3 * Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
4 * 2004, 2005, 2006, 2007, 2008 by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
12 * But only a short way ahead its floor and the walls on either side were
13 * cloven by a great fissure, out of which the red glare came, now leaping
14 * up, now dying down into darkness; and all the while far below there was
15 * a rumour and a trouble as of great engines throbbing and labouring.
17 * [p.945 of _The Lord of the Rings_, VI/iii: "Mount Doom"]
20 /* This file contains system pp ("push/pop") functions that
21 * execute the opcodes that make up a perl program. A typical pp function
22 * expects to find its arguments on the stack, and usually pushes its
23 * results onto the stack, hence the 'pp' terminology. Each OP structure
24 * contains a pointer to the relevant pp_foo() function.
26 * By 'system', we mean ops which interact with the OS, such as pp_open().
30 #define PERL_IN_PP_SYS_C
36 /* Shadow password support for solaris - pdo@cs.umd.edu
37 * Not just Solaris: at least HP-UX, IRIX, Linux.
38 * The API is from SysV.
40 * There are at least two more shadow interfaces,
41 * see the comments in pp_gpwent().
45 /* There is a MAXINT coming from <shadow.h> <- <hpsecurity.h> <- <values.h>
46 * and another MAXINT from "perl.h" <- <sys/param.h>. */
53 # include <sys/resource.h>
62 # include <sys/select.h>
66 /* XXX Configure test needed.
67 h_errno might not be a simple 'int', especially for multi-threaded
68 applications, see "extern int errno in perl.h". Creating such
69 a test requires taking into account the differences between
70 compiling multithreaded and singlethreaded ($ccflags et al).
71 HOST_NOT_FOUND is typically defined in <netdb.h>.
73 #if defined(HOST_NOT_FOUND) && !defined(h_errno) && !defined(__CYGWIN__)
82 struct passwd *getpwnam (char *);
83 struct passwd *getpwuid (Uid_t);
88 struct passwd *getpwent (void);
89 #elif defined (VMS) && defined (my_getpwent)
90 struct passwd *Perl_my_getpwent (pTHX);
99 struct group *getgrnam (char *);
100 struct group *getgrgid (Gid_t);
104 struct group *getgrent (void);
110 # if defined(_MSC_VER) || defined(__MINGW32__)
111 # include <sys/utime.h>
118 # ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
121 # define my_chsize PerlLIO_chsize
124 # define my_chsize PerlLIO_chsize
126 I32 my_chsize(int fd, Off_t length);
132 #else /* no flock() */
134 /* fcntl.h might not have been included, even if it exists, because
135 the current Configure only sets I_FCNTL if it's needed to pick up
136 the *_OK constants. Make sure it has been included before testing
137 the fcntl() locking constants. */
138 # if defined(HAS_FCNTL) && !defined(I_FCNTL)
142 # if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
143 # define FLOCK fcntl_emulate_flock
144 # define FCNTL_EMULATE_FLOCK
145 # else /* no flock() or fcntl(F_SETLK,...) */
147 # define FLOCK lockf_emulate_flock
148 # define LOCKF_EMULATE_FLOCK
150 # endif /* no flock() or fcntl(F_SETLK,...) */
153 static int FLOCK (int, int);
156 * These are the flock() constants. Since this sytems doesn't have
157 * flock(), the values of the constants are probably not available.
171 # endif /* emulating flock() */
173 #endif /* no flock() */
176 static const char zero_but_true[ZBTLEN + 1] = "0 but true";
178 #if defined(I_SYS_ACCESS) && !defined(R_OK)
179 # include <sys/access.h>
182 #if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
183 # define FD_CLOEXEC 1 /* NeXT needs this */
189 /* Missing protos on LynxOS */
190 void sethostent(int);
191 void endhostent(void);
193 void endnetent(void);
194 void setprotoent(int);
195 void endprotoent(void);
196 void setservent(int);
197 void endservent(void);
200 #undef PERL_EFF_ACCESS /* EFFective uid/gid ACCESS */
202 /* F_OK unused: if stat() cannot find it... */
204 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
205 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
206 # define PERL_EFF_ACCESS(p,f) (access((p), (f) | EFF_ONLY_OK))
209 #if !defined(PERL_EFF_ACCESS) && defined(HAS_EACCESS)
210 # ifdef I_SYS_SECURITY
211 # include <sys/security.h>
215 # define PERL_EFF_ACCESS(p,f) (eaccess((p), (f), ACC_SELF))
218 # define PERL_EFF_ACCESS(p,f) (eaccess((p), (f)))
222 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESSX) && defined(ACC_SELF)
224 # define PERL_EFF_ACCESS(p,f) (accessx((p), (f), ACC_SELF))
228 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) \
229 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
230 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
233 S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
235 const Uid_t ruid = getuid();
236 const Uid_t euid = geteuid();
237 const Gid_t rgid = getgid();
238 const Gid_t egid = getegid();
241 #if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
242 Perl_croak(aTHX_ "switching effective uid is not implemented");
245 if (setreuid(euid, ruid))
248 if (setresuid(euid, ruid, (Uid_t)-1))
251 /* diag_listed_as: entering effective %s failed */
252 Perl_croak(aTHX_ "entering effective uid failed");
255 #if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
256 Perl_croak(aTHX_ "switching effective gid is not implemented");
259 if (setregid(egid, rgid))
262 if (setresgid(egid, rgid, (Gid_t)-1))
265 /* diag_listed_as: entering effective %s failed */
266 Perl_croak(aTHX_ "entering effective gid failed");
269 res = access(path, mode);
272 if (setreuid(ruid, euid))
275 if (setresuid(ruid, euid, (Uid_t)-1))
278 /* diag_listed_as: leaving effective %s failed */
279 Perl_croak(aTHX_ "leaving effective uid failed");
282 if (setregid(rgid, egid))
285 if (setresgid(rgid, egid, (Gid_t)-1))
288 /* diag_listed_as: leaving effective %s failed */
289 Perl_croak(aTHX_ "leaving effective gid failed");
293 # define PERL_EFF_ACCESS(p,f) (S_emulate_eaccess(aTHX_ (p), (f)))
300 const char * const tmps = POPpconstx;
301 const I32 gimme = GIMME_V;
302 const char *mode = "r";
305 if (PL_op->op_private & OPpOPEN_IN_RAW)
307 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
309 fp = PerlProc_popen(tmps, mode);
311 const char * const type = Perl_PerlIO_context_layers(aTHX_ NULL);
313 PerlIO_apply_layers(aTHX_ fp,mode,type);
315 if (gimme == G_VOID) {
317 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
320 else if (gimme == G_SCALAR) {
321 ENTER_with_name("backtick");
323 PL_rs = &PL_sv_undef;
324 sv_setpvs(TARG, ""); /* note that this preserves previous buffer */
325 while (sv_gets(TARG, fp, SvCUR(TARG)) != NULL)
327 LEAVE_with_name("backtick");
333 SV * const sv = newSV(79);
334 if (sv_gets(sv, fp, 0) == NULL) {
339 if (SvLEN(sv) - SvCUR(sv) > 20) {
340 SvPV_shrink_to_cur(sv);
345 STATUS_NATIVE_CHILD_SET(PerlProc_pclose(fp));
346 TAINT; /* "I believe that this is not gratuitous!" */
349 STATUS_NATIVE_CHILD_SET(-1);
350 if (gimme == G_SCALAR)
362 /* make a copy of the pattern if it is gmagical, to ensure that magic
363 * is called once and only once */
364 if (SvGMAGICAL(TOPm1s)) TOPm1s = sv_2mortal(newSVsv(TOPm1s));
366 tryAMAGICunTARGET(iter_amg, -1, (PL_op->op_flags & OPf_SPECIAL));
368 if (PL_op->op_flags & OPf_SPECIAL) {
369 /* call Perl-level glob function instead. Stack args are:
370 * MARK, wildcard, csh_glob context index
371 * and following OPs should be: gv(CORE::GLOBAL::glob), entersub
375 /* stack args are: wildcard, gv(_GEN_n) */
383 /* Note that we only ever get here if File::Glob fails to load
384 * without at the same time croaking, for some reason, or if
385 * perl was built with PERL_EXTERNAL_GLOB */
387 ENTER_with_name("glob");
392 * The external globbing program may use things we can't control,
393 * so for security reasons we must assume the worst.
396 taint_proper(PL_no_security, "glob");
400 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
401 PL_last_in_gv = MUTABLE_GV(*PL_stack_sp--);
403 SAVESPTR(PL_rs); /* This is not permanent, either. */
404 PL_rs = newSVpvs_flags("\000", SVs_TEMP);
407 *SvPVX(PL_rs) = '\n';
411 result = do_readline();
412 LEAVE_with_name("glob");
419 PL_last_in_gv = cGVOP_gv;
420 return do_readline();
430 do_join(TARG, &PL_sv_no, MARK, SP);
434 else if (SP == MARK) {
443 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
444 /* well-formed exception supplied */
446 else if (SvROK(ERRSV)) {
449 else if (SvPOK(ERRSV) && SvCUR(ERRSV)) {
450 exsv = sv_mortalcopy(ERRSV);
451 sv_catpvs(exsv, "\t...caught");
454 exsv = newSVpvs_flags("Warning: something's wrong", SVs_TEMP);
456 if (SvROK(exsv) && !PL_warnhook)
457 Perl_warn(aTHX_ "%"SVf, SVfARG(exsv));
468 VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
470 if (SP - MARK != 1) {
472 do_join(TARG, &PL_sv_no, MARK, SP);
480 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
481 /* well-formed exception supplied */
483 else if (SvROK(ERRSV)) {
485 if (sv_isobject(exsv)) {
486 HV * const stash = SvSTASH(SvRV(exsv));
487 GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
489 SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
490 SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
497 call_sv(MUTABLE_SV(GvCV(gv)),
498 G_SCALAR|G_EVAL|G_KEEPERR);
499 exsv = sv_mortalcopy(*PL_stack_sp--);
503 else if (SvPOK(ERRSV) && SvCUR(ERRSV)) {
504 exsv = sv_mortalcopy(ERRSV);
505 sv_catpvs(exsv, "\t...propagated");
508 exsv = newSVpvs_flags("Died", SVs_TEMP);
516 Perl_tied_method(pTHX_ const char *const methname, SV **sp, SV *const sv,
517 const MAGIC *const mg, const U32 flags, U32 argc, ...)
522 PERL_ARGS_ASSERT_TIED_METHOD;
524 /* Ensure that our flag bits do not overlap. */
525 assert((TIED_METHOD_MORTALIZE_NOT_NEEDED & G_WANT) == 0);
526 assert((TIED_METHOD_ARGUMENTS_ON_STACK & G_WANT) == 0);
527 assert((TIED_METHOD_SAY & G_WANT) == 0);
529 PUTBACK; /* sp is at *foot* of args, so this pops args from old stack */
530 PUSHSTACKi(PERLSI_MAGIC);
531 EXTEND(SP, argc+1); /* object + args */
533 PUSHs(SvTIED_obj(sv, mg));
534 if (flags & TIED_METHOD_ARGUMENTS_ON_STACK) {
535 Copy(orig_sp + 2, sp + 1, argc, SV*); /* copy args to new stack */
539 const U32 mortalize_not_needed
540 = flags & TIED_METHOD_MORTALIZE_NOT_NEEDED;
542 va_start(args, argc);
544 SV *const arg = va_arg(args, SV *);
545 if(mortalize_not_needed)
554 ENTER_with_name("call_tied_method");
555 if (flags & TIED_METHOD_SAY) {
556 /* local $\ = "\n" */
557 SAVEGENERICSV(PL_ors_sv);
558 PL_ors_sv = newSVpvs("\n");
560 ret_args = call_method(methname, flags & G_WANT);
565 if (ret_args) { /* copy results back to original stack */
566 EXTEND(sp, ret_args);
567 Copy(orig_sp - ret_args + 1, sp + 1, ret_args, SV*);
571 LEAVE_with_name("call_tied_method");
575 #define tied_method0(a,b,c,d) \
576 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,0)
577 #define tied_method1(a,b,c,d,e) \
578 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,1,e)
579 #define tied_method2(a,b,c,d,e,f) \
580 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,2,e,f)
593 GV * const gv = MUTABLE_GV(*++MARK);
595 if (!isGV(gv) && !(SvTYPE(gv) == SVt_PVLV && isGV_with_GP(gv)))
596 DIE(aTHX_ PL_no_usym, "filehandle");
598 if ((io = GvIOp(gv))) {
600 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
603 Perl_ck_warner_d(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
604 "Opening dirhandle %"HEKf" also as a file",
605 HEKfARG(GvENAME_HEK(gv)));
607 mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
609 /* Method's args are same as ours ... */
610 /* ... except handle is replaced by the object */
611 return Perl_tied_method(aTHX_ "OPEN", mark - 1, MUTABLE_SV(io), mg,
612 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
624 tmps = SvPV_const(sv, len);
625 ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, NULL, MARK+1, (SP-MARK));
628 PUSHi( (I32)PL_forkprocess );
629 else if (PL_forkprocess == 0) /* we are a new child */
640 MAXARG == 0 || (!TOPs && !POPs) ? PL_defoutgv : MUTABLE_GV(POPs);
646 IO * const io = GvIO(gv);
648 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
650 return tied_method0("CLOSE", SP, MUTABLE_SV(io), mg);
654 PUSHs(boolSV(do_close(gv, TRUE)));
667 GV * const wgv = MUTABLE_GV(POPs);
668 GV * const rgv = MUTABLE_GV(POPs);
673 if (!isGV_with_GP(rgv) || !isGV_with_GP(wgv))
674 DIE(aTHX_ PL_no_usym, "filehandle");
679 do_close(rgv, FALSE);
681 do_close(wgv, FALSE);
683 if (PerlProc_pipe(fd) < 0)
686 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
687 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
688 IoOFP(rstio) = IoIFP(rstio);
689 IoIFP(wstio) = IoOFP(wstio);
690 IoTYPE(rstio) = IoTYPE_RDONLY;
691 IoTYPE(wstio) = IoTYPE_WRONLY;
693 if (!IoIFP(rstio) || !IoOFP(wstio)) {
695 PerlIO_close(IoIFP(rstio));
697 PerlLIO_close(fd[0]);
699 PerlIO_close(IoOFP(wstio));
701 PerlLIO_close(fd[1]);
704 #if defined(HAS_FCNTL) && defined(F_SETFD)
705 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
706 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
713 DIE(aTHX_ PL_no_func, "pipe");
727 gv = MUTABLE_GV(POPs);
731 && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar)))
733 return tied_method0("FILENO", SP, MUTABLE_SV(io), mg);
736 if (!io || !(fp = IoIFP(io))) {
737 /* Can't do this because people seem to do things like
738 defined(fileno($foo)) to check whether $foo is a valid fh.
745 PUSHi(PerlIO_fileno(fp));
757 if (MAXARG < 1 || (!TOPs && !POPs)) {
758 anum = PerlLIO_umask(022);
759 /* setting it to 022 between the two calls to umask avoids
760 * to have a window where the umask is set to 0 -- meaning
761 * that another thread could create world-writeable files. */
763 (void)PerlLIO_umask(anum);
766 anum = PerlLIO_umask(POPi);
767 TAINT_PROPER("umask");
770 /* Only DIE if trying to restrict permissions on "user" (self).
771 * Otherwise it's harmless and more useful to just return undef
772 * since 'group' and 'other' concepts probably don't exist here. */
773 if (MAXARG >= 1 && (TOPs||POPs) && (POPi & 0700))
774 DIE(aTHX_ "umask not implemented");
775 XPUSHs(&PL_sv_undef);
794 gv = MUTABLE_GV(POPs);
798 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
800 /* This takes advantage of the implementation of the varargs
801 function, which I don't think that the optimiser will be able to
802 figure out. Although, as it's a static function, in theory it
804 return Perl_tied_method(aTHX_ "BINMODE", SP, MUTABLE_SV(io), mg,
805 G_SCALAR|TIED_METHOD_MORTALIZE_NOT_NEEDED,
806 discp ? 1 : 0, discp);
810 if (!io || !(fp = IoIFP(io))) {
812 SETERRNO(EBADF,RMS_IFI);
819 const char *d = NULL;
822 d = SvPV_const(discp, len);
823 mode = mode_from_discipline(d, len);
824 if (PerlIO_binmode(aTHX_ fp, IoTYPE(io), mode, d)) {
825 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
826 if (!PerlIO_binmode(aTHX_ IoOFP(io), IoTYPE(io), mode, d)) {
847 const I32 markoff = MARK - PL_stack_base;
848 const char *methname;
849 int how = PERL_MAGIC_tied;
853 switch(SvTYPE(varsv)) {
855 methname = "TIEHASH";
856 HvEITER_set(MUTABLE_HV(varsv), 0);
859 methname = "TIEARRAY";
860 if (!AvREAL(varsv)) {
862 Perl_croak(aTHX_ "Cannot tie unreifiable array");
863 av_clear((AV *)varsv);
870 if (isGV_with_GP(varsv) && !SvFAKE(varsv)) {
871 methname = "TIEHANDLE";
872 how = PERL_MAGIC_tiedscalar;
873 /* For tied filehandles, we apply tiedscalar magic to the IO
874 slot of the GP rather than the GV itself. AMS 20010812 */
876 GvIOp(varsv) = newIO();
877 varsv = MUTABLE_SV(GvIOp(varsv));
882 methname = "TIESCALAR";
883 how = PERL_MAGIC_tiedscalar;
887 if (sv_isobject(*MARK)) { /* Calls GET magic. */
888 ENTER_with_name("call_TIE");
889 PUSHSTACKi(PERLSI_MAGIC);
891 EXTEND(SP,(I32)items);
895 call_method(methname, G_SCALAR);
898 /* Can't use call_method here, else this: fileno FOO; tie @a, "FOO"
899 * will attempt to invoke IO::File::TIEARRAY, with (best case) the
900 * wrong error message, and worse case, supreme action at a distance.
901 * (Sorry obfuscation writers. You're not going to be given this one.)
903 stash = gv_stashsv(*MARK, 0);
904 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
905 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
906 methname, SVfARG(SvOK(*MARK) ? *MARK : &PL_sv_no));
908 ENTER_with_name("call_TIE");
909 PUSHSTACKi(PERLSI_MAGIC);
911 EXTEND(SP,(I32)items);
915 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
921 if (sv_isobject(sv)) {
922 sv_unmagic(varsv, how);
923 /* Croak if a self-tie on an aggregate is attempted. */
924 if (varsv == SvRV(sv) &&
925 (SvTYPE(varsv) == SVt_PVAV ||
926 SvTYPE(varsv) == SVt_PVHV))
928 "Self-ties of arrays and hashes are not supported");
929 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
931 LEAVE_with_name("call_TIE");
932 SP = PL_stack_base + markoff;
942 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
943 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
945 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
948 if ((mg = SvTIED_mg(sv, how))) {
949 SV * const obj = SvRV(SvTIED_obj(sv, mg));
951 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
953 if (gv && isGV(gv) && (cv = GvCV(gv))) {
955 PUSHs(SvTIED_obj(MUTABLE_SV(gv), mg));
956 mXPUSHi(SvREFCNT(obj) - 1);
958 ENTER_with_name("call_UNTIE");
959 call_sv(MUTABLE_SV(cv), G_VOID);
960 LEAVE_with_name("call_UNTIE");
963 else if (mg && SvREFCNT(obj) > 1) {
964 Perl_ck_warner(aTHX_ packWARN(WARN_UNTIE),
965 "untie attempted while %"UVuf" inner references still exist",
966 (UV)SvREFCNT(obj) - 1 ) ;
970 sv_unmagic(sv, how) ;
980 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
981 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
983 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
986 if ((mg = SvTIED_mg(sv, how))) {
987 PUSHs(SvTIED_obj(sv, mg));
1000 HV * const hv = MUTABLE_HV(POPs);
1001 SV * const sv = newSVpvs_flags("AnyDBM_File", SVs_TEMP);
1002 stash = gv_stashsv(sv, 0);
1003 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
1005 require_pv("AnyDBM_File.pm");
1007 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH")))
1008 DIE(aTHX_ "No dbm on this machine");
1018 mPUSHu(O_RDWR|O_CREAT);
1022 if (!SvOK(right)) right = &PL_sv_no;
1026 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
1029 if (!sv_isobject(TOPs)) {
1037 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
1041 if (sv_isobject(TOPs)) {
1042 sv_unmagic(MUTABLE_SV(hv), PERL_MAGIC_tied);
1043 sv_magic(MUTABLE_SV(hv), TOPs, PERL_MAGIC_tied, NULL, 0);
1060 struct timeval timebuf;
1061 struct timeval *tbuf = &timebuf;
1064 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1069 # if BYTEORDER & 0xf0000
1070 # define ORDERBYTE (0x88888888 - BYTEORDER)
1072 # define ORDERBYTE (0x4444 - BYTEORDER)
1078 for (i = 1; i <= 3; i++) {
1079 SV * const sv = SP[i];
1083 if (SvREADONLY(sv)) {
1085 sv_force_normal_flags(sv, 0);
1086 if (SvREADONLY(sv) && !(SvPOK(sv) && SvCUR(sv) == 0))
1087 Perl_croak_no_modify(aTHX);
1091 Perl_ck_warner(aTHX_ packWARN(WARN_MISC),
1092 "Non-string passed as bitmask");
1093 SvPV_force_nomg_nolen(sv); /* force string conversion */
1100 /* little endians can use vecs directly */
1101 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1108 masksize = NFDBITS / NBBY;
1110 masksize = sizeof(long); /* documented int, everyone seems to use long */
1112 Zero(&fd_sets[0], 4, char*);
1115 # if SELECT_MIN_BITS == 1
1116 growsize = sizeof(fd_set);
1118 # if defined(__GLIBC__) && defined(__FD_SETSIZE)
1119 # undef SELECT_MIN_BITS
1120 # define SELECT_MIN_BITS __FD_SETSIZE
1122 /* If SELECT_MIN_BITS is greater than one we most probably will want
1123 * to align the sizes with SELECT_MIN_BITS/8 because for example
1124 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
1125 * UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
1126 * on (sets/tests/clears bits) is 32 bits. */
1127 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
1135 timebuf.tv_sec = (long)value;
1136 value -= (NV)timebuf.tv_sec;
1137 timebuf.tv_usec = (long)(value * 1000000.0);
1142 for (i = 1; i <= 3; i++) {
1144 if (!SvOK(sv) || SvCUR(sv) == 0) {
1151 Sv_Grow(sv, growsize);
1155 while (++j <= growsize) {
1159 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1161 Newx(fd_sets[i], growsize, char);
1162 for (offset = 0; offset < growsize; offset += masksize) {
1163 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1164 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1167 fd_sets[i] = SvPVX(sv);
1171 #ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1172 /* Can't make just the (void*) conditional because that would be
1173 * cpp #if within cpp macro, and not all compilers like that. */
1174 nfound = PerlSock_select(
1176 (Select_fd_set_t) fd_sets[1],
1177 (Select_fd_set_t) fd_sets[2],
1178 (Select_fd_set_t) fd_sets[3],
1179 (void*) tbuf); /* Workaround for compiler bug. */
1181 nfound = PerlSock_select(
1183 (Select_fd_set_t) fd_sets[1],
1184 (Select_fd_set_t) fd_sets[2],
1185 (Select_fd_set_t) fd_sets[3],
1188 for (i = 1; i <= 3; i++) {
1191 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1193 for (offset = 0; offset < growsize; offset += masksize) {
1194 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1195 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1197 Safefree(fd_sets[i]);
1204 if (GIMME == G_ARRAY && tbuf) {
1205 value = (NV)(timebuf.tv_sec) +
1206 (NV)(timebuf.tv_usec) / 1000000.0;
1211 DIE(aTHX_ "select not implemented");
1216 =for apidoc setdefout
1218 Sets PL_defoutgv, the default file handle for output, to the passed in
1219 typeglob. As PL_defoutgv "owns" a reference on its typeglob, the reference
1220 count of the passed in typeglob is increased by one, and the reference count
1221 of the typeglob that PL_defoutgv points to is decreased by one.
1227 Perl_setdefout(pTHX_ GV *gv)
1230 SvREFCNT_inc_simple_void(gv);
1231 SvREFCNT_dec(PL_defoutgv);
1239 GV * const newdefout = (PL_op->op_private > 0) ? (MUTABLE_GV(POPs)) : NULL;
1240 GV * egv = GvEGVx(PL_defoutgv);
1245 hv = isGV_with_GP(egv) ? GvSTASH(egv) : NULL;
1246 gvp = hv && HvENAME(hv)
1247 ? (GV**)hv_fetch(hv, GvNAME(egv), HEK_UTF8(GvNAME_HEK(egv)) ? -GvNAMELEN(egv) : GvNAMELEN(egv), FALSE)
1249 if (gvp && *gvp == egv) {
1250 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
1254 mXPUSHs(newRV(MUTABLE_SV(egv)));
1258 if (!GvIO(newdefout))
1259 gv_IOadd(newdefout);
1260 setdefout(newdefout);
1270 MAXARG==0 || (!TOPs && !POPs) ? PL_stdingv : MUTABLE_GV(POPs);
1271 IO *const io = GvIO(gv);
1277 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1279 const U32 gimme = GIMME_V;
1280 Perl_tied_method(aTHX_ "GETC", SP, MUTABLE_SV(io), mg, gimme, 0);
1281 if (gimme == G_SCALAR) {
1283 SvSetMagicSV_nosteal(TARG, TOPs);
1288 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
1289 if (!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
1291 SETERRNO(EBADF,RMS_IFI);
1295 sv_setpvs(TARG, " ");
1296 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
1297 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1298 /* Find out how many bytes the char needs */
1299 Size_t len = UTF8SKIP(SvPVX_const(TARG));
1302 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1303 SvCUR_set(TARG,1+len);
1312 S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
1315 register PERL_CONTEXT *cx;
1316 const I32 gimme = GIMME_V;
1318 PERL_ARGS_ASSERT_DOFORM;
1320 if (cv && CvCLONE(cv))
1321 cv = MUTABLE_CV(sv_2mortal(MUTABLE_SV(cv_clone(cv))));
1326 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
1327 PUSHFORMAT(cx, retop);
1329 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), 1);
1331 setdefout(gv); /* locally select filehandle so $% et al work */
1350 gv = MUTABLE_GV(POPs);
1364 goto not_a_format_reference;
1368 tmpsv = sv_newmortal();
1369 gv_efullname4(tmpsv, fgv, NULL, FALSE);
1370 if (SvPOK(tmpsv) && *SvPV_nolen_const(tmpsv))
1371 DIE(aTHX_ "Undefined format \"%"SVf"\" called", SVfARG(tmpsv));
1373 not_a_format_reference:
1374 DIE(aTHX_ "Not a format reference");
1376 IoFLAGS(io) &= ~IOf_DIDTOP;
1377 return doform(cv,gv,PL_op->op_next);
1383 GV * const gv = cxstack[cxstack_ix].blk_format.gv;
1384 register IO * const io = GvIOp(gv);
1389 register PERL_CONTEXT *cx;
1392 if (!io || !(ofp = IoOFP(io)))
1395 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
1396 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
1398 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1399 PL_formtarget != PL_toptarget)
1403 if (!IoTOP_GV(io)) {
1406 if (!IoTOP_NAME(io)) {
1408 if (!IoFMT_NAME(io))
1409 IoFMT_NAME(io) = savepv(GvNAME(gv));
1410 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%"HEKf"_TOP",
1411 HEKfARG(GvNAME_HEK(gv))));
1412 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
1413 if ((topgv && GvFORM(topgv)) ||
1414 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
1415 IoTOP_NAME(io) = savesvpv(topname);
1417 IoTOP_NAME(io) = savepvs("top");
1419 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
1420 if (!topgv || !GvFORM(topgv)) {
1421 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1424 IoTOP_GV(io) = topgv;
1426 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1427 I32 lines = IoLINES_LEFT(io);
1428 const char *s = SvPVX_const(PL_formtarget);
1429 if (lines <= 0) /* Yow, header didn't even fit!!! */
1431 while (lines-- > 0) {
1432 s = strchr(s, '\n');
1438 const STRLEN save = SvCUR(PL_formtarget);
1439 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
1440 do_print(PL_formtarget, ofp);
1441 SvCUR_set(PL_formtarget, save);
1442 sv_chop(PL_formtarget, s);
1443 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
1446 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
1447 do_print(PL_formfeed, ofp);
1448 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1450 PL_formtarget = PL_toptarget;
1451 IoFLAGS(io) |= IOf_DIDTOP;
1454 DIE(aTHX_ "bad top format reference");
1457 SV * const sv = sv_newmortal();
1458 gv_efullname4(sv, fgv, NULL, FALSE);
1459 if (SvPOK(sv) && *SvPV_nolen_const(sv))
1460 DIE(aTHX_ "Undefined top format \"%"SVf"\" called", SVfARG(sv));
1462 DIE(aTHX_ "Undefined top format called");
1464 return doform(cv, gv, PL_op);
1468 POPBLOCK(cx,PL_curpm);
1470 retop = cx->blk_sub.retop;
1476 report_wrongway_fh(gv, '<');
1482 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
1483 Perl_ck_warner(aTHX_ packWARN(WARN_IO), "page overflow");
1485 if (!do_print(PL_formtarget, fp))
1488 FmLINES(PL_formtarget) = 0;
1489 SvCUR_set(PL_formtarget, 0);
1490 *SvEND(PL_formtarget) = '\0';
1491 if (IoFLAGS(io) & IOf_FLUSH)
1492 (void)PerlIO_flush(fp);
1497 PL_formtarget = PL_bodytarget;
1499 PERL_UNUSED_VAR(newsp);
1500 PERL_UNUSED_VAR(gimme);
1506 dVAR; dSP; dMARK; dORIGMARK;
1511 = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv;
1512 IO *const io = GvIO(gv);
1515 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1517 if (MARK == ORIGMARK) {
1520 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1523 return Perl_tied_method(aTHX_ "PRINTF", mark - 1, MUTABLE_SV(io),
1525 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1533 SETERRNO(EBADF,RMS_IFI);
1536 else if (!(fp = IoOFP(io))) {
1538 report_wrongway_fh(gv, '<');
1539 else if (ckWARN(WARN_CLOSED))
1541 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
1545 do_sprintf(sv, SP - MARK, MARK + 1);
1546 if (!do_print(sv, fp))
1549 if (IoFLAGS(io) & IOf_FLUSH)
1550 if (PerlIO_flush(fp) == EOF)
1561 PUSHs(&PL_sv_undef);
1569 const int perm = (MAXARG > 3 && (TOPs || POPs)) ? POPi : 0666;
1570 const int mode = POPi;
1571 SV * const sv = POPs;
1572 GV * const gv = MUTABLE_GV(POPs);
1575 /* Need TIEHANDLE method ? */
1576 const char * const tmps = SvPV_const(sv, len);
1577 /* FIXME? do_open should do const */
1578 if (do_open(gv, tmps, len, TRUE, mode, perm, NULL)) {
1579 IoLINES(GvIOp(gv)) = 0;
1583 PUSHs(&PL_sv_undef);
1590 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
1604 bool charstart = FALSE;
1605 STRLEN charskip = 0;
1608 GV * const gv = MUTABLE_GV(*++MARK);
1609 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1610 && gv && (io = GvIO(gv)) )
1612 const MAGIC *const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1614 return Perl_tied_method(aTHX_ "READ", mark - 1, MUTABLE_SV(io), mg,
1615 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1624 sv_setpvs(bufsv, "");
1625 length = SvIVx(*++MARK);
1628 offset = SvIVx(*++MARK);
1632 if (!io || !IoIFP(io)) {
1634 SETERRNO(EBADF,RMS_IFI);
1637 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
1638 buffer = SvPVutf8_force(bufsv, blen);
1639 /* UTF-8 may not have been set if they are all low bytes */
1644 buffer = SvPV_force(bufsv, blen);
1645 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
1648 DIE(aTHX_ "Negative length");
1656 if (PL_op->op_type == OP_RECV) {
1657 Sock_size_t bufsize;
1658 char namebuf[MAXPATHLEN];
1659 #if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
1660 bufsize = sizeof (struct sockaddr_in);
1662 bufsize = sizeof namebuf;
1664 #ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1668 buffer = SvGROW(bufsv, (STRLEN)(length+1));
1669 /* 'offset' means 'flags' here */
1670 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
1671 (struct sockaddr *)namebuf, &bufsize);
1674 /* MSG_TRUNC can give oversized count; quietly lose it */
1678 /* Bogus return without padding */
1679 bufsize = sizeof (struct sockaddr_in);
1681 SvCUR_set(bufsv, count);
1682 *SvEND(bufsv) = '\0';
1683 (void)SvPOK_only(bufsv);
1687 /* This should not be marked tainted if the fp is marked clean */
1688 if (!(IoFLAGS(io) & IOf_UNTAINT))
1689 SvTAINTED_on(bufsv);
1691 sv_setpvn(TARG, namebuf, bufsize);
1696 if (DO_UTF8(bufsv)) {
1697 /* offset adjust in characters not bytes */
1698 blen = sv_len_utf8(bufsv);
1701 if (-offset > (SSize_t)blen)
1702 DIE(aTHX_ "Offset outside string");
1705 if (DO_UTF8(bufsv)) {
1706 /* convert offset-as-chars to offset-as-bytes */
1707 if (offset >= (int)blen)
1708 offset += SvCUR(bufsv) - blen;
1710 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
1713 orig_size = SvCUR(bufsv);
1714 /* Allocating length + offset + 1 isn't perfect in the case of reading
1715 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1717 (should be 2 * length + offset + 1, or possibly something longer if
1718 PL_encoding is true) */
1719 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
1720 if (offset > 0 && offset > (SSize_t)orig_size) { /* Zero any newly allocated space */
1721 Zero(buffer+orig_size, offset-orig_size, char);
1723 buffer = buffer + offset;
1725 read_target = bufsv;
1727 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1728 concatenate it to the current buffer. */
1730 /* Truncate the existing buffer to the start of where we will be
1732 SvCUR_set(bufsv, offset);
1734 read_target = sv_newmortal();
1735 SvUPGRADE(read_target, SVt_PV);
1736 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1739 if (PL_op->op_type == OP_SYSREAD) {
1740 #ifdef PERL_SOCK_SYSREAD_IS_RECV
1741 if (IoTYPE(io) == IoTYPE_SOCKET) {
1742 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1748 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1753 #ifdef HAS_SOCKET__bad_code_maybe
1754 if (IoTYPE(io) == IoTYPE_SOCKET) {
1755 Sock_size_t bufsize;
1756 char namebuf[MAXPATHLEN];
1757 #if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1758 bufsize = sizeof (struct sockaddr_in);
1760 bufsize = sizeof namebuf;
1762 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
1763 (struct sockaddr *)namebuf, &bufsize);
1768 count = PerlIO_read(IoIFP(io), buffer, length);
1769 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1770 if (count == 0 && PerlIO_error(IoIFP(io)))
1774 if (IoTYPE(io) == IoTYPE_WRONLY)
1775 report_wrongway_fh(gv, '>');
1778 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1779 *SvEND(read_target) = '\0';
1780 (void)SvPOK_only(read_target);
1781 if (fp_utf8 && !IN_BYTES) {
1782 /* Look at utf8 we got back and count the characters */
1783 const char *bend = buffer + count;
1784 while (buffer < bend) {
1786 skip = UTF8SKIP(buffer);
1789 if (buffer - charskip + skip > bend) {
1790 /* partial character - try for rest of it */
1791 length = skip - (bend-buffer);
1792 offset = bend - SvPVX_const(bufsv);
1804 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1805 provided amount read (count) was what was requested (length)
1807 if (got < wanted && count == length) {
1808 length = wanted - got;
1809 offset = bend - SvPVX_const(bufsv);
1812 /* return value is character count */
1816 else if (buffer_utf8) {
1817 /* Let svcatsv upgrade the bytes we read in to utf8.
1818 The buffer is a mortal so will be freed soon. */
1819 sv_catsv_nomg(bufsv, read_target);
1822 /* This should not be marked tainted if the fp is marked clean */
1823 if (!(IoFLAGS(io) & IOf_UNTAINT))
1824 SvTAINTED_on(bufsv);
1836 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
1841 STRLEN orig_blen_bytes;
1842 const int op_type = PL_op->op_type;
1845 GV *const gv = MUTABLE_GV(*++MARK);
1846 IO *const io = GvIO(gv);
1848 if (op_type == OP_SYSWRITE && io) {
1849 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1851 if (MARK == SP - 1) {
1853 mXPUSHi(sv_len(sv));
1857 return Perl_tied_method(aTHX_ "WRITE", mark - 1, MUTABLE_SV(io), mg,
1858 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1868 if (!io || !IoIFP(io) || IoTYPE(io) == IoTYPE_RDONLY) {
1870 if (io && IoIFP(io))
1871 report_wrongway_fh(gv, '<');
1874 SETERRNO(EBADF,RMS_IFI);
1878 /* Do this first to trigger any overloading. */
1879 buffer = SvPV_const(bufsv, blen);
1880 orig_blen_bytes = blen;
1881 doing_utf8 = DO_UTF8(bufsv);
1883 if (PerlIO_isutf8(IoIFP(io))) {
1884 if (!SvUTF8(bufsv)) {
1885 /* We don't modify the original scalar. */
1886 tmpbuf = bytes_to_utf8((const U8*) buffer, &blen);
1887 buffer = (char *) tmpbuf;
1891 else if (doing_utf8) {
1892 STRLEN tmplen = blen;
1893 U8 * const result = bytes_from_utf8((const U8*) buffer, &tmplen, &doing_utf8);
1896 buffer = (char *) tmpbuf;
1900 assert((char *)result == buffer);
1901 Perl_croak(aTHX_ "Wide character in %s", OP_DESC(PL_op));
1906 if (op_type == OP_SEND) {
1907 const int flags = SvIVx(*++MARK);
1910 char * const sockbuf = SvPVx(*++MARK, mlen);
1911 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1912 flags, (struct sockaddr *)sockbuf, mlen);
1916 = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, flags);
1922 Size_t length = 0; /* This length is in characters. */
1928 /* The SV is bytes, and we've had to upgrade it. */
1929 blen_chars = orig_blen_bytes;
1931 /* The SV really is UTF-8. */
1932 if (SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
1933 /* Don't call sv_len_utf8 again because it will call magic
1934 or overloading a second time, and we might get back a
1935 different result. */
1936 blen_chars = utf8_length((U8*)buffer, (U8*)buffer + blen);
1938 /* It's safe, and it may well be cached. */
1939 blen_chars = sv_len_utf8(bufsv);
1947 length = blen_chars;
1949 #if Size_t_size > IVSIZE
1950 length = (Size_t)SvNVx(*++MARK);
1952 length = (Size_t)SvIVx(*++MARK);
1954 if ((SSize_t)length < 0) {
1956 DIE(aTHX_ "Negative length");
1961 offset = SvIVx(*++MARK);
1963 if (-offset > (IV)blen_chars) {
1965 DIE(aTHX_ "Offset outside string");
1967 offset += blen_chars;
1968 } else if (offset > (IV)blen_chars) {
1970 DIE(aTHX_ "Offset outside string");
1974 if (length > blen_chars - offset)
1975 length = blen_chars - offset;
1977 /* Here we convert length from characters to bytes. */
1978 if (tmpbuf || SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
1979 /* Either we had to convert the SV, or the SV is magical, or
1980 the SV has overloading, in which case we can't or mustn't
1981 or mustn't call it again. */
1983 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
1984 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1986 /* It's a real UTF-8 SV, and it's not going to change under
1987 us. Take advantage of any cache. */
1989 I32 len_I32 = length;
1991 /* Convert the start and end character positions to bytes.
1992 Remember that the second argument to sv_pos_u2b is relative
1994 sv_pos_u2b(bufsv, &start, &len_I32);
2001 buffer = buffer+offset;
2003 #ifdef PERL_SOCK_SYSWRITE_IS_SEND
2004 if (IoTYPE(io) == IoTYPE_SOCKET) {
2005 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
2011 /* See the note at doio.c:do_print about filesize limits. --jhi */
2012 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
2021 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
2024 #if Size_t_size > IVSIZE
2044 * in Perl 5.12 and later, the additional parameter is a bitmask:
2047 * 2 = eof() <- ARGV magic
2049 * I'll rely on the compiler's trace flow analysis to decide whether to
2050 * actually assign this out here, or punt it into the only block where it is
2051 * used. Doing it out here is DRY on the condition logic.
2056 gv = PL_last_in_gv = MUTABLE_GV(POPs); /* eof(FH) */
2062 if (PL_op->op_flags & OPf_SPECIAL) {
2063 gv = PL_last_in_gv = GvEGVx(PL_argvgv); /* eof() - ARGV magic */
2067 gv = PL_last_in_gv; /* eof */
2075 if ((io = GvIO(gv)) && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) {
2076 return tied_method1("EOF", SP, MUTABLE_SV(io), mg, newSVuv(which));
2079 if (!MAXARG && (PL_op->op_flags & OPf_SPECIAL)) { /* eof() */
2080 if (io && !IoIFP(io)) {
2081 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
2083 IoFLAGS(io) &= ~IOf_START;
2084 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, NULL);
2086 sv_setpvs(GvSV(gv), "-");
2088 GvSV(gv) = newSVpvs("-");
2089 SvSETMAGIC(GvSV(gv));
2091 else if (!nextargv(gv))
2096 PUSHs(boolSV(do_eof(gv)));
2106 if (MAXARG != 0 && (TOPs || POPs))
2107 PL_last_in_gv = MUTABLE_GV(POPs);
2114 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
2116 return tied_method0("TELL", SP, MUTABLE_SV(io), mg);
2121 SETERRNO(EBADF,RMS_IFI);
2126 #if LSEEKSIZE > IVSIZE
2127 PUSHn( do_tell(gv) );
2129 PUSHi( do_tell(gv) );
2137 const int whence = POPi;
2138 #if LSEEKSIZE > IVSIZE
2139 const Off_t offset = (Off_t)SvNVx(POPs);
2141 const Off_t offset = (Off_t)SvIVx(POPs);
2144 GV * const gv = PL_last_in_gv = MUTABLE_GV(POPs);
2145 IO *const io = GvIO(gv);
2148 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
2150 #if LSEEKSIZE > IVSIZE
2151 SV *const offset_sv = newSVnv((NV) offset);
2153 SV *const offset_sv = newSViv(offset);
2156 return tied_method2("SEEK", SP, MUTABLE_SV(io), mg, offset_sv,
2161 if (PL_op->op_type == OP_SEEK)
2162 PUSHs(boolSV(do_seek(gv, offset, whence)));
2164 const Off_t sought = do_sysseek(gv, offset, whence);
2166 PUSHs(&PL_sv_undef);
2168 SV* const sv = sought ?
2169 #if LSEEKSIZE > IVSIZE
2174 : newSVpvn(zero_but_true, ZBTLEN);
2185 /* There seems to be no consensus on the length type of truncate()
2186 * and ftruncate(), both off_t and size_t have supporters. In
2187 * general one would think that when using large files, off_t is
2188 * at least as wide as size_t, so using an off_t should be okay. */
2189 /* XXX Configure probe for the length type of *truncate() needed XXX */
2192 #if Off_t_size > IVSIZE
2197 /* Checking for length < 0 is problematic as the type might or
2198 * might not be signed: if it is not, clever compilers will moan. */
2199 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
2202 SV * const sv = POPs;
2207 if ((tmpgv = PL_op->op_flags & OPf_SPECIAL
2208 ? gv_fetchsv(sv, 0, SVt_PVIO)
2209 : MAYBE_DEREF_GV(sv) )) {
2216 TAINT_PROPER("truncate");
2217 if (!(fp = IoIFP(io))) {
2223 if (ftruncate(PerlIO_fileno(fp), len) < 0)
2225 if (my_chsize(PerlIO_fileno(fp), len) < 0)
2231 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2232 io = MUTABLE_IO(SvRV(sv)); /* *main::FRED{IO} for example */
2233 goto do_ftruncate_io;
2236 const char * const name = SvPV_nomg_const_nolen(sv);
2237 TAINT_PROPER("truncate");
2239 if (truncate(name, len) < 0)
2243 const int tmpfd = PerlLIO_open(name, O_RDWR);
2248 if (my_chsize(tmpfd, len) < 0)
2250 PerlLIO_close(tmpfd);
2259 SETERRNO(EBADF,RMS_IFI);
2267 SV * const argsv = POPs;
2268 const unsigned int func = POPu;
2269 const int optype = PL_op->op_type;
2270 GV * const gv = MUTABLE_GV(POPs);
2271 IO * const io = gv ? GvIOn(gv) : NULL;
2275 if (!io || !argsv || !IoIFP(io)) {
2277 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
2281 if (SvPOK(argsv) || !SvNIOK(argsv)) {
2284 s = SvPV_force(argsv, len);
2285 need = IOCPARM_LEN(func);
2287 s = Sv_Grow(argsv, need + 1);
2288 SvCUR_set(argsv, need);
2291 s[SvCUR(argsv)] = 17; /* a little sanity check here */
2294 retval = SvIV(argsv);
2295 s = INT2PTR(char*,retval); /* ouch */
2298 TAINT_PROPER(PL_op_desc[optype]);
2300 if (optype == OP_IOCTL)
2302 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
2304 DIE(aTHX_ "ioctl is not implemented");
2308 DIE(aTHX_ "fcntl is not implemented");
2310 #if defined(OS2) && defined(__EMX__)
2311 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
2313 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
2317 #if defined(HAS_IOCTL) || defined(HAS_FCNTL)
2319 if (s[SvCUR(argsv)] != 17)
2320 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
2322 s[SvCUR(argsv)] = 0; /* put our null back */
2323 SvSETMAGIC(argsv); /* Assume it has changed */
2332 PUSHp(zero_but_true, ZBTLEN);
2343 const int argtype = POPi;
2344 GV * const gv = (MAXARG == 0) ? PL_last_in_gv : MUTABLE_GV(POPs);
2345 IO *const io = GvIO(gv);
2346 PerlIO *const fp = io ? IoIFP(io) : NULL;
2348 /* XXX Looks to me like io is always NULL at this point */
2350 (void)PerlIO_flush(fp);
2351 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
2356 SETERRNO(EBADF,RMS_IFI);
2361 DIE(aTHX_ PL_no_func, "flock()");
2372 const int protocol = POPi;
2373 const int type = POPi;
2374 const int domain = POPi;
2375 GV * const gv = MUTABLE_GV(POPs);
2376 register IO * const io = gv ? GvIOn(gv) : NULL;
2381 if (io && IoIFP(io))
2382 do_close(gv, FALSE);
2383 SETERRNO(EBADF,LIB_INVARG);
2388 do_close(gv, FALSE);
2390 TAINT_PROPER("socket");
2391 fd = PerlSock_socket(domain, type, protocol);
2394 IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2395 IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
2396 IoTYPE(io) = IoTYPE_SOCKET;
2397 if (!IoIFP(io) || !IoOFP(io)) {
2398 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2399 if (IoOFP(io)) PerlIO_close(IoOFP(io));
2400 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
2403 #if defined(HAS_FCNTL) && defined(F_SETFD)
2404 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2408 setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
2417 #if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
2419 const int protocol = POPi;
2420 const int type = POPi;
2421 const int domain = POPi;
2422 GV * const gv2 = MUTABLE_GV(POPs);
2423 GV * const gv1 = MUTABLE_GV(POPs);
2424 register IO * const io1 = gv1 ? GvIOn(gv1) : NULL;
2425 register IO * const io2 = gv2 ? GvIOn(gv2) : NULL;
2429 report_evil_fh(gv1);
2431 report_evil_fh(gv2);
2433 if (io1 && IoIFP(io1))
2434 do_close(gv1, FALSE);
2435 if (io2 && IoIFP(io2))
2436 do_close(gv2, FALSE);
2441 TAINT_PROPER("socketpair");
2442 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
2444 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2445 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
2446 IoTYPE(io1) = IoTYPE_SOCKET;
2447 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2448 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
2449 IoTYPE(io2) = IoTYPE_SOCKET;
2450 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
2451 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2452 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
2453 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
2454 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2455 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
2456 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
2459 #if defined(HAS_FCNTL) && defined(F_SETFD)
2460 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2461 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2466 DIE(aTHX_ PL_no_sock_func, "socketpair");
2475 SV * const addrsv = POPs;
2476 /* OK, so on what platform does bind modify addr? */
2478 GV * const gv = MUTABLE_GV(POPs);
2479 register IO * const io = GvIOn(gv);
2481 const int op_type = PL_op->op_type;
2483 if (!io || !IoIFP(io))
2486 addr = SvPV_const(addrsv, len);
2487 TAINT_PROPER(PL_op_desc[op_type]);
2488 if ((op_type == OP_BIND
2489 ? PerlSock_bind(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len)
2490 : PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len))
2498 SETERRNO(EBADF,SS_IVCHAN);
2505 const int backlog = POPi;
2506 GV * const gv = MUTABLE_GV(POPs);
2507 register IO * const io = gv ? GvIOn(gv) : NULL;
2509 if (!io || !IoIFP(io))
2512 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
2519 SETERRNO(EBADF,SS_IVCHAN);
2528 char namebuf[MAXPATHLEN];
2529 #if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
2530 Sock_size_t len = sizeof (struct sockaddr_in);
2532 Sock_size_t len = sizeof namebuf;
2534 GV * const ggv = MUTABLE_GV(POPs);
2535 GV * const ngv = MUTABLE_GV(POPs);
2544 if (!gstio || !IoIFP(gstio))
2548 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
2551 /* Some platforms indicate zero length when an AF_UNIX client is
2552 * not bound. Simulate a non-zero-length sockaddr structure in
2554 namebuf[0] = 0; /* sun_len */
2555 namebuf[1] = AF_UNIX; /* sun_family */
2563 do_close(ngv, FALSE);
2564 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2565 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
2566 IoTYPE(nstio) = IoTYPE_SOCKET;
2567 if (!IoIFP(nstio) || !IoOFP(nstio)) {
2568 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2569 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
2570 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
2573 #if defined(HAS_FCNTL) && defined(F_SETFD)
2574 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2578 len = sizeof (struct sockaddr_in); /* EPOC somehow truncates info */
2579 setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
2581 #ifdef __SCO_VERSION__
2582 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
2585 PUSHp(namebuf, len);
2589 report_evil_fh(ggv);
2590 SETERRNO(EBADF,SS_IVCHAN);
2600 const int how = POPi;
2601 GV * const gv = MUTABLE_GV(POPs);
2602 register IO * const io = GvIOn(gv);
2604 if (!io || !IoIFP(io))
2607 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
2612 SETERRNO(EBADF,SS_IVCHAN);
2619 const int optype = PL_op->op_type;
2620 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
2621 const unsigned int optname = (unsigned int) POPi;
2622 const unsigned int lvl = (unsigned int) POPi;
2623 GV * const gv = MUTABLE_GV(POPs);
2624 register IO * const io = GvIOn(gv);
2628 if (!io || !IoIFP(io))
2631 fd = PerlIO_fileno(IoIFP(io));
2635 (void)SvPOK_only(sv);
2639 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
2646 #if defined(__SYMBIAN32__)
2647 # define SETSOCKOPT_OPTION_VALUE_T void *
2649 # define SETSOCKOPT_OPTION_VALUE_T const char *
2651 /* XXX TODO: We need to have a proper type (a Configure probe,
2652 * etc.) for what the C headers think of the third argument of
2653 * setsockopt(), the option_value read-only buffer: is it
2654 * a "char *", or a "void *", const or not. Some compilers
2655 * don't take kindly to e.g. assuming that "char *" implicitly
2656 * promotes to a "void *", or to explicitly promoting/demoting
2657 * consts to non/vice versa. The "const void *" is the SUS
2658 * definition, but that does not fly everywhere for the above
2660 SETSOCKOPT_OPTION_VALUE_T buf;
2664 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2668 aint = (int)SvIV(sv);
2669 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
2672 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
2682 SETERRNO(EBADF,SS_IVCHAN);
2691 const int optype = PL_op->op_type;
2692 GV * const gv = MUTABLE_GV(POPs);
2693 register IO * const io = GvIOn(gv);
2698 if (!io || !IoIFP(io))
2701 sv = sv_2mortal(newSV(257));
2702 (void)SvPOK_only(sv);
2706 fd = PerlIO_fileno(IoIFP(io));
2708 case OP_GETSOCKNAME:
2709 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2712 case OP_GETPEERNAME:
2713 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2715 #if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2717 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";
2718 /* If the call succeeded, make sure we don't have a zeroed port/addr */
2719 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2720 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
2721 sizeof(u_short) + sizeof(struct in_addr))) {
2728 #ifdef BOGUS_GETNAME_RETURN
2729 /* Interactive Unix, getpeername() and getsockname()
2730 does not return valid namelen */
2731 if (len == BOGUS_GETNAME_RETURN)
2732 len = sizeof(struct sockaddr);
2741 SETERRNO(EBADF,SS_IVCHAN);
2760 if (PL_op->op_flags & OPf_REF ? (gv = cGVOP_gv, 1)
2761 : !!(sv=POPs, gv = MAYBE_DEREF_GV(sv))) {
2763 if (PL_op->op_type == OP_LSTAT) {
2764 if (gv != PL_defgv) {
2765 do_fstat_warning_check:
2766 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
2767 "lstat() on filehandle%s%"SVf,
2770 ? sv_2mortal(newSVhek(GvENAME_HEK(gv)))
2772 } else if (PL_laststype != OP_LSTAT)
2773 /* diag_listed_as: The stat preceding %s wasn't an lstat */
2774 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
2778 if (gv != PL_defgv) {
2780 PL_laststype = OP_STAT;
2781 PL_statgv = gv ? gv : (GV *)io;
2782 sv_setpvs(PL_statname, "");
2789 PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
2791 } else if (IoDIRP(io)) {
2793 PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache);
2796 PL_laststatval = -1;
2801 if (PL_laststatval < 0) {
2802 if (!havefp) report_evil_fh(gv);
2807 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2808 io = MUTABLE_IO(SvRV(sv));
2809 if (PL_op->op_type == OP_LSTAT)
2810 goto do_fstat_warning_check;
2811 goto do_fstat_have_io;
2814 sv_setpv(PL_statname, SvPV_nomg_const_nolen(sv));
2816 PL_laststype = PL_op->op_type;
2817 if (PL_op->op_type == OP_LSTAT)
2818 PL_laststatval = PerlLIO_lstat(SvPV_nolen_const(PL_statname), &PL_statcache);
2820 PL_laststatval = PerlLIO_stat(SvPV_nolen_const(PL_statname), &PL_statcache);
2821 if (PL_laststatval < 0) {
2822 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname), '\n'))
2823 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
2829 if (gimme != G_ARRAY) {
2830 if (gimme != G_VOID)
2831 XPUSHs(boolSV(max));
2837 mPUSHi(PL_statcache.st_dev);
2838 #if ST_INO_SIZE > IVSIZE
2839 mPUSHn(PL_statcache.st_ino);
2841 # if ST_INO_SIGN <= 0
2842 mPUSHi(PL_statcache.st_ino);
2844 mPUSHu(PL_statcache.st_ino);
2847 mPUSHu(PL_statcache.st_mode);
2848 mPUSHu(PL_statcache.st_nlink);
2849 #if Uid_t_size > IVSIZE
2850 mPUSHn(PL_statcache.st_uid);
2852 # if Uid_t_sign <= 0
2853 mPUSHi(PL_statcache.st_uid);
2855 mPUSHu(PL_statcache.st_uid);
2858 #if Gid_t_size > IVSIZE
2859 mPUSHn(PL_statcache.st_gid);
2861 # if Gid_t_sign <= 0
2862 mPUSHi(PL_statcache.st_gid);
2864 mPUSHu(PL_statcache.st_gid);
2867 #ifdef USE_STAT_RDEV
2868 mPUSHi(PL_statcache.st_rdev);
2870 PUSHs(newSVpvs_flags("", SVs_TEMP));
2872 #if Off_t_size > IVSIZE
2873 mPUSHn(PL_statcache.st_size);
2875 mPUSHi(PL_statcache.st_size);
2878 mPUSHn(PL_statcache.st_atime);
2879 mPUSHn(PL_statcache.st_mtime);
2880 mPUSHn(PL_statcache.st_ctime);
2882 mPUSHi(PL_statcache.st_atime);
2883 mPUSHi(PL_statcache.st_mtime);
2884 mPUSHi(PL_statcache.st_ctime);
2886 #ifdef USE_STAT_BLOCKS
2887 mPUSHu(PL_statcache.st_blksize);
2888 mPUSHu(PL_statcache.st_blocks);
2890 PUSHs(newSVpvs_flags("", SVs_TEMP));
2891 PUSHs(newSVpvs_flags("", SVs_TEMP));
2897 #define tryAMAGICftest_MG(chr) STMT_START { \
2898 if ( (SvFLAGS(TOPs) & (SVf_ROK|SVs_GMG)) \
2899 && PL_op->op_flags & OPf_KIDS \
2900 && S_try_amagic_ftest(aTHX_ chr)) \
2905 S_try_amagic_ftest(pTHX_ char chr) {
2908 SV* const arg = TOPs;
2915 const char tmpchr = chr;
2916 SV * const tmpsv = amagic_call(arg,
2917 newSVpvn_flags(&tmpchr, 1, SVs_TEMP),
2918 ftest_amg, AMGf_unary);
2925 if (PL_op->op_private & OPpFT_STACKING) {
2927 /* leave the object alone */
2939 /* This macro is used by the stacked filetest operators :
2940 * if the previous filetest failed, short-circuit and pass its value.
2941 * Else, discard it from the stack and continue. --rgs
2943 #define STACKED_FTEST_CHECK if (PL_op->op_private & OPpFT_STACKED) { \
2944 if (!SvTRUE(TOPs)) { RETURN; } \
2945 else { (void)POPs; PUTBACK; } \
2952 /* Not const, because things tweak this below. Not bool, because there's
2953 no guarantee that OPp_FT_ACCESS is <= CHAR_MAX */
2954 #if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2955 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
2956 /* Giving some sort of initial value silences compilers. */
2958 int access_mode = R_OK;
2960 int access_mode = 0;
2963 /* access_mode is never used, but leaving use_access in makes the
2964 conditional compiling below much clearer. */
2967 Mode_t stat_mode = S_IRUSR;
2969 bool effective = FALSE;
2973 switch (PL_op->op_type) {
2974 case OP_FTRREAD: opchar = 'R'; break;
2975 case OP_FTRWRITE: opchar = 'W'; break;
2976 case OP_FTREXEC: opchar = 'X'; break;
2977 case OP_FTEREAD: opchar = 'r'; break;
2978 case OP_FTEWRITE: opchar = 'w'; break;
2979 case OP_FTEEXEC: opchar = 'x'; break;
2981 tryAMAGICftest_MG(opchar);
2983 STACKED_FTEST_CHECK;
2985 switch (PL_op->op_type) {
2987 #if !(defined(HAS_ACCESS) && defined(R_OK))
2993 #if defined(HAS_ACCESS) && defined(W_OK)
2998 stat_mode = S_IWUSR;
3002 #if defined(HAS_ACCESS) && defined(X_OK)
3007 stat_mode = S_IXUSR;
3011 #ifdef PERL_EFF_ACCESS
3014 stat_mode = S_IWUSR;
3018 #ifndef PERL_EFF_ACCESS
3025 #ifdef PERL_EFF_ACCESS
3030 stat_mode = S_IXUSR;
3036 #if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
3037 const char *name = POPpx;
3039 # ifdef PERL_EFF_ACCESS
3040 result = PERL_EFF_ACCESS(name, access_mode);
3042 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
3048 result = access(name, access_mode);
3050 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
3061 result = my_stat_flags(0);
3065 if (cando(stat_mode, effective, &PL_statcache))
3074 const int op_type = PL_op->op_type;
3079 case OP_FTIS: opchar = 'e'; break;
3080 case OP_FTSIZE: opchar = 's'; break;
3081 case OP_FTMTIME: opchar = 'M'; break;
3082 case OP_FTCTIME: opchar = 'C'; break;
3083 case OP_FTATIME: opchar = 'A'; break;
3085 tryAMAGICftest_MG(opchar);
3087 STACKED_FTEST_CHECK;
3089 result = my_stat_flags(0);
3093 if (op_type == OP_FTIS)
3096 /* You can't dTARGET inside OP_FTIS, because you'll get
3097 "panic: pad_sv po" - the op is not flagged to have a target. */
3101 #if Off_t_size > IVSIZE
3102 PUSHn(PL_statcache.st_size);
3104 PUSHi(PL_statcache.st_size);
3108 PUSHn( (((NV)PL_basetime - PL_statcache.st_mtime)) / 86400.0 );
3111 PUSHn( (((NV)PL_basetime - PL_statcache.st_atime)) / 86400.0 );
3114 PUSHn( (((NV)PL_basetime - PL_statcache.st_ctime)) / 86400.0 );
3128 switch (PL_op->op_type) {
3129 case OP_FTROWNED: opchar = 'O'; break;
3130 case OP_FTEOWNED: opchar = 'o'; break;
3131 case OP_FTZERO: opchar = 'z'; break;
3132 case OP_FTSOCK: opchar = 'S'; break;
3133 case OP_FTCHR: opchar = 'c'; break;
3134 case OP_FTBLK: opchar = 'b'; break;
3135 case OP_FTFILE: opchar = 'f'; break;
3136 case OP_FTDIR: opchar = 'd'; break;
3137 case OP_FTPIPE: opchar = 'p'; break;
3138 case OP_FTSUID: opchar = 'u'; break;
3139 case OP_FTSGID: opchar = 'g'; break;
3140 case OP_FTSVTX: opchar = 'k'; break;
3142 tryAMAGICftest_MG(opchar);
3144 STACKED_FTEST_CHECK;
3146 /* I believe that all these three are likely to be defined on most every
3147 system these days. */
3149 if(PL_op->op_type == OP_FTSUID) {
3150 if ((PL_op->op_flags & OPf_REF) == 0 && (PL_op->op_private & OPpFT_STACKED) == 0)
3156 if(PL_op->op_type == OP_FTSGID) {
3157 if ((PL_op->op_flags & OPf_REF) == 0 && (PL_op->op_private & OPpFT_STACKED) == 0)
3163 if(PL_op->op_type == OP_FTSVTX) {
3164 if ((PL_op->op_flags & OPf_REF) == 0 && (PL_op->op_private & OPpFT_STACKED) == 0)
3170 result = my_stat_flags(0);
3174 switch (PL_op->op_type) {
3176 if (PL_statcache.st_uid == PL_uid)
3180 if (PL_statcache.st_uid == PL_euid)
3184 if (PL_statcache.st_size == 0)
3188 if (S_ISSOCK(PL_statcache.st_mode))
3192 if (S_ISCHR(PL_statcache.st_mode))
3196 if (S_ISBLK(PL_statcache.st_mode))
3200 if (S_ISREG(PL_statcache.st_mode))
3204 if (S_ISDIR(PL_statcache.st_mode))
3208 if (S_ISFIFO(PL_statcache.st_mode))
3213 if (PL_statcache.st_mode & S_ISUID)
3219 if (PL_statcache.st_mode & S_ISGID)
3225 if (PL_statcache.st_mode & S_ISVTX)
3239 tryAMAGICftest_MG('l');
3240 STACKED_FTEST_CHECK;
3241 result = my_lstat_flags(0);
3246 if (S_ISLNK(PL_statcache.st_mode))
3260 tryAMAGICftest_MG('t');
3262 STACKED_FTEST_CHECK;
3264 if (PL_op->op_flags & OPf_REF)
3268 if (!(gv = MAYBE_DEREF_GV_nomg(tmpsv))) {
3269 name = SvPV_nomg(tmpsv, namelen);
3270 gv = gv_fetchpvn_flags(name, namelen, SvUTF8(tmpsv), SVt_PVIO);
3274 if (GvIO(gv) && IoIFP(GvIOp(gv)))
3275 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
3276 else if (name && isDIGIT(*name))
3280 if (PerlLIO_isatty(fd))
3285 #if defined(atarist) /* this will work with atariST. Configure will
3286 make guesses for other systems. */
3287 # define FILE_base(f) ((f)->_base)
3288 # define FILE_ptr(f) ((f)->_ptr)
3289 # define FILE_cnt(f) ((f)->_cnt)
3290 # define FILE_bufsiz(f) ((f)->_cnt + ((f)->_ptr - (f)->_base))
3301 register STDCHAR *s;
3303 register SV *sv = NULL;
3307 tryAMAGICftest_MG(PL_op->op_type == OP_FTTEXT ? 'T' : 'B');
3309 STACKED_FTEST_CHECK;
3311 if (PL_op->op_flags & OPf_REF)
3316 else if (PL_op->op_private & OPpFT_STACKED)
3318 else sv = POPs, gv = MAYBE_DEREF_GV_nomg(sv);
3321 if (gv == PL_defgv) {
3323 io = SvTYPE(PL_statgv) == SVt_PVIO
3327 goto really_filename;
3332 sv_setpvs(PL_statname, "");
3333 io = GvIO(PL_statgv);
3335 PL_laststatval = -1;
3336 PL_laststype = OP_STAT;
3337 if (io && IoIFP(io)) {
3338 if (! PerlIO_has_base(IoIFP(io)))
3339 DIE(aTHX_ "-T and -B not implemented on filehandles");
3340 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3341 if (PL_laststatval < 0)
3343 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
3344 if (PL_op->op_type == OP_FTTEXT)
3349 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
3350 i = PerlIO_getc(IoIFP(io));
3352 (void)PerlIO_ungetc(IoIFP(io),i);
3354 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
3356 len = PerlIO_get_bufsiz(IoIFP(io));
3357 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
3358 /* sfio can have large buffers - limit to 512 */
3363 SETERRNO(EBADF,RMS_IFI);
3365 SETERRNO(EBADF,RMS_IFI);
3370 sv_setpv(PL_statname, SvPV_nomg_const_nolen(sv));
3373 if (!(fp = PerlIO_open(SvPVX_const(PL_statname), "r"))) {
3375 PL_laststatval = -1;
3376 PL_laststype = OP_STAT;
3378 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname),
3380 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
3383 PL_laststype = OP_STAT;
3384 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(fp), &PL_statcache);
3385 if (PL_laststatval < 0) {
3386 (void)PerlIO_close(fp);
3389 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, NULL);
3390 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3391 (void)PerlIO_close(fp);
3393 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
3394 RETPUSHNO; /* special case NFS directories */
3395 RETPUSHYES; /* null file is anything */
3400 /* now scan s to look for textiness */
3401 /* XXX ASCII dependent code */
3403 #if defined(DOSISH) || defined(USEMYBINMODE)
3404 /* ignore trailing ^Z on short files */
3405 if (len && len < (I32)sizeof(tbuf) && tbuf[len-1] == 26)
3409 for (i = 0; i < len; i++, s++) {
3410 if (!*s) { /* null never allowed in text */
3415 else if (!(isPRINT(*s) || isSPACE(*s)))
3418 else if (*s & 128) {
3420 if (IN_LOCALE_RUNTIME && isALPHA_LC(*s))
3423 /* utf8 characters don't count as odd */
3424 if (UTF8_IS_START(*s)) {
3425 int ulen = UTF8SKIP(s);
3426 if (ulen < len - i) {
3428 for (j = 1; j < ulen; j++) {
3429 if (!UTF8_IS_CONTINUATION(s[j]))
3432 --ulen; /* loop does extra increment */
3442 *s != '\n' && *s != '\r' && *s != '\b' &&
3443 *s != '\t' && *s != '\f' && *s != 27)
3448 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
3459 const char *tmps = NULL;
3463 SV * const sv = POPs;
3464 if (PL_op->op_flags & OPf_SPECIAL) {
3465 gv = gv_fetchsv(sv, 0, SVt_PVIO);
3467 else if (!(gv = MAYBE_DEREF_GV(sv)))
3468 tmps = SvPV_nomg_const_nolen(sv);
3471 if( !gv && (!tmps || !*tmps) ) {
3472 HV * const table = GvHVn(PL_envgv);
3475 if ( (svp = hv_fetchs(table, "HOME", FALSE))
3476 || (svp = hv_fetchs(table, "LOGDIR", FALSE))
3478 || (svp = hv_fetchs(table, "SYS$LOGIN", FALSE))
3483 deprecate("chdir('') or chdir(undef) as chdir()");
3484 tmps = SvPV_nolen_const(*svp);
3488 TAINT_PROPER("chdir");
3493 TAINT_PROPER("chdir");
3496 IO* const io = GvIO(gv);
3499 PUSHi(fchdir(my_dirfd(IoDIRP(io))) >= 0);
3500 } else if (IoIFP(io)) {
3501 PUSHi(fchdir(PerlIO_fileno(IoIFP(io))) >= 0);
3505 SETERRNO(EBADF, RMS_IFI);
3511 SETERRNO(EBADF,RMS_IFI);
3515 DIE(aTHX_ PL_no_func, "fchdir");
3519 PUSHi( PerlDir_chdir(tmps) >= 0 );
3521 /* Clear the DEFAULT element of ENV so we'll get the new value
3523 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
3530 dVAR; dSP; dMARK; dTARGET;
3531 const I32 value = (I32)apply(PL_op->op_type, MARK, SP);
3542 char * const tmps = POPpx;
3543 TAINT_PROPER("chroot");
3544 PUSHi( chroot(tmps) >= 0 );
3547 DIE(aTHX_ PL_no_func, "chroot");
3555 const char * const tmps2 = POPpconstx;
3556 const char * const tmps = SvPV_nolen_const(TOPs);
3557 TAINT_PROPER("rename");
3559 anum = PerlLIO_rename(tmps, tmps2);
3561 if (!(anum = PerlLIO_stat(tmps, &PL_statbuf))) {
3562 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3565 if (PL_euid || PerlLIO_stat(tmps2, &PL_statbuf) < 0 || !S_ISDIR(PL_statbuf.st_mode))
3566 (void)UNLINK(tmps2);
3567 if (!(anum = link(tmps, tmps2)))
3568 anum = UNLINK(tmps);
3576 #if defined(HAS_LINK) || defined(HAS_SYMLINK)
3580 const int op_type = PL_op->op_type;
3584 if (op_type == OP_LINK)
3585 DIE(aTHX_ PL_no_func, "link");
3587 # ifndef HAS_SYMLINK
3588 if (op_type == OP_SYMLINK)
3589 DIE(aTHX_ PL_no_func, "symlink");
3593 const char * const tmps2 = POPpconstx;
3594 const char * const tmps = SvPV_nolen_const(TOPs);
3595 TAINT_PROPER(PL_op_desc[op_type]);
3597 # if defined(HAS_LINK)
3598 # if defined(HAS_SYMLINK)
3599 /* Both present - need to choose which. */
3600 (op_type == OP_LINK) ?
3601 PerlLIO_link(tmps, tmps2) : symlink(tmps, tmps2);
3603 /* Only have link, so calls to pp_symlink will have DIE()d above. */
3604 PerlLIO_link(tmps, tmps2);
3607 # if defined(HAS_SYMLINK)
3608 /* Only have symlink, so calls to pp_link will have DIE()d above. */
3609 symlink(tmps, tmps2);
3614 SETi( result >= 0 );
3621 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
3632 char buf[MAXPATHLEN];
3635 #ifndef INCOMPLETE_TAINTS
3639 len = readlink(tmps, buf, sizeof(buf) - 1);
3646 RETSETUNDEF; /* just pretend it's a normal file */
3650 #if !defined(HAS_MKDIR) || !defined(HAS_RMDIR)
3652 S_dooneliner(pTHX_ const char *cmd, const char *filename)
3654 char * const save_filename = filename;
3659 Size_t size = strlen(cmd) + (strlen(filename) * 2) + 10;
3661 PERL_ARGS_ASSERT_DOONELINER;
3663 Newx(cmdline, size, char);
3664 my_strlcpy(cmdline, cmd, size);
3665 my_strlcat(cmdline, " ", size);
3666 for (s = cmdline + strlen(cmdline); *filename; ) {
3670 if (s - cmdline < size)
3671 my_strlcpy(s, " 2>&1", size - (s - cmdline));
3672 myfp = PerlProc_popen(cmdline, "r");
3676 SV * const tmpsv = sv_newmortal();
3677 /* Need to save/restore 'PL_rs' ?? */
3678 s = sv_gets(tmpsv, myfp, 0);
3679 (void)PerlProc_pclose(myfp);
3683 #ifdef HAS_SYS_ERRLIST
3688 /* you don't see this */
3689 const char * const errmsg =
3690 #ifdef HAS_SYS_ERRLIST
3698 if (instr(s, errmsg)) {
3705 #define EACCES EPERM
3707 if (instr(s, "cannot make"))
3708 SETERRNO(EEXIST,RMS_FEX);
3709 else if (instr(s, "existing file"))
3710 SETERRNO(EEXIST,RMS_FEX);
3711 else if (instr(s, "ile exists"))
3712 SETERRNO(EEXIST,RMS_FEX);
3713 else if (instr(s, "non-exist"))
3714 SETERRNO(ENOENT,RMS_FNF);
3715 else if (instr(s, "does not exist"))
3716 SETERRNO(ENOENT,RMS_FNF);
3717 else if (instr(s, "not empty"))
3718 SETERRNO(EBUSY,SS_DEVOFFLINE);
3719 else if (instr(s, "cannot access"))
3720 SETERRNO(EACCES,RMS_PRV);
3722 SETERRNO(EPERM,RMS_PRV);
3725 else { /* some mkdirs return no failure indication */
3726 anum = (PerlLIO_stat(save_filename, &PL_statbuf) >= 0);
3727 if (PL_op->op_type == OP_RMDIR)
3732 SETERRNO(EACCES,RMS_PRV); /* a guess */
3741 /* This macro removes trailing slashes from a directory name.
3742 * Different operating and file systems take differently to
3743 * trailing slashes. According to POSIX 1003.1 1996 Edition
3744 * any number of trailing slashes should be allowed.
3745 * Thusly we snip them away so that even non-conforming
3746 * systems are happy.
3747 * We should probably do this "filtering" for all
3748 * the functions that expect (potentially) directory names:
3749 * -d, chdir(), chmod(), chown(), chroot(), fcntl()?,
3750 * (mkdir()), opendir(), rename(), rmdir(), stat(). --jhi */
3752 #define TRIMSLASHES(tmps,len,copy) (tmps) = SvPV_const(TOPs, (len)); \
3753 if ((len) > 1 && (tmps)[(len)-1] == '/') { \
3756 } while ((len) > 1 && (tmps)[(len)-1] == '/'); \
3757 (tmps) = savepvn((tmps), (len)); \
3767 const int mode = (MAXARG > 1 && (TOPs||((void)POPs,0))) ? POPi : 0777;
3769 TRIMSLASHES(tmps,len,copy);
3771 TAINT_PROPER("mkdir");
3773 SETi( PerlDir_mkdir(tmps, mode) >= 0 );
3777 SETi( dooneliner("mkdir", tmps) );
3778 oldumask = PerlLIO_umask(0);
3779 PerlLIO_umask(oldumask);
3780 PerlLIO_chmod(tmps, (mode & ~oldumask) & 0777);
3795 TRIMSLASHES(tmps,len,copy);
3796 TAINT_PROPER("rmdir");
3798 SETi( PerlDir_rmdir(tmps) >= 0 );
3800 SETi( dooneliner("rmdir", tmps) );
3807 /* Directory calls. */
3811 #if defined(Direntry_t) && defined(HAS_READDIR)
3813 const char * const dirname = POPpconstx;
3814 GV * const gv = MUTABLE_GV(POPs);
3815 register IO * const io = GvIOn(gv);
3820 if ((IoIFP(io) || IoOFP(io)))
3821 Perl_ck_warner_d(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
3822 "Opening filehandle %"HEKf" also as a directory",
3823 HEKfARG(GvENAME_HEK(gv)) );
3825 PerlDir_close(IoDIRP(io));
3826 if (!(IoDIRP(io) = PerlDir_open(dirname)))
3832 SETERRNO(EBADF,RMS_DIR);
3835 DIE(aTHX_ PL_no_dir_func, "opendir");
3841 #if !defined(Direntry_t) || !defined(HAS_READDIR)
3842 DIE(aTHX_ PL_no_dir_func, "readdir");
3844 #if !defined(I_DIRENT) && !defined(VMS)
3845 Direntry_t *readdir (DIR *);
3851 const I32 gimme = GIMME;
3852 GV * const gv = MUTABLE_GV(POPs);
3853 register const Direntry_t *dp;
3854 register IO * const io = GvIOn(gv);
3856 if (!io || !IoDIRP(io)) {
3857 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
3858 "readdir() attempted on invalid dirhandle %"HEKf,
3859 HEKfARG(GvENAME_HEK(gv)));
3864 dp = (Direntry_t *)PerlDir_read(IoDIRP(io));
3868 sv = newSVpvn(dp->d_name, dp->d_namlen);
3870 sv = newSVpv(dp->d_name, 0);
3872 #ifndef INCOMPLETE_TAINTS
3873 if (!(IoFLAGS(io) & IOf_UNTAINT))
3877 } while (gimme == G_ARRAY);
3879 if (!dp && gimme != G_ARRAY)
3886 SETERRNO(EBADF,RMS_ISI);
3887 if (GIMME == G_ARRAY)
3896 #if defined(HAS_TELLDIR) || defined(telldir)
3898 /* XXX does _anyone_ need this? --AD 2/20/1998 */
3899 /* XXX netbsd still seemed to.
3900 XXX HAS_TELLDIR_PROTO is new style, NEED_TELLDIR_PROTO is old style.
3901 --JHI 1999-Feb-02 */
3902 # if !defined(HAS_TELLDIR_PROTO) || defined(NEED_TELLDIR_PROTO)
3903 long telldir (DIR *);
3905 GV * const gv = MUTABLE_GV(POPs);
3906 register IO * const io = GvIOn(gv);
3908 if (!io || !IoDIRP(io)) {
3909 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
3910 "telldir() attempted on invalid dirhandle %"HEKf,
3911 HEKfARG(GvENAME_HEK(gv)));
3915 PUSHi( PerlDir_tell(IoDIRP(io)) );
3919 SETERRNO(EBADF,RMS_ISI);
3922 DIE(aTHX_ PL_no_dir_func, "telldir");
3928 #if defined(HAS_SEEKDIR) || defined(seekdir)
3930 const long along = POPl;
3931 GV * const gv = MUTABLE_GV(POPs);
3932 register IO * const io = GvIOn(gv);
3934 if (!io || !IoDIRP(io)) {
3935 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
3936 "seekdir() attempted on invalid dirhandle %"HEKf,
3937 HEKfARG(GvENAME_HEK(gv)));
3940 (void)PerlDir_seek(IoDIRP(io), along);
3945 SETERRNO(EBADF,RMS_ISI);
3948 DIE(aTHX_ PL_no_dir_func, "seekdir");
3954 #if defined(HAS_REWINDDIR) || defined(rewinddir)
3956 GV * const gv = MUTABLE_GV(POPs);
3957 register IO * const io = GvIOn(gv);
3959 if (!io || !IoDIRP(io)) {
3960 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
3961 "rewinddir() attempted on invalid dirhandle %"HEKf,
3962 HEKfARG(GvENAME_HEK(gv)));
3965 (void)PerlDir_rewind(IoDIRP(io));
3969 SETERRNO(EBADF,RMS_ISI);
3972 DIE(aTHX_ PL_no_dir_func, "rewinddir");
3978 #if defined(Direntry_t) && defined(HAS_READDIR)
3980 GV * const gv = MUTABLE_GV(POPs);
3981 register IO * const io = GvIOn(gv);
3983 if (!io || !IoDIRP(io)) {
3984 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
3985 "closedir() attempted on invalid dirhandle %"HEKf,
3986 HEKfARG(GvENAME_HEK(gv)));
3989 #ifdef VOID_CLOSEDIR
3990 PerlDir_close(IoDIRP(io));
3992 if (PerlDir_close(IoDIRP(io)) < 0) {
3993 IoDIRP(io) = 0; /* Don't try to close again--coredumps on SysV */
4002 SETERRNO(EBADF,RMS_IFI);
4005 DIE(aTHX_ PL_no_dir_func, "closedir");
4009 /* Process control. */
4018 PERL_FLUSHALL_FOR_CHILD;
4019 childpid = PerlProc_fork();
4023 #ifdef THREADS_HAVE_PIDS
4024 PL_ppid = (IV)getppid();
4026 #ifdef PERL_USES_PL_PIDSTATUS
4027 hv_clear(PL_pidstatus); /* no kids, so don't wait for 'em */
4033 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4038 PERL_FLUSHALL_FOR_CHILD;
4039 childpid = PerlProc_fork();
4045 DIE(aTHX_ PL_no_func, "fork");
4052 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(__LIBCATAMOUNT__)
4057 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
4058 childpid = wait4pid(-1, &argflags, 0);
4060 while ((childpid = wait4pid(-1, &argflags, 0)) == -1 &&
4065 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4066 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
4067 STATUS_NATIVE_CHILD_SET((childpid && childpid != -1) ? argflags : -1);
4069 STATUS_NATIVE_CHILD_SET((childpid > 0) ? argflags : -1);
4074 DIE(aTHX_ PL_no_func, "wait");
4080 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(__LIBCATAMOUNT__)
4082 const int optype = POPi;
4083 const Pid_t pid = TOPi;
4087 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
4088 result = wait4pid(pid, &argflags, optype);
4090 while ((result = wait4pid(pid, &argflags, optype)) == -1 &&
4095 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4096 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
4097 STATUS_NATIVE_CHILD_SET((result && result != -1) ? argflags : -1);
4099 STATUS_NATIVE_CHILD_SET((result > 0) ? argflags : -1);
4104 DIE(aTHX_ PL_no_func, "waitpid");
4110 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
4111 #if defined(__LIBCATAMOUNT__)
4112 PL_statusvalue = -1;
4121 while (++MARK <= SP) {
4122 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
4127 TAINT_PROPER("system");
4129 PERL_FLUSHALL_FOR_CHILD;
4130 #if (defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(OS2) || defined(PERL_MICRO)
4135 #if (defined(HAS_SIGPROCMASK) && !defined(PERL_MICRO))
4136 sigset_t newset, oldset;
4139 if (PerlProc_pipe(pp) >= 0)
4141 #if (defined(HAS_SIGPROCMASK) && !defined(PERL_MICRO))
4142 sigemptyset(&newset);
4143 sigaddset(&newset, SIGCHLD);
4144 sigprocmask(SIG_BLOCK, &newset, &oldset);
4146 while ((childpid = PerlProc_fork()) == -1) {
4147 if (errno != EAGAIN) {
4152 PerlLIO_close(pp[0]);
4153 PerlLIO_close(pp[1]);
4155 #if (defined(HAS_SIGPROCMASK) && !defined(PERL_MICRO))
4156 sigprocmask(SIG_SETMASK, &oldset, NULL);
4163 Sigsave_t ihand,qhand; /* place to save signals during system() */
4167 PerlLIO_close(pp[1]);
4169 rsignal_save(SIGINT, (Sighandler_t) SIG_IGN, &ihand);
4170 rsignal_save(SIGQUIT, (Sighandler_t) SIG_IGN, &qhand);
4173 result = wait4pid(childpid, &status, 0);
4174 } while (result == -1 && errno == EINTR);
4176 #ifdef HAS_SIGPROCMASK
4177 sigprocmask(SIG_SETMASK, &oldset, NULL);
4179 (void)rsignal_restore(SIGINT, &ihand);
4180 (void)rsignal_restore(SIGQUIT, &qhand);
4182 STATUS_NATIVE_CHILD_SET(result == -1 ? -1 : status);
4183 do_execfree(); /* free any memory child malloced on fork */
4190 while (n < sizeof(int)) {
4191 n1 = PerlLIO_read(pp[0],
4192 (void*)(((char*)&errkid)+n),
4198 PerlLIO_close(pp[0]);
4199 if (n) { /* Error */
4200 if (n != sizeof(int))
4201 DIE(aTHX_ "panic: kid popen errno read, n=%u", n);
4202 errno = errkid; /* Propagate errno from kid */
4203 STATUS_NATIVE_CHILD_SET(-1);
4206 XPUSHi(STATUS_CURRENT);
4209 #if (defined(HAS_SIGPROCMASK) && !defined(PERL_MICRO))
4210 sigprocmask(SIG_SETMASK, &oldset, NULL);
4213 PerlLIO_close(pp[0]);
4214 #if defined(HAS_FCNTL) && defined(F_SETFD)
4215 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
4218 if (PL_op->op_flags & OPf_STACKED) {
4219 SV * const really = *++MARK;
4220 value = (I32)do_aexec5(really, MARK, SP, pp[1], did_pipes);
4222 else if (SP - MARK != 1)
4223 value = (I32)do_aexec5(NULL, MARK, SP, pp[1], did_pipes);
4225 value = (I32)do_exec3(SvPVx_nolen(sv_mortalcopy(*SP)), pp[1], did_pipes);
4229 #else /* ! FORK or VMS or OS/2 */
4232 if (PL_op->op_flags & OPf_STACKED) {
4233 SV * const really = *++MARK;
4234 # if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__) || defined(__VMS)
4235 value = (I32)do_aspawn(really, MARK, SP);
4237 value = (I32)do_aspawn(really, (void **)MARK, (void **)SP);
4240 else if (SP - MARK != 1) {
4241 # if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__) || defined(__VMS)
4242 value = (I32)do_aspawn(NULL, MARK, SP);
4244 value = (I32)do_aspawn(NULL, (void **)MARK, (void **)SP);
4248 value = (I32)do_spawn(SvPVx_nolen(sv_mortalcopy(*SP)));
4250 if (PL_statusvalue == -1) /* hint that value must be returned as is */
4252 STATUS_NATIVE_CHILD_SET(value);
4255 XPUSHi(result ? value : STATUS_CURRENT);
4256 #endif /* !FORK or VMS or OS/2 */
4263 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
4268 while (++MARK <= SP) {
4269 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
4274 TAINT_PROPER("exec");
4276 PERL_FLUSHALL_FOR_CHILD;
4277 if (PL_op->op_flags & OPf_STACKED) {
4278 SV * const really = *++MARK;
4279 value = (I32)do_aexec(really, MARK, SP);
4281 else if (SP - MARK != 1)
4283 value = (I32)vms_do_aexec(NULL, MARK, SP);
4287 (void ) do_aspawn(NULL, MARK, SP);
4291 value = (I32)do_aexec(NULL, MARK, SP);
4296 value = (I32)vms_do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
4299 (void) do_spawn(SvPVx_nolen(sv_mortalcopy(*SP)));
4302 value = (I32)do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
4316 # ifdef THREADS_HAVE_PIDS
4317 if (PL_ppid != 1 && getppid() == 1)
4318 /* maybe the parent process has died. Refresh ppid cache */
4322 XPUSHi( getppid() );
4326 DIE(aTHX_ PL_no_func, "getppid");
4336 (MAXARG < 1) ? 0 : TOPs ? SvIVx(POPs) : ((void)POPs, 0);
4339 pgrp = (I32)BSD_GETPGRP(pid);
4341 if (pid != 0 && pid != PerlProc_getpid())
4342 DIE(aTHX_ "POSIX getpgrp can't take an argument");
4348 DIE(aTHX_ PL_no_func, "getpgrp()");
4358 pgrp = MAXARG == 2 && (TOPs||POPs) ? POPi : 0;
4359 if (MAXARG > 0) pid = TOPs && TOPi;
4365 TAINT_PROPER("setpgrp");
4367 SETi( BSD_SETPGRP(pid, pgrp) >= 0 );
4369 if ((pgrp != 0 && pgrp != PerlProc_getpid())
4370 || (pid != 0 && pid != PerlProc_getpid()))
4372 DIE(aTHX_ "setpgrp can't take arguments");
4374 SETi( setpgrp() >= 0 );
4375 #endif /* USE_BSDPGRP */
4378 DIE(aTHX_ PL_no_func, "setpgrp()");
4382 #if defined(__GLIBC__) && ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3) || (__GLIBC__ > 2))
4383 # define PRIORITY_WHICH_T(which) (__priority_which_t)which
4385 # define PRIORITY_WHICH_T(which) which
4390 #ifdef HAS_GETPRIORITY
4392 const int who = POPi;
4393 const int which = TOPi;
4394 SETi( getpriority(PRIORITY_WHICH_T(which), who) );
4397 DIE(aTHX_ PL_no_func, "getpriority()");
4403 #ifdef HAS_SETPRIORITY
4405 const int niceval = POPi;
4406 const int who = POPi;
4407 const int which = TOPi;
4408 TAINT_PROPER("setpriority");
4409 SETi( setpriority(PRIORITY_WHICH_T(which), who, niceval) >= 0 );
4412 DIE(aTHX_ PL_no_func, "setpriority()");
4416 #undef PRIORITY_WHICH_T
4424 XPUSHn( time(NULL) );
4426 XPUSHi( time(NULL) );
4438 (void)PerlProc_times(&PL_timesbuf);
4440 (void)PerlProc_times((tbuffer_t *)&PL_timesbuf); /* time.h uses different name for */
4441 /* struct tms, though same data */
4445 mPUSHn(((NV)PL_timesbuf.tms_utime)/(NV)PL_clocktick);
4446 if (GIMME == G_ARRAY) {
4447 mPUSHn(((NV)PL_timesbuf.tms_stime)/(NV)PL_clocktick);
4448 mPUSHn(((NV)PL_timesbuf.tms_cutime)/(NV)PL_clocktick);
4449 mPUSHn(((NV)PL_timesbuf.tms_cstime)/(NV)PL_clocktick);
4457 if (GIMME == G_ARRAY) {
4464 DIE(aTHX_ "times not implemented");
4466 #endif /* HAS_TIMES */
4469 /* The 32 bit int year limits the times we can represent to these
4470 boundaries with a few days wiggle room to account for time zone
4473 /* Sat Jan 3 00:00:00 -2147481748 */
4474 #define TIME_LOWER_BOUND -67768100567755200.0
4475 /* Sun Dec 29 12:00:00 2147483647 */
4476 #define TIME_UPPER_BOUND 67767976233316800.0
4485 const char *opname = PL_op->op_type == OP_LOCALTIME ? "localtime" : "gmtime";
4486 static const char * const dayname[] =
4487 {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
4488 static const char * const monname[] =
4489 {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
4490 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
4492 if (MAXARG < 1 || (!TOPs && ((void)POPs, 1))) {
4495 when = (Time64_T)now;
4498 NV input = Perl_floor(POPn);
4499 when = (Time64_T)input;
4500 if (when != input) {
4501 /* diag_listed_as: gmtime(%f) too large */
4502 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4503 "%s(%.0" NVff ") too large", opname, input);
4507 if ( TIME_LOWER_BOUND > when ) {
4508 /* diag_listed_as: gmtime(%f) too small */
4509 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4510 "%s(%.0" NVff ") too small", opname, when);
4513 else if( when > TIME_UPPER_BOUND ) {
4514 /* diag_listed_as: gmtime(%f) too small */
4515 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4516 "%s(%.0" NVff ") too large", opname, when);
4520 if (PL_op->op_type == OP_LOCALTIME)
4521 err = S_localtime64_r(&when, &tmbuf);
4523 err = S_gmtime64_r(&when, &tmbuf);
4527 /* XXX %lld broken for quads */
4528 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4529 "%s(%.0" NVff ") failed", opname, when);
4532 if (GIMME != G_ARRAY) { /* scalar context */
4534 /* XXX newSVpvf()'s %lld type is broken, so cheat with a double */
4535 double year = (double)tmbuf.tm_year + 1900;
4542 tsv = Perl_newSVpvf(aTHX_ "%s %s %2d %02d:%02d:%02d %.0f",
4543 dayname[tmbuf.tm_wday],
4544 monname[tmbuf.tm_mon],
4552 else { /* list context */
4558 mPUSHi(tmbuf.tm_sec);
4559 mPUSHi(tmbuf.tm_min);
4560 mPUSHi(tmbuf.tm_hour);
4561 mPUSHi(tmbuf.tm_mday);
4562 mPUSHi(tmbuf.tm_mon);
4563 mPUSHn(tmbuf.tm_year);
4564 mPUSHi(tmbuf.tm_wday);
4565 mPUSHi(tmbuf.tm_yday);
4566 mPUSHi(tmbuf.tm_isdst);
4577 anum = alarm((unsigned int)anum);
4583 DIE(aTHX_ PL_no_func, "alarm");
4594 (void)time(&lasttime);
4595 if (MAXARG < 1 || (!TOPs && !POPs))
4599 PerlProc_sleep((unsigned int)duration);
4602 XPUSHi(when - lasttime);
4606 /* Shared memory. */
4607 /* Merged with some message passing. */
4611 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4612 dVAR; dSP; dMARK; dTARGET;
4613 const int op_type = PL_op->op_type;
4618 value = (I32)(do_msgsnd(MARK, SP) >= 0);
4621 value = (I32)(do_msgrcv(MARK, SP) >= 0);
4624 value = (I32)(do_semop(MARK, SP) >= 0);
4627 value = (I32)(do_shmio(op_type, MARK, SP) >= 0);
4635 return Perl_pp_semget(aTHX);
4643 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4644 dVAR; dSP; dMARK; dTARGET;
4645 const int anum = do_ipcget(PL_op->op_type, MARK, SP);
4652 DIE(aTHX_ "System V IPC is not implemented on this machine");
4658 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4659 dVAR; dSP; dMARK; dTARGET;
4660 const int anum = do_ipcctl(PL_op->op_type, MARK, SP);
4668 PUSHp(zero_but_true, ZBTLEN);
4672 return Perl_pp_semget(aTHX);
4676 /* I can't const this further without getting warnings about the types of
4677 various arrays passed in from structures. */
4679 S_space_join_names_mortal(pTHX_ char *const *array)
4683 PERL_ARGS_ASSERT_SPACE_JOIN_NAMES_MORTAL;
4685 if (array && *array) {
4686 target = newSVpvs_flags("", SVs_TEMP);
4688 sv_catpv(target, *array);
4691 sv_catpvs(target, " ");
4694 target = sv_mortalcopy(&PL_sv_no);
4699 /* Get system info. */
4703 #if defined(HAS_GETHOSTBYNAME) || defined(HAS_GETHOSTBYADDR) || defined(HAS_GETHOSTENT)
4705 I32 which = PL_op->op_type;
4706 register char **elem;
4708 #ifndef HAS_GETHOST_PROTOS /* XXX Do we need individual probes? */
4709 struct hostent *gethostbyaddr(Netdb_host_t, Netdb_hlen_t, int);
4710 struct hostent *gethostbyname(Netdb_name_t);
4711 struct hostent *gethostent(void);
4713 struct hostent *hent = NULL;
4717 if (which == OP_GHBYNAME) {
4718 #ifdef HAS_GETHOSTBYNAME
4719 const char* const name = POPpbytex;
4720 hent = PerlSock_gethostbyname(name);
4722 DIE(aTHX_ PL_no_sock_func, "gethostbyname");
4725 else if (which == OP_GHBYADDR) {
4726 #ifdef HAS_GETHOSTBYADDR
4727 const int addrtype = POPi;
4728 SV * const addrsv = POPs;
4730 const char *addr = (char *)SvPVbyte(addrsv, addrlen);
4732 hent = PerlSock_gethostbyaddr(addr, (Netdb_hlen_t) addrlen, addrtype);
4734 DIE(aTHX_ PL_no_sock_func, "gethostbyaddr");
4738 #ifdef HAS_GETHOSTENT
4739 hent = PerlSock_gethostent();
4741 DIE(aTHX_ PL_no_sock_func, "gethostent");
4744 #ifdef HOST_NOT_FOUND
4746 #ifdef USE_REENTRANT_API
4747 # ifdef USE_GETHOSTENT_ERRNO
4748 h_errno = PL_reentrant_buffer->_gethostent_errno;
4751 STATUS_UNIX_SET(h_errno);
4755 if (GIMME != G_ARRAY) {
4756 PUSHs(sv = sv_newmortal());
4758 if (which == OP_GHBYNAME) {
4760 sv_setpvn(sv, hent->h_addr, hent->h_length);
4763 sv_setpv(sv, (char*)hent->h_name);
4769 mPUSHs(newSVpv((char*)hent->h_name, 0));
4770 PUSHs(space_join_names_mortal(hent->h_aliases));
4771 mPUSHi(hent->h_addrtype);
4772 len = hent->h_length;
4775 for (elem = hent->h_addr_list; elem && *elem; elem++) {
4776 mXPUSHp(*elem, len);
4780 mPUSHp(hent->h_addr, len);
4782 PUSHs(sv_mortalcopy(&PL_sv_no));
4787 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
4793 #if defined(HAS_GETNETBYNAME) || defined(HAS_GETNETBYADDR) || defined(HAS_GETNETENT)
4795 I32 which = PL_op->op_type;
4797 #ifndef HAS_GETNET_PROTOS /* XXX Do we need individual probes? */
4798 struct netent *getnetbyaddr(Netdb_net_t, int);
4799 struct netent *getnetbyname(Netdb_name_t);
4800 struct netent *getnetent(void);
4802 struct netent *nent;
4804 if (which == OP_GNBYNAME){
4805 #ifdef HAS_GETNETBYNAME
4806 const char * const name = POPpbytex;
4807 nent = PerlSock_getnetbyname(name);
4809 DIE(aTHX_ PL_no_sock_func, "getnetbyname");
4812 else if (which == OP_GNBYADDR) {
4813 #ifdef HAS_GETNETBYADDR
4814 const int addrtype = POPi;
4815 const Netdb_net_t addr = (Netdb_net_t) (U32)POPu;
4816 nent = PerlSock_getnetbyaddr(addr, addrtype);
4818 DIE(aTHX_ PL_no_sock_func, "getnetbyaddr");
4822 #ifdef HAS_GETNETENT
4823 nent = PerlSock_getnetent();
4825 DIE(aTHX_ PL_no_sock_func, "getnetent");
4828 #ifdef HOST_NOT_FOUND
4830 #ifdef USE_REENTRANT_API
4831 # ifdef USE_GETNETENT_ERRNO
4832 h_errno = PL_reentrant_buffer->_getnetent_errno;
4835 STATUS_UNIX_SET(h_errno);
4840 if (GIMME != G_ARRAY) {
4841 PUSHs(sv = sv_newmortal());
4843 if (which == OP_GNBYNAME)
4844 sv_setiv(sv, (IV)nent->n_net);
4846 sv_setpv(sv, nent->n_name);
4852 mPUSHs(newSVpv(nent->n_name, 0));
4853 PUSHs(space_join_names_mortal(nent->n_aliases));
4854 mPUSHi(nent->n_addrtype);
4855 mPUSHi(nent->n_net);
4860 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
4866 #if defined(HAS_GETPROTOBYNAME) || defined(HAS_GETPROTOBYNUMBER) || defined(HAS_GETPROTOENT)
4868 I32 which = PL_op->op_type;
4870 #ifndef HAS_GETPROTO_PROTOS /* XXX Do we need individual probes? */
4871 struct protoent *getprotobyname(Netdb_name_t);
4872 struct protoent *getprotobynumber(int);
4873 struct protoent *getprotoent(void);
4875 struct protoent *pent;
4877 if (which == OP_GPBYNAME) {
4878 #ifdef HAS_GETPROTOBYNAME
4879 const char* const name = POPpbytex;
4880 pent = PerlSock_getprotobyname(name);
4882 DIE(aTHX_ PL_no_sock_func, "getprotobyname");
4885 else if (which == OP_GPBYNUMBER) {
4886 #ifdef HAS_GETPROTOBYNUMBER
4887 const int number = POPi;
4888 pent = PerlSock_getprotobynumber(number);
4890 DIE(aTHX_ PL_no_sock_func, "getprotobynumber");
4894 #ifdef HAS_GETPROTOENT
4895 pent = PerlSock_getprotoent();
4897 DIE(aTHX_ PL_no_sock_func, "getprotoent");
4901 if (GIMME != G_ARRAY) {
4902 PUSHs(sv = sv_newmortal());
4904 if (which == OP_GPBYNAME)
4905 sv_setiv(sv, (IV)pent->p_proto);
4907 sv_setpv(sv, pent->p_name);
4913 mPUSHs(newSVpv(pent->p_name, 0));
4914 PUSHs(space_join_names_mortal(pent->p_aliases));
4915 mPUSHi(pent->p_proto);
4920 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
4926 #if defined(HAS_GETSERVBYNAME) || defined(HAS_GETSERVBYPORT) || defined(HAS_GETSERVENT)
4928 I32 which = PL_op->op_type;
4930 #ifndef HAS_GETSERV_PROTOS /* XXX Do we need individual probes? */
4931 struct servent *getservbyname(Netdb_name_t, Netdb_name_t);
4932 struct servent *getservbyport(int, Netdb_name_t);
4933 struct servent *getservent(void);
4935 struct servent *sent;
4937 if (which == OP_GSBYNAME) {
4938 #ifdef HAS_GETSERVBYNAME
4939 const char * const proto = POPpbytex;
4940 const char * const name = POPpbytex;
4941 sent = PerlSock_getservbyname(name, (proto && !*proto) ? NULL : proto);
4943 DIE(aTHX_ PL_no_sock_func, "getservbyname");
4946 else if (which == OP_GSBYPORT) {
4947 #ifdef HAS_GETSERVBYPORT
4948 const char * const proto = POPpbytex;
4949 unsigned short port = (unsigned short)POPu;
4951 port = PerlSock_htons(port);
4953 sent = PerlSock_getservbyport(port, (proto && !*proto) ? NULL : proto);
4955 DIE(aTHX_ PL_no_sock_func, "getservbyport");
4959 #ifdef HAS_GETSERVENT
4960 sent = PerlSock_getservent();
4962 DIE(aTHX_ PL_no_sock_func, "getservent");
4966 if (GIMME != G_ARRAY) {
4967 PUSHs(sv = sv_newmortal());
4969 if (which == OP_GSBYNAME) {
4971 sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
4973 sv_setiv(sv, (IV)(sent->s_port));
4977 sv_setpv(sv, sent->s_name);
4983 mPUSHs(newSVpv(sent->s_name, 0));
4984 PUSHs(space_join_names_mortal(sent->s_aliases));
4986 mPUSHi(PerlSock_ntohs(sent->s_port));
4988 mPUSHi(sent->s_port);
4990 mPUSHs(newSVpv(sent->s_proto, 0));
4995 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5002 const int stayopen = TOPi;
5003 switch(PL_op->op_type) {
5005 #ifdef HAS_SETHOSTENT
5006 PerlSock_sethostent(stayopen);
5008 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5011 #ifdef HAS_SETNETENT
5013 PerlSock_setnetent(stayopen);
5015 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5019 #ifdef HAS_SETPROTOENT
5020 PerlSock_setprotoent(stayopen);
5022 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5026 #ifdef HAS_SETSERVENT
5027 PerlSock_setservent(stayopen);
5029 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5039 switch(PL_op->op_type) {
5041 #ifdef HAS_ENDHOSTENT
5042 PerlSock_endhostent();
5044 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5048 #ifdef HAS_ENDNETENT
5049 PerlSock_endnetent();
5051 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5055 #ifdef HAS_ENDPROTOENT
5056 PerlSock_endprotoent();
5058 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5062 #ifdef HAS_ENDSERVENT
5063 PerlSock_endservent();
5065 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5069 #if defined(HAS_GROUP) && defined(HAS_SETGRENT)
5072 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5076 #if defined(HAS_GROUP) && defined(HAS_ENDGRENT)
5079 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5083 #if defined(HAS_PASSWD) && defined(HAS_SETPWENT)
5086 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5090 #if defined(HAS_PASSWD) && defined(HAS_ENDPWENT)
5093 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5105 I32 which = PL_op->op_type;
5107 struct passwd *pwent = NULL;
5109 * We currently support only the SysV getsp* shadow password interface.
5110 * The interface is declared in <shadow.h> and often one needs to link
5111 * with -lsecurity or some such.
5112 * This interface is used at least by Solaris, HP-UX, IRIX, and Linux.
5115 * AIX getpwnam() is clever enough to return the encrypted password
5116 * only if the caller (euid?) is root.
5118 * There are at least three other shadow password APIs. Many platforms
5119 * seem to contain more than one interface for accessing the shadow
5120 * password databases, possibly for compatibility reasons.
5121 * The getsp*() is by far he simplest one, the other two interfaces
5122 * are much more complicated, but also very similar to each other.
5127 * struct pr_passwd *getprpw*();
5128 * The password is in
5129 * char getprpw*(...).ufld.fd_encrypt[]
5130 * Mention HAS_GETPRPWNAM here so that Configure probes for it.
5135 * struct es_passwd *getespw*();
5136 * The password is in
5137 * char *(getespw*(...).ufld.fd_encrypt)
5138 * Mention HAS_GETESPWNAM here so that Configure probes for it.
5141 * struct userpw *getuserpw();
5142 * The password is in
5143 * char *(getuserpw(...)).spw_upw_passwd
5144 * (but the de facto standard getpwnam() should work okay)
5146 * Mention I_PROT here so that Configure probes for it.
5148 * In HP-UX for getprpw*() the manual page claims that one should include
5149 * <hpsecurity.h> instead of <sys/security.h>, but that is not needed
5150 * if one includes <shadow.h> as that includes <hpsecurity.h>,
5151 * and pp_sys.c already includes <shadow.h> if there is such.
5153 * Note that <sys/security.h> is already probed for, but currently
5154 * it is only included in special cases.
5156 * In Digital UNIX/Tru64 if using the getespw*() (which seems to be
5157 * be preferred interface, even though also the getprpw*() interface
5158 * is available) one needs to link with -lsecurity -ldb -laud -lm.
5159 * One also needs to call set_auth_parameters() in main() before
5160 * doing anything else, whether one is using getespw*() or getprpw*().
5162 * Note that accessing the shadow databases can be magnitudes
5163 * slower than accessing the standard databases.
5168 # if defined(__CYGWIN__) && defined(USE_REENTRANT_API)
5169 /* Cygwin 1.5.3-1 has buggy getpwnam_r() and getpwuid_r():
5170 * the pw_comment is left uninitialized. */
5171 PL_reentrant_buffer->_pwent_struct.pw_comment = NULL;
5177 const char* const name = POPpbytex;
5178 pwent = getpwnam(name);
5184 pwent = getpwuid(uid);
5188 # ifdef HAS_GETPWENT
5190 #ifdef POSIX_BC /* In some cases pw_passwd has invalid addresses */
5191 if (pwent) pwent = getpwnam(pwent->pw_name);
5194 DIE(aTHX_ PL_no_func, "getpwent");
5200 if (GIMME != G_ARRAY) {
5201 PUSHs(sv = sv_newmortal());
5203 if (which == OP_GPWNAM)
5204 # if Uid_t_sign <= 0
5205 sv_setiv(sv, (IV)pwent->pw_uid);
5207 sv_setuv(sv, (UV)pwent->pw_uid);
5210 sv_setpv(sv, pwent->pw_name);
5216 mPUSHs(newSVpv(pwent->pw_name, 0));
5220 /* If we have getspnam(), we try to dig up the shadow
5221 * password. If we are underprivileged, the shadow
5222 * interface will set the errno to EACCES or similar,
5223 * and return a null pointer. If this happens, we will
5224 * use the dummy password (usually "*" or "x") from the
5225 * standard password database.
5227 * In theory we could skip the shadow call completely
5228 * if euid != 0 but in practice we cannot know which
5229 * security measures are guarding the shadow databases
5230 * on a random platform.
5232 * Resist the urge to use additional shadow interfaces.
5233 * Divert the urge to writing an extension instead.
5236 /* Some AIX setups falsely(?) detect some getspnam(), which
5237 * has a different API than the Solaris/IRIX one. */
5238 # if defined(HAS_GETSPNAM) && !defined(_AIX)
5241 const struct spwd * const spwent = getspnam(pwent->pw_name);
5242 /* Save and restore errno so that
5243 * underprivileged attempts seem
5244 * to have never made the unsuccessful
5245 * attempt to retrieve the shadow password. */
5247 if (spwent && spwent->sp_pwdp)
5248 sv_setpv(sv, spwent->sp_pwdp);
5252 if (!SvPOK(sv)) /* Use the standard password, then. */
5253 sv_setpv(sv, pwent->pw_passwd);
5256 # ifndef INCOMPLETE_TAINTS
5257 /* passwd is tainted because user himself can diddle with it.
5258 * admittedly not much and in a very limited way, but nevertheless. */
5262 # if Uid_t_sign <= 0
5263 mPUSHi(pwent->pw_uid);
5265 mPUSHu(pwent->pw_uid);
5268 # if Uid_t_sign <= 0
5269 mPUSHi(pwent->pw_gid);
5271 mPUSHu(pwent->pw_gid);
5273 /* pw_change, pw_quota, and pw_age are mutually exclusive--
5274 * because of the poor interface of the Perl getpw*(),
5275 * not because there's some standard/convention saying so.
5276 * A better interface would have been to return a hash,
5277 * but we are accursed by our history, alas. --jhi. */
5279 mPUSHi(pwent->pw_change);
5282 mPUSHi(pwent->pw_quota);
5285 mPUSHs(newSVpv(pwent->pw_age, 0));
5287 /* I think that you can never get this compiled, but just in case. */
5288 PUSHs(sv_mortalcopy(&PL_sv_no));
5293 /* pw_class and pw_comment are mutually exclusive--.
5294 * see the above note for pw_change, pw_quota, and pw_age. */
5296 mPUSHs(newSVpv(pwent->pw_class, 0));
5299 mPUSHs(newSVpv(pwent->pw_comment, 0));
5301 /* I think that you can never get this compiled, but just in case. */
5302 PUSHs(sv_mortalcopy(&PL_sv_no));
5307 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_gecos, 0)));
5309 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5311 # ifndef INCOMPLETE_TAINTS
5312 /* pw_gecos is tainted because user himself can diddle with it. */
5316 mPUSHs(newSVpv(pwent->pw_dir, 0));
5318 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_shell, 0)));
5319 # ifndef INCOMPLETE_TAINTS
5320 /* pw_shell is tainted because user himself can diddle with it. */
5325 mPUSHi(pwent->pw_expire);
5330 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5338 const I32 which = PL_op->op_type;
5339 const struct group *grent;
5341 if (which == OP_GGRNAM) {
5342 const char* const name = POPpbytex;
5343 grent = (const struct group *)getgrnam(name);
5345 else if (which == OP_GGRGID) {
5346 const Gid_t gid = POPi;
5347 grent = (const struct group *)getgrgid(gid);
5351 grent = (struct group *)getgrent();
5353 DIE(aTHX_ PL_no_func, "getgrent");
5357 if (GIMME != G_ARRAY) {
5358 SV * const sv = sv_newmortal();
5362 if (which == OP_GGRNAM)
5364 sv_setiv(sv, (IV)grent->gr_gid);
5366 sv_setuv(sv, (UV)grent->gr_gid);
5369 sv_setpv(sv, grent->gr_name);
5375 mPUSHs(newSVpv(grent->gr_name, 0));
5378 mPUSHs(newSVpv(grent->gr_passwd, 0));
5380 PUSHs(sv_mortalcopy(&PL_sv_no));
5384 mPUSHi(grent->gr_gid);
5386 mPUSHu(grent->gr_gid);
5389 #if !(defined(_CRAYMPP) && defined(USE_REENTRANT_API))
5390 /* In UNICOS/mk (_CRAYMPP) the multithreading
5391 * versions (getgrnam_r, getgrgid_r)
5392 * seem to return an illegal pointer
5393 * as the group members list, gr_mem.
5394 * getgrent() doesn't even have a _r version
5395 * but the gr_mem is poisonous anyway.
5396 * So yes, you cannot get the list of group
5397 * members if building multithreaded in UNICOS/mk. */
5398 PUSHs(space_join_names_mortal(grent->gr_mem));
5404 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5414 if (!(tmps = PerlProc_getlogin()))
5416 sv_setpv_mg(TARG, tmps);
5420 DIE(aTHX_ PL_no_func, "getlogin");
5424 /* Miscellaneous. */
5429 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
5430 register I32 items = SP - MARK;
5431 unsigned long a[20];
5436 while (++MARK <= SP) {
5437 if (SvTAINTED(*MARK)) {
5443 TAINT_PROPER("syscall");
5446 /* This probably won't work on machines where sizeof(long) != sizeof(int)
5447 * or where sizeof(long) != sizeof(char*). But such machines will
5448 * not likely have syscall implemented either, so who cares?
5450 while (++MARK <= SP) {
5451 if (SvNIOK(*MARK) || !i)
5452 a[i++] = SvIV(*MARK);
5453 else if (*MARK == &PL_sv_undef)
5456 a[i++] = (unsigned long)SvPV_force_nolen(*MARK);
5462 DIE(aTHX_ "Too many args to syscall");
5464 DIE(aTHX_ "Too few args to syscall");
5466 retval = syscall(a[0]);
5469 retval = syscall(a[0],a[1]);
5472 retval = syscall(a[0],a[1],a[2]);
5475 retval = syscall(a[0],a[1],a[2],a[3]);
5478 retval = syscall(a[0],a[1],a[2],a[3],a[4]);
5481 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5]);
5484 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6]);
5487 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7]);
5491 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8]);
5494 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9]);
5497 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5501 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5505 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5509 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5510 a[10],a[11],a[12],a[13]);
5512 #endif /* atarist */
5518 DIE(aTHX_ PL_no_func, "syscall");
5522 #ifdef FCNTL_EMULATE_FLOCK
5524 /* XXX Emulate flock() with fcntl().
5525 What's really needed is a good file locking module.
5529 fcntl_emulate_flock(int fd, int operation)
5534 switch (operation & ~LOCK_NB) {
5536 flock.l_type = F_RDLCK;
5539 flock.l_type = F_WRLCK;
5542 flock.l_type = F_UNLCK;
5548 flock.l_whence = SEEK_SET;
5549 flock.l_start = flock.l_len = (Off_t)0;
5551 res = fcntl(fd, (operation & LOCK_NB) ? F_SETLK : F_SETLKW, &flock);
5552 if (res == -1 && ((errno == EAGAIN) || (errno == EACCES)))
5553 errno = EWOULDBLOCK;
5557 #endif /* FCNTL_EMULATE_FLOCK */
5559 #ifdef LOCKF_EMULATE_FLOCK
5561 /* XXX Emulate flock() with lockf(). This is just to increase
5562 portability of scripts. The calls are not completely
5563 interchangeable. What's really needed is a good file
5567 /* The lockf() constants might have been defined in <unistd.h>.
5568 Unfortunately, <unistd.h> causes troubles on some mixed
5569 (BSD/POSIX) systems, such as SunOS 4.1.3.
5571 Further, the lockf() constants aren't POSIX, so they might not be
5572 visible if we're compiling with _POSIX_SOURCE defined. Thus, we'll
5573 just stick in the SVID values and be done with it. Sigh.
5577 # define F_ULOCK 0 /* Unlock a previously locked region */
5580 # define F_LOCK 1 /* Lock a region for exclusive use */
5583 # define F_TLOCK 2 /* Test and lock a region for exclusive use */
5586 # define F_TEST 3 /* Test a region for other processes locks */
5590 lockf_emulate_flock(int fd, int operation)
5596 /* flock locks entire file so for lockf we need to do the same */
5597 pos = PerlLIO_lseek(fd, (Off_t)0, SEEK_CUR); /* get pos to restore later */
5598 if (pos > 0) /* is seekable and needs to be repositioned */
5599 if (PerlLIO_lseek(fd, (Off_t)0, SEEK_SET) < 0)
5600 pos = -1; /* seek failed, so don't seek back afterwards */
5603 switch (operation) {
5605 /* LOCK_SH - get a shared lock */
5607 /* LOCK_EX - get an exclusive lock */
5609 i = lockf (fd, F_LOCK, 0);
5612 /* LOCK_SH|LOCK_NB - get a non-blocking shared lock */
5613 case LOCK_SH|LOCK_NB:
5614 /* LOCK_EX|LOCK_NB - get a non-blocking exclusive lock */
5615 case LOCK_EX|LOCK_NB:
5616 i = lockf (fd, F_TLOCK, 0);
5618 if ((errno == EAGAIN) || (errno == EACCES))
5619 errno = EWOULDBLOCK;
5622 /* LOCK_UN - unlock (non-blocking is a no-op) */
5624 case LOCK_UN|LOCK_NB:
5625 i = lockf (fd, F_ULOCK, 0);
5628 /* Default - can't decipher operation */
5635 if (pos > 0) /* need to restore position of the handle */
5636 PerlLIO_lseek(fd, pos, SEEK_SET); /* ignore error here */
5641 #endif /* LOCKF_EMULATE_FLOCK */
5645 * c-indentation-style: bsd
5647 * indent-tabs-mode: t
5650 * ex: set ts=8 sts=4 sw=4 noet: