3 * Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
4 * 2004, 2005, 2006, 2007, 2008 by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
12 * But only a short way ahead its floor and the walls on either side were
13 * cloven by a great fissure, out of which the red glare came, now leaping
14 * up, now dying down into darkness; and all the while far below there was
15 * a rumour and a trouble as of great engines throbbing and labouring.
17 * [p.945 of _The Lord of the Rings_, VI/iii: "Mount Doom"]
20 /* This file contains system pp ("push/pop") functions that
21 * execute the opcodes that make up a perl program. A typical pp function
22 * expects to find its arguments on the stack, and usually pushes its
23 * results onto the stack, hence the 'pp' terminology. Each OP structure
24 * contains a pointer to the relevant pp_foo() function.
26 * By 'system', we mean ops which interact with the OS, such as pp_open().
30 #define PERL_IN_PP_SYS_C
36 /* Shadow password support for solaris - pdo@cs.umd.edu
37 * Not just Solaris: at least HP-UX, IRIX, Linux.
38 * The API is from SysV.
40 * There are at least two more shadow interfaces,
41 * see the comments in pp_gpwent().
45 /* There is a MAXINT coming from <shadow.h> <- <hpsecurity.h> <- <values.h>
46 * and another MAXINT from "perl.h" <- <sys/param.h>. */
53 # include <sys/resource.h>
62 # include <sys/select.h>
66 /* XXX Configure test needed.
67 h_errno might not be a simple 'int', especially for multi-threaded
68 applications, see "extern int errno in perl.h". Creating such
69 a test requires taking into account the differences between
70 compiling multithreaded and singlethreaded ($ccflags et al).
71 HOST_NOT_FOUND is typically defined in <netdb.h>.
73 #if defined(HOST_NOT_FOUND) && !defined(h_errno) && !defined(__CYGWIN__)
82 struct passwd *getpwnam (char *);
83 struct passwd *getpwuid (Uid_t);
88 struct passwd *getpwent (void);
89 #elif defined (VMS) && defined (my_getpwent)
90 struct passwd *Perl_my_getpwent (pTHX);
99 struct group *getgrnam (char *);
100 struct group *getgrgid (Gid_t);
104 struct group *getgrent (void);
110 # if defined(_MSC_VER) || defined(__MINGW32__)
111 # include <sys/utime.h>
118 # ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
121 # define my_chsize PerlLIO_chsize
124 # define my_chsize PerlLIO_chsize
126 I32 my_chsize(int fd, Off_t length);
132 #else /* no flock() */
134 /* fcntl.h might not have been included, even if it exists, because
135 the current Configure only sets I_FCNTL if it's needed to pick up
136 the *_OK constants. Make sure it has been included before testing
137 the fcntl() locking constants. */
138 # if defined(HAS_FCNTL) && !defined(I_FCNTL)
142 # if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
143 # define FLOCK fcntl_emulate_flock
144 # define FCNTL_EMULATE_FLOCK
145 # else /* no flock() or fcntl(F_SETLK,...) */
147 # define FLOCK lockf_emulate_flock
148 # define LOCKF_EMULATE_FLOCK
150 # endif /* no flock() or fcntl(F_SETLK,...) */
153 static int FLOCK (int, int);
156 * These are the flock() constants. Since this sytems doesn't have
157 * flock(), the values of the constants are probably not available.
171 # endif /* emulating flock() */
173 #endif /* no flock() */
176 static const char zero_but_true[ZBTLEN + 1] = "0 but true";
178 #if defined(I_SYS_ACCESS) && !defined(R_OK)
179 # include <sys/access.h>
182 #if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
183 # define FD_CLOEXEC 1 /* NeXT needs this */
189 /* Missing protos on LynxOS */
190 void sethostent(int);
191 void endhostent(void);
193 void endnetent(void);
194 void setprotoent(int);
195 void endprotoent(void);
196 void setservent(int);
197 void endservent(void);
200 #undef PERL_EFF_ACCESS /* EFFective uid/gid ACCESS */
202 /* F_OK unused: if stat() cannot find it... */
204 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
205 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
206 # define PERL_EFF_ACCESS(p,f) (access((p), (f) | EFF_ONLY_OK))
209 #if !defined(PERL_EFF_ACCESS) && defined(HAS_EACCESS)
210 # ifdef I_SYS_SECURITY
211 # include <sys/security.h>
215 # define PERL_EFF_ACCESS(p,f) (eaccess((p), (f), ACC_SELF))
218 # define PERL_EFF_ACCESS(p,f) (eaccess((p), (f)))
222 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESSX) && defined(ACC_SELF)
224 # define PERL_EFF_ACCESS(p,f) (accessx((p), (f), ACC_SELF))
228 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) \
229 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
230 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
233 S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
235 const Uid_t ruid = getuid();
236 const Uid_t euid = geteuid();
237 const Gid_t rgid = getgid();
238 const Gid_t egid = getegid();
241 #if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
242 Perl_croak(aTHX_ "switching effective uid is not implemented");
245 if (setreuid(euid, ruid))
248 if (setresuid(euid, ruid, (Uid_t)-1))
251 /* diag_listed_as: entering effective %s failed */
252 Perl_croak(aTHX_ "entering effective uid failed");
255 #if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
256 Perl_croak(aTHX_ "switching effective gid is not implemented");
259 if (setregid(egid, rgid))
262 if (setresgid(egid, rgid, (Gid_t)-1))
265 /* diag_listed_as: entering effective %s failed */
266 Perl_croak(aTHX_ "entering effective gid failed");
269 res = access(path, mode);
272 if (setreuid(ruid, euid))
275 if (setresuid(ruid, euid, (Uid_t)-1))
278 /* diag_listed_as: leaving effective %s failed */
279 Perl_croak(aTHX_ "leaving effective uid failed");
282 if (setregid(rgid, egid))
285 if (setresgid(rgid, egid, (Gid_t)-1))
288 /* diag_listed_as: leaving effective %s failed */
289 Perl_croak(aTHX_ "leaving effective gid failed");
293 # define PERL_EFF_ACCESS(p,f) (S_emulate_eaccess(aTHX_ (p), (f)))
300 const char * const tmps = POPpconstx;
301 const I32 gimme = GIMME_V;
302 const char *mode = "r";
305 if (PL_op->op_private & OPpOPEN_IN_RAW)
307 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
309 fp = PerlProc_popen(tmps, mode);
311 const char * const type = Perl_PerlIO_context_layers(aTHX_ NULL);
313 PerlIO_apply_layers(aTHX_ fp,mode,type);
315 if (gimme == G_VOID) {
317 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
320 else if (gimme == G_SCALAR) {
321 ENTER_with_name("backtick");
323 PL_rs = &PL_sv_undef;
324 sv_setpvs(TARG, ""); /* note that this preserves previous buffer */
325 while (sv_gets(TARG, fp, SvCUR(TARG)) != NULL)
327 LEAVE_with_name("backtick");
333 SV * const sv = newSV(79);
334 if (sv_gets(sv, fp, 0) == NULL) {
339 if (SvLEN(sv) - SvCUR(sv) > 20) {
340 SvPV_shrink_to_cur(sv);
345 STATUS_NATIVE_CHILD_SET(PerlProc_pclose(fp));
346 TAINT; /* "I believe that this is not gratuitous!" */
349 STATUS_NATIVE_CHILD_SET(-1);
350 if (gimme == G_SCALAR)
362 GV * const gv = (PL_op->op_flags & OPf_SPECIAL) ? NULL : (GV *)POPs;
366 /* make a copy of the pattern if it is gmagical, to ensure that magic
367 * is called once and only once */
368 if (SvGMAGICAL(TOPs)) TOPs = sv_2mortal(newSVsv(TOPs));
370 tryAMAGICunTARGETlist(iter_amg, (PL_op->op_flags & OPf_SPECIAL));
372 if (PL_op->op_flags & OPf_SPECIAL) {
373 /* call Perl-level glob function instead. Stack args are:
375 * and following OPs should be: gv(CORE::GLOBAL::glob), entersub
384 /* Note that we only ever get here if File::Glob fails to load
385 * without at the same time croaking, for some reason, or if
386 * perl was built with PERL_EXTERNAL_GLOB */
388 ENTER_with_name("glob");
393 * The external globbing program may use things we can't control,
394 * so for security reasons we must assume the worst.
397 taint_proper(PL_no_security, "glob");
401 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
404 SAVESPTR(PL_rs); /* This is not permanent, either. */
405 PL_rs = newSVpvs_flags("\000", SVs_TEMP);
408 *SvPVX(PL_rs) = '\n';
412 result = do_readline();
413 LEAVE_with_name("glob");
420 PL_last_in_gv = cGVOP_gv;
421 return do_readline();
431 do_join(TARG, &PL_sv_no, MARK, SP);
435 else if (SP == MARK) {
442 if (SvGMAGICAL(exsv)) exsv = sv_mortalcopy(exsv);
445 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
446 /* well-formed exception supplied */
449 SV * const errsv = ERRSV;
452 if (SvGMAGICAL(errsv)) {
453 exsv = sv_newmortal();
454 sv_setsv_nomg(exsv, errsv);
458 else if (SvPOKp(errsv) ? SvCUR(errsv) : SvNIOKp(errsv)) {
459 exsv = sv_newmortal();
460 sv_setsv_nomg(exsv, errsv);
461 sv_catpvs(exsv, "\t...caught");
464 exsv = newSVpvs_flags("Warning: something's wrong", SVs_TEMP);
467 if (SvROK(exsv) && !PL_warnhook)
468 Perl_warn(aTHX_ "%"SVf, SVfARG(exsv));
480 VMSISH_HUSHED || (PL_curcop->op_private & OPpHUSH_VMSISH);
482 if (SP - MARK != 1) {
484 do_join(TARG, &PL_sv_no, MARK, SP);
492 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
493 /* well-formed exception supplied */
496 SV * const errsv = ERRSV;
500 if (sv_isobject(exsv)) {
501 HV * const stash = SvSTASH(SvRV(exsv));
502 GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
504 SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
505 SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
512 call_sv(MUTABLE_SV(GvCV(gv)),
513 G_SCALAR|G_EVAL|G_KEEPERR);
514 exsv = sv_mortalcopy(*PL_stack_sp--);
518 else if (SvPOK(errsv) && SvCUR(errsv)) {
519 exsv = sv_mortalcopy(errsv);
520 sv_catpvs(exsv, "\t...propagated");
523 exsv = newSVpvs_flags("Died", SVs_TEMP);
532 Perl_tied_method(pTHX_ SV *methname, SV **sp, SV *const sv,
533 const MAGIC *const mg, const U32 flags, U32 argc, ...)
538 PERL_ARGS_ASSERT_TIED_METHOD;
540 /* Ensure that our flag bits do not overlap. */
541 assert((TIED_METHOD_MORTALIZE_NOT_NEEDED & G_WANT) == 0);
542 assert((TIED_METHOD_ARGUMENTS_ON_STACK & G_WANT) == 0);
543 assert((TIED_METHOD_SAY & G_WANT) == 0);
545 PUTBACK; /* sp is at *foot* of args, so this pops args from old stack */
546 PUSHSTACKi(PERLSI_MAGIC);
547 EXTEND(SP, argc+1); /* object + args */
549 PUSHs(SvTIED_obj(sv, mg));
550 if (flags & TIED_METHOD_ARGUMENTS_ON_STACK) {
551 Copy(orig_sp + 2, sp + 1, argc, SV*); /* copy args to new stack */
555 const U32 mortalize_not_needed
556 = flags & TIED_METHOD_MORTALIZE_NOT_NEEDED;
558 va_start(args, argc);
560 SV *const arg = va_arg(args, SV *);
561 if(mortalize_not_needed)
570 ENTER_with_name("call_tied_method");
571 if (flags & TIED_METHOD_SAY) {
572 /* local $\ = "\n" */
573 SAVEGENERICSV(PL_ors_sv);
574 PL_ors_sv = newSVpvs("\n");
576 ret_args = call_sv(methname, (flags & G_WANT)|G_METHOD_NAMED);
581 if (ret_args) { /* copy results back to original stack */
582 EXTEND(sp, ret_args);
583 Copy(orig_sp - ret_args + 1, sp + 1, ret_args, SV*);
587 LEAVE_with_name("call_tied_method");
591 #define tied_method0(a,b,c,d) \
592 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,0)
593 #define tied_method1(a,b,c,d,e) \
594 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,1,e)
595 #define tied_method2(a,b,c,d,e,f) \
596 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,2,e,f)
609 GV * const gv = MUTABLE_GV(*++MARK);
611 if (!isGV(gv) && !(SvTYPE(gv) == SVt_PVLV && isGV_with_GP(gv)))
612 DIE(aTHX_ PL_no_usym, "filehandle");
614 if ((io = GvIOp(gv))) {
616 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
619 Perl_ck_warner_d(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
620 "Opening dirhandle %"HEKf" also as a file",
621 HEKfARG(GvENAME_HEK(gv)));
623 mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
625 /* Method's args are same as ours ... */
626 /* ... except handle is replaced by the object */
627 return Perl_tied_method(aTHX_ SV_CONST(OPEN), mark - 1, MUTABLE_SV(io), mg,
628 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
640 tmps = SvPV_const(sv, len);
641 ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, NULL, MARK+1, (SP-MARK));
644 PUSHi( (I32)PL_forkprocess );
645 else if (PL_forkprocess == 0) /* we are a new child */
656 MAXARG == 0 || (!TOPs && !POPs) ? PL_defoutgv : MUTABLE_GV(POPs);
662 IO * const io = GvIO(gv);
664 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
666 return tied_method0(SV_CONST(CLOSE), SP, MUTABLE_SV(io), mg);
670 PUSHs(boolSV(do_close(gv, TRUE)));
683 GV * const wgv = MUTABLE_GV(POPs);
684 GV * const rgv = MUTABLE_GV(POPs);
686 assert (isGV_with_GP(rgv));
687 assert (isGV_with_GP(wgv));
690 do_close(rgv, FALSE);
694 do_close(wgv, FALSE);
696 if (PerlProc_pipe(fd) < 0)
699 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
700 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
701 IoOFP(rstio) = IoIFP(rstio);
702 IoIFP(wstio) = IoOFP(wstio);
703 IoTYPE(rstio) = IoTYPE_RDONLY;
704 IoTYPE(wstio) = IoTYPE_WRONLY;
706 if (!IoIFP(rstio) || !IoOFP(wstio)) {
708 PerlIO_close(IoIFP(rstio));
710 PerlLIO_close(fd[0]);
712 PerlIO_close(IoOFP(wstio));
714 PerlLIO_close(fd[1]);
717 #if defined(HAS_FCNTL) && defined(F_SETFD)
718 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
719 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
726 DIE(aTHX_ PL_no_func, "pipe");
740 gv = MUTABLE_GV(POPs);
744 && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar)))
746 return tied_method0(SV_CONST(FILENO), SP, MUTABLE_SV(io), mg);
749 if (!io || !(fp = IoIFP(io))) {
750 /* Can't do this because people seem to do things like
751 defined(fileno($foo)) to check whether $foo is a valid fh.
758 PUSHi(PerlIO_fileno(fp));
770 if (MAXARG < 1 || (!TOPs && !POPs)) {
771 anum = PerlLIO_umask(022);
772 /* setting it to 022 between the two calls to umask avoids
773 * to have a window where the umask is set to 0 -- meaning
774 * that another thread could create world-writeable files. */
776 (void)PerlLIO_umask(anum);
779 anum = PerlLIO_umask(POPi);
780 TAINT_PROPER("umask");
783 /* Only DIE if trying to restrict permissions on "user" (self).
784 * Otherwise it's harmless and more useful to just return undef
785 * since 'group' and 'other' concepts probably don't exist here. */
786 if (MAXARG >= 1 && (TOPs||POPs) && (POPi & 0700))
787 DIE(aTHX_ "umask not implemented");
788 XPUSHs(&PL_sv_undef);
807 gv = MUTABLE_GV(POPs);
811 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
813 /* This takes advantage of the implementation of the varargs
814 function, which I don't think that the optimiser will be able to
815 figure out. Although, as it's a static function, in theory it
817 return Perl_tied_method(aTHX_ SV_CONST(BINMODE), SP, MUTABLE_SV(io), mg,
818 G_SCALAR|TIED_METHOD_MORTALIZE_NOT_NEEDED,
819 discp ? 1 : 0, discp);
823 if (!io || !(fp = IoIFP(io))) {
825 SETERRNO(EBADF,RMS_IFI);
832 const char *d = NULL;
835 d = SvPV_const(discp, len);
836 mode = mode_from_discipline(d, len);
837 if (PerlIO_binmode(aTHX_ fp, IoTYPE(io), mode, d)) {
838 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
839 if (!PerlIO_binmode(aTHX_ IoOFP(io), IoTYPE(io), mode, d)) {
860 const I32 markoff = MARK - PL_stack_base;
861 const char *methname;
862 int how = PERL_MAGIC_tied;
866 switch(SvTYPE(varsv)) {
870 methname = "TIEHASH";
871 if (HvLAZYDEL(varsv) && (entry = HvEITER((HV *)varsv))) {
872 HvLAZYDEL_off(varsv);
873 hv_free_ent((HV *)varsv, entry);
875 HvEITER_set(MUTABLE_HV(varsv), 0);
879 methname = "TIEARRAY";
880 if (!AvREAL(varsv)) {
882 Perl_croak(aTHX_ "Cannot tie unreifiable array");
883 av_clear((AV *)varsv);
890 if (isGV_with_GP(varsv) && !SvFAKE(varsv)) {
891 methname = "TIEHANDLE";
892 how = PERL_MAGIC_tiedscalar;
893 /* For tied filehandles, we apply tiedscalar magic to the IO
894 slot of the GP rather than the GV itself. AMS 20010812 */
896 GvIOp(varsv) = newIO();
897 varsv = MUTABLE_SV(GvIOp(varsv));
900 if (SvTYPE(varsv) == SVt_PVLV && LvTYPE(varsv) == 'y') {
901 vivify_defelem(varsv);
902 varsv = LvTARG(varsv);
906 methname = "TIESCALAR";
907 how = PERL_MAGIC_tiedscalar;
911 if (sv_isobject(*MARK)) { /* Calls GET magic. */
912 ENTER_with_name("call_TIE");
913 PUSHSTACKi(PERLSI_MAGIC);
915 EXTEND(SP,(I32)items);
919 call_method(methname, G_SCALAR);
922 /* Can't use call_method here, else this: fileno FOO; tie @a, "FOO"
923 * will attempt to invoke IO::File::TIEARRAY, with (best case) the
924 * wrong error message, and worse case, supreme action at a distance.
925 * (Sorry obfuscation writers. You're not going to be given this one.)
927 stash = gv_stashsv(*MARK, 0);
928 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
929 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
930 methname, SVfARG(SvOK(*MARK) ? *MARK : &PL_sv_no));
932 ENTER_with_name("call_TIE");
933 PUSHSTACKi(PERLSI_MAGIC);
935 EXTEND(SP,(I32)items);
939 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
945 if (sv_isobject(sv)) {
946 sv_unmagic(varsv, how);
947 /* Croak if a self-tie on an aggregate is attempted. */
948 if (varsv == SvRV(sv) &&
949 (SvTYPE(varsv) == SVt_PVAV ||
950 SvTYPE(varsv) == SVt_PVHV))
952 "Self-ties of arrays and hashes are not supported");
953 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
955 LEAVE_with_name("call_TIE");
956 SP = PL_stack_base + markoff;
966 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
967 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
969 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
972 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y' &&
973 !(sv = defelem_target(sv, NULL))) RETPUSHUNDEF;
975 if ((mg = SvTIED_mg(sv, how))) {
976 SV * const obj = SvRV(SvTIED_obj(sv, mg));
978 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
980 if (gv && isGV(gv) && (cv = GvCV(gv))) {
982 PUSHs(SvTIED_obj(MUTABLE_SV(gv), mg));
983 mXPUSHi(SvREFCNT(obj) - 1);
985 ENTER_with_name("call_UNTIE");
986 call_sv(MUTABLE_SV(cv), G_VOID);
987 LEAVE_with_name("call_UNTIE");
990 else if (mg && SvREFCNT(obj) > 1) {
991 Perl_ck_warner(aTHX_ packWARN(WARN_UNTIE),
992 "untie attempted while %"UVuf" inner references still exist",
993 (UV)SvREFCNT(obj) - 1 ) ;
997 sv_unmagic(sv, how) ;
1007 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
1008 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
1010 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
1013 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y' &&
1014 !(sv = defelem_target(sv, NULL))) RETPUSHUNDEF;
1016 if ((mg = SvTIED_mg(sv, how))) {
1017 PUSHs(SvTIED_obj(sv, mg));
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, NeXT, 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");
1246 =for apidoc setdefout
1248 Sets PL_defoutgv, the default file handle for output, to the passed in
1249 typeglob. As PL_defoutgv "owns" a reference on its typeglob, the reference
1250 count of the passed in typeglob is increased by one, and the reference count
1251 of the typeglob that PL_defoutgv points to is decreased by one.
1257 Perl_setdefout(pTHX_ GV *gv)
1260 PERL_ARGS_ASSERT_SETDEFOUT;
1261 SvREFCNT_inc_simple_void_NN(gv);
1262 SvREFCNT_dec(PL_defoutgv);
1270 GV * const newdefout = (PL_op->op_private > 0) ? (MUTABLE_GV(POPs)) : NULL;
1271 GV * egv = GvEGVx(PL_defoutgv);
1276 hv = isGV_with_GP(egv) ? GvSTASH(egv) : NULL;
1277 gvp = hv && HvENAME(hv)
1278 ? (GV**)hv_fetch(hv, GvNAME(egv), HEK_UTF8(GvNAME_HEK(egv)) ? -GvNAMELEN(egv) : GvNAMELEN(egv), FALSE)
1280 if (gvp && *gvp == egv) {
1281 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
1285 mXPUSHs(newRV(MUTABLE_SV(egv)));
1289 if (!GvIO(newdefout))
1290 gv_IOadd(newdefout);
1291 setdefout(newdefout);
1301 MAXARG==0 || (!TOPs && !POPs) ? PL_stdingv : MUTABLE_GV(POPs);
1302 IO *const io = GvIO(gv);
1308 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1310 const U32 gimme = GIMME_V;
1311 Perl_tied_method(aTHX_ SV_CONST(GETC), SP, MUTABLE_SV(io), mg, gimme, 0);
1312 if (gimme == G_SCALAR) {
1314 SvSetMagicSV_nosteal(TARG, TOPs);
1319 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
1320 if (!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
1322 SETERRNO(EBADF,RMS_IFI);
1326 sv_setpvs(TARG, " ");
1327 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
1328 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1329 /* Find out how many bytes the char needs */
1330 Size_t len = UTF8SKIP(SvPVX_const(TARG));
1333 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1334 SvCUR_set(TARG,1+len);
1343 S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
1347 const I32 gimme = GIMME_V;
1349 PERL_ARGS_ASSERT_DOFORM;
1351 if (cv && CvCLONE(cv))
1352 cv = MUTABLE_CV(sv_2mortal(MUTABLE_SV(cv_clone(cv))));
1357 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
1358 PUSHFORMAT(cx, retop);
1359 if (CvDEPTH(cv) >= 2) {
1360 PERL_STACK_OVERFLOW_CHECK();
1361 pad_push(CvPADLIST(cv), CvDEPTH(cv));
1364 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), CvDEPTH(cv));
1366 setdefout(gv); /* locally select filehandle so $% et al work */
1385 gv = MUTABLE_GV(POPs);
1402 tmpsv = sv_newmortal();
1403 gv_efullname4(tmpsv, fgv, NULL, FALSE);
1404 DIE(aTHX_ "Undefined format \"%"SVf"\" called", SVfARG(tmpsv));
1406 IoFLAGS(io) &= ~IOf_DIDTOP;
1407 RETURNOP(doform(cv,gv,PL_op->op_next));
1413 GV * const gv = cxstack[cxstack_ix].blk_format.gv;
1414 IO * const io = GvIOp(gv);
1422 if (!io || !(ofp = IoOFP(io)))
1425 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
1426 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
1428 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1429 PL_formtarget != PL_toptarget)
1433 if (!IoTOP_GV(io)) {
1436 if (!IoTOP_NAME(io)) {
1438 if (!IoFMT_NAME(io))
1439 IoFMT_NAME(io) = savepv(GvNAME(gv));
1440 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%"HEKf"_TOP",
1441 HEKfARG(GvNAME_HEK(gv))));
1442 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
1443 if ((topgv && GvFORM(topgv)) ||
1444 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
1445 IoTOP_NAME(io) = savesvpv(topname);
1447 IoTOP_NAME(io) = savepvs("top");
1449 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
1450 if (!topgv || !GvFORM(topgv)) {
1451 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1454 IoTOP_GV(io) = topgv;
1456 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1457 I32 lines = IoLINES_LEFT(io);
1458 const char *s = SvPVX_const(PL_formtarget);
1459 if (lines <= 0) /* Yow, header didn't even fit!!! */
1461 while (lines-- > 0) {
1462 s = strchr(s, '\n');
1468 const STRLEN save = SvCUR(PL_formtarget);
1469 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
1470 do_print(PL_formtarget, ofp);
1471 SvCUR_set(PL_formtarget, save);
1472 sv_chop(PL_formtarget, s);
1473 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
1476 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
1477 do_print(GvSV(gv_fetchpvs("\f", GV_ADD, SVt_PV)), ofp);
1478 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1480 PL_formtarget = PL_toptarget;
1481 IoFLAGS(io) |= IOf_DIDTOP;
1483 assert(fgv); /* IoTOP_GV(io) should have been set above */
1486 SV * const sv = sv_newmortal();
1487 gv_efullname4(sv, fgv, NULL, FALSE);
1488 DIE(aTHX_ "Undefined top format \"%"SVf"\" called", SVfARG(sv));
1490 return doform(cv, gv, PL_op);
1494 POPBLOCK(cx,PL_curpm);
1495 retop = cx->blk_sub.retop;
1497 SP = newsp; /* ignore retval of formline */
1500 if (!io || !(fp = IoOFP(io))) {
1501 if (io && IoIFP(io))
1502 report_wrongway_fh(gv, '<');
1508 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
1509 Perl_ck_warner(aTHX_ packWARN(WARN_IO), "page overflow");
1511 if (!do_print(PL_formtarget, fp))
1514 FmLINES(PL_formtarget) = 0;
1515 SvCUR_set(PL_formtarget, 0);
1516 *SvEND(PL_formtarget) = '\0';
1517 if (IoFLAGS(io) & IOf_FLUSH)
1518 (void)PerlIO_flush(fp);
1522 PL_formtarget = PL_bodytarget;
1523 PERL_UNUSED_VAR(gimme);
1529 dVAR; dSP; dMARK; dORIGMARK;
1533 = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv;
1534 IO *const io = GvIO(gv);
1536 /* Treat empty list as "" */
1537 if (MARK == SP) XPUSHs(&PL_sv_no);
1540 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1542 if (MARK == ORIGMARK) {
1545 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1548 return Perl_tied_method(aTHX_ SV_CONST(PRINTF), mark - 1, MUTABLE_SV(io),
1550 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1557 SETERRNO(EBADF,RMS_IFI);
1560 else if (!(fp = IoOFP(io))) {
1562 report_wrongway_fh(gv, '<');
1563 else if (ckWARN(WARN_CLOSED))
1565 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
1569 SV *sv = sv_newmortal();
1570 do_sprintf(sv, SP - MARK, MARK + 1);
1571 if (!do_print(sv, fp))
1574 if (IoFLAGS(io) & IOf_FLUSH)
1575 if (PerlIO_flush(fp) == EOF)
1584 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 /* FIXME? do_open should do const */
1601 if (do_open(gv, tmps, len, TRUE, mode, perm, NULL)) {
1602 IoLINES(GvIOp(gv)) = 0;
1606 PUSHs(&PL_sv_undef);
1613 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
1627 bool charstart = FALSE;
1628 STRLEN charskip = 0;
1631 GV * const gv = MUTABLE_GV(*++MARK);
1632 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1633 && gv && (io = GvIO(gv)) )
1635 const MAGIC *const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1637 return Perl_tied_method(aTHX_ SV_CONST(READ), mark - 1, MUTABLE_SV(io), mg,
1638 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1647 sv_setpvs(bufsv, "");
1648 length = SvIVx(*++MARK);
1650 DIE(aTHX_ "Negative length");
1653 offset = SvIVx(*++MARK);
1657 if (!io || !IoIFP(io)) {
1659 SETERRNO(EBADF,RMS_IFI);
1662 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
1663 buffer = SvPVutf8_force(bufsv, blen);
1664 /* UTF-8 may not have been set if they are all low bytes */
1669 buffer = SvPV_force(bufsv, blen);
1670 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
1672 if (DO_UTF8(bufsv)) {
1673 blen = sv_len_utf8_nomg(bufsv);
1682 if (PL_op->op_type == OP_RECV) {
1683 Sock_size_t bufsize;
1684 char namebuf[MAXPATHLEN];
1685 #if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
1686 bufsize = sizeof (struct sockaddr_in);
1688 bufsize = sizeof namebuf;
1690 #ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1694 buffer = SvGROW(bufsv, (STRLEN)(length+1));
1695 /* 'offset' means 'flags' here */
1696 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
1697 (struct sockaddr *)namebuf, &bufsize);
1700 /* MSG_TRUNC can give oversized count; quietly lose it */
1703 SvCUR_set(bufsv, count);
1704 *SvEND(bufsv) = '\0';
1705 (void)SvPOK_only(bufsv);
1709 /* This should not be marked tainted if the fp is marked clean */
1710 if (!(IoFLAGS(io) & IOf_UNTAINT))
1711 SvTAINTED_on(bufsv);
1713 sv_setpvn(TARG, namebuf, bufsize);
1719 if (-offset > (SSize_t)blen)
1720 DIE(aTHX_ "Offset outside string");
1723 if (DO_UTF8(bufsv)) {
1724 /* convert offset-as-chars to offset-as-bytes */
1725 if (offset >= (SSize_t)blen)
1726 offset += SvCUR(bufsv) - blen;
1728 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
1731 orig_size = SvCUR(bufsv);
1732 /* Allocating length + offset + 1 isn't perfect in the case of reading
1733 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1735 (should be 2 * length + offset + 1, or possibly something longer if
1736 PL_encoding is true) */
1737 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
1738 if (offset > 0 && offset > (SSize_t)orig_size) { /* Zero any newly allocated space */
1739 Zero(buffer+orig_size, offset-orig_size, char);
1741 buffer = buffer + offset;
1743 read_target = bufsv;
1745 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1746 concatenate it to the current buffer. */
1748 /* Truncate the existing buffer to the start of where we will be
1750 SvCUR_set(bufsv, offset);
1752 read_target = sv_newmortal();
1753 SvUPGRADE(read_target, SVt_PV);
1754 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1757 if (PL_op->op_type == OP_SYSREAD) {
1758 #ifdef PERL_SOCK_SYSREAD_IS_RECV
1759 if (IoTYPE(io) == IoTYPE_SOCKET) {
1760 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1766 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1772 count = PerlIO_read(IoIFP(io), buffer, length);
1773 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1774 if (count == 0 && PerlIO_error(IoIFP(io)))
1778 if (IoTYPE(io) == IoTYPE_WRONLY)
1779 report_wrongway_fh(gv, '>');
1782 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1783 *SvEND(read_target) = '\0';
1784 (void)SvPOK_only(read_target);
1785 if (fp_utf8 && !IN_BYTES) {
1786 /* Look at utf8 we got back and count the characters */
1787 const char *bend = buffer + count;
1788 while (buffer < bend) {
1790 skip = UTF8SKIP(buffer);
1793 if (buffer - charskip + skip > bend) {
1794 /* partial character - try for rest of it */
1795 length = skip - (bend-buffer);
1796 offset = bend - SvPVX_const(bufsv);
1808 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1809 provided amount read (count) was what was requested (length)
1811 if (got < wanted && count == length) {
1812 length = wanted - got;
1813 offset = bend - SvPVX_const(bufsv);
1816 /* return value is character count */
1820 else if (buffer_utf8) {
1821 /* Let svcatsv upgrade the bytes we read in to utf8.
1822 The buffer is a mortal so will be freed soon. */
1823 sv_catsv_nomg(bufsv, read_target);
1826 /* This should not be marked tainted if the fp is marked clean */
1827 if (!(IoFLAGS(io) & IOf_UNTAINT))
1828 SvTAINTED_on(bufsv);
1840 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
1845 STRLEN orig_blen_bytes;
1846 const int op_type = PL_op->op_type;
1849 GV *const gv = MUTABLE_GV(*++MARK);
1850 IO *const io = GvIO(gv);
1852 if (op_type == OP_SYSWRITE && io) {
1853 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1855 if (MARK == SP - 1) {
1857 mXPUSHi(sv_len(sv));
1861 return Perl_tied_method(aTHX_ SV_CONST(WRITE), mark - 1, MUTABLE_SV(io), mg,
1862 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1872 if (!io || !IoIFP(io) || IoTYPE(io) == IoTYPE_RDONLY) {
1874 if (io && IoIFP(io))
1875 report_wrongway_fh(gv, '<');
1878 SETERRNO(EBADF,RMS_IFI);
1882 /* Do this first to trigger any overloading. */
1883 buffer = SvPV_const(bufsv, blen);
1884 orig_blen_bytes = blen;
1885 doing_utf8 = DO_UTF8(bufsv);
1887 if (PerlIO_isutf8(IoIFP(io))) {
1888 if (!SvUTF8(bufsv)) {
1889 /* We don't modify the original scalar. */
1890 tmpbuf = bytes_to_utf8((const U8*) buffer, &blen);
1891 buffer = (char *) tmpbuf;
1895 else if (doing_utf8) {
1896 STRLEN tmplen = blen;
1897 U8 * const result = bytes_from_utf8((const U8*) buffer, &tmplen, &doing_utf8);
1900 buffer = (char *) tmpbuf;
1904 assert((char *)result == buffer);
1905 Perl_croak(aTHX_ "Wide character in %s", OP_DESC(PL_op));
1910 if (op_type == OP_SEND) {
1911 const int flags = SvIVx(*++MARK);
1914 char * const sockbuf = SvPVx(*++MARK, mlen);
1915 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1916 flags, (struct sockaddr *)sockbuf, mlen);
1920 = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, flags);
1926 Size_t length = 0; /* This length is in characters. */
1932 /* The SV is bytes, and we've had to upgrade it. */
1933 blen_chars = orig_blen_bytes;
1935 /* The SV really is UTF-8. */
1936 /* Don't call sv_len_utf8 on a magical or overloaded
1937 scalar, as we might get back a different result. */
1938 blen_chars = sv_or_pv_len_utf8(bufsv, buffer, blen);
1945 length = blen_chars;
1947 #if Size_t_size > IVSIZE
1948 length = (Size_t)SvNVx(*++MARK);
1950 length = (Size_t)SvIVx(*++MARK);
1952 if ((SSize_t)length < 0) {
1954 DIE(aTHX_ "Negative length");
1959 offset = SvIVx(*++MARK);
1961 if (-offset > (IV)blen_chars) {
1963 DIE(aTHX_ "Offset outside string");
1965 offset += blen_chars;
1966 } else if (offset > (IV)blen_chars) {
1968 DIE(aTHX_ "Offset outside string");
1972 if (length > blen_chars - offset)
1973 length = blen_chars - offset;
1975 /* Here we convert length from characters to bytes. */
1976 if (tmpbuf || SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
1977 /* Either we had to convert the SV, or the SV is magical, or
1978 the SV has overloading, in which case we can't or mustn't
1979 or mustn't call it again. */
1981 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
1982 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1984 /* It's a real UTF-8 SV, and it's not going to change under
1985 us. Take advantage of any cache. */
1987 I32 len_I32 = length;
1989 /* Convert the start and end character positions to bytes.
1990 Remember that the second argument to sv_pos_u2b is relative
1992 sv_pos_u2b(bufsv, &start, &len_I32);
1999 buffer = buffer+offset;
2001 #ifdef PERL_SOCK_SYSWRITE_IS_SEND
2002 if (IoTYPE(io) == IoTYPE_SOCKET) {
2003 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
2009 /* See the note at doio.c:do_print about filesize limits. --jhi */
2010 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
2019 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
2022 #if Size_t_size > IVSIZE
2042 * in Perl 5.12 and later, the additional parameter is a bitmask:
2045 * 2 = eof() <- ARGV magic
2047 * I'll rely on the compiler's trace flow analysis to decide whether to
2048 * actually assign this out here, or punt it into the only block where it is
2049 * used. Doing it out here is DRY on the condition logic.
2054 gv = PL_last_in_gv = MUTABLE_GV(POPs); /* eof(FH) */
2060 if (PL_op->op_flags & OPf_SPECIAL) {
2061 gv = PL_last_in_gv = GvEGVx(PL_argvgv); /* eof() - ARGV magic */
2065 gv = PL_last_in_gv; /* eof */
2073 if ((io = GvIO(gv)) && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) {
2074 return tied_method1(SV_CONST(EOF), SP, MUTABLE_SV(io), mg, newSVuv(which));
2077 if (!MAXARG && (PL_op->op_flags & OPf_SPECIAL)) { /* eof() */
2078 if (io && !IoIFP(io)) {
2079 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
2081 IoFLAGS(io) &= ~IOf_START;
2082 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, NULL);
2084 sv_setpvs(GvSV(gv), "-");
2086 GvSV(gv) = newSVpvs("-");
2087 SvSETMAGIC(GvSV(gv));
2089 else if (!nextargv(gv))
2094 PUSHs(boolSV(do_eof(gv)));
2104 if (MAXARG != 0 && (TOPs || POPs))
2105 PL_last_in_gv = MUTABLE_GV(POPs);
2112 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
2114 return tied_method0(SV_CONST(TELL), SP, MUTABLE_SV(io), mg);
2119 SETERRNO(EBADF,RMS_IFI);
2124 #if LSEEKSIZE > IVSIZE
2125 PUSHn( do_tell(gv) );
2127 PUSHi( do_tell(gv) );
2135 const int whence = POPi;
2136 #if LSEEKSIZE > IVSIZE
2137 const Off_t offset = (Off_t)SvNVx(POPs);
2139 const Off_t offset = (Off_t)SvIVx(POPs);
2142 GV * const gv = PL_last_in_gv = MUTABLE_GV(POPs);
2143 IO *const io = GvIO(gv);
2146 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
2148 #if LSEEKSIZE > IVSIZE
2149 SV *const offset_sv = newSVnv((NV) offset);
2151 SV *const offset_sv = newSViv(offset);
2154 return tied_method2(SV_CONST(SEEK), SP, MUTABLE_SV(io), mg, offset_sv,
2159 if (PL_op->op_type == OP_SEEK)
2160 PUSHs(boolSV(do_seek(gv, offset, whence)));
2162 const Off_t sought = do_sysseek(gv, offset, whence);
2164 PUSHs(&PL_sv_undef);
2166 SV* const sv = sought ?
2167 #if LSEEKSIZE > IVSIZE
2172 : newSVpvn(zero_but_true, ZBTLEN);
2183 /* There seems to be no consensus on the length type of truncate()
2184 * and ftruncate(), both off_t and size_t have supporters. In
2185 * general one would think that when using large files, off_t is
2186 * at least as wide as size_t, so using an off_t should be okay. */
2187 /* XXX Configure probe for the length type of *truncate() needed XXX */
2190 #if Off_t_size > IVSIZE
2195 /* Checking for length < 0 is problematic as the type might or
2196 * might not be signed: if it is not, clever compilers will moan. */
2197 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
2200 SV * const sv = POPs;
2205 if (PL_op->op_flags & OPf_SPECIAL
2206 ? (tmpgv = gv_fetchsv(sv, 0, SVt_PVIO), 1)
2207 : !!(tmpgv = MAYBE_DEREF_GV(sv)) ) {
2214 TAINT_PROPER("truncate");
2215 if (!(fp = IoIFP(io))) {
2221 if (ftruncate(PerlIO_fileno(fp), len) < 0)
2223 if (my_chsize(PerlIO_fileno(fp), len) < 0)
2229 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2230 io = MUTABLE_IO(SvRV(sv)); /* *main::FRED{IO} for example */
2231 goto do_ftruncate_io;
2234 const char * const name = SvPV_nomg_const_nolen(sv);
2235 TAINT_PROPER("truncate");
2237 if (truncate(name, len) < 0)
2241 const int tmpfd = PerlLIO_open(name, O_RDWR);
2246 if (my_chsize(tmpfd, len) < 0)
2248 PerlLIO_close(tmpfd);
2257 SETERRNO(EBADF,RMS_IFI);
2265 SV * const argsv = POPs;
2266 const unsigned int func = POPu;
2268 GV * const gv = MUTABLE_GV(POPs);
2269 IO * const io = GvIOn(gv);
2275 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
2279 if (SvPOK(argsv) || !SvNIOK(argsv)) {
2282 s = SvPV_force(argsv, len);
2283 need = IOCPARM_LEN(func);
2285 s = Sv_Grow(argsv, need + 1);
2286 SvCUR_set(argsv, need);
2289 s[SvCUR(argsv)] = 17; /* a little sanity check here */
2292 retval = SvIV(argsv);
2293 s = INT2PTR(char*,retval); /* ouch */
2296 optype = PL_op->op_type;
2297 TAINT_PROPER(PL_op_desc[optype]);
2299 if (optype == OP_IOCTL)
2301 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
2303 DIE(aTHX_ "ioctl is not implemented");
2307 DIE(aTHX_ "fcntl is not implemented");
2309 #if defined(OS2) && defined(__EMX__)
2310 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
2312 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
2316 #if defined(HAS_IOCTL) || defined(HAS_FCNTL)
2318 if (s[SvCUR(argsv)] != 17)
2319 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
2321 s[SvCUR(argsv)] = 0; /* put our null back */
2322 SvSETMAGIC(argsv); /* Assume it has changed */
2331 PUSHp(zero_but_true, ZBTLEN);
2342 const int argtype = POPi;
2343 GV * const gv = MUTABLE_GV(POPs);
2344 IO *const io = GvIO(gv);
2345 PerlIO *const fp = io ? IoIFP(io) : NULL;
2347 /* XXX Looks to me like io is always NULL at this point */
2349 (void)PerlIO_flush(fp);
2350 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
2355 SETERRNO(EBADF,RMS_IFI);
2360 DIE(aTHX_ PL_no_func, "flock()");
2371 const int protocol = POPi;
2372 const int type = POPi;
2373 const int domain = POPi;
2374 GV * const gv = MUTABLE_GV(POPs);
2375 IO * const io = GvIOn(gv);
2379 do_close(gv, FALSE);
2381 TAINT_PROPER("socket");
2382 fd = PerlSock_socket(domain, type, protocol);
2385 IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2386 IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
2387 IoTYPE(io) = IoTYPE_SOCKET;
2388 if (!IoIFP(io) || !IoOFP(io)) {
2389 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2390 if (IoOFP(io)) PerlIO_close(IoOFP(io));
2391 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
2394 #if defined(HAS_FCNTL) && defined(F_SETFD)
2395 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2404 #if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
2407 const int protocol = POPi;
2408 const int type = POPi;
2409 const int domain = POPi;
2411 GV * const gv2 = MUTABLE_GV(POPs);
2412 IO * const io2 = GvIOn(gv2);
2413 GV * const gv1 = MUTABLE_GV(POPs);
2414 IO * const io1 = GvIOn(gv1);
2417 do_close(gv1, FALSE);
2419 do_close(gv2, FALSE);
2421 TAINT_PROPER("socketpair");
2422 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
2424 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2425 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
2426 IoTYPE(io1) = IoTYPE_SOCKET;
2427 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2428 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
2429 IoTYPE(io2) = IoTYPE_SOCKET;
2430 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
2431 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2432 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
2433 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
2434 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2435 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
2436 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
2439 #if defined(HAS_FCNTL) && defined(F_SETFD)
2440 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2441 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2446 DIE(aTHX_ PL_no_sock_func, "socketpair");
2455 SV * const addrsv = POPs;
2456 /* OK, so on what platform does bind modify addr? */
2458 GV * const gv = MUTABLE_GV(POPs);
2459 IO * const io = GvIOn(gv);
2466 addr = SvPV_const(addrsv, len);
2467 op_type = PL_op->op_type;
2468 TAINT_PROPER(PL_op_desc[op_type]);
2469 if ((op_type == OP_BIND
2470 ? PerlSock_bind(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len)
2471 : PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len))
2479 SETERRNO(EBADF,SS_IVCHAN);
2486 const int backlog = POPi;
2487 GV * const gv = MUTABLE_GV(POPs);
2488 IO * const io = GvIOn(gv);
2493 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
2500 SETERRNO(EBADF,SS_IVCHAN);
2508 char namebuf[MAXPATHLEN];
2509 #if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
2510 Sock_size_t len = sizeof (struct sockaddr_in);
2512 Sock_size_t len = sizeof namebuf;
2514 GV * const ggv = MUTABLE_GV(POPs);
2515 GV * const ngv = MUTABLE_GV(POPs);
2518 IO * const gstio = GvIO(ggv);
2519 if (!gstio || !IoIFP(gstio))
2523 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
2526 /* Some platforms indicate zero length when an AF_UNIX client is
2527 * not bound. Simulate a non-zero-length sockaddr structure in
2529 namebuf[0] = 0; /* sun_len */
2530 namebuf[1] = AF_UNIX; /* sun_family */
2538 do_close(ngv, FALSE);
2539 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2540 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
2541 IoTYPE(nstio) = IoTYPE_SOCKET;
2542 if (!IoIFP(nstio) || !IoOFP(nstio)) {
2543 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2544 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
2545 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
2548 #if defined(HAS_FCNTL) && defined(F_SETFD)
2549 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2552 #ifdef __SCO_VERSION__
2553 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
2556 PUSHp(namebuf, len);
2560 report_evil_fh(ggv);
2561 SETERRNO(EBADF,SS_IVCHAN);
2571 const int how = POPi;
2572 GV * const gv = MUTABLE_GV(POPs);
2573 IO * const io = GvIOn(gv);
2578 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
2583 SETERRNO(EBADF,SS_IVCHAN);
2590 const int optype = PL_op->op_type;
2591 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
2592 const unsigned int optname = (unsigned int) POPi;
2593 const unsigned int lvl = (unsigned int) POPi;
2594 GV * const gv = MUTABLE_GV(POPs);
2595 IO * const io = GvIOn(gv);
2602 fd = PerlIO_fileno(IoIFP(io));
2606 (void)SvPOK_only(sv);
2610 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
2617 #if defined(__SYMBIAN32__)
2618 # define SETSOCKOPT_OPTION_VALUE_T void *
2620 # define SETSOCKOPT_OPTION_VALUE_T const char *
2622 /* XXX TODO: We need to have a proper type (a Configure probe,
2623 * etc.) for what the C headers think of the third argument of
2624 * setsockopt(), the option_value read-only buffer: is it
2625 * a "char *", or a "void *", const or not. Some compilers
2626 * don't take kindly to e.g. assuming that "char *" implicitly
2627 * promotes to a "void *", or to explicitly promoting/demoting
2628 * consts to non/vice versa. The "const void *" is the SUS
2629 * definition, but that does not fly everywhere for the above
2631 SETSOCKOPT_OPTION_VALUE_T buf;
2635 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2639 aint = (int)SvIV(sv);
2640 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
2643 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
2653 SETERRNO(EBADF,SS_IVCHAN);
2662 const int optype = PL_op->op_type;
2663 GV * const gv = MUTABLE_GV(POPs);
2664 IO * const io = GvIOn(gv);
2672 sv = sv_2mortal(newSV(257));
2673 (void)SvPOK_only(sv);
2677 fd = PerlIO_fileno(IoIFP(io));
2679 case OP_GETSOCKNAME:
2680 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2683 case OP_GETPEERNAME:
2684 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2686 #if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2688 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";
2689 /* If the call succeeded, make sure we don't have a zeroed port/addr */
2690 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2691 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
2692 sizeof(u_short) + sizeof(struct in_addr))) {
2699 #ifdef BOGUS_GETNAME_RETURN
2700 /* Interactive Unix, getpeername() and getsockname()
2701 does not return valid namelen */
2702 if (len == BOGUS_GETNAME_RETURN)
2703 len = sizeof(struct sockaddr);
2712 SETERRNO(EBADF,SS_IVCHAN);
2731 if (PL_op->op_flags & OPf_REF ? (gv = cGVOP_gv, 1)
2732 : !!(sv=POPs, gv = MAYBE_DEREF_GV(sv))) {
2733 if (PL_op->op_type == OP_LSTAT) {
2734 if (gv != PL_defgv) {
2735 do_fstat_warning_check:
2736 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
2737 "lstat() on filehandle%s%"SVf,
2740 ? sv_2mortal(newSVhek(GvENAME_HEK(gv)))
2742 } else if (PL_laststype != OP_LSTAT)
2743 /* diag_listed_as: The stat preceding %s wasn't an lstat */
2744 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
2747 if (gv != PL_defgv) {
2751 PL_laststype = OP_STAT;
2752 PL_statgv = gv ? gv : (GV *)io;
2753 sv_setpvs(PL_statname, "");
2760 PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
2762 } else if (IoDIRP(io)) {
2764 PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache);
2767 PL_laststatval = -1;
2770 else PL_laststatval = -1;
2771 if (PL_laststatval < 0 && !havefp) report_evil_fh(gv);
2774 if (PL_laststatval < 0) {
2779 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2780 io = MUTABLE_IO(SvRV(sv));
2781 if (PL_op->op_type == OP_LSTAT)
2782 goto do_fstat_warning_check;
2783 goto do_fstat_have_io;
2786 SvTAINTED_off(PL_statname); /* previous tainting irrelevant */
2787 sv_setpv(PL_statname, SvPV_nomg_const_nolen(sv));
2789 PL_laststype = PL_op->op_type;
2790 if (PL_op->op_type == OP_LSTAT)
2791 PL_laststatval = PerlLIO_lstat(SvPV_nolen_const(PL_statname), &PL_statcache);
2793 PL_laststatval = PerlLIO_stat(SvPV_nolen_const(PL_statname), &PL_statcache);
2794 if (PL_laststatval < 0) {
2795 if (ckWARN(WARN_NEWLINE) &&
2796 strchr(SvPV_nolen_const(PL_statname), '\n'))
2798 /* PL_warn_nl is constant */
2799 GCC_DIAG_IGNORE(-Wformat-nonliteral);
2800 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
2808 if (gimme != G_ARRAY) {
2809 if (gimme != G_VOID)
2810 XPUSHs(boolSV(max));
2816 mPUSHi(PL_statcache.st_dev);
2817 #if ST_INO_SIZE > IVSIZE
2818 mPUSHn(PL_statcache.st_ino);
2820 # if ST_INO_SIGN <= 0
2821 mPUSHi(PL_statcache.st_ino);
2823 mPUSHu(PL_statcache.st_ino);
2826 mPUSHu(PL_statcache.st_mode);
2827 mPUSHu(PL_statcache.st_nlink);
2829 sv_setuid(PUSHmortal, PL_statcache.st_uid);
2830 sv_setgid(PUSHmortal, PL_statcache.st_gid);
2832 #ifdef USE_STAT_RDEV
2833 mPUSHi(PL_statcache.st_rdev);
2835 PUSHs(newSVpvs_flags("", SVs_TEMP));
2837 #if Off_t_size > IVSIZE
2838 mPUSHn(PL_statcache.st_size);
2840 mPUSHi(PL_statcache.st_size);
2843 mPUSHn(PL_statcache.st_atime);
2844 mPUSHn(PL_statcache.st_mtime);
2845 mPUSHn(PL_statcache.st_ctime);
2847 mPUSHi(PL_statcache.st_atime);
2848 mPUSHi(PL_statcache.st_mtime);
2849 mPUSHi(PL_statcache.st_ctime);
2851 #ifdef USE_STAT_BLOCKS
2852 mPUSHu(PL_statcache.st_blksize);
2853 mPUSHu(PL_statcache.st_blocks);
2855 PUSHs(newSVpvs_flags("", SVs_TEMP));
2856 PUSHs(newSVpvs_flags("", SVs_TEMP));
2862 /* All filetest ops avoid manipulating the perl stack pointer in their main
2863 bodies (since commit d2c4d2d1e22d3125), and return using either
2864 S_ft_return_false() or S_ft_return_true(). These two helper functions are
2865 the only two which manipulate the perl stack. To ensure that no stack
2866 manipulation macros are used, the filetest ops avoid defining a local copy
2867 of the stack pointer with dSP. */
2869 /* If the next filetest is stacked up with this one
2870 (PL_op->op_private & OPpFT_STACKING), we leave
2871 the original argument on the stack for success,
2872 and skip the stacked operators on failure.
2873 The next few macros/functions take care of this.
2877 S_ft_return_false(pTHX_ SV *ret) {
2881 if (PL_op->op_flags & OPf_REF) XPUSHs(ret);
2885 if (PL_op->op_private & OPpFT_STACKING) {
2886 while (OP_IS_FILETEST(next->op_type)
2887 && next->op_private & OPpFT_STACKED)
2888 next = next->op_next;
2893 PERL_STATIC_INLINE OP *
2894 S_ft_return_true(pTHX_ SV *ret) {
2896 if (PL_op->op_flags & OPf_REF)
2897 XPUSHs(PL_op->op_private & OPpFT_STACKING ? (SV *)cGVOP_gv : (ret));
2898 else if (!(PL_op->op_private & OPpFT_STACKING))
2904 #define FT_RETURNNO return S_ft_return_false(aTHX_ &PL_sv_no)
2905 #define FT_RETURNUNDEF return S_ft_return_false(aTHX_ &PL_sv_undef)
2906 #define FT_RETURNYES return S_ft_return_true(aTHX_ &PL_sv_yes)
2908 #define tryAMAGICftest_MG(chr) STMT_START { \
2909 if ( (SvFLAGS(*PL_stack_sp) & (SVf_ROK|SVs_GMG)) \
2910 && PL_op->op_flags & OPf_KIDS) { \
2911 OP *next = S_try_amagic_ftest(aTHX_ chr); \
2912 if (next) return next; \
2917 S_try_amagic_ftest(pTHX_ char chr) {
2919 SV *const arg = *PL_stack_sp;
2922 if (!(PL_op->op_private & OPpFT_STACKING)) SvGETMAGIC(arg);
2926 const char tmpchr = chr;
2927 SV * const tmpsv = amagic_call(arg,
2928 newSVpvn_flags(&tmpchr, 1, SVs_TEMP),
2929 ftest_amg, AMGf_unary);
2934 return SvTRUE(tmpsv)
2935 ? S_ft_return_true(aTHX_ tmpsv) : S_ft_return_false(aTHX_ tmpsv);
2945 /* Not const, because things tweak this below. Not bool, because there's
2946 no guarantee that OPp_FT_ACCESS is <= CHAR_MAX */
2947 #if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2948 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
2949 /* Giving some sort of initial value silences compilers. */
2951 int access_mode = R_OK;
2953 int access_mode = 0;
2956 /* access_mode is never used, but leaving use_access in makes the
2957 conditional compiling below much clearer. */
2960 Mode_t stat_mode = S_IRUSR;
2962 bool effective = FALSE;
2965 switch (PL_op->op_type) {
2966 case OP_FTRREAD: opchar = 'R'; break;
2967 case OP_FTRWRITE: opchar = 'W'; break;
2968 case OP_FTREXEC: opchar = 'X'; break;
2969 case OP_FTEREAD: opchar = 'r'; break;
2970 case OP_FTEWRITE: opchar = 'w'; break;
2971 case OP_FTEEXEC: opchar = 'x'; break;
2973 tryAMAGICftest_MG(opchar);
2975 switch (PL_op->op_type) {
2977 #if !(defined(HAS_ACCESS) && defined(R_OK))
2983 #if defined(HAS_ACCESS) && defined(W_OK)
2988 stat_mode = S_IWUSR;
2992 #if defined(HAS_ACCESS) && defined(X_OK)
2997 stat_mode = S_IXUSR;
3001 #ifdef PERL_EFF_ACCESS
3004 stat_mode = S_IWUSR;
3008 #ifndef PERL_EFF_ACCESS
3015 #ifdef PERL_EFF_ACCESS
3020 stat_mode = S_IXUSR;
3026 #if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
3027 const char *name = SvPV_nolen(*PL_stack_sp);
3029 # ifdef PERL_EFF_ACCESS
3030 result = PERL_EFF_ACCESS(name, access_mode);
3032 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
3038 result = access(name, access_mode);
3040 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
3051 result = my_stat_flags(0);
3054 if (cando(stat_mode, effective, &PL_statcache))
3063 const int op_type = PL_op->op_type;
3067 case OP_FTIS: opchar = 'e'; break;
3068 case OP_FTSIZE: opchar = 's'; break;
3069 case OP_FTMTIME: opchar = 'M'; break;
3070 case OP_FTCTIME: opchar = 'C'; break;
3071 case OP_FTATIME: opchar = 'A'; break;
3073 tryAMAGICftest_MG(opchar);
3075 result = my_stat_flags(0);
3078 if (op_type == OP_FTIS)
3081 /* You can't dTARGET inside OP_FTIS, because you'll get
3082 "panic: pad_sv po" - the op is not flagged to have a target. */
3086 #if Off_t_size > IVSIZE
3087 sv_setnv(TARG, (NV)PL_statcache.st_size);
3089 sv_setiv(TARG, (IV)PL_statcache.st_size);
3094 ((NV)PL_basetime - PL_statcache.st_mtime) / 86400.0 );
3098 ((NV)PL_basetime - PL_statcache.st_atime) / 86400.0 );
3102 ((NV)PL_basetime - PL_statcache.st_ctime) / 86400.0 );
3106 return SvTRUE_nomg(TARG)
3107 ? S_ft_return_true(aTHX_ TARG) : S_ft_return_false(aTHX_ TARG);
3117 switch (PL_op->op_type) {
3118 case OP_FTROWNED: opchar = 'O'; break;
3119 case OP_FTEOWNED: opchar = 'o'; break;
3120 case OP_FTZERO: opchar = 'z'; break;
3121 case OP_FTSOCK: opchar = 'S'; break;
3122 case OP_FTCHR: opchar = 'c'; break;
3123 case OP_FTBLK: opchar = 'b'; break;
3124 case OP_FTFILE: opchar = 'f'; break;
3125 case OP_FTDIR: opchar = 'd'; break;
3126 case OP_FTPIPE: opchar = 'p'; break;
3127 case OP_FTSUID: opchar = 'u'; break;
3128 case OP_FTSGID: opchar = 'g'; break;
3129 case OP_FTSVTX: opchar = 'k'; break;
3131 tryAMAGICftest_MG(opchar);
3133 /* I believe that all these three are likely to be defined on most every
3134 system these days. */
3136 if(PL_op->op_type == OP_FTSUID) {
3141 if(PL_op->op_type == OP_FTSGID) {
3146 if(PL_op->op_type == OP_FTSVTX) {
3151 result = my_stat_flags(0);
3154 switch (PL_op->op_type) {
3156 if (PL_statcache.st_uid == PerlProc_getuid())
3160 if (PL_statcache.st_uid == PerlProc_geteuid())
3164 if (PL_statcache.st_size == 0)
3168 if (S_ISSOCK(PL_statcache.st_mode))
3172 if (S_ISCHR(PL_statcache.st_mode))
3176 if (S_ISBLK(PL_statcache.st_mode))
3180 if (S_ISREG(PL_statcache.st_mode))
3184 if (S_ISDIR(PL_statcache.st_mode))
3188 if (S_ISFIFO(PL_statcache.st_mode))
3193 if (PL_statcache.st_mode & S_ISUID)
3199 if (PL_statcache.st_mode & S_ISGID)
3205 if (PL_statcache.st_mode & S_ISVTX)
3218 tryAMAGICftest_MG('l');
3219 result = my_lstat_flags(0);
3223 if (S_ISLNK(PL_statcache.st_mode))
3236 tryAMAGICftest_MG('t');
3238 if (PL_op->op_flags & OPf_REF)
3241 SV *tmpsv = *PL_stack_sp;
3242 if (!(gv = MAYBE_DEREF_GV_nomg(tmpsv))) {
3243 name = SvPV_nomg(tmpsv, namelen);
3244 gv = gv_fetchpvn_flags(name, namelen, SvUTF8(tmpsv), SVt_PVIO);
3248 if (GvIO(gv) && IoIFP(GvIOp(gv)))
3249 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
3250 else if (name && isDIGIT(*name))
3254 if (PerlLIO_isatty(fd))
3272 tryAMAGICftest_MG(PL_op->op_type == OP_FTTEXT ? 'T' : 'B');
3274 if (PL_op->op_flags & OPf_REF)
3276 else if ((PL_op->op_private & (OPpFT_STACKED|OPpFT_AFTER_t))
3281 gv = MAYBE_DEREF_GV_nomg(sv);
3285 if (gv == PL_defgv) {
3287 io = SvTYPE(PL_statgv) == SVt_PVIO
3291 goto really_filename;
3296 sv_setpvs(PL_statname, "");
3297 io = GvIO(PL_statgv);
3299 PL_laststatval = -1;
3300 PL_laststype = OP_STAT;
3301 if (io && IoIFP(io)) {
3302 if (! PerlIO_has_base(IoIFP(io)))
3303 DIE(aTHX_ "-T and -B not implemented on filehandles");
3304 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3305 if (PL_laststatval < 0)
3307 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
3308 if (PL_op->op_type == OP_FTTEXT)
3313 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
3314 i = PerlIO_getc(IoIFP(io));
3316 (void)PerlIO_ungetc(IoIFP(io),i);
3318 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
3320 len = PerlIO_get_bufsiz(IoIFP(io));
3321 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
3322 /* sfio can have large buffers - limit to 512 */
3327 SETERRNO(EBADF,RMS_IFI);
3329 SETERRNO(EBADF,RMS_IFI);
3334 sv_setpv(PL_statname, SvPV_nomg_const_nolen(sv));
3337 if (!(fp = PerlIO_open(SvPVX_const(PL_statname), "r"))) {
3339 PL_laststatval = -1;
3340 PL_laststype = OP_STAT;
3342 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname),
3345 /* PL_warn_nl is constant */
3346 GCC_DIAG_IGNORE(-Wformat-nonliteral);
3347 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
3352 PL_laststype = OP_STAT;
3353 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(fp), &PL_statcache);
3354 if (PL_laststatval < 0) {
3355 (void)PerlIO_close(fp);
3358 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, NULL);
3359 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3360 (void)PerlIO_close(fp);
3362 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
3363 FT_RETURNNO; /* special case NFS directories */
3364 FT_RETURNYES; /* null file is anything */
3369 /* now scan s to look for textiness */
3370 /* XXX ASCII dependent code */
3372 #if defined(DOSISH) || defined(USEMYBINMODE)
3373 /* ignore trailing ^Z on short files */
3374 if (len && len < (I32)sizeof(tbuf) && tbuf[len-1] == 26)
3378 for (i = 0; i < len; i++, s++) {
3379 if (!*s) { /* null never allowed in text */
3384 else if (!(isPRINT(*s) || isSPACE(*s)))
3387 else if (*s & 128) {
3389 if (IN_LOCALE_RUNTIME && isALPHA_LC(*s))
3392 /* utf8 characters don't count as odd */
3393 if (UTF8_IS_START(*s)) {
3394 int ulen = UTF8SKIP(s);
3395 if (ulen < len - i) {
3397 for (j = 1; j < ulen; j++) {
3398 if (!UTF8_IS_CONTINUATION(s[j]))
3401 --ulen; /* loop does extra increment */
3411 *s != '\n' && *s != '\r' && *s != '\b' &&
3412 *s != '\t' && *s != '\f' && *s != 27)
3417 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
3428 const char *tmps = NULL;
3432 SV * const sv = POPs;
3433 if (PL_op->op_flags & OPf_SPECIAL) {
3434 gv = gv_fetchsv(sv, 0, SVt_PVIO);
3436 else if (!(gv = MAYBE_DEREF_GV(sv)))
3437 tmps = SvPV_nomg_const_nolen(sv);
3440 if( !gv && (!tmps || !*tmps) ) {
3441 HV * const table = GvHVn(PL_envgv);
3444 if ( (svp = hv_fetchs(table, "HOME", FALSE))
3445 || (svp = hv_fetchs(table, "LOGDIR", FALSE))
3447 || (svp = hv_fetchs(table, "SYS$LOGIN", FALSE))
3452 deprecate("chdir('') or chdir(undef) as chdir()");
3453 tmps = SvPV_nolen_const(*svp);
3457 TAINT_PROPER("chdir");
3462 TAINT_PROPER("chdir");
3465 IO* const io = GvIO(gv);
3468 PUSHi(fchdir(my_dirfd(IoDIRP(io))) >= 0);
3469 } else if (IoIFP(io)) {
3470 PUSHi(fchdir(PerlIO_fileno(IoIFP(io))) >= 0);
3474 SETERRNO(EBADF, RMS_IFI);
3480 SETERRNO(EBADF,RMS_IFI);
3484 DIE(aTHX_ PL_no_func, "fchdir");
3488 PUSHi( PerlDir_chdir(tmps) >= 0 );
3490 /* Clear the DEFAULT element of ENV so we'll get the new value
3492 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
3499 dVAR; dSP; dMARK; dTARGET;
3500 const I32 value = (I32)apply(PL_op->op_type, MARK, SP);
3511 char * const tmps = POPpx;
3512 TAINT_PROPER("chroot");
3513 PUSHi( chroot(tmps) >= 0 );
3516 DIE(aTHX_ PL_no_func, "chroot");
3524 const char * const tmps2 = POPpconstx;
3525 const char * const tmps = SvPV_nolen_const(TOPs);
3526 TAINT_PROPER("rename");
3528 anum = PerlLIO_rename(tmps, tmps2);
3530 if (!(anum = PerlLIO_stat(tmps, &PL_statbuf))) {
3531 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3534 if (PerlProc_geteuid() || PerlLIO_stat(tmps2, &PL_statbuf) < 0 || !S_ISDIR(PL_statbuf.st_mode))
3535 (void)UNLINK(tmps2);
3536 if (!(anum = link(tmps, tmps2)))
3537 anum = UNLINK(tmps);
3545 #if defined(HAS_LINK) || defined(HAS_SYMLINK)
3549 const int op_type = PL_op->op_type;
3553 if (op_type == OP_LINK)
3554 DIE(aTHX_ PL_no_func, "link");
3556 # ifndef HAS_SYMLINK
3557 if (op_type == OP_SYMLINK)
3558 DIE(aTHX_ PL_no_func, "symlink");
3562 const char * const tmps2 = POPpconstx;
3563 const char * const tmps = SvPV_nolen_const(TOPs);
3564 TAINT_PROPER(PL_op_desc[op_type]);
3566 # if defined(HAS_LINK)
3567 # if defined(HAS_SYMLINK)
3568 /* Both present - need to choose which. */
3569 (op_type == OP_LINK) ?
3570 PerlLIO_link(tmps, tmps2) : symlink(tmps, tmps2);
3572 /* Only have link, so calls to pp_symlink will have DIE()d above. */
3573 PerlLIO_link(tmps, tmps2);
3576 # if defined(HAS_SYMLINK)
3577 /* Only have symlink, so calls to pp_link will have DIE()d above. */
3578 symlink(tmps, tmps2);
3583 SETi( result >= 0 );
3590 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
3601 char buf[MAXPATHLEN];
3606 len = readlink(tmps, buf, sizeof(buf) - 1);
3613 RETSETUNDEF; /* just pretend it's a normal file */
3617 #if !defined(HAS_MKDIR) || !defined(HAS_RMDIR)
3619 S_dooneliner(pTHX_ const char *cmd, const char *filename)
3621 char * const save_filename = filename;
3626 Size_t size = strlen(cmd) + (strlen(filename) * 2) + 10;
3628 PERL_ARGS_ASSERT_DOONELINER;
3630 Newx(cmdline, size, char);
3631 my_strlcpy(cmdline, cmd, size);
3632 my_strlcat(cmdline, " ", size);
3633 for (s = cmdline + strlen(cmdline); *filename; ) {
3637 if (s - cmdline < size)
3638 my_strlcpy(s, " 2>&1", size - (s - cmdline));
3639 myfp = PerlProc_popen(cmdline, "r");
3643 SV * const tmpsv = sv_newmortal();
3644 /* Need to save/restore 'PL_rs' ?? */
3645 s = sv_gets(tmpsv, myfp, 0);
3646 (void)PerlProc_pclose(myfp);
3650 #ifdef HAS_SYS_ERRLIST
3655 /* you don't see this */
3656 const char * const errmsg = Strerror(e) ;
3659 if (instr(s, errmsg)) {
3666 #define EACCES EPERM
3668 if (instr(s, "cannot make"))
3669 SETERRNO(EEXIST,RMS_FEX);
3670 else if (instr(s, "existing file"))
3671 SETERRNO(EEXIST,RMS_FEX);
3672 else if (instr(s, "ile exists"))
3673 SETERRNO(EEXIST,RMS_FEX);
3674 else if (instr(s, "non-exist"))
3675 SETERRNO(ENOENT,RMS_FNF);
3676 else if (instr(s, "does not exist"))
3677 SETERRNO(ENOENT,RMS_FNF);
3678 else if (instr(s, "not empty"))
3679 SETERRNO(EBUSY,SS_DEVOFFLINE);
3680 else if (instr(s, "cannot access"))
3681 SETERRNO(EACCES,RMS_PRV);
3683 SETERRNO(EPERM,RMS_PRV);
3686 else { /* some mkdirs return no failure indication */
3687 anum = (PerlLIO_stat(save_filename, &PL_statbuf) >= 0);
3688 if (PL_op->op_type == OP_RMDIR)
3693 SETERRNO(EACCES,RMS_PRV); /* a guess */
3702 /* This macro removes trailing slashes from a directory name.
3703 * Different operating and file systems take differently to
3704 * trailing slashes. According to POSIX 1003.1 1996 Edition
3705 * any number of trailing slashes should be allowed.
3706 * Thusly we snip them away so that even non-conforming
3707 * systems are happy.
3708 * We should probably do this "filtering" for all
3709 * the functions that expect (potentially) directory names:
3710 * -d, chdir(), chmod(), chown(), chroot(), fcntl()?,
3711 * (mkdir()), opendir(), rename(), rmdir(), stat(). --jhi */
3713 #define TRIMSLASHES(tmps,len,copy) (tmps) = SvPV_const(TOPs, (len)); \
3714 if ((len) > 1 && (tmps)[(len)-1] == '/') { \
3717 } while ((len) > 1 && (tmps)[(len)-1] == '/'); \
3718 (tmps) = savepvn((tmps), (len)); \
3728 const int mode = (MAXARG > 1 && (TOPs||((void)POPs,0))) ? POPi : 0777;
3730 TRIMSLASHES(tmps,len,copy);
3732 TAINT_PROPER("mkdir");
3734 SETi( PerlDir_mkdir(tmps, mode) >= 0 );
3738 SETi( dooneliner("mkdir", tmps) );
3739 oldumask = PerlLIO_umask(0);
3740 PerlLIO_umask(oldumask);
3741 PerlLIO_chmod(tmps, (mode & ~oldumask) & 0777);
3756 TRIMSLASHES(tmps,len,copy);
3757 TAINT_PROPER("rmdir");
3759 SETi( PerlDir_rmdir(tmps) >= 0 );
3761 SETi( dooneliner("rmdir", tmps) );
3768 /* Directory calls. */
3772 #if defined(Direntry_t) && defined(HAS_READDIR)
3774 const char * const dirname = POPpconstx;
3775 GV * const gv = MUTABLE_GV(POPs);
3776 IO * const io = GvIOn(gv);
3778 if ((IoIFP(io) || IoOFP(io)))
3779 Perl_ck_warner_d(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
3780 "Opening filehandle %"HEKf" also as a directory",
3781 HEKfARG(GvENAME_HEK(gv)) );
3783 PerlDir_close(IoDIRP(io));
3784 if (!(IoDIRP(io) = PerlDir_open(dirname)))
3790 SETERRNO(EBADF,RMS_DIR);
3793 DIE(aTHX_ PL_no_dir_func, "opendir");
3799 #if !defined(Direntry_t) || !defined(HAS_READDIR)
3800 DIE(aTHX_ PL_no_dir_func, "readdir");
3802 #if !defined(I_DIRENT) && !defined(VMS)
3803 Direntry_t *readdir (DIR *);
3809 const I32 gimme = GIMME;
3810 GV * const gv = MUTABLE_GV(POPs);
3811 const Direntry_t *dp;
3812 IO * const io = GvIOn(gv);
3815 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
3816 "readdir() attempted on invalid dirhandle %"HEKf,
3817 HEKfARG(GvENAME_HEK(gv)));
3822 dp = (Direntry_t *)PerlDir_read(IoDIRP(io));
3826 sv = newSVpvn(dp->d_name, dp->d_namlen);
3828 sv = newSVpv(dp->d_name, 0);
3830 if (!(IoFLAGS(io) & IOf_UNTAINT))
3833 } while (gimme == G_ARRAY);
3835 if (!dp && gimme != G_ARRAY)
3842 SETERRNO(EBADF,RMS_ISI);
3843 if (GIMME == G_ARRAY)
3852 #if defined(HAS_TELLDIR) || defined(telldir)
3854 /* XXX does _anyone_ need this? --AD 2/20/1998 */
3855 /* XXX netbsd still seemed to.
3856 XXX HAS_TELLDIR_PROTO is new style, NEED_TELLDIR_PROTO is old style.
3857 --JHI 1999-Feb-02 */
3858 # if !defined(HAS_TELLDIR_PROTO) || defined(NEED_TELLDIR_PROTO)
3859 long telldir (DIR *);
3861 GV * const gv = MUTABLE_GV(POPs);
3862 IO * const io = GvIOn(gv);
3865 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
3866 "telldir() attempted on invalid dirhandle %"HEKf,
3867 HEKfARG(GvENAME_HEK(gv)));
3871 PUSHi( PerlDir_tell(IoDIRP(io)) );
3875 SETERRNO(EBADF,RMS_ISI);
3878 DIE(aTHX_ PL_no_dir_func, "telldir");
3884 #if defined(HAS_SEEKDIR) || defined(seekdir)
3886 const long along = POPl;
3887 GV * const gv = MUTABLE_GV(POPs);
3888 IO * const io = GvIOn(gv);
3891 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
3892 "seekdir() attempted on invalid dirhandle %"HEKf,
3893 HEKfARG(GvENAME_HEK(gv)));
3896 (void)PerlDir_seek(IoDIRP(io), along);
3901 SETERRNO(EBADF,RMS_ISI);
3904 DIE(aTHX_ PL_no_dir_func, "seekdir");
3910 #if defined(HAS_REWINDDIR) || defined(rewinddir)
3912 GV * const gv = MUTABLE_GV(POPs);
3913 IO * const io = GvIOn(gv);
3916 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
3917 "rewinddir() attempted on invalid dirhandle %"HEKf,
3918 HEKfARG(GvENAME_HEK(gv)));
3921 (void)PerlDir_rewind(IoDIRP(io));
3925 SETERRNO(EBADF,RMS_ISI);
3928 DIE(aTHX_ PL_no_dir_func, "rewinddir");
3934 #if defined(Direntry_t) && defined(HAS_READDIR)
3936 GV * const gv = MUTABLE_GV(POPs);
3937 IO * const io = GvIOn(gv);
3940 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
3941 "closedir() attempted on invalid dirhandle %"HEKf,
3942 HEKfARG(GvENAME_HEK(gv)));
3945 #ifdef VOID_CLOSEDIR
3946 PerlDir_close(IoDIRP(io));
3948 if (PerlDir_close(IoDIRP(io)) < 0) {
3949 IoDIRP(io) = 0; /* Don't try to close again--coredumps on SysV */
3958 SETERRNO(EBADF,RMS_IFI);
3961 DIE(aTHX_ PL_no_dir_func, "closedir");
3965 /* Process control. */
3972 #ifdef HAS_SIGPROCMASK
3973 sigset_t oldmask, newmask;
3977 PERL_FLUSHALL_FOR_CHILD;
3978 #ifdef HAS_SIGPROCMASK
3979 sigfillset(&newmask);
3980 sigprocmask(SIG_SETMASK, &newmask, &oldmask);
3982 childpid = PerlProc_fork();
3983 if (childpid == 0) {
3987 for (sig = 1; sig < SIG_SIZE; sig++)
3988 PL_psig_pend[sig] = 0;
3990 #ifdef HAS_SIGPROCMASK
3993 sigprocmask(SIG_SETMASK, &oldmask, NULL);
4000 #ifdef PERL_USES_PL_PIDSTATUS
4001 hv_clear(PL_pidstatus); /* no kids, so don't wait for 'em */
4007 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4012 PERL_FLUSHALL_FOR_CHILD;
4013 childpid = PerlProc_fork();
4019 DIE(aTHX_ PL_no_func, "fork");
4026 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(__LIBCATAMOUNT__)
4031 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
4032 childpid = wait4pid(-1, &argflags, 0);
4034 while ((childpid = wait4pid(-1, &argflags, 0)) == -1 &&
4039 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4040 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
4041 STATUS_NATIVE_CHILD_SET((childpid && childpid != -1) ? argflags : -1);
4043 STATUS_NATIVE_CHILD_SET((childpid > 0) ? argflags : -1);
4048 DIE(aTHX_ PL_no_func, "wait");
4054 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(__LIBCATAMOUNT__)
4056 const int optype = POPi;
4057 const Pid_t pid = TOPi;
4061 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
4062 result = wait4pid(pid, &argflags, optype);
4064 while ((result = wait4pid(pid, &argflags, optype)) == -1 &&
4069 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4070 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
4071 STATUS_NATIVE_CHILD_SET((result && result != -1) ? argflags : -1);
4073 STATUS_NATIVE_CHILD_SET((result > 0) ? argflags : -1);
4078 DIE(aTHX_ PL_no_func, "waitpid");
4084 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
4085 #if defined(__LIBCATAMOUNT__)
4086 PL_statusvalue = -1;
4095 while (++MARK <= SP) {
4096 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
4101 TAINT_PROPER("system");
4103 PERL_FLUSHALL_FOR_CHILD;
4104 #if (defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(OS2) || defined(PERL_MICRO)
4109 #ifdef HAS_SIGPROCMASK
4110 sigset_t newset, oldset;
4113 if (PerlProc_pipe(pp) >= 0)
4115 #ifdef HAS_SIGPROCMASK
4116 sigemptyset(&newset);
4117 sigaddset(&newset, SIGCHLD);
4118 sigprocmask(SIG_BLOCK, &newset, &oldset);
4120 while ((childpid = PerlProc_fork()) == -1) {
4121 if (errno != EAGAIN) {
4126 PerlLIO_close(pp[0]);
4127 PerlLIO_close(pp[1]);
4129 #ifdef HAS_SIGPROCMASK
4130 sigprocmask(SIG_SETMASK, &oldset, NULL);
4137 Sigsave_t ihand,qhand; /* place to save signals during system() */
4141 PerlLIO_close(pp[1]);
4143 rsignal_save(SIGINT, (Sighandler_t) SIG_IGN, &ihand);
4144 rsignal_save(SIGQUIT, (Sighandler_t) SIG_IGN, &qhand);
4147 result = wait4pid(childpid, &status, 0);
4148 } while (result == -1 && errno == EINTR);
4150 #ifdef HAS_SIGPROCMASK
4151 sigprocmask(SIG_SETMASK, &oldset, NULL);
4153 (void)rsignal_restore(SIGINT, &ihand);
4154 (void)rsignal_restore(SIGQUIT, &qhand);
4156 STATUS_NATIVE_CHILD_SET(result == -1 ? -1 : status);
4157 do_execfree(); /* free any memory child malloced on fork */
4164 while (n < sizeof(int)) {
4165 n1 = PerlLIO_read(pp[0],
4166 (void*)(((char*)&errkid)+n),
4172 PerlLIO_close(pp[0]);
4173 if (n) { /* Error */
4174 if (n != sizeof(int))
4175 DIE(aTHX_ "panic: kid popen errno read, n=%u", n);
4176 errno = errkid; /* Propagate errno from kid */
4177 STATUS_NATIVE_CHILD_SET(-1);
4180 XPUSHi(STATUS_CURRENT);
4183 #ifdef HAS_SIGPROCMASK
4184 sigprocmask(SIG_SETMASK, &oldset, NULL);
4187 PerlLIO_close(pp[0]);
4188 #if defined(HAS_FCNTL) && defined(F_SETFD)
4189 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
4192 if (PL_op->op_flags & OPf_STACKED) {
4193 SV * const really = *++MARK;
4194 value = (I32)do_aexec5(really, MARK, SP, pp[1], did_pipes);
4196 else if (SP - MARK != 1)
4197 value = (I32)do_aexec5(NULL, MARK, SP, pp[1], did_pipes);
4199 value = (I32)do_exec3(SvPVx_nolen(sv_mortalcopy(*SP)), pp[1], did_pipes);
4203 #else /* ! FORK or VMS or OS/2 */
4206 if (PL_op->op_flags & OPf_STACKED) {
4207 SV * const really = *++MARK;
4208 # if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__) || defined(__VMS)
4209 value = (I32)do_aspawn(really, MARK, SP);
4211 value = (I32)do_aspawn(really, (void **)MARK, (void **)SP);
4214 else if (SP - MARK != 1) {
4215 # if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__) || defined(__VMS)
4216 value = (I32)do_aspawn(NULL, MARK, SP);
4218 value = (I32)do_aspawn(NULL, (void **)MARK, (void **)SP);
4222 value = (I32)do_spawn(SvPVx_nolen(sv_mortalcopy(*SP)));
4224 if (PL_statusvalue == -1) /* hint that value must be returned as is */
4226 STATUS_NATIVE_CHILD_SET(value);
4229 XPUSHi(result ? value : STATUS_CURRENT);
4230 #endif /* !FORK or VMS or OS/2 */
4237 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
4242 while (++MARK <= SP) {
4243 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
4248 TAINT_PROPER("exec");
4250 PERL_FLUSHALL_FOR_CHILD;
4251 if (PL_op->op_flags & OPf_STACKED) {
4252 SV * const really = *++MARK;
4253 value = (I32)do_aexec(really, MARK, SP);
4255 else if (SP - MARK != 1)
4257 value = (I32)vms_do_aexec(NULL, MARK, SP);
4259 value = (I32)do_aexec(NULL, MARK, SP);
4263 value = (I32)vms_do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
4265 value = (I32)do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
4278 XPUSHi( getppid() );
4281 DIE(aTHX_ PL_no_func, "getppid");
4291 (MAXARG < 1) ? 0 : TOPs ? SvIVx(POPs) : ((void)POPs, 0);
4294 pgrp = (I32)BSD_GETPGRP(pid);
4296 if (pid != 0 && pid != PerlProc_getpid())
4297 DIE(aTHX_ "POSIX getpgrp can't take an argument");
4303 DIE(aTHX_ PL_no_func, "getpgrp()");
4313 pgrp = MAXARG == 2 && (TOPs||POPs) ? POPi : 0;
4314 if (MAXARG > 0) pid = TOPs && TOPi;
4320 TAINT_PROPER("setpgrp");
4322 SETi( BSD_SETPGRP(pid, pgrp) >= 0 );
4324 if ((pgrp != 0 && pgrp != PerlProc_getpid())
4325 || (pid != 0 && pid != PerlProc_getpid()))
4327 DIE(aTHX_ "setpgrp can't take arguments");
4329 SETi( setpgrp() >= 0 );
4330 #endif /* USE_BSDPGRP */
4333 DIE(aTHX_ PL_no_func, "setpgrp()");
4337 #if defined(__GLIBC__) && ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3) || (__GLIBC__ > 2))
4338 # define PRIORITY_WHICH_T(which) (__priority_which_t)which
4340 # define PRIORITY_WHICH_T(which) which
4345 #ifdef HAS_GETPRIORITY
4347 const int who = POPi;
4348 const int which = TOPi;
4349 SETi( getpriority(PRIORITY_WHICH_T(which), who) );
4352 DIE(aTHX_ PL_no_func, "getpriority()");
4358 #ifdef HAS_SETPRIORITY
4360 const int niceval = POPi;
4361 const int who = POPi;
4362 const int which = TOPi;
4363 TAINT_PROPER("setpriority");
4364 SETi( setpriority(PRIORITY_WHICH_T(which), who, niceval) >= 0 );
4367 DIE(aTHX_ PL_no_func, "setpriority()");
4371 #undef PRIORITY_WHICH_T
4379 XPUSHn( time(NULL) );
4381 XPUSHi( time(NULL) );
4393 (void)PerlProc_times(&PL_timesbuf);
4395 (void)PerlProc_times((tbuffer_t *)&PL_timesbuf); /* time.h uses different name for */
4396 /* struct tms, though same data */
4400 mPUSHn(((NV)PL_timesbuf.tms_utime)/(NV)PL_clocktick);
4401 if (GIMME == G_ARRAY) {
4402 mPUSHn(((NV)PL_timesbuf.tms_stime)/(NV)PL_clocktick);
4403 mPUSHn(((NV)PL_timesbuf.tms_cutime)/(NV)PL_clocktick);
4404 mPUSHn(((NV)PL_timesbuf.tms_cstime)/(NV)PL_clocktick);
4412 if (GIMME == G_ARRAY) {
4419 DIE(aTHX_ "times not implemented");
4421 #endif /* HAS_TIMES */
4424 /* The 32 bit int year limits the times we can represent to these
4425 boundaries with a few days wiggle room to account for time zone
4428 /* Sat Jan 3 00:00:00 -2147481748 */
4429 #define TIME_LOWER_BOUND -67768100567755200.0
4430 /* Sun Dec 29 12:00:00 2147483647 */
4431 #define TIME_UPPER_BOUND 67767976233316800.0
4440 const char *opname = PL_op->op_type == OP_LOCALTIME ? "localtime" : "gmtime";
4441 static const char * const dayname[] =
4442 {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
4443 static const char * const monname[] =
4444 {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
4445 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
4447 if (MAXARG < 1 || (!TOPs && ((void)POPs, 1))) {
4450 when = (Time64_T)now;
4453 NV input = Perl_floor(POPn);
4454 when = (Time64_T)input;
4455 if (when != input) {
4456 /* diag_listed_as: gmtime(%f) too large */
4457 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4458 "%s(%.0" NVff ") too large", opname, input);
4462 if ( TIME_LOWER_BOUND > when ) {
4463 /* diag_listed_as: gmtime(%f) too small */
4464 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4465 "%s(%.0" NVff ") too small", opname, when);
4468 else if( when > TIME_UPPER_BOUND ) {
4469 /* diag_listed_as: gmtime(%f) too small */
4470 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4471 "%s(%.0" NVff ") too large", opname, when);
4475 if (PL_op->op_type == OP_LOCALTIME)
4476 err = S_localtime64_r(&when, &tmbuf);
4478 err = S_gmtime64_r(&when, &tmbuf);
4482 /* XXX %lld broken for quads */
4483 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4484 "%s(%.0" NVff ") failed", opname, when);
4487 if (GIMME != G_ARRAY) { /* scalar context */
4489 /* XXX newSVpvf()'s %lld type is broken, so cheat with a double */
4490 double year = (double)tmbuf.tm_year + 1900;
4497 tsv = Perl_newSVpvf(aTHX_ "%s %s %2d %02d:%02d:%02d %.0f",
4498 dayname[tmbuf.tm_wday],
4499 monname[tmbuf.tm_mon],
4507 else { /* list context */
4513 mPUSHi(tmbuf.tm_sec);
4514 mPUSHi(tmbuf.tm_min);
4515 mPUSHi(tmbuf.tm_hour);
4516 mPUSHi(tmbuf.tm_mday);
4517 mPUSHi(tmbuf.tm_mon);
4518 mPUSHn(tmbuf.tm_year);
4519 mPUSHi(tmbuf.tm_wday);
4520 mPUSHi(tmbuf.tm_yday);
4521 mPUSHi(tmbuf.tm_isdst);
4532 anum = alarm((unsigned int)anum);
4538 DIE(aTHX_ PL_no_func, "alarm");
4549 (void)time(&lasttime);
4550 if (MAXARG < 1 || (!TOPs && !POPs))
4554 PerlProc_sleep((unsigned int)duration);
4557 XPUSHi(when - lasttime);
4561 /* Shared memory. */
4562 /* Merged with some message passing. */
4566 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4567 dVAR; dSP; dMARK; dTARGET;
4568 const int op_type = PL_op->op_type;
4573 value = (I32)(do_msgsnd(MARK, SP) >= 0);
4576 value = (I32)(do_msgrcv(MARK, SP) >= 0);
4579 value = (I32)(do_semop(MARK, SP) >= 0);
4582 value = (I32)(do_shmio(op_type, MARK, SP) >= 0);
4590 return Perl_pp_semget(aTHX);
4598 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4599 dVAR; dSP; dMARK; dTARGET;
4600 const int anum = do_ipcget(PL_op->op_type, MARK, SP);
4607 DIE(aTHX_ "System V IPC is not implemented on this machine");
4613 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4614 dVAR; dSP; dMARK; dTARGET;
4615 const int anum = do_ipcctl(PL_op->op_type, MARK, SP);
4623 PUSHp(zero_but_true, ZBTLEN);
4627 return Perl_pp_semget(aTHX);
4631 /* I can't const this further without getting warnings about the types of
4632 various arrays passed in from structures. */
4634 S_space_join_names_mortal(pTHX_ char *const *array)
4638 PERL_ARGS_ASSERT_SPACE_JOIN_NAMES_MORTAL;
4640 if (array && *array) {
4641 target = newSVpvs_flags("", SVs_TEMP);
4643 sv_catpv(target, *array);
4646 sv_catpvs(target, " ");
4649 target = sv_mortalcopy(&PL_sv_no);
4654 /* Get system info. */
4658 #if defined(HAS_GETHOSTBYNAME) || defined(HAS_GETHOSTBYADDR) || defined(HAS_GETHOSTENT)
4660 I32 which = PL_op->op_type;
4663 #ifndef HAS_GETHOST_PROTOS /* XXX Do we need individual probes? */
4664 struct hostent *gethostbyaddr(Netdb_host_t, Netdb_hlen_t, int);
4665 struct hostent *gethostbyname(Netdb_name_t);
4666 struct hostent *gethostent(void);
4668 struct hostent *hent = NULL;
4672 if (which == OP_GHBYNAME) {
4673 #ifdef HAS_GETHOSTBYNAME
4674 const char* const name = POPpbytex;
4675 hent = PerlSock_gethostbyname(name);
4677 DIE(aTHX_ PL_no_sock_func, "gethostbyname");
4680 else if (which == OP_GHBYADDR) {
4681 #ifdef HAS_GETHOSTBYADDR
4682 const int addrtype = POPi;
4683 SV * const addrsv = POPs;
4685 const char *addr = (char *)SvPVbyte(addrsv, addrlen);
4687 hent = PerlSock_gethostbyaddr(addr, (Netdb_hlen_t) addrlen, addrtype);
4689 DIE(aTHX_ PL_no_sock_func, "gethostbyaddr");
4693 #ifdef HAS_GETHOSTENT
4694 hent = PerlSock_gethostent();
4696 DIE(aTHX_ PL_no_sock_func, "gethostent");
4699 #ifdef HOST_NOT_FOUND
4701 #ifdef USE_REENTRANT_API
4702 # ifdef USE_GETHOSTENT_ERRNO
4703 h_errno = PL_reentrant_buffer->_gethostent_errno;
4706 STATUS_UNIX_SET(h_errno);
4710 if (GIMME != G_ARRAY) {
4711 PUSHs(sv = sv_newmortal());
4713 if (which == OP_GHBYNAME) {
4715 sv_setpvn(sv, hent->h_addr, hent->h_length);
4718 sv_setpv(sv, (char*)hent->h_name);
4724 mPUSHs(newSVpv((char*)hent->h_name, 0));
4725 PUSHs(space_join_names_mortal(hent->h_aliases));
4726 mPUSHi(hent->h_addrtype);
4727 len = hent->h_length;
4730 for (elem = hent->h_addr_list; elem && *elem; elem++) {
4731 mXPUSHp(*elem, len);
4735 mPUSHp(hent->h_addr, len);
4737 PUSHs(sv_mortalcopy(&PL_sv_no));
4742 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
4748 #if defined(HAS_GETNETBYNAME) || defined(HAS_GETNETBYADDR) || defined(HAS_GETNETENT)
4750 I32 which = PL_op->op_type;
4752 #ifndef HAS_GETNET_PROTOS /* XXX Do we need individual probes? */
4753 struct netent *getnetbyaddr(Netdb_net_t, int);
4754 struct netent *getnetbyname(Netdb_name_t);
4755 struct netent *getnetent(void);
4757 struct netent *nent;
4759 if (which == OP_GNBYNAME){
4760 #ifdef HAS_GETNETBYNAME
4761 const char * const name = POPpbytex;
4762 nent = PerlSock_getnetbyname(name);
4764 DIE(aTHX_ PL_no_sock_func, "getnetbyname");
4767 else if (which == OP_GNBYADDR) {
4768 #ifdef HAS_GETNETBYADDR
4769 const int addrtype = POPi;
4770 const Netdb_net_t addr = (Netdb_net_t) (U32)POPu;
4771 nent = PerlSock_getnetbyaddr(addr, addrtype);
4773 DIE(aTHX_ PL_no_sock_func, "getnetbyaddr");
4777 #ifdef HAS_GETNETENT
4778 nent = PerlSock_getnetent();
4780 DIE(aTHX_ PL_no_sock_func, "getnetent");
4783 #ifdef HOST_NOT_FOUND
4785 #ifdef USE_REENTRANT_API
4786 # ifdef USE_GETNETENT_ERRNO
4787 h_errno = PL_reentrant_buffer->_getnetent_errno;
4790 STATUS_UNIX_SET(h_errno);
4795 if (GIMME != G_ARRAY) {
4796 PUSHs(sv = sv_newmortal());
4798 if (which == OP_GNBYNAME)
4799 sv_setiv(sv, (IV)nent->n_net);
4801 sv_setpv(sv, nent->n_name);
4807 mPUSHs(newSVpv(nent->n_name, 0));
4808 PUSHs(space_join_names_mortal(nent->n_aliases));
4809 mPUSHi(nent->n_addrtype);
4810 mPUSHi(nent->n_net);
4815 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
4821 #if defined(HAS_GETPROTOBYNAME) || defined(HAS_GETPROTOBYNUMBER) || defined(HAS_GETPROTOENT)
4823 I32 which = PL_op->op_type;
4825 #ifndef HAS_GETPROTO_PROTOS /* XXX Do we need individual probes? */
4826 struct protoent *getprotobyname(Netdb_name_t);
4827 struct protoent *getprotobynumber(int);
4828 struct protoent *getprotoent(void);
4830 struct protoent *pent;
4832 if (which == OP_GPBYNAME) {
4833 #ifdef HAS_GETPROTOBYNAME
4834 const char* const name = POPpbytex;
4835 pent = PerlSock_getprotobyname(name);
4837 DIE(aTHX_ PL_no_sock_func, "getprotobyname");
4840 else if (which == OP_GPBYNUMBER) {
4841 #ifdef HAS_GETPROTOBYNUMBER
4842 const int number = POPi;
4843 pent = PerlSock_getprotobynumber(number);
4845 DIE(aTHX_ PL_no_sock_func, "getprotobynumber");
4849 #ifdef HAS_GETPROTOENT
4850 pent = PerlSock_getprotoent();
4852 DIE(aTHX_ PL_no_sock_func, "getprotoent");
4856 if (GIMME != G_ARRAY) {
4857 PUSHs(sv = sv_newmortal());
4859 if (which == OP_GPBYNAME)
4860 sv_setiv(sv, (IV)pent->p_proto);
4862 sv_setpv(sv, pent->p_name);
4868 mPUSHs(newSVpv(pent->p_name, 0));
4869 PUSHs(space_join_names_mortal(pent->p_aliases));
4870 mPUSHi(pent->p_proto);
4875 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
4881 #if defined(HAS_GETSERVBYNAME) || defined(HAS_GETSERVBYPORT) || defined(HAS_GETSERVENT)
4883 I32 which = PL_op->op_type;
4885 #ifndef HAS_GETSERV_PROTOS /* XXX Do we need individual probes? */
4886 struct servent *getservbyname(Netdb_name_t, Netdb_name_t);
4887 struct servent *getservbyport(int, Netdb_name_t);
4888 struct servent *getservent(void);
4890 struct servent *sent;
4892 if (which == OP_GSBYNAME) {
4893 #ifdef HAS_GETSERVBYNAME
4894 const char * const proto = POPpbytex;
4895 const char * const name = POPpbytex;
4896 sent = PerlSock_getservbyname(name, (proto && !*proto) ? NULL : proto);
4898 DIE(aTHX_ PL_no_sock_func, "getservbyname");
4901 else if (which == OP_GSBYPORT) {
4902 #ifdef HAS_GETSERVBYPORT
4903 const char * const proto = POPpbytex;
4904 unsigned short port = (unsigned short)POPu;
4905 port = PerlSock_htons(port);
4906 sent = PerlSock_getservbyport(port, (proto && !*proto) ? NULL : proto);
4908 DIE(aTHX_ PL_no_sock_func, "getservbyport");
4912 #ifdef HAS_GETSERVENT
4913 sent = PerlSock_getservent();
4915 DIE(aTHX_ PL_no_sock_func, "getservent");
4919 if (GIMME != G_ARRAY) {
4920 PUSHs(sv = sv_newmortal());
4922 if (which == OP_GSBYNAME) {
4923 sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
4926 sv_setpv(sv, sent->s_name);
4932 mPUSHs(newSVpv(sent->s_name, 0));
4933 PUSHs(space_join_names_mortal(sent->s_aliases));
4934 mPUSHi(PerlSock_ntohs(sent->s_port));
4935 mPUSHs(newSVpv(sent->s_proto, 0));
4940 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
4947 const int stayopen = TOPi;
4948 switch(PL_op->op_type) {
4950 #ifdef HAS_SETHOSTENT
4951 PerlSock_sethostent(stayopen);
4953 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
4956 #ifdef HAS_SETNETENT
4958 PerlSock_setnetent(stayopen);
4960 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
4964 #ifdef HAS_SETPROTOENT
4965 PerlSock_setprotoent(stayopen);
4967 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
4971 #ifdef HAS_SETSERVENT
4972 PerlSock_setservent(stayopen);
4974 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
4984 switch(PL_op->op_type) {
4986 #ifdef HAS_ENDHOSTENT
4987 PerlSock_endhostent();
4989 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
4993 #ifdef HAS_ENDNETENT
4994 PerlSock_endnetent();
4996 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5000 #ifdef HAS_ENDPROTOENT
5001 PerlSock_endprotoent();
5003 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5007 #ifdef HAS_ENDSERVENT
5008 PerlSock_endservent();
5010 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5014 #if defined(HAS_GROUP) && defined(HAS_SETGRENT)
5017 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5021 #if defined(HAS_GROUP) && defined(HAS_ENDGRENT)
5024 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5028 #if defined(HAS_PASSWD) && defined(HAS_SETPWENT)
5031 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5035 #if defined(HAS_PASSWD) && defined(HAS_ENDPWENT)
5038 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5050 I32 which = PL_op->op_type;
5052 struct passwd *pwent = NULL;
5054 * We currently support only the SysV getsp* shadow password interface.
5055 * The interface is declared in <shadow.h> and often one needs to link
5056 * with -lsecurity or some such.
5057 * This interface is used at least by Solaris, HP-UX, IRIX, and Linux.
5060 * AIX getpwnam() is clever enough to return the encrypted password
5061 * only if the caller (euid?) is root.
5063 * There are at least three other shadow password APIs. Many platforms
5064 * seem to contain more than one interface for accessing the shadow
5065 * password databases, possibly for compatibility reasons.
5066 * The getsp*() is by far he simplest one, the other two interfaces
5067 * are much more complicated, but also very similar to each other.
5072 * struct pr_passwd *getprpw*();
5073 * The password is in
5074 * char getprpw*(...).ufld.fd_encrypt[]
5075 * Mention HAS_GETPRPWNAM here so that Configure probes for it.
5080 * struct es_passwd *getespw*();
5081 * The password is in
5082 * char *(getespw*(...).ufld.fd_encrypt)
5083 * Mention HAS_GETESPWNAM here so that Configure probes for it.
5086 * struct userpw *getuserpw();
5087 * The password is in
5088 * char *(getuserpw(...)).spw_upw_passwd
5089 * (but the de facto standard getpwnam() should work okay)
5091 * Mention I_PROT here so that Configure probes for it.
5093 * In HP-UX for getprpw*() the manual page claims that one should include
5094 * <hpsecurity.h> instead of <sys/security.h>, but that is not needed
5095 * if one includes <shadow.h> as that includes <hpsecurity.h>,
5096 * and pp_sys.c already includes <shadow.h> if there is such.
5098 * Note that <sys/security.h> is already probed for, but currently
5099 * it is only included in special cases.
5101 * In Digital UNIX/Tru64 if using the getespw*() (which seems to be
5102 * be preferred interface, even though also the getprpw*() interface
5103 * is available) one needs to link with -lsecurity -ldb -laud -lm.
5104 * One also needs to call set_auth_parameters() in main() before
5105 * doing anything else, whether one is using getespw*() or getprpw*().
5107 * Note that accessing the shadow databases can be magnitudes
5108 * slower than accessing the standard databases.
5113 # if defined(__CYGWIN__) && defined(USE_REENTRANT_API)
5114 /* Cygwin 1.5.3-1 has buggy getpwnam_r() and getpwuid_r():
5115 * the pw_comment is left uninitialized. */
5116 PL_reentrant_buffer->_pwent_struct.pw_comment = NULL;
5122 const char* const name = POPpbytex;
5123 pwent = getpwnam(name);
5129 pwent = getpwuid(uid);
5133 # ifdef HAS_GETPWENT
5135 #ifdef POSIX_BC /* In some cases pw_passwd has invalid addresses */
5136 if (pwent) pwent = getpwnam(pwent->pw_name);
5139 DIE(aTHX_ PL_no_func, "getpwent");
5145 if (GIMME != G_ARRAY) {
5146 PUSHs(sv = sv_newmortal());
5148 if (which == OP_GPWNAM)
5149 sv_setuid(sv, pwent->pw_uid);
5151 sv_setpv(sv, pwent->pw_name);
5157 mPUSHs(newSVpv(pwent->pw_name, 0));
5161 /* If we have getspnam(), we try to dig up the shadow
5162 * password. If we are underprivileged, the shadow
5163 * interface will set the errno to EACCES or similar,
5164 * and return a null pointer. If this happens, we will
5165 * use the dummy password (usually "*" or "x") from the
5166 * standard password database.
5168 * In theory we could skip the shadow call completely
5169 * if euid != 0 but in practice we cannot know which
5170 * security measures are guarding the shadow databases
5171 * on a random platform.
5173 * Resist the urge to use additional shadow interfaces.
5174 * Divert the urge to writing an extension instead.
5177 /* Some AIX setups falsely(?) detect some getspnam(), which
5178 * has a different API than the Solaris/IRIX one. */
5179 # if defined(HAS_GETSPNAM) && !defined(_AIX)
5182 const struct spwd * const spwent = getspnam(pwent->pw_name);
5183 /* Save and restore errno so that
5184 * underprivileged attempts seem
5185 * to have never made the unsuccessful
5186 * attempt to retrieve the shadow password. */
5188 if (spwent && spwent->sp_pwdp)
5189 sv_setpv(sv, spwent->sp_pwdp);
5193 if (!SvPOK(sv)) /* Use the standard password, then. */
5194 sv_setpv(sv, pwent->pw_passwd);
5197 /* passwd is tainted because user himself can diddle with it.
5198 * admittedly not much and in a very limited way, but nevertheless. */
5201 sv_setuid(PUSHmortal, pwent->pw_uid);
5202 sv_setgid(PUSHmortal, pwent->pw_gid);
5204 /* pw_change, pw_quota, and pw_age are mutually exclusive--
5205 * because of the poor interface of the Perl getpw*(),
5206 * not because there's some standard/convention saying so.
5207 * A better interface would have been to return a hash,
5208 * but we are accursed by our history, alas. --jhi. */
5210 mPUSHi(pwent->pw_change);
5213 mPUSHi(pwent->pw_quota);
5216 mPUSHs(newSVpv(pwent->pw_age, 0));
5218 /* I think that you can never get this compiled, but just in case. */
5219 PUSHs(sv_mortalcopy(&PL_sv_no));
5224 /* pw_class and pw_comment are mutually exclusive--.
5225 * see the above note for pw_change, pw_quota, and pw_age. */
5227 mPUSHs(newSVpv(pwent->pw_class, 0));
5230 mPUSHs(newSVpv(pwent->pw_comment, 0));
5232 /* I think that you can never get this compiled, but just in case. */
5233 PUSHs(sv_mortalcopy(&PL_sv_no));
5238 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_gecos, 0)));
5240 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5242 /* pw_gecos is tainted because user himself can diddle with it. */
5245 mPUSHs(newSVpv(pwent->pw_dir, 0));
5247 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_shell, 0)));
5248 /* pw_shell is tainted because user himself can diddle with it. */
5252 mPUSHi(pwent->pw_expire);
5257 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5265 const I32 which = PL_op->op_type;
5266 const struct group *grent;
5268 if (which == OP_GGRNAM) {
5269 const char* const name = POPpbytex;
5270 grent = (const struct group *)getgrnam(name);
5272 else if (which == OP_GGRGID) {
5273 const Gid_t gid = POPi;
5274 grent = (const struct group *)getgrgid(gid);
5278 grent = (struct group *)getgrent();
5280 DIE(aTHX_ PL_no_func, "getgrent");
5284 if (GIMME != G_ARRAY) {
5285 SV * const sv = sv_newmortal();
5289 if (which == OP_GGRNAM)
5290 sv_setgid(sv, grent->gr_gid);
5292 sv_setpv(sv, grent->gr_name);
5298 mPUSHs(newSVpv(grent->gr_name, 0));
5301 mPUSHs(newSVpv(grent->gr_passwd, 0));
5303 PUSHs(sv_mortalcopy(&PL_sv_no));
5306 sv_setgid(PUSHmortal, grent->gr_gid);
5308 #if !(defined(_CRAYMPP) && defined(USE_REENTRANT_API))
5309 /* In UNICOS/mk (_CRAYMPP) the multithreading
5310 * versions (getgrnam_r, getgrgid_r)
5311 * seem to return an illegal pointer
5312 * as the group members list, gr_mem.
5313 * getgrent() doesn't even have a _r version
5314 * but the gr_mem is poisonous anyway.
5315 * So yes, you cannot get the list of group
5316 * members if building multithreaded in UNICOS/mk. */
5317 PUSHs(space_join_names_mortal(grent->gr_mem));
5323 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5333 if (!(tmps = PerlProc_getlogin()))
5335 sv_setpv_mg(TARG, tmps);
5339 DIE(aTHX_ PL_no_func, "getlogin");
5343 /* Miscellaneous. */
5348 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
5349 I32 items = SP - MARK;
5350 unsigned long a[20];
5355 while (++MARK <= SP) {
5356 if (SvTAINTED(*MARK)) {
5362 TAINT_PROPER("syscall");
5365 /* This probably won't work on machines where sizeof(long) != sizeof(int)
5366 * or where sizeof(long) != sizeof(char*). But such machines will
5367 * not likely have syscall implemented either, so who cares?
5369 while (++MARK <= SP) {
5370 if (SvNIOK(*MARK) || !i)
5371 a[i++] = SvIV(*MARK);
5372 else if (*MARK == &PL_sv_undef)
5375 a[i++] = (unsigned long)SvPV_force_nolen(*MARK);
5381 DIE(aTHX_ "Too many args to syscall");
5383 DIE(aTHX_ "Too few args to syscall");
5385 retval = syscall(a[0]);
5388 retval = syscall(a[0],a[1]);
5391 retval = syscall(a[0],a[1],a[2]);
5394 retval = syscall(a[0],a[1],a[2],a[3]);
5397 retval = syscall(a[0],a[1],a[2],a[3],a[4]);
5400 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5]);
5403 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6]);
5406 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7]);
5413 DIE(aTHX_ PL_no_func, "syscall");
5417 #ifdef FCNTL_EMULATE_FLOCK
5419 /* XXX Emulate flock() with fcntl().
5420 What's really needed is a good file locking module.
5424 fcntl_emulate_flock(int fd, int operation)
5429 switch (operation & ~LOCK_NB) {
5431 flock.l_type = F_RDLCK;
5434 flock.l_type = F_WRLCK;
5437 flock.l_type = F_UNLCK;
5443 flock.l_whence = SEEK_SET;
5444 flock.l_start = flock.l_len = (Off_t)0;
5446 res = fcntl(fd, (operation & LOCK_NB) ? F_SETLK : F_SETLKW, &flock);
5447 if (res == -1 && ((errno == EAGAIN) || (errno == EACCES)))
5448 errno = EWOULDBLOCK;
5452 #endif /* FCNTL_EMULATE_FLOCK */
5454 #ifdef LOCKF_EMULATE_FLOCK
5456 /* XXX Emulate flock() with lockf(). This is just to increase
5457 portability of scripts. The calls are not completely
5458 interchangeable. What's really needed is a good file
5462 /* The lockf() constants might have been defined in <unistd.h>.
5463 Unfortunately, <unistd.h> causes troubles on some mixed
5464 (BSD/POSIX) systems, such as SunOS 4.1.3.
5466 Further, the lockf() constants aren't POSIX, so they might not be
5467 visible if we're compiling with _POSIX_SOURCE defined. Thus, we'll
5468 just stick in the SVID values and be done with it. Sigh.
5472 # define F_ULOCK 0 /* Unlock a previously locked region */
5475 # define F_LOCK 1 /* Lock a region for exclusive use */
5478 # define F_TLOCK 2 /* Test and lock a region for exclusive use */
5481 # define F_TEST 3 /* Test a region for other processes locks */
5485 lockf_emulate_flock(int fd, int operation)
5491 /* flock locks entire file so for lockf we need to do the same */
5492 pos = PerlLIO_lseek(fd, (Off_t)0, SEEK_CUR); /* get pos to restore later */
5493 if (pos > 0) /* is seekable and needs to be repositioned */
5494 if (PerlLIO_lseek(fd, (Off_t)0, SEEK_SET) < 0)
5495 pos = -1; /* seek failed, so don't seek back afterwards */
5498 switch (operation) {
5500 /* LOCK_SH - get a shared lock */
5502 /* LOCK_EX - get an exclusive lock */
5504 i = lockf (fd, F_LOCK, 0);
5507 /* LOCK_SH|LOCK_NB - get a non-blocking shared lock */
5508 case LOCK_SH|LOCK_NB:
5509 /* LOCK_EX|LOCK_NB - get a non-blocking exclusive lock */
5510 case LOCK_EX|LOCK_NB:
5511 i = lockf (fd, F_TLOCK, 0);
5513 if ((errno == EAGAIN) || (errno == EACCES))
5514 errno = EWOULDBLOCK;
5517 /* LOCK_UN - unlock (non-blocking is a no-op) */
5519 case LOCK_UN|LOCK_NB:
5520 i = lockf (fd, F_ULOCK, 0);
5523 /* Default - can't decipher operation */
5530 if (pos > 0) /* need to restore position of the handle */
5531 PerlLIO_lseek(fd, pos, SEEK_SET); /* ignore error here */
5536 #endif /* LOCKF_EMULATE_FLOCK */
5540 * c-indentation-style: bsd
5542 * indent-tabs-mode: nil
5545 * ex: set ts=8 sts=4 sw=4 et: