3 * Copyright (c) 1991-1997, 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. */
23 #if defined(HAS_GETGROUPS) || defined(HAS_SETGROUPS)
30 * Use the "DESTRUCTOR" scope cleanup to reinstate magic.
37 typedef struct magic_state MGS;
39 static void restore_magic _((void *p));
46 assert(SvMAGICAL(sv));
49 mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv);
50 SAVEDESTRUCTOR(restore_magic, mgs);
54 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
64 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
67 SvFLAGS(sv) |= mgs->mgs_flags;
71 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
81 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
82 MGVTBL* vtbl = mg->mg_virtual;
84 if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP))
88 if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || vtbl->svt_clear)
104 save_magic(&mgs, sv);
107 while ((mg = *mgp) != 0) {
108 MGVTBL* vtbl = mg->mg_virtual;
109 if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) {
110 (*vtbl->svt_get)(sv, mg);
111 /* Ignore this magic if it's been deleted */
112 if ((mg == (mgp_valid ? *mgp : SvMAGIC(sv))) &&
113 (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 save_magic(&mgs, 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) {
169 save_magic(&mgs, sv);
170 /* omit MGf_GSKIP -- not changed here */
171 len = (*vtbl->svt_len)(sv, mg);
177 junk = SvPV(sv, len);
189 save_magic(&mgs, sv);
191 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
192 MGVTBL* vtbl = mg->mg_virtual;
193 /* omit GSKIP -- never set here */
195 if (vtbl && vtbl->svt_clear)
196 (*vtbl->svt_clear)(sv, mg);
209 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
210 if (mg->mg_type == type)
217 mg_copy(sv, nsv, key, klen)
225 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
226 if (isUPPER(mg->mg_type)) {
227 sv_magic(nsv, mg->mg_obj, toLOWER(mg->mg_type), key, klen);
240 for (mg = SvMAGIC(sv); mg; mg = moremagic) {
241 MGVTBL* vtbl = mg->mg_virtual;
242 moremagic = mg->mg_moremagic;
243 if (vtbl && vtbl->svt_free)
244 (*vtbl->svt_free)(sv, mg);
245 if (mg->mg_ptr && mg->mg_type != 'g')
247 Safefree(mg->mg_ptr);
248 else if (mg->mg_len == HEf_SVKEY)
249 SvREFCNT_dec((SV*)mg->mg_ptr);
250 if (mg->mg_flags & MGf_REFCOUNTED)
251 SvREFCNT_dec(mg->mg_obj);
258 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
273 switch (*mg->mg_ptr) {
274 case '1': case '2': case '3': case '4':
275 case '5': case '6': case '7': case '8': case '9': case '&':
276 if (curpm && (rx = curpm->op_pmregexp)) {
277 paren = atoi(mg->mg_ptr);
279 if (paren <= rx->nparens &&
280 (s = rx->startp[paren]) &&
281 (t = rx->endp[paren]))
290 if (curpm && (rx = curpm->op_pmregexp)) {
291 paren = rx->lastparen;
297 if (curpm && (rx = curpm->op_pmregexp)) {
298 if ((s = rx->subbeg) && rx->startp[0]) {
299 i = rx->startp[0] - s;
306 if (curpm && (rx = curpm->op_pmregexp)) {
307 if (rx->subend && (s = rx->endp[0])) {
315 return (STRLEN)ofslen;
317 return (STRLEN)orslen;
320 if (!SvPOK(sv) && SvNIOK(sv))
338 switch (*mg->mg_ptr) {
339 case '\001': /* ^A */
340 sv_setsv(sv, bodytarget);
342 case '\004': /* ^D */
343 sv_setiv(sv, (IV)(debug & 32767));
345 case '\005': /* ^E */
348 # include <descrip.h>
349 # include <starlet.h>
351 $DESCRIPTOR(msgdsc,msg);
352 sv_setnv(sv,(double) vaxc$errno);
353 if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1)
354 sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length);
360 sv_setnv(sv, (double)Perl_rc);
361 sv_setpv(sv, os2error(Perl_rc));
363 sv_setnv(sv, (double)errno);
364 sv_setpv(sv, errno ? Strerror(errno) : "");
367 SvNOK_on(sv); /* what a wonderful hack! */
369 case '\006': /* ^F */
370 sv_setiv(sv, (IV)maxsysfd);
372 case '\010': /* ^H */
373 sv_setiv(sv, (IV)hints);
377 sv_setpv(sv, inplace);
379 sv_setsv(sv, &sv_undef);
381 case '\017': /* ^O */
382 sv_setpv(sv, osname);
384 case '\020': /* ^P */
385 sv_setiv(sv, (IV)perldb);
387 case '\024': /* ^T */
389 sv_setnv(sv, basetime);
391 sv_setiv(sv, (IV)basetime);
394 case '\027': /* ^W */
395 sv_setiv(sv, (IV)dowarn);
397 case '1': case '2': case '3': case '4':
398 case '5': case '6': case '7': case '8': case '9': case '&':
399 if (curpm && (rx = curpm->op_pmregexp)) {
400 paren = atoi(GvENAME((GV*)mg->mg_obj));
402 if (paren <= rx->nparens &&
403 (s = rx->startp[paren]) &&
404 (t = rx->endp[paren]))
411 was_tainted = tainted;
416 tainted = was_tainted || rx->exec_tainted;
421 sv_setsv(sv,&sv_undef);
424 if (curpm && (rx = curpm->op_pmregexp)) {
425 paren = rx->lastparen;
429 sv_setsv(sv,&sv_undef);
432 if (curpm && (rx = curpm->op_pmregexp)) {
433 if ((s = rx->subbeg) && rx->startp[0]) {
434 i = rx->startp[0] - s;
438 sv_setsv(sv,&sv_undef);
441 if (curpm && (rx = curpm->op_pmregexp)) {
442 if (rx->subend && (s = rx->endp[0])) {
447 sv_setsv(sv,&sv_undef);
451 if (GvIO(last_in_gv)) {
452 sv_setiv(sv, (IV)IoLINES(GvIO(last_in_gv)));
457 sv_setiv(sv, (IV)STATUS_CURRENT);
458 #ifdef COMPLEX_STATUS
459 LvTARGOFF(sv) = statusvalue;
460 LvTARGLEN(sv) = statusvalue_vms;
464 s = IoTOP_NAME(GvIOp(defoutgv));
468 sv_setpv(sv,GvENAME(defoutgv));
473 s = IoFMT_NAME(GvIOp(defoutgv));
475 s = GvENAME(defoutgv);
480 sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(defoutgv)));
483 sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(defoutgv)));
486 sv_setiv(sv, (IV)IoPAGE(GvIOp(defoutgv)));
494 sv_setiv(sv, (IV)curcop->cop_arybase);
497 sv_setiv(sv, (IV)(IoFLAGS(GvIOp(defoutgv)) & IOf_FLUSH) != 0 );
500 sv_setpvn(sv,ofs,ofslen);
503 sv_setpvn(sv,ors,orslen);
510 sv_setnv(sv, (double)((errno == EVMSERR) ? vaxc$errno : errno));
511 sv_setpv(sv, errno ? Strerror(errno) : "");
514 int saveerrno = errno;
515 sv_setnv(sv, (double)errno);
517 if (errno == errno_isOS2) sv_setpv(sv, os2error(Perl_rc));
520 sv_setpv(sv, errno ? Strerror(errno) : "");
524 SvNOK_on(sv); /* what a wonderful hack! */
527 sv_setiv(sv, (IV)uid);
530 sv_setiv(sv, (IV)euid);
533 sv_setiv(sv, (IV)gid);
534 sv_setpvf(sv, "%Vd", (IV)gid);
537 sv_setiv(sv, (IV)egid);
538 sv_setpvf(sv, "%Vd", (IV)egid);
542 Groups_t gary[NGROUPS];
543 i = getgroups(NGROUPS,gary);
545 sv_catpvf(sv, " %Vd", (IV)gary[i]);
548 SvIOK_on(sv); /* what a wonderful hack! */
559 magic_getuvar(sv, mg)
563 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
565 if (uf && uf->uf_val)
566 (*uf->uf_val)(uf->uf_index, sv);
584 #ifdef DYNAMIC_ENV_FETCH
585 /* We just undefd an environment var. Is a replacement */
586 /* waiting in the wings? */
589 if ((valp = hv_fetch(GvHVn(envgv), ptr, klen, FALSE)))
590 s = SvPV(*valp, len);
594 #if !defined(OS2) && !defined(AMIGAOS) && !defined(_WIN32)
595 /* And you'll never guess what the dog had */
596 /* in its mouth... */
598 MgTAINTEDDIR_off(mg);
600 if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) {
601 char pathbuf[256], eltbuf[256], *cp, *elt = s;
605 do { /* DCL$PATH may be a search list */
606 while (1) { /* as may dev portion of any element */
607 if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) {
608 if ( *(cp+1) == '.' || *(cp+1) == '-' ||
609 cando_by_name(S_IWUSR,0,elt) ) {
614 if ((cp = strchr(elt, ':')) != Nullch)
616 if (my_trnlnm(elt, eltbuf, j++))
622 } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf));
625 if (s && klen == 4 && strEQ(ptr,"PATH")) {
626 char *strend = s + len;
630 s = delimcpy(tokenbuf, tokenbuf + sizeof tokenbuf,
633 if (i >= sizeof tokenbuf /* too long -- assume the worst */
635 || (Stat(tokenbuf, &st) == 0 && (st.st_mode & 2)) ) {
642 #endif /* neither OS2 nor AMIGAOS nor _WIN32 */
648 magic_clearenv(sv,mg)
652 my_setenv(MgPV(mg,na),Nullch);
657 magic_clear_all_env()
659 #if defined(VMS) || defined(WIN32)
660 DIE("'%ENV = @list;' is not implemented on this machine");
664 if (environ == origenviron)
665 New(901, environ, 1, char*);
667 for (i = 0; environ[i]; i++)
668 Safefree(environ[i]);
681 /* Are we fetching a signal entry? */
682 i = whichsig(MgPV(mg,na));
685 sv_setsv(sv,psig_ptr[i]);
687 Sighandler_t sigstate = rsignal_state(i);
689 /* cache state so we don't fetch it again */
690 if(sigstate == SIG_IGN)
691 sv_setpv(sv,"IGNORE");
693 sv_setsv(sv,&sv_undef);
694 psig_ptr[i] = SvREFCNT_inc(sv);
701 magic_clearsig(sv,mg)
706 /* Are we clearing a signal entry? */
707 i = whichsig(MgPV(mg,na));
710 SvREFCNT_dec(psig_ptr[i]);
714 SvREFCNT_dec(psig_name[i]);
732 if (strEQ(s,"__DIE__"))
734 else if (strEQ(s,"__WARN__"))
736 else if (strEQ(s,"__PARSE__"))
739 croak("No such hook: %s", s);
747 i = whichsig(s); /* ...no, a brick */
749 if (dowarn || strEQ(s,"ALARM"))
750 warn("No such signal: SIG%s", s);
753 SvREFCNT_dec(psig_name[i]);
754 SvREFCNT_dec(psig_ptr[i]);
755 psig_ptr[i] = SvREFCNT_inc(sv);
756 SvTEMP_off(sv); /* Make sure it doesn't go away on us */
757 psig_name[i] = newSVpv(s, strlen(s));
758 SvREADONLY_on(psig_name[i]);
760 if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) {
762 (void)rsignal(i, sighandler);
764 *svp = SvREFCNT_inc(sv);
767 s = SvPV_force(sv,na);
768 if (strEQ(s,"IGNORE")) {
770 (void)rsignal(i, SIG_IGN);
774 else if (strEQ(s,"DEFAULT") || !*s) {
776 (void)rsignal(i, SIG_DFL);
782 * We should warn if HINT_STRICT_REFS, but without
783 * access to a known hint bit in a known OP, we can't
784 * tell whether HINT_STRICT_REFS is in force or not.
786 if (!strchr(s,':') && !strchr(s,'\''))
787 sv_setpv(sv, form("main::%s", s));
789 (void)rsignal(i, sighandler);
791 *svp = SvREFCNT_inc(sv);
808 magic_setamagic(sv,mg)
812 /* HV_badAMAGIC_on(Sv_STASH(sv)); */
817 #endif /* OVERLOAD */
820 magic_setnkeys(sv,mg)
825 hv_ksplit((HV*)LvTARG(sv), SvIV(sv));
826 LvTARG(sv) = Nullsv; /* Don't allow a ref to reassign this. */
832 magic_methpack(sv,mg,meth)
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)));
854 if (perl_call_method(meth, G_SCALAR))
855 sv_setsv(sv, *stack_sp--);
867 magic_methpack(sv,mg,"FETCH");
869 mg->mg_flags |= MGf_GSKIP;
885 PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
886 else if (mg->mg_len == HEf_SVKEY)
887 PUSHs((SV*)mg->mg_ptr);
889 else if (mg->mg_type == 'p')
890 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
894 perl_call_method("STORE", G_SCALAR|G_DISCARD);
900 magic_clearpack(sv,mg)
904 return magic_methpack(sv,mg,"DELETE");
907 int magic_wipepack(sv,mg)
917 perl_call_method("CLEAR", G_SCALAR|G_DISCARD);
923 magic_nextpack(sv,mg,key)
929 char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
940 if (perl_call_method(meth, G_SCALAR))
941 sv_setsv(key, *stack_sp--);
949 magic_existspack(sv,mg)
953 return magic_methpack(sv,mg,"EXISTS");
957 magic_setdbline(sv,mg)
968 svp = av_fetch(GvAV(gv),
969 atoi(MgPV(mg,na)), FALSE);
970 if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp)))
973 warn("Can't break at that line\n");
978 magic_getarylen(sv,mg)
982 sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + curcop->cop_arybase);
987 magic_setarylen(sv,mg)
991 av_fill((AV*)mg->mg_obj, SvIV(sv) - curcop->cop_arybase);
1000 SV* lsv = LvTARG(sv);
1002 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) {
1003 mg = mg_find(lsv, 'g');
1004 if (mg && mg->mg_len >= 0) {
1005 sv_setiv(sv, mg->mg_len + curcop->cop_arybase);
1018 SV* lsv = LvTARG(sv);
1024 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv))
1025 mg = mg_find(lsv, 'g');
1029 sv_magic(lsv, (SV*)0, 'g', Nullch, 0);
1030 mg = mg_find(lsv, 'g');
1032 else if (!SvOK(sv)) {
1036 len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv);
1038 pos = SvIV(sv) - curcop->cop_arybase;
1047 mg->mg_flags &= ~MGf_MINMATCH;
1053 magic_getglob(sv,mg)
1057 if (SvFAKE(sv)) { /* FAKE globs can get coerced */
1059 gv_efullname3(sv,((GV*)sv), "*");
1063 gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */
1068 magic_setglob(sv,mg)
1078 if (*s == '*' && s[1])
1080 gv = gv_fetchpv(s,TRUE, SVt_PVGV);
1085 GvGP(sv) = gp_ref(GvGP(gv));
1090 magic_setsubstr(sv,mg)
1095 char *tmps = SvPV(sv,len);
1096 sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len);
1101 magic_gettaint(sv,mg)
1105 TAINT_IF((mg->mg_len & 1) ||
1106 (mg->mg_len & 2) && mg->mg_obj == sv); /* kludge */
1111 magic_settaint(sv,mg)
1116 if (localizing == 1)
1133 do_vecset(sv); /* XXX slurp this routine */
1138 magic_getdefelem(sv,mg)
1143 if (LvTARGLEN(sv)) {
1145 HV* hv = (HV*)LvTARG(sv);
1146 HE* he = hv_fetch_ent(hv, mg->mg_obj, FALSE, 0);
1151 AV* av = (AV*)LvTARG(sv);
1152 if ((I32)LvTARGOFF(sv) <= AvFILL(av))
1153 targ = AvARRAY(av)[LvTARGOFF(sv)];
1155 if (targ && targ != &sv_undef) {
1156 /* somebody else defined it for us */
1157 SvREFCNT_dec(LvTARG(sv));
1158 LvTARG(sv) = SvREFCNT_inc(targ);
1160 SvREFCNT_dec(mg->mg_obj);
1161 mg->mg_obj = Nullsv;
1162 mg->mg_flags &= ~MGf_REFCOUNTED;
1167 sv_setsv(sv, targ ? targ : &sv_undef);
1172 magic_setdefelem(sv,mg)
1179 sv_setsv(LvTARG(sv), sv);
1180 SvSETMAGIC(LvTARG(sv));
1186 magic_freedefelem(sv,mg)
1190 SvREFCNT_dec(LvTARG(sv));
1201 if (!LvTARGLEN(sv) || !(mg = mg_find(sv, 'y')))
1204 HV* hv = (HV*)LvTARG(sv);
1205 HE* he = hv_fetch_ent(hv, mg->mg_obj, TRUE, 0);
1206 if (!he || (value = HeVAL(he)) == &sv_undef)
1207 croak(no_helem, SvPV(mg->mg_obj, na));
1210 AV* av = (AV*)LvTARG(sv);
1211 if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av))
1212 LvTARG(sv) = Nullsv; /* array can't be extended */
1214 SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE);
1215 if (!svp || (value = *svp) == &sv_undef)
1216 croak(no_aelem, (I32)LvTARGOFF(sv));
1219 SvREFCNT_inc(value);
1220 SvREFCNT_dec(LvTARG(sv));
1223 SvREFCNT_dec(mg->mg_obj);
1224 mg->mg_obj = Nullsv;
1225 mg->mg_flags &= ~MGf_REFCOUNTED;
1229 magic_setmglob(sv,mg)
1243 sv_unmagic(sv, 'B');
1253 sv_unmagic(sv, 'f');
1259 magic_setuvar(sv,mg)
1263 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
1265 if (uf && uf->uf_set)
1266 (*uf->uf_set)(uf->uf_index, sv);
1270 #ifdef USE_LOCALE_COLLATE
1272 magic_setcollxfrm(sv,mg)
1277 * René Descartes said "I think not."
1278 * and vanished with a faint plop.
1281 Safefree(mg->mg_ptr);
1287 #endif /* USE_LOCALE_COLLATE */
1297 switch (*mg->mg_ptr) {
1298 case '\001': /* ^A */
1299 sv_setsv(bodytarget, sv);
1301 case '\004': /* ^D */
1302 debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000;
1303 DEBUG_x(dump_all());
1305 case '\005': /* ^E */
1307 set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1309 /* will anyone ever use this? */
1310 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4);
1313 case '\006': /* ^F */
1314 maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1316 case '\010': /* ^H */
1317 hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1323 inplace = savepv(SvPV(sv,na));
1327 case '\017': /* ^O */
1331 osname = savepv(SvPV(sv,na));
1335 case '\020': /* ^P */
1336 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1345 case '\024': /* ^T */
1347 basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv));
1349 basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1352 case '\027': /* ^W */
1353 dowarn = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1357 if (localizing == 1)
1358 save_sptr((SV**)&last_in_gv);
1360 else if (SvOK(sv) && GvIO(last_in_gv))
1361 IoLINES(GvIOp(last_in_gv)) = (long)SvIV(sv);
1364 Safefree(IoTOP_NAME(GvIOp(defoutgv)));
1365 IoTOP_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na));
1366 IoTOP_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1369 Safefree(IoFMT_NAME(GvIOp(defoutgv)));
1370 IoFMT_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na));
1371 IoFMT_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1374 IoPAGE_LEN(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1377 IoLINES_LEFT(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1378 if (IoLINES_LEFT(GvIOp(defoutgv)) < 0L)
1379 IoLINES_LEFT(GvIOp(defoutgv)) = 0L;
1382 IoPAGE(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1386 IO *io = GvIOp(defoutgv);
1387 if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0)
1388 IoFLAGS(io) &= ~IOf_FLUSH;
1390 if (!(IoFLAGS(io) & IOf_FLUSH)) {
1391 PerlIO *ofp = IoOFP(io);
1393 (void)PerlIO_flush(ofp);
1394 IoFLAGS(io) |= IOf_FLUSH;
1400 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1401 multiline = (i != 0);
1407 rs = SvREFCNT_inc(nrs);
1412 if (SvOK(sv) || SvGMAGICAL(sv))
1413 ors = savepv(SvPV(sv,orslen));
1422 ofs = savepv(SvPV(sv, ofslen));
1427 ofmt = savepv(SvPV(sv,na));
1430 compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1433 #ifdef COMPLEX_STATUS
1434 if (localizing == 2) {
1435 statusvalue = LvTARGOFF(sv);
1436 statusvalue_vms = LvTARGLEN(sv);
1440 #ifdef VMSISH_STATUS
1442 STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)));
1445 STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1448 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv),
1449 (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno);
1452 uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1454 delaymagic |= DM_RUID;
1455 break; /* don't do magic till later */
1458 (void)setruid((Uid_t)uid);
1461 (void)setreuid((Uid_t)uid, (Uid_t)-1);
1463 #ifdef HAS_SETRESUID
1464 (void)setresuid((Uid_t)uid, (Uid_t)-1, (Uid_t)-1);
1466 if (uid == euid) /* special case $< = $> */
1469 uid = (I32)getuid();
1470 croak("setruid() not implemented");
1475 uid = (I32)getuid();
1476 tainting |= (uid && (euid != uid || egid != gid));
1479 euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1481 delaymagic |= DM_EUID;
1482 break; /* don't do magic till later */
1485 (void)seteuid((Uid_t)euid);
1488 (void)setreuid((Uid_t)-1, (Uid_t)euid);
1490 #ifdef HAS_SETRESUID
1491 (void)setresuid((Uid_t)-1, (Uid_t)euid, (Uid_t)-1);
1493 if (euid == uid) /* special case $> = $< */
1496 euid = (I32)geteuid();
1497 croak("seteuid() not implemented");
1502 euid = (I32)geteuid();
1503 tainting |= (uid && (euid != uid || egid != gid));
1506 gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1508 delaymagic |= DM_RGID;
1509 break; /* don't do magic till later */
1512 (void)setrgid((Gid_t)gid);
1515 (void)setregid((Gid_t)gid, (Gid_t)-1);
1517 #ifdef HAS_SETRESGID
1518 (void)setresgid((Gid_t)gid, (Gid_t)-1, (Gid_t) 1);
1520 if (gid == egid) /* special case $( = $) */
1523 gid = (I32)getgid();
1524 croak("setrgid() not implemented");
1529 gid = (I32)getgid();
1530 tainting |= (uid && (euid != uid || egid != gid));
1533 #ifdef HAS_SETGROUPS
1535 char *p = SvPV(sv, na);
1536 Groups_t gary[NGROUPS];
1538 SET_NUMERIC_STANDARD();
1541 egid = I_V(atof(p));
1542 for (i = 0; i < NGROUPS; ++i) {
1543 while (*p && !isSPACE(*p))
1549 gary[i] = I_V(atof(p));
1552 (void)setgroups(i, gary);
1554 #else /* HAS_SETGROUPS */
1555 egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1556 #endif /* HAS_SETGROUPS */
1558 delaymagic |= DM_EGID;
1559 break; /* don't do magic till later */
1562 (void)setegid((Gid_t)egid);
1565 (void)setregid((Gid_t)-1, (Gid_t)egid);
1567 #ifdef HAS_SETRESGID
1568 (void)setresgid((Gid_t)-1, (Gid_t)egid, (Gid_t)-1);
1570 if (egid == gid) /* special case $) = $( */
1573 egid = (I32)getegid();
1574 croak("setegid() not implemented");
1579 egid = (I32)getegid();
1580 tainting |= (uid && (euid != uid || egid != gid));
1583 chopset = SvPV_force(sv,na);
1589 /* See if all the arguments are contiguous in memory */
1590 for (i = 1; i < origargc; i++) {
1591 if (origargv[i] == s + 1)
1592 s += strlen(++s); /* this one is ok too */
1594 /* can grab env area too? */
1595 if (origenviron && origenviron[0] == s + 1) {
1596 my_setenv("NoNe SuCh", Nullch);
1597 /* force copy of environment */
1598 for (i = 0; origenviron[i]; i++)
1599 if (origenviron[i] == s + 1)
1602 origalen = s - origargv[0];
1604 s = SvPV_force(sv,len);
1606 if (i >= origalen) {
1610 Copy(s, origargv[0], i, char);
1613 Copy(s, origargv[0], i, char);
1616 while (++i < origalen)
1619 for (i = 1; i < origargc; i++)
1620 origargv[i] = Nullch;
1631 register char **sigv;
1633 for (sigv = sig_name+1; *sigv; sigv++)
1634 if (strEQ(sig,*sigv))
1635 return sig_num[sigv - sig_name];
1637 if (strEQ(sig,"CHLD"))
1641 if (strEQ(sig,"CLD"))
1659 die("Signal SIG%s received, but no signal handler set.\n",
1662 cv = sv_2cv(psig_ptr[sig],&st,&gv,TRUE);
1663 if (!cv || !CvROOT(cv)) {
1665 warn("SIG%s handler \"%s\" not defined.\n",
1666 sig_name[sig], GvENAME(gv) );
1670 oldstack = curstack;
1671 if (curstack != signalstack)
1672 AvFILL(signalstack) = 0;
1673 SWITCHSTACK(curstack, signalstack);
1676 sv = SvREFCNT_inc(psig_name[sig]);
1678 sv = sv_newmortal();
1679 sv_setpv(sv,sig_name[sig]);
1685 perl_call_sv((SV*)cv, G_DISCARD);
1687 SWITCHSTACK(signalstack, oldstack);