3 * Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
4 * 2004, 2005, 2006, 2007 by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
12 * But only a short way ahead its floor and the walls on either side were
13 * cloven by a great fissure, out of which the red glare came, now leaping
14 * up, now dying down into darkness; and all the while far below there was
15 * a rumour and a trouble as of great engines throbbing and labouring.
18 /* This file contains system pp ("push/pop") functions that
19 * execute the opcodes that make up a perl program. A typical pp function
20 * expects to find its arguments on the stack, and usually pushes its
21 * results onto the stack, hence the 'pp' terminology. Each OP structure
22 * contains a pointer to the relevant pp_foo() function.
24 * By 'system', we mean ops which interact with the OS, such as pp_open().
28 #define PERL_IN_PP_SYS_C
32 /* Shadow password support for solaris - pdo@cs.umd.edu
33 * Not just Solaris: at least HP-UX, IRIX, Linux.
34 * The API is from SysV.
36 * There are at least two more shadow interfaces,
37 * see the comments in pp_gpwent().
41 /* There is a MAXINT coming from <shadow.h> <- <hpsecurity.h> <- <values.h>
42 * and another MAXINT from "perl.h" <- <sys/param.h>. */
49 # include <sys/wait.h>
53 # include <sys/resource.h>
62 # include <sys/select.h>
66 /* XXX Configure test needed.
67 h_errno might not be a simple 'int', especially for multi-threaded
68 applications, see "extern int errno in perl.h". Creating such
69 a test requires taking into account the differences between
70 compiling multithreaded and singlethreaded ($ccflags et al).
71 HOST_NOT_FOUND is typically defined in <netdb.h>.
73 #if defined(HOST_NOT_FOUND) && !defined(h_errno) && !defined(__CYGWIN__)
82 struct passwd *getpwnam (char *);
83 struct passwd *getpwuid (Uid_t);
88 struct passwd *getpwent (void);
89 #elif defined (VMS) && defined (my_getpwent)
90 struct passwd *Perl_my_getpwent (pTHX);
99 struct group *getgrnam (char *);
100 struct group *getgrgid (Gid_t);
104 struct group *getgrent (void);
110 # if defined(_MSC_VER) || defined(__MINGW32__)
111 # include <sys/utime.h>
118 # ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
121 # define my_chsize PerlLIO_chsize
124 # define my_chsize PerlLIO_chsize
126 I32 my_chsize(int fd, Off_t length);
132 #else /* no flock() */
134 /* fcntl.h might not have been included, even if it exists, because
135 the current Configure only sets I_FCNTL if it's needed to pick up
136 the *_OK constants. Make sure it has been included before testing
137 the fcntl() locking constants. */
138 # if defined(HAS_FCNTL) && !defined(I_FCNTL)
142 # if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
143 # define FLOCK fcntl_emulate_flock
144 # define FCNTL_EMULATE_FLOCK
145 # else /* no flock() or fcntl(F_SETLK,...) */
147 # define FLOCK lockf_emulate_flock
148 # define LOCKF_EMULATE_FLOCK
150 # endif /* no flock() or fcntl(F_SETLK,...) */
153 static int FLOCK (int, int);
156 * These are the flock() constants. Since this sytems doesn't have
157 * flock(), the values of the constants are probably not available.
171 # endif /* emulating flock() */
173 #endif /* no flock() */
176 static const char zero_but_true[ZBTLEN + 1] = "0 but true";
178 #if defined(I_SYS_ACCESS) && !defined(R_OK)
179 # include <sys/access.h>
182 #if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
183 # define FD_CLOEXEC 1 /* NeXT needs this */
189 /* Missing protos on LynxOS */
190 void sethostent(int);
191 void endhostent(void);
193 void endnetent(void);
194 void setprotoent(int);
195 void endprotoent(void);
196 void setservent(int);
197 void endservent(void);
200 #undef PERL_EFF_ACCESS /* EFFective uid/gid ACCESS */
202 /* AIX 5.2 and below use mktime for localtime, and defines the edge case
203 * for time 0x7fffffff to be valid only in UTC. AIX 5.3 provides localtime64
204 * available in the 32bit environment, which could warrant Configure
205 * checks in the future.
208 #define LOCALTIME_EDGECASE_BROKEN
211 /* F_OK unused: if stat() cannot find it... */
213 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
214 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
215 # define PERL_EFF_ACCESS(p,f) (access((p), (f) | EFF_ONLY_OK))
218 #if !defined(PERL_EFF_ACCESS) && defined(HAS_EACCESS)
219 # ifdef I_SYS_SECURITY
220 # include <sys/security.h>
224 # define PERL_EFF_ACCESS(p,f) (eaccess((p), (f), ACC_SELF))
227 # define PERL_EFF_ACCESS(p,f) (eaccess((p), (f)))
231 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESSX) && defined(ACC_SELF)
233 # define PERL_EFF_ACCESS(p,f) (accessx((p), (f), ACC_SELF))
237 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) \
238 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
239 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
242 S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
244 const Uid_t ruid = getuid();
245 const Uid_t euid = geteuid();
246 const Gid_t rgid = getgid();
247 const Gid_t egid = getegid();
251 #if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
252 Perl_croak(aTHX_ "switching effective uid is not implemented");
255 if (setreuid(euid, ruid))
258 if (setresuid(euid, ruid, (Uid_t)-1))
261 Perl_croak(aTHX_ "entering effective uid failed");
264 #if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
265 Perl_croak(aTHX_ "switching effective gid is not implemented");
268 if (setregid(egid, rgid))
271 if (setresgid(egid, rgid, (Gid_t)-1))
274 Perl_croak(aTHX_ "entering effective gid failed");
277 res = access(path, mode);
280 if (setreuid(ruid, euid))
283 if (setresuid(ruid, euid, (Uid_t)-1))
286 Perl_croak(aTHX_ "leaving effective uid failed");
289 if (setregid(rgid, egid))
292 if (setresgid(rgid, egid, (Gid_t)-1))
295 Perl_croak(aTHX_ "leaving effective gid failed");
300 # define PERL_EFF_ACCESS(p,f) (emulate_eaccess((p), (f)))
303 #if !defined(PERL_EFF_ACCESS)
304 /* With it or without it: anyway you get a warning: either that
305 it is unused, or it is declared static and never defined.
308 S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
310 PERL_UNUSED_ARG(path);
311 PERL_UNUSED_ARG(mode);
312 Perl_croak(aTHX_ "switching effective uid is not implemented");
322 const char * const tmps = POPpconstx;
323 const I32 gimme = GIMME_V;
324 const char *mode = "r";
327 if (PL_op->op_private & OPpOPEN_IN_RAW)
329 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
331 fp = PerlProc_popen(tmps, mode);
333 const char * const type = Perl_PerlIO_context_layers(aTHX_ NULL);
335 PerlIO_apply_layers(aTHX_ fp,mode,type);
337 if (gimme == G_VOID) {
339 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
342 else if (gimme == G_SCALAR) {
345 PL_rs = &PL_sv_undef;
346 sv_setpvn(TARG, "", 0); /* note that this preserves previous buffer */
347 while (sv_gets(TARG, fp, SvCUR(TARG)) != NULL)
355 SV * const sv = newSV(79);
356 if (sv_gets(sv, fp, 0) == NULL) {
360 XPUSHs(sv_2mortal(sv));
361 if (SvLEN(sv) - SvCUR(sv) > 20) {
362 SvPV_shrink_to_cur(sv);
367 STATUS_NATIVE_CHILD_SET(PerlProc_pclose(fp));
368 TAINT; /* "I believe that this is not gratuitous!" */
371 STATUS_NATIVE_CHILD_SET(-1);
372 if (gimme == G_SCALAR)
383 tryAMAGICunTARGET(iter, -1);
385 /* Note that we only ever get here if File::Glob fails to load
386 * without at the same time croaking, for some reason, or if
387 * perl was built with PERL_EXTERNAL_GLOB */
394 * The external globbing program may use things we can't control,
395 * so for security reasons we must assume the worst.
398 taint_proper(PL_no_security, "glob");
402 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
403 PL_last_in_gv = (GV*)*PL_stack_sp--;
405 SAVESPTR(PL_rs); /* This is not permanent, either. */
406 PL_rs = sv_2mortal(newSVpvs("\000"));
409 *SvPVX(PL_rs) = '\n';
413 result = do_readline();
421 PL_last_in_gv = cGVOP_gv;
422 return do_readline();
433 do_join(TARG, &PL_sv_no, MARK, SP);
437 else if (SP == MARK) {
445 tmps = SvPV_const(tmpsv, len);
446 if ((!tmps || !len) && PL_errgv) {
447 SV * const error = ERRSV;
448 SvUPGRADE(error, SVt_PV);
449 if (SvPOK(error) && SvCUR(error))
450 sv_catpvs(error, "\t...caught");
452 tmps = SvPV_const(tmpsv, len);
455 tmpsv = sv_2mortal(newSVpvs("Warning: something's wrong"));
457 Perl_warn(aTHX_ "%"SVf, SVfARG(tmpsv));
469 VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
471 if (SP - MARK != 1) {
473 do_join(TARG, &PL_sv_no, MARK, SP);
475 tmps = SvPV_const(tmpsv, len);
481 tmps = SvROK(tmpsv) ? NULL : SvPV_const(tmpsv, len);
484 SV * const error = ERRSV;
485 SvUPGRADE(error, SVt_PV);
486 if (multiarg ? SvROK(error) : SvROK(tmpsv)) {
488 SvSetSV(error,tmpsv);
489 else if (sv_isobject(error)) {
490 HV * const stash = SvSTASH(SvRV(error));
491 GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
493 SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
494 SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
501 call_sv((SV*)GvCV(gv),
502 G_SCALAR|G_EVAL|G_KEEPERR);
503 sv_setsv(error,*PL_stack_sp--);
509 if (SvPOK(error) && SvCUR(error))
510 sv_catpvs(error, "\t...propagated");
513 tmps = SvPV_const(tmpsv, len);
519 tmpsv = sv_2mortal(newSVpvs("Died"));
521 DIE(aTHX_ "%"SVf, SVfARG(tmpsv));
537 GV * const gv = (GV *)*++MARK;
540 DIE(aTHX_ PL_no_usym, "filehandle");
542 if ((io = GvIOp(gv))) {
544 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
546 if (IoDIRP(io) && ckWARN2(WARN_IO, WARN_DEPRECATED))
547 Perl_warner(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
548 "Opening dirhandle %s also as a file", GvENAME(gv));
550 mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
552 /* Method's args are same as ours ... */
553 /* ... except handle is replaced by the object */
554 *MARK-- = SvTIED_obj((SV*)io, mg);
558 call_method("OPEN", G_SCALAR);
572 tmps = SvPV_const(sv, len);
573 ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, NULL, MARK+1, (SP-MARK));
576 PUSHi( (I32)PL_forkprocess );
577 else if (PL_forkprocess == 0) /* we are a new child */
587 GV * const gv = (MAXARG == 0) ? PL_defoutgv : (GV*)POPs;
590 IO * const io = GvIO(gv);
592 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
595 XPUSHs(SvTIED_obj((SV*)io, mg));
598 call_method("CLOSE", G_SCALAR);
606 PUSHs(boolSV(do_close(gv, TRUE)));
619 GV * const wgv = (GV*)POPs;
620 GV * const rgv = (GV*)POPs;
625 if (SvTYPE(rgv) != SVt_PVGV || SvTYPE(wgv) != SVt_PVGV)
626 DIE(aTHX_ PL_no_usym, "filehandle");
631 do_close(rgv, FALSE);
633 do_close(wgv, FALSE);
635 if (PerlProc_pipe(fd) < 0)
638 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
639 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
640 IoOFP(rstio) = IoIFP(rstio);
641 IoIFP(wstio) = IoOFP(wstio);
642 IoTYPE(rstio) = IoTYPE_RDONLY;
643 IoTYPE(wstio) = IoTYPE_WRONLY;
645 if (!IoIFP(rstio) || !IoOFP(wstio)) {
647 PerlIO_close(IoIFP(rstio));
649 PerlLIO_close(fd[0]);
651 PerlIO_close(IoOFP(wstio));
653 PerlLIO_close(fd[1]);
656 #if defined(HAS_FCNTL) && defined(F_SETFD)
657 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
658 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
665 DIE(aTHX_ PL_no_func, "pipe");
681 if (gv && (io = GvIO(gv))
682 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
685 XPUSHs(SvTIED_obj((SV*)io, mg));
688 call_method("FILENO", G_SCALAR);
694 if (!gv || !(io = GvIO(gv)) || !(fp = IoIFP(io))) {
695 /* Can't do this because people seem to do things like
696 defined(fileno($foo)) to check whether $foo is a valid fh.
697 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
698 report_evil_fh(gv, io, PL_op->op_type);
703 PUSHi(PerlIO_fileno(fp));
716 anum = PerlLIO_umask(022);
717 /* setting it to 022 between the two calls to umask avoids
718 * to have a window where the umask is set to 0 -- meaning
719 * that another thread could create world-writeable files. */
721 (void)PerlLIO_umask(anum);
724 anum = PerlLIO_umask(POPi);
725 TAINT_PROPER("umask");
728 /* Only DIE if trying to restrict permissions on "user" (self).
729 * Otherwise it's harmless and more useful to just return undef
730 * since 'group' and 'other' concepts probably don't exist here. */
731 if (MAXARG >= 1 && (POPi & 0700))
732 DIE(aTHX_ "umask not implemented");
733 XPUSHs(&PL_sv_undef);
754 if (gv && (io = GvIO(gv))) {
755 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
758 XPUSHs(SvTIED_obj((SV*)io, mg));
763 call_method("BINMODE", G_SCALAR);
771 if (!(io = GvIO(gv)) || !(fp = IoIFP(io))) {
772 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
773 report_evil_fh(gv, io, PL_op->op_type);
774 SETERRNO(EBADF,RMS_IFI);
780 const int mode = mode_from_discipline(discp);
781 const char *const d = (discp ? SvPV_nolen_const(discp) : NULL);
782 if (PerlIO_binmode(aTHX_ fp, IoTYPE(io), mode, d)) {
783 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
784 if (!PerlIO_binmode(aTHX_ IoOFP(io), IoTYPE(io), mode, d)) {
805 const I32 markoff = MARK - PL_stack_base;
806 const char *methname;
807 int how = PERL_MAGIC_tied;
811 switch(SvTYPE(varsv)) {
813 methname = "TIEHASH";
814 HvEITER_set((HV *)varsv, 0);
817 methname = "TIEARRAY";
820 #ifdef GV_UNIQUE_CHECK
821 if (GvUNIQUE((GV*)varsv)) {
822 Perl_croak(aTHX_ "Attempt to tie unique GV");
825 methname = "TIEHANDLE";
826 how = PERL_MAGIC_tiedscalar;
827 /* For tied filehandles, we apply tiedscalar magic to the IO
828 slot of the GP rather than the GV itself. AMS 20010812 */
830 GvIOp(varsv) = newIO();
831 varsv = (SV *)GvIOp(varsv);
834 methname = "TIESCALAR";
835 how = PERL_MAGIC_tiedscalar;
839 if (sv_isobject(*MARK)) {
841 PUSHSTACKi(PERLSI_MAGIC);
843 EXTEND(SP,(I32)items);
847 call_method(methname, G_SCALAR);
850 /* Not clear why we don't call call_method here too.
851 * perhaps to get different error message ?
853 stash = gv_stashsv(*MARK, 0);
854 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
855 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
856 methname, SVfARG(*MARK));
859 PUSHSTACKi(PERLSI_MAGIC);
861 EXTEND(SP,(I32)items);
865 call_sv((SV*)GvCV(gv), G_SCALAR);
871 if (sv_isobject(sv)) {
872 sv_unmagic(varsv, how);
873 /* Croak if a self-tie on an aggregate is attempted. */
874 if (varsv == SvRV(sv) &&
875 (SvTYPE(varsv) == SVt_PVAV ||
876 SvTYPE(varsv) == SVt_PVHV))
878 "Self-ties of arrays and hashes are not supported");
879 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
882 SP = PL_stack_base + markoff;
892 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
893 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
895 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
898 if ((mg = SvTIED_mg(sv, how))) {
899 SV * const obj = SvRV(SvTIED_obj(sv, mg));
901 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
903 if (gv && isGV(gv) && (cv = GvCV(gv))) {
905 XPUSHs(SvTIED_obj((SV*)gv, mg));
906 XPUSHs(sv_2mortal(newSViv(SvREFCNT(obj)-1)));
909 call_sv((SV *)cv, G_VOID);
913 else if (mg && SvREFCNT(obj) > 1 && ckWARN(WARN_UNTIE)) {
914 Perl_warner(aTHX_ packWARN(WARN_UNTIE),
915 "untie attempted while %"UVuf" inner references still exist",
916 (UV)SvREFCNT(obj) - 1 ) ;
920 sv_unmagic(sv, how) ;
930 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
931 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
933 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
936 if ((mg = SvTIED_mg(sv, how))) {
937 SV *osv = SvTIED_obj(sv, mg);
938 if (osv == mg->mg_obj)
939 osv = sv_mortalcopy(osv);
953 HV * const hv = (HV*)POPs;
954 SV * const sv = sv_2mortal(newSVpvs("AnyDBM_File"));
955 stash = gv_stashsv(sv, 0);
956 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
958 require_pv("AnyDBM_File.pm");
960 if (!(gv = gv_fetchmethod(stash, "TIEHASH")))
961 DIE(aTHX_ "No dbm on this machine");
971 PUSHs(sv_2mortal(newSVuv(O_RDWR|O_CREAT)));
973 PUSHs(sv_2mortal(newSVuv(O_RDWR)));
976 call_sv((SV*)GvCV(gv), G_SCALAR);
979 if (!sv_isobject(TOPs)) {
984 PUSHs(sv_2mortal(newSVuv(O_RDONLY)));
987 call_sv((SV*)GvCV(gv), G_SCALAR);
991 if (sv_isobject(TOPs)) {
992 sv_unmagic((SV *) hv, PERL_MAGIC_tied);
993 sv_magic((SV*)hv, TOPs, PERL_MAGIC_tied, NULL, 0);
1010 struct timeval timebuf;
1011 struct timeval *tbuf = &timebuf;
1014 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1019 # if BYTEORDER & 0xf0000
1020 # define ORDERBYTE (0x88888888 - BYTEORDER)
1022 # define ORDERBYTE (0x4444 - BYTEORDER)
1028 for (i = 1; i <= 3; i++) {
1029 SV * const sv = SP[i];
1032 if (SvREADONLY(sv)) {
1034 sv_force_normal_flags(sv, 0);
1035 if (SvREADONLY(sv) && !(SvPOK(sv) && SvCUR(sv) == 0))
1036 DIE(aTHX_ PL_no_modify);
1039 if (ckWARN(WARN_MISC))
1040 Perl_warner(aTHX_ packWARN(WARN_MISC), "Non-string passed as bitmask");
1041 SvPV_force_nolen(sv); /* force string conversion */
1048 /* little endians can use vecs directly */
1049 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1056 masksize = NFDBITS / NBBY;
1058 masksize = sizeof(long); /* documented int, everyone seems to use long */
1060 Zero(&fd_sets[0], 4, char*);
1063 # if SELECT_MIN_BITS == 1
1064 growsize = sizeof(fd_set);
1066 # if defined(__GLIBC__) && defined(__FD_SETSIZE)
1067 # undef SELECT_MIN_BITS
1068 # define SELECT_MIN_BITS __FD_SETSIZE
1070 /* If SELECT_MIN_BITS is greater than one we most probably will want
1071 * to align the sizes with SELECT_MIN_BITS/8 because for example
1072 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
1073 * UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
1074 * on (sets/tests/clears bits) is 32 bits. */
1075 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
1083 timebuf.tv_sec = (long)value;
1084 value -= (NV)timebuf.tv_sec;
1085 timebuf.tv_usec = (long)(value * 1000000.0);
1090 for (i = 1; i <= 3; i++) {
1092 if (!SvOK(sv) || SvCUR(sv) == 0) {
1099 Sv_Grow(sv, growsize);
1103 while (++j <= growsize) {
1107 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1109 Newx(fd_sets[i], growsize, char);
1110 for (offset = 0; offset < growsize; offset += masksize) {
1111 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1112 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1115 fd_sets[i] = SvPVX(sv);
1119 #ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1120 /* Can't make just the (void*) conditional because that would be
1121 * cpp #if within cpp macro, and not all compilers like that. */
1122 nfound = PerlSock_select(
1124 (Select_fd_set_t) fd_sets[1],
1125 (Select_fd_set_t) fd_sets[2],
1126 (Select_fd_set_t) fd_sets[3],
1127 (void*) tbuf); /* Workaround for compiler bug. */
1129 nfound = PerlSock_select(
1131 (Select_fd_set_t) fd_sets[1],
1132 (Select_fd_set_t) fd_sets[2],
1133 (Select_fd_set_t) fd_sets[3],
1136 for (i = 1; i <= 3; i++) {
1139 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1141 for (offset = 0; offset < growsize; offset += masksize) {
1142 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1143 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1145 Safefree(fd_sets[i]);
1152 if (GIMME == G_ARRAY && tbuf) {
1153 value = (NV)(timebuf.tv_sec) +
1154 (NV)(timebuf.tv_usec) / 1000000.0;
1155 PUSHs(sv_2mortal(newSVnv(value)));
1159 DIE(aTHX_ "select not implemented");
1164 Perl_setdefout(pTHX_ GV *gv)
1167 SvREFCNT_inc_simple_void(gv);
1169 SvREFCNT_dec(PL_defoutgv);
1177 GV * const newdefout = (PL_op->op_private > 0) ? ((GV *) POPs) : NULL;
1178 GV * egv = GvEGV(PL_defoutgv);
1184 XPUSHs(&PL_sv_undef);
1186 GV * const * const gvp = (GV**)hv_fetch(hv, GvNAME(egv), GvNAMELEN(egv), FALSE);
1187 if (gvp && *gvp == egv) {
1188 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
1192 XPUSHs(sv_2mortal(newRV((SV*)egv)));
1197 if (!GvIO(newdefout))
1198 gv_IOadd(newdefout);
1199 setdefout(newdefout);
1209 GV * const gv = (MAXARG==0) ? PL_stdingv : (GV*)POPs;
1211 if (gv && (io = GvIO(gv))) {
1212 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
1214 const I32 gimme = GIMME_V;
1216 XPUSHs(SvTIED_obj((SV*)io, mg));
1219 call_method("GETC", gimme);
1222 if (gimme == G_SCALAR)
1223 SvSetMagicSV_nosteal(TARG, TOPs);
1227 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
1228 if ((!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
1229 && ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1230 report_evil_fh(gv, io, PL_op->op_type);
1231 SETERRNO(EBADF,RMS_IFI);
1235 sv_setpvn(TARG, " ", 1);
1236 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
1237 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1238 /* Find out how many bytes the char needs */
1239 Size_t len = UTF8SKIP(SvPVX_const(TARG));
1242 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1243 SvCUR_set(TARG,1+len);
1252 S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
1255 register PERL_CONTEXT *cx;
1256 const I32 gimme = GIMME_V;
1261 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
1263 cx->blk_sub.retop = retop;
1265 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), 1);
1267 setdefout(gv); /* locally select filehandle so $% et al work */
1299 goto not_a_format_reference;
1304 tmpsv = sv_newmortal();
1305 gv_efullname4(tmpsv, fgv, NULL, FALSE);
1306 name = SvPV_nolen_const(tmpsv);
1308 DIE(aTHX_ "Undefined format \"%s\" called", name);
1310 not_a_format_reference:
1311 DIE(aTHX_ "Not a format reference");
1314 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
1316 IoFLAGS(io) &= ~IOf_DIDTOP;
1317 return doform(cv,gv,PL_op->op_next);
1323 GV * const gv = cxstack[cxstack_ix].blk_sub.gv;
1324 register IO * const io = GvIOp(gv);
1329 register PERL_CONTEXT *cx;
1331 if (!io || !(ofp = IoOFP(io)))
1334 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
1335 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
1337 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1338 PL_formtarget != PL_toptarget)
1342 if (!IoTOP_GV(io)) {
1345 if (!IoTOP_NAME(io)) {
1347 if (!IoFMT_NAME(io))
1348 IoFMT_NAME(io) = savepv(GvNAME(gv));
1349 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%s_TOP", GvNAME(gv)));
1350 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
1351 if ((topgv && GvFORM(topgv)) ||
1352 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
1353 IoTOP_NAME(io) = savesvpv(topname);
1355 IoTOP_NAME(io) = savepvs("top");
1357 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
1358 if (!topgv || !GvFORM(topgv)) {
1359 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1362 IoTOP_GV(io) = topgv;
1364 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1365 I32 lines = IoLINES_LEFT(io);
1366 const char *s = SvPVX_const(PL_formtarget);
1367 if (lines <= 0) /* Yow, header didn't even fit!!! */
1369 while (lines-- > 0) {
1370 s = strchr(s, '\n');
1376 const STRLEN save = SvCUR(PL_formtarget);
1377 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
1378 do_print(PL_formtarget, ofp);
1379 SvCUR_set(PL_formtarget, save);
1380 sv_chop(PL_formtarget, s);
1381 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
1384 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
1385 do_print(PL_formfeed, ofp);
1386 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1388 PL_formtarget = PL_toptarget;
1389 IoFLAGS(io) |= IOf_DIDTOP;
1392 DIE(aTHX_ "bad top format reference");
1395 SV * const sv = sv_newmortal();
1397 gv_efullname4(sv, fgv, NULL, FALSE);
1398 name = SvPV_nolen_const(sv);
1400 DIE(aTHX_ "Undefined top format \"%s\" called", name);
1402 DIE(aTHX_ "Undefined top format called");
1404 if (cv && CvCLONE(cv))
1405 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
1406 return doform(cv, gv, PL_op);
1410 POPBLOCK(cx,PL_curpm);
1416 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
1418 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
1419 else if (ckWARN(WARN_CLOSED))
1420 report_evil_fh(gv, io, PL_op->op_type);
1425 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
1426 if (ckWARN(WARN_IO))
1427 Perl_warner(aTHX_ packWARN(WARN_IO), "page overflow");
1429 if (!do_print(PL_formtarget, fp))
1432 FmLINES(PL_formtarget) = 0;
1433 SvCUR_set(PL_formtarget, 0);
1434 *SvEND(PL_formtarget) = '\0';
1435 if (IoFLAGS(io) & IOf_FLUSH)
1436 (void)PerlIO_flush(fp);
1441 PL_formtarget = PL_bodytarget;
1443 PERL_UNUSED_VAR(newsp);
1444 PERL_UNUSED_VAR(gimme);
1445 return cx->blk_sub.retop;
1450 dVAR; dSP; dMARK; dORIGMARK;
1455 GV * const gv = (PL_op->op_flags & OPf_STACKED) ? (GV*)*++MARK : PL_defoutgv;
1457 if (gv && (io = GvIO(gv))) {
1458 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
1460 if (MARK == ORIGMARK) {
1463 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1467 *MARK = SvTIED_obj((SV*)io, mg);
1470 call_method("PRINTF", G_SCALAR);
1473 MARK = ORIGMARK + 1;
1481 if (!(io = GvIO(gv))) {
1482 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1483 report_evil_fh(gv, io, PL_op->op_type);
1484 SETERRNO(EBADF,RMS_IFI);
1487 else if (!(fp = IoOFP(io))) {
1488 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
1490 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
1491 else if (ckWARN(WARN_CLOSED))
1492 report_evil_fh(gv, io, PL_op->op_type);
1494 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
1498 if (SvTAINTED(MARK[1]))
1499 TAINT_PROPER("printf");
1500 do_sprintf(sv, SP - MARK, MARK + 1);
1501 if (!do_print(sv, fp))
1504 if (IoFLAGS(io) & IOf_FLUSH)
1505 if (PerlIO_flush(fp) == EOF)
1516 PUSHs(&PL_sv_undef);
1524 const int perm = (MAXARG > 3) ? POPi : 0666;
1525 const int mode = POPi;
1526 SV * const sv = POPs;
1527 GV * const gv = (GV *)POPs;
1530 /* Need TIEHANDLE method ? */
1531 const char * const tmps = SvPV_const(sv, len);
1532 /* FIXME? do_open should do const */
1533 if (do_open(gv, tmps, len, TRUE, mode, perm, NULL)) {
1534 IoLINES(GvIOp(gv)) = 0;
1538 PUSHs(&PL_sv_undef);
1545 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
1551 Sock_size_t bufsize;
1559 bool charstart = FALSE;
1560 STRLEN charskip = 0;
1563 GV * const gv = (GV*)*++MARK;
1564 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1565 && gv && (io = GvIO(gv)) )
1567 const MAGIC * mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
1571 *MARK = SvTIED_obj((SV*)io, mg);
1573 call_method("READ", G_SCALAR);
1587 sv_setpvn(bufsv, "", 0);
1588 length = SvIVx(*++MARK);
1591 offset = SvIVx(*++MARK);
1595 if (!io || !IoIFP(io)) {
1596 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1597 report_evil_fh(gv, io, PL_op->op_type);
1598 SETERRNO(EBADF,RMS_IFI);
1601 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
1602 buffer = SvPVutf8_force(bufsv, blen);
1603 /* UTF-8 may not have been set if they are all low bytes */
1608 buffer = SvPV_force(bufsv, blen);
1609 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
1612 DIE(aTHX_ "Negative length");
1620 if (PL_op->op_type == OP_RECV) {
1621 char namebuf[MAXPATHLEN];
1622 #if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
1623 bufsize = sizeof (struct sockaddr_in);
1625 bufsize = sizeof namebuf;
1627 #ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1631 buffer = SvGROW(bufsv, (STRLEN)(length+1));
1632 /* 'offset' means 'flags' here */
1633 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
1634 (struct sockaddr *)namebuf, &bufsize);
1638 /* Bogus return without padding */
1639 bufsize = sizeof (struct sockaddr_in);
1641 SvCUR_set(bufsv, count);
1642 *SvEND(bufsv) = '\0';
1643 (void)SvPOK_only(bufsv);
1647 /* This should not be marked tainted if the fp is marked clean */
1648 if (!(IoFLAGS(io) & IOf_UNTAINT))
1649 SvTAINTED_on(bufsv);
1651 sv_setpvn(TARG, namebuf, bufsize);
1656 if (PL_op->op_type == OP_RECV)
1657 DIE(aTHX_ PL_no_sock_func, "recv");
1659 if (DO_UTF8(bufsv)) {
1660 /* offset adjust in characters not bytes */
1661 blen = sv_len_utf8(bufsv);
1664 if (-offset > (int)blen)
1665 DIE(aTHX_ "Offset outside string");
1668 if (DO_UTF8(bufsv)) {
1669 /* convert offset-as-chars to offset-as-bytes */
1670 if (offset >= (int)blen)
1671 offset += SvCUR(bufsv) - blen;
1673 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
1676 bufsize = SvCUR(bufsv);
1677 /* Allocating length + offset + 1 isn't perfect in the case of reading
1678 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1680 (should be 2 * length + offset + 1, or possibly something longer if
1681 PL_encoding is true) */
1682 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
1683 if (offset > 0 && (Sock_size_t)offset > bufsize) { /* Zero any newly allocated space */
1684 Zero(buffer+bufsize, offset-bufsize, char);
1686 buffer = buffer + offset;
1688 read_target = bufsv;
1690 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1691 concatenate it to the current buffer. */
1693 /* Truncate the existing buffer to the start of where we will be
1695 SvCUR_set(bufsv, offset);
1697 read_target = sv_newmortal();
1698 SvUPGRADE(read_target, SVt_PV);
1699 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1702 if (PL_op->op_type == OP_SYSREAD) {
1703 #ifdef PERL_SOCK_SYSREAD_IS_RECV
1704 if (IoTYPE(io) == IoTYPE_SOCKET) {
1705 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1711 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1716 #ifdef HAS_SOCKET__bad_code_maybe
1717 if (IoTYPE(io) == IoTYPE_SOCKET) {
1718 char namebuf[MAXPATHLEN];
1719 #if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1720 bufsize = sizeof (struct sockaddr_in);
1722 bufsize = sizeof namebuf;
1724 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
1725 (struct sockaddr *)namebuf, &bufsize);
1730 count = PerlIO_read(IoIFP(io), buffer, length);
1731 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1732 if (count == 0 && PerlIO_error(IoIFP(io)))
1736 if ((IoTYPE(io) == IoTYPE_WRONLY) && ckWARN(WARN_IO))
1737 report_evil_fh(gv, io, OP_phoney_OUTPUT_ONLY);
1740 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1741 *SvEND(read_target) = '\0';
1742 (void)SvPOK_only(read_target);
1743 if (fp_utf8 && !IN_BYTES) {
1744 /* Look at utf8 we got back and count the characters */
1745 const char *bend = buffer + count;
1746 while (buffer < bend) {
1748 skip = UTF8SKIP(buffer);
1751 if (buffer - charskip + skip > bend) {
1752 /* partial character - try for rest of it */
1753 length = skip - (bend-buffer);
1754 offset = bend - SvPVX_const(bufsv);
1766 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1767 provided amount read (count) was what was requested (length)
1769 if (got < wanted && count == length) {
1770 length = wanted - got;
1771 offset = bend - SvPVX_const(bufsv);
1774 /* return value is character count */
1778 else if (buffer_utf8) {
1779 /* Let svcatsv upgrade the bytes we read in to utf8.
1780 The buffer is a mortal so will be freed soon. */
1781 sv_catsv_nomg(bufsv, read_target);
1784 /* This should not be marked tainted if the fp is marked clean */
1785 if (!(IoFLAGS(io) & IOf_UNTAINT))
1786 SvTAINTED_on(bufsv);
1798 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
1804 STRLEN orig_blen_bytes;
1805 const int op_type = PL_op->op_type;
1809 GV *const gv = (GV*)*++MARK;
1810 if (PL_op->op_type == OP_SYSWRITE
1811 && gv && (io = GvIO(gv))) {
1812 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
1816 if (MARK == SP - 1) {
1818 sv = sv_2mortal(newSViv(sv_len(*SP)));
1824 *(ORIGMARK+1) = SvTIED_obj((SV*)io, mg);
1826 call_method("WRITE", G_SCALAR);
1842 if (!io || !IoIFP(io) || IoTYPE(io) == IoTYPE_RDONLY) {
1844 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
1845 if (io && IoIFP(io))
1846 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
1848 report_evil_fh(gv, io, PL_op->op_type);
1850 SETERRNO(EBADF,RMS_IFI);
1854 /* Do this first to trigger any overloading. */
1855 buffer = SvPV_const(bufsv, blen);
1856 orig_blen_bytes = blen;
1857 doing_utf8 = DO_UTF8(bufsv);
1859 if (PerlIO_isutf8(IoIFP(io))) {
1860 if (!SvUTF8(bufsv)) {
1861 /* We don't modify the original scalar. */
1862 tmpbuf = bytes_to_utf8((const U8*) buffer, &blen);
1863 buffer = (char *) tmpbuf;
1867 else if (doing_utf8) {
1868 STRLEN tmplen = blen;
1869 U8 * const result = bytes_from_utf8((const U8*) buffer, &tmplen, &doing_utf8);
1872 buffer = (char *) tmpbuf;
1876 assert((char *)result == buffer);
1877 Perl_croak(aTHX_ "Wide character in %s", OP_DESC(PL_op));
1881 if (op_type == OP_SYSWRITE) {
1882 Size_t length = 0; /* This length is in characters. */
1888 /* The SV is bytes, and we've had to upgrade it. */
1889 blen_chars = orig_blen_bytes;
1891 /* The SV really is UTF-8. */
1892 if (SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
1893 /* Don't call sv_len_utf8 again because it will call magic
1894 or overloading a second time, and we might get back a
1895 different result. */
1896 blen_chars = utf8_length((U8*)buffer, (U8*)buffer + blen);
1898 /* It's safe, and it may well be cached. */
1899 blen_chars = sv_len_utf8(bufsv);
1907 length = blen_chars;
1909 #if Size_t_size > IVSIZE
1910 length = (Size_t)SvNVx(*++MARK);
1912 length = (Size_t)SvIVx(*++MARK);
1914 if ((SSize_t)length < 0) {
1916 DIE(aTHX_ "Negative length");
1921 offset = SvIVx(*++MARK);
1923 if (-offset > (IV)blen_chars) {
1925 DIE(aTHX_ "Offset outside string");
1927 offset += blen_chars;
1928 } else if (offset >= (IV)blen_chars && blen_chars > 0) {
1930 DIE(aTHX_ "Offset outside string");
1934 if (length > blen_chars - offset)
1935 length = blen_chars - offset;
1937 /* Here we convert length from characters to bytes. */
1938 if (tmpbuf || SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
1939 /* Either we had to convert the SV, or the SV is magical, or
1940 the SV has overloading, in which case we can't or mustn't
1941 or mustn't call it again. */
1943 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
1944 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1946 /* It's a real UTF-8 SV, and it's not going to change under
1947 us. Take advantage of any cache. */
1949 I32 len_I32 = length;
1951 /* Convert the start and end character positions to bytes.
1952 Remember that the second argument to sv_pos_u2b is relative
1954 sv_pos_u2b(bufsv, &start, &len_I32);
1961 buffer = buffer+offset;
1963 #ifdef PERL_SOCK_SYSWRITE_IS_SEND
1964 if (IoTYPE(io) == IoTYPE_SOCKET) {
1965 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
1971 /* See the note at doio.c:do_print about filesize limits. --jhi */
1972 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
1978 const int flags = SvIVx(*++MARK);
1981 char * const sockbuf = SvPVx(*++MARK, mlen);
1982 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1983 flags, (struct sockaddr *)sockbuf, mlen);
1987 = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, flags);
1992 DIE(aTHX_ PL_no_sock_func, "send");
1999 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
2002 #if Size_t_size > IVSIZE
2021 if (PL_op->op_flags & OPf_SPECIAL) { /* eof() */
2023 gv = PL_last_in_gv = GvEGV(PL_argvgv);
2025 if (io && !IoIFP(io)) {
2026 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
2028 IoFLAGS(io) &= ~IOf_START;
2029 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, NULL);
2030 sv_setpvn(GvSV(gv), "-", 1);
2031 SvSETMAGIC(GvSV(gv));
2033 else if (!nextargv(gv))
2038 gv = PL_last_in_gv; /* eof */
2041 gv = PL_last_in_gv = (GV*)POPs; /* eof(FH) */
2044 IO * const io = GvIO(gv);
2046 if (io && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) {
2048 XPUSHs(SvTIED_obj((SV*)io, mg));
2051 call_method("EOF", G_SCALAR);
2058 PUSHs(boolSV(!gv || do_eof(gv)));
2069 PL_last_in_gv = (GV*)POPs;
2072 if (gv && (io = GvIO(gv))) {
2073 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
2076 XPUSHs(SvTIED_obj((SV*)io, mg));
2079 call_method("TELL", G_SCALAR);
2086 #if LSEEKSIZE > IVSIZE
2087 PUSHn( do_tell(gv) );
2089 PUSHi( do_tell(gv) );
2097 const int whence = POPi;
2098 #if LSEEKSIZE > IVSIZE
2099 const Off_t offset = (Off_t)SvNVx(POPs);
2101 const Off_t offset = (Off_t)SvIVx(POPs);
2104 GV * const gv = PL_last_in_gv = (GV*)POPs;
2107 if (gv && (io = GvIO(gv))) {
2108 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
2111 XPUSHs(SvTIED_obj((SV*)io, mg));
2112 #if LSEEKSIZE > IVSIZE
2113 XPUSHs(sv_2mortal(newSVnv((NV) offset)));
2115 XPUSHs(sv_2mortal(newSViv(offset)));
2117 XPUSHs(sv_2mortal(newSViv(whence)));
2120 call_method("SEEK", G_SCALAR);
2127 if (PL_op->op_type == OP_SEEK)
2128 PUSHs(boolSV(do_seek(gv, offset, whence)));
2130 const Off_t sought = do_sysseek(gv, offset, whence);
2132 PUSHs(&PL_sv_undef);
2134 SV* const sv = sought ?
2135 #if LSEEKSIZE > IVSIZE
2140 : newSVpvn(zero_but_true, ZBTLEN);
2141 PUSHs(sv_2mortal(sv));
2151 /* There seems to be no consensus on the length type of truncate()
2152 * and ftruncate(), both off_t and size_t have supporters. In
2153 * general one would think that when using large files, off_t is
2154 * at least as wide as size_t, so using an off_t should be okay. */
2155 /* XXX Configure probe for the length type of *truncate() needed XXX */
2158 #if Off_t_size > IVSIZE
2163 /* Checking for length < 0 is problematic as the type might or
2164 * might not be signed: if it is not, clever compilers will moan. */
2165 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
2172 if (PL_op->op_flags & OPf_SPECIAL) {
2173 tmpgv = gv_fetchsv(POPs, 0, SVt_PVIO);
2182 TAINT_PROPER("truncate");
2183 if (!(fp = IoIFP(io))) {
2189 if (ftruncate(PerlIO_fileno(fp), len) < 0)
2191 if (my_chsize(PerlIO_fileno(fp), len) < 0)
2198 SV * const sv = POPs;
2201 if (SvTYPE(sv) == SVt_PVGV) {
2202 tmpgv = (GV*)sv; /* *main::FRED for example */
2203 goto do_ftruncate_gv;
2205 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2206 tmpgv = (GV*) SvRV(sv); /* \*main::FRED for example */
2207 goto do_ftruncate_gv;
2209 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2210 io = (IO*) SvRV(sv); /* *main::FRED{IO} for example */
2211 goto do_ftruncate_io;
2214 name = SvPV_nolen_const(sv);
2215 TAINT_PROPER("truncate");
2217 if (truncate(name, len) < 0)
2221 const int tmpfd = PerlLIO_open(name, O_RDWR);
2226 if (my_chsize(tmpfd, len) < 0)
2228 PerlLIO_close(tmpfd);
2237 SETERRNO(EBADF,RMS_IFI);
2245 SV * const argsv = POPs;
2246 const unsigned int func = POPu;
2247 const int optype = PL_op->op_type;
2248 GV * const gv = (GV*)POPs;
2249 IO * const io = gv ? GvIOn(gv) : NULL;
2253 if (!io || !argsv || !IoIFP(io)) {
2254 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2255 report_evil_fh(gv, io, PL_op->op_type);
2256 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
2260 if (SvPOK(argsv) || !SvNIOK(argsv)) {
2263 s = SvPV_force(argsv, len);
2264 need = IOCPARM_LEN(func);
2266 s = Sv_Grow(argsv, need + 1);
2267 SvCUR_set(argsv, need);
2270 s[SvCUR(argsv)] = 17; /* a little sanity check here */
2273 retval = SvIV(argsv);
2274 s = INT2PTR(char*,retval); /* ouch */
2277 TAINT_PROPER(PL_op_desc[optype]);
2279 if (optype == OP_IOCTL)
2281 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
2283 DIE(aTHX_ "ioctl is not implemented");
2287 DIE(aTHX_ "fcntl is not implemented");
2289 #if defined(OS2) && defined(__EMX__)
2290 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
2292 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
2296 #if defined(HAS_IOCTL) || defined(HAS_FCNTL)
2298 if (s[SvCUR(argsv)] != 17)
2299 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
2301 s[SvCUR(argsv)] = 0; /* put our null back */
2302 SvSETMAGIC(argsv); /* Assume it has changed */
2311 PUSHp(zero_but_true, ZBTLEN);
2324 const int argtype = POPi;
2325 GV * const gv = (MAXARG == 0) ? PL_last_in_gv : (GV*)POPs;
2327 if (gv && (io = GvIO(gv)))
2333 /* XXX Looks to me like io is always NULL at this point */
2335 (void)PerlIO_flush(fp);
2336 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
2339 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2340 report_evil_fh(gv, io, PL_op->op_type);
2342 SETERRNO(EBADF,RMS_IFI);
2347 DIE(aTHX_ PL_no_func, "flock()");
2357 const int protocol = POPi;
2358 const int type = POPi;
2359 const int domain = POPi;
2360 GV * const gv = (GV*)POPs;
2361 register IO * const io = gv ? GvIOn(gv) : NULL;
2365 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2366 report_evil_fh(gv, io, PL_op->op_type);
2367 if (io && IoIFP(io))
2368 do_close(gv, FALSE);
2369 SETERRNO(EBADF,LIB_INVARG);
2374 do_close(gv, FALSE);
2376 TAINT_PROPER("socket");
2377 fd = PerlSock_socket(domain, type, protocol);
2380 IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2381 IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
2382 IoTYPE(io) = IoTYPE_SOCKET;
2383 if (!IoIFP(io) || !IoOFP(io)) {
2384 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2385 if (IoOFP(io)) PerlIO_close(IoOFP(io));
2386 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
2389 #if defined(HAS_FCNTL) && defined(F_SETFD)
2390 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2394 setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
2399 DIE(aTHX_ PL_no_sock_func, "socket");
2405 #if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
2407 const int protocol = POPi;
2408 const int type = POPi;
2409 const int domain = POPi;
2410 GV * const gv2 = (GV*)POPs;
2411 GV * const gv1 = (GV*)POPs;
2412 register IO * const io1 = gv1 ? GvIOn(gv1) : NULL;
2413 register IO * const io2 = gv2 ? GvIOn(gv2) : NULL;
2416 if (!gv1 || !gv2 || !io1 || !io2) {
2417 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
2419 report_evil_fh(gv1, io1, PL_op->op_type);
2421 report_evil_fh(gv1, io2, PL_op->op_type);
2423 if (io1 && IoIFP(io1))
2424 do_close(gv1, FALSE);
2425 if (io2 && IoIFP(io2))
2426 do_close(gv2, FALSE);
2431 do_close(gv1, FALSE);
2433 do_close(gv2, FALSE);
2435 TAINT_PROPER("socketpair");
2436 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
2438 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2439 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
2440 IoTYPE(io1) = IoTYPE_SOCKET;
2441 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2442 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
2443 IoTYPE(io2) = IoTYPE_SOCKET;
2444 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
2445 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2446 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
2447 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
2448 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2449 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
2450 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
2453 #if defined(HAS_FCNTL) && defined(F_SETFD)
2454 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2455 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2460 DIE(aTHX_ PL_no_sock_func, "socketpair");
2468 SV * const addrsv = POPs;
2469 /* OK, so on what platform does bind modify addr? */
2471 GV * const gv = (GV*)POPs;
2472 register IO * const io = GvIOn(gv);
2475 if (!io || !IoIFP(io))
2478 addr = SvPV_const(addrsv, len);
2479 TAINT_PROPER("bind");
2480 if (PerlSock_bind(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
2486 if (ckWARN(WARN_CLOSED))
2487 report_evil_fh(gv, io, PL_op->op_type);
2488 SETERRNO(EBADF,SS_IVCHAN);
2491 DIE(aTHX_ PL_no_sock_func, "bind");
2499 SV * const addrsv = POPs;
2500 GV * const gv = (GV*)POPs;
2501 register IO * const io = GvIOn(gv);
2505 if (!io || !IoIFP(io))
2508 addr = SvPV_const(addrsv, len);
2509 TAINT_PROPER("connect");
2510 if (PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
2516 if (ckWARN(WARN_CLOSED))
2517 report_evil_fh(gv, io, PL_op->op_type);
2518 SETERRNO(EBADF,SS_IVCHAN);
2521 DIE(aTHX_ PL_no_sock_func, "connect");
2529 const int backlog = POPi;
2530 GV * const gv = (GV*)POPs;
2531 register IO * const io = gv ? GvIOn(gv) : NULL;
2533 if (!gv || !io || !IoIFP(io))
2536 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
2542 if (ckWARN(WARN_CLOSED))
2543 report_evil_fh(gv, io, PL_op->op_type);
2544 SETERRNO(EBADF,SS_IVCHAN);
2547 DIE(aTHX_ PL_no_sock_func, "listen");
2557 char namebuf[MAXPATHLEN];
2558 #if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
2559 Sock_size_t len = sizeof (struct sockaddr_in);
2561 Sock_size_t len = sizeof namebuf;
2563 GV * const ggv = (GV*)POPs;
2564 GV * const ngv = (GV*)POPs;
2573 if (!gstio || !IoIFP(gstio))
2577 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
2580 /* Some platforms indicate zero length when an AF_UNIX client is
2581 * not bound. Simulate a non-zero-length sockaddr structure in
2583 namebuf[0] = 0; /* sun_len */
2584 namebuf[1] = AF_UNIX; /* sun_family */
2592 do_close(ngv, FALSE);
2593 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2594 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
2595 IoTYPE(nstio) = IoTYPE_SOCKET;
2596 if (!IoIFP(nstio) || !IoOFP(nstio)) {
2597 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2598 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
2599 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
2602 #if defined(HAS_FCNTL) && defined(F_SETFD)
2603 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2607 len = sizeof (struct sockaddr_in); /* EPOC somehow truncates info */
2608 setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
2610 #ifdef __SCO_VERSION__
2611 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
2614 PUSHp(namebuf, len);
2618 if (ckWARN(WARN_CLOSED))
2619 report_evil_fh(ggv, ggv ? GvIO(ggv) : 0, PL_op->op_type);
2620 SETERRNO(EBADF,SS_IVCHAN);
2626 DIE(aTHX_ PL_no_sock_func, "accept");
2634 const int how = POPi;
2635 GV * const gv = (GV*)POPs;
2636 register IO * const io = GvIOn(gv);
2638 if (!io || !IoIFP(io))
2641 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
2645 if (ckWARN(WARN_CLOSED))
2646 report_evil_fh(gv, io, PL_op->op_type);
2647 SETERRNO(EBADF,SS_IVCHAN);
2650 DIE(aTHX_ PL_no_sock_func, "shutdown");
2658 const int optype = PL_op->op_type;
2659 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
2660 const unsigned int optname = (unsigned int) POPi;
2661 const unsigned int lvl = (unsigned int) POPi;
2662 GV * const gv = (GV*)POPs;
2663 register IO * const io = GvIOn(gv);
2667 if (!io || !IoIFP(io))
2670 fd = PerlIO_fileno(IoIFP(io));
2674 (void)SvPOK_only(sv);
2678 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
2685 #if defined(__SYMBIAN32__)
2686 # define SETSOCKOPT_OPTION_VALUE_T void *
2688 # define SETSOCKOPT_OPTION_VALUE_T const char *
2690 /* XXX TODO: We need to have a proper type (a Configure probe,
2691 * etc.) for what the C headers think of the third argument of
2692 * setsockopt(), the option_value read-only buffer: is it
2693 * a "char *", or a "void *", const or not. Some compilers
2694 * don't take kindly to e.g. assuming that "char *" implicitly
2695 * promotes to a "void *", or to explicitly promoting/demoting
2696 * consts to non/vice versa. The "const void *" is the SUS
2697 * definition, but that does not fly everywhere for the above
2699 SETSOCKOPT_OPTION_VALUE_T buf;
2703 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2707 aint = (int)SvIV(sv);
2708 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
2711 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
2720 if (ckWARN(WARN_CLOSED))
2721 report_evil_fh(gv, io, optype);
2722 SETERRNO(EBADF,SS_IVCHAN);
2727 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
2735 const int optype = PL_op->op_type;
2736 GV * const gv = (GV*)POPs;
2737 register IO * const io = GvIOn(gv);
2742 if (!io || !IoIFP(io))
2745 sv = sv_2mortal(newSV(257));
2746 (void)SvPOK_only(sv);
2750 fd = PerlIO_fileno(IoIFP(io));
2752 case OP_GETSOCKNAME:
2753 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2756 case OP_GETPEERNAME:
2757 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2759 #if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2761 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";
2762 /* If the call succeeded, make sure we don't have a zeroed port/addr */
2763 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2764 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
2765 sizeof(u_short) + sizeof(struct in_addr))) {
2772 #ifdef BOGUS_GETNAME_RETURN
2773 /* Interactive Unix, getpeername() and getsockname()
2774 does not return valid namelen */
2775 if (len == BOGUS_GETNAME_RETURN)
2776 len = sizeof(struct sockaddr);
2784 if (ckWARN(WARN_CLOSED))
2785 report_evil_fh(gv, io, optype);
2786 SETERRNO(EBADF,SS_IVCHAN);
2791 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
2806 if (PL_op->op_flags & OPf_REF) {
2808 if (PL_op->op_type == OP_LSTAT) {
2809 if (gv != PL_defgv) {
2810 do_fstat_warning_check:
2811 if (ckWARN(WARN_IO))
2812 Perl_warner(aTHX_ packWARN(WARN_IO),
2813 "lstat() on filehandle %s", gv ? GvENAME(gv) : "");
2814 } else if (PL_laststype != OP_LSTAT)
2815 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
2819 if (gv != PL_defgv) {
2820 PL_laststype = OP_STAT;
2822 sv_setpvn(PL_statname, "", 0);
2829 PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
2830 } else if (IoDIRP(io)) {
2832 PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache);
2834 PL_laststatval = -1;
2840 if (PL_laststatval < 0) {
2841 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2842 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
2847 SV* const sv = POPs;
2848 if (SvTYPE(sv) == SVt_PVGV) {
2851 } else if(SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2853 if (PL_op->op_type == OP_LSTAT)
2854 goto do_fstat_warning_check;
2856 } else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2858 if (PL_op->op_type == OP_LSTAT)
2859 goto do_fstat_warning_check;
2860 goto do_fstat_have_io;
2863 sv_setpv(PL_statname, SvPV_nolen_const(sv));
2865 PL_laststype = PL_op->op_type;
2866 if (PL_op->op_type == OP_LSTAT)
2867 PL_laststatval = PerlLIO_lstat(SvPV_nolen_const(PL_statname), &PL_statcache);
2869 PL_laststatval = PerlLIO_stat(SvPV_nolen_const(PL_statname), &PL_statcache);
2870 if (PL_laststatval < 0) {
2871 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname), '\n'))
2872 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
2878 if (gimme != G_ARRAY) {
2879 if (gimme != G_VOID)
2880 XPUSHs(boolSV(max));
2886 PUSHs(sv_2mortal(newSViv(PL_statcache.st_dev)));
2887 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ino)));
2888 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_mode)));
2889 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_nlink)));
2890 #if Uid_t_size > IVSIZE
2891 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_uid)));
2893 # if Uid_t_sign <= 0
2894 PUSHs(sv_2mortal(newSViv(PL_statcache.st_uid)));
2896 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_uid)));
2899 #if Gid_t_size > IVSIZE
2900 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_gid)));
2902 # if Gid_t_sign <= 0
2903 PUSHs(sv_2mortal(newSViv(PL_statcache.st_gid)));
2905 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_gid)));
2908 #ifdef USE_STAT_RDEV
2909 PUSHs(sv_2mortal(newSViv(PL_statcache.st_rdev)));
2911 PUSHs(sv_2mortal(newSVpvs("")));
2913 #if Off_t_size > IVSIZE
2914 PUSHs(sv_2mortal(newSVnv((NV)PL_statcache.st_size)));
2916 PUSHs(sv_2mortal(newSViv(PL_statcache.st_size)));
2919 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_atime)));
2920 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_mtime)));
2921 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_ctime)));
2923 PUSHs(sv_2mortal(newSViv((IV)PL_statcache.st_atime)));
2924 PUSHs(sv_2mortal(newSViv((IV)PL_statcache.st_mtime)));
2925 PUSHs(sv_2mortal(newSViv((IV)PL_statcache.st_ctime)));
2927 #ifdef USE_STAT_BLOCKS
2928 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blksize)));
2929 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blocks)));
2931 PUSHs(sv_2mortal(newSVpvs("")));
2932 PUSHs(sv_2mortal(newSVpvs("")));
2938 /* This macro is used by the stacked filetest operators :
2939 * if the previous filetest failed, short-circuit and pass its value.
2940 * Else, discard it from the stack and continue. --rgs
2942 #define STACKED_FTEST_CHECK if (PL_op->op_private & OPpFT_STACKED) { \
2943 if (TOPs == &PL_sv_no || TOPs == &PL_sv_undef) { RETURN; } \
2944 else { (void)POPs; PUTBACK; } \
2951 /* Not const, because things tweak this below. Not bool, because there's
2952 no guarantee that OPp_FT_ACCESS is <= CHAR_MAX */
2953 #if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2954 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
2955 /* Giving some sort of initial value silences compilers. */
2957 int access_mode = R_OK;
2959 int access_mode = 0;
2962 /* access_mode is never used, but leaving use_access in makes the
2963 conditional compiling below much clearer. */
2966 int stat_mode = S_IRUSR;
2968 bool effective = FALSE;
2971 STACKED_FTEST_CHECK;
2973 switch (PL_op->op_type) {
2975 #if !(defined(HAS_ACCESS) && defined(R_OK))
2981 #if defined(HAS_ACCESS) && defined(W_OK)
2986 stat_mode = S_IWUSR;
2990 #if defined(HAS_ACCESS) && defined(X_OK)
2995 stat_mode = S_IXUSR;
2999 #ifdef PERL_EFF_ACCESS
3002 stat_mode = S_IWUSR;
3006 #ifndef PERL_EFF_ACCESS
3014 #ifdef PERL_EFF_ACCESS
3019 stat_mode = S_IXUSR;
3025 #if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
3026 const char *name = POPpx;
3028 # ifdef PERL_EFF_ACCESS
3029 result = PERL_EFF_ACCESS(name, access_mode);
3031 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
3037 result = access(name, access_mode);
3039 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
3054 if (cando(stat_mode, effective, &PL_statcache))
3063 const int op_type = PL_op->op_type;
3065 STACKED_FTEST_CHECK;
3070 if (op_type == OP_FTIS)
3073 /* You can't dTARGET inside OP_FTIS, because you'll get
3074 "panic: pad_sv po" - the op is not flagged to have a target. */
3078 #if Off_t_size > IVSIZE
3079 PUSHn(PL_statcache.st_size);
3081 PUSHi(PL_statcache.st_size);
3085 PUSHn( (((NV)PL_basetime - PL_statcache.st_mtime)) / 86400.0 );
3088 PUSHn( (((NV)PL_basetime - PL_statcache.st_atime)) / 86400.0 );
3091 PUSHn( (((NV)PL_basetime - PL_statcache.st_ctime)) / 86400.0 );
3104 /* I believe that all these three are likely to be defined on most every
3105 system these days. */
3107 if(PL_op->op_type == OP_FTSUID)
3111 if(PL_op->op_type == OP_FTSGID)
3115 if(PL_op->op_type == OP_FTSVTX)
3119 STACKED_FTEST_CHECK;
3124 switch (PL_op->op_type) {
3126 if (PL_statcache.st_uid == PL_uid)
3130 if (PL_statcache.st_uid == PL_euid)
3134 if (PL_statcache.st_size == 0)
3138 if (S_ISSOCK(PL_statcache.st_mode))
3142 if (S_ISCHR(PL_statcache.st_mode))
3146 if (S_ISBLK(PL_statcache.st_mode))
3150 if (S_ISREG(PL_statcache.st_mode))
3154 if (S_ISDIR(PL_statcache.st_mode))
3158 if (S_ISFIFO(PL_statcache.st_mode))
3163 if (PL_statcache.st_mode & S_ISUID)
3169 if (PL_statcache.st_mode & S_ISGID)
3175 if (PL_statcache.st_mode & S_ISVTX)
3186 I32 result = my_lstat();
3190 if (S_ISLNK(PL_statcache.st_mode))
3203 STACKED_FTEST_CHECK;
3205 if (PL_op->op_flags & OPf_REF)
3207 else if (isGV(TOPs))
3209 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3210 gv = (GV*)SvRV(POPs);
3212 gv = gv_fetchsv(tmpsv = POPs, 0, SVt_PVIO);
3214 if (GvIO(gv) && IoIFP(GvIOp(gv)))
3215 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
3216 else if (tmpsv && SvOK(tmpsv)) {
3217 const char *tmps = SvPV_nolen_const(tmpsv);
3225 if (PerlLIO_isatty(fd))
3230 #if defined(atarist) /* this will work with atariST. Configure will
3231 make guesses for other systems. */
3232 # define FILE_base(f) ((f)->_base)
3233 # define FILE_ptr(f) ((f)->_ptr)
3234 # define FILE_cnt(f) ((f)->_cnt)
3235 # define FILE_bufsiz(f) ((f)->_cnt + ((f)->_ptr - (f)->_base))
3246 register STDCHAR *s;
3252 STACKED_FTEST_CHECK;
3254 if (PL_op->op_flags & OPf_REF)
3256 else if (isGV(TOPs))
3258 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3259 gv = (GV*)SvRV(POPs);
3265 if (gv == PL_defgv) {
3267 io = GvIO(PL_statgv);
3270 goto really_filename;
3275 PL_laststatval = -1;
3276 sv_setpvn(PL_statname, "", 0);
3277 io = GvIO(PL_statgv);
3279 if (io && IoIFP(io)) {
3280 if (! PerlIO_has_base(IoIFP(io)))
3281 DIE(aTHX_ "-T and -B not implemented on filehandles");
3282 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3283 if (PL_laststatval < 0)
3285 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
3286 if (PL_op->op_type == OP_FTTEXT)
3291 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
3292 i = PerlIO_getc(IoIFP(io));
3294 (void)PerlIO_ungetc(IoIFP(io),i);
3296 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
3298 len = PerlIO_get_bufsiz(IoIFP(io));
3299 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
3300 /* sfio can have large buffers - limit to 512 */
3305 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
3307 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
3309 SETERRNO(EBADF,RMS_IFI);
3317 PL_laststype = OP_STAT;
3318 sv_setpv(PL_statname, SvPV_nolen_const(sv));
3319 if (!(fp = PerlIO_open(SvPVX_const(PL_statname), "r"))) {
3320 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname),
3322 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
3325 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(fp), &PL_statcache);
3326 if (PL_laststatval < 0) {
3327 (void)PerlIO_close(fp);
3330 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, NULL);
3331 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3332 (void)PerlIO_close(fp);
3334 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
3335 RETPUSHNO; /* special case NFS directories */
3336 RETPUSHYES; /* null file is anything */
3341 /* now scan s to look for textiness */
3342 /* XXX ASCII dependent code */
3344 #if defined(DOSISH) || defined(USEMYBINMODE)
3345 /* ignore trailing ^Z on short files */
3346 if (len && len < (I32)sizeof(tbuf) && tbuf[len-1] == 26)
3350 for (i = 0; i < len; i++, s++) {
3351 if (!*s) { /* null never allowed in text */
3356 else if (!(isPRINT(*s) || isSPACE(*s)))
3359 else if (*s & 128) {
3361 if (IN_LOCALE_RUNTIME && isALPHA_LC(*s))
3364 /* utf8 characters don't count as odd */
3365 if (UTF8_IS_START(*s)) {
3366 int ulen = UTF8SKIP(s);
3367 if (ulen < len - i) {
3369 for (j = 1; j < ulen; j++) {
3370 if (!UTF8_IS_CONTINUATION(s[j]))
3373 --ulen; /* loop does extra increment */
3383 *s != '\n' && *s != '\r' && *s != '\b' &&
3384 *s != '\t' && *s != '\f' && *s != 27)
3389 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
3400 const char *tmps = NULL;
3404 SV * const sv = POPs;
3405 if (PL_op->op_flags & OPf_SPECIAL) {
3406 gv = gv_fetchsv(sv, 0, SVt_PVIO);
3408 else if (SvTYPE(sv) == SVt_PVGV) {
3411 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
3415 tmps = SvPV_nolen_const(sv);
3419 if( !gv && (!tmps || !*tmps) ) {
3420 HV * const table = GvHVn(PL_envgv);
3423 if ( (svp = hv_fetchs(table, "HOME", FALSE))
3424 || (svp = hv_fetchs(table, "LOGDIR", FALSE))
3426 || (svp = hv_fetchs(table, "SYS$LOGIN", FALSE))
3431 deprecate("chdir('') or chdir(undef) as chdir()");
3432 tmps = SvPV_nolen_const(*svp);
3436 TAINT_PROPER("chdir");
3441 TAINT_PROPER("chdir");
3444 IO* const io = GvIO(gv);
3447 PUSHi(fchdir(my_dirfd(IoDIRP(io))) >= 0);
3448 } else if (IoIFP(io)) {
3449 PUSHi(fchdir(PerlIO_fileno(IoIFP(io))) >= 0);
3452 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
3453 report_evil_fh(gv, io, PL_op->op_type);
3454 SETERRNO(EBADF, RMS_IFI);
3459 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
3460 report_evil_fh(gv, io, PL_op->op_type);
3461 SETERRNO(EBADF,RMS_IFI);
3465 DIE(aTHX_ PL_no_func, "fchdir");
3469 PUSHi( PerlDir_chdir(tmps) >= 0 );
3471 /* Clear the DEFAULT element of ENV so we'll get the new value
3473 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
3480 dVAR; dSP; dMARK; dTARGET;
3481 const I32 value = (I32)apply(PL_op->op_type, MARK, SP);
3492 char * const tmps = POPpx;
3493 TAINT_PROPER("chroot");
3494 PUSHi( chroot(tmps) >= 0 );
3497 DIE(aTHX_ PL_no_func, "chroot");
3505 const char * const tmps2 = POPpconstx;
3506 const char * const tmps = SvPV_nolen_const(TOPs);
3507 TAINT_PROPER("rename");
3509 anum = PerlLIO_rename(tmps, tmps2);
3511 if (!(anum = PerlLIO_stat(tmps, &PL_statbuf))) {
3512 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3515 if (PL_euid || PerlLIO_stat(tmps2, &PL_statbuf) < 0 || !S_ISDIR(PL_statbuf.st_mode))
3516 (void)UNLINK(tmps2);
3517 if (!(anum = link(tmps, tmps2)))
3518 anum = UNLINK(tmps);
3526 #if defined(HAS_LINK) || defined(HAS_SYMLINK)
3530 const int op_type = PL_op->op_type;
3534 if (op_type == OP_LINK)
3535 DIE(aTHX_ PL_no_func, "link");
3537 # ifndef HAS_SYMLINK
3538 if (op_type == OP_SYMLINK)
3539 DIE(aTHX_ PL_no_func, "symlink");
3543 const char * const tmps2 = POPpconstx;
3544 const char * const tmps = SvPV_nolen_const(TOPs);
3545 TAINT_PROPER(PL_op_desc[op_type]);
3547 # if defined(HAS_LINK)
3548 # if defined(HAS_SYMLINK)
3549 /* Both present - need to choose which. */
3550 (op_type == OP_LINK) ?
3551 PerlLIO_link(tmps, tmps2) : symlink(tmps, tmps2);
3553 /* Only have link, so calls to pp_symlink will have DIE()d above. */
3554 PerlLIO_link(tmps, tmps2);
3557 # if defined(HAS_SYMLINK)
3558 /* Only have symlink, so calls to pp_link will have DIE()d above. */
3559 symlink(tmps, tmps2);
3564 SETi( result >= 0 );
3571 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
3582 char buf[MAXPATHLEN];
3585 #ifndef INCOMPLETE_TAINTS
3589 len = readlink(tmps, buf, sizeof(buf) - 1);
3597 RETSETUNDEF; /* just pretend it's a normal file */
3601 #if !defined(HAS_MKDIR) || !defined(HAS_RMDIR)
3603 S_dooneliner(pTHX_ const char *cmd, const char *filename)
3605 char * const save_filename = filename;
3610 Size_t size = strlen(cmd) + (strlen(filename) * 2) + 10;
3612 Newx(cmdline, size, char);
3613 my_strlcpy(cmdline, cmd, size);
3614 my_strlcat(cmdline, " ", size);
3615 for (s = cmdline + strlen(cmdline); *filename; ) {
3619 if (s - cmdline < size)
3620 my_strlcpy(s, " 2>&1", size - (s - cmdline));
3621 myfp = PerlProc_popen(cmdline, "r");
3625 SV * const tmpsv = sv_newmortal();
3626 /* Need to save/restore 'PL_rs' ?? */
3627 s = sv_gets(tmpsv, myfp, 0);
3628 (void)PerlProc_pclose(myfp);
3632 #ifdef HAS_SYS_ERRLIST
3637 /* you don't see this */
3638 const char * const errmsg =
3639 #ifdef HAS_SYS_ERRLIST
3647 if (instr(s, errmsg)) {
3654 #define EACCES EPERM
3656 if (instr(s, "cannot make"))
3657 SETERRNO(EEXIST,RMS_FEX);
3658 else if (instr(s, "existing file"))
3659 SETERRNO(EEXIST,RMS_FEX);
3660 else if (instr(s, "ile exists"))
3661 SETERRNO(EEXIST,RMS_FEX);
3662 else if (instr(s, "non-exist"))
3663 SETERRNO(ENOENT,RMS_FNF);
3664 else if (instr(s, "does not exist"))
3665 SETERRNO(ENOENT,RMS_FNF);
3666 else if (instr(s, "not empty"))
3667 SETERRNO(EBUSY,SS_DEVOFFLINE);
3668 else if (instr(s, "cannot access"))
3669 SETERRNO(EACCES,RMS_PRV);
3671 SETERRNO(EPERM,RMS_PRV);
3674 else { /* some mkdirs return no failure indication */
3675 anum = (PerlLIO_stat(save_filename, &PL_statbuf) >= 0);
3676 if (PL_op->op_type == OP_RMDIR)
3681 SETERRNO(EACCES,RMS_PRV); /* a guess */
3690 /* This macro removes trailing slashes from a directory name.
3691 * Different operating and file systems take differently to
3692 * trailing slashes. According to POSIX 1003.1 1996 Edition
3693 * any number of trailing slashes should be allowed.
3694 * Thusly we snip them away so that even non-conforming
3695 * systems are happy.
3696 * We should probably do this "filtering" for all
3697 * the functions that expect (potentially) directory names:
3698 * -d, chdir(), chmod(), chown(), chroot(), fcntl()?,
3699 * (mkdir()), opendir(), rename(), rmdir(), stat(). --jhi */
3701 #define TRIMSLASHES(tmps,len,copy) (tmps) = SvPV_const(TOPs, (len)); \
3702 if ((len) > 1 && (tmps)[(len)-1] == '/') { \
3705 } while ((len) > 1 && (tmps)[(len)-1] == '/'); \
3706 (tmps) = savepvn((tmps), (len)); \
3716 const int mode = (MAXARG > 1) ? POPi : 0777;
3718 TRIMSLASHES(tmps,len,copy);
3720 TAINT_PROPER("mkdir");
3722 SETi( PerlDir_mkdir(tmps, mode) >= 0 );
3726 SETi( dooneliner("mkdir", tmps) );
3727 oldumask = PerlLIO_umask(0);
3728 PerlLIO_umask(oldumask);
3729 PerlLIO_chmod(tmps, (mode & ~oldumask) & 0777);
3744 TRIMSLASHES(tmps,len,copy);
3745 TAINT_PROPER("rmdir");
3747 SETi( PerlDir_rmdir(tmps) >= 0 );
3749 SETi( dooneliner("rmdir", tmps) );
3756 /* Directory calls. */
3760 #if defined(Direntry_t) && defined(HAS_READDIR)
3762 const char * const dirname = POPpconstx;
3763 GV * const gv = (GV*)POPs;
3764 register IO * const io = GvIOn(gv);
3769 if ((IoIFP(io) || IoOFP(io)) && ckWARN2(WARN_IO, WARN_DEPRECATED))
3770 Perl_warner(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
3771 "Opening filehandle %s also as a directory", GvENAME(gv));
3773 PerlDir_close(IoDIRP(io));
3774 if (!(IoDIRP(io) = PerlDir_open(dirname)))
3780 SETERRNO(EBADF,RMS_DIR);
3783 DIE(aTHX_ PL_no_dir_func, "opendir");
3789 #if !defined(Direntry_t) || !defined(HAS_READDIR)
3790 DIE(aTHX_ PL_no_dir_func, "readdir");
3792 #if !defined(I_DIRENT) && !defined(VMS)
3793 Direntry_t *readdir (DIR *);
3799 const I32 gimme = GIMME;
3800 GV * const gv = (GV *)POPs;
3801 register const Direntry_t *dp;
3802 register IO * const io = GvIOn(gv);
3804 if (!io || !IoDIRP(io)) {
3805 if(ckWARN(WARN_IO)) {
3806 Perl_warner(aTHX_ packWARN(WARN_IO),
3807 "readdir() attempted on invalid dirhandle %s", GvENAME(gv));
3813 dp = (Direntry_t *)PerlDir_read(IoDIRP(io));
3817 sv = newSVpvn(dp->d_name, dp->d_namlen);
3819 sv = newSVpv(dp->d_name, 0);
3821 #ifndef INCOMPLETE_TAINTS
3822 if (!(IoFLAGS(io) & IOf_UNTAINT))
3825 XPUSHs(sv_2mortal(sv));
3826 } while (gimme == G_ARRAY);
3828 if (!dp && gimme != G_ARRAY)
3835 SETERRNO(EBADF,RMS_ISI);
3836 if (GIMME == G_ARRAY)
3845 #if defined(HAS_TELLDIR) || defined(telldir)
3847 /* XXX does _anyone_ need this? --AD 2/20/1998 */
3848 /* XXX netbsd still seemed to.
3849 XXX HAS_TELLDIR_PROTO is new style, NEED_TELLDIR_PROTO is old style.
3850 --JHI 1999-Feb-02 */
3851 # if !defined(HAS_TELLDIR_PROTO) || defined(NEED_TELLDIR_PROTO)
3852 long telldir (DIR *);
3854 GV * const gv = (GV*)POPs;
3855 register IO * const io = GvIOn(gv);
3857 if (!io || !IoDIRP(io)) {
3858 if(ckWARN(WARN_IO)) {
3859 Perl_warner(aTHX_ packWARN(WARN_IO),
3860 "telldir() attempted on invalid dirhandle %s", GvENAME(gv));
3865 PUSHi( PerlDir_tell(IoDIRP(io)) );
3869 SETERRNO(EBADF,RMS_ISI);
3872 DIE(aTHX_ PL_no_dir_func, "telldir");
3878 #if defined(HAS_SEEKDIR) || defined(seekdir)
3880 const long along = POPl;
3881 GV * const gv = (GV*)POPs;
3882 register IO * const io = GvIOn(gv);
3884 if (!io || !IoDIRP(io)) {
3885 if(ckWARN(WARN_IO)) {
3886 Perl_warner(aTHX_ packWARN(WARN_IO),
3887 "seekdir() attempted on invalid dirhandle %s", GvENAME(gv));
3891 (void)PerlDir_seek(IoDIRP(io), along);
3896 SETERRNO(EBADF,RMS_ISI);
3899 DIE(aTHX_ PL_no_dir_func, "seekdir");
3905 #if defined(HAS_REWINDDIR) || defined(rewinddir)
3907 GV * const gv = (GV*)POPs;
3908 register IO * const io = GvIOn(gv);
3910 if (!io || !IoDIRP(io)) {
3911 if(ckWARN(WARN_IO)) {
3912 Perl_warner(aTHX_ packWARN(WARN_IO),
3913 "rewinddir() attempted on invalid dirhandle %s", GvENAME(gv));
3917 (void)PerlDir_rewind(IoDIRP(io));
3921 SETERRNO(EBADF,RMS_ISI);
3924 DIE(aTHX_ PL_no_dir_func, "rewinddir");
3930 #if defined(Direntry_t) && defined(HAS_READDIR)
3932 GV * const gv = (GV*)POPs;
3933 register IO * const io = GvIOn(gv);
3935 if (!io || !IoDIRP(io)) {
3936 if(ckWARN(WARN_IO)) {
3937 Perl_warner(aTHX_ packWARN(WARN_IO),
3938 "closedir() attempted on invalid dirhandle %s", GvENAME(gv));
3942 #ifdef VOID_CLOSEDIR
3943 PerlDir_close(IoDIRP(io));
3945 if (PerlDir_close(IoDIRP(io)) < 0) {
3946 IoDIRP(io) = 0; /* Don't try to close again--coredumps on SysV */
3955 SETERRNO(EBADF,RMS_IFI);
3958 DIE(aTHX_ PL_no_dir_func, "closedir");
3962 /* Process control. */
3971 PERL_FLUSHALL_FOR_CHILD;
3972 childpid = PerlProc_fork();
3976 GV * const tmpgv = gv_fetchpvs("$", GV_ADD|GV_NOTQUAL, SVt_PV);
3978 SvREADONLY_off(GvSV(tmpgv));
3979 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3980 SvREADONLY_on(GvSV(tmpgv));
3982 #ifdef THREADS_HAVE_PIDS
3983 PL_ppid = (IV)getppid();
3985 #ifdef PERL_USES_PL_PIDSTATUS
3986 hv_clear(PL_pidstatus); /* no kids, so don't wait for 'em */
3992 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
3997 PERL_FLUSHALL_FOR_CHILD;
3998 childpid = PerlProc_fork();
4004 DIE(aTHX_ PL_no_func, "fork");
4011 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
4016 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
4017 childpid = wait4pid(-1, &argflags, 0);
4019 while ((childpid = wait4pid(-1, &argflags, 0)) == -1 &&
4024 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4025 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
4026 STATUS_NATIVE_CHILD_SET((childpid && childpid != -1) ? argflags : -1);
4028 STATUS_NATIVE_CHILD_SET((childpid > 0) ? argflags : -1);
4033 DIE(aTHX_ PL_no_func, "wait");
4039 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
4041 const int optype = POPi;
4042 const Pid_t pid = TOPi;
4046 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
4047 result = wait4pid(pid, &argflags, optype);
4049 while ((result = wait4pid(pid, &argflags, optype)) == -1 &&
4054 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4055 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
4056 STATUS_NATIVE_CHILD_SET((result && result != -1) ? argflags : -1);
4058 STATUS_NATIVE_CHILD_SET((result > 0) ? argflags : -1);
4063 DIE(aTHX_ PL_no_func, "waitpid");
4069 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
4075 while (++MARK <= SP) {
4076 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
4081 TAINT_PROPER("system");
4083 PERL_FLUSHALL_FOR_CHILD;
4084 #if (defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(OS2) || defined(PERL_MICRO)
4090 if (PerlProc_pipe(pp) >= 0)
4092 while ((childpid = PerlProc_fork()) == -1) {
4093 if (errno != EAGAIN) {
4098 PerlLIO_close(pp[0]);
4099 PerlLIO_close(pp[1]);
4106 Sigsave_t ihand,qhand; /* place to save signals during system() */
4110 PerlLIO_close(pp[1]);
4112 rsignal_save(SIGINT, (Sighandler_t) SIG_IGN, &ihand);
4113 rsignal_save(SIGQUIT, (Sighandler_t) SIG_IGN, &qhand);
4116 result = wait4pid(childpid, &status, 0);
4117 } while (result == -1 && errno == EINTR);
4119 (void)rsignal_restore(SIGINT, &ihand);
4120 (void)rsignal_restore(SIGQUIT, &qhand);
4122 STATUS_NATIVE_CHILD_SET(result == -1 ? -1 : status);
4123 do_execfree(); /* free any memory child malloced on fork */
4130 while (n < sizeof(int)) {
4131 n1 = PerlLIO_read(pp[0],
4132 (void*)(((char*)&errkid)+n),
4138 PerlLIO_close(pp[0]);
4139 if (n) { /* Error */
4140 if (n != sizeof(int))
4141 DIE(aTHX_ "panic: kid popen errno read");
4142 errno = errkid; /* Propagate errno from kid */
4143 STATUS_NATIVE_CHILD_SET(-1);
4146 XPUSHi(STATUS_CURRENT);
4150 PerlLIO_close(pp[0]);
4151 #if defined(HAS_FCNTL) && defined(F_SETFD)
4152 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
4155 if (PL_op->op_flags & OPf_STACKED) {
4156 SV * const really = *++MARK;
4157 value = (I32)do_aexec5(really, MARK, SP, pp[1], did_pipes);
4159 else if (SP - MARK != 1)
4160 value = (I32)do_aexec5(NULL, MARK, SP, pp[1], did_pipes);
4162 value = (I32)do_exec3(SvPVx_nolen(sv_mortalcopy(*SP)), pp[1], did_pipes);
4166 #else /* ! FORK or VMS or OS/2 */
4169 if (PL_op->op_flags & OPf_STACKED) {
4170 SV * const really = *++MARK;
4171 # if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__)
4172 value = (I32)do_aspawn(really, MARK, SP);
4174 value = (I32)do_aspawn(really, (void **)MARK, (void **)SP);
4177 else if (SP - MARK != 1) {
4178 # if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__)
4179 value = (I32)do_aspawn(NULL, MARK, SP);
4181 value = (I32)do_aspawn(NULL, (void **)MARK, (void **)SP);
4185 value = (I32)do_spawn(SvPVx_nolen(sv_mortalcopy(*SP)));
4187 if (PL_statusvalue == -1) /* hint that value must be returned as is */
4189 STATUS_NATIVE_CHILD_SET(value);
4192 XPUSHi(result ? value : STATUS_CURRENT);
4193 #endif /* !FORK or VMS */
4199 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
4204 while (++MARK <= SP) {
4205 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
4210 TAINT_PROPER("exec");
4212 PERL_FLUSHALL_FOR_CHILD;
4213 if (PL_op->op_flags & OPf_STACKED) {
4214 SV * const really = *++MARK;
4215 value = (I32)do_aexec(really, MARK, SP);
4217 else if (SP - MARK != 1)
4219 value = (I32)vms_do_aexec(NULL, MARK, SP);
4223 (void ) do_aspawn(NULL, MARK, SP);
4227 value = (I32)do_aexec(NULL, MARK, SP);
4232 value = (I32)vms_do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
4235 (void) do_spawn(SvPVx_nolen(sv_mortalcopy(*SP)));
4238 value = (I32)do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
4252 # ifdef THREADS_HAVE_PIDS
4253 if (PL_ppid != 1 && getppid() == 1)
4254 /* maybe the parent process has died. Refresh ppid cache */
4258 XPUSHi( getppid() );
4262 DIE(aTHX_ PL_no_func, "getppid");
4271 const Pid_t pid = (MAXARG < 1) ? 0 : SvIVx(POPs);
4274 pgrp = (I32)BSD_GETPGRP(pid);
4276 if (pid != 0 && pid != PerlProc_getpid())
4277 DIE(aTHX_ "POSIX getpgrp can't take an argument");
4283 DIE(aTHX_ PL_no_func, "getpgrp()");
4302 TAINT_PROPER("setpgrp");
4304 SETi( BSD_SETPGRP(pid, pgrp) >= 0 );
4306 if ((pgrp != 0 && pgrp != PerlProc_getpid())
4307 || (pid != 0 && pid != PerlProc_getpid()))
4309 DIE(aTHX_ "setpgrp can't take arguments");
4311 SETi( setpgrp() >= 0 );
4312 #endif /* USE_BSDPGRP */
4315 DIE(aTHX_ PL_no_func, "setpgrp()");
4321 #ifdef HAS_GETPRIORITY
4323 const int who = POPi;
4324 const int which = TOPi;
4325 SETi( getpriority(which, who) );
4328 DIE(aTHX_ PL_no_func, "getpriority()");
4334 #ifdef HAS_SETPRIORITY
4336 const int niceval = POPi;
4337 const int who = POPi;
4338 const int which = TOPi;
4339 TAINT_PROPER("setpriority");
4340 SETi( setpriority(which, who, niceval) >= 0 );
4343 DIE(aTHX_ PL_no_func, "setpriority()");
4353 XPUSHn( time(NULL) );
4355 XPUSHi( time(NULL) );
4367 (void)PerlProc_times(&PL_timesbuf);
4369 (void)PerlProc_times((tbuffer_t *)&PL_timesbuf); /* time.h uses different name for */
4370 /* struct tms, though same data */
4374 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_utime)/(NV)PL_clocktick)));
4375 if (GIMME == G_ARRAY) {
4376 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_stime)/(NV)PL_clocktick)));
4377 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_cutime)/(NV)PL_clocktick)));
4378 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_cstime)/(NV)PL_clocktick)));
4384 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4386 if (GIMME == G_ARRAY) {
4387 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4388 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4389 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4393 DIE(aTHX_ "times not implemented");
4395 #endif /* HAS_TIMES */
4398 #ifdef LOCALTIME_EDGECASE_BROKEN
4399 static struct tm *S_my_localtime (pTHX_ Time_t *tp)
4404 /* No workarounds in the valid range */
4405 if (!tp || *tp < 0x7fff573f || *tp >= 0x80000000)
4406 return (localtime (tp));
4408 /* This edge case is to workaround the undefined behaviour, where the
4409 * TIMEZONE makes the time go beyond the defined range.
4410 * gmtime (0x7fffffff) => 2038-01-19 03:14:07
4411 * If there is a negative offset in TZ, like MET-1METDST, some broken
4412 * implementations of localtime () (like AIX 5.2) barf with bogus
4414 * 0x7fffffff gmtime 2038-01-19 03:14:07
4415 * 0x7fffffff localtime 1901-12-13 21:45:51
4416 * 0x7fffffff mylocaltime 2038-01-19 04:14:07
4417 * 0x3c19137f gmtime 2001-12-13 20:45:51
4418 * 0x3c19137f localtime 2001-12-13 21:45:51
4419 * 0x3c19137f mylocaltime 2001-12-13 21:45:51
4420 * Given that legal timezones are typically between GMT-12 and GMT+12
4421 * we turn back the clock 23 hours before calling the localtime
4422 * function, and add those to the return value. This will never cause
4423 * day wrapping problems, since the edge case is Tue Jan *19*
4425 T = *tp - 82800; /* 23 hour. allows up to GMT-23 */
4428 if (P->tm_hour >= 24) {
4430 P->tm_mday++; /* 18 -> 19 */
4431 P->tm_wday++; /* Mon -> Tue */
4432 P->tm_yday++; /* 18 -> 19 */
4435 } /* S_my_localtime */
4443 const struct tm *tmbuf;
4444 static const char * const dayname[] =
4445 {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
4446 static const char * const monname[] =
4447 {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
4448 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
4454 when = (Time_t)SvNVx(POPs);
4456 when = (Time_t)SvIVx(POPs);
4459 if (PL_op->op_type == OP_LOCALTIME)
4460 #ifdef LOCALTIME_EDGECASE_BROKEN
4461 tmbuf = S_my_localtime(aTHX_ &when);
4463 tmbuf = localtime(&when);
4466 tmbuf = gmtime(&when);
4468 if (GIMME != G_ARRAY) {
4474 tsv = Perl_newSVpvf(aTHX_ "%s %s %2d %02d:%02d:%02d %d",
4475 dayname[tmbuf->tm_wday],
4476 monname[tmbuf->tm_mon],
4481 tmbuf->tm_year + 1900);
4482 PUSHs(sv_2mortal(tsv));
4487 PUSHs(sv_2mortal(newSViv(tmbuf->tm_sec)));
4488 PUSHs(sv_2mortal(newSViv(tmbuf->tm_min)));
4489 PUSHs(sv_2mortal(newSViv(tmbuf->tm_hour)));
4490 PUSHs(sv_2mortal(newSViv(tmbuf->tm_mday)));
4491 PUSHs(sv_2mortal(newSViv(tmbuf->tm_mon)));
4492 PUSHs(sv_2mortal(newSViv(tmbuf->tm_year)));
4493 PUSHs(sv_2mortal(newSViv(tmbuf->tm_wday)));
4494 PUSHs(sv_2mortal(newSViv(tmbuf->tm_yday)));
4495 PUSHs(sv_2mortal(newSViv(tmbuf->tm_isdst)));
4506 anum = alarm((unsigned int)anum);
4513 DIE(aTHX_ PL_no_func, "alarm");
4524 (void)time(&lasttime);
4529 PerlProc_sleep((unsigned int)duration);
4532 XPUSHi(when - lasttime);
4536 /* Shared memory. */
4537 /* Merged with some message passing. */
4541 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4542 dVAR; dSP; dMARK; dTARGET;
4543 const int op_type = PL_op->op_type;
4548 value = (I32)(do_msgsnd(MARK, SP) >= 0);
4551 value = (I32)(do_msgrcv(MARK, SP) >= 0);
4554 value = (I32)(do_semop(MARK, SP) >= 0);
4557 value = (I32)(do_shmio(op_type, MARK, SP) >= 0);
4573 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4574 dVAR; dSP; dMARK; dTARGET;
4575 const int anum = do_ipcget(PL_op->op_type, MARK, SP);
4582 DIE(aTHX_ "System V IPC is not implemented on this machine");
4588 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4589 dVAR; dSP; dMARK; dTARGET;
4590 const int anum = do_ipcctl(PL_op->op_type, MARK, SP);
4598 PUSHp(zero_but_true, ZBTLEN);
4606 /* I can't const this further without getting warnings about the types of
4607 various arrays passed in from structures. */
4609 S_space_join_names_mortal(pTHX_ char *const *array)
4613 if (array && *array) {
4614 target = sv_2mortal(newSVpvs(""));
4616 sv_catpv(target, *array);
4619 sv_catpvs(target, " ");
4622 target = sv_mortalcopy(&PL_sv_no);
4627 /* Get system info. */
4631 #if defined(HAS_GETHOSTBYNAME) || defined(HAS_GETHOSTBYADDR) || defined(HAS_GETHOSTENT)
4633 I32 which = PL_op->op_type;
4634 register char **elem;
4636 #ifndef HAS_GETHOST_PROTOS /* XXX Do we need individual probes? */
4637 struct hostent *gethostbyaddr(Netdb_host_t, Netdb_hlen_t, int);
4638 struct hostent *gethostbyname(Netdb_name_t);
4639 struct hostent *gethostent(void);
4641 struct hostent *hent;
4645 if (which == OP_GHBYNAME) {
4646 #ifdef HAS_GETHOSTBYNAME
4647 const char* const name = POPpbytex;
4648 hent = PerlSock_gethostbyname(name);
4650 DIE(aTHX_ PL_no_sock_func, "gethostbyname");
4653 else if (which == OP_GHBYADDR) {
4654 #ifdef HAS_GETHOSTBYADDR
4655 const int addrtype = POPi;
4656 SV * const addrsv = POPs;
4658 const char *addr = (char *)SvPVbyte(addrsv, addrlen);
4660 hent = PerlSock_gethostbyaddr(addr, (Netdb_hlen_t) addrlen, addrtype);
4662 DIE(aTHX_ PL_no_sock_func, "gethostbyaddr");
4666 #ifdef HAS_GETHOSTENT
4667 hent = PerlSock_gethostent();
4669 DIE(aTHX_ PL_no_sock_func, "gethostent");
4672 #ifdef HOST_NOT_FOUND
4674 #ifdef USE_REENTRANT_API
4675 # ifdef USE_GETHOSTENT_ERRNO
4676 h_errno = PL_reentrant_buffer->_gethostent_errno;
4679 STATUS_UNIX_SET(h_errno);
4683 if (GIMME != G_ARRAY) {
4684 PUSHs(sv = sv_newmortal());
4686 if (which == OP_GHBYNAME) {
4688 sv_setpvn(sv, hent->h_addr, hent->h_length);
4691 sv_setpv(sv, (char*)hent->h_name);
4697 PUSHs(sv_2mortal(newSVpv((char*)hent->h_name, 0)));
4698 PUSHs(space_join_names_mortal(hent->h_aliases));
4699 PUSHs(sv_2mortal(newSViv((IV)hent->h_addrtype)));
4700 len = hent->h_length;
4701 PUSHs(sv_2mortal(newSViv((IV)len)));
4703 for (elem = hent->h_addr_list; elem && *elem; elem++) {
4704 XPUSHs(sv_2mortal(newSVpvn(*elem, len)));
4708 PUSHs(newSVpvn(hent->h_addr, len));
4710 PUSHs(sv_mortalcopy(&PL_sv_no));
4715 DIE(aTHX_ PL_no_sock_func, "gethostent");
4721 #if defined(HAS_GETNETBYNAME) || defined(HAS_GETNETBYADDR) || defined(HAS_GETNETENT)
4723 I32 which = PL_op->op_type;
4725 #ifndef HAS_GETNET_PROTOS /* XXX Do we need individual probes? */
4726 struct netent *getnetbyaddr(Netdb_net_t, int);
4727 struct netent *getnetbyname(Netdb_name_t);
4728 struct netent *getnetent(void);
4730 struct netent *nent;
4732 if (which == OP_GNBYNAME){
4733 #ifdef HAS_GETNETBYNAME
4734 const char * const name = POPpbytex;
4735 nent = PerlSock_getnetbyname(name);
4737 DIE(aTHX_ PL_no_sock_func, "getnetbyname");
4740 else if (which == OP_GNBYADDR) {
4741 #ifdef HAS_GETNETBYADDR
4742 const int addrtype = POPi;
4743 const Netdb_net_t addr = (Netdb_net_t) (U32)POPu;
4744 nent = PerlSock_getnetbyaddr(addr, addrtype);
4746 DIE(aTHX_ PL_no_sock_func, "getnetbyaddr");
4750 #ifdef HAS_GETNETENT
4751 nent = PerlSock_getnetent();
4753 DIE(aTHX_ PL_no_sock_func, "getnetent");
4756 #ifdef HOST_NOT_FOUND
4758 #ifdef USE_REENTRANT_API
4759 # ifdef USE_GETNETENT_ERRNO
4760 h_errno = PL_reentrant_buffer->_getnetent_errno;
4763 STATUS_UNIX_SET(h_errno);
4768 if (GIMME != G_ARRAY) {
4769 PUSHs(sv = sv_newmortal());
4771 if (which == OP_GNBYNAME)
4772 sv_setiv(sv, (IV)nent->n_net);
4774 sv_setpv(sv, nent->n_name);
4780 PUSHs(sv_2mortal(newSVpv(nent->n_name, 0)));
4781 PUSHs(space_join_names_mortal(nent->n_aliases));
4782 PUSHs(sv_2mortal(newSViv((IV)nent->n_addrtype)));
4783 PUSHs(sv_2mortal(newSViv((IV)nent->n_net)));
4788 DIE(aTHX_ PL_no_sock_func, "getnetent");
4794 #if defined(HAS_GETPROTOBYNAME) || defined(HAS_GETPROTOBYNUMBER) || defined(HAS_GETPROTOENT)
4796 I32 which = PL_op->op_type;
4798 #ifndef HAS_GETPROTO_PROTOS /* XXX Do we need individual probes? */
4799 struct protoent *getprotobyname(Netdb_name_t);
4800 struct protoent *getprotobynumber(int);
4801 struct protoent *getprotoent(void);
4803 struct protoent *pent;
4805 if (which == OP_GPBYNAME) {
4806 #ifdef HAS_GETPROTOBYNAME
4807 const char* const name = POPpbytex;
4808 pent = PerlSock_getprotobyname(name);
4810 DIE(aTHX_ PL_no_sock_func, "getprotobyname");
4813 else if (which == OP_GPBYNUMBER) {
4814 #ifdef HAS_GETPROTOBYNUMBER
4815 const int number = POPi;
4816 pent = PerlSock_getprotobynumber(number);
4818 DIE(aTHX_ PL_no_sock_func, "getprotobynumber");
4822 #ifdef HAS_GETPROTOENT
4823 pent = PerlSock_getprotoent();
4825 DIE(aTHX_ PL_no_sock_func, "getprotoent");
4829 if (GIMME != G_ARRAY) {
4830 PUSHs(sv = sv_newmortal());
4832 if (which == OP_GPBYNAME)
4833 sv_setiv(sv, (IV)pent->p_proto);
4835 sv_setpv(sv, pent->p_name);
4841 PUSHs(sv_2mortal(newSVpv(pent->p_name, 0)));
4842 PUSHs(space_join_names_mortal(pent->p_aliases));
4843 PUSHs(sv_2mortal(newSViv((IV)pent->p_proto)));
4848 DIE(aTHX_ PL_no_sock_func, "getprotoent");
4854 #if defined(HAS_GETSERVBYNAME) || defined(HAS_GETSERVBYPORT) || defined(HAS_GETSERVENT)
4856 I32 which = PL_op->op_type;
4858 #ifndef HAS_GETSERV_PROTOS /* XXX Do we need individual probes? */
4859 struct servent *getservbyname(Netdb_name_t, Netdb_name_t);
4860 struct servent *getservbyport(int, Netdb_name_t);
4861 struct servent *getservent(void);
4863 struct servent *sent;
4865 if (which == OP_GSBYNAME) {
4866 #ifdef HAS_GETSERVBYNAME
4867 const char * const proto = POPpbytex;
4868 const char * const name = POPpbytex;
4869 sent = PerlSock_getservbyname(name, (proto && !*proto) ? NULL : proto);
4871 DIE(aTHX_ PL_no_sock_func, "getservbyname");
4874 else if (which == OP_GSBYPORT) {
4875 #ifdef HAS_GETSERVBYPORT
4876 const char * const proto = POPpbytex;
4877 unsigned short port = (unsigned short)POPu;
4879 port = PerlSock_htons(port);
4881 sent = PerlSock_getservbyport(port, (proto && !*proto) ? NULL : proto);
4883 DIE(aTHX_ PL_no_sock_func, "getservbyport");
4887 #ifdef HAS_GETSERVENT
4888 sent = PerlSock_getservent();
4890 DIE(aTHX_ PL_no_sock_func, "getservent");
4894 if (GIMME != G_ARRAY) {
4895 PUSHs(sv = sv_newmortal());
4897 if (which == OP_GSBYNAME) {
4899 sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
4901 sv_setiv(sv, (IV)(sent->s_port));
4905 sv_setpv(sv, sent->s_name);
4911 PUSHs(sv_2mortal(newSVpv(sent->s_name, 0)));
4912 PUSHs(space_join_names_mortal(sent->s_aliases));
4914 PUSHs(sv_2mortal(newSViv((IV)PerlSock_ntohs(sent->s_port))));
4916 PUSHs(sv_2mortal(newSViv((IV)(sent->s_port))));
4918 PUSHs(sv_2mortal(newSVpv(sent->s_proto, 0)));
4923 DIE(aTHX_ PL_no_sock_func, "getservent");
4929 #ifdef HAS_SETHOSTENT
4931 PerlSock_sethostent(TOPi);
4934 DIE(aTHX_ PL_no_sock_func, "sethostent");
4940 #ifdef HAS_SETNETENT
4942 PerlSock_setnetent(TOPi);
4945 DIE(aTHX_ PL_no_sock_func, "setnetent");
4951 #ifdef HAS_SETPROTOENT
4953 PerlSock_setprotoent(TOPi);
4956 DIE(aTHX_ PL_no_sock_func, "setprotoent");
4962 #ifdef HAS_SETSERVENT
4964 PerlSock_setservent(TOPi);
4967 DIE(aTHX_ PL_no_sock_func, "setservent");
4973 #ifdef HAS_ENDHOSTENT
4975 PerlSock_endhostent();
4979 DIE(aTHX_ PL_no_sock_func, "endhostent");
4985 #ifdef HAS_ENDNETENT
4987 PerlSock_endnetent();
4991 DIE(aTHX_ PL_no_sock_func, "endnetent");
4997 #ifdef HAS_ENDPROTOENT
4999 PerlSock_endprotoent();
5003 DIE(aTHX_ PL_no_sock_func, "endprotoent");
5009 #ifdef HAS_ENDSERVENT
5011 PerlSock_endservent();
5015 DIE(aTHX_ PL_no_sock_func, "endservent");
5023 I32 which = PL_op->op_type;
5025 struct passwd *pwent = NULL;
5027 * We currently support only the SysV getsp* shadow password interface.
5028 * The interface is declared in <shadow.h> and often one needs to link
5029 * with -lsecurity or some such.
5030 * This interface is used at least by Solaris, HP-UX, IRIX, and Linux.
5033 * AIX getpwnam() is clever enough to return the encrypted password
5034 * only if the caller (euid?) is root.
5036 * There are at least three other shadow password APIs. Many platforms
5037 * seem to contain more than one interface for accessing the shadow
5038 * password databases, possibly for compatibility reasons.
5039 * The getsp*() is by far he simplest one, the other two interfaces
5040 * are much more complicated, but also very similar to each other.
5045 * struct pr_passwd *getprpw*();
5046 * The password is in
5047 * char getprpw*(...).ufld.fd_encrypt[]
5048 * Mention HAS_GETPRPWNAM here so that Configure probes for it.
5053 * struct es_passwd *getespw*();
5054 * The password is in
5055 * char *(getespw*(...).ufld.fd_encrypt)
5056 * Mention HAS_GETESPWNAM here so that Configure probes for it.
5059 * struct userpw *getuserpw();
5060 * The password is in
5061 * char *(getuserpw(...)).spw_upw_passwd
5062 * (but the de facto standard getpwnam() should work okay)
5064 * Mention I_PROT here so that Configure probes for it.
5066 * In HP-UX for getprpw*() the manual page claims that one should include
5067 * <hpsecurity.h> instead of <sys/security.h>, but that is not needed
5068 * if one includes <shadow.h> as that includes <hpsecurity.h>,
5069 * and pp_sys.c already includes <shadow.h> if there is such.
5071 * Note that <sys/security.h> is already probed for, but currently
5072 * it is only included in special cases.
5074 * In Digital UNIX/Tru64 if using the getespw*() (which seems to be
5075 * be preferred interface, even though also the getprpw*() interface
5076 * is available) one needs to link with -lsecurity -ldb -laud -lm.
5077 * One also needs to call set_auth_parameters() in main() before
5078 * doing anything else, whether one is using getespw*() or getprpw*().
5080 * Note that accessing the shadow databases can be magnitudes
5081 * slower than accessing the standard databases.
5086 # if defined(__CYGWIN__) && defined(USE_REENTRANT_API)
5087 /* Cygwin 1.5.3-1 has buggy getpwnam_r() and getpwuid_r():
5088 * the pw_comment is left uninitialized. */
5089 PL_reentrant_buffer->_pwent_struct.pw_comment = NULL;
5095 const char* const name = POPpbytex;
5096 pwent = getpwnam(name);
5102 pwent = getpwuid(uid);
5106 # ifdef HAS_GETPWENT
5108 #ifdef POSIX_BC /* In some cases pw_passwd has invalid addresses */
5109 if (pwent) pwent = getpwnam(pwent->pw_name);
5112 DIE(aTHX_ PL_no_func, "getpwent");
5118 if (GIMME != G_ARRAY) {
5119 PUSHs(sv = sv_newmortal());
5121 if (which == OP_GPWNAM)
5122 # if Uid_t_sign <= 0
5123 sv_setiv(sv, (IV)pwent->pw_uid);
5125 sv_setuv(sv, (UV)pwent->pw_uid);
5128 sv_setpv(sv, pwent->pw_name);
5134 PUSHs(sv_2mortal(newSVpv(pwent->pw_name, 0)));
5136 PUSHs(sv = sv_2mortal(newSViv(0)));
5137 /* If we have getspnam(), we try to dig up the shadow
5138 * password. If we are underprivileged, the shadow
5139 * interface will set the errno to EACCES or similar,
5140 * and return a null pointer. If this happens, we will
5141 * use the dummy password (usually "*" or "x") from the
5142 * standard password database.
5144 * In theory we could skip the shadow call completely
5145 * if euid != 0 but in practice we cannot know which
5146 * security measures are guarding the shadow databases
5147 * on a random platform.
5149 * Resist the urge to use additional shadow interfaces.
5150 * Divert the urge to writing an extension instead.
5153 /* Some AIX setups falsely(?) detect some getspnam(), which
5154 * has a different API than the Solaris/IRIX one. */
5155 # if defined(HAS_GETSPNAM) && !defined(_AIX)
5157 const int saverrno = errno;
5158 const struct spwd * const spwent = getspnam(pwent->pw_name);
5159 /* Save and restore errno so that
5160 * underprivileged attempts seem
5161 * to have never made the unsccessful
5162 * attempt to retrieve the shadow password. */
5164 if (spwent && spwent->sp_pwdp)
5165 sv_setpv(sv, spwent->sp_pwdp);
5169 if (!SvPOK(sv)) /* Use the standard password, then. */
5170 sv_setpv(sv, pwent->pw_passwd);
5173 # ifndef INCOMPLETE_TAINTS
5174 /* passwd is tainted because user himself can diddle with it.
5175 * admittedly not much and in a very limited way, but nevertheless. */
5179 # if Uid_t_sign <= 0
5180 PUSHs(sv_2mortal(newSViv((IV)pwent->pw_uid)));
5182 PUSHs(sv_2mortal(newSVuv((UV)pwent->pw_uid)));
5185 # if Uid_t_sign <= 0
5186 PUSHs(sv_2mortal(newSViv((IV)pwent->pw_gid)));
5188 PUSHs(sv_2mortal(newSVuv((UV)pwent->pw_gid)));
5190 /* pw_change, pw_quota, and pw_age are mutually exclusive--
5191 * because of the poor interface of the Perl getpw*(),
5192 * not because there's some standard/convention saying so.
5193 * A better interface would have been to return a hash,
5194 * but we are accursed by our history, alas. --jhi. */
5196 PUSHs(sv_2mortal(newSViv((IV)pwent->pw_change)));
5199 PUSHs(sv_2mortal(newSViv((IV)pwent->pw_quota)));
5202 PUSHs(sv_2mortal(newSVpv(pwent->pw_age, 0)));
5204 /* I think that you can never get this compiled, but just in case. */
5205 PUSHs(sv_mortalcopy(&PL_sv_no));
5210 /* pw_class and pw_comment are mutually exclusive--.
5211 * see the above note for pw_change, pw_quota, and pw_age. */
5213 PUSHs(sv_2mortal(newSVpv(pwent->pw_class, 0)));
5216 PUSHs(sv_2mortal(newSVpv(pwent->pw_comment, 0)));
5218 /* I think that you can never get this compiled, but just in case. */
5219 PUSHs(sv_mortalcopy(&PL_sv_no));
5224 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_gecos, 0)));
5226 PUSHs(sv_mortalcopy(&PL_sv_no));
5228 # ifndef INCOMPLETE_TAINTS
5229 /* pw_gecos is tainted because user himself can diddle with it. */
5233 PUSHs(sv_2mortal(newSVpv(pwent->pw_dir, 0)));
5235 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_shell, 0)));
5236 # ifndef INCOMPLETE_TAINTS
5237 /* pw_shell is tainted because user himself can diddle with it. */
5242 PUSHs(sv_2mortal(newSViv((IV)pwent->pw_expire)));
5247 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5253 #if defined(HAS_PASSWD) && defined(HAS_SETPWENT)
5258 DIE(aTHX_ PL_no_func, "setpwent");
5264 #if defined(HAS_PASSWD) && defined(HAS_ENDPWENT)
5269 DIE(aTHX_ PL_no_func, "endpwent");
5277 const I32 which = PL_op->op_type;
5278 const struct group *grent;
5280 if (which == OP_GGRNAM) {
5281 const char* const name = POPpbytex;
5282 grent = (const struct group *)getgrnam(name);
5284 else if (which == OP_GGRGID) {
5285 const Gid_t gid = POPi;
5286 grent = (const struct group *)getgrgid(gid);
5290 grent = (struct group *)getgrent();
5292 DIE(aTHX_ PL_no_func, "getgrent");
5296 if (GIMME != G_ARRAY) {
5297 SV * const sv = sv_newmortal();
5301 if (which == OP_GGRNAM)
5302 sv_setiv(sv, (IV)grent->gr_gid);
5304 sv_setpv(sv, grent->gr_name);
5310 PUSHs(sv_2mortal(newSVpv(grent->gr_name, 0)));
5313 PUSHs(sv_2mortal(newSVpv(grent->gr_passwd, 0)));
5315 PUSHs(sv_mortalcopy(&PL_sv_no));
5318 PUSHs(sv_2mortal(newSViv((IV)grent->gr_gid)));
5320 #if !(defined(_CRAYMPP) && defined(USE_REENTRANT_API))
5321 /* In UNICOS/mk (_CRAYMPP) the multithreading
5322 * versions (getgrnam_r, getgrgid_r)
5323 * seem to return an illegal pointer
5324 * as the group members list, gr_mem.
5325 * getgrent() doesn't even have a _r version
5326 * but the gr_mem is poisonous anyway.
5327 * So yes, you cannot get the list of group
5328 * members if building multithreaded in UNICOS/mk. */
5329 PUSHs(space_join_names_mortal(grent->gr_mem));
5335 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5341 #if defined(HAS_GROUP) && defined(HAS_SETGRENT)
5346 DIE(aTHX_ PL_no_func, "setgrent");
5352 #if defined(HAS_GROUP) && defined(HAS_ENDGRENT)
5357 DIE(aTHX_ PL_no_func, "endgrent");
5367 if (!(tmps = PerlProc_getlogin()))
5369 PUSHp(tmps, strlen(tmps));
5372 DIE(aTHX_ PL_no_func, "getlogin");
5376 /* Miscellaneous. */
5381 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
5382 register I32 items = SP - MARK;
5383 unsigned long a[20];
5388 while (++MARK <= SP) {
5389 if (SvTAINTED(*MARK)) {
5395 TAINT_PROPER("syscall");
5398 /* This probably won't work on machines where sizeof(long) != sizeof(int)
5399 * or where sizeof(long) != sizeof(char*). But such machines will
5400 * not likely have syscall implemented either, so who cares?
5402 while (++MARK <= SP) {
5403 if (SvNIOK(*MARK) || !i)
5404 a[i++] = SvIV(*MARK);
5405 else if (*MARK == &PL_sv_undef)
5408 a[i++] = (unsigned long)SvPV_force_nolen(*MARK);
5414 DIE(aTHX_ "Too many args to syscall");
5416 DIE(aTHX_ "Too few args to syscall");
5418 retval = syscall(a[0]);
5421 retval = syscall(a[0],a[1]);
5424 retval = syscall(a[0],a[1],a[2]);
5427 retval = syscall(a[0],a[1],a[2],a[3]);
5430 retval = syscall(a[0],a[1],a[2],a[3],a[4]);
5433 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5]);
5436 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6]);
5439 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7]);
5443 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8]);
5446 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9]);
5449 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5453 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5457 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5461 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5462 a[10],a[11],a[12],a[13]);
5464 #endif /* atarist */
5470 DIE(aTHX_ PL_no_func, "syscall");
5474 #ifdef FCNTL_EMULATE_FLOCK
5476 /* XXX Emulate flock() with fcntl().
5477 What's really needed is a good file locking module.
5481 fcntl_emulate_flock(int fd, int operation)
5485 switch (operation & ~LOCK_NB) {
5487 flock.l_type = F_RDLCK;
5490 flock.l_type = F_WRLCK;
5493 flock.l_type = F_UNLCK;
5499 flock.l_whence = SEEK_SET;
5500 flock.l_start = flock.l_len = (Off_t)0;
5502 return fcntl(fd, (operation & LOCK_NB) ? F_SETLK : F_SETLKW, &flock);
5505 #endif /* FCNTL_EMULATE_FLOCK */
5507 #ifdef LOCKF_EMULATE_FLOCK
5509 /* XXX Emulate flock() with lockf(). This is just to increase
5510 portability of scripts. The calls are not completely
5511 interchangeable. What's really needed is a good file
5515 /* The lockf() constants might have been defined in <unistd.h>.
5516 Unfortunately, <unistd.h> causes troubles on some mixed
5517 (BSD/POSIX) systems, such as SunOS 4.1.3.
5519 Further, the lockf() constants aren't POSIX, so they might not be
5520 visible if we're compiling with _POSIX_SOURCE defined. Thus, we'll
5521 just stick in the SVID values and be done with it. Sigh.
5525 # define F_ULOCK 0 /* Unlock a previously locked region */
5528 # define F_LOCK 1 /* Lock a region for exclusive use */
5531 # define F_TLOCK 2 /* Test and lock a region for exclusive use */
5534 # define F_TEST 3 /* Test a region for other processes locks */
5538 lockf_emulate_flock(int fd, int operation)
5541 const int save_errno = errno;
5544 /* flock locks entire file so for lockf we need to do the same */
5545 pos = PerlLIO_lseek(fd, (Off_t)0, SEEK_CUR); /* get pos to restore later */
5546 if (pos > 0) /* is seekable and needs to be repositioned */
5547 if (PerlLIO_lseek(fd, (Off_t)0, SEEK_SET) < 0)
5548 pos = -1; /* seek failed, so don't seek back afterwards */
5551 switch (operation) {
5553 /* LOCK_SH - get a shared lock */
5555 /* LOCK_EX - get an exclusive lock */
5557 i = lockf (fd, F_LOCK, 0);
5560 /* LOCK_SH|LOCK_NB - get a non-blocking shared lock */
5561 case LOCK_SH|LOCK_NB:
5562 /* LOCK_EX|LOCK_NB - get a non-blocking exclusive lock */
5563 case LOCK_EX|LOCK_NB:
5564 i = lockf (fd, F_TLOCK, 0);
5566 if ((errno == EAGAIN) || (errno == EACCES))
5567 errno = EWOULDBLOCK;
5570 /* LOCK_UN - unlock (non-blocking is a no-op) */
5572 case LOCK_UN|LOCK_NB:
5573 i = lockf (fd, F_ULOCK, 0);
5576 /* Default - can't decipher operation */
5583 if (pos > 0) /* need to restore position of the handle */
5584 PerlLIO_lseek(fd, pos, SEEK_SET); /* ignore error here */
5589 #endif /* LOCKF_EMULATE_FLOCK */
5593 * c-indentation-style: bsd
5595 * indent-tabs-mode: t
5598 * ex: set ts=8 sts=4 sw=4 noet: