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 if (!(_emx_env & 0x200)) { /* Under DOS */
361 sv_setnv(sv, (double)errno);
362 sv_setpv(sv, errno ? Strerror(errno) : "");
364 if (errno != errno_isOS2)
365 Perl_rc = _syserrno();
366 sv_setnv(sv, (double)Perl_rc);
367 sv_setpv(sv, os2error(Perl_rc));
370 sv_setnv(sv, (double)errno);
371 sv_setpv(sv, errno ? Strerror(errno) : "");
374 SvNOK_on(sv); /* what a wonderful hack! */
376 case '\006': /* ^F */
377 sv_setiv(sv, (IV)maxsysfd);
379 case '\010': /* ^H */
380 sv_setiv(sv, (IV)hints);
384 sv_setpv(sv, inplace);
386 sv_setsv(sv, &sv_undef);
388 case '\017': /* ^O */
389 sv_setpv(sv, osname);
391 case '\020': /* ^P */
392 sv_setiv(sv, (IV)perldb);
394 case '\023': /* ^S */
397 if (lex_state != LEX_NOTPARSING)
405 case '\024': /* ^T */
407 sv_setnv(sv, basetime);
409 sv_setiv(sv, (IV)basetime);
412 case '\027': /* ^W */
413 sv_setiv(sv, (IV)dowarn);
415 case '1': case '2': case '3': case '4':
416 case '5': case '6': case '7': case '8': case '9': case '&':
417 if (curpm && (rx = curpm->op_pmregexp)) {
418 paren = atoi(GvENAME((GV*)mg->mg_obj));
420 if (paren <= rx->nparens &&
421 (s = rx->startp[paren]) &&
422 (t = rx->endp[paren]))
429 was_tainted = tainted;
434 tainted = was_tainted || rx->exec_tainted;
439 sv_setsv(sv,&sv_undef);
442 if (curpm && (rx = curpm->op_pmregexp)) {
443 paren = rx->lastparen;
447 sv_setsv(sv,&sv_undef);
450 if (curpm && (rx = curpm->op_pmregexp)) {
451 if ((s = rx->subbeg) && rx->startp[0]) {
452 i = rx->startp[0] - s;
456 sv_setsv(sv,&sv_undef);
459 if (curpm && (rx = curpm->op_pmregexp)) {
460 if (rx->subend && (s = rx->endp[0])) {
465 sv_setsv(sv,&sv_undef);
469 if (GvIO(last_in_gv)) {
470 sv_setiv(sv, (IV)IoLINES(GvIO(last_in_gv)));
477 sv_setiv(sv, (IV)STATUS_CURRENT);
478 #ifdef COMPLEX_STATUS
479 LvTARGOFF(sv) = statusvalue;
480 LvTARGLEN(sv) = statusvalue_vms;
485 s = IoTOP_NAME(GvIOp(defoutgv));
489 sv_setpv(sv,GvENAME(defoutgv));
494 s = IoFMT_NAME(GvIOp(defoutgv));
496 s = GvENAME(defoutgv);
501 sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(defoutgv)));
504 sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(defoutgv)));
507 sv_setiv(sv, (IV)IoPAGE(GvIOp(defoutgv)));
515 WITH_THR(sv_setiv(sv, (IV)curcop->cop_arybase));
518 sv_setiv(sv, (IV)(IoFLAGS(GvIOp(defoutgv)) & IOf_FLUSH) != 0 );
521 sv_setpvn(sv,ofs,ofslen);
524 sv_setpvn(sv,ors,orslen);
531 sv_setnv(sv, (double)((errno == EVMSERR) ? vaxc$errno : errno));
532 sv_setpv(sv, errno ? Strerror(errno) : "");
535 int saveerrno = errno;
536 sv_setnv(sv, (double)errno);
538 if (errno == errno_isOS2) sv_setpv(sv, os2error(Perl_rc));
541 sv_setpv(sv, errno ? Strerror(errno) : "");
545 SvNOK_on(sv); /* what a wonderful hack! */
548 sv_setiv(sv, (IV)uid);
551 sv_setiv(sv, (IV)euid);
554 sv_setiv(sv, (IV)gid);
555 sv_setpvf(sv, "%Vd", (IV)gid);
558 sv_setiv(sv, (IV)egid);
559 sv_setpvf(sv, "%Vd", (IV)egid);
563 Groups_t gary[NGROUPS];
564 i = getgroups(NGROUPS,gary);
566 sv_catpvf(sv, " %Vd", (IV)gary[i]);
569 SvIOK_on(sv); /* what a wonderful hack! */
580 magic_getuvar(sv, mg)
584 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
586 if (uf && uf->uf_val)
587 (*uf->uf_val)(uf->uf_index, sv);
605 #ifdef DYNAMIC_ENV_FETCH
606 /* We just undefd an environment var. Is a replacement */
607 /* waiting in the wings? */
610 if ((valp = hv_fetch(GvHVn(envgv), ptr, klen, FALSE)))
611 s = SvPV(*valp, len);
615 #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32)
616 /* And you'll never guess what the dog had */
617 /* in its mouth... */
619 MgTAINTEDDIR_off(mg);
621 if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) {
622 char pathbuf[256], eltbuf[256], *cp, *elt = s;
626 do { /* DCL$PATH may be a search list */
627 while (1) { /* as may dev portion of any element */
628 if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) {
629 if ( *(cp+1) == '.' || *(cp+1) == '-' ||
630 cando_by_name(S_IWUSR,0,elt) ) {
635 if ((cp = strchr(elt, ':')) != Nullch)
637 if (my_trnlnm(elt, eltbuf, j++))
643 } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf));
646 if (s && klen == 4 && strEQ(ptr,"PATH")) {
647 char *strend = s + len;
652 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf,
655 if (i >= sizeof tmpbuf /* too long -- assume the worst */
657 || (Stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) {
664 #endif /* neither OS2 nor AMIGAOS nor WIN32 */
670 magic_clearenv(sv,mg)
674 my_setenv(MgPV(mg,na),Nullch);
679 magic_set_all_env(sv,mg)
684 die("Can't make list assignment to %%ENV on this system");
689 magic_clear_all_env(sv,mg);
690 hv_iterinit((HV*)sv);
691 while (entry = hv_iternext((HV*)sv)) {
693 my_setenv(hv_iterkey(entry, &keylen),
694 SvPV(hv_iterval((HV*)sv, entry), na));
702 magic_clear_all_env(sv,mg)
707 die("Can't make list assignment to %%ENV on this system");
710 char *envv = GetEnvironmentStrings();
714 char *end = strchr(cur,'=');
715 if (end && end != cur) {
717 my_setenv(cur,Nullch);
719 cur += strlen(end+1)+1;
721 else if ((len = strlen(cur)))
724 FreeEnvironmentStrings(envv);
728 if (environ == origenviron)
729 New(901, environ, 1, char*);
731 for (i = 0; environ[i]; i++)
732 Safefree(environ[i]);
746 /* Are we fetching a signal entry? */
747 i = whichsig(MgPV(mg,na));
750 sv_setsv(sv,psig_ptr[i]);
752 dTHR; /* just for SvREFCNT_inc */
753 Sighandler_t sigstate = rsignal_state(i);
755 /* cache state so we don't fetch it again */
756 if(sigstate == SIG_IGN)
757 sv_setpv(sv,"IGNORE");
759 sv_setsv(sv,&sv_undef);
760 psig_ptr[i] = SvREFCNT_inc(sv);
767 magic_clearsig(sv,mg)
772 /* Are we clearing a signal entry? */
773 i = whichsig(MgPV(mg,na));
776 SvREFCNT_dec(psig_ptr[i]);
780 SvREFCNT_dec(psig_name[i]);
799 if (strEQ(s,"__DIE__"))
801 else if (strEQ(s,"__WARN__"))
803 else if (strEQ(s,"__PARSE__"))
806 croak("No such hook: %s", s);
814 i = whichsig(s); /* ...no, a brick */
816 if (dowarn || strEQ(s,"ALARM"))
817 warn("No such signal: SIG%s", s);
820 SvREFCNT_dec(psig_name[i]);
821 SvREFCNT_dec(psig_ptr[i]);
822 psig_ptr[i] = SvREFCNT_inc(sv);
823 SvTEMP_off(sv); /* Make sure it doesn't go away on us */
824 psig_name[i] = newSVpv(s, strlen(s));
825 SvREADONLY_on(psig_name[i]);
827 if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) {
829 (void)rsignal(i, sighandlerp);
831 *svp = SvREFCNT_inc(sv);
834 s = SvPV_force(sv,na);
835 if (strEQ(s,"IGNORE")) {
837 (void)rsignal(i, SIG_IGN);
841 else if (strEQ(s,"DEFAULT") || !*s) {
843 (void)rsignal(i, SIG_DFL);
849 * We should warn if HINT_STRICT_REFS, but without
850 * access to a known hint bit in a known OP, we can't
851 * tell whether HINT_STRICT_REFS is in force or not.
853 if (!strchr(s,':') && !strchr(s,'\''))
854 sv_setpv(sv, form("main::%s", s));
856 (void)rsignal(i, sighandlerp);
858 *svp = SvREFCNT_inc(sv);
875 magic_setamagic(sv,mg)
879 /* HV_badAMAGIC_on(Sv_STASH(sv)); */
884 #endif /* OVERLOAD */
887 magic_setnkeys(sv,mg)
892 hv_ksplit((HV*)LvTARG(sv), SvIV(sv));
893 LvTARG(sv) = Nullsv; /* Don't allow a ref to reassign this. */
899 magic_methpack(sv,mg,meth)
914 PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
915 else if (mg->mg_len == HEf_SVKEY)
916 PUSHs((SV*)mg->mg_ptr);
918 else if (mg->mg_type == 'p')
919 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
922 if (perl_call_method(meth, G_SCALAR))
923 sv_setsv(sv, *stack_sp--);
935 magic_methpack(sv,mg,"FETCH");
937 mg->mg_flags |= MGf_GSKIP;
954 PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
955 else if (mg->mg_len == HEf_SVKEY)
956 PUSHs((SV*)mg->mg_ptr);
958 else if (mg->mg_type == 'p')
959 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
963 perl_call_method("STORE", G_SCALAR|G_DISCARD);
969 magic_clearpack(sv,mg)
973 return magic_methpack(sv,mg,"DELETE");
976 int magic_wipepack(sv,mg)
987 perl_call_method("CLEAR", G_SCALAR|G_DISCARD);
993 magic_nextpack(sv,mg,key)
1000 char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
1011 if (perl_call_method(meth, G_SCALAR))
1012 sv_setsv(key, *stack_sp--);
1020 magic_existspack(sv,mg)
1024 return magic_methpack(sv,mg,"EXISTS");
1028 magic_setdbline(sv,mg)
1040 svp = av_fetch(GvAV(gv),
1041 atoi(MgPV(mg,na)), FALSE);
1042 if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp)))
1045 warn("Can't break at that line\n");
1050 magic_getarylen(sv,mg)
1055 sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + curcop->cop_arybase);
1060 magic_setarylen(sv,mg)
1065 av_fill((AV*)mg->mg_obj, SvIV(sv) - curcop->cop_arybase);
1074 SV* lsv = LvTARG(sv);
1076 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) {
1077 mg = mg_find(lsv, 'g');
1078 if (mg && mg->mg_len >= 0) {
1080 sv_setiv(sv, mg->mg_len + curcop->cop_arybase);
1093 SV* lsv = LvTARG(sv);
1099 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv))
1100 mg = mg_find(lsv, 'g');
1104 sv_magic(lsv, (SV*)0, 'g', Nullch, 0);
1105 mg = mg_find(lsv, 'g');
1107 else if (!SvOK(sv)) {
1111 len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv);
1113 WITH_THR(pos = SvIV(sv) - curcop->cop_arybase);
1122 mg->mg_flags &= ~MGf_MINMATCH;
1128 magic_getglob(sv,mg)
1132 if (SvFAKE(sv)) { /* FAKE globs can get coerced */
1134 gv_efullname3(sv,((GV*)sv), "*");
1138 gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */
1143 magic_setglob(sv,mg)
1153 if (*s == '*' && s[1])
1155 gv = gv_fetchpv(s,TRUE, SVt_PVGV);
1160 GvGP(sv) = gp_ref(GvGP(gv));
1165 magic_setsubstr(sv,mg)
1170 char *tmps = SvPV(sv,len);
1171 sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len);
1176 magic_gettaint(sv,mg)
1180 TAINT_IF((mg->mg_len & 1) ||
1181 (mg->mg_len & 2) && mg->mg_obj == sv); /* kludge */
1186 magic_settaint(sv,mg)
1192 if (localizing == 1)
1209 do_vecset(sv); /* XXX slurp this routine */
1214 magic_getdefelem(sv,mg)
1219 if (LvTARGLEN(sv)) {
1221 HV* hv = (HV*)LvTARG(sv);
1222 HE* he = hv_fetch_ent(hv, mg->mg_obj, FALSE, 0);
1227 AV* av = (AV*)LvTARG(sv);
1228 if ((I32)LvTARGOFF(sv) <= AvFILL(av))
1229 targ = AvARRAY(av)[LvTARGOFF(sv)];
1231 if (targ && targ != &sv_undef) {
1232 dTHR; /* just for SvREFCNT_dec */
1233 /* somebody else defined it for us */
1234 SvREFCNT_dec(LvTARG(sv));
1235 LvTARG(sv) = SvREFCNT_inc(targ);
1237 SvREFCNT_dec(mg->mg_obj);
1238 mg->mg_obj = Nullsv;
1239 mg->mg_flags &= ~MGf_REFCOUNTED;
1244 sv_setsv(sv, targ ? targ : &sv_undef);
1249 magic_setdefelem(sv,mg)
1256 sv_setsv(LvTARG(sv), sv);
1257 SvSETMAGIC(LvTARG(sv));
1263 magic_freedefelem(sv,mg)
1267 SvREFCNT_dec(LvTARG(sv));
1275 dTHR; /* just for SvREFCNT_inc and SvREFCNT_dec*/
1279 if (!LvTARGLEN(sv) || !(mg = mg_find(sv, 'y')))
1282 HV* hv = (HV*)LvTARG(sv);
1283 HE* he = hv_fetch_ent(hv, mg->mg_obj, TRUE, 0);
1284 if (!he || (value = HeVAL(he)) == &sv_undef)
1285 croak(no_helem, SvPV(mg->mg_obj, na));
1288 AV* av = (AV*)LvTARG(sv);
1289 if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av))
1290 LvTARG(sv) = Nullsv; /* array can't be extended */
1292 SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE);
1293 if (!svp || (value = *svp) == &sv_undef)
1294 croak(no_aelem, (I32)LvTARGOFF(sv));
1297 (void)SvREFCNT_inc(value);
1298 SvREFCNT_dec(LvTARG(sv));
1301 SvREFCNT_dec(mg->mg_obj);
1302 mg->mg_obj = Nullsv;
1303 mg->mg_flags &= ~MGf_REFCOUNTED;
1307 magic_setmglob(sv,mg)
1321 sv_unmagic(sv, 'B');
1331 sv_unmagic(sv, 'f');
1337 magic_setuvar(sv,mg)
1341 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
1343 if (uf && uf->uf_set)
1344 (*uf->uf_set)(uf->uf_index, sv);
1348 #ifdef USE_LOCALE_COLLATE
1350 magic_setcollxfrm(sv,mg)
1355 * René Descartes said "I think not."
1356 * and vanished with a faint plop.
1359 Safefree(mg->mg_ptr);
1365 #endif /* USE_LOCALE_COLLATE */
1376 switch (*mg->mg_ptr) {
1377 case '\001': /* ^A */
1378 sv_setsv(bodytarget, sv);
1380 case '\004': /* ^D */
1381 debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000;
1382 DEBUG_x(dump_all());
1384 case '\005': /* ^E */
1386 set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1388 /* will anyone ever use this? */
1389 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4);
1392 case '\006': /* ^F */
1393 maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1395 case '\010': /* ^H */
1396 hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1402 inplace = savepv(SvPV(sv,na));
1406 case '\017': /* ^O */
1410 osname = savepv(SvPV(sv,na));
1414 case '\020': /* ^P */
1415 perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1417 case '\024': /* ^T */
1419 basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv));
1421 basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1424 case '\027': /* ^W */
1425 dowarn = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1429 if (localizing == 1)
1430 save_sptr((SV**)&last_in_gv);
1432 else if (SvOK(sv) && GvIO(last_in_gv))
1433 IoLINES(GvIOp(last_in_gv)) = (long)SvIV(sv);
1436 Safefree(IoTOP_NAME(GvIOp(defoutgv)));
1437 IoTOP_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na));
1438 IoTOP_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1441 Safefree(IoFMT_NAME(GvIOp(defoutgv)));
1442 IoFMT_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na));
1443 IoFMT_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1446 IoPAGE_LEN(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1449 IoLINES_LEFT(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1450 if (IoLINES_LEFT(GvIOp(defoutgv)) < 0L)
1451 IoLINES_LEFT(GvIOp(defoutgv)) = 0L;
1454 IoPAGE(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1458 IO *io = GvIOp(defoutgv);
1459 if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0)
1460 IoFLAGS(io) &= ~IOf_FLUSH;
1462 if (!(IoFLAGS(io) & IOf_FLUSH)) {
1463 PerlIO *ofp = IoOFP(io);
1465 (void)PerlIO_flush(ofp);
1466 IoFLAGS(io) |= IOf_FLUSH;
1472 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1473 multiline = (i != 0);
1479 rs = SvREFCNT_inc(nrs);
1484 if (SvOK(sv) || SvGMAGICAL(sv))
1485 ors = savepv(SvPV(sv,orslen));
1494 ofs = savepv(SvPV(sv, ofslen));
1499 ofmt = savepv(SvPV(sv,na));
1502 compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1505 #ifdef COMPLEX_STATUS
1506 if (localizing == 2) {
1507 statusvalue = LvTARGOFF(sv);
1508 statusvalue_vms = LvTARGLEN(sv);
1512 #ifdef VMSISH_STATUS
1514 STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)));
1517 STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1520 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv),
1521 (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno);
1524 uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1526 delaymagic |= DM_RUID;
1527 break; /* don't do magic till later */
1530 (void)setruid((Uid_t)uid);
1533 (void)setreuid((Uid_t)uid, (Uid_t)-1);
1535 #ifdef HAS_SETRESUID
1536 (void)setresuid((Uid_t)uid, (Uid_t)-1, (Uid_t)-1);
1538 if (uid == euid) /* special case $< = $> */
1541 uid = (I32)getuid();
1542 croak("setruid() not implemented");
1547 uid = (I32)getuid();
1548 tainting |= (uid && (euid != uid || egid != gid));
1551 euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1553 delaymagic |= DM_EUID;
1554 break; /* don't do magic till later */
1557 (void)seteuid((Uid_t)euid);
1560 (void)setreuid((Uid_t)-1, (Uid_t)euid);
1562 #ifdef HAS_SETRESUID
1563 (void)setresuid((Uid_t)-1, (Uid_t)euid, (Uid_t)-1);
1565 if (euid == uid) /* special case $> = $< */
1568 euid = (I32)geteuid();
1569 croak("seteuid() not implemented");
1574 euid = (I32)geteuid();
1575 tainting |= (uid && (euid != uid || egid != gid));
1578 gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1580 delaymagic |= DM_RGID;
1581 break; /* don't do magic till later */
1584 (void)setrgid((Gid_t)gid);
1587 (void)setregid((Gid_t)gid, (Gid_t)-1);
1589 #ifdef HAS_SETRESGID
1590 (void)setresgid((Gid_t)gid, (Gid_t)-1, (Gid_t) 1);
1592 if (gid == egid) /* special case $( = $) */
1595 gid = (I32)getgid();
1596 croak("setrgid() not implemented");
1601 gid = (I32)getgid();
1602 tainting |= (uid && (euid != uid || egid != gid));
1605 #ifdef HAS_SETGROUPS
1607 char *p = SvPV(sv, na);
1608 Groups_t gary[NGROUPS];
1610 SET_NUMERIC_STANDARD();
1613 egid = I_V(atof(p));
1614 for (i = 0; i < NGROUPS; ++i) {
1615 while (*p && !isSPACE(*p))
1621 gary[i] = I_V(atof(p));
1624 (void)setgroups(i, gary);
1626 #else /* HAS_SETGROUPS */
1627 egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1628 #endif /* HAS_SETGROUPS */
1630 delaymagic |= DM_EGID;
1631 break; /* don't do magic till later */
1634 (void)setegid((Gid_t)egid);
1637 (void)setregid((Gid_t)-1, (Gid_t)egid);
1639 #ifdef HAS_SETRESGID
1640 (void)setresgid((Gid_t)-1, (Gid_t)egid, (Gid_t)-1);
1642 if (egid == gid) /* special case $) = $( */
1645 egid = (I32)getegid();
1646 croak("setegid() not implemented");
1651 egid = (I32)getegid();
1652 tainting |= (uid && (euid != uid || egid != gid));
1655 chopset = SvPV_force(sv,na);
1661 /* See if all the arguments are contiguous in memory */
1662 for (i = 1; i < origargc; i++) {
1663 if (origargv[i] == s + 1
1665 || origargv[i] == s + 2
1668 s += strlen(++s); /* this one is ok too */
1672 /* can grab env area too? */
1673 if (origenviron && (origenviron[0] == s + 1
1675 || (origenviron[0] == s + 9 && (s += 8))
1678 my_setenv("NoNe SuCh", Nullch);
1679 /* force copy of environment */
1680 for (i = 0; origenviron[i]; i++)
1681 if (origenviron[i] == s + 1)
1686 origalen = s - origargv[0];
1688 s = SvPV_force(sv,len);
1690 if (i >= origalen) {
1692 /* don't allow system to limit $0 seen by script */
1693 /* SvCUR_set(sv, i); *SvEND(sv) = '\0'; */
1694 Copy(s, origargv[0], i, char);
1699 Copy(s, origargv[0], i, char);
1702 while (++i < origalen)
1705 for (i = 1; i < origargc; i++)
1706 origargv[i] = Nullch;
1715 magic_mutexfree(sv, mg)
1720 DEBUG_L(PerlIO_printf(PerlIO_stderr(), "0x%lx: magic_mutexfree 0x%lx\n",
1721 (unsigned long)thr, (unsigned long)sv);)
1723 croak("panic: magic_mutexfree");
1724 MUTEX_DESTROY(MgMUTEXP(mg));
1725 COND_DESTROY(MgCONDP(mg));
1729 #endif /* USE_THREADS */
1735 register char **sigv;
1737 for (sigv = sig_name+1; *sigv; sigv++)
1738 if (strEQ(sig,*sigv))
1739 return sig_num[sigv - sig_name];
1741 if (strEQ(sig,"CHLD"))
1745 if (strEQ(sig,"CLD"))
1754 unwind_handler_stack(p)
1758 U32 flags = *(U32*)p;
1761 savestack_ix -= 5; /* Unprotect save in progress. */
1762 /* cxstack_ix-- Not needed, die already unwound it. */
1764 SvREFCNT_dec(sig_sv);
1780 I32 o_save_i = savestack_ix, type;
1784 if (savestack_ix + 15 <= savestack_max)
1786 if (cxstack_ix < cxstack_max - 2)
1788 if (markstack_ptr < markstack_max - 2)
1790 if (retstack_ix < retstack_max - 2)
1792 if (scopestack_ix < scopestack_max - 3)
1795 if (flags & 2) { /* POPBLOCK may decrease cxstack too early. */
1796 cxstack_ix++; /* Protect from overwrite. */
1797 cx = &cxstack[cxstack_ix];
1798 type = cx->cx_type; /* Can be during partial write. */
1799 cx->cx_type = CXt_NULL; /* Make it safe for unwind. */
1802 die("Signal SIG%s received, but no signal handler set.\n",
1805 /* Max number of items pushed there is 3*n or 4. We cannot fix
1806 infinity, so we fix 4 (in fact 5): */
1808 savestack_ix += 5; /* Protect save in progress. */
1809 o_save_i = savestack_ix;
1810 SAVEDESTRUCTOR(unwind_handler_stack, (void*)&flags);
1813 markstack_ptr++; /* Protect mark. */
1816 retstack[retstack_ix] = NULL;
1820 /* sv_2cv is too complicated, try a simpler variant first: */
1821 if (!SvROK(psig_ptr[sig]) || !(cv = (CV*)SvRV(psig_ptr[sig]))
1822 || SvTYPE(cv) != SVt_PVCV)
1823 cv = sv_2cv(psig_ptr[sig],&st,&gv,TRUE);
1825 if (!cv || !CvROOT(cv)) {
1827 warn("SIG%s handler \"%s\" not defined.\n",
1828 sig_name[sig], GvENAME(gv) );
1832 oldstack = curstack;
1833 if (curstack != signalstack)
1834 AvFILL(signalstack) = 0;
1835 SWITCHSTACK(curstack, signalstack);
1837 if(psig_name[sig]) {
1838 sv = SvREFCNT_inc(psig_name[sig]);
1842 sv = sv_newmortal();
1843 sv_setpv(sv,sig_name[sig]);
1849 perl_call_sv((SV*)cv, G_DISCARD);
1851 SWITCHSTACK(signalstack, oldstack);
1853 savestack_ix -= 8; /* Unprotect save in progress. */
1855 cxstack[cxstack_ix].cx_type = type;
1866 op = myop; /* Apparently not needed... */
1868 Sv = tSv; /* Restore global temporaries. */