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_LIST && 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
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? */
2713 buf = SvPVbyte_nomg(sv, l);
2717 aint = (int)SvIV_nomg(sv);
2718 buf = (const char *) &aint;
2721 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
2731 SETERRNO(EBADF,SS_IVCHAN);
2738 /* also used for: pp_getsockname() */
2743 const int optype = PL_op->op_type;
2744 GV * const gv = MUTABLE_GV(POPs);
2745 IO * const io = GvIOn(gv);
2753 #ifdef HAS_SOCKADDR_STORAGE
2754 len = sizeof(struct sockaddr_storage);
2758 sv = sv_2mortal(newSV(len+1));
2759 (void)SvPOK_only(sv);
2762 fd = PerlIO_fileno(IoIFP(io));
2766 case OP_GETSOCKNAME:
2767 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2770 case OP_GETPEERNAME:
2771 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2773 #if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2775 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";
2776 /* If the call succeeded, make sure we don't have a zeroed port/addr */
2777 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2778 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
2779 sizeof(u_short) + sizeof(struct in_addr))) {
2786 #ifdef BOGUS_GETNAME_RETURN
2787 /* Interactive Unix, getpeername() and getsockname()
2788 does not return valid namelen */
2789 if (len == BOGUS_GETNAME_RETURN)
2790 len = sizeof(struct sockaddr);
2799 SETERRNO(EBADF,SS_IVCHAN);
2808 /* also used for: pp_lstat() */
2819 if (PL_op->op_flags & OPf_REF ? (gv = cGVOP_gv, 1)
2820 : !!(sv=POPs, gv = MAYBE_DEREF_GV(sv))) {
2821 if (PL_op->op_type == OP_LSTAT) {
2822 if (gv != PL_defgv) {
2823 do_fstat_warning_check:
2824 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
2825 "lstat() on filehandle%s%" SVf,
2828 ? sv_2mortal(newSVhek(GvENAME_HEK(gv)))
2830 } else if (PL_laststype != OP_LSTAT)
2831 /* diag_listed_as: The stat preceding %s wasn't an lstat */
2832 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
2835 if (gv == PL_defgv) {
2836 if (PL_laststatval < 0)
2837 SETERRNO(EBADF,RMS_IFI);
2840 PL_laststype = OP_STAT;
2841 PL_statgv = gv ? gv : (GV *)io;
2842 SvPVCLEAR(PL_statname);
2848 int fd = PerlIO_fileno(IoIFP(io));
2851 PL_laststatval = -1;
2852 SETERRNO(EBADF,RMS_IFI);
2854 PL_laststatval = PerlLIO_fstat(fd, &PL_statcache);
2856 } else if (IoDIRP(io)) {
2858 PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache);
2861 PL_laststatval = -1;
2862 SETERRNO(EBADF,RMS_IFI);
2866 PL_laststatval = -1;
2867 SETERRNO(EBADF,RMS_IFI);
2871 if (PL_laststatval < 0) {
2879 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2880 io = MUTABLE_IO(SvRV(sv));
2881 if (PL_op->op_type == OP_LSTAT)
2882 goto do_fstat_warning_check;
2883 goto do_fstat_have_io;
2885 SvTAINTED_off(PL_statname); /* previous tainting irrelevant */
2886 temp = SvPV_nomg_const(sv, len);
2887 sv_setpv(PL_statname, temp);
2889 PL_laststype = PL_op->op_type;
2890 file = SvPV_nolen_const(PL_statname);
2891 if (!IS_SAFE_PATHNAME(temp, len, OP_NAME(PL_op))) {
2892 PL_laststatval = -1;
2894 else if (PL_op->op_type == OP_LSTAT)
2895 PL_laststatval = PerlLIO_lstat(file, &PL_statcache);
2897 PL_laststatval = PerlLIO_stat(file, &PL_statcache);
2898 if (PL_laststatval < 0) {
2899 if (ckWARN(WARN_NEWLINE) && should_warn_nl(file)) {
2900 /* PL_warn_nl is constant */
2901 GCC_DIAG_IGNORE_STMT(-Wformat-nonliteral);
2902 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
2903 GCC_DIAG_RESTORE_STMT;
2910 if (gimme != G_LIST) {
2911 if (gimme != G_VOID)
2912 XPUSHs(boolSV(max));
2918 mPUSHi(PL_statcache.st_dev);
2921 * We try to represent st_ino as a native IV or UV where
2922 * possible, but fall back to a decimal string where
2923 * necessary. The code to generate these decimal strings
2924 * is quite obtuse, because (a) we're portable to non-POSIX
2925 * platforms where st_ino might be signed; (b) we didn't
2926 * necessarily detect at Configure time whether st_ino is
2927 * signed; (c) we're portable to non-POSIX platforms where
2928 * ino_t isn't defined, so have no name for the type of
2929 * st_ino; and (d) sprintf() doesn't necessarily support
2930 * integers as large as st_ino.
2934 CLANG_DIAG_IGNORE_STMT(-Wtautological-compare);
2935 GCC_DIAG_IGNORE_STMT(-Wtype-limits);
2936 neg = PL_statcache.st_ino < 0;
2937 GCC_DIAG_RESTORE_STMT;
2938 CLANG_DIAG_RESTORE_STMT;
2940 s.st_ino = (IV)PL_statcache.st_ino;
2941 if (LIKELY(s.st_ino == PL_statcache.st_ino)) {
2944 char buf[sizeof(s.st_ino)*3+1], *p;
2945 s.st_ino = PL_statcache.st_ino;
2946 for (p = buf + sizeof(buf); p != buf+1; ) {
2948 t.st_ino = s.st_ino / 10;
2949 *--p = '0' + (int)(t.st_ino*10 - s.st_ino);
2950 s.st_ino = t.st_ino;
2955 mPUSHp(p, buf+sizeof(buf) - p);
2958 s.st_ino = (UV)PL_statcache.st_ino;
2959 if (LIKELY(s.st_ino == PL_statcache.st_ino)) {
2962 char buf[sizeof(s.st_ino)*3], *p;
2963 s.st_ino = PL_statcache.st_ino;
2964 for (p = buf + sizeof(buf); p != buf; ) {
2966 t.st_ino = s.st_ino / 10;
2967 *--p = '0' + (int)(s.st_ino - t.st_ino*10);
2968 s.st_ino = t.st_ino;
2972 mPUSHp(p, buf+sizeof(buf) - p);
2976 mPUSHu(PL_statcache.st_mode);
2977 mPUSHu(PL_statcache.st_nlink);
2979 sv_setuid(PUSHmortal, PL_statcache.st_uid);
2980 sv_setgid(PUSHmortal, PL_statcache.st_gid);
2982 #ifdef USE_STAT_RDEV
2983 mPUSHi(PL_statcache.st_rdev);
2985 PUSHs(newSVpvs_flags("", SVs_TEMP));
2987 #if Off_t_size > IVSIZE
2988 mPUSHn(PL_statcache.st_size);
2990 mPUSHi(PL_statcache.st_size);
2993 mPUSHn(PL_statcache.st_atime);
2994 mPUSHn(PL_statcache.st_mtime);
2995 mPUSHn(PL_statcache.st_ctime);
2997 mPUSHi(PL_statcache.st_atime);
2998 mPUSHi(PL_statcache.st_mtime);
2999 mPUSHi(PL_statcache.st_ctime);
3001 #ifdef USE_STAT_BLOCKS
3002 mPUSHu(PL_statcache.st_blksize);
3003 mPUSHu(PL_statcache.st_blocks);
3005 PUSHs(newSVpvs_flags("", SVs_TEMP));
3006 PUSHs(newSVpvs_flags("", SVs_TEMP));
3012 /* All filetest ops avoid manipulating the perl stack pointer in their main
3013 bodies (since commit d2c4d2d1e22d3125), and return using either
3014 S_ft_return_false() or S_ft_return_true(). These two helper functions are
3015 the only two which manipulate the perl stack. To ensure that no stack
3016 manipulation macros are used, the filetest ops avoid defining a local copy
3017 of the stack pointer with dSP. */
3019 /* If the next filetest is stacked up with this one
3020 (PL_op->op_private & OPpFT_STACKING), we leave
3021 the original argument on the stack for success,
3022 and skip the stacked operators on failure.
3023 The next few macros/functions take care of this.
3027 S_ft_return_false(pTHX_ SV *ret) {
3031 if (PL_op->op_flags & OPf_REF) XPUSHs(ret);
3035 if (PL_op->op_private & OPpFT_STACKING) {
3036 while (next && OP_IS_FILETEST(next->op_type)
3037 && next->op_private & OPpFT_STACKED)
3038 next = next->op_next;
3043 PERL_STATIC_INLINE OP *
3044 S_ft_return_true(pTHX_ SV *ret) {
3046 if (PL_op->op_flags & OPf_REF)
3047 XPUSHs(PL_op->op_private & OPpFT_STACKING ? (SV *)cGVOP_gv : (ret));
3048 else if (!(PL_op->op_private & OPpFT_STACKING))
3054 #define FT_RETURNNO return S_ft_return_false(aTHX_ &PL_sv_no)
3055 #define FT_RETURNUNDEF return S_ft_return_false(aTHX_ &PL_sv_undef)
3056 #define FT_RETURNYES return S_ft_return_true(aTHX_ &PL_sv_yes)
3058 #define tryAMAGICftest_MG(chr) STMT_START { \
3059 if ( (SvFLAGS(*PL_stack_sp) & (SVf_ROK|SVs_GMG)) \
3060 && PL_op->op_flags & OPf_KIDS) { \
3061 OP *next = S_try_amagic_ftest(aTHX_ chr); \
3062 if (next) return next; \
3067 S_try_amagic_ftest(pTHX_ char chr) {
3068 SV *const arg = *PL_stack_sp;
3071 if (!(PL_op->op_private & OPpFT_STACKED)) SvGETMAGIC(arg);
3075 const char tmpchr = chr;
3076 SV * const tmpsv = amagic_call(arg,
3077 newSVpvn_flags(&tmpchr, 1, SVs_TEMP),
3078 ftest_amg, AMGf_unary);
3083 return SvTRUE(tmpsv)
3084 ? S_ft_return_true(aTHX_ tmpsv) : S_ft_return_false(aTHX_ tmpsv);
3090 /* also used for: pp_fteexec() pp_fteread() pp_ftewrite() pp_ftrexec()
3096 /* Not const, because things tweak this below. Not bool, because there's
3097 no guarantee that OPpFT_ACCESS is <= CHAR_MAX */
3098 #if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
3099 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
3100 /* Giving some sort of initial value silences compilers. */
3102 int access_mode = R_OK;
3104 int access_mode = 0;
3107 /* access_mode is never used, but leaving use_access in makes the
3108 conditional compiling below much clearer. */
3111 Mode_t stat_mode = S_IRUSR;
3113 bool effective = FALSE;
3116 switch (PL_op->op_type) {
3117 case OP_FTRREAD: opchar = 'R'; break;
3118 case OP_FTRWRITE: opchar = 'W'; break;
3119 case OP_FTREXEC: opchar = 'X'; break;
3120 case OP_FTEREAD: opchar = 'r'; break;
3121 case OP_FTEWRITE: opchar = 'w'; break;
3122 case OP_FTEEXEC: opchar = 'x'; break;
3124 tryAMAGICftest_MG(opchar);
3126 switch (PL_op->op_type) {
3128 #if !(defined(HAS_ACCESS) && defined(R_OK))
3134 #if defined(HAS_ACCESS) && defined(W_OK)
3139 stat_mode = S_IWUSR;
3143 #if defined(HAS_ACCESS) && defined(X_OK)
3148 stat_mode = S_IXUSR;
3152 #ifdef PERL_EFF_ACCESS
3155 stat_mode = S_IWUSR;
3159 #ifndef PERL_EFF_ACCESS
3166 #ifdef PERL_EFF_ACCESS
3171 stat_mode = S_IXUSR;
3177 #if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
3179 const char *name = SvPV(*PL_stack_sp, len);
3180 if (!IS_SAFE_PATHNAME(name, len, OP_NAME(PL_op))) {
3183 else if (effective) {
3184 # ifdef PERL_EFF_ACCESS
3185 result = PERL_EFF_ACCESS(name, access_mode);
3187 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
3193 result = access(name, access_mode);
3195 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
3206 result = my_stat_flags(0);
3209 if (cando(stat_mode, effective, &PL_statcache))
3215 /* also used for: pp_ftatime() pp_ftctime() pp_ftmtime() pp_ftsize() */
3220 const int op_type = PL_op->op_type;
3224 case OP_FTIS: opchar = 'e'; break;
3225 case OP_FTSIZE: opchar = 's'; break;
3226 case OP_FTMTIME: opchar = 'M'; break;
3227 case OP_FTCTIME: opchar = 'C'; break;
3228 case OP_FTATIME: opchar = 'A'; break;
3230 tryAMAGICftest_MG(opchar);
3232 result = my_stat_flags(0);
3235 if (op_type == OP_FTIS)
3238 /* You can't dTARGET inside OP_FTIS, because you'll get
3239 "panic: pad_sv po" - the op is not flagged to have a target. */
3243 #if Off_t_size > IVSIZE
3244 sv_setnv(TARG, (NV)PL_statcache.st_size);
3246 sv_setiv(TARG, (IV)PL_statcache.st_size);
3251 ((NV)PL_basetime - PL_statcache.st_mtime) / 86400.0 );
3255 ((NV)PL_basetime - PL_statcache.st_atime) / 86400.0 );
3259 ((NV)PL_basetime - PL_statcache.st_ctime) / 86400.0 );
3263 return SvTRUE_nomg_NN(TARG)
3264 ? S_ft_return_true(aTHX_ TARG) : S_ft_return_false(aTHX_ TARG);
3269 /* also used for: pp_ftblk() pp_ftchr() pp_ftdir() pp_fteowned()
3270 * pp_ftfile() pp_ftpipe() pp_ftsgid() pp_ftsock()
3271 * pp_ftsuid() pp_ftsvtx() pp_ftzero() */
3278 switch (PL_op->op_type) {
3279 case OP_FTROWNED: opchar = 'O'; break;
3280 case OP_FTEOWNED: opchar = 'o'; break;
3281 case OP_FTZERO: opchar = 'z'; break;
3282 case OP_FTSOCK: opchar = 'S'; break;
3283 case OP_FTCHR: opchar = 'c'; break;
3284 case OP_FTBLK: opchar = 'b'; break;
3285 case OP_FTFILE: opchar = 'f'; break;
3286 case OP_FTDIR: opchar = 'd'; break;
3287 case OP_FTPIPE: opchar = 'p'; break;
3288 case OP_FTSUID: opchar = 'u'; break;
3289 case OP_FTSGID: opchar = 'g'; break;
3290 case OP_FTSVTX: opchar = 'k'; break;
3292 tryAMAGICftest_MG(opchar);
3294 result = my_stat_flags(0);
3297 switch (PL_op->op_type) {
3299 if (PL_statcache.st_uid == PerlProc_getuid())
3303 if (PL_statcache.st_uid == PerlProc_geteuid())
3307 if (PL_statcache.st_size == 0)
3311 if (S_ISSOCK(PL_statcache.st_mode))
3315 if (S_ISCHR(PL_statcache.st_mode))
3319 if (S_ISBLK(PL_statcache.st_mode))
3323 if (S_ISREG(PL_statcache.st_mode))
3327 if (S_ISDIR(PL_statcache.st_mode))
3331 if (S_ISFIFO(PL_statcache.st_mode))
3336 if (PL_statcache.st_mode & S_ISUID)
3342 if (PL_statcache.st_mode & S_ISGID)
3348 if (PL_statcache.st_mode & S_ISVTX)
3360 tryAMAGICftest_MG('l');
3361 result = my_lstat_flags(0);
3365 if (S_ISLNK(PL_statcache.st_mode))
3378 tryAMAGICftest_MG('t');
3380 if (PL_op->op_flags & OPf_REF)
3383 SV *tmpsv = *PL_stack_sp;
3384 if (!(gv = MAYBE_DEREF_GV_nomg(tmpsv))) {
3385 name = SvPV_nomg(tmpsv, namelen);
3386 gv = gv_fetchpvn_flags(name, namelen, SvUTF8(tmpsv), SVt_PVIO);
3390 if (GvIO(gv) && IoIFP(GvIOp(gv)))
3391 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
3392 else if (name && isDIGIT(*name) && grok_atoUV(name, &uv, NULL) && uv <= PERL_INT_MAX)
3397 SETERRNO(EBADF,RMS_IFI);
3400 if (PerlLIO_isatty(fd))
3406 /* also used for: pp_ftbinary() */
3419 const U8 * first_variant;
3421 tryAMAGICftest_MG(PL_op->op_type == OP_FTTEXT ? 'T' : 'B');
3423 if (PL_op->op_flags & OPf_REF)
3425 else if ((PL_op->op_private & (OPpFT_STACKED|OPpFT_AFTER_t))
3430 gv = MAYBE_DEREF_GV_nomg(sv);
3434 if (gv == PL_defgv) {
3436 io = SvTYPE(PL_statgv) == SVt_PVIO
3440 goto really_filename;
3445 SvPVCLEAR(PL_statname);
3446 io = GvIO(PL_statgv);
3448 PL_laststatval = -1;
3449 PL_laststype = OP_STAT;
3450 if (io && IoIFP(io)) {
3452 if (! PerlIO_has_base(IoIFP(io)))
3453 DIE(aTHX_ "-T and -B not implemented on filehandles");
3454 fd = PerlIO_fileno(IoIFP(io));
3456 SETERRNO(EBADF,RMS_IFI);
3459 PL_laststatval = PerlLIO_fstat(fd, &PL_statcache);
3460 if (PL_laststatval < 0)
3462 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
3463 if (PL_op->op_type == OP_FTTEXT)
3468 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
3469 i = PerlIO_getc(IoIFP(io));
3471 (void)PerlIO_ungetc(IoIFP(io),i);
3473 /* null file is anything */
3476 len = PerlIO_get_bufsiz(IoIFP(io));
3477 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
3478 /* sfio can have large buffers - limit to 512 */
3483 SETERRNO(EBADF,RMS_IFI);
3485 SETERRNO(EBADF,RMS_IFI);
3496 temp = SvPV_nomg_const(sv, temp_len);
3497 sv_setpv(PL_statname, temp);
3498 if (!IS_SAFE_PATHNAME(temp, temp_len, OP_NAME(PL_op))) {
3499 PL_laststatval = -1;
3500 PL_laststype = OP_STAT;
3504 file = SvPVX_const(PL_statname);
3506 if (!(fp = PerlIO_open(file, "r"))) {
3508 PL_laststatval = -1;
3509 PL_laststype = OP_STAT;
3511 if (ckWARN(WARN_NEWLINE) && should_warn_nl(file)) {
3512 /* PL_warn_nl is constant */
3513 GCC_DIAG_IGNORE_STMT(-Wformat-nonliteral);
3514 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
3515 GCC_DIAG_RESTORE_STMT;
3519 PL_laststype = OP_STAT;
3520 fd = PerlIO_fileno(fp);
3522 (void)PerlIO_close(fp);
3523 SETERRNO(EBADF,RMS_IFI);
3526 PL_laststatval = PerlLIO_fstat(fd, &PL_statcache);
3527 if (PL_laststatval < 0) {
3529 (void)PerlIO_close(fp);
3533 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, NULL);
3534 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3535 (void)PerlIO_close(fp);
3537 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
3538 FT_RETURNNO; /* special case NFS directories */
3539 FT_RETURNYES; /* null file is anything */
3544 /* now scan s to look for textiness */
3546 #if defined(DOSISH) || defined(USEMYBINMODE)
3547 /* ignore trailing ^Z on short files */
3548 if (len && len < (I32)sizeof(tbuf) && tbuf[len-1] == 26)
3553 if (! is_utf8_invariant_string_loc((U8 *) s, len, &first_variant)) {
3555 /* Here contains a variant under UTF-8 . See if the entire string is
3557 if (is_utf8_fixed_width_buf_flags(first_variant,
3558 len - ((char *) first_variant - (char *) s),
3561 if (PL_op->op_type == OP_FTTEXT) {
3570 /* Here, is not UTF-8 or is entirely ASCII. Look through the buffer for
3571 * things that wouldn't be in ASCII text or rich ASCII text. Count these
3573 for (i = 0; i < len; i++, s++) {
3574 if (!*s) { /* null never allowed in text */
3578 #ifdef USE_LOCALE_CTYPE
3579 if (IN_LC_RUNTIME(LC_CTYPE)) {
3580 if ( isPRINT_LC(*s) || isSPACE_LC(*s)) {
3587 /* VT occurs so rarely in text, that we consider it odd */
3588 || (isSPACE_A(*s) && *s != VT_NATIVE)
3590 /* But there is a fair amount of backspaces and escapes in
3593 || *s == ESC_NATIVE)
3600 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
3611 const char *tmps = NULL;
3615 SV * const sv = POPs;
3616 if (PL_op->op_flags & OPf_SPECIAL) {
3617 gv = gv_fetchsv(sv, 0, SVt_PVIO);
3619 if (ckWARN(WARN_UNOPENED)) {
3620 Perl_warner(aTHX_ packWARN(WARN_UNOPENED),
3621 "chdir() on unopened filehandle %" SVf, sv);
3623 SETERRNO(EBADF,RMS_IFI);
3625 TAINT_PROPER("chdir");
3629 else if (!(gv = MAYBE_DEREF_GV(sv)))
3630 tmps = SvPV_nomg_const_nolen(sv);
3633 HV * const table = GvHVn(PL_envgv);
3637 if ( (svp = hv_fetchs(table, "HOME", FALSE))
3638 || (svp = hv_fetchs(table, "LOGDIR", FALSE))
3640 || (svp = hv_fetchs(table, "SYS$LOGIN", FALSE))
3644 tmps = SvPV_nolen_const(*svp);
3648 SETERRNO(EINVAL, LIB_INVARG);
3649 TAINT_PROPER("chdir");
3654 TAINT_PROPER("chdir");
3657 IO* const io = GvIO(gv);
3660 PUSHi(fchdir(my_dirfd(IoDIRP(io))) >= 0);
3661 } else if (IoIFP(io)) {
3662 int fd = PerlIO_fileno(IoIFP(io));
3666 PUSHi(fchdir(fd) >= 0);
3676 DIE(aTHX_ PL_no_func, "fchdir");
3680 PUSHi( PerlDir_chdir(tmps) >= 0 );
3682 /* Clear the DEFAULT element of ENV so we'll get the new value
3684 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
3691 SETERRNO(EBADF,RMS_IFI);
3698 /* also used for: pp_chmod() pp_kill() pp_unlink() pp_utime() */
3702 dSP; dMARK; dTARGET;
3703 const I32 value = (I32)apply(PL_op->op_type, MARK, SP);
3714 char * const tmps = POPpx;
3715 TAINT_PROPER("chroot");
3716 PUSHi( chroot(tmps) >= 0 );
3719 DIE(aTHX_ PL_no_func, "chroot");
3730 const char * const tmps2 = POPpconstx;
3731 const char * const tmps = SvPV_nolen_const(TOPs);
3732 TAINT_PROPER("rename");
3734 anum = PerlLIO_rename(tmps, tmps2);
3736 if (!(anum = PerlLIO_stat(tmps, &statbuf))) {
3737 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3740 if (PerlProc_geteuid() || PerlLIO_stat(tmps2, &statbuf) < 0 || !S_ISDIR(statbuf.st_mode))
3741 (void)UNLINK(tmps2);
3742 if (!(anum = link(tmps, tmps2)))
3743 anum = UNLINK(tmps);
3752 /* also used for: pp_symlink() */
3754 #if defined(HAS_LINK) || defined(HAS_SYMLINK)
3758 const int op_type = PL_op->op_type;
3762 if (op_type == OP_LINK)
3763 DIE(aTHX_ PL_no_func, "link");
3765 # ifndef HAS_SYMLINK
3766 if (op_type == OP_SYMLINK)
3767 DIE(aTHX_ PL_no_func, "symlink");
3771 const char * const tmps2 = POPpconstx;
3772 const char * const tmps = SvPV_nolen_const(TOPs);
3773 TAINT_PROPER(PL_op_desc[op_type]);
3775 # if defined(HAS_LINK) && defined(HAS_SYMLINK)
3776 /* Both present - need to choose which. */
3777 (op_type == OP_LINK) ?
3778 PerlLIO_link(tmps, tmps2) : PerlLIO_symlink(tmps, tmps2);
3779 # elif defined(HAS_LINK)
3780 /* Only have link, so calls to pp_symlink will have DIE()d above. */
3781 PerlLIO_link(tmps, tmps2);
3782 # elif defined(HAS_SYMLINK)
3783 /* Only have symlink, so calls to pp_link will have DIE()d above. */
3784 PerlLIO_symlink(tmps, tmps2);
3788 SETi( result >= 0 );
3793 /* also used for: pp_symlink() */
3798 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
3808 char buf[MAXPATHLEN];
3813 /* NOTE: if the length returned by readlink() is sizeof(buf) - 1,
3814 * it is impossible to know whether the result was truncated. */
3815 len = PerlLIO_readlink(tmps, buf, sizeof(buf) - 1);
3823 RETSETUNDEF; /* just pretend it's a normal file */
3827 #if !defined(HAS_MKDIR) || !defined(HAS_RMDIR)
3829 S_dooneliner(pTHX_ const char *cmd, const char *filename)
3831 char * const save_filename = filename;
3836 Size_t size = strlen(cmd) + (strlen(filename) * 2) + 10;
3838 PERL_ARGS_ASSERT_DOONELINER;
3840 Newx(cmdline, size, char);
3841 my_strlcpy(cmdline, cmd, size);
3842 my_strlcat(cmdline, " ", size);
3843 for (s = cmdline + strlen(cmdline); *filename; ) {
3847 if (s - cmdline < size)
3848 my_strlcpy(s, " 2>&1", size - (s - cmdline));
3849 myfp = PerlProc_popen(cmdline, "r");
3853 SV * const tmpsv = sv_newmortal();
3854 /* Need to save/restore 'PL_rs' ?? */
3855 s = sv_gets(tmpsv, myfp, 0);
3856 (void)PerlProc_pclose(myfp);
3860 #ifdef HAS_SYS_ERRLIST
3865 /* you don't see this */
3866 const char * const errmsg = Strerror(e) ;
3869 if (instr(s, errmsg)) {
3876 #define EACCES EPERM
3878 if (instr(s, "cannot make"))
3879 SETERRNO(EEXIST,RMS_FEX);
3880 else if (instr(s, "existing file"))
3881 SETERRNO(EEXIST,RMS_FEX);
3882 else if (instr(s, "ile exists"))
3883 SETERRNO(EEXIST,RMS_FEX);
3884 else if (instr(s, "non-exist"))
3885 SETERRNO(ENOENT,RMS_FNF);
3886 else if (instr(s, "does not exist"))
3887 SETERRNO(ENOENT,RMS_FNF);
3888 else if (instr(s, "not empty"))
3889 SETERRNO(EBUSY,SS_DEVOFFLINE);
3890 else if (instr(s, "cannot access"))
3891 SETERRNO(EACCES,RMS_PRV);
3893 SETERRNO(EPERM,RMS_PRV);
3896 else { /* some mkdirs return no failure indication */
3898 anum = (PerlLIO_stat(save_filename, &statbuf) >= 0);
3899 if (PL_op->op_type == OP_RMDIR)
3904 SETERRNO(EACCES,RMS_PRV); /* a guess */
3913 /* This macro removes trailing slashes from a directory name.
3914 * Different operating and file systems take differently to
3915 * trailing slashes. According to POSIX 1003.1 1996 Edition
3916 * any number of trailing slashes should be allowed.
3917 * Thusly we snip them away so that even non-conforming
3918 * systems are happy.
3919 * We should probably do this "filtering" for all
3920 * the functions that expect (potentially) directory names:
3921 * -d, chdir(), chmod(), chown(), chroot(), fcntl()?,
3922 * (mkdir()), opendir(), rename(), rmdir(), stat(). --jhi */
3924 #define TRIMSLASHES(tmps,len,copy) (tmps) = SvPV_const(TOPs, (len)); \
3925 if ((len) > 1 && (tmps)[(len)-1] == '/') { \
3928 } while ((len) > 1 && (tmps)[(len)-1] == '/'); \
3929 (tmps) = savepvn((tmps), (len)); \
3939 const unsigned int mode = (MAXARG > 1 && (TOPs||((void)POPs,0))) ? POPu : 0777;
3941 TRIMSLASHES(tmps,len,copy);
3943 TAINT_PROPER("mkdir");
3945 SETi( PerlDir_mkdir(tmps, mode) >= 0 );
3949 SETi( dooneliner("mkdir", tmps) );
3950 oldumask = PerlLIO_umask(0);
3951 PerlLIO_umask(oldumask);
3952 PerlLIO_chmod(tmps, (mode & ~oldumask) & 0777);
3967 TRIMSLASHES(tmps,len,copy);
3968 TAINT_PROPER("rmdir");
3970 SETi( PerlDir_rmdir(tmps) >= 0 );
3972 SETi( dooneliner("rmdir", tmps) );
3979 /* Directory calls. */
3983 #if defined(Direntry_t) && defined(HAS_READDIR)
3985 const char * const dirname = POPpconstx;
3986 GV * const gv = MUTABLE_GV(POPs);
3987 IO * const io = GvIOn(gv);
3989 if ((IoIFP(io) || IoOFP(io)))
3990 Perl_croak(aTHX_ "Cannot open %" HEKf " as a dirhandle: it is already open as a filehandle",
3991 HEKfARG(GvENAME_HEK(gv)));
3993 PerlDir_close(IoDIRP(io));
3994 if (!(IoDIRP(io) = PerlDir_open(dirname)))
4000 SETERRNO(EBADF,RMS_DIR);
4003 DIE(aTHX_ PL_no_dir_func, "opendir");
4009 #if !defined(Direntry_t) || !defined(HAS_READDIR)
4010 DIE(aTHX_ PL_no_dir_func, "readdir");
4012 #if !defined(I_DIRENT) && !defined(VMS)
4013 Direntry_t *readdir (DIR *);
4018 const U8 gimme = GIMME_V;
4019 GV * const gv = MUTABLE_GV(POPs);
4020 const Direntry_t *dp;
4021 IO * const io = GvIOn(gv);
4024 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
4025 "readdir() attempted on invalid dirhandle %" HEKf,
4026 HEKfARG(GvENAME_HEK(gv)));
4031 dp = (Direntry_t *)PerlDir_read(IoDIRP(io));
4035 sv = newSVpvn(dp->d_name, dp->d_namlen);
4037 sv = newSVpv(dp->d_name, 0);
4039 if (!(IoFLAGS(io) & IOf_UNTAINT))
4042 } while (gimme == G_LIST);
4044 if (!dp && gimme != G_LIST)
4051 SETERRNO(EBADF,RMS_ISI);
4052 if (gimme == G_LIST)
4061 #if defined(HAS_TELLDIR) || defined(telldir)
4063 /* XXX does _anyone_ need this? --AD 2/20/1998 */
4064 /* XXX netbsd still seemed to.
4065 XXX HAS_TELLDIR_PROTO is new style, NEED_TELLDIR_PROTO is old style.
4066 --JHI 1999-Feb-02 */
4067 # if !defined(HAS_TELLDIR_PROTO) || defined(NEED_TELLDIR_PROTO)
4068 long telldir (DIR *);
4070 GV * const gv = MUTABLE_GV(POPs);
4071 IO * const io = GvIOn(gv);
4074 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
4075 "telldir() attempted on invalid dirhandle %" HEKf,
4076 HEKfARG(GvENAME_HEK(gv)));
4080 PUSHi( PerlDir_tell(IoDIRP(io)) );
4084 SETERRNO(EBADF,RMS_ISI);
4087 DIE(aTHX_ PL_no_dir_func, "telldir");
4093 #if defined(HAS_SEEKDIR) || defined(seekdir)
4095 const long along = POPl;
4096 GV * const gv = MUTABLE_GV(POPs);
4097 IO * const io = GvIOn(gv);
4100 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
4101 "seekdir() attempted on invalid dirhandle %" HEKf,
4102 HEKfARG(GvENAME_HEK(gv)));
4105 (void)PerlDir_seek(IoDIRP(io), along);
4110 SETERRNO(EBADF,RMS_ISI);
4113 DIE(aTHX_ PL_no_dir_func, "seekdir");
4119 #if defined(HAS_REWINDDIR) || defined(rewinddir)
4121 GV * const gv = MUTABLE_GV(POPs);
4122 IO * const io = GvIOn(gv);
4125 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
4126 "rewinddir() attempted on invalid dirhandle %" HEKf,
4127 HEKfARG(GvENAME_HEK(gv)));
4130 (void)PerlDir_rewind(IoDIRP(io));
4134 SETERRNO(EBADF,RMS_ISI);
4137 DIE(aTHX_ PL_no_dir_func, "rewinddir");
4143 #if defined(Direntry_t) && defined(HAS_READDIR)
4145 GV * const gv = MUTABLE_GV(POPs);
4146 IO * const io = GvIOn(gv);
4149 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
4150 "closedir() attempted on invalid dirhandle %" HEKf,
4151 HEKfARG(GvENAME_HEK(gv)));
4154 #ifdef VOID_CLOSEDIR
4155 PerlDir_close(IoDIRP(io));
4157 if (PerlDir_close(IoDIRP(io)) < 0) {
4158 IoDIRP(io) = 0; /* Don't try to close again--coredumps on SysV */
4167 SETERRNO(EBADF,RMS_IFI);
4170 DIE(aTHX_ PL_no_dir_func, "closedir");
4174 /* Process control. */
4181 #ifdef HAS_SIGPROCMASK
4182 sigset_t oldmask, newmask;
4186 PERL_FLUSHALL_FOR_CHILD;
4187 #ifdef HAS_SIGPROCMASK
4188 sigfillset(&newmask);
4189 sigprocmask(SIG_SETMASK, &newmask, &oldmask);
4191 childpid = PerlProc_fork();
4192 if (childpid == 0) {
4196 for (sig = 1; sig < SIG_SIZE; sig++)
4197 PL_psig_pend[sig] = 0;
4199 #ifdef HAS_SIGPROCMASK
4202 sigprocmask(SIG_SETMASK, &oldmask, NULL);
4209 #ifdef PERL_USES_PL_PIDSTATUS
4210 hv_clear(PL_pidstatus); /* no kids, so don't wait for 'em */
4215 #elif (defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)) || defined(__amigaos4__)
4220 PERL_FLUSHALL_FOR_CHILD;
4221 childpid = PerlProc_fork();
4227 DIE(aTHX_ PL_no_func, "fork");
4233 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(__LIBCATAMOUNT__)
4238 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
4239 childpid = wait4pid(-1, &argflags, 0);
4241 while ((childpid = wait4pid(-1, &argflags, 0)) == -1 &&
4246 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4247 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
4248 STATUS_NATIVE_CHILD_SET((childpid && childpid != -1) ? argflags : -1);
4250 STATUS_NATIVE_CHILD_SET((childpid > 0) ? argflags : -1);
4255 DIE(aTHX_ PL_no_func, "wait");
4261 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(__LIBCATAMOUNT__)
4263 const int optype = POPi;
4264 const Pid_t pid = TOPi;
4268 result = amigaos_waitpid(aTHX_ optype, pid, &argflags);
4269 STATUS_NATIVE_CHILD_SET((result >= 0) ? argflags : -1);
4270 result = result == 0 ? pid : -1;
4274 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
4275 result = wait4pid(pid, &argflags, optype);
4277 while ((result = wait4pid(pid, &argflags, optype)) == -1 &&
4282 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4283 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
4284 STATUS_NATIVE_CHILD_SET((result && result != -1) ? argflags : -1);
4286 STATUS_NATIVE_CHILD_SET((result > 0) ? argflags : -1);
4288 # endif /* __amigaos4__ */
4292 DIE(aTHX_ PL_no_func, "waitpid");
4298 dSP; dMARK; dORIGMARK; dTARGET;
4299 #if defined(__LIBCATAMOUNT__)
4300 PL_statusvalue = -1;
4305 # ifdef __amigaos4__
4311 while (++MARK <= SP) {
4312 SV *origsv = *MARK, *copysv;
4316 #if defined(WIN32) || defined(__VMS)
4318 * Because of a nasty platform-specific variation on the meaning
4319 * of arguments to this op, we must preserve numeric arguments
4320 * as numeric, not just retain the string value.
4322 if (SvNIOK(origsv) || SvNIOKp(origsv)) {
4323 copysv = newSV_type(SVt_PVNV);
4325 if (SvPOK(origsv) || SvPOKp(origsv)) {
4326 pv = SvPV_nomg(origsv, len);
4327 sv_setpvn(copysv, pv, len);
4330 if (SvIOK(origsv) || SvIOKp(origsv))
4331 SvIV_set(copysv, SvIVX(origsv));
4332 if (SvNOK(origsv) || SvNOKp(origsv))
4333 SvNV_set(copysv, SvNVX(origsv));
4334 SvFLAGS(copysv) |= SvFLAGS(origsv) &
4335 (SVf_IOK|SVf_NOK|SVf_POK|SVp_IOK|SVp_NOK|SVp_POK|
4336 SVf_UTF8|SVf_IVisUV);
4340 pv = SvPV_nomg(origsv, len);
4341 copysv = newSVpvn_flags(pv, len,
4342 (SvFLAGS(origsv) & SVf_UTF8) | SVs_TEMP);
4350 TAINT_PROPER("system");
4352 PERL_FLUSHALL_FOR_CHILD;
4353 #if (defined(HAS_FORK) || defined(__amigaos4__)) && !defined(VMS) && !defined(OS2) || defined(PERL_MICRO)
4356 struct UserData userdata;
4363 bool child_success = FALSE;
4364 #ifdef HAS_SIGPROCMASK
4365 sigset_t newset, oldset;
4368 if (PerlProc_pipe_cloexec(pp) >= 0)
4371 amigaos_fork_set_userdata(aTHX_
4377 pthread_create(&proc,NULL,amigaos_system_child,(void *)&userdata);
4378 child_success = proc > 0;
4380 #ifdef HAS_SIGPROCMASK
4381 sigemptyset(&newset);
4382 sigaddset(&newset, SIGCHLD);
4383 sigprocmask(SIG_BLOCK, &newset, &oldset);
4385 while ((childpid = PerlProc_fork()) == -1) {
4386 if (errno != EAGAIN) {
4391 PerlLIO_close(pp[0]);
4392 PerlLIO_close(pp[1]);
4394 #ifdef HAS_SIGPROCMASK
4395 sigprocmask(SIG_SETMASK, &oldset, NULL);
4401 child_success = childpid > 0;
4403 if (child_success) {
4404 Sigsave_t ihand,qhand; /* place to save signals during system() */
4407 #ifndef __amigaos4__
4409 PerlLIO_close(pp[1]);
4412 rsignal_save(SIGINT, (Sighandler_t) SIG_IGN, &ihand);
4413 rsignal_save(SIGQUIT, (Sighandler_t) SIG_IGN, &qhand);
4416 result = pthread_join(proc, (void **)&status);
4419 result = wait4pid(childpid, &status, 0);
4420 } while (result == -1 && errno == EINTR);
4423 #ifdef HAS_SIGPROCMASK
4424 sigprocmask(SIG_SETMASK, &oldset, NULL);
4426 (void)rsignal_restore(SIGINT, &ihand);
4427 (void)rsignal_restore(SIGQUIT, &qhand);
4429 STATUS_NATIVE_CHILD_SET(result == -1 ? -1 : status);
4435 while (n < sizeof(int)) {
4436 const SSize_t n1 = PerlLIO_read(pp[0],
4437 (void*)(((char*)&errkid)+n),
4443 PerlLIO_close(pp[0]);
4444 if (n) { /* Error */
4445 if (n != sizeof(int))
4446 DIE(aTHX_ "panic: kid popen errno read, n=%u", n);
4447 errno = errkid; /* Propagate errno from kid */
4449 /* The pipe always has something in it
4450 * so n alone is not enough. */
4454 STATUS_NATIVE_CHILD_SET(-1);
4458 XPUSHi(STATUS_CURRENT);
4461 #ifndef __amigaos4__
4462 #ifdef HAS_SIGPROCMASK
4463 sigprocmask(SIG_SETMASK, &oldset, NULL);
4466 PerlLIO_close(pp[0]);
4467 if (PL_op->op_flags & OPf_STACKED) {
4468 SV * const really = *++MARK;
4469 value = (I32)do_aexec5(really, MARK, SP, pp[1], did_pipes);
4471 else if (SP - MARK != 1)
4472 value = (I32)do_aexec5(NULL, MARK, SP, pp[1], did_pipes);
4474 value = (I32)do_exec3(SvPVx_nolen(sv_mortalcopy(*SP)), pp[1], did_pipes);
4476 #endif /* __amigaos4__ */
4479 #else /* ! FORK or VMS or OS/2 */
4482 if (PL_op->op_flags & OPf_STACKED) {
4483 SV * const really = *++MARK;
4484 # if defined(WIN32) || defined(OS2) || defined(__VMS)
4485 value = (I32)do_aspawn(really, MARK, SP);
4487 value = (I32)do_aspawn(really, (void **)MARK, (void **)SP);
4490 else if (SP - MARK != 1) {
4491 # if defined(WIN32) || defined(OS2) || defined(__VMS)
4492 value = (I32)do_aspawn(NULL, MARK, SP);
4494 value = (I32)do_aspawn(NULL, (void **)MARK, (void **)SP);
4498 value = (I32)do_spawn(SvPVx_nolen(sv_mortalcopy(*SP)));
4500 if (PL_statusvalue == -1) /* hint that value must be returned as is */
4502 STATUS_NATIVE_CHILD_SET(value);
4504 XPUSHi(result ? value : STATUS_CURRENT);
4505 #endif /* !FORK or VMS or OS/2 */
4512 dSP; dMARK; dORIGMARK; dTARGET;
4517 while (++MARK <= SP) {
4518 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
4523 TAINT_PROPER("exec");
4526 PERL_FLUSHALL_FOR_CHILD;
4527 if (PL_op->op_flags & OPf_STACKED) {
4528 SV * const really = *++MARK;
4529 value = (I32)do_aexec(really, MARK, SP);
4531 else if (SP - MARK != 1)
4533 value = (I32)vms_do_aexec(NULL, MARK, SP);
4535 value = (I32)do_aexec(NULL, MARK, SP);
4539 value = (I32)vms_do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
4541 value = (I32)do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
4553 XPUSHi( getppid() );
4556 DIE(aTHX_ PL_no_func, "getppid");
4566 (MAXARG < 1) ? 0 : TOPs ? SvIVx(POPs) : ((void)POPs, 0);
4569 pgrp = (I32)BSD_GETPGRP(pid);
4571 if (pid != 0 && pid != PerlProc_getpid())
4572 DIE(aTHX_ "POSIX getpgrp can't take an argument");
4578 DIE(aTHX_ PL_no_func, "getpgrp");
4588 pgrp = MAXARG == 2 && (TOPs||POPs) ? POPi : 0;
4589 if (MAXARG > 0) pid = TOPs ? TOPi : 0;
4596 TAINT_PROPER("setpgrp");
4598 SETi( BSD_SETPGRP(pid, pgrp) >= 0 );
4600 if ((pgrp != 0 && pgrp != PerlProc_getpid())
4601 || (pid != 0 && pid != PerlProc_getpid()))
4603 DIE(aTHX_ "setpgrp can't take arguments");
4605 SETi( setpgrp() >= 0 );
4606 #endif /* USE_BSDPGRP */
4609 DIE(aTHX_ PL_no_func, "setpgrp");
4614 * The glibc headers typedef __priority_which_t to an enum under C, but
4615 * under C++, it keeps it as int. -Wc++-compat doesn't know this, so we
4616 * need to explicitly cast it to shut up the warning.
4618 #if defined(__GLIBC__) && ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3) || (__GLIBC__ > 2))
4619 # define PRIORITY_WHICH_T(which) (__priority_which_t)which
4621 # define PRIORITY_WHICH_T(which) which
4626 #ifdef HAS_GETPRIORITY
4628 const int who = POPi;
4629 const int which = TOPi;
4630 SETi( getpriority(PRIORITY_WHICH_T(which), who) );
4633 DIE(aTHX_ PL_no_func, "getpriority");
4639 #ifdef HAS_SETPRIORITY
4641 const int niceval = POPi;
4642 const int who = POPi;
4643 const int which = TOPi;
4644 TAINT_PROPER("setpriority");
4645 SETi( setpriority(PRIORITY_WHICH_T(which), who, niceval) >= 0 );
4648 DIE(aTHX_ PL_no_func, "setpriority");
4652 #undef PRIORITY_WHICH_T
4660 XPUSHn( (NV)time(NULL) );
4662 XPUSHu( (UV)time(NULL) );
4671 struct tms timesbuf;
4674 (void)PerlProc_times(×buf);
4676 mPUSHn(((NV)timesbuf.tms_utime)/(NV)PL_clocktick);
4677 if (GIMME_V == G_LIST) {
4678 mPUSHn(((NV)timesbuf.tms_stime)/(NV)PL_clocktick);
4679 mPUSHn(((NV)timesbuf.tms_cutime)/(NV)PL_clocktick);
4680 mPUSHn(((NV)timesbuf.tms_cstime)/(NV)PL_clocktick);
4683 #elif defined(PERL_MICRO)
4687 if (GIMME_V == G_LIST) {
4694 DIE(aTHX_ "times not implemented");
4695 #endif /* HAS_TIMES */
4698 /* The 32 bit int year limits the times we can represent to these
4699 boundaries with a few days wiggle room to account for time zone
4702 /* Sat Jan 3 00:00:00 -2147481748 */
4703 #define TIME_LOWER_BOUND -67768100567755200.0
4704 /* Sun Dec 29 12:00:00 2147483647 */
4705 #define TIME_UPPER_BOUND 67767976233316800.0
4708 /* also used for: pp_localtime() */
4716 const char *opname = PL_op->op_type == OP_LOCALTIME ? "localtime" : "gmtime";
4717 static const char * const dayname[] =
4718 {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
4719 static const char * const monname[] =
4720 {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
4721 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
4723 if (MAXARG < 1 || (!TOPs && ((void)POPs, 1))) {
4726 when = (Time64_T)now;
4729 NV input = Perl_floor(POPn);
4730 const bool pl_isnan = Perl_isnan(input);
4731 when = (Time64_T)input;
4732 if (UNLIKELY(pl_isnan || when != input)) {
4733 /* diag_listed_as: gmtime(%f) too large */
4734 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4735 "%s(%.0" NVff ") too large", opname, input);
4743 if ( TIME_LOWER_BOUND > when ) {
4744 /* diag_listed_as: gmtime(%f) too small */
4745 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4746 "%s(%.0" NVff ") too small", opname, when);
4749 else if( when > TIME_UPPER_BOUND ) {
4750 /* diag_listed_as: gmtime(%f) too small */
4751 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4752 "%s(%.0" NVff ") too large", opname, when);
4756 if (PL_op->op_type == OP_LOCALTIME)
4757 err = Perl_localtime64_r(&when, &tmbuf);
4759 err = Perl_gmtime64_r(&when, &tmbuf);
4763 /* diag_listed_as: gmtime(%f) failed */
4764 /* XXX %lld broken for quads */
4766 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
4767 "%s(%.0" NVff ") failed", opname, when);
4770 if (GIMME_V != G_LIST) { /* scalar context */
4777 Perl_sv_setpvf_mg(aTHX_ TARG, "%s %s %2d %02d:%02d:%02d %" IVdf,
4778 dayname[tmbuf.tm_wday],
4779 monname[tmbuf.tm_mon],
4784 (IV)tmbuf.tm_year + 1900);
4787 else { /* list context */
4793 mPUSHi(tmbuf.tm_sec);
4794 mPUSHi(tmbuf.tm_min);
4795 mPUSHi(tmbuf.tm_hour);
4796 mPUSHi(tmbuf.tm_mday);
4797 mPUSHi(tmbuf.tm_mon);
4798 mPUSHn(tmbuf.tm_year);
4799 mPUSHi(tmbuf.tm_wday);
4800 mPUSHi(tmbuf.tm_yday);
4801 mPUSHi(tmbuf.tm_isdst);
4810 /* alarm() takes an unsigned int number of seconds, and return the
4811 * unsigned int number of seconds remaining in the previous alarm
4812 * (alarms don't stack). Therefore negative return values are not
4816 /* Note that while the C library function alarm() as such has
4817 * no errors defined (or in other words, properly behaving client
4818 * code shouldn't expect any), alarm() being obsoleted by
4819 * setitimer() and often being implemented in terms of
4820 * setitimer(), can fail. */
4821 /* diag_listed_as: %s() with negative argument */
4822 Perl_ck_warner_d(aTHX_ packWARN(WARN_MISC),
4823 "alarm() with negative argument");
4824 SETERRNO(EINVAL, LIB_INVARG);
4828 unsigned int retval = alarm(anum);
4829 if ((int)retval < 0) /* Strictly speaking "cannot happen". */
4835 DIE(aTHX_ PL_no_func, "alarm");
4845 (void)time(&lasttime);
4846 if (MAXARG < 1 || (!TOPs && !POPs))
4849 const I32 duration = POPi;
4851 /* diag_listed_as: %s() with negative argument */
4852 Perl_ck_warner_d(aTHX_ packWARN(WARN_MISC),
4853 "sleep() with negative argument");
4854 SETERRNO(EINVAL, LIB_INVARG);
4855 XPUSHs(&PL_sv_zero);
4858 PerlProc_sleep((unsigned int)duration);
4862 XPUSHu((UV)(when - lasttime));
4866 /* Shared memory. */
4867 /* Merged with some message passing. */
4869 /* also used for: pp_msgrcv() pp_msgsnd() pp_semop() pp_shmread() */
4873 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4874 dSP; dMARK; dTARGET;
4875 const int op_type = PL_op->op_type;
4880 value = (I32)(do_msgsnd(MARK, SP) >= 0);
4883 value = (I32)(do_msgrcv(MARK, SP) >= 0);
4886 value = (I32)(do_semop(MARK, SP) >= 0);
4889 value = (I32)(do_shmio(op_type, MARK, SP) >= 0);
4897 return Perl_pp_semget(aTHX);
4903 /* also used for: pp_msgget() pp_shmget() */
4907 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4908 dSP; dMARK; dTARGET;
4909 const int anum = do_ipcget(PL_op->op_type, MARK, SP);
4916 DIE(aTHX_ "System V IPC is not implemented on this machine");
4920 /* also used for: pp_msgctl() pp_shmctl() */
4924 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4925 dSP; dMARK; dTARGET;
4926 const int anum = do_ipcctl(PL_op->op_type, MARK, SP);
4934 PUSHp(zero_but_true, ZBTLEN);
4938 return Perl_pp_semget(aTHX);
4942 /* I can't const this further without getting warnings about the types of
4943 various arrays passed in from structures. */
4945 S_space_join_names_mortal(pTHX_ char *const *array)
4949 if (array && *array) {
4950 target = newSVpvs_flags("", SVs_TEMP);
4952 sv_catpv(target, *array);
4955 sv_catpvs(target, " ");
4958 target = sv_mortalcopy(&PL_sv_no);
4963 /* Get system info. */
4965 /* also used for: pp_ghbyaddr() pp_ghbyname() */
4969 #if defined(HAS_GETHOSTBYNAME) || defined(HAS_GETHOSTBYADDR) || defined(HAS_GETHOSTENT)
4971 I32 which = PL_op->op_type;
4974 #ifndef HAS_GETHOST_PROTOS /* XXX Do we need individual probes? */
4975 struct hostent *gethostbyaddr(Netdb_host_t, Netdb_hlen_t, int);
4976 struct hostent *gethostbyname(Netdb_name_t);
4977 struct hostent *gethostent(void);
4979 struct hostent *hent = NULL;
4983 if (which == OP_GHBYNAME) {
4984 #ifdef HAS_GETHOSTBYNAME
4985 const char* const name = POPpbytex;
4986 hent = PerlSock_gethostbyname(name);
4988 DIE(aTHX_ PL_no_sock_func, "gethostbyname");
4991 else if (which == OP_GHBYADDR) {
4992 #ifdef HAS_GETHOSTBYADDR
4993 const int addrtype = POPi;
4994 SV * const addrsv = POPs;
4996 const char *addr = (char *)SvPVbyte(addrsv, addrlen);
4998 hent = PerlSock_gethostbyaddr(addr, (Netdb_hlen_t) addrlen, addrtype);
5000 DIE(aTHX_ PL_no_sock_func, "gethostbyaddr");
5004 #ifdef HAS_GETHOSTENT
5005 hent = PerlSock_gethostent();
5007 DIE(aTHX_ PL_no_sock_func, "gethostent");
5010 #ifdef HOST_NOT_FOUND
5012 #ifdef USE_REENTRANT_API
5013 # ifdef USE_GETHOSTENT_ERRNO
5014 h_errno = PL_reentrant_buffer->_gethostent_errno;
5017 STATUS_UNIX_SET(h_errno);
5021 if (GIMME_V != G_LIST) {
5022 PUSHs(sv = sv_newmortal());
5024 if (which == OP_GHBYNAME) {
5026 sv_setpvn(sv, hent->h_addr, hent->h_length);
5029 sv_setpv(sv, (char*)hent->h_name);
5035 mPUSHs(newSVpv((char*)hent->h_name, 0));
5036 PUSHs(space_join_names_mortal(hent->h_aliases));
5037 mPUSHi(hent->h_addrtype);
5038 len = hent->h_length;
5041 for (elem = hent->h_addr_list; elem && *elem; elem++) {
5042 mXPUSHp(*elem, len);
5046 mPUSHp(hent->h_addr, len);
5048 PUSHs(sv_mortalcopy(&PL_sv_no));
5053 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5057 /* also used for: pp_gnbyaddr() pp_gnbyname() */
5061 #if defined(HAS_GETNETBYNAME) || defined(HAS_GETNETBYADDR) || defined(HAS_GETNETENT)
5063 I32 which = PL_op->op_type;
5065 #ifndef HAS_GETNET_PROTOS /* XXX Do we need individual probes? */
5066 struct netent *getnetbyaddr(Netdb_net_t, int);
5067 struct netent *getnetbyname(Netdb_name_t);
5068 struct netent *getnetent(void);
5070 struct netent *nent;
5072 if (which == OP_GNBYNAME){
5073 #ifdef HAS_GETNETBYNAME
5074 const char * const name = POPpbytex;
5075 nent = PerlSock_getnetbyname(name);
5077 DIE(aTHX_ PL_no_sock_func, "getnetbyname");
5080 else if (which == OP_GNBYADDR) {
5081 #ifdef HAS_GETNETBYADDR
5082 const int addrtype = POPi;
5083 const Netdb_net_t addr = (Netdb_net_t) (U32)POPu;
5084 nent = PerlSock_getnetbyaddr(addr, addrtype);
5086 DIE(aTHX_ PL_no_sock_func, "getnetbyaddr");
5090 #ifdef HAS_GETNETENT
5091 nent = PerlSock_getnetent();
5093 DIE(aTHX_ PL_no_sock_func, "getnetent");
5096 #ifdef HOST_NOT_FOUND
5098 #ifdef USE_REENTRANT_API
5099 # ifdef USE_GETNETENT_ERRNO
5100 h_errno = PL_reentrant_buffer->_getnetent_errno;
5103 STATUS_UNIX_SET(h_errno);
5108 if (GIMME_V != G_LIST) {
5109 PUSHs(sv = sv_newmortal());
5111 if (which == OP_GNBYNAME)
5112 sv_setiv(sv, (IV)nent->n_net);
5114 sv_setpv(sv, nent->n_name);
5120 mPUSHs(newSVpv(nent->n_name, 0));
5121 PUSHs(space_join_names_mortal(nent->n_aliases));
5122 mPUSHi(nent->n_addrtype);
5123 mPUSHi(nent->n_net);
5128 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5133 /* also used for: pp_gpbyname() pp_gpbynumber() */
5137 #if defined(HAS_GETPROTOBYNAME) || defined(HAS_GETPROTOBYNUMBER) || defined(HAS_GETPROTOENT)
5139 I32 which = PL_op->op_type;
5141 #ifndef HAS_GETPROTO_PROTOS /* XXX Do we need individual probes? */
5142 struct protoent *getprotobyname(Netdb_name_t);
5143 struct protoent *getprotobynumber(int);
5144 struct protoent *getprotoent(void);
5146 struct protoent *pent;
5148 if (which == OP_GPBYNAME) {
5149 #ifdef HAS_GETPROTOBYNAME
5150 const char* const name = POPpbytex;
5151 pent = PerlSock_getprotobyname(name);
5153 DIE(aTHX_ PL_no_sock_func, "getprotobyname");
5156 else if (which == OP_GPBYNUMBER) {
5157 #ifdef HAS_GETPROTOBYNUMBER
5158 const int number = POPi;
5159 pent = PerlSock_getprotobynumber(number);
5161 DIE(aTHX_ PL_no_sock_func, "getprotobynumber");
5165 #ifdef HAS_GETPROTOENT
5166 pent = PerlSock_getprotoent();
5168 DIE(aTHX_ PL_no_sock_func, "getprotoent");
5172 if (GIMME_V != G_LIST) {
5173 PUSHs(sv = sv_newmortal());
5175 if (which == OP_GPBYNAME)
5176 sv_setiv(sv, (IV)pent->p_proto);
5178 sv_setpv(sv, pent->p_name);
5184 mPUSHs(newSVpv(pent->p_name, 0));
5185 PUSHs(space_join_names_mortal(pent->p_aliases));
5186 mPUSHi(pent->p_proto);
5191 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5196 /* also used for: pp_gsbyname() pp_gsbyport() */
5200 #if defined(HAS_GETSERVBYNAME) || defined(HAS_GETSERVBYPORT) || defined(HAS_GETSERVENT)
5202 I32 which = PL_op->op_type;
5204 #ifndef HAS_GETSERV_PROTOS /* XXX Do we need individual probes? */
5205 struct servent *getservbyname(Netdb_name_t, Netdb_name_t);
5206 struct servent *getservbyport(int, Netdb_name_t);
5207 struct servent *getservent(void);
5209 struct servent *sent;
5211 if (which == OP_GSBYNAME) {
5212 #ifdef HAS_GETSERVBYNAME
5213 const char * const proto = POPpbytex;
5214 const char * const name = POPpbytex;
5215 sent = PerlSock_getservbyname(name, (proto && !*proto) ? NULL : proto);
5217 DIE(aTHX_ PL_no_sock_func, "getservbyname");
5220 else if (which == OP_GSBYPORT) {
5221 #ifdef HAS_GETSERVBYPORT
5222 const char * const proto = POPpbytex;
5223 unsigned short port = (unsigned short)POPu;
5224 port = PerlSock_htons(port);
5225 sent = PerlSock_getservbyport(port, (proto && !*proto) ? NULL : proto);
5227 DIE(aTHX_ PL_no_sock_func, "getservbyport");
5231 #ifdef HAS_GETSERVENT
5232 sent = PerlSock_getservent();
5234 DIE(aTHX_ PL_no_sock_func, "getservent");
5238 if (GIMME_V != G_LIST) {
5239 PUSHs(sv = sv_newmortal());
5241 if (which == OP_GSBYNAME) {
5242 sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
5245 sv_setpv(sv, sent->s_name);
5251 mPUSHs(newSVpv(sent->s_name, 0));
5252 PUSHs(space_join_names_mortal(sent->s_aliases));
5253 mPUSHi(PerlSock_ntohs(sent->s_port));
5254 mPUSHs(newSVpv(sent->s_proto, 0));
5259 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5264 /* also used for: pp_snetent() pp_sprotoent() pp_sservent() */
5269 const int stayopen = TOPi;
5270 switch(PL_op->op_type) {
5272 #ifdef HAS_SETHOSTENT
5273 PerlSock_sethostent(stayopen);
5275 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5279 #ifdef HAS_SETNETENT
5280 PerlSock_setnetent(stayopen);
5282 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5286 #ifdef HAS_SETPROTOENT
5287 PerlSock_setprotoent(stayopen);
5289 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5293 #ifdef HAS_SETSERVENT
5294 PerlSock_setservent(stayopen);
5296 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5304 /* also used for: pp_egrent() pp_enetent() pp_eprotoent() pp_epwent()
5305 * pp_eservent() pp_sgrent() pp_spwent() */
5310 switch(PL_op->op_type) {
5312 #ifdef HAS_ENDHOSTENT
5313 PerlSock_endhostent();
5315 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5319 #ifdef HAS_ENDNETENT
5320 PerlSock_endnetent();
5322 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5326 #ifdef HAS_ENDPROTOENT
5327 PerlSock_endprotoent();
5329 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5333 #ifdef HAS_ENDSERVENT
5334 PerlSock_endservent();
5336 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
5340 #if defined(HAS_GROUP) && defined(HAS_SETGRENT)
5343 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5347 #if defined(HAS_GROUP) && defined(HAS_ENDGRENT)
5350 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5354 #if defined(HAS_PASSWD) && defined(HAS_SETPWENT)
5357 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5361 #if defined(HAS_PASSWD) && defined(HAS_ENDPWENT)
5364 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5373 /* also used for: pp_gpwnam() pp_gpwuid() */
5379 I32 which = PL_op->op_type;
5381 struct passwd *pwent = NULL;
5383 * We currently support only the SysV getsp* shadow password interface.
5384 * The interface is declared in <shadow.h> and often one needs to link
5385 * with -lsecurity or some such.
5386 * This interface is used at least by Solaris, HP-UX, IRIX, and Linux.
5389 * AIX getpwnam() is clever enough to return the encrypted password
5390 * only if the caller (euid?) is root.
5392 * There are at least three other shadow password APIs. Many platforms
5393 * seem to contain more than one interface for accessing the shadow
5394 * password databases, possibly for compatibility reasons.
5395 * The getsp*() is by far he simplest one, the other two interfaces
5396 * are much more complicated, but also very similar to each other.
5401 * struct pr_passwd *getprpw*();
5402 * The password is in
5403 * char getprpw*(...).ufld.fd_encrypt[]
5404 * Mention HAS_GETPRPWNAM here so that Configure probes for it.
5409 * struct es_passwd *getespw*();
5410 * The password is in
5411 * char *(getespw*(...).ufld.fd_encrypt)
5412 * Mention HAS_GETESPWNAM here so that Configure probes for it.
5415 * struct userpw *getuserpw();
5416 * The password is in
5417 * char *(getuserpw(...)).spw_upw_passwd
5418 * (but the de facto standard getpwnam() should work okay)
5420 * Mention I_PROT here so that Configure probes for it.
5422 * In HP-UX for getprpw*() the manual page claims that one should include
5423 * <hpsecurity.h> instead of <sys/security.h>, but that is not needed
5424 * if one includes <shadow.h> as that includes <hpsecurity.h>,
5425 * and pp_sys.c already includes <shadow.h> if there is such.
5427 * Note that <sys/security.h> is already probed for, but currently
5428 * it is only included in special cases.
5430 * In Digital UNIX/Tru64 if using the getespw*() (which seems to be
5431 * the preferred interface, even though also the getprpw*() interface
5432 * is available) one needs to link with -lsecurity -ldb -laud -lm.
5433 * One also needs to call set_auth_parameters() in main() before
5434 * doing anything else, whether one is using getespw*() or getprpw*().
5436 * Note that accessing the shadow databases can be magnitudes
5437 * slower than accessing the standard databases.
5442 # if defined(__CYGWIN__) && defined(USE_REENTRANT_API)
5443 /* Cygwin 1.5.3-1 has buggy getpwnam_r() and getpwuid_r():
5444 * the pw_comment is left uninitialized. */
5445 PL_reentrant_buffer->_pwent_struct.pw_comment = NULL;
5451 const char* const name = POPpbytex;
5452 pwent = getpwnam(name);
5458 pwent = getpwuid(uid);
5462 # ifdef HAS_GETPWENT
5464 #ifdef POSIX_BC /* In some cases pw_passwd has invalid addresses */
5465 if (pwent) pwent = getpwnam(pwent->pw_name);
5468 DIE(aTHX_ PL_no_func, "getpwent");
5474 if (GIMME_V != G_LIST) {
5475 PUSHs(sv = sv_newmortal());
5477 if (which == OP_GPWNAM)
5478 sv_setuid(sv, pwent->pw_uid);
5480 sv_setpv(sv, pwent->pw_name);
5486 mPUSHs(newSVpv(pwent->pw_name, 0));
5490 /* If we have getspnam(), we try to dig up the shadow
5491 * password. If we are underprivileged, the shadow
5492 * interface will set the errno to EACCES or similar,
5493 * and return a null pointer. If this happens, we will
5494 * use the dummy password (usually "*" or "x") from the
5495 * standard password database.
5497 * In theory we could skip the shadow call completely
5498 * if euid != 0 but in practice we cannot know which
5499 * security measures are guarding the shadow databases
5500 * on a random platform.
5502 * Resist the urge to use additional shadow interfaces.
5503 * Divert the urge to writing an extension instead.
5506 /* Some AIX setups falsely(?) detect some getspnam(), which
5507 * has a different API than the Solaris/IRIX one. */
5508 # if defined(HAS_GETSPNAM) && !defined(_AIX)
5511 const struct spwd * const spwent = getspnam(pwent->pw_name);
5512 /* Save and restore errno so that
5513 * underprivileged attempts seem
5514 * to have never made the unsuccessful
5515 * attempt to retrieve the shadow password. */
5517 if (spwent && spwent->sp_pwdp)
5518 sv_setpv(sv, spwent->sp_pwdp);
5522 if (!SvPOK(sv)) /* Use the standard password, then. */
5523 sv_setpv(sv, pwent->pw_passwd);
5526 /* passwd is tainted because user himself can diddle with it.
5527 * admittedly not much and in a very limited way, but nevertheless. */
5530 sv_setuid(PUSHmortal, pwent->pw_uid);
5531 sv_setgid(PUSHmortal, pwent->pw_gid);
5533 /* pw_change, pw_quota, and pw_age are mutually exclusive--
5534 * because of the poor interface of the Perl getpw*(),
5535 * not because there's some standard/convention saying so.
5536 * A better interface would have been to return a hash,
5537 * but we are accursed by our history, alas. --jhi. */
5539 mPUSHi(pwent->pw_change);
5540 # elif defined(PWQUOTA)
5541 mPUSHi(pwent->pw_quota);
5542 # elif defined(PWAGE)
5543 mPUSHs(newSVpv(pwent->pw_age, 0));
5545 /* I think that you can never get this compiled, but just in case. */
5546 PUSHs(sv_mortalcopy(&PL_sv_no));
5549 /* pw_class and pw_comment are mutually exclusive--.
5550 * see the above note for pw_change, pw_quota, and pw_age. */
5552 mPUSHs(newSVpv(pwent->pw_class, 0));
5553 # elif defined(PWCOMMENT)
5554 mPUSHs(newSVpv(pwent->pw_comment, 0));
5556 /* I think that you can never get this compiled, but just in case. */
5557 PUSHs(sv_mortalcopy(&PL_sv_no));
5561 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_gecos, 0)));
5563 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5565 /* pw_gecos is tainted because user himself can diddle with it. */
5568 mPUSHs(newSVpv(pwent->pw_dir, 0));
5570 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_shell, 0)));
5571 /* pw_shell is tainted because user himself can diddle with it. */
5575 mPUSHi(pwent->pw_expire);
5580 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5585 /* also used for: pp_ggrgid() pp_ggrnam() */
5591 const I32 which = PL_op->op_type;
5592 const struct group *grent;
5594 if (which == OP_GGRNAM) {
5595 const char* const name = POPpbytex;
5596 grent = (const struct group *)getgrnam(name);
5598 else if (which == OP_GGRGID) {
5600 const Gid_t gid = POPu;
5601 #elif Gid_t_sign == -1
5602 const Gid_t gid = POPi;
5604 # error "Unexpected Gid_t_sign"
5606 grent = (const struct group *)getgrgid(gid);
5610 grent = (struct group *)getgrent();
5612 DIE(aTHX_ PL_no_func, "getgrent");
5616 if (GIMME_V != G_LIST) {
5617 SV * const sv = sv_newmortal();
5621 if (which == OP_GGRNAM)
5622 sv_setgid(sv, grent->gr_gid);
5624 sv_setpv(sv, grent->gr_name);
5630 mPUSHs(newSVpv(grent->gr_name, 0));
5633 mPUSHs(newSVpv(grent->gr_passwd, 0));
5635 PUSHs(sv_mortalcopy(&PL_sv_no));
5638 sv_setgid(PUSHmortal, grent->gr_gid);
5640 #if !(defined(_CRAYMPP) && defined(USE_REENTRANT_API))
5641 /* In UNICOS/mk (_CRAYMPP) the multithreading
5642 * versions (getgrnam_r, getgrgid_r)
5643 * seem to return an illegal pointer
5644 * as the group members list, gr_mem.
5645 * getgrent() doesn't even have a _r version
5646 * but the gr_mem is poisonous anyway.
5647 * So yes, you cannot get the list of group
5648 * members if building multithreaded in UNICOS/mk. */
5649 PUSHs(space_join_names_mortal(grent->gr_mem));
5655 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5665 if (!(tmps = PerlProc_getlogin()))
5667 sv_setpv_mg(TARG, tmps);
5671 DIE(aTHX_ PL_no_func, "getlogin");
5675 /* Miscellaneous. */
5680 dSP; dMARK; dORIGMARK; dTARGET;
5681 I32 items = SP - MARK;
5682 unsigned long a[20];
5687 while (++MARK <= SP) {
5688 if (SvTAINTED(*MARK)) {
5694 TAINT_PROPER("syscall");
5697 /* This probably won't work on machines where sizeof(long) != sizeof(int)
5698 * or where sizeof(long) != sizeof(char*). But such machines will
5699 * not likely have syscall implemented either, so who cares?
5701 while (++MARK <= SP) {
5702 if (SvNIOK(*MARK) || !i)
5703 a[i++] = SvIV(*MARK);
5704 else if (*MARK == &PL_sv_undef)
5707 a[i++] = (unsigned long)SvPV_force_nolen(*MARK);
5713 DIE(aTHX_ "Too many args to syscall");
5715 DIE(aTHX_ "Too few args to syscall");
5717 retval = syscall(a[0]);
5720 retval = syscall(a[0],a[1]);
5723 retval = syscall(a[0],a[1],a[2]);
5726 retval = syscall(a[0],a[1],a[2],a[3]);
5729 retval = syscall(a[0],a[1],a[2],a[3],a[4]);
5732 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5]);
5735 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6]);
5738 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7]);
5745 DIE(aTHX_ PL_no_func, "syscall");
5749 #ifdef FCNTL_EMULATE_FLOCK
5751 /* XXX Emulate flock() with fcntl().
5752 What's really needed is a good file locking module.
5756 fcntl_emulate_flock(int fd, int operation)
5761 switch (operation & ~LOCK_NB) {
5763 flock.l_type = F_RDLCK;
5766 flock.l_type = F_WRLCK;
5769 flock.l_type = F_UNLCK;
5775 flock.l_whence = SEEK_SET;
5776 flock.l_start = flock.l_len = (Off_t)0;
5778 res = fcntl(fd, (operation & LOCK_NB) ? F_SETLK : F_SETLKW, &flock);
5779 if (res == -1 && ((errno == EAGAIN) || (errno == EACCES)))
5780 errno = EWOULDBLOCK;
5784 #endif /* FCNTL_EMULATE_FLOCK */
5786 #ifdef LOCKF_EMULATE_FLOCK
5788 /* XXX Emulate flock() with lockf(). This is just to increase
5789 portability of scripts. The calls are not completely
5790 interchangeable. What's really needed is a good file
5794 /* The lockf() constants might have been defined in <unistd.h>.
5795 Unfortunately, <unistd.h> causes troubles on some mixed
5796 (BSD/POSIX) systems, such as SunOS 4.1.3.
5798 Further, the lockf() constants aren't POSIX, so they might not be
5799 visible if we're compiling with _POSIX_SOURCE defined. Thus, we'll
5800 just stick in the SVID values and be done with it. Sigh.
5804 # define F_ULOCK 0 /* Unlock a previously locked region */
5807 # define F_LOCK 1 /* Lock a region for exclusive use */
5810 # define F_TLOCK 2 /* Test and lock a region for exclusive use */
5813 # define F_TEST 3 /* Test a region for other processes locks */
5817 lockf_emulate_flock(int fd, int operation)
5823 /* flock locks entire file so for lockf we need to do the same */
5824 pos = PerlLIO_lseek(fd, (Off_t)0, SEEK_CUR); /* get pos to restore later */
5825 if (pos > 0) /* is seekable and needs to be repositioned */
5826 if (PerlLIO_lseek(fd, (Off_t)0, SEEK_SET) < 0)
5827 pos = -1; /* seek failed, so don't seek back afterwards */
5830 switch (operation) {
5832 /* LOCK_SH - get a shared lock */
5834 /* LOCK_EX - get an exclusive lock */
5836 i = lockf (fd, F_LOCK, 0);
5839 /* LOCK_SH|LOCK_NB - get a non-blocking shared lock */
5840 case LOCK_SH|LOCK_NB:
5841 /* LOCK_EX|LOCK_NB - get a non-blocking exclusive lock */
5842 case LOCK_EX|LOCK_NB:
5843 i = lockf (fd, F_TLOCK, 0);
5845 if ((errno == EAGAIN) || (errno == EACCES))
5846 errno = EWOULDBLOCK;
5849 /* LOCK_UN - unlock (non-blocking is a no-op) */
5851 case LOCK_UN|LOCK_NB:
5852 i = lockf (fd, F_ULOCK, 0);
5855 /* Default - can't decipher operation */
5862 if (pos > 0) /* need to restore position of the handle */
5863 PerlLIO_lseek(fd, pos, SEEK_SET); /* ignore error here */
5868 #endif /* LOCKF_EMULATE_FLOCK */
5871 * ex: set ts=8 sts=4 sw=4 et: