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);
84 struct passwd *getpwent (void);
85 #elif defined (VMS) && defined (my_getpwent)
86 struct passwd *Perl_my_getpwent (void);
95 struct group *getgrnam (char *);
96 struct group *getgrgid (Gid_t);
100 struct group *getgrent (void);
106 # if defined(_MSC_VER) || defined(__MINGW32__)
107 # include <sys/utime.h>
114 # ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
117 # define my_chsize PerlLIO_chsize
122 #else /* no flock() */
124 /* fcntl.h might not have been included, even if it exists, because
125 the current Configure only sets I_FCNTL if it's needed to pick up
126 the *_OK constants. Make sure it has been included before testing
127 the fcntl() locking constants. */
128 # if defined(HAS_FCNTL) && !defined(I_FCNTL)
132 # if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
133 # define FLOCK fcntl_emulate_flock
134 # define FCNTL_EMULATE_FLOCK
135 # else /* no flock() or fcntl(F_SETLK,...) */
137 # define FLOCK lockf_emulate_flock
138 # define LOCKF_EMULATE_FLOCK
140 # endif /* no flock() or fcntl(F_SETLK,...) */
143 static int FLOCK (int, int);
146 * These are the flock() constants. Since this sytems doesn't have
147 * flock(), the values of the constants are probably not available.
161 # endif /* emulating flock() */
163 #endif /* no flock() */
166 static char zero_but_true[ZBTLEN + 1] = "0 but true";
168 #if defined(I_SYS_ACCESS) && !defined(R_OK)
169 # include <sys/access.h>
172 #if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
173 # define FD_CLOEXEC 1 /* NeXT needs this */
178 #undef PERL_EFF_ACCESS_R_OK /* EFFective uid/gid ACCESS R_OK */
179 #undef PERL_EFF_ACCESS_W_OK
180 #undef PERL_EFF_ACCESS_X_OK
182 /* F_OK unused: if stat() cannot find it... */
184 #if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
185 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
186 # define PERL_EFF_ACCESS_R_OK(p) (access((p), R_OK | EFF_ONLY_OK))
187 # define PERL_EFF_ACCESS_W_OK(p) (access((p), W_OK | EFF_ONLY_OK))
188 # define PERL_EFF_ACCESS_X_OK(p) (access((p), X_OK | EFF_ONLY_OK))
191 #if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_EACCESS)
192 # ifdef I_SYS_SECURITY
193 # include <sys/security.h>
197 # define PERL_EFF_ACCESS_R_OK(p) (eaccess((p), R_OK, ACC_SELF))
198 # define PERL_EFF_ACCESS_W_OK(p) (eaccess((p), W_OK, ACC_SELF))
199 # define PERL_EFF_ACCESS_X_OK(p) (eaccess((p), X_OK, ACC_SELF))
202 # define PERL_EFF_ACCESS_R_OK(p) (eaccess((p), R_OK))
203 # define PERL_EFF_ACCESS_W_OK(p) (eaccess((p), W_OK))
204 # define PERL_EFF_ACCESS_X_OK(p) (eaccess((p), X_OK))
208 #if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESSX) && defined(ACC_SELF)
210 # define PERL_EFF_ACCESS_R_OK(p) (accessx((p), R_OK, ACC_SELF))
211 # define PERL_EFF_ACCESS_W_OK(p) (accessx((p), W_OK, ACC_SELF))
212 # define PERL_EFF_ACCESS_X_OK(p) (accessx((p), X_OK, ACC_SELF))
215 #if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESS) \
216 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
217 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
220 S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
222 Uid_t ruid = getuid();
223 Uid_t euid = geteuid();
224 Gid_t rgid = getgid();
225 Gid_t egid = getegid();
229 #if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
230 Perl_croak(aTHX_ "switching effective uid is not implemented");
233 if (setreuid(euid, ruid))
236 if (setresuid(euid, ruid, (Uid_t)-1))
239 Perl_croak(aTHX_ "entering effective uid failed");
242 #if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
243 Perl_croak(aTHX_ "switching effective gid is not implemented");
246 if (setregid(egid, rgid))
249 if (setresgid(egid, rgid, (Gid_t)-1))
252 Perl_croak(aTHX_ "entering effective gid failed");
255 res = access(path, mode);
258 if (setreuid(ruid, euid))
261 if (setresuid(ruid, euid, (Uid_t)-1))
264 Perl_croak(aTHX_ "leaving effective uid failed");
267 if (setregid(rgid, egid))
270 if (setresgid(rgid, egid, (Gid_t)-1))
273 Perl_croak(aTHX_ "leaving effective gid failed");
278 # define PERL_EFF_ACCESS_R_OK(p) (emulate_eaccess((p), R_OK))
279 # define PERL_EFF_ACCESS_W_OK(p) (emulate_eaccess((p), W_OK))
280 # define PERL_EFF_ACCESS_X_OK(p) (emulate_eaccess((p), X_OK))
283 #if !defined(PERL_EFF_ACCESS_R_OK)
284 /* With it or without it: anyway you get a warning: either that
285 it is unused, or it is declared static and never defined.
288 S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
290 Perl_croak(aTHX_ "switching effective uid is not implemented");
306 if (PL_op->op_private & OPpOPEN_IN_RAW)
308 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
310 fp = PerlProc_popen(tmps, mode);
313 if (PL_curcop->cop_io) {
314 type = SvPV_nolen(PL_curcop->cop_io);
317 PerlIO_apply_layers(aTHX_ fp,mode,type);
319 if (gimme == G_VOID) {
321 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
325 else if (gimme == G_SCALAR) {
327 PL_rs = &PL_sv_undef;
328 sv_setpv(TARG, ""); /* note that this preserves previous buffer */
329 while (sv_gets(TARG, fp, SvCUR(TARG)) != Nullch)
341 if (sv_gets(sv, fp, 0) == Nullch) {
345 XPUSHs(sv_2mortal(sv));
346 if (SvLEN(sv) - SvCUR(sv) > 20) {
347 SvLEN_set(sv, SvCUR(sv)+1);
348 Renew(SvPVX(sv), SvLEN(sv), char);
353 STATUS_NATIVE_SET(PerlProc_pclose(fp));
354 TAINT; /* "I believe that this is not gratuitous!" */
357 STATUS_NATIVE_SET(-1);
358 if (gimme == G_SCALAR)
368 tryAMAGICunTARGET(iter, -1);
370 /* Note that we only ever get here if File::Glob fails to load
371 * without at the same time croaking, for some reason, or if
372 * perl was built with PERL_EXTERNAL_GLOB */
379 * The external globbing program may use things we can't control,
380 * so for security reasons we must assume the worst.
383 taint_proper(PL_no_security, "glob");
387 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
388 PL_last_in_gv = (GV*)*PL_stack_sp--;
390 SAVESPTR(PL_rs); /* This is not permanent, either. */
391 PL_rs = sv_2mortal(newSVpvn("\000", 1));
394 *SvPVX(PL_rs) = '\n';
398 result = do_readline();
405 PL_last_in_gv = cGVOP_gv;
406 return do_readline();
415 if (SP - MARK != 1) {
417 do_join(TARG, &PL_sv_no, MARK, SP);
424 tmps = SvPV(tmpsv, len);
427 (void)SvUPGRADE(error, SVt_PV);
428 if (SvPOK(error) && SvCUR(error))
429 sv_catpv(error, "\t...caught");
431 tmps = SvPV(tmpsv, len);
434 tmpsv = sv_2mortal(newSVpvn("Warning: something's wrong", 26));
436 Perl_warn(aTHX_ "%"SVf, tmpsv);
448 VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
450 if (SP - MARK != 1) {
452 do_join(TARG, &PL_sv_no, MARK, SP);
454 tmps = SvPV(tmpsv, len);
460 tmps = SvROK(tmpsv) ? Nullch : SvPV(tmpsv, len);
464 (void)SvUPGRADE(error, SVt_PV);
465 if (multiarg ? SvROK(error) : SvROK(tmpsv)) {
467 SvSetSV(error,tmpsv);
468 else if (sv_isobject(error)) {
469 HV *stash = SvSTASH(SvRV(error));
470 GV *gv = gv_fetchmethod(stash, "PROPAGATE");
472 SV *file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
473 SV *line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
480 call_sv((SV*)GvCV(gv),
481 G_SCALAR|G_EVAL|G_KEEPERR);
482 sv_setsv(error,*PL_stack_sp--);
485 DIE(aTHX_ Nullformat);
488 if (SvPOK(error) && SvCUR(error))
489 sv_catpv(error, "\t...propagated");
491 tmps = SvPV(tmpsv, len);
495 tmpsv = sv_2mortal(newSVpvn("Died", 4));
497 DIE(aTHX_ "%"SVf, tmpsv);
517 DIE(aTHX_ PL_no_usym, "filehandle");
518 if ((io = GvIOp(gv)))
519 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
521 if (io && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) {
522 /* Method's args are same as ours ... */
523 /* ... except handle is replaced by the object */
524 *MARK-- = SvTIED_obj((SV*)io, mg);
528 call_method("OPEN", G_SCALAR);
541 tmps = SvPV(sv, len);
542 ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, Nullfp, MARK+1, (SP-MARK));
545 PUSHi( (I32)PL_forkprocess );
546 else if (PL_forkprocess == 0) /* we are a new child */
565 if (gv && (io = GvIO(gv))
566 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
569 XPUSHs(SvTIED_obj((SV*)io, mg));
572 call_method("CLOSE", G_SCALAR);
578 PUSHs(boolSV(do_close(gv, TRUE)));
598 if (SvTYPE(rgv) != SVt_PVGV || SvTYPE(wgv) != SVt_PVGV)
599 DIE(aTHX_ PL_no_usym, "filehandle");
604 do_close(rgv, FALSE);
606 do_close(wgv, FALSE);
608 if (PerlProc_pipe(fd) < 0)
611 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPESOCK_MODE);
612 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPESOCK_MODE);
613 IoOFP(rstio) = IoIFP(rstio);
614 IoIFP(wstio) = IoOFP(wstio);
615 IoTYPE(rstio) = IoTYPE_RDONLY;
616 IoTYPE(wstio) = IoTYPE_WRONLY;
618 if (!IoIFP(rstio) || !IoOFP(wstio)) {
619 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
620 else PerlLIO_close(fd[0]);
621 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
622 else PerlLIO_close(fd[1]);
625 #if defined(HAS_FCNTL) && defined(F_SETFD)
626 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
627 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
634 DIE(aTHX_ PL_no_func, "pipe");
650 if (gv && (io = GvIO(gv))
651 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
654 XPUSHs(SvTIED_obj((SV*)io, mg));
657 call_method("FILENO", G_SCALAR);
663 if (!gv || !(io = GvIO(gv)) || !(fp = IoIFP(io))) {
664 /* Can't do this because people seem to do things like
665 defined(fileno($foo)) to check whether $foo is a valid fh.
666 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
667 report_evil_fh(gv, io, PL_op->op_type);
672 PUSHi(PerlIO_fileno(fp));
683 anum = PerlLIO_umask(0);
684 (void)PerlLIO_umask(anum);
687 anum = PerlLIO_umask(POPi);
688 TAINT_PROPER("umask");
691 /* Only DIE if trying to restrict permissions on `user' (self).
692 * Otherwise it's harmless and more useful to just return undef
693 * since 'group' and 'other' concepts probably don't exist here. */
694 if (MAXARG >= 1 && (POPi & 0700))
695 DIE(aTHX_ "umask not implemented");
696 XPUSHs(&PL_sv_undef);
718 if (gv && (io = GvIO(gv))
719 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
722 XPUSHs(SvTIED_obj((SV*)io, mg));
727 call_method("BINMODE", G_SCALAR);
734 if (!(io = GvIO(gv)) || !(fp = IoIFP(io))) {
735 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
736 report_evil_fh(gv, io, PL_op->op_type);
737 SETERRNO(EBADF,RMS_IFI);
742 if (PerlIO_binmode(aTHX_ fp,IoTYPE(io),mode_from_discipline(discp),
743 (discp) ? SvPV_nolen(discp) : Nullch)) {
761 I32 markoff = MARK - PL_stack_base;
763 int how = PERL_MAGIC_tied;
767 switch(SvTYPE(varsv)) {
769 methname = "TIEHASH";
770 HvEITER((HV *)varsv) = Null(HE *);
773 methname = "TIEARRAY";
776 #ifdef GV_UNIQUE_CHECK
777 if (GvUNIQUE((GV*)varsv)) {
778 Perl_croak(aTHX_ "Attempt to tie unique GV");
781 methname = "TIEHANDLE";
782 how = PERL_MAGIC_tiedscalar;
783 /* For tied filehandles, we apply tiedscalar magic to the IO
784 slot of the GP rather than the GV itself. AMS 20010812 */
786 GvIOp(varsv) = newIO();
787 varsv = (SV *)GvIOp(varsv);
790 methname = "TIESCALAR";
791 how = PERL_MAGIC_tiedscalar;
795 if (sv_isobject(*MARK)) {
797 PUSHSTACKi(PERLSI_MAGIC);
799 EXTEND(SP,(I32)items);
803 call_method(methname, G_SCALAR);
806 /* Not clear why we don't call call_method here too.
807 * perhaps to get different error message ?
809 stash = gv_stashsv(*MARK, FALSE);
810 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
811 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
815 PUSHSTACKi(PERLSI_MAGIC);
817 EXTEND(SP,(I32)items);
821 call_sv((SV*)GvCV(gv), G_SCALAR);
827 if (sv_isobject(sv)) {
828 sv_unmagic(varsv, how);
829 /* Croak if a self-tie on an aggregate is attempted. */
830 if (varsv == SvRV(sv) &&
831 (SvTYPE(varsv) == SVt_PVAV ||
832 SvTYPE(varsv) == SVt_PVHV))
834 "Self-ties of arrays and hashes are not supported");
835 sv_magic(varsv, (SvRV(sv) == varsv ? Nullsv : sv), how, Nullch, 0);
838 SP = PL_stack_base + markoff;
848 char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
849 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
851 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
854 if ((mg = SvTIED_mg(sv, how))) {
855 SV *obj = SvRV(mg->mg_obj);
859 if ((gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE)) &&
860 isGV(gv) && (cv = GvCV(gv))) {
862 XPUSHs(SvTIED_obj((SV*)gv, mg));
863 XPUSHs(sv_2mortal(newSViv(SvREFCNT(obj)-1)));
866 call_sv((SV *)cv, G_VOID);
870 else if (ckWARN(WARN_UNTIE)) {
871 if (mg && SvREFCNT(obj) > 1)
872 Perl_warner(aTHX_ packWARN(WARN_UNTIE),
873 "untie attempted while %"UVuf" inner references still exist",
874 (UV)SvREFCNT(obj) - 1 ) ;
877 sv_unmagic(sv, how) ;
887 char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
888 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
890 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
893 if ((mg = SvTIED_mg(sv, how))) {
894 SV *osv = SvTIED_obj(sv, mg);
895 if (osv == mg->mg_obj)
896 osv = sv_mortalcopy(osv);
914 sv = sv_mortalcopy(&PL_sv_no);
915 sv_setpv(sv, "AnyDBM_File");
916 stash = gv_stashsv(sv, FALSE);
917 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
919 require_pv("AnyDBM_File.pm");
921 if (!(gv = gv_fetchmethod(stash, "TIEHASH")))
922 DIE(aTHX_ "No dbm on this machine");
932 PUSHs(sv_2mortal(newSVuv(O_RDWR|O_CREAT)));
934 PUSHs(sv_2mortal(newSVuv(O_RDWR)));
937 call_sv((SV*)GvCV(gv), G_SCALAR);
940 if (!sv_isobject(TOPs)) {
945 PUSHs(sv_2mortal(newSVuv(O_RDONLY)));
948 call_sv((SV*)GvCV(gv), G_SCALAR);
952 if (sv_isobject(TOPs)) {
953 sv_unmagic((SV *) hv, PERL_MAGIC_tied);
954 sv_magic((SV*)hv, TOPs, PERL_MAGIC_tied, Nullch, 0);
976 struct timeval timebuf;
977 struct timeval *tbuf = &timebuf;
981 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
986 # if BYTEORDER & 0xf0000
987 # define ORDERBYTE (0x88888888 - BYTEORDER)
989 # define ORDERBYTE (0x4444 - BYTEORDER)
995 for (i = 1; i <= 3; i++) {
1003 /* little endians can use vecs directly */
1004 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1011 masksize = NFDBITS / NBBY;
1013 masksize = sizeof(long); /* documented int, everyone seems to use long */
1015 Zero(&fd_sets[0], 4, char*);
1018 # if SELECT_MIN_BITS > 1
1019 /* If SELECT_MIN_BITS is greater than one we most probably will want
1020 * to align the sizes with SELECT_MIN_BITS/8 because for example
1021 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
1022 * UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
1023 * on (sets/tests/clears bits) is 32 bits. */
1024 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
1026 growsize = sizeof(fd_set);
1034 timebuf.tv_sec = (long)value;
1035 value -= (NV)timebuf.tv_sec;
1036 timebuf.tv_usec = (long)(value * 1000000.0);
1039 tbuf = Null(struct timeval*);
1041 for (i = 1; i <= 3; i++) {
1047 else if (!SvPOK(sv))
1048 SvPV_force(sv,n_a); /* force string conversion */
1051 Sv_Grow(sv, growsize);
1055 while (++j <= growsize) {
1059 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1061 New(403, fd_sets[i], growsize, char);
1062 for (offset = 0; offset < growsize; offset += masksize) {
1063 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1064 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1067 fd_sets[i] = SvPVX(sv);
1071 nfound = PerlSock_select(
1073 (Select_fd_set_t) fd_sets[1],
1074 (Select_fd_set_t) fd_sets[2],
1075 (Select_fd_set_t) fd_sets[3],
1077 for (i = 1; i <= 3; i++) {
1080 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1082 for (offset = 0; offset < growsize; offset += masksize) {
1083 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1084 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1086 Safefree(fd_sets[i]);
1093 if (GIMME == G_ARRAY && tbuf) {
1094 value = (NV)(timebuf.tv_sec) +
1095 (NV)(timebuf.tv_usec) / 1000000.0;
1096 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
1097 sv_setnv(sv, value);
1101 DIE(aTHX_ "select not implemented");
1106 Perl_setdefout(pTHX_ GV *gv)
1109 (void)SvREFCNT_inc(gv);
1111 SvREFCNT_dec(PL_defoutgv);
1118 GV *newdefout, *egv;
1121 newdefout = (PL_op->op_private > 0) ? ((GV *) POPs) : (GV *) NULL;
1123 egv = GvEGV(PL_defoutgv);
1128 XPUSHs(&PL_sv_undef);
1130 GV **gvp = (GV**)hv_fetch(hv, GvNAME(egv), GvNAMELEN(egv), FALSE);
1131 if (gvp && *gvp == egv) {
1132 gv_efullname4(TARG, PL_defoutgv, Nullch, TRUE);
1136 XPUSHs(sv_2mortal(newRV((SV*)egv)));
1141 if (!GvIO(newdefout))
1142 gv_IOadd(newdefout);
1143 setdefout(newdefout);
1161 if (gv && (io = GvIO(gv))
1162 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1164 I32 gimme = GIMME_V;
1166 XPUSHs(SvTIED_obj((SV*)io, mg));
1169 call_method("GETC", gimme);
1172 if (gimme == G_SCALAR)
1173 SvSetMagicSV_nosteal(TARG, TOPs);
1176 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
1177 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)
1178 && (!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY)))
1179 report_evil_fh(gv, io, PL_op->op_type);
1180 SETERRNO(EBADF,RMS_IFI);
1184 sv_setpv(TARG, " ");
1185 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
1186 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1187 /* Find out how many bytes the char needs */
1188 Size_t len = UTF8SKIP(SvPVX(TARG));
1191 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1192 SvCUR_set(TARG,1+len);
1202 return pp_sysread();
1206 S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
1208 register PERL_CONTEXT *cx;
1209 I32 gimme = GIMME_V;
1215 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
1217 PAD_SET_CUR(CvPADLIST(cv), 1);
1219 setdefout(gv); /* locally select filehandle so $% et al work */
1252 SV *tmpsv = sv_newmortal();
1253 gv_efullname4(tmpsv, fgv, Nullch, FALSE);
1254 name = SvPV_nolen(tmpsv);
1257 DIE(aTHX_ "Undefined format \"%s\" called", name);
1258 DIE(aTHX_ "Not a format reference");
1261 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
1263 IoFLAGS(io) &= ~IOf_DIDTOP;
1264 return doform(cv,gv,PL_op->op_next);
1270 GV *gv = cxstack[cxstack_ix].blk_sub.gv;
1271 register IO *io = GvIOp(gv);
1272 PerlIO *ofp = IoOFP(io);
1276 register PERL_CONTEXT *cx;
1278 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
1279 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
1282 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1283 PL_formtarget != PL_toptarget)
1287 if (!IoTOP_GV(io)) {
1291 if (!IoTOP_NAME(io)) {
1292 if (!IoFMT_NAME(io))
1293 IoFMT_NAME(io) = savepv(GvNAME(gv));
1294 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%s_TOP", IoFMT_NAME(io)));
1295 topgv = gv_fetchpv(SvPVX(topname), FALSE, SVt_PVFM);
1296 if ((topgv && GvFORM(topgv)) ||
1297 !gv_fetchpv("top",FALSE,SVt_PVFM))
1298 IoTOP_NAME(io) = savepv(SvPVX(topname));
1300 IoTOP_NAME(io) = savepv("top");
1302 topgv = gv_fetchpv(IoTOP_NAME(io),FALSE, SVt_PVFM);
1303 if (!topgv || !GvFORM(topgv)) {
1304 IoLINES_LEFT(io) = 100000000;
1307 IoTOP_GV(io) = topgv;
1309 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1310 I32 lines = IoLINES_LEFT(io);
1311 char *s = SvPVX(PL_formtarget);
1312 if (lines <= 0) /* Yow, header didn't even fit!!! */
1314 while (lines-- > 0) {
1315 s = strchr(s, '\n');
1321 STRLEN save = SvCUR(PL_formtarget);
1322 SvCUR_set(PL_formtarget, s - SvPVX(PL_formtarget));
1323 do_print(PL_formtarget, ofp);
1324 SvCUR_set(PL_formtarget, save);
1325 sv_chop(PL_formtarget, s);
1326 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
1329 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
1330 do_print(PL_formfeed, ofp);
1331 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1333 PL_formtarget = PL_toptarget;
1334 IoFLAGS(io) |= IOf_DIDTOP;
1337 DIE(aTHX_ "bad top format reference");
1342 SV *sv = sv_newmortal();
1343 gv_efullname4(sv, fgv, Nullch, FALSE);
1344 name = SvPV_nolen(sv);
1347 DIE(aTHX_ "Undefined top format \"%s\" called",name);
1350 DIE(aTHX_ "Undefined top format called");
1354 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
1355 return doform(cv,gv,PL_op);
1359 POPBLOCK(cx,PL_curpm);
1365 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
1367 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
1368 else if (ckWARN(WARN_CLOSED))
1369 report_evil_fh(gv, io, PL_op->op_type);
1374 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
1375 if (ckWARN(WARN_IO))
1376 Perl_warner(aTHX_ packWARN(WARN_IO), "page overflow");
1378 if (!do_print(PL_formtarget, fp))
1381 FmLINES(PL_formtarget) = 0;
1382 SvCUR_set(PL_formtarget, 0);
1383 *SvEND(PL_formtarget) = '\0';
1384 if (IoFLAGS(io) & IOf_FLUSH)
1385 (void)PerlIO_flush(fp);
1390 PL_formtarget = PL_bodytarget;
1392 return pop_return();
1397 dSP; dMARK; dORIGMARK;
1404 if (PL_op->op_flags & OPf_STACKED)
1409 if (gv && (io = GvIO(gv))
1410 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1412 if (MARK == ORIGMARK) {
1415 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1419 *MARK = SvTIED_obj((SV*)io, mg);
1422 call_method("PRINTF", G_SCALAR);
1425 MARK = ORIGMARK + 1;
1432 if (!(io = GvIO(gv))) {
1433 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1434 report_evil_fh(gv, io, PL_op->op_type);
1435 SETERRNO(EBADF,RMS_IFI);
1438 else if (!(fp = IoOFP(io))) {
1439 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
1441 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
1442 else if (ckWARN(WARN_CLOSED))
1443 report_evil_fh(gv, io, PL_op->op_type);
1445 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
1449 do_sprintf(sv, SP - MARK, MARK + 1);
1450 if (!do_print(sv, fp))
1453 if (IoFLAGS(io) & IOf_FLUSH)
1454 if (PerlIO_flush(fp) == EOF)
1465 PUSHs(&PL_sv_undef);
1486 /* Need TIEHANDLE method ? */
1488 tmps = SvPV(sv, len);
1489 if (do_open(gv, tmps, len, TRUE, mode, perm, Nullfp)) {
1490 IoLINES(GvIOp(gv)) = 0;
1494 PUSHs(&PL_sv_undef);
1501 dSP; dMARK; dORIGMARK; dTARGET;
1508 Sock_size_t bufsize;
1515 bool charstart = FALSE;
1516 STRLEN charskip = 0;
1520 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1521 && gv && (io = GvIO(gv))
1522 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1527 *MARK = SvTIED_obj((SV*)io, mg);
1529 call_method("READ", G_SCALAR);
1542 sv_setpvn(bufsv, "", 0);
1543 length = SvIVx(*++MARK);
1546 offset = SvIVx(*++MARK);
1550 if (!io || !IoIFP(io)) {
1551 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1552 report_evil_fh(gv, io, PL_op->op_type);
1553 SETERRNO(EBADF,RMS_IFI);
1556 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
1557 buffer = SvPVutf8_force(bufsv, blen);
1558 /* UTF8 may not have been set if they are all low bytes */
1562 buffer = SvPV_force(bufsv, blen);
1565 DIE(aTHX_ "Negative length");
1573 if (PL_op->op_type == OP_RECV) {
1574 char namebuf[MAXPATHLEN];
1575 #if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
1576 bufsize = sizeof (struct sockaddr_in);
1578 bufsize = sizeof namebuf;
1580 #ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1584 buffer = SvGROW(bufsv, (STRLEN)(length+1));
1585 /* 'offset' means 'flags' here */
1586 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
1587 (struct sockaddr *)namebuf, &bufsize);
1591 /* Bogus return without padding */
1592 bufsize = sizeof (struct sockaddr_in);
1594 SvCUR_set(bufsv, count);
1595 *SvEND(bufsv) = '\0';
1596 (void)SvPOK_only(bufsv);
1600 /* This should not be marked tainted if the fp is marked clean */
1601 if (!(IoFLAGS(io) & IOf_UNTAINT))
1602 SvTAINTED_on(bufsv);
1604 sv_setpvn(TARG, namebuf, bufsize);
1609 if (PL_op->op_type == OP_RECV)
1610 DIE(aTHX_ PL_no_sock_func, "recv");
1612 if (DO_UTF8(bufsv)) {
1613 /* offset adjust in characters not bytes */
1614 blen = sv_len_utf8(bufsv);
1617 if (-offset > (int)blen)
1618 DIE(aTHX_ "Offset outside string");
1621 if (DO_UTF8(bufsv)) {
1622 /* convert offset-as-chars to offset-as-bytes */
1623 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
1626 bufsize = SvCUR(bufsv);
1627 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
1628 if (offset > bufsize) { /* Zero any newly allocated space */
1629 Zero(buffer+bufsize, offset-bufsize, char);
1631 buffer = buffer + offset;
1633 if (PL_op->op_type == OP_SYSREAD) {
1634 #ifdef PERL_SOCK_SYSREAD_IS_RECV
1635 if (IoTYPE(io) == IoTYPE_SOCKET) {
1636 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1642 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1647 #ifdef HAS_SOCKET__bad_code_maybe
1648 if (IoTYPE(io) == IoTYPE_SOCKET) {
1649 char namebuf[MAXPATHLEN];
1650 #if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1651 bufsize = sizeof (struct sockaddr_in);
1653 bufsize = sizeof namebuf;
1655 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
1656 (struct sockaddr *)namebuf, &bufsize);
1661 count = PerlIO_read(IoIFP(io), buffer, length);
1662 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1663 if (count == 0 && PerlIO_error(IoIFP(io)))
1667 if ((IoTYPE(io) == IoTYPE_WRONLY) && ckWARN(WARN_IO))
1668 report_evil_fh(gv, io, OP_phoney_OUTPUT_ONLY);
1671 SvCUR_set(bufsv, count+(buffer - SvPVX(bufsv)));
1672 *SvEND(bufsv) = '\0';
1673 (void)SvPOK_only(bufsv);
1674 if (fp_utf8 && !IN_BYTES) {
1675 /* Look at utf8 we got back and count the characters */
1676 char *bend = buffer + count;
1677 while (buffer < bend) {
1679 skip = UTF8SKIP(buffer);
1682 if (buffer - charskip + skip > bend) {
1683 /* partial character - try for rest of it */
1684 length = skip - (bend-buffer);
1685 offset = bend - SvPVX(bufsv);
1697 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1698 provided amount read (count) was what was requested (length)
1700 if (got < wanted && count == length) {
1701 length = wanted - got;
1702 offset = bend - SvPVX(bufsv);
1705 /* return value is character count */
1710 /* This should not be marked tainted if the fp is marked clean */
1711 if (!(IoFLAGS(io) & IOf_UNTAINT))
1712 SvTAINTED_on(bufsv);
1725 int items = (SP - PL_stack_base) - TOPMARK;
1729 sv = sv_2mortal(newSViv(sv_len(*SP)));
1738 dSP; dMARK; dORIGMARK; dTARGET;
1749 if (PL_op->op_type == OP_SYSWRITE
1750 && gv && (io = GvIO(gv))
1751 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1756 *MARK = SvTIED_obj((SV*)io, mg);
1758 call_method("WRITE", G_SCALAR);
1769 #if Size_t_size > IVSIZE
1770 length = (Size_t)SvNVx(*++MARK);
1772 length = (Size_t)SvIVx(*++MARK);
1774 if ((SSize_t)length < 0)
1775 DIE(aTHX_ "Negative length");
1778 if (!io || !IoIFP(io)) {
1780 if (ckWARN(WARN_CLOSED))
1781 report_evil_fh(gv, io, PL_op->op_type);
1782 SETERRNO(EBADF,RMS_IFI);
1786 if (PerlIO_isutf8(IoIFP(io))) {
1787 buffer = SvPVutf8(bufsv, blen);
1791 sv_utf8_downgrade(bufsv, FALSE);
1792 buffer = SvPV(bufsv, blen);
1795 if (PL_op->op_type == OP_SYSWRITE) {
1797 if (DO_UTF8(bufsv)) {
1798 /* length and offset are in chars */
1799 blen = sv_len_utf8(bufsv);
1802 offset = SvIVx(*++MARK);
1804 if (-offset > (IV)blen)
1805 DIE(aTHX_ "Offset outside string");
1807 } else if (offset >= (IV)blen && blen > 0)
1808 DIE(aTHX_ "Offset outside string");
1811 if (length > blen - offset)
1812 length = blen - offset;
1813 if (DO_UTF8(bufsv)) {
1814 buffer = (char*)utf8_hop((U8 *)buffer, offset);
1815 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1818 buffer = buffer+offset;
1820 #ifdef PERL_SOCK_SYSWRITE_IS_SEND
1821 if (IoTYPE(io) == IoTYPE_SOCKET) {
1822 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
1828 /* See the note at doio.c:do_print about filesize limits. --jhi */
1829 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
1834 else if (SP > MARK) {
1837 sockbuf = SvPVx(*++MARK, mlen);
1838 /* length is really flags */
1839 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1840 length, (struct sockaddr *)sockbuf, mlen);
1843 /* length is really flags */
1844 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, length);
1847 DIE(aTHX_ PL_no_sock_func, "send");
1853 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
1854 #if Size_t_size > IVSIZE
1868 return pp_sysread();
1879 if (PL_op->op_flags & OPf_SPECIAL) { /* eof() */
1881 gv = PL_last_in_gv = GvEGV(PL_argvgv);
1883 if (io && !IoIFP(io)) {
1884 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
1886 IoFLAGS(io) &= ~IOf_START;
1887 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, Nullfp);
1888 sv_setpvn(GvSV(gv), "-", 1);
1889 SvSETMAGIC(GvSV(gv));
1891 else if (!nextargv(gv))
1896 gv = PL_last_in_gv; /* eof */
1899 gv = PL_last_in_gv = (GV*)POPs; /* eof(FH) */
1901 if (gv && (io = GvIO(gv))
1902 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1905 XPUSHs(SvTIED_obj((SV*)io, mg));
1908 call_method("EOF", G_SCALAR);
1914 PUSHs(boolSV(!gv || do_eof(gv)));
1928 gv = PL_last_in_gv = (GV*)POPs;
1930 if (gv && (io = GvIO(gv))
1931 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1934 XPUSHs(SvTIED_obj((SV*)io, mg));
1937 call_method("TELL", G_SCALAR);
1943 #if LSEEKSIZE > IVSIZE
1944 PUSHn( do_tell(gv) );
1946 PUSHi( do_tell(gv) );
1953 return pp_sysseek();
1962 #if LSEEKSIZE > IVSIZE
1963 Off_t offset = (Off_t)SvNVx(POPs);
1965 Off_t offset = (Off_t)SvIVx(POPs);
1969 gv = PL_last_in_gv = (GV*)POPs;
1971 if (gv && (io = GvIO(gv))
1972 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1975 XPUSHs(SvTIED_obj((SV*)io, mg));
1976 #if LSEEKSIZE > IVSIZE
1977 XPUSHs(sv_2mortal(newSVnv((NV) offset)));
1979 XPUSHs(sv_2mortal(newSViv(offset)));
1981 XPUSHs(sv_2mortal(newSViv(whence)));
1984 call_method("SEEK", G_SCALAR);
1990 if (PL_op->op_type == OP_SEEK)
1991 PUSHs(boolSV(do_seek(gv, offset, whence)));
1993 Off_t sought = do_sysseek(gv, offset, whence);
1995 PUSHs(&PL_sv_undef);
1998 #if LSEEKSIZE > IVSIZE
2003 : newSVpvn(zero_but_true, ZBTLEN);
2004 PUSHs(sv_2mortal(sv));
2013 /* There seems to be no consensus on the length type of truncate()
2014 * and ftruncate(), both off_t and size_t have supporters. In
2015 * general one would think that when using large files, off_t is
2016 * at least as wide as size_t, so using an off_t should be okay. */
2017 /* XXX Configure probe for the length type of *truncate() needed XXX */
2020 #if Off_t_size > IVSIZE
2025 /* Checking for length < 0 is problematic as the type might or
2026 * might not be signed: if it is not, clever compilers will moan. */
2027 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
2029 #if defined(HAS_TRUNCATE) || defined(HAS_CHSIZE) || defined(F_FREESP)
2035 if (PL_op->op_flags & OPf_SPECIAL) {
2036 tmpgv = gv_fetchpv(POPpx, FALSE, SVt_PVIO);
2039 TAINT_PROPER("truncate");
2040 if (!GvIO(tmpgv) || !IoIFP(GvIOp(tmpgv)))
2043 PerlIO_flush(IoIFP(GvIOp(tmpgv)));
2045 if (ftruncate(PerlIO_fileno(IoIFP(GvIOn(tmpgv))), len) < 0)
2047 if (my_chsize(PerlIO_fileno(IoIFP(GvIOn(tmpgv))), len) < 0)
2056 if (SvTYPE(sv) == SVt_PVGV) {
2057 tmpgv = (GV*)sv; /* *main::FRED for example */
2060 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2061 tmpgv = (GV*) SvRV(sv); /* \*main::FRED for example */
2065 name = SvPV(sv, n_a);
2066 TAINT_PROPER("truncate");
2068 if (truncate(name, len) < 0)
2074 if ((tmpfd = PerlLIO_open(name, O_RDWR)) < 0)
2077 if (my_chsize(tmpfd, len) < 0)
2079 PerlLIO_close(tmpfd);
2088 SETERRNO(EBADF,RMS_IFI);
2092 DIE(aTHX_ "truncate not implemented");
2105 unsigned int func = POPu;
2106 int optype = PL_op->op_type;
2110 IO *io = gv ? GvIOn(gv) : 0;
2112 if (!io || !argsv || !IoIFP(io)) {
2113 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2114 report_evil_fh(gv, io, PL_op->op_type);
2115 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
2119 if (SvPOK(argsv) || !SvNIOK(argsv)) {
2122 s = SvPV_force(argsv, len);
2123 need = IOCPARM_LEN(func);
2125 s = Sv_Grow(argsv, need + 1);
2126 SvCUR_set(argsv, need);
2129 s[SvCUR(argsv)] = 17; /* a little sanity check here */
2132 retval = SvIV(argsv);
2133 s = INT2PTR(char*,retval); /* ouch */
2136 TAINT_PROPER(optype == OP_IOCTL ? "ioctl" : "fcntl");
2138 if (optype == OP_IOCTL)
2140 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
2142 DIE(aTHX_ "ioctl is not implemented");
2146 DIE(aTHX_ "fcntl is not implemented");
2148 #if defined(OS2) && defined(__EMX__)
2149 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
2151 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
2155 if (s[SvCUR(argsv)] != 17)
2156 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
2158 s[SvCUR(argsv)] = 0; /* put our null back */
2159 SvSETMAGIC(argsv); /* Assume it has changed */
2168 PUSHp(zero_but_true, ZBTLEN);
2189 if (gv && (io = GvIO(gv)))
2196 (void)PerlIO_flush(fp);
2197 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
2200 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2201 report_evil_fh(gv, io, PL_op->op_type);
2203 SETERRNO(EBADF,RMS_IFI);
2208 DIE(aTHX_ PL_no_func, "flock()");
2220 int protocol = POPi;
2226 io = gv ? GvIOn(gv) : NULL;
2229 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2230 report_evil_fh(gv, io, PL_op->op_type);
2232 do_close(gv, FALSE);
2233 SETERRNO(EBADF,LIB_INVARG);
2238 do_close(gv, FALSE);
2240 TAINT_PROPER("socket");
2241 fd = PerlSock_socket(domain, type, protocol);
2244 IoIFP(io) = PerlIO_fdopen(fd, "r"PIPESOCK_MODE); /* stdio gets confused about sockets */
2245 IoOFP(io) = PerlIO_fdopen(fd, "w"PIPESOCK_MODE);
2246 IoTYPE(io) = IoTYPE_SOCKET;
2247 if (!IoIFP(io) || !IoOFP(io)) {
2248 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2249 if (IoOFP(io)) PerlIO_close(IoOFP(io));
2250 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
2253 #if defined(HAS_FCNTL) && defined(F_SETFD)
2254 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2258 setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
2263 DIE(aTHX_ PL_no_sock_func, "socket");
2269 #if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
2275 int protocol = POPi;
2282 io1 = gv1 ? GvIOn(gv1) : NULL;
2283 io2 = gv2 ? GvIOn(gv2) : NULL;
2284 if (!gv1 || !gv2 || !io1 || !io2) {
2285 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
2287 report_evil_fh(gv1, io1, PL_op->op_type);
2289 report_evil_fh(gv1, io2, PL_op->op_type);
2292 do_close(gv1, FALSE);
2294 do_close(gv2, FALSE);
2299 do_close(gv1, FALSE);
2301 do_close(gv2, FALSE);
2303 TAINT_PROPER("socketpair");
2304 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
2306 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"PIPESOCK_MODE);
2307 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"PIPESOCK_MODE);
2308 IoTYPE(io1) = IoTYPE_SOCKET;
2309 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"PIPESOCK_MODE);
2310 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"PIPESOCK_MODE);
2311 IoTYPE(io2) = IoTYPE_SOCKET;
2312 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
2313 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2314 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
2315 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
2316 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2317 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
2318 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
2321 #if defined(HAS_FCNTL) && defined(F_SETFD)
2322 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2323 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2328 DIE(aTHX_ PL_no_sock_func, "socketpair");
2336 #ifdef MPE /* Requires PRIV mode to bind() to ports < 1024 */
2337 extern void GETPRIVMODE();
2338 extern void GETUSERMODE();
2343 register IO *io = GvIOn(gv);
2347 int mpeprivmode = 0;
2350 if (!io || !IoIFP(io))
2353 addr = SvPV(addrsv, len);
2354 TAINT_PROPER("bind");
2355 #ifdef MPE /* Deal with MPE bind() peculiarities */
2356 if (((struct sockaddr *)addr)->sa_family == AF_INET) {
2357 /* The address *MUST* stupidly be zero. */
2358 ((struct sockaddr_in *)addr)->sin_addr.s_addr = INADDR_ANY;
2359 /* PRIV mode is required to bind() to ports < 1024. */
2360 if (((struct sockaddr_in *)addr)->sin_port < 1024 &&
2361 ((struct sockaddr_in *)addr)->sin_port > 0) {
2362 GETPRIVMODE(); /* If this fails, we are aborted by MPE/iX. */
2367 if (PerlSock_bind(PerlIO_fileno(IoIFP(io)),
2368 (struct sockaddr *)addr, len) >= 0)
2371 #ifdef MPE /* Switch back to USER mode */
2382 if (ckWARN(WARN_CLOSED))
2383 report_evil_fh(gv, io, PL_op->op_type);
2384 SETERRNO(EBADF,SS_IVCHAN);
2387 DIE(aTHX_ PL_no_sock_func, "bind");
2398 register IO *io = GvIOn(gv);
2401 if (!io || !IoIFP(io))
2404 addr = SvPV(addrsv, len);
2405 TAINT_PROPER("connect");
2406 if (PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
2412 if (ckWARN(WARN_CLOSED))
2413 report_evil_fh(gv, io, PL_op->op_type);
2414 SETERRNO(EBADF,SS_IVCHAN);
2417 DIE(aTHX_ PL_no_sock_func, "connect");
2427 register IO *io = gv ? GvIOn(gv) : NULL;
2429 if (!gv || !io || !IoIFP(io))
2432 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
2438 if (ckWARN(WARN_CLOSED))
2439 report_evil_fh(gv, io, PL_op->op_type);
2440 SETERRNO(EBADF,SS_IVCHAN);
2443 DIE(aTHX_ PL_no_sock_func, "listen");
2455 struct sockaddr saddr; /* use a struct to avoid alignment problems */
2456 Sock_size_t len = sizeof saddr;
2469 if (!gstio || !IoIFP(gstio))
2473 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *)&saddr, &len);
2477 do_close(ngv, FALSE);
2478 IoIFP(nstio) = PerlIO_fdopen(fd, "r"PIPESOCK_MODE);
2479 /* FIXME: we dup(fd) here so that refcounting of fd's does not inhibit
2480 fclose of IoOFP's FILE * - and hence leak memory.
2481 Special treatment of _this_ case of IoIFP != IoOFP seems wrong.
2483 IoOFP(nstio) = PerlIO_fdopen(fd2 = PerlLIO_dup(fd), "w"PIPESOCK_MODE);
2484 IoTYPE(nstio) = IoTYPE_SOCKET;
2485 if (!IoIFP(nstio) || !IoOFP(nstio)) {
2486 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2487 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
2488 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
2491 #if defined(HAS_FCNTL) && defined(F_SETFD)
2492 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2493 fcntl(fd2, F_SETFD, fd2 > PL_maxsysfd); /* ensure close-on-exec */
2497 len = sizeof saddr; /* EPOC somehow truncates info */
2498 setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
2501 PUSHp((char *)&saddr, len);
2505 if (ckWARN(WARN_CLOSED))
2506 report_evil_fh(ggv, ggv ? GvIO(ggv) : 0, PL_op->op_type);
2507 SETERRNO(EBADF,SS_IVCHAN);
2513 DIE(aTHX_ PL_no_sock_func, "accept");
2523 register IO *io = GvIOn(gv);
2525 if (!io || !IoIFP(io))
2528 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
2532 if (ckWARN(WARN_CLOSED))
2533 report_evil_fh(gv, io, PL_op->op_type);
2534 SETERRNO(EBADF,SS_IVCHAN);
2537 DIE(aTHX_ PL_no_sock_func, "shutdown");
2544 return pp_ssockopt();
2546 DIE(aTHX_ PL_no_sock_func, "getsockopt");
2554 int optype = PL_op->op_type;
2557 unsigned int optname;
2563 if (optype == OP_GSOCKOPT)
2564 sv = sv_2mortal(NEWSV(22, 257));
2567 optname = (unsigned int) POPi;
2568 lvl = (unsigned int) POPi;
2572 if (!io || !IoIFP(io))
2575 fd = PerlIO_fileno(IoIFP(io));
2579 (void)SvPOK_only(sv);
2583 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
2598 aint = (int)SvIV(sv);
2602 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
2611 if (ckWARN(WARN_CLOSED))
2612 report_evil_fh(gv, io, optype);
2613 SETERRNO(EBADF,SS_IVCHAN);
2618 DIE(aTHX_ PL_no_sock_func, "setsockopt");
2625 return pp_getpeername();
2627 DIE(aTHX_ PL_no_sock_func, "getsockname");
2635 int optype = PL_op->op_type;
2639 register IO *io = GvIOn(gv);
2642 if (!io || !IoIFP(io))
2645 sv = sv_2mortal(NEWSV(22, 257));
2646 (void)SvPOK_only(sv);
2650 fd = PerlIO_fileno(IoIFP(io));
2652 case OP_GETSOCKNAME:
2653 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2656 case OP_GETPEERNAME:
2657 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2659 #if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2661 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";
2662 /* If the call succeeded, make sure we don't have a zeroed port/addr */
2663 if (((struct sockaddr *)SvPVX(sv))->sa_family == AF_INET &&
2664 !memcmp((char *)SvPVX(sv) + sizeof(u_short), nowhere,
2665 sizeof(u_short) + sizeof(struct in_addr))) {
2672 #ifdef BOGUS_GETNAME_RETURN
2673 /* Interactive Unix, getpeername() and getsockname()
2674 does not return valid namelen */
2675 if (len == BOGUS_GETNAME_RETURN)
2676 len = sizeof(struct sockaddr);
2684 if (ckWARN(WARN_CLOSED))
2685 report_evil_fh(gv, io, optype);
2686 SETERRNO(EBADF,SS_IVCHAN);
2691 DIE(aTHX_ PL_no_sock_func, "getpeername");
2710 if (PL_op->op_flags & OPf_REF) {
2712 if (PL_op->op_type == OP_LSTAT) {
2713 if (gv != PL_defgv) {
2714 if (ckWARN(WARN_IO))
2715 Perl_warner(aTHX_ packWARN(WARN_IO),
2716 "lstat() on filehandle %s", GvENAME(gv));
2717 } else if (PL_laststype != OP_LSTAT)
2718 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
2722 if (gv != PL_defgv) {
2723 PL_laststype = OP_STAT;
2725 sv_setpv(PL_statname, "");
2726 PL_laststatval = (GvIO(gv) && IoIFP(GvIOp(gv))
2727 ? PerlLIO_fstat(PerlIO_fileno(IoIFP(GvIOn(gv))), &PL_statcache) : -1);
2729 if (PL_laststatval < 0) {
2730 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2731 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
2737 if (SvTYPE(sv) == SVt_PVGV) {
2741 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2743 if (PL_op->op_type == OP_LSTAT && ckWARN(WARN_IO))
2744 Perl_warner(aTHX_ packWARN(WARN_IO),
2745 "lstat() on filehandle %s", GvENAME(gv));
2748 sv_setpv(PL_statname, SvPV(sv,n_a));
2751 PL_laststype = PL_op->op_type;
2752 if (PL_op->op_type == OP_LSTAT)
2753 PL_laststatval = PerlLIO_lstat(SvPV(PL_statname, n_a), &PL_statcache);
2756 PL_laststatval = PerlLIO_stat(SvPV(PL_statname, n_a), &PL_statcache);
2757 if (PL_laststatval < 0) {
2758 if (ckWARN(WARN_NEWLINE) && strchr(SvPV(PL_statname, n_a), '\n'))
2759 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
2765 if (gimme != G_ARRAY) {
2766 if (gimme != G_VOID)
2767 XPUSHs(boolSV(max));
2773 PUSHs(sv_2mortal(newSViv(PL_statcache.st_dev)));
2774 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ino)));
2775 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_mode)));
2776 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_nlink)));
2777 #if Uid_t_size > IVSIZE
2778 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_uid)));
2780 # if Uid_t_sign <= 0
2781 PUSHs(sv_2mortal(newSViv(PL_statcache.st_uid)));
2783 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_uid)));
2786 #if Gid_t_size > IVSIZE
2787 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_gid)));
2789 # if Gid_t_sign <= 0
2790 PUSHs(sv_2mortal(newSViv(PL_statcache.st_gid)));
2792 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_gid)));
2795 #ifdef USE_STAT_RDEV
2796 PUSHs(sv_2mortal(newSViv(PL_statcache.st_rdev)));
2798 PUSHs(sv_2mortal(newSVpvn("", 0)));
2800 #if Off_t_size > IVSIZE
2801 PUSHs(sv_2mortal(newSVnv((NV)PL_statcache.st_size)));
2803 PUSHs(sv_2mortal(newSViv(PL_statcache.st_size)));
2806 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_atime)));
2807 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_mtime)));
2808 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_ctime)));
2810 PUSHs(sv_2mortal(newSViv(PL_statcache.st_atime)));
2811 PUSHs(sv_2mortal(newSViv(PL_statcache.st_mtime)));
2812 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ctime)));
2814 #ifdef USE_STAT_BLOCKS
2815 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blksize)));
2816 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blocks)));
2818 PUSHs(sv_2mortal(newSVpvn("", 0)));
2819 PUSHs(sv_2mortal(newSVpvn("", 0)));
2829 #if defined(HAS_ACCESS) && defined(R_OK)
2831 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2832 result = access(TOPpx, R_OK);
2847 if (cando(S_IRUSR, 0, &PL_statcache))
2856 #if defined(HAS_ACCESS) && defined(W_OK)
2858 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2859 result = access(TOPpx, W_OK);
2874 if (cando(S_IWUSR, 0, &PL_statcache))
2883 #if defined(HAS_ACCESS) && defined(X_OK)
2885 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2886 result = access(TOPpx, X_OK);
2901 if (cando(S_IXUSR, 0, &PL_statcache))
2910 #ifdef PERL_EFF_ACCESS_R_OK
2912 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2913 result = PERL_EFF_ACCESS_R_OK(TOPpx);
2928 if (cando(S_IRUSR, 1, &PL_statcache))
2937 #ifdef PERL_EFF_ACCESS_W_OK
2939 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2940 result = PERL_EFF_ACCESS_W_OK(TOPpx);
2955 if (cando(S_IWUSR, 1, &PL_statcache))
2964 #ifdef PERL_EFF_ACCESS_X_OK
2966 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2967 result = PERL_EFF_ACCESS_X_OK(TOPpx);
2982 if (cando(S_IXUSR, 1, &PL_statcache))
2989 I32 result = my_stat();
2998 return pp_ftrowned();
3003 I32 result = my_stat();
3007 if (PL_statcache.st_uid == (PL_op->op_type == OP_FTEOWNED ?
3015 I32 result = my_stat();
3019 if (PL_statcache.st_size == 0)
3026 I32 result = my_stat();
3030 #if Off_t_size > IVSIZE
3031 PUSHn(PL_statcache.st_size);
3033 PUSHi(PL_statcache.st_size);
3040 I32 result = my_stat();
3044 PUSHn( (PL_basetime - PL_statcache.st_mtime) / 86400.0 );
3050 I32 result = my_stat();
3054 PUSHn( (PL_basetime - PL_statcache.st_atime) / 86400.0 );
3060 I32 result = my_stat();
3064 PUSHn( (PL_basetime - PL_statcache.st_ctime) / 86400.0 );
3070 I32 result = my_stat();
3074 if (S_ISSOCK(PL_statcache.st_mode))
3081 I32 result = my_stat();
3085 if (S_ISCHR(PL_statcache.st_mode))
3092 I32 result = my_stat();
3096 if (S_ISBLK(PL_statcache.st_mode))
3103 I32 result = my_stat();
3107 if (S_ISREG(PL_statcache.st_mode))
3114 I32 result = my_stat();
3118 if (S_ISDIR(PL_statcache.st_mode))
3125 I32 result = my_stat();
3129 if (S_ISFIFO(PL_statcache.st_mode))
3136 I32 result = my_lstat();
3140 if (S_ISLNK(PL_statcache.st_mode))
3149 I32 result = my_stat();
3153 if (PL_statcache.st_mode & S_ISUID)
3163 I32 result = my_stat();
3167 if (PL_statcache.st_mode & S_ISGID)
3177 I32 result = my_stat();
3181 if (PL_statcache.st_mode & S_ISVTX)
3192 char *tmps = Nullch;
3195 if (PL_op->op_flags & OPf_REF)
3197 else if (isGV(TOPs))
3199 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3200 gv = (GV*)SvRV(POPs);
3202 gv = gv_fetchpv(tmps = POPpx, FALSE, SVt_PVIO);
3204 if (GvIO(gv) && IoIFP(GvIOp(gv)))
3205 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
3206 else if (tmps && isDIGIT(*tmps))
3210 if (PerlLIO_isatty(fd))
3215 #if defined(atarist) /* this will work with atariST. Configure will
3216 make guesses for other systems. */
3217 # define FILE_base(f) ((f)->_base)
3218 # define FILE_ptr(f) ((f)->_ptr)
3219 # define FILE_cnt(f) ((f)->_cnt)
3220 # define FILE_bufsiz(f) ((f)->_cnt + ((f)->_ptr - (f)->_base))
3230 register STDCHAR *s;
3237 if (PL_op->op_flags & OPf_REF)
3239 else if (isGV(TOPs))
3241 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3242 gv = (GV*)SvRV(POPs);
3248 if (gv == PL_defgv) {
3250 io = GvIO(PL_statgv);
3253 goto really_filename;
3258 PL_laststatval = -1;
3259 sv_setpv(PL_statname, "");
3260 io = GvIO(PL_statgv);
3262 if (io && IoIFP(io)) {
3263 if (! PerlIO_has_base(IoIFP(io)))
3264 DIE(aTHX_ "-T and -B not implemented on filehandles");
3265 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3266 if (PL_laststatval < 0)
3268 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
3269 if (PL_op->op_type == OP_FTTEXT)
3274 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
3275 i = PerlIO_getc(IoIFP(io));
3277 (void)PerlIO_ungetc(IoIFP(io),i);
3279 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
3281 len = PerlIO_get_bufsiz(IoIFP(io));
3282 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
3283 /* sfio can have large buffers - limit to 512 */
3288 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
3290 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
3292 SETERRNO(EBADF,RMS_IFI);
3300 PL_laststatval = -1;
3301 PL_laststype = OP_STAT;
3302 sv_setpv(PL_statname, SvPV(sv, n_a));
3303 if (!(fp = PerlIO_open(SvPVX(PL_statname), "r"))) {
3304 if (ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
3305 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
3308 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(fp), &PL_statcache);
3309 if (PL_laststatval < 0) {
3310 (void)PerlIO_close(fp);
3313 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, Nullch);
3314 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3315 (void)PerlIO_close(fp);
3317 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
3318 RETPUSHNO; /* special case NFS directories */
3319 RETPUSHYES; /* null file is anything */
3324 /* now scan s to look for textiness */
3325 /* XXX ASCII dependent code */
3327 #if defined(DOSISH) || defined(USEMYBINMODE)
3328 /* ignore trailing ^Z on short files */
3329 if (len && len < sizeof(tbuf) && tbuf[len-1] == 26)
3333 for (i = 0; i < len; i++, s++) {
3334 if (!*s) { /* null never allowed in text */
3339 else if (!(isPRINT(*s) || isSPACE(*s)))
3342 else if (*s & 128) {
3344 if (IN_LOCALE_RUNTIME && isALPHA_LC(*s))
3347 /* utf8 characters don't count as odd */
3348 if (UTF8_IS_START(*s)) {
3349 int ulen = UTF8SKIP(s);
3350 if (ulen < len - i) {
3352 for (j = 1; j < ulen; j++) {
3353 if (!UTF8_IS_CONTINUATION(s[j]))
3356 --ulen; /* loop does extra increment */
3366 *s != '\n' && *s != '\r' && *s != '\b' &&
3367 *s != '\t' && *s != '\f' && *s != 27)
3372 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
3397 if( !tmps || !*tmps ) {
3398 if ( (svp = hv_fetch(GvHVn(PL_envgv), "HOME", 4, FALSE))
3399 || (svp = hv_fetch(GvHVn(PL_envgv), "LOGDIR", 6, FALSE))
3401 || (svp = hv_fetch(GvHVn(PL_envgv), "SYS$LOGIN", 9, FALSE))
3406 deprecate("chdir('') or chdir(undef) as chdir()");
3407 tmps = SvPV(*svp, n_a);
3411 TAINT_PROPER("chdir");
3416 TAINT_PROPER("chdir");
3417 PUSHi( PerlDir_chdir(tmps) >= 0 );
3419 /* Clear the DEFAULT element of ENV so we'll get the new value
3421 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
3429 dSP; dMARK; dTARGET;
3430 I32 value = (I32)apply(PL_op->op_type, MARK, SP);
3436 DIE(aTHX_ PL_no_func, "chown");
3446 TAINT_PROPER("chroot");
3447 PUSHi( chroot(tmps) >= 0 );
3450 DIE(aTHX_ PL_no_func, "chroot");
3456 dSP; dMARK; dTARGET;
3458 value = (I32)apply(PL_op->op_type, MARK, SP);
3466 dSP; dMARK; dTARGET;
3468 value = (I32)apply(PL_op->op_type, MARK, SP);
3476 dSP; dMARK; dTARGET;
3478 value = (I32)apply(PL_op->op_type, MARK, SP);
3490 char *tmps2 = POPpx;
3491 char *tmps = SvPV(TOPs, n_a);
3492 TAINT_PROPER("rename");
3494 anum = PerlLIO_rename(tmps, tmps2);
3496 if (!(anum = PerlLIO_stat(tmps, &PL_statbuf))) {
3497 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3500 if (PL_euid || PerlLIO_stat(tmps2, &PL_statbuf) < 0 || !S_ISDIR(PL_statbuf.st_mode))
3501 (void)UNLINK(tmps2);
3502 if (!(anum = link(tmps, tmps2)))
3503 anum = UNLINK(tmps);
3516 char *tmps2 = POPpx;
3517 char *tmps = SvPV(TOPs, n_a);
3518 TAINT_PROPER("link");
3519 SETi( PerlLIO_link(tmps, tmps2) >= 0 );
3522 DIE(aTHX_ PL_no_func, "link");
3531 char *tmps2 = POPpx;
3532 char *tmps = SvPV(TOPs, n_a);
3533 TAINT_PROPER("symlink");
3534 SETi( symlink(tmps, tmps2) >= 0 );
3537 DIE(aTHX_ PL_no_func, "symlink");
3547 char buf[MAXPATHLEN];
3551 #ifndef INCOMPLETE_TAINTS
3555 len = readlink(tmps, buf, sizeof(buf) - 1);
3563 RETSETUNDEF; /* just pretend it's a normal file */
3567 #if !defined(HAS_MKDIR) || !defined(HAS_RMDIR)
3569 S_dooneliner(pTHX_ char *cmd, char *filename)
3571 char *save_filename = filename;
3577 New(666, cmdline, strlen(cmd) + (strlen(filename) * 2) + 10, char);
3578 strcpy(cmdline, cmd);
3579 strcat(cmdline, " ");
3580 for (s = cmdline + strlen(cmdline); *filename; ) {
3585 myfp = PerlProc_popen(cmdline, "r");
3589 SV *tmpsv = sv_newmortal();
3590 /* Need to save/restore 'PL_rs' ?? */
3591 s = sv_gets(tmpsv, myfp, 0);
3592 (void)PerlProc_pclose(myfp);
3596 #ifdef HAS_SYS_ERRLIST
3601 /* you don't see this */
3603 #ifdef HAS_SYS_ERRLIST
3611 if (instr(s, errmsg)) {
3618 #define EACCES EPERM
3620 if (instr(s, "cannot make"))
3621 SETERRNO(EEXIST,RMS_FEX);
3622 else if (instr(s, "existing file"))
3623 SETERRNO(EEXIST,RMS_FEX);
3624 else if (instr(s, "ile exists"))
3625 SETERRNO(EEXIST,RMS_FEX);
3626 else if (instr(s, "non-exist"))
3627 SETERRNO(ENOENT,RMS_FNF);
3628 else if (instr(s, "does not exist"))
3629 SETERRNO(ENOENT,RMS_FNF);
3630 else if (instr(s, "not empty"))
3631 SETERRNO(EBUSY,SS_DEVOFFLINE);
3632 else if (instr(s, "cannot access"))
3633 SETERRNO(EACCES,RMS_PRV);
3635 SETERRNO(EPERM,RMS_PRV);
3638 else { /* some mkdirs return no failure indication */
3639 anum = (PerlLIO_stat(save_filename, &PL_statbuf) >= 0);
3640 if (PL_op->op_type == OP_RMDIR)
3645 SETERRNO(EACCES,RMS_PRV); /* a guess */
3670 tmps = SvPV(TOPs, len);
3671 /* Different operating and file systems take differently to
3672 * trailing slashes. According to POSIX 1003.1 1996 Edition
3673 * any number of trailing slashes should be allowed.
3674 * Thusly we snip them away so that even non-conforming
3675 * systems are happy. */
3676 /* We should probably do this "filtering" for all
3677 * the functions that expect (potentially) directory names:
3678 * -d, chdir(), chmod(), chown(), chroot(), fcntl()?,
3679 * (mkdir()), opendir(), rename(), rmdir(), stat(). --jhi */
3680 if (len > 1 && tmps[len-1] == '/') {
3681 while (tmps[len-1] == '/' && len > 1)
3683 tmps = savepvn(tmps, len);
3687 TAINT_PROPER("mkdir");
3689 SETi( PerlDir_mkdir(tmps, mode) >= 0 );
3691 SETi( dooneliner("mkdir", tmps) );
3692 oldumask = PerlLIO_umask(0);
3693 PerlLIO_umask(oldumask);
3694 PerlLIO_chmod(tmps, (mode & ~oldumask) & 0777);
3708 TAINT_PROPER("rmdir");
3710 XPUSHi( PerlDir_rmdir(tmps) >= 0 );
3712 XPUSHi( dooneliner("rmdir", tmps) );
3717 /* Directory calls. */
3721 #if defined(Direntry_t) && defined(HAS_READDIR)
3724 char *dirname = POPpx;
3726 register IO *io = GvIOn(gv);
3732 PerlDir_close(IoDIRP(io));
3733 if (!(IoDIRP(io) = PerlDir_open(dirname)))
3739 SETERRNO(EBADF,RMS_DIR);
3742 DIE(aTHX_ PL_no_dir_func, "opendir");
3748 #if defined(Direntry_t) && defined(HAS_READDIR)
3750 #if !defined(I_DIRENT) && !defined(VMS)
3751 Direntry_t *readdir (DIR *);
3753 register Direntry_t *dp;
3755 register IO *io = GvIOn(gv);
3758 if (!io || !IoDIRP(io))
3761 if (GIMME == G_ARRAY) {
3763 while ((dp = (Direntry_t *)PerlDir_read(IoDIRP(io)))) {
3765 sv = newSVpvn(dp->d_name, dp->d_namlen);
3767 sv = newSVpv(dp->d_name, 0);
3769 #ifndef INCOMPLETE_TAINTS
3770 if (!(IoFLAGS(io) & IOf_UNTAINT))
3773 XPUSHs(sv_2mortal(sv));
3777 if (!(dp = (Direntry_t *)PerlDir_read(IoDIRP(io))))
3780 sv = newSVpvn(dp->d_name, dp->d_namlen);
3782 sv = newSVpv(dp->d_name, 0);
3784 #ifndef INCOMPLETE_TAINTS
3785 if (!(IoFLAGS(io) & IOf_UNTAINT))
3788 XPUSHs(sv_2mortal(sv));
3794 SETERRNO(EBADF,RMS_ISI);
3795 if (GIMME == G_ARRAY)
3800 DIE(aTHX_ PL_no_dir_func, "readdir");
3806 #if defined(HAS_TELLDIR) || defined(telldir)
3808 /* XXX does _anyone_ need this? --AD 2/20/1998 */
3809 /* XXX netbsd still seemed to.
3810 XXX HAS_TELLDIR_PROTO is new style, NEED_TELLDIR_PROTO is old style.
3811 --JHI 1999-Feb-02 */
3812 # if !defined(HAS_TELLDIR_PROTO) || defined(NEED_TELLDIR_PROTO)
3813 long telldir (DIR *);
3816 register IO *io = GvIOn(gv);
3818 if (!io || !IoDIRP(io))
3821 PUSHi( PerlDir_tell(IoDIRP(io)) );
3825 SETERRNO(EBADF,RMS_ISI);
3828 DIE(aTHX_ PL_no_dir_func, "telldir");
3834 #if defined(HAS_SEEKDIR) || defined(seekdir)
3838 register IO *io = GvIOn(gv);
3840 if (!io || !IoDIRP(io))
3843 (void)PerlDir_seek(IoDIRP(io), along);
3848 SETERRNO(EBADF,RMS_ISI);
3851 DIE(aTHX_ PL_no_dir_func, "seekdir");
3857 #if defined(HAS_REWINDDIR) || defined(rewinddir)
3860 register IO *io = GvIOn(gv);
3862 if (!io || !IoDIRP(io))
3865 (void)PerlDir_rewind(IoDIRP(io));
3869 SETERRNO(EBADF,RMS_ISI);
3872 DIE(aTHX_ PL_no_dir_func, "rewinddir");
3878 #if defined(Direntry_t) && defined(HAS_READDIR)
3881 register IO *io = GvIOn(gv);
3883 if (!io || !IoDIRP(io))
3886 #ifdef VOID_CLOSEDIR
3887 PerlDir_close(IoDIRP(io));
3889 if (PerlDir_close(IoDIRP(io)) < 0) {
3890 IoDIRP(io) = 0; /* Don't try to close again--coredumps on SysV */
3899 SETERRNO(EBADF,RMS_IFI);
3902 DIE(aTHX_ PL_no_dir_func, "closedir");
3906 /* Process control. */
3916 PERL_FLUSHALL_FOR_CHILD;
3917 childpid = PerlProc_fork();
3922 if ((tmpgv = gv_fetchpv("$", TRUE, SVt_PV))) {
3923 SvREADONLY_off(GvSV(tmpgv));
3924 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3925 SvREADONLY_on(GvSV(tmpgv));
3927 #ifdef THREADS_HAVE_PIDS
3928 PL_ppid = (IV)getppid();
3930 hv_clear(PL_pidstatus); /* no kids, so don't wait for 'em */
3935 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
3940 PERL_FLUSHALL_FOR_CHILD;
3941 childpid = PerlProc_fork();
3947 DIE(aTHX_ PL_no_func, "fork");
3954 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
3959 #ifdef PERL_OLD_SIGNALS
3960 childpid = wait4pid(-1, &argflags, 0);
3962 while ((childpid = wait4pid(-1, &argflags, 0)) == -1 && errno == EINTR) {
3966 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
3967 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
3968 STATUS_NATIVE_SET((childpid && childpid != -1) ? argflags : -1);
3970 STATUS_NATIVE_SET((childpid > 0) ? argflags : -1);
3975 DIE(aTHX_ PL_no_func, "wait");
3981 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
3989 #ifdef PERL_OLD_SIGNALS
3990 childpid = wait4pid(childpid, &argflags, optype);
3992 while ((childpid = wait4pid(childpid, &argflags, optype)) == -1 && errno == EINTR) {
3996 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
3997 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
3998 STATUS_NATIVE_SET((childpid && childpid != -1) ? argflags : -1);
4000 STATUS_NATIVE_SET((childpid > 0) ? argflags : -1);
4005 DIE(aTHX_ PL_no_func, "waitpid");
4011 dSP; dMARK; dORIGMARK; dTARGET;
4019 while (++MARK <= SP) {
4020 (void)SvPV_nolen(*MARK); /* stringify for taint check */
4025 TAINT_PROPER("system");
4027 PERL_FLUSHALL_FOR_CHILD;
4028 #if (defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(OS2) || defined(PERL_MICRO)
4033 if (PerlProc_pipe(pp) >= 0)
4035 while ((childpid = PerlProc_fork()) == -1) {
4036 if (errno != EAGAIN) {
4041 PerlLIO_close(pp[0]);
4042 PerlLIO_close(pp[1]);
4049 Sigsave_t ihand,qhand; /* place to save signals during system() */
4053 PerlLIO_close(pp[1]);
4055 rsignal_save(SIGINT, SIG_IGN, &ihand);
4056 rsignal_save(SIGQUIT, SIG_IGN, &qhand);
4059 result = wait4pid(childpid, &status, 0);
4060 } while (result == -1 && errno == EINTR);
4062 (void)rsignal_restore(SIGINT, &ihand);
4063 (void)rsignal_restore(SIGQUIT, &qhand);
4065 STATUS_NATIVE_SET(result == -1 ? -1 : status);
4066 do_execfree(); /* free any memory child malloced on fork */
4072 while (n < sizeof(int)) {
4073 n1 = PerlLIO_read(pp[0],
4074 (void*)(((char*)&errkid)+n),
4080 PerlLIO_close(pp[0]);
4081 if (n) { /* Error */
4082 if (n != sizeof(int))
4083 DIE(aTHX_ "panic: kid popen errno read");
4084 errno = errkid; /* Propagate errno from kid */
4085 STATUS_CURRENT = -1;
4088 PUSHi(STATUS_CURRENT);
4092 PerlLIO_close(pp[0]);
4093 #if defined(HAS_FCNTL) && defined(F_SETFD)
4094 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
4097 if (PL_op->op_flags & OPf_STACKED) {
4098 SV *really = *++MARK;
4099 value = (I32)do_aexec5(really, MARK, SP, pp[1], did_pipes);
4101 else if (SP - MARK != 1)
4102 value = (I32)do_aexec5(Nullsv, MARK, SP, pp[1], did_pipes);
4104 value = (I32)do_exec3(SvPVx(sv_mortalcopy(*SP), n_a), pp[1], did_pipes);
4108 #else /* ! FORK or VMS or OS/2 */
4111 if (PL_op->op_flags & OPf_STACKED) {
4112 SV *really = *++MARK;
4114 value = (I32)do_aspawn(really, MARK, SP);
4116 value = (I32)do_aspawn(really, (void **)MARK, (void **)SP);
4119 else if (SP - MARK != 1) {
4121 value = (I32)do_aspawn(Nullsv, MARK, SP);
4123 value = (I32)do_aspawn(Nullsv, (void **)MARK, (void **)SP);
4127 value = (I32)do_spawn(SvPVx(sv_mortalcopy(*SP), n_a));
4129 if (PL_statusvalue == -1) /* hint that value must be returned as is */
4131 STATUS_NATIVE_SET(value);
4134 PUSHi(result ? value : STATUS_CURRENT);
4135 #endif /* !FORK or VMS */
4141 dSP; dMARK; dORIGMARK; dTARGET;
4147 while (++MARK <= SP) {
4148 (void)SvPV_nolen(*MARK); /* stringify for taint check */
4153 TAINT_PROPER("exec");
4155 PERL_FLUSHALL_FOR_CHILD;
4156 if (PL_op->op_flags & OPf_STACKED) {
4157 SV *really = *++MARK;
4158 value = (I32)do_aexec(really, MARK, SP);
4160 else if (SP - MARK != 1)
4162 value = (I32)vms_do_aexec(Nullsv, MARK, SP);
4166 (void ) do_aspawn(Nullsv, MARK, SP);
4170 value = (I32)do_aexec(Nullsv, MARK, SP);
4175 value = (I32)vms_do_exec(SvPVx(sv_mortalcopy(*SP), n_a));
4178 (void) do_spawn(SvPVx(sv_mortalcopy(*SP), n_a));
4181 value = (I32)do_exec(SvPVx(sv_mortalcopy(*SP), n_a));
4194 dSP; dMARK; dTARGET;
4196 value = (I32)apply(PL_op->op_type, MARK, SP);
4201 DIE(aTHX_ PL_no_func, "kill");
4209 # ifdef THREADS_HAVE_PIDS
4212 XPUSHi( getppid() );
4216 DIE(aTHX_ PL_no_func, "getppid");
4232 pgrp = (I32)BSD_GETPGRP(pid);
4234 if (pid != 0 && pid != PerlProc_getpid())
4235 DIE(aTHX_ "POSIX getpgrp can't take an argument");
4241 DIE(aTHX_ PL_no_func, "getpgrp()");
4260 TAINT_PROPER("setpgrp");
4262 SETi( BSD_SETPGRP(pid, pgrp) >= 0 );
4264 if ((pgrp != 0 && pgrp != PerlProc_getpid())
4265 || (pid != 0 && pid != PerlProc_getpid()))
4267 DIE(aTHX_ "setpgrp can't take arguments");
4269 SETi( setpgrp() >= 0 );
4270 #endif /* USE_BSDPGRP */
4273 DIE(aTHX_ PL_no_func, "setpgrp()");
4279 #ifdef HAS_GETPRIORITY
4283 SETi( getpriority(which, who) );
4286 DIE(aTHX_ PL_no_func, "getpriority()");
4292 #ifdef HAS_SETPRIORITY
4297 TAINT_PROPER("setpriority");
4298 SETi( setpriority(which, who, niceval) >= 0 );
4301 DIE(aTHX_ PL_no_func, "setpriority()");
4311 XPUSHn( time(Null(Time_t*)) );
4313 XPUSHi( time(Null(Time_t*)) );
4324 (void)PerlProc_times(&PL_timesbuf);
4326 (void)PerlProc_times((tbuffer_t *)&PL_timesbuf); /* time.h uses different name for */
4327 /* struct tms, though same data */
4331 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_utime)/(NV)PL_clocktick)));
4332 if (GIMME == G_ARRAY) {
4333 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_stime)/(NV)PL_clocktick)));
4334 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_cutime)/(NV)PL_clocktick)));
4335 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_cstime)/(NV)PL_clocktick)));
4339 DIE(aTHX_ "times not implemented");
4340 #endif /* HAS_TIMES */
4353 static char *dayname[] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
4354 static char *monname[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
4355 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
4361 when = (Time_t)SvNVx(POPs);
4363 when = (Time_t)SvIVx(POPs);
4366 if (PL_op->op_type == OP_LOCALTIME)
4367 tmbuf = localtime(&when);
4369 tmbuf = gmtime(&when);
4371 if (GIMME != G_ARRAY) {
4377 tsv = Perl_newSVpvf(aTHX_ "%s %s %2d %02d:%02d:%02d %d",
4378 dayname[tmbuf->tm_wday],
4379 monname[tmbuf->tm_mon],
4384 tmbuf->tm_year + 1900);
4385 PUSHs(sv_2mortal(tsv));
4390 PUSHs(sv_2mortal(newSViv(tmbuf->tm_sec)));
4391 PUSHs(sv_2mortal(newSViv(tmbuf->tm_min)));
4392 PUSHs(sv_2mortal(newSViv(tmbuf->tm_hour)));
4393 PUSHs(sv_2mortal(newSViv(tmbuf->tm_mday)));
4394 PUSHs(sv_2mortal(newSViv(tmbuf->tm_mon)));
4395 PUSHs(sv_2mortal(newSViv(tmbuf->tm_year)));
4396 PUSHs(sv_2mortal(newSViv(tmbuf->tm_wday)));
4397 PUSHs(sv_2mortal(newSViv(tmbuf->tm_yday)));
4398 PUSHs(sv_2mortal(newSViv(tmbuf->tm_isdst)));
4409 anum = alarm((unsigned int)anum);
4416 DIE(aTHX_ PL_no_func, "alarm");
4427 (void)time(&lasttime);
4432 PerlProc_sleep((unsigned int)duration);
4435 XPUSHi(when - lasttime);
4439 /* Shared memory. */
4453 return pp_shmwrite();
4458 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4459 dSP; dMARK; dTARGET;
4460 I32 value = (I32)(do_shmio(PL_op->op_type, MARK, SP) >= 0);
4469 /* Message passing. */
4483 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4484 dSP; dMARK; dTARGET;
4485 I32 value = (I32)(do_msgsnd(MARK, SP) >= 0);
4496 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4497 dSP; dMARK; dTARGET;
4498 I32 value = (I32)(do_msgrcv(MARK, SP) >= 0);
4511 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4512 dSP; dMARK; dTARGET;
4513 int anum = do_ipcget(PL_op->op_type, MARK, SP);
4520 DIE(aTHX_ "System V IPC is not implemented on this machine");
4526 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4527 dSP; dMARK; dTARGET;
4528 int anum = do_ipcctl(PL_op->op_type, MARK, SP);
4536 PUSHp(zero_but_true, ZBTLEN);
4546 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4547 dSP; dMARK; dTARGET;
4548 I32 value = (I32)(do_semop(MARK, SP) >= 0);
4557 /* Get system info. */
4561 #ifdef HAS_GETHOSTBYNAME
4562 return pp_ghostent();
4564 DIE(aTHX_ PL_no_sock_func, "gethostbyname");
4570 #ifdef HAS_GETHOSTBYADDR
4571 return pp_ghostent();
4573 DIE(aTHX_ PL_no_sock_func, "gethostbyaddr");
4579 #if defined(HAS_GETHOSTBYNAME) || defined(HAS_GETHOSTBYADDR) || defined(HAS_GETHOSTENT)
4581 I32 which = PL_op->op_type;
4582 register char **elem;
4584 #ifndef HAS_GETHOST_PROTOS /* XXX Do we need individual probes? */
4585 struct hostent *gethostbyaddr(Netdb_host_t, Netdb_hlen_t, int);
4586 struct hostent *gethostbyname(Netdb_name_t);
4587 struct hostent *gethostent(void);
4589 struct hostent *hent;
4594 if (which == OP_GHBYNAME) {
4595 #ifdef HAS_GETHOSTBYNAME
4596 char* name = POPpbytex;
4597 hent = PerlSock_gethostbyname(name);
4599 DIE(aTHX_ PL_no_sock_func, "gethostbyname");
4602 else if (which == OP_GHBYADDR) {
4603 #ifdef HAS_GETHOSTBYADDR
4604 int addrtype = POPi;
4607 Netdb_host_t addr = (Netdb_host_t) SvPVbyte(addrsv, addrlen);
4609 hent = PerlSock_gethostbyaddr(addr, (Netdb_hlen_t) addrlen, addrtype);
4611 DIE(aTHX_ PL_no_sock_func, "gethostbyaddr");
4615 #ifdef HAS_GETHOSTENT
4616 hent = PerlSock_gethostent();
4618 DIE(aTHX_ PL_no_sock_func, "gethostent");
4621 #ifdef HOST_NOT_FOUND
4623 #ifdef USE_REENTRANT_API
4624 # ifdef USE_GETHOSTENT_ERRNO
4625 h_errno = PL_reentrant_buffer->_gethostent_errno;
4628 STATUS_NATIVE_SET(h_errno);
4632 if (GIMME != G_ARRAY) {
4633 PUSHs(sv = sv_newmortal());
4635 if (which == OP_GHBYNAME) {
4637 sv_setpvn(sv, hent->h_addr, hent->h_length);
4640 sv_setpv(sv, (char*)hent->h_name);
4646 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4647 sv_setpv(sv, (char*)hent->h_name);
4648 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4649 for (elem = hent->h_aliases; elem && *elem; elem++) {
4650 sv_catpv(sv, *elem);
4652 sv_catpvn(sv, " ", 1);
4654 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4655 sv_setiv(sv, (IV)hent->h_addrtype);
4656 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4657 len = hent->h_length;
4658 sv_setiv(sv, (IV)len);
4660 for (elem = hent->h_addr_list; elem && *elem; elem++) {
4661 XPUSHs(sv = sv_mortalcopy(&PL_sv_no));
4662 sv_setpvn(sv, *elem, len);
4665 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4667 sv_setpvn(sv, hent->h_addr, len);
4672 DIE(aTHX_ PL_no_sock_func, "gethostent");
4678 #ifdef HAS_GETNETBYNAME
4679 return pp_gnetent();
4681 DIE(aTHX_ PL_no_sock_func, "getnetbyname");
4687 #ifdef HAS_GETNETBYADDR
4688 return pp_gnetent();
4690 DIE(aTHX_ PL_no_sock_func, "getnetbyaddr");
4696 #if defined(HAS_GETNETBYNAME) || defined(HAS_GETNETBYADDR) || defined(HAS_GETNETENT)
4698 I32 which = PL_op->op_type;
4699 register char **elem;
4701 #ifndef HAS_GETNET_PROTOS /* XXX Do we need individual probes? */
4702 struct netent *getnetbyaddr(Netdb_net_t, int);
4703 struct netent *getnetbyname(Netdb_name_t);
4704 struct netent *getnetent(void);
4706 struct netent *nent;
4709 if (which == OP_GNBYNAME){
4710 #ifdef HAS_GETNETBYNAME
4711 char *name = POPpbytex;
4712 nent = PerlSock_getnetbyname(name);
4714 DIE(aTHX_ PL_no_sock_func, "getnetbyname");
4717 else if (which == OP_GNBYADDR) {
4718 #ifdef HAS_GETNETBYADDR
4719 int addrtype = POPi;
4720 Netdb_net_t addr = (Netdb_net_t) (U32)POPu;
4721 nent = PerlSock_getnetbyaddr(addr, addrtype);
4723 DIE(aTHX_ PL_no_sock_func, "getnetbyaddr");
4727 #ifdef HAS_GETNETENT
4728 nent = PerlSock_getnetent();
4730 DIE(aTHX_ PL_no_sock_func, "getnetent");
4733 #ifdef HOST_NOT_FOUND
4735 #ifdef USE_REENTRANT_API
4736 # ifdef USE_GETNETENT_ERRNO
4737 h_errno = PL_reentrant_buffer->_getnetent_errno;
4740 STATUS_NATIVE_SET(h_errno);
4745 if (GIMME != G_ARRAY) {
4746 PUSHs(sv = sv_newmortal());
4748 if (which == OP_GNBYNAME)
4749 sv_setiv(sv, (IV)nent->n_net);
4751 sv_setpv(sv, nent->n_name);
4757 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4758 sv_setpv(sv, nent->n_name);
4759 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4760 for (elem = nent->n_aliases; elem && *elem; elem++) {
4761 sv_catpv(sv, *elem);
4763 sv_catpvn(sv, " ", 1);
4765 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4766 sv_setiv(sv, (IV)nent->n_addrtype);
4767 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4768 sv_setiv(sv, (IV)nent->n_net);
4773 DIE(aTHX_ PL_no_sock_func, "getnetent");
4779 #ifdef HAS_GETPROTOBYNAME
4780 return pp_gprotoent();
4782 DIE(aTHX_ PL_no_sock_func, "getprotobyname");
4788 #ifdef HAS_GETPROTOBYNUMBER
4789 return pp_gprotoent();
4791 DIE(aTHX_ PL_no_sock_func, "getprotobynumber");
4797 #if defined(HAS_GETPROTOBYNAME) || defined(HAS_GETPROTOBYNUMBER) || defined(HAS_GETPROTOENT)
4799 I32 which = PL_op->op_type;
4800 register char **elem;
4802 #ifndef HAS_GETPROTO_PROTOS /* XXX Do we need individual probes? */
4803 struct protoent *getprotobyname(Netdb_name_t);
4804 struct protoent *getprotobynumber(int);
4805 struct protoent *getprotoent(void);
4807 struct protoent *pent;
4810 if (which == OP_GPBYNAME) {
4811 #ifdef HAS_GETPROTOBYNAME
4812 char* name = POPpbytex;
4813 pent = PerlSock_getprotobyname(name);
4815 DIE(aTHX_ PL_no_sock_func, "getprotobyname");
4818 else if (which == OP_GPBYNUMBER) {
4819 #ifdef HAS_GETPROTOBYNUMBER
4821 pent = PerlSock_getprotobynumber(number);
4823 DIE(aTHX_ PL_no_sock_func, "getprotobynumber");
4827 #ifdef HAS_GETPROTOENT
4828 pent = PerlSock_getprotoent();
4830 DIE(aTHX_ PL_no_sock_func, "getprotoent");
4834 if (GIMME != G_ARRAY) {
4835 PUSHs(sv = sv_newmortal());
4837 if (which == OP_GPBYNAME)
4838 sv_setiv(sv, (IV)pent->p_proto);
4840 sv_setpv(sv, pent->p_name);
4846 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4847 sv_setpv(sv, pent->p_name);
4848 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4849 for (elem = pent->p_aliases; elem && *elem; elem++) {
4850 sv_catpv(sv, *elem);
4852 sv_catpvn(sv, " ", 1);
4854 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4855 sv_setiv(sv, (IV)pent->p_proto);
4860 DIE(aTHX_ PL_no_sock_func, "getprotoent");
4866 #ifdef HAS_GETSERVBYNAME
4867 return pp_gservent();
4869 DIE(aTHX_ PL_no_sock_func, "getservbyname");
4875 #ifdef HAS_GETSERVBYPORT
4876 return pp_gservent();
4878 DIE(aTHX_ PL_no_sock_func, "getservbyport");
4884 #if defined(HAS_GETSERVBYNAME) || defined(HAS_GETSERVBYPORT) || defined(HAS_GETSERVENT)
4886 I32 which = PL_op->op_type;
4887 register char **elem;
4889 #ifndef HAS_GETSERV_PROTOS /* XXX Do we need individual probes? */
4890 struct servent *getservbyname(Netdb_name_t, Netdb_name_t);
4891 struct servent *getservbyport(int, Netdb_name_t);
4892 struct servent *getservent(void);
4894 struct servent *sent;
4897 if (which == OP_GSBYNAME) {
4898 #ifdef HAS_GETSERVBYNAME
4899 char *proto = POPpbytex;
4900 char *name = POPpbytex;
4902 if (proto && !*proto)
4905 sent = PerlSock_getservbyname(name, proto);
4907 DIE(aTHX_ PL_no_sock_func, "getservbyname");
4910 else if (which == OP_GSBYPORT) {
4911 #ifdef HAS_GETSERVBYPORT
4912 char *proto = POPpbytex;
4913 unsigned short port = (unsigned short)POPu;
4915 if (proto && !*proto)
4919 port = PerlSock_htons(port);
4921 sent = PerlSock_getservbyport(port, proto);
4923 DIE(aTHX_ PL_no_sock_func, "getservbyport");
4927 #ifdef HAS_GETSERVENT
4928 sent = PerlSock_getservent();
4930 DIE(aTHX_ PL_no_sock_func, "getservent");
4934 if (GIMME != G_ARRAY) {
4935 PUSHs(sv = sv_newmortal());
4937 if (which == OP_GSBYNAME) {
4939 sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
4941 sv_setiv(sv, (IV)(sent->s_port));
4945 sv_setpv(sv, sent->s_name);
4951 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4952 sv_setpv(sv, sent->s_name);
4953 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4954 for (elem = sent->s_aliases; elem && *elem; elem++) {
4955 sv_catpv(sv, *elem);
4957 sv_catpvn(sv, " ", 1);
4959 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4961 sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
4963 sv_setiv(sv, (IV)(sent->s_port));
4965 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4966 sv_setpv(sv, sent->s_proto);
4971 DIE(aTHX_ PL_no_sock_func, "getservent");
4977 #ifdef HAS_SETHOSTENT
4979 PerlSock_sethostent(TOPi);
4982 DIE(aTHX_ PL_no_sock_func, "sethostent");
4988 #ifdef HAS_SETNETENT
4990 PerlSock_setnetent(TOPi);
4993 DIE(aTHX_ PL_no_sock_func, "setnetent");
4999 #ifdef HAS_SETPROTOENT
5001 PerlSock_setprotoent(TOPi);
5004 DIE(aTHX_ PL_no_sock_func, "setprotoent");
5010 #ifdef HAS_SETSERVENT
5012 PerlSock_setservent(TOPi);
5015 DIE(aTHX_ PL_no_sock_func, "setservent");
5021 #ifdef HAS_ENDHOSTENT
5023 PerlSock_endhostent();
5027 DIE(aTHX_ PL_no_sock_func, "endhostent");
5033 #ifdef HAS_ENDNETENT
5035 PerlSock_endnetent();
5039 DIE(aTHX_ PL_no_sock_func, "endnetent");
5045 #ifdef HAS_ENDPROTOENT
5047 PerlSock_endprotoent();
5051 DIE(aTHX_ PL_no_sock_func, "endprotoent");
5057 #ifdef HAS_ENDSERVENT
5059 PerlSock_endservent();
5063 DIE(aTHX_ PL_no_sock_func, "endservent");
5072 DIE(aTHX_ PL_no_func, "getpwnam");
5081 DIE(aTHX_ PL_no_func, "getpwuid");
5089 I32 which = PL_op->op_type;
5092 struct passwd *pwent = NULL;
5094 * We currently support only the SysV getsp* shadow password interface.
5095 * The interface is declared in <shadow.h> and often one needs to link
5096 * with -lsecurity or some such.
5097 * This interface is used at least by Solaris, HP-UX, IRIX, and Linux.
5100 * AIX getpwnam() is clever enough to return the encrypted password
5101 * only if the caller (euid?) is root.
5103 * There are at least two other shadow password APIs. Many platforms
5104 * seem to contain more than one interface for accessing the shadow
5105 * password databases, possibly for compatibility reasons.
5106 * The getsp*() is by far he simplest one, the other two interfaces
5107 * are much more complicated, but also very similar to each other.
5112 * struct pr_passwd *getprpw*();
5113 * The password is in
5114 * char getprpw*(...).ufld.fd_encrypt[]
5115 * Mention HAS_GETPRPWNAM here so that Configure probes for it.
5120 * struct es_passwd *getespw*();
5121 * The password is in
5122 * char *(getespw*(...).ufld.fd_encrypt)
5123 * Mention HAS_GETESPWNAM here so that Configure probes for it.
5125 * Mention I_PROT here so that Configure probes for it.
5127 * In HP-UX for getprpw*() the manual page claims that one should include
5128 * <hpsecurity.h> instead of <sys/security.h>, but that is not needed
5129 * if one includes <shadow.h> as that includes <hpsecurity.h>,
5130 * and pp_sys.c already includes <shadow.h> if there is such.
5132 * Note that <sys/security.h> is already probed for, but currently
5133 * it is only included in special cases.
5135 * In Digital UNIX/Tru64 if using the getespw*() (which seems to be
5136 * be preferred interface, even though also the getprpw*() interface
5137 * is available) one needs to link with -lsecurity -ldb -laud -lm.
5138 * One also needs to call set_auth_parameters() in main() before
5139 * doing anything else, whether one is using getespw*() or getprpw*().
5141 * Note that accessing the shadow databases can be magnitudes
5142 * slower than accessing the standard databases.
5150 char* name = POPpbytex;
5151 pwent = getpwnam(name);
5157 pwent = getpwuid(uid);
5161 # ifdef HAS_GETPWENT
5163 #ifdef POSIX_BC /* In some cases pw_passwd has invalid addresses */
5164 if (pwent) pwent = getpwnam(pwent->pw_name);
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 char* name = POPpbytex;
5360 grent = (struct group *)getgrnam(name);
5362 else if (which == OP_GGRGID) {
5364 grent = (struct group *)getgrgid(gid);
5368 grent = (struct group *)getgrent();
5370 DIE(aTHX_ PL_no_func, "getgrent");
5374 if (GIMME != G_ARRAY) {
5375 PUSHs(sv = sv_newmortal());
5377 if (which == OP_GGRNAM)
5378 sv_setiv(sv, (IV)grent->gr_gid);
5380 sv_setpv(sv, grent->gr_name);
5386 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5387 sv_setpv(sv, grent->gr_name);
5389 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5391 sv_setpv(sv, grent->gr_passwd);
5394 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5395 sv_setiv(sv, (IV)grent->gr_gid);
5397 #if !(defined(_CRAYMPP) && defined(USE_REENTRANT_API))
5398 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5399 /* In UNICOS/mk (_CRAYMPP) the multithreading
5400 * versions (getgrnam_r, getgrgid_r)
5401 * seem to return an illegal pointer
5402 * as the group members list, gr_mem.
5403 * getgrent() doesn't even have a _r version
5404 * but the gr_mem is poisonous anyway.
5405 * So yes, you cannot get the list of group
5406 * members if building multithreaded in UNICOS/mk. */
5407 for (elem = grent->gr_mem; elem && *elem; elem++) {
5408 sv_catpv(sv, *elem);
5410 sv_catpvn(sv, " ", 1);
5417 DIE(aTHX_ PL_no_func, "getgrent");
5423 #if defined(HAS_GROUP) && defined(HAS_SETGRENT)
5428 DIE(aTHX_ PL_no_func, "setgrent");
5434 #if defined(HAS_GROUP) && defined(HAS_ENDGRENT)
5439 DIE(aTHX_ PL_no_func, "endgrent");
5449 if (!(tmps = PerlProc_getlogin()))
5451 PUSHp(tmps, strlen(tmps));
5454 DIE(aTHX_ PL_no_func, "getlogin");
5458 /* Miscellaneous. */
5463 dSP; dMARK; dORIGMARK; dTARGET;
5464 register I32 items = SP - MARK;
5465 unsigned long a[20];
5471 while (++MARK <= SP) {
5472 if (SvTAINTED(*MARK)) {
5478 TAINT_PROPER("syscall");
5481 /* This probably won't work on machines where sizeof(long) != sizeof(int)
5482 * or where sizeof(long) != sizeof(char*). But such machines will
5483 * not likely have syscall implemented either, so who cares?
5485 while (++MARK <= SP) {
5486 if (SvNIOK(*MARK) || !i)
5487 a[i++] = SvIV(*MARK);
5488 else if (*MARK == &PL_sv_undef)
5491 a[i++] = (unsigned long)SvPV_force(*MARK, n_a);
5497 DIE(aTHX_ "Too many args to syscall");
5499 DIE(aTHX_ "Too few args to syscall");
5501 retval = syscall(a[0]);
5504 retval = syscall(a[0],a[1]);
5507 retval = syscall(a[0],a[1],a[2]);
5510 retval = syscall(a[0],a[1],a[2],a[3]);
5513 retval = syscall(a[0],a[1],a[2],a[3],a[4]);
5516 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5]);
5519 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6]);
5522 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7]);
5526 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8]);
5529 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9]);
5532 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5536 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5540 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5544 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5545 a[10],a[11],a[12],a[13]);
5547 #endif /* atarist */
5553 DIE(aTHX_ PL_no_func, "syscall");
5557 #ifdef FCNTL_EMULATE_FLOCK
5559 /* XXX Emulate flock() with fcntl().
5560 What's really needed is a good file locking module.
5564 fcntl_emulate_flock(int fd, int operation)
5568 switch (operation & ~LOCK_NB) {
5570 flock.l_type = F_RDLCK;
5573 flock.l_type = F_WRLCK;
5576 flock.l_type = F_UNLCK;
5582 flock.l_whence = SEEK_SET;
5583 flock.l_start = flock.l_len = (Off_t)0;
5585 return fcntl(fd, (operation & LOCK_NB) ? F_SETLK : F_SETLKW, &flock);
5588 #endif /* FCNTL_EMULATE_FLOCK */
5590 #ifdef LOCKF_EMULATE_FLOCK
5592 /* XXX Emulate flock() with lockf(). This is just to increase
5593 portability of scripts. The calls are not completely
5594 interchangeable. What's really needed is a good file
5598 /* The lockf() constants might have been defined in <unistd.h>.
5599 Unfortunately, <unistd.h> causes troubles on some mixed
5600 (BSD/POSIX) systems, such as SunOS 4.1.3.
5602 Further, the lockf() constants aren't POSIX, so they might not be
5603 visible if we're compiling with _POSIX_SOURCE defined. Thus, we'll
5604 just stick in the SVID values and be done with it. Sigh.
5608 # define F_ULOCK 0 /* Unlock a previously locked region */
5611 # define F_LOCK 1 /* Lock a region for exclusive use */
5614 # define F_TLOCK 2 /* Test and lock a region for exclusive use */
5617 # define F_TEST 3 /* Test a region for other processes locks */
5621 lockf_emulate_flock(int fd, int operation)
5627 /* flock locks entire file so for lockf we need to do the same */
5629 pos = PerlLIO_lseek(fd, (Off_t)0, SEEK_CUR); /* get pos to restore later */
5630 if (pos > 0) /* is seekable and needs to be repositioned */
5631 if (PerlLIO_lseek(fd, (Off_t)0, SEEK_SET) < 0)
5632 pos = -1; /* seek failed, so don't seek back afterwards */
5635 switch (operation) {
5637 /* LOCK_SH - get a shared lock */
5639 /* LOCK_EX - get an exclusive lock */
5641 i = lockf (fd, F_LOCK, 0);
5644 /* LOCK_SH|LOCK_NB - get a non-blocking shared lock */
5645 case LOCK_SH|LOCK_NB:
5646 /* LOCK_EX|LOCK_NB - get a non-blocking exclusive lock */
5647 case LOCK_EX|LOCK_NB:
5648 i = lockf (fd, F_TLOCK, 0);
5650 if ((errno == EAGAIN) || (errno == EACCES))
5651 errno = EWOULDBLOCK;
5654 /* LOCK_UN - unlock (non-blocking is a no-op) */
5656 case LOCK_UN|LOCK_NB:
5657 i = lockf (fd, F_ULOCK, 0);
5660 /* Default - can't decipher operation */
5667 if (pos > 0) /* need to restore position of the handle */
5668 PerlLIO_lseek(fd, pos, SEEK_SET); /* ignore error here */
5673 #endif /* LOCKF_EMULATE_FLOCK */