 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1223 CvUNIQUE_on(PL_compcv);
1225 PL_comppad = newAV();
1226 av_push(PL_comppad, Nullsv);
1227 PL_curpad = AvARRAY(PL_comppad);
1228 PL_comppad_name = newAV();
1229 PL_comppad_name_fill = 0;
1230 PL_min_intro_pending = 0;
1233 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1234 PL_curpad[0] = (SV*)newAV();
1235 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1236 CvOWNER(PL_compcv) = 0;
1237 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1238 MUTEX_INIT(CvMUTEXP(PL_compcv));
1239 #endif /* USE_THREADS */
1241 comppadlist = newAV();
1242 AvREAL_off(comppadlist);
1243 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1244 av_store(comppadlist, 1, (SV*)PL_comppad);
1245 CvPADLIST(PL_compcv) = comppadlist;
1247 boot_core_UNIVERSAL();
1249 boot_core_xsutils();
1253 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1255 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__)
1264 init_predump_symbols();
1265 /* init_postdump_symbols not currently designed to be called */
1266 /* more than once (ENV isn't cleared first, for example) */
1267 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1269 init_postdump_symbols(argc,argv,env);
1273 /* now parse the script */
1275 SETERRNO(0,SS$_NORMAL);
1277 #ifdef MACOS_TRADITIONAL
1278 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1280 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1282 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1283 MacPerl_MPWFileName(PL_origfilename));
1287 if (yyparse() || PL_error_count) {
1289 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1291 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1296 CopLINE_set(PL_curcop, 0);
1297 PL_curstash = PL_defstash;
1298 PL_preprocess = FALSE;
1300 SvREFCNT_dec(PL_e_script);
1301 PL_e_script = Nullsv;
1304 /* now that script is parsed, we can modify record separator */
1305 SvREFCNT_dec(PL_rs);
1306 PL_rs = SvREFCNT_inc(PL_nrs);
1307 sv_setsv(get_sv("/", TRUE), PL_rs);
1312 SAVECOPFILE(PL_curcop);
1313 SAVECOPLINE(PL_curcop);
1314 gv_check(PL_defstash);
1321 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1322 dump_mstats("after compilation:");
1331 =for apidoc perl_run
1333 Tells a Perl interpreter to run. See L<perlembed>.
1349 oldscope = PL_scopestack_ix;
1351 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1353 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1359 cxstack_ix = -1; /* start context stack again */
1361 case 0: /* normal completion */
1362 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1367 case 2: /* my_exit() */
1368 while (PL_scopestack_ix > oldscope)
1371 PL_curstash = PL_defstash;
1372 if (PL_endav && !PL_minus_c)
1373 call_list(oldscope, PL_endav);
1375 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1376 dump_mstats("after execution: ");
1378 ret = STATUS_NATIVE_EXPORT;
1382 POPSTACK_TO(PL_mainstack);
1385 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1395 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1397 S_vrun_body(pTHX_ va_list args)
1399 I32 oldscope = va_arg(args, I32);
1401 return run_body(oldscope);
1407 S_run_body(pTHX_ I32 oldscope)
1411 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1412 PL_sawampersand ? "Enabling" : "Omitting"));
1414 if (!PL_restartop) {
1415 DEBUG_x(dump_all());
1416 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1417 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1421 #ifdef MACOS_TRADITIONAL
1422 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1424 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1428 if (PERLDB_SINGLE && PL_DBsingle)
1429 sv_setiv(PL_DBsingle, 1);
1431 call_list(oldscope, PL_initav);
1437 PL_op = PL_restartop;
1441 else if (PL_main_start) {
1442 CvDEPTH(PL_main_cv) = 1;
1443 PL_op = PL_main_start;
1453 =for apidoc p||get_sv
1455 Returns the SV of the specified Perl scalar. If C<create> is set and the
1456 Perl variable does not exist then it will be created. If C<create> is not
1457 set and the variable does not exist then NULL is returned.
1463 Perl_get_sv(pTHX_ const char *name, I32 create)
1467 if (name[1] == '\0' && !isALPHA(name[0])) {
1468 PADOFFSET tmp = find_threadsv(name);
1469 if (tmp != NOT_IN_PAD) {
1471 return THREADSV(tmp);
1474 #endif /* USE_THREADS */
1475 gv = gv_fetchpv(name, create, SVt_PV);
1482 =for apidoc p||get_av
1484 Returns the AV of the specified Perl array. If C<create> is set and the
1485 Perl variable does not exist then it will be created. If C<create> is not
1486 set and the variable does not exist then NULL is returned.
1492 Perl_get_av(pTHX_ const char *name, I32 create)
1494 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1503 =for apidoc p||get_hv
1505 Returns the HV of the specified Perl hash. If C<create> is set and the
1506 Perl variable does not exist then it will be created. If C<create> is not
1507 set and the variable does not exist then NULL is returned.
1513 Perl_get_hv(pTHX_ const char *name, I32 create)
1515 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1524 =for apidoc p||get_cv
1526 Returns the CV of the specified Perl subroutine. If C<create> is set and
1527 the Perl subroutine does not exist then it will be declared (which has the
1528 same effect as saying C<sub name;>). If C<create> is not set and the
1529 subroutine does not exist then NULL is returned.
1535 Perl_get_cv(pTHX_ const char *name, I32 create)
1537 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1538 /* XXX unsafe for threads if eval_owner isn't held */
1539 /* XXX this is probably not what they think they're getting.
1540 * It has the same effect as "sub name;", i.e. just a forward
1542 if (create && !GvCVu(gv))
1543 return newSUB(start_subparse(FALSE, 0),
1544 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1552 /* Be sure to refetch the stack pointer after calling these routines. */
1555 =for apidoc p||call_argv
1557 Performs a callback to the specified Perl sub. See L<perlcall>.
1563 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1565 /* See G_* flags in cop.h */
1566 /* null terminated arg list */
1573 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1578 return call_pv(sub_name, flags);
1582 =for apidoc p||call_pv
1584 Performs a callback to the specified Perl sub. See L<perlcall>.
1590 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1591 /* name of the subroutine */
1592 /* See G_* flags in cop.h */
1594 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1598 =for apidoc p||call_method
1600 Performs a callback to the specified Perl method. The blessed object must
1601 be on the stack. See L<perlcall>.
1607 Perl_call_method(pTHX_ const char *methname, I32 flags)
1608 /* name of the subroutine */
1609 /* See G_* flags in cop.h */
1611 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1614 /* May be called with any of a CV, a GV, or an SV containing the name. */
1616 =for apidoc p||call_sv
1618 Performs a callback to the Perl sub whose name is in the SV. See
1625 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1626 /* See G_* flags in cop.h */
1629 LOGOP myop; /* fake syntax tree node */
1634 bool oldcatch = CATCH_GET;
1639 if (flags & G_DISCARD) {
1644 Zero(&myop, 1, LOGOP);
1645 myop.op_next = Nullop;
1646 if (!(flags & G_NOARGS))
1647 myop.op_flags |= OPf_STACKED;
1648 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1649 (flags & G_ARRAY) ? OPf_WANT_LIST :
1654 EXTEND(PL_stack_sp, 1);
1655 *++PL_stack_sp = sv;
1657 oldscope = PL_scopestack_ix;
1659 if (PERLDB_SUB && PL_curstash != PL_debstash
1660 /* Handle first BEGIN of -d. */
1661 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1662 /* Try harder, since this may have been a sighandler, thus
1663 * curstash may be meaningless. */
1664 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1665 && !(flags & G_NODEBUG))
1666 PL_op->op_private |= OPpENTERSUB_DB;
1668 if (flags & G_METHOD) {
1669 Zero(&method_op, 1, UNOP);
1670 method_op.op_next = PL_op;
1671 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1672 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1673 PL_op = (OP*)&method_op;
1676 if (!(flags & G_EVAL)) {
1678 call_body((OP*)&myop, FALSE);
1679 retval = PL_stack_sp - (PL_stack_base + oldmark);
1680 CATCH_SET(oldcatch);
1683 myop.op_other = (OP*)&myop;
1685 /* we're trying to emulate pp_entertry() here */
1687 register PERL_CONTEXT *cx;
1688 I32 gimme = GIMME_V;
1693 push_return(Nullop);
1694 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1696 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1698 PL_in_eval = EVAL_INEVAL;
1699 if (flags & G_KEEPERR)
1700 PL_in_eval |= EVAL_KEEPERR;
1706 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1708 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1715 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1717 call_body((OP*)&myop, FALSE);
1719 retval = PL_stack_sp - (PL_stack_base + oldmark);
1720 if (!(flags & G_KEEPERR))
1727 /* my_exit() was called */
1728 PL_curstash = PL_defstash;
1731 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1732 Perl_croak(aTHX_ "Callback called exit");
1737 PL_op = PL_restartop;
1741 PL_stack_sp = PL_stack_base + oldmark;
1742 if (flags & G_ARRAY)
1746 *++PL_stack_sp = &PL_sv_undef;
1751 if (PL_scopestack_ix > oldscope) {
1755 register PERL_CONTEXT *cx;
1767 if (flags & G_DISCARD) {
1768 PL_stack_sp = PL_stack_base + oldmark;
1777 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1779 S_vcall_body(pTHX_ va_list args)
1781 OP *myop = va_arg(args, OP*);
1782 int is_eval = va_arg(args, int);
1784 call_body(myop, is_eval);
1790 S_call_body(pTHX_ OP *myop, int is_eval)
1794 if (PL_op == myop) {
1796 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1798 PL_op = Perl_pp_entersub(aTHX); /* this does */
1804 /* Eval a string. The G_EVAL flag is always assumed. */
1807 =for apidoc p||eval_sv
1809 Tells Perl to C<eval> the string in the SV.
1815 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1817 /* See G_* flags in cop.h */
1820 UNOP myop; /* fake syntax tree node */
1821 I32 oldmark = SP - PL_stack_base;
1828 if (flags & G_DISCARD) {
1835 Zero(PL_op, 1, UNOP);
1836 EXTEND(PL_stack_sp, 1);
1837 *++PL_stack_sp = sv;
1838 oldscope = PL_scopestack_ix;
1840 if (!(flags & G_NOARGS))
1841 myop.op_flags = OPf_STACKED;
1842 myop.op_next = Nullop;
1843 myop.op_type = OP_ENTEREVAL;
1844 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1845 (flags & G_ARRAY) ? OPf_WANT_LIST :
1847 if (flags & G_KEEPERR)
1848 myop.op_flags |= OPf_SPECIAL;
1850 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1852 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1859 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1861 call_body((OP*)&myop,TRUE);
1863 retval = PL_stack_sp - (PL_stack_base + oldmark);
1864 if (!(flags & G_KEEPERR))
1871 /* my_exit() was called */
1872 PL_curstash = PL_defstash;
1875 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1876 Perl_croak(aTHX_ "Callback called exit");
1881 PL_op = PL_restartop;
1885 PL_stack_sp = PL_stack_base + oldmark;
1886 if (flags & G_ARRAY)
1890 *++PL_stack_sp = &PL_sv_undef;
1896 if (flags & G_DISCARD) {
1897 PL_stack_sp = PL_stack_base + oldmark;
1907 =for apidoc p||eval_pv
1909 Tells Perl to C<eval> the given string and return an SV* result.
1915 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1918 SV* sv = newSVpv(p, 0);
1920 eval_sv(sv, G_SCALAR);
1927 if (croak_on_error && SvTRUE(ERRSV)) {
1929 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1935 /* Require a module. */
1938 =for apidoc p||require_pv
1940 Tells Perl to C<require> a module.
1946 Perl_require_pv(pTHX_ const char *pv)
1950 PUSHSTACKi(PERLSI_REQUIRE);
1952 sv = sv_newmortal();
1953 sv_setpv(sv, "require '");
1956 eval_sv(sv, G_DISCARD);
1962 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
1966 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
1967 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1971 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
1973 /* This message really ought to be max 23 lines.
1974 * Removed -h because the user already knows that opton. Others? */
1976 static char *usage_msg[] = {
1977 "-0[octal] specify record separator (\\0, if no argument)",
1978 "-a autosplit mode with -n or -p (splits $_ into @F)",
1979 "-C enable native wide character system interfaces",
1980 "-c check syntax only (runs BEGIN and CHECK blocks)",
1981 "-d[:debugger] run program under debugger",
1982 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1983 "-e 'command' one line of program (several -e's allowed, omit programfile)",
1984 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
1985 "-i[extension] edit <> files in place (makes backup if extension supplied)",
1986 "-Idirectory specify @INC/#include directory (several -I's allowed)",
1987 "-l[octal] enable line ending processing, specifies line terminator",
1988 "-[mM][-]module execute `use/no module...' before executing program",
1989 "-n assume 'while (<>) { ... }' loop around program",
1990 "-p assume loop like -n but print line also, like sed",
1991 "-P run program through C preprocessor before compilation",
1992 "-s enable rudimentary parsing for switches after programfile",
1993 "-S look for programfile using PATH environment variable",
1994 "-T enable tainting checks",
1995 "-u dump core after parsing program",
1996 "-U allow unsafe operations",
1997 "-v print version, subversion (includes VERY IMPORTANT perl info)",
1998 "-V[:variable] print configuration summary (or a single Config.pm variable)",
1999 "-w enable many useful warnings (RECOMMENDED)",
2000 "-W enable all warnings",
2001 "-X disable all warnings",
2002 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2006 char **p = usage_msg;
2008 PerlIO_printf(PerlIO_stdout(),
2009 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2012 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2015 /* This routine handles any switches that can be given during run */
2018 Perl_moreswitches(pTHX_ char *s)
2027 numlen = 0; /* disallow underscores */
2028 rschar = (U32)scan_oct(s, 4, &numlen);
2029 SvREFCNT_dec(PL_nrs);
2030 if (rschar & ~((U8)~0))
2031 PL_nrs = &PL_sv_undef;
2032 else if (!rschar && numlen >= 2)
2033 PL_nrs = newSVpvn("", 0);
2036 PL_nrs = newSVpvn(&ch, 1);
2041 PL_widesyscalls = TRUE;
2046 PL_splitstr = savepv(s + 1);
2060 if (*s == ':' || *s == '=') {
2061 my_setenv("PERL5DB", Perl_form(aTHX_ "use Devel::%s;", ++s));
2065 PL_perldb = PERLDB_ALL;
2073 if (isALPHA(s[1])) {
2074 static char debopts[] = "psltocPmfrxuLHXDS";
2077 for (s++; *s && (d = strchr(debopts,*s)); s++)
2078 PL_debug |= 1 << (d - debopts);
2081 PL_debug = atoi(s+1);
2082 for (s++; isDIGIT(*s); s++) ;
2084 PL_debug |= 0x80000000;
2087 if (ckWARN_d(WARN_DEBUGGING))
2088 Perl_warner(aTHX_ WARN_DEBUGGING,
2089 "Recompile perl with -DDEBUGGING to use -D switch\n");
2090 for (s++; isALNUM(*s); s++) ;
2096 usage(PL_origargv[0]);
2100 Safefree(PL_inplace);
2101 PL_inplace = savepv(s+1);
2103 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2106 if (*s == '-') /* Additional switches on #! line. */
2110 case 'I': /* -I handled both here and in parse_perl() */
2113 while (*s && isSPACE(*s))
2118 /* ignore trailing spaces (possibly followed by other switches) */
2120 for (e = p; *e && !isSPACE(*e); e++) ;
2124 } while (*p && *p != '-');
2125 e = savepvn(s, e-s);
2126 incpush(e, TRUE, TRUE);
2133 Perl_croak(aTHX_ "No directory specified for -I");
2141 PL_ors = savepv("\n");
2143 numlen = 0; /* disallow underscores */
2144 *PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2149 if (RsPARA(PL_nrs)) {
2154 PL_ors = SvPV(PL_nrs, PL_orslen);
2155 PL_ors = savepvn(PL_ors, PL_orslen);
2159 forbid_setid("-M"); /* XXX ? */
2162 forbid_setid("-m"); /* XXX ? */
2167 /* -M-foo == 'no foo' */
2168 if (*s == '-') { use = "no "; ++s; }
2169 sv = newSVpv(use,0);
2171 /* We allow -M'Module qw(Foo Bar)' */
2172 while(isALNUM(*s) || *s==':') ++s;
2174 sv_catpv(sv, start);
2175 if (*(start-1) == 'm') {
2177 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2178 sv_catpv( sv, " ()");
2182 Perl_croak(aTHX_ "Module name required with -%c option",
2184 sv_catpvn(sv, start, s-start);
2185 sv_catpv(sv, " split(/,/,q{");
2191 PL_preambleav = newAV();
2192 av_push(PL_preambleav, sv);
2195 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2207 PL_doswitches = TRUE;
2212 Perl_croak(aTHX_ "Too late for \"-T\" option");
2216 #ifdef MACOS_TRADITIONAL
2217 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2219 PL_do_undump = TRUE;
2227 PerlIO_printf(PerlIO_stdout(),
2228 Perl_form(aTHX_ "\nThis is perl, v%vd built for %s",
2229 PL_patchlevel, ARCHNAME));
2230 #if defined(LOCAL_PATCH_COUNT)
2231 if (LOCAL_PATCH_COUNT > 0)
2232 PerlIO_printf(PerlIO_stdout(),
2233 "\n(with %d registered patch%s, "
2234 "see perl -V for more detail)",
2235 (int)LOCAL_PATCH_COUNT,
2236 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2239 PerlIO_printf(PerlIO_stdout(),
2240 "\n\nCopyright 1987-2000, Larry Wall\n");
2242 PerlIO_printf(PerlIO_stdout(),
2243 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2246 PerlIO_printf(PerlIO_stdout(),
2247 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2248 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2251 PerlIO_printf(PerlIO_stdout(),
2252 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2253 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2256 PerlIO_printf(PerlIO_stdout(),
2257 "atariST series port, ++jrb bammi@cadence.com\n");
2260 PerlIO_printf(PerlIO_stdout(),
2261 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2264 PerlIO_printf(PerlIO_stdout(),
2265 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
2268 PerlIO_printf(PerlIO_stdout(),
2269 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2272 PerlIO_printf(PerlIO_stdout(),
2273 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2276 PerlIO_printf(PerlIO_stdout(),
2277 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2280 PerlIO_printf(PerlIO_stdout(),
2281 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2284 PerlIO_printf(PerlIO_stdout(),
2285 "MiNT port by Guido Flohr, 1997-1999\n");
2288 PerlIO_printf(PerlIO_stdout(),
2289 "EPOC port by Olaf Flebbe, 1999-2000\n");
2291 #ifdef BINARY_BUILD_NOTICE
2292 BINARY_BUILD_NOTICE;
2294 PerlIO_printf(PerlIO_stdout(),
2296 Perl may be copied only under the terms of either the Artistic License or the\n\
2297 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
2298 Complete documentation for Perl, including FAQ lists, should be found on\n\
2299 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2300 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2303 if (! (PL_dowarn & G_WARN_ALL_MASK))
2304 PL_dowarn |= G_WARN_ON;
2308 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2309 PL_compiling.cop_warnings = pWARN_ALL ;
2313 PL_dowarn = G_WARN_ALL_OFF;
2314 PL_compiling.cop_warnings = pWARN_NONE ;
2319 if (s[1] == '-') /* Additional switches on #! line. */
2324 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2330 #ifdef ALTERNATE_SHEBANG
2331 case 'S': /* OS/2 needs -S on "extproc" line. */
2339 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2344 /* compliments of Tom Christiansen */
2346 /* unexec() can be found in the Gnu emacs distribution */
2347 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2350 Perl_my_unexec(pTHX)
2358 prog = newSVpv(BIN_EXP, 0);
2359 sv_catpv(prog, "/perl");
2360 file = newSVpv(PL_origfilename, 0);
2361 sv_catpv(file, ".perldump");
2363 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2364 /* unexec prints msg to stderr in case of failure */
2365 PerlProc_exit(status);
2368 # include <lib$routines.h>
2369 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2371 ABORT(); /* for use with undump */
2376 /* initialize curinterp */
2381 #ifdef PERL_OBJECT /* XXX kludge */
2384 PL_chopset = " \n-"; \
2385 PL_copline = NOLINE; \
2386 PL_curcop = &PL_compiling;\
2387 PL_curcopdb = NULL; \
2389 PL_dumpindent = 4; \
2390 PL_laststatval = -1; \
2391 PL_laststype = OP_STAT; \
2392 PL_maxscream = -1; \
2393 PL_maxsysfd = MAXSYSFD; \
2394 PL_statname = Nullsv; \
2395 PL_tmps_floor = -1; \
2397 PL_op_mask = NULL; \
2398 PL_laststatval = -1; \
2399 PL_laststype = OP_STAT; \
2400 PL_mess_sv = Nullsv; \
2401 PL_splitstr = " "; \
2402 PL_generation = 100; \
2403 PL_exitlist = NULL; \
2404 PL_exitlistlen = 0; \
2406 PL_in_clean_objs = FALSE; \
2407 PL_in_clean_all = FALSE; \
2408 PL_profiledata = NULL; \
2410 PL_rsfp_filters = Nullav; \
2415 # ifdef MULTIPLICITY
2416 # define PERLVAR(var,type)
2417 # define PERLVARA(var,n,type)
2418 # if defined(PERL_IMPLICIT_CONTEXT)
2419 # if defined(USE_THREADS)
2420 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2421 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2422 # else /* !USE_THREADS */
2423 # define PERLVARI(var,type,init) aTHX->var = init;
2424 # define PERLVARIC(var,type,init) aTHX->var = init;
2425 # endif /* USE_THREADS */
2427 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2428 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2430 # include "intrpvar.h"
2431 # ifndef USE_THREADS
2432 # include "thrdvar.h"
2439 # define PERLVAR(var,type)
2440 # define PERLVARA(var,n,type)
2441 # define PERLVARI(var,type,init) PL_##var = init;
2442 # define PERLVARIC(var,type,init) PL_##var = init;
2443 # include "intrpvar.h"
2444 # ifndef USE_THREADS
2445 # include "thrdvar.h"
2457 S_init_main_stash(pTHX)
2462 /* Note that strtab is a rather special HV. Assumptions are made
2463 about not iterating on it, and not adding tie magic to it.
2464 It is properly deallocated in perl_destruct() */
2465 PL_strtab = newHV();
2467 MUTEX_INIT(&PL_strtab_mutex);
2469 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2470 hv_ksplit(PL_strtab, 512);
2472 PL_curstash = PL_defstash = newHV();
2473 PL_curstname = newSVpvn("main",4);
2474 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2475 SvREFCNT_dec(GvHV(gv));
2476 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2478 HvNAME(PL_defstash) = savepv("main");
2479 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2480 GvMULTI_on(PL_incgv);
2481 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2482 GvMULTI_on(PL_hintgv);
2483 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2484 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2485 GvMULTI_on(PL_errgv);
2486 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2487 GvMULTI_on(PL_replgv);
2488 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2489 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2490 sv_setpvn(ERRSV, "", 0);
2491 PL_curstash = PL_defstash;
2492 CopSTASH_set(&PL_compiling, PL_defstash);
2493 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2494 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2495 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2496 /* We must init $/ before switches are processed. */
2497 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2501 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2508 PL_origfilename = savepv("-e");
2511 /* if find_script() returns, it returns a malloc()-ed value */
2512 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2514 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2515 char *s = scriptname + 8;
2516 *fdscript = atoi(s);
2520 scriptname = savepv(s + 1);
2521 Safefree(PL_origfilename);
2522 PL_origfilename = scriptname;
2528 Safefree(CopFILE(PL_curcop));
2530 SvREFCNT_dec(CopFILEGV(PL_curcop));
2532 CopFILE_set(PL_curcop, PL_origfilename);
2533 if (strEQ(PL_origfilename,"-"))
2535 if (*fdscript >= 0) {
2536 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2537 #if defined(HAS_FCNTL) && defined(F_SETFD)
2539 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2542 else if (PL_preprocess) {
2543 char *cpp_cfg = CPPSTDIN;
2544 SV *cpp = newSVpvn("",0);
2545 SV *cmd = NEWSV(0,0);
2547 if (strEQ(cpp_cfg, "cppstdin"))
2548 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2549 sv_catpv(cpp, cpp_cfg);
2551 sv_catpvn(sv, "-I", 2);
2552 sv_catpv(sv,PRIVLIB_EXP);
2554 #if defined(MSDOS) || defined(WIN32)
2555 Perl_sv_setpvf(aTHX_ cmd, "\
2556 sed %s -e \"/^[^#]/b\" \
2557 -e \"/^#[ ]*include[ ]/b\" \
2558 -e \"/^#[ ]*define[ ]/b\" \
2559 -e \"/^#[ ]*if[ ]/b\" \
2560 -e \"/^#[ ]*ifdef[ ]/b\" \
2561 -e \"/^#[ ]*ifndef[ ]/b\" \
2562 -e \"/^#[ ]*else/b\" \
2563 -e \"/^#[ ]*elif[ ]/b\" \
2564 -e \"/^#[ ]*undef[ ]/b\" \
2565 -e \"/^#[ ]*endif/b\" \
2567 %s | %"SVf" -C %"SVf" %s",
2568 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2571 Perl_sv_setpvf(aTHX_ cmd, "\
2572 %s %s -e '/^[^#]/b' \
2573 -e '/^#[ ]*include[ ]/b' \
2574 -e '/^#[ ]*define[ ]/b' \
2575 -e '/^#[ ]*if[ ]/b' \
2576 -e '/^#[ ]*ifdef[ ]/b' \
2577 -e '/^#[ ]*ifndef[ ]/b' \
2578 -e '/^#[ ]*else/b' \
2579 -e '/^#[ ]*elif[ ]/b' \
2580 -e '/^#[ ]*undef[ ]/b' \
2581 -e '/^#[ ]*endif/b' \
2583 %s | %"SVf" %"SVf" %s",
2585 Perl_sv_setpvf(aTHX_ cmd, "\
2586 %s %s -e '/^[^#]/b' \
2587 -e '/^#[ ]*include[ ]/b' \
2588 -e '/^#[ ]*define[ ]/b' \
2589 -e '/^#[ ]*if[ ]/b' \
2590 -e '/^#[ ]*ifdef[ ]/b' \
2591 -e '/^#[ ]*ifndef[ ]/b' \
2592 -e '/^#[ ]*else/b' \
2593 -e '/^#[ ]*elif[ ]/b' \
2594 -e '/^#[ ]*undef[ ]/b' \
2595 -e '/^#[ ]*endif/b' \
2597 %s | %"SVf" -C %"SVf" %s",
2604 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2606 scriptname, cpp, sv, CPPMINUS);
2607 PL_doextract = FALSE;
2608 #ifdef IAMSUID /* actually, this is caught earlier */
2609 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2611 (void)seteuid(PL_uid); /* musn't stay setuid root */
2614 (void)setreuid((Uid_t)-1, PL_uid);
2616 #ifdef HAS_SETRESUID
2617 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2619 PerlProc_setuid(PL_uid);
2623 if (PerlProc_geteuid() != PL_uid)
2624 Perl_croak(aTHX_ "Can't do seteuid!\n");
2626 #endif /* IAMSUID */
2627 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2631 else if (!*scriptname) {
2632 forbid_setid("program input from stdin");
2633 PL_rsfp = PerlIO_stdin();
2636 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2637 #if defined(HAS_FCNTL) && defined(F_SETFD)
2639 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2644 #ifndef IAMSUID /* in case script is not readable before setuid */
2646 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2647 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2650 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2651 (int)PERL_REVISION, (int)PERL_VERSION,
2652 (int)PERL_SUBVERSION), PL_origargv);
2653 Perl_croak(aTHX_ "Can't do setuid\n");
2657 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2658 CopFILE(PL_curcop), Strerror(errno));
2663 * I_SYSSTATVFS HAS_FSTATVFS
2665 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2666 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2667 * here so that metaconfig picks them up. */
2671 S_fd_on_nosuid_fs(pTHX_ int fd)
2673 int check_okay = 0; /* able to do all the required sys/libcalls */
2674 int on_nosuid = 0; /* the fd is on a nosuid fs */
2676 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2677 * fstatvfs() is UNIX98.
2678 * fstatfs() is 4.3 BSD.
2679 * ustat()+getmnt() is pre-4.3 BSD.
2680 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2681 * an irrelevant filesystem while trying to reach the right one.
2684 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2686 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2687 defined(HAS_FSTATVFS)
2688 # define FD_ON_NOSUID_CHECK_OKAY
2689 struct statvfs stfs;
2691 check_okay = fstatvfs(fd, &stfs) == 0;
2692 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2693 # endif /* fstatvfs */
2695 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2696 defined(PERL_MOUNT_NOSUID) && \
2697 defined(HAS_FSTATFS) && \
2698 defined(HAS_STRUCT_STATFS) && \
2699 defined(HAS_STRUCT_STATFS_F_FLAGS)
2700 # define FD_ON_NOSUID_CHECK_OKAY
2703 check_okay = fstatfs(fd, &stfs) == 0;
2704 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2705 # endif /* fstatfs */
2707 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2708 defined(PERL_MOUNT_NOSUID) && \
2709 defined(HAS_FSTAT) && \
2710 defined(HAS_USTAT) && \
2711 defined(HAS_GETMNT) && \
2712 defined(HAS_STRUCT_FS_DATA) && \
2714 # define FD_ON_NOSUID_CHECK_OKAY
2717 if (fstat(fd, &fdst) == 0) {
2719 if (ustat(fdst.st_dev, &us) == 0) {
2721 /* NOSTAT_ONE here because we're not examining fields which
2722 * vary between that case and STAT_ONE. */
2723 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2724 size_t cmplen = sizeof(us.f_fname);
2725 if (sizeof(fsd.fd_req.path) < cmplen)
2726 cmplen = sizeof(fsd.fd_req.path);
2727 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2728 fdst.st_dev == fsd.fd_req.dev) {
2730 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2736 # endif /* fstat+ustat+getmnt */
2738 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2739 defined(HAS_GETMNTENT) && \
2740 defined(HAS_HASMNTOPT) && \
2741 defined(MNTOPT_NOSUID)
2742 # define FD_ON_NOSUID_CHECK_OKAY
2743 FILE *mtab = fopen("/etc/mtab", "r");
2744 struct mntent *entry;
2745 struct stat stb, fsb;
2747 if (mtab && (fstat(fd, &stb) == 0)) {
2748 while (entry = getmntent(mtab)) {
2749 if (stat(entry->mnt_dir, &fsb) == 0
2750 && fsb.st_dev == stb.st_dev)
2752 /* found the filesystem */
2754 if (hasmntopt(entry, MNTOPT_NOSUID))
2757 } /* A single fs may well fail its stat(). */
2762 # endif /* getmntent+hasmntopt */
2765 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2768 #endif /* IAMSUID */
2771 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2777 /* do we need to emulate setuid on scripts? */
2779 /* This code is for those BSD systems that have setuid #! scripts disabled
2780 * in the kernel because of a security problem. Merely defining DOSUID
2781 * in perl will not fix that problem, but if you have disabled setuid
2782 * scripts in the kernel, this will attempt to emulate setuid and setgid
2783 * on scripts that have those now-otherwise-useless bits set. The setuid
2784 * root version must be called suidperl or sperlN.NNN. If regular perl
2785 * discovers that it has opened a setuid script, it calls suidperl with
2786 * the same argv that it had. If suidperl finds that the script it has
2787 * just opened is NOT setuid root, it sets the effective uid back to the
2788 * uid. We don't just make perl setuid root because that loses the
2789 * effective uid we had before invoking perl, if it was different from the
2792 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2793 * be defined in suidperl only. suidperl must be setuid root. The
2794 * Configure script will set this up for you if you want it.
2801 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2802 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2803 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2808 #ifndef HAS_SETREUID
2809 /* On this access check to make sure the directories are readable,
2810 * there is actually a small window that the user could use to make
2811 * filename point to an accessible directory. So there is a faint
2812 * chance that someone could execute a setuid script down in a
2813 * non-accessible directory. I don't know what to do about that.
2814 * But I don't think it's too important. The manual lies when
2815 * it says access() is useful in setuid programs.
2817 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2818 Perl_croak(aTHX_ "Permission denied");
2820 /* If we can swap euid and uid, then we can determine access rights
2821 * with a simple stat of the file, and then compare device and
2822 * inode to make sure we did stat() on the same file we opened.
2823 * Then we just have to make sure he or she can execute it.
2826 struct stat tmpstatbuf;
2830 setreuid(PL_euid,PL_uid) < 0
2833 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2836 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2837 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2838 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2839 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2840 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2841 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2842 Perl_croak(aTHX_ "Permission denied");
2844 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2845 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2846 (void)PerlIO_close(PL_rsfp);
2847 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2848 PerlIO_printf(PL_rsfp,
2849 "User %"Uid_t_f" tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2850 (Filename of set-id script was %s, uid %"Uid_t_f" gid %"Gid_t_f".)\n\nSincerely,\nperl\n",
2851 PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2852 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
2854 PL_statbuf.st_uid, PL_statbuf.st_gid);
2855 (void)PerlProc_pclose(PL_rsfp);
2857 Perl_croak(aTHX_ "Permission denied\n");
2861 setreuid(PL_uid,PL_euid) < 0
2863 # if defined(HAS_SETRESUID)
2864 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2867 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2868 Perl_croak(aTHX_ "Can't reswap uid and euid");
2869 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2870 Perl_croak(aTHX_ "Permission denied\n");
2872 #endif /* HAS_SETREUID */
2873 #endif /* IAMSUID */
2875 if (!S_ISREG(PL_statbuf.st_mode))
2876 Perl_croak(aTHX_ "Permission denied");
2877 if (PL_statbuf.st_mode & S_IWOTH)
2878 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2879 PL_doswitches = FALSE; /* -s is insecure in suid */
2880 CopLINE_inc(PL_curcop);
2881 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2882 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2883 Perl_croak(aTHX_ "No #! line");
2884 s = SvPV(PL_linestr,n_a)+2;
2886 while (!isSPACE(*s)) s++;
2887 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2888 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2889 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2890 Perl_croak(aTHX_ "Not a perl script");
2891 while (*s == ' ' || *s == '\t') s++;
2893 * #! arg must be what we saw above. They can invoke it by
2894 * mentioning suidperl explicitly, but they may not add any strange
2895 * arguments beyond what #! says if they do invoke suidperl that way.
2897 len = strlen(validarg);
2898 if (strEQ(validarg," PHOOEY ") ||
2899 strnNE(s,validarg,len) || !isSPACE(s[len]))
2900 Perl_croak(aTHX_ "Args must match #! line");
2903 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2904 PL_euid == PL_statbuf.st_uid)
2906 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2907 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2908 #endif /* IAMSUID */
2910 if (PL_euid) { /* oops, we're not the setuid root perl */
2911 (void)PerlIO_close(PL_rsfp);
2914 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2915 (int)PERL_REVISION, (int)PERL_VERSION,
2916 (int)PERL_SUBVERSION), PL_origargv);
2918 Perl_croak(aTHX_ "Can't do setuid\n");
2921 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2923 (void)setegid(PL_statbuf.st_gid);
2926 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2928 #ifdef HAS_SETRESGID
2929 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2931 PerlProc_setgid(PL_statbuf.st_gid);
2935 if (PerlProc_getegid() != PL_statbuf.st_gid)
2936 Perl_croak(aTHX_ "Can't do setegid!\n");
2938 if (PL_statbuf.st_mode & S_ISUID) {
2939 if (PL_statbuf.st_uid != PL_euid)
2941 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2944 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2946 #ifdef HAS_SETRESUID
2947 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2949 PerlProc_setuid(PL_statbuf.st_uid);
2953 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2954 Perl_croak(aTHX_ "Can't do seteuid!\n");
2956 else if (PL_uid) { /* oops, mustn't run as root */
2958 (void)seteuid((Uid_t)PL_uid);
2961 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2963 #ifdef HAS_SETRESUID
2964 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2966 PerlProc_setuid((Uid_t)PL_uid);
2970 if (PerlProc_geteuid() != PL_uid)
2971 Perl_croak(aTHX_ "Can't do seteuid!\n");
2974 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2975 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
2978 else if (PL_preprocess)
2979 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
2980 else if (fdscript >= 0)
2981 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
2983 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
2985 /* We absolutely must clear out any saved ids here, so we */
2986 /* exec the real perl, substituting fd script for scriptname. */
2987 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2988 PerlIO_rewind(PL_rsfp);
2989 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2990 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2991 if (!PL_origargv[which])
2992 Perl_croak(aTHX_ "Permission denied");
2993 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
2994 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
2995 #if defined(HAS_FCNTL) && defined(F_SETFD)
2996 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
2998 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
2999 (int)PERL_REVISION, (int)PERL_VERSION,
3000 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3001 Perl_croak(aTHX_ "Can't do setuid\n");
3002 #endif /* IAMSUID */
3004 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3005 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3007 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3008 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3010 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3013 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3014 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3015 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3016 /* not set-id, must be wrapped */
3022 S_find_beginning(pTHX)
3024 register char *s, *s2;
3026 /* skip forward in input to the real script? */
3029 #ifdef MACOS_TRADITIONAL
3030 /* Since the Mac OS does not honor !# arguments for us, we do it ourselves */
3032 while (PL_doextract || gMacPerl_AlwaysExtract) {
3033 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3034 if (!gMacPerl_AlwaysExtract)
3035 Perl_croak(aTHX_ "No Perl script found in input\n");
3037 if (PL_doextract) /* require explicit override ? */
3038 if (!OverrideExtract(PL_origfilename))
3039 Perl_croak(aTHX_ "User aborted script\n");
3041 PL_doextract = FALSE;
3043 /* Pater peccavi, file does not have #! */
3044 PerlIO_rewind(PL_rsfp);
3049 while (PL_doextract) {
3050 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3051 Perl_croak(aTHX_ "No Perl script found in input\n");
3053 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3054 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3055 PL_doextract = FALSE;
3056 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3058 while (*s == ' ' || *s == '\t') s++;
3060 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3061 if (strnEQ(s2-4,"perl",4))
3063 while ((s = moreswitches(s)))
3074 PL_uid = PerlProc_getuid();
3075 PL_euid = PerlProc_geteuid();
3076 PL_gid = PerlProc_getgid();
3077 PL_egid = PerlProc_getegid();
3079 PL_uid |= PL_gid << 16;
3080 PL_euid |= PL_egid << 16;
3082 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3086 S_forbid_setid(pTHX_ char *s)
3088 if (PL_euid != PL_uid)
3089 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3090 if (PL_egid != PL_gid)
3091 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3095 Perl_init_debugger(pTHX)
3098 HV *ostash = PL_curstash;
3100 PL_curstash = PL_debstash;
3101 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3102 AvREAL_off(PL_dbargs);
3103 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3104 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3105 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3106 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3107 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3108 sv_setiv(PL_DBsingle, 0);
3109 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3110 sv_setiv(PL_DBtrace, 0);
3111 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3112 sv_setiv(PL_DBsignal, 0);
3113 PL_curstash = ostash;
3116 #ifndef STRESS_REALLOC
3117 #define REASONABLE(size) (size)
3119 #define REASONABLE(size) (1) /* unreasonable */
3123 Perl_init_stacks(pTHX)
3125 /* start with 128-item stack and 8K cxstack */
3126 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3127 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3128 PL_curstackinfo->si_type = PERLSI_MAIN;
3129 PL_curstack = PL_curstackinfo->si_stack;
3130 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3132 PL_stack_base = AvARRAY(PL_curstack);
3133 PL_stack_sp = PL_stack_base;
3134 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3136 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3139 PL_tmps_max = REASONABLE(128);
3141 New(54,PL_markstack,REASONABLE(32),I32);
3142 PL_markstack_ptr = PL_markstack;
3143 PL_markstack_max = PL_markstack + REASONABLE(32);
3147 New(54,PL_scopestack,REASONABLE(32),I32);
3148 PL_scopestack_ix = 0;
3149 PL_scopestack_max = REASONABLE(32);
3151 New(54,PL_savestack,REASONABLE(128),ANY);
3152 PL_savestack_ix = 0;
3153 PL_savestack_max = REASONABLE(128);
3155 New(54,PL_retstack,REASONABLE(16),OP*);
3157 PL_retstack_max = REASONABLE(16);
3166 while (PL_curstackinfo->si_next)
3167 PL_curstackinfo = PL_curstackinfo->si_next;
3168 while (PL_curstackinfo) {
3169 PERL_SI *p = PL_curstackinfo->si_prev;
3170 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3171 Safefree(PL_curstackinfo->si_cxstack);
3172 Safefree(PL_curstackinfo);
3173 PL_curstackinfo = p;
3175 Safefree(PL_tmps_stack);
3176 Safefree(PL_markstack);
3177 Safefree(PL_scopestack);
3178 Safefree(PL_savestack);
3179 Safefree(PL_retstack);
3183 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3194 lex_start(PL_linestr);
3196 PL_subname = newSVpvn("main",4);
3200 S_init_predump_symbols(pTHX)
3206 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3207 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3208 GvMULTI_on(PL_stdingv);
3209 io = GvIOp(PL_stdingv);
3210 IoIFP(io) = PerlIO_stdin();
3211 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3213 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3215 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3218 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3220 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3222 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3224 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3225 GvMULTI_on(PL_stderrgv);
3226 io = GvIOp(PL_stderrgv);
3227 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3228 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3230 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3232 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3235 Safefree(PL_osname);
3236 PL_osname = savepv(OSNAME);
3240 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3247 argc--,argv++; /* skip name of script */
3248 if (PL_doswitches) {
3249 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3252 if (argv[0][1] == '-' && !argv[0][2]) {
3256 if ((s = strchr(argv[0], '='))) {
3258 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3261 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3264 PL_toptarget = NEWSV(0,0);
3265 sv_upgrade(PL_toptarget, SVt_PVFM);
3266 sv_setpvn(PL_toptarget, "", 0);
3267 PL_bodytarget = NEWSV(0,0);
3268 sv_upgrade(PL_bodytarget, SVt_PVFM);
3269 sv_setpvn(PL_bodytarget, "", 0);
3270 PL_formtarget = PL_bodytarget;
3273 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3274 #ifdef MACOS_TRADITIONAL
3275 /* $0 is not majick on a Mac */
3276 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3278 sv_setpv(GvSV(tmpgv),PL_origfilename);
3279 magicname("0", "0", 1);
3282 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3284 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3286 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3288 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3289 GvMULTI_on(PL_argvgv);
3290 (void)gv_AVadd(PL_argvgv);
3291 av_clear(GvAVn(PL_argvgv));
3292 for (; argc > 0; argc--,argv++) {
3293 SV *sv = newSVpv(argv[0],0);
3294 av_push(GvAVn(PL_argvgv),sv);
3295 if (PL_widesyscalls)
3296 (void)sv_utf8_decode(sv);
3299 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3301 GvMULTI_on(PL_envgv);
3302 hv = GvHVn(PL_envgv);
3303 hv_magic(hv, PL_envgv, 'E');
3304 #if !defined( VMS) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) /* VMS doesn't have environ array */
3305 /* Note that if the supplied env parameter is actually a copy
3306 of the global environ then it may now point to free'd memory
3307 if the environment has been modified since. To avoid this
3308 problem we treat env==NULL as meaning 'use the default'
3313 environ[0] = Nullch;
3314 for (; *env; env++) {
3315 if (!(s = strchr(*env,'=')))
3321 sv = newSVpv(s--,0);
3322 (void)hv_store(hv, *env, s - *env, sv, 0);
3324 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3325 /* Sins of the RTL. See note in my_setenv(). */
3326 (void)PerlEnv_putenv(savepv(*env));
3330 #ifdef DYNAMIC_ENV_FETCH
3331 HvNAME(hv) = savepv(ENV_HV_NAME);
3335 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3336 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3340 S_init_perllib(pTHX)
3345 s = PerlEnv_getenv("PERL5LIB");
3347 incpush(s, TRUE, TRUE);
3349 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3351 /* Treat PERL5?LIB as a possible search list logical name -- the
3352 * "natural" VMS idiom for a Unix path string. We allow each
3353 * element to be a set of |-separated directories for compatibility.
3357 if (my_trnlnm("PERL5LIB",buf,0))
3358 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3360 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3364 /* Use the ~-expanded versions of APPLLIB (undocumented),
3365 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3368 incpush(APPLLIB_EXP, TRUE, TRUE);
3372 incpush(ARCHLIB_EXP, FALSE, FALSE);
3374 #ifdef MACOS_TRADITIONAL
3376 struct stat tmpstatbuf;
3377 SV * privdir = NEWSV(55, 0);
3378 char * macperl = PerlEnv_getenv("MACPERL");
3383 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3384 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3385 incpush(SvPVX(privdir), TRUE, FALSE);
3386 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3387 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3388 incpush(SvPVX(privdir), TRUE, FALSE);
3390 SvREFCNT_dec(privdir);
3393 incpush(":", FALSE, FALSE);
3396 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3399 incpush(PRIVLIB_EXP, TRUE, FALSE);
3401 incpush(PRIVLIB_EXP, FALSE, FALSE);
3405 /* sitearch is always relative to sitelib on Windows for
3406 * DLL-based path intuition to work correctly */
3407 # if !defined(WIN32)
3408 incpush(SITEARCH_EXP, FALSE, FALSE);
3414 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3416 incpush(SITELIB_EXP, FALSE, FALSE);
3420 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3421 incpush(SITELIB_STEM, FALSE, TRUE);
3424 #ifdef PERL_VENDORARCH_EXP
3425 /* vendorarch is always relative to vendorlib on Windows for
3426 * DLL-based path intuition to work correctly */
3427 # if !defined(WIN32)
3428 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3432 #ifdef PERL_VENDORLIB_EXP
3434 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3436 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3440 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3441 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3444 #ifdef PERL_OTHERLIBDIRS
3445 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3449 incpush(".", FALSE, FALSE);
3450 #endif /* MACOS_TRADITIONAL */
3454 # define PERLLIB_SEP ';'
3457 # define PERLLIB_SEP '|'
3459 # if defined(MACOS_TRADITIONAL)
3460 # define PERLLIB_SEP ','
3462 # define PERLLIB_SEP ':'
3466 #ifndef PERLLIB_MANGLE
3467 # define PERLLIB_MANGLE(s,n) (s)
3471 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3473 SV *subdir = Nullsv;
3478 if (addsubdirs || addoldvers) {
3479 subdir = sv_newmortal();
3482 /* Break at all separators */
3484 SV *libdir = NEWSV(55,0);
3487 /* skip any consecutive separators */
3488 while ( *p == PERLLIB_SEP ) {
3489 /* Uncomment the next line for PATH semantics */
3490 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3494 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3495 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3500 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3501 p = Nullch; /* break out */
3503 #ifdef MACOS_TRADITIONAL
3504 if (!strchr(SvPVX(libdir), ':'))
3505 sv_insert(libdir, 0, 0, ":", 1);
3506 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3507 sv_catpv(libdir, ":");
3511 * BEFORE pushing libdir onto @INC we may first push version- and
3512 * archname-specific sub-directories.
3514 if (addsubdirs || addoldvers) {
3515 #ifdef PERL_INC_VERSION_LIST
3516 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3517 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3518 const char **incver;
3520 struct stat tmpstatbuf;
3525 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3527 while (unix[len-1] == '/') len--; /* Cosmetic */
3528 sv_usepvn(libdir,unix,len);
3531 PerlIO_printf(Perl_error_log,
3532 "Failed to unixify @INC element \"%s\"\n",
3536 #ifdef MACOS_TRADITIONAL
3537 #define PERL_AV_SUFFIX_FMT ""
3538 #define PERL_ARCH_FMT ":%s"
3540 #define PERL_AV_SUFFIX_FMT "/"
3541 #define PERL_ARCH_FMT "/%s"
3543 /* .../version/archname if -d .../version/archname */
3544 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT PERL_ARCH_FMT,
3546 (int)PERL_REVISION, (int)PERL_VERSION,
3547 (int)PERL_SUBVERSION, ARCHNAME);
3548 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3549 S_ISDIR(tmpstatbuf.st_mode))
3550 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3552 /* .../version if -d .../version */
3553 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT, libdir,
3554 (int)PERL_REVISION, (int)PERL_VERSION,
3555 (int)PERL_SUBVERSION);
3556 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3557 S_ISDIR(tmpstatbuf.st_mode))
3558 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3560 /* .../archname if -d .../archname */
3561 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3562 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3563 S_ISDIR(tmpstatbuf.st_mode))
3564 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3567 #ifdef PERL_INC_VERSION_LIST
3569 for (incver = incverlist; *incver; incver++) {
3570 /* .../xxx if -d .../xxx */
3571 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3572 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3573 S_ISDIR(tmpstatbuf.st_mode))
3574 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3580 /* finally push this lib directory on the end of @INC */
3581 av_push(GvAVn(PL_incgv), libdir);
3586 STATIC struct perl_thread *
3587 S_init_main_thread(pTHX)
3589 #if !defined(PERL_IMPLICIT_CONTEXT)
3590 struct perl_thread *thr;
3594 Newz(53, thr, 1, struct perl_thread);
3595 PL_curcop = &PL_compiling;
3596 thr->interp = PERL_GET_INTERP;
3597 thr->cvcache = newHV();
3598 thr->threadsv = newAV();
3599 /* thr->threadsvp is set when find_threadsv is called */
3600 thr->specific = newAV();
3601 thr->flags = THRf_R_JOINABLE;
3602 MUTEX_INIT(&thr->mutex);
3603 /* Handcraft thrsv similarly to mess_sv */
3604 New(53, PL_thrsv, 1, SV);
3605 Newz(53, xpv, 1, XPV);
3606 SvFLAGS(PL_thrsv) = SVt_PV;
3607 SvANY(PL_thrsv) = (void*)xpv;
3608 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3609 SvPVX(PL_thrsv) = (char*)thr;
3610 SvCUR_set(PL_thrsv, sizeof(thr));
3611 SvLEN_set(PL_thrsv, sizeof(thr));
3612 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3613 thr->oursv = PL_thrsv;
3614 PL_chopset = " \n-";
3617 MUTEX_LOCK(&PL_threads_mutex);
3622 MUTEX_UNLOCK(&PL_threads_mutex);
3624 #ifdef HAVE_THREAD_INTERN
3625 Perl_init_thread_intern(thr);
3628 #ifdef SET_THREAD_SELF
3629 SET_THREAD_SELF(thr);
3631 thr->self = pthread_self();
3632 #endif /* SET_THREAD_SELF */
3636 * These must come after the SET_THR because sv_setpvn does
3637 * SvTAINT and the taint fields require dTHR.
3639 PL_toptarget = NEWSV(0,0);
3640 sv_upgrade(PL_toptarget, SVt_PVFM);
3641 sv_setpvn(PL_toptarget, "", 0);
3642 PL_bodytarget = NEWSV(0,0);
3643 sv_upgrade(PL_bodytarget, SVt_PVFM);
3644 sv_setpvn(PL_bodytarget, "", 0);
3645 PL_formtarget = PL_bodytarget;
3646 thr->errsv = newSVpvn("", 0);
3647 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3650 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3651 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3652 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3653 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3654 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3656 PL_reginterp_cnt = 0;
3660 #endif /* USE_THREADS */
3663 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3667 line_t oldline = CopLINE(PL_curcop);
3673 while (AvFILL(paramList) >= 0) {
3674 cv = (CV*)av_shift(paramList);
3676 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3677 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3683 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3687 (void)SvPV(atsv, len);
3690 PL_curcop = &PL_compiling;
3691 CopLINE_set(PL_curcop, oldline);
3692 if (paramList == PL_beginav)
3693 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3695 Perl_sv_catpvf(aTHX_ atsv,
3696 "%s failed--call queue aborted",
3697 paramList == PL_checkav ? "CHECK"
3698 : paramList == PL_initav ? "INIT"
3700 while (PL_scopestack_ix > oldscope)
3703 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3710 /* my_exit() was called */
3711 while (PL_scopestack_ix > oldscope)
3714 PL_curstash = PL_defstash;
3715 PL_curcop = &PL_compiling;
3716 CopLINE_set(PL_curcop, oldline);
3718 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3719 if (paramList == PL_beginav)
3720 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3722 Perl_croak(aTHX_ "%s failed--call queue aborted",
3723 paramList == PL_checkav ? "CHECK"
3724 : paramList == PL_initav ? "INIT"
3731 PL_curcop = &PL_compiling;
3732 CopLINE_set(PL_curcop, oldline);
3735 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3743 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3745 S_vcall_list_body(pTHX_ va_list args)
3747 CV *cv = va_arg(args, CV*);
3748 return call_list_body(cv);
3753 S_call_list_body(pTHX_ CV *cv)
3755 PUSHMARK(PL_stack_sp);
3756 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3761 Perl_my_exit(pTHX_ U32 status)
3765 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3766 thr, (unsigned long) status));
3775 STATUS_NATIVE_SET(status);
3782 Perl_my_failure_exit(pTHX)
3785 if (vaxc$errno & 1) {
3786 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3787 STATUS_NATIVE_SET(44);
3790 if (!vaxc$errno && errno) /* unlikely */
3791 STATUS_NATIVE_SET(44);
3793 STATUS_NATIVE_SET(vaxc$errno);
3798 STATUS_POSIX_SET(errno);
3800 exitstatus = STATUS_POSIX >> 8;
3801 if (exitstatus & 255)
3802 STATUS_POSIX_SET(exitstatus);
3804 STATUS_POSIX_SET(255);
3811 S_my_exit_jump(pTHX)
3814 register PERL_CONTEXT *cx;
3819 SvREFCNT_dec(PL_e_script);
3820 PL_e_script = Nullsv;
3823 POPSTACK_TO(PL_mainstack);
3824 if (cxstack_ix >= 0) {
3827 POPBLOCK(cx,PL_curpm);
3839 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3842 p = SvPVX(PL_e_script);
3843 nl = strchr(p, '\n');
3844 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3846 filter_del(read_e_script);
3849 sv_catpvn(buf_sv, p, nl-p);
3850 sv_chop(PL_e_script, nl);