3 * Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
4 * 2004, 2005, 2006, 2007, 2008 by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
12 * But only a short way ahead its floor and the walls on either side were
13 * cloven by a great fissure, out of which the red glare came, now leaping
14 * up, now dying down into darkness; and all the while far below there was
15 * a rumour and a trouble as of great engines throbbing and labouring.
17 * [p.945 of _The Lord of the Rings_, VI/iii: "Mount Doom"]
20 /* This file contains system pp ("push/pop") functions that
21 * execute the opcodes that make up a perl program. A typical pp function
22 * expects to find its arguments on the stack, and usually pushes its
23 * results onto the stack, hence the 'pp' terminology. Each OP structure
24 * contains a pointer to the relevant pp_foo() function.
26 * By 'system', we mean ops which interact with the OS, such as pp_open().
30 #define PERL_IN_PP_SYS_C
36 /* Shadow password support for solaris - pdo@cs.umd.edu
37 * Not just Solaris: at least HP-UX, IRIX, Linux.
38 * The API is from SysV.
40 * There are at least two more shadow interfaces,
41 * see the comments in pp_gpwent().
45 /* There is a MAXINT coming from <shadow.h> <- <hpsecurity.h> <- <values.h>
46 * and another MAXINT from "perl.h" <- <sys/param.h>. */
53 # include <sys/wait.h>
57 # include <sys/resource.h>
66 # include <sys/select.h>
70 /* XXX Configure test needed.
71 h_errno might not be a simple 'int', especially for multi-threaded
72 applications, see "extern int errno in perl.h". Creating such
73 a test requires taking into account the differences between
74 compiling multithreaded and singlethreaded ($ccflags et al).
75 HOST_NOT_FOUND is typically defined in <netdb.h>.
77 #if defined(HOST_NOT_FOUND) && !defined(h_errno) && !defined(__CYGWIN__)
86 struct passwd *getpwnam (char *);
87 struct passwd *getpwuid (Uid_t);
92 struct passwd *getpwent (void);
93 #elif defined (VMS) && defined (my_getpwent)
94 struct passwd *Perl_my_getpwent (pTHX);
103 struct group *getgrnam (char *);
104 struct group *getgrgid (Gid_t);
108 struct group *getgrent (void);
114 # if defined(_MSC_VER) || defined(__MINGW32__)
115 # include <sys/utime.h>
122 # ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
125 # define my_chsize PerlLIO_chsize
128 # define my_chsize PerlLIO_chsize
130 I32 my_chsize(int fd, Off_t length);
136 #else /* no flock() */
138 /* fcntl.h might not have been included, even if it exists, because
139 the current Configure only sets I_FCNTL if it's needed to pick up
140 the *_OK constants. Make sure it has been included before testing
141 the fcntl() locking constants. */
142 # if defined(HAS_FCNTL) && !defined(I_FCNTL)
146 # if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
147 # define FLOCK fcntl_emulate_flock
148 # define FCNTL_EMULATE_FLOCK
149 # else /* no flock() or fcntl(F_SETLK,...) */
151 # define FLOCK lockf_emulate_flock
152 # define LOCKF_EMULATE_FLOCK
154 # endif /* no flock() or fcntl(F_SETLK,...) */
157 static int FLOCK (int, int);
160 * These are the flock() constants. Since this sytems doesn't have
161 * flock(), the values of the constants are probably not available.
175 # endif /* emulating flock() */
177 #endif /* no flock() */
180 static const char zero_but_true[ZBTLEN + 1] = "0 but true";
182 #if defined(I_SYS_ACCESS) && !defined(R_OK)
183 # include <sys/access.h>
186 #if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
187 # define FD_CLOEXEC 1 /* NeXT needs this */
193 /* Missing protos on LynxOS */
194 void sethostent(int);
195 void endhostent(void);
197 void endnetent(void);
198 void setprotoent(int);
199 void endprotoent(void);
200 void setservent(int);
201 void endservent(void);
204 #undef PERL_EFF_ACCESS /* EFFective uid/gid ACCESS */
206 /* F_OK unused: if stat() cannot find it... */
208 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
209 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
210 # define PERL_EFF_ACCESS(p,f) (access((p), (f) | EFF_ONLY_OK))
213 #if !defined(PERL_EFF_ACCESS) && defined(HAS_EACCESS)
214 # ifdef I_SYS_SECURITY
215 # include <sys/security.h>
219 # define PERL_EFF_ACCESS(p,f) (eaccess((p), (f), ACC_SELF))
222 # define PERL_EFF_ACCESS(p,f) (eaccess((p), (f)))
226 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESSX) && defined(ACC_SELF)
228 # define PERL_EFF_ACCESS(p,f) (accessx((p), (f), ACC_SELF))
232 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) \
233 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
234 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
237 S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
239 const Uid_t ruid = getuid();
240 const Uid_t euid = geteuid();
241 const Gid_t rgid = getgid();
242 const Gid_t egid = getegid();
245 #if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
246 Perl_croak(aTHX_ "switching effective uid is not implemented");
249 if (setreuid(euid, ruid))
252 if (setresuid(euid, ruid, (Uid_t)-1))
255 Perl_croak(aTHX_ "entering effective uid failed");
258 #if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
259 Perl_croak(aTHX_ "switching effective gid is not implemented");
262 if (setregid(egid, rgid))
265 if (setresgid(egid, rgid, (Gid_t)-1))
268 Perl_croak(aTHX_ "entering effective gid failed");
271 res = access(path, mode);
274 if (setreuid(ruid, euid))
277 if (setresuid(ruid, euid, (Uid_t)-1))
280 Perl_croak(aTHX_ "leaving effective uid failed");
283 if (setregid(rgid, egid))
286 if (setresgid(rgid, egid, (Gid_t)-1))
289 Perl_croak(aTHX_ "leaving effective gid failed");
293 # define PERL_EFF_ACCESS(p,f) (S_emulate_eaccess(aTHX_ (p), (f)))
300 const char * const tmps = POPpconstx;
301 const I32 gimme = GIMME_V;
302 const char *mode = "r";
305 if (PL_op->op_private & OPpOPEN_IN_RAW)
307 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
309 fp = PerlProc_popen(tmps, mode);
311 const char * const type = Perl_PerlIO_context_layers(aTHX_ NULL);
313 PerlIO_apply_layers(aTHX_ fp,mode,type);
315 if (gimme == G_VOID) {
317 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
320 else if (gimme == G_SCALAR) {
323 PL_rs = &PL_sv_undef;
324 sv_setpvs(TARG, ""); /* note that this preserves previous buffer */
325 while (sv_gets(TARG, fp, SvCUR(TARG)) != NULL)
333 SV * const sv = newSV(79);
334 if (sv_gets(sv, fp, 0) == NULL) {
339 if (SvLEN(sv) - SvCUR(sv) > 20) {
340 SvPV_shrink_to_cur(sv);
345 STATUS_NATIVE_CHILD_SET(PerlProc_pclose(fp));
346 TAINT; /* "I believe that this is not gratuitous!" */
349 STATUS_NATIVE_CHILD_SET(-1);
350 if (gimme == G_SCALAR)
361 tryAMAGICunTARGET(iter, -1);
363 /* Note that we only ever get here if File::Glob fails to load
364 * without at the same time croaking, for some reason, or if
365 * perl was built with PERL_EXTERNAL_GLOB */
372 * The external globbing program may use things we can't control,
373 * so for security reasons we must assume the worst.
376 taint_proper(PL_no_security, "glob");
380 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
381 PL_last_in_gv = MUTABLE_GV(*PL_stack_sp--);
383 SAVESPTR(PL_rs); /* This is not permanent, either. */
384 PL_rs = newSVpvs_flags("\000", SVs_TEMP);
387 *SvPVX(PL_rs) = '\n';
391 result = do_readline();
399 PL_last_in_gv = cGVOP_gv;
400 return do_readline();
411 do_join(TARG, &PL_sv_no, MARK, SP);
415 else if (SP == MARK) {
423 tmps = SvPV_const(tmpsv, len);
424 if ((!tmps || !len) && PL_errgv) {
425 SV * const error = ERRSV;
426 SvUPGRADE(error, SVt_PV);
427 if (SvPOK(error) && SvCUR(error))
428 sv_catpvs(error, "\t...caught");
430 tmps = SvPV_const(tmpsv, len);
433 tmpsv = newSVpvs_flags("Warning: something's wrong", SVs_TEMP);
435 Perl_warn(aTHX_ "%"SVf, SVfARG(tmpsv));
447 VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
449 if (SP - MARK != 1) {
451 do_join(TARG, &PL_sv_no, MARK, SP);
453 tmps = SvPV_const(tmpsv, len);
459 tmps = SvROK(tmpsv) ? (const char *)NULL : SvPV_const(tmpsv, len);
462 SV * const error = ERRSV;
463 SvUPGRADE(error, SVt_PV);
464 if (multiarg ? SvROK(error) : SvROK(tmpsv)) {
466 SvSetSV(error,tmpsv);
467 else if (sv_isobject(error)) {
468 HV * const stash = SvSTASH(SvRV(error));
469 GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
471 SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
472 SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
479 call_sv(MUTABLE_SV(GvCV(gv)),
480 G_SCALAR|G_EVAL|G_KEEPERR);
481 sv_setsv(error,*PL_stack_sp--);
487 if (SvPOK(error) && SvCUR(error))
488 sv_catpvs(error, "\t...propagated");
491 tmps = SvPV_const(tmpsv, len);
497 tmpsv = newSVpvs_flags("Died", SVs_TEMP);
499 DIE(aTHX_ "%"SVf, SVfARG(tmpsv));
515 GV * const gv = MUTABLE_GV(*++MARK);
518 DIE(aTHX_ PL_no_usym, "filehandle");
520 if ((io = GvIOp(gv))) {
522 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
524 if (IoDIRP(io) && ckWARN2(WARN_IO, WARN_DEPRECATED))
525 Perl_warner(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
526 "Opening dirhandle %s also as a file", GvENAME(gv));
528 mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
530 /* Method's args are same as ours ... */
531 /* ... except handle is replaced by the object */
532 *MARK-- = SvTIED_obj(MUTABLE_SV(io), mg);
536 call_method("OPEN", G_SCALAR);
550 tmps = SvPV_const(sv, len);
551 ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, NULL, MARK+1, (SP-MARK));
554 PUSHi( (I32)PL_forkprocess );
555 else if (PL_forkprocess == 0) /* we are a new child */
565 GV * const gv = (MAXARG == 0) ? PL_defoutgv : MUTABLE_GV(POPs);
568 IO * const io = GvIO(gv);
570 MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
573 XPUSHs(SvTIED_obj(MUTABLE_SV(io), mg));
576 call_method("CLOSE", G_SCALAR);
584 PUSHs(boolSV(do_close(gv, TRUE)));
597 GV * const wgv = MUTABLE_GV(POPs);
598 GV * const rgv = MUTABLE_GV(POPs);
603 if (!isGV_with_GP(rgv) || !isGV_with_GP(wgv))
604 DIE(aTHX_ PL_no_usym, "filehandle");
609 do_close(rgv, FALSE);
611 do_close(wgv, FALSE);
613 if (PerlProc_pipe(fd) < 0)
616 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
617 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
618 IoOFP(rstio) = IoIFP(rstio);
619 IoIFP(wstio) = IoOFP(wstio);
620 IoTYPE(rstio) = IoTYPE_RDONLY;
621 IoTYPE(wstio) = IoTYPE_WRONLY;
623 if (!IoIFP(rstio) || !IoOFP(wstio)) {
625 PerlIO_close(IoIFP(rstio));
627 PerlLIO_close(fd[0]);
629 PerlIO_close(IoOFP(wstio));
631 PerlLIO_close(fd[1]);
634 #if defined(HAS_FCNTL) && defined(F_SETFD)
635 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
636 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
643 DIE(aTHX_ PL_no_func, "pipe");
657 gv = MUTABLE_GV(POPs);
659 if (gv && (io = GvIO(gv))
660 && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar)))
663 XPUSHs(SvTIED_obj(MUTABLE_SV(io), mg));
666 call_method("FILENO", G_SCALAR);
672 if (!gv || !(io = GvIO(gv)) || !(fp = IoIFP(io))) {
673 /* Can't do this because people seem to do things like
674 defined(fileno($foo)) to check whether $foo is a valid fh.
675 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
676 report_evil_fh(gv, io, PL_op->op_type);
681 PUSHi(PerlIO_fileno(fp));
694 anum = PerlLIO_umask(022);
695 /* setting it to 022 between the two calls to umask avoids
696 * to have a window where the umask is set to 0 -- meaning
697 * that another thread could create world-writeable files. */
699 (void)PerlLIO_umask(anum);
702 anum = PerlLIO_umask(POPi);
703 TAINT_PROPER("umask");
706 /* Only DIE if trying to restrict permissions on "user" (self).
707 * Otherwise it's harmless and more useful to just return undef
708 * since 'group' and 'other' concepts probably don't exist here. */
709 if (MAXARG >= 1 && (POPi & 0700))
710 DIE(aTHX_ "umask not implemented");
711 XPUSHs(&PL_sv_undef);
730 gv = MUTABLE_GV(POPs);
732 if (gv && (io = GvIO(gv))) {
733 MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
736 XPUSHs(SvTIED_obj(MUTABLE_SV(io), mg));
741 call_method("BINMODE", G_SCALAR);
749 if (!(io = GvIO(gv)) || !(fp = IoIFP(io))) {
750 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
751 report_evil_fh(gv, io, PL_op->op_type);
752 SETERRNO(EBADF,RMS_IFI);
759 const char *d = NULL;
762 d = SvPV_const(discp, len);
763 mode = mode_from_discipline(d, len);
764 if (PerlIO_binmode(aTHX_ fp, IoTYPE(io), mode, d)) {
765 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
766 if (!PerlIO_binmode(aTHX_ IoOFP(io), IoTYPE(io), mode, d)) {
787 const I32 markoff = MARK - PL_stack_base;
788 const char *methname;
789 int how = PERL_MAGIC_tied;
793 switch(SvTYPE(varsv)) {
795 methname = "TIEHASH";
796 HvEITER_set(MUTABLE_HV(varsv), 0);
799 methname = "TIEARRAY";
802 if (isGV_with_GP(varsv)) {
803 methname = "TIEHANDLE";
804 how = PERL_MAGIC_tiedscalar;
805 /* For tied filehandles, we apply tiedscalar magic to the IO
806 slot of the GP rather than the GV itself. AMS 20010812 */
808 GvIOp(varsv) = newIO();
809 varsv = MUTABLE_SV(GvIOp(varsv));
814 methname = "TIESCALAR";
815 how = PERL_MAGIC_tiedscalar;
819 if (sv_isobject(*MARK)) { /* Calls GET magic. */
821 PUSHSTACKi(PERLSI_MAGIC);
823 EXTEND(SP,(I32)items);
827 call_method(methname, G_SCALAR);
830 /* Not clear why we don't call call_method here too.
831 * perhaps to get different error message ?
834 const char *name = SvPV_nomg_const(*MARK, len);
835 stash = gv_stashpvn(name, len, 0);
836 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
837 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
838 methname, SVfARG(SvOK(*MARK) ? *MARK : &PL_sv_no));
841 PUSHSTACKi(PERLSI_MAGIC);
843 EXTEND(SP,(I32)items);
847 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
853 if (sv_isobject(sv)) {
854 sv_unmagic(varsv, how);
855 /* Croak if a self-tie on an aggregate is attempted. */
856 if (varsv == SvRV(sv) &&
857 (SvTYPE(varsv) == SVt_PVAV ||
858 SvTYPE(varsv) == SVt_PVHV))
860 "Self-ties of arrays and hashes are not supported");
861 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
864 SP = PL_stack_base + markoff;
874 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
875 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
877 if (isGV_with_GP(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
880 if ((mg = SvTIED_mg(sv, how))) {
881 SV * const obj = SvRV(SvTIED_obj(sv, mg));
883 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
885 if (gv && isGV(gv) && (cv = GvCV(gv))) {
887 XPUSHs(SvTIED_obj(MUTABLE_SV(gv), mg));
888 mXPUSHi(SvREFCNT(obj) - 1);
891 call_sv(MUTABLE_SV(cv), G_VOID);
895 else if (mg && SvREFCNT(obj) > 1 && ckWARN(WARN_UNTIE)) {
896 Perl_warner(aTHX_ packWARN(WARN_UNTIE),
897 "untie attempted while %"UVuf" inner references still exist",
898 (UV)SvREFCNT(obj) - 1 ) ;
902 sv_unmagic(sv, how) ;
912 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
913 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
915 if (isGV_with_GP(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
918 if ((mg = SvTIED_mg(sv, how))) {
919 SV *osv = SvTIED_obj(sv, mg);
920 if (osv == mg->mg_obj)
921 osv = sv_mortalcopy(osv);
935 HV * const hv = MUTABLE_HV(POPs);
936 SV * const sv = newSVpvs_flags("AnyDBM_File", SVs_TEMP);
937 stash = gv_stashsv(sv, 0);
938 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
940 require_pv("AnyDBM_File.pm");
942 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH")))
943 DIE(aTHX_ "No dbm on this machine");
953 mPUSHu(O_RDWR|O_CREAT);
958 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
961 if (!sv_isobject(TOPs)) {
969 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
973 if (sv_isobject(TOPs)) {
974 sv_unmagic(MUTABLE_SV(hv), PERL_MAGIC_tied);
975 sv_magic(MUTABLE_SV(hv), TOPs, PERL_MAGIC_tied, NULL, 0);
992 struct timeval timebuf;
993 struct timeval *tbuf = &timebuf;
996 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1001 # if BYTEORDER & 0xf0000
1002 # define ORDERBYTE (0x88888888 - BYTEORDER)
1004 # define ORDERBYTE (0x4444 - BYTEORDER)
1010 for (i = 1; i <= 3; i++) {
1011 SV * const sv = SP[i];
1014 if (SvREADONLY(sv)) {
1016 sv_force_normal_flags(sv, 0);
1017 if (SvREADONLY(sv) && !(SvPOK(sv) && SvCUR(sv) == 0))
1018 DIE(aTHX_ "%s", PL_no_modify);
1021 if (ckWARN(WARN_MISC))
1022 Perl_warner(aTHX_ packWARN(WARN_MISC), "Non-string passed as bitmask");
1023 SvPV_force_nolen(sv); /* force string conversion */
1030 /* little endians can use vecs directly */
1031 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1038 masksize = NFDBITS / NBBY;
1040 masksize = sizeof(long); /* documented int, everyone seems to use long */
1042 Zero(&fd_sets[0], 4, char*);
1045 # if SELECT_MIN_BITS == 1
1046 growsize = sizeof(fd_set);
1048 # if defined(__GLIBC__) && defined(__FD_SETSIZE)
1049 # undef SELECT_MIN_BITS
1050 # define SELECT_MIN_BITS __FD_SETSIZE
1052 /* If SELECT_MIN_BITS is greater than one we most probably will want
1053 * to align the sizes with SELECT_MIN_BITS/8 because for example
1054 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
1055 * UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
1056 * on (sets/tests/clears bits) is 32 bits. */
1057 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
1065 timebuf.tv_sec = (long)value;
1066 value -= (NV)timebuf.tv_sec;
1067 timebuf.tv_usec = (long)(value * 1000000.0);
1072 for (i = 1; i <= 3; i++) {
1074 if (!SvOK(sv) || SvCUR(sv) == 0) {
1081 Sv_Grow(sv, growsize);
1085 while (++j <= growsize) {
1089 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1091 Newx(fd_sets[i], growsize, char);
1092 for (offset = 0; offset < growsize; offset += masksize) {
1093 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1094 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1097 fd_sets[i] = SvPVX(sv);
1101 #ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1102 /* Can't make just the (void*) conditional because that would be
1103 * cpp #if within cpp macro, and not all compilers like that. */
1104 nfound = PerlSock_select(
1106 (Select_fd_set_t) fd_sets[1],
1107 (Select_fd_set_t) fd_sets[2],
1108 (Select_fd_set_t) fd_sets[3],
1109 (void*) tbuf); /* Workaround for compiler bug. */
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],
1118 for (i = 1; i <= 3; i++) {
1121 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1123 for (offset = 0; offset < growsize; offset += masksize) {
1124 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1125 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1127 Safefree(fd_sets[i]);
1134 if (GIMME == G_ARRAY && tbuf) {
1135 value = (NV)(timebuf.tv_sec) +
1136 (NV)(timebuf.tv_usec) / 1000000.0;
1141 DIE(aTHX_ "select not implemented");
1146 =for apidoc setdefout
1148 Sets PL_defoutgv, the default file handle for output, to the passed in
1149 typeglob. As PL_defoutgv "owns" a reference on its typeglob, the reference
1150 count of the passed in typeglob is increased by one, and the reference count
1151 of the typeglob that PL_defoutgv points to is decreased by one.
1157 Perl_setdefout(pTHX_ GV *gv)
1160 SvREFCNT_inc_simple_void(gv);
1162 SvREFCNT_dec(PL_defoutgv);
1170 GV * const newdefout = (PL_op->op_private > 0) ? (MUTABLE_GV(POPs)) : NULL;
1171 GV * egv = GvEGV(PL_defoutgv);
1177 XPUSHs(&PL_sv_undef);
1179 GV * const * const gvp = (GV**)hv_fetch(hv, GvNAME(egv), GvNAMELEN(egv), FALSE);
1180 if (gvp && *gvp == egv) {
1181 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
1185 mXPUSHs(newRV(MUTABLE_SV(egv)));
1190 if (!GvIO(newdefout))
1191 gv_IOadd(newdefout);
1192 setdefout(newdefout);
1202 GV * const gv = (MAXARG==0) ? PL_stdingv : MUTABLE_GV(POPs);
1204 if (gv && (io = GvIO(gv))) {
1205 MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1207 const I32 gimme = GIMME_V;
1209 XPUSHs(SvTIED_obj(MUTABLE_SV(io), mg));
1212 call_method("GETC", gimme);
1215 if (gimme == G_SCALAR)
1216 SvSetMagicSV_nosteal(TARG, TOPs);
1220 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
1221 if ((!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
1222 && ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1223 report_evil_fh(gv, io, PL_op->op_type);
1224 SETERRNO(EBADF,RMS_IFI);
1228 sv_setpvs(TARG, " ");
1229 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
1230 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1231 /* Find out how many bytes the char needs */
1232 Size_t len = UTF8SKIP(SvPVX_const(TARG));
1235 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1236 SvCUR_set(TARG,1+len);
1245 S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
1248 register PERL_CONTEXT *cx;
1249 const I32 gimme = GIMME_V;
1251 PERL_ARGS_ASSERT_DOFORM;
1256 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
1257 PUSHFORMAT(cx, retop);
1259 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), 1);
1261 setdefout(gv); /* locally select filehandle so $% et al work */
1278 gv = MUTABLE_GV(POPs);
1293 goto not_a_format_reference;
1298 tmpsv = sv_newmortal();
1299 gv_efullname4(tmpsv, fgv, NULL, FALSE);
1300 name = SvPV_nolen_const(tmpsv);
1302 DIE(aTHX_ "Undefined format \"%s\" called", name);
1304 not_a_format_reference:
1305 DIE(aTHX_ "Not a format reference");
1308 cv = MUTABLE_CV(sv_2mortal(MUTABLE_SV(cv_clone(cv))));
1310 IoFLAGS(io) &= ~IOf_DIDTOP;
1311 return doform(cv,gv,PL_op->op_next);
1317 GV * const gv = cxstack[cxstack_ix].blk_format.gv;
1318 register IO * const io = GvIOp(gv);
1323 register PERL_CONTEXT *cx;
1325 if (!io || !(ofp = IoOFP(io)))
1328 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
1329 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
1331 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1332 PL_formtarget != PL_toptarget)
1336 if (!IoTOP_GV(io)) {
1339 if (!IoTOP_NAME(io)) {
1341 if (!IoFMT_NAME(io))
1342 IoFMT_NAME(io) = savepv(GvNAME(gv));
1343 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%s_TOP", GvNAME(gv)));
1344 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
1345 if ((topgv && GvFORM(topgv)) ||
1346 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
1347 IoTOP_NAME(io) = savesvpv(topname);
1349 IoTOP_NAME(io) = savepvs("top");
1351 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
1352 if (!topgv || !GvFORM(topgv)) {
1353 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1356 IoTOP_GV(io) = topgv;
1358 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1359 I32 lines = IoLINES_LEFT(io);
1360 const char *s = SvPVX_const(PL_formtarget);
1361 if (lines <= 0) /* Yow, header didn't even fit!!! */
1363 while (lines-- > 0) {
1364 s = strchr(s, '\n');
1370 const STRLEN save = SvCUR(PL_formtarget);
1371 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
1372 do_print(PL_formtarget, ofp);
1373 SvCUR_set(PL_formtarget, save);
1374 sv_chop(PL_formtarget, s);
1375 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
1378 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
1379 do_print(PL_formfeed, ofp);
1380 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1382 PL_formtarget = PL_toptarget;
1383 IoFLAGS(io) |= IOf_DIDTOP;
1386 DIE(aTHX_ "bad top format reference");
1389 SV * const sv = sv_newmortal();
1391 gv_efullname4(sv, fgv, NULL, FALSE);
1392 name = SvPV_nolen_const(sv);
1394 DIE(aTHX_ "Undefined top format \"%s\" called", name);
1396 DIE(aTHX_ "Undefined top format called");
1398 if (cv && CvCLONE(cv))
1399 cv = MUTABLE_CV(sv_2mortal(MUTABLE_SV(cv_clone(cv))));
1400 return doform(cv, gv, PL_op);
1404 POPBLOCK(cx,PL_curpm);
1410 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
1412 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
1413 else if (ckWARN(WARN_CLOSED))
1414 report_evil_fh(gv, io, PL_op->op_type);
1419 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
1420 if (ckWARN(WARN_IO))
1421 Perl_warner(aTHX_ packWARN(WARN_IO), "page overflow");
1423 if (!do_print(PL_formtarget, fp))
1426 FmLINES(PL_formtarget) = 0;
1427 SvCUR_set(PL_formtarget, 0);
1428 *SvEND(PL_formtarget) = '\0';
1429 if (IoFLAGS(io) & IOf_FLUSH)
1430 (void)PerlIO_flush(fp);
1435 PL_formtarget = PL_bodytarget;
1437 PERL_UNUSED_VAR(newsp);
1438 PERL_UNUSED_VAR(gimme);
1439 return cx->blk_sub.retop;
1444 dVAR; dSP; dMARK; dORIGMARK;
1450 = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv;
1452 if (gv && (io = GvIO(gv))) {
1453 MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1455 if (MARK == ORIGMARK) {
1458 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1462 *MARK = SvTIED_obj(MUTABLE_SV(io), mg);
1465 call_method("PRINTF", G_SCALAR);
1468 MARK = ORIGMARK + 1;
1476 if (!(io = GvIO(gv))) {
1477 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1478 report_evil_fh(gv, io, PL_op->op_type);
1479 SETERRNO(EBADF,RMS_IFI);
1482 else if (!(fp = IoOFP(io))) {
1483 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
1485 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
1486 else if (ckWARN(WARN_CLOSED))
1487 report_evil_fh(gv, io, PL_op->op_type);
1489 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
1493 if (SvTAINTED(MARK[1]))
1494 TAINT_PROPER("printf");
1495 do_sprintf(sv, SP - MARK, MARK + 1);
1496 if (!do_print(sv, fp))
1499 if (IoFLAGS(io) & IOf_FLUSH)
1500 if (PerlIO_flush(fp) == EOF)
1511 PUSHs(&PL_sv_undef);
1519 const int perm = (MAXARG > 3) ? POPi : 0666;
1520 const int mode = POPi;
1521 SV * const sv = POPs;
1522 GV * const gv = MUTABLE_GV(POPs);
1525 /* Need TIEHANDLE method ? */
1526 const char * const tmps = SvPV_const(sv, len);
1527 /* FIXME? do_open should do const */
1528 if (do_open(gv, tmps, len, TRUE, mode, perm, NULL)) {
1529 IoLINES(GvIOp(gv)) = 0;
1533 PUSHs(&PL_sv_undef);
1540 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
1546 Sock_size_t bufsize;
1554 bool charstart = FALSE;
1555 STRLEN charskip = 0;
1558 GV * const gv = MUTABLE_GV(*++MARK);
1559 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1560 && gv && (io = GvIO(gv)) )
1562 const MAGIC * mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1566 *MARK = SvTIED_obj(MUTABLE_SV(io), mg);
1568 call_method("READ", G_SCALAR);
1582 sv_setpvs(bufsv, "");
1583 length = SvIVx(*++MARK);
1586 offset = SvIVx(*++MARK);
1590 if (!io || !IoIFP(io)) {
1591 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1592 report_evil_fh(gv, io, PL_op->op_type);
1593 SETERRNO(EBADF,RMS_IFI);
1596 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
1597 buffer = SvPVutf8_force(bufsv, blen);
1598 /* UTF-8 may not have been set if they are all low bytes */
1603 buffer = SvPV_force(bufsv, blen);
1604 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
1607 DIE(aTHX_ "Negative length");
1615 if (PL_op->op_type == OP_RECV) {
1616 char namebuf[MAXPATHLEN];
1617 #if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
1618 bufsize = sizeof (struct sockaddr_in);
1620 bufsize = sizeof namebuf;
1622 #ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1626 buffer = SvGROW(bufsv, (STRLEN)(length+1));
1627 /* 'offset' means 'flags' here */
1628 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
1629 (struct sockaddr *)namebuf, &bufsize);
1633 /* Bogus return without padding */
1634 bufsize = sizeof (struct sockaddr_in);
1636 SvCUR_set(bufsv, count);
1637 *SvEND(bufsv) = '\0';
1638 (void)SvPOK_only(bufsv);
1642 /* This should not be marked tainted if the fp is marked clean */
1643 if (!(IoFLAGS(io) & IOf_UNTAINT))
1644 SvTAINTED_on(bufsv);
1646 sv_setpvn(TARG, namebuf, bufsize);
1651 if (PL_op->op_type == OP_RECV)
1652 DIE(aTHX_ PL_no_sock_func, "recv");
1654 if (DO_UTF8(bufsv)) {
1655 /* offset adjust in characters not bytes */
1656 blen = sv_len_utf8(bufsv);
1659 if (-offset > (int)blen)
1660 DIE(aTHX_ "Offset outside string");
1663 if (DO_UTF8(bufsv)) {
1664 /* convert offset-as-chars to offset-as-bytes */
1665 if (offset >= (int)blen)
1666 offset += SvCUR(bufsv) - blen;
1668 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
1671 bufsize = SvCUR(bufsv);
1672 /* Allocating length + offset + 1 isn't perfect in the case of reading
1673 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1675 (should be 2 * length + offset + 1, or possibly something longer if
1676 PL_encoding is true) */
1677 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
1678 if (offset > 0 && (Sock_size_t)offset > bufsize) { /* Zero any newly allocated space */
1679 Zero(buffer+bufsize, offset-bufsize, char);
1681 buffer = buffer + offset;
1683 read_target = bufsv;
1685 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1686 concatenate it to the current buffer. */
1688 /* Truncate the existing buffer to the start of where we will be
1690 SvCUR_set(bufsv, offset);
1692 read_target = sv_newmortal();
1693 SvUPGRADE(read_target, SVt_PV);
1694 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1697 if (PL_op->op_type == OP_SYSREAD) {
1698 #ifdef PERL_SOCK_SYSREAD_IS_RECV
1699 if (IoTYPE(io) == IoTYPE_SOCKET) {
1700 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1706 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1711 #ifdef HAS_SOCKET__bad_code_maybe
1712 if (IoTYPE(io) == IoTYPE_SOCKET) {
1713 char namebuf[MAXPATHLEN];
1714 #if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1715 bufsize = sizeof (struct sockaddr_in);
1717 bufsize = sizeof namebuf;
1719 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
1720 (struct sockaddr *)namebuf, &bufsize);
1725 count = PerlIO_read(IoIFP(io), buffer, length);
1726 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1727 if (count == 0 && PerlIO_error(IoIFP(io)))
1731 if ((IoTYPE(io) == IoTYPE_WRONLY) && ckWARN(WARN_IO))
1732 report_evil_fh(gv, io, OP_phoney_OUTPUT_ONLY);
1735 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1736 *SvEND(read_target) = '\0';
1737 (void)SvPOK_only(read_target);
1738 if (fp_utf8 && !IN_BYTES) {
1739 /* Look at utf8 we got back and count the characters */
1740 const char *bend = buffer + count;
1741 while (buffer < bend) {
1743 skip = UTF8SKIP(buffer);
1746 if (buffer - charskip + skip > bend) {
1747 /* partial character - try for rest of it */
1748 length = skip - (bend-buffer);
1749 offset = bend - SvPVX_const(bufsv);
1761 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1762 provided amount read (count) was what was requested (length)
1764 if (got < wanted && count == length) {
1765 length = wanted - got;
1766 offset = bend - SvPVX_const(bufsv);
1769 /* return value is character count */
1773 else if (buffer_utf8) {
1774 /* Let svcatsv upgrade the bytes we read in to utf8.
1775 The buffer is a mortal so will be freed soon. */
1776 sv_catsv_nomg(bufsv, read_target);
1779 /* This should not be marked tainted if the fp is marked clean */
1780 if (!(IoFLAGS(io) & IOf_UNTAINT))
1781 SvTAINTED_on(bufsv);
1793 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
1799 STRLEN orig_blen_bytes;
1800 const int op_type = PL_op->op_type;
1804 GV *const gv = MUTABLE_GV(*++MARK);
1805 if (PL_op->op_type == OP_SYSWRITE
1806 && gv && (io = GvIO(gv))) {
1807 MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1811 if (MARK == SP - 1) {
1813 mXPUSHi(sv_len(sv));
1818 *(ORIGMARK+1) = SvTIED_obj(MUTABLE_SV(io), mg);
1820 call_method("WRITE", G_SCALAR);
1836 if (!io || !IoIFP(io) || IoTYPE(io) == IoTYPE_RDONLY) {
1838 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
1839 if (io && IoIFP(io))
1840 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
1842 report_evil_fh(gv, io, PL_op->op_type);
1844 SETERRNO(EBADF,RMS_IFI);
1848 /* Do this first to trigger any overloading. */
1849 buffer = SvPV_const(bufsv, blen);
1850 orig_blen_bytes = blen;
1851 doing_utf8 = DO_UTF8(bufsv);
1853 if (PerlIO_isutf8(IoIFP(io))) {
1854 if (!SvUTF8(bufsv)) {
1855 /* We don't modify the original scalar. */
1856 tmpbuf = bytes_to_utf8((const U8*) buffer, &blen);
1857 buffer = (char *) tmpbuf;
1861 else if (doing_utf8) {
1862 STRLEN tmplen = blen;
1863 U8 * const result = bytes_from_utf8((const U8*) buffer, &tmplen, &doing_utf8);
1866 buffer = (char *) tmpbuf;
1870 assert((char *)result == buffer);
1871 Perl_croak(aTHX_ "Wide character in %s", OP_DESC(PL_op));
1875 if (op_type == OP_SYSWRITE) {
1876 Size_t length = 0; /* This length is in characters. */
1882 /* The SV is bytes, and we've had to upgrade it. */
1883 blen_chars = orig_blen_bytes;
1885 /* The SV really is UTF-8. */
1886 if (SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
1887 /* Don't call sv_len_utf8 again because it will call magic
1888 or overloading a second time, and we might get back a
1889 different result. */
1890 blen_chars = utf8_length((U8*)buffer, (U8*)buffer + blen);
1892 /* It's safe, and it may well be cached. */
1893 blen_chars = sv_len_utf8(bufsv);
1901 length = blen_chars;
1903 #if Size_t_size > IVSIZE
1904 length = (Size_t)SvNVx(*++MARK);
1906 length = (Size_t)SvIVx(*++MARK);
1908 if ((SSize_t)length < 0) {
1910 DIE(aTHX_ "Negative length");
1915 offset = SvIVx(*++MARK);
1917 if (-offset > (IV)blen_chars) {
1919 DIE(aTHX_ "Offset outside string");
1921 offset += blen_chars;
1922 } else if (offset >= (IV)blen_chars && blen_chars > 0) {
1924 DIE(aTHX_ "Offset outside string");
1928 if (length > blen_chars - offset)
1929 length = blen_chars - offset;
1931 /* Here we convert length from characters to bytes. */
1932 if (tmpbuf || SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
1933 /* Either we had to convert the SV, or the SV is magical, or
1934 the SV has overloading, in which case we can't or mustn't
1935 or mustn't call it again. */
1937 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
1938 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1940 /* It's a real UTF-8 SV, and it's not going to change under
1941 us. Take advantage of any cache. */
1943 I32 len_I32 = length;
1945 /* Convert the start and end character positions to bytes.
1946 Remember that the second argument to sv_pos_u2b is relative
1948 sv_pos_u2b(bufsv, &start, &len_I32);
1955 buffer = buffer+offset;
1957 #ifdef PERL_SOCK_SYSWRITE_IS_SEND
1958 if (IoTYPE(io) == IoTYPE_SOCKET) {
1959 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
1965 /* See the note at doio.c:do_print about filesize limits. --jhi */
1966 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
1972 const int flags = SvIVx(*++MARK);
1975 char * const sockbuf = SvPVx(*++MARK, mlen);
1976 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1977 flags, (struct sockaddr *)sockbuf, mlen);
1981 = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, flags);
1986 DIE(aTHX_ PL_no_sock_func, "send");
1993 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
1996 #if Size_t_size > IVSIZE
2017 gv = PL_last_in_gv = MUTABLE_GV(POPs); /* eof(FH) */
2018 else if (PL_op->op_flags & OPf_SPECIAL)
2019 gv = PL_last_in_gv = GvEGV(PL_argvgv); /* eof() - ARGV magic */
2021 gv = PL_last_in_gv; /* eof */
2026 if ((io = GvIO(gv)) && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) {
2028 XPUSHs(SvTIED_obj(MUTABLE_SV(io), mg));
2030 * in Perl 5.12 and later, the additional paramter is a bitmask:
2033 * 2 = eof() <- ARGV magic
2036 mPUSHi(1); /* 1 = eof(FH) - simple, explicit FH */
2037 else if (PL_op->op_flags & OPf_SPECIAL)
2038 mPUSHi(2); /* 2 = eof() - ARGV magic */
2040 mPUSHi(0); /* 0 = eof - simple, implicit FH */
2043 call_method("EOF", G_SCALAR);
2049 if (!MAXARG && (PL_op->op_flags & OPf_SPECIAL)) { /* eof() */
2050 if (io && !IoIFP(io)) {
2051 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
2053 IoFLAGS(io) &= ~IOf_START;
2054 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, NULL);
2056 sv_setpvs(GvSV(gv), "-");
2058 GvSV(gv) = newSVpvs("-");
2059 SvSETMAGIC(GvSV(gv));
2061 else if (!nextargv(gv))
2066 PUSHs(boolSV(do_eof(gv)));
2077 PL_last_in_gv = MUTABLE_GV(POPs);
2080 if (gv && (io = GvIO(gv))) {
2081 MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
2084 XPUSHs(SvTIED_obj(MUTABLE_SV(io), mg));
2087 call_method("TELL", G_SCALAR);
2094 #if LSEEKSIZE > IVSIZE
2095 PUSHn( do_tell(gv) );
2097 PUSHi( do_tell(gv) );
2105 const int whence = POPi;
2106 #if LSEEKSIZE > IVSIZE
2107 const Off_t offset = (Off_t)SvNVx(POPs);
2109 const Off_t offset = (Off_t)SvIVx(POPs);
2112 GV * const gv = PL_last_in_gv = MUTABLE_GV(POPs);
2115 if (gv && (io = GvIO(gv))) {
2116 MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
2119 XPUSHs(SvTIED_obj(MUTABLE_SV(io), mg));
2120 #if LSEEKSIZE > IVSIZE
2121 mXPUSHn((NV) offset);
2128 call_method("SEEK", G_SCALAR);
2135 if (PL_op->op_type == OP_SEEK)
2136 PUSHs(boolSV(do_seek(gv, offset, whence)));
2138 const Off_t sought = do_sysseek(gv, offset, whence);
2140 PUSHs(&PL_sv_undef);
2142 SV* const sv = sought ?
2143 #if LSEEKSIZE > IVSIZE
2148 : newSVpvn(zero_but_true, ZBTLEN);
2159 /* There seems to be no consensus on the length type of truncate()
2160 * and ftruncate(), both off_t and size_t have supporters. In
2161 * general one would think that when using large files, off_t is
2162 * at least as wide as size_t, so using an off_t should be okay. */
2163 /* XXX Configure probe for the length type of *truncate() needed XXX */
2166 #if Off_t_size > IVSIZE
2171 /* Checking for length < 0 is problematic as the type might or
2172 * might not be signed: if it is not, clever compilers will moan. */
2173 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
2180 if (PL_op->op_flags & OPf_SPECIAL) {
2181 tmpgv = gv_fetchsv(POPs, 0, SVt_PVIO);
2190 TAINT_PROPER("truncate");
2191 if (!(fp = IoIFP(io))) {
2197 if (ftruncate(PerlIO_fileno(fp), len) < 0)
2199 if (my_chsize(PerlIO_fileno(fp), len) < 0)
2206 SV * const sv = POPs;
2209 if (isGV_with_GP(sv)) {
2210 tmpgv = MUTABLE_GV(sv); /* *main::FRED for example */
2211 goto do_ftruncate_gv;
2213 else if (SvROK(sv) && isGV_with_GP(SvRV(sv))) {
2214 tmpgv = MUTABLE_GV(SvRV(sv)); /* \*main::FRED for example */
2215 goto do_ftruncate_gv;
2217 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2218 io = MUTABLE_IO(SvRV(sv)); /* *main::FRED{IO} for example */
2219 goto do_ftruncate_io;
2222 name = SvPV_nolen_const(sv);
2223 TAINT_PROPER("truncate");
2225 if (truncate(name, len) < 0)
2229 const int tmpfd = PerlLIO_open(name, O_RDWR);
2234 if (my_chsize(tmpfd, len) < 0)
2236 PerlLIO_close(tmpfd);
2245 SETERRNO(EBADF,RMS_IFI);
2253 SV * const argsv = POPs;
2254 const unsigned int func = POPu;
2255 const int optype = PL_op->op_type;
2256 GV * const gv = MUTABLE_GV(POPs);
2257 IO * const io = gv ? GvIOn(gv) : NULL;
2261 if (!io || !argsv || !IoIFP(io)) {
2262 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2263 report_evil_fh(gv, io, PL_op->op_type);
2264 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
2268 if (SvPOK(argsv) || !SvNIOK(argsv)) {
2271 s = SvPV_force(argsv, len);
2272 need = IOCPARM_LEN(func);
2274 s = Sv_Grow(argsv, need + 1);
2275 SvCUR_set(argsv, need);
2278 s[SvCUR(argsv)] = 17; /* a little sanity check here */
2281 retval = SvIV(argsv);
2282 s = INT2PTR(char*,retval); /* ouch */
2285 TAINT_PROPER(PL_op_desc[optype]);
2287 if (optype == OP_IOCTL)
2289 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
2291 DIE(aTHX_ "ioctl is not implemented");
2295 DIE(aTHX_ "fcntl is not implemented");
2297 #if defined(OS2) && defined(__EMX__)
2298 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
2300 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
2304 #if defined(HAS_IOCTL) || defined(HAS_FCNTL)
2306 if (s[SvCUR(argsv)] != 17)
2307 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
2309 s[SvCUR(argsv)] = 0; /* put our null back */
2310 SvSETMAGIC(argsv); /* Assume it has changed */
2319 PUSHp(zero_but_true, ZBTLEN);
2332 const int argtype = POPi;
2333 GV * const gv = (MAXARG == 0) ? PL_last_in_gv : MUTABLE_GV(POPs);
2335 if (gv && (io = GvIO(gv)))
2341 /* XXX Looks to me like io is always NULL at this point */
2343 (void)PerlIO_flush(fp);
2344 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
2347 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2348 report_evil_fh(gv, io, PL_op->op_type);
2350 SETERRNO(EBADF,RMS_IFI);
2355 DIE(aTHX_ PL_no_func, "flock()");
2365 const int protocol = POPi;
2366 const int type = POPi;
2367 const int domain = POPi;
2368 GV * const gv = MUTABLE_GV(POPs);
2369 register IO * const io = gv ? GvIOn(gv) : NULL;
2373 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2374 report_evil_fh(gv, io, PL_op->op_type);
2375 if (io && IoIFP(io))
2376 do_close(gv, FALSE);
2377 SETERRNO(EBADF,LIB_INVARG);
2382 do_close(gv, FALSE);
2384 TAINT_PROPER("socket");
2385 fd = PerlSock_socket(domain, type, protocol);
2388 IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2389 IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
2390 IoTYPE(io) = IoTYPE_SOCKET;
2391 if (!IoIFP(io) || !IoOFP(io)) {
2392 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2393 if (IoOFP(io)) PerlIO_close(IoOFP(io));
2394 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
2397 #if defined(HAS_FCNTL) && defined(F_SETFD)
2398 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2402 setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
2407 DIE(aTHX_ PL_no_sock_func, "socket");
2413 #if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
2415 const int protocol = POPi;
2416 const int type = POPi;
2417 const int domain = POPi;
2418 GV * const gv2 = MUTABLE_GV(POPs);
2419 GV * const gv1 = MUTABLE_GV(POPs);
2420 register IO * const io1 = gv1 ? GvIOn(gv1) : NULL;
2421 register IO * const io2 = gv2 ? GvIOn(gv2) : NULL;
2424 if (!gv1 || !gv2 || !io1 || !io2) {
2425 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
2427 report_evil_fh(gv1, io1, PL_op->op_type);
2429 report_evil_fh(gv1, io2, PL_op->op_type);
2431 if (io1 && IoIFP(io1))
2432 do_close(gv1, FALSE);
2433 if (io2 && IoIFP(io2))
2434 do_close(gv2, FALSE);
2439 do_close(gv1, FALSE);
2441 do_close(gv2, FALSE);
2443 TAINT_PROPER("socketpair");
2444 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
2446 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2447 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
2448 IoTYPE(io1) = IoTYPE_SOCKET;
2449 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2450 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
2451 IoTYPE(io2) = IoTYPE_SOCKET;
2452 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
2453 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2454 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
2455 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
2456 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2457 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
2458 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
2461 #if defined(HAS_FCNTL) && defined(F_SETFD)
2462 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2463 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2468 DIE(aTHX_ PL_no_sock_func, "socketpair");
2476 SV * const addrsv = POPs;
2477 /* OK, so on what platform does bind modify addr? */
2479 GV * const gv = MUTABLE_GV(POPs);
2480 register IO * const io = GvIOn(gv);
2483 if (!io || !IoIFP(io))
2486 addr = SvPV_const(addrsv, len);
2487 TAINT_PROPER("bind");
2488 if (PerlSock_bind(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
2494 if (ckWARN(WARN_CLOSED))
2495 report_evil_fh(gv, io, PL_op->op_type);
2496 SETERRNO(EBADF,SS_IVCHAN);
2499 DIE(aTHX_ PL_no_sock_func, "bind");
2507 SV * const addrsv = POPs;
2508 GV * const gv = MUTABLE_GV(POPs);
2509 register IO * const io = GvIOn(gv);
2513 if (!io || !IoIFP(io))
2516 addr = SvPV_const(addrsv, len);
2517 TAINT_PROPER("connect");
2518 if (PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 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, "connect");
2537 const int backlog = POPi;
2538 GV * const gv = MUTABLE_GV(POPs);
2539 register IO * const io = gv ? GvIOn(gv) : NULL;
2541 if (!gv || !io || !IoIFP(io))
2544 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
2550 if (ckWARN(WARN_CLOSED))
2551 report_evil_fh(gv, io, PL_op->op_type);
2552 SETERRNO(EBADF,SS_IVCHAN);
2555 DIE(aTHX_ PL_no_sock_func, "listen");
2565 char namebuf[MAXPATHLEN];
2566 #if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
2567 Sock_size_t len = sizeof (struct sockaddr_in);
2569 Sock_size_t len = sizeof namebuf;
2571 GV * const ggv = MUTABLE_GV(POPs);
2572 GV * const ngv = MUTABLE_GV(POPs);
2581 if (!gstio || !IoIFP(gstio))
2585 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
2588 /* Some platforms indicate zero length when an AF_UNIX client is
2589 * not bound. Simulate a non-zero-length sockaddr structure in
2591 namebuf[0] = 0; /* sun_len */
2592 namebuf[1] = AF_UNIX; /* sun_family */
2600 do_close(ngv, FALSE);
2601 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2602 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
2603 IoTYPE(nstio) = IoTYPE_SOCKET;
2604 if (!IoIFP(nstio) || !IoOFP(nstio)) {
2605 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2606 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
2607 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
2610 #if defined(HAS_FCNTL) && defined(F_SETFD)
2611 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2615 len = sizeof (struct sockaddr_in); /* EPOC somehow truncates info */
2616 setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
2618 #ifdef __SCO_VERSION__
2619 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
2622 PUSHp(namebuf, len);
2626 if (ckWARN(WARN_CLOSED))
2627 report_evil_fh(ggv, ggv ? GvIO(ggv) : 0, PL_op->op_type);
2628 SETERRNO(EBADF,SS_IVCHAN);
2634 DIE(aTHX_ PL_no_sock_func, "accept");
2642 const int how = POPi;
2643 GV * const gv = MUTABLE_GV(POPs);
2644 register IO * const io = GvIOn(gv);
2646 if (!io || !IoIFP(io))
2649 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
2653 if (ckWARN(WARN_CLOSED))
2654 report_evil_fh(gv, io, PL_op->op_type);
2655 SETERRNO(EBADF,SS_IVCHAN);
2658 DIE(aTHX_ PL_no_sock_func, "shutdown");
2666 const int optype = PL_op->op_type;
2667 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
2668 const unsigned int optname = (unsigned int) POPi;
2669 const unsigned int lvl = (unsigned int) POPi;
2670 GV * const gv = MUTABLE_GV(POPs);
2671 register IO * const io = GvIOn(gv);
2675 if (!io || !IoIFP(io))
2678 fd = PerlIO_fileno(IoIFP(io));
2682 (void)SvPOK_only(sv);
2686 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
2693 #if defined(__SYMBIAN32__)
2694 # define SETSOCKOPT_OPTION_VALUE_T void *
2696 # define SETSOCKOPT_OPTION_VALUE_T const char *
2698 /* XXX TODO: We need to have a proper type (a Configure probe,
2699 * etc.) for what the C headers think of the third argument of
2700 * setsockopt(), the option_value read-only buffer: is it
2701 * a "char *", or a "void *", const or not. Some compilers
2702 * don't take kindly to e.g. assuming that "char *" implicitly
2703 * promotes to a "void *", or to explicitly promoting/demoting
2704 * consts to non/vice versa. The "const void *" is the SUS
2705 * definition, but that does not fly everywhere for the above
2707 SETSOCKOPT_OPTION_VALUE_T buf;
2711 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2715 aint = (int)SvIV(sv);
2716 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
2719 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
2728 if (ckWARN(WARN_CLOSED))
2729 report_evil_fh(gv, io, optype);
2730 SETERRNO(EBADF,SS_IVCHAN);
2735 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
2743 const int optype = PL_op->op_type;
2744 GV * const gv = MUTABLE_GV(POPs);
2745 register IO * const io = GvIOn(gv);
2750 if (!io || !IoIFP(io))
2753 sv = sv_2mortal(newSV(257));
2754 (void)SvPOK_only(sv);
2758 fd = PerlIO_fileno(IoIFP(io));
2760 case OP_GETSOCKNAME:
2761 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2764 case OP_GETPEERNAME:
2765 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2767 #if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2769 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";
2770 /* If the call succeeded, make sure we don't have a zeroed port/addr */
2771 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2772 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
2773 sizeof(u_short) + sizeof(struct in_addr))) {
2780 #ifdef BOGUS_GETNAME_RETURN
2781 /* Interactive Unix, getpeername() and getsockname()
2782 does not return valid namelen */
2783 if (len == BOGUS_GETNAME_RETURN)
2784 len = sizeof(struct sockaddr);
2792 if (ckWARN(WARN_CLOSED))
2793 report_evil_fh(gv, io, optype);
2794 SETERRNO(EBADF,SS_IVCHAN);
2799 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
2814 if (PL_op->op_flags & OPf_REF) {
2816 if (PL_op->op_type == OP_LSTAT) {
2817 if (gv != PL_defgv) {
2818 do_fstat_warning_check:
2819 if (ckWARN(WARN_IO))
2820 Perl_warner(aTHX_ packWARN(WARN_IO),
2821 "lstat() on filehandle %s", gv ? GvENAME(gv) : "");
2822 } else if (PL_laststype != OP_LSTAT)
2823 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
2827 if (gv != PL_defgv) {
2828 PL_laststype = OP_STAT;
2830 sv_setpvs(PL_statname, "");
2837 PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
2838 } else if (IoDIRP(io)) {
2840 PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache);
2842 PL_laststatval = -1;
2848 if (PL_laststatval < 0) {
2849 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2850 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
2855 SV* const sv = POPs;
2856 if (isGV_with_GP(sv)) {
2857 gv = MUTABLE_GV(sv);
2859 } else if(SvROK(sv) && isGV_with_GP(SvRV(sv))) {
2860 gv = MUTABLE_GV(SvRV(sv));
2861 if (PL_op->op_type == OP_LSTAT)
2862 goto do_fstat_warning_check;
2864 } else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2865 io = MUTABLE_IO(SvRV(sv));
2866 if (PL_op->op_type == OP_LSTAT)
2867 goto do_fstat_warning_check;
2868 goto do_fstat_have_io;
2871 sv_setpv(PL_statname, SvPV_nolen_const(sv));
2873 PL_laststype = PL_op->op_type;
2874 if (PL_op->op_type == OP_LSTAT)
2875 PL_laststatval = PerlLIO_lstat(SvPV_nolen_const(PL_statname), &PL_statcache);
2877 PL_laststatval = PerlLIO_stat(SvPV_nolen_const(PL_statname), &PL_statcache);
2878 if (PL_laststatval < 0) {
2879 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname), '\n'))
2880 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
2886 if (gimme != G_ARRAY) {
2887 if (gimme != G_VOID)
2888 XPUSHs(boolSV(max));
2894 mPUSHi(PL_statcache.st_dev);
2895 mPUSHi(PL_statcache.st_ino);
2896 mPUSHu(PL_statcache.st_mode);
2897 mPUSHu(PL_statcache.st_nlink);
2898 #if Uid_t_size > IVSIZE
2899 mPUSHn(PL_statcache.st_uid);
2901 # if Uid_t_sign <= 0
2902 mPUSHi(PL_statcache.st_uid);
2904 mPUSHu(PL_statcache.st_uid);
2907 #if Gid_t_size > IVSIZE
2908 mPUSHn(PL_statcache.st_gid);
2910 # if Gid_t_sign <= 0
2911 mPUSHi(PL_statcache.st_gid);
2913 mPUSHu(PL_statcache.st_gid);
2916 #ifdef USE_STAT_RDEV
2917 mPUSHi(PL_statcache.st_rdev);
2919 PUSHs(newSVpvs_flags("", SVs_TEMP));
2921 #if Off_t_size > IVSIZE
2922 mPUSHn(PL_statcache.st_size);
2924 mPUSHi(PL_statcache.st_size);
2927 mPUSHn(PL_statcache.st_atime);
2928 mPUSHn(PL_statcache.st_mtime);
2929 mPUSHn(PL_statcache.st_ctime);
2931 mPUSHi(PL_statcache.st_atime);
2932 mPUSHi(PL_statcache.st_mtime);
2933 mPUSHi(PL_statcache.st_ctime);
2935 #ifdef USE_STAT_BLOCKS
2936 mPUSHu(PL_statcache.st_blksize);
2937 mPUSHu(PL_statcache.st_blocks);
2939 PUSHs(newSVpvs_flags("", SVs_TEMP));
2940 PUSHs(newSVpvs_flags("", SVs_TEMP));
2946 /* This macro is used by the stacked filetest operators :
2947 * if the previous filetest failed, short-circuit and pass its value.
2948 * Else, discard it from the stack and continue. --rgs
2950 #define STACKED_FTEST_CHECK if (PL_op->op_private & OPpFT_STACKED) { \
2951 if (!SvTRUE(TOPs)) { RETURN; } \
2952 else { (void)POPs; PUTBACK; } \
2959 /* Not const, because things tweak this below. Not bool, because there's
2960 no guarantee that OPp_FT_ACCESS is <= CHAR_MAX */
2961 #if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2962 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
2963 /* Giving some sort of initial value silences compilers. */
2965 int access_mode = R_OK;
2967 int access_mode = 0;
2970 /* access_mode is never used, but leaving use_access in makes the
2971 conditional compiling below much clearer. */
2974 int stat_mode = S_IRUSR;
2976 bool effective = FALSE;
2980 switch (PL_op->op_type) {
2981 case OP_FTRREAD: opchar = 'R'; break;
2982 case OP_FTRWRITE: opchar = 'W'; break;
2983 case OP_FTREXEC: opchar = 'X'; break;
2984 case OP_FTEREAD: opchar = 'r'; break;
2985 case OP_FTEWRITE: opchar = 'w'; break;
2986 case OP_FTEEXEC: opchar = 'x'; break;
2988 tryAMAGICftest(opchar);
2990 STACKED_FTEST_CHECK;
2992 switch (PL_op->op_type) {
2994 #if !(defined(HAS_ACCESS) && defined(R_OK))
3000 #if defined(HAS_ACCESS) && defined(W_OK)
3005 stat_mode = S_IWUSR;
3009 #if defined(HAS_ACCESS) && defined(X_OK)
3014 stat_mode = S_IXUSR;
3018 #ifdef PERL_EFF_ACCESS
3021 stat_mode = S_IWUSR;
3025 #ifndef PERL_EFF_ACCESS
3032 #ifdef PERL_EFF_ACCESS
3037 stat_mode = S_IXUSR;
3043 #if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
3044 const char *name = POPpx;
3046 # ifdef PERL_EFF_ACCESS
3047 result = PERL_EFF_ACCESS(name, access_mode);
3049 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
3055 result = access(name, access_mode);
3057 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
3072 if (cando(stat_mode, effective, &PL_statcache))
3081 const int op_type = PL_op->op_type;
3086 case OP_FTIS: opchar = 'e'; break;
3087 case OP_FTSIZE: opchar = 's'; break;
3088 case OP_FTMTIME: opchar = 'M'; break;
3089 case OP_FTCTIME: opchar = 'C'; break;
3090 case OP_FTATIME: opchar = 'A'; break;
3092 tryAMAGICftest(opchar);
3094 STACKED_FTEST_CHECK;
3100 if (op_type == OP_FTIS)
3103 /* You can't dTARGET inside OP_FTIS, because you'll get
3104 "panic: pad_sv po" - the op is not flagged to have a target. */
3108 #if Off_t_size > IVSIZE
3109 PUSHn(PL_statcache.st_size);
3111 PUSHi(PL_statcache.st_size);
3115 PUSHn( (((NV)PL_basetime - PL_statcache.st_mtime)) / 86400.0 );
3118 PUSHn( (((NV)PL_basetime - PL_statcache.st_atime)) / 86400.0 );
3121 PUSHn( (((NV)PL_basetime - PL_statcache.st_ctime)) / 86400.0 );
3135 switch (PL_op->op_type) {
3136 case OP_FTROWNED: opchar = 'O'; break;
3137 case OP_FTEOWNED: opchar = 'o'; break;
3138 case OP_FTZERO: opchar = 'z'; break;
3139 case OP_FTSOCK: opchar = 'S'; break;
3140 case OP_FTCHR: opchar = 'c'; break;
3141 case OP_FTBLK: opchar = 'b'; break;
3142 case OP_FTFILE: opchar = 'f'; break;
3143 case OP_FTDIR: opchar = 'd'; break;
3144 case OP_FTPIPE: opchar = 'p'; break;
3145 case OP_FTSUID: opchar = 'u'; break;
3146 case OP_FTSGID: opchar = 'g'; break;
3147 case OP_FTSVTX: opchar = 'k'; break;
3149 tryAMAGICftest(opchar);
3151 /* I believe that all these three are likely to be defined on most every
3152 system these days. */
3154 if(PL_op->op_type == OP_FTSUID)
3158 if(PL_op->op_type == OP_FTSGID)
3162 if(PL_op->op_type == OP_FTSVTX)
3166 STACKED_FTEST_CHECK;
3172 switch (PL_op->op_type) {
3174 if (PL_statcache.st_uid == PL_uid)
3178 if (PL_statcache.st_uid == PL_euid)
3182 if (PL_statcache.st_size == 0)
3186 if (S_ISSOCK(PL_statcache.st_mode))
3190 if (S_ISCHR(PL_statcache.st_mode))
3194 if (S_ISBLK(PL_statcache.st_mode))
3198 if (S_ISREG(PL_statcache.st_mode))
3202 if (S_ISDIR(PL_statcache.st_mode))
3206 if (S_ISFIFO(PL_statcache.st_mode))
3211 if (PL_statcache.st_mode & S_ISUID)
3217 if (PL_statcache.st_mode & S_ISGID)
3223 if (PL_statcache.st_mode & S_ISVTX)
3237 tryAMAGICftest('l');
3238 result = my_lstat();
3243 if (S_ISLNK(PL_statcache.st_mode))
3256 tryAMAGICftest('t');
3258 STACKED_FTEST_CHECK;
3260 if (PL_op->op_flags & OPf_REF)
3262 else if (isGV(TOPs))
3263 gv = MUTABLE_GV(POPs);
3264 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3265 gv = MUTABLE_GV(SvRV(POPs));
3267 gv = gv_fetchsv(tmpsv = POPs, 0, SVt_PVIO);
3269 if (GvIO(gv) && IoIFP(GvIOp(gv)))
3270 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
3271 else if (tmpsv && SvOK(tmpsv)) {
3272 const char *tmps = SvPV_nolen_const(tmpsv);
3280 if (PerlLIO_isatty(fd))
3285 #if defined(atarist) /* this will work with atariST. Configure will
3286 make guesses for other systems. */
3287 # define FILE_base(f) ((f)->_base)
3288 # define FILE_ptr(f) ((f)->_ptr)
3289 # define FILE_cnt(f) ((f)->_cnt)
3290 # define FILE_bufsiz(f) ((f)->_cnt + ((f)->_ptr - (f)->_base))
3301 register STDCHAR *s;
3307 tryAMAGICftest(PL_op->op_type == OP_FTTEXT ? 'T' : 'B');
3309 STACKED_FTEST_CHECK;
3311 if (PL_op->op_flags & OPf_REF)
3313 else if (isGV(TOPs))
3314 gv = MUTABLE_GV(POPs);
3315 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3316 gv = MUTABLE_GV(SvRV(POPs));
3322 if (gv == PL_defgv) {
3324 io = GvIO(PL_statgv);
3327 goto really_filename;
3332 PL_laststatval = -1;
3333 sv_setpvs(PL_statname, "");
3334 io = GvIO(PL_statgv);
3336 if (io && IoIFP(io)) {
3337 if (! PerlIO_has_base(IoIFP(io)))
3338 DIE(aTHX_ "-T and -B not implemented on filehandles");
3339 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3340 if (PL_laststatval < 0)
3342 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
3343 if (PL_op->op_type == OP_FTTEXT)
3348 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
3349 i = PerlIO_getc(IoIFP(io));
3351 (void)PerlIO_ungetc(IoIFP(io),i);
3353 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
3355 len = PerlIO_get_bufsiz(IoIFP(io));
3356 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
3357 /* sfio can have large buffers - limit to 512 */
3362 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
3364 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
3366 SETERRNO(EBADF,RMS_IFI);
3374 PL_laststype = OP_STAT;
3375 sv_setpv(PL_statname, SvPV_nolen_const(sv));
3376 if (!(fp = PerlIO_open(SvPVX_const(PL_statname), "r"))) {
3377 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname),
3379 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
3382 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(fp), &PL_statcache);
3383 if (PL_laststatval < 0) {
3384 (void)PerlIO_close(fp);
3387 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, NULL);
3388 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3389 (void)PerlIO_close(fp);
3391 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
3392 RETPUSHNO; /* special case NFS directories */
3393 RETPUSHYES; /* null file is anything */
3398 /* now scan s to look for textiness */
3399 /* XXX ASCII dependent code */
3401 #if defined(DOSISH) || defined(USEMYBINMODE)
3402 /* ignore trailing ^Z on short files */
3403 if (len && len < (I32)sizeof(tbuf) && tbuf[len-1] == 26)
3407 for (i = 0; i < len; i++, s++) {
3408 if (!*s) { /* null never allowed in text */
3413 else if (!(isPRINT(*s) || isSPACE(*s)))
3416 else if (*s & 128) {
3418 if (IN_LOCALE_RUNTIME && isALPHA_LC(*s))
3421 /* utf8 characters don't count as odd */
3422 if (UTF8_IS_START(*s)) {
3423 int ulen = UTF8SKIP(s);
3424 if (ulen < len - i) {
3426 for (j = 1; j < ulen; j++) {
3427 if (!UTF8_IS_CONTINUATION(s[j]))
3430 --ulen; /* loop does extra increment */
3440 *s != '\n' && *s != '\r' && *s != '\b' &&
3441 *s != '\t' && *s != '\f' && *s != 27)
3446 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
3457 const char *tmps = NULL;
3461 SV * const sv = POPs;
3462 if (PL_op->op_flags & OPf_SPECIAL) {
3463 gv = gv_fetchsv(sv, 0, SVt_PVIO);
3465 else if (isGV_with_GP(sv)) {
3466 gv = MUTABLE_GV(sv);
3468 else if (SvROK(sv) && isGV_with_GP(SvRV(sv))) {
3469 gv = MUTABLE_GV(SvRV(sv));
3472 tmps = SvPV_nolen_const(sv);
3476 if( !gv && (!tmps || !*tmps) ) {
3477 HV * const table = GvHVn(PL_envgv);
3480 if ( (svp = hv_fetchs(table, "HOME", FALSE))
3481 || (svp = hv_fetchs(table, "LOGDIR", FALSE))
3483 || (svp = hv_fetchs(table, "SYS$LOGIN", FALSE))
3488 deprecate("chdir('') or chdir(undef) as chdir()");
3489 tmps = SvPV_nolen_const(*svp);
3493 TAINT_PROPER("chdir");
3498 TAINT_PROPER("chdir");
3501 IO* const io = GvIO(gv);
3504 PUSHi(fchdir(my_dirfd(IoDIRP(io))) >= 0);
3505 } else if (IoIFP(io)) {
3506 PUSHi(fchdir(PerlIO_fileno(IoIFP(io))) >= 0);
3509 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
3510 report_evil_fh(gv, io, PL_op->op_type);
3511 SETERRNO(EBADF, RMS_IFI);
3516 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
3517 report_evil_fh(gv, io, PL_op->op_type);
3518 SETERRNO(EBADF,RMS_IFI);
3522 DIE(aTHX_ PL_no_func, "fchdir");
3526 PUSHi( PerlDir_chdir(tmps) >= 0 );
3528 /* Clear the DEFAULT element of ENV so we'll get the new value
3530 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
3537 dVAR; dSP; dMARK; dTARGET;
3538 const I32 value = (I32)apply(PL_op->op_type, MARK, SP);
3549 char * const tmps = POPpx;
3550 TAINT_PROPER("chroot");
3551 PUSHi( chroot(tmps) >= 0 );
3554 DIE(aTHX_ PL_no_func, "chroot");
3562 const char * const tmps2 = POPpconstx;
3563 const char * const tmps = SvPV_nolen_const(TOPs);
3564 TAINT_PROPER("rename");
3566 anum = PerlLIO_rename(tmps, tmps2);
3568 if (!(anum = PerlLIO_stat(tmps, &PL_statbuf))) {
3569 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3572 if (PL_euid || PerlLIO_stat(tmps2, &PL_statbuf) < 0 || !S_ISDIR(PL_statbuf.st_mode))
3573 (void)UNLINK(tmps2);
3574 if (!(anum = link(tmps, tmps2)))
3575 anum = UNLINK(tmps);
3583 #if defined(HAS_LINK) || defined(HAS_SYMLINK)
3587 const int op_type = PL_op->op_type;
3591 if (op_type == OP_LINK)
3592 DIE(aTHX_ PL_no_func, "link");
3594 # ifndef HAS_SYMLINK
3595 if (op_type == OP_SYMLINK)
3596 DIE(aTHX_ PL_no_func, "symlink");
3600 const char * const tmps2 = POPpconstx;
3601 const char * const tmps = SvPV_nolen_const(TOPs);
3602 TAINT_PROPER(PL_op_desc[op_type]);
3604 # if defined(HAS_LINK)
3605 # if defined(HAS_SYMLINK)
3606 /* Both present - need to choose which. */
3607 (op_type == OP_LINK) ?
3608 PerlLIO_link(tmps, tmps2) : symlink(tmps, tmps2);
3610 /* Only have link, so calls to pp_symlink will have DIE()d above. */
3611 PerlLIO_link(tmps, tmps2);
3614 # if defined(HAS_SYMLINK)
3615 /* Only have symlink, so calls to pp_link will have DIE()d above. */
3616 symlink(tmps, tmps2);
3621 SETi( result >= 0 );
3628 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
3639 char buf[MAXPATHLEN];
3642 #ifndef INCOMPLETE_TAINTS
3646 len = readlink(tmps, buf, sizeof(buf) - 1);
3654 RETSETUNDEF; /* just pretend it's a normal file */
3658 #if !defined(HAS_MKDIR) || !defined(HAS_RMDIR)
3660 S_dooneliner(pTHX_ const char *cmd, const char *filename)
3662 char * const save_filename = filename;
3667 Size_t size = strlen(cmd) + (strlen(filename) * 2) + 10;
3669 PERL_ARGS_ASSERT_DOONELINER;
3671 Newx(cmdline, size, char);
3672 my_strlcpy(cmdline, cmd, size);
3673 my_strlcat(cmdline, " ", size);
3674 for (s = cmdline + strlen(cmdline); *filename; ) {
3678 if (s - cmdline < size)
3679 my_strlcpy(s, " 2>&1", size - (s - cmdline));
3680 myfp = PerlProc_popen(cmdline, "r");
3684 SV * const tmpsv = sv_newmortal();
3685 /* Need to save/restore 'PL_rs' ?? */
3686 s = sv_gets(tmpsv, myfp, 0);
3687 (void)PerlProc_pclose(myfp);
3691 #ifdef HAS_SYS_ERRLIST
3696 /* you don't see this */
3697 const char * const errmsg =
3698 #ifdef HAS_SYS_ERRLIST
3706 if (instr(s, errmsg)) {
3713 #define EACCES EPERM
3715 if (instr(s, "cannot make"))
3716 SETERRNO(EEXIST,RMS_FEX);
3717 else if (instr(s, "existing file"))
3718 SETERRNO(EEXIST,RMS_FEX);
3719 else if (instr(s, "ile exists"))
3720 SETERRNO(EEXIST,RMS_FEX);
3721 else if (instr(s, "non-exist"))
3722 SETERRNO(ENOENT,RMS_FNF);
3723 else if (instr(s, "does not exist"))
3724 SETERRNO(ENOENT,RMS_FNF);
3725 else if (instr(s, "not empty"))
3726 SETERRNO(EBUSY,SS_DEVOFFLINE);
3727 else if (instr(s, "cannot access"))
3728 SETERRNO(EACCES,RMS_PRV);
3730 SETERRNO(EPERM,RMS_PRV);
3733 else { /* some mkdirs return no failure indication */
3734 anum = (PerlLIO_stat(save_filename, &PL_statbuf) >= 0);
3735 if (PL_op->op_type == OP_RMDIR)
3740 SETERRNO(EACCES,RMS_PRV); /* a guess */
3749 /* This macro removes trailing slashes from a directory name.
3750 * Different operating and file systems take differently to
3751 * trailing slashes. According to POSIX 1003.1 1996 Edition
3752 * any number of trailing slashes should be allowed.
3753 * Thusly we snip them away so that even non-conforming
3754 * systems are happy.
3755 * We should probably do this "filtering" for all
3756 * the functions that expect (potentially) directory names:
3757 * -d, chdir(), chmod(), chown(), chroot(), fcntl()?,
3758 * (mkdir()), opendir(), rename(), rmdir(), stat(). --jhi */
3760 #define TRIMSLASHES(tmps,len,copy) (tmps) = SvPV_const(TOPs, (len)); \
3761 if ((len) > 1 && (tmps)[(len)-1] == '/') { \
3764 } while ((len) > 1 && (tmps)[(len)-1] == '/'); \
3765 (tmps) = savepvn((tmps), (len)); \
3775 const int mode = (MAXARG > 1) ? POPi : 0777;
3777 TRIMSLASHES(tmps,len,copy);
3779 TAINT_PROPER("mkdir");
3781 SETi( PerlDir_mkdir(tmps, mode) >= 0 );
3785 SETi( dooneliner("mkdir", tmps) );
3786 oldumask = PerlLIO_umask(0);
3787 PerlLIO_umask(oldumask);
3788 PerlLIO_chmod(tmps, (mode & ~oldumask) & 0777);
3803 TRIMSLASHES(tmps,len,copy);
3804 TAINT_PROPER("rmdir");
3806 SETi( PerlDir_rmdir(tmps) >= 0 );
3808 SETi( dooneliner("rmdir", tmps) );
3815 /* Directory calls. */
3819 #if defined(Direntry_t) && defined(HAS_READDIR)
3821 const char * const dirname = POPpconstx;
3822 GV * const gv = MUTABLE_GV(POPs);
3823 register IO * const io = GvIOn(gv);
3828 if ((IoIFP(io) || IoOFP(io)) && ckWARN2(WARN_IO, WARN_DEPRECATED))
3829 Perl_warner(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
3830 "Opening filehandle %s also as a directory", GvENAME(gv));
3832 PerlDir_close(IoDIRP(io));
3833 if (!(IoDIRP(io) = PerlDir_open(dirname)))
3839 SETERRNO(EBADF,RMS_DIR);
3842 DIE(aTHX_ PL_no_dir_func, "opendir");
3848 #if !defined(Direntry_t) || !defined(HAS_READDIR)
3849 DIE(aTHX_ PL_no_dir_func, "readdir");
3851 #if !defined(I_DIRENT) && !defined(VMS)
3852 Direntry_t *readdir (DIR *);
3858 const I32 gimme = GIMME;
3859 GV * const gv = MUTABLE_GV(POPs);
3860 register const Direntry_t *dp;
3861 register IO * const io = GvIOn(gv);
3863 if (!io || !IoDIRP(io)) {
3864 if(ckWARN(WARN_IO)) {
3865 Perl_warner(aTHX_ packWARN(WARN_IO),
3866 "readdir() attempted on invalid dirhandle %s", GvENAME(gv));
3872 dp = (Direntry_t *)PerlDir_read(IoDIRP(io));
3876 sv = newSVpvn(dp->d_name, dp->d_namlen);
3878 sv = newSVpv(dp->d_name, 0);
3880 #ifndef INCOMPLETE_TAINTS
3881 if (!(IoFLAGS(io) & IOf_UNTAINT))
3885 } while (gimme == G_ARRAY);
3887 if (!dp && gimme != G_ARRAY)
3894 SETERRNO(EBADF,RMS_ISI);
3895 if (GIMME == G_ARRAY)
3904 #if defined(HAS_TELLDIR) || defined(telldir)
3906 /* XXX does _anyone_ need this? --AD 2/20/1998 */
3907 /* XXX netbsd still seemed to.
3908 XXX HAS_TELLDIR_PROTO is new style, NEED_TELLDIR_PROTO is old style.
3909 --JHI 1999-Feb-02 */
3910 # if !defined(HAS_TELLDIR_PROTO) || defined(NEED_TELLDIR_PROTO)
3911 long telldir (DIR *);
3913 GV * const gv = MUTABLE_GV(POPs);
3914 register IO * const io = GvIOn(gv);
3916 if (!io || !IoDIRP(io)) {
3917 if(ckWARN(WARN_IO)) {
3918 Perl_warner(aTHX_ packWARN(WARN_IO),
3919 "telldir() attempted on invalid dirhandle %s", GvENAME(gv));
3924 PUSHi( PerlDir_tell(IoDIRP(io)) );
3928 SETERRNO(EBADF,RMS_ISI);
3931 DIE(aTHX_ PL_no_dir_func, "telldir");
3937 #if defined(HAS_SEEKDIR) || defined(seekdir)
3939 const long along = POPl;
3940 GV * const gv = MUTABLE_GV(POPs);
3941 register IO * const io = GvIOn(gv);
3943 if (!io || !IoDIRP(io)) {
3944 if(ckWARN(WARN_IO)) {
3945 Perl_warner(aTHX_ packWARN(WARN_IO),
3946 "seekdir() attempted on invalid dirhandle %s", GvENAME(gv));
3950 (void)PerlDir_seek(IoDIRP(io), along);
3955 SETERRNO(EBADF,RMS_ISI);
3958 DIE(aTHX_ PL_no_dir_func, "seekdir");
3964 #if defined(HAS_REWINDDIR) || defined(rewinddir)
3966 GV * const gv = MUTABLE_GV(POPs);
3967 register IO * const io = GvIOn(gv);
3969 if (!io || !IoDIRP(io)) {
3970 if(ckWARN(WARN_IO)) {
3971 Perl_warner(aTHX_ packWARN(WARN_IO),
3972 "rewinddir() attempted on invalid dirhandle %s", GvENAME(gv));
3976 (void)PerlDir_rewind(IoDIRP(io));
3980 SETERRNO(EBADF,RMS_ISI);
3983 DIE(aTHX_ PL_no_dir_func, "rewinddir");
3989 #if defined(Direntry_t) && defined(HAS_READDIR)
3991 GV * const gv = MUTABLE_GV(POPs);
3992 register IO * const io = GvIOn(gv);
3994 if (!io || !IoDIRP(io)) {
3995 if(ckWARN(WARN_IO)) {
3996 Perl_warner(aTHX_ packWARN(WARN_IO),
3997 "closedir() attempted on invalid dirhandle %s", GvENAME(gv));
4001 #ifdef VOID_CLOSEDIR
4002 PerlDir_close(IoDIRP(io));
4004 if (PerlDir_close(IoDIRP(io)) < 0) {
4005 IoDIRP(io) = 0; /* Don't try to close again--coredumps on SysV */
4014 SETERRNO(EBADF,RMS_IFI);
4017 DIE(aTHX_ PL_no_dir_func, "closedir");
4021 /* Process control. */
4030 PERL_FLUSHALL_FOR_CHILD;
4031 childpid = PerlProc_fork();
4035 GV * const tmpgv = gv_fetchpvs("$", GV_ADD|GV_NOTQUAL, SVt_PV);
4037 SvREADONLY_off(GvSV(tmpgv));
4038 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
4039 SvREADONLY_on(GvSV(tmpgv));
4041 #ifdef THREADS_HAVE_PIDS
4042 PL_ppid = (IV)getppid();
4044 #ifdef PERL_USES_PL_PIDSTATUS
4045 hv_clear(PL_pidstatus); /* no kids, so don't wait for 'em */
4051 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4056 PERL_FLUSHALL_FOR_CHILD;
4057 childpid = PerlProc_fork();
4063 DIE(aTHX_ PL_no_func, "fork");
4070 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(__LIBCATAMOUNT__)
4075 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
4076 childpid = wait4pid(-1, &argflags, 0);
4078 while ((childpid = wait4pid(-1, &argflags, 0)) == -1 &&
4083 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4084 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
4085 STATUS_NATIVE_CHILD_SET((childpid && childpid != -1) ? argflags : -1);
4087 STATUS_NATIVE_CHILD_SET((childpid > 0) ? argflags : -1);
4092 DIE(aTHX_ PL_no_func, "wait");
4098 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(__LIBCATAMOUNT__)
4100 const int optype = POPi;
4101 const Pid_t pid = TOPi;
4105 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
4106 result = wait4pid(pid, &argflags, optype);
4108 while ((result = wait4pid(pid, &argflags, optype)) == -1 &&
4113 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4114 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
4115 STATUS_NATIVE_CHILD_SET((result && result != -1) ? argflags : -1);
4117 STATUS_NATIVE_CHILD_SET((result > 0) ? argflags : -1);
4122 DIE(aTHX_ PL_no_func, "waitpid");
4128 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
4129 #if defined(__LIBCATAMOUNT__)
4130 PL_statusvalue = -1;
4139 while (++MARK <= SP) {
4140 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
4145 TAINT_PROPER("system");
4147 PERL_FLUSHALL_FOR_CHILD;
4148 #if (defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(OS2) || defined(PERL_MICRO)
4154 if (PerlProc_pipe(pp) >= 0)
4156 while ((childpid = PerlProc_fork()) == -1) {
4157 if (errno != EAGAIN) {
4162 PerlLIO_close(pp[0]);
4163 PerlLIO_close(pp[1]);
4170 Sigsave_t ihand,qhand; /* place to save signals during system() */
4174 PerlLIO_close(pp[1]);
4176 rsignal_save(SIGINT, (Sighandler_t) SIG_IGN, &ihand);
4177 rsignal_save(SIGQUIT, (Sighandler_t) SIG_IGN, &qhand);
4180 result = wait4pid(childpid, &status, 0);
4181 } while (result == -1 && errno == EINTR);
4183 (void)rsignal_restore(SIGINT, &ihand);
4184 (void)rsignal_restore(SIGQUIT, &qhand);
4186 STATUS_NATIVE_CHILD_SET(result == -1 ? -1 : status);
4187 do_execfree(); /* free any memory child malloced on fork */
4194 while (n < sizeof(int)) {
4195 n1 = PerlLIO_read(pp[0],
4196 (void*)(((char*)&errkid)+n),
4202 PerlLIO_close(pp[0]);
4203 if (n) { /* Error */
4204 if (n != sizeof(int))
4205 DIE(aTHX_ "panic: kid popen errno read");
4206 errno = errkid; /* Propagate errno from kid */
4207 STATUS_NATIVE_CHILD_SET(-1);
4210 XPUSHi(STATUS_CURRENT);
4214 PerlLIO_close(pp[0]);
4215 #if defined(HAS_FCNTL) && defined(F_SETFD)
4216 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
4219 if (PL_op->op_flags & OPf_STACKED) {
4220 SV * const really = *++MARK;
4221 value = (I32)do_aexec5(really, MARK, SP, pp[1], did_pipes);
4223 else if (SP - MARK != 1)
4224 value = (I32)do_aexec5(NULL, MARK, SP, pp[1], did_pipes);
4226 value = (I32)do_exec3(SvPVx_nolen(sv_mortalcopy(*SP)), pp[1], did_pipes);
4230 #else /* ! FORK or VMS or OS/2 */
4233 if (PL_op->op_flags & OPf_STACKED) {
4234 SV * const really = *++MARK;
4235 # if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__) || defined(__VMS)
4236 value = (I32)do_aspawn(really, MARK, SP);
4238 value = (I32)do_aspawn(really, (void **)MARK, (void **)SP);
4241 else if (SP - MARK != 1) {
4242 # if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__) || defined(__VMS)
4243 value = (I32)do_aspawn(NULL, MARK, SP);
4245 value = (I32)do_aspawn(NULL, (void **)MARK, (void **)SP);
4249 value = (I32)do_spawn(SvPVx_nolen(sv_mortalcopy(*SP)));
4251 if (PL_statusvalue == -1) /* hint that value must be returned as is */
4253 STATUS_NATIVE_CHILD_SET(value);
4256 XPUSHi(result ? value : STATUS_CURRENT);
4257 #endif /* !FORK or VMS or OS/2 */
4264 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
4269 while (++MARK <= SP) {
4270 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
4275 TAINT_PROPER("exec");
4277 PERL_FLUSHALL_FOR_CHILD;
4278 if (PL_op->op_flags & OPf_STACKED) {
4279 SV * const really = *++MARK;
4280 value = (I32)do_aexec(really, MARK, SP);
4282 else if (SP - MARK != 1)
4284 value = (I32)vms_do_aexec(NULL, MARK, SP);
4288 (void ) do_aspawn(NULL, MARK, SP);
4292 value = (I32)do_aexec(NULL, MARK, SP);
4297 value = (I32)vms_do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
4300 (void) do_spawn(SvPVx_nolen(sv_mortalcopy(*SP)));
4303 value = (I32)do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
4317 # ifdef THREADS_HAVE_PIDS
4318 if (PL_ppid != 1 && getppid() == 1)
4319 /* maybe the parent process has died. Refresh ppid cache */
4323 XPUSHi( getppid() );
4327 DIE(aTHX_ PL_no_func, "getppid");
4336 const Pid_t pid = (MAXARG < 1) ? 0 : SvIVx(POPs);
4339 pgrp = (I32)BSD_GETPGRP(pid);
4341 if (pid != 0 && pid != PerlProc_getpid())
4342 DIE(aTHX_ "POSIX getpgrp can't take an argument");
4348 DIE(aTHX_ PL_no_func, "getpgrp()");
4368 TAINT_PROPER("setpgrp");
4370 SETi( BSD_SETPGRP(pid, pgrp) >= 0 );
4372 if ((pgrp != 0 && pgrp != PerlProc_getpid())
4373 || (pid != 0 && pid != PerlProc_getpid()))
4375 DIE(aTHX_ "setpgrp can't take arguments");
4377 SETi( setpgrp() >= 0 );
4378 #endif /* USE_BSDPGRP */
4381 DIE(aTHX_ PL_no_func, "setpgrp()");
4387 #ifdef HAS_GETPRIORITY
4389 const int who = POPi;
4390 const int which = TOPi;
4391 SETi( getpriority(which, who) );
4394 DIE(aTHX_ PL_no_func, "getpriority()");
4400 #ifdef HAS_SETPRIORITY
4402 const int niceval = POPi;
4403 const int who = POPi;
4404 const int which = TOPi;
4405 TAINT_PROPER("setpriority");
4406 SETi( setpriority(which, who, niceval) >= 0 );
4409 DIE(aTHX_ PL_no_func, "setpriority()");
4419 XPUSHn( time(NULL) );
4421 XPUSHi( time(NULL) );
4433 (void)PerlProc_times(&PL_timesbuf);
4435 (void)PerlProc_times((tbuffer_t *)&PL_timesbuf); /* time.h uses different name for */
4436 /* struct tms, though same data */
4440 mPUSHn(((NV)PL_timesbuf.tms_utime)/(NV)PL_clocktick);
4441 if (GIMME == G_ARRAY) {
4442 mPUSHn(((NV)PL_timesbuf.tms_stime)/(NV)PL_clocktick);
4443 mPUSHn(((NV)PL_timesbuf.tms_cutime)/(NV)PL_clocktick);
4444 mPUSHn(((NV)PL_timesbuf.tms_cstime)/(NV)PL_clocktick);
4452 if (GIMME == G_ARRAY) {
4459 DIE(aTHX_ "times not implemented");
4461 #endif /* HAS_TIMES */
4471 const char *opname = PL_op->op_type == OP_LOCALTIME ? "localtime" : "gmtime";
4472 static const char * const dayname[] =
4473 {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
4474 static const char * const monname[] =
4475 {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
4476 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
4481 when = (Time64_T)now;
4484 double input = Perl_floor(POPn);
4485 when = (Time64_T)input;
4486 if (when != input && ckWARN(WARN_OVERFLOW)) {
4487 Perl_warner(aTHX_ packWARN(WARN_OVERFLOW),
4488 "%s(%.0f) too large", opname, input);
4492 if (PL_op->op_type == OP_LOCALTIME)
4493 err = S_localtime64_r(&when, &tmbuf);
4495 err = S_gmtime64_r(&when, &tmbuf);
4497 if (err == NULL && ckWARN(WARN_OVERFLOW)) {
4498 /* XXX %lld broken for quads */
4499 Perl_warner(aTHX_ packWARN(WARN_OVERFLOW),
4500 "%s(%.0f) failed", opname, (double)when);
4503 if (GIMME != G_ARRAY) { /* scalar context */
4505 /* XXX newSVpvf()'s %lld type is broken, so cheat with a double */
4506 double year = (double)tmbuf.tm_year + 1900;
4513 tsv = Perl_newSVpvf(aTHX_ "%s %s %2d %02d:%02d:%02d %.0f",
4514 dayname[tmbuf.tm_wday],
4515 monname[tmbuf.tm_mon],
4523 else { /* list context */
4529 mPUSHi(tmbuf.tm_sec);
4530 mPUSHi(tmbuf.tm_min);
4531 mPUSHi(tmbuf.tm_hour);
4532 mPUSHi(tmbuf.tm_mday);
4533 mPUSHi(tmbuf.tm_mon);
4534 mPUSHn(tmbuf.tm_year);
4535 mPUSHi(tmbuf.tm_wday);
4536 mPUSHi(tmbuf.tm_yday);
4537 mPUSHi(tmbuf.tm_isdst);
4548 anum = alarm((unsigned int)anum);
4555 DIE(aTHX_ PL_no_func, "alarm");
4566 (void)time(&lasttime);
4571 PerlProc_sleep((unsigned int)duration);
4574 XPUSHi(when - lasttime);
4578 /* Shared memory. */
4579 /* Merged with some message passing. */
4583 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4584 dVAR; dSP; dMARK; dTARGET;
4585 const int op_type = PL_op->op_type;
4590 value = (I32)(do_msgsnd(MARK, SP) >= 0);
4593 value = (I32)(do_msgrcv(MARK, SP) >= 0);
4596 value = (I32)(do_semop(MARK, SP) >= 0);
4599 value = (I32)(do_shmio(op_type, MARK, SP) >= 0);
4615 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4616 dVAR; dSP; dMARK; dTARGET;
4617 const int anum = do_ipcget(PL_op->op_type, MARK, SP);
4624 DIE(aTHX_ "System V IPC is not implemented on this machine");
4630 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4631 dVAR; dSP; dMARK; dTARGET;
4632 const int anum = do_ipcctl(PL_op->op_type, MARK, SP);
4640 PUSHp(zero_but_true, ZBTLEN);
4648 /* I can't const this further without getting warnings about the types of
4649 various arrays passed in from structures. */
4651 S_space_join_names_mortal(pTHX_ char *const *array)
4655 PERL_ARGS_ASSERT_SPACE_JOIN_NAMES_MORTAL;
4657 if (array && *array) {
4658 target = newSVpvs_flags("", SVs_TEMP);
4660 sv_catpv(target, *array);
4663 sv_catpvs(target, " ");
4666 target = sv_mortalcopy(&PL_sv_no);
4671 /* Get system info. */
4675 #if defined(HAS_GETHOSTBYNAME) || defined(HAS_GETHOSTBYADDR) || defined(HAS_GETHOSTENT)
4677 I32 which = PL_op->op_type;
4678 register char **elem;
4680 #ifndef HAS_GETHOST_PROTOS /* XXX Do we need individual probes? */
4681 struct hostent *gethostbyaddr(Netdb_host_t, Netdb_hlen_t, int);
4682 struct hostent *gethostbyname(Netdb_name_t);
4683 struct hostent *gethostent(void);
4685 struct hostent *hent;
4689 if (which == OP_GHBYNAME) {
4690 #ifdef HAS_GETHOSTBYNAME
4691 const char* const name = POPpbytex;
4692 hent = PerlSock_gethostbyname(name);
4694 DIE(aTHX_ PL_no_sock_func, "gethostbyname");
4697 else if (which == OP_GHBYADDR) {
4698 #ifdef HAS_GETHOSTBYADDR
4699 const int addrtype = POPi;
4700 SV * const addrsv = POPs;
4702 const char *addr = (char *)SvPVbyte(addrsv, addrlen);
4704 hent = PerlSock_gethostbyaddr(addr, (Netdb_hlen_t) addrlen, addrtype);
4706 DIE(aTHX_ PL_no_sock_func, "gethostbyaddr");
4710 #ifdef HAS_GETHOSTENT
4711 hent = PerlSock_gethostent();
4713 DIE(aTHX_ PL_no_sock_func, "gethostent");
4716 #ifdef HOST_NOT_FOUND
4718 #ifdef USE_REENTRANT_API
4719 # ifdef USE_GETHOSTENT_ERRNO
4720 h_errno = PL_reentrant_buffer->_gethostent_errno;
4723 STATUS_UNIX_SET(h_errno);
4727 if (GIMME != G_ARRAY) {
4728 PUSHs(sv = sv_newmortal());
4730 if (which == OP_GHBYNAME) {
4732 sv_setpvn(sv, hent->h_addr, hent->h_length);
4735 sv_setpv(sv, (char*)hent->h_name);
4741 mPUSHs(newSVpv((char*)hent->h_name, 0));
4742 PUSHs(space_join_names_mortal(hent->h_aliases));
4743 mPUSHi(hent->h_addrtype);
4744 len = hent->h_length;
4747 for (elem = hent->h_addr_list; elem && *elem; elem++) {
4748 mXPUSHp(*elem, len);
4752 mPUSHp(hent->h_addr, len);
4754 PUSHs(sv_mortalcopy(&PL_sv_no));
4759 DIE(aTHX_ PL_no_sock_func, "gethostent");
4765 #if defined(HAS_GETNETBYNAME) || defined(HAS_GETNETBYADDR) || defined(HAS_GETNETENT)
4767 I32 which = PL_op->op_type;
4769 #ifndef HAS_GETNET_PROTOS /* XXX Do we need individual probes? */
4770 struct netent *getnetbyaddr(Netdb_net_t, int);
4771 struct netent *getnetbyname(Netdb_name_t);
4772 struct netent *getnetent(void);
4774 struct netent *nent;
4776 if (which == OP_GNBYNAME){
4777 #ifdef HAS_GETNETBYNAME
4778 const char * const name = POPpbytex;
4779 nent = PerlSock_getnetbyname(name);
4781 DIE(aTHX_ PL_no_sock_func, "getnetbyname");
4784 else if (which == OP_GNBYADDR) {
4785 #ifdef HAS_GETNETBYADDR
4786 const int addrtype = POPi;
4787 const Netdb_net_t addr = (Netdb_net_t) (U32)POPu;
4788 nent = PerlSock_getnetbyaddr(addr, addrtype);
4790 DIE(aTHX_ PL_no_sock_func, "getnetbyaddr");
4794 #ifdef HAS_GETNETENT
4795 nent = PerlSock_getnetent();
4797 DIE(aTHX_ PL_no_sock_func, "getnetent");
4800 #ifdef HOST_NOT_FOUND
4802 #ifdef USE_REENTRANT_API
4803 # ifdef USE_GETNETENT_ERRNO
4804 h_errno = PL_reentrant_buffer->_getnetent_errno;
4807 STATUS_UNIX_SET(h_errno);
4812 if (GIMME != G_ARRAY) {
4813 PUSHs(sv = sv_newmortal());
4815 if (which == OP_GNBYNAME)
4816 sv_setiv(sv, (IV)nent->n_net);
4818 sv_setpv(sv, nent->n_name);
4824 mPUSHs(newSVpv(nent->n_name, 0));
4825 PUSHs(space_join_names_mortal(nent->n_aliases));
4826 mPUSHi(nent->n_addrtype);
4827 mPUSHi(nent->n_net);
4832 DIE(aTHX_ PL_no_sock_func, "getnetent");
4838 #if defined(HAS_GETPROTOBYNAME) || defined(HAS_GETPROTOBYNUMBER) || defined(HAS_GETPROTOENT)
4840 I32 which = PL_op->op_type;
4842 #ifndef HAS_GETPROTO_PROTOS /* XXX Do we need individual probes? */
4843 struct protoent *getprotobyname(Netdb_name_t);
4844 struct protoent *getprotobynumber(int);
4845 struct protoent *getprotoent(void);
4847 struct protoent *pent;
4849 if (which == OP_GPBYNAME) {
4850 #ifdef HAS_GETPROTOBYNAME
4851 const char* const name = POPpbytex;
4852 pent = PerlSock_getprotobyname(name);
4854 DIE(aTHX_ PL_no_sock_func, "getprotobyname");
4857 else if (which == OP_GPBYNUMBER) {
4858 #ifdef HAS_GETPROTOBYNUMBER
4859 const int number = POPi;
4860 pent = PerlSock_getprotobynumber(number);
4862 DIE(aTHX_ PL_no_sock_func, "getprotobynumber");
4866 #ifdef HAS_GETPROTOENT
4867 pent = PerlSock_getprotoent();
4869 DIE(aTHX_ PL_no_sock_func, "getprotoent");
4873 if (GIMME != G_ARRAY) {
4874 PUSHs(sv = sv_newmortal());
4876 if (which == OP_GPBYNAME)
4877 sv_setiv(sv, (IV)pent->p_proto);
4879 sv_setpv(sv, pent->p_name);
4885 mPUSHs(newSVpv(pent->p_name, 0));
4886 PUSHs(space_join_names_mortal(pent->p_aliases));
4887 mPUSHi(pent->p_proto);
4892 DIE(aTHX_ PL_no_sock_func, "getprotoent");
4898 #if defined(HAS_GETSERVBYNAME) || defined(HAS_GETSERVBYPORT) || defined(HAS_GETSERVENT)
4900 I32 which = PL_op->op_type;
4902 #ifndef HAS_GETSERV_PROTOS /* XXX Do we need individual probes? */
4903 struct servent *getservbyname(Netdb_name_t, Netdb_name_t);
4904 struct servent *getservbyport(int, Netdb_name_t);
4905 struct servent *getservent(void);
4907 struct servent *sent;
4909 if (which == OP_GSBYNAME) {
4910 #ifdef HAS_GETSERVBYNAME
4911 const char * const proto = POPpbytex;
4912 const char * const name = POPpbytex;
4913 sent = PerlSock_getservbyname(name, (proto && !*proto) ? NULL : proto);
4915 DIE(aTHX_ PL_no_sock_func, "getservbyname");
4918 else if (which == OP_GSBYPORT) {
4919 #ifdef HAS_GETSERVBYPORT
4920 const char * const proto = POPpbytex;
4921 unsigned short port = (unsigned short)POPu;
4923 port = PerlSock_htons(port);
4925 sent = PerlSock_getservbyport(port, (proto && !*proto) ? NULL : proto);
4927 DIE(aTHX_ PL_no_sock_func, "getservbyport");
4931 #ifdef HAS_GETSERVENT
4932 sent = PerlSock_getservent();
4934 DIE(aTHX_ PL_no_sock_func, "getservent");
4938 if (GIMME != G_ARRAY) {
4939 PUSHs(sv = sv_newmortal());
4941 if (which == OP_GSBYNAME) {
4943 sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
4945 sv_setiv(sv, (IV)(sent->s_port));
4949 sv_setpv(sv, sent->s_name);
4955 mPUSHs(newSVpv(sent->s_name, 0));
4956 PUSHs(space_join_names_mortal(sent->s_aliases));
4958 mPUSHi(PerlSock_ntohs(sent->s_port));
4960 mPUSHi(sent->s_port);
4962 mPUSHs(newSVpv(sent->s_proto, 0));
4967 DIE(aTHX_ PL_no_sock_func, "getservent");
4973 #ifdef HAS_SETHOSTENT
4975 PerlSock_sethostent(TOPi);
4978 DIE(aTHX_ PL_no_sock_func, "sethostent");
4984 #ifdef HAS_SETNETENT
4986 (void)PerlSock_setnetent(TOPi);
4989 DIE(aTHX_ PL_no_sock_func, "setnetent");
4995 #ifdef HAS_SETPROTOENT
4997 (void)PerlSock_setprotoent(TOPi);
5000 DIE(aTHX_ PL_no_sock_func, "setprotoent");
5006 #ifdef HAS_SETSERVENT
5008 (void)PerlSock_setservent(TOPi);
5011 DIE(aTHX_ PL_no_sock_func, "setservent");
5017 #ifdef HAS_ENDHOSTENT
5019 PerlSock_endhostent();
5023 DIE(aTHX_ PL_no_sock_func, "endhostent");
5029 #ifdef HAS_ENDNETENT
5031 PerlSock_endnetent();
5035 DIE(aTHX_ PL_no_sock_func, "endnetent");
5041 #ifdef HAS_ENDPROTOENT
5043 PerlSock_endprotoent();
5047 DIE(aTHX_ PL_no_sock_func, "endprotoent");
5053 #ifdef HAS_ENDSERVENT
5055 PerlSock_endservent();
5059 DIE(aTHX_ PL_no_sock_func, "endservent");
5067 I32 which = PL_op->op_type;
5069 struct passwd *pwent = NULL;
5071 * We currently support only the SysV getsp* shadow password interface.
5072 * The interface is declared in <shadow.h> and often one needs to link
5073 * with -lsecurity or some such.
5074 * This interface is used at least by Solaris, HP-UX, IRIX, and Linux.
5077 * AIX getpwnam() is clever enough to return the encrypted password
5078 * only if the caller (euid?) is root.
5080 * There are at least three other shadow password APIs. Many platforms
5081 * seem to contain more than one interface for accessing the shadow
5082 * password databases, possibly for compatibility reasons.
5083 * The getsp*() is by far he simplest one, the other two interfaces
5084 * are much more complicated, but also very similar to each other.
5089 * struct pr_passwd *getprpw*();
5090 * The password is in
5091 * char getprpw*(...).ufld.fd_encrypt[]
5092 * Mention HAS_GETPRPWNAM here so that Configure probes for it.
5097 * struct es_passwd *getespw*();
5098 * The password is in
5099 * char *(getespw*(...).ufld.fd_encrypt)
5100 * Mention HAS_GETESPWNAM here so that Configure probes for it.
5103 * struct userpw *getuserpw();
5104 * The password is in
5105 * char *(getuserpw(...)).spw_upw_passwd
5106 * (but the de facto standard getpwnam() should work okay)
5108 * Mention I_PROT here so that Configure probes for it.
5110 * In HP-UX for getprpw*() the manual page claims that one should include
5111 * <hpsecurity.h> instead of <sys/security.h>, but that is not needed
5112 * if one includes <shadow.h> as that includes <hpsecurity.h>,
5113 * and pp_sys.c already includes <shadow.h> if there is such.
5115 * Note that <sys/security.h> is already probed for, but currently
5116 * it is only included in special cases.
5118 * In Digital UNIX/Tru64 if using the getespw*() (which seems to be
5119 * be preferred interface, even though also the getprpw*() interface
5120 * is available) one needs to link with -lsecurity -ldb -laud -lm.
5121 * One also needs to call set_auth_parameters() in main() before
5122 * doing anything else, whether one is using getespw*() or getprpw*().
5124 * Note that accessing the shadow databases can be magnitudes
5125 * slower than accessing the standard databases.
5130 # if defined(__CYGWIN__) && defined(USE_REENTRANT_API)
5131 /* Cygwin 1.5.3-1 has buggy getpwnam_r() and getpwuid_r():
5132 * the pw_comment is left uninitialized. */
5133 PL_reentrant_buffer->_pwent_struct.pw_comment = NULL;
5139 const char* const name = POPpbytex;
5140 pwent = getpwnam(name);
5146 pwent = getpwuid(uid);
5150 # ifdef HAS_GETPWENT
5152 #ifdef POSIX_BC /* In some cases pw_passwd has invalid addresses */
5153 if (pwent) pwent = getpwnam(pwent->pw_name);
5156 DIE(aTHX_ PL_no_func, "getpwent");
5162 if (GIMME != G_ARRAY) {
5163 PUSHs(sv = sv_newmortal());
5165 if (which == OP_GPWNAM)
5166 # if Uid_t_sign <= 0
5167 sv_setiv(sv, (IV)pwent->pw_uid);
5169 sv_setuv(sv, (UV)pwent->pw_uid);
5172 sv_setpv(sv, pwent->pw_name);
5178 mPUSHs(newSVpv(pwent->pw_name, 0));
5182 /* If we have getspnam(), we try to dig up the shadow
5183 * password. If we are underprivileged, the shadow
5184 * interface will set the errno to EACCES or similar,
5185 * and return a null pointer. If this happens, we will
5186 * use the dummy password (usually "*" or "x") from the
5187 * standard password database.
5189 * In theory we could skip the shadow call completely
5190 * if euid != 0 but in practice we cannot know which
5191 * security measures are guarding the shadow databases
5192 * on a random platform.
5194 * Resist the urge to use additional shadow interfaces.
5195 * Divert the urge to writing an extension instead.
5198 /* Some AIX setups falsely(?) detect some getspnam(), which
5199 * has a different API than the Solaris/IRIX one. */
5200 # if defined(HAS_GETSPNAM) && !defined(_AIX)
5203 const struct spwd * const spwent = getspnam(pwent->pw_name);
5204 /* Save and restore errno so that
5205 * underprivileged attempts seem
5206 * to have never made the unsccessful
5207 * attempt to retrieve the shadow password. */
5209 if (spwent && spwent->sp_pwdp)
5210 sv_setpv(sv, spwent->sp_pwdp);
5214 if (!SvPOK(sv)) /* Use the standard password, then. */
5215 sv_setpv(sv, pwent->pw_passwd);
5218 # ifndef INCOMPLETE_TAINTS
5219 /* passwd is tainted because user himself can diddle with it.
5220 * admittedly not much and in a very limited way, but nevertheless. */
5224 # if Uid_t_sign <= 0
5225 mPUSHi(pwent->pw_uid);
5227 mPUSHu(pwent->pw_uid);
5230 # if Uid_t_sign <= 0
5231 mPUSHi(pwent->pw_gid);
5233 mPUSHu(pwent->pw_gid);
5235 /* pw_change, pw_quota, and pw_age are mutually exclusive--
5236 * because of the poor interface of the Perl getpw*(),
5237 * not because there's some standard/convention saying so.
5238 * A better interface would have been to return a hash,
5239 * but we are accursed by our history, alas. --jhi. */
5241 mPUSHi(pwent->pw_change);
5244 mPUSHi(pwent->pw_quota);
5247 mPUSHs(newSVpv(pwent->pw_age, 0));
5249 /* I think that you can never get this compiled, but just in case. */
5250 PUSHs(sv_mortalcopy(&PL_sv_no));
5255 /* pw_class and pw_comment are mutually exclusive--.
5256 * see the above note for pw_change, pw_quota, and pw_age. */
5258 mPUSHs(newSVpv(pwent->pw_class, 0));
5261 mPUSHs(newSVpv(pwent->pw_comment, 0));
5263 /* I think that you can never get this compiled, but just in case. */
5264 PUSHs(sv_mortalcopy(&PL_sv_no));
5269 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_gecos, 0)));
5271 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5273 # ifndef INCOMPLETE_TAINTS
5274 /* pw_gecos is tainted because user himself can diddle with it. */
5278 mPUSHs(newSVpv(pwent->pw_dir, 0));
5280 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_shell, 0)));
5281 # ifndef INCOMPLETE_TAINTS
5282 /* pw_shell is tainted because user himself can diddle with it. */
5287 mPUSHi(pwent->pw_expire);
5292 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5298 #if defined(HAS_PASSWD) && defined(HAS_SETPWENT)
5303 DIE(aTHX_ PL_no_func, "setpwent");
5309 #if defined(HAS_PASSWD) && defined(HAS_ENDPWENT)
5314 DIE(aTHX_ PL_no_func, "endpwent");
5322 const I32 which = PL_op->op_type;
5323 const struct group *grent;
5325 if (which == OP_GGRNAM) {
5326 const char* const name = POPpbytex;
5327 grent = (const struct group *)getgrnam(name);
5329 else if (which == OP_GGRGID) {
5330 const Gid_t gid = POPi;
5331 grent = (const struct group *)getgrgid(gid);
5335 grent = (struct group *)getgrent();
5337 DIE(aTHX_ PL_no_func, "getgrent");
5341 if (GIMME != G_ARRAY) {
5342 SV * const sv = sv_newmortal();
5346 if (which == OP_GGRNAM)
5348 sv_setiv(sv, (IV)grent->gr_gid);
5350 sv_setuv(sv, (UV)grent->gr_gid);
5353 sv_setpv(sv, grent->gr_name);
5359 mPUSHs(newSVpv(grent->gr_name, 0));
5362 mPUSHs(newSVpv(grent->gr_passwd, 0));
5364 PUSHs(sv_mortalcopy(&PL_sv_no));
5368 mPUSHi(grent->gr_gid);
5370 mPUSHu(grent->gr_gid);
5373 #if !(defined(_CRAYMPP) && defined(USE_REENTRANT_API))
5374 /* In UNICOS/mk (_CRAYMPP) the multithreading
5375 * versions (getgrnam_r, getgrgid_r)
5376 * seem to return an illegal pointer
5377 * as the group members list, gr_mem.
5378 * getgrent() doesn't even have a _r version
5379 * but the gr_mem is poisonous anyway.
5380 * So yes, you cannot get the list of group
5381 * members if building multithreaded in UNICOS/mk. */
5382 PUSHs(space_join_names_mortal(grent->gr_mem));
5388 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5394 #if defined(HAS_GROUP) && defined(HAS_SETGRENT)
5399 DIE(aTHX_ PL_no_func, "setgrent");
5405 #if defined(HAS_GROUP) && defined(HAS_ENDGRENT)
5410 DIE(aTHX_ PL_no_func, "endgrent");
5420 if (!(tmps = PerlProc_getlogin()))
5422 PUSHp(tmps, strlen(tmps));
5425 DIE(aTHX_ PL_no_func, "getlogin");
5429 /* Miscellaneous. */
5434 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
5435 register I32 items = SP - MARK;
5436 unsigned long a[20];
5441 while (++MARK <= SP) {
5442 if (SvTAINTED(*MARK)) {
5448 TAINT_PROPER("syscall");
5451 /* This probably won't work on machines where sizeof(long) != sizeof(int)
5452 * or where sizeof(long) != sizeof(char*). But such machines will
5453 * not likely have syscall implemented either, so who cares?
5455 while (++MARK <= SP) {
5456 if (SvNIOK(*MARK) || !i)
5457 a[i++] = SvIV(*MARK);
5458 else if (*MARK == &PL_sv_undef)
5461 a[i++] = (unsigned long)SvPV_force_nolen(*MARK);
5467 DIE(aTHX_ "Too many args to syscall");
5469 DIE(aTHX_ "Too few args to syscall");
5471 retval = syscall(a[0]);
5474 retval = syscall(a[0],a[1]);
5477 retval = syscall(a[0],a[1],a[2]);
5480 retval = syscall(a[0],a[1],a[2],a[3]);
5483 retval = syscall(a[0],a[1],a[2],a[3],a[4]);
5486 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5]);
5489 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6]);
5492 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7]);
5496 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8]);
5499 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9]);
5502 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5506 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5510 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5514 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5515 a[10],a[11],a[12],a[13]);
5517 #endif /* atarist */
5523 DIE(aTHX_ PL_no_func, "syscall");
5527 #ifdef FCNTL_EMULATE_FLOCK
5529 /* XXX Emulate flock() with fcntl().
5530 What's really needed is a good file locking module.
5534 fcntl_emulate_flock(int fd, int operation)
5538 switch (operation & ~LOCK_NB) {
5540 flock.l_type = F_RDLCK;
5543 flock.l_type = F_WRLCK;
5546 flock.l_type = F_UNLCK;
5552 flock.l_whence = SEEK_SET;
5553 flock.l_start = flock.l_len = (Off_t)0;
5555 return fcntl(fd, (operation & LOCK_NB) ? F_SETLK : F_SETLKW, &flock);
5558 #endif /* FCNTL_EMULATE_FLOCK */
5560 #ifdef LOCKF_EMULATE_FLOCK
5562 /* XXX Emulate flock() with lockf(). This is just to increase
5563 portability of scripts. The calls are not completely
5564 interchangeable. What's really needed is a good file
5568 /* The lockf() constants might have been defined in <unistd.h>.
5569 Unfortunately, <unistd.h> causes troubles on some mixed
5570 (BSD/POSIX) systems, such as SunOS 4.1.3.
5572 Further, the lockf() constants aren't POSIX, so they might not be
5573 visible if we're compiling with _POSIX_SOURCE defined. Thus, we'll
5574 just stick in the SVID values and be done with it. Sigh.
5578 # define F_ULOCK 0 /* Unlock a previously locked region */
5581 # define F_LOCK 1 /* Lock a region for exclusive use */
5584 # define F_TLOCK 2 /* Test and lock a region for exclusive use */
5587 # define F_TEST 3 /* Test a region for other processes locks */
5591 lockf_emulate_flock(int fd, int operation)
5597 /* flock locks entire file so for lockf we need to do the same */
5598 pos = PerlLIO_lseek(fd, (Off_t)0, SEEK_CUR); /* get pos to restore later */
5599 if (pos > 0) /* is seekable and needs to be repositioned */
5600 if (PerlLIO_lseek(fd, (Off_t)0, SEEK_SET) < 0)
5601 pos = -1; /* seek failed, so don't seek back afterwards */
5604 switch (operation) {
5606 /* LOCK_SH - get a shared lock */
5608 /* LOCK_EX - get an exclusive lock */
5610 i = lockf (fd, F_LOCK, 0);
5613 /* LOCK_SH|LOCK_NB - get a non-blocking shared lock */
5614 case LOCK_SH|LOCK_NB:
5615 /* LOCK_EX|LOCK_NB - get a non-blocking exclusive lock */
5616 case LOCK_EX|LOCK_NB:
5617 i = lockf (fd, F_TLOCK, 0);
5619 if ((errno == EAGAIN) || (errno == EACCES))
5620 errno = EWOULDBLOCK;
5623 /* LOCK_UN - unlock (non-blocking is a no-op) */
5625 case LOCK_UN|LOCK_NB:
5626 i = lockf (fd, F_ULOCK, 0);
5629 /* Default - can't decipher operation */
5636 if (pos > 0) /* need to restore position of the handle */
5637 PerlLIO_lseek(fd, pos, SEEK_SET); /* ignore error here */
5642 #endif /* LOCKF_EMULATE_FLOCK */
5646 * c-indentation-style: bsd
5648 * indent-tabs-mode: t
5651 * ex: set ts=8 sts=4 sw=4 noet: