3 * Copyright (c) 1991-1997, 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."
18 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
23 #if defined(HAS_GETGROUPS) || defined(HAS_SETGROUPS)
30 * Use the "DESTRUCTOR" scope cleanup to reinstate magic.
37 typedef struct magic_state MGS;
39 static void restore_magic _((void *p));
46 assert(SvMAGICAL(sv));
49 mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv);
50 SAVEDESTRUCTOR(restore_magic, mgs);
54 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
64 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
67 SvFLAGS(sv) |= mgs->mgs_flags;
71 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
81 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
82 MGVTBL* vtbl = mg->mg_virtual;
84 if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP))
88 if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || vtbl->svt_clear)
104 save_magic(&mgs, sv);
107 while ((mg = *mgp) != 0) {
108 MGVTBL* vtbl = mg->mg_virtual;
109 if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) {
110 (*vtbl->svt_get)(sv, mg);
111 /* Ignore this magic if it's been deleted */
112 if ((mg == (mgp_valid ? *mgp : SvMAGIC(sv))) &&
113 (mg->mg_flags & MGf_GSKIP))
116 /* Advance to next magic (complicated by possible deletion) */
117 if (mg == (mgp_valid ? *mgp : SvMAGIC(sv))) {
118 mgp = &mg->mg_moremagic;
122 mgp = &SvMAGIC(sv); /* Re-establish pointer after sv_upgrade */
138 save_magic(&mgs, sv);
140 for (mg = SvMAGIC(sv); mg; mg = nextmg) {
141 MGVTBL* vtbl = mg->mg_virtual;
142 nextmg = mg->mg_moremagic; /* it may delete itself */
143 if (mg->mg_flags & MGf_GSKIP) {
144 mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */
147 if (vtbl && vtbl->svt_set)
148 (*vtbl->svt_set)(sv, mg);
163 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
164 MGVTBL* vtbl = mg->mg_virtual;
165 if (vtbl && vtbl->svt_len) {
169 save_magic(&mgs, sv);
170 /* omit MGf_GSKIP -- not changed here */
171 len = (*vtbl->svt_len)(sv, mg);
177 junk = SvPV(sv, len);
189 save_magic(&mgs, sv);
191 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
192 MGVTBL* vtbl = mg->mg_virtual;
193 /* omit GSKIP -- never set here */
195 if (vtbl && vtbl->svt_clear)
196 (*vtbl->svt_clear)(sv, mg);
209 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
210 if (mg->mg_type == type)
217 mg_copy(sv, nsv, key, klen)
225 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
226 if (isUPPER(mg->mg_type)) {
227 sv_magic(nsv, mg->mg_obj, toLOWER(mg->mg_type), key, klen);
240 for (mg = SvMAGIC(sv); mg; mg = moremagic) {
241 MGVTBL* vtbl = mg->mg_virtual;
242 moremagic = mg->mg_moremagic;
243 if (vtbl && vtbl->svt_free)
244 (*vtbl->svt_free)(sv, mg);
245 if (mg->mg_ptr && mg->mg_type != 'g')
247 Safefree(mg->mg_ptr);
248 else if (mg->mg_len == HEf_SVKEY)
249 SvREFCNT_dec((SV*)mg->mg_ptr);
250 if (mg->mg_flags & MGf_REFCOUNTED)
251 SvREFCNT_dec(mg->mg_obj);
258 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
273 switch (*mg->mg_ptr) {
274 case '1': case '2': case '3': case '4':
275 case '5': case '6': case '7': case '8': case '9': case '&':
276 if (curpm && (rx = curpm->op_pmregexp)) {
277 paren = atoi(mg->mg_ptr);
279 if (paren <= rx->nparens &&
280 (s = rx->startp[paren]) &&
281 (t = rx->endp[paren]))
290 if (curpm && (rx = curpm->op_pmregexp)) {
291 paren = rx->lastparen;
297 if (curpm && (rx = curpm->op_pmregexp)) {
298 if ((s = rx->subbeg) && rx->startp[0]) {
299 i = rx->startp[0] - s;
306 if (curpm && (rx = curpm->op_pmregexp)) {
307 if (rx->subend && (s = rx->endp[0])) {
315 return (STRLEN)ofslen;
317 return (STRLEN)orslen;
320 if (!SvPOK(sv) && SvNIOK(sv))
338 switch (*mg->mg_ptr) {
339 case '\001': /* ^A */
340 sv_setsv(sv, bodytarget);
342 case '\004': /* ^D */
343 sv_setiv(sv, (IV)(debug & 32767));
345 case '\005': /* ^E */
348 # include <descrip.h>
349 # include <starlet.h>
351 $DESCRIPTOR(msgdsc,msg);
352 sv_setnv(sv,(double) vaxc$errno);
353 if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1)
354 sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length);
360 sv_setnv(sv, (double)Perl_rc);
361 sv_setpv(sv, os2error(Perl_rc));
363 sv_setnv(sv, (double)errno);
364 sv_setpv(sv, errno ? Strerror(errno) : "");
367 SvNOK_on(sv); /* what a wonderful hack! */
369 case '\006': /* ^F */
370 sv_setiv(sv, (IV)maxsysfd);
372 case '\010': /* ^H */
373 sv_setiv(sv, (IV)hints);
377 sv_setpv(sv, inplace);
379 sv_setsv(sv, &sv_undef);
381 case '\017': /* ^O */
382 sv_setpv(sv, osname);
384 case '\020': /* ^P */
385 sv_setiv(sv, (IV)perldb);
387 case '\024': /* ^T */
389 sv_setnv(sv, basetime);
391 sv_setiv(sv, (IV)basetime);
394 case '\027': /* ^W */
395 sv_setiv(sv, (IV)dowarn);
397 case '1': case '2': case '3': case '4':
398 case '5': case '6': case '7': case '8': case '9': case '&':
399 if (curpm && (rx = curpm->op_pmregexp)) {
400 paren = atoi(GvENAME((GV*)mg->mg_obj));
402 if (paren <= rx->nparens &&
403 (s = rx->startp[paren]) &&
404 (t = rx->endp[paren]))
411 was_tainted = tainted;
416 tainted = was_tainted || rx->exec_tainted;
421 sv_setsv(sv,&sv_undef);
424 if (curpm && (rx = curpm->op_pmregexp)) {
425 paren = rx->lastparen;
429 sv_setsv(sv,&sv_undef);
432 if (curpm && (rx = curpm->op_pmregexp)) {
433 if ((s = rx->subbeg) && rx->startp[0]) {
434 i = rx->startp[0] - s;
438 sv_setsv(sv,&sv_undef);
441 if (curpm && (rx = curpm->op_pmregexp)) {
442 if (rx->subend && (s = rx->endp[0])) {
447 sv_setsv(sv,&sv_undef);
451 if (GvIO(last_in_gv)) {
452 sv_setiv(sv, (IV)IoLINES(GvIO(last_in_gv)));
457 sv_setiv(sv, (IV)STATUS_CURRENT);
458 #ifdef COMPLEX_STATUS
459 LvTARGOFF(sv) = statusvalue;
460 LvTARGLEN(sv) = statusvalue_vms;
464 s = IoTOP_NAME(GvIOp(defoutgv));
468 sv_setpv(sv,GvENAME(defoutgv));
473 s = IoFMT_NAME(GvIOp(defoutgv));
475 s = GvENAME(defoutgv);
480 sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(defoutgv)));
483 sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(defoutgv)));
486 sv_setiv(sv, (IV)IoPAGE(GvIOp(defoutgv)));
494 sv_setiv(sv, (IV)curcop->cop_arybase);
497 sv_setiv(sv, (IV)(IoFLAGS(GvIOp(defoutgv)) & IOf_FLUSH) != 0 );
500 sv_setpvn(sv,ofs,ofslen);
503 sv_setpvn(sv,ors,orslen);
510 sv_setnv(sv, (double)((errno == EVMSERR) ? vaxc$errno : errno));
511 sv_setpv(sv, errno ? Strerror(errno) : "");
514 int saveerrno = errno;
515 sv_setnv(sv, (double)errno);
517 if (errno == errno_isOS2) sv_setpv(sv, os2error(Perl_rc));
520 sv_setpv(sv, errno ? Strerror(errno) : "");
524 SvNOK_on(sv); /* what a wonderful hack! */
527 sv_setiv(sv, (IV)uid);
530 sv_setiv(sv, (IV)euid);
533 sv_setiv(sv, (IV)gid);
534 sv_setpvf(sv, "%vd", (IV)gid);
537 sv_setiv(sv, (IV)egid);
538 sv_setpvf(sv, "%vd", (IV)egid);
542 Groups_t gary[NGROUPS];
543 i = getgroups(NGROUPS,gary);
545 sv_catpvf(sv, " %vd", (IV)gary[i]);
548 SvIOK_on(sv); /* what a wonderful hack! */
559 magic_getuvar(sv, mg)
563 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
565 if (uf && uf->uf_val)
566 (*uf->uf_val)(uf->uf_index, sv);
584 #ifdef DYNAMIC_ENV_FETCH
585 /* We just undefd an environment var. Is a replacement */
586 /* waiting in the wings? */
589 if ((valp = hv_fetch(GvHVn(envgv), ptr, klen, FALSE)))
590 s = SvPV(*valp, len);
594 #if !defined(OS2) && !defined(AMIGAOS) && !defined(_WIN32)
595 /* And you'll never guess what the dog had */
596 /* in its mouth... */
598 MgTAINTEDDIR_off(mg);
600 if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) {
601 char pathbuf[256], eltbuf[256], *cp, *elt = s;
605 do { /* DCL$PATH may be a search list */
606 while (1) { /* as may dev portion of any element */
607 if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) {
608 if ( *(cp+1) == '.' || *(cp+1) == '-' ||
609 cando_by_name(S_IWUSR,0,elt) ) {
614 if ((cp = strchr(elt, ':')) != Nullch)
616 if (my_trnlnm(elt, eltbuf, j++))
622 } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf));
625 if (s && klen == 4 && strEQ(ptr,"PATH")) {
626 char *strend = s + len;
630 s = cpytill(tokenbuf, s, strend, ':', &i);
633 || (Stat(tokenbuf, &st) == 0 && (st.st_mode & 2)) ) {
640 #endif /* neither OS2 nor AMIGAOS nor _WIN32 */
646 magic_clearenv(sv,mg)
650 my_setenv(MgPV(mg,na),Nullch);
660 /* Are we fetching a signal entry? */
661 i = whichsig(MgPV(mg,na));
664 sv_setsv(sv,psig_ptr[i]);
666 Sighandler_t sigstate = rsignal_state(i);
668 /* cache state so we don't fetch it again */
669 if(sigstate == SIG_IGN)
670 sv_setpv(sv,"IGNORE");
672 sv_setsv(sv,&sv_undef);
673 psig_ptr[i] = SvREFCNT_inc(sv);
680 magic_clearsig(sv,mg)
685 /* Are we clearing a signal entry? */
686 i = whichsig(MgPV(mg,na));
689 SvREFCNT_dec(psig_ptr[i]);
693 SvREFCNT_dec(psig_name[i]);
711 if (strEQ(s,"__DIE__"))
713 else if (strEQ(s,"__WARN__"))
715 else if (strEQ(s,"__PARSE__"))
718 croak("No such hook: %s", s);
726 i = whichsig(s); /* ...no, a brick */
728 if (dowarn || strEQ(s,"ALARM"))
729 warn("No such signal: SIG%s", s);
732 SvREFCNT_dec(psig_name[i]);
733 SvREFCNT_dec(psig_ptr[i]);
734 psig_ptr[i] = SvREFCNT_inc(sv);
735 SvTEMP_off(sv); /* Make sure it doesn't go away on us */
736 psig_name[i] = newSVpv(s, strlen(s));
737 SvREADONLY_on(psig_name[i]);
739 if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) {
741 (void)rsignal(i, sighandler);
743 *svp = SvREFCNT_inc(sv);
746 s = SvPV_force(sv,na);
747 if (strEQ(s,"IGNORE")) {
749 (void)rsignal(i, SIG_IGN);
753 else if (strEQ(s,"DEFAULT") || !*s) {
755 (void)rsignal(i, SIG_DFL);
761 * We should warn if HINT_STRICT_REFS, but without
762 * access to a known hint bit in a known OP, we can't
763 * tell whether HINT_STRICT_REFS is in force or not.
765 if (!strchr(s,':') && !strchr(s,'\''))
766 sv_setpv(sv, form("main::%s", s));
768 (void)rsignal(i, sighandler);
770 *svp = SvREFCNT_inc(sv);
787 magic_setamagic(sv,mg)
791 /* HV_badAMAGIC_on(Sv_STASH(sv)); */
796 #endif /* OVERLOAD */
799 magic_setnkeys(sv,mg)
804 hv_ksplit((HV*)LvTARG(sv), SvIV(sv));
805 LvTARG(sv) = Nullsv; /* Don't allow a ref to reassign this. */
811 magic_methpack(sv,mg,meth)
825 PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
826 else if (mg->mg_len == HEf_SVKEY)
827 PUSHs((SV*)mg->mg_ptr);
829 else if (mg->mg_type == 'p')
830 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
833 if (perl_call_method(meth, G_SCALAR))
834 sv_setsv(sv, *stack_sp--);
846 magic_methpack(sv,mg,"FETCH");
848 mg->mg_flags |= MGf_GSKIP;
864 PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
865 else if (mg->mg_len == HEf_SVKEY)
866 PUSHs((SV*)mg->mg_ptr);
868 else if (mg->mg_type == 'p')
869 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
873 perl_call_method("STORE", G_SCALAR|G_DISCARD);
879 magic_clearpack(sv,mg)
883 return magic_methpack(sv,mg,"DELETE");
886 int magic_wipepack(sv,mg)
896 perl_call_method("CLEAR", G_SCALAR|G_DISCARD);
902 magic_nextpack(sv,mg,key)
908 char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
919 if (perl_call_method(meth, G_SCALAR))
920 sv_setsv(key, *stack_sp--);
928 magic_existspack(sv,mg)
932 return magic_methpack(sv,mg,"EXISTS");
936 magic_setdbline(sv,mg)
947 svp = av_fetch(GvAV(gv),
948 atoi(MgPV(mg,na)), FALSE);
949 if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp)))
952 warn("Can't break at that line\n");
957 magic_getarylen(sv,mg)
961 sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + curcop->cop_arybase);
966 magic_setarylen(sv,mg)
970 av_fill((AV*)mg->mg_obj, SvIV(sv) - curcop->cop_arybase);
979 SV* lsv = LvTARG(sv);
981 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) {
982 mg = mg_find(lsv, 'g');
983 if (mg && mg->mg_len >= 0) {
984 sv_setiv(sv, mg->mg_len + curcop->cop_arybase);
997 SV* lsv = LvTARG(sv);
1003 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv))
1004 mg = mg_find(lsv, 'g');
1008 sv_magic(lsv, (SV*)0, 'g', Nullch, 0);
1009 mg = mg_find(lsv, 'g');
1011 else if (!SvOK(sv)) {
1015 len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv);
1017 pos = SvIV(sv) - curcop->cop_arybase;
1026 mg->mg_flags &= ~MGf_MINMATCH;
1032 magic_getglob(sv,mg)
1036 if (SvFAKE(sv)) { /* FAKE globs can get coerced */
1038 gv_efullname3(sv,((GV*)sv), "*");
1042 gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */
1047 magic_setglob(sv,mg)
1057 if (*s == '*' && s[1])
1059 gv = gv_fetchpv(s,TRUE, SVt_PVGV);
1064 GvGP(sv) = gp_ref(GvGP(gv));
1069 magic_setsubstr(sv,mg)
1074 char *tmps = SvPV(sv,len);
1075 sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len);
1080 magic_gettaint(sv,mg)
1084 TAINT_IF((mg->mg_len & 1) ||
1085 (mg->mg_len & 2) && mg->mg_obj == sv); /* kludge */
1090 magic_settaint(sv,mg)
1095 if (localizing == 1)
1112 do_vecset(sv); /* XXX slurp this routine */
1117 magic_getdefelem(sv,mg)
1122 if (LvTARGLEN(sv)) {
1124 HV* hv = (HV*)LvTARG(sv);
1125 HE* he = hv_fetch_ent(hv, mg->mg_obj, FALSE, 0);
1130 AV* av = (AV*)LvTARG(sv);
1131 if ((I32)LvTARGOFF(sv) <= AvFILL(av))
1132 targ = AvARRAY(av)[LvTARGOFF(sv)];
1134 if (targ && targ != &sv_undef) {
1135 /* somebody else defined it for us */
1136 SvREFCNT_dec(LvTARG(sv));
1137 LvTARG(sv) = SvREFCNT_inc(targ);
1139 SvREFCNT_dec(mg->mg_obj);
1140 mg->mg_obj = Nullsv;
1141 mg->mg_flags &= ~MGf_REFCOUNTED;
1146 sv_setsv(sv, targ ? targ : &sv_undef);
1151 magic_setdefelem(sv,mg)
1158 sv_setsv(LvTARG(sv), sv);
1159 SvSETMAGIC(LvTARG(sv));
1165 magic_freedefelem(sv,mg)
1169 SvREFCNT_dec(LvTARG(sv));
1180 if (!LvTARGLEN(sv) || !(mg = mg_find(sv, 'y')))
1183 HV* hv = (HV*)LvTARG(sv);
1184 HE* he = hv_fetch_ent(hv, mg->mg_obj, TRUE, 0);
1185 if (!he || (value = HeVAL(he)) == &sv_undef)
1186 croak(no_helem, SvPV(mg->mg_obj, na));
1189 AV* av = (AV*)LvTARG(sv);
1190 if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av))
1191 LvTARG(sv) = Nullsv; /* array can't be extended */
1193 SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE);
1194 if (!svp || (value = *svp) == &sv_undef)
1195 croak(no_aelem, (I32)LvTARGOFF(sv));
1198 SvREFCNT_inc(value);
1199 SvREFCNT_dec(LvTARG(sv));
1202 SvREFCNT_dec(mg->mg_obj);
1203 mg->mg_obj = Nullsv;
1204 mg->mg_flags &= ~MGf_REFCOUNTED;
1208 magic_setmglob(sv,mg)
1222 sv_unmagic(sv, 'B');
1232 sv_unmagic(sv, 'f');
1238 magic_setuvar(sv,mg)
1242 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
1244 if (uf && uf->uf_set)
1245 (*uf->uf_set)(uf->uf_index, sv);
1249 #ifdef USE_LOCALE_COLLATE
1251 magic_setcollxfrm(sv,mg)
1256 * René Descartes said "I think not."
1257 * and vanished with a faint plop.
1260 Safefree(mg->mg_ptr);
1266 #endif /* USE_LOCALE_COLLATE */
1276 switch (*mg->mg_ptr) {
1277 case '\001': /* ^A */
1278 sv_setsv(bodytarget, sv);
1280 case '\004': /* ^D */
1281 debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000;
1282 DEBUG_x(dump_all());
1284 case '\005': /* ^E */
1286 set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1288 /* will anyone ever use this? */
1289 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4);
1292 case '\006': /* ^F */
1293 maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1295 case '\010': /* ^H */
1296 hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1302 inplace = savepv(SvPV(sv,na));
1306 case '\017': /* ^O */
1310 osname = savepv(SvPV(sv,na));
1314 case '\020': /* ^P */
1315 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1324 case '\024': /* ^T */
1326 basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv));
1328 basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1331 case '\027': /* ^W */
1332 dowarn = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1336 if (localizing == 1)
1337 save_sptr((SV**)&last_in_gv);
1339 else if (SvOK(sv) && GvIO(last_in_gv))
1340 IoLINES(GvIOp(last_in_gv)) = (long)SvIV(sv);
1343 Safefree(IoTOP_NAME(GvIOp(defoutgv)));
1344 IoTOP_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na));
1345 IoTOP_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1348 Safefree(IoFMT_NAME(GvIOp(defoutgv)));
1349 IoFMT_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na));
1350 IoFMT_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1353 IoPAGE_LEN(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1356 IoLINES_LEFT(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1357 if (IoLINES_LEFT(GvIOp(defoutgv)) < 0L)
1358 IoLINES_LEFT(GvIOp(defoutgv)) = 0L;
1361 IoPAGE(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1365 IO *io = GvIOp(defoutgv);
1366 if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0)
1367 IoFLAGS(io) &= ~IOf_FLUSH;
1369 if (!(IoFLAGS(io) & IOf_FLUSH)) {
1370 PerlIO *ofp = IoOFP(io);
1372 (void)PerlIO_flush(ofp);
1373 IoFLAGS(io) |= IOf_FLUSH;
1379 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1380 multiline = (i != 0);
1386 rs = SvREFCNT_inc(nrs);
1391 if (SvOK(sv) || SvGMAGICAL(sv))
1392 ors = savepv(SvPV(sv,orslen));
1401 ofs = savepv(SvPV(sv, ofslen));
1406 ofmt = savepv(SvPV(sv,na));
1409 compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1412 #ifdef COMPLEX_STATUS
1413 if (localizing == 2) {
1414 statusvalue = LvTARGOFF(sv);
1415 statusvalue_vms = LvTARGLEN(sv);
1419 #ifdef VMSISH_STATUS
1421 STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)));
1424 STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1427 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv),
1428 (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno);
1431 uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1433 delaymagic |= DM_RUID;
1434 break; /* don't do magic till later */
1437 (void)setruid((Uid_t)uid);
1440 (void)setreuid((Uid_t)uid, (Uid_t)-1);
1442 #ifdef HAS_SETRESUID
1443 (void)setresuid((Uid_t)uid, (Uid_t)-1, (Uid_t)-1);
1445 if (uid == euid) /* special case $< = $> */
1448 uid = (I32)getuid();
1449 croak("setruid() not implemented");
1454 uid = (I32)getuid();
1455 tainting |= (uid && (euid != uid || egid != gid));
1458 euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1460 delaymagic |= DM_EUID;
1461 break; /* don't do magic till later */
1464 (void)seteuid((Uid_t)euid);
1467 (void)setreuid((Uid_t)-1, (Uid_t)euid);
1469 #ifdef HAS_SETRESUID
1470 (void)setresuid((Uid_t)-1, (Uid_t)euid, (Uid_t)-1);
1472 if (euid == uid) /* special case $> = $< */
1475 euid = (I32)geteuid();
1476 croak("seteuid() not implemented");
1481 euid = (I32)geteuid();
1482 tainting |= (uid && (euid != uid || egid != gid));
1485 gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1487 delaymagic |= DM_RGID;
1488 break; /* don't do magic till later */
1491 (void)setrgid((Gid_t)gid);
1494 (void)setregid((Gid_t)gid, (Gid_t)-1);
1496 #ifdef HAS_SETRESGID
1497 (void)setresgid((Gid_t)gid, (Gid_t)-1, (Gid_t) 1);
1499 if (gid == egid) /* special case $( = $) */
1502 gid = (I32)getgid();
1503 croak("setrgid() not implemented");
1508 gid = (I32)getgid();
1509 tainting |= (uid && (euid != uid || egid != gid));
1512 #ifdef HAS_SETGROUPS
1514 char *p = SvPV(sv, na);
1515 Groups_t gary[NGROUPS];
1517 SET_NUMERIC_STANDARD();
1520 egid = I_V(atof(p));
1521 for (i = 0; i < NGROUPS; ++i) {
1522 while (*p && !isSPACE(*p))
1528 gary[i] = I_V(atof(p));
1531 (void)setgroups(i, gary);
1533 #else /* HAS_SETGROUPS */
1534 egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1535 #endif /* HAS_SETGROUPS */
1537 delaymagic |= DM_EGID;
1538 break; /* don't do magic till later */
1541 (void)setegid((Gid_t)egid);
1544 (void)setregid((Gid_t)-1, (Gid_t)egid);
1546 #ifdef HAS_SETRESGID
1547 (void)setresgid((Gid_t)-1, (Gid_t)egid, (Gid_t)-1);
1549 if (egid == gid) /* special case $) = $( */
1552 egid = (I32)getegid();
1553 croak("setegid() not implemented");
1558 egid = (I32)getegid();
1559 tainting |= (uid && (euid != uid || egid != gid));
1562 chopset = SvPV_force(sv,na);
1568 /* See if all the arguments are contiguous in memory */
1569 for (i = 1; i < origargc; i++) {
1570 if (origargv[i] == s + 1)
1571 s += strlen(++s); /* this one is ok too */
1573 /* can grab env area too? */
1574 if (origenviron && origenviron[0] == s + 1) {
1575 my_setenv("NoNeSuCh", Nullch);
1576 /* force copy of environment */
1577 for (i = 0; origenviron[i]; i++)
1578 if (origenviron[i] == s + 1)
1581 origalen = s - origargv[0];
1583 s = SvPV_force(sv,len);
1585 if (i >= origalen) {
1589 Copy(s, origargv[0], i, char);
1592 Copy(s, origargv[0], i, char);
1595 while (++i < origalen)
1598 for (i = 1; i < origargc; i++)
1599 origargv[i] = Nullch;
1610 register char **sigv;
1612 for (sigv = sig_name+1; *sigv; sigv++)
1613 if (strEQ(sig,*sigv))
1614 return sig_num[sigv - sig_name];
1616 if (strEQ(sig,"CHLD"))
1620 if (strEQ(sig,"CLD"))
1638 die("Signal SIG%s received, but no signal handler set.\n",
1641 cv = sv_2cv(psig_ptr[sig],&st,&gv,TRUE);
1642 if (!cv || !CvROOT(cv)) {
1644 warn("SIG%s handler \"%s\" not defined.\n",
1645 sig_name[sig], GvENAME(gv) );
1649 oldstack = curstack;
1650 if (curstack != signalstack)
1651 AvFILL(signalstack) = 0;
1652 SWITCHSTACK(curstack, signalstack);
1655 sv = SvREFCNT_inc(psig_name[sig]);
1657 sv = sv_newmortal();
1658 sv_setpv(sv,sig_name[sig]);
1664 perl_call_sv((SV*)cv, G_DISCARD);
1666 SWITCHSTACK(signalstack, oldstack);