3 * Copyright (c) 1991-1994, 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. */
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]))
291 if (curpm && (rx = curpm->op_pmregexp)) {
292 paren = rx->lastparen;
299 if (curpm && (rx = curpm->op_pmregexp)) {
300 if ((s = rx->subbeg) && rx->startp[0]) {
301 i = rx->startp[0] - s;
308 if (curpm && (rx = curpm->op_pmregexp)) {
309 if (rx->subend && (s = rx->endp[0])) {
317 return (STRLEN)ofslen;
319 return (STRLEN)orslen;
322 if (!SvPOK(sv) && SvNIOK(sv))
340 switch (*mg->mg_ptr) {
341 case '\001': /* ^A */
342 sv_setsv(sv, bodytarget);
344 case '\004': /* ^D */
345 sv_setiv(sv, (IV)(debug & 32767));
347 case '\005': /* ^E */
350 # include <descrip.h>
351 # include <starlet.h>
353 $DESCRIPTOR(msgdsc,msg);
354 sv_setnv(sv,(double) vaxc$errno);
355 if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1)
356 sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length);
362 sv_setnv(sv, (double)Perl_rc);
363 sv_setpv(sv, os2error(Perl_rc));
365 sv_setnv(sv, (double)errno);
366 sv_setpv(sv, errno ? Strerror(errno) : "");
369 SvNOK_on(sv); /* what a wonderful hack! */
371 case '\006': /* ^F */
372 sv_setiv(sv, (IV)maxsysfd);
374 case '\010': /* ^H */
375 sv_setiv(sv, (IV)hints);
379 sv_setpv(sv, inplace);
381 sv_setsv(sv, &sv_undef);
383 case '\017': /* ^O */
384 sv_setpv(sv, osname);
386 case '\020': /* ^P */
387 sv_setiv(sv, (IV)perldb);
389 case '\023': /* ^S */
390 if (STATUS_NATIVE == -1)
391 sv_setiv(sv, (IV)-1);
393 sv_setuv(sv, (UV)STATUS_NATIVE);
395 case '\024': /* ^T */
397 sv_setnv(sv, basetime);
399 sv_setiv(sv, (IV)basetime);
402 case '\027': /* ^W */
403 sv_setiv(sv, (IV)dowarn);
405 case '1': case '2': case '3': case '4':
406 case '5': case '6': case '7': case '8': case '9': case '&':
407 if (curpm && (rx = curpm->op_pmregexp)) {
408 paren = atoi(GvENAME((GV*)mg->mg_obj));
410 if (paren <= rx->nparens &&
411 (s = rx->startp[paren]) &&
412 (t = rx->endp[paren]))
419 was_tainted = tainted;
424 tainted = was_tainted || rx->exec_tainted;
429 sv_setsv(sv,&sv_undef);
432 if (curpm && (rx = curpm->op_pmregexp)) {
433 paren = rx->lastparen;
437 sv_setsv(sv,&sv_undef);
440 if (curpm && (rx = curpm->op_pmregexp)) {
441 if ((s = rx->subbeg) && rx->startp[0]) {
442 i = rx->startp[0] - s;
446 sv_setsv(sv,&sv_undef);
449 if (curpm && (rx = curpm->op_pmregexp)) {
450 if (rx->subend && (s = rx->endp[0])) {
455 sv_setsv(sv,&sv_undef);
459 if (GvIO(last_in_gv)) {
460 sv_setiv(sv, (IV)IoLINES(GvIO(last_in_gv)));
465 if (STATUS_POSIX == -1)
466 sv_setiv(sv, (IV)-1);
468 sv_setuv(sv, (UV)STATUS_POSIX);
471 s = IoTOP_NAME(GvIOp(defoutgv));
475 sv_setpv(sv,GvENAME(defoutgv));
480 s = IoFMT_NAME(GvIOp(defoutgv));
482 s = GvENAME(defoutgv);
487 sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(defoutgv)));
490 sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(defoutgv)));
493 sv_setiv(sv, (IV)IoPAGE(GvIOp(defoutgv)));
501 sv_setiv(sv, (IV)curcop->cop_arybase);
504 sv_setiv(sv, (IV)(IoFLAGS(GvIOp(defoutgv)) & IOf_FLUSH) != 0 );
507 sv_setpvn(sv,ofs,ofslen);
510 sv_setpvn(sv,ors,orslen);
517 sv_setnv(sv, (double)((errno == EVMSERR) ? vaxc$errno : errno));
518 sv_setpv(sv, errno ? Strerror(errno) : "");
521 int saveerrno = errno;
522 sv_setnv(sv, (double)errno);
524 if (errno == errno_isOS2) sv_setpv(sv, os2error(Perl_rc));
527 sv_setpv(sv, errno ? Strerror(errno) : "");
531 SvNOK_on(sv); /* what a wonderful hack! */
534 sv_setiv(sv, (IV)uid);
537 sv_setiv(sv, (IV)euid);
540 sv_setiv(sv, (IV)gid);
542 (void)sprintf(s,"%d",(int)gid);
545 sv_setiv(sv, (IV)egid);
547 (void)sprintf(s,"%d",(int)egid);
552 Groups_t gary[NGROUPS];
554 i = getgroups(NGROUPS,gary);
556 (void)sprintf(s," %d", (int)gary[i]);
562 SvIOK_on(sv); /* what a wonderful hack! */
573 magic_getuvar(sv, mg)
577 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
579 if (uf && uf->uf_val)
580 (*uf->uf_val)(uf->uf_index, sv);
596 #ifdef DYNAMIC_ENV_FETCH
597 /* We just undefd an environment var. Is a replacement */
598 /* waiting in the wings? */
602 if (mg->mg_len == HEf_SVKEY) keysv = (SV *)mg->mg_ptr;
603 else keysv = newSVpv(mg->mg_ptr,mg->mg_len);
604 if (envhe = hv_fetch_ent(GvHVn(envgv),keysv,FALSE,0))
605 s = SvPV(HeVAL(envhe),len);
606 if (mg->mg_len != HEf_SVKEY) SvREFCNT_dec(keysv);
609 /* And you'll never guess what the dog had */
610 /* in its mouth... */
612 if (s && strEQ(ptr,"PATH")) {
613 char *strend = s + len;
616 s = cpytill(tokenbuf,s,strend,':',&i);
619 || (Stat(tokenbuf,&statbuf) && (statbuf.st_mode & 2)) )
628 magic_clearenv(sv,mg)
632 my_setenv(MgPV(mg),Nullch);
642 /* Are we fetching a signal entry? */
643 i = whichsig(MgPV(mg));
646 sv_setsv(sv,psig_ptr[i]);
648 Sighandler_t sigstate = rsignal_state(i);
650 /* cache state so we don't fetch it again */
651 if(sigstate == SIG_IGN)
652 sv_setpv(sv,"IGNORE");
654 sv_setsv(sv,&sv_undef);
655 psig_ptr[i] = SvREFCNT_inc(sv);
662 magic_clearsig(sv,mg)
667 /* Are we clearing a signal entry? */
668 i = whichsig(MgPV(mg));
671 SvREFCNT_dec(psig_ptr[i]);
675 SvREFCNT_dec(psig_name[i]);
693 if (strEQ(s,"__DIE__"))
695 else if (strEQ(s,"__WARN__"))
697 else if (strEQ(s,"__PARSE__"))
700 croak("No such hook: %s", s);
708 i = whichsig(s); /* ...no, a brick */
710 if (dowarn || strEQ(s,"ALARM"))
711 warn("No such signal: SIG%s", s);
715 SvREFCNT_dec(psig_ptr[i]);
716 psig_ptr[i] = SvREFCNT_inc(sv);
718 SvREFCNT_dec(psig_name[i]);
719 psig_name[i] = newSVpv(s,strlen(s));
720 SvTEMP_off(sv); /* Make sure it doesn't go away on us */
721 SvREADONLY_on(psig_name[i]);
723 if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) {
725 (void)rsignal(i, sighandler);
727 *svp = SvREFCNT_inc(sv);
730 s = SvPV_force(sv,na);
731 if (strEQ(s,"IGNORE")) {
733 (void)rsignal(i, SIG_IGN);
737 else if (strEQ(s,"DEFAULT") || !*s) {
739 (void)rsignal(i, SIG_DFL);
744 if(hints & HINT_STRICT_REFS)
745 die(no_symref,s,"a subroutine");
746 if (!strchr(s,':') && !strchr(s,'\'')) {
747 sprintf(tokenbuf, "main::%s",s);
748 sv_setpv(sv,tokenbuf);
751 (void)rsignal(i, sighandler);
753 *svp = SvREFCNT_inc(sv);
770 magic_setamagic(sv,mg)
774 /* HV_badAMAGIC_on(Sv_STASH(sv)); */
779 #endif /* OVERLOAD */
782 magic_setnkeys(sv,mg)
787 hv_ksplit((HV*)LvTARG(sv), SvIV(sv));
788 LvTARG(sv) = Nullsv; /* Don't allow a ref to reassign this. */
794 magic_methpack(sv,mg,meth)
808 PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
809 else if (mg->mg_len == HEf_SVKEY)
810 PUSHs((SV*)mg->mg_ptr);
812 else if (mg->mg_type == 'p')
813 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
816 if (perl_call_method(meth, G_SCALAR))
817 sv_setsv(sv, *stack_sp--);
829 magic_methpack(sv,mg,"FETCH");
831 mg->mg_flags |= MGf_GSKIP;
847 PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
848 else if (mg->mg_len == HEf_SVKEY)
849 PUSHs((SV*)mg->mg_ptr);
851 else if (mg->mg_type == 'p')
852 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
856 perl_call_method("STORE", G_SCALAR|G_DISCARD);
862 magic_clearpack(sv,mg)
866 return magic_methpack(sv,mg,"DELETE");
869 int magic_wipepack(sv,mg)
879 perl_call_method("CLEAR", G_SCALAR|G_DISCARD);
885 magic_nextpack(sv,mg,key)
891 char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
902 if (perl_call_method(meth, G_SCALAR))
903 sv_setsv(key, *stack_sp--);
911 magic_existspack(sv,mg)
915 return magic_methpack(sv,mg,"EXISTS");
919 magic_setdbline(sv,mg)
930 svp = av_fetch(GvAV(gv),
931 atoi(MgPV(mg)), FALSE);
932 if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp)))
935 warn("Can't break at that line\n");
940 magic_getarylen(sv,mg)
944 sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + curcop->cop_arybase);
949 magic_setarylen(sv,mg)
953 av_fill((AV*)mg->mg_obj, SvIV(sv) - curcop->cop_arybase);
962 SV* lsv = LvTARG(sv);
964 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) {
965 mg = mg_find(lsv, 'g');
966 if (mg && mg->mg_len >= 0) {
967 sv_setiv(sv, mg->mg_len + curcop->cop_arybase);
980 SV* lsv = LvTARG(sv);
986 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv))
987 mg = mg_find(lsv, 'g');
991 sv_magic(lsv, (SV*)0, 'g', Nullch, 0);
992 mg = mg_find(lsv, 'g');
994 else if (!SvOK(sv)) {
998 len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv);
1000 pos = SvIV(sv) - curcop->cop_arybase;
1009 mg->mg_flags &= ~MGf_MINMATCH;
1015 magic_getglob(sv,mg)
1019 if (SvFAKE(sv)) { /* FAKE globs can get coerced */
1021 gv_efullname3(sv,((GV*)sv), "*");
1025 gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */
1030 magic_setglob(sv,mg)
1040 if (*s == '*' && s[1])
1042 gv = gv_fetchpv(s,TRUE, SVt_PVGV);
1047 GvGP(sv) = gp_ref(GvGP(gv));
1052 magic_setsubstr(sv,mg)
1057 char *tmps = SvPV(sv,len);
1058 sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len);
1063 magic_gettaint(sv,mg)
1067 TAINT_IF((mg->mg_len & 1) ||
1068 (mg->mg_len & 2) && mg->mg_obj == sv); /* kludge */
1073 magic_settaint(sv,mg)
1078 if (localizing == 1)
1095 do_vecset(sv); /* XXX slurp this routine */
1100 magic_getitervar(sv,mg)
1105 if (LvTARGLEN(sv)) {
1106 AV* av = (AV*)LvTARG(sv);
1107 if (LvTARGOFF(sv) <= AvFILL(av))
1108 targ = AvARRAY(av)[LvTARGOFF(sv)];
1112 sv_setsv(sv, targ ? targ : &sv_undef);
1117 magic_setitervar(sv,mg)
1124 sv_setsv(LvTARG(sv), sv);
1129 magic_freeitervar(sv,mg)
1133 SvREFCNT_dec(LvTARG(sv));
1145 av = (AV*)LvTARG(sv);
1146 if (LvTARGOFF(sv) <= AvFILL(av)) {
1147 SV** svp = AvARRAY(av) + LvTARGOFF(sv);
1148 LvTARG(sv) = newSVsv(*svp);
1150 *svp = SvREFCNT_inc(LvTARG(sv));
1153 LvTARG(sv) = Nullsv;
1159 magic_setmglob(sv,mg)
1173 sv_unmagic(sv, 'B');
1183 sv_unmagic(sv, 'f');
1189 magic_setuvar(sv,mg)
1193 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
1195 if (uf && uf->uf_set)
1196 (*uf->uf_set)(uf->uf_index, sv);
1200 #ifdef USE_LOCALE_COLLATE
1202 magic_setcollxfrm(sv,mg)
1207 * René Descartes said "I think not."
1208 * and vanished with a faint plop.
1211 Safefree(mg->mg_ptr);
1217 #endif /* USE_LOCALE_COLLATE */
1227 switch (*mg->mg_ptr) {
1228 case '\001': /* ^A */
1229 sv_setsv(bodytarget, sv);
1231 case '\004': /* ^D */
1232 debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000;
1233 DEBUG_x(dump_all());
1235 case '\005': /* ^E */
1237 set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1239 /* will anyone ever use this? */
1240 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4);
1243 case '\006': /* ^F */
1244 maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1246 case '\010': /* ^H */
1247 hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1253 inplace = savepv(SvPV(sv,na));
1257 case '\017': /* ^O */
1261 osname = savepv(SvPV(sv,na));
1265 case '\020': /* ^P */
1266 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1275 case '\023': /* ^S */
1276 STATUS_NATIVE_SET(SvIOK(sv) ? SvUVX(sv) : sv_2uv(sv));
1278 case '\024': /* ^T */
1280 basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv));
1282 basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1285 case '\027': /* ^W */
1286 dowarn = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1290 if (localizing == 1)
1291 save_sptr((SV**)&last_in_gv);
1293 else if (SvOK(sv) && GvIO(last_in_gv))
1294 IoLINES(GvIOp(last_in_gv)) = (long)SvIV(sv);
1297 Safefree(IoTOP_NAME(GvIOp(defoutgv)));
1298 IoTOP_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na));
1299 IoTOP_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1302 Safefree(IoFMT_NAME(GvIOp(defoutgv)));
1303 IoFMT_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na));
1304 IoFMT_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1307 IoPAGE_LEN(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1310 IoLINES_LEFT(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1311 if (IoLINES_LEFT(GvIOp(defoutgv)) < 0L)
1312 IoLINES_LEFT(GvIOp(defoutgv)) = 0L;
1315 IoPAGE(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1318 IoFLAGS(GvIOp(defoutgv)) &= ~IOf_FLUSH;
1319 if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) != 0) {
1320 IoFLAGS(GvIOp(defoutgv)) |= IOf_FLUSH;
1324 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1325 multiline = (i != 0);
1331 rs = SvREFCNT_inc(nrs);
1336 if (SvOK(sv) || SvGMAGICAL(sv))
1337 ors = savepv(SvPV(sv,orslen));
1346 ofs = savepv(SvPV(sv, ofslen));
1351 ofmt = savepv(SvPV(sv,na));
1354 compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1357 STATUS_POSIX_SET(SvIOK(sv) ? SvUVX(sv) : sv_2uv(sv));
1360 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv),
1361 (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno);
1364 uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1366 delaymagic |= DM_RUID;
1367 break; /* don't do magic till later */
1370 (void)setruid((Uid_t)uid);
1373 (void)setreuid((Uid_t)uid, (Uid_t)-1);
1375 #ifdef HAS_SETRESUID
1376 (void)setresuid((Uid_t)uid, (Uid_t)-1, (Uid_t)-1);
1378 if (uid == euid) /* special case $< = $> */
1381 uid = (I32)getuid();
1382 croak("setruid() not implemented");
1387 uid = (I32)getuid();
1388 tainting |= (uid && (euid != uid || egid != gid));
1391 euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1393 delaymagic |= DM_EUID;
1394 break; /* don't do magic till later */
1397 (void)seteuid((Uid_t)euid);
1400 (void)setreuid((Uid_t)-1, (Uid_t)euid);
1402 #ifdef HAS_SETRESUID
1403 (void)setresuid((Uid_t)-1, (Uid_t)euid, (Uid_t)-1);
1405 if (euid == uid) /* special case $> = $< */
1408 euid = (I32)geteuid();
1409 croak("seteuid() not implemented");
1414 euid = (I32)geteuid();
1415 tainting |= (uid && (euid != uid || egid != gid));
1418 gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1420 delaymagic |= DM_RGID;
1421 break; /* don't do magic till later */
1424 (void)setrgid((Gid_t)gid);
1427 (void)setregid((Gid_t)gid, (Gid_t)-1);
1429 #ifdef HAS_SETRESGID
1430 (void)setresgid((Gid_t)gid, (Gid_t)-1, (Gid_t) 1);
1432 if (gid == egid) /* special case $( = $) */
1435 gid = (I32)getgid();
1436 croak("setrgid() not implemented");
1441 gid = (I32)getgid();
1442 tainting |= (uid && (euid != uid || egid != gid));
1445 egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1447 delaymagic |= DM_EGID;
1448 break; /* don't do magic till later */
1451 (void)setegid((Gid_t)egid);
1454 (void)setregid((Gid_t)-1, (Gid_t)egid);
1456 #ifdef HAS_SETRESGID
1457 (void)setresgid((Gid_t)-1, (Gid_t)egid, (Gid_t)-1);
1459 if (egid == gid) /* special case $) = $( */
1462 egid = (I32)getegid();
1463 croak("setegid() not implemented");
1468 egid = (I32)getegid();
1469 tainting |= (uid && (euid != uid || egid != gid));
1472 chopset = SvPV_force(sv,na);
1478 /* See if all the arguments are contiguous in memory */
1479 for (i = 1; i < origargc; i++) {
1480 if (origargv[i] == s + 1)
1481 s += strlen(++s); /* this one is ok too */
1483 /* can grab env area too? */
1484 if (origenviron && origenviron[0] == s + 1) {
1485 my_setenv("NoNeSuCh", Nullch);
1486 /* force copy of environment */
1487 for (i = 0; origenviron[i]; i++)
1488 if (origenviron[i] == s + 1)
1491 origalen = s - origargv[0];
1493 s = SvPV_force(sv,len);
1495 if (i >= origalen) {
1499 Copy(s, origargv[0], i, char);
1502 Copy(s, origargv[0], i, char);
1505 while (++i < origalen)
1508 for (i = 1; i < origargc; i++)
1509 origargv[i] = Nullch;
1520 register char **sigv;
1522 for (sigv = sig_name+1; *sigv; sigv++)
1523 if (strEQ(sig,*sigv))
1524 return sig_num[sigv - sig_name];
1526 if (strEQ(sig,"CHLD"))
1530 if (strEQ(sig,"CLD"))
1548 die("Signal SIG%s received, but no signal handler set.\n",
1551 cv = sv_2cv(psig_ptr[sig],&st,&gv,TRUE);
1552 if (!cv || !CvROOT(cv)) {
1554 warn("SIG%s handler \"%s\" not defined.\n",
1555 sig_name[sig], GvENAME(gv) );
1559 oldstack = curstack;
1560 if (curstack != signalstack)
1561 AvFILL(signalstack) = 0;
1562 SWITCHSTACK(curstack, signalstack);
1565 sv = SvREFCNT_inc(psig_name[sig]);
1567 sv = sv_newmortal();
1568 sv_setpv(sv,sig_name[sig]);
1574 perl_call_sv((SV*)cv, G_DISCARD);
1576 SWITCHSTACK(signalstack, oldstack);