3 * Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
4 * 2004, 2005, 2006, 2007, 2008 by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
12 * But only a short way ahead its floor and the walls on either side were
13 * cloven by a great fissure, out of which the red glare came, now leaping
14 * up, now dying down into darkness; and all the while far below there was
15 * a rumour and a trouble as of great engines throbbing and labouring.
17 * [p.945 of _The Lord of the Rings_, VI/iii: "Mount Doom"]
20 /* This file contains system pp ("push/pop") functions that
21 * execute the opcodes that make up a perl program. A typical pp function
22 * expects to find its arguments on the stack, and usually pushes its
23 * results onto the stack, hence the 'pp' terminology. Each OP structure
24 * contains a pointer to the relevant pp_foo() function.
26 * By 'system', we mean ops which interact with the OS, such as pp_open().
30 #define PERL_IN_PP_SYS_C
35 /* Shadow password support for solaris - pdo@cs.umd.edu
36 * Not just Solaris: at least HP-UX, IRIX, Linux.
37 * The API is from SysV.
39 * There are at least two more shadow interfaces,
40 * see the comments in pp_gpwent().
44 /* There is a MAXINT coming from <shadow.h> <- <hpsecurity.h> <- <values.h>
45 * and another MAXINT from "perl.h" <- <sys/param.h>. */
52 # include <sys/resource.h>
61 # include <sys/select.h>
65 /* XXX Configure test needed.
66 h_errno might not be a simple 'int', especially for multi-threaded
67 applications, see "extern int errno in perl.h". Creating such
68 a test requires taking into account the differences between
69 compiling multithreaded and singlethreaded ($ccflags et al).
70 HOST_NOT_FOUND is typically defined in <netdb.h>.
72 #if defined(HOST_NOT_FOUND) && !defined(h_errno) && !defined(__CYGWIN__)
81 struct passwd *getpwnam (char *);
82 struct passwd *getpwuid (Uid_t);
87 struct passwd *getpwent (void);
88 #elif defined (VMS) && defined (my_getpwent)
89 struct passwd *Perl_my_getpwent (pTHX);
98 struct group *getgrnam (char *);
99 struct group *getgrgid (Gid_t);
103 struct group *getgrent (void);
109 # if defined(_MSC_VER) || defined(__MINGW32__)
110 # include <sys/utime.h>
117 # ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
120 # define my_chsize PerlLIO_chsize
123 # define my_chsize PerlLIO_chsize
125 I32 my_chsize(int fd, Off_t length);
131 #else /* no flock() */
133 /* fcntl.h might not have been included, even if it exists, because
134 the current Configure only sets I_FCNTL if it's needed to pick up
135 the *_OK constants. Make sure it has been included before testing
136 the fcntl() locking constants. */
137 # if defined(HAS_FCNTL) && !defined(I_FCNTL)
141 # if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
142 # define FLOCK fcntl_emulate_flock
143 # define FCNTL_EMULATE_FLOCK
144 # else /* no flock() or fcntl(F_SETLK,...) */
146 # define FLOCK lockf_emulate_flock
147 # define LOCKF_EMULATE_FLOCK
149 # endif /* no flock() or fcntl(F_SETLK,...) */
152 static int FLOCK (int, int);
155 * These are the flock() constants. Since this sytems doesn't have
156 * flock(), the values of the constants are probably not available.
170 # endif /* emulating flock() */
172 #endif /* no flock() */
175 static const char zero_but_true[ZBTLEN + 1] = "0 but true";
177 #if defined(I_SYS_ACCESS) && !defined(R_OK)
178 # include <sys/access.h>
184 /* Missing protos on LynxOS */
185 void sethostent(int);
186 void endhostent(void);
188 void endnetent(void);
189 void setprotoent(int);
190 void endprotoent(void);
191 void setservent(int);
192 void endservent(void);
196 # include "amigaos4/amigaio.h"
199 #undef PERL_EFF_ACCESS /* EFFective uid/gid ACCESS */
201 /* F_OK unused: if stat() cannot find it... */
203 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
204 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
205 # define PERL_EFF_ACCESS(p,f) (access((p), (f) | EFF_ONLY_OK))
208 #if !defined(PERL_EFF_ACCESS) && defined(HAS_EACCESS)
209 # ifdef I_SYS_SECURITY
210 # include <sys/security.h>
214 # define PERL_EFF_ACCESS(p,f) (eaccess((p), (f), ACC_SELF))
217 # define PERL_EFF_ACCESS(p,f) (eaccess((p), (f)))
221 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESSX) && defined(ACC_SELF)
223 # define PERL_EFF_ACCESS(p,f) (accessx((p), (f), ACC_SELF))
227 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) \
228 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
229 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
232 S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
234 const Uid_t ruid = getuid();
235 const Uid_t euid = geteuid();
236 const Gid_t rgid = getgid();
237 const Gid_t egid = getegid();
240 #if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
241 Perl_croak(aTHX_ "switching effective uid is not implemented");
244 if (setreuid(euid, ruid))
247 if (setresuid(euid, ruid, (Uid_t)-1))
250 /* diag_listed_as: entering effective %s failed */
251 Perl_croak(aTHX_ "entering effective uid failed");
254 #if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
255 Perl_croak(aTHX_ "switching effective gid is not implemented");
258 if (setregid(egid, rgid))
261 if (setresgid(egid, rgid, (Gid_t)-1))
264 /* diag_listed_as: entering effective %s failed */
265 Perl_croak(aTHX_ "entering effective gid failed");
268 res = access(path, mode);
271 if (setreuid(ruid, euid))
274 if (setresuid(ruid, euid, (Uid_t)-1))
277 /* diag_listed_as: leaving effective %s failed */
278 Perl_croak(aTHX_ "leaving effective uid failed");
281 if (setregid(rgid, egid))
284 if (setresgid(rgid, egid, (Gid_t)-1))
287 /* diag_listed_as: leaving effective %s failed */
288 Perl_croak(aTHX_ "leaving effective gid failed");
292 # define PERL_EFF_ACCESS(p,f) (S_emulate_eaccess(aTHX_ (p), (f)))
299 const char * const tmps = POPpconstx;
300 const I32 gimme = GIMME_V;
301 const char *mode = "r";
304 if (PL_op->op_private & OPpOPEN_IN_RAW)
306 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
308 fp = PerlProc_popen(tmps, mode);
310 const char * const type = Perl_PerlIO_context_layers(aTHX_ NULL);
312 PerlIO_apply_layers(aTHX_ fp,mode,type);
314 if (gimme == G_VOID) {
316 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
319 else if (gimme == G_SCALAR) {
320 ENTER_with_name("backtick");
322 PL_rs = &PL_sv_undef;
323 sv_setpvs(TARG, ""); /* note that this preserves previous buffer */
324 while (sv_gets(TARG, fp, SvCUR(TARG)) != NULL)
326 LEAVE_with_name("backtick");
332 SV * const sv = newSV(79);
333 if (sv_gets(sv, fp, 0) == NULL) {
338 if (SvLEN(sv) - SvCUR(sv) > 20) {
339 SvPV_shrink_to_cur(sv);
344 STATUS_NATIVE_CHILD_SET(PerlProc_pclose(fp));
345 TAINT; /* "I believe that this is not gratuitous!" */
348 STATUS_NATIVE_CHILD_SET(-1);
349 if (gimme == G_SCALAR)
360 GV * const gv = (PL_op->op_flags & OPf_SPECIAL) ? NULL : (GV *)POPs;
364 /* make a copy of the pattern if it is gmagical, to ensure that magic
365 * is called once and only once */
366 if (SvGMAGICAL(TOPs)) TOPs = sv_2mortal(newSVsv(TOPs));
368 tryAMAGICunTARGETlist(iter_amg, (PL_op->op_flags & OPf_SPECIAL));
370 if (PL_op->op_flags & OPf_SPECIAL) {
371 /* call Perl-level glob function instead. Stack args are:
373 * and following OPs should be: gv(CORE::GLOBAL::glob), entersub
382 /* Note that we only ever get here if File::Glob fails to load
383 * without at the same time croaking, for some reason, or if
384 * perl was built with PERL_EXTERNAL_GLOB */
386 ENTER_with_name("glob");
391 * The external globbing program may use things we can't control,
392 * so for security reasons we must assume the worst.
395 taint_proper(PL_no_security, "glob");
399 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
402 SAVESPTR(PL_rs); /* This is not permanent, either. */
403 PL_rs = newSVpvs_flags("\000", SVs_TEMP);
406 *SvPVX(PL_rs) = '\n';
410 result = do_readline();
411 LEAVE_with_name("glob");
417 PL_last_in_gv = cGVOP_gv;
418 return do_readline();
428 do_join(TARG, &PL_sv_no, MARK, SP);
432 else if (SP == MARK) {
439 if (SvGMAGICAL(exsv)) exsv = sv_mortalcopy(exsv);
442 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
443 /* well-formed exception supplied */
446 SV * const errsv = ERRSV;
449 if (SvGMAGICAL(errsv)) {
450 exsv = sv_newmortal();
451 sv_setsv_nomg(exsv, errsv);
455 else if (SvPOKp(errsv) ? SvCUR(errsv) : SvNIOKp(errsv)) {
456 exsv = sv_newmortal();
457 sv_setsv_nomg(exsv, errsv);
458 sv_catpvs(exsv, "\t...caught");
461 exsv = newSVpvs_flags("Warning: something's wrong", SVs_TEMP);
464 if (SvROK(exsv) && !PL_warnhook)
465 Perl_warn(aTHX_ "%"SVf, SVfARG(exsv));
477 VMSISH_HUSHED || (PL_curcop->op_private & OPpHUSH_VMSISH);
479 if (SP - MARK != 1) {
481 do_join(TARG, &PL_sv_no, MARK, SP);
489 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
490 /* well-formed exception supplied */
493 SV * const errsv = ERRSV;
497 if (sv_isobject(exsv)) {
498 HV * const stash = SvSTASH(SvRV(exsv));
499 GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
501 SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
502 SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
509 call_sv(MUTABLE_SV(GvCV(gv)),
510 G_SCALAR|G_EVAL|G_KEEPERR);
511 exsv = sv_mortalcopy(*PL_stack_sp--);
515 else if (SvPOK(errsv) && SvCUR(errsv)) {
516 exsv = sv_mortalcopy(errsv);
517 sv_catpvs(exsv, "\t...propagated");
520 exsv = newSVpvs_flags("Died", SVs_TEMP);
524 NOT_REACHED; /* NOTREACHED */
525 return NULL; /* avoid missing return from non-void function warning */
531 Perl_tied_method(pTHX_ SV *methname, SV **sp, SV *const sv,
532 const MAGIC *const mg, const U32 flags, U32 argc, ...)
538 PERL_ARGS_ASSERT_TIED_METHOD;
540 /* Ensure that our flag bits do not overlap. */
541 STATIC_ASSERT_STMT((TIED_METHOD_MORTALIZE_NOT_NEEDED & G_WANT) == 0);
542 STATIC_ASSERT_STMT((TIED_METHOD_ARGUMENTS_ON_STACK & G_WANT) == 0);
543 STATIC_ASSERT_STMT((TIED_METHOD_SAY & G_WANT) == 0);
545 PUTBACK; /* sp is at *foot* of args, so this pops args from old stack */
546 PUSHSTACKi(PERLSI_MAGIC);
547 /* extend for object + args. If argc might wrap/truncate when cast
548 * to SSize_t and incremented, set to -1, which will trigger a panic in
550 * The weird way this is written is because g++ is dumb enough to
551 * warn "comparison is always false" on something like:
553 * sizeof(a) >= sizeof(b) && a >= B_t_MAX -1
555 * (where the LH condition is false)
558 (argc > (sizeof(argc) >= sizeof(SSize_t) ? SSize_t_MAX - 1 : argc))
559 ? -1 : (SSize_t)argc + 1;
560 EXTEND(SP, extend_size);
562 PUSHs(SvTIED_obj(sv, mg));
563 if (flags & TIED_METHOD_ARGUMENTS_ON_STACK) {
564 Copy(orig_sp + 2, sp + 1, argc, SV*); /* copy args to new stack */
568 const U32 mortalize_not_needed
569 = flags & TIED_METHOD_MORTALIZE_NOT_NEEDED;
571 va_start(args, argc);
573 SV *const arg = va_arg(args, SV *);
574 if(mortalize_not_needed)
583 ENTER_with_name("call_tied_method");
584 if (flags & TIED_METHOD_SAY) {
585 /* local $\ = "\n" */
586 SAVEGENERICSV(PL_ors_sv);
587 PL_ors_sv = newSVpvs("\n");
589 ret_args = call_sv(methname, (flags & G_WANT)|G_METHOD_NAMED);
594 if (ret_args) { /* copy results back to original stack */
595 EXTEND(sp, ret_args);
596 Copy(orig_sp - ret_args + 1, sp + 1, ret_args, SV*);
600 LEAVE_with_name("call_tied_method");
604 #define tied_method0(a,b,c,d) \
605 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,0)
606 #define tied_method1(a,b,c,d,e) \
607 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,1,e)
608 #define tied_method2(a,b,c,d,e,f) \
609 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,2,e,f)
622 GV * const gv = MUTABLE_GV(*++MARK);
624 if (!isGV(gv) && !(SvTYPE(gv) == SVt_PVLV && isGV_with_GP(gv)))
625 DIE(aTHX_ PL_no_usym, "filehandle");
627 if ((io = GvIOp(gv))) {
629 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
632 Perl_ck_warner_d(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
633 "Opening dirhandle %"HEKf" also as a file",
634 HEKfARG(GvENAME_HEK(gv)));
636 mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
638 /* Method's args are same as ours ... */
639 /* ... except handle is replaced by the object */
640 return Perl_tied_method(aTHX_ SV_CONST(OPEN), mark - 1, MUTABLE_SV(io), mg,
641 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
653 tmps = SvPV_const(sv, len);
654 ok = do_open6(gv, tmps, len, NULL, MARK+1, (SP-MARK));
657 PUSHi( (I32)PL_forkprocess );
658 else if (PL_forkprocess == 0) /* we are a new child */
669 MAXARG == 0 || (!TOPs && !POPs) ? PL_defoutgv : MUTABLE_GV(POPs);
675 IO * const io = GvIO(gv);
677 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
679 return tied_method0(SV_CONST(CLOSE), SP, MUTABLE_SV(io), mg);
683 PUSHs(boolSV(do_close(gv, TRUE)));
695 GV * const wgv = MUTABLE_GV(POPs);
696 GV * const rgv = MUTABLE_GV(POPs);
700 do_close(rgv, FALSE);
704 do_close(wgv, FALSE);
706 if (PerlProc_pipe(fd) < 0)
709 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
710 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
711 IoOFP(rstio) = IoIFP(rstio);
712 IoIFP(wstio) = IoOFP(wstio);
713 IoTYPE(rstio) = IoTYPE_RDONLY;
714 IoTYPE(wstio) = IoTYPE_WRONLY;
716 if (!IoIFP(rstio) || !IoOFP(wstio)) {
718 PerlIO_close(IoIFP(rstio));
720 PerlLIO_close(fd[0]);
722 PerlIO_close(IoOFP(wstio));
724 PerlLIO_close(fd[1]);
727 #if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
728 /* ensure close-on-exec */
729 if ((fd[0] > PL_maxsysfd && fcntl(fd[0], F_SETFD, FD_CLOEXEC) < 0) ||
730 (fd[1] > PL_maxsysfd && fcntl(fd[1], F_SETFD, FD_CLOEXEC) < 0))
738 DIE(aTHX_ PL_no_func, "pipe");
752 gv = MUTABLE_GV(POPs);
756 && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar)))
758 return tied_method0(SV_CONST(FILENO), SP, MUTABLE_SV(io), mg);
761 if (io && IoDIRP(io)) {
762 #if defined(HAS_DIRFD) || defined(HAS_DIR_DD_FD)
763 PUSHi(my_dirfd(IoDIRP(io)));
765 #elif defined(ENOTSUP)
766 errno = ENOTSUP; /* Operation not supported */
768 #elif defined(EOPNOTSUPP)
769 errno = EOPNOTSUPP; /* Operation not supported on socket */
772 errno = EINVAL; /* Invalid argument */
777 if (!io || !(fp = IoIFP(io))) {
778 /* Can't do this because people seem to do things like
779 defined(fileno($foo)) to check whether $foo is a valid fh.
786 PUSHi(PerlIO_fileno(fp));
797 if (MAXARG < 1 || (!TOPs && !POPs)) {
798 anum = PerlLIO_umask(022);
799 /* setting it to 022 between the two calls to umask avoids
800 * to have a window where the umask is set to 0 -- meaning
801 * that another thread could create world-writeable files. */
803 (void)PerlLIO_umask(anum);
806 anum = PerlLIO_umask(POPi);
807 TAINT_PROPER("umask");
810 /* Only DIE if trying to restrict permissions on "user" (self).
811 * Otherwise it's harmless and more useful to just return undef
812 * since 'group' and 'other' concepts probably don't exist here. */
813 if (MAXARG >= 1 && (TOPs||POPs) && (POPi & 0700))
814 DIE(aTHX_ "umask not implemented");
815 XPUSHs(&PL_sv_undef);
834 gv = MUTABLE_GV(POPs);
838 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
840 /* This takes advantage of the implementation of the varargs
841 function, which I don't think that the optimiser will be able to
842 figure out. Although, as it's a static function, in theory it
844 return Perl_tied_method(aTHX_ SV_CONST(BINMODE), SP, MUTABLE_SV(io), mg,
845 G_SCALAR|TIED_METHOD_MORTALIZE_NOT_NEEDED,
846 discp ? 1 : 0, discp);
850 if (!io || !(fp = IoIFP(io))) {
852 SETERRNO(EBADF,RMS_IFI);
859 const char *d = NULL;
862 d = SvPV_const(discp, len);
863 mode = mode_from_discipline(d, len);
864 if (PerlIO_binmode(aTHX_ fp, IoTYPE(io), mode, d)) {
865 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
866 if (!PerlIO_binmode(aTHX_ IoOFP(io), IoTYPE(io), mode, d)) {
887 const I32 markoff = MARK - PL_stack_base;
888 const char *methname;
889 int how = PERL_MAGIC_tied;
893 switch(SvTYPE(varsv)) {
897 methname = "TIEHASH";
898 if (HvLAZYDEL(varsv) && (entry = HvEITER((HV *)varsv))) {
899 HvLAZYDEL_off(varsv);
900 hv_free_ent((HV *)varsv, entry);
902 HvEITER_set(MUTABLE_HV(varsv), 0);
906 methname = "TIEARRAY";
907 if (!AvREAL(varsv)) {
909 Perl_croak(aTHX_ "Cannot tie unreifiable array");
910 av_clear((AV *)varsv);
917 if (isGV_with_GP(varsv) && !SvFAKE(varsv)) {
918 methname = "TIEHANDLE";
919 how = PERL_MAGIC_tiedscalar;
920 /* For tied filehandles, we apply tiedscalar magic to the IO
921 slot of the GP rather than the GV itself. AMS 20010812 */
923 GvIOp(varsv) = newIO();
924 varsv = MUTABLE_SV(GvIOp(varsv));
927 if (SvTYPE(varsv) == SVt_PVLV && LvTYPE(varsv) == 'y') {
928 vivify_defelem(varsv);
929 varsv = LvTARG(varsv);
933 methname = "TIESCALAR";
934 how = PERL_MAGIC_tiedscalar;
938 if (sv_isobject(*MARK)) { /* Calls GET magic. */
939 ENTER_with_name("call_TIE");
940 PUSHSTACKi(PERLSI_MAGIC);
942 EXTEND(SP,(I32)items);
946 call_method(methname, G_SCALAR);
949 /* Can't use call_method here, else this: fileno FOO; tie @a, "FOO"
950 * will attempt to invoke IO::File::TIEARRAY, with (best case) the
951 * wrong error message, and worse case, supreme action at a distance.
952 * (Sorry obfuscation writers. You're not going to be given this one.)
954 stash = gv_stashsv(*MARK, 0);
955 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
956 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
957 methname, SVfARG(SvOK(*MARK) ? *MARK : &PL_sv_no));
959 ENTER_with_name("call_TIE");
960 PUSHSTACKi(PERLSI_MAGIC);
962 EXTEND(SP,(I32)items);
966 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
972 if (sv_isobject(sv)) {
973 sv_unmagic(varsv, how);
974 /* Croak if a self-tie on an aggregate is attempted. */
975 if (varsv == SvRV(sv) &&
976 (SvTYPE(varsv) == SVt_PVAV ||
977 SvTYPE(varsv) == SVt_PVHV))
979 "Self-ties of arrays and hashes are not supported");
980 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
982 LEAVE_with_name("call_TIE");
983 SP = PL_stack_base + markoff;
989 /* also used for: pp_dbmclose() */
996 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
997 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
999 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
1002 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y' &&
1003 !(sv = defelem_target(sv, NULL))) RETPUSHUNDEF;
1005 if ((mg = SvTIED_mg(sv, how))) {
1006 SV * const obj = SvRV(SvTIED_obj(sv, mg));
1008 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
1010 if (gv && isGV(gv) && (cv = GvCV(gv))) {
1012 PUSHs(SvTIED_obj(MUTABLE_SV(gv), mg));
1013 mXPUSHi(SvREFCNT(obj) - 1);
1015 ENTER_with_name("call_UNTIE");
1016 call_sv(MUTABLE_SV(cv), G_VOID);
1017 LEAVE_with_name("call_UNTIE");
1020 else if (mg && SvREFCNT(obj) > 1) {
1021 Perl_ck_warner(aTHX_ packWARN(WARN_UNTIE),
1022 "untie attempted while %"UVuf" inner references still exist",
1023 (UV)SvREFCNT(obj) - 1 ) ;
1027 sv_unmagic(sv, how) ;
1036 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
1037 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
1039 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
1042 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y' &&
1043 !(sv = defelem_target(sv, NULL))) goto ret_undef;
1045 if ((mg = SvTIED_mg(sv, how))) {
1046 SETs(SvTIED_obj(sv, mg));
1047 return NORMAL; /* PUTBACK not needed, pp_tied never moves SP */
1061 HV * const hv = MUTABLE_HV(POPs);
1062 SV * const sv = newSVpvs_flags("AnyDBM_File", SVs_TEMP);
1063 stash = gv_stashsv(sv, 0);
1064 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
1066 require_pv("AnyDBM_File.pm");
1068 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH")))
1069 DIE(aTHX_ "No dbm on this machine");
1079 mPUSHu(O_RDWR|O_CREAT);
1083 if (!SvOK(right)) right = &PL_sv_no;
1087 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
1090 if (!sv_isobject(TOPs)) {
1098 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
1100 if (sv_isobject(TOPs))
1105 sv_unmagic(MUTABLE_SV(hv), PERL_MAGIC_tied);
1106 sv_magic(MUTABLE_SV(hv), TOPs, PERL_MAGIC_tied, NULL, 0);
1123 struct timeval timebuf;
1124 struct timeval *tbuf = &timebuf;
1127 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1132 # if BYTEORDER & 0xf0000
1133 # define ORDERBYTE (0x88888888 - BYTEORDER)
1135 # define ORDERBYTE (0x4444 - BYTEORDER)
1141 for (i = 1; i <= 3; i++) {
1142 SV * const sv = SP[i];
1146 if (SvREADONLY(sv)) {
1147 if (!(SvPOK(sv) && SvCUR(sv) == 0))
1148 Perl_croak_no_modify();
1150 else if (SvIsCOW(sv)) sv_force_normal_flags(sv, 0);
1153 Perl_ck_warner(aTHX_ packWARN(WARN_MISC),
1154 "Non-string passed as bitmask");
1155 SvPV_force_nomg_nolen(sv); /* force string conversion */
1162 /* little endians can use vecs directly */
1163 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1170 masksize = NFDBITS / NBBY;
1172 masksize = sizeof(long); /* documented int, everyone seems to use long */
1174 Zero(&fd_sets[0], 4, char*);
1177 # if SELECT_MIN_BITS == 1
1178 growsize = sizeof(fd_set);
1180 # if defined(__GLIBC__) && defined(__FD_SETSIZE)
1181 # undef SELECT_MIN_BITS
1182 # define SELECT_MIN_BITS __FD_SETSIZE
1184 /* If SELECT_MIN_BITS is greater than one we most probably will want
1185 * to align the sizes with SELECT_MIN_BITS/8 because for example
1186 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
1187 * UNIX, Solaris, Darwin) the smallest quantum select() operates
1188 * on (sets/tests/clears bits) is 32 bits. */
1189 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
1195 value = SvNV_nomg(sv);
1198 timebuf.tv_sec = (long)value;
1199 value -= (NV)timebuf.tv_sec;
1200 timebuf.tv_usec = (long)(value * 1000000.0);
1205 for (i = 1; i <= 3; i++) {
1207 if (!SvOK(sv) || SvCUR(sv) == 0) {
1214 Sv_Grow(sv, growsize);
1218 while (++j <= growsize) {
1222 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1224 Newx(fd_sets[i], growsize, char);
1225 for (offset = 0; offset < growsize; offset += masksize) {
1226 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1227 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1230 fd_sets[i] = SvPVX(sv);
1234 #ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1235 /* Can't make just the (void*) conditional because that would be
1236 * cpp #if within cpp macro, and not all compilers like that. */
1237 nfound = PerlSock_select(
1239 (Select_fd_set_t) fd_sets[1],
1240 (Select_fd_set_t) fd_sets[2],
1241 (Select_fd_set_t) fd_sets[3],
1242 (void*) tbuf); /* Workaround for compiler bug. */
1244 nfound = PerlSock_select(
1246 (Select_fd_set_t) fd_sets[1],
1247 (Select_fd_set_t) fd_sets[2],
1248 (Select_fd_set_t) fd_sets[3],
1251 for (i = 1; i <= 3; i++) {
1254 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1256 for (offset = 0; offset < growsize; offset += masksize) {
1257 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1258 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1260 Safefree(fd_sets[i]);
1267 if (GIMME_V == G_ARRAY && tbuf) {
1268 value = (NV)(timebuf.tv_sec) +
1269 (NV)(timebuf.tv_usec) / 1000000.0;
1274 DIE(aTHX_ "select not implemented");
1282 =for apidoc setdefout
1284 Sets C<PL_defoutgv>, the default file handle for output, to the passed in
1285 typeglob. As C<PL_defoutgv> "owns" a reference on its typeglob, the reference
1286 count of the passed in typeglob is increased by one, and the reference count
1287 of the typeglob that C<PL_defoutgv> points to is decreased by one.
1293 Perl_setdefout(pTHX_ GV *gv)
1295 PERL_ARGS_ASSERT_SETDEFOUT;
1296 SvREFCNT_inc_simple_void_NN(gv);
1297 SvREFCNT_dec(PL_defoutgv);
1305 GV * const newdefout = (PL_op->op_private > 0) ? (MUTABLE_GV(POPs)) : NULL;
1306 GV * egv = GvEGVx(PL_defoutgv);
1311 hv = isGV_with_GP(egv) ? GvSTASH(egv) : NULL;
1312 gvp = hv && HvENAME(hv)
1313 ? (GV**)hv_fetch(hv, GvNAME(egv), HEK_UTF8(GvNAME_HEK(egv)) ? -GvNAMELEN(egv) : GvNAMELEN(egv), FALSE)
1315 if (gvp && *gvp == egv) {
1316 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
1320 mXPUSHs(newRV(MUTABLE_SV(egv)));
1324 if (!GvIO(newdefout))
1325 gv_IOadd(newdefout);
1326 setdefout(newdefout);
1336 MAXARG==0 || (!TOPs && !POPs) ? PL_stdingv : MUTABLE_GV(POPs);
1337 IO *const io = GvIO(gv);
1343 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1345 const U32 gimme = GIMME_V;
1346 Perl_tied_method(aTHX_ SV_CONST(GETC), SP, MUTABLE_SV(io), mg, gimme, 0);
1347 if (gimme == G_SCALAR) {
1349 SvSetMagicSV_nosteal(TARG, TOPs);
1354 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
1355 if (!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
1357 SETERRNO(EBADF,RMS_IFI);
1361 sv_setpvs(TARG, " ");
1362 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
1363 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1364 /* Find out how many bytes the char needs */
1365 Size_t len = UTF8SKIP(SvPVX_const(TARG));
1368 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1369 SvCUR_set(TARG,1+len);
1373 else SvUTF8_off(TARG);
1379 S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
1382 const I32 gimme = GIMME_V;
1384 PERL_ARGS_ASSERT_DOFORM;
1387 cv = MUTABLE_CV(sv_2mortal(MUTABLE_SV(cv_clone(cv))));
1389 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
1390 PUSHFORMAT(cx, retop);
1391 if (CvDEPTH(cv) >= 2) {
1392 PERL_STACK_OVERFLOW_CHECK();
1393 pad_push(CvPADLIST(cv), CvDEPTH(cv));
1395 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), CvDEPTH(cv));
1397 setdefout(gv); /* locally select filehandle so $% et al work */
1415 gv = MUTABLE_GV(POPs);
1432 tmpsv = sv_newmortal();
1433 gv_efullname4(tmpsv, fgv, NULL, FALSE);
1434 DIE(aTHX_ "Undefined format \"%"SVf"\" called", SVfARG(tmpsv));
1436 IoFLAGS(io) &= ~IOf_DIDTOP;
1437 RETURNOP(doform(cv,gv,PL_op->op_next));
1443 GV * const gv = cxstack[cxstack_ix].blk_format.gv;
1444 IO * const io = GvIOp(gv);
1449 bool is_return = cBOOL(PL_op->op_type == OP_RETURN);
1451 if (is_return || !io || !(ofp = IoOFP(io)))
1454 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
1455 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
1457 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1458 PL_formtarget != PL_toptarget)
1462 if (!IoTOP_GV(io)) {
1465 if (!IoTOP_NAME(io)) {
1467 if (!IoFMT_NAME(io))
1468 IoFMT_NAME(io) = savepv(GvNAME(gv));
1469 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%"HEKf"_TOP",
1470 HEKfARG(GvNAME_HEK(gv))));
1471 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
1472 if ((topgv && GvFORM(topgv)) ||
1473 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
1474 IoTOP_NAME(io) = savesvpv(topname);
1476 IoTOP_NAME(io) = savepvs("top");
1478 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
1479 if (!topgv || !GvFORM(topgv)) {
1480 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1483 IoTOP_GV(io) = topgv;
1485 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1486 I32 lines = IoLINES_LEFT(io);
1487 const char *s = SvPVX_const(PL_formtarget);
1488 if (lines <= 0) /* Yow, header didn't even fit!!! */
1490 while (lines-- > 0) {
1491 s = strchr(s, '\n');
1497 const STRLEN save = SvCUR(PL_formtarget);
1498 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
1499 do_print(PL_formtarget, ofp);
1500 SvCUR_set(PL_formtarget, save);
1501 sv_chop(PL_formtarget, s);
1502 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
1505 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
1506 do_print(GvSV(gv_fetchpvs("\f", GV_ADD, SVt_PV)), ofp);
1507 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1509 PL_formtarget = PL_toptarget;
1510 IoFLAGS(io) |= IOf_DIDTOP;
1512 assert(fgv); /* IoTOP_GV(io) should have been set above */
1515 SV * const sv = sv_newmortal();
1516 gv_efullname4(sv, fgv, NULL, FALSE);
1517 DIE(aTHX_ "Undefined top format \"%"SVf"\" called", SVfARG(sv));
1519 return doform(cv, gv, PL_op);
1523 cx = &cxstack[cxstack_ix];
1524 assert(CxTYPE(cx) == CXt_FORMAT);
1525 SP = PL_stack_base + cx->blk_oldsp; /* ignore retval of formline */
1529 retop = cx->blk_sub.retop;
1533 /* XXX the semantics of doing 'return' in a format aren't documented.
1534 * Currently we ignore any args to 'return' and just return
1535 * a single undef in both scalar and list contexts
1537 PUSHs(&PL_sv_undef);
1538 else if (!io || !(fp = IoOFP(io))) {
1539 if (io && IoIFP(io))
1540 report_wrongway_fh(gv, '<');
1546 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
1547 Perl_ck_warner(aTHX_ packWARN(WARN_IO), "page overflow");
1549 if (!do_print(PL_formtarget, fp))
1552 FmLINES(PL_formtarget) = 0;
1553 SvCUR_set(PL_formtarget, 0);
1554 *SvEND(PL_formtarget) = '\0';
1555 if (IoFLAGS(io) & IOf_FLUSH)
1556 (void)PerlIO_flush(fp);
1560 PL_formtarget = PL_bodytarget;
1566 dSP; dMARK; dORIGMARK;
1570 = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv;
1571 IO *const io = GvIO(gv);
1573 /* Treat empty list as "" */
1574 if (MARK == SP) XPUSHs(&PL_sv_no);
1577 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1579 if (MARK == ORIGMARK) {
1582 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1585 return Perl_tied_method(aTHX_ SV_CONST(PRINTF), mark - 1, MUTABLE_SV(io),
1587 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1594 SETERRNO(EBADF,RMS_IFI);
1597 else if (!(fp = IoOFP(io))) {
1599 report_wrongway_fh(gv, '<');
1600 else if (ckWARN(WARN_CLOSED))
1602 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
1606 SV *sv = sv_newmortal();
1607 do_sprintf(sv, SP - MARK, MARK + 1);
1608 if (!do_print(sv, fp))
1611 if (IoFLAGS(io) & IOf_FLUSH)
1612 if (PerlIO_flush(fp) == EOF)
1621 PUSHs(&PL_sv_undef);
1628 const int perm = (MAXARG > 3 && (TOPs || POPs)) ? POPi : 0666;
1629 const int mode = POPi;
1630 SV * const sv = POPs;
1631 GV * const gv = MUTABLE_GV(POPs);
1634 /* Need TIEHANDLE method ? */
1635 const char * const tmps = SvPV_const(sv, len);
1636 if (do_open_raw(gv, tmps, len, mode, perm)) {
1637 IoLINES(GvIOp(gv)) = 0;
1641 PUSHs(&PL_sv_undef);
1647 /* also used for: pp_read() and pp_recv() (where supported) */
1651 dSP; dMARK; dORIGMARK; dTARGET;
1665 bool charstart = FALSE;
1666 STRLEN charskip = 0;
1668 GV * const gv = MUTABLE_GV(*++MARK);
1671 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1672 && gv && (io = GvIO(gv)) )
1674 const MAGIC *const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1676 return Perl_tied_method(aTHX_ SV_CONST(READ), mark - 1, MUTABLE_SV(io), mg,
1677 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1686 sv_setpvs(bufsv, "");
1687 length = SvIVx(*++MARK);
1689 DIE(aTHX_ "Negative length");
1692 offset = SvIVx(*++MARK);
1696 if (!io || !IoIFP(io)) {
1698 SETERRNO(EBADF,RMS_IFI);
1702 /* Note that fd can here validly be -1, don't check it yet. */
1703 fd = PerlIO_fileno(IoIFP(io));
1705 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
1706 if (PL_op->op_type == OP_SYSREAD || PL_op->op_type == OP_RECV) {
1707 Perl_ck_warner(aTHX_ packWARN(WARN_DEPRECATED),
1708 "%s() is deprecated on :utf8 handles",
1711 buffer = SvPVutf8_force(bufsv, blen);
1712 /* UTF-8 may not have been set if they are all low bytes */
1717 buffer = SvPV_force(bufsv, blen);
1718 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
1720 if (DO_UTF8(bufsv)) {
1721 blen = sv_len_utf8_nomg(bufsv);
1730 if (PL_op->op_type == OP_RECV) {
1731 Sock_size_t bufsize;
1732 char namebuf[MAXPATHLEN];
1734 SETERRNO(EBADF,SS_IVCHAN);
1737 #if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
1738 bufsize = sizeof (struct sockaddr_in);
1740 bufsize = sizeof namebuf;
1742 #ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1746 buffer = SvGROW(bufsv, (STRLEN)(length+1));
1747 /* 'offset' means 'flags' here */
1748 count = PerlSock_recvfrom(fd, buffer, length, offset,
1749 (struct sockaddr *)namebuf, &bufsize);
1752 /* MSG_TRUNC can give oversized count; quietly lose it */
1755 SvCUR_set(bufsv, count);
1756 *SvEND(bufsv) = '\0';
1757 (void)SvPOK_only(bufsv);
1761 /* This should not be marked tainted if the fp is marked clean */
1762 if (!(IoFLAGS(io) & IOf_UNTAINT))
1763 SvTAINTED_on(bufsv);
1765 #if defined(__CYGWIN__)
1766 /* recvfrom() on cygwin doesn't set bufsize at all for
1767 connected sockets, leaving us with trash in the returned
1768 name, so use the same test as the Win32 code to check if it
1769 wasn't set, and set it [perl #118843] */
1770 if (bufsize == sizeof namebuf)
1773 sv_setpvn(TARG, namebuf, bufsize);
1779 if (-offset > (SSize_t)blen)
1780 DIE(aTHX_ "Offset outside string");
1783 if (DO_UTF8(bufsv)) {
1784 /* convert offset-as-chars to offset-as-bytes */
1785 if (offset >= (SSize_t)blen)
1786 offset += SvCUR(bufsv) - blen;
1788 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
1792 /* Reestablish the fd in case it shifted from underneath us. */
1793 fd = PerlIO_fileno(IoIFP(io));
1795 orig_size = SvCUR(bufsv);
1796 /* Allocating length + offset + 1 isn't perfect in the case of reading
1797 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1799 (should be 2 * length + offset + 1, or possibly something longer if
1800 IN_ENCODING Is true) */
1801 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
1802 if (offset > 0 && offset > (SSize_t)orig_size) { /* Zero any newly allocated space */
1803 Zero(buffer+orig_size, offset-orig_size, char);
1805 buffer = buffer + offset;
1807 read_target = bufsv;
1809 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1810 concatenate it to the current buffer. */
1812 /* Truncate the existing buffer to the start of where we will be
1814 SvCUR_set(bufsv, offset);
1816 read_target = sv_newmortal();
1817 SvUPGRADE(read_target, SVt_PV);
1818 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1821 if (PL_op->op_type == OP_SYSREAD) {
1822 #ifdef PERL_SOCK_SYSREAD_IS_RECV
1823 if (IoTYPE(io) == IoTYPE_SOCKET) {
1825 SETERRNO(EBADF,SS_IVCHAN);
1829 count = PerlSock_recv(fd, buffer, length, 0);
1835 SETERRNO(EBADF,RMS_IFI);
1839 count = PerlLIO_read(fd, buffer, length);
1844 count = PerlIO_read(IoIFP(io), buffer, length);
1845 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1846 if (count == 0 && PerlIO_error(IoIFP(io)))
1850 if (IoTYPE(io) == IoTYPE_WRONLY)
1851 report_wrongway_fh(gv, '>');
1854 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1855 *SvEND(read_target) = '\0';
1856 (void)SvPOK_only(read_target);
1857 if (fp_utf8 && !IN_BYTES) {
1858 /* Look at utf8 we got back and count the characters */
1859 const char *bend = buffer + count;
1860 while (buffer < bend) {
1862 skip = UTF8SKIP(buffer);
1865 if (buffer - charskip + skip > bend) {
1866 /* partial character - try for rest of it */
1867 length = skip - (bend-buffer);
1868 offset = bend - SvPVX_const(bufsv);
1880 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1881 provided amount read (count) was what was requested (length)
1883 if (got < wanted && count == length) {
1884 length = wanted - got;
1885 offset = bend - SvPVX_const(bufsv);
1888 /* return value is character count */
1892 else if (buffer_utf8) {
1893 /* Let svcatsv upgrade the bytes we read in to utf8.
1894 The buffer is a mortal so will be freed soon. */
1895 sv_catsv_nomg(bufsv, read_target);
1898 /* This should not be marked tainted if the fp is marked clean */
1899 if (!(IoFLAGS(io) & IOf_UNTAINT))
1900 SvTAINTED_on(bufsv);
1911 /* also used for: pp_send() where defined */
1915 dSP; dMARK; dORIGMARK; dTARGET;
1920 STRLEN orig_blen_bytes;
1921 const int op_type = PL_op->op_type;
1924 GV *const gv = MUTABLE_GV(*++MARK);
1925 IO *const io = GvIO(gv);
1928 if (op_type == OP_SYSWRITE && io) {
1929 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1931 if (MARK == SP - 1) {
1933 mXPUSHi(sv_len(sv));
1937 return Perl_tied_method(aTHX_ SV_CONST(WRITE), mark - 1, MUTABLE_SV(io), mg,
1938 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1948 if (!io || !IoIFP(io) || IoTYPE(io) == IoTYPE_RDONLY) {
1950 if (io && IoIFP(io))
1951 report_wrongway_fh(gv, '<');
1954 SETERRNO(EBADF,RMS_IFI);
1957 fd = PerlIO_fileno(IoIFP(io));
1959 SETERRNO(EBADF,SS_IVCHAN);
1964 /* Do this first to trigger any overloading. */
1965 buffer = SvPV_const(bufsv, blen);
1966 orig_blen_bytes = blen;
1967 doing_utf8 = DO_UTF8(bufsv);
1969 if (PerlIO_isutf8(IoIFP(io))) {
1970 Perl_ck_warner(aTHX_ packWARN(WARN_DEPRECATED),
1971 "%s() is deprecated on :utf8 handles",
1973 if (!SvUTF8(bufsv)) {
1974 /* We don't modify the original scalar. */
1975 tmpbuf = bytes_to_utf8((const U8*) buffer, &blen);
1976 buffer = (char *) tmpbuf;
1980 else if (doing_utf8) {
1981 STRLEN tmplen = blen;
1982 U8 * const result = bytes_from_utf8((const U8*) buffer, &tmplen, &doing_utf8);
1985 buffer = (char *) tmpbuf;
1989 assert((char *)result == buffer);
1990 Perl_croak(aTHX_ "Wide character in %s", OP_DESC(PL_op));
1995 if (op_type == OP_SEND) {
1996 const int flags = SvIVx(*++MARK);
1999 char * const sockbuf = SvPVx(*++MARK, mlen);
2000 retval = PerlSock_sendto(fd, buffer, blen,
2001 flags, (struct sockaddr *)sockbuf, mlen);
2004 retval = PerlSock_send(fd, buffer, blen, flags);
2010 Size_t length = 0; /* This length is in characters. */
2016 /* The SV is bytes, and we've had to upgrade it. */
2017 blen_chars = orig_blen_bytes;
2019 /* The SV really is UTF-8. */
2020 /* Don't call sv_len_utf8 on a magical or overloaded
2021 scalar, as we might get back a different result. */
2022 blen_chars = sv_or_pv_len_utf8(bufsv, buffer, blen);
2029 length = blen_chars;
2031 #if Size_t_size > IVSIZE
2032 length = (Size_t)SvNVx(*++MARK);
2034 length = (Size_t)SvIVx(*++MARK);
2036 if ((SSize_t)length < 0) {
2038 DIE(aTHX_ "Negative length");
2043 offset = SvIVx(*++MARK);
2045 if (-offset > (IV)blen_chars) {
2047 DIE(aTHX_ "Offset outside string");
2049 offset += blen_chars;
2050 } else if (offset > (IV)blen_chars) {
2052 DIE(aTHX_ "Offset outside string");
2056 if (length > blen_chars - offset)
2057 length = blen_chars - offset;
2059 /* Here we convert length from characters to bytes. */
2060 if (tmpbuf || SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
2061 /* Either we had to convert the SV, or the SV is magical, or
2062 the SV has overloading, in which case we can't or mustn't
2063 or mustn't call it again. */
2065 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
2066 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
2068 /* It's a real UTF-8 SV, and it's not going to change under
2069 us. Take advantage of any cache. */
2071 I32 len_I32 = length;
2073 /* Convert the start and end character positions to bytes.
2074 Remember that the second argument to sv_pos_u2b is relative
2076 sv_pos_u2b(bufsv, &start, &len_I32);
2083 buffer = buffer+offset;
2085 #ifdef PERL_SOCK_SYSWRITE_IS_SEND
2086 if (IoTYPE(io) == IoTYPE_SOCKET) {
2087 retval = PerlSock_send(fd, buffer, length, 0);
2092 /* See the note at doio.c:do_print about filesize limits. --jhi */
2093 retval = PerlLIO_write(fd, buffer, length);
2101 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
2104 #if Size_t_size > IVSIZE
2124 * in Perl 5.12 and later, the additional parameter is a bitmask:
2127 * 2 = eof() <- ARGV magic
2129 * I'll rely on the compiler's trace flow analysis to decide whether to
2130 * actually assign this out here, or punt it into the only block where it is
2131 * used. Doing it out here is DRY on the condition logic.
2136 gv = PL_last_in_gv = MUTABLE_GV(POPs); /* eof(FH) */
2142 if (PL_op->op_flags & OPf_SPECIAL) {
2143 gv = PL_last_in_gv = GvEGVx(PL_argvgv); /* eof() - ARGV magic */
2147 gv = PL_last_in_gv; /* eof */
2155 if ((io = GvIO(gv)) && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) {
2156 return tied_method1(SV_CONST(EOF), SP, MUTABLE_SV(io), mg, newSVuv(which));
2159 if (!MAXARG && (PL_op->op_flags & OPf_SPECIAL)) { /* eof() */
2160 if (io && !IoIFP(io)) {
2161 if ((IoFLAGS(io) & IOf_START) && av_tindex(GvAVn(gv)) < 0) {
2164 IoFLAGS(io) &= ~IOf_START;
2165 do_open6(gv, "-", 1, NULL, NULL, 0);
2173 *svp = newSVpvs("-");
2175 else if (!nextargv(gv, FALSE))
2180 PUSHs(boolSV(do_eof(gv)));
2190 if (MAXARG != 0 && (TOPs || POPs))
2191 PL_last_in_gv = MUTABLE_GV(POPs);
2198 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
2200 return tied_method0(SV_CONST(TELL), SP, MUTABLE_SV(io), mg);
2205 SETERRNO(EBADF,RMS_IFI);
2210 #if LSEEKSIZE > IVSIZE
2211 PUSHn( do_tell(gv) );
2213 PUSHi( do_tell(gv) );
2219 /* also used for: pp_seek() */
2224 const int whence = POPi;
2225 #if LSEEKSIZE > IVSIZE
2226 const Off_t offset = (Off_t)SvNVx(POPs);
2228 const Off_t offset = (Off_t)SvIVx(POPs);
2231 GV * const gv = PL_last_in_gv = MUTABLE_GV(POPs);
2232 IO *const io = GvIO(gv);
2235 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
2237 #if LSEEKSIZE > IVSIZE
2238 SV *const offset_sv = newSVnv((NV) offset);
2240 SV *const offset_sv = newSViv(offset);
2243 return tied_method2(SV_CONST(SEEK), SP, MUTABLE_SV(io), mg, offset_sv,
2248 if (PL_op->op_type == OP_SEEK)
2249 PUSHs(boolSV(do_seek(gv, offset, whence)));
2251 const Off_t sought = do_sysseek(gv, offset, whence);
2253 PUSHs(&PL_sv_undef);
2255 SV* const sv = sought ?
2256 #if LSEEKSIZE > IVSIZE
2261 : newSVpvn(zero_but_true, ZBTLEN);
2271 /* There seems to be no consensus on the length type of truncate()
2272 * and ftruncate(), both off_t and size_t have supporters. In
2273 * general one would think that when using large files, off_t is
2274 * at least as wide as size_t, so using an off_t should be okay. */
2275 /* XXX Configure probe for the length type of *truncate() needed XXX */
2278 #if Off_t_size > IVSIZE
2283 /* Checking for length < 0 is problematic as the type might or
2284 * might not be signed: if it is not, clever compilers will moan. */
2285 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
2288 SV * const sv = POPs;
2293 if (PL_op->op_flags & OPf_SPECIAL
2294 ? (tmpgv = gv_fetchsv(sv, 0, SVt_PVIO), 1)
2295 : !!(tmpgv = MAYBE_DEREF_GV(sv)) ) {
2302 TAINT_PROPER("truncate");
2303 if (!(fp = IoIFP(io))) {
2307 int fd = PerlIO_fileno(fp);
2309 SETERRNO(EBADF,RMS_IFI);
2313 SETERRNO(EINVAL, LIB_INVARG);
2318 if (ftruncate(fd, len) < 0)
2320 if (my_chsize(fd, len) < 0)
2328 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2329 io = MUTABLE_IO(SvRV(sv)); /* *main::FRED{IO} for example */
2330 goto do_ftruncate_io;
2333 const char * const name = SvPV_nomg_const_nolen(sv);
2334 TAINT_PROPER("truncate");
2336 if (truncate(name, len) < 0)
2343 #if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE)
2344 mode |= O_LARGEFILE; /* Transparently largefiley. */
2347 /* On open(), the Win32 CRT tries to seek around text
2348 * files using 32-bit offsets, which causes the open()
2349 * to fail on large files, so open in binary mode.
2353 tmpfd = PerlLIO_open(name, mode);
2358 if (my_chsize(tmpfd, len) < 0)
2360 PerlLIO_close(tmpfd);
2369 SETERRNO(EBADF,RMS_IFI);
2375 /* also used for: pp_fcntl() */
2380 SV * const argsv = POPs;
2381 const unsigned int func = POPu;
2383 GV * const gv = MUTABLE_GV(POPs);
2384 IO * const io = GvIOn(gv);
2390 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
2394 if (SvPOK(argsv) || !SvNIOK(argsv)) {
2397 s = SvPV_force(argsv, len);
2398 need = IOCPARM_LEN(func);
2400 s = Sv_Grow(argsv, need + 1);
2401 SvCUR_set(argsv, need);
2404 s[SvCUR(argsv)] = 17; /* a little sanity check here */
2407 retval = SvIV(argsv);
2408 s = INT2PTR(char*,retval); /* ouch */
2411 optype = PL_op->op_type;
2412 TAINT_PROPER(PL_op_desc[optype]);
2414 if (optype == OP_IOCTL)
2416 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
2418 DIE(aTHX_ "ioctl is not implemented");
2422 DIE(aTHX_ "fcntl is not implemented");
2424 #if defined(OS2) && defined(__EMX__)
2425 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
2427 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
2431 #if defined(HAS_IOCTL) || defined(HAS_FCNTL)
2433 if (s[SvCUR(argsv)] != 17)
2434 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
2436 s[SvCUR(argsv)] = 0; /* put our null back */
2437 SvSETMAGIC(argsv); /* Assume it has changed */
2446 PUSHp(zero_but_true, ZBTLEN);
2457 const int argtype = POPi;
2458 GV * const gv = MUTABLE_GV(POPs);
2459 IO *const io = GvIO(gv);
2460 PerlIO *const fp = io ? IoIFP(io) : NULL;
2462 /* XXX Looks to me like io is always NULL at this point */
2464 (void)PerlIO_flush(fp);
2465 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
2470 SETERRNO(EBADF,RMS_IFI);
2475 DIE(aTHX_ PL_no_func, "flock");
2486 const int protocol = POPi;
2487 const int type = POPi;
2488 const int domain = POPi;
2489 GV * const gv = MUTABLE_GV(POPs);
2490 IO * const io = GvIOn(gv);
2494 do_close(gv, FALSE);
2496 TAINT_PROPER("socket");
2497 fd = PerlSock_socket(domain, type, protocol);
2499 SETERRNO(EBADF,RMS_IFI);
2502 IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2503 IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
2504 IoTYPE(io) = IoTYPE_SOCKET;
2505 if (!IoIFP(io) || !IoOFP(io)) {
2506 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2507 if (IoOFP(io)) PerlIO_close(IoOFP(io));
2508 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
2511 #if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
2512 /* ensure close-on-exec */
2513 if (fd > PL_maxsysfd && fcntl(fd, F_SETFD, FD_CLOEXEC) < 0)
2523 #if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
2526 const int protocol = POPi;
2527 const int type = POPi;
2528 const int domain = POPi;
2530 GV * const gv2 = MUTABLE_GV(POPs);
2531 IO * const io2 = GvIOn(gv2);
2532 GV * const gv1 = MUTABLE_GV(POPs);
2533 IO * const io1 = GvIOn(gv1);
2536 do_close(gv1, FALSE);
2538 do_close(gv2, FALSE);
2540 TAINT_PROPER("socketpair");
2541 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
2543 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2544 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
2545 IoTYPE(io1) = IoTYPE_SOCKET;
2546 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2547 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
2548 IoTYPE(io2) = IoTYPE_SOCKET;
2549 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
2550 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2551 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
2552 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
2553 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2554 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
2555 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
2558 #if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
2559 /* ensure close-on-exec */
2560 if ((fd[0] > PL_maxsysfd && fcntl(fd[0], F_SETFD, FD_CLOEXEC) < 0) ||
2561 (fd[1] > PL_maxsysfd && fcntl(fd[1], F_SETFD, FD_CLOEXEC) < 0))
2567 DIE(aTHX_ PL_no_sock_func, "socketpair");
2573 /* also used for: pp_connect() */
2578 SV * const addrsv = POPs;
2579 /* OK, so on what platform does bind modify addr? */
2581 GV * const gv = MUTABLE_GV(POPs);
2582 IO * const io = GvIOn(gv);
2589 fd = PerlIO_fileno(IoIFP(io));
2593 addr = SvPV_const(addrsv, len);
2594 op_type = PL_op->op_type;
2595 TAINT_PROPER(PL_op_desc[op_type]);
2596 if ((op_type == OP_BIND
2597 ? PerlSock_bind(fd, (struct sockaddr *)addr, len)
2598 : PerlSock_connect(fd, (struct sockaddr *)addr, len))
2606 SETERRNO(EBADF,SS_IVCHAN);
2613 const int backlog = POPi;
2614 GV * const gv = MUTABLE_GV(POPs);
2615 IO * const io = GvIOn(gv);
2620 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
2627 SETERRNO(EBADF,SS_IVCHAN);
2635 char namebuf[MAXPATHLEN];
2636 #if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
2637 Sock_size_t len = sizeof (struct sockaddr_in);
2639 Sock_size_t len = sizeof namebuf;
2641 GV * const ggv = MUTABLE_GV(POPs);
2642 GV * const ngv = MUTABLE_GV(POPs);
2645 IO * const gstio = GvIO(ggv);
2646 if (!gstio || !IoIFP(gstio))
2650 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
2653 /* Some platforms indicate zero length when an AF_UNIX client is
2654 * not bound. Simulate a non-zero-length sockaddr structure in
2656 namebuf[0] = 0; /* sun_len */
2657 namebuf[1] = AF_UNIX; /* sun_family */
2665 do_close(ngv, FALSE);
2666 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2667 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
2668 IoTYPE(nstio) = IoTYPE_SOCKET;
2669 if (!IoIFP(nstio) || !IoOFP(nstio)) {
2670 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2671 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
2672 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
2675 #if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
2676 /* ensure close-on-exec */
2677 if (fd > PL_maxsysfd && fcntl(fd, F_SETFD, FD_CLOEXEC) < 0)
2681 #ifdef __SCO_VERSION__
2682 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
2685 PUSHp(namebuf, len);
2689 report_evil_fh(ggv);
2690 SETERRNO(EBADF,SS_IVCHAN);
2700 const int how = POPi;
2701 GV * const gv = MUTABLE_GV(POPs);
2702 IO * const io = GvIOn(gv);
2707 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
2712 SETERRNO(EBADF,SS_IVCHAN);
2717 /* also used for: pp_gsockopt() */
2722 const int optype = PL_op->op_type;
2723 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
2724 const unsigned int optname = (unsigned int) POPi;
2725 const unsigned int lvl = (unsigned int) POPi;
2726 GV * const gv = MUTABLE_GV(POPs);
2727 IO * const io = GvIOn(gv);
2734 fd = PerlIO_fileno(IoIFP(io));
2740 (void)SvPOK_only(sv);
2744 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
2747 /* XXX Configure test: does getsockopt set the length properly? */
2756 #if defined(__SYMBIAN32__)
2757 # define SETSOCKOPT_OPTION_VALUE_T void *
2759 # define SETSOCKOPT_OPTION_VALUE_T const char *
2761 /* XXX TODO: We need to have a proper type (a Configure probe,
2762 * etc.) for what the C headers think of the third argument of
2763 * setsockopt(), the option_value read-only buffer: is it
2764 * a "char *", or a "void *", const or not. Some compilers
2765 * don't take kindly to e.g. assuming that "char *" implicitly
2766 * promotes to a "void *", or to explicitly promoting/demoting
2767 * consts to non/vice versa. The "const void *" is the SUS
2768 * definition, but that does not fly everywhere for the above
2770 SETSOCKOPT_OPTION_VALUE_T buf;
2774 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2778 aint = (int)SvIV(sv);
2779 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
2782 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
2792 SETERRNO(EBADF,SS_IVCHAN);
2799 /* also used for: pp_getsockname() */
2804 const int optype = PL_op->op_type;
2805 GV * const gv = MUTABLE_GV(POPs);
2806 IO * const io = GvIOn(gv);
2814 sv = sv_2mortal(newSV(257));
2815 (void)SvPOK_only(sv);
2819 fd = PerlIO_fileno(IoIFP(io));
2823 case OP_GETSOCKNAME:
2824 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2827 case OP_GETPEERNAME:
2828 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2830 #if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2832 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";
2833 /* If the call succeeded, make sure we don't have a zeroed port/addr */
2834 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2835 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
2836 sizeof(u_short) + sizeof(struct in_addr))) {
2843 #ifdef BOGUS_GETNAME_RETURN
2844 /* Interactive Unix, getpeername() and getsockname()
2845 does not return valid namelen */
2846 if (len == BOGUS_GETNAME_RETURN)
2847 len = sizeof(struct sockaddr);
2856 SETERRNO(EBADF,SS_IVCHAN);
2865 /* also used for: pp_lstat() */
2876 if (PL_op->op_flags & OPf_REF ? (gv = cGVOP_gv, 1)
2877 : !!(sv=POPs, gv = MAYBE_DEREF_GV(sv))) {
2878 if (PL_op->op_type == OP_LSTAT) {
2879 if (gv != PL_defgv) {
2880 do_fstat_warning_check:
2881 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
2882 "lstat() on filehandle%s%"SVf,
2885 ? sv_2mortal(newSVhek(GvENAME_HEK(gv)))
2887 } else if (PL_laststype != OP_LSTAT)
2888 /* diag_listed_as: The stat preceding %s wasn't an lstat */
2889 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
2892 if (gv != PL_defgv) {
2896 PL_laststype = OP_STAT;
2897 PL_statgv = gv ? gv : (GV *)io;
2898 sv_setpvs(PL_statname, "");
2904 int fd = PerlIO_fileno(IoIFP(io));
2906 PL_laststatval = -1;
2907 SETERRNO(EBADF,RMS_IFI);
2909 PL_laststatval = PerlLIO_fstat(fd, &PL_statcache);
2912 } else if (IoDIRP(io)) {
2914 PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache);
2917 PL_laststatval = -1;
2920 else PL_laststatval = -1;
2921 if (PL_laststatval < 0 && !havefp) report_evil_fh(gv);
2924 if (PL_laststatval < 0) {
2930 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2931 io = MUTABLE_IO(SvRV(sv));
2932 if (PL_op->op_type == OP_LSTAT)
2933 goto do_fstat_warning_check;
2934 goto do_fstat_have_io;
2937 SvTAINTED_off(PL_statname); /* previous tainting irrelevant */
2938 sv_setpv(PL_statname, SvPV_nomg_const_nolen(sv));
2940 PL_laststype = PL_op->op_type;
2941 file = SvPV_nolen_const(PL_statname);
2942 if (PL_op->op_type == OP_LSTAT)
2943 PL_laststatval = PerlLIO_lstat(file, &PL_statcache);
2945 PL_laststatval = PerlLIO_stat(file, &PL_statcache);
2946 if (PL_laststatval < 0) {
2947 if (ckWARN(WARN_NEWLINE) && should_warn_nl(file)) {
2948 /* PL_warn_nl is constant */
2949 GCC_DIAG_IGNORE(-Wformat-nonliteral);
2950 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
2958 if (gimme != G_ARRAY) {
2959 if (gimme != G_VOID)
2960 XPUSHs(boolSV(max));
2966 mPUSHi(PL_statcache.st_dev);
2967 #if ST_INO_SIZE > IVSIZE
2968 mPUSHn(PL_statcache.st_ino);
2970 # if ST_INO_SIGN <= 0
2971 mPUSHi(PL_statcache.st_ino);
2973 mPUSHu(PL_statcache.st_ino);
2976 mPUSHu(PL_statcache.st_mode);
2977 mPUSHu(PL_statcache.st_nlink);
2979 sv_setuid(PUSHmortal, PL_statcache.st_uid);
2980 sv_setgid(PUSHmortal, PL_statcache.st_gid);
2982 #ifdef USE_STAT_RDEV
2983 mPUSHi(PL_statcache.st_rdev);
2985 PUSHs(newSVpvs_flags("", SVs_TEMP));
2987 #if Off_t_size > IVSIZE
2988 mPUSHn(PL_statcache.st_size);
2990 mPUSHi(PL_statcache.st_size);
2993 mPUSHn(PL_statcache.st_atime);
2994 mPUSHn(PL_statcache.st_mtime);
2995 mPUSHn(PL_statcache.st_ctime);
2997 mPUSHi(PL_statcache.st_atime);
2998 mPUSHi(PL_statcache.st_mtime);
2999 mPUSHi(PL_statcache.st_ctime);
3001 #ifdef USE_STAT_BLOCKS
3002 mPUSHu(PL_statcache.st_blksize);
3003 mPUSHu(PL_statcache.st_blocks);
3005 PUSHs(newSVpvs_flags("", SVs_TEMP));
3006 PUSHs(newSVpvs_flags("", SVs_TEMP));
3012 /* All filetest ops avoid manipulating the perl stack pointer in their main
3013 bodies (since commit d2c4d2d1e22d3125), and return using either
3014 S_ft_return_false() or S_ft_return_true(). These two helper functions are
3015 the only two which manipulate the perl stack. To ensure that no stack
3016 manipulation macros are used, the filetest ops avoid defining a local copy
3017 of the stack pointer with dSP. */
3019 /* If the next filetest is stacked up with this one
3020 (PL_op->op_private & OPpFT_STACKING), we leave
3021 the original argument on the stack for success,
3022 and skip the stacked operators on failure.
3023 The next few macros/functions take care of this.
3027 S_ft_return_false(pTHX_ SV *ret) {
3031 if (PL_op->op_flags & OPf_REF) XPUSHs(ret);
3035 if (PL_op->op_private & OPpFT_STACKING) {
3036 while (OP_IS_FILETEST(next->op_type)
3037 && next->op_private & OPpFT_STACKED)
3038 next = next->op_next;
3043 PERL_STATIC_INLINE OP *
3044 S_ft_return_true(pTHX_ SV *ret) {
3046 if (PL_op->op_flags & OPf_REF)
3047 XPUSHs(PL_op->op_private & OPpFT_STACKING ? (SV *)cGVOP_gv : (ret));
3048 else if (!(PL_op->op_private & OPpFT_STACKING))
3054 #define FT_RETURNNO return S_ft_return_false(aTHX_ &PL_sv_no)
3055 #define FT_RETURNUNDEF return S_ft_return_false(aTHX_ &PL_sv_undef)
3056 #define FT_RETURNYES return S_ft_return_true(aTHX_ &PL_sv_yes)
3058 #define tryAMAGICftest_MG(chr) STMT_START { \
3059 if ( (SvFLAGS(*PL_stack_sp) & (SVf_ROK|SVs_GMG)) \
3060 && PL_op->op_flags & OPf_KIDS) { \
3061 OP *next = S_try_amagic_ftest(aTHX_ chr); \
3062 if (next) return next; \
3067 S_try_amagic_ftest(pTHX_ char chr) {
3068 SV *const arg = *PL_stack_sp;
3071 if (!(PL_op->op_private & OPpFT_STACKING)) SvGETMAGIC(arg);
3075 const char tmpchr = chr;
3076 SV * const tmpsv = amagic_call(arg,
3077 newSVpvn_flags(&tmpchr, 1, SVs_TEMP),
3078 ftest_amg, AMGf_unary);
3083 return SvTRUE(tmpsv)
3084 ? S_ft_return_true(aTHX_ tmpsv) : S_ft_return_false(aTHX_ tmpsv);
3090 /* also used for: pp_fteexec() pp_fteread() pp_ftewrite() pp_ftrexec()
3096 /* Not const, because things tweak this below. Not bool, because there's
3097 no guarantee that OPpFT_ACCESS is <= CHAR_MAX */
3098 #if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
3099 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
3100 /* Giving some sort of initial value silences compilers. */
3102 int access_mode = R_OK;
3104 int access_mode = 0;
3107 /* access_mode is never used, but leaving use_access in makes the
3108 conditional compiling below much clearer. */
3111 Mode_t stat_mode = S_IRUSR;
3113 bool effective = FALSE;
3116 switch (PL_op->op_type) {
3117 case OP_FTRREAD: opchar = 'R'; break;
3118 case OP_FTRWRITE: opchar = 'W'; break;
3119 case OP_FTREXEC: opchar = 'X'; break;
3120 case OP_FTEREAD: opchar = 'r'; break;
3121 case OP_FTEWRITE: opchar = 'w'; break;
3122 case OP_FTEEXEC: opchar = 'x'; break;
3124 tryAMAGICftest_MG(opchar);
3126 switch (PL_op->op_type) {
3128 #if !(defined(HAS_ACCESS) && defined(R_OK))
3134 #if defined(HAS_ACCESS) && defined(W_OK)
3139 stat_mode = S_IWUSR;
3143 #if defined(HAS_ACCESS) && defined(X_OK)
3148 stat_mode = S_IXUSR;
3152 #ifdef PERL_EFF_ACCESS
3155 stat_mode = S_IWUSR;
3159 #ifndef PERL_EFF_ACCESS
3166 #ifdef PERL_EFF_ACCESS
3171 stat_mode = S_IXUSR;
3177 #if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
3178 const char *name = SvPV_nolen(*PL_stack_sp);
3180 # ifdef PERL_EFF_ACCESS
3181 result = PERL_EFF_ACCESS(name, access_mode);
3183 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
3189 result = access(name, access_mode);
3191 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
3202 result = my_stat_flags(0);
3205 if (cando(stat_mode, effective, &PL_statcache))
3211 /* also used for: pp_ftatime() pp_ftctime() pp_ftmtime() pp_ftsize() */
3216 const int op_type = PL_op->op_type;
3220 case OP_FTIS: opchar = 'e'; break;
3221 case OP_FTSIZE: opchar = 's'; break;
3222 case OP_FTMTIME: opchar = 'M'; break;
3223 case OP_FTCTIME: opchar = 'C'; break;
3224 case OP_FTATIME: opchar = 'A'; break;
3226 tryAMAGICftest_MG(opchar);
3228 result = my_stat_flags(0);
3231 if (op_type == OP_FTIS)
3234 /* You can't dTARGET inside OP_FTIS, because you'll get
3235 "panic: pad_sv po" - the op is not flagged to have a target. */
3239 #if Off_t_size > IVSIZE
3240 sv_setnv(TARG, (NV)PL_statcache.st_size);
3242 sv_setiv(TARG, (IV)PL_statcache.st_size);
3247 ((NV)PL_basetime - PL_statcache.st_mtime) / 86400.0 );
3251 ((NV)PL_basetime - PL_statcache.st_atime) / 86400.0 );
3255 ((NV)PL_basetime - PL_statcache.st_ctime) / 86400.0 );
3259 return SvTRUE_nomg(TARG)
3260 ? S_ft_return_true(aTHX_ TARG) : S_ft_return_false(aTHX_ TARG);
3265 /* also used for: pp_ftblk() pp_ftchr() pp_ftdir() pp_fteowned()
3266 * pp_ftfile() pp_ftpipe() pp_ftsgid() pp_ftsock()
3267 * pp_ftsuid() pp_ftsvtx() pp_ftzero() */
3274 switch (PL_op->op_type) {
3275 case OP_FTROWNED: opchar = 'O'; break;
3276 case OP_FTEOWNED: opchar = 'o'; break;
3277 case OP_FTZERO: opchar = 'z'; break;
3278 case OP_FTSOCK: opchar = 'S'; break;
3279 case OP_FTCHR: opchar = 'c'; break;
3280 case OP_FTBLK: opchar = 'b'; break;
3281 case OP_FTFILE: opchar = 'f'; break;
3282 case OP_FTDIR: opchar = 'd'; break;
3283 case OP_FTPIPE: opchar = 'p'; break;
3284 case OP_FTSUID: opchar = 'u'; break;
3285 case OP_FTSGID: opchar = 'g'; break;
3286 case OP_FTSVTX: opchar = 'k'; break;
3288 tryAMAGICftest_MG(opchar);
3290 /* I believe that all these three are likely to be defined on most every
3291 system these days. */
3293 if(PL_op->op_type == OP_FTSUID) {
3298 if(PL_op->op_type == OP_FTSGID) {
3303 if(PL_op->op_type == OP_FTSVTX) {
3308 result = my_stat_flags(0);
3311 switch (PL_op->op_type) {
3313 if (PL_statcache.st_uid == PerlProc_getuid())
3317 if (PL_statcache.st_uid == PerlProc_geteuid())
3321 if (PL_statcache.st_size == 0)
3325 if (S_ISSOCK(PL_statcache.st_mode))
3329 if (S_ISCHR(PL_statcache.st_mode))
3333 if (S_ISBLK(PL_statcache.st_mode))
3337 if (S_ISREG(PL_statcache.st_mode))
3341 if (S_ISDIR(PL_statcache.st_mode))
3345 if (S_ISFIFO(PL_statcache.st_mode))
3350 if (PL_statcache.st_mode & S_ISUID)
3356 if (PL_statcache.st_mode & S_ISGID)
3362 if (PL_statcache.st_mode & S_ISVTX)
3374 tryAMAGICftest_MG('l');
3375 result = my_lstat_flags(0);
3379 if (S_ISLNK(PL_statcache.st_mode))
3392 tryAMAGICftest_MG('t');
3394 if (PL_op->op_flags & OPf_REF)
3397 SV *tmpsv = *PL_stack_sp;
3398 if (!(gv = MAYBE_DEREF_GV_nomg(tmpsv))) {
3399 name = SvPV_nomg(tmpsv, namelen);
3400 gv = gv_fetchpvn_flags(name, namelen, SvUTF8(tmpsv), SVt_PVIO);
3404 if (GvIO(gv) && IoIFP(GvIOp(gv)))
3405 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
3406 else if (name && isDIGIT(*name) && grok_atoUV(name, &uv, NULL) && uv <= PERL_INT_MAX)
3411 SETERRNO(EBADF,RMS_IFI);
3414 if (PerlLIO_isatty(fd))
3420 /* also used for: pp_ftbinary() */
3434 tryAMAGICftest_MG(PL_op->op_type == OP_FTTEXT ? 'T' : 'B');
3436 if (PL_op->op_flags & OPf_REF)
3438 else if ((PL_op->op_private & (OPpFT_STACKED|OPpFT_AFTER_t))
3443 gv = MAYBE_DEREF_GV_nomg(sv);
3447 if (gv == PL_defgv) {
3449 io = SvTYPE(PL_statgv) == SVt_PVIO
3453 goto really_filename;
3458 sv_setpvs(PL_statname, "");
3459 io = GvIO(PL_statgv);
3461 PL_laststatval = -1;
3462 PL_laststype = OP_STAT;
3463 if (io && IoIFP(io)) {
3465 if (! PerlIO_has_base(IoIFP(io)))
3466 DIE(aTHX_ "-T and -B not implemented on filehandles");
3467 fd = PerlIO_fileno(IoIFP(io));
3469 SETERRNO(EBADF,RMS_IFI);
3472 PL_laststatval = PerlLIO_fstat(fd, &PL_statcache);
3473 if (PL_laststatval < 0)
3475 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
3476 if (PL_op->op_type == OP_FTTEXT)
3481 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
3482 i = PerlIO_getc(IoIFP(io));
3484 (void)PerlIO_ungetc(IoIFP(io),i);
3486 /* null file is anything */
3489 len = PerlIO_get_bufsiz(IoIFP(io));
3490 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
3491 /* sfio can have large buffers - limit to 512 */
3496 SETERRNO(EBADF,RMS_IFI);
3498 SETERRNO(EBADF,RMS_IFI);
3507 sv_setpv(PL_statname, SvPV_nomg_const_nolen(sv));
3509 file = SvPVX_const(PL_statname);
3511 if (!(fp = PerlIO_open(file, "r"))) {
3513 PL_laststatval = -1;
3514 PL_laststype = OP_STAT;
3516 if (ckWARN(WARN_NEWLINE) && should_warn_nl(file)) {
3517 /* PL_warn_nl is constant */
3518 GCC_DIAG_IGNORE(-Wformat-nonliteral);
3519 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
3524 PL_laststype = OP_STAT;
3525 fd = PerlIO_fileno(fp);
3527 (void)PerlIO_close(fp);
3528 SETERRNO(EBADF,RMS_IFI);
3531 PL_laststatval = PerlLIO_fstat(fd, &PL_statcache);
3532 if (PL_laststatval < 0) {
3533 (void)PerlIO_close(fp);
3534 SETERRNO(EBADF,RMS_IFI);
3537 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, NULL);
3538 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3539 (void)PerlIO_close(fp);
3541 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
3542 FT_RETURNNO; /* special case NFS directories */
3543 FT_RETURNYES; /* null file is anything */
3548 /* now scan s to look for textiness */
3550 #if defined(DOSISH) || defined(USEMYBINMODE)
3551 /* ignore trailing ^Z on short files */
3552 if (len && len < (I32)sizeof(tbuf) && tbuf[len-1] == 26)
3557 if (! is_invariant_string((U8 *) s, len)) {
3560 /* Here contains a variant under UTF-8 . See if the entire string is
3561 * UTF-8. But the buffer may end in a partial character, so consider
3562 * it UTF-8 if the first non-UTF8 char is an ending partial */
3563 if (is_utf8_string_loc((U8 *) s, len, &ep)
3564 || ep + UTF8SKIP(ep) > (U8 *) (s + len))
3566 if (PL_op->op_type == OP_FTTEXT) {
3575 /* Here, is not UTF-8 or is entirely ASCII. Look through the buffer for
3576 * things that wouldn't be in ASCII text or rich ASCII text. Count these
3578 for (i = 0; i < len; i++, s++) {
3579 if (!*s) { /* null never allowed in text */
3583 #ifdef USE_LOCALE_CTYPE
3584 if (IN_LC_RUNTIME(LC_CTYPE)) {
3585 if ( isPRINT_LC(*s) || isSPACE_LC(*s)) {
3592 /* VT occurs so rarely in text, that we consider it odd */
3593 || (isSPACE_A(*s) && *s != VT_NATIVE)
3595 /* But there is a fair amount of backspaces and escapes in
3598 || *s == ESC_NATIVE)
3605 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
3616 const char *tmps = NULL;
3620 SV * const sv = POPs;
3621 if (PL_op->op_flags & OPf_SPECIAL) {
3622 gv = gv_fetchsv(sv, 0, SVt_PVIO);
3624 if (ckWARN(WARN_UNOPENED)) {
3625 Perl_warner(aTHX_ packWARN(WARN_UNOPENED),
3626 "chdir() on unopened filehandle %" SVf, sv);
3628 SETERRNO(EBADF,RMS_IFI);
3630 TAINT_PROPER("chdir");
3634 else if (!(gv = MAYBE_DEREF_GV(sv)))
3635 tmps = SvPV_nomg_const_nolen(sv);
3638 HV * const table = GvHVn(PL_envgv);
3641 if ( (svp = hv_fetchs(table, "HOME", FALSE))
3642 || (svp = hv_fetchs(table, "LOGDIR", FALSE))
3644 || (svp = hv_fetchs(table, "SYS$LOGIN", FALSE))
3648 tmps = SvPV_nolen_const(*svp);
3652 SETERRNO(EINVAL, LIB_INVARG);
3653 TAINT_PROPER("chdir");
3658 TAINT_PROPER("chdir");
3661 IO* const io = GvIO(gv);
3664 PUSHi(fchdir(my_dirfd(IoDIRP(io))) >= 0);
3665 } else if (IoIFP(io)) {
3666 int fd = PerlIO_fileno(IoIFP(io));
3670 PUSHi(fchdir(fd) >= 0);
3680 DIE(aTHX_ PL_no_func, "fchdir");
3684 PUSHi( PerlDir_chdir(tmps) >= 0 );
3686 /* Clear the DEFAULT element of ENV so we'll get the new value
3688 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
3695 SETERRNO(EBADF,RMS_IFI);
3702 /* also used for: pp_chmod() pp_kill() pp_unlink() pp_utime() */
3706 dSP; dMARK; dTARGET;
3707 const I32 value = (I32)apply(PL_op->op_type, MARK, SP);
3718 char * const tmps = POPpx;
3719 TAINT_PROPER("chroot");
3720 PUSHi( chroot(tmps) >= 0 );
3723 DIE(aTHX_ PL_no_func, "chroot");
3734 const char * const tmps2 = POPpconstx;
3735 const char * const tmps = SvPV_nolen_const(TOPs);
3736 TAINT_PROPER("rename");
3738 anum = PerlLIO_rename(tmps, tmps2);
3740 if (!(anum = PerlLIO_stat(tmps, &statbuf))) {
3741 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3744 if (PerlProc_geteuid() || PerlLIO_stat(tmps2, &statbuf) < 0 || !S_ISDIR(statbuf.st_mode))
3745 (void)UNLINK(tmps2);
3746 if (!(anum = link(tmps, tmps2)))
3747 anum = UNLINK(tmps);
3756 /* also used for: pp_symlink() */
3758 #if defined(HAS_LINK) || defined(HAS_SYMLINK)
3762 const int op_type = PL_op->op_type;
3766 if (op_type == OP_LINK)
3767 DIE(aTHX_ PL_no_func, "link");
3769 # ifndef HAS_SYMLINK
3770 if (op_type == OP_SYMLINK)
3771 DIE(aTHX_ PL_no_func, "symlink");
3775 const char * const tmps2 = POPpconstx;
3776 const char * const tmps = SvPV_nolen_const(TOPs);
3777 TAINT_PROPER(PL_op_desc[op_type]);
3779 # if defined(HAS_LINK)
3780 # if defined(HAS_SYMLINK)
3781 /* Both present - need to choose which. */
3782 (op_type == OP_LINK) ?
3783 PerlLIO_link(tmps, tmps2) : symlink(tmps, tmps2);
3785 /* Only have link, so calls to pp_symlink will have DIE()d above. */
3786 PerlLIO_link(tmps, tmps2);
3789 # if defined(HAS_SYMLINK)
3790 /* Only have symlink, so calls to pp_link will have DIE()d above. */
3791 symlink(tmps, tmps2);
3796 SETi( result >= 0 );
3801 /* also used for: pp_symlink() */
3806 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
3816 char buf[MAXPATHLEN];
3821 /* NOTE: if the length returned by readlink() is sizeof(buf) - 1,
3822 * it is impossible to know whether the result was truncated. */
3823 len = readlink(tmps, buf, sizeof(buf) - 1);
3832 RETSETUNDEF; /* just pretend it's a normal file */
3836 #if !defined(HAS_MKDIR) || !defined(HAS_RMDIR)
3838 S_dooneliner(pTHX_ const char *cmd, const char *filename)
3840 char * const save_filename = filename;
3845 Size_t size = strlen(cmd) + (strlen(filename) * 2) + 10;
3847 PERL_ARGS_ASSERT_DOONELINER;
3849 Newx(cmdline, size, char);
3850 my_strlcpy(cmdline, cmd, size);
3851 my_strlcat(cmdline, " ", size);
3852 for (s = cmdline + strlen(cmdline); *filename; ) {
3856 if (s - cmdline < size)
3857 my_strlcpy(s, " 2>&1", size - (s - cmdline));
3858 myfp = PerlProc_popen(cmdline, "r");
3862 SV * const tmpsv = sv_newmortal();
3863 /* Need to save/restore 'PL_rs' ?? */
3864 s = sv_gets(tmpsv, myfp, 0);
3865 (void)PerlProc_pclose(myfp);
3869 #ifdef HAS_SYS_ERRLIST
3874 /* you don't see this */
3875 const char * const errmsg = Strerror(e) ;
3878 if (instr(s, errmsg)) {
3885 #define EACCES EPERM
3887 if (instr(s, "cannot make"))
3888 SETERRNO(EEXIST,RMS_FEX);
3889 else if (instr(s, "existing file"))
3890 SETERRNO(EEXIST,RMS_FEX);
3891 else if (instr(s, "ile exists"))
3892 SETERRNO(EEXIST,RMS_FEX);
3893 else if (instr(s, "non-exist"))
3894 SETERRNO(ENOENT,RMS_FNF);
3895 else if (instr(s, "does not exist"))
3896 SETERRNO(ENOENT,RMS_FNF);
3897 else if (instr(s, "not empty"))
3898 SETERRNO(EBUSY,SS_DEVOFFLINE);
3899 else if (instr(s, "cannot access"))
3900 SETERRNO(EACCES,RMS_PRV);
3902 SETERRNO(EPERM,RMS_PRV);
3905 else { /* some mkdirs return no failure indication */
3907 anum = (PerlLIO_stat(save_filename, &statbuf) >= 0);
3908 if (PL_op->op_type == OP_RMDIR)
3913 SETERRNO(EACCES,RMS_PRV); /* a guess */
3922 /* This macro removes trailing slashes from a directory name.
3923 * Different operating and file systems take differently to
3924 * trailing slashes. According to POSIX 1003.1 1996 Edition
3925 * any number of trailing slashes should be allowed.
3926 * Thusly we snip them away so that even non-conforming
3927 * systems are happy.
3928 * We should probably do this "filtering" for all
3929 * the functions that expect (potentially) directory names:
3930 * -d, chdir(), chmod(), chown(), chroot(), fcntl()?,
3931 * (mkdir()), opendir(), rename(), rmdir(), stat(). --jhi */
3933 #define TRIMSLASHES(tmps,len,copy) (tmps) = SvPV_const(TOPs, (len)); \
3934 if ((len) > 1 && (tmps)[(len)-1] == '/') { \
3937 } while ((len) > 1 && (tmps)[(len)-1] == '/'); \
3938 (tmps) = savepvn((tmps), (len)); \
3948 const unsigned int mode = (MAXARG > 1 && (TOPs||((void)POPs,0))) ? POPu : 0777;
3950 TRIMSLASHES(tmps,len,copy);
3952 TAINT_PROPER("mkdir");
3954 SETi( PerlDir_mkdir(tmps, mode) >= 0 );
3958 SETi( dooneliner("mkdir", tmps) );
3959 oldumask = PerlLIO_umask(0);
3960 PerlLIO_umask(oldumask);
3961 PerlLIO_chmod(tmps, (mode & ~oldumask) & 0777);
3976 TRIMSLASHES(tmps,len,copy);
3977 TAINT_PROPER("rmdir");
3979 SETi( PerlDir_rmdir(tmps) >= 0 );
3981 SETi( dooneliner("rmdir", tmps) );
3988 /* Directory calls. */
3992 #if defined(Direntry_t) && defined(HAS_READDIR)
3994 const char * const dirname = POPpconstx;
3995 GV * const gv = MUTABLE_GV(POPs);
3996 IO * const io = GvIOn(gv);
3998 if ((IoIFP(io) || IoOFP(io)))
3999 Perl_ck_warner_d(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
4000 "Opening filehandle %"HEKf" also as a directory",
4001 HEKfARG(GvENAME_HEK(gv)) );
4003 PerlDir_close(IoDIRP(io));
4004 if (!(IoDIRP(io) = PerlDir_open(dirname)))
4010 SETERRNO(EBADF,RMS_DIR);
4013 DIE(aTHX_ PL_no_dir_func, "opendir");
4019 #if !defined(Direntry_t) || !defined(HAS_READDIR)
4020 DIE(aTHX_ PL_no_dir_func, "readdir");
4022 #if !defined(I_DIRENT) && !defined(VMS)
4023 Direntry_t *readdir (DIR *);
4028 const I32 gimme = GIMME_V;
4029 GV * const gv = MUTABLE_GV(POPs);
4030 const Direntry_t *dp;
4031 IO * const io = GvIOn(gv);
4034 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
4035 "readdir() attempted on invalid dirhandle %"HEKf,
4036 HEKfARG(GvENAME_HEK(gv)));
4041 dp = (Direntry_t *)PerlDir_read(IoDIRP(io));
4045 sv = newSVpvn(dp->d_name, dp->d_namlen);
4047 sv = newSVpv(dp->d_name, 0);
4049 if (!(IoFLAGS(io) & IOf_UNTAINT))
4052 } while (gimme == G_ARRAY);
4054 if (!dp && gimme != G_ARRAY)
4061 SETERRNO(EBADF,RMS_ISI);
4062 if (gimme == G_ARRAY)
4071 #if defined(HAS_TELLDIR) || defined(telldir)
4073 /* XXX does _anyone_ need this? --AD 2/20/1998 */
4074 /* XXX netbsd still seemed to.
4075 XXX HAS_TELLDIR_PROTO is new style, NEED_TELLDIR_PROTO is old style.
4076 --JHI 1999-Feb-02 */
4077 # if !defined(HAS_TELLDIR_PROTO) || defined(NEED_TELLDIR_PROTO)
4078 long telldir (DIR *);
4080 GV * const gv = MUTABLE_GV(POPs);
4081 IO * const io = GvIOn(gv);
4084 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
4085 "telldir() attempted on invalid dirhandle %"HEKf,
4086 HEKfARG(GvENAME_HEK(gv)));
4090 PUSHi( PerlDir_tell(IoDIRP(io)) );
4094 SETERRNO(EBADF,RMS_ISI);
4097 DIE(aTHX_ PL_no_dir_func, "telldir");
4103 #if defined(HAS_SEEKDIR) || defined(seekdir)
4105 const long along = POPl;
4106 GV * const gv = MUTABLE_GV(POPs);
4107 IO * const io = GvIOn(gv);
4110 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
4111 "seekdir() attempted on invalid dirhandle %"HEKf,
4112 HEKfARG(GvENAME_HEK(gv)));
4115 (void)PerlDir_seek(IoDIRP(io), along);
4120 SETERRNO(EBADF,RMS_ISI);
4123 DIE(aTHX_ PL_no_dir_func, "seekdir");
4129 #if defined(HAS_REWINDDIR) || defined(rewinddir)
4131 GV * const gv = MUTABLE_GV(POPs);
4132 IO * const io = GvIOn(gv);
4135 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
4136 "rewinddir() attempted on invalid dirhandle %"HEKf,
4137 HEKfARG(GvENAME_HEK(gv)));
4140 (void)PerlDir_rewind(IoDIRP(io));
4144 SETERRNO(EBADF,RMS_ISI);
4147 DIE(aTHX_ PL_no_dir_func, "rewinddir");
4153 #if defined(Direntry_t) && defined(HAS_READDIR)
4155 GV * const gv = MUTABLE_GV(POPs);
4156 IO * const io = GvIOn(gv);
4159 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
4160 "closedir() attempted on invalid dirhandle %"HEKf,
4161 HEKfARG(GvENAME_HEK(gv)));
4164 #ifdef VOID_CLOSEDIR
4165 PerlDir_close(IoDIRP(io));
4167 if (PerlDir_close(IoDIRP(io)) < 0) {
4168 IoDIRP(io) = 0; /* Don't try to close again--coredumps on SysV */
4177 SETERRNO(EBADF,RMS_IFI);
4180 DIE(aTHX_ PL_no_dir_func, "closedir");
4184 /* Process control. */
4191 #ifdef HAS_SIGPROCMASK
4192 sigset_t oldmask, newmask;
4196 PERL_FLUSHALL_FOR_CHILD;
4197 #ifdef HAS_SIGPROCMASK
4198 sigfillset(&newmask);
4199 sigprocmask(SIG_SETMASK, &newmask, &oldmask);
4201 childpid = PerlProc_fork();
4202 if (childpid == 0) {
4206 for (sig = 1; sig < SIG_SIZE; sig++)
4207 PL_psig_pend[sig] = 0;
4209 #ifdef HAS_SIGPROCMASK
4212 sigprocmask(SIG_SETMASK, &oldmask, NULL);
4219 #ifdef PERL_USES_PL_PIDSTATUS
4220 hv_clear(PL_pidstatus); /* no kids, so don't wait for 'em */
4226 # if (defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)) || defined(__amigaos4__)
4231 PERL_FLUSHALL_FOR_CHILD;
4232 childpid = PerlProc_fork();
4238 DIE(aTHX_ PL_no_func, "fork");
4245 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(__LIBCATAMOUNT__)
4250 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
4251 childpid = wait4pid(-1, &argflags, 0);
4253 while ((childpid = wait4pid(-1, &argflags, 0)) == -1 &&
4258 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4259 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
4260 STATUS_NATIVE_CHILD_SET((childpid && childpid != -1) ? argflags : -1);
4262 STATUS_NATIVE_CHILD_SET((childpid > 0) ? argflags : -1);
4267 DIE(aTHX_ PL_no_func, "wait");
4273 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(__LIBCATAMOUNT__)
4275 const int optype = POPi;
4276 const Pid_t pid = TOPi;
4280 result = amigaos_waitpid(aTHX_ optype, pid, &argflags);
4281 STATUS_NATIVE_CHILD_SET((result >= 0) ? argflags : -1);
4282 result = result == 0 ? pid : -1;
4286 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
4287 result = wait4pid(pid, &argflags, optype);
4289 while ((result = wait4pid(pid, &argflags, optype)) == -1 &&
4294 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4295 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
4296 STATUS_NATIVE_CHILD_SET((result && result != -1) ? argflags : -1);
4298 STATUS_NATIVE_CHILD_SET((result > 0) ? argflags : -1);
4300 # endif /* __amigaos4__ */
4304 DIE(aTHX_ PL_no_func, "waitpid");
4310 dSP; dMARK; dORIGMARK; dTARGET;
4311 #if defined(__LIBCATAMOUNT__)
4312 PL_statusvalue = -1;
4317 # ifdef __amigaos4__
4325 while (++MARK <= SP) {
4326 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
4331 TAINT_PROPER("system");
4333 PERL_FLUSHALL_FOR_CHILD;
4334 #if (defined(HAS_FORK) || defined(__amigaos4__)) && !defined(VMS) && !defined(OS2) || defined(PERL_MICRO)
4337 struct UserData userdata;
4344 bool child_success = FALSE;
4345 #ifdef HAS_SIGPROCMASK
4346 sigset_t newset, oldset;
4349 if (PerlProc_pipe(pp) >= 0)
4352 amigaos_fork_set_userdata(aTHX_
4358 pthread_create(&proc,NULL,amigaos_system_child,(void *)&userdata);
4359 child_success = proc > 0;
4361 #ifdef HAS_SIGPROCMASK
4362 sigemptyset(&newset);
4363 sigaddset(&newset, SIGCHLD);
4364 sigprocmask(SIG_BLOCK, &newset, &oldset);
4366 while ((childpid = PerlProc_fork()) == -1) {
4367 if (errno != EAGAIN) {
4372 PerlLIO_close(pp[0]);
4373 PerlLIO_close(pp[1]);
4375 #ifdef HAS_SIGPROCMASK
4376 sigprocmask(SIG_SETMASK, &oldset, NULL);
4382 child_success = childpid > 0;
4384 if (child_success) {
4385 Sigsave_t ihand,qhand; /* place to save signals during system() */
4388 #ifndef __amigaos4__
4390 PerlLIO_close(pp[1]);
4393 rsignal_save(SIGINT, (Sighandler_t) SIG_IGN, &ihand);
4394 rsignal_save(SIGQUIT, (Sighandler_t) SIG_IGN, &qhand);
4397 result = pthread_join(proc, (void **)&status);
4400 result = wait4pid(childpid, &status, 0);
4401 } while (result == -1 && errno == EINTR);
4404 #ifdef HAS_SIGPROCMASK
4405 sigprocmask(SIG_SETMASK, &oldset, NULL);
4407 (void)rsignal_restore(SIGINT, &ihand);
4408 (void)rsignal_restore(SIGQUIT, &qhand);
4410 STATUS_NATIVE_CHILD_SET(result == -1 ? -1 : status);
4411 do_execfree(); /* free any memory child malloced on fork */
4418 while (n < sizeof(int)) {
4419 n1 = PerlLIO_read(pp[0],
4420 (void*)(((char*)&errkid)+n),
4426 PerlLIO_close(pp[0]);
4427 if (n) { /* Error */
4428 if (n != sizeof(int))
4429 DIE(aTHX_ "panic: kid popen errno read, n=%u", n);
4430 errno = errkid; /* Propagate errno from kid */
4432 /* The pipe always has something in it
4433 * so n alone is not enough. */
4437 STATUS_NATIVE_CHILD_SET(-1);
4441 XPUSHi(STATUS_CURRENT);
4444 #ifndef __amigaos4__
4445 #ifdef HAS_SIGPROCMASK
4446 sigprocmask(SIG_SETMASK, &oldset, NULL);
4449 PerlLIO_close(pp[0]);
4450 #if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
4451 if (fcntl(pp[1], F_SETFD, FD_CLOEXEC) < 0)
4455 if (PL_op->op_flags & OPf_STACKED) {
4456 SV * const really = *++MARK;
4457 value = (I32)do_aexec5(really, MARK, SP, pp[1], did_pipes);
4459 else if (SP - MARK != 1)
4460 value = (I32)do_aexec5(NULL, MARK, SP, pp[1], did_pipes);
4462 value = (I32)do_exec3(SvPVx_nolen(sv_mortalcopy(*SP)), pp[1], did_pipes);
4464 #endif /* __amigaos4__ */
4467 #else /* ! FORK or VMS or OS/2 */
4470 if (PL_op->op_flags & OPf_STACKED) {
4471 SV * const really = *++MARK;
4472 # if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__) || defined(__VMS)
4473 value = (I32)do_aspawn(really, MARK, SP);
4475 value = (I32)do_aspawn(really, (void **)MARK, (void **)SP);
4478 else if (SP - MARK != 1) {
4479 # if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__) || defined(__VMS)
4480 value = (I32)do_aspawn(NULL, MARK, SP);
4482 value = (I32)do_aspawn(NULL, (void **)MARK, (void **)SP);
4486 value = (I32)do_spawn(SvPVx_nolen(sv_mortalcopy(*SP)));
4488 if (PL_statusvalue == -1) /* hint that value must be returned as is */
4490 STATUS_NATIVE_CHILD_SET(value);
4493 XPUSHi(result ? value : STATUS_CURRENT);
4494 #endif /* !FORK or VMS or OS/2 */
4501 dSP; dMARK; dORIGMARK; dTARGET;
4506 while (++MARK <= SP) {
4507 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
4512 TAINT_PROPER("exec");
4515 PERL_FLUSHALL_FOR_CHILD;
4516 if (PL_op->op_flags & OPf_STACKED) {
4517 SV * const really = *++MARK;
4518 value = (I32)do_aexec(really, MARK, SP);
4520 else if (SP - MARK != 1)
4522 value = (I32)vms_do_aexec(NULL, MARK, SP);
4524 value = (I32)do_aexec(NULL, MARK, SP);
4528 value = (I32)vms_do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
4530 value = (I32)do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
4542 XPUSHi( getppid() );
4545 DIE(aTHX_ PL_no_func, "getppid");
4555 (MAXARG < 1) ? 0 : TOPs ? SvIVx(POPs) : ((void)POPs, 0);
4558 pgrp = (I32)BSD_GETPGRP(pid);
4560 if (pid != 0 && pid != PerlProc_getpid())
4561 DIE(aTHX_ "POSIX getpgrp can't take an argument");
4567 DIE(aTHX_ PL_no_func, "getpgrp");
4577 pgrp = MAXARG == 2 && (TOPs||POPs) ? POPi : 0;
4578 if (MAXARG > 0) pid = TOPs ? TOPi : 0;
4585 TAINT_PROPER("setpgrp");
4587 SETi( BSD_SETPGRP(pid, pgrp) >= 0 );
4589 if ((pgrp != 0 && pgrp != PerlProc_getpid())
4590 || (pid != 0 && pid != PerlProc_getpid()))
4592 DIE(aTHX_ "setpgrp can't take arguments");
4594 SETi( setpgrp() >= 0 );
4595 #endif /* USE_BSDPGRP */
4598 DIE(aTHX_ PL_no_func, "setpgrp");
4602 #if defined(__GLIBC__) && ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3) || (__GLIBC__ > 2))
4603 # define PRIORITY_WHICH_T(which) (__priority_which_t)which
4605 # define PRIORITY_WHICH_T(which) which
4610 #ifdef HAS_GETPRIORITY
4612 const int who = POPi;
4613 const int which = TOPi;
4614 SETi( getpriority(PRIORITY_WHICH_T(which), who) );
4617 DIE(aTHX_ PL_no_func, "getpriority");
4623 #ifdef HAS_SETPRIORITY
4625 const int niceval = POPi;
4626 const int who = POPi;
4627 const int which = TOPi;
4628 TAINT_PROPER("setpriority");
4629 SETi( setpriority(PRIORITY_WHICH_T(which), who, niceval) >= 0 );
4632 DIE(aTHX_ PL_no_func, "setpriority");
4636 #undef PRIORITY_WHICH_T
4644 XPUSHn( time(NULL) );
4646 XPUSHi( time(NULL) );
4655 struct tms timesbuf;
4658 (void)PerlProc_times(×buf);
4660 mPUSHn(((NV)timesbuf.tms_utime)/(NV)PL_clocktick);
4661 if (GIMME_V == G_ARRAY) {
4662 mPUSHn(((NV)timesbuf.tms_stime)/(NV)PL_clocktick);
4663 mPUSHn(((NV)timesbuf.tms_cutime)/(NV)PL_clocktick);
4664 mPUSHn(((NV)timesbuf.tms_cstime)/(NV)PL_clocktick);
4672 if (GIMME_V == G_ARRAY) {
4679 DIE(aTHX_ "times not implemented");
4681 #endif /* HAS_TIMES */
4684 /* The 32 bit int year limits the times we can represent to these
4685 boundaries with a few days wiggle room to account for time zone
4688 /* Sat Jan 3 00:00:00 -2147481748 */
4689 #define TIME_LOWER_BOUND -67768100567755200.0
4690 /* Sun Dec 29 12:00:00 2147483647 */
4691 #define TIME_UPPER_BOUND 67767976233316800.0
4694 /* also used for: pp_localtime() */
4702 const char *opname = PL_op->op_type == OP_LOCALTIME ? "localtime" : "gmtime";
4703 static const char * const dayname[] =
4704 {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
4705 static const char * const monname[] =
4706 {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
4707 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
4709 if (MAXARG < 1 || (!TOPs && ((void)POPs, 1))) {
4712 when = (Time64_T)now;
4715 NV input = Perl_floor(POPn);
4716 const bool pl_isnan = Perl_isnan(input);
4717 when = (Time64_T)input;
4718 if (UNLIKELY(pl_isnan || when != input)) {
4719 /* diag_listed_as: gmtime(%f) too large */
4720 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4721 "%s(%.0" NVff ") too large", opname, input);
4729 if ( TIME_LOWER_BOUND > when ) {
4730 /* diag_listed_as: gmtime(%f) too small */
4731 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4732 "%s(%.0" NVff ") too small", opname, when);
4735 else if( when > TIME_UPPER_BOUND ) {
4736 /* diag_listed_as: gmtime(%f) too small */
4737 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4738 "%s(%.0" NVff ") too large", opname, when);
4742 if (PL_op->op_type == OP_LOCALTIME)
4743 err = Perl_localtime64_r(&when, &tmbuf);
4745 err = Perl_gmtime64_r(&when, &tmbuf);
4749 /* diag_listed_as: gmtime(%f) failed */
4750 /* XXX %lld broken for quads */
4752 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4753 "%s(%.0" NVff ") failed", opname, when);
4756 if (GIMME_V != G_ARRAY) { /* scalar context */
4763 Perl_sv_setpvf_mg(aTHX_ TARG, "%s %s %2d %02d:%02d:%02d %"IVdf,
4764 dayname[tmbuf.tm_wday],
4765 monname[tmbuf.tm_mon],
4770 (IV)tmbuf.tm_year + 1900);
4773 else { /* list context */
4779 mPUSHi(tmbuf.tm_sec);
4780 mPUSHi(tmbuf.tm_min);
4781 mPUSHi(tmbuf.tm_hour);
4782 mPUSHi(tmbuf.tm_mday);
4783 mPUSHi(tmbuf.tm_mon);
4784 mPUSHn(tmbuf.tm_year);
4785 mPUSHi(tmbuf.tm_wday);
4786 mPUSHi(tmbuf.tm_yday);
4787 mPUSHi(tmbuf.tm_isdst);
4796 /* alarm() takes an unsigned int number of seconds, and return the
4797 * unsigned int number of seconds remaining in the previous alarm
4798 * (alarms don't stack). Therefore negative return values are not
4802 /* Note that while the C library function alarm() as such has
4803 * no errors defined (or in other words, properly behaving client
4804 * code shouldn't expect any), alarm() being obsoleted by
4805 * setitimer() and often being implemented in terms of
4806 * setitimer(), can fail. */
4807 /* diag_listed_as: %s() with negative argument */
4808 Perl_ck_warner_d(aTHX_ packWARN(WARN_MISC),
4809 "alarm() with negative argument");
4810 SETERRNO(EINVAL, LIB_INVARG);
4814 unsigned int retval = alarm(anum);
4815 if ((int)retval < 0) /* Strictly speaking "cannot happen". */
4821 DIE(aTHX_ PL_no_func, "alarm");
4832 (void)time(&lasttime);
4833 if (MAXARG < 1 || (!TOPs && !POPs))
4838 /* diag_listed_as: %s() with negative argument */
4839 Perl_ck_warner_d(aTHX_ packWARN(WARN_MISC),
4840 "sleep() with negative argument");
4841 SETERRNO(EINVAL, LIB_INVARG);
4845 PerlProc_sleep((unsigned int)duration);
4849 XPUSHi(when - lasttime);
4853 /* Shared memory. */
4854 /* Merged with some message passing. */
4856 /* also used for: pp_msgrcv() pp_msgsnd() pp_semop() pp_shmread() */
4860 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4861 dSP; dMARK; dTARGET;
4862 const int op_type = PL_op->op_type;
4867 value = (I32)(do_msgsnd(MARK, SP) >= 0);
4870 value = (I32)(do_msgrcv(MARK, SP) >= 0);
4873 value = (I32)(do_semop(MARK, SP) >= 0);
4876 value = (I32)(do_shmio(op_type, MARK, SP) >= 0);
4884 return Perl_pp_semget(aTHX);
4890 /* also used for: pp_msgget() pp_shmget() */
4894 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4895 dSP; dMARK; dTARGET;
4896 const int anum = do_ipcget(PL_op->op_type, MARK, SP);
4903 DIE(aTHX_ "System V IPC is not implemented on this machine");
4907 /* also used for: pp_msgctl() pp_shmctl() */
4911 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4912 dSP; dMARK; dTARGET;
4913 const int anum = do_ipcctl(PL_op->op_type, MARK, SP);
4921 PUSHp(zero_but_true, ZBTLEN);
4925 return Perl_pp_semget(aTHX);
4929 /* I can't const this further without getting warnings about the types of
4930 various arrays passed in from structures. */
4932 S_space_join_names_mortal(pTHX_ char *const *array)
4936 PERL_ARGS_ASSERT_SPACE_JOIN_NAMES_MORTAL;
4939 target = newSVpvs_flags("", SVs_TEMP);
4941 sv_catpv(target, *array);
4944 sv_catpvs(target, " ");
4947 target = sv_mortalcopy(&PL_sv_no);
4952 /* Get system info. */
4954 /* also used for: pp_ghbyaddr() pp_ghbyname() */
4958 #if defined(HAS_GETHOSTBYNAME) || defined(HAS_GETHOSTBYADDR) || defined(HAS_GETHOSTENT)
4960 I32 which = PL_op->op_type;
4963 #ifndef HAS_GETHOST_PROTOS /* XXX Do we need individual probes? */
4964 struct hostent *gethostbyaddr(Netdb_host_t, Netdb_hlen_t, int);
4965 struct hostent *gethostbyname(Netdb_name_t);
4966 struct hostent *gethostent(void);
4968 struct hostent *hent = NULL;
4972 if (which == OP_GHBYNAME) {
4973 #ifdef HAS_GETHOSTBYNAME
4974 const char* const name = POPpbytex;
4975 hent = PerlSock_gethostbyname(name);
4977 DIE(aTHX_ PL_no_sock_func, "gethostbyname");
4980 else if (which == OP_GHBYADDR) {
4981 #ifdef HAS_GETHOSTBYADDR
4982 const int addrtype = POPi;
4983 SV * const addrsv = POPs;
4985 const char *addr = (char *)SvPVbyte(addrsv, addrlen);
4987 hent = PerlSock_gethostbyaddr(addr, (Netdb_hlen_t) addrlen, addrtype);
4989 DIE(aTHX_ PL_no_sock_func, "gethostbyaddr");
4993 #ifdef HAS_GETHOSTENT
4994 hent = PerlSock_gethostent();
4996 DIE(aTHX_ PL_no_sock_func, "gethostent");
4999 #ifdef HOST_NOT_FOUND
5001 #ifdef USE_REENTRANT_API
5002 # ifdef USE_GETHOSTENT_ERRNO
5003 h_errno = PL_reentrant_buffer->_gethostent_errno;