3 * Copyright (c) 1991-1997, Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * 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. */
27 extern "C" int syscall(unsigned long,...);
32 # include <sys/wait.h>
36 # include <sys/resource.h>
39 #if defined(HAS_SOCKET) && !defined(VMS) /* VMS handles sockets via vmsish.h */
40 # include <sys/socket.h>
46 # include <net/errno.h>
53 #include <sys/select.h>
57 /* XXX Configure test needed.
58 h_errno might not be a simple 'int', especially for multi-threaded
59 applications, see "extern int errno in perl.h". Creating such
60 a test requires taking into account the differences between
61 compiling multithreaded and singlethreaded ($ccflags et al).
62 HOST_NOT_FOUND is typically defined in <netdb.h>.
64 #if defined(HOST_NOT_FOUND) && !defined(h_errno)
72 struct passwd *getpwnam _((char *));
73 struct passwd *getpwuid _((Uid_t));
76 struct passwd *getpwent _((void));
84 struct group *getgrnam _((char *));
85 struct group *getgrgid _((Gid_t));
88 struct group *getgrent _((void));
93 # if defined(_MSC_VER) || defined(__MINGW32__)
94 # include <sys/utime.h>
103 #include <sys/file.h>
106 /* Put this after #includes because fork and vfork prototypes may conflict. */
111 /* Put this after #includes because <unistd.h> defines _XOPEN_*. */
113 # if _XOPEN_VERSION >= 5 || defined(_XOPEN_SOURCE_EXTENDED) || defined(__GLIBC__)
114 # define Sock_size_t Size_t
116 # define Sock_size_t int
120 #if !defined(HAS_MKDIR) || !defined(HAS_RMDIR)
121 static int dooneliner _((char *cmd, char *filename));
125 # ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
128 # define my_chsize PerlLIO_chsize
133 #else /* no flock() */
135 /* fcntl.h might not have been included, even if it exists, because
136 the current Configure only sets I_FCNTL if it's needed to pick up
137 the *_OK constants. Make sure it has been included before testing
138 the fcntl() locking constants. */
139 # if defined(HAS_FCNTL) && !defined(I_FCNTL)
143 # if defined(HAS_FCNTL) && defined(F_SETLK) && defined (F_SETLKW)
144 # define FLOCK fcntl_emulate_flock
145 # define FCNTL_EMULATE_FLOCK
146 # else /* no flock() or fcntl(F_SETLK,...) */
148 # define FLOCK lockf_emulate_flock
149 # define LOCKF_EMULATE_FLOCK
151 # endif /* no flock() or fcntl(F_SETLK,...) */
154 static int FLOCK _((int, int));
157 * These are the flock() constants. Since this sytems doesn't have
158 * flock(), the values of the constants are probably not available.
172 # endif /* emulating flock() */
174 #endif /* no flock() */
178 # define MAXPATHLEN PATH_MAX
180 # define MAXPATHLEN 1024
185 static char zero_but_true[ZBTLEN + 1] = "0 but true";
187 #if defined(I_SYS_ACCESS) && !defined(R_OK)
188 # include <sys/access.h>
191 #undef PERL_EFF_ACCESS_R_OK /* EFFective uid/gid ACCESS R_OK */
192 #undef PERL_EFF_ACCESS_W_OK
193 #undef PERL_EFF_ACCESS_X_OK
195 /* F_OK unused: if stat() cannot find it... */
197 #if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
198 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
199 # define PERL_EFF_ACCESS_R_OK(p) (access((p), R_OK | EFF_ONLY_OK))
200 # define PERL_EFF_ACCESS_W_OK(p) (access((p), W_OK | EFF_ONLY_OK))
201 # define PERL_EFF_ACCESS_X_OK(p) (access((p), X_OK | EFF_ONLY_OK))
204 #if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_EACCESS)
206 # if defined(I_SYS_SECURITY)
207 # include <sys/security.h>
209 # define PERL_EFF_ACCESS_R_OK(p) (eaccess((p), R_OK, ACC_SELF))
210 # define PERL_EFF_ACCESS_W_OK(p) (eaccess((p), W_OK, ACC_SELF))
211 # define PERL_EFF_ACCESS_X_OK(p) (eaccess((p), X_OK, ACC_SELF))
214 #if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESSX) && defined(ACC_SELF)
216 # define PERL_EFF_ACCESS_R_OK(p) (accessx((p), R_OK, ACC_SELF))
217 # define PERL_EFF_ACCESS_W_OK(p) (accessx((p), W_OK, ACC_SELF))
218 # define PERL_EFF_ACCESS_X_OK(p) (accessx((p), X_OK, ACC_SELF))
221 #if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESS) \
222 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
223 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
226 emulate_eaccess (const char* path, int mode) {
227 Uid_t ruid = getuid();
228 Uid_t euid = geteuid();
229 Gid_t rgid = getgid();
230 Gid_t egid = getegid();
233 MUTEX_LOCK(&PL_cred_mutex);
234 #if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
235 croak("switching effective uid is not implemented");
238 if (setreuid(euid, ruid))
241 if (setresuid(euid, ruid, (Uid_t)-1))
244 croak("entering effective uid failed");
247 #if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
248 croak("switching effective gid is not implemented");
251 if (setregid(egid, rgid))
254 if (setresgid(egid, rgid, (Gid_t)-1))
257 croak("entering effective gid failed");
260 res = access(path, mode);
263 if (setreuid(ruid, euid))
266 if (setresuid(ruid, euid, (Uid_t)-1))
269 croak("leaving effective uid failed");
272 if (setregid(rgid, egid))
275 if (setresgid(rgid, egid, (Gid_t)-1))
278 croak("leaving effective gid failed");
279 MUTEX_UNLOCK(&PL_cred_mutex);
283 # define PERL_EFF_ACCESS_R_OK(p) (emulate_eaccess((p), R_OK))
284 # define PERL_EFF_ACCESS_W_OK(p) (emulate_eaccess((p), W_OK))
285 # define PERL_EFF_ACCESS_X_OK(p) (emulate_eaccess((p), X_OK))
288 #if !defined(PERL_EFF_ACCESS_R_OK)
290 emulate_eaccess (const char* path, int mode) {
291 croak("switching effective uid is not implemented");
305 fp = PerlProc_popen(tmps, "r");
307 if (gimme == G_VOID) {
309 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
313 else if (gimme == G_SCALAR) {
314 sv_setpv(TARG, ""); /* note that this preserves previous buffer */
315 while (sv_gets(TARG, fp, SvCUR(TARG)) != Nullch)
326 if (sv_gets(sv, fp, 0) == Nullch) {
330 XPUSHs(sv_2mortal(sv));
331 if (SvLEN(sv) - SvCUR(sv) > 20) {
332 SvLEN_set(sv, SvCUR(sv)+1);
333 Renew(SvPVX(sv), SvLEN(sv), char);
338 STATUS_NATIVE_SET(PerlProc_pclose(fp));
339 TAINT; /* "I believe that this is not gratuitous!" */
342 STATUS_NATIVE_SET(-1);
343 if (gimme == G_SCALAR)
353 tryAMAGICunTARGET(iter, -1);
360 * The external globbing program may use things we can't control,
361 * so for security reasons we must assume the worst.
364 taint_proper(PL_no_security, "glob");
368 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
369 PL_last_in_gv = (GV*)*PL_stack_sp--;
371 SAVESPTR(PL_rs); /* This is not permanent, either. */
372 PL_rs = sv_2mortal(newSVpv("", 1));
375 *SvPVX(PL_rs) = '\n';
379 result = do_readline();
384 #if 0 /* XXX never used! */
387 PL_last_in_gv = gv_fetchpv(SvPVx(GvSV((GV*)(*PL_stack_sp--)), PL_na), TRUE,SVt_PVIO);
388 return do_readline();
394 PL_last_in_gv = cGVOP->op_gv;
395 return do_readline();
402 if (SP - MARK != 1) {
404 do_join(TARG, &PL_sv_no, MARK, SP);
405 tmps = SvPV(TARG, PL_na);
409 tmps = SvPV(TOPs, PL_na);
411 if (!tmps || !*tmps) {
413 (void)SvUPGRADE(error, SVt_PV);
414 if (SvPOK(error) && SvCUR(error))
415 sv_catpv(error, "\t...caught");
416 tmps = SvPV(error, PL_na);
419 tmps = "Warning: something's wrong";
430 if (SP - MARK != 1) {
432 do_join(TARG, &PL_sv_no, MARK, SP);
433 tmps = SvPV(TARG, PL_na);
438 tmps = SvROK(tmpsv) ? Nullch : SvPV(tmpsv, PL_na);
440 if (!tmps || !*tmps) {
442 (void)SvUPGRADE(error, SVt_PV);
443 if(tmpsv ? SvROK(tmpsv) : SvROK(error)) {
445 SvSetSV(error,tmpsv);
446 else if(sv_isobject(error)) {
447 HV *stash = SvSTASH(SvRV(error));
448 GV *gv = gv_fetchmethod(stash, "PROPAGATE");
450 SV *file = sv_2mortal(newSVsv(GvSV(PL_curcop->cop_filegv)));
451 SV *line = sv_2mortal(newSViv(PL_curcop->cop_line));
458 perl_call_sv((SV*)GvCV(gv),
459 G_SCALAR|G_EVAL|G_KEEPERR);
460 sv_setsv(error,*PL_stack_sp--);
466 if (SvPOK(error) && SvCUR(error))
467 sv_catpv(error, "\t...propagated");
468 tmps = SvPV(error, PL_na);
489 DIE(PL_no_usym, "filehandle");
494 DIE(PL_no_usym, "filehandle");
496 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
497 tmps = SvPV(sv, len);
498 if (do_open(gv, tmps, len, FALSE, O_RDONLY, 0, Nullfp))
499 PUSHi( (I32)PL_forkprocess );
500 else if (PL_forkprocess == 0) /* we are a new child */
518 if (mg = SvTIED_mg((SV*)gv, 'q')) {
520 XPUSHs(SvTIED_obj((SV*)gv, mg));
523 perl_call_method("CLOSE", G_SCALAR);
529 PUSHs(boolSV(do_close(gv, TRUE)));
549 if (SvTYPE(rgv) != SVt_PVGV || SvTYPE(wgv) != SVt_PVGV)
550 DIE(PL_no_usym, "filehandle");
555 do_close(rgv, FALSE);
557 do_close(wgv, FALSE);
559 if (PerlProc_pipe(fd) < 0)
562 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
563 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
564 IoIFP(wstio) = IoOFP(wstio);
568 if (!IoIFP(rstio) || !IoOFP(wstio)) {
569 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
570 else PerlLIO_close(fd[0]);
571 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
572 else PerlLIO_close(fd[1]);
575 #if defined(HAS_FCNTL) && defined(F_SETFD)
576 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
577 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
584 DIE(PL_no_func, "pipe");
597 if (!gv || !(io = GvIO(gv)) || !(fp = IoIFP(io)))
599 PUSHi(PerlIO_fileno(fp));
610 anum = PerlLIO_umask(0);
611 (void)PerlLIO_umask(anum);
614 anum = PerlLIO_umask(POPi);
615 TAINT_PROPER("umask");
618 /* Only DIE if trying to restrict permissions on `user' (self).
619 * Otherwise it's harmless and more useful to just return undef
620 * since 'group' and 'other' concepts probably don't exist here. */
621 if (MAXARG >= 1 && (POPi & 0700))
622 DIE("umask not implemented");
623 XPUSHs(&PL_sv_undef);
641 if (!(io = GvIO(gv)) || !(fp = IoIFP(io)))
644 if (do_binmode(fp,IoTYPE(io),TRUE))
659 I32 markoff = MARK - PL_stack_base;
665 switch(SvTYPE(varsv)) {
667 methname = "TIEHASH";
670 methname = "TIEARRAY";
673 methname = "TIEHANDLE";
677 methname = "TIESCALAR";
682 if (sv_isobject(*MARK)) {
684 PUSHSTACKi(PERLSI_MAGIC);
690 perl_call_method(methname, G_SCALAR);
693 /* Not clear why we don't call perl_call_method here too.
694 * perhaps to get different error message ?
696 stash = gv_stashsv(*MARK, FALSE);
697 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
698 DIE("Can't locate object method \"%s\" via package \"%s\"",
699 methname, SvPV(*MARK,PL_na));
702 PUSHSTACKi(PERLSI_MAGIC);
708 perl_call_sv((SV*)GvCV(gv), G_SCALAR);
714 if (sv_isobject(sv)) {
715 sv_unmagic(varsv, how);
716 sv_magic(varsv, (SvRV(sv) == varsv ? Nullsv : sv), how, Nullch, 0);
719 SP = PL_stack_base + markoff;
728 char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV) ? 'P' : 'q';
730 if (ckWARN(WARN_UNTIE)) {
732 if (mg = SvTIED_mg(sv, how)) {
733 if (mg && SvREFCNT(SvRV(mg->mg_obj)) > 1)
735 "untie attempted while %lu inner references still exist",
736 (unsigned long)SvREFCNT(SvRV(mg->mg_obj)) - 1 ) ;
748 char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV) ? 'P' : 'q';
751 if (mg = SvTIED_mg(sv, how)) {
752 SV *osv = SvTIED_obj(sv, mg);
753 if (osv == mg->mg_obj)
754 osv = sv_mortalcopy(osv);
772 sv = sv_mortalcopy(&PL_sv_no);
773 sv_setpv(sv, "AnyDBM_File");
774 stash = gv_stashsv(sv, FALSE);
775 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
777 perl_require_pv("AnyDBM_File.pm");
779 if (!(gv = gv_fetchmethod(stash, "TIEHASH")))
780 DIE("No dbm on this machine");
790 PUSHs(sv_2mortal(newSViv(O_RDWR|O_CREAT)));
792 PUSHs(sv_2mortal(newSViv(O_RDWR)));
795 perl_call_sv((SV*)GvCV(gv), G_SCALAR);
798 if (!sv_isobject(TOPs)) {
803 PUSHs(sv_2mortal(newSViv(O_RDONLY)));
806 perl_call_sv((SV*)GvCV(gv), G_SCALAR);
810 if (sv_isobject(TOPs)) {
811 sv_unmagic((SV *) hv, 'P');
812 sv_magic((SV*)hv, TOPs, 'P', Nullch, 0);
820 return pp_untie(ARGS);
834 struct timeval timebuf;
835 struct timeval *tbuf = &timebuf;
838 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
843 # if BYTEORDER & 0xf0000
844 # define ORDERBYTE (0x88888888 - BYTEORDER)
846 # define ORDERBYTE (0x4444 - BYTEORDER)
852 for (i = 1; i <= 3; i++) {
860 /* little endians can use vecs directly */
861 #if BYTEORDER == 0x1234 || BYTEORDER == 0x12345678
862 # if SELECT_MIN_BITS > 1
863 /* If SELECT_MIN_BITS is greater than one we most probably will want
864 * to align the sizes with SELECT_MIN_BITS/8 because for example
865 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
866 * UNIX, Solaris, NeXT) the smallest quantum select() operates on
867 * (sets bit) is 32 bits. */
868 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
870 growsize = sizeof(fd_set);
879 masksize = NFDBITS / NBBY;
881 masksize = sizeof(long); /* documented int, everyone seems to use long */
883 growsize = maxlen + (masksize - (maxlen % masksize));
884 Zero(&fd_sets[0], 4, char*);
892 timebuf.tv_sec = (long)value;
893 value -= (double)timebuf.tv_sec;
894 timebuf.tv_usec = (long)(value * 1000000.0);
897 tbuf = Null(struct timeval*);
899 for (i = 1; i <= 3; i++) {
906 SvPV_force(sv,PL_na); /* force string conversion */
909 Sv_Grow(sv, growsize);
913 while (++j <= growsize) {
917 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
919 New(403, fd_sets[i], growsize, char);
920 for (offset = 0; offset < growsize; offset += masksize) {
921 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
922 fd_sets[i][j+offset] = s[(k % masksize) + offset];
925 fd_sets[i] = SvPVX(sv);
929 nfound = PerlSock_select(
931 (Select_fd_set_t) fd_sets[1],
932 (Select_fd_set_t) fd_sets[2],
933 (Select_fd_set_t) fd_sets[3],
935 for (i = 1; i <= 3; i++) {
938 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
940 for (offset = 0; offset < growsize; offset += masksize) {
941 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
942 s[(k % masksize) + offset] = fd_sets[i][j+offset];
944 Safefree(fd_sets[i]);
951 if (GIMME == G_ARRAY && tbuf) {
952 value = (double)(timebuf.tv_sec) +
953 (double)(timebuf.tv_usec) / 1000000.0;
954 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
959 DIE("select not implemented");
968 (void)SvREFCNT_inc(gv);
970 SvREFCNT_dec(PL_defoutgv);
980 newdefout = (PL_op->op_private > 0) ? ((GV *) POPs) : (GV *) NULL;
982 egv = GvEGV(PL_defoutgv);
987 XPUSHs(&PL_sv_undef);
989 GV **gvp = (GV**)hv_fetch(hv, GvNAME(egv), GvNAMELEN(egv), FALSE);
990 if (gvp && *gvp == egv) {
991 gv_efullname3(TARG, PL_defoutgv, Nullch);
995 XPUSHs(sv_2mortal(newRV((SV*)egv)));
1000 if (!GvIO(newdefout))
1001 gv_IOadd(newdefout);
1002 setdefout(newdefout);
1021 if (mg = SvTIED_mg((SV*)gv, 'q')) {
1022 I32 gimme = GIMME_V;
1024 XPUSHs(SvTIED_obj((SV*)gv, mg));
1027 perl_call_method("GETC", gimme);
1030 if (gimme == G_SCALAR)
1031 SvSetMagicSV_nosteal(TARG, TOPs);
1034 if (!gv || do_eof(gv)) /* make sure we have fp with something */
1037 sv_setpv(TARG, " ");
1038 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
1045 return pp_sysread(ARGS);
1049 doform(CV *cv, GV *gv, OP *retop)
1052 register PERL_CONTEXT *cx;
1053 I32 gimme = GIMME_V;
1054 AV* padlist = CvPADLIST(cv);
1055 SV** svp = AvARRAY(padlist);
1061 PUSHBLOCK(cx, CXt_SUB, PL_stack_sp);
1063 SAVESPTR(PL_curpad);
1064 PL_curpad = AvARRAY((AV*)svp[1]);
1066 setdefout(gv); /* locally select filehandle so $% et al work */
1098 SV *tmpsv = sv_newmortal();
1099 gv_efullname3(tmpsv, fgv, Nullch);
1100 DIE("Undefined format \"%s\" called",SvPVX(tmpsv));
1102 DIE("Not a format reference");
1105 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
1107 IoFLAGS(io) &= ~IOf_DIDTOP;
1108 return doform(cv,gv,PL_op->op_next);
1114 GV *gv = cxstack[cxstack_ix].blk_sub.gv;
1115 register IO *io = GvIOp(gv);
1116 PerlIO *ofp = IoOFP(io);
1120 register PERL_CONTEXT *cx;
1122 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
1123 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
1124 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1125 PL_formtarget != PL_toptarget)
1129 if (!IoTOP_GV(io)) {
1133 if (!IoTOP_NAME(io)) {
1134 if (!IoFMT_NAME(io))
1135 IoFMT_NAME(io) = savepv(GvNAME(gv));
1136 topname = sv_2mortal(newSVpvf("%s_TOP", IoFMT_NAME(io)));
1137 topgv = gv_fetchpv(SvPVX(topname), FALSE, SVt_PVFM);
1138 if ((topgv && GvFORM(topgv)) ||
1139 !gv_fetchpv("top",FALSE,SVt_PVFM))
1140 IoTOP_NAME(io) = savepv(SvPVX(topname));
1142 IoTOP_NAME(io) = savepv("top");
1144 topgv = gv_fetchpv(IoTOP_NAME(io),FALSE, SVt_PVFM);
1145 if (!topgv || !GvFORM(topgv)) {
1146 IoLINES_LEFT(io) = 100000000;
1149 IoTOP_GV(io) = topgv;
1151 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1152 I32 lines = IoLINES_LEFT(io);
1153 char *s = SvPVX(PL_formtarget);
1154 if (lines <= 0) /* Yow, header didn't even fit!!! */
1156 while (lines-- > 0) {
1157 s = strchr(s, '\n');
1163 PerlIO_write(ofp, SvPVX(PL_formtarget), s - SvPVX(PL_formtarget));
1164 sv_chop(PL_formtarget, s);
1165 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
1168 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
1169 PerlIO_write(ofp, SvPVX(PL_formfeed), SvCUR(PL_formfeed));
1170 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1172 PL_formtarget = PL_toptarget;
1173 IoFLAGS(io) |= IOf_DIDTOP;
1176 DIE("bad top format reference");
1179 SV *tmpsv = sv_newmortal();
1180 gv_efullname3(tmpsv, fgv, Nullch);
1181 DIE("Undefined top format \"%s\" called",SvPVX(tmpsv));
1184 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
1185 return doform(cv,gv,PL_op);
1189 POPBLOCK(cx,PL_curpm);
1195 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
1197 warner(WARN_IO, "Filehandle only opened for input");
1198 else if (ckWARN(WARN_CLOSED))
1199 warner(WARN_CLOSED, "Write on closed filehandle");
1204 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
1205 if (ckWARN(WARN_IO))
1206 warner(WARN_IO, "page overflow");
1208 if (!PerlIO_write(ofp, SvPVX(PL_formtarget), SvCUR(PL_formtarget)) ||
1212 FmLINES(PL_formtarget) = 0;
1213 SvCUR_set(PL_formtarget, 0);
1214 *SvEND(PL_formtarget) = '\0';
1215 if (IoFLAGS(io) & IOf_FLUSH)
1216 (void)PerlIO_flush(fp);
1220 PL_formtarget = PL_bodytarget;
1222 return pop_return();
1227 djSP; dMARK; dORIGMARK;
1234 if (PL_op->op_flags & OPf_STACKED)
1239 if (mg = SvTIED_mg((SV*)gv, 'q')) {
1240 if (MARK == ORIGMARK) {
1243 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1247 *MARK = SvTIED_obj((SV*)gv, mg);
1250 perl_call_method("PRINTF", G_SCALAR);
1253 MARK = ORIGMARK + 1;
1260 if (!(io = GvIO(gv))) {
1261 if (ckWARN(WARN_UNOPENED)) {
1262 gv_fullname3(sv, gv, Nullch);
1263 warner(WARN_UNOPENED, "Filehandle %s never opened", SvPV(sv,PL_na));
1265 SETERRNO(EBADF,RMS$_IFI);
1268 else if (!(fp = IoOFP(io))) {
1269 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
1270 gv_fullname3(sv, gv, Nullch);
1272 warner(WARN_IO, "Filehandle %s opened only for input",
1274 else if (ckWARN(WARN_CLOSED))
1275 warner(WARN_CLOSED, "printf on closed filehandle %s",
1278 SETERRNO(EBADF,IoIFP(io)?RMS$_FAC:RMS$_IFI);
1282 #ifdef USE_LOCALE_NUMERIC
1283 if (PL_op->op_private & OPpLOCALE)
1284 SET_NUMERIC_LOCAL();
1286 SET_NUMERIC_STANDARD();
1288 do_sprintf(sv, SP - MARK, MARK + 1);
1289 if (!do_print(sv, fp))
1292 if (IoFLAGS(io) & IOf_FLUSH)
1293 if (PerlIO_flush(fp) == EOF)
1304 PUSHs(&PL_sv_undef);
1325 tmps = SvPV(sv, len);
1326 if (do_open(gv, tmps, len, TRUE, mode, perm, Nullfp)) {
1327 IoLINES(GvIOp(gv)) = 0;
1331 PUSHs(&PL_sv_undef);
1338 djSP; dMARK; dORIGMARK; dTARGET;
1344 Sock_size_t bufsize;
1350 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD) &&
1351 (mg = SvTIED_mg((SV*)gv, 'q')))
1356 *MARK = SvTIED_obj((SV*)gv, mg);
1358 perl_call_method("READ", G_SCALAR);
1371 sv_setpvn(bufsv, "", 0);
1372 buffer = SvPV_force(bufsv, blen);
1373 length = SvIVx(*++MARK);
1375 DIE("Negative length");
1378 offset = SvIVx(*++MARK);
1382 if (!io || !IoIFP(io))
1385 if (PL_op->op_type == OP_RECV) {
1386 char namebuf[MAXPATHLEN];
1387 #if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE)
1388 bufsize = sizeof (struct sockaddr_in);
1390 bufsize = sizeof namebuf;
1392 buffer = SvGROW(bufsv, length+1);
1393 /* 'offset' means 'flags' here */
1394 length = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
1395 (struct sockaddr *)namebuf, &bufsize);
1398 SvCUR_set(bufsv, length);
1399 *SvEND(bufsv) = '\0';
1400 (void)SvPOK_only(bufsv);
1402 /* This should not be marked tainted if the fp is marked clean */
1403 if (!(IoFLAGS(io) & IOf_UNTAINT))
1404 SvTAINTED_on(bufsv);
1406 sv_setpvn(TARG, namebuf, bufsize);
1411 if (PL_op->op_type == OP_RECV)
1412 DIE(PL_no_sock_func, "recv");
1416 DIE("Offset outside string");
1419 bufsize = SvCUR(bufsv);
1420 buffer = SvGROW(bufsv, length+offset+1);
1421 if (offset > bufsize) { /* Zero any newly allocated space */
1422 Zero(buffer+bufsize, offset-bufsize, char);
1424 if (PL_op->op_type == OP_SYSREAD) {
1425 length = PerlLIO_read(PerlIO_fileno(IoIFP(io)), buffer+offset, length);
1428 #ifdef HAS_SOCKET__bad_code_maybe
1429 if (IoTYPE(io) == 's') {
1430 char namebuf[MAXPATHLEN];
1431 #if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1432 bufsize = sizeof (struct sockaddr_in);
1434 bufsize = sizeof namebuf;
1436 length = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer+offset, length, 0,
1437 (struct sockaddr *)namebuf, &bufsize);
1442 length = PerlIO_read(IoIFP(io), buffer+offset, length);
1443 /* fread() returns 0 on both error and EOF */
1444 if (length == 0 && PerlIO_error(IoIFP(io)))
1449 SvCUR_set(bufsv, length+offset);
1450 *SvEND(bufsv) = '\0';
1451 (void)SvPOK_only(bufsv);
1453 /* This should not be marked tainted if the fp is marked clean */
1454 if (!(IoFLAGS(io) & IOf_UNTAINT))
1455 SvTAINTED_on(bufsv);
1468 int items = (SP - PL_stack_base) - TOPMARK;
1472 sv = sv_2mortal(newSViv(sv_len(*SP)));
1476 return pp_send(ARGS);
1481 djSP; dMARK; dORIGMARK; dTARGET;
1492 if (PL_op->op_type == OP_SYSWRITE && (mg = SvTIED_mg((SV*)gv, 'q'))) {
1496 *MARK = SvTIED_obj((SV*)gv, mg);
1498 perl_call_method("WRITE", G_SCALAR);
1509 buffer = SvPV(bufsv, blen);
1510 length = SvIVx(*++MARK);
1512 DIE("Negative length");
1515 if (!io || !IoIFP(io)) {
1517 if (ckWARN(WARN_CLOSED)) {
1518 if (PL_op->op_type == OP_SYSWRITE)
1519 warner(WARN_CLOSED, "Syswrite on closed filehandle");
1521 warner(WARN_CLOSED, "Send on closed socket");
1524 else if (PL_op->op_type == OP_SYSWRITE) {
1526 offset = SvIVx(*++MARK);
1529 DIE("Offset outside string");
1531 } else if (offset >= blen && blen > 0)
1532 DIE("Offset outside string");
1535 if (length > blen - offset)
1536 length = blen - offset;
1537 length = PerlLIO_write(PerlIO_fileno(IoIFP(io)), buffer+offset, length);
1540 else if (SP > MARK) {
1543 sockbuf = SvPVx(*++MARK, mlen);
1544 length = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen, length,
1545 (struct sockaddr *)sockbuf, mlen);
1548 length = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, length);
1552 DIE(PL_no_sock_func, "send");
1567 return pp_sysread(ARGS);
1578 gv = PL_last_in_gv = (GV*)POPs;
1579 PUSHs(boolSV(!gv || do_eof(gv)));
1591 gv = PL_last_in_gv = (GV*)POPs;
1592 PUSHi( do_tell(gv) );
1598 return pp_sysseek(ARGS);
1606 Off_t offset = POPl;
1608 gv = PL_last_in_gv = (GV*)POPs;
1609 if (PL_op->op_type == OP_SEEK)
1610 PUSHs(boolSV(do_seek(gv, offset, whence)));
1612 Off_t n = do_sysseek(gv, offset, whence);
1613 PUSHs((n < 0) ? &PL_sv_undef
1614 : sv_2mortal(n ? newSViv((IV)n)
1615 : newSVpv(zero_but_true, ZBTLEN)));
1623 Off_t len = (Off_t)POPn;
1628 #if defined(HAS_TRUNCATE) || defined(HAS_CHSIZE) || defined(F_FREESP)
1629 if (PL_op->op_flags & OPf_SPECIAL) {
1630 tmpgv = gv_fetchpv(POPp, FALSE, SVt_PVIO);
1632 TAINT_PROPER("truncate");
1633 if (!GvIO(tmpgv) || !IoIFP(GvIOp(tmpgv)) ||
1635 ftruncate(PerlIO_fileno(IoIFP(GvIOn(tmpgv))), len) < 0)
1637 my_chsize(PerlIO_fileno(IoIFP(GvIOn(tmpgv))), len) < 0)
1645 if (SvTYPE(sv) == SVt_PVGV) {
1646 tmpgv = (GV*)sv; /* *main::FRED for example */
1649 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
1650 tmpgv = (GV*) SvRV(sv); /* \*main::FRED for example */
1654 name = SvPV(sv, PL_na);
1655 TAINT_PROPER("truncate");
1657 if (truncate(name, len) < 0)
1662 if ((tmpfd = PerlLIO_open(name, O_RDWR)) < 0)
1665 if (my_chsize(tmpfd, len) < 0)
1667 PerlLIO_close(tmpfd);
1676 SETERRNO(EBADF,RMS$_IFI);
1679 DIE("truncate not implemented");
1685 return pp_ioctl(ARGS);
1692 unsigned int func = U_I(POPn);
1693 int optype = PL_op->op_type;
1699 if (!io || !argsv || !IoIFP(io)) {
1700 SETERRNO(EBADF,RMS$_IFI); /* well, sort of... */
1704 if (SvPOK(argsv) || !SvNIOK(argsv)) {
1707 s = SvPV_force(argsv, len);
1708 need = IOCPARM_LEN(func);
1710 s = Sv_Grow(argsv, need + 1);
1711 SvCUR_set(argsv, need);
1714 s[SvCUR(argsv)] = 17; /* a little sanity check here */
1717 retval = SvIV(argsv);
1718 s = (char*)retval; /* ouch */
1721 TAINT_PROPER(optype == OP_IOCTL ? "ioctl" : "fcntl");
1723 if (optype == OP_IOCTL)
1725 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
1727 DIE("ioctl is not implemented");
1731 #if defined(OS2) && defined(__EMX__)
1732 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
1734 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
1737 DIE("fcntl is not implemented");
1741 if (s[SvCUR(argsv)] != 17)
1742 DIE("Possible memory corruption: %s overflowed 3rd argument",
1743 PL_op_name[optype]);
1744 s[SvCUR(argsv)] = 0; /* put our null back */
1745 SvSETMAGIC(argsv); /* Assume it has changed */
1754 PUSHp(zero_but_true, ZBTLEN);
1774 fp = IoIFP(GvIOp(gv));
1778 (void)PerlIO_flush(fp);
1779 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
1786 DIE(PL_no_func, "flock()");
1798 int protocol = POPi;
1806 SETERRNO(EBADF,LIB$_INVARG);
1812 do_close(gv, FALSE);
1814 TAINT_PROPER("socket");
1815 fd = PerlSock_socket(domain, type, protocol);
1818 IoIFP(io) = PerlIO_fdopen(fd, "r"); /* stdio gets confused about sockets */
1819 IoOFP(io) = PerlIO_fdopen(fd, "w");
1821 if (!IoIFP(io) || !IoOFP(io)) {
1822 if (IoIFP(io)) PerlIO_close(IoIFP(io));
1823 if (IoOFP(io)) PerlIO_close(IoOFP(io));
1824 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
1830 DIE(PL_no_sock_func, "socket");
1837 #ifdef HAS_SOCKETPAIR
1842 int protocol = POPi;
1855 do_close(gv1, FALSE);
1857 do_close(gv2, FALSE);
1859 TAINT_PROPER("socketpair");
1860 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
1862 IoIFP(io1) = PerlIO_fdopen(fd[0], "r");
1863 IoOFP(io1) = PerlIO_fdopen(fd[0], "w");
1865 IoIFP(io2) = PerlIO_fdopen(fd[1], "r");
1866 IoOFP(io2) = PerlIO_fdopen(fd[1], "w");
1868 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
1869 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
1870 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
1871 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
1872 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
1873 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
1874 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
1880 DIE(PL_no_sock_func, "socketpair");
1888 #ifdef MPE /* Requires PRIV mode to bind() to ports < 1024 */
1889 extern GETPRIVMODE();
1890 extern GETUSERMODE();
1895 register IO *io = GvIOn(gv);
1899 int mpeprivmode = 0;
1902 if (!io || !IoIFP(io))
1905 addr = SvPV(addrsv, len);
1906 TAINT_PROPER("bind");
1907 #ifdef MPE /* Deal with MPE bind() peculiarities */
1908 if (((struct sockaddr *)addr)->sa_family == AF_INET) {
1909 /* The address *MUST* stupidly be zero. */
1910 ((struct sockaddr_in *)addr)->sin_addr.s_addr = INADDR_ANY;
1911 /* PRIV mode is required to bind() to ports < 1024. */
1912 if (((struct sockaddr_in *)addr)->sin_port < 1024 &&
1913 ((struct sockaddr_in *)addr)->sin_port > 0) {
1914 GETPRIVMODE(); /* If this fails, we are aborted by MPE/iX. */
1919 if (PerlSock_bind(PerlIO_fileno(IoIFP(io)),
1920 (struct sockaddr *)addr, len) >= 0)
1923 #ifdef MPE /* Switch back to USER mode */
1934 if (ckWARN(WARN_CLOSED))
1935 warner(WARN_CLOSED, "bind() on closed fd");
1936 SETERRNO(EBADF,SS$_IVCHAN);
1939 DIE(PL_no_sock_func, "bind");
1950 register IO *io = GvIOn(gv);
1953 if (!io || !IoIFP(io))
1956 addr = SvPV(addrsv, len);
1957 TAINT_PROPER("connect");
1958 if (PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
1964 if (ckWARN(WARN_CLOSED))
1965 warner(WARN_CLOSED, "connect() on closed fd");
1966 SETERRNO(EBADF,SS$_IVCHAN);
1969 DIE(PL_no_sock_func, "connect");
1979 register IO *io = GvIOn(gv);
1981 if (!io || !IoIFP(io))
1984 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
1990 if (ckWARN(WARN_CLOSED))
1991 warner(WARN_CLOSED, "listen() on closed fd");
1992 SETERRNO(EBADF,SS$_IVCHAN);
1995 DIE(PL_no_sock_func, "listen");
2007 struct sockaddr saddr; /* use a struct to avoid alignment problems */
2008 Sock_size_t len = sizeof saddr;
2020 if (!gstio || !IoIFP(gstio))
2025 do_close(ngv, FALSE);
2027 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *)&saddr, &len);
2030 IoIFP(nstio) = PerlIO_fdopen(fd, "r");
2031 IoOFP(nstio) = PerlIO_fdopen(fd, "w");
2032 IoTYPE(nstio) = 's';
2033 if (!IoIFP(nstio) || !IoOFP(nstio)) {
2034 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2035 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
2036 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
2040 PUSHp((char *)&saddr, len);
2044 if (ckWARN(WARN_CLOSED))
2045 warner(WARN_CLOSED, "accept() on closed fd");
2046 SETERRNO(EBADF,SS$_IVCHAN);
2052 DIE(PL_no_sock_func, "accept");
2062 register IO *io = GvIOn(gv);
2064 if (!io || !IoIFP(io))
2067 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
2071 if (ckWARN(WARN_CLOSED))
2072 warner(WARN_CLOSED, "shutdown() on closed fd");
2073 SETERRNO(EBADF,SS$_IVCHAN);
2076 DIE(PL_no_sock_func, "shutdown");
2083 return pp_ssockopt(ARGS);
2085 DIE(PL_no_sock_func, "getsockopt");
2093 int optype = PL_op->op_type;
2096 unsigned int optname;
2102 if (optype == OP_GSOCKOPT)
2103 sv = sv_2mortal(NEWSV(22, 257));
2106 optname = (unsigned int) POPi;
2107 lvl = (unsigned int) POPi;
2111 if (!io || !IoIFP(io))
2114 fd = PerlIO_fileno(IoIFP(io));
2118 (void)SvPOK_only(sv);
2122 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
2132 buf = SvPV(sv, PL_na);
2136 aint = (int)SvIV(sv);
2140 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
2149 if (ckWARN(WARN_CLOSED))
2150 warner(WARN_CLOSED, "[gs]etsockopt() on closed fd");
2151 SETERRNO(EBADF,SS$_IVCHAN);
2156 DIE(PL_no_sock_func, "setsockopt");
2163 return pp_getpeername(ARGS);
2165 DIE(PL_no_sock_func, "getsockname");
2173 int optype = PL_op->op_type;
2177 register IO *io = GvIOn(gv);
2180 if (!io || !IoIFP(io))
2183 sv = sv_2mortal(NEWSV(22, 257));
2184 (void)SvPOK_only(sv);
2188 fd = PerlIO_fileno(IoIFP(io));
2190 case OP_GETSOCKNAME:
2191 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2194 case OP_GETPEERNAME:
2195 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2197 #if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2199 static const char nowhere[] = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
2200 /* If the call succeeded, make sure we don't have a zeroed port/addr */
2201 if (((struct sockaddr *)SvPVX(sv))->sa_family == AF_INET &&
2202 !memcmp((char *)SvPVX(sv) + sizeof(u_short), nowhere,
2203 sizeof(u_short) + sizeof(struct in_addr))) {
2210 #ifdef BOGUS_GETNAME_RETURN
2211 /* Interactive Unix, getpeername() and getsockname()
2212 does not return valid namelen */
2213 if (len == BOGUS_GETNAME_RETURN)
2214 len = sizeof(struct sockaddr);
2222 if (ckWARN(WARN_CLOSED))
2223 warner(WARN_CLOSED, "get{sock, peer}name() on closed fd");
2224 SETERRNO(EBADF,SS$_IVCHAN);
2229 DIE(PL_no_sock_func, "getpeername");
2237 return pp_stat(ARGS);
2247 if (PL_op->op_flags & OPf_REF) {
2248 tmpgv = cGVOP->op_gv;
2250 if (tmpgv != PL_defgv) {
2251 PL_laststype = OP_STAT;
2253 sv_setpv(PL_statname, "");
2254 PL_laststatval = (GvIO(tmpgv) && IoIFP(GvIOp(tmpgv))
2255 ? PerlLIO_fstat(PerlIO_fileno(IoIFP(GvIOn(tmpgv))), &PL_statcache) : -1);
2257 if (PL_laststatval < 0)
2262 if (SvTYPE(sv) == SVt_PVGV) {
2266 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2267 tmpgv = (GV*)SvRV(sv);
2270 sv_setpv(PL_statname, SvPV(sv,PL_na));
2273 PL_laststype = PL_op->op_type;
2274 if (PL_op->op_type == OP_LSTAT)
2275 PL_laststatval = PerlLIO_lstat(SvPV(PL_statname, PL_na), &PL_statcache);
2278 PL_laststatval = PerlLIO_stat(SvPV(PL_statname, PL_na), &PL_statcache);
2279 if (PL_laststatval < 0) {
2280 if (ckWARN(WARN_NEWLINE) && strchr(SvPV(PL_statname, PL_na), '\n'))
2281 warner(WARN_NEWLINE, PL_warn_nl, "stat");
2287 if (gimme != G_ARRAY) {
2288 if (gimme != G_VOID)
2289 XPUSHs(boolSV(max));
2295 PUSHs(sv_2mortal(newSViv((I32)PL_statcache.st_dev)));
2296 PUSHs(sv_2mortal(newSViv((I32)PL_statcache.st_ino)));
2297 PUSHs(sv_2mortal(newSViv((I32)PL_statcache.st_mode)));
2298 PUSHs(sv_2mortal(newSViv((I32)PL_statcache.st_nlink)));
2299 PUSHs(sv_2mortal(newSViv((I32)PL_statcache.st_uid)));
2300 PUSHs(sv_2mortal(newSViv((I32)PL_statcache.st_gid)));
2301 #ifdef USE_STAT_RDEV
2302 PUSHs(sv_2mortal(newSViv((I32)PL_statcache.st_rdev)));
2304 PUSHs(sv_2mortal(newSVpv("", 0)));
2306 PUSHs(sv_2mortal(newSViv((I32)PL_statcache.st_size)));
2308 PUSHs(sv_2mortal(newSVnv((U32)PL_statcache.st_atime)));
2309 PUSHs(sv_2mortal(newSVnv((U32)PL_statcache.st_mtime)));
2310 PUSHs(sv_2mortal(newSVnv((U32)PL_statcache.st_ctime)));
2312 PUSHs(sv_2mortal(newSViv((I32)PL_statcache.st_atime)));
2313 PUSHs(sv_2mortal(newSViv((I32)PL_statcache.st_mtime)));
2314 PUSHs(sv_2mortal(newSViv((I32)PL_statcache.st_ctime)));
2316 #ifdef USE_STAT_BLOCKS
2317 PUSHs(sv_2mortal(newSViv((I32)PL_statcache.st_blksize)));
2318 PUSHs(sv_2mortal(newSViv((I32)PL_statcache.st_blocks)));
2320 PUSHs(sv_2mortal(newSVpv("", 0)));
2321 PUSHs(sv_2mortal(newSVpv("", 0)));
2331 #if defined(HAS_ACCESS) && defined(R_OK)
2332 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2333 result = access(TOPp, R_OK);
2341 result = my_stat(ARGS);
2343 result = my_stat(ARGS);
2348 if (cando(S_IRUSR, 0, &PL_statcache))
2357 #if defined(HAS_ACCESS) && defined(W_OK)
2358 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2359 result = access(TOPp, W_OK);
2367 result = my_stat(ARGS);
2369 result = my_stat(ARGS);
2374 if (cando(S_IWUSR, 0, &PL_statcache))
2383 #if defined(HAS_ACCESS) && defined(X_OK)
2384 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2385 result = access(TOPp, X_OK);
2393 result = my_stat(ARGS);
2395 result = my_stat(ARGS);
2400 if (cando(S_IXUSR, 0, &PL_statcache))
2409 #ifdef PERL_EFF_ACCESS_R_OK
2410 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2411 result = PERL_EFF_ACCESS_R_OK(TOPp);
2419 result = my_stat(ARGS);
2421 result = my_stat(ARGS);
2426 if (cando(S_IRUSR, 1, &PL_statcache))
2435 #ifdef PERL_EFF_ACCESS_W_OK
2436 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2437 result = PERL_EFF_ACCESS_W_OK(TOPp);
2445 result = my_stat(ARGS);
2447 result = my_stat(ARGS);
2452 if (cando(S_IWUSR, 1, &PL_statcache))
2461 #ifdef PERL_EFF_ACCESS_X_OK
2462 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2463 result = PERL_EFF_ACCESS_X_OK(TOPp);
2471 result = my_stat(ARGS);
2473 result = my_stat(ARGS);
2478 if (cando(S_IXUSR, 1, &PL_statcache))
2485 I32 result = my_stat(ARGS);
2494 return pp_ftrowned(ARGS);
2499 I32 result = my_stat(ARGS);
2503 if (PL_statcache.st_uid == (PL_op->op_type == OP_FTEOWNED ? PL_euid : PL_uid) )
2510 I32 result = my_stat(ARGS);
2514 if (!PL_statcache.st_size)
2521 I32 result = my_stat(ARGS);
2525 PUSHi(PL_statcache.st_size);
2531 I32 result = my_stat(ARGS);
2535 PUSHn( ((I32)PL_basetime - (I32)PL_statcache.st_mtime) / 86400.0 );
2541 I32 result = my_stat(ARGS);
2545 PUSHn( ((I32)PL_basetime - (I32)PL_statcache.st_atime) / 86400.0 );
2551 I32 result = my_stat(ARGS);
2555 PUSHn( ((I32)PL_basetime - (I32)PL_statcache.st_ctime) / 86400.0 );
2561 I32 result = my_stat(ARGS);
2565 if (S_ISSOCK(PL_statcache.st_mode))
2572 I32 result = my_stat(ARGS);
2576 if (S_ISCHR(PL_statcache.st_mode))
2583 I32 result = my_stat(ARGS);
2587 if (S_ISBLK(PL_statcache.st_mode))
2594 I32 result = my_stat(ARGS);
2598 if (S_ISREG(PL_statcache.st_mode))
2605 I32 result = my_stat(ARGS);
2609 if (S_ISDIR(PL_statcache.st_mode))
2616 I32 result = my_stat(ARGS);
2620 if (S_ISFIFO(PL_statcache.st_mode))
2627 I32 result = my_lstat(ARGS);
2631 if (S_ISLNK(PL_statcache.st_mode))
2640 I32 result = my_stat(ARGS);
2644 if (PL_statcache.st_mode & S_ISUID)
2654 I32 result = my_stat(ARGS);
2658 if (PL_statcache.st_mode & S_ISGID)
2668 I32 result = my_stat(ARGS);
2672 if (PL_statcache.st_mode & S_ISVTX)
2683 char *tmps = Nullch;
2685 if (PL_op->op_flags & OPf_REF)
2687 else if (isGV(TOPs))
2689 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
2690 gv = (GV*)SvRV(POPs);
2692 gv = gv_fetchpv(tmps = POPp, FALSE, SVt_PVIO);
2694 if (GvIO(gv) && IoIFP(GvIOp(gv)))
2695 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
2696 else if (tmps && isDIGIT(*tmps))
2700 if (PerlLIO_isatty(fd))
2705 #if defined(atarist) /* this will work with atariST. Configure will
2706 make guesses for other systems. */
2707 # define FILE_base(f) ((f)->_base)
2708 # define FILE_ptr(f) ((f)->_ptr)
2709 # define FILE_cnt(f) ((f)->_cnt)
2710 # define FILE_bufsiz(f) ((f)->_cnt + ((f)->_ptr - (f)->_base))
2720 register STDCHAR *s;
2725 if (PL_op->op_flags & OPf_REF)
2727 else if (isGV(TOPs))
2729 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
2730 gv = (GV*)SvRV(POPs);
2736 if (gv == PL_defgv) {
2738 io = GvIO(PL_statgv);
2741 goto really_filename;
2746 PL_laststatval = -1;
2747 sv_setpv(PL_statname, "");
2748 io = GvIO(PL_statgv);
2750 if (io && IoIFP(io)) {
2751 if (! PerlIO_has_base(IoIFP(io)))
2752 DIE("-T and -B not implemented on filehandles");
2753 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
2754 if (PL_laststatval < 0)
2756 if (S_ISDIR(PL_statcache.st_mode)) /* handle NFS glitch */
2757 if (PL_op->op_type == OP_FTTEXT)
2761 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
2762 i = PerlIO_getc(IoIFP(io));
2764 (void)PerlIO_ungetc(IoIFP(io),i);
2766 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
2768 len = PerlIO_get_bufsiz(IoIFP(io));
2769 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
2770 /* sfio can have large buffers - limit to 512 */
2775 if (ckWARN(WARN_UNOPENED))
2776 warner(WARN_UNOPENED, "Test on unopened file <%s>",
2777 GvENAME(cGVOP->op_gv));
2778 SETERRNO(EBADF,RMS$_IFI);
2786 PL_laststatval = -1;
2787 sv_setpv(PL_statname, SvPV(sv, PL_na));
2789 i = PerlLIO_open3(SvPV(sv, PL_na), O_RDONLY, 0);
2791 i = PerlLIO_open(SvPV(sv, PL_na), 0);
2794 if (ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, PL_na), '\n'))
2795 warner(WARN_NEWLINE, PL_warn_nl, "open");
2798 PL_laststatval = PerlLIO_fstat(i, &PL_statcache);
2799 if (PL_laststatval < 0)
2801 len = PerlLIO_read(i, tbuf, 512);
2802 (void)PerlLIO_close(i);
2804 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
2805 RETPUSHNO; /* special case NFS directories */
2806 RETPUSHYES; /* null file is anything */
2811 /* now scan s to look for textiness */
2812 /* XXX ASCII dependent code */
2814 for (i = 0; i < len; i++, s++) {
2815 if (!*s) { /* null never allowed in text */
2820 else if (!(isPRINT(*s) || isSPACE(*s)))
2826 *s != '\n' && *s != '\r' && *s != '\b' &&
2827 *s != '\t' && *s != '\f' && *s != 27)
2832 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
2840 return pp_fttext(ARGS);
2855 if (!tmps || !*tmps) {
2856 svp = hv_fetch(GvHVn(PL_envgv), "HOME", 4, FALSE);
2858 tmps = SvPV(*svp, PL_na);
2860 if (!tmps || !*tmps) {
2861 svp = hv_fetch(GvHVn(PL_envgv), "LOGDIR", 6, FALSE);
2863 tmps = SvPV(*svp, PL_na);
2866 if (!tmps || !*tmps) {
2867 svp = hv_fetch(GvHVn(PL_envgv), "SYS$LOGIN", 9, FALSE);
2869 tmps = SvPV(*svp, PL_na);
2872 TAINT_PROPER("chdir");
2873 PUSHi( PerlDir_chdir(tmps) >= 0 );
2875 /* Clear the DEFAULT element of ENV so we'll get the new value
2877 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
2884 djSP; dMARK; dTARGET;
2887 value = (I32)apply(PL_op->op_type, MARK, SP);
2892 DIE(PL_no_func, "Unsupported function chown");
2902 TAINT_PROPER("chroot");
2903 PUSHi( chroot(tmps) >= 0 );
2906 DIE(PL_no_func, "chroot");
2912 djSP; dMARK; dTARGET;
2914 value = (I32)apply(PL_op->op_type, MARK, SP);
2922 djSP; dMARK; dTARGET;
2924 value = (I32)apply(PL_op->op_type, MARK, SP);
2932 djSP; dMARK; dTARGET;
2934 value = (I32)apply(PL_op->op_type, MARK, SP);
2946 char *tmps = SvPV(TOPs, PL_na);
2947 TAINT_PROPER("rename");
2949 anum = PerlLIO_rename(tmps, tmps2);
2951 if (!(anum = PerlLIO_stat(tmps, &PL_statbuf))) {
2952 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
2955 if (PL_euid || PerlLIO_stat(tmps2, &PL_statbuf) < 0 || !S_ISDIR(PL_statbuf.st_mode))
2956 (void)UNLINK(tmps2);
2957 if (!(anum = link(tmps, tmps2)))
2958 anum = UNLINK(tmps);
2971 char *tmps = SvPV(TOPs, PL_na);
2972 TAINT_PROPER("link");
2973 SETi( link(tmps, tmps2) >= 0 );
2975 DIE(PL_no_func, "Unsupported function link");
2985 char *tmps = SvPV(TOPs, PL_na);
2986 TAINT_PROPER("symlink");
2987 SETi( symlink(tmps, tmps2) >= 0 );
2990 DIE(PL_no_func, "symlink");
2999 char buf[MAXPATHLEN];
3002 #ifndef INCOMPLETE_TAINTS
3006 len = readlink(tmps, buf, sizeof buf);
3014 RETSETUNDEF; /* just pretend it's a normal file */
3018 #if !defined(HAS_MKDIR) || !defined(HAS_RMDIR)
3020 dooneliner(cmd, filename)
3024 char *save_filename = filename;
3030 New(666, cmdline, strlen(cmd) + (strlen(filename) * 2) + 10, char);
3031 strcpy(cmdline, cmd);
3032 strcat(cmdline, " ");
3033 for (s = cmdline + strlen(cmdline); *filename; ) {
3038 myfp = PerlProc_popen(cmdline, "r");
3042 SV *tmpsv = sv_newmortal();
3043 /* Need to save/restore 'PL_rs' ?? */
3044 s = sv_gets(tmpsv, myfp, 0);
3045 (void)PerlProc_pclose(myfp);
3049 #ifdef HAS_SYS_ERRLIST
3054 /* you don't see this */
3056 #ifdef HAS_SYS_ERRLIST
3064 if (instr(s, errmsg)) {
3071 #define EACCES EPERM
3073 if (instr(s, "cannot make"))
3074 SETERRNO(EEXIST,RMS$_FEX);
3075 else if (instr(s, "existing file"))
3076 SETERRNO(EEXIST,RMS$_FEX);
3077 else if (instr(s, "ile exists"))
3078 SETERRNO(EEXIST,RMS$_FEX);
3079 else if (instr(s, "non-exist"))
3080 SETERRNO(ENOENT,RMS$_FNF);
3081 else if (instr(s, "does not exist"))
3082 SETERRNO(ENOENT,RMS$_FNF);
3083 else if (instr(s, "not empty"))
3084 SETERRNO(EBUSY,SS$_DEVOFFLINE);
3085 else if (instr(s, "cannot access"))
3086 SETERRNO(EACCES,RMS$_PRV);
3088 SETERRNO(EPERM,RMS$_PRV);
3091 else { /* some mkdirs return no failure indication */
3092 anum = (PerlLIO_stat(save_filename, &PL_statbuf) >= 0);
3093 if (PL_op->op_type == OP_RMDIR)
3098 SETERRNO(EACCES,RMS$_PRV); /* a guess */
3114 char *tmps = SvPV(TOPs, PL_na);
3116 TAINT_PROPER("mkdir");
3118 SETi( PerlDir_mkdir(tmps, mode) >= 0 );
3120 SETi( dooneliner("mkdir", tmps) );
3121 oldumask = PerlLIO_umask(0);
3122 PerlLIO_umask(oldumask);
3123 PerlLIO_chmod(tmps, (mode & ~oldumask) & 0777);
3134 TAINT_PROPER("rmdir");
3136 XPUSHi( PerlDir_rmdir(tmps) >= 0 );
3138 XPUSHi( dooneliner("rmdir", tmps) );
3143 /* Directory calls. */
3148 #if defined(Direntry_t) && defined(HAS_READDIR)
3149 char *dirname = POPp;
3151 register IO *io = GvIOn(gv);
3157 PerlDir_close(IoDIRP(io));
3158 if (!(IoDIRP(io) = PerlDir_open(dirname)))
3164 SETERRNO(EBADF,RMS$_DIR);
3167 DIE(PL_no_dir_func, "opendir");
3174 #if defined(Direntry_t) && defined(HAS_READDIR)
3176 Direntry_t *readdir _((DIR *));
3178 register Direntry_t *dp;
3180 register IO *io = GvIOn(gv);
3183 if (!io || !IoDIRP(io))
3186 if (GIMME == G_ARRAY) {
3188 while (dp = (Direntry_t *)PerlDir_read(IoDIRP(io))) {
3190 sv = newSVpv(dp->d_name, dp->d_namlen);
3192 sv = newSVpv(dp->d_name, 0);
3194 #ifndef INCOMPLETE_TAINTS
3197 XPUSHs(sv_2mortal(sv));
3201 if (!(dp = (Direntry_t *)PerlDir_read(IoDIRP(io))))
3204 sv = newSVpv(dp->d_name, dp->d_namlen);
3206 sv = newSVpv(dp->d_name, 0);
3208 #ifndef INCOMPLETE_TAINTS
3211 XPUSHs(sv_2mortal(sv));
3217 SETERRNO(EBADF,RMS$_ISI);
3218 if (GIMME == G_ARRAY)
3223 DIE(PL_no_dir_func, "readdir");
3230 #if defined(HAS_TELLDIR) || defined(telldir)
3231 # ifdef NEED_TELLDIR_PROTO /* XXX does _anyone_ need this? --AD 2/20/1998 */
3232 long telldir _((DIR *));
3235 register IO *io = GvIOn(gv);
3237 if (!io || !IoDIRP(io))
3240 PUSHi( PerlDir_tell(IoDIRP(io)) );
3244 SETERRNO(EBADF,RMS$_ISI);
3247 DIE(PL_no_dir_func, "telldir");
3254 #if defined(HAS_SEEKDIR) || defined(seekdir)
3257 register IO *io = GvIOn(gv);
3259 if (!io || !IoDIRP(io))
3262 (void)PerlDir_seek(IoDIRP(io), along);
3267 SETERRNO(EBADF,RMS$_ISI);
3270 DIE(PL_no_dir_func, "seekdir");
3277 #if defined(HAS_REWINDDIR) || defined(rewinddir)
3279 register IO *io = GvIOn(gv);
3281 if (!io || !IoDIRP(io))
3284 (void)PerlDir_rewind(IoDIRP(io));
3288 SETERRNO(EBADF,RMS$_ISI);
3291 DIE(PL_no_dir_func, "rewinddir");
3298 #if defined(Direntry_t) && defined(HAS_READDIR)
3300 register IO *io = GvIOn(gv);
3302 if (!io || !IoDIRP(io))
3305 #ifdef VOID_CLOSEDIR
3306 PerlDir_close(IoDIRP(io));
3308 if (PerlDir_close(IoDIRP(io)) < 0) {
3309 IoDIRP(io) = 0; /* Don't try to close again--coredumps on SysV */
3318 SETERRNO(EBADF,RMS$_IFI);
3321 DIE(PL_no_dir_func, "closedir");
3325 /* Process control. */
3340 if (tmpgv = gv_fetchpv("$", TRUE, SVt_PV))
3341 sv_setiv(GvSV(tmpgv), (IV)getpid());
3342 hv_clear(PL_pidstatus); /* no kids, so don't wait for 'em */
3347 DIE(PL_no_func, "Unsupported function fork");
3353 #if !defined(DOSISH) || defined(OS2) || defined(WIN32)
3358 childpid = wait4pid(-1, &argflags, 0);
3359 STATUS_NATIVE_SET((childpid > 0) ? argflags : -1);
3363 DIE(PL_no_func, "Unsupported function wait");
3369 #if !defined(DOSISH) || defined(OS2) || defined(WIN32)
3377 childpid = wait4pid(childpid, &argflags, optype);
3378 STATUS_NATIVE_SET((childpid > 0) ? argflags : -1);
3382 DIE(PL_no_func, "Unsupported function waitpid");
3388 djSP; dMARK; dORIGMARK; dTARGET;
3393 Sigsave_t ihand,qhand; /* place to save signals during system() */
3395 if (SP - MARK == 1) {
3397 char *junk = SvPV(TOPs, PL_na);
3399 TAINT_PROPER("system");
3402 #if (defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(OS2)
3403 while ((childpid = vfork()) == -1) {
3404 if (errno != EAGAIN) {
3413 rsignal_save(SIGINT, SIG_IGN, &ihand);
3414 rsignal_save(SIGQUIT, SIG_IGN, &qhand);
3416 result = wait4pid(childpid, &status, 0);
3417 } while (result == -1 && errno == EINTR);
3418 (void)rsignal_restore(SIGINT, &ihand);
3419 (void)rsignal_restore(SIGQUIT, &qhand);
3420 STATUS_NATIVE_SET(result == -1 ? -1 : status);
3421 do_execfree(); /* free any memory child malloced on vfork */
3423 PUSHi(STATUS_CURRENT);
3426 if (PL_op->op_flags & OPf_STACKED) {
3427 SV *really = *++MARK;
3428 value = (I32)do_aexec(really, MARK, SP);
3430 else if (SP - MARK != 1)
3431 value = (I32)do_aexec(Nullsv, MARK, SP);
3433 value = (I32)do_exec(SvPVx(sv_mortalcopy(*SP), PL_na));
3436 #else /* ! FORK or VMS or OS/2 */
3437 if (PL_op->op_flags & OPf_STACKED) {
3438 SV *really = *++MARK;
3439 value = (I32)do_aspawn(really, (void **)MARK, (void **)SP);
3441 else if (SP - MARK != 1)
3442 value = (I32)do_aspawn(Nullsv, (void **)MARK, (void **)SP);
3444 value = (I32)do_spawn(SvPVx(sv_mortalcopy(*SP), PL_na));
3446 STATUS_NATIVE_SET(value);
3449 PUSHi(STATUS_CURRENT);
3450 #endif /* !FORK or VMS */
3456 djSP; dMARK; dORIGMARK; dTARGET;
3459 if (PL_op->op_flags & OPf_STACKED) {
3460 SV *really = *++MARK;
3461 value = (I32)do_aexec(really, MARK, SP);
3463 else if (SP - MARK != 1)
3465 value = (I32)vms_do_aexec(Nullsv, MARK, SP);
3469 (void ) do_aspawn(Nullsv, MARK, SP);
3473 value = (I32)do_aexec(Nullsv, MARK, SP);
3478 char *junk = SvPV(*SP, PL_na);
3480 TAINT_PROPER("exec");
3483 value = (I32)vms_do_exec(SvPVx(sv_mortalcopy(*SP), PL_na));
3486 (void) do_spawn(SvPVx(sv_mortalcopy(*SP), PL_na));
3489 value = (I32)do_exec(SvPVx(sv_mortalcopy(*SP), PL_na));
3500 djSP; dMARK; dTARGET;
3503 value = (I32)apply(PL_op->op_type, MARK, SP);
3508 DIE(PL_no_func, "Unsupported function kill");
3516 XPUSHi( getppid() );
3519 DIE(PL_no_func, "getppid");
3535 value = (I32)BSD_GETPGRP(pid);
3537 if (pid != 0 && pid != getpid())
3538 DIE("POSIX getpgrp can't take an argument");
3539 value = (I32)getpgrp();
3544 DIE(PL_no_func, "getpgrp()");
3563 TAINT_PROPER("setpgrp");
3565 SETi( BSD_SETPGRP(pid, pgrp) >= 0 );
3567 if ((pgrp != 0 && pgrp != getpid()) || (pid != 0 && pid != getpid()))
3568 DIE("POSIX setpgrp can't take an argument");
3569 SETi( setpgrp() >= 0 );
3570 #endif /* USE_BSDPGRP */
3573 DIE(PL_no_func, "setpgrp()");
3582 #ifdef HAS_GETPRIORITY
3585 SETi( getpriority(which, who) );
3588 DIE(PL_no_func, "getpriority()");
3598 #ifdef HAS_SETPRIORITY
3602 TAINT_PROPER("setpriority");
3603 SETi( setpriority(which, who, niceval) >= 0 );
3606 DIE(PL_no_func, "setpriority()");
3616 XPUSHn( time(Null(Time_t*)) );
3618 XPUSHi( time(Null(Time_t*)) );
3623 /* XXX The POSIX name is CLK_TCK; it is to be preferred
3624 to HZ. Probably. For now, assume that if the system
3625 defines HZ, it does so correctly. (Will this break
3627 Probably we ought to use _sysconf(_SC_CLK_TCK), if
3628 it's supported. --AD 9/96.
3644 DIE("times not implemented");
3649 (void)PerlProc_times(&PL_timesbuf);
3651 (void)PerlProc_times((tbuffer_t *)&PL_timesbuf); /* time.h uses different name for */
3652 /* struct tms, though same data */
3656 PUSHs(sv_2mortal(newSVnv(((double)PL_timesbuf.tms_utime)/HZ)));
3657 if (GIMME == G_ARRAY) {
3658 PUSHs(sv_2mortal(newSVnv(((double)PL_timesbuf.tms_stime)/HZ)));
3659 PUSHs(sv_2mortal(newSVnv(((double)PL_timesbuf.tms_cutime)/HZ)));
3660 PUSHs(sv_2mortal(newSVnv(((double)PL_timesbuf.tms_cstime)/HZ)));
3663 #endif /* HAS_TIMES */
3668 return pp_gmtime(ARGS);
3676 static char *dayname[] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
3677 static char *monname[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
3678 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
3684 when = (Time_t)SvNVx(POPs);
3686 when = (Time_t)SvIVx(POPs);
3689 if (PL_op->op_type == OP_LOCALTIME)
3690 tmbuf = localtime(&when);
3692 tmbuf = gmtime(&when);
3696 if (GIMME != G_ARRAY) {
3701 tsv = newSVpvf("%s %s %2d %02d:%02d:%02d %d",
3702 dayname[tmbuf->tm_wday],
3703 monname[tmbuf->tm_mon],
3708 tmbuf->tm_year + 1900);
3709 PUSHs(sv_2mortal(tsv));
3712 PUSHs(sv_2mortal(newSViv((I32)tmbuf->tm_sec)));
3713 PUSHs(sv_2mortal(newSViv((I32)tmbuf->tm_min)));
3714 PUSHs(sv_2mortal(newSViv((I32)tmbuf->tm_hour)));
3715 PUSHs(sv_2mortal(newSViv((I32)tmbuf->tm_mday)));
3716 PUSHs(sv_2mortal(newSViv((I32)tmbuf->tm_mon)));
3717 PUSHs(sv_2mortal(newSViv((I32)tmbuf->tm_year)));
3718 PUSHs(sv_2mortal(newSViv((I32)tmbuf->tm_wday)));
3719 PUSHs(sv_2mortal(newSViv((I32)tmbuf->tm_yday)));
3720 PUSHs(sv_2mortal(newSViv((I32)tmbuf->tm_isdst)));
3731 anum = alarm((unsigned int)anum);
3738 DIE(PL_no_func, "Unsupported function alarm");
3749 (void)time(&lasttime);
3754 PerlProc_sleep((unsigned int)duration);
3757 XPUSHi(when - lasttime);
3761 /* Shared memory. */
3765 return pp_semget(ARGS);
3770 return pp_semctl(ARGS);
3775 return pp_shmwrite(ARGS);
3780 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
3781 djSP; dMARK; dTARGET;
3782 I32 value = (I32)(do_shmio(PL_op->op_type, MARK, SP) >= 0);
3787 return pp_semget(ARGS);
3791 /* Message passing. */
3795 return pp_semget(ARGS);
3800 return pp_semctl(ARGS);
3805 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
3806 djSP; dMARK; dTARGET;
3807 I32 value = (I32)(do_msgsnd(MARK, SP) >= 0);
3812 return pp_semget(ARGS);
3818 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
3819 djSP; dMARK; dTARGET;
3820 I32 value = (I32)(do_msgrcv(MARK, SP) >= 0);
3825 return pp_semget(ARGS);
3833 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
3834 djSP; dMARK; dTARGET;
3835 int anum = do_ipcget(PL_op->op_type, MARK, SP);
3842 DIE("System V IPC is not implemented on this machine");
3848 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
3849 djSP; dMARK; dTARGET;
3850 int anum = do_ipcctl(PL_op->op_type, MARK, SP);
3858 PUSHp(zero_but_true, ZBTLEN);
3862 return pp_semget(ARGS);
3868 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
3869 djSP; dMARK; dTARGET;
3870 I32 value = (I32)(do_semop(MARK, SP) >= 0);
3875 return pp_semget(ARGS);
3879 /* Get system info. */
3883 #ifdef HAS_GETHOSTBYNAME
3884 return pp_ghostent(ARGS);
3886 DIE(PL_no_sock_func, "gethostbyname");
3892 #ifdef HAS_GETHOSTBYADDR
3893 return pp_ghostent(ARGS);
3895 DIE(PL_no_sock_func, "gethostbyaddr");
3902 #if defined(HAS_GETHOSTBYNAME) || defined(HAS_GETHOSTBYADDR) || defined(HAS_GETHOSTENT)
3903 I32 which = PL_op->op_type;
3904 register char **elem;
3906 #ifndef HAS_GETHOST_PROTOS /* XXX Do we need individual probes? */
3907 struct hostent *PerlSock_gethostbyaddr(Netdb_host_t, Netdb_hlen_t, int);
3908 struct hostent *PerlSock_gethostbyname(Netdb_name_t);
3909 struct hostent *PerlSock_gethostent(void);
3911 struct hostent *hent;
3915 if (which == OP_GHBYNAME)
3916 #ifdef HAS_GETHOSTBYNAME
3917 hent = PerlSock_gethostbyname(POPp);
3919 DIE(PL_no_sock_func, "gethostbyname");
3921 else if (which == OP_GHBYADDR) {
3922 #ifdef HAS_GETHOSTBYADDR
3923 int addrtype = POPi;
3926 Netdb_host_t addr = (Netdb_host_t) SvPV(addrsv, addrlen);
3928 hent = PerlSock_gethostbyaddr(addr, (Netdb_hlen_t) addrlen, addrtype);
3930 DIE(PL_no_sock_func, "gethostbyaddr");
3934 #ifdef HAS_GETHOSTENT
3935 hent = PerlSock_gethostent();
3937 DIE(PL_no_sock_func, "gethostent");
3940 #ifdef HOST_NOT_FOUND
3942 STATUS_NATIVE_SET(h_errno);
3945 if (GIMME != G_ARRAY) {
3946 PUSHs(sv = sv_newmortal());
3948 if (which == OP_GHBYNAME) {
3950 sv_setpvn(sv, hent->h_addr, hent->h_length);
3953 sv_setpv(sv, (char*)hent->h_name);
3959 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
3960 sv_setpv(sv, (char*)hent->h_name);
3961 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
3962 for (elem = hent->h_aliases; elem && *elem; elem++) {
3963 sv_catpv(sv, *elem);
3965 sv_catpvn(sv, " ", 1);
3967 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
3968 sv_setiv(sv, (IV)hent->h_addrtype);
3969 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
3970 len = hent->h_length;
3971 sv_setiv(sv, (IV)len);
3973 for (elem = hent->h_addr_list; elem && *elem; elem++) {
3974 XPUSHs(sv = sv_mortalcopy(&PL_sv_no));
3975 sv_setpvn(sv, *elem, len);
3978 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
3980 sv_setpvn(sv, hent->h_addr, len);
3985 DIE(PL_no_sock_func, "gethostent");
3991 #ifdef HAS_GETNETBYNAME
3992 return pp_gnetent(ARGS);
3994 DIE(PL_no_sock_func, "getnetbyname");
4000 #ifdef HAS_GETNETBYADDR
4001 return pp_gnetent(ARGS);
4003 DIE(PL_no_sock_func, "getnetbyaddr");
4010 #if defined(HAS_GETNETBYNAME) || defined(HAS_GETNETBYADDR) || defined(HAS_GETNETENT)
4011 I32 which = PL_op->op_type;
4012 register char **elem;
4014 #ifndef HAS_GETNET_PROTOS /* XXX Do we need individual probes? */
4015 struct netent *PerlSock_getnetbyaddr(Netdb_net_t, int);
4016 struct netent *PerlSock_getnetbyname(Netdb_name_t);
4017 struct netent *PerlSock_getnetent(void);
4019 struct netent *nent;
4021 if (which == OP_GNBYNAME)
4022 #ifdef HAS_GETNETBYNAME
4023 nent = PerlSock_getnetbyname(POPp);
4025 DIE(PL_no_sock_func, "getnetbyname");
4027 else if (which == OP_GNBYADDR) {
4028 #ifdef HAS_GETNETBYADDR
4029 int addrtype = POPi;
4030 Netdb_net_t addr = (Netdb_net_t) U_L(POPn);
4031 nent = PerlSock_getnetbyaddr(addr, addrtype);
4033 DIE(PL_no_sock_func, "getnetbyaddr");
4037 #ifdef HAS_GETNETENT
4038 nent = PerlSock_getnetent();
4040 DIE(PL_no_sock_func, "getnetent");
4044 if (GIMME != G_ARRAY) {
4045 PUSHs(sv = sv_newmortal());
4047 if (which == OP_GNBYNAME)
4048 sv_setiv(sv, (IV)nent->n_net);
4050 sv_setpv(sv, nent->n_name);
4056 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4057 sv_setpv(sv, nent->n_name);
4058 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4059 for (elem = nent->n_aliases; elem && *elem; elem++) {
4060 sv_catpv(sv, *elem);
4062 sv_catpvn(sv, " ", 1);
4064 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4065 sv_setiv(sv, (IV)nent->n_addrtype);
4066 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4067 sv_setiv(sv, (IV)nent->n_net);
4072 DIE(PL_no_sock_func, "getnetent");
4078 #ifdef HAS_GETPROTOBYNAME
4079 return pp_gprotoent(ARGS);
4081 DIE(PL_no_sock_func, "getprotobyname");
4087 #ifdef HAS_GETPROTOBYNUMBER
4088 return pp_gprotoent(ARGS);
4090 DIE(PL_no_sock_func, "getprotobynumber");
4097 #if defined(HAS_GETPROTOBYNAME) || defined(HAS_GETPROTOBYNUMBER) || defined(HAS_GETPROTOENT)
4098 I32 which = PL_op->op_type;
4099 register char **elem;
4101 #ifndef HAS_GETPROTO_PROTOS /* XXX Do we need individual probes? */
4102 struct protoent *PerlSock_getprotobyname(Netdb_name_t);
4103 struct protoent *PerlSock_getprotobynumber(int);
4104 struct protoent *PerlSock_getprotoent(void);
4106 struct protoent *pent;
4108 if (which == OP_GPBYNAME)
4109 #ifdef HAS_GETPROTOBYNAME
4110 pent = PerlSock_getprotobyname(POPp);
4112 DIE(PL_no_sock_func, "getprotobyname");
4114 else if (which == OP_GPBYNUMBER)
4115 #ifdef HAS_GETPROTOBYNUMBER
4116 pent = PerlSock_getprotobynumber(POPi);
4118 DIE(PL_no_sock_func, "getprotobynumber");
4121 #ifdef HAS_GETPROTOENT
4122 pent = PerlSock_getprotoent();
4124 DIE(PL_no_sock_func, "getprotoent");
4128 if (GIMME != G_ARRAY) {
4129 PUSHs(sv = sv_newmortal());
4131 if (which == OP_GPBYNAME)
4132 sv_setiv(sv, (IV)pent->p_proto);
4134 sv_setpv(sv, pent->p_name);
4140 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4141 sv_setpv(sv, pent->p_name);
4142 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4143 for (elem = pent->p_aliases; elem && *elem; elem++) {
4144 sv_catpv(sv, *elem);
4146 sv_catpvn(sv, " ", 1);
4148 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4149 sv_setiv(sv, (IV)pent->p_proto);
4154 DIE(PL_no_sock_func, "getprotoent");
4160 #ifdef HAS_GETSERVBYNAME
4161 return pp_gservent(ARGS);
4163 DIE(PL_no_sock_func, "getservbyname");
4169 #ifdef HAS_GETSERVBYPORT
4170 return pp_gservent(ARGS);
4172 DIE(PL_no_sock_func, "getservbyport");
4179 #if defined(HAS_GETSERVBYNAME) || defined(HAS_GETSERVBYPORT) || defined(HAS_GETSERVENT)
4180 I32 which = PL_op->op_type;
4181 register char **elem;
4183 #ifndef HAS_GETSERV_PROTOS /* XXX Do we need individual probes? */
4184 struct servent *PerlSock_getservbyname(Netdb_name_t, Netdb_name_t);
4185 struct servent *PerlSock_getservbyport(int, Netdb_name_t);
4186 struct servent *PerlSock_getservent(void);
4188 struct servent *sent;
4190 if (which == OP_GSBYNAME) {
4191 #ifdef HAS_GETSERVBYNAME
4195 if (proto && !*proto)
4198 sent = PerlSock_getservbyname(name, proto);
4200 DIE(PL_no_sock_func, "getservbyname");
4203 else if (which == OP_GSBYPORT) {
4204 #ifdef HAS_GETSERVBYPORT
4206 unsigned short port = POPu;
4209 port = PerlSock_htons(port);
4211 sent = PerlSock_getservbyport(port, proto);
4213 DIE(PL_no_sock_func, "getservbyport");
4217 #ifdef HAS_GETSERVENT
4218 sent = PerlSock_getservent();
4220 DIE(PL_no_sock_func, "getservent");
4224 if (GIMME != G_ARRAY) {
4225 PUSHs(sv = sv_newmortal());
4227 if (which == OP_GSBYNAME) {
4229 sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
4231 sv_setiv(sv, (IV)(sent->s_port));
4235 sv_setpv(sv, sent->s_name);
4241 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4242 sv_setpv(sv, sent->s_name);
4243 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4244 for (elem = sent->s_aliases; elem && *elem; elem++) {
4245 sv_catpv(sv, *elem);
4247 sv_catpvn(sv, " ", 1);
4249 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4251 sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
4253 sv_setiv(sv, (IV)(sent->s_port));
4255 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4256 sv_setpv(sv, sent->s_proto);
4261 DIE(PL_no_sock_func, "getservent");
4268 #ifdef HAS_SETHOSTENT
4269 PerlSock_sethostent(TOPi);
4272 DIE(PL_no_sock_func, "sethostent");
4279 #ifdef HAS_SETNETENT
4280 PerlSock_setnetent(TOPi);
4283 DIE(PL_no_sock_func, "setnetent");
4290 #ifdef HAS_SETPROTOENT
4291 PerlSock_setprotoent(TOPi);
4294 DIE(PL_no_sock_func, "setprotoent");
4301 #ifdef HAS_SETSERVENT
4302 PerlSock_setservent(TOPi);
4305 DIE(PL_no_sock_func, "setservent");
4312 #ifdef HAS_ENDHOSTENT
4313 PerlSock_endhostent();
4317 DIE(PL_no_sock_func, "endhostent");
4324 #ifdef HAS_ENDNETENT
4325 PerlSock_endnetent();
4329 DIE(PL_no_sock_func, "endnetent");
4336 #ifdef HAS_ENDPROTOENT
4337 PerlSock_endprotoent();
4341 DIE(PL_no_sock_func, "endprotoent");
4348 #ifdef HAS_ENDSERVENT
4349 PerlSock_endservent();
4353 DIE(PL_no_sock_func, "endservent");
4360 return pp_gpwent(ARGS);
4362 DIE(PL_no_func, "getpwnam");
4369 return pp_gpwent(ARGS);
4371 DIE(PL_no_func, "getpwuid");
4378 #if defined(HAS_PASSWD) && defined(HAS_GETPWENT)
4379 I32 which = PL_op->op_type;
4381 struct passwd *pwent;
4383 if (which == OP_GPWNAM)
4384 pwent = getpwnam(POPp);
4385 else if (which == OP_GPWUID)
4386 pwent = getpwuid(POPi);
4388 pwent = (struct passwd *)getpwent();
4391 if (GIMME != G_ARRAY) {
4392 PUSHs(sv = sv_newmortal());
4394 if (which == OP_GPWNAM)
4395 sv_setiv(sv, (IV)pwent->pw_uid);
4397 sv_setpv(sv, pwent->pw_name);
4403 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4404 sv_setpv(sv, pwent->pw_name);
4406 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4408 sv_setpv(sv, pwent->pw_passwd);
4411 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4412 sv_setiv(sv, (IV)pwent->pw_uid);
4414 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4415 sv_setiv(sv, (IV)pwent->pw_gid);
4417 /* pw_change, pw_quota, and pw_age are mutually exclusive. */
4418 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4420 sv_setiv(sv, (IV)pwent->pw_change);
4423 sv_setiv(sv, (IV)pwent->pw_quota);
4426 sv_setpv(sv, pwent->pw_age);
4431 /* pw_class and pw_comment are mutually exclusive. */
4432 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4434 sv_setpv(sv, pwent->pw_class);
4437 sv_setpv(sv, pwent->pw_comment);
4441 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4443 sv_setpv(sv, pwent->pw_gecos);
4445 #ifndef INCOMPLETE_TAINTS
4446 /* pw_gecos is tainted because user himself can diddle with it. */
4450 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4451 sv_setpv(sv, pwent->pw_dir);
4453 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4454 sv_setpv(sv, pwent->pw_shell);
4457 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4458 sv_setiv(sv, (IV)pwent->pw_expire);
4463 DIE(PL_no_func, "getpwent");
4470 #if defined(HAS_PASSWD) && defined(HAS_SETPWENT) && !defined(CYGWIN32)
4474 DIE(PL_no_func, "setpwent");
4481 #if defined(HAS_PASSWD) && defined(HAS_ENDPWENT)
4485 DIE(PL_no_func, "endpwent");
4492 return pp_ggrent(ARGS);
4494 DIE(PL_no_func, "getgrnam");
4501 return pp_ggrent(ARGS);
4503 DIE(PL_no_func, "getgrgid");
4510 #if defined(HAS_GROUP) && defined(HAS_GETGRENT)
4511 I32 which = PL_op->op_type;
4512 register char **elem;
4514 struct group *grent;
4516 if (which == OP_GGRNAM)
4517 grent = (struct group *)getgrnam(POPp);
4518 else if (which == OP_GGRGID)
4519 grent = (struct group *)getgrgid(POPi);
4521 grent = (struct group *)getgrent();
4524 if (GIMME != G_ARRAY) {
4525 PUSHs(sv = sv_newmortal());
4527 if (which == OP_GGRNAM)
4528 sv_setiv(sv, (IV)grent->gr_gid);
4530 sv_setpv(sv, grent->gr_name);
4536 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4537 sv_setpv(sv, grent->gr_name);
4539 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4541 sv_setpv(sv, grent->gr_passwd);
4544 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4545 sv_setiv(sv, (IV)grent->gr_gid);
4547 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4548 for (elem = grent->gr_mem; elem && *elem; elem++) {
4549 sv_catpv(sv, *elem);
4551 sv_catpvn(sv, " ", 1);
4557 DIE(PL_no_func, "getgrent");
4564 #if defined(HAS_GROUP) && defined(HAS_SETGRENT)
4568 DIE(PL_no_func, "setgrent");
4575 #if defined(HAS_GROUP) && defined(HAS_ENDGRENT)
4579 DIE(PL_no_func, "endgrent");
4589 if (!(tmps = PerlProc_getlogin()))
4591 PUSHp(tmps, strlen(tmps));
4594 DIE(PL_no_func, "getlogin");
4598 /* Miscellaneous. */
4603 djSP; dMARK; dORIGMARK; dTARGET;
4604 register I32 items = SP - MARK;
4605 unsigned long a[20];
4611 while (++MARK <= SP) {
4612 if (SvTAINTED(*MARK)) {
4618 TAINT_PROPER("syscall");
4621 /* This probably won't work on machines where sizeof(long) != sizeof(int)
4622 * or where sizeof(long) != sizeof(char*). But such machines will
4623 * not likely have syscall implemented either, so who cares?
4625 while (++MARK <= SP) {
4626 if (SvNIOK(*MARK) || !i)
4627 a[i++] = SvIV(*MARK);
4628 else if (*MARK == &PL_sv_undef)
4631 a[i++] = (unsigned long)SvPV_force(*MARK, PL_na);
4637 DIE("Too many args to syscall");
4639 DIE("Too few args to syscall");
4641 retval = syscall(a[0]);
4644 retval = syscall(a[0],a[1]);
4647 retval = syscall(a[0],a[1],a[2]);
4650 retval = syscall(a[0],a[1],a[2],a[3]);
4653 retval = syscall(a[0],a[1],a[2],a[3],a[4]);
4656 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5]);
4659 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6]);
4662 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7]);
4666 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8]);
4669 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9]);
4672 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
4676 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
4680 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
4684 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
4685 a[10],a[11],a[12],a[13]);
4687 #endif /* atarist */
4693 DIE(PL_no_func, "syscall");
4697 #ifdef FCNTL_EMULATE_FLOCK
4699 /* XXX Emulate flock() with fcntl().
4700 What's really needed is a good file locking module.
4704 fcntl_emulate_flock(int fd, int operation)
4708 switch (operation & ~LOCK_NB) {
4710 flock.l_type = F_RDLCK;
4713 flock.l_type = F_WRLCK;
4716 flock.l_type = F_UNLCK;
4722 flock.l_whence = SEEK_SET;
4723 flock.l_start = flock.l_len = 0L;
4725 return fcntl(fd, (operation & LOCK_NB) ? F_SETLK : F_SETLKW, &flock);
4728 #endif /* FCNTL_EMULATE_FLOCK */
4730 #ifdef LOCKF_EMULATE_FLOCK
4732 /* XXX Emulate flock() with lockf(). This is just to increase
4733 portability of scripts. The calls are not completely
4734 interchangeable. What's really needed is a good file
4738 /* The lockf() constants might have been defined in <unistd.h>.
4739 Unfortunately, <unistd.h> causes troubles on some mixed
4740 (BSD/POSIX) systems, such as SunOS 4.1.3.
4742 Further, the lockf() constants aren't POSIX, so they might not be
4743 visible if we're compiling with _POSIX_SOURCE defined. Thus, we'll
4744 just stick in the SVID values and be done with it. Sigh.
4748 # define F_ULOCK 0 /* Unlock a previously locked region */
4751 # define F_LOCK 1 /* Lock a region for exclusive use */
4754 # define F_TLOCK 2 /* Test and lock a region for exclusive use */
4757 # define F_TEST 3 /* Test a region for other processes locks */
4761 lockf_emulate_flock (fd, operation)
4769 /* flock locks entire file so for lockf we need to do the same */
4771 pos = PerlLIO_lseek(fd, (Off_t)0, SEEK_CUR); /* get pos to restore later */
4772 if (pos > 0) /* is seekable and needs to be repositioned */
4773 if (PerlLIO_lseek(fd, (Off_t)0, SEEK_SET) < 0)
4774 pos = -1; /* seek failed, so don't seek back afterwards */
4777 switch (operation) {
4779 /* LOCK_SH - get a shared lock */
4781 /* LOCK_EX - get an exclusive lock */
4783 i = lockf (fd, F_LOCK, 0);
4786 /* LOCK_SH|LOCK_NB - get a non-blocking shared lock */
4787 case LOCK_SH|LOCK_NB:
4788 /* LOCK_EX|LOCK_NB - get a non-blocking exclusive lock */
4789 case LOCK_EX|LOCK_NB:
4790 i = lockf (fd, F_TLOCK, 0);
4792 if ((errno == EAGAIN) || (errno == EACCES))
4793 errno = EWOULDBLOCK;
4796 /* LOCK_UN - unlock (non-blocking is a no-op) */
4798 case LOCK_UN|LOCK_NB:
4799 i = lockf (fd, F_ULOCK, 0);
4802 /* Default - can't decipher operation */
4809 if (pos > 0) /* need to restore position of the handle */
4810 PerlLIO_lseek(fd, pos, SEEK_SET); /* ignore error here */
4815 #endif /* LOCKF_EMULATE_FLOCK */