3 * Copyright (c) 1991-1999, 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."
19 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
24 #if defined(HAS_GETGROUPS) || defined(HAS_SETGROUPS)
31 # define VTBL this->*vtbl
37 * Use the "DESTRUCTOR" scope cleanup to reinstate magic.
45 /* MGS is typedef'ed to struct magic_state in perl.h */
48 S_save_magic(pTHX_ I32 mgs_ix, SV *sv)
52 assert(SvMAGICAL(sv));
54 SAVEDESTRUCTOR(S_restore_magic, (void*)mgs_ix);
56 mgs = SSPTR(mgs_ix, MGS*);
58 mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv);
59 mgs->mgs_ss_ix = PL_savestack_ix; /* points after the saved destructor */
63 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
67 S_restore_magic(pTHX_ void *p)
70 MGS* mgs = SSPTR((I32)p, MGS*);
76 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
79 SvFLAGS(sv) |= mgs->mgs_flags;
83 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
86 mgs->mgs_sv = NULL; /* mark the MGS structure as restored */
88 /* If we're still on top of the stack, pop us off. (That condition
89 * will be satisfied if restore_magic was called explicitly, but *not*
90 * if it's being called via leave_scope.)
91 * The reason for doing this is that otherwise, things like sv_2cv()
92 * may leave alloc gunk on the savestack, and some code
93 * (e.g. sighandler) doesn't expect that...
95 if (PL_savestack_ix == mgs->mgs_ss_ix)
97 I32 popval = SSPOPINT;
98 assert(popval == SAVEt_DESTRUCTOR);
101 assert(popval == SAVEt_ALLOC);
103 PL_savestack_ix -= popval;
109 Perl_mg_magical(pTHX_ SV *sv)
112 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
113 MGVTBL* vtbl = mg->mg_virtual;
115 if ((vtbl->svt_get != NULL) && !(mg->mg_flags & MGf_GSKIP))
119 if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || (vtbl->svt_clear != NULL))
126 Perl_mg_get(pTHX_ SV *sv)
134 mgs_ix = SSNEW(sizeof(MGS));
135 save_magic(mgs_ix, sv);
138 while ((mg = *mgp) != 0) {
139 MGVTBL* vtbl = mg->mg_virtual;
140 if (!(mg->mg_flags & MGf_GSKIP) && vtbl && (vtbl->svt_get != NULL)) {
141 (VTBL->svt_get)(aTHX_ sv, mg);
142 /* Ignore this magic if it's been deleted */
143 if ((mg == (mgp_valid ? *mgp : SvMAGIC(sv))) &&
144 (mg->mg_flags & MGf_GSKIP))
145 (SSPTR(mgs_ix, MGS*))->mgs_flags = 0;
147 /* Advance to next magic (complicated by possible deletion) */
148 if (mg == (mgp_valid ? *mgp : SvMAGIC(sv))) {
149 mgp = &mg->mg_moremagic;
153 mgp = &SvMAGIC(sv); /* Re-establish pointer after sv_upgrade */
156 restore_magic((void*)mgs_ix);
161 Perl_mg_set(pTHX_ SV *sv)
168 mgs_ix = SSNEW(sizeof(MGS));
169 save_magic(mgs_ix, sv);
171 for (mg = SvMAGIC(sv); mg; mg = nextmg) {
172 MGVTBL* vtbl = mg->mg_virtual;
173 nextmg = mg->mg_moremagic; /* it may delete itself */
174 if (mg->mg_flags & MGf_GSKIP) {
175 mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */
176 (SSPTR(mgs_ix, MGS*))->mgs_flags = 0;
178 if (vtbl && (vtbl->svt_set != NULL))
179 (VTBL->svt_set)(aTHX_ sv, mg);
182 restore_magic((void*)mgs_ix);
187 Perl_mg_length(pTHX_ SV *sv)
193 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
194 MGVTBL* vtbl = mg->mg_virtual;
195 if (vtbl && (vtbl->svt_len != NULL)) {
198 mgs_ix = SSNEW(sizeof(MGS));
199 save_magic(mgs_ix, sv);
200 /* omit MGf_GSKIP -- not changed here */
201 len = (VTBL->svt_len)(aTHX_ sv, mg);
202 restore_magic((void*)mgs_ix);
207 junk = SvPV(sv, len);
212 Perl_mg_size(pTHX_ SV *sv)
217 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
218 MGVTBL* vtbl = mg->mg_virtual;
219 if (vtbl && (vtbl->svt_len != NULL)) {
222 mgs_ix = SSNEW(sizeof(MGS));
223 save_magic(mgs_ix, sv);
224 /* omit MGf_GSKIP -- not changed here */
225 len = (VTBL->svt_len)(aTHX_ sv, mg);
226 restore_magic((void*)mgs_ix);
233 len = AvFILLp((AV *) sv); /* Fallback to non-tied array */
238 Perl_croak(aTHX_ "Size magic not implemented");
245 Perl_mg_clear(pTHX_ SV *sv)
250 mgs_ix = SSNEW(sizeof(MGS));
251 save_magic(mgs_ix, sv);
253 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
254 MGVTBL* vtbl = mg->mg_virtual;
255 /* omit GSKIP -- never set here */
257 if (vtbl && (vtbl->svt_clear != NULL))
258 (VTBL->svt_clear)(aTHX_ sv, mg);
261 restore_magic((void*)mgs_ix);
266 Perl_mg_find(pTHX_ SV *sv, int type)
269 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
270 if (mg->mg_type == type)
277 Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen)
281 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
282 if (isUPPER(mg->mg_type)) {
284 mg->mg_type == 'P' ? SvTIED_obj(sv, mg) : mg->mg_obj,
285 toLOWER(mg->mg_type), key, klen);
293 Perl_mg_free(pTHX_ SV *sv)
297 for (mg = SvMAGIC(sv); mg; mg = moremagic) {
298 MGVTBL* vtbl = mg->mg_virtual;
299 moremagic = mg->mg_moremagic;
300 if (vtbl && (vtbl->svt_free != NULL))
301 (VTBL->svt_free)(aTHX_ sv, mg);
302 if (mg->mg_ptr && mg->mg_type != 'g')
304 Safefree(mg->mg_ptr);
305 else if (mg->mg_len == HEf_SVKEY)
306 SvREFCNT_dec((SV*)mg->mg_ptr);
307 if (mg->mg_flags & MGf_REFCOUNTED)
308 SvREFCNT_dec(mg->mg_obj);
315 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
320 Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg)
328 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
329 if (mg->mg_obj) /* @+ */
332 return rx->lastparen;
339 Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg)
348 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
352 if (paren <= rx->nparens &&
353 (s = rx->startp[paren]) != -1 &&
354 (t = rx->endp[paren]) != -1)
356 if (mg->mg_obj) /* @+ */
367 Perl_magic_len(pTHX_ SV *sv, MAGIC *mg)
376 switch (*mg->mg_ptr) {
377 case '1': case '2': case '3': case '4':
378 case '5': case '6': case '7': case '8': case '9': case '&':
379 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
382 paren = atoi(mg->mg_ptr);
384 if (paren <= rx->nparens &&
385 (s1 = rx->startp[paren]) != -1 &&
386 (t1 = rx->endp[paren]) != -1)
395 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
396 paren = rx->lastparen;
402 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
403 if (rx->startp[0] != -1) {
411 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
412 if (rx->endp[0] != -1) {
413 i = rx->sublen - rx->endp[0];
420 return (STRLEN)PL_ofslen;
422 return (STRLEN)PL_orslen;
425 if (!SvPOK(sv) && SvNIOK(sv)) {
443 static char buffer[50] ;
448 sprintf(buffer, "Buffer %d, Length = %d - ", sv, SvCUR(sv)) ;
450 for (i = 0; i < SvCUR(sv) ; ++ i) {
451 sprintf (buf1, " %x [%x]", (p+i), *(p+i)) ;
452 strcat(buffer, buf1) ;
462 Perl_magic_get(pTHX_ SV *sv, MAGIC *mg)
471 switch (*mg->mg_ptr) {
472 case '\001': /* ^A */
473 sv_setsv(sv, PL_bodytarget);
475 case '\002': /* ^B */
476 /* printf("magic_get $^B: ") ; */
477 if (PL_curcop->cop_warnings == WARN_NONE)
478 /* printf("WARN_NONE\n"), */
479 sv_setpvn(sv, WARN_NONEstring, WARNsize) ;
480 else if (PL_curcop->cop_warnings == WARN_ALL)
481 /* printf("WARN_ALL\n"), */
482 sv_setpvn(sv, WARN_ALLstring, WARNsize) ;
484 /* printf("some %s\n", printW(PL_curcop->cop_warnings)), */
485 sv_setsv(sv, PL_curcop->cop_warnings);
487 case '\003': /* ^C */
488 sv_setiv(sv, (IV)PL_minus_c);
491 case '\004': /* ^D */
492 sv_setiv(sv, (IV)(PL_debug & 32767));
494 case '\005': /* ^E */
497 # include <descrip.h>
498 # include <starlet.h>
500 $DESCRIPTOR(msgdsc,msg);
501 sv_setnv(sv,(NV) vaxc$errno);
502 if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1)
503 sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length);
509 if (!(_emx_env & 0x200)) { /* Under DOS */
510 sv_setnv(sv, (NV)errno);
511 sv_setpv(sv, errno ? Strerror(errno) : "");
513 if (errno != errno_isOS2) {
514 int tmp = _syserrno();
515 if (tmp) /* 2nd call to _syserrno() makes it 0 */
518 sv_setnv(sv, (NV)Perl_rc);
519 sv_setpv(sv, os2error(Perl_rc));
524 DWORD dwErr = GetLastError();
525 sv_setnv(sv, (NV)dwErr);
528 PerlProc_GetOSError(sv, dwErr);
535 sv_setnv(sv, (NV)errno);
536 sv_setpv(sv, errno ? Strerror(errno) : "");
540 SvNOK_on(sv); /* what a wonderful hack! */
542 case '\006': /* ^F */
543 sv_setiv(sv, (IV)PL_maxsysfd);
545 case '\010': /* ^H */
546 sv_setiv(sv, (IV)PL_hints);
548 case '\011': /* ^I */ /* NOT \t in EBCDIC */
550 sv_setpv(sv, PL_inplace);
552 sv_setsv(sv, &PL_sv_undef);
554 case '\017': /* ^O */
555 sv_setpv(sv, PL_osname);
557 case '\020': /* ^P */
558 sv_setiv(sv, (IV)PL_perldb);
560 case '\023': /* ^S */
563 if (PL_lex_state != LEX_NOTPARSING)
571 case '\024': /* ^T */
573 sv_setnv(sv, PL_basetime);
575 sv_setiv(sv, (IV)PL_basetime);
578 case '\027': /* ^W */
579 sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) == G_WARN_ON));
581 case '1': case '2': case '3': case '4':
582 case '5': case '6': case '7': case '8': case '9': case '&':
583 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
587 * Pre-threads, this was paren = atoi(GvENAME((GV*)mg->mg_obj));
588 * XXX Does the new way break anything?
590 paren = atoi(mg->mg_ptr);
592 if (paren <= rx->nparens &&
593 (s1 = rx->startp[paren]) != -1 &&
594 (t1 = rx->endp[paren]) != -1)
602 was_tainted = PL_tainted;
607 PL_tainted = (was_tainted || RX_MATCH_TAINTED(rx));
612 sv_setsv(sv,&PL_sv_undef);
615 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
616 paren = rx->lastparen;
620 sv_setsv(sv,&PL_sv_undef);
623 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
624 if ((s = rx->subbeg) && rx->startp[0] != -1) {
629 sv_setsv(sv,&PL_sv_undef);
632 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
633 if (rx->subbeg && rx->endp[0] != -1) {
634 s = rx->subbeg + rx->endp[0];
635 i = rx->sublen - rx->endp[0];
639 sv_setsv(sv,&PL_sv_undef);
643 if (GvIO(PL_last_in_gv)) {
644 sv_setiv(sv, (IV)IoLINES(GvIO(PL_last_in_gv)));
650 sv_setiv(sv, (IV)STATUS_CURRENT);
651 #ifdef COMPLEX_STATUS
652 LvTARGOFF(sv) = PL_statusvalue;
653 LvTARGLEN(sv) = PL_statusvalue_vms;
658 s = IoTOP_NAME(GvIOp(PL_defoutgv));
662 sv_setpv(sv,GvENAME(PL_defoutgv));
667 s = IoFMT_NAME(GvIOp(PL_defoutgv));
669 s = GvENAME(PL_defoutgv);
674 sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv)));
677 sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv)));
680 sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv)));
688 WITH_THR(sv_setiv(sv, (IV)PL_curcop->cop_arybase));
691 sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 );
694 sv_setpvn(sv,PL_ofs,PL_ofslen);
697 sv_setpvn(sv,PL_ors,PL_orslen);
700 sv_setpv(sv,PL_ofmt);
704 sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno));
705 sv_setpv(sv, errno ? Strerror(errno) : "");
708 int saveerrno = errno;
709 sv_setnv(sv, (NV)errno);
711 if (errno == errno_isOS2) sv_setpv(sv, os2error(Perl_rc));
714 sv_setpv(sv, errno ? Strerror(errno) : "");
718 SvNOK_on(sv); /* what a wonderful hack! */
721 sv_setiv(sv, (IV)PL_uid);
724 sv_setiv(sv, (IV)PL_euid);
727 sv_setiv(sv, (IV)PL_gid);
728 Perl_sv_setpvf(aTHX_ sv, "%Vd", (IV)PL_gid);
731 sv_setiv(sv, (IV)PL_egid);
732 Perl_sv_setpvf(aTHX_ sv, "%Vd", (IV)PL_egid);
736 Groups_t gary[NGROUPS];
737 i = getgroups(NGROUPS,gary);
739 Perl_sv_catpvf(aTHX_ sv, " %Vd", (IV)gary[i]);
742 SvIOK_on(sv); /* what a wonderful hack! */
750 sv_setsv(sv, thr->errsv);
752 #endif /* USE_THREADS */
758 Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg)
760 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
762 if (uf && uf->uf_val)
763 (*uf->uf_val)(uf->uf_index, sv);
768 Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg)
779 #ifdef DYNAMIC_ENV_FETCH
780 /* We just undefd an environment var. Is a replacement */
781 /* waiting in the wings? */
784 if ((valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE)))
785 s = SvPV(*valp, len);
789 #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS)
790 /* And you'll never guess what the dog had */
791 /* in its mouth... */
793 MgTAINTEDDIR_off(mg);
795 if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) {
796 char pathbuf[256], eltbuf[256], *cp, *elt = s;
800 do { /* DCL$PATH may be a search list */
801 while (1) { /* as may dev portion of any element */
802 if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) {
803 if ( *(cp+1) == '.' || *(cp+1) == '-' ||
804 cando_by_name(S_IWUSR,0,elt) ) {
809 if ((cp = strchr(elt, ':')) != Nullch)
811 if (my_trnlnm(elt, eltbuf, j++))
817 } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf));
820 if (s && klen == 4 && strEQ(ptr,"PATH")) {
821 char *strend = s + len;
826 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf,
829 if (i >= sizeof tmpbuf /* too long -- assume the worst */
831 || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) {
838 #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */
844 Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg)
847 my_setenv(MgPV(mg,n_a),Nullch);
852 Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg)
855 Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system");
861 magic_clear_all_env(sv,mg);
862 hv_iterinit((HV*)sv);
863 while (entry = hv_iternext((HV*)sv)) {
865 my_setenv(hv_iterkey(entry, &keylen),
866 SvPV(hv_iterval((HV*)sv, entry), n_a));
874 Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg)
877 Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system");
880 char *envv = GetEnvironmentStrings();
884 char *end = strchr(cur,'=');
885 if (end && end != cur) {
887 my_setenv(cur,Nullch);
889 cur = end + strlen(end+1)+2;
891 else if ((len = strlen(cur)))
894 FreeEnvironmentStrings(envv);
896 # ifndef PERL_USE_SAFE_PUTENV
899 if (environ == PL_origenviron)
900 environ = (char**)safesysmalloc(sizeof(char*));
902 for (i = 0; environ[i]; i++)
903 safesysfree(environ[i]);
904 # endif /* PERL_USE_SAFE_PUTENV */
914 Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg)
918 /* Are we fetching a signal entry? */
919 i = whichsig(MgPV(mg,n_a));
922 sv_setsv(sv,PL_psig_ptr[i]);
924 Sighandler_t sigstate = rsignal_state(i);
926 /* cache state so we don't fetch it again */
927 if(sigstate == SIG_IGN)
928 sv_setpv(sv,"IGNORE");
930 sv_setsv(sv,&PL_sv_undef);
931 PL_psig_ptr[i] = SvREFCNT_inc(sv);
938 Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg)
942 /* Are we clearing a signal entry? */
943 i = whichsig(MgPV(mg,n_a));
946 SvREFCNT_dec(PL_psig_ptr[i]);
949 if(PL_psig_name[i]) {
950 SvREFCNT_dec(PL_psig_name[i]);
958 Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg)
968 if (strEQ(s,"__DIE__"))
970 else if (strEQ(s,"__WARN__"))
972 else if (strEQ(s,"__PARSE__"))
975 Perl_croak(aTHX_ "No such hook: %s", s);
983 i = whichsig(s); /* ...no, a brick */
985 if (ckWARN(WARN_SIGNAL) || strEQ(s,"ALARM"))
986 Perl_warner(aTHX_ WARN_SIGNAL, "No such signal: SIG%s", s);
989 SvREFCNT_dec(PL_psig_name[i]);
990 SvREFCNT_dec(PL_psig_ptr[i]);
991 PL_psig_ptr[i] = SvREFCNT_inc(sv);
992 SvTEMP_off(sv); /* Make sure it doesn't go away on us */
993 PL_psig_name[i] = newSVpvn(s, len);
994 SvREADONLY_on(PL_psig_name[i]);
996 if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) {
998 (void)rsignal(i, PL_sighandlerp);
1000 *svp = SvREFCNT_inc(sv);
1003 s = SvPV_force(sv,len);
1004 if (strEQ(s,"IGNORE")) {
1006 (void)rsignal(i, SIG_IGN);
1010 else if (strEQ(s,"DEFAULT") || !*s) {
1012 (void)rsignal(i, SIG_DFL);
1018 * We should warn if HINT_STRICT_REFS, but without
1019 * access to a known hint bit in a known OP, we can't
1020 * tell whether HINT_STRICT_REFS is in force or not.
1022 if (!strchr(s,':') && !strchr(s,'\''))
1023 sv_insert(sv, 0, 0, "main::", 6);
1025 (void)rsignal(i, PL_sighandlerp);
1027 *svp = SvREFCNT_inc(sv);
1033 Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg)
1035 PL_sub_generation++;
1040 Perl_magic_setamagic(pTHX_ SV *sv, MAGIC *mg)
1042 /* HV_badAMAGIC_on(Sv_STASH(sv)); */
1043 PL_amagic_generation++;
1049 Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg)
1051 HV *hv = (HV*)LvTARG(sv);
1056 (void) hv_iterinit(hv);
1057 if (! SvTIED_mg((SV*)hv, 'P'))
1061 while (entry = hv_iternext(hv)) {
1067 sv_setiv(sv, (IV)i);
1072 Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg)
1075 hv_ksplit((HV*)LvTARG(sv), SvIV(sv));
1080 /* caller is responsible for stack switching/cleanup */
1082 S_magic_methcall(pTHX_ SV *sv, MAGIC *mg, char *meth, I32 flags, int n, SV *val)
1088 PUSHs(SvTIED_obj(sv, mg));
1091 if (mg->mg_len >= 0)
1092 PUSHs(sv_2mortal(newSVpvn(mg->mg_ptr, mg->mg_len)));
1093 else if (mg->mg_len == HEf_SVKEY)
1094 PUSHs((SV*)mg->mg_ptr);
1096 else if (mg->mg_type == 'p') {
1097 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
1105 return call_method(meth, flags);
1109 S_magic_methpack(pTHX_ SV *sv, MAGIC *mg, char *meth)
1115 PUSHSTACKi(PERLSI_MAGIC);
1117 if (magic_methcall(sv, mg, meth, G_SCALAR, 2, NULL)) {
1118 sv_setsv(sv, *PL_stack_sp--);
1128 Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg)
1130 magic_methpack(sv,mg,"FETCH");
1132 mg->mg_flags |= MGf_GSKIP;
1137 Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg)
1141 PUSHSTACKi(PERLSI_MAGIC);
1142 magic_methcall(sv, mg, "STORE", G_SCALAR|G_DISCARD, 3, sv);
1149 Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg)
1151 return magic_methpack(sv,mg,"DELETE");
1156 Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg)
1163 PUSHSTACKi(PERLSI_MAGIC);
1164 if (magic_methcall(sv, mg, "FETCHSIZE", G_SCALAR, 2, NULL)) {
1165 sv = *PL_stack_sp--;
1166 retval = (U32) SvIV(sv)-1;
1175 Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg)
1180 PUSHSTACKi(PERLSI_MAGIC);
1182 XPUSHs(SvTIED_obj(sv, mg));
1184 call_method("CLEAR", G_SCALAR|G_DISCARD);
1191 Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key)
1194 char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
1198 PUSHSTACKi(PERLSI_MAGIC);
1201 PUSHs(SvTIED_obj(sv, mg));
1206 if (call_method(meth, G_SCALAR))
1207 sv_setsv(key, *PL_stack_sp--);
1216 Perl_magic_existspack(pTHX_ SV *sv, MAGIC *mg)
1218 return magic_methpack(sv,mg,"EXISTS");
1222 Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg)
1233 svp = av_fetch(GvAV(gv),
1234 atoi(MgPV(mg,n_a)), FALSE);
1235 if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp)))
1238 Perl_warn(aTHX_ "Can't break at that line\n");
1243 Perl_magic_getarylen(pTHX_ SV *sv, MAGIC *mg)
1246 sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + PL_curcop->cop_arybase);
1251 Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg)
1254 av_fill((AV*)mg->mg_obj, SvIV(sv) - PL_curcop->cop_arybase);
1259 Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg)
1261 SV* lsv = LvTARG(sv);
1263 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) {
1264 mg = mg_find(lsv, 'g');
1265 if (mg && mg->mg_len >= 0) {
1269 sv_pos_b2u(lsv, &i);
1270 sv_setiv(sv, i + PL_curcop->cop_arybase);
1279 Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg)
1281 SV* lsv = LvTARG(sv);
1289 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv))
1290 mg = mg_find(lsv, 'g');
1294 sv_magic(lsv, (SV*)0, 'g', Nullch, 0);
1295 mg = mg_find(lsv, 'g');
1297 else if (!SvOK(sv)) {
1301 len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv);
1303 pos = SvIV(sv) - PL_curcop->cop_arybase;
1306 ulen = sv_len_utf8(lsv);
1323 sv_pos_u2b(lsv, &p, 0);
1328 mg->mg_flags &= ~MGf_MINMATCH;
1334 Perl_magic_getglob(pTHX_ SV *sv, MAGIC *mg)
1336 if (SvFAKE(sv)) { /* FAKE globs can get coerced */
1338 gv_efullname3(sv,((GV*)sv), "*");
1342 gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */
1347 Perl_magic_setglob(pTHX_ SV *sv, MAGIC *mg)
1356 if (*s == '*' && s[1])
1358 gv = gv_fetchpv(s,TRUE, SVt_PVGV);
1363 GvGP(sv) = gp_ref(GvGP(gv));
1368 Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg)
1371 SV *lsv = LvTARG(sv);
1372 char *tmps = SvPV(lsv,len);
1373 I32 offs = LvTARGOFF(sv);
1374 I32 rem = LvTARGLEN(sv);
1378 if (rem + offs > len)
1380 sv_setpvn(sv, tmps + offs, (STRLEN)rem);
1385 Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg)
1388 char *tmps = SvPV(sv,len);
1389 sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len);
1394 Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg)
1397 TAINT_IF((mg->mg_len & 1) ||
1398 (mg->mg_len & 2) && mg->mg_obj == sv); /* kludge */
1403 Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg)
1406 if (PL_localizing) {
1407 if (PL_localizing == 1)
1412 else if (PL_tainted)
1420 Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg)
1422 SV *lsv = LvTARG(sv);
1424 unsigned long retnum;
1434 s = (unsigned char *) SvPV(lsv, lsvlen);
1435 offset = LvTARGOFF(sv);
1436 size = LvTARGLEN(sv);
1437 len = (offset + size + 7) / 8;
1439 /* Copied from pp_vec() */
1447 if (offset >= lsvlen)
1450 retnum = (unsigned long) s[offset] << 8;
1452 else if (size == 32) {
1453 if (offset >= lsvlen)
1455 else if (offset + 1 >= lsvlen)
1456 retnum = (unsigned long) s[offset] << 24;
1457 else if (offset + 2 >= lsvlen)
1458 retnum = ((unsigned long) s[offset] << 24) +
1459 ((unsigned long) s[offset + 1] << 16);
1461 retnum = ((unsigned long) s[offset] << 24) +
1462 ((unsigned long) s[offset + 1] << 16) +
1463 (s[offset + 2] << 8);
1468 retnum = (s[offset >> 3] >> (offset & 7)) & ((1 << size) - 1);
1473 else if (size == 16)
1474 retnum = ((unsigned long) s[offset] << 8) + s[offset+1];
1475 else if (size == 32)
1476 retnum = ((unsigned long) s[offset] << 24) +
1477 ((unsigned long) s[offset + 1] << 16) +
1478 (s[offset + 2] << 8) + s[offset+3];
1481 sv_setuv(sv, (UV)retnum);
1486 Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg)
1488 do_vecset(sv); /* XXX slurp this routine */
1493 Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg)
1496 if (LvTARGLEN(sv)) {
1498 SV *ahv = LvTARG(sv);
1499 if (SvTYPE(ahv) == SVt_PVHV) {
1500 HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, FALSE, 0);
1505 SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, FALSE, 0);
1511 AV* av = (AV*)LvTARG(sv);
1512 if ((I32)LvTARGOFF(sv) <= AvFILL(av))
1513 targ = AvARRAY(av)[LvTARGOFF(sv)];
1515 if (targ && targ != &PL_sv_undef) {
1516 dTHR; /* just for SvREFCNT_dec */
1517 /* somebody else defined it for us */
1518 SvREFCNT_dec(LvTARG(sv));
1519 LvTARG(sv) = SvREFCNT_inc(targ);
1521 SvREFCNT_dec(mg->mg_obj);
1522 mg->mg_obj = Nullsv;
1523 mg->mg_flags &= ~MGf_REFCOUNTED;
1528 sv_setsv(sv, targ ? targ : &PL_sv_undef);
1533 Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg)
1538 sv_setsv(LvTARG(sv), sv);
1539 SvSETMAGIC(LvTARG(sv));
1545 Perl_vivify_defelem(pTHX_ SV *sv)
1547 dTHR; /* just for SvREFCNT_inc and SvREFCNT_dec*/
1551 if (!LvTARGLEN(sv) || !(mg = mg_find(sv, 'y')))
1554 SV *ahv = LvTARG(sv);
1556 if (SvTYPE(ahv) == SVt_PVHV) {
1557 HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0);
1562 SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, TRUE, 0);
1566 if (!value || value == &PL_sv_undef)
1567 Perl_croak(aTHX_ PL_no_helem, SvPV(mg->mg_obj, n_a));
1570 AV* av = (AV*)LvTARG(sv);
1571 if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av))
1572 LvTARG(sv) = Nullsv; /* array can't be extended */
1574 SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE);
1575 if (!svp || (value = *svp) == &PL_sv_undef)
1576 Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv));
1579 (void)SvREFCNT_inc(value);
1580 SvREFCNT_dec(LvTARG(sv));
1583 SvREFCNT_dec(mg->mg_obj);
1584 mg->mg_obj = Nullsv;
1585 mg->mg_flags &= ~MGf_REFCOUNTED;
1589 Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg)
1591 AV *av = (AV*)mg->mg_obj;
1592 SV **svp = AvARRAY(av);
1593 I32 i = AvFILLp(av);
1595 if (svp[i] && svp[i] != &PL_sv_undef) {
1596 if (!SvWEAKREF(svp[i]))
1597 Perl_croak(aTHX_ "panic: magic_killbackrefs");
1598 /* XXX Should we check that it hasn't changed? */
1601 SvWEAKREF_off(svp[i]);
1602 svp[i] = &PL_sv_undef;
1610 Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg)
1618 Perl_magic_setbm(pTHX_ SV *sv, MAGIC *mg)
1620 sv_unmagic(sv, 'B');
1626 Perl_magic_setfm(pTHX_ SV *sv, MAGIC *mg)
1628 sv_unmagic(sv, 'f');
1634 Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg)
1636 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
1638 if (uf && uf->uf_set)
1639 (*uf->uf_set)(uf->uf_index, sv);
1644 Perl_magic_freeregexp(pTHX_ SV *sv, MAGIC *mg)
1646 regexp *re = (regexp *)mg->mg_obj;
1651 #ifdef USE_LOCALE_COLLATE
1653 Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg)
1656 * RenE<eacute> Descartes said "I think not."
1657 * and vanished with a faint plop.
1660 Safefree(mg->mg_ptr);
1666 #endif /* USE_LOCALE_COLLATE */
1669 Perl_magic_set(pTHX_ SV *sv, MAGIC *mg)
1675 switch (*mg->mg_ptr) {
1676 case '\001': /* ^A */
1677 sv_setsv(PL_bodytarget, sv);
1679 case '\002': /* ^B */
1680 if ( ! (PL_dowarn & G_WARN_ALL_MASK)) {
1681 if (memEQ(SvPVX(sv), WARN_ALLstring, WARNsize))
1682 PL_compiling.cop_warnings = WARN_ALL;
1683 else if (memEQ(SvPVX(sv), WARN_NONEstring, WARNsize))
1684 PL_compiling.cop_warnings = WARN_NONE;
1686 if (PL_compiling.cop_warnings != WARN_NONE &&
1687 PL_compiling.cop_warnings != WARN_ALL)
1688 sv_setsv(PL_compiling.cop_warnings, sv);
1690 PL_compiling.cop_warnings = newSVsv(sv) ;
1695 case '\003': /* ^C */
1696 PL_minus_c = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1699 case '\004': /* ^D */
1700 PL_debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000;
1701 DEBUG_x(dump_all());
1703 case '\005': /* ^E */
1705 set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1708 SetLastError( SvIV(sv) );
1711 /* will anyone ever use this? */
1712 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4);
1717 case '\006': /* ^F */
1718 PL_maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1720 case '\010': /* ^H */
1721 PL_hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1723 case '\011': /* ^I */ /* NOT \t in EBCDIC */
1725 Safefree(PL_inplace);
1727 PL_inplace = savepv(SvPV(sv,len));
1729 PL_inplace = Nullch;
1731 case '\017': /* ^O */
1733 Safefree(PL_osname);
1735 PL_osname = savepv(SvPV(sv,len));
1739 case '\020': /* ^P */
1740 PL_perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1742 case '\024': /* ^T */
1744 PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv));
1746 PL_basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1749 case '\027': /* ^W */
1750 if ( ! (PL_dowarn & G_WARN_ALL_MASK)) {
1751 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1752 PL_dowarn = (i ? G_WARN_ON : G_WARN_OFF) ;
1756 if (PL_localizing) {
1757 if (PL_localizing == 1)
1758 save_sptr((SV**)&PL_last_in_gv);
1760 else if (SvOK(sv) && GvIO(PL_last_in_gv))
1761 IoLINES(GvIOp(PL_last_in_gv)) = (long)SvIV(sv);
1764 Safefree(IoTOP_NAME(GvIOp(PL_defoutgv)));
1765 IoTOP_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len));
1766 IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1769 Safefree(IoFMT_NAME(GvIOp(PL_defoutgv)));
1770 IoFMT_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len));
1771 IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1774 IoPAGE_LEN(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1777 IoLINES_LEFT(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1778 if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L)
1779 IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L;
1782 IoPAGE(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1786 IO *io = GvIOp(PL_defoutgv);
1787 if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0)
1788 IoFLAGS(io) &= ~IOf_FLUSH;
1790 if (!(IoFLAGS(io) & IOf_FLUSH)) {
1791 PerlIO *ofp = IoOFP(io);
1793 (void)PerlIO_flush(ofp);
1794 IoFLAGS(io) |= IOf_FLUSH;
1800 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1801 PL_multiline = (i != 0);
1804 SvREFCNT_dec(PL_nrs);
1805 PL_nrs = newSVsv(sv);
1806 SvREFCNT_dec(PL_rs);
1807 PL_rs = SvREFCNT_inc(PL_nrs);
1812 if (SvOK(sv) || SvGMAGICAL(sv))
1813 PL_ors = savepv(SvPV(sv,PL_orslen));
1822 PL_ofs = savepv(SvPV(sv, PL_ofslen));
1827 PL_ofmt = savepv(SvPV(sv,len));
1830 PL_compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1833 #ifdef COMPLEX_STATUS
1834 if (PL_localizing == 2) {
1835 PL_statusvalue = LvTARGOFF(sv);
1836 PL_statusvalue_vms = LvTARGLEN(sv);
1840 #ifdef VMSISH_STATUS
1842 STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)));
1845 STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1848 SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0,
1849 (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno);
1852 PL_uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1853 if (PL_delaymagic) {
1854 PL_delaymagic |= DM_RUID;
1855 break; /* don't do magic till later */
1858 (void)setruid((Uid_t)PL_uid);
1861 (void)setreuid((Uid_t)PL_uid, (Uid_t)-1);
1863 #ifdef HAS_SETRESUID
1864 (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1);
1866 if (PL_uid == PL_euid) /* special case $< = $> */
1867 (void)PerlProc_setuid(PL_uid);
1869 PL_uid = (I32)PerlProc_getuid();
1870 Perl_croak(aTHX_ "setruid() not implemented");
1875 PL_uid = (I32)PerlProc_getuid();
1876 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
1879 PL_euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1880 if (PL_delaymagic) {
1881 PL_delaymagic |= DM_EUID;
1882 break; /* don't do magic till later */
1885 (void)seteuid((Uid_t)PL_euid);
1888 (void)setreuid((Uid_t)-1, (Uid_t)PL_euid);
1890 #ifdef HAS_SETRESUID
1891 (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1);
1893 if (PL_euid == PL_uid) /* special case $> = $< */
1894 PerlProc_setuid(PL_euid);
1896 PL_euid = (I32)PerlProc_geteuid();
1897 Perl_croak(aTHX_ "seteuid() not implemented");
1902 PL_euid = (I32)PerlProc_geteuid();
1903 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
1906 PL_gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1907 if (PL_delaymagic) {
1908 PL_delaymagic |= DM_RGID;
1909 break; /* don't do magic till later */
1912 (void)setrgid((Gid_t)PL_gid);
1915 (void)setregid((Gid_t)PL_gid, (Gid_t)-1);
1917 #ifdef HAS_SETRESGID
1918 (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1);
1920 if (PL_gid == PL_egid) /* special case $( = $) */
1921 (void)PerlProc_setgid(PL_gid);
1923 PL_gid = (I32)PerlProc_getgid();
1924 Perl_croak(aTHX_ "setrgid() not implemented");
1929 PL_gid = (I32)PerlProc_getgid();
1930 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
1933 #ifdef HAS_SETGROUPS
1935 char *p = SvPV(sv, len);
1936 Groups_t gary[NGROUPS];
1940 PL_egid = I_V(atol(p));
1941 for (i = 0; i < NGROUPS; ++i) {
1942 while (*p && !isSPACE(*p))
1948 gary[i] = I_V(atol(p));
1951 (void)setgroups(i, gary);
1953 #else /* HAS_SETGROUPS */
1954 PL_egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1955 #endif /* HAS_SETGROUPS */
1956 if (PL_delaymagic) {
1957 PL_delaymagic |= DM_EGID;
1958 break; /* don't do magic till later */
1961 (void)setegid((Gid_t)PL_egid);
1964 (void)setregid((Gid_t)-1, (Gid_t)PL_egid);
1966 #ifdef HAS_SETRESGID
1967 (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1);
1969 if (PL_egid == PL_gid) /* special case $) = $( */
1970 (void)PerlProc_setgid(PL_egid);
1972 PL_egid = (I32)PerlProc_getegid();
1973 Perl_croak(aTHX_ "setegid() not implemented");
1978 PL_egid = (I32)PerlProc_getegid();
1979 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
1982 PL_chopset = SvPV_force(sv,len);
1988 /* See if all the arguments are contiguous in memory */
1989 for (i = 1; i < PL_origargc; i++) {
1990 if (PL_origargv[i] == s + 1
1992 || PL_origargv[i] == s + 2
1997 s += strlen(s); /* this one is ok too */
2002 /* can grab env area too? */
2003 if (PL_origenviron && (PL_origenviron[0] == s + 1
2005 || (PL_origenviron[0] == s + 9 && (s += 8))
2008 my_setenv("NoNe SuCh", Nullch);
2009 /* force copy of environment */
2010 for (i = 0; PL_origenviron[i]; i++)
2011 if (PL_origenviron[i] == s + 1) {
2018 PL_origalen = s - PL_origargv[0];
2020 s = SvPV_force(sv,len);
2022 if (i >= PL_origalen) {
2024 /* don't allow system to limit $0 seen by script */
2025 /* SvCUR_set(sv, i); *SvEND(sv) = '\0'; */
2026 Copy(s, PL_origargv[0], i, char);
2027 s = PL_origargv[0]+i;
2031 Copy(s, PL_origargv[0], i, char);
2032 s = PL_origargv[0]+i;
2034 while (++i < PL_origalen)
2036 s = PL_origargv[0]+i;
2037 for (i = 1; i < PL_origargc; i++)
2038 PL_origargv[i] = Nullch;
2043 sv_setsv(thr->errsv, sv);
2045 #endif /* USE_THREADS */
2052 Perl_magic_mutexfree(pTHX_ SV *sv, MAGIC *mg)
2055 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "0x%lx: magic_mutexfree 0x%lx\n",
2056 (unsigned long)thr, (unsigned long)sv);)
2058 Perl_croak(aTHX_ "panic: magic_mutexfree");
2059 MUTEX_DESTROY(MgMUTEXP(mg));
2060 COND_DESTROY(MgCONDP(mg));
2063 #endif /* USE_THREADS */
2066 Perl_whichsig(pTHX_ char *sig)
2068 register char **sigv;
2070 for (sigv = PL_sig_name+1; *sigv; sigv++)
2071 if (strEQ(sig,*sigv))
2072 return PL_sig_num[sigv - PL_sig_name];
2074 if (strEQ(sig,"CHLD"))
2078 if (strEQ(sig,"CLD"))
2087 S_unwind_handler_stack(pTHX_ void *p)
2090 U32 flags = *(U32*)p;
2093 PL_savestack_ix -= 5; /* Unprotect save in progress. */
2094 /* cxstack_ix-- Not needed, die already unwound it. */
2096 SvREFCNT_dec(sig_sv);
2100 Perl_sighandler(int sig)
2106 SV *sv, *tSv = PL_Sv;
2110 I32 o_save_i = PL_savestack_ix, type;
2113 if (PL_savestack_ix + 15 <= PL_savestack_max)
2115 if (PL_markstack_ptr < PL_markstack_max - 2)
2117 if (PL_retstack_ix < PL_retstack_max - 2)
2119 if (PL_scopestack_ix < PL_scopestack_max - 3)
2122 if (!PL_psig_ptr[sig])
2123 Perl_die(aTHX_ "Signal SIG%s received, but no signal handler set.\n",
2126 /* Max number of items pushed there is 3*n or 4. We cannot fix
2127 infinity, so we fix 4 (in fact 5): */
2129 PL_savestack_ix += 5; /* Protect save in progress. */
2130 o_save_i = PL_savestack_ix;
2131 SAVEDESTRUCTOR(S_unwind_handler_stack, (void*)&flags);
2134 PL_markstack_ptr++; /* Protect mark. */
2137 PL_retstack[PL_retstack_ix] = NULL;
2140 PL_scopestack_ix += 1;
2141 /* sv_2cv is too complicated, try a simpler variant first: */
2142 if (!SvROK(PL_psig_ptr[sig]) || !(cv = (CV*)SvRV(PL_psig_ptr[sig]))
2143 || SvTYPE(cv) != SVt_PVCV)
2144 cv = sv_2cv(PL_psig_ptr[sig],&st,&gv,TRUE);
2146 if (!cv || !CvROOT(cv)) {
2147 if (ckWARN(WARN_SIGNAL))
2148 Perl_warner(aTHX_ WARN_SIGNAL, "SIG%s handler \"%s\" not defined.\n",
2149 PL_sig_name[sig], (gv ? GvENAME(gv)
2156 if(PL_psig_name[sig]) {
2157 sv = SvREFCNT_inc(PL_psig_name[sig]);
2161 sv = sv_newmortal();
2162 sv_setpv(sv,PL_sig_name[sig]);
2165 PUSHSTACKi(PERLSI_SIGNAL);
2170 call_sv((SV*)cv, G_DISCARD);
2175 PL_savestack_ix -= 8; /* Unprotect save in progress. */
2181 PL_scopestack_ix -= 1;
2184 PL_op = myop; /* Apparently not needed... */
2186 PL_Sv = tSv; /* Restore global temporaries. */