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) && IoTYPE(io) != IoTYPE_WRONLY)
1162 report_evil_fh(gv, io, PL_op->op_type);
1166 sv_setpv(TARG, " ");
1167 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
1168 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1169 /* Find out how many bytes the char needs */
1170 Size_t len = UTF8SKIP(SvPVX(TARG));
1173 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1174 SvCUR_set(TARG,1+len);
1184 return pp_sysread();
1188 S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
1190 register PERL_CONTEXT *cx;
1191 I32 gimme = GIMME_V;
1192 AV* padlist = CvPADLIST(cv);
1193 SV** svp = AvARRAY(padlist);
1199 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
1201 SAVEVPTR(PL_curpad);
1202 PL_curpad = AvARRAY((AV*)svp[1]);
1204 setdefout(gv); /* locally select filehandle so $% et al work */
1237 SV *tmpsv = sv_newmortal();
1238 gv_efullname4(tmpsv, fgv, Nullch, FALSE);
1239 name = SvPV_nolen(tmpsv);
1242 DIE(aTHX_ "Undefined format \"%s\" called", name);
1243 DIE(aTHX_ "Not a format reference");
1246 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
1248 IoFLAGS(io) &= ~IOf_DIDTOP;
1249 return doform(cv,gv,PL_op->op_next);
1255 GV *gv = cxstack[cxstack_ix].blk_sub.gv;
1256 register IO *io = GvIOp(gv);
1257 PerlIO *ofp = IoOFP(io);
1261 register PERL_CONTEXT *cx;
1263 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
1264 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
1267 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1268 PL_formtarget != PL_toptarget)
1272 if (!IoTOP_GV(io)) {
1276 if (!IoTOP_NAME(io)) {
1277 if (!IoFMT_NAME(io))
1278 IoFMT_NAME(io) = savepv(GvNAME(gv));
1279 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%s_TOP", IoFMT_NAME(io)));
1280 topgv = gv_fetchpv(SvPVX(topname), FALSE, SVt_PVFM);
1281 if ((topgv && GvFORM(topgv)) ||
1282 !gv_fetchpv("top",FALSE,SVt_PVFM))
1283 IoTOP_NAME(io) = savepv(SvPVX(topname));
1285 IoTOP_NAME(io) = savepv("top");
1287 topgv = gv_fetchpv(IoTOP_NAME(io),FALSE, SVt_PVFM);
1288 if (!topgv || !GvFORM(topgv)) {
1289 IoLINES_LEFT(io) = 100000000;
1292 IoTOP_GV(io) = topgv;
1294 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1295 I32 lines = IoLINES_LEFT(io);
1296 char *s = SvPVX(PL_formtarget);
1297 if (lines <= 0) /* Yow, header didn't even fit!!! */
1299 while (lines-- > 0) {
1300 s = strchr(s, '\n');
1306 STRLEN save = SvCUR(PL_formtarget);
1307 SvCUR_set(PL_formtarget, s - SvPVX(PL_formtarget));
1308 do_print(PL_formtarget, ofp);
1309 SvCUR_set(PL_formtarget, save);
1310 sv_chop(PL_formtarget, s);
1311 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
1314 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
1315 do_print(PL_formfeed, ofp);
1316 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1318 PL_formtarget = PL_toptarget;
1319 IoFLAGS(io) |= IOf_DIDTOP;
1322 DIE(aTHX_ "bad top format reference");
1327 SV *sv = sv_newmortal();
1328 gv_efullname4(sv, fgv, Nullch, FALSE);
1329 name = SvPV_nolen(sv);
1332 DIE(aTHX_ "Undefined top format \"%s\" called",name);
1335 DIE(aTHX_ "Undefined top format called");
1339 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
1340 return doform(cv,gv,PL_op);
1344 POPBLOCK(cx,PL_curpm);
1350 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
1352 /* integrate with report_evil_fh()? */
1355 SV* sv = sv_newmortal();
1356 gv_efullname4(sv, gv, Nullch, FALSE);
1357 name = SvPV_nolen(sv);
1360 Perl_warner(aTHX_ WARN_IO,
1361 "Filehandle %s opened only for input", name);
1363 Perl_warner(aTHX_ WARN_IO,
1364 "Filehandle opened only for input");
1366 else if (ckWARN(WARN_CLOSED))
1367 report_evil_fh(gv, io, PL_op->op_type);
1372 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
1373 if (ckWARN(WARN_IO))
1374 Perl_warner(aTHX_ WARN_IO, "page overflow");
1376 if (!do_print(PL_formtarget, fp))
1379 FmLINES(PL_formtarget) = 0;
1380 SvCUR_set(PL_formtarget, 0);
1381 *SvEND(PL_formtarget) = '\0';
1382 if (IoFLAGS(io) & IOf_FLUSH)
1383 (void)PerlIO_flush(fp);
1388 PL_formtarget = PL_bodytarget;
1390 return pop_return();
1395 dSP; dMARK; dORIGMARK;
1402 if (PL_op->op_flags & OPf_STACKED)
1407 if (gv && (io = GvIO(gv))
1408 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1410 if (MARK == ORIGMARK) {
1413 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1417 *MARK = SvTIED_obj((SV*)io, mg);
1420 call_method("PRINTF", G_SCALAR);
1423 MARK = ORIGMARK + 1;
1430 if (!(io = GvIO(gv))) {
1431 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1432 report_evil_fh(gv, io, PL_op->op_type);
1433 SETERRNO(EBADF,RMS$_IFI);
1436 else if (!(fp = IoOFP(io))) {
1437 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
1438 /* integrate with report_evil_fh()? */
1442 gv_efullname4(sv, gv, Nullch, FALSE);
1443 name = SvPV_nolen(sv);
1446 Perl_warner(aTHX_ WARN_IO,
1447 "Filehandle %s opened only for input", name);
1449 Perl_warner(aTHX_ WARN_IO,
1450 "Filehandle opened only for input");
1452 else if (ckWARN(WARN_CLOSED))
1453 report_evil_fh(gv, io, PL_op->op_type);
1455 SETERRNO(EBADF,IoIFP(io)?RMS$_FAC:RMS$_IFI);
1459 do_sprintf(sv, SP - MARK, MARK + 1);
1460 if (!do_print(sv, fp))
1463 if (IoFLAGS(io) & IOf_FLUSH)
1464 if (PerlIO_flush(fp) == EOF)
1475 PUSHs(&PL_sv_undef);
1496 /* Need TIEHANDLE method ? */
1498 tmps = SvPV(sv, len);
1499 if (do_open(gv, tmps, len, TRUE, mode, perm, Nullfp)) {
1500 IoLINES(GvIOp(gv)) = 0;
1504 PUSHs(&PL_sv_undef);
1511 dSP; dMARK; dORIGMARK; dTARGET;
1518 Sock_size_t bufsize;
1525 bool charstart = FALSE;
1526 STRLEN charskip = 0;
1530 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1531 && gv && (io = GvIO(gv))
1532 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1537 *MARK = SvTIED_obj((SV*)io, mg);
1539 call_method("READ", G_SCALAR);
1552 sv_setpvn(bufsv, "", 0);
1553 length = SvIVx(*++MARK);
1556 offset = SvIVx(*++MARK);
1560 if (!io || !IoIFP(io))
1562 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
1563 buffer = SvPVutf8_force(bufsv, blen);
1564 /* UTF8 may not have been set if they are all low bytes */
1568 buffer = SvPV_force(bufsv, blen);
1571 DIE(aTHX_ "Negative length");
1579 if (PL_op->op_type == OP_RECV) {
1580 char namebuf[MAXPATHLEN];
1581 #if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE)
1582 bufsize = sizeof (struct sockaddr_in);
1584 bufsize = sizeof namebuf;
1586 #ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1590 buffer = SvGROW(bufsv, length+1);
1591 /* 'offset' means 'flags' here */
1592 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
1593 (struct sockaddr *)namebuf, &bufsize);
1597 /* Bogus return without padding */
1598 bufsize = sizeof (struct sockaddr_in);
1600 SvCUR_set(bufsv, count);
1601 *SvEND(bufsv) = '\0';
1602 (void)SvPOK_only(bufsv);
1606 /* This should not be marked tainted if the fp is marked clean */
1607 if (!(IoFLAGS(io) & IOf_UNTAINT))
1608 SvTAINTED_on(bufsv);
1610 sv_setpvn(TARG, namebuf, bufsize);
1615 if (PL_op->op_type == OP_RECV)
1616 DIE(aTHX_ PL_no_sock_func, "recv");
1618 if (DO_UTF8(bufsv)) {
1619 /* offset adjust in characters not bytes */
1620 blen = sv_len_utf8(bufsv);
1624 DIE(aTHX_ "Offset outside string");
1627 if (DO_UTF8(bufsv)) {
1628 /* convert offset-as-chars to offset-as-bytes */
1629 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
1632 bufsize = SvCUR(bufsv);
1633 buffer = SvGROW(bufsv, length+offset+1);
1634 if (offset > bufsize) { /* Zero any newly allocated space */
1635 Zero(buffer+bufsize, offset-bufsize, char);
1637 buffer = buffer + offset;
1639 if (PL_op->op_type == OP_SYSREAD) {
1640 #ifdef PERL_SOCK_SYSREAD_IS_RECV
1641 if (IoTYPE(io) == IoTYPE_SOCKET) {
1642 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1648 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1653 #ifdef HAS_SOCKET__bad_code_maybe
1654 if (IoTYPE(io) == IoTYPE_SOCKET) {
1655 char namebuf[MAXPATHLEN];
1656 #if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1657 bufsize = sizeof (struct sockaddr_in);
1659 bufsize = sizeof namebuf;
1661 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
1662 (struct sockaddr *)namebuf, &bufsize);
1667 count = PerlIO_read(IoIFP(io), buffer, length);
1668 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1669 if (count == 0 && PerlIO_error(IoIFP(io)))
1673 if ((IoTYPE(io) == IoTYPE_WRONLY) && ckWARN(WARN_IO))
1675 /* integrate with report_evil_fh()? */
1678 SV* sv = sv_newmortal();
1679 gv_efullname4(sv, gv, Nullch, FALSE);
1680 name = SvPV_nolen(sv);
1683 Perl_warner(aTHX_ WARN_IO,
1684 "Filehandle %s opened only for output", name);
1686 Perl_warner(aTHX_ WARN_IO,
1687 "Filehandle opened only for output");
1691 SvCUR_set(bufsv, count+(buffer - SvPVX(bufsv)));
1692 *SvEND(bufsv) = '\0';
1693 (void)SvPOK_only(bufsv);
1694 if (fp_utf8 && !IN_BYTES) {
1695 /* Look at utf8 we got back and count the characters */
1696 char *bend = buffer + count;
1697 while (buffer < bend) {
1699 skip = UTF8SKIP(buffer);
1702 if (buffer - charskip + skip > bend) {
1703 /* partial character - try for rest of it */
1704 length = skip - (bend-buffer);
1705 offset = bend - SvPVX(bufsv);
1717 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1718 provided amount read (count) was what was requested (length)
1720 if (got < wanted && count == length) {
1721 length = wanted - got;
1722 offset = bend - SvPVX(bufsv);
1725 /* return value is character count */
1730 /* This should not be marked tainted if the fp is marked clean */
1731 if (!(IoFLAGS(io) & IOf_UNTAINT))
1732 SvTAINTED_on(bufsv);
1745 int items = (SP - PL_stack_base) - TOPMARK;
1749 sv = sv_2mortal(newSViv(sv_len(*SP)));
1758 dSP; dMARK; dORIGMARK; dTARGET;
1769 if (PL_op->op_type == OP_SYSWRITE
1770 && gv && (io = GvIO(gv))
1771 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1776 *MARK = SvTIED_obj((SV*)io, mg);
1778 call_method("WRITE", G_SCALAR);
1789 #if Size_t_size > IVSIZE
1790 length = (Size_t)SvNVx(*++MARK);
1792 length = (Size_t)SvIVx(*++MARK);
1794 if ((SSize_t)length < 0)
1795 DIE(aTHX_ "Negative length");
1798 if (!io || !IoIFP(io)) {
1800 if (ckWARN(WARN_CLOSED))
1801 report_evil_fh(gv, io, PL_op->op_type);
1805 if (PerlIO_isutf8(IoIFP(io))) {
1806 buffer = SvPVutf8(bufsv, blen);
1810 sv_utf8_downgrade(bufsv, FALSE);
1811 buffer = SvPV(bufsv, blen);
1814 if (PL_op->op_type == OP_SYSWRITE) {
1816 if (DO_UTF8(bufsv)) {
1817 /* length and offset are in chars */
1818 blen = sv_len_utf8(bufsv);
1821 offset = SvIVx(*++MARK);
1824 DIE(aTHX_ "Offset outside string");
1826 } else if (offset >= blen && blen > 0)
1827 DIE(aTHX_ "Offset outside string");
1830 if (length > blen - offset)
1831 length = blen - offset;
1832 if (DO_UTF8(bufsv)) {
1833 buffer = (char*)utf8_hop((U8 *)buffer, offset);
1834 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1837 buffer = buffer+offset;
1839 #ifdef PERL_SOCK_SYSWRITE_IS_SEND
1840 if (IoTYPE(io) == IoTYPE_SOCKET) {
1841 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
1847 /* See the note at doio.c:do_print about filesize limits. --jhi */
1848 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
1853 else if (SP > MARK) {
1856 sockbuf = SvPVx(*++MARK, mlen);
1857 /* length is really flags */
1858 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1859 length, (struct sockaddr *)sockbuf, mlen);
1862 /* length is really flags */
1863 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, length);
1866 DIE(aTHX_ PL_no_sock_func, "send");
1872 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
1873 #if Size_t_size > IVSIZE
1887 return pp_sysread();
1898 if (PL_op->op_flags & OPf_SPECIAL) { /* eof() */
1900 gv = PL_last_in_gv = GvEGV(PL_argvgv);
1902 if (io && !IoIFP(io)) {
1903 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
1905 IoFLAGS(io) &= ~IOf_START;
1906 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, Nullfp);
1907 sv_setpvn(GvSV(gv), "-", 1);
1908 SvSETMAGIC(GvSV(gv));
1910 else if (!nextargv(gv))
1915 gv = PL_last_in_gv; /* eof */
1918 gv = PL_last_in_gv = (GV*)POPs; /* eof(FH) */
1920 if (gv && (io = GvIO(gv))
1921 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1924 XPUSHs(SvTIED_obj((SV*)io, mg));
1927 call_method("EOF", G_SCALAR);
1933 PUSHs(boolSV(!gv || do_eof(gv)));
1947 gv = PL_last_in_gv = (GV*)POPs;
1949 if (gv && (io = GvIO(gv))
1950 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1953 XPUSHs(SvTIED_obj((SV*)io, mg));
1956 call_method("TELL", G_SCALAR);
1962 #if LSEEKSIZE > IVSIZE
1963 PUSHn( do_tell(gv) );
1965 PUSHi( do_tell(gv) );
1972 return pp_sysseek();
1981 #if LSEEKSIZE > IVSIZE
1982 Off_t offset = (Off_t)SvNVx(POPs);
1984 Off_t offset = (Off_t)SvIVx(POPs);
1988 gv = PL_last_in_gv = (GV*)POPs;
1990 if (gv && (io = GvIO(gv))
1991 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1994 XPUSHs(SvTIED_obj((SV*)io, mg));
1995 #if LSEEKSIZE > IVSIZE
1996 XPUSHs(sv_2mortal(newSVnv((NV) offset)));
1998 XPUSHs(sv_2mortal(newSViv(offset)));
2000 XPUSHs(sv_2mortal(newSViv(whence)));
2003 call_method("SEEK", G_SCALAR);
2009 if (PL_op->op_type == OP_SEEK)
2010 PUSHs(boolSV(do_seek(gv, offset, whence)));
2012 Off_t sought = do_sysseek(gv, offset, whence);
2014 PUSHs(&PL_sv_undef);
2017 #if LSEEKSIZE > IVSIZE
2022 : newSVpvn(zero_but_true, ZBTLEN);
2023 PUSHs(sv_2mortal(sv));
2032 /* There seems to be no consensus on the length type of truncate()
2033 * and ftruncate(), both off_t and size_t have supporters. In
2034 * general one would think that when using large files, off_t is
2035 * at least as wide as size_t, so using an off_t should be okay. */
2036 /* XXX Configure probe for the length type of *truncate() needed XXX */
2039 #if Size_t_size > IVSIZE
2044 /* Checking for length < 0 is problematic as the type might or
2045 * might not be signed: if it is not, clever compilers will moan. */
2046 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
2048 #if defined(HAS_TRUNCATE) || defined(HAS_CHSIZE) || defined(F_FREESP)
2054 if (PL_op->op_flags & OPf_SPECIAL) {
2055 tmpgv = gv_fetchpv(POPpx, FALSE, SVt_PVIO);
2058 TAINT_PROPER("truncate");
2059 if (!GvIO(tmpgv) || !IoIFP(GvIOp(tmpgv)))
2062 PerlIO_flush(IoIFP(GvIOp(tmpgv)));
2064 if (ftruncate(PerlIO_fileno(IoIFP(GvIOn(tmpgv))), len) < 0)
2066 if (my_chsize(PerlIO_fileno(IoIFP(GvIOn(tmpgv))), len) < 0)
2075 if (SvTYPE(sv) == SVt_PVGV) {
2076 tmpgv = (GV*)sv; /* *main::FRED for example */
2079 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2080 tmpgv = (GV*) SvRV(sv); /* \*main::FRED for example */
2084 name = SvPV(sv, n_a);
2085 TAINT_PROPER("truncate");
2087 if (truncate(name, len) < 0)
2093 if ((tmpfd = PerlLIO_open(name, O_RDWR)) < 0)
2096 if (my_chsize(tmpfd, len) < 0)
2098 PerlLIO_close(tmpfd);
2107 SETERRNO(EBADF,RMS$_IFI);
2111 DIE(aTHX_ "truncate not implemented");
2124 unsigned int func = POPu;
2125 int optype = PL_op->op_type;
2129 IO *io = gv ? GvIOn(gv) : 0;
2131 if (!io || !argsv || !IoIFP(io)) {
2132 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2133 report_evil_fh(gv, io, PL_op->op_type);
2134 SETERRNO(EBADF,RMS$_IFI); /* well, sort of... */
2138 if (SvPOK(argsv) || !SvNIOK(argsv)) {
2141 s = SvPV_force(argsv, len);
2142 need = IOCPARM_LEN(func);
2144 s = Sv_Grow(argsv, need + 1);
2145 SvCUR_set(argsv, need);
2148 s[SvCUR(argsv)] = 17; /* a little sanity check here */
2151 retval = SvIV(argsv);
2152 s = INT2PTR(char*,retval); /* ouch */
2155 TAINT_PROPER(optype == OP_IOCTL ? "ioctl" : "fcntl");
2157 if (optype == OP_IOCTL)
2159 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
2161 DIE(aTHX_ "ioctl is not implemented");
2165 #if defined(OS2) && defined(__EMX__)
2166 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
2168 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
2171 DIE(aTHX_ "fcntl is not implemented");
2175 if (s[SvCUR(argsv)] != 17)
2176 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
2178 s[SvCUR(argsv)] = 0; /* put our null back */
2179 SvSETMAGIC(argsv); /* Assume it has changed */
2188 PUSHp(zero_but_true, ZBTLEN);
2208 if (gv && (io = GvIO(gv)))
2215 (void)PerlIO_flush(fp);
2216 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
2219 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2220 report_evil_fh(gv, io, PL_op->op_type);
2222 SETERRNO(EBADF,RMS$_IFI);
2227 DIE(aTHX_ PL_no_func, "flock()");
2239 int protocol = POPi;
2245 io = gv ? GvIOn(gv) : NULL;
2248 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2249 report_evil_fh(gv, io, PL_op->op_type);
2251 do_close(gv, FALSE);
2252 SETERRNO(EBADF,LIB$_INVARG);
2257 do_close(gv, FALSE);
2259 TAINT_PROPER("socket");
2260 fd = PerlSock_socket(domain, type, protocol);
2263 IoIFP(io) = PerlIO_fdopen(fd, "r"); /* stdio gets confused about sockets */
2264 IoOFP(io) = PerlIO_fdopen(fd, "w");
2265 IoTYPE(io) = IoTYPE_SOCKET;
2266 if (!IoIFP(io) || !IoOFP(io)) {
2267 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2268 if (IoOFP(io)) PerlIO_close(IoOFP(io));
2269 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
2272 #if defined(HAS_FCNTL) && defined(F_SETFD)
2273 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2277 setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
2282 DIE(aTHX_ PL_no_sock_func, "socket");
2288 #if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
2294 int protocol = POPi;
2301 io1 = gv1 ? GvIOn(gv1) : NULL;
2302 io2 = gv2 ? GvIOn(gv2) : NULL;
2303 if (!gv1 || !gv2 || !io1 || !io2) {
2304 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
2306 report_evil_fh(gv1, io1, PL_op->op_type);
2308 report_evil_fh(gv1, io2, PL_op->op_type);
2311 do_close(gv1, FALSE);
2313 do_close(gv2, FALSE);
2318 do_close(gv1, FALSE);
2320 do_close(gv2, FALSE);
2322 TAINT_PROPER("socketpair");
2323 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
2325 IoIFP(io1) = PerlIO_fdopen(fd[0], "r");
2326 IoOFP(io1) = PerlIO_fdopen(fd[0], "w");
2327 IoTYPE(io1) = IoTYPE_SOCKET;
2328 IoIFP(io2) = PerlIO_fdopen(fd[1], "r");
2329 IoOFP(io2) = PerlIO_fdopen(fd[1], "w");
2330 IoTYPE(io2) = IoTYPE_SOCKET;
2331 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
2332 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2333 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
2334 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
2335 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2336 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
2337 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
2340 #if defined(HAS_FCNTL) && defined(F_SETFD)
2341 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2342 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2347 DIE(aTHX_ PL_no_sock_func, "socketpair");
2355 #ifdef MPE /* Requires PRIV mode to bind() to ports < 1024 */
2356 extern void GETPRIVMODE();
2357 extern void GETUSERMODE();
2362 register IO *io = GvIOn(gv);
2366 int mpeprivmode = 0;
2369 if (!io || !IoIFP(io))
2372 addr = SvPV(addrsv, len);
2373 TAINT_PROPER("bind");
2374 #ifdef MPE /* Deal with MPE bind() peculiarities */
2375 if (((struct sockaddr *)addr)->sa_family == AF_INET) {
2376 /* The address *MUST* stupidly be zero. */
2377 ((struct sockaddr_in *)addr)->sin_addr.s_addr = INADDR_ANY;
2378 /* PRIV mode is required to bind() to ports < 1024. */
2379 if (((struct sockaddr_in *)addr)->sin_port < 1024 &&
2380 ((struct sockaddr_in *)addr)->sin_port > 0) {
2381 GETPRIVMODE(); /* If this fails, we are aborted by MPE/iX. */
2386 if (PerlSock_bind(PerlIO_fileno(IoIFP(io)),
2387 (struct sockaddr *)addr, len) >= 0)
2390 #ifdef MPE /* Switch back to USER mode */
2401 if (ckWARN(WARN_CLOSED))
2402 report_evil_fh(gv, io, PL_op->op_type);
2403 SETERRNO(EBADF,SS$_IVCHAN);
2406 DIE(aTHX_ PL_no_sock_func, "bind");
2417 register IO *io = GvIOn(gv);
2420 if (!io || !IoIFP(io))
2423 addr = SvPV(addrsv, len);
2424 TAINT_PROPER("connect");
2425 if (PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
2431 if (ckWARN(WARN_CLOSED))
2432 report_evil_fh(gv, io, PL_op->op_type);
2433 SETERRNO(EBADF,SS$_IVCHAN);
2436 DIE(aTHX_ PL_no_sock_func, "connect");
2446 register IO *io = gv ? GvIOn(gv) : NULL;
2448 if (!gv || !io || !IoIFP(io))
2451 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
2457 if (ckWARN(WARN_CLOSED))
2458 report_evil_fh(gv, io, PL_op->op_type);
2459 SETERRNO(EBADF,SS$_IVCHAN);
2462 DIE(aTHX_ PL_no_sock_func, "listen");
2474 struct sockaddr saddr; /* use a struct to avoid alignment problems */
2475 Sock_size_t len = sizeof saddr;
2488 if (!gstio || !IoIFP(gstio))
2492 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *)&saddr, &len);
2496 do_close(ngv, FALSE);
2497 IoIFP(nstio) = PerlIO_fdopen(fd, "r");
2498 /* FIXME: we dup(fd) here so that refcounting of fd's does not inhibit
2499 fclose of IoOFP's FILE * - and hence leak memory.
2500 Special treatment of _this_ case of IoIFP != IoOFP seems wrong.
2502 IoOFP(nstio) = PerlIO_fdopen(fd2 = PerlLIO_dup(fd), "w");
2503 IoTYPE(nstio) = IoTYPE_SOCKET;
2504 if (!IoIFP(nstio) || !IoOFP(nstio)) {
2505 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2506 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
2507 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
2510 #if defined(HAS_FCNTL) && defined(F_SETFD)
2511 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2512 fcntl(fd2, F_SETFD, fd2 > PL_maxsysfd); /* ensure close-on-exec */
2516 len = sizeof saddr; /* EPOC somehow truncates info */
2517 setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
2520 PUSHp((char *)&saddr, len);
2524 if (ckWARN(WARN_CLOSED))
2525 report_evil_fh(ggv, ggv ? GvIO(ggv) : 0, PL_op->op_type);
2526 SETERRNO(EBADF,SS$_IVCHAN);
2532 DIE(aTHX_ PL_no_sock_func, "accept");
2542 register IO *io = GvIOn(gv);
2544 if (!io || !IoIFP(io))
2547 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
2551 if (ckWARN(WARN_CLOSED))
2552 report_evil_fh(gv, io, PL_op->op_type);
2553 SETERRNO(EBADF,SS$_IVCHAN);
2556 DIE(aTHX_ PL_no_sock_func, "shutdown");
2563 return pp_ssockopt();
2565 DIE(aTHX_ PL_no_sock_func, "getsockopt");
2573 int optype = PL_op->op_type;
2576 unsigned int optname;
2582 if (optype == OP_GSOCKOPT)
2583 sv = sv_2mortal(NEWSV(22, 257));
2586 optname = (unsigned int) POPi;
2587 lvl = (unsigned int) POPi;
2591 if (!io || !IoIFP(io))
2594 fd = PerlIO_fileno(IoIFP(io));
2598 (void)SvPOK_only(sv);
2602 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
2617 aint = (int)SvIV(sv);
2621 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
2630 if (ckWARN(WARN_CLOSED))
2631 report_evil_fh(gv, io, optype);
2632 SETERRNO(EBADF,SS$_IVCHAN);
2637 DIE(aTHX_ PL_no_sock_func, "setsockopt");
2644 return pp_getpeername();
2646 DIE(aTHX_ PL_no_sock_func, "getsockname");
2654 int optype = PL_op->op_type;
2658 register IO *io = GvIOn(gv);
2661 if (!io || !IoIFP(io))
2664 sv = sv_2mortal(NEWSV(22, 257));
2665 (void)SvPOK_only(sv);
2669 fd = PerlIO_fileno(IoIFP(io));
2671 case OP_GETSOCKNAME:
2672 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2675 case OP_GETPEERNAME:
2676 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2678 #if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2680 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";
2681 /* If the call succeeded, make sure we don't have a zeroed port/addr */
2682 if (((struct sockaddr *)SvPVX(sv))->sa_family == AF_INET &&
2683 !memcmp((char *)SvPVX(sv) + sizeof(u_short), nowhere,
2684 sizeof(u_short) + sizeof(struct in_addr))) {
2691 #ifdef BOGUS_GETNAME_RETURN
2692 /* Interactive Unix, getpeername() and getsockname()
2693 does not return valid namelen */
2694 if (len == BOGUS_GETNAME_RETURN)
2695 len = sizeof(struct sockaddr);
2703 if (ckWARN(WARN_CLOSED))
2704 report_evil_fh(gv, io, optype);
2705 SETERRNO(EBADF,SS$_IVCHAN);
2710 DIE(aTHX_ PL_no_sock_func, "getpeername");
2729 if (PL_op->op_flags & OPf_REF) {
2731 if (PL_op->op_type == OP_LSTAT) {
2732 if (gv != PL_defgv) {
2733 if (ckWARN(WARN_IO))
2734 Perl_warner(aTHX_ WARN_IO,
2735 "lstat() on filehandle %s", GvENAME(gv));
2736 } else if (PL_laststype != OP_LSTAT)
2737 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
2741 if (gv != PL_defgv) {
2742 PL_laststype = OP_STAT;
2744 sv_setpv(PL_statname, "");
2745 PL_laststatval = (GvIO(gv) && IoIFP(GvIOp(gv))
2746 ? PerlLIO_fstat(PerlIO_fileno(IoIFP(GvIOn(gv))), &PL_statcache) : -1);
2748 if (PL_laststatval < 0) {
2749 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2750 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
2756 if (SvTYPE(sv) == SVt_PVGV) {
2760 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2762 if (PL_op->op_type == OP_LSTAT && ckWARN(WARN_IO))
2763 Perl_warner(aTHX_ WARN_IO,
2764 "lstat() on filehandle %s", GvENAME(gv));
2767 sv_setpv(PL_statname, SvPV(sv,n_a));
2770 PL_laststype = PL_op->op_type;
2771 if (PL_op->op_type == OP_LSTAT)
2772 PL_laststatval = PerlLIO_lstat(SvPV(PL_statname, n_a), &PL_statcache);
2775 PL_laststatval = PerlLIO_stat(SvPV(PL_statname, n_a), &PL_statcache);
2776 if (PL_laststatval < 0) {
2777 if (ckWARN(WARN_NEWLINE) && strchr(SvPV(PL_statname, n_a), '\n'))
2778 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "stat");
2784 if (gimme != G_ARRAY) {
2785 if (gimme != G_VOID)
2786 XPUSHs(boolSV(max));
2792 PUSHs(sv_2mortal(newSViv(PL_statcache.st_dev)));
2793 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ino)));
2794 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_mode)));
2795 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_nlink)));
2796 #if Uid_t_size > IVSIZE
2797 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_uid)));
2799 # if Uid_t_sign <= 0
2800 PUSHs(sv_2mortal(newSViv(PL_statcache.st_uid)));
2802 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_uid)));
2805 #if Gid_t_size > IVSIZE
2806 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_gid)));
2808 # if Gid_t_sign <= 0
2809 PUSHs(sv_2mortal(newSViv(PL_statcache.st_gid)));
2811 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_gid)));
2814 #ifdef USE_STAT_RDEV
2815 PUSHs(sv_2mortal(newSViv(PL_statcache.st_rdev)));
2817 PUSHs(sv_2mortal(newSVpvn("", 0)));
2819 #if Off_t_size > IVSIZE
2820 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_size)));
2822 PUSHs(sv_2mortal(newSViv(PL_statcache.st_size)));
2825 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_atime)));
2826 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_mtime)));
2827 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_ctime)));
2829 PUSHs(sv_2mortal(newSViv(PL_statcache.st_atime)));
2830 PUSHs(sv_2mortal(newSViv(PL_statcache.st_mtime)));
2831 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ctime)));
2833 #ifdef USE_STAT_BLOCKS
2834 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blksize)));
2835 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blocks)));
2837 PUSHs(sv_2mortal(newSVpvn("", 0)));
2838 PUSHs(sv_2mortal(newSVpvn("", 0)));
2848 #if defined(HAS_ACCESS) && defined(R_OK)
2850 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2851 result = access(TOPpx, R_OK);
2866 if (cando(S_IRUSR, 0, &PL_statcache))
2875 #if defined(HAS_ACCESS) && defined(W_OK)
2877 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2878 result = access(TOPpx, W_OK);
2893 if (cando(S_IWUSR, 0, &PL_statcache))
2902 #if defined(HAS_ACCESS) && defined(X_OK)
2904 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2905 result = access(TOPpx, X_OK);
2920 if (cando(S_IXUSR, 0, &PL_statcache))
2929 #ifdef PERL_EFF_ACCESS_R_OK
2931 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2932 result = PERL_EFF_ACCESS_R_OK(TOPpx);
2947 if (cando(S_IRUSR, 1, &PL_statcache))
2956 #ifdef PERL_EFF_ACCESS_W_OK
2958 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2959 result = PERL_EFF_ACCESS_W_OK(TOPpx);
2974 if (cando(S_IWUSR, 1, &PL_statcache))
2983 #ifdef PERL_EFF_ACCESS_X_OK
2985 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2986 result = PERL_EFF_ACCESS_X_OK(TOPpx);
3001 if (cando(S_IXUSR, 1, &PL_statcache))
3008 I32 result = my_stat();
3017 return pp_ftrowned();
3022 I32 result = my_stat();
3026 if (PL_statcache.st_uid == (PL_op->op_type == OP_FTEOWNED ?
3034 I32 result = my_stat();
3038 if (PL_statcache.st_size == 0)
3045 I32 result = my_stat();
3049 #if Off_t_size > IVSIZE
3050 PUSHn(PL_statcache.st_size);
3052 PUSHi(PL_statcache.st_size);
3059 I32 result = my_stat();
3063 PUSHn( (PL_basetime - PL_statcache.st_mtime) / 86400.0 );
3069 I32 result = my_stat();
3073 PUSHn( (PL_basetime - PL_statcache.st_atime) / 86400.0 );
3079 I32 result = my_stat();
3083 PUSHn( (PL_basetime - PL_statcache.st_ctime) / 86400.0 );
3089 I32 result = my_stat();
3093 if (S_ISSOCK(PL_statcache.st_mode))
3100 I32 result = my_stat();
3104 if (S_ISCHR(PL_statcache.st_mode))
3111 I32 result = my_stat();
3115 if (S_ISBLK(PL_statcache.st_mode))
3122 I32 result = my_stat();
3126 if (S_ISREG(PL_statcache.st_mode))
3133 I32 result = my_stat();
3137 if (S_ISDIR(PL_statcache.st_mode))
3144 I32 result = my_stat();
3148 if (S_ISFIFO(PL_statcache.st_mode))
3155 I32 result = my_lstat();
3159 if (S_ISLNK(PL_statcache.st_mode))
3168 I32 result = my_stat();
3172 if (PL_statcache.st_mode & S_ISUID)
3182 I32 result = my_stat();
3186 if (PL_statcache.st_mode & S_ISGID)
3196 I32 result = my_stat();
3200 if (PL_statcache.st_mode & S_ISVTX)
3211 char *tmps = Nullch;
3214 if (PL_op->op_flags & OPf_REF)
3216 else if (isGV(TOPs))
3218 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3219 gv = (GV*)SvRV(POPs);
3221 gv = gv_fetchpv(tmps = POPpx, FALSE, SVt_PVIO);
3223 if (GvIO(gv) && IoIFP(GvIOp(gv)))
3224 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
3225 else if (tmps && isDIGIT(*tmps))
3229 if (PerlLIO_isatty(fd))
3234 #if defined(atarist) /* this will work with atariST. Configure will
3235 make guesses for other systems. */
3236 # define FILE_base(f) ((f)->_base)
3237 # define FILE_ptr(f) ((f)->_ptr)
3238 # define FILE_cnt(f) ((f)->_cnt)
3239 # define FILE_bufsiz(f) ((f)->_cnt + ((f)->_ptr - (f)->_base))
3249 register STDCHAR *s;
3256 if (PL_op->op_flags & OPf_REF)
3258 else if (isGV(TOPs))
3260 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3261 gv = (GV*)SvRV(POPs);
3267 if (gv == PL_defgv) {
3269 io = GvIO(PL_statgv);
3272 goto really_filename;
3277 PL_laststatval = -1;
3278 sv_setpv(PL_statname, "");
3279 io = GvIO(PL_statgv);
3281 if (io && IoIFP(io)) {
3282 if (! PerlIO_has_base(IoIFP(io)))
3283 DIE(aTHX_ "-T and -B not implemented on filehandles");
3284 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3285 if (PL_laststatval < 0)
3287 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
3288 if (PL_op->op_type == OP_FTTEXT)
3293 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
3294 i = PerlIO_getc(IoIFP(io));
3296 (void)PerlIO_ungetc(IoIFP(io),i);
3298 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
3300 len = PerlIO_get_bufsiz(IoIFP(io));
3301 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
3302 /* sfio can have large buffers - limit to 512 */
3307 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
3309 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
3311 SETERRNO(EBADF,RMS$_IFI);
3319 PL_laststatval = -1;
3320 PL_laststype = OP_STAT;
3321 sv_setpv(PL_statname, SvPV(sv, n_a));
3322 if (!(fp = PerlIO_open(SvPVX(PL_statname), "r"))) {
3323 if (ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
3324 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "open");
3327 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(fp), &PL_statcache);
3328 if (PL_laststatval < 0) {
3329 (void)PerlIO_close(fp);
3332 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, Nullch);
3333 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3334 (void)PerlIO_close(fp);
3336 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
3337 RETPUSHNO; /* special case NFS directories */
3338 RETPUSHYES; /* null file is anything */
3343 /* now scan s to look for textiness */
3344 /* XXX ASCII dependent code */
3346 #if defined(DOSISH) || defined(USEMYBINMODE)
3347 /* ignore trailing ^Z on short files */
3348 if (len && len < sizeof(tbuf) && tbuf[len-1] == 26)
3352 for (i = 0; i < len; i++, s++) {
3353 if (!*s) { /* null never allowed in text */
3358 else if (!(isPRINT(*s) || isSPACE(*s)))
3361 else if (*s & 128) {
3363 if (IN_LOCALE_RUNTIME && isALPHA_LC(*s))
3366 /* utf8 characters don't count as odd */
3367 if (UTF8_IS_START(*s)) {
3368 int ulen = UTF8SKIP(s);
3369 if (ulen < len - i) {
3371 for (j = 1; j < ulen; j++) {
3372 if (!UTF8_IS_CONTINUATION(s[j]))
3375 --ulen; /* loop does extra increment */
3385 *s != '\n' && *s != '\r' && *s != '\b' &&
3386 *s != '\t' && *s != '\f' && *s != 27)
3391 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
3416 if( !tmps || !*tmps ) {
3417 if ( (svp = hv_fetch(GvHVn(PL_envgv), "HOME", 4, FALSE))
3418 || (svp = hv_fetch(GvHVn(PL_envgv), "LOGDIR", 6, FALSE))
3420 || (svp = hv_fetch(GvHVn(PL_envgv), "SYS$LOGIN", 9, FALSE))
3425 deprecate_old("chdir('') or chdir(undef) as chdir()");
3426 tmps = SvPV(*svp, n_a);
3430 TAINT_PROPER("chdir");
3435 TAINT_PROPER("chdir");
3436 PUSHi( PerlDir_chdir(tmps) >= 0 );
3438 /* Clear the DEFAULT element of ENV so we'll get the new value
3440 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
3448 dSP; dMARK; dTARGET;
3449 I32 value = (I32)apply(PL_op->op_type, MARK, SP);
3455 DIE(aTHX_ PL_no_func, "chown");
3465 TAINT_PROPER("chroot");
3466 PUSHi( chroot(tmps) >= 0 );
3469 DIE(aTHX_ PL_no_func, "chroot");
3475 dSP; dMARK; dTARGET;
3477 value = (I32)apply(PL_op->op_type, MARK, SP);
3485 dSP; dMARK; dTARGET;
3487 value = (I32)apply(PL_op->op_type, MARK, SP);
3495 dSP; dMARK; dTARGET;
3497 value = (I32)apply(PL_op->op_type, MARK, SP);
3509 char *tmps2 = POPpx;
3510 char *tmps = SvPV(TOPs, n_a);
3511 TAINT_PROPER("rename");
3513 anum = PerlLIO_rename(tmps, tmps2);
3515 if (!(anum = PerlLIO_stat(tmps, &PL_statbuf))) {
3516 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3519 if (PL_euid || PerlLIO_stat(tmps2, &PL_statbuf) < 0 || !S_ISDIR(PL_statbuf.st_mode))
3520 (void)UNLINK(tmps2);
3521 if (!(anum = link(tmps, tmps2)))
3522 anum = UNLINK(tmps);
3535 char *tmps2 = POPpx;
3536 char *tmps = SvPV(TOPs, n_a);
3537 TAINT_PROPER("link");
3538 SETi( PerlLIO_link(tmps, tmps2) >= 0 );
3541 DIE(aTHX_ PL_no_func, "link");
3550 char *tmps2 = POPpx;
3551 char *tmps = SvPV(TOPs, n_a);
3552 TAINT_PROPER("symlink");
3553 SETi( symlink(tmps, tmps2) >= 0 );
3556 DIE(aTHX_ PL_no_func, "symlink");
3566 char buf[MAXPATHLEN];
3570 #ifndef INCOMPLETE_TAINTS
3574 len = readlink(tmps, buf, sizeof(buf) - 1);
3582 RETSETUNDEF; /* just pretend it's a normal file */
3586 #if !defined(HAS_MKDIR) || !defined(HAS_RMDIR)
3588 S_dooneliner(pTHX_ char *cmd, char *filename)
3590 char *save_filename = filename;
3596 New(666, cmdline, strlen(cmd) + (strlen(filename) * 2) + 10, char);
3597 strcpy(cmdline, cmd);
3598 strcat(cmdline, " ");
3599 for (s = cmdline + strlen(cmdline); *filename; ) {
3604 myfp = PerlProc_popen(cmdline, "r");
3608 SV *tmpsv = sv_newmortal();
3609 /* Need to save/restore 'PL_rs' ?? */
3610 s = sv_gets(tmpsv, myfp, 0);
3611 (void)PerlProc_pclose(myfp);
3615 #ifdef HAS_SYS_ERRLIST
3620 /* you don't see this */
3622 #ifdef HAS_SYS_ERRLIST
3630 if (instr(s, errmsg)) {
3637 #define EACCES EPERM
3639 if (instr(s, "cannot make"))
3640 SETERRNO(EEXIST,RMS$_FEX);
3641 else if (instr(s, "existing file"))
3642 SETERRNO(EEXIST,RMS$_FEX);
3643 else if (instr(s, "ile exists"))
3644 SETERRNO(EEXIST,RMS$_FEX);
3645 else if (instr(s, "non-exist"))
3646 SETERRNO(ENOENT,RMS$_FNF);
3647 else if (instr(s, "does not exist"))
3648 SETERRNO(ENOENT,RMS$_FNF);
3649 else if (instr(s, "not empty"))
3650 SETERRNO(EBUSY,SS$_DEVOFFLINE);
3651 else if (instr(s, "cannot access"))
3652 SETERRNO(EACCES,RMS$_PRV);
3654 SETERRNO(EPERM,RMS$_PRV);
3657 else { /* some mkdirs return no failure indication */
3658 anum = (PerlLIO_stat(save_filename, &PL_statbuf) >= 0);
3659 if (PL_op->op_type == OP_RMDIR)
3664 SETERRNO(EACCES,RMS$_PRV); /* a guess */
3689 tmps = SvPV(TOPs, len);
3690 /* Different operating and file systems take differently to
3691 * trailing slashes. According to POSIX 1003.1 1996 Edition
3692 * any number of trailing slashes should be allowed.
3693 * Thusly we snip them away so that even non-conforming
3694 * systems are happy. */
3695 /* We should probably do this "filtering" for all
3696 * the functions that expect (potentially) directory names:
3697 * -d, chdir(), chmod(), chown(), chroot(), fcntl()?,
3698 * (mkdir()), opendir(), rename(), rmdir(), stat(). --jhi */
3699 if (len > 1 && tmps[len-1] == '/') {
3700 while (tmps[len] == '/' && len > 1)
3702 tmps = savepvn(tmps, len);
3706 TAINT_PROPER("mkdir");
3708 SETi( PerlDir_mkdir(tmps, mode) >= 0 );
3710 SETi( dooneliner("mkdir", tmps) );
3711 oldumask = PerlLIO_umask(0);
3712 PerlLIO_umask(oldumask);
3713 PerlLIO_chmod(tmps, (mode & ~oldumask) & 0777);
3727 TAINT_PROPER("rmdir");
3729 XPUSHi( PerlDir_rmdir(tmps) >= 0 );
3731 XPUSHi( dooneliner("rmdir", tmps) );
3736 /* Directory calls. */
3740 #if defined(Direntry_t) && defined(HAS_READDIR)
3743 char *dirname = POPpx;
3745 register IO *io = GvIOn(gv);
3751 PerlDir_close(IoDIRP(io));
3752 if (!(IoDIRP(io) = PerlDir_open(dirname)))
3758 SETERRNO(EBADF,RMS$_DIR);
3761 DIE(aTHX_ PL_no_dir_func, "opendir");
3767 #if defined(Direntry_t) && defined(HAS_READDIR)
3769 #if !defined(I_DIRENT) && !defined(VMS)
3770 Direntry_t *readdir (DIR *);
3772 register Direntry_t *dp;
3774 register IO *io = GvIOn(gv);
3777 if (!io || !IoDIRP(io))
3780 if (GIMME == G_ARRAY) {
3782 while ((dp = (Direntry_t *)PerlDir_read(IoDIRP(io)))) {
3784 sv = newSVpvn(dp->d_name, dp->d_namlen);
3786 sv = newSVpv(dp->d_name, 0);
3788 #ifndef INCOMPLETE_TAINTS
3789 if (!(IoFLAGS(io) & IOf_UNTAINT))
3792 XPUSHs(sv_2mortal(sv));
3796 if (!(dp = (Direntry_t *)PerlDir_read(IoDIRP(io))))
3799 sv = newSVpvn(dp->d_name, dp->d_namlen);
3801 sv = newSVpv(dp->d_name, 0);
3803 #ifndef INCOMPLETE_TAINTS
3804 if (!(IoFLAGS(io) & IOf_UNTAINT))
3807 XPUSHs(sv_2mortal(sv));
3813 SETERRNO(EBADF,RMS$_ISI);
3814 if (GIMME == G_ARRAY)
3819 DIE(aTHX_ PL_no_dir_func, "readdir");
3825 #if defined(HAS_TELLDIR) || defined(telldir)
3827 /* XXX does _anyone_ need this? --AD 2/20/1998 */
3828 /* XXX netbsd still seemed to.
3829 XXX HAS_TELLDIR_PROTO is new style, NEED_TELLDIR_PROTO is old style.
3830 --JHI 1999-Feb-02 */
3831 # if !defined(HAS_TELLDIR_PROTO) || defined(NEED_TELLDIR_PROTO)
3832 long telldir (DIR *);
3835 register IO *io = GvIOn(gv);
3837 if (!io || !IoDIRP(io))
3840 PUSHi( PerlDir_tell(IoDIRP(io)) );
3844 SETERRNO(EBADF,RMS$_ISI);
3847 DIE(aTHX_ PL_no_dir_func, "telldir");
3853 #if defined(HAS_SEEKDIR) || defined(seekdir)
3857 register IO *io = GvIOn(gv);
3859 if (!io || !IoDIRP(io))
3862 (void)PerlDir_seek(IoDIRP(io), along);
3867 SETERRNO(EBADF,RMS$_ISI);
3870 DIE(aTHX_ PL_no_dir_func, "seekdir");
3876 #if defined(HAS_REWINDDIR) || defined(rewinddir)
3879 register IO *io = GvIOn(gv);
3881 if (!io || !IoDIRP(io))
3884 (void)PerlDir_rewind(IoDIRP(io));
3888 SETERRNO(EBADF,RMS$_ISI);
3891 DIE(aTHX_ PL_no_dir_func, "rewinddir");
3897 #if defined(Direntry_t) && defined(HAS_READDIR)
3900 register IO *io = GvIOn(gv);
3902 if (!io || !IoDIRP(io))
3905 #ifdef VOID_CLOSEDIR
3906 PerlDir_close(IoDIRP(io));
3908 if (PerlDir_close(IoDIRP(io)) < 0) {
3909 IoDIRP(io) = 0; /* Don't try to close again--coredumps on SysV */
3918 SETERRNO(EBADF,RMS$_IFI);
3921 DIE(aTHX_ PL_no_dir_func, "closedir");
3925 /* Process control. */
3935 PERL_FLUSHALL_FOR_CHILD;
3936 childpid = PerlProc_fork();
3941 if ((tmpgv = gv_fetchpv("$", TRUE, SVt_PV))) {
3942 SvREADONLY_off(GvSV(tmpgv));
3943 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3944 SvREADONLY_on(GvSV(tmpgv));
3946 hv_clear(PL_pidstatus); /* no kids, so don't wait for 'em */
3951 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
3956 PERL_FLUSHALL_FOR_CHILD;
3957 childpid = PerlProc_fork();
3963 DIE(aTHX_ PL_no_func, "fork");
3970 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
3975 #ifdef PERL_OLD_SIGNALS
3976 childpid = wait4pid(-1, &argflags, 0);
3978 while ((childpid = wait4pid(-1, &argflags, 0)) == -1 && errno == EINTR) {
3982 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
3983 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
3984 STATUS_NATIVE_SET((childpid && childpid != -1) ? argflags : -1);
3986 STATUS_NATIVE_SET((childpid > 0) ? argflags : -1);
3991 DIE(aTHX_ PL_no_func, "wait");
3997 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
4005 #ifdef PERL_OLD_SIGNALS
4006 childpid = wait4pid(childpid, &argflags, optype);
4008 while ((childpid = wait4pid(childpid, &argflags, optype)) == -1 && errno == EINTR) {
4012 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4013 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
4014 STATUS_NATIVE_SET((childpid && childpid != -1) ? argflags : -1);
4016 STATUS_NATIVE_SET((childpid > 0) ? argflags : -1);
4021 DIE(aTHX_ PL_no_func, "waitpid");
4027 dSP; dMARK; dORIGMARK; dTARGET;
4036 while (++MARK <= SP) {
4037 (void)SvPV_nolen(*MARK); /* stringify for taint check */
4042 /* XXX Remove warning at end of deprecation cycle --RD 2002-02 */
4043 if (SP - MARK == 1) {
4044 TAINT_PROPER("system");
4046 else if (ckWARN2(WARN_TAINT, WARN_DEPRECATED)) {
4047 Perl_warner(aTHX_ packWARN2(WARN_TAINT, WARN_DEPRECATED),
4048 "Use of tainted arguments in %s is deprecated", "system");
4051 PERL_FLUSHALL_FOR_CHILD;
4052 #if (defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(OS2) || defined(PERL_MICRO)
4056 Sigsave_t ihand,qhand; /* place to save signals during system() */
4058 if (PerlProc_pipe(pp) >= 0)
4060 while ((childpid = PerlProc_fork()) == -1) {
4061 if (errno != EAGAIN) {
4066 PerlLIO_close(pp[0]);
4067 PerlLIO_close(pp[1]);
4075 PerlLIO_close(pp[1]);
4077 rsignal_save(SIGINT, SIG_IGN, &ihand);
4078 rsignal_save(SIGQUIT, SIG_IGN, &qhand);
4081 result = wait4pid(childpid, &status, 0);
4082 } while (result == -1 && errno == EINTR);
4084 (void)rsignal_restore(SIGINT, &ihand);
4085 (void)rsignal_restore(SIGQUIT, &qhand);
4087 STATUS_NATIVE_SET(result == -1 ? -1 : status);
4088 do_execfree(); /* free any memory child malloced on fork */
4094 while (n < sizeof(int)) {
4095 n1 = PerlLIO_read(pp[0],
4096 (void*)(((char*)&errkid)+n),
4102 PerlLIO_close(pp[0]);
4103 if (n) { /* Error */
4104 if (n != sizeof(int))
4105 DIE(aTHX_ "panic: kid popen errno read");
4106 errno = errkid; /* Propagate errno from kid */
4107 STATUS_CURRENT = -1;
4110 PUSHi(STATUS_CURRENT);
4114 PerlLIO_close(pp[0]);
4115 #if defined(HAS_FCNTL) && defined(F_SETFD)
4116 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
4120 if (PL_op->op_flags & OPf_STACKED) {
4121 SV *really = *++MARK;
4122 value = (I32)do_aexec5(really, MARK, SP, pp[1], did_pipes);
4124 else if (SP - MARK != 1)
4125 value = (I32)do_aexec5(Nullsv, MARK, SP, pp[1], did_pipes);
4127 value = (I32)do_exec3(SvPVx(sv_mortalcopy(*SP), n_a), pp[1], did_pipes);
4130 #else /* ! FORK or VMS or OS/2 */
4133 if (PL_op->op_flags & OPf_STACKED) {
4134 SV *really = *++MARK;
4135 value = (I32)do_aspawn(really, (void **)MARK, (void **)SP);
4137 else if (SP - MARK != 1)
4138 value = (I32)do_aspawn(Nullsv, (void **)MARK, (void **)SP);
4140 value = (I32)do_spawn(SvPVx(sv_mortalcopy(*SP), n_a));
4142 if (PL_statusvalue == -1) /* hint that value must be returned as is */
4144 STATUS_NATIVE_SET(value);
4147 PUSHi(result ? value : STATUS_CURRENT);
4148 #endif /* !FORK or VMS */
4154 dSP; dMARK; dORIGMARK; dTARGET;
4160 while (++MARK <= SP) {
4161 (void)SvPV_nolen(*MARK); /* stringify for taint check */
4166 /* XXX Remove warning at end of deprecation cycle --RD 2002-02 */
4167 if (SP - MARK == 1) {
4168 TAINT_PROPER("exec");
4170 else if (ckWARN2(WARN_TAINT, WARN_DEPRECATED)) {
4171 Perl_warner(aTHX_ packWARN2(WARN_TAINT, WARN_DEPRECATED),
4172 "Use of tainted arguments in %s is deprecated", "exec");
4175 PERL_FLUSHALL_FOR_CHILD;
4176 if (PL_op->op_flags & OPf_STACKED) {
4177 SV *really = *++MARK;
4178 value = (I32)do_aexec(really, MARK, SP);
4180 else if (SP - MARK != 1)
4182 value = (I32)vms_do_aexec(Nullsv, MARK, SP);
4186 (void ) do_aspawn(Nullsv, MARK, SP);
4190 value = (I32)do_aexec(Nullsv, MARK, SP);
4195 value = (I32)vms_do_exec(SvPVx(sv_mortalcopy(*SP), n_a));
4198 (void) do_spawn(SvPVx(sv_mortalcopy(*SP), n_a));
4201 value = (I32)do_exec(SvPVx(sv_mortalcopy(*SP), n_a));
4214 dSP; dMARK; dTARGET;
4216 value = (I32)apply(PL_op->op_type, MARK, SP);
4221 DIE(aTHX_ PL_no_func, "kill");
4229 XPUSHi( getppid() );
4232 DIE(aTHX_ PL_no_func, "getppid");
4248 pgrp = (I32)BSD_GETPGRP(pid);
4250 if (pid != 0 && pid != PerlProc_getpid())
4251 DIE(aTHX_ "POSIX getpgrp can't take an argument");
4257 DIE(aTHX_ PL_no_func, "getpgrp()");
4276 TAINT_PROPER("setpgrp");
4278 SETi( BSD_SETPGRP(pid, pgrp) >= 0 );
4280 if ((pgrp != 0 && pgrp != PerlProc_getpid())
4281 || (pid != 0 && pid != PerlProc_getpid()))
4283 DIE(aTHX_ "setpgrp can't take arguments");
4285 SETi( setpgrp() >= 0 );
4286 #endif /* USE_BSDPGRP */
4289 DIE(aTHX_ PL_no_func, "setpgrp()");
4295 #ifdef HAS_GETPRIORITY
4299 SETi( getpriority(which, who) );
4302 DIE(aTHX_ PL_no_func, "getpriority()");
4308 #ifdef HAS_SETPRIORITY
4313 TAINT_PROPER("setpriority");
4314 SETi( setpriority(which, who, niceval) >= 0 );
4317 DIE(aTHX_ PL_no_func, "setpriority()");
4327 XPUSHn( time(Null(Time_t*)) );
4329 XPUSHi( time(Null(Time_t*)) );
4334 /* XXX The POSIX name is CLK_TCK; it is to be preferred
4335 to HZ. Probably. For now, assume that if the system
4336 defines HZ, it does so correctly. (Will this break
4338 Probably we ought to use _sysconf(_SC_CLK_TCK), if
4339 it's supported. --AD 9/96.
4360 (void)PerlProc_times(&PL_timesbuf);
4362 (void)PerlProc_times((tbuffer_t *)&PL_timesbuf); /* time.h uses different name for */
4363 /* struct tms, though same data */
4367 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_utime)/HZ)));
4368 if (GIMME == G_ARRAY) {
4369 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_stime)/HZ)));
4370 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_cutime)/HZ)));
4371 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_cstime)/HZ)));
4375 DIE(aTHX_ "times not implemented");
4376 #endif /* HAS_TIMES */
4389 static char *dayname[] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
4390 static char *monname[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
4391 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
4397 when = (Time_t)SvNVx(POPs);
4399 when = (Time_t)SvIVx(POPs);
4402 if (PL_op->op_type == OP_LOCALTIME)
4403 tmbuf = localtime(&when);
4405 tmbuf = gmtime(&when);
4407 if (GIMME != G_ARRAY) {
4413 tsv = Perl_newSVpvf(aTHX_ "%s %s %2d %02d:%02d:%02d %d",
4414 dayname[tmbuf->tm_wday],
4415 monname[tmbuf->tm_mon],
4420 tmbuf->tm_year + 1900);
4421 PUSHs(sv_2mortal(tsv));
4426 PUSHs(sv_2mortal(newSViv(tmbuf->tm_sec)));
4427 PUSHs(sv_2mortal(newSViv(tmbuf->tm_min)));
4428 PUSHs(sv_2mortal(newSViv(tmbuf->tm_hour)));
4429 PUSHs(sv_2mortal(newSViv(tmbuf->tm_mday)));
4430 PUSHs(sv_2mortal(newSViv(tmbuf->tm_mon)));
4431 PUSHs(sv_2mortal(newSViv(tmbuf->tm_year)));
4432 PUSHs(sv_2mortal(newSViv(tmbuf->tm_wday)));
4433 PUSHs(sv_2mortal(newSViv(tmbuf->tm_yday)));
4434 PUSHs(sv_2mortal(newSViv(tmbuf->tm_isdst)));
4445 anum = alarm((unsigned int)anum);
4452 DIE(aTHX_ PL_no_func, "alarm");
4463 (void)time(&lasttime);
4468 PerlProc_sleep((unsigned int)duration);
4471 XPUSHi(when - lasttime);
4475 /* Shared memory. */
4489 return pp_shmwrite();
4494 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4495 dSP; dMARK; dTARGET;
4496 I32 value = (I32)(do_shmio(PL_op->op_type, MARK, SP) >= 0);
4505 /* Message passing. */
4519 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4520 dSP; dMARK; dTARGET;
4521 I32 value = (I32)(do_msgsnd(MARK, SP) >= 0);
4532 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4533 dSP; dMARK; dTARGET;
4534 I32 value = (I32)(do_msgrcv(MARK, SP) >= 0);
4547 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4548 dSP; dMARK; dTARGET;
4549 int anum = do_ipcget(PL_op->op_type, MARK, SP);
4556 DIE(aTHX_ "System V IPC is not implemented on this machine");
4562 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4563 dSP; dMARK; dTARGET;
4564 int anum = do_ipcctl(PL_op->op_type, MARK, SP);
4572 PUSHp(zero_but_true, ZBTLEN);
4582 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4583 dSP; dMARK; dTARGET;
4584 I32 value = (I32)(do_semop(MARK, SP) >= 0);
4593 /* Get system info. */
4597 #ifdef HAS_GETHOSTBYNAME
4598 return pp_ghostent();
4600 DIE(aTHX_ PL_no_sock_func, "gethostbyname");
4606 #ifdef HAS_GETHOSTBYADDR
4607 return pp_ghostent();
4609 DIE(aTHX_ PL_no_sock_func, "gethostbyaddr");
4615 #if defined(HAS_GETHOSTBYNAME) || defined(HAS_GETHOSTBYADDR) || defined(HAS_GETHOSTENT)
4617 I32 which = PL_op->op_type;
4618 register char **elem;
4620 #ifndef HAS_GETHOST_PROTOS /* XXX Do we need individual probes? */
4621 struct hostent *PerlSock_gethostbyaddr(Netdb_host_t, Netdb_hlen_t, int);
4622 struct hostent *PerlSock_gethostbyname(Netdb_name_t);
4623 struct hostent *PerlSock_gethostent(void);
4625 struct hostent *hent;
4630 if (which == OP_GHBYNAME)
4631 #ifdef HAS_GETHOSTBYNAME
4632 hent = PerlSock_gethostbyname(POPpbytex);
4634 DIE(aTHX_ PL_no_sock_func, "gethostbyname");
4636 else if (which == OP_GHBYADDR) {
4637 #ifdef HAS_GETHOSTBYADDR
4638 int addrtype = POPi;
4641 Netdb_host_t addr = (Netdb_host_t) SvPVbyte(addrsv, addrlen);
4643 hent = PerlSock_gethostbyaddr(addr, (Netdb_hlen_t) addrlen, addrtype);
4645 DIE(aTHX_ PL_no_sock_func, "gethostbyaddr");
4649 #ifdef HAS_GETHOSTENT
4650 hent = PerlSock_gethostent();
4652 DIE(aTHX_ PL_no_sock_func, "gethostent");
4655 #ifdef HOST_NOT_FOUND
4657 STATUS_NATIVE_SET(h_errno);
4660 if (GIMME != G_ARRAY) {
4661 PUSHs(sv = sv_newmortal());
4663 if (which == OP_GHBYNAME) {
4665 sv_setpvn(sv, hent->h_addr, hent->h_length);
4668 sv_setpv(sv, (char*)hent->h_name);
4674 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4675 sv_setpv(sv, (char*)hent->h_name);
4676 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4677 for (elem = hent->h_aliases; elem && *elem; elem++) {
4678 sv_catpv(sv, *elem);
4680 sv_catpvn(sv, " ", 1);
4682 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4683 sv_setiv(sv, (IV)hent->h_addrtype);
4684 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4685 len = hent->h_length;
4686 sv_setiv(sv, (IV)len);
4688 for (elem = hent->h_addr_list; elem && *elem; elem++) {
4689 XPUSHs(sv = sv_mortalcopy(&PL_sv_no));
4690 sv_setpvn(sv, *elem, len);
4693 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4695 sv_setpvn(sv, hent->h_addr, len);
4700 DIE(aTHX_ PL_no_sock_func, "gethostent");
4706 #ifdef HAS_GETNETBYNAME
4707 return pp_gnetent();
4709 DIE(aTHX_ PL_no_sock_func, "getnetbyname");
4715 #ifdef HAS_GETNETBYADDR
4716 return pp_gnetent();
4718 DIE(aTHX_ PL_no_sock_func, "getnetbyaddr");
4724 #if defined(HAS_GETNETBYNAME) || defined(HAS_GETNETBYADDR) || defined(HAS_GETNETENT)
4726 I32 which = PL_op->op_type;
4727 register char **elem;
4729 #ifndef HAS_GETNET_PROTOS /* XXX Do we need individual probes? */
4730 struct netent *PerlSock_getnetbyaddr(Netdb_net_t, int);
4731 struct netent *PerlSock_getnetbyname(Netdb_name_t);
4732 struct netent *PerlSock_getnetent(void);
4734 struct netent *nent;
4737 if (which == OP_GNBYNAME)
4738 #ifdef HAS_GETNETBYNAME
4739 nent = PerlSock_getnetbyname(POPpbytex);
4741 DIE(aTHX_ PL_no_sock_func, "getnetbyname");
4743 else if (which == OP_GNBYADDR) {
4744 #ifdef HAS_GETNETBYADDR
4745 int addrtype = POPi;
4746 Netdb_net_t addr = (Netdb_net_t) (U32)POPu;
4747 nent = PerlSock_getnetbyaddr(addr, addrtype);
4749 DIE(aTHX_ PL_no_sock_func, "getnetbyaddr");
4753 #ifdef HAS_GETNETENT
4754 nent = PerlSock_getnetent();
4756 DIE(aTHX_ PL_no_sock_func, "getnetent");
4760 if (GIMME != G_ARRAY) {
4761 PUSHs(sv = sv_newmortal());
4763 if (which == OP_GNBYNAME)
4764 sv_setiv(sv, (IV)nent->n_net);
4766 sv_setpv(sv, nent->n_name);
4772 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4773 sv_setpv(sv, nent->n_name);
4774 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4775 for (elem = nent->n_aliases; elem && *elem; elem++) {
4776 sv_catpv(sv, *elem);
4778 sv_catpvn(sv, " ", 1);
4780 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4781 sv_setiv(sv, (IV)nent->n_addrtype);
4782 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4783 sv_setiv(sv, (IV)nent->n_net);
4788 DIE(aTHX_ PL_no_sock_func, "getnetent");
4794 #ifdef HAS_GETPROTOBYNAME
4795 return pp_gprotoent();
4797 DIE(aTHX_ PL_no_sock_func, "getprotobyname");
4803 #ifdef HAS_GETPROTOBYNUMBER
4804 return pp_gprotoent();
4806 DIE(aTHX_ PL_no_sock_func, "getprotobynumber");
4812 #if defined(HAS_GETPROTOBYNAME) || defined(HAS_GETPROTOBYNUMBER) || defined(HAS_GETPROTOENT)
4814 I32 which = PL_op->op_type;
4815 register char **elem;
4817 #ifndef HAS_GETPROTO_PROTOS /* XXX Do we need individual probes? */
4818 struct protoent *PerlSock_getprotobyname(Netdb_name_t);
4819 struct protoent *PerlSock_getprotobynumber(int);
4820 struct protoent *PerlSock_getprotoent(void);
4822 struct protoent *pent;
4825 if (which == OP_GPBYNAME)
4826 #ifdef HAS_GETPROTOBYNAME
4827 pent = PerlSock_getprotobyname(POPpbytex);
4829 DIE(aTHX_ PL_no_sock_func, "getprotobyname");
4831 else if (which == OP_GPBYNUMBER)
4832 #ifdef HAS_GETPROTOBYNUMBER
4833 pent = PerlSock_getprotobynumber(POPi);
4835 DIE(aTHX_ PL_no_sock_func, "getprotobynumber");
4838 #ifdef HAS_GETPROTOENT
4839 pent = PerlSock_getprotoent();
4841 DIE(aTHX_ PL_no_sock_func, "getprotoent");
4845 if (GIMME != G_ARRAY) {
4846 PUSHs(sv = sv_newmortal());
4848 if (which == OP_GPBYNAME)
4849 sv_setiv(sv, (IV)pent->p_proto);
4851 sv_setpv(sv, pent->p_name);
4857 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4858 sv_setpv(sv, pent->p_name);
4859 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4860 for (elem = pent->p_aliases; elem && *elem; elem++) {
4861 sv_catpv(sv, *elem);
4863 sv_catpvn(sv, " ", 1);
4865 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4866 sv_setiv(sv, (IV)pent->p_proto);
4871 DIE(aTHX_ PL_no_sock_func, "getprotoent");
4877 #ifdef HAS_GETSERVBYNAME
4878 return pp_gservent();
4880 DIE(aTHX_ PL_no_sock_func, "getservbyname");
4886 #ifdef HAS_GETSERVBYPORT
4887 return pp_gservent();
4889 DIE(aTHX_ PL_no_sock_func, "getservbyport");
4895 #if defined(HAS_GETSERVBYNAME) || defined(HAS_GETSERVBYPORT) || defined(HAS_GETSERVENT)
4897 I32 which = PL_op->op_type;
4898 register char **elem;
4900 #ifndef HAS_GETSERV_PROTOS /* XXX Do we need individual probes? */
4901 struct servent *PerlSock_getservbyname(Netdb_name_t, Netdb_name_t);
4902 struct servent *PerlSock_getservbyport(int, Netdb_name_t);
4903 struct servent *PerlSock_getservent(void);
4905 struct servent *sent;
4908 if (which == OP_GSBYNAME) {
4909 #ifdef HAS_GETSERVBYNAME
4910 char *proto = POPpbytex;
4911 char *name = POPpbytex;
4913 if (proto && !*proto)
4916 sent = PerlSock_getservbyname(name, proto);
4918 DIE(aTHX_ PL_no_sock_func, "getservbyname");
4921 else if (which == OP_GSBYPORT) {
4922 #ifdef HAS_GETSERVBYPORT
4923 char *proto = POPpbytex;
4924 unsigned short port = POPu;
4927 port = PerlSock_htons(port);
4929 sent = PerlSock_getservbyport(port, proto);
4931 DIE(aTHX_ PL_no_sock_func, "getservbyport");
4935 #ifdef HAS_GETSERVENT
4936 sent = PerlSock_getservent();
4938 DIE(aTHX_ PL_no_sock_func, "getservent");
4942 if (GIMME != G_ARRAY) {
4943 PUSHs(sv = sv_newmortal());
4945 if (which == OP_GSBYNAME) {
4947 sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
4949 sv_setiv(sv, (IV)(sent->s_port));
4953 sv_setpv(sv, sent->s_name);
4959 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4960 sv_setpv(sv, sent->s_name);
4961 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4962 for (elem = sent->s_aliases; elem && *elem; elem++) {
4963 sv_catpv(sv, *elem);
4965 sv_catpvn(sv, " ", 1);
4967 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4969 sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
4971 sv_setiv(sv, (IV)(sent->s_port));
4973 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4974 sv_setpv(sv, sent->s_proto);
4979 DIE(aTHX_ PL_no_sock_func, "getservent");
4985 #ifdef HAS_SETHOSTENT
4987 PerlSock_sethostent(TOPi);
4990 DIE(aTHX_ PL_no_sock_func, "sethostent");
4996 #ifdef HAS_SETNETENT
4998 PerlSock_setnetent(TOPi);
5001 DIE(aTHX_ PL_no_sock_func, "setnetent");
5007 #ifdef HAS_SETPROTOENT
5009 PerlSock_setprotoent(TOPi);
5012 DIE(aTHX_ PL_no_sock_func, "setprotoent");
5018 #ifdef HAS_SETSERVENT
5020 PerlSock_setservent(TOPi);
5023 DIE(aTHX_ PL_no_sock_func, "setservent");
5029 #ifdef HAS_ENDHOSTENT
5031 PerlSock_endhostent();
5035 DIE(aTHX_ PL_no_sock_func, "endhostent");
5041 #ifdef HAS_ENDNETENT
5043 PerlSock_endnetent();
5047 DIE(aTHX_ PL_no_sock_func, "endnetent");
5053 #ifdef HAS_ENDPROTOENT
5055 PerlSock_endprotoent();
5059 DIE(aTHX_ PL_no_sock_func, "endprotoent");
5065 #ifdef HAS_ENDSERVENT
5067 PerlSock_endservent();
5071 DIE(aTHX_ PL_no_sock_func, "endservent");
5080 DIE(aTHX_ PL_no_func, "getpwnam");
5089 DIE(aTHX_ PL_no_func, "getpwuid");
5097 I32 which = PL_op->op_type;
5100 struct passwd *pwent = NULL;
5102 * We currently support only the SysV getsp* shadow password interface.
5103 * The interface is declared in <shadow.h> and often one needs to link
5104 * with -lsecurity or some such.
5105 * This interface is used at least by Solaris, HP-UX, IRIX, and Linux.
5108 * AIX getpwnam() is clever enough to return the encrypted password
5109 * only if the caller (euid?) is root.
5111 * There are at least two other shadow password APIs. Many platforms
5112 * seem to contain more than one interface for accessing the shadow
5113 * password databases, possibly for compatibility reasons.
5114 * The getsp*() is by far he simplest one, the other two interfaces
5115 * are much more complicated, but also very similar to each other.
5120 * struct pr_passwd *getprpw*();
5121 * The password is in
5122 * char getprpw*(...).ufld.fd_encrypt[]
5123 * Mention HAS_GETPRPWNAM here so that Configure probes for it.
5128 * struct es_passwd *getespw*();
5129 * The password is in
5130 * char *(getespw*(...).ufld.fd_encrypt)
5131 * Mention HAS_GETESPWNAM here so that Configure probes for it.
5133 * Mention I_PROT here so that Configure probes for it.
5135 * In HP-UX for getprpw*() the manual page claims that one should include
5136 * <hpsecurity.h> instead of <sys/security.h>, but that is not needed
5137 * if one includes <shadow.h> as that includes <hpsecurity.h>,
5138 * and pp_sys.c already includes <shadow.h> if there is such.
5140 * Note that <sys/security.h> is already probed for, but currently
5141 * it is only included in special cases.
5143 * In Digital UNIX/Tru64 if using the getespw*() (which seems to be
5144 * be preferred interface, even though also the getprpw*() interface
5145 * is available) one needs to link with -lsecurity -ldb -laud -lm.
5146 * One also needs to call set_auth_parameters() in main() before
5147 * doing anything else, whether one is using getespw*() or getprpw*().
5149 * Note that accessing the shadow databases can be magnitudes
5150 * slower than accessing the standard databases.
5157 pwent = getpwnam(POPpbytex);
5160 pwent = getpwuid((Uid_t)POPi);
5163 # ifdef HAS_GETPWENT
5166 DIE(aTHX_ PL_no_func, "getpwent");
5172 if (GIMME != G_ARRAY) {
5173 PUSHs(sv = sv_newmortal());
5175 if (which == OP_GPWNAM)
5176 # if Uid_t_sign <= 0
5177 sv_setiv(sv, (IV)pwent->pw_uid);
5179 sv_setuv(sv, (UV)pwent->pw_uid);
5182 sv_setpv(sv, pwent->pw_name);
5188 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5189 sv_setpv(sv, pwent->pw_name);
5191 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5193 /* If we have getspnam(), we try to dig up the shadow
5194 * password. If we are underprivileged, the shadow
5195 * interface will set the errno to EACCES or similar,
5196 * and return a null pointer. If this happens, we will
5197 * use the dummy password (usually "*" or "x") from the
5198 * standard password database.
5200 * In theory we could skip the shadow call completely
5201 * if euid != 0 but in practice we cannot know which
5202 * security measures are guarding the shadow databases
5203 * on a random platform.
5205 * Resist the urge to use additional shadow interfaces.
5206 * Divert the urge to writing an extension instead.
5209 # ifdef HAS_GETSPNAM
5211 struct spwd *spwent;
5212 int saverrno; /* Save and restore errno so that
5213 * underprivileged attempts seem
5214 * to have never made the unsccessful
5215 * attempt to retrieve the shadow password. */
5218 spwent = getspnam(pwent->pw_name);
5220 if (spwent && spwent->sp_pwdp)
5221 sv_setpv(sv, spwent->sp_pwdp);
5225 if (!SvPOK(sv)) /* Use the standard password, then. */
5226 sv_setpv(sv, pwent->pw_passwd);
5229 # ifndef INCOMPLETE_TAINTS
5230 /* passwd is tainted because user himself can diddle with it.
5231 * admittedly not much and in a very limited way, but nevertheless. */
5235 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5236 # if Uid_t_sign <= 0
5237 sv_setiv(sv, (IV)pwent->pw_uid);
5239 sv_setuv(sv, (UV)pwent->pw_uid);
5242 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5243 # if Uid_t_sign <= 0
5244 sv_setiv(sv, (IV)pwent->pw_gid);
5246 sv_setuv(sv, (UV)pwent->pw_gid);
5248 /* pw_change, pw_quota, and pw_age are mutually exclusive--
5249 * because of the poor interface of the Perl getpw*(),
5250 * not because there's some standard/convention saying so.
5251 * A better interface would have been to return a hash,
5252 * but we are accursed by our history, alas. --jhi. */
5253 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5255 sv_setiv(sv, (IV)pwent->pw_change);
5258 sv_setiv(sv, (IV)pwent->pw_quota);
5261 sv_setpv(sv, pwent->pw_age);
5266 /* pw_class and pw_comment are mutually exclusive--.
5267 * see the above note for pw_change, pw_quota, and pw_age. */
5268 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5270 sv_setpv(sv, pwent->pw_class);
5273 sv_setpv(sv, pwent->pw_comment);
5277 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5279 sv_setpv(sv, pwent->pw_gecos);
5281 # ifndef INCOMPLETE_TAINTS
5282 /* pw_gecos is tainted because user himself can diddle with it. */
5286 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5287 sv_setpv(sv, pwent->pw_dir);
5289 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5290 sv_setpv(sv, pwent->pw_shell);
5291 # ifndef INCOMPLETE_TAINTS
5292 /* pw_shell is tainted because user himself can diddle with it. */
5297 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5298 sv_setiv(sv, (IV)pwent->pw_expire);
5303 DIE(aTHX_ PL_no_func, "getpwent");
5309 #if defined(HAS_PASSWD) && defined(HAS_SETPWENT)
5314 DIE(aTHX_ PL_no_func, "setpwent");
5320 #if defined(HAS_PASSWD) && defined(HAS_ENDPWENT)
5325 DIE(aTHX_ PL_no_func, "endpwent");
5334 DIE(aTHX_ PL_no_func, "getgrnam");
5343 DIE(aTHX_ PL_no_func, "getgrgid");
5351 I32 which = PL_op->op_type;
5352 register char **elem;
5354 struct group *grent;
5357 if (which == OP_GGRNAM)
5358 grent = (struct group *)getgrnam(POPpbytex);
5359 else if (which == OP_GGRGID)
5360 grent = (struct group *)getgrgid(POPi);
5363 grent = (struct group *)getgrent();
5365 DIE(aTHX_ PL_no_func, "getgrent");
5369 if (GIMME != G_ARRAY) {
5370 PUSHs(sv = sv_newmortal());
5372 if (which == OP_GGRNAM)
5373 sv_setiv(sv, (IV)grent->gr_gid);
5375 sv_setpv(sv, grent->gr_name);
5381 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5382 sv_setpv(sv, grent->gr_name);
5384 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5386 sv_setpv(sv, grent->gr_passwd);
5389 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5390 sv_setiv(sv, (IV)grent->gr_gid);
5392 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5393 for (elem = grent->gr_mem; elem && *elem; elem++) {
5394 sv_catpv(sv, *elem);
5396 sv_catpvn(sv, " ", 1);
5402 DIE(aTHX_ PL_no_func, "getgrent");
5408 #if defined(HAS_GROUP) && defined(HAS_SETGRENT)
5413 DIE(aTHX_ PL_no_func, "setgrent");
5419 #if defined(HAS_GROUP) && defined(HAS_ENDGRENT)
5424 DIE(aTHX_ PL_no_func, "endgrent");
5434 if (!(tmps = PerlProc_getlogin()))
5436 PUSHp(tmps, strlen(tmps));
5439 DIE(aTHX_ PL_no_func, "getlogin");
5443 /* Miscellaneous. */
5448 dSP; dMARK; dORIGMARK; dTARGET;
5449 register I32 items = SP - MARK;
5450 unsigned long a[20];
5456 while (++MARK <= SP) {
5457 if (SvTAINTED(*MARK)) {
5463 TAINT_PROPER("syscall");
5466 /* This probably won't work on machines where sizeof(long) != sizeof(int)
5467 * or where sizeof(long) != sizeof(char*). But such machines will
5468 * not likely have syscall implemented either, so who cares?
5470 while (++MARK <= SP) {
5471 if (SvNIOK(*MARK) || !i)
5472 a[i++] = SvIV(*MARK);
5473 else if (*MARK == &PL_sv_undef)
5476 a[i++] = (unsigned long)SvPV_force(*MARK, n_a);
5482 DIE(aTHX_ "Too many args to syscall");
5484 DIE(aTHX_ "Too few args to syscall");
5486 retval = syscall(a[0]);
5489 retval = syscall(a[0],a[1]);
5492 retval = syscall(a[0],a[1],a[2]);
5495 retval = syscall(a[0],a[1],a[2],a[3]);
5498 retval = syscall(a[0],a[1],a[2],a[3],a[4]);
5501 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5]);
5504 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6]);
5507 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7]);
5511 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8]);
5514 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9]);
5517 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5521 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5525 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5529 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5530 a[10],a[11],a[12],a[13]);
5532 #endif /* atarist */
5538 DIE(aTHX_ PL_no_func, "syscall");
5542 #ifdef FCNTL_EMULATE_FLOCK
5544 /* XXX Emulate flock() with fcntl().
5545 What's really needed is a good file locking module.
5549 fcntl_emulate_flock(int fd, int operation)
5553 switch (operation & ~LOCK_NB) {
5555 flock.l_type = F_RDLCK;
5558 flock.l_type = F_WRLCK;
5561 flock.l_type = F_UNLCK;
5567 flock.l_whence = SEEK_SET;
5568 flock.l_start = flock.l_len = (Off_t)0;
5570 return fcntl(fd, (operation & LOCK_NB) ? F_SETLK : F_SETLKW, &flock);
5573 #endif /* FCNTL_EMULATE_FLOCK */
5575 #ifdef LOCKF_EMULATE_FLOCK
5577 /* XXX Emulate flock() with lockf(). This is just to increase
5578 portability of scripts. The calls are not completely
5579 interchangeable. What's really needed is a good file
5583 /* The lockf() constants might have been defined in <unistd.h>.
5584 Unfortunately, <unistd.h> causes troubles on some mixed
5585 (BSD/POSIX) systems, such as SunOS 4.1.3.
5587 Further, the lockf() constants aren't POSIX, so they might not be
5588 visible if we're compiling with _POSIX_SOURCE defined. Thus, we'll
5589 just stick in the SVID values and be done with it. Sigh.
5593 # define F_ULOCK 0 /* Unlock a previously locked region */
5596 # define F_LOCK 1 /* Lock a region for exclusive use */
5599 # define F_TLOCK 2 /* Test and lock a region for exclusive use */
5602 # define F_TEST 3 /* Test a region for other processes locks */
5606 lockf_emulate_flock(int fd, int operation)
5612 /* flock locks entire file so for lockf we need to do the same */
5614 pos = PerlLIO_lseek(fd, (Off_t)0, SEEK_CUR); /* get pos to restore later */
5615 if (pos > 0) /* is seekable and needs to be repositioned */
5616 if (PerlLIO_lseek(fd, (Off_t)0, SEEK_SET) < 0)
5617 pos = -1; /* seek failed, so don't seek back afterwards */
5620 switch (operation) {
5622 /* LOCK_SH - get a shared lock */
5624 /* LOCK_EX - get an exclusive lock */
5626 i = lockf (fd, F_LOCK, 0);
5629 /* LOCK_SH|LOCK_NB - get a non-blocking shared lock */
5630 case LOCK_SH|LOCK_NB:
5631 /* LOCK_EX|LOCK_NB - get a non-blocking exclusive lock */
5632 case LOCK_EX|LOCK_NB:
5633 i = lockf (fd, F_TLOCK, 0);
5635 if ((errno == EAGAIN) || (errno == EACCES))
5636 errno = EWOULDBLOCK;
5639 /* LOCK_UN - unlock (non-blocking is a no-op) */
5641 case LOCK_UN|LOCK_NB:
5642 i = lockf (fd, F_ULOCK, 0);
5645 /* Default - can't decipher operation */
5652 if (pos > 0) /* need to restore position of the handle */
5653 PerlLIO_lseek(fd, pos, SEEK_SET); /* ignore error here */
5658 #endif /* LOCKF_EMULATE_FLOCK */