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) { \
38 * Use the "DESTRUCTOR" scope cleanup to reinstate magic.
45 typedef struct magic_state MGS;
47 static void restore_magic _((void *p));
54 assert(SvMAGICAL(sv));
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;
72 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
75 SvFLAGS(sv) |= mgs->mgs_flags;
79 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
89 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
90 MGVTBL* vtbl = mg->mg_virtual;
92 if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP))
96 if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || vtbl->svt_clear)
112 save_magic(&mgs, sv);
115 while ((mg = *mgp) != 0) {
116 MGVTBL* vtbl = mg->mg_virtual;
117 if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) {
118 (*vtbl->svt_get)(sv, mg);
119 /* Ignore this magic if it's been deleted */
120 if ((mg == (mgp_valid ? *mgp : SvMAGIC(sv))) &&
121 (mg->mg_flags & MGf_GSKIP))
124 /* Advance to next magic (complicated by possible deletion) */
125 if (mg == (mgp_valid ? *mgp : SvMAGIC(sv))) {
126 mgp = &mg->mg_moremagic;
130 mgp = &SvMAGIC(sv); /* Re-establish pointer after sv_upgrade */
146 save_magic(&mgs, sv);
148 for (mg = SvMAGIC(sv); mg; mg = nextmg) {
149 MGVTBL* vtbl = mg->mg_virtual;
150 nextmg = mg->mg_moremagic; /* it may delete itself */
151 if (mg->mg_flags & MGf_GSKIP) {
152 mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */
155 if (vtbl && vtbl->svt_set)
156 (*vtbl->svt_set)(sv, mg);
171 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
172 MGVTBL* vtbl = mg->mg_virtual;
173 if (vtbl && vtbl->svt_len) {
177 save_magic(&mgs, sv);
178 /* omit MGf_GSKIP -- not changed here */
179 len = (*vtbl->svt_len)(sv, mg);
185 junk = SvPV(sv, len);
197 save_magic(&mgs, sv);
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]))
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;
317 if (curpm && (rx = curpm->op_pmregexp)) {
318 if ((s = rx->endp[0])) {
319 TAINT_IF(rx->exec_tainted);
320 return (STRLEN) (rx->subend - s);
325 return (STRLEN)ofslen;
327 return (STRLEN)orslen;
330 if (!SvPOK(sv) && SvNIOK(sv))
348 switch (*mg->mg_ptr) {
349 case '\001': /* ^A */
350 sv_setsv(sv, bodytarget);
352 case '\004': /* ^D */
353 sv_setiv(sv, (IV)(debug & 32767));
355 case '\005': /* ^E */
358 # include <descrip.h>
359 # include <starlet.h>
361 $DESCRIPTOR(msgdsc,msg);
362 sv_setnv(sv,(double) vaxc$errno);
363 if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1)
364 sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length);
370 sv_setnv(sv, (double)Perl_rc);
371 sv_setpv(sv, os2error(Perl_rc));
373 sv_setnv(sv, (double)errno);
374 sv_setpv(sv, errno ? Strerror(errno) : "");
377 SvNOK_on(sv); /* what a wonderful hack! */
379 case '\006': /* ^F */
380 sv_setiv(sv, (IV)maxsysfd);
382 case '\010': /* ^H */
383 sv_setiv(sv, (IV)hints);
387 sv_setpv(sv, inplace);
389 sv_setsv(sv, &sv_undef);
391 case '\017': /* ^O */
392 sv_setpv(sv, osname);
394 case '\020': /* ^P */
395 sv_setiv(sv, (IV)perldb);
397 case '\024': /* ^T */
399 sv_setnv(sv, basetime);
401 sv_setiv(sv, (IV)basetime);
404 case '\027': /* ^W */
405 sv_setiv(sv, (IV)dowarn);
407 case '1': case '2': case '3': case '4':
408 case '5': case '6': case '7': case '8': case '9': case '&':
409 if (curpm && (rx = curpm->op_pmregexp)) {
410 paren = atoi(GvENAME((GV*)mg->mg_obj));
412 if (paren <= rx->nparens &&
413 (s = rx->startp[paren]) &&
414 (t = rx->endp[paren]))
419 TAINT_FROM_REGEX(sv,rx);
424 sv_setsv(sv,&sv_undef);
427 if (curpm && (rx = curpm->op_pmregexp)) {
428 paren = rx->lastparen;
432 sv_setsv(sv,&sv_undef);
435 if (curpm && (rx = curpm->op_pmregexp)) {
436 if ((s = rx->subbeg)) {
437 i = rx->startp[0] - s;
440 TAINT_FROM_REGEX(sv,rx);
445 sv_setsv(sv,&sv_undef);
448 if (curpm && (rx = curpm->op_pmregexp)) {
449 if ((s = rx->endp[0])) {
450 sv_setpvn(sv,s, rx->subend - s);
451 TAINT_FROM_REGEX(sv,rx);
455 sv_setsv(sv,&sv_undef);
459 if (GvIO(last_in_gv)) {
460 sv_setiv(sv, (IV)IoLINES(GvIO(last_in_gv)));
465 sv_setiv(sv, (IV)statusvalue);
468 s = IoTOP_NAME(GvIOp(defoutgv));
472 sv_setpv(sv,GvENAME(defoutgv));
477 s = IoFMT_NAME(GvIOp(defoutgv));
479 s = GvENAME(defoutgv);
484 sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(defoutgv)));
487 sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(defoutgv)));
490 sv_setiv(sv, (IV)IoPAGE(GvIOp(defoutgv)));
498 sv_setiv(sv, (IV)curcop->cop_arybase);
501 sv_setiv(sv, (IV)(IoFLAGS(GvIOp(defoutgv)) & IOf_FLUSH) != 0 );
504 sv_setpvn(sv,ofs,ofslen);
507 sv_setpvn(sv,ors,orslen);
514 sv_setnv(sv, (double)((errno == EVMSERR) ? vaxc$errno : errno));
515 sv_setpv(sv, errno ? Strerror(errno) : "");
518 int saveerrno = errno;
519 sv_setnv(sv, (double)errno);
521 if (errno == errno_isOS2) sv_setpv(sv, os2error(Perl_rc));
524 sv_setpv(sv, errno ? Strerror(errno) : "");
528 SvNOK_on(sv); /* what a wonderful hack! */
531 sv_setiv(sv, (IV)uid);
534 sv_setiv(sv, (IV)euid);
537 sv_setiv(sv, (IV)gid);
539 (void)sprintf(s,"%d",(int)gid);
542 sv_setiv(sv, (IV)egid);
544 (void)sprintf(s,"%d",(int)egid);
549 Groups_t gary[NGROUPS];
551 i = getgroups(NGROUPS,gary);
553 (void)sprintf(s," %d", (int)gary[i]);
559 SvIOK_on(sv); /* what a wonderful hack! */
570 magic_getuvar(sv, mg)
574 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
576 if (uf && uf->uf_val)
577 (*uf->uf_val)(uf->uf_index, sv);
593 #ifdef DYNAMIC_ENV_FETCH
594 /* We just undefd an environment var. Is a replacement */
595 /* waiting in the wings? */
599 if (mg->mg_len == HEf_SVKEY) keysv = (SV *)mg->mg_ptr;
600 else keysv = newSVpv(mg->mg_ptr,mg->mg_len);
601 if (envhe = hv_fetch_ent(GvHVn(envgv),keysv,FALSE,0))
602 s = SvPV(HeVAL(envhe),len);
603 if (mg->mg_len != HEf_SVKEY) SvREFCNT_dec(keysv);
606 /* And you'll never guess what the dog had */
607 /* in its mouth... */
609 if (s && strEQ(ptr,"PATH")) {
610 char *strend = s + len;
613 s = cpytill(tokenbuf,s,strend,':',&i);
616 || (Stat(tokenbuf,&statbuf) && (statbuf.st_mode & 2)) )
625 magic_clearenv(sv,mg)
629 my_setenv(MgPV(mg),Nullch);
639 /* Are we fetching a signal entry? */
640 i = whichsig(MgPV(mg));
643 sv_setsv(sv,psig_ptr[i]);
645 Sighandler_t sigstate = rsignal_state(i);
647 /* cache state so we don't fetch it again */
648 if(sigstate == SIG_IGN)
649 sv_setpv(sv,"IGNORE");
651 sv_setsv(sv,&sv_undef);
652 psig_ptr[i] = SvREFCNT_inc(sv);
659 magic_clearsig(sv,mg)
664 /* Are we clearing a signal entry? */
665 i = whichsig(MgPV(mg));
668 SvREFCNT_dec(psig_ptr[i]);
672 SvREFCNT_dec(psig_name[i]);
690 if (strEQ(s,"__DIE__"))
692 else if (strEQ(s,"__WARN__"))
694 else if (strEQ(s,"__PARSE__"))
697 croak("No such hook: %s", s);
705 i = whichsig(s); /* ...no, a brick */
707 if (dowarn || strEQ(s,"ALARM"))
708 warn("No such signal: SIG%s", s);
712 SvREFCNT_dec(psig_ptr[i]);
713 psig_ptr[i] = SvREFCNT_inc(sv);
715 SvREFCNT_dec(psig_name[i]);
716 psig_name[i] = newSVpv(s,strlen(s));
717 SvTEMP_off(sv); /* Make sure it doesn't go away on us */
718 SvREADONLY_on(psig_name[i]);
720 if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) {
722 (void)rsignal(i, sighandler);
724 *svp = SvREFCNT_inc(sv);
727 s = SvPV_force(sv,na);
728 if (strEQ(s,"IGNORE")) {
730 (void)rsignal(i, SIG_IGN);
734 else if (strEQ(s,"DEFAULT") || !*s) {
736 (void)rsignal(i, SIG_DFL);
741 if(hints & HINT_STRICT_REFS)
742 die(no_symref,s,"a subroutine");
743 if (!strchr(s,':') && !strchr(s,'\'')) {
744 sprintf(tokenbuf, "main::%s",s);
745 sv_setpv(sv,tokenbuf);
748 (void)rsignal(i, sighandler);
750 *svp = SvREFCNT_inc(sv);
767 magic_setamagic(sv,mg)
771 /* HV_badAMAGIC_on(Sv_STASH(sv)); */
776 #endif /* OVERLOAD */
779 magic_setnkeys(sv,mg)
784 hv_ksplit((HV*)LvTARG(sv), SvIV(sv));
785 LvTARG(sv) = Nullsv; /* Don't allow a ref to reassign this. */
791 magic_methpack(sv,mg,meth)
805 PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
806 else if (mg->mg_len == HEf_SVKEY)
807 PUSHs((SV*)mg->mg_ptr);
809 else if (mg->mg_type == 'p')
810 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
813 if (perl_call_method(meth, G_SCALAR))
814 sv_setsv(sv, *stack_sp--);
826 magic_methpack(sv,mg,"FETCH");
828 mg->mg_flags |= MGf_GSKIP;
844 PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
845 else if (mg->mg_len == HEf_SVKEY)
846 PUSHs((SV*)mg->mg_ptr);
848 else if (mg->mg_type == 'p')
849 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
853 perl_call_method("STORE", G_SCALAR|G_DISCARD);
859 magic_clearpack(sv,mg)
863 return magic_methpack(sv,mg,"DELETE");
866 int magic_wipepack(sv,mg)
876 perl_call_method("CLEAR", G_SCALAR|G_DISCARD);
882 magic_nextpack(sv,mg,key)
888 char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
899 if (perl_call_method(meth, G_SCALAR))
900 sv_setsv(key, *stack_sp--);
908 magic_existspack(sv,mg)
912 return magic_methpack(sv,mg,"EXISTS");
916 magic_setdbline(sv,mg)
927 svp = av_fetch(GvAV(gv),
928 atoi(MgPV(mg)), FALSE);
929 if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp)))
932 warn("Can't break at that line\n");
937 magic_getarylen(sv,mg)
941 sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + curcop->cop_arybase);
946 magic_setarylen(sv,mg)
950 av_fill((AV*)mg->mg_obj, SvIV(sv) - curcop->cop_arybase);
959 SV* lsv = LvTARG(sv);
961 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) {
962 mg = mg_find(lsv, 'g');
963 if (mg && mg->mg_len >= 0) {
964 sv_setiv(sv, mg->mg_len + curcop->cop_arybase);
977 SV* lsv = LvTARG(sv);
983 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv))
984 mg = mg_find(lsv, 'g');
988 sv_magic(lsv, (SV*)0, 'g', Nullch, 0);
989 mg = mg_find(lsv, 'g');
991 else if (!SvOK(sv)) {
995 len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv);
997 pos = SvIV(sv) - curcop->cop_arybase;
1006 mg->mg_flags &= ~MGf_MINMATCH;
1012 magic_getglob(sv,mg)
1016 if (SvFAKE(sv)) { /* FAKE globs can get coerced */
1018 gv_efullname3(sv,((GV*)sv), "*");
1022 gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */
1027 magic_setglob(sv,mg)
1037 if (*s == '*' && s[1])
1039 gv = gv_fetchpv(s,TRUE, SVt_PVGV);
1044 GvGP(sv) = gp_ref(GvGP(gv));
1050 GvIOp(gv) = newIO();
1055 magic_setsubstr(sv,mg)
1060 char *tmps = SvPV(sv,len);
1061 sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len);
1066 magic_gettaint(sv,mg)
1070 TAINT_IF((mg->mg_len & 1) ||
1071 (mg->mg_len & 2) && mg->mg_obj == sv); /* kludge */
1076 magic_settaint(sv,mg)
1081 if (localizing == 1)
1098 do_vecset(sv); /* XXX slurp this routine */
1103 magic_getitervar(sv,mg)
1108 if (LvTARGLEN(sv)) {
1109 AV* av = (AV*)LvTARG(sv);
1110 if (LvTARGOFF(sv) <= AvFILL(av))
1111 targ = AvARRAY(av)[LvTARGOFF(sv)];
1115 sv_setsv(sv, targ ? targ : &sv_undef);
1120 magic_setitervar(sv,mg)
1127 sv_setsv(LvTARG(sv), sv);
1132 magic_freeitervar(sv,mg)
1136 SvREFCNT_dec(LvTARG(sv));
1148 av = (AV*)LvTARG(sv);
1149 if (LvTARGOFF(sv) <= AvFILL(av)) {
1150 SV** svp = AvARRAY(av) + LvTARGOFF(sv);
1151 LvTARG(sv) = newSVsv(*svp);
1153 *svp = SvREFCNT_inc(LvTARG(sv));
1156 LvTARG(sv) = Nullsv;
1162 magic_setmglob(sv,mg)
1176 sv_unmagic(sv, 'B');
1186 sv_unmagic(sv, 'f');
1192 magic_setuvar(sv,mg)
1196 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
1198 if (uf && uf->uf_set)
1199 (*uf->uf_set)(uf->uf_index, sv);
1203 #ifdef USE_LOCALE_COLLATE
1205 magic_setcollxfrm(sv,mg)
1210 * René Descartes said "I think not."
1211 * and vanished with a faint plop.
1214 Safefree(mg->mg_ptr);
1220 #endif /* USE_LOCALE_COLLATE */
1230 switch (*mg->mg_ptr) {
1231 case '\001': /* ^A */
1232 sv_setsv(bodytarget, sv);
1234 case '\004': /* ^D */
1235 debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000;
1236 DEBUG_x(dump_all());
1238 case '\005': /* ^E */
1240 set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1242 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv),4); /* will anyone ever use this? */
1245 case '\006': /* ^F */
1246 maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1248 case '\010': /* ^H */
1249 hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1255 inplace = savepv(SvPV(sv,na));
1259 case '\017': /* ^O */
1263 osname = savepv(SvPV(sv,na));
1267 case '\020': /* ^P */
1268 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1277 case '\024': /* ^T */
1279 basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv));
1281 basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1284 case '\027': /* ^W */
1285 dowarn = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1289 if (localizing == 1)
1290 save_sptr((SV**)&last_in_gv);
1292 else if (SvOK(sv) && GvIO(last_in_gv))
1293 IoLINES(GvIOp(last_in_gv)) = (long)SvIV(sv);
1296 Safefree(IoTOP_NAME(GvIOp(defoutgv)));
1297 IoTOP_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na));
1298 IoTOP_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1301 Safefree(IoFMT_NAME(GvIOp(defoutgv)));
1302 IoFMT_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na));
1303 IoFMT_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1306 IoPAGE_LEN(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1309 IoLINES_LEFT(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1310 if (IoLINES_LEFT(GvIOp(defoutgv)) < 0L)
1311 IoLINES_LEFT(GvIOp(defoutgv)) = 0L;
1314 IoPAGE(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1317 IoFLAGS(GvIOp(defoutgv)) &= ~IOf_FLUSH;
1318 if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) != 0) {
1319 IoFLAGS(GvIOp(defoutgv)) |= IOf_FLUSH;
1323 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1324 multiline = (i != 0);
1330 rs = SvREFCNT_inc(nrs);
1335 ors = savepv(SvPV(sv,orslen));
1340 ofs = savepv(SvPV(sv, ofslen));
1345 ofmt = savepv(SvPV(sv,na));
1348 compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1351 statusvalue = FIXSTATUS(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1354 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv),SvIV(sv) == EVMSERR ? 4 : vaxc$errno); /* will anyone ever use this? */
1357 uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1359 delaymagic |= DM_RUID;
1360 break; /* don't do magic till later */
1363 (void)setruid((Uid_t)uid);
1366 (void)setreuid((Uid_t)uid, (Uid_t)-1);
1368 #ifdef HAS_SETRESUID
1369 (void)setresuid((Uid_t)uid, (Uid_t)-1, (Uid_t)-1);
1371 if (uid == euid) /* special case $< = $> */
1374 uid = (I32)getuid();
1375 croak("setruid() not implemented");
1380 uid = (I32)getuid();
1381 tainting |= (uid && (euid != uid || egid != gid));
1384 euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1386 delaymagic |= DM_EUID;
1387 break; /* don't do magic till later */
1390 (void)seteuid((Uid_t)euid);
1393 (void)setreuid((Uid_t)-1, (Uid_t)euid);
1395 #ifdef HAS_SETRESUID
1396 (void)setresuid((Uid_t)-1, (Uid_t)euid, (Uid_t)-1);
1398 if (euid == uid) /* special case $> = $< */
1401 euid = (I32)geteuid();
1402 croak("seteuid() not implemented");
1407 euid = (I32)geteuid();
1408 tainting |= (uid && (euid != uid || egid != gid));
1411 gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1413 delaymagic |= DM_RGID;
1414 break; /* don't do magic till later */
1417 (void)setrgid((Gid_t)gid);
1420 (void)setregid((Gid_t)gid, (Gid_t)-1);
1422 #ifdef HAS_SETRESGID
1423 (void)setresgid((Gid_t)gid, (Gid_t)-1, (Gid_t) 1);
1425 if (gid == egid) /* special case $( = $) */
1428 gid = (I32)getgid();
1429 croak("setrgid() not implemented");
1434 gid = (I32)getgid();
1435 tainting |= (uid && (euid != uid || egid != gid));
1438 egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1440 delaymagic |= DM_EGID;
1441 break; /* don't do magic till later */
1444 (void)setegid((Gid_t)egid);
1447 (void)setregid((Gid_t)-1, (Gid_t)egid);
1449 #ifdef HAS_SETRESGID
1450 (void)setresgid((Gid_t)-1, (Gid_t)egid, (Gid_t)-1);
1452 if (egid == gid) /* special case $) = $( */
1455 egid = (I32)getegid();
1456 croak("setegid() not implemented");
1461 egid = (I32)getegid();
1462 tainting |= (uid && (euid != uid || egid != gid));
1465 chopset = SvPV_force(sv,na);
1471 /* See if all the arguments are contiguous in memory */
1472 for (i = 1; i < origargc; i++) {
1473 if (origargv[i] == s + 1)
1474 s += strlen(++s); /* this one is ok too */
1476 /* can grab env area too? */
1477 if (origenviron && origenviron[0] == s + 1) {
1478 my_setenv("NoNeSuCh", Nullch);
1479 /* force copy of environment */
1480 for (i = 0; origenviron[i]; i++)
1481 if (origenviron[i] == s + 1)
1484 origalen = s - origargv[0];
1486 s = SvPV_force(sv,len);
1488 if (i >= origalen) {
1492 Copy(s, origargv[0], i, char);
1495 Copy(s, origargv[0], i, char);
1498 while (++i < origalen)
1501 for (i = 1; i < origargc; i++)
1502 origargv[i] = Nullch;
1513 register char **sigv;
1515 for (sigv = sig_name+1; *sigv; sigv++)
1516 if (strEQ(sig,*sigv))
1517 return sig_num[sigv - sig_name];
1519 if (strEQ(sig,"CHLD"))
1523 if (strEQ(sig,"CLD"))
1541 die("Signal SIG%s received, but no signal handler set.\n",
1544 cv = sv_2cv(psig_ptr[sig],&st,&gv,TRUE);
1545 if (!cv || !CvROOT(cv)) {
1547 warn("SIG%s handler \"%s\" not defined.\n",
1548 sig_name[sig], GvENAME(gv) );
1552 oldstack = curstack;
1553 if (curstack != signalstack)
1554 AvFILL(signalstack) = 0;
1555 SWITCHSTACK(curstack, signalstack);
1558 sv = SvREFCNT_inc(psig_name[sig]);
1560 sv = sv_newmortal();
1561 sv_setpv(sv,sig_name[sig]);
1567 perl_call_sv((SV*)cv, G_DISCARD);
1569 SWITCHSTACK(signalstack, oldstack);