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)));
459 sv_setiv(sv, (IV)STATUS_CURRENT);
460 #ifdef COMPLEX_STATUS
461 LvTARGOFF(sv) = statusvalue;
462 LvTARGLEN(sv) = statusvalue_vms;
467 s = IoTOP_NAME(GvIOp(defoutgv));
471 sv_setpv(sv,GvENAME(defoutgv));
476 s = IoFMT_NAME(GvIOp(defoutgv));
478 s = GvENAME(defoutgv);
483 sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(defoutgv)));
486 sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(defoutgv)));
489 sv_setiv(sv, (IV)IoPAGE(GvIOp(defoutgv)));
497 WITH_THR(sv_setiv(sv, (IV)curcop->cop_arybase));
500 sv_setiv(sv, (IV)(IoFLAGS(GvIOp(defoutgv)) & IOf_FLUSH) != 0 );
503 sv_setpvn(sv,ofs,ofslen);
506 sv_setpvn(sv,ors,orslen);
513 sv_setnv(sv, (double)((errno == EVMSERR) ? vaxc$errno : errno));
514 sv_setpv(sv, errno ? Strerror(errno) : "");
517 int saveerrno = errno;
518 sv_setnv(sv, (double)errno);
520 if (errno == errno_isOS2) sv_setpv(sv, os2error(Perl_rc));
523 sv_setpv(sv, errno ? Strerror(errno) : "");
527 SvNOK_on(sv); /* what a wonderful hack! */
530 sv_setiv(sv, (IV)uid);
533 sv_setiv(sv, (IV)euid);
536 sv_setiv(sv, (IV)gid);
537 sv_setpvf(sv, "%Vd", (IV)gid);
540 sv_setiv(sv, (IV)egid);
541 sv_setpvf(sv, "%Vd", (IV)egid);
545 Groups_t gary[NGROUPS];
546 i = getgroups(NGROUPS,gary);
548 sv_catpvf(sv, " %Vd", (IV)gary[i]);
551 SvIOK_on(sv); /* what a wonderful hack! */
562 magic_getuvar(sv, mg)
566 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
568 if (uf && uf->uf_val)
569 (*uf->uf_val)(uf->uf_index, sv);
587 #ifdef DYNAMIC_ENV_FETCH
588 /* We just undefd an environment var. Is a replacement */
589 /* waiting in the wings? */
592 if ((valp = hv_fetch(GvHVn(envgv), ptr, klen, FALSE)))
593 s = SvPV(*valp, len);
597 #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32)
598 /* And you'll never guess what the dog had */
599 /* in its mouth... */
601 MgTAINTEDDIR_off(mg);
603 if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) {
604 char pathbuf[256], eltbuf[256], *cp, *elt = s;
608 do { /* DCL$PATH may be a search list */
609 while (1) { /* as may dev portion of any element */
610 if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) {
611 if ( *(cp+1) == '.' || *(cp+1) == '-' ||
612 cando_by_name(S_IWUSR,0,elt) ) {
617 if ((cp = strchr(elt, ':')) != Nullch)
619 if (my_trnlnm(elt, eltbuf, j++))
625 } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf));
628 if (s && klen == 4 && strEQ(ptr,"PATH")) {
629 char *strend = s + len;
634 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf,
637 if (i >= sizeof tmpbuf /* too long -- assume the worst */
639 || (Stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) {
646 #endif /* neither OS2 nor AMIGAOS nor WIN32 */
652 magic_clearenv(sv,mg)
656 my_setenv(MgPV(mg,na),Nullch);
661 magic_clear_all_env(sv,mg)
666 die("Can't make list assignment to %%ENV on this system");
669 char *envv = GetEnvironmentStrings();
673 char *end = strchr(cur,'=');
674 if (end && end != cur) {
676 my_setenv(cur,Nullch);
678 cur += strlen(end+1)+1;
680 else if ((len = strlen(cur)))
683 FreeEnvironmentStrings(envv);
687 if (environ == origenviron)
688 New(901, environ, 1, char*);
690 for (i = 0; environ[i]; i++)
691 Safefree(environ[i]);
705 /* Are we fetching a signal entry? */
706 i = whichsig(MgPV(mg,na));
709 sv_setsv(sv,psig_ptr[i]);
711 dTHR; /* just for SvREFCNT_inc */
712 Sighandler_t sigstate = rsignal_state(i);
714 /* cache state so we don't fetch it again */
715 if(sigstate == SIG_IGN)
716 sv_setpv(sv,"IGNORE");
718 sv_setsv(sv,&sv_undef);
719 psig_ptr[i] = SvREFCNT_inc(sv);
726 magic_clearsig(sv,mg)
731 /* Are we clearing a signal entry? */
732 i = whichsig(MgPV(mg,na));
735 SvREFCNT_dec(psig_ptr[i]);
739 SvREFCNT_dec(psig_name[i]);
758 if (strEQ(s,"__DIE__"))
760 else if (strEQ(s,"__WARN__"))
762 else if (strEQ(s,"__PARSE__"))
765 croak("No such hook: %s", s);
773 i = whichsig(s); /* ...no, a brick */
775 if (dowarn || strEQ(s,"ALARM"))
776 warn("No such signal: SIG%s", s);
779 SvREFCNT_dec(psig_name[i]);
780 SvREFCNT_dec(psig_ptr[i]);
781 psig_ptr[i] = SvREFCNT_inc(sv);
782 SvTEMP_off(sv); /* Make sure it doesn't go away on us */
783 psig_name[i] = newSVpv(s, strlen(s));
784 SvREADONLY_on(psig_name[i]);
786 if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) {
788 (void)rsignal(i, sighandlerp);
790 *svp = SvREFCNT_inc(sv);
793 s = SvPV_force(sv,na);
794 if (strEQ(s,"IGNORE")) {
796 (void)rsignal(i, SIG_IGN);
800 else if (strEQ(s,"DEFAULT") || !*s) {
802 (void)rsignal(i, SIG_DFL);
808 * We should warn if HINT_STRICT_REFS, but without
809 * access to a known hint bit in a known OP, we can't
810 * tell whether HINT_STRICT_REFS is in force or not.
812 if (!strchr(s,':') && !strchr(s,'\''))
813 sv_setpv(sv, form("main::%s", s));
815 (void)rsignal(i, sighandlerp);
817 *svp = SvREFCNT_inc(sv);
834 magic_setamagic(sv,mg)
838 /* HV_badAMAGIC_on(Sv_STASH(sv)); */
843 #endif /* OVERLOAD */
846 magic_setnkeys(sv,mg)
851 hv_ksplit((HV*)LvTARG(sv), SvIV(sv));
852 LvTARG(sv) = Nullsv; /* Don't allow a ref to reassign this. */
858 magic_methpack(sv,mg,meth)
873 PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
874 else if (mg->mg_len == HEf_SVKEY)
875 PUSHs((SV*)mg->mg_ptr);
877 else if (mg->mg_type == 'p')
878 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
881 if (perl_call_method(meth, G_SCALAR))
882 sv_setsv(sv, *stack_sp--);
894 magic_methpack(sv,mg,"FETCH");
896 mg->mg_flags |= MGf_GSKIP;
913 PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
914 else if (mg->mg_len == HEf_SVKEY)
915 PUSHs((SV*)mg->mg_ptr);
917 else if (mg->mg_type == 'p')
918 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
922 perl_call_method("STORE", G_SCALAR|G_DISCARD);
928 magic_clearpack(sv,mg)
932 return magic_methpack(sv,mg,"DELETE");
935 int magic_wipepack(sv,mg)
946 perl_call_method("CLEAR", G_SCALAR|G_DISCARD);
952 magic_nextpack(sv,mg,key)
959 char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
970 if (perl_call_method(meth, G_SCALAR))
971 sv_setsv(key, *stack_sp--);
979 magic_existspack(sv,mg)
983 return magic_methpack(sv,mg,"EXISTS");
987 magic_setdbline(sv,mg)
999 svp = av_fetch(GvAV(gv),
1000 atoi(MgPV(mg,na)), FALSE);
1001 if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp)))
1004 warn("Can't break at that line\n");
1009 magic_getarylen(sv,mg)
1014 sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + curcop->cop_arybase);
1019 magic_setarylen(sv,mg)
1024 av_fill((AV*)mg->mg_obj, SvIV(sv) - curcop->cop_arybase);
1033 SV* lsv = LvTARG(sv);
1035 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) {
1036 mg = mg_find(lsv, 'g');
1037 if (mg && mg->mg_len >= 0) {
1039 sv_setiv(sv, mg->mg_len + curcop->cop_arybase);
1052 SV* lsv = LvTARG(sv);
1058 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv))
1059 mg = mg_find(lsv, 'g');
1063 sv_magic(lsv, (SV*)0, 'g', Nullch, 0);
1064 mg = mg_find(lsv, 'g');
1066 else if (!SvOK(sv)) {
1070 len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv);
1072 WITH_THR(pos = SvIV(sv) - curcop->cop_arybase);
1081 mg->mg_flags &= ~MGf_MINMATCH;
1087 magic_getglob(sv,mg)
1091 if (SvFAKE(sv)) { /* FAKE globs can get coerced */
1093 gv_efullname3(sv,((GV*)sv), "*");
1097 gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */
1102 magic_setglob(sv,mg)
1112 if (*s == '*' && s[1])
1114 gv = gv_fetchpv(s,TRUE, SVt_PVGV);
1119 GvGP(sv) = gp_ref(GvGP(gv));
1124 magic_setsubstr(sv,mg)
1129 char *tmps = SvPV(sv,len);
1130 sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len);
1135 magic_gettaint(sv,mg)
1139 TAINT_IF((mg->mg_len & 1) ||
1140 (mg->mg_len & 2) && mg->mg_obj == sv); /* kludge */
1145 magic_settaint(sv,mg)
1151 if (localizing == 1)
1168 do_vecset(sv); /* XXX slurp this routine */
1173 magic_getdefelem(sv,mg)
1178 if (LvTARGLEN(sv)) {
1180 HV* hv = (HV*)LvTARG(sv);
1181 HE* he = hv_fetch_ent(hv, mg->mg_obj, FALSE, 0);
1186 AV* av = (AV*)LvTARG(sv);
1187 if ((I32)LvTARGOFF(sv) <= AvFILL(av))
1188 targ = AvARRAY(av)[LvTARGOFF(sv)];
1190 if (targ && targ != &sv_undef) {
1191 dTHR; /* just for SvREFCNT_dec */
1192 /* somebody else defined it for us */
1193 SvREFCNT_dec(LvTARG(sv));
1194 LvTARG(sv) = SvREFCNT_inc(targ);
1196 SvREFCNT_dec(mg->mg_obj);
1197 mg->mg_obj = Nullsv;
1198 mg->mg_flags &= ~MGf_REFCOUNTED;
1203 sv_setsv(sv, targ ? targ : &sv_undef);
1208 magic_setdefelem(sv,mg)
1215 sv_setsv(LvTARG(sv), sv);
1216 SvSETMAGIC(LvTARG(sv));
1222 magic_freedefelem(sv,mg)
1226 SvREFCNT_dec(LvTARG(sv));
1234 dTHR; /* just for SvREFCNT_inc and SvREFCNT_dec*/
1238 if (!LvTARGLEN(sv) || !(mg = mg_find(sv, 'y')))
1241 HV* hv = (HV*)LvTARG(sv);
1242 HE* he = hv_fetch_ent(hv, mg->mg_obj, TRUE, 0);
1243 if (!he || (value = HeVAL(he)) == &sv_undef)
1244 croak(no_helem, SvPV(mg->mg_obj, na));
1247 AV* av = (AV*)LvTARG(sv);
1248 if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av))
1249 LvTARG(sv) = Nullsv; /* array can't be extended */
1251 SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE);
1252 if (!svp || (value = *svp) == &sv_undef)
1253 croak(no_aelem, (I32)LvTARGOFF(sv));
1256 (void)SvREFCNT_inc(value);
1257 SvREFCNT_dec(LvTARG(sv));
1260 SvREFCNT_dec(mg->mg_obj);
1261 mg->mg_obj = Nullsv;
1262 mg->mg_flags &= ~MGf_REFCOUNTED;
1266 magic_setmglob(sv,mg)
1280 sv_unmagic(sv, 'B');
1290 sv_unmagic(sv, 'f');
1296 magic_setuvar(sv,mg)
1300 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
1302 if (uf && uf->uf_set)
1303 (*uf->uf_set)(uf->uf_index, sv);
1307 #ifdef USE_LOCALE_COLLATE
1309 magic_setcollxfrm(sv,mg)
1314 * René Descartes said "I think not."
1315 * and vanished with a faint plop.
1318 Safefree(mg->mg_ptr);
1324 #endif /* USE_LOCALE_COLLATE */
1335 switch (*mg->mg_ptr) {
1336 case '\001': /* ^A */
1337 sv_setsv(bodytarget, sv);
1339 case '\004': /* ^D */
1340 debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000;
1341 DEBUG_x(dump_all());
1343 case '\005': /* ^E */
1345 set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1347 /* will anyone ever use this? */
1348 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4);
1351 case '\006': /* ^F */
1352 maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1354 case '\010': /* ^H */
1355 hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1361 inplace = savepv(SvPV(sv,na));
1365 case '\017': /* ^O */
1369 osname = savepv(SvPV(sv,na));
1373 case '\020': /* ^P */
1374 perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1376 case '\024': /* ^T */
1378 basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv));
1380 basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1383 case '\027': /* ^W */
1384 dowarn = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1388 if (localizing == 1)
1389 save_sptr((SV**)&last_in_gv);
1391 else if (SvOK(sv) && GvIO(last_in_gv))
1392 IoLINES(GvIOp(last_in_gv)) = (long)SvIV(sv);
1395 Safefree(IoTOP_NAME(GvIOp(defoutgv)));
1396 IoTOP_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na));
1397 IoTOP_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1400 Safefree(IoFMT_NAME(GvIOp(defoutgv)));
1401 IoFMT_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na));
1402 IoFMT_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1405 IoPAGE_LEN(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1408 IoLINES_LEFT(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1409 if (IoLINES_LEFT(GvIOp(defoutgv)) < 0L)
1410 IoLINES_LEFT(GvIOp(defoutgv)) = 0L;
1413 IoPAGE(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1417 IO *io = GvIOp(defoutgv);
1418 if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0)
1419 IoFLAGS(io) &= ~IOf_FLUSH;
1421 if (!(IoFLAGS(io) & IOf_FLUSH)) {
1422 PerlIO *ofp = IoOFP(io);
1424 (void)PerlIO_flush(ofp);
1425 IoFLAGS(io) |= IOf_FLUSH;
1431 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1432 multiline = (i != 0);
1438 rs = SvREFCNT_inc(nrs);
1443 if (SvOK(sv) || SvGMAGICAL(sv))
1444 ors = savepv(SvPV(sv,orslen));
1453 ofs = savepv(SvPV(sv, ofslen));
1458 ofmt = savepv(SvPV(sv,na));
1461 compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1464 #ifdef COMPLEX_STATUS
1465 if (localizing == 2) {
1466 statusvalue = LvTARGOFF(sv);
1467 statusvalue_vms = LvTARGLEN(sv);
1471 #ifdef VMSISH_STATUS
1473 STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)));
1476 STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1479 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv),
1480 (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno);
1483 uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1485 delaymagic |= DM_RUID;
1486 break; /* don't do magic till later */
1489 (void)setruid((Uid_t)uid);
1492 (void)setreuid((Uid_t)uid, (Uid_t)-1);
1494 #ifdef HAS_SETRESUID
1495 (void)setresuid((Uid_t)uid, (Uid_t)-1, (Uid_t)-1);
1497 if (uid == euid) /* special case $< = $> */
1500 uid = (I32)getuid();
1501 croak("setruid() not implemented");
1506 uid = (I32)getuid();
1507 tainting |= (uid && (euid != uid || egid != gid));
1510 euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1512 delaymagic |= DM_EUID;
1513 break; /* don't do magic till later */
1516 (void)seteuid((Uid_t)euid);
1519 (void)setreuid((Uid_t)-1, (Uid_t)euid);
1521 #ifdef HAS_SETRESUID
1522 (void)setresuid((Uid_t)-1, (Uid_t)euid, (Uid_t)-1);
1524 if (euid == uid) /* special case $> = $< */
1527 euid = (I32)geteuid();
1528 croak("seteuid() not implemented");
1533 euid = (I32)geteuid();
1534 tainting |= (uid && (euid != uid || egid != gid));
1537 gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1539 delaymagic |= DM_RGID;
1540 break; /* don't do magic till later */
1543 (void)setrgid((Gid_t)gid);
1546 (void)setregid((Gid_t)gid, (Gid_t)-1);
1548 #ifdef HAS_SETRESGID
1549 (void)setresgid((Gid_t)gid, (Gid_t)-1, (Gid_t) 1);
1551 if (gid == egid) /* special case $( = $) */
1554 gid = (I32)getgid();
1555 croak("setrgid() not implemented");
1560 gid = (I32)getgid();
1561 tainting |= (uid && (euid != uid || egid != gid));
1564 #ifdef HAS_SETGROUPS
1566 char *p = SvPV(sv, na);
1567 Groups_t gary[NGROUPS];
1569 SET_NUMERIC_STANDARD();
1572 egid = I_V(atof(p));
1573 for (i = 0; i < NGROUPS; ++i) {
1574 while (*p && !isSPACE(*p))
1580 gary[i] = I_V(atof(p));
1583 (void)setgroups(i, gary);
1585 #else /* HAS_SETGROUPS */
1586 egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1587 #endif /* HAS_SETGROUPS */
1589 delaymagic |= DM_EGID;
1590 break; /* don't do magic till later */
1593 (void)setegid((Gid_t)egid);
1596 (void)setregid((Gid_t)-1, (Gid_t)egid);
1598 #ifdef HAS_SETRESGID
1599 (void)setresgid((Gid_t)-1, (Gid_t)egid, (Gid_t)-1);
1601 if (egid == gid) /* special case $) = $( */
1604 egid = (I32)getegid();
1605 croak("setegid() not implemented");
1610 egid = (I32)getegid();
1611 tainting |= (uid && (euid != uid || egid != gid));
1614 chopset = SvPV_force(sv,na);
1620 /* See if all the arguments are contiguous in memory */
1621 for (i = 1; i < origargc; i++) {
1622 if (origargv[i] == s + 1)
1623 s += strlen(++s); /* this one is ok too */
1625 /* can grab env area too? */
1626 if (origenviron && origenviron[0] == s + 1) {
1627 my_setenv("NoNe SuCh", Nullch);
1628 /* force copy of environment */
1629 for (i = 0; origenviron[i]; i++)
1630 if (origenviron[i] == s + 1)
1633 origalen = s - origargv[0];
1635 s = SvPV_force(sv,len);
1637 if (i >= origalen) {
1641 Copy(s, origargv[0], i, char);
1644 Copy(s, origargv[0], i, char);
1647 while (++i < origalen)
1650 for (i = 1; i < origargc; i++)
1651 origargv[i] = Nullch;
1660 magic_mutexfree(sv, mg)
1665 DEBUG_L(PerlIO_printf(PerlIO_stderr(), "0x%lx: magic_mutexfree 0x%lx\n",
1666 (unsigned long)thr, (unsigned long)sv);)
1668 croak("panic: magic_mutexfree");
1669 MUTEX_DESTROY(MgMUTEXP(mg));
1670 COND_DESTROY(MgCONDP(mg));
1673 #endif /* USE_THREADS */
1679 register char **sigv;
1681 for (sigv = sig_name+1; *sigv; sigv++)
1682 if (strEQ(sig,*sigv))
1683 return sig_num[sigv - sig_name];
1685 if (strEQ(sig,"CHLD"))
1689 if (strEQ(sig,"CLD"))
1698 unwind_handler_stack(p)
1702 U32 flags = *(U32*)p;
1705 savestack_ix -= 5; /* Unprotect save in progress. */
1706 /* cxstack_ix-- Not needed, die already unwound it. */
1708 SvREFCNT_dec(sig_sv);
1724 I32 o_save_i = savestack_ix, type;
1728 if (savestack_ix + 15 <= savestack_max)
1730 if (cxstack_ix < cxstack_max - 2)
1732 if (markstack_ptr < markstack_max - 2)
1734 if (retstack_ix < retstack_max - 2)
1736 if (scopestack_ix < scopestack_max - 3)
1739 if (flags & 2) { /* POPBLOCK may decrease cxstack too early. */
1740 cxstack_ix++; /* Protect from overwrite. */
1741 cx = &cxstack[cxstack_ix];
1742 type = cx->cx_type; /* Can be during partial write. */
1743 cx->cx_type = CXt_NULL; /* Make it safe for unwind. */
1746 die("Signal SIG%s received, but no signal handler set.\n",
1749 /* Max number of items pushed there is 3*n or 4. We cannot fix
1750 infinity, so we fix 4 (in fact 5): */
1752 savestack_ix += 5; /* Protect save in progress. */
1753 o_save_i = savestack_ix;
1754 SAVEDESTRUCTOR(unwind_handler_stack, (void*)&flags);
1757 markstack_ptr++; /* Protect mark. */
1760 retstack[retstack_ix] = NULL;
1764 /* sv_2cv is too complicated, try a simpler variant first: */
1765 if (!SvROK(psig_ptr[sig]) || !(cv = (CV*)SvRV(psig_ptr[sig]))
1766 || SvTYPE(cv) != SVt_PVCV)
1767 cv = sv_2cv(psig_ptr[sig],&st,&gv,TRUE);
1769 if (!cv || !CvROOT(cv)) {
1771 warn("SIG%s handler \"%s\" not defined.\n",
1772 sig_name[sig], GvENAME(gv) );
1776 oldstack = curstack;
1777 if (curstack != signalstack)
1778 AvFILL(signalstack) = 0;
1779 SWITCHSTACK(curstack, signalstack);
1781 if(psig_name[sig]) {
1782 sv = SvREFCNT_inc(psig_name[sig]);
1786 sv = sv_newmortal();
1787 sv_setpv(sv,sig_name[sig]);
1793 perl_call_sv((SV*)cv, G_DISCARD);
1795 SWITCHSTACK(signalstack, oldstack);
1797 savestack_ix -= 8; /* Unprotect save in progress. */
1799 cxstack[cxstack_ix].cx_type = type;
1810 op = myop; /* Apparently not needed... */
1812 Sv = tSv; /* Restore global temporaries. */