3 * Copyright (c) 1991-2000, 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)
30 static void restore_magic(pTHXo_ void *p);
31 static void unwind_handler_stack(pTHXo_ void *p);
34 * Use the "DESTRUCTOR" scope cleanup to reinstate magic.
42 /* MGS is typedef'ed to struct magic_state in perl.h */
45 S_save_magic(pTHX_ I32 mgs_ix, SV *sv)
49 assert(SvMAGICAL(sv));
51 SAVEDESTRUCTOR_X(restore_magic, (void*)mgs_ix);
53 mgs = SSPTR(mgs_ix, MGS*);
55 mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv);
56 mgs->mgs_ss_ix = PL_savestack_ix; /* points after the saved destructor */
60 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
64 =for apidoc mg_magical
66 Turns on the magical status of an SV. See C<sv_magic>.
72 Perl_mg_magical(pTHX_ SV *sv)
75 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
76 MGVTBL* vtbl = mg->mg_virtual;
78 if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP))
82 if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || vtbl->svt_clear)
91 Do magic after a value is retrieved from the SV. See C<sv_magic>.
97 Perl_mg_get(pTHX_ SV *sv)
105 mgs_ix = SSNEW(sizeof(MGS));
106 save_magic(mgs_ix, sv);
109 while ((mg = *mgp) != 0) {
110 MGVTBL* vtbl = mg->mg_virtual;
111 if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) {
112 CALL_FPTR(vtbl->svt_get)(aTHX_ 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))
116 (SSPTR(mgs_ix, MGS*))->mgs_flags = 0;
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 */
127 restore_magic(aTHXo_ (void*)mgs_ix);
134 Do magic after a value is assigned to the SV. See C<sv_magic>.
140 Perl_mg_set(pTHX_ SV *sv)
147 mgs_ix = SSNEW(sizeof(MGS));
148 save_magic(mgs_ix, sv);
150 for (mg = SvMAGIC(sv); mg; mg = nextmg) {
151 MGVTBL* vtbl = mg->mg_virtual;
152 nextmg = mg->mg_moremagic; /* it may delete itself */
153 if (mg->mg_flags & MGf_GSKIP) {
154 mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */
155 (SSPTR(mgs_ix, MGS*))->mgs_flags = 0;
157 if (vtbl && vtbl->svt_set)
158 CALL_FPTR(vtbl->svt_set)(aTHX_ sv, mg);
161 restore_magic(aTHXo_ (void*)mgs_ix);
166 =for apidoc mg_length
168 Report on the SV's length. See C<sv_magic>.
174 Perl_mg_length(pTHX_ SV *sv)
180 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
181 MGVTBL* vtbl = mg->mg_virtual;
182 if (vtbl && vtbl->svt_len) {
185 mgs_ix = SSNEW(sizeof(MGS));
186 save_magic(mgs_ix, sv);
187 /* omit MGf_GSKIP -- not changed here */
188 len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg);
189 restore_magic(aTHXo_ (void*)mgs_ix);
194 junk = SvPV(sv, len);
199 Perl_mg_size(pTHX_ SV *sv)
204 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
205 MGVTBL* vtbl = mg->mg_virtual;
206 if (vtbl && vtbl->svt_len) {
209 mgs_ix = SSNEW(sizeof(MGS));
210 save_magic(mgs_ix, sv);
211 /* omit MGf_GSKIP -- not changed here */
212 len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg);
213 restore_magic(aTHXo_ (void*)mgs_ix);
220 len = AvFILLp((AV *) sv); /* Fallback to non-tied array */
225 Perl_croak(aTHX_ "Size magic not implemented");
234 Clear something magical that the SV represents. See C<sv_magic>.
240 Perl_mg_clear(pTHX_ SV *sv)
245 mgs_ix = SSNEW(sizeof(MGS));
246 save_magic(mgs_ix, sv);
248 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
249 MGVTBL* vtbl = mg->mg_virtual;
250 /* omit GSKIP -- never set here */
252 if (vtbl && vtbl->svt_clear)
253 CALL_FPTR(vtbl->svt_clear)(aTHX_ sv, mg);
256 restore_magic(aTHXo_ (void*)mgs_ix);
263 Finds the magic pointer for type matching the SV. See C<sv_magic>.
269 Perl_mg_find(pTHX_ SV *sv, int type)
272 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
273 if (mg->mg_type == type)
282 Copies the magic from one SV to another. See C<sv_magic>.
288 Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen)
292 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
293 if (isUPPER(mg->mg_type)) {
295 mg->mg_type == 'P' ? SvTIED_obj(sv, mg) : mg->mg_obj,
296 toLOWER(mg->mg_type), key, klen);
306 Free any magic storage used by the SV. See C<sv_magic>.
312 Perl_mg_free(pTHX_ SV *sv)
316 for (mg = SvMAGIC(sv); mg; mg = moremagic) {
317 MGVTBL* vtbl = mg->mg_virtual;
318 moremagic = mg->mg_moremagic;
319 if (vtbl && vtbl->svt_free)
320 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
321 if (mg->mg_ptr && mg->mg_type != 'g')
323 Safefree(mg->mg_ptr);
324 else if (mg->mg_len == HEf_SVKEY)
325 SvREFCNT_dec((SV*)mg->mg_ptr);
326 if (mg->mg_flags & MGf_REFCOUNTED)
327 SvREFCNT_dec(mg->mg_obj);
334 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
339 Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg)
344 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
345 if (mg->mg_obj) /* @+ */
348 return rx->lastparen;
355 Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg)
364 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
368 if (paren <= rx->nparens &&
369 (s = rx->startp[paren]) != -1 &&
370 (t = rx->endp[paren]) != -1)
372 if (mg->mg_obj) /* @+ */
383 Perl_magic_regdatum_set(pTHX_ SV *sv, MAGIC *mg)
386 Perl_croak(aTHX_ PL_no_modify);
390 Perl_magic_len(pTHX_ SV *sv, MAGIC *mg)
398 switch (*mg->mg_ptr) {
399 case '1': case '2': case '3': case '4':
400 case '5': case '6': case '7': case '8': case '9': case '&':
401 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
403 paren = atoi(mg->mg_ptr);
405 if (paren <= rx->nparens &&
406 (s1 = rx->startp[paren]) != -1 &&
407 (t1 = rx->endp[paren]) != -1)
411 if (i > 0 && (PL_curpm->op_pmdynflags & PMdf_UTF8) && !IN_BYTE) {
412 char *s = rx->subbeg + s1;
413 char *send = rx->subbeg + t1;
426 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
427 paren = rx->lastparen;
433 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
434 if (rx->startp[0] != -1) {
445 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
446 if (rx->endp[0] != -1) {
447 i = rx->sublen - rx->endp[0];
457 return (STRLEN)PL_ofslen;
459 return (STRLEN)PL_orslen;
462 if (!SvPOK(sv) && SvNIOK(sv)) {
472 Perl_magic_get(pTHX_ SV *sv, MAGIC *mg)
480 switch (*mg->mg_ptr) {
481 case '\001': /* ^A */
482 sv_setsv(sv, PL_bodytarget);
484 case '\003': /* ^C */
485 sv_setiv(sv, (IV)PL_minus_c);
488 case '\004': /* ^D */
489 sv_setiv(sv, (IV)(PL_debug & 32767));
490 #if defined(YYDEBUG) && defined(DEBUGGING)
491 PL_yydebug = (PL_debug & 1);
494 case '\005': /* ^E */
495 #ifdef MACOS_TRADITIONAL
499 sv_setnv(sv,(double)gMacPerl_OSErr);
500 sv_setpv(sv, gMacPerl_OSErr ? GetSysErrText(gMacPerl_OSErr, msg) : "");
505 # include <descrip.h>
506 # include <starlet.h>
508 $DESCRIPTOR(msgdsc,msg);
509 sv_setnv(sv,(NV) vaxc$errno);
510 if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1)
511 sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length);
517 if (!(_emx_env & 0x200)) { /* Under DOS */
518 sv_setnv(sv, (NV)errno);
519 sv_setpv(sv, errno ? Strerror(errno) : "");
521 if (errno != errno_isOS2) {
522 int tmp = _syserrno();
523 if (tmp) /* 2nd call to _syserrno() makes it 0 */
526 sv_setnv(sv, (NV)Perl_rc);
527 sv_setpv(sv, os2error(Perl_rc));
532 DWORD dwErr = GetLastError();
533 sv_setnv(sv, (NV)dwErr);
536 PerlProc_GetOSError(sv, dwErr);
543 sv_setnv(sv, (NV)errno);
544 sv_setpv(sv, errno ? Strerror(errno) : "");
549 SvNOK_on(sv); /* what a wonderful hack! */
551 case '\006': /* ^F */
552 sv_setiv(sv, (IV)PL_maxsysfd);
554 case '\010': /* ^H */
555 sv_setiv(sv, (IV)PL_hints);
557 case '\011': /* ^I */ /* NOT \t in EBCDIC */
559 sv_setpv(sv, PL_inplace);
561 sv_setsv(sv, &PL_sv_undef);
563 case '\017': /* ^O */
564 sv_setpv(sv, PL_osname);
566 case '\020': /* ^P */
567 sv_setiv(sv, (IV)PL_perldb);
569 case '\023': /* ^S */
572 if (PL_lex_state != LEX_NOTPARSING)
580 case '\024': /* ^T */
582 sv_setnv(sv, PL_basetime);
584 sv_setiv(sv, (IV)PL_basetime);
587 case '\027': /* ^W & $^WARNING_BITS & ^WIDE_SYSTEM_CALLS */
588 if (*(mg->mg_ptr+1) == '\0')
589 sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE));
590 else if (strEQ(mg->mg_ptr, "\027ARNING_BITS")) {
591 if (PL_compiling.cop_warnings == pWARN_NONE ||
592 PL_compiling.cop_warnings == pWARN_STD)
594 sv_setpvn(sv, WARN_NONEstring, WARNsize) ;
596 else if (PL_compiling.cop_warnings == pWARN_ALL) {
597 sv_setpvn(sv, WARN_ALLstring, WARNsize) ;
600 sv_setsv(sv, PL_compiling.cop_warnings);
604 else if (strEQ(mg->mg_ptr, "\027IDE_SYSTEM_CALLS"))
605 sv_setiv(sv, (IV)PL_widesyscalls);
607 case '1': case '2': case '3': case '4':
608 case '5': case '6': case '7': case '8': case '9': case '&':
609 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
613 * Pre-threads, this was paren = atoi(GvENAME((GV*)mg->mg_obj));
614 * XXX Does the new way break anything?
616 paren = atoi(mg->mg_ptr);
618 if (paren <= rx->nparens &&
619 (s1 = rx->startp[paren]) != -1 &&
620 (t1 = rx->endp[paren]) != -1)
631 was_tainted = PL_tainted;
635 if ((PL_curpm->op_pmdynflags & PMdf_UTF8) && !IN_BYTE)
640 PL_tainted = (was_tainted || RX_MATCH_TAINTED(rx));
645 sv_setsv(sv,&PL_sv_undef);
648 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
649 paren = rx->lastparen;
653 sv_setsv(sv,&PL_sv_undef);
656 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
657 if ((s = rx->subbeg) && rx->startp[0] != -1) {
662 sv_setsv(sv,&PL_sv_undef);
665 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
666 if (rx->subbeg && rx->endp[0] != -1) {
667 s = rx->subbeg + rx->endp[0];
668 i = rx->sublen - rx->endp[0];
672 sv_setsv(sv,&PL_sv_undef);
676 if (GvIO(PL_last_in_gv)) {
677 sv_setiv(sv, (IV)IoLINES(GvIO(PL_last_in_gv)));
683 sv_setiv(sv, (IV)STATUS_CURRENT);
684 #ifdef COMPLEX_STATUS
685 LvTARGOFF(sv) = PL_statusvalue;
686 LvTARGLEN(sv) = PL_statusvalue_vms;
691 s = IoTOP_NAME(GvIOp(PL_defoutgv));
695 sv_setpv(sv,GvENAME(PL_defoutgv));
700 s = IoFMT_NAME(GvIOp(PL_defoutgv));
702 s = GvENAME(PL_defoutgv);
707 sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv)));
710 sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv)));
713 sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv)));
721 WITH_THR(sv_setiv(sv, (IV)PL_curcop->cop_arybase));
724 sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 );
727 sv_setpvn(sv,PL_ofs,PL_ofslen);
730 sv_setpvn(sv,PL_ors,PL_orslen);
733 sv_setpv(sv,PL_ofmt);
737 sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno));
738 sv_setpv(sv, errno ? Strerror(errno) : "");
741 int saveerrno = errno;
742 sv_setnv(sv, (NV)errno);
744 if (errno == errno_isOS2 || errno == errno_isOS2_set)
745 sv_setpv(sv, os2error(Perl_rc));
748 sv_setpv(sv, errno ? Strerror(errno) : "");
752 SvNOK_on(sv); /* what a wonderful hack! */
755 sv_setiv(sv, (IV)PL_uid);
758 sv_setiv(sv, (IV)PL_euid);
761 sv_setiv(sv, (IV)PL_gid);
763 Perl_sv_setpvf(aTHX_ sv, "%"Gid_t_f, PL_gid);
767 sv_setiv(sv, (IV)PL_egid);
769 Perl_sv_setpvf(aTHX_ sv, "%"Gid_t_f, PL_egid);
774 Groups_t gary[NGROUPS];
775 i = getgroups(NGROUPS,gary);
777 Perl_sv_catpvf(aTHX_ sv, " %"Gid_t_f, gary[i]);
780 (void)SvIOK_on(sv); /* what a wonderful hack! */
784 #ifndef MACOS_TRADITIONAL
790 sv_setsv(sv, thr->errsv);
792 #endif /* USE_THREADS */
798 Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg)
800 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
802 if (uf && uf->uf_val)
803 (*uf->uf_val)(uf->uf_index, sv);
808 Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg)
819 #ifdef DYNAMIC_ENV_FETCH
820 /* We just undefd an environment var. Is a replacement */
821 /* waiting in the wings? */
824 if ((valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE)))
825 s = SvPV(*valp, len);
829 #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS)
830 /* And you'll never guess what the dog had */
831 /* in its mouth... */
833 MgTAINTEDDIR_off(mg);
835 if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) {
836 char pathbuf[256], eltbuf[256], *cp, *elt = s;
840 do { /* DCL$PATH may be a search list */
841 while (1) { /* as may dev portion of any element */
842 if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) {
843 if ( *(cp+1) == '.' || *(cp+1) == '-' ||
844 cando_by_name(S_IWUSR,0,elt) ) {
849 if ((cp = strchr(elt, ':')) != Nullch)
851 if (my_trnlnm(elt, eltbuf, j++))
857 } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf));
860 if (s && klen == 4 && strEQ(ptr,"PATH")) {
861 char *strend = s + len;
866 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf,
869 if (i >= sizeof tmpbuf /* too long -- assume the worst */
871 || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) {
878 #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */
884 Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg)
887 my_setenv(MgPV(mg,n_a),Nullch);
892 Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg)
895 Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system");
901 magic_clear_all_env(sv,mg);
902 hv_iterinit((HV*)sv);
903 while ((entry = hv_iternext((HV*)sv))) {
905 my_setenv(hv_iterkey(entry, &keylen),
906 SvPV(hv_iterval((HV*)sv, entry), n_a));
914 Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg)
917 Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system");
919 # ifdef PERL_IMPLICIT_SYS
923 char *envv = GetEnvironmentStrings();
927 char *end = strchr(cur,'=');
928 if (end && end != cur) {
930 my_setenv(cur,Nullch);
932 cur = end + strlen(end+1)+2;
934 else if ((len = strlen(cur)))
937 FreeEnvironmentStrings(envv);
941 for (i = 0; environ[i]; i++)
942 safesysfree(environ[i]);
944 # ifndef PERL_USE_SAFE_PUTENV
947 if (environ == PL_origenviron)
948 environ = (char**)safesysmalloc(sizeof(char*));
950 for (i = 0; environ[i]; i++)
951 safesysfree(environ[i]);
952 # endif /* PERL_USE_SAFE_PUTENV */
953 # endif /* __CYGWIN__ */
958 # endif /* PERL_IMPLICIT_SYS */
965 Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg)
969 /* Are we fetching a signal entry? */
970 i = whichsig(MgPV(mg,n_a));
973 sv_setsv(sv,PL_psig_ptr[i]);
975 Sighandler_t sigstate = rsignal_state(i);
977 /* cache state so we don't fetch it again */
978 if(sigstate == SIG_IGN)
979 sv_setpv(sv,"IGNORE");
981 sv_setsv(sv,&PL_sv_undef);
982 PL_psig_ptr[i] = SvREFCNT_inc(sv);
989 Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg)
993 /* Are we clearing a signal entry? */
994 i = whichsig(MgPV(mg,n_a));
997 SvREFCNT_dec(PL_psig_ptr[i]);
1000 if(PL_psig_name[i]) {
1001 SvREFCNT_dec(PL_psig_name[i]);
1009 Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg)
1019 if (strEQ(s,"__DIE__"))
1021 else if (strEQ(s,"__WARN__"))
1024 Perl_croak(aTHX_ "No such hook: %s", s);
1032 i = whichsig(s); /* ...no, a brick */
1034 if (ckWARN(WARN_SIGNAL))
1035 Perl_warner(aTHX_ WARN_SIGNAL, "No such signal: SIG%s", s);
1038 SvREFCNT_dec(PL_psig_name[i]);
1039 SvREFCNT_dec(PL_psig_ptr[i]);
1040 PL_psig_ptr[i] = SvREFCNT_inc(sv);
1041 SvTEMP_off(sv); /* Make sure it doesn't go away on us */
1042 PL_psig_name[i] = newSVpvn(s, len);
1043 SvREADONLY_on(PL_psig_name[i]);
1045 if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) {
1047 (void)rsignal(i, PL_sighandlerp);
1049 *svp = SvREFCNT_inc(sv);
1052 s = SvPV_force(sv,len);
1053 if (strEQ(s,"IGNORE")) {
1055 (void)rsignal(i, SIG_IGN);
1059 else if (strEQ(s,"DEFAULT") || !*s) {
1061 (void)rsignal(i, SIG_DFL);
1067 * We should warn if HINT_STRICT_REFS, but without
1068 * access to a known hint bit in a known OP, we can't
1069 * tell whether HINT_STRICT_REFS is in force or not.
1071 if (!strchr(s,':') && !strchr(s,'\''))
1072 sv_insert(sv, 0, 0, "main::", 6);
1074 (void)rsignal(i, PL_sighandlerp);
1076 *svp = SvREFCNT_inc(sv);
1080 #endif /* !PERL_MICRO */
1083 Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg)
1085 PL_sub_generation++;
1090 Perl_magic_setamagic(pTHX_ SV *sv, MAGIC *mg)
1092 /* HV_badAMAGIC_on(Sv_STASH(sv)); */
1093 PL_amagic_generation++;
1099 Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg)
1101 HV *hv = (HV*)LvTARG(sv);
1106 (void) hv_iterinit(hv);
1107 if (! SvTIED_mg((SV*)hv, 'P'))
1111 while ((entry = hv_iternext(hv))) {
1117 sv_setiv(sv, (IV)i);
1122 Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg)
1125 hv_ksplit((HV*)LvTARG(sv), SvIV(sv));
1130 /* caller is responsible for stack switching/cleanup */
1132 S_magic_methcall(pTHX_ SV *sv, MAGIC *mg, char *meth, I32 flags, int n, SV *val)
1138 PUSHs(SvTIED_obj(sv, mg));
1141 if (mg->mg_len >= 0)
1142 PUSHs(sv_2mortal(newSVpvn(mg->mg_ptr, mg->mg_len)));
1143 else if (mg->mg_len == HEf_SVKEY)
1144 PUSHs((SV*)mg->mg_ptr);
1146 else if (mg->mg_type == 'p') {
1147 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
1155 return call_method(meth, flags);
1159 S_magic_methpack(pTHX_ SV *sv, MAGIC *mg, char *meth)
1165 PUSHSTACKi(PERLSI_MAGIC);
1167 if (magic_methcall(sv, mg, meth, G_SCALAR, 2, NULL)) {
1168 sv_setsv(sv, *PL_stack_sp--);
1178 Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg)
1180 magic_methpack(sv,mg,"FETCH");
1182 mg->mg_flags |= MGf_GSKIP;
1187 Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg)
1191 PUSHSTACKi(PERLSI_MAGIC);
1192 magic_methcall(sv, mg, "STORE", G_SCALAR|G_DISCARD, 3, sv);
1199 Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg)
1201 return magic_methpack(sv,mg,"DELETE");
1206 Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg)
1213 PUSHSTACKi(PERLSI_MAGIC);
1214 if (magic_methcall(sv, mg, "FETCHSIZE", G_SCALAR, 2, NULL)) {
1215 sv = *PL_stack_sp--;
1216 retval = (U32) SvIV(sv)-1;
1225 Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg)
1230 PUSHSTACKi(PERLSI_MAGIC);
1232 XPUSHs(SvTIED_obj(sv, mg));
1234 call_method("CLEAR", G_SCALAR|G_DISCARD);
1241 Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key)
1244 const char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
1248 PUSHSTACKi(PERLSI_MAGIC);
1251 PUSHs(SvTIED_obj(sv, mg));
1256 if (call_method(meth, G_SCALAR))
1257 sv_setsv(key, *PL_stack_sp--);
1266 Perl_magic_existspack(pTHX_ SV *sv, MAGIC *mg)
1268 return magic_methpack(sv,mg,"EXISTS");
1272 Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg)
1283 svp = av_fetch(GvAV(gv),
1284 atoi(MgPV(mg,n_a)), FALSE);
1285 if (svp && SvIOKp(*svp) && (o = INT2PTR(OP*,SvIVX(*svp))))
1291 Perl_magic_getarylen(pTHX_ SV *sv, MAGIC *mg)
1294 sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + PL_curcop->cop_arybase);
1299 Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg)
1302 av_fill((AV*)mg->mg_obj, SvIV(sv) - PL_curcop->cop_arybase);
1307 Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg)
1309 SV* lsv = LvTARG(sv);
1311 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) {
1312 mg = mg_find(lsv, 'g');
1313 if (mg && mg->mg_len >= 0) {
1317 sv_pos_b2u(lsv, &i);
1318 sv_setiv(sv, i + PL_curcop->cop_arybase);
1327 Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg)
1329 SV* lsv = LvTARG(sv);
1337 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv))
1338 mg = mg_find(lsv, 'g');
1342 sv_magic(lsv, (SV*)0, 'g', Nullch, 0);
1343 mg = mg_find(lsv, 'g');
1345 else if (!SvOK(sv)) {
1349 len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv);
1351 pos = SvIV(sv) - PL_curcop->cop_arybase;
1354 ulen = sv_len_utf8(lsv);
1369 sv_pos_u2b(lsv, &p, 0);
1374 mg->mg_flags &= ~MGf_MINMATCH;
1380 Perl_magic_getglob(pTHX_ SV *sv, MAGIC *mg)
1382 if (SvFAKE(sv)) { /* FAKE globs can get coerced */
1384 gv_efullname3(sv,((GV*)sv), "*");
1388 gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */
1393 Perl_magic_setglob(pTHX_ SV *sv, MAGIC *mg)
1402 if (*s == '*' && s[1])
1404 gv = gv_fetchpv(s,TRUE, SVt_PVGV);
1409 GvGP(sv) = gp_ref(GvGP(gv));
1414 Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg)
1417 SV *lsv = LvTARG(sv);
1418 char *tmps = SvPV(lsv,len);
1419 I32 offs = LvTARGOFF(sv);
1420 I32 rem = LvTARGLEN(sv);
1424 if (rem + offs > len)
1426 sv_setpvn(sv, tmps + offs, (STRLEN)rem);
1431 Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg)
1434 char *tmps = SvPV(sv,len);
1435 sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len);
1440 Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg)
1443 TAINT_IF((mg->mg_len & 1) ||
1444 ((mg->mg_len & 2) && mg->mg_obj == sv)); /* kludge */
1449 Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg)
1452 if (PL_localizing) {
1453 if (PL_localizing == 1)
1458 else if (PL_tainted)
1466 Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg)
1468 SV *lsv = LvTARG(sv);
1475 sv_setuv(sv, do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(sv)));
1480 Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg)
1482 do_vecset(sv); /* XXX slurp this routine */
1487 Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg)
1490 if (LvTARGLEN(sv)) {
1492 SV *ahv = LvTARG(sv);
1493 if (SvTYPE(ahv) == SVt_PVHV) {
1494 HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, FALSE, 0);
1499 SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, FALSE, 0);
1505 AV* av = (AV*)LvTARG(sv);
1506 if ((I32)LvTARGOFF(sv) <= AvFILL(av))
1507 targ = AvARRAY(av)[LvTARGOFF(sv)];
1509 if (targ && targ != &PL_sv_undef) {
1510 dTHR; /* just for SvREFCNT_dec */
1511 /* somebody else defined it for us */
1512 SvREFCNT_dec(LvTARG(sv));
1513 LvTARG(sv) = SvREFCNT_inc(targ);
1515 SvREFCNT_dec(mg->mg_obj);
1516 mg->mg_obj = Nullsv;
1517 mg->mg_flags &= ~MGf_REFCOUNTED;
1522 sv_setsv(sv, targ ? targ : &PL_sv_undef);
1527 Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg)
1532 sv_setsv(LvTARG(sv), sv);
1533 SvSETMAGIC(LvTARG(sv));
1539 Perl_vivify_defelem(pTHX_ SV *sv)
1541 dTHR; /* just for SvREFCNT_inc and SvREFCNT_dec*/
1545 if (!LvTARGLEN(sv) || !(mg = mg_find(sv, 'y')))
1548 SV *ahv = LvTARG(sv);
1550 if (SvTYPE(ahv) == SVt_PVHV) {
1551 HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0);
1556 SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, TRUE, 0);
1560 if (!value || value == &PL_sv_undef)
1561 Perl_croak(aTHX_ PL_no_helem, SvPV(mg->mg_obj, n_a));
1564 AV* av = (AV*)LvTARG(sv);
1565 if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av))
1566 LvTARG(sv) = Nullsv; /* array can't be extended */
1568 SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE);
1569 if (!svp || (value = *svp) == &PL_sv_undef)
1570 Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv));
1573 (void)SvREFCNT_inc(value);
1574 SvREFCNT_dec(LvTARG(sv));
1577 SvREFCNT_dec(mg->mg_obj);
1578 mg->mg_obj = Nullsv;
1579 mg->mg_flags &= ~MGf_REFCOUNTED;
1583 Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg)
1585 AV *av = (AV*)mg->mg_obj;
1586 SV **svp = AvARRAY(av);
1587 I32 i = AvFILLp(av);
1589 if (svp[i] && svp[i] != &PL_sv_undef) {
1590 if (!SvWEAKREF(svp[i]))
1591 Perl_croak(aTHX_ "panic: magic_killbackrefs");
1592 /* XXX Should we check that it hasn't changed? */
1594 (void)SvOK_off(svp[i]);
1595 SvWEAKREF_off(svp[i]);
1596 svp[i] = &PL_sv_undef;
1604 Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg)
1612 Perl_magic_setbm(pTHX_ SV *sv, MAGIC *mg)
1614 sv_unmagic(sv, 'B');
1620 Perl_magic_setfm(pTHX_ SV *sv, MAGIC *mg)
1622 sv_unmagic(sv, 'f');
1628 Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg)
1630 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
1632 if (uf && uf->uf_set)
1633 (*uf->uf_set)(uf->uf_index, sv);
1638 Perl_magic_freeregexp(pTHX_ SV *sv, MAGIC *mg)
1640 regexp *re = (regexp *)mg->mg_obj;
1645 #ifdef USE_LOCALE_COLLATE
1647 Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg)
1650 * RenE<eacute> Descartes said "I think not."
1651 * and vanished with a faint plop.
1654 Safefree(mg->mg_ptr);
1660 #endif /* USE_LOCALE_COLLATE */
1663 Perl_magic_set(pTHX_ SV *sv, MAGIC *mg)
1669 switch (*mg->mg_ptr) {
1670 case '\001': /* ^A */
1671 sv_setsv(PL_bodytarget, sv);
1673 case '\003': /* ^C */
1674 PL_minus_c = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1677 case '\004': /* ^D */
1678 PL_debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000;
1679 DEBUG_x(dump_all());
1681 case '\005': /* ^E */
1682 #ifdef MACOS_TRADITIONAL
1683 gMacPerl_OSErr = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1686 set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1689 SetLastError( SvIV(sv) );
1692 /* will anyone ever use this? */
1693 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4);
1699 case '\006': /* ^F */
1700 PL_maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1702 case '\010': /* ^H */
1703 PL_hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1705 case '\011': /* ^I */ /* NOT \t in EBCDIC */
1707 Safefree(PL_inplace);
1709 PL_inplace = savepv(SvPV(sv,len));
1711 PL_inplace = Nullch;
1713 case '\017': /* ^O */
1715 Safefree(PL_osname);
1717 PL_osname = savepv(SvPV(sv,len));
1721 case '\020': /* ^P */
1722 PL_perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1723 if (PL_perldb && !PL_DBsingle)
1726 case '\024': /* ^T */
1728 PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv));
1730 PL_basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1733 case '\027': /* ^W & $^WARNING_BITS & ^WIDE_SYSTEM_CALLS */
1734 if (*(mg->mg_ptr+1) == '\0') {
1735 if ( ! (PL_dowarn & G_WARN_ALL_MASK)) {
1736 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1737 PL_dowarn = (PL_dowarn & ~G_WARN_ON)
1738 | (i ? G_WARN_ON : G_WARN_OFF) ;
1741 else if (strEQ(mg->mg_ptr, "\027ARNING_BITS")) {
1742 if ( ! (PL_dowarn & G_WARN_ALL_MASK)) {
1743 if (!SvPOK(sv) && PL_localizing) {
1744 sv_setpvn(sv, WARN_NONEstring, WARNsize);
1745 PL_compiling.cop_warnings = pWARN_NONE;
1748 if (isWARN_on(sv, WARN_ALL) && !isWARNf_on(sv, WARN_ALL)) {
1749 PL_compiling.cop_warnings = pWARN_ALL;
1750 PL_dowarn |= G_WARN_ONCE ;
1754 int accumulate = 0 ;
1755 char * ptr = (char*)SvPV(sv, len) ;
1756 for (i = 0 ; i < len ; ++i)
1757 accumulate += ptr[i] ;
1759 PL_compiling.cop_warnings = pWARN_NONE;
1761 if (specialWARN(PL_compiling.cop_warnings))
1762 PL_compiling.cop_warnings = newSVsv(sv) ;
1764 sv_setsv(PL_compiling.cop_warnings, sv);
1765 if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE))
1766 PL_dowarn |= G_WARN_ONCE ;
1771 else if (strEQ(mg->mg_ptr, "\027IDE_SYSTEM_CALLS"))
1772 PL_widesyscalls = SvTRUE(sv);
1775 if (PL_localizing) {
1776 if (PL_localizing == 1)
1777 SAVESPTR(PL_last_in_gv);
1779 else if (SvOK(sv) && GvIO(PL_last_in_gv))
1780 IoLINES(GvIOp(PL_last_in_gv)) = (long)SvIV(sv);
1783 Safefree(IoTOP_NAME(GvIOp(PL_defoutgv)));
1784 IoTOP_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len));
1785 IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1788 Safefree(IoFMT_NAME(GvIOp(PL_defoutgv)));
1789 IoFMT_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len));
1790 IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1793 IoPAGE_LEN(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1796 IoLINES_LEFT(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1797 if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L)
1798 IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L;
1801 IoPAGE(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1805 IO *io = GvIOp(PL_defoutgv);
1806 if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0)
1807 IoFLAGS(io) &= ~IOf_FLUSH;
1809 if (!(IoFLAGS(io) & IOf_FLUSH)) {
1810 PerlIO *ofp = IoOFP(io);
1812 (void)PerlIO_flush(ofp);
1813 IoFLAGS(io) |= IOf_FLUSH;
1819 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1820 PL_multiline = (i != 0);
1823 SvREFCNT_dec(PL_nrs);
1824 PL_nrs = newSVsv(sv);
1825 SvREFCNT_dec(PL_rs);
1826 PL_rs = SvREFCNT_inc(PL_nrs);
1831 if (SvOK(sv) || SvGMAGICAL(sv)) {
1832 s = SvPV(sv,PL_orslen);
1833 PL_ors = savepvn(s,PL_orslen);
1843 PL_ofs = savepv(SvPV(sv, PL_ofslen));
1848 PL_ofmt = savepv(SvPV(sv,len));
1851 PL_compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1854 #ifdef COMPLEX_STATUS
1855 if (PL_localizing == 2) {
1856 PL_statusvalue = LvTARGOFF(sv);
1857 PL_statusvalue_vms = LvTARGLEN(sv);
1861 #ifdef VMSISH_STATUS
1863 STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)));
1866 STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1869 SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0,
1870 (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno);
1873 PL_uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1874 if (PL_delaymagic) {
1875 PL_delaymagic |= DM_RUID;
1876 break; /* don't do magic till later */
1879 (void)setruid((Uid_t)PL_uid);
1882 (void)setreuid((Uid_t)PL_uid, (Uid_t)-1);
1884 #ifdef HAS_SETRESUID
1885 (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1);
1887 if (PL_uid == PL_euid) /* special case $< = $> */
1888 (void)PerlProc_setuid(PL_uid);
1890 PL_uid = PerlProc_getuid();
1891 Perl_croak(aTHX_ "setruid() not implemented");
1896 PL_uid = PerlProc_getuid();
1897 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
1900 PL_euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1901 if (PL_delaymagic) {
1902 PL_delaymagic |= DM_EUID;
1903 break; /* don't do magic till later */
1906 (void)seteuid((Uid_t)PL_euid);
1909 (void)setreuid((Uid_t)-1, (Uid_t)PL_euid);
1911 #ifdef HAS_SETRESUID
1912 (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1);
1914 if (PL_euid == PL_uid) /* special case $> = $< */
1915 PerlProc_setuid(PL_euid);
1917 PL_euid = PerlProc_geteuid();
1918 Perl_croak(aTHX_ "seteuid() not implemented");
1923 PL_euid = PerlProc_geteuid();
1924 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
1927 PL_gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1928 if (PL_delaymagic) {
1929 PL_delaymagic |= DM_RGID;
1930 break; /* don't do magic till later */
1933 (void)setrgid((Gid_t)PL_gid);
1936 (void)setregid((Gid_t)PL_gid, (Gid_t)-1);
1938 #ifdef HAS_SETRESGID
1939 (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1);
1941 if (PL_gid == PL_egid) /* special case $( = $) */
1942 (void)PerlProc_setgid(PL_gid);
1944 PL_gid = PerlProc_getgid();
1945 Perl_croak(aTHX_ "setrgid() not implemented");
1950 PL_gid = PerlProc_getgid();
1951 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
1954 #ifdef HAS_SETGROUPS
1956 char *p = SvPV(sv, len);
1957 Groups_t gary[NGROUPS];
1962 for (i = 0; i < NGROUPS; ++i) {
1963 while (*p && !isSPACE(*p))
1972 (void)setgroups(i, gary);
1974 #else /* HAS_SETGROUPS */
1975 PL_egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1976 #endif /* HAS_SETGROUPS */
1977 if (PL_delaymagic) {
1978 PL_delaymagic |= DM_EGID;
1979 break; /* don't do magic till later */
1982 (void)setegid((Gid_t)PL_egid);
1985 (void)setregid((Gid_t)-1, (Gid_t)PL_egid);
1987 #ifdef HAS_SETRESGID
1988 (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1);
1990 if (PL_egid == PL_gid) /* special case $) = $( */
1991 (void)PerlProc_setgid(PL_egid);
1993 PL_egid = PerlProc_getegid();
1994 Perl_croak(aTHX_ "setegid() not implemented");
1999 PL_egid = PerlProc_getegid();
2000 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
2003 PL_chopset = SvPV_force(sv,len);
2005 #ifndef MACOS_TRADITIONAL
2007 #ifdef HAS_SETPROCTITLE
2008 /* The BSDs don't show the argv[] in ps(1) output, they
2009 * show a string from the process struct and provide
2010 * the setproctitle() routine to manipulate that. */
2013 # if __FreeBSD_version >= 410001
2014 /* The leading "-" removes the "perl: " prefix,
2015 * but not the "(perl) suffix from the ps(1)
2016 * output, because that's what ps(1) shows if the
2017 * argv[] is modified. */
2018 setproctitle("-%s", s, len + 1);
2019 # else /* old FreeBSDs, NetBSD, OpenBSD, anyBSD */
2020 /* This doesn't really work if you assume that
2021 * $0 = 'foobar'; will wipe out 'perl' from the $0
2022 * because in ps(1) output the result will be like
2023 * sprintf("perl: %s (perl)", s)
2024 * I guess this is a security feature:
2025 * one (a user process) cannot get rid of the original name.
2027 setproctitle("%s", s);
2034 /* See if all the arguments are contiguous in memory */
2035 for (i = 1; i < PL_origargc; i++) {
2036 if (PL_origargv[i] == s + 1
2038 || PL_origargv[i] == s + 2
2043 s += strlen(s); /* this one is ok too */
2048 /* can grab env area too? */
2049 if (PL_origenviron && (PL_origenviron[0] == s + 1
2051 || (PL_origenviron[0] == s + 9 && (s += 8))
2054 my_setenv("NoNe SuCh", Nullch);
2055 /* force copy of environment */
2056 for (i = 0; PL_origenviron[i]; i++)
2057 if (PL_origenviron[i] == s + 1) {
2064 PL_origalen = s - PL_origargv[0];
2066 s = SvPV_force(sv,len);
2068 if (i >= PL_origalen) {
2070 /* don't allow system to limit $0 seen by script */
2071 /* SvCUR_set(sv, i); *SvEND(sv) = '\0'; */
2072 Copy(s, PL_origargv[0], i, char);
2073 s = PL_origargv[0]+i;
2077 Copy(s, PL_origargv[0], i, char);
2078 s = PL_origargv[0]+i;
2080 while (++i < PL_origalen)
2082 s = PL_origargv[0]+i;
2083 for (i = 1; i < PL_origargc; i++)
2084 PL_origargv[i] = Nullch;
2090 sv_setsv(thr->errsv, sv);
2092 #endif /* USE_THREADS */
2099 Perl_magic_mutexfree(pTHX_ SV *sv, MAGIC *mg)
2102 DEBUG_S(PerlIO_printf(Perl_debug_log,
2103 "0x%"UVxf": magic_mutexfree 0x%"UVxf"\n",
2104 PTR2UV(thr), PTR2UV(sv));)
2106 Perl_croak(aTHX_ "panic: magic_mutexfree");
2107 MUTEX_DESTROY(MgMUTEXP(mg));
2108 COND_DESTROY(MgCONDP(mg));
2111 #endif /* USE_THREADS */
2114 Perl_whichsig(pTHX_ char *sig)
2116 register char **sigv;
2118 for (sigv = PL_sig_name+1; *sigv; sigv++)
2119 if (strEQ(sig,*sigv))
2120 return PL_sig_num[sigv - PL_sig_name];
2122 if (strEQ(sig,"CHLD"))
2126 if (strEQ(sig,"CLD"))
2135 Perl_sighandler(int sig)
2137 #if defined(WIN32) && defined(PERL_IMPLICIT_CONTEXT)
2138 dTHXoa(PL_curinterp); /* fake TLS, because signals don't do TLS */
2145 SV *sv, *tSv = PL_Sv;
2149 I32 o_save_i = PL_savestack_ix;
2152 #if defined(WIN32) && defined(PERL_IMPLICIT_CONTEXT)
2153 PERL_SET_THX(aTHXo); /* fake TLS, see above */
2156 if (PL_savestack_ix + 15 <= PL_savestack_max)
2158 if (PL_markstack_ptr < PL_markstack_max - 2)
2160 if (PL_retstack_ix < PL_retstack_max - 2)
2162 if (PL_scopestack_ix < PL_scopestack_max - 3)
2165 if (!PL_psig_ptr[sig])
2166 Perl_die(aTHX_ "Signal SIG%s received, but no signal handler set.\n",
2169 /* Max number of items pushed there is 3*n or 4. We cannot fix
2170 infinity, so we fix 4 (in fact 5): */
2172 PL_savestack_ix += 5; /* Protect save in progress. */
2173 o_save_i = PL_savestack_ix;
2174 SAVEDESTRUCTOR_X(unwind_handler_stack, (void*)&flags);
2177 PL_markstack_ptr++; /* Protect mark. */
2180 PL_retstack[PL_retstack_ix] = NULL;
2183 PL_scopestack_ix += 1;
2184 /* sv_2cv is too complicated, try a simpler variant first: */
2185 if (!SvROK(PL_psig_ptr[sig]) || !(cv = (CV*)SvRV(PL_psig_ptr[sig]))
2186 || SvTYPE(cv) != SVt_PVCV)
2187 cv = sv_2cv(PL_psig_ptr[sig],&st,&gv,TRUE);
2189 if (!cv || !CvROOT(cv)) {
2190 if (ckWARN(WARN_SIGNAL))
2191 Perl_warner(aTHX_ WARN_SIGNAL, "SIG%s handler \"%s\" not defined.\n",
2192 PL_sig_name[sig], (gv ? GvENAME(gv)
2199 if(PL_psig_name[sig]) {
2200 sv = SvREFCNT_inc(PL_psig_name[sig]);
2204 sv = sv_newmortal();
2205 sv_setpv(sv,PL_sig_name[sig]);
2208 PUSHSTACKi(PERLSI_SIGNAL);
2213 call_sv((SV*)cv, G_DISCARD);
2218 PL_savestack_ix -= 8; /* Unprotect save in progress. */
2224 PL_scopestack_ix -= 1;
2227 PL_op = myop; /* Apparently not needed... */
2229 PL_Sv = tSv; /* Restore global temporaries. */
2240 restore_magic(pTHXo_ void *p)
2243 MGS* mgs = SSPTR(PTR2IV(p), MGS*);
2244 SV* sv = mgs->mgs_sv;
2249 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
2252 SvFLAGS(sv) |= mgs->mgs_flags;
2256 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
2259 mgs->mgs_sv = NULL; /* mark the MGS structure as restored */
2261 /* If we're still on top of the stack, pop us off. (That condition
2262 * will be satisfied if restore_magic was called explicitly, but *not*
2263 * if it's being called via leave_scope.)
2264 * The reason for doing this is that otherwise, things like sv_2cv()
2265 * may leave alloc gunk on the savestack, and some code
2266 * (e.g. sighandler) doesn't expect that...
2268 if (PL_savestack_ix == mgs->mgs_ss_ix)
2270 I32 popval = SSPOPINT;
2271 assert(popval == SAVEt_DESTRUCTOR_X);
2272 PL_savestack_ix -= 2;
2274 assert(popval == SAVEt_ALLOC);
2276 PL_savestack_ix -= popval;
2282 unwind_handler_stack(pTHXo_ void *p)
2285 U32 flags = *(U32*)p;
2288 PL_savestack_ix -= 5; /* Unprotect save in progress. */
2289 /* cxstack_ix-- Not needed, die already unwound it. */
2291 SvREFCNT_dec(sig_sv);