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);
638 /* set up reliable signal() clone */
640 typedef void (*Sigfunc) _((int));
643 Sigfunc rsignal(signo,handler)
647 struct sigaction act,oact;
649 act.sa_handler = handler;
650 sigemptyset(&act.sa_mask);
653 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
655 if (sigaction(signo, &act, &oact) < 0)
658 return(oact.sa_handler);
663 /* ah well, so much for reliability */
665 #define rsignal(x,y) signal(x,y)
683 /* Are we fetching a signal entry? */
684 i = whichsig(MgPV(mg));
687 sv_setsv(sv,psig_ptr[i]);
689 void (*origsig) _((int));
690 /* get signal state without losing signals */
692 origsig = rsignal(i,sig_trap);
696 /* cache state so we don't fetch it again */
697 if(origsig == SIG_IGN)
698 sv_setpv(sv,"IGNORE");
700 sv_setsv(sv,&sv_undef);
701 psig_ptr[i] = SvREFCNT_inc(sv);
708 magic_clearsig(sv,mg)
713 /* Are we clearing a signal entry? */
714 i = whichsig(MgPV(mg));
717 SvREFCNT_dec(psig_ptr[i]);
721 SvREFCNT_dec(psig_name[i]);
739 if (strEQ(s,"__DIE__"))
741 else if (strEQ(s,"__WARN__"))
743 else if (strEQ(s,"__PARSE__"))
746 croak("No such hook: %s", s);
754 i = whichsig(s); /* ...no, a brick */
756 if (dowarn || strEQ(s,"ALARM"))
757 warn("No such signal: SIG%s", s);
761 SvREFCNT_dec(psig_ptr[i]);
762 psig_ptr[i] = SvREFCNT_inc(sv);
764 SvREFCNT_dec(psig_name[i]);
765 psig_name[i] = newSVpv(s,strlen(s));
766 SvTEMP_off(sv); /* Make sure it doesn't go away on us */
767 SvREADONLY_on(psig_name[i]);
769 if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) {
771 (void)rsignal(i,sighandler);
773 *svp = SvREFCNT_inc(sv);
776 s = SvPV_force(sv,na);
777 if (strEQ(s,"IGNORE")) {
779 (void)rsignal(i,SIG_IGN);
783 else if (strEQ(s,"DEFAULT") || !*s) {
785 (void)rsignal(i,SIG_DFL);
790 if(hints & HINT_STRICT_REFS)
791 die(no_symref,s,"a subroutine");
792 if (!strchr(s,':') && !strchr(s,'\'')) {
793 sprintf(tokenbuf, "main::%s",s);
794 sv_setpv(sv,tokenbuf);
797 (void)rsignal(i,sighandler);
799 *svp = SvREFCNT_inc(sv);
816 magic_setamagic(sv,mg)
820 /* HV_badAMAGIC_on(Sv_STASH(sv)); */
825 #endif /* OVERLOAD */
828 magic_setnkeys(sv,mg)
833 hv_ksplit((HV*)LvTARG(sv), SvIV(sv));
834 LvTARG(sv) = Nullsv; /* Don't allow a ref to reassign this. */
840 magic_methpack(sv,mg,meth)
854 PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
855 else if (mg->mg_len == HEf_SVKEY)
856 PUSHs((SV*)mg->mg_ptr);
858 else if (mg->mg_type == 'p')
859 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
862 if (perl_call_method(meth, G_SCALAR))
863 sv_setsv(sv, *stack_sp--);
875 magic_methpack(sv,mg,"FETCH");
877 mg->mg_flags |= MGf_GSKIP;
893 PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
894 else if (mg->mg_len == HEf_SVKEY)
895 PUSHs((SV*)mg->mg_ptr);
897 else if (mg->mg_type == 'p')
898 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
902 perl_call_method("STORE", G_SCALAR|G_DISCARD);
908 magic_clearpack(sv,mg)
912 return magic_methpack(sv,mg,"DELETE");
915 int magic_wipepack(sv,mg)
925 perl_call_method("CLEAR", G_SCALAR|G_DISCARD);
931 magic_nextpack(sv,mg,key)
937 char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
948 if (perl_call_method(meth, G_SCALAR))
949 sv_setsv(key, *stack_sp--);
957 magic_existspack(sv,mg)
961 return magic_methpack(sv,mg,"EXISTS");
965 magic_setdbline(sv,mg)
976 svp = av_fetch(GvAV(gv),
977 atoi(MgPV(mg)), FALSE);
978 if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp)))
981 warn("Can't break at that line\n");
986 magic_getarylen(sv,mg)
990 sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + curcop->cop_arybase);
995 magic_setarylen(sv,mg)
999 av_fill((AV*)mg->mg_obj, SvIV(sv) - curcop->cop_arybase);
1008 SV* lsv = LvTARG(sv);
1010 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) {
1011 mg = mg_find(lsv, 'g');
1012 if (mg && mg->mg_len >= 0) {
1013 sv_setiv(sv, mg->mg_len + curcop->cop_arybase);
1026 SV* lsv = LvTARG(sv);
1032 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv))
1033 mg = mg_find(lsv, 'g');
1037 sv_magic(lsv, (SV*)0, 'g', Nullch, 0);
1038 mg = mg_find(lsv, 'g');
1040 else if (!SvOK(sv)) {
1044 len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv);
1046 pos = SvIV(sv) - curcop->cop_arybase;
1060 magic_getglob(sv,mg)
1064 if (SvFAKE(sv)) { /* FAKE globs can get coerced */
1066 gv_efullname3(sv,((GV*)sv), "*");
1070 gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */
1075 magic_setglob(sv,mg)
1085 if (*s == '*' && s[1])
1087 gv = gv_fetchpv(s,TRUE, SVt_PVGV);
1092 GvGP(sv) = gp_ref(GvGP(gv));
1098 GvIOp(gv) = newIO();
1103 magic_setsubstr(sv,mg)
1108 char *tmps = SvPV(sv,len);
1109 sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len);
1114 magic_gettaint(sv,mg)
1118 TAINT_IF((mg->mg_len & 1) ||
1119 (mg->mg_len & 2) && mg->mg_obj == sv); /* kludge */
1124 magic_settaint(sv,mg)
1129 if (localizing == 1)
1146 do_vecset(sv); /* XXX slurp this routine */
1151 magic_setmglob(sv,mg)
1165 sv_unmagic(sv, 'B');
1175 sv_unmagic(sv, 'f');
1181 magic_setuvar(sv,mg)
1185 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
1187 if (uf && uf->uf_set)
1188 (*uf->uf_set)(uf->uf_index, sv);
1193 magic_setcollxfrm(sv,mg)
1198 * René Descartes said "I think not."
1199 * and vanished with a faint plop.
1201 sv_unmagic(sv, 'o');
1213 switch (*mg->mg_ptr) {
1214 case '\001': /* ^A */
1215 sv_setsv(bodytarget, sv);
1217 case '\004': /* ^D */
1218 debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000;
1219 DEBUG_x(dump_all());
1221 case '\005': /* ^E */
1223 set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1225 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv),4); /* will anyone ever use this? */
1228 case '\006': /* ^F */
1229 maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1231 case '\010': /* ^H */
1232 hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1238 inplace = savepv(SvPV(sv,na));
1242 case '\017': /* ^O */
1246 osname = savepv(SvPV(sv,na));
1250 case '\020': /* ^P */
1251 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1260 case '\024': /* ^T */
1262 basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv));
1264 basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1267 case '\027': /* ^W */
1268 dowarn = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1272 if (localizing == 1)
1273 save_sptr((SV**)&last_in_gv);
1275 else if (SvOK(sv) && GvIO(last_in_gv))
1276 IoLINES(GvIOp(last_in_gv)) = (long)SvIV(sv);
1279 Safefree(IoTOP_NAME(GvIOp(defoutgv)));
1280 IoTOP_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na));
1281 IoTOP_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1284 Safefree(IoFMT_NAME(GvIOp(defoutgv)));
1285 IoFMT_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na));
1286 IoFMT_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1289 IoPAGE_LEN(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1292 IoLINES_LEFT(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1293 if (IoLINES_LEFT(GvIOp(defoutgv)) < 0L)
1294 IoLINES_LEFT(GvIOp(defoutgv)) = 0L;
1297 IoPAGE(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1300 IoFLAGS(GvIOp(defoutgv)) &= ~IOf_FLUSH;
1301 if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) != 0) {
1302 IoFLAGS(GvIOp(defoutgv)) |= IOf_FLUSH;
1306 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1307 multiline = (i != 0);
1313 rs = SvREFCNT_inc(nrs);
1318 ors = savepv(SvPV(sv,orslen));
1323 ofs = savepv(SvPV(sv, ofslen));
1328 ofmt = savepv(SvPV(sv,na));
1331 compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1334 statusvalue = FIXSTATUS(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1337 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv),SvIV(sv) == EVMSERR ? 4 : vaxc$errno); /* will anyone ever use this? */
1340 uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1342 delaymagic |= DM_RUID;
1343 break; /* don't do magic till later */
1346 (void)setruid((Uid_t)uid);
1349 (void)setreuid((Uid_t)uid, (Uid_t)-1);
1351 #ifdef HAS_SETRESUID
1352 (void)setresuid((Uid_t)uid, (Uid_t)-1, (Uid_t)-1);
1354 if (uid == euid) /* special case $< = $> */
1357 uid = (I32)getuid();
1358 croak("setruid() not implemented");
1363 uid = (I32)getuid();
1364 tainting |= (uid && (euid != uid || egid != gid));
1367 euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1369 delaymagic |= DM_EUID;
1370 break; /* don't do magic till later */
1373 (void)seteuid((Uid_t)euid);
1376 (void)setreuid((Uid_t)-1, (Uid_t)euid);
1378 #ifdef HAS_SETRESUID
1379 (void)setresuid((Uid_t)-1, (Uid_t)euid, (Uid_t)-1);
1381 if (euid == uid) /* special case $> = $< */
1384 euid = (I32)geteuid();
1385 croak("seteuid() not implemented");
1390 euid = (I32)geteuid();
1391 tainting |= (uid && (euid != uid || egid != gid));
1394 gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1396 delaymagic |= DM_RGID;
1397 break; /* don't do magic till later */
1400 (void)setrgid((Gid_t)gid);
1403 (void)setregid((Gid_t)gid, (Gid_t)-1);
1405 #ifdef HAS_SETRESGID
1406 (void)setresgid((Gid_t)gid, (Gid_t)-1, (Gid_t) 1);
1408 if (gid == egid) /* special case $( = $) */
1411 gid = (I32)getgid();
1412 croak("setrgid() not implemented");
1417 gid = (I32)getgid();
1418 tainting |= (uid && (euid != uid || egid != gid));
1421 egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1423 delaymagic |= DM_EGID;
1424 break; /* don't do magic till later */
1427 (void)setegid((Gid_t)egid);
1430 (void)setregid((Gid_t)-1, (Gid_t)egid);
1432 #ifdef HAS_SETRESGID
1433 (void)setresgid((Gid_t)-1, (Gid_t)egid, (Gid_t)-1);
1435 if (egid == gid) /* special case $) = $( */
1438 egid = (I32)getegid();
1439 croak("setegid() not implemented");
1444 egid = (I32)getegid();
1445 tainting |= (uid && (euid != uid || egid != gid));
1448 chopset = SvPV_force(sv,na);
1454 /* See if all the arguments are contiguous in memory */
1455 for (i = 1; i < origargc; i++) {
1456 if (origargv[i] == s + 1)
1457 s += strlen(++s); /* this one is ok too */
1459 /* can grab env area too? */
1460 if (origenviron && origenviron[0] == s + 1) {
1461 my_setenv("NoNeSuCh", Nullch);
1462 /* force copy of environment */
1463 for (i = 0; origenviron[i]; i++)
1464 if (origenviron[i] == s + 1)
1467 origalen = s - origargv[0];
1469 s = SvPV_force(sv,len);
1471 if (i >= origalen) {
1475 Copy(s, origargv[0], i, char);
1478 Copy(s, origargv[0], i, char);
1481 while (++i < origalen)
1484 for (i = 1; i < origargc; i++)
1485 origargv[i] = Nullch;
1496 register char **sigv;
1498 for (sigv = sig_name+1; *sigv; sigv++)
1499 if (strEQ(sig,*sigv))
1500 return sig_num[sigv - sig_name];
1502 if (strEQ(sig,"CHLD"))
1506 if (strEQ(sig,"CLD"))
1524 die("Signal SIG%s received, but no signal handler set.\n",
1527 cv = sv_2cv(psig_ptr[sig],&st,&gv,TRUE);
1528 if (!cv || !CvROOT(cv)) {
1530 warn("SIG%s handler \"%s\" not defined.\n",
1531 sig_name[sig], GvENAME(gv) );
1535 oldstack = curstack;
1536 if (curstack != signalstack)
1537 AvFILL(signalstack) = 0;
1538 SWITCHSTACK(curstack, signalstack);
1541 sv = SvREFCNT_inc(psig_name[sig]);
1543 sv = sv_newmortal();
1544 sv_setpv(sv,sig_name[sig]);
1550 perl_call_sv((SV*)cv, G_DISCARD);
1552 SWITCHSTACK(signalstack, oldstack);