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 PerlIO_init(); /* Hook to IO system */
277 PL_fdpid = newAV(); /* for remembering popen pids by fd */
278 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
284 =for apidoc perl_destruct
286 Shuts down a Perl interpreter. See L<perlembed>.
295 int destruct_level; /* 0=none, 1=full, 2=full with checks */
301 #endif /* USE_THREADS */
303 /* wait for all pseudo-forked children to finish */
304 PERL_WAIT_FOR_CHILDREN;
308 /* Pass 1 on any remaining threads: detach joinables, join zombies */
310 MUTEX_LOCK(&PL_threads_mutex);
311 DEBUG_S(PerlIO_printf(Perl_debug_log,
312 "perl_destruct: waiting for %d threads...\n",
314 for (t = thr->next; t != thr; t = t->next) {
315 MUTEX_LOCK(&t->mutex);
316 switch (ThrSTATE(t)) {
319 DEBUG_S(PerlIO_printf(Perl_debug_log,
320 "perl_destruct: joining zombie %p\n", t));
321 ThrSETSTATE(t, THRf_DEAD);
322 MUTEX_UNLOCK(&t->mutex);
325 * The SvREFCNT_dec below may take a long time (e.g. av
326 * may contain an object scalar whose destructor gets
327 * called) so we have to unlock threads_mutex and start
330 MUTEX_UNLOCK(&PL_threads_mutex);
332 SvREFCNT_dec((SV*)av);
333 DEBUG_S(PerlIO_printf(Perl_debug_log,
334 "perl_destruct: joined zombie %p OK\n", t));
336 case THRf_R_JOINABLE:
337 DEBUG_S(PerlIO_printf(Perl_debug_log,
338 "perl_destruct: detaching thread %p\n", t));
339 ThrSETSTATE(t, THRf_R_DETACHED);
341 * We unlock threads_mutex and t->mutex in the opposite order
342 * from which we locked them just so that DETACH won't
343 * deadlock if it panics. It's only a breach of good style
344 * not a bug since they are unlocks not locks.
346 MUTEX_UNLOCK(&PL_threads_mutex);
348 MUTEX_UNLOCK(&t->mutex);
351 DEBUG_S(PerlIO_printf(Perl_debug_log,
352 "perl_destruct: ignoring %p (state %u)\n",
354 MUTEX_UNLOCK(&t->mutex);
355 /* fall through and out */
358 /* We leave the above "Pass 1" loop with threads_mutex still locked */
360 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
361 while (PL_nthreads > 1)
363 DEBUG_S(PerlIO_printf(Perl_debug_log,
364 "perl_destruct: final wait for %d threads\n",
366 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
368 /* At this point, we're the last thread */
369 MUTEX_UNLOCK(&PL_threads_mutex);
370 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
371 MUTEX_DESTROY(&PL_threads_mutex);
372 COND_DESTROY(&PL_nthreads_cond);
373 #endif /* !defined(FAKE_THREADS) */
374 #endif /* USE_THREADS */
376 destruct_level = PL_perl_destruct_level;
380 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
382 if (destruct_level < i)
391 /* We must account for everything. */
393 /* Destroy the main CV and syntax tree */
395 PL_curpad = AvARRAY(PL_comppad);
396 op_free(PL_main_root);
397 PL_main_root = Nullop;
399 PL_curcop = &PL_compiling;
400 PL_main_start = Nullop;
401 SvREFCNT_dec(PL_main_cv);
405 if (PL_sv_objcount) {
407 * Try to destruct global references. We do this first so that the
408 * destructors and destructees still exist. Some sv's might remain.
409 * Non-referenced objects are on their own.
414 /* unhook hooks which will soon be, or use, destroyed data */
415 SvREFCNT_dec(PL_warnhook);
416 PL_warnhook = Nullsv;
417 SvREFCNT_dec(PL_diehook);
420 /* call exit list functions */
421 while (PL_exitlistlen-- > 0)
422 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
424 Safefree(PL_exitlist);
426 if (destruct_level == 0){
428 DEBUG_P(debprofdump());
430 /* The exit() function will do everything that needs doing. */
434 /* loosen bonds of global variables */
437 (void)PerlIO_close(PL_rsfp);
441 /* Filters for program text */
442 SvREFCNT_dec(PL_rsfp_filters);
443 PL_rsfp_filters = Nullav;
446 PL_preprocess = FALSE;
452 PL_doswitches = FALSE;
453 PL_dowarn = G_WARN_OFF;
454 PL_doextract = FALSE;
455 PL_sawampersand = FALSE; /* must save all match strings */
458 Safefree(PL_inplace);
460 SvREFCNT_dec(PL_patchlevel);
463 SvREFCNT_dec(PL_e_script);
464 PL_e_script = Nullsv;
467 /* magical thingies */
469 Safefree(PL_ofs); /* $, */
472 Safefree(PL_ors); /* $\ */
475 SvREFCNT_dec(PL_rs); /* $/ */
478 SvREFCNT_dec(PL_nrs); /* $/ helper */
481 PL_multiline = 0; /* $* */
482 Safefree(PL_osname); /* $^O */
485 SvREFCNT_dec(PL_statname);
486 PL_statname = Nullsv;
489 /* defgv, aka *_ should be taken care of elsewhere */
491 /* clean up after study() */
492 SvREFCNT_dec(PL_lastscream);
493 PL_lastscream = Nullsv;
494 Safefree(PL_screamfirst);
496 Safefree(PL_screamnext);
500 Safefree(PL_efloatbuf);
501 PL_efloatbuf = Nullch;
504 /* startup and shutdown function lists */
505 SvREFCNT_dec(PL_beginav);
506 SvREFCNT_dec(PL_endav);
507 SvREFCNT_dec(PL_checkav);
508 SvREFCNT_dec(PL_initav);
514 /* shortcuts just get cleared */
520 PL_argvoutgv = Nullgv;
522 PL_stderrgv = Nullgv;
523 PL_last_in_gv = Nullgv;
525 PL_debstash = Nullhv;
527 /* reset so print() ends up where we expect */
530 SvREFCNT_dec(PL_argvout_stack);
531 PL_argvout_stack = Nullav;
533 SvREFCNT_dec(PL_modglobal);
534 PL_modglobal = Nullhv;
535 SvREFCNT_dec(PL_preambleav);
536 PL_preambleav = Nullav;
537 SvREFCNT_dec(PL_subname);
539 SvREFCNT_dec(PL_linestr);
541 SvREFCNT_dec(PL_pidstatus);
542 PL_pidstatus = Nullhv;
543 SvREFCNT_dec(PL_toptarget);
544 PL_toptarget = Nullsv;
545 SvREFCNT_dec(PL_bodytarget);
546 PL_bodytarget = Nullsv;
547 PL_formtarget = Nullsv;
549 /* free locale stuff */
550 #ifdef USE_LOCALE_COLLATE
551 Safefree(PL_collation_name);
552 PL_collation_name = Nullch;
555 #ifdef USE_LOCALE_NUMERIC
556 Safefree(PL_numeric_name);
557 PL_numeric_name = Nullch;
560 /* clear utf8 character classes */
561 SvREFCNT_dec(PL_utf8_alnum);
562 SvREFCNT_dec(PL_utf8_alnumc);
563 SvREFCNT_dec(PL_utf8_ascii);
564 SvREFCNT_dec(PL_utf8_alpha);
565 SvREFCNT_dec(PL_utf8_space);
566 SvREFCNT_dec(PL_utf8_cntrl);
567 SvREFCNT_dec(PL_utf8_graph);
568 SvREFCNT_dec(PL_utf8_digit);
569 SvREFCNT_dec(PL_utf8_upper);
570 SvREFCNT_dec(PL_utf8_lower);
571 SvREFCNT_dec(PL_utf8_print);
572 SvREFCNT_dec(PL_utf8_punct);
573 SvREFCNT_dec(PL_utf8_xdigit);
574 SvREFCNT_dec(PL_utf8_mark);
575 SvREFCNT_dec(PL_utf8_toupper);
576 SvREFCNT_dec(PL_utf8_tolower);
577 PL_utf8_alnum = Nullsv;
578 PL_utf8_alnumc = Nullsv;
579 PL_utf8_ascii = Nullsv;
580 PL_utf8_alpha = Nullsv;
581 PL_utf8_space = Nullsv;
582 PL_utf8_cntrl = Nullsv;
583 PL_utf8_graph = Nullsv;
584 PL_utf8_digit = Nullsv;
585 PL_utf8_upper = Nullsv;
586 PL_utf8_lower = Nullsv;
587 PL_utf8_print = Nullsv;
588 PL_utf8_punct = Nullsv;
589 PL_utf8_xdigit = Nullsv;
590 PL_utf8_mark = Nullsv;
591 PL_utf8_toupper = Nullsv;
592 PL_utf8_totitle = Nullsv;
593 PL_utf8_tolower = Nullsv;
595 if (!specialWARN(PL_compiling.cop_warnings))
596 SvREFCNT_dec(PL_compiling.cop_warnings);
597 PL_compiling.cop_warnings = Nullsv;
599 SvREFCNT_dec(CopFILEGV(&PL_compiling));
600 CopFILEGV_set(&PL_compiling, Nullgv);
603 /* Prepare to destruct main symbol table. */
608 SvREFCNT_dec(PL_curstname);
609 PL_curstname = Nullsv;
611 /* clear queued errors */
612 SvREFCNT_dec(PL_errors);
616 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
617 if (PL_scopestack_ix != 0)
618 Perl_warner(aTHX_ WARN_INTERNAL,
619 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
620 (long)PL_scopestack_ix);
621 if (PL_savestack_ix != 0)
622 Perl_warner(aTHX_ WARN_INTERNAL,
623 "Unbalanced saves: %ld more saves than restores\n",
624 (long)PL_savestack_ix);
625 if (PL_tmps_floor != -1)
626 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
627 (long)PL_tmps_floor + 1);
628 if (cxstack_ix != -1)
629 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
630 (long)cxstack_ix + 1);
633 /* Now absolutely destruct everything, somehow or other, loops or no. */
635 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
636 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
637 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
638 last_sv_count = PL_sv_count;
641 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
642 SvFLAGS(PL_fdpid) |= SVt_PVAV;
643 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
644 SvFLAGS(PL_strtab) |= SVt_PVHV;
646 AvREAL_off(PL_fdpid); /* no surviving entries */
647 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
650 /* Destruct the global string table. */
652 /* Yell and reset the HeVAL() slots that are still holding refcounts,
653 * so that sv_free() won't fail on them.
661 max = HvMAX(PL_strtab);
662 array = HvARRAY(PL_strtab);
665 if (hent && ckWARN_d(WARN_INTERNAL)) {
666 Perl_warner(aTHX_ WARN_INTERNAL,
667 "Unbalanced string table refcount: (%d) for \"%s\"",
668 HeVAL(hent) - Nullsv, HeKEY(hent));
669 HeVAL(hent) = Nullsv;
679 SvREFCNT_dec(PL_strtab);
681 /* free special SVs */
683 SvREFCNT(&PL_sv_yes) = 0;
684 sv_clear(&PL_sv_yes);
685 SvANY(&PL_sv_yes) = NULL;
686 SvFLAGS(&PL_sv_yes) = 0;
688 SvREFCNT(&PL_sv_no) = 0;
690 SvANY(&PL_sv_no) = NULL;
691 SvFLAGS(&PL_sv_no) = 0;
693 SvREFCNT(&PL_sv_undef) = 0;
694 SvREADONLY_off(&PL_sv_undef);
696 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
697 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
701 /* No SVs have survived, need to clean out */
702 Safefree(PL_origfilename);
703 Safefree(PL_reg_start_tmp);
705 Safefree(PL_reg_curpm);
706 Safefree(PL_reg_poscache);
707 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
708 Safefree(PL_op_mask);
710 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
712 DEBUG_P(debprofdump());
714 MUTEX_DESTROY(&PL_strtab_mutex);
715 MUTEX_DESTROY(&PL_sv_mutex);
716 MUTEX_DESTROY(&PL_eval_mutex);
717 MUTEX_DESTROY(&PL_cred_mutex);
718 COND_DESTROY(&PL_eval_cond);
719 #ifdef EMULATE_ATOMIC_REFCOUNTS
720 MUTEX_DESTROY(&PL_svref_mutex);
721 #endif /* EMULATE_ATOMIC_REFCOUNTS */
723 /* As the penultimate thing, free the non-arena SV for thrsv */
724 Safefree(SvPVX(PL_thrsv));
725 Safefree(SvANY(PL_thrsv));
728 #endif /* USE_THREADS */
730 /* As the absolutely last thing, free the non-arena SV for mess() */
733 /* it could have accumulated taint magic */
734 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
737 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
738 moremagic = mg->mg_moremagic;
739 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
740 Safefree(mg->mg_ptr);
744 /* we know that type >= SVt_PV */
745 (void)SvOOK_off(PL_mess_sv);
746 Safefree(SvPVX(PL_mess_sv));
747 Safefree(SvANY(PL_mess_sv));
748 Safefree(PL_mess_sv);
754 =for apidoc perl_free
756 Releases a Perl interpreter. See L<perlembed>.
764 #if defined(PERL_OBJECT)
767 # if defined(PERL_IMPLICIT_SYS) && defined(WIN32)
768 void *host = w32_internal_host;
770 win32_delete_internal_host(host);
778 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
780 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
781 PL_exitlist[PL_exitlistlen].fn = fn;
782 PL_exitlist[PL_exitlistlen].ptr = ptr;
787 =for apidoc perl_parse
789 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
795 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
805 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
808 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
809 setuid perl scripts securely.\n");
813 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
814 _dyld_lookup_and_bind
815 ("__environ", (unsigned long *) &environ_pointer, NULL);
820 #ifndef VMS /* VMS doesn't have environ array */
821 PL_origenviron = environ;
826 /* Come here if running an undumped a.out. */
828 PL_origfilename = savepv(argv[0]);
829 PL_do_undump = FALSE;
830 cxstack_ix = -1; /* start label stack again */
832 init_postdump_symbols(argc,argv,env);
837 PL_curpad = AvARRAY(PL_comppad);
838 op_free(PL_main_root);
839 PL_main_root = Nullop;
841 PL_main_start = Nullop;
842 SvREFCNT_dec(PL_main_cv);
846 oldscope = PL_scopestack_ix;
847 PL_dowarn = G_WARN_OFF;
849 #ifdef PERL_FLEXIBLE_EXCEPTIONS
850 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
856 #ifndef PERL_FLEXIBLE_EXCEPTIONS
857 parse_body(env,xsinit);
860 call_list(oldscope, PL_checkav);
867 /* my_exit() was called */
868 while (PL_scopestack_ix > oldscope)
871 PL_curstash = PL_defstash;
873 call_list(oldscope, PL_checkav);
874 ret = STATUS_NATIVE_EXPORT;
877 PerlIO_printf(Perl_error_log, "panic: top_env\n");
885 #ifdef PERL_FLEXIBLE_EXCEPTIONS
887 S_vparse_body(pTHX_ va_list args)
889 char **env = va_arg(args, char**);
890 XSINIT_t xsinit = va_arg(args, XSINIT_t);
892 return parse_body(env, xsinit);
897 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
900 int argc = PL_origargc;
901 char **argv = PL_origargv;
902 char *scriptname = NULL;
904 VOL bool dosearch = FALSE;
909 char *cddir = Nullch;
911 sv_setpvn(PL_linestr,"",0);
912 sv = newSVpvn("",0); /* first used for -I flags */
916 for (argc--,argv++; argc > 0; argc--,argv++) {
917 if (argv[0][0] != '-' || !argv[0][1])
921 validarg = " PHOOEY ";
930 win32_argv2utf8(argc-1, argv+1);
933 #ifndef PERL_STRICT_CR
957 if ((s = moreswitches(s)))
967 if (PL_euid != PL_uid || PL_egid != PL_gid)
968 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
970 PL_e_script = newSVpvn("",0);
971 filter_add(read_e_script, NULL);
974 sv_catpv(PL_e_script, s);
976 sv_catpv(PL_e_script, argv[1]);
980 Perl_croak(aTHX_ "No code specified for -e");
981 sv_catpv(PL_e_script, "\n");
984 case 'I': /* -I handled both here and in moreswitches() */
986 if (!*++s && (s=argv[1]) != Nullch) {
991 STRLEN len = strlen(s);
993 incpush(p, TRUE, TRUE);
994 sv_catpvn(sv, "-I", 2);
995 sv_catpvn(sv, p, len);
996 sv_catpvn(sv, " ", 1);
1000 Perl_croak(aTHX_ "No directory specified for -I");
1004 PL_preprocess = TRUE;
1014 PL_preambleav = newAV();
1015 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1017 PL_Sv = newSVpv("print myconfig();",0);
1019 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1021 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1023 sv_catpv(PL_Sv,"\" Compile-time options:");
1025 sv_catpv(PL_Sv," DEBUGGING");
1027 # ifdef MULTIPLICITY
1028 sv_catpv(PL_Sv," MULTIPLICITY");
1031 sv_catpv(PL_Sv," USE_THREADS");
1033 # ifdef USE_ITHREADS
1034 sv_catpv(PL_Sv," USE_ITHREADS");
1036 # ifdef USE_64_BIT_INT
1037 sv_catpv(PL_Sv," USE_64_BIT_INT");
1039 # ifdef USE_64_BIT_ALL
1040 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1042 # ifdef USE_LONG_DOUBLE
1043 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1045 # ifdef USE_LARGE_FILES
1046 sv_catpv(PL_Sv," USE_LARGE_FILES");
1049 sv_catpv(PL_Sv," USE_SOCKS");
1052 sv_catpv(PL_Sv," PERL_OBJECT");
1054 # ifdef PERL_IMPLICIT_CONTEXT
1055 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1057 # ifdef PERL_IMPLICIT_SYS
1058 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1060 sv_catpv(PL_Sv,"\\n\",");
1062 #if defined(LOCAL_PATCH_COUNT)
1063 if (LOCAL_PATCH_COUNT > 0) {
1065 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1066 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1067 if (PL_localpatches[i])
1068 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1072 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1075 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1077 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1080 sv_catpv(PL_Sv, "; \
1082 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1083 print \" \\%ENV:\\n @env\\n\" if @env; \
1084 print \" \\@INC:\\n @INC\\n\";");
1087 PL_Sv = newSVpv("config_vars(qw(",0);
1088 sv_catpv(PL_Sv, ++s);
1089 sv_catpv(PL_Sv, "))");
1092 av_push(PL_preambleav, PL_Sv);
1093 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1096 PL_doextract = TRUE;
1104 if (!*++s || isSPACE(*s)) {
1108 /* catch use of gnu style long options */
1109 if (strEQ(s, "version")) {
1113 if (strEQ(s, "help")) {
1120 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1126 #ifndef SECURE_INTERNAL_GETENV
1129 (s = PerlEnv_getenv("PERL5OPT")))
1133 if (*s == '-' && *(s+1) == 'T')
1146 if (!strchr("DIMUdmw", *s))
1147 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1148 s = moreswitches(s);
1154 scriptname = argv[0];
1157 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1159 else if (scriptname == Nullch) {
1161 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1169 open_script(scriptname,dosearch,sv,&fdscript);
1171 validate_suid(validarg, scriptname,fdscript);
1173 #if defined(SIGCHLD) || defined(SIGCLD)
1176 # define SIGCHLD SIGCLD
1178 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1179 if (sigstate == SIG_IGN) {
1180 if (ckWARN(WARN_SIGNAL))
1181 Perl_warner(aTHX_ WARN_SIGNAL,
1182 "Can't ignore signal CHLD, forcing to default");
1183 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1190 if (cddir && PerlDir_chdir(cddir) < 0)
1191 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1195 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1196 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1197 CvUNIQUE_on(PL_compcv);
1199 PL_comppad = newAV();
1200 av_push(PL_comppad, Nullsv);
1201 PL_curpad = AvARRAY(PL_comppad);
1202 PL_comppad_name = newAV();
1203 PL_comppad_name_fill = 0;
1204 PL_min_intro_pending = 0;
1207 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1208 PL_curpad[0] = (SV*)newAV();
1209 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1210 CvOWNER(PL_compcv) = 0;
1211 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1212 MUTEX_INIT(CvMUTEXP(PL_compcv));
1213 #endif /* USE_THREADS */
1215 comppadlist = newAV();
1216 AvREAL_off(comppadlist);
1217 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1218 av_store(comppadlist, 1, (SV*)PL_comppad);
1219 CvPADLIST(PL_compcv) = comppadlist;
1221 boot_core_UNIVERSAL();
1223 boot_core_xsutils();
1227 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1228 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__)
1236 init_predump_symbols();
1237 /* init_postdump_symbols not currently designed to be called */
1238 /* more than once (ENV isn't cleared first, for example) */
1239 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1241 init_postdump_symbols(argc,argv,env);
1245 /* now parse the script */
1247 SETERRNO(0,SS$_NORMAL);
1249 if (yyparse() || PL_error_count) {
1251 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1253 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1257 CopLINE_set(PL_curcop, 0);
1258 PL_curstash = PL_defstash;
1259 PL_preprocess = FALSE;
1261 SvREFCNT_dec(PL_e_script);
1262 PL_e_script = Nullsv;
1265 /* now that script is parsed, we can modify record separator */
1266 SvREFCNT_dec(PL_rs);
1267 PL_rs = SvREFCNT_inc(PL_nrs);
1268 sv_setsv(get_sv("/", TRUE), PL_rs);
1273 SAVECOPFILE(PL_curcop);
1274 SAVECOPLINE(PL_curcop);
1275 gv_check(PL_defstash);
1282 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1283 dump_mstats("after compilation:");
1292 =for apidoc perl_run
1294 Tells a Perl interpreter to run. See L<perlembed>.
1310 oldscope = PL_scopestack_ix;
1312 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1314 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1320 cxstack_ix = -1; /* start context stack again */
1322 case 0: /* normal completion */
1323 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1328 case 2: /* my_exit() */
1329 while (PL_scopestack_ix > oldscope)
1332 PL_curstash = PL_defstash;
1333 if (PL_endav && !PL_minus_c)
1334 call_list(oldscope, PL_endav);
1336 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1337 dump_mstats("after execution: ");
1339 ret = STATUS_NATIVE_EXPORT;
1343 POPSTACK_TO(PL_mainstack);
1346 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1356 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1358 S_vrun_body(pTHX_ va_list args)
1360 I32 oldscope = va_arg(args, I32);
1362 return run_body(oldscope);
1368 S_run_body(pTHX_ I32 oldscope)
1372 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1373 PL_sawampersand ? "Enabling" : "Omitting"));
1375 if (!PL_restartop) {
1376 DEBUG_x(dump_all());
1377 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1378 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1382 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1385 if (PERLDB_SINGLE && PL_DBsingle)
1386 sv_setiv(PL_DBsingle, 1);
1388 call_list(oldscope, PL_initav);
1394 PL_op = PL_restartop;
1398 else if (PL_main_start) {
1399 CvDEPTH(PL_main_cv) = 1;
1400 PL_op = PL_main_start;
1410 =for apidoc p||get_sv
1412 Returns the SV of the specified Perl scalar. If C<create> is set and the
1413 Perl variable does not exist then it will be created. If C<create> is not
1414 set and the variable does not exist then NULL is returned.
1420 Perl_get_sv(pTHX_ const char *name, I32 create)
1424 if (name[1] == '\0' && !isALPHA(name[0])) {
1425 PADOFFSET tmp = find_threadsv(name);
1426 if (tmp != NOT_IN_PAD) {
1428 return THREADSV(tmp);
1431 #endif /* USE_THREADS */
1432 gv = gv_fetchpv(name, create, SVt_PV);
1439 =for apidoc p||get_av
1441 Returns the AV of the specified Perl array. If C<create> is set and the
1442 Perl variable does not exist then it will be created. If C<create> is not
1443 set and the variable does not exist then NULL is returned.
1449 Perl_get_av(pTHX_ const char *name, I32 create)
1451 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1460 =for apidoc p||get_hv
1462 Returns the HV of the specified Perl hash. If C<create> is set and the
1463 Perl variable does not exist then it will be created. If C<create> is not
1464 set and the variable does not exist then NULL is returned.
1470 Perl_get_hv(pTHX_ const char *name, I32 create)
1472 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1481 =for apidoc p||get_cv
1483 Returns the CV of the specified Perl subroutine. If C<create> is set and
1484 the Perl subroutine does not exist then it will be declared (which has the
1485 same effect as saying C<sub name;>). If C<create> is not set and the
1486 subroutine does not exist then NULL is returned.
1492 Perl_get_cv(pTHX_ const char *name, I32 create)
1494 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1495 /* XXX unsafe for threads if eval_owner isn't held */
1496 /* XXX this is probably not what they think they're getting.
1497 * It has the same effect as "sub name;", i.e. just a forward
1499 if (create && !GvCVu(gv))
1500 return newSUB(start_subparse(FALSE, 0),
1501 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1509 /* Be sure to refetch the stack pointer after calling these routines. */
1512 =for apidoc p||call_argv
1514 Performs a callback to the specified Perl sub. See L<perlcall>.
1520 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1522 /* See G_* flags in cop.h */
1523 /* null terminated arg list */
1530 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1535 return call_pv(sub_name, flags);
1539 =for apidoc p||call_pv
1541 Performs a callback to the specified Perl sub. See L<perlcall>.
1547 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1548 /* name of the subroutine */
1549 /* See G_* flags in cop.h */
1551 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1555 =for apidoc p||call_method
1557 Performs a callback to the specified Perl method. The blessed object must
1558 be on the stack. See L<perlcall>.
1564 Perl_call_method(pTHX_ const char *methname, I32 flags)
1565 /* name of the subroutine */
1566 /* See G_* flags in cop.h */
1574 XPUSHs(sv_2mortal(newSVpv(methname,0)));
1579 return call_sv(*PL_stack_sp--, flags);
1582 /* May be called with any of a CV, a GV, or an SV containing the name. */
1584 =for apidoc p||call_sv
1586 Performs a callback to the Perl sub whose name is in the SV. See
1593 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1595 /* See G_* flags in cop.h */
1598 LOGOP myop; /* fake syntax tree node */
1602 bool oldcatch = CATCH_GET;
1607 if (flags & G_DISCARD) {
1612 Zero(&myop, 1, LOGOP);
1613 myop.op_next = Nullop;
1614 if (!(flags & G_NOARGS))
1615 myop.op_flags |= OPf_STACKED;
1616 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1617 (flags & G_ARRAY) ? OPf_WANT_LIST :
1622 EXTEND(PL_stack_sp, 1);
1623 *++PL_stack_sp = sv;
1625 oldscope = PL_scopestack_ix;
1627 if (PERLDB_SUB && PL_curstash != PL_debstash
1628 /* Handle first BEGIN of -d. */
1629 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1630 /* Try harder, since this may have been a sighandler, thus
1631 * curstash may be meaningless. */
1632 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1633 && !(flags & G_NODEBUG))
1634 PL_op->op_private |= OPpENTERSUB_DB;
1636 if (!(flags & G_EVAL)) {
1638 call_body((OP*)&myop, FALSE);
1639 retval = PL_stack_sp - (PL_stack_base + oldmark);
1640 CATCH_SET(oldcatch);
1643 cLOGOP->op_other = PL_op;
1645 /* we're trying to emulate pp_entertry() here */
1647 register PERL_CONTEXT *cx;
1648 I32 gimme = GIMME_V;
1653 push_return(PL_op->op_next);
1654 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1656 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1658 PL_in_eval = EVAL_INEVAL;
1659 if (flags & G_KEEPERR)
1660 PL_in_eval |= EVAL_KEEPERR;
1666 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1668 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1675 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1677 call_body((OP*)&myop, FALSE);
1679 retval = PL_stack_sp - (PL_stack_base + oldmark);
1680 if (!(flags & G_KEEPERR))
1687 /* my_exit() was called */
1688 PL_curstash = PL_defstash;
1691 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1692 Perl_croak(aTHX_ "Callback called exit");
1697 PL_op = PL_restartop;
1701 PL_stack_sp = PL_stack_base + oldmark;
1702 if (flags & G_ARRAY)
1706 *++PL_stack_sp = &PL_sv_undef;
1711 if (PL_scopestack_ix > oldscope) {
1715 register PERL_CONTEXT *cx;
1727 if (flags & G_DISCARD) {
1728 PL_stack_sp = PL_stack_base + oldmark;
1737 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1739 S_vcall_body(pTHX_ va_list args)
1741 OP *myop = va_arg(args, OP*);
1742 int is_eval = va_arg(args, int);
1744 call_body(myop, is_eval);
1750 S_call_body(pTHX_ OP *myop, int is_eval)
1754 if (PL_op == myop) {
1756 PL_op = Perl_pp_entereval(aTHX);
1758 PL_op = Perl_pp_entersub(aTHX);
1764 /* Eval a string. The G_EVAL flag is always assumed. */
1767 =for apidoc p||eval_sv
1769 Tells Perl to C<eval> the string in the SV.
1775 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1777 /* See G_* flags in cop.h */
1780 UNOP myop; /* fake syntax tree node */
1781 I32 oldmark = SP - PL_stack_base;
1788 if (flags & G_DISCARD) {
1795 Zero(PL_op, 1, UNOP);
1796 EXTEND(PL_stack_sp, 1);
1797 *++PL_stack_sp = sv;
1798 oldscope = PL_scopestack_ix;
1800 if (!(flags & G_NOARGS))
1801 myop.op_flags = OPf_STACKED;
1802 myop.op_next = Nullop;
1803 myop.op_type = OP_ENTEREVAL;
1804 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1805 (flags & G_ARRAY) ? OPf_WANT_LIST :
1807 if (flags & G_KEEPERR)
1808 myop.op_flags |= OPf_SPECIAL;
1810 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1812 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1819 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1821 call_body((OP*)&myop,TRUE);
1823 retval = PL_stack_sp - (PL_stack_base + oldmark);
1824 if (!(flags & G_KEEPERR))
1831 /* my_exit() was called */
1832 PL_curstash = PL_defstash;
1835 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1836 Perl_croak(aTHX_ "Callback called exit");
1841 PL_op = PL_restartop;
1845 PL_stack_sp = PL_stack_base + oldmark;
1846 if (flags & G_ARRAY)
1850 *++PL_stack_sp = &PL_sv_undef;
1856 if (flags & G_DISCARD) {
1857 PL_stack_sp = PL_stack_base + oldmark;
1867 =for apidoc p||eval_pv
1869 Tells Perl to C<eval> the given string and return an SV* result.
1875 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1878 SV* sv = newSVpv(p, 0);
1881 eval_sv(sv, G_SCALAR);
1888 if (croak_on_error && SvTRUE(ERRSV)) {
1890 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1896 /* Require a module. */
1899 =for apidoc p||require_pv
1901 Tells Perl to C<require> a module.
1907 Perl_require_pv(pTHX_ const char *pv)
1911 PUSHSTACKi(PERLSI_REQUIRE);
1913 sv = sv_newmortal();
1914 sv_setpv(sv, "require '");
1917 eval_sv(sv, G_DISCARD);
1923 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
1927 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
1928 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1932 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
1934 /* This message really ought to be max 23 lines.
1935 * Removed -h because the user already knows that opton. Others? */
1937 static char *usage_msg[] = {
1938 "-0[octal] specify record separator (\\0, if no argument)",
1939 "-a autosplit mode with -n or -p (splits $_ into @F)",
1940 "-C enable native wide character system interfaces",
1941 "-c check syntax only (runs BEGIN and END blocks)",
1942 "-d[:debugger] run program under debugger",
1943 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1944 "-e 'command' one line of program (several -e's allowed, omit programfile)",
1945 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
1946 "-i[extension] edit <> files in place (makes backup if extension supplied)",
1947 "-Idirectory specify @INC/#include directory (several -I's allowed)",
1948 "-l[octal] enable line ending processing, specifies line terminator",
1949 "-[mM][-]module execute `use/no module...' before executing program",
1950 "-n assume 'while (<>) { ... }' loop around program",
1951 "-p assume loop like -n but print line also, like sed",
1952 "-P run program through C preprocessor before compilation",
1953 "-s enable rudimentary parsing for switches after programfile",
1954 "-S look for programfile using PATH environment variable",
1955 "-T enable tainting checks",
1956 "-u dump core after parsing program",
1957 "-U allow unsafe operations",
1958 "-v print version, subversion (includes VERY IMPORTANT perl info)",
1959 "-V[:variable] print configuration summary (or a single Config.pm variable)",
1960 "-w enable many useful warnings (RECOMMENDED)",
1961 "-W enable all warnings",
1962 "-X disable all warnings",
1963 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
1967 char **p = usage_msg;
1969 printf("\nUsage: %s [switches] [--] [programfile] [arguments]", name);
1971 printf("\n %s", *p++);
1974 /* This routine handles any switches that can be given during run */
1977 Perl_moreswitches(pTHX_ char *s)
1986 rschar = (U32)scan_oct(s, 4, &numlen);
1987 SvREFCNT_dec(PL_nrs);
1988 if (rschar & ~((U8)~0))
1989 PL_nrs = &PL_sv_undef;
1990 else if (!rschar && numlen >= 2)
1991 PL_nrs = newSVpvn("", 0);
1994 PL_nrs = newSVpvn(&ch, 1);
1999 PL_widesyscalls = TRUE;
2004 PL_splitstr = savepv(s + 1);
2018 if (*s == ':' || *s == '=') {
2019 my_setenv("PERL5DB", Perl_form(aTHX_ "use Devel::%s;", ++s));
2023 PL_perldb = PERLDB_ALL;
2031 if (isALPHA(s[1])) {
2032 static char debopts[] = "psltocPmfrxuLHXDS";
2035 for (s++; *s && (d = strchr(debopts,*s)); s++)
2036 PL_debug |= 1 << (d - debopts);
2039 PL_debug = atoi(s+1);
2040 for (s++; isDIGIT(*s); s++) ;
2042 PL_debug |= 0x80000000;
2045 if (ckWARN_d(WARN_DEBUGGING))
2046 Perl_warner(aTHX_ WARN_DEBUGGING,
2047 "Recompile perl with -DDEBUGGING to use -D switch\n");
2048 for (s++; isALNUM(*s); s++) ;
2054 usage(PL_origargv[0]);
2058 Safefree(PL_inplace);
2059 PL_inplace = savepv(s+1);
2061 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2064 if (*s == '-') /* Additional switches on #! line. */
2068 case 'I': /* -I handled both here and in parse_perl() */
2071 while (*s && isSPACE(*s))
2076 /* ignore trailing spaces (possibly followed by other switches) */
2078 for (e = p; *e && !isSPACE(*e); e++) ;
2082 } while (*p && *p != '-');
2083 e = savepvn(s, e-s);
2084 incpush(e, TRUE, TRUE);
2091 Perl_croak(aTHX_ "No directory specified for -I");
2099 PL_ors = savepv("\n");
2101 *PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2106 if (RsPARA(PL_nrs)) {
2111 PL_ors = SvPV(PL_nrs, PL_orslen);
2112 PL_ors = savepvn(PL_ors, PL_orslen);
2116 forbid_setid("-M"); /* XXX ? */
2119 forbid_setid("-m"); /* XXX ? */
2124 /* -M-foo == 'no foo' */
2125 if (*s == '-') { use = "no "; ++s; }
2126 sv = newSVpv(use,0);
2128 /* We allow -M'Module qw(Foo Bar)' */
2129 while(isALNUM(*s) || *s==':') ++s;
2131 sv_catpv(sv, start);
2132 if (*(start-1) == 'm') {
2134 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2135 sv_catpv( sv, " ()");
2138 sv_catpvn(sv, start, s-start);
2139 sv_catpv(sv, " split(/,/,q{");
2145 PL_preambleav = newAV();
2146 av_push(PL_preambleav, sv);
2149 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2161 PL_doswitches = TRUE;
2166 Perl_croak(aTHX_ "Too late for \"-T\" option");
2170 PL_do_undump = TRUE;
2178 printf(Perl_form(aTHX_ "\nThis is perl, v%vd built for %s",
2179 PL_patchlevel, ARCHNAME));
2180 #if defined(LOCAL_PATCH_COUNT)
2181 if (LOCAL_PATCH_COUNT > 0)
2182 printf("\n(with %d registered patch%s, see perl -V for more detail)",
2183 (int)LOCAL_PATCH_COUNT, (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2186 printf("\n\nCopyright 1987-2000, Larry Wall\n");
2188 printf("\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2191 printf("djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n");
2192 printf("djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2195 printf("\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2196 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2199 printf("atariST series port, ++jrb bammi@cadence.com\n");
2202 printf("BeOS port Copyright Tom Spindler, 1997-1999\n");
2205 printf("MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
2208 printf("MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2211 printf("Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2214 printf("VM/ESA port by Neale Ferguson, 1998-1999\n");
2217 printf("BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2220 printf("MiNT port by Guido Flohr, 1997-1999\n");
2223 printf("EPOC port by Olaf Flebbe, 1999-2000\n");
2225 #ifdef BINARY_BUILD_NOTICE
2226 BINARY_BUILD_NOTICE;
2229 Perl may be copied only under the terms of either the Artistic License or the\n\
2230 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
2231 Complete documentation for Perl, including FAQ lists, should be found on\n\
2232 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2233 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2236 if (! (PL_dowarn & G_WARN_ALL_MASK))
2237 PL_dowarn |= G_WARN_ON;
2241 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2242 PL_compiling.cop_warnings = pWARN_ALL ;
2246 PL_dowarn = G_WARN_ALL_OFF;
2247 PL_compiling.cop_warnings = pWARN_NONE ;
2252 if (s[1] == '-') /* Additional switches on #! line. */
2257 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2263 #ifdef ALTERNATE_SHEBANG
2264 case 'S': /* OS/2 needs -S on "extproc" line. */
2272 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2277 /* compliments of Tom Christiansen */
2279 /* unexec() can be found in the Gnu emacs distribution */
2280 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2283 Perl_my_unexec(pTHX)
2291 prog = newSVpv(BIN_EXP, 0);
2292 sv_catpv(prog, "/perl");
2293 file = newSVpv(PL_origfilename, 0);
2294 sv_catpv(file, ".perldump");
2296 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2297 /* unexec prints msg to stderr in case of failure */
2298 PerlProc_exit(status);
2301 # include <lib$routines.h>
2302 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2304 ABORT(); /* for use with undump */
2309 /* initialize curinterp */
2314 #ifdef PERL_OBJECT /* XXX kludge */
2317 PL_chopset = " \n-"; \
2318 PL_copline = NOLINE; \
2319 PL_curcop = &PL_compiling;\
2320 PL_curcopdb = NULL; \
2322 PL_dumpindent = 4; \
2323 PL_laststatval = -1; \
2324 PL_laststype = OP_STAT; \
2325 PL_maxscream = -1; \
2326 PL_maxsysfd = MAXSYSFD; \
2327 PL_statname = Nullsv; \
2328 PL_tmps_floor = -1; \
2330 PL_op_mask = NULL; \
2331 PL_laststatval = -1; \
2332 PL_laststype = OP_STAT; \
2333 PL_mess_sv = Nullsv; \
2334 PL_splitstr = " "; \
2335 PL_generation = 100; \
2336 PL_exitlist = NULL; \
2337 PL_exitlistlen = 0; \
2339 PL_in_clean_objs = FALSE; \
2340 PL_in_clean_all = FALSE; \
2341 PL_profiledata = NULL; \
2343 PL_rsfp_filters = Nullav; \
2348 # ifdef MULTIPLICITY
2349 # define PERLVAR(var,type)
2350 # define PERLVARA(var,n,type)
2351 # if defined(PERL_IMPLICIT_CONTEXT)
2352 # if defined(USE_THREADS)
2353 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2354 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2355 # else /* !USE_THREADS */
2356 # define PERLVARI(var,type,init) aTHX->var = init;
2357 # define PERLVARIC(var,type,init) aTHX->var = init;
2358 # endif /* USE_THREADS */
2360 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2361 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2363 # include "intrpvar.h"
2364 # ifndef USE_THREADS
2365 # include "thrdvar.h"
2372 # define PERLVAR(var,type)
2373 # define PERLVARA(var,n,type)
2374 # define PERLVARI(var,type,init) PL_##var = init;
2375 # define PERLVARIC(var,type,init) PL_##var = init;
2376 # include "intrpvar.h"
2377 # ifndef USE_THREADS
2378 # include "thrdvar.h"
2390 S_init_main_stash(pTHX)
2395 /* Note that strtab is a rather special HV. Assumptions are made
2396 about not iterating on it, and not adding tie magic to it.
2397 It is properly deallocated in perl_destruct() */
2398 PL_strtab = newHV();
2400 MUTEX_INIT(&PL_strtab_mutex);
2402 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2403 hv_ksplit(PL_strtab, 512);
2405 PL_curstash = PL_defstash = newHV();
2406 PL_curstname = newSVpvn("main",4);
2407 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2408 SvREFCNT_dec(GvHV(gv));
2409 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2411 HvNAME(PL_defstash) = savepv("main");
2412 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2413 GvMULTI_on(PL_incgv);
2414 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2415 GvMULTI_on(PL_hintgv);
2416 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2417 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2418 GvMULTI_on(PL_errgv);
2419 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2420 GvMULTI_on(PL_replgv);
2421 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2422 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2423 sv_setpvn(ERRSV, "", 0);
2424 PL_curstash = PL_defstash;
2425 CopSTASH_set(&PL_compiling, PL_defstash);
2426 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2427 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2428 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2429 /* We must init $/ before switches are processed. */
2430 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2434 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2441 PL_origfilename = savepv("-e");
2444 /* if find_script() returns, it returns a malloc()-ed value */
2445 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2447 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2448 char *s = scriptname + 8;
2449 *fdscript = atoi(s);
2453 scriptname = savepv(s + 1);
2454 Safefree(PL_origfilename);
2455 PL_origfilename = scriptname;
2460 CopFILE_set(PL_curcop, PL_origfilename);
2461 if (strEQ(PL_origfilename,"-"))
2463 if (*fdscript >= 0) {
2464 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2465 #if defined(HAS_FCNTL) && defined(F_SETFD)
2467 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2470 else if (PL_preprocess) {
2471 char *cpp_cfg = CPPSTDIN;
2472 SV *cpp = newSVpvn("",0);
2473 SV *cmd = NEWSV(0,0);
2475 if (strEQ(cpp_cfg, "cppstdin"))
2476 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2477 sv_catpv(cpp, cpp_cfg);
2479 sv_catpvn(sv, "-I", 2);
2480 sv_catpv(sv,PRIVLIB_EXP);
2483 Perl_sv_setpvf(aTHX_ cmd, "\
2484 sed %s -e \"/^[^#]/b\" \
2485 -e \"/^#[ ]*include[ ]/b\" \
2486 -e \"/^#[ ]*define[ ]/b\" \
2487 -e \"/^#[ ]*if[ ]/b\" \
2488 -e \"/^#[ ]*ifdef[ ]/b\" \
2489 -e \"/^#[ ]*ifndef[ ]/b\" \
2490 -e \"/^#[ ]*else/b\" \
2491 -e \"/^#[ ]*elif[ ]/b\" \
2492 -e \"/^#[ ]*undef[ ]/b\" \
2493 -e \"/^#[ ]*endif/b\" \
2495 %s | %"SVf" -C %"SVf" %s",
2496 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2499 Perl_sv_setpvf(aTHX_ cmd, "\
2500 %s %s -e '/^[^#]/b' \
2501 -e '/^#[ ]*include[ ]/b' \
2502 -e '/^#[ ]*define[ ]/b' \
2503 -e '/^#[ ]*if[ ]/b' \
2504 -e '/^#[ ]*ifdef[ ]/b' \
2505 -e '/^#[ ]*ifndef[ ]/b' \
2506 -e '/^#[ ]*else/b' \
2507 -e '/^#[ ]*elif[ ]/b' \
2508 -e '/^#[ ]*undef[ ]/b' \
2509 -e '/^#[ ]*endif/b' \
2511 %s | %"SVf" %"SVf" %s",
2513 Perl_sv_setpvf(aTHX_ cmd, "\
2514 %s %s -e '/^[^#]/b' \
2515 -e '/^#[ ]*include[ ]/b' \
2516 -e '/^#[ ]*define[ ]/b' \
2517 -e '/^#[ ]*if[ ]/b' \
2518 -e '/^#[ ]*ifdef[ ]/b' \
2519 -e '/^#[ ]*ifndef[ ]/b' \
2520 -e '/^#[ ]*else/b' \
2521 -e '/^#[ ]*elif[ ]/b' \
2522 -e '/^#[ ]*undef[ ]/b' \
2523 -e '/^#[ ]*endif/b' \
2525 %s | %"SVf" -C %"SVf" %s",
2532 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2534 scriptname, cpp, sv, CPPMINUS);
2535 PL_doextract = FALSE;
2536 #ifdef IAMSUID /* actually, this is caught earlier */
2537 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2539 (void)seteuid(PL_uid); /* musn't stay setuid root */
2542 (void)setreuid((Uid_t)-1, PL_uid);
2544 #ifdef HAS_SETRESUID
2545 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2547 PerlProc_setuid(PL_uid);
2551 if (PerlProc_geteuid() != PL_uid)
2552 Perl_croak(aTHX_ "Can't do seteuid!\n");
2554 #endif /* IAMSUID */
2555 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2559 else if (!*scriptname) {
2560 forbid_setid("program input from stdin");
2561 PL_rsfp = PerlIO_stdin();
2564 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2565 #if defined(HAS_FCNTL) && defined(F_SETFD)
2567 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2572 #ifndef IAMSUID /* in case script is not readable before setuid */
2574 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2575 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2578 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2579 (int)PERL_REVISION, (int)PERL_VERSION,
2580 (int)PERL_SUBVERSION), PL_origargv);
2581 Perl_croak(aTHX_ "Can't do setuid\n");
2585 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2586 CopFILE(PL_curcop), Strerror(errno));
2591 * I_SYSSTATVFS HAS_FSTATVFS
2593 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2594 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2595 * here so that metaconfig picks them up. */
2599 S_fd_on_nosuid_fs(pTHX_ int fd)
2601 int check_okay = 0; /* able to do all the required sys/libcalls */
2602 int on_nosuid = 0; /* the fd is on a nosuid fs */
2604 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2605 * fstatvfs() is UNIX98.
2606 * fstatfs() is 4.3 BSD.
2607 * ustat()+getmnt() is pre-4.3 BSD.
2608 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2609 * an irrelevant filesystem while trying to reach the right one.
2612 # ifdef HAS_FSTATVFS
2613 struct statvfs stfs;
2614 check_okay = fstatvfs(fd, &stfs) == 0;
2615 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2617 # ifdef PERL_MOUNT_NOSUID
2618 # if defined(HAS_FSTATFS) && \
2619 defined(HAS_STRUCT_STATFS) && \
2620 defined(HAS_STRUCT_STATFS_F_FLAGS)
2622 check_okay = fstatfs(fd, &stfs) == 0;
2623 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2625 # if defined(HAS_FSTAT) && \
2626 defined(HAS_USTAT) && \
2627 defined(HAS_GETMNT) && \
2628 defined(HAS_STRUCT_FS_DATA) && \
2631 if (fstat(fd, &fdst) == 0) {
2633 if (ustat(fdst.st_dev, &us) == 0) {
2635 /* NOSTAT_ONE here because we're not examining fields which
2636 * vary between that case and STAT_ONE. */
2637 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2638 size_t cmplen = sizeof(us.f_fname);
2639 if (sizeof(fsd.fd_req.path) < cmplen)
2640 cmplen = sizeof(fsd.fd_req.path);
2641 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2642 fdst.st_dev == fsd.fd_req.dev) {
2644 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2650 # endif /* fstat+ustat+getmnt */
2651 # endif /* fstatfs */
2653 # if defined(HAS_GETMNTENT) && \
2654 defined(HAS_HASMNTOPT) && \
2655 defined(MNTOPT_NOSUID)
2656 FILE *mtab = fopen("/etc/mtab", "r");
2657 struct mntent *entry;
2658 struct stat stb, fsb;
2660 if (mtab && (fstat(fd, &stb) == 0)) {
2661 while (entry = getmntent(mtab)) {
2662 if (stat(entry->mnt_dir, &fsb) == 0
2663 && fsb.st_dev == stb.st_dev)
2665 /* found the filesystem */
2667 if (hasmntopt(entry, MNTOPT_NOSUID))
2670 } /* A single fs may well fail its stat(). */
2675 # endif /* getmntent+hasmntopt */
2676 # endif /* PERL_MOUNT_NOSUID: fstatfs or fstat+ustat+statfs */
2677 # endif /* statvfs */
2680 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2683 #endif /* IAMSUID */
2686 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2692 /* do we need to emulate setuid on scripts? */
2694 /* This code is for those BSD systems that have setuid #! scripts disabled
2695 * in the kernel because of a security problem. Merely defining DOSUID
2696 * in perl will not fix that problem, but if you have disabled setuid
2697 * scripts in the kernel, this will attempt to emulate setuid and setgid
2698 * on scripts that have those now-otherwise-useless bits set. The setuid
2699 * root version must be called suidperl or sperlN.NNN. If regular perl
2700 * discovers that it has opened a setuid script, it calls suidperl with
2701 * the same argv that it had. If suidperl finds that the script it has
2702 * just opened is NOT setuid root, it sets the effective uid back to the
2703 * uid. We don't just make perl setuid root because that loses the
2704 * effective uid we had before invoking perl, if it was different from the
2707 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2708 * be defined in suidperl only. suidperl must be setuid root. The
2709 * Configure script will set this up for you if you want it.
2716 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2717 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2718 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2723 #ifndef HAS_SETREUID
2724 /* On this access check to make sure the directories are readable,
2725 * there is actually a small window that the user could use to make
2726 * filename point to an accessible directory. So there is a faint
2727 * chance that someone could execute a setuid script down in a
2728 * non-accessible directory. I don't know what to do about that.
2729 * But I don't think it's too important. The manual lies when
2730 * it says access() is useful in setuid programs.
2732 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2733 Perl_croak(aTHX_ "Permission denied");
2735 /* If we can swap euid and uid, then we can determine access rights
2736 * with a simple stat of the file, and then compare device and
2737 * inode to make sure we did stat() on the same file we opened.
2738 * Then we just have to make sure he or she can execute it.
2741 struct stat tmpstatbuf;
2745 setreuid(PL_euid,PL_uid) < 0
2748 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2751 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2752 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2753 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2754 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2755 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2756 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2757 Perl_croak(aTHX_ "Permission denied");
2759 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2760 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2761 (void)PerlIO_close(PL_rsfp);
2762 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2763 PerlIO_printf(PL_rsfp,
2764 "User %"Uid_t_f" tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2765 (Filename of set-id script was %s, uid %"Uid_t_f" gid %"Gid_t_f".)\n\nSincerely,\nperl\n",
2766 PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2767 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
2769 PL_statbuf.st_uid, PL_statbuf.st_gid);
2770 (void)PerlProc_pclose(PL_rsfp);
2772 Perl_croak(aTHX_ "Permission denied\n");
2776 setreuid(PL_uid,PL_euid) < 0
2778 # if defined(HAS_SETRESUID)
2779 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2782 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2783 Perl_croak(aTHX_ "Can't reswap uid and euid");
2784 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2785 Perl_croak(aTHX_ "Permission denied\n");
2787 #endif /* HAS_SETREUID */
2788 #endif /* IAMSUID */
2790 if (!S_ISREG(PL_statbuf.st_mode))
2791 Perl_croak(aTHX_ "Permission denied");
2792 if (PL_statbuf.st_mode & S_IWOTH)
2793 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2794 PL_doswitches = FALSE; /* -s is insecure in suid */
2795 CopLINE_inc(PL_curcop);
2796 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2797 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2798 Perl_croak(aTHX_ "No #! line");
2799 s = SvPV(PL_linestr,n_a)+2;
2801 while (!isSPACE(*s)) s++;
2802 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2803 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2804 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2805 Perl_croak(aTHX_ "Not a perl script");
2806 while (*s == ' ' || *s == '\t') s++;
2808 * #! arg must be what we saw above. They can invoke it by
2809 * mentioning suidperl explicitly, but they may not add any strange
2810 * arguments beyond what #! says if they do invoke suidperl that way.
2812 len = strlen(validarg);
2813 if (strEQ(validarg," PHOOEY ") ||
2814 strnNE(s,validarg,len) || !isSPACE(s[len]))
2815 Perl_croak(aTHX_ "Args must match #! line");
2818 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2819 PL_euid == PL_statbuf.st_uid)
2821 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2822 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2823 #endif /* IAMSUID */
2825 if (PL_euid) { /* oops, we're not the setuid root perl */
2826 (void)PerlIO_close(PL_rsfp);
2829 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2830 (int)PERL_REVISION, (int)PERL_VERSION,
2831 (int)PERL_SUBVERSION), PL_origargv);
2833 Perl_croak(aTHX_ "Can't do setuid\n");
2836 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2838 (void)setegid(PL_statbuf.st_gid);
2841 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2843 #ifdef HAS_SETRESGID
2844 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2846 PerlProc_setgid(PL_statbuf.st_gid);
2850 if (PerlProc_getegid() != PL_statbuf.st_gid)
2851 Perl_croak(aTHX_ "Can't do setegid!\n");
2853 if (PL_statbuf.st_mode & S_ISUID) {
2854 if (PL_statbuf.st_uid != PL_euid)
2856 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2859 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2861 #ifdef HAS_SETRESUID
2862 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2864 PerlProc_setuid(PL_statbuf.st_uid);
2868 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2869 Perl_croak(aTHX_ "Can't do seteuid!\n");
2871 else if (PL_uid) { /* oops, mustn't run as root */
2873 (void)seteuid((Uid_t)PL_uid);
2876 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2878 #ifdef HAS_SETRESUID
2879 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2881 PerlProc_setuid((Uid_t)PL_uid);
2885 if (PerlProc_geteuid() != PL_uid)
2886 Perl_croak(aTHX_ "Can't do seteuid!\n");
2889 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2890 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
2893 else if (PL_preprocess)
2894 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
2895 else if (fdscript >= 0)
2896 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
2898 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
2900 /* We absolutely must clear out any saved ids here, so we */
2901 /* exec the real perl, substituting fd script for scriptname. */
2902 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2903 PerlIO_rewind(PL_rsfp);
2904 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2905 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2906 if (!PL_origargv[which])
2907 Perl_croak(aTHX_ "Permission denied");
2908 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
2909 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
2910 #if defined(HAS_FCNTL) && defined(F_SETFD)
2911 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
2913 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
2914 (int)PERL_REVISION, (int)PERL_VERSION,
2915 (int)PERL_SUBVERSION), PL_origargv);/* try again */
2916 Perl_croak(aTHX_ "Can't do setuid\n");
2917 #endif /* IAMSUID */
2919 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
2920 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
2922 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
2923 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
2925 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
2928 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2929 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2930 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
2931 /* not set-id, must be wrapped */
2937 S_find_beginning(pTHX)
2939 register char *s, *s2;
2941 /* skip forward in input to the real script? */
2944 while (PL_doextract) {
2945 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
2946 Perl_croak(aTHX_ "No Perl script found in input\n");
2947 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
2948 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
2949 PL_doextract = FALSE;
2950 while (*s && !(isSPACE (*s) || *s == '#')) s++;
2952 while (*s == ' ' || *s == '\t') s++;
2954 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
2955 if (strnEQ(s2-4,"perl",4))
2957 while ((s = moreswitches(s)))
2968 PL_uid = PerlProc_getuid();
2969 PL_euid = PerlProc_geteuid();
2970 PL_gid = PerlProc_getgid();
2971 PL_egid = PerlProc_getegid();
2973 PL_uid |= PL_gid << 16;
2974 PL_euid |= PL_egid << 16;
2976 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
2980 S_forbid_setid(pTHX_ char *s)
2982 if (PL_euid != PL_uid)
2983 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
2984 if (PL_egid != PL_gid)
2985 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
2989 Perl_init_debugger(pTHX)
2992 HV *ostash = PL_curstash;
2994 PL_curstash = PL_debstash;
2995 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
2996 AvREAL_off(PL_dbargs);
2997 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
2998 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
2999 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3000 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3001 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3002 sv_setiv(PL_DBsingle, 0);
3003 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3004 sv_setiv(PL_DBtrace, 0);
3005 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3006 sv_setiv(PL_DBsignal, 0);
3007 PL_curstash = ostash;
3010 #ifndef STRESS_REALLOC
3011 #define REASONABLE(size) (size)
3013 #define REASONABLE(size) (1) /* unreasonable */
3017 Perl_init_stacks(pTHX)
3019 /* start with 128-item stack and 8K cxstack */
3020 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3021 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3022 PL_curstackinfo->si_type = PERLSI_MAIN;
3023 PL_curstack = PL_curstackinfo->si_stack;
3024 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3026 PL_stack_base = AvARRAY(PL_curstack);
3027 PL_stack_sp = PL_stack_base;
3028 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3030 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3033 PL_tmps_max = REASONABLE(128);
3035 New(54,PL_markstack,REASONABLE(32),I32);
3036 PL_markstack_ptr = PL_markstack;
3037 PL_markstack_max = PL_markstack + REASONABLE(32);
3041 New(54,PL_scopestack,REASONABLE(32),I32);
3042 PL_scopestack_ix = 0;
3043 PL_scopestack_max = REASONABLE(32);
3045 New(54,PL_savestack,REASONABLE(128),ANY);
3046 PL_savestack_ix = 0;
3047 PL_savestack_max = REASONABLE(128);
3049 New(54,PL_retstack,REASONABLE(16),OP*);
3051 PL_retstack_max = REASONABLE(16);
3060 while (PL_curstackinfo->si_next)
3061 PL_curstackinfo = PL_curstackinfo->si_next;
3062 while (PL_curstackinfo) {
3063 PERL_SI *p = PL_curstackinfo->si_prev;
3064 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3065 Safefree(PL_curstackinfo->si_cxstack);
3066 Safefree(PL_curstackinfo);
3067 PL_curstackinfo = p;
3069 Safefree(PL_tmps_stack);
3070 Safefree(PL_markstack);
3071 Safefree(PL_scopestack);
3072 Safefree(PL_savestack);
3073 Safefree(PL_retstack);
3077 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3088 lex_start(PL_linestr);
3090 PL_subname = newSVpvn("main",4);
3094 S_init_predump_symbols(pTHX)
3100 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3101 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3102 GvMULTI_on(PL_stdingv);
3103 io = GvIOp(PL_stdingv);
3104 IoIFP(io) = PerlIO_stdin();
3105 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3107 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3109 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3112 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3114 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3116 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3118 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3119 GvMULTI_on(PL_stderrgv);
3120 io = GvIOp(PL_stderrgv);
3121 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3122 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3124 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3126 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3129 PL_osname = savepv(OSNAME);
3133 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3140 argc--,argv++; /* skip name of script */
3141 if (PL_doswitches) {
3142 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3145 if (argv[0][1] == '-' && !argv[0][2]) {
3149 if ((s = strchr(argv[0], '='))) {
3151 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3154 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3157 PL_toptarget = NEWSV(0,0);
3158 sv_upgrade(PL_toptarget, SVt_PVFM);
3159 sv_setpvn(PL_toptarget, "", 0);
3160 PL_bodytarget = NEWSV(0,0);
3161 sv_upgrade(PL_bodytarget, SVt_PVFM);
3162 sv_setpvn(PL_bodytarget, "", 0);
3163 PL_formtarget = PL_bodytarget;
3166 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3167 sv_setpv(GvSV(tmpgv),PL_origfilename);
3168 magicname("0", "0", 1);
3170 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3172 sv_setpv(GvSV(tmpgv), os2_execname());
3174 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3176 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3177 GvMULTI_on(PL_argvgv);
3178 (void)gv_AVadd(PL_argvgv);
3179 av_clear(GvAVn(PL_argvgv));
3180 for (; argc > 0; argc--,argv++) {
3181 SV *sv = newSVpv(argv[0],0);
3182 av_push(GvAVn(PL_argvgv),sv);
3183 if (PL_widesyscalls)
3184 sv_utf8_upgrade(sv);
3187 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3189 GvMULTI_on(PL_envgv);
3190 hv = GvHVn(PL_envgv);
3191 hv_magic(hv, PL_envgv, 'E');
3192 #if !defined( VMS) && !defined(EPOC) /* VMS doesn't have environ array */
3193 /* Note that if the supplied env parameter is actually a copy
3194 of the global environ then it may now point to free'd memory
3195 if the environment has been modified since. To avoid this
3196 problem we treat env==NULL as meaning 'use the default'
3201 environ[0] = Nullch;
3202 for (; *env; env++) {
3203 if (!(s = strchr(*env,'=')))
3209 sv = newSVpv(s--,0);
3210 (void)hv_store(hv, *env, s - *env, sv, 0);
3212 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3213 /* Sins of the RTL. See note in my_setenv(). */
3214 (void)PerlEnv_putenv(savepv(*env));
3218 #ifdef DYNAMIC_ENV_FETCH
3219 HvNAME(hv) = savepv(ENV_HV_NAME);
3223 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3224 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3228 S_init_perllib(pTHX)
3233 s = PerlEnv_getenv("PERL5LIB");
3235 incpush(s, TRUE, TRUE);
3237 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3239 /* Treat PERL5?LIB as a possible search list logical name -- the
3240 * "natural" VMS idiom for a Unix path string. We allow each
3241 * element to be a set of |-separated directories for compatibility.
3245 if (my_trnlnm("PERL5LIB",buf,0))
3246 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3248 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3252 /* Use the ~-expanded versions of APPLLIB (undocumented),
3253 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3256 incpush(APPLLIB_EXP, TRUE, TRUE);
3260 incpush(ARCHLIB_EXP, FALSE, FALSE);
3263 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3266 incpush(PRIVLIB_EXP, TRUE, FALSE);
3268 incpush(PRIVLIB_EXP, FALSE, FALSE);
3272 /* sitearch is always relative to sitelib on Windows for
3273 * DLL-based path intuition to work correctly */
3274 # if !defined(WIN32)
3275 incpush(SITEARCH_EXP, FALSE, FALSE);
3281 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3283 incpush(SITELIB_EXP, FALSE, FALSE);
3287 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3288 incpush(SITELIB_STEM, FALSE, TRUE);
3291 #ifdef PERL_VENDORARCH_EXP
3292 /* vendorarch is always relative to vendorlib on Windows for
3293 * DLL-based path intuition to work correctly */
3294 # if !defined(WIN32)
3295 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3299 #ifdef PERL_VENDORLIB_EXP
3301 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3303 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3307 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3308 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3312 incpush(".", FALSE, FALSE);
3316 # define PERLLIB_SEP ';'
3319 # define PERLLIB_SEP '|'
3321 # define PERLLIB_SEP ':'
3324 #ifndef PERLLIB_MANGLE
3325 # define PERLLIB_MANGLE(s,n) (s)
3329 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3331 SV *subdir = Nullsv;
3336 if (addsubdirs || addoldvers) {
3337 subdir = sv_newmortal();
3340 /* Break at all separators */
3342 SV *libdir = NEWSV(55,0);
3345 /* skip any consecutive separators */
3346 while ( *p == PERLLIB_SEP ) {
3347 /* Uncomment the next line for PATH semantics */
3348 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3352 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3353 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3358 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3359 p = Nullch; /* break out */
3363 * BEFORE pushing libdir onto @INC we may first push version- and
3364 * archname-specific sub-directories.
3366 if (addsubdirs || addoldvers) {
3367 #ifdef PERL_INC_VERSION_LIST
3368 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3369 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3370 const char **incver;
3372 struct stat tmpstatbuf;
3377 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3379 while (unix[len-1] == '/') len--; /* Cosmetic */
3380 sv_usepvn(libdir,unix,len);
3383 PerlIO_printf(Perl_error_log,
3384 "Failed to unixify @INC element \"%s\"\n",
3388 /* .../version/archname if -d .../version/archname */
3389 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/"PERL_FS_VER_FMT"/%s",
3391 (int)PERL_REVISION, (int)PERL_VERSION,
3392 (int)PERL_SUBVERSION, ARCHNAME);
3393 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3394 S_ISDIR(tmpstatbuf.st_mode))
3395 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3397 /* .../version if -d .../version */
3398 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/"PERL_FS_VER_FMT, libdir,
3399 (int)PERL_REVISION, (int)PERL_VERSION,
3400 (int)PERL_SUBVERSION);
3401 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3402 S_ISDIR(tmpstatbuf.st_mode))
3403 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3405 /* .../archname if -d .../archname */
3406 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/%s", libdir, ARCHNAME);
3407 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3408 S_ISDIR(tmpstatbuf.st_mode))
3409 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3412 #ifdef PERL_INC_VERSION_LIST
3414 for (incver = incverlist; *incver; incver++) {
3415 /* .../xxx if -d .../xxx */
3416 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/%s", libdir, *incver);
3417 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3418 S_ISDIR(tmpstatbuf.st_mode))
3419 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3425 /* finally push this lib directory on the end of @INC */
3426 av_push(GvAVn(PL_incgv), libdir);
3431 STATIC struct perl_thread *
3432 S_init_main_thread(pTHX)
3434 #if !defined(PERL_IMPLICIT_CONTEXT)
3435 struct perl_thread *thr;
3439 Newz(53, thr, 1, struct perl_thread);
3440 PL_curcop = &PL_compiling;
3441 thr->interp = PERL_GET_INTERP;
3442 thr->cvcache = newHV();
3443 thr->threadsv = newAV();
3444 /* thr->threadsvp is set when find_threadsv is called */
3445 thr->specific = newAV();
3446 thr->flags = THRf_R_JOINABLE;
3447 MUTEX_INIT(&thr->mutex);
3448 /* Handcraft thrsv similarly to mess_sv */
3449 New(53, PL_thrsv, 1, SV);
3450 Newz(53, xpv, 1, XPV);
3451 SvFLAGS(PL_thrsv) = SVt_PV;
3452 SvANY(PL_thrsv) = (void*)xpv;
3453 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3454 SvPVX(PL_thrsv) = (char*)thr;
3455 SvCUR_set(PL_thrsv, sizeof(thr));
3456 SvLEN_set(PL_thrsv, sizeof(thr));
3457 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3458 thr->oursv = PL_thrsv;
3459 PL_chopset = " \n-";
3462 MUTEX_LOCK(&PL_threads_mutex);
3467 MUTEX_UNLOCK(&PL_threads_mutex);
3469 #ifdef HAVE_THREAD_INTERN
3470 Perl_init_thread_intern(thr);
3473 #ifdef SET_THREAD_SELF
3474 SET_THREAD_SELF(thr);
3476 thr->self = pthread_self();
3477 #endif /* SET_THREAD_SELF */
3481 * These must come after the SET_THR because sv_setpvn does
3482 * SvTAINT and the taint fields require dTHR.
3484 PL_toptarget = NEWSV(0,0);
3485 sv_upgrade(PL_toptarget, SVt_PVFM);
3486 sv_setpvn(PL_toptarget, "", 0);
3487 PL_bodytarget = NEWSV(0,0);
3488 sv_upgrade(PL_bodytarget, SVt_PVFM);
3489 sv_setpvn(PL_bodytarget, "", 0);
3490 PL_formtarget = PL_bodytarget;
3491 thr->errsv = newSVpvn("", 0);
3492 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3495 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3496 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3497 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3498 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3499 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3501 PL_reginterp_cnt = 0;
3505 #endif /* USE_THREADS */
3508 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3512 line_t oldline = CopLINE(PL_curcop);
3518 while (AvFILL(paramList) >= 0) {
3519 cv = (CV*)av_shift(paramList);
3521 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3522 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3528 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3532 (void)SvPV(atsv, len);
3535 PL_curcop = &PL_compiling;
3536 CopLINE_set(PL_curcop, oldline);
3537 if (paramList == PL_beginav)
3538 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3540 Perl_sv_catpvf(aTHX_ atsv,
3541 "%s failed--call queue aborted",
3542 paramList == PL_checkav ? "CHECK"
3543 : paramList == PL_initav ? "INIT"
3545 while (PL_scopestack_ix > oldscope)
3548 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3555 /* my_exit() was called */
3556 while (PL_scopestack_ix > oldscope)
3559 PL_curstash = PL_defstash;
3560 PL_curcop = &PL_compiling;
3561 CopLINE_set(PL_curcop, oldline);
3563 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3564 if (paramList == PL_beginav)
3565 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3567 Perl_croak(aTHX_ "%s failed--call queue aborted",
3568 paramList == PL_checkav ? "CHECK"
3569 : paramList == PL_initav ? "INIT"
3576 PL_curcop = &PL_compiling;
3577 CopLINE_set(PL_curcop, oldline);
3580 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3588 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3590 S_vcall_list_body(pTHX_ va_list args)
3592 CV *cv = va_arg(args, CV*);
3593 return call_list_body(cv);
3598 S_call_list_body(pTHX_ CV *cv)
3600 PUSHMARK(PL_stack_sp);
3601 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3606 Perl_my_exit(pTHX_ U32 status)
3610 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3611 thr, (unsigned long) status));
3620 STATUS_NATIVE_SET(status);
3627 Perl_my_failure_exit(pTHX)
3630 if (vaxc$errno & 1) {
3631 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3632 STATUS_NATIVE_SET(44);
3635 if (!vaxc$errno && errno) /* unlikely */
3636 STATUS_NATIVE_SET(44);
3638 STATUS_NATIVE_SET(vaxc$errno);
3643 STATUS_POSIX_SET(errno);
3645 exitstatus = STATUS_POSIX >> 8;
3646 if (exitstatus & 255)
3647 STATUS_POSIX_SET(exitstatus);
3649 STATUS_POSIX_SET(255);
3656 S_my_exit_jump(pTHX)
3659 register PERL_CONTEXT *cx;
3664 SvREFCNT_dec(PL_e_script);
3665 PL_e_script = Nullsv;
3668 POPSTACK_TO(PL_mainstack);
3669 if (cxstack_ix >= 0) {
3672 POPBLOCK(cx,PL_curpm);
3684 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3687 p = SvPVX(PL_e_script);
3688 nl = strchr(p, '\n');
3689 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3691 filter_del(read_e_script);
3694 sv_catpvn(buf_sv, p, nl-p);
3695 sv_chop(PL_e_script, nl);