3 * Copyright (c) 1987-2000 Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
15 #define PERL_IN_PERL_C
17 #include "patchlevel.h" /* for local_patches */
19 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
24 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
25 char *getenv (char *); /* Usually in <stdlib.h> */
28 static I32 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen);
36 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
43 #define perl_construct Perl_construct
44 #define perl_parse Perl_parse
45 #define perl_run Perl_run
46 #define perl_destruct Perl_destruct
47 #define perl_free Perl_free
50 #if defined(USE_THREADS)
51 # define INIT_TLS_AND_INTERP \
53 if (!PL_curinterp) { \
54 PERL_SET_INTERP(my_perl); \
60 # if defined(USE_ITHREADS)
61 # define INIT_TLS_AND_INTERP \
63 if (!PL_curinterp) { \
64 PERL_SET_INTERP(my_perl); \
67 PERL_SET_THX(my_perl); \
71 PERL_SET_THX(my_perl); \
75 # define INIT_TLS_AND_INTERP \
77 if (!PL_curinterp) { \
78 PERL_SET_INTERP(my_perl); \
80 PERL_SET_THX(my_perl); \
85 #ifdef PERL_IMPLICIT_SYS
87 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
88 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
89 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
90 struct IPerlDir* ipD, struct IPerlSock* ipS,
91 struct IPerlProc* ipP)
93 PerlInterpreter *my_perl;
95 my_perl = (PerlInterpreter*)new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd,
96 ipLIO, ipD, ipS, ipP);
99 /* New() needs interpreter, so call malloc() instead */
100 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
102 Zero(my_perl, 1, PerlInterpreter);
119 =for apidoc perl_alloc
121 Allocates a new Perl interpreter. See L<perlembed>.
129 PerlInterpreter *my_perl;
131 /* New() needs interpreter, so call malloc() instead */
132 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
135 Zero(my_perl, 1, PerlInterpreter);
138 #endif /* PERL_IMPLICIT_SYS */
141 =for apidoc perl_construct
143 Initializes a new Perl interpreter. See L<perlembed>.
149 perl_construct(pTHXx)
154 struct perl_thread *thr = NULL;
155 #endif /* FAKE_THREADS */
156 #endif /* USE_THREADS */
160 PL_perl_destruct_level = 1;
162 if (PL_perl_destruct_level > 0)
166 /* Init the real globals (and main thread)? */
169 MUTEX_INIT(&PL_sv_mutex);
171 * Safe to use basic SV functions from now on (though
172 * not things like mortals or tainting yet).
174 MUTEX_INIT(&PL_eval_mutex);
175 COND_INIT(&PL_eval_cond);
176 MUTEX_INIT(&PL_threads_mutex);
177 COND_INIT(&PL_nthreads_cond);
178 # ifdef EMULATE_ATOMIC_REFCOUNTS
179 MUTEX_INIT(&PL_svref_mutex);
180 # endif /* EMULATE_ATOMIC_REFCOUNTS */
182 MUTEX_INIT(&PL_cred_mutex);
184 thr = init_main_thread();
185 #endif /* USE_THREADS */
187 #ifdef PERL_FLEXIBLE_EXCEPTIONS
188 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
191 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
193 PL_linestr = NEWSV(65,79);
194 sv_upgrade(PL_linestr,SVt_PVIV);
196 if (!SvREADONLY(&PL_sv_undef)) {
197 /* set read-only and try to insure than we wont see REFCNT==0
200 SvREADONLY_on(&PL_sv_undef);
201 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
203 sv_setpv(&PL_sv_no,PL_No);
205 SvREADONLY_on(&PL_sv_no);
206 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
208 sv_setpv(&PL_sv_yes,PL_Yes);
210 SvREADONLY_on(&PL_sv_yes);
211 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
216 /* PL_sighandlerp = sighandler; */
218 PL_sighandlerp = Perl_sighandler;
220 PL_pidstatus = newHV();
224 * There is no way we can refer to them from Perl so close them to save
225 * space. The other alternative would be to provide STDAUX and STDPRN
228 (void)fclose(stdaux);
229 (void)fclose(stdprn);
233 PL_nrs = newSVpvn("\n", 1);
234 PL_rs = SvREFCNT_inc(PL_nrs);
239 PL_lex_state = LEX_NOTPARSING;
245 SET_NUMERIC_STANDARD();
249 PL_patchlevel = NEWSV(0,4);
250 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
251 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
252 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
253 s = (U8*)SvPVX(PL_patchlevel);
254 s = uv_to_utf8(s, (UV)PERL_REVISION);
255 s = uv_to_utf8(s, (UV)PERL_VERSION);
256 s = uv_to_utf8(s, (UV)PERL_SUBVERSION);
258 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
259 SvPOK_on(PL_patchlevel);
260 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
261 + ((NV)PERL_VERSION / (NV)1000)
262 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
263 + ((NV)PERL_SUBVERSION / (NV)1000000)
266 SvNOK_on(PL_patchlevel); /* dual valued */
267 SvUTF8_on(PL_patchlevel);
268 SvREADONLY_on(PL_patchlevel);
271 #if defined(LOCAL_PATCH_COUNT)
272 PL_localpatches = local_patches; /* For possible -v */
275 #ifdef HAVE_INTERP_INTERN
279 PerlIO_init(); /* Hook to IO system */
281 PL_fdpid = newAV(); /* for remembering popen pids by fd */
282 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
283 PL_errors = newSVpvn("",0);
289 =for apidoc perl_destruct
291 Shuts down a Perl interpreter. See L<perlembed>.
300 int destruct_level; /* 0=none, 1=full, 2=full with checks */
306 #endif /* USE_THREADS */
308 /* wait for all pseudo-forked children to finish */
309 PERL_WAIT_FOR_CHILDREN;
313 /* Pass 1 on any remaining threads: detach joinables, join zombies */
315 MUTEX_LOCK(&PL_threads_mutex);
316 DEBUG_S(PerlIO_printf(Perl_debug_log,
317 "perl_destruct: waiting for %d threads...\n",
319 for (t = thr->next; t != thr; t = t->next) {
320 MUTEX_LOCK(&t->mutex);
321 switch (ThrSTATE(t)) {
324 DEBUG_S(PerlIO_printf(Perl_debug_log,
325 "perl_destruct: joining zombie %p\n", t));
326 ThrSETSTATE(t, THRf_DEAD);
327 MUTEX_UNLOCK(&t->mutex);
330 * The SvREFCNT_dec below may take a long time (e.g. av
331 * may contain an object scalar whose destructor gets
332 * called) so we have to unlock threads_mutex and start
335 MUTEX_UNLOCK(&PL_threads_mutex);
337 SvREFCNT_dec((SV*)av);
338 DEBUG_S(PerlIO_printf(Perl_debug_log,
339 "perl_destruct: joined zombie %p OK\n", t));
341 case THRf_R_JOINABLE:
342 DEBUG_S(PerlIO_printf(Perl_debug_log,
343 "perl_destruct: detaching thread %p\n", t));
344 ThrSETSTATE(t, THRf_R_DETACHED);
346 * We unlock threads_mutex and t->mutex in the opposite order
347 * from which we locked them just so that DETACH won't
348 * deadlock if it panics. It's only a breach of good style
349 * not a bug since they are unlocks not locks.
351 MUTEX_UNLOCK(&PL_threads_mutex);
353 MUTEX_UNLOCK(&t->mutex);
356 DEBUG_S(PerlIO_printf(Perl_debug_log,
357 "perl_destruct: ignoring %p (state %u)\n",
359 MUTEX_UNLOCK(&t->mutex);
360 /* fall through and out */
363 /* We leave the above "Pass 1" loop with threads_mutex still locked */
365 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
366 while (PL_nthreads > 1)
368 DEBUG_S(PerlIO_printf(Perl_debug_log,
369 "perl_destruct: final wait for %d threads\n",
371 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
373 /* At this point, we're the last thread */
374 MUTEX_UNLOCK(&PL_threads_mutex);
375 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
376 MUTEX_DESTROY(&PL_threads_mutex);
377 COND_DESTROY(&PL_nthreads_cond);
378 #endif /* !defined(FAKE_THREADS) */
379 #endif /* USE_THREADS */
381 destruct_level = PL_perl_destruct_level;
385 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
387 if (destruct_level < i)
396 /* We must account for everything. */
398 /* Destroy the main CV and syntax tree */
400 PL_curpad = AvARRAY(PL_comppad);
401 op_free(PL_main_root);
402 PL_main_root = Nullop;
404 PL_curcop = &PL_compiling;
405 PL_main_start = Nullop;
406 SvREFCNT_dec(PL_main_cv);
410 if (PL_sv_objcount) {
412 * Try to destruct global references. We do this first so that the
413 * destructors and destructees still exist. Some sv's might remain.
414 * Non-referenced objects are on their own.
419 /* unhook hooks which will soon be, or use, destroyed data */
420 SvREFCNT_dec(PL_warnhook);
421 PL_warnhook = Nullsv;
422 SvREFCNT_dec(PL_diehook);
425 /* call exit list functions */
426 while (PL_exitlistlen-- > 0)
427 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
429 Safefree(PL_exitlist);
431 if (destruct_level == 0){
433 DEBUG_P(debprofdump());
435 /* The exit() function will do everything that needs doing. */
439 /* loosen bonds of global variables */
442 (void)PerlIO_close(PL_rsfp);
446 /* Filters for program text */
447 SvREFCNT_dec(PL_rsfp_filters);
448 PL_rsfp_filters = Nullav;
451 PL_preprocess = FALSE;
457 PL_doswitches = FALSE;
458 PL_dowarn = G_WARN_OFF;
459 PL_doextract = FALSE;
460 PL_sawampersand = FALSE; /* must save all match strings */
463 Safefree(PL_inplace);
465 SvREFCNT_dec(PL_patchlevel);
468 SvREFCNT_dec(PL_e_script);
469 PL_e_script = Nullsv;
472 /* magical thingies */
474 Safefree(PL_ofs); /* $, */
477 Safefree(PL_ors); /* $\ */
480 SvREFCNT_dec(PL_rs); /* $/ */
483 SvREFCNT_dec(PL_nrs); /* $/ helper */
486 PL_multiline = 0; /* $* */
487 Safefree(PL_osname); /* $^O */
490 SvREFCNT_dec(PL_statname);
491 PL_statname = Nullsv;
494 /* defgv, aka *_ should be taken care of elsewhere */
496 /* clean up after study() */
497 SvREFCNT_dec(PL_lastscream);
498 PL_lastscream = Nullsv;
499 Safefree(PL_screamfirst);
501 Safefree(PL_screamnext);
505 Safefree(PL_efloatbuf);
506 PL_efloatbuf = Nullch;
509 /* startup and shutdown function lists */
510 SvREFCNT_dec(PL_beginav);
511 SvREFCNT_dec(PL_endav);
512 SvREFCNT_dec(PL_checkav);
513 SvREFCNT_dec(PL_initav);
519 /* shortcuts just get cleared */
525 PL_argvoutgv = Nullgv;
527 PL_stderrgv = Nullgv;
528 PL_last_in_gv = Nullgv;
530 PL_debstash = Nullhv;
532 /* reset so print() ends up where we expect */
535 SvREFCNT_dec(PL_argvout_stack);
536 PL_argvout_stack = Nullav;
538 SvREFCNT_dec(PL_modglobal);
539 PL_modglobal = Nullhv;
540 SvREFCNT_dec(PL_preambleav);
541 PL_preambleav = Nullav;
542 SvREFCNT_dec(PL_subname);
544 SvREFCNT_dec(PL_linestr);
546 SvREFCNT_dec(PL_pidstatus);
547 PL_pidstatus = Nullhv;
548 SvREFCNT_dec(PL_toptarget);
549 PL_toptarget = Nullsv;
550 SvREFCNT_dec(PL_bodytarget);
551 PL_bodytarget = Nullsv;
552 PL_formtarget = Nullsv;
554 /* free locale stuff */
555 #ifdef USE_LOCALE_COLLATE
556 Safefree(PL_collation_name);
557 PL_collation_name = Nullch;
560 #ifdef USE_LOCALE_NUMERIC
561 Safefree(PL_numeric_name);
562 PL_numeric_name = Nullch;
565 /* clear utf8 character classes */
566 SvREFCNT_dec(PL_utf8_alnum);
567 SvREFCNT_dec(PL_utf8_alnumc);
568 SvREFCNT_dec(PL_utf8_ascii);
569 SvREFCNT_dec(PL_utf8_alpha);
570 SvREFCNT_dec(PL_utf8_space);
571 SvREFCNT_dec(PL_utf8_cntrl);
572 SvREFCNT_dec(PL_utf8_graph);
573 SvREFCNT_dec(PL_utf8_digit);
574 SvREFCNT_dec(PL_utf8_upper);
575 SvREFCNT_dec(PL_utf8_lower);
576 SvREFCNT_dec(PL_utf8_print);
577 SvREFCNT_dec(PL_utf8_punct);
578 SvREFCNT_dec(PL_utf8_xdigit);
579 SvREFCNT_dec(PL_utf8_mark);
580 SvREFCNT_dec(PL_utf8_toupper);
581 SvREFCNT_dec(PL_utf8_tolower);
582 PL_utf8_alnum = Nullsv;
583 PL_utf8_alnumc = Nullsv;
584 PL_utf8_ascii = Nullsv;
585 PL_utf8_alpha = Nullsv;
586 PL_utf8_space = Nullsv;
587 PL_utf8_cntrl = Nullsv;
588 PL_utf8_graph = Nullsv;
589 PL_utf8_digit = Nullsv;
590 PL_utf8_upper = Nullsv;
591 PL_utf8_lower = Nullsv;
592 PL_utf8_print = Nullsv;
593 PL_utf8_punct = Nullsv;
594 PL_utf8_xdigit = Nullsv;
595 PL_utf8_mark = Nullsv;
596 PL_utf8_toupper = Nullsv;
597 PL_utf8_totitle = Nullsv;
598 PL_utf8_tolower = Nullsv;
600 if (!specialWARN(PL_compiling.cop_warnings))
601 SvREFCNT_dec(PL_compiling.cop_warnings);
602 PL_compiling.cop_warnings = Nullsv;
604 Safefree(CopFILE(&PL_compiling));
605 CopFILE(&PL_compiling) = Nullch;
606 Safefree(CopSTASHPV(&PL_compiling));
608 SvREFCNT_dec(CopFILEGV(&PL_compiling));
609 CopFILEGV(&PL_compiling) = Nullgv;
610 /* cop_stash is not refcounted */
613 /* Prepare to destruct main symbol table. */
618 SvREFCNT_dec(PL_curstname);
619 PL_curstname = Nullsv;
621 /* clear queued errors */
622 SvREFCNT_dec(PL_errors);
626 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
627 if (PL_scopestack_ix != 0)
628 Perl_warner(aTHX_ WARN_INTERNAL,
629 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
630 (long)PL_scopestack_ix);
631 if (PL_savestack_ix != 0)
632 Perl_warner(aTHX_ WARN_INTERNAL,
633 "Unbalanced saves: %ld more saves than restores\n",
634 (long)PL_savestack_ix);
635 if (PL_tmps_floor != -1)
636 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
637 (long)PL_tmps_floor + 1);
638 if (cxstack_ix != -1)
639 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
640 (long)cxstack_ix + 1);
643 /* Now absolutely destruct everything, somehow or other, loops or no. */
645 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
646 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
647 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
648 last_sv_count = PL_sv_count;
651 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
652 SvFLAGS(PL_fdpid) |= SVt_PVAV;
653 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
654 SvFLAGS(PL_strtab) |= SVt_PVHV;
656 AvREAL_off(PL_fdpid); /* no surviving entries */
657 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
660 /* Destruct the global string table. */
662 /* Yell and reset the HeVAL() slots that are still holding refcounts,
663 * so that sv_free() won't fail on them.
671 max = HvMAX(PL_strtab);
672 array = HvARRAY(PL_strtab);
675 if (hent && ckWARN_d(WARN_INTERNAL)) {
676 Perl_warner(aTHX_ WARN_INTERNAL,
677 "Unbalanced string table refcount: (%d) for \"%s\"",
678 HeVAL(hent) - Nullsv, HeKEY(hent));
679 HeVAL(hent) = Nullsv;
689 SvREFCNT_dec(PL_strtab);
691 /* free special SVs */
693 SvREFCNT(&PL_sv_yes) = 0;
694 sv_clear(&PL_sv_yes);
695 SvANY(&PL_sv_yes) = NULL;
696 SvFLAGS(&PL_sv_yes) = 0;
698 SvREFCNT(&PL_sv_no) = 0;
700 SvANY(&PL_sv_no) = NULL;
701 SvFLAGS(&PL_sv_no) = 0;
703 SvREFCNT(&PL_sv_undef) = 0;
704 SvREADONLY_off(&PL_sv_undef);
706 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
707 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
711 /* No SVs have survived, need to clean out */
712 Safefree(PL_origfilename);
713 Safefree(PL_reg_start_tmp);
715 Safefree(PL_reg_curpm);
716 Safefree(PL_reg_poscache);
717 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
718 Safefree(PL_op_mask);
720 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
722 DEBUG_P(debprofdump());
724 MUTEX_DESTROY(&PL_strtab_mutex);
725 MUTEX_DESTROY(&PL_sv_mutex);
726 MUTEX_DESTROY(&PL_eval_mutex);
727 MUTEX_DESTROY(&PL_cred_mutex);
728 COND_DESTROY(&PL_eval_cond);
729 #ifdef EMULATE_ATOMIC_REFCOUNTS
730 MUTEX_DESTROY(&PL_svref_mutex);
731 #endif /* EMULATE_ATOMIC_REFCOUNTS */
733 /* As the penultimate thing, free the non-arena SV for thrsv */
734 Safefree(SvPVX(PL_thrsv));
735 Safefree(SvANY(PL_thrsv));
738 #endif /* USE_THREADS */
740 /* As the absolutely last thing, free the non-arena SV for mess() */
743 /* it could have accumulated taint magic */
744 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
747 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
748 moremagic = mg->mg_moremagic;
749 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
750 Safefree(mg->mg_ptr);
754 /* we know that type >= SVt_PV */
755 (void)SvOOK_off(PL_mess_sv);
756 Safefree(SvPVX(PL_mess_sv));
757 Safefree(SvANY(PL_mess_sv));
758 Safefree(PL_mess_sv);
764 =for apidoc perl_free
766 Releases a Perl interpreter. See L<perlembed>.
774 #if defined(PERL_OBJECT)
777 # if defined(PERL_IMPLICIT_SYS) && defined(WIN32)
778 void *host = w32_internal_host;
780 win32_delete_internal_host(host);
788 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
790 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
791 PL_exitlist[PL_exitlistlen].fn = fn;
792 PL_exitlist[PL_exitlistlen].ptr = ptr;
797 =for apidoc perl_parse
799 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
805 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
815 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
818 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
819 setuid perl scripts securely.\n");
823 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
824 _dyld_lookup_and_bind
825 ("__environ", (unsigned long *) &environ_pointer, NULL);
830 #ifndef VMS /* VMS doesn't have environ array */
831 PL_origenviron = environ;
836 /* Come here if running an undumped a.out. */
838 PL_origfilename = savepv(argv[0]);
839 PL_do_undump = FALSE;
840 cxstack_ix = -1; /* start label stack again */
842 init_postdump_symbols(argc,argv,env);
847 PL_curpad = AvARRAY(PL_comppad);
848 op_free(PL_main_root);
849 PL_main_root = Nullop;
851 PL_main_start = Nullop;
852 SvREFCNT_dec(PL_main_cv);
856 oldscope = PL_scopestack_ix;
857 PL_dowarn = G_WARN_OFF;
859 #ifdef PERL_FLEXIBLE_EXCEPTIONS
860 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
866 #ifndef PERL_FLEXIBLE_EXCEPTIONS
867 parse_body(env,xsinit);
870 call_list(oldscope, PL_checkav);
877 /* my_exit() was called */
878 while (PL_scopestack_ix > oldscope)
881 PL_curstash = PL_defstash;
883 call_list(oldscope, PL_checkav);
884 ret = STATUS_NATIVE_EXPORT;
887 PerlIO_printf(Perl_error_log, "panic: top_env\n");
895 #ifdef PERL_FLEXIBLE_EXCEPTIONS
897 S_vparse_body(pTHX_ va_list args)
899 char **env = va_arg(args, char**);
900 XSINIT_t xsinit = va_arg(args, XSINIT_t);
902 return parse_body(env, xsinit);
907 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
910 int argc = PL_origargc;
911 char **argv = PL_origargv;
912 char *scriptname = NULL;
914 VOL bool dosearch = FALSE;
919 char *cddir = Nullch;
921 sv_setpvn(PL_linestr,"",0);
922 sv = newSVpvn("",0); /* first used for -I flags */
926 for (argc--,argv++; argc > 0; argc--,argv++) {
927 if (argv[0][0] != '-' || !argv[0][1])
931 validarg = " PHOOEY ";
940 win32_argv2utf8(argc-1, argv+1);
943 #ifndef PERL_STRICT_CR
967 if ((s = moreswitches(s)))
977 #ifdef MACOS_TRADITIONAL
978 /* ignore -e for Dev:Pseudo argument */
979 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
982 if (PL_euid != PL_uid || PL_egid != PL_gid)
983 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
985 PL_e_script = newSVpvn("",0);
986 filter_add(read_e_script, NULL);
989 sv_catpv(PL_e_script, s);
991 sv_catpv(PL_e_script, argv[1]);
995 Perl_croak(aTHX_ "No code specified for -e");
996 sv_catpv(PL_e_script, "\n");
999 case 'I': /* -I handled both here and in moreswitches() */
1001 if (!*++s && (s=argv[1]) != Nullch) {
1006 STRLEN len = strlen(s);
1007 p = savepvn(s, len);
1008 incpush(p, TRUE, TRUE);
1009 sv_catpvn(sv, "-I", 2);
1010 sv_catpvn(sv, p, len);
1011 sv_catpvn(sv, " ", 1);
1015 Perl_croak(aTHX_ "No directory specified for -I");
1019 PL_preprocess = TRUE;
1029 PL_preambleav = newAV();
1030 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1032 PL_Sv = newSVpv("print myconfig();",0);
1034 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1036 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1038 sv_catpv(PL_Sv,"\" Compile-time options:");
1040 sv_catpv(PL_Sv," DEBUGGING");
1042 # ifdef MULTIPLICITY
1043 sv_catpv(PL_Sv," MULTIPLICITY");
1046 sv_catpv(PL_Sv," USE_THREADS");
1048 # ifdef USE_ITHREADS
1049 sv_catpv(PL_Sv," USE_ITHREADS");
1051 # ifdef USE_64_BIT_INT
1052 sv_catpv(PL_Sv," USE_64_BIT_INT");
1054 # ifdef USE_64_BIT_ALL
1055 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1057 # ifdef USE_LONG_DOUBLE
1058 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1060 # ifdef USE_LARGE_FILES
1061 sv_catpv(PL_Sv," USE_LARGE_FILES");
1064 sv_catpv(PL_Sv," USE_SOCKS");
1067 sv_catpv(PL_Sv," PERL_OBJECT");
1069 # ifdef PERL_IMPLICIT_CONTEXT
1070 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1072 # ifdef PERL_IMPLICIT_SYS
1073 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1075 sv_catpv(PL_Sv,"\\n\",");
1077 #if defined(LOCAL_PATCH_COUNT)
1078 if (LOCAL_PATCH_COUNT > 0) {
1080 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1081 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1082 if (PL_localpatches[i])
1083 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1087 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1090 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1092 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1095 sv_catpv(PL_Sv, "; \
1097 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1098 print \" \\%ENV:\\n @env\\n\" if @env; \
1099 print \" \\@INC:\\n @INC\\n\";");
1102 PL_Sv = newSVpv("config_vars(qw(",0);
1103 sv_catpv(PL_Sv, ++s);
1104 sv_catpv(PL_Sv, "))");
1107 av_push(PL_preambleav, PL_Sv);
1108 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1111 PL_doextract = TRUE;
1119 if (!*++s || isSPACE(*s)) {
1123 /* catch use of gnu style long options */
1124 if (strEQ(s, "version")) {
1128 if (strEQ(s, "help")) {
1135 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1141 #ifndef SECURE_INTERNAL_GETENV
1144 (s = PerlEnv_getenv("PERL5OPT")))
1148 if (*s == '-' && *(s+1) == 'T')
1161 if (!strchr("DIMUdmw", *s))
1162 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1163 s = moreswitches(s);
1169 scriptname = argv[0];
1172 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1174 else if (scriptname == Nullch) {
1176 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1184 open_script(scriptname,dosearch,sv,&fdscript);
1186 validate_suid(validarg, scriptname,fdscript);
1188 #if defined(SIGCHLD) || defined(SIGCLD)
1191 # define SIGCHLD SIGCLD
1193 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1194 if (sigstate == SIG_IGN) {
1195 if (ckWARN(WARN_SIGNAL))
1196 Perl_warner(aTHX_ WARN_SIGNAL,
1197 "Can't ignore signal CHLD, forcing to default");
1198 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1203 #ifdef MACOS_TRADITIONAL
1204 if (PL_doextract || gMacPerl_AlwaysExtract) {
1209 if (cddir && PerlDir_chdir(cddir) < 0)
1210 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1214 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1215 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1216 CvUNIQUE_on(PL_compcv);
1218 PL_comppad = newAV();
1219 av_push(PL_comppad, Nullsv);
1220 PL_curpad = AvARRAY(PL_comppad);
1221 PL_comppad_name = newAV();
1222 PL_comppad_name_fill = 0;
1223 PL_min_intro_pending = 0;
1226 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1227 PL_curpad[0] = (SV*)newAV();
1228 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1229 CvOWNER(PL_compcv) = 0;
1230 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1231 MUTEX_INIT(CvMUTEXP(PL_compcv));
1232 #endif /* USE_THREADS */
1234 comppadlist = newAV();
1235 AvREAL_off(comppadlist);
1236 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1237 av_store(comppadlist, 1, (SV*)PL_comppad);
1238 CvPADLIST(PL_compcv) = comppadlist;
1240 boot_core_UNIVERSAL();
1242 boot_core_xsutils();
1246 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1247 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__)
1255 init_predump_symbols();
1256 /* init_postdump_symbols not currently designed to be called */
1257 /* more than once (ENV isn't cleared first, for example) */
1258 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1260 init_postdump_symbols(argc,argv,env);
1264 /* now parse the script */
1266 SETERRNO(0,SS$_NORMAL);
1268 #ifdef MACOS_TRADITIONAL
1269 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1271 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1273 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1274 MacPerl_MPWFileName(PL_origfilename));
1278 if (yyparse() || PL_error_count) {
1280 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1282 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1287 CopLINE_set(PL_curcop, 0);
1288 PL_curstash = PL_defstash;
1289 PL_preprocess = FALSE;
1291 SvREFCNT_dec(PL_e_script);
1292 PL_e_script = Nullsv;
1295 /* now that script is parsed, we can modify record separator */
1296 SvREFCNT_dec(PL_rs);
1297 PL_rs = SvREFCNT_inc(PL_nrs);
1298 sv_setsv(get_sv("/", TRUE), PL_rs);
1303 SAVECOPFILE(PL_curcop);
1304 SAVECOPLINE(PL_curcop);
1305 gv_check(PL_defstash);
1312 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1313 dump_mstats("after compilation:");
1322 =for apidoc perl_run
1324 Tells a Perl interpreter to run. See L<perlembed>.
1340 oldscope = PL_scopestack_ix;
1342 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1344 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1350 cxstack_ix = -1; /* start context stack again */
1352 case 0: /* normal completion */
1353 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1358 case 2: /* my_exit() */
1359 while (PL_scopestack_ix > oldscope)
1362 PL_curstash = PL_defstash;
1363 if (PL_endav && !PL_minus_c)
1364 call_list(oldscope, PL_endav);
1366 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1367 dump_mstats("after execution: ");
1369 ret = STATUS_NATIVE_EXPORT;
1373 POPSTACK_TO(PL_mainstack);
1376 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1386 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1388 S_vrun_body(pTHX_ va_list args)
1390 I32 oldscope = va_arg(args, I32);
1392 return run_body(oldscope);
1398 S_run_body(pTHX_ I32 oldscope)
1402 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1403 PL_sawampersand ? "Enabling" : "Omitting"));
1405 if (!PL_restartop) {
1406 DEBUG_x(dump_all());
1407 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1408 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1412 #ifdef MACOS_TRADITIONAL
1413 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1415 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1419 if (PERLDB_SINGLE && PL_DBsingle)
1420 sv_setiv(PL_DBsingle, 1);
1422 call_list(oldscope, PL_initav);
1428 PL_op = PL_restartop;
1432 else if (PL_main_start) {
1433 CvDEPTH(PL_main_cv) = 1;
1434 PL_op = PL_main_start;
1444 =for apidoc p||get_sv
1446 Returns the SV of the specified Perl scalar. If C<create> is set and the
1447 Perl variable does not exist then it will be created. If C<create> is not
1448 set and the variable does not exist then NULL is returned.
1454 Perl_get_sv(pTHX_ const char *name, I32 create)
1458 if (name[1] == '\0' && !isALPHA(name[0])) {
1459 PADOFFSET tmp = find_threadsv(name);
1460 if (tmp != NOT_IN_PAD) {
1462 return THREADSV(tmp);
1465 #endif /* USE_THREADS */
1466 gv = gv_fetchpv(name, create, SVt_PV);
1473 =for apidoc p||get_av
1475 Returns the AV of the specified Perl array. If C<create> is set and the
1476 Perl variable does not exist then it will be created. If C<create> is not
1477 set and the variable does not exist then NULL is returned.
1483 Perl_get_av(pTHX_ const char *name, I32 create)
1485 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1494 =for apidoc p||get_hv
1496 Returns the HV of the specified Perl hash. If C<create> is set and the
1497 Perl variable does not exist then it will be created. If C<create> is not
1498 set and the variable does not exist then NULL is returned.
1504 Perl_get_hv(pTHX_ const char *name, I32 create)
1506 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1515 =for apidoc p||get_cv
1517 Returns the CV of the specified Perl subroutine. If C<create> is set and
1518 the Perl subroutine does not exist then it will be declared (which has the
1519 same effect as saying C<sub name;>). If C<create> is not set and the
1520 subroutine does not exist then NULL is returned.
1526 Perl_get_cv(pTHX_ const char *name, I32 create)
1528 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1529 /* XXX unsafe for threads if eval_owner isn't held */
1530 /* XXX this is probably not what they think they're getting.
1531 * It has the same effect as "sub name;", i.e. just a forward
1533 if (create && !GvCVu(gv))
1534 return newSUB(start_subparse(FALSE, 0),
1535 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1543 /* Be sure to refetch the stack pointer after calling these routines. */
1546 =for apidoc p||call_argv
1548 Performs a callback to the specified Perl sub. See L<perlcall>.
1554 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1556 /* See G_* flags in cop.h */
1557 /* null terminated arg list */
1564 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1569 return call_pv(sub_name, flags);
1573 =for apidoc p||call_pv
1575 Performs a callback to the specified Perl sub. See L<perlcall>.
1581 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1582 /* name of the subroutine */
1583 /* See G_* flags in cop.h */
1585 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1589 =for apidoc p||call_method
1591 Performs a callback to the specified Perl method. The blessed object must
1592 be on the stack. See L<perlcall>.
1598 Perl_call_method(pTHX_ const char *methname, I32 flags)
1599 /* name of the subroutine */
1600 /* See G_* flags in cop.h */
1602 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1605 /* May be called with any of a CV, a GV, or an SV containing the name. */
1607 =for apidoc p||call_sv
1609 Performs a callback to the Perl sub whose name is in the SV. See
1616 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1617 /* See G_* flags in cop.h */
1620 LOGOP myop; /* fake syntax tree node */
1625 bool oldcatch = CATCH_GET;
1630 if (flags & G_DISCARD) {
1635 Zero(&myop, 1, LOGOP);
1636 myop.op_next = Nullop;
1637 if (!(flags & G_NOARGS))
1638 myop.op_flags |= OPf_STACKED;
1639 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1640 (flags & G_ARRAY) ? OPf_WANT_LIST :
1645 EXTEND(PL_stack_sp, 1);
1646 *++PL_stack_sp = sv;
1648 oldscope = PL_scopestack_ix;
1650 if (PERLDB_SUB && PL_curstash != PL_debstash
1651 /* Handle first BEGIN of -d. */
1652 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1653 /* Try harder, since this may have been a sighandler, thus
1654 * curstash may be meaningless. */
1655 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1656 && !(flags & G_NODEBUG))
1657 PL_op->op_private |= OPpENTERSUB_DB;
1659 if (flags & G_METHOD) {
1660 Zero(&method_op, 1, UNOP);
1661 method_op.op_next = PL_op;
1662 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1663 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1664 PL_op = (OP*)&method_op;
1667 if (!(flags & G_EVAL)) {
1669 call_body((OP*)&myop, FALSE);
1670 retval = PL_stack_sp - (PL_stack_base + oldmark);
1671 CATCH_SET(oldcatch);
1674 myop.op_other = (OP*)&myop;
1676 /* we're trying to emulate pp_entertry() here */
1678 register PERL_CONTEXT *cx;
1679 I32 gimme = GIMME_V;
1684 push_return(Nullop);
1685 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1687 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1689 PL_in_eval = EVAL_INEVAL;
1690 if (flags & G_KEEPERR)
1691 PL_in_eval |= EVAL_KEEPERR;
1697 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1699 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1706 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1708 call_body((OP*)&myop, FALSE);
1710 retval = PL_stack_sp - (PL_stack_base + oldmark);
1711 if (!(flags & G_KEEPERR))
1718 /* my_exit() was called */
1719 PL_curstash = PL_defstash;
1722 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1723 Perl_croak(aTHX_ "Callback called exit");
1728 PL_op = PL_restartop;
1732 PL_stack_sp = PL_stack_base + oldmark;
1733 if (flags & G_ARRAY)
1737 *++PL_stack_sp = &PL_sv_undef;
1742 if (PL_scopestack_ix > oldscope) {
1746 register PERL_CONTEXT *cx;
1758 if (flags & G_DISCARD) {
1759 PL_stack_sp = PL_stack_base + oldmark;
1768 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1770 S_vcall_body(pTHX_ va_list args)
1772 OP *myop = va_arg(args, OP*);
1773 int is_eval = va_arg(args, int);
1775 call_body(myop, is_eval);
1781 S_call_body(pTHX_ OP *myop, int is_eval)
1785 if (PL_op == myop) {
1787 PL_op = Perl_pp_entereval(aTHX);
1789 PL_op = Perl_pp_entersub(aTHX);
1795 /* Eval a string. The G_EVAL flag is always assumed. */
1798 =for apidoc p||eval_sv
1800 Tells Perl to C<eval> the string in the SV.
1806 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1808 /* See G_* flags in cop.h */
1811 UNOP myop; /* fake syntax tree node */
1812 I32 oldmark = SP - PL_stack_base;
1819 if (flags & G_DISCARD) {
1826 Zero(PL_op, 1, UNOP);
1827 EXTEND(PL_stack_sp, 1);
1828 *++PL_stack_sp = sv;
1829 oldscope = PL_scopestack_ix;
1831 if (!(flags & G_NOARGS))
1832 myop.op_flags = OPf_STACKED;
1833 myop.op_next = Nullop;
1834 myop.op_type = OP_ENTEREVAL;
1835 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1836 (flags & G_ARRAY) ? OPf_WANT_LIST :
1838 if (flags & G_KEEPERR)
1839 myop.op_flags |= OPf_SPECIAL;
1841 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1843 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1850 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1852 call_body((OP*)&myop,TRUE);
1854 retval = PL_stack_sp - (PL_stack_base + oldmark);
1855 if (!(flags & G_KEEPERR))
1862 /* my_exit() was called */
1863 PL_curstash = PL_defstash;
1866 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1867 Perl_croak(aTHX_ "Callback called exit");
1872 PL_op = PL_restartop;
1876 PL_stack_sp = PL_stack_base + oldmark;
1877 if (flags & G_ARRAY)
1881 *++PL_stack_sp = &PL_sv_undef;
1887 if (flags & G_DISCARD) {
1888 PL_stack_sp = PL_stack_base + oldmark;
1898 =for apidoc p||eval_pv
1900 Tells Perl to C<eval> the given string and return an SV* result.
1906 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1909 SV* sv = newSVpv(p, 0);
1912 eval_sv(sv, G_SCALAR);
1919 if (croak_on_error && SvTRUE(ERRSV)) {
1921 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1927 /* Require a module. */
1930 =for apidoc p||require_pv
1932 Tells Perl to C<require> a module.
1938 Perl_require_pv(pTHX_ const char *pv)
1942 PUSHSTACKi(PERLSI_REQUIRE);
1944 sv = sv_newmortal();
1945 sv_setpv(sv, "require '");
1948 eval_sv(sv, G_DISCARD);
1954 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
1958 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
1959 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1963 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
1965 /* This message really ought to be max 23 lines.
1966 * Removed -h because the user already knows that opton. Others? */
1968 static char *usage_msg[] = {
1969 "-0[octal] specify record separator (\\0, if no argument)",
1970 "-a autosplit mode with -n or -p (splits $_ into @F)",
1971 "-C enable native wide character system interfaces",
1972 "-c check syntax only (runs BEGIN and CHECK blocks)",
1973 "-d[:debugger] run program under debugger",
1974 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1975 "-e 'command' one line of program (several -e's allowed, omit programfile)",
1976 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
1977 "-i[extension] edit <> files in place (makes backup if extension supplied)",
1978 "-Idirectory specify @INC/#include directory (several -I's allowed)",
1979 "-l[octal] enable line ending processing, specifies line terminator",
1980 "-[mM][-]module execute `use/no module...' before executing program",
1981 "-n assume 'while (<>) { ... }' loop around program",
1982 "-p assume loop like -n but print line also, like sed",
1983 "-P run program through C preprocessor before compilation",
1984 "-s enable rudimentary parsing for switches after programfile",
1985 "-S look for programfile using PATH environment variable",
1986 "-T enable tainting checks",
1987 "-u dump core after parsing program",
1988 "-U allow unsafe operations",
1989 "-v print version, subversion (includes VERY IMPORTANT perl info)",
1990 "-V[:variable] print configuration summary (or a single Config.pm variable)",
1991 "-w enable many useful warnings (RECOMMENDED)",
1992 "-W enable all warnings",
1993 "-X disable all warnings",
1994 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
1998 char **p = usage_msg;
2000 PerlIO_printf(PerlIO_stdout(),
2001 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2004 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2007 /* This routine handles any switches that can be given during run */
2010 Perl_moreswitches(pTHX_ char *s)
2019 numlen = 0; /* disallow underscores */
2020 rschar = (U32)scan_oct(s, 4, &numlen);
2021 SvREFCNT_dec(PL_nrs);
2022 if (rschar & ~((U8)~0))
2023 PL_nrs = &PL_sv_undef;
2024 else if (!rschar && numlen >= 2)
2025 PL_nrs = newSVpvn("", 0);
2028 PL_nrs = newSVpvn(&ch, 1);
2033 PL_widesyscalls = TRUE;
2038 PL_splitstr = savepv(s + 1);
2052 if (*s == ':' || *s == '=') {
2053 my_setenv("PERL5DB", Perl_form(aTHX_ "use Devel::%s;", ++s));
2057 PL_perldb = PERLDB_ALL;
2065 if (isALPHA(s[1])) {
2066 static char debopts[] = "psltocPmfrxuLHXDS";
2069 for (s++; *s && (d = strchr(debopts,*s)); s++)
2070 PL_debug |= 1 << (d - debopts);
2073 PL_debug = atoi(s+1);
2074 for (s++; isDIGIT(*s); s++) ;
2076 PL_debug |= 0x80000000;
2079 if (ckWARN_d(WARN_DEBUGGING))
2080 Perl_warner(aTHX_ WARN_DEBUGGING,
2081 "Recompile perl with -DDEBUGGING to use -D switch\n");
2082 for (s++; isALNUM(*s); s++) ;
2088 usage(PL_origargv[0]);
2092 Safefree(PL_inplace);
2093 PL_inplace = savepv(s+1);
2095 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2098 if (*s == '-') /* Additional switches on #! line. */
2102 case 'I': /* -I handled both here and in parse_perl() */
2105 while (*s && isSPACE(*s))
2110 /* ignore trailing spaces (possibly followed by other switches) */
2112 for (e = p; *e && !isSPACE(*e); e++) ;
2116 } while (*p && *p != '-');
2117 e = savepvn(s, e-s);
2118 incpush(e, TRUE, TRUE);
2125 Perl_croak(aTHX_ "No directory specified for -I");
2133 PL_ors = savepv("\n");
2135 numlen = 0; /* disallow underscores */
2136 *PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2141 if (RsPARA(PL_nrs)) {
2146 PL_ors = SvPV(PL_nrs, PL_orslen);
2147 PL_ors = savepvn(PL_ors, PL_orslen);
2151 forbid_setid("-M"); /* XXX ? */
2154 forbid_setid("-m"); /* XXX ? */
2159 /* -M-foo == 'no foo' */
2160 if (*s == '-') { use = "no "; ++s; }
2161 sv = newSVpv(use,0);
2163 /* We allow -M'Module qw(Foo Bar)' */
2164 while(isALNUM(*s) || *s==':') ++s;
2166 sv_catpv(sv, start);
2167 if (*(start-1) == 'm') {
2169 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2170 sv_catpv( sv, " ()");
2174 Perl_croak(aTHX_ "Module name required with -%c option",
2176 sv_catpvn(sv, start, s-start);
2177 sv_catpv(sv, " split(/,/,q{");
2183 PL_preambleav = newAV();
2184 av_push(PL_preambleav, sv);
2187 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2199 PL_doswitches = TRUE;
2204 Perl_croak(aTHX_ "Too late for \"-T\" option");
2208 #ifdef MACOS_TRADITIONAL
2209 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2211 PL_do_undump = TRUE;
2219 PerlIO_printf(PerlIO_stdout(),
2220 Perl_form(aTHX_ "\nThis is perl, v%vd built for %s",
2221 PL_patchlevel, ARCHNAME));
2222 #if defined(LOCAL_PATCH_COUNT)
2223 if (LOCAL_PATCH_COUNT > 0)
2224 PerlIO_printf(PerlIO_stdout(),
2225 "\n(with %d registered patch%s, "
2226 "see perl -V for more detail)",
2227 (int)LOCAL_PATCH_COUNT,
2228 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2231 PerlIO_printf(PerlIO_stdout(),
2232 "\n\nCopyright 1987-2000, Larry Wall\n");
2234 PerlIO_printf(PerlIO_stdout(),
2235 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2238 PerlIO_printf(PerlIO_stdout(),
2239 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2240 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2243 PerlIO_printf(PerlIO_stdout(),
2244 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2245 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2248 PerlIO_printf(PerlIO_stdout(),
2249 "atariST series port, ++jrb bammi@cadence.com\n");
2252 PerlIO_printf(PerlIO_stdout(),
2253 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2256 PerlIO_printf(PerlIO_stdout(),
2257 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
2260 PerlIO_printf(PerlIO_stdout(),
2261 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2264 PerlIO_printf(PerlIO_stdout(),
2265 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2268 PerlIO_printf(PerlIO_stdout(),
2269 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2272 PerlIO_printf(PerlIO_stdout(),
2273 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2276 PerlIO_printf(PerlIO_stdout(),
2277 "MiNT port by Guido Flohr, 1997-1999\n");
2280 PerlIO_printf(PerlIO_stdout(),
2281 "EPOC port by Olaf Flebbe, 1999-2000\n");
2283 #ifdef BINARY_BUILD_NOTICE
2284 BINARY_BUILD_NOTICE;
2286 PerlIO_printf(PerlIO_stdout(),
2288 Perl may be copied only under the terms of either the Artistic License or the\n\
2289 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
2290 Complete documentation for Perl, including FAQ lists, should be found on\n\
2291 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2292 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2295 if (! (PL_dowarn & G_WARN_ALL_MASK))
2296 PL_dowarn |= G_WARN_ON;
2300 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2301 PL_compiling.cop_warnings = pWARN_ALL ;
2305 PL_dowarn = G_WARN_ALL_OFF;
2306 PL_compiling.cop_warnings = pWARN_NONE ;
2311 if (s[1] == '-') /* Additional switches on #! line. */
2316 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2322 #ifdef ALTERNATE_SHEBANG
2323 case 'S': /* OS/2 needs -S on "extproc" line. */
2331 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2336 /* compliments of Tom Christiansen */
2338 /* unexec() can be found in the Gnu emacs distribution */
2339 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2342 Perl_my_unexec(pTHX)
2350 prog = newSVpv(BIN_EXP, 0);
2351 sv_catpv(prog, "/perl");
2352 file = newSVpv(PL_origfilename, 0);
2353 sv_catpv(file, ".perldump");
2355 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2356 /* unexec prints msg to stderr in case of failure */
2357 PerlProc_exit(status);
2360 # include <lib$routines.h>
2361 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2363 ABORT(); /* for use with undump */
2368 /* initialize curinterp */
2373 #ifdef PERL_OBJECT /* XXX kludge */
2376 PL_chopset = " \n-"; \
2377 PL_copline = NOLINE; \
2378 PL_curcop = &PL_compiling;\
2379 PL_curcopdb = NULL; \
2381 PL_dumpindent = 4; \
2382 PL_laststatval = -1; \
2383 PL_laststype = OP_STAT; \
2384 PL_maxscream = -1; \
2385 PL_maxsysfd = MAXSYSFD; \
2386 PL_statname = Nullsv; \
2387 PL_tmps_floor = -1; \
2389 PL_op_mask = NULL; \
2390 PL_laststatval = -1; \
2391 PL_laststype = OP_STAT; \
2392 PL_mess_sv = Nullsv; \
2393 PL_splitstr = " "; \
2394 PL_generation = 100; \
2395 PL_exitlist = NULL; \
2396 PL_exitlistlen = 0; \
2398 PL_in_clean_objs = FALSE; \
2399 PL_in_clean_all = FALSE; \
2400 PL_profiledata = NULL; \
2402 PL_rsfp_filters = Nullav; \
2407 # ifdef MULTIPLICITY
2408 # define PERLVAR(var,type)
2409 # define PERLVARA(var,n,type)
2410 # if defined(PERL_IMPLICIT_CONTEXT)
2411 # if defined(USE_THREADS)
2412 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2413 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2414 # else /* !USE_THREADS */
2415 # define PERLVARI(var,type,init) aTHX->var = init;
2416 # define PERLVARIC(var,type,init) aTHX->var = init;
2417 # endif /* USE_THREADS */
2419 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2420 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2422 # include "intrpvar.h"
2423 # ifndef USE_THREADS
2424 # include "thrdvar.h"
2431 # define PERLVAR(var,type)
2432 # define PERLVARA(var,n,type)
2433 # define PERLVARI(var,type,init) PL_##var = init;
2434 # define PERLVARIC(var,type,init) PL_##var = init;
2435 # include "intrpvar.h"
2436 # ifndef USE_THREADS
2437 # include "thrdvar.h"
2449 S_init_main_stash(pTHX)
2454 /* Note that strtab is a rather special HV. Assumptions are made
2455 about not iterating on it, and not adding tie magic to it.
2456 It is properly deallocated in perl_destruct() */
2457 PL_strtab = newHV();
2459 MUTEX_INIT(&PL_strtab_mutex);
2461 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2462 hv_ksplit(PL_strtab, 512);
2464 PL_curstash = PL_defstash = newHV();
2465 PL_curstname = newSVpvn("main",4);
2466 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2467 SvREFCNT_dec(GvHV(gv));
2468 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2470 HvNAME(PL_defstash) = savepv("main");
2471 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2472 GvMULTI_on(PL_incgv);
2473 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2474 GvMULTI_on(PL_hintgv);
2475 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2476 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2477 GvMULTI_on(PL_errgv);
2478 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2479 GvMULTI_on(PL_replgv);
2480 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2481 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2482 sv_setpvn(ERRSV, "", 0);
2483 PL_curstash = PL_defstash;
2484 CopSTASH_set(&PL_compiling, PL_defstash);
2485 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2486 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2487 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2488 /* We must init $/ before switches are processed. */
2489 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2493 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2500 PL_origfilename = savepv("-e");
2503 /* if find_script() returns, it returns a malloc()-ed value */
2504 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2506 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2507 char *s = scriptname + 8;
2508 *fdscript = atoi(s);
2512 scriptname = savepv(s + 1);
2513 Safefree(PL_origfilename);
2514 PL_origfilename = scriptname;
2520 Safefree(CopFILE(PL_curcop));
2522 SvREFCNT_dec(CopFILEGV(PL_curcop));
2524 CopFILE_set(PL_curcop, PL_origfilename);
2525 if (strEQ(PL_origfilename,"-"))
2527 if (*fdscript >= 0) {
2528 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2529 #if defined(HAS_FCNTL) && defined(F_SETFD)
2531 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2534 else if (PL_preprocess) {
2535 char *cpp_cfg = CPPSTDIN;
2536 SV *cpp = newSVpvn("",0);
2537 SV *cmd = NEWSV(0,0);
2539 if (strEQ(cpp_cfg, "cppstdin"))
2540 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2541 sv_catpv(cpp, cpp_cfg);
2543 sv_catpvn(sv, "-I", 2);
2544 sv_catpv(sv,PRIVLIB_EXP);
2546 #if defined(MSDOS) || defined(WIN32)
2547 Perl_sv_setpvf(aTHX_ cmd, "\
2548 sed %s -e \"/^[^#]/b\" \
2549 -e \"/^#[ ]*include[ ]/b\" \
2550 -e \"/^#[ ]*define[ ]/b\" \
2551 -e \"/^#[ ]*if[ ]/b\" \
2552 -e \"/^#[ ]*ifdef[ ]/b\" \
2553 -e \"/^#[ ]*ifndef[ ]/b\" \
2554 -e \"/^#[ ]*else/b\" \
2555 -e \"/^#[ ]*elif[ ]/b\" \
2556 -e \"/^#[ ]*undef[ ]/b\" \
2557 -e \"/^#[ ]*endif/b\" \
2559 %s | %"SVf" -C %"SVf" %s",
2560 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2563 Perl_sv_setpvf(aTHX_ cmd, "\
2564 %s %s -e '/^[^#]/b' \
2565 -e '/^#[ ]*include[ ]/b' \
2566 -e '/^#[ ]*define[ ]/b' \
2567 -e '/^#[ ]*if[ ]/b' \
2568 -e '/^#[ ]*ifdef[ ]/b' \
2569 -e '/^#[ ]*ifndef[ ]/b' \
2570 -e '/^#[ ]*else/b' \
2571 -e '/^#[ ]*elif[ ]/b' \
2572 -e '/^#[ ]*undef[ ]/b' \
2573 -e '/^#[ ]*endif/b' \
2575 %s | %"SVf" %"SVf" %s",
2577 Perl_sv_setpvf(aTHX_ cmd, "\
2578 %s %s -e '/^[^#]/b' \
2579 -e '/^#[ ]*include[ ]/b' \
2580 -e '/^#[ ]*define[ ]/b' \
2581 -e '/^#[ ]*if[ ]/b' \
2582 -e '/^#[ ]*ifdef[ ]/b' \
2583 -e '/^#[ ]*ifndef[ ]/b' \
2584 -e '/^#[ ]*else/b' \
2585 -e '/^#[ ]*elif[ ]/b' \
2586 -e '/^#[ ]*undef[ ]/b' \
2587 -e '/^#[ ]*endif/b' \
2589 %s | %"SVf" -C %"SVf" %s",
2596 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2598 scriptname, cpp, sv, CPPMINUS);
2599 PL_doextract = FALSE;
2600 #ifdef IAMSUID /* actually, this is caught earlier */
2601 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2603 (void)seteuid(PL_uid); /* musn't stay setuid root */
2606 (void)setreuid((Uid_t)-1, PL_uid);
2608 #ifdef HAS_SETRESUID
2609 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2611 PerlProc_setuid(PL_uid);
2615 if (PerlProc_geteuid() != PL_uid)
2616 Perl_croak(aTHX_ "Can't do seteuid!\n");
2618 #endif /* IAMSUID */
2619 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2623 else if (!*scriptname) {
2624 forbid_setid("program input from stdin");
2625 PL_rsfp = PerlIO_stdin();
2628 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2629 #if defined(HAS_FCNTL) && defined(F_SETFD)
2631 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2636 #ifndef IAMSUID /* in case script is not readable before setuid */
2638 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2639 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2642 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2643 (int)PERL_REVISION, (int)PERL_VERSION,
2644 (int)PERL_SUBVERSION), PL_origargv);
2645 Perl_croak(aTHX_ "Can't do setuid\n");
2649 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2650 CopFILE(PL_curcop), Strerror(errno));
2655 * I_SYSSTATVFS HAS_FSTATVFS
2657 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2658 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2659 * here so that metaconfig picks them up. */
2663 S_fd_on_nosuid_fs(pTHX_ int fd)
2665 int check_okay = 0; /* able to do all the required sys/libcalls */
2666 int on_nosuid = 0; /* the fd is on a nosuid fs */
2668 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2669 * fstatvfs() is UNIX98.
2670 * fstatfs() is 4.3 BSD.
2671 * ustat()+getmnt() is pre-4.3 BSD.
2672 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2673 * an irrelevant filesystem while trying to reach the right one.
2676 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2678 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2679 defined(HAS_FSTATVFS)
2680 # define FD_ON_NOSUID_CHECK_OKAY
2681 struct statvfs stfs;
2683 check_okay = fstatvfs(fd, &stfs) == 0;
2684 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2685 # endif /* fstatvfs */
2687 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2688 defined(PERL_MOUNT_NOSUID) && \
2689 defined(HAS_FSTATFS) && \
2690 defined(HAS_STRUCT_STATFS) && \
2691 defined(HAS_STRUCT_STATFS_F_FLAGS)
2692 # define FD_ON_NOSUID_CHECK_OKAY
2695 check_okay = fstatfs(fd, &stfs) == 0;
2696 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2697 # endif /* fstatfs */
2699 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2700 defined(PERL_MOUNT_NOSUID) && \
2701 defined(HAS_FSTAT) && \
2702 defined(HAS_USTAT) && \
2703 defined(HAS_GETMNT) && \
2704 defined(HAS_STRUCT_FS_DATA) && \
2706 # define FD_ON_NOSUID_CHECK_OKAY
2709 if (fstat(fd, &fdst) == 0) {
2711 if (ustat(fdst.st_dev, &us) == 0) {
2713 /* NOSTAT_ONE here because we're not examining fields which
2714 * vary between that case and STAT_ONE. */
2715 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2716 size_t cmplen = sizeof(us.f_fname);
2717 if (sizeof(fsd.fd_req.path) < cmplen)
2718 cmplen = sizeof(fsd.fd_req.path);
2719 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2720 fdst.st_dev == fsd.fd_req.dev) {
2722 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2728 # endif /* fstat+ustat+getmnt */
2730 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2731 defined(HAS_GETMNTENT) && \
2732 defined(HAS_HASMNTOPT) && \
2733 defined(MNTOPT_NOSUID)
2734 # define FD_ON_NOSUID_CHECK_OKAY
2735 FILE *mtab = fopen("/etc/mtab", "r");
2736 struct mntent *entry;
2737 struct stat stb, fsb;
2739 if (mtab && (fstat(fd, &stb) == 0)) {
2740 while (entry = getmntent(mtab)) {
2741 if (stat(entry->mnt_dir, &fsb) == 0
2742 && fsb.st_dev == stb.st_dev)
2744 /* found the filesystem */
2746 if (hasmntopt(entry, MNTOPT_NOSUID))
2749 } /* A single fs may well fail its stat(). */
2754 # endif /* getmntent+hasmntopt */
2757 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2760 #endif /* IAMSUID */
2763 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2769 /* do we need to emulate setuid on scripts? */
2771 /* This code is for those BSD systems that have setuid #! scripts disabled
2772 * in the kernel because of a security problem. Merely defining DOSUID
2773 * in perl will not fix that problem, but if you have disabled setuid
2774 * scripts in the kernel, this will attempt to emulate setuid and setgid
2775 * on scripts that have those now-otherwise-useless bits set. The setuid
2776 * root version must be called suidperl or sperlN.NNN. If regular perl
2777 * discovers that it has opened a setuid script, it calls suidperl with
2778 * the same argv that it had. If suidperl finds that the script it has
2779 * just opened is NOT setuid root, it sets the effective uid back to the
2780 * uid. We don't just make perl setuid root because that loses the
2781 * effective uid we had before invoking perl, if it was different from the
2784 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2785 * be defined in suidperl only. suidperl must be setuid root. The
2786 * Configure script will set this up for you if you want it.
2793 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2794 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2795 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2800 #ifndef HAS_SETREUID
2801 /* On this access check to make sure the directories are readable,
2802 * there is actually a small window that the user could use to make
2803 * filename point to an accessible directory. So there is a faint
2804 * chance that someone could execute a setuid script down in a
2805 * non-accessible directory. I don't know what to do about that.
2806 * But I don't think it's too important. The manual lies when
2807 * it says access() is useful in setuid programs.
2809 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2810 Perl_croak(aTHX_ "Permission denied");
2812 /* If we can swap euid and uid, then we can determine access rights
2813 * with a simple stat of the file, and then compare device and
2814 * inode to make sure we did stat() on the same file we opened.
2815 * Then we just have to make sure he or she can execute it.
2818 struct stat tmpstatbuf;
2822 setreuid(PL_euid,PL_uid) < 0
2825 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2828 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2829 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2830 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2831 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2832 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2833 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2834 Perl_croak(aTHX_ "Permission denied");
2836 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2837 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2838 (void)PerlIO_close(PL_rsfp);
2839 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2840 PerlIO_printf(PL_rsfp,
2841 "User %"Uid_t_f" tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2842 (Filename of set-id script was %s, uid %"Uid_t_f" gid %"Gid_t_f".)\n\nSincerely,\nperl\n",
2843 PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2844 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
2846 PL_statbuf.st_uid, PL_statbuf.st_gid);
2847 (void)PerlProc_pclose(PL_rsfp);
2849 Perl_croak(aTHX_ "Permission denied\n");
2853 setreuid(PL_uid,PL_euid) < 0
2855 # if defined(HAS_SETRESUID)
2856 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2859 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2860 Perl_croak(aTHX_ "Can't reswap uid and euid");
2861 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2862 Perl_croak(aTHX_ "Permission denied\n");
2864 #endif /* HAS_SETREUID */
2865 #endif /* IAMSUID */
2867 if (!S_ISREG(PL_statbuf.st_mode))
2868 Perl_croak(aTHX_ "Permission denied");
2869 if (PL_statbuf.st_mode & S_IWOTH)
2870 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2871 PL_doswitches = FALSE; /* -s is insecure in suid */
2872 CopLINE_inc(PL_curcop);
2873 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2874 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2875 Perl_croak(aTHX_ "No #! line");
2876 s = SvPV(PL_linestr,n_a)+2;
2878 while (!isSPACE(*s)) s++;
2879 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2880 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2881 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2882 Perl_croak(aTHX_ "Not a perl script");
2883 while (*s == ' ' || *s == '\t') s++;
2885 * #! arg must be what we saw above. They can invoke it by
2886 * mentioning suidperl explicitly, but they may not add any strange
2887 * arguments beyond what #! says if they do invoke suidperl that way.
2889 len = strlen(validarg);
2890 if (strEQ(validarg," PHOOEY ") ||
2891 strnNE(s,validarg,len) || !isSPACE(s[len]))
2892 Perl_croak(aTHX_ "Args must match #! line");
2895 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2896 PL_euid == PL_statbuf.st_uid)
2898 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2899 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2900 #endif /* IAMSUID */
2902 if (PL_euid) { /* oops, we're not the setuid root perl */
2903 (void)PerlIO_close(PL_rsfp);
2906 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2907 (int)PERL_REVISION, (int)PERL_VERSION,
2908 (int)PERL_SUBVERSION), PL_origargv);
2910 Perl_croak(aTHX_ "Can't do setuid\n");
2913 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2915 (void)setegid(PL_statbuf.st_gid);
2918 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2920 #ifdef HAS_SETRESGID
2921 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2923 PerlProc_setgid(PL_statbuf.st_gid);
2927 if (PerlProc_getegid() != PL_statbuf.st_gid)
2928 Perl_croak(aTHX_ "Can't do setegid!\n");
2930 if (PL_statbuf.st_mode & S_ISUID) {
2931 if (PL_statbuf.st_uid != PL_euid)
2933 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2936 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2938 #ifdef HAS_SETRESUID
2939 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2941 PerlProc_setuid(PL_statbuf.st_uid);
2945 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2946 Perl_croak(aTHX_ "Can't do seteuid!\n");
2948 else if (PL_uid) { /* oops, mustn't run as root */
2950 (void)seteuid((Uid_t)PL_uid);
2953 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2955 #ifdef HAS_SETRESUID
2956 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2958 PerlProc_setuid((Uid_t)PL_uid);
2962 if (PerlProc_geteuid() != PL_uid)
2963 Perl_croak(aTHX_ "Can't do seteuid!\n");
2966 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2967 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
2970 else if (PL_preprocess)
2971 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
2972 else if (fdscript >= 0)
2973 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
2975 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
2977 /* We absolutely must clear out any saved ids here, so we */
2978 /* exec the real perl, substituting fd script for scriptname. */
2979 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2980 PerlIO_rewind(PL_rsfp);
2981 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2982 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2983 if (!PL_origargv[which])
2984 Perl_croak(aTHX_ "Permission denied");
2985 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
2986 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
2987 #if defined(HAS_FCNTL) && defined(F_SETFD)
2988 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
2990 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
2991 (int)PERL_REVISION, (int)PERL_VERSION,
2992 (int)PERL_SUBVERSION), PL_origargv);/* try again */
2993 Perl_croak(aTHX_ "Can't do setuid\n");
2994 #endif /* IAMSUID */
2996 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
2997 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
2999 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3000 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3002 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3005 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3006 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3007 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3008 /* not set-id, must be wrapped */
3014 S_find_beginning(pTHX)
3016 register char *s, *s2;
3018 /* skip forward in input to the real script? */
3021 #ifdef MACOS_TRADITIONAL
3022 /* Since the Mac OS does not honor !# arguments for us, we do it ourselves */
3024 while (PL_doextract || gMacPerl_AlwaysExtract) {
3025 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3026 if (!gMacPerl_AlwaysExtract)
3027 Perl_croak(aTHX_ "No Perl script found in input\n");
3029 if (PL_doextract) /* require explicit override ? */
3030 if (!OverrideExtract(PL_origfilename))
3031 Perl_croak(aTHX_ "User aborted script\n");
3033 PL_doextract = FALSE;
3035 /* Pater peccavi, file does not have #! */
3036 PerlIO_rewind(PL_rsfp);
3041 while (PL_doextract) {
3042 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3043 Perl_croak(aTHX_ "No Perl script found in input\n");
3045 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3046 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3047 PL_doextract = FALSE;
3048 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3050 while (*s == ' ' || *s == '\t') s++;
3052 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3053 if (strnEQ(s2-4,"perl",4))
3055 while ((s = moreswitches(s)))
3066 PL_uid = PerlProc_getuid();
3067 PL_euid = PerlProc_geteuid();
3068 PL_gid = PerlProc_getgid();
3069 PL_egid = PerlProc_getegid();
3071 PL_uid |= PL_gid << 16;
3072 PL_euid |= PL_egid << 16;
3074 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3078 S_forbid_setid(pTHX_ char *s)
3080 if (PL_euid != PL_uid)
3081 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3082 if (PL_egid != PL_gid)
3083 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3087 Perl_init_debugger(pTHX)
3090 HV *ostash = PL_curstash;
3092 PL_curstash = PL_debstash;
3093 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3094 AvREAL_off(PL_dbargs);
3095 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3096 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3097 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3098 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3099 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3100 sv_setiv(PL_DBsingle, 0);
3101 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3102 sv_setiv(PL_DBtrace, 0);
3103 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3104 sv_setiv(PL_DBsignal, 0);
3105 PL_curstash = ostash;
3108 #ifndef STRESS_REALLOC
3109 #define REASONABLE(size) (size)
3111 #define REASONABLE(size) (1) /* unreasonable */
3115 Perl_init_stacks(pTHX)
3117 /* start with 128-item stack and 8K cxstack */
3118 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3119 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3120 PL_curstackinfo->si_type = PERLSI_MAIN;
3121 PL_curstack = PL_curstackinfo->si_stack;
3122 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3124 PL_stack_base = AvARRAY(PL_curstack);
3125 PL_stack_sp = PL_stack_base;
3126 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3128 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3131 PL_tmps_max = REASONABLE(128);
3133 New(54,PL_markstack,REASONABLE(32),I32);
3134 PL_markstack_ptr = PL_markstack;
3135 PL_markstack_max = PL_markstack + REASONABLE(32);
3139 New(54,PL_scopestack,REASONABLE(32),I32);
3140 PL_scopestack_ix = 0;
3141 PL_scopestack_max = REASONABLE(32);
3143 New(54,PL_savestack,REASONABLE(128),ANY);
3144 PL_savestack_ix = 0;
3145 PL_savestack_max = REASONABLE(128);
3147 New(54,PL_retstack,REASONABLE(16),OP*);
3149 PL_retstack_max = REASONABLE(16);
3158 while (PL_curstackinfo->si_next)
3159 PL_curstackinfo = PL_curstackinfo->si_next;
3160 while (PL_curstackinfo) {
3161 PERL_SI *p = PL_curstackinfo->si_prev;
3162 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3163 Safefree(PL_curstackinfo->si_cxstack);
3164 Safefree(PL_curstackinfo);
3165 PL_curstackinfo = p;
3167 Safefree(PL_tmps_stack);
3168 Safefree(PL_markstack);
3169 Safefree(PL_scopestack);
3170 Safefree(PL_savestack);
3171 Safefree(PL_retstack);
3175 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3186 lex_start(PL_linestr);
3188 PL_subname = newSVpvn("main",4);
3192 S_init_predump_symbols(pTHX)
3198 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3199 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3200 GvMULTI_on(PL_stdingv);
3201 io = GvIOp(PL_stdingv);
3202 IoIFP(io) = PerlIO_stdin();
3203 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3205 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3207 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3210 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3212 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3214 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3216 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3217 GvMULTI_on(PL_stderrgv);
3218 io = GvIOp(PL_stderrgv);
3219 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3220 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3222 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3224 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3227 Safefree(PL_osname);
3228 PL_osname = savepv(OSNAME);
3232 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3239 argc--,argv++; /* skip name of script */
3240 if (PL_doswitches) {
3241 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3244 if (argv[0][1] == '-' && !argv[0][2]) {
3248 if ((s = strchr(argv[0], '='))) {
3250 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3253 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3256 PL_toptarget = NEWSV(0,0);
3257 sv_upgrade(PL_toptarget, SVt_PVFM);
3258 sv_setpvn(PL_toptarget, "", 0);
3259 PL_bodytarget = NEWSV(0,0);
3260 sv_upgrade(PL_bodytarget, SVt_PVFM);
3261 sv_setpvn(PL_bodytarget, "", 0);
3262 PL_formtarget = PL_bodytarget;
3265 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3266 #ifdef MACOS_TRADITIONAL
3267 /* $0 is not majick on a Mac */
3268 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3270 sv_setpv(GvSV(tmpgv),PL_origfilename);
3271 magicname("0", "0", 1);
3274 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3276 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3278 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3280 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3281 GvMULTI_on(PL_argvgv);
3282 (void)gv_AVadd(PL_argvgv);
3283 av_clear(GvAVn(PL_argvgv));
3284 for (; argc > 0; argc--,argv++) {
3285 SV *sv = newSVpv(argv[0],0);
3286 av_push(GvAVn(PL_argvgv),sv);
3287 if (PL_widesyscalls)
3288 (void)sv_utf8_decode(sv);
3291 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3293 GvMULTI_on(PL_envgv);
3294 hv = GvHVn(PL_envgv);
3295 hv_magic(hv, PL_envgv, 'E');
3296 #if !defined( VMS) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) /* VMS doesn't have environ array */
3297 /* Note that if the supplied env parameter is actually a copy
3298 of the global environ then it may now point to free'd memory
3299 if the environment has been modified since. To avoid this
3300 problem we treat env==NULL as meaning 'use the default'
3305 environ[0] = Nullch;
3306 for (; *env; env++) {
3307 if (!(s = strchr(*env,'=')))
3313 sv = newSVpv(s--,0);
3314 (void)hv_store(hv, *env, s - *env, sv, 0);
3316 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3317 /* Sins of the RTL. See note in my_setenv(). */
3318 (void)PerlEnv_putenv(savepv(*env));
3322 #ifdef DYNAMIC_ENV_FETCH
3323 HvNAME(hv) = savepv(ENV_HV_NAME);
3327 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3328 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3332 S_init_perllib(pTHX)
3337 s = PerlEnv_getenv("PERL5LIB");
3339 incpush(s, TRUE, TRUE);
3341 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3343 /* Treat PERL5?LIB as a possible search list logical name -- the
3344 * "natural" VMS idiom for a Unix path string. We allow each
3345 * element to be a set of |-separated directories for compatibility.
3349 if (my_trnlnm("PERL5LIB",buf,0))
3350 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3352 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3356 /* Use the ~-expanded versions of APPLLIB (undocumented),
3357 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3360 incpush(APPLLIB_EXP, TRUE, TRUE);
3364 incpush(ARCHLIB_EXP, FALSE, FALSE);
3366 #ifdef MACOS_TRADITIONAL
3368 struct stat tmpstatbuf;
3369 SV * privdir = NEWSV(55, 0);
3370 char * macperl = PerlEnv_getenv("MACPERL");
3375 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3376 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3377 incpush(SvPVX(privdir), TRUE, FALSE);
3378 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3379 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3380 incpush(SvPVX(privdir), TRUE, FALSE);
3382 SvREFCNT_dec(privdir);
3385 incpush(":", FALSE, FALSE);
3388 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3391 incpush(PRIVLIB_EXP, TRUE, FALSE);
3393 incpush(PRIVLIB_EXP, FALSE, FALSE);
3397 /* sitearch is always relative to sitelib on Windows for
3398 * DLL-based path intuition to work correctly */
3399 # if !defined(WIN32)
3400 incpush(SITEARCH_EXP, FALSE, FALSE);
3406 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3408 incpush(SITELIB_EXP, FALSE, FALSE);
3412 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3413 incpush(SITELIB_STEM, FALSE, TRUE);
3416 #ifdef PERL_VENDORARCH_EXP
3417 /* vendorarch is always relative to vendorlib on Windows for
3418 * DLL-based path intuition to work correctly */
3419 # if !defined(WIN32)
3420 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3424 #ifdef PERL_VENDORLIB_EXP
3426 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3428 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3432 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3433 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3436 #ifdef PERL_OTHERLIBDIRS
3437 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3441 incpush(".", FALSE, FALSE);
3442 #endif /* MACOS_TRADITIONAL */
3446 # define PERLLIB_SEP ';'
3449 # define PERLLIB_SEP '|'
3451 # if defined(MACOS_TRADITIONAL)
3452 # define PERLLIB_SEP ','
3454 # define PERLLIB_SEP ':'
3458 #ifndef PERLLIB_MANGLE
3459 # define PERLLIB_MANGLE(s,n) (s)
3463 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3465 SV *subdir = Nullsv;
3470 if (addsubdirs || addoldvers) {
3471 subdir = sv_newmortal();
3474 /* Break at all separators */
3476 SV *libdir = NEWSV(55,0);
3479 /* skip any consecutive separators */
3480 while ( *p == PERLLIB_SEP ) {
3481 /* Uncomment the next line for PATH semantics */
3482 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3486 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3487 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3492 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3493 p = Nullch; /* break out */
3495 #ifdef MACOS_TRADITIONAL
3496 if (!strchr(SvPVX(libdir), ':'))
3497 sv_insert(libdir, 0, 0, ":", 1);
3498 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3499 sv_catpv(libdir, ":");
3503 * BEFORE pushing libdir onto @INC we may first push version- and
3504 * archname-specific sub-directories.
3506 if (addsubdirs || addoldvers) {
3507 #ifdef PERL_INC_VERSION_LIST
3508 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3509 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3510 const char **incver;
3512 struct stat tmpstatbuf;
3517 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3519 while (unix[len-1] == '/') len--; /* Cosmetic */
3520 sv_usepvn(libdir,unix,len);
3523 PerlIO_printf(Perl_error_log,
3524 "Failed to unixify @INC element \"%s\"\n",
3528 #ifdef MACOS_TRADITIONAL
3529 #define PERL_AV_SUFFIX_FMT ""
3530 #define PERL_ARCH_FMT ":%s"
3532 #define PERL_AV_SUFFIX_FMT "/"
3533 #define PERL_ARCH_FMT "/%s"
3535 /* .../version/archname if -d .../version/archname */
3536 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT PERL_ARCH_FMT,
3538 (int)PERL_REVISION, (int)PERL_VERSION,
3539 (int)PERL_SUBVERSION, ARCHNAME);
3540 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3541 S_ISDIR(tmpstatbuf.st_mode))
3542 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3544 /* .../version if -d .../version */
3545 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT, libdir,
3546 (int)PERL_REVISION, (int)PERL_VERSION,
3547 (int)PERL_SUBVERSION);
3548 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3549 S_ISDIR(tmpstatbuf.st_mode))
3550 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3552 /* .../archname if -d .../archname */
3553 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3554 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3555 S_ISDIR(tmpstatbuf.st_mode))
3556 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3559 #ifdef PERL_INC_VERSION_LIST
3561 for (incver = incverlist; *incver; incver++) {
3562 /* .../xxx if -d .../xxx */
3563 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3564 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3565 S_ISDIR(tmpstatbuf.st_mode))
3566 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3572 /* finally push this lib directory on the end of @INC */
3573 av_push(GvAVn(PL_incgv), libdir);
3578 STATIC struct perl_thread *
3579 S_init_main_thread(pTHX)
3581 #if !defined(PERL_IMPLICIT_CONTEXT)
3582 struct perl_thread *thr;
3586 Newz(53, thr, 1, struct perl_thread);
3587 PL_curcop = &PL_compiling;
3588 thr->interp = PERL_GET_INTERP;
3589 thr->cvcache = newHV();
3590 thr->threadsv = newAV();
3591 /* thr->threadsvp is set when find_threadsv is called */
3592 thr->specific = newAV();
3593 thr->flags = THRf_R_JOINABLE;
3594 MUTEX_INIT(&thr->mutex);
3595 /* Handcraft thrsv similarly to mess_sv */
3596 New(53, PL_thrsv, 1, SV);
3597 Newz(53, xpv, 1, XPV);
3598 SvFLAGS(PL_thrsv) = SVt_PV;
3599 SvANY(PL_thrsv) = (void*)xpv;
3600 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3601 SvPVX(PL_thrsv) = (char*)thr;
3602 SvCUR_set(PL_thrsv, sizeof(thr));
3603 SvLEN_set(PL_thrsv, sizeof(thr));
3604 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3605 thr->oursv = PL_thrsv;
3606 PL_chopset = " \n-";
3609 MUTEX_LOCK(&PL_threads_mutex);
3614 MUTEX_UNLOCK(&PL_threads_mutex);
3616 #ifdef HAVE_THREAD_INTERN
3617 Perl_init_thread_intern(thr);
3620 #ifdef SET_THREAD_SELF
3621 SET_THREAD_SELF(thr);
3623 thr->self = pthread_self();
3624 #endif /* SET_THREAD_SELF */
3628 * These must come after the SET_THR because sv_setpvn does
3629 * SvTAINT and the taint fields require dTHR.
3631 PL_toptarget = NEWSV(0,0);
3632 sv_upgrade(PL_toptarget, SVt_PVFM);
3633 sv_setpvn(PL_toptarget, "", 0);
3634 PL_bodytarget = NEWSV(0,0);
3635 sv_upgrade(PL_bodytarget, SVt_PVFM);
3636 sv_setpvn(PL_bodytarget, "", 0);
3637 PL_formtarget = PL_bodytarget;
3638 thr->errsv = newSVpvn("", 0);
3639 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3642 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3643 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3644 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3645 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3646 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3648 PL_reginterp_cnt = 0;
3652 #endif /* USE_THREADS */
3655 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3659 line_t oldline = CopLINE(PL_curcop);
3665 while (AvFILL(paramList) >= 0) {
3666 cv = (CV*)av_shift(paramList);
3668 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3669 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3675 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3679 (void)SvPV(atsv, len);
3682 PL_curcop = &PL_compiling;
3683 CopLINE_set(PL_curcop, oldline);
3684 if (paramList == PL_beginav)
3685 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3687 Perl_sv_catpvf(aTHX_ atsv,
3688 "%s failed--call queue aborted",
3689 paramList == PL_checkav ? "CHECK"
3690 : paramList == PL_initav ? "INIT"
3692 while (PL_scopestack_ix > oldscope)
3695 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3702 /* my_exit() was called */
3703 while (PL_scopestack_ix > oldscope)
3706 PL_curstash = PL_defstash;
3707 PL_curcop = &PL_compiling;
3708 CopLINE_set(PL_curcop, oldline);
3710 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3711 if (paramList == PL_beginav)
3712 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3714 Perl_croak(aTHX_ "%s failed--call queue aborted",
3715 paramList == PL_checkav ? "CHECK"
3716 : paramList == PL_initav ? "INIT"
3723 PL_curcop = &PL_compiling;
3724 CopLINE_set(PL_curcop, oldline);
3727 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3735 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3737 S_vcall_list_body(pTHX_ va_list args)
3739 CV *cv = va_arg(args, CV*);
3740 return call_list_body(cv);
3745 S_call_list_body(pTHX_ CV *cv)
3747 PUSHMARK(PL_stack_sp);
3748 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3753 Perl_my_exit(pTHX_ U32 status)
3757 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3758 thr, (unsigned long) status));
3767 STATUS_NATIVE_SET(status);
3774 Perl_my_failure_exit(pTHX)
3777 if (vaxc$errno & 1) {
3778 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3779 STATUS_NATIVE_SET(44);
3782 if (!vaxc$errno && errno) /* unlikely */
3783 STATUS_NATIVE_SET(44);
3785 STATUS_NATIVE_SET(vaxc$errno);
3790 STATUS_POSIX_SET(errno);
3792 exitstatus = STATUS_POSIX >> 8;
3793 if (exitstatus & 255)
3794 STATUS_POSIX_SET(exitstatus);
3796 STATUS_POSIX_SET(255);
3803 S_my_exit_jump(pTHX)
3806 register PERL_CONTEXT *cx;
3811 SvREFCNT_dec(PL_e_script);
3812 PL_e_script = Nullsv;
3815 POPSTACK_TO(PL_mainstack);
3816 if (cxstack_ix >= 0) {
3819 POPBLOCK(cx,PL_curpm);
3831 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3834 p = SvPVX(PL_e_script);
3835 nl = strchr(p, '\n');
3836 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3838 filter_del(read_e_script);
3841 sv_catpvn(buf_sv, p, nl-p);
3842 sv_chop(PL_e_script, nl);