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__)
80 struct passwd *getpwnam (char *);
81 struct passwd *getpwuid (Uid_t);
85 struct passwd *getpwent (void);
86 # elif defined (VMS) && defined (my_getpwent)
87 struct passwd *Perl_my_getpwent (pTHX);
96 struct group *getgrnam (char *);
97 struct group *getgrgid (Gid_t);
101 struct group *getgrent (void);
107 # if defined(_MSC_VER) || defined(__MINGW32__)
108 # include <sys/utime.h>
115 # ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
118 # define my_chsize PerlLIO_chsize
119 #elif defined(HAS_TRUNCATE)
120 # define my_chsize PerlLIO_chsize
122 I32 my_chsize(int fd, Off_t length);
127 #else /* no flock() */
129 /* fcntl.h might not have been included, even if it exists, because
130 the current Configure only sets I_FCNTL if it's needed to pick up
131 the *_OK constants. Make sure it has been included before testing
132 the fcntl() locking constants. */
133 # if defined(HAS_FCNTL) && !defined(I_FCNTL)
137 # if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
138 # define FLOCK fcntl_emulate_flock
139 # define FCNTL_EMULATE_FLOCK
140 # elif defined(HAS_LOCKF)
141 # define FLOCK lockf_emulate_flock
142 # define LOCKF_EMULATE_FLOCK
146 static int FLOCK (int, int);
149 * These are the flock() constants. Since this sytems doesn't have
150 * flock(), the values of the constants are probably not available.
164 # endif /* emulating flock() */
166 #endif /* no flock() */
169 static const char zero_but_true[ZBTLEN + 1] = "0 but true";
171 #if defined(I_SYS_ACCESS) && !defined(R_OK)
172 # include <sys/access.h>
178 /* Missing protos on LynxOS */
179 void sethostent(int);
180 void endhostent(void);
182 void endnetent(void);
183 void setprotoent(int);
184 void endprotoent(void);
185 void setservent(int);
186 void endservent(void);
190 # include "amigaos4/amigaio.h"
193 #undef PERL_EFF_ACCESS /* EFFective uid/gid ACCESS */
195 /* F_OK unused: if stat() cannot find it... */
197 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
198 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
199 # define PERL_EFF_ACCESS(p,f) (access((p), (f) | EFF_ONLY_OK))
202 #if !defined(PERL_EFF_ACCESS) && defined(HAS_EACCESS)
203 # ifdef I_SYS_SECURITY
204 # include <sys/security.h>
208 # define PERL_EFF_ACCESS(p,f) (eaccess((p), (f), ACC_SELF))
211 # define PERL_EFF_ACCESS(p,f) (eaccess((p), (f)))
215 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESSX) && defined(ACC_SELF)
216 /* AIX's accessx() doesn't declare its argument const, unlike every other platform */
217 # define PERL_EFF_ACCESS(p,f) (accessx((char*)(p), (f), ACC_SELF))
221 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) \
222 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
223 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
226 S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
228 const Uid_t ruid = getuid();
229 const Uid_t euid = geteuid();
230 const Gid_t rgid = getgid();
231 const Gid_t egid = getegid();
234 #if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
235 Perl_croak(aTHX_ "switching effective uid is not implemented");
238 if (setreuid(euid, ruid))
239 # elif defined(HAS_SETRESUID)
240 if (setresuid(euid, ruid, (Uid_t)-1))
242 /* diag_listed_as: entering effective %s failed */
243 Perl_croak(aTHX_ "entering effective uid failed");
246 #if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
247 Perl_croak(aTHX_ "switching effective gid is not implemented");
250 if (setregid(egid, rgid))
251 # elif defined(HAS_SETRESGID)
252 if (setresgid(egid, rgid, (Gid_t)-1))
254 /* diag_listed_as: entering effective %s failed */
255 Perl_croak(aTHX_ "entering effective gid failed");
258 res = access(path, mode);
261 if (setreuid(ruid, euid))
262 #elif defined(HAS_SETRESUID)
263 if (setresuid(ruid, euid, (Uid_t)-1))
265 /* diag_listed_as: leaving effective %s failed */
266 Perl_croak(aTHX_ "leaving effective uid failed");
269 if (setregid(rgid, egid))
270 #elif defined(HAS_SETRESGID)
271 if (setresgid(rgid, egid, (Gid_t)-1))
273 /* diag_listed_as: leaving effective %s failed */
274 Perl_croak(aTHX_ "leaving effective gid failed");
278 # define PERL_EFF_ACCESS(p,f) (S_emulate_eaccess(aTHX_ (p), (f)))
285 const char * const tmps = POPpconstx;
286 const U8 gimme = GIMME_V;
287 const char *mode = "r";
290 if (PL_op->op_private & OPpOPEN_IN_RAW)
292 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
294 fp = PerlProc_popen(tmps, mode);
296 const char * const type = Perl_PerlIO_context_layers(aTHX_ NULL);
298 PerlIO_apply_layers(aTHX_ fp,mode,type);
300 if (gimme == G_VOID) {
302 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
305 else if (gimme == G_SCALAR) {
306 ENTER_with_name("backtick");
308 PL_rs = &PL_sv_undef;
309 SvPVCLEAR(TARG); /* note that this preserves previous buffer */
310 while (sv_gets(TARG, fp, SvCUR(TARG)) != NULL)
312 LEAVE_with_name("backtick");
318 SV * const sv = newSV(79);
319 if (sv_gets(sv, fp, 0) == NULL) {
324 if (SvLEN(sv) - SvCUR(sv) > 20) {
325 SvPV_shrink_to_cur(sv);
330 STATUS_NATIVE_CHILD_SET(PerlProc_pclose(fp));
331 TAINT; /* "I believe that this is not gratuitous!" */
334 STATUS_NATIVE_CHILD_SET(-1);
335 if (gimme == G_SCALAR)
346 GV * const gv = (PL_op->op_flags & OPf_SPECIAL) ? NULL : (GV *)POPs;
350 /* make a copy of the pattern if it is gmagical, to ensure that magic
351 * is called once and only once */
352 if (SvGMAGICAL(TOPs)) TOPs = sv_2mortal(newSVsv(TOPs));
354 tryAMAGICunTARGETlist(iter_amg, (PL_op->op_flags & OPf_SPECIAL));
356 if (PL_op->op_flags & OPf_SPECIAL) {
357 /* call Perl-level glob function instead. Stack args are:
359 * and following OPs should be: gv(CORE::GLOBAL::glob), entersub
368 /* Note that we only ever get here if File::Glob fails to load
369 * without at the same time croaking, for some reason, or if
370 * perl was built with PERL_EXTERNAL_GLOB */
372 ENTER_with_name("glob");
377 * The external globbing program may use things we can't control,
378 * so for security reasons we must assume the worst.
381 taint_proper(PL_no_security, "glob");
385 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
388 SAVESPTR(PL_rs); /* This is not permanent, either. */
389 PL_rs = newSVpvs_flags("\000", SVs_TEMP);
392 *SvPVX(PL_rs) = '\n';
396 result = do_readline();
397 LEAVE_with_name("glob");
403 PL_last_in_gv = cGVOP_gv;
404 return do_readline();
414 do_join(TARG, &PL_sv_no, MARK, SP);
418 else if (SP == MARK) {
425 if (SvGMAGICAL(exsv)) exsv = sv_mortalcopy(exsv);
428 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
429 /* well-formed exception supplied */
432 SV * const errsv = ERRSV;
435 if (SvGMAGICAL(errsv)) {
436 exsv = sv_newmortal();
437 sv_setsv_nomg(exsv, errsv);
441 else if (SvPOKp(errsv) ? SvCUR(errsv) : SvNIOKp(errsv)) {
442 exsv = sv_newmortal();
443 sv_setsv_nomg(exsv, errsv);
444 sv_catpvs(exsv, "\t...caught");
447 exsv = newSVpvs_flags("Warning: something's wrong", SVs_TEMP);
450 if (SvROK(exsv) && !PL_warnhook)
451 Perl_warn(aTHX_ "%" SVf, SVfARG(exsv));
463 VMSISH_HUSHED || (PL_curcop->op_private & OPpHUSH_VMSISH);
465 if (SP - MARK != 1) {
467 do_join(TARG, &PL_sv_no, MARK, SP);
475 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
476 /* well-formed exception supplied */
479 SV * const errsv = ERRSV;
483 if (sv_isobject(exsv)) {
484 HV * const stash = SvSTASH(SvRV(exsv));
485 GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
487 SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
488 SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
495 call_sv(MUTABLE_SV(GvCV(gv)),
496 G_SCALAR|G_EVAL|G_KEEPERR);
497 exsv = sv_mortalcopy(*PL_stack_sp--);
501 else if (SvOK(errsv) && (SvPV_nomg(errsv,len), len)) {
502 exsv = sv_mortalcopy(errsv);
503 sv_catpvs(exsv, "\t...propagated");
506 exsv = newSVpvs_flags("Died", SVs_TEMP);
510 NOT_REACHED; /* NOTREACHED */
511 return NULL; /* avoid missing return from non-void function warning */
517 Perl_tied_method(pTHX_ SV *methname, SV **sp, SV *const sv,
518 const MAGIC *const mg, const U32 flags, U32 argc, ...)
524 PERL_ARGS_ASSERT_TIED_METHOD;
526 /* Ensure that our flag bits do not overlap. */
527 STATIC_ASSERT_STMT((TIED_METHOD_MORTALIZE_NOT_NEEDED & G_WANT) == 0);
528 STATIC_ASSERT_STMT((TIED_METHOD_ARGUMENTS_ON_STACK & G_WANT) == 0);
529 STATIC_ASSERT_STMT((TIED_METHOD_SAY & G_WANT) == 0);
531 PUTBACK; /* sp is at *foot* of args, so this pops args from old stack */
532 PUSHSTACKi(PERLSI_MAGIC);
533 /* extend for object + args. If argc might wrap/truncate when cast
534 * to SSize_t and incremented, set to -1, which will trigger a panic in
536 * The weird way this is written is because g++ is dumb enough to
537 * warn "comparison is always false" on something like:
539 * sizeof(a) >= sizeof(b) && a >= B_t_MAX -1
541 * (where the LH condition is false)
544 (argc > (sizeof(argc) >= sizeof(SSize_t) ? SSize_t_MAX - 1 : argc))
545 ? -1 : (SSize_t)argc + 1;
546 EXTEND(SP, extend_size);
548 PUSHs(SvTIED_obj(sv, mg));
549 if (flags & TIED_METHOD_ARGUMENTS_ON_STACK) {
550 Copy(orig_sp + 2, sp + 1, argc, SV*); /* copy args to new stack */
554 const U32 mortalize_not_needed
555 = flags & TIED_METHOD_MORTALIZE_NOT_NEEDED;
557 va_start(args, argc);
559 SV *const arg = va_arg(args, SV *);
560 if(mortalize_not_needed)
569 ENTER_with_name("call_tied_method");
570 if (flags & TIED_METHOD_SAY) {
571 /* local $\ = "\n" */
572 SAVEGENERICSV(PL_ors_sv);
573 PL_ors_sv = newSVpvs("\n");
575 ret_args = call_sv(methname, (flags & G_WANT)|G_METHOD_NAMED);
580 if (ret_args) { /* copy results back to original stack */
581 EXTEND(sp, ret_args);
582 Copy(orig_sp - ret_args + 1, sp + 1, ret_args, SV*);
586 LEAVE_with_name("call_tied_method");
590 #define tied_method0(a,b,c,d) \
591 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,0)
592 #define tied_method1(a,b,c,d,e) \
593 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,1,e)
594 #define tied_method2(a,b,c,d,e,f) \
595 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,2,e,f)
608 GV * const gv = MUTABLE_GV(*++MARK);
610 if (!isGV(gv) && !(SvTYPE(gv) == SVt_PVLV && isGV_with_GP(gv)))
611 DIE(aTHX_ PL_no_usym, "filehandle");
613 if ((io = GvIOp(gv))) {
615 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
618 Perl_croak(aTHX_ "Cannot open %" HEKf " as a filehandle: it is already open as a dirhandle",
619 HEKfARG(GvENAME_HEK(gv)));
621 mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
623 /* Method's args are same as ours ... */
624 /* ... except handle is replaced by the object */
625 return Perl_tied_method(aTHX_ SV_CONST(OPEN), mark - 1, MUTABLE_SV(io), mg,
626 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
638 tmps = SvPV_const(sv, len);
639 ok = do_open6(gv, tmps, len, NULL, MARK+1, (SP-MARK));
642 PUSHi( (I32)PL_forkprocess );
643 else if (PL_forkprocess == 0) /* we are a new child */
653 /* pp_coreargs pushes a NULL to indicate no args passed to
656 MAXARG == 0 || (!TOPs && !POPs) ? PL_defoutgv : MUTABLE_GV(POPs);
662 IO * const io = GvIO(gv);
664 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
666 return tied_method0(SV_CONST(CLOSE), SP, MUTABLE_SV(io), mg);
670 PUSHs(boolSV(do_close(gv, TRUE)));
682 GV * const wgv = MUTABLE_GV(POPs);
683 GV * const rgv = MUTABLE_GV(POPs);
687 do_close(rgv, FALSE);
691 do_close(wgv, FALSE);
693 if (PerlProc_pipe_cloexec(fd) < 0)
696 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r" PIPE_OPEN_MODE);
697 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w" PIPE_OPEN_MODE);
698 IoOFP(rstio) = IoIFP(rstio);
699 IoIFP(wstio) = IoOFP(wstio);
700 IoTYPE(rstio) = IoTYPE_RDONLY;
701 IoTYPE(wstio) = IoTYPE_WRONLY;
703 if (!IoIFP(rstio) || !IoOFP(wstio)) {
705 PerlIO_close(IoIFP(rstio));
707 PerlLIO_close(fd[0]);
709 PerlIO_close(IoOFP(wstio));
711 PerlLIO_close(fd[1]);
719 DIE(aTHX_ PL_no_func, "pipe");
733 gv = MUTABLE_GV(POPs);
737 && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar)))
739 return tied_method0(SV_CONST(FILENO), SP, MUTABLE_SV(io), mg);
742 if (io && IoDIRP(io)) {
743 #if defined(HAS_DIRFD) || defined(HAS_DIR_DD_FD)
744 PUSHi(my_dirfd(IoDIRP(io)));
746 #elif defined(ENOTSUP)
747 errno = ENOTSUP; /* Operation not supported */
749 #elif defined(EOPNOTSUPP)
750 errno = EOPNOTSUPP; /* Operation not supported on socket */
753 errno = EINVAL; /* Invalid argument */
758 if (!io || !(fp = IoIFP(io))) {
759 /* Can't do this because people seem to do things like
760 defined(fileno($foo)) to check whether $foo is a valid fh.
767 PUSHi(PerlIO_fileno(fp));
778 if (MAXARG < 1 || (!TOPs && !POPs)) {
779 anum = PerlLIO_umask(022);
780 /* setting it to 022 between the two calls to umask avoids
781 * to have a window where the umask is set to 0 -- meaning
782 * that another thread could create world-writeable files. */
784 (void)PerlLIO_umask(anum);
787 anum = PerlLIO_umask(POPi);
788 TAINT_PROPER("umask");
791 /* Only DIE if trying to restrict permissions on "user" (self).
792 * Otherwise it's harmless and more useful to just return undef
793 * since 'group' and 'other' concepts probably don't exist here. */
794 if (MAXARG >= 1 && (TOPs||POPs) && (POPi & 0700))
795 DIE(aTHX_ "umask not implemented");
796 XPUSHs(&PL_sv_undef);
815 gv = MUTABLE_GV(POPs);
819 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
821 /* This takes advantage of the implementation of the varargs
822 function, which I don't think that the optimiser will be able to
823 figure out. Although, as it's a static function, in theory it
825 return Perl_tied_method(aTHX_ SV_CONST(BINMODE), SP, MUTABLE_SV(io), mg,
826 G_SCALAR|TIED_METHOD_MORTALIZE_NOT_NEEDED,
827 discp ? 1 : 0, discp);
831 if (!io || !(fp = IoIFP(io))) {
833 SETERRNO(EBADF,RMS_IFI);
840 const char *d = NULL;
843 d = SvPV_const(discp, len);
844 mode = mode_from_discipline(d, len);
845 if (PerlIO_binmode(aTHX_ fp, IoTYPE(io), mode, d)) {
846 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
847 if (!PerlIO_binmode(aTHX_ IoOFP(io), IoTYPE(io), mode, d)) {
868 const I32 markoff = MARK - PL_stack_base;
869 const char *methname;
870 int how = PERL_MAGIC_tied;
874 switch(SvTYPE(varsv)) {
878 methname = "TIEHASH";
879 if (HvLAZYDEL(varsv) && (entry = HvEITER((HV *)varsv))) {
880 HvLAZYDEL_off(varsv);
881 hv_free_ent((HV *)varsv, entry);
883 HvEITER_set(MUTABLE_HV(varsv), 0);
887 methname = "TIEARRAY";
888 if (!AvREAL(varsv)) {
890 Perl_croak(aTHX_ "Cannot tie unreifiable array");
891 av_clear((AV *)varsv);
898 if (isGV_with_GP(varsv) && !SvFAKE(varsv)) {
899 methname = "TIEHANDLE";
900 how = PERL_MAGIC_tiedscalar;
901 /* For tied filehandles, we apply tiedscalar magic to the IO
902 slot of the GP rather than the GV itself. AMS 20010812 */
904 GvIOp(varsv) = newIO();
905 varsv = MUTABLE_SV(GvIOp(varsv));
908 if (SvTYPE(varsv) == SVt_PVLV && LvTYPE(varsv) == 'y') {
909 vivify_defelem(varsv);
910 varsv = LvTARG(varsv);
914 methname = "TIESCALAR";
915 how = PERL_MAGIC_tiedscalar;
919 if (sv_isobject(*MARK)) { /* Calls GET magic. */
920 ENTER_with_name("call_TIE");
921 PUSHSTACKi(PERLSI_MAGIC);
923 EXTEND(SP,(I32)items);
927 call_method(methname, G_SCALAR);
930 /* Can't use call_method here, else this: fileno FOO; tie @a, "FOO"
931 * will attempt to invoke IO::File::TIEARRAY, with (best case) the
932 * wrong error message, and worse case, supreme action at a distance.
933 * (Sorry obfuscation writers. You're not going to be given this one.)
935 stash = gv_stashsv(*MARK, 0);
938 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%" SVf "\"",
939 methname, SVfARG(*MARK));
940 else if (isGV(*MARK)) {
941 /* If the glob doesn't name an existing package, using
942 * SVfARG(*MARK) would yield "*Foo::Bar" or *main::Foo. So
943 * generate the name for the error message explicitly. */
944 SV *stashname = sv_2mortal(newSV(0));
945 gv_fullname4(stashname, (GV *) *MARK, NULL, FALSE);
946 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%" SVf "\"",
947 methname, SVfARG(stashname));
950 SV *stashname = !SvPOK(*MARK) ? &PL_sv_no
951 : SvCUR(*MARK) ? *MARK
952 : sv_2mortal(newSVpvs("main"));
953 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%" SVf "\""
954 " (perhaps you forgot to load \"%" SVf "\"?)",
955 methname, SVfARG(stashname), SVfARG(stashname));
958 else if (!(gv = gv_fetchmethod(stash, methname))) {
959 /* The effective name can only be NULL for stashes that have
960 * been deleted from the symbol table, which this one can't
961 * be, since we just looked it up by name.
963 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%" HEKf "\"",
964 methname, HvENAME_HEK_NN(stash));
966 ENTER_with_name("call_TIE");
967 PUSHSTACKi(PERLSI_MAGIC);
969 EXTEND(SP,(I32)items);
973 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
979 if (sv_isobject(sv)) {
980 sv_unmagic(varsv, how);
981 /* Croak if a self-tie on an aggregate is attempted. */
982 if (varsv == SvRV(sv) &&
983 (SvTYPE(varsv) == SVt_PVAV ||
984 SvTYPE(varsv) == SVt_PVHV))
986 "Self-ties of arrays and hashes are not supported");
987 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
989 LEAVE_with_name("call_TIE");
990 SP = PL_stack_base + markoff;
996 /* also used for: pp_dbmclose() */
1003 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
1004 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
1006 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
1009 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y' &&
1010 !(sv = defelem_target(sv, NULL))) RETPUSHUNDEF;
1012 if ((mg = SvTIED_mg(sv, how))) {
1013 SV * const obj = SvRV(SvTIED_obj(sv, mg));
1014 if (obj && SvSTASH(obj)) {
1015 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
1017 if (gv && isGV(gv) && (cv = GvCV(gv))) {
1019 PUSHs(SvTIED_obj(MUTABLE_SV(gv), mg));
1020 mXPUSHi(SvREFCNT(obj) - 1);
1022 ENTER_with_name("call_UNTIE");
1023 call_sv(MUTABLE_SV(cv), G_VOID);
1024 LEAVE_with_name("call_UNTIE");
1027 else if (mg && SvREFCNT(obj) > 1) {
1028 Perl_ck_warner(aTHX_ packWARN(WARN_UNTIE),
1029 "untie attempted while %" UVuf " inner references still exist",
1030 (UV)SvREFCNT(obj) - 1 ) ;
1034 sv_unmagic(sv, how) ;
1043 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
1044 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
1046 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
1049 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y' &&
1050 !(sv = defelem_target(sv, NULL))) goto ret_undef;
1052 if ((mg = SvTIED_mg(sv, how))) {
1053 SETs(SvTIED_obj(sv, mg));
1054 return NORMAL; /* PUTBACK not needed, pp_tied never moves SP */
1068 HV * const hv = MUTABLE_HV(POPs);
1069 SV * const sv = newSVpvs_flags("AnyDBM_File", SVs_TEMP);
1070 stash = gv_stashsv(sv, 0);
1071 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
1073 require_pv("AnyDBM_File.pm");
1075 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH")))
1076 DIE(aTHX_ "No dbm on this machine");
1086 mPUSHu(O_RDWR|O_CREAT);
1090 if (!SvOK(right)) right = &PL_sv_no;
1094 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
1097 if (!sv_isobject(TOPs)) {
1105 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
1107 if (sv_isobject(TOPs))
1112 sv_unmagic(MUTABLE_SV(hv), PERL_MAGIC_tied);
1113 sv_magic(MUTABLE_SV(hv), TOPs, PERL_MAGIC_tied, NULL, 0);
1130 struct timeval timebuf;
1131 struct timeval *tbuf = &timebuf;
1135 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1140 # if BYTEORDER & 0xf0000
1141 # define ORDERBYTE (0x88888888 - BYTEORDER)
1143 # define ORDERBYTE (0x4444 - BYTEORDER)
1149 for (i = 1; i <= 3; i++) {
1150 SV * const sv = svs[i] = SP[i];
1154 if (SvREADONLY(sv)) {
1155 if (!(SvPOK(sv) && SvCUR(sv) == 0))
1156 Perl_croak_no_modify();
1158 else if (SvIsCOW(sv)) sv_force_normal_flags(sv, 0);
1161 Perl_ck_warner(aTHX_ packWARN(WARN_MISC),
1162 "Non-string passed as bitmask");
1163 if (SvGAMAGIC(sv)) {
1164 svs[i] = sv_newmortal();
1165 sv_copypv_nomg(svs[i], sv);
1168 SvPV_force_nomg_nolen(sv); /* force string conversion */
1175 /* little endians can use vecs directly */
1176 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1183 masksize = NFDBITS / NBBY;
1185 masksize = sizeof(long); /* documented int, everyone seems to use long */
1187 Zero(&fd_sets[0], 4, char*);
1190 # if SELECT_MIN_BITS == 1
1191 growsize = sizeof(fd_set);
1193 # if defined(__GLIBC__) && defined(__FD_SETSIZE)
1194 # undef SELECT_MIN_BITS
1195 # define SELECT_MIN_BITS __FD_SETSIZE
1197 /* If SELECT_MIN_BITS is greater than one we most probably will want
1198 * to align the sizes with SELECT_MIN_BITS/8 because for example
1199 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
1200 * UNIX, Solaris, Darwin) the smallest quantum select() operates
1201 * on (sets/tests/clears bits) is 32 bits. */
1202 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
1208 value = SvNV_nomg(sv);
1211 timebuf.tv_sec = (long)value;
1212 value -= (NV)timebuf.tv_sec;
1213 timebuf.tv_usec = (long)(value * 1000000.0);
1218 for (i = 1; i <= 3; i++) {
1220 if (!SvOK(sv) || SvCUR(sv) == 0) {
1227 Sv_Grow(sv, growsize);
1231 while (++j <= growsize) {
1235 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1237 Newx(fd_sets[i], growsize, char);
1238 for (offset = 0; offset < growsize; offset += masksize) {
1239 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1240 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1243 fd_sets[i] = SvPVX(sv);
1247 #ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1248 /* Can't make just the (void*) conditional because that would be
1249 * cpp #if within cpp macro, and not all compilers like that. */
1250 nfound = PerlSock_select(
1252 (Select_fd_set_t) fd_sets[1],
1253 (Select_fd_set_t) fd_sets[2],
1254 (Select_fd_set_t) fd_sets[3],
1255 (void*) tbuf); /* Workaround for compiler bug. */
1257 nfound = PerlSock_select(
1259 (Select_fd_set_t) fd_sets[1],
1260 (Select_fd_set_t) fd_sets[2],
1261 (Select_fd_set_t) fd_sets[3],
1264 for (i = 1; i <= 3; i++) {
1267 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1269 for (offset = 0; offset < growsize; offset += masksize) {
1270 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1271 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1273 Safefree(fd_sets[i]);
1276 SvSetMagicSV(SP[i], sv);
1283 if (GIMME_V == G_ARRAY && tbuf) {
1284 value = (NV)(timebuf.tv_sec) +
1285 (NV)(timebuf.tv_usec) / 1000000.0;
1290 DIE(aTHX_ "select not implemented");
1298 =for apidoc setdefout
1300 Sets C<PL_defoutgv>, the default file handle for output, to the passed in
1301 typeglob. As C<PL_defoutgv> "owns" a reference on its typeglob, the reference
1302 count of the passed in typeglob is increased by one, and the reference count
1303 of the typeglob that C<PL_defoutgv> points to is decreased by one.
1309 Perl_setdefout(pTHX_ GV *gv)
1311 GV *oldgv = PL_defoutgv;
1313 PERL_ARGS_ASSERT_SETDEFOUT;
1315 SvREFCNT_inc_simple_void_NN(gv);
1317 SvREFCNT_dec(oldgv);
1324 GV * const newdefout = (PL_op->op_private > 0) ? (MUTABLE_GV(POPs)) : NULL;
1325 GV * egv = GvEGVx(PL_defoutgv);
1330 hv = isGV_with_GP(egv) ? GvSTASH(egv) : NULL;
1331 gvp = hv && HvENAME(hv)
1332 ? (GV**)hv_fetch(hv, GvNAME(egv), HEK_UTF8(GvNAME_HEK(egv)) ? -GvNAMELEN(egv) : GvNAMELEN(egv), FALSE)
1334 if (gvp && *gvp == egv) {
1335 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
1339 mXPUSHs(newRV(MUTABLE_SV(egv)));
1343 if (!GvIO(newdefout))
1344 gv_IOadd(newdefout);
1345 setdefout(newdefout);
1354 /* pp_coreargs pushes a NULL to indicate no args passed to
1357 MAXARG==0 || (!TOPs && !POPs) ? PL_stdingv : MUTABLE_GV(POPs);
1358 IO *const io = GvIO(gv);
1364 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1366 const U8 gimme = GIMME_V;
1367 Perl_tied_method(aTHX_ SV_CONST(GETC), SP, MUTABLE_SV(io), mg, gimme, 0);
1368 if (gimme == G_SCALAR) {
1370 SvSetMagicSV_nosteal(TARG, TOPs);
1375 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
1376 if (!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
1378 SETERRNO(EBADF,RMS_IFI);
1382 sv_setpvs(TARG, " ");
1383 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
1384 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1385 /* Find out how many bytes the char needs */
1386 Size_t len = UTF8SKIP(SvPVX_const(TARG));
1389 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1390 SvCUR_set(TARG,1+len);
1394 else SvUTF8_off(TARG);
1400 S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
1403 const U8 gimme = GIMME_V;
1405 PERL_ARGS_ASSERT_DOFORM;
1408 cv = MUTABLE_CV(sv_2mortal(MUTABLE_SV(cv_clone(cv))));
1410 cx = cx_pushblock(CXt_FORMAT, gimme, PL_stack_sp, PL_savestack_ix);
1411 cx_pushformat(cx, cv, retop, gv);
1412 if (CvDEPTH(cv) >= 2)
1413 pad_push(CvPADLIST(cv), CvDEPTH(cv));
1414 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), CvDEPTH(cv));
1416 setdefout(gv); /* locally select filehandle so $% et al work */
1433 gv = MUTABLE_GV(POPs);
1450 SV * const tmpsv = sv_newmortal();
1451 gv_efullname4(tmpsv, fgv, NULL, FALSE);
1452 DIE(aTHX_ "Undefined format \"%" SVf "\" called", SVfARG(tmpsv));
1454 IoFLAGS(io) &= ~IOf_DIDTOP;
1455 RETURNOP(doform(cv,gv,PL_op->op_next));
1461 GV * const gv = CX_CUR()->blk_format.gv;
1462 IO * const io = GvIOp(gv);
1467 bool is_return = cBOOL(PL_op->op_type == OP_RETURN);
1469 if (is_return || !io || !(ofp = IoOFP(io)))
1472 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
1473 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
1475 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1476 PL_formtarget != PL_toptarget)
1480 if (!IoTOP_GV(io)) {
1483 if (!IoTOP_NAME(io)) {
1485 if (!IoFMT_NAME(io))
1486 IoFMT_NAME(io) = savepv(GvNAME(gv));
1487 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%" HEKf "_TOP",
1488 HEKfARG(GvNAME_HEK(gv))));
1489 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
1490 if ((topgv && GvFORM(topgv)) ||
1491 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
1492 IoTOP_NAME(io) = savesvpv(topname);
1494 IoTOP_NAME(io) = savepvs("top");
1496 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
1497 if (!topgv || !GvFORM(topgv)) {
1498 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1501 IoTOP_GV(io) = topgv;
1503 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1504 I32 lines = IoLINES_LEFT(io);
1505 const char *s = SvPVX_const(PL_formtarget);
1506 const char *e = SvEND(PL_formtarget);
1507 if (lines <= 0) /* Yow, header didn't even fit!!! */
1509 while (lines-- > 0) {
1510 s = (char *) memchr(s, '\n', e - s);
1516 const STRLEN save = SvCUR(PL_formtarget);
1517 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
1518 do_print(PL_formtarget, ofp);
1519 SvCUR_set(PL_formtarget, save);
1520 sv_chop(PL_formtarget, s);
1521 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
1524 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
1525 do_print(GvSV(gv_fetchpvs("\f", GV_ADD, SVt_PV)), ofp);
1526 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1528 PL_formtarget = PL_toptarget;
1529 IoFLAGS(io) |= IOf_DIDTOP;
1531 assert(fgv); /* IoTOP_GV(io) should have been set above */
1534 SV * const sv = sv_newmortal();
1535 gv_efullname4(sv, fgv, NULL, FALSE);
1536 DIE(aTHX_ "Undefined top format \"%" SVf "\" called", SVfARG(sv));
1538 return doform(cv, gv, PL_op);
1543 assert(CxTYPE(cx) == CXt_FORMAT);
1544 SP = PL_stack_base + cx->blk_oldsp; /* ignore retval of formline */
1548 retop = cx->blk_sub.retop;
1554 /* XXX the semantics of doing 'return' in a format aren't documented.
1555 * Currently we ignore any args to 'return' and just return
1556 * a single undef in both scalar and list contexts
1558 PUSHs(&PL_sv_undef);
1559 else if (!io || !(fp = IoOFP(io))) {
1560 if (io && IoIFP(io))
1561 report_wrongway_fh(gv, '<');
1567 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
1568 Perl_ck_warner(aTHX_ packWARN(WARN_IO), "page overflow");
1570 if (!do_print(PL_formtarget, fp))
1573 FmLINES(PL_formtarget) = 0;
1574 SvCUR_set(PL_formtarget, 0);
1575 *SvEND(PL_formtarget) = '\0';
1576 if (IoFLAGS(io) & IOf_FLUSH)
1577 (void)PerlIO_flush(fp);
1581 PL_formtarget = PL_bodytarget;
1587 dSP; dMARK; dORIGMARK;
1591 = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv;
1592 IO *const io = GvIO(gv);
1594 /* Treat empty list as "" */
1595 if (MARK == SP) XPUSHs(&PL_sv_no);
1598 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1600 if (MARK == ORIGMARK) {
1603 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1606 return Perl_tied_method(aTHX_ SV_CONST(PRINTF), mark - 1, MUTABLE_SV(io),
1608 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1615 SETERRNO(EBADF,RMS_IFI);
1618 else if (!(fp = IoOFP(io))) {
1620 report_wrongway_fh(gv, '<');
1621 else if (ckWARN(WARN_CLOSED))
1623 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
1627 SV *sv = sv_newmortal();
1628 do_sprintf(sv, SP - MARK, MARK + 1);
1629 if (!do_print(sv, fp))
1632 if (IoFLAGS(io) & IOf_FLUSH)
1633 if (PerlIO_flush(fp) == EOF)
1642 PUSHs(&PL_sv_undef);
1649 const int perm = (MAXARG > 3 && (TOPs || POPs)) ? POPi : 0666;
1650 const int mode = POPi;
1651 SV * const sv = POPs;
1652 GV * const gv = MUTABLE_GV(POPs);
1655 /* Need TIEHANDLE method ? */
1656 const char * const tmps = SvPV_const(sv, len);
1657 if (do_open_raw(gv, tmps, len, mode, perm, NULL)) {
1658 IoLINES(GvIOp(gv)) = 0;
1662 PUSHs(&PL_sv_undef);
1668 /* also used for: pp_read() and pp_recv() (where supported) */
1672 dSP; dMARK; dORIGMARK; dTARGET;
1686 bool charstart = FALSE;
1687 STRLEN charskip = 0;
1689 GV * const gv = MUTABLE_GV(*++MARK);
1692 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1693 && gv && (io = GvIO(gv)) )
1695 const MAGIC *const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1697 return Perl_tied_method(aTHX_ SV_CONST(READ), mark - 1, MUTABLE_SV(io), mg,
1698 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1708 length = SvIVx(*++MARK);
1710 DIE(aTHX_ "Negative length");
1713 offset = SvIVx(*++MARK);
1717 if (!io || !IoIFP(io)) {
1719 SETERRNO(EBADF,RMS_IFI);
1723 /* Note that fd can here validly be -1, don't check it yet. */
1724 fd = PerlIO_fileno(IoIFP(io));
1726 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
1727 if (PL_op->op_type == OP_SYSREAD || PL_op->op_type == OP_RECV) {
1729 "%s() isn't allowed on :utf8 handles",
1732 buffer = SvPVutf8_force(bufsv, blen);
1733 /* UTF-8 may not have been set if they are all low bytes */
1738 buffer = SvPV_force(bufsv, blen);
1739 buffer_utf8 = DO_UTF8(bufsv);
1741 if (DO_UTF8(bufsv)) {
1742 blen = sv_len_utf8_nomg(bufsv);
1751 if (PL_op->op_type == OP_RECV) {
1752 Sock_size_t bufsize;
1753 char namebuf[MAXPATHLEN];
1755 SETERRNO(EBADF,SS_IVCHAN);
1758 #if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
1759 bufsize = sizeof (struct sockaddr_in);
1761 bufsize = sizeof namebuf;
1763 #ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1767 buffer = SvGROW(bufsv, (STRLEN)(length+1));
1768 /* 'offset' means 'flags' here */
1769 count = PerlSock_recvfrom(fd, buffer, length, offset,
1770 (struct sockaddr *)namebuf, &bufsize);
1773 /* MSG_TRUNC can give oversized count; quietly lose it */
1776 SvCUR_set(bufsv, count);
1777 *SvEND(bufsv) = '\0';
1778 (void)SvPOK_only(bufsv);
1782 /* This should not be marked tainted if the fp is marked clean */
1783 if (!(IoFLAGS(io) & IOf_UNTAINT))
1784 SvTAINTED_on(bufsv);
1786 #if defined(__CYGWIN__)
1787 /* recvfrom() on cygwin doesn't set bufsize at all for
1788 connected sockets, leaving us with trash in the returned
1789 name, so use the same test as the Win32 code to check if it
1790 wasn't set, and set it [perl #118843] */
1791 if (bufsize == sizeof namebuf)
1794 sv_setpvn(TARG, namebuf, bufsize);
1800 if (-offset > (SSize_t)blen)
1801 DIE(aTHX_ "Offset outside string");
1804 if (DO_UTF8(bufsv)) {
1805 /* convert offset-as-chars to offset-as-bytes */
1806 if (offset >= (SSize_t)blen)
1807 offset += SvCUR(bufsv) - blen;
1809 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
1813 /* Reestablish the fd in case it shifted from underneath us. */
1814 fd = PerlIO_fileno(IoIFP(io));
1816 orig_size = SvCUR(bufsv);
1817 /* Allocating length + offset + 1 isn't perfect in the case of reading
1818 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1820 (should be 2 * length + offset + 1, or possibly something longer if
1821 IN_ENCODING Is true) */
1822 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
1823 if (offset > 0 && offset > (SSize_t)orig_size) { /* Zero any newly allocated space */
1824 Zero(buffer+orig_size, offset-orig_size, char);
1826 buffer = buffer + offset;
1828 read_target = bufsv;
1830 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1831 concatenate it to the current buffer. */
1833 /* Truncate the existing buffer to the start of where we will be
1835 SvCUR_set(bufsv, offset);
1837 read_target = sv_newmortal();
1838 SvUPGRADE(read_target, SVt_PV);
1839 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1842 if (PL_op->op_type == OP_SYSREAD) {
1843 #ifdef PERL_SOCK_SYSREAD_IS_RECV
1844 if (IoTYPE(io) == IoTYPE_SOCKET) {
1846 SETERRNO(EBADF,SS_IVCHAN);
1850 count = PerlSock_recv(fd, buffer, length, 0);
1856 SETERRNO(EBADF,RMS_IFI);
1860 count = PerlLIO_read(fd, buffer, length);
1865 count = PerlIO_read(IoIFP(io), buffer, length);
1866 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1867 if (count == 0 && PerlIO_error(IoIFP(io)))
1871 if (IoTYPE(io) == IoTYPE_WRONLY)
1872 report_wrongway_fh(gv, '>');
1875 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1876 *SvEND(read_target) = '\0';
1877 (void)SvPOK_only(read_target);
1878 if (fp_utf8 && !IN_BYTES) {
1879 /* Look at utf8 we got back and count the characters */
1880 const char *bend = buffer + count;
1881 while (buffer < bend) {
1883 skip = UTF8SKIP(buffer);
1886 if (buffer - charskip + skip > bend) {
1887 /* partial character - try for rest of it */
1888 length = skip - (bend-buffer);
1889 offset = bend - SvPVX_const(bufsv);
1901 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1902 provided amount read (count) was what was requested (length)
1904 if (got < wanted && count == length) {
1905 length = wanted - got;
1906 offset = bend - SvPVX_const(bufsv);
1909 /* return value is character count */
1913 else if (buffer_utf8) {
1914 /* Let svcatsv upgrade the bytes we read in to utf8.
1915 The buffer is a mortal so will be freed soon. */
1916 sv_catsv_nomg(bufsv, read_target);
1919 /* This should not be marked tainted if the fp is marked clean */
1920 if (!(IoFLAGS(io) & IOf_UNTAINT))
1921 SvTAINTED_on(bufsv);
1932 /* also used for: pp_send() where defined */
1936 dSP; dMARK; dORIGMARK; dTARGET;
1941 const int op_type = PL_op->op_type;
1944 GV *const gv = MUTABLE_GV(*++MARK);
1945 IO *const io = GvIO(gv);
1948 if (op_type == OP_SYSWRITE && io) {
1949 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1951 if (MARK == SP - 1) {
1953 mXPUSHi(sv_len(sv));
1957 return Perl_tied_method(aTHX_ SV_CONST(WRITE), mark - 1, MUTABLE_SV(io), mg,
1958 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1968 if (!io || !IoIFP(io) || IoTYPE(io) == IoTYPE_RDONLY) {
1970 if (io && IoIFP(io))
1971 report_wrongway_fh(gv, '<');
1974 SETERRNO(EBADF,RMS_IFI);
1977 fd = PerlIO_fileno(IoIFP(io));
1979 SETERRNO(EBADF,SS_IVCHAN);
1984 /* Do this first to trigger any overloading. */
1985 buffer = SvPV_const(bufsv, blen);
1986 doing_utf8 = DO_UTF8(bufsv);
1988 if (PerlIO_isutf8(IoIFP(io))) {
1990 "%s() isn't allowed on :utf8 handles",
1993 else if (doing_utf8) {
1994 STRLEN tmplen = blen;
1995 U8 * const result = bytes_from_utf8((const U8*) buffer, &tmplen, &doing_utf8);
1998 buffer = (char *) tmpbuf;
2002 assert((char *)result == buffer);
2003 Perl_croak(aTHX_ "Wide character in %s", OP_DESC(PL_op));
2008 if (op_type == OP_SEND) {
2009 const int flags = SvIVx(*++MARK);
2012 char * const sockbuf = SvPVx(*++MARK, mlen);
2013 retval = PerlSock_sendto(fd, buffer, blen,
2014 flags, (struct sockaddr *)sockbuf, mlen);
2017 retval = PerlSock_send(fd, buffer, blen, flags);
2023 Size_t length = 0; /* This length is in characters. */
2029 #if Size_t_size > IVSIZE
2030 length = (Size_t)SvNVx(*++MARK);
2032 length = (Size_t)SvIVx(*++MARK);
2034 if ((SSize_t)length < 0) {
2036 DIE(aTHX_ "Negative length");
2041 offset = SvIVx(*++MARK);
2043 if (-offset > (IV)blen) {
2045 DIE(aTHX_ "Offset outside string");
2048 } else if (offset > (IV)blen) {
2050 DIE(aTHX_ "Offset outside string");
2054 if (length > blen - offset)
2055 length = blen - offset;
2056 buffer = buffer+offset;
2058 #ifdef PERL_SOCK_SYSWRITE_IS_SEND
2059 if (IoTYPE(io) == IoTYPE_SOCKET) {
2060 retval = PerlSock_send(fd, buffer, length, 0);
2065 /* See the note at doio.c:do_print about filesize limits. --jhi */
2066 retval = PerlLIO_write(fd, buffer, length);
2075 #if Size_t_size > IVSIZE
2095 * in Perl 5.12 and later, the additional parameter is a bitmask:
2098 * 2 = eof() <- ARGV magic
2100 * I'll rely on the compiler's trace flow analysis to decide whether to
2101 * actually assign this out here, or punt it into the only block where it is
2102 * used. Doing it out here is DRY on the condition logic.
2107 gv = PL_last_in_gv = MUTABLE_GV(POPs); /* eof(FH) */
2113 if (PL_op->op_flags & OPf_SPECIAL) {
2114 gv = PL_last_in_gv = GvEGVx(PL_argvgv); /* eof() - ARGV magic */
2118 gv = PL_last_in_gv; /* eof */
2126 if ((io = GvIO(gv)) && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) {
2127 return tied_method1(SV_CONST(EOF), SP, MUTABLE_SV(io), mg, newSVuv(which));
2130 if (!MAXARG && (PL_op->op_flags & OPf_SPECIAL)) { /* eof() */
2131 if (io && !IoIFP(io)) {
2132 if ((IoFLAGS(io) & IOf_START) && av_tindex(GvAVn(gv)) < 0) {
2135 IoFLAGS(io) &= ~IOf_START;
2136 do_open6(gv, "-", 1, NULL, NULL, 0);
2144 *svp = newSVpvs("-");
2146 else if (!nextargv(gv, FALSE))
2151 PUSHs(boolSV(do_eof(gv)));
2161 if (MAXARG != 0 && (TOPs || POPs))
2162 PL_last_in_gv = MUTABLE_GV(POPs);
2169 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
2171 return tied_method0(SV_CONST(TELL), SP, MUTABLE_SV(io), mg);
2176 SETERRNO(EBADF,RMS_IFI);
2181 #if LSEEKSIZE > IVSIZE
2182 PUSHn( (NV)do_tell(gv) );
2184 PUSHi( (IV)do_tell(gv) );
2190 /* also used for: pp_seek() */
2195 const int whence = POPi;
2196 #if LSEEKSIZE > IVSIZE
2197 const Off_t offset = (Off_t)SvNVx(POPs);
2199 const Off_t offset = (Off_t)SvIVx(POPs);
2202 GV * const gv = PL_last_in_gv = MUTABLE_GV(POPs);
2203 IO *const io = GvIO(gv);
2206 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
2208 #if LSEEKSIZE > IVSIZE
2209 SV *const offset_sv = newSVnv((NV) offset);
2211 SV *const offset_sv = newSViv(offset);
2214 return tied_method2(SV_CONST(SEEK), SP, MUTABLE_SV(io), mg, offset_sv,
2219 if (PL_op->op_type == OP_SEEK)
2220 PUSHs(boolSV(do_seek(gv, offset, whence)));
2222 const Off_t sought = do_sysseek(gv, offset, whence);
2224 PUSHs(&PL_sv_undef);
2226 SV* const sv = sought ?
2227 #if LSEEKSIZE > IVSIZE
2232 : newSVpvn(zero_but_true, ZBTLEN);
2242 /* There seems to be no consensus on the length type of truncate()
2243 * and ftruncate(), both off_t and size_t have supporters. In
2244 * general one would think that when using large files, off_t is
2245 * at least as wide as size_t, so using an off_t should be okay. */
2246 /* XXX Configure probe for the length type of *truncate() needed XXX */
2249 #if Off_t_size > IVSIZE
2254 /* Checking for length < 0 is problematic as the type might or
2255 * might not be signed: if it is not, clever compilers will moan. */
2256 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
2259 SV * const sv = POPs;
2264 if (PL_op->op_flags & OPf_SPECIAL
2265 ? (tmpgv = gv_fetchsv(sv, 0, SVt_PVIO), 1)
2266 : !!(tmpgv = MAYBE_DEREF_GV(sv)) ) {
2273 TAINT_PROPER("truncate");
2274 if (!(fp = IoIFP(io))) {
2278 int fd = PerlIO_fileno(fp);
2280 SETERRNO(EBADF,RMS_IFI);
2284 SETERRNO(EINVAL, LIB_INVARG);
2289 if (ftruncate(fd, len) < 0)
2291 if (my_chsize(fd, len) < 0)
2299 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2300 io = MUTABLE_IO(SvRV(sv)); /* *main::FRED{IO} for example */
2301 goto do_ftruncate_io;
2304 const char * const name = SvPV_nomg_const_nolen(sv);
2305 TAINT_PROPER("truncate");
2307 if (truncate(name, len) < 0)
2314 #if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE)
2315 mode |= O_LARGEFILE; /* Transparently largefiley. */
2318 /* On open(), the Win32 CRT tries to seek around text
2319 * files using 32-bit offsets, which causes the open()
2320 * to fail on large files, so open in binary mode.
2324 tmpfd = PerlLIO_open_cloexec(name, mode);
2329 if (my_chsize(tmpfd, len) < 0)
2331 PerlLIO_close(tmpfd);
2340 SETERRNO(EBADF,RMS_IFI);
2346 /* also used for: pp_fcntl() */
2351 SV * const argsv = POPs;
2352 const unsigned int func = POPu;
2354 GV * const gv = MUTABLE_GV(POPs);
2355 IO * const io = GvIOn(gv);
2361 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
2365 if (SvPOK(argsv) || !SvNIOK(argsv)) {
2368 s = SvPV_force(argsv, len);
2369 need = IOCPARM_LEN(func);
2371 s = Sv_Grow(argsv, need + 1);
2372 SvCUR_set(argsv, need);
2375 s[SvCUR(argsv)] = 17; /* a little sanity check here */
2378 retval = SvIV(argsv);
2379 s = INT2PTR(char*,retval); /* ouch */
2382 optype = PL_op->op_type;
2383 TAINT_PROPER(PL_op_desc[optype]);
2385 if (optype == OP_IOCTL)
2387 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
2389 DIE(aTHX_ "ioctl is not implemented");
2393 DIE(aTHX_ "fcntl is not implemented");
2394 #elif defined(OS2) && defined(__EMX__)
2395 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
2397 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
2400 #if defined(HAS_IOCTL) || defined(HAS_FCNTL)
2402 if (s[SvCUR(argsv)] != 17)
2403 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
2405 s[SvCUR(argsv)] = 0; /* put our null back */
2406 SvSETMAGIC(argsv); /* Assume it has changed */
2415 PUSHp(zero_but_true, ZBTLEN);
2426 const int argtype = POPi;
2427 GV * const gv = MUTABLE_GV(POPs);
2428 IO *const io = GvIO(gv);
2429 PerlIO *const fp = io ? IoIFP(io) : NULL;
2431 /* XXX Looks to me like io is always NULL at this point */
2433 (void)PerlIO_flush(fp);
2434 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
2439 SETERRNO(EBADF,RMS_IFI);
2444 DIE(aTHX_ PL_no_func, "flock");
2455 const int protocol = POPi;
2456 const int type = POPi;
2457 const int domain = POPi;
2458 GV * const gv = MUTABLE_GV(POPs);
2459 IO * const io = GvIOn(gv);
2463 do_close(gv, FALSE);
2465 TAINT_PROPER("socket");
2466 fd = PerlSock_socket_cloexec(domain, type, protocol);
2470 IoIFP(io) = PerlIO_fdopen(fd, "r" SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2471 IoOFP(io) = PerlIO_fdopen(fd, "w" SOCKET_OPEN_MODE);
2472 IoTYPE(io) = IoTYPE_SOCKET;
2473 if (!IoIFP(io) || !IoOFP(io)) {
2474 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2475 if (IoOFP(io)) PerlIO_close(IoOFP(io));
2476 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
2486 #if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
2489 const int protocol = POPi;
2490 const int type = POPi;
2491 const int domain = POPi;
2493 GV * const gv2 = MUTABLE_GV(POPs);
2494 IO * const io2 = GvIOn(gv2);
2495 GV * const gv1 = MUTABLE_GV(POPs);
2496 IO * const io1 = GvIOn(gv1);
2499 do_close(gv1, FALSE);
2501 do_close(gv2, FALSE);
2503 TAINT_PROPER("socketpair");
2504 if (PerlSock_socketpair_cloexec(domain, type, protocol, fd) < 0)
2506 IoIFP(io1) = PerlIO_fdopen(fd[0], "r" SOCKET_OPEN_MODE);
2507 IoOFP(io1) = PerlIO_fdopen(fd[0], "w" SOCKET_OPEN_MODE);
2508 IoTYPE(io1) = IoTYPE_SOCKET;
2509 IoIFP(io2) = PerlIO_fdopen(fd[1], "r" SOCKET_OPEN_MODE);
2510 IoOFP(io2) = PerlIO_fdopen(fd[1], "w" SOCKET_OPEN_MODE);
2511 IoTYPE(io2) = IoTYPE_SOCKET;
2512 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
2513 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2514 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
2515 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
2516 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2517 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
2518 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
2524 DIE(aTHX_ PL_no_sock_func, "socketpair");
2530 /* also used for: pp_connect() */
2535 SV * const addrsv = POPs;
2536 /* OK, so on what platform does bind modify addr? */
2538 GV * const gv = MUTABLE_GV(POPs);
2539 IO * const io = GvIOn(gv);
2546 fd = PerlIO_fileno(IoIFP(io));
2550 addr = SvPV_const(addrsv, len);
2551 op_type = PL_op->op_type;
2552 TAINT_PROPER(PL_op_desc[op_type]);
2553 if ((op_type == OP_BIND
2554 ? PerlSock_bind(fd, (struct sockaddr *)addr, len)
2555 : PerlSock_connect(fd, (struct sockaddr *)addr, len))
2563 SETERRNO(EBADF,SS_IVCHAN);
2570 const int backlog = POPi;
2571 GV * const gv = MUTABLE_GV(POPs);
2572 IO * const io = GvIOn(gv);
2577 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
2584 SETERRNO(EBADF,SS_IVCHAN);
2592 char namebuf[MAXPATHLEN];
2593 #if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
2594 Sock_size_t len = sizeof (struct sockaddr_in);
2596 Sock_size_t len = sizeof namebuf;
2598 GV * const ggv = MUTABLE_GV(POPs);
2599 GV * const ngv = MUTABLE_GV(POPs);
2602 IO * const gstio = GvIO(ggv);
2603 if (!gstio || !IoIFP(gstio))
2607 fd = PerlSock_accept_cloexec(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
2610 /* Some platforms indicate zero length when an AF_UNIX client is
2611 * not bound. Simulate a non-zero-length sockaddr structure in
2613 namebuf[0] = 0; /* sun_len */
2614 namebuf[1] = AF_UNIX; /* sun_family */
2622 do_close(ngv, FALSE);
2623 IoIFP(nstio) = PerlIO_fdopen(fd, "r" SOCKET_OPEN_MODE);
2624 IoOFP(nstio) = PerlIO_fdopen(fd, "w" SOCKET_OPEN_MODE);
2625 IoTYPE(nstio) = IoTYPE_SOCKET;
2626 if (!IoIFP(nstio) || !IoOFP(nstio)) {
2627 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2628 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
2629 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
2633 #ifdef __SCO_VERSION__
2634 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
2637 PUSHp(namebuf, len);
2641 report_evil_fh(ggv);
2642 SETERRNO(EBADF,SS_IVCHAN);
2652 const int how = POPi;
2653 GV * const gv = MUTABLE_GV(POPs);
2654 IO * const io = GvIOn(gv);
2659 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
2664 SETERRNO(EBADF,SS_IVCHAN);
2669 /* also used for: pp_gsockopt() */
2674 const int optype = PL_op->op_type;
2675 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
2676 const unsigned int optname = (unsigned int) POPi;
2677 const unsigned int lvl = (unsigned int) POPi;
2678 GV * const gv = MUTABLE_GV(POPs);
2679 IO * const io = GvIOn(gv);
2686 fd = PerlIO_fileno(IoIFP(io));
2692 (void)SvPOK_only(sv);
2696 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
2699 /* XXX Configure test: does getsockopt set the length properly? */
2708 #if defined(__SYMBIAN32__)
2709 # define SETSOCKOPT_OPTION_VALUE_T void *
2711 # define SETSOCKOPT_OPTION_VALUE_T const char *
2713 /* XXX TODO: We need to have a proper type (a Configure probe,
2714 * etc.) for what the C headers think of the third argument of
2715 * setsockopt(), the option_value read-only buffer: is it
2716 * a "char *", or a "void *", const or not. Some compilers
2717 * don't take kindly to e.g. assuming that "char *" implicitly
2718 * promotes to a "void *", or to explicitly promoting/demoting
2719 * consts to non/vice versa. The "const void *" is the SUS
2720 * definition, but that does not fly everywhere for the above
2722 SETSOCKOPT_OPTION_VALUE_T buf;
2726 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2730 aint = (int)SvIV(sv);
2731 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
2734 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
2744 SETERRNO(EBADF,SS_IVCHAN);
2751 /* also used for: pp_getsockname() */
2756 const int optype = PL_op->op_type;
2757 GV * const gv = MUTABLE_GV(POPs);
2758 IO * const io = GvIOn(gv);
2766 sv = sv_2mortal(newSV(257));
2767 (void)SvPOK_only(sv);
2771 fd = PerlIO_fileno(IoIFP(io));
2775 case OP_GETSOCKNAME:
2776 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2779 case OP_GETPEERNAME:
2780 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2782 #if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2784 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";
2785 /* If the call succeeded, make sure we don't have a zeroed port/addr */
2786 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2787 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
2788 sizeof(u_short) + sizeof(struct in_addr))) {
2795 #ifdef BOGUS_GETNAME_RETURN
2796 /* Interactive Unix, getpeername() and getsockname()
2797 does not return valid namelen */
2798 if (len == BOGUS_GETNAME_RETURN)
2799 len = sizeof(struct sockaddr);
2808 SETERRNO(EBADF,SS_IVCHAN);
2817 /* also used for: pp_lstat() */
2828 if (PL_op->op_flags & OPf_REF ? (gv = cGVOP_gv, 1)
2829 : !!(sv=POPs, gv = MAYBE_DEREF_GV(sv))) {
2830 if (PL_op->op_type == OP_LSTAT) {
2831 if (gv != PL_defgv) {
2832 do_fstat_warning_check:
2833 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
2834 "lstat() on filehandle%s%" SVf,
2837 ? sv_2mortal(newSVhek(GvENAME_HEK(gv)))
2839 } else if (PL_laststype != OP_LSTAT)
2840 /* diag_listed_as: The stat preceding %s wasn't an lstat */
2841 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
2844 if (gv == PL_defgv) {
2845 if (PL_laststatval < 0)
2846 SETERRNO(EBADF,RMS_IFI);
2849 PL_laststype = OP_STAT;
2850 PL_statgv = gv ? gv : (GV *)io;
2851 SvPVCLEAR(PL_statname);
2857 int fd = PerlIO_fileno(IoIFP(io));
2860 PL_laststatval = -1;
2861 SETERRNO(EBADF,RMS_IFI);
2863 PL_laststatval = PerlLIO_fstat(fd, &PL_statcache);
2865 } else if (IoDIRP(io)) {
2867 PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache);
2870 PL_laststatval = -1;
2871 SETERRNO(EBADF,RMS_IFI);
2875 PL_laststatval = -1;
2876 SETERRNO(EBADF,RMS_IFI);
2880 if (PL_laststatval < 0) {
2888 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2889 io = MUTABLE_IO(SvRV(sv));
2890 if (PL_op->op_type == OP_LSTAT)
2891 goto do_fstat_warning_check;
2892 goto do_fstat_have_io;
2894 SvTAINTED_off(PL_statname); /* previous tainting irrelevant */
2895 temp = SvPV_nomg_const(sv, len);
2896 sv_setpv(PL_statname, temp);
2898 PL_laststype = PL_op->op_type;
2899 file = SvPV_nolen_const(PL_statname);
2900 if (!IS_SAFE_PATHNAME(temp, len, OP_NAME(PL_op))) {
2901 PL_laststatval = -1;
2903 else if (PL_op->op_type == OP_LSTAT)
2904 PL_laststatval = PerlLIO_lstat(file, &PL_statcache);
2906 PL_laststatval = PerlLIO_stat(file, &PL_statcache);
2907 if (PL_laststatval < 0) {
2908 if (ckWARN(WARN_NEWLINE) && should_warn_nl(file)) {
2909 /* PL_warn_nl is constant */
2910 GCC_DIAG_IGNORE_STMT(-Wformat-nonliteral);
2911 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
2912 GCC_DIAG_RESTORE_STMT;
2919 if (gimme != G_ARRAY) {
2920 if (gimme != G_VOID)
2921 XPUSHs(boolSV(max));
2927 mPUSHi(PL_statcache.st_dev);
2930 * We try to represent st_ino as a native IV or UV where
2931 * possible, but fall back to a decimal string where
2932 * necessary. The code to generate these decimal strings
2933 * is quite obtuse, because (a) we're portable to non-POSIX
2934 * platforms where st_ino might be signed; (b) we didn't
2935 * necessarily detect at Configure time whether st_ino is
2936 * signed; (c) we're portable to non-POSIX platforms where
2937 * ino_t isn't defined, so have no name for the type of
2938 * st_ino; and (d) sprintf() doesn't necessarily support
2939 * integers as large as st_ino.
2943 CLANG_DIAG_IGNORE_STMT(-Wtautological-compare);
2944 GCC_DIAG_IGNORE_STMT(-Wtype-limits);
2945 neg = PL_statcache.st_ino < 0;
2946 GCC_DIAG_RESTORE_STMT;
2947 CLANG_DIAG_RESTORE_STMT;
2949 s.st_ino = (IV)PL_statcache.st_ino;
2950 if (LIKELY(s.st_ino == PL_statcache.st_ino)) {
2953 char buf[sizeof(s.st_ino)*3+1], *p;
2954 s.st_ino = PL_statcache.st_ino;
2955 for (p = buf + sizeof(buf); p != buf+1; ) {
2957 t.st_ino = s.st_ino / 10;
2958 *--p = '0' + (int)(t.st_ino*10 - s.st_ino);
2959 s.st_ino = t.st_ino;
2964 mPUSHp(p, buf+sizeof(buf) - p);
2967 s.st_ino = (UV)PL_statcache.st_ino;
2968 if (LIKELY(s.st_ino == PL_statcache.st_ino)) {
2971 char buf[sizeof(s.st_ino)*3], *p;
2972 s.st_ino = PL_statcache.st_ino;
2973 for (p = buf + sizeof(buf); p != buf; ) {
2975 t.st_ino = s.st_ino / 10;
2976 *--p = '0' + (int)(s.st_ino - t.st_ino*10);
2977 s.st_ino = t.st_ino;
2981 mPUSHp(p, buf+sizeof(buf) - p);
2985 mPUSHu(PL_statcache.st_mode);
2986 mPUSHu(PL_statcache.st_nlink);
2988 sv_setuid(PUSHmortal, PL_statcache.st_uid);
2989 sv_setgid(PUSHmortal, PL_statcache.st_gid);
2991 #ifdef USE_STAT_RDEV
2992 mPUSHi(PL_statcache.st_rdev);
2994 PUSHs(newSVpvs_flags("", SVs_TEMP));
2996 #if Off_t_size > IVSIZE
2997 mPUSHn(PL_statcache.st_size);
2999 mPUSHi(PL_statcache.st_size);
3002 mPUSHn(PL_statcache.st_atime);
3003 mPUSHn(PL_statcache.st_mtime);
3004 mPUSHn(PL_statcache.st_ctime);
3006 mPUSHi(PL_statcache.st_atime);
3007 mPUSHi(PL_statcache.st_mtime);
3008 mPUSHi(PL_statcache.st_ctime);
3010 #ifdef USE_STAT_BLOCKS
3011 mPUSHu(PL_statcache.st_blksize);
3012 mPUSHu(PL_statcache.st_blocks);
3014 PUSHs(newSVpvs_flags("", SVs_TEMP));
3015 PUSHs(newSVpvs_flags("", SVs_TEMP));
3021 /* All filetest ops avoid manipulating the perl stack pointer in their main
3022 bodies (since commit d2c4d2d1e22d3125), and return using either
3023 S_ft_return_false() or S_ft_return_true(). These two helper functions are
3024 the only two which manipulate the perl stack. To ensure that no stack
3025 manipulation macros are used, the filetest ops avoid defining a local copy
3026 of the stack pointer with dSP. */
3028 /* If the next filetest is stacked up with this one
3029 (PL_op->op_private & OPpFT_STACKING), we leave
3030 the original argument on the stack for success,
3031 and skip the stacked operators on failure.
3032 The next few macros/functions take care of this.
3036 S_ft_return_false(pTHX_ SV *ret) {
3040 if (PL_op->op_flags & OPf_REF) XPUSHs(ret);
3044 if (PL_op->op_private & OPpFT_STACKING) {
3045 while (next && OP_IS_FILETEST(next->op_type)
3046 && next->op_private & OPpFT_STACKED)
3047 next = next->op_next;
3052 PERL_STATIC_INLINE OP *
3053 S_ft_return_true(pTHX_ SV *ret) {
3055 if (PL_op->op_flags & OPf_REF)
3056 XPUSHs(PL_op->op_private & OPpFT_STACKING ? (SV *)cGVOP_gv : (ret));
3057 else if (!(PL_op->op_private & OPpFT_STACKING))
3063 #define FT_RETURNNO return S_ft_return_false(aTHX_ &PL_sv_no)
3064 #define FT_RETURNUNDEF return S_ft_return_false(aTHX_ &PL_sv_undef)
3065 #define FT_RETURNYES return S_ft_return_true(aTHX_ &PL_sv_yes)
3067 #define tryAMAGICftest_MG(chr) STMT_START { \
3068 if ( (SvFLAGS(*PL_stack_sp) & (SVf_ROK|SVs_GMG)) \
3069 && PL_op->op_flags & OPf_KIDS) { \
3070 OP *next = S_try_amagic_ftest(aTHX_ chr); \
3071 if (next) return next; \
3076 S_try_amagic_ftest(pTHX_ char chr) {
3077 SV *const arg = *PL_stack_sp;
3080 if (!(PL_op->op_private & OPpFT_STACKING)) SvGETMAGIC(arg);
3084 const char tmpchr = chr;
3085 SV * const tmpsv = amagic_call(arg,
3086 newSVpvn_flags(&tmpchr, 1, SVs_TEMP),
3087 ftest_amg, AMGf_unary);
3092 return SvTRUE(tmpsv)
3093 ? S_ft_return_true(aTHX_ tmpsv) : S_ft_return_false(aTHX_ tmpsv);
3099 /* also used for: pp_fteexec() pp_fteread() pp_ftewrite() pp_ftrexec()
3105 /* Not const, because things tweak this below. Not bool, because there's
3106 no guarantee that OPpFT_ACCESS is <= CHAR_MAX */
3107 #if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
3108 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
3109 /* Giving some sort of initial value silences compilers. */
3111 int access_mode = R_OK;
3113 int access_mode = 0;
3116 /* access_mode is never used, but leaving use_access in makes the
3117 conditional compiling below much clearer. */
3120 Mode_t stat_mode = S_IRUSR;
3122 bool effective = FALSE;
3125 switch (PL_op->op_type) {
3126 case OP_FTRREAD: opchar = 'R'; break;
3127 case OP_FTRWRITE: opchar = 'W'; break;
3128 case OP_FTREXEC: opchar = 'X'; break;
3129 case OP_FTEREAD: opchar = 'r'; break;
3130 case OP_FTEWRITE: opchar = 'w'; break;
3131 case OP_FTEEXEC: opchar = 'x'; break;
3133 tryAMAGICftest_MG(opchar);
3135 switch (PL_op->op_type) {
3137 #if !(defined(HAS_ACCESS) && defined(R_OK))
3143 #if defined(HAS_ACCESS) && defined(W_OK)
3148 stat_mode = S_IWUSR;
3152 #if defined(HAS_ACCESS) && defined(X_OK)
3157 stat_mode = S_IXUSR;
3161 #ifdef PERL_EFF_ACCESS
3164 stat_mode = S_IWUSR;
3168 #ifndef PERL_EFF_ACCESS
3175 #ifdef PERL_EFF_ACCESS
3180 stat_mode = S_IXUSR;
3186 #if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
3188 const char *name = SvPV(*PL_stack_sp, len);
3189 if (!IS_SAFE_PATHNAME(name, len, OP_NAME(PL_op))) {
3192 else if (effective) {
3193 # ifdef PERL_EFF_ACCESS
3194 result = PERL_EFF_ACCESS(name, access_mode);
3196 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
3202 result = access(name, access_mode);
3204 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
3215 result = my_stat_flags(0);
3218 if (cando(stat_mode, effective, &PL_statcache))
3224 /* also used for: pp_ftatime() pp_ftctime() pp_ftmtime() pp_ftsize() */
3229 const int op_type = PL_op->op_type;
3233 case OP_FTIS: opchar = 'e'; break;
3234 case OP_FTSIZE: opchar = 's'; break;
3235 case OP_FTMTIME: opchar = 'M'; break;
3236 case OP_FTCTIME: opchar = 'C'; break;
3237 case OP_FTATIME: opchar = 'A'; break;
3239 tryAMAGICftest_MG(opchar);
3241 result = my_stat_flags(0);
3244 if (op_type == OP_FTIS)
3247 /* You can't dTARGET inside OP_FTIS, because you'll get
3248 "panic: pad_sv po" - the op is not flagged to have a target. */
3252 #if Off_t_size > IVSIZE
3253 sv_setnv(TARG, (NV)PL_statcache.st_size);
3255 sv_setiv(TARG, (IV)PL_statcache.st_size);
3260 ((NV)PL_basetime - PL_statcache.st_mtime) / 86400.0 );
3264 ((NV)PL_basetime - PL_statcache.st_atime) / 86400.0 );
3268 ((NV)PL_basetime - PL_statcache.st_ctime) / 86400.0 );
3272 return SvTRUE_nomg_NN(TARG)
3273 ? S_ft_return_true(aTHX_ TARG) : S_ft_return_false(aTHX_ TARG);
3278 /* also used for: pp_ftblk() pp_ftchr() pp_ftdir() pp_fteowned()
3279 * pp_ftfile() pp_ftpipe() pp_ftsgid() pp_ftsock()
3280 * pp_ftsuid() pp_ftsvtx() pp_ftzero() */
3287 switch (PL_op->op_type) {
3288 case OP_FTROWNED: opchar = 'O'; break;
3289 case OP_FTEOWNED: opchar = 'o'; break;
3290 case OP_FTZERO: opchar = 'z'; break;
3291 case OP_FTSOCK: opchar = 'S'; break;
3292 case OP_FTCHR: opchar = 'c'; break;
3293 case OP_FTBLK: opchar = 'b'; break;
3294 case OP_FTFILE: opchar = 'f'; break;
3295 case OP_FTDIR: opchar = 'd'; break;
3296 case OP_FTPIPE: opchar = 'p'; break;
3297 case OP_FTSUID: opchar = 'u'; break;
3298 case OP_FTSGID: opchar = 'g'; break;
3299 case OP_FTSVTX: opchar = 'k'; break;
3301 tryAMAGICftest_MG(opchar);
3303 result = my_stat_flags(0);
3306 switch (PL_op->op_type) {
3308 if (PL_statcache.st_uid == PerlProc_getuid())
3312 if (PL_statcache.st_uid == PerlProc_geteuid())
3316 if (PL_statcache.st_size == 0)
3320 if (S_ISSOCK(PL_statcache.st_mode))
3324 if (S_ISCHR(PL_statcache.st_mode))
3328 if (S_ISBLK(PL_statcache.st_mode))
3332 if (S_ISREG(PL_statcache.st_mode))
3336 if (S_ISDIR(PL_statcache.st_mode))
3340 if (S_ISFIFO(PL_statcache.st_mode))
3345 if (PL_statcache.st_mode & S_ISUID)
3351 if (PL_statcache.st_mode & S_ISGID)
3357 if (PL_statcache.st_mode & S_ISVTX)
3369 tryAMAGICftest_MG('l');
3370 result = my_lstat_flags(0);
3374 if (S_ISLNK(PL_statcache.st_mode))
3387 tryAMAGICftest_MG('t');
3389 if (PL_op->op_flags & OPf_REF)
3392 SV *tmpsv = *PL_stack_sp;
3393 if (!(gv = MAYBE_DEREF_GV_nomg(tmpsv))) {
3394 name = SvPV_nomg(tmpsv, namelen);
3395 gv = gv_fetchpvn_flags(name, namelen, SvUTF8(tmpsv), SVt_PVIO);
3399 if (GvIO(gv) && IoIFP(GvIOp(gv)))
3400 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
3401 else if (name && isDIGIT(*name) && grok_atoUV(name, &uv, NULL) && uv <= PERL_INT_MAX)
3406 SETERRNO(EBADF,RMS_IFI);
3409 if (PerlLIO_isatty(fd))
3415 /* also used for: pp_ftbinary() */
3428 const U8 * first_variant;
3430 tryAMAGICftest_MG(PL_op->op_type == OP_FTTEXT ? 'T' : 'B');
3432 if (PL_op->op_flags & OPf_REF)
3434 else if ((PL_op->op_private & (OPpFT_STACKED|OPpFT_AFTER_t))
3439 gv = MAYBE_DEREF_GV_nomg(sv);
3443 if (gv == PL_defgv) {
3445 io = SvTYPE(PL_statgv) == SVt_PVIO
3449 goto really_filename;
3454 SvPVCLEAR(PL_statname);
3455 io = GvIO(PL_statgv);
3457 PL_laststatval = -1;
3458 PL_laststype = OP_STAT;
3459 if (io && IoIFP(io)) {
3461 if (! PerlIO_has_base(IoIFP(io)))
3462 DIE(aTHX_ "-T and -B not implemented on filehandles");
3463 fd = PerlIO_fileno(IoIFP(io));
3465 SETERRNO(EBADF,RMS_IFI);
3468 PL_laststatval = PerlLIO_fstat(fd, &PL_statcache);
3469 if (PL_laststatval < 0)
3471 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
3472 if (PL_op->op_type == OP_FTTEXT)
3477 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
3478 i = PerlIO_getc(IoIFP(io));
3480 (void)PerlIO_ungetc(IoIFP(io),i);
3482 /* null file is anything */
3485 len = PerlIO_get_bufsiz(IoIFP(io));
3486 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
3487 /* sfio can have large buffers - limit to 512 */
3492 SETERRNO(EBADF,RMS_IFI);
3494 SETERRNO(EBADF,RMS_IFI);
3505 temp = SvPV_nomg_const(sv, temp_len);
3506 sv_setpv(PL_statname, temp);
3507 if (!IS_SAFE_PATHNAME(temp, temp_len, OP_NAME(PL_op))) {
3508 PL_laststatval = -1;
3509 PL_laststype = OP_STAT;
3513 file = SvPVX_const(PL_statname);
3515 if (!(fp = PerlIO_open(file, "r"))) {
3517 PL_laststatval = -1;
3518 PL_laststype = OP_STAT;
3520 if (ckWARN(WARN_NEWLINE) && should_warn_nl(file)) {
3521 /* PL_warn_nl is constant */
3522 GCC_DIAG_IGNORE_STMT(-Wformat-nonliteral);
3523 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
3524 GCC_DIAG_RESTORE_STMT;
3528 PL_laststype = OP_STAT;
3529 fd = PerlIO_fileno(fp);
3531 (void)PerlIO_close(fp);
3532 SETERRNO(EBADF,RMS_IFI);
3535 PL_laststatval = PerlLIO_fstat(fd, &PL_statcache);
3536 if (PL_laststatval < 0) {
3538 (void)PerlIO_close(fp);
3542 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, NULL);
3543 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3544 (void)PerlIO_close(fp);
3546 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
3547 FT_RETURNNO; /* special case NFS directories */
3548 FT_RETURNYES; /* null file is anything */
3553 /* now scan s to look for textiness */
3555 #if defined(DOSISH) || defined(USEMYBINMODE)
3556 /* ignore trailing ^Z on short files */
3557 if (len && len < (I32)sizeof(tbuf) && tbuf[len-1] == 26)
3562 if (! is_utf8_invariant_string_loc((U8 *) s, len, &first_variant)) {
3564 /* Here contains a variant under UTF-8 . See if the entire string is
3566 if (is_utf8_fixed_width_buf_flags(first_variant,
3567 len - ((char *) first_variant - (char *) s),
3570 if (PL_op->op_type == OP_FTTEXT) {
3579 /* Here, is not UTF-8 or is entirely ASCII. Look through the buffer for
3580 * things that wouldn't be in ASCII text or rich ASCII text. Count these
3582 for (i = 0; i < len; i++, s++) {
3583 if (!*s) { /* null never allowed in text */
3587 #ifdef USE_LOCALE_CTYPE
3588 if (IN_LC_RUNTIME(LC_CTYPE)) {
3589 if ( isPRINT_LC(*s) || isSPACE_LC(*s)) {
3596 /* VT occurs so rarely in text, that we consider it odd */
3597 || (isSPACE_A(*s) && *s != VT_NATIVE)
3599 /* But there is a fair amount of backspaces and escapes in
3602 || *s == ESC_NATIVE)
3609 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
3620 const char *tmps = NULL;
3624 SV * const sv = POPs;
3625 if (PL_op->op_flags & OPf_SPECIAL) {
3626 gv = gv_fetchsv(sv, 0, SVt_PVIO);
3628 if (ckWARN(WARN_UNOPENED)) {
3629 Perl_warner(aTHX_ packWARN(WARN_UNOPENED),
3630 "chdir() on unopened filehandle %" SVf, sv);
3632 SETERRNO(EBADF,RMS_IFI);
3634 TAINT_PROPER("chdir");
3638 else if (!(gv = MAYBE_DEREF_GV(sv)))
3639 tmps = SvPV_nomg_const_nolen(sv);
3642 HV * const table = GvHVn(PL_envgv);
3646 if ( (svp = hv_fetchs(table, "HOME", FALSE))
3647 || (svp = hv_fetchs(table, "LOGDIR", FALSE))
3649 || (svp = hv_fetchs(table, "SYS$LOGIN", FALSE))
3653 tmps = SvPV_nolen_const(*svp);
3657 SETERRNO(EINVAL, LIB_INVARG);
3658 TAINT_PROPER("chdir");
3663 TAINT_PROPER("chdir");
3666 IO* const io = GvIO(gv);
3669 PUSHi(fchdir(my_dirfd(IoDIRP(io))) >= 0);
3670 } else if (IoIFP(io)) {
3671 int fd = PerlIO_fileno(IoIFP(io));
3675 PUSHi(fchdir(fd) >= 0);
3685 DIE(aTHX_ PL_no_func, "fchdir");
3689 PUSHi( PerlDir_chdir(tmps) >= 0 );
3691 /* Clear the DEFAULT element of ENV so we'll get the new value
3693 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
3700 SETERRNO(EBADF,RMS_IFI);
3707 /* also used for: pp_chmod() pp_kill() pp_unlink() pp_utime() */
3711 dSP; dMARK; dTARGET;
3712 const I32 value = (I32)apply(PL_op->op_type, MARK, SP);
3723 char * const tmps = POPpx;
3724 TAINT_PROPER("chroot");
3725 PUSHi( chroot(tmps) >= 0 );
3728 DIE(aTHX_ PL_no_func, "chroot");
3739 const char * const tmps2 = POPpconstx;
3740 const char * const tmps = SvPV_nolen_const(TOPs);
3741 TAINT_PROPER("rename");
3743 anum = PerlLIO_rename(tmps, tmps2);
3745 if (!(anum = PerlLIO_stat(tmps, &statbuf))) {
3746 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3749 if (PerlProc_geteuid() || PerlLIO_stat(tmps2, &statbuf) < 0 || !S_ISDIR(statbuf.st_mode))
3750 (void)UNLINK(tmps2);
3751 if (!(anum = link(tmps, tmps2)))
3752 anum = UNLINK(tmps);
3761 /* also used for: pp_symlink() */
3763 #if defined(HAS_LINK) || defined(HAS_SYMLINK)
3767 const int op_type = PL_op->op_type;
3771 if (op_type == OP_LINK)
3772 DIE(aTHX_ PL_no_func, "link");
3774 # ifndef HAS_SYMLINK
3775 if (op_type == OP_SYMLINK)
3776 DIE(aTHX_ PL_no_func, "symlink");
3780 const char * const tmps2 = POPpconstx;
3781 const char * const tmps = SvPV_nolen_const(TOPs);
3782 TAINT_PROPER(PL_op_desc[op_type]);
3784 # if defined(HAS_LINK) && defined(HAS_SYMLINK)
3785 /* Both present - need to choose which. */
3786 (op_type == OP_LINK) ?
3787 PerlLIO_link(tmps, tmps2) : symlink(tmps, tmps2);
3788 # elif defined(HAS_LINK)
3789 /* Only have link, so calls to pp_symlink will have DIE()d above. */
3790 PerlLIO_link(tmps, tmps2);
3791 # elif defined(HAS_SYMLINK)
3792 /* Only have symlink, so calls to pp_link will have DIE()d above. */
3793 symlink(tmps, tmps2);
3797 SETi( result >= 0 );
3802 /* also used for: pp_symlink() */
3807 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
3817 char buf[MAXPATHLEN];
3822 /* NOTE: if the length returned by readlink() is sizeof(buf) - 1,
3823 * it is impossible to know whether the result was truncated. */
3824 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_croak(aTHX_ "Cannot open %" HEKf " as a dirhandle: it is already open as a filehandle",
4000 HEKfARG(GvENAME_HEK(gv)));
4002 PerlDir_close(IoDIRP(io));
4003 if (!(IoDIRP(io) = PerlDir_open(dirname)))
4009 SETERRNO(EBADF,RMS_DIR);
4012 DIE(aTHX_ PL_no_dir_func, "opendir");
4018 #if !defined(Direntry_t) || !defined(HAS_READDIR)
4019 DIE(aTHX_ PL_no_dir_func, "readdir");
4021 #if !defined(I_DIRENT) && !defined(VMS)
4022 Direntry_t *readdir (DIR *);
4027 const U8 gimme = GIMME_V;
4028 GV * const gv = MUTABLE_GV(POPs);
4029 const Direntry_t *dp;
4030 IO * const io = GvIOn(gv);
4033 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
4034 "readdir() attempted on invalid dirhandle %" HEKf,
4035 HEKfARG(GvENAME_HEK(gv)));
4040 dp = (Direntry_t *)PerlDir_read(IoDIRP(io));
4044 sv = newSVpvn(dp->d_name, dp->d_namlen);
4046 sv = newSVpv(dp->d_name, 0);
4048 if (!(IoFLAGS(io) & IOf_UNTAINT))
4051 } while (gimme == G_ARRAY);
4053 if (!dp && gimme != G_ARRAY)
4060 SETERRNO(EBADF,RMS_ISI);
4061 if (gimme == G_ARRAY)
4070 #if defined(HAS_TELLDIR) || defined(telldir)
4072 /* XXX does _anyone_ need this? --AD 2/20/1998 */
4073 /* XXX netbsd still seemed to.
4074 XXX HAS_TELLDIR_PROTO is new style, NEED_TELLDIR_PROTO is old style.
4075 --JHI 1999-Feb-02 */
4076 # if !defined(HAS_TELLDIR_PROTO) || defined(NEED_TELLDIR_PROTO)
4077 long telldir (DIR *);
4079 GV * const gv = MUTABLE_GV(POPs);
4080 IO * const io = GvIOn(gv);
4083 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
4084 "telldir() attempted on invalid dirhandle %" HEKf,
4085 HEKfARG(GvENAME_HEK(gv)));
4089 PUSHi( PerlDir_tell(IoDIRP(io)) );
4093 SETERRNO(EBADF,RMS_ISI);
4096 DIE(aTHX_ PL_no_dir_func, "telldir");
4102 #if defined(HAS_SEEKDIR) || defined(seekdir)
4104 const long along = POPl;
4105 GV * const gv = MUTABLE_GV(POPs);
4106 IO * const io = GvIOn(gv);
4109 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
4110 "seekdir() attempted on invalid dirhandle %" HEKf,
4111 HEKfARG(GvENAME_HEK(gv)));
4114 (void)PerlDir_seek(IoDIRP(io), along);
4119 SETERRNO(EBADF,RMS_ISI);
4122 DIE(aTHX_ PL_no_dir_func, "seekdir");
4128 #if defined(HAS_REWINDDIR) || defined(rewinddir)
4130 GV * const gv = MUTABLE_GV(POPs);
4131 IO * const io = GvIOn(gv);
4134 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
4135 "rewinddir() attempted on invalid dirhandle %" HEKf,
4136 HEKfARG(GvENAME_HEK(gv)));
4139 (void)PerlDir_rewind(IoDIRP(io));
4143 SETERRNO(EBADF,RMS_ISI);
4146 DIE(aTHX_ PL_no_dir_func, "rewinddir");
4152 #if defined(Direntry_t) && defined(HAS_READDIR)
4154 GV * const gv = MUTABLE_GV(POPs);
4155 IO * const io = GvIOn(gv);
4158 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
4159 "closedir() attempted on invalid dirhandle %" HEKf,
4160 HEKfARG(GvENAME_HEK(gv)));
4163 #ifdef VOID_CLOSEDIR
4164 PerlDir_close(IoDIRP(io));
4166 if (PerlDir_close(IoDIRP(io)) < 0) {
4167 IoDIRP(io) = 0; /* Don't try to close again--coredumps on SysV */
4176 SETERRNO(EBADF,RMS_IFI);
4179 DIE(aTHX_ PL_no_dir_func, "closedir");
4183 /* Process control. */
4190 #ifdef HAS_SIGPROCMASK
4191 sigset_t oldmask, newmask;
4195 PERL_FLUSHALL_FOR_CHILD;
4196 #ifdef HAS_SIGPROCMASK
4197 sigfillset(&newmask);
4198 sigprocmask(SIG_SETMASK, &newmask, &oldmask);
4200 childpid = PerlProc_fork();
4201 if (childpid == 0) {
4205 for (sig = 1; sig < SIG_SIZE; sig++)
4206 PL_psig_pend[sig] = 0;
4208 #ifdef HAS_SIGPROCMASK
4211 sigprocmask(SIG_SETMASK, &oldmask, NULL);
4218 #ifdef PERL_USES_PL_PIDSTATUS
4219 hv_clear(PL_pidstatus); /* no kids, so don't wait for 'em */
4224 #elif (defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)) || defined(__amigaos4__)
4229 PERL_FLUSHALL_FOR_CHILD;
4230 childpid = PerlProc_fork();
4236 DIE(aTHX_ PL_no_func, "fork");
4242 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(__LIBCATAMOUNT__)
4247 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
4248 childpid = wait4pid(-1, &argflags, 0);
4250 while ((childpid = wait4pid(-1, &argflags, 0)) == -1 &&
4255 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4256 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
4257 STATUS_NATIVE_CHILD_SET((childpid && childpid != -1) ? argflags : -1);
4259 STATUS_NATIVE_CHILD_SET((childpid > 0) ? argflags : -1);
4264 DIE(aTHX_ PL_no_func, "wait");
4270 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(__LIBCATAMOUNT__)
4272 const int optype = POPi;
4273 const Pid_t pid = TOPi;
4277 result = amigaos_waitpid(aTHX_ optype, pid, &argflags);
4278 STATUS_NATIVE_CHILD_SET((result >= 0) ? argflags : -1);
4279 result = result == 0 ? pid : -1;
4283 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
4284 result = wait4pid(pid, &argflags, optype);
4286 while ((result = wait4pid(pid, &argflags, optype)) == -1 &&
4291 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4292 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
4293 STATUS_NATIVE_CHILD_SET((result && result != -1) ? argflags : -1);
4295 STATUS_NATIVE_CHILD_SET((result > 0) ? argflags : -1);
4297 # endif /* __amigaos4__ */
4301 DIE(aTHX_ PL_no_func, "waitpid");
4307 dSP; dMARK; dORIGMARK; dTARGET;
4308 #if defined(__LIBCATAMOUNT__)
4309 PL_statusvalue = -1;
4314 # ifdef __amigaos4__
4320 while (++MARK <= SP) {
4321 SV *origsv = *MARK, *copysv;
4325 #if defined(WIN32) || defined(__VMS)
4327 * Because of a nasty platform-specific variation on the meaning
4328 * of arguments to this op, we must preserve numeric arguments
4329 * as numeric, not just retain the string value.
4331 if (SvNIOK(origsv) || SvNIOKp(origsv)) {
4332 copysv = newSV_type(SVt_PVNV);
4334 if (SvPOK(origsv) || SvPOKp(origsv)) {
4335 pv = SvPV_nomg(origsv, len);
4336 sv_setpvn(copysv, pv, len);
4339 if (SvIOK(origsv) || SvIOKp(origsv))
4340 SvIV_set(copysv, SvIVX(origsv));
4341 if (SvNOK(origsv) || SvNOKp(origsv))
4342 SvNV_set(copysv, SvNVX(origsv));
4343 SvFLAGS(copysv) |= SvFLAGS(origsv) &
4344 (SVf_IOK|SVf_NOK|SVf_POK|SVp_IOK|SVp_NOK|SVp_POK|
4345 SVf_UTF8|SVf_IVisUV);
4349 pv = SvPV_nomg(origsv, len);
4350 copysv = newSVpvn_flags(pv, len,
4351 (SvFLAGS(origsv) & SVf_UTF8) | SVs_TEMP);
4359 TAINT_PROPER("system");
4361 PERL_FLUSHALL_FOR_CHILD;
4362 #if (defined(HAS_FORK) || defined(__amigaos4__)) && !defined(VMS) && !defined(OS2) || defined(PERL_MICRO)
4365 struct UserData userdata;
4372 bool child_success = FALSE;
4373 #ifdef HAS_SIGPROCMASK
4374 sigset_t newset, oldset;
4377 if (PerlProc_pipe_cloexec(pp) >= 0)
4380 amigaos_fork_set_userdata(aTHX_
4386 pthread_create(&proc,NULL,amigaos_system_child,(void *)&userdata);
4387 child_success = proc > 0;
4389 #ifdef HAS_SIGPROCMASK
4390 sigemptyset(&newset);
4391 sigaddset(&newset, SIGCHLD);
4392 sigprocmask(SIG_BLOCK, &newset, &oldset);
4394 while ((childpid = PerlProc_fork()) == -1) {
4395 if (errno != EAGAIN) {
4400 PerlLIO_close(pp[0]);
4401 PerlLIO_close(pp[1]);
4403 #ifdef HAS_SIGPROCMASK
4404 sigprocmask(SIG_SETMASK, &oldset, NULL);
4410 child_success = childpid > 0;
4412 if (child_success) {
4413 Sigsave_t ihand,qhand; /* place to save signals during system() */
4416 #ifndef __amigaos4__
4418 PerlLIO_close(pp[1]);
4421 rsignal_save(SIGINT, (Sighandler_t) SIG_IGN, &ihand);
4422 rsignal_save(SIGQUIT, (Sighandler_t) SIG_IGN, &qhand);
4425 result = pthread_join(proc, (void **)&status);
4428 result = wait4pid(childpid, &status, 0);
4429 } while (result == -1 && errno == EINTR);
4432 #ifdef HAS_SIGPROCMASK
4433 sigprocmask(SIG_SETMASK, &oldset, NULL);
4435 (void)rsignal_restore(SIGINT, &ihand);
4436 (void)rsignal_restore(SIGQUIT, &qhand);
4438 STATUS_NATIVE_CHILD_SET(result == -1 ? -1 : status);
4444 while (n < sizeof(int)) {
4445 const SSize_t n1 = PerlLIO_read(pp[0],
4446 (void*)(((char*)&errkid)+n),
4452 PerlLIO_close(pp[0]);
4453 if (n) { /* Error */
4454 if (n != sizeof(int))
4455 DIE(aTHX_ "panic: kid popen errno read, n=%u", n);
4456 errno = errkid; /* Propagate errno from kid */
4458 /* The pipe always has something in it
4459 * so n alone is not enough. */
4463 STATUS_NATIVE_CHILD_SET(-1);
4467 XPUSHi(STATUS_CURRENT);
4470 #ifndef __amigaos4__
4471 #ifdef HAS_SIGPROCMASK
4472 sigprocmask(SIG_SETMASK, &oldset, NULL);
4475 PerlLIO_close(pp[0]);
4476 if (PL_op->op_flags & OPf_STACKED) {
4477 SV * const really = *++MARK;
4478 value = (I32)do_aexec5(really, MARK, SP, pp[1], did_pipes);
4480 else if (SP - MARK != 1)
4481 value = (I32)do_aexec5(NULL, MARK, SP, pp[1], did_pipes);
4483 value = (I32)do_exec3(SvPVx_nolen(sv_mortalcopy(*SP)), pp[1], did_pipes);
4485 #endif /* __amigaos4__ */
4488 #else /* ! FORK or VMS or OS/2 */
4491 if (PL_op->op_flags & OPf_STACKED) {
4492 SV * const really = *++MARK;
4493 # if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__) || defined(__VMS)
4494 value = (I32)do_aspawn(really, MARK, SP);
4496 value = (I32)do_aspawn(really, (void **)MARK, (void **)SP);
4499 else if (SP - MARK != 1) {
4500 # if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__) || defined(__VMS)
4501 value = (I32)do_aspawn(NULL, MARK, SP);
4503 value = (I32)do_aspawn(NULL, (void **)MARK, (void **)SP);
4507 value = (I32)do_spawn(SvPVx_nolen(sv_mortalcopy(*SP)));
4509 if (PL_statusvalue == -1) /* hint that value must be returned as is */
4511 STATUS_NATIVE_CHILD_SET(value);
4513 XPUSHi(result ? value : STATUS_CURRENT);
4514 #endif /* !FORK or VMS or OS/2 */
4521 dSP; dMARK; dORIGMARK; dTARGET;
4526 while (++MARK <= SP) {
4527 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
4532 TAINT_PROPER("exec");
4535 PERL_FLUSHALL_FOR_CHILD;
4536 if (PL_op->op_flags & OPf_STACKED) {
4537 SV * const really = *++MARK;
4538 value = (I32)do_aexec(really, MARK, SP);
4540 else if (SP - MARK != 1)
4542 value = (I32)vms_do_aexec(NULL, MARK, SP);
4544 value = (I32)do_aexec(NULL, MARK, SP);
4548 value = (I32)vms_do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
4550 value = (I32)do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
4562 XPUSHi( getppid() );
4565 DIE(aTHX_ PL_no_func, "getppid");
4575 (MAXARG < 1) ? 0 : TOPs ? SvIVx(POPs) : ((void)POPs, 0);
4578 pgrp = (I32)BSD_GETPGRP(pid);
4580 if (pid != 0 && pid != PerlProc_getpid())
4581 DIE(aTHX_ "POSIX getpgrp can't take an argument");
4587 DIE(aTHX_ PL_no_func, "getpgrp");
4597 pgrp = MAXARG == 2 && (TOPs||POPs) ? POPi : 0;
4598 if (MAXARG > 0) pid = TOPs ? TOPi : 0;
4605 TAINT_PROPER("setpgrp");
4607 SETi( BSD_SETPGRP(pid, pgrp) >= 0 );
4609 if ((pgrp != 0 && pgrp != PerlProc_getpid())
4610 || (pid != 0 && pid != PerlProc_getpid()))
4612 DIE(aTHX_ "setpgrp can't take arguments");
4614 SETi( setpgrp() >= 0 );
4615 #endif /* USE_BSDPGRP */
4618 DIE(aTHX_ PL_no_func, "setpgrp");
4623 * The glibc headers typedef __priority_which_t to an enum under C, but
4624 * under C++, it keeps it as int. -Wc++-compat doesn't know this, so we
4625 * need to explicitly cast it to shut up the warning.
4627 #if defined(__GLIBC__) && ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3) || (__GLIBC__ > 2))
4628 # define PRIORITY_WHICH_T(which) (__priority_which_t)which
4630 # define PRIORITY_WHICH_T(which) which
4635 #ifdef HAS_GETPRIORITY
4637 const int who = POPi;
4638 const int which = TOPi;
4639 SETi( getpriority(PRIORITY_WHICH_T(which), who) );
4642 DIE(aTHX_ PL_no_func, "getpriority");
4648 #ifdef HAS_SETPRIORITY
4650 const int niceval = POPi;
4651 const int who = POPi;
4652 const int which = TOPi;
4653 TAINT_PROPER("setpriority");
4654 SETi( setpriority(PRIORITY_WHICH_T(which), who, niceval) >= 0 );
4657 DIE(aTHX_ PL_no_func, "setpriority");
4661 #undef PRIORITY_WHICH_T
4669 XPUSHn( (NV)time(NULL) );
4671 XPUSHu( (UV)time(NULL) );
4680 struct tms timesbuf;
4683 (void)PerlProc_times(×buf);
4685 mPUSHn(((NV)timesbuf.tms_utime)/(NV)PL_clocktick);
4686 if (GIMME_V == G_ARRAY) {
4687 mPUSHn(((NV)timesbuf.tms_stime)/(NV)PL_clocktick);
4688 mPUSHn(((NV)timesbuf.tms_cutime)/(NV)PL_clocktick);
4689 mPUSHn(((NV)timesbuf.tms_cstime)/(NV)PL_clocktick);
4692 #elif defined(PERL_MICRO)
4696 if (GIMME_V == G_ARRAY) {
4703 DIE(aTHX_ "times not implemented");
4704 #endif /* HAS_TIMES */
4707 /* The 32 bit int year limits the times we can represent to these
4708 boundaries with a few days wiggle room to account for time zone
4711 /* Sat Jan 3 00:00:00 -2147481748 */
4712 #define TIME_LOWER_BOUND -67768100567755200.0
4713 /* Sun Dec 29 12:00:00 2147483647 */
4714 #define TIME_UPPER_BOUND 67767976233316800.0
4717 /* also used for: pp_localtime() */
4725 const char *opname = PL_op->op_type == OP_LOCALTIME ? "localtime" : "gmtime";
4726 static const char * const dayname[] =
4727 {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
4728 static const char * const monname[] =
4729 {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
4730 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
4732 if (MAXARG < 1 || (!TOPs && ((void)POPs, 1))) {
4735 when = (Time64_T)now;
4738 NV input = Perl_floor(POPn);
4739 const bool pl_isnan = Perl_isnan(input);
4740 when = (Time64_T)input;
4741 if (UNLIKELY(pl_isnan || when != input)) {
4742 /* diag_listed_as: gmtime(%f) too large */
4743 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4744 "%s(%.0" NVff ") too large", opname, input);
4752 if ( TIME_LOWER_BOUND > when ) {
4753 /* diag_listed_as: gmtime(%f) too small */
4754 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4755 "%s(%.0" NVff ") too small", opname, when);
4758 else if( when > TIME_UPPER_BOUND ) {
4759 /* diag_listed_as: gmtime(%f) too small */
4760 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4761 "%s(%.0" NVff ") too large", opname, when);
4765 if (PL_op->op_type == OP_LOCALTIME)
4766 err = Perl_localtime64_r(&when, &tmbuf);
4768 err = Perl_gmtime64_r(&when, &tmbuf);
4772 /* diag_listed_as: gmtime(%f) failed */
4773 /* XXX %lld broken for quads */
4775 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4776 "%s(%.0" NVff ") failed", opname, when);
4779 if (GIMME_V != G_ARRAY) { /* scalar context */
4786 Perl_sv_setpvf_mg(aTHX_ TARG, "%s %s %2d %02d:%02d:%02d %" IVdf,
4787 dayname[tmbuf.tm_wday],
4788 monname[tmbuf.tm_mon],
4793 (IV)tmbuf.tm_year + 1900);
4796 else { /* list context */
4802 mPUSHi(tmbuf.tm_sec);
4803 mPUSHi(tmbuf.tm_min);
4804 mPUSHi(tmbuf.tm_hour);
4805 mPUSHi(tmbuf.tm_mday);
4806 mPUSHi(tmbuf.tm_mon);
4807 mPUSHn(tmbuf.tm_year);
4808 mPUSHi(tmbuf.tm_wday);
4809 mPUSHi(tmbuf.tm_yday);
4810 mPUSHi(tmbuf.tm_isdst);
4819 /* alarm() takes an unsigned int number of seconds, and return the
4820 * unsigned int number of seconds remaining in the previous alarm
4821 * (alarms don't stack). Therefore negative return values are not
4825 /* Note that while the C library function alarm() as such has
4826 * no errors defined (or in other words, properly behaving client
4827 * code shouldn't expect any), alarm() being obsoleted by
4828 * setitimer() and often being implemented in terms of
4829 * setitimer(), can fail. */
4830 /* diag_listed_as: %s() with negative argument */
4831 Perl_ck_warner_d(aTHX_ packWARN(WARN_MISC),
4832 "alarm() with negative argument");
4833 SETERRNO(EINVAL, LIB_INVARG);
4837 unsigned int retval = alarm(anum);
4838 if ((int)retval < 0) /* Strictly speaking "cannot happen". */
4844 DIE(aTHX_ PL_no_func, "alarm");
4854 (void)time(&lasttime);
4855 if (MAXARG < 1 || (!TOPs && !POPs))
4858 const I32 duration = POPi;
4860 /* diag_listed_as: %s() with negative argument */
4861 Perl_ck_warner_d(aTHX_ packWARN(WARN_MISC),
4862 "sleep() with negative argument");
4863 SETERRNO(EINVAL, LIB_INVARG);
4864 XPUSHs(&PL_sv_zero);
4867 PerlProc_sleep((unsigned int)duration);
4871 XPUSHu((UV)(when - lasttime));
4875 /* Shared memory. */
4876 /* Merged with some message passing. */
4878 /* also used for: pp_msgrcv() pp_msgsnd() pp_semop() pp_shmread() */
4882 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4883 dSP; dMARK; dTARGET;
4884 const int op_type = PL_op->op_type;
4889 value = (I32)(do_msgsnd(MARK, SP) >= 0);
4892 value = (I32)(do_msgrcv(MARK, SP) >= 0);
4895 value = (I32)(do_semop(MARK, SP) >= 0);
4898 value = (I32)(do_shmio(op_type, MARK, SP) >= 0);
4906 return Perl_pp_semget(aTHX);
4912 /* also used for: pp_msgget() pp_shmget() */
4916 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4917 dSP; dMARK; dTARGET;
4918 const int anum = do_ipcget(PL_op->op_type, MARK, SP);
4925 DIE(aTHX_ "System V IPC is not implemented on this machine");
4929 /* also used for: pp_msgctl() pp_shmctl() */
4933 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4934 dSP; dMARK; dTARGET;
4935 const int anum = do_ipcctl(PL_op->op_type, MARK, SP);
4943 PUSHp(zero_but_true, ZBTLEN);
4947 return Perl_pp_semget(aTHX);
4951 /* I can't const this further without getting warnings about the types of
4952 various arrays passed in from structures. */
4954 S_space_join_names_mortal(pTHX_ char *const *array)
4958 if (array && *array) {
4959 target = newSVpvs_flags("", SVs_TEMP);
4961 sv_catpv(target, *array);
4964 sv_catpvs(target, " ");
4967 target = sv_mortalcopy(&PL_sv_no);
4972 /* Get system info. */
4974 /* also used for: pp_ghbyaddr() pp_ghbyname() */
4978 #if defined(HAS_GETHOSTBYNAME) || defined(HAS_GETHOSTBYADDR) || defined(HAS_GETHOSTENT)
4980 I32 which = PL_op->op_type;
4983 #ifndef HAS_GETHOST_PROTOS /* XXX Do we need individual probes? */
4984 struct hostent *gethostbyaddr(Netdb_host_t, Netdb_hlen_t, int);
4985 struct hostent *gethostbyname(Netdb_name_t);
4986 struct hostent *gethostent(void);
4988 struct hostent *hent = NULL;
4992 if (which == OP_GHBYNAME) {
4993 #ifdef HAS_GETHOSTBYNAME
4994 const char* const name = POPpbytex;
4995 hent = PerlSock_gethostbyname(name);
4997 DIE(aTHX_ PL_no_sock_func, "gethostbyname");
5000 else if (which == OP_GHBYADDR) {
5001 #ifdef HAS_GETHOSTBYADDR
5002 const int addrtype = POPi;
5003 SV * const addrsv = POPs;
5005 const char *addr = (char *)SvPVbyte(addrsv, addrlen);
5007 hent = PerlSock_gethostbyaddr(addr, (Netdb_hlen_t) addrlen, addrtype);
5009 DIE(aTHX_ PL_no_sock_func, "gethostbyaddr");
5013 #ifdef HAS_GETHOSTENT
5014 hent = PerlSock_gethostent();
5016 DIE(aTHX_ PL_no_sock_func, "gethostent");
5019 #ifdef HOST_NOT_FOUND
5021 #ifdef USE_REENTRANT_API
5022 # ifdef USE_GETHOSTENT_ERRNO
5023 h_errno = PL_reentrant_buffer->_gethostent_errno;
5026 STATUS_UNIX_SET(h_errno);
5030 if (GIMME_V != G_ARRAY) {
5031 PUSHs(sv = sv_newmortal());
5033 if (which == OP_GHBYNAME) {
5035 sv_setpvn(sv, hent->h_addr, hent->h_length);
5038 sv_setpv(sv, (char*)hent->h_name);
5044 mPUSHs(newSVpv((char*)hent->h_name, 0));
5045 PUSHs(space_join_names_mortal(hent->h_aliases));
5046 mPUSHi(hent->h_addrtype);
5047 len = hent->h_length;
5050 for (elem = hent->h_addr_list; elem && *elem; elem++) {
5051 mXPUSHp(*elem, len);
5055 mPUSHp(hent->h_addr, len);
5057 PUSHs(sv_mortalcopy(&PL_sv_no));
5062 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5066 /* also used for: pp_gnbyaddr() pp_gnbyname() */
5070 #if defined(HAS_GETNETBYNAME) || defined(HAS_GETNETBYADDR) || defined(HAS_GETNETENT)
5072 I32 which = PL_op->op_type;
5074 #ifndef HAS_GETNET_PROTOS /* XXX Do we need individual probes? */
5075 struct netent *getnetbyaddr(Netdb_net_t, int);
5076 struct netent *getnetbyname(Netdb_name_t);
5077 struct netent *getnetent(void);
5079 struct netent *nent;
5081 if (which == OP_GNBYNAME){
5082 #ifdef HAS_GETNETBYNAME
5083 const char * const name = POPpbytex;
5084 nent = PerlSock_getnetbyname(name);
5086 DIE(aTHX_ PL_no_sock_func, "getnetbyname");
5089 else if (which == OP_GNBYADDR) {
5090 #ifdef HAS_GETNETBYADDR
5091 const int addrtype = POPi;
5092 const Netdb_net_t addr = (Netdb_net_t) (U32)POPu;
5093 nent = PerlSock_getnetbyaddr(addr, addrtype);
5095 DIE(aTHX_ PL_no_sock_func, "getnetbyaddr");
5099 #ifdef HAS_GETNETENT
5100 nent = PerlSock_getnetent();
5102 DIE(aTHX_ PL_no_sock_func, "getnetent");
5105 #ifdef HOST_NOT_FOUND
5107 #ifdef USE_REENTRANT_API
5108 # ifdef USE_GETNETENT_ERRNO
5109 h_errno = PL_reentrant_buffer->_getnetent_errno;
5112 STATUS_UNIX_SET(h_errno);
5117 if (GIMME_V != G_ARRAY) {
5118 PUSHs(sv = sv_newmortal());
5120 if (which == OP_GNBYNAME)
5121 sv_setiv(sv, (IV)nent->n_net);
5123 sv_setpv(sv, nent->n_name);
5129 mPUSHs(newSVpv(nent->n_name, 0));
5130 PUSHs(space_join_names_mortal(nent->n_aliases));
5131 mPUSHi(nent->n_addrtype);
5132 mPUSHi(nent->n_net);
5137 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5142 /* also used for: pp_gpbyname() pp_gpbynumber() */
5146 #if defined(HAS_GETPROTOBYNAME) || defined(HAS_GETPROTOBYNUMBER) || defined(HAS_GETPROTOENT)
5148 I32 which = PL_op->op_type;
5150 #ifndef HAS_GETPROTO_PROTOS /* XXX Do we need individual probes? */
5151 struct protoent *getprotobyname(Netdb_name_t);
5152 struct protoent *getprotobynumber(int);
5153 struct protoent *getprotoent(void);
5155 struct protoent *pent;
5157 if (which == OP_GPBYNAME) {
5158 #ifdef HAS_GETPROTOBYNAME
5159 const char* const name = POPpbytex;
5160 pent = PerlSock_getprotobyname(name);
5162 DIE(aTHX_ PL_no_sock_func, "getprotobyname");
5165 else if (which == OP_GPBYNUMBER) {
5166 #ifdef HAS_GETPROTOBYNUMBER
5167 const int number = POPi;
5168 pent = PerlSock_getprotobynumber(number);
5170 DIE(aTHX_ PL_no_sock_func, "getprotobynumber");
5174 #ifdef HAS_GETPROTOENT
5175 pent = PerlSock_getprotoent();
5177 DIE(aTHX_ PL_no_sock_func, "getprotoent");
5181 if (GIMME_V != G_ARRAY) {
5182 PUSHs(sv = sv_newmortal());
5184 if (which == OP_GPBYNAME)
5185 sv_setiv(sv, (IV)pent->p_proto);
5187 sv_setpv(sv, pent->p_name);
5193 mPUSHs(newSVpv(pent->p_name, 0));
5194 PUSHs(space_join_names_mortal(pent->p_aliases));
5195 mPUSHi(pent->p_proto);
5200 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5205 /* also used for: pp_gsbyname() pp_gsbyport() */
5209 #if defined(HAS_GETSERVBYNAME) || defined(HAS_GETSERVBYPORT) || defined(HAS_GETSERVENT)
5211 I32 which = PL_op->op_type;
5213 #ifndef HAS_GETSERV_PROTOS /* XXX Do we need individual probes? */
5214 struct servent *getservbyname(Netdb_name_t, Netdb_name_t);
5215 struct servent *getservbyport(int, Netdb_name_t);
5216 struct servent *getservent(void);
5218 struct servent *sent;
5220 if (which == OP_GSBYNAME) {
5221 #ifdef HAS_GETSERVBYNAME
5222 const char * const proto = POPpbytex;
5223 const char * const name = POPpbytex;
5224 sent = PerlSock_getservbyname(name, (proto && !*proto) ? NULL : proto);
5226 DIE(aTHX_ PL_no_sock_func, "getservbyname");
5229 else if (which == OP_GSBYPORT) {
5230 #ifdef HAS_GETSERVBYPORT
5231 const char * const proto = POPpbytex;
5232 unsigned short port = (unsigned short)POPu;
5233 port = PerlSock_htons(port);
5234 sent = PerlSock_getservbyport(port, (proto && !*proto) ? NULL : proto);
5236 DIE(aTHX_ PL_no_sock_func, "getservbyport");
5240 #ifdef HAS_GETSERVENT
5241 sent = PerlSock_getservent();
5243 DIE(aTHX_ PL_no_sock_func, "getservent");
5247 if (GIMME_V != G_ARRAY) {
5248 PUSHs(sv = sv_newmortal());
5250 if (which == OP_GSBYNAME) {
5251 sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
5254 sv_setpv(sv, sent->s_name);
5260 mPUSHs(newSVpv(sent->s_name, 0));
5261 PUSHs(space_join_names_mortal(sent->s_aliases));
5262 mPUSHi(PerlSock_ntohs(sent->s_port));
5263 mPUSHs(newSVpv(sent->s_proto, 0));
5268 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5273 /* also used for: pp_snetent() pp_sprotoent() pp_sservent() */
5278 const int stayopen = TOPi;
5279 switch(PL_op->op_type) {
5281 #ifdef HAS_SETHOSTENT
5282 PerlSock_sethostent(stayopen);
5284 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5288 #ifdef HAS_SETNETENT
5289 PerlSock_setnetent(stayopen);
5291 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5295 #ifdef HAS_SETPROTOENT
5296 PerlSock_setprotoent(stayopen);
5298 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5302 #ifdef HAS_SETSERVENT
5303 PerlSock_setservent(stayopen);
5305 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5313 /* also used for: pp_egrent() pp_enetent() pp_eprotoent() pp_epwent()
5314 * pp_eservent() pp_sgrent() pp_spwent() */
5319 switch(PL_op->op_type) {
5321 #ifdef HAS_ENDHOSTENT
5322 PerlSock_endhostent();
5324 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5328 #ifdef HAS_ENDNETENT
5329 PerlSock_endnetent();
5331 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5335 #ifdef HAS_ENDPROTOENT
5336 PerlSock_endprotoent();
5338 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5342 #ifdef HAS_ENDSERVENT
5343 PerlSock_endservent();
5345 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5349 #if defined(HAS_GROUP) && defined(HAS_SETGRENT)
5352 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5356 #if defined(HAS_GROUP) && defined(HAS_ENDGRENT)
5359 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5363 #if defined(HAS_PASSWD) && defined(HAS_SETPWENT)
5366 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5370 #if defined(HAS_PASSWD) && defined(HAS_ENDPWENT)
5373 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5382 /* also used for: pp_gpwnam() pp_gpwuid() */
5388 I32 which = PL_op->op_type;
5390 struct passwd *pwent = NULL;
5392 * We currently support only the SysV getsp* shadow password interface.
5393 * The interface is declared in <shadow.h> and often one needs to link
5394 * with -lsecurity or some such.
5395 * This interface is used at least by Solaris, HP-UX, IRIX, and Linux.
5398 * AIX getpwnam() is clever enough to return the encrypted password
5399 * only if the caller (euid?) is root.
5401 * There are at least three other shadow password APIs. Many platforms
5402 * seem to contain more than one interface for accessing the shadow
5403 * password databases, possibly for compatibility reasons.
5404 * The getsp*() is by far he simplest one, the other two interfaces
5405 * are much more complicated, but also very similar to each other.
5410 * struct pr_passwd *getprpw*();
5411 * The password is in
5412 * char getprpw*(...).ufld.fd_encrypt[]
5413 * Mention HAS_GETPRPWNAM here so that Configure probes for it.
5418 * struct es_passwd *getespw*();
5419 * The password is in
5420 * char *(getespw*(...).ufld.fd_encrypt)
5421 * Mention HAS_GETESPWNAM here so that Configure probes for it.
5424 * struct userpw *getuserpw();
5425 * The password is in
5426 * char *(getuserpw(...)).spw_upw_passwd
5427 * (but the de facto standard getpwnam() should work okay)
5429 * Mention I_PROT here so that Configure probes for it.
5431 * In HP-UX for getprpw*() the manual page claims that one should include
5432 * <hpsecurity.h> instead of <sys/security.h>, but that is not needed
5433 * if one includes <shadow.h> as that includes <hpsecurity.h>,
5434 * and pp_sys.c already includes <shadow.h> if there is such.
5436 * Note that <sys/security.h> is already probed for, but currently
5437 * it is only included in special cases.
5439 * In Digital UNIX/Tru64 if using the getespw*() (which seems to be
5440 * be preferred interface, even though also the getprpw*() interface
5441 * is available) one needs to link with -lsecurity -ldb -laud -lm.
5442 * One also needs to call set_auth_parameters() in main() before
5443 * doing anything else, whether one is using getespw*() or getprpw*().
5445 * Note that accessing the shadow databases can be magnitudes
5446 * slower than accessing the standard databases.
5451 # if defined(__CYGWIN__) && defined(USE_REENTRANT_API)
5452 /* Cygwin 1.5.3-1 has buggy getpwnam_r() and getpwuid_r():
5453 * the pw_comment is left uninitialized. */
5454 PL_reentrant_buffer->_pwent_struct.pw_comment = NULL;
5460 const char* const name = POPpbytex;
5461 pwent = getpwnam(name);
5467 pwent = getpwuid(uid);
5471 # ifdef HAS_GETPWENT
5473 #ifdef POSIX_BC /* In some cases pw_passwd has invalid addresses */
5474 if (pwent) pwent = getpwnam(pwent->pw_name);
5477 DIE(aTHX_ PL_no_func, "getpwent");
5483 if (GIMME_V != G_ARRAY) {
5484 PUSHs(sv = sv_newmortal());
5486 if (which == OP_GPWNAM)
5487 sv_setuid(sv, pwent->pw_uid);
5489 sv_setpv(sv, pwent->pw_name);
5495 mPUSHs(newSVpv(pwent->pw_name, 0));
5499 /* If we have getspnam(), we try to dig up the shadow
5500 * password. If we are underprivileged, the shadow
5501 * interface will set the errno to EACCES or similar,
5502 * and return a null pointer. If this happens, we will
5503 * use the dummy password (usually "*" or "x") from the
5504 * standard password database.
5506 * In theory we could skip the shadow call completely
5507 * if euid != 0 but in practice we cannot know which
5508 * security measures are guarding the shadow databases
5509 * on a random platform.
5511 * Resist the urge to use additional shadow interfaces.
5512 * Divert the urge to writing an extension instead.
5515 /* Some AIX setups falsely(?) detect some getspnam(), which
5516 * has a different API than the Solaris/IRIX one. */
5517 # if defined(HAS_GETSPNAM) && !defined(_AIX)
5520 const struct spwd * const spwent = getspnam(pwent->pw_name);
5521 /* Save and restore errno so that
5522 * underprivileged attempts seem
5523 * to have never made the unsuccessful
5524 * attempt to retrieve the shadow password. */
5526 if (spwent && spwent->sp_pwdp)
5527 sv_setpv(sv, spwent->sp_pwdp);
5531 if (!SvPOK(sv)) /* Use the standard password, then. */
5532 sv_setpv(sv, pwent->pw_passwd);
5535 /* passwd is tainted because user himself can diddle with it.
5536 * admittedly not much and in a very limited way, but nevertheless. */
5539 sv_setuid(PUSHmortal, pwent->pw_uid);
5540 sv_setgid(PUSHmortal, pwent->pw_gid);
5542 /* pw_change, pw_quota, and pw_age are mutually exclusive--
5543 * because of the poor interface of the Perl getpw*(),
5544 * not because there's some standard/convention saying so.
5545 * A better interface would have been to return a hash,
5546 * but we are accursed by our history, alas. --jhi. */
5548 mPUSHi(pwent->pw_change);
5549 # elif defined(PWQUOTA)
5550 mPUSHi(pwent->pw_quota);
5551 # elif defined(PWAGE)
5552 mPUSHs(newSVpv(pwent->pw_age, 0));
5554 /* I think that you can never get this compiled, but just in case. */
5555 PUSHs(sv_mortalcopy(&PL_sv_no));
5558 /* pw_class and pw_comment are mutually exclusive--.
5559 * see the above note for pw_change, pw_quota, and pw_age. */
5561 mPUSHs(newSVpv(pwent->pw_class, 0));
5562 # elif defined(PWCOMMENT)
5563 mPUSHs(newSVpv(pwent->pw_comment, 0));
5565 /* I think that you can never get this compiled, but just in case. */
5566 PUSHs(sv_mortalcopy(&PL_sv_no));
5570 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_gecos, 0)));
5572 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5574 /* pw_gecos is tainted because user himself can diddle with it. */
5577 mPUSHs(newSVpv(pwent->pw_dir, 0));
5579 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_shell, 0)));
5580 /* pw_shell is tainted because user himself can diddle with it. */
5584 mPUSHi(pwent->pw_expire);
5589 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5594 /* also used for: pp_ggrgid() pp_ggrnam() */
5600 const I32 which = PL_op->op_type;
5601 const struct group *grent;
5603 if (which == OP_GGRNAM) {
5604 const char* const name = POPpbytex;
5605 grent = (const struct group *)getgrnam(name);
5607 else if (which == OP_GGRGID) {
5609 const Gid_t gid = POPu;
5610 #elif Gid_t_sign == -1
5611 const Gid_t gid = POPi;
5613 # error "Unexpected Gid_t_sign"
5615 grent = (const struct group *)getgrgid(gid);
5619 grent = (struct group *)getgrent();
5621 DIE(aTHX_ PL_no_func, "getgrent");
5625 if (GIMME_V != G_ARRAY) {
5626 SV * const sv = sv_newmortal();
5630 if (which == OP_GGRNAM)
5631 sv_setgid(sv, grent->gr_gid);
5633 sv_setpv(sv, grent->gr_name);
5639 mPUSHs(newSVpv(grent->gr_name, 0));
5642 mPUSHs(newSVpv(grent->gr_passwd, 0));
5644 PUSHs(sv_mortalcopy(&PL_sv_no));
5647 sv_setgid(PUSHmortal, grent->gr_gid);
5649 #if !(defined(_CRAYMPP) && defined(USE_REENTRANT_API))
5650 /* In UNICOS/mk (_CRAYMPP) the multithreading
5651 * versions (getgrnam_r, getgrgid_r)
5652 * seem to return an illegal pointer
5653 * as the group members list, gr_mem.
5654 * getgrent() doesn't even have a _r version
5655 * but the gr_mem is poisonous anyway.
5656 * So yes, you cannot get the list of group
5657 * members if building multithreaded in UNICOS/mk. */
5658 PUSHs(space_join_names_mortal(grent->gr_mem));
5664 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5674 if (!(tmps = PerlProc_getlogin()))
5676 sv_setpv_mg(TARG, tmps);
5680 DIE(aTHX_ PL_no_func, "getlogin");
5684 /* Miscellaneous. */
5689 dSP; dMARK; dORIGMARK; dTARGET;
5690 I32 items = SP - MARK;
5691 unsigned long a[20];
5696 while (++MARK <= SP) {
5697 if (SvTAINTED(*MARK)) {
5703 TAINT_PROPER("syscall");
5706 /* This probably won't work on machines where sizeof(long) != sizeof(int)
5707 * or where sizeof(long) != sizeof(char*). But such machines will
5708 * not likely have syscall implemented either, so who cares?
5710 while (++MARK <= SP) {
5711 if (SvNIOK(*MARK) || !i)
5712 a[i++] = SvIV(*MARK);
5713 else if (*MARK == &PL_sv_undef)
5716 a[i++] = (unsigned long)SvPV_force_nolen(*MARK);
5722 DIE(aTHX_ "Too many args to syscall");
5724 DIE(aTHX_ "Too few args to syscall");
5726 retval = syscall(a[0]);
5729 retval = syscall(a[0],a[1]);
5732 retval = syscall(a[0],a[1],a[2]);
5735 retval = syscall(a[0],a[1],a[2],a[3]);
5738 retval = syscall(a[0],a[1],a[2],a[3],a[4]);
5741 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5]);
5744 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6]);
5747 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7]);
5754 DIE(aTHX_ PL_no_func, "syscall");
5758 #ifdef FCNTL_EMULATE_FLOCK
5760 /* XXX Emulate flock() with fcntl().
5761 What's really needed is a good file locking module.
5765 fcntl_emulate_flock(int fd, int operation)
5770 switch (operation & ~LOCK_NB) {
5772 flock.l_type = F_RDLCK;
5775 flock.l_type = F_WRLCK;
5778 flock.l_type = F_UNLCK;
5784 flock.l_whence = SEEK_SET;
5785 flock.l_start = flock.l_len = (Off_t)0;
5787 res = fcntl(fd, (operation & LOCK_NB) ? F_SETLK : F_SETLKW, &flock);
5788 if (res == -1 && ((errno == EAGAIN) || (errno == EACCES)))
5789 errno = EWOULDBLOCK;
5793 #endif /* FCNTL_EMULATE_FLOCK */
5795 #ifdef LOCKF_EMULATE_FLOCK
5797 /* XXX Emulate flock() with lockf(). This is just to increase
5798 portability of scripts. The calls are not completely
5799 interchangeable. What's really needed is a good file
5803 /* The lockf() constants might have been defined in <unistd.h>.
5804 Unfortunately, <unistd.h> causes troubles on some mixed
5805 (BSD/POSIX) systems, such as SunOS 4.1.3.
5807 Further, the lockf() constants aren't POSIX, so they might not be
5808 visible if we're compiling with _POSIX_SOURCE defined. Thus, we'll
5809 just stick in the SVID values and be done with it. Sigh.
5813 # define F_ULOCK 0 /* Unlock a previously locked region */
5816 # define F_LOCK 1 /* Lock a region for exclusive use */
5819 # define F_TLOCK 2 /* Test and lock a region for exclusive use */
5822 # define F_TEST 3 /* Test a region for other processes locks */
5826 lockf_emulate_flock(int fd, int operation)
5832 /* flock locks entire file so for lockf we need to do the same */
5833 pos = PerlLIO_lseek(fd, (Off_t)0, SEEK_CUR); /* get pos to restore later */
5834 if (pos > 0) /* is seekable and needs to be repositioned */
5835 if (PerlLIO_lseek(fd, (Off_t)0, SEEK_SET) < 0)
5836 pos = -1; /* seek failed, so don't seek back afterwards */
5839 switch (operation) {
5841 /* LOCK_SH - get a shared lock */
5843 /* LOCK_EX - get an exclusive lock */
5845 i = lockf (fd, F_LOCK, 0);
5848 /* LOCK_SH|LOCK_NB - get a non-blocking shared lock */
5849 case LOCK_SH|LOCK_NB:
5850 /* LOCK_EX|LOCK_NB - get a non-blocking exclusive lock */
5851 case LOCK_EX|LOCK_NB:
5852 i = lockf (fd, F_TLOCK, 0);
5854 if ((errno == EAGAIN) || (errno == EACCES))
5855 errno = EWOULDBLOCK;
5858 /* LOCK_UN - unlock (non-blocking is a no-op) */
5860 case LOCK_UN|LOCK_NB:
5861 i = lockf (fd, F_ULOCK, 0);
5864 /* Default - can't decipher operation */
5871 if (pos > 0) /* need to restore position of the handle */
5872 PerlLIO_lseek(fd, pos, SEEK_SET); /* ignore error here */
5877 #endif /* LOCKF_EMULATE_FLOCK */
5880 * ex: set ts=8 sts=4 sw=4 et: