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
36 /* Shadow password support for solaris - pdo@cs.umd.edu
37 * Not just Solaris: at least HP-UX, IRIX, Linux.
38 * The API is from SysV.
40 * There are at least two more shadow interfaces,
41 * see the comments in pp_gpwent().
45 /* There is a MAXINT coming from <shadow.h> <- <hpsecurity.h> <- <values.h>
46 * and another MAXINT from "perl.h" <- <sys/param.h>. */
53 # include <sys/resource.h>
62 # include <sys/select.h>
66 /* XXX Configure test needed.
67 h_errno might not be a simple 'int', especially for multi-threaded
68 applications, see "extern int errno in perl.h". Creating such
69 a test requires taking into account the differences between
70 compiling multithreaded and singlethreaded ($ccflags et al).
71 HOST_NOT_FOUND is typically defined in <netdb.h>.
73 #if defined(HOST_NOT_FOUND) && !defined(h_errno) && !defined(__CYGWIN__)
82 struct passwd *getpwnam (char *);
83 struct passwd *getpwuid (Uid_t);
88 struct passwd *getpwent (void);
89 #elif defined (VMS) && defined (my_getpwent)
90 struct passwd *Perl_my_getpwent (pTHX);
99 struct group *getgrnam (char *);
100 struct group *getgrgid (Gid_t);
104 struct group *getgrent (void);
110 # if defined(_MSC_VER) || defined(__MINGW32__)
111 # include <sys/utime.h>
118 # ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
121 # define my_chsize PerlLIO_chsize
124 # define my_chsize PerlLIO_chsize
126 I32 my_chsize(int fd, Off_t length);
132 #else /* no flock() */
134 /* fcntl.h might not have been included, even if it exists, because
135 the current Configure only sets I_FCNTL if it's needed to pick up
136 the *_OK constants. Make sure it has been included before testing
137 the fcntl() locking constants. */
138 # if defined(HAS_FCNTL) && !defined(I_FCNTL)
142 # if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
143 # define FLOCK fcntl_emulate_flock
144 # define FCNTL_EMULATE_FLOCK
145 # else /* no flock() or fcntl(F_SETLK,...) */
147 # define FLOCK lockf_emulate_flock
148 # define LOCKF_EMULATE_FLOCK
150 # endif /* no flock() or fcntl(F_SETLK,...) */
153 static int FLOCK (int, int);
156 * These are the flock() constants. Since this sytems doesn't have
157 * flock(), the values of the constants are probably not available.
171 # endif /* emulating flock() */
173 #endif /* no flock() */
176 static const char zero_but_true[ZBTLEN + 1] = "0 but true";
178 #if defined(I_SYS_ACCESS) && !defined(R_OK)
179 # include <sys/access.h>
182 #if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
183 # define FD_CLOEXEC 1 /* NeXT needs this */
189 /* Missing protos on LynxOS */
190 void sethostent(int);
191 void endhostent(void);
193 void endnetent(void);
194 void setprotoent(int);
195 void endprotoent(void);
196 void setservent(int);
197 void endservent(void);
200 #undef PERL_EFF_ACCESS /* EFFective uid/gid ACCESS */
202 /* F_OK unused: if stat() cannot find it... */
204 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
205 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
206 # define PERL_EFF_ACCESS(p,f) (access((p), (f) | EFF_ONLY_OK))
209 #if !defined(PERL_EFF_ACCESS) && defined(HAS_EACCESS)
210 # ifdef I_SYS_SECURITY
211 # include <sys/security.h>
215 # define PERL_EFF_ACCESS(p,f) (eaccess((p), (f), ACC_SELF))
218 # define PERL_EFF_ACCESS(p,f) (eaccess((p), (f)))
222 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESSX) && defined(ACC_SELF)
224 # define PERL_EFF_ACCESS(p,f) (accessx((p), (f), ACC_SELF))
228 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) \
229 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
230 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
233 S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
235 const Uid_t ruid = getuid();
236 const Uid_t euid = geteuid();
237 const Gid_t rgid = getgid();
238 const Gid_t egid = getegid();
241 #if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
242 Perl_croak(aTHX_ "switching effective uid is not implemented");
245 if (setreuid(euid, ruid))
248 if (setresuid(euid, ruid, (Uid_t)-1))
251 /* diag_listed_as: entering effective %s failed */
252 Perl_croak(aTHX_ "entering effective uid failed");
255 #if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
256 Perl_croak(aTHX_ "switching effective gid is not implemented");
259 if (setregid(egid, rgid))
262 if (setresgid(egid, rgid, (Gid_t)-1))
265 /* diag_listed_as: entering effective %s failed */
266 Perl_croak(aTHX_ "entering effective gid failed");
269 res = access(path, mode);
272 if (setreuid(ruid, euid))
275 if (setresuid(ruid, euid, (Uid_t)-1))
278 /* diag_listed_as: leaving effective %s failed */
279 Perl_croak(aTHX_ "leaving effective uid failed");
282 if (setregid(rgid, egid))
285 if (setresgid(rgid, egid, (Gid_t)-1))
288 /* diag_listed_as: leaving effective %s failed */
289 Perl_croak(aTHX_ "leaving effective gid failed");
293 # define PERL_EFF_ACCESS(p,f) (S_emulate_eaccess(aTHX_ (p), (f)))
300 const char * const tmps = POPpconstx;
301 const I32 gimme = GIMME_V;
302 const char *mode = "r";
305 if (PL_op->op_private & OPpOPEN_IN_RAW)
307 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
309 fp = PerlProc_popen(tmps, mode);
311 const char * const type = Perl_PerlIO_context_layers(aTHX_ NULL);
313 PerlIO_apply_layers(aTHX_ fp,mode,type);
315 if (gimme == G_VOID) {
317 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
320 else if (gimme == G_SCALAR) {
321 ENTER_with_name("backtick");
323 PL_rs = &PL_sv_undef;
324 sv_setpvs(TARG, ""); /* note that this preserves previous buffer */
325 while (sv_gets(TARG, fp, SvCUR(TARG)) != NULL)
327 LEAVE_with_name("backtick");
333 SV * const sv = newSV(79);
334 if (sv_gets(sv, fp, 0) == NULL) {
339 if (SvLEN(sv) - SvCUR(sv) > 20) {
340 SvPV_shrink_to_cur(sv);
345 STATUS_NATIVE_CHILD_SET(PerlProc_pclose(fp));
346 TAINT; /* "I believe that this is not gratuitous!" */
349 STATUS_NATIVE_CHILD_SET(-1);
350 if (gimme == G_SCALAR)
362 /* make a copy of the pattern if it is gmagical, to ensure that magic
363 * is called once and only once */
364 if (SvGMAGICAL(TOPm1s)) TOPm1s = sv_2mortal(newSVsv(TOPm1s));
366 tryAMAGICunTARGETlist(iter_amg, -1, (PL_op->op_flags & OPf_SPECIAL));
368 if (PL_op->op_flags & OPf_SPECIAL) {
369 /* call Perl-level glob function instead. Stack args are:
370 * MARK, wildcard, csh_glob context index
371 * and following OPs should be: gv(CORE::GLOBAL::glob), entersub
375 /* stack args are: wildcard, gv(_GEN_n) */
383 /* Note that we only ever get here if File::Glob fails to load
384 * without at the same time croaking, for some reason, or if
385 * perl was built with PERL_EXTERNAL_GLOB */
387 ENTER_with_name("glob");
392 * The external globbing program may use things we can't control,
393 * so for security reasons we must assume the worst.
396 taint_proper(PL_no_security, "glob");
400 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
401 PL_last_in_gv = MUTABLE_GV(*PL_stack_sp--);
403 SAVESPTR(PL_rs); /* This is not permanent, either. */
404 PL_rs = newSVpvs_flags("\000", SVs_TEMP);
407 *SvPVX(PL_rs) = '\n';
411 result = do_readline();
412 LEAVE_with_name("glob");
419 PL_last_in_gv = cGVOP_gv;
420 return do_readline();
430 do_join(TARG, &PL_sv_no, MARK, SP);
434 else if (SP == MARK) {
441 if (SvGMAGICAL(exsv)) exsv = sv_mortalcopy(exsv);
444 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
445 /* well-formed exception supplied */
450 if (SvGMAGICAL(ERRSV)) {
451 exsv = sv_newmortal();
452 sv_setsv_nomg(exsv, ERRSV);
456 else if (SvPOKp(ERRSV) ? SvCUR(ERRSV) : SvNIOKp(ERRSV)) {
457 exsv = sv_newmortal();
458 sv_setsv_nomg(exsv, ERRSV);
459 sv_catpvs(exsv, "\t...caught");
462 exsv = newSVpvs_flags("Warning: something's wrong", SVs_TEMP);
465 if (SvROK(exsv) && !PL_warnhook)
466 Perl_warn(aTHX_ "%"SVf, SVfARG(exsv));
477 VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
479 if (SP - MARK != 1) {
481 do_join(TARG, &PL_sv_no, MARK, SP);
489 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
490 /* well-formed exception supplied */
492 else if (SvROK(ERRSV)) {
494 if (sv_isobject(exsv)) {
495 HV * const stash = SvSTASH(SvRV(exsv));
496 GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
498 SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
499 SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
506 call_sv(MUTABLE_SV(GvCV(gv)),
507 G_SCALAR|G_EVAL|G_KEEPERR);
508 exsv = sv_mortalcopy(*PL_stack_sp--);
512 else if (SvPV_const(ERRSV, len), len) {
513 exsv = sv_mortalcopy(ERRSV);
514 sv_catpvs(exsv, "\t...propagated");
517 exsv = newSVpvs_flags("Died", SVs_TEMP);
525 Perl_tied_method(pTHX_ const char *const methname, SV **sp, SV *const sv,
526 const MAGIC *const mg, const U32 flags, U32 argc, ...)
531 PERL_ARGS_ASSERT_TIED_METHOD;
533 /* Ensure that our flag bits do not overlap. */
534 assert((TIED_METHOD_MORTALIZE_NOT_NEEDED & G_WANT) == 0);
535 assert((TIED_METHOD_ARGUMENTS_ON_STACK & G_WANT) == 0);
536 assert((TIED_METHOD_SAY & G_WANT) == 0);
538 PUTBACK; /* sp is at *foot* of args, so this pops args from old stack */
539 PUSHSTACKi(PERLSI_MAGIC);
540 EXTEND(SP, argc+1); /* object + args */
542 PUSHs(SvTIED_obj(sv, mg));
543 if (flags & TIED_METHOD_ARGUMENTS_ON_STACK) {
544 Copy(orig_sp + 2, sp + 1, argc, SV*); /* copy args to new stack */
548 const U32 mortalize_not_needed
549 = flags & TIED_METHOD_MORTALIZE_NOT_NEEDED;
551 va_start(args, argc);
553 SV *const arg = va_arg(args, SV *);
554 if(mortalize_not_needed)
563 ENTER_with_name("call_tied_method");
564 if (flags & TIED_METHOD_SAY) {
565 /* local $\ = "\n" */
566 SAVEGENERICSV(PL_ors_sv);
567 PL_ors_sv = newSVpvs("\n");
569 ret_args = call_method(methname, flags & G_WANT);
574 if (ret_args) { /* copy results back to original stack */
575 EXTEND(sp, ret_args);
576 Copy(orig_sp - ret_args + 1, sp + 1, ret_args, SV*);
580 LEAVE_with_name("call_tied_method");
584 #define tied_method0(a,b,c,d) \
585 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,0)
586 #define tied_method1(a,b,c,d,e) \
587 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,1,e)
588 #define tied_method2(a,b,c,d,e,f) \
589 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,2,e,f)
602 GV * const gv = MUTABLE_GV(*++MARK);
604 if (!isGV(gv) && !(SvTYPE(gv) == SVt_PVLV && isGV_with_GP(gv)))
605 DIE(aTHX_ PL_no_usym, "filehandle");
607 if ((io = GvIOp(gv))) {
609 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
612 Perl_ck_warner_d(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
613 "Opening dirhandle %"HEKf" also as a file",
614 HEKfARG(GvENAME_HEK(gv)));
616 mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
618 /* Method's args are same as ours ... */
619 /* ... except handle is replaced by the object */
620 return Perl_tied_method(aTHX_ "OPEN", mark - 1, MUTABLE_SV(io), mg,
621 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
633 tmps = SvPV_const(sv, len);
634 ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, NULL, MARK+1, (SP-MARK));
637 PUSHi( (I32)PL_forkprocess );
638 else if (PL_forkprocess == 0) /* we are a new child */
649 MAXARG == 0 || (!TOPs && !POPs) ? PL_defoutgv : MUTABLE_GV(POPs);
655 IO * const io = GvIO(gv);
657 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
659 return tied_method0("CLOSE", SP, MUTABLE_SV(io), mg);
663 PUSHs(boolSV(do_close(gv, TRUE)));
676 GV * const wgv = MUTABLE_GV(POPs);
677 GV * const rgv = MUTABLE_GV(POPs);
682 if (!isGV_with_GP(rgv) || !isGV_with_GP(wgv))
683 DIE(aTHX_ PL_no_usym, "filehandle");
688 do_close(rgv, FALSE);
690 do_close(wgv, FALSE);
692 if (PerlProc_pipe(fd) < 0)
695 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
696 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
697 IoOFP(rstio) = IoIFP(rstio);
698 IoIFP(wstio) = IoOFP(wstio);
699 IoTYPE(rstio) = IoTYPE_RDONLY;
700 IoTYPE(wstio) = IoTYPE_WRONLY;
702 if (!IoIFP(rstio) || !IoOFP(wstio)) {
704 PerlIO_close(IoIFP(rstio));
706 PerlLIO_close(fd[0]);
708 PerlIO_close(IoOFP(wstio));
710 PerlLIO_close(fd[1]);
713 #if defined(HAS_FCNTL) && defined(F_SETFD)
714 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
715 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
722 DIE(aTHX_ PL_no_func, "pipe");
736 gv = MUTABLE_GV(POPs);
740 && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar)))
742 return tied_method0("FILENO", SP, MUTABLE_SV(io), mg);
745 if (!io || !(fp = IoIFP(io))) {
746 /* Can't do this because people seem to do things like
747 defined(fileno($foo)) to check whether $foo is a valid fh.
754 PUSHi(PerlIO_fileno(fp));
766 if (MAXARG < 1 || (!TOPs && !POPs)) {
767 anum = PerlLIO_umask(022);
768 /* setting it to 022 between the two calls to umask avoids
769 * to have a window where the umask is set to 0 -- meaning
770 * that another thread could create world-writeable files. */
772 (void)PerlLIO_umask(anum);
775 anum = PerlLIO_umask(POPi);
776 TAINT_PROPER("umask");
779 /* Only DIE if trying to restrict permissions on "user" (self).
780 * Otherwise it's harmless and more useful to just return undef
781 * since 'group' and 'other' concepts probably don't exist here. */
782 if (MAXARG >= 1 && (TOPs||POPs) && (POPi & 0700))
783 DIE(aTHX_ "umask not implemented");
784 XPUSHs(&PL_sv_undef);
803 gv = MUTABLE_GV(POPs);
807 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
809 /* This takes advantage of the implementation of the varargs
810 function, which I don't think that the optimiser will be able to
811 figure out. Although, as it's a static function, in theory it
813 return Perl_tied_method(aTHX_ "BINMODE", SP, MUTABLE_SV(io), mg,
814 G_SCALAR|TIED_METHOD_MORTALIZE_NOT_NEEDED,
815 discp ? 1 : 0, discp);
819 if (!io || !(fp = IoIFP(io))) {
821 SETERRNO(EBADF,RMS_IFI);
828 const char *d = NULL;
831 d = SvPV_const(discp, len);
832 mode = mode_from_discipline(d, len);
833 if (PerlIO_binmode(aTHX_ fp, IoTYPE(io), mode, d)) {
834 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
835 if (!PerlIO_binmode(aTHX_ IoOFP(io), IoTYPE(io), mode, d)) {
856 const I32 markoff = MARK - PL_stack_base;
857 const char *methname;
858 int how = PERL_MAGIC_tied;
862 switch(SvTYPE(varsv)) {
864 methname = "TIEHASH";
865 HvEITER_set(MUTABLE_HV(varsv), 0);
868 methname = "TIEARRAY";
869 if (!AvREAL(varsv)) {
871 Perl_croak(aTHX_ "Cannot tie unreifiable array");
872 av_clear((AV *)varsv);
879 if (isGV_with_GP(varsv) && !SvFAKE(varsv)) {
880 methname = "TIEHANDLE";
881 how = PERL_MAGIC_tiedscalar;
882 /* For tied filehandles, we apply tiedscalar magic to the IO
883 slot of the GP rather than the GV itself. AMS 20010812 */
885 GvIOp(varsv) = newIO();
886 varsv = MUTABLE_SV(GvIOp(varsv));
891 methname = "TIESCALAR";
892 how = PERL_MAGIC_tiedscalar;
896 if (sv_isobject(*MARK)) { /* Calls GET magic. */
897 ENTER_with_name("call_TIE");
898 PUSHSTACKi(PERLSI_MAGIC);
900 EXTEND(SP,(I32)items);
904 call_method(methname, G_SCALAR);
907 /* Can't use call_method here, else this: fileno FOO; tie @a, "FOO"
908 * will attempt to invoke IO::File::TIEARRAY, with (best case) the
909 * wrong error message, and worse case, supreme action at a distance.
910 * (Sorry obfuscation writers. You're not going to be given this one.)
912 stash = gv_stashsv(*MARK, 0);
913 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
914 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
915 methname, SVfARG(SvOK(*MARK) ? *MARK : &PL_sv_no));
917 ENTER_with_name("call_TIE");
918 PUSHSTACKi(PERLSI_MAGIC);
920 EXTEND(SP,(I32)items);
924 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
930 if (sv_isobject(sv)) {
931 sv_unmagic(varsv, how);
932 /* Croak if a self-tie on an aggregate is attempted. */
933 if (varsv == SvRV(sv) &&
934 (SvTYPE(varsv) == SVt_PVAV ||
935 SvTYPE(varsv) == SVt_PVHV))
937 "Self-ties of arrays and hashes are not supported");
938 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
940 LEAVE_with_name("call_TIE");
941 SP = PL_stack_base + markoff;
951 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
952 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
954 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
957 if ((mg = SvTIED_mg(sv, how))) {
958 SV * const obj = SvRV(SvTIED_obj(sv, mg));
960 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
962 if (gv && isGV(gv) && (cv = GvCV(gv))) {
964 PUSHs(SvTIED_obj(MUTABLE_SV(gv), mg));
965 mXPUSHi(SvREFCNT(obj) - 1);
967 ENTER_with_name("call_UNTIE");
968 call_sv(MUTABLE_SV(cv), G_VOID);
969 LEAVE_with_name("call_UNTIE");
972 else if (mg && SvREFCNT(obj) > 1) {
973 Perl_ck_warner(aTHX_ packWARN(WARN_UNTIE),
974 "untie attempted while %"UVuf" inner references still exist",
975 (UV)SvREFCNT(obj) - 1 ) ;
979 sv_unmagic(sv, how) ;
989 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
990 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
992 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
995 if ((mg = SvTIED_mg(sv, how))) {
996 PUSHs(SvTIED_obj(sv, mg));
1009 HV * const hv = MUTABLE_HV(POPs);
1010 SV * const sv = newSVpvs_flags("AnyDBM_File", SVs_TEMP);
1011 stash = gv_stashsv(sv, 0);
1012 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
1014 require_pv("AnyDBM_File.pm");
1016 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH")))
1017 DIE(aTHX_ "No dbm on this machine");
1027 mPUSHu(O_RDWR|O_CREAT);
1031 if (!SvOK(right)) right = &PL_sv_no;
1035 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
1038 if (!sv_isobject(TOPs)) {
1046 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
1050 if (sv_isobject(TOPs)) {
1051 sv_unmagic(MUTABLE_SV(hv), PERL_MAGIC_tied);
1052 sv_magic(MUTABLE_SV(hv), TOPs, PERL_MAGIC_tied, NULL, 0);
1069 struct timeval timebuf;
1070 struct timeval *tbuf = &timebuf;
1073 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1078 # if BYTEORDER & 0xf0000
1079 # define ORDERBYTE (0x88888888 - BYTEORDER)
1081 # define ORDERBYTE (0x4444 - BYTEORDER)
1087 for (i = 1; i <= 3; i++) {
1088 SV * const sv = SP[i];
1092 if (SvREADONLY(sv)) {
1094 sv_force_normal_flags(sv, 0);
1095 if (SvREADONLY(sv) && !(SvPOK(sv) && SvCUR(sv) == 0))
1096 Perl_croak_no_modify(aTHX);
1100 Perl_ck_warner(aTHX_ packWARN(WARN_MISC),
1101 "Non-string passed as bitmask");
1102 SvPV_force_nomg_nolen(sv); /* force string conversion */
1109 /* little endians can use vecs directly */
1110 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1117 masksize = NFDBITS / NBBY;
1119 masksize = sizeof(long); /* documented int, everyone seems to use long */
1121 Zero(&fd_sets[0], 4, char*);
1124 # if SELECT_MIN_BITS == 1
1125 growsize = sizeof(fd_set);
1127 # if defined(__GLIBC__) && defined(__FD_SETSIZE)
1128 # undef SELECT_MIN_BITS
1129 # define SELECT_MIN_BITS __FD_SETSIZE
1131 /* If SELECT_MIN_BITS is greater than one we most probably will want
1132 * to align the sizes with SELECT_MIN_BITS/8 because for example
1133 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
1134 * UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
1135 * on (sets/tests/clears bits) is 32 bits. */
1136 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
1144 timebuf.tv_sec = (long)value;
1145 value -= (NV)timebuf.tv_sec;
1146 timebuf.tv_usec = (long)(value * 1000000.0);
1151 for (i = 1; i <= 3; i++) {
1153 if (!SvOK(sv) || SvCUR(sv) == 0) {
1160 Sv_Grow(sv, growsize);
1164 while (++j <= growsize) {
1168 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1170 Newx(fd_sets[i], growsize, char);
1171 for (offset = 0; offset < growsize; offset += masksize) {
1172 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1173 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1176 fd_sets[i] = SvPVX(sv);
1180 #ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1181 /* Can't make just the (void*) conditional because that would be
1182 * cpp #if within cpp macro, and not all compilers like that. */
1183 nfound = PerlSock_select(
1185 (Select_fd_set_t) fd_sets[1],
1186 (Select_fd_set_t) fd_sets[2],
1187 (Select_fd_set_t) fd_sets[3],
1188 (void*) tbuf); /* Workaround for compiler bug. */
1190 nfound = PerlSock_select(
1192 (Select_fd_set_t) fd_sets[1],
1193 (Select_fd_set_t) fd_sets[2],
1194 (Select_fd_set_t) fd_sets[3],
1197 for (i = 1; i <= 3; i++) {
1200 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1202 for (offset = 0; offset < growsize; offset += masksize) {
1203 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1204 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1206 Safefree(fd_sets[i]);
1213 if (GIMME == G_ARRAY && tbuf) {
1214 value = (NV)(timebuf.tv_sec) +
1215 (NV)(timebuf.tv_usec) / 1000000.0;
1220 DIE(aTHX_ "select not implemented");
1225 =for apidoc setdefout
1227 Sets PL_defoutgv, the default file handle for output, to the passed in
1228 typeglob. As PL_defoutgv "owns" a reference on its typeglob, the reference
1229 count of the passed in typeglob is increased by one, and the reference count
1230 of the typeglob that PL_defoutgv points to is decreased by one.
1236 Perl_setdefout(pTHX_ GV *gv)
1239 PERL_ARGS_ASSERT_SETDEFOUT;
1240 SvREFCNT_inc_simple_void_NN(gv);
1241 SvREFCNT_dec(PL_defoutgv);
1249 GV * const newdefout = (PL_op->op_private > 0) ? (MUTABLE_GV(POPs)) : NULL;
1250 GV * egv = GvEGVx(PL_defoutgv);
1255 hv = isGV_with_GP(egv) ? GvSTASH(egv) : NULL;
1256 gvp = hv && HvENAME(hv)
1257 ? (GV**)hv_fetch(hv, GvNAME(egv), HEK_UTF8(GvNAME_HEK(egv)) ? -GvNAMELEN(egv) : GvNAMELEN(egv), FALSE)
1259 if (gvp && *gvp == egv) {
1260 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
1264 mXPUSHs(newRV(MUTABLE_SV(egv)));
1268 if (!GvIO(newdefout))
1269 gv_IOadd(newdefout);
1270 setdefout(newdefout);
1280 MAXARG==0 || (!TOPs && !POPs) ? PL_stdingv : MUTABLE_GV(POPs);
1281 IO *const io = GvIO(gv);
1287 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1289 const U32 gimme = GIMME_V;
1290 Perl_tied_method(aTHX_ "GETC", SP, MUTABLE_SV(io), mg, gimme, 0);
1291 if (gimme == G_SCALAR) {
1293 SvSetMagicSV_nosteal(TARG, TOPs);
1298 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
1299 if (!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
1301 SETERRNO(EBADF,RMS_IFI);
1305 sv_setpvs(TARG, " ");
1306 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
1307 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1308 /* Find out how many bytes the char needs */
1309 Size_t len = UTF8SKIP(SvPVX_const(TARG));
1312 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1313 SvCUR_set(TARG,1+len);
1322 S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
1326 const I32 gimme = GIMME_V;
1328 PERL_ARGS_ASSERT_DOFORM;
1330 if (cv && CvCLONE(cv))
1331 cv = MUTABLE_CV(sv_2mortal(MUTABLE_SV(cv_clone(cv))));
1336 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
1337 PUSHFORMAT(cx, retop);
1338 if (CvDEPTH(cv) >= 2) {
1339 PERL_STACK_OVERFLOW_CHECK();
1340 pad_push(CvPADLIST(cv), CvDEPTH(cv));
1343 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), CvDEPTH(cv));
1345 setdefout(gv); /* locally select filehandle so $% et al work */
1364 gv = MUTABLE_GV(POPs);
1381 tmpsv = sv_newmortal();
1382 gv_efullname4(tmpsv, fgv, NULL, FALSE);
1383 DIE(aTHX_ "Undefined format \"%"SVf"\" called", SVfARG(tmpsv));
1385 IoFLAGS(io) &= ~IOf_DIDTOP;
1386 RETURNOP(doform(cv,gv,PL_op->op_next));
1392 GV * const gv = cxstack[cxstack_ix].blk_format.gv;
1393 IO * const io = GvIOp(gv);
1401 if (!io || !(ofp = IoOFP(io)))
1404 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
1405 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
1407 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1408 PL_formtarget != PL_toptarget)
1412 if (!IoTOP_GV(io)) {
1415 if (!IoTOP_NAME(io)) {
1417 if (!IoFMT_NAME(io))
1418 IoFMT_NAME(io) = savepv(GvNAME(gv));
1419 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%"HEKf"_TOP",
1420 HEKfARG(GvNAME_HEK(gv))));
1421 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
1422 if ((topgv && GvFORM(topgv)) ||
1423 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
1424 IoTOP_NAME(io) = savesvpv(topname);
1426 IoTOP_NAME(io) = savepvs("top");
1428 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
1429 if (!topgv || !GvFORM(topgv)) {
1430 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1433 IoTOP_GV(io) = topgv;
1435 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1436 I32 lines = IoLINES_LEFT(io);
1437 const char *s = SvPVX_const(PL_formtarget);
1438 if (lines <= 0) /* Yow, header didn't even fit!!! */
1440 while (lines-- > 0) {
1441 s = strchr(s, '\n');
1447 const STRLEN save = SvCUR(PL_formtarget);
1448 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
1449 do_print(PL_formtarget, ofp);
1450 SvCUR_set(PL_formtarget, save);
1451 sv_chop(PL_formtarget, s);
1452 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
1455 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
1456 do_print(PL_formfeed, ofp);
1457 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1459 PL_formtarget = PL_toptarget;
1460 IoFLAGS(io) |= IOf_DIDTOP;
1463 DIE(aTHX_ "bad top format reference");
1466 SV * const sv = sv_newmortal();
1467 gv_efullname4(sv, fgv, NULL, FALSE);
1468 DIE(aTHX_ "Undefined top format \"%"SVf"\" called", SVfARG(sv));
1470 return doform(cv, gv, PL_op);
1474 POPBLOCK(cx,PL_curpm);
1476 retop = cx->blk_sub.retop;
1477 SP = newsp; /* ignore retval of formline */
1480 if (!io || !(fp = IoOFP(io))) {
1481 if (io && IoIFP(io))
1482 report_wrongway_fh(gv, '<');
1488 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
1489 Perl_ck_warner(aTHX_ packWARN(WARN_IO), "page overflow");
1491 if (!do_print(PL_formtarget, fp))
1494 FmLINES(PL_formtarget) = 0;
1495 SvCUR_set(PL_formtarget, 0);
1496 *SvEND(PL_formtarget) = '\0';
1497 if (IoFLAGS(io) & IOf_FLUSH)
1498 (void)PerlIO_flush(fp);
1502 PL_formtarget = PL_bodytarget;
1503 PERL_UNUSED_VAR(gimme);
1509 dVAR; dSP; dMARK; dORIGMARK;
1514 = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv;
1515 IO *const io = GvIO(gv);
1518 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1520 if (MARK == ORIGMARK) {
1523 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1526 return Perl_tied_method(aTHX_ "PRINTF", mark - 1, MUTABLE_SV(io),
1528 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1536 SETERRNO(EBADF,RMS_IFI);
1539 else if (!(fp = IoOFP(io))) {
1541 report_wrongway_fh(gv, '<');
1542 else if (ckWARN(WARN_CLOSED))
1544 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
1548 do_sprintf(sv, SP - MARK, MARK + 1);
1549 if (!do_print(sv, fp))
1552 if (IoFLAGS(io) & IOf_FLUSH)
1553 if (PerlIO_flush(fp) == EOF)
1564 PUSHs(&PL_sv_undef);
1572 const int perm = (MAXARG > 3 && (TOPs || POPs)) ? POPi : 0666;
1573 const int mode = POPi;
1574 SV * const sv = POPs;
1575 GV * const gv = MUTABLE_GV(POPs);
1578 /* Need TIEHANDLE method ? */
1579 const char * const tmps = SvPV_const(sv, len);
1580 /* FIXME? do_open should do const */
1581 if (do_open(gv, tmps, len, TRUE, mode, perm, NULL)) {
1582 IoLINES(GvIOp(gv)) = 0;
1586 PUSHs(&PL_sv_undef);
1593 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
1607 bool charstart = FALSE;
1608 STRLEN charskip = 0;
1611 GV * const gv = MUTABLE_GV(*++MARK);
1612 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1613 && gv && (io = GvIO(gv)) )
1615 const MAGIC *const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1617 return Perl_tied_method(aTHX_ "READ", mark - 1, MUTABLE_SV(io), mg,
1618 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1627 sv_setpvs(bufsv, "");
1628 length = SvIVx(*++MARK);
1630 DIE(aTHX_ "Negative length");
1633 offset = SvIVx(*++MARK);
1637 if (!io || !IoIFP(io)) {
1639 SETERRNO(EBADF,RMS_IFI);
1642 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
1643 buffer = SvPVutf8_force(bufsv, blen);
1644 /* UTF-8 may not have been set if they are all low bytes */
1649 buffer = SvPV_force(bufsv, blen);
1650 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
1652 if (DO_UTF8(bufsv)) {
1653 /* offset adjust in characters not bytes */
1654 /* SV's length cache is only safe for non-magical values */
1655 if (SvGMAGICAL(bufsv))
1656 blen = utf8_length((const U8 *)buffer, (const U8 *)buffer + blen);
1658 blen = sv_len_utf8(bufsv);
1667 if (PL_op->op_type == OP_RECV) {
1668 Sock_size_t bufsize;
1669 char namebuf[MAXPATHLEN];
1670 #if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
1671 bufsize = sizeof (struct sockaddr_in);
1673 bufsize = sizeof namebuf;
1675 #ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1679 buffer = SvGROW(bufsv, (STRLEN)(length+1));
1680 /* 'offset' means 'flags' here */
1681 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
1682 (struct sockaddr *)namebuf, &bufsize);
1685 /* MSG_TRUNC can give oversized count; quietly lose it */
1689 /* Bogus return without padding */
1690 bufsize = sizeof (struct sockaddr_in);
1692 SvCUR_set(bufsv, count);
1693 *SvEND(bufsv) = '\0';
1694 (void)SvPOK_only(bufsv);
1698 /* This should not be marked tainted if the fp is marked clean */
1699 if (!(IoFLAGS(io) & IOf_UNTAINT))
1700 SvTAINTED_on(bufsv);
1702 sv_setpvn(TARG, namebuf, bufsize);
1708 if (-offset > (SSize_t)blen)
1709 DIE(aTHX_ "Offset outside string");
1712 if (DO_UTF8(bufsv)) {
1713 /* convert offset-as-chars to offset-as-bytes */
1714 if (offset >= (SSize_t)blen)
1715 offset += SvCUR(bufsv) - blen;
1717 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
1720 orig_size = SvCUR(bufsv);
1721 /* Allocating length + offset + 1 isn't perfect in the case of reading
1722 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1724 (should be 2 * length + offset + 1, or possibly something longer if
1725 PL_encoding is true) */
1726 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
1727 if (offset > 0 && offset > (SSize_t)orig_size) { /* Zero any newly allocated space */
1728 Zero(buffer+orig_size, offset-orig_size, char);
1730 buffer = buffer + offset;
1732 read_target = bufsv;
1734 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1735 concatenate it to the current buffer. */
1737 /* Truncate the existing buffer to the start of where we will be
1739 SvCUR_set(bufsv, offset);
1741 read_target = sv_newmortal();
1742 SvUPGRADE(read_target, SVt_PV);
1743 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1746 if (PL_op->op_type == OP_SYSREAD) {
1747 #ifdef PERL_SOCK_SYSREAD_IS_RECV
1748 if (IoTYPE(io) == IoTYPE_SOCKET) {
1749 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1755 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1760 #ifdef HAS_SOCKET__bad_code_maybe
1761 if (IoTYPE(io) == IoTYPE_SOCKET) {
1762 Sock_size_t bufsize;
1763 char namebuf[MAXPATHLEN];
1764 #if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1765 bufsize = sizeof (struct sockaddr_in);
1767 bufsize = sizeof namebuf;
1769 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
1770 (struct sockaddr *)namebuf, &bufsize);
1775 count = PerlIO_read(IoIFP(io), buffer, length);
1776 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1777 if (count == 0 && PerlIO_error(IoIFP(io)))
1781 if (IoTYPE(io) == IoTYPE_WRONLY)
1782 report_wrongway_fh(gv, '>');
1785 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1786 *SvEND(read_target) = '\0';
1787 (void)SvPOK_only(read_target);
1788 if (fp_utf8 && !IN_BYTES) {
1789 /* Look at utf8 we got back and count the characters */
1790 const char *bend = buffer + count;
1791 while (buffer < bend) {
1793 skip = UTF8SKIP(buffer);
1796 if (buffer - charskip + skip > bend) {
1797 /* partial character - try for rest of it */
1798 length = skip - (bend-buffer);
1799 offset = bend - SvPVX_const(bufsv);
1811 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1812 provided amount read (count) was what was requested (length)
1814 if (got < wanted && count == length) {
1815 length = wanted - got;
1816 offset = bend - SvPVX_const(bufsv);
1819 /* return value is character count */
1823 else if (buffer_utf8) {
1824 /* Let svcatsv upgrade the bytes we read in to utf8.
1825 The buffer is a mortal so will be freed soon. */
1826 sv_catsv_nomg(bufsv, read_target);
1829 /* This should not be marked tainted if the fp is marked clean */
1830 if (!(IoFLAGS(io) & IOf_UNTAINT))
1831 SvTAINTED_on(bufsv);
1843 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
1848 STRLEN orig_blen_bytes;
1849 const int op_type = PL_op->op_type;
1852 GV *const gv = MUTABLE_GV(*++MARK);
1853 IO *const io = GvIO(gv);
1855 if (op_type == OP_SYSWRITE && io) {
1856 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1858 if (MARK == SP - 1) {
1860 mXPUSHi(sv_len(sv));
1864 return Perl_tied_method(aTHX_ "WRITE", mark - 1, MUTABLE_SV(io), mg,
1865 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1875 if (!io || !IoIFP(io) || IoTYPE(io) == IoTYPE_RDONLY) {
1877 if (io && IoIFP(io))
1878 report_wrongway_fh(gv, '<');
1881 SETERRNO(EBADF,RMS_IFI);
1885 /* Do this first to trigger any overloading. */
1886 buffer = SvPV_const(bufsv, blen);
1887 orig_blen_bytes = blen;
1888 doing_utf8 = DO_UTF8(bufsv);
1890 if (PerlIO_isutf8(IoIFP(io))) {
1891 if (!SvUTF8(bufsv)) {
1892 /* We don't modify the original scalar. */
1893 tmpbuf = bytes_to_utf8((const U8*) buffer, &blen);
1894 buffer = (char *) tmpbuf;
1898 else if (doing_utf8) {
1899 STRLEN tmplen = blen;
1900 U8 * const result = bytes_from_utf8((const U8*) buffer, &tmplen, &doing_utf8);
1903 buffer = (char *) tmpbuf;
1907 assert((char *)result == buffer);
1908 Perl_croak(aTHX_ "Wide character in %s", OP_DESC(PL_op));
1913 if (op_type == OP_SEND) {
1914 const int flags = SvIVx(*++MARK);
1917 char * const sockbuf = SvPVx(*++MARK, mlen);
1918 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1919 flags, (struct sockaddr *)sockbuf, mlen);
1923 = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, flags);
1929 Size_t length = 0; /* This length is in characters. */
1935 /* The SV is bytes, and we've had to upgrade it. */
1936 blen_chars = orig_blen_bytes;
1938 /* The SV really is UTF-8. */
1939 if (SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
1940 /* Don't call sv_len_utf8 again because it will call magic
1941 or overloading a second time, and we might get back a
1942 different result. */
1943 blen_chars = utf8_length((U8*)buffer, (U8*)buffer + blen);
1945 /* It's safe, and it may well be cached. */
1946 blen_chars = sv_len_utf8(bufsv);
1954 length = blen_chars;
1956 #if Size_t_size > IVSIZE
1957 length = (Size_t)SvNVx(*++MARK);
1959 length = (Size_t)SvIVx(*++MARK);
1961 if ((SSize_t)length < 0) {
1963 DIE(aTHX_ "Negative length");
1968 offset = SvIVx(*++MARK);
1970 if (-offset > (IV)blen_chars) {
1972 DIE(aTHX_ "Offset outside string");
1974 offset += blen_chars;
1975 } else if (offset > (IV)blen_chars) {
1977 DIE(aTHX_ "Offset outside string");
1981 if (length > blen_chars - offset)
1982 length = blen_chars - offset;
1984 /* Here we convert length from characters to bytes. */
1985 if (tmpbuf || SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
1986 /* Either we had to convert the SV, or the SV is magical, or
1987 the SV has overloading, in which case we can't or mustn't
1988 or mustn't call it again. */
1990 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
1991 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1993 /* It's a real UTF-8 SV, and it's not going to change under
1994 us. Take advantage of any cache. */
1996 I32 len_I32 = length;
1998 /* Convert the start and end character positions to bytes.
1999 Remember that the second argument to sv_pos_u2b is relative
2001 sv_pos_u2b(bufsv, &start, &len_I32);
2008 buffer = buffer+offset;
2010 #ifdef PERL_SOCK_SYSWRITE_IS_SEND
2011 if (IoTYPE(io) == IoTYPE_SOCKET) {
2012 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
2018 /* See the note at doio.c:do_print about filesize limits. --jhi */
2019 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
2028 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
2031 #if Size_t_size > IVSIZE
2051 * in Perl 5.12 and later, the additional parameter is a bitmask:
2054 * 2 = eof() <- ARGV magic
2056 * I'll rely on the compiler's trace flow analysis to decide whether to
2057 * actually assign this out here, or punt it into the only block where it is
2058 * used. Doing it out here is DRY on the condition logic.
2063 gv = PL_last_in_gv = MUTABLE_GV(POPs); /* eof(FH) */
2069 if (PL_op->op_flags & OPf_SPECIAL) {
2070 gv = PL_last_in_gv = GvEGVx(PL_argvgv); /* eof() - ARGV magic */
2074 gv = PL_last_in_gv; /* eof */
2082 if ((io = GvIO(gv)) && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) {
2083 return tied_method1("EOF", SP, MUTABLE_SV(io), mg, newSVuv(which));
2086 if (!MAXARG && (PL_op->op_flags & OPf_SPECIAL)) { /* eof() */
2087 if (io && !IoIFP(io)) {
2088 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
2090 IoFLAGS(io) &= ~IOf_START;
2091 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, NULL);
2093 sv_setpvs(GvSV(gv), "-");
2095 GvSV(gv) = newSVpvs("-");
2096 SvSETMAGIC(GvSV(gv));
2098 else if (!nextargv(gv))
2103 PUSHs(boolSV(do_eof(gv)));
2113 if (MAXARG != 0 && (TOPs || POPs))
2114 PL_last_in_gv = MUTABLE_GV(POPs);
2121 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
2123 return tied_method0("TELL", SP, MUTABLE_SV(io), mg);
2128 SETERRNO(EBADF,RMS_IFI);
2133 #if LSEEKSIZE > IVSIZE
2134 PUSHn( do_tell(gv) );
2136 PUSHi( do_tell(gv) );
2144 const int whence = POPi;
2145 #if LSEEKSIZE > IVSIZE
2146 const Off_t offset = (Off_t)SvNVx(POPs);
2148 const Off_t offset = (Off_t)SvIVx(POPs);
2151 GV * const gv = PL_last_in_gv = MUTABLE_GV(POPs);
2152 IO *const io = GvIO(gv);
2155 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
2157 #if LSEEKSIZE > IVSIZE
2158 SV *const offset_sv = newSVnv((NV) offset);
2160 SV *const offset_sv = newSViv(offset);
2163 return tied_method2("SEEK", SP, MUTABLE_SV(io), mg, offset_sv,
2168 if (PL_op->op_type == OP_SEEK)
2169 PUSHs(boolSV(do_seek(gv, offset, whence)));
2171 const Off_t sought = do_sysseek(gv, offset, whence);
2173 PUSHs(&PL_sv_undef);
2175 SV* const sv = sought ?
2176 #if LSEEKSIZE > IVSIZE
2181 : newSVpvn(zero_but_true, ZBTLEN);
2192 /* There seems to be no consensus on the length type of truncate()
2193 * and ftruncate(), both off_t and size_t have supporters. In
2194 * general one would think that when using large files, off_t is
2195 * at least as wide as size_t, so using an off_t should be okay. */
2196 /* XXX Configure probe for the length type of *truncate() needed XXX */
2199 #if Off_t_size > IVSIZE
2204 /* Checking for length < 0 is problematic as the type might or
2205 * might not be signed: if it is not, clever compilers will moan. */
2206 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
2209 SV * const sv = POPs;
2214 if (PL_op->op_flags & OPf_SPECIAL
2215 ? (tmpgv = gv_fetchsv(sv, 0, SVt_PVIO), 1)
2216 : !!(tmpgv = MAYBE_DEREF_GV(sv)) ) {
2223 TAINT_PROPER("truncate");
2224 if (!(fp = IoIFP(io))) {
2230 if (ftruncate(PerlIO_fileno(fp), len) < 0)
2232 if (my_chsize(PerlIO_fileno(fp), len) < 0)
2238 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2239 io = MUTABLE_IO(SvRV(sv)); /* *main::FRED{IO} for example */
2240 goto do_ftruncate_io;
2243 const char * const name = SvPV_nomg_const_nolen(sv);
2244 TAINT_PROPER("truncate");
2246 if (truncate(name, len) < 0)
2250 const int tmpfd = PerlLIO_open(name, O_RDWR);
2255 if (my_chsize(tmpfd, len) < 0)
2257 PerlLIO_close(tmpfd);
2266 SETERRNO(EBADF,RMS_IFI);
2274 SV * const argsv = POPs;
2275 const unsigned int func = POPu;
2276 const int optype = PL_op->op_type;
2277 GV * const gv = MUTABLE_GV(POPs);
2278 IO * const io = gv ? GvIOn(gv) : NULL;
2282 if (!io || !argsv || !IoIFP(io)) {
2284 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
2288 if (SvPOK(argsv) || !SvNIOK(argsv)) {
2291 s = SvPV_force(argsv, len);
2292 need = IOCPARM_LEN(func);
2294 s = Sv_Grow(argsv, need + 1);
2295 SvCUR_set(argsv, need);
2298 s[SvCUR(argsv)] = 17; /* a little sanity check here */
2301 retval = SvIV(argsv);
2302 s = INT2PTR(char*,retval); /* ouch */
2305 TAINT_PROPER(PL_op_desc[optype]);
2307 if (optype == OP_IOCTL)
2309 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
2311 DIE(aTHX_ "ioctl is not implemented");
2315 DIE(aTHX_ "fcntl is not implemented");
2317 #if defined(OS2) && defined(__EMX__)
2318 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
2320 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
2324 #if defined(HAS_IOCTL) || defined(HAS_FCNTL)
2326 if (s[SvCUR(argsv)] != 17)
2327 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
2329 s[SvCUR(argsv)] = 0; /* put our null back */
2330 SvSETMAGIC(argsv); /* Assume it has changed */
2339 PUSHp(zero_but_true, ZBTLEN);
2350 const int argtype = POPi;
2351 GV * const gv = MUTABLE_GV(POPs);
2352 IO *const io = GvIO(gv);
2353 PerlIO *const fp = io ? IoIFP(io) : NULL;
2355 /* XXX Looks to me like io is always NULL at this point */
2357 (void)PerlIO_flush(fp);
2358 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
2363 SETERRNO(EBADF,RMS_IFI);
2368 DIE(aTHX_ PL_no_func, "flock()");
2379 const int protocol = POPi;
2380 const int type = POPi;
2381 const int domain = POPi;
2382 GV * const gv = MUTABLE_GV(POPs);
2383 IO * const io = gv ? GvIOn(gv) : NULL;
2388 if (io && IoIFP(io))
2389 do_close(gv, FALSE);
2390 SETERRNO(EBADF,LIB_INVARG);
2395 do_close(gv, FALSE);
2397 TAINT_PROPER("socket");
2398 fd = PerlSock_socket(domain, type, protocol);
2401 IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2402 IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
2403 IoTYPE(io) = IoTYPE_SOCKET;
2404 if (!IoIFP(io) || !IoOFP(io)) {
2405 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2406 if (IoOFP(io)) PerlIO_close(IoOFP(io));
2407 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
2410 #if defined(HAS_FCNTL) && defined(F_SETFD)
2411 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2415 setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
2424 #if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
2426 const int protocol = POPi;
2427 const int type = POPi;
2428 const int domain = POPi;
2429 GV * const gv2 = MUTABLE_GV(POPs);
2430 GV * const gv1 = MUTABLE_GV(POPs);
2431 IO * const io1 = gv1 ? GvIOn(gv1) : NULL;
2432 IO * const io2 = gv2 ? GvIOn(gv2) : NULL;
2436 report_evil_fh(gv1);
2438 report_evil_fh(gv2);
2440 if (io1 && IoIFP(io1))
2441 do_close(gv1, FALSE);
2442 if (io2 && IoIFP(io2))
2443 do_close(gv2, FALSE);
2448 TAINT_PROPER("socketpair");
2449 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
2451 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2452 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
2453 IoTYPE(io1) = IoTYPE_SOCKET;
2454 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2455 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
2456 IoTYPE(io2) = IoTYPE_SOCKET;
2457 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
2458 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2459 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
2460 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
2461 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2462 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
2463 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
2466 #if defined(HAS_FCNTL) && defined(F_SETFD)
2467 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2468 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2473 DIE(aTHX_ PL_no_sock_func, "socketpair");
2482 SV * const addrsv = POPs;
2483 /* OK, so on what platform does bind modify addr? */
2485 GV * const gv = MUTABLE_GV(POPs);
2486 IO * const io = GvIOn(gv);
2488 const int op_type = PL_op->op_type;
2490 if (!io || !IoIFP(io))
2493 addr = SvPV_const(addrsv, len);
2494 TAINT_PROPER(PL_op_desc[op_type]);
2495 if ((op_type == OP_BIND
2496 ? PerlSock_bind(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len)
2497 : PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len))
2505 SETERRNO(EBADF,SS_IVCHAN);
2512 const int backlog = POPi;
2513 GV * const gv = MUTABLE_GV(POPs);
2514 IO * const io = gv ? GvIOn(gv) : NULL;
2516 if (!io || !IoIFP(io))
2519 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
2526 SETERRNO(EBADF,SS_IVCHAN);
2535 char namebuf[MAXPATHLEN];
2536 #if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
2537 Sock_size_t len = sizeof (struct sockaddr_in);
2539 Sock_size_t len = sizeof namebuf;
2541 GV * const ggv = MUTABLE_GV(POPs);
2542 GV * const ngv = MUTABLE_GV(POPs);
2551 if (!gstio || !IoIFP(gstio))
2555 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
2558 /* Some platforms indicate zero length when an AF_UNIX client is
2559 * not bound. Simulate a non-zero-length sockaddr structure in
2561 namebuf[0] = 0; /* sun_len */
2562 namebuf[1] = AF_UNIX; /* sun_family */
2570 do_close(ngv, FALSE);
2571 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2572 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
2573 IoTYPE(nstio) = IoTYPE_SOCKET;
2574 if (!IoIFP(nstio) || !IoOFP(nstio)) {
2575 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2576 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
2577 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
2580 #if defined(HAS_FCNTL) && defined(F_SETFD)
2581 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2585 len = sizeof (struct sockaddr_in); /* EPOC somehow truncates info */
2586 setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
2588 #ifdef __SCO_VERSION__
2589 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
2592 PUSHp(namebuf, len);
2596 report_evil_fh(ggv);
2597 SETERRNO(EBADF,SS_IVCHAN);
2607 const int how = POPi;
2608 GV * const gv = MUTABLE_GV(POPs);
2609 IO * const io = GvIOn(gv);
2611 if (!io || !IoIFP(io))
2614 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
2619 SETERRNO(EBADF,SS_IVCHAN);
2626 const int optype = PL_op->op_type;
2627 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
2628 const unsigned int optname = (unsigned int) POPi;
2629 const unsigned int lvl = (unsigned int) POPi;
2630 GV * const gv = MUTABLE_GV(POPs);
2631 IO * const io = GvIOn(gv);
2635 if (!io || !IoIFP(io))
2638 fd = PerlIO_fileno(IoIFP(io));
2642 (void)SvPOK_only(sv);
2646 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
2653 #if defined(__SYMBIAN32__)
2654 # define SETSOCKOPT_OPTION_VALUE_T void *
2656 # define SETSOCKOPT_OPTION_VALUE_T const char *
2658 /* XXX TODO: We need to have a proper type (a Configure probe,
2659 * etc.) for what the C headers think of the third argument of
2660 * setsockopt(), the option_value read-only buffer: is it
2661 * a "char *", or a "void *", const or not. Some compilers
2662 * don't take kindly to e.g. assuming that "char *" implicitly
2663 * promotes to a "void *", or to explicitly promoting/demoting
2664 * consts to non/vice versa. The "const void *" is the SUS
2665 * definition, but that does not fly everywhere for the above
2667 SETSOCKOPT_OPTION_VALUE_T buf;
2671 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2675 aint = (int)SvIV(sv);
2676 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
2679 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
2689 SETERRNO(EBADF,SS_IVCHAN);
2698 const int optype = PL_op->op_type;
2699 GV * const gv = MUTABLE_GV(POPs);
2700 IO * const io = GvIOn(gv);
2705 if (!io || !IoIFP(io))
2708 sv = sv_2mortal(newSV(257));
2709 (void)SvPOK_only(sv);
2713 fd = PerlIO_fileno(IoIFP(io));
2715 case OP_GETSOCKNAME:
2716 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2719 case OP_GETPEERNAME:
2720 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2722 #if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2724 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";
2725 /* If the call succeeded, make sure we don't have a zeroed port/addr */
2726 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2727 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
2728 sizeof(u_short) + sizeof(struct in_addr))) {
2735 #ifdef BOGUS_GETNAME_RETURN
2736 /* Interactive Unix, getpeername() and getsockname()
2737 does not return valid namelen */
2738 if (len == BOGUS_GETNAME_RETURN)
2739 len = sizeof(struct sockaddr);
2748 SETERRNO(EBADF,SS_IVCHAN);
2767 if (PL_op->op_flags & OPf_REF ? (gv = cGVOP_gv, 1)
2768 : !!(sv=POPs, gv = MAYBE_DEREF_GV(sv))) {
2769 if (PL_op->op_type == OP_LSTAT) {
2770 if (gv != PL_defgv) {
2771 do_fstat_warning_check:
2772 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
2773 "lstat() on filehandle%s%"SVf,
2776 ? sv_2mortal(newSVhek(GvENAME_HEK(gv)))
2778 } else if (PL_laststype != OP_LSTAT)
2779 /* diag_listed_as: The stat preceding %s wasn't an lstat */
2780 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
2783 if (gv != PL_defgv) {
2787 PL_laststype = OP_STAT;
2788 PL_statgv = gv ? gv : (GV *)io;
2789 sv_setpvs(PL_statname, "");
2796 PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
2798 } else if (IoDIRP(io)) {
2800 PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache);
2803 PL_laststatval = -1;
2806 else PL_laststatval = -1;
2807 if (PL_laststatval < 0 && !havefp) report_evil_fh(gv);
2810 if (PL_laststatval < 0) {
2815 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2816 io = MUTABLE_IO(SvRV(sv));
2817 if (PL_op->op_type == OP_LSTAT)
2818 goto do_fstat_warning_check;
2819 goto do_fstat_have_io;
2822 SvTAINTED_off(PL_statname); /* previous tainting irrelevant */
2823 sv_setpv(PL_statname, SvPV_nomg_const_nolen(sv));
2825 PL_laststype = PL_op->op_type;
2826 if (PL_op->op_type == OP_LSTAT)
2827 PL_laststatval = PerlLIO_lstat(SvPV_nolen_const(PL_statname), &PL_statcache);
2829 PL_laststatval = PerlLIO_stat(SvPV_nolen_const(PL_statname), &PL_statcache);
2830 if (PL_laststatval < 0) {
2831 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname), '\n'))
2832 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
2838 if (gimme != G_ARRAY) {
2839 if (gimme != G_VOID)
2840 XPUSHs(boolSV(max));
2846 mPUSHi(PL_statcache.st_dev);
2847 #if ST_INO_SIZE > IVSIZE
2848 mPUSHn(PL_statcache.st_ino);
2850 # if ST_INO_SIGN <= 0
2851 mPUSHi(PL_statcache.st_ino);
2853 mPUSHu(PL_statcache.st_ino);
2856 mPUSHu(PL_statcache.st_mode);
2857 mPUSHu(PL_statcache.st_nlink);
2858 #if Uid_t_size > IVSIZE
2859 mPUSHn(PL_statcache.st_uid);
2861 # if Uid_t_sign <= 0
2862 mPUSHi(PL_statcache.st_uid);
2864 mPUSHu(PL_statcache.st_uid);
2867 #if Gid_t_size > IVSIZE
2868 mPUSHn(PL_statcache.st_gid);
2870 # if Gid_t_sign <= 0
2871 mPUSHi(PL_statcache.st_gid);
2873 mPUSHu(PL_statcache.st_gid);
2876 #ifdef USE_STAT_RDEV
2877 mPUSHi(PL_statcache.st_rdev);
2879 PUSHs(newSVpvs_flags("", SVs_TEMP));
2881 #if Off_t_size > IVSIZE
2882 mPUSHn(PL_statcache.st_size);
2884 mPUSHi(PL_statcache.st_size);
2887 mPUSHn(PL_statcache.st_atime);
2888 mPUSHn(PL_statcache.st_mtime);
2889 mPUSHn(PL_statcache.st_ctime);
2891 mPUSHi(PL_statcache.st_atime);
2892 mPUSHi(PL_statcache.st_mtime);
2893 mPUSHi(PL_statcache.st_ctime);
2895 #ifdef USE_STAT_BLOCKS
2896 mPUSHu(PL_statcache.st_blksize);
2897 mPUSHu(PL_statcache.st_blocks);
2899 PUSHs(newSVpvs_flags("", SVs_TEMP));
2900 PUSHs(newSVpvs_flags("", SVs_TEMP));
2906 /* All filetest ops avoid manipulating the perl stack pointer in their main
2907 bodies (since commit d2c4d2d1e22d3125), and return using either
2908 S_ft_return_false() or S_ft_return_true(). These two helper functions are
2909 the only two which manipulate the perl stack. To ensure that no stack
2910 manipulation macros are used, the filetest ops avoid defining a local copy
2911 of the stack pointer with dSP. */
2913 /* If the next filetest is stacked up with this one
2914 (PL_op->op_private & OPpFT_STACKING), we leave
2915 the original argument on the stack for success,
2916 and skip the stacked operators on failure.
2917 The next few macros/functions take care of this.
2921 S_ft_return_false(pTHX_ SV *ret) {
2925 if (PL_op->op_flags & OPf_REF) XPUSHs(ret);
2929 if (PL_op->op_private & OPpFT_STACKING) {
2930 while (OP_IS_FILETEST(next->op_type)
2931 && next->op_private & OPpFT_STACKED)
2932 next = next->op_next;
2937 PERL_STATIC_INLINE OP *
2938 S_ft_return_true(pTHX_ SV *ret) {
2940 if (PL_op->op_flags & OPf_REF)
2941 XPUSHs(PL_op->op_private & OPpFT_STACKING ? (SV *)cGVOP_gv : (ret));
2942 else if (!(PL_op->op_private & OPpFT_STACKING))
2948 #define FT_RETURNNO return S_ft_return_false(aTHX_ &PL_sv_no)
2949 #define FT_RETURNUNDEF return S_ft_return_false(aTHX_ &PL_sv_undef)
2950 #define FT_RETURNYES return S_ft_return_true(aTHX_ &PL_sv_yes)
2952 #define tryAMAGICftest_MG(chr) STMT_START { \
2953 if ( (SvFLAGS(*PL_stack_sp) & (SVf_ROK|SVs_GMG)) \
2954 && PL_op->op_flags & OPf_KIDS) { \
2955 OP *next = S_try_amagic_ftest(aTHX_ chr); \
2956 if (next) return next; \
2961 S_try_amagic_ftest(pTHX_ char chr) {
2963 SV *const arg = *PL_stack_sp;
2966 if (!(PL_op->op_private & OPpFT_STACKING)) SvGETMAGIC(arg);
2970 const char tmpchr = chr;
2971 SV * const tmpsv = amagic_call(arg,
2972 newSVpvn_flags(&tmpchr, 1, SVs_TEMP),
2973 ftest_amg, AMGf_unary);
2978 return SvTRUE(tmpsv)
2979 ? S_ft_return_true(aTHX_ tmpsv) : S_ft_return_false(aTHX_ tmpsv);
2989 /* Not const, because things tweak this below. Not bool, because there's
2990 no guarantee that OPp_FT_ACCESS is <= CHAR_MAX */
2991 #if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2992 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
2993 /* Giving some sort of initial value silences compilers. */
2995 int access_mode = R_OK;
2997 int access_mode = 0;
3000 /* access_mode is never used, but leaving use_access in makes the
3001 conditional compiling below much clearer. */
3004 Mode_t stat_mode = S_IRUSR;
3006 bool effective = FALSE;
3009 switch (PL_op->op_type) {
3010 case OP_FTRREAD: opchar = 'R'; break;
3011 case OP_FTRWRITE: opchar = 'W'; break;
3012 case OP_FTREXEC: opchar = 'X'; break;
3013 case OP_FTEREAD: opchar = 'r'; break;
3014 case OP_FTEWRITE: opchar = 'w'; break;
3015 case OP_FTEEXEC: opchar = 'x'; break;
3017 tryAMAGICftest_MG(opchar);
3019 switch (PL_op->op_type) {
3021 #if !(defined(HAS_ACCESS) && defined(R_OK))
3027 #if defined(HAS_ACCESS) && defined(W_OK)
3032 stat_mode = S_IWUSR;
3036 #if defined(HAS_ACCESS) && defined(X_OK)
3041 stat_mode = S_IXUSR;
3045 #ifdef PERL_EFF_ACCESS
3048 stat_mode = S_IWUSR;
3052 #ifndef PERL_EFF_ACCESS
3059 #ifdef PERL_EFF_ACCESS
3064 stat_mode = S_IXUSR;
3070 #if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
3071 const char *name = SvPV_nolen(*PL_stack_sp);
3073 # ifdef PERL_EFF_ACCESS
3074 result = PERL_EFF_ACCESS(name, access_mode);
3076 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
3082 result = access(name, access_mode);
3084 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
3095 result = my_stat_flags(0);
3098 if (cando(stat_mode, effective, &PL_statcache))
3107 const int op_type = PL_op->op_type;
3111 case OP_FTIS: opchar = 'e'; break;
3112 case OP_FTSIZE: opchar = 's'; break;
3113 case OP_FTMTIME: opchar = 'M'; break;
3114 case OP_FTCTIME: opchar = 'C'; break;
3115 case OP_FTATIME: opchar = 'A'; break;
3117 tryAMAGICftest_MG(opchar);
3119 result = my_stat_flags(0);
3122 if (op_type == OP_FTIS)
3125 /* You can't dTARGET inside OP_FTIS, because you'll get
3126 "panic: pad_sv po" - the op is not flagged to have a target. */
3130 #if Off_t_size > IVSIZE
3131 sv_setnv(TARG, (NV)PL_statcache.st_size);
3133 sv_setiv(TARG, (IV)PL_statcache.st_size);
3138 ((NV)PL_basetime - PL_statcache.st_mtime) / 86400.0 );
3142 ((NV)PL_basetime - PL_statcache.st_atime) / 86400.0 );
3146 ((NV)PL_basetime - PL_statcache.st_ctime) / 86400.0 );
3150 return SvTRUE_nomg(TARG)
3151 ? S_ft_return_true(aTHX_ TARG) : S_ft_return_false(aTHX_ TARG);
3161 switch (PL_op->op_type) {
3162 case OP_FTROWNED: opchar = 'O'; break;
3163 case OP_FTEOWNED: opchar = 'o'; break;
3164 case OP_FTZERO: opchar = 'z'; break;
3165 case OP_FTSOCK: opchar = 'S'; break;
3166 case OP_FTCHR: opchar = 'c'; break;
3167 case OP_FTBLK: opchar = 'b'; break;
3168 case OP_FTFILE: opchar = 'f'; break;
3169 case OP_FTDIR: opchar = 'd'; break;
3170 case OP_FTPIPE: opchar = 'p'; break;
3171 case OP_FTSUID: opchar = 'u'; break;
3172 case OP_FTSGID: opchar = 'g'; break;
3173 case OP_FTSVTX: opchar = 'k'; break;
3175 tryAMAGICftest_MG(opchar);
3177 /* I believe that all these three are likely to be defined on most every
3178 system these days. */
3180 if(PL_op->op_type == OP_FTSUID) {
3185 if(PL_op->op_type == OP_FTSGID) {
3190 if(PL_op->op_type == OP_FTSVTX) {
3195 result = my_stat_flags(0);
3198 switch (PL_op->op_type) {
3200 if (PL_statcache.st_uid == PerlProc_getuid())
3204 if (PL_statcache.st_uid == PerlProc_geteuid())
3208 if (PL_statcache.st_size == 0)
3212 if (S_ISSOCK(PL_statcache.st_mode))
3216 if (S_ISCHR(PL_statcache.st_mode))
3220 if (S_ISBLK(PL_statcache.st_mode))
3224 if (S_ISREG(PL_statcache.st_mode))
3228 if (S_ISDIR(PL_statcache.st_mode))
3232 if (S_ISFIFO(PL_statcache.st_mode))
3237 if (PL_statcache.st_mode & S_ISUID)
3243 if (PL_statcache.st_mode & S_ISGID)
3249 if (PL_statcache.st_mode & S_ISVTX)
3262 tryAMAGICftest_MG('l');
3263 result = my_lstat_flags(0);
3267 if (S_ISLNK(PL_statcache.st_mode))
3280 tryAMAGICftest_MG('t');
3282 if (PL_op->op_flags & OPf_REF)
3285 SV *tmpsv = *PL_stack_sp;
3286 if (!(gv = MAYBE_DEREF_GV_nomg(tmpsv))) {
3287 name = SvPV_nomg(tmpsv, namelen);
3288 gv = gv_fetchpvn_flags(name, namelen, SvUTF8(tmpsv), SVt_PVIO);
3292 if (GvIO(gv) && IoIFP(GvIOp(gv)))
3293 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
3294 else if (name && isDIGIT(*name))
3298 if (PerlLIO_isatty(fd))
3316 tryAMAGICftest_MG(PL_op->op_type == OP_FTTEXT ? 'T' : 'B');
3318 if (PL_op->op_flags & OPf_REF)
3320 else if ((PL_op->op_private & (OPpFT_STACKED|OPpFT_AFTER_t))
3325 gv = MAYBE_DEREF_GV_nomg(sv);
3329 if (gv == PL_defgv) {
3331 io = SvTYPE(PL_statgv) == SVt_PVIO
3335 goto really_filename;
3340 sv_setpvs(PL_statname, "");
3341 io = GvIO(PL_statgv);
3343 PL_laststatval = -1;
3344 PL_laststype = OP_STAT;
3345 if (io && IoIFP(io)) {
3346 if (! PerlIO_has_base(IoIFP(io)))
3347 DIE(aTHX_ "-T and -B not implemented on filehandles");
3348 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3349 if (PL_laststatval < 0)
3351 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
3352 if (PL_op->op_type == OP_FTTEXT)
3357 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
3358 i = PerlIO_getc(IoIFP(io));
3360 (void)PerlIO_ungetc(IoIFP(io),i);
3362 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
3364 len = PerlIO_get_bufsiz(IoIFP(io));
3365 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
3366 /* sfio can have large buffers - limit to 512 */
3371 SETERRNO(EBADF,RMS_IFI);
3373 SETERRNO(EBADF,RMS_IFI);
3378 sv_setpv(PL_statname, SvPV_nomg_const_nolen(sv));
3381 if (!(fp = PerlIO_open(SvPVX_const(PL_statname), "r"))) {
3383 PL_laststatval = -1;
3384 PL_laststype = OP_STAT;
3386 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname),
3388 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
3391 PL_laststype = OP_STAT;
3392 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(fp), &PL_statcache);
3393 if (PL_laststatval < 0) {
3394 (void)PerlIO_close(fp);
3397 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, NULL);
3398 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3399 (void)PerlIO_close(fp);
3401 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
3402 FT_RETURNNO; /* special case NFS directories */
3403 FT_RETURNYES; /* null file is anything */
3408 /* now scan s to look for textiness */
3409 /* XXX ASCII dependent code */
3411 #if defined(DOSISH) || defined(USEMYBINMODE)
3412 /* ignore trailing ^Z on short files */
3413 if (len && len < (I32)sizeof(tbuf) && tbuf[len-1] == 26)
3417 for (i = 0; i < len; i++, s++) {
3418 if (!*s) { /* null never allowed in text */
3423 else if (!(isPRINT(*s) || isSPACE(*s)))
3426 else if (*s & 128) {
3428 if (IN_LOCALE_RUNTIME && isALPHA_LC(*s))
3431 /* utf8 characters don't count as odd */
3432 if (UTF8_IS_START(*s)) {
3433 int ulen = UTF8SKIP(s);
3434 if (ulen < len - i) {
3436 for (j = 1; j < ulen; j++) {
3437 if (!UTF8_IS_CONTINUATION(s[j]))
3440 --ulen; /* loop does extra increment */
3450 *s != '\n' && *s != '\r' && *s != '\b' &&
3451 *s != '\t' && *s != '\f' && *s != 27)
3456 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
3467 const char *tmps = NULL;
3471 SV * const sv = POPs;
3472 if (PL_op->op_flags & OPf_SPECIAL) {
3473 gv = gv_fetchsv(sv, 0, SVt_PVIO);
3475 else if (!(gv = MAYBE_DEREF_GV(sv)))
3476 tmps = SvPV_nomg_const_nolen(sv);
3479 if( !gv && (!tmps || !*tmps) ) {
3480 HV * const table = GvHVn(PL_envgv);
3483 if ( (svp = hv_fetchs(table, "HOME", FALSE))
3484 || (svp = hv_fetchs(table, "LOGDIR", FALSE))
3486 || (svp = hv_fetchs(table, "SYS$LOGIN", FALSE))
3491 deprecate("chdir('') or chdir(undef) as chdir()");
3492 tmps = SvPV_nolen_const(*svp);
3496 TAINT_PROPER("chdir");
3501 TAINT_PROPER("chdir");
3504 IO* const io = GvIO(gv);
3507 PUSHi(fchdir(my_dirfd(IoDIRP(io))) >= 0);
3508 } else if (IoIFP(io)) {
3509 PUSHi(fchdir(PerlIO_fileno(IoIFP(io))) >= 0);
3513 SETERRNO(EBADF, RMS_IFI);
3519 SETERRNO(EBADF,RMS_IFI);
3523 DIE(aTHX_ PL_no_func, "fchdir");
3527 PUSHi( PerlDir_chdir(tmps) >= 0 );
3529 /* Clear the DEFAULT element of ENV so we'll get the new value
3531 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
3538 dVAR; dSP; dMARK; dTARGET;
3539 const I32 value = (I32)apply(PL_op->op_type, MARK, SP);
3550 char * const tmps = POPpx;
3551 TAINT_PROPER("chroot");
3552 PUSHi( chroot(tmps) >= 0 );
3555 DIE(aTHX_ PL_no_func, "chroot");
3563 const char * const tmps2 = POPpconstx;
3564 const char * const tmps = SvPV_nolen_const(TOPs);
3565 TAINT_PROPER("rename");
3567 anum = PerlLIO_rename(tmps, tmps2);
3569 if (!(anum = PerlLIO_stat(tmps, &PL_statbuf))) {
3570 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3573 if (PerlProc_geteuid() || PerlLIO_stat(tmps2, &PL_statbuf) < 0 || !S_ISDIR(PL_statbuf.st_mode))
3574 (void)UNLINK(tmps2);
3575 if (!(anum = link(tmps, tmps2)))
3576 anum = UNLINK(tmps);
3584 #if defined(HAS_LINK) || defined(HAS_SYMLINK)
3588 const int op_type = PL_op->op_type;
3592 if (op_type == OP_LINK)
3593 DIE(aTHX_ PL_no_func, "link");
3595 # ifndef HAS_SYMLINK
3596 if (op_type == OP_SYMLINK)
3597 DIE(aTHX_ PL_no_func, "symlink");
3601 const char * const tmps2 = POPpconstx;
3602 const char * const tmps = SvPV_nolen_const(TOPs);
3603 TAINT_PROPER(PL_op_desc[op_type]);
3605 # if defined(HAS_LINK)
3606 # if defined(HAS_SYMLINK)
3607 /* Both present - need to choose which. */
3608 (op_type == OP_LINK) ?
3609 PerlLIO_link(tmps, tmps2) : symlink(tmps, tmps2);
3611 /* Only have link, so calls to pp_symlink will have DIE()d above. */
3612 PerlLIO_link(tmps, tmps2);
3615 # if defined(HAS_SYMLINK)
3616 /* Only have symlink, so calls to pp_link will have DIE()d above. */
3617 symlink(tmps, tmps2);
3622 SETi( result >= 0 );
3629 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
3640 char buf[MAXPATHLEN];
3643 #ifndef INCOMPLETE_TAINTS
3647 len = readlink(tmps, buf, sizeof(buf) - 1);
3654 RETSETUNDEF; /* just pretend it's a normal file */
3658 #if !defined(HAS_MKDIR) || !defined(HAS_RMDIR)
3660 S_dooneliner(pTHX_ const char *cmd, const char *filename)
3662 char * const save_filename = filename;
3667 Size_t size = strlen(cmd) + (strlen(filename) * 2) + 10;
3669 PERL_ARGS_ASSERT_DOONELINER;
3671 Newx(cmdline, size, char);
3672 my_strlcpy(cmdline, cmd, size);
3673 my_strlcat(cmdline, " ", size);
3674 for (s = cmdline + strlen(cmdline); *filename; ) {
3678 if (s - cmdline < size)
3679 my_strlcpy(s, " 2>&1", size - (s - cmdline));
3680 myfp = PerlProc_popen(cmdline, "r");
3684 SV * const tmpsv = sv_newmortal();
3685 /* Need to save/restore 'PL_rs' ?? */
3686 s = sv_gets(tmpsv, myfp, 0);
3687 (void)PerlProc_pclose(myfp);
3691 #ifdef HAS_SYS_ERRLIST
3696 /* you don't see this */
3697 const char * const errmsg =
3698 #ifdef HAS_SYS_ERRLIST
3706 if (instr(s, errmsg)) {
3713 #define EACCES EPERM
3715 if (instr(s, "cannot make"))
3716 SETERRNO(EEXIST,RMS_FEX);
3717 else if (instr(s, "existing file"))
3718 SETERRNO(EEXIST,RMS_FEX);
3719 else if (instr(s, "ile exists"))
3720 SETERRNO(EEXIST,RMS_FEX);
3721 else if (instr(s, "non-exist"))
3722 SETERRNO(ENOENT,RMS_FNF);
3723 else if (instr(s, "does not exist"))
3724 SETERRNO(ENOENT,RMS_FNF);
3725 else if (instr(s, "not empty"))
3726 SETERRNO(EBUSY,SS_DEVOFFLINE);
3727 else if (instr(s, "cannot access"))
3728 SETERRNO(EACCES,RMS_PRV);
3730 SETERRNO(EPERM,RMS_PRV);
3733 else { /* some mkdirs return no failure indication */
3734 anum = (PerlLIO_stat(save_filename, &PL_statbuf) >= 0);
3735 if (PL_op->op_type == OP_RMDIR)
3740 SETERRNO(EACCES,RMS_PRV); /* a guess */
3749 /* This macro removes trailing slashes from a directory name.
3750 * Different operating and file systems take differently to
3751 * trailing slashes. According to POSIX 1003.1 1996 Edition
3752 * any number of trailing slashes should be allowed.
3753 * Thusly we snip them away so that even non-conforming
3754 * systems are happy.
3755 * We should probably do this "filtering" for all
3756 * the functions that expect (potentially) directory names:
3757 * -d, chdir(), chmod(), chown(), chroot(), fcntl()?,
3758 * (mkdir()), opendir(), rename(), rmdir(), stat(). --jhi */
3760 #define TRIMSLASHES(tmps,len,copy) (tmps) = SvPV_const(TOPs, (len)); \
3761 if ((len) > 1 && (tmps)[(len)-1] == '/') { \
3764 } while ((len) > 1 && (tmps)[(len)-1] == '/'); \
3765 (tmps) = savepvn((tmps), (len)); \
3775 const int mode = (MAXARG > 1 && (TOPs||((void)POPs,0))) ? POPi : 0777;
3777 TRIMSLASHES(tmps,len,copy);
3779 TAINT_PROPER("mkdir");
3781 SETi( PerlDir_mkdir(tmps, mode) >= 0 );
3785 SETi( dooneliner("mkdir", tmps) );
3786 oldumask = PerlLIO_umask(0);
3787 PerlLIO_umask(oldumask);
3788 PerlLIO_chmod(tmps, (mode & ~oldumask) & 0777);
3803 TRIMSLASHES(tmps,len,copy);
3804 TAINT_PROPER("rmdir");
3806 SETi( PerlDir_rmdir(tmps) >= 0 );
3808 SETi( dooneliner("rmdir", tmps) );
3815 /* Directory calls. */
3819 #if defined(Direntry_t) && defined(HAS_READDIR)
3821 const char * const dirname = POPpconstx;
3822 GV * const gv = MUTABLE_GV(POPs);
3823 IO * const io = GvIOn(gv);
3828 if ((IoIFP(io) || IoOFP(io)))
3829 Perl_ck_warner_d(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
3830 "Opening filehandle %"HEKf" also as a directory",
3831 HEKfARG(GvENAME_HEK(gv)) );
3833 PerlDir_close(IoDIRP(io));
3834 if (!(IoDIRP(io) = PerlDir_open(dirname)))
3840 SETERRNO(EBADF,RMS_DIR);
3843 DIE(aTHX_ PL_no_dir_func, "opendir");
3849 #if !defined(Direntry_t) || !defined(HAS_READDIR)
3850 DIE(aTHX_ PL_no_dir_func, "readdir");
3852 #if !defined(I_DIRENT) && !defined(VMS)
3853 Direntry_t *readdir (DIR *);
3859 const I32 gimme = GIMME;
3860 GV * const gv = MUTABLE_GV(POPs);
3861 const Direntry_t *dp;
3862 IO * const io = GvIOn(gv);
3864 if (!io || !IoDIRP(io)) {
3865 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
3866 "readdir() attempted on invalid dirhandle %"HEKf,
3867 HEKfARG(GvENAME_HEK(gv)));
3872 dp = (Direntry_t *)PerlDir_read(IoDIRP(io));
3876 sv = newSVpvn(dp->d_name, dp->d_namlen);
3878 sv = newSVpv(dp->d_name, 0);
3880 #ifndef INCOMPLETE_TAINTS
3881 if (!(IoFLAGS(io) & IOf_UNTAINT))
3885 } while (gimme == G_ARRAY);
3887 if (!dp && gimme != G_ARRAY)
3894 SETERRNO(EBADF,RMS_ISI);
3895 if (GIMME == G_ARRAY)
3904 #if defined(HAS_TELLDIR) || defined(telldir)
3906 /* XXX does _anyone_ need this? --AD 2/20/1998 */
3907 /* XXX netbsd still seemed to.
3908 XXX HAS_TELLDIR_PROTO is new style, NEED_TELLDIR_PROTO is old style.
3909 --JHI 1999-Feb-02 */
3910 # if !defined(HAS_TELLDIR_PROTO) || defined(NEED_TELLDIR_PROTO)
3911 long telldir (DIR *);
3913 GV * const gv = MUTABLE_GV(POPs);
3914 IO * const io = GvIOn(gv);
3916 if (!io || !IoDIRP(io)) {
3917 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
3918 "telldir() attempted on invalid dirhandle %"HEKf,
3919 HEKfARG(GvENAME_HEK(gv)));
3923 PUSHi( PerlDir_tell(IoDIRP(io)) );
3927 SETERRNO(EBADF,RMS_ISI);
3930 DIE(aTHX_ PL_no_dir_func, "telldir");
3936 #if defined(HAS_SEEKDIR) || defined(seekdir)
3938 const long along = POPl;
3939 GV * const gv = MUTABLE_GV(POPs);
3940 IO * const io = GvIOn(gv);
3942 if (!io || !IoDIRP(io)) {
3943 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
3944 "seekdir() attempted on invalid dirhandle %"HEKf,
3945 HEKfARG(GvENAME_HEK(gv)));
3948 (void)PerlDir_seek(IoDIRP(io), along);
3953 SETERRNO(EBADF,RMS_ISI);
3956 DIE(aTHX_ PL_no_dir_func, "seekdir");
3962 #if defined(HAS_REWINDDIR) || defined(rewinddir)
3964 GV * const gv = MUTABLE_GV(POPs);
3965 IO * const io = GvIOn(gv);
3967 if (!io || !IoDIRP(io)) {
3968 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
3969 "rewinddir() attempted on invalid dirhandle %"HEKf,
3970 HEKfARG(GvENAME_HEK(gv)));
3973 (void)PerlDir_rewind(IoDIRP(io));
3977 SETERRNO(EBADF,RMS_ISI);
3980 DIE(aTHX_ PL_no_dir_func, "rewinddir");
3986 #if defined(Direntry_t) && defined(HAS_READDIR)
3988 GV * const gv = MUTABLE_GV(POPs);
3989 IO * const io = GvIOn(gv);
3991 if (!io || !IoDIRP(io)) {
3992 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
3993 "closedir() attempted on invalid dirhandle %"HEKf,
3994 HEKfARG(GvENAME_HEK(gv)));
3997 #ifdef VOID_CLOSEDIR
3998 PerlDir_close(IoDIRP(io));
4000 if (PerlDir_close(IoDIRP(io)) < 0) {
4001 IoDIRP(io) = 0; /* Don't try to close again--coredumps on SysV */
4010 SETERRNO(EBADF,RMS_IFI);
4013 DIE(aTHX_ PL_no_dir_func, "closedir");
4017 /* Process control. */
4024 #if defined(HAS_SIGPROCMASK) && !defined(PERL_MICRO)
4025 sigset_t oldmask, newmask;
4029 PERL_FLUSHALL_FOR_CHILD;
4030 #if defined(HAS_SIGPROCMASK) && !defined(PERL_MICRO)
4031 sigfillset(&newmask);
4032 sigprocmask(SIG_SETMASK, &newmask, &oldmask);
4034 childpid = PerlProc_fork();
4035 if (childpid == 0) {
4039 for (sig = 1; sig < SIG_SIZE; sig++)
4040 PL_psig_pend[sig] = 0;
4042 #if defined(HAS_SIGPROCMASK) && !defined(PERL_MICRO)
4045 sigprocmask(SIG_SETMASK, &oldmask, NULL);
4052 #ifdef PERL_USES_PL_PIDSTATUS
4053 hv_clear(PL_pidstatus); /* no kids, so don't wait for 'em */
4059 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4064 PERL_FLUSHALL_FOR_CHILD;
4065 childpid = PerlProc_fork();
4071 DIE(aTHX_ PL_no_func, "fork");
4078 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(__LIBCATAMOUNT__)
4083 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
4084 childpid = wait4pid(-1, &argflags, 0);
4086 while ((childpid = wait4pid(-1, &argflags, 0)) == -1 &&
4091 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4092 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
4093 STATUS_NATIVE_CHILD_SET((childpid && childpid != -1) ? argflags : -1);
4095 STATUS_NATIVE_CHILD_SET((childpid > 0) ? argflags : -1);
4100 DIE(aTHX_ PL_no_func, "wait");
4106 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(__LIBCATAMOUNT__)
4108 const int optype = POPi;
4109 const Pid_t pid = TOPi;
4113 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
4114 result = wait4pid(pid, &argflags, optype);
4116 while ((result = wait4pid(pid, &argflags, optype)) == -1 &&
4121 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4122 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
4123 STATUS_NATIVE_CHILD_SET((result && result != -1) ? argflags : -1);
4125 STATUS_NATIVE_CHILD_SET((result > 0) ? argflags : -1);
4130 DIE(aTHX_ PL_no_func, "waitpid");
4136 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
4137 #if defined(__LIBCATAMOUNT__)
4138 PL_statusvalue = -1;
4147 while (++MARK <= SP) {
4148 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
4153 TAINT_PROPER("system");
4155 PERL_FLUSHALL_FOR_CHILD;
4156 #if (defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(OS2) || defined(PERL_MICRO)
4161 #if (defined(HAS_SIGPROCMASK) && !defined(PERL_MICRO))
4162 sigset_t newset, oldset;
4165 if (PerlProc_pipe(pp) >= 0)
4167 #if (defined(HAS_SIGPROCMASK) && !defined(PERL_MICRO))
4168 sigemptyset(&newset);
4169 sigaddset(&newset, SIGCHLD);
4170 sigprocmask(SIG_BLOCK, &newset, &oldset);
4172 while ((childpid = PerlProc_fork()) == -1) {
4173 if (errno != EAGAIN) {
4178 PerlLIO_close(pp[0]);
4179 PerlLIO_close(pp[1]);
4181 #if (defined(HAS_SIGPROCMASK) && !defined(PERL_MICRO))
4182 sigprocmask(SIG_SETMASK, &oldset, NULL);
4189 Sigsave_t ihand,qhand; /* place to save signals during system() */
4193 PerlLIO_close(pp[1]);
4195 rsignal_save(SIGINT, (Sighandler_t) SIG_IGN, &ihand);
4196 rsignal_save(SIGQUIT, (Sighandler_t) SIG_IGN, &qhand);
4199 result = wait4pid(childpid, &status, 0);
4200 } while (result == -1 && errno == EINTR);
4202 #ifdef HAS_SIGPROCMASK
4203 sigprocmask(SIG_SETMASK, &oldset, NULL);
4205 (void)rsignal_restore(SIGINT, &ihand);
4206 (void)rsignal_restore(SIGQUIT, &qhand);
4208 STATUS_NATIVE_CHILD_SET(result == -1 ? -1 : status);
4209 do_execfree(); /* free any memory child malloced on fork */
4216 while (n < sizeof(int)) {
4217 n1 = PerlLIO_read(pp[0],
4218 (void*)(((char*)&errkid)+n),
4224 PerlLIO_close(pp[0]);
4225 if (n) { /* Error */
4226 if (n != sizeof(int))
4227 DIE(aTHX_ "panic: kid popen errno read, n=%u", n);
4228 errno = errkid; /* Propagate errno from kid */
4229 STATUS_NATIVE_CHILD_SET(-1);
4232 XPUSHi(STATUS_CURRENT);
4235 #if (defined(HAS_SIGPROCMASK) && !defined(PERL_MICRO))
4236 sigprocmask(SIG_SETMASK, &oldset, NULL);
4239 PerlLIO_close(pp[0]);
4240 #if defined(HAS_FCNTL) && defined(F_SETFD)
4241 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
4244 if (PL_op->op_flags & OPf_STACKED) {
4245 SV * const really = *++MARK;
4246 value = (I32)do_aexec5(really, MARK, SP, pp[1], did_pipes);
4248 else if (SP - MARK != 1)
4249 value = (I32)do_aexec5(NULL, MARK, SP, pp[1], did_pipes);
4251 value = (I32)do_exec3(SvPVx_nolen(sv_mortalcopy(*SP)), pp[1], did_pipes);
4255 #else /* ! FORK or VMS or OS/2 */
4258 if (PL_op->op_flags & OPf_STACKED) {
4259 SV * const really = *++MARK;
4260 # if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__) || defined(__VMS)
4261 value = (I32)do_aspawn(really, MARK, SP);
4263 value = (I32)do_aspawn(really, (void **)MARK, (void **)SP);
4266 else if (SP - MARK != 1) {
4267 # if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__) || defined(__VMS)
4268 value = (I32)do_aspawn(NULL, MARK, SP);
4270 value = (I32)do_aspawn(NULL, (void **)MARK, (void **)SP);
4274 value = (I32)do_spawn(SvPVx_nolen(sv_mortalcopy(*SP)));
4276 if (PL_statusvalue == -1) /* hint that value must be returned as is */
4278 STATUS_NATIVE_CHILD_SET(value);
4281 XPUSHi(result ? value : STATUS_CURRENT);
4282 #endif /* !FORK or VMS or OS/2 */
4289 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
4294 while (++MARK <= SP) {
4295 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
4300 TAINT_PROPER("exec");
4302 PERL_FLUSHALL_FOR_CHILD;
4303 if (PL_op->op_flags & OPf_STACKED) {
4304 SV * const really = *++MARK;
4305 value = (I32)do_aexec(really, MARK, SP);
4307 else if (SP - MARK != 1)
4309 value = (I32)vms_do_aexec(NULL, MARK, SP);
4311 value = (I32)do_aexec(NULL, MARK, SP);
4315 value = (I32)vms_do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
4317 value = (I32)do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
4330 XPUSHi( getppid() );
4333 DIE(aTHX_ PL_no_func, "getppid");
4343 (MAXARG < 1) ? 0 : TOPs ? SvIVx(POPs) : ((void)POPs, 0);
4346 pgrp = (I32)BSD_GETPGRP(pid);
4348 if (pid != 0 && pid != PerlProc_getpid())
4349 DIE(aTHX_ "POSIX getpgrp can't take an argument");
4355 DIE(aTHX_ PL_no_func, "getpgrp()");
4365 pgrp = MAXARG == 2 && (TOPs||POPs) ? POPi : 0;
4366 if (MAXARG > 0) pid = TOPs && TOPi;
4372 TAINT_PROPER("setpgrp");
4374 SETi( BSD_SETPGRP(pid, pgrp) >= 0 );
4376 if ((pgrp != 0 && pgrp != PerlProc_getpid())
4377 || (pid != 0 && pid != PerlProc_getpid()))
4379 DIE(aTHX_ "setpgrp can't take arguments");
4381 SETi( setpgrp() >= 0 );
4382 #endif /* USE_BSDPGRP */
4385 DIE(aTHX_ PL_no_func, "setpgrp()");
4389 #if defined(__GLIBC__) && ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3) || (__GLIBC__ > 2))
4390 # define PRIORITY_WHICH_T(which) (__priority_which_t)which
4392 # define PRIORITY_WHICH_T(which) which
4397 #ifdef HAS_GETPRIORITY
4399 const int who = POPi;
4400 const int which = TOPi;
4401 SETi( getpriority(PRIORITY_WHICH_T(which), who) );
4404 DIE(aTHX_ PL_no_func, "getpriority()");
4410 #ifdef HAS_SETPRIORITY
4412 const int niceval = POPi;
4413 const int who = POPi;
4414 const int which = TOPi;
4415 TAINT_PROPER("setpriority");
4416 SETi( setpriority(PRIORITY_WHICH_T(which), who, niceval) >= 0 );
4419 DIE(aTHX_ PL_no_func, "setpriority()");
4423 #undef PRIORITY_WHICH_T
4431 XPUSHn( time(NULL) );
4433 XPUSHi( time(NULL) );
4445 (void)PerlProc_times(&PL_timesbuf);
4447 (void)PerlProc_times((tbuffer_t *)&PL_timesbuf); /* time.h uses different name for */
4448 /* struct tms, though same data */
4452 mPUSHn(((NV)PL_timesbuf.tms_utime)/(NV)PL_clocktick);
4453 if (GIMME == G_ARRAY) {
4454 mPUSHn(((NV)PL_timesbuf.tms_stime)/(NV)PL_clocktick);
4455 mPUSHn(((NV)PL_timesbuf.tms_cutime)/(NV)PL_clocktick);
4456 mPUSHn(((NV)PL_timesbuf.tms_cstime)/(NV)PL_clocktick);
4464 if (GIMME == G_ARRAY) {
4471 DIE(aTHX_ "times not implemented");
4473 #endif /* HAS_TIMES */
4476 /* The 32 bit int year limits the times we can represent to these
4477 boundaries with a few days wiggle room to account for time zone
4480 /* Sat Jan 3 00:00:00 -2147481748 */
4481 #define TIME_LOWER_BOUND -67768100567755200.0
4482 /* Sun Dec 29 12:00:00 2147483647 */
4483 #define TIME_UPPER_BOUND 67767976233316800.0
4492 const char *opname = PL_op->op_type == OP_LOCALTIME ? "localtime" : "gmtime";
4493 static const char * const dayname[] =
4494 {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
4495 static const char * const monname[] =
4496 {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
4497 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
4499 if (MAXARG < 1 || (!TOPs && ((void)POPs, 1))) {
4502 when = (Time64_T)now;
4505 NV input = Perl_floor(POPn);
4506 when = (Time64_T)input;
4507 if (when != input) {
4508 /* diag_listed_as: gmtime(%f) too large */
4509 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4510 "%s(%.0" NVff ") too large", opname, input);
4514 if ( TIME_LOWER_BOUND > when ) {
4515 /* diag_listed_as: gmtime(%f) too small */
4516 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4517 "%s(%.0" NVff ") too small", opname, when);
4520 else if( when > TIME_UPPER_BOUND ) {
4521 /* diag_listed_as: gmtime(%f) too small */
4522 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4523 "%s(%.0" NVff ") too large", opname, when);
4527 if (PL_op->op_type == OP_LOCALTIME)
4528 err = S_localtime64_r(&when, &tmbuf);
4530 err = S_gmtime64_r(&when, &tmbuf);
4534 /* XXX %lld broken for quads */
4535 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4536 "%s(%.0" NVff ") failed", opname, when);
4539 if (GIMME != G_ARRAY) { /* scalar context */
4541 /* XXX newSVpvf()'s %lld type is broken, so cheat with a double */
4542 double year = (double)tmbuf.tm_year + 1900;
4549 tsv = Perl_newSVpvf(aTHX_ "%s %s %2d %02d:%02d:%02d %.0f",
4550 dayname[tmbuf.tm_wday],
4551 monname[tmbuf.tm_mon],
4559 else { /* list context */
4565 mPUSHi(tmbuf.tm_sec);
4566 mPUSHi(tmbuf.tm_min);
4567 mPUSHi(tmbuf.tm_hour);
4568 mPUSHi(tmbuf.tm_mday);
4569 mPUSHi(tmbuf.tm_mon);
4570 mPUSHn(tmbuf.tm_year);
4571 mPUSHi(tmbuf.tm_wday);
4572 mPUSHi(tmbuf.tm_yday);
4573 mPUSHi(tmbuf.tm_isdst);
4584 anum = alarm((unsigned int)anum);
4590 DIE(aTHX_ PL_no_func, "alarm");
4601 (void)time(&lasttime);
4602 if (MAXARG < 1 || (!TOPs && !POPs))
4606 PerlProc_sleep((unsigned int)duration);
4609 XPUSHi(when - lasttime);
4613 /* Shared memory. */
4614 /* Merged with some message passing. */
4618 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4619 dVAR; dSP; dMARK; dTARGET;
4620 const int op_type = PL_op->op_type;
4625 value = (I32)(do_msgsnd(MARK, SP) >= 0);
4628 value = (I32)(do_msgrcv(MARK, SP) >= 0);
4631 value = (I32)(do_semop(MARK, SP) >= 0);
4634 value = (I32)(do_shmio(op_type, MARK, SP) >= 0);
4642 return Perl_pp_semget(aTHX);
4650 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4651 dVAR; dSP; dMARK; dTARGET;
4652 const int anum = do_ipcget(PL_op->op_type, MARK, SP);
4659 DIE(aTHX_ "System V IPC is not implemented on this machine");
4665 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4666 dVAR; dSP; dMARK; dTARGET;
4667 const int anum = do_ipcctl(PL_op->op_type, MARK, SP);
4675 PUSHp(zero_but_true, ZBTLEN);
4679 return Perl_pp_semget(aTHX);
4683 /* I can't const this further without getting warnings about the types of
4684 various arrays passed in from structures. */
4686 S_space_join_names_mortal(pTHX_ char *const *array)
4690 PERL_ARGS_ASSERT_SPACE_JOIN_NAMES_MORTAL;
4692 if (array && *array) {
4693 target = newSVpvs_flags("", SVs_TEMP);
4695 sv_catpv(target, *array);
4698 sv_catpvs(target, " ");
4701 target = sv_mortalcopy(&PL_sv_no);
4706 /* Get system info. */
4710 #if defined(HAS_GETHOSTBYNAME) || defined(HAS_GETHOSTBYADDR) || defined(HAS_GETHOSTENT)
4712 I32 which = PL_op->op_type;
4715 #ifndef HAS_GETHOST_PROTOS /* XXX Do we need individual probes? */
4716 struct hostent *gethostbyaddr(Netdb_host_t, Netdb_hlen_t, int);
4717 struct hostent *gethostbyname(Netdb_name_t);
4718 struct hostent *gethostent(void);
4720 struct hostent *hent = NULL;
4724 if (which == OP_GHBYNAME) {
4725 #ifdef HAS_GETHOSTBYNAME
4726 const char* const name = POPpbytex;
4727 hent = PerlSock_gethostbyname(name);
4729 DIE(aTHX_ PL_no_sock_func, "gethostbyname");
4732 else if (which == OP_GHBYADDR) {
4733 #ifdef HAS_GETHOSTBYADDR
4734 const int addrtype = POPi;
4735 SV * const addrsv = POPs;
4737 const char *addr = (char *)SvPVbyte(addrsv, addrlen);
4739 hent = PerlSock_gethostbyaddr(addr, (Netdb_hlen_t) addrlen, addrtype);
4741 DIE(aTHX_ PL_no_sock_func, "gethostbyaddr");
4745 #ifdef HAS_GETHOSTENT
4746 hent = PerlSock_gethostent();
4748 DIE(aTHX_ PL_no_sock_func, "gethostent");
4751 #ifdef HOST_NOT_FOUND
4753 #ifdef USE_REENTRANT_API
4754 # ifdef USE_GETHOSTENT_ERRNO
4755 h_errno = PL_reentrant_buffer->_gethostent_errno;
4758 STATUS_UNIX_SET(h_errno);
4762 if (GIMME != G_ARRAY) {
4763 PUSHs(sv = sv_newmortal());
4765 if (which == OP_GHBYNAME) {
4767 sv_setpvn(sv, hent->h_addr, hent->h_length);
4770 sv_setpv(sv, (char*)hent->h_name);
4776 mPUSHs(newSVpv((char*)hent->h_name, 0));
4777 PUSHs(space_join_names_mortal(hent->h_aliases));
4778 mPUSHi(hent->h_addrtype);
4779 len = hent->h_length;
4782 for (elem = hent->h_addr_list; elem && *elem; elem++) {
4783 mXPUSHp(*elem, len);
4787 mPUSHp(hent->h_addr, len);
4789 PUSHs(sv_mortalcopy(&PL_sv_no));
4794 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
4800 #if defined(HAS_GETNETBYNAME) || defined(HAS_GETNETBYADDR) || defined(HAS_GETNETENT)
4802 I32 which = PL_op->op_type;
4804 #ifndef HAS_GETNET_PROTOS /* XXX Do we need individual probes? */
4805 struct netent *getnetbyaddr(Netdb_net_t, int);
4806 struct netent *getnetbyname(Netdb_name_t);
4807 struct netent *getnetent(void);
4809 struct netent *nent;
4811 if (which == OP_GNBYNAME){
4812 #ifdef HAS_GETNETBYNAME
4813 const char * const name = POPpbytex;
4814 nent = PerlSock_getnetbyname(name);
4816 DIE(aTHX_ PL_no_sock_func, "getnetbyname");
4819 else if (which == OP_GNBYADDR) {
4820 #ifdef HAS_GETNETBYADDR
4821 const int addrtype = POPi;
4822 const Netdb_net_t addr = (Netdb_net_t) (U32)POPu;
4823 nent = PerlSock_getnetbyaddr(addr, addrtype);
4825 DIE(aTHX_ PL_no_sock_func, "getnetbyaddr");
4829 #ifdef HAS_GETNETENT
4830 nent = PerlSock_getnetent();
4832 DIE(aTHX_ PL_no_sock_func, "getnetent");
4835 #ifdef HOST_NOT_FOUND
4837 #ifdef USE_REENTRANT_API
4838 # ifdef USE_GETNETENT_ERRNO
4839 h_errno = PL_reentrant_buffer->_getnetent_errno;
4842 STATUS_UNIX_SET(h_errno);
4847 if (GIMME != G_ARRAY) {
4848 PUSHs(sv = sv_newmortal());
4850 if (which == OP_GNBYNAME)
4851 sv_setiv(sv, (IV)nent->n_net);
4853 sv_setpv(sv, nent->n_name);
4859 mPUSHs(newSVpv(nent->n_name, 0));
4860 PUSHs(space_join_names_mortal(nent->n_aliases));
4861 mPUSHi(nent->n_addrtype);
4862 mPUSHi(nent->n_net);
4867 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
4873 #if defined(HAS_GETPROTOBYNAME) || defined(HAS_GETPROTOBYNUMBER) || defined(HAS_GETPROTOENT)
4875 I32 which = PL_op->op_type;
4877 #ifndef HAS_GETPROTO_PROTOS /* XXX Do we need individual probes? */
4878 struct protoent *getprotobyname(Netdb_name_t);
4879 struct protoent *getprotobynumber(int);
4880 struct protoent *getprotoent(void);
4882 struct protoent *pent;
4884 if (which == OP_GPBYNAME) {
4885 #ifdef HAS_GETPROTOBYNAME
4886 const char* const name = POPpbytex;
4887 pent = PerlSock_getprotobyname(name);
4889 DIE(aTHX_ PL_no_sock_func, "getprotobyname");
4892 else if (which == OP_GPBYNUMBER) {
4893 #ifdef HAS_GETPROTOBYNUMBER
4894 const int number = POPi;
4895 pent = PerlSock_getprotobynumber(number);
4897 DIE(aTHX_ PL_no_sock_func, "getprotobynumber");
4901 #ifdef HAS_GETPROTOENT
4902 pent = PerlSock_getprotoent();
4904 DIE(aTHX_ PL_no_sock_func, "getprotoent");
4908 if (GIMME != G_ARRAY) {
4909 PUSHs(sv = sv_newmortal());
4911 if (which == OP_GPBYNAME)
4912 sv_setiv(sv, (IV)pent->p_proto);
4914 sv_setpv(sv, pent->p_name);
4920 mPUSHs(newSVpv(pent->p_name, 0));
4921 PUSHs(space_join_names_mortal(pent->p_aliases));
4922 mPUSHi(pent->p_proto);
4927 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
4933 #if defined(HAS_GETSERVBYNAME) || defined(HAS_GETSERVBYPORT) || defined(HAS_GETSERVENT)
4935 I32 which = PL_op->op_type;
4937 #ifndef HAS_GETSERV_PROTOS /* XXX Do we need individual probes? */
4938 struct servent *getservbyname(Netdb_name_t, Netdb_name_t);
4939 struct servent *getservbyport(int, Netdb_name_t);
4940 struct servent *getservent(void);
4942 struct servent *sent;
4944 if (which == OP_GSBYNAME) {
4945 #ifdef HAS_GETSERVBYNAME
4946 const char * const proto = POPpbytex;
4947 const char * const name = POPpbytex;
4948 sent = PerlSock_getservbyname(name, (proto && !*proto) ? NULL : proto);
4950 DIE(aTHX_ PL_no_sock_func, "getservbyname");
4953 else if (which == OP_GSBYPORT) {
4954 #ifdef HAS_GETSERVBYPORT
4955 const char * const proto = POPpbytex;
4956 unsigned short port = (unsigned short)POPu;
4958 port = PerlSock_htons(port);
4960 sent = PerlSock_getservbyport(port, (proto && !*proto) ? NULL : proto);
4962 DIE(aTHX_ PL_no_sock_func, "getservbyport");
4966 #ifdef HAS_GETSERVENT
4967 sent = PerlSock_getservent();
4969 DIE(aTHX_ PL_no_sock_func, "getservent");
4973 if (GIMME != G_ARRAY) {
4974 PUSHs(sv = sv_newmortal());
4976 if (which == OP_GSBYNAME) {
4978 sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
4980 sv_setiv(sv, (IV)(sent->s_port));
4984 sv_setpv(sv, sent->s_name);
4990 mPUSHs(newSVpv(sent->s_name, 0));
4991 PUSHs(space_join_names_mortal(sent->s_aliases));
4993 mPUSHi(PerlSock_ntohs(sent->s_port));
4995 mPUSHi(sent->s_port);
4997 mPUSHs(newSVpv(sent->s_proto, 0));
5002 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5009 const int stayopen = TOPi;
5010 switch(PL_op->op_type) {
5012 #ifdef HAS_SETHOSTENT
5013 PerlSock_sethostent(stayopen);
5015 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5018 #ifdef HAS_SETNETENT
5020 PerlSock_setnetent(stayopen);
5022 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5026 #ifdef HAS_SETPROTOENT
5027 PerlSock_setprotoent(stayopen);
5029 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5033 #ifdef HAS_SETSERVENT
5034 PerlSock_setservent(stayopen);
5036 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5046 switch(PL_op->op_type) {
5048 #ifdef HAS_ENDHOSTENT
5049 PerlSock_endhostent();
5051 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5055 #ifdef HAS_ENDNETENT
5056 PerlSock_endnetent();
5058 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5062 #ifdef HAS_ENDPROTOENT
5063 PerlSock_endprotoent();
5065 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5069 #ifdef HAS_ENDSERVENT
5070 PerlSock_endservent();
5072 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5076 #if defined(HAS_GROUP) && defined(HAS_SETGRENT)
5079 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5083 #if defined(HAS_GROUP) && defined(HAS_ENDGRENT)
5086 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5090 #if defined(HAS_PASSWD) && defined(HAS_SETPWENT)
5093 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5097 #if defined(HAS_PASSWD) && defined(HAS_ENDPWENT)
5100 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5112 I32 which = PL_op->op_type;
5114 struct passwd *pwent = NULL;
5116 * We currently support only the SysV getsp* shadow password interface.
5117 * The interface is declared in <shadow.h> and often one needs to link
5118 * with -lsecurity or some such.
5119 * This interface is used at least by Solaris, HP-UX, IRIX, and Linux.
5122 * AIX getpwnam() is clever enough to return the encrypted password
5123 * only if the caller (euid?) is root.
5125 * There are at least three other shadow password APIs. Many platforms
5126 * seem to contain more than one interface for accessing the shadow
5127 * password databases, possibly for compatibility reasons.
5128 * The getsp*() is by far he simplest one, the other two interfaces
5129 * are much more complicated, but also very similar to each other.
5134 * struct pr_passwd *getprpw*();
5135 * The password is in
5136 * char getprpw*(...).ufld.fd_encrypt[]
5137 * Mention HAS_GETPRPWNAM here so that Configure probes for it.
5142 * struct es_passwd *getespw*();
5143 * The password is in
5144 * char *(getespw*(...).ufld.fd_encrypt)
5145 * Mention HAS_GETESPWNAM here so that Configure probes for it.
5148 * struct userpw *getuserpw();
5149 * The password is in
5150 * char *(getuserpw(...)).spw_upw_passwd
5151 * (but the de facto standard getpwnam() should work okay)
5153 * Mention I_PROT here so that Configure probes for it.
5155 * In HP-UX for getprpw*() the manual page claims that one should include
5156 * <hpsecurity.h> instead of <sys/security.h>, but that is not needed
5157 * if one includes <shadow.h> as that includes <hpsecurity.h>,
5158 * and pp_sys.c already includes <shadow.h> if there is such.
5160 * Note that <sys/security.h> is already probed for, but currently
5161 * it is only included in special cases.
5163 * In Digital UNIX/Tru64 if using the getespw*() (which seems to be
5164 * be preferred interface, even though also the getprpw*() interface
5165 * is available) one needs to link with -lsecurity -ldb -laud -lm.
5166 * One also needs to call set_auth_parameters() in main() before
5167 * doing anything else, whether one is using getespw*() or getprpw*().
5169 * Note that accessing the shadow databases can be magnitudes
5170 * slower than accessing the standard databases.
5175 # if defined(__CYGWIN__) && defined(USE_REENTRANT_API)
5176 /* Cygwin 1.5.3-1 has buggy getpwnam_r() and getpwuid_r():
5177 * the pw_comment is left uninitialized. */
5178 PL_reentrant_buffer->_pwent_struct.pw_comment = NULL;
5184 const char* const name = POPpbytex;
5185 pwent = getpwnam(name);
5191 pwent = getpwuid(uid);
5195 # ifdef HAS_GETPWENT
5197 #ifdef POSIX_BC /* In some cases pw_passwd has invalid addresses */
5198 if (pwent) pwent = getpwnam(pwent->pw_name);
5201 DIE(aTHX_ PL_no_func, "getpwent");
5207 if (GIMME != G_ARRAY) {
5208 PUSHs(sv = sv_newmortal());
5210 if (which == OP_GPWNAM)
5211 # if Uid_t_sign <= 0
5212 sv_setiv(sv, (IV)pwent->pw_uid);
5214 sv_setuv(sv, (UV)pwent->pw_uid);
5217 sv_setpv(sv, pwent->pw_name);
5223 mPUSHs(newSVpv(pwent->pw_name, 0));
5227 /* If we have getspnam(), we try to dig up the shadow
5228 * password. If we are underprivileged, the shadow
5229 * interface will set the errno to EACCES or similar,
5230 * and return a null pointer. If this happens, we will
5231 * use the dummy password (usually "*" or "x") from the
5232 * standard password database.
5234 * In theory we could skip the shadow call completely
5235 * if euid != 0 but in practice we cannot know which
5236 * security measures are guarding the shadow databases
5237 * on a random platform.
5239 * Resist the urge to use additional shadow interfaces.
5240 * Divert the urge to writing an extension instead.
5243 /* Some AIX setups falsely(?) detect some getspnam(), which
5244 * has a different API than the Solaris/IRIX one. */
5245 # if defined(HAS_GETSPNAM) && !defined(_AIX)
5248 const struct spwd * const spwent = getspnam(pwent->pw_name);
5249 /* Save and restore errno so that
5250 * underprivileged attempts seem
5251 * to have never made the unsuccessful
5252 * attempt to retrieve the shadow password. */
5254 if (spwent && spwent->sp_pwdp)
5255 sv_setpv(sv, spwent->sp_pwdp);
5259 if (!SvPOK(sv)) /* Use the standard password, then. */
5260 sv_setpv(sv, pwent->pw_passwd);
5263 # ifndef INCOMPLETE_TAINTS
5264 /* passwd is tainted because user himself can diddle with it.
5265 * admittedly not much and in a very limited way, but nevertheless. */
5269 # if Uid_t_sign <= 0
5270 mPUSHi(pwent->pw_uid);
5272 mPUSHu(pwent->pw_uid);
5275 # if Uid_t_sign <= 0
5276 mPUSHi(pwent->pw_gid);
5278 mPUSHu(pwent->pw_gid);
5280 /* pw_change, pw_quota, and pw_age are mutually exclusive--
5281 * because of the poor interface of the Perl getpw*(),
5282 * not because there's some standard/convention saying so.
5283 * A better interface would have been to return a hash,
5284 * but we are accursed by our history, alas. --jhi. */
5286 mPUSHi(pwent->pw_change);
5289 mPUSHi(pwent->pw_quota);
5292 mPUSHs(newSVpv(pwent->pw_age, 0));
5294 /* I think that you can never get this compiled, but just in case. */
5295 PUSHs(sv_mortalcopy(&PL_sv_no));
5300 /* pw_class and pw_comment are mutually exclusive--.
5301 * see the above note for pw_change, pw_quota, and pw_age. */
5303 mPUSHs(newSVpv(pwent->pw_class, 0));
5306 mPUSHs(newSVpv(pwent->pw_comment, 0));
5308 /* I think that you can never get this compiled, but just in case. */
5309 PUSHs(sv_mortalcopy(&PL_sv_no));
5314 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_gecos, 0)));
5316 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5318 # ifndef INCOMPLETE_TAINTS
5319 /* pw_gecos is tainted because user himself can diddle with it. */
5323 mPUSHs(newSVpv(pwent->pw_dir, 0));
5325 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_shell, 0)));
5326 # ifndef INCOMPLETE_TAINTS
5327 /* pw_shell is tainted because user himself can diddle with it. */
5332 mPUSHi(pwent->pw_expire);
5337 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5345 const I32 which = PL_op->op_type;
5346 const struct group *grent;
5348 if (which == OP_GGRNAM) {
5349 const char* const name = POPpbytex;
5350 grent = (const struct group *)getgrnam(name);
5352 else if (which == OP_GGRGID) {
5353 const Gid_t gid = POPi;
5354 grent = (const struct group *)getgrgid(gid);
5358 grent = (struct group *)getgrent();
5360 DIE(aTHX_ PL_no_func, "getgrent");
5364 if (GIMME != G_ARRAY) {
5365 SV * const sv = sv_newmortal();
5369 if (which == OP_GGRNAM)
5371 sv_setiv(sv, (IV)grent->gr_gid);
5373 sv_setuv(sv, (UV)grent->gr_gid);
5376 sv_setpv(sv, grent->gr_name);
5382 mPUSHs(newSVpv(grent->gr_name, 0));
5385 mPUSHs(newSVpv(grent->gr_passwd, 0));
5387 PUSHs(sv_mortalcopy(&PL_sv_no));
5391 mPUSHi(grent->gr_gid);
5393 mPUSHu(grent->gr_gid);
5396 #if !(defined(_CRAYMPP) && defined(USE_REENTRANT_API))
5397 /* In UNICOS/mk (_CRAYMPP) the multithreading
5398 * versions (getgrnam_r, getgrgid_r)
5399 * seem to return an illegal pointer
5400 * as the group members list, gr_mem.
5401 * getgrent() doesn't even have a _r version
5402 * but the gr_mem is poisonous anyway.
5403 * So yes, you cannot get the list of group
5404 * members if building multithreaded in UNICOS/mk. */
5405 PUSHs(space_join_names_mortal(grent->gr_mem));
5411 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5421 if (!(tmps = PerlProc_getlogin()))
5423 sv_setpv_mg(TARG, tmps);
5427 DIE(aTHX_ PL_no_func, "getlogin");
5431 /* Miscellaneous. */
5436 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
5437 I32 items = SP - MARK;
5438 unsigned long a[20];
5443 while (++MARK <= SP) {
5444 if (SvTAINTED(*MARK)) {
5450 TAINT_PROPER("syscall");
5453 /* This probably won't work on machines where sizeof(long) != sizeof(int)
5454 * or where sizeof(long) != sizeof(char*). But such machines will
5455 * not likely have syscall implemented either, so who cares?
5457 while (++MARK <= SP) {
5458 if (SvNIOK(*MARK) || !i)
5459 a[i++] = SvIV(*MARK);
5460 else if (*MARK == &PL_sv_undef)
5463 a[i++] = (unsigned long)SvPV_force_nolen(*MARK);
5469 DIE(aTHX_ "Too many args to syscall");
5471 DIE(aTHX_ "Too few args to syscall");
5473 retval = syscall(a[0]);
5476 retval = syscall(a[0],a[1]);
5479 retval = syscall(a[0],a[1],a[2]);
5482 retval = syscall(a[0],a[1],a[2],a[3]);
5485 retval = syscall(a[0],a[1],a[2],a[3],a[4]);
5488 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5]);
5491 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6]);
5494 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7]);
5501 DIE(aTHX_ PL_no_func, "syscall");
5505 #ifdef FCNTL_EMULATE_FLOCK
5507 /* XXX Emulate flock() with fcntl().
5508 What's really needed is a good file locking module.
5512 fcntl_emulate_flock(int fd, int operation)
5517 switch (operation & ~LOCK_NB) {
5519 flock.l_type = F_RDLCK;
5522 flock.l_type = F_WRLCK;
5525 flock.l_type = F_UNLCK;
5531 flock.l_whence = SEEK_SET;
5532 flock.l_start = flock.l_len = (Off_t)0;
5534 res = fcntl(fd, (operation & LOCK_NB) ? F_SETLK : F_SETLKW, &flock);
5535 if (res == -1 && ((errno == EAGAIN) || (errno == EACCES)))
5536 errno = EWOULDBLOCK;
5540 #endif /* FCNTL_EMULATE_FLOCK */
5542 #ifdef LOCKF_EMULATE_FLOCK
5544 /* XXX Emulate flock() with lockf(). This is just to increase
5545 portability of scripts. The calls are not completely
5546 interchangeable. What's really needed is a good file
5550 /* The lockf() constants might have been defined in <unistd.h>.
5551 Unfortunately, <unistd.h> causes troubles on some mixed
5552 (BSD/POSIX) systems, such as SunOS 4.1.3.
5554 Further, the lockf() constants aren't POSIX, so they might not be
5555 visible if we're compiling with _POSIX_SOURCE defined. Thus, we'll
5556 just stick in the SVID values and be done with it. Sigh.
5560 # define F_ULOCK 0 /* Unlock a previously locked region */
5563 # define F_LOCK 1 /* Lock a region for exclusive use */
5566 # define F_TLOCK 2 /* Test and lock a region for exclusive use */
5569 # define F_TEST 3 /* Test a region for other processes locks */
5573 lockf_emulate_flock(int fd, int operation)
5579 /* flock locks entire file so for lockf we need to do the same */
5580 pos = PerlLIO_lseek(fd, (Off_t)0, SEEK_CUR); /* get pos to restore later */
5581 if (pos > 0) /* is seekable and needs to be repositioned */
5582 if (PerlLIO_lseek(fd, (Off_t)0, SEEK_SET) < 0)
5583 pos = -1; /* seek failed, so don't seek back afterwards */
5586 switch (operation) {
5588 /* LOCK_SH - get a shared lock */
5590 /* LOCK_EX - get an exclusive lock */
5592 i = lockf (fd, F_LOCK, 0);
5595 /* LOCK_SH|LOCK_NB - get a non-blocking shared lock */
5596 case LOCK_SH|LOCK_NB:
5597 /* LOCK_EX|LOCK_NB - get a non-blocking exclusive lock */
5598 case LOCK_EX|LOCK_NB:
5599 i = lockf (fd, F_TLOCK, 0);
5601 if ((errno == EAGAIN) || (errno == EACCES))
5602 errno = EWOULDBLOCK;
5605 /* LOCK_UN - unlock (non-blocking is a no-op) */
5607 case LOCK_UN|LOCK_NB:
5608 i = lockf (fd, F_ULOCK, 0);
5611 /* Default - can't decipher operation */
5618 if (pos > 0) /* need to restore position of the handle */
5619 PerlLIO_lseek(fd, pos, SEEK_SET); /* ignore error here */
5624 #endif /* LOCKF_EMULATE_FLOCK */
5628 * c-indentation-style: bsd
5630 * indent-tabs-mode: nil
5633 * ex: set ts=8 sts=4 sw=4 et: