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, " ()");
2139 Perl_croak(aTHX_ "Module name required with -M option");
2140 sv_catpvn(sv, start, s-start);
2141 sv_catpv(sv, " split(/,/,q{");
2147 PL_preambleav = newAV();
2148 av_push(PL_preambleav, sv);
2151 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2163 PL_doswitches = TRUE;
2168 Perl_croak(aTHX_ "Too late for \"-T\" option");
2172 PL_do_undump = TRUE;
2180 printf(Perl_form(aTHX_ "\nThis is perl, v%vd built for %s",
2181 PL_patchlevel, ARCHNAME));
2182 #if defined(LOCAL_PATCH_COUNT)
2183 if (LOCAL_PATCH_COUNT > 0)
2184 printf("\n(with %d registered patch%s, see perl -V for more detail)",
2185 (int)LOCAL_PATCH_COUNT, (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2188 printf("\n\nCopyright 1987-2000, Larry Wall\n");
2190 printf("\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2193 printf("djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n");
2194 printf("djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2197 printf("\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2198 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2201 printf("atariST series port, ++jrb bammi@cadence.com\n");
2204 printf("BeOS port Copyright Tom Spindler, 1997-1999\n");
2207 printf("MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
2210 printf("MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2213 printf("Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2216 printf("VM/ESA port by Neale Ferguson, 1998-1999\n");
2219 printf("BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2222 printf("MiNT port by Guido Flohr, 1997-1999\n");
2225 printf("EPOC port by Olaf Flebbe, 1999-2000\n");
2227 #ifdef BINARY_BUILD_NOTICE
2228 BINARY_BUILD_NOTICE;
2231 Perl may be copied only under the terms of either the Artistic License or the\n\
2232 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
2233 Complete documentation for Perl, including FAQ lists, should be found on\n\
2234 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2235 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2238 if (! (PL_dowarn & G_WARN_ALL_MASK))
2239 PL_dowarn |= G_WARN_ON;
2243 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2244 PL_compiling.cop_warnings = pWARN_ALL ;
2248 PL_dowarn = G_WARN_ALL_OFF;
2249 PL_compiling.cop_warnings = pWARN_NONE ;
2254 if (s[1] == '-') /* Additional switches on #! line. */
2259 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2265 #ifdef ALTERNATE_SHEBANG
2266 case 'S': /* OS/2 needs -S on "extproc" line. */
2274 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2279 /* compliments of Tom Christiansen */
2281 /* unexec() can be found in the Gnu emacs distribution */
2282 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2285 Perl_my_unexec(pTHX)
2293 prog = newSVpv(BIN_EXP, 0);
2294 sv_catpv(prog, "/perl");
2295 file = newSVpv(PL_origfilename, 0);
2296 sv_catpv(file, ".perldump");
2298 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2299 /* unexec prints msg to stderr in case of failure */
2300 PerlProc_exit(status);
2303 # include <lib$routines.h>
2304 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2306 ABORT(); /* for use with undump */
2311 /* initialize curinterp */
2316 #ifdef PERL_OBJECT /* XXX kludge */
2319 PL_chopset = " \n-"; \
2320 PL_copline = NOLINE; \
2321 PL_curcop = &PL_compiling;\
2322 PL_curcopdb = NULL; \
2324 PL_dumpindent = 4; \
2325 PL_laststatval = -1; \
2326 PL_laststype = OP_STAT; \
2327 PL_maxscream = -1; \
2328 PL_maxsysfd = MAXSYSFD; \
2329 PL_statname = Nullsv; \
2330 PL_tmps_floor = -1; \
2332 PL_op_mask = NULL; \
2333 PL_laststatval = -1; \
2334 PL_laststype = OP_STAT; \
2335 PL_mess_sv = Nullsv; \
2336 PL_splitstr = " "; \
2337 PL_generation = 100; \
2338 PL_exitlist = NULL; \
2339 PL_exitlistlen = 0; \
2341 PL_in_clean_objs = FALSE; \
2342 PL_in_clean_all = FALSE; \
2343 PL_profiledata = NULL; \
2345 PL_rsfp_filters = Nullav; \
2350 # ifdef MULTIPLICITY
2351 # define PERLVAR(var,type)
2352 # define PERLVARA(var,n,type)
2353 # if defined(PERL_IMPLICIT_CONTEXT)
2354 # if defined(USE_THREADS)
2355 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2356 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2357 # else /* !USE_THREADS */
2358 # define PERLVARI(var,type,init) aTHX->var = init;
2359 # define PERLVARIC(var,type,init) aTHX->var = init;
2360 # endif /* USE_THREADS */
2362 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2363 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2365 # include "intrpvar.h"
2366 # ifndef USE_THREADS
2367 # include "thrdvar.h"
2374 # define PERLVAR(var,type)
2375 # define PERLVARA(var,n,type)
2376 # define PERLVARI(var,type,init) PL_##var = init;
2377 # define PERLVARIC(var,type,init) PL_##var = init;
2378 # include "intrpvar.h"
2379 # ifndef USE_THREADS
2380 # include "thrdvar.h"
2392 S_init_main_stash(pTHX)
2397 /* Note that strtab is a rather special HV. Assumptions are made
2398 about not iterating on it, and not adding tie magic to it.
2399 It is properly deallocated in perl_destruct() */
2400 PL_strtab = newHV();
2402 MUTEX_INIT(&PL_strtab_mutex);
2404 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2405 hv_ksplit(PL_strtab, 512);
2407 PL_curstash = PL_defstash = newHV();
2408 PL_curstname = newSVpvn("main",4);
2409 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2410 SvREFCNT_dec(GvHV(gv));
2411 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2413 HvNAME(PL_defstash) = savepv("main");
2414 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2415 GvMULTI_on(PL_incgv);
2416 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2417 GvMULTI_on(PL_hintgv);
2418 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2419 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2420 GvMULTI_on(PL_errgv);
2421 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2422 GvMULTI_on(PL_replgv);
2423 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2424 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2425 sv_setpvn(ERRSV, "", 0);
2426 PL_curstash = PL_defstash;
2427 CopSTASH_set(&PL_compiling, PL_defstash);
2428 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2429 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2430 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2431 /* We must init $/ before switches are processed. */
2432 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2436 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2443 PL_origfilename = savepv("-e");
2446 /* if find_script() returns, it returns a malloc()-ed value */
2447 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2449 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2450 char *s = scriptname + 8;
2451 *fdscript = atoi(s);
2455 scriptname = savepv(s + 1);
2456 Safefree(PL_origfilename);
2457 PL_origfilename = scriptname;
2462 CopFILE_set(PL_curcop, PL_origfilename);
2463 if (strEQ(PL_origfilename,"-"))
2465 if (*fdscript >= 0) {
2466 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2467 #if defined(HAS_FCNTL) && defined(F_SETFD)
2469 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2472 else if (PL_preprocess) {
2473 char *cpp_cfg = CPPSTDIN;
2474 SV *cpp = newSVpvn("",0);
2475 SV *cmd = NEWSV(0,0);
2477 if (strEQ(cpp_cfg, "cppstdin"))
2478 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2479 sv_catpv(cpp, cpp_cfg);
2481 sv_catpvn(sv, "-I", 2);
2482 sv_catpv(sv,PRIVLIB_EXP);
2485 Perl_sv_setpvf(aTHX_ cmd, "\
2486 sed %s -e \"/^[^#]/b\" \
2487 -e \"/^#[ ]*include[ ]/b\" \
2488 -e \"/^#[ ]*define[ ]/b\" \
2489 -e \"/^#[ ]*if[ ]/b\" \
2490 -e \"/^#[ ]*ifdef[ ]/b\" \
2491 -e \"/^#[ ]*ifndef[ ]/b\" \
2492 -e \"/^#[ ]*else/b\" \
2493 -e \"/^#[ ]*elif[ ]/b\" \
2494 -e \"/^#[ ]*undef[ ]/b\" \
2495 -e \"/^#[ ]*endif/b\" \
2497 %s | %"SVf" -C %"SVf" %s",
2498 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2501 Perl_sv_setpvf(aTHX_ cmd, "\
2502 %s %s -e '/^[^#]/b' \
2503 -e '/^#[ ]*include[ ]/b' \
2504 -e '/^#[ ]*define[ ]/b' \
2505 -e '/^#[ ]*if[ ]/b' \
2506 -e '/^#[ ]*ifdef[ ]/b' \
2507 -e '/^#[ ]*ifndef[ ]/b' \
2508 -e '/^#[ ]*else/b' \
2509 -e '/^#[ ]*elif[ ]/b' \
2510 -e '/^#[ ]*undef[ ]/b' \
2511 -e '/^#[ ]*endif/b' \
2513 %s | %"SVf" %"SVf" %s",
2515 Perl_sv_setpvf(aTHX_ cmd, "\
2516 %s %s -e '/^[^#]/b' \
2517 -e '/^#[ ]*include[ ]/b' \
2518 -e '/^#[ ]*define[ ]/b' \
2519 -e '/^#[ ]*if[ ]/b' \
2520 -e '/^#[ ]*ifdef[ ]/b' \
2521 -e '/^#[ ]*ifndef[ ]/b' \
2522 -e '/^#[ ]*else/b' \
2523 -e '/^#[ ]*elif[ ]/b' \
2524 -e '/^#[ ]*undef[ ]/b' \
2525 -e '/^#[ ]*endif/b' \
2527 %s | %"SVf" -C %"SVf" %s",
2534 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2536 scriptname, cpp, sv, CPPMINUS);
2537 PL_doextract = FALSE;
2538 #ifdef IAMSUID /* actually, this is caught earlier */
2539 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2541 (void)seteuid(PL_uid); /* musn't stay setuid root */
2544 (void)setreuid((Uid_t)-1, PL_uid);
2546 #ifdef HAS_SETRESUID
2547 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2549 PerlProc_setuid(PL_uid);
2553 if (PerlProc_geteuid() != PL_uid)
2554 Perl_croak(aTHX_ "Can't do seteuid!\n");
2556 #endif /* IAMSUID */
2557 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2561 else if (!*scriptname) {
2562 forbid_setid("program input from stdin");
2563 PL_rsfp = PerlIO_stdin();
2566 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2567 #if defined(HAS_FCNTL) && defined(F_SETFD)
2569 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2574 #ifndef IAMSUID /* in case script is not readable before setuid */
2576 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2577 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2580 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2581 (int)PERL_REVISION, (int)PERL_VERSION,
2582 (int)PERL_SUBVERSION), PL_origargv);
2583 Perl_croak(aTHX_ "Can't do setuid\n");
2587 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2588 CopFILE(PL_curcop), Strerror(errno));
2593 * I_SYSSTATVFS HAS_FSTATVFS
2595 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2596 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2597 * here so that metaconfig picks them up. */
2601 S_fd_on_nosuid_fs(pTHX_ int fd)
2603 int check_okay = 0; /* able to do all the required sys/libcalls */
2604 int on_nosuid = 0; /* the fd is on a nosuid fs */
2606 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2607 * fstatvfs() is UNIX98.
2608 * fstatfs() is 4.3 BSD.
2609 * ustat()+getmnt() is pre-4.3 BSD.
2610 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2611 * an irrelevant filesystem while trying to reach the right one.
2614 # ifdef HAS_FSTATVFS
2615 struct statvfs stfs;
2616 check_okay = fstatvfs(fd, &stfs) == 0;
2617 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2619 # ifdef PERL_MOUNT_NOSUID
2620 # if defined(HAS_FSTATFS) && \
2621 defined(HAS_STRUCT_STATFS) && \
2622 defined(HAS_STRUCT_STATFS_F_FLAGS)
2624 check_okay = fstatfs(fd, &stfs) == 0;
2625 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2627 # if defined(HAS_FSTAT) && \
2628 defined(HAS_USTAT) && \
2629 defined(HAS_GETMNT) && \
2630 defined(HAS_STRUCT_FS_DATA) && \
2633 if (fstat(fd, &fdst) == 0) {
2635 if (ustat(fdst.st_dev, &us) == 0) {
2637 /* NOSTAT_ONE here because we're not examining fields which
2638 * vary between that case and STAT_ONE. */
2639 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2640 size_t cmplen = sizeof(us.f_fname);
2641 if (sizeof(fsd.fd_req.path) < cmplen)
2642 cmplen = sizeof(fsd.fd_req.path);
2643 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2644 fdst.st_dev == fsd.fd_req.dev) {
2646 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2652 # endif /* fstat+ustat+getmnt */
2653 # endif /* fstatfs */
2655 # if defined(HAS_GETMNTENT) && \
2656 defined(HAS_HASMNTOPT) && \
2657 defined(MNTOPT_NOSUID)
2658 FILE *mtab = fopen("/etc/mtab", "r");
2659 struct mntent *entry;
2660 struct stat stb, fsb;
2662 if (mtab && (fstat(fd, &stb) == 0)) {
2663 while (entry = getmntent(mtab)) {
2664 if (stat(entry->mnt_dir, &fsb) == 0
2665 && fsb.st_dev == stb.st_dev)
2667 /* found the filesystem */
2669 if (hasmntopt(entry, MNTOPT_NOSUID))
2672 } /* A single fs may well fail its stat(). */
2677 # endif /* getmntent+hasmntopt */
2678 # endif /* PERL_MOUNT_NOSUID: fstatfs or fstat+ustat+statfs */
2679 # endif /* statvfs */
2682 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2685 #endif /* IAMSUID */
2688 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2694 /* do we need to emulate setuid on scripts? */
2696 /* This code is for those BSD systems that have setuid #! scripts disabled
2697 * in the kernel because of a security problem. Merely defining DOSUID
2698 * in perl will not fix that problem, but if you have disabled setuid
2699 * scripts in the kernel, this will attempt to emulate setuid and setgid
2700 * on scripts that have those now-otherwise-useless bits set. The setuid
2701 * root version must be called suidperl or sperlN.NNN. If regular perl
2702 * discovers that it has opened a setuid script, it calls suidperl with
2703 * the same argv that it had. If suidperl finds that the script it has
2704 * just opened is NOT setuid root, it sets the effective uid back to the
2705 * uid. We don't just make perl setuid root because that loses the
2706 * effective uid we had before invoking perl, if it was different from the
2709 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2710 * be defined in suidperl only. suidperl must be setuid root. The
2711 * Configure script will set this up for you if you want it.
2718 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2719 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2720 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2725 #ifndef HAS_SETREUID
2726 /* On this access check to make sure the directories are readable,
2727 * there is actually a small window that the user could use to make
2728 * filename point to an accessible directory. So there is a faint
2729 * chance that someone could execute a setuid script down in a
2730 * non-accessible directory. I don't know what to do about that.
2731 * But I don't think it's too important. The manual lies when
2732 * it says access() is useful in setuid programs.
2734 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2735 Perl_croak(aTHX_ "Permission denied");
2737 /* If we can swap euid and uid, then we can determine access rights
2738 * with a simple stat of the file, and then compare device and
2739 * inode to make sure we did stat() on the same file we opened.
2740 * Then we just have to make sure he or she can execute it.
2743 struct stat tmpstatbuf;
2747 setreuid(PL_euid,PL_uid) < 0
2750 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2753 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2754 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2755 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2756 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2757 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2758 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2759 Perl_croak(aTHX_ "Permission denied");
2761 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2762 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2763 (void)PerlIO_close(PL_rsfp);
2764 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2765 PerlIO_printf(PL_rsfp,
2766 "User %"Uid_t_f" tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2767 (Filename of set-id script was %s, uid %"Uid_t_f" gid %"Gid_t_f".)\n\nSincerely,\nperl\n",
2768 PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2769 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
2771 PL_statbuf.st_uid, PL_statbuf.st_gid);
2772 (void)PerlProc_pclose(PL_rsfp);
2774 Perl_croak(aTHX_ "Permission denied\n");
2778 setreuid(PL_uid,PL_euid) < 0
2780 # if defined(HAS_SETRESUID)
2781 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2784 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2785 Perl_croak(aTHX_ "Can't reswap uid and euid");
2786 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2787 Perl_croak(aTHX_ "Permission denied\n");
2789 #endif /* HAS_SETREUID */
2790 #endif /* IAMSUID */
2792 if (!S_ISREG(PL_statbuf.st_mode))
2793 Perl_croak(aTHX_ "Permission denied");
2794 if (PL_statbuf.st_mode & S_IWOTH)
2795 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2796 PL_doswitches = FALSE; /* -s is insecure in suid */
2797 CopLINE_inc(PL_curcop);
2798 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2799 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2800 Perl_croak(aTHX_ "No #! line");
2801 s = SvPV(PL_linestr,n_a)+2;
2803 while (!isSPACE(*s)) s++;
2804 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2805 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2806 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2807 Perl_croak(aTHX_ "Not a perl script");
2808 while (*s == ' ' || *s == '\t') s++;
2810 * #! arg must be what we saw above. They can invoke it by
2811 * mentioning suidperl explicitly, but they may not add any strange
2812 * arguments beyond what #! says if they do invoke suidperl that way.
2814 len = strlen(validarg);
2815 if (strEQ(validarg," PHOOEY ") ||
2816 strnNE(s,validarg,len) || !isSPACE(s[len]))
2817 Perl_croak(aTHX_ "Args must match #! line");
2820 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2821 PL_euid == PL_statbuf.st_uid)
2823 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2824 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2825 #endif /* IAMSUID */
2827 if (PL_euid) { /* oops, we're not the setuid root perl */
2828 (void)PerlIO_close(PL_rsfp);
2831 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2832 (int)PERL_REVISION, (int)PERL_VERSION,
2833 (int)PERL_SUBVERSION), PL_origargv);
2835 Perl_croak(aTHX_ "Can't do setuid\n");
2838 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2840 (void)setegid(PL_statbuf.st_gid);
2843 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2845 #ifdef HAS_SETRESGID
2846 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2848 PerlProc_setgid(PL_statbuf.st_gid);
2852 if (PerlProc_getegid() != PL_statbuf.st_gid)
2853 Perl_croak(aTHX_ "Can't do setegid!\n");
2855 if (PL_statbuf.st_mode & S_ISUID) {
2856 if (PL_statbuf.st_uid != PL_euid)
2858 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2861 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2863 #ifdef HAS_SETRESUID
2864 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2866 PerlProc_setuid(PL_statbuf.st_uid);
2870 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2871 Perl_croak(aTHX_ "Can't do seteuid!\n");
2873 else if (PL_uid) { /* oops, mustn't run as root */
2875 (void)seteuid((Uid_t)PL_uid);
2878 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2880 #ifdef HAS_SETRESUID
2881 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2883 PerlProc_setuid((Uid_t)PL_uid);
2887 if (PerlProc_geteuid() != PL_uid)
2888 Perl_croak(aTHX_ "Can't do seteuid!\n");
2891 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2892 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
2895 else if (PL_preprocess)
2896 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
2897 else if (fdscript >= 0)
2898 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
2900 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
2902 /* We absolutely must clear out any saved ids here, so we */
2903 /* exec the real perl, substituting fd script for scriptname. */
2904 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2905 PerlIO_rewind(PL_rsfp);
2906 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2907 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2908 if (!PL_origargv[which])
2909 Perl_croak(aTHX_ "Permission denied");
2910 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
2911 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
2912 #if defined(HAS_FCNTL) && defined(F_SETFD)
2913 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
2915 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
2916 (int)PERL_REVISION, (int)PERL_VERSION,
2917 (int)PERL_SUBVERSION), PL_origargv);/* try again */
2918 Perl_croak(aTHX_ "Can't do setuid\n");
2919 #endif /* IAMSUID */
2921 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
2922 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
2924 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
2925 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
2927 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
2930 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2931 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2932 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
2933 /* not set-id, must be wrapped */
2939 S_find_beginning(pTHX)
2941 register char *s, *s2;
2943 /* skip forward in input to the real script? */
2946 while (PL_doextract) {
2947 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
2948 Perl_croak(aTHX_ "No Perl script found in input\n");
2949 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
2950 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
2951 PL_doextract = FALSE;
2952 while (*s && !(isSPACE (*s) || *s == '#')) s++;
2954 while (*s == ' ' || *s == '\t') s++;
2956 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
2957 if (strnEQ(s2-4,"perl",4))
2959 while ((s = moreswitches(s)))
2970 PL_uid = PerlProc_getuid();
2971 PL_euid = PerlProc_geteuid();
2972 PL_gid = PerlProc_getgid();
2973 PL_egid = PerlProc_getegid();
2975 PL_uid |= PL_gid << 16;
2976 PL_euid |= PL_egid << 16;
2978 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
2982 S_forbid_setid(pTHX_ char *s)
2984 if (PL_euid != PL_uid)
2985 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
2986 if (PL_egid != PL_gid)
2987 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
2991 Perl_init_debugger(pTHX)
2994 HV *ostash = PL_curstash;
2996 PL_curstash = PL_debstash;
2997 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
2998 AvREAL_off(PL_dbargs);
2999 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3000 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3001 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3002 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3003 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3004 sv_setiv(PL_DBsingle, 0);
3005 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3006 sv_setiv(PL_DBtrace, 0);
3007 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3008 sv_setiv(PL_DBsignal, 0);
3009 PL_curstash = ostash;
3012 #ifndef STRESS_REALLOC
3013 #define REASONABLE(size) (size)
3015 #define REASONABLE(size) (1) /* unreasonable */
3019 Perl_init_stacks(pTHX)
3021 /* start with 128-item stack and 8K cxstack */
3022 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3023 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3024 PL_curstackinfo->si_type = PERLSI_MAIN;
3025 PL_curstack = PL_curstackinfo->si_stack;
3026 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3028 PL_stack_base = AvARRAY(PL_curstack);
3029 PL_stack_sp = PL_stack_base;
3030 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3032 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3035 PL_tmps_max = REASONABLE(128);
3037 New(54,PL_markstack,REASONABLE(32),I32);
3038 PL_markstack_ptr = PL_markstack;
3039 PL_markstack_max = PL_markstack + REASONABLE(32);
3043 New(54,PL_scopestack,REASONABLE(32),I32);
3044 PL_scopestack_ix = 0;
3045 PL_scopestack_max = REASONABLE(32);
3047 New(54,PL_savestack,REASONABLE(128),ANY);
3048 PL_savestack_ix = 0;
3049 PL_savestack_max = REASONABLE(128);
3051 New(54,PL_retstack,REASONABLE(16),OP*);
3053 PL_retstack_max = REASONABLE(16);
3062 while (PL_curstackinfo->si_next)
3063 PL_curstackinfo = PL_curstackinfo->si_next;
3064 while (PL_curstackinfo) {
3065 PERL_SI *p = PL_curstackinfo->si_prev;
3066 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3067 Safefree(PL_curstackinfo->si_cxstack);
3068 Safefree(PL_curstackinfo);
3069 PL_curstackinfo = p;
3071 Safefree(PL_tmps_stack);
3072 Safefree(PL_markstack);
3073 Safefree(PL_scopestack);
3074 Safefree(PL_savestack);
3075 Safefree(PL_retstack);
3079 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3090 lex_start(PL_linestr);
3092 PL_subname = newSVpvn("main",4);
3096 S_init_predump_symbols(pTHX)
3102 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3103 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3104 GvMULTI_on(PL_stdingv);
3105 io = GvIOp(PL_stdingv);
3106 IoIFP(io) = PerlIO_stdin();
3107 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3109 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3111 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3114 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3116 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3118 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3120 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3121 GvMULTI_on(PL_stderrgv);
3122 io = GvIOp(PL_stderrgv);
3123 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3124 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3126 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3128 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3131 PL_osname = savepv(OSNAME);
3135 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3142 argc--,argv++; /* skip name of script */
3143 if (PL_doswitches) {
3144 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3147 if (argv[0][1] == '-' && !argv[0][2]) {
3151 if ((s = strchr(argv[0], '='))) {
3153 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3156 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3159 PL_toptarget = NEWSV(0,0);
3160 sv_upgrade(PL_toptarget, SVt_PVFM);
3161 sv_setpvn(PL_toptarget, "", 0);
3162 PL_bodytarget = NEWSV(0,0);
3163 sv_upgrade(PL_bodytarget, SVt_PVFM);
3164 sv_setpvn(PL_bodytarget, "", 0);
3165 PL_formtarget = PL_bodytarget;
3168 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3169 sv_setpv(GvSV(tmpgv),PL_origfilename);
3170 magicname("0", "0", 1);
3172 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3174 sv_setpv(GvSV(tmpgv), os2_execname());
3176 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3178 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3179 GvMULTI_on(PL_argvgv);
3180 (void)gv_AVadd(PL_argvgv);
3181 av_clear(GvAVn(PL_argvgv));
3182 for (; argc > 0; argc--,argv++) {
3183 SV *sv = newSVpv(argv[0],0);
3184 av_push(GvAVn(PL_argvgv),sv);
3185 if (PL_widesyscalls)
3186 sv_utf8_upgrade(sv);
3189 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3191 GvMULTI_on(PL_envgv);
3192 hv = GvHVn(PL_envgv);
3193 hv_magic(hv, PL_envgv, 'E');
3194 #if !defined( VMS) && !defined(EPOC) /* VMS doesn't have environ array */
3195 /* Note that if the supplied env parameter is actually a copy
3196 of the global environ then it may now point to free'd memory
3197 if the environment has been modified since. To avoid this
3198 problem we treat env==NULL as meaning 'use the default'
3203 environ[0] = Nullch;
3204 for (; *env; env++) {
3205 if (!(s = strchr(*env,'=')))
3211 sv = newSVpv(s--,0);
3212 (void)hv_store(hv, *env, s - *env, sv, 0);
3214 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3215 /* Sins of the RTL. See note in my_setenv(). */
3216 (void)PerlEnv_putenv(savepv(*env));
3220 #ifdef DYNAMIC_ENV_FETCH
3221 HvNAME(hv) = savepv(ENV_HV_NAME);
3225 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3226 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3230 S_init_perllib(pTHX)
3235 s = PerlEnv_getenv("PERL5LIB");
3237 incpush(s, TRUE, TRUE);
3239 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3241 /* Treat PERL5?LIB as a possible search list logical name -- the
3242 * "natural" VMS idiom for a Unix path string. We allow each
3243 * element to be a set of |-separated directories for compatibility.
3247 if (my_trnlnm("PERL5LIB",buf,0))
3248 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3250 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3254 /* Use the ~-expanded versions of APPLLIB (undocumented),
3255 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3258 incpush(APPLLIB_EXP, TRUE, TRUE);
3262 incpush(ARCHLIB_EXP, FALSE, FALSE);
3265 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3268 incpush(PRIVLIB_EXP, TRUE, FALSE);
3270 incpush(PRIVLIB_EXP, FALSE, FALSE);
3274 /* sitearch is always relative to sitelib on Windows for
3275 * DLL-based path intuition to work correctly */
3276 # if !defined(WIN32)
3277 incpush(SITEARCH_EXP, FALSE, FALSE);
3283 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3285 incpush(SITELIB_EXP, FALSE, FALSE);
3289 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3290 incpush(SITELIB_STEM, FALSE, TRUE);
3293 #ifdef PERL_VENDORARCH_EXP
3294 /* vendorarch is always relative to vendorlib on Windows for
3295 * DLL-based path intuition to work correctly */
3296 # if !defined(WIN32)
3297 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3301 #ifdef PERL_VENDORLIB_EXP
3303 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3305 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3309 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3310 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3314 incpush(".", FALSE, FALSE);
3318 # define PERLLIB_SEP ';'
3321 # define PERLLIB_SEP '|'
3323 # define PERLLIB_SEP ':'
3326 #ifndef PERLLIB_MANGLE
3327 # define PERLLIB_MANGLE(s,n) (s)
3331 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3333 SV *subdir = Nullsv;
3338 if (addsubdirs || addoldvers) {
3339 subdir = sv_newmortal();
3342 /* Break at all separators */
3344 SV *libdir = NEWSV(55,0);
3347 /* skip any consecutive separators */
3348 while ( *p == PERLLIB_SEP ) {
3349 /* Uncomment the next line for PATH semantics */
3350 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3354 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3355 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3360 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3361 p = Nullch; /* break out */
3365 * BEFORE pushing libdir onto @INC we may first push version- and
3366 * archname-specific sub-directories.
3368 if (addsubdirs || addoldvers) {
3369 #ifdef PERL_INC_VERSION_LIST
3370 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3371 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3372 const char **incver;
3374 struct stat tmpstatbuf;
3379 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3381 while (unix[len-1] == '/') len--; /* Cosmetic */
3382 sv_usepvn(libdir,unix,len);
3385 PerlIO_printf(Perl_error_log,
3386 "Failed to unixify @INC element \"%s\"\n",
3390 /* .../version/archname if -d .../version/archname */
3391 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/"PERL_FS_VER_FMT"/%s",
3393 (int)PERL_REVISION, (int)PERL_VERSION,
3394 (int)PERL_SUBVERSION, ARCHNAME);
3395 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3396 S_ISDIR(tmpstatbuf.st_mode))
3397 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3399 /* .../version if -d .../version */
3400 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/"PERL_FS_VER_FMT, libdir,
3401 (int)PERL_REVISION, (int)PERL_VERSION,
3402 (int)PERL_SUBVERSION);
3403 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3404 S_ISDIR(tmpstatbuf.st_mode))
3405 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3407 /* .../archname if -d .../archname */
3408 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/%s", libdir, ARCHNAME);
3409 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3410 S_ISDIR(tmpstatbuf.st_mode))
3411 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3414 #ifdef PERL_INC_VERSION_LIST
3416 for (incver = incverlist; *incver; incver++) {
3417 /* .../xxx if -d .../xxx */
3418 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/%s", libdir, *incver);
3419 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3420 S_ISDIR(tmpstatbuf.st_mode))
3421 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3427 /* finally push this lib directory on the end of @INC */
3428 av_push(GvAVn(PL_incgv), libdir);
3433 STATIC struct perl_thread *
3434 S_init_main_thread(pTHX)
3436 #if !defined(PERL_IMPLICIT_CONTEXT)
3437 struct perl_thread *thr;
3441 Newz(53, thr, 1, struct perl_thread);
3442 PL_curcop = &PL_compiling;
3443 thr->interp = PERL_GET_INTERP;
3444 thr->cvcache = newHV();
3445 thr->threadsv = newAV();
3446 /* thr->threadsvp is set when find_threadsv is called */
3447 thr->specific = newAV();
3448 thr->flags = THRf_R_JOINABLE;
3449 MUTEX_INIT(&thr->mutex);
3450 /* Handcraft thrsv similarly to mess_sv */
3451 New(53, PL_thrsv, 1, SV);
3452 Newz(53, xpv, 1, XPV);
3453 SvFLAGS(PL_thrsv) = SVt_PV;
3454 SvANY(PL_thrsv) = (void*)xpv;
3455 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3456 SvPVX(PL_thrsv) = (char*)thr;
3457 SvCUR_set(PL_thrsv, sizeof(thr));
3458 SvLEN_set(PL_thrsv, sizeof(thr));
3459 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3460 thr->oursv = PL_thrsv;
3461 PL_chopset = " \n-";
3464 MUTEX_LOCK(&PL_threads_mutex);
3469 MUTEX_UNLOCK(&PL_threads_mutex);
3471 #ifdef HAVE_THREAD_INTERN
3472 Perl_init_thread_intern(thr);
3475 #ifdef SET_THREAD_SELF
3476 SET_THREAD_SELF(thr);
3478 thr->self = pthread_self();
3479 #endif /* SET_THREAD_SELF */
3483 * These must come after the SET_THR because sv_setpvn does
3484 * SvTAINT and the taint fields require dTHR.
3486 PL_toptarget = NEWSV(0,0);
3487 sv_upgrade(PL_toptarget, SVt_PVFM);
3488 sv_setpvn(PL_toptarget, "", 0);
3489 PL_bodytarget = NEWSV(0,0);
3490 sv_upgrade(PL_bodytarget, SVt_PVFM);
3491 sv_setpvn(PL_bodytarget, "", 0);
3492 PL_formtarget = PL_bodytarget;
3493 thr->errsv = newSVpvn("", 0);
3494 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3497 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3498 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3499 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3500 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3501 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3503 PL_reginterp_cnt = 0;
3507 #endif /* USE_THREADS */
3510 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3514 line_t oldline = CopLINE(PL_curcop);
3520 while (AvFILL(paramList) >= 0) {
3521 cv = (CV*)av_shift(paramList);
3523 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3524 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3530 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3534 (void)SvPV(atsv, len);
3537 PL_curcop = &PL_compiling;
3538 CopLINE_set(PL_curcop, oldline);
3539 if (paramList == PL_beginav)
3540 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3542 Perl_sv_catpvf(aTHX_ atsv,
3543 "%s failed--call queue aborted",
3544 paramList == PL_checkav ? "CHECK"
3545 : paramList == PL_initav ? "INIT"
3547 while (PL_scopestack_ix > oldscope)
3550 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3557 /* my_exit() was called */
3558 while (PL_scopestack_ix > oldscope)
3561 PL_curstash = PL_defstash;
3562 PL_curcop = &PL_compiling;
3563 CopLINE_set(PL_curcop, oldline);
3565 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3566 if (paramList == PL_beginav)
3567 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3569 Perl_croak(aTHX_ "%s failed--call queue aborted",
3570 paramList == PL_checkav ? "CHECK"
3571 : paramList == PL_initav ? "INIT"
3578 PL_curcop = &PL_compiling;
3579 CopLINE_set(PL_curcop, oldline);
3582 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3590 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3592 S_vcall_list_body(pTHX_ va_list args)
3594 CV *cv = va_arg(args, CV*);
3595 return call_list_body(cv);
3600 S_call_list_body(pTHX_ CV *cv)
3602 PUSHMARK(PL_stack_sp);
3603 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3608 Perl_my_exit(pTHX_ U32 status)
3612 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3613 thr, (unsigned long) status));
3622 STATUS_NATIVE_SET(status);
3629 Perl_my_failure_exit(pTHX)
3632 if (vaxc$errno & 1) {
3633 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3634 STATUS_NATIVE_SET(44);
3637 if (!vaxc$errno && errno) /* unlikely */
3638 STATUS_NATIVE_SET(44);
3640 STATUS_NATIVE_SET(vaxc$errno);
3645 STATUS_POSIX_SET(errno);
3647 exitstatus = STATUS_POSIX >> 8;
3648 if (exitstatus & 255)
3649 STATUS_POSIX_SET(exitstatus);
3651 STATUS_POSIX_SET(255);
3658 S_my_exit_jump(pTHX)
3661 register PERL_CONTEXT *cx;
3666 SvREFCNT_dec(PL_e_script);
3667 PL_e_script = Nullsv;
3670 POPSTACK_TO(PL_mainstack);
3671 if (cxstack_ix >= 0) {
3674 POPBLOCK(cx,PL_curpm);
3686 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3689 p = SvPVX(PL_e_script);
3690 nl = strchr(p, '\n');
3691 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3693 filter_del(read_e_script);
3696 sv_catpvn(buf_sv, p, nl-p);
3697 sv_chop(PL_e_script, nl);