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. */
29 #define TAINT_FROM_REGEX(sv,rx) \
30 if ((rx)->exec_tainted) { \
36 * Use the "DESTRUCTOR" scope cleanup to reinstate magic.
43 typedef struct magic_state MGS;
45 static void restore_magic _((void *p));
53 assert(SvMAGICAL(sv));
55 mgs = (MGS*)safemalloc(sizeof(MGS));
57 mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv);
58 SAVEDESTRUCTOR(restore_magic, mgs);
62 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
74 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
77 SvFLAGS(sv) |= mgs->mgs_flags;
81 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
93 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
94 MGVTBL* vtbl = mg->mg_virtual;
96 if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP))
100 if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || vtbl->svt_clear)
116 mgs = save_magic(sv);
119 while ((mg = *mgp) != 0) {
120 MGVTBL* vtbl = mg->mg_virtual;
121 if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) {
122 (*vtbl->svt_get)(sv, mg);
123 /* Ignore this magic if it's been deleted */
124 if ((mg == (mgp_valid ? *mgp : SvMAGIC(sv))) && (mg->mg_flags & MGf_GSKIP))
127 /* Advance to next magic (complicated by possible deletion) */
128 if (mg == (mgp_valid ? *mgp : SvMAGIC(sv))) {
129 mgp = &mg->mg_moremagic;
133 mgp = &SvMAGIC(sv); /* Re-establish pointer after sv_upgrade */
149 mgs = save_magic(sv);
151 for (mg = SvMAGIC(sv); mg; mg = nextmg) {
152 MGVTBL* vtbl = mg->mg_virtual;
153 nextmg = mg->mg_moremagic; /* it may delete itself */
154 if (mg->mg_flags & MGf_GSKIP) {
155 mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */
158 if (vtbl && vtbl->svt_set)
159 (*vtbl->svt_set)(sv, mg);
174 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
175 MGVTBL* vtbl = mg->mg_virtual;
176 if (vtbl && vtbl->svt_len) {
179 /* omit MGf_GSKIP -- not changed here */
180 len = (*vtbl->svt_len)(sv, mg);
186 junk = SvPV(sv, len);
199 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
200 MGVTBL* vtbl = mg->mg_virtual;
201 /* omit GSKIP -- never set here */
203 if (vtbl && vtbl->svt_clear)
204 (*vtbl->svt_clear)(sv, mg);
217 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
218 if (mg->mg_type == type)
225 mg_copy(sv, nsv, key, klen)
233 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
234 if (isUPPER(mg->mg_type)) {
235 sv_magic(nsv, mg->mg_obj, toLOWER(mg->mg_type), key, klen);
248 for (mg = SvMAGIC(sv); mg; mg = moremagic) {
249 MGVTBL* vtbl = mg->mg_virtual;
250 moremagic = mg->mg_moremagic;
251 if (vtbl && vtbl->svt_free)
252 (*vtbl->svt_free)(sv, mg);
253 if (mg->mg_ptr && mg->mg_type != 'g')
255 Safefree(mg->mg_ptr);
256 else if (mg->mg_len == HEf_SVKEY)
257 SvREFCNT_dec((SV*)mg->mg_ptr);
258 if (mg->mg_flags & MGf_REFCOUNTED)
259 SvREFCNT_dec(mg->mg_obj);
266 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
281 switch (*mg->mg_ptr) {
282 case '1': case '2': case '3': case '4':
283 case '5': case '6': case '7': case '8': case '9': case '&':
284 if (curpm && (rx = curpm->op_pmregexp)) {
285 paren = atoi(mg->mg_ptr);
287 if (paren <= rx->nparens &&
288 (s = rx->startp[paren]) &&
289 (t = rx->endp[paren]))
293 TAINT_IF(rx->exec_tainted);
301 if (curpm && (rx = curpm->op_pmregexp)) {
302 paren = rx->lastparen;
310 if (curpm && (rx = curpm->op_pmregexp)) {
311 if ((s = rx->subbeg)) {
312 i = rx->startp[0] - s;
314 TAINT_IF(rx->exec_tainted);
321 if (curpm && (rx = curpm->op_pmregexp)) {
322 if ((s = rx->endp[0])) {
323 TAINT_IF(rx->exec_tainted);
324 return (STRLEN) (rx->subend - s);
329 return (STRLEN)ofslen;
331 return (STRLEN)orslen;
334 if (!SvPOK(sv) && SvNIOK(sv))
352 switch (*mg->mg_ptr) {
353 case '\001': /* ^A */
354 sv_setsv(sv, bodytarget);
356 case '\004': /* ^D */
357 sv_setiv(sv, (IV)(debug & 32767));
359 case '\005': /* ^E */
362 # include <descrip.h>
363 # include <starlet.h>
365 $DESCRIPTOR(msgdsc,msg);
366 sv_setnv(sv,(double) vaxc$errno);
367 if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1)
368 sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length);
374 sv_setnv(sv, (double)Perl_rc);
375 sv_setpv(sv, os2error(Perl_rc));
377 sv_setnv(sv, (double)errno);
378 sv_setpv(sv, errno ? Strerror(errno) : "");
381 SvNOK_on(sv); /* what a wonderful hack! */
383 case '\006': /* ^F */
384 sv_setiv(sv, (IV)maxsysfd);
386 case '\010': /* ^H */
387 sv_setiv(sv, (IV)hints);
391 sv_setpv(sv, inplace);
393 sv_setsv(sv, &sv_undef);
395 case '\017': /* ^O */
396 sv_setpv(sv, osname);
398 case '\020': /* ^P */
399 sv_setiv(sv, (IV)perldb);
401 case '\024': /* ^T */
403 sv_setnv(sv, basetime);
405 sv_setiv(sv, (IV)basetime);
408 case '\027': /* ^W */
409 sv_setiv(sv, (IV)dowarn);
411 case '1': case '2': case '3': case '4':
412 case '5': case '6': case '7': case '8': case '9': case '&':
413 if (curpm && (rx = curpm->op_pmregexp)) {
414 paren = atoi(GvENAME((GV*)mg->mg_obj));
416 if (paren <= rx->nparens &&
417 (s = rx->startp[paren]) &&
418 (t = rx->endp[paren]))
423 TAINT_FROM_REGEX(sv,rx);
428 sv_setsv(sv,&sv_undef);
431 if (curpm && (rx = curpm->op_pmregexp)) {
432 paren = rx->lastparen;
436 sv_setsv(sv,&sv_undef);
439 if (curpm && (rx = curpm->op_pmregexp)) {
440 if ((s = rx->subbeg)) {
441 i = rx->startp[0] - s;
444 TAINT_FROM_REGEX(sv,rx);
449 sv_setsv(sv,&sv_undef);
452 if (curpm && (rx = curpm->op_pmregexp)) {
453 if ((s = rx->endp[0])) {
454 sv_setpvn(sv,s, rx->subend - s);
455 TAINT_FROM_REGEX(sv,rx);
459 sv_setsv(sv,&sv_undef);
463 if (GvIO(last_in_gv)) {
464 sv_setiv(sv, (IV)IoLINES(GvIO(last_in_gv)));
469 sv_setiv(sv, (IV)statusvalue);
472 s = IoTOP_NAME(GvIOp(defoutgv));
476 sv_setpv(sv,GvENAME(defoutgv));
481 s = IoFMT_NAME(GvIOp(defoutgv));
483 s = GvENAME(defoutgv);
488 sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(defoutgv)));
491 sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(defoutgv)));
494 sv_setiv(sv, (IV)IoPAGE(GvIOp(defoutgv)));
502 sv_setiv(sv, (IV)curcop->cop_arybase);
505 sv_setiv(sv, (IV)(IoFLAGS(GvIOp(defoutgv)) & IOf_FLUSH) != 0 );
508 sv_setpvn(sv,ofs,ofslen);
511 sv_setpvn(sv,ors,orslen);
518 sv_setnv(sv, (double)((errno == EVMSERR) ? vaxc$errno : errno));
519 sv_setpv(sv, errno ? Strerror(errno) : "");
522 int saveerrno = errno;
523 sv_setnv(sv, (double)errno);
525 if (errno == errno_isOS2) sv_setpv(sv, os2error(Perl_rc));
528 sv_setpv(sv, errno ? Strerror(errno) : "");
532 SvNOK_on(sv); /* what a wonderful hack! */
535 sv_setiv(sv, (IV)uid);
538 sv_setiv(sv, (IV)euid);
541 sv_setiv(sv, (IV)gid);
543 (void)sprintf(s,"%d",(int)gid);
546 sv_setiv(sv, (IV)egid);
548 (void)sprintf(s,"%d",(int)egid);
553 Groups_t gary[NGROUPS];
555 i = getgroups(NGROUPS,gary);
557 (void)sprintf(s," %d", (int)gary[i]);
563 SvIOK_on(sv); /* what a wonderful hack! */
574 magic_getuvar(sv, mg)
578 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
580 if (uf && uf->uf_val)
581 (*uf->uf_val)(uf->uf_index, sv);
597 #ifdef DYNAMIC_ENV_FETCH
598 /* We just undefd an environment var. Is a replacement */
599 /* waiting in the wings? */
603 if (mg->mg_len == HEf_SVKEY) keysv = (SV *)mg->mg_ptr;
604 else keysv = newSVpv(mg->mg_ptr,mg->mg_len);
605 if (envhe = hv_fetch_ent(GvHVn(envgv),keysv,FALSE,0))
606 s = SvPV(HeVAL(envhe),len);
607 if (mg->mg_len != HEf_SVKEY) SvREFCNT_dec(keysv);
610 /* And you'll never guess what the dog had */
611 /* in its mouth... */
613 if (s && strEQ(ptr,"PATH")) {
614 char *strend = s + len;
617 s = cpytill(tokenbuf,s,strend,':',&i);
620 || (Stat(tokenbuf,&statbuf) && (statbuf.st_mode & 2)) )
629 magic_clearenv(sv,mg)
633 my_setenv(MgPV(mg),Nullch);
643 /* Are we fetching a signal entry? */
644 i = whichsig(MgPV(mg));
647 sv_setsv(sv,psig_ptr[i]);
649 Sighandler_t sigstate = rsignal_state(i);
651 /* cache state so we don't fetch it again */
652 if(sigstate == SIG_IGN)
653 sv_setpv(sv,"IGNORE");
655 sv_setsv(sv,&sv_undef);
656 psig_ptr[i] = SvREFCNT_inc(sv);
663 magic_clearsig(sv,mg)
668 /* Are we clearing a signal entry? */
669 i = whichsig(MgPV(mg));
672 SvREFCNT_dec(psig_ptr[i]);
676 SvREFCNT_dec(psig_name[i]);
694 if (strEQ(s,"__DIE__"))
696 else if (strEQ(s,"__WARN__"))
698 else if (strEQ(s,"__PARSE__"))
701 croak("No such hook: %s", s);
709 i = whichsig(s); /* ...no, a brick */
711 if (dowarn || strEQ(s,"ALARM"))
712 warn("No such signal: SIG%s", s);
716 SvREFCNT_dec(psig_ptr[i]);
717 psig_ptr[i] = SvREFCNT_inc(sv);
719 SvREFCNT_dec(psig_name[i]);
720 psig_name[i] = newSVpv(s,strlen(s));
721 SvTEMP_off(sv); /* Make sure it doesn't go away on us */
722 SvREADONLY_on(psig_name[i]);
724 if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) {
726 (void)rsignal(i, sighandler);
728 *svp = SvREFCNT_inc(sv);
731 s = SvPV_force(sv,na);
732 if (strEQ(s,"IGNORE")) {
734 (void)rsignal(i, SIG_IGN);
738 else if (strEQ(s,"DEFAULT") || !*s) {
740 (void)rsignal(i, SIG_DFL);
745 if(hints & HINT_STRICT_REFS)
746 die(no_symref,s,"a subroutine");
747 if (!strchr(s,':') && !strchr(s,'\'')) {
748 sprintf(tokenbuf, "main::%s",s);
749 sv_setpv(sv,tokenbuf);
752 (void)rsignal(i, sighandler);
754 *svp = SvREFCNT_inc(sv);
771 magic_setamagic(sv,mg)
775 /* HV_badAMAGIC_on(Sv_STASH(sv)); */
780 #endif /* OVERLOAD */
783 magic_setnkeys(sv,mg)
788 hv_ksplit((HV*)LvTARG(sv), SvIV(sv));
789 LvTARG(sv) = Nullsv; /* Don't allow a ref to reassign this. */
795 magic_methpack(sv,mg,meth)
809 PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
810 else if (mg->mg_len == HEf_SVKEY)
811 PUSHs((SV*)mg->mg_ptr);
813 else if (mg->mg_type == 'p')
814 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
817 if (perl_call_method(meth, G_SCALAR))
818 sv_setsv(sv, *stack_sp--);
830 magic_methpack(sv,mg,"FETCH");
832 mg->mg_flags |= MGf_GSKIP;
848 PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
849 else if (mg->mg_len == HEf_SVKEY)
850 PUSHs((SV*)mg->mg_ptr);
852 else if (mg->mg_type == 'p')
853 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
857 perl_call_method("STORE", G_SCALAR|G_DISCARD);
863 magic_clearpack(sv,mg)
867 return magic_methpack(sv,mg,"DELETE");
870 int magic_wipepack(sv,mg)
880 perl_call_method("CLEAR", G_SCALAR|G_DISCARD);
886 magic_nextpack(sv,mg,key)
892 char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
903 if (perl_call_method(meth, G_SCALAR))
904 sv_setsv(key, *stack_sp--);
912 magic_existspack(sv,mg)
916 return magic_methpack(sv,mg,"EXISTS");
920 magic_setdbline(sv,mg)
931 svp = av_fetch(GvAV(gv),
932 atoi(MgPV(mg)), FALSE);
933 if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp)))
936 warn("Can't break at that line\n");
941 magic_getarylen(sv,mg)
945 sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + curcop->cop_arybase);
950 magic_setarylen(sv,mg)
954 av_fill((AV*)mg->mg_obj, SvIV(sv) - curcop->cop_arybase);
963 SV* lsv = LvTARG(sv);
965 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) {
966 mg = mg_find(lsv, 'g');
967 if (mg && mg->mg_len >= 0) {
968 sv_setiv(sv, mg->mg_len + curcop->cop_arybase);
981 SV* lsv = LvTARG(sv);
987 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv))
988 mg = mg_find(lsv, 'g');
992 sv_magic(lsv, (SV*)0, 'g', Nullch, 0);
993 mg = mg_find(lsv, 'g');
995 else if (!SvOK(sv)) {
999 len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv);
1001 pos = SvIV(sv) - curcop->cop_arybase;
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));
1053 GvIOp(gv) = newIO();
1058 magic_setsubstr(sv,mg)
1063 char *tmps = SvPV(sv,len);
1064 sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len);
1069 magic_gettaint(sv,mg)
1073 TAINT_IF((mg->mg_len & 1) ||
1074 (mg->mg_len & 2) && mg->mg_obj == sv); /* kludge */
1079 magic_settaint(sv,mg)
1084 if (localizing == 1)
1101 do_vecset(sv); /* XXX slurp this routine */
1106 magic_setmglob(sv,mg)
1120 sv_unmagic(sv, 'B');
1130 sv_unmagic(sv, 'f');
1136 magic_setuvar(sv,mg)
1140 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
1142 if (uf && uf->uf_set)
1143 (*uf->uf_set)(uf->uf_index, sv);
1148 magic_setcollxfrm(sv,mg)
1153 * René Descartes said "I think not."
1154 * and vanished with a faint plop.
1156 sv_unmagic(sv, 'o');
1168 switch (*mg->mg_ptr) {
1169 case '\001': /* ^A */
1170 sv_setsv(bodytarget, sv);
1172 case '\004': /* ^D */
1173 debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000;
1174 DEBUG_x(dump_all());
1176 case '\005': /* ^E */
1178 set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1180 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv),4); /* will anyone ever use this? */
1183 case '\006': /* ^F */
1184 maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1186 case '\010': /* ^H */
1187 hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1193 inplace = savepv(SvPV(sv,na));
1197 case '\017': /* ^O */
1201 osname = savepv(SvPV(sv,na));
1205 case '\020': /* ^P */
1206 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1215 case '\024': /* ^T */
1217 basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv));
1219 basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1222 case '\027': /* ^W */
1223 dowarn = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1227 if (localizing == 1)
1228 save_sptr((SV**)&last_in_gv);
1230 else if (SvOK(sv) && GvIO(last_in_gv))
1231 IoLINES(GvIOp(last_in_gv)) = (long)SvIV(sv);
1234 Safefree(IoTOP_NAME(GvIOp(defoutgv)));
1235 IoTOP_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na));
1236 IoTOP_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1239 Safefree(IoFMT_NAME(GvIOp(defoutgv)));
1240 IoFMT_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na));
1241 IoFMT_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1244 IoPAGE_LEN(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1247 IoLINES_LEFT(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1248 if (IoLINES_LEFT(GvIOp(defoutgv)) < 0L)
1249 IoLINES_LEFT(GvIOp(defoutgv)) = 0L;
1252 IoPAGE(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1255 IoFLAGS(GvIOp(defoutgv)) &= ~IOf_FLUSH;
1256 if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) != 0) {
1257 IoFLAGS(GvIOp(defoutgv)) |= IOf_FLUSH;
1261 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1262 multiline = (i != 0);
1268 rs = SvREFCNT_inc(nrs);
1273 ors = savepv(SvPV(sv,orslen));
1278 ofs = savepv(SvPV(sv, ofslen));
1283 ofmt = savepv(SvPV(sv,na));
1286 compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1289 statusvalue = FIXSTATUS(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1292 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv),SvIV(sv) == EVMSERR ? 4 : vaxc$errno); /* will anyone ever use this? */
1295 uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1297 delaymagic |= DM_RUID;
1298 break; /* don't do magic till later */
1301 (void)setruid((Uid_t)uid);
1304 (void)setreuid((Uid_t)uid, (Uid_t)-1);
1306 #ifdef HAS_SETRESUID
1307 (void)setresuid((Uid_t)uid, (Uid_t)-1, (Uid_t)-1);
1309 if (uid == euid) /* special case $< = $> */
1312 uid = (I32)getuid();
1313 croak("setruid() not implemented");
1318 uid = (I32)getuid();
1319 tainting |= (uid && (euid != uid || egid != gid));
1322 euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1324 delaymagic |= DM_EUID;
1325 break; /* don't do magic till later */
1328 (void)seteuid((Uid_t)euid);
1331 (void)setreuid((Uid_t)-1, (Uid_t)euid);
1333 #ifdef HAS_SETRESUID
1334 (void)setresuid((Uid_t)-1, (Uid_t)euid, (Uid_t)-1);
1336 if (euid == uid) /* special case $> = $< */
1339 euid = (I32)geteuid();
1340 croak("seteuid() not implemented");
1345 euid = (I32)geteuid();
1346 tainting |= (uid && (euid != uid || egid != gid));
1349 gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1351 delaymagic |= DM_RGID;
1352 break; /* don't do magic till later */
1355 (void)setrgid((Gid_t)gid);
1358 (void)setregid((Gid_t)gid, (Gid_t)-1);
1360 #ifdef HAS_SETRESGID
1361 (void)setresgid((Gid_t)gid, (Gid_t)-1, (Gid_t) 1);
1363 if (gid == egid) /* special case $( = $) */
1366 gid = (I32)getgid();
1367 croak("setrgid() not implemented");
1372 gid = (I32)getgid();
1373 tainting |= (uid && (euid != uid || egid != gid));
1376 egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1378 delaymagic |= DM_EGID;
1379 break; /* don't do magic till later */
1382 (void)setegid((Gid_t)egid);
1385 (void)setregid((Gid_t)-1, (Gid_t)egid);
1387 #ifdef HAS_SETRESGID
1388 (void)setresgid((Gid_t)-1, (Gid_t)egid, (Gid_t)-1);
1390 if (egid == gid) /* special case $) = $( */
1393 egid = (I32)getegid();
1394 croak("setegid() not implemented");
1399 egid = (I32)getegid();
1400 tainting |= (uid && (euid != uid || egid != gid));
1403 chopset = SvPV_force(sv,na);
1409 /* See if all the arguments are contiguous in memory */
1410 for (i = 1; i < origargc; i++) {
1411 if (origargv[i] == s + 1)
1412 s += strlen(++s); /* this one is ok too */
1414 /* can grab env area too? */
1415 if (origenviron && origenviron[0] == s + 1) {
1416 my_setenv("NoNeSuCh", Nullch);
1417 /* force copy of environment */
1418 for (i = 0; origenviron[i]; i++)
1419 if (origenviron[i] == s + 1)
1422 origalen = s - origargv[0];
1424 s = SvPV_force(sv,len);
1426 if (i >= origalen) {
1430 Copy(s, origargv[0], i, char);
1433 Copy(s, origargv[0], i, char);
1436 while (++i < origalen)
1439 for (i = 1; i < origargc; i++)
1440 origargv[i] = Nullch;
1451 register char **sigv;
1453 for (sigv = sig_name+1; *sigv; sigv++)
1454 if (strEQ(sig,*sigv))
1455 return sig_num[sigv - sig_name];
1457 if (strEQ(sig,"CHLD"))
1461 if (strEQ(sig,"CLD"))
1479 die("Signal SIG%s received, but no signal handler set.\n",
1482 cv = sv_2cv(psig_ptr[sig],&st,&gv,TRUE);
1483 if (!cv || !CvROOT(cv)) {
1485 warn("SIG%s handler \"%s\" not defined.\n",
1486 sig_name[sig], GvENAME(gv) );
1490 oldstack = curstack;
1491 if (curstack != signalstack)
1492 AvFILL(signalstack) = 0;
1493 SWITCHSTACK(curstack, signalstack);
1496 sv = SvREFCNT_inc(psig_name[sig]);
1498 sv = sv_newmortal();
1499 sv_setpv(sv,sig_name[sig]);
1505 perl_call_sv((SV*)cv, G_DISCARD);
1507 SWITCHSTACK(signalstack, oldstack);