3 * Copyright (c) 1987-2000 Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
15 #define PERL_IN_PERL_C
17 #include "patchlevel.h" /* for local_patches */
19 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
24 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
25 char *getenv (char *); /* Usually in <stdlib.h> */
28 static I32 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen);
36 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
43 #define perl_construct Perl_construct
44 #define perl_parse Perl_parse
45 #define perl_run Perl_run
46 #define perl_destruct Perl_destruct
47 #define perl_free Perl_free
50 #if defined(USE_THREADS)
51 # define INIT_TLS_AND_INTERP \
53 if (!PL_curinterp) { \
54 PERL_SET_INTERP(my_perl); \
60 # if defined(USE_ITHREADS)
61 # define INIT_TLS_AND_INTERP \
63 if (!PL_curinterp) { \
64 PERL_SET_INTERP(my_perl); \
67 PERL_SET_THX(my_perl); \
71 PERL_SET_THX(my_perl); \
75 # define INIT_TLS_AND_INTERP \
77 if (!PL_curinterp) { \
78 PERL_SET_INTERP(my_perl); \
80 PERL_SET_THX(my_perl); \
85 #ifdef PERL_IMPLICIT_SYS
87 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
88 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
89 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
90 struct IPerlDir* ipD, struct IPerlSock* ipS,
91 struct IPerlProc* ipP)
93 PerlInterpreter *my_perl;
95 my_perl = (PerlInterpreter*)new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd,
96 ipLIO, ipD, ipS, ipP);
99 /* New() needs interpreter, so call malloc() instead */
100 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
102 Zero(my_perl, 1, PerlInterpreter);
119 =for apidoc perl_alloc
121 Allocates a new Perl interpreter. See L<perlembed>.
129 PerlInterpreter *my_perl;
131 /* New() needs interpreter, so call malloc() instead */
132 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
135 Zero(my_perl, 1, PerlInterpreter);
138 #endif /* PERL_IMPLICIT_SYS */
141 =for apidoc perl_construct
143 Initializes a new Perl interpreter. See L<perlembed>.
149 perl_construct(pTHXx)
154 struct perl_thread *thr = NULL;
155 #endif /* FAKE_THREADS */
156 #endif /* USE_THREADS */
160 PL_perl_destruct_level = 1;
162 if (PL_perl_destruct_level > 0)
166 /* Init the real globals (and main thread)? */
169 MUTEX_INIT(&PL_sv_mutex);
171 * Safe to use basic SV functions from now on (though
172 * not things like mortals or tainting yet).
174 MUTEX_INIT(&PL_eval_mutex);
175 COND_INIT(&PL_eval_cond);
176 MUTEX_INIT(&PL_threads_mutex);
177 COND_INIT(&PL_nthreads_cond);
178 # ifdef EMULATE_ATOMIC_REFCOUNTS
179 MUTEX_INIT(&PL_svref_mutex);
180 # endif /* EMULATE_ATOMIC_REFCOUNTS */
182 MUTEX_INIT(&PL_cred_mutex);
184 thr = init_main_thread();
185 #endif /* USE_THREADS */
187 #ifdef PERL_FLEXIBLE_EXCEPTIONS
188 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
191 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
193 PL_linestr = NEWSV(65,79);
194 sv_upgrade(PL_linestr,SVt_PVIV);
196 if (!SvREADONLY(&PL_sv_undef)) {
197 /* set read-only and try to insure than we wont see REFCNT==0
200 SvREADONLY_on(&PL_sv_undef);
201 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
203 sv_setpv(&PL_sv_no,PL_No);
205 SvREADONLY_on(&PL_sv_no);
206 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
208 sv_setpv(&PL_sv_yes,PL_Yes);
210 SvREADONLY_on(&PL_sv_yes);
211 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
216 /* PL_sighandlerp = sighandler; */
218 PL_sighandlerp = Perl_sighandler;
220 PL_pidstatus = newHV();
224 * There is no way we can refer to them from Perl so close them to save
225 * space. The other alternative would be to provide STDAUX and STDPRN
228 (void)fclose(stdaux);
229 (void)fclose(stdprn);
233 PL_nrs = newSVpvn("\n", 1);
234 PL_rs = SvREFCNT_inc(PL_nrs);
239 PL_lex_state = LEX_NOTPARSING;
245 SET_NUMERIC_STANDARD();
249 PL_patchlevel = NEWSV(0,4);
250 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
251 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
252 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
253 s = (U8*)SvPVX(PL_patchlevel);
254 s = uv_to_utf8(s, (UV)PERL_REVISION);
255 s = uv_to_utf8(s, (UV)PERL_VERSION);
256 s = uv_to_utf8(s, (UV)PERL_SUBVERSION);
258 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
259 SvPOK_on(PL_patchlevel);
260 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
261 + ((NV)PERL_VERSION / (NV)1000)
262 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
263 + ((NV)PERL_SUBVERSION / (NV)1000000)
266 SvNOK_on(PL_patchlevel); /* dual valued */
267 SvUTF8_on(PL_patchlevel);
268 SvREADONLY_on(PL_patchlevel);
271 #if defined(LOCAL_PATCH_COUNT)
272 PL_localpatches = local_patches; /* For possible -v */
275 #ifdef HAVE_INTERP_INTERN
279 PerlIO_init(); /* Hook to IO system */
281 PL_fdpid = newAV(); /* for remembering popen pids by fd */
282 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
283 PL_errors = newSVpvn("",0);
289 =for apidoc perl_destruct
291 Shuts down a Perl interpreter. See L<perlembed>.
300 int destruct_level; /* 0=none, 1=full, 2=full with checks */
306 #endif /* USE_THREADS */
308 /* wait for all pseudo-forked children to finish */
309 PERL_WAIT_FOR_CHILDREN;
313 /* Pass 1 on any remaining threads: detach joinables, join zombies */
315 MUTEX_LOCK(&PL_threads_mutex);
316 DEBUG_S(PerlIO_printf(Perl_debug_log,
317 "perl_destruct: waiting for %d threads...\n",
319 for (t = thr->next; t != thr; t = t->next) {
320 MUTEX_LOCK(&t->mutex);
321 switch (ThrSTATE(t)) {
324 DEBUG_S(PerlIO_printf(Perl_debug_log,
325 "perl_destruct: joining zombie %p\n", t));
326 ThrSETSTATE(t, THRf_DEAD);
327 MUTEX_UNLOCK(&t->mutex);
330 * The SvREFCNT_dec below may take a long time (e.g. av
331 * may contain an object scalar whose destructor gets
332 * called) so we have to unlock threads_mutex and start
335 MUTEX_UNLOCK(&PL_threads_mutex);
337 SvREFCNT_dec((SV*)av);
338 DEBUG_S(PerlIO_printf(Perl_debug_log,
339 "perl_destruct: joined zombie %p OK\n", t));
341 case THRf_R_JOINABLE:
342 DEBUG_S(PerlIO_printf(Perl_debug_log,
343 "perl_destruct: detaching thread %p\n", t));
344 ThrSETSTATE(t, THRf_R_DETACHED);
346 * We unlock threads_mutex and t->mutex in the opposite order
347 * from which we locked them just so that DETACH won't
348 * deadlock if it panics. It's only a breach of good style
349 * not a bug since they are unlocks not locks.
351 MUTEX_UNLOCK(&PL_threads_mutex);
353 MUTEX_UNLOCK(&t->mutex);
356 DEBUG_S(PerlIO_printf(Perl_debug_log,
357 "perl_destruct: ignoring %p (state %u)\n",
359 MUTEX_UNLOCK(&t->mutex);
360 /* fall through and out */
363 /* We leave the above "Pass 1" loop with threads_mutex still locked */
365 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
366 while (PL_nthreads > 1)
368 DEBUG_S(PerlIO_printf(Perl_debug_log,
369 "perl_destruct: final wait for %d threads\n",
371 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
373 /* At this point, we're the last thread */
374 MUTEX_UNLOCK(&PL_threads_mutex);
375 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
376 MUTEX_DESTROY(&PL_threads_mutex);
377 COND_DESTROY(&PL_nthreads_cond);
378 #endif /* !defined(FAKE_THREADS) */
379 #endif /* USE_THREADS */
381 destruct_level = PL_perl_destruct_level;
385 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
387 if (destruct_level < i)
396 /* We must account for everything. */
398 /* Destroy the main CV and syntax tree */
400 PL_curpad = AvARRAY(PL_comppad);
401 op_free(PL_main_root);
402 PL_main_root = Nullop;
404 PL_curcop = &PL_compiling;
405 PL_main_start = Nullop;
406 SvREFCNT_dec(PL_main_cv);
410 if (PL_sv_objcount) {
412 * Try to destruct global references. We do this first so that the
413 * destructors and destructees still exist. Some sv's might remain.
414 * Non-referenced objects are on their own.
419 /* unhook hooks which will soon be, or use, destroyed data */
420 SvREFCNT_dec(PL_warnhook);
421 PL_warnhook = Nullsv;
422 SvREFCNT_dec(PL_diehook);
425 /* call exit list functions */
426 while (PL_exitlistlen-- > 0)
427 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
429 Safefree(PL_exitlist);
431 if (destruct_level == 0){
433 DEBUG_P(debprofdump());
435 /* The exit() function will do everything that needs doing. */
439 /* loosen bonds of global variables */
442 (void)PerlIO_close(PL_rsfp);
446 /* Filters for program text */
447 SvREFCNT_dec(PL_rsfp_filters);
448 PL_rsfp_filters = Nullav;
451 PL_preprocess = FALSE;
457 PL_doswitches = FALSE;
458 PL_dowarn = G_WARN_OFF;
459 PL_doextract = FALSE;
460 PL_sawampersand = FALSE; /* must save all match strings */
463 Safefree(PL_inplace);
465 SvREFCNT_dec(PL_patchlevel);
468 SvREFCNT_dec(PL_e_script);
469 PL_e_script = Nullsv;
472 /* magical thingies */
474 Safefree(PL_ofs); /* $, */
477 Safefree(PL_ors); /* $\ */
480 SvREFCNT_dec(PL_rs); /* $/ */
483 SvREFCNT_dec(PL_nrs); /* $/ helper */
486 PL_multiline = 0; /* $* */
487 Safefree(PL_osname); /* $^O */
490 SvREFCNT_dec(PL_statname);
491 PL_statname = Nullsv;
494 /* defgv, aka *_ should be taken care of elsewhere */
496 /* clean up after study() */
497 SvREFCNT_dec(PL_lastscream);
498 PL_lastscream = Nullsv;
499 Safefree(PL_screamfirst);
501 Safefree(PL_screamnext);
505 Safefree(PL_efloatbuf);
506 PL_efloatbuf = Nullch;
509 /* startup and shutdown function lists */
510 SvREFCNT_dec(PL_beginav);
511 SvREFCNT_dec(PL_endav);
512 SvREFCNT_dec(PL_checkav);
513 SvREFCNT_dec(PL_initav);
519 /* shortcuts just get cleared */
525 PL_argvoutgv = Nullgv;
527 PL_stderrgv = Nullgv;
528 PL_last_in_gv = Nullgv;
530 PL_debstash = Nullhv;
532 /* reset so print() ends up where we expect */
535 SvREFCNT_dec(PL_argvout_stack);
536 PL_argvout_stack = Nullav;
538 SvREFCNT_dec(PL_modglobal);
539 PL_modglobal = Nullhv;
540 SvREFCNT_dec(PL_preambleav);
541 PL_preambleav = Nullav;
542 SvREFCNT_dec(PL_subname);
544 SvREFCNT_dec(PL_linestr);
546 SvREFCNT_dec(PL_pidstatus);
547 PL_pidstatus = Nullhv;
548 SvREFCNT_dec(PL_toptarget);
549 PL_toptarget = Nullsv;
550 SvREFCNT_dec(PL_bodytarget);
551 PL_bodytarget = Nullsv;
552 PL_formtarget = Nullsv;
554 /* free locale stuff */
555 #ifdef USE_LOCALE_COLLATE
556 Safefree(PL_collation_name);
557 PL_collation_name = Nullch;
560 #ifdef USE_LOCALE_NUMERIC
561 Safefree(PL_numeric_name);
562 PL_numeric_name = Nullch;
565 /* clear utf8 character classes */
566 SvREFCNT_dec(PL_utf8_alnum);
567 SvREFCNT_dec(PL_utf8_alnumc);
568 SvREFCNT_dec(PL_utf8_ascii);
569 SvREFCNT_dec(PL_utf8_alpha);
570 SvREFCNT_dec(PL_utf8_space);
571 SvREFCNT_dec(PL_utf8_cntrl);
572 SvREFCNT_dec(PL_utf8_graph);
573 SvREFCNT_dec(PL_utf8_digit);
574 SvREFCNT_dec(PL_utf8_upper);
575 SvREFCNT_dec(PL_utf8_lower);
576 SvREFCNT_dec(PL_utf8_print);
577 SvREFCNT_dec(PL_utf8_punct);
578 SvREFCNT_dec(PL_utf8_xdigit);
579 SvREFCNT_dec(PL_utf8_mark);
580 SvREFCNT_dec(PL_utf8_toupper);
581 SvREFCNT_dec(PL_utf8_tolower);
582 PL_utf8_alnum = Nullsv;
583 PL_utf8_alnumc = Nullsv;
584 PL_utf8_ascii = Nullsv;
585 PL_utf8_alpha = Nullsv;
586 PL_utf8_space = Nullsv;
587 PL_utf8_cntrl = Nullsv;
588 PL_utf8_graph = Nullsv;
589 PL_utf8_digit = Nullsv;
590 PL_utf8_upper = Nullsv;
591 PL_utf8_lower = Nullsv;
592 PL_utf8_print = Nullsv;
593 PL_utf8_punct = Nullsv;
594 PL_utf8_xdigit = Nullsv;
595 PL_utf8_mark = Nullsv;
596 PL_utf8_toupper = Nullsv;
597 PL_utf8_totitle = Nullsv;
598 PL_utf8_tolower = Nullsv;
600 if (!specialWARN(PL_compiling.cop_warnings))
601 SvREFCNT_dec(PL_compiling.cop_warnings);
602 PL_compiling.cop_warnings = Nullsv;
604 Safefree(CopFILE(&PL_compiling));
605 CopFILE(&PL_compiling) = Nullch;
606 Safefree(CopSTASHPV(&PL_compiling));
608 SvREFCNT_dec(CopFILEGV(&PL_compiling));
609 CopFILEGV(&PL_compiling) = Nullgv;
610 /* cop_stash is not refcounted */
613 /* Prepare to destruct main symbol table. */
618 SvREFCNT_dec(PL_curstname);
619 PL_curstname = Nullsv;
621 /* clear queued errors */
622 SvREFCNT_dec(PL_errors);
626 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
627 if (PL_scopestack_ix != 0)
628 Perl_warner(aTHX_ WARN_INTERNAL,
629 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
630 (long)PL_scopestack_ix);
631 if (PL_savestack_ix != 0)
632 Perl_warner(aTHX_ WARN_INTERNAL,
633 "Unbalanced saves: %ld more saves than restores\n",
634 (long)PL_savestack_ix);
635 if (PL_tmps_floor != -1)
636 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
637 (long)PL_tmps_floor + 1);
638 if (cxstack_ix != -1)
639 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
640 (long)cxstack_ix + 1);
643 /* Now absolutely destruct everything, somehow or other, loops or no. */
645 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
646 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
647 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
648 last_sv_count = PL_sv_count;
651 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
652 SvFLAGS(PL_fdpid) |= SVt_PVAV;
653 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
654 SvFLAGS(PL_strtab) |= SVt_PVHV;
656 AvREAL_off(PL_fdpid); /* no surviving entries */
657 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
660 /* Destruct the global string table. */
662 /* Yell and reset the HeVAL() slots that are still holding refcounts,
663 * so that sv_free() won't fail on them.
671 max = HvMAX(PL_strtab);
672 array = HvARRAY(PL_strtab);
675 if (hent && ckWARN_d(WARN_INTERNAL)) {
676 Perl_warner(aTHX_ WARN_INTERNAL,
677 "Unbalanced string table refcount: (%d) for \"%s\"",
678 HeVAL(hent) - Nullsv, HeKEY(hent));
679 HeVAL(hent) = Nullsv;
689 SvREFCNT_dec(PL_strtab);
691 /* free special SVs */
693 SvREFCNT(&PL_sv_yes) = 0;
694 sv_clear(&PL_sv_yes);
695 SvANY(&PL_sv_yes) = NULL;
696 SvFLAGS(&PL_sv_yes) = 0;
698 SvREFCNT(&PL_sv_no) = 0;
700 SvANY(&PL_sv_no) = NULL;
701 SvFLAGS(&PL_sv_no) = 0;
703 SvREFCNT(&PL_sv_undef) = 0;
704 SvREADONLY_off(&PL_sv_undef);
706 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
707 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
711 /* No SVs have survived, need to clean out */
712 Safefree(PL_origfilename);
713 Safefree(PL_reg_start_tmp);
715 Safefree(PL_reg_curpm);
716 Safefree(PL_reg_poscache);
717 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
718 Safefree(PL_op_mask);
720 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
722 DEBUG_P(debprofdump());
724 MUTEX_DESTROY(&PL_strtab_mutex);
725 MUTEX_DESTROY(&PL_sv_mutex);
726 MUTEX_DESTROY(&PL_eval_mutex);
727 MUTEX_DESTROY(&PL_cred_mutex);
728 COND_DESTROY(&PL_eval_cond);
729 #ifdef EMULATE_ATOMIC_REFCOUNTS
730 MUTEX_DESTROY(&PL_svref_mutex);
731 #endif /* EMULATE_ATOMIC_REFCOUNTS */
733 /* As the penultimate thing, free the non-arena SV for thrsv */
734 Safefree(SvPVX(PL_thrsv));
735 Safefree(SvANY(PL_thrsv));
738 #endif /* USE_THREADS */
740 /* As the absolutely last thing, free the non-arena SV for mess() */
743 /* it could have accumulated taint magic */
744 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
747 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
748 moremagic = mg->mg_moremagic;
749 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
750 Safefree(mg->mg_ptr);
754 /* we know that type >= SVt_PV */
755 (void)SvOOK_off(PL_mess_sv);
756 Safefree(SvPVX(PL_mess_sv));
757 Safefree(SvANY(PL_mess_sv));
758 Safefree(PL_mess_sv);
764 =for apidoc perl_free
766 Releases a Perl interpreter. See L<perlembed>.
774 #if defined(PERL_OBJECT)
777 # if defined(PERL_IMPLICIT_SYS) && defined(WIN32)
778 void *host = w32_internal_host;
780 win32_delete_internal_host(host);
788 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
790 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
791 PL_exitlist[PL_exitlistlen].fn = fn;
792 PL_exitlist[PL_exitlistlen].ptr = ptr;
797 =for apidoc perl_parse
799 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
805 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
815 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
818 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
819 setuid perl scripts securely.\n");
823 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
824 _dyld_lookup_and_bind
825 ("__environ", (unsigned long *) &environ_pointer, NULL);
830 #ifndef VMS /* VMS doesn't have environ array */
831 PL_origenviron = environ;
836 /* Come here if running an undumped a.out. */
838 PL_origfilename = savepv(argv[0]);
839 PL_do_undump = FALSE;
840 cxstack_ix = -1; /* start label stack again */
842 init_postdump_symbols(argc,argv,env);
847 PL_curpad = AvARRAY(PL_comppad);
848 op_free(PL_main_root);
849 PL_main_root = Nullop;
851 PL_main_start = Nullop;
852 SvREFCNT_dec(PL_main_cv);
856 oldscope = PL_scopestack_ix;
857 PL_dowarn = G_WARN_OFF;
859 #ifdef PERL_FLEXIBLE_EXCEPTIONS
860 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
866 #ifndef PERL_FLEXIBLE_EXCEPTIONS
867 parse_body(env,xsinit);
870 call_list(oldscope, PL_checkav);
877 /* my_exit() was called */
878 while (PL_scopestack_ix > oldscope)
881 PL_curstash = PL_defstash;
883 call_list(oldscope, PL_checkav);
884 ret = STATUS_NATIVE_EXPORT;
887 PerlIO_printf(Perl_error_log, "panic: top_env\n");
895 #ifdef PERL_FLEXIBLE_EXCEPTIONS
897 S_vparse_body(pTHX_ va_list args)
899 char **env = va_arg(args, char**);
900 XSINIT_t xsinit = va_arg(args, XSINIT_t);
902 return parse_body(env, xsinit);
907 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
910 int argc = PL_origargc;
911 char **argv = PL_origargv;
912 char *scriptname = NULL;
914 VOL bool dosearch = FALSE;
919 char *cddir = Nullch;
921 sv_setpvn(PL_linestr,"",0);
922 sv = newSVpvn("",0); /* first used for -I flags */
926 for (argc--,argv++; argc > 0; argc--,argv++) {
927 if (argv[0][0] != '-' || !argv[0][1])
931 validarg = " PHOOEY ";
940 win32_argv2utf8(argc-1, argv+1);
943 #ifndef PERL_STRICT_CR
967 if ((s = moreswitches(s)))
977 #ifdef MACOS_TRADITIONAL
978 /* ignore -e for Dev:Pseudo argument */
979 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
982 if (PL_euid != PL_uid || PL_egid != PL_gid)
983 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
985 PL_e_script = newSVpvn("",0);
986 filter_add(read_e_script, NULL);
989 sv_catpv(PL_e_script, s);
991 sv_catpv(PL_e_script, argv[1]);
995 Perl_croak(aTHX_ "No code specified for -e");
996 sv_catpv(PL_e_script, "\n");
999 case 'I': /* -I handled both here and in moreswitches() */
1001 if (!*++s && (s=argv[1]) != Nullch) {
1006 STRLEN len = strlen(s);
1007 p = savepvn(s, len);
1008 incpush(p, TRUE, TRUE);
1009 sv_catpvn(sv, "-I", 2);
1010 sv_catpvn(sv, p, len);
1011 sv_catpvn(sv, " ", 1);
1015 Perl_croak(aTHX_ "No directory specified for -I");
1019 PL_preprocess = TRUE;
1029 PL_preambleav = newAV();
1030 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1032 PL_Sv = newSVpv("print myconfig();",0);
1034 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1036 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1038 sv_catpv(PL_Sv,"\" Compile-time options:");
1040 sv_catpv(PL_Sv," DEBUGGING");
1042 # ifdef MULTIPLICITY
1043 sv_catpv(PL_Sv," MULTIPLICITY");
1046 sv_catpv(PL_Sv," USE_THREADS");
1048 # ifdef USE_ITHREADS
1049 sv_catpv(PL_Sv," USE_ITHREADS");
1051 # ifdef USE_64_BIT_INT
1052 sv_catpv(PL_Sv," USE_64_BIT_INT");
1054 # ifdef USE_64_BIT_ALL
1055 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1057 # ifdef USE_LONG_DOUBLE
1058 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1060 # ifdef USE_LARGE_FILES
1061 sv_catpv(PL_Sv," USE_LARGE_FILES");
1064 sv_catpv(PL_Sv," USE_SOCKS");
1067 sv_catpv(PL_Sv," PERL_OBJECT");
1069 # ifdef PERL_IMPLICIT_CONTEXT
1070 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1072 # ifdef PERL_IMPLICIT_SYS
1073 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1075 sv_catpv(PL_Sv,"\\n\",");
1077 #if defined(LOCAL_PATCH_COUNT)
1078 if (LOCAL_PATCH_COUNT > 0) {
1080 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1081 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1082 if (PL_localpatches[i])
1083 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1087 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1090 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1092 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1095 sv_catpv(PL_Sv, "; \
1097 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1098 print \" \\%ENV:\\n @env\\n\" if @env; \
1099 print \" \\@INC:\\n @INC\\n\";");
1102 PL_Sv = newSVpv("config_vars(qw(",0);
1103 sv_catpv(PL_Sv, ++s);
1104 sv_catpv(PL_Sv, "))");
1107 av_push(PL_preambleav, PL_Sv);
1108 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1111 PL_doextract = TRUE;
1119 if (!*++s || isSPACE(*s)) {
1123 /* catch use of gnu style long options */
1124 if (strEQ(s, "version")) {
1128 if (strEQ(s, "help")) {
1135 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1141 #ifndef SECURE_INTERNAL_GETENV
1144 (s = PerlEnv_getenv("PERL5OPT")))
1148 if (*s == '-' && *(s+1) == 'T')
1161 if (!strchr("DIMUdmw", *s))
1162 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1163 s = moreswitches(s);
1169 scriptname = argv[0];
1172 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1174 else if (scriptname == Nullch) {
1176 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1184 open_script(scriptname,dosearch,sv,&fdscript);
1186 validate_suid(validarg, scriptname,fdscript);
1188 #if defined(SIGCHLD) || defined(SIGCLD)
1191 # define SIGCHLD SIGCLD
1193 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1194 if (sigstate == SIG_IGN) {
1195 if (ckWARN(WARN_SIGNAL))
1196 Perl_warner(aTHX_ WARN_SIGNAL,
1197 "Can't ignore signal CHLD, forcing to default");
1198 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1203 #ifdef MACOS_TRADITIONAL
1204 if (PL_doextract || gMacPerl_AlwaysExtract) {
1209 if (cddir && PerlDir_chdir(cddir) < 0)
1210 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1214 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1215 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1216 CvUNIQUE_on(PL_compcv);
1218 PL_comppad = newAV();
1219 av_push(PL_comppad, Nullsv);
1220 PL_curpad = AvARRAY(PL_comppad);
1221 PL_comppad_name = newAV();
1222 PL_comppad_name_fill = 0;
1223 PL_min_intro_pending = 0;
1226 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1227 PL_curpad[0] = (SV*)newAV();
1228 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1229 CvOWNER(PL_compcv) = 0;
1230 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1231 MUTEX_INIT(CvMUTEXP(PL_compcv));
1232 #endif /* USE_THREADS */
1234 comppadlist = newAV();
1235 AvREAL_off(comppadlist);
1236 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1237 av_store(comppadlist, 1, (SV*)PL_comppad);
1238 CvPADLIST(PL_compcv) = comppadlist;
1240 boot_core_UNIVERSAL();
1242 boot_core_xsutils();
1246 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1247 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__)
1255 init_predump_symbols();
1256 /* init_postdump_symbols not currently designed to be called */
1257 /* more than once (ENV isn't cleared first, for example) */
1258 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1260 init_postdump_symbols(argc,argv,env);
1264 /* now parse the script */
1266 SETERRNO(0,SS$_NORMAL);
1268 #ifdef MACOS_TRADITIONAL
1269 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1271 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1273 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1274 MacPerl_MPWFileName(PL_origfilename));
1278 if (yyparse() || PL_error_count) {
1280 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1282 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1287 CopLINE_set(PL_curcop, 0);
1288 PL_curstash = PL_defstash;
1289 PL_preprocess = FALSE;
1291 SvREFCNT_dec(PL_e_script);
1292 PL_e_script = Nullsv;
1295 /* now that script is parsed, we can modify record separator */
1296 SvREFCNT_dec(PL_rs);
1297 PL_rs = SvREFCNT_inc(PL_nrs);
1298 sv_setsv(get_sv("/", TRUE), PL_rs);
1303 SAVECOPFILE(PL_curcop);
1304 SAVECOPLINE(PL_curcop);
1305 gv_check(PL_defstash);
1312 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1313 dump_mstats("after compilation:");
1322 =for apidoc perl_run
1324 Tells a Perl interpreter to run. See L<perlembed>.
1340 oldscope = PL_scopestack_ix;
1342 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1344 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1350 cxstack_ix = -1; /* start context stack again */
1352 case 0: /* normal completion */
1353 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1358 case 2: /* my_exit() */
1359 while (PL_scopestack_ix > oldscope)
1362 PL_curstash = PL_defstash;
1363 if (PL_endav && !PL_minus_c)
1364 call_list(oldscope, PL_endav);
1366 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1367 dump_mstats("after execution: ");
1369 ret = STATUS_NATIVE_EXPORT;
1373 POPSTACK_TO(PL_mainstack);
1376 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1386 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1388 S_vrun_body(pTHX_ va_list args)
1390 I32 oldscope = va_arg(args, I32);
1392 return run_body(oldscope);
1398 S_run_body(pTHX_ I32 oldscope)
1402 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1403 PL_sawampersand ? "Enabling" : "Omitting"));
1405 if (!PL_restartop) {
1406 DEBUG_x(dump_all());
1407 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1408 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1412 #ifdef MACOS_TRADITIONAL
1413 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1415 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1419 if (PERLDB_SINGLE && PL_DBsingle)
1420 sv_setiv(PL_DBsingle, 1);
1422 call_list(oldscope, PL_initav);
1428 PL_op = PL_restartop;
1432 else if (PL_main_start) {
1433 CvDEPTH(PL_main_cv) = 1;
1434 PL_op = PL_main_start;
1444 =for apidoc p||get_sv
1446 Returns the SV of the specified Perl scalar. If C<create> is set and the
1447 Perl variable does not exist then it will be created. If C<create> is not
1448 set and the variable does not exist then NULL is returned.
1454 Perl_get_sv(pTHX_ const char *name, I32 create)
1458 if (name[1] == '\0' && !isALPHA(name[0])) {
1459 PADOFFSET tmp = find_threadsv(name);
1460 if (tmp != NOT_IN_PAD) {
1462 return THREADSV(tmp);
1465 #endif /* USE_THREADS */
1466 gv = gv_fetchpv(name, create, SVt_PV);
1473 =for apidoc p||get_av
1475 Returns the AV of the specified Perl array. If C<create> is set and the
1476 Perl variable does not exist then it will be created. If C<create> is not
1477 set and the variable does not exist then NULL is returned.
1483 Perl_get_av(pTHX_ const char *name, I32 create)
1485 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1494 =for apidoc p||get_hv
1496 Returns the HV of the specified Perl hash. If C<create> is set and the
1497 Perl variable does not exist then it will be created. If C<create> is not
1498 set and the variable does not exist then NULL is returned.
1504 Perl_get_hv(pTHX_ const char *name, I32 create)
1506 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1515 =for apidoc p||get_cv
1517 Returns the CV of the specified Perl subroutine. If C<create> is set and
1518 the Perl subroutine does not exist then it will be declared (which has the
1519 same effect as saying C<sub name;>). If C<create> is not set and the
1520 subroutine does not exist then NULL is returned.
1526 Perl_get_cv(pTHX_ const char *name, I32 create)
1528 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1529 /* XXX unsafe for threads if eval_owner isn't held */
1530 /* XXX this is probably not what they think they're getting.
1531 * It has the same effect as "sub name;", i.e. just a forward
1533 if (create && !GvCVu(gv))
1534 return newSUB(start_subparse(FALSE, 0),
1535 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1543 /* Be sure to refetch the stack pointer after calling these routines. */
1546 =for apidoc p||call_argv
1548 Performs a callback to the specified Perl sub. See L<perlcall>.
1554 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1556 /* See G_* flags in cop.h */
1557 /* null terminated arg list */
1564 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1569 return call_pv(sub_name, flags);
1573 =for apidoc p||call_pv
1575 Performs a callback to the specified Perl sub. See L<perlcall>.
1581 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1582 /* name of the subroutine */
1583 /* See G_* flags in cop.h */
1585 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1589 =for apidoc p||call_method
1591 Performs a callback to the specified Perl method. The blessed object must
1592 be on the stack. See L<perlcall>.
1598 Perl_call_method(pTHX_ const char *methname, I32 flags)
1599 /* name of the subroutine */
1600 /* See G_* flags in cop.h */
1602 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1605 /* May be called with any of a CV, a GV, or an SV containing the name. */
1607 =for apidoc p||call_sv
1609 Performs a callback to the Perl sub whose name is in the SV. See
1616 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1617 /* See G_* flags in cop.h */
1620 LOGOP myop; /* fake syntax tree node */
1625 bool oldcatch = CATCH_GET;
1630 if (flags & G_DISCARD) {
1635 Zero(&myop, 1, LOGOP);
1636 myop.op_next = Nullop;
1637 if (!(flags & G_NOARGS))
1638 myop.op_flags |= OPf_STACKED;
1639 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1640 (flags & G_ARRAY) ? OPf_WANT_LIST :
1645 EXTEND(PL_stack_sp, 1);
1646 *++PL_stack_sp = sv;
1648 oldscope = PL_scopestack_ix;
1650 if (PERLDB_SUB && PL_curstash != PL_debstash
1651 /* Handle first BEGIN of -d. */
1652 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1653 /* Try harder, since this may have been a sighandler, thus
1654 * curstash may be meaningless. */
1655 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1656 && !(flags & G_NODEBUG))
1657 PL_op->op_private |= OPpENTERSUB_DB;
1659 if (flags & G_METHOD) {
1660 Zero(&method_op, 1, UNOP);
1661 method_op.op_next = PL_op;
1662 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1663 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1664 PL_op = (OP*)&method_op;
1667 if (!(flags & G_EVAL)) {
1669 call_body((OP*)&myop, FALSE);
1670 retval = PL_stack_sp - (PL_stack_base + oldmark);
1671 CATCH_SET(oldcatch);
1674 myop.op_other = (OP*)&myop;
1676 /* we're trying to emulate pp_entertry() here */
1678 register PERL_CONTEXT *cx;
1679 I32 gimme = GIMME_V;
1684 push_return(Nullop);
1685 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1687 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1689 PL_in_eval = EVAL_INEVAL;
1690 if (flags & G_KEEPERR)
1691 PL_in_eval |= EVAL_KEEPERR;
1697 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1699 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1706 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1708 call_body((OP*)&myop, FALSE);
1710 retval = PL_stack_sp - (PL_stack_base + oldmark);
1711 if (!(flags & G_KEEPERR))
1718 /* my_exit() was called */
1719 PL_curstash = PL_defstash;
1722 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1723 Perl_croak(aTHX_ "Callback called exit");
1728 PL_op = PL_restartop;
1732 PL_stack_sp = PL_stack_base + oldmark;
1733 if (flags & G_ARRAY)
1737 *++PL_stack_sp = &PL_sv_undef;
1742 if (PL_scopestack_ix > oldscope) {
1746 register PERL_CONTEXT *cx;
1758 if (flags & G_DISCARD) {
1759 PL_stack_sp = PL_stack_base + oldmark;
1768 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1770 S_vcall_body(pTHX_ va_list args)
1772 OP *myop = va_arg(args, OP*);
1773 int is_eval = va_arg(args, int);
1775 call_body(myop, is_eval);
1781 S_call_body(pTHX_ OP *myop, int is_eval)
1785 if (PL_op == myop) {
1787 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1789 PL_op = Perl_pp_entersub(aTHX); /* this does */
1795 /* Eval a string. The G_EVAL flag is always assumed. */
1798 =for apidoc p||eval_sv
1800 Tells Perl to C<eval> the string in the SV.
1806 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1808 /* See G_* flags in cop.h */
1811 UNOP myop; /* fake syntax tree node */
1812 I32 oldmark = SP - PL_stack_base;
1819 if (flags & G_DISCARD) {
1826 Zero(PL_op, 1, UNOP);
1827 EXTEND(PL_stack_sp, 1);
1828 *++PL_stack_sp = sv;
1829 oldscope = PL_scopestack_ix;
1831 if (!(flags & G_NOARGS))
1832 myop.op_flags = OPf_STACKED;
1833 myop.op_next = Nullop;
1834 myop.op_type = OP_ENTEREVAL;
1835 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1836 (flags & G_ARRAY) ? OPf_WANT_LIST :
1838 if (flags & G_KEEPERR)
1839 myop.op_flags |= OPf_SPECIAL;
1841 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1843 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1850 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1852 call_body((OP*)&myop,TRUE);
1854 retval = PL_stack_sp - (PL_stack_base + oldmark);
1855 if (!(flags & G_KEEPERR))
1862 /* my_exit() was called */
1863 PL_curstash = PL_defstash;
1866 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1867 Perl_croak(aTHX_ "Callback called exit");
1872 PL_op = PL_restartop;
1876 PL_stack_sp = PL_stack_base + oldmark;
1877 if (flags & G_ARRAY)
1881 *++PL_stack_sp = &PL_sv_undef;
1887 if (flags & G_DISCARD) {
1888 PL_stack_sp = PL_stack_base + oldmark;
1898 =for apidoc p||eval_pv
1900 Tells Perl to C<eval> the given string and return an SV* result.
1906 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1909 SV* sv = newSVpv(p, 0);
1911 eval_sv(sv, G_SCALAR);
1918 if (croak_on_error && SvTRUE(ERRSV)) {
1920 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1926 /* Require a module. */
1929 =for apidoc p||require_pv
1931 Tells Perl to C<require> a module.
1937 Perl_require_pv(pTHX_ const char *pv)
1941 PUSHSTACKi(PERLSI_REQUIRE);
1943 sv = sv_newmortal();
1944 sv_setpv(sv, "require '");
1947 eval_sv(sv, G_DISCARD);
1953 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
1957 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
1958 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1962 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
1964 /* This message really ought to be max 23 lines.
1965 * Removed -h because the user already knows that opton. Others? */
1967 static char *usage_msg[] = {
1968 "-0[octal] specify record separator (\\0, if no argument)",
1969 "-a autosplit mode with -n or -p (splits $_ into @F)",
1970 "-C enable native wide character system interfaces",
1971 "-c check syntax only (runs BEGIN and CHECK blocks)",
1972 "-d[:debugger] run program under debugger",
1973 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1974 "-e 'command' one line of program (several -e's allowed, omit programfile)",
1975 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
1976 "-i[extension] edit <> files in place (makes backup if extension supplied)",
1977 "-Idirectory specify @INC/#include directory (several -I's allowed)",
1978 "-l[octal] enable line ending processing, specifies line terminator",
1979 "-[mM][-]module execute `use/no module...' before executing program",
1980 "-n assume 'while (<>) { ... }' loop around program",
1981 "-p assume loop like -n but print line also, like sed",
1982 "-P run program through C preprocessor before compilation",
1983 "-s enable rudimentary parsing for switches after programfile",
1984 "-S look for programfile using PATH environment variable",
1985 "-T enable tainting checks",
1986 "-u dump core after parsing program",
1987 "-U allow unsafe operations",
1988 "-v print version, subversion (includes VERY IMPORTANT perl info)",
1989 "-V[:variable] print configuration summary (or a single Config.pm variable)",
1990 "-w enable many useful warnings (RECOMMENDED)",
1991 "-W enable all warnings",
1992 "-X disable all warnings",
1993 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
1997 char **p = usage_msg;
1999 PerlIO_printf(PerlIO_stdout(),
2000 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2003 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2006 /* This routine handles any switches that can be given during run */
2009 Perl_moreswitches(pTHX_ char *s)
2018 numlen = 0; /* disallow underscores */
2019 rschar = (U32)scan_oct(s, 4, &numlen);
2020 SvREFCNT_dec(PL_nrs);
2021 if (rschar & ~((U8)~0))
2022 PL_nrs = &PL_sv_undef;
2023 else if (!rschar && numlen >= 2)
2024 PL_nrs = newSVpvn("", 0);
2027 PL_nrs = newSVpvn(&ch, 1);
2032 PL_widesyscalls = TRUE;
2037 PL_splitstr = savepv(s + 1);
2051 if (*s == ':' || *s == '=') {
2052 my_setenv("PERL5DB", Perl_form(aTHX_ "use Devel::%s;", ++s));
2056 PL_perldb = PERLDB_ALL;
2064 if (isALPHA(s[1])) {
2065 static char debopts[] = "psltocPmfrxuLHXDS";
2068 for (s++; *s && (d = strchr(debopts,*s)); s++)
2069 PL_debug |= 1 << (d - debopts);
2072 PL_debug = atoi(s+1);
2073 for (s++; isDIGIT(*s); s++) ;
2075 PL_debug |= 0x80000000;
2078 if (ckWARN_d(WARN_DEBUGGING))
2079 Perl_warner(aTHX_ WARN_DEBUGGING,
2080 "Recompile perl with -DDEBUGGING to use -D switch\n");
2081 for (s++; isALNUM(*s); s++) ;
2087 usage(PL_origargv[0]);
2091 Safefree(PL_inplace);
2092 PL_inplace = savepv(s+1);
2094 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2097 if (*s == '-') /* Additional switches on #! line. */
2101 case 'I': /* -I handled both here and in parse_perl() */
2104 while (*s && isSPACE(*s))
2109 /* ignore trailing spaces (possibly followed by other switches) */
2111 for (e = p; *e && !isSPACE(*e); e++) ;
2115 } while (*p && *p != '-');
2116 e = savepvn(s, e-s);
2117 incpush(e, TRUE, TRUE);
2124 Perl_croak(aTHX_ "No directory specified for -I");
2132 PL_ors = savepv("\n");
2134 numlen = 0; /* disallow underscores */
2135 *PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2140 if (RsPARA(PL_nrs)) {
2145 PL_ors = SvPV(PL_nrs, PL_orslen);
2146 PL_ors = savepvn(PL_ors, PL_orslen);
2150 forbid_setid("-M"); /* XXX ? */
2153 forbid_setid("-m"); /* XXX ? */
2158 /* -M-foo == 'no foo' */
2159 if (*s == '-') { use = "no "; ++s; }
2160 sv = newSVpv(use,0);
2162 /* We allow -M'Module qw(Foo Bar)' */
2163 while(isALNUM(*s) || *s==':') ++s;
2165 sv_catpv(sv, start);
2166 if (*(start-1) == 'm') {
2168 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2169 sv_catpv( sv, " ()");
2173 Perl_croak(aTHX_ "Module name required with -%c option",
2175 sv_catpvn(sv, start, s-start);
2176 sv_catpv(sv, " split(/,/,q{");
2182 PL_preambleav = newAV();
2183 av_push(PL_preambleav, sv);
2186 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2198 PL_doswitches = TRUE;
2203 Perl_croak(aTHX_ "Too late for \"-T\" option");
2207 #ifdef MACOS_TRADITIONAL
2208 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2210 PL_do_undump = TRUE;
2218 PerlIO_printf(PerlIO_stdout(),
2219 Perl_form(aTHX_ "\nThis is perl, v%vd built for %s",
2220 PL_patchlevel, ARCHNAME));
2221 #if defined(LOCAL_PATCH_COUNT)
2222 if (LOCAL_PATCH_COUNT > 0)
2223 PerlIO_printf(PerlIO_stdout(),
2224 "\n(with %d registered patch%s, "
2225 "see perl -V for more detail)",
2226 (int)LOCAL_PATCH_COUNT,
2227 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2230 PerlIO_printf(PerlIO_stdout(),
2231 "\n\nCopyright 1987-2000, Larry Wall\n");
2233 PerlIO_printf(PerlIO_stdout(),
2234 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2237 PerlIO_printf(PerlIO_stdout(),
2238 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2239 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2242 PerlIO_printf(PerlIO_stdout(),
2243 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2244 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2247 PerlIO_printf(PerlIO_stdout(),
2248 "atariST series port, ++jrb bammi@cadence.com\n");
2251 PerlIO_printf(PerlIO_stdout(),
2252 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2255 PerlIO_printf(PerlIO_stdout(),
2256 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
2259 PerlIO_printf(PerlIO_stdout(),
2260 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2263 PerlIO_printf(PerlIO_stdout(),
2264 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2267 PerlIO_printf(PerlIO_stdout(),
2268 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2271 PerlIO_printf(PerlIO_stdout(),
2272 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2275 PerlIO_printf(PerlIO_stdout(),
2276 "MiNT port by Guido Flohr, 1997-1999\n");
2279 PerlIO_printf(PerlIO_stdout(),
2280 "EPOC port by Olaf Flebbe, 1999-2000\n");
2282 #ifdef BINARY_BUILD_NOTICE
2283 BINARY_BUILD_NOTICE;
2285 PerlIO_printf(PerlIO_stdout(),
2287 Perl may be copied only under the terms of either the Artistic License or the\n\
2288 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
2289 Complete documentation for Perl, including FAQ lists, should be found on\n\
2290 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2291 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2294 if (! (PL_dowarn & G_WARN_ALL_MASK))
2295 PL_dowarn |= G_WARN_ON;
2299 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2300 PL_compiling.cop_warnings = pWARN_ALL ;
2304 PL_dowarn = G_WARN_ALL_OFF;
2305 PL_compiling.cop_warnings = pWARN_NONE ;
2310 if (s[1] == '-') /* Additional switches on #! line. */
2315 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2321 #ifdef ALTERNATE_SHEBANG
2322 case 'S': /* OS/2 needs -S on "extproc" line. */
2330 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2335 /* compliments of Tom Christiansen */
2337 /* unexec() can be found in the Gnu emacs distribution */
2338 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2341 Perl_my_unexec(pTHX)
2349 prog = newSVpv(BIN_EXP, 0);
2350 sv_catpv(prog, "/perl");
2351 file = newSVpv(PL_origfilename, 0);
2352 sv_catpv(file, ".perldump");
2354 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2355 /* unexec prints msg to stderr in case of failure */
2356 PerlProc_exit(status);
2359 # include <lib$routines.h>
2360 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2362 ABORT(); /* for use with undump */
2367 /* initialize curinterp */
2372 #ifdef PERL_OBJECT /* XXX kludge */
2375 PL_chopset = " \n-"; \
2376 PL_copline = NOLINE; \
2377 PL_curcop = &PL_compiling;\
2378 PL_curcopdb = NULL; \
2380 PL_dumpindent = 4; \
2381 PL_laststatval = -1; \
2382 PL_laststype = OP_STAT; \
2383 PL_maxscream = -1; \
2384 PL_maxsysfd = MAXSYSFD; \
2385 PL_statname = Nullsv; \
2386 PL_tmps_floor = -1; \
2388 PL_op_mask = NULL; \
2389 PL_laststatval = -1; \
2390 PL_laststype = OP_STAT; \
2391 PL_mess_sv = Nullsv; \
2392 PL_splitstr = " "; \
2393 PL_generation = 100; \
2394 PL_exitlist = NULL; \
2395 PL_exitlistlen = 0; \
2397 PL_in_clean_objs = FALSE; \
2398 PL_in_clean_all = FALSE; \
2399 PL_profiledata = NULL; \
2401 PL_rsfp_filters = Nullav; \
2406 # ifdef MULTIPLICITY
2407 # define PERLVAR(var,type)
2408 # define PERLVARA(var,n,type)
2409 # if defined(PERL_IMPLICIT_CONTEXT)
2410 # if defined(USE_THREADS)
2411 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2412 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2413 # else /* !USE_THREADS */
2414 # define PERLVARI(var,type,init) aTHX->var = init;
2415 # define PERLVARIC(var,type,init) aTHX->var = init;
2416 # endif /* USE_THREADS */
2418 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2419 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2421 # include "intrpvar.h"
2422 # ifndef USE_THREADS
2423 # include "thrdvar.h"
2430 # define PERLVAR(var,type)
2431 # define PERLVARA(var,n,type)
2432 # define PERLVARI(var,type,init) PL_##var = init;
2433 # define PERLVARIC(var,type,init) PL_##var = init;
2434 # include "intrpvar.h"
2435 # ifndef USE_THREADS
2436 # include "thrdvar.h"
2448 S_init_main_stash(pTHX)
2453 /* Note that strtab is a rather special HV. Assumptions are made
2454 about not iterating on it, and not adding tie magic to it.
2455 It is properly deallocated in perl_destruct() */
2456 PL_strtab = newHV();
2458 MUTEX_INIT(&PL_strtab_mutex);
2460 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2461 hv_ksplit(PL_strtab, 512);
2463 PL_curstash = PL_defstash = newHV();
2464 PL_curstname = newSVpvn("main",4);
2465 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2466 SvREFCNT_dec(GvHV(gv));
2467 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2469 HvNAME(PL_defstash) = savepv("main");
2470 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2471 GvMULTI_on(PL_incgv);
2472 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2473 GvMULTI_on(PL_hintgv);
2474 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2475 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2476 GvMULTI_on(PL_errgv);
2477 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2478 GvMULTI_on(PL_replgv);
2479 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2480 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2481 sv_setpvn(ERRSV, "", 0);
2482 PL_curstash = PL_defstash;
2483 CopSTASH_set(&PL_compiling, PL_defstash);
2484 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2485 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2486 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2487 /* We must init $/ before switches are processed. */
2488 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2492 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2499 PL_origfilename = savepv("-e");
2502 /* if find_script() returns, it returns a malloc()-ed value */
2503 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2505 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2506 char *s = scriptname + 8;
2507 *fdscript = atoi(s);
2511 scriptname = savepv(s + 1);
2512 Safefree(PL_origfilename);
2513 PL_origfilename = scriptname;
2519 Safefree(CopFILE(PL_curcop));
2521 SvREFCNT_dec(CopFILEGV(PL_curcop));
2523 CopFILE_set(PL_curcop, PL_origfilename);
2524 if (strEQ(PL_origfilename,"-"))
2526 if (*fdscript >= 0) {
2527 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2528 #if defined(HAS_FCNTL) && defined(F_SETFD)
2530 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2533 else if (PL_preprocess) {
2534 char *cpp_cfg = CPPSTDIN;
2535 SV *cpp = newSVpvn("",0);
2536 SV *cmd = NEWSV(0,0);
2538 if (strEQ(cpp_cfg, "cppstdin"))
2539 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2540 sv_catpv(cpp, cpp_cfg);
2542 sv_catpvn(sv, "-I", 2);
2543 sv_catpv(sv,PRIVLIB_EXP);
2545 #if defined(MSDOS) || defined(WIN32)
2546 Perl_sv_setpvf(aTHX_ cmd, "\
2547 sed %s -e \"/^[^#]/b\" \
2548 -e \"/^#[ ]*include[ ]/b\" \
2549 -e \"/^#[ ]*define[ ]/b\" \
2550 -e \"/^#[ ]*if[ ]/b\" \
2551 -e \"/^#[ ]*ifdef[ ]/b\" \
2552 -e \"/^#[ ]*ifndef[ ]/b\" \
2553 -e \"/^#[ ]*else/b\" \
2554 -e \"/^#[ ]*elif[ ]/b\" \
2555 -e \"/^#[ ]*undef[ ]/b\" \
2556 -e \"/^#[ ]*endif/b\" \
2558 %s | %"SVf" -C %"SVf" %s",
2559 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2562 Perl_sv_setpvf(aTHX_ cmd, "\
2563 %s %s -e '/^[^#]/b' \
2564 -e '/^#[ ]*include[ ]/b' \
2565 -e '/^#[ ]*define[ ]/b' \
2566 -e '/^#[ ]*if[ ]/b' \
2567 -e '/^#[ ]*ifdef[ ]/b' \
2568 -e '/^#[ ]*ifndef[ ]/b' \
2569 -e '/^#[ ]*else/b' \
2570 -e '/^#[ ]*elif[ ]/b' \
2571 -e '/^#[ ]*undef[ ]/b' \
2572 -e '/^#[ ]*endif/b' \
2574 %s | %"SVf" %"SVf" %s",
2576 Perl_sv_setpvf(aTHX_ cmd, "\
2577 %s %s -e '/^[^#]/b' \
2578 -e '/^#[ ]*include[ ]/b' \
2579 -e '/^#[ ]*define[ ]/b' \
2580 -e '/^#[ ]*if[ ]/b' \
2581 -e '/^#[ ]*ifdef[ ]/b' \
2582 -e '/^#[ ]*ifndef[ ]/b' \
2583 -e '/^#[ ]*else/b' \
2584 -e '/^#[ ]*elif[ ]/b' \
2585 -e '/^#[ ]*undef[ ]/b' \
2586 -e '/^#[ ]*endif/b' \
2588 %s | %"SVf" -C %"SVf" %s",
2595 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2597 scriptname, cpp, sv, CPPMINUS);
2598 PL_doextract = FALSE;
2599 #ifdef IAMSUID /* actually, this is caught earlier */
2600 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2602 (void)seteuid(PL_uid); /* musn't stay setuid root */
2605 (void)setreuid((Uid_t)-1, PL_uid);
2607 #ifdef HAS_SETRESUID
2608 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2610 PerlProc_setuid(PL_uid);
2614 if (PerlProc_geteuid() != PL_uid)
2615 Perl_croak(aTHX_ "Can't do seteuid!\n");
2617 #endif /* IAMSUID */
2618 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2622 else if (!*scriptname) {
2623 forbid_setid("program input from stdin");
2624 PL_rsfp = PerlIO_stdin();
2627 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2628 #if defined(HAS_FCNTL) && defined(F_SETFD)
2630 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2635 #ifndef IAMSUID /* in case script is not readable before setuid */
2637 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2638 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2641 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2642 (int)PERL_REVISION, (int)PERL_VERSION,
2643 (int)PERL_SUBVERSION), PL_origargv);
2644 Perl_croak(aTHX_ "Can't do setuid\n");
2648 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2649 CopFILE(PL_curcop), Strerror(errno));
2654 * I_SYSSTATVFS HAS_FSTATVFS
2656 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2657 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2658 * here so that metaconfig picks them up. */
2662 S_fd_on_nosuid_fs(pTHX_ int fd)
2664 int check_okay = 0; /* able to do all the required sys/libcalls */
2665 int on_nosuid = 0; /* the fd is on a nosuid fs */
2667 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2668 * fstatvfs() is UNIX98.
2669 * fstatfs() is 4.3 BSD.
2670 * ustat()+getmnt() is pre-4.3 BSD.
2671 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2672 * an irrelevant filesystem while trying to reach the right one.
2675 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2677 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2678 defined(HAS_FSTATVFS)
2679 # define FD_ON_NOSUID_CHECK_OKAY
2680 struct statvfs stfs;
2682 check_okay = fstatvfs(fd, &stfs) == 0;
2683 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2684 # endif /* fstatvfs */
2686 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2687 defined(PERL_MOUNT_NOSUID) && \
2688 defined(HAS_FSTATFS) && \
2689 defined(HAS_STRUCT_STATFS) && \
2690 defined(HAS_STRUCT_STATFS_F_FLAGS)
2691 # define FD_ON_NOSUID_CHECK_OKAY
2694 check_okay = fstatfs(fd, &stfs) == 0;
2695 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2696 # endif /* fstatfs */
2698 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2699 defined(PERL_MOUNT_NOSUID) && \
2700 defined(HAS_FSTAT) && \
2701 defined(HAS_USTAT) && \
2702 defined(HAS_GETMNT) && \
2703 defined(HAS_STRUCT_FS_DATA) && \
2705 # define FD_ON_NOSUID_CHECK_OKAY
2708 if (fstat(fd, &fdst) == 0) {
2710 if (ustat(fdst.st_dev, &us) == 0) {
2712 /* NOSTAT_ONE here because we're not examining fields which
2713 * vary between that case and STAT_ONE. */
2714 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2715 size_t cmplen = sizeof(us.f_fname);
2716 if (sizeof(fsd.fd_req.path) < cmplen)
2717 cmplen = sizeof(fsd.fd_req.path);
2718 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2719 fdst.st_dev == fsd.fd_req.dev) {
2721 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2727 # endif /* fstat+ustat+getmnt */
2729 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2730 defined(HAS_GETMNTENT) && \
2731 defined(HAS_HASMNTOPT) && \
2732 defined(MNTOPT_NOSUID)
2733 # define FD_ON_NOSUID_CHECK_OKAY
2734 FILE *mtab = fopen("/etc/mtab", "r");
2735 struct mntent *entry;
2736 struct stat stb, fsb;
2738 if (mtab && (fstat(fd, &stb) == 0)) {
2739 while (entry = getmntent(mtab)) {
2740 if (stat(entry->mnt_dir, &fsb) == 0
2741 && fsb.st_dev == stb.st_dev)
2743 /* found the filesystem */
2745 if (hasmntopt(entry, MNTOPT_NOSUID))
2748 } /* A single fs may well fail its stat(). */
2753 # endif /* getmntent+hasmntopt */
2756 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2759 #endif /* IAMSUID */
2762 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2768 /* do we need to emulate setuid on scripts? */
2770 /* This code is for those BSD systems that have setuid #! scripts disabled
2771 * in the kernel because of a security problem. Merely defining DOSUID
2772 * in perl will not fix that problem, but if you have disabled setuid
2773 * scripts in the kernel, this will attempt to emulate setuid and setgid
2774 * on scripts that have those now-otherwise-useless bits set. The setuid
2775 * root version must be called suidperl or sperlN.NNN. If regular perl
2776 * discovers that it has opened a setuid script, it calls suidperl with
2777 * the same argv that it had. If suidperl finds that the script it has
2778 * just opened is NOT setuid root, it sets the effective uid back to the
2779 * uid. We don't just make perl setuid root because that loses the
2780 * effective uid we had before invoking perl, if it was different from the
2783 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2784 * be defined in suidperl only. suidperl must be setuid root. The
2785 * Configure script will set this up for you if you want it.
2792 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2793 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2794 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2799 #ifndef HAS_SETREUID
2800 /* On this access check to make sure the directories are readable,
2801 * there is actually a small window that the user could use to make
2802 * filename point to an accessible directory. So there is a faint
2803 * chance that someone could execute a setuid script down in a
2804 * non-accessible directory. I don't know what to do about that.
2805 * But I don't think it's too important. The manual lies when
2806 * it says access() is useful in setuid programs.
2808 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2809 Perl_croak(aTHX_ "Permission denied");
2811 /* If we can swap euid and uid, then we can determine access rights
2812 * with a simple stat of the file, and then compare device and
2813 * inode to make sure we did stat() on the same file we opened.
2814 * Then we just have to make sure he or she can execute it.
2817 struct stat tmpstatbuf;
2821 setreuid(PL_euid,PL_uid) < 0
2824 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2827 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2828 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2829 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2830 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2831 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2832 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2833 Perl_croak(aTHX_ "Permission denied");
2835 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2836 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2837 (void)PerlIO_close(PL_rsfp);
2838 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2839 PerlIO_printf(PL_rsfp,
2840 "User %"Uid_t_f" tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2841 (Filename of set-id script was %s, uid %"Uid_t_f" gid %"Gid_t_f".)\n\nSincerely,\nperl\n",
2842 PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2843 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
2845 PL_statbuf.st_uid, PL_statbuf.st_gid);
2846 (void)PerlProc_pclose(PL_rsfp);
2848 Perl_croak(aTHX_ "Permission denied\n");
2852 setreuid(PL_uid,PL_euid) < 0
2854 # if defined(HAS_SETRESUID)
2855 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2858 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2859 Perl_croak(aTHX_ "Can't reswap uid and euid");
2860 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2861 Perl_croak(aTHX_ "Permission denied\n");
2863 #endif /* HAS_SETREUID */
2864 #endif /* IAMSUID */
2866 if (!S_ISREG(PL_statbuf.st_mode))
2867 Perl_croak(aTHX_ "Permission denied");
2868 if (PL_statbuf.st_mode & S_IWOTH)
2869 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2870 PL_doswitches = FALSE; /* -s is insecure in suid */
2871 CopLINE_inc(PL_curcop);
2872 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2873 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2874 Perl_croak(aTHX_ "No #! line");
2875 s = SvPV(PL_linestr,n_a)+2;
2877 while (!isSPACE(*s)) s++;
2878 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2879 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2880 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2881 Perl_croak(aTHX_ "Not a perl script");
2882 while (*s == ' ' || *s == '\t') s++;
2884 * #! arg must be what we saw above. They can invoke it by
2885 * mentioning suidperl explicitly, but they may not add any strange
2886 * arguments beyond what #! says if they do invoke suidperl that way.
2888 len = strlen(validarg);
2889 if (strEQ(validarg," PHOOEY ") ||
2890 strnNE(s,validarg,len) || !isSPACE(s[len]))
2891 Perl_croak(aTHX_ "Args must match #! line");
2894 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2895 PL_euid == PL_statbuf.st_uid)
2897 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2898 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2899 #endif /* IAMSUID */
2901 if (PL_euid) { /* oops, we're not the setuid root perl */
2902 (void)PerlIO_close(PL_rsfp);
2905 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2906 (int)PERL_REVISION, (int)PERL_VERSION,
2907 (int)PERL_SUBVERSION), PL_origargv);
2909 Perl_croak(aTHX_ "Can't do setuid\n");
2912 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2914 (void)setegid(PL_statbuf.st_gid);
2917 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2919 #ifdef HAS_SETRESGID
2920 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2922 PerlProc_setgid(PL_statbuf.st_gid);
2926 if (PerlProc_getegid() != PL_statbuf.st_gid)
2927 Perl_croak(aTHX_ "Can't do setegid!\n");
2929 if (PL_statbuf.st_mode & S_ISUID) {
2930 if (PL_statbuf.st_uid != PL_euid)
2932 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2935 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2937 #ifdef HAS_SETRESUID
2938 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2940 PerlProc_setuid(PL_statbuf.st_uid);
2944 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2945 Perl_croak(aTHX_ "Can't do seteuid!\n");
2947 else if (PL_uid) { /* oops, mustn't run as root */
2949 (void)seteuid((Uid_t)PL_uid);
2952 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2954 #ifdef HAS_SETRESUID
2955 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2957 PerlProc_setuid((Uid_t)PL_uid);
2961 if (PerlProc_geteuid() != PL_uid)
2962 Perl_croak(aTHX_ "Can't do seteuid!\n");
2965 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2966 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
2969 else if (PL_preprocess)
2970 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
2971 else if (fdscript >= 0)
2972 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
2974 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
2976 /* We absolutely must clear out any saved ids here, so we */
2977 /* exec the real perl, substituting fd script for scriptname. */
2978 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2979 PerlIO_rewind(PL_rsfp);
2980 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2981 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2982 if (!PL_origargv[which])
2983 Perl_croak(aTHX_ "Permission denied");
2984 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
2985 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
2986 #if defined(HAS_FCNTL) && defined(F_SETFD)
2987 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
2989 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
2990 (int)PERL_REVISION, (int)PERL_VERSION,
2991 (int)PERL_SUBVERSION), PL_origargv);/* try again */
2992 Perl_croak(aTHX_ "Can't do setuid\n");
2993 #endif /* IAMSUID */
2995 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
2996 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
2998 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
2999 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3001 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3004 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3005 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3006 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3007 /* not set-id, must be wrapped */
3013 S_find_beginning(pTHX)
3015 register char *s, *s2;
3017 /* skip forward in input to the real script? */
3020 #ifdef MACOS_TRADITIONAL
3021 /* Since the Mac OS does not honor !# arguments for us, we do it ourselves */
3023 while (PL_doextract || gMacPerl_AlwaysExtract) {
3024 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3025 if (!gMacPerl_AlwaysExtract)
3026 Perl_croak(aTHX_ "No Perl script found in input\n");
3028 if (PL_doextract) /* require explicit override ? */
3029 if (!OverrideExtract(PL_origfilename))
3030 Perl_croak(aTHX_ "User aborted script\n");
3032 PL_doextract = FALSE;
3034 /* Pater peccavi, file does not have #! */
3035 PerlIO_rewind(PL_rsfp);
3040 while (PL_doextract) {
3041 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3042 Perl_croak(aTHX_ "No Perl script found in input\n");
3044 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3045 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3046 PL_doextract = FALSE;
3047 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3049 while (*s == ' ' || *s == '\t') s++;
3051 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3052 if (strnEQ(s2-4,"perl",4))
3054 while ((s = moreswitches(s)))
3065 PL_uid = PerlProc_getuid();
3066 PL_euid = PerlProc_geteuid();
3067 PL_gid = PerlProc_getgid();
3068 PL_egid = PerlProc_getegid();
3070 PL_uid |= PL_gid << 16;
3071 PL_euid |= PL_egid << 16;
3073 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3077 S_forbid_setid(pTHX_ char *s)
3079 if (PL_euid != PL_uid)
3080 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3081 if (PL_egid != PL_gid)
3082 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3086 Perl_init_debugger(pTHX)
3089 HV *ostash = PL_curstash;
3091 PL_curstash = PL_debstash;
3092 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3093 AvREAL_off(PL_dbargs);
3094 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3095 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3096 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3097 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3098 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3099 sv_setiv(PL_DBsingle, 0);
3100 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3101 sv_setiv(PL_DBtrace, 0);
3102 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3103 sv_setiv(PL_DBsignal, 0);
3104 PL_curstash = ostash;
3107 #ifndef STRESS_REALLOC
3108 #define REASONABLE(size) (size)
3110 #define REASONABLE(size) (1) /* unreasonable */
3114 Perl_init_stacks(pTHX)
3116 /* start with 128-item stack and 8K cxstack */
3117 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3118 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3119 PL_curstackinfo->si_type = PERLSI_MAIN;
3120 PL_curstack = PL_curstackinfo->si_stack;
3121 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3123 PL_stack_base = AvARRAY(PL_curstack);
3124 PL_stack_sp = PL_stack_base;
3125 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3127 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3130 PL_tmps_max = REASONABLE(128);
3132 New(54,PL_markstack,REASONABLE(32),I32);
3133 PL_markstack_ptr = PL_markstack;
3134 PL_markstack_max = PL_markstack + REASONABLE(32);
3138 New(54,PL_scopestack,REASONABLE(32),I32);
3139 PL_scopestack_ix = 0;
3140 PL_scopestack_max = REASONABLE(32);
3142 New(54,PL_savestack,REASONABLE(128),ANY);
3143 PL_savestack_ix = 0;
3144 PL_savestack_max = REASONABLE(128);
3146 New(54,PL_retstack,REASONABLE(16),OP*);
3148 PL_retstack_max = REASONABLE(16);
3157 while (PL_curstackinfo->si_next)
3158 PL_curstackinfo = PL_curstackinfo->si_next;
3159 while (PL_curstackinfo) {
3160 PERL_SI *p = PL_curstackinfo->si_prev;
3161 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3162 Safefree(PL_curstackinfo->si_cxstack);
3163 Safefree(PL_curstackinfo);
3164 PL_curstackinfo = p;
3166 Safefree(PL_tmps_stack);
3167 Safefree(PL_markstack);
3168 Safefree(PL_scopestack);
3169 Safefree(PL_savestack);
3170 Safefree(PL_retstack);
3174 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3185 lex_start(PL_linestr);
3187 PL_subname = newSVpvn("main",4);
3191 S_init_predump_symbols(pTHX)
3197 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3198 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3199 GvMULTI_on(PL_stdingv);
3200 io = GvIOp(PL_stdingv);
3201 IoIFP(io) = PerlIO_stdin();
3202 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3204 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3206 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3209 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3211 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3213 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3215 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3216 GvMULTI_on(PL_stderrgv);
3217 io = GvIOp(PL_stderrgv);
3218 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3219 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3221 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3223 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3226 Safefree(PL_osname);
3227 PL_osname = savepv(OSNAME);
3231 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3238 argc--,argv++; /* skip name of script */
3239 if (PL_doswitches) {
3240 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3243 if (argv[0][1] == '-' && !argv[0][2]) {
3247 if ((s = strchr(argv[0], '='))) {
3249 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3252 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3255 PL_toptarget = NEWSV(0,0);
3256 sv_upgrade(PL_toptarget, SVt_PVFM);
3257 sv_setpvn(PL_toptarget, "", 0);
3258 PL_bodytarget = NEWSV(0,0);
3259 sv_upgrade(PL_bodytarget, SVt_PVFM);
3260 sv_setpvn(PL_bodytarget, "", 0);
3261 PL_formtarget = PL_bodytarget;
3264 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3265 #ifdef MACOS_TRADITIONAL
3266 /* $0 is not majick on a Mac */
3267 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3269 sv_setpv(GvSV(tmpgv),PL_origfilename);
3270 magicname("0", "0", 1);
3273 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3275 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3277 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3279 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280 GvMULTI_on(PL_argvgv);
3281 (void)gv_AVadd(PL_argvgv);
3282 av_clear(GvAVn(PL_argvgv));
3283 for (; argc > 0; argc--,argv++) {
3284 SV *sv = newSVpv(argv[0],0);
3285 av_push(GvAVn(PL_argvgv),sv);
3286 if (PL_widesyscalls)
3287 (void)sv_utf8_decode(sv);
3290 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3292 GvMULTI_on(PL_envgv);
3293 hv = GvHVn(PL_envgv);
3294 hv_magic(hv, PL_envgv, 'E');
3295 #if !defined( VMS) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) /* VMS doesn't have environ array */
3296 /* Note that if the supplied env parameter is actually a copy
3297 of the global environ then it may now point to free'd memory
3298 if the environment has been modified since. To avoid this
3299 problem we treat env==NULL as meaning 'use the default'
3304 environ[0] = Nullch;
3305 for (; *env; env++) {
3306 if (!(s = strchr(*env,'=')))
3312 sv = newSVpv(s--,0);
3313 (void)hv_store(hv, *env, s - *env, sv, 0);
3315 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3316 /* Sins of the RTL. See note in my_setenv(). */
3317 (void)PerlEnv_putenv(savepv(*env));
3321 #ifdef DYNAMIC_ENV_FETCH
3322 HvNAME(hv) = savepv(ENV_HV_NAME);
3326 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3327 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3331 S_init_perllib(pTHX)
3336 s = PerlEnv_getenv("PERL5LIB");
3338 incpush(s, TRUE, TRUE);
3340 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3342 /* Treat PERL5?LIB as a possible search list logical name -- the
3343 * "natural" VMS idiom for a Unix path string. We allow each
3344 * element to be a set of |-separated directories for compatibility.
3348 if (my_trnlnm("PERL5LIB",buf,0))
3349 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3351 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3355 /* Use the ~-expanded versions of APPLLIB (undocumented),
3356 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3359 incpush(APPLLIB_EXP, TRUE, TRUE);
3363 incpush(ARCHLIB_EXP, FALSE, FALSE);
3365 #ifdef MACOS_TRADITIONAL
3367 struct stat tmpstatbuf;
3368 SV * privdir = NEWSV(55, 0);
3369 char * macperl = PerlEnv_getenv("MACPERL");
3374 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3375 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3376 incpush(SvPVX(privdir), TRUE, FALSE);
3377 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3378 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3379 incpush(SvPVX(privdir), TRUE, FALSE);
3381 SvREFCNT_dec(privdir);
3384 incpush(":", FALSE, FALSE);
3387 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3390 incpush(PRIVLIB_EXP, TRUE, FALSE);
3392 incpush(PRIVLIB_EXP, FALSE, FALSE);
3396 /* sitearch is always relative to sitelib on Windows for
3397 * DLL-based path intuition to work correctly */
3398 # if !defined(WIN32)
3399 incpush(SITEARCH_EXP, FALSE, FALSE);
3405 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3407 incpush(SITELIB_EXP, FALSE, FALSE);
3411 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3412 incpush(SITELIB_STEM, FALSE, TRUE);
3415 #ifdef PERL_VENDORARCH_EXP
3416 /* vendorarch is always relative to vendorlib on Windows for
3417 * DLL-based path intuition to work correctly */
3418 # if !defined(WIN32)
3419 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3423 #ifdef PERL_VENDORLIB_EXP
3425 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3427 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3431 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3432 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3435 #ifdef PERL_OTHERLIBDIRS
3436 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3440 incpush(".", FALSE, FALSE);
3441 #endif /* MACOS_TRADITIONAL */
3445 # define PERLLIB_SEP ';'
3448 # define PERLLIB_SEP '|'
3450 # if defined(MACOS_TRADITIONAL)
3451 # define PERLLIB_SEP ','
3453 # define PERLLIB_SEP ':'
3457 #ifndef PERLLIB_MANGLE
3458 # define PERLLIB_MANGLE(s,n) (s)
3462 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3464 SV *subdir = Nullsv;
3469 if (addsubdirs || addoldvers) {
3470 subdir = sv_newmortal();
3473 /* Break at all separators */
3475 SV *libdir = NEWSV(55,0);
3478 /* skip any consecutive separators */
3479 while ( *p == PERLLIB_SEP ) {
3480 /* Uncomment the next line for PATH semantics */
3481 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3485 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3486 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3491 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3492 p = Nullch; /* break out */
3494 #ifdef MACOS_TRADITIONAL
3495 if (!strchr(SvPVX(libdir), ':'))
3496 sv_insert(libdir, 0, 0, ":", 1);
3497 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3498 sv_catpv(libdir, ":");
3502 * BEFORE pushing libdir onto @INC we may first push version- and
3503 * archname-specific sub-directories.
3505 if (addsubdirs || addoldvers) {
3506 #ifdef PERL_INC_VERSION_LIST
3507 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3508 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3509 const char **incver;
3511 struct stat tmpstatbuf;
3516 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3518 while (unix[len-1] == '/') len--; /* Cosmetic */
3519 sv_usepvn(libdir,unix,len);
3522 PerlIO_printf(Perl_error_log,
3523 "Failed to unixify @INC element \"%s\"\n",
3527 #ifdef MACOS_TRADITIONAL
3528 #define PERL_AV_SUFFIX_FMT ""
3529 #define PERL_ARCH_FMT ":%s"
3531 #define PERL_AV_SUFFIX_FMT "/"
3532 #define PERL_ARCH_FMT "/%s"
3534 /* .../version/archname if -d .../version/archname */
3535 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT PERL_ARCH_FMT,
3537 (int)PERL_REVISION, (int)PERL_VERSION,
3538 (int)PERL_SUBVERSION, ARCHNAME);
3539 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3540 S_ISDIR(tmpstatbuf.st_mode))
3541 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3543 /* .../version if -d .../version */
3544 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT, libdir,
3545 (int)PERL_REVISION, (int)PERL_VERSION,
3546 (int)PERL_SUBVERSION);
3547 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3548 S_ISDIR(tmpstatbuf.st_mode))
3549 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3551 /* .../archname if -d .../archname */
3552 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3553 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3554 S_ISDIR(tmpstatbuf.st_mode))
3555 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3558 #ifdef PERL_INC_VERSION_LIST
3560 for (incver = incverlist; *incver; incver++) {
3561 /* .../xxx if -d .../xxx */
3562 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3563 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3564 S_ISDIR(tmpstatbuf.st_mode))
3565 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3571 /* finally push this lib directory on the end of @INC */
3572 av_push(GvAVn(PL_incgv), libdir);
3577 STATIC struct perl_thread *
3578 S_init_main_thread(pTHX)
3580 #if !defined(PERL_IMPLICIT_CONTEXT)
3581 struct perl_thread *thr;
3585 Newz(53, thr, 1, struct perl_thread);
3586 PL_curcop = &PL_compiling;
3587 thr->interp = PERL_GET_INTERP;
3588 thr->cvcache = newHV();
3589 thr->threadsv = newAV();
3590 /* thr->threadsvp is set when find_threadsv is called */
3591 thr->specific = newAV();
3592 thr->flags = THRf_R_JOINABLE;
3593 MUTEX_INIT(&thr->mutex);
3594 /* Handcraft thrsv similarly to mess_sv */
3595 New(53, PL_thrsv, 1, SV);
3596 Newz(53, xpv, 1, XPV);
3597 SvFLAGS(PL_thrsv) = SVt_PV;
3598 SvANY(PL_thrsv) = (void*)xpv;
3599 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3600 SvPVX(PL_thrsv) = (char*)thr;
3601 SvCUR_set(PL_thrsv, sizeof(thr));
3602 SvLEN_set(PL_thrsv, sizeof(thr));
3603 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3604 thr->oursv = PL_thrsv;
3605 PL_chopset = " \n-";
3608 MUTEX_LOCK(&PL_threads_mutex);
3613 MUTEX_UNLOCK(&PL_threads_mutex);
3615 #ifdef HAVE_THREAD_INTERN
3616 Perl_init_thread_intern(thr);
3619 #ifdef SET_THREAD_SELF
3620 SET_THREAD_SELF(thr);
3622 thr->self = pthread_self();
3623 #endif /* SET_THREAD_SELF */
3627 * These must come after the SET_THR because sv_setpvn does
3628 * SvTAINT and the taint fields require dTHR.
3630 PL_toptarget = NEWSV(0,0);
3631 sv_upgrade(PL_toptarget, SVt_PVFM);
3632 sv_setpvn(PL_toptarget, "", 0);
3633 PL_bodytarget = NEWSV(0,0);
3634 sv_upgrade(PL_bodytarget, SVt_PVFM);
3635 sv_setpvn(PL_bodytarget, "", 0);
3636 PL_formtarget = PL_bodytarget;
3637 thr->errsv = newSVpvn("", 0);
3638 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3641 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3642 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3643 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3644 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3645 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3647 PL_reginterp_cnt = 0;
3651 #endif /* USE_THREADS */
3654 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3658 line_t oldline = CopLINE(PL_curcop);
3664 while (AvFILL(paramList) >= 0) {
3665 cv = (CV*)av_shift(paramList);
3667 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3668 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3674 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3678 (void)SvPV(atsv, len);
3681 PL_curcop = &PL_compiling;
3682 CopLINE_set(PL_curcop, oldline);
3683 if (paramList == PL_beginav)
3684 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3686 Perl_sv_catpvf(aTHX_ atsv,
3687 "%s failed--call queue aborted",
3688 paramList == PL_checkav ? "CHECK"
3689 : paramList == PL_initav ? "INIT"
3691 while (PL_scopestack_ix > oldscope)
3694 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3701 /* my_exit() was called */
3702 while (PL_scopestack_ix > oldscope)
3705 PL_curstash = PL_defstash;
3706 PL_curcop = &PL_compiling;
3707 CopLINE_set(PL_curcop, oldline);
3709 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3710 if (paramList == PL_beginav)
3711 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3713 Perl_croak(aTHX_ "%s failed--call queue aborted",
3714 paramList == PL_checkav ? "CHECK"
3715 : paramList == PL_initav ? "INIT"
3722 PL_curcop = &PL_compiling;
3723 CopLINE_set(PL_curcop, oldline);
3726 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3734 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3736 S_vcall_list_body(pTHX_ va_list args)
3738 CV *cv = va_arg(args, CV*);
3739 return call_list_body(cv);
3744 S_call_list_body(pTHX_ CV *cv)
3746 PUSHMARK(PL_stack_sp);
3747 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3752 Perl_my_exit(pTHX_ U32 status)
3756 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3757 thr, (unsigned long) status));
3766 STATUS_NATIVE_SET(status);
3773 Perl_my_failure_exit(pTHX)
3776 if (vaxc$errno & 1) {
3777 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3778 STATUS_NATIVE_SET(44);
3781 if (!vaxc$errno && errno) /* unlikely */
3782 STATUS_NATIVE_SET(44);
3784 STATUS_NATIVE_SET(vaxc$errno);
3789 STATUS_POSIX_SET(errno);
3791 exitstatus = STATUS_POSIX >> 8;
3792 if (exitstatus & 255)
3793 STATUS_POSIX_SET(exitstatus);
3795 STATUS_POSIX_SET(255);
3802 S_my_exit_jump(pTHX)
3805 register PERL_CONTEXT *cx;
3810 SvREFCNT_dec(PL_e_script);
3811 PL_e_script = Nullsv;
3814 POPSTACK_TO(PL_mainstack);
3815 if (cxstack_ix >= 0) {
3818 POPBLOCK(cx,PL_curpm);
3830 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3833 p = SvPVX(PL_e_script);
3834 nl = strchr(p, '\n');
3835 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3837 filter_del(read_e_script);
3840 sv_catpvn(buf_sv, p, nl-p);
3841 sv_chop(PL_e_script, nl);