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));
52 assert(SvMAGICAL(sv));
55 mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv);
56 SAVEDESTRUCTOR(restore_magic, mgs);
60 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
70 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
73 SvFLAGS(sv) |= mgs->mgs_flags;
77 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
87 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
88 MGVTBL* vtbl = mg->mg_virtual;
90 if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP))
94 if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || vtbl->svt_clear)
110 save_magic(&mgs, sv);
113 while ((mg = *mgp) != 0) {
114 MGVTBL* vtbl = mg->mg_virtual;
115 if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) {
116 (*vtbl->svt_get)(sv, mg);
117 /* Ignore this magic if it's been deleted */
118 if ((mg == (mgp_valid ? *mgp : SvMAGIC(sv))) &&
119 (mg->mg_flags & MGf_GSKIP))
122 /* Advance to next magic (complicated by possible deletion) */
123 if (mg == (mgp_valid ? *mgp : SvMAGIC(sv))) {
124 mgp = &mg->mg_moremagic;
128 mgp = &SvMAGIC(sv); /* Re-establish pointer after sv_upgrade */
144 save_magic(&mgs, sv);
146 for (mg = SvMAGIC(sv); mg; mg = nextmg) {
147 MGVTBL* vtbl = mg->mg_virtual;
148 nextmg = mg->mg_moremagic; /* it may delete itself */
149 if (mg->mg_flags & MGf_GSKIP) {
150 mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */
153 if (vtbl && vtbl->svt_set)
154 (*vtbl->svt_set)(sv, mg);
169 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
170 MGVTBL* vtbl = mg->mg_virtual;
171 if (vtbl && vtbl->svt_len) {
175 save_magic(&mgs, sv);
176 /* omit MGf_GSKIP -- not changed here */
177 len = (*vtbl->svt_len)(sv, mg);
183 junk = SvPV(sv, len);
195 save_magic(&mgs, sv);
197 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
198 MGVTBL* vtbl = mg->mg_virtual;
199 /* omit GSKIP -- never set here */
201 if (vtbl && vtbl->svt_clear)
202 (*vtbl->svt_clear)(sv, mg);
215 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
216 if (mg->mg_type == type)
223 mg_copy(sv, nsv, key, klen)
231 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
232 if (isUPPER(mg->mg_type)) {
233 sv_magic(nsv, mg->mg_obj, toLOWER(mg->mg_type), key, klen);
246 for (mg = SvMAGIC(sv); mg; mg = moremagic) {
247 MGVTBL* vtbl = mg->mg_virtual;
248 moremagic = mg->mg_moremagic;
249 if (vtbl && vtbl->svt_free)
250 (*vtbl->svt_free)(sv, mg);
251 if (mg->mg_ptr && mg->mg_type != 'g')
253 Safefree(mg->mg_ptr);
254 else if (mg->mg_len == HEf_SVKEY)
255 SvREFCNT_dec((SV*)mg->mg_ptr);
256 if (mg->mg_flags & MGf_REFCOUNTED)
257 SvREFCNT_dec(mg->mg_obj);
264 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
279 switch (*mg->mg_ptr) {
280 case '1': case '2': case '3': case '4':
281 case '5': case '6': case '7': case '8': case '9': case '&':
282 if (curpm && (rx = curpm->op_pmregexp)) {
283 paren = atoi(mg->mg_ptr);
285 if (paren <= rx->nparens &&
286 (s = rx->startp[paren]) &&
287 (t = rx->endp[paren]))
291 TAINT_IF(rx->exec_tainted);
299 if (curpm && (rx = curpm->op_pmregexp)) {
300 paren = rx->lastparen;
308 if (curpm && (rx = curpm->op_pmregexp)) {
309 if ((s = rx->subbeg)) {
310 i = rx->startp[0] - s;
312 TAINT_IF(rx->exec_tainted);
319 if (curpm && (rx = curpm->op_pmregexp)) {
320 if ((s = rx->endp[0])) {
321 TAINT_IF(rx->exec_tainted);
322 return (STRLEN) (rx->subend - s);
327 return (STRLEN)ofslen;
329 return (STRLEN)orslen;
332 if (!SvPOK(sv) && SvNIOK(sv))
350 switch (*mg->mg_ptr) {
351 case '\001': /* ^A */
352 sv_setsv(sv, bodytarget);
354 case '\004': /* ^D */
355 sv_setiv(sv, (IV)(debug & 32767));
357 case '\005': /* ^E */
360 # include <descrip.h>
361 # include <starlet.h>
363 $DESCRIPTOR(msgdsc,msg);
364 sv_setnv(sv,(double) vaxc$errno);
365 if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1)
366 sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length);
372 sv_setnv(sv, (double)Perl_rc);
373 sv_setpv(sv, os2error(Perl_rc));
375 sv_setnv(sv, (double)errno);
376 sv_setpv(sv, errno ? Strerror(errno) : "");
379 SvNOK_on(sv); /* what a wonderful hack! */
381 case '\006': /* ^F */
382 sv_setiv(sv, (IV)maxsysfd);
384 case '\010': /* ^H */
385 sv_setiv(sv, (IV)hints);
389 sv_setpv(sv, inplace);
391 sv_setsv(sv, &sv_undef);
393 case '\017': /* ^O */
394 sv_setpv(sv, osname);
396 case '\020': /* ^P */
397 sv_setiv(sv, (IV)perldb);
399 case '\024': /* ^T */
401 sv_setnv(sv, basetime);
403 sv_setiv(sv, (IV)basetime);
406 case '\027': /* ^W */
407 sv_setiv(sv, (IV)dowarn);
409 case '1': case '2': case '3': case '4':
410 case '5': case '6': case '7': case '8': case '9': case '&':
411 if (curpm && (rx = curpm->op_pmregexp)) {
412 paren = atoi(GvENAME((GV*)mg->mg_obj));
414 if (paren <= rx->nparens &&
415 (s = rx->startp[paren]) &&
416 (t = rx->endp[paren]))
421 TAINT_FROM_REGEX(sv,rx);
426 sv_setsv(sv,&sv_undef);
429 if (curpm && (rx = curpm->op_pmregexp)) {
430 paren = rx->lastparen;
434 sv_setsv(sv,&sv_undef);
437 if (curpm && (rx = curpm->op_pmregexp)) {
438 if ((s = rx->subbeg)) {
439 i = rx->startp[0] - s;
442 TAINT_FROM_REGEX(sv,rx);
447 sv_setsv(sv,&sv_undef);
450 if (curpm && (rx = curpm->op_pmregexp)) {
451 if ((s = rx->endp[0])) {
452 sv_setpvn(sv,s, rx->subend - s);
453 TAINT_FROM_REGEX(sv,rx);
457 sv_setsv(sv,&sv_undef);
461 if (GvIO(last_in_gv)) {
462 sv_setiv(sv, (IV)IoLINES(GvIO(last_in_gv)));
467 sv_setiv(sv, (IV)statusvalue);
470 s = IoTOP_NAME(GvIOp(defoutgv));
474 sv_setpv(sv,GvENAME(defoutgv));
479 s = IoFMT_NAME(GvIOp(defoutgv));
481 s = GvENAME(defoutgv);
486 sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(defoutgv)));
489 sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(defoutgv)));
492 sv_setiv(sv, (IV)IoPAGE(GvIOp(defoutgv)));
500 sv_setiv(sv, (IV)curcop->cop_arybase);
503 sv_setiv(sv, (IV)(IoFLAGS(GvIOp(defoutgv)) & IOf_FLUSH) != 0 );
506 sv_setpvn(sv,ofs,ofslen);
509 sv_setpvn(sv,ors,orslen);
516 sv_setnv(sv, (double)((errno == EVMSERR) ? vaxc$errno : errno));
517 sv_setpv(sv, errno ? Strerror(errno) : "");
520 int saveerrno = errno;
521 sv_setnv(sv, (double)errno);
523 if (errno == errno_isOS2) sv_setpv(sv, os2error(Perl_rc));
526 sv_setpv(sv, errno ? Strerror(errno) : "");
530 SvNOK_on(sv); /* what a wonderful hack! */
533 sv_setiv(sv, (IV)uid);
536 sv_setiv(sv, (IV)euid);
539 sv_setiv(sv, (IV)gid);
541 (void)sprintf(s,"%d",(int)gid);
544 sv_setiv(sv, (IV)egid);
546 (void)sprintf(s,"%d",(int)egid);
551 Groups_t gary[NGROUPS];
553 i = getgroups(NGROUPS,gary);
555 (void)sprintf(s," %d", (int)gary[i]);
561 SvIOK_on(sv); /* what a wonderful hack! */
572 magic_getuvar(sv, mg)
576 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
578 if (uf && uf->uf_val)
579 (*uf->uf_val)(uf->uf_index, sv);
595 #ifdef DYNAMIC_ENV_FETCH
596 /* We just undefd an environment var. Is a replacement */
597 /* waiting in the wings? */
601 if (mg->mg_len == HEf_SVKEY) keysv = (SV *)mg->mg_ptr;
602 else keysv = newSVpv(mg->mg_ptr,mg->mg_len);
603 if (envhe = hv_fetch_ent(GvHVn(envgv),keysv,FALSE,0))
604 s = SvPV(HeVAL(envhe),len);
605 if (mg->mg_len != HEf_SVKEY) SvREFCNT_dec(keysv);
608 /* And you'll never guess what the dog had */
609 /* in its mouth... */
611 if (s && strEQ(ptr,"PATH")) {
612 char *strend = s + len;
615 s = cpytill(tokenbuf,s,strend,':',&i);
618 || (Stat(tokenbuf,&statbuf) && (statbuf.st_mode & 2)) )
627 magic_clearenv(sv,mg)
631 my_setenv(MgPV(mg),Nullch);
641 /* Are we fetching a signal entry? */
642 i = whichsig(MgPV(mg));
645 sv_setsv(sv,psig_ptr[i]);
647 Sighandler_t sigstate = rsignal_state(i);
649 /* cache state so we don't fetch it again */
650 if(sigstate == SIG_IGN)
651 sv_setpv(sv,"IGNORE");
653 sv_setsv(sv,&sv_undef);
654 psig_ptr[i] = SvREFCNT_inc(sv);
661 magic_clearsig(sv,mg)
666 /* Are we clearing a signal entry? */
667 i = whichsig(MgPV(mg));
670 SvREFCNT_dec(psig_ptr[i]);
674 SvREFCNT_dec(psig_name[i]);
692 if (strEQ(s,"__DIE__"))
694 else if (strEQ(s,"__WARN__"))
696 else if (strEQ(s,"__PARSE__"))
699 croak("No such hook: %s", s);
707 i = whichsig(s); /* ...no, a brick */
709 if (dowarn || strEQ(s,"ALARM"))
710 warn("No such signal: SIG%s", s);
714 SvREFCNT_dec(psig_ptr[i]);
715 psig_ptr[i] = SvREFCNT_inc(sv);
717 SvREFCNT_dec(psig_name[i]);
718 psig_name[i] = newSVpv(s,strlen(s));
719 SvTEMP_off(sv); /* Make sure it doesn't go away on us */
720 SvREADONLY_on(psig_name[i]);
722 if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) {
724 (void)rsignal(i, sighandler);
726 *svp = SvREFCNT_inc(sv);
729 s = SvPV_force(sv,na);
730 if (strEQ(s,"IGNORE")) {
732 (void)rsignal(i, SIG_IGN);
736 else if (strEQ(s,"DEFAULT") || !*s) {
738 (void)rsignal(i, SIG_DFL);
743 if(hints & HINT_STRICT_REFS)
744 die(no_symref,s,"a subroutine");
745 if (!strchr(s,':') && !strchr(s,'\'')) {
746 sprintf(tokenbuf, "main::%s",s);
747 sv_setpv(sv,tokenbuf);
750 (void)rsignal(i, sighandler);
752 *svp = SvREFCNT_inc(sv);
769 magic_setamagic(sv,mg)
773 /* HV_badAMAGIC_on(Sv_STASH(sv)); */
778 #endif /* OVERLOAD */
781 magic_setnkeys(sv,mg)
786 hv_ksplit((HV*)LvTARG(sv), SvIV(sv));
787 LvTARG(sv) = Nullsv; /* Don't allow a ref to reassign this. */
793 magic_methpack(sv,mg,meth)
807 PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
808 else if (mg->mg_len == HEf_SVKEY)
809 PUSHs((SV*)mg->mg_ptr);
811 else if (mg->mg_type == 'p')
812 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
815 if (perl_call_method(meth, G_SCALAR))
816 sv_setsv(sv, *stack_sp--);
828 magic_methpack(sv,mg,"FETCH");
830 mg->mg_flags |= MGf_GSKIP;
846 PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
847 else if (mg->mg_len == HEf_SVKEY)
848 PUSHs((SV*)mg->mg_ptr);
850 else if (mg->mg_type == 'p')
851 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
855 perl_call_method("STORE", G_SCALAR|G_DISCARD);
861 magic_clearpack(sv,mg)
865 return magic_methpack(sv,mg,"DELETE");
868 int magic_wipepack(sv,mg)
878 perl_call_method("CLEAR", G_SCALAR|G_DISCARD);
884 magic_nextpack(sv,mg,key)
890 char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
901 if (perl_call_method(meth, G_SCALAR))
902 sv_setsv(key, *stack_sp--);
910 magic_existspack(sv,mg)
914 return magic_methpack(sv,mg,"EXISTS");
918 magic_setdbline(sv,mg)
929 svp = av_fetch(GvAV(gv),
930 atoi(MgPV(mg)), FALSE);
931 if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp)))
934 warn("Can't break at that line\n");
939 magic_getarylen(sv,mg)
943 sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + curcop->cop_arybase);
948 magic_setarylen(sv,mg)
952 av_fill((AV*)mg->mg_obj, SvIV(sv) - curcop->cop_arybase);
961 SV* lsv = LvTARG(sv);
963 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) {
964 mg = mg_find(lsv, 'g');
965 if (mg && mg->mg_len >= 0) {
966 sv_setiv(sv, mg->mg_len + curcop->cop_arybase);
979 SV* lsv = LvTARG(sv);
985 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv))
986 mg = mg_find(lsv, 'g');
990 sv_magic(lsv, (SV*)0, 'g', Nullch, 0);
991 mg = mg_find(lsv, 'g');
993 else if (!SvOK(sv)) {
997 len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv);
999 pos = SvIV(sv) - curcop->cop_arybase;
1013 magic_getglob(sv,mg)
1017 if (SvFAKE(sv)) { /* FAKE globs can get coerced */
1019 gv_efullname3(sv,((GV*)sv), "*");
1023 gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */
1028 magic_setglob(sv,mg)
1038 if (*s == '*' && s[1])
1040 gv = gv_fetchpv(s,TRUE, SVt_PVGV);
1045 GvGP(sv) = gp_ref(GvGP(gv));
1051 GvIOp(gv) = newIO();
1056 magic_setsubstr(sv,mg)
1061 char *tmps = SvPV(sv,len);
1062 sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len);
1067 magic_gettaint(sv,mg)
1071 TAINT_IF((mg->mg_len & 1) ||
1072 (mg->mg_len & 2) && mg->mg_obj == sv); /* kludge */
1077 magic_settaint(sv,mg)
1082 if (localizing == 1)
1099 do_vecset(sv); /* XXX slurp this routine */
1104 magic_setmglob(sv,mg)
1118 sv_unmagic(sv, 'B');
1128 sv_unmagic(sv, 'f');
1134 magic_setuvar(sv,mg)
1138 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
1140 if (uf && uf->uf_set)
1141 (*uf->uf_set)(uf->uf_index, sv);
1146 magic_setcollxfrm(sv,mg)
1151 * René Descartes said "I think not."
1152 * and vanished with a faint plop.
1154 sv_unmagic(sv, 'o');
1166 switch (*mg->mg_ptr) {
1167 case '\001': /* ^A */
1168 sv_setsv(bodytarget, sv);
1170 case '\004': /* ^D */
1171 debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000;
1172 DEBUG_x(dump_all());
1174 case '\005': /* ^E */
1176 set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1178 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv),4); /* will anyone ever use this? */
1181 case '\006': /* ^F */
1182 maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1184 case '\010': /* ^H */
1185 hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1191 inplace = savepv(SvPV(sv,na));
1195 case '\017': /* ^O */
1199 osname = savepv(SvPV(sv,na));
1203 case '\020': /* ^P */
1204 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1213 case '\024': /* ^T */
1215 basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv));
1217 basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1220 case '\027': /* ^W */
1221 dowarn = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1225 if (localizing == 1)
1226 save_sptr((SV**)&last_in_gv);
1228 else if (SvOK(sv) && GvIO(last_in_gv))
1229 IoLINES(GvIOp(last_in_gv)) = (long)SvIV(sv);
1232 Safefree(IoTOP_NAME(GvIOp(defoutgv)));
1233 IoTOP_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na));
1234 IoTOP_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1237 Safefree(IoFMT_NAME(GvIOp(defoutgv)));
1238 IoFMT_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na));
1239 IoFMT_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1242 IoPAGE_LEN(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1245 IoLINES_LEFT(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1246 if (IoLINES_LEFT(GvIOp(defoutgv)) < 0L)
1247 IoLINES_LEFT(GvIOp(defoutgv)) = 0L;
1250 IoPAGE(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1253 IoFLAGS(GvIOp(defoutgv)) &= ~IOf_FLUSH;
1254 if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) != 0) {
1255 IoFLAGS(GvIOp(defoutgv)) |= IOf_FLUSH;
1259 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1260 multiline = (i != 0);
1266 rs = SvREFCNT_inc(nrs);
1271 ors = savepv(SvPV(sv,orslen));
1276 ofs = savepv(SvPV(sv, ofslen));
1281 ofmt = savepv(SvPV(sv,na));
1284 compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1287 statusvalue = FIXSTATUS(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1290 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv),SvIV(sv) == EVMSERR ? 4 : vaxc$errno); /* will anyone ever use this? */
1293 uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1295 delaymagic |= DM_RUID;
1296 break; /* don't do magic till later */
1299 (void)setruid((Uid_t)uid);
1302 (void)setreuid((Uid_t)uid, (Uid_t)-1);
1304 #ifdef HAS_SETRESUID
1305 (void)setresuid((Uid_t)uid, (Uid_t)-1, (Uid_t)-1);
1307 if (uid == euid) /* special case $< = $> */
1310 uid = (I32)getuid();
1311 croak("setruid() not implemented");
1316 uid = (I32)getuid();
1317 tainting |= (uid && (euid != uid || egid != gid));
1320 euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1322 delaymagic |= DM_EUID;
1323 break; /* don't do magic till later */
1326 (void)seteuid((Uid_t)euid);
1329 (void)setreuid((Uid_t)-1, (Uid_t)euid);
1331 #ifdef HAS_SETRESUID
1332 (void)setresuid((Uid_t)-1, (Uid_t)euid, (Uid_t)-1);
1334 if (euid == uid) /* special case $> = $< */
1337 euid = (I32)geteuid();
1338 croak("seteuid() not implemented");
1343 euid = (I32)geteuid();
1344 tainting |= (uid && (euid != uid || egid != gid));
1347 gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1349 delaymagic |= DM_RGID;
1350 break; /* don't do magic till later */
1353 (void)setrgid((Gid_t)gid);
1356 (void)setregid((Gid_t)gid, (Gid_t)-1);
1358 #ifdef HAS_SETRESGID
1359 (void)setresgid((Gid_t)gid, (Gid_t)-1, (Gid_t) 1);
1361 if (gid == egid) /* special case $( = $) */
1364 gid = (I32)getgid();
1365 croak("setrgid() not implemented");
1370 gid = (I32)getgid();
1371 tainting |= (uid && (euid != uid || egid != gid));
1374 egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1376 delaymagic |= DM_EGID;
1377 break; /* don't do magic till later */
1380 (void)setegid((Gid_t)egid);
1383 (void)setregid((Gid_t)-1, (Gid_t)egid);
1385 #ifdef HAS_SETRESGID
1386 (void)setresgid((Gid_t)-1, (Gid_t)egid, (Gid_t)-1);
1388 if (egid == gid) /* special case $) = $( */
1391 egid = (I32)getegid();
1392 croak("setegid() not implemented");
1397 egid = (I32)getegid();
1398 tainting |= (uid && (euid != uid || egid != gid));
1401 chopset = SvPV_force(sv,na);
1407 /* See if all the arguments are contiguous in memory */
1408 for (i = 1; i < origargc; i++) {
1409 if (origargv[i] == s + 1)
1410 s += strlen(++s); /* this one is ok too */
1412 /* can grab env area too? */
1413 if (origenviron && origenviron[0] == s + 1) {
1414 my_setenv("NoNeSuCh", Nullch);
1415 /* force copy of environment */
1416 for (i = 0; origenviron[i]; i++)
1417 if (origenviron[i] == s + 1)
1420 origalen = s - origargv[0];
1422 s = SvPV_force(sv,len);
1424 if (i >= origalen) {
1428 Copy(s, origargv[0], i, char);
1431 Copy(s, origargv[0], i, char);
1434 while (++i < origalen)
1437 for (i = 1; i < origargc; i++)
1438 origargv[i] = Nullch;
1449 register char **sigv;
1451 for (sigv = sig_name+1; *sigv; sigv++)
1452 if (strEQ(sig,*sigv))
1453 return sig_num[sigv - sig_name];
1455 if (strEQ(sig,"CHLD"))
1459 if (strEQ(sig,"CLD"))
1477 die("Signal SIG%s received, but no signal handler set.\n",
1480 cv = sv_2cv(psig_ptr[sig],&st,&gv,TRUE);
1481 if (!cv || !CvROOT(cv)) {
1483 warn("SIG%s handler \"%s\" not defined.\n",
1484 sig_name[sig], GvENAME(gv) );
1488 oldstack = curstack;
1489 if (curstack != signalstack)
1490 AvFILL(signalstack) = 0;
1491 SWITCHSTACK(curstack, signalstack);
1494 sv = SvREFCNT_inc(psig_name[sig]);
1496 sv = sv_newmortal();
1497 sv_setpv(sv,sig_name[sig]);
1503 perl_call_sv((SV*)cv, G_DISCARD);
1505 SWITCHSTACK(signalstack, oldstack);