3 * Copyright (c) 1991-2001, 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 * "Sam sat on the ground and put his head in his hands. 'I wish I had never
12 * come here, and I don't want to see no more magic,' he said, and fell silent."
19 #if defined(HAS_GETGROUPS) || defined(HAS_SETGROUPS)
28 /* if you only have signal() and it resets on each signal, FAKE_PERSISTENT_SIGNAL_HANDLERS fixes */
29 #if !defined(HAS_SIGACTION) && defined(VMS)
30 # define FAKE_PERSISTENT_SIGNAL_HANDLERS
33 static void restore_magic(pTHX_ void *p);
34 static void unwind_handler_stack(pTHX_ void *p);
37 * Use the "DESTRUCTOR" scope cleanup to reinstate magic.
45 /* MGS is typedef'ed to struct magic_state in perl.h */
48 S_save_magic(pTHX_ I32 mgs_ix, SV *sv)
51 assert(SvMAGICAL(sv));
53 SAVEDESTRUCTOR_X(restore_magic, INT2PTR(void*, (IV)mgs_ix));
55 mgs = SSPTR(mgs_ix, MGS*);
57 mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv);
58 mgs->mgs_ss_ix = PL_savestack_ix; /* points after the saved destructor */
62 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_NOK|SVp_POK)) >> PRIVSHIFT;
66 =for apidoc mg_magical
68 Turns on the magical status of an SV. See C<sv_magic>.
74 Perl_mg_magical(pTHX_ SV *sv)
77 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
78 MGVTBL* vtbl = mg->mg_virtual;
80 if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP))
84 if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || vtbl->svt_clear)
93 Do magic after a value is retrieved from the SV. See C<sv_magic>.
99 Perl_mg_get(pTHX_ SV *sv)
102 MAGIC *newmg, *head, *cur, *mg;
103 I32 mgs_ix = SSNEW(sizeof(MGS));
105 save_magic(mgs_ix, sv);
107 /* We must call svt_get(sv, mg) for each valid entry in the linked
108 list of magic. svt_get() may delete the current entry, add new
109 magic to the head of the list, or upgrade the SV. AMS 20010810 */
111 newmg = cur = head = mg = SvMAGIC(sv);
113 MGVTBL *vtbl = mg->mg_virtual;
115 if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) {
116 CALL_FPTR(vtbl->svt_get)(aTHX_ sv, mg);
117 /* Don't restore the flags for this entry if it was deleted. */
118 if (mg->mg_flags & MGf_GSKIP)
119 (SSPTR(mgs_ix, MGS *))->mgs_flags = 0;
122 mg = mg->mg_moremagic;
125 /* Have we finished with the new entries we saw? Start again
126 where we left off (unless there are more new entries). */
134 /* Were any new entries added? */
135 if (!new && (newmg = SvMAGIC(sv)) != head) {
142 restore_magic(aTHX_ INT2PTR(void *, (IV)mgs_ix));
149 Do magic after a value is assigned to the SV. See C<sv_magic>.
155 Perl_mg_set(pTHX_ SV *sv)
161 mgs_ix = SSNEW(sizeof(MGS));
162 save_magic(mgs_ix, sv);
164 for (mg = SvMAGIC(sv); mg; mg = nextmg) {
165 MGVTBL* vtbl = mg->mg_virtual;
166 nextmg = mg->mg_moremagic; /* it may delete itself */
167 if (mg->mg_flags & MGf_GSKIP) {
168 mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */
169 (SSPTR(mgs_ix, MGS*))->mgs_flags = 0;
171 if (vtbl && vtbl->svt_set)
172 CALL_FPTR(vtbl->svt_set)(aTHX_ sv, mg);
175 restore_magic(aTHX_ INT2PTR(void*, (IV)mgs_ix));
180 =for apidoc mg_length
182 Report on the SV's length. See C<sv_magic>.
188 Perl_mg_length(pTHX_ SV *sv)
193 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
194 MGVTBL* vtbl = mg->mg_virtual;
195 if (vtbl && vtbl->svt_len) {
198 mgs_ix = SSNEW(sizeof(MGS));
199 save_magic(mgs_ix, sv);
200 /* omit MGf_GSKIP -- not changed here */
201 len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg);
202 restore_magic(aTHX_ INT2PTR(void*, (IV)mgs_ix));
209 U8 *s = (U8*)SvPV(sv, len);
210 len = Perl_utf8_length(aTHX_ s, s + len);
218 Perl_mg_size(pTHX_ SV *sv)
223 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
224 MGVTBL* vtbl = mg->mg_virtual;
225 if (vtbl && vtbl->svt_len) {
228 mgs_ix = SSNEW(sizeof(MGS));
229 save_magic(mgs_ix, sv);
230 /* omit MGf_GSKIP -- not changed here */
231 len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg);
232 restore_magic(aTHX_ INT2PTR(void*, (IV)mgs_ix));
239 len = AvFILLp((AV *) sv); /* Fallback to non-tied array */
244 Perl_croak(aTHX_ "Size magic not implemented");
253 Clear something magical that the SV represents. See C<sv_magic>.
259 Perl_mg_clear(pTHX_ SV *sv)
264 mgs_ix = SSNEW(sizeof(MGS));
265 save_magic(mgs_ix, sv);
267 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
268 MGVTBL* vtbl = mg->mg_virtual;
269 /* omit GSKIP -- never set here */
271 if (vtbl && vtbl->svt_clear)
272 CALL_FPTR(vtbl->svt_clear)(aTHX_ sv, mg);
275 restore_magic(aTHX_ INT2PTR(void*, (IV)mgs_ix));
282 Finds the magic pointer for type matching the SV. See C<sv_magic>.
288 Perl_mg_find(pTHX_ SV *sv, int type)
293 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
294 if (mg->mg_type == type)
303 Copies the magic from one SV to another. See C<sv_magic>.
309 Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen)
313 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
314 if (isUPPER(mg->mg_type)) {
316 mg->mg_type == PERL_MAGIC_tied ? SvTIED_obj(sv, mg) :
317 (mg->mg_type == PERL_MAGIC_regdata && mg->mg_obj)
319 toLOWER(mg->mg_type), key, klen);
329 Free any magic storage used by the SV. See C<sv_magic>.
335 Perl_mg_free(pTHX_ SV *sv)
339 for (mg = SvMAGIC(sv); mg; mg = moremagic) {
340 MGVTBL* vtbl = mg->mg_virtual;
341 moremagic = mg->mg_moremagic;
342 if (vtbl && vtbl->svt_free)
343 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
344 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) {
346 Safefree(mg->mg_ptr);
347 else if (mg->mg_len == HEf_SVKEY)
348 SvREFCNT_dec((SV*)mg->mg_ptr);
350 if (mg->mg_flags & MGf_REFCOUNTED)
351 SvREFCNT_dec(mg->mg_obj);
359 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
364 Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg)
368 if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
369 if (mg->mg_obj) /* @+ */
372 return rx->lastparen;
379 Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg)
387 if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
391 if (paren <= rx->nparens &&
392 (s = rx->startp[paren]) != -1 &&
393 (t = rx->endp[paren]) != -1)
395 if (mg->mg_obj) /* @+ */
400 if (i > 0 && PL_reg_match_utf8) {
401 char *b = rx->subbeg;
403 i = Perl_utf8_length(aTHX_ (U8*)b, (U8*)(b+i));
413 Perl_magic_regdatum_set(pTHX_ SV *sv, MAGIC *mg)
415 Perl_croak(aTHX_ PL_no_modify);
421 Perl_magic_len(pTHX_ SV *sv, MAGIC *mg)
428 switch (*mg->mg_ptr) {
429 case '1': case '2': case '3': case '4':
430 case '5': case '6': case '7': case '8': case '9': case '&':
431 if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
433 paren = atoi(mg->mg_ptr); /* $& is in [0] */
435 if (paren <= rx->nparens &&
436 (s1 = rx->startp[paren]) != -1 &&
437 (t1 = rx->endp[paren]) != -1)
441 if (i > 0 && PL_reg_match_utf8) {
442 char *s = rx->subbeg + s1;
443 char *send = rx->subbeg + t1;
446 if (is_utf8_string((U8*)s, i))
447 i = Perl_utf8_length(aTHX_ (U8*)s, (U8*)send);
450 Perl_croak(aTHX_ "panic: magic_len: %"IVdf, (IV)i);
456 if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
457 paren = rx->lastparen;
462 case '\016': /* ^N */
463 if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
464 paren = rx->lastcloseparen;
470 if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
471 if (rx->startp[0] != -1) {
482 if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
483 if (rx->endp[0] != -1) {
484 i = rx->sublen - rx->endp[0];
495 if (!SvPOK(sv) && SvNIOK(sv)) {
505 Perl_magic_get(pTHX_ SV *sv, MAGIC *mg)
512 switch (*mg->mg_ptr) {
513 case '\001': /* ^A */
514 sv_setsv(sv, PL_bodytarget);
516 case '\003': /* ^C */
517 sv_setiv(sv, (IV)PL_minus_c);
520 case '\004': /* ^D */
521 sv_setiv(sv, (IV)(PL_debug & DEBUG_MASK));
522 #if defined(YYDEBUG) && defined(DEBUGGING)
523 PL_yydebug = DEBUG_p_TEST;
526 case '\005': /* ^E */
527 if (*(mg->mg_ptr+1) == '\0') {
528 #ifdef MACOS_TRADITIONAL
532 sv_setnv(sv,(double)gMacPerl_OSErr);
533 sv_setpv(sv, gMacPerl_OSErr ? GetSysErrText(gMacPerl_OSErr, msg) : "");
538 # include <descrip.h>
539 # include <starlet.h>
541 $DESCRIPTOR(msgdsc,msg);
542 sv_setnv(sv,(NV) vaxc$errno);
543 if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1)
544 sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length);
550 if (!(_emx_env & 0x200)) { /* Under DOS */
551 sv_setnv(sv, (NV)errno);
552 sv_setpv(sv, errno ? Strerror(errno) : "");
554 if (errno != errno_isOS2) {
555 int tmp = _syserrno();
556 if (tmp) /* 2nd call to _syserrno() makes it 0 */
559 sv_setnv(sv, (NV)Perl_rc);
560 sv_setpv(sv, os2error(Perl_rc));
565 DWORD dwErr = GetLastError();
566 sv_setnv(sv, (NV)dwErr);
569 PerlProc_GetOSError(sv, dwErr);
576 sv_setnv(sv, (NV)errno);
577 sv_setpv(sv, errno ? Strerror(errno) : "");
582 SvNOK_on(sv); /* what a wonderful hack! */
584 else if (strEQ(mg->mg_ptr+1, "NCODING"))
585 sv_setsv(sv, PL_encoding);
587 case '\006': /* ^F */
588 sv_setiv(sv, (IV)PL_maxsysfd);
590 case '\010': /* ^H */
591 sv_setiv(sv, (IV)PL_hints);
593 case '\011': /* ^I */ /* NOT \t in EBCDIC */
595 sv_setpv(sv, PL_inplace);
597 sv_setsv(sv, &PL_sv_undef);
599 case '\017': /* ^O & ^OPEN */
600 if (*(mg->mg_ptr+1) == '\0')
601 sv_setpv(sv, PL_osname);
602 else if (strEQ(mg->mg_ptr, "\017PEN")) {
603 if (!PL_compiling.cop_io)
604 sv_setsv(sv, &PL_sv_undef);
606 sv_setsv(sv, PL_compiling.cop_io);
610 case '\020': /* ^P */
611 sv_setiv(sv, (IV)PL_perldb);
613 case '\023': /* ^S */
615 if (PL_lex_state != LEX_NOTPARSING)
618 sv_setiv(sv, PL_in_eval & ~(EVAL_INREQUIRE));
623 case '\024': /* ^T */
624 if (*(mg->mg_ptr+1) == '\0') {
626 sv_setnv(sv, PL_basetime);
628 sv_setiv(sv, (IV)PL_basetime);
631 else if (strEQ(mg->mg_ptr, "\024AINT"))
632 sv_setiv(sv, PL_tainting);
634 case '\027': /* ^W & $^WARNING_BITS & ^WIDE_SYSTEM_CALLS */
635 if (*(mg->mg_ptr+1) == '\0')
636 sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE));
637 else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) {
638 if (PL_compiling.cop_warnings == pWARN_NONE ||
639 PL_compiling.cop_warnings == pWARN_STD)
641 sv_setpvn(sv, WARN_NONEstring, WARNsize) ;
643 else if (PL_compiling.cop_warnings == pWARN_ALL) {
644 sv_setpvn(sv, WARN_ALLstring, WARNsize) ;
647 sv_setsv(sv, PL_compiling.cop_warnings);
651 else if (strEQ(mg->mg_ptr+1, "IDE_SYSTEM_CALLS"))
652 sv_setiv(sv, (IV)PL_widesyscalls);
654 case '1': case '2': case '3': case '4':
655 case '5': case '6': case '7': case '8': case '9': case '&':
656 if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
660 * Pre-threads, this was paren = atoi(GvENAME((GV*)mg->mg_obj));
661 * XXX Does the new way break anything?
663 paren = atoi(mg->mg_ptr); /* $& is in [0] */
665 if (paren <= rx->nparens &&
666 (s1 = rx->startp[paren]) != -1 &&
667 (t1 = rx->endp[paren]) != -1)
676 bool was_tainted = FALSE;
678 was_tainted = PL_tainted;
682 if (PL_reg_match_utf8 && is_utf8_string((U8*)s, i))
687 PL_tainted = (was_tainted || RX_MATCH_TAINTED(rx));
692 sv_setsv(sv,&PL_sv_undef);
695 if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
696 paren = rx->lastparen;
700 sv_setsv(sv,&PL_sv_undef);
702 case '\016': /* ^N */
703 if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
704 paren = rx->lastcloseparen;
708 sv_setsv(sv,&PL_sv_undef);
711 if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
712 if ((s = rx->subbeg) && rx->startp[0] != -1) {
717 sv_setsv(sv,&PL_sv_undef);
720 if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
721 if (rx->subbeg && rx->endp[0] != -1) {
722 s = rx->subbeg + rx->endp[0];
723 i = rx->sublen - rx->endp[0];
727 sv_setsv(sv,&PL_sv_undef);
731 if (GvIO(PL_last_in_gv)) {
732 sv_setiv(sv, (IV)IoLINES(GvIOp(PL_last_in_gv)));
738 sv_setiv(sv, (IV)STATUS_CURRENT);
739 #ifdef COMPLEX_STATUS
740 LvTARGOFF(sv) = PL_statusvalue;
741 LvTARGLEN(sv) = PL_statusvalue_vms;
746 s = IoTOP_NAME(GvIOp(PL_defoutgv));
750 sv_setpv(sv,GvENAME(PL_defoutgv));
755 s = IoFMT_NAME(GvIOp(PL_defoutgv));
757 s = GvENAME(PL_defoutgv);
762 sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv)));
765 sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv)));
768 sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv)));
776 WITH_THR(sv_setiv(sv, (IV)PL_curcop->cop_arybase));
779 sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 );
785 sv_setpv(sv,SvPVX(PL_ors_sv));
788 sv_setpv(sv,PL_ofmt);
792 sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno));
793 sv_setpv(sv, errno ? Strerror(errno) : "");
796 int saveerrno = errno;
797 sv_setnv(sv, (NV)errno);
799 if (errno == errno_isOS2 || errno == errno_isOS2_set)
800 sv_setpv(sv, os2error(Perl_rc));
803 sv_setpv(sv, errno ? Strerror(errno) : "");
807 SvNOK_on(sv); /* what a wonderful hack! */
810 sv_setiv(sv, (IV)PL_uid);
813 sv_setiv(sv, (IV)PL_euid);
816 sv_setiv(sv, (IV)PL_gid);
818 Perl_sv_setpvf(aTHX_ sv, "%"Gid_t_f, PL_gid);
822 sv_setiv(sv, (IV)PL_egid);
824 Perl_sv_setpvf(aTHX_ sv, "%"Gid_t_f, PL_egid);
829 Groups_t gary[NGROUPS];
830 i = getgroups(NGROUPS,gary);
832 Perl_sv_catpvf(aTHX_ sv, " %"Gid_t_f, gary[i]);
835 (void)SvIOK_on(sv); /* what a wonderful hack! */
839 #ifndef MACOS_TRADITIONAL
843 #ifdef USE_5005THREADS
845 sv_setsv(sv, thr->errsv);
847 #endif /* USE_5005THREADS */
853 Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg)
855 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
857 if (uf && uf->uf_val)
858 (*uf->uf_val)(aTHX_ uf->uf_index, sv);
863 Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg)
874 #ifdef DYNAMIC_ENV_FETCH
875 /* We just undefd an environment var. Is a replacement */
876 /* waiting in the wings? */
879 if ((valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE)))
880 s = SvPV(*valp, len);
884 #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS)
885 /* And you'll never guess what the dog had */
886 /* in its mouth... */
888 MgTAINTEDDIR_off(mg);
890 if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) {
891 char pathbuf[256], eltbuf[256], *cp, *elt = s;
895 do { /* DCL$PATH may be a search list */
896 while (1) { /* as may dev portion of any element */
897 if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) {
898 if ( *(cp+1) == '.' || *(cp+1) == '-' ||
899 cando_by_name(S_IWUSR,0,elt) ) {
904 if ((cp = strchr(elt, ':')) != Nullch)
906 if (my_trnlnm(elt, eltbuf, j++))
912 } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf));
915 if (s && klen == 4 && strEQ(ptr,"PATH")) {
916 char *strend = s + len;
921 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf,
924 if (i >= sizeof tmpbuf /* too long -- assume the worst */
926 || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) {
933 #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */
939 Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg)
942 my_setenv(MgPV(mg,n_a),Nullch);
947 Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg)
950 Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system");
955 magic_clear_all_env(sv,mg);
956 hv_iterinit((HV*)sv);
957 while ((entry = hv_iternext((HV*)sv))) {
959 my_setenv(hv_iterkey(entry, &keylen),
960 SvPV(hv_iterval((HV*)sv, entry), n_a));
968 Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg)
970 #if defined(VMS) || defined(EPOC)
971 Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system");
973 # if defined(PERL_IMPLICIT_SYS) || defined(WIN32)
976 # ifdef USE_ENVIRON_ARRAY
977 # ifndef PERL_USE_SAFE_PUTENV
980 if (environ == PL_origenviron)
981 environ = (char**)safesysmalloc(sizeof(char*));
983 for (i = 0; environ[i]; i++)
984 safesysfree(environ[i]);
985 # endif /* PERL_USE_SAFE_PUTENV */
989 # endif /* USE_ENVIRON_ARRAY */
990 # endif /* PERL_IMPLICIT_SYS || WIN32 */
991 #endif /* VMS || EPC */
995 #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS
996 static int sig_ignoring_initted = 0;
997 static int sig_ignoring[SIG_SIZE]; /* which signals we are ignoring */
1002 Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg)
1006 /* Are we fetching a signal entry? */
1007 i = whichsig(MgPV(mg,n_a));
1010 sv_setsv(sv,PL_psig_ptr[i]);
1012 Sighandler_t sigstate;
1013 #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS
1014 if (sig_ignoring_initted && sig_ignoring[i])
1018 sigstate = rsignal_state(i);
1020 /* cache state so we don't fetch it again */
1021 if(sigstate == SIG_IGN)
1022 sv_setpv(sv,"IGNORE");
1024 sv_setsv(sv,&PL_sv_undef);
1025 PL_psig_ptr[i] = SvREFCNT_inc(sv);
1032 Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg)
1036 /* Are we clearing a signal entry? */
1037 i = whichsig(MgPV(mg,n_a));
1039 if(PL_psig_ptr[i]) {
1040 SvREFCNT_dec(PL_psig_ptr[i]);
1043 if(PL_psig_name[i]) {
1044 SvREFCNT_dec(PL_psig_name[i]);
1052 Perl_raise_signal(pTHX_ int sig)
1054 /* Set a flag to say this signal is pending */
1055 PL_psig_pend[sig]++;
1056 /* And one to say _a_ signal is pending */
1061 Perl_csighandler(int sig)
1063 #ifndef PERL_OLD_SIGNALS
1066 #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS
1067 (void) rsignal(sig, &Perl_csighandler);
1068 if (sig_ignoring[sig]) return;
1070 #ifdef PERL_OLD_SIGNALS
1071 /* Call the perl level handler now with risk we may be in malloc() etc. */
1072 (*PL_sighandlerp)(sig);
1074 Perl_raise_signal(aTHX_ sig);
1079 Perl_despatch_signals(pTHX)
1083 for (sig = 1; sig < SIG_SIZE; sig++) {
1084 if (PL_psig_pend[sig]) {
1085 PL_psig_pend[sig] = 0;
1086 (*PL_sighandlerp)(sig);
1092 Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg)
1101 if (strEQ(s,"__DIE__"))
1103 else if (strEQ(s,"__WARN__"))
1106 Perl_croak(aTHX_ "No such hook: %s", s);
1114 i = whichsig(s); /* ...no, a brick */
1116 if (ckWARN(WARN_SIGNAL))
1117 Perl_warner(aTHX_ WARN_SIGNAL, "No such signal: SIG%s", s);
1120 #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS
1121 if (!sig_ignoring_initted) {
1123 for (j = 0; j < SIG_SIZE; j++) sig_ignoring[j] = 0;
1124 sig_ignoring_initted = 1;
1126 sig_ignoring[i] = 0;
1128 SvREFCNT_dec(PL_psig_name[i]);
1129 SvREFCNT_dec(PL_psig_ptr[i]);
1130 PL_psig_ptr[i] = SvREFCNT_inc(sv);
1131 SvTEMP_off(sv); /* Make sure it doesn't go away on us */
1132 PL_psig_name[i] = newSVpvn(s, len);
1133 SvREADONLY_on(PL_psig_name[i]);
1135 if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) {
1137 (void)rsignal(i, &Perl_csighandler);
1139 *svp = SvREFCNT_inc(sv);
1142 s = SvPV_force(sv,len);
1143 if (strEQ(s,"IGNORE")) {
1145 #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS
1146 sig_ignoring[i] = 1;
1147 (void)rsignal(i, &Perl_csighandler);
1149 (void)rsignal(i, SIG_IGN);
1154 else if (strEQ(s,"DEFAULT") || !*s) {
1156 (void)rsignal(i, SIG_DFL);
1162 * We should warn if HINT_STRICT_REFS, but without
1163 * access to a known hint bit in a known OP, we can't
1164 * tell whether HINT_STRICT_REFS is in force or not.
1166 if (!strchr(s,':') && !strchr(s,'\''))
1167 sv_insert(sv, 0, 0, "main::", 6);
1169 (void)rsignal(i, &Perl_csighandler);
1171 *svp = SvREFCNT_inc(sv);
1175 #endif /* !PERL_MICRO */
1178 Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg)
1180 PL_sub_generation++;
1185 Perl_magic_setamagic(pTHX_ SV *sv, MAGIC *mg)
1187 /* HV_badAMAGIC_on(Sv_STASH(sv)); */
1188 PL_amagic_generation++;
1194 Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg)
1196 HV *hv = (HV*)LvTARG(sv);
1200 (void) hv_iterinit(hv);
1201 if (! SvTIED_mg((SV*)hv, PERL_MAGIC_tied))
1204 while (hv_iternext(hv))
1209 sv_setiv(sv, (IV)i);
1214 Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg)
1217 hv_ksplit((HV*)LvTARG(sv), SvIV(sv));
1222 /* caller is responsible for stack switching/cleanup */
1224 S_magic_methcall(pTHX_ SV *sv, MAGIC *mg, char *meth, I32 flags, int n, SV *val)
1230 PUSHs(SvTIED_obj(sv, mg));
1233 if (mg->mg_len >= 0)
1234 PUSHs(sv_2mortal(newSVpvn(mg->mg_ptr, mg->mg_len)));
1235 else if (mg->mg_len == HEf_SVKEY)
1236 PUSHs((SV*)mg->mg_ptr);
1238 else if (mg->mg_type == PERL_MAGIC_tiedelem) {
1239 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
1247 return call_method(meth, flags);
1251 S_magic_methpack(pTHX_ SV *sv, MAGIC *mg, char *meth)
1257 PUSHSTACKi(PERLSI_MAGIC);
1259 if (magic_methcall(sv, mg, meth, G_SCALAR, 2, NULL)) {
1260 sv_setsv(sv, *PL_stack_sp--);
1270 Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg)
1272 magic_methpack(sv,mg,"FETCH");
1274 mg->mg_flags |= MGf_GSKIP;
1279 Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg)
1283 PUSHSTACKi(PERLSI_MAGIC);
1284 magic_methcall(sv, mg, "STORE", G_SCALAR|G_DISCARD, 3, sv);
1291 Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg)
1293 return magic_methpack(sv,mg,"DELETE");
1298 Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg)
1305 PUSHSTACKi(PERLSI_MAGIC);
1306 if (magic_methcall(sv, mg, "FETCHSIZE", G_SCALAR, 2, NULL)) {
1307 sv = *PL_stack_sp--;
1308 retval = (U32) SvIV(sv)-1;
1317 Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg)
1322 PUSHSTACKi(PERLSI_MAGIC);
1324 XPUSHs(SvTIED_obj(sv, mg));
1326 call_method("CLEAR", G_SCALAR|G_DISCARD);
1333 Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key)
1336 const char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
1340 PUSHSTACKi(PERLSI_MAGIC);
1343 PUSHs(SvTIED_obj(sv, mg));
1348 if (call_method(meth, G_SCALAR))
1349 sv_setsv(key, *PL_stack_sp--);
1358 Perl_magic_existspack(pTHX_ SV *sv, MAGIC *mg)
1360 return magic_methpack(sv,mg,"EXISTS");
1364 Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg)
1374 svp = av_fetch(GvAV(gv),
1375 atoi(MgPV(mg,n_a)), FALSE);
1376 if (svp && SvIOKp(*svp) && (o = INT2PTR(OP*,SvIVX(*svp))))
1382 Perl_magic_getarylen(pTHX_ SV *sv, MAGIC *mg)
1384 sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + PL_curcop->cop_arybase);
1389 Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg)
1391 av_fill((AV*)mg->mg_obj, SvIV(sv) - PL_curcop->cop_arybase);
1396 Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg)
1398 SV* lsv = LvTARG(sv);
1400 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) {
1401 mg = mg_find(lsv, PERL_MAGIC_regex_global);
1402 if (mg && mg->mg_len >= 0) {
1405 sv_pos_b2u(lsv, &i);
1406 sv_setiv(sv, i + PL_curcop->cop_arybase);
1415 Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg)
1417 SV* lsv = LvTARG(sv);
1424 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv))
1425 mg = mg_find(lsv, PERL_MAGIC_regex_global);
1429 sv_magic(lsv, (SV*)0, PERL_MAGIC_regex_global, Nullch, 0);
1430 mg = mg_find(lsv, PERL_MAGIC_regex_global);
1432 else if (!SvOK(sv)) {
1436 len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv);
1438 pos = SvIV(sv) - PL_curcop->cop_arybase;
1441 ulen = sv_len_utf8(lsv);
1456 sv_pos_u2b(lsv, &p, 0);
1461 mg->mg_flags &= ~MGf_MINMATCH;
1467 Perl_magic_getglob(pTHX_ SV *sv, MAGIC *mg)
1469 if (SvFAKE(sv)) { /* FAKE globs can get coerced */
1471 gv_efullname3(sv,((GV*)sv), "*");
1475 gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */
1480 Perl_magic_setglob(pTHX_ SV *sv, MAGIC *mg)
1489 if (*s == '*' && s[1])
1491 gv = gv_fetchpv(s,TRUE, SVt_PVGV);
1496 GvGP(sv) = gp_ref(GvGP(gv));
1501 Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg)
1504 SV *lsv = LvTARG(sv);
1505 char *tmps = SvPV(lsv,len);
1506 I32 offs = LvTARGOFF(sv);
1507 I32 rem = LvTARGLEN(sv);
1510 sv_pos_u2b(lsv, &offs, &rem);
1513 if (rem + offs > len)
1515 sv_setpvn(sv, tmps + offs, (STRLEN)rem);
1522 Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg)
1525 char *tmps = SvPV(sv, len);
1526 SV *lsv = LvTARG(sv);
1527 I32 lvoff = LvTARGOFF(sv);
1528 I32 lvlen = LvTARGLEN(sv);
1531 sv_utf8_upgrade(lsv);
1532 sv_pos_u2b(lsv, &lvoff, &lvlen);
1533 sv_insert(lsv, lvoff, lvlen, tmps, len);
1536 else if (lsv && SvUTF8(lsv)) {
1537 sv_pos_u2b(lsv, &lvoff, &lvlen);
1538 tmps = (char*)bytes_to_utf8((U8*)tmps, &len);
1539 sv_insert(lsv, lvoff, lvlen, tmps, len);
1543 sv_insert(lsv, lvoff, lvlen, tmps, len);
1549 Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg)
1551 TAINT_IF((mg->mg_len & 1) ||
1552 ((mg->mg_len & 2) && mg->mg_obj == sv)); /* kludge */
1557 Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg)
1559 if (PL_localizing) {
1560 if (PL_localizing == 1)
1565 else if (PL_tainted)
1573 Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg)
1575 SV *lsv = LvTARG(sv);
1582 sv_setuv(sv, do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(sv)));
1587 Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg)
1589 do_vecset(sv); /* XXX slurp this routine */
1594 Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg)
1597 if (LvTARGLEN(sv)) {
1599 SV *ahv = LvTARG(sv);
1600 if (SvTYPE(ahv) == SVt_PVHV) {
1601 HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, FALSE, 0);
1606 SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, FALSE, 0);
1612 AV* av = (AV*)LvTARG(sv);
1613 if ((I32)LvTARGOFF(sv) <= AvFILL(av))
1614 targ = AvARRAY(av)[LvTARGOFF(sv)];
1616 if (targ && targ != &PL_sv_undef) {
1617 /* somebody else defined it for us */
1618 SvREFCNT_dec(LvTARG(sv));
1619 LvTARG(sv) = SvREFCNT_inc(targ);
1621 SvREFCNT_dec(mg->mg_obj);
1622 mg->mg_obj = Nullsv;
1623 mg->mg_flags &= ~MGf_REFCOUNTED;
1628 sv_setsv(sv, targ ? targ : &PL_sv_undef);
1633 Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg)
1638 sv_setsv(LvTARG(sv), sv);
1639 SvSETMAGIC(LvTARG(sv));
1645 Perl_vivify_defelem(pTHX_ SV *sv)
1650 if (!LvTARGLEN(sv) || !(mg = mg_find(sv, PERL_MAGIC_defelem)))
1653 SV *ahv = LvTARG(sv);
1655 if (SvTYPE(ahv) == SVt_PVHV) {
1656 HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0);
1661 SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, TRUE, 0);
1665 if (!value || value == &PL_sv_undef)
1666 Perl_croak(aTHX_ PL_no_helem, SvPV(mg->mg_obj, n_a));
1669 AV* av = (AV*)LvTARG(sv);
1670 if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av))
1671 LvTARG(sv) = Nullsv; /* array can't be extended */
1673 SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE);
1674 if (!svp || (value = *svp) == &PL_sv_undef)
1675 Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv));
1678 (void)SvREFCNT_inc(value);
1679 SvREFCNT_dec(LvTARG(sv));
1682 SvREFCNT_dec(mg->mg_obj);
1683 mg->mg_obj = Nullsv;
1684 mg->mg_flags &= ~MGf_REFCOUNTED;
1688 Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg)
1690 AV *av = (AV*)mg->mg_obj;
1691 SV **svp = AvARRAY(av);
1692 I32 i = AvFILLp(av);
1694 if (svp[i] && svp[i] != &PL_sv_undef) {
1695 if (!SvWEAKREF(svp[i]))
1696 Perl_croak(aTHX_ "panic: magic_killbackrefs");
1697 /* XXX Should we check that it hasn't changed? */
1699 (void)SvOK_off(svp[i]);
1700 SvWEAKREF_off(svp[i]);
1701 svp[i] = &PL_sv_undef;
1709 Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg)
1717 Perl_magic_setbm(pTHX_ SV *sv, MAGIC *mg)
1719 sv_unmagic(sv, PERL_MAGIC_bm);
1725 Perl_magic_setfm(pTHX_ SV *sv, MAGIC *mg)
1727 sv_unmagic(sv, PERL_MAGIC_fm);
1733 Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg)
1735 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
1737 if (uf && uf->uf_set)
1738 (*uf->uf_set)(aTHX_ uf->uf_index, sv);
1743 Perl_magic_freeregexp(pTHX_ SV *sv, MAGIC *mg)
1745 regexp *re = (regexp *)mg->mg_obj;
1750 #ifdef USE_LOCALE_COLLATE
1752 Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg)
1755 * RenE<eacute> Descartes said "I think not."
1756 * and vanished with a faint plop.
1759 Safefree(mg->mg_ptr);
1765 #endif /* USE_LOCALE_COLLATE */
1768 Perl_magic_set(pTHX_ SV *sv, MAGIC *mg)
1773 switch (*mg->mg_ptr) {
1774 case '\001': /* ^A */
1775 sv_setsv(PL_bodytarget, sv);
1777 case '\003': /* ^C */
1778 PL_minus_c = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1781 case '\004': /* ^D */
1782 PL_debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | DEBUG_TOP_FLAG;
1783 DEBUG_x(dump_all());
1785 case '\005': /* ^E */
1786 if (*(mg->mg_ptr+1) == '\0') {
1787 #ifdef MACOS_TRADITIONAL
1788 gMacPerl_OSErr = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1791 set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1794 SetLastError( SvIV(sv) );
1797 os2_setsyserrno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1799 /* will anyone ever use this? */
1800 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4);
1806 else if (strEQ(mg->mg_ptr+1, "NCODING")) {
1808 sv_setsv(PL_encoding, sv);
1810 PL_encoding = newSVsv(sv);
1812 case '\006': /* ^F */
1813 PL_maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1815 case '\010': /* ^H */
1816 PL_hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1818 case '\011': /* ^I */ /* NOT \t in EBCDIC */
1820 Safefree(PL_inplace);
1822 PL_inplace = savepv(SvPV(sv,len));
1824 PL_inplace = Nullch;
1826 case '\017': /* ^O */
1827 if (*(mg->mg_ptr+1) == '\0') {
1829 Safefree(PL_osname);
1831 PL_osname = savepv(SvPV(sv,len));
1835 else if (strEQ(mg->mg_ptr, "\017PEN")) {
1836 if (!PL_compiling.cop_io)
1837 PL_compiling.cop_io = newSVsv(sv);
1839 sv_setsv(PL_compiling.cop_io,sv);
1842 case '\020': /* ^P */
1843 PL_perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1844 if (PL_perldb && !PL_DBsingle)
1847 case '\024': /* ^T */
1849 PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv));
1851 PL_basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1854 case '\027': /* ^W & $^WARNING_BITS & ^WIDE_SYSTEM_CALLS */
1855 if (*(mg->mg_ptr+1) == '\0') {
1856 if ( ! (PL_dowarn & G_WARN_ALL_MASK)) {
1857 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1858 PL_dowarn = (PL_dowarn & ~G_WARN_ON)
1859 | (i ? G_WARN_ON : G_WARN_OFF) ;
1862 else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) {
1863 if ( ! (PL_dowarn & G_WARN_ALL_MASK)) {
1864 if (!SvPOK(sv) && PL_localizing) {
1865 sv_setpvn(sv, WARN_NONEstring, WARNsize);
1866 PL_compiling.cop_warnings = pWARN_NONE;
1871 int accumulate = 0 ;
1872 int any_fatals = 0 ;
1873 char * ptr = (char*)SvPV(sv, len) ;
1874 for (i = 0 ; i < len ; ++i) {
1875 accumulate |= ptr[i] ;
1876 any_fatals |= (ptr[i] & 0xAA) ;
1879 PL_compiling.cop_warnings = pWARN_NONE;
1880 else if (isWARN_on(sv, WARN_ALL) && !any_fatals) {
1881 PL_compiling.cop_warnings = pWARN_ALL;
1882 PL_dowarn |= G_WARN_ONCE ;
1885 if (specialWARN(PL_compiling.cop_warnings))
1886 PL_compiling.cop_warnings = newSVsv(sv) ;
1888 sv_setsv(PL_compiling.cop_warnings, sv);
1889 if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE))
1890 PL_dowarn |= G_WARN_ONCE ;
1896 else if (strEQ(mg->mg_ptr+1, "IDE_SYSTEM_CALLS"))
1897 PL_widesyscalls = SvTRUE(sv);
1900 if (PL_localizing) {
1901 if (PL_localizing == 1)
1902 SAVESPTR(PL_last_in_gv);
1904 else if (SvOK(sv) && GvIO(PL_last_in_gv))
1905 IoLINES(GvIOp(PL_last_in_gv)) = (long)SvIV(sv);
1908 Safefree(IoTOP_NAME(GvIOp(PL_defoutgv)));
1909 IoTOP_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len));
1910 IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1913 Safefree(IoFMT_NAME(GvIOp(PL_defoutgv)));
1914 IoFMT_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len));
1915 IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1918 IoPAGE_LEN(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1921 IoLINES_LEFT(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1922 if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L)
1923 IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L;
1926 IoPAGE(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1930 IO *io = GvIOp(PL_defoutgv);
1933 if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0)
1934 IoFLAGS(io) &= ~IOf_FLUSH;
1936 if (!(IoFLAGS(io) & IOf_FLUSH)) {
1937 PerlIO *ofp = IoOFP(io);
1939 (void)PerlIO_flush(ofp);
1940 IoFLAGS(io) |= IOf_FLUSH;
1946 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1947 PL_multiline = (i != 0);
1950 SvREFCNT_dec(PL_rs);
1951 PL_rs = newSVsv(sv);
1955 SvREFCNT_dec(PL_ors_sv);
1956 if (SvOK(sv) || SvGMAGICAL(sv)) {
1957 PL_ors_sv = newSVsv(sv);
1965 SvREFCNT_dec(PL_ofs_sv);
1966 if (SvOK(sv) || SvGMAGICAL(sv)) {
1967 PL_ofs_sv = newSVsv(sv);
1976 PL_ofmt = savepv(SvPV(sv,len));
1979 PL_compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1982 #ifdef COMPLEX_STATUS
1983 if (PL_localizing == 2) {
1984 PL_statusvalue = LvTARGOFF(sv);
1985 PL_statusvalue_vms = LvTARGLEN(sv);
1989 #ifdef VMSISH_STATUS
1991 STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)));
1994 STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1997 SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0,
1998 (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno);
2001 PL_uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
2002 if (PL_delaymagic) {
2003 PL_delaymagic |= DM_RUID;
2004 break; /* don't do magic till later */
2007 (void)setruid((Uid_t)PL_uid);
2010 (void)setreuid((Uid_t)PL_uid, (Uid_t)-1);
2012 #ifdef HAS_SETRESUID
2013 (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1);
2015 if (PL_uid == PL_euid) /* special case $< = $> */
2016 (void)PerlProc_setuid(PL_uid);
2018 PL_uid = PerlProc_getuid();
2019 Perl_croak(aTHX_ "setruid() not implemented");
2024 PL_uid = PerlProc_getuid();
2025 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
2028 PL_euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
2029 if (PL_delaymagic) {
2030 PL_delaymagic |= DM_EUID;
2031 break; /* don't do magic till later */
2034 (void)seteuid((Uid_t)PL_euid);
2037 (void)setreuid((Uid_t)-1, (Uid_t)PL_euid);
2039 #ifdef HAS_SETRESUID
2040 (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1);
2042 if (PL_euid == PL_uid) /* special case $> = $< */
2043 PerlProc_setuid(PL_euid);
2045 PL_euid = PerlProc_geteuid();
2046 Perl_croak(aTHX_ "seteuid() not implemented");
2051 PL_euid = PerlProc_geteuid();
2052 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
2055 PL_gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
2056 if (PL_delaymagic) {
2057 PL_delaymagic |= DM_RGID;
2058 break; /* don't do magic till later */
2061 (void)setrgid((Gid_t)PL_gid);
2064 (void)setregid((Gid_t)PL_gid, (Gid_t)-1);
2066 #ifdef HAS_SETRESGID
2067 (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1);
2069 if (PL_gid == PL_egid) /* special case $( = $) */
2070 (void)PerlProc_setgid(PL_gid);
2072 PL_gid = PerlProc_getgid();
2073 Perl_croak(aTHX_ "setrgid() not implemented");
2078 PL_gid = PerlProc_getgid();
2079 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
2082 #ifdef HAS_SETGROUPS
2084 char *p = SvPV(sv, len);
2085 Groups_t gary[NGROUPS];
2090 for (i = 0; i < NGROUPS; ++i) {
2091 while (*p && !isSPACE(*p))
2100 (void)setgroups(i, gary);
2102 #else /* HAS_SETGROUPS */
2103 PL_egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
2104 #endif /* HAS_SETGROUPS */
2105 if (PL_delaymagic) {
2106 PL_delaymagic |= DM_EGID;
2107 break; /* don't do magic till later */
2110 (void)setegid((Gid_t)PL_egid);
2113 (void)setregid((Gid_t)-1, (Gid_t)PL_egid);
2115 #ifdef HAS_SETRESGID
2116 (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1);
2118 if (PL_egid == PL_gid) /* special case $) = $( */
2119 (void)PerlProc_setgid(PL_egid);
2121 PL_egid = PerlProc_getegid();
2122 Perl_croak(aTHX_ "setegid() not implemented");
2127 PL_egid = PerlProc_getegid();
2128 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
2131 PL_chopset = SvPV_force(sv,len);
2133 #ifndef MACOS_TRADITIONAL
2135 #ifdef HAS_SETPROCTITLE
2136 /* The BSDs don't show the argv[] in ps(1) output, they
2137 * show a string from the process struct and provide
2138 * the setproctitle() routine to manipulate that. */
2141 # if __FreeBSD_version > 410001
2142 /* The leading "-" removes the "perl: " prefix,
2143 * but not the "(perl) suffix from the ps(1)
2144 * output, because that's what ps(1) shows if the
2145 * argv[] is modified. */
2146 setproctitle("-%s", s);
2147 # else /* old FreeBSDs, NetBSD, OpenBSD, anyBSD */
2148 /* This doesn't really work if you assume that
2149 * $0 = 'foobar'; will wipe out 'perl' from the $0
2150 * because in ps(1) output the result will be like
2151 * sprintf("perl: %s (perl)", s)
2152 * I guess this is a security feature:
2153 * one (a user process) cannot get rid of the original name.
2155 setproctitle("%s", s);
2162 /* See if all the arguments are contiguous in memory */
2163 for (i = 1; i < PL_origargc; i++) {
2164 if (PL_origargv[i] == s + 1
2166 || PL_origargv[i] == s + 2
2171 s += strlen(s); /* this one is ok too */
2176 /* can grab env area too? */
2177 if (PL_origenviron && (PL_origenviron[0] == s + 1)) {
2178 my_setenv("NoNe SuCh", Nullch);
2179 /* force copy of environment */
2180 for (i = 0; PL_origenviron[i]; i++)
2181 if (PL_origenviron[i] == s + 1) {
2188 PL_origalen = s - PL_origargv[0];
2190 s = SvPV_force(sv,len);
2192 if (i >= PL_origalen) {
2194 /* don't allow system to limit $0 seen by script */
2195 /* SvCUR_set(sv, i); *SvEND(sv) = '\0'; */
2196 Copy(s, PL_origargv[0], i, char);
2197 s = PL_origargv[0]+i;
2201 Copy(s, PL_origargv[0], i, char);
2202 s = PL_origargv[0]+i;
2204 while (++i < PL_origalen)
2206 s = PL_origargv[0]+i;
2207 for (i = 1; i < PL_origargc; i++)
2208 PL_origargv[i] = Nullch;
2212 #ifdef USE_5005THREADS
2214 sv_setsv(thr->errsv, sv);
2216 #endif /* USE_5005THREADS */
2221 #ifdef USE_5005THREADS
2223 Perl_magic_mutexfree(pTHX_ SV *sv, MAGIC *mg)
2225 DEBUG_S(PerlIO_printf(Perl_debug_log,
2226 "0x%"UVxf": magic_mutexfree 0x%"UVxf"\n",
2227 PTR2UV(thr), PTR2UV(sv)));
2229 Perl_croak(aTHX_ "panic: magic_mutexfree");
2230 MUTEX_DESTROY(MgMUTEXP(mg));
2231 COND_DESTROY(MgCONDP(mg));
2234 #endif /* USE_5005THREADS */
2237 Perl_whichsig(pTHX_ char *sig)
2239 register char **sigv;
2241 for (sigv = PL_sig_name+1; *sigv; sigv++)
2242 if (strEQ(sig,*sigv))
2243 return PL_sig_num[sigv - PL_sig_name];
2245 if (strEQ(sig,"CHLD"))
2249 if (strEQ(sig,"CLD"))
2255 #if !defined(PERL_IMPLICIT_CONTEXT)
2260 Perl_sighandler(int sig)
2262 #if defined(WIN32) && defined(PERL_IMPLICIT_CONTEXT)
2263 dTHXa(PL_curinterp); /* fake TLS, because signals don't do TLS */
2270 SV *sv = Nullsv, *tSv = PL_Sv;
2276 #if defined(WIN32) && defined(PERL_IMPLICIT_CONTEXT)
2277 PERL_SET_THX(aTHX); /* fake TLS, see above */
2280 if (PL_savestack_ix + 15 <= PL_savestack_max)
2282 if (PL_markstack_ptr < PL_markstack_max - 2)
2284 if (PL_retstack_ix < PL_retstack_max - 2)
2286 if (PL_scopestack_ix < PL_scopestack_max - 3)
2289 if (!PL_psig_ptr[sig])
2290 Perl_die(aTHX_ "Signal SIG%s received, but no signal handler set.\n",
2293 /* Max number of items pushed there is 3*n or 4. We cannot fix
2294 infinity, so we fix 4 (in fact 5): */
2296 PL_savestack_ix += 5; /* Protect save in progress. */
2297 SAVEDESTRUCTOR_X(unwind_handler_stack, (void*)&flags);
2300 PL_markstack_ptr++; /* Protect mark. */
2303 PL_retstack[PL_retstack_ix] = NULL;
2306 PL_scopestack_ix += 1;
2307 /* sv_2cv is too complicated, try a simpler variant first: */
2308 if (!SvROK(PL_psig_ptr[sig]) || !(cv = (CV*)SvRV(PL_psig_ptr[sig]))
2309 || SvTYPE(cv) != SVt_PVCV)
2310 cv = sv_2cv(PL_psig_ptr[sig],&st,&gv,TRUE);
2312 if (!cv || !CvROOT(cv)) {
2313 if (ckWARN(WARN_SIGNAL))
2314 Perl_warner(aTHX_ WARN_SIGNAL, "SIG%s handler \"%s\" not defined.\n",
2315 PL_sig_name[sig], (gv ? GvENAME(gv)
2322 if(PL_psig_name[sig]) {
2323 sv = SvREFCNT_inc(PL_psig_name[sig]);
2325 #if !defined(PERL_IMPLICIT_CONTEXT)
2329 sv = sv_newmortal();
2330 sv_setpv(sv,PL_sig_name[sig]);
2333 PUSHSTACKi(PERLSI_SIGNAL);
2338 call_sv((SV*)cv, G_DISCARD|G_EVAL);
2341 if (SvTRUE(ERRSV)) {
2343 #ifdef HAS_SIGPROCMASK
2344 /* Handler "died", for example to get out of a restart-able read().
2345 * Before we re-do that on its behalf re-enable the signal which was
2346 * blocked by the system when we entered.
2350 sigaddset(&set,sig);
2351 sigprocmask(SIG_UNBLOCK, &set, NULL);
2353 /* Not clear if this will work */
2354 (void)rsignal(sig, SIG_IGN);
2355 (void)rsignal(sig, &Perl_csighandler);
2357 #endif /* !PERL_MICRO */
2358 Perl_die(aTHX_ Nullformat);
2362 PL_savestack_ix -= 8; /* Unprotect save in progress. */
2368 PL_scopestack_ix -= 1;
2371 PL_op = myop; /* Apparently not needed... */
2373 PL_Sv = tSv; /* Restore global temporaries. */
2380 restore_magic(pTHX_ void *p)
2382 MGS* mgs = SSPTR(PTR2IV(p), MGS*);
2383 SV* sv = mgs->mgs_sv;
2388 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
2391 SvFLAGS(sv) |= mgs->mgs_flags;
2395 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
2398 mgs->mgs_sv = NULL; /* mark the MGS structure as restored */
2400 /* If we're still on top of the stack, pop us off. (That condition
2401 * will be satisfied if restore_magic was called explicitly, but *not*
2402 * if it's being called via leave_scope.)
2403 * The reason for doing this is that otherwise, things like sv_2cv()
2404 * may leave alloc gunk on the savestack, and some code
2405 * (e.g. sighandler) doesn't expect that...
2407 if (PL_savestack_ix == mgs->mgs_ss_ix)
2409 I32 popval = SSPOPINT;
2410 assert(popval == SAVEt_DESTRUCTOR_X);
2411 PL_savestack_ix -= 2;
2413 assert(popval == SAVEt_ALLOC);
2415 PL_savestack_ix -= popval;
2421 unwind_handler_stack(pTHX_ void *p)
2423 U32 flags = *(U32*)p;
2426 PL_savestack_ix -= 5; /* Unprotect save in progress. */
2427 /* cxstack_ix-- Not needed, die already unwound it. */
2428 #if !defined(PERL_IMPLICIT_CONTEXT)
2430 SvREFCNT_dec(sig_sv);