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);
1189 #if defined(SIGCHLD) || defined(SIGCLD)
1192 # define SIGCHLD SIGCLD
1194 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1195 if (sigstate == SIG_IGN) {
1196 if (ckWARN(WARN_SIGNAL))
1197 Perl_warner(aTHX_ WARN_SIGNAL,
1198 "Can't ignore signal CHLD, forcing to default");
1199 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1205 #ifdef MACOS_TRADITIONAL
1206 if (PL_doextract || gMacPerl_AlwaysExtract) {
1211 if (cddir && PerlDir_chdir(cddir) < 0)
1212 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1216 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1217 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1218 CvUNIQUE_on(PL_compcv);
1220 PL_comppad = newAV();
1221 av_push(PL_comppad, Nullsv);
1222 PL_curpad = AvARRAY(PL_comppad);
1223 PL_comppad_name = newAV();
1224 PL_comppad_name_fill = 0;
1225 PL_min_intro_pending = 0;
1228 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1229 PL_curpad[0] = (SV*)newAV();
1230 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1231 CvOWNER(PL_compcv) = 0;
1232 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1233 MUTEX_INIT(CvMUTEXP(PL_compcv));
1234 #endif /* USE_THREADS */
1236 comppadlist = newAV();
1237 AvREAL_off(comppadlist);
1238 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1239 av_store(comppadlist, 1, (SV*)PL_comppad);
1240 CvPADLIST(PL_compcv) = comppadlist;
1242 boot_core_UNIVERSAL();
1244 boot_core_xsutils();
1248 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1250 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__)
1259 init_predump_symbols();
1260 /* init_postdump_symbols not currently designed to be called */
1261 /* more than once (ENV isn't cleared first, for example) */
1262 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1264 init_postdump_symbols(argc,argv,env);
1268 /* now parse the script */
1270 SETERRNO(0,SS$_NORMAL);
1272 #ifdef MACOS_TRADITIONAL
1273 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1275 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1277 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1278 MacPerl_MPWFileName(PL_origfilename));
1282 if (yyparse() || PL_error_count) {
1284 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1286 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1291 CopLINE_set(PL_curcop, 0);
1292 PL_curstash = PL_defstash;
1293 PL_preprocess = FALSE;
1295 SvREFCNT_dec(PL_e_script);
1296 PL_e_script = Nullsv;
1299 /* now that script is parsed, we can modify record separator */
1300 SvREFCNT_dec(PL_rs);
1301 PL_rs = SvREFCNT_inc(PL_nrs);
1302 sv_setsv(get_sv("/", TRUE), PL_rs);
1307 SAVECOPFILE(PL_curcop);
1308 SAVECOPLINE(PL_curcop);
1309 gv_check(PL_defstash);
1316 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1317 dump_mstats("after compilation:");
1326 =for apidoc perl_run
1328 Tells a Perl interpreter to run. See L<perlembed>.
1344 oldscope = PL_scopestack_ix;
1346 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1348 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1354 cxstack_ix = -1; /* start context stack again */
1356 case 0: /* normal completion */
1357 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1362 case 2: /* my_exit() */
1363 while (PL_scopestack_ix > oldscope)
1366 PL_curstash = PL_defstash;
1367 if (PL_endav && !PL_minus_c)
1368 call_list(oldscope, PL_endav);
1370 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1371 dump_mstats("after execution: ");
1373 ret = STATUS_NATIVE_EXPORT;
1377 POPSTACK_TO(PL_mainstack);
1380 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1390 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1392 S_vrun_body(pTHX_ va_list args)
1394 I32 oldscope = va_arg(args, I32);
1396 return run_body(oldscope);
1402 S_run_body(pTHX_ I32 oldscope)
1406 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1407 PL_sawampersand ? "Enabling" : "Omitting"));
1409 if (!PL_restartop) {
1410 DEBUG_x(dump_all());
1411 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1412 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1416 #ifdef MACOS_TRADITIONAL
1417 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1419 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1423 if (PERLDB_SINGLE && PL_DBsingle)
1424 sv_setiv(PL_DBsingle, 1);
1426 call_list(oldscope, PL_initav);
1432 PL_op = PL_restartop;
1436 else if (PL_main_start) {
1437 CvDEPTH(PL_main_cv) = 1;
1438 PL_op = PL_main_start;
1448 =for apidoc p||get_sv
1450 Returns the SV of the specified Perl scalar. If C<create> is set and the
1451 Perl variable does not exist then it will be created. If C<create> is not
1452 set and the variable does not exist then NULL is returned.
1458 Perl_get_sv(pTHX_ const char *name, I32 create)
1462 if (name[1] == '\0' && !isALPHA(name[0])) {
1463 PADOFFSET tmp = find_threadsv(name);
1464 if (tmp != NOT_IN_PAD) {
1466 return THREADSV(tmp);
1469 #endif /* USE_THREADS */
1470 gv = gv_fetchpv(name, create, SVt_PV);
1477 =for apidoc p||get_av
1479 Returns the AV of the specified Perl array. If C<create> is set and the
1480 Perl variable does not exist then it will be created. If C<create> is not
1481 set and the variable does not exist then NULL is returned.
1487 Perl_get_av(pTHX_ const char *name, I32 create)
1489 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1498 =for apidoc p||get_hv
1500 Returns the HV of the specified Perl hash. If C<create> is set and the
1501 Perl variable does not exist then it will be created. If C<create> is not
1502 set and the variable does not exist then NULL is returned.
1508 Perl_get_hv(pTHX_ const char *name, I32 create)
1510 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1519 =for apidoc p||get_cv
1521 Returns the CV of the specified Perl subroutine. If C<create> is set and
1522 the Perl subroutine does not exist then it will be declared (which has the
1523 same effect as saying C<sub name;>). If C<create> is not set and the
1524 subroutine does not exist then NULL is returned.
1530 Perl_get_cv(pTHX_ const char *name, I32 create)
1532 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1533 /* XXX unsafe for threads if eval_owner isn't held */
1534 /* XXX this is probably not what they think they're getting.
1535 * It has the same effect as "sub name;", i.e. just a forward
1537 if (create && !GvCVu(gv))
1538 return newSUB(start_subparse(FALSE, 0),
1539 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1547 /* Be sure to refetch the stack pointer after calling these routines. */
1550 =for apidoc p||call_argv
1552 Performs a callback to the specified Perl sub. See L<perlcall>.
1558 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1560 /* See G_* flags in cop.h */
1561 /* null terminated arg list */
1568 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1573 return call_pv(sub_name, flags);
1577 =for apidoc p||call_pv
1579 Performs a callback to the specified Perl sub. See L<perlcall>.
1585 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1586 /* name of the subroutine */
1587 /* See G_* flags in cop.h */
1589 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1593 =for apidoc p||call_method
1595 Performs a callback to the specified Perl method. The blessed object must
1596 be on the stack. See L<perlcall>.
1602 Perl_call_method(pTHX_ const char *methname, I32 flags)
1603 /* name of the subroutine */
1604 /* See G_* flags in cop.h */
1606 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1609 /* May be called with any of a CV, a GV, or an SV containing the name. */
1611 =for apidoc p||call_sv
1613 Performs a callback to the Perl sub whose name is in the SV. See
1620 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1621 /* See G_* flags in cop.h */
1624 LOGOP myop; /* fake syntax tree node */
1629 bool oldcatch = CATCH_GET;
1634 if (flags & G_DISCARD) {
1639 Zero(&myop, 1, LOGOP);
1640 myop.op_next = Nullop;
1641 if (!(flags & G_NOARGS))
1642 myop.op_flags |= OPf_STACKED;
1643 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1644 (flags & G_ARRAY) ? OPf_WANT_LIST :
1649 EXTEND(PL_stack_sp, 1);
1650 *++PL_stack_sp = sv;
1652 oldscope = PL_scopestack_ix;
1654 if (PERLDB_SUB && PL_curstash != PL_debstash
1655 /* Handle first BEGIN of -d. */
1656 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1657 /* Try harder, since this may have been a sighandler, thus
1658 * curstash may be meaningless. */
1659 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1660 && !(flags & G_NODEBUG))
1661 PL_op->op_private |= OPpENTERSUB_DB;
1663 if (flags & G_METHOD) {
1664 Zero(&method_op, 1, UNOP);
1665 method_op.op_next = PL_op;
1666 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1667 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1668 PL_op = (OP*)&method_op;
1671 if (!(flags & G_EVAL)) {
1673 call_body((OP*)&myop, FALSE);
1674 retval = PL_stack_sp - (PL_stack_base + oldmark);
1675 CATCH_SET(oldcatch);
1678 myop.op_other = (OP*)&myop;
1680 /* we're trying to emulate pp_entertry() here */
1682 register PERL_CONTEXT *cx;
1683 I32 gimme = GIMME_V;
1688 push_return(Nullop);
1689 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1691 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1693 PL_in_eval = EVAL_INEVAL;
1694 if (flags & G_KEEPERR)
1695 PL_in_eval |= EVAL_KEEPERR;
1701 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1703 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1710 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1712 call_body((OP*)&myop, FALSE);
1714 retval = PL_stack_sp - (PL_stack_base + oldmark);
1715 if (!(flags & G_KEEPERR))
1722 /* my_exit() was called */
1723 PL_curstash = PL_defstash;
1726 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1727 Perl_croak(aTHX_ "Callback called exit");
1732 PL_op = PL_restartop;
1736 PL_stack_sp = PL_stack_base + oldmark;
1737 if (flags & G_ARRAY)
1741 *++PL_stack_sp = &PL_sv_undef;
1746 if (PL_scopestack_ix > oldscope) {
1750 register PERL_CONTEXT *cx;
1762 if (flags & G_DISCARD) {
1763 PL_stack_sp = PL_stack_base + oldmark;
1772 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1774 S_vcall_body(pTHX_ va_list args)
1776 OP *myop = va_arg(args, OP*);
1777 int is_eval = va_arg(args, int);
1779 call_body(myop, is_eval);
1785 S_call_body(pTHX_ OP *myop, int is_eval)
1789 if (PL_op == myop) {
1791 PL_op = Perl_pp_entereval(aTHX);
1793 PL_op = Perl_pp_entersub(aTHX);
1799 /* Eval a string. The G_EVAL flag is always assumed. */
1802 =for apidoc p||eval_sv
1804 Tells Perl to C<eval> the string in the SV.
1810 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1812 /* See G_* flags in cop.h */
1815 UNOP myop; /* fake syntax tree node */
1816 I32 oldmark = SP - PL_stack_base;
1823 if (flags & G_DISCARD) {
1830 Zero(PL_op, 1, UNOP);
1831 EXTEND(PL_stack_sp, 1);
1832 *++PL_stack_sp = sv;
1833 oldscope = PL_scopestack_ix;
1835 if (!(flags & G_NOARGS))
1836 myop.op_flags = OPf_STACKED;
1837 myop.op_next = Nullop;
1838 myop.op_type = OP_ENTEREVAL;
1839 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1840 (flags & G_ARRAY) ? OPf_WANT_LIST :
1842 if (flags & G_KEEPERR)
1843 myop.op_flags |= OPf_SPECIAL;
1845 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1847 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1854 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1856 call_body((OP*)&myop,TRUE);
1858 retval = PL_stack_sp - (PL_stack_base + oldmark);
1859 if (!(flags & G_KEEPERR))
1866 /* my_exit() was called */
1867 PL_curstash = PL_defstash;
1870 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1871 Perl_croak(aTHX_ "Callback called exit");
1876 PL_op = PL_restartop;
1880 PL_stack_sp = PL_stack_base + oldmark;
1881 if (flags & G_ARRAY)
1885 *++PL_stack_sp = &PL_sv_undef;
1891 if (flags & G_DISCARD) {
1892 PL_stack_sp = PL_stack_base + oldmark;
1902 =for apidoc p||eval_pv
1904 Tells Perl to C<eval> the given string and return an SV* result.
1910 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1913 SV* sv = newSVpv(p, 0);
1916 eval_sv(sv, G_SCALAR);
1923 if (croak_on_error && SvTRUE(ERRSV)) {
1925 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1931 /* Require a module. */
1934 =for apidoc p||require_pv
1936 Tells Perl to C<require> a module.
1942 Perl_require_pv(pTHX_ const char *pv)
1946 PUSHSTACKi(PERLSI_REQUIRE);
1948 sv = sv_newmortal();
1949 sv_setpv(sv, "require '");
1952 eval_sv(sv, G_DISCARD);
1958 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
1962 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
1963 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1967 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
1969 /* This message really ought to be max 23 lines.
1970 * Removed -h because the user already knows that opton. Others? */
1972 static char *usage_msg[] = {
1973 "-0[octal] specify record separator (\\0, if no argument)",
1974 "-a autosplit mode with -n or -p (splits $_ into @F)",
1975 "-C enable native wide character system interfaces",
1976 "-c check syntax only (runs BEGIN and CHECK blocks)",
1977 "-d[:debugger] run program under debugger",
1978 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1979 "-e 'command' one line of program (several -e's allowed, omit programfile)",
1980 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
1981 "-i[extension] edit <> files in place (makes backup if extension supplied)",
1982 "-Idirectory specify @INC/#include directory (several -I's allowed)",
1983 "-l[octal] enable line ending processing, specifies line terminator",
1984 "-[mM][-]module execute `use/no module...' before executing program",
1985 "-n assume 'while (<>) { ... }' loop around program",
1986 "-p assume loop like -n but print line also, like sed",
1987 "-P run program through C preprocessor before compilation",
1988 "-s enable rudimentary parsing for switches after programfile",
1989 "-S look for programfile using PATH environment variable",
1990 "-T enable tainting checks",
1991 "-u dump core after parsing program",
1992 "-U allow unsafe operations",
1993 "-v print version, subversion (includes VERY IMPORTANT perl info)",
1994 "-V[:variable] print configuration summary (or a single Config.pm variable)",
1995 "-w enable many useful warnings (RECOMMENDED)",
1996 "-W enable all warnings",
1997 "-X disable all warnings",
1998 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2002 char **p = usage_msg;
2004 PerlIO_printf(PerlIO_stdout(),
2005 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2008 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2011 /* This routine handles any switches that can be given during run */
2014 Perl_moreswitches(pTHX_ char *s)
2023 numlen = 0; /* disallow underscores */
2024 rschar = (U32)scan_oct(s, 4, &numlen);
2025 SvREFCNT_dec(PL_nrs);
2026 if (rschar & ~((U8)~0))
2027 PL_nrs = &PL_sv_undef;
2028 else if (!rschar && numlen >= 2)
2029 PL_nrs = newSVpvn("", 0);
2032 PL_nrs = newSVpvn(&ch, 1);
2037 PL_widesyscalls = TRUE;
2042 PL_splitstr = savepv(s + 1);
2056 if (*s == ':' || *s == '=') {
2057 my_setenv("PERL5DB", Perl_form(aTHX_ "use Devel::%s;", ++s));
2061 PL_perldb = PERLDB_ALL;
2069 if (isALPHA(s[1])) {
2070 static char debopts[] = "psltocPmfrxuLHXDS";
2073 for (s++; *s && (d = strchr(debopts,*s)); s++)
2074 PL_debug |= 1 << (d - debopts);
2077 PL_debug = atoi(s+1);
2078 for (s++; isDIGIT(*s); s++) ;
2080 PL_debug |= 0x80000000;
2083 if (ckWARN_d(WARN_DEBUGGING))
2084 Perl_warner(aTHX_ WARN_DEBUGGING,
2085 "Recompile perl with -DDEBUGGING to use -D switch\n");
2086 for (s++; isALNUM(*s); s++) ;
2092 usage(PL_origargv[0]);
2096 Safefree(PL_inplace);
2097 PL_inplace = savepv(s+1);
2099 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2102 if (*s == '-') /* Additional switches on #! line. */
2106 case 'I': /* -I handled both here and in parse_perl() */
2109 while (*s && isSPACE(*s))
2114 /* ignore trailing spaces (possibly followed by other switches) */
2116 for (e = p; *e && !isSPACE(*e); e++) ;
2120 } while (*p && *p != '-');
2121 e = savepvn(s, e-s);
2122 incpush(e, TRUE, TRUE);
2129 Perl_croak(aTHX_ "No directory specified for -I");
2137 PL_ors = savepv("\n");
2139 numlen = 0; /* disallow underscores */
2140 *PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2145 if (RsPARA(PL_nrs)) {
2150 PL_ors = SvPV(PL_nrs, PL_orslen);
2151 PL_ors = savepvn(PL_ors, PL_orslen);
2155 forbid_setid("-M"); /* XXX ? */
2158 forbid_setid("-m"); /* XXX ? */
2163 /* -M-foo == 'no foo' */
2164 if (*s == '-') { use = "no "; ++s; }
2165 sv = newSVpv(use,0);
2167 /* We allow -M'Module qw(Foo Bar)' */
2168 while(isALNUM(*s) || *s==':') ++s;
2170 sv_catpv(sv, start);
2171 if (*(start-1) == 'm') {
2173 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2174 sv_catpv( sv, " ()");
2178 Perl_croak(aTHX_ "Module name required with -%c option",
2180 sv_catpvn(sv, start, s-start);
2181 sv_catpv(sv, " split(/,/,q{");
2187 PL_preambleav = newAV();
2188 av_push(PL_preambleav, sv);
2191 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2203 PL_doswitches = TRUE;
2208 Perl_croak(aTHX_ "Too late for \"-T\" option");
2212 #ifdef MACOS_TRADITIONAL
2213 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2215 PL_do_undump = TRUE;
2223 PerlIO_printf(PerlIO_stdout(),
2224 Perl_form(aTHX_ "\nThis is perl, v%vd built for %s",
2225 PL_patchlevel, ARCHNAME));
2226 #if defined(LOCAL_PATCH_COUNT)
2227 if (LOCAL_PATCH_COUNT > 0)
2228 PerlIO_printf(PerlIO_stdout(),
2229 "\n(with %d registered patch%s, "
2230 "see perl -V for more detail)",
2231 (int)LOCAL_PATCH_COUNT,
2232 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2235 PerlIO_printf(PerlIO_stdout(),
2236 "\n\nCopyright 1987-2000, Larry Wall\n");
2238 PerlIO_printf(PerlIO_stdout(),
2239 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2242 PerlIO_printf(PerlIO_stdout(),
2243 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2244 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2247 PerlIO_printf(PerlIO_stdout(),
2248 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2249 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2252 PerlIO_printf(PerlIO_stdout(),
2253 "atariST series port, ++jrb bammi@cadence.com\n");
2256 PerlIO_printf(PerlIO_stdout(),
2257 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2260 PerlIO_printf(PerlIO_stdout(),
2261 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
2264 PerlIO_printf(PerlIO_stdout(),
2265 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2268 PerlIO_printf(PerlIO_stdout(),
2269 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2272 PerlIO_printf(PerlIO_stdout(),
2273 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2276 PerlIO_printf(PerlIO_stdout(),
2277 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2280 PerlIO_printf(PerlIO_stdout(),
2281 "MiNT port by Guido Flohr, 1997-1999\n");
2284 PerlIO_printf(PerlIO_stdout(),
2285 "EPOC port by Olaf Flebbe, 1999-2000\n");
2287 #ifdef BINARY_BUILD_NOTICE
2288 BINARY_BUILD_NOTICE;
2290 PerlIO_printf(PerlIO_stdout(),
2292 Perl may be copied only under the terms of either the Artistic License or the\n\
2293 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
2294 Complete documentation for Perl, including FAQ lists, should be found on\n\
2295 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2296 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2299 if (! (PL_dowarn & G_WARN_ALL_MASK))
2300 PL_dowarn |= G_WARN_ON;
2304 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2305 PL_compiling.cop_warnings = pWARN_ALL ;
2309 PL_dowarn = G_WARN_ALL_OFF;
2310 PL_compiling.cop_warnings = pWARN_NONE ;
2315 if (s[1] == '-') /* Additional switches on #! line. */
2320 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2326 #ifdef ALTERNATE_SHEBANG
2327 case 'S': /* OS/2 needs -S on "extproc" line. */
2335 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2340 /* compliments of Tom Christiansen */
2342 /* unexec() can be found in the Gnu emacs distribution */
2343 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2346 Perl_my_unexec(pTHX)
2354 prog = newSVpv(BIN_EXP, 0);
2355 sv_catpv(prog, "/perl");
2356 file = newSVpv(PL_origfilename, 0);
2357 sv_catpv(file, ".perldump");
2359 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2360 /* unexec prints msg to stderr in case of failure */
2361 PerlProc_exit(status);
2364 # include <lib$routines.h>
2365 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2367 ABORT(); /* for use with undump */
2372 /* initialize curinterp */
2377 #ifdef PERL_OBJECT /* XXX kludge */
2380 PL_chopset = " \n-"; \
2381 PL_copline = NOLINE; \
2382 PL_curcop = &PL_compiling;\
2383 PL_curcopdb = NULL; \
2385 PL_dumpindent = 4; \
2386 PL_laststatval = -1; \
2387 PL_laststype = OP_STAT; \
2388 PL_maxscream = -1; \
2389 PL_maxsysfd = MAXSYSFD; \
2390 PL_statname = Nullsv; \
2391 PL_tmps_floor = -1; \
2393 PL_op_mask = NULL; \
2394 PL_laststatval = -1; \
2395 PL_laststype = OP_STAT; \
2396 PL_mess_sv = Nullsv; \
2397 PL_splitstr = " "; \
2398 PL_generation = 100; \
2399 PL_exitlist = NULL; \
2400 PL_exitlistlen = 0; \
2402 PL_in_clean_objs = FALSE; \
2403 PL_in_clean_all = FALSE; \
2404 PL_profiledata = NULL; \
2406 PL_rsfp_filters = Nullav; \
2411 # ifdef MULTIPLICITY
2412 # define PERLVAR(var,type)
2413 # define PERLVARA(var,n,type)
2414 # if defined(PERL_IMPLICIT_CONTEXT)
2415 # if defined(USE_THREADS)
2416 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2417 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2418 # else /* !USE_THREADS */
2419 # define PERLVARI(var,type,init) aTHX->var = init;
2420 # define PERLVARIC(var,type,init) aTHX->var = init;
2421 # endif /* USE_THREADS */
2423 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2424 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2426 # include "intrpvar.h"
2427 # ifndef USE_THREADS
2428 # include "thrdvar.h"
2435 # define PERLVAR(var,type)
2436 # define PERLVARA(var,n,type)
2437 # define PERLVARI(var,type,init) PL_##var = init;
2438 # define PERLVARIC(var,type,init) PL_##var = init;
2439 # include "intrpvar.h"
2440 # ifndef USE_THREADS
2441 # include "thrdvar.h"
2453 S_init_main_stash(pTHX)
2458 /* Note that strtab is a rather special HV. Assumptions are made
2459 about not iterating on it, and not adding tie magic to it.
2460 It is properly deallocated in perl_destruct() */
2461 PL_strtab = newHV();
2463 MUTEX_INIT(&PL_strtab_mutex);
2465 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2466 hv_ksplit(PL_strtab, 512);
2468 PL_curstash = PL_defstash = newHV();
2469 PL_curstname = newSVpvn("main",4);
2470 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2471 SvREFCNT_dec(GvHV(gv));
2472 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2474 HvNAME(PL_defstash) = savepv("main");
2475 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2476 GvMULTI_on(PL_incgv);
2477 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2478 GvMULTI_on(PL_hintgv);
2479 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2480 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2481 GvMULTI_on(PL_errgv);
2482 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2483 GvMULTI_on(PL_replgv);
2484 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2485 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2486 sv_setpvn(ERRSV, "", 0);
2487 PL_curstash = PL_defstash;
2488 CopSTASH_set(&PL_compiling, PL_defstash);
2489 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2490 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2491 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2492 /* We must init $/ before switches are processed. */
2493 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2497 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2504 PL_origfilename = savepv("-e");
2507 /* if find_script() returns, it returns a malloc()-ed value */
2508 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2510 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2511 char *s = scriptname + 8;
2512 *fdscript = atoi(s);
2516 scriptname = savepv(s + 1);
2517 Safefree(PL_origfilename);
2518 PL_origfilename = scriptname;
2524 Safefree(CopFILE(PL_curcop));
2526 SvREFCNT_dec(CopFILEGV(PL_curcop));
2528 CopFILE_set(PL_curcop, PL_origfilename);
2529 if (strEQ(PL_origfilename,"-"))
2531 if (*fdscript >= 0) {
2532 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2533 #if defined(HAS_FCNTL) && defined(F_SETFD)
2535 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2538 else if (PL_preprocess) {
2539 char *cpp_cfg = CPPSTDIN;
2540 SV *cpp = newSVpvn("",0);
2541 SV *cmd = NEWSV(0,0);
2543 if (strEQ(cpp_cfg, "cppstdin"))
2544 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2545 sv_catpv(cpp, cpp_cfg);
2547 sv_catpvn(sv, "-I", 2);
2548 sv_catpv(sv,PRIVLIB_EXP);
2550 #if defined(MSDOS) || defined(WIN32)
2551 Perl_sv_setpvf(aTHX_ cmd, "\
2552 sed %s -e \"/^[^#]/b\" \
2553 -e \"/^#[ ]*include[ ]/b\" \
2554 -e \"/^#[ ]*define[ ]/b\" \
2555 -e \"/^#[ ]*if[ ]/b\" \
2556 -e \"/^#[ ]*ifdef[ ]/b\" \
2557 -e \"/^#[ ]*ifndef[ ]/b\" \
2558 -e \"/^#[ ]*else/b\" \
2559 -e \"/^#[ ]*elif[ ]/b\" \
2560 -e \"/^#[ ]*undef[ ]/b\" \
2561 -e \"/^#[ ]*endif/b\" \
2563 %s | %"SVf" -C %"SVf" %s",
2564 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2567 Perl_sv_setpvf(aTHX_ cmd, "\
2568 %s %s -e '/^[^#]/b' \
2569 -e '/^#[ ]*include[ ]/b' \
2570 -e '/^#[ ]*define[ ]/b' \
2571 -e '/^#[ ]*if[ ]/b' \
2572 -e '/^#[ ]*ifdef[ ]/b' \
2573 -e '/^#[ ]*ifndef[ ]/b' \
2574 -e '/^#[ ]*else/b' \
2575 -e '/^#[ ]*elif[ ]/b' \
2576 -e '/^#[ ]*undef[ ]/b' \
2577 -e '/^#[ ]*endif/b' \
2579 %s | %"SVf" %"SVf" %s",
2581 Perl_sv_setpvf(aTHX_ cmd, "\
2582 %s %s -e '/^[^#]/b' \
2583 -e '/^#[ ]*include[ ]/b' \
2584 -e '/^#[ ]*define[ ]/b' \
2585 -e '/^#[ ]*if[ ]/b' \
2586 -e '/^#[ ]*ifdef[ ]/b' \
2587 -e '/^#[ ]*ifndef[ ]/b' \
2588 -e '/^#[ ]*else/b' \
2589 -e '/^#[ ]*elif[ ]/b' \
2590 -e '/^#[ ]*undef[ ]/b' \
2591 -e '/^#[ ]*endif/b' \
2593 %s | %"SVf" -C %"SVf" %s",
2600 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2602 scriptname, cpp, sv, CPPMINUS);
2603 PL_doextract = FALSE;
2604 #ifdef IAMSUID /* actually, this is caught earlier */
2605 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2607 (void)seteuid(PL_uid); /* musn't stay setuid root */
2610 (void)setreuid((Uid_t)-1, PL_uid);
2612 #ifdef HAS_SETRESUID
2613 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2615 PerlProc_setuid(PL_uid);
2619 if (PerlProc_geteuid() != PL_uid)
2620 Perl_croak(aTHX_ "Can't do seteuid!\n");
2622 #endif /* IAMSUID */
2623 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2627 else if (!*scriptname) {
2628 forbid_setid("program input from stdin");
2629 PL_rsfp = PerlIO_stdin();
2632 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2633 #if defined(HAS_FCNTL) && defined(F_SETFD)
2635 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2640 #ifndef IAMSUID /* in case script is not readable before setuid */
2642 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2643 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2646 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2647 (int)PERL_REVISION, (int)PERL_VERSION,
2648 (int)PERL_SUBVERSION), PL_origargv);
2649 Perl_croak(aTHX_ "Can't do setuid\n");
2653 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2654 CopFILE(PL_curcop), Strerror(errno));
2659 * I_SYSSTATVFS HAS_FSTATVFS
2661 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2662 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2663 * here so that metaconfig picks them up. */
2667 S_fd_on_nosuid_fs(pTHX_ int fd)
2669 int check_okay = 0; /* able to do all the required sys/libcalls */
2670 int on_nosuid = 0; /* the fd is on a nosuid fs */
2672 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2673 * fstatvfs() is UNIX98.
2674 * fstatfs() is 4.3 BSD.
2675 * ustat()+getmnt() is pre-4.3 BSD.
2676 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2677 * an irrelevant filesystem while trying to reach the right one.
2680 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2682 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2683 defined(HAS_FSTATVFS)
2684 # define FD_ON_NOSUID_CHECK_OKAY
2685 struct statvfs stfs;
2687 check_okay = fstatvfs(fd, &stfs) == 0;
2688 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2689 # endif /* fstatvfs */
2691 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2692 defined(PERL_MOUNT_NOSUID) && \
2693 defined(HAS_FSTATFS) && \
2694 defined(HAS_STRUCT_STATFS) && \
2695 defined(HAS_STRUCT_STATFS_F_FLAGS)
2696 # define FD_ON_NOSUID_CHECK_OKAY
2699 check_okay = fstatfs(fd, &stfs) == 0;
2700 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2701 # endif /* fstatfs */
2703 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2704 defined(PERL_MOUNT_NOSUID) && \
2705 defined(HAS_FSTAT) && \
2706 defined(HAS_USTAT) && \
2707 defined(HAS_GETMNT) && \
2708 defined(HAS_STRUCT_FS_DATA) && \
2710 # define FD_ON_NOSUID_CHECK_OKAY
2713 if (fstat(fd, &fdst) == 0) {
2715 if (ustat(fdst.st_dev, &us) == 0) {
2717 /* NOSTAT_ONE here because we're not examining fields which
2718 * vary between that case and STAT_ONE. */
2719 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2720 size_t cmplen = sizeof(us.f_fname);
2721 if (sizeof(fsd.fd_req.path) < cmplen)
2722 cmplen = sizeof(fsd.fd_req.path);
2723 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2724 fdst.st_dev == fsd.fd_req.dev) {
2726 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2732 # endif /* fstat+ustat+getmnt */
2734 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2735 defined(HAS_GETMNTENT) && \
2736 defined(HAS_HASMNTOPT) && \
2737 defined(MNTOPT_NOSUID)
2738 # define FD_ON_NOSUID_CHECK_OKAY
2739 FILE *mtab = fopen("/etc/mtab", "r");
2740 struct mntent *entry;
2741 struct stat stb, fsb;
2743 if (mtab && (fstat(fd, &stb) == 0)) {
2744 while (entry = getmntent(mtab)) {
2745 if (stat(entry->mnt_dir, &fsb) == 0
2746 && fsb.st_dev == stb.st_dev)
2748 /* found the filesystem */
2750 if (hasmntopt(entry, MNTOPT_NOSUID))
2753 } /* A single fs may well fail its stat(). */
2758 # endif /* getmntent+hasmntopt */
2761 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2764 #endif /* IAMSUID */
2767 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2773 /* do we need to emulate setuid on scripts? */
2775 /* This code is for those BSD systems that have setuid #! scripts disabled
2776 * in the kernel because of a security problem. Merely defining DOSUID
2777 * in perl will not fix that problem, but if you have disabled setuid
2778 * scripts in the kernel, this will attempt to emulate setuid and setgid
2779 * on scripts that have those now-otherwise-useless bits set. The setuid
2780 * root version must be called suidperl or sperlN.NNN. If regular perl
2781 * discovers that it has opened a setuid script, it calls suidperl with
2782 * the same argv that it had. If suidperl finds that the script it has
2783 * just opened is NOT setuid root, it sets the effective uid back to the
2784 * uid. We don't just make perl setuid root because that loses the
2785 * effective uid we had before invoking perl, if it was different from the
2788 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2789 * be defined in suidperl only. suidperl must be setuid root. The
2790 * Configure script will set this up for you if you want it.
2797 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2798 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2799 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2804 #ifndef HAS_SETREUID
2805 /* On this access check to make sure the directories are readable,
2806 * there is actually a small window that the user could use to make
2807 * filename point to an accessible directory. So there is a faint
2808 * chance that someone could execute a setuid script down in a
2809 * non-accessible directory. I don't know what to do about that.
2810 * But I don't think it's too important. The manual lies when
2811 * it says access() is useful in setuid programs.
2813 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2814 Perl_croak(aTHX_ "Permission denied");
2816 /* If we can swap euid and uid, then we can determine access rights
2817 * with a simple stat of the file, and then compare device and
2818 * inode to make sure we did stat() on the same file we opened.
2819 * Then we just have to make sure he or she can execute it.
2822 struct stat tmpstatbuf;
2826 setreuid(PL_euid,PL_uid) < 0
2829 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2832 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2833 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2834 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2835 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2836 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2837 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2838 Perl_croak(aTHX_ "Permission denied");
2840 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2841 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2842 (void)PerlIO_close(PL_rsfp);
2843 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2844 PerlIO_printf(PL_rsfp,
2845 "User %"Uid_t_f" tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2846 (Filename of set-id script was %s, uid %"Uid_t_f" gid %"Gid_t_f".)\n\nSincerely,\nperl\n",
2847 PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2848 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
2850 PL_statbuf.st_uid, PL_statbuf.st_gid);
2851 (void)PerlProc_pclose(PL_rsfp);
2853 Perl_croak(aTHX_ "Permission denied\n");
2857 setreuid(PL_uid,PL_euid) < 0
2859 # if defined(HAS_SETRESUID)
2860 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2863 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2864 Perl_croak(aTHX_ "Can't reswap uid and euid");
2865 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2866 Perl_croak(aTHX_ "Permission denied\n");
2868 #endif /* HAS_SETREUID */
2869 #endif /* IAMSUID */
2871 if (!S_ISREG(PL_statbuf.st_mode))
2872 Perl_croak(aTHX_ "Permission denied");
2873 if (PL_statbuf.st_mode & S_IWOTH)
2874 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2875 PL_doswitches = FALSE; /* -s is insecure in suid */
2876 CopLINE_inc(PL_curcop);
2877 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2878 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2879 Perl_croak(aTHX_ "No #! line");
2880 s = SvPV(PL_linestr,n_a)+2;
2882 while (!isSPACE(*s)) s++;
2883 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2884 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2885 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2886 Perl_croak(aTHX_ "Not a perl script");
2887 while (*s == ' ' || *s == '\t') s++;
2889 * #! arg must be what we saw above. They can invoke it by
2890 * mentioning suidperl explicitly, but they may not add any strange
2891 * arguments beyond what #! says if they do invoke suidperl that way.
2893 len = strlen(validarg);
2894 if (strEQ(validarg," PHOOEY ") ||
2895 strnNE(s,validarg,len) || !isSPACE(s[len]))
2896 Perl_croak(aTHX_ "Args must match #! line");
2899 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2900 PL_euid == PL_statbuf.st_uid)
2902 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2903 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2904 #endif /* IAMSUID */
2906 if (PL_euid) { /* oops, we're not the setuid root perl */
2907 (void)PerlIO_close(PL_rsfp);
2910 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2911 (int)PERL_REVISION, (int)PERL_VERSION,
2912 (int)PERL_SUBVERSION), PL_origargv);
2914 Perl_croak(aTHX_ "Can't do setuid\n");
2917 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2919 (void)setegid(PL_statbuf.st_gid);
2922 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2924 #ifdef HAS_SETRESGID
2925 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2927 PerlProc_setgid(PL_statbuf.st_gid);
2931 if (PerlProc_getegid() != PL_statbuf.st_gid)
2932 Perl_croak(aTHX_ "Can't do setegid!\n");
2934 if (PL_statbuf.st_mode & S_ISUID) {
2935 if (PL_statbuf.st_uid != PL_euid)
2937 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2940 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2942 #ifdef HAS_SETRESUID
2943 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2945 PerlProc_setuid(PL_statbuf.st_uid);
2949 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2950 Perl_croak(aTHX_ "Can't do seteuid!\n");
2952 else if (PL_uid) { /* oops, mustn't run as root */
2954 (void)seteuid((Uid_t)PL_uid);
2957 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2959 #ifdef HAS_SETRESUID
2960 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2962 PerlProc_setuid((Uid_t)PL_uid);
2966 if (PerlProc_geteuid() != PL_uid)
2967 Perl_croak(aTHX_ "Can't do seteuid!\n");
2970 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2971 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
2974 else if (PL_preprocess)
2975 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
2976 else if (fdscript >= 0)
2977 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
2979 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
2981 /* We absolutely must clear out any saved ids here, so we */
2982 /* exec the real perl, substituting fd script for scriptname. */
2983 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2984 PerlIO_rewind(PL_rsfp);
2985 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2986 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2987 if (!PL_origargv[which])
2988 Perl_croak(aTHX_ "Permission denied");
2989 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
2990 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
2991 #if defined(HAS_FCNTL) && defined(F_SETFD)
2992 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
2994 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
2995 (int)PERL_REVISION, (int)PERL_VERSION,
2996 (int)PERL_SUBVERSION), PL_origargv);/* try again */
2997 Perl_croak(aTHX_ "Can't do setuid\n");
2998 #endif /* IAMSUID */
3000 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3001 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3003 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3004 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3006 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3009 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3010 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3011 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3012 /* not set-id, must be wrapped */
3018 S_find_beginning(pTHX)
3020 register char *s, *s2;
3022 /* skip forward in input to the real script? */
3025 #ifdef MACOS_TRADITIONAL
3026 /* Since the Mac OS does not honor !# arguments for us, we do it ourselves */
3028 while (PL_doextract || gMacPerl_AlwaysExtract) {
3029 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3030 if (!gMacPerl_AlwaysExtract)
3031 Perl_croak(aTHX_ "No Perl script found in input\n");
3033 if (PL_doextract) /* require explicit override ? */
3034 if (!OverrideExtract(PL_origfilename))
3035 Perl_croak(aTHX_ "User aborted script\n");
3037 PL_doextract = FALSE;
3039 /* Pater peccavi, file does not have #! */
3040 PerlIO_rewind(PL_rsfp);
3045 while (PL_doextract) {
3046 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3047 Perl_croak(aTHX_ "No Perl script found in input\n");
3049 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3050 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3051 PL_doextract = FALSE;
3052 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3054 while (*s == ' ' || *s == '\t') s++;
3056 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3057 if (strnEQ(s2-4,"perl",4))
3059 while ((s = moreswitches(s)))
3070 PL_uid = PerlProc_getuid();
3071 PL_euid = PerlProc_geteuid();
3072 PL_gid = PerlProc_getgid();
3073 PL_egid = PerlProc_getegid();
3075 PL_uid |= PL_gid << 16;
3076 PL_euid |= PL_egid << 16;
3078 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3082 S_forbid_setid(pTHX_ char *s)
3084 if (PL_euid != PL_uid)
3085 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3086 if (PL_egid != PL_gid)
3087 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3091 Perl_init_debugger(pTHX)
3094 HV *ostash = PL_curstash;
3096 PL_curstash = PL_debstash;
3097 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3098 AvREAL_off(PL_dbargs);
3099 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3100 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3101 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3102 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3103 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3104 sv_setiv(PL_DBsingle, 0);
3105 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3106 sv_setiv(PL_DBtrace, 0);
3107 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3108 sv_setiv(PL_DBsignal, 0);
3109 PL_curstash = ostash;
3112 #ifndef STRESS_REALLOC
3113 #define REASONABLE(size) (size)
3115 #define REASONABLE(size) (1) /* unreasonable */
3119 Perl_init_stacks(pTHX)
3121 /* start with 128-item stack and 8K cxstack */
3122 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3123 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3124 PL_curstackinfo->si_type = PERLSI_MAIN;
3125 PL_curstack = PL_curstackinfo->si_stack;
3126 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3128 PL_stack_base = AvARRAY(PL_curstack);
3129 PL_stack_sp = PL_stack_base;
3130 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3132 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3135 PL_tmps_max = REASONABLE(128);
3137 New(54,PL_markstack,REASONABLE(32),I32);
3138 PL_markstack_ptr = PL_markstack;
3139 PL_markstack_max = PL_markstack + REASONABLE(32);
3143 New(54,PL_scopestack,REASONABLE(32),I32);
3144 PL_scopestack_ix = 0;
3145 PL_scopestack_max = REASONABLE(32);
3147 New(54,PL_savestack,REASONABLE(128),ANY);
3148 PL_savestack_ix = 0;
3149 PL_savestack_max = REASONABLE(128);
3151 New(54,PL_retstack,REASONABLE(16),OP*);
3153 PL_retstack_max = REASONABLE(16);
3162 while (PL_curstackinfo->si_next)
3163 PL_curstackinfo = PL_curstackinfo->si_next;
3164 while (PL_curstackinfo) {
3165 PERL_SI *p = PL_curstackinfo->si_prev;
3166 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3167 Safefree(PL_curstackinfo->si_cxstack);
3168 Safefree(PL_curstackinfo);
3169 PL_curstackinfo = p;
3171 Safefree(PL_tmps_stack);
3172 Safefree(PL_markstack);
3173 Safefree(PL_scopestack);
3174 Safefree(PL_savestack);
3175 Safefree(PL_retstack);
3179 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3190 lex_start(PL_linestr);
3192 PL_subname = newSVpvn("main",4);
3196 S_init_predump_symbols(pTHX)
3202 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3203 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3204 GvMULTI_on(PL_stdingv);
3205 io = GvIOp(PL_stdingv);
3206 IoIFP(io) = PerlIO_stdin();
3207 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3209 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3211 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3214 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3216 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3218 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3220 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3221 GvMULTI_on(PL_stderrgv);
3222 io = GvIOp(PL_stderrgv);
3223 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3224 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3226 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3228 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3231 Safefree(PL_osname);
3232 PL_osname = savepv(OSNAME);
3236 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3243 argc--,argv++; /* skip name of script */
3244 if (PL_doswitches) {
3245 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3248 if (argv[0][1] == '-' && !argv[0][2]) {
3252 if ((s = strchr(argv[0], '='))) {
3254 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3257 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3260 PL_toptarget = NEWSV(0,0);
3261 sv_upgrade(PL_toptarget, SVt_PVFM);
3262 sv_setpvn(PL_toptarget, "", 0);
3263 PL_bodytarget = NEWSV(0,0);
3264 sv_upgrade(PL_bodytarget, SVt_PVFM);
3265 sv_setpvn(PL_bodytarget, "", 0);
3266 PL_formtarget = PL_bodytarget;
3269 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3270 #ifdef MACOS_TRADITIONAL
3271 /* $0 is not majick on a Mac */
3272 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3274 sv_setpv(GvSV(tmpgv),PL_origfilename);
3275 magicname("0", "0", 1);
3278 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3280 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3282 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3284 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3285 GvMULTI_on(PL_argvgv);
3286 (void)gv_AVadd(PL_argvgv);
3287 av_clear(GvAVn(PL_argvgv));
3288 for (; argc > 0; argc--,argv++) {
3289 SV *sv = newSVpv(argv[0],0);
3290 av_push(GvAVn(PL_argvgv),sv);
3291 if (PL_widesyscalls)
3292 (void)sv_utf8_decode(sv);
3295 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3297 GvMULTI_on(PL_envgv);
3298 hv = GvHVn(PL_envgv);
3299 hv_magic(hv, PL_envgv, 'E');
3300 #if !defined( VMS) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) /* VMS doesn't have environ array */
3301 /* Note that if the supplied env parameter is actually a copy
3302 of the global environ then it may now point to free'd memory
3303 if the environment has been modified since. To avoid this
3304 problem we treat env==NULL as meaning 'use the default'
3309 environ[0] = Nullch;
3310 for (; *env; env++) {
3311 if (!(s = strchr(*env,'=')))
3317 sv = newSVpv(s--,0);
3318 (void)hv_store(hv, *env, s - *env, sv, 0);
3320 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3321 /* Sins of the RTL. See note in my_setenv(). */
3322 (void)PerlEnv_putenv(savepv(*env));
3326 #ifdef DYNAMIC_ENV_FETCH
3327 HvNAME(hv) = savepv(ENV_HV_NAME);
3331 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3332 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3336 S_init_perllib(pTHX)
3341 s = PerlEnv_getenv("PERL5LIB");
3343 incpush(s, TRUE, TRUE);
3345 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3347 /* Treat PERL5?LIB as a possible search list logical name -- the
3348 * "natural" VMS idiom for a Unix path string. We allow each
3349 * element to be a set of |-separated directories for compatibility.
3353 if (my_trnlnm("PERL5LIB",buf,0))
3354 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3356 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3360 /* Use the ~-expanded versions of APPLLIB (undocumented),
3361 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3364 incpush(APPLLIB_EXP, TRUE, TRUE);
3368 incpush(ARCHLIB_EXP, FALSE, FALSE);
3370 #ifdef MACOS_TRADITIONAL
3372 struct stat tmpstatbuf;
3373 SV * privdir = NEWSV(55, 0);
3374 char * macperl = PerlEnv_getenv("MACPERL");
3379 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3380 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3381 incpush(SvPVX(privdir), TRUE, FALSE);
3382 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3383 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3384 incpush(SvPVX(privdir), TRUE, FALSE);
3386 SvREFCNT_dec(privdir);
3389 incpush(":", FALSE, FALSE);
3392 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3395 incpush(PRIVLIB_EXP, TRUE, FALSE);
3397 incpush(PRIVLIB_EXP, FALSE, FALSE);
3401 /* sitearch is always relative to sitelib on Windows for
3402 * DLL-based path intuition to work correctly */
3403 # if !defined(WIN32)
3404 incpush(SITEARCH_EXP, FALSE, FALSE);
3410 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3412 incpush(SITELIB_EXP, FALSE, FALSE);
3416 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3417 incpush(SITELIB_STEM, FALSE, TRUE);
3420 #ifdef PERL_VENDORARCH_EXP
3421 /* vendorarch is always relative to vendorlib on Windows for
3422 * DLL-based path intuition to work correctly */
3423 # if !defined(WIN32)
3424 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3428 #ifdef PERL_VENDORLIB_EXP
3430 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3432 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3436 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3437 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3440 #ifdef PERL_OTHERLIBDIRS
3441 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3445 incpush(".", FALSE, FALSE);
3446 #endif /* MACOS_TRADITIONAL */
3450 # define PERLLIB_SEP ';'
3453 # define PERLLIB_SEP '|'
3455 # if defined(MACOS_TRADITIONAL)
3456 # define PERLLIB_SEP ','
3458 # define PERLLIB_SEP ':'
3462 #ifndef PERLLIB_MANGLE
3463 # define PERLLIB_MANGLE(s,n) (s)
3467 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3469 SV *subdir = Nullsv;
3474 if (addsubdirs || addoldvers) {
3475 subdir = sv_newmortal();
3478 /* Break at all separators */
3480 SV *libdir = NEWSV(55,0);
3483 /* skip any consecutive separators */
3484 while ( *p == PERLLIB_SEP ) {
3485 /* Uncomment the next line for PATH semantics */
3486 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3490 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3491 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3496 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3497 p = Nullch; /* break out */
3499 #ifdef MACOS_TRADITIONAL
3500 if (!strchr(SvPVX(libdir), ':'))
3501 sv_insert(libdir, 0, 0, ":", 1);
3502 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3503 sv_catpv(libdir, ":");
3507 * BEFORE pushing libdir onto @INC we may first push version- and
3508 * archname-specific sub-directories.
3510 if (addsubdirs || addoldvers) {
3511 #ifdef PERL_INC_VERSION_LIST
3512 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3513 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3514 const char **incver;
3516 struct stat tmpstatbuf;
3521 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3523 while (unix[len-1] == '/') len--; /* Cosmetic */
3524 sv_usepvn(libdir,unix,len);
3527 PerlIO_printf(Perl_error_log,
3528 "Failed to unixify @INC element \"%s\"\n",
3532 #ifdef MACOS_TRADITIONAL
3533 #define PERL_AV_SUFFIX_FMT ""
3534 #define PERL_ARCH_FMT ":%s"
3536 #define PERL_AV_SUFFIX_FMT "/"
3537 #define PERL_ARCH_FMT "/%s"
3539 /* .../version/archname if -d .../version/archname */
3540 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT PERL_ARCH_FMT,
3542 (int)PERL_REVISION, (int)PERL_VERSION,
3543 (int)PERL_SUBVERSION, ARCHNAME);
3544 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3545 S_ISDIR(tmpstatbuf.st_mode))
3546 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3548 /* .../version if -d .../version */
3549 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT, libdir,
3550 (int)PERL_REVISION, (int)PERL_VERSION,
3551 (int)PERL_SUBVERSION);
3552 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3553 S_ISDIR(tmpstatbuf.st_mode))
3554 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3556 /* .../archname if -d .../archname */
3557 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3558 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3559 S_ISDIR(tmpstatbuf.st_mode))
3560 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3563 #ifdef PERL_INC_VERSION_LIST
3565 for (incver = incverlist; *incver; incver++) {
3566 /* .../xxx if -d .../xxx */
3567 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3568 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3569 S_ISDIR(tmpstatbuf.st_mode))
3570 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3576 /* finally push this lib directory on the end of @INC */
3577 av_push(GvAVn(PL_incgv), libdir);
3582 STATIC struct perl_thread *
3583 S_init_main_thread(pTHX)
3585 #if !defined(PERL_IMPLICIT_CONTEXT)
3586 struct perl_thread *thr;
3590 Newz(53, thr, 1, struct perl_thread);
3591 PL_curcop = &PL_compiling;
3592 thr->interp = PERL_GET_INTERP;
3593 thr->cvcache = newHV();
3594 thr->threadsv = newAV();
3595 /* thr->threadsvp is set when find_threadsv is called */
3596 thr->specific = newAV();
3597 thr->flags = THRf_R_JOINABLE;
3598 MUTEX_INIT(&thr->mutex);
3599 /* Handcraft thrsv similarly to mess_sv */
3600 New(53, PL_thrsv, 1, SV);
3601 Newz(53, xpv, 1, XPV);
3602 SvFLAGS(PL_thrsv) = SVt_PV;
3603 SvANY(PL_thrsv) = (void*)xpv;
3604 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3605 SvPVX(PL_thrsv) = (char*)thr;
3606 SvCUR_set(PL_thrsv, sizeof(thr));
3607 SvLEN_set(PL_thrsv, sizeof(thr));
3608 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3609 thr->oursv = PL_thrsv;
3610 PL_chopset = " \n-";
3613 MUTEX_LOCK(&PL_threads_mutex);
3618 MUTEX_UNLOCK(&PL_threads_mutex);
3620 #ifdef HAVE_THREAD_INTERN
3621 Perl_init_thread_intern(thr);
3624 #ifdef SET_THREAD_SELF
3625 SET_THREAD_SELF(thr);
3627 thr->self = pthread_self();
3628 #endif /* SET_THREAD_SELF */
3632 * These must come after the SET_THR because sv_setpvn does
3633 * SvTAINT and the taint fields require dTHR.
3635 PL_toptarget = NEWSV(0,0);
3636 sv_upgrade(PL_toptarget, SVt_PVFM);
3637 sv_setpvn(PL_toptarget, "", 0);
3638 PL_bodytarget = NEWSV(0,0);
3639 sv_upgrade(PL_bodytarget, SVt_PVFM);
3640 sv_setpvn(PL_bodytarget, "", 0);
3641 PL_formtarget = PL_bodytarget;
3642 thr->errsv = newSVpvn("", 0);
3643 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3646 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3647 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3648 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3649 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3650 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3652 PL_reginterp_cnt = 0;
3656 #endif /* USE_THREADS */
3659 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3663 line_t oldline = CopLINE(PL_curcop);
3669 while (AvFILL(paramList) >= 0) {
3670 cv = (CV*)av_shift(paramList);
3672 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3673 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3679 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3683 (void)SvPV(atsv, len);
3686 PL_curcop = &PL_compiling;
3687 CopLINE_set(PL_curcop, oldline);
3688 if (paramList == PL_beginav)
3689 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3691 Perl_sv_catpvf(aTHX_ atsv,
3692 "%s failed--call queue aborted",
3693 paramList == PL_checkav ? "CHECK"
3694 : paramList == PL_initav ? "INIT"
3696 while (PL_scopestack_ix > oldscope)
3699 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3706 /* my_exit() was called */
3707 while (PL_scopestack_ix > oldscope)
3710 PL_curstash = PL_defstash;
3711 PL_curcop = &PL_compiling;
3712 CopLINE_set(PL_curcop, oldline);
3714 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3715 if (paramList == PL_beginav)
3716 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3718 Perl_croak(aTHX_ "%s failed--call queue aborted",
3719 paramList == PL_checkav ? "CHECK"
3720 : paramList == PL_initav ? "INIT"
3727 PL_curcop = &PL_compiling;
3728 CopLINE_set(PL_curcop, oldline);
3731 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3739 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3741 S_vcall_list_body(pTHX_ va_list args)
3743 CV *cv = va_arg(args, CV*);
3744 return call_list_body(cv);
3749 S_call_list_body(pTHX_ CV *cv)
3751 PUSHMARK(PL_stack_sp);
3752 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3757 Perl_my_exit(pTHX_ U32 status)
3761 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3762 thr, (unsigned long) status));
3771 STATUS_NATIVE_SET(status);
3778 Perl_my_failure_exit(pTHX)
3781 if (vaxc$errno & 1) {
3782 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3783 STATUS_NATIVE_SET(44);
3786 if (!vaxc$errno && errno) /* unlikely */
3787 STATUS_NATIVE_SET(44);
3789 STATUS_NATIVE_SET(vaxc$errno);
3794 STATUS_POSIX_SET(errno);
3796 exitstatus = STATUS_POSIX >> 8;
3797 if (exitstatus & 255)
3798 STATUS_POSIX_SET(exitstatus);
3800 STATUS_POSIX_SET(255);
3807 S_my_exit_jump(pTHX)
3810 register PERL_CONTEXT *cx;
3815 SvREFCNT_dec(PL_e_script);
3816 PL_e_script = Nullsv;
3819 POPSTACK_TO(PL_mainstack);
3820 if (cxstack_ix >= 0) {
3823 POPBLOCK(cx,PL_curpm);
3835 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3838 p = SvPVX(PL_e_script);
3839 nl = strchr(p, '\n');
3840 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3842 filter_del(read_e_script);
3845 sv_catpvn(buf_sv, p, nl-p);
3846 sv_chop(PL_e_script, nl);