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.
35 #define VTBL this->*vtbl
42 typedef struct magic_state MGS;
44 static void restore_magic _((void *p));
50 save_magic(MGS *mgs, SV *sv)
52 assert(SvMAGICAL(sv));
55 mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv);
56 SAVEDESTRUCTOR(restore_magic, mgs);
60 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
64 restore_magic(void *p)
69 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
72 SvFLAGS(sv) |= mgs->mgs_flags;
76 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
84 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
85 MGVTBL* vtbl = mg->mg_virtual;
87 if ((vtbl->svt_get != NULL) && !(mg->mg_flags & MGf_GSKIP))
91 if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || (vtbl->svt_clear != NULL))
106 save_magic(&mgs, sv);
109 while ((mg = *mgp) != 0) {
110 MGVTBL* vtbl = mg->mg_virtual;
111 if (!(mg->mg_flags & MGf_GSKIP) && vtbl && (vtbl->svt_get != NULL)) {
112 (VTBL->svt_get)(sv, mg);
113 /* Ignore this magic if it's been deleted */
114 if ((mg == (mgp_valid ? *mgp : SvMAGIC(sv))) &&
115 (mg->mg_flags & MGf_GSKIP))
118 /* Advance to next magic (complicated by possible deletion) */
119 if (mg == (mgp_valid ? *mgp : SvMAGIC(sv))) {
120 mgp = &mg->mg_moremagic;
124 mgp = &SvMAGIC(sv); /* Re-establish pointer after sv_upgrade */
139 save_magic(&mgs, sv);
141 for (mg = SvMAGIC(sv); mg; mg = nextmg) {
142 MGVTBL* vtbl = mg->mg_virtual;
143 nextmg = mg->mg_moremagic; /* it may delete itself */
144 if (mg->mg_flags & MGf_GSKIP) {
145 mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */
148 if (vtbl && (vtbl->svt_set != NULL))
149 (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 != NULL)) {
169 save_magic(&mgs, sv);
170 /* omit MGf_GSKIP -- not changed here */
171 len = (VTBL->svt_len)(sv, mg);
177 junk = SvPV(sv, len);
187 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
188 MGVTBL* vtbl = mg->mg_virtual;
189 if (vtbl && (vtbl->svt_len != NULL)) {
192 /* omit MGf_GSKIP -- not changed here */
193 len = (VTBL->svt_len)(sv, mg);
201 len = AvFILLp((AV *) sv); /* Fallback to non-tied array */
206 croak("Size magic not implemented");
219 save_magic(&mgs, sv);
221 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
222 MGVTBL* vtbl = mg->mg_virtual;
223 /* omit GSKIP -- never set here */
225 if (vtbl && (vtbl->svt_clear != NULL))
226 (VTBL->svt_clear)(sv, mg);
234 mg_find(SV *sv, int type)
237 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
238 if (mg->mg_type == type)
245 mg_copy(SV *sv, SV *nsv, char *key, I32 klen)
249 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
250 if (isUPPER(mg->mg_type)) {
251 sv_magic(nsv, mg->mg_obj, toLOWER(mg->mg_type), key, klen);
263 for (mg = SvMAGIC(sv); mg; mg = moremagic) {
264 MGVTBL* vtbl = mg->mg_virtual;
265 moremagic = mg->mg_moremagic;
266 if (vtbl && (vtbl->svt_free != NULL))
267 (VTBL->svt_free)(sv, mg);
268 if (mg->mg_ptr && mg->mg_type != 'g')
270 Safefree(mg->mg_ptr);
271 else if (mg->mg_len == HEf_SVKEY)
272 SvREFCNT_dec((SV*)mg->mg_ptr);
273 if (mg->mg_flags & MGf_REFCOUNTED)
274 SvREFCNT_dec(mg->mg_obj);
281 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
286 magic_regdata_cnt(SV *sv, MAGIC *mg)
294 if (PL_curpm && (rx = PL_curpm->op_pmregexp))
295 return rx->lastparen;
300 magic_regdatum_get(SV *sv, MAGIC *mg)
309 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
313 if (paren <= rx->nparens &&
314 (s = rx->startp[paren]) &&
315 (t = rx->endp[paren]))
317 if (mg->mg_obj) /* @+ */
328 magic_len(SV *sv, MAGIC *mg)
337 switch (*mg->mg_ptr) {
338 case '1': case '2': case '3': case '4':
339 case '5': case '6': case '7': case '8': case '9': case '&':
340 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
341 paren = atoi(mg->mg_ptr);
343 if (paren <= rx->nparens &&
344 (s = rx->startp[paren]) &&
345 (t = rx->endp[paren]))
354 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
355 paren = rx->lastparen;
361 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
362 if ((s = rx->subbeg) && rx->startp[0]) {
363 i = rx->startp[0] - s;
370 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
371 if (rx->subend && (s = rx->endp[0])) {
379 return (STRLEN)PL_ofslen;
381 return (STRLEN)PL_orslen;
384 if (!SvPOK(sv) && SvNIOK(sv))
401 static char buffer[50] ;
406 sprintf(buffer, "Buffer %d, Length = %d - ", sv, SvCUR(sv)) ;
408 for (i = 0; i < SvCUR(sv) ; ++ i) {
409 sprintf (buf1, " %x [%x]", (p+i), *(p+i)) ;
410 strcat(buffer, buf1) ;
420 magic_get(SV *sv, MAGIC *mg)
429 switch (*mg->mg_ptr) {
430 case '\001': /* ^A */
431 sv_setsv(sv, PL_bodytarget);
433 case '\002': /* ^B */
434 /* printf("magic_get $^B: ") ; */
435 if (curcop->cop_warnings == WARN_NONE)
436 /* printf("WARN_NONE\n"), */
437 sv_setpvn(sv, WARN_NONEstring, WARNsize) ;
438 else if (curcop->cop_warnings == WARN_ALL)
439 /* printf("WARN_ALL\n"), */
440 sv_setpvn(sv, WARN_ALLstring, WARNsize) ;
442 /* printf("some %s\n", printW(curcop->cop_warnings)), */
443 sv_setsv(sv, curcop->cop_warnings);
445 case '\004': /* ^D */
446 sv_setiv(sv, (IV)(PL_debug & 32767));
448 case '\005': /* ^E */
451 # include <descrip.h>
452 # include <starlet.h>
454 $DESCRIPTOR(msgdsc,msg);
455 sv_setnv(sv,(double) vaxc$errno);
456 if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1)
457 sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length);
463 if (!(_emx_env & 0x200)) { /* Under DOS */
464 sv_setnv(sv, (double)errno);
465 sv_setpv(sv, errno ? Strerror(errno) : "");
467 if (errno != errno_isOS2)
468 Perl_rc = _syserrno();
469 sv_setnv(sv, (double)Perl_rc);
470 sv_setpv(sv, os2error(Perl_rc));
475 DWORD dwErr = GetLastError();
476 sv_setnv(sv, (double)dwErr);
482 PerlProc_GetSysMsg(sMsg, dwLen, dwErr);
483 sv_setpvn(sv, sMsg, dwLen);
484 PerlProc_FreeBuf(sMsg);
486 win32_str_os_error(sv, dwErr);
494 sv_setnv(sv, (double)errno);
495 sv_setpv(sv, errno ? Strerror(errno) : "");
499 SvNOK_on(sv); /* what a wonderful hack! */
501 case '\006': /* ^F */
502 sv_setiv(sv, (IV)PL_maxsysfd);
504 case '\010': /* ^H */
505 sv_setiv(sv, (IV)PL_hints);
507 case '\011': /* ^I */ /* NOT \t in EBCDIC */
509 sv_setpv(sv, PL_inplace);
511 sv_setsv(sv, &PL_sv_undef);
513 case '\017': /* ^O */
514 sv_setpv(sv, PL_osname);
516 case '\020': /* ^P */
517 sv_setiv(sv, (IV)PL_perldb);
519 case '\023': /* ^S */
522 if (PL_lex_state != LEX_NOTPARSING)
530 case '\024': /* ^T */
532 sv_setnv(sv, PL_basetime);
534 sv_setiv(sv, (IV)PL_basetime);
537 case '\027': /* ^W */
538 sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) == G_WARN_ON));
540 case '1': case '2': case '3': case '4':
541 case '5': case '6': case '7': case '8': case '9': case '&':
542 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
544 * Pre-threads, this was paren = atoi(GvENAME((GV*)mg->mg_obj));
545 * XXX Does the new way break anything?
547 paren = atoi(mg->mg_ptr);
549 if (paren <= rx->nparens &&
550 (s = rx->startp[paren]) &&
551 (t = rx->endp[paren]))
558 was_tainted = PL_tainted;
563 PL_tainted = (was_tainted || RX_MATCH_TAINTED(rx));
568 sv_setsv(sv,&PL_sv_undef);
571 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
572 paren = rx->lastparen;
576 sv_setsv(sv,&PL_sv_undef);
579 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
580 if ((s = rx->subbeg) && rx->startp[0]) {
581 i = rx->startp[0] - s;
585 sv_setsv(sv,&PL_sv_undef);
588 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
589 if (rx->subend && (s = rx->endp[0])) {
594 sv_setsv(sv,&PL_sv_undef);
598 if (GvIO(PL_last_in_gv)) {
599 sv_setiv(sv, (IV)IoLINES(GvIO(PL_last_in_gv)));
605 sv_setiv(sv, (IV)STATUS_CURRENT);
606 #ifdef COMPLEX_STATUS
607 LvTARGOFF(sv) = PL_statusvalue;
608 LvTARGLEN(sv) = PL_statusvalue_vms;
613 s = IoTOP_NAME(GvIOp(PL_defoutgv));
617 sv_setpv(sv,GvENAME(PL_defoutgv));
622 s = IoFMT_NAME(GvIOp(PL_defoutgv));
624 s = GvENAME(PL_defoutgv);
629 sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv)));
632 sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv)));
635 sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv)));
643 WITH_THR(sv_setiv(sv, (IV)PL_curcop->cop_arybase));
646 sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 );
649 sv_setpvn(sv,PL_ofs,PL_ofslen);
652 sv_setpvn(sv,PL_ors,PL_orslen);
655 sv_setpv(sv,PL_ofmt);
659 sv_setnv(sv, (double)((errno == EVMSERR) ? vaxc$errno : errno));
660 sv_setpv(sv, errno ? Strerror(errno) : "");
663 int saveerrno = errno;
664 sv_setnv(sv, (double)errno);
666 if (errno == errno_isOS2) sv_setpv(sv, os2error(Perl_rc));
669 sv_setpv(sv, errno ? Strerror(errno) : "");
673 SvNOK_on(sv); /* what a wonderful hack! */
676 sv_setiv(sv, (IV)PL_uid);
679 sv_setiv(sv, (IV)PL_euid);
682 sv_setiv(sv, (IV)PL_gid);
683 sv_setpvf(sv, "%Vd", (IV)PL_gid);
686 sv_setiv(sv, (IV)PL_egid);
687 sv_setpvf(sv, "%Vd", (IV)PL_egid);
691 Groups_t gary[NGROUPS];
692 i = getgroups(NGROUPS,gary);
694 sv_catpvf(sv, " %Vd", (IV)gary[i]);
697 SvIOK_on(sv); /* what a wonderful hack! */
705 sv_setsv(sv, thr->errsv);
707 #endif /* USE_THREADS */
713 magic_getuvar(SV *sv, MAGIC *mg)
715 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
717 if (uf && uf->uf_val)
718 (*uf->uf_val)(uf->uf_index, sv);
723 magic_setenv(SV *sv, MAGIC *mg)
734 #ifdef DYNAMIC_ENV_FETCH
735 /* We just undefd an environment var. Is a replacement */
736 /* waiting in the wings? */
739 if ((valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE)))
740 s = SvPV(*valp, len);
744 #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS)
745 /* And you'll never guess what the dog had */
746 /* in its mouth... */
748 MgTAINTEDDIR_off(mg);
750 if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) {
751 char pathbuf[256], eltbuf[256], *cp, *elt = s;
755 do { /* DCL$PATH may be a search list */
756 while (1) { /* as may dev portion of any element */
757 if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) {
758 if ( *(cp+1) == '.' || *(cp+1) == '-' ||
759 cando_by_name(S_IWUSR,0,elt) ) {
764 if ((cp = strchr(elt, ':')) != Nullch)
766 if (my_trnlnm(elt, eltbuf, j++))
772 } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf));
775 if (s && klen == 4 && strEQ(ptr,"PATH")) {
776 char *strend = s + len;
781 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf,
784 if (i >= sizeof tmpbuf /* too long -- assume the worst */
786 || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) {
793 #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */
799 magic_clearenv(SV *sv, MAGIC *mg)
801 my_setenv(MgPV(mg,PL_na),Nullch);
806 magic_set_all_env(SV *sv, MAGIC *mg)
809 die("Can't make list assignment to %%ENV on this system");
814 magic_clear_all_env(sv,mg);
815 hv_iterinit((HV*)sv);
816 while (entry = hv_iternext((HV*)sv)) {
818 my_setenv(hv_iterkey(entry, &keylen),
819 SvPV(hv_iterval((HV*)sv, entry), PL_na));
827 magic_clear_all_env(SV *sv, MAGIC *mg)
830 die("Can't make list assignment to %%ENV on this system");
833 char *envv = GetEnvironmentStrings();
837 char *end = strchr(cur,'=');
838 if (end && end != cur) {
840 my_setenv(cur,Nullch);
842 cur += strlen(end+1)+1;
844 else if ((len = strlen(cur)))
847 FreeEnvironmentStrings(envv);
851 if (environ == PL_origenviron)
852 New(901, environ, 1, char*);
854 for (i = 0; environ[i]; i++)
855 Safefree(environ[i]);
864 magic_getsig(SV *sv, MAGIC *mg)
867 /* Are we fetching a signal entry? */
868 i = whichsig(MgPV(mg,PL_na));
871 sv_setsv(sv,psig_ptr[i]);
873 Sighandler_t sigstate = rsignal_state(i);
875 /* cache state so we don't fetch it again */
876 if(sigstate == SIG_IGN)
877 sv_setpv(sv,"IGNORE");
879 sv_setsv(sv,&PL_sv_undef);
880 psig_ptr[i] = SvREFCNT_inc(sv);
887 magic_clearsig(SV *sv, MAGIC *mg)
890 /* Are we clearing a signal entry? */
891 i = whichsig(MgPV(mg,PL_na));
894 SvREFCNT_dec(psig_ptr[i]);
898 SvREFCNT_dec(psig_name[i]);
906 magic_setsig(SV *sv, MAGIC *mg)
915 if (strEQ(s,"__DIE__"))
917 else if (strEQ(s,"__WARN__"))
919 else if (strEQ(s,"__PARSE__"))
922 croak("No such hook: %s", s);
930 i = whichsig(s); /* ...no, a brick */
932 if (ckWARN(WARN_SIGNAL) || strEQ(s,"ALARM"))
933 warner(WARN_SIGNAL, "No such signal: SIG%s", s);
936 SvREFCNT_dec(psig_name[i]);
937 SvREFCNT_dec(psig_ptr[i]);
938 psig_ptr[i] = SvREFCNT_inc(sv);
939 SvTEMP_off(sv); /* Make sure it doesn't go away on us */
940 psig_name[i] = newSVpv(s, strlen(s));
941 SvREADONLY_on(psig_name[i]);
943 if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) {
945 (void)rsignal(i, PL_sighandlerp);
947 *svp = SvREFCNT_inc(sv);
950 s = SvPV_force(sv,PL_na);
951 if (strEQ(s,"IGNORE")) {
953 (void)rsignal(i, SIG_IGN);
957 else if (strEQ(s,"DEFAULT") || !*s) {
959 (void)rsignal(i, SIG_DFL);
965 * We should warn if HINT_STRICT_REFS, but without
966 * access to a known hint bit in a known OP, we can't
967 * tell whether HINT_STRICT_REFS is in force or not.
969 if (!strchr(s,':') && !strchr(s,'\''))
970 sv_setpv(sv, form("main::%s", s));
972 (void)rsignal(i, PL_sighandlerp);
974 *svp = SvREFCNT_inc(sv);
980 magic_setisa(SV *sv, MAGIC *mg)
989 magic_setamagic(SV *sv, MAGIC *mg)
991 /* HV_badAMAGIC_on(Sv_STASH(sv)); */
992 PL_amagic_generation++;
996 #endif /* OVERLOAD */
999 magic_getnkeys(SV *sv, MAGIC *mg)
1001 HV *hv = (HV*)LvTARG(sv);
1006 (void) hv_iterinit(hv);
1007 if (!SvRMAGICAL(hv) || !mg_find((SV*)hv,'P'))
1011 while (entry = hv_iternext(hv)) {
1017 sv_setiv(sv, (IV)i);
1022 magic_setnkeys(SV *sv, MAGIC *mg)
1025 hv_ksplit((HV*)LvTARG(sv), SvIV(sv));
1030 /* caller is responsible for stack switching/cleanup */
1032 magic_methcall(MAGIC *mg, char *meth, I32 flags, int n, SV *val)
1041 if (mg->mg_len >= 0)
1042 PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
1043 else if (mg->mg_len == HEf_SVKEY)
1044 PUSHs((SV*)mg->mg_ptr);
1046 else if (mg->mg_type == 'p') {
1047 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
1055 return perl_call_method(meth, flags);
1059 magic_methpack(SV *sv, MAGIC *mg, char *meth)
1065 PUSHSTACKi(PERLSI_MAGIC);
1067 if (magic_methcall(mg, meth, G_SCALAR, 2, NULL)) {
1068 sv_setsv(sv, *PL_stack_sp--);
1078 magic_getpack(SV *sv, MAGIC *mg)
1080 magic_methpack(sv,mg,"FETCH");
1082 mg->mg_flags |= MGf_GSKIP;
1087 magic_setpack(SV *sv, MAGIC *mg)
1091 PUSHSTACKi(PERLSI_MAGIC);
1092 magic_methcall(mg, "STORE", G_SCALAR|G_DISCARD, 3, sv);
1099 magic_clearpack(SV *sv, MAGIC *mg)
1101 return magic_methpack(sv,mg,"DELETE");
1106 magic_sizepack(SV *sv, MAGIC *mg)
1113 PUSHSTACKi(PERLSI_MAGIC);
1114 if (magic_methcall(mg, "FETCHSIZE", G_SCALAR, 2, NULL)) {
1115 sv = *PL_stack_sp--;
1116 retval = (U32) SvIV(sv)-1;
1124 int magic_wipepack(SV *sv, MAGIC *mg)
1129 PUSHSTACKi(PERLSI_MAGIC);
1133 perl_call_method("CLEAR", G_SCALAR|G_DISCARD);
1140 magic_nextpack(SV *sv, MAGIC *mg, SV *key)
1143 char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
1147 PUSHSTACKi(PERLSI_MAGIC);
1155 if (perl_call_method(meth, G_SCALAR))
1156 sv_setsv(key, *PL_stack_sp--);
1165 magic_existspack(SV *sv, MAGIC *mg)
1167 return magic_methpack(sv,mg,"EXISTS");
1171 magic_setdbline(SV *sv, MAGIC *mg)
1181 svp = av_fetch(GvAV(gv),
1182 atoi(MgPV(mg,PL_na)), FALSE);
1183 if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp)))
1186 warn("Can't break at that line\n");
1191 magic_getarylen(SV *sv, MAGIC *mg)
1194 sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + PL_curcop->cop_arybase);
1199 magic_setarylen(SV *sv, MAGIC *mg)
1202 av_fill((AV*)mg->mg_obj, SvIV(sv) - PL_curcop->cop_arybase);
1207 magic_getpos(SV *sv, MAGIC *mg)
1209 SV* lsv = LvTARG(sv);
1211 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) {
1212 mg = mg_find(lsv, 'g');
1213 if (mg && mg->mg_len >= 0) {
1217 sv_pos_b2u(lsv, &i);
1218 sv_setiv(sv, i + PL_curcop->cop_arybase);
1227 magic_setpos(SV *sv, MAGIC *mg)
1229 SV* lsv = LvTARG(sv);
1237 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv))
1238 mg = mg_find(lsv, 'g');
1242 sv_magic(lsv, (SV*)0, 'g', Nullch, 0);
1243 mg = mg_find(lsv, 'g');
1245 else if (!SvOK(sv)) {
1249 len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv);
1251 pos = SvIV(sv) - PL_curcop->cop_arybase;
1254 ulen = sv_len_utf8(lsv);
1271 sv_pos_u2b(lsv, &p, 0);
1276 mg->mg_flags &= ~MGf_MINMATCH;
1282 magic_getglob(SV *sv, MAGIC *mg)
1284 if (SvFAKE(sv)) { /* FAKE globs can get coerced */
1286 gv_efullname3(sv,((GV*)sv), "*");
1290 gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */
1295 magic_setglob(SV *sv, MAGIC *mg)
1302 s = SvPV(sv, PL_na);
1303 if (*s == '*' && s[1])
1305 gv = gv_fetchpv(s,TRUE, SVt_PVGV);
1310 GvGP(sv) = gp_ref(GvGP(gv));
1315 magic_getsubstr(SV *sv, MAGIC *mg)
1318 SV *lsv = LvTARG(sv);
1319 char *tmps = SvPV(lsv,len);
1320 I32 offs = LvTARGOFF(sv);
1321 I32 rem = LvTARGLEN(sv);
1325 if (rem + offs > len)
1327 sv_setpvn(sv, tmps + offs, (STRLEN)rem);
1332 magic_setsubstr(SV *sv, MAGIC *mg)
1335 char *tmps = SvPV(sv,len);
1336 sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len);
1341 magic_gettaint(SV *sv, MAGIC *mg)
1344 TAINT_IF((mg->mg_len & 1) ||
1345 (mg->mg_len & 2) && mg->mg_obj == sv); /* kludge */
1350 magic_settaint(SV *sv, MAGIC *mg)
1353 if (PL_localizing) {
1354 if (PL_localizing == 1)
1359 else if (PL_tainted)
1367 magic_getvec(SV *sv, MAGIC *mg)
1369 SV *lsv = LvTARG(sv);
1371 unsigned long retnum;
1381 s = (unsigned char *) SvPV(lsv, lsvlen);
1382 offset = LvTARGOFF(sv);
1383 size = LvTARGLEN(sv);
1384 len = (offset + size + 7) / 8;
1386 /* Copied from pp_vec() */
1394 if (offset >= lsvlen)
1397 retnum = (unsigned long) s[offset] << 8;
1399 else if (size == 32) {
1400 if (offset >= lsvlen)
1402 else if (offset + 1 >= lsvlen)
1403 retnum = (unsigned long) s[offset] << 24;
1404 else if (offset + 2 >= lsvlen)
1405 retnum = ((unsigned long) s[offset] << 24) +
1406 ((unsigned long) s[offset + 1] << 16);
1408 retnum = ((unsigned long) s[offset] << 24) +
1409 ((unsigned long) s[offset + 1] << 16) +
1410 (s[offset + 2] << 8);
1415 retnum = (s[offset >> 3] >> (offset & 7)) & ((1 << size) - 1);
1420 else if (size == 16)
1421 retnum = ((unsigned long) s[offset] << 8) + s[offset+1];
1422 else if (size == 32)
1423 retnum = ((unsigned long) s[offset] << 24) +
1424 ((unsigned long) s[offset + 1] << 16) +
1425 (s[offset + 2] << 8) + s[offset+3];
1428 sv_setuv(sv, (UV)retnum);
1433 magic_setvec(SV *sv, MAGIC *mg)
1435 do_vecset(sv); /* XXX slurp this routine */
1440 magic_getdefelem(SV *sv, MAGIC *mg)
1443 if (LvTARGLEN(sv)) {
1445 SV *ahv = LvTARG(sv);
1446 if (SvTYPE(ahv) == SVt_PVHV) {
1447 HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, FALSE, 0);
1452 SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, FALSE, 0);
1458 AV* av = (AV*)LvTARG(sv);
1459 if ((I32)LvTARGOFF(sv) <= AvFILL(av))
1460 targ = AvARRAY(av)[LvTARGOFF(sv)];
1462 if (targ && targ != &PL_sv_undef) {
1463 dTHR; /* just for SvREFCNT_dec */
1464 /* somebody else defined it for us */
1465 SvREFCNT_dec(LvTARG(sv));
1466 LvTARG(sv) = SvREFCNT_inc(targ);
1468 SvREFCNT_dec(mg->mg_obj);
1469 mg->mg_obj = Nullsv;
1470 mg->mg_flags &= ~MGf_REFCOUNTED;
1475 sv_setsv(sv, targ ? targ : &PL_sv_undef);
1480 magic_setdefelem(SV *sv, MAGIC *mg)
1485 sv_setsv(LvTARG(sv), sv);
1486 SvSETMAGIC(LvTARG(sv));
1492 vivify_defelem(SV *sv)
1494 dTHR; /* just for SvREFCNT_inc and SvREFCNT_dec*/
1498 if (!LvTARGLEN(sv) || !(mg = mg_find(sv, 'y')))
1501 SV *ahv = LvTARG(sv);
1502 if (SvTYPE(ahv) == SVt_PVHV) {
1503 HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0);
1508 SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, TRUE, 0);
1512 if (!value || value == &PL_sv_undef)
1513 croak(no_helem, SvPV(mg->mg_obj, PL_na));
1516 AV* av = (AV*)LvTARG(sv);
1517 if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av))
1518 LvTARG(sv) = Nullsv; /* array can't be extended */
1520 SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE);
1521 if (!svp || (value = *svp) == &PL_sv_undef)
1522 croak(no_aelem, (I32)LvTARGOFF(sv));
1525 (void)SvREFCNT_inc(value);
1526 SvREFCNT_dec(LvTARG(sv));
1529 SvREFCNT_dec(mg->mg_obj);
1530 mg->mg_obj = Nullsv;
1531 mg->mg_flags &= ~MGf_REFCOUNTED;
1535 magic_setmglob(SV *sv, MAGIC *mg)
1543 magic_setbm(SV *sv, MAGIC *mg)
1545 sv_unmagic(sv, 'B');
1551 magic_setfm(SV *sv, MAGIC *mg)
1553 sv_unmagic(sv, 'f');
1559 magic_setuvar(SV *sv, MAGIC *mg)
1561 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
1563 if (uf && uf->uf_set)
1564 (*uf->uf_set)(uf->uf_index, sv);
1569 magic_freeregexp(SV *sv, MAGIC *mg)
1571 regexp *re = (regexp *)mg->mg_obj;
1576 #ifdef USE_LOCALE_COLLATE
1578 magic_setcollxfrm(SV *sv, MAGIC *mg)
1581 * René Descartes said "I think not."
1582 * and vanished with a faint plop.
1585 Safefree(mg->mg_ptr);
1591 #endif /* USE_LOCALE_COLLATE */
1594 magic_set(SV *sv, MAGIC *mg)
1600 switch (*mg->mg_ptr) {
1601 case '\001': /* ^A */
1602 sv_setsv(PL_bodytarget, sv);
1604 case '\002': /* ^B */
1605 if ( ! (PL_dowarn & G_WARN_ALL_MASK)) {
1606 if (memEQ(SvPVX(sv), WARN_ALLstring, WARNsize))
1607 compiling.cop_warnings = WARN_ALL;
1608 else if (memEQ(SvPVX(sv), WARN_NONEstring, WARNsize))
1609 compiling.cop_warnings = WARN_NONE;
1611 if (compiling.cop_warnings != WARN_NONE &&
1612 compiling.cop_warnings != WARN_ALL)
1613 sv_setsv(compiling.cop_warnings, sv);
1615 compiling.cop_warnings = newSVsv(sv) ;
1619 case '\004': /* ^D */
1620 PL_debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000;
1621 DEBUG_x(dump_all());
1623 case '\005': /* ^E */
1625 set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1628 SetLastError( SvIV(sv) );
1630 /* will anyone ever use this? */
1631 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4);
1635 case '\006': /* ^F */
1636 PL_maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1638 case '\010': /* ^H */
1639 PL_hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1641 case '\011': /* ^I */ /* NOT \t in EBCDIC */
1643 Safefree(PL_inplace);
1645 PL_inplace = savepv(SvPV(sv,PL_na));
1647 PL_inplace = Nullch;
1649 case '\017': /* ^O */
1651 Safefree(PL_osname);
1653 PL_osname = savepv(SvPV(sv,PL_na));
1657 case '\020': /* ^P */
1658 PL_perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1660 case '\024': /* ^T */
1662 PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv));
1664 PL_basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1667 case '\027': /* ^W */
1668 if ( ! (PL_dowarn & G_WARN_ALL_MASK)) {
1669 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1670 PL_dowarn = (i ? G_WARN_ON : G_WARN_OFF) ;
1674 if (PL_localizing) {
1675 if (PL_localizing == 1)
1676 save_sptr((SV**)&PL_last_in_gv);
1678 else if (SvOK(sv) && GvIO(PL_last_in_gv))
1679 IoLINES(GvIOp(PL_last_in_gv)) = (long)SvIV(sv);
1682 Safefree(IoTOP_NAME(GvIOp(PL_defoutgv)));
1683 IoTOP_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,PL_na));
1684 IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1687 Safefree(IoFMT_NAME(GvIOp(PL_defoutgv)));
1688 IoFMT_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,PL_na));
1689 IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1692 IoPAGE_LEN(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1695 IoLINES_LEFT(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1696 if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L)
1697 IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L;
1700 IoPAGE(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1704 IO *io = GvIOp(PL_defoutgv);
1705 if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0)
1706 IoFLAGS(io) &= ~IOf_FLUSH;
1708 if (!(IoFLAGS(io) & IOf_FLUSH)) {
1709 PerlIO *ofp = IoOFP(io);
1711 (void)PerlIO_flush(ofp);
1712 IoFLAGS(io) |= IOf_FLUSH;
1718 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1719 PL_multiline = (i != 0);
1722 SvREFCNT_dec(PL_nrs);
1723 PL_nrs = newSVsv(sv);
1724 SvREFCNT_dec(PL_rs);
1725 PL_rs = SvREFCNT_inc(PL_nrs);
1730 if (SvOK(sv) || SvGMAGICAL(sv))
1731 PL_ors = savepv(SvPV(sv,PL_orslen));
1740 PL_ofs = savepv(SvPV(sv, PL_ofslen));
1745 PL_ofmt = savepv(SvPV(sv,PL_na));
1748 PL_compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1751 #ifdef COMPLEX_STATUS
1752 if (PL_localizing == 2) {
1753 PL_statusvalue = LvTARGOFF(sv);
1754 PL_statusvalue_vms = LvTARGLEN(sv);
1758 #ifdef VMSISH_STATUS
1760 STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)));
1763 STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1766 SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0,
1767 (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno);
1770 PL_uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1771 if (PL_delaymagic) {
1772 PL_delaymagic |= DM_RUID;
1773 break; /* don't do magic till later */
1776 (void)setruid((Uid_t)PL_uid);
1779 (void)setreuid((Uid_t)PL_uid, (Uid_t)-1);
1781 #ifdef HAS_SETRESUID
1782 (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1);
1784 if (PL_uid == PL_euid) /* special case $< = $> */
1785 (void)PerlProc_setuid(PL_uid);
1787 PL_uid = (I32)PerlProc_getuid();
1788 croak("setruid() not implemented");
1793 PL_uid = (I32)PerlProc_getuid();
1794 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
1797 PL_euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1798 if (PL_delaymagic) {
1799 PL_delaymagic |= DM_EUID;
1800 break; /* don't do magic till later */
1803 (void)seteuid((Uid_t)PL_euid);
1806 (void)setreuid((Uid_t)-1, (Uid_t)PL_euid);
1808 #ifdef HAS_SETRESUID
1809 (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1);
1811 if (PL_euid == PL_uid) /* special case $> = $< */
1812 PerlProc_setuid(PL_euid);
1814 PL_euid = (I32)PerlProc_geteuid();
1815 croak("seteuid() not implemented");
1820 PL_euid = (I32)PerlProc_geteuid();
1821 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
1824 PL_gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1825 if (PL_delaymagic) {
1826 PL_delaymagic |= DM_RGID;
1827 break; /* don't do magic till later */
1830 (void)setrgid((Gid_t)PL_gid);
1833 (void)setregid((Gid_t)PL_gid, (Gid_t)-1);
1835 #ifdef HAS_SETRESGID
1836 (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1);
1838 if (PL_gid == PL_egid) /* special case $( = $) */
1839 (void)PerlProc_setgid(PL_gid);
1841 PL_gid = (I32)PerlProc_getgid();
1842 croak("setrgid() not implemented");
1847 PL_gid = (I32)PerlProc_getgid();
1848 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
1851 #ifdef HAS_SETGROUPS
1853 char *p = SvPV(sv, PL_na);
1854 Groups_t gary[NGROUPS];
1856 SET_NUMERIC_STANDARD();
1859 PL_egid = I_V(atof(p));
1860 for (i = 0; i < NGROUPS; ++i) {
1861 while (*p && !isSPACE(*p))
1867 gary[i] = I_V(atof(p));
1870 (void)setgroups(i, gary);
1872 #else /* HAS_SETGROUPS */
1873 PL_egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1874 #endif /* HAS_SETGROUPS */
1875 if (PL_delaymagic) {
1876 PL_delaymagic |= DM_EGID;
1877 break; /* don't do magic till later */
1880 (void)setegid((Gid_t)PL_egid);
1883 (void)setregid((Gid_t)-1, (Gid_t)PL_egid);
1885 #ifdef HAS_SETRESGID
1886 (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1);
1888 if (PL_egid == PL_gid) /* special case $) = $( */
1889 (void)PerlProc_setgid(PL_egid);
1891 PL_egid = (I32)PerlProc_getegid();
1892 croak("setegid() not implemented");
1897 PL_egid = (I32)PerlProc_getegid();
1898 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
1901 PL_chopset = SvPV_force(sv,PL_na);
1907 /* See if all the arguments are contiguous in memory */
1908 for (i = 1; i < PL_origargc; i++) {
1909 if (PL_origargv[i] == s + 1
1911 || PL_origargv[i] == s + 2
1914 s += strlen(++s); /* this one is ok too */
1918 /* can grab env area too? */
1919 if (PL_origenviron && (PL_origenviron[0] == s + 1
1921 || (PL_origenviron[0] == s + 9 && (s += 8))
1924 my_setenv("NoNe SuCh", Nullch);
1925 /* force copy of environment */
1926 for (i = 0; PL_origenviron[i]; i++)
1927 if (PL_origenviron[i] == s + 1)
1932 PL_origalen = s - PL_origargv[0];
1934 s = SvPV_force(sv,len);
1936 if (i >= PL_origalen) {
1938 /* don't allow system to limit $0 seen by script */
1939 /* SvCUR_set(sv, i); *SvEND(sv) = '\0'; */
1940 Copy(s, PL_origargv[0], i, char);
1941 s = PL_origargv[0]+i;
1945 Copy(s, PL_origargv[0], i, char);
1946 s = PL_origargv[0]+i;
1948 while (++i < PL_origalen)
1950 s = PL_origargv[0]+i;
1951 for (i = 1; i < PL_origargc; i++)
1952 PL_origargv[i] = Nullch;
1957 sv_setsv(thr->errsv, sv);
1959 #endif /* USE_THREADS */
1966 magic_mutexfree(SV *sv, MAGIC *mg)
1969 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "0x%lx: magic_mutexfree 0x%lx\n",
1970 (unsigned long)thr, (unsigned long)sv);)
1972 croak("panic: magic_mutexfree");
1973 MUTEX_DESTROY(MgMUTEXP(mg));
1974 COND_DESTROY(MgCONDP(mg));
1978 #endif /* USE_THREADS */
1983 register char **sigv;
1985 for (sigv = sig_name+1; *sigv; sigv++)
1986 if (strEQ(sig,*sigv))
1987 return sig_num[sigv - sig_name];
1989 if (strEQ(sig,"CHLD"))
1993 if (strEQ(sig,"CLD"))
2002 unwind_handler_stack(void *p)
2005 U32 flags = *(U32*)p;
2008 PL_savestack_ix -= 5; /* Unprotect save in progress. */
2009 /* cxstack_ix-- Not needed, die already unwound it. */
2011 SvREFCNT_dec(sig_sv);
2020 SV *sv, *tSv = PL_Sv;
2024 I32 o_save_i = PL_savestack_ix, type;
2027 if (PL_savestack_ix + 15 <= PL_savestack_max)
2029 if (PL_markstack_ptr < PL_markstack_max - 2)
2031 if (PL_retstack_ix < PL_retstack_max - 2)
2033 if (PL_scopestack_ix < PL_scopestack_max - 3)
2037 die("Signal SIG%s received, but no signal handler set.\n",
2040 /* Max number of items pushed there is 3*n or 4. We cannot fix
2041 infinity, so we fix 4 (in fact 5): */
2043 PL_savestack_ix += 5; /* Protect save in progress. */
2044 o_save_i = PL_savestack_ix;
2045 SAVEDESTRUCTOR(unwind_handler_stack, (void*)&flags);
2048 PL_markstack_ptr++; /* Protect mark. */
2051 PL_retstack[PL_retstack_ix] = NULL;
2054 PL_scopestack_ix += 1;
2055 /* sv_2cv is too complicated, try a simpler variant first: */
2056 if (!SvROK(psig_ptr[sig]) || !(cv = (CV*)SvRV(psig_ptr[sig]))
2057 || SvTYPE(cv) != SVt_PVCV)
2058 cv = sv_2cv(psig_ptr[sig],&st,&gv,TRUE);
2060 if (!cv || !CvROOT(cv)) {
2061 if (ckWARN(WARN_SIGNAL))
2062 warner(WARN_SIGNAL, "SIG%s handler \"%s\" not defined.\n",
2063 sig_name[sig], (gv ? GvENAME(gv)
2070 if(psig_name[sig]) {
2071 sv = SvREFCNT_inc(psig_name[sig]);
2075 sv = sv_newmortal();
2076 sv_setpv(sv,sig_name[sig]);
2079 PUSHSTACKi(PERLSI_SIGNAL);
2084 perl_call_sv((SV*)cv, G_DISCARD);
2089 PL_savestack_ix -= 8; /* Unprotect save in progress. */
2095 PL_scopestack_ix -= 1;
2098 PL_op = myop; /* Apparently not needed... */
2100 PL_Sv = tSv; /* Restore global temporaries. */