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 /* Omit -- it causes too much grief on mixed systems.
25 * Use the "DESTRUCTOR" scope cleanup to reinstate magic.
32 typedef struct magic_state MGS;
34 static void restore_magic _((void *p));
42 assert(SvMAGICAL(sv));
44 mgs = (MGS*)safemalloc(sizeof(MGS));
46 mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv);
47 SAVEDESTRUCTOR(restore_magic, mgs);
51 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
63 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
66 SvFLAGS(sv) |= mgs->mgs_flags;
70 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
73 safefree((void *)mgs);
82 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
83 MGVTBL* vtbl = mg->mg_virtual;
85 if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP))
89 if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || vtbl->svt_clear)
105 mgs = save_magic(sv);
108 while ((mg = *mgp) != 0) {
109 MGVTBL* vtbl = mg->mg_virtual;
110 if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) {
111 (*vtbl->svt_get)(sv, mg);
112 /* Ignore this magic if it's been deleted */
113 if ((mg == (mgp_valid ? *mgp : SvMAGIC(sv))) && (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 mgs = save_magic(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) {
168 /* omit MGf_GSKIP -- not changed here */
169 len = (*vtbl->svt_len)(sv, mg);
175 junk = SvPV(sv, len);
188 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
189 MGVTBL* vtbl = mg->mg_virtual;
190 /* omit GSKIP -- never set here */
192 if (vtbl && vtbl->svt_clear)
193 (*vtbl->svt_clear)(sv, mg);
206 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
207 if (mg->mg_type == type)
214 mg_copy(sv, nsv, key, klen)
222 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
223 if (isUPPER(mg->mg_type)) {
224 sv_magic(nsv, mg->mg_obj, toLOWER(mg->mg_type), key, klen);
237 for (mg = SvMAGIC(sv); mg; mg = moremagic) {
238 MGVTBL* vtbl = mg->mg_virtual;
239 moremagic = mg->mg_moremagic;
240 if (vtbl && vtbl->svt_free)
241 (*vtbl->svt_free)(sv, mg);
242 if (mg->mg_ptr && mg->mg_type != 'g')
244 Safefree(mg->mg_ptr);
245 else if (mg->mg_len == HEf_SVKEY)
246 SvREFCNT_dec((SV*)mg->mg_ptr);
247 if (mg->mg_flags & MGf_REFCOUNTED)
248 SvREFCNT_dec(mg->mg_obj);
255 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
269 switch (*mg->mg_ptr) {
270 case '1': case '2': case '3': case '4':
271 case '5': case '6': case '7': case '8': case '9': case '&':
273 paren = atoi(mg->mg_ptr);
275 if (curpm->op_pmregexp &&
276 paren <= curpm->op_pmregexp->nparens &&
277 (s = curpm->op_pmregexp->startp[paren]) &&
278 (t = curpm->op_pmregexp->endp[paren]) ) {
288 paren = curpm->op_pmregexp->lastparen;
297 if (curpm->op_pmregexp &&
298 (s = curpm->op_pmregexp->subbeg) ) {
299 i = curpm->op_pmregexp->startp[0] - s;
307 if (curpm->op_pmregexp &&
308 (s = curpm->op_pmregexp->endp[0]) ) {
309 return (STRLEN) (curpm->op_pmregexp->subend - s);
314 return (STRLEN)ofslen;
316 return (STRLEN)orslen;
319 if (!SvPOK(sv) && SvNIOK(sv))
336 switch (*mg->mg_ptr) {
337 case '\001': /* ^A */
338 sv_setsv(sv, bodytarget);
340 case '\004': /* ^D */
341 sv_setiv(sv,(I32)(debug & 32767));
343 case '\005': /* ^E */
346 # include <descrip.h>
347 # include <starlet.h>
349 $DESCRIPTOR(msgdsc,msg);
350 sv_setnv(sv,(double)vaxc$errno);
351 if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1)
352 sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length);
358 sv_setnv(sv,(double)Perl_rc);
359 sv_setpv(sv, os2error(Perl_rc));
361 sv_setnv(sv,(double)errno);
362 sv_setpv(sv, errno ? Strerror(errno) : "");
365 SvNOK_on(sv); /* what a wonderful hack! */
367 case '\006': /* ^F */
368 sv_setiv(sv,(I32)maxsysfd);
370 case '\010': /* ^H */
371 sv_setiv(sv,(I32)hints);
375 sv_setpv(sv, inplace);
377 sv_setsv(sv,&sv_undef);
379 case '\017': /* ^O */
382 case '\020': /* ^P */
383 sv_setiv(sv,(I32)perldb);
385 case '\024': /* ^T */
387 sv_setnv(sv,basetime);
389 sv_setiv(sv,(I32)basetime);
392 case '\027': /* ^W */
393 sv_setiv(sv,(I32)dowarn);
395 case '1': case '2': case '3': case '4':
396 case '5': case '6': case '7': case '8': case '9': case '&':
398 paren = atoi(GvENAME((GV*)mg->mg_obj));
400 if (curpm->op_pmregexp &&
401 paren <= curpm->op_pmregexp->nparens &&
402 (s = curpm->op_pmregexp->startp[paren]) &&
403 (t = curpm->op_pmregexp->endp[paren]) ) {
408 if (tainting && (tmg = mg_find(sv,'t')))
409 tmg->mg_len = 0; /* guarantee $1 untainted */
414 sv_setsv(sv,&sv_undef);
418 paren = curpm->op_pmregexp->lastparen;
422 sv_setsv(sv,&sv_undef);
426 if (curpm->op_pmregexp &&
427 (s = curpm->op_pmregexp->subbeg) ) {
428 i = curpm->op_pmregexp->startp[0] - s;
435 sv_setsv(sv,&sv_undef);
439 if (curpm->op_pmregexp &&
440 (s = curpm->op_pmregexp->endp[0]) ) {
441 sv_setpvn(sv,s, curpm->op_pmregexp->subend - s);
445 sv_setsv(sv,&sv_undef);
449 if (GvIO(last_in_gv)) {
450 sv_setiv(sv,(I32)IoLINES(GvIO(last_in_gv)));
455 sv_setiv(sv,(I32)statusvalue);
458 s = IoTOP_NAME(GvIOp(defoutgv));
462 sv_setpv(sv,GvENAME(defoutgv));
467 s = IoFMT_NAME(GvIOp(defoutgv));
469 s = GvENAME(defoutgv);
474 sv_setiv(sv,(I32)IoPAGE_LEN(GvIOp(defoutgv)));
477 sv_setiv(sv,(I32)IoLINES_LEFT(GvIOp(defoutgv)));
480 sv_setiv(sv,(I32)IoPAGE(GvIOp(defoutgv)));
488 sv_setiv(sv,(I32)curcop->cop_arybase);
491 sv_setiv(sv, (IoFLAGS(GvIOp(defoutgv)) & IOf_FLUSH) != 0 );
494 sv_setpvn(sv,ofs,ofslen);
497 sv_setpvn(sv,ors,orslen);
504 sv_setnv(sv,(double)((errno == EVMSERR) ? vaxc$errno : errno));
505 sv_setpv(sv, errno ? Strerror(errno) : "");
508 int saveerrno = errno;
509 sv_setnv(sv,(double)errno);
511 if (errno == errno_isOS2) sv_setpv(sv, os2error(Perl_rc));
514 sv_setpv(sv, errno ? Strerror(errno) : "");
518 SvNOK_on(sv); /* what a wonderful hack! */
521 sv_setiv(sv,(I32)uid);
524 sv_setiv(sv,(I32)euid);
528 (void)sprintf(s,"%d",(int)gid);
532 (void)sprintf(s,"%d",(int)egid);
540 Groups_t gary[NGROUPS];
542 i = getgroups(NGROUPS,gary);
544 (void)sprintf(s," %ld", (long)gary[i]);
560 magic_getuvar(sv, mg)
564 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
566 if (uf && uf->uf_val)
567 (*uf->uf_val)(uf->uf_index, sv);
581 ptr = (mg->mg_len == HEf_SVKEY) ? SvPV((SV*)mg->mg_ptr, na) : mg->mg_ptr;
583 #ifdef DYNAMIC_ENV_FETCH
584 /* We just undefd an environment var. Is a replacement */
585 /* waiting in the wings? */
588 if (envhe = hv_fetch_ent(GvHVn(envgv),HeSVKEY((HE*)(mg->mg_ptr)),FALSE,0))
589 s = SvPV(HeVAL(envhe),len);
592 /* And you'll never guess what the dog had */
593 /* in its mouth... */
595 if (s && strEQ(ptr,"PATH")) {
596 char *strend = s + len;
599 s = cpytill(tokenbuf,s,strend,':',&i);
602 || (Stat(tokenbuf,&statbuf) && (statbuf.st_mode & 2)) )
611 magic_clearenv(sv,mg)
615 my_setenv(((mg->mg_len == HEf_SVKEY) ?
616 SvPV((SV*)mg->mg_ptr, na) : mg->mg_ptr),Nullch);
621 /* set up reliable signal() clone */
623 typedef void (*Sigfunc) _((int));
626 Sigfunc rsignal(signo,handler)
630 struct sigaction act,oact;
632 act.sa_handler = handler;
633 sigemptyset(&act.sa_mask);
636 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
638 if (sigaction(signo, &act, &oact) < 0)
641 return(oact.sa_handler);
646 /* ah well, so much for reliability */
648 #define rsignal(x,y) signal(x,y)
666 /* Are we fetching a signal entry? */
667 i = whichsig(mg->mg_ptr);
670 sv_setsv(sv,psig_ptr[i]);
672 void (*origsig) _((int));
673 /* get signal state without losing signals */
675 origsig = rsignal(i,sig_trap);
679 /* cache state so we don't fetch it again */
680 if(origsig == SIG_IGN)
681 sv_setpv(sv,"IGNORE");
683 sv_setsv(sv,&sv_undef);
684 psig_ptr[i] = SvREFCNT_inc(sv);
691 magic_clearsig(sv,mg)
696 /* Are we clearing a signal entry? */
697 i = whichsig(mg->mg_ptr);
700 SvREFCNT_dec(psig_ptr[i]);
704 SvREFCNT_dec(psig_name[i]);
720 s = (mg->mg_len == HEf_SVKEY) ? SvPV((SV*)mg->mg_ptr, na) : mg->mg_ptr;
722 if (strEQ(s,"__DIE__"))
724 else if (strEQ(s,"__WARN__"))
726 else if (strEQ(s,"__PARSE__"))
729 croak("No such hook: %s", s);
737 i = whichsig(s); /* ...no, a brick */
739 if (dowarn || strEQ(s,"ALARM"))
740 warn("No such signal: SIG%s", s);
744 SvREFCNT_dec(psig_ptr[i]);
745 psig_ptr[i] = SvREFCNT_inc(sv);
747 SvREFCNT_dec(psig_name[i]);
748 psig_name[i] = newSVpv(mg->mg_ptr,strlen(mg->mg_ptr));
749 SvTEMP_off(sv); /* Make sure it doesn't go away on us */
750 SvREADONLY_on(psig_name[i]);
752 if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) {
754 (void)rsignal(i,sighandler);
756 *svp = SvREFCNT_inc(sv);
759 s = SvPV_force(sv,na);
760 if (strEQ(s,"IGNORE")) {
762 (void)rsignal(i,SIG_IGN);
766 else if (strEQ(s,"DEFAULT") || !*s) {
768 (void)rsignal(i,SIG_DFL);
773 if(hints & HINT_STRICT_REFS)
774 die(no_symref,s,"a subroutine");
775 if (!strchr(s,':') && !strchr(s,'\'')) {
776 sprintf(tokenbuf, "main::%s",s);
777 sv_setpv(sv,tokenbuf);
780 (void)rsignal(i,sighandler);
782 *svp = SvREFCNT_inc(sv);
799 magic_setamagic(sv,mg)
803 /* HV_badAMAGIC_on(Sv_STASH(sv)); */
808 #endif /* OVERLOAD */
811 magic_methpack(sv,mg,meth)
825 PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
826 else if (mg->mg_len == HEf_SVKEY)
827 PUSHs((SV*)mg->mg_ptr);
829 else if (mg->mg_type == 'p')
830 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
833 if (perl_call_method(meth, G_SCALAR))
834 sv_setsv(sv, *stack_sp--);
846 magic_methpack(sv,mg,"FETCH");
848 mg->mg_flags |= MGf_GSKIP;
864 PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
865 else if (mg->mg_len == HEf_SVKEY)
866 PUSHs((SV*)mg->mg_ptr);
868 else if (mg->mg_type == 'p')
869 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
873 perl_call_method("STORE", G_SCALAR|G_DISCARD);
879 magic_clearpack(sv,mg)
883 return magic_methpack(sv,mg,"DELETE");
886 int magic_wipepack(sv,mg)
896 perl_call_method("CLEAR", G_SCALAR|G_DISCARD);
902 magic_nextpack(sv,mg,key)
908 char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
919 if (perl_call_method(meth, G_SCALAR))
920 sv_setsv(key, *stack_sp--);
928 magic_existspack(sv,mg)
932 return magic_methpack(sv,mg,"EXISTS");
936 magic_setdbline(sv,mg)
947 svp = av_fetch(GvAV(gv),atoi(mg->mg_ptr), FALSE);
948 if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp)))
951 warn("Can't break at that line\n");
956 magic_getarylen(sv,mg)
960 sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + curcop->cop_arybase);
965 magic_setarylen(sv,mg)
969 av_fill((AV*)mg->mg_obj, SvIV(sv) - curcop->cop_arybase);
978 SV* lsv = LvTARG(sv);
980 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) {
981 mg = mg_find(lsv, 'g');
982 if (mg && mg->mg_len >= 0) {
983 sv_setiv(sv, mg->mg_len + curcop->cop_arybase);
996 SV* lsv = LvTARG(sv);
1002 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv))
1003 mg = mg_find(lsv, 'g');
1007 sv_magic(lsv, (SV*)0, 'g', Nullch, 0);
1008 mg = mg_find(lsv, 'g');
1010 else if (!SvOK(sv)) {
1014 len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv);
1016 pos = SvIV(sv) - curcop->cop_arybase;
1030 magic_getglob(sv,mg)
1034 gv_efullname(sv,((GV*)sv));/* a gv value, be nice */
1039 magic_setglob(sv,mg)
1049 if (*s == '*' && s[1])
1051 gv = gv_fetchpv(s,TRUE, SVt_PVGV);
1056 GvGP(sv) = gp_ref(GvGP(gv));
1062 GvIOp(gv) = newIO();
1067 magic_setsubstr(sv,mg)
1072 char *tmps = SvPV(sv,len);
1073 sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len);
1078 magic_gettaint(sv,mg)
1084 else if (mg->mg_len & 2 && mg->mg_obj == sv) /* kludge */
1090 magic_settaint(sv,mg)
1095 if (localizing == 1)
1112 do_vecset(sv); /* XXX slurp this routine */
1117 magic_setmglob(sv,mg)
1131 sv_unmagic(sv, 'B');
1137 magic_setuvar(sv,mg)
1141 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
1143 if (uf && uf->uf_set)
1144 (*uf->uf_set)(uf->uf_index, sv);
1156 switch (*mg->mg_ptr) {
1157 case '\001': /* ^A */
1158 sv_setsv(bodytarget, sv);
1160 case '\004': /* ^D */
1161 debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000;
1162 DEBUG_x(dump_all());
1164 case '\005': /* ^E */
1166 set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1168 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv),4); /* will anyone ever use this? */
1171 case '\006': /* ^F */
1172 maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1174 case '\010': /* ^H */
1175 hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1181 inplace = savepv(SvPV(sv,na));
1185 case '\017': /* ^O */
1189 osname = savepv(SvPV(sv,na));
1193 case '\020': /* ^P */
1194 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1203 case '\024': /* ^T */
1205 basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv));
1207 basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1210 case '\027': /* ^W */
1211 dowarn = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1215 if (localizing == 1)
1216 save_sptr((SV**)&last_in_gv);
1218 else if (SvOK(sv) && GvIO(last_in_gv))
1219 IoLINES(GvIOp(last_in_gv)) = (long)SvIV(sv);
1222 Safefree(IoTOP_NAME(GvIOp(defoutgv)));
1223 IoTOP_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na));
1224 IoTOP_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1227 Safefree(IoFMT_NAME(GvIOp(defoutgv)));
1228 IoFMT_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na));
1229 IoFMT_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1232 IoPAGE_LEN(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1235 IoLINES_LEFT(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1236 if (IoLINES_LEFT(GvIOp(defoutgv)) < 0L)
1237 IoLINES_LEFT(GvIOp(defoutgv)) = 0L;
1240 IoPAGE(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1243 IoFLAGS(GvIOp(defoutgv)) &= ~IOf_FLUSH;
1244 if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) != 0) {
1245 IoFLAGS(GvIOp(defoutgv)) |= IOf_FLUSH;
1249 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1250 multiline = (i != 0);
1256 rs = SvREFCNT_inc(nrs);
1261 ors = savepv(SvPV(sv,orslen));
1266 ofs = savepv(SvPV(sv, ofslen));
1271 ofmt = savepv(SvPV(sv,na));
1274 compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1277 statusvalue = FIXSTATUS(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1280 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv),SvIV(sv) == EVMSERR ? 4 : vaxc$errno); /* will anyone ever use this? */
1283 uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1285 delaymagic |= DM_RUID;
1286 break; /* don't do magic till later */
1289 (void)setruid((Uid_t)uid);
1292 (void)setreuid((Uid_t)uid, (Uid_t)-1);
1294 #ifdef HAS_SETRESUID
1295 (void)setresuid((Uid_t)uid, (Uid_t)-1, (Uid_t)-1);
1297 if (uid == euid) /* special case $< = $> */
1300 uid = (I32)getuid();
1301 croak("setruid() not implemented");
1306 uid = (I32)getuid();
1307 tainting |= (uid && (euid != uid || egid != gid));
1310 euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1312 delaymagic |= DM_EUID;
1313 break; /* don't do magic till later */
1316 (void)seteuid((Uid_t)euid);
1319 (void)setreuid((Uid_t)-1, (Uid_t)euid);
1321 #ifdef HAS_SETRESUID
1322 (void)setresuid((Uid_t)-1, (Uid_t)euid, (Uid_t)-1);
1324 if (euid == uid) /* special case $> = $< */
1327 euid = (I32)geteuid();
1328 croak("seteuid() not implemented");
1333 euid = (I32)geteuid();
1334 tainting |= (uid && (euid != uid || egid != gid));
1337 gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1339 delaymagic |= DM_RGID;
1340 break; /* don't do magic till later */
1343 (void)setrgid((Gid_t)gid);
1346 (void)setregid((Gid_t)gid, (Gid_t)-1);
1348 #ifdef HAS_SETRESGID
1349 (void)setresgid((Gid_t)gid, (Gid_t)-1, (Gid_t) 1);
1351 if (gid == egid) /* special case $( = $) */
1354 gid = (I32)getgid();
1355 croak("setrgid() not implemented");
1360 gid = (I32)getgid();
1361 tainting |= (uid && (euid != uid || egid != gid));
1364 egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1366 delaymagic |= DM_EGID;
1367 break; /* don't do magic till later */
1370 (void)setegid((Gid_t)egid);
1373 (void)setregid((Gid_t)-1, (Gid_t)egid);
1375 #ifdef HAS_SETRESGID
1376 (void)setresgid((Gid_t)-1, (Gid_t)egid, (Gid_t)-1);
1378 if (egid == gid) /* special case $) = $( */
1381 egid = (I32)getegid();
1382 croak("setegid() not implemented");
1387 egid = (I32)getegid();
1388 tainting |= (uid && (euid != uid || egid != gid));
1391 chopset = SvPV_force(sv,na);
1397 /* See if all the arguments are contiguous in memory */
1398 for (i = 1; i < origargc; i++) {
1399 if (origargv[i] == s + 1)
1400 s += strlen(++s); /* this one is ok too */
1402 if (origenviron[0] == s + 1) { /* can grab env area too? */
1403 my_setenv("NoNeSuCh", Nullch);
1404 /* force copy of environment */
1405 for (i = 0; origenviron[i]; i++)
1406 if (origenviron[i] == s + 1)
1409 origalen = s - origargv[0];
1411 s = SvPV_force(sv,len);
1413 if (i >= origalen) {
1417 Copy(s, origargv[0], i, char);
1420 Copy(s, origargv[0], i, char);
1423 while (++i < origalen)
1426 for (i = 1; i < origargc; i++)
1427 origargv[i] = Nullch;
1438 register char **sigv;
1440 for (sigv = sig_name+1; *sigv; sigv++)
1441 if (strEQ(sig,*sigv))
1442 return sig_num[sigv - sig_name];
1444 if (strEQ(sig,"CHLD"))
1448 if (strEQ(sig,"CLD"))
1466 die("Signal SIG%s received, but no signal handler set.\n",
1469 cv = sv_2cv(psig_ptr[sig],&st,&gv,TRUE);
1470 if (!cv || !CvROOT(cv)) {
1472 warn("SIG%s handler \"%s\" not defined.\n",
1473 sig_name[sig], GvENAME(gv) );
1477 oldstack = curstack;
1478 if (curstack != signalstack)
1479 AvFILL(signalstack) = 0;
1480 SWITCHSTACK(curstack, signalstack);
1483 sv = SvREFCNT_inc(psig_name[sig]);
1485 sv = sv_newmortal();
1486 sv_setpv(sv,sig_name[sig]);
1492 perl_call_sv((SV*)cv, G_DISCARD);
1494 SWITCHSTACK(signalstack, oldstack);