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);
535 (void)sprintf(s,"%d",(int)gid);
538 sv_setiv(sv, (IV)egid);
540 (void)sprintf(s,"%d",(int)egid);
545 Groups_t gary[NGROUPS];
547 i = getgroups(NGROUPS,gary);
549 (void)sprintf(s," %d", (int)gary[i]);
555 SvIOK_on(sv); /* what a wonderful hack! */
566 magic_getuvar(sv, mg)
570 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
572 if (uf && uf->uf_val)
573 (*uf->uf_val)(uf->uf_index, sv);
591 #ifdef DYNAMIC_ENV_FETCH
592 /* We just undefd an environment var. Is a replacement */
593 /* waiting in the wings? */
596 if ((valp = hv_fetch(GvHVn(envgv), ptr, klen, FALSE)))
597 s = SvPV(*valp, len);
601 #if !defined(OS2) && !defined(AMIGAOS) && !defined(_WIN32)
602 /* And you'll never guess what the dog had */
603 /* in its mouth... */
605 MgTAINTEDDIR_off(mg);
607 if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) {
608 char pathbuf[256], eltbuf[256], *cp, *elt = s;
612 do { /* DCL$PATH may be a search list */
613 while (1) { /* as may dev portion of any element */
614 if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) {
615 if ( *(cp+1) == '.' || *(cp+1) == '-' ||
616 cando_by_name(S_IWUSR,0,elt) ) {
621 if ((cp = strchr(elt, ':')) != Nullch)
623 if (my_trnlnm(elt, eltbuf, j++))
629 } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf));
632 if (s && klen == 4 && strEQ(ptr,"PATH")) {
633 char *strend = s + len;
637 s = cpytill(tokenbuf, s, strend, ':', &i);
640 || (Stat(tokenbuf, &st) == 0 && (st.st_mode & 2)) ) {
647 #endif /* neither OS2 nor AMIGAOS nor _WIN32 */
653 magic_clearenv(sv,mg)
657 my_setenv(MgPV(mg,na),Nullch);
667 /* Are we fetching a signal entry? */
668 i = whichsig(MgPV(mg,na));
671 sv_setsv(sv,psig_ptr[i]);
673 Sighandler_t sigstate = rsignal_state(i);
675 /* cache state so we don't fetch it again */
676 if(sigstate == SIG_IGN)
677 sv_setpv(sv,"IGNORE");
679 sv_setsv(sv,&sv_undef);
680 psig_ptr[i] = SvREFCNT_inc(sv);
687 magic_clearsig(sv,mg)
692 /* Are we clearing a signal entry? */
693 i = whichsig(MgPV(mg,na));
696 SvREFCNT_dec(psig_ptr[i]);
700 SvREFCNT_dec(psig_name[i]);
718 if (strEQ(s,"__DIE__"))
720 else if (strEQ(s,"__WARN__"))
722 else if (strEQ(s,"__PARSE__"))
725 croak("No such hook: %s", s);
733 i = whichsig(s); /* ...no, a brick */
735 if (dowarn || strEQ(s,"ALARM"))
736 warn("No such signal: SIG%s", s);
739 SvREFCNT_dec(psig_name[i]);
740 SvREFCNT_dec(psig_ptr[i]);
741 psig_ptr[i] = SvREFCNT_inc(sv);
742 SvTEMP_off(sv); /* Make sure it doesn't go away on us */
743 psig_name[i] = newSVpv(s, strlen(s));
744 SvREADONLY_on(psig_name[i]);
746 if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) {
748 (void)rsignal(i, sighandler);
750 *svp = SvREFCNT_inc(sv);
753 s = SvPV_force(sv,na);
754 if (strEQ(s,"IGNORE")) {
756 (void)rsignal(i, SIG_IGN);
760 else if (strEQ(s,"DEFAULT") || !*s) {
762 (void)rsignal(i, SIG_DFL);
768 * We should warn if HINT_STRICT_REFS, but without
769 * access to a known hint bit in a known OP, we can't
770 * tell whether HINT_STRICT_REFS is in force or not.
772 if (!strchr(s,':') && !strchr(s,'\'')) {
773 sprintf(tokenbuf, "main::%s",s);
774 sv_setpv(sv,tokenbuf);
777 (void)rsignal(i, sighandler);
779 *svp = SvREFCNT_inc(sv);
796 magic_setamagic(sv,mg)
800 /* HV_badAMAGIC_on(Sv_STASH(sv)); */
805 #endif /* OVERLOAD */
808 magic_setnkeys(sv,mg)
813 hv_ksplit((HV*)LvTARG(sv), SvIV(sv));
814 LvTARG(sv) = Nullsv; /* Don't allow a ref to reassign this. */
820 magic_methpack(sv,mg,meth)
834 PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
835 else if (mg->mg_len == HEf_SVKEY)
836 PUSHs((SV*)mg->mg_ptr);
838 else if (mg->mg_type == 'p')
839 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
842 if (perl_call_method(meth, G_SCALAR))
843 sv_setsv(sv, *stack_sp--);
855 magic_methpack(sv,mg,"FETCH");
857 mg->mg_flags |= MGf_GSKIP;
873 PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
874 else if (mg->mg_len == HEf_SVKEY)
875 PUSHs((SV*)mg->mg_ptr);
877 else if (mg->mg_type == 'p')
878 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
882 perl_call_method("STORE", G_SCALAR|G_DISCARD);
888 magic_clearpack(sv,mg)
892 return magic_methpack(sv,mg,"DELETE");
895 int magic_wipepack(sv,mg)
905 perl_call_method("CLEAR", G_SCALAR|G_DISCARD);
911 magic_nextpack(sv,mg,key)
917 char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
928 if (perl_call_method(meth, G_SCALAR))
929 sv_setsv(key, *stack_sp--);
937 magic_existspack(sv,mg)
941 return magic_methpack(sv,mg,"EXISTS");
945 magic_setdbline(sv,mg)
956 svp = av_fetch(GvAV(gv),
957 atoi(MgPV(mg,na)), FALSE);
958 if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp)))
961 warn("Can't break at that line\n");
966 magic_getarylen(sv,mg)
970 sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + curcop->cop_arybase);
975 magic_setarylen(sv,mg)
979 av_fill((AV*)mg->mg_obj, SvIV(sv) - curcop->cop_arybase);
988 SV* lsv = LvTARG(sv);
990 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) {
991 mg = mg_find(lsv, 'g');
992 if (mg && mg->mg_len >= 0) {
993 sv_setiv(sv, mg->mg_len + curcop->cop_arybase);
1006 SV* lsv = LvTARG(sv);
1012 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv))
1013 mg = mg_find(lsv, 'g');
1017 sv_magic(lsv, (SV*)0, 'g', Nullch, 0);
1018 mg = mg_find(lsv, 'g');
1020 else if (!SvOK(sv)) {
1024 len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv);
1026 pos = SvIV(sv) - curcop->cop_arybase;
1035 mg->mg_flags &= ~MGf_MINMATCH;
1041 magic_getglob(sv,mg)
1045 if (SvFAKE(sv)) { /* FAKE globs can get coerced */
1047 gv_efullname3(sv,((GV*)sv), "*");
1051 gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */
1056 magic_setglob(sv,mg)
1066 if (*s == '*' && s[1])
1068 gv = gv_fetchpv(s,TRUE, SVt_PVGV);
1073 GvGP(sv) = gp_ref(GvGP(gv));
1078 magic_setsubstr(sv,mg)
1083 char *tmps = SvPV(sv,len);
1084 sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len);
1089 magic_gettaint(sv,mg)
1093 TAINT_IF((mg->mg_len & 1) ||
1094 (mg->mg_len & 2) && mg->mg_obj == sv); /* kludge */
1099 magic_settaint(sv,mg)
1104 if (localizing == 1)
1121 do_vecset(sv); /* XXX slurp this routine */
1126 magic_getdefelem(sv,mg)
1131 if (LvTARGLEN(sv)) {
1133 HV* hv = (HV*)LvTARG(sv);
1134 HE* he = hv_fetch_ent(hv, mg->mg_obj, FALSE, 0);
1139 AV* av = (AV*)LvTARG(sv);
1140 if ((I32)LvTARGOFF(sv) <= AvFILL(av))
1141 targ = AvARRAY(av)[LvTARGOFF(sv)];
1143 if (targ && targ != &sv_undef) {
1144 /* somebody else defined it for us */
1145 SvREFCNT_dec(LvTARG(sv));
1146 LvTARG(sv) = SvREFCNT_inc(targ);
1148 SvREFCNT_dec(mg->mg_obj);
1149 mg->mg_obj = Nullsv;
1150 mg->mg_flags &= ~MGf_REFCOUNTED;
1155 sv_setsv(sv, targ ? targ : &sv_undef);
1160 magic_setdefelem(sv,mg)
1167 sv_setsv(LvTARG(sv), sv);
1168 SvSETMAGIC(LvTARG(sv));
1174 magic_freedefelem(sv,mg)
1178 SvREFCNT_dec(LvTARG(sv));
1189 if (!LvTARGLEN(sv) || !(mg = mg_find(sv, 'y')))
1192 HV* hv = (HV*)LvTARG(sv);
1193 HE* he = hv_fetch_ent(hv, mg->mg_obj, TRUE, 0);
1194 if (!he || (value = HeVAL(he)) == &sv_undef)
1195 croak(no_helem, SvPV(mg->mg_obj, na));
1198 AV* av = (AV*)LvTARG(sv);
1199 if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av))
1200 LvTARG(sv) = Nullsv; /* array can't be extended */
1202 SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE);
1203 if (!svp || (value = *svp) == &sv_undef)
1204 croak(no_aelem, (I32)LvTARGOFF(sv));
1207 SvREFCNT_inc(value);
1208 SvREFCNT_dec(LvTARG(sv));
1211 SvREFCNT_dec(mg->mg_obj);
1212 mg->mg_obj = Nullsv;
1213 mg->mg_flags &= ~MGf_REFCOUNTED;
1217 magic_setmglob(sv,mg)
1231 sv_unmagic(sv, 'B');
1241 sv_unmagic(sv, 'f');
1247 magic_setuvar(sv,mg)
1251 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
1253 if (uf && uf->uf_set)
1254 (*uf->uf_set)(uf->uf_index, sv);
1258 #ifdef USE_LOCALE_COLLATE
1260 magic_setcollxfrm(sv,mg)
1265 * René Descartes said "I think not."
1266 * and vanished with a faint plop.
1269 Safefree(mg->mg_ptr);
1275 #endif /* USE_LOCALE_COLLATE */
1285 switch (*mg->mg_ptr) {
1286 case '\001': /* ^A */
1287 sv_setsv(bodytarget, sv);
1289 case '\004': /* ^D */
1290 debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000;
1291 DEBUG_x(dump_all());
1293 case '\005': /* ^E */
1295 set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1297 /* will anyone ever use this? */
1298 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4);
1301 case '\006': /* ^F */
1302 maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1304 case '\010': /* ^H */
1305 hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1311 inplace = savepv(SvPV(sv,na));
1315 case '\017': /* ^O */
1319 osname = savepv(SvPV(sv,na));
1323 case '\020': /* ^P */
1324 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1333 case '\024': /* ^T */
1335 basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv));
1337 basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1340 case '\027': /* ^W */
1341 dowarn = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1345 if (localizing == 1)
1346 save_sptr((SV**)&last_in_gv);
1348 else if (SvOK(sv) && GvIO(last_in_gv))
1349 IoLINES(GvIOp(last_in_gv)) = (long)SvIV(sv);
1352 Safefree(IoTOP_NAME(GvIOp(defoutgv)));
1353 IoTOP_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na));
1354 IoTOP_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1357 Safefree(IoFMT_NAME(GvIOp(defoutgv)));
1358 IoFMT_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na));
1359 IoFMT_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1362 IoPAGE_LEN(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1365 IoLINES_LEFT(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1366 if (IoLINES_LEFT(GvIOp(defoutgv)) < 0L)
1367 IoLINES_LEFT(GvIOp(defoutgv)) = 0L;
1370 IoPAGE(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1374 IO *io = GvIOp(defoutgv);
1375 if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0)
1376 IoFLAGS(io) &= ~IOf_FLUSH;
1378 if (!(IoFLAGS(io) & IOf_FLUSH)) {
1379 PerlIO *ofp = IoOFP(io);
1381 (void)PerlIO_flush(ofp);
1382 IoFLAGS(io) |= IOf_FLUSH;
1388 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1389 multiline = (i != 0);
1395 rs = SvREFCNT_inc(nrs);
1400 if (SvOK(sv) || SvGMAGICAL(sv))
1401 ors = savepv(SvPV(sv,orslen));
1410 ofs = savepv(SvPV(sv, ofslen));
1415 ofmt = savepv(SvPV(sv,na));
1418 compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1421 #ifdef COMPLEX_STATUS
1422 if (localizing == 2) {
1423 statusvalue = LvTARGOFF(sv);
1424 statusvalue_vms = LvTARGLEN(sv);
1428 #ifdef VMSISH_STATUS
1430 STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)));
1433 STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1436 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv),
1437 (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno);
1440 uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1442 delaymagic |= DM_RUID;
1443 break; /* don't do magic till later */
1446 (void)setruid((Uid_t)uid);
1449 (void)setreuid((Uid_t)uid, (Uid_t)-1);
1451 #ifdef HAS_SETRESUID
1452 (void)setresuid((Uid_t)uid, (Uid_t)-1, (Uid_t)-1);
1454 if (uid == euid) /* special case $< = $> */
1457 uid = (I32)getuid();
1458 croak("setruid() not implemented");
1463 uid = (I32)getuid();
1464 tainting |= (uid && (euid != uid || egid != gid));
1467 euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1469 delaymagic |= DM_EUID;
1470 break; /* don't do magic till later */
1473 (void)seteuid((Uid_t)euid);
1476 (void)setreuid((Uid_t)-1, (Uid_t)euid);
1478 #ifdef HAS_SETRESUID
1479 (void)setresuid((Uid_t)-1, (Uid_t)euid, (Uid_t)-1);
1481 if (euid == uid) /* special case $> = $< */
1484 euid = (I32)geteuid();
1485 croak("seteuid() not implemented");
1490 euid = (I32)geteuid();
1491 tainting |= (uid && (euid != uid || egid != gid));
1494 gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1496 delaymagic |= DM_RGID;
1497 break; /* don't do magic till later */
1500 (void)setrgid((Gid_t)gid);
1503 (void)setregid((Gid_t)gid, (Gid_t)-1);
1505 #ifdef HAS_SETRESGID
1506 (void)setresgid((Gid_t)gid, (Gid_t)-1, (Gid_t) 1);
1508 if (gid == egid) /* special case $( = $) */
1511 gid = (I32)getgid();
1512 croak("setrgid() not implemented");
1517 gid = (I32)getgid();
1518 tainting |= (uid && (euid != uid || egid != gid));
1521 #ifdef HAS_SETGROUPS
1523 char *p = SvPV(sv, na);
1524 Groups_t gary[NGROUPS];
1526 SET_NUMERIC_STANDARD();
1529 egid = I_V(atof(p));
1530 for (i = 0; i < NGROUPS; ++i) {
1531 while (*p && !isSPACE(*p))
1537 gary[i] = I_V(atof(p));
1540 (void)setgroups(i, gary);
1542 #else /* HAS_SETGROUPS */
1543 egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1544 #endif /* HAS_SETGROUPS */
1546 delaymagic |= DM_EGID;
1547 break; /* don't do magic till later */
1550 (void)setegid((Gid_t)egid);
1553 (void)setregid((Gid_t)-1, (Gid_t)egid);
1555 #ifdef HAS_SETRESGID
1556 (void)setresgid((Gid_t)-1, (Gid_t)egid, (Gid_t)-1);
1558 if (egid == gid) /* special case $) = $( */
1561 egid = (I32)getegid();
1562 croak("setegid() not implemented");
1567 egid = (I32)getegid();
1568 tainting |= (uid && (euid != uid || egid != gid));
1571 chopset = SvPV_force(sv,na);
1577 /* See if all the arguments are contiguous in memory */
1578 for (i = 1; i < origargc; i++) {
1579 if (origargv[i] == s + 1)
1580 s += strlen(++s); /* this one is ok too */
1582 /* can grab env area too? */
1583 if (origenviron && origenviron[0] == s + 1) {
1584 my_setenv("NoNeSuCh", Nullch);
1585 /* force copy of environment */
1586 for (i = 0; origenviron[i]; i++)
1587 if (origenviron[i] == s + 1)
1590 origalen = s - origargv[0];
1592 s = SvPV_force(sv,len);
1594 if (i >= origalen) {
1598 Copy(s, origargv[0], i, char);
1601 Copy(s, origargv[0], i, char);
1604 while (++i < origalen)
1607 for (i = 1; i < origargc; i++)
1608 origargv[i] = Nullch;
1619 register char **sigv;
1621 for (sigv = sig_name+1; *sigv; sigv++)
1622 if (strEQ(sig,*sigv))
1623 return sig_num[sigv - sig_name];
1625 if (strEQ(sig,"CHLD"))
1629 if (strEQ(sig,"CLD"))
1647 die("Signal SIG%s received, but no signal handler set.\n",
1650 cv = sv_2cv(psig_ptr[sig],&st,&gv,TRUE);
1651 if (!cv || !CvROOT(cv)) {
1653 warn("SIG%s handler \"%s\" not defined.\n",
1654 sig_name[sig], GvENAME(gv) );
1658 oldstack = curstack;
1659 if (curstack != signalstack)
1660 AvFILL(signalstack) = 0;
1661 SWITCHSTACK(curstack, signalstack);
1664 sv = SvREFCNT_inc(psig_name[sig]);
1666 sv = sv_newmortal();
1667 sv_setpv(sv,sig_name[sig]);
1673 perl_call_sv((SV*)cv, G_DISCARD);
1675 SWITCHSTACK(signalstack, oldstack);