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));
42 save_magic(MGS *mgs, SV *sv)
44 assert(SvMAGICAL(sv));
47 mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv);
48 SAVEDESTRUCTOR(restore_magic, mgs);
52 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
56 restore_magic(void *p)
61 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
64 SvFLAGS(sv) |= mgs->mgs_flags;
68 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
77 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
78 MGVTBL* vtbl = mg->mg_virtual;
80 if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP))
84 if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || vtbl->svt_clear)
102 while ((mg = *mgp) != 0) {
103 MGVTBL* vtbl = mg->mg_virtual;
104 if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) {
105 (*vtbl->svt_get)(sv, mg);
106 /* Ignore this magic if it's been deleted */
107 if ((mg == (mgp_valid ? *mgp : SvMAGIC(sv))) &&
108 (mg->mg_flags & MGf_GSKIP))
111 /* Advance to next magic (complicated by possible deletion) */
112 if (mg == (mgp_valid ? *mgp : SvMAGIC(sv))) {
113 mgp = &mg->mg_moremagic;
117 mgp = &SvMAGIC(sv); /* Re-establish pointer after sv_upgrade */
132 save_magic(&mgs, sv);
134 for (mg = SvMAGIC(sv); mg; mg = nextmg) {
135 MGVTBL* vtbl = mg->mg_virtual;
136 nextmg = mg->mg_moremagic; /* it may delete itself */
137 if (mg->mg_flags & MGf_GSKIP) {
138 mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */
141 if (vtbl && vtbl->svt_set)
142 (*vtbl->svt_set)(sv, mg);
156 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
157 MGVTBL* vtbl = mg->mg_virtual;
158 if (vtbl && vtbl->svt_len) {
162 save_magic(&mgs, sv);
163 /* omit MGf_GSKIP -- not changed here */
164 len = (*vtbl->svt_len)(sv, mg);
170 junk = SvPV(sv, len);
181 save_magic(&mgs, sv);
183 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
184 MGVTBL* vtbl = mg->mg_virtual;
185 /* omit GSKIP -- never set here */
187 if (vtbl && vtbl->svt_clear)
188 (*vtbl->svt_clear)(sv, mg);
196 mg_find(SV *sv, int type)
199 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
200 if (mg->mg_type == type)
207 mg_copy(SV *sv, SV *nsv, char *key, I32 klen)
211 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
212 if (isUPPER(mg->mg_type)) {
213 sv_magic(nsv, mg->mg_obj, toLOWER(mg->mg_type), key, klen);
225 for (mg = SvMAGIC(sv); mg; mg = moremagic) {
226 MGVTBL* vtbl = mg->mg_virtual;
227 moremagic = mg->mg_moremagic;
228 if (vtbl && vtbl->svt_free)
229 (*vtbl->svt_free)(sv, mg);
230 if (mg->mg_ptr && mg->mg_type != 'g')
232 Safefree(mg->mg_ptr);
233 else if (mg->mg_len == HEf_SVKEY)
234 SvREFCNT_dec((SV*)mg->mg_ptr);
235 if (mg->mg_flags & MGf_REFCOUNTED)
236 SvREFCNT_dec(mg->mg_obj);
243 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
248 magic_len(SV *sv, MAGIC *mg)
256 switch (*mg->mg_ptr) {
257 case '1': case '2': case '3': case '4':
258 case '5': case '6': case '7': case '8': case '9': case '&':
259 if (curpm && (rx = curpm->op_pmregexp)) {
260 paren = atoi(mg->mg_ptr);
262 if (paren <= rx->nparens &&
263 (s = rx->startp[paren]) &&
264 (t = rx->endp[paren]))
273 if (curpm && (rx = curpm->op_pmregexp)) {
274 paren = rx->lastparen;
280 if (curpm && (rx = curpm->op_pmregexp)) {
281 if ((s = rx->subbeg) && rx->startp[0]) {
282 i = rx->startp[0] - s;
289 if (curpm && (rx = curpm->op_pmregexp)) {
290 if (rx->subend && (s = rx->endp[0])) {
298 return (STRLEN)ofslen;
300 return (STRLEN)orslen;
303 if (!SvPOK(sv) && SvNIOK(sv))
311 magic_get(SV *sv, MAGIC *mg)
319 switch (*mg->mg_ptr) {
320 case '\001': /* ^A */
321 sv_setsv(sv, bodytarget);
323 case '\004': /* ^D */
324 sv_setiv(sv, (IV)(debug & 32767));
326 case '\005': /* ^E */
329 # include <descrip.h>
330 # include <starlet.h>
332 $DESCRIPTOR(msgdsc,msg);
333 sv_setnv(sv,(double) vaxc$errno);
334 if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1)
335 sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length);
341 if (!(_emx_env & 0x200)) { /* Under DOS */
342 sv_setnv(sv, (double)errno);
343 sv_setpv(sv, errno ? Strerror(errno) : "");
345 if (errno != errno_isOS2)
346 Perl_rc = _syserrno();
347 sv_setnv(sv, (double)Perl_rc);
348 sv_setpv(sv, os2error(Perl_rc));
351 sv_setnv(sv, (double)errno);
352 sv_setpv(sv, errno ? Strerror(errno) : "");
355 SvNOK_on(sv); /* what a wonderful hack! */
357 case '\006': /* ^F */
358 sv_setiv(sv, (IV)maxsysfd);
360 case '\010': /* ^H */
361 sv_setiv(sv, (IV)hints);
365 sv_setpv(sv, inplace);
367 sv_setsv(sv, &sv_undef);
369 case '\017': /* ^O */
370 sv_setpv(sv, osname);
372 case '\020': /* ^P */
373 sv_setiv(sv, (IV)perldb);
375 case '\023': /* ^S */
378 if (lex_state != LEX_NOTPARSING)
386 case '\024': /* ^T */
388 sv_setnv(sv, basetime);
390 sv_setiv(sv, (IV)basetime);
393 case '\027': /* ^W */
394 sv_setiv(sv, (IV)dowarn);
396 case '1': case '2': case '3': case '4':
397 case '5': case '6': case '7': case '8': case '9': case '&':
398 if (curpm && (rx = curpm->op_pmregexp)) {
399 paren = atoi(GvENAME((GV*)mg->mg_obj));
401 if (paren <= rx->nparens &&
402 (s = rx->startp[paren]) &&
403 (t = rx->endp[paren]))
410 was_tainted = tainted;
415 tainted = was_tainted || rx->exec_tainted;
420 sv_setsv(sv,&sv_undef);
423 if (curpm && (rx = curpm->op_pmregexp)) {
424 paren = rx->lastparen;
428 sv_setsv(sv,&sv_undef);
431 if (curpm && (rx = curpm->op_pmregexp)) {
432 if ((s = rx->subbeg) && rx->startp[0]) {
433 i = rx->startp[0] - s;
437 sv_setsv(sv,&sv_undef);
440 if (curpm && (rx = curpm->op_pmregexp)) {
441 if (rx->subend && (s = rx->endp[0])) {
446 sv_setsv(sv,&sv_undef);
450 if (GvIO(last_in_gv)) {
451 sv_setiv(sv, (IV)IoLINES(GvIO(last_in_gv)));
458 sv_setiv(sv, (IV)STATUS_CURRENT);
459 #ifdef COMPLEX_STATUS
460 LvTARGOFF(sv) = statusvalue;
461 LvTARGLEN(sv) = statusvalue_vms;
466 s = IoTOP_NAME(GvIOp(defoutgv));
470 sv_setpv(sv,GvENAME(defoutgv));
475 s = IoFMT_NAME(GvIOp(defoutgv));
477 s = GvENAME(defoutgv);
482 sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(defoutgv)));
485 sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(defoutgv)));
488 sv_setiv(sv, (IV)IoPAGE(GvIOp(defoutgv)));
496 WITH_THR(sv_setiv(sv, (IV)curcop->cop_arybase));
499 sv_setiv(sv, (IV)(IoFLAGS(GvIOp(defoutgv)) & IOf_FLUSH) != 0 );
502 sv_setpvn(sv,ofs,ofslen);
505 sv_setpvn(sv,ors,orslen);
512 sv_setnv(sv, (double)((errno == EVMSERR) ? vaxc$errno : errno));
513 sv_setpv(sv, errno ? Strerror(errno) : "");
516 int saveerrno = errno;
517 sv_setnv(sv, (double)errno);
519 if (errno == errno_isOS2) sv_setpv(sv, os2error(Perl_rc));
522 sv_setpv(sv, errno ? Strerror(errno) : "");
526 SvNOK_on(sv); /* what a wonderful hack! */
529 sv_setiv(sv, (IV)uid);
532 sv_setiv(sv, (IV)euid);
535 sv_setiv(sv, (IV)gid);
536 sv_setpvf(sv, "%Vd", (IV)gid);
539 sv_setiv(sv, (IV)egid);
540 sv_setpvf(sv, "%Vd", (IV)egid);
544 Groups_t gary[NGROUPS];
545 i = getgroups(NGROUPS,gary);
547 sv_catpvf(sv, " %Vd", (IV)gary[i]);
550 SvIOK_on(sv); /* what a wonderful hack! */
561 magic_getuvar(SV *sv, MAGIC *mg)
563 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
565 if (uf && uf->uf_val)
566 (*uf->uf_val)(uf->uf_index, sv);
571 magic_setenv(SV *sv, MAGIC *mg)
582 #ifdef DYNAMIC_ENV_FETCH
583 /* We just undefd an environment var. Is a replacement */
584 /* waiting in the wings? */
587 if ((valp = hv_fetch(GvHVn(envgv), ptr, klen, FALSE)))
588 s = SvPV(*valp, len);
592 #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32)
593 /* And you'll never guess what the dog had */
594 /* in its mouth... */
596 MgTAINTEDDIR_off(mg);
598 if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) {
599 char pathbuf[256], eltbuf[256], *cp, *elt = s;
603 do { /* DCL$PATH may be a search list */
604 while (1) { /* as may dev portion of any element */
605 if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) {
606 if ( *(cp+1) == '.' || *(cp+1) == '-' ||
607 cando_by_name(S_IWUSR,0,elt) ) {
612 if ((cp = strchr(elt, ':')) != Nullch)
614 if (my_trnlnm(elt, eltbuf, j++))
620 } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf));
623 if (s && klen == 4 && strEQ(ptr,"PATH")) {
624 char *strend = s + len;
629 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf,
632 if (i >= sizeof tmpbuf /* too long -- assume the worst */
634 || (Stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) {
641 #endif /* neither OS2 nor AMIGAOS nor WIN32 */
647 magic_clearenv(SV *sv, MAGIC *mg)
649 my_setenv(MgPV(mg,na),Nullch);
654 magic_set_all_env(SV *sv, MAGIC *mg)
657 die("Can't make list assignment to %%ENV on this system");
662 magic_clear_all_env(sv,mg);
663 hv_iterinit((HV*)sv);
664 while (entry = hv_iternext((HV*)sv)) {
666 my_setenv(hv_iterkey(entry, &keylen),
667 SvPV(hv_iterval((HV*)sv, entry), na));
675 magic_clear_all_env(SV *sv, MAGIC *mg)
678 die("Can't make list assignment to %%ENV on this system");
681 char *envv = GetEnvironmentStrings();
685 char *end = strchr(cur,'=');
686 if (end && end != cur) {
688 my_setenv(cur,Nullch);
690 cur += strlen(end+1)+1;
692 else if ((len = strlen(cur)))
695 FreeEnvironmentStrings(envv);
699 if (environ == origenviron)
700 New(901, environ, 1, char*);
702 for (i = 0; environ[i]; i++)
703 Safefree(environ[i]);
712 magic_getsig(SV *sv, MAGIC *mg)
715 /* Are we fetching a signal entry? */
716 i = whichsig(MgPV(mg,na));
719 sv_setsv(sv,psig_ptr[i]);
721 dTHR; /* just for SvREFCNT_inc */
722 Sighandler_t sigstate = rsignal_state(i);
724 /* cache state so we don't fetch it again */
725 if(sigstate == SIG_IGN)
726 sv_setpv(sv,"IGNORE");
728 sv_setsv(sv,&sv_undef);
729 psig_ptr[i] = SvREFCNT_inc(sv);
736 magic_clearsig(SV *sv, MAGIC *mg)
739 /* Are we clearing a signal entry? */
740 i = whichsig(MgPV(mg,na));
743 SvREFCNT_dec(psig_ptr[i]);
747 SvREFCNT_dec(psig_name[i]);
755 magic_setsig(SV *sv, MAGIC *mg)
764 if (strEQ(s,"__DIE__"))
766 else if (strEQ(s,"__WARN__"))
768 else if (strEQ(s,"__PARSE__"))
771 croak("No such hook: %s", s);
779 i = whichsig(s); /* ...no, a brick */
781 if (dowarn || strEQ(s,"ALARM"))
782 warn("No such signal: SIG%s", s);
785 SvREFCNT_dec(psig_name[i]);
786 SvREFCNT_dec(psig_ptr[i]);
787 psig_ptr[i] = SvREFCNT_inc(sv);
788 SvTEMP_off(sv); /* Make sure it doesn't go away on us */
789 psig_name[i] = newSVpv(s, strlen(s));
790 SvREADONLY_on(psig_name[i]);
792 if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) {
794 (void)rsignal(i, sighandlerp);
796 *svp = SvREFCNT_inc(sv);
799 s = SvPV_force(sv,na);
800 if (strEQ(s,"IGNORE")) {
802 (void)rsignal(i, SIG_IGN);
806 else if (strEQ(s,"DEFAULT") || !*s) {
808 (void)rsignal(i, SIG_DFL);
814 * We should warn if HINT_STRICT_REFS, but without
815 * access to a known hint bit in a known OP, we can't
816 * tell whether HINT_STRICT_REFS is in force or not.
818 if (!strchr(s,':') && !strchr(s,'\''))
819 sv_setpv(sv, form("main::%s", s));
821 (void)rsignal(i, sighandlerp);
823 *svp = SvREFCNT_inc(sv);
829 magic_setisa(SV *sv, MAGIC *mg)
838 magic_setamagic(SV *sv, MAGIC *mg)
840 /* HV_badAMAGIC_on(Sv_STASH(sv)); */
845 #endif /* OVERLOAD */
848 magic_setnkeys(SV *sv, MAGIC *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 *sv, MAGIC *mg, char *meth)
870 PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
871 else if (mg->mg_len == HEf_SVKEY)
872 PUSHs((SV*)mg->mg_ptr);
874 else if (mg->mg_type == 'p')
875 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
878 if (perl_call_method(meth, G_SCALAR))
879 sv_setsv(sv, *stack_sp--);
887 magic_getpack(SV *sv, MAGIC *mg)
889 magic_methpack(sv,mg,"FETCH");
891 mg->mg_flags |= MGf_GSKIP;
896 magic_setpack(SV *sv, MAGIC *mg)
906 PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
907 else if (mg->mg_len == HEf_SVKEY)
908 PUSHs((SV*)mg->mg_ptr);
910 else if (mg->mg_type == 'p')
911 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
915 perl_call_method("STORE", G_SCALAR|G_DISCARD);
921 magic_clearpack(SV *sv, MAGIC *mg)
923 return magic_methpack(sv,mg,"DELETE");
926 int magic_wipepack(SV *sv, MAGIC *mg)
935 perl_call_method("CLEAR", G_SCALAR|G_DISCARD);
941 magic_nextpack(SV *sv, MAGIC *mg, SV *key)
945 char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
956 if (perl_call_method(meth, G_SCALAR))
957 sv_setsv(key, *stack_sp--);
965 magic_existspack(SV *sv, MAGIC *mg)
967 return magic_methpack(sv,mg,"EXISTS");
971 magic_setdbline(SV *sv, MAGIC *mg)
981 svp = av_fetch(GvAV(gv),
982 atoi(MgPV(mg,na)), FALSE);
983 if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp)))
986 warn("Can't break at that line\n");
991 magic_getarylen(SV *sv, MAGIC *mg)
994 sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + curcop->cop_arybase);
999 magic_setarylen(SV *sv, MAGIC *mg)
1002 av_fill((AV*)mg->mg_obj, SvIV(sv) - curcop->cop_arybase);
1007 magic_getpos(SV *sv, MAGIC *mg)
1009 SV* lsv = LvTARG(sv);
1011 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) {
1012 mg = mg_find(lsv, 'g');
1013 if (mg && mg->mg_len >= 0) {
1015 sv_setiv(sv, mg->mg_len + curcop->cop_arybase);
1024 magic_setpos(SV *sv, MAGIC *mg)
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 WITH_THR(pos = SvIV(sv) - curcop->cop_arybase);
1055 mg->mg_flags &= ~MGf_MINMATCH;
1061 magic_getglob(SV *sv, MAGIC *mg)
1063 if (SvFAKE(sv)) { /* FAKE globs can get coerced */
1065 gv_efullname3(sv,((GV*)sv), "*");
1069 gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */
1074 magic_setglob(SV *sv, MAGIC *mg)
1082 if (*s == '*' && s[1])
1084 gv = gv_fetchpv(s,TRUE, SVt_PVGV);
1089 GvGP(sv) = gp_ref(GvGP(gv));
1094 magic_setsubstr(SV *sv, MAGIC *mg)
1097 char *tmps = SvPV(sv,len);
1098 sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len);
1103 magic_gettaint(SV *sv, MAGIC *mg)
1105 TAINT_IF((mg->mg_len & 1) ||
1106 (mg->mg_len & 2) && mg->mg_obj == sv); /* kludge */
1111 magic_settaint(SV *sv, MAGIC *mg)
1115 if (localizing == 1)
1128 magic_setvec(SV *sv, MAGIC *mg)
1130 do_vecset(sv); /* XXX slurp this routine */
1135 magic_getdefelem(SV *sv, MAGIC *mg)
1138 if (LvTARGLEN(sv)) {
1140 HV* hv = (HV*)LvTARG(sv);
1141 HE* he = hv_fetch_ent(hv, mg->mg_obj, FALSE, 0);
1146 AV* av = (AV*)LvTARG(sv);
1147 if ((I32)LvTARGOFF(sv) <= AvFILL(av))
1148 targ = AvARRAY(av)[LvTARGOFF(sv)];
1150 if (targ && targ != &sv_undef) {
1151 dTHR; /* just for SvREFCNT_dec */
1152 /* somebody else defined it for us */
1153 SvREFCNT_dec(LvTARG(sv));
1154 LvTARG(sv) = SvREFCNT_inc(targ);
1156 SvREFCNT_dec(mg->mg_obj);
1157 mg->mg_obj = Nullsv;
1158 mg->mg_flags &= ~MGf_REFCOUNTED;
1163 sv_setsv(sv, targ ? targ : &sv_undef);
1168 magic_setdefelem(SV *sv, MAGIC *mg)
1173 sv_setsv(LvTARG(sv), sv);
1174 SvSETMAGIC(LvTARG(sv));
1180 magic_freedefelem(SV *sv, MAGIC *mg)
1182 SvREFCNT_dec(LvTARG(sv));
1187 vivify_defelem(SV *sv)
1189 dTHR; /* just for SvREFCNT_inc and SvREFCNT_dec*/
1193 if (!LvTARGLEN(sv) || !(mg = mg_find(sv, 'y')))
1196 HV* hv = (HV*)LvTARG(sv);
1197 HE* he = hv_fetch_ent(hv, mg->mg_obj, TRUE, 0);
1198 if (!he || (value = HeVAL(he)) == &sv_undef)
1199 croak(no_helem, SvPV(mg->mg_obj, na));
1202 AV* av = (AV*)LvTARG(sv);
1203 if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av))
1204 LvTARG(sv) = Nullsv; /* array can't be extended */
1206 SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE);
1207 if (!svp || (value = *svp) == &sv_undef)
1208 croak(no_aelem, (I32)LvTARGOFF(sv));
1211 (void)SvREFCNT_inc(value);
1212 SvREFCNT_dec(LvTARG(sv));
1215 SvREFCNT_dec(mg->mg_obj);
1216 mg->mg_obj = Nullsv;
1217 mg->mg_flags &= ~MGf_REFCOUNTED;
1221 magic_setmglob(SV *sv, MAGIC *mg)
1229 magic_setbm(SV *sv, MAGIC *mg)
1231 sv_unmagic(sv, 'B');
1237 magic_setfm(SV *sv, MAGIC *mg)
1239 sv_unmagic(sv, 'f');
1245 magic_setuvar(SV *sv, MAGIC *mg)
1247 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
1249 if (uf && uf->uf_set)
1250 (*uf->uf_set)(uf->uf_index, sv);
1254 #ifdef USE_LOCALE_COLLATE
1256 magic_setcollxfrm(SV *sv, MAGIC *mg)
1259 * René Descartes said "I think not."
1260 * and vanished with a faint plop.
1263 Safefree(mg->mg_ptr);
1269 #endif /* USE_LOCALE_COLLATE */
1272 magic_set(SV *sv, MAGIC *mg)
1278 switch (*mg->mg_ptr) {
1279 case '\001': /* ^A */
1280 sv_setsv(bodytarget, sv);
1282 case '\004': /* ^D */
1283 debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000;
1284 DEBUG_x(dump_all());
1286 case '\005': /* ^E */
1288 set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1290 /* will anyone ever use this? */
1291 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4);
1294 case '\006': /* ^F */
1295 maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1297 case '\010': /* ^H */
1298 hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1304 inplace = savepv(SvPV(sv,na));
1308 case '\017': /* ^O */
1312 osname = savepv(SvPV(sv,na));
1316 case '\020': /* ^P */
1317 perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1319 case '\024': /* ^T */
1321 basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv));
1323 basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1326 case '\027': /* ^W */
1327 dowarn = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1331 if (localizing == 1)
1332 save_sptr((SV**)&last_in_gv);
1334 else if (SvOK(sv) && GvIO(last_in_gv))
1335 IoLINES(GvIOp(last_in_gv)) = (long)SvIV(sv);
1338 Safefree(IoTOP_NAME(GvIOp(defoutgv)));
1339 IoTOP_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na));
1340 IoTOP_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1343 Safefree(IoFMT_NAME(GvIOp(defoutgv)));
1344 IoFMT_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na));
1345 IoFMT_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1348 IoPAGE_LEN(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1351 IoLINES_LEFT(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1352 if (IoLINES_LEFT(GvIOp(defoutgv)) < 0L)
1353 IoLINES_LEFT(GvIOp(defoutgv)) = 0L;
1356 IoPAGE(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1360 IO *io = GvIOp(defoutgv);
1361 if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0)
1362 IoFLAGS(io) &= ~IOf_FLUSH;
1364 if (!(IoFLAGS(io) & IOf_FLUSH)) {
1365 PerlIO *ofp = IoOFP(io);
1367 (void)PerlIO_flush(ofp);
1368 IoFLAGS(io) |= IOf_FLUSH;
1374 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1375 multiline = (i != 0);
1381 rs = SvREFCNT_inc(nrs);
1386 if (SvOK(sv) || SvGMAGICAL(sv))
1387 ors = savepv(SvPV(sv,orslen));
1396 ofs = savepv(SvPV(sv, ofslen));
1401 ofmt = savepv(SvPV(sv,na));
1404 compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1407 #ifdef COMPLEX_STATUS
1408 if (localizing == 2) {
1409 statusvalue = LvTARGOFF(sv);
1410 statusvalue_vms = LvTARGLEN(sv);
1414 #ifdef VMSISH_STATUS
1416 STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)));
1419 STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1422 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv),
1423 (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno);
1426 uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1428 delaymagic |= DM_RUID;
1429 break; /* don't do magic till later */
1432 (void)setruid((Uid_t)uid);
1435 (void)setreuid((Uid_t)uid, (Uid_t)-1);
1437 #ifdef HAS_SETRESUID
1438 (void)setresuid((Uid_t)uid, (Uid_t)-1, (Uid_t)-1);
1440 if (uid == euid) /* special case $< = $> */
1443 uid = (I32)getuid();
1444 croak("setruid() not implemented");
1449 uid = (I32)getuid();
1450 tainting |= (uid && (euid != uid || egid != gid));
1453 euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1455 delaymagic |= DM_EUID;
1456 break; /* don't do magic till later */
1459 (void)seteuid((Uid_t)euid);
1462 (void)setreuid((Uid_t)-1, (Uid_t)euid);
1464 #ifdef HAS_SETRESUID
1465 (void)setresuid((Uid_t)-1, (Uid_t)euid, (Uid_t)-1);
1467 if (euid == uid) /* special case $> = $< */
1470 euid = (I32)geteuid();
1471 croak("seteuid() not implemented");
1476 euid = (I32)geteuid();
1477 tainting |= (uid && (euid != uid || egid != gid));
1480 gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1482 delaymagic |= DM_RGID;
1483 break; /* don't do magic till later */
1486 (void)setrgid((Gid_t)gid);
1489 (void)setregid((Gid_t)gid, (Gid_t)-1);
1491 #ifdef HAS_SETRESGID
1492 (void)setresgid((Gid_t)gid, (Gid_t)-1, (Gid_t) 1);
1494 if (gid == egid) /* special case $( = $) */
1497 gid = (I32)getgid();
1498 croak("setrgid() not implemented");
1503 gid = (I32)getgid();
1504 tainting |= (uid && (euid != uid || egid != gid));
1507 #ifdef HAS_SETGROUPS
1509 char *p = SvPV(sv, na);
1510 Groups_t gary[NGROUPS];
1512 SET_NUMERIC_STANDARD();
1515 egid = I_V(atof(p));
1516 for (i = 0; i < NGROUPS; ++i) {
1517 while (*p && !isSPACE(*p))
1523 gary[i] = I_V(atof(p));
1526 (void)setgroups(i, gary);
1528 #else /* HAS_SETGROUPS */
1529 egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1530 #endif /* HAS_SETGROUPS */
1532 delaymagic |= DM_EGID;
1533 break; /* don't do magic till later */
1536 (void)setegid((Gid_t)egid);
1539 (void)setregid((Gid_t)-1, (Gid_t)egid);
1541 #ifdef HAS_SETRESGID
1542 (void)setresgid((Gid_t)-1, (Gid_t)egid, (Gid_t)-1);
1544 if (egid == gid) /* special case $) = $( */
1547 egid = (I32)getegid();
1548 croak("setegid() not implemented");
1553 egid = (I32)getegid();
1554 tainting |= (uid && (euid != uid || egid != gid));
1557 chopset = SvPV_force(sv,na);
1563 /* See if all the arguments are contiguous in memory */
1564 for (i = 1; i < origargc; i++) {
1565 if (origargv[i] == s + 1
1567 || origargv[i] == s + 2
1570 s += strlen(++s); /* this one is ok too */
1574 /* can grab env area too? */
1575 if (origenviron && (origenviron[0] == s + 1
1577 || (origenviron[0] == s + 9 && (s += 8))
1580 my_setenv("NoNe SuCh", Nullch);
1581 /* force copy of environment */
1582 for (i = 0; origenviron[i]; i++)
1583 if (origenviron[i] == s + 1)
1588 origalen = s - origargv[0];
1590 s = SvPV_force(sv,len);
1592 if (i >= origalen) {
1594 /* don't allow system to limit $0 seen by script */
1595 /* SvCUR_set(sv, i); *SvEND(sv) = '\0'; */
1596 Copy(s, origargv[0], i, char);
1601 Copy(s, origargv[0], i, char);
1604 while (++i < origalen)
1607 for (i = 1; i < origargc; i++)
1608 origargv[i] = Nullch;
1617 magic_mutexfree(SV *sv, MAGIC *mg)
1620 DEBUG_L(PerlIO_printf(PerlIO_stderr(), "0x%lx: magic_mutexfree 0x%lx\n",
1621 (unsigned long)thr, (unsigned long)sv);)
1623 croak("panic: magic_mutexfree");
1624 MUTEX_DESTROY(MgMUTEXP(mg));
1625 COND_DESTROY(MgCONDP(mg));
1629 #endif /* USE_THREADS */
1634 register char **sigv;
1636 for (sigv = sig_name+1; *sigv; sigv++)
1637 if (strEQ(sig,*sigv))
1638 return sig_num[sigv - sig_name];
1640 if (strEQ(sig,"CHLD"))
1644 if (strEQ(sig,"CLD"))
1653 unwind_handler_stack(void *p)
1656 U32 flags = *(U32*)p;
1659 savestack_ix -= 5; /* Unprotect save in progress. */
1660 /* cxstack_ix-- Not needed, die already unwound it. */
1662 SvREFCNT_dec(sig_sv);
1677 I32 o_save_i = savestack_ix, type;
1681 if (savestack_ix + 15 <= savestack_max)
1683 if (cxstack_ix < cxstack_max - 2)
1685 if (markstack_ptr < markstack_max - 2)
1687 if (retstack_ix < retstack_max - 2)
1689 if (scopestack_ix < scopestack_max - 3)
1692 if (flags & 2) { /* POPBLOCK may decrease cxstack too early. */
1693 cxstack_ix++; /* Protect from overwrite. */
1694 cx = &cxstack[cxstack_ix];
1695 type = cx->cx_type; /* Can be during partial write. */
1696 cx->cx_type = CXt_NULL; /* Make it safe for unwind. */
1699 die("Signal SIG%s received, but no signal handler set.\n",
1702 /* Max number of items pushed there is 3*n or 4. We cannot fix
1703 infinity, so we fix 4 (in fact 5): */
1705 savestack_ix += 5; /* Protect save in progress. */
1706 o_save_i = savestack_ix;
1707 SAVEDESTRUCTOR(unwind_handler_stack, (void*)&flags);
1710 markstack_ptr++; /* Protect mark. */
1713 retstack[retstack_ix] = NULL;
1717 /* sv_2cv is too complicated, try a simpler variant first: */
1718 if (!SvROK(psig_ptr[sig]) || !(cv = (CV*)SvRV(psig_ptr[sig]))
1719 || SvTYPE(cv) != SVt_PVCV)
1720 cv = sv_2cv(psig_ptr[sig],&st,&gv,TRUE);
1722 if (!cv || !CvROOT(cv)) {
1724 warn("SIG%s handler \"%s\" not defined.\n",
1725 sig_name[sig], GvENAME(gv) );
1729 oldstack = curstack;
1730 if (curstack != signalstack)
1731 AvFILL(signalstack) = 0;
1732 SWITCHSTACK(curstack, signalstack);
1734 if(psig_name[sig]) {
1735 sv = SvREFCNT_inc(psig_name[sig]);
1739 sv = sv_newmortal();
1740 sv_setpv(sv,sig_name[sig]);
1746 perl_call_sv((SV*)cv, G_DISCARD);
1748 SWITCHSTACK(signalstack, oldstack);
1750 savestack_ix -= 8; /* Unprotect save in progress. */
1752 cxstack[cxstack_ix].cx_type = type;
1763 op = myop; /* Apparently not needed... */
1765 Sv = tSv; /* Restore global temporaries. */