3 * Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
4 * 2004, 2005, 2006, 2007, 2008 by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
12 * But only a short way ahead its floor and the walls on either side were
13 * cloven by a great fissure, out of which the red glare came, now leaping
14 * up, now dying down into darkness; and all the while far below there was
15 * a rumour and a trouble as of great engines throbbing and labouring.
17 * [p.945 of _The Lord of the Rings_, VI/iii: "Mount Doom"]
20 /* This file contains system pp ("push/pop") functions that
21 * execute the opcodes that make up a perl program. A typical pp function
22 * expects to find its arguments on the stack, and usually pushes its
23 * results onto the stack, hence the 'pp' terminology. Each OP structure
24 * contains a pointer to the relevant pp_foo() function.
26 * By 'system', we mean ops which interact with the OS, such as pp_open().
30 #define PERL_IN_PP_SYS_C
35 /* Shadow password support for solaris - pdo@cs.umd.edu
36 * Not just Solaris: at least HP-UX, IRIX, Linux.
37 * The API is from SysV.
39 * There are at least two more shadow interfaces,
40 * see the comments in pp_gpwent().
44 /* There is a MAXINT coming from <shadow.h> <- <hpsecurity.h> <- <values.h>
45 * and another MAXINT from "perl.h" <- <sys/param.h>. */
52 # include <sys/resource.h>
61 # include <sys/select.h>
65 /* XXX Configure test needed.
66 h_errno might not be a simple 'int', especially for multi-threaded
67 applications, see "extern int errno in perl.h". Creating such
68 a test requires taking into account the differences between
69 compiling multithreaded and singlethreaded ($ccflags et al).
70 HOST_NOT_FOUND is typically defined in <netdb.h>.
72 #if defined(HOST_NOT_FOUND) && !defined(h_errno) && !defined(__CYGWIN__)
80 struct passwd *getpwnam (char *);
81 struct passwd *getpwuid (Uid_t);
85 struct passwd *getpwent (void);
86 # elif defined (VMS) && defined (my_getpwent)
87 struct passwd *Perl_my_getpwent (pTHX);
96 struct group *getgrnam (char *);
97 struct group *getgrgid (Gid_t);
101 struct group *getgrent (void);
107 # if defined(_MSC_VER) || defined(__MINGW32__)
108 # include <sys/utime.h>
115 # ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
118 # define my_chsize PerlLIO_chsize
119 #elif defined(HAS_TRUNCATE)
120 # define my_chsize PerlLIO_chsize
122 I32 my_chsize(int fd, Off_t length);
127 #else /* no flock() */
129 /* fcntl.h might not have been included, even if it exists, because
130 the current Configure only sets I_FCNTL if it's needed to pick up
131 the *_OK constants. Make sure it has been included before testing
132 the fcntl() locking constants. */
133 # if defined(HAS_FCNTL) && !defined(I_FCNTL)
137 # if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
138 # define FLOCK fcntl_emulate_flock
139 # define FCNTL_EMULATE_FLOCK
140 # elif defined(HAS_LOCKF)
141 # define FLOCK lockf_emulate_flock
142 # define LOCKF_EMULATE_FLOCK
146 static int FLOCK (int, int);
149 * These are the flock() constants. Since this sytems doesn't have
150 * flock(), the values of the constants are probably not available.
164 # endif /* emulating flock() */
166 #endif /* no flock() */
169 static const char zero_but_true[ZBTLEN + 1] = "0 but true";
171 #if defined(I_SYS_ACCESS) && !defined(R_OK)
172 # include <sys/access.h>
178 /* Missing protos on LynxOS */
179 void sethostent(int);
180 void endhostent(void);
182 void endnetent(void);
183 void setprotoent(int);
184 void endprotoent(void);
185 void setservent(int);
186 void endservent(void);
190 # include "amigaos4/amigaio.h"
193 #undef PERL_EFF_ACCESS /* EFFective uid/gid ACCESS */
195 /* F_OK unused: if stat() cannot find it... */
197 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
198 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
199 # define PERL_EFF_ACCESS(p,f) (access((p), (f) | EFF_ONLY_OK))
202 #if !defined(PERL_EFF_ACCESS) && defined(HAS_EACCESS)
203 # ifdef I_SYS_SECURITY
204 # include <sys/security.h>
208 # define PERL_EFF_ACCESS(p,f) (eaccess((p), (f), ACC_SELF))
211 # define PERL_EFF_ACCESS(p,f) (eaccess((p), (f)))
215 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESSX) && defined(ACC_SELF)
216 /* AIX's accessx() doesn't declare its argument const, unlike every other platform */
217 # define PERL_EFF_ACCESS(p,f) (accessx((char*)(p), (f), ACC_SELF))
221 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) \
222 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
223 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
226 S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
228 const Uid_t ruid = getuid();
229 const Uid_t euid = geteuid();
230 const Gid_t rgid = getgid();
231 const Gid_t egid = getegid();
234 #if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
235 Perl_croak(aTHX_ "switching effective uid is not implemented");
238 if (setreuid(euid, ruid))
239 # elif defined(HAS_SETRESUID)
240 if (setresuid(euid, ruid, (Uid_t)-1))
242 /* diag_listed_as: entering effective %s failed */
243 Perl_croak(aTHX_ "entering effective uid failed");
246 #if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
247 Perl_croak(aTHX_ "switching effective gid is not implemented");
250 if (setregid(egid, rgid))
251 # elif defined(HAS_SETRESGID)
252 if (setresgid(egid, rgid, (Gid_t)-1))
254 /* diag_listed_as: entering effective %s failed */
255 Perl_croak(aTHX_ "entering effective gid failed");
258 res = access(path, mode);
261 if (setreuid(ruid, euid))
262 #elif defined(HAS_SETRESUID)
263 if (setresuid(ruid, euid, (Uid_t)-1))
265 /* diag_listed_as: leaving effective %s failed */
266 Perl_croak(aTHX_ "leaving effective uid failed");
269 if (setregid(rgid, egid))
270 #elif defined(HAS_SETRESGID)
271 if (setresgid(rgid, egid, (Gid_t)-1))
273 /* diag_listed_as: leaving effective %s failed */
274 Perl_croak(aTHX_ "leaving effective gid failed");
278 # define PERL_EFF_ACCESS(p,f) (S_emulate_eaccess(aTHX_ (p), (f)))
285 const char * const tmps = POPpconstx;
286 const U8 gimme = GIMME_V;
287 const char *mode = "r";
290 if (PL_op->op_private & OPpOPEN_IN_RAW)
292 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
294 fp = PerlProc_popen(tmps, mode);
296 const char * const type = Perl_PerlIO_context_layers(aTHX_ NULL);
298 PerlIO_apply_layers(aTHX_ fp,mode,type);
300 if (gimme == G_VOID) {
302 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
305 else if (gimme == G_SCALAR) {
306 ENTER_with_name("backtick");
308 PL_rs = &PL_sv_undef;
309 SvPVCLEAR(TARG); /* note that this preserves previous buffer */
310 while (sv_gets(TARG, fp, SvCUR(TARG)) != NULL)
312 LEAVE_with_name("backtick");
318 SV * const sv = newSV(79);
319 if (sv_gets(sv, fp, 0) == NULL) {
324 if (SvLEN(sv) - SvCUR(sv) > 20) {
325 SvPV_shrink_to_cur(sv);
330 STATUS_NATIVE_CHILD_SET(PerlProc_pclose(fp));
331 TAINT; /* "I believe that this is not gratuitous!" */
334 STATUS_NATIVE_CHILD_SET(-1);
335 if (gimme == G_SCALAR)
346 GV * const gv = (PL_op->op_flags & OPf_SPECIAL) ? NULL : (GV *)POPs;
350 /* make a copy of the pattern if it is gmagical, to ensure that magic
351 * is called once and only once */
352 if (SvGMAGICAL(TOPs)) TOPs = sv_2mortal(newSVsv(TOPs));
354 tryAMAGICunTARGETlist(iter_amg, (PL_op->op_flags & OPf_SPECIAL));
356 if (PL_op->op_flags & OPf_SPECIAL) {
357 /* call Perl-level glob function instead. Stack args are:
359 * and following OPs should be: gv(CORE::GLOBAL::glob), entersub
368 /* Note that we only ever get here if File::Glob fails to load
369 * without at the same time croaking, for some reason, or if
370 * perl was built with PERL_EXTERNAL_GLOB */
372 ENTER_with_name("glob");
377 * The external globbing program may use things we can't control,
378 * so for security reasons we must assume the worst.
381 taint_proper(PL_no_security, "glob");
385 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
388 SAVESPTR(PL_rs); /* This is not permanent, either. */
389 PL_rs = newSVpvs_flags("\000", SVs_TEMP);
392 *SvPVX(PL_rs) = '\n';
396 result = do_readline();
397 LEAVE_with_name("glob");
403 PL_last_in_gv = cGVOP_gv;
404 return do_readline();
414 do_join(TARG, &PL_sv_no, MARK, SP);
418 else if (SP == MARK) {
425 if (SvGMAGICAL(exsv)) exsv = sv_mortalcopy(exsv);
428 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
429 /* well-formed exception supplied */
432 SV * const errsv = ERRSV;
435 if (SvGMAGICAL(errsv)) {
436 exsv = sv_newmortal();
437 sv_setsv_nomg(exsv, errsv);
441 else if (SvPOKp(errsv) ? SvCUR(errsv) : SvNIOKp(errsv)) {
442 exsv = sv_newmortal();
443 sv_setsv_nomg(exsv, errsv);
444 sv_catpvs(exsv, "\t...caught");
447 exsv = newSVpvs_flags("Warning: something's wrong", SVs_TEMP);
450 if (SvROK(exsv) && !PL_warnhook)
451 Perl_warn(aTHX_ "%" SVf, SVfARG(exsv));
463 VMSISH_HUSHED || (PL_curcop->op_private & OPpHUSH_VMSISH);
465 if (SP - MARK != 1) {
467 do_join(TARG, &PL_sv_no, MARK, SP);
475 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
476 /* well-formed exception supplied */
479 SV * const errsv = ERRSV;
483 if (sv_isobject(exsv)) {
484 HV * const stash = SvSTASH(SvRV(exsv));
485 GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
487 SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
488 SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
495 call_sv(MUTABLE_SV(GvCV(gv)),
496 G_SCALAR|G_EVAL|G_KEEPERR);
497 exsv = sv_mortalcopy(*PL_stack_sp--);
501 else if (SvOK(errsv) && (SvPV_nomg(errsv,len), len)) {
502 exsv = sv_mortalcopy(errsv);
503 sv_catpvs(exsv, "\t...propagated");
506 exsv = newSVpvs_flags("Died", SVs_TEMP);
510 NOT_REACHED; /* NOTREACHED */
511 return NULL; /* avoid missing return from non-void function warning */
517 Perl_tied_method(pTHX_ SV *methname, SV **sp, SV *const sv,
518 const MAGIC *const mg, const U32 flags, U32 argc, ...)
524 PERL_ARGS_ASSERT_TIED_METHOD;
526 /* Ensure that our flag bits do not overlap. */
527 STATIC_ASSERT_STMT((TIED_METHOD_MORTALIZE_NOT_NEEDED & G_WANT) == 0);
528 STATIC_ASSERT_STMT((TIED_METHOD_ARGUMENTS_ON_STACK & G_WANT) == 0);
529 STATIC_ASSERT_STMT((TIED_METHOD_SAY & G_WANT) == 0);
531 PUTBACK; /* sp is at *foot* of args, so this pops args from old stack */
532 PUSHSTACKi(PERLSI_MAGIC);
533 /* extend for object + args. If argc might wrap/truncate when cast
534 * to SSize_t and incremented, set to -1, which will trigger a panic in
536 * The weird way this is written is because g++ is dumb enough to
537 * warn "comparison is always false" on something like:
539 * sizeof(a) >= sizeof(b) && a >= B_t_MAX -1
541 * (where the LH condition is false)
544 (argc > (sizeof(argc) >= sizeof(SSize_t) ? SSize_t_MAX - 1 : argc))
545 ? -1 : (SSize_t)argc + 1;
546 EXTEND(SP, extend_size);
548 PUSHs(SvTIED_obj(sv, mg));
549 if (flags & TIED_METHOD_ARGUMENTS_ON_STACK) {
550 Copy(orig_sp + 2, sp + 1, argc, SV*); /* copy args to new stack */
554 const U32 mortalize_not_needed
555 = flags & TIED_METHOD_MORTALIZE_NOT_NEEDED;
557 va_start(args, argc);
559 SV *const arg = va_arg(args, SV *);
560 if(mortalize_not_needed)
569 ENTER_with_name("call_tied_method");
570 if (flags & TIED_METHOD_SAY) {
571 /* local $\ = "\n" */
572 SAVEGENERICSV(PL_ors_sv);
573 PL_ors_sv = newSVpvs("\n");
575 ret_args = call_sv(methname, (flags & G_WANT)|G_METHOD_NAMED);
580 if (ret_args) { /* copy results back to original stack */
581 EXTEND(sp, ret_args);
582 Copy(orig_sp - ret_args + 1, sp + 1, ret_args, SV*);
586 LEAVE_with_name("call_tied_method");
590 #define tied_method0(a,b,c,d) \
591 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,0)
592 #define tied_method1(a,b,c,d,e) \
593 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,1,e)
594 #define tied_method2(a,b,c,d,e,f) \
595 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,2,e,f)
608 GV * const gv = MUTABLE_GV(*++MARK);
610 if (!isGV(gv) && !(SvTYPE(gv) == SVt_PVLV && isGV_with_GP(gv)))
611 DIE(aTHX_ PL_no_usym, "filehandle");
613 if ((io = GvIOp(gv))) {
615 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
618 Perl_croak(aTHX_ "Cannot open %" HEKf " as a filehandle: it is already open as a dirhandle",
619 HEKfARG(GvENAME_HEK(gv)));
621 mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
623 /* Method's args are same as ours ... */
624 /* ... except handle is replaced by the object */
625 return Perl_tied_method(aTHX_ SV_CONST(OPEN), mark - 1, MUTABLE_SV(io), mg,
626 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
638 tmps = SvPV_const(sv, len);
639 ok = do_open6(gv, tmps, len, NULL, MARK+1, (SP-MARK));
642 PUSHi( (I32)PL_forkprocess );
643 else if (PL_forkprocess == 0) /* we are a new child */
653 /* pp_coreargs pushes a NULL to indicate no args passed to
656 MAXARG == 0 || (!TOPs && !POPs) ? PL_defoutgv : MUTABLE_GV(POPs);
662 IO * const io = GvIO(gv);
664 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
666 return tied_method0(SV_CONST(CLOSE), SP, MUTABLE_SV(io), mg);
670 PUSHs(boolSV(do_close(gv, TRUE)));
682 GV * const wgv = MUTABLE_GV(POPs);
683 GV * const rgv = MUTABLE_GV(POPs);
687 do_close(rgv, FALSE);
691 do_close(wgv, FALSE);
693 if (PerlProc_pipe_cloexec(fd) < 0)
696 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r" PIPE_OPEN_MODE);
697 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w" PIPE_OPEN_MODE);
698 IoOFP(rstio) = IoIFP(rstio);
699 IoIFP(wstio) = IoOFP(wstio);
700 IoTYPE(rstio) = IoTYPE_RDONLY;
701 IoTYPE(wstio) = IoTYPE_WRONLY;
703 if (!IoIFP(rstio) || !IoOFP(wstio)) {
705 PerlIO_close(IoIFP(rstio));
707 PerlLIO_close(fd[0]);
709 PerlIO_close(IoOFP(wstio));
711 PerlLIO_close(fd[1]);
719 DIE(aTHX_ PL_no_func, "pipe");
733 gv = MUTABLE_GV(POPs);
737 && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar)))
739 return tied_method0(SV_CONST(FILENO), SP, MUTABLE_SV(io), mg);
742 if (io && IoDIRP(io)) {
743 #if defined(HAS_DIRFD) || defined(HAS_DIR_DD_FD)
744 PUSHi(my_dirfd(IoDIRP(io)));
746 #elif defined(ENOTSUP)
747 errno = ENOTSUP; /* Operation not supported */
749 #elif defined(EOPNOTSUPP)
750 errno = EOPNOTSUPP; /* Operation not supported on socket */
753 errno = EINVAL; /* Invalid argument */
758 if (!io || !(fp = IoIFP(io))) {
759 /* Can't do this because people seem to do things like
760 defined(fileno($foo)) to check whether $foo is a valid fh.
767 PUSHi(PerlIO_fileno(fp));
778 if (MAXARG < 1 || (!TOPs && !POPs)) {
779 anum = PerlLIO_umask(022);
780 /* setting it to 022 between the two calls to umask avoids
781 * to have a window where the umask is set to 0 -- meaning
782 * that another thread could create world-writeable files. */
784 (void)PerlLIO_umask(anum);
787 anum = PerlLIO_umask(POPi);
788 TAINT_PROPER("umask");
791 /* Only DIE if trying to restrict permissions on "user" (self).
792 * Otherwise it's harmless and more useful to just return undef
793 * since 'group' and 'other' concepts probably don't exist here. */
794 if (MAXARG >= 1 && (TOPs||POPs) && (POPi & 0700))
795 DIE(aTHX_ "umask not implemented");
796 XPUSHs(&PL_sv_undef);
815 gv = MUTABLE_GV(POPs);
819 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
821 /* This takes advantage of the implementation of the varargs
822 function, which I don't think that the optimiser will be able to
823 figure out. Although, as it's a static function, in theory it
825 return Perl_tied_method(aTHX_ SV_CONST(BINMODE), SP, MUTABLE_SV(io), mg,
826 G_SCALAR|TIED_METHOD_MORTALIZE_NOT_NEEDED,
827 discp ? 1 : 0, discp);
831 if (!io || !(fp = IoIFP(io))) {
833 SETERRNO(EBADF,RMS_IFI);
840 const char *d = NULL;
843 d = SvPV_const(discp, len);
844 mode = mode_from_discipline(d, len);
845 if (PerlIO_binmode(aTHX_ fp, IoTYPE(io), mode, d)) {
846 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
847 if (!PerlIO_binmode(aTHX_ IoOFP(io), IoTYPE(io), mode, d)) {
868 const I32 markoff = MARK - PL_stack_base;
869 const char *methname;
870 int how = PERL_MAGIC_tied;
874 switch(SvTYPE(varsv)) {
878 methname = "TIEHASH";
879 if (HvLAZYDEL(varsv) && (entry = HvEITER((HV *)varsv))) {
880 HvLAZYDEL_off(varsv);
881 hv_free_ent((HV *)varsv, entry);
883 HvEITER_set(MUTABLE_HV(varsv), 0);
887 methname = "TIEARRAY";
888 if (!AvREAL(varsv)) {
890 Perl_croak(aTHX_ "Cannot tie unreifiable array");
891 av_clear((AV *)varsv);
898 if (isGV_with_GP(varsv) && !SvFAKE(varsv)) {
899 methname = "TIEHANDLE";
900 how = PERL_MAGIC_tiedscalar;
901 /* For tied filehandles, we apply tiedscalar magic to the IO
902 slot of the GP rather than the GV itself. AMS 20010812 */
904 GvIOp(varsv) = newIO();
905 varsv = MUTABLE_SV(GvIOp(varsv));
908 if (SvTYPE(varsv) == SVt_PVLV && LvTYPE(varsv) == 'y') {
909 vivify_defelem(varsv);
910 varsv = LvTARG(varsv);
914 methname = "TIESCALAR";
915 how = PERL_MAGIC_tiedscalar;
919 if (sv_isobject(*MARK)) { /* Calls GET magic. */
920 ENTER_with_name("call_TIE");
921 PUSHSTACKi(PERLSI_MAGIC);
923 EXTEND(SP,(I32)items);
927 call_method(methname, G_SCALAR);
930 /* Can't use call_method here, else this: fileno FOO; tie @a, "FOO"
931 * will attempt to invoke IO::File::TIEARRAY, with (best case) the
932 * wrong error message, and worse case, supreme action at a distance.
933 * (Sorry obfuscation writers. You're not going to be given this one.)
935 stash = gv_stashsv(*MARK, 0);
938 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%" SVf "\"",
939 methname, SVfARG(*MARK));
940 else if (isGV(*MARK)) {
941 /* If the glob doesn't name an existing package, using
942 * SVfARG(*MARK) would yield "*Foo::Bar" or *main::Foo. So
943 * generate the name for the error message explicitly. */
944 SV *stashname = sv_2mortal(newSV(0));
945 gv_fullname4(stashname, (GV *) *MARK, NULL, FALSE);
946 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%" SVf "\"",
947 methname, SVfARG(stashname));
950 SV *stashname = !SvPOK(*MARK) ? &PL_sv_no
951 : SvCUR(*MARK) ? *MARK
952 : sv_2mortal(newSVpvs("main"));
953 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%" SVf "\""
954 " (perhaps you forgot to load \"%" SVf "\"?)",
955 methname, SVfARG(stashname), SVfARG(stashname));
958 else if (!(gv = gv_fetchmethod(stash, methname))) {
959 /* The effective name can only be NULL for stashes that have
960 * been deleted from the symbol table, which this one can't
961 * be, since we just looked it up by name.
963 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%" HEKf "\"",
964 methname, HvENAME_HEK_NN(stash));
966 ENTER_with_name("call_TIE");
967 PUSHSTACKi(PERLSI_MAGIC);
969 EXTEND(SP,(I32)items);
973 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
979 if (sv_isobject(sv)) {
980 sv_unmagic(varsv, how);
981 /* Croak if a self-tie on an aggregate is attempted. */
982 if (varsv == SvRV(sv) &&
983 (SvTYPE(varsv) == SVt_PVAV ||
984 SvTYPE(varsv) == SVt_PVHV))
986 "Self-ties of arrays and hashes are not supported");
987 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
989 LEAVE_with_name("call_TIE");
990 SP = PL_stack_base + markoff;
996 /* also used for: pp_dbmclose() */
1003 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
1004 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
1006 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
1009 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y' &&
1010 !(sv = defelem_target(sv, NULL))) RETPUSHUNDEF;
1012 if ((mg = SvTIED_mg(sv, how))) {
1013 SV * const obj = SvRV(SvTIED_obj(sv, mg));
1014 if (obj && SvSTASH(obj)) {
1015 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
1017 if (gv && isGV(gv) && (cv = GvCV(gv))) {
1019 PUSHs(SvTIED_obj(MUTABLE_SV(gv), mg));
1020 mXPUSHi(SvREFCNT(obj) - 1);
1022 ENTER_with_name("call_UNTIE");
1023 call_sv(MUTABLE_SV(cv), G_VOID);
1024 LEAVE_with_name("call_UNTIE");
1027 else if (mg && SvREFCNT(obj) > 1) {
1028 Perl_ck_warner(aTHX_ packWARN(WARN_UNTIE),
1029 "untie attempted while %" UVuf " inner references still exist",
1030 (UV)SvREFCNT(obj) - 1 ) ;
1034 sv_unmagic(sv, how) ;
1043 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
1044 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
1046 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
1049 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y' &&
1050 !(sv = defelem_target(sv, NULL))) goto ret_undef;
1052 if ((mg = SvTIED_mg(sv, how))) {
1053 SETs(SvTIED_obj(sv, mg));
1054 return NORMAL; /* PUTBACK not needed, pp_tied never moves SP */
1068 HV * const hv = MUTABLE_HV(POPs);
1069 SV * const sv = newSVpvs_flags("AnyDBM_File", SVs_TEMP);
1070 stash = gv_stashsv(sv, 0);
1071 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
1073 require_pv("AnyDBM_File.pm");
1075 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH")))
1076 DIE(aTHX_ "No dbm on this machine");
1086 mPUSHu(O_RDWR|O_CREAT);
1090 if (!SvOK(right)) right = &PL_sv_no;
1094 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
1097 if (!sv_isobject(TOPs)) {
1105 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
1107 if (sv_isobject(TOPs))
1112 sv_unmagic(MUTABLE_SV(hv), PERL_MAGIC_tied);
1113 sv_magic(MUTABLE_SV(hv), TOPs, PERL_MAGIC_tied, NULL, 0);
1130 struct timeval timebuf;
1131 struct timeval *tbuf = &timebuf;
1135 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1140 # if BYTEORDER & 0xf0000
1141 # define ORDERBYTE (0x88888888 - BYTEORDER)
1143 # define ORDERBYTE (0x4444 - BYTEORDER)
1149 for (i = 1; i <= 3; i++) {
1150 SV * const sv = svs[i] = SP[i];
1154 if (SvREADONLY(sv)) {
1155 if (!(SvPOK(sv) && SvCUR(sv) == 0))
1156 Perl_croak_no_modify();
1158 else if (SvIsCOW(sv)) sv_force_normal_flags(sv, 0);
1161 Perl_ck_warner(aTHX_ packWARN(WARN_MISC),
1162 "Non-string passed as bitmask");
1163 if (SvGAMAGIC(sv)) {
1164 svs[i] = sv_newmortal();
1165 sv_copypv_nomg(svs[i], sv);
1168 SvPV_force_nomg_nolen(sv); /* force string conversion */
1175 /* little endians can use vecs directly */
1176 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1183 masksize = NFDBITS / NBBY;
1185 masksize = sizeof(long); /* documented int, everyone seems to use long */
1187 Zero(&fd_sets[0], 4, char*);
1190 # if SELECT_MIN_BITS == 1
1191 growsize = sizeof(fd_set);
1193 # if defined(__GLIBC__) && defined(__FD_SETSIZE)
1194 # undef SELECT_MIN_BITS
1195 # define SELECT_MIN_BITS __FD_SETSIZE
1197 /* If SELECT_MIN_BITS is greater than one we most probably will want
1198 * to align the sizes with SELECT_MIN_BITS/8 because for example
1199 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
1200 * UNIX, Solaris, Darwin) the smallest quantum select() operates
1201 * on (sets/tests/clears bits) is 32 bits. */
1202 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
1208 value = SvNV_nomg(sv);
1211 timebuf.tv_sec = (long)value;
1212 value -= (NV)timebuf.tv_sec;
1213 timebuf.tv_usec = (long)(value * 1000000.0);
1218 for (i = 1; i <= 3; i++) {
1220 if (!SvOK(sv) || SvCUR(sv) == 0) {
1227 Sv_Grow(sv, growsize);
1231 while (++j <= growsize) {
1235 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1237 Newx(fd_sets[i], growsize, char);
1238 for (offset = 0; offset < growsize; offset += masksize) {
1239 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1240 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1243 fd_sets[i] = SvPVX(sv);
1247 #ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1248 /* Can't make just the (void*) conditional because that would be
1249 * cpp #if within cpp macro, and not all compilers like that. */
1250 nfound = PerlSock_select(
1252 (Select_fd_set_t) fd_sets[1],
1253 (Select_fd_set_t) fd_sets[2],
1254 (Select_fd_set_t) fd_sets[3],
1255 (void*) tbuf); /* Workaround for compiler bug. */
1257 nfound = PerlSock_select(
1259 (Select_fd_set_t) fd_sets[1],
1260 (Select_fd_set_t) fd_sets[2],
1261 (Select_fd_set_t) fd_sets[3],
1264 for (i = 1; i <= 3; i++) {
1267 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1269 for (offset = 0; offset < growsize; offset += masksize) {
1270 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1271 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1273 Safefree(fd_sets[i]);
1276 SvSetMagicSV(SP[i], sv);
1283 if (GIMME_V == G_ARRAY && tbuf) {
1284 value = (NV)(timebuf.tv_sec) +
1285 (NV)(timebuf.tv_usec) / 1000000.0;
1290 DIE(aTHX_ "select not implemented");
1296 =for apidoc_section GV Handling
1298 =for apidoc setdefout
1300 Sets C<PL_defoutgv>, the default file handle for output, to the passed in
1301 typeglob. As C<PL_defoutgv> "owns" a reference on its typeglob, the reference
1302 count of the passed in typeglob is increased by one, and the reference count
1303 of the typeglob that C<PL_defoutgv> points to is decreased by one.
1309 Perl_setdefout(pTHX_ GV *gv)
1311 GV *oldgv = PL_defoutgv;
1313 PERL_ARGS_ASSERT_SETDEFOUT;
1315 SvREFCNT_inc_simple_void_NN(gv);
1317 SvREFCNT_dec(oldgv);
1324 GV * const newdefout = (PL_op->op_private > 0) ? (MUTABLE_GV(POPs)) : NULL;
1325 GV * egv = GvEGVx(PL_defoutgv);
1330 hv = isGV_with_GP(egv) ? GvSTASH(egv) : NULL;
1331 gvp = hv && HvENAME(hv)
1332 ? (GV**)hv_fetch(hv, GvNAME(egv), HEK_UTF8(GvNAME_HEK(egv)) ? -GvNAMELEN(egv) : GvNAMELEN(egv), FALSE)
1334 if (gvp && *gvp == egv) {
1335 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
1339 mXPUSHs(newRV(MUTABLE_SV(egv)));
1343 if (!GvIO(newdefout))
1344 gv_IOadd(newdefout);
1345 setdefout(newdefout);
1354 /* pp_coreargs pushes a NULL to indicate no args passed to
1357 MAXARG==0 || (!TOPs && !POPs) ? PL_stdingv : MUTABLE_GV(POPs);
1358 IO *const io = GvIO(gv);
1364 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1366 const U8 gimme = GIMME_V;
1367 Perl_tied_method(aTHX_ SV_CONST(GETC), SP, MUTABLE_SV(io), mg, gimme, 0);
1368 if (gimme == G_SCALAR) {
1370 SvSetMagicSV_nosteal(TARG, TOPs);
1375 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
1376 if (!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
1378 SETERRNO(EBADF,RMS_IFI);
1382 sv_setpvs(TARG, " ");
1383 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
1384 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1385 /* Find out how many bytes the char needs */
1386 Size_t len = UTF8SKIP(SvPVX_const(TARG));
1389 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1390 SvCUR_set(TARG,1+len);
1394 else SvUTF8_off(TARG);
1400 S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
1403 const U8 gimme = GIMME_V;
1405 PERL_ARGS_ASSERT_DOFORM;
1408 cv = MUTABLE_CV(sv_2mortal(MUTABLE_SV(cv_clone(cv))));
1410 cx = cx_pushblock(CXt_FORMAT, gimme, PL_stack_sp, PL_savestack_ix);
1411 cx_pushformat(cx, cv, retop, gv);
1412 if (CvDEPTH(cv) >= 2)
1413 pad_push(CvPADLIST(cv), CvDEPTH(cv));
1414 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), CvDEPTH(cv));
1416 setdefout(gv); /* locally select filehandle so $% et al work */
1433 gv = MUTABLE_GV(POPs);
1450 SV * const tmpsv = sv_newmortal();
1451 gv_efullname4(tmpsv, fgv, NULL, FALSE);
1452 DIE(aTHX_ "Undefined format \"%" SVf "\" called", SVfARG(tmpsv));
1454 IoFLAGS(io) &= ~IOf_DIDTOP;
1455 RETURNOP(doform(cv,gv,PL_op->op_next));
1461 GV * const gv = CX_CUR()->blk_format.gv;
1462 IO * const io = GvIOp(gv);
1467 bool is_return = cBOOL(PL_op->op_type == OP_RETURN);
1469 if (is_return || !io || !(ofp = IoOFP(io)))
1472 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
1473 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
1475 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1476 PL_formtarget != PL_toptarget)
1480 if (!IoTOP_GV(io)) {
1483 if (!IoTOP_NAME(io)) {
1485 if (!IoFMT_NAME(io))
1486 IoFMT_NAME(io) = savepv(GvNAME(gv));
1487 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%" HEKf "_TOP",
1488 HEKfARG(GvNAME_HEK(gv))));
1489 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
1490 if ((topgv && GvFORM(topgv)) ||
1491 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
1492 IoTOP_NAME(io) = savesvpv(topname);
1494 IoTOP_NAME(io) = savepvs("top");
1496 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
1497 if (!topgv || !GvFORM(topgv)) {
1498 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1501 IoTOP_GV(io) = topgv;
1503 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1504 I32 lines = IoLINES_LEFT(io);
1505 const char *s = SvPVX_const(PL_formtarget);
1506 const char *e = SvEND(PL_formtarget);
1507 if (lines <= 0) /* Yow, header didn't even fit!!! */
1509 while (lines-- > 0) {
1510 s = (char *) memchr(s, '\n', e - s);
1516 const STRLEN save = SvCUR(PL_formtarget);
1517 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
1518 do_print(PL_formtarget, ofp);
1519 SvCUR_set(PL_formtarget, save);
1520 sv_chop(PL_formtarget, s);
1521 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
1524 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
1525 do_print(GvSV(gv_fetchpvs("\f", GV_ADD, SVt_PV)), ofp);
1526 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1528 PL_formtarget = PL_toptarget;
1529 IoFLAGS(io) |= IOf_DIDTOP;
1531 assert(fgv); /* IoTOP_GV(io) should have been set above */
1534 SV * const sv = sv_newmortal();
1535 gv_efullname4(sv, fgv, NULL, FALSE);
1536 DIE(aTHX_ "Undefined top format \"%" SVf "\" called", SVfARG(sv));
1538 return doform(cv, gv, PL_op);
1543 assert(CxTYPE(cx) == CXt_FORMAT);
1544 SP = PL_stack_base + cx->blk_oldsp; /* ignore retval of formline */
1548 retop = cx->blk_sub.retop;
1554 /* XXX the semantics of doing 'return' in a format aren't documented.
1555 * Currently we ignore any args to 'return' and just return
1556 * a single undef in both scalar and list contexts
1558 PUSHs(&PL_sv_undef);
1559 else if (!io || !(fp = IoOFP(io))) {
1560 if (io && IoIFP(io))
1561 report_wrongway_fh(gv, '<');
1567 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
1568 Perl_ck_warner(aTHX_ packWARN(WARN_IO), "page overflow");
1570 if (!do_print(PL_formtarget, fp))
1573 FmLINES(PL_formtarget) = 0;
1574 SvCUR_set(PL_formtarget, 0);
1575 *SvEND(PL_formtarget) = '\0';
1576 if (IoFLAGS(io) & IOf_FLUSH)
1577 (void)PerlIO_flush(fp);
1581 PL_formtarget = PL_bodytarget;
1587 dSP; dMARK; dORIGMARK;
1591 = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv;
1592 IO *const io = GvIO(gv);
1594 /* Treat empty list as "" */
1595 if (MARK == SP) XPUSHs(&PL_sv_no);
1598 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1600 if (MARK == ORIGMARK) {
1603 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1606 return Perl_tied_method(aTHX_ SV_CONST(PRINTF), mark - 1, MUTABLE_SV(io),
1608 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1615 SETERRNO(EBADF,RMS_IFI);
1618 else if (!(fp = IoOFP(io))) {
1620 report_wrongway_fh(gv, '<');
1621 else if (ckWARN(WARN_CLOSED))
1623 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
1627 SV *sv = sv_newmortal();
1628 do_sprintf(sv, SP - MARK, MARK + 1);
1629 if (!do_print(sv, fp))
1632 if (IoFLAGS(io) & IOf_FLUSH)
1633 if (PerlIO_flush(fp) == EOF)
1642 PUSHs(&PL_sv_undef);
1649 const int perm = (MAXARG > 3 && (TOPs || POPs)) ? POPi : 0666;
1650 const int mode = POPi;
1651 SV * const sv = POPs;
1652 GV * const gv = MUTABLE_GV(POPs);
1655 /* Need TIEHANDLE method ? */
1656 const char * const tmps = SvPV_const(sv, len);
1657 if (do_open_raw(gv, tmps, len, mode, perm, NULL)) {
1658 IoLINES(GvIOp(gv)) = 0;
1662 PUSHs(&PL_sv_undef);
1668 /* also used for: pp_read() and pp_recv() (where supported) */
1672 dSP; dMARK; dORIGMARK; dTARGET;
1686 bool charstart = FALSE;
1687 STRLEN charskip = 0;
1689 GV * const gv = MUTABLE_GV(*++MARK);
1692 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1693 && gv && (io = GvIO(gv)) )
1695 const MAGIC *const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1697 return Perl_tied_method(aTHX_ SV_CONST(READ), mark - 1, MUTABLE_SV(io), mg,
1698 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1708 length = SvIVx(*++MARK);
1710 DIE(aTHX_ "Negative length");
1713 offset = SvIVx(*++MARK);
1717 if (!io || !IoIFP(io)) {
1719 SETERRNO(EBADF,RMS_IFI);
1723 /* Note that fd can here validly be -1, don't check it yet. */
1724 fd = PerlIO_fileno(IoIFP(io));
1726 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
1727 if (PL_op->op_type == OP_SYSREAD || PL_op->op_type == OP_RECV) {
1729 "%s() isn't allowed on :utf8 handles",
1732 buffer = SvPVutf8_force(bufsv, blen);
1733 /* UTF-8 may not have been set if they are all low bytes */
1738 buffer = SvPV_force(bufsv, blen);
1739 buffer_utf8 = DO_UTF8(bufsv);
1741 if (DO_UTF8(bufsv)) {
1742 blen = sv_len_utf8_nomg(bufsv);
1751 if (PL_op->op_type == OP_RECV) {
1752 Sock_size_t bufsize;
1753 char namebuf[MAXPATHLEN];
1755 SETERRNO(EBADF,SS_IVCHAN);
1758 #if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
1759 bufsize = sizeof (struct sockaddr_in);
1761 bufsize = sizeof namebuf;
1763 #ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1767 buffer = SvGROW(bufsv, (STRLEN)(length+1));
1768 /* 'offset' means 'flags' here */
1769 count = PerlSock_recvfrom(fd, buffer, length, offset,
1770 (struct sockaddr *)namebuf, &bufsize);
1773 /* MSG_TRUNC can give oversized count; quietly lose it */
1776 SvCUR_set(bufsv, count);
1777 *SvEND(bufsv) = '\0';
1778 (void)SvPOK_only(bufsv);
1782 /* This should not be marked tainted if the fp is marked clean */
1783 if (!(IoFLAGS(io) & IOf_UNTAINT))
1784 SvTAINTED_on(bufsv);
1786 #if defined(__CYGWIN__)
1787 /* recvfrom() on cygwin doesn't set bufsize at all for
1788 connected sockets, leaving us with trash in the returned
1789 name, so use the same test as the Win32 code to check if it
1790 wasn't set, and set it [perl #118843] */
1791 if (bufsize == sizeof namebuf)
1794 sv_setpvn(TARG, namebuf, bufsize);
1800 if (-offset > (SSize_t)blen)
1801 DIE(aTHX_ "Offset outside string");
1804 if (DO_UTF8(bufsv)) {
1805 /* convert offset-as-chars to offset-as-bytes */
1806 if (offset >= (SSize_t)blen)
1807 offset += SvCUR(bufsv) - blen;
1809 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
1813 /* Reestablish the fd in case it shifted from underneath us. */
1814 fd = PerlIO_fileno(IoIFP(io));
1816 orig_size = SvCUR(bufsv);
1817 /* Allocating length + offset + 1 isn't perfect in the case of reading
1818 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1820 (should be 2 * length + offset + 1, or possibly something longer if
1821 IN_ENCODING Is true) */
1822 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
1823 if (offset > 0 && offset > (SSize_t)orig_size) { /* Zero any newly allocated space */
1824 Zero(buffer+orig_size, offset-orig_size, char);
1826 buffer = buffer + offset;
1828 read_target = bufsv;
1830 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1831 concatenate it to the current buffer. */
1833 /* Truncate the existing buffer to the start of where we will be
1835 SvCUR_set(bufsv, offset);
1837 read_target = sv_newmortal();
1838 SvUPGRADE(read_target, SVt_PV);
1839 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1842 if (PL_op->op_type == OP_SYSREAD) {
1843 #ifdef PERL_SOCK_SYSREAD_IS_RECV
1844 if (IoTYPE(io) == IoTYPE_SOCKET) {
1846 SETERRNO(EBADF,SS_IVCHAN);
1850 count = PerlSock_recv(fd, buffer, length, 0);
1856 SETERRNO(EBADF,RMS_IFI);
1860 count = PerlLIO_read(fd, buffer, length);
1865 count = PerlIO_read(IoIFP(io), buffer, length);
1866 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1867 if (count == 0 && PerlIO_error(IoIFP(io)))
1871 if (IoTYPE(io) == IoTYPE_WRONLY)
1872 report_wrongway_fh(gv, '>');
1875 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1876 *SvEND(read_target) = '\0';
1877 (void)SvPOK_only(read_target);
1878 if (fp_utf8 && !IN_BYTES) {
1879 /* Look at utf8 we got back and count the characters */
1880 const char *bend = buffer + count;
1881 while (buffer < bend) {
1883 skip = UTF8SKIP(buffer);
1886 if (buffer - charskip + skip > bend) {
1887 /* partial character - try for rest of it */
1888 length = skip - (bend-buffer);
1889 offset = bend - SvPVX_const(bufsv);
1901 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1902 provided amount read (count) was what was requested (length)
1904 if (got < wanted && count == length) {
1905 length = wanted - got;
1906 offset = bend - SvPVX_const(bufsv);
1909 /* return value is character count */
1913 else if (buffer_utf8) {
1914 /* Let svcatsv upgrade the bytes we read in to utf8.
1915 The buffer is a mortal so will be freed soon. */
1916 sv_catsv_nomg(bufsv, read_target);
1919 /* This should not be marked tainted if the fp is marked clean */
1920 if (!(IoFLAGS(io) & IOf_UNTAINT))
1921 SvTAINTED_on(bufsv);
1932 /* also used for: pp_send() where defined */
1936 dSP; dMARK; dORIGMARK; dTARGET;
1941 const int op_type = PL_op->op_type;
1944 GV *const gv = MUTABLE_GV(*++MARK);
1945 IO *const io = GvIO(gv);
1948 if (op_type == OP_SYSWRITE && io) {
1949 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1951 if (MARK == SP - 1) {
1953 mXPUSHi(sv_len(sv));
1957 return Perl_tied_method(aTHX_ SV_CONST(WRITE), mark - 1, MUTABLE_SV(io), mg,
1958 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1968 if (!io || !IoIFP(io) || IoTYPE(io) == IoTYPE_RDONLY) {
1970 if (io && IoIFP(io))
1971 report_wrongway_fh(gv, '<');
1974 SETERRNO(EBADF,RMS_IFI);
1977 fd = PerlIO_fileno(IoIFP(io));
1979 SETERRNO(EBADF,SS_IVCHAN);
1984 /* Do this first to trigger any overloading. */
1985 buffer = SvPV_const(bufsv, blen);
1986 doing_utf8 = DO_UTF8(bufsv);
1988 if (PerlIO_isutf8(IoIFP(io))) {
1990 "%s() isn't allowed on :utf8 handles",
1993 else if (doing_utf8) {
1994 STRLEN tmplen = blen;
1995 U8 * const result = bytes_from_utf8((const U8*) buffer, &tmplen, &doing_utf8);
1998 buffer = (char *) tmpbuf;
2002 assert((char *)result == buffer);
2003 Perl_croak(aTHX_ "Wide character in %s", OP_DESC(PL_op));
2008 if (op_type == OP_SEND) {
2009 const int flags = SvIVx(*++MARK);
2012 char * const sockbuf = SvPVx(*++MARK, mlen);
2013 retval = PerlSock_sendto(fd, buffer, blen,
2014 flags, (struct sockaddr *)sockbuf, mlen);
2017 retval = PerlSock_send(fd, buffer, blen, flags);
2023 Size_t length = 0; /* This length is in characters. */
2029 #if Size_t_size > IVSIZE
2030 length = (Size_t)SvNVx(*++MARK);
2032 length = (Size_t)SvIVx(*++MARK);
2034 if ((SSize_t)length < 0) {
2036 DIE(aTHX_ "Negative length");
2041 offset = SvIVx(*++MARK);
2043 if (-offset > (IV)blen) {
2045 DIE(aTHX_ "Offset outside string");
2048 } else if (offset > (IV)blen) {
2050 DIE(aTHX_ "Offset outside string");
2054 if (length > blen - offset)
2055 length = blen - offset;
2056 buffer = buffer+offset;
2058 #ifdef PERL_SOCK_SYSWRITE_IS_SEND
2059 if (IoTYPE(io) == IoTYPE_SOCKET) {
2060 retval = PerlSock_send(fd, buffer, length, 0);
2065 /* See the note at doio.c:do_print about filesize limits. --jhi */
2066 retval = PerlLIO_write(fd, buffer, length);
2075 #if Size_t_size > IVSIZE
2095 * in Perl 5.12 and later, the additional parameter is a bitmask:
2098 * 2 = eof() <- ARGV magic
2100 * I'll rely on the compiler's trace flow analysis to decide whether to
2101 * actually assign this out here, or punt it into the only block where it is
2102 * used. Doing it out here is DRY on the condition logic.
2107 gv = PL_last_in_gv = MUTABLE_GV(POPs); /* eof(FH) */
2113 if (PL_op->op_flags & OPf_SPECIAL) {
2114 gv = PL_last_in_gv = GvEGVx(PL_argvgv); /* eof() - ARGV magic */
2118 gv = PL_last_in_gv; /* eof */
2126 if ((io = GvIO(gv)) && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) {
2127 return tied_method1(SV_CONST(EOF), SP, MUTABLE_SV(io), mg, newSVuv(which));
2130 if (!MAXARG && (PL_op->op_flags & OPf_SPECIAL)) { /* eof() */
2131 if (io && !IoIFP(io)) {
2132 if ((IoFLAGS(io) & IOf_START) && av_count(GvAVn(gv)) == 0) {
2135 IoFLAGS(io) &= ~IOf_START;
2136 do_open6(gv, "-", 1, NULL, NULL, 0);
2144 *svp = newSVpvs("-");
2146 else if (!nextargv(gv, FALSE))
2151 PUSHs(boolSV(do_eof(gv)));
2161 if (MAXARG != 0 && (TOPs || POPs))
2162 PL_last_in_gv = MUTABLE_GV(POPs);
2169 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
2171 return tied_method0(SV_CONST(TELL), SP, MUTABLE_SV(io), mg);
2176 SETERRNO(EBADF,RMS_IFI);
2181 #if LSEEKSIZE > IVSIZE
2182 PUSHn( (NV)do_tell(gv) );
2184 PUSHi( (IV)do_tell(gv) );
2190 /* also used for: pp_seek() */
2195 const int whence = POPi;
2196 #if LSEEKSIZE > IVSIZE
2197 const Off_t offset = (Off_t)SvNVx(POPs);
2199 const Off_t offset = (Off_t)SvIVx(POPs);
2202 GV * const gv = PL_last_in_gv = MUTABLE_GV(POPs);
2203 IO *const io = GvIO(gv);
2206 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
2208 #if LSEEKSIZE > IVSIZE
2209 SV *const offset_sv = newSVnv((NV) offset);
2211 SV *const offset_sv = newSViv(offset);
2214 return tied_method2(SV_CONST(SEEK), SP, MUTABLE_SV(io), mg, offset_sv,
2219 if (PL_op->op_type == OP_SEEK)
2220 PUSHs(boolSV(do_seek(gv, offset, whence)));
2222 const Off_t sought = do_sysseek(gv, offset, whence);
2224 PUSHs(&PL_sv_undef);
2226 SV* const sv = sought ?
2227 #if LSEEKSIZE > IVSIZE
2232 : newSVpvn(zero_but_true, ZBTLEN);
2242 /* There seems to be no consensus on the length type of truncate()
2243 * and ftruncate(), both off_t and size_t have supporters. In
2244 * general one would think that when using large files, off_t is
2245 * at least as wide as size_t, so using an off_t should be okay. */
2246 /* XXX Configure probe for the length type of *truncate() needed XXX */
2249 #if Off_t_size > IVSIZE
2254 /* Checking for length < 0 is problematic as the type might or
2255 * might not be signed: if it is not, clever compilers will moan. */
2256 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
2259 SV * const sv = POPs;
2264 if (PL_op->op_flags & OPf_SPECIAL
2265 ? (tmpgv = gv_fetchsv(sv, 0, SVt_PVIO), 1)
2266 : !!(tmpgv = MAYBE_DEREF_GV(sv)) ) {
2273 TAINT_PROPER("truncate");
2274 if (!(fp = IoIFP(io))) {
2278 int fd = PerlIO_fileno(fp);
2280 SETERRNO(EBADF,RMS_IFI);
2284 SETERRNO(EINVAL, LIB_INVARG);
2289 if (ftruncate(fd, len) < 0)
2291 if (my_chsize(fd, len) < 0)
2299 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2300 io = MUTABLE_IO(SvRV(sv)); /* *main::FRED{IO} for example */
2301 goto do_ftruncate_io;
2304 const char * const name = SvPV_nomg_const_nolen(sv);
2305 TAINT_PROPER("truncate");
2307 if (truncate(name, len) < 0)
2314 #if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE)
2315 mode |= O_LARGEFILE; /* Transparently largefiley. */
2318 /* On open(), the Win32 CRT tries to seek around text
2319 * files using 32-bit offsets, which causes the open()
2320 * to fail on large files, so open in binary mode.
2324 tmpfd = PerlLIO_open_cloexec(name, mode);
2329 if (my_chsize(tmpfd, len) < 0)
2331 PerlLIO_close(tmpfd);
2340 SETERRNO(EBADF,RMS_IFI);
2346 /* also used for: pp_fcntl() */
2351 SV * const argsv = POPs;
2352 const unsigned int func = POPu;
2354 GV * const gv = MUTABLE_GV(POPs);
2355 IO * const io = GvIOn(gv);
2361 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
2365 if (SvPOK(argsv) || !SvNIOK(argsv)) {
2368 s = SvPV_force(argsv, len);
2369 need = IOCPARM_LEN(func);
2371 s = Sv_Grow(argsv, need + 1);
2372 SvCUR_set(argsv, need);
2375 s[SvCUR(argsv)] = 17; /* a little sanity check here */
2378 retval = SvIV(argsv);
2379 s = INT2PTR(char*,retval); /* ouch */
2382 optype = PL_op->op_type;
2383 TAINT_PROPER(PL_op_desc[optype]);
2385 if (optype == OP_IOCTL)
2387 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
2389 DIE(aTHX_ "ioctl is not implemented");
2393 DIE(aTHX_ "fcntl is not implemented");
2394 #elif defined(OS2) && defined(__EMX__)
2395 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
2397 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
2400 #if defined(HAS_IOCTL) || defined(HAS_FCNTL)
2402 if (s[SvCUR(argsv)] != 17)
2403 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
2405 s[SvCUR(argsv)] = 0; /* put our null back */
2406 SvSETMAGIC(argsv); /* Assume it has changed */
2415 PUSHp(zero_but_true, ZBTLEN);
2426 const int argtype = POPi;
2427 GV * const gv = MUTABLE_GV(POPs);
2428 IO *const io = GvIO(gv);
2429 PerlIO *const fp = io ? IoIFP(io) : NULL;
2431 /* XXX Looks to me like io is always NULL at this point */
2433 (void)PerlIO_flush(fp);
2434 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
2439 SETERRNO(EBADF,RMS_IFI);
2444 DIE(aTHX_ PL_no_func, "flock");
2455 const int protocol = POPi;
2456 const int type = POPi;
2457 const int domain = POPi;
2458 GV * const gv = MUTABLE_GV(POPs);
2459 IO * const io = GvIOn(gv);
2463 do_close(gv, FALSE);
2465 TAINT_PROPER("socket");
2466 fd = PerlSock_socket_cloexec(domain, type, protocol);
2470 IoIFP(io) = PerlIO_fdopen(fd, "r" SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2471 IoOFP(io) = PerlIO_fdopen(fd, "w" SOCKET_OPEN_MODE);
2472 IoTYPE(io) = IoTYPE_SOCKET;
2473 if (!IoIFP(io) || !IoOFP(io)) {
2474 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2475 if (IoOFP(io)) PerlIO_close(IoOFP(io));
2476 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
2486 #if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
2489 const int protocol = POPi;
2490 const int type = POPi;
2491 const int domain = POPi;
2493 GV * const gv2 = MUTABLE_GV(POPs);
2494 IO * const io2 = GvIOn(gv2);
2495 GV * const gv1 = MUTABLE_GV(POPs);
2496 IO * const io1 = GvIOn(gv1);
2499 do_close(gv1, FALSE);
2501 do_close(gv2, FALSE);
2503 TAINT_PROPER("socketpair");
2504 if (PerlSock_socketpair_cloexec(domain, type, protocol, fd) < 0)
2506 IoIFP(io1) = PerlIO_fdopen(fd[0], "r" SOCKET_OPEN_MODE);
2507 IoOFP(io1) = PerlIO_fdopen(fd[0], "w" SOCKET_OPEN_MODE);
2508 IoTYPE(io1) = IoTYPE_SOCKET;
2509 IoIFP(io2) = PerlIO_fdopen(fd[1], "r" SOCKET_OPEN_MODE);
2510 IoOFP(io2) = PerlIO_fdopen(fd[1], "w" SOCKET_OPEN_MODE);
2511 IoTYPE(io2) = IoTYPE_SOCKET;
2512 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
2513 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2514 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
2515 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
2516 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2517 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
2518 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
2524 DIE(aTHX_ PL_no_sock_func, "socketpair");
2530 /* also used for: pp_connect() */
2535 SV * const addrsv = POPs;
2536 /* OK, so on what platform does bind modify addr? */
2538 GV * const gv = MUTABLE_GV(POPs);
2539 IO * const io = GvIOn(gv);
2546 fd = PerlIO_fileno(IoIFP(io));
2550 addr = SvPV_const(addrsv, len);
2551 op_type = PL_op->op_type;
2552 TAINT_PROPER(PL_op_desc[op_type]);
2553 if ((op_type == OP_BIND
2554 ? PerlSock_bind(fd, (struct sockaddr *)addr, len)
2555 : PerlSock_connect(fd, (struct sockaddr *)addr, len))
2563 SETERRNO(EBADF,SS_IVCHAN);
2570 const int backlog = POPi;
2571 GV * const gv = MUTABLE_GV(POPs);
2572 IO * const io = GvIOn(gv);
2577 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
2584 SETERRNO(EBADF,SS_IVCHAN);
2592 char namebuf[MAXPATHLEN];
2593 #if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
2594 Sock_size_t len = sizeof (struct sockaddr_in);
2596 Sock_size_t len = sizeof namebuf;
2598 GV * const ggv = MUTABLE_GV(POPs);
2599 GV * const ngv = MUTABLE_GV(POPs);
2602 IO * const gstio = GvIO(ggv);
2603 if (!gstio || !IoIFP(gstio))
2607 fd = PerlSock_accept_cloexec(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
2610 /* Some platforms indicate zero length when an AF_UNIX client is
2611 * not bound. Simulate a non-zero-length sockaddr structure in
2613 namebuf[0] = 0; /* sun_len */
2614 namebuf[1] = AF_UNIX; /* sun_family */
2622 do_close(ngv, FALSE);
2623 IoIFP(nstio) = PerlIO_fdopen(fd, "r" SOCKET_OPEN_MODE);
2624 IoOFP(nstio) = PerlIO_fdopen(fd, "w" SOCKET_OPEN_MODE);
2625 IoTYPE(nstio) = IoTYPE_SOCKET;
2626 if (!IoIFP(nstio) || !IoOFP(nstio)) {
2627 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2628 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
2629 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
2633 #ifdef __SCO_VERSION__
2634 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
2637 PUSHp(namebuf, len);
2641 report_evil_fh(ggv);
2642 SETERRNO(EBADF,SS_IVCHAN);
2652 const int how = POPi;
2653 GV * const gv = MUTABLE_GV(POPs);
2654 IO * const io = GvIOn(gv);
2659 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
2664 SETERRNO(EBADF,SS_IVCHAN);
2669 /* also used for: pp_gsockopt() */
2674 const int optype = PL_op->op_type;
2675 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
2676 const unsigned int optname = (unsigned int) POPi;
2677 const unsigned int lvl = (unsigned int) POPi;
2678 GV * const gv = MUTABLE_GV(POPs);
2679 IO * const io = GvIOn(gv);
2686 fd = PerlIO_fileno(IoIFP(io));
2692 (void)SvPOK_only(sv);
2696 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
2699 /* XXX Configure test: does getsockopt set the length properly? */
2712 buf = SvPV_const(sv, l);
2716 aint = (int)SvIV(sv);
2717 buf = (const char *) &aint;
2720 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
2730 SETERRNO(EBADF,SS_IVCHAN);
2737 /* also used for: pp_getsockname() */
2742 const int optype = PL_op->op_type;
2743 GV * const gv = MUTABLE_GV(POPs);
2744 IO * const io = GvIOn(gv);
2752 #ifdef HAS_SOCKADDR_STORAGE
2753 len = sizeof(struct sockaddr_storage);
2757 sv = sv_2mortal(newSV(len+1));
2758 (void)SvPOK_only(sv);
2761 fd = PerlIO_fileno(IoIFP(io));
2765 case OP_GETSOCKNAME:
2766 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2769 case OP_GETPEERNAME:
2770 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2772 #if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2774 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";
2775 /* If the call succeeded, make sure we don't have a zeroed port/addr */
2776 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2777 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
2778 sizeof(u_short) + sizeof(struct in_addr))) {
2785 #ifdef BOGUS_GETNAME_RETURN
2786 /* Interactive Unix, getpeername() and getsockname()
2787 does not return valid namelen */
2788 if (len == BOGUS_GETNAME_RETURN)
2789 len = sizeof(struct sockaddr);
2798 SETERRNO(EBADF,SS_IVCHAN);
2807 /* also used for: pp_lstat() */
2818 if (PL_op->op_flags & OPf_REF ? (gv = cGVOP_gv, 1)
2819 : !!(sv=POPs, gv = MAYBE_DEREF_GV(sv))) {
2820 if (PL_op->op_type == OP_LSTAT) {
2821 if (gv != PL_defgv) {
2822 do_fstat_warning_check:
2823 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
2824 "lstat() on filehandle%s%" SVf,
2827 ? sv_2mortal(newSVhek(GvENAME_HEK(gv)))
2829 } else if (PL_laststype != OP_LSTAT)
2830 /* diag_listed_as: The stat preceding %s wasn't an lstat */
2831 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
2834 if (gv == PL_defgv) {
2835 if (PL_laststatval < 0)
2836 SETERRNO(EBADF,RMS_IFI);
2839 PL_laststype = OP_STAT;
2840 PL_statgv = gv ? gv : (GV *)io;
2841 SvPVCLEAR(PL_statname);
2847 int fd = PerlIO_fileno(IoIFP(io));
2850 PL_laststatval = -1;
2851 SETERRNO(EBADF,RMS_IFI);
2853 PL_laststatval = PerlLIO_fstat(fd, &PL_statcache);
2855 } else if (IoDIRP(io)) {
2857 PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache);
2860 PL_laststatval = -1;
2861 SETERRNO(EBADF,RMS_IFI);
2865 PL_laststatval = -1;
2866 SETERRNO(EBADF,RMS_IFI);
2870 if (PL_laststatval < 0) {
2878 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2879 io = MUTABLE_IO(SvRV(sv));
2880 if (PL_op->op_type == OP_LSTAT)
2881 goto do_fstat_warning_check;
2882 goto do_fstat_have_io;
2884 SvTAINTED_off(PL_statname); /* previous tainting irrelevant */
2885 temp = SvPV_nomg_const(sv, len);
2886 sv_setpv(PL_statname, temp);
2888 PL_laststype = PL_op->op_type;
2889 file = SvPV_nolen_const(PL_statname);
2890 if (!IS_SAFE_PATHNAME(temp, len, OP_NAME(PL_op))) {
2891 PL_laststatval = -1;
2893 else if (PL_op->op_type == OP_LSTAT)
2894 PL_laststatval = PerlLIO_lstat(file, &PL_statcache);
2896 PL_laststatval = PerlLIO_stat(file, &PL_statcache);
2897 if (PL_laststatval < 0) {
2898 if (ckWARN(WARN_NEWLINE) && should_warn_nl(file)) {
2899 /* PL_warn_nl is constant */
2900 GCC_DIAG_IGNORE_STMT(-Wformat-nonliteral);
2901 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
2902 GCC_DIAG_RESTORE_STMT;
2909 if (gimme != G_ARRAY) {
2910 if (gimme != G_VOID)
2911 XPUSHs(boolSV(max));
2917 mPUSHi(PL_statcache.st_dev);
2920 * We try to represent st_ino as a native IV or UV where
2921 * possible, but fall back to a decimal string where
2922 * necessary. The code to generate these decimal strings
2923 * is quite obtuse, because (a) we're portable to non-POSIX
2924 * platforms where st_ino might be signed; (b) we didn't
2925 * necessarily detect at Configure time whether st_ino is
2926 * signed; (c) we're portable to non-POSIX platforms where
2927 * ino_t isn't defined, so have no name for the type of
2928 * st_ino; and (d) sprintf() doesn't necessarily support
2929 * integers as large as st_ino.
2933 CLANG_DIAG_IGNORE_STMT(-Wtautological-compare);
2934 GCC_DIAG_IGNORE_STMT(-Wtype-limits);
2935 neg = PL_statcache.st_ino < 0;
2936 GCC_DIAG_RESTORE_STMT;
2937 CLANG_DIAG_RESTORE_STMT;
2939 s.st_ino = (IV)PL_statcache.st_ino;
2940 if (LIKELY(s.st_ino == PL_statcache.st_ino)) {
2943 char buf[sizeof(s.st_ino)*3+1], *p;
2944 s.st_ino = PL_statcache.st_ino;
2945 for (p = buf + sizeof(buf); p != buf+1; ) {
2947 t.st_ino = s.st_ino / 10;
2948 *--p = '0' + (int)(t.st_ino*10 - s.st_ino);
2949 s.st_ino = t.st_ino;
2954 mPUSHp(p, buf+sizeof(buf) - p);
2957 s.st_ino = (UV)PL_statcache.st_ino;
2958 if (LIKELY(s.st_ino == PL_statcache.st_ino)) {
2961 char buf[sizeof(s.st_ino)*3], *p;
2962 s.st_ino = PL_statcache.st_ino;
2963 for (p = buf + sizeof(buf); p != buf; ) {
2965 t.st_ino = s.st_ino / 10;
2966 *--p = '0' + (int)(s.st_ino - t.st_ino*10);
2967 s.st_ino = t.st_ino;
2971 mPUSHp(p, buf+sizeof(buf) - p);
2975 mPUSHu(PL_statcache.st_mode);
2976 mPUSHu(PL_statcache.st_nlink);
2978 sv_setuid(PUSHmortal, PL_statcache.st_uid);
2979 sv_setgid(PUSHmortal, PL_statcache.st_gid);
2981 #ifdef USE_STAT_RDEV
2982 mPUSHi(PL_statcache.st_rdev);
2984 PUSHs(newSVpvs_flags("", SVs_TEMP));
2986 #if Off_t_size > IVSIZE
2987 mPUSHn(PL_statcache.st_size);
2989 mPUSHi(PL_statcache.st_size);
2992 mPUSHn(PL_statcache.st_atime);
2993 mPUSHn(PL_statcache.st_mtime);
2994 mPUSHn(PL_statcache.st_ctime);
2996 mPUSHi(PL_statcache.st_atime);
2997 mPUSHi(PL_statcache.st_mtime);
2998 mPUSHi(PL_statcache.st_ctime);
3000 #ifdef USE_STAT_BLOCKS
3001 mPUSHu(PL_statcache.st_blksize);
3002 mPUSHu(PL_statcache.st_blocks);
3004 PUSHs(newSVpvs_flags("", SVs_TEMP));
3005 PUSHs(newSVpvs_flags("", SVs_TEMP));
3011 /* All filetest ops avoid manipulating the perl stack pointer in their main
3012 bodies (since commit d2c4d2d1e22d3125), and return using either
3013 S_ft_return_false() or S_ft_return_true(). These two helper functions are
3014 the only two which manipulate the perl stack. To ensure that no stack
3015 manipulation macros are used, the filetest ops avoid defining a local copy
3016 of the stack pointer with dSP. */
3018 /* If the next filetest is stacked up with this one
3019 (PL_op->op_private & OPpFT_STACKING), we leave
3020 the original argument on the stack for success,
3021 and skip the stacked operators on failure.
3022 The next few macros/functions take care of this.
3026 S_ft_return_false(pTHX_ SV *ret) {
3030 if (PL_op->op_flags & OPf_REF) XPUSHs(ret);
3034 if (PL_op->op_private & OPpFT_STACKING) {
3035 while (next && OP_IS_FILETEST(next->op_type)
3036 && next->op_private & OPpFT_STACKED)
3037 next = next->op_next;
3042 PERL_STATIC_INLINE OP *
3043 S_ft_return_true(pTHX_ SV *ret) {
3045 if (PL_op->op_flags & OPf_REF)
3046 XPUSHs(PL_op->op_private & OPpFT_STACKING ? (SV *)cGVOP_gv : (ret));
3047 else if (!(PL_op->op_private & OPpFT_STACKING))
3053 #define FT_RETURNNO return S_ft_return_false(aTHX_ &PL_sv_no)
3054 #define FT_RETURNUNDEF return S_ft_return_false(aTHX_ &PL_sv_undef)
3055 #define FT_RETURNYES return S_ft_return_true(aTHX_ &PL_sv_yes)
3057 #define tryAMAGICftest_MG(chr) STMT_START { \
3058 if ( (SvFLAGS(*PL_stack_sp) & (SVf_ROK|SVs_GMG)) \
3059 && PL_op->op_flags & OPf_KIDS) { \
3060 OP *next = S_try_amagic_ftest(aTHX_ chr); \
3061 if (next) return next; \
3066 S_try_amagic_ftest(pTHX_ char chr) {
3067 SV *const arg = *PL_stack_sp;
3070 if (!(PL_op->op_private & OPpFT_STACKING)) SvGETMAGIC(arg);
3074 const char tmpchr = chr;
3075 SV * const tmpsv = amagic_call(arg,
3076 newSVpvn_flags(&tmpchr, 1, SVs_TEMP),
3077 ftest_amg, AMGf_unary);
3082 return SvTRUE(tmpsv)
3083 ? S_ft_return_true(aTHX_ tmpsv) : S_ft_return_false(aTHX_ tmpsv);
3089 /* also used for: pp_fteexec() pp_fteread() pp_ftewrite() pp_ftrexec()
3095 /* Not const, because things tweak this below. Not bool, because there's
3096 no guarantee that OPpFT_ACCESS is <= CHAR_MAX */
3097 #if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
3098 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
3099 /* Giving some sort of initial value silences compilers. */
3101 int access_mode = R_OK;
3103 int access_mode = 0;
3106 /* access_mode is never used, but leaving use_access in makes the
3107 conditional compiling below much clearer. */
3110 Mode_t stat_mode = S_IRUSR;
3112 bool effective = FALSE;
3115 switch (PL_op->op_type) {
3116 case OP_FTRREAD: opchar = 'R'; break;
3117 case OP_FTRWRITE: opchar = 'W'; break;
3118 case OP_FTREXEC: opchar = 'X'; break;
3119 case OP_FTEREAD: opchar = 'r'; break;
3120 case OP_FTEWRITE: opchar = 'w'; break;
3121 case OP_FTEEXEC: opchar = 'x'; break;
3123 tryAMAGICftest_MG(opchar);
3125 switch (PL_op->op_type) {
3127 #if !(defined(HAS_ACCESS) && defined(R_OK))
3133 #if defined(HAS_ACCESS) && defined(W_OK)
3138 stat_mode = S_IWUSR;
3142 #if defined(HAS_ACCESS) && defined(X_OK)
3147 stat_mode = S_IXUSR;
3151 #ifdef PERL_EFF_ACCESS
3154 stat_mode = S_IWUSR;
3158 #ifndef PERL_EFF_ACCESS
3165 #ifdef PERL_EFF_ACCESS
3170 stat_mode = S_IXUSR;
3176 #if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
3178 const char *name = SvPV(*PL_stack_sp, len);
3179 if (!IS_SAFE_PATHNAME(name, len, OP_NAME(PL_op))) {
3182 else if (effective) {
3183 # ifdef PERL_EFF_ACCESS
3184 result = PERL_EFF_ACCESS(name, access_mode);
3186 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
3192 result = access(name, access_mode);
3194 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
3205 result = my_stat_flags(0);
3208 if (cando(stat_mode, effective, &PL_statcache))
3214 /* also used for: pp_ftatime() pp_ftctime() pp_ftmtime() pp_ftsize() */
3219 const int op_type = PL_op->op_type;
3223 case OP_FTIS: opchar = 'e'; break;
3224 case OP_FTSIZE: opchar = 's'; break;
3225 case OP_FTMTIME: opchar = 'M'; break;
3226 case OP_FTCTIME: opchar = 'C'; break;
3227 case OP_FTATIME: opchar = 'A'; break;
3229 tryAMAGICftest_MG(opchar);
3231 result = my_stat_flags(0);
3234 if (op_type == OP_FTIS)
3237 /* You can't dTARGET inside OP_FTIS, because you'll get
3238 "panic: pad_sv po" - the op is not flagged to have a target. */
3242 #if Off_t_size > IVSIZE
3243 sv_setnv(TARG, (NV)PL_statcache.st_size);
3245 sv_setiv(TARG, (IV)PL_statcache.st_size);
3250 ((NV)PL_basetime - PL_statcache.st_mtime) / 86400.0 );
3254 ((NV)PL_basetime - PL_statcache.st_atime) / 86400.0 );
3258 ((NV)PL_basetime - PL_statcache.st_ctime) / 86400.0 );
3262 return SvTRUE_nomg_NN(TARG)
3263 ? S_ft_return_true(aTHX_ TARG) : S_ft_return_false(aTHX_ TARG);
3268 /* also used for: pp_ftblk() pp_ftchr() pp_ftdir() pp_fteowned()
3269 * pp_ftfile() pp_ftpipe() pp_ftsgid() pp_ftsock()
3270 * pp_ftsuid() pp_ftsvtx() pp_ftzero() */
3277 switch (PL_op->op_type) {
3278 case OP_FTROWNED: opchar = 'O'; break;
3279 case OP_FTEOWNED: opchar = 'o'; break;
3280 case OP_FTZERO: opchar = 'z'; break;
3281 case OP_FTSOCK: opchar = 'S'; break;
3282 case OP_FTCHR: opchar = 'c'; break;
3283 case OP_FTBLK: opchar = 'b'; break;
3284 case OP_FTFILE: opchar = 'f'; break;
3285 case OP_FTDIR: opchar = 'd'; break;
3286 case OP_FTPIPE: opchar = 'p'; break;
3287 case OP_FTSUID: opchar = 'u'; break;
3288 case OP_FTSGID: opchar = 'g'; break;
3289 case OP_FTSVTX: opchar = 'k'; break;
3291 tryAMAGICftest_MG(opchar);
3293 result = my_stat_flags(0);
3296 switch (PL_op->op_type) {
3298 if (PL_statcache.st_uid == PerlProc_getuid())
3302 if (PL_statcache.st_uid == PerlProc_geteuid())
3306 if (PL_statcache.st_size == 0)
3310 if (S_ISSOCK(PL_statcache.st_mode))
3314 if (S_ISCHR(PL_statcache.st_mode))
3318 if (S_ISBLK(PL_statcache.st_mode))
3322 if (S_ISREG(PL_statcache.st_mode))
3326 if (S_ISDIR(PL_statcache.st_mode))
3330 if (S_ISFIFO(PL_statcache.st_mode))
3335 if (PL_statcache.st_mode & S_ISUID)
3341 if (PL_statcache.st_mode & S_ISGID)
3347 if (PL_statcache.st_mode & S_ISVTX)
3359 tryAMAGICftest_MG('l');
3360 result = my_lstat_flags(0);
3364 if (S_ISLNK(PL_statcache.st_mode))
3377 tryAMAGICftest_MG('t');
3379 if (PL_op->op_flags & OPf_REF)
3382 SV *tmpsv = *PL_stack_sp;
3383 if (!(gv = MAYBE_DEREF_GV_nomg(tmpsv))) {
3384 name = SvPV_nomg(tmpsv, namelen);
3385 gv = gv_fetchpvn_flags(name, namelen, SvUTF8(tmpsv), SVt_PVIO);
3389 if (GvIO(gv) && IoIFP(GvIOp(gv)))
3390 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
3391 else if (name && isDIGIT(*name) && grok_atoUV(name, &uv, NULL) && uv <= PERL_INT_MAX)
3396 SETERRNO(EBADF,RMS_IFI);
3399 if (PerlLIO_isatty(fd))
3405 /* also used for: pp_ftbinary() */
3418 const U8 * first_variant;
3420 tryAMAGICftest_MG(PL_op->op_type == OP_FTTEXT ? 'T' : 'B');
3422 if (PL_op->op_flags & OPf_REF)
3424 else if ((PL_op->op_private & (OPpFT_STACKED|OPpFT_AFTER_t))
3429 gv = MAYBE_DEREF_GV_nomg(sv);
3433 if (gv == PL_defgv) {
3435 io = SvTYPE(PL_statgv) == SVt_PVIO
3439 goto really_filename;
3444 SvPVCLEAR(PL_statname);
3445 io = GvIO(PL_statgv);
3447 PL_laststatval = -1;
3448 PL_laststype = OP_STAT;
3449 if (io && IoIFP(io)) {
3451 if (! PerlIO_has_base(IoIFP(io)))
3452 DIE(aTHX_ "-T and -B not implemented on filehandles");
3453 fd = PerlIO_fileno(IoIFP(io));
3455 SETERRNO(EBADF,RMS_IFI);
3458 PL_laststatval = PerlLIO_fstat(fd, &PL_statcache);
3459 if (PL_laststatval < 0)
3461 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
3462 if (PL_op->op_type == OP_FTTEXT)
3467 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
3468 i = PerlIO_getc(IoIFP(io));
3470 (void)PerlIO_ungetc(IoIFP(io),i);
3472 /* null file is anything */
3475 len = PerlIO_get_bufsiz(IoIFP(io));
3476 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
3477 /* sfio can have large buffers - limit to 512 */
3482 SETERRNO(EBADF,RMS_IFI);
3484 SETERRNO(EBADF,RMS_IFI);
3495 temp = SvPV_nomg_const(sv, temp_len);
3496 sv_setpv(PL_statname, temp);
3497 if (!IS_SAFE_PATHNAME(temp, temp_len, OP_NAME(PL_op))) {
3498 PL_laststatval = -1;
3499 PL_laststype = OP_STAT;
3503 file = SvPVX_const(PL_statname);
3505 if (!(fp = PerlIO_open(file, "r"))) {
3507 PL_laststatval = -1;
3508 PL_laststype = OP_STAT;
3510 if (ckWARN(WARN_NEWLINE) && should_warn_nl(file)) {
3511 /* PL_warn_nl is constant */
3512 GCC_DIAG_IGNORE_STMT(-Wformat-nonliteral);
3513 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
3514 GCC_DIAG_RESTORE_STMT;
3518 PL_laststype = OP_STAT;
3519 fd = PerlIO_fileno(fp);
3521 (void)PerlIO_close(fp);
3522 SETERRNO(EBADF,RMS_IFI);
3525 PL_laststatval = PerlLIO_fstat(fd, &PL_statcache);
3526 if (PL_laststatval < 0) {
3528 (void)PerlIO_close(fp);
3532 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, NULL);
3533 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3534 (void)PerlIO_close(fp);
3536 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
3537 FT_RETURNNO; /* special case NFS directories */
3538 FT_RETURNYES; /* null file is anything */
3543 /* now scan s to look for textiness */
3545 #if defined(DOSISH) || defined(USEMYBINMODE)
3546 /* ignore trailing ^Z on short files */
3547 if (len && len < (I32)sizeof(tbuf) && tbuf[len-1] == 26)
3552 if (! is_utf8_invariant_string_loc((U8 *) s, len, &first_variant)) {
3554 /* Here contains a variant under UTF-8 . See if the entire string is
3556 if (is_utf8_fixed_width_buf_flags(first_variant,
3557 len - ((char *) first_variant - (char *) s),
3560 if (PL_op->op_type == OP_FTTEXT) {
3569 /* Here, is not UTF-8 or is entirely ASCII. Look through the buffer for
3570 * things that wouldn't be in ASCII text or rich ASCII text. Count these
3572 for (i = 0; i < len; i++, s++) {
3573 if (!*s) { /* null never allowed in text */
3577 #ifdef USE_LOCALE_CTYPE
3578 if (IN_LC_RUNTIME(LC_CTYPE)) {
3579 if ( isPRINT_LC(*s) || isSPACE_LC(*s)) {
3586 /* VT occurs so rarely in text, that we consider it odd */
3587 || (isSPACE_A(*s) && *s != VT_NATIVE)
3589 /* But there is a fair amount of backspaces and escapes in
3592 || *s == ESC_NATIVE)
3599 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
3610 const char *tmps = NULL;
3614 SV * const sv = POPs;
3615 if (PL_op->op_flags & OPf_SPECIAL) {
3616 gv = gv_fetchsv(sv, 0, SVt_PVIO);
3618 if (ckWARN(WARN_UNOPENED)) {
3619 Perl_warner(aTHX_ packWARN(WARN_UNOPENED),
3620 "chdir() on unopened filehandle %" SVf, sv);
3622 SETERRNO(EBADF,RMS_IFI);
3624 TAINT_PROPER("chdir");
3628 else if (!(gv = MAYBE_DEREF_GV(sv)))
3629 tmps = SvPV_nomg_const_nolen(sv);
3632 HV * const table = GvHVn(PL_envgv);
3636 if ( (svp = hv_fetchs(table, "HOME", FALSE))
3637 || (svp = hv_fetchs(table, "LOGDIR", FALSE))
3639 || (svp = hv_fetchs(table, "SYS$LOGIN", FALSE))
3643 tmps = SvPV_nolen_const(*svp);
3647 SETERRNO(EINVAL, LIB_INVARG);
3648 TAINT_PROPER("chdir");
3653 TAINT_PROPER("chdir");
3656 IO* const io = GvIO(gv);
3659 PUSHi(fchdir(my_dirfd(IoDIRP(io))) >= 0);
3660 } else if (IoIFP(io)) {
3661 int fd = PerlIO_fileno(IoIFP(io));
3665 PUSHi(fchdir(fd) >= 0);
3675 DIE(aTHX_ PL_no_func, "fchdir");
3679 PUSHi( PerlDir_chdir(tmps) >= 0 );
3681 /* Clear the DEFAULT element of ENV so we'll get the new value
3683 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
3690 SETERRNO(EBADF,RMS_IFI);
3697 /* also used for: pp_chmod() pp_kill() pp_unlink() pp_utime() */
3701 dSP; dMARK; dTARGET;
3702 const I32 value = (I32)apply(PL_op->op_type, MARK, SP);
3713 char * const tmps = POPpx;
3714 TAINT_PROPER("chroot");
3715 PUSHi( chroot(tmps) >= 0 );
3718 DIE(aTHX_ PL_no_func, "chroot");
3729 const char * const tmps2 = POPpconstx;
3730 const char * const tmps = SvPV_nolen_const(TOPs);
3731 TAINT_PROPER("rename");
3733 anum = PerlLIO_rename(tmps, tmps2);
3735 if (!(anum = PerlLIO_stat(tmps, &statbuf))) {
3736 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3739 if (PerlProc_geteuid() || PerlLIO_stat(tmps2, &statbuf) < 0 || !S_ISDIR(statbuf.st_mode))
3740 (void)UNLINK(tmps2);
3741 if (!(anum = link(tmps, tmps2)))
3742 anum = UNLINK(tmps);
3751 /* also used for: pp_symlink() */
3753 #if defined(HAS_LINK) || defined(HAS_SYMLINK)
3757 const int op_type = PL_op->op_type;
3761 if (op_type == OP_LINK)
3762 DIE(aTHX_ PL_no_func, "link");
3764 # ifndef HAS_SYMLINK
3765 if (op_type == OP_SYMLINK)
3766 DIE(aTHX_ PL_no_func, "symlink");
3770 const char * const tmps2 = POPpconstx;
3771 const char * const tmps = SvPV_nolen_const(TOPs);
3772 TAINT_PROPER(PL_op_desc[op_type]);
3774 # if defined(HAS_LINK) && defined(HAS_SYMLINK)
3775 /* Both present - need to choose which. */
3776 (op_type == OP_LINK) ?
3777 PerlLIO_link(tmps, tmps2) : symlink(tmps, tmps2);
3778 # elif defined(HAS_LINK)
3779 /* Only have link, so calls to pp_symlink will have DIE()d above. */
3780 PerlLIO_link(tmps, tmps2);
3781 # elif defined(HAS_SYMLINK)
3782 /* Only have symlink, so calls to pp_link will have DIE()d above. */
3783 symlink(tmps, tmps2);
3787 SETi( result >= 0 );
3792 /* also used for: pp_symlink() */
3797 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
3807 char buf[MAXPATHLEN];
3812 /* NOTE: if the length returned by readlink() is sizeof(buf) - 1,
3813 * it is impossible to know whether the result was truncated. */
3814 len = readlink(tmps, buf, sizeof(buf) - 1);
3822 RETSETUNDEF; /* just pretend it's a normal file */
3826 #if !defined(HAS_MKDIR) || !defined(HAS_RMDIR)
3828 S_dooneliner(pTHX_ const char *cmd, const char *filename)
3830 char * const save_filename = filename;
3835 Size_t size = strlen(cmd) + (strlen(filename) * 2) + 10;
3837 PERL_ARGS_ASSERT_DOONELINER;
3839 Newx(cmdline, size, char);
3840 my_strlcpy(cmdline, cmd, size);
3841 my_strlcat(cmdline, " ", size);
3842 for (s = cmdline + strlen(cmdline); *filename; ) {
3846 if (s - cmdline < size)
3847 my_strlcpy(s, " 2>&1", size - (s - cmdline));
3848 myfp = PerlProc_popen(cmdline, "r");
3852 SV * const tmpsv = sv_newmortal();
3853 /* Need to save/restore 'PL_rs' ?? */
3854 s = sv_gets(tmpsv, myfp, 0);
3855 (void)PerlProc_pclose(myfp);
3859 #ifdef HAS_SYS_ERRLIST
3864 /* you don't see this */
3865 const char * const errmsg = Strerror(e) ;
3868 if (instr(s, errmsg)) {
3875 #define EACCES EPERM
3877 if (instr(s, "cannot make"))
3878 SETERRNO(EEXIST,RMS_FEX);
3879 else if (instr(s, "existing file"))
3880 SETERRNO(EEXIST,RMS_FEX);
3881 else if (instr(s, "ile exists"))
3882 SETERRNO(EEXIST,RMS_FEX);
3883 else if (instr(s, "non-exist"))
3884 SETERRNO(ENOENT,RMS_FNF);
3885 else if (instr(s, "does not exist"))
3886 SETERRNO(ENOENT,RMS_FNF);
3887 else if (instr(s, "not empty"))
3888 SETERRNO(EBUSY,SS_DEVOFFLINE);
3889 else if (instr(s, "cannot access"))
3890 SETERRNO(EACCES,RMS_PRV);
3892 SETERRNO(EPERM,RMS_PRV);
3895 else { /* some mkdirs return no failure indication */
3897 anum = (PerlLIO_stat(save_filename, &statbuf) >= 0);
3898 if (PL_op->op_type == OP_RMDIR)
3903 SETERRNO(EACCES,RMS_PRV); /* a guess */
3912 /* This macro removes trailing slashes from a directory name.
3913 * Different operating and file systems take differently to
3914 * trailing slashes. According to POSIX 1003.1 1996 Edition
3915 * any number of trailing slashes should be allowed.
3916 * Thusly we snip them away so that even non-conforming
3917 * systems are happy.
3918 * We should probably do this "filtering" for all
3919 * the functions that expect (potentially) directory names:
3920 * -d, chdir(), chmod(), chown(), chroot(), fcntl()?,
3921 * (mkdir()), opendir(), rename(), rmdir(), stat(). --jhi */
3923 #define TRIMSLASHES(tmps,len,copy) (tmps) = SvPV_const(TOPs, (len)); \
3924 if ((len) > 1 && (tmps)[(len)-1] == '/') { \
3927 } while ((len) > 1 && (tmps)[(len)-1] == '/'); \
3928 (tmps) = savepvn((tmps), (len)); \
3938 const unsigned int mode = (MAXARG > 1 && (TOPs||((void)POPs,0))) ? POPu : 0777;
3940 TRIMSLASHES(tmps,len,copy);
3942 TAINT_PROPER("mkdir");
3944 SETi( PerlDir_mkdir(tmps, mode) >= 0 );
3948 SETi( dooneliner("mkdir", tmps) );
3949 oldumask = PerlLIO_umask(0);
3950 PerlLIO_umask(oldumask);
3951 PerlLIO_chmod(tmps, (mode & ~oldumask) & 0777);
3966 TRIMSLASHES(tmps,len,copy);
3967 TAINT_PROPER("rmdir");
3969 SETi( PerlDir_rmdir(tmps) >= 0 );
3971 SETi( dooneliner("rmdir", tmps) );
3978 /* Directory calls. */
3982 #if defined(Direntry_t) && defined(HAS_READDIR)
3984 const char * const dirname = POPpconstx;
3985 GV * const gv = MUTABLE_GV(POPs);
3986 IO * const io = GvIOn(gv);
3988 if ((IoIFP(io) || IoOFP(io)))
3989 Perl_croak(aTHX_ "Cannot open %" HEKf " as a dirhandle: it is already open as a filehandle",
3990 HEKfARG(GvENAME_HEK(gv)));
3992 PerlDir_close(IoDIRP(io));
3993 if (!(IoDIRP(io) = PerlDir_open(dirname)))
3999 SETERRNO(EBADF,RMS_DIR);
4002 DIE(aTHX_ PL_no_dir_func, "opendir");
4008 #if !defined(Direntry_t) || !defined(HAS_READDIR)
4009 DIE(aTHX_ PL_no_dir_func, "readdir");
4011 #if !defined(I_DIRENT) && !defined(VMS)
4012 Direntry_t *readdir (DIR *);
4017 const U8 gimme = GIMME_V;
4018 GV * const gv = MUTABLE_GV(POPs);
4019 const Direntry_t *dp;
4020 IO * const io = GvIOn(gv);
4023 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
4024 "readdir() attempted on invalid dirhandle %" HEKf,
4025 HEKfARG(GvENAME_HEK(gv)));
4030 dp = (Direntry_t *)PerlDir_read(IoDIRP(io));
4034 sv = newSVpvn(dp->d_name, dp->d_namlen);
4036 sv = newSVpv(dp->d_name, 0);
4038 if (!(IoFLAGS(io) & IOf_UNTAINT))
4041 } while (gimme == G_ARRAY);
4043 if (!dp && gimme != G_ARRAY)
4050 SETERRNO(EBADF,RMS_ISI);
4051 if (gimme == G_ARRAY)
4060 #if defined(HAS_TELLDIR) || defined(telldir)
4062 /* XXX does _anyone_ need this? --AD 2/20/1998 */
4063 /* XXX netbsd still seemed to.
4064 XXX HAS_TELLDIR_PROTO is new style, NEED_TELLDIR_PROTO is old style.
4065 --JHI 1999-Feb-02 */
4066 # if !defined(HAS_TELLDIR_PROTO) || defined(NEED_TELLDIR_PROTO)
4067 long telldir (DIR *);
4069 GV * const gv = MUTABLE_GV(POPs);
4070 IO * const io = GvIOn(gv);
4073 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
4074 "telldir() attempted on invalid dirhandle %" HEKf,
4075 HEKfARG(GvENAME_HEK(gv)));
4079 PUSHi( PerlDir_tell(IoDIRP(io)) );
4083 SETERRNO(EBADF,RMS_ISI);
4086 DIE(aTHX_ PL_no_dir_func, "telldir");
4092 #if defined(HAS_SEEKDIR) || defined(seekdir)
4094 const long along = POPl;
4095 GV * const gv = MUTABLE_GV(POPs);
4096 IO * const io = GvIOn(gv);
4099 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
4100 "seekdir() attempted on invalid dirhandle %" HEKf,
4101 HEKfARG(GvENAME_HEK(gv)));
4104 (void)PerlDir_seek(IoDIRP(io), along);
4109 SETERRNO(EBADF,RMS_ISI);
4112 DIE(aTHX_ PL_no_dir_func, "seekdir");
4118 #if defined(HAS_REWINDDIR) || defined(rewinddir)
4120 GV * const gv = MUTABLE_GV(POPs);
4121 IO * const io = GvIOn(gv);
4124 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
4125 "rewinddir() attempted on invalid dirhandle %" HEKf,
4126 HEKfARG(GvENAME_HEK(gv)));
4129 (void)PerlDir_rewind(IoDIRP(io));
4133 SETERRNO(EBADF,RMS_ISI);
4136 DIE(aTHX_ PL_no_dir_func, "rewinddir");
4142 #if defined(Direntry_t) && defined(HAS_READDIR)
4144 GV * const gv = MUTABLE_GV(POPs);
4145 IO * const io = GvIOn(gv);
4148 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
4149 "closedir() attempted on invalid dirhandle %" HEKf,
4150 HEKfARG(GvENAME_HEK(gv)));
4153 #ifdef VOID_CLOSEDIR
4154 PerlDir_close(IoDIRP(io));
4156 if (PerlDir_close(IoDIRP(io)) < 0) {
4157 IoDIRP(io) = 0; /* Don't try to close again--coredumps on SysV */
4166 SETERRNO(EBADF,RMS_IFI);
4169 DIE(aTHX_ PL_no_dir_func, "closedir");
4173 /* Process control. */
4180 #ifdef HAS_SIGPROCMASK
4181 sigset_t oldmask, newmask;
4185 PERL_FLUSHALL_FOR_CHILD;
4186 #ifdef HAS_SIGPROCMASK
4187 sigfillset(&newmask);
4188 sigprocmask(SIG_SETMASK, &newmask, &oldmask);
4190 childpid = PerlProc_fork();
4191 if (childpid == 0) {
4195 for (sig = 1; sig < SIG_SIZE; sig++)
4196 PL_psig_pend[sig] = 0;
4198 #ifdef HAS_SIGPROCMASK
4201 sigprocmask(SIG_SETMASK, &oldmask, NULL);
4208 #ifdef PERL_USES_PL_PIDSTATUS
4209 hv_clear(PL_pidstatus); /* no kids, so don't wait for 'em */
4214 #elif (defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)) || defined(__amigaos4__)
4219 PERL_FLUSHALL_FOR_CHILD;
4220 childpid = PerlProc_fork();
4226 DIE(aTHX_ PL_no_func, "fork");
4232 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(__LIBCATAMOUNT__)
4237 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
4238 childpid = wait4pid(-1, &argflags, 0);
4240 while ((childpid = wait4pid(-1, &argflags, 0)) == -1 &&
4245 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4246 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
4247 STATUS_NATIVE_CHILD_SET((childpid && childpid != -1) ? argflags : -1);
4249 STATUS_NATIVE_CHILD_SET((childpid > 0) ? argflags : -1);
4254 DIE(aTHX_ PL_no_func, "wait");
4260 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(__LIBCATAMOUNT__)
4262 const int optype = POPi;
4263 const Pid_t pid = TOPi;
4267 result = amigaos_waitpid(aTHX_ optype, pid, &argflags);
4268 STATUS_NATIVE_CHILD_SET((result >= 0) ? argflags : -1);
4269 result = result == 0 ? pid : -1;
4273 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
4274 result = wait4pid(pid, &argflags, optype);
4276 while ((result = wait4pid(pid, &argflags, optype)) == -1 &&
4281 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4282 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
4283 STATUS_NATIVE_CHILD_SET((result && result != -1) ? argflags : -1);
4285 STATUS_NATIVE_CHILD_SET((result > 0) ? argflags : -1);
4287 # endif /* __amigaos4__ */
4291 DIE(aTHX_ PL_no_func, "waitpid");
4297 dSP; dMARK; dORIGMARK; dTARGET;
4298 #if defined(__LIBCATAMOUNT__)
4299 PL_statusvalue = -1;
4304 # ifdef __amigaos4__
4310 while (++MARK <= SP) {
4311 SV *origsv = *MARK, *copysv;
4315 #if defined(WIN32) || defined(__VMS)
4317 * Because of a nasty platform-specific variation on the meaning
4318 * of arguments to this op, we must preserve numeric arguments
4319 * as numeric, not just retain the string value.
4321 if (SvNIOK(origsv) || SvNIOKp(origsv)) {
4322 copysv = newSV_type(SVt_PVNV);
4324 if (SvPOK(origsv) || SvPOKp(origsv)) {
4325 pv = SvPV_nomg(origsv, len);
4326 sv_setpvn(copysv, pv, len);
4329 if (SvIOK(origsv) || SvIOKp(origsv))
4330 SvIV_set(copysv, SvIVX(origsv));
4331 if (SvNOK(origsv) || SvNOKp(origsv))
4332 SvNV_set(copysv, SvNVX(origsv));
4333 SvFLAGS(copysv) |= SvFLAGS(origsv) &
4334 (SVf_IOK|SVf_NOK|SVf_POK|SVp_IOK|SVp_NOK|SVp_POK|
4335 SVf_UTF8|SVf_IVisUV);
4339 pv = SvPV_nomg(origsv, len);
4340 copysv = newSVpvn_flags(pv, len,
4341 (SvFLAGS(origsv) & SVf_UTF8) | SVs_TEMP);
4349 TAINT_PROPER("system");
4351 PERL_FLUSHALL_FOR_CHILD;
4352 #if (defined(HAS_FORK) || defined(__amigaos4__)) && !defined(VMS) && !defined(OS2) || defined(PERL_MICRO)
4355 struct UserData userdata;
4362 bool child_success = FALSE;
4363 #ifdef HAS_SIGPROCMASK
4364 sigset_t newset, oldset;
4367 if (PerlProc_pipe_cloexec(pp) >= 0)
4370 amigaos_fork_set_userdata(aTHX_
4376 pthread_create(&proc,NULL,amigaos_system_child,(void *)&userdata);
4377 child_success = proc > 0;
4379 #ifdef HAS_SIGPROCMASK
4380 sigemptyset(&newset);
4381 sigaddset(&newset, SIGCHLD);
4382 sigprocmask(SIG_BLOCK, &newset, &oldset);
4384 while ((childpid = PerlProc_fork()) == -1) {
4385 if (errno != EAGAIN) {
4390 PerlLIO_close(pp[0]);
4391 PerlLIO_close(pp[1]);
4393 #ifdef HAS_SIGPROCMASK
4394 sigprocmask(SIG_SETMASK, &oldset, NULL);
4400 child_success = childpid > 0;
4402 if (child_success) {
4403 Sigsave_t ihand,qhand; /* place to save signals during system() */
4406 #ifndef __amigaos4__
4408 PerlLIO_close(pp[1]);
4411 rsignal_save(SIGINT, (Sighandler_t) SIG_IGN, &ihand);
4412 rsignal_save(SIGQUIT, (Sighandler_t) SIG_IGN, &qhand);
4415 result = pthread_join(proc, (void **)&status);
4418 result = wait4pid(childpid, &status, 0);
4419 } while (result == -1 && errno == EINTR);
4422 #ifdef HAS_SIGPROCMASK
4423 sigprocmask(SIG_SETMASK, &oldset, NULL);
4425 (void)rsignal_restore(SIGINT, &ihand);
4426 (void)rsignal_restore(SIGQUIT, &qhand);
4428 STATUS_NATIVE_CHILD_SET(result == -1 ? -1 : status);
4434 while (n < sizeof(int)) {
4435 const SSize_t n1 = PerlLIO_read(pp[0],
4436 (void*)(((char*)&errkid)+n),
4442 PerlLIO_close(pp[0]);
4443 if (n) { /* Error */
4444 if (n != sizeof(int))
4445 DIE(aTHX_ "panic: kid popen errno read, n=%u", n);
4446 errno = errkid; /* Propagate errno from kid */
4448 /* The pipe always has something in it
4449 * so n alone is not enough. */
4453 STATUS_NATIVE_CHILD_SET(-1);
4457 XPUSHi(STATUS_CURRENT);
4460 #ifndef __amigaos4__
4461 #ifdef HAS_SIGPROCMASK
4462 sigprocmask(SIG_SETMASK, &oldset, NULL);
4465 PerlLIO_close(pp[0]);
4466 if (PL_op->op_flags & OPf_STACKED) {
4467 SV * const really = *++MARK;
4468 value = (I32)do_aexec5(really, MARK, SP, pp[1], did_pipes);
4470 else if (SP - MARK != 1)
4471 value = (I32)do_aexec5(NULL, MARK, SP, pp[1], did_pipes);
4473 value = (I32)do_exec3(SvPVx_nolen(sv_mortalcopy(*SP)), pp[1], did_pipes);
4475 #endif /* __amigaos4__ */
4478 #else /* ! FORK or VMS or OS/2 */
4481 if (PL_op->op_flags & OPf_STACKED) {
4482 SV * const really = *++MARK;
4483 # if defined(WIN32) || defined(OS2) || defined(__VMS)
4484 value = (I32)do_aspawn(really, MARK, SP);
4486 value = (I32)do_aspawn(really, (void **)MARK, (void **)SP);
4489 else if (SP - MARK != 1) {
4490 # if defined(WIN32) || defined(OS2) || defined(__VMS)
4491 value = (I32)do_aspawn(NULL, MARK, SP);
4493 value = (I32)do_aspawn(NULL, (void **)MARK, (void **)SP);
4497 value = (I32)do_spawn(SvPVx_nolen(sv_mortalcopy(*SP)));
4499 if (PL_statusvalue == -1) /* hint that value must be returned as is */
4501 STATUS_NATIVE_CHILD_SET(value);
4503 XPUSHi(result ? value : STATUS_CURRENT);
4504 #endif /* !FORK or VMS or OS/2 */
4511 dSP; dMARK; dORIGMARK; dTARGET;
4516 while (++MARK <= SP) {
4517 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
4522 TAINT_PROPER("exec");
4525 PERL_FLUSHALL_FOR_CHILD;
4526 if (PL_op->op_flags & OPf_STACKED) {
4527 SV * const really = *++MARK;
4528 value = (I32)do_aexec(really, MARK, SP);
4530 else if (SP - MARK != 1)
4532 value = (I32)vms_do_aexec(NULL, MARK, SP);
4534 value = (I32)do_aexec(NULL, MARK, SP);
4538 value = (I32)vms_do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
4540 value = (I32)do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
4552 XPUSHi( getppid() );
4555 DIE(aTHX_ PL_no_func, "getppid");
4565 (MAXARG < 1) ? 0 : TOPs ? SvIVx(POPs) : ((void)POPs, 0);
4568 pgrp = (I32)BSD_GETPGRP(pid);
4570 if (pid != 0 && pid != PerlProc_getpid())
4571 DIE(aTHX_ "POSIX getpgrp can't take an argument");
4577 DIE(aTHX_ PL_no_func, "getpgrp");
4587 pgrp = MAXARG == 2 && (TOPs||POPs) ? POPi : 0;
4588 if (MAXARG > 0) pid = TOPs ? TOPi : 0;
4595 TAINT_PROPER("setpgrp");
4597 SETi( BSD_SETPGRP(pid, pgrp) >= 0 );
4599 if ((pgrp != 0 && pgrp != PerlProc_getpid())
4600 || (pid != 0 && pid != PerlProc_getpid()))
4602 DIE(aTHX_ "setpgrp can't take arguments");
4604 SETi( setpgrp() >= 0 );
4605 #endif /* USE_BSDPGRP */
4608 DIE(aTHX_ PL_no_func, "setpgrp");
4613 * The glibc headers typedef __priority_which_t to an enum under C, but
4614 * under C++, it keeps it as int. -Wc++-compat doesn't know this, so we
4615 * need to explicitly cast it to shut up the warning.
4617 #if defined(__GLIBC__) && ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3) || (__GLIBC__ > 2))
4618 # define PRIORITY_WHICH_T(which) (__priority_which_t)which
4620 # define PRIORITY_WHICH_T(which) which
4625 #ifdef HAS_GETPRIORITY
4627 const int who = POPi;
4628 const int which = TOPi;
4629 SETi( getpriority(PRIORITY_WHICH_T(which), who) );
4632 DIE(aTHX_ PL_no_func, "getpriority");
4638 #ifdef HAS_SETPRIORITY
4640 const int niceval = POPi;
4641 const int who = POPi;
4642 const int which = TOPi;
4643 TAINT_PROPER("setpriority");
4644 SETi( setpriority(PRIORITY_WHICH_T(which), who, niceval) >= 0 );
4647 DIE(aTHX_ PL_no_func, "setpriority");
4651 #undef PRIORITY_WHICH_T
4659 XPUSHn( (NV)time(NULL) );
4661 XPUSHu( (UV)time(NULL) );
4670 struct tms timesbuf;
4673 (void)PerlProc_times(×buf);
4675 mPUSHn(((NV)timesbuf.tms_utime)/(NV)PL_clocktick);
4676 if (GIMME_V == G_ARRAY) {
4677 mPUSHn(((NV)timesbuf.tms_stime)/(NV)PL_clocktick);
4678 mPUSHn(((NV)timesbuf.tms_cutime)/(NV)PL_clocktick);
4679 mPUSHn(((NV)timesbuf.tms_cstime)/(NV)PL_clocktick);
4682 #elif defined(PERL_MICRO)
4686 if (GIMME_V == G_ARRAY) {
4693 DIE(aTHX_ "times not implemented");
4694 #endif /* HAS_TIMES */
4697 /* The 32 bit int year limits the times we can represent to these
4698 boundaries with a few days wiggle room to account for time zone
4701 /* Sat Jan 3 00:00:00 -2147481748 */
4702 #define TIME_LOWER_BOUND -67768100567755200.0
4703 /* Sun Dec 29 12:00:00 2147483647 */
4704 #define TIME_UPPER_BOUND 67767976233316800.0
4707 /* also used for: pp_localtime() */
4715 const char *opname = PL_op->op_type == OP_LOCALTIME ? "localtime" : "gmtime";
4716 static const char * const dayname[] =
4717 {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
4718 static const char * const monname[] =
4719 {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
4720 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
4722 if (MAXARG < 1 || (!TOPs && ((void)POPs, 1))) {
4725 when = (Time64_T)now;
4728 NV input = Perl_floor(POPn);
4729 const bool pl_isnan = Perl_isnan(input);
4730 when = (Time64_T)input;
4731 if (UNLIKELY(pl_isnan || when != input)) {
4732 /* diag_listed_as: gmtime(%f) too large */
4733 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4734 "%s(%.0" NVff ") too large", opname, input);
4742 if ( TIME_LOWER_BOUND > when ) {
4743 /* diag_listed_as: gmtime(%f) too small */
4744 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4745 "%s(%.0" NVff ") too small", opname, when);
4748 else if( when > TIME_UPPER_BOUND ) {
4749 /* diag_listed_as: gmtime(%f) too small */
4750 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4751 "%s(%.0" NVff ") too large", opname, when);
4755 if (PL_op->op_type == OP_LOCALTIME)
4756 err = Perl_localtime64_r(&when, &tmbuf);
4758 err = Perl_gmtime64_r(&when, &tmbuf);
4762 /* diag_listed_as: gmtime(%f) failed */
4763 /* XXX %lld broken for quads */
4765 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4766 "%s(%.0" NVff ") failed", opname, when);
4769 if (GIMME_V != G_ARRAY) { /* scalar context */
4776 Perl_sv_setpvf_mg(aTHX_ TARG, "%s %s %2d %02d:%02d:%02d %" IVdf,
4777 dayname[tmbuf.tm_wday],
4778 monname[tmbuf.tm_mon],
4783 (IV)tmbuf.tm_year + 1900);
4786 else { /* list context */
4792 mPUSHi(tmbuf.tm_sec);
4793 mPUSHi(tmbuf.tm_min);
4794 mPUSHi(tmbuf.tm_hour);
4795 mPUSHi(tmbuf.tm_mday);
4796 mPUSHi(tmbuf.tm_mon);
4797 mPUSHn(tmbuf.tm_year);
4798 mPUSHi(tmbuf.tm_wday);
4799 mPUSHi(tmbuf.tm_yday);
4800 mPUSHi(tmbuf.tm_isdst);
4809 /* alarm() takes an unsigned int number of seconds, and return the
4810 * unsigned int number of seconds remaining in the previous alarm
4811 * (alarms don't stack). Therefore negative return values are not
4815 /* Note that while the C library function alarm() as such has
4816 * no errors defined (or in other words, properly behaving client
4817 * code shouldn't expect any), alarm() being obsoleted by
4818 * setitimer() and often being implemented in terms of
4819 * setitimer(), can fail. */
4820 /* diag_listed_as: %s() with negative argument */
4821 Perl_ck_warner_d(aTHX_ packWARN(WARN_MISC),
4822 "alarm() with negative argument");
4823 SETERRNO(EINVAL, LIB_INVARG);
4827 unsigned int retval = alarm(anum);
4828 if ((int)retval < 0) /* Strictly speaking "cannot happen". */
4834 DIE(aTHX_ PL_no_func, "alarm");
4844 (void)time(&lasttime);
4845 if (MAXARG < 1 || (!TOPs && !POPs))
4848 const I32 duration = POPi;
4850 /* diag_listed_as: %s() with negative argument */
4851 Perl_ck_warner_d(aTHX_ packWARN(WARN_MISC),
4852 "sleep() with negative argument");
4853 SETERRNO(EINVAL, LIB_INVARG);
4854 XPUSHs(&PL_sv_zero);
4857 PerlProc_sleep((unsigned int)duration);
4861 XPUSHu((UV)(when - lasttime));
4865 /* Shared memory. */
4866 /* Merged with some message passing. */
4868 /* also used for: pp_msgrcv() pp_msgsnd() pp_semop() pp_shmread() */
4872 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4873 dSP; dMARK; dTARGET;
4874 const int op_type = PL_op->op_type;
4879 value = (I32)(do_msgsnd(MARK, SP) >= 0);
4882 value = (I32)(do_msgrcv(MARK, SP) >= 0);
4885 value = (I32)(do_semop(MARK, SP) >= 0);
4888 value = (I32)(do_shmio(op_type, MARK, SP) >= 0);
4896 return Perl_pp_semget(aTHX);
4902 /* also used for: pp_msgget() pp_shmget() */
4906 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4907 dSP; dMARK; dTARGET;
4908 const int anum = do_ipcget(PL_op->op_type, MARK, SP);
4915 DIE(aTHX_ "System V IPC is not implemented on this machine");
4919 /* also used for: pp_msgctl() pp_shmctl() */
4923 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4924 dSP; dMARK; dTARGET;
4925 const int anum = do_ipcctl(PL_op->op_type, MARK, SP);
4933 PUSHp(zero_but_true, ZBTLEN);
4937 return Perl_pp_semget(aTHX);
4941 /* I can't const this further without getting warnings about the types of
4942 various arrays passed in from structures. */
4944 S_space_join_names_mortal(pTHX_ char *const *array)
4948 if (array && *array) {
4949 target = newSVpvs_flags("", SVs_TEMP);
4951 sv_catpv(target, *array);
4954 sv_catpvs(target, " ");
4957 target = sv_mortalcopy(&PL_sv_no);
4962 /* Get system info. */
4964 /* also used for: pp_ghbyaddr() pp_ghbyname() */
4968 #if defined(HAS_GETHOSTBYNAME) || defined(HAS_GETHOSTBYADDR) || defined(HAS_GETHOSTENT)
4970 I32 which = PL_op->op_type;
4973 #ifndef HAS_GETHOST_PROTOS /* XXX Do we need individual probes? */
4974 struct hostent *gethostbyaddr(Netdb_host_t, Netdb_hlen_t, int);
4975 struct hostent *gethostbyname(Netdb_name_t);
4976 struct hostent *gethostent(void);
4978 struct hostent *hent = NULL;
4982 if (which == OP_GHBYNAME) {
4983 #ifdef HAS_GETHOSTBYNAME
4984 const char* const name = POPpbytex;
4985 hent = PerlSock_gethostbyname(name);
4987 DIE(aTHX_ PL_no_sock_func, "gethostbyname");
4990 else if (which == OP_GHBYADDR) {
4991 #ifdef HAS_GETHOSTBYADDR
4992 const int addrtype = POPi;
4993 SV * const addrsv = POPs;
4995 const char *addr = (char *)SvPVbyte(addrsv, addrlen);
4997 hent = PerlSock_gethostbyaddr(addr, (Netdb_hlen_t) addrlen, addrtype);
4999 DIE(aTHX_ PL_no_sock_func, "gethostbyaddr");
5003 #ifdef HAS_GETHOSTENT
5004 hent = PerlSock_gethostent();
5006 DIE(aTHX_ PL_no_sock_func, "gethostent");
5009 #ifdef HOST_NOT_FOUND
5011 #ifdef USE_REENTRANT_API
5012 # ifdef USE_GETHOSTENT_ERRNO
5013 h_errno = PL_reentrant_buffer->_gethostent_errno;
5016 STATUS_UNIX_SET(h_errno);
5020 if (GIMME_V != G_ARRAY) {
5021 PUSHs(sv = sv_newmortal());
5023 if (which == OP_GHBYNAME) {
5025 sv_setpvn(sv, hent->h_addr, hent->h_length);
5028 sv_setpv(sv, (char*)hent->h_name);
5034 mPUSHs(newSVpv((char*)hent->h_name, 0));
5035 PUSHs(space_join_names_mortal(hent->h_aliases));
5036 mPUSHi(hent->h_addrtype);
5037 len = hent->h_length;
5040 for (elem = hent->h_addr_list; elem && *elem; elem++) {
5041 mXPUSHp(*elem, len);
5045 mPUSHp(hent->h_addr, len);
5047 PUSHs(sv_mortalcopy(&PL_sv_no));
5052 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5056 /* also used for: pp_gnbyaddr() pp_gnbyname() */
5060 #if defined(HAS_GETNETBYNAME) || defined(HAS_GETNETBYADDR) || defined(HAS_GETNETENT)
5062 I32 which = PL_op->op_type;
5064 #ifndef HAS_GETNET_PROTOS /* XXX Do we need individual probes? */
5065 struct netent *getnetbyaddr(Netdb_net_t, int);
5066 struct netent *getnetbyname(Netdb_name_t);
5067 struct netent *getnetent(void);
5069 struct netent *nent;
5071 if (which == OP_GNBYNAME){
5072 #ifdef HAS_GETNETBYNAME
5073 const char * const name = POPpbytex;
5074 nent = PerlSock_getnetbyname(name);
5076 DIE(aTHX_ PL_no_sock_func, "getnetbyname");
5079 else if (which == OP_GNBYADDR) {
5080 #ifdef HAS_GETNETBYADDR
5081 const int addrtype = POPi;
5082 const Netdb_net_t addr = (Netdb_net_t) (U32)POPu;
5083 nent = PerlSock_getnetbyaddr(addr, addrtype);
5085 DIE(aTHX_ PL_no_sock_func, "getnetbyaddr");
5089 #ifdef HAS_GETNETENT
5090 nent = PerlSock_getnetent();
5092 DIE(aTHX_ PL_no_sock_func, "getnetent");
5095 #ifdef HOST_NOT_FOUND
5097 #ifdef USE_REENTRANT_API
5098 # ifdef USE_GETNETENT_ERRNO
5099 h_errno = PL_reentrant_buffer->_getnetent_errno;
5102 STATUS_UNIX_SET(h_errno);
5107 if (GIMME_V != G_ARRAY) {
5108 PUSHs(sv = sv_newmortal());
5110 if (which == OP_GNBYNAME)
5111 sv_setiv(sv, (IV)nent->n_net);
5113 sv_setpv(sv, nent->n_name);
5119 mPUSHs(newSVpv(nent->n_name, 0));
5120 PUSHs(space_join_names_mortal(nent->n_aliases));
5121 mPUSHi(nent->n_addrtype);
5122 mPUSHi(nent->n_net);
5127 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5132 /* also used for: pp_gpbyname() pp_gpbynumber() */
5136 #if defined(HAS_GETPROTOBYNAME) || defined(HAS_GETPROTOBYNUMBER) || defined(HAS_GETPROTOENT)
5138 I32 which = PL_op->op_type;
5140 #ifndef HAS_GETPROTO_PROTOS /* XXX Do we need individual probes? */
5141 struct protoent *getprotobyname(Netdb_name_t);
5142 struct protoent *getprotobynumber(int);
5143 struct protoent *getprotoent(void);
5145 struct protoent *pent;
5147 if (which == OP_GPBYNAME) {
5148 #ifdef HAS_GETPROTOBYNAME
5149 const char* const name = POPpbytex;
5150 pent = PerlSock_getprotobyname(name);
5152 DIE(aTHX_ PL_no_sock_func, "getprotobyname");
5155 else if (which == OP_GPBYNUMBER) {
5156 #ifdef HAS_GETPROTOBYNUMBER
5157 const int number = POPi;
5158 pent = PerlSock_getprotobynumber(number);
5160 DIE(aTHX_ PL_no_sock_func, "getprotobynumber");
5164 #ifdef HAS_GETPROTOENT
5165 pent = PerlSock_getprotoent();
5167 DIE(aTHX_ PL_no_sock_func, "getprotoent");
5171 if (GIMME_V != G_ARRAY) {
5172 PUSHs(sv = sv_newmortal());
5174 if (which == OP_GPBYNAME)
5175 sv_setiv(sv, (IV)pent->p_proto);
5177 sv_setpv(sv, pent->p_name);
5183 mPUSHs(newSVpv(pent->p_name, 0));
5184 PUSHs(space_join_names_mortal(pent->p_aliases));
5185 mPUSHi(pent->p_proto);
5190 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5195 /* also used for: pp_gsbyname() pp_gsbyport() */
5199 #if defined(HAS_GETSERVBYNAME) || defined(HAS_GETSERVBYPORT) || defined(HAS_GETSERVENT)
5201 I32 which = PL_op->op_type;
5203 #ifndef HAS_GETSERV_PROTOS /* XXX Do we need individual probes? */
5204 struct servent *getservbyname(Netdb_name_t, Netdb_name_t);
5205 struct servent *getservbyport(int, Netdb_name_t);
5206 struct servent *getservent(void);
5208 struct servent *sent;
5210 if (which == OP_GSBYNAME) {
5211 #ifdef HAS_GETSERVBYNAME
5212 const char * const proto = POPpbytex;
5213 const char * const name = POPpbytex;
5214 sent = PerlSock_getservbyname(name, (proto && !*proto) ? NULL : proto);
5216 DIE(aTHX_ PL_no_sock_func, "getservbyname");
5219 else if (which == OP_GSBYPORT) {
5220 #ifdef HAS_GETSERVBYPORT
5221 const char * const proto = POPpbytex;
5222 unsigned short port = (unsigned short)POPu;
5223 port = PerlSock_htons(port);
5224 sent = PerlSock_getservbyport(port, (proto && !*proto) ? NULL : proto);
5226 DIE(aTHX_ PL_no_sock_func, "getservbyport");
5230 #ifdef HAS_GETSERVENT
5231 sent = PerlSock_getservent();
5233 DIE(aTHX_ PL_no_sock_func, "getservent");
5237 if (GIMME_V != G_ARRAY) {
5238 PUSHs(sv = sv_newmortal());
5240 if (which == OP_GSBYNAME) {
5241 sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
5244 sv_setpv(sv, sent->s_name);
5250 mPUSHs(newSVpv(sent->s_name, 0));
5251 PUSHs(space_join_names_mortal(sent->s_aliases));
5252 mPUSHi(PerlSock_ntohs(sent->s_port));
5253 mPUSHs(newSVpv(sent->s_proto, 0));
5258 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5263 /* also used for: pp_snetent() pp_sprotoent() pp_sservent() */
5268 const int stayopen = TOPi;
5269 switch(PL_op->op_type) {
5271 #ifdef HAS_SETHOSTENT
5272 PerlSock_sethostent(stayopen);
5274 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5278 #ifdef HAS_SETNETENT
5279 PerlSock_setnetent(stayopen);
5281 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5285 #ifdef HAS_SETPROTOENT
5286 PerlSock_setprotoent(stayopen);
5288 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5292 #ifdef HAS_SETSERVENT
5293 PerlSock_setservent(stayopen);
5295 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5303 /* also used for: pp_egrent() pp_enetent() pp_eprotoent() pp_epwent()
5304 * pp_eservent() pp_sgrent() pp_spwent() */
5309 switch(PL_op->op_type) {
5311 #ifdef HAS_ENDHOSTENT
5312 PerlSock_endhostent();
5314 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5318 #ifdef HAS_ENDNETENT
5319 PerlSock_endnetent();
5321 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5325 #ifdef HAS_ENDPROTOENT
5326 PerlSock_endprotoent();
5328 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5332 #ifdef HAS_ENDSERVENT
5333 PerlSock_endservent();
5335 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5339 #if defined(HAS_GROUP) && defined(HAS_SETGRENT)
5342 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5346 #if defined(HAS_GROUP) && defined(HAS_ENDGRENT)
5349 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5353 #if defined(HAS_PASSWD) && defined(HAS_SETPWENT)
5356 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5360 #if defined(HAS_PASSWD) && defined(HAS_ENDPWENT)
5363 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5372 /* also used for: pp_gpwnam() pp_gpwuid() */
5378 I32 which = PL_op->op_type;
5380 struct passwd *pwent = NULL;
5382 * We currently support only the SysV getsp* shadow password interface.
5383 * The interface is declared in <shadow.h> and often one needs to link
5384 * with -lsecurity or some such.
5385 * This interface is used at least by Solaris, HP-UX, IRIX, and Linux.
5388 * AIX getpwnam() is clever enough to return the encrypted password
5389 * only if the caller (euid?) is root.
5391 * There are at least three other shadow password APIs. Many platforms
5392 * seem to contain more than one interface for accessing the shadow
5393 * password databases, possibly for compatibility reasons.
5394 * The getsp*() is by far he simplest one, the other two interfaces
5395 * are much more complicated, but also very similar to each other.
5400 * struct pr_passwd *getprpw*();
5401 * The password is in
5402 * char getprpw*(...).ufld.fd_encrypt[]
5403 * Mention HAS_GETPRPWNAM here so that Configure probes for it.
5408 * struct es_passwd *getespw*();
5409 * The password is in
5410 * char *(getespw*(...).ufld.fd_encrypt)
5411 * Mention HAS_GETESPWNAM here so that Configure probes for it.
5414 * struct userpw *getuserpw();
5415 * The password is in
5416 * char *(getuserpw(...)).spw_upw_passwd
5417 * (but the de facto standard getpwnam() should work okay)
5419 * Mention I_PROT here so that Configure probes for it.
5421 * In HP-UX for getprpw*() the manual page claims that one should include
5422 * <hpsecurity.h> instead of <sys/security.h>, but that is not needed
5423 * if one includes <shadow.h> as that includes <hpsecurity.h>,
5424 * and pp_sys.c already includes <shadow.h> if there is such.
5426 * Note that <sys/security.h> is already probed for, but currently
5427 * it is only included in special cases.
5429 * In Digital UNIX/Tru64 if using the getespw*() (which seems to be
5430 * the preferred interface, even though also the getprpw*() interface
5431 * is available) one needs to link with -lsecurity -ldb -laud -lm.
5432 * One also needs to call set_auth_parameters() in main() before
5433 * doing anything else, whether one is using getespw*() or getprpw*().
5435 * Note that accessing the shadow databases can be magnitudes
5436 * slower than accessing the standard databases.
5441 # if defined(__CYGWIN__) && defined(USE_REENTRANT_API)
5442 /* Cygwin 1.5.3-1 has buggy getpwnam_r() and getpwuid_r():
5443 * the pw_comment is left uninitialized. */
5444 PL_reentrant_buffer->_pwent_struct.pw_comment = NULL;
5450 const char* const name = POPpbytex;
5451 pwent = getpwnam(name);
5457 pwent = getpwuid(uid);
5461 # ifdef HAS_GETPWENT
5463 #ifdef POSIX_BC /* In some cases pw_passwd has invalid addresses */
5464 if (pwent) pwent = getpwnam(pwent->pw_name);
5467 DIE(aTHX_ PL_no_func, "getpwent");
5473 if (GIMME_V != G_ARRAY) {
5474 PUSHs(sv = sv_newmortal());
5476 if (which == OP_GPWNAM)
5477 sv_setuid(sv, pwent->pw_uid);
5479 sv_setpv(sv, pwent->pw_name);
5485 mPUSHs(newSVpv(pwent->pw_name, 0));
5489 /* If we have getspnam(), we try to dig up the shadow
5490 * password. If we are underprivileged, the shadow
5491 * interface will set the errno to EACCES or similar,
5492 * and return a null pointer. If this happens, we will
5493 * use the dummy password (usually "*" or "x") from the
5494 * standard password database.
5496 * In theory we could skip the shadow call completely
5497 * if euid != 0 but in practice we cannot know which
5498 * security measures are guarding the shadow databases
5499 * on a random platform.
5501 * Resist the urge to use additional shadow interfaces.
5502 * Divert the urge to writing an extension instead.
5505 /* Some AIX setups falsely(?) detect some getspnam(), which
5506 * has a different API than the Solaris/IRIX one. */
5507 # if defined(HAS_GETSPNAM) && !defined(_AIX)
5510 const struct spwd * const spwent = getspnam(pwent->pw_name);
5511 /* Save and restore errno so that
5512 * underprivileged attempts seem
5513 * to have never made the unsuccessful
5514 * attempt to retrieve the shadow password. */
5516 if (spwent && spwent->sp_pwdp)
5517 sv_setpv(sv, spwent->sp_pwdp);
5521 if (!SvPOK(sv)) /* Use the standard password, then. */
5522 sv_setpv(sv, pwent->pw_passwd);
5525 /* passwd is tainted because user himself can diddle with it.
5526 * admittedly not much and in a very limited way, but nevertheless. */
5529 sv_setuid(PUSHmortal, pwent->pw_uid);
5530 sv_setgid(PUSHmortal, pwent->pw_gid);
5532 /* pw_change, pw_quota, and pw_age are mutually exclusive--
5533 * because of the poor interface of the Perl getpw*(),
5534 * not because there's some standard/convention saying so.
5535 * A better interface would have been to return a hash,
5536 * but we are accursed by our history, alas. --jhi. */
5538 mPUSHi(pwent->pw_change);
5539 # elif defined(PWQUOTA)
5540 mPUSHi(pwent->pw_quota);
5541 # elif defined(PWAGE)
5542 mPUSHs(newSVpv(pwent->pw_age, 0));
5544 /* I think that you can never get this compiled, but just in case. */
5545 PUSHs(sv_mortalcopy(&PL_sv_no));
5548 /* pw_class and pw_comment are mutually exclusive--.
5549 * see the above note for pw_change, pw_quota, and pw_age. */
5551 mPUSHs(newSVpv(pwent->pw_class, 0));
5552 # elif defined(PWCOMMENT)
5553 mPUSHs(newSVpv(pwent->pw_comment, 0));
5555 /* I think that you can never get this compiled, but just in case. */
5556 PUSHs(sv_mortalcopy(&PL_sv_no));
5560 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_gecos, 0)));
5562 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5564 /* pw_gecos is tainted because user himself can diddle with it. */
5567 mPUSHs(newSVpv(pwent->pw_dir, 0));
5569 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_shell, 0)));
5570 /* pw_shell is tainted because user himself can diddle with it. */
5574 mPUSHi(pwent->pw_expire);
5579 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5584 /* also used for: pp_ggrgid() pp_ggrnam() */
5590 const I32 which = PL_op->op_type;
5591 const struct group *grent;
5593 if (which == OP_GGRNAM) {
5594 const char* const name = POPpbytex;
5595 grent = (const struct group *)getgrnam(name);
5597 else if (which == OP_GGRGID) {
5599 const Gid_t gid = POPu;
5600 #elif Gid_t_sign == -1
5601 const Gid_t gid = POPi;
5603 # error "Unexpected Gid_t_sign"
5605 grent = (const struct group *)getgrgid(gid);
5609 grent = (struct group *)getgrent();
5611 DIE(aTHX_ PL_no_func, "getgrent");
5615 if (GIMME_V != G_ARRAY) {
5616 SV * const sv = sv_newmortal();
5620 if (which == OP_GGRNAM)
5621 sv_setgid(sv, grent->gr_gid);
5623 sv_setpv(sv, grent->gr_name);
5629 mPUSHs(newSVpv(grent->gr_name, 0));
5632 mPUSHs(newSVpv(grent->gr_passwd, 0));
5634 PUSHs(sv_mortalcopy(&PL_sv_no));
5637 sv_setgid(PUSHmortal, grent->gr_gid);
5639 #if !(defined(_CRAYMPP) && defined(USE_REENTRANT_API))
5640 /* In UNICOS/mk (_CRAYMPP) the multithreading
5641 * versions (getgrnam_r, getgrgid_r)
5642 * seem to return an illegal pointer
5643 * as the group members list, gr_mem.
5644 * getgrent() doesn't even have a _r version
5645 * but the gr_mem is poisonous anyway.
5646 * So yes, you cannot get the list of group
5647 * members if building multithreaded in UNICOS/mk. */
5648 PUSHs(space_join_names_mortal(grent->gr_mem));
5654 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5664 if (!(tmps = PerlProc_getlogin()))
5666 sv_setpv_mg(TARG, tmps);
5670 DIE(aTHX_ PL_no_func, "getlogin");
5674 /* Miscellaneous. */
5679 dSP; dMARK; dORIGMARK; dTARGET;
5680 I32 items = SP - MARK;
5681 unsigned long a[20];
5686 while (++MARK <= SP) {
5687 if (SvTAINTED(*MARK)) {
5693 TAINT_PROPER("syscall");
5696 /* This probably won't work on machines where sizeof(long) != sizeof(int)
5697 * or where sizeof(long) != sizeof(char*). But such machines will
5698 * not likely have syscall implemented either, so who cares?
5700 while (++MARK <= SP) {
5701 if (SvNIOK(*MARK) || !i)
5702 a[i++] = SvIV(*MARK);
5703 else if (*MARK == &PL_sv_undef)
5706 a[i++] = (unsigned long)SvPV_force_nolen(*MARK);
5712 DIE(aTHX_ "Too many args to syscall");
5714 DIE(aTHX_ "Too few args to syscall");
5716 retval = syscall(a[0]);
5719 retval = syscall(a[0],a[1]);
5722 retval = syscall(a[0],a[1],a[2]);
5725 retval = syscall(a[0],a[1],a[2],a[3]);
5728 retval = syscall(a[0],a[1],a[2],a[3],a[4]);
5731 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5]);
5734 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6]);
5737 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7]);
5744 DIE(aTHX_ PL_no_func, "syscall");
5748 #ifdef FCNTL_EMULATE_FLOCK
5750 /* XXX Emulate flock() with fcntl().
5751 What's really needed is a good file locking module.
5755 fcntl_emulate_flock(int fd, int operation)
5760 switch (operation & ~LOCK_NB) {
5762 flock.l_type = F_RDLCK;
5765 flock.l_type = F_WRLCK;
5768 flock.l_type = F_UNLCK;
5774 flock.l_whence = SEEK_SET;
5775 flock.l_start = flock.l_len = (Off_t)0;
5777 res = fcntl(fd, (operation & LOCK_NB) ? F_SETLK : F_SETLKW, &flock);
5778 if (res == -1 && ((errno == EAGAIN) || (errno == EACCES)))
5779 errno = EWOULDBLOCK;
5783 #endif /* FCNTL_EMULATE_FLOCK */
5785 #ifdef LOCKF_EMULATE_FLOCK
5787 /* XXX Emulate flock() with lockf(). This is just to increase
5788 portability of scripts. The calls are not completely
5789 interchangeable. What's really needed is a good file
5793 /* The lockf() constants might have been defined in <unistd.h>.
5794 Unfortunately, <unistd.h> causes troubles on some mixed
5795 (BSD/POSIX) systems, such as SunOS 4.1.3.
5797 Further, the lockf() constants aren't POSIX, so they might not be
5798 visible if we're compiling with _POSIX_SOURCE defined. Thus, we'll
5799 just stick in the SVID values and be done with it. Sigh.
5803 # define F_ULOCK 0 /* Unlock a previously locked region */
5806 # define F_LOCK 1 /* Lock a region for exclusive use */
5809 # define F_TLOCK 2 /* Test and lock a region for exclusive use */
5812 # define F_TEST 3 /* Test a region for other processes locks */
5816 lockf_emulate_flock(int fd, int operation)
5822 /* flock locks entire file so for lockf we need to do the same */
5823 pos = PerlLIO_lseek(fd, (Off_t)0, SEEK_CUR); /* get pos to restore later */
5824 if (pos > 0) /* is seekable and needs to be repositioned */
5825 if (PerlLIO_lseek(fd, (Off_t)0, SEEK_SET) < 0)
5826 pos = -1; /* seek failed, so don't seek back afterwards */
5829 switch (operation) {
5831 /* LOCK_SH - get a shared lock */
5833 /* LOCK_EX - get an exclusive lock */
5835 i = lockf (fd, F_LOCK, 0);
5838 /* LOCK_SH|LOCK_NB - get a non-blocking shared lock */
5839 case LOCK_SH|LOCK_NB:
5840 /* LOCK_EX|LOCK_NB - get a non-blocking exclusive lock */
5841 case LOCK_EX|LOCK_NB:
5842 i = lockf (fd, F_TLOCK, 0);
5844 if ((errno == EAGAIN) || (errno == EACCES))
5845 errno = EWOULDBLOCK;
5848 /* LOCK_UN - unlock (non-blocking is a no-op) */
5850 case LOCK_UN|LOCK_NB:
5851 i = lockf (fd, F_ULOCK, 0);
5854 /* Default - can't decipher operation */
5861 if (pos > 0) /* need to restore position of the handle */
5862 PerlLIO_lseek(fd, pos, SEEK_SET); /* ignore error here */
5867 #endif /* LOCKF_EMULATE_FLOCK */
5870 * ex: set ts=8 sts=4 sw=4 et: