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)));
459 sv_setiv(sv, (IV)STATUS_CURRENT);
460 #ifdef COMPLEX_STATUS
461 LvTARGOFF(sv) = statusvalue;
462 LvTARGLEN(sv) = statusvalue_vms;
467 s = IoTOP_NAME(GvIOp(defoutgv));
471 sv_setpv(sv,GvENAME(defoutgv));
476 s = IoFMT_NAME(GvIOp(defoutgv));
478 s = GvENAME(defoutgv);
483 sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(defoutgv)));
486 sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(defoutgv)));
489 sv_setiv(sv, (IV)IoPAGE(GvIOp(defoutgv)));
497 WITH_THR(sv_setiv(sv, (IV)curcop->cop_arybase));
500 sv_setiv(sv, (IV)(IoFLAGS(GvIOp(defoutgv)) & IOf_FLUSH) != 0 );
503 sv_setpvn(sv,ofs,ofslen);
506 sv_setpvn(sv,ors,orslen);
513 sv_setnv(sv, (double)((errno == EVMSERR) ? vaxc$errno : errno));
514 sv_setpv(sv, errno ? Strerror(errno) : "");
517 int saveerrno = errno;
518 sv_setnv(sv, (double)errno);
520 if (errno == errno_isOS2) sv_setpv(sv, os2error(Perl_rc));
523 sv_setpv(sv, errno ? Strerror(errno) : "");
527 SvNOK_on(sv); /* what a wonderful hack! */
530 sv_setiv(sv, (IV)uid);
533 sv_setiv(sv, (IV)euid);
536 sv_setiv(sv, (IV)gid);
537 sv_setpvf(sv, "%Vd", (IV)gid);
540 sv_setiv(sv, (IV)egid);
541 sv_setpvf(sv, "%Vd", (IV)egid);
545 Groups_t gary[NGROUPS];
546 i = getgroups(NGROUPS,gary);
548 sv_catpvf(sv, " %Vd", (IV)gary[i]);
551 SvIOK_on(sv); /* what a wonderful hack! */
562 magic_getuvar(sv, mg)
566 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
568 if (uf && uf->uf_val)
569 (*uf->uf_val)(uf->uf_index, sv);
587 #ifdef DYNAMIC_ENV_FETCH
588 /* We just undefd an environment var. Is a replacement */
589 /* waiting in the wings? */
592 if ((valp = hv_fetch(GvHVn(envgv), ptr, klen, FALSE)))
593 s = SvPV(*valp, len);
597 #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32)
598 /* And you'll never guess what the dog had */
599 /* in its mouth... */
601 MgTAINTEDDIR_off(mg);
603 if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) {
604 char pathbuf[256], eltbuf[256], *cp, *elt = s;
608 do { /* DCL$PATH may be a search list */
609 while (1) { /* as may dev portion of any element */
610 if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) {
611 if ( *(cp+1) == '.' || *(cp+1) == '-' ||
612 cando_by_name(S_IWUSR,0,elt) ) {
617 if ((cp = strchr(elt, ':')) != Nullch)
619 if (my_trnlnm(elt, eltbuf, j++))
625 } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf));
628 if (s && klen == 4 && strEQ(ptr,"PATH")) {
629 char *strend = s + len;
633 s = delimcpy(tokenbuf, tokenbuf + sizeof tokenbuf,
636 if (i >= sizeof tokenbuf /* too long -- assume the worst */
638 || (Stat(tokenbuf, &st) == 0 && (st.st_mode & 2)) ) {
645 #endif /* neither OS2 nor AMIGAOS nor WIN32 */
651 magic_clearenv(sv,mg)
655 my_setenv(MgPV(mg,na),Nullch);
660 magic_clear_all_env(sv,mg)
665 die("Can't make list assignment to %%ENV on this system");
668 char *envv = GetEnvironmentStrings();
672 char *end = strchr(cur,'=');
673 if (end && end != cur) {
675 my_setenv(cur,Nullch);
677 cur += strlen(end+1)+1;
679 else if ((len = strlen(cur)))
682 FreeEnvironmentStrings(envv);
686 if (environ == origenviron)
687 New(901, environ, 1, char*);
689 for (i = 0; environ[i]; i++)
690 Safefree(environ[i]);
704 /* Are we fetching a signal entry? */
705 i = whichsig(MgPV(mg,na));
708 sv_setsv(sv,psig_ptr[i]);
710 dTHR; /* just for SvREFCNT_inc */
711 Sighandler_t sigstate = rsignal_state(i);
713 /* cache state so we don't fetch it again */
714 if(sigstate == SIG_IGN)
715 sv_setpv(sv,"IGNORE");
717 sv_setsv(sv,&sv_undef);
718 psig_ptr[i] = SvREFCNT_inc(sv);
725 magic_clearsig(sv,mg)
730 /* Are we clearing a signal entry? */
731 i = whichsig(MgPV(mg,na));
734 SvREFCNT_dec(psig_ptr[i]);
738 SvREFCNT_dec(psig_name[i]);
757 if (strEQ(s,"__DIE__"))
759 else if (strEQ(s,"__WARN__"))
761 else if (strEQ(s,"__PARSE__"))
764 croak("No such hook: %s", s);
772 i = whichsig(s); /* ...no, a brick */
774 if (dowarn || strEQ(s,"ALARM"))
775 warn("No such signal: SIG%s", s);
778 SvREFCNT_dec(psig_name[i]);
779 SvREFCNT_dec(psig_ptr[i]);
780 psig_ptr[i] = SvREFCNT_inc(sv);
781 SvTEMP_off(sv); /* Make sure it doesn't go away on us */
782 psig_name[i] = newSVpv(s, strlen(s));
783 SvREADONLY_on(psig_name[i]);
785 if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) {
787 (void)rsignal(i, sighandlerp);
789 *svp = SvREFCNT_inc(sv);
792 s = SvPV_force(sv,na);
793 if (strEQ(s,"IGNORE")) {
795 (void)rsignal(i, SIG_IGN);
799 else if (strEQ(s,"DEFAULT") || !*s) {
801 (void)rsignal(i, SIG_DFL);
807 * We should warn if HINT_STRICT_REFS, but without
808 * access to a known hint bit in a known OP, we can't
809 * tell whether HINT_STRICT_REFS is in force or not.
811 if (!strchr(s,':') && !strchr(s,'\''))
812 sv_setpv(sv, form("main::%s", s));
814 (void)rsignal(i, sighandlerp);
816 *svp = SvREFCNT_inc(sv);
833 magic_setamagic(sv,mg)
837 /* HV_badAMAGIC_on(Sv_STASH(sv)); */
842 #endif /* OVERLOAD */
845 magic_setnkeys(sv,mg)
850 hv_ksplit((HV*)LvTARG(sv), SvIV(sv));
851 LvTARG(sv) = Nullsv; /* Don't allow a ref to reassign this. */
857 magic_methpack(sv,mg,meth)
872 PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
873 else if (mg->mg_len == HEf_SVKEY)
874 PUSHs((SV*)mg->mg_ptr);
876 else if (mg->mg_type == 'p')
877 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
880 if (perl_call_method(meth, G_SCALAR))
881 sv_setsv(sv, *stack_sp--);
893 magic_methpack(sv,mg,"FETCH");
895 mg->mg_flags |= MGf_GSKIP;
912 PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
913 else if (mg->mg_len == HEf_SVKEY)
914 PUSHs((SV*)mg->mg_ptr);
916 else if (mg->mg_type == 'p')
917 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
921 perl_call_method("STORE", G_SCALAR|G_DISCARD);
927 magic_clearpack(sv,mg)
931 return magic_methpack(sv,mg,"DELETE");
934 int magic_wipepack(sv,mg)
945 perl_call_method("CLEAR", G_SCALAR|G_DISCARD);
951 magic_nextpack(sv,mg,key)
958 char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
969 if (perl_call_method(meth, G_SCALAR))
970 sv_setsv(key, *stack_sp--);
978 magic_existspack(sv,mg)
982 return magic_methpack(sv,mg,"EXISTS");
986 magic_setdbline(sv,mg)
998 svp = av_fetch(GvAV(gv),
999 atoi(MgPV(mg,na)), FALSE);
1000 if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp)))
1003 warn("Can't break at that line\n");
1008 magic_getarylen(sv,mg)
1013 sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + curcop->cop_arybase);
1018 magic_setarylen(sv,mg)
1023 av_fill((AV*)mg->mg_obj, SvIV(sv) - curcop->cop_arybase);
1032 SV* lsv = LvTARG(sv);
1034 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) {
1035 mg = mg_find(lsv, 'g');
1036 if (mg && mg->mg_len >= 0) {
1038 sv_setiv(sv, mg->mg_len + curcop->cop_arybase);
1051 SV* lsv = LvTARG(sv);
1057 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv))
1058 mg = mg_find(lsv, 'g');
1062 sv_magic(lsv, (SV*)0, 'g', Nullch, 0);
1063 mg = mg_find(lsv, 'g');
1065 else if (!SvOK(sv)) {
1069 len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv);
1071 WITH_THR(pos = SvIV(sv) - curcop->cop_arybase);
1080 mg->mg_flags &= ~MGf_MINMATCH;
1086 magic_getglob(sv,mg)
1090 if (SvFAKE(sv)) { /* FAKE globs can get coerced */
1092 gv_efullname3(sv,((GV*)sv), "*");
1096 gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */
1101 magic_setglob(sv,mg)
1111 if (*s == '*' && s[1])
1113 gv = gv_fetchpv(s,TRUE, SVt_PVGV);
1118 GvGP(sv) = gp_ref(GvGP(gv));
1123 magic_setsubstr(sv,mg)
1128 char *tmps = SvPV(sv,len);
1129 sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len);
1134 magic_gettaint(sv,mg)
1138 TAINT_IF((mg->mg_len & 1) ||
1139 (mg->mg_len & 2) && mg->mg_obj == sv); /* kludge */
1144 magic_settaint(sv,mg)
1150 if (localizing == 1)
1167 do_vecset(sv); /* XXX slurp this routine */
1172 magic_getdefelem(sv,mg)
1177 if (LvTARGLEN(sv)) {
1179 HV* hv = (HV*)LvTARG(sv);
1180 HE* he = hv_fetch_ent(hv, mg->mg_obj, FALSE, 0);
1185 AV* av = (AV*)LvTARG(sv);
1186 if ((I32)LvTARGOFF(sv) <= AvFILL(av))
1187 targ = AvARRAY(av)[LvTARGOFF(sv)];
1189 if (targ && targ != &sv_undef) {
1190 dTHR; /* just for SvREFCNT_dec */
1191 /* somebody else defined it for us */
1192 SvREFCNT_dec(LvTARG(sv));
1193 LvTARG(sv) = SvREFCNT_inc(targ);
1195 SvREFCNT_dec(mg->mg_obj);
1196 mg->mg_obj = Nullsv;
1197 mg->mg_flags &= ~MGf_REFCOUNTED;
1202 sv_setsv(sv, targ ? targ : &sv_undef);
1207 magic_setdefelem(sv,mg)
1214 sv_setsv(LvTARG(sv), sv);
1215 SvSETMAGIC(LvTARG(sv));
1221 magic_freedefelem(sv,mg)
1225 SvREFCNT_dec(LvTARG(sv));
1233 dTHR; /* just for SvREFCNT_inc and SvREFCNT_dec*/
1237 if (!LvTARGLEN(sv) || !(mg = mg_find(sv, 'y')))
1240 HV* hv = (HV*)LvTARG(sv);
1241 HE* he = hv_fetch_ent(hv, mg->mg_obj, TRUE, 0);
1242 if (!he || (value = HeVAL(he)) == &sv_undef)
1243 croak(no_helem, SvPV(mg->mg_obj, na));
1246 AV* av = (AV*)LvTARG(sv);
1247 if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av))
1248 LvTARG(sv) = Nullsv; /* array can't be extended */
1250 SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE);
1251 if (!svp || (value = *svp) == &sv_undef)
1252 croak(no_aelem, (I32)LvTARGOFF(sv));
1255 (void)SvREFCNT_inc(value);
1256 SvREFCNT_dec(LvTARG(sv));
1259 SvREFCNT_dec(mg->mg_obj);
1260 mg->mg_obj = Nullsv;
1261 mg->mg_flags &= ~MGf_REFCOUNTED;
1265 magic_setmglob(sv,mg)
1279 sv_unmagic(sv, 'B');
1289 sv_unmagic(sv, 'f');
1295 magic_setuvar(sv,mg)
1299 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
1301 if (uf && uf->uf_set)
1302 (*uf->uf_set)(uf->uf_index, sv);
1306 #ifdef USE_LOCALE_COLLATE
1308 magic_setcollxfrm(sv,mg)
1313 * René Descartes said "I think not."
1314 * and vanished with a faint plop.
1317 Safefree(mg->mg_ptr);
1323 #endif /* USE_LOCALE_COLLATE */
1334 switch (*mg->mg_ptr) {
1335 case '\001': /* ^A */
1336 sv_setsv(bodytarget, sv);
1338 case '\004': /* ^D */
1339 debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000;
1340 DEBUG_x(dump_all());
1342 case '\005': /* ^E */
1344 set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1346 /* will anyone ever use this? */
1347 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4);
1350 case '\006': /* ^F */
1351 maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1353 case '\010': /* ^H */
1354 hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1360 inplace = savepv(SvPV(sv,na));
1364 case '\017': /* ^O */
1368 osname = savepv(SvPV(sv,na));
1372 case '\020': /* ^P */
1373 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1382 case '\024': /* ^T */
1384 basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv));
1386 basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1389 case '\027': /* ^W */
1390 dowarn = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1394 if (localizing == 1)
1395 save_sptr((SV**)&last_in_gv);
1397 else if (SvOK(sv) && GvIO(last_in_gv))
1398 IoLINES(GvIOp(last_in_gv)) = (long)SvIV(sv);
1401 Safefree(IoTOP_NAME(GvIOp(defoutgv)));
1402 IoTOP_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na));
1403 IoTOP_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1406 Safefree(IoFMT_NAME(GvIOp(defoutgv)));
1407 IoFMT_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na));
1408 IoFMT_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1411 IoPAGE_LEN(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1414 IoLINES_LEFT(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1415 if (IoLINES_LEFT(GvIOp(defoutgv)) < 0L)
1416 IoLINES_LEFT(GvIOp(defoutgv)) = 0L;
1419 IoPAGE(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1423 IO *io = GvIOp(defoutgv);
1424 if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0)
1425 IoFLAGS(io) &= ~IOf_FLUSH;
1427 if (!(IoFLAGS(io) & IOf_FLUSH)) {
1428 PerlIO *ofp = IoOFP(io);
1430 (void)PerlIO_flush(ofp);
1431 IoFLAGS(io) |= IOf_FLUSH;
1437 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1438 multiline = (i != 0);
1444 rs = SvREFCNT_inc(nrs);
1449 if (SvOK(sv) || SvGMAGICAL(sv))
1450 ors = savepv(SvPV(sv,orslen));
1459 ofs = savepv(SvPV(sv, ofslen));
1464 ofmt = savepv(SvPV(sv,na));
1467 compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1470 #ifdef COMPLEX_STATUS
1471 if (localizing == 2) {
1472 statusvalue = LvTARGOFF(sv);
1473 statusvalue_vms = LvTARGLEN(sv);
1477 #ifdef VMSISH_STATUS
1479 STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)));
1482 STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1485 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv),
1486 (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno);
1489 uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1491 delaymagic |= DM_RUID;
1492 break; /* don't do magic till later */
1495 (void)setruid((Uid_t)uid);
1498 (void)setreuid((Uid_t)uid, (Uid_t)-1);
1500 #ifdef HAS_SETRESUID
1501 (void)setresuid((Uid_t)uid, (Uid_t)-1, (Uid_t)-1);
1503 if (uid == euid) /* special case $< = $> */
1506 uid = (I32)getuid();
1507 croak("setruid() not implemented");
1512 uid = (I32)getuid();
1513 tainting |= (uid && (euid != uid || egid != gid));
1516 euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1518 delaymagic |= DM_EUID;
1519 break; /* don't do magic till later */
1522 (void)seteuid((Uid_t)euid);
1525 (void)setreuid((Uid_t)-1, (Uid_t)euid);
1527 #ifdef HAS_SETRESUID
1528 (void)setresuid((Uid_t)-1, (Uid_t)euid, (Uid_t)-1);
1530 if (euid == uid) /* special case $> = $< */
1533 euid = (I32)geteuid();
1534 croak("seteuid() not implemented");
1539 euid = (I32)geteuid();
1540 tainting |= (uid && (euid != uid || egid != gid));
1543 gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1545 delaymagic |= DM_RGID;
1546 break; /* don't do magic till later */
1549 (void)setrgid((Gid_t)gid);
1552 (void)setregid((Gid_t)gid, (Gid_t)-1);
1554 #ifdef HAS_SETRESGID
1555 (void)setresgid((Gid_t)gid, (Gid_t)-1, (Gid_t) 1);
1557 if (gid == egid) /* special case $( = $) */
1560 gid = (I32)getgid();
1561 croak("setrgid() not implemented");
1566 gid = (I32)getgid();
1567 tainting |= (uid && (euid != uid || egid != gid));
1570 #ifdef HAS_SETGROUPS
1572 char *p = SvPV(sv, na);
1573 Groups_t gary[NGROUPS];
1575 SET_NUMERIC_STANDARD();
1578 egid = I_V(atof(p));
1579 for (i = 0; i < NGROUPS; ++i) {
1580 while (*p && !isSPACE(*p))
1586 gary[i] = I_V(atof(p));
1589 (void)setgroups(i, gary);
1591 #else /* HAS_SETGROUPS */
1592 egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1593 #endif /* HAS_SETGROUPS */
1595 delaymagic |= DM_EGID;
1596 break; /* don't do magic till later */
1599 (void)setegid((Gid_t)egid);
1602 (void)setregid((Gid_t)-1, (Gid_t)egid);
1604 #ifdef HAS_SETRESGID
1605 (void)setresgid((Gid_t)-1, (Gid_t)egid, (Gid_t)-1);
1607 if (egid == gid) /* special case $) = $( */
1610 egid = (I32)getegid();
1611 croak("setegid() not implemented");
1616 egid = (I32)getegid();
1617 tainting |= (uid && (euid != uid || egid != gid));
1620 chopset = SvPV_force(sv,na);
1626 /* See if all the arguments are contiguous in memory */
1627 for (i = 1; i < origargc; i++) {
1628 if (origargv[i] == s + 1)
1629 s += strlen(++s); /* this one is ok too */
1631 /* can grab env area too? */
1632 if (origenviron && origenviron[0] == s + 1) {
1633 my_setenv("NoNe SuCh", Nullch);
1634 /* force copy of environment */
1635 for (i = 0; origenviron[i]; i++)
1636 if (origenviron[i] == s + 1)
1639 origalen = s - origargv[0];
1641 s = SvPV_force(sv,len);
1643 if (i >= origalen) {
1647 Copy(s, origargv[0], i, char);
1650 Copy(s, origargv[0], i, char);
1653 while (++i < origalen)
1656 for (i = 1; i < origargc; i++)
1657 origargv[i] = Nullch;
1666 magic_mutexfree(sv, mg)
1671 DEBUG_L(PerlIO_printf(PerlIO_stderr(), "0x%lx: magic_mutexfree 0x%lx\n",
1672 (unsigned long)thr, (unsigned long)sv);)
1674 croak("panic: magic_mutexfree");
1675 MUTEX_DESTROY(MgMUTEXP(mg));
1676 COND_DESTROY(MgCONDP(mg));
1679 #endif /* USE_THREADS */
1685 register char **sigv;
1687 for (sigv = sig_name+1; *sigv; sigv++)
1688 if (strEQ(sig,*sigv))
1689 return sig_num[sigv - sig_name];
1691 if (strEQ(sig,"CHLD"))
1695 if (strEQ(sig,"CLD"))
1714 die("Signal SIG%s received, but no signal handler set.\n",
1717 cv = sv_2cv(psig_ptr[sig],&st,&gv,TRUE);
1718 if (!cv || !CvROOT(cv)) {
1720 warn("SIG%s handler \"%s\" not defined.\n",
1721 sig_name[sig], GvENAME(gv) );
1725 oldstack = curstack;
1726 if (curstack != signalstack)
1727 AvFILL(signalstack) = 0;
1728 SWITCHSTACK(curstack, signalstack);
1731 sv = SvREFCNT_inc(psig_name[sig]);
1733 sv = sv_newmortal();
1734 sv_setpv(sv,sig_name[sig]);
1740 perl_call_sv((SV*)cv, G_DISCARD);
1742 SWITCHSTACK(signalstack, oldstack);