3 * Copyright (c) 1991-2002, 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.
18 #define PERL_IN_PP_SYS_C
22 /* Shadow password support for solaris - pdo@cs.umd.edu
23 * Not just Solaris: at least HP-UX, IRIX, Linux.
24 * The API is from SysV.
26 * There are at least two more shadow interfaces,
27 * see the comments in pp_gpwent().
31 /* There is a MAXINT coming from <shadow.h> <- <hpsecurity.h> <- <values.h>
32 * and another MAXINT from "perl.h" <- <sys/param.h>. */
40 extern "C" int syscall(unsigned long,...);
45 # include <sys/wait.h>
49 # include <sys/resource.h>
58 # include <sys/select.h>
62 /* XXX Configure test needed.
63 h_errno might not be a simple 'int', especially for multi-threaded
64 applications, see "extern int errno in perl.h". Creating such
65 a test requires taking into account the differences between
66 compiling multithreaded and singlethreaded ($ccflags et al).
67 HOST_NOT_FOUND is typically defined in <netdb.h>.
69 #if defined(HOST_NOT_FOUND) && !defined(h_errno) && !defined(__CYGWIN__)
78 struct passwd *getpwnam (char *);
79 struct passwd *getpwuid (Uid_t);
83 struct passwd *getpwent (void);
91 struct group *getgrnam (char *);
92 struct group *getgrgid (Gid_t);
95 struct group *getgrent (void);
100 # if defined(_MSC_VER) || defined(__MINGW32__)
101 # include <sys/utime.h>
108 # ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
111 # define my_chsize PerlLIO_chsize
116 #else /* no flock() */
118 /* fcntl.h might not have been included, even if it exists, because
119 the current Configure only sets I_FCNTL if it's needed to pick up
120 the *_OK constants. Make sure it has been included before testing
121 the fcntl() locking constants. */
122 # if defined(HAS_FCNTL) && !defined(I_FCNTL)
126 # if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
127 # define FLOCK fcntl_emulate_flock
128 # define FCNTL_EMULATE_FLOCK
129 # else /* no flock() or fcntl(F_SETLK,...) */
131 # define FLOCK lockf_emulate_flock
132 # define LOCKF_EMULATE_FLOCK
134 # endif /* no flock() or fcntl(F_SETLK,...) */
137 static int FLOCK (int, int);
140 * These are the flock() constants. Since this sytems doesn't have
141 * flock(), the values of the constants are probably not available.
155 # endif /* emulating flock() */
157 #endif /* no flock() */
160 static char zero_but_true[ZBTLEN + 1] = "0 but true";
162 #if defined(I_SYS_ACCESS) && !defined(R_OK)
163 # include <sys/access.h>
166 #if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
167 # define FD_CLOEXEC 1 /* NeXT needs this */
170 #undef PERL_EFF_ACCESS_R_OK /* EFFective uid/gid ACCESS R_OK */
171 #undef PERL_EFF_ACCESS_W_OK
172 #undef PERL_EFF_ACCESS_X_OK
174 /* F_OK unused: if stat() cannot find it... */
176 #if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
177 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
178 # define PERL_EFF_ACCESS_R_OK(p) (access((p), R_OK | EFF_ONLY_OK))
179 # define PERL_EFF_ACCESS_W_OK(p) (access((p), W_OK | EFF_ONLY_OK))
180 # define PERL_EFF_ACCESS_X_OK(p) (access((p), X_OK | EFF_ONLY_OK))
183 #if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_EACCESS)
184 # ifdef I_SYS_SECURITY
185 # include <sys/security.h>
189 # define PERL_EFF_ACCESS_R_OK(p) (eaccess((p), R_OK, ACC_SELF))
190 # define PERL_EFF_ACCESS_W_OK(p) (eaccess((p), W_OK, ACC_SELF))
191 # define PERL_EFF_ACCESS_X_OK(p) (eaccess((p), X_OK, ACC_SELF))
194 # define PERL_EFF_ACCESS_R_OK(p) (eaccess((p), R_OK))
195 # define PERL_EFF_ACCESS_W_OK(p) (eaccess((p), W_OK))
196 # define PERL_EFF_ACCESS_X_OK(p) (eaccess((p), X_OK))
200 #if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESSX) && defined(ACC_SELF)
202 # define PERL_EFF_ACCESS_R_OK(p) (accessx((p), R_OK, ACC_SELF))
203 # define PERL_EFF_ACCESS_W_OK(p) (accessx((p), W_OK, ACC_SELF))
204 # define PERL_EFF_ACCESS_X_OK(p) (accessx((p), X_OK, ACC_SELF))
207 #if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESS) \
208 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
209 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
212 S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
214 Uid_t ruid = getuid();
215 Uid_t euid = geteuid();
216 Gid_t rgid = getgid();
217 Gid_t egid = getegid();
221 #if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
222 Perl_croak(aTHX_ "switching effective uid is not implemented");
225 if (setreuid(euid, ruid))
228 if (setresuid(euid, ruid, (Uid_t)-1))
231 Perl_croak(aTHX_ "entering effective uid failed");
234 #if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
235 Perl_croak(aTHX_ "switching effective gid is not implemented");
238 if (setregid(egid, rgid))
241 if (setresgid(egid, rgid, (Gid_t)-1))
244 Perl_croak(aTHX_ "entering effective gid failed");
247 res = access(path, mode);
250 if (setreuid(ruid, euid))
253 if (setresuid(ruid, euid, (Uid_t)-1))
256 Perl_croak(aTHX_ "leaving effective uid failed");
259 if (setregid(rgid, egid))
262 if (setresgid(rgid, egid, (Gid_t)-1))
265 Perl_croak(aTHX_ "leaving effective gid failed");
270 # define PERL_EFF_ACCESS_R_OK(p) (emulate_eaccess((p), R_OK))
271 # define PERL_EFF_ACCESS_W_OK(p) (emulate_eaccess((p), W_OK))
272 # define PERL_EFF_ACCESS_X_OK(p) (emulate_eaccess((p), X_OK))
275 #if !defined(PERL_EFF_ACCESS_R_OK)
276 /* With it or without it: anyway you get a warning: either that
277 it is unused, or it is declared static and never defined.
280 S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
282 Perl_croak(aTHX_ "switching effective uid is not implemented");
298 if (PL_op->op_private & OPpOPEN_IN_RAW)
300 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
302 fp = PerlProc_popen(tmps, mode);
305 if (PL_curcop->cop_io) {
306 type = SvPV_nolen(PL_curcop->cop_io);
309 PerlIO_apply_layers(aTHX_ fp,mode,type);
311 if (gimme == G_VOID) {
313 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
317 else if (gimme == G_SCALAR) {
318 sv_setpv(TARG, ""); /* note that this preserves previous buffer */
319 while (sv_gets(TARG, fp, SvCUR(TARG)) != Nullch)
330 if (sv_gets(sv, fp, 0) == Nullch) {
334 XPUSHs(sv_2mortal(sv));
335 if (SvLEN(sv) - SvCUR(sv) > 20) {
336 SvLEN_set(sv, SvCUR(sv)+1);
337 Renew(SvPVX(sv), SvLEN(sv), char);
342 STATUS_NATIVE_SET(PerlProc_pclose(fp));
343 TAINT; /* "I believe that this is not gratuitous!" */
346 STATUS_NATIVE_SET(-1);
347 if (gimme == G_SCALAR)
357 tryAMAGICunTARGET(iter, -1);
359 /* Note that we only ever get here if File::Glob fails to load
360 * without at the same time croaking, for some reason, or if
361 * perl was built with PERL_EXTERNAL_GLOB */
368 * The external globbing program may use things we can't control,
369 * so for security reasons we must assume the worst.
372 taint_proper(PL_no_security, "glob");
376 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
377 PL_last_in_gv = (GV*)*PL_stack_sp--;
379 SAVESPTR(PL_rs); /* This is not permanent, either. */
380 PL_rs = sv_2mortal(newSVpvn("\000", 1));
383 *SvPVX(PL_rs) = '\n';
387 result = do_readline();
394 PL_last_in_gv = cGVOP_gv;
395 return do_readline();
404 if (SP - MARK != 1) {
406 do_join(TARG, &PL_sv_no, MARK, SP);
413 tmps = SvPV(tmpsv, len);
416 (void)SvUPGRADE(error, SVt_PV);
417 if (SvPOK(error) && SvCUR(error))
418 sv_catpv(error, "\t...caught");
420 tmps = SvPV(tmpsv, len);
423 tmpsv = sv_2mortal(newSVpvn("Warning: something's wrong", 26));
425 Perl_warn(aTHX_ "%"SVf, tmpsv);
437 VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
439 if (SP - MARK != 1) {
441 do_join(TARG, &PL_sv_no, MARK, SP);
443 tmps = SvPV(tmpsv, len);
449 tmps = (SvROK(tmpsv) && PL_in_eval) ? Nullch : SvPV(tmpsv, len);
453 (void)SvUPGRADE(error, SVt_PV);
454 if (multiarg ? SvROK(error) : SvROK(tmpsv)) {
456 SvSetSV(error,tmpsv);
457 else if (sv_isobject(error)) {
458 HV *stash = SvSTASH(SvRV(error));
459 GV *gv = gv_fetchmethod(stash, "PROPAGATE");
461 SV *file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
462 SV *line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
469 call_sv((SV*)GvCV(gv),
470 G_SCALAR|G_EVAL|G_KEEPERR);
471 sv_setsv(error,*PL_stack_sp--);
474 DIE(aTHX_ Nullformat);
477 if (SvPOK(error) && SvCUR(error))
478 sv_catpv(error, "\t...propagated");
480 tmps = SvPV(tmpsv, len);
484 tmpsv = sv_2mortal(newSVpvn("Died", 4));
486 DIE(aTHX_ "%"SVf, tmpsv);
506 DIE(aTHX_ PL_no_usym, "filehandle");
507 if ((io = GvIOp(gv)))
508 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
510 if (io && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) {
511 /* Method's args are same as ours ... */
512 /* ... except handle is replaced by the object */
513 *MARK-- = SvTIED_obj((SV*)io, mg);
517 call_method("OPEN", G_SCALAR);
530 tmps = SvPV(sv, len);
531 ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, Nullfp, MARK+1, (SP-MARK));
534 PUSHi( (I32)PL_forkprocess );
535 else if (PL_forkprocess == 0) /* we are a new child */
554 if (gv && (io = GvIO(gv))
555 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
558 XPUSHs(SvTIED_obj((SV*)io, mg));
561 call_method("CLOSE", G_SCALAR);
567 PUSHs(boolSV(do_close(gv, TRUE)));
587 if (SvTYPE(rgv) != SVt_PVGV || SvTYPE(wgv) != SVt_PVGV)
588 DIE(aTHX_ PL_no_usym, "filehandle");
593 do_close(rgv, FALSE);
595 do_close(wgv, FALSE);
597 if (PerlProc_pipe(fd) < 0)
600 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
601 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
602 IoIFP(wstio) = IoOFP(wstio);
603 IoTYPE(rstio) = IoTYPE_RDONLY;
604 IoTYPE(wstio) = IoTYPE_WRONLY;
606 if (!IoIFP(rstio) || !IoOFP(wstio)) {
607 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
608 else PerlLIO_close(fd[0]);
609 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
610 else PerlLIO_close(fd[1]);
613 #if defined(HAS_FCNTL) && defined(F_SETFD)
614 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
615 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
622 DIE(aTHX_ PL_no_func, "pipe");
638 if (gv && (io = GvIO(gv))
639 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
642 XPUSHs(SvTIED_obj((SV*)io, mg));
645 call_method("FILENO", G_SCALAR);
651 if (!gv || !(io = GvIO(gv)) || !(fp = IoIFP(io))) {
652 /* Can't do this because people seem to do things like
653 defined(fileno($foo)) to check whether $foo is a valid fh.
654 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
655 report_evil_fh(gv, io, PL_op->op_type);
660 PUSHi(PerlIO_fileno(fp));
671 anum = PerlLIO_umask(0);
672 (void)PerlLIO_umask(anum);
675 anum = PerlLIO_umask(POPi);
676 TAINT_PROPER("umask");
679 /* Only DIE if trying to restrict permissions on `user' (self).
680 * Otherwise it's harmless and more useful to just return undef
681 * since 'group' and 'other' concepts probably don't exist here. */
682 if (MAXARG >= 1 && (POPi & 0700))
683 DIE(aTHX_ "umask not implemented");
684 XPUSHs(&PL_sv_undef);
706 if (gv && (io = GvIO(gv))
707 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
710 XPUSHs(SvTIED_obj((SV*)io, mg));
715 call_method("BINMODE", G_SCALAR);
722 if (!(io = GvIO(gv)) || !(fp = IoIFP(io))) {
723 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
724 report_evil_fh(gv, io, PL_op->op_type);
728 if (PerlIO_binmode(aTHX_ fp,IoTYPE(io),mode_from_discipline(discp),
729 (discp) ? SvPV_nolen(discp) : Nullch))
743 I32 markoff = MARK - PL_stack_base;
745 int how = PERL_MAGIC_tied;
750 switch(SvTYPE(varsv)) {
752 methname = "TIEHASH";
753 HvEITER((HV *)varsv) = Null(HE *);
756 methname = "TIEARRAY";
759 #ifdef GV_UNIQUE_CHECK
760 if (GvUNIQUE((GV*)varsv)) {
761 Perl_croak(aTHX_ "Attempt to tie unique GV");
764 methname = "TIEHANDLE";
765 how = PERL_MAGIC_tiedscalar;
766 /* For tied filehandles, we apply tiedscalar magic to the IO
767 slot of the GP rather than the GV itself. AMS 20010812 */
769 GvIOp(varsv) = newIO();
770 varsv = (SV *)GvIOp(varsv);
773 methname = "TIESCALAR";
774 how = PERL_MAGIC_tiedscalar;
778 if (sv_isobject(*MARK)) {
780 PUSHSTACKi(PERLSI_MAGIC);
786 call_method(methname, G_SCALAR);
789 /* Not clear why we don't call call_method here too.
790 * perhaps to get different error message ?
792 stash = gv_stashsv(*MARK, FALSE);
793 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
794 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%s\"",
795 methname, SvPV(*MARK,n_a));
798 PUSHSTACKi(PERLSI_MAGIC);
804 call_sv((SV*)GvCV(gv), G_SCALAR);
810 if (sv_isobject(sv)) {
811 sv_unmagic(varsv, how);
812 /* Croak if a self-tie on an aggregate is attempted. */
813 if (varsv == SvRV(sv) &&
814 (SvTYPE(sv) == SVt_PVAV ||
815 SvTYPE(sv) == SVt_PVHV))
817 "Self-ties of arrays and hashes are not supported");
818 sv_magic(varsv, sv, how, Nullch, 0);
821 SP = PL_stack_base + markoff;
831 char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
832 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
834 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
837 if ((mg = SvTIED_mg(sv, how))) {
838 SV *obj = SvRV(mg->mg_obj);
842 if ((gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE)) &&
843 isGV(gv) && (cv = GvCV(gv))) {
845 XPUSHs(SvTIED_obj((SV*)gv, mg));
846 XPUSHs(sv_2mortal(newSViv(SvREFCNT(obj)-1)));
849 call_sv((SV *)cv, G_VOID);
853 else if (ckWARN(WARN_UNTIE)) {
854 if (mg && SvREFCNT(obj) > 1)
855 Perl_warner(aTHX_ WARN_UNTIE,
856 "untie attempted while %"UVuf" inner references still exist",
857 (UV)SvREFCNT(obj) - 1 ) ;
860 sv_unmagic(sv, how) ;
870 char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
871 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
873 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
876 if ((mg = SvTIED_mg(sv, how))) {
877 SV *osv = SvTIED_obj(sv, mg);
878 if (osv == mg->mg_obj)
879 osv = sv_mortalcopy(osv);
897 sv = sv_mortalcopy(&PL_sv_no);
898 sv_setpv(sv, "AnyDBM_File");
899 stash = gv_stashsv(sv, FALSE);
900 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
902 require_pv("AnyDBM_File.pm");
904 if (!(gv = gv_fetchmethod(stash, "TIEHASH")))
905 DIE(aTHX_ "No dbm on this machine");
915 PUSHs(sv_2mortal(newSVuv(O_RDWR|O_CREAT)));
917 PUSHs(sv_2mortal(newSVuv(O_RDWR)));
920 call_sv((SV*)GvCV(gv), G_SCALAR);
923 if (!sv_isobject(TOPs)) {
928 PUSHs(sv_2mortal(newSVuv(O_RDONLY)));
931 call_sv((SV*)GvCV(gv), G_SCALAR);
935 if (sv_isobject(TOPs)) {
936 sv_unmagic((SV *) hv, PERL_MAGIC_tied);
937 sv_magic((SV*)hv, TOPs, PERL_MAGIC_tied, Nullch, 0);
959 struct timeval timebuf;
960 struct timeval *tbuf = &timebuf;
964 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
969 # if BYTEORDER & 0xf0000
970 # define ORDERBYTE (0x88888888 - BYTEORDER)
972 # define ORDERBYTE (0x4444 - BYTEORDER)
978 for (i = 1; i <= 3; i++) {
986 /* little endians can use vecs directly */
987 #if BYTEORDER == 0x1234 || BYTEORDER == 0x12345678
988 # if SELECT_MIN_BITS > 1
989 /* If SELECT_MIN_BITS is greater than one we most probably will want
990 * to align the sizes with SELECT_MIN_BITS/8 because for example
991 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
992 * UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
993 * on (sets/tests/clears bits) is 32 bits. */
994 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
996 growsize = sizeof(fd_set);
1005 masksize = NFDBITS / NBBY;
1007 masksize = sizeof(long); /* documented int, everyone seems to use long */
1009 growsize = maxlen + (masksize - (maxlen % masksize));
1010 Zero(&fd_sets[0], 4, char*);
1018 timebuf.tv_sec = (long)value;
1019 value -= (NV)timebuf.tv_sec;
1020 timebuf.tv_usec = (long)(value * 1000000.0);
1023 tbuf = Null(struct timeval*);
1025 for (i = 1; i <= 3; i++) {
1031 else if (!SvPOK(sv))
1032 SvPV_force(sv,n_a); /* force string conversion */
1035 Sv_Grow(sv, growsize);
1039 while (++j <= growsize) {
1043 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1045 New(403, fd_sets[i], growsize, char);
1046 for (offset = 0; offset < growsize; offset += masksize) {
1047 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1048 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1051 fd_sets[i] = SvPVX(sv);
1055 nfound = PerlSock_select(
1057 (Select_fd_set_t) fd_sets[1],
1058 (Select_fd_set_t) fd_sets[2],
1059 (Select_fd_set_t) fd_sets[3],
1061 for (i = 1; i <= 3; i++) {
1064 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1066 for (offset = 0; offset < growsize; offset += masksize) {
1067 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1068 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1070 Safefree(fd_sets[i]);
1077 if (GIMME == G_ARRAY && tbuf) {
1078 value = (NV)(timebuf.tv_sec) +
1079 (NV)(timebuf.tv_usec) / 1000000.0;
1080 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
1081 sv_setnv(sv, value);
1085 DIE(aTHX_ "select not implemented");
1090 Perl_setdefout(pTHX_ GV *gv)
1093 (void)SvREFCNT_inc(gv);
1095 SvREFCNT_dec(PL_defoutgv);
1102 GV *newdefout, *egv;
1105 newdefout = (PL_op->op_private > 0) ? ((GV *) POPs) : (GV *) NULL;
1107 egv = GvEGV(PL_defoutgv);
1112 XPUSHs(&PL_sv_undef);
1114 GV **gvp = (GV**)hv_fetch(hv, GvNAME(egv), GvNAMELEN(egv), FALSE);
1115 if (gvp && *gvp == egv) {
1116 gv_efullname4(TARG, PL_defoutgv, Nullch, TRUE);
1120 XPUSHs(sv_2mortal(newRV((SV*)egv)));
1125 if (!GvIO(newdefout))
1126 gv_IOadd(newdefout);
1127 setdefout(newdefout);
1145 if (gv && (io = GvIO(gv))
1146 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1148 I32 gimme = GIMME_V;
1150 XPUSHs(SvTIED_obj((SV*)io, mg));
1153 call_method("GETC", gimme);
1156 if (gimme == G_SCALAR)
1157 SvSetMagicSV_nosteal(TARG, TOPs);
1160 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
1161 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)
1162 && (!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY)))
1163 report_evil_fh(gv, io, PL_op->op_type);
1167 sv_setpv(TARG, " ");
1168 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
1169 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1170 /* Find out how many bytes the char needs */
1171 Size_t len = UTF8SKIP(SvPVX(TARG));
1174 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1175 SvCUR_set(TARG,1+len);
1185 return pp_sysread();
1189 S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
1191 register PERL_CONTEXT *cx;
1192 I32 gimme = GIMME_V;
1193 AV* padlist = CvPADLIST(cv);
1194 SV** svp = AvARRAY(padlist);
1200 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
1202 SAVEVPTR(PL_curpad);
1203 PL_curpad = AvARRAY((AV*)svp[1]);
1205 setdefout(gv); /* locally select filehandle so $% et al work */
1238 SV *tmpsv = sv_newmortal();
1239 gv_efullname4(tmpsv, fgv, Nullch, FALSE);
1240 name = SvPV_nolen(tmpsv);
1243 DIE(aTHX_ "Undefined format \"%s\" called", name);
1244 DIE(aTHX_ "Not a format reference");
1247 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
1249 IoFLAGS(io) &= ~IOf_DIDTOP;
1250 return doform(cv,gv,PL_op->op_next);
1256 GV *gv = cxstack[cxstack_ix].blk_sub.gv;
1257 register IO *io = GvIOp(gv);
1258 PerlIO *ofp = IoOFP(io);
1262 register PERL_CONTEXT *cx;
1264 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
1265 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
1268 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1269 PL_formtarget != PL_toptarget)
1273 if (!IoTOP_GV(io)) {
1277 if (!IoTOP_NAME(io)) {
1278 if (!IoFMT_NAME(io))
1279 IoFMT_NAME(io) = savepv(GvNAME(gv));
1280 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%s_TOP", IoFMT_NAME(io)));
1281 topgv = gv_fetchpv(SvPVX(topname), FALSE, SVt_PVFM);
1282 if ((topgv && GvFORM(topgv)) ||
1283 !gv_fetchpv("top",FALSE,SVt_PVFM))
1284 IoTOP_NAME(io) = savepv(SvPVX(topname));
1286 IoTOP_NAME(io) = savepv("top");
1288 topgv = gv_fetchpv(IoTOP_NAME(io),FALSE, SVt_PVFM);
1289 if (!topgv || !GvFORM(topgv)) {
1290 IoLINES_LEFT(io) = 100000000;
1293 IoTOP_GV(io) = topgv;
1295 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1296 I32 lines = IoLINES_LEFT(io);
1297 char *s = SvPVX(PL_formtarget);
1298 if (lines <= 0) /* Yow, header didn't even fit!!! */
1300 while (lines-- > 0) {
1301 s = strchr(s, '\n');
1307 STRLEN save = SvCUR(PL_formtarget);
1308 SvCUR_set(PL_formtarget, s - SvPVX(PL_formtarget));
1309 do_print(PL_formtarget, ofp);
1310 SvCUR_set(PL_formtarget, save);
1311 sv_chop(PL_formtarget, s);
1312 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
1315 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
1316 do_print(PL_formfeed, ofp);
1317 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1319 PL_formtarget = PL_toptarget;
1320 IoFLAGS(io) |= IOf_DIDTOP;
1323 DIE(aTHX_ "bad top format reference");
1328 SV *sv = sv_newmortal();
1329 gv_efullname4(sv, fgv, Nullch, FALSE);
1330 name = SvPV_nolen(sv);
1333 DIE(aTHX_ "Undefined top format \"%s\" called",name);
1336 DIE(aTHX_ "Undefined top format called");
1340 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
1341 return doform(cv,gv,PL_op);
1345 POPBLOCK(cx,PL_curpm);
1351 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
1353 /* integrate with report_evil_fh()? */
1356 SV* sv = sv_newmortal();
1357 gv_efullname4(sv, gv, Nullch, FALSE);
1358 name = SvPV_nolen(sv);
1361 Perl_warner(aTHX_ WARN_IO,
1362 "Filehandle %s opened only for input", name);
1364 Perl_warner(aTHX_ WARN_IO,
1365 "Filehandle opened only for input");
1367 else if (ckWARN(WARN_CLOSED))
1368 report_evil_fh(gv, io, PL_op->op_type);
1373 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
1374 if (ckWARN(WARN_IO))
1375 Perl_warner(aTHX_ WARN_IO, "page overflow");
1377 if (!do_print(PL_formtarget, fp))
1380 FmLINES(PL_formtarget) = 0;
1381 SvCUR_set(PL_formtarget, 0);
1382 *SvEND(PL_formtarget) = '\0';
1383 if (IoFLAGS(io) & IOf_FLUSH)
1384 (void)PerlIO_flush(fp);
1389 PL_formtarget = PL_bodytarget;
1391 return pop_return();
1396 dSP; dMARK; dORIGMARK;
1403 if (PL_op->op_flags & OPf_STACKED)
1408 if (gv && (io = GvIO(gv))
1409 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1411 if (MARK == ORIGMARK) {
1414 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1418 *MARK = SvTIED_obj((SV*)io, mg);
1421 call_method("PRINTF", G_SCALAR);
1424 MARK = ORIGMARK + 1;
1431 if (!(io = GvIO(gv))) {
1432 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1433 report_evil_fh(gv, io, PL_op->op_type);
1434 SETERRNO(EBADF,RMS$_IFI);
1437 else if (!(fp = IoOFP(io))) {
1438 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
1439 /* integrate with report_evil_fh()? */
1443 gv_efullname4(sv, gv, Nullch, FALSE);
1444 name = SvPV_nolen(sv);
1447 Perl_warner(aTHX_ WARN_IO,
1448 "Filehandle %s opened only for input", name);
1450 Perl_warner(aTHX_ WARN_IO,
1451 "Filehandle opened only for input");
1453 else if (ckWARN(WARN_CLOSED))
1454 report_evil_fh(gv, io, PL_op->op_type);
1456 SETERRNO(EBADF,IoIFP(io)?RMS$_FAC:RMS$_IFI);
1460 do_sprintf(sv, SP - MARK, MARK + 1);
1461 if (!do_print(sv, fp))
1464 if (IoFLAGS(io) & IOf_FLUSH)
1465 if (PerlIO_flush(fp) == EOF)
1476 PUSHs(&PL_sv_undef);
1497 /* Need TIEHANDLE method ? */
1499 tmps = SvPV(sv, len);
1500 if (do_open(gv, tmps, len, TRUE, mode, perm, Nullfp)) {
1501 IoLINES(GvIOp(gv)) = 0;
1505 PUSHs(&PL_sv_undef);
1512 dSP; dMARK; dORIGMARK; dTARGET;
1519 Sock_size_t bufsize;
1526 bool charstart = FALSE;
1527 STRLEN charskip = 0;
1531 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1532 && gv && (io = GvIO(gv))
1533 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1538 *MARK = SvTIED_obj((SV*)io, mg);
1540 call_method("READ", G_SCALAR);
1553 sv_setpvn(bufsv, "", 0);
1554 length = SvIVx(*++MARK);
1557 offset = SvIVx(*++MARK);
1561 if (!io || !IoIFP(io))
1563 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
1564 buffer = SvPVutf8_force(bufsv, blen);
1565 /* UTF8 may not have been set if they are all low bytes */
1569 buffer = SvPV_force(bufsv, blen);
1572 DIE(aTHX_ "Negative length");
1580 if (PL_op->op_type == OP_RECV) {
1581 char namebuf[MAXPATHLEN];
1582 #if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE)
1583 bufsize = sizeof (struct sockaddr_in);
1585 bufsize = sizeof namebuf;
1587 #ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1591 buffer = SvGROW(bufsv, length+1);
1592 /* 'offset' means 'flags' here */
1593 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
1594 (struct sockaddr *)namebuf, &bufsize);
1598 /* Bogus return without padding */
1599 bufsize = sizeof (struct sockaddr_in);
1601 SvCUR_set(bufsv, count);
1602 *SvEND(bufsv) = '\0';
1603 (void)SvPOK_only(bufsv);
1607 /* This should not be marked tainted if the fp is marked clean */
1608 if (!(IoFLAGS(io) & IOf_UNTAINT))
1609 SvTAINTED_on(bufsv);
1611 sv_setpvn(TARG, namebuf, bufsize);
1616 if (PL_op->op_type == OP_RECV)
1617 DIE(aTHX_ PL_no_sock_func, "recv");
1619 if (DO_UTF8(bufsv)) {
1620 /* offset adjust in characters not bytes */
1621 blen = sv_len_utf8(bufsv);
1625 DIE(aTHX_ "Offset outside string");
1628 if (DO_UTF8(bufsv)) {
1629 /* convert offset-as-chars to offset-as-bytes */
1630 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
1633 bufsize = SvCUR(bufsv);
1634 buffer = SvGROW(bufsv, length+offset+1);
1635 if (offset > bufsize) { /* Zero any newly allocated space */
1636 Zero(buffer+bufsize, offset-bufsize, char);
1638 buffer = buffer + offset;
1640 if (PL_op->op_type == OP_SYSREAD) {
1641 #ifdef PERL_SOCK_SYSREAD_IS_RECV
1642 if (IoTYPE(io) == IoTYPE_SOCKET) {
1643 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1649 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1654 #ifdef HAS_SOCKET__bad_code_maybe
1655 if (IoTYPE(io) == IoTYPE_SOCKET) {
1656 char namebuf[MAXPATHLEN];
1657 #if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1658 bufsize = sizeof (struct sockaddr_in);
1660 bufsize = sizeof namebuf;
1662 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
1663 (struct sockaddr *)namebuf, &bufsize);
1668 count = PerlIO_read(IoIFP(io), buffer, length);
1669 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1670 if (count == 0 && PerlIO_error(IoIFP(io)))
1674 if ((IoTYPE(io) == IoTYPE_WRONLY) && ckWARN(WARN_IO))
1676 /* integrate with report_evil_fh()? */
1679 SV* sv = sv_newmortal();
1680 gv_efullname4(sv, gv, Nullch, FALSE);
1681 name = SvPV_nolen(sv);
1684 Perl_warner(aTHX_ WARN_IO,
1685 "Filehandle %s opened only for output", name);
1687 Perl_warner(aTHX_ WARN_IO,
1688 "Filehandle opened only for output");
1692 SvCUR_set(bufsv, count+(buffer - SvPVX(bufsv)));
1693 *SvEND(bufsv) = '\0';
1694 (void)SvPOK_only(bufsv);
1695 if (fp_utf8 && !IN_BYTES) {
1696 /* Look at utf8 we got back and count the characters */
1697 char *bend = buffer + count;
1698 while (buffer < bend) {
1700 skip = UTF8SKIP(buffer);
1703 if (buffer - charskip + skip > bend) {
1704 /* partial character - try for rest of it */
1705 length = skip - (bend-buffer);
1706 offset = bend - SvPVX(bufsv);
1718 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1719 provided amount read (count) was what was requested (length)
1721 if (got < wanted && count == length) {
1722 length = wanted - got;
1723 offset = bend - SvPVX(bufsv);
1726 /* return value is character count */
1731 /* This should not be marked tainted if the fp is marked clean */
1732 if (!(IoFLAGS(io) & IOf_UNTAINT))
1733 SvTAINTED_on(bufsv);
1746 int items = (SP - PL_stack_base) - TOPMARK;
1750 sv = sv_2mortal(newSViv(sv_len(*SP)));
1759 dSP; dMARK; dORIGMARK; dTARGET;
1770 if (PL_op->op_type == OP_SYSWRITE
1771 && gv && (io = GvIO(gv))
1772 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1777 *MARK = SvTIED_obj((SV*)io, mg);
1779 call_method("WRITE", G_SCALAR);
1790 #if Size_t_size > IVSIZE
1791 length = (Size_t)SvNVx(*++MARK);
1793 length = (Size_t)SvIVx(*++MARK);
1795 if ((SSize_t)length < 0)
1796 DIE(aTHX_ "Negative length");
1799 if (!io || !IoIFP(io)) {
1801 if (ckWARN(WARN_CLOSED))
1802 report_evil_fh(gv, io, PL_op->op_type);
1806 if (PerlIO_isutf8(IoIFP(io))) {
1807 buffer = SvPVutf8(bufsv, blen);
1811 sv_utf8_downgrade(bufsv, FALSE);
1812 buffer = SvPV(bufsv, blen);
1815 if (PL_op->op_type == OP_SYSWRITE) {
1817 if (DO_UTF8(bufsv)) {
1818 /* length and offset are in chars */
1819 blen = sv_len_utf8(bufsv);
1822 offset = SvIVx(*++MARK);
1825 DIE(aTHX_ "Offset outside string");
1827 } else if (offset >= blen && blen > 0)
1828 DIE(aTHX_ "Offset outside string");
1831 if (length > blen - offset)
1832 length = blen - offset;
1833 if (DO_UTF8(bufsv)) {
1834 buffer = (char*)utf8_hop((U8 *)buffer, offset);
1835 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1838 buffer = buffer+offset;
1840 #ifdef PERL_SOCK_SYSWRITE_IS_SEND
1841 if (IoTYPE(io) == IoTYPE_SOCKET) {
1842 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
1848 /* See the note at doio.c:do_print about filesize limits. --jhi */
1849 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
1854 else if (SP > MARK) {
1857 sockbuf = SvPVx(*++MARK, mlen);
1858 /* length is really flags */
1859 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1860 length, (struct sockaddr *)sockbuf, mlen);
1863 /* length is really flags */
1864 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, length);
1867 DIE(aTHX_ PL_no_sock_func, "send");
1873 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
1874 #if Size_t_size > IVSIZE
1888 return pp_sysread();
1899 if (PL_op->op_flags & OPf_SPECIAL) { /* eof() */
1901 gv = PL_last_in_gv = GvEGV(PL_argvgv);
1903 if (io && !IoIFP(io)) {
1904 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
1906 IoFLAGS(io) &= ~IOf_START;
1907 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, Nullfp);
1908 sv_setpvn(GvSV(gv), "-", 1);
1909 SvSETMAGIC(GvSV(gv));
1911 else if (!nextargv(gv))
1916 gv = PL_last_in_gv; /* eof */
1919 gv = PL_last_in_gv = (GV*)POPs; /* eof(FH) */
1921 if (gv && (io = GvIO(gv))
1922 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1925 XPUSHs(SvTIED_obj((SV*)io, mg));
1928 call_method("EOF", G_SCALAR);
1934 PUSHs(boolSV(!gv || do_eof(gv)));
1948 gv = PL_last_in_gv = (GV*)POPs;
1950 if (gv && (io = GvIO(gv))
1951 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1954 XPUSHs(SvTIED_obj((SV*)io, mg));
1957 call_method("TELL", G_SCALAR);
1963 #if LSEEKSIZE > IVSIZE
1964 PUSHn( do_tell(gv) );
1966 PUSHi( do_tell(gv) );
1973 return pp_sysseek();
1982 #if LSEEKSIZE > IVSIZE
1983 Off_t offset = (Off_t)SvNVx(POPs);
1985 Off_t offset = (Off_t)SvIVx(POPs);
1989 gv = PL_last_in_gv = (GV*)POPs;
1991 if (gv && (io = GvIO(gv))
1992 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1995 XPUSHs(SvTIED_obj((SV*)io, mg));
1996 #if LSEEKSIZE > IVSIZE
1997 XPUSHs(sv_2mortal(newSVnv((NV) offset)));
1999 XPUSHs(sv_2mortal(newSViv(offset)));
2001 XPUSHs(sv_2mortal(newSViv(whence)));
2004 call_method("SEEK", G_SCALAR);
2010 if (PL_op->op_type == OP_SEEK)
2011 PUSHs(boolSV(do_seek(gv, offset, whence)));
2013 Off_t sought = do_sysseek(gv, offset, whence);
2015 PUSHs(&PL_sv_undef);
2018 #if LSEEKSIZE > IVSIZE
2023 : newSVpvn(zero_but_true, ZBTLEN);
2024 PUSHs(sv_2mortal(sv));
2033 /* There seems to be no consensus on the length type of truncate()
2034 * and ftruncate(), both off_t and size_t have supporters. In
2035 * general one would think that when using large files, off_t is
2036 * at least as wide as size_t, so using an off_t should be okay. */
2037 /* XXX Configure probe for the length type of *truncate() needed XXX */
2040 #if Size_t_size > IVSIZE
2045 /* Checking for length < 0 is problematic as the type might or
2046 * might not be signed: if it is not, clever compilers will moan. */
2047 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
2049 #if defined(HAS_TRUNCATE) || defined(HAS_CHSIZE) || defined(F_FREESP)
2055 if (PL_op->op_flags & OPf_SPECIAL) {
2056 tmpgv = gv_fetchpv(POPpx, FALSE, SVt_PVIO);
2059 TAINT_PROPER("truncate");
2060 if (!GvIO(tmpgv) || !IoIFP(GvIOp(tmpgv)))
2063 PerlIO_flush(IoIFP(GvIOp(tmpgv)));
2065 if (ftruncate(PerlIO_fileno(IoIFP(GvIOn(tmpgv))), len) < 0)
2067 if (my_chsize(PerlIO_fileno(IoIFP(GvIOn(tmpgv))), len) < 0)
2076 if (SvTYPE(sv) == SVt_PVGV) {
2077 tmpgv = (GV*)sv; /* *main::FRED for example */
2080 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2081 tmpgv = (GV*) SvRV(sv); /* \*main::FRED for example */
2085 name = SvPV(sv, n_a);
2086 TAINT_PROPER("truncate");
2088 if (truncate(name, len) < 0)
2094 if ((tmpfd = PerlLIO_open(name, O_RDWR)) < 0)
2097 if (my_chsize(tmpfd, len) < 0)
2099 PerlLIO_close(tmpfd);
2108 SETERRNO(EBADF,RMS$_IFI);
2112 DIE(aTHX_ "truncate not implemented");
2125 unsigned int func = POPu;
2126 int optype = PL_op->op_type;
2130 IO *io = gv ? GvIOn(gv) : 0;
2132 if (!io || !argsv || !IoIFP(io)) {
2133 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2134 report_evil_fh(gv, io, PL_op->op_type);
2135 SETERRNO(EBADF,RMS$_IFI); /* well, sort of... */
2139 if (SvPOK(argsv) || !SvNIOK(argsv)) {
2142 s = SvPV_force(argsv, len);
2143 need = IOCPARM_LEN(func);
2145 s = Sv_Grow(argsv, need + 1);
2146 SvCUR_set(argsv, need);
2149 s[SvCUR(argsv)] = 17; /* a little sanity check here */
2152 retval = SvIV(argsv);
2153 s = INT2PTR(char*,retval); /* ouch */
2156 TAINT_PROPER(optype == OP_IOCTL ? "ioctl" : "fcntl");
2158 if (optype == OP_IOCTL)
2160 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
2162 DIE(aTHX_ "ioctl is not implemented");
2166 #if defined(OS2) && defined(__EMX__)
2167 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
2169 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
2172 DIE(aTHX_ "fcntl is not implemented");
2176 if (s[SvCUR(argsv)] != 17)
2177 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
2179 s[SvCUR(argsv)] = 0; /* put our null back */
2180 SvSETMAGIC(argsv); /* Assume it has changed */
2189 PUSHp(zero_but_true, ZBTLEN);
2209 if (gv && (io = GvIO(gv)))
2216 (void)PerlIO_flush(fp);
2217 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
2220 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2221 report_evil_fh(gv, io, PL_op->op_type);
2223 SETERRNO(EBADF,RMS$_IFI);
2228 DIE(aTHX_ PL_no_func, "flock()");
2240 int protocol = POPi;
2246 io = gv ? GvIOn(gv) : NULL;
2249 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2250 report_evil_fh(gv, io, PL_op->op_type);
2252 do_close(gv, FALSE);
2253 SETERRNO(EBADF,LIB$_INVARG);
2258 do_close(gv, FALSE);
2260 TAINT_PROPER("socket");
2261 fd = PerlSock_socket(domain, type, protocol);
2264 IoIFP(io) = PerlIO_fdopen(fd, "r"); /* stdio gets confused about sockets */
2265 IoOFP(io) = PerlIO_fdopen(fd, "w");
2266 IoTYPE(io) = IoTYPE_SOCKET;
2267 if (!IoIFP(io) || !IoOFP(io)) {
2268 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2269 if (IoOFP(io)) PerlIO_close(IoOFP(io));
2270 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
2273 #if defined(HAS_FCNTL) && defined(F_SETFD)
2274 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2278 setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
2283 DIE(aTHX_ PL_no_sock_func, "socket");
2289 #if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
2295 int protocol = POPi;
2302 io1 = gv1 ? GvIOn(gv1) : NULL;
2303 io2 = gv2 ? GvIOn(gv2) : NULL;
2304 if (!gv1 || !gv2 || !io1 || !io2) {
2305 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
2307 report_evil_fh(gv1, io1, PL_op->op_type);
2309 report_evil_fh(gv1, io2, PL_op->op_type);
2312 do_close(gv1, FALSE);
2314 do_close(gv2, FALSE);
2319 do_close(gv1, FALSE);
2321 do_close(gv2, FALSE);
2323 TAINT_PROPER("socketpair");
2324 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
2326 IoIFP(io1) = PerlIO_fdopen(fd[0], "r");
2327 IoOFP(io1) = PerlIO_fdopen(fd[0], "w");
2328 IoTYPE(io1) = IoTYPE_SOCKET;
2329 IoIFP(io2) = PerlIO_fdopen(fd[1], "r");
2330 IoOFP(io2) = PerlIO_fdopen(fd[1], "w");
2331 IoTYPE(io2) = IoTYPE_SOCKET;
2332 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
2333 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2334 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
2335 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
2336 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2337 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
2338 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
2341 #if defined(HAS_FCNTL) && defined(F_SETFD)
2342 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2343 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2348 DIE(aTHX_ PL_no_sock_func, "socketpair");
2356 #ifdef MPE /* Requires PRIV mode to bind() to ports < 1024 */
2357 extern void GETPRIVMODE();
2358 extern void GETUSERMODE();
2363 register IO *io = GvIOn(gv);
2367 int mpeprivmode = 0;
2370 if (!io || !IoIFP(io))
2373 addr = SvPV(addrsv, len);
2374 TAINT_PROPER("bind");
2375 #ifdef MPE /* Deal with MPE bind() peculiarities */
2376 if (((struct sockaddr *)addr)->sa_family == AF_INET) {
2377 /* The address *MUST* stupidly be zero. */
2378 ((struct sockaddr_in *)addr)->sin_addr.s_addr = INADDR_ANY;
2379 /* PRIV mode is required to bind() to ports < 1024. */
2380 if (((struct sockaddr_in *)addr)->sin_port < 1024 &&
2381 ((struct sockaddr_in *)addr)->sin_port > 0) {
2382 GETPRIVMODE(); /* If this fails, we are aborted by MPE/iX. */
2387 if (PerlSock_bind(PerlIO_fileno(IoIFP(io)),
2388 (struct sockaddr *)addr, len) >= 0)
2391 #ifdef MPE /* Switch back to USER mode */
2402 if (ckWARN(WARN_CLOSED))
2403 report_evil_fh(gv, io, PL_op->op_type);
2404 SETERRNO(EBADF,SS$_IVCHAN);
2407 DIE(aTHX_ PL_no_sock_func, "bind");
2418 register IO *io = GvIOn(gv);
2421 if (!io || !IoIFP(io))
2424 addr = SvPV(addrsv, len);
2425 TAINT_PROPER("connect");
2426 if (PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
2432 if (ckWARN(WARN_CLOSED))
2433 report_evil_fh(gv, io, PL_op->op_type);
2434 SETERRNO(EBADF,SS$_IVCHAN);
2437 DIE(aTHX_ PL_no_sock_func, "connect");
2447 register IO *io = gv ? GvIOn(gv) : NULL;
2449 if (!gv || !io || !IoIFP(io))
2452 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
2458 if (ckWARN(WARN_CLOSED))
2459 report_evil_fh(gv, io, PL_op->op_type);
2460 SETERRNO(EBADF,SS$_IVCHAN);
2463 DIE(aTHX_ PL_no_sock_func, "listen");
2475 struct sockaddr saddr; /* use a struct to avoid alignment problems */
2476 Sock_size_t len = sizeof saddr;
2489 if (!gstio || !IoIFP(gstio))
2493 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *)&saddr, &len);
2497 do_close(ngv, FALSE);
2498 IoIFP(nstio) = PerlIO_fdopen(fd, "r");
2499 /* FIXME: we dup(fd) here so that refcounting of fd's does not inhibit
2500 fclose of IoOFP's FILE * - and hence leak memory.
2501 Special treatment of _this_ case of IoIFP != IoOFP seems wrong.
2503 IoOFP(nstio) = PerlIO_fdopen(fd2 = PerlLIO_dup(fd), "w");
2504 IoTYPE(nstio) = IoTYPE_SOCKET;
2505 if (!IoIFP(nstio) || !IoOFP(nstio)) {
2506 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2507 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
2508 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
2511 #if defined(HAS_FCNTL) && defined(F_SETFD)
2512 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2513 fcntl(fd2, F_SETFD, fd2 > PL_maxsysfd); /* ensure close-on-exec */
2517 len = sizeof saddr; /* EPOC somehow truncates info */
2518 setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
2521 PUSHp((char *)&saddr, len);
2525 if (ckWARN(WARN_CLOSED))
2526 report_evil_fh(ggv, ggv ? GvIO(ggv) : 0, PL_op->op_type);
2527 SETERRNO(EBADF,SS$_IVCHAN);
2533 DIE(aTHX_ PL_no_sock_func, "accept");
2543 register IO *io = GvIOn(gv);
2545 if (!io || !IoIFP(io))
2548 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
2552 if (ckWARN(WARN_CLOSED))
2553 report_evil_fh(gv, io, PL_op->op_type);
2554 SETERRNO(EBADF,SS$_IVCHAN);
2557 DIE(aTHX_ PL_no_sock_func, "shutdown");
2564 return pp_ssockopt();
2566 DIE(aTHX_ PL_no_sock_func, "getsockopt");
2574 int optype = PL_op->op_type;
2577 unsigned int optname;
2583 if (optype == OP_GSOCKOPT)
2584 sv = sv_2mortal(NEWSV(22, 257));
2587 optname = (unsigned int) POPi;
2588 lvl = (unsigned int) POPi;
2592 if (!io || !IoIFP(io))
2595 fd = PerlIO_fileno(IoIFP(io));
2599 (void)SvPOK_only(sv);
2603 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
2618 aint = (int)SvIV(sv);
2622 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
2631 if (ckWARN(WARN_CLOSED))
2632 report_evil_fh(gv, io, optype);
2633 SETERRNO(EBADF,SS$_IVCHAN);
2638 DIE(aTHX_ PL_no_sock_func, "setsockopt");
2645 return pp_getpeername();
2647 DIE(aTHX_ PL_no_sock_func, "getsockname");
2655 int optype = PL_op->op_type;
2659 register IO *io = GvIOn(gv);
2662 if (!io || !IoIFP(io))
2665 sv = sv_2mortal(NEWSV(22, 257));
2666 (void)SvPOK_only(sv);
2670 fd = PerlIO_fileno(IoIFP(io));
2672 case OP_GETSOCKNAME:
2673 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2676 case OP_GETPEERNAME:
2677 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2679 #if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2681 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";
2682 /* If the call succeeded, make sure we don't have a zeroed port/addr */
2683 if (((struct sockaddr *)SvPVX(sv))->sa_family == AF_INET &&
2684 !memcmp((char *)SvPVX(sv) + sizeof(u_short), nowhere,
2685 sizeof(u_short) + sizeof(struct in_addr))) {
2692 #ifdef BOGUS_GETNAME_RETURN
2693 /* Interactive Unix, getpeername() and getsockname()
2694 does not return valid namelen */
2695 if (len == BOGUS_GETNAME_RETURN)
2696 len = sizeof(struct sockaddr);
2704 if (ckWARN(WARN_CLOSED))
2705 report_evil_fh(gv, io, optype);
2706 SETERRNO(EBADF,SS$_IVCHAN);
2711 DIE(aTHX_ PL_no_sock_func, "getpeername");
2730 if (PL_op->op_flags & OPf_REF) {
2732 if (PL_op->op_type == OP_LSTAT) {
2733 if (gv != PL_defgv) {
2734 if (ckWARN(WARN_IO))
2735 Perl_warner(aTHX_ WARN_IO,
2736 "lstat() on filehandle %s", GvENAME(gv));
2737 } else if (PL_laststype != OP_LSTAT)
2738 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
2742 if (gv != PL_defgv) {
2743 PL_laststype = OP_STAT;
2745 sv_setpv(PL_statname, "");
2746 PL_laststatval = (GvIO(gv) && IoIFP(GvIOp(gv))
2747 ? PerlLIO_fstat(PerlIO_fileno(IoIFP(GvIOn(gv))), &PL_statcache) : -1);
2749 if (PL_laststatval < 0) {
2750 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2751 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
2757 if (SvTYPE(sv) == SVt_PVGV) {
2761 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2763 if (PL_op->op_type == OP_LSTAT && ckWARN(WARN_IO))
2764 Perl_warner(aTHX_ WARN_IO,
2765 "lstat() on filehandle %s", GvENAME(gv));
2768 sv_setpv(PL_statname, SvPV(sv,n_a));
2771 PL_laststype = PL_op->op_type;
2772 if (PL_op->op_type == OP_LSTAT)
2773 PL_laststatval = PerlLIO_lstat(SvPV(PL_statname, n_a), &PL_statcache);
2776 PL_laststatval = PerlLIO_stat(SvPV(PL_statname, n_a), &PL_statcache);
2777 if (PL_laststatval < 0) {
2778 if (ckWARN(WARN_NEWLINE) && strchr(SvPV(PL_statname, n_a), '\n'))
2779 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "stat");
2785 if (gimme != G_ARRAY) {
2786 if (gimme != G_VOID)
2787 XPUSHs(boolSV(max));
2793 PUSHs(sv_2mortal(newSViv(PL_statcache.st_dev)));
2794 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ino)));
2795 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_mode)));
2796 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_nlink)));
2797 #if Uid_t_size > IVSIZE
2798 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_uid)));
2800 # if Uid_t_sign <= 0
2801 PUSHs(sv_2mortal(newSViv(PL_statcache.st_uid)));
2803 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_uid)));
2806 #if Gid_t_size > IVSIZE
2807 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_gid)));
2809 # if Gid_t_sign <= 0
2810 PUSHs(sv_2mortal(newSViv(PL_statcache.st_gid)));
2812 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_gid)));
2815 #ifdef USE_STAT_RDEV
2816 PUSHs(sv_2mortal(newSViv(PL_statcache.st_rdev)));
2818 PUSHs(sv_2mortal(newSVpvn("", 0)));
2820 #if Off_t_size > IVSIZE
2821 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_size)));
2823 PUSHs(sv_2mortal(newSViv(PL_statcache.st_size)));
2826 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_atime)));
2827 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_mtime)));
2828 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_ctime)));
2830 PUSHs(sv_2mortal(newSViv(PL_statcache.st_atime)));
2831 PUSHs(sv_2mortal(newSViv(PL_statcache.st_mtime)));
2832 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ctime)));
2834 #ifdef USE_STAT_BLOCKS
2835 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blksize)));
2836 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blocks)));
2838 PUSHs(sv_2mortal(newSVpvn("", 0)));
2839 PUSHs(sv_2mortal(newSVpvn("", 0)));
2849 #if defined(HAS_ACCESS) && defined(R_OK)
2851 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2852 result = access(TOPpx, R_OK);
2867 if (cando(S_IRUSR, 0, &PL_statcache))
2876 #if defined(HAS_ACCESS) && defined(W_OK)
2878 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2879 result = access(TOPpx, W_OK);
2894 if (cando(S_IWUSR, 0, &PL_statcache))
2903 #if defined(HAS_ACCESS) && defined(X_OK)
2905 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2906 result = access(TOPpx, X_OK);
2921 if (cando(S_IXUSR, 0, &PL_statcache))
2930 #ifdef PERL_EFF_ACCESS_R_OK
2932 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2933 result = PERL_EFF_ACCESS_R_OK(TOPpx);
2948 if (cando(S_IRUSR, 1, &PL_statcache))
2957 #ifdef PERL_EFF_ACCESS_W_OK
2959 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2960 result = PERL_EFF_ACCESS_W_OK(TOPpx);
2975 if (cando(S_IWUSR, 1, &PL_statcache))
2984 #ifdef PERL_EFF_ACCESS_X_OK
2986 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2987 result = PERL_EFF_ACCESS_X_OK(TOPpx);
3002 if (cando(S_IXUSR, 1, &PL_statcache))
3009 I32 result = my_stat();
3018 return pp_ftrowned();
3023 I32 result = my_stat();
3027 if (PL_statcache.st_uid == (PL_op->op_type == OP_FTEOWNED ?
3035 I32 result = my_stat();
3039 if (PL_statcache.st_size == 0)
3046 I32 result = my_stat();
3050 #if Off_t_size > IVSIZE
3051 PUSHn(PL_statcache.st_size);
3053 PUSHi(PL_statcache.st_size);
3060 I32 result = my_stat();
3064 PUSHn( (PL_basetime - PL_statcache.st_mtime) / 86400.0 );
3070 I32 result = my_stat();
3074 PUSHn( (PL_basetime - PL_statcache.st_atime) / 86400.0 );
3080 I32 result = my_stat();
3084 PUSHn( (PL_basetime - PL_statcache.st_ctime) / 86400.0 );
3090 I32 result = my_stat();
3094 if (S_ISSOCK(PL_statcache.st_mode))
3101 I32 result = my_stat();
3105 if (S_ISCHR(PL_statcache.st_mode))
3112 I32 result = my_stat();
3116 if (S_ISBLK(PL_statcache.st_mode))
3123 I32 result = my_stat();
3127 if (S_ISREG(PL_statcache.st_mode))
3134 I32 result = my_stat();
3138 if (S_ISDIR(PL_statcache.st_mode))
3145 I32 result = my_stat();
3149 if (S_ISFIFO(PL_statcache.st_mode))
3156 I32 result = my_lstat();
3160 if (S_ISLNK(PL_statcache.st_mode))
3169 I32 result = my_stat();
3173 if (PL_statcache.st_mode & S_ISUID)
3183 I32 result = my_stat();
3187 if (PL_statcache.st_mode & S_ISGID)
3197 I32 result = my_stat();
3201 if (PL_statcache.st_mode & S_ISVTX)
3212 char *tmps = Nullch;
3215 if (PL_op->op_flags & OPf_REF)
3217 else if (isGV(TOPs))
3219 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3220 gv = (GV*)SvRV(POPs);
3222 gv = gv_fetchpv(tmps = POPpx, FALSE, SVt_PVIO);
3224 if (GvIO(gv) && IoIFP(GvIOp(gv)))
3225 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
3226 else if (tmps && isDIGIT(*tmps))
3230 if (PerlLIO_isatty(fd))
3235 #if defined(atarist) /* this will work with atariST. Configure will
3236 make guesses for other systems. */
3237 # define FILE_base(f) ((f)->_base)
3238 # define FILE_ptr(f) ((f)->_ptr)
3239 # define FILE_cnt(f) ((f)->_cnt)
3240 # define FILE_bufsiz(f) ((f)->_cnt + ((f)->_ptr - (f)->_base))
3250 register STDCHAR *s;
3257 if (PL_op->op_flags & OPf_REF)
3259 else if (isGV(TOPs))
3261 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3262 gv = (GV*)SvRV(POPs);
3268 if (gv == PL_defgv) {
3270 io = GvIO(PL_statgv);
3273 goto really_filename;
3278 PL_laststatval = -1;
3279 sv_setpv(PL_statname, "");
3280 io = GvIO(PL_statgv);
3282 if (io && IoIFP(io)) {
3283 if (! PerlIO_has_base(IoIFP(io)))
3284 DIE(aTHX_ "-T and -B not implemented on filehandles");
3285 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3286 if (PL_laststatval < 0)
3288 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
3289 if (PL_op->op_type == OP_FTTEXT)
3294 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
3295 i = PerlIO_getc(IoIFP(io));
3297 (void)PerlIO_ungetc(IoIFP(io),i);
3299 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
3301 len = PerlIO_get_bufsiz(IoIFP(io));
3302 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
3303 /* sfio can have large buffers - limit to 512 */
3308 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
3310 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
3312 SETERRNO(EBADF,RMS$_IFI);
3320 PL_laststatval = -1;
3321 PL_laststype = OP_STAT;
3322 sv_setpv(PL_statname, SvPV(sv, n_a));
3323 if (!(fp = PerlIO_open(SvPVX(PL_statname), "r"))) {
3324 if (ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
3325 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "open");
3328 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(fp), &PL_statcache);
3329 if (PL_laststatval < 0) {
3330 (void)PerlIO_close(fp);
3333 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, Nullch);
3334 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3335 (void)PerlIO_close(fp);
3337 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
3338 RETPUSHNO; /* special case NFS directories */
3339 RETPUSHYES; /* null file is anything */
3344 /* now scan s to look for textiness */
3345 /* XXX ASCII dependent code */
3347 #if defined(DOSISH) || defined(USEMYBINMODE)
3348 /* ignore trailing ^Z on short files */
3349 if (len && len < sizeof(tbuf) && tbuf[len-1] == 26)
3353 for (i = 0; i < len; i++, s++) {
3354 if (!*s) { /* null never allowed in text */
3359 else if (!(isPRINT(*s) || isSPACE(*s)))
3362 else if (*s & 128) {
3364 if (IN_LOCALE_RUNTIME && isALPHA_LC(*s))
3367 /* utf8 characters don't count as odd */
3368 if (UTF8_IS_START(*s)) {
3369 int ulen = UTF8SKIP(s);
3370 if (ulen < len - i) {
3372 for (j = 1; j < ulen; j++) {
3373 if (!UTF8_IS_CONTINUATION(s[j]))
3376 --ulen; /* loop does extra increment */
3386 *s != '\n' && *s != '\r' && *s != '\b' &&
3387 *s != '\t' && *s != '\f' && *s != 27)
3392 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
3417 if( !tmps || !*tmps ) {
3418 if ( (svp = hv_fetch(GvHVn(PL_envgv), "HOME", 4, FALSE))
3419 || (svp = hv_fetch(GvHVn(PL_envgv), "LOGDIR", 6, FALSE))
3421 || (svp = hv_fetch(GvHVn(PL_envgv), "SYS$LOGIN", 9, FALSE))
3426 deprecate_old("chdir('') or chdir(undef) as chdir()");
3427 tmps = SvPV(*svp, n_a);
3431 TAINT_PROPER("chdir");
3436 TAINT_PROPER("chdir");
3437 PUSHi( PerlDir_chdir(tmps) >= 0 );
3439 /* Clear the DEFAULT element of ENV so we'll get the new value
3441 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
3449 dSP; dMARK; dTARGET;
3450 I32 value = (I32)apply(PL_op->op_type, MARK, SP);
3456 DIE(aTHX_ PL_no_func, "chown");
3466 TAINT_PROPER("chroot");
3467 PUSHi( chroot(tmps) >= 0 );
3470 DIE(aTHX_ PL_no_func, "chroot");
3476 dSP; dMARK; dTARGET;
3478 value = (I32)apply(PL_op->op_type, MARK, SP);
3486 dSP; dMARK; dTARGET;
3488 value = (I32)apply(PL_op->op_type, MARK, SP);
3496 dSP; dMARK; dTARGET;
3498 value = (I32)apply(PL_op->op_type, MARK, SP);
3510 char *tmps2 = POPpx;
3511 char *tmps = SvPV(TOPs, n_a);
3512 TAINT_PROPER("rename");
3514 anum = PerlLIO_rename(tmps, tmps2);
3516 if (!(anum = PerlLIO_stat(tmps, &PL_statbuf))) {
3517 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3520 if (PL_euid || PerlLIO_stat(tmps2, &PL_statbuf) < 0 || !S_ISDIR(PL_statbuf.st_mode))
3521 (void)UNLINK(tmps2);
3522 if (!(anum = link(tmps, tmps2)))
3523 anum = UNLINK(tmps);
3536 char *tmps2 = POPpx;
3537 char *tmps = SvPV(TOPs, n_a);
3538 TAINT_PROPER("link");
3539 SETi( PerlLIO_link(tmps, tmps2) >= 0 );
3542 DIE(aTHX_ PL_no_func, "link");
3551 char *tmps2 = POPpx;
3552 char *tmps = SvPV(TOPs, n_a);
3553 TAINT_PROPER("symlink");
3554 SETi( symlink(tmps, tmps2) >= 0 );
3557 DIE(aTHX_ PL_no_func, "symlink");
3567 char buf[MAXPATHLEN];
3571 #ifndef INCOMPLETE_TAINTS
3575 len = readlink(tmps, buf, sizeof(buf) - 1);
3583 RETSETUNDEF; /* just pretend it's a normal file */
3587 #if !defined(HAS_MKDIR) || !defined(HAS_RMDIR)
3589 S_dooneliner(pTHX_ char *cmd, char *filename)
3591 char *save_filename = filename;
3597 New(666, cmdline, strlen(cmd) + (strlen(filename) * 2) + 10, char);
3598 strcpy(cmdline, cmd);
3599 strcat(cmdline, " ");
3600 for (s = cmdline + strlen(cmdline); *filename; ) {
3605 myfp = PerlProc_popen(cmdline, "r");
3609 SV *tmpsv = sv_newmortal();
3610 /* Need to save/restore 'PL_rs' ?? */
3611 s = sv_gets(tmpsv, myfp, 0);
3612 (void)PerlProc_pclose(myfp);
3616 #ifdef HAS_SYS_ERRLIST
3621 /* you don't see this */
3623 #ifdef HAS_SYS_ERRLIST
3631 if (instr(s, errmsg)) {
3638 #define EACCES EPERM
3640 if (instr(s, "cannot make"))
3641 SETERRNO(EEXIST,RMS$_FEX);
3642 else if (instr(s, "existing file"))
3643 SETERRNO(EEXIST,RMS$_FEX);
3644 else if (instr(s, "ile exists"))
3645 SETERRNO(EEXIST,RMS$_FEX);
3646 else if (instr(s, "non-exist"))
3647 SETERRNO(ENOENT,RMS$_FNF);
3648 else if (instr(s, "does not exist"))
3649 SETERRNO(ENOENT,RMS$_FNF);
3650 else if (instr(s, "not empty"))
3651 SETERRNO(EBUSY,SS$_DEVOFFLINE);
3652 else if (instr(s, "cannot access"))
3653 SETERRNO(EACCES,RMS$_PRV);
3655 SETERRNO(EPERM,RMS$_PRV);
3658 else { /* some mkdirs return no failure indication */
3659 anum = (PerlLIO_stat(save_filename, &PL_statbuf) >= 0);
3660 if (PL_op->op_type == OP_RMDIR)
3665 SETERRNO(EACCES,RMS$_PRV); /* a guess */
3690 tmps = SvPV(TOPs, len);
3691 /* Different operating and file systems take differently to
3692 * trailing slashes. According to POSIX 1003.1 1996 Edition
3693 * any number of trailing slashes should be allowed.
3694 * Thusly we snip them away so that even non-conforming
3695 * systems are happy. */
3696 /* We should probably do this "filtering" for all
3697 * the functions that expect (potentially) directory names:
3698 * -d, chdir(), chmod(), chown(), chroot(), fcntl()?,
3699 * (mkdir()), opendir(), rename(), rmdir(), stat(). --jhi */
3700 if (len > 1 && tmps[len-1] == '/') {
3701 while (tmps[len] == '/' && len > 1)
3703 tmps = savepvn(tmps, len);
3707 TAINT_PROPER("mkdir");
3709 SETi( PerlDir_mkdir(tmps, mode) >= 0 );
3711 SETi( dooneliner("mkdir", tmps) );
3712 oldumask = PerlLIO_umask(0);
3713 PerlLIO_umask(oldumask);
3714 PerlLIO_chmod(tmps, (mode & ~oldumask) & 0777);
3728 TAINT_PROPER("rmdir");
3730 XPUSHi( PerlDir_rmdir(tmps) >= 0 );
3732 XPUSHi( dooneliner("rmdir", tmps) );
3737 /* Directory calls. */
3741 #if defined(Direntry_t) && defined(HAS_READDIR)
3744 char *dirname = POPpx;
3746 register IO *io = GvIOn(gv);
3752 PerlDir_close(IoDIRP(io));
3753 if (!(IoDIRP(io) = PerlDir_open(dirname)))
3759 SETERRNO(EBADF,RMS$_DIR);
3762 DIE(aTHX_ PL_no_dir_func, "opendir");
3768 #if defined(Direntry_t) && defined(HAS_READDIR)
3770 #if !defined(I_DIRENT) && !defined(VMS)
3771 Direntry_t *readdir (DIR *);
3773 register Direntry_t *dp;
3775 register IO *io = GvIOn(gv);
3778 if (!io || !IoDIRP(io))
3781 if (GIMME == G_ARRAY) {
3783 while ((dp = (Direntry_t *)PerlDir_read(IoDIRP(io)))) {
3785 sv = newSVpvn(dp->d_name, dp->d_namlen);
3787 sv = newSVpv(dp->d_name, 0);
3789 #ifndef INCOMPLETE_TAINTS
3790 if (!(IoFLAGS(io) & IOf_UNTAINT))
3793 XPUSHs(sv_2mortal(sv));
3797 if (!(dp = (Direntry_t *)PerlDir_read(IoDIRP(io))))
3800 sv = newSVpvn(dp->d_name, dp->d_namlen);
3802 sv = newSVpv(dp->d_name, 0);
3804 #ifndef INCOMPLETE_TAINTS
3805 if (!(IoFLAGS(io) & IOf_UNTAINT))
3808 XPUSHs(sv_2mortal(sv));
3814 SETERRNO(EBADF,RMS$_ISI);
3815 if (GIMME == G_ARRAY)
3820 DIE(aTHX_ PL_no_dir_func, "readdir");
3826 #if defined(HAS_TELLDIR) || defined(telldir)
3828 /* XXX does _anyone_ need this? --AD 2/20/1998 */
3829 /* XXX netbsd still seemed to.
3830 XXX HAS_TELLDIR_PROTO is new style, NEED_TELLDIR_PROTO is old style.
3831 --JHI 1999-Feb-02 */
3832 # if !defined(HAS_TELLDIR_PROTO) || defined(NEED_TELLDIR_PROTO)
3833 long telldir (DIR *);
3836 register IO *io = GvIOn(gv);
3838 if (!io || !IoDIRP(io))
3841 PUSHi( PerlDir_tell(IoDIRP(io)) );
3845 SETERRNO(EBADF,RMS$_ISI);
3848 DIE(aTHX_ PL_no_dir_func, "telldir");
3854 #if defined(HAS_SEEKDIR) || defined(seekdir)
3858 register IO *io = GvIOn(gv);
3860 if (!io || !IoDIRP(io))
3863 (void)PerlDir_seek(IoDIRP(io), along);
3868 SETERRNO(EBADF,RMS$_ISI);
3871 DIE(aTHX_ PL_no_dir_func, "seekdir");
3877 #if defined(HAS_REWINDDIR) || defined(rewinddir)
3880 register IO *io = GvIOn(gv);
3882 if (!io || !IoDIRP(io))
3885 (void)PerlDir_rewind(IoDIRP(io));
3889 SETERRNO(EBADF,RMS$_ISI);
3892 DIE(aTHX_ PL_no_dir_func, "rewinddir");
3898 #if defined(Direntry_t) && defined(HAS_READDIR)
3901 register IO *io = GvIOn(gv);
3903 if (!io || !IoDIRP(io))
3906 #ifdef VOID_CLOSEDIR
3907 PerlDir_close(IoDIRP(io));
3909 if (PerlDir_close(IoDIRP(io)) < 0) {
3910 IoDIRP(io) = 0; /* Don't try to close again--coredumps on SysV */
3919 SETERRNO(EBADF,RMS$_IFI);
3922 DIE(aTHX_ PL_no_dir_func, "closedir");
3926 /* Process control. */
3936 PERL_FLUSHALL_FOR_CHILD;
3937 childpid = PerlProc_fork();
3942 if ((tmpgv = gv_fetchpv("$", TRUE, SVt_PV))) {
3943 SvREADONLY_off(GvSV(tmpgv));
3944 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3945 SvREADONLY_on(GvSV(tmpgv));
3947 hv_clear(PL_pidstatus); /* no kids, so don't wait for 'em */
3952 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
3957 PERL_FLUSHALL_FOR_CHILD;
3958 childpid = PerlProc_fork();
3964 DIE(aTHX_ PL_no_func, "fork");
3971 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
3976 #ifdef PERL_OLD_SIGNALS
3977 childpid = wait4pid(-1, &argflags, 0);
3979 while ((childpid = wait4pid(-1, &argflags, 0)) == -1 && errno == EINTR) {
3983 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
3984 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
3985 STATUS_NATIVE_SET((childpid && childpid != -1) ? argflags : -1);
3987 STATUS_NATIVE_SET((childpid > 0) ? argflags : -1);
3992 DIE(aTHX_ PL_no_func, "wait");
3998 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
4006 #ifdef PERL_OLD_SIGNALS
4007 childpid = wait4pid(childpid, &argflags, optype);
4009 while ((childpid = wait4pid(childpid, &argflags, optype)) == -1 && errno == EINTR) {
4013 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4014 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
4015 STATUS_NATIVE_SET((childpid && childpid != -1) ? argflags : -1);
4017 STATUS_NATIVE_SET((childpid > 0) ? argflags : -1);
4022 DIE(aTHX_ PL_no_func, "waitpid");
4028 dSP; dMARK; dORIGMARK; dTARGET;
4037 while (++MARK <= SP) {
4038 (void)SvPV_nolen(*MARK); /* stringify for taint check */
4043 /* XXX Remove warning at end of deprecation cycle --RD 2002-02 */
4044 if (SP - MARK == 1) {
4045 TAINT_PROPER("system");
4047 else if (ckWARN2(WARN_TAINT, WARN_DEPRECATED)) {
4048 Perl_warner(aTHX_ packWARN2(WARN_TAINT, WARN_DEPRECATED),
4049 "Use of tainted arguments in %s is deprecated", "system");
4052 PERL_FLUSHALL_FOR_CHILD;
4053 #if (defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(OS2) || defined(PERL_MICRO)
4057 Sigsave_t ihand,qhand; /* place to save signals during system() */
4059 if (PerlProc_pipe(pp) >= 0)
4061 while ((childpid = PerlProc_fork()) == -1) {
4062 if (errno != EAGAIN) {
4067 PerlLIO_close(pp[0]);
4068 PerlLIO_close(pp[1]);
4076 PerlLIO_close(pp[1]);
4078 rsignal_save(SIGINT, SIG_IGN, &ihand);
4079 rsignal_save(SIGQUIT, SIG_IGN, &qhand);
4082 result = wait4pid(childpid, &status, 0);
4083 } while (result == -1 && errno == EINTR);
4085 (void)rsignal_restore(SIGINT, &ihand);
4086 (void)rsignal_restore(SIGQUIT, &qhand);
4088 STATUS_NATIVE_SET(result == -1 ? -1 : status);
4089 do_execfree(); /* free any memory child malloced on fork */
4095 while (n < sizeof(int)) {
4096 n1 = PerlLIO_read(pp[0],
4097 (void*)(((char*)&errkid)+n),
4103 PerlLIO_close(pp[0]);
4104 if (n) { /* Error */
4105 if (n != sizeof(int))
4106 DIE(aTHX_ "panic: kid popen errno read");
4107 errno = errkid; /* Propagate errno from kid */
4108 STATUS_CURRENT = -1;
4111 PUSHi(STATUS_CURRENT);
4115 PerlLIO_close(pp[0]);
4116 #if defined(HAS_FCNTL) && defined(F_SETFD)
4117 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
4121 if (PL_op->op_flags & OPf_STACKED) {
4122 SV *really = *++MARK;
4123 value = (I32)do_aexec5(really, MARK, SP, pp[1], did_pipes);
4125 else if (SP - MARK != 1)
4126 value = (I32)do_aexec5(Nullsv, MARK, SP, pp[1], did_pipes);
4128 value = (I32)do_exec3(SvPVx(sv_mortalcopy(*SP), n_a), pp[1], did_pipes);
4131 #else /* ! FORK or VMS or OS/2 */
4134 if (PL_op->op_flags & OPf_STACKED) {
4135 SV *really = *++MARK;
4136 value = (I32)do_aspawn(really, (void **)MARK, (void **)SP);
4138 else if (SP - MARK != 1)
4139 value = (I32)do_aspawn(Nullsv, (void **)MARK, (void **)SP);
4141 value = (I32)do_spawn(SvPVx(sv_mortalcopy(*SP), n_a));
4143 if (PL_statusvalue == -1) /* hint that value must be returned as is */
4145 STATUS_NATIVE_SET(value);
4148 PUSHi(result ? value : STATUS_CURRENT);
4149 #endif /* !FORK or VMS */
4155 dSP; dMARK; dORIGMARK; dTARGET;
4161 while (++MARK <= SP) {
4162 (void)SvPV_nolen(*MARK); /* stringify for taint check */
4167 /* XXX Remove warning at end of deprecation cycle --RD 2002-02 */
4168 if (SP - MARK == 1) {
4169 TAINT_PROPER("exec");
4171 else if (ckWARN2(WARN_TAINT, WARN_DEPRECATED)) {
4172 Perl_warner(aTHX_ packWARN2(WARN_TAINT, WARN_DEPRECATED),
4173 "Use of tainted arguments in %s is deprecated", "exec");
4176 PERL_FLUSHALL_FOR_CHILD;
4177 if (PL_op->op_flags & OPf_STACKED) {
4178 SV *really = *++MARK;
4179 value = (I32)do_aexec(really, MARK, SP);
4181 else if (SP - MARK != 1)
4183 value = (I32)vms_do_aexec(Nullsv, MARK, SP);
4187 (void ) do_aspawn(Nullsv, MARK, SP);
4191 value = (I32)do_aexec(Nullsv, MARK, SP);
4196 value = (I32)vms_do_exec(SvPVx(sv_mortalcopy(*SP), n_a));
4199 (void) do_spawn(SvPVx(sv_mortalcopy(*SP), n_a));
4202 value = (I32)do_exec(SvPVx(sv_mortalcopy(*SP), n_a));
4215 dSP; dMARK; dTARGET;
4217 value = (I32)apply(PL_op->op_type, MARK, SP);
4222 DIE(aTHX_ PL_no_func, "kill");
4230 XPUSHi( getppid() );
4233 DIE(aTHX_ PL_no_func, "getppid");
4249 pgrp = (I32)BSD_GETPGRP(pid);
4251 if (pid != 0 && pid != PerlProc_getpid())
4252 DIE(aTHX_ "POSIX getpgrp can't take an argument");
4258 DIE(aTHX_ PL_no_func, "getpgrp()");
4277 TAINT_PROPER("setpgrp");
4279 SETi( BSD_SETPGRP(pid, pgrp) >= 0 );
4281 if ((pgrp != 0 && pgrp != PerlProc_getpid())
4282 || (pid != 0 && pid != PerlProc_getpid()))
4284 DIE(aTHX_ "setpgrp can't take arguments");
4286 SETi( setpgrp() >= 0 );
4287 #endif /* USE_BSDPGRP */
4290 DIE(aTHX_ PL_no_func, "setpgrp()");
4296 #ifdef HAS_GETPRIORITY
4300 SETi( getpriority(which, who) );
4303 DIE(aTHX_ PL_no_func, "getpriority()");
4309 #ifdef HAS_SETPRIORITY
4314 TAINT_PROPER("setpriority");
4315 SETi( setpriority(which, who, niceval) >= 0 );
4318 DIE(aTHX_ PL_no_func, "setpriority()");
4328 XPUSHn( time(Null(Time_t*)) );
4330 XPUSHi( time(Null(Time_t*)) );
4335 /* XXX The POSIX name is CLK_TCK; it is to be preferred
4336 to HZ. Probably. For now, assume that if the system
4337 defines HZ, it does so correctly. (Will this break
4339 Probably we ought to use _sysconf(_SC_CLK_TCK), if
4340 it's supported. --AD 9/96.
4361 (void)PerlProc_times(&PL_timesbuf);
4363 (void)PerlProc_times((tbuffer_t *)&PL_timesbuf); /* time.h uses different name for */
4364 /* struct tms, though same data */
4368 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_utime)/HZ)));
4369 if (GIMME == G_ARRAY) {
4370 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_stime)/HZ)));
4371 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_cutime)/HZ)));
4372 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_cstime)/HZ)));
4376 DIE(aTHX_ "times not implemented");
4377 #endif /* HAS_TIMES */
4390 static char *dayname[] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
4391 static char *monname[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
4392 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
4398 when = (Time_t)SvNVx(POPs);
4400 when = (Time_t)SvIVx(POPs);
4403 if (PL_op->op_type == OP_LOCALTIME)
4404 tmbuf = localtime(&when);
4406 tmbuf = gmtime(&when);
4408 if (GIMME != G_ARRAY) {
4414 tsv = Perl_newSVpvf(aTHX_ "%s %s %2d %02d:%02d:%02d %d",
4415 dayname[tmbuf->tm_wday],
4416 monname[tmbuf->tm_mon],
4421 tmbuf->tm_year + 1900);
4422 PUSHs(sv_2mortal(tsv));
4427 PUSHs(sv_2mortal(newSViv(tmbuf->tm_sec)));
4428 PUSHs(sv_2mortal(newSViv(tmbuf->tm_min)));
4429 PUSHs(sv_2mortal(newSViv(tmbuf->tm_hour)));
4430 PUSHs(sv_2mortal(newSViv(tmbuf->tm_mday)));
4431 PUSHs(sv_2mortal(newSViv(tmbuf->tm_mon)));
4432 PUSHs(sv_2mortal(newSViv(tmbuf->tm_year)));
4433 PUSHs(sv_2mortal(newSViv(tmbuf->tm_wday)));
4434 PUSHs(sv_2mortal(newSViv(tmbuf->tm_yday)));
4435 PUSHs(sv_2mortal(newSViv(tmbuf->tm_isdst)));
4446 anum = alarm((unsigned int)anum);
4453 DIE(aTHX_ PL_no_func, "alarm");
4464 (void)time(&lasttime);
4469 PerlProc_sleep((unsigned int)duration);
4472 XPUSHi(when - lasttime);
4476 /* Shared memory. */
4490 return pp_shmwrite();
4495 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4496 dSP; dMARK; dTARGET;
4497 I32 value = (I32)(do_shmio(PL_op->op_type, MARK, SP) >= 0);
4506 /* Message passing. */
4520 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4521 dSP; dMARK; dTARGET;
4522 I32 value = (I32)(do_msgsnd(MARK, SP) >= 0);
4533 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4534 dSP; dMARK; dTARGET;
4535 I32 value = (I32)(do_msgrcv(MARK, SP) >= 0);
4548 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4549 dSP; dMARK; dTARGET;
4550 int anum = do_ipcget(PL_op->op_type, MARK, SP);
4557 DIE(aTHX_ "System V IPC is not implemented on this machine");
4563 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4564 dSP; dMARK; dTARGET;
4565 int anum = do_ipcctl(PL_op->op_type, MARK, SP);
4573 PUSHp(zero_but_true, ZBTLEN);
4583 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4584 dSP; dMARK; dTARGET;
4585 I32 value = (I32)(do_semop(MARK, SP) >= 0);
4594 /* Get system info. */
4598 #ifdef HAS_GETHOSTBYNAME
4599 return pp_ghostent();
4601 DIE(aTHX_ PL_no_sock_func, "gethostbyname");
4607 #ifdef HAS_GETHOSTBYADDR
4608 return pp_ghostent();
4610 DIE(aTHX_ PL_no_sock_func, "gethostbyaddr");
4616 #if defined(HAS_GETHOSTBYNAME) || defined(HAS_GETHOSTBYADDR) || defined(HAS_GETHOSTENT)
4618 I32 which = PL_op->op_type;
4619 register char **elem;
4621 #ifndef HAS_GETHOST_PROTOS /* XXX Do we need individual probes? */
4622 struct hostent *PerlSock_gethostbyaddr(Netdb_host_t, Netdb_hlen_t, int);
4623 struct hostent *PerlSock_gethostbyname(Netdb_name_t);
4624 struct hostent *PerlSock_gethostent(void);
4626 struct hostent *hent;
4631 if (which == OP_GHBYNAME)
4632 #ifdef HAS_GETHOSTBYNAME
4633 hent = PerlSock_gethostbyname(POPpbytex);
4635 DIE(aTHX_ PL_no_sock_func, "gethostbyname");
4637 else if (which == OP_GHBYADDR) {
4638 #ifdef HAS_GETHOSTBYADDR
4639 int addrtype = POPi;
4642 Netdb_host_t addr = (Netdb_host_t) SvPVbyte(addrsv, addrlen);
4644 hent = PerlSock_gethostbyaddr(addr, (Netdb_hlen_t) addrlen, addrtype);
4646 DIE(aTHX_ PL_no_sock_func, "gethostbyaddr");
4650 #ifdef HAS_GETHOSTENT
4651 hent = PerlSock_gethostent();
4653 DIE(aTHX_ PL_no_sock_func, "gethostent");
4656 #ifdef HOST_NOT_FOUND
4658 STATUS_NATIVE_SET(h_errno);
4661 if (GIMME != G_ARRAY) {
4662 PUSHs(sv = sv_newmortal());
4664 if (which == OP_GHBYNAME) {
4666 sv_setpvn(sv, hent->h_addr, hent->h_length);
4669 sv_setpv(sv, (char*)hent->h_name);
4675 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4676 sv_setpv(sv, (char*)hent->h_name);
4677 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4678 for (elem = hent->h_aliases; elem && *elem; elem++) {
4679 sv_catpv(sv, *elem);
4681 sv_catpvn(sv, " ", 1);
4683 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4684 sv_setiv(sv, (IV)hent->h_addrtype);
4685 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4686 len = hent->h_length;
4687 sv_setiv(sv, (IV)len);
4689 for (elem = hent->h_addr_list; elem && *elem; elem++) {
4690 XPUSHs(sv = sv_mortalcopy(&PL_sv_no));
4691 sv_setpvn(sv, *elem, len);
4694 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4696 sv_setpvn(sv, hent->h_addr, len);
4701 DIE(aTHX_ PL_no_sock_func, "gethostent");
4707 #ifdef HAS_GETNETBYNAME
4708 return pp_gnetent();
4710 DIE(aTHX_ PL_no_sock_func, "getnetbyname");
4716 #ifdef HAS_GETNETBYADDR
4717 return pp_gnetent();
4719 DIE(aTHX_ PL_no_sock_func, "getnetbyaddr");
4725 #if defined(HAS_GETNETBYNAME) || defined(HAS_GETNETBYADDR) || defined(HAS_GETNETENT)
4727 I32 which = PL_op->op_type;
4728 register char **elem;
4730 #ifndef HAS_GETNET_PROTOS /* XXX Do we need individual probes? */
4731 struct netent *PerlSock_getnetbyaddr(Netdb_net_t, int);
4732 struct netent *PerlSock_getnetbyname(Netdb_name_t);
4733 struct netent *PerlSock_getnetent(void);
4735 struct netent *nent;
4738 if (which == OP_GNBYNAME)
4739 #ifdef HAS_GETNETBYNAME
4740 nent = PerlSock_getnetbyname(POPpbytex);
4742 DIE(aTHX_ PL_no_sock_func, "getnetbyname");
4744 else if (which == OP_GNBYADDR) {
4745 #ifdef HAS_GETNETBYADDR
4746 int addrtype = POPi;
4747 Netdb_net_t addr = (Netdb_net_t) (U32)POPu;
4748 nent = PerlSock_getnetbyaddr(addr, addrtype);
4750 DIE(aTHX_ PL_no_sock_func, "getnetbyaddr");
4754 #ifdef HAS_GETNETENT
4755 nent = PerlSock_getnetent();
4757 DIE(aTHX_ PL_no_sock_func, "getnetent");
4761 if (GIMME != G_ARRAY) {
4762 PUSHs(sv = sv_newmortal());
4764 if (which == OP_GNBYNAME)
4765 sv_setiv(sv, (IV)nent->n_net);
4767 sv_setpv(sv, nent->n_name);
4773 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4774 sv_setpv(sv, nent->n_name);
4775 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4776 for (elem = nent->n_aliases; elem && *elem; elem++) {
4777 sv_catpv(sv, *elem);
4779 sv_catpvn(sv, " ", 1);
4781 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4782 sv_setiv(sv, (IV)nent->n_addrtype);
4783 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4784 sv_setiv(sv, (IV)nent->n_net);
4789 DIE(aTHX_ PL_no_sock_func, "getnetent");
4795 #ifdef HAS_GETPROTOBYNAME
4796 return pp_gprotoent();
4798 DIE(aTHX_ PL_no_sock_func, "getprotobyname");
4804 #ifdef HAS_GETPROTOBYNUMBER
4805 return pp_gprotoent();
4807 DIE(aTHX_ PL_no_sock_func, "getprotobynumber");
4813 #if defined(HAS_GETPROTOBYNAME) || defined(HAS_GETPROTOBYNUMBER) || defined(HAS_GETPROTOENT)
4815 I32 which = PL_op->op_type;
4816 register char **elem;
4818 #ifndef HAS_GETPROTO_PROTOS /* XXX Do we need individual probes? */
4819 struct protoent *PerlSock_getprotobyname(Netdb_name_t);
4820 struct protoent *PerlSock_getprotobynumber(int);
4821 struct protoent *PerlSock_getprotoent(void);
4823 struct protoent *pent;
4826 if (which == OP_GPBYNAME)
4827 #ifdef HAS_GETPROTOBYNAME
4828 pent = PerlSock_getprotobyname(POPpbytex);
4830 DIE(aTHX_ PL_no_sock_func, "getprotobyname");
4832 else if (which == OP_GPBYNUMBER)
4833 #ifdef HAS_GETPROTOBYNUMBER
4834 pent = PerlSock_getprotobynumber(POPi);
4836 DIE(aTHX_ PL_no_sock_func, "getprotobynumber");
4839 #ifdef HAS_GETPROTOENT
4840 pent = PerlSock_getprotoent();
4842 DIE(aTHX_ PL_no_sock_func, "getprotoent");
4846 if (GIMME != G_ARRAY) {
4847 PUSHs(sv = sv_newmortal());
4849 if (which == OP_GPBYNAME)
4850 sv_setiv(sv, (IV)pent->p_proto);
4852 sv_setpv(sv, pent->p_name);
4858 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4859 sv_setpv(sv, pent->p_name);
4860 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4861 for (elem = pent->p_aliases; elem && *elem; elem++) {
4862 sv_catpv(sv, *elem);
4864 sv_catpvn(sv, " ", 1);
4866 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4867 sv_setiv(sv, (IV)pent->p_proto);
4872 DIE(aTHX_ PL_no_sock_func, "getprotoent");
4878 #ifdef HAS_GETSERVBYNAME
4879 return pp_gservent();
4881 DIE(aTHX_ PL_no_sock_func, "getservbyname");
4887 #ifdef HAS_GETSERVBYPORT
4888 return pp_gservent();
4890 DIE(aTHX_ PL_no_sock_func, "getservbyport");
4896 #if defined(HAS_GETSERVBYNAME) || defined(HAS_GETSERVBYPORT) || defined(HAS_GETSERVENT)
4898 I32 which = PL_op->op_type;
4899 register char **elem;
4901 #ifndef HAS_GETSERV_PROTOS /* XXX Do we need individual probes? */
4902 struct servent *PerlSock_getservbyname(Netdb_name_t, Netdb_name_t);
4903 struct servent *PerlSock_getservbyport(int, Netdb_name_t);
4904 struct servent *PerlSock_getservent(void);
4906 struct servent *sent;
4909 if (which == OP_GSBYNAME) {
4910 #ifdef HAS_GETSERVBYNAME
4911 char *proto = POPpbytex;
4912 char *name = POPpbytex;
4914 if (proto && !*proto)
4917 sent = PerlSock_getservbyname(name, proto);
4919 DIE(aTHX_ PL_no_sock_func, "getservbyname");
4922 else if (which == OP_GSBYPORT) {
4923 #ifdef HAS_GETSERVBYPORT
4924 char *proto = POPpbytex;
4925 unsigned short port = POPu;
4928 port = PerlSock_htons(port);
4930 sent = PerlSock_getservbyport(port, proto);
4932 DIE(aTHX_ PL_no_sock_func, "getservbyport");
4936 #ifdef HAS_GETSERVENT
4937 sent = PerlSock_getservent();
4939 DIE(aTHX_ PL_no_sock_func, "getservent");
4943 if (GIMME != G_ARRAY) {
4944 PUSHs(sv = sv_newmortal());
4946 if (which == OP_GSBYNAME) {
4948 sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
4950 sv_setiv(sv, (IV)(sent->s_port));
4954 sv_setpv(sv, sent->s_name);
4960 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4961 sv_setpv(sv, sent->s_name);
4962 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4963 for (elem = sent->s_aliases; elem && *elem; elem++) {
4964 sv_catpv(sv, *elem);
4966 sv_catpvn(sv, " ", 1);
4968 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4970 sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
4972 sv_setiv(sv, (IV)(sent->s_port));
4974 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4975 sv_setpv(sv, sent->s_proto);
4980 DIE(aTHX_ PL_no_sock_func, "getservent");
4986 #ifdef HAS_SETHOSTENT
4988 PerlSock_sethostent(TOPi);
4991 DIE(aTHX_ PL_no_sock_func, "sethostent");
4997 #ifdef HAS_SETNETENT
4999 PerlSock_setnetent(TOPi);
5002 DIE(aTHX_ PL_no_sock_func, "setnetent");
5008 #ifdef HAS_SETPROTOENT
5010 PerlSock_setprotoent(TOPi);
5013 DIE(aTHX_ PL_no_sock_func, "setprotoent");
5019 #ifdef HAS_SETSERVENT
5021 PerlSock_setservent(TOPi);
5024 DIE(aTHX_ PL_no_sock_func, "setservent");
5030 #ifdef HAS_ENDHOSTENT
5032 PerlSock_endhostent();
5036 DIE(aTHX_ PL_no_sock_func, "endhostent");
5042 #ifdef HAS_ENDNETENT
5044 PerlSock_endnetent();
5048 DIE(aTHX_ PL_no_sock_func, "endnetent");
5054 #ifdef HAS_ENDPROTOENT
5056 PerlSock_endprotoent();
5060 DIE(aTHX_ PL_no_sock_func, "endprotoent");
5066 #ifdef HAS_ENDSERVENT
5068 PerlSock_endservent();
5072 DIE(aTHX_ PL_no_sock_func, "endservent");
5081 DIE(aTHX_ PL_no_func, "getpwnam");
5090 DIE(aTHX_ PL_no_func, "getpwuid");
5098 I32 which = PL_op->op_type;
5101 struct passwd *pwent = NULL;
5103 * We currently support only the SysV getsp* shadow password interface.
5104 * The interface is declared in <shadow.h> and often one needs to link
5105 * with -lsecurity or some such.
5106 * This interface is used at least by Solaris, HP-UX, IRIX, and Linux.
5109 * AIX getpwnam() is clever enough to return the encrypted password
5110 * only if the caller (euid?) is root.
5112 * There are at least two other shadow password APIs. Many platforms
5113 * seem to contain more than one interface for accessing the shadow
5114 * password databases, possibly for compatibility reasons.
5115 * The getsp*() is by far he simplest one, the other two interfaces
5116 * are much more complicated, but also very similar to each other.
5121 * struct pr_passwd *getprpw*();
5122 * The password is in
5123 * char getprpw*(...).ufld.fd_encrypt[]
5124 * Mention HAS_GETPRPWNAM here so that Configure probes for it.
5129 * struct es_passwd *getespw*();
5130 * The password is in
5131 * char *(getespw*(...).ufld.fd_encrypt)
5132 * Mention HAS_GETESPWNAM here so that Configure probes for it.
5134 * Mention I_PROT here so that Configure probes for it.
5136 * In HP-UX for getprpw*() the manual page claims that one should include
5137 * <hpsecurity.h> instead of <sys/security.h>, but that is not needed
5138 * if one includes <shadow.h> as that includes <hpsecurity.h>,
5139 * and pp_sys.c already includes <shadow.h> if there is such.
5141 * Note that <sys/security.h> is already probed for, but currently
5142 * it is only included in special cases.
5144 * In Digital UNIX/Tru64 if using the getespw*() (which seems to be
5145 * be preferred interface, even though also the getprpw*() interface
5146 * is available) one needs to link with -lsecurity -ldb -laud -lm.
5147 * One also needs to call set_auth_parameters() in main() before
5148 * doing anything else, whether one is using getespw*() or getprpw*().
5150 * Note that accessing the shadow databases can be magnitudes
5151 * slower than accessing the standard databases.
5158 pwent = getpwnam(POPpbytex);
5161 pwent = getpwuid((Uid_t)POPi);
5164 # ifdef HAS_GETPWENT
5167 DIE(aTHX_ PL_no_func, "getpwent");
5173 if (GIMME != G_ARRAY) {
5174 PUSHs(sv = sv_newmortal());
5176 if (which == OP_GPWNAM)
5177 # if Uid_t_sign <= 0
5178 sv_setiv(sv, (IV)pwent->pw_uid);
5180 sv_setuv(sv, (UV)pwent->pw_uid);
5183 sv_setpv(sv, pwent->pw_name);
5189 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5190 sv_setpv(sv, pwent->pw_name);
5192 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5194 /* If we have getspnam(), we try to dig up the shadow
5195 * password. If we are underprivileged, the shadow
5196 * interface will set the errno to EACCES or similar,
5197 * and return a null pointer. If this happens, we will
5198 * use the dummy password (usually "*" or "x") from the
5199 * standard password database.
5201 * In theory we could skip the shadow call completely
5202 * if euid != 0 but in practice we cannot know which
5203 * security measures are guarding the shadow databases
5204 * on a random platform.
5206 * Resist the urge to use additional shadow interfaces.
5207 * Divert the urge to writing an extension instead.
5210 # ifdef HAS_GETSPNAM
5212 struct spwd *spwent;
5213 int saverrno; /* Save and restore errno so that
5214 * underprivileged attempts seem
5215 * to have never made the unsccessful
5216 * attempt to retrieve the shadow password. */
5219 spwent = getspnam(pwent->pw_name);
5221 if (spwent && spwent->sp_pwdp)
5222 sv_setpv(sv, spwent->sp_pwdp);
5226 if (!SvPOK(sv)) /* Use the standard password, then. */
5227 sv_setpv(sv, pwent->pw_passwd);
5230 # ifndef INCOMPLETE_TAINTS
5231 /* passwd is tainted because user himself can diddle with it.
5232 * admittedly not much and in a very limited way, but nevertheless. */
5236 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5237 # if Uid_t_sign <= 0
5238 sv_setiv(sv, (IV)pwent->pw_uid);
5240 sv_setuv(sv, (UV)pwent->pw_uid);
5243 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5244 # if Uid_t_sign <= 0
5245 sv_setiv(sv, (IV)pwent->pw_gid);
5247 sv_setuv(sv, (UV)pwent->pw_gid);
5249 /* pw_change, pw_quota, and pw_age are mutually exclusive--
5250 * because of the poor interface of the Perl getpw*(),
5251 * not because there's some standard/convention saying so.
5252 * A better interface would have been to return a hash,
5253 * but we are accursed by our history, alas. --jhi. */
5254 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5256 sv_setiv(sv, (IV)pwent->pw_change);
5259 sv_setiv(sv, (IV)pwent->pw_quota);
5262 sv_setpv(sv, pwent->pw_age);
5267 /* pw_class and pw_comment are mutually exclusive--.
5268 * see the above note for pw_change, pw_quota, and pw_age. */
5269 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5271 sv_setpv(sv, pwent->pw_class);
5274 sv_setpv(sv, pwent->pw_comment);
5278 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5280 sv_setpv(sv, pwent->pw_gecos);
5282 # ifndef INCOMPLETE_TAINTS
5283 /* pw_gecos is tainted because user himself can diddle with it. */
5287 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5288 sv_setpv(sv, pwent->pw_dir);
5290 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5291 sv_setpv(sv, pwent->pw_shell);
5292 # ifndef INCOMPLETE_TAINTS
5293 /* pw_shell is tainted because user himself can diddle with it. */
5298 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5299 sv_setiv(sv, (IV)pwent->pw_expire);
5304 DIE(aTHX_ PL_no_func, "getpwent");
5310 #if defined(HAS_PASSWD) && defined(HAS_SETPWENT)
5315 DIE(aTHX_ PL_no_func, "setpwent");
5321 #if defined(HAS_PASSWD) && defined(HAS_ENDPWENT)
5326 DIE(aTHX_ PL_no_func, "endpwent");
5335 DIE(aTHX_ PL_no_func, "getgrnam");
5344 DIE(aTHX_ PL_no_func, "getgrgid");
5352 I32 which = PL_op->op_type;
5353 register char **elem;
5355 struct group *grent;
5358 if (which == OP_GGRNAM)
5359 grent = (struct group *)getgrnam(POPpbytex);
5360 else if (which == OP_GGRGID)
5361 grent = (struct group *)getgrgid(POPi);
5364 grent = (struct group *)getgrent();
5366 DIE(aTHX_ PL_no_func, "getgrent");
5370 if (GIMME != G_ARRAY) {
5371 PUSHs(sv = sv_newmortal());
5373 if (which == OP_GGRNAM)
5374 sv_setiv(sv, (IV)grent->gr_gid);
5376 sv_setpv(sv, grent->gr_name);
5382 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5383 sv_setpv(sv, grent->gr_name);
5385 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5387 sv_setpv(sv, grent->gr_passwd);
5390 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5391 sv_setiv(sv, (IV)grent->gr_gid);
5393 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5394 for (elem = grent->gr_mem; elem && *elem; elem++) {
5395 sv_catpv(sv, *elem);
5397 sv_catpvn(sv, " ", 1);
5403 DIE(aTHX_ PL_no_func, "getgrent");
5409 #if defined(HAS_GROUP) && defined(HAS_SETGRENT)
5414 DIE(aTHX_ PL_no_func, "setgrent");
5420 #if defined(HAS_GROUP) && defined(HAS_ENDGRENT)
5425 DIE(aTHX_ PL_no_func, "endgrent");
5435 if (!(tmps = PerlProc_getlogin()))
5437 PUSHp(tmps, strlen(tmps));
5440 DIE(aTHX_ PL_no_func, "getlogin");
5444 /* Miscellaneous. */
5449 dSP; dMARK; dORIGMARK; dTARGET;
5450 register I32 items = SP - MARK;
5451 unsigned long a[20];
5457 while (++MARK <= SP) {
5458 if (SvTAINTED(*MARK)) {
5464 TAINT_PROPER("syscall");
5467 /* This probably won't work on machines where sizeof(long) != sizeof(int)
5468 * or where sizeof(long) != sizeof(char*). But such machines will
5469 * not likely have syscall implemented either, so who cares?
5471 while (++MARK <= SP) {
5472 if (SvNIOK(*MARK) || !i)
5473 a[i++] = SvIV(*MARK);
5474 else if (*MARK == &PL_sv_undef)
5477 a[i++] = (unsigned long)SvPV_force(*MARK, n_a);
5483 DIE(aTHX_ "Too many args to syscall");
5485 DIE(aTHX_ "Too few args to syscall");
5487 retval = syscall(a[0]);
5490 retval = syscall(a[0],a[1]);
5493 retval = syscall(a[0],a[1],a[2]);
5496 retval = syscall(a[0],a[1],a[2],a[3]);
5499 retval = syscall(a[0],a[1],a[2],a[3],a[4]);
5502 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5]);
5505 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6]);
5508 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7]);
5512 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8]);
5515 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9]);
5518 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5522 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5526 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5530 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5531 a[10],a[11],a[12],a[13]);
5533 #endif /* atarist */
5539 DIE(aTHX_ PL_no_func, "syscall");
5543 #ifdef FCNTL_EMULATE_FLOCK
5545 /* XXX Emulate flock() with fcntl().
5546 What's really needed is a good file locking module.
5550 fcntl_emulate_flock(int fd, int operation)
5554 switch (operation & ~LOCK_NB) {
5556 flock.l_type = F_RDLCK;
5559 flock.l_type = F_WRLCK;
5562 flock.l_type = F_UNLCK;
5568 flock.l_whence = SEEK_SET;
5569 flock.l_start = flock.l_len = (Off_t)0;
5571 return fcntl(fd, (operation & LOCK_NB) ? F_SETLK : F_SETLKW, &flock);
5574 #endif /* FCNTL_EMULATE_FLOCK */
5576 #ifdef LOCKF_EMULATE_FLOCK
5578 /* XXX Emulate flock() with lockf(). This is just to increase
5579 portability of scripts. The calls are not completely
5580 interchangeable. What's really needed is a good file
5584 /* The lockf() constants might have been defined in <unistd.h>.
5585 Unfortunately, <unistd.h> causes troubles on some mixed
5586 (BSD/POSIX) systems, such as SunOS 4.1.3.
5588 Further, the lockf() constants aren't POSIX, so they might not be
5589 visible if we're compiling with _POSIX_SOURCE defined. Thus, we'll
5590 just stick in the SVID values and be done with it. Sigh.
5594 # define F_ULOCK 0 /* Unlock a previously locked region */
5597 # define F_LOCK 1 /* Lock a region for exclusive use */
5600 # define F_TLOCK 2 /* Test and lock a region for exclusive use */
5603 # define F_TEST 3 /* Test a region for other processes locks */
5607 lockf_emulate_flock(int fd, int operation)
5613 /* flock locks entire file so for lockf we need to do the same */
5615 pos = PerlLIO_lseek(fd, (Off_t)0, SEEK_CUR); /* get pos to restore later */
5616 if (pos > 0) /* is seekable and needs to be repositioned */
5617 if (PerlLIO_lseek(fd, (Off_t)0, SEEK_SET) < 0)
5618 pos = -1; /* seek failed, so don't seek back afterwards */
5621 switch (operation) {
5623 /* LOCK_SH - get a shared lock */
5625 /* LOCK_EX - get an exclusive lock */
5627 i = lockf (fd, F_LOCK, 0);
5630 /* LOCK_SH|LOCK_NB - get a non-blocking shared lock */
5631 case LOCK_SH|LOCK_NB:
5632 /* LOCK_EX|LOCK_NB - get a non-blocking exclusive lock */
5633 case LOCK_EX|LOCK_NB:
5634 i = lockf (fd, F_TLOCK, 0);
5636 if ((errno == EAGAIN) || (errno == EACCES))
5637 errno = EWOULDBLOCK;
5640 /* LOCK_UN - unlock (non-blocking is a no-op) */
5642 case LOCK_UN|LOCK_NB:
5643 i = lockf (fd, F_ULOCK, 0);
5646 /* Default - can't decipher operation */
5653 if (pos > 0) /* need to restore position of the handle */
5654 PerlLIO_lseek(fd, pos, SEEK_SET); /* ignore error here */
5659 #endif /* LOCKF_EMULATE_FLOCK */