3 * Copyright (C) 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2003, 2004, 2005, 2006, 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.
18 /* This file contains system pp ("push/pop") functions that
19 * execute the opcodes that make up a perl program. A typical pp function
20 * expects to find its arguments on the stack, and usually pushes its
21 * results onto the stack, hence the 'pp' terminology. Each OP structure
22 * contains a pointer to the relevant pp_foo() function.
24 * By 'system', we mean ops which interact with the OS, such as pp_open().
28 #define PERL_IN_PP_SYS_C
32 /* Shadow password support for solaris - pdo@cs.umd.edu
33 * Not just Solaris: at least HP-UX, IRIX, Linux.
34 * The API is from SysV.
36 * There are at least two more shadow interfaces,
37 * see the comments in pp_gpwent().
41 /* There is a MAXINT coming from <shadow.h> <- <hpsecurity.h> <- <values.h>
42 * and another MAXINT from "perl.h" <- <sys/param.h>. */
49 # include <sys/wait.h>
53 # include <sys/resource.h>
62 # include <sys/select.h>
66 /* XXX Configure test needed.
67 h_errno might not be a simple 'int', especially for multi-threaded
68 applications, see "extern int errno in perl.h". Creating such
69 a test requires taking into account the differences between
70 compiling multithreaded and singlethreaded ($ccflags et al).
71 HOST_NOT_FOUND is typically defined in <netdb.h>.
73 #if defined(HOST_NOT_FOUND) && !defined(h_errno) && !defined(__CYGWIN__)
82 struct passwd *getpwnam (char *);
83 struct passwd *getpwuid (Uid_t);
88 struct passwd *getpwent (void);
89 #elif defined (VMS) && defined (my_getpwent)
90 struct passwd *Perl_my_getpwent (pTHX);
99 struct group *getgrnam (char *);
100 struct group *getgrgid (Gid_t);
104 struct group *getgrent (void);
110 # if defined(_MSC_VER) || defined(__MINGW32__)
111 # include <sys/utime.h>
118 # ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
121 # define my_chsize PerlLIO_chsize
124 # define my_chsize PerlLIO_chsize
126 I32 my_chsize(int fd, Off_t length);
132 #else /* no flock() */
134 /* fcntl.h might not have been included, even if it exists, because
135 the current Configure only sets I_FCNTL if it's needed to pick up
136 the *_OK constants. Make sure it has been included before testing
137 the fcntl() locking constants. */
138 # if defined(HAS_FCNTL) && !defined(I_FCNTL)
142 # if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
143 # define FLOCK fcntl_emulate_flock
144 # define FCNTL_EMULATE_FLOCK
145 # else /* no flock() or fcntl(F_SETLK,...) */
147 # define FLOCK lockf_emulate_flock
148 # define LOCKF_EMULATE_FLOCK
150 # endif /* no flock() or fcntl(F_SETLK,...) */
153 static int FLOCK (int, int);
156 * These are the flock() constants. Since this sytems doesn't have
157 * flock(), the values of the constants are probably not available.
171 # endif /* emulating flock() */
173 #endif /* no flock() */
176 static const char zero_but_true[ZBTLEN + 1] = "0 but true";
178 #if defined(I_SYS_ACCESS) && !defined(R_OK)
179 # include <sys/access.h>
182 #if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
183 # define FD_CLOEXEC 1 /* NeXT needs this */
189 /* Missing protos on LynxOS */
190 void sethostent(int);
191 void endhostent(void);
193 void endnetent(void);
194 void setprotoent(int);
195 void endprotoent(void);
196 void setservent(int);
197 void endservent(void);
200 #undef PERL_EFF_ACCESS /* EFFective uid/gid ACCESS */
202 /* AIX 5.2 and below use mktime for localtime, and defines the edge case
203 * for time 0x7fffffff to be valid only in UTC. AIX 5.3 provides localtime64
204 * available in the 32bit environment, which could warrant Configure
205 * checks in the future.
208 #define LOCALTIME_EDGECASE_BROKEN
211 /* F_OK unused: if stat() cannot find it... */
213 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
214 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
215 # define PERL_EFF_ACCESS(p,f) (access((p), (f) | EFF_ONLY_OK))
218 #if !defined(PERL_EFF_ACCESS) && defined(HAS_EACCESS)
219 # ifdef I_SYS_SECURITY
220 # include <sys/security.h>
224 # define PERL_EFF_ACCESS(p,f) (eaccess((p), (f), ACC_SELF))
227 # define PERL_EFF_ACCESS(p,f) (eaccess((p), (f)))
231 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESSX) && defined(ACC_SELF)
233 # define PERL_EFF_ACCESS(p,f) (accessx((p), (f), ACC_SELF))
237 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) \
238 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
239 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
242 S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
244 const Uid_t ruid = getuid();
245 const Uid_t euid = geteuid();
246 const Gid_t rgid = getgid();
247 const Gid_t egid = getegid();
251 #if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
252 Perl_croak(aTHX_ "switching effective uid is not implemented");
255 if (setreuid(euid, ruid))
258 if (setresuid(euid, ruid, (Uid_t)-1))
261 Perl_croak(aTHX_ "entering effective uid failed");
264 #if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
265 Perl_croak(aTHX_ "switching effective gid is not implemented");
268 if (setregid(egid, rgid))
271 if (setresgid(egid, rgid, (Gid_t)-1))
274 Perl_croak(aTHX_ "entering effective gid failed");
277 res = access(path, mode);
280 if (setreuid(ruid, euid))
283 if (setresuid(ruid, euid, (Uid_t)-1))
286 Perl_croak(aTHX_ "leaving effective uid failed");
289 if (setregid(rgid, egid))
292 if (setresgid(rgid, egid, (Gid_t)-1))
295 Perl_croak(aTHX_ "leaving effective gid failed");
300 # define PERL_EFF_ACCESS(p,f) (emulate_eaccess((p), (f)))
303 #if !defined(PERL_EFF_ACCESS)
304 /* With it or without it: anyway you get a warning: either that
305 it is unused, or it is declared static and never defined.
308 S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
310 PERL_UNUSED_ARG(path);
311 PERL_UNUSED_ARG(mode);
312 Perl_croak(aTHX_ "switching effective uid is not implemented");
322 const char * const tmps = POPpconstx;
323 const I32 gimme = GIMME_V;
324 const char *mode = "r";
327 if (PL_op->op_private & OPpOPEN_IN_RAW)
329 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
331 fp = PerlProc_popen(tmps, mode);
333 const char * const type = Perl_PerlIO_context_layers(aTHX_ NULL);
335 PerlIO_apply_layers(aTHX_ fp,mode,type);
337 if (gimme == G_VOID) {
339 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
342 else if (gimme == G_SCALAR) {
345 PL_rs = &PL_sv_undef;
346 sv_setpvn(TARG, "", 0); /* note that this preserves previous buffer */
347 while (sv_gets(TARG, fp, SvCUR(TARG)) != NULL)
355 SV * const sv = newSV(79);
356 if (sv_gets(sv, fp, 0) == NULL) {
360 XPUSHs(sv_2mortal(sv));
361 if (SvLEN(sv) - SvCUR(sv) > 20) {
362 SvPV_shrink_to_cur(sv);
367 STATUS_NATIVE_CHILD_SET(PerlProc_pclose(fp));
368 TAINT; /* "I believe that this is not gratuitous!" */
371 STATUS_NATIVE_CHILD_SET(-1);
372 if (gimme == G_SCALAR)
383 tryAMAGICunTARGET(iter, -1);
385 /* Note that we only ever get here if File::Glob fails to load
386 * without at the same time croaking, for some reason, or if
387 * perl was built with PERL_EXTERNAL_GLOB */
394 * The external globbing program may use things we can't control,
395 * so for security reasons we must assume the worst.
398 taint_proper(PL_no_security, "glob");
402 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
403 PL_last_in_gv = (GV*)*PL_stack_sp--;
405 SAVESPTR(PL_rs); /* This is not permanent, either. */
406 PL_rs = sv_2mortal(newSVpvs("\000"));
409 *SvPVX(PL_rs) = '\n';
413 result = do_readline();
421 PL_last_in_gv = cGVOP_gv;
422 return do_readline();
433 do_join(TARG, &PL_sv_no, MARK, SP);
437 else if (SP == MARK) {
444 tmps = SvPV_const(tmpsv, len);
445 if ((!tmps || !len) && PL_errgv) {
446 SV * const error = ERRSV;
447 SvUPGRADE(error, SVt_PV);
448 if (SvPOK(error) && SvCUR(error))
449 sv_catpvs(error, "\t...caught");
451 tmps = SvPV_const(tmpsv, len);
454 tmpsv = sv_2mortal(newSVpvs("Warning: something's wrong"));
456 Perl_warn(aTHX_ "%"SVf, (void*)tmpsv);
468 VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
470 if (SP - MARK != 1) {
472 do_join(TARG, &PL_sv_no, MARK, SP);
474 tmps = SvPV_const(tmpsv, len);
480 tmps = SvROK(tmpsv) ? NULL : SvPV_const(tmpsv, len);
483 SV * const error = ERRSV;
484 SvUPGRADE(error, SVt_PV);
485 if (multiarg ? SvROK(error) : SvROK(tmpsv)) {
487 SvSetSV(error,tmpsv);
488 else if (sv_isobject(error)) {
489 HV * const stash = SvSTASH(SvRV(error));
490 GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
492 SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
493 SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
500 call_sv((SV*)GvCV(gv),
501 G_SCALAR|G_EVAL|G_KEEPERR);
502 sv_setsv(error,*PL_stack_sp--);
508 if (SvPOK(error) && SvCUR(error))
509 sv_catpvs(error, "\t...propagated");
512 tmps = SvPV_const(tmpsv, len);
518 tmpsv = sv_2mortal(newSVpvs("Died"));
520 DIE(aTHX_ "%"SVf, (void*)tmpsv);
536 GV * const gv = (GV *)*++MARK;
539 DIE(aTHX_ PL_no_usym, "filehandle");
540 if ((io = GvIOp(gv))) {
542 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
544 mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
546 /* Method's args are same as ours ... */
547 /* ... except handle is replaced by the object */
548 *MARK-- = SvTIED_obj((SV*)io, mg);
552 call_method("OPEN", G_SCALAR);
566 tmps = SvPV_const(sv, len);
567 ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, NULL, MARK+1, (SP-MARK));
570 PUSHi( (I32)PL_forkprocess );
571 else if (PL_forkprocess == 0) /* we are a new child */
581 GV * const gv = (MAXARG == 0) ? PL_defoutgv : (GV*)POPs;
584 IO * const io = GvIO(gv);
586 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
589 XPUSHs(SvTIED_obj((SV*)io, mg));
592 call_method("CLOSE", G_SCALAR);
600 PUSHs(boolSV(do_close(gv, TRUE)));
613 GV * const wgv = (GV*)POPs;
614 GV * const rgv = (GV*)POPs;
619 if (SvTYPE(rgv) != SVt_PVGV || SvTYPE(wgv) != SVt_PVGV)
620 DIE(aTHX_ PL_no_usym, "filehandle");
625 do_close(rgv, FALSE);
627 do_close(wgv, FALSE);
629 if (PerlProc_pipe(fd) < 0)
632 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
633 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
634 IoOFP(rstio) = IoIFP(rstio);
635 IoIFP(wstio) = IoOFP(wstio);
636 IoTYPE(rstio) = IoTYPE_RDONLY;
637 IoTYPE(wstio) = IoTYPE_WRONLY;
639 if (!IoIFP(rstio) || !IoOFP(wstio)) {
641 PerlIO_close(IoIFP(rstio));
643 PerlLIO_close(fd[0]);
645 PerlIO_close(IoOFP(wstio));
647 PerlLIO_close(fd[1]);
650 #if defined(HAS_FCNTL) && defined(F_SETFD)
651 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
652 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
659 DIE(aTHX_ PL_no_func, "pipe");
675 if (gv && (io = GvIO(gv))
676 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
679 XPUSHs(SvTIED_obj((SV*)io, mg));
682 call_method("FILENO", G_SCALAR);
688 if (!gv || !(io = GvIO(gv)) || !(fp = IoIFP(io))) {
689 /* Can't do this because people seem to do things like
690 defined(fileno($foo)) to check whether $foo is a valid fh.
691 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
692 report_evil_fh(gv, io, PL_op->op_type);
697 PUSHi(PerlIO_fileno(fp));
710 anum = PerlLIO_umask(0);
711 (void)PerlLIO_umask(anum);
714 anum = PerlLIO_umask(POPi);
715 TAINT_PROPER("umask");
718 /* Only DIE if trying to restrict permissions on "user" (self).
719 * Otherwise it's harmless and more useful to just return undef
720 * since 'group' and 'other' concepts probably don't exist here. */
721 if (MAXARG >= 1 && (POPi & 0700))
722 DIE(aTHX_ "umask not implemented");
723 XPUSHs(&PL_sv_undef);
744 if (gv && (io = GvIO(gv))) {
745 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
748 XPUSHs(SvTIED_obj((SV*)io, mg));
753 call_method("BINMODE", G_SCALAR);
761 if (!(io = GvIO(gv)) || !(fp = IoIFP(io))) {
762 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
763 report_evil_fh(gv, io, PL_op->op_type);
764 SETERRNO(EBADF,RMS_IFI);
769 if (PerlIO_binmode(aTHX_ fp,IoTYPE(io),mode_from_discipline(discp),
770 (discp) ? SvPV_nolen_const(discp) : NULL)) {
771 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
772 if (!PerlIO_binmode(aTHX_ IoOFP(io),IoTYPE(io),
773 mode_from_discipline(discp),
774 (discp) ? SvPV_nolen_const(discp) : NULL)) {
794 const I32 markoff = MARK - PL_stack_base;
795 const char *methname;
796 int how = PERL_MAGIC_tied;
800 switch(SvTYPE(varsv)) {
802 methname = "TIEHASH";
803 HvEITER_set((HV *)varsv, 0);
806 methname = "TIEARRAY";
809 #ifdef GV_UNIQUE_CHECK
810 if (GvUNIQUE((GV*)varsv)) {
811 Perl_croak(aTHX_ "Attempt to tie unique GV");
814 methname = "TIEHANDLE";
815 how = PERL_MAGIC_tiedscalar;
816 /* For tied filehandles, we apply tiedscalar magic to the IO
817 slot of the GP rather than the GV itself. AMS 20010812 */
819 GvIOp(varsv) = newIO();
820 varsv = (SV *)GvIOp(varsv);
823 methname = "TIESCALAR";
824 how = PERL_MAGIC_tiedscalar;
828 if (sv_isobject(*MARK)) {
830 PUSHSTACKi(PERLSI_MAGIC);
832 EXTEND(SP,(I32)items);
836 call_method(methname, G_SCALAR);
839 /* Not clear why we don't call call_method here too.
840 * perhaps to get different error message ?
842 stash = gv_stashsv(*MARK, FALSE);
843 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
844 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
845 methname, (void*)*MARK);
848 PUSHSTACKi(PERLSI_MAGIC);
850 EXTEND(SP,(I32)items);
854 call_sv((SV*)GvCV(gv), G_SCALAR);
860 if (sv_isobject(sv)) {
861 sv_unmagic(varsv, how);
862 /* Croak if a self-tie on an aggregate is attempted. */
863 if (varsv == SvRV(sv) &&
864 (SvTYPE(varsv) == SVt_PVAV ||
865 SvTYPE(varsv) == SVt_PVHV))
867 "Self-ties of arrays and hashes are not supported");
868 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
871 SP = PL_stack_base + markoff;
881 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
882 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
884 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
887 if ((mg = SvTIED_mg(sv, how))) {
888 SV * const obj = SvRV(SvTIED_obj(sv, mg));
890 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
892 if (gv && isGV(gv) && (cv = GvCV(gv))) {
894 XPUSHs(SvTIED_obj((SV*)gv, mg));
895 XPUSHs(sv_2mortal(newSViv(SvREFCNT(obj)-1)));
898 call_sv((SV *)cv, G_VOID);
902 else if (mg && SvREFCNT(obj) > 1 && ckWARN(WARN_UNTIE)) {
903 Perl_warner(aTHX_ packWARN(WARN_UNTIE),
904 "untie attempted while %"UVuf" inner references still exist",
905 (UV)SvREFCNT(obj) - 1 ) ;
909 sv_unmagic(sv, how) ;
919 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
920 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
922 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
925 if ((mg = SvTIED_mg(sv, how))) {
926 SV *osv = SvTIED_obj(sv, mg);
927 if (osv == mg->mg_obj)
928 osv = sv_mortalcopy(osv);
942 HV * const hv = (HV*)POPs;
943 SV * const sv = sv_2mortal(newSVpvs("AnyDBM_File"));
944 stash = gv_stashsv(sv, FALSE);
945 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
947 require_pv("AnyDBM_File.pm");
949 if (!(gv = gv_fetchmethod(stash, "TIEHASH")))
950 DIE(aTHX_ "No dbm on this machine");
960 PUSHs(sv_2mortal(newSVuv(O_RDWR|O_CREAT)));
962 PUSHs(sv_2mortal(newSVuv(O_RDWR)));
965 call_sv((SV*)GvCV(gv), G_SCALAR);
968 if (!sv_isobject(TOPs)) {
973 PUSHs(sv_2mortal(newSVuv(O_RDONLY)));
976 call_sv((SV*)GvCV(gv), G_SCALAR);
980 if (sv_isobject(TOPs)) {
981 sv_unmagic((SV *) hv, PERL_MAGIC_tied);
982 sv_magic((SV*)hv, TOPs, PERL_MAGIC_tied, NULL, 0);
999 struct timeval timebuf;
1000 struct timeval *tbuf = &timebuf;
1003 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1008 # if BYTEORDER & 0xf0000
1009 # define ORDERBYTE (0x88888888 - BYTEORDER)
1011 # define ORDERBYTE (0x4444 - BYTEORDER)
1017 for (i = 1; i <= 3; i++) {
1018 SV * const sv = SP[i];
1021 if (SvREADONLY(sv)) {
1023 sv_force_normal_flags(sv, 0);
1024 if (SvREADONLY(sv) && !(SvPOK(sv) && SvCUR(sv) == 0))
1025 DIE(aTHX_ PL_no_modify);
1028 if (ckWARN(WARN_MISC))
1029 Perl_warner(aTHX_ packWARN(WARN_MISC), "Non-string passed as bitmask");
1030 SvPV_force_nolen(sv); /* force string conversion */
1037 /* little endians can use vecs directly */
1038 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1045 masksize = NFDBITS / NBBY;
1047 masksize = sizeof(long); /* documented int, everyone seems to use long */
1049 Zero(&fd_sets[0], 4, char*);
1052 # if SELECT_MIN_BITS == 1
1053 growsize = sizeof(fd_set);
1055 # if defined(__GLIBC__) && defined(__FD_SETSIZE)
1056 # undef SELECT_MIN_BITS
1057 # define SELECT_MIN_BITS __FD_SETSIZE
1059 /* If SELECT_MIN_BITS is greater than one we most probably will want
1060 * to align the sizes with SELECT_MIN_BITS/8 because for example
1061 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
1062 * UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
1063 * on (sets/tests/clears bits) is 32 bits. */
1064 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
1072 timebuf.tv_sec = (long)value;
1073 value -= (NV)timebuf.tv_sec;
1074 timebuf.tv_usec = (long)(value * 1000000.0);
1079 for (i = 1; i <= 3; i++) {
1081 if (!SvOK(sv) || SvCUR(sv) == 0) {
1088 Sv_Grow(sv, growsize);
1092 while (++j <= growsize) {
1096 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1098 Newx(fd_sets[i], growsize, char);
1099 for (offset = 0; offset < growsize; offset += masksize) {
1100 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1101 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1104 fd_sets[i] = SvPVX(sv);
1108 #ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1109 /* Can't make just the (void*) conditional because that would be
1110 * cpp #if within cpp macro, and not all compilers like that. */
1111 nfound = PerlSock_select(
1113 (Select_fd_set_t) fd_sets[1],
1114 (Select_fd_set_t) fd_sets[2],
1115 (Select_fd_set_t) fd_sets[3],
1116 (void*) tbuf); /* Workaround for compiler bug. */
1118 nfound = PerlSock_select(
1120 (Select_fd_set_t) fd_sets[1],
1121 (Select_fd_set_t) fd_sets[2],
1122 (Select_fd_set_t) fd_sets[3],
1125 for (i = 1; i <= 3; i++) {
1128 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1130 for (offset = 0; offset < growsize; offset += masksize) {
1131 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1132 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1134 Safefree(fd_sets[i]);
1141 if (GIMME == G_ARRAY && tbuf) {
1142 value = (NV)(timebuf.tv_sec) +
1143 (NV)(timebuf.tv_usec) / 1000000.0;
1144 PUSHs(sv_2mortal(newSVnv(value)));
1148 DIE(aTHX_ "select not implemented");
1153 Perl_setdefout(pTHX_ GV *gv)
1156 SvREFCNT_inc_simple_void(gv);
1158 SvREFCNT_dec(PL_defoutgv);
1166 GV * const newdefout = (PL_op->op_private > 0) ? ((GV *) POPs) : NULL;
1167 GV * egv = GvEGV(PL_defoutgv);
1173 XPUSHs(&PL_sv_undef);
1175 GV * const * const gvp = (GV**)hv_fetch(hv, GvNAME(egv), GvNAMELEN(egv), FALSE);
1176 if (gvp && *gvp == egv) {
1177 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
1181 XPUSHs(sv_2mortal(newRV((SV*)egv)));
1186 if (!GvIO(newdefout))
1187 gv_IOadd(newdefout);
1188 setdefout(newdefout);
1198 GV * const gv = (MAXARG==0) ? PL_stdingv : (GV*)POPs;
1200 if (gv && (io = GvIO(gv))) {
1201 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
1203 const I32 gimme = GIMME_V;
1205 XPUSHs(SvTIED_obj((SV*)io, mg));
1208 call_method("GETC", gimme);
1211 if (gimme == G_SCALAR)
1212 SvSetMagicSV_nosteal(TARG, TOPs);
1216 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
1217 if ((!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
1218 && ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1219 report_evil_fh(gv, io, PL_op->op_type);
1220 SETERRNO(EBADF,RMS_IFI);
1224 sv_setpvn(TARG, " ", 1);
1225 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
1226 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1227 /* Find out how many bytes the char needs */
1228 Size_t len = UTF8SKIP(SvPVX_const(TARG));
1231 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1232 SvCUR_set(TARG,1+len);
1241 S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
1244 register PERL_CONTEXT *cx;
1245 const I32 gimme = GIMME_V;
1250 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
1252 cx->blk_sub.retop = retop;
1254 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), 1);
1256 setdefout(gv); /* locally select filehandle so $% et al work */
1287 goto not_a_format_reference;
1291 SV * const tmpsv = sv_newmortal();
1293 gv_efullname4(tmpsv, fgv, NULL, FALSE);
1294 name = SvPV_nolen_const(tmpsv);
1296 DIE(aTHX_ "Undefined format \"%s\" called", name);
1298 not_a_format_reference:
1299 DIE(aTHX_ "Not a format reference");
1302 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
1304 IoFLAGS(io) &= ~IOf_DIDTOP;
1305 return doform(cv,gv,PL_op->op_next);
1311 GV * const gv = cxstack[cxstack_ix].blk_sub.gv;
1312 register IO * const io = GvIOp(gv);
1317 register PERL_CONTEXT *cx;
1319 if (!io || !(ofp = IoOFP(io)))
1322 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
1323 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
1325 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1326 PL_formtarget != PL_toptarget)
1330 if (!IoTOP_GV(io)) {
1333 if (!IoTOP_NAME(io)) {
1335 if (!IoFMT_NAME(io))
1336 IoFMT_NAME(io) = savepv(GvNAME(gv));
1337 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%s_TOP", GvNAME(gv)));
1338 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
1339 if ((topgv && GvFORM(topgv)) ||
1340 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
1341 IoTOP_NAME(io) = savesvpv(topname);
1343 IoTOP_NAME(io) = savepvs("top");
1345 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
1346 if (!topgv || !GvFORM(topgv)) {
1347 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1350 IoTOP_GV(io) = topgv;
1352 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1353 I32 lines = IoLINES_LEFT(io);
1354 const char *s = SvPVX_const(PL_formtarget);
1355 if (lines <= 0) /* Yow, header didn't even fit!!! */
1357 while (lines-- > 0) {
1358 s = strchr(s, '\n');
1364 const STRLEN save = SvCUR(PL_formtarget);
1365 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
1366 do_print(PL_formtarget, ofp);
1367 SvCUR_set(PL_formtarget, save);
1368 sv_chop(PL_formtarget, s);
1369 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
1372 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
1373 do_print(PL_formfeed, ofp);
1374 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1376 PL_formtarget = PL_toptarget;
1377 IoFLAGS(io) |= IOf_DIDTOP;
1380 DIE(aTHX_ "bad top format reference");
1383 SV * const sv = sv_newmortal();
1385 gv_efullname4(sv, fgv, NULL, FALSE);
1386 name = SvPV_nolen_const(sv);
1388 DIE(aTHX_ "Undefined top format \"%s\" called", name);
1390 DIE(aTHX_ "Undefined top format called");
1392 if (cv && CvCLONE(cv))
1393 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
1394 return doform(cv, gv, PL_op);
1398 POPBLOCK(cx,PL_curpm);
1404 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
1406 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
1407 else if (ckWARN(WARN_CLOSED))
1408 report_evil_fh(gv, io, PL_op->op_type);
1413 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
1414 if (ckWARN(WARN_IO))
1415 Perl_warner(aTHX_ packWARN(WARN_IO), "page overflow");
1417 if (!do_print(PL_formtarget, fp))
1420 FmLINES(PL_formtarget) = 0;
1421 SvCUR_set(PL_formtarget, 0);
1422 *SvEND(PL_formtarget) = '\0';
1423 if (IoFLAGS(io) & IOf_FLUSH)
1424 (void)PerlIO_flush(fp);
1429 PL_formtarget = PL_bodytarget;
1431 PERL_UNUSED_VAR(newsp);
1432 PERL_UNUSED_VAR(gimme);
1433 return cx->blk_sub.retop;
1438 dVAR; dSP; dMARK; dORIGMARK;
1443 GV * const gv = (PL_op->op_flags & OPf_STACKED) ? (GV*)*++MARK : PL_defoutgv;
1445 if (gv && (io = GvIO(gv))) {
1446 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
1448 if (MARK == ORIGMARK) {
1451 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1455 *MARK = SvTIED_obj((SV*)io, mg);
1458 call_method("PRINTF", G_SCALAR);
1461 MARK = ORIGMARK + 1;
1469 if (!(io = GvIO(gv))) {
1470 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1471 report_evil_fh(gv, io, PL_op->op_type);
1472 SETERRNO(EBADF,RMS_IFI);
1475 else if (!(fp = IoOFP(io))) {
1476 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
1478 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
1479 else if (ckWARN(WARN_CLOSED))
1480 report_evil_fh(gv, io, PL_op->op_type);
1482 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
1486 do_sprintf(sv, SP - MARK, MARK + 1);
1487 if (!do_print(sv, fp))
1490 if (IoFLAGS(io) & IOf_FLUSH)
1491 if (PerlIO_flush(fp) == EOF)
1502 PUSHs(&PL_sv_undef);
1510 const int perm = (MAXARG > 3) ? POPi : 0666;
1511 const int mode = POPi;
1512 SV * const sv = POPs;
1513 GV * const gv = (GV *)POPs;
1516 /* Need TIEHANDLE method ? */
1517 const char * const tmps = SvPV_const(sv, len);
1518 /* FIXME? do_open should do const */
1519 if (do_open(gv, tmps, len, TRUE, mode, perm, NULL)) {
1520 IoLINES(GvIOp(gv)) = 0;
1524 PUSHs(&PL_sv_undef);
1531 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
1537 Sock_size_t bufsize;
1545 bool charstart = FALSE;
1546 STRLEN charskip = 0;
1549 GV * const gv = (GV*)*++MARK;
1550 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1551 && gv && (io = GvIO(gv)) )
1553 const MAGIC * mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
1557 *MARK = SvTIED_obj((SV*)io, mg);
1559 call_method("READ", G_SCALAR);
1573 sv_setpvn(bufsv, "", 0);
1574 length = SvIVx(*++MARK);
1577 offset = SvIVx(*++MARK);
1581 if (!io || !IoIFP(io)) {
1582 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1583 report_evil_fh(gv, io, PL_op->op_type);
1584 SETERRNO(EBADF,RMS_IFI);
1587 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
1588 buffer = SvPVutf8_force(bufsv, blen);
1589 /* UTF-8 may not have been set if they are all low bytes */
1594 buffer = SvPV_force(bufsv, blen);
1595 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
1598 DIE(aTHX_ "Negative length");
1606 if (PL_op->op_type == OP_RECV) {
1607 char namebuf[MAXPATHLEN];
1608 #if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
1609 bufsize = sizeof (struct sockaddr_in);
1611 bufsize = sizeof namebuf;
1613 #ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1617 buffer = SvGROW(bufsv, (STRLEN)(length+1));
1618 /* 'offset' means 'flags' here */
1619 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
1620 (struct sockaddr *)namebuf, &bufsize);
1624 /* Bogus return without padding */
1625 bufsize = sizeof (struct sockaddr_in);
1627 SvCUR_set(bufsv, count);
1628 *SvEND(bufsv) = '\0';
1629 (void)SvPOK_only(bufsv);
1633 /* This should not be marked tainted if the fp is marked clean */
1634 if (!(IoFLAGS(io) & IOf_UNTAINT))
1635 SvTAINTED_on(bufsv);
1637 sv_setpvn(TARG, namebuf, bufsize);
1642 if (PL_op->op_type == OP_RECV)
1643 DIE(aTHX_ PL_no_sock_func, "recv");
1645 if (DO_UTF8(bufsv)) {
1646 /* offset adjust in characters not bytes */
1647 blen = sv_len_utf8(bufsv);
1650 if (-offset > (int)blen)
1651 DIE(aTHX_ "Offset outside string");
1654 if (DO_UTF8(bufsv)) {
1655 /* convert offset-as-chars to offset-as-bytes */
1656 if (offset >= (int)blen)
1657 offset += SvCUR(bufsv) - blen;
1659 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
1662 bufsize = SvCUR(bufsv);
1663 /* Allocating length + offset + 1 isn't perfect in the case of reading
1664 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1666 (should be 2 * length + offset + 1, or possibly something longer if
1667 PL_encoding is true) */
1668 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
1669 if (offset > 0 && (Sock_size_t)offset > bufsize) { /* Zero any newly allocated space */
1670 Zero(buffer+bufsize, offset-bufsize, char);
1672 buffer = buffer + offset;
1674 read_target = bufsv;
1676 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1677 concatenate it to the current buffer. */
1679 /* Truncate the existing buffer to the start of where we will be
1681 SvCUR_set(bufsv, offset);
1683 read_target = sv_newmortal();
1684 SvUPGRADE(read_target, SVt_PV);
1685 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1688 if (PL_op->op_type == OP_SYSREAD) {
1689 #ifdef PERL_SOCK_SYSREAD_IS_RECV
1690 if (IoTYPE(io) == IoTYPE_SOCKET) {
1691 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1697 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1702 #ifdef HAS_SOCKET__bad_code_maybe
1703 if (IoTYPE(io) == IoTYPE_SOCKET) {
1704 char namebuf[MAXPATHLEN];
1705 #if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1706 bufsize = sizeof (struct sockaddr_in);
1708 bufsize = sizeof namebuf;
1710 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
1711 (struct sockaddr *)namebuf, &bufsize);
1716 count = PerlIO_read(IoIFP(io), buffer, length);
1717 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1718 if (count == 0 && PerlIO_error(IoIFP(io)))
1722 if ((IoTYPE(io) == IoTYPE_WRONLY) && ckWARN(WARN_IO))
1723 report_evil_fh(gv, io, OP_phoney_OUTPUT_ONLY);
1726 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1727 *SvEND(read_target) = '\0';
1728 (void)SvPOK_only(read_target);
1729 if (fp_utf8 && !IN_BYTES) {
1730 /* Look at utf8 we got back and count the characters */
1731 const char *bend = buffer + count;
1732 while (buffer < bend) {
1734 skip = UTF8SKIP(buffer);
1737 if (buffer - charskip + skip > bend) {
1738 /* partial character - try for rest of it */
1739 length = skip - (bend-buffer);
1740 offset = bend - SvPVX_const(bufsv);
1752 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1753 provided amount read (count) was what was requested (length)
1755 if (got < wanted && count == length) {
1756 length = wanted - got;
1757 offset = bend - SvPVX_const(bufsv);
1760 /* return value is character count */
1764 else if (buffer_utf8) {
1765 /* Let svcatsv upgrade the bytes we read in to utf8.
1766 The buffer is a mortal so will be freed soon. */
1767 sv_catsv_nomg(bufsv, read_target);
1770 /* This should not be marked tainted if the fp is marked clean */
1771 if (!(IoFLAGS(io) & IOf_UNTAINT))
1772 SvTAINTED_on(bufsv);
1784 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
1790 STRLEN orig_blen_bytes;
1791 const int op_type = PL_op->op_type;
1795 GV *const gv = (GV*)*++MARK;
1796 if (PL_op->op_type == OP_SYSWRITE
1797 && gv && (io = GvIO(gv))) {
1798 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
1802 if (MARK == SP - 1) {
1804 sv = sv_2mortal(newSViv(sv_len(*SP)));
1810 *(ORIGMARK+1) = SvTIED_obj((SV*)io, mg);
1812 call_method("WRITE", G_SCALAR);
1828 if (!io || !IoIFP(io)) {
1830 if (ckWARN(WARN_CLOSED))
1831 report_evil_fh(gv, io, PL_op->op_type);
1832 SETERRNO(EBADF,RMS_IFI);
1836 /* Do this first to trigger any overloading. */
1837 buffer = SvPV_const(bufsv, blen);
1838 orig_blen_bytes = blen;
1839 doing_utf8 = DO_UTF8(bufsv);
1841 if (PerlIO_isutf8(IoIFP(io))) {
1842 if (!SvUTF8(bufsv)) {
1843 /* We don't modify the original scalar. */
1844 tmpbuf = bytes_to_utf8((const U8*) buffer, &blen);
1845 buffer = (char *) tmpbuf;
1849 else if (doing_utf8) {
1850 STRLEN tmplen = blen;
1851 U8 * const result = bytes_from_utf8((const U8*) buffer, &tmplen, &doing_utf8);
1854 buffer = (char *) tmpbuf;
1858 assert((char *)result == buffer);
1859 Perl_croak(aTHX_ "Wide character in %s", OP_DESC(PL_op));
1863 if (op_type == OP_SYSWRITE) {
1864 Size_t length = 0; /* This length is in characters. */
1870 /* The SV is bytes, and we've had to upgrade it. */
1871 blen_chars = orig_blen_bytes;
1873 /* The SV really is UTF-8. */
1874 if (SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
1875 /* Don't call sv_len_utf8 again because it will call magic
1876 or overloading a second time, and we might get back a
1877 different result. */
1878 blen_chars = utf8_length((U8*)buffer, (U8*)buffer + blen);
1880 /* It's safe, and it may well be cached. */
1881 blen_chars = sv_len_utf8(bufsv);
1889 length = blen_chars;
1891 #if Size_t_size > IVSIZE
1892 length = (Size_t)SvNVx(*++MARK);
1894 length = (Size_t)SvIVx(*++MARK);
1896 if ((SSize_t)length < 0) {
1898 DIE(aTHX_ "Negative length");
1903 offset = SvIVx(*++MARK);
1905 if (-offset > (IV)blen_chars) {
1907 DIE(aTHX_ "Offset outside string");
1909 offset += blen_chars;
1910 } else if (offset >= (IV)blen_chars && blen_chars > 0) {
1912 DIE(aTHX_ "Offset outside string");
1916 if (length > blen_chars - offset)
1917 length = blen_chars - offset;
1919 /* Here we convert length from characters to bytes. */
1920 if (tmpbuf || SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
1921 /* Either we had to convert the SV, or the SV is magical, or
1922 the SV has overloading, in which case we can't or mustn't
1923 or mustn't call it again. */
1925 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
1926 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1928 /* It's a real UTF-8 SV, and it's not going to change under
1929 us. Take advantage of any cache. */
1931 I32 len_I32 = length;
1933 /* Convert the start and end character positions to bytes.
1934 Remember that the second argument to sv_pos_u2b is relative
1936 sv_pos_u2b(bufsv, &start, &len_I32);
1943 buffer = buffer+offset;
1945 #ifdef PERL_SOCK_SYSWRITE_IS_SEND
1946 if (IoTYPE(io) == IoTYPE_SOCKET) {
1947 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
1953 /* See the note at doio.c:do_print about filesize limits. --jhi */
1954 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
1960 const int flags = SvIVx(*++MARK);
1963 char * const sockbuf = SvPVx(*++MARK, mlen);
1964 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1965 flags, (struct sockaddr *)sockbuf, mlen);
1969 = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, flags);
1974 DIE(aTHX_ PL_no_sock_func, "send");
1981 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
1984 #if Size_t_size > IVSIZE
2003 if (PL_op->op_flags & OPf_SPECIAL) { /* eof() */
2005 gv = PL_last_in_gv = GvEGV(PL_argvgv);
2007 if (io && !IoIFP(io)) {
2008 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
2010 IoFLAGS(io) &= ~IOf_START;
2011 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, NULL);
2012 sv_setpvn(GvSV(gv), "-", 1);
2013 SvSETMAGIC(GvSV(gv));
2015 else if (!nextargv(gv))
2020 gv = PL_last_in_gv; /* eof */
2023 gv = PL_last_in_gv = (GV*)POPs; /* eof(FH) */
2026 IO * const io = GvIO(gv);
2028 if (io && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) {
2030 XPUSHs(SvTIED_obj((SV*)io, mg));
2033 call_method("EOF", G_SCALAR);
2040 PUSHs(boolSV(!gv || do_eof(gv)));
2051 PL_last_in_gv = (GV*)POPs;
2054 if (gv && (io = GvIO(gv))) {
2055 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
2058 XPUSHs(SvTIED_obj((SV*)io, mg));
2061 call_method("TELL", G_SCALAR);
2068 #if LSEEKSIZE > IVSIZE
2069 PUSHn( do_tell(gv) );
2071 PUSHi( do_tell(gv) );
2079 const int whence = POPi;
2080 #if LSEEKSIZE > IVSIZE
2081 const Off_t offset = (Off_t)SvNVx(POPs);
2083 const Off_t offset = (Off_t)SvIVx(POPs);
2086 GV * const gv = PL_last_in_gv = (GV*)POPs;
2089 if (gv && (io = GvIO(gv))) {
2090 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
2093 XPUSHs(SvTIED_obj((SV*)io, mg));
2094 #if LSEEKSIZE > IVSIZE
2095 XPUSHs(sv_2mortal(newSVnv((NV) offset)));
2097 XPUSHs(sv_2mortal(newSViv(offset)));
2099 XPUSHs(sv_2mortal(newSViv(whence)));
2102 call_method("SEEK", G_SCALAR);
2109 if (PL_op->op_type == OP_SEEK)
2110 PUSHs(boolSV(do_seek(gv, offset, whence)));
2112 const Off_t sought = do_sysseek(gv, offset, whence);
2114 PUSHs(&PL_sv_undef);
2116 SV* const sv = sought ?
2117 #if LSEEKSIZE > IVSIZE
2122 : newSVpvn(zero_but_true, ZBTLEN);
2123 PUSHs(sv_2mortal(sv));
2133 /* There seems to be no consensus on the length type of truncate()
2134 * and ftruncate(), both off_t and size_t have supporters. In
2135 * general one would think that when using large files, off_t is
2136 * at least as wide as size_t, so using an off_t should be okay. */
2137 /* XXX Configure probe for the length type of *truncate() needed XXX */
2140 #if Off_t_size > IVSIZE
2145 /* Checking for length < 0 is problematic as the type might or
2146 * might not be signed: if it is not, clever compilers will moan. */
2147 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
2154 if (PL_op->op_flags & OPf_SPECIAL) {
2155 tmpgv = gv_fetchsv(POPs, 0, SVt_PVIO);
2164 TAINT_PROPER("truncate");
2165 if (!(fp = IoIFP(io))) {
2171 if (ftruncate(PerlIO_fileno(fp), len) < 0)
2173 if (my_chsize(PerlIO_fileno(fp), len) < 0)
2180 SV * const sv = POPs;
2183 if (SvTYPE(sv) == SVt_PVGV) {
2184 tmpgv = (GV*)sv; /* *main::FRED for example */
2185 goto do_ftruncate_gv;
2187 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2188 tmpgv = (GV*) SvRV(sv); /* \*main::FRED for example */
2189 goto do_ftruncate_gv;
2191 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2192 io = (IO*) SvRV(sv); /* *main::FRED{IO} for example */
2193 goto do_ftruncate_io;
2196 name = SvPV_nolen_const(sv);
2197 TAINT_PROPER("truncate");
2199 if (truncate(name, len) < 0)
2203 const int tmpfd = PerlLIO_open(name, O_RDWR);
2208 if (my_chsize(tmpfd, len) < 0)
2210 PerlLIO_close(tmpfd);
2219 SETERRNO(EBADF,RMS_IFI);
2227 SV * const argsv = POPs;
2228 const unsigned int func = POPu;
2229 const int optype = PL_op->op_type;
2230 GV * const gv = (GV*)POPs;
2231 IO * const io = gv ? GvIOn(gv) : NULL;
2235 if (!io || !argsv || !IoIFP(io)) {
2236 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2237 report_evil_fh(gv, io, PL_op->op_type);
2238 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
2242 if (SvPOK(argsv) || !SvNIOK(argsv)) {
2245 s = SvPV_force(argsv, len);
2246 need = IOCPARM_LEN(func);
2248 s = Sv_Grow(argsv, need + 1);
2249 SvCUR_set(argsv, need);
2252 s[SvCUR(argsv)] = 17; /* a little sanity check here */
2255 retval = SvIV(argsv);
2256 s = INT2PTR(char*,retval); /* ouch */
2259 TAINT_PROPER(PL_op_desc[optype]);
2261 if (optype == OP_IOCTL)
2263 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
2265 DIE(aTHX_ "ioctl is not implemented");
2269 DIE(aTHX_ "fcntl is not implemented");
2271 #if defined(OS2) && defined(__EMX__)
2272 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
2274 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
2278 #if defined(HAS_IOCTL) || defined(HAS_FCNTL)
2280 if (s[SvCUR(argsv)] != 17)
2281 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
2283 s[SvCUR(argsv)] = 0; /* put our null back */
2284 SvSETMAGIC(argsv); /* Assume it has changed */
2293 PUSHp(zero_but_true, ZBTLEN);
2306 const int argtype = POPi;
2307 GV * const gv = (MAXARG == 0) ? PL_last_in_gv : (GV*)POPs;
2309 if (gv && (io = GvIO(gv)))
2315 /* XXX Looks to me like io is always NULL at this point */
2317 (void)PerlIO_flush(fp);
2318 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
2321 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2322 report_evil_fh(gv, io, PL_op->op_type);
2324 SETERRNO(EBADF,RMS_IFI);
2329 DIE(aTHX_ PL_no_func, "flock()");
2339 const int protocol = POPi;
2340 const int type = POPi;
2341 const int domain = POPi;
2342 GV * const gv = (GV*)POPs;
2343 register IO * const io = gv ? GvIOn(gv) : NULL;
2347 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2348 report_evil_fh(gv, io, PL_op->op_type);
2349 if (io && IoIFP(io))
2350 do_close(gv, FALSE);
2351 SETERRNO(EBADF,LIB_INVARG);
2356 do_close(gv, FALSE);
2358 TAINT_PROPER("socket");
2359 fd = PerlSock_socket(domain, type, protocol);
2362 IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2363 IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
2364 IoTYPE(io) = IoTYPE_SOCKET;
2365 if (!IoIFP(io) || !IoOFP(io)) {
2366 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2367 if (IoOFP(io)) PerlIO_close(IoOFP(io));
2368 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
2371 #if defined(HAS_FCNTL) && defined(F_SETFD)
2372 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2376 setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
2381 DIE(aTHX_ PL_no_sock_func, "socket");
2387 #if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
2389 const int protocol = POPi;
2390 const int type = POPi;
2391 const int domain = POPi;
2392 GV * const gv2 = (GV*)POPs;
2393 GV * const gv1 = (GV*)POPs;
2394 register IO * const io1 = gv1 ? GvIOn(gv1) : NULL;
2395 register IO * const io2 = gv2 ? GvIOn(gv2) : NULL;
2398 if (!gv1 || !gv2 || !io1 || !io2) {
2399 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
2401 report_evil_fh(gv1, io1, PL_op->op_type);
2403 report_evil_fh(gv1, io2, PL_op->op_type);
2405 if (io1 && IoIFP(io1))
2406 do_close(gv1, FALSE);
2407 if (io2 && IoIFP(io2))
2408 do_close(gv2, FALSE);
2413 do_close(gv1, FALSE);
2415 do_close(gv2, FALSE);
2417 TAINT_PROPER("socketpair");
2418 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
2420 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2421 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
2422 IoTYPE(io1) = IoTYPE_SOCKET;
2423 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2424 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
2425 IoTYPE(io2) = IoTYPE_SOCKET;
2426 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
2427 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2428 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
2429 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
2430 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2431 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
2432 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
2435 #if defined(HAS_FCNTL) && defined(F_SETFD)
2436 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2437 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2442 DIE(aTHX_ PL_no_sock_func, "socketpair");
2450 SV * const addrsv = POPs;
2451 /* OK, so on what platform does bind modify addr? */
2453 GV * const gv = (GV*)POPs;
2454 register IO * const io = GvIOn(gv);
2457 if (!io || !IoIFP(io))
2460 addr = SvPV_const(addrsv, len);
2461 TAINT_PROPER("bind");
2462 if (PerlSock_bind(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
2468 if (ckWARN(WARN_CLOSED))
2469 report_evil_fh(gv, io, PL_op->op_type);
2470 SETERRNO(EBADF,SS_IVCHAN);
2473 DIE(aTHX_ PL_no_sock_func, "bind");
2481 SV * const addrsv = POPs;
2482 GV * const gv = (GV*)POPs;
2483 register IO * const io = GvIOn(gv);
2487 if (!io || !IoIFP(io))
2490 addr = SvPV_const(addrsv, len);
2491 TAINT_PROPER("connect");
2492 if (PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
2498 if (ckWARN(WARN_CLOSED))
2499 report_evil_fh(gv, io, PL_op->op_type);
2500 SETERRNO(EBADF,SS_IVCHAN);
2503 DIE(aTHX_ PL_no_sock_func, "connect");
2511 const int backlog = POPi;
2512 GV * const gv = (GV*)POPs;
2513 register IO * const io = gv ? GvIOn(gv) : NULL;
2515 if (!gv || !io || !IoIFP(io))
2518 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
2524 if (ckWARN(WARN_CLOSED))
2525 report_evil_fh(gv, io, PL_op->op_type);
2526 SETERRNO(EBADF,SS_IVCHAN);
2529 DIE(aTHX_ PL_no_sock_func, "listen");
2539 char namebuf[MAXPATHLEN];
2540 #if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
2541 Sock_size_t len = sizeof (struct sockaddr_in);
2543 Sock_size_t len = sizeof namebuf;
2545 GV * const ggv = (GV*)POPs;
2546 GV * const ngv = (GV*)POPs;
2555 if (!gstio || !IoIFP(gstio))
2559 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
2563 do_close(ngv, FALSE);
2564 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2565 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
2566 IoTYPE(nstio) = IoTYPE_SOCKET;
2567 if (!IoIFP(nstio) || !IoOFP(nstio)) {
2568 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2569 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
2570 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
2573 #if defined(HAS_FCNTL) && defined(F_SETFD)
2574 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2578 len = sizeof (struct sockaddr_in); /* EPOC somehow truncates info */
2579 setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
2581 #ifdef __SCO_VERSION__
2582 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
2585 PUSHp(namebuf, len);
2589 if (ckWARN(WARN_CLOSED))
2590 report_evil_fh(ggv, ggv ? GvIO(ggv) : 0, PL_op->op_type);
2591 SETERRNO(EBADF,SS_IVCHAN);
2597 DIE(aTHX_ PL_no_sock_func, "accept");
2605 const int how = POPi;
2606 GV * const gv = (GV*)POPs;
2607 register IO * const io = GvIOn(gv);
2609 if (!io || !IoIFP(io))
2612 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
2616 if (ckWARN(WARN_CLOSED))
2617 report_evil_fh(gv, io, PL_op->op_type);
2618 SETERRNO(EBADF,SS_IVCHAN);
2621 DIE(aTHX_ PL_no_sock_func, "shutdown");
2629 const int optype = PL_op->op_type;
2630 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
2631 const unsigned int optname = (unsigned int) POPi;
2632 const unsigned int lvl = (unsigned int) POPi;
2633 GV * const gv = (GV*)POPs;
2634 register IO * const io = GvIOn(gv);
2638 if (!io || !IoIFP(io))
2641 fd = PerlIO_fileno(IoIFP(io));
2645 (void)SvPOK_only(sv);
2649 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
2656 #if defined(__SYMBIAN32__)
2657 # define SETSOCKOPT_OPTION_VALUE_T void *
2659 # define SETSOCKOPT_OPTION_VALUE_T const char *
2661 /* XXX TODO: We need to have a proper type (a Configure probe,
2662 * etc.) for what the C headers think of the third argument of
2663 * setsockopt(), the option_value read-only buffer: is it
2664 * a "char *", or a "void *", const or not. Some compilers
2665 * don't take kindly to e.g. assuming that "char *" implicitly
2666 * promotes to a "void *", or to explicitly promoting/demoting
2667 * consts to non/vice versa. The "const void *" is the SUS
2668 * definition, but that does not fly everywhere for the above
2670 SETSOCKOPT_OPTION_VALUE_T buf;
2674 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2678 aint = (int)SvIV(sv);
2679 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
2682 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
2691 if (ckWARN(WARN_CLOSED))
2692 report_evil_fh(gv, io, optype);
2693 SETERRNO(EBADF,SS_IVCHAN);
2698 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
2706 const int optype = PL_op->op_type;
2707 GV * const gv = (GV*)POPs;
2708 register IO * const io = GvIOn(gv);
2713 if (!io || !IoIFP(io))
2716 sv = sv_2mortal(newSV(257));
2717 (void)SvPOK_only(sv);
2721 fd = PerlIO_fileno(IoIFP(io));
2723 case OP_GETSOCKNAME:
2724 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2727 case OP_GETPEERNAME:
2728 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2730 #if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2732 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";
2733 /* If the call succeeded, make sure we don't have a zeroed port/addr */
2734 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2735 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
2736 sizeof(u_short) + sizeof(struct in_addr))) {
2743 #ifdef BOGUS_GETNAME_RETURN
2744 /* Interactive Unix, getpeername() and getsockname()
2745 does not return valid namelen */
2746 if (len == BOGUS_GETNAME_RETURN)
2747 len = sizeof(struct sockaddr);
2755 if (ckWARN(WARN_CLOSED))
2756 report_evil_fh(gv, io, optype);
2757 SETERRNO(EBADF,SS_IVCHAN);
2762 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
2776 if (PL_op->op_flags & OPf_REF) {
2778 if (PL_op->op_type == OP_LSTAT) {
2779 if (gv != PL_defgv) {
2780 do_fstat_warning_check:
2781 if (ckWARN(WARN_IO))
2782 Perl_warner(aTHX_ packWARN(WARN_IO),
2783 "lstat() on filehandle %s", GvENAME(gv));
2784 } else if (PL_laststype != OP_LSTAT)
2785 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
2789 if (gv != PL_defgv) {
2790 PL_laststype = OP_STAT;
2792 sv_setpvn(PL_statname, "", 0);
2793 PL_laststatval = (GvIO(gv) && IoIFP(GvIOp(gv))
2794 ? PerlLIO_fstat(PerlIO_fileno(IoIFP(GvIOn(gv))), &PL_statcache) : -1);
2796 if (PL_laststatval < 0) {
2797 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2798 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
2803 SV* const sv = POPs;
2804 if (SvTYPE(sv) == SVt_PVGV) {
2808 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2810 if (PL_op->op_type == OP_LSTAT)
2811 goto do_fstat_warning_check;
2814 sv_setpv(PL_statname, SvPV_nolen_const(sv));
2816 PL_laststype = PL_op->op_type;
2817 if (PL_op->op_type == OP_LSTAT)
2818 PL_laststatval = PerlLIO_lstat(SvPV_nolen_const(PL_statname), &PL_statcache);
2820 PL_laststatval = PerlLIO_stat(SvPV_nolen_const(PL_statname), &PL_statcache);
2821 if (PL_laststatval < 0) {
2822 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname), '\n'))
2823 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
2829 if (gimme != G_ARRAY) {
2830 if (gimme != G_VOID)
2831 XPUSHs(boolSV(max));
2837 PUSHs(sv_2mortal(newSViv(PL_statcache.st_dev)));
2838 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ino)));
2839 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_mode)));
2840 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_nlink)));
2841 #if Uid_t_size > IVSIZE
2842 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_uid)));
2844 # if Uid_t_sign <= 0
2845 PUSHs(sv_2mortal(newSViv(PL_statcache.st_uid)));
2847 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_uid)));
2850 #if Gid_t_size > IVSIZE
2851 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_gid)));
2853 # if Gid_t_sign <= 0
2854 PUSHs(sv_2mortal(newSViv(PL_statcache.st_gid)));
2856 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_gid)));
2859 #ifdef USE_STAT_RDEV
2860 PUSHs(sv_2mortal(newSViv(PL_statcache.st_rdev)));
2862 PUSHs(sv_2mortal(newSVpvs("")));
2864 #if Off_t_size > IVSIZE
2865 PUSHs(sv_2mortal(newSVnv((NV)PL_statcache.st_size)));
2867 PUSHs(sv_2mortal(newSViv(PL_statcache.st_size)));
2870 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_atime)));
2871 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_mtime)));
2872 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_ctime)));
2874 PUSHs(sv_2mortal(newSViv(PL_statcache.st_atime)));
2875 PUSHs(sv_2mortal(newSViv(PL_statcache.st_mtime)));
2876 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ctime)));
2878 #ifdef USE_STAT_BLOCKS
2879 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blksize)));
2880 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blocks)));
2882 PUSHs(sv_2mortal(newSVpvs("")));
2883 PUSHs(sv_2mortal(newSVpvs("")));
2889 /* This macro is used by the stacked filetest operators :
2890 * if the previous filetest failed, short-circuit and pass its value.
2891 * Else, discard it from the stack and continue. --rgs
2893 #define STACKED_FTEST_CHECK if (PL_op->op_private & OPpFT_STACKED) { \
2894 if (TOPs == &PL_sv_no || TOPs == &PL_sv_undef) { RETURN; } \
2895 else { (void)POPs; PUTBACK; } \
2902 /* Not const, because things tweak this below. Not bool, because there's
2903 no guarantee that OPp_FT_ACCESS is <= CHAR_MAX */
2904 #if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2905 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
2906 /* Giving some sort of initial value silences compilers. */
2908 int access_mode = R_OK;
2910 int access_mode = 0;
2913 /* access_mode is never used, but leaving use_access in makes the
2914 conditional compiling below much clearer. */
2917 int stat_mode = S_IRUSR;
2919 bool effective = FALSE;
2922 STACKED_FTEST_CHECK;
2924 switch (PL_op->op_type) {
2926 #if !(defined(HAS_ACCESS) && defined(R_OK))
2932 #if defined(HAS_ACCESS) && defined(W_OK)
2937 stat_mode = S_IWUSR;
2941 #if defined(HAS_ACCESS) && defined(X_OK)
2946 stat_mode = S_IXUSR;
2950 #ifdef PERL_EFF_ACCESS
2953 stat_mode = S_IWUSR;
2957 #ifndef PERL_EFF_ACCESS
2965 #ifdef PERL_EFF_ACCESS
2970 stat_mode = S_IXUSR;
2976 #if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2977 const char *const name = POPpx;
2979 # ifdef PERL_EFF_ACCESS
2980 result = PERL_EFF_ACCESS(name, access_mode);
2982 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
2988 result = access(name, access_mode);
2990 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
3005 if (cando(stat_mode, effective, &PL_statcache))
3014 const int op_type = PL_op->op_type;
3016 STACKED_FTEST_CHECK;
3021 if (op_type == OP_FTIS)
3024 /* You can't dTARGET inside OP_FTIS, because you'll get
3025 "panic: pad_sv po" - the op is not flagged to have a target. */
3029 #if Off_t_size > IVSIZE
3030 PUSHn(PL_statcache.st_size);
3032 PUSHi(PL_statcache.st_size);
3036 PUSHn( (((NV)PL_basetime - PL_statcache.st_mtime)) / 86400.0 );
3039 PUSHn( (((NV)PL_basetime - PL_statcache.st_atime)) / 86400.0 );
3042 PUSHn( (((NV)PL_basetime - PL_statcache.st_ctime)) / 86400.0 );
3055 /* I believe that all these three are likely to be defined on most every
3056 system these days. */
3058 if(PL_op->op_type == OP_FTSUID)
3062 if(PL_op->op_type == OP_FTSGID)
3066 if(PL_op->op_type == OP_FTSVTX)
3070 STACKED_FTEST_CHECK;
3075 switch (PL_op->op_type) {
3077 if (PL_statcache.st_uid == PL_uid)
3081 if (PL_statcache.st_uid == PL_euid)
3085 if (PL_statcache.st_size == 0)
3089 if (S_ISSOCK(PL_statcache.st_mode))
3093 if (S_ISCHR(PL_statcache.st_mode))
3097 if (S_ISBLK(PL_statcache.st_mode))
3101 if (S_ISREG(PL_statcache.st_mode))
3105 if (S_ISDIR(PL_statcache.st_mode))
3109 if (S_ISFIFO(PL_statcache.st_mode))
3114 if (PL_statcache.st_mode & S_ISUID)
3120 if (PL_statcache.st_mode & S_ISGID)
3126 if (PL_statcache.st_mode & S_ISVTX)
3137 I32 result = my_lstat();
3141 if (S_ISLNK(PL_statcache.st_mode))
3154 STACKED_FTEST_CHECK;
3156 if (PL_op->op_flags & OPf_REF)
3158 else if (isGV(TOPs))
3160 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3161 gv = (GV*)SvRV(POPs);
3163 gv = gv_fetchsv(tmpsv = POPs, 0, SVt_PVIO);
3165 if (GvIO(gv) && IoIFP(GvIOp(gv)))
3166 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
3167 else if (tmpsv && SvOK(tmpsv)) {
3168 const char *tmps = SvPV_nolen_const(tmpsv);
3176 if (PerlLIO_isatty(fd))
3181 #if defined(atarist) /* this will work with atariST. Configure will
3182 make guesses for other systems. */
3183 # define FILE_base(f) ((f)->_base)
3184 # define FILE_ptr(f) ((f)->_ptr)
3185 # define FILE_cnt(f) ((f)->_cnt)
3186 # define FILE_bufsiz(f) ((f)->_cnt + ((f)->_ptr - (f)->_base))
3197 register STDCHAR *s;
3203 STACKED_FTEST_CHECK;
3205 if (PL_op->op_flags & OPf_REF)
3207 else if (isGV(TOPs))
3209 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3210 gv = (GV*)SvRV(POPs);
3216 if (gv == PL_defgv) {
3218 io = GvIO(PL_statgv);
3221 goto really_filename;
3226 PL_laststatval = -1;
3227 sv_setpvn(PL_statname, "", 0);
3228 io = GvIO(PL_statgv);
3230 if (io && IoIFP(io)) {
3231 if (! PerlIO_has_base(IoIFP(io)))
3232 DIE(aTHX_ "-T and -B not implemented on filehandles");
3233 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3234 if (PL_laststatval < 0)
3236 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
3237 if (PL_op->op_type == OP_FTTEXT)
3242 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
3243 i = PerlIO_getc(IoIFP(io));
3245 (void)PerlIO_ungetc(IoIFP(io),i);
3247 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
3249 len = PerlIO_get_bufsiz(IoIFP(io));
3250 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
3251 /* sfio can have large buffers - limit to 512 */
3256 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
3258 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
3260 SETERRNO(EBADF,RMS_IFI);
3268 PL_laststype = OP_STAT;
3269 sv_setpv(PL_statname, SvPV_nolen_const(sv));
3270 if (!(fp = PerlIO_open(SvPVX_const(PL_statname), "r"))) {
3271 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname),
3273 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
3276 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(fp), &PL_statcache);
3277 if (PL_laststatval < 0) {
3278 (void)PerlIO_close(fp);
3281 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, NULL);
3282 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3283 (void)PerlIO_close(fp);
3285 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
3286 RETPUSHNO; /* special case NFS directories */
3287 RETPUSHYES; /* null file is anything */
3292 /* now scan s to look for textiness */
3293 /* XXX ASCII dependent code */
3295 #if defined(DOSISH) || defined(USEMYBINMODE)
3296 /* ignore trailing ^Z on short files */
3297 if (len && len < sizeof(tbuf) && tbuf[len-1] == 26)
3301 for (i = 0; i < len; i++, s++) {
3302 if (!*s) { /* null never allowed in text */
3307 else if (!(isPRINT(*s) || isSPACE(*s)))
3310 else if (*s & 128) {
3312 if (IN_LOCALE_RUNTIME && isALPHA_LC(*s))
3315 /* utf8 characters don't count as odd */
3316 if (UTF8_IS_START(*s)) {
3317 int ulen = UTF8SKIP(s);
3318 if (ulen < len - i) {
3320 for (j = 1; j < ulen; j++) {
3321 if (!UTF8_IS_CONTINUATION(s[j]))
3324 --ulen; /* loop does extra increment */
3334 *s != '\n' && *s != '\r' && *s != '\b' &&
3335 *s != '\t' && *s != '\f' && *s != 27)
3340 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
3351 const char *tmps = NULL;
3355 SV * const sv = POPs;
3356 if (PL_op->op_flags & OPf_SPECIAL) {
3357 gv = gv_fetchsv(sv, 0, SVt_PVIO);
3359 else if (SvTYPE(sv) == SVt_PVGV) {
3362 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
3366 tmps = SvPVx_nolen_const(sv);
3370 if( !gv && (!tmps || !*tmps) ) {
3371 HV * const table = GvHVn(PL_envgv);
3374 if ( (svp = hv_fetchs(table, "HOME", FALSE))
3375 || (svp = hv_fetchs(table, "LOGDIR", FALSE))
3377 || (svp = hv_fetchs(table, "SYS$LOGIN", FALSE))
3382 deprecate("chdir('') or chdir(undef) as chdir()");
3383 tmps = SvPV_nolen_const(*svp);
3387 TAINT_PROPER("chdir");
3392 TAINT_PROPER("chdir");
3395 IO* const io = GvIO(gv);
3398 PUSHi(fchdir(PerlIO_fileno(IoIFP(io))) >= 0);
3400 else if (IoDIRP(io)) {
3402 PUSHi(fchdir(dirfd(IoDIRP(io))) >= 0);
3404 DIE(aTHX_ PL_no_func, "dirfd");
3408 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
3409 report_evil_fh(gv, io, PL_op->op_type);
3410 SETERRNO(EBADF, RMS_IFI);
3415 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
3416 report_evil_fh(gv, io, PL_op->op_type);
3417 SETERRNO(EBADF,RMS_IFI);
3421 DIE(aTHX_ PL_no_func, "fchdir");
3425 PUSHi( PerlDir_chdir(tmps) >= 0 );
3427 /* Clear the DEFAULT element of ENV so we'll get the new value
3429 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
3436 dVAR; dSP; dMARK; dTARGET;
3437 const I32 value = (I32)apply(PL_op->op_type, MARK, SP);
3448 char * const tmps = POPpx;
3449 TAINT_PROPER("chroot");
3450 PUSHi( chroot(tmps) >= 0 );
3453 DIE(aTHX_ PL_no_func, "chroot");
3461 const char * const tmps2 = POPpconstx;
3462 const char * const tmps = SvPV_nolen_const(TOPs);
3463 TAINT_PROPER("rename");
3465 anum = PerlLIO_rename(tmps, tmps2);
3467 if (!(anum = PerlLIO_stat(tmps, &PL_statbuf))) {
3468 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3471 if (PL_euid || PerlLIO_stat(tmps2, &PL_statbuf) < 0 || !S_ISDIR(PL_statbuf.st_mode))
3472 (void)UNLINK(tmps2);
3473 if (!(anum = link(tmps, tmps2)))
3474 anum = UNLINK(tmps);
3482 #if defined(HAS_LINK) || defined(HAS_SYMLINK)
3486 const int op_type = PL_op->op_type;
3490 if (op_type == OP_LINK)
3491 DIE(aTHX_ PL_no_func, "link");
3493 # ifndef HAS_SYMLINK
3494 if (op_type == OP_SYMLINK)
3495 DIE(aTHX_ PL_no_func, "symlink");
3499 const char * const tmps2 = POPpconstx;
3500 const char * const tmps = SvPV_nolen_const(TOPs);
3501 TAINT_PROPER(PL_op_desc[op_type]);
3503 # if defined(HAS_LINK)
3504 # if defined(HAS_SYMLINK)
3505 /* Both present - need to choose which. */
3506 (op_type == OP_LINK) ?
3507 PerlLIO_link(tmps, tmps2) : symlink(tmps, tmps2);
3509 /* Only have link, so calls to pp_symlink will have DIE()d above. */
3510 PerlLIO_link(tmps, tmps2);
3513 # if defined(HAS_SYMLINK)
3514 /* Only have symlink, so calls to pp_link will have DIE()d above. */
3515 symlink(tmps, tmps2);
3520 SETi( result >= 0 );
3527 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
3538 char buf[MAXPATHLEN];
3541 #ifndef INCOMPLETE_TAINTS
3545 len = readlink(tmps, buf, sizeof(buf) - 1);
3553 RETSETUNDEF; /* just pretend it's a normal file */
3557 #if !defined(HAS_MKDIR) || !defined(HAS_RMDIR)
3559 S_dooneliner(pTHX_ const char *cmd, const char *filename)
3561 char * const save_filename = filename;
3567 Newx(cmdline, strlen(cmd) + (strlen(filename) * 2) + 10, char);
3568 strcpy(cmdline, cmd);
3569 strcat(cmdline, " ");
3570 for (s = cmdline + strlen(cmdline); *filename; ) {
3575 myfp = PerlProc_popen(cmdline, "r");
3579 SV * const tmpsv = sv_newmortal();
3580 /* Need to save/restore 'PL_rs' ?? */
3581 s = sv_gets(tmpsv, myfp, 0);
3582 (void)PerlProc_pclose(myfp);
3586 #ifdef HAS_SYS_ERRLIST
3591 /* you don't see this */
3592 const char * const errmsg =
3593 #ifdef HAS_SYS_ERRLIST
3601 if (instr(s, errmsg)) {
3608 #define EACCES EPERM
3610 if (instr(s, "cannot make"))
3611 SETERRNO(EEXIST,RMS_FEX);
3612 else if (instr(s, "existing file"))
3613 SETERRNO(EEXIST,RMS_FEX);
3614 else if (instr(s, "ile exists"))
3615 SETERRNO(EEXIST,RMS_FEX);
3616 else if (instr(s, "non-exist"))
3617 SETERRNO(ENOENT,RMS_FNF);
3618 else if (instr(s, "does not exist"))
3619 SETERRNO(ENOENT,RMS_FNF);
3620 else if (instr(s, "not empty"))
3621 SETERRNO(EBUSY,SS_DEVOFFLINE);
3622 else if (instr(s, "cannot access"))
3623 SETERRNO(EACCES,RMS_PRV);
3625 SETERRNO(EPERM,RMS_PRV);
3628 else { /* some mkdirs return no failure indication */
3629 anum = (PerlLIO_stat(save_filename, &PL_statbuf) >= 0);
3630 if (PL_op->op_type == OP_RMDIR)
3635 SETERRNO(EACCES,RMS_PRV); /* a guess */
3644 /* This macro removes trailing slashes from a directory name.
3645 * Different operating and file systems take differently to
3646 * trailing slashes. According to POSIX 1003.1 1996 Edition
3647 * any number of trailing slashes should be allowed.
3648 * Thusly we snip them away so that even non-conforming
3649 * systems are happy.
3650 * We should probably do this "filtering" for all
3651 * the functions that expect (potentially) directory names:
3652 * -d, chdir(), chmod(), chown(), chroot(), fcntl()?,
3653 * (mkdir()), opendir(), rename(), rmdir(), stat(). --jhi */
3655 #define TRIMSLASHES(tmps,len,copy) (tmps) = SvPV_const(TOPs, (len)); \
3656 if ((len) > 1 && (tmps)[(len)-1] == '/') { \
3659 } while ((len) > 1 && (tmps)[(len)-1] == '/'); \
3660 (tmps) = savepvn((tmps), (len)); \
3670 const int mode = (MAXARG > 1) ? POPi : 0777;
3672 TRIMSLASHES(tmps,len,copy);
3674 TAINT_PROPER("mkdir");
3676 SETi( PerlDir_mkdir(tmps, mode) >= 0 );
3680 SETi( dooneliner("mkdir", tmps) );
3681 oldumask = PerlLIO_umask(0);
3682 PerlLIO_umask(oldumask);
3683 PerlLIO_chmod(tmps, (mode & ~oldumask) & 0777);
3698 TRIMSLASHES(tmps,len,copy);
3699 TAINT_PROPER("rmdir");
3701 SETi( PerlDir_rmdir(tmps) >= 0 );
3703 SETi( dooneliner("rmdir", tmps) );
3710 /* Directory calls. */
3714 #if defined(Direntry_t) && defined(HAS_READDIR)
3716 const char * const dirname = POPpconstx;
3717 GV * const gv = (GV*)POPs;
3718 register IO * const io = GvIOn(gv);
3724 PerlDir_close(IoDIRP(io));
3725 if (!(IoDIRP(io) = PerlDir_open(dirname)))
3731 SETERRNO(EBADF,RMS_DIR);
3734 DIE(aTHX_ PL_no_dir_func, "opendir");
3740 #if !defined(Direntry_t) || !defined(HAS_READDIR)
3741 DIE(aTHX_ PL_no_dir_func, "readdir");
3743 #if !defined(I_DIRENT) && !defined(VMS)
3744 Direntry_t *readdir (DIR *);
3750 const I32 gimme = GIMME;
3751 GV * const gv = (GV *)POPs;
3752 register const Direntry_t *dp;
3753 register IO * const io = GvIOn(gv);
3755 if (!io || !IoDIRP(io)) {
3756 if(ckWARN(WARN_IO)) {
3757 Perl_warner(aTHX_ packWARN(WARN_IO),
3758 "readdir() attempted on invalid dirhandle %s", GvENAME(gv));
3764 dp = (Direntry_t *)PerlDir_read(IoDIRP(io));
3768 sv = newSVpvn(dp->d_name, dp->d_namlen);
3770 sv = newSVpv(dp->d_name, 0);
3772 #ifndef INCOMPLETE_TAINTS
3773 if (!(IoFLAGS(io) & IOf_UNTAINT))
3776 XPUSHs(sv_2mortal(sv));
3777 } while (gimme == G_ARRAY);
3779 if (!dp && gimme != G_ARRAY)
3786 SETERRNO(EBADF,RMS_ISI);
3787 if (GIMME == G_ARRAY)
3796 #if defined(HAS_TELLDIR) || defined(telldir)
3798 /* XXX does _anyone_ need this? --AD 2/20/1998 */
3799 /* XXX netbsd still seemed to.
3800 XXX HAS_TELLDIR_PROTO is new style, NEED_TELLDIR_PROTO is old style.
3801 --JHI 1999-Feb-02 */
3802 # if !defined(HAS_TELLDIR_PROTO) || defined(NEED_TELLDIR_PROTO)
3803 long telldir (DIR *);
3805 GV * const gv = (GV*)POPs;
3806 register IO * const io = GvIOn(gv);
3808 if (!io || !IoDIRP(io)) {
3809 if(ckWARN(WARN_IO)) {
3810 Perl_warner(aTHX_ packWARN(WARN_IO),
3811 "telldir() attempted on invalid dirhandle %s", GvENAME(gv));
3816 PUSHi( PerlDir_tell(IoDIRP(io)) );
3820 SETERRNO(EBADF,RMS_ISI);
3823 DIE(aTHX_ PL_no_dir_func, "telldir");
3829 #if defined(HAS_SEEKDIR) || defined(seekdir)
3831 const long along = POPl;
3832 GV * const gv = (GV*)POPs;
3833 register IO * const io = GvIOn(gv);
3835 if (!io || !IoDIRP(io)) {
3836 if(ckWARN(WARN_IO)) {
3837 Perl_warner(aTHX_ packWARN(WARN_IO),
3838 "seekdir() attempted on invalid dirhandle %s", GvENAME(gv));
3842 (void)PerlDir_seek(IoDIRP(io), along);
3847 SETERRNO(EBADF,RMS_ISI);
3850 DIE(aTHX_ PL_no_dir_func, "seekdir");
3856 #if defined(HAS_REWINDDIR) || defined(rewinddir)
3858 GV * const gv = (GV*)POPs;
3859 register IO * const io = GvIOn(gv);
3861 if (!io || !IoDIRP(io)) {
3862 if(ckWARN(WARN_IO)) {
3863 Perl_warner(aTHX_ packWARN(WARN_IO),
3864 "rewinddir() attempted on invalid dirhandle %s", GvENAME(gv));
3868 (void)PerlDir_rewind(IoDIRP(io));
3872 SETERRNO(EBADF,RMS_ISI);
3875 DIE(aTHX_ PL_no_dir_func, "rewinddir");
3881 #if defined(Direntry_t) && defined(HAS_READDIR)
3883 GV * const gv = (GV*)POPs;
3884 register IO * const io = GvIOn(gv);
3886 if (!io || !IoDIRP(io)) {
3887 if(ckWARN(WARN_IO)) {
3888 Perl_warner(aTHX_ packWARN(WARN_IO),
3889 "closedir() attempted on invalid dirhandle %s", GvENAME(gv));
3893 #ifdef VOID_CLOSEDIR
3894 PerlDir_close(IoDIRP(io));
3896 if (PerlDir_close(IoDIRP(io)) < 0) {
3897 IoDIRP(io) = 0; /* Don't try to close again--coredumps on SysV */
3906 SETERRNO(EBADF,RMS_IFI);
3909 DIE(aTHX_ PL_no_dir_func, "closedir");
3913 /* Process control. */
3922 PERL_FLUSHALL_FOR_CHILD;
3923 childpid = PerlProc_fork();
3927 GV * const tmpgv = gv_fetchpvs("$", GV_ADD|GV_NOTQUAL, SVt_PV);
3929 SvREADONLY_off(GvSV(tmpgv));
3930 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3931 SvREADONLY_on(GvSV(tmpgv));
3933 #ifdef THREADS_HAVE_PIDS
3934 PL_ppid = (IV)getppid();
3936 #ifdef PERL_USES_PL_PIDSTATUS
3937 hv_clear(PL_pidstatus); /* no kids, so don't wait for 'em */
3943 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
3948 PERL_FLUSHALL_FOR_CHILD;
3949 childpid = PerlProc_fork();
3955 DIE(aTHX_ PL_no_func, "fork");
3962 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
3967 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
3968 childpid = wait4pid(-1, &argflags, 0);
3970 while ((childpid = wait4pid(-1, &argflags, 0)) == -1 &&
3975 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
3976 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
3977 STATUS_NATIVE_CHILD_SET((childpid && childpid != -1) ? argflags : -1);
3979 STATUS_NATIVE_CHILD_SET((childpid > 0) ? argflags : -1);
3984 DIE(aTHX_ PL_no_func, "wait");
3990 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
3992 const int optype = POPi;
3993 const Pid_t pid = TOPi;
3997 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
3998 result = wait4pid(pid, &argflags, optype);
4000 while ((result = wait4pid(pid, &argflags, optype)) == -1 &&
4005 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4006 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
4007 STATUS_NATIVE_CHILD_SET((result && result != -1) ? argflags : -1);
4009 STATUS_NATIVE_CHILD_SET((result > 0) ? argflags : -1);
4014 DIE(aTHX_ PL_no_func, "waitpid");
4020 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
4026 while (++MARK <= SP) {
4027 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
4032 TAINT_PROPER("system");
4034 PERL_FLUSHALL_FOR_CHILD;
4035 #if (defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(OS2) || defined(PERL_MICRO)
4041 if (PerlProc_pipe(pp) >= 0)
4043 while ((childpid = PerlProc_fork()) == -1) {
4044 if (errno != EAGAIN) {
4049 PerlLIO_close(pp[0]);
4050 PerlLIO_close(pp[1]);
4057 Sigsave_t ihand,qhand; /* place to save signals during system() */
4061 PerlLIO_close(pp[1]);
4063 rsignal_save(SIGINT, (Sighandler_t) SIG_IGN, &ihand);
4064 rsignal_save(SIGQUIT, (Sighandler_t) SIG_IGN, &qhand);
4067 result = wait4pid(childpid, &status, 0);
4068 } while (result == -1 && errno == EINTR);
4070 (void)rsignal_restore(SIGINT, &ihand);
4071 (void)rsignal_restore(SIGQUIT, &qhand);
4073 STATUS_NATIVE_CHILD_SET(result == -1 ? -1 : status);
4074 do_execfree(); /* free any memory child malloced on fork */
4081 while (n < sizeof(int)) {
4082 n1 = PerlLIO_read(pp[0],
4083 (void*)(((char*)&errkid)+n),
4089 PerlLIO_close(pp[0]);
4090 if (n) { /* Error */
4091 if (n != sizeof(int))
4092 DIE(aTHX_ "panic: kid popen errno read");
4093 errno = errkid; /* Propagate errno from kid */
4094 STATUS_NATIVE_CHILD_SET(-1);
4097 XPUSHi(STATUS_CURRENT);
4101 PerlLIO_close(pp[0]);
4102 #if defined(HAS_FCNTL) && defined(F_SETFD)
4103 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
4106 if (PL_op->op_flags & OPf_STACKED) {
4107 SV * const really = *++MARK;
4108 value = (I32)do_aexec5(really, MARK, SP, pp[1], did_pipes);
4110 else if (SP - MARK != 1)
4111 value = (I32)do_aexec5(NULL, MARK, SP, pp[1], did_pipes);
4113 value = (I32)do_exec3(SvPVx_nolen(sv_mortalcopy(*SP)), pp[1], did_pipes);
4117 #else /* ! FORK or VMS or OS/2 */
4120 if (PL_op->op_flags & OPf_STACKED) {
4121 SV * const really = *++MARK;
4122 # if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__)
4123 value = (I32)do_aspawn(really, MARK, SP);
4125 value = (I32)do_aspawn(really, (void **)MARK, (void **)SP);
4128 else if (SP - MARK != 1) {
4129 # if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__)
4130 value = (I32)do_aspawn(NULL, MARK, SP);
4132 value = (I32)do_aspawn(NULL, (void **)MARK, (void **)SP);
4136 value = (I32)do_spawn(SvPVx_nolen(sv_mortalcopy(*SP)));
4138 if (PL_statusvalue == -1) /* hint that value must be returned as is */
4140 STATUS_NATIVE_CHILD_SET(value);
4143 XPUSHi(result ? value : STATUS_CURRENT);
4144 #endif /* !FORK or VMS */
4150 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
4155 while (++MARK <= SP) {
4156 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
4161 TAINT_PROPER("exec");
4163 PERL_FLUSHALL_FOR_CHILD;
4164 if (PL_op->op_flags & OPf_STACKED) {
4165 SV * const really = *++MARK;
4166 value = (I32)do_aexec(really, MARK, SP);
4168 else if (SP - MARK != 1)
4170 value = (I32)vms_do_aexec(NULL, MARK, SP);
4174 (void ) do_aspawn(NULL, MARK, SP);
4178 value = (I32)do_aexec(NULL, MARK, SP);
4183 value = (I32)vms_do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
4186 (void) do_spawn(SvPVx_nolen(sv_mortalcopy(*SP)));
4189 value = (I32)do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
4203 # ifdef THREADS_HAVE_PIDS
4204 if (PL_ppid != 1 && getppid() == 1)
4205 /* maybe the parent process has died. Refresh ppid cache */
4209 XPUSHi( getppid() );
4213 DIE(aTHX_ PL_no_func, "getppid");
4222 const Pid_t pid = (MAXARG < 1) ? 0 : SvIVx(POPs);
4225 pgrp = (I32)BSD_GETPGRP(pid);
4227 if (pid != 0 && pid != PerlProc_getpid())
4228 DIE(aTHX_ "POSIX getpgrp can't take an argument");
4234 DIE(aTHX_ PL_no_func, "getpgrp()");
4253 TAINT_PROPER("setpgrp");
4255 SETi( BSD_SETPGRP(pid, pgrp) >= 0 );
4257 if ((pgrp != 0 && pgrp != PerlProc_getpid())
4258 || (pid != 0 && pid != PerlProc_getpid()))
4260 DIE(aTHX_ "setpgrp can't take arguments");
4262 SETi( setpgrp() >= 0 );
4263 #endif /* USE_BSDPGRP */
4266 DIE(aTHX_ PL_no_func, "setpgrp()");
4272 #ifdef HAS_GETPRIORITY
4274 const int who = POPi;
4275 const int which = TOPi;
4276 SETi( getpriority(which, who) );
4279 DIE(aTHX_ PL_no_func, "getpriority()");
4285 #ifdef HAS_SETPRIORITY
4287 const int niceval = POPi;
4288 const int who = POPi;
4289 const int which = TOPi;
4290 TAINT_PROPER("setpriority");
4291 SETi( setpriority(which, who, niceval) >= 0 );
4294 DIE(aTHX_ PL_no_func, "setpriority()");
4304 XPUSHn( time(NULL) );
4306 XPUSHi( time(NULL) );
4318 (void)PerlProc_times(&PL_timesbuf);
4320 (void)PerlProc_times((tbuffer_t *)&PL_timesbuf); /* time.h uses different name for */
4321 /* struct tms, though same data */
4325 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_utime)/(NV)PL_clocktick)));
4326 if (GIMME == G_ARRAY) {
4327 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_stime)/(NV)PL_clocktick)));
4328 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_cutime)/(NV)PL_clocktick)));
4329 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_cstime)/(NV)PL_clocktick)));
4335 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4337 if (GIMME == G_ARRAY) {
4338 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4339 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4340 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4344 DIE(aTHX_ "times not implemented");
4346 #endif /* HAS_TIMES */
4349 #ifdef LOCALTIME_EDGECASE_BROKEN
4350 static struct tm *S_my_localtime (pTHX_ Time_t *tp)
4355 /* No workarounds in the valid range */
4356 if (!tp || *tp < 0x7fff573f || *tp >= 0x80000000)
4357 return (localtime (tp));
4359 /* This edge case is to workaround the undefined behaviour, where the
4360 * TIMEZONE makes the time go beyond the defined range.
4361 * gmtime (0x7fffffff) => 2038-01-19 03:14:07
4362 * If there is a negative offset in TZ, like MET-1METDST, some broken
4363 * implementations of localtime () (like AIX 5.2) barf with bogus
4365 * 0x7fffffff gmtime 2038-01-19 03:14:07
4366 * 0x7fffffff localtime 1901-12-13 21:45:51
4367 * 0x7fffffff mylocaltime 2038-01-19 04:14:07
4368 * 0x3c19137f gmtime 2001-12-13 20:45:51
4369 * 0x3c19137f localtime 2001-12-13 21:45:51
4370 * 0x3c19137f mylocaltime 2001-12-13 21:45:51
4371 * Given that legal timezones are typically between GMT-12 and GMT+12
4372 * we turn back the clock 23 hours before calling the localtime
4373 * function, and add those to the return value. This will never cause
4374 * day wrapping problems, since the edge case is Tue Jan *19*
4376 T = *tp - 82800; /* 23 hour. allows up to GMT-23 */
4379 if (P->tm_hour >= 24) {
4381 P->tm_mday++; /* 18 -> 19 */
4382 P->tm_wday++; /* Mon -> Tue */
4383 P->tm_yday++; /* 18 -> 19 */
4386 } /* S_my_localtime */
4394 const struct tm *tmbuf;
4395 static const char * const dayname[] =
4396 {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
4397 static const char * const monname[] =
4398 {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
4399 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
4405 when = (Time_t)SvNVx(POPs);
4407 when = (Time_t)SvIVx(POPs);
4410 if (PL_op->op_type == OP_LOCALTIME)
4411 #ifdef LOCALTIME_EDGECASE_BROKEN
4412 tmbuf = S_my_localtime(aTHX_ &when);
4414 tmbuf = localtime(&when);
4417 tmbuf = gmtime(&when);
4419 if (GIMME != G_ARRAY) {
4425 tsv = Perl_newSVpvf(aTHX_ "%s %s %2d %02d:%02d:%02d %d",
4426 dayname[tmbuf->tm_wday],
4427 monname[tmbuf->tm_mon],
4432 tmbuf->tm_year + 1900);
4433 PUSHs(sv_2mortal(tsv));
4438 PUSHs(sv_2mortal(newSViv(tmbuf->tm_sec)));
4439 PUSHs(sv_2mortal(newSViv(tmbuf->tm_min)));
4440 PUSHs(sv_2mortal(newSViv(tmbuf->tm_hour)));
4441 PUSHs(sv_2mortal(newSViv(tmbuf->tm_mday)));
4442 PUSHs(sv_2mortal(newSViv(tmbuf->tm_mon)));
4443 PUSHs(sv_2mortal(newSViv(tmbuf->tm_year)));
4444 PUSHs(sv_2mortal(newSViv(tmbuf->tm_wday)));
4445 PUSHs(sv_2mortal(newSViv(tmbuf->tm_yday)));
4446 PUSHs(sv_2mortal(newSViv(tmbuf->tm_isdst)));
4457 anum = alarm((unsigned int)anum);
4464 DIE(aTHX_ PL_no_func, "alarm");
4475 (void)time(&lasttime);
4480 PerlProc_sleep((unsigned int)duration);
4483 XPUSHi(when - lasttime);
4487 /* Shared memory. */
4488 /* Merged with some message passing. */
4492 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4493 dVAR; dSP; dMARK; dTARGET;
4494 const int op_type = PL_op->op_type;
4499 value = (I32)(do_msgsnd(MARK, SP) >= 0);
4502 value = (I32)(do_msgrcv(MARK, SP) >= 0);
4505 value = (I32)(do_semop(MARK, SP) >= 0);
4508 value = (I32)(do_shmio(op_type, MARK, SP) >= 0);
4524 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4525 dVAR; dSP; dMARK; dTARGET;
4526 const int anum = do_ipcget(PL_op->op_type, MARK, SP);
4533 DIE(aTHX_ "System V IPC is not implemented on this machine");
4539 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4540 dVAR; dSP; dMARK; dTARGET;
4541 const int anum = do_ipcctl(PL_op->op_type, MARK, SP);
4549 PUSHp(zero_but_true, ZBTLEN);
4557 /* I can't const this further without getting warnings about the types of
4558 various arrays passed in from structures. */
4560 S_space_join_names_mortal(pTHX_ char *const *array)
4564 if (array && *array) {
4565 target = sv_2mortal(newSVpvs(""));
4567 sv_catpv(target, *array);
4570 sv_catpvs(target, " ");
4573 target = sv_mortalcopy(&PL_sv_no);
4578 /* Get system info. */
4582 #if defined(HAS_GETHOSTBYNAME) || defined(HAS_GETHOSTBYADDR) || defined(HAS_GETHOSTENT)
4584 I32 which = PL_op->op_type;
4585 register char **elem;
4587 #ifndef HAS_GETHOST_PROTOS /* XXX Do we need individual probes? */
4588 struct hostent *gethostbyaddr(Netdb_host_t, Netdb_hlen_t, int);
4589 struct hostent *gethostbyname(Netdb_name_t);
4590 struct hostent *gethostent(void);
4592 struct hostent *hent;
4596 if (which == OP_GHBYNAME) {
4597 #ifdef HAS_GETHOSTBYNAME
4598 const char* const name = POPpbytex;
4599 hent = PerlSock_gethostbyname(name);
4601 DIE(aTHX_ PL_no_sock_func, "gethostbyname");
4604 else if (which == OP_GHBYADDR) {
4605 #ifdef HAS_GETHOSTBYADDR
4606 const int addrtype = POPi;
4607 SV * const addrsv = POPs;
4609 Netdb_host_t addr = (Netdb_host_t) SvPVbyte(addrsv, addrlen);
4611 hent = PerlSock_gethostbyaddr(addr, (Netdb_hlen_t) addrlen, addrtype);
4613 DIE(aTHX_ PL_no_sock_func, "gethostbyaddr");
4617 #ifdef HAS_GETHOSTENT
4618 hent = PerlSock_gethostent();
4620 DIE(aTHX_ PL_no_sock_func, "gethostent");
4623 #ifdef HOST_NOT_FOUND
4625 #ifdef USE_REENTRANT_API
4626 # ifdef USE_GETHOSTENT_ERRNO
4627 h_errno = PL_reentrant_buffer->_gethostent_errno;
4630 STATUS_UNIX_SET(h_errno);
4634 if (GIMME != G_ARRAY) {
4635 PUSHs(sv = sv_newmortal());
4637 if (which == OP_GHBYNAME) {
4639 sv_setpvn(sv, hent->h_addr, hent->h_length);
4642 sv_setpv(sv, (char*)hent->h_name);
4648 PUSHs(sv_2mortal(newSVpv((char*)hent->h_name, 0)));
4649 PUSHs(space_join_names_mortal(hent->h_aliases));
4650 PUSHs(sv_2mortal(newSViv((IV)hent->h_addrtype)));
4651 len = hent->h_length;
4652 PUSHs(sv_2mortal(newSViv((IV)len)));
4654 for (elem = hent->h_addr_list; elem && *elem; elem++) {
4655 XPUSHs(sv_2mortal(newSVpvn(*elem, len)));
4659 PUSHs(newSVpvn(hent->h_addr, len));
4661 PUSHs(sv_mortalcopy(&PL_sv_no));
4666 DIE(aTHX_ PL_no_sock_func, "gethostent");
4672 #if defined(HAS_GETNETBYNAME) || defined(HAS_GETNETBYADDR) || defined(HAS_GETNETENT)
4674 I32 which = PL_op->op_type;
4676 #ifndef HAS_GETNET_PROTOS /* XXX Do we need individual probes? */
4677 struct netent *getnetbyaddr(Netdb_net_t, int);
4678 struct netent *getnetbyname(Netdb_name_t);
4679 struct netent *getnetent(void);
4681 struct netent *nent;
4683 if (which == OP_GNBYNAME){
4684 #ifdef HAS_GETNETBYNAME
4685 const char * const name = POPpbytex;
4686 nent = PerlSock_getnetbyname(name);
4688 DIE(aTHX_ PL_no_sock_func, "getnetbyname");
4691 else if (which == OP_GNBYADDR) {
4692 #ifdef HAS_GETNETBYADDR
4693 const int addrtype = POPi;
4694 const Netdb_net_t addr = (Netdb_net_t) (U32)POPu;
4695 nent = PerlSock_getnetbyaddr(addr, addrtype);
4697 DIE(aTHX_ PL_no_sock_func, "getnetbyaddr");
4701 #ifdef HAS_GETNETENT
4702 nent = PerlSock_getnetent();
4704 DIE(aTHX_ PL_no_sock_func, "getnetent");
4707 #ifdef HOST_NOT_FOUND
4709 #ifdef USE_REENTRANT_API
4710 # ifdef USE_GETNETENT_ERRNO
4711 h_errno = PL_reentrant_buffer->_getnetent_errno;
4714 STATUS_UNIX_SET(h_errno);
4719 if (GIMME != G_ARRAY) {
4720 PUSHs(sv = sv_newmortal());
4722 if (which == OP_GNBYNAME)
4723 sv_setiv(sv, (IV)nent->n_net);
4725 sv_setpv(sv, nent->n_name);
4731 PUSHs(sv_2mortal(newSVpv(nent->n_name, 0)));
4732 PUSHs(space_join_names_mortal(nent->n_aliases));
4733 PUSHs(sv_2mortal(newSViv((IV)nent->n_addrtype)));
4734 PUSHs(sv_2mortal(newSViv((IV)nent->n_net)));
4739 DIE(aTHX_ PL_no_sock_func, "getnetent");
4745 #if defined(HAS_GETPROTOBYNAME) || defined(HAS_GETPROTOBYNUMBER) || defined(HAS_GETPROTOENT)
4747 I32 which = PL_op->op_type;
4749 #ifndef HAS_GETPROTO_PROTOS /* XXX Do we need individual probes? */
4750 struct protoent *getprotobyname(Netdb_name_t);
4751 struct protoent *getprotobynumber(int);
4752 struct protoent *getprotoent(void);
4754 struct protoent *pent;
4756 if (which == OP_GPBYNAME) {
4757 #ifdef HAS_GETPROTOBYNAME
4758 const char* const name = POPpbytex;
4759 pent = PerlSock_getprotobyname(name);
4761 DIE(aTHX_ PL_no_sock_func, "getprotobyname");
4764 else if (which == OP_GPBYNUMBER) {
4765 #ifdef HAS_GETPROTOBYNUMBER
4766 const int number = POPi;
4767 pent = PerlSock_getprotobynumber(number);
4769 DIE(aTHX_ PL_no_sock_func, "getprotobynumber");
4773 #ifdef HAS_GETPROTOENT
4774 pent = PerlSock_getprotoent();
4776 DIE(aTHX_ PL_no_sock_func, "getprotoent");
4780 if (GIMME != G_ARRAY) {
4781 PUSHs(sv = sv_newmortal());
4783 if (which == OP_GPBYNAME)
4784 sv_setiv(sv, (IV)pent->p_proto);
4786 sv_setpv(sv, pent->p_name);
4792 PUSHs(sv_2mortal(newSVpv(pent->p_name, 0)));
4793 PUSHs(space_join_names_mortal(pent->p_aliases));
4794 PUSHs(sv_2mortal(newSViv((IV)pent->p_proto)));
4799 DIE(aTHX_ PL_no_sock_func, "getprotoent");
4805 #if defined(HAS_GETSERVBYNAME) || defined(HAS_GETSERVBYPORT) || defined(HAS_GETSERVENT)
4807 I32 which = PL_op->op_type;
4809 #ifndef HAS_GETSERV_PROTOS /* XXX Do we need individual probes? */
4810 struct servent *getservbyname(Netdb_name_t, Netdb_name_t);
4811 struct servent *getservbyport(int, Netdb_name_t);
4812 struct servent *getservent(void);
4814 struct servent *sent;
4816 if (which == OP_GSBYNAME) {
4817 #ifdef HAS_GETSERVBYNAME
4818 const char * const proto = POPpbytex;
4819 const char * const name = POPpbytex;
4820 sent = PerlSock_getservbyname(name, (proto && !*proto) ? NULL : proto);
4822 DIE(aTHX_ PL_no_sock_func, "getservbyname");
4825 else if (which == OP_GSBYPORT) {
4826 #ifdef HAS_GETSERVBYPORT
4827 const char * const proto = POPpbytex;
4828 unsigned short port = (unsigned short)POPu;
4830 port = PerlSock_htons(port);
4832 sent = PerlSock_getservbyport(port, (proto && !*proto) ? NULL : proto);
4834 DIE(aTHX_ PL_no_sock_func, "getservbyport");
4838 #ifdef HAS_GETSERVENT
4839 sent = PerlSock_getservent();
4841 DIE(aTHX_ PL_no_sock_func, "getservent");
4845 if (GIMME != G_ARRAY) {
4846 PUSHs(sv = sv_newmortal());
4848 if (which == OP_GSBYNAME) {
4850 sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
4852 sv_setiv(sv, (IV)(sent->s_port));
4856 sv_setpv(sv, sent->s_name);
4862 PUSHs(sv_2mortal(newSVpv(sent->s_name, 0)));
4863 PUSHs(space_join_names_mortal(sent->s_aliases));
4865 PUSHs(sv_2mortal(newSViv((IV)PerlSock_ntohs(sent->s_port))));
4867 PUSHs(sv_2mortal(newSViv((IV)(sent->s_port))));
4869 PUSHs(sv_2mortal(newSVpv(sent->s_proto, 0)));
4874 DIE(aTHX_ PL_no_sock_func, "getservent");
4880 #ifdef HAS_SETHOSTENT
4882 PerlSock_sethostent(TOPi);
4885 DIE(aTHX_ PL_no_sock_func, "sethostent");
4891 #ifdef HAS_SETNETENT
4893 PerlSock_setnetent(TOPi);
4896 DIE(aTHX_ PL_no_sock_func, "setnetent");
4902 #ifdef HAS_SETPROTOENT
4904 PerlSock_setprotoent(TOPi);
4907 DIE(aTHX_ PL_no_sock_func, "setprotoent");
4913 #ifdef HAS_SETSERVENT
4915 PerlSock_setservent(TOPi);
4918 DIE(aTHX_ PL_no_sock_func, "setservent");
4924 #ifdef HAS_ENDHOSTENT
4926 PerlSock_endhostent();
4930 DIE(aTHX_ PL_no_sock_func, "endhostent");
4936 #ifdef HAS_ENDNETENT
4938 PerlSock_endnetent();
4942 DIE(aTHX_ PL_no_sock_func, "endnetent");
4948 #ifdef HAS_ENDPROTOENT
4950 PerlSock_endprotoent();
4954 DIE(aTHX_ PL_no_sock_func, "endprotoent");
4960 #ifdef HAS_ENDSERVENT
4962 PerlSock_endservent();
4966 DIE(aTHX_ PL_no_sock_func, "endservent");
4974 I32 which = PL_op->op_type;
4976 struct passwd *pwent = NULL;
4978 * We currently support only the SysV getsp* shadow password interface.
4979 * The interface is declared in <shadow.h> and often one needs to link
4980 * with -lsecurity or some such.
4981 * This interface is used at least by Solaris, HP-UX, IRIX, and Linux.
4984 * AIX getpwnam() is clever enough to return the encrypted password
4985 * only if the caller (euid?) is root.
4987 * There are at least three other shadow password APIs. Many platforms
4988 * seem to contain more than one interface for accessing the shadow
4989 * password databases, possibly for compatibility reasons.
4990 * The getsp*() is by far he simplest one, the other two interfaces
4991 * are much more complicated, but also very similar to each other.
4996 * struct pr_passwd *getprpw*();
4997 * The password is in
4998 * char getprpw*(...).ufld.fd_encrypt[]
4999 * Mention HAS_GETPRPWNAM here so that Configure probes for it.
5004 * struct es_passwd *getespw*();
5005 * The password is in
5006 * char *(getespw*(...).ufld.fd_encrypt)
5007 * Mention HAS_GETESPWNAM here so that Configure probes for it.
5010 * struct userpw *getuserpw();
5011 * The password is in
5012 * char *(getuserpw(...)).spw_upw_passwd
5013 * (but the de facto standard getpwnam() should work okay)
5015 * Mention I_PROT here so that Configure probes for it.
5017 * In HP-UX for getprpw*() the manual page claims that one should include
5018 * <hpsecurity.h> instead of <sys/security.h>, but that is not needed
5019 * if one includes <shadow.h> as that includes <hpsecurity.h>,
5020 * and pp_sys.c already includes <shadow.h> if there is such.
5022 * Note that <sys/security.h> is already probed for, but currently
5023 * it is only included in special cases.
5025 * In Digital UNIX/Tru64 if using the getespw*() (which seems to be
5026 * be preferred interface, even though also the getprpw*() interface
5027 * is available) one needs to link with -lsecurity -ldb -laud -lm.
5028 * One also needs to call set_auth_parameters() in main() before
5029 * doing anything else, whether one is using getespw*() or getprpw*().
5031 * Note that accessing the shadow databases can be magnitudes
5032 * slower than accessing the standard databases.
5037 # if defined(__CYGWIN__) && defined(USE_REENTRANT_API)
5038 /* Cygwin 1.5.3-1 has buggy getpwnam_r() and getpwuid_r():
5039 * the pw_comment is left uninitialized. */
5040 PL_reentrant_buffer->_pwent_struct.pw_comment = NULL;
5046 const char* const name = POPpbytex;
5047 pwent = getpwnam(name);
5053 pwent = getpwuid(uid);
5057 # ifdef HAS_GETPWENT
5059 #ifdef POSIX_BC /* In some cases pw_passwd has invalid addresses */
5060 if (pwent) pwent = getpwnam(pwent->pw_name);
5063 DIE(aTHX_ PL_no_func, "getpwent");
5069 if (GIMME != G_ARRAY) {
5070 PUSHs(sv = sv_newmortal());
5072 if (which == OP_GPWNAM)
5073 # if Uid_t_sign <= 0
5074 sv_setiv(sv, (IV)pwent->pw_uid);
5076 sv_setuv(sv, (UV)pwent->pw_uid);
5079 sv_setpv(sv, pwent->pw_name);
5085 PUSHs(sv_2mortal(newSVpv(pwent->pw_name, 0)));
5087 PUSHs(sv = sv_2mortal(newSViv(0)));
5088 /* If we have getspnam(), we try to dig up the shadow
5089 * password. If we are underprivileged, the shadow
5090 * interface will set the errno to EACCES or similar,
5091 * and return a null pointer. If this happens, we will
5092 * use the dummy password (usually "*" or "x") from the
5093 * standard password database.
5095 * In theory we could skip the shadow call completely
5096 * if euid != 0 but in practice we cannot know which
5097 * security measures are guarding the shadow databases
5098 * on a random platform.
5100 * Resist the urge to use additional shadow interfaces.
5101 * Divert the urge to writing an extension instead.
5104 /* Some AIX setups falsely(?) detect some getspnam(), which
5105 * has a different API than the Solaris/IRIX one. */
5106 # if defined(HAS_GETSPNAM) && !defined(_AIX)
5108 const int saverrno = errno;
5109 const struct spwd * const spwent = getspnam(pwent->pw_name);
5110 /* Save and restore errno so that
5111 * underprivileged attempts seem
5112 * to have never made the unsccessful
5113 * attempt to retrieve the shadow password. */
5115 if (spwent && spwent->sp_pwdp)
5116 sv_setpv(sv, spwent->sp_pwdp);
5120 if (!SvPOK(sv)) /* Use the standard password, then. */
5121 sv_setpv(sv, pwent->pw_passwd);
5124 # ifndef INCOMPLETE_TAINTS
5125 /* passwd is tainted because user himself can diddle with it.
5126 * admittedly not much and in a very limited way, but nevertheless. */
5130 # if Uid_t_sign <= 0
5131 PUSHs(sv_2mortal(newSViv((IV)pwent->pw_uid)));
5133 PUSHs(sv_2mortal(newSVuv((UV)pwent->pw_uid)));
5136 # if Uid_t_sign <= 0
5137 PUSHs(sv_2mortal(newSViv((IV)pwent->pw_gid)));
5139 PUSHs(sv_2mortal(newSVuv((UV)pwent->pw_gid)));
5141 /* pw_change, pw_quota, and pw_age are mutually exclusive--
5142 * because of the poor interface of the Perl getpw*(),
5143 * not because there's some standard/convention saying so.
5144 * A better interface would have been to return a hash,
5145 * but we are accursed by our history, alas. --jhi. */
5147 PUSHs(sv_2mortal(newSViv((IV)pwent->pw_change)));
5150 PUSHs(sv_2mortal(newSViv((IV)pwent->pw_quota)));
5153 PUSHs(sv_2mortal(newSVpv(pwent->pw_age, 0)));
5155 /* I think that you can never get this compiled, but just in case. */
5156 PUSHs(sv_mortalcopy(&PL_sv_no));
5161 /* pw_class and pw_comment are mutually exclusive--.
5162 * see the above note for pw_change, pw_quota, and pw_age. */
5164 PUSHs(sv_2mortal(newSVpv(pwent->pw_class, 0)));
5167 PUSHs(sv_2mortal(newSVpv(pwent->pw_comment, 0)));
5169 /* I think that you can never get this compiled, but just in case. */
5170 PUSHs(sv_mortalcopy(&PL_sv_no));
5175 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_gecos, 0)));
5177 PUSHs(sv_mortalcopy(&PL_sv_no));
5179 # ifndef INCOMPLETE_TAINTS
5180 /* pw_gecos is tainted because user himself can diddle with it. */
5184 PUSHs(sv_2mortal(newSVpv(pwent->pw_dir, 0)));
5186 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_shell, 0)));
5187 # ifndef INCOMPLETE_TAINTS
5188 /* pw_shell is tainted because user himself can diddle with it. */
5193 PUSHs(sv_2mortal(newSViv((IV)pwent->pw_expire)));
5198 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5204 #if defined(HAS_PASSWD) && defined(HAS_SETPWENT)
5209 DIE(aTHX_ PL_no_func, "setpwent");
5215 #if defined(HAS_PASSWD) && defined(HAS_ENDPWENT)
5220 DIE(aTHX_ PL_no_func, "endpwent");
5228 const I32 which = PL_op->op_type;
5229 const struct group *grent;
5231 if (which == OP_GGRNAM) {
5232 const char* const name = POPpbytex;
5233 grent = (const struct group *)getgrnam(name);
5235 else if (which == OP_GGRGID) {
5236 const Gid_t gid = POPi;
5237 grent = (const struct group *)getgrgid(gid);
5241 grent = (struct group *)getgrent();
5243 DIE(aTHX_ PL_no_func, "getgrent");
5247 if (GIMME != G_ARRAY) {
5248 SV * const sv = sv_newmortal();
5252 if (which == OP_GGRNAM)
5253 sv_setiv(sv, (IV)grent->gr_gid);
5255 sv_setpv(sv, grent->gr_name);
5261 PUSHs(sv_2mortal(newSVpv(grent->gr_name, 0)));
5264 PUSHs(sv_2mortal(newSVpv(grent->gr_passwd, 0)));
5266 PUSHs(sv_mortalcopy(&PL_sv_no));
5269 PUSHs(sv_2mortal(newSViv((IV)grent->gr_gid)));
5271 #if !(defined(_CRAYMPP) && defined(USE_REENTRANT_API))
5272 /* In UNICOS/mk (_CRAYMPP) the multithreading
5273 * versions (getgrnam_r, getgrgid_r)
5274 * seem to return an illegal pointer
5275 * as the group members list, gr_mem.
5276 * getgrent() doesn't even have a _r version
5277 * but the gr_mem is poisonous anyway.
5278 * So yes, you cannot get the list of group
5279 * members if building multithreaded in UNICOS/mk. */
5280 PUSHs(space_join_names_mortal(grent->gr_mem));
5286 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5292 #if defined(HAS_GROUP) && defined(HAS_SETGRENT)
5297 DIE(aTHX_ PL_no_func, "setgrent");
5303 #if defined(HAS_GROUP) && defined(HAS_ENDGRENT)
5308 DIE(aTHX_ PL_no_func, "endgrent");
5318 if (!(tmps = PerlProc_getlogin()))
5320 PUSHp(tmps, strlen(tmps));
5323 DIE(aTHX_ PL_no_func, "getlogin");
5327 /* Miscellaneous. */
5332 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
5333 register I32 items = SP - MARK;
5334 unsigned long a[20];
5339 while (++MARK <= SP) {
5340 if (SvTAINTED(*MARK)) {
5346 TAINT_PROPER("syscall");
5349 /* This probably won't work on machines where sizeof(long) != sizeof(int)
5350 * or where sizeof(long) != sizeof(char*). But such machines will
5351 * not likely have syscall implemented either, so who cares?
5353 while (++MARK <= SP) {
5354 if (SvNIOK(*MARK) || !i)
5355 a[i++] = SvIV(*MARK);
5356 else if (*MARK == &PL_sv_undef)
5359 a[i++] = (unsigned long)SvPV_force_nolen(*MARK);
5365 DIE(aTHX_ "Too many args to syscall");
5367 DIE(aTHX_ "Too few args to syscall");
5369 retval = syscall(a[0]);
5372 retval = syscall(a[0],a[1]);
5375 retval = syscall(a[0],a[1],a[2]);
5378 retval = syscall(a[0],a[1],a[2],a[3]);
5381 retval = syscall(a[0],a[1],a[2],a[3],a[4]);
5384 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5]);
5387 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6]);
5390 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7]);
5394 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8]);
5397 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9]);
5400 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5404 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5408 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5412 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5413 a[10],a[11],a[12],a[13]);
5415 #endif /* atarist */
5421 DIE(aTHX_ PL_no_func, "syscall");
5425 #ifdef FCNTL_EMULATE_FLOCK
5427 /* XXX Emulate flock() with fcntl().
5428 What's really needed is a good file locking module.
5432 fcntl_emulate_flock(int fd, int operation)
5436 switch (operation & ~LOCK_NB) {
5438 flock.l_type = F_RDLCK;
5441 flock.l_type = F_WRLCK;
5444 flock.l_type = F_UNLCK;
5450 flock.l_whence = SEEK_SET;
5451 flock.l_start = flock.l_len = (Off_t)0;
5453 return fcntl(fd, (operation & LOCK_NB) ? F_SETLK : F_SETLKW, &flock);
5456 #endif /* FCNTL_EMULATE_FLOCK */
5458 #ifdef LOCKF_EMULATE_FLOCK
5460 /* XXX Emulate flock() with lockf(). This is just to increase
5461 portability of scripts. The calls are not completely
5462 interchangeable. What's really needed is a good file
5466 /* The lockf() constants might have been defined in <unistd.h>.
5467 Unfortunately, <unistd.h> causes troubles on some mixed
5468 (BSD/POSIX) systems, such as SunOS 4.1.3.
5470 Further, the lockf() constants aren't POSIX, so they might not be
5471 visible if we're compiling with _POSIX_SOURCE defined. Thus, we'll
5472 just stick in the SVID values and be done with it. Sigh.
5476 # define F_ULOCK 0 /* Unlock a previously locked region */
5479 # define F_LOCK 1 /* Lock a region for exclusive use */
5482 # define F_TLOCK 2 /* Test and lock a region for exclusive use */
5485 # define F_TEST 3 /* Test a region for other processes locks */
5489 lockf_emulate_flock(int fd, int operation)
5492 const int save_errno = errno;
5495 /* flock locks entire file so for lockf we need to do the same */
5496 pos = PerlLIO_lseek(fd, (Off_t)0, SEEK_CUR); /* get pos to restore later */
5497 if (pos > 0) /* is seekable and needs to be repositioned */
5498 if (PerlLIO_lseek(fd, (Off_t)0, SEEK_SET) < 0)
5499 pos = -1; /* seek failed, so don't seek back afterwards */
5502 switch (operation) {
5504 /* LOCK_SH - get a shared lock */
5506 /* LOCK_EX - get an exclusive lock */
5508 i = lockf (fd, F_LOCK, 0);
5511 /* LOCK_SH|LOCK_NB - get a non-blocking shared lock */
5512 case LOCK_SH|LOCK_NB:
5513 /* LOCK_EX|LOCK_NB - get a non-blocking exclusive lock */
5514 case LOCK_EX|LOCK_NB:
5515 i = lockf (fd, F_TLOCK, 0);
5517 if ((errno == EAGAIN) || (errno == EACCES))
5518 errno = EWOULDBLOCK;
5521 /* LOCK_UN - unlock (non-blocking is a no-op) */
5523 case LOCK_UN|LOCK_NB:
5524 i = lockf (fd, F_ULOCK, 0);
5527 /* Default - can't decipher operation */
5534 if (pos > 0) /* need to restore position of the handle */
5535 PerlLIO_lseek(fd, pos, SEEK_SET); /* ignore error here */
5540 #endif /* LOCKF_EMULATE_FLOCK */
5544 * c-indentation-style: bsd
5546 * indent-tabs-mode: t
5549 * ex: set ts=8 sts=4 sw=4 noet: