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>
185 /* Missing protos on LynxOS */
186 void sethostent(int);
187 void endhostent(void);
189 void endnetent(void);
190 void setprotoent(int);
191 void endprotoent(void);
192 void setservent(int);
193 void endservent(void);
196 #undef PERL_EFF_ACCESS /* EFFective uid/gid ACCESS */
198 /* F_OK unused: if stat() cannot find it... */
200 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
201 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
202 # define PERL_EFF_ACCESS(p,f) (access((p), (f) | EFF_ONLY_OK))
205 #if !defined(PERL_EFF_ACCESS) && defined(HAS_EACCESS)
206 # ifdef I_SYS_SECURITY
207 # include <sys/security.h>
211 # define PERL_EFF_ACCESS(p,f) (eaccess((p), (f), ACC_SELF))
214 # define PERL_EFF_ACCESS(p,f) (eaccess((p), (f)))
218 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESSX) && defined(ACC_SELF)
220 # define PERL_EFF_ACCESS(p,f) (accessx((p), (f), ACC_SELF))
224 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) \
225 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
226 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
229 S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
231 const Uid_t ruid = getuid();
232 const Uid_t euid = geteuid();
233 const Gid_t rgid = getgid();
234 const Gid_t egid = getegid();
237 #if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
238 Perl_croak(aTHX_ "switching effective uid is not implemented");
241 if (setreuid(euid, ruid))
244 if (setresuid(euid, ruid, (Uid_t)-1))
247 /* diag_listed_as: entering effective %s failed */
248 Perl_croak(aTHX_ "entering effective uid failed");
251 #if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
252 Perl_croak(aTHX_ "switching effective gid is not implemented");
255 if (setregid(egid, rgid))
258 if (setresgid(egid, rgid, (Gid_t)-1))
261 /* diag_listed_as: entering effective %s failed */
262 Perl_croak(aTHX_ "entering effective gid failed");
265 res = access(path, mode);
268 if (setreuid(ruid, euid))
271 if (setresuid(ruid, euid, (Uid_t)-1))
274 /* diag_listed_as: leaving effective %s failed */
275 Perl_croak(aTHX_ "leaving effective uid failed");
278 if (setregid(rgid, egid))
281 if (setresgid(rgid, egid, (Gid_t)-1))
284 /* diag_listed_as: leaving effective %s failed */
285 Perl_croak(aTHX_ "leaving effective gid failed");
289 # define PERL_EFF_ACCESS(p,f) (S_emulate_eaccess(aTHX_ (p), (f)))
296 const char * const tmps = POPpconstx;
297 const I32 gimme = GIMME_V;
298 const char *mode = "r";
301 if (PL_op->op_private & OPpOPEN_IN_RAW)
303 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
305 fp = PerlProc_popen(tmps, mode);
307 const char * const type = Perl_PerlIO_context_layers(aTHX_ NULL);
309 PerlIO_apply_layers(aTHX_ fp,mode,type);
311 if (gimme == G_VOID) {
313 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
316 else if (gimme == G_SCALAR) {
317 ENTER_with_name("backtick");
319 PL_rs = &PL_sv_undef;
320 sv_setpvs(TARG, ""); /* note that this preserves previous buffer */
321 while (sv_gets(TARG, fp, SvCUR(TARG)) != NULL)
323 LEAVE_with_name("backtick");
329 SV * const sv = newSV(79);
330 if (sv_gets(sv, fp, 0) == NULL) {
335 if (SvLEN(sv) - SvCUR(sv) > 20) {
336 SvPV_shrink_to_cur(sv);
341 STATUS_NATIVE_CHILD_SET(PerlProc_pclose(fp));
342 TAINT; /* "I believe that this is not gratuitous!" */
345 STATUS_NATIVE_CHILD_SET(-1);
346 if (gimme == G_SCALAR)
357 GV * const gv = (PL_op->op_flags & OPf_SPECIAL) ? NULL : (GV *)POPs;
361 /* make a copy of the pattern if it is gmagical, to ensure that magic
362 * is called once and only once */
363 if (SvGMAGICAL(TOPs)) TOPs = sv_2mortal(newSVsv(TOPs));
365 tryAMAGICunTARGETlist(iter_amg, (PL_op->op_flags & OPf_SPECIAL));
367 if (PL_op->op_flags & OPf_SPECIAL) {
368 /* call Perl-level glob function instead. Stack args are:
370 * and following OPs should be: gv(CORE::GLOBAL::glob), entersub
379 /* Note that we only ever get here if File::Glob fails to load
380 * without at the same time croaking, for some reason, or if
381 * perl was built with PERL_EXTERNAL_GLOB */
383 ENTER_with_name("glob");
388 * The external globbing program may use things we can't control,
389 * so for security reasons we must assume the worst.
392 taint_proper(PL_no_security, "glob");
396 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
399 SAVESPTR(PL_rs); /* This is not permanent, either. */
400 PL_rs = newSVpvs_flags("\000", SVs_TEMP);
403 *SvPVX(PL_rs) = '\n';
407 result = do_readline();
408 LEAVE_with_name("glob");
414 PL_last_in_gv = cGVOP_gv;
415 return do_readline();
425 do_join(TARG, &PL_sv_no, MARK, SP);
429 else if (SP == MARK) {
436 if (SvGMAGICAL(exsv)) exsv = sv_mortalcopy(exsv);
439 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
440 /* well-formed exception supplied */
443 SV * const errsv = ERRSV;
446 if (SvGMAGICAL(errsv)) {
447 exsv = sv_newmortal();
448 sv_setsv_nomg(exsv, errsv);
452 else if (SvPOKp(errsv) ? SvCUR(errsv) : SvNIOKp(errsv)) {
453 exsv = sv_newmortal();
454 sv_setsv_nomg(exsv, errsv);
455 sv_catpvs(exsv, "\t...caught");
458 exsv = newSVpvs_flags("Warning: something's wrong", SVs_TEMP);
461 if (SvROK(exsv) && !PL_warnhook)
462 Perl_warn(aTHX_ "%"SVf, SVfARG(exsv));
474 VMSISH_HUSHED || (PL_curcop->op_private & OPpHUSH_VMSISH);
476 if (SP - MARK != 1) {
478 do_join(TARG, &PL_sv_no, MARK, SP);
486 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
487 /* well-formed exception supplied */
490 SV * const errsv = 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 (SvPOK(errsv) && SvCUR(errsv)) {
513 exsv = sv_mortalcopy(errsv);
514 sv_catpvs(exsv, "\t...propagated");
517 exsv = newSVpvs_flags("Died", SVs_TEMP);
521 NOT_REACHED; /* NOTREACHED */
522 return NULL; /* avoid missing return from non-void function warning */
528 Perl_tied_method(pTHX_ SV *methname, SV **sp, SV *const sv,
529 const MAGIC *const mg, const U32 flags, U32 argc, ...)
534 PERL_ARGS_ASSERT_TIED_METHOD;
536 /* Ensure that our flag bits do not overlap. */
537 assert((TIED_METHOD_MORTALIZE_NOT_NEEDED & G_WANT) == 0);
538 assert((TIED_METHOD_ARGUMENTS_ON_STACK & G_WANT) == 0);
539 assert((TIED_METHOD_SAY & G_WANT) == 0);
541 PUTBACK; /* sp is at *foot* of args, so this pops args from old stack */
542 PUSHSTACKi(PERLSI_MAGIC);
543 EXTEND(SP, argc+1); /* object + args */
545 PUSHs(SvTIED_obj(sv, mg));
546 if (flags & TIED_METHOD_ARGUMENTS_ON_STACK) {
547 Copy(orig_sp + 2, sp + 1, argc, SV*); /* copy args to new stack */
551 const U32 mortalize_not_needed
552 = flags & TIED_METHOD_MORTALIZE_NOT_NEEDED;
554 va_start(args, argc);
556 SV *const arg = va_arg(args, SV *);
557 if(mortalize_not_needed)
566 ENTER_with_name("call_tied_method");
567 if (flags & TIED_METHOD_SAY) {
568 /* local $\ = "\n" */
569 SAVEGENERICSV(PL_ors_sv);
570 PL_ors_sv = newSVpvs("\n");
572 ret_args = call_sv(methname, (flags & G_WANT)|G_METHOD_NAMED);
577 if (ret_args) { /* copy results back to original stack */
578 EXTEND(sp, ret_args);
579 Copy(orig_sp - ret_args + 1, sp + 1, ret_args, SV*);
583 LEAVE_with_name("call_tied_method");
587 #define tied_method0(a,b,c,d) \
588 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,0)
589 #define tied_method1(a,b,c,d,e) \
590 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,1,e)
591 #define tied_method2(a,b,c,d,e,f) \
592 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,2,e,f)
605 GV * const gv = MUTABLE_GV(*++MARK);
607 if (!isGV(gv) && !(SvTYPE(gv) == SVt_PVLV && isGV_with_GP(gv)))
608 DIE(aTHX_ PL_no_usym, "filehandle");
610 if ((io = GvIOp(gv))) {
612 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
615 Perl_ck_warner_d(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
616 "Opening dirhandle %"HEKf" also as a file",
617 HEKfARG(GvENAME_HEK(gv)));
619 mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
621 /* Method's args are same as ours ... */
622 /* ... except handle is replaced by the object */
623 return Perl_tied_method(aTHX_ SV_CONST(OPEN), mark - 1, MUTABLE_SV(io), mg,
624 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
636 tmps = SvPV_const(sv, len);
637 ok = do_open6(gv, tmps, len, NULL, MARK+1, (SP-MARK));
640 PUSHi( (I32)PL_forkprocess );
641 else if (PL_forkprocess == 0) /* we are a new child */
652 MAXARG == 0 || (!TOPs && !POPs) ? PL_defoutgv : MUTABLE_GV(POPs);
658 IO * const io = GvIO(gv);
660 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
662 return tied_method0(SV_CONST(CLOSE), SP, MUTABLE_SV(io), mg);
666 PUSHs(boolSV(do_close(gv, TRUE)));
678 GV * const wgv = MUTABLE_GV(POPs);
679 GV * const rgv = MUTABLE_GV(POPs);
681 assert (isGV_with_GP(rgv));
682 assert (isGV_with_GP(wgv));
685 do_close(rgv, FALSE);
689 do_close(wgv, FALSE);
691 if (PerlProc_pipe(fd) < 0)
694 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
695 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
696 IoOFP(rstio) = IoIFP(rstio);
697 IoIFP(wstio) = IoOFP(wstio);
698 IoTYPE(rstio) = IoTYPE_RDONLY;
699 IoTYPE(wstio) = IoTYPE_WRONLY;
701 if (!IoIFP(rstio) || !IoOFP(wstio)) {
703 PerlIO_close(IoIFP(rstio));
705 PerlLIO_close(fd[0]);
707 PerlIO_close(IoOFP(wstio));
709 PerlLIO_close(fd[1]);
712 #if defined(HAS_FCNTL) && defined(F_SETFD)
713 /* ensure close-on-exec */
714 if ((fcntl(fd[0], F_SETFD,fd[0] > PL_maxsysfd) < 0) ||
715 (fcntl(fd[1], F_SETFD,fd[1] > PL_maxsysfd) < 0))
723 DIE(aTHX_ PL_no_func, "pipe");
737 gv = MUTABLE_GV(POPs);
741 && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar)))
743 return tied_method0(SV_CONST(FILENO), SP, MUTABLE_SV(io), mg);
746 if (!io || !(fp = IoIFP(io))) {
747 /* Can't do this because people seem to do things like
748 defined(fileno($foo)) to check whether $foo is a valid fh.
755 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_ SV_CONST(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)) {
866 methname = "TIEHASH";
867 if (HvLAZYDEL(varsv) && (entry = HvEITER((HV *)varsv))) {
868 HvLAZYDEL_off(varsv);
869 hv_free_ent((HV *)varsv, entry);
871 HvEITER_set(MUTABLE_HV(varsv), 0);
875 methname = "TIEARRAY";
876 if (!AvREAL(varsv)) {
878 Perl_croak(aTHX_ "Cannot tie unreifiable array");
879 av_clear((AV *)varsv);
886 if (isGV_with_GP(varsv) && !SvFAKE(varsv)) {
887 methname = "TIEHANDLE";
888 how = PERL_MAGIC_tiedscalar;
889 /* For tied filehandles, we apply tiedscalar magic to the IO
890 slot of the GP rather than the GV itself. AMS 20010812 */
892 GvIOp(varsv) = newIO();
893 varsv = MUTABLE_SV(GvIOp(varsv));
896 if (SvTYPE(varsv) == SVt_PVLV && LvTYPE(varsv) == 'y') {
897 vivify_defelem(varsv);
898 varsv = LvTARG(varsv);
902 methname = "TIESCALAR";
903 how = PERL_MAGIC_tiedscalar;
907 if (sv_isobject(*MARK)) { /* Calls GET magic. */
908 ENTER_with_name("call_TIE");
909 PUSHSTACKi(PERLSI_MAGIC);
911 EXTEND(SP,(I32)items);
915 call_method(methname, G_SCALAR);
918 /* Can't use call_method here, else this: fileno FOO; tie @a, "FOO"
919 * will attempt to invoke IO::File::TIEARRAY, with (best case) the
920 * wrong error message, and worse case, supreme action at a distance.
921 * (Sorry obfuscation writers. You're not going to be given this one.)
923 stash = gv_stashsv(*MARK, 0);
924 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
925 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
926 methname, SVfARG(SvOK(*MARK) ? *MARK : &PL_sv_no));
928 ENTER_with_name("call_TIE");
929 PUSHSTACKi(PERLSI_MAGIC);
931 EXTEND(SP,(I32)items);
935 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
941 if (sv_isobject(sv)) {
942 sv_unmagic(varsv, how);
943 /* Croak if a self-tie on an aggregate is attempted. */
944 if (varsv == SvRV(sv) &&
945 (SvTYPE(varsv) == SVt_PVAV ||
946 SvTYPE(varsv) == SVt_PVHV))
948 "Self-ties of arrays and hashes are not supported");
949 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
951 LEAVE_with_name("call_TIE");
952 SP = PL_stack_base + markoff;
958 /* also used for: pp_dbmclose() */
965 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
966 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
968 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
971 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y' &&
972 !(sv = defelem_target(sv, NULL))) RETPUSHUNDEF;
974 if ((mg = SvTIED_mg(sv, how))) {
975 SV * const obj = SvRV(SvTIED_obj(sv, mg));
977 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
979 if (gv && isGV(gv) && (cv = GvCV(gv))) {
981 PUSHs(SvTIED_obj(MUTABLE_SV(gv), mg));
982 mXPUSHi(SvREFCNT(obj) - 1);
984 ENTER_with_name("call_UNTIE");
985 call_sv(MUTABLE_SV(cv), G_VOID);
986 LEAVE_with_name("call_UNTIE");
989 else if (mg && SvREFCNT(obj) > 1) {
990 Perl_ck_warner(aTHX_ packWARN(WARN_UNTIE),
991 "untie attempted while %"UVuf" inner references still exist",
992 (UV)SvREFCNT(obj) - 1 ) ;
996 sv_unmagic(sv, how) ;
1005 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
1006 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
1008 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
1011 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y' &&
1012 !(sv = defelem_target(sv, NULL))) goto ret_undef;
1014 if ((mg = SvTIED_mg(sv, how))) {
1015 SETs(SvTIED_obj(sv, mg));
1016 return NORMAL; /* PUTBACK not needed, pp_tied never moves SP */
1030 HV * const hv = MUTABLE_HV(POPs);
1031 SV * const sv = newSVpvs_flags("AnyDBM_File", SVs_TEMP);
1032 stash = gv_stashsv(sv, 0);
1033 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
1035 require_pv("AnyDBM_File.pm");
1037 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH")))
1038 DIE(aTHX_ "No dbm on this machine");
1048 mPUSHu(O_RDWR|O_CREAT);
1052 if (!SvOK(right)) right = &PL_sv_no;
1056 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
1059 if (!sv_isobject(TOPs)) {
1067 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
1071 if (sv_isobject(TOPs)) {
1072 sv_unmagic(MUTABLE_SV(hv), PERL_MAGIC_tied);
1073 sv_magic(MUTABLE_SV(hv), TOPs, PERL_MAGIC_tied, NULL, 0);
1090 struct timeval timebuf;
1091 struct timeval *tbuf = &timebuf;
1094 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1099 # if BYTEORDER & 0xf0000
1100 # define ORDERBYTE (0x88888888 - BYTEORDER)
1102 # define ORDERBYTE (0x4444 - BYTEORDER)
1108 for (i = 1; i <= 3; i++) {
1109 SV * const sv = SP[i];
1113 if (SvREADONLY(sv)) {
1114 if (!(SvPOK(sv) && SvCUR(sv) == 0))
1115 Perl_croak_no_modify();
1117 else if (SvIsCOW(sv)) sv_force_normal_flags(sv, 0);
1120 Perl_ck_warner(aTHX_ packWARN(WARN_MISC),
1121 "Non-string passed as bitmask");
1122 SvPV_force_nomg_nolen(sv); /* force string conversion */
1129 /* little endians can use vecs directly */
1130 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1137 masksize = NFDBITS / NBBY;
1139 masksize = sizeof(long); /* documented int, everyone seems to use long */
1141 Zero(&fd_sets[0], 4, char*);
1144 # if SELECT_MIN_BITS == 1
1145 growsize = sizeof(fd_set);
1147 # if defined(__GLIBC__) && defined(__FD_SETSIZE)
1148 # undef SELECT_MIN_BITS
1149 # define SELECT_MIN_BITS __FD_SETSIZE
1151 /* If SELECT_MIN_BITS is greater than one we most probably will want
1152 * to align the sizes with SELECT_MIN_BITS/8 because for example
1153 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
1154 * UNIX, Solaris, Darwin) the smallest quantum select() operates
1155 * on (sets/tests/clears bits) is 32 bits. */
1156 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
1162 value = SvNV_nomg(sv);
1165 timebuf.tv_sec = (long)value;
1166 value -= (NV)timebuf.tv_sec;
1167 timebuf.tv_usec = (long)(value * 1000000.0);
1172 for (i = 1; i <= 3; i++) {
1174 if (!SvOK(sv) || SvCUR(sv) == 0) {
1181 Sv_Grow(sv, growsize);
1185 while (++j <= growsize) {
1189 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1191 Newx(fd_sets[i], growsize, char);
1192 for (offset = 0; offset < growsize; offset += masksize) {
1193 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1194 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1197 fd_sets[i] = SvPVX(sv);
1201 #ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1202 /* Can't make just the (void*) conditional because that would be
1203 * cpp #if within cpp macro, and not all compilers like that. */
1204 nfound = PerlSock_select(
1206 (Select_fd_set_t) fd_sets[1],
1207 (Select_fd_set_t) fd_sets[2],
1208 (Select_fd_set_t) fd_sets[3],
1209 (void*) tbuf); /* Workaround for compiler bug. */
1211 nfound = PerlSock_select(
1213 (Select_fd_set_t) fd_sets[1],
1214 (Select_fd_set_t) fd_sets[2],
1215 (Select_fd_set_t) fd_sets[3],
1218 for (i = 1; i <= 3; i++) {
1221 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1223 for (offset = 0; offset < growsize; offset += masksize) {
1224 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1225 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1227 Safefree(fd_sets[i]);
1234 if (GIMME == G_ARRAY && tbuf) {
1235 value = (NV)(timebuf.tv_sec) +
1236 (NV)(timebuf.tv_usec) / 1000000.0;
1241 DIE(aTHX_ "select not implemented");
1249 =for apidoc setdefout
1251 Sets PL_defoutgv, the default file handle for output, to the passed in
1252 typeglob. As PL_defoutgv "owns" a reference on its typeglob, the reference
1253 count of the passed in typeglob is increased by one, and the reference count
1254 of the typeglob that PL_defoutgv points to is decreased by one.
1260 Perl_setdefout(pTHX_ GV *gv)
1262 PERL_ARGS_ASSERT_SETDEFOUT;
1263 SvREFCNT_inc_simple_void_NN(gv);
1264 SvREFCNT_dec(PL_defoutgv);
1272 GV * const newdefout = (PL_op->op_private > 0) ? (MUTABLE_GV(POPs)) : NULL;
1273 GV * egv = GvEGVx(PL_defoutgv);
1278 hv = isGV_with_GP(egv) ? GvSTASH(egv) : NULL;
1279 gvp = hv && HvENAME(hv)
1280 ? (GV**)hv_fetch(hv, GvNAME(egv), HEK_UTF8(GvNAME_HEK(egv)) ? -GvNAMELEN(egv) : GvNAMELEN(egv), FALSE)
1282 if (gvp && *gvp == egv) {
1283 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
1287 mXPUSHs(newRV(MUTABLE_SV(egv)));
1291 if (!GvIO(newdefout))
1292 gv_IOadd(newdefout);
1293 setdefout(newdefout);
1303 MAXARG==0 || (!TOPs && !POPs) ? PL_stdingv : MUTABLE_GV(POPs);
1304 IO *const io = GvIO(gv);
1310 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1312 const U32 gimme = GIMME_V;
1313 Perl_tied_method(aTHX_ SV_CONST(GETC), SP, MUTABLE_SV(io), mg, gimme, 0);
1314 if (gimme == G_SCALAR) {
1316 SvSetMagicSV_nosteal(TARG, TOPs);
1321 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
1322 if (!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
1324 SETERRNO(EBADF,RMS_IFI);
1328 sv_setpvs(TARG, " ");
1329 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
1330 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1331 /* Find out how many bytes the char needs */
1332 Size_t len = UTF8SKIP(SvPVX_const(TARG));
1335 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1336 SvCUR_set(TARG,1+len);
1340 else SvUTF8_off(TARG);
1346 S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
1349 const I32 gimme = GIMME_V;
1351 PERL_ARGS_ASSERT_DOFORM;
1354 cv = MUTABLE_CV(sv_2mortal(MUTABLE_SV(cv_clone(cv))));
1359 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
1360 PUSHFORMAT(cx, retop);
1361 if (CvDEPTH(cv) >= 2) {
1362 PERL_STACK_OVERFLOW_CHECK();
1363 pad_push(CvPADLIST(cv), CvDEPTH(cv));
1366 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), CvDEPTH(cv));
1368 setdefout(gv); /* locally select filehandle so $% et al work */
1386 gv = MUTABLE_GV(POPs);
1403 tmpsv = sv_newmortal();
1404 gv_efullname4(tmpsv, fgv, NULL, FALSE);
1405 DIE(aTHX_ "Undefined format \"%"SVf"\" called", SVfARG(tmpsv));
1407 IoFLAGS(io) &= ~IOf_DIDTOP;
1408 RETURNOP(doform(cv,gv,PL_op->op_next));
1414 GV * const gv = cxstack[cxstack_ix].blk_format.gv;
1415 IO * const io = GvIOp(gv);
1423 if (!io || !(ofp = IoOFP(io)))
1426 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
1427 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
1429 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1430 PL_formtarget != PL_toptarget)
1434 if (!IoTOP_GV(io)) {
1437 if (!IoTOP_NAME(io)) {
1439 if (!IoFMT_NAME(io))
1440 IoFMT_NAME(io) = savepv(GvNAME(gv));
1441 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%"HEKf"_TOP",
1442 HEKfARG(GvNAME_HEK(gv))));
1443 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
1444 if ((topgv && GvFORM(topgv)) ||
1445 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
1446 IoTOP_NAME(io) = savesvpv(topname);
1448 IoTOP_NAME(io) = savepvs("top");
1450 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
1451 if (!topgv || !GvFORM(topgv)) {
1452 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1455 IoTOP_GV(io) = topgv;
1457 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1458 I32 lines = IoLINES_LEFT(io);
1459 const char *s = SvPVX_const(PL_formtarget);
1460 if (lines <= 0) /* Yow, header didn't even fit!!! */
1462 while (lines-- > 0) {
1463 s = strchr(s, '\n');
1469 const STRLEN save = SvCUR(PL_formtarget);
1470 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
1471 do_print(PL_formtarget, ofp);
1472 SvCUR_set(PL_formtarget, save);
1473 sv_chop(PL_formtarget, s);
1474 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
1477 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
1478 do_print(GvSV(gv_fetchpvs("\f", GV_ADD, SVt_PV)), ofp);
1479 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1481 PL_formtarget = PL_toptarget;
1482 IoFLAGS(io) |= IOf_DIDTOP;
1484 assert(fgv); /* IoTOP_GV(io) should have been set above */
1487 SV * const sv = sv_newmortal();
1488 gv_efullname4(sv, fgv, NULL, FALSE);
1489 DIE(aTHX_ "Undefined top format \"%"SVf"\" called", SVfARG(sv));
1491 return doform(cv, gv, PL_op);
1495 POPBLOCK(cx,PL_curpm);
1496 retop = cx->blk_sub.retop;
1498 SP = newsp; /* ignore retval of formline */
1501 if (!io || !(fp = IoOFP(io))) {
1502 if (io && IoIFP(io))
1503 report_wrongway_fh(gv, '<');
1509 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
1510 Perl_ck_warner(aTHX_ packWARN(WARN_IO), "page overflow");
1512 if (!do_print(PL_formtarget, fp))
1515 FmLINES(PL_formtarget) = 0;
1516 SvCUR_set(PL_formtarget, 0);
1517 *SvEND(PL_formtarget) = '\0';
1518 if (IoFLAGS(io) & IOf_FLUSH)
1519 (void)PerlIO_flush(fp);
1523 PL_formtarget = PL_bodytarget;
1524 PERL_UNUSED_VAR(gimme);
1530 dSP; dMARK; dORIGMARK;
1534 = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv;
1535 IO *const io = GvIO(gv);
1537 /* Treat empty list as "" */
1538 if (MARK == SP) XPUSHs(&PL_sv_no);
1541 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1543 if (MARK == ORIGMARK) {
1546 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1549 return Perl_tied_method(aTHX_ SV_CONST(PRINTF), mark - 1, MUTABLE_SV(io),
1551 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1558 SETERRNO(EBADF,RMS_IFI);
1561 else if (!(fp = IoOFP(io))) {
1563 report_wrongway_fh(gv, '<');
1564 else if (ckWARN(WARN_CLOSED))
1566 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
1570 SV *sv = sv_newmortal();
1571 do_sprintf(sv, SP - MARK, MARK + 1);
1572 if (!do_print(sv, fp))
1575 if (IoFLAGS(io) & IOf_FLUSH)
1576 if (PerlIO_flush(fp) == EOF)
1585 PUSHs(&PL_sv_undef);
1592 const int perm = (MAXARG > 3 && (TOPs || POPs)) ? POPi : 0666;
1593 const int mode = POPi;
1594 SV * const sv = POPs;
1595 GV * const gv = MUTABLE_GV(POPs);
1598 /* Need TIEHANDLE method ? */
1599 const char * const tmps = SvPV_const(sv, len);
1600 if (do_open_raw(gv, tmps, len, mode, perm)) {
1601 IoLINES(GvIOp(gv)) = 0;
1605 PUSHs(&PL_sv_undef);
1611 /* also used for: pp_read() and pp_recv() (where supported) */
1615 dSP; dMARK; dORIGMARK; dTARGET;
1629 bool charstart = FALSE;
1630 STRLEN charskip = 0;
1632 GV * const gv = MUTABLE_GV(*++MARK);
1635 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1636 && gv && (io = GvIO(gv)) )
1638 const MAGIC *const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1640 return Perl_tied_method(aTHX_ SV_CONST(READ), mark - 1, MUTABLE_SV(io), mg,
1641 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1650 sv_setpvs(bufsv, "");
1651 length = SvIVx(*++MARK);
1653 DIE(aTHX_ "Negative length");
1656 offset = SvIVx(*++MARK);
1660 if (!io || !IoIFP(io)) {
1662 SETERRNO(EBADF,RMS_IFI);
1666 /* Note that fd can here validly be -1, don't check it yet. */
1667 fd = PerlIO_fileno(IoIFP(io));
1669 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
1670 buffer = SvPVutf8_force(bufsv, blen);
1671 /* UTF-8 may not have been set if they are all low bytes */
1676 buffer = SvPV_force(bufsv, blen);
1677 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
1679 if (DO_UTF8(bufsv)) {
1680 blen = sv_len_utf8_nomg(bufsv);
1689 if (PL_op->op_type == OP_RECV) {
1690 Sock_size_t bufsize;
1691 char namebuf[MAXPATHLEN];
1693 SETERRNO(EBADF,SS_IVCHAN);
1696 #if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
1697 bufsize = sizeof (struct sockaddr_in);
1699 bufsize = sizeof namebuf;
1701 #ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1705 buffer = SvGROW(bufsv, (STRLEN)(length+1));
1706 /* 'offset' means 'flags' here */
1707 count = PerlSock_recvfrom(fd, buffer, length, offset,
1708 (struct sockaddr *)namebuf, &bufsize);
1711 /* MSG_TRUNC can give oversized count; quietly lose it */
1714 SvCUR_set(bufsv, count);
1715 *SvEND(bufsv) = '\0';
1716 (void)SvPOK_only(bufsv);
1720 /* This should not be marked tainted if the fp is marked clean */
1721 if (!(IoFLAGS(io) & IOf_UNTAINT))
1722 SvTAINTED_on(bufsv);
1724 #if defined(__CYGWIN__)
1725 /* recvfrom() on cygwin doesn't set bufsize at all for
1726 connected sockets, leaving us with trash in the returned
1727 name, so use the same test as the Win32 code to check if it
1728 wasn't set, and set it [perl #118843] */
1729 if (bufsize == sizeof namebuf)
1732 sv_setpvn(TARG, namebuf, bufsize);
1738 if (-offset > (SSize_t)blen)
1739 DIE(aTHX_ "Offset outside string");
1742 if (DO_UTF8(bufsv)) {
1743 /* convert offset-as-chars to offset-as-bytes */
1744 if (offset >= (SSize_t)blen)
1745 offset += SvCUR(bufsv) - blen;
1747 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
1751 /* Reestablish the fd in case it shifted from underneath us. */
1752 fd = PerlIO_fileno(IoIFP(io));
1754 orig_size = SvCUR(bufsv);
1755 /* Allocating length + offset + 1 isn't perfect in the case of reading
1756 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1758 (should be 2 * length + offset + 1, or possibly something longer if
1759 PL_encoding is true) */
1760 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
1761 if (offset > 0 && offset > (SSize_t)orig_size) { /* Zero any newly allocated space */
1762 Zero(buffer+orig_size, offset-orig_size, char);
1764 buffer = buffer + offset;
1766 read_target = bufsv;
1768 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1769 concatenate it to the current buffer. */
1771 /* Truncate the existing buffer to the start of where we will be
1773 SvCUR_set(bufsv, offset);
1775 read_target = sv_newmortal();
1776 SvUPGRADE(read_target, SVt_PV);
1777 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1780 if (PL_op->op_type == OP_SYSREAD) {
1781 #ifdef PERL_SOCK_SYSREAD_IS_RECV
1782 if (IoTYPE(io) == IoTYPE_SOCKET) {
1784 SETERRNO(EBADF,SS_IVCHAN);
1788 count = PerlSock_recv(fd, buffer, length, 0);
1794 SETERRNO(EBADF,RMS_IFI);
1798 count = PerlLIO_read(fd, buffer, length);
1803 count = PerlIO_read(IoIFP(io), buffer, length);
1804 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1805 if (count == 0 && PerlIO_error(IoIFP(io)))
1809 if (IoTYPE(io) == IoTYPE_WRONLY)
1810 report_wrongway_fh(gv, '>');
1813 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1814 *SvEND(read_target) = '\0';
1815 (void)SvPOK_only(read_target);
1816 if (fp_utf8 && !IN_BYTES) {
1817 /* Look at utf8 we got back and count the characters */
1818 const char *bend = buffer + count;
1819 while (buffer < bend) {
1821 skip = UTF8SKIP(buffer);
1824 if (buffer - charskip + skip > bend) {
1825 /* partial character - try for rest of it */
1826 length = skip - (bend-buffer);
1827 offset = bend - SvPVX_const(bufsv);
1839 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1840 provided amount read (count) was what was requested (length)
1842 if (got < wanted && count == length) {
1843 length = wanted - got;
1844 offset = bend - SvPVX_const(bufsv);
1847 /* return value is character count */
1851 else if (buffer_utf8) {
1852 /* Let svcatsv upgrade the bytes we read in to utf8.
1853 The buffer is a mortal so will be freed soon. */
1854 sv_catsv_nomg(bufsv, read_target);
1857 /* This should not be marked tainted if the fp is marked clean */
1858 if (!(IoFLAGS(io) & IOf_UNTAINT))
1859 SvTAINTED_on(bufsv);
1870 /* also used for: pp_send() where defined */
1874 dSP; dMARK; dORIGMARK; dTARGET;
1879 STRLEN orig_blen_bytes;
1880 const int op_type = PL_op->op_type;
1883 GV *const gv = MUTABLE_GV(*++MARK);
1884 IO *const io = GvIO(gv);
1887 if (op_type == OP_SYSWRITE && io) {
1888 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1890 if (MARK == SP - 1) {
1892 mXPUSHi(sv_len(sv));
1896 return Perl_tied_method(aTHX_ SV_CONST(WRITE), mark - 1, MUTABLE_SV(io), mg,
1897 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1907 if (!io || !IoIFP(io) || IoTYPE(io) == IoTYPE_RDONLY) {
1909 if (io && IoIFP(io))
1910 report_wrongway_fh(gv, '<');
1913 SETERRNO(EBADF,RMS_IFI);
1916 fd = PerlIO_fileno(IoIFP(io));
1918 SETERRNO(EBADF,SS_IVCHAN);
1923 /* Do this first to trigger any overloading. */
1924 buffer = SvPV_const(bufsv, blen);
1925 orig_blen_bytes = blen;
1926 doing_utf8 = DO_UTF8(bufsv);
1928 if (PerlIO_isutf8(IoIFP(io))) {
1929 if (!SvUTF8(bufsv)) {
1930 /* We don't modify the original scalar. */
1931 tmpbuf = bytes_to_utf8((const U8*) buffer, &blen);
1932 buffer = (char *) tmpbuf;
1936 else if (doing_utf8) {
1937 STRLEN tmplen = blen;
1938 U8 * const result = bytes_from_utf8((const U8*) buffer, &tmplen, &doing_utf8);
1941 buffer = (char *) tmpbuf;
1945 assert((char *)result == buffer);
1946 Perl_croak(aTHX_ "Wide character in %s", OP_DESC(PL_op));
1951 if (op_type == OP_SEND) {
1952 const int flags = SvIVx(*++MARK);
1955 char * const sockbuf = SvPVx(*++MARK, mlen);
1956 retval = PerlSock_sendto(fd, buffer, blen,
1957 flags, (struct sockaddr *)sockbuf, mlen);
1960 retval = PerlSock_send(fd, buffer, blen, flags);
1966 Size_t length = 0; /* This length is in characters. */
1972 /* The SV is bytes, and we've had to upgrade it. */
1973 blen_chars = orig_blen_bytes;
1975 /* The SV really is UTF-8. */
1976 /* Don't call sv_len_utf8 on a magical or overloaded
1977 scalar, as we might get back a different result. */
1978 blen_chars = sv_or_pv_len_utf8(bufsv, buffer, blen);
1985 length = blen_chars;
1987 #if Size_t_size > IVSIZE
1988 length = (Size_t)SvNVx(*++MARK);
1990 length = (Size_t)SvIVx(*++MARK);
1992 if ((SSize_t)length < 0) {
1994 DIE(aTHX_ "Negative length");
1999 offset = SvIVx(*++MARK);
2001 if (-offset > (IV)blen_chars) {
2003 DIE(aTHX_ "Offset outside string");
2005 offset += blen_chars;
2006 } else if (offset > (IV)blen_chars) {
2008 DIE(aTHX_ "Offset outside string");
2012 if (length > blen_chars - offset)
2013 length = blen_chars - offset;
2015 /* Here we convert length from characters to bytes. */
2016 if (tmpbuf || SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
2017 /* Either we had to convert the SV, or the SV is magical, or
2018 the SV has overloading, in which case we can't or mustn't
2019 or mustn't call it again. */
2021 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
2022 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
2024 /* It's a real UTF-8 SV, and it's not going to change under
2025 us. Take advantage of any cache. */
2027 I32 len_I32 = length;
2029 /* Convert the start and end character positions to bytes.
2030 Remember that the second argument to sv_pos_u2b is relative
2032 sv_pos_u2b(bufsv, &start, &len_I32);
2039 buffer = buffer+offset;
2041 #ifdef PERL_SOCK_SYSWRITE_IS_SEND
2042 if (IoTYPE(io) == IoTYPE_SOCKET) {
2043 retval = PerlSock_send(fd, buffer, length, 0);
2048 /* See the note at doio.c:do_print about filesize limits. --jhi */
2049 retval = PerlLIO_write(fd, buffer, length);
2057 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
2060 #if Size_t_size > IVSIZE
2080 * in Perl 5.12 and later, the additional parameter is a bitmask:
2083 * 2 = eof() <- ARGV magic
2085 * I'll rely on the compiler's trace flow analysis to decide whether to
2086 * actually assign this out here, or punt it into the only block where it is
2087 * used. Doing it out here is DRY on the condition logic.
2092 gv = PL_last_in_gv = MUTABLE_GV(POPs); /* eof(FH) */
2098 if (PL_op->op_flags & OPf_SPECIAL) {
2099 gv = PL_last_in_gv = GvEGVx(PL_argvgv); /* eof() - ARGV magic */
2103 gv = PL_last_in_gv; /* eof */
2111 if ((io = GvIO(gv)) && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) {
2112 return tied_method1(SV_CONST(EOF), SP, MUTABLE_SV(io), mg, newSVuv(which));
2115 if (!MAXARG && (PL_op->op_flags & OPf_SPECIAL)) { /* eof() */
2116 if (io && !IoIFP(io)) {
2117 if ((IoFLAGS(io) & IOf_START) && av_tindex(GvAVn(gv)) < 0) {
2119 IoFLAGS(io) &= ~IOf_START;
2120 do_open6(gv, "-", 1, NULL, NULL, 0);
2122 sv_setpvs(GvSV(gv), "-");
2124 GvSV(gv) = newSVpvs("-");
2125 SvSETMAGIC(GvSV(gv));
2127 else if (!nextargv(gv))
2132 PUSHs(boolSV(do_eof(gv)));
2142 if (MAXARG != 0 && (TOPs || POPs))
2143 PL_last_in_gv = MUTABLE_GV(POPs);
2150 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
2152 return tied_method0(SV_CONST(TELL), SP, MUTABLE_SV(io), mg);
2157 SETERRNO(EBADF,RMS_IFI);
2162 #if LSEEKSIZE > IVSIZE
2163 PUSHn( do_tell(gv) );
2165 PUSHi( do_tell(gv) );
2171 /* also used for: pp_seek() */
2176 const int whence = POPi;
2177 #if LSEEKSIZE > IVSIZE
2178 const Off_t offset = (Off_t)SvNVx(POPs);
2180 const Off_t offset = (Off_t)SvIVx(POPs);
2183 GV * const gv = PL_last_in_gv = MUTABLE_GV(POPs);
2184 IO *const io = GvIO(gv);
2187 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
2189 #if LSEEKSIZE > IVSIZE
2190 SV *const offset_sv = newSVnv((NV) offset);
2192 SV *const offset_sv = newSViv(offset);
2195 return tied_method2(SV_CONST(SEEK), SP, MUTABLE_SV(io), mg, offset_sv,
2200 if (PL_op->op_type == OP_SEEK)
2201 PUSHs(boolSV(do_seek(gv, offset, whence)));
2203 const Off_t sought = do_sysseek(gv, offset, whence);
2205 PUSHs(&PL_sv_undef);
2207 SV* const sv = sought ?
2208 #if LSEEKSIZE > IVSIZE
2213 : newSVpvn(zero_but_true, ZBTLEN);
2223 /* There seems to be no consensus on the length type of truncate()
2224 * and ftruncate(), both off_t and size_t have supporters. In
2225 * general one would think that when using large files, off_t is
2226 * at least as wide as size_t, so using an off_t should be okay. */
2227 /* XXX Configure probe for the length type of *truncate() needed XXX */
2230 #if Off_t_size > IVSIZE
2235 /* Checking for length < 0 is problematic as the type might or
2236 * might not be signed: if it is not, clever compilers will moan. */
2237 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
2240 SV * const sv = POPs;
2245 if (PL_op->op_flags & OPf_SPECIAL
2246 ? (tmpgv = gv_fetchsv(sv, 0, SVt_PVIO), 1)
2247 : !!(tmpgv = MAYBE_DEREF_GV(sv)) ) {
2254 TAINT_PROPER("truncate");
2255 if (!(fp = IoIFP(io))) {
2259 int fd = PerlIO_fileno(fp);
2261 SETERRNO(EBADF,RMS_IFI);
2266 if (ftruncate(fd, len) < 0)
2268 if (my_chsize(fd, len) < 0)
2275 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2276 io = MUTABLE_IO(SvRV(sv)); /* *main::FRED{IO} for example */
2277 goto do_ftruncate_io;
2280 const char * const name = SvPV_nomg_const_nolen(sv);
2281 TAINT_PROPER("truncate");
2283 if (truncate(name, len) < 0)
2287 const int tmpfd = PerlLIO_open(name, O_RDWR);
2290 SETERRNO(EBADF,RMS_IFI);
2293 if (my_chsize(tmpfd, len) < 0)
2295 PerlLIO_close(tmpfd);
2304 SETERRNO(EBADF,RMS_IFI);
2310 /* also used for: pp_fcntl() */
2315 SV * const argsv = POPs;
2316 const unsigned int func = POPu;
2318 GV * const gv = MUTABLE_GV(POPs);
2319 IO * const io = GvIOn(gv);
2325 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
2329 if (SvPOK(argsv) || !SvNIOK(argsv)) {
2332 s = SvPV_force(argsv, len);
2333 need = IOCPARM_LEN(func);
2335 s = Sv_Grow(argsv, need + 1);
2336 SvCUR_set(argsv, need);
2339 s[SvCUR(argsv)] = 17; /* a little sanity check here */
2342 retval = SvIV(argsv);
2343 s = INT2PTR(char*,retval); /* ouch */
2346 optype = PL_op->op_type;
2347 TAINT_PROPER(PL_op_desc[optype]);
2349 if (optype == OP_IOCTL)
2351 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
2353 DIE(aTHX_ "ioctl is not implemented");
2357 DIE(aTHX_ "fcntl is not implemented");
2359 #if defined(OS2) && defined(__EMX__)
2360 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
2362 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
2366 #if defined(HAS_IOCTL) || defined(HAS_FCNTL)
2368 if (s[SvCUR(argsv)] != 17)
2369 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
2371 s[SvCUR(argsv)] = 0; /* put our null back */
2372 SvSETMAGIC(argsv); /* Assume it has changed */
2381 PUSHp(zero_but_true, ZBTLEN);
2392 const int argtype = POPi;
2393 GV * const gv = MUTABLE_GV(POPs);
2394 IO *const io = GvIO(gv);
2395 PerlIO *const fp = io ? IoIFP(io) : NULL;
2397 /* XXX Looks to me like io is always NULL at this point */
2399 (void)PerlIO_flush(fp);
2400 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
2405 SETERRNO(EBADF,RMS_IFI);
2410 DIE(aTHX_ PL_no_func, "flock");
2421 const int protocol = POPi;
2422 const int type = POPi;
2423 const int domain = POPi;
2424 GV * const gv = MUTABLE_GV(POPs);
2425 IO * const io = GvIOn(gv);
2429 do_close(gv, FALSE);
2431 TAINT_PROPER("socket");
2432 fd = PerlSock_socket(domain, type, protocol);
2434 SETERRNO(EBADF,RMS_IFI);
2437 IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2438 IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
2439 IoTYPE(io) = IoTYPE_SOCKET;
2440 if (!IoIFP(io) || !IoOFP(io)) {
2441 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2442 if (IoOFP(io)) PerlIO_close(IoOFP(io));
2443 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
2446 #if defined(HAS_FCNTL) && defined(F_SETFD)
2447 if (fcntl(fd, F_SETFD, fd > PL_maxsysfd) < 0) /* ensure close-on-exec */
2457 #if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
2460 const int protocol = POPi;
2461 const int type = POPi;
2462 const int domain = POPi;
2464 GV * const gv2 = MUTABLE_GV(POPs);
2465 IO * const io2 = GvIOn(gv2);
2466 GV * const gv1 = MUTABLE_GV(POPs);
2467 IO * const io1 = GvIOn(gv1);
2470 do_close(gv1, FALSE);
2472 do_close(gv2, FALSE);
2474 TAINT_PROPER("socketpair");
2475 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
2477 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2478 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
2479 IoTYPE(io1) = IoTYPE_SOCKET;
2480 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2481 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
2482 IoTYPE(io2) = IoTYPE_SOCKET;
2483 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
2484 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2485 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
2486 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
2487 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2488 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
2489 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
2492 #if defined(HAS_FCNTL) && defined(F_SETFD)
2493 /* ensure close-on-exec */
2494 if ((fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd) < 0) ||
2495 (fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd) < 0))
2501 DIE(aTHX_ PL_no_sock_func, "socketpair");
2507 /* also used for: pp_connect() */
2512 SV * const addrsv = POPs;
2513 /* OK, so on what platform does bind modify addr? */
2515 GV * const gv = MUTABLE_GV(POPs);
2516 IO * const io = GvIOn(gv);
2523 fd = PerlIO_fileno(IoIFP(io));
2527 addr = SvPV_const(addrsv, len);
2528 op_type = PL_op->op_type;
2529 TAINT_PROPER(PL_op_desc[op_type]);
2530 if ((op_type == OP_BIND
2531 ? PerlSock_bind(fd, (struct sockaddr *)addr, len)
2532 : PerlSock_connect(fd, (struct sockaddr *)addr, len))
2540 SETERRNO(EBADF,SS_IVCHAN);
2547 const int backlog = POPi;
2548 GV * const gv = MUTABLE_GV(POPs);
2549 IO * const io = GvIOn(gv);
2554 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
2561 SETERRNO(EBADF,SS_IVCHAN);
2569 char namebuf[MAXPATHLEN];
2570 #if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
2571 Sock_size_t len = sizeof (struct sockaddr_in);
2573 Sock_size_t len = sizeof namebuf;
2575 GV * const ggv = MUTABLE_GV(POPs);
2576 GV * const ngv = MUTABLE_GV(POPs);
2579 IO * const gstio = GvIO(ggv);
2580 if (!gstio || !IoIFP(gstio))
2584 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
2587 /* Some platforms indicate zero length when an AF_UNIX client is
2588 * not bound. Simulate a non-zero-length sockaddr structure in
2590 namebuf[0] = 0; /* sun_len */
2591 namebuf[1] = AF_UNIX; /* sun_family */
2599 do_close(ngv, FALSE);
2600 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2601 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
2602 IoTYPE(nstio) = IoTYPE_SOCKET;
2603 if (!IoIFP(nstio) || !IoOFP(nstio)) {
2604 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2605 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
2606 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
2609 #if defined(HAS_FCNTL) && defined(F_SETFD)
2610 if (fcntl(fd, F_SETFD, fd > PL_maxsysfd) < 0) /* ensure close-on-exec */
2614 #ifdef __SCO_VERSION__
2615 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
2618 PUSHp(namebuf, len);
2622 report_evil_fh(ggv);
2623 SETERRNO(EBADF,SS_IVCHAN);
2633 const int how = POPi;
2634 GV * const gv = MUTABLE_GV(POPs);
2635 IO * const io = GvIOn(gv);
2640 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
2645 SETERRNO(EBADF,SS_IVCHAN);
2650 /* also used for: pp_gsockopt() */
2655 const int optype = PL_op->op_type;
2656 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
2657 const unsigned int optname = (unsigned int) POPi;
2658 const unsigned int lvl = (unsigned int) POPi;
2659 GV * const gv = MUTABLE_GV(POPs);
2660 IO * const io = GvIOn(gv);
2667 fd = PerlIO_fileno(IoIFP(io));
2673 (void)SvPOK_only(sv);
2677 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
2684 #if defined(__SYMBIAN32__)
2685 # define SETSOCKOPT_OPTION_VALUE_T void *
2687 # define SETSOCKOPT_OPTION_VALUE_T const char *
2689 /* XXX TODO: We need to have a proper type (a Configure probe,
2690 * etc.) for what the C headers think of the third argument of
2691 * setsockopt(), the option_value read-only buffer: is it
2692 * a "char *", or a "void *", const or not. Some compilers
2693 * don't take kindly to e.g. assuming that "char *" implicitly
2694 * promotes to a "void *", or to explicitly promoting/demoting
2695 * consts to non/vice versa. The "const void *" is the SUS
2696 * definition, but that does not fly everywhere for the above
2698 SETSOCKOPT_OPTION_VALUE_T buf;
2702 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2706 aint = (int)SvIV(sv);
2707 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
2710 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
2720 SETERRNO(EBADF,SS_IVCHAN);
2727 /* also used for: pp_getsockname() */
2732 const int optype = PL_op->op_type;
2733 GV * const gv = MUTABLE_GV(POPs);
2734 IO * const io = GvIOn(gv);
2742 sv = sv_2mortal(newSV(257));
2743 (void)SvPOK_only(sv);
2747 fd = PerlIO_fileno(IoIFP(io));
2751 case OP_GETSOCKNAME:
2752 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2755 case OP_GETPEERNAME:
2756 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2758 #if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2760 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";
2761 /* If the call succeeded, make sure we don't have a zeroed port/addr */
2762 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2763 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
2764 sizeof(u_short) + sizeof(struct in_addr))) {
2771 #ifdef BOGUS_GETNAME_RETURN
2772 /* Interactive Unix, getpeername() and getsockname()
2773 does not return valid namelen */
2774 if (len == BOGUS_GETNAME_RETURN)
2775 len = sizeof(struct sockaddr);
2784 SETERRNO(EBADF,SS_IVCHAN);
2793 /* also used for: pp_lstat() */
2804 if (PL_op->op_flags & OPf_REF ? (gv = cGVOP_gv, 1)
2805 : !!(sv=POPs, gv = MAYBE_DEREF_GV(sv))) {
2806 if (PL_op->op_type == OP_LSTAT) {
2807 if (gv != PL_defgv) {
2808 do_fstat_warning_check:
2809 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
2810 "lstat() on filehandle%s%"SVf,
2813 ? sv_2mortal(newSVhek(GvENAME_HEK(gv)))
2815 } else if (PL_laststype != OP_LSTAT)
2816 /* diag_listed_as: The stat preceding %s wasn't an lstat */
2817 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
2820 if (gv != PL_defgv) {
2824 PL_laststype = OP_STAT;
2825 PL_statgv = gv ? gv : (GV *)io;
2826 sv_setpvs(PL_statname, "");
2832 int fd = PerlIO_fileno(IoIFP(io));
2834 PL_laststatval = -1;
2835 SETERRNO(EBADF,RMS_IFI);
2837 PL_laststatval = PerlLIO_fstat(fd, &PL_statcache);
2840 } else if (IoDIRP(io)) {
2842 PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache);
2845 PL_laststatval = -1;
2848 else PL_laststatval = -1;
2849 if (PL_laststatval < 0 && !havefp) report_evil_fh(gv);
2852 if (PL_laststatval < 0) {
2858 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2859 io = MUTABLE_IO(SvRV(sv));
2860 if (PL_op->op_type == OP_LSTAT)
2861 goto do_fstat_warning_check;
2862 goto do_fstat_have_io;
2865 SvTAINTED_off(PL_statname); /* previous tainting irrelevant */
2866 sv_setpv(PL_statname, SvPV_nomg_const_nolen(sv));
2868 PL_laststype = PL_op->op_type;
2869 file = SvPV_nolen_const(PL_statname);
2870 if (PL_op->op_type == OP_LSTAT)
2871 PL_laststatval = PerlLIO_lstat(file, &PL_statcache);
2873 PL_laststatval = PerlLIO_stat(file, &PL_statcache);
2874 if (PL_laststatval < 0) {
2875 if (ckWARN(WARN_NEWLINE) && should_warn_nl(file)) {
2876 /* PL_warn_nl is constant */
2877 GCC_DIAG_IGNORE(-Wformat-nonliteral);
2878 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
2886 if (gimme != G_ARRAY) {
2887 if (gimme != G_VOID)
2888 XPUSHs(boolSV(max));
2894 mPUSHi(PL_statcache.st_dev);
2895 #if ST_INO_SIZE > IVSIZE
2896 mPUSHn(PL_statcache.st_ino);
2898 # if ST_INO_SIGN <= 0
2899 mPUSHi(PL_statcache.st_ino);
2901 mPUSHu(PL_statcache.st_ino);
2904 mPUSHu(PL_statcache.st_mode);
2905 mPUSHu(PL_statcache.st_nlink);
2907 sv_setuid(PUSHmortal, PL_statcache.st_uid);
2908 sv_setgid(PUSHmortal, PL_statcache.st_gid);
2910 #ifdef USE_STAT_RDEV
2911 mPUSHi(PL_statcache.st_rdev);
2913 PUSHs(newSVpvs_flags("", SVs_TEMP));
2915 #if Off_t_size > IVSIZE
2916 mPUSHn(PL_statcache.st_size);
2918 mPUSHi(PL_statcache.st_size);
2921 mPUSHn(PL_statcache.st_atime);
2922 mPUSHn(PL_statcache.st_mtime);
2923 mPUSHn(PL_statcache.st_ctime);
2925 mPUSHi(PL_statcache.st_atime);
2926 mPUSHi(PL_statcache.st_mtime);
2927 mPUSHi(PL_statcache.st_ctime);
2929 #ifdef USE_STAT_BLOCKS
2930 mPUSHu(PL_statcache.st_blksize);
2931 mPUSHu(PL_statcache.st_blocks);
2933 PUSHs(newSVpvs_flags("", SVs_TEMP));
2934 PUSHs(newSVpvs_flags("", SVs_TEMP));
2940 /* All filetest ops avoid manipulating the perl stack pointer in their main
2941 bodies (since commit d2c4d2d1e22d3125), and return using either
2942 S_ft_return_false() or S_ft_return_true(). These two helper functions are
2943 the only two which manipulate the perl stack. To ensure that no stack
2944 manipulation macros are used, the filetest ops avoid defining a local copy
2945 of the stack pointer with dSP. */
2947 /* If the next filetest is stacked up with this one
2948 (PL_op->op_private & OPpFT_STACKING), we leave
2949 the original argument on the stack for success,
2950 and skip the stacked operators on failure.
2951 The next few macros/functions take care of this.
2955 S_ft_return_false(pTHX_ SV *ret) {
2959 if (PL_op->op_flags & OPf_REF) XPUSHs(ret);
2963 if (PL_op->op_private & OPpFT_STACKING) {
2964 while (OP_IS_FILETEST(next->op_type)
2965 && next->op_private & OPpFT_STACKED)
2966 next = next->op_next;
2971 PERL_STATIC_INLINE OP *
2972 S_ft_return_true(pTHX_ SV *ret) {
2974 if (PL_op->op_flags & OPf_REF)
2975 XPUSHs(PL_op->op_private & OPpFT_STACKING ? (SV *)cGVOP_gv : (ret));
2976 else if (!(PL_op->op_private & OPpFT_STACKING))
2982 #define FT_RETURNNO return S_ft_return_false(aTHX_ &PL_sv_no)
2983 #define FT_RETURNUNDEF return S_ft_return_false(aTHX_ &PL_sv_undef)
2984 #define FT_RETURNYES return S_ft_return_true(aTHX_ &PL_sv_yes)
2986 #define tryAMAGICftest_MG(chr) STMT_START { \
2987 if ( (SvFLAGS(*PL_stack_sp) & (SVf_ROK|SVs_GMG)) \
2988 && PL_op->op_flags & OPf_KIDS) { \
2989 OP *next = S_try_amagic_ftest(aTHX_ chr); \
2990 if (next) return next; \
2995 S_try_amagic_ftest(pTHX_ char chr) {
2996 SV *const arg = *PL_stack_sp;
2999 if (!(PL_op->op_private & OPpFT_STACKING)) SvGETMAGIC(arg);
3003 const char tmpchr = chr;
3004 SV * const tmpsv = amagic_call(arg,
3005 newSVpvn_flags(&tmpchr, 1, SVs_TEMP),
3006 ftest_amg, AMGf_unary);
3011 return SvTRUE(tmpsv)
3012 ? S_ft_return_true(aTHX_ tmpsv) : S_ft_return_false(aTHX_ tmpsv);
3018 /* also used for: pp_fteexec() pp_fteread() pp_ftewrite() pp_ftrexec()
3024 /* Not const, because things tweak this below. Not bool, because there's
3025 no guarantee that OPpFT_ACCESS is <= CHAR_MAX */
3026 #if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
3027 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
3028 /* Giving some sort of initial value silences compilers. */
3030 int access_mode = R_OK;
3032 int access_mode = 0;
3035 /* access_mode is never used, but leaving use_access in makes the
3036 conditional compiling below much clearer. */
3039 Mode_t stat_mode = S_IRUSR;
3041 bool effective = FALSE;
3044 switch (PL_op->op_type) {
3045 case OP_FTRREAD: opchar = 'R'; break;
3046 case OP_FTRWRITE: opchar = 'W'; break;
3047 case OP_FTREXEC: opchar = 'X'; break;
3048 case OP_FTEREAD: opchar = 'r'; break;
3049 case OP_FTEWRITE: opchar = 'w'; break;
3050 case OP_FTEEXEC: opchar = 'x'; break;
3052 tryAMAGICftest_MG(opchar);
3054 switch (PL_op->op_type) {
3056 #if !(defined(HAS_ACCESS) && defined(R_OK))
3062 #if defined(HAS_ACCESS) && defined(W_OK)
3067 stat_mode = S_IWUSR;
3071 #if defined(HAS_ACCESS) && defined(X_OK)
3076 stat_mode = S_IXUSR;
3080 #ifdef PERL_EFF_ACCESS
3083 stat_mode = S_IWUSR;
3087 #ifndef PERL_EFF_ACCESS
3094 #ifdef PERL_EFF_ACCESS
3099 stat_mode = S_IXUSR;
3105 #if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
3106 const char *name = SvPV_nolen(*PL_stack_sp);
3108 # ifdef PERL_EFF_ACCESS
3109 result = PERL_EFF_ACCESS(name, access_mode);
3111 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
3117 result = access(name, access_mode);
3119 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
3130 result = my_stat_flags(0);
3133 if (cando(stat_mode, effective, &PL_statcache))
3139 /* also used for: pp_ftatime() pp_ftctime() pp_ftmtime() pp_ftsize() */
3144 const int op_type = PL_op->op_type;
3148 case OP_FTIS: opchar = 'e'; break;
3149 case OP_FTSIZE: opchar = 's'; break;
3150 case OP_FTMTIME: opchar = 'M'; break;
3151 case OP_FTCTIME: opchar = 'C'; break;
3152 case OP_FTATIME: opchar = 'A'; break;
3154 tryAMAGICftest_MG(opchar);
3156 result = my_stat_flags(0);
3159 if (op_type == OP_FTIS)
3162 /* You can't dTARGET inside OP_FTIS, because you'll get
3163 "panic: pad_sv po" - the op is not flagged to have a target. */
3167 #if Off_t_size > IVSIZE
3168 sv_setnv(TARG, (NV)PL_statcache.st_size);
3170 sv_setiv(TARG, (IV)PL_statcache.st_size);
3175 ((NV)PL_basetime - PL_statcache.st_mtime) / 86400.0 );
3179 ((NV)PL_basetime - PL_statcache.st_atime) / 86400.0 );
3183 ((NV)PL_basetime - PL_statcache.st_ctime) / 86400.0 );
3187 return SvTRUE_nomg(TARG)
3188 ? S_ft_return_true(aTHX_ TARG) : S_ft_return_false(aTHX_ TARG);
3193 /* also used for: pp_ftblk() pp_ftchr() pp_ftdir() pp_fteowned()
3194 * pp_ftfile() pp_ftpipe() pp_ftsgid() pp_ftsock()
3195 * pp_ftsuid() pp_ftsvtx() pp_ftzero() */
3202 switch (PL_op->op_type) {
3203 case OP_FTROWNED: opchar = 'O'; break;
3204 case OP_FTEOWNED: opchar = 'o'; break;
3205 case OP_FTZERO: opchar = 'z'; break;
3206 case OP_FTSOCK: opchar = 'S'; break;
3207 case OP_FTCHR: opchar = 'c'; break;
3208 case OP_FTBLK: opchar = 'b'; break;
3209 case OP_FTFILE: opchar = 'f'; break;
3210 case OP_FTDIR: opchar = 'd'; break;
3211 case OP_FTPIPE: opchar = 'p'; break;
3212 case OP_FTSUID: opchar = 'u'; break;
3213 case OP_FTSGID: opchar = 'g'; break;
3214 case OP_FTSVTX: opchar = 'k'; break;
3216 tryAMAGICftest_MG(opchar);
3218 /* I believe that all these three are likely to be defined on most every
3219 system these days. */
3221 if(PL_op->op_type == OP_FTSUID) {
3226 if(PL_op->op_type == OP_FTSGID) {
3231 if(PL_op->op_type == OP_FTSVTX) {
3236 result = my_stat_flags(0);
3239 switch (PL_op->op_type) {
3241 if (PL_statcache.st_uid == PerlProc_getuid())
3245 if (PL_statcache.st_uid == PerlProc_geteuid())
3249 if (PL_statcache.st_size == 0)
3253 if (S_ISSOCK(PL_statcache.st_mode))
3257 if (S_ISCHR(PL_statcache.st_mode))
3261 if (S_ISBLK(PL_statcache.st_mode))
3265 if (S_ISREG(PL_statcache.st_mode))
3269 if (S_ISDIR(PL_statcache.st_mode))
3273 if (S_ISFIFO(PL_statcache.st_mode))
3278 if (PL_statcache.st_mode & S_ISUID)
3284 if (PL_statcache.st_mode & S_ISGID)
3290 if (PL_statcache.st_mode & S_ISVTX)
3302 tryAMAGICftest_MG('l');
3303 result = my_lstat_flags(0);
3307 if (S_ISLNK(PL_statcache.st_mode))
3319 tryAMAGICftest_MG('t');
3321 if (PL_op->op_flags & OPf_REF)
3324 SV *tmpsv = *PL_stack_sp;
3325 if (!(gv = MAYBE_DEREF_GV_nomg(tmpsv))) {
3326 name = SvPV_nomg(tmpsv, namelen);
3327 gv = gv_fetchpvn_flags(name, namelen, SvUTF8(tmpsv), SVt_PVIO);
3331 if (GvIO(gv) && IoIFP(GvIOp(gv)))
3332 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
3333 else if (name && isDIGIT(*name))
3334 fd = grok_atou(name, NULL);
3338 SETERRNO(EBADF,RMS_IFI);
3341 if (PerlLIO_isatty(fd))
3347 /* also used for: pp_ftbinary() */
3361 tryAMAGICftest_MG(PL_op->op_type == OP_FTTEXT ? 'T' : 'B');
3363 if (PL_op->op_flags & OPf_REF)
3365 else if ((PL_op->op_private & (OPpFT_STACKED|OPpFT_AFTER_t))
3370 gv = MAYBE_DEREF_GV_nomg(sv);
3374 if (gv == PL_defgv) {
3376 io = SvTYPE(PL_statgv) == SVt_PVIO
3380 goto really_filename;
3385 sv_setpvs(PL_statname, "");
3386 io = GvIO(PL_statgv);
3388 PL_laststatval = -1;
3389 PL_laststype = OP_STAT;
3390 if (io && IoIFP(io)) {
3392 if (! PerlIO_has_base(IoIFP(io)))
3393 DIE(aTHX_ "-T and -B not implemented on filehandles");
3394 fd = PerlIO_fileno(IoIFP(io));
3396 SETERRNO(EBADF,RMS_IFI);
3399 PL_laststatval = PerlLIO_fstat(fd, &PL_statcache);
3400 if (PL_laststatval < 0)
3402 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
3403 if (PL_op->op_type == OP_FTTEXT)
3408 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
3409 i = PerlIO_getc(IoIFP(io));
3411 (void)PerlIO_ungetc(IoIFP(io),i);
3413 /* null file is anything */
3416 len = PerlIO_get_bufsiz(IoIFP(io));
3417 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
3418 /* sfio can have large buffers - limit to 512 */
3423 SETERRNO(EBADF,RMS_IFI);
3425 SETERRNO(EBADF,RMS_IFI);
3434 sv_setpv(PL_statname, SvPV_nomg_const_nolen(sv));
3436 file = SvPVX_const(PL_statname);
3438 if (!(fp = PerlIO_open(file, "r"))) {
3440 PL_laststatval = -1;
3441 PL_laststype = OP_STAT;
3443 if (ckWARN(WARN_NEWLINE) && should_warn_nl(file)) {
3444 /* PL_warn_nl is constant */
3445 GCC_DIAG_IGNORE(-Wformat-nonliteral);
3446 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
3451 PL_laststype = OP_STAT;
3452 fd = PerlIO_fileno(fp);
3454 (void)PerlIO_close(fp);
3455 SETERRNO(EBADF,RMS_IFI);
3458 PL_laststatval = PerlLIO_fstat(fd, &PL_statcache);
3459 if (PL_laststatval < 0) {
3460 (void)PerlIO_close(fp);
3461 SETERRNO(EBADF,RMS_IFI);
3464 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, NULL);
3465 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3466 (void)PerlIO_close(fp);
3468 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
3469 FT_RETURNNO; /* special case NFS directories */
3470 FT_RETURNYES; /* null file is anything */
3475 /* now scan s to look for textiness */
3477 #if defined(DOSISH) || defined(USEMYBINMODE)
3478 /* ignore trailing ^Z on short files */
3479 if (len && len < (I32)sizeof(tbuf) && tbuf[len-1] == 26)
3484 if (! is_ascii_string((U8 *) s, len)) {
3487 /* Here contains a non-ASCII. See if the entire string is UTF-8. But
3488 * the buffer may end in a partial character, so consider it UTF-8 if
3489 * the first non-UTF8 char is an ending partial */
3490 if (is_utf8_string_loc((U8 *) s, len, &ep)
3491 || ep + UTF8SKIP(ep) > (U8 *) (s + len))
3493 if (PL_op->op_type == OP_FTTEXT) {
3502 /* Here, is not UTF-8 or is entirely ASCII. Look through the buffer for
3503 * things that wouldn't be in ASCII text or rich ASCII text. Count these
3505 for (i = 0; i < len; i++, s++) {
3506 if (!*s) { /* null never allowed in text */
3510 #ifdef USE_LOCALE_CTYPE
3511 if (IN_LC_RUNTIME(LC_CTYPE)) {
3512 if ( isPRINT_LC(*s) || isSPACE_LC(*s)) {
3519 /* VT occurs so rarely in text, that we consider it odd */
3520 || (isSPACE_A(*s) && *s != VT_NATIVE)
3522 /* But there is a fair amount of backspaces and escapes in
3525 || *s == ESC_NATIVE)
3532 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
3543 const char *tmps = NULL;
3547 SV * const sv = POPs;
3548 if (PL_op->op_flags & OPf_SPECIAL) {
3549 gv = gv_fetchsv(sv, 0, SVt_PVIO);
3551 else if (!(gv = MAYBE_DEREF_GV(sv)))
3552 tmps = SvPV_nomg_const_nolen(sv);
3555 if( !gv && (!tmps || !*tmps) ) {
3556 HV * const table = GvHVn(PL_envgv);
3559 if ( (svp = hv_fetchs(table, "HOME", FALSE))
3560 || (svp = hv_fetchs(table, "LOGDIR", FALSE))
3562 || (svp = hv_fetchs(table, "SYS$LOGIN", FALSE))
3567 deprecate("chdir('') or chdir(undef) as chdir()");
3568 tmps = SvPV_nolen_const(*svp);
3572 TAINT_PROPER("chdir");
3577 TAINT_PROPER("chdir");
3580 IO* const io = GvIO(gv);
3583 PUSHi(fchdir(my_dirfd(IoDIRP(io))) >= 0);
3584 } else if (IoIFP(io)) {
3585 int fd = PerlIO_fileno(IoIFP(io));
3589 PUSHi(fchdir(fd) >= 0);
3599 DIE(aTHX_ PL_no_func, "fchdir");
3603 PUSHi( PerlDir_chdir(tmps) >= 0 );
3605 /* Clear the DEFAULT element of ENV so we'll get the new value
3607 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
3613 SETERRNO(EBADF,RMS_IFI);
3619 /* also used for: pp_chmod() pp_kill() pp_unlink() pp_utime() */
3623 dSP; dMARK; dTARGET;
3624 const I32 value = (I32)apply(PL_op->op_type, MARK, SP);
3635 char * const tmps = POPpx;
3636 TAINT_PROPER("chroot");
3637 PUSHi( chroot(tmps) >= 0 );
3640 DIE(aTHX_ PL_no_func, "chroot");
3648 const char * const tmps2 = POPpconstx;
3649 const char * const tmps = SvPV_nolen_const(TOPs);
3650 TAINT_PROPER("rename");
3652 anum = PerlLIO_rename(tmps, tmps2);
3654 if (!(anum = PerlLIO_stat(tmps, &PL_statbuf))) {
3655 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3658 if (PerlProc_geteuid() || PerlLIO_stat(tmps2, &PL_statbuf) < 0 || !S_ISDIR(PL_statbuf.st_mode))
3659 (void)UNLINK(tmps2);
3660 if (!(anum = link(tmps, tmps2)))
3661 anum = UNLINK(tmps);
3670 /* also used for: pp_symlink() */
3672 #if defined(HAS_LINK) || defined(HAS_SYMLINK)
3676 const int op_type = PL_op->op_type;
3680 if (op_type == OP_LINK)
3681 DIE(aTHX_ PL_no_func, "link");
3683 # ifndef HAS_SYMLINK
3684 if (op_type == OP_SYMLINK)
3685 DIE(aTHX_ PL_no_func, "symlink");
3689 const char * const tmps2 = POPpconstx;
3690 const char * const tmps = SvPV_nolen_const(TOPs);
3691 TAINT_PROPER(PL_op_desc[op_type]);
3693 # if defined(HAS_LINK)
3694 # if defined(HAS_SYMLINK)
3695 /* Both present - need to choose which. */
3696 (op_type == OP_LINK) ?
3697 PerlLIO_link(tmps, tmps2) : symlink(tmps, tmps2);
3699 /* Only have link, so calls to pp_symlink will have DIE()d above. */
3700 PerlLIO_link(tmps, tmps2);
3703 # if defined(HAS_SYMLINK)
3704 /* Only have symlink, so calls to pp_link will have DIE()d above. */
3705 symlink(tmps, tmps2);
3710 SETi( result >= 0 );
3715 /* also used for: pp_symlink() */
3720 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
3730 char buf[MAXPATHLEN];
3735 /* NOTE: if the length returned by readlink() is sizeof(buf) - 1,
3736 * it is impossible to know whether the result was truncated. */
3737 len = readlink(tmps, buf, sizeof(buf) - 1);
3746 RETSETUNDEF; /* just pretend it's a normal file */
3750 #if !defined(HAS_MKDIR) || !defined(HAS_RMDIR)
3752 S_dooneliner(pTHX_ const char *cmd, const char *filename)
3754 char * const save_filename = filename;
3759 Size_t size = strlen(cmd) + (strlen(filename) * 2) + 10;
3761 PERL_ARGS_ASSERT_DOONELINER;
3763 Newx(cmdline, size, char);
3764 my_strlcpy(cmdline, cmd, size);
3765 my_strlcat(cmdline, " ", size);
3766 for (s = cmdline + strlen(cmdline); *filename; ) {
3770 if (s - cmdline < size)
3771 my_strlcpy(s, " 2>&1", size - (s - cmdline));
3772 myfp = PerlProc_popen(cmdline, "r");
3776 SV * const tmpsv = sv_newmortal();
3777 /* Need to save/restore 'PL_rs' ?? */
3778 s = sv_gets(tmpsv, myfp, 0);
3779 (void)PerlProc_pclose(myfp);
3783 #ifdef HAS_SYS_ERRLIST
3788 /* you don't see this */
3789 const char * const errmsg = Strerror(e) ;
3792 if (instr(s, errmsg)) {
3799 #define EACCES EPERM
3801 if (instr(s, "cannot make"))
3802 SETERRNO(EEXIST,RMS_FEX);
3803 else if (instr(s, "existing file"))
3804 SETERRNO(EEXIST,RMS_FEX);
3805 else if (instr(s, "ile exists"))
3806 SETERRNO(EEXIST,RMS_FEX);
3807 else if (instr(s, "non-exist"))
3808 SETERRNO(ENOENT,RMS_FNF);
3809 else if (instr(s, "does not exist"))
3810 SETERRNO(ENOENT,RMS_FNF);
3811 else if (instr(s, "not empty"))
3812 SETERRNO(EBUSY,SS_DEVOFFLINE);
3813 else if (instr(s, "cannot access"))
3814 SETERRNO(EACCES,RMS_PRV);
3816 SETERRNO(EPERM,RMS_PRV);
3819 else { /* some mkdirs return no failure indication */
3820 anum = (PerlLIO_stat(save_filename, &PL_statbuf) >= 0);
3821 if (PL_op->op_type == OP_RMDIR)
3826 SETERRNO(EACCES,RMS_PRV); /* a guess */
3835 /* This macro removes trailing slashes from a directory name.
3836 * Different operating and file systems take differently to
3837 * trailing slashes. According to POSIX 1003.1 1996 Edition
3838 * any number of trailing slashes should be allowed.
3839 * Thusly we snip them away so that even non-conforming
3840 * systems are happy.
3841 * We should probably do this "filtering" for all
3842 * the functions that expect (potentially) directory names:
3843 * -d, chdir(), chmod(), chown(), chroot(), fcntl()?,
3844 * (mkdir()), opendir(), rename(), rmdir(), stat(). --jhi */
3846 #define TRIMSLASHES(tmps,len,copy) (tmps) = SvPV_const(TOPs, (len)); \
3847 if ((len) > 1 && (tmps)[(len)-1] == '/') { \
3850 } while ((len) > 1 && (tmps)[(len)-1] == '/'); \
3851 (tmps) = savepvn((tmps), (len)); \
3861 const int mode = (MAXARG > 1 && (TOPs||((void)POPs,0))) ? POPi : 0777;
3863 TRIMSLASHES(tmps,len,copy);
3865 TAINT_PROPER("mkdir");
3867 SETi( PerlDir_mkdir(tmps, mode) >= 0 );
3871 SETi( dooneliner("mkdir", tmps) );
3872 oldumask = PerlLIO_umask(0);
3873 PerlLIO_umask(oldumask);
3874 PerlLIO_chmod(tmps, (mode & ~oldumask) & 0777);
3889 TRIMSLASHES(tmps,len,copy);
3890 TAINT_PROPER("rmdir");
3892 SETi( PerlDir_rmdir(tmps) >= 0 );
3894 SETi( dooneliner("rmdir", tmps) );
3901 /* Directory calls. */
3905 #if defined(Direntry_t) && defined(HAS_READDIR)
3907 const char * const dirname = POPpconstx;
3908 GV * const gv = MUTABLE_GV(POPs);
3909 IO * const io = GvIOn(gv);
3911 if ((IoIFP(io) || IoOFP(io)))
3912 Perl_ck_warner_d(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
3913 "Opening filehandle %"HEKf" also as a directory",
3914 HEKfARG(GvENAME_HEK(gv)) );
3916 PerlDir_close(IoDIRP(io));
3917 if (!(IoDIRP(io) = PerlDir_open(dirname)))
3923 SETERRNO(EBADF,RMS_DIR);
3926 DIE(aTHX_ PL_no_dir_func, "opendir");
3932 #if !defined(Direntry_t) || !defined(HAS_READDIR)
3933 DIE(aTHX_ PL_no_dir_func, "readdir");
3935 #if !defined(I_DIRENT) && !defined(VMS)
3936 Direntry_t *readdir (DIR *);
3941 const I32 gimme = GIMME;
3942 GV * const gv = MUTABLE_GV(POPs);
3943 const Direntry_t *dp;
3944 IO * const io = GvIOn(gv);
3947 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
3948 "readdir() attempted on invalid dirhandle %"HEKf,
3949 HEKfARG(GvENAME_HEK(gv)));
3954 dp = (Direntry_t *)PerlDir_read(IoDIRP(io));
3958 sv = newSVpvn(dp->d_name, dp->d_namlen);
3960 sv = newSVpv(dp->d_name, 0);
3962 if (!(IoFLAGS(io) & IOf_UNTAINT))
3965 } while (gimme == G_ARRAY);
3967 if (!dp && gimme != G_ARRAY)
3974 SETERRNO(EBADF,RMS_ISI);
3975 if (GIMME == G_ARRAY)
3984 #if defined(HAS_TELLDIR) || defined(telldir)
3986 /* XXX does _anyone_ need this? --AD 2/20/1998 */
3987 /* XXX netbsd still seemed to.
3988 XXX HAS_TELLDIR_PROTO is new style, NEED_TELLDIR_PROTO is old style.
3989 --JHI 1999-Feb-02 */
3990 # if !defined(HAS_TELLDIR_PROTO) || defined(NEED_TELLDIR_PROTO)
3991 long telldir (DIR *);
3993 GV * const gv = MUTABLE_GV(POPs);
3994 IO * const io = GvIOn(gv);
3997 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
3998 "telldir() attempted on invalid dirhandle %"HEKf,
3999 HEKfARG(GvENAME_HEK(gv)));
4003 PUSHi( PerlDir_tell(IoDIRP(io)) );
4007 SETERRNO(EBADF,RMS_ISI);
4010 DIE(aTHX_ PL_no_dir_func, "telldir");
4016 #if defined(HAS_SEEKDIR) || defined(seekdir)
4018 const long along = POPl;
4019 GV * const gv = MUTABLE_GV(POPs);
4020 IO * const io = GvIOn(gv);
4023 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
4024 "seekdir() attempted on invalid dirhandle %"HEKf,
4025 HEKfARG(GvENAME_HEK(gv)));
4028 (void)PerlDir_seek(IoDIRP(io), along);
4033 SETERRNO(EBADF,RMS_ISI);
4036 DIE(aTHX_ PL_no_dir_func, "seekdir");
4042 #if defined(HAS_REWINDDIR) || defined(rewinddir)
4044 GV * const gv = MUTABLE_GV(POPs);
4045 IO * const io = GvIOn(gv);
4048 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
4049 "rewinddir() attempted on invalid dirhandle %"HEKf,
4050 HEKfARG(GvENAME_HEK(gv)));
4053 (void)PerlDir_rewind(IoDIRP(io));
4057 SETERRNO(EBADF,RMS_ISI);
4060 DIE(aTHX_ PL_no_dir_func, "rewinddir");
4066 #if defined(Direntry_t) && defined(HAS_READDIR)
4068 GV * const gv = MUTABLE_GV(POPs);
4069 IO * const io = GvIOn(gv);
4072 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
4073 "closedir() attempted on invalid dirhandle %"HEKf,
4074 HEKfARG(GvENAME_HEK(gv)));
4077 #ifdef VOID_CLOSEDIR
4078 PerlDir_close(IoDIRP(io));
4080 if (PerlDir_close(IoDIRP(io)) < 0) {
4081 IoDIRP(io) = 0; /* Don't try to close again--coredumps on SysV */
4090 SETERRNO(EBADF,RMS_IFI);
4093 DIE(aTHX_ PL_no_dir_func, "closedir");
4097 /* Process control. */
4104 #ifdef HAS_SIGPROCMASK
4105 sigset_t oldmask, newmask;
4109 PERL_FLUSHALL_FOR_CHILD;
4110 #ifdef HAS_SIGPROCMASK
4111 sigfillset(&newmask);
4112 sigprocmask(SIG_SETMASK, &newmask, &oldmask);
4114 childpid = PerlProc_fork();
4115 if (childpid == 0) {
4119 for (sig = 1; sig < SIG_SIZE; sig++)
4120 PL_psig_pend[sig] = 0;
4122 #ifdef HAS_SIGPROCMASK
4125 sigprocmask(SIG_SETMASK, &oldmask, NULL);
4132 #ifdef PERL_USES_PL_PIDSTATUS
4133 hv_clear(PL_pidstatus); /* no kids, so don't wait for 'em */
4139 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4144 PERL_FLUSHALL_FOR_CHILD;
4145 childpid = PerlProc_fork();
4151 DIE(aTHX_ PL_no_func, "fork");
4158 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(__LIBCATAMOUNT__)
4163 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
4164 childpid = wait4pid(-1, &argflags, 0);
4166 while ((childpid = wait4pid(-1, &argflags, 0)) == -1 &&
4171 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4172 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
4173 STATUS_NATIVE_CHILD_SET((childpid && childpid != -1) ? argflags : -1);
4175 STATUS_NATIVE_CHILD_SET((childpid > 0) ? argflags : -1);
4180 DIE(aTHX_ PL_no_func, "wait");
4186 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(__LIBCATAMOUNT__)
4188 const int optype = POPi;
4189 const Pid_t pid = TOPi;
4193 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
4194 result = wait4pid(pid, &argflags, optype);
4196 while ((result = wait4pid(pid, &argflags, optype)) == -1 &&
4201 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4202 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
4203 STATUS_NATIVE_CHILD_SET((result && result != -1) ? argflags : -1);
4205 STATUS_NATIVE_CHILD_SET((result > 0) ? argflags : -1);
4210 DIE(aTHX_ PL_no_func, "waitpid");
4216 dSP; dMARK; dORIGMARK; dTARGET;
4217 #if defined(__LIBCATAMOUNT__)
4218 PL_statusvalue = -1;
4227 while (++MARK <= SP) {
4228 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
4233 TAINT_PROPER("system");
4235 PERL_FLUSHALL_FOR_CHILD;
4236 #if (defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(OS2) || defined(PERL_MICRO)
4241 #ifdef HAS_SIGPROCMASK
4242 sigset_t newset, oldset;
4245 if (PerlProc_pipe(pp) >= 0)
4247 #ifdef HAS_SIGPROCMASK
4248 sigemptyset(&newset);
4249 sigaddset(&newset, SIGCHLD);
4250 sigprocmask(SIG_BLOCK, &newset, &oldset);
4252 while ((childpid = PerlProc_fork()) == -1) {
4253 if (errno != EAGAIN) {
4258 PerlLIO_close(pp[0]);
4259 PerlLIO_close(pp[1]);
4261 #ifdef HAS_SIGPROCMASK
4262 sigprocmask(SIG_SETMASK, &oldset, NULL);
4269 Sigsave_t ihand,qhand; /* place to save signals during system() */
4273 PerlLIO_close(pp[1]);
4275 rsignal_save(SIGINT, (Sighandler_t) SIG_IGN, &ihand);
4276 rsignal_save(SIGQUIT, (Sighandler_t) SIG_IGN, &qhand);
4279 result = wait4pid(childpid, &status, 0);
4280 } while (result == -1 && errno == EINTR);
4282 #ifdef HAS_SIGPROCMASK
4283 sigprocmask(SIG_SETMASK, &oldset, NULL);
4285 (void)rsignal_restore(SIGINT, &ihand);
4286 (void)rsignal_restore(SIGQUIT, &qhand);
4288 STATUS_NATIVE_CHILD_SET(result == -1 ? -1 : status);
4289 do_execfree(); /* free any memory child malloced on fork */
4296 while (n < sizeof(int)) {
4297 n1 = PerlLIO_read(pp[0],
4298 (void*)(((char*)&errkid)+n),
4304 PerlLIO_close(pp[0]);
4305 if (n) { /* Error */
4306 if (n != sizeof(int))
4307 DIE(aTHX_ "panic: kid popen errno read, n=%u", n);
4308 errno = errkid; /* Propagate errno from kid */
4309 STATUS_NATIVE_CHILD_SET(-1);
4312 XPUSHi(STATUS_CURRENT);
4315 #ifdef HAS_SIGPROCMASK
4316 sigprocmask(SIG_SETMASK, &oldset, NULL);
4319 PerlLIO_close(pp[0]);
4320 #if defined(HAS_FCNTL) && defined(F_SETFD)
4321 if (fcntl(pp[1], F_SETFD, FD_CLOEXEC) < 0)
4325 if (PL_op->op_flags & OPf_STACKED) {
4326 SV * const really = *++MARK;
4327 value = (I32)do_aexec5(really, MARK, SP, pp[1], did_pipes);
4329 else if (SP - MARK != 1)
4330 value = (I32)do_aexec5(NULL, MARK, SP, pp[1], did_pipes);
4332 value = (I32)do_exec3(SvPVx_nolen(sv_mortalcopy(*SP)), pp[1], did_pipes);
4336 #else /* ! FORK or VMS or OS/2 */
4339 if (PL_op->op_flags & OPf_STACKED) {
4340 SV * const really = *++MARK;
4341 # if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__) || defined(__VMS)
4342 value = (I32)do_aspawn(really, MARK, SP);
4344 value = (I32)do_aspawn(really, (void **)MARK, (void **)SP);
4347 else if (SP - MARK != 1) {
4348 # if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__) || defined(__VMS)
4349 value = (I32)do_aspawn(NULL, MARK, SP);
4351 value = (I32)do_aspawn(NULL, (void **)MARK, (void **)SP);
4355 value = (I32)do_spawn(SvPVx_nolen(sv_mortalcopy(*SP)));
4357 if (PL_statusvalue == -1) /* hint that value must be returned as is */
4359 STATUS_NATIVE_CHILD_SET(value);
4362 XPUSHi(result ? value : STATUS_CURRENT);
4363 #endif /* !FORK or VMS or OS/2 */
4370 dSP; dMARK; dORIGMARK; dTARGET;
4375 while (++MARK <= SP) {
4376 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
4381 TAINT_PROPER("exec");
4383 PERL_FLUSHALL_FOR_CHILD;
4384 if (PL_op->op_flags & OPf_STACKED) {
4385 SV * const really = *++MARK;
4386 value = (I32)do_aexec(really, MARK, SP);
4388 else if (SP - MARK != 1)
4390 value = (I32)vms_do_aexec(NULL, MARK, SP);
4392 value = (I32)do_aexec(NULL, MARK, SP);
4396 value = (I32)vms_do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
4398 value = (I32)do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
4411 XPUSHi( getppid() );
4414 DIE(aTHX_ PL_no_func, "getppid");
4424 (MAXARG < 1) ? 0 : TOPs ? SvIVx(POPs) : ((void)POPs, 0);
4427 pgrp = (I32)BSD_GETPGRP(pid);
4429 if (pid != 0 && pid != PerlProc_getpid())
4430 DIE(aTHX_ "POSIX getpgrp can't take an argument");
4436 DIE(aTHX_ PL_no_func, "getpgrp");
4446 pgrp = MAXARG == 2 && (TOPs||POPs) ? POPi : 0;
4447 if (MAXARG > 0) pid = TOPs && TOPi;
4453 TAINT_PROPER("setpgrp");
4455 SETi( BSD_SETPGRP(pid, pgrp) >= 0 );
4457 if ((pgrp != 0 && pgrp != PerlProc_getpid())
4458 || (pid != 0 && pid != PerlProc_getpid()))
4460 DIE(aTHX_ "setpgrp can't take arguments");
4462 SETi( setpgrp() >= 0 );
4463 #endif /* USE_BSDPGRP */
4466 DIE(aTHX_ PL_no_func, "setpgrp");
4470 #if defined(__GLIBC__) && ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3) || (__GLIBC__ > 2))
4471 # define PRIORITY_WHICH_T(which) (__priority_which_t)which
4473 # define PRIORITY_WHICH_T(which) which
4478 #ifdef HAS_GETPRIORITY
4480 const int who = POPi;
4481 const int which = TOPi;
4482 SETi( getpriority(PRIORITY_WHICH_T(which), who) );
4485 DIE(aTHX_ PL_no_func, "getpriority");
4491 #ifdef HAS_SETPRIORITY
4493 const int niceval = POPi;
4494 const int who = POPi;
4495 const int which = TOPi;
4496 TAINT_PROPER("setpriority");
4497 SETi( setpriority(PRIORITY_WHICH_T(which), who, niceval) >= 0 );
4500 DIE(aTHX_ PL_no_func, "setpriority");
4504 #undef PRIORITY_WHICH_T
4512 XPUSHn( time(NULL) );
4514 XPUSHi( time(NULL) );
4523 struct tms timesbuf;
4526 (void)PerlProc_times(×buf);
4528 mPUSHn(((NV)timesbuf.tms_utime)/(NV)PL_clocktick);
4529 if (GIMME == G_ARRAY) {
4530 mPUSHn(((NV)timesbuf.tms_stime)/(NV)PL_clocktick);
4531 mPUSHn(((NV)timesbuf.tms_cutime)/(NV)PL_clocktick);
4532 mPUSHn(((NV)timesbuf.tms_cstime)/(NV)PL_clocktick);
4540 if (GIMME == G_ARRAY) {
4547 DIE(aTHX_ "times not implemented");
4549 #endif /* HAS_TIMES */
4552 /* The 32 bit int year limits the times we can represent to these
4553 boundaries with a few days wiggle room to account for time zone
4556 /* Sat Jan 3 00:00:00 -2147481748 */
4557 #define TIME_LOWER_BOUND -67768100567755200.0
4558 /* Sun Dec 29 12:00:00 2147483647 */
4559 #define TIME_UPPER_BOUND 67767976233316800.0
4562 /* also used for: pp_localtime() */
4570 const char *opname = PL_op->op_type == OP_LOCALTIME ? "localtime" : "gmtime";
4571 static const char * const dayname[] =
4572 {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
4573 static const char * const monname[] =
4574 {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
4575 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
4577 if (MAXARG < 1 || (!TOPs && ((void)POPs, 1))) {
4580 when = (Time64_T)now;
4583 NV input = Perl_floor(POPn);
4584 when = (Time64_T)input;
4585 if (when != input) {
4586 /* diag_listed_as: gmtime(%f) too large */
4587 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4588 "%s(%.0" NVff ") too large", opname, input);
4592 if ( TIME_LOWER_BOUND > when ) {
4593 /* diag_listed_as: gmtime(%f) too small */
4594 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4595 "%s(%.0" NVff ") too small", opname, when);
4598 else if( when > TIME_UPPER_BOUND ) {
4599 /* diag_listed_as: gmtime(%f) too small */
4600 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4601 "%s(%.0" NVff ") too large", opname, when);
4605 if (PL_op->op_type == OP_LOCALTIME)
4606 err = S_localtime64_r(&when, &tmbuf);
4608 err = S_gmtime64_r(&when, &tmbuf);
4612 /* diag_listed_as: gmtime(%f) failed */
4613 /* XXX %lld broken for quads */
4614 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4615 "%s(%.0" NVff ") failed", opname, when);
4618 if (GIMME != G_ARRAY) { /* scalar context */
4624 mPUSHs(Perl_newSVpvf(aTHX_ "%s %s %2d %02d:%02d:%02d %"IVdf,
4625 dayname[tmbuf.tm_wday],
4626 monname[tmbuf.tm_mon],
4631 (IV)tmbuf.tm_year + 1900));
4634 else { /* list context */
4640 mPUSHi(tmbuf.tm_sec);
4641 mPUSHi(tmbuf.tm_min);
4642 mPUSHi(tmbuf.tm_hour);
4643 mPUSHi(tmbuf.tm_mday);
4644 mPUSHi(tmbuf.tm_mon);
4645 mPUSHn(tmbuf.tm_year);
4646 mPUSHi(tmbuf.tm_wday);
4647 mPUSHi(tmbuf.tm_yday);
4648 mPUSHi(tmbuf.tm_isdst);
4659 anum = alarm((unsigned int)anum);
4665 DIE(aTHX_ PL_no_func, "alarm");
4676 (void)time(&lasttime);
4677 if (MAXARG < 1 || (!TOPs && !POPs))
4681 PerlProc_sleep((unsigned int)duration);
4684 XPUSHi(when - lasttime);
4688 /* Shared memory. */
4689 /* Merged with some message passing. */
4691 /* also used for: pp_msgrcv() pp_msgsnd() pp_semop() pp_shmread() */
4695 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4696 dSP; dMARK; dTARGET;
4697 const int op_type = PL_op->op_type;
4702 value = (I32)(do_msgsnd(MARK, SP) >= 0);
4705 value = (I32)(do_msgrcv(MARK, SP) >= 0);
4708 value = (I32)(do_semop(MARK, SP) >= 0);
4711 value = (I32)(do_shmio(op_type, MARK, SP) >= 0);
4719 return Perl_pp_semget(aTHX);
4725 /* also used for: pp_msgget() pp_shmget() */
4729 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4730 dSP; dMARK; dTARGET;
4731 const int anum = do_ipcget(PL_op->op_type, MARK, SP);
4738 DIE(aTHX_ "System V IPC is not implemented on this machine");
4742 /* also used for: pp_msgctl() pp_shmctl() */
4746 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4747 dSP; dMARK; dTARGET;
4748 const int anum = do_ipcctl(PL_op->op_type, MARK, SP);
4756 PUSHp(zero_but_true, ZBTLEN);
4760 return Perl_pp_semget(aTHX);
4764 /* I can't const this further without getting warnings about the types of
4765 various arrays passed in from structures. */
4767 S_space_join_names_mortal(pTHX_ char *const *array)
4771 PERL_ARGS_ASSERT_SPACE_JOIN_NAMES_MORTAL;
4773 if (array && *array) {
4774 target = newSVpvs_flags("", SVs_TEMP);
4776 sv_catpv(target, *array);
4779 sv_catpvs(target, " ");
4782 target = sv_mortalcopy(&PL_sv_no);
4787 /* Get system info. */
4789 /* also used for: pp_ghbyaddr() pp_ghbyname() */
4793 #if defined(HAS_GETHOSTBYNAME) || defined(HAS_GETHOSTBYADDR) || defined(HAS_GETHOSTENT)
4795 I32 which = PL_op->op_type;
4798 #ifndef HAS_GETHOST_PROTOS /* XXX Do we need individual probes? */
4799 struct hostent *gethostbyaddr(Netdb_host_t, Netdb_hlen_t, int);
4800 struct hostent *gethostbyname(Netdb_name_t);
4801 struct hostent *gethostent(void);
4803 struct hostent *hent = NULL;
4807 if (which == OP_GHBYNAME) {
4808 #ifdef HAS_GETHOSTBYNAME
4809 const char* const name = POPpbytex;
4810 hent = PerlSock_gethostbyname(name);
4812 DIE(aTHX_ PL_no_sock_func, "gethostbyname");
4815 else if (which == OP_GHBYADDR) {
4816 #ifdef HAS_GETHOSTBYADDR
4817 const int addrtype = POPi;
4818 SV * const addrsv = POPs;
4820 const char *addr = (char *)SvPVbyte(addrsv, addrlen);
4822 hent = PerlSock_gethostbyaddr(addr, (Netdb_hlen_t) addrlen, addrtype);
4824 DIE(aTHX_ PL_no_sock_func, "gethostbyaddr");
4828 #ifdef HAS_GETHOSTENT
4829 hent = PerlSock_gethostent();
4831 DIE(aTHX_ PL_no_sock_func, "gethostent");
4834 #ifdef HOST_NOT_FOUND
4836 #ifdef USE_REENTRANT_API
4837 # ifdef USE_GETHOSTENT_ERRNO
4838 h_errno = PL_reentrant_buffer->_gethostent_errno;
4841 STATUS_UNIX_SET(h_errno);
4845 if (GIMME != G_ARRAY) {
4846 PUSHs(sv = sv_newmortal());
4848 if (which == OP_GHBYNAME) {
4850 sv_setpvn(sv, hent->h_addr, hent->h_length);
4853 sv_setpv(sv, (char*)hent->h_name);
4859 mPUSHs(newSVpv((char*)hent->h_name, 0));
4860 PUSHs(space_join_names_mortal(hent->h_aliases));
4861 mPUSHi(hent->h_addrtype);
4862 len = hent->h_length;
4865 for (elem = hent->h_addr_list; elem && *elem; elem++) {
4866 mXPUSHp(*elem, len);
4870 mPUSHp(hent->h_addr, len);
4872 PUSHs(sv_mortalcopy(&PL_sv_no));
4877 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
4881 /* also used for: pp_gnbyaddr() pp_gnbyname() */
4885 #if defined(HAS_GETNETBYNAME) || defined(HAS_GETNETBYADDR) || defined(HAS_GETNETENT)
4887 I32 which = PL_op->op_type;
4889 #ifndef HAS_GETNET_PROTOS /* XXX Do we need individual probes? */
4890 struct netent *getnetbyaddr(Netdb_net_t, int);
4891 struct netent *getnetbyname(Netdb_name_t);
4892 struct netent *getnetent(void);
4894 struct netent *nent;
4896 if (which == OP_GNBYNAME){
4897 #ifdef HAS_GETNETBYNAME
4898 const char * const name = POPpbytex;
4899 nent = PerlSock_getnetbyname(name);
4901 DIE(aTHX_ PL_no_sock_func, "getnetbyname");
4904 else if (which == OP_GNBYADDR) {
4905 #ifdef HAS_GETNETBYADDR
4906 const int addrtype = POPi;
4907 const Netdb_net_t addr = (Netdb_net_t) (U32)POPu;
4908 nent = PerlSock_getnetbyaddr(addr, addrtype);
4910 DIE(aTHX_ PL_no_sock_func, "getnetbyaddr");
4914 #ifdef HAS_GETNETENT
4915 nent = PerlSock_getnetent();
4917 DIE(aTHX_ PL_no_sock_func, "getnetent");
4920 #ifdef HOST_NOT_FOUND
4922 #ifdef USE_REENTRANT_API
4923 # ifdef USE_GETNETENT_ERRNO
4924 h_errno = PL_reentrant_buffer->_getnetent_errno;
4927 STATUS_UNIX_SET(h_errno);
4932 if (GIMME != G_ARRAY) {
4933 PUSHs(sv = sv_newmortal());
4935 if (which == OP_GNBYNAME)
4936 sv_setiv(sv, (IV)nent->n_net);
4938 sv_setpv(sv, nent->n_name);
4944 mPUSHs(newSVpv(nent->n_name, 0));
4945 PUSHs(space_join_names_mortal(nent->n_aliases));
4946 mPUSHi(nent->n_addrtype);
4947 mPUSHi(nent->n_net);
4952 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
4957 /* also used for: pp_gpbyname() pp_gpbynumber() */
4961 #if defined(HAS_GETPROTOBYNAME) || defined(HAS_GETPROTOBYNUMBER) || defined(HAS_GETPROTOENT)
4963 I32 which = PL_op->op_type;
4965 #ifndef HAS_GETPROTO_PROTOS /* XXX Do we need individual probes? */
4966 struct protoent *getprotobyname(Netdb_name_t);
4967 struct protoent *getprotobynumber(int);
4968 struct protoent *getprotoent(void);
4970 struct protoent *pent;
4972 if (which == OP_GPBYNAME) {
4973 #ifdef HAS_GETPROTOBYNAME
4974 const char* const name = POPpbytex;
4975 pent = PerlSock_getprotobyname(name);
4977 DIE(aTHX_ PL_no_sock_func, "getprotobyname");
4980 else if (which == OP_GPBYNUMBER) {
4981 #ifdef HAS_GETPROTOBYNUMBER
4982 const int number = POPi;
4983 pent = PerlSock_getprotobynumber(number);
4985 DIE(aTHX_ PL_no_sock_func, "getprotobynumber");
4989 #ifdef HAS_GETPROTOENT
4990 pent = PerlSock_getprotoent();
4992 DIE(aTHX_ PL_no_sock_func, "getprotoent");
4996 if (GIMME != G_ARRAY) {
4997 PUSHs(sv = sv_newmortal());
4999 if (which == OP_GPBYNAME)
5000 sv_setiv(sv, (IV)pent->p_proto);
5002 sv_setpv(sv, pent->p_name);
5008 mPUSHs(newSVpv(pent->p_name, 0));
5009 PUSHs(space_join_names_mortal(pent->p_aliases));
5010 mPUSHi(pent->p_proto);
5015 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5020 /* also used for: pp_gsbyname() pp_gsbyport() */
5024 #if defined(HAS_GETSERVBYNAME) || defined(HAS_GETSERVBYPORT) || defined(HAS_GETSERVENT)
5026 I32 which = PL_op->op_type;
5028 #ifndef HAS_GETSERV_PROTOS /* XXX Do we need individual probes? */
5029 struct servent *getservbyname(Netdb_name_t, Netdb_name_t);
5030 struct servent *getservbyport(int, Netdb_name_t);
5031 struct servent *getservent(void);
5033 struct servent *sent;
5035 if (which == OP_GSBYNAME) {
5036 #ifdef HAS_GETSERVBYNAME
5037 const char * const proto = POPpbytex;
5038 const char * const name = POPpbytex;
5039 sent = PerlSock_getservbyname(name, (proto && !*proto) ? NULL : proto);
5041 DIE(aTHX_ PL_no_sock_func, "getservbyname");
5044 else if (which == OP_GSBYPORT) {
5045 #ifdef HAS_GETSERVBYPORT
5046 const char * const proto = POPpbytex;
5047 unsigned short port = (unsigned short)POPu;
5048 port = PerlSock_htons(port);
5049 sent = PerlSock_getservbyport(port, (proto && !*proto) ? NULL : proto);
5051 DIE(aTHX_ PL_no_sock_func, "getservbyport");
5055 #ifdef HAS_GETSERVENT
5056 sent = PerlSock_getservent();
5058 DIE(aTHX_ PL_no_sock_func, "getservent");
5062 if (GIMME != G_ARRAY) {
5063 PUSHs(sv = sv_newmortal());
5065 if (which == OP_GSBYNAME) {
5066 sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
5069 sv_setpv(sv, sent->s_name);
5075 mPUSHs(newSVpv(sent->s_name, 0));
5076 PUSHs(space_join_names_mortal(sent->s_aliases));
5077 mPUSHi(PerlSock_ntohs(sent->s_port));
5078 mPUSHs(newSVpv(sent->s_proto, 0));
5083 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5088 /* also used for: pp_snetent() pp_sprotoent() pp_sservent() */
5093 const int stayopen = TOPi;
5094 switch(PL_op->op_type) {
5096 #ifdef HAS_SETHOSTENT
5097 PerlSock_sethostent(stayopen);
5099 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5102 #ifdef HAS_SETNETENT
5104 PerlSock_setnetent(stayopen);
5106 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5110 #ifdef HAS_SETPROTOENT
5111 PerlSock_setprotoent(stayopen);
5113 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5117 #ifdef HAS_SETSERVENT
5118 PerlSock_setservent(stayopen);
5120 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5128 /* also used for: pp_egrent() pp_enetent() pp_eprotoent() pp_epwent()
5129 * pp_eservent() pp_sgrent() pp_spwent() */
5134 switch(PL_op->op_type) {
5136 #ifdef HAS_ENDHOSTENT
5137 PerlSock_endhostent();
5139 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5143 #ifdef HAS_ENDNETENT
5144 PerlSock_endnetent();
5146 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5150 #ifdef HAS_ENDPROTOENT
5151 PerlSock_endprotoent();
5153 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5157 #ifdef HAS_ENDSERVENT
5158 PerlSock_endservent();
5160 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5164 #if defined(HAS_GROUP) && defined(HAS_SETGRENT)
5167 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5171 #if defined(HAS_GROUP) && defined(HAS_ENDGRENT)
5174 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5178 #if defined(HAS_PASSWD) && defined(HAS_SETPWENT)
5181 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5185 #if defined(HAS_PASSWD) && defined(HAS_ENDPWENT)
5188 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5197 /* also used for: pp_gpwnam() pp_gpwuid() */
5203 I32 which = PL_op->op_type;
5205 struct passwd *pwent = NULL;
5207 * We currently support only the SysV getsp* shadow password interface.
5208 * The interface is declared in <shadow.h> and often one needs to link
5209 * with -lsecurity or some such.
5210 * This interface is used at least by Solaris, HP-UX, IRIX, and Linux.
5213 * AIX getpwnam() is clever enough to return the encrypted password
5214 * only if the caller (euid?) is root.
5216 * There are at least three other shadow password APIs. Many platforms
5217 * seem to contain more than one interface for accessing the shadow
5218 * password databases, possibly for compatibility reasons.
5219 * The getsp*() is by far he simplest one, the other two interfaces
5220 * are much more complicated, but also very similar to each other.
5225 * struct pr_passwd *getprpw*();
5226 * The password is in
5227 * char getprpw*(...).ufld.fd_encrypt[]
5228 * Mention HAS_GETPRPWNAM here so that Configure probes for it.
5233 * struct es_passwd *getespw*();
5234 * The password is in
5235 * char *(getespw*(...).ufld.fd_encrypt)
5236 * Mention HAS_GETESPWNAM here so that Configure probes for it.
5239 * struct userpw *getuserpw();
5240 * The password is in
5241 * char *(getuserpw(...)).spw_upw_passwd
5242 * (but the de facto standard getpwnam() should work okay)
5244 * Mention I_PROT here so that Configure probes for it.
5246 * In HP-UX for getprpw*() the manual page claims that one should include
5247 * <hpsecurity.h> instead of <sys/security.h>, but that is not needed
5248 * if one includes <shadow.h> as that includes <hpsecurity.h>,
5249 * and pp_sys.c already includes <shadow.h> if there is such.
5251 * Note that <sys/security.h> is already probed for, but currently
5252 * it is only included in special cases.
5254 * In Digital UNIX/Tru64 if using the getespw*() (which seems to be
5255 * be preferred interface, even though also the getprpw*() interface
5256 * is available) one needs to link with -lsecurity -ldb -laud -lm.
5257 * One also needs to call set_auth_parameters() in main() before
5258 * doing anything else, whether one is using getespw*() or getprpw*().
5260 * Note that accessing the shadow databases can be magnitudes
5261 * slower than accessing the standard databases.
5266 # if defined(__CYGWIN__) && defined(USE_REENTRANT_API)
5267 /* Cygwin 1.5.3-1 has buggy getpwnam_r() and getpwuid_r():
5268 * the pw_comment is left uninitialized. */
5269 PL_reentrant_buffer->_pwent_struct.pw_comment = NULL;
5275 const char* const name = POPpbytex;
5276 pwent = getpwnam(name);
5282 pwent = getpwuid(uid);
5286 # ifdef HAS_GETPWENT
5288 #ifdef POSIX_BC /* In some cases pw_passwd has invalid addresses */
5289 if (pwent) pwent = getpwnam(pwent->pw_name);
5292 DIE(aTHX_ PL_no_func, "getpwent");
5298 if (GIMME != G_ARRAY) {
5299 PUSHs(sv = sv_newmortal());
5301 if (which == OP_GPWNAM)
5302 sv_setuid(sv, pwent->pw_uid);
5304 sv_setpv(sv, pwent->pw_name);
5310 mPUSHs(newSVpv(pwent->pw_name, 0));
5314 /* If we have getspnam(), we try to dig up the shadow
5315 * password. If we are underprivileged, the shadow
5316 * interface will set the errno to EACCES or similar,
5317 * and return a null pointer. If this happens, we will
5318 * use the dummy password (usually "*" or "x") from the
5319 * standard password database.
5321 * In theory we could skip the shadow call completely
5322 * if euid != 0 but in practice we cannot know which
5323 * security measures are guarding the shadow databases
5324 * on a random platform.
5326 * Resist the urge to use additional shadow interfaces.
5327 * Divert the urge to writing an extension instead.
5330 /* Some AIX setups falsely(?) detect some getspnam(), which
5331 * has a different API than the Solaris/IRIX one. */
5332 # if defined(HAS_GETSPNAM) && !defined(_AIX)
5335 const struct spwd * const spwent = getspnam(pwent->pw_name);
5336 /* Save and restore errno so that
5337 * underprivileged attempts seem
5338 * to have never made the unsuccessful
5339 * attempt to retrieve the shadow password. */
5341 if (spwent && spwent->sp_pwdp)
5342 sv_setpv(sv, spwent->sp_pwdp);
5346 if (!SvPOK(sv)) /* Use the standard password, then. */
5347 sv_setpv(sv, pwent->pw_passwd);
5350 /* passwd is tainted because user himself can diddle with it.
5351 * admittedly not much and in a very limited way, but nevertheless. */
5354 sv_setuid(PUSHmortal, pwent->pw_uid);
5355 sv_setgid(PUSHmortal, pwent->pw_gid);
5357 /* pw_change, pw_quota, and pw_age are mutually exclusive--
5358 * because of the poor interface of the Perl getpw*(),
5359 * not because there's some standard/convention saying so.
5360 * A better interface would have been to return a hash,
5361 * but we are accursed by our history, alas. --jhi. */
5363 mPUSHi(pwent->pw_change);
5366 mPUSHi(pwent->pw_quota);
5369 mPUSHs(newSVpv(pwent->pw_age, 0));
5371 /* I think that you can never get this compiled, but just in case. */
5372 PUSHs(sv_mortalcopy(&PL_sv_no));
5377 /* pw_class and pw_comment are mutually exclusive--.
5378 * see the above note for pw_change, pw_quota, and pw_age. */
5380 mPUSHs(newSVpv(pwent->pw_class, 0));
5383 mPUSHs(newSVpv(pwent->pw_comment, 0));
5385 /* I think that you can never get this compiled, but just in case. */
5386 PUSHs(sv_mortalcopy(&PL_sv_no));
5391 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_gecos, 0)));
5393 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5395 /* pw_gecos is tainted because user himself can diddle with it. */
5398 mPUSHs(newSVpv(pwent->pw_dir, 0));
5400 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_shell, 0)));
5401 /* pw_shell is tainted because user himself can diddle with it. */
5405 mPUSHi(pwent->pw_expire);
5410 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5415 /* also used for: pp_ggrgid() pp_ggrnam() */
5421 const I32 which = PL_op->op_type;
5422 const struct group *grent;
5424 if (which == OP_GGRNAM) {
5425 const char* const name = POPpbytex;
5426 grent = (const struct group *)getgrnam(name);
5428 else if (which == OP_GGRGID) {
5429 const Gid_t gid = POPi;
5430 grent = (const struct group *)getgrgid(gid);
5434 grent = (struct group *)getgrent();
5436 DIE(aTHX_ PL_no_func, "getgrent");
5440 if (GIMME != G_ARRAY) {
5441 SV * const sv = sv_newmortal();
5445 if (which == OP_GGRNAM)
5446 sv_setgid(sv, grent->gr_gid);
5448 sv_setpv(sv, grent->gr_name);
5454 mPUSHs(newSVpv(grent->gr_name, 0));
5457 mPUSHs(newSVpv(grent->gr_passwd, 0));
5459 PUSHs(sv_mortalcopy(&PL_sv_no));
5462 sv_setgid(PUSHmortal, grent->gr_gid);
5464 #if !(defined(_CRAYMPP) && defined(USE_REENTRANT_API))
5465 /* In UNICOS/mk (_CRAYMPP) the multithreading
5466 * versions (getgrnam_r, getgrgid_r)
5467 * seem to return an illegal pointer
5468 * as the group members list, gr_mem.
5469 * getgrent() doesn't even have a _r version
5470 * but the gr_mem is poisonous anyway.
5471 * So yes, you cannot get the list of group
5472 * members if building multithreaded in UNICOS/mk. */
5473 PUSHs(space_join_names_mortal(grent->gr_mem));
5479 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5489 if (!(tmps = PerlProc_getlogin()))
5491 sv_setpv_mg(TARG, tmps);
5495 DIE(aTHX_ PL_no_func, "getlogin");
5499 /* Miscellaneous. */
5504 dSP; dMARK; dORIGMARK; dTARGET;
5505 I32 items = SP - MARK;
5506 unsigned long a[20];
5511 while (++MARK <= SP) {
5512 if (SvTAINTED(*MARK)) {
5518 TAINT_PROPER("syscall");
5521 /* This probably won't work on machines where sizeof(long) != sizeof(int)
5522 * or where sizeof(long) != sizeof(char*). But such machines will
5523 * not likely have syscall implemented either, so who cares?
5525 while (++MARK <= SP) {
5526 if (SvNIOK(*MARK) || !i)
5527 a[i++] = SvIV(*MARK);
5528 else if (*MARK == &PL_sv_undef)
5531 a[i++] = (unsigned long)SvPV_force_nolen(*MARK);
5537 DIE(aTHX_ "Too many args to syscall");
5539 DIE(aTHX_ "Too few args to syscall");
5541 retval = syscall(a[0]);
5544 retval = syscall(a[0],a[1]);
5547 retval = syscall(a[0],a[1],a[2]);
5550 retval = syscall(a[0],a[1],a[2],a[3]);
5553 retval = syscall(a[0],a[1],a[2],a[3],a[4]);
5556 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5]);
5559 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6]);
5562 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7]);
5569 DIE(aTHX_ PL_no_func, "syscall");
5573 #ifdef FCNTL_EMULATE_FLOCK
5575 /* XXX Emulate flock() with fcntl().
5576 What's really needed is a good file locking module.
5580 fcntl_emulate_flock(int fd, int operation)
5585 switch (operation & ~LOCK_NB) {
5587 flock.l_type = F_RDLCK;
5590 flock.l_type = F_WRLCK;
5593 flock.l_type = F_UNLCK;
5599 flock.l_whence = SEEK_SET;
5600 flock.l_start = flock.l_len = (Off_t)0;
5602 res = fcntl(fd, (operation & LOCK_NB) ? F_SETLK : F_SETLKW, &flock);
5603 if (res == -1 && ((errno == EAGAIN) || (errno == EACCES)))
5604 errno = EWOULDBLOCK;
5608 #endif /* FCNTL_EMULATE_FLOCK */
5610 #ifdef LOCKF_EMULATE_FLOCK
5612 /* XXX Emulate flock() with lockf(). This is just to increase
5613 portability of scripts. The calls are not completely
5614 interchangeable. What's really needed is a good file
5618 /* The lockf() constants might have been defined in <unistd.h>.
5619 Unfortunately, <unistd.h> causes troubles on some mixed
5620 (BSD/POSIX) systems, such as SunOS 4.1.3.
5622 Further, the lockf() constants aren't POSIX, so they might not be
5623 visible if we're compiling with _POSIX_SOURCE defined. Thus, we'll
5624 just stick in the SVID values and be done with it. Sigh.
5628 # define F_ULOCK 0 /* Unlock a previously locked region */
5631 # define F_LOCK 1 /* Lock a region for exclusive use */
5634 # define F_TLOCK 2 /* Test and lock a region for exclusive use */
5637 # define F_TEST 3 /* Test a region for other processes locks */
5641 lockf_emulate_flock(int fd, int operation)
5647 /* flock locks entire file so for lockf we need to do the same */
5648 pos = PerlLIO_lseek(fd, (Off_t)0, SEEK_CUR); /* get pos to restore later */
5649 if (pos > 0) /* is seekable and needs to be repositioned */
5650 if (PerlLIO_lseek(fd, (Off_t)0, SEEK_SET) < 0)
5651 pos = -1; /* seek failed, so don't seek back afterwards */
5654 switch (operation) {
5656 /* LOCK_SH - get a shared lock */
5658 /* LOCK_EX - get an exclusive lock */
5660 i = lockf (fd, F_LOCK, 0);
5663 /* LOCK_SH|LOCK_NB - get a non-blocking shared lock */
5664 case LOCK_SH|LOCK_NB:
5665 /* LOCK_EX|LOCK_NB - get a non-blocking exclusive lock */
5666 case LOCK_EX|LOCK_NB:
5667 i = lockf (fd, F_TLOCK, 0);
5669 if ((errno == EAGAIN) || (errno == EACCES))
5670 errno = EWOULDBLOCK;
5673 /* LOCK_UN - unlock (non-blocking is a no-op) */
5675 case LOCK_UN|LOCK_NB:
5676 i = lockf (fd, F_ULOCK, 0);
5679 /* Default - can't decipher operation */
5686 if (pos > 0) /* need to restore position of the handle */
5687 PerlLIO_lseek(fd, pos, SEEK_SET); /* ignore error here */
5692 #endif /* LOCKF_EMULATE_FLOCK */
5696 * c-indentation-style: bsd
5698 * indent-tabs-mode: nil
5701 * ex: set ts=8 sts=4 sw=4 et: