3 * Copyright (c) 1991-1994, 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 * But only a short way ahead its floor and the walls on either side were
12 * cloven by a great fissure, out of which the red glare came, now leaping
13 * up, now dying down into darkness; and all the while far below there was
14 * a rumour and a trouble as of great engines throbbing and labouring.
20 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
26 # include <sys/wait.h>
30 # include <sys/resource.h>
33 /* Put this after #includes because fork and vfork prototypes may
40 #if defined(HAS_SOCKET) && !defined(VMS) /* VMS handles sockets via vmsish.h */
41 # include <sys/socket.h>
45 # include <net/errno.h>
52 #include <sys/select.h>
64 struct passwd *getpwnam _((char *));
65 struct passwd *getpwuid _((Uid_t));
67 struct passwd *getpwent _((void));
74 struct group *getgrnam _((char *));
75 struct group *getgrgid _((Gid_t));
77 struct group *getgrent _((void));
90 #if !defined(HAS_MKDIR) || !defined(HAS_RMDIR)
91 static int dooneliner _((char *cmd, char *filename));
95 # ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
98 # define my_chsize chsize
103 #else /* no flock() */
105 /* fcntl.h might not have been included, even if it exists, because
106 the current Configure only sets I_FCNTL if it's needed to pick up
107 the *_OK constants. Make sure it has been included before testing
108 the fcntl() locking constants. */
109 # if defined(HAS_FCNTL) && !defined(I_FCNTL)
113 # if defined(HAS_FCNTL) && defined(F_SETLK) && defined (F_SETLKW)
114 # define FLOCK fcntl_emulate_flock
115 # define FCNTL_EMULATE_FLOCK
116 # else /* no flock() or fcntl(F_SETLK,...) */
118 # define FLOCK lockf_emulate_flock
119 # define LOCKF_EMULATE_FLOCK
121 # endif /* no flock() or fcntl(F_SETLK,...) */
124 static int FLOCK _((int, int));
127 * These are the flock() constants. Since this sytems doesn't have
128 * flock(), the values of the constants are probably not available.
142 # endif /* emulating flock() */
144 #endif /* no flock() */
155 fp = my_popen(tmps, "r");
157 sv_setpv(TARG, ""); /* note that this preserves previous buffer */
158 if (GIMME == G_SCALAR) {
159 while (sv_gets(TARG, fp, SvCUR(TARG)) != Nullch)
169 if (sv_gets(sv, fp, 0) == Nullch) {
173 XPUSHs(sv_2mortal(sv));
174 if (SvLEN(sv) - SvCUR(sv) > 20) {
175 SvLEN_set(sv, SvCUR(sv)+1);
176 Renew(SvPVX(sv), SvLEN(sv), char);
180 statusvalue = FIXSTATUS(my_pclose(fp));
184 if (GIMME == G_SCALAR)
196 SAVESPTR(last_in_gv); /* We don't want this to be permanent. */
197 last_in_gv = (GV*)*stack_sp--;
199 SAVESPTR(rs); /* This is not permanent, either. */
200 rs = sv_2mortal(newSVpv("", 1));
207 result = do_readline();
214 last_in_gv = gv_fetchpv(SvPVx(GvSV((GV*)(*stack_sp--)), na), TRUE,SVt_PVIO);
215 return do_readline();
220 last_in_gv = cGVOP->op_gv;
221 return do_readline();
228 if (SP - MARK != 1) {
230 do_join(TARG, &sv_no, MARK, SP);
231 tmps = SvPV(TARG, na);
235 tmps = SvPV(TOPs, na);
237 if (!tmps || !*tmps) {
238 SV *error = GvSV(errgv);
239 (void)SvUPGRADE(error, SVt_PV);
240 if (SvPOK(error) && SvCUR(error))
241 sv_catpv(error, "\t...caught");
242 tmps = SvPV(error, na);
245 tmps = "Warning: something's wrong";
254 if (SP - MARK != 1) {
256 do_join(TARG, &sv_no, MARK, SP);
257 tmps = SvPV(TARG, na);
261 tmps = SvPV(TOPs, na);
263 if (!tmps || !*tmps) {
264 SV *error = GvSV(errgv);
265 (void)SvUPGRADE(error, SVt_PV);
266 if (SvPOK(error) && SvCUR(error))
267 sv_catpv(error, "\t...propagated");
268 tmps = SvPV(error, na);
288 DIE(no_usym, "filehandle");
293 DIE(no_usym, "filehandle");
295 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
296 tmps = SvPV(sv, len);
297 if (do_open(gv, tmps, len, FALSE, 0, 0, Nullfp))
298 PUSHi( (I32)forkprocess );
299 else if (forkprocess == 0) /* we are a new child */
316 PUSHs( do_close(gv, TRUE) ? &sv_yes : &sv_no );
336 if (SvTYPE(rgv) != SVt_PVGV || SvTYPE(wgv) != SVt_PVGV)
337 DIE(no_usym, "filehandle");
342 do_close(rgv, FALSE);
344 do_close(wgv, FALSE);
349 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
350 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
351 IoIFP(wstio) = IoOFP(wstio);
355 if (!IoIFP(rstio) || !IoOFP(wstio)) {
356 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
358 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
368 DIE(no_func, "pipe");
381 if (!gv || !(io = GvIO(gv)) || !(fp = IoIFP(io)))
383 PUSHi(PerlIO_fileno(fp));
399 TAINT_PROPER("umask");
402 DIE(no_func, "Unsupported function umask");
420 if (!(io = GvIO(gv)) || !(fp = IoIFP(io)))
425 if (!PerlIO_flush(fp) && (fp->_flag |= _IOBIN))
430 if (setmode(PerlIO_fileno(fp), OP_BINARY) != -1)
436 #if defined(USEMYBINMODE)
437 if (my_binmode(fp,IoTYPE(io)) != NULL)
456 SV **mark = stack_base + ++*markstack_ptr; /* reuse in entersub */
457 I32 markoff = mark - stack_base - 1;
461 if (SvTYPE(varsv) == SVt_PVHV)
462 methname = "TIEHASH";
463 else if (SvTYPE(varsv) == SVt_PVAV)
464 methname = "TIEARRAY";
465 else if (SvTYPE(varsv) == SVt_PVGV)
466 methname = "TIEHANDLE";
468 methname = "TIESCALAR";
470 stash = gv_stashsv(mark[1], FALSE);
471 if (!stash || !(gv = gv_fetchmethod(stash, methname)))
472 DIE("Can't locate object method \"%s\" via package \"%s\"",
473 methname, SvPV(mark[1],na));
475 Zero(&myop, 1, BINOP);
476 myop.op_last = (OP *) &myop;
477 myop.op_next = Nullop;
478 myop.op_flags = OPf_KNOW|OPf_STACKED;
483 if (perldb && curstash != debstash)
484 op->op_private |= OPpENTERSUB_DB;
486 XPUSHs((SV*)GvCV(gv));
489 if (op = pp_entersub())
494 if (sv_isobject(sv)) {
495 if (SvTYPE(varsv) == SVt_PVHV || SvTYPE(varsv) == SVt_PVAV) {
496 sv_unmagic(varsv, 'P');
497 sv_magic(varsv, sv, 'P', Nullch, 0);
500 sv_unmagic(varsv, 'q');
501 sv_magic(varsv, sv, 'q', Nullch, 0);
505 SP = stack_base + markoff;
520 if (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
521 mg = mg_find(sv, 'P') ;
523 mg = mg_find(sv, 'q') ;
525 if (mg && SvREFCNT(SvRV(mg->mg_obj)) > 1)
526 warn("untie attempted while %d inner references still exist",
527 SvREFCNT(SvRV(mg->mg_obj)) - 1 ) ;
531 if (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
546 if (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
547 mg = mg_find(sv, 'P') ;
549 mg = mg_find(sv, 'q') ;
552 PUSHs(sv_2mortal(newSVsv(mg->mg_obj))) ;
572 sv = sv_mortalcopy(&sv_no);
573 sv_setpv(sv, "AnyDBM_File");
574 stash = gv_stashsv(sv, FALSE);
575 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
577 perl_require_pv("AnyDBM_File.pm");
579 if (!(gv = gv_fetchmethod(stash, "TIEHASH")))
580 DIE("No dbm on this machine");
583 Zero(&myop, 1, BINOP);
584 myop.op_last = (OP *) &myop;
585 myop.op_next = Nullop;
586 myop.op_flags = OPf_KNOW|OPf_STACKED;
591 if (perldb && curstash != debstash)
592 op->op_private |= OPpENTERSUB_DB;
600 PUSHs(sv_2mortal(newSViv(O_RDWR|O_CREAT)));
602 PUSHs(sv_2mortal(newSViv(O_RDWR)));
604 PUSHs((SV*)GvCV(gv));
607 if (op = pp_entersub())
611 if (!sv_isobject(TOPs)) {
619 PUSHs(sv_2mortal(newSViv(O_RDONLY)));
621 PUSHs((SV*)GvCV(gv));
624 if (op = pp_entersub())
629 if (sv_isobject(TOPs))
630 sv_magic((SV*)hv, TOPs, 'P', Nullch, 0);
637 return pp_untie(ARGS);
651 struct timeval timebuf;
652 struct timeval *tbuf = &timebuf;
655 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
660 # if BYTEORDER & 0xf0000
661 # define ORDERBYTE (0x88888888 - BYTEORDER)
663 # define ORDERBYTE (0x4444 - BYTEORDER)
669 for (i = 1; i <= 3; i++) {
677 #if BYTEORDER == 0x1234 || BYTEORDER == 0x12345678
678 #if defined(__linux__) || defined(OS2)
679 growsize = sizeof(fd_set);
681 growsize = maxlen; /* little endians can use vecs directly */
690 masksize = NFDBITS / NBBY;
692 masksize = sizeof(long); /* documented int, everyone seems to use long */
694 growsize = maxlen + (masksize - (maxlen % masksize));
695 Zero(&fd_sets[0], 4, char*);
703 timebuf.tv_sec = (long)value;
704 value -= (double)timebuf.tv_sec;
705 timebuf.tv_usec = (long)(value * 1000000.0);
708 tbuf = Null(struct timeval*);
710 for (i = 1; i <= 3; i++) {
717 SvPV_force(sv,na); /* force string conversion */
720 Sv_Grow(sv, growsize);
724 while (++j <= growsize) {
728 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
730 New(403, fd_sets[i], growsize, char);
731 for (offset = 0; offset < growsize; offset += masksize) {
732 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
733 fd_sets[i][j+offset] = s[(k % masksize) + offset];
736 fd_sets[i] = SvPVX(sv);
742 (Select_fd_set_t) fd_sets[1],
743 (Select_fd_set_t) fd_sets[2],
744 (Select_fd_set_t) fd_sets[3],
746 for (i = 1; i <= 3; i++) {
749 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
751 for (offset = 0; offset < growsize; offset += masksize) {
752 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
753 s[(k % masksize) + offset] = fd_sets[i][j+offset];
755 Safefree(fd_sets[i]);
762 if (GIMME == G_ARRAY && tbuf) {
763 value = (double)(timebuf.tv_sec) +
764 (double)(timebuf.tv_usec) / 1000000.0;
765 PUSHs(sv = sv_mortalcopy(&sv_no));
770 DIE("select not implemented");
779 (void)SvREFCNT_inc(gv);
781 SvREFCNT_dec(defoutgv);
791 newdefout = (op->op_private > 0) ? ((GV *) POPs) : NULL;
793 egv = GvEGV(defoutgv);
800 GV **gvp = (GV**)hv_fetch(hv, GvNAME(egv), GvNAMELEN(egv), FALSE);
801 if (gvp && *gvp == egv)
802 gv_efullname3(TARG, defoutgv, Nullch);
804 sv_setsv(TARG, sv_2mortal(newRV((SV*)egv)));
809 if (!GvIO(newdefout))
811 setdefout(newdefout);
828 if (!gv || do_eof(gv)) /* make sure we have fp with something */
832 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
839 return pp_sysread(ARGS);
848 register CONTEXT *cx;
850 AV* padlist = CvPADLIST(cv);
851 SV** svp = AvARRAY(padlist);
857 PUSHBLOCK(cx, CXt_SUB, stack_sp);
860 curpad = AvARRAY((AV*)svp[1]);
862 setdefout(gv); /* locally select filehandle so $% et al work */
894 SV *tmpsv = sv_newmortal();
895 gv_efullname3(tmpsv, fgv, Nullch);
896 DIE("Undefined format \"%s\" called",SvPVX(tmpsv));
898 DIE("Not a format reference");
901 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
903 IoFLAGS(io) &= ~IOf_DIDTOP;
904 return doform(cv,gv,op->op_next);
910 GV *gv = cxstack[cxstack_ix].blk_sub.gv;
911 register IO *io = GvIOp(gv);
912 PerlIO *ofp = IoOFP(io);
916 register CONTEXT *cx;
918 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
919 (long)IoLINES_LEFT(io), (long)FmLINES(formtarget)));
920 if (IoLINES_LEFT(io) < FmLINES(formtarget) &&
921 formtarget != toptarget)
929 if (!IoTOP_NAME(io)) {
931 IoFMT_NAME(io) = savepv(GvNAME(gv));
932 sprintf(tmpbuf, "%s_TOP", IoFMT_NAME(io));
933 topgv = gv_fetchpv(tmpbuf,FALSE, SVt_PVFM);
934 if ((topgv && GvFORM(topgv)) ||
935 !gv_fetchpv("top",FALSE,SVt_PVFM))
936 IoTOP_NAME(io) = savepv(tmpbuf);
938 IoTOP_NAME(io) = savepv("top");
940 topgv = gv_fetchpv(IoTOP_NAME(io),FALSE, SVt_PVFM);
941 if (!topgv || !GvFORM(topgv)) {
942 IoLINES_LEFT(io) = 100000000;
945 IoTOP_GV(io) = topgv;
947 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
948 I32 lines = IoLINES_LEFT(io);
949 char *s = SvPVX(formtarget);
950 if (lines <= 0) /* Yow, header didn't even fit!!! */
952 while (lines-- > 0) {
959 PerlIO_write(ofp, SvPVX(formtarget), s - SvPVX(formtarget));
960 sv_chop(formtarget, s);
961 FmLINES(formtarget) -= IoLINES_LEFT(io);
964 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
965 PerlIO_write(ofp, SvPVX(formfeed), SvCUR(formfeed));
966 IoLINES_LEFT(io) = IoPAGE_LEN(io);
968 formtarget = toptarget;
969 IoFLAGS(io) |= IOf_DIDTOP;
972 DIE("bad top format reference");
975 SV *tmpsv = sv_newmortal();
976 gv_efullname3(tmpsv, fgv, Nullch);
977 DIE("Undefined top format \"%s\" called",SvPVX(tmpsv));
980 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
981 return doform(cv,gv,op);
993 warn("Filehandle only opened for input");
995 warn("Write on closed filehandle");
1000 if ((IoLINES_LEFT(io) -= FmLINES(formtarget)) < 0) {
1002 warn("page overflow");
1004 if (!PerlIO_write(ofp, SvPVX(formtarget), SvCUR(formtarget)) ||
1008 FmLINES(formtarget) = 0;
1009 SvCUR_set(formtarget, 0);
1010 *SvEND(formtarget) = '\0';
1011 if (IoFLAGS(io) & IOf_FLUSH)
1012 (void)PerlIO_flush(fp);
1016 formtarget = bodytarget;
1018 return pop_return();
1023 dSP; dMARK; dORIGMARK;
1027 SV *sv = NEWSV(0,0);
1029 if (op->op_flags & OPf_STACKED)
1033 if (!(io = GvIO(gv))) {
1035 gv_fullname3(sv, gv, Nullch);
1036 warn("Filehandle %s never opened", SvPV(sv,na));
1038 SETERRNO(EBADF,RMS$_IFI);
1041 else if (!(fp = IoOFP(io))) {
1043 gv_fullname3(sv, gv, Nullch);
1045 warn("Filehandle %s opened only for input", SvPV(sv,na));
1047 warn("printf on closed filehandle %s", SvPV(sv,na));
1049 SETERRNO(EBADF,IoIFP(io)?RMS$_FAC:RMS$_IFI);
1053 #ifdef USE_LOCALE_NUMERIC
1054 if (op->op_private & OPpLOCALE)
1055 SET_NUMERIC_LOCAL();
1057 SET_NUMERIC_STANDARD();
1059 do_sprintf(sv, SP - MARK, MARK + 1);
1060 if (!do_print(sv, fp))
1063 if (IoFLAGS(io) & IOf_FLUSH)
1064 if (PerlIO_flush(fp) == EOF)
1096 tmps = SvPV(sv, len);
1097 if (do_open(gv, tmps, len, TRUE, mode, perm, Nullfp)) {
1098 IoLINES(GvIOp(gv)) = 0;
1109 dSP; dMARK; dORIGMARK; dTARGET;
1124 sv_setpvn(bufsv, "", 0);
1125 buffer = SvPV_force(bufsv, blen);
1126 length = SvIVx(*++MARK);
1128 DIE("Negative length");
1131 offset = SvIVx(*++MARK);
1135 if (!io || !IoIFP(io))
1138 if (op->op_type == OP_RECV) {
1139 bufsize = sizeof buf;
1140 buffer = SvGROW(bufsv, length+1);
1141 /* 'offset' means 'flags' here */
1142 length = recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
1143 (struct sockaddr *)buf, &bufsize);
1146 SvCUR_set(bufsv, length);
1147 *SvEND(bufsv) = '\0';
1148 (void)SvPOK_only(bufsv);
1150 /* This should not be marked tainted if the fp is marked clean */
1151 if (!(IoFLAGS(io) & IOf_UNTAINT))
1152 SvTAINTED_on(bufsv);
1154 sv_setpvn(TARG, buf, bufsize);
1159 if (op->op_type == OP_RECV)
1160 DIE(no_sock_func, "recv");
1164 DIE("Offset outside string");
1167 bufsize = SvCUR(bufsv);
1168 buffer = SvGROW(bufsv, length+offset+1);
1169 if (offset > bufsize) { /* Zero any newly allocated space */
1170 Zero(buffer+bufsize, offset-bufsize, char);
1172 if (op->op_type == OP_SYSREAD) {
1173 length = read(PerlIO_fileno(IoIFP(io)), buffer+offset, length);
1176 #ifdef HAS_SOCKET__bad_code_maybe
1177 if (IoTYPE(io) == 's') {
1178 bufsize = sizeof buf;
1179 length = recvfrom(PerlIO_fileno(IoIFP(io)), buffer+offset, length, 0,
1180 (struct sockaddr *)buf, &bufsize);
1184 length = PerlIO_read(IoIFP(io), buffer+offset, length);
1187 SvCUR_set(bufsv, length+offset);
1188 *SvEND(bufsv) = '\0';
1189 (void)SvPOK_only(bufsv);
1191 /* This should not be marked tainted if the fp is marked clean */
1192 if (!(IoFLAGS(io) & IOf_UNTAINT))
1193 SvTAINTED_on(bufsv);
1205 return pp_send(ARGS);
1210 dSP; dMARK; dORIGMARK; dTARGET;
1223 buffer = SvPV(bufsv, blen);
1224 length = SvIVx(*++MARK);
1226 DIE("Negative length");
1229 if (!io || !IoIFP(io)) {
1232 if (op->op_type == OP_SYSWRITE)
1233 warn("Syswrite on closed filehandle");
1235 warn("Send on closed socket");
1238 else if (op->op_type == OP_SYSWRITE) {
1240 offset = SvIVx(*++MARK);
1243 DIE("Offset outside string");
1245 } else if (offset >= blen)
1246 DIE("Offset outside string");
1249 if (length > blen - offset)
1250 length = blen - offset;
1251 length = write(PerlIO_fileno(IoIFP(io)), buffer+offset, length);
1254 else if (SP > MARK) {
1257 sockbuf = SvPVx(*++MARK, mlen);
1258 length = sendto(PerlIO_fileno(IoIFP(io)), buffer, blen, length,
1259 (struct sockaddr *)sockbuf, mlen);
1262 length = send(PerlIO_fileno(IoIFP(io)), buffer, blen, length);
1265 DIE(no_sock_func, "send");
1280 return pp_sysread(ARGS);
1291 gv = last_in_gv = (GV*)POPs;
1292 PUSHs(!gv || do_eof(gv) ? &sv_yes : &sv_no);
1304 gv = last_in_gv = (GV*)POPs;
1305 PUSHi( do_tell(gv) );
1316 gv = last_in_gv = (GV*)POPs;
1317 PUSHs( do_seek(gv, offset, whence) ? &sv_yes : &sv_no );
1324 Off_t len = (Off_t)POPn;
1329 #if defined(HAS_TRUNCATE) || defined(HAS_CHSIZE) || defined(F_FREESP)
1330 if (op->op_flags & OPf_SPECIAL) {
1331 tmpgv = gv_fetchpv(POPp,FALSE, SVt_PVIO);
1333 if (!GvIO(tmpgv) || !IoIFP(GvIOp(tmpgv)) ||
1335 ftruncate(PerlIO_fileno(IoIFP(GvIOn(tmpgv))), len) < 0)
1337 my_chsize(PerlIO_fileno(IoIFP(GvIOn(tmpgv))), len) < 0)
1343 if (SvTYPE(sv) == SVt_PVGV) {
1344 tmpgv = (GV*)sv; /* *main::FRED for example */
1347 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
1348 tmpgv = (GV*) SvRV(sv); /* \*main::FRED for example */
1352 if (truncate (SvPV (sv, na), len) < 0)
1358 if ((tmpfd = open(SvPV (sv, na), O_RDWR)) < 0)
1361 if (my_chsize(tmpfd, len) < 0)
1372 SETERRNO(EBADF,RMS$_IFI);
1375 DIE("truncate not implemented");
1381 return pp_ioctl(ARGS);
1388 unsigned int func = U_I(POPn);
1389 int optype = op->op_type;
1395 if (!io || !argsv || !IoIFP(io)) {
1396 SETERRNO(EBADF,RMS$_IFI); /* well, sort of... */
1400 if (SvPOK(argsv) || !SvNIOK(argsv)) {
1402 s = SvPV_force(argsv, len);
1403 retval = IOCPARM_LEN(func);
1405 s = Sv_Grow(argsv, retval+1);
1406 SvCUR_set(argsv, retval);
1409 s[SvCUR(argsv)] = 17; /* a little sanity check here */
1412 retval = SvIV(argsv);
1414 s = (char*)(long)retval; /* ouch */
1416 s = (char*)retval; /* ouch */
1420 TAINT_PROPER(optype == OP_IOCTL ? "ioctl" : "fcntl");
1422 if (optype == OP_IOCTL)
1424 retval = ioctl(PerlIO_fileno(IoIFP(io)), func, s);
1426 DIE("ioctl is not implemented");
1430 #if defined(OS2) && defined(__EMX__)
1431 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
1433 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
1436 DIE("fcntl is not implemented");
1440 if (s[SvCUR(argsv)] != 17)
1441 DIE("Possible memory corruption: %s overflowed 3rd argument",
1443 s[SvCUR(argsv)] = 0; /* put our null back */
1444 SvSETMAGIC(argsv); /* Assume it has changed */
1453 PUSHp("0 but true", 10);
1473 fp = IoIFP(GvIOp(gv));
1477 value = (I32)(FLOCK(PerlIO_fileno(fp), argtype) >= 0);
1484 DIE(no_func, "flock()");
1496 int protocol = POPi;
1504 SETERRNO(EBADF,LIB$_INVARG);
1510 do_close(gv, FALSE);
1512 TAINT_PROPER("socket");
1513 fd = socket(domain, type, protocol);
1516 IoIFP(io) = PerlIO_fdopen(fd, "r"); /* stdio gets confused about sockets */
1517 IoOFP(io) = PerlIO_fdopen(fd, "w");
1519 if (!IoIFP(io) || !IoOFP(io)) {
1520 if (IoIFP(io)) PerlIO_close(IoIFP(io));
1521 if (IoOFP(io)) PerlIO_close(IoOFP(io));
1522 if (!IoIFP(io) && !IoOFP(io)) close(fd);
1528 DIE(no_sock_func, "socket");
1535 #ifdef HAS_SOCKETPAIR
1540 int protocol = POPi;
1553 do_close(gv1, FALSE);
1555 do_close(gv2, FALSE);
1557 TAINT_PROPER("socketpair");
1558 if (socketpair(domain, type, protocol, fd) < 0)
1560 IoIFP(io1) = PerlIO_fdopen(fd[0], "r");
1561 IoOFP(io1) = PerlIO_fdopen(fd[0], "w");
1563 IoIFP(io2) = PerlIO_fdopen(fd[1], "r");
1564 IoOFP(io2) = PerlIO_fdopen(fd[1], "w");
1566 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
1567 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
1568 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
1569 if (!IoIFP(io1) && !IoOFP(io1)) close(fd[0]);
1570 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
1571 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
1572 if (!IoIFP(io2) && !IoOFP(io2)) close(fd[1]);
1578 DIE(no_sock_func, "socketpair");
1589 register IO *io = GvIOn(gv);
1592 if (!io || !IoIFP(io))
1595 addr = SvPV(addrsv, len);
1596 TAINT_PROPER("bind");
1597 if (bind(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
1604 warn("bind() on closed fd");
1605 SETERRNO(EBADF,SS$_IVCHAN);
1608 DIE(no_sock_func, "bind");
1619 register IO *io = GvIOn(gv);
1622 if (!io || !IoIFP(io))
1625 addr = SvPV(addrsv, len);
1626 TAINT_PROPER("connect");
1627 if (connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
1634 warn("connect() on closed fd");
1635 SETERRNO(EBADF,SS$_IVCHAN);
1638 DIE(no_sock_func, "connect");
1648 register IO *io = GvIOn(gv);
1650 if (!io || !IoIFP(io))
1653 if (listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
1660 warn("listen() on closed fd");
1661 SETERRNO(EBADF,SS$_IVCHAN);
1664 DIE(no_sock_func, "listen");
1676 struct sockaddr saddr; /* use a struct to avoid alignment problems */
1677 int len = sizeof saddr;
1689 if (!gstio || !IoIFP(gstio))
1694 do_close(ngv, FALSE);
1696 fd = accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *)&saddr, &len);
1699 IoIFP(nstio) = PerlIO_fdopen(fd, "r");
1700 IoOFP(nstio) = PerlIO_fdopen(fd, "w");
1701 IoTYPE(nstio) = 's';
1702 if (!IoIFP(nstio) || !IoOFP(nstio)) {
1703 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
1704 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
1705 if (!IoIFP(nstio) && !IoOFP(nstio)) close(fd);
1709 PUSHp((char *)&saddr, len);
1714 warn("accept() on closed fd");
1715 SETERRNO(EBADF,SS$_IVCHAN);
1721 DIE(no_sock_func, "accept");
1731 register IO *io = GvIOn(gv);
1733 if (!io || !IoIFP(io))
1736 PUSHi( shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
1741 warn("shutdown() on closed fd");
1742 SETERRNO(EBADF,SS$_IVCHAN);
1745 DIE(no_sock_func, "shutdown");
1752 return pp_ssockopt(ARGS);
1754 DIE(no_sock_func, "getsockopt");
1762 int optype = op->op_type;
1765 unsigned int optname;
1771 if (optype == OP_GSOCKOPT)
1772 sv = sv_2mortal(NEWSV(22, 257));
1775 optname = (unsigned int) POPi;
1776 lvl = (unsigned int) POPi;
1780 if (!io || !IoIFP(io))
1783 fd = PerlIO_fileno(IoIFP(io));
1787 (void)SvPOK_only(sv);
1791 if (getsockopt(fd, lvl, optname, SvPVX(sv), &aint) < 0)
1801 buf = SvPV(sv, len);
1802 else if (SvOK(sv)) {
1803 aint = (int)SvIV(sv);
1807 if (setsockopt(fd, lvl, optname, buf, (int)len) < 0)
1817 warn("[gs]etsockopt() on closed fd");
1818 SETERRNO(EBADF,SS$_IVCHAN);
1823 DIE(no_sock_func, "setsockopt");
1830 return pp_getpeername(ARGS);
1832 DIE(no_sock_func, "getsockname");
1840 int optype = op->op_type;
1844 register IO *io = GvIOn(gv);
1847 if (!io || !IoIFP(io))
1850 sv = sv_2mortal(NEWSV(22, 257));
1851 (void)SvPOK_only(sv);
1855 fd = PerlIO_fileno(IoIFP(io));
1857 case OP_GETSOCKNAME:
1858 if (getsockname(fd, (struct sockaddr *)SvPVX(sv), &aint) < 0)
1861 case OP_GETPEERNAME:
1862 if (getpeername(fd, (struct sockaddr *)SvPVX(sv), &aint) < 0)
1866 #ifdef BOGUS_GETNAME_RETURN
1867 /* Interactive Unix, getpeername() and getsockname()
1868 does not return valid namelen */
1869 if (aint == BOGUS_GETNAME_RETURN)
1870 aint = sizeof(struct sockaddr);
1879 warn("get{sock, peer}name() on closed fd");
1880 SETERRNO(EBADF,SS$_IVCHAN);
1885 DIE(no_sock_func, "getpeername");
1893 return pp_stat(ARGS);
1902 if (op->op_flags & OPf_REF) {
1903 tmpgv = cGVOP->op_gv;
1905 if (tmpgv != defgv) {
1906 laststype = OP_STAT;
1908 sv_setpv(statname, "");
1909 laststatval = (GvIO(tmpgv) && IoIFP(GvIOp(tmpgv))
1910 ? Fstat(PerlIO_fileno(IoIFP(GvIOn(tmpgv))), &statcache) : -1);
1912 if (laststatval < 0)
1917 if (SvTYPE(sv) == SVt_PVGV) {
1921 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
1922 tmpgv = (GV*)SvRV(sv);
1925 sv_setpv(statname, SvPV(sv,na));
1928 laststype = op->op_type;
1929 if (op->op_type == OP_LSTAT)
1930 laststatval = lstat(SvPV(statname, na), &statcache);
1933 laststatval = Stat(SvPV(statname, na), &statcache);
1934 if (laststatval < 0) {
1935 if (dowarn && strchr(SvPV(statname, na), '\n'))
1936 warn(warn_nl, "stat");
1941 if (GIMME != G_ARRAY) {
1952 PUSHs(sv_2mortal(newSViv((I32)statcache.st_dev)));
1953 PUSHs(sv_2mortal(newSViv((I32)statcache.st_ino)));
1954 PUSHs(sv_2mortal(newSViv((I32)statcache.st_mode)));
1955 PUSHs(sv_2mortal(newSViv((I32)statcache.st_nlink)));
1956 PUSHs(sv_2mortal(newSViv((I32)statcache.st_uid)));
1957 PUSHs(sv_2mortal(newSViv((I32)statcache.st_gid)));
1958 #ifdef USE_STAT_RDEV
1959 PUSHs(sv_2mortal(newSViv((I32)statcache.st_rdev)));
1961 PUSHs(sv_2mortal(newSVpv("", 0)));
1963 PUSHs(sv_2mortal(newSViv((I32)statcache.st_size)));
1965 PUSHs(sv_2mortal(newSVnv((U32)statcache.st_atime)));
1966 PUSHs(sv_2mortal(newSVnv((U32)statcache.st_mtime)));
1967 PUSHs(sv_2mortal(newSVnv((U32)statcache.st_ctime)));
1969 PUSHs(sv_2mortal(newSViv((I32)statcache.st_atime)));
1970 PUSHs(sv_2mortal(newSViv((I32)statcache.st_mtime)));
1971 PUSHs(sv_2mortal(newSViv((I32)statcache.st_ctime)));
1973 #ifdef USE_STAT_BLOCKS
1974 PUSHs(sv_2mortal(newSViv((I32)statcache.st_blksize)));
1975 PUSHs(sv_2mortal(newSViv((I32)statcache.st_blocks)));
1977 PUSHs(sv_2mortal(newSVpv("", 0)));
1978 PUSHs(sv_2mortal(newSVpv("", 0)));
1986 I32 result = my_stat(ARGS);
1990 if (cando(S_IRUSR, 0, &statcache))
1997 I32 result = my_stat(ARGS);
2001 if (cando(S_IWUSR, 0, &statcache))
2008 I32 result = my_stat(ARGS);
2012 if (cando(S_IXUSR, 0, &statcache))
2019 I32 result = my_stat(ARGS);
2023 if (cando(S_IRUSR, 1, &statcache))
2030 I32 result = my_stat(ARGS);
2034 if (cando(S_IWUSR, 1, &statcache))
2041 I32 result = my_stat(ARGS);
2045 if (cando(S_IXUSR, 1, &statcache))
2052 I32 result = my_stat(ARGS);
2061 return pp_ftrowned(ARGS);
2066 I32 result = my_stat(ARGS);
2070 if (statcache.st_uid == (op->op_type == OP_FTEOWNED ? euid : uid) )
2077 I32 result = my_stat(ARGS);
2081 if (!statcache.st_size)
2088 I32 result = my_stat(ARGS);
2092 PUSHi(statcache.st_size);
2098 I32 result = my_stat(ARGS);
2102 PUSHn( ((I32)basetime - (I32)statcache.st_mtime) / 86400.0 );
2108 I32 result = my_stat(ARGS);
2112 PUSHn( ((I32)basetime - (I32)statcache.st_atime) / 86400.0 );
2118 I32 result = my_stat(ARGS);
2122 PUSHn( ((I32)basetime - (I32)statcache.st_ctime) / 86400.0 );
2128 I32 result = my_stat(ARGS);
2132 if (S_ISSOCK(statcache.st_mode))
2139 I32 result = my_stat(ARGS);
2143 if (S_ISCHR(statcache.st_mode))
2150 I32 result = my_stat(ARGS);
2154 if (S_ISBLK(statcache.st_mode))
2161 I32 result = my_stat(ARGS);
2165 if (S_ISREG(statcache.st_mode))
2172 I32 result = my_stat(ARGS);
2176 if (S_ISDIR(statcache.st_mode))
2183 I32 result = my_stat(ARGS);
2187 if (S_ISFIFO(statcache.st_mode))
2194 I32 result = my_lstat(ARGS);
2198 if (S_ISLNK(statcache.st_mode))
2207 I32 result = my_stat(ARGS);
2211 if (statcache.st_mode & S_ISUID)
2221 I32 result = my_stat(ARGS);
2225 if (statcache.st_mode & S_ISGID)
2235 I32 result = my_stat(ARGS);
2239 if (statcache.st_mode & S_ISVTX)
2251 if (op->op_flags & OPf_REF) {
2256 gv = gv_fetchpv(tmps = POPp, FALSE, SVt_PVIO);
2257 if (GvIO(gv) && IoIFP(GvIOp(gv)))
2258 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
2259 else if (isDIGIT(*tmps))
2268 #if defined(atarist) /* this will work with atariST. Configure will
2269 make guesses for other systems. */
2270 # define FILE_base(f) ((f)->_base)
2271 # define FILE_ptr(f) ((f)->_ptr)
2272 # define FILE_cnt(f) ((f)->_cnt)
2273 # define FILE_bufsiz(f) ((f)->_cnt + ((f)->_ptr - (f)->_base))
2283 register STDCHAR *s;
2288 if (op->op_flags & OPf_REF)
2290 else if (isGV(TOPs))
2292 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
2293 gv = (GV*)SvRV(POPs);
2304 goto really_filename;
2310 sv_setpv(statname, "");
2313 if (io && IoIFP(io)) {
2314 if (! PerlIO_has_base(IoIFP(io)))
2315 DIE("-T and -B not implemented on filehandles");
2316 laststatval = Fstat(PerlIO_fileno(IoIFP(io)), &statcache);
2317 if (laststatval < 0)
2319 if (S_ISDIR(statcache.st_mode)) /* handle NFS glitch */
2320 if (op->op_type == OP_FTTEXT)
2324 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
2325 i = PerlIO_getc(IoIFP(io));
2327 (void)PerlIO_ungetc(IoIFP(io),i);
2329 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
2331 len = PerlIO_get_bufsiz(IoIFP(io));
2332 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
2333 /* sfio can have large buffers - limit to 512 */
2339 warn("Test on unopened file <%s>",
2340 GvENAME(cGVOP->op_gv));
2341 SETERRNO(EBADF,RMS$_IFI);
2350 sv_setpv(statname, SvPV(sv, na));
2352 i = open(SvPV(sv, na), O_RDONLY, 0);
2354 i = open(SvPV(sv, na), 0);
2357 if (dowarn && strchr(SvPV(sv, na), '\n'))
2358 warn(warn_nl, "open");
2361 laststatval = Fstat(i, &statcache);
2362 if (laststatval < 0)
2364 len = read(i, tbuf, 512);
2367 if (S_ISDIR(statcache.st_mode) && op->op_type == OP_FTTEXT)
2368 RETPUSHNO; /* special case NFS directories */
2369 RETPUSHYES; /* null file is anything */
2374 /* now scan s to look for textiness */
2375 /* XXX ASCII dependent code */
2377 for (i = 0; i < len; i++, s++) {
2378 if (!*s) { /* null never allowed in text */
2385 *s != '\n' && *s != '\r' && *s != '\b' &&
2386 *s != '\t' && *s != '\f' && *s != 27)
2390 if ((odd * 3 > len) == (op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
2398 return pp_fttext(ARGS);
2413 if (!tmps || !*tmps) {
2414 svp = hv_fetch(GvHVn(envgv), "HOME", 4, FALSE);
2416 tmps = SvPV(*svp, na);
2418 if (!tmps || !*tmps) {
2419 svp = hv_fetch(GvHVn(envgv), "LOGDIR", 6, FALSE);
2421 tmps = SvPV(*svp, na);
2423 TAINT_PROPER("chdir");
2424 PUSHi( chdir(tmps) >= 0 );
2426 /* Clear the DEFAULT element of ENV so we'll get the new value
2428 hv_delete(GvHVn(envgv),"DEFAULT",7,G_DISCARD);
2435 dSP; dMARK; dTARGET;
2438 value = (I32)apply(op->op_type, MARK, SP);
2443 DIE(no_func, "Unsupported function chown");
2453 TAINT_PROPER("chroot");
2454 PUSHi( chroot(tmps) >= 0 );
2457 DIE(no_func, "chroot");
2463 dSP; dMARK; dTARGET;
2465 value = (I32)apply(op->op_type, MARK, SP);
2473 dSP; dMARK; dTARGET;
2475 value = (I32)apply(op->op_type, MARK, SP);
2483 dSP; dMARK; dTARGET;
2485 value = (I32)apply(op->op_type, MARK, SP);
2497 char *tmps = SvPV(TOPs, na);
2498 TAINT_PROPER("rename");
2500 anum = rename(tmps, tmps2);
2502 if (!(anum = Stat(tmps, &statbuf))) {
2503 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
2506 if (euid || Stat(tmps2, &statbuf) < 0 || !S_ISDIR(statbuf.st_mode))
2507 (void)UNLINK(tmps2);
2508 if (!(anum = link(tmps, tmps2)))
2509 anum = UNLINK(tmps);
2522 char *tmps = SvPV(TOPs, na);
2523 TAINT_PROPER("link");
2524 SETi( link(tmps, tmps2) >= 0 );
2526 DIE(no_func, "Unsupported function link");
2536 char *tmps = SvPV(TOPs, na);
2537 TAINT_PROPER("symlink");
2538 SETi( symlink(tmps, tmps2) >= 0 );
2541 DIE(no_func, "symlink");
2552 len = readlink(tmps, buf, sizeof buf);
2560 RETSETUNDEF; /* just pretend it's a normal file */
2564 #if !defined(HAS_MKDIR) || !defined(HAS_RMDIR)
2566 dooneliner(cmd, filename)
2572 *save_filename = filename;
2578 for (s = mybuf+strlen(mybuf); *filename; ) {
2583 myfp = my_popen(mybuf, "r");
2586 /* Need to save/restore 'rs' ?? */
2587 s = sv_gets(tmpsv, myfp, 0);
2588 (void)my_pclose(myfp);
2590 for (errno = 1; errno < sys_nerr; errno++) {
2591 #ifdef HAS_SYS_ERRLIST
2592 if (instr(mybuf, sys_errlist[errno])) /* you don't see this */
2595 char *errmsg; /* especially if it isn't there */
2598 (errmsg = strerror(errno)) ? errmsg : "NoErRoR"))
2604 #define EACCES EPERM
2606 if (instr(mybuf, "cannot make"))
2607 SETERRNO(EEXIST,RMS$_FEX);
2608 else if (instr(mybuf, "existing file"))
2609 SETERRNO(EEXIST,RMS$_FEX);
2610 else if (instr(mybuf, "ile exists"))
2611 SETERRNO(EEXIST,RMS$_FEX);
2612 else if (instr(mybuf, "non-exist"))
2613 SETERRNO(ENOENT,RMS$_FNF);
2614 else if (instr(mybuf, "does not exist"))
2615 SETERRNO(ENOENT,RMS$_FNF);
2616 else if (instr(mybuf, "not empty"))
2617 SETERRNO(EBUSY,SS$_DEVOFFLINE);
2618 else if (instr(mybuf, "cannot access"))
2619 SETERRNO(EACCES,RMS$_PRV);
2621 SETERRNO(EPERM,RMS$_PRV);
2624 else { /* some mkdirs return no failure indication */
2625 anum = (Stat(save_filename, &statbuf) >= 0);
2626 if (op->op_type == OP_RMDIR)
2631 SETERRNO(EACCES,RMS$_PRV); /* a guess */
2647 char *tmps = SvPV(TOPs, na);
2649 TAINT_PROPER("mkdir");
2651 SETi( mkdir(tmps, mode) >= 0 );
2653 SETi( dooneliner("mkdir", tmps) );
2654 oldumask = umask(0);
2656 chmod(tmps, (mode & ~oldumask) & 0777);
2667 TAINT_PROPER("rmdir");
2669 XPUSHi( rmdir(tmps) >= 0 );
2671 XPUSHi( dooneliner("rmdir", tmps) );
2676 /* Directory calls. */
2681 #if defined(Direntry_t) && defined(HAS_READDIR)
2682 char *dirname = POPp;
2684 register IO *io = GvIOn(gv);
2690 closedir(IoDIRP(io));
2691 if (!(IoDIRP(io) = opendir(dirname)))
2697 SETERRNO(EBADF,RMS$_DIR);
2700 DIE(no_dir_func, "opendir");
2707 #if defined(Direntry_t) && defined(HAS_READDIR)
2709 Direntry_t *readdir _((DIR *));
2711 register Direntry_t *dp;
2713 register IO *io = GvIOn(gv);
2715 if (!io || !IoDIRP(io))
2718 if (GIMME == G_ARRAY) {
2720 while (dp = (Direntry_t *)readdir(IoDIRP(io))) {
2722 XPUSHs(sv_2mortal(newSVpv(dp->d_name, dp->d_namlen)));
2724 XPUSHs(sv_2mortal(newSVpv(dp->d_name, 0)));
2729 if (!(dp = (Direntry_t *)readdir(IoDIRP(io))))
2732 XPUSHs(sv_2mortal(newSVpv(dp->d_name, dp->d_namlen)));
2734 XPUSHs(sv_2mortal(newSVpv(dp->d_name, 0)));
2741 SETERRNO(EBADF,RMS$_ISI);
2742 if (GIMME == G_ARRAY)
2747 DIE(no_dir_func, "readdir");
2754 #if defined(HAS_TELLDIR) || defined(telldir)
2755 #if !defined(telldir) && !defined(HAS_TELLDIR_PROTOTYPE)
2756 long telldir _((DIR *));
2759 register IO *io = GvIOn(gv);
2761 if (!io || !IoDIRP(io))
2764 PUSHi( telldir(IoDIRP(io)) );
2768 SETERRNO(EBADF,RMS$_ISI);
2771 DIE(no_dir_func, "telldir");
2778 #if defined(HAS_SEEKDIR) || defined(seekdir)
2781 register IO *io = GvIOn(gv);
2783 if (!io || !IoDIRP(io))
2786 (void)seekdir(IoDIRP(io), along);
2791 SETERRNO(EBADF,RMS$_ISI);
2794 DIE(no_dir_func, "seekdir");
2801 #if defined(HAS_REWINDDIR) || defined(rewinddir)
2803 register IO *io = GvIOn(gv);
2805 if (!io || !IoDIRP(io))
2808 (void)rewinddir(IoDIRP(io));
2812 SETERRNO(EBADF,RMS$_ISI);
2815 DIE(no_dir_func, "rewinddir");
2822 #if defined(Direntry_t) && defined(HAS_READDIR)
2824 register IO *io = GvIOn(gv);
2826 if (!io || !IoDIRP(io))
2829 #ifdef VOID_CLOSEDIR
2830 closedir(IoDIRP(io));
2832 if (closedir(IoDIRP(io)) < 0) {
2833 IoDIRP(io) = 0; /* Don't try to close again--coredumps on SysV */
2842 SETERRNO(EBADF,RMS$_IFI);
2845 DIE(no_dir_func, "closedir");
2849 /* Process control. */
2864 if (tmpgv = gv_fetchpv("$", TRUE, SVt_PV))
2865 sv_setiv(GvSV(tmpgv), (I32)getpid());
2866 hv_clear(pidstatus); /* no kids, so don't wait for 'em */
2871 DIE(no_func, "Unsupported function fork");
2877 #if !defined(DOSISH) || defined(OS2)
2882 childpid = wait4pid(-1, &argflags, 0);
2883 statusvalue = (childpid > 0) ? FIXSTATUS(argflags) : -1;
2887 DIE(no_func, "Unsupported function wait");
2893 #if !defined(DOSISH) || defined(OS2)
2901 childpid = wait4pid(childpid, &argflags, optype);
2902 statusvalue = (childpid > 0) ? FIXSTATUS(argflags) : -1;
2906 DIE(no_func, "Unsupported function wait");
2912 dSP; dMARK; dORIGMARK; dTARGET;
2917 Sigsave_t ihand,qhand; /* place to save signals during system() */
2919 #if (defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(OS2)
2920 if (SP - MARK == 1) {
2922 char *junk = SvPV(TOPs, na);
2924 TAINT_PROPER("system");
2927 while ((childpid = vfork()) == -1) {
2928 if (errno != EAGAIN) {
2937 rsignal_save(SIGINT, SIG_IGN, &ihand);
2938 rsignal_save(SIGQUIT, SIG_IGN, &qhand);
2940 result = wait4pid(childpid, &status, 0);
2941 } while (result == -1 && errno == EINTR);
2942 (void)rsignal_restore(SIGINT, &ihand);
2943 (void)rsignal_restore(SIGQUIT, &qhand);
2944 statusvalue = FIXSTATUS(status);
2948 value = (I32)((unsigned int)status & 0xffff);
2950 do_execfree(); /* free any memory child malloced on vfork */
2955 if (op->op_flags & OPf_STACKED) {
2956 SV *really = *++MARK;
2957 value = (I32)do_aexec(really, MARK, SP);
2959 else if (SP - MARK != 1)
2960 value = (I32)do_aexec(Nullsv, MARK, SP);
2962 value = (I32)do_exec(SvPVx(sv_mortalcopy(*SP), na));
2965 #else /* ! FORK or VMS or OS/2 */
2966 if (op->op_flags & OPf_STACKED) {
2967 SV *really = *++MARK;
2968 value = (I32)do_aspawn(really, MARK, SP);
2970 else if (SP - MARK != 1)
2971 value = (I32)do_aspawn(Nullsv, MARK, SP);
2973 value = (I32)do_spawn(SvPVx(sv_mortalcopy(*SP), na));
2975 statusvalue = FIXSTATUS(value);
2979 #endif /* !FORK or VMS */
2985 dSP; dMARK; dORIGMARK; dTARGET;
2988 if (op->op_flags & OPf_STACKED) {
2989 SV *really = *++MARK;
2990 value = (I32)do_aexec(really, MARK, SP);
2992 else if (SP - MARK != 1)
2994 value = (I32)vms_do_aexec(Nullsv, MARK, SP);
2996 value = (I32)do_aexec(Nullsv, MARK, SP);
3000 char *junk = SvPV(*SP, na);
3002 TAINT_PROPER("exec");
3005 value = (I32)vms_do_exec(SvPVx(sv_mortalcopy(*SP), na));
3007 value = (I32)do_exec(SvPVx(sv_mortalcopy(*SP), na));
3017 dSP; dMARK; dTARGET;
3020 value = (I32)apply(op->op_type, MARK, SP);
3025 DIE(no_func, "Unsupported function kill");
3033 XPUSHi( getppid() );
3036 DIE(no_func, "getppid");
3052 value = (I32)BSD_GETPGRP(pid);
3055 DIE("POSIX getpgrp can't take an argument");
3056 value = (I32)getpgrp();
3061 DIE(no_func, "getpgrp()");
3080 TAINT_PROPER("setpgrp");
3082 SETi( BSD_SETPGRP(pid, pgrp) >= 0 );
3084 if ((pgrp != 0) || (pid != 0)) {
3085 DIE("POSIX setpgrp can't take an argument");
3087 SETi( setpgrp() >= 0 );
3088 #endif /* USE_BSDPGRP */
3091 DIE(no_func, "setpgrp()");
3100 #ifdef HAS_GETPRIORITY
3103 SETi( getpriority(which, who) );
3106 DIE(no_func, "getpriority()");
3116 #ifdef HAS_SETPRIORITY
3120 TAINT_PROPER("setpriority");
3121 SETi( setpriority(which, who, niceval) >= 0 );
3124 DIE(no_func, "setpriority()");
3134 XPUSHn( time(Null(Time_t*)) );
3136 XPUSHi( time(Null(Time_t*)) );
3141 /* XXX The POSIX name is CLK_TCK; it is to be preferred
3142 to HZ. Probably. For now, assume that if the system
3143 defines HZ, it does so correctly. (Will this break
3145 Probably we ought to use _sysconf(_SC_CLK_TCK), if
3146 it's supported. --AD 9/96.
3162 DIE("times not implemented");
3167 (void)times(×buf);
3169 (void)times((tbuffer_t *)×buf); /* time.h uses different name for */
3170 /* struct tms, though same data */
3174 PUSHs(sv_2mortal(newSVnv(((double)timesbuf.tms_utime)/HZ)));
3175 if (GIMME == G_ARRAY) {
3176 PUSHs(sv_2mortal(newSVnv(((double)timesbuf.tms_stime)/HZ)));
3177 PUSHs(sv_2mortal(newSVnv(((double)timesbuf.tms_cutime)/HZ)));
3178 PUSHs(sv_2mortal(newSVnv(((double)timesbuf.tms_cstime)/HZ)));
3181 #endif /* HAS_TIMES */
3186 return pp_gmtime(ARGS);
3194 static char *dayname[] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
3195 static char *monname[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
3196 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
3202 when = (Time_t)SvNVx(POPs);
3204 when = (Time_t)SvIVx(POPs);
3207 if (op->op_type == OP_LOCALTIME)
3208 tmbuf = localtime(&when);
3210 tmbuf = gmtime(&when);
3214 if (GIMME != G_ARRAY) {
3219 sprintf(mybuf, "%s %s %2d %02d:%02d:%02d %d",
3220 dayname[tmbuf->tm_wday],
3221 monname[tmbuf->tm_mon],
3226 tmbuf->tm_year + 1900);
3227 PUSHp(mybuf, strlen(mybuf));
3230 PUSHs(sv_2mortal(newSViv((I32)tmbuf->tm_sec)));
3231 PUSHs(sv_2mortal(newSViv((I32)tmbuf->tm_min)));
3232 PUSHs(sv_2mortal(newSViv((I32)tmbuf->tm_hour)));
3233 PUSHs(sv_2mortal(newSViv((I32)tmbuf->tm_mday)));
3234 PUSHs(sv_2mortal(newSViv((I32)tmbuf->tm_mon)));
3235 PUSHs(sv_2mortal(newSViv((I32)tmbuf->tm_year)));
3236 PUSHs(sv_2mortal(newSViv((I32)tmbuf->tm_wday)));
3237 PUSHs(sv_2mortal(newSViv((I32)tmbuf->tm_yday)));
3238 PUSHs(sv_2mortal(newSViv((I32)tmbuf->tm_isdst)));
3249 anum = alarm((unsigned int)anum);
3256 DIE(no_func, "Unsupported function alarm");
3267 (void)time(&lasttime);
3272 sleep((unsigned int)duration);
3275 XPUSHi(when - lasttime);
3279 /* Shared memory. */
3283 return pp_semget(ARGS);
3288 return pp_semctl(ARGS);
3293 return pp_shmwrite(ARGS);
3298 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
3299 dSP; dMARK; dTARGET;
3300 I32 value = (I32)(do_shmio(op->op_type, MARK, SP) >= 0);
3305 return pp_semget(ARGS);
3309 /* Message passing. */
3313 return pp_semget(ARGS);
3318 return pp_semctl(ARGS);
3323 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
3324 dSP; dMARK; dTARGET;
3325 I32 value = (I32)(do_msgsnd(MARK, SP) >= 0);
3330 return pp_semget(ARGS);
3336 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
3337 dSP; dMARK; dTARGET;
3338 I32 value = (I32)(do_msgrcv(MARK, SP) >= 0);
3343 return pp_semget(ARGS);
3351 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
3352 dSP; dMARK; dTARGET;
3353 int anum = do_ipcget(op->op_type, MARK, SP);
3360 DIE("System V IPC is not implemented on this machine");
3366 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
3367 dSP; dMARK; dTARGET;
3368 int anum = do_ipcctl(op->op_type, MARK, SP);
3376 PUSHp("0 but true",10);
3380 return pp_semget(ARGS);
3386 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
3387 dSP; dMARK; dTARGET;
3388 I32 value = (I32)(do_semop(MARK, SP) >= 0);
3393 return pp_semget(ARGS);
3397 /* Get system info. */
3402 return pp_ghostent(ARGS);
3404 DIE(no_sock_func, "gethostbyname");
3411 return pp_ghostent(ARGS);
3413 DIE(no_sock_func, "gethostbyaddr");
3421 I32 which = op->op_type;
3422 register char **elem;
3424 struct hostent *gethostbyname();
3425 struct hostent *gethostbyaddr();
3426 #ifdef HAS_GETHOSTENT
3427 struct hostent *gethostent();
3429 struct hostent *hent;
3433 if (which == OP_GHBYNAME) {
3434 hent = gethostbyname(POPp);
3436 else if (which == OP_GHBYADDR) {
3437 int addrtype = POPi;
3440 char *addr = SvPV(addrsv, addrlen);
3442 hent = gethostbyaddr(addr, addrlen, addrtype);
3445 #ifdef HAS_GETHOSTENT
3446 hent = gethostent();
3448 DIE("gethostent not implemented");
3451 #ifdef HOST_NOT_FOUND
3453 statusvalue = FIXSTATUS(h_errno);
3456 if (GIMME != G_ARRAY) {
3457 PUSHs(sv = sv_newmortal());
3459 if (which == OP_GHBYNAME) {
3461 sv_setpvn(sv, hent->h_addr, hent->h_length);
3464 sv_setpv(sv, (char*)hent->h_name);
3470 PUSHs(sv = sv_mortalcopy(&sv_no));
3471 sv_setpv(sv, (char*)hent->h_name);
3472 PUSHs(sv = sv_mortalcopy(&sv_no));
3473 for (elem = hent->h_aliases; elem && *elem; elem++) {
3474 sv_catpv(sv, *elem);
3476 sv_catpvn(sv, " ", 1);
3478 PUSHs(sv = sv_mortalcopy(&sv_no));
3479 sv_setiv(sv, (I32)hent->h_addrtype);
3480 PUSHs(sv = sv_mortalcopy(&sv_no));
3481 len = hent->h_length;
3482 sv_setiv(sv, (I32)len);
3484 for (elem = hent->h_addr_list; elem && *elem; elem++) {
3485 XPUSHs(sv = sv_mortalcopy(&sv_no));
3486 sv_setpvn(sv, *elem, len);
3489 PUSHs(sv = sv_mortalcopy(&sv_no));
3491 sv_setpvn(sv, hent->h_addr, len);
3496 DIE(no_sock_func, "gethostent");
3503 return pp_gnetent(ARGS);
3505 DIE(no_sock_func, "getnetbyname");
3512 return pp_gnetent(ARGS);
3514 DIE(no_sock_func, "getnetbyaddr");
3522 I32 which = op->op_type;
3523 register char **elem;
3525 struct netent *getnetbyname();
3526 struct netent *getnetbyaddr();
3527 struct netent *getnetent();
3528 struct netent *nent;
3530 if (which == OP_GNBYNAME)
3531 nent = getnetbyname(POPp);
3532 else if (which == OP_GNBYADDR) {
3533 int addrtype = POPi;
3534 unsigned long addr = U_L(POPn);
3535 nent = getnetbyaddr((long)addr, addrtype);
3541 if (GIMME != G_ARRAY) {
3542 PUSHs(sv = sv_newmortal());
3544 if (which == OP_GNBYNAME)
3545 sv_setiv(sv, (I32)nent->n_net);
3547 sv_setpv(sv, nent->n_name);
3553 PUSHs(sv = sv_mortalcopy(&sv_no));
3554 sv_setpv(sv, nent->n_name);
3555 PUSHs(sv = sv_mortalcopy(&sv_no));
3556 for (elem = nent->n_aliases; *elem; elem++) {
3557 sv_catpv(sv, *elem);
3559 sv_catpvn(sv, " ", 1);
3561 PUSHs(sv = sv_mortalcopy(&sv_no));
3562 sv_setiv(sv, (I32)nent->n_addrtype);
3563 PUSHs(sv = sv_mortalcopy(&sv_no));
3564 sv_setiv(sv, (I32)nent->n_net);
3569 DIE(no_sock_func, "getnetent");
3576 return pp_gprotoent(ARGS);
3578 DIE(no_sock_func, "getprotobyname");
3585 return pp_gprotoent(ARGS);
3587 DIE(no_sock_func, "getprotobynumber");
3595 I32 which = op->op_type;
3596 register char **elem;
3598 struct protoent *getprotobyname();
3599 struct protoent *getprotobynumber();
3600 struct protoent *getprotoent();
3601 struct protoent *pent;
3603 if (which == OP_GPBYNAME)
3604 pent = getprotobyname(POPp);
3605 else if (which == OP_GPBYNUMBER)
3606 pent = getprotobynumber(POPi);
3608 pent = getprotoent();
3611 if (GIMME != G_ARRAY) {
3612 PUSHs(sv = sv_newmortal());
3614 if (which == OP_GPBYNAME)
3615 sv_setiv(sv, (I32)pent->p_proto);
3617 sv_setpv(sv, pent->p_name);
3623 PUSHs(sv = sv_mortalcopy(&sv_no));
3624 sv_setpv(sv, pent->p_name);
3625 PUSHs(sv = sv_mortalcopy(&sv_no));
3626 for (elem = pent->p_aliases; *elem; elem++) {
3627 sv_catpv(sv, *elem);
3629 sv_catpvn(sv, " ", 1);
3631 PUSHs(sv = sv_mortalcopy(&sv_no));
3632 sv_setiv(sv, (I32)pent->p_proto);
3637 DIE(no_sock_func, "getprotoent");
3644 return pp_gservent(ARGS);
3646 DIE(no_sock_func, "getservbyname");
3653 return pp_gservent(ARGS);
3655 DIE(no_sock_func, "getservbyport");
3663 I32 which = op->op_type;
3664 register char **elem;
3666 struct servent *getservbyname();
3667 struct servent *getservbynumber();
3668 struct servent *getservent();
3669 struct servent *sent;
3671 if (which == OP_GSBYNAME) {
3675 if (proto && !*proto)
3678 sent = getservbyname(name, proto);
3680 else if (which == OP_GSBYPORT) {
3682 unsigned short port = POPu;
3687 sent = getservbyport(port, proto);
3690 sent = getservent();
3693 if (GIMME != G_ARRAY) {
3694 PUSHs(sv = sv_newmortal());
3696 if (which == OP_GSBYNAME) {
3698 sv_setiv(sv, (I32)ntohs(sent->s_port));
3700 sv_setiv(sv, (I32)(sent->s_port));
3704 sv_setpv(sv, sent->s_name);
3710 PUSHs(sv = sv_mortalcopy(&sv_no));
3711 sv_setpv(sv, sent->s_name);
3712 PUSHs(sv = sv_mortalcopy(&sv_no));
3713 for (elem = sent->s_aliases; *elem; elem++) {
3714 sv_catpv(sv, *elem);
3716 sv_catpvn(sv, " ", 1);
3718 PUSHs(sv = sv_mortalcopy(&sv_no));
3720 sv_setiv(sv, (I32)ntohs(sent->s_port));
3722 sv_setiv(sv, (I32)(sent->s_port));
3724 PUSHs(sv = sv_mortalcopy(&sv_no));
3725 sv_setpv(sv, sent->s_proto);
3730 DIE(no_sock_func, "getservent");
3741 DIE(no_sock_func, "sethostent");
3752 DIE(no_sock_func, "setnetent");
3763 DIE(no_sock_func, "setprotoent");
3774 DIE(no_sock_func, "setservent");
3786 DIE(no_sock_func, "endhostent");
3798 DIE(no_sock_func, "endnetent");
3810 DIE(no_sock_func, "endprotoent");
3822 DIE(no_sock_func, "endservent");
3829 return pp_gpwent(ARGS);
3831 DIE(no_func, "getpwnam");
3838 return pp_gpwent(ARGS);
3840 DIE(no_func, "getpwuid");
3848 I32 which = op->op_type;
3850 struct passwd *pwent;
3852 if (which == OP_GPWNAM)
3853 pwent = getpwnam(POPp);
3854 else if (which == OP_GPWUID)
3855 pwent = getpwuid(POPi);
3857 pwent = (struct passwd *)getpwent();
3860 if (GIMME != G_ARRAY) {
3861 PUSHs(sv = sv_newmortal());
3863 if (which == OP_GPWNAM)
3864 sv_setiv(sv, (I32)pwent->pw_uid);
3866 sv_setpv(sv, pwent->pw_name);
3872 PUSHs(sv = sv_mortalcopy(&sv_no));
3873 sv_setpv(sv, pwent->pw_name);
3874 PUSHs(sv = sv_mortalcopy(&sv_no));
3875 sv_setpv(sv, pwent->pw_passwd);
3876 PUSHs(sv = sv_mortalcopy(&sv_no));
3877 sv_setiv(sv, (I32)pwent->pw_uid);
3878 PUSHs(sv = sv_mortalcopy(&sv_no));
3879 sv_setiv(sv, (I32)pwent->pw_gid);
3880 PUSHs(sv = sv_mortalcopy(&sv_no));
3882 sv_setiv(sv, (I32)pwent->pw_change);
3885 sv_setiv(sv, (I32)pwent->pw_quota);
3888 sv_setpv(sv, pwent->pw_age);
3892 PUSHs(sv = sv_mortalcopy(&sv_no));
3894 sv_setpv(sv, pwent->pw_class);
3897 sv_setpv(sv, pwent->pw_comment);
3900 PUSHs(sv = sv_mortalcopy(&sv_no));
3901 sv_setpv(sv, pwent->pw_gecos);
3902 PUSHs(sv = sv_mortalcopy(&sv_no));
3903 sv_setpv(sv, pwent->pw_dir);
3904 PUSHs(sv = sv_mortalcopy(&sv_no));
3905 sv_setpv(sv, pwent->pw_shell);
3907 PUSHs(sv = sv_mortalcopy(&sv_no));
3908 sv_setiv(sv, (I32)pwent->pw_expire);
3913 DIE(no_func, "getpwent");
3924 DIE(no_func, "setpwent");
3935 DIE(no_func, "endpwent");
3942 return pp_ggrent(ARGS);
3944 DIE(no_func, "getgrnam");
3951 return pp_ggrent(ARGS);
3953 DIE(no_func, "getgrgid");
3961 I32 which = op->op_type;
3962 register char **elem;
3964 struct group *grent;
3966 if (which == OP_GGRNAM)
3967 grent = (struct group *)getgrnam(POPp);
3968 else if (which == OP_GGRGID)
3969 grent = (struct group *)getgrgid(POPi);
3971 grent = (struct group *)getgrent();
3974 if (GIMME != G_ARRAY) {
3975 PUSHs(sv = sv_newmortal());
3977 if (which == OP_GGRNAM)
3978 sv_setiv(sv, (I32)grent->gr_gid);
3980 sv_setpv(sv, grent->gr_name);
3986 PUSHs(sv = sv_mortalcopy(&sv_no));
3987 sv_setpv(sv, grent->gr_name);
3988 PUSHs(sv = sv_mortalcopy(&sv_no));
3989 sv_setpv(sv, grent->gr_passwd);
3990 PUSHs(sv = sv_mortalcopy(&sv_no));
3991 sv_setiv(sv, (I32)grent->gr_gid);
3992 PUSHs(sv = sv_mortalcopy(&sv_no));
3993 for (elem = grent->gr_mem; *elem; elem++) {
3994 sv_catpv(sv, *elem);
3996 sv_catpvn(sv, " ", 1);
4002 DIE(no_func, "getgrent");
4013 DIE(no_func, "setgrent");
4024 DIE(no_func, "endgrent");
4034 if (!(tmps = getlogin()))
4036 PUSHp(tmps, strlen(tmps));
4039 DIE(no_func, "getlogin");
4043 /* Miscellaneous. */
4048 dSP; dMARK; dORIGMARK; dTARGET;
4049 register I32 items = SP - MARK;
4050 unsigned long a[20];
4056 while (++MARK <= SP) {
4057 if (SvTAINTED(*MARK)) {
4063 TAINT_PROPER("syscall");
4066 /* This probably won't work on machines where sizeof(long) != sizeof(int)
4067 * or where sizeof(long) != sizeof(char*). But such machines will
4068 * not likely have syscall implemented either, so who cares?
4070 while (++MARK <= SP) {
4071 if (SvNIOK(*MARK) || !i)
4072 a[i++] = SvIV(*MARK);
4073 else if (*MARK == &sv_undef)
4076 a[i++] = (unsigned long)SvPV_force(*MARK, na);
4082 DIE("Too many args to syscall");
4084 DIE("Too few args to syscall");
4086 retval = syscall(a[0]);
4089 retval = syscall(a[0],a[1]);
4092 retval = syscall(a[0],a[1],a[2]);
4095 retval = syscall(a[0],a[1],a[2],a[3]);
4098 retval = syscall(a[0],a[1],a[2],a[3],a[4]);
4101 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5]);
4104 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6]);
4107 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7]);
4111 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8]);
4114 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9]);
4117 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
4121 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
4125 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
4129 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
4130 a[10],a[11],a[12],a[13]);
4132 #endif /* atarist */
4138 DIE(no_func, "syscall");
4142 #ifdef FCNTL_EMULATE_FLOCK
4144 /* XXX Emulate flock() with fcntl().
4145 What's really needed is a good file locking module.
4149 fcntl_emulate_flock(fd, operation)
4155 switch (operation & ~LOCK_NB) {
4157 flock.l_type = F_RDLCK;
4160 flock.l_type = F_WRLCK;
4163 flock.l_type = F_UNLCK;
4169 flock.l_whence = SEEK_SET;
4170 flock.l_start = flock.l_len = 0L;
4172 return fcntl(fd, (operation & LOCK_NB) ? F_SETLK : F_SETLKW, &flock);
4175 #endif /* FCNTL_EMULATE_FLOCK */
4177 #ifdef LOCKF_EMULATE_FLOCK
4179 /* XXX Emulate flock() with lockf(). This is just to increase
4180 portability of scripts. The calls are not completely
4181 interchangeable. What's really needed is a good file
4185 /* The lockf() constants might have been defined in <unistd.h>.
4186 Unfortunately, <unistd.h> causes troubles on some mixed
4187 (BSD/POSIX) systems, such as SunOS 4.1.3.
4189 Further, the lockf() constants aren't POSIX, so they might not be
4190 visible if we're compiling with _POSIX_SOURCE defined. Thus, we'll
4191 just stick in the SVID values and be done with it. Sigh.
4195 # define F_ULOCK 0 /* Unlock a previously locked region */
4198 # define F_LOCK 1 /* Lock a region for exclusive use */
4201 # define F_TLOCK 2 /* Test and lock a region for exclusive use */
4204 # define F_TEST 3 /* Test a region for other processes locks */
4208 lockf_emulate_flock (fd, operation)
4213 switch (operation) {
4215 /* LOCK_SH - get a shared lock */
4217 /* LOCK_EX - get an exclusive lock */
4219 i = lockf (fd, F_LOCK, 0);
4222 /* LOCK_SH|LOCK_NB - get a non-blocking shared lock */
4223 case LOCK_SH|LOCK_NB:
4224 /* LOCK_EX|LOCK_NB - get a non-blocking exclusive lock */
4225 case LOCK_EX|LOCK_NB:
4226 i = lockf (fd, F_TLOCK, 0);
4228 if ((errno == EAGAIN) || (errno == EACCES))
4229 errno = EWOULDBLOCK;
4232 /* LOCK_UN - unlock (non-blocking is a no-op) */
4234 case LOCK_UN|LOCK_NB:
4235 i = lockf (fd, F_ULOCK, 0);
4238 /* Default - can't decipher operation */
4247 #endif /* LOCKF_EMULATE_FLOCK */