3 * Copyright (C) 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2003, 2004, 2005, 2006, by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
12 * But only a short way ahead its floor and the walls on either side were
13 * cloven by a great fissure, out of which the red glare came, now leaping
14 * up, now dying down into darkness; and all the while far below there was
15 * a rumour and a trouble as of great engines throbbing and labouring.
18 /* This file contains system pp ("push/pop") functions that
19 * execute the opcodes that make up a perl program. A typical pp function
20 * expects to find its arguments on the stack, and usually pushes its
21 * results onto the stack, hence the 'pp' terminology. Each OP structure
22 * contains a pointer to the relevant pp_foo() function.
24 * By 'system', we mean ops which interact with the OS, such as pp_open().
28 #define PERL_IN_PP_SYS_C
32 /* Shadow password support for solaris - pdo@cs.umd.edu
33 * Not just Solaris: at least HP-UX, IRIX, Linux.
34 * The API is from SysV.
36 * There are at least two more shadow interfaces,
37 * see the comments in pp_gpwent().
41 /* There is a MAXINT coming from <shadow.h> <- <hpsecurity.h> <- <values.h>
42 * and another MAXINT from "perl.h" <- <sys/param.h>. */
49 # include <sys/wait.h>
53 # include <sys/resource.h>
62 # include <sys/select.h>
66 /* XXX Configure test needed.
67 h_errno might not be a simple 'int', especially for multi-threaded
68 applications, see "extern int errno in perl.h". Creating such
69 a test requires taking into account the differences between
70 compiling multithreaded and singlethreaded ($ccflags et al).
71 HOST_NOT_FOUND is typically defined in <netdb.h>.
73 #if defined(HOST_NOT_FOUND) && !defined(h_errno) && !defined(__CYGWIN__)
82 struct passwd *getpwnam (char *);
83 struct passwd *getpwuid (Uid_t);
88 struct passwd *getpwent (void);
89 #elif defined (VMS) && defined (my_getpwent)
90 struct passwd *Perl_my_getpwent (pTHX);
99 struct group *getgrnam (char *);
100 struct group *getgrgid (Gid_t);
104 struct group *getgrent (void);
110 # if defined(_MSC_VER) || defined(__MINGW32__)
111 # include <sys/utime.h>
118 # ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
121 # define my_chsize PerlLIO_chsize
124 # define my_chsize PerlLIO_chsize
126 I32 my_chsize(int fd, Off_t length);
132 #else /* no flock() */
134 /* fcntl.h might not have been included, even if it exists, because
135 the current Configure only sets I_FCNTL if it's needed to pick up
136 the *_OK constants. Make sure it has been included before testing
137 the fcntl() locking constants. */
138 # if defined(HAS_FCNTL) && !defined(I_FCNTL)
142 # if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
143 # define FLOCK fcntl_emulate_flock
144 # define FCNTL_EMULATE_FLOCK
145 # else /* no flock() or fcntl(F_SETLK,...) */
147 # define FLOCK lockf_emulate_flock
148 # define LOCKF_EMULATE_FLOCK
150 # endif /* no flock() or fcntl(F_SETLK,...) */
153 static int FLOCK (int, int);
156 * These are the flock() constants. Since this sytems doesn't have
157 * flock(), the values of the constants are probably not available.
171 # endif /* emulating flock() */
173 #endif /* no flock() */
176 static const char zero_but_true[ZBTLEN + 1] = "0 but true";
178 #if defined(I_SYS_ACCESS) && !defined(R_OK)
179 # include <sys/access.h>
182 #if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
183 # define FD_CLOEXEC 1 /* NeXT needs this */
189 /* Missing protos on LynxOS */
190 void sethostent(int);
191 void endhostent(void);
193 void endnetent(void);
194 void setprotoent(int);
195 void endprotoent(void);
196 void setservent(int);
197 void endservent(void);
200 #undef PERL_EFF_ACCESS /* EFFective uid/gid ACCESS */
202 /* AIX 5.2 and below use mktime for localtime, and defines the edge case
203 * for time 0x7fffffff to be valid only in UTC. AIX 5.3 provides localtime64
204 * available in the 32bit environment, which could warrant Configure
205 * checks in the future.
208 #define LOCALTIME_EDGECASE_BROKEN
211 /* F_OK unused: if stat() cannot find it... */
213 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
214 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
215 # define PERL_EFF_ACCESS(p,f) (access((p), (f) | EFF_ONLY_OK))
218 #if !defined(PERL_EFF_ACCESS) && defined(HAS_EACCESS)
219 # ifdef I_SYS_SECURITY
220 # include <sys/security.h>
224 # define PERL_EFF_ACCESS(p,f) (eaccess((p), (f), ACC_SELF))
227 # define PERL_EFF_ACCESS(p,f) (eaccess((p), (f)))
231 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESSX) && defined(ACC_SELF)
233 # define PERL_EFF_ACCESS(p,f) (accessx((p), (f), ACC_SELF))
237 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) \
238 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
239 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
242 S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
244 const Uid_t ruid = getuid();
245 const Uid_t euid = geteuid();
246 const Gid_t rgid = getgid();
247 const Gid_t egid = getegid();
251 #if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
252 Perl_croak(aTHX_ "switching effective uid is not implemented");
255 if (setreuid(euid, ruid))
258 if (setresuid(euid, ruid, (Uid_t)-1))
261 Perl_croak(aTHX_ "entering effective uid failed");
264 #if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
265 Perl_croak(aTHX_ "switching effective gid is not implemented");
268 if (setregid(egid, rgid))
271 if (setresgid(egid, rgid, (Gid_t)-1))
274 Perl_croak(aTHX_ "entering effective gid failed");
277 res = access(path, mode);
280 if (setreuid(ruid, euid))
283 if (setresuid(ruid, euid, (Uid_t)-1))
286 Perl_croak(aTHX_ "leaving effective uid failed");
289 if (setregid(rgid, egid))
292 if (setresgid(rgid, egid, (Gid_t)-1))
295 Perl_croak(aTHX_ "leaving effective gid failed");
300 # define PERL_EFF_ACCESS(p,f) (emulate_eaccess((p), (f)))
303 #if !defined(PERL_EFF_ACCESS)
304 /* With it or without it: anyway you get a warning: either that
305 it is unused, or it is declared static and never defined.
308 S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
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 = PL_curcop->cop_io ? SvPV_nolen_const(PL_curcop->cop_io) : 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)) != Nullch)
355 SV * const sv = NEWSV(56, 79);
356 if (sv_gets(sv, fp, 0) == Nullch) {
360 XPUSHs(sv_2mortal(sv));
361 if (SvLEN(sv) - SvCUR(sv) > 20) {
362 SvPV_shrink_to_cur(sv);
367 STATUS_NATIVE_CHILD_SET(PerlProc_pclose(fp));
368 TAINT; /* "I believe that this is not gratuitous!" */
371 STATUS_NATIVE_CHILD_SET(-1);
372 if (gimme == G_SCALAR)
383 tryAMAGICunTARGET(iter, -1);
385 /* Note that we only ever get here if File::Glob fails to load
386 * without at the same time croaking, for some reason, or if
387 * perl was built with PERL_EXTERNAL_GLOB */
394 * The external globbing program may use things we can't control,
395 * so for security reasons we must assume the worst.
398 taint_proper(PL_no_security, "glob");
402 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
403 PL_last_in_gv = (GV*)*PL_stack_sp--;
405 SAVESPTR(PL_rs); /* This is not permanent, either. */
406 PL_rs = sv_2mortal(newSVpvs("\000"));
409 *SvPVX(PL_rs) = '\n';
413 result = do_readline();
421 PL_last_in_gv = cGVOP_gv;
422 return do_readline();
433 do_join(TARG, &PL_sv_no, MARK, SP);
437 else if (SP == MARK) {
444 tmps = SvPV_const(tmpsv, len);
445 if ((!tmps || !len) && PL_errgv) {
446 SV * const error = ERRSV;
447 SvUPGRADE(error, SVt_PV);
448 if (SvPOK(error) && SvCUR(error))
449 sv_catpvs(error, "\t...caught");
451 tmps = SvPV_const(tmpsv, len);
454 tmpsv = sv_2mortal(newSVpvs("Warning: something's wrong"));
456 Perl_warn(aTHX_ "%"SVf, tmpsv);
468 VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
470 if (SP - MARK != 1) {
472 do_join(TARG, &PL_sv_no, MARK, SP);
474 tmps = SvPV_const(tmpsv, len);
480 tmps = SvROK(tmpsv) ? Nullch : SvPV_const(tmpsv, len);
483 SV * const error = ERRSV;
484 SvUPGRADE(error, SVt_PV);
485 if (multiarg ? SvROK(error) : SvROK(tmpsv)) {
487 SvSetSV(error,tmpsv);
488 else if (sv_isobject(error)) {
489 HV * const stash = SvSTASH(SvRV(error));
490 GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
492 SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
493 SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
500 call_sv((SV*)GvCV(gv),
501 G_SCALAR|G_EVAL|G_KEEPERR);
502 sv_setsv(error,*PL_stack_sp--);
508 if (SvPOK(error) && SvCUR(error))
509 sv_catpvs(error, "\t...propagated");
512 tmps = SvPV_const(tmpsv, len);
518 tmpsv = sv_2mortal(newSVpvs("Died"));
520 DIE(aTHX_ "%"SVf, tmpsv);
536 GV * const gv = (GV *)*++MARK;
539 DIE(aTHX_ PL_no_usym, "filehandle");
540 if ((io = GvIOp(gv)))
541 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
544 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
546 /* Method's args are same as ours ... */
547 /* ... except handle is replaced by the object */
548 *MARK-- = SvTIED_obj((SV*)io, mg);
552 call_method("OPEN", G_SCALAR);
566 tmps = SvPV_const(sv, len);
567 ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, Nullfp, MARK+1, (SP-MARK));
570 PUSHi( (I32)PL_forkprocess );
571 else if (PL_forkprocess == 0) /* we are a new child */
583 GV * const gv = (MAXARG == 0) ? PL_defoutgv : (GV*)POPs;
585 if (gv && (io = GvIO(gv))
586 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
589 XPUSHs(SvTIED_obj((SV*)io, mg));
592 call_method("CLOSE", G_SCALAR);
598 PUSHs(boolSV(do_close(gv, TRUE)));
611 GV * const wgv = (GV*)POPs;
612 GV * const rgv = (GV*)POPs;
617 if (SvTYPE(rgv) != SVt_PVGV || SvTYPE(wgv) != SVt_PVGV)
618 DIE(aTHX_ PL_no_usym, "filehandle");
623 do_close(rgv, FALSE);
625 do_close(wgv, FALSE);
627 if (PerlProc_pipe(fd) < 0)
630 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
631 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
632 IoOFP(rstio) = IoIFP(rstio);
633 IoIFP(wstio) = IoOFP(wstio);
634 IoTYPE(rstio) = IoTYPE_RDONLY;
635 IoTYPE(wstio) = IoTYPE_WRONLY;
637 if (!IoIFP(rstio) || !IoOFP(wstio)) {
638 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
639 else PerlLIO_close(fd[0]);
640 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
641 else PerlLIO_close(fd[1]);
644 #if defined(HAS_FCNTL) && defined(F_SETFD)
645 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
646 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
653 DIE(aTHX_ PL_no_func, "pipe");
669 if (gv && (io = GvIO(gv))
670 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
673 XPUSHs(SvTIED_obj((SV*)io, mg));
676 call_method("FILENO", G_SCALAR);
682 if (!gv || !(io = GvIO(gv)) || !(fp = IoIFP(io))) {
683 /* Can't do this because people seem to do things like
684 defined(fileno($foo)) to check whether $foo is a valid fh.
685 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
686 report_evil_fh(gv, io, PL_op->op_type);
691 PUSHi(PerlIO_fileno(fp));
704 anum = PerlLIO_umask(0);
705 (void)PerlLIO_umask(anum);
708 anum = PerlLIO_umask(POPi);
709 TAINT_PROPER("umask");
712 /* Only DIE if trying to restrict permissions on "user" (self).
713 * Otherwise it's harmless and more useful to just return undef
714 * since 'group' and 'other' concepts probably don't exist here. */
715 if (MAXARG >= 1 && (POPi & 0700))
716 DIE(aTHX_ "umask not implemented");
717 XPUSHs(&PL_sv_undef);
739 if (gv && (io = GvIO(gv))
740 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
743 XPUSHs(SvTIED_obj((SV*)io, mg));
748 call_method("BINMODE", G_SCALAR);
755 if (!(io = GvIO(gv)) || !(fp = IoIFP(io))) {
756 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
757 report_evil_fh(gv, io, PL_op->op_type);
758 SETERRNO(EBADF,RMS_IFI);
763 if (PerlIO_binmode(aTHX_ fp,IoTYPE(io),mode_from_discipline(discp),
764 (discp) ? SvPV_nolen_const(discp) : Nullch)) {
765 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
766 if (!PerlIO_binmode(aTHX_ IoOFP(io),IoTYPE(io),
767 mode_from_discipline(discp),
768 (discp) ? SvPV_nolen_const(discp) : Nullch)) {
788 const I32 markoff = MARK - PL_stack_base;
789 const char *methname;
790 int how = PERL_MAGIC_tied;
794 switch(SvTYPE(varsv)) {
796 methname = "TIEHASH";
797 HvEITER_set((HV *)varsv, 0);
800 methname = "TIEARRAY";
803 #ifdef GV_UNIQUE_CHECK
804 if (GvUNIQUE((GV*)varsv)) {
805 Perl_croak(aTHX_ "Attempt to tie unique GV");
808 methname = "TIEHANDLE";
809 how = PERL_MAGIC_tiedscalar;
810 /* For tied filehandles, we apply tiedscalar magic to the IO
811 slot of the GP rather than the GV itself. AMS 20010812 */
813 GvIOp(varsv) = newIO();
814 varsv = (SV *)GvIOp(varsv);
817 methname = "TIESCALAR";
818 how = PERL_MAGIC_tiedscalar;
822 if (sv_isobject(*MARK)) {
824 PUSHSTACKi(PERLSI_MAGIC);
826 EXTEND(SP,(I32)items);
830 call_method(methname, G_SCALAR);
833 /* Not clear why we don't call call_method here too.
834 * perhaps to get different error message ?
836 stash = gv_stashsv(*MARK, FALSE);
837 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
838 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
842 PUSHSTACKi(PERLSI_MAGIC);
844 EXTEND(SP,(I32)items);
848 call_sv((SV*)GvCV(gv), G_SCALAR);
854 if (sv_isobject(sv)) {
855 sv_unmagic(varsv, how);
856 /* Croak if a self-tie on an aggregate is attempted. */
857 if (varsv == SvRV(sv) &&
858 (SvTYPE(varsv) == SVt_PVAV ||
859 SvTYPE(varsv) == SVt_PVHV))
861 "Self-ties of arrays and hashes are not supported");
862 sv_magic(varsv, (SvRV(sv) == varsv ? Nullsv : sv), how, Nullch, 0);
865 SP = PL_stack_base + markoff;
875 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
876 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
878 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
881 if ((mg = SvTIED_mg(sv, how))) {
882 SV * const obj = SvRV(SvTIED_obj(sv, mg));
884 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
886 if (gv && isGV(gv) && (cv = GvCV(gv))) {
888 XPUSHs(SvTIED_obj((SV*)gv, mg));
889 XPUSHs(sv_2mortal(newSViv(SvREFCNT(obj)-1)));
892 call_sv((SV *)cv, G_VOID);
896 else if (mg && SvREFCNT(obj) > 1 && ckWARN(WARN_UNTIE)) {
897 Perl_warner(aTHX_ packWARN(WARN_UNTIE),
898 "untie attempted while %"UVuf" inner references still exist",
899 (UV)SvREFCNT(obj) - 1 ) ;
903 sv_unmagic(sv, how) ;
913 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
914 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
916 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
919 if ((mg = SvTIED_mg(sv, how))) {
920 SV *osv = SvTIED_obj(sv, mg);
921 if (osv == mg->mg_obj)
922 osv = sv_mortalcopy(osv);
936 HV * const hv = (HV*)POPs;
937 SV * const sv = sv_mortalcopy(&PL_sv_no);
939 sv_setpv(sv, "AnyDBM_File");
940 stash = gv_stashsv(sv, FALSE);
941 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
943 require_pv("AnyDBM_File.pm");
945 if (!(gv = gv_fetchmethod(stash, "TIEHASH")))
946 DIE(aTHX_ "No dbm on this machine");
956 PUSHs(sv_2mortal(newSVuv(O_RDWR|O_CREAT)));
958 PUSHs(sv_2mortal(newSVuv(O_RDWR)));
961 call_sv((SV*)GvCV(gv), G_SCALAR);
964 if (!sv_isobject(TOPs)) {
969 PUSHs(sv_2mortal(newSVuv(O_RDONLY)));
972 call_sv((SV*)GvCV(gv), G_SCALAR);
976 if (sv_isobject(TOPs)) {
977 sv_unmagic((SV *) hv, PERL_MAGIC_tied);
978 sv_magic((SV*)hv, TOPs, PERL_MAGIC_tied, Nullch, 0);
995 struct timeval timebuf;
996 struct timeval *tbuf = &timebuf;
999 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1004 # if BYTEORDER & 0xf0000
1005 # define ORDERBYTE (0x88888888 - BYTEORDER)
1007 # define ORDERBYTE (0x4444 - BYTEORDER)
1013 for (i = 1; i <= 3; i++) {
1014 SV * const sv = SP[i];
1017 if (SvREADONLY(sv)) {
1019 sv_force_normal_flags(sv, 0);
1020 if (SvREADONLY(sv) && !(SvPOK(sv) && SvCUR(sv) == 0))
1021 DIE(aTHX_ PL_no_modify);
1024 if (ckWARN(WARN_MISC))
1025 Perl_warner(aTHX_ packWARN(WARN_MISC), "Non-string passed as bitmask");
1026 SvPV_force_nolen(sv); /* force string conversion */
1033 /* little endians can use vecs directly */
1034 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1041 masksize = NFDBITS / NBBY;
1043 masksize = sizeof(long); /* documented int, everyone seems to use long */
1045 Zero(&fd_sets[0], 4, char*);
1048 # if SELECT_MIN_BITS == 1
1049 growsize = sizeof(fd_set);
1051 # if defined(__GLIBC__) && defined(__FD_SETSIZE)
1052 # undef SELECT_MIN_BITS
1053 # define SELECT_MIN_BITS __FD_SETSIZE
1055 /* If SELECT_MIN_BITS is greater than one we most probably will want
1056 * to align the sizes with SELECT_MIN_BITS/8 because for example
1057 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
1058 * UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
1059 * on (sets/tests/clears bits) is 32 bits. */
1060 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
1068 timebuf.tv_sec = (long)value;
1069 value -= (NV)timebuf.tv_sec;
1070 timebuf.tv_usec = (long)(value * 1000000.0);
1073 tbuf = Null(struct timeval*);
1075 for (i = 1; i <= 3; i++) {
1077 if (!SvOK(sv) || SvCUR(sv) == 0) {
1084 Sv_Grow(sv, growsize);
1088 while (++j <= growsize) {
1092 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1094 Newx(fd_sets[i], growsize, char);
1095 for (offset = 0; offset < growsize; offset += masksize) {
1096 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1097 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1100 fd_sets[i] = SvPVX(sv);
1104 #ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1105 /* Can't make just the (void*) conditional because that would be
1106 * cpp #if within cpp macro, and not all compilers like that. */
1107 nfound = PerlSock_select(
1109 (Select_fd_set_t) fd_sets[1],
1110 (Select_fd_set_t) fd_sets[2],
1111 (Select_fd_set_t) fd_sets[3],
1112 (void*) tbuf); /* Workaround for compiler bug. */
1114 nfound = PerlSock_select(
1116 (Select_fd_set_t) fd_sets[1],
1117 (Select_fd_set_t) fd_sets[2],
1118 (Select_fd_set_t) fd_sets[3],
1121 for (i = 1; i <= 3; i++) {
1124 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1126 for (offset = 0; offset < growsize; offset += masksize) {
1127 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1128 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1130 Safefree(fd_sets[i]);
1137 if (GIMME == G_ARRAY && tbuf) {
1138 value = (NV)(timebuf.tv_sec) +
1139 (NV)(timebuf.tv_usec) / 1000000.0;
1140 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
1141 sv_setnv(sv, value);
1145 DIE(aTHX_ "select not implemented");
1150 Perl_setdefout(pTHX_ GV *gv)
1154 (void)SvREFCNT_inc(gv);
1156 SvREFCNT_dec(PL_defoutgv);
1164 GV * const newdefout = (PL_op->op_private > 0) ? ((GV *) POPs) : (GV *) NULL;
1165 GV * egv = GvEGV(PL_defoutgv);
1171 XPUSHs(&PL_sv_undef);
1173 GV * const * const gvp = (GV**)hv_fetch(hv, GvNAME(egv), GvNAMELEN(egv), FALSE);
1174 if (gvp && *gvp == egv) {
1175 gv_efullname4(TARG, PL_defoutgv, Nullch, TRUE);
1179 XPUSHs(sv_2mortal(newRV((SV*)egv)));
1184 if (!GvIO(newdefout))
1185 gv_IOadd(newdefout);
1186 setdefout(newdefout);
1197 GV * const gv = (MAXARG==0) ? PL_stdingv : (GV*)POPs;
1199 if (gv && (io = GvIO(gv))
1200 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1202 const I32 gimme = GIMME_V;
1204 XPUSHs(SvTIED_obj((SV*)io, mg));
1207 call_method("GETC", gimme);
1210 if (gimme == G_SCALAR)
1211 SvSetMagicSV_nosteal(TARG, TOPs);
1214 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
1215 if ((!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
1216 && ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1217 report_evil_fh(gv, io, PL_op->op_type);
1218 SETERRNO(EBADF,RMS_IFI);
1222 sv_setpvn(TARG, " ", 1);
1223 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
1224 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1225 /* Find out how many bytes the char needs */
1226 Size_t len = UTF8SKIP(SvPVX_const(TARG));
1229 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1230 SvCUR_set(TARG,1+len);
1239 S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
1242 register PERL_CONTEXT *cx;
1243 const I32 gimme = GIMME_V;
1248 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
1250 cx->blk_sub.retop = retop;
1252 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), 1);
1254 setdefout(gv); /* locally select filehandle so $% et al work */
1287 SV * const tmpsv = sv_newmortal();
1289 gv_efullname4(tmpsv, fgv, Nullch, FALSE);
1290 name = SvPV_nolen_const(tmpsv);
1292 DIE(aTHX_ "Undefined format \"%s\" called", name);
1294 DIE(aTHX_ "Not a format reference");
1297 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
1299 IoFLAGS(io) &= ~IOf_DIDTOP;
1300 return doform(cv,gv,PL_op->op_next);
1306 GV * const gv = cxstack[cxstack_ix].blk_sub.gv;
1307 register IO * const io = GvIOp(gv);
1308 PerlIO * const ofp = IoOFP(io);
1312 register PERL_CONTEXT *cx;
1314 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
1315 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
1318 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1319 PL_formtarget != PL_toptarget)
1323 if (!IoTOP_GV(io)) {
1326 if (!IoTOP_NAME(io)) {
1328 if (!IoFMT_NAME(io))
1329 IoFMT_NAME(io) = savepv(GvNAME(gv));
1330 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%s_TOP", GvNAME(gv)));
1331 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
1332 if ((topgv && GvFORM(topgv)) ||
1333 !gv_fetchpv("top", 0, SVt_PVFM))
1334 IoTOP_NAME(io) = savesvpv(topname);
1336 IoTOP_NAME(io) = savepvs("top");
1338 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
1339 if (!topgv || !GvFORM(topgv)) {
1340 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1343 IoTOP_GV(io) = topgv;
1345 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1346 I32 lines = IoLINES_LEFT(io);
1347 const char *s = SvPVX_const(PL_formtarget);
1348 if (lines <= 0) /* Yow, header didn't even fit!!! */
1350 while (lines-- > 0) {
1351 s = strchr(s, '\n');
1357 const STRLEN save = SvCUR(PL_formtarget);
1358 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
1359 do_print(PL_formtarget, ofp);
1360 SvCUR_set(PL_formtarget, save);
1361 sv_chop(PL_formtarget, s);
1362 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
1365 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
1366 do_print(PL_formfeed, ofp);
1367 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1369 PL_formtarget = PL_toptarget;
1370 IoFLAGS(io) |= IOf_DIDTOP;
1373 DIE(aTHX_ "bad top format reference");
1376 SV * const sv = sv_newmortal();
1378 gv_efullname4(sv, fgv, Nullch, FALSE);
1379 name = SvPV_nolen_const(sv);
1381 DIE(aTHX_ "Undefined top format \"%s\" called",name);
1385 DIE(aTHX_ "Undefined top format called");
1388 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
1389 return doform(cv,gv,PL_op);
1393 POPBLOCK(cx,PL_curpm);
1399 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
1401 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
1402 else if (ckWARN(WARN_CLOSED))
1403 report_evil_fh(gv, io, PL_op->op_type);
1408 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
1409 if (ckWARN(WARN_IO))
1410 Perl_warner(aTHX_ packWARN(WARN_IO), "page overflow");
1412 if (!do_print(PL_formtarget, fp))
1415 FmLINES(PL_formtarget) = 0;
1416 SvCUR_set(PL_formtarget, 0);
1417 *SvEND(PL_formtarget) = '\0';
1418 if (IoFLAGS(io) & IOf_FLUSH)
1419 (void)PerlIO_flush(fp);
1424 PL_formtarget = PL_bodytarget;
1426 PERL_UNUSED_VAR(newsp);
1427 PERL_UNUSED_VAR(gimme);
1428 return cx->blk_sub.retop;
1433 dVAR; dSP; dMARK; dORIGMARK;
1439 GV * const gv = (PL_op->op_flags & OPf_STACKED) ? (GV*)*++MARK : PL_defoutgv;
1441 if (gv && (io = GvIO(gv))
1442 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1444 if (MARK == ORIGMARK) {
1447 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1451 *MARK = SvTIED_obj((SV*)io, mg);
1454 call_method("PRINTF", G_SCALAR);
1457 MARK = ORIGMARK + 1;
1464 if (!(io = GvIO(gv))) {
1465 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1466 report_evil_fh(gv, io, PL_op->op_type);
1467 SETERRNO(EBADF,RMS_IFI);
1470 else if (!(fp = IoOFP(io))) {
1471 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
1473 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
1474 else if (ckWARN(WARN_CLOSED))
1475 report_evil_fh(gv, io, PL_op->op_type);
1477 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
1481 do_sprintf(sv, SP - MARK, MARK + 1);
1482 if (!do_print(sv, fp))
1485 if (IoFLAGS(io) & IOf_FLUSH)
1486 if (PerlIO_flush(fp) == EOF)
1497 PUSHs(&PL_sv_undef);
1505 const int perm = (MAXARG > 3) ? POPi : 0666;
1506 const int mode = POPi;
1507 SV * const sv = POPs;
1508 GV * const gv = (GV *)POPs;
1511 /* Need TIEHANDLE method ? */
1512 const char * const tmps = SvPV_const(sv, len);
1513 /* FIXME? do_open should do const */
1514 if (do_open(gv, tmps, len, TRUE, mode, perm, Nullfp)) {
1515 IoLINES(GvIOp(gv)) = 0;
1519 PUSHs(&PL_sv_undef);
1526 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
1532 Sock_size_t bufsize;
1540 bool charstart = FALSE;
1541 STRLEN charskip = 0;
1544 GV * const gv = (GV*)*++MARK;
1545 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1546 && gv && (io = GvIO(gv)) )
1548 const MAGIC * mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
1552 *MARK = SvTIED_obj((SV*)io, mg);
1554 call_method("READ", G_SCALAR);
1568 sv_setpvn(bufsv, "", 0);
1569 length = SvIVx(*++MARK);
1572 offset = SvIVx(*++MARK);
1576 if (!io || !IoIFP(io)) {
1577 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1578 report_evil_fh(gv, io, PL_op->op_type);
1579 SETERRNO(EBADF,RMS_IFI);
1582 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
1583 buffer = SvPVutf8_force(bufsv, blen);
1584 /* UTF-8 may not have been set if they are all low bytes */
1589 buffer = SvPV_force(bufsv, blen);
1590 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
1593 DIE(aTHX_ "Negative length");
1601 if (PL_op->op_type == OP_RECV) {
1602 char namebuf[MAXPATHLEN];
1603 #if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
1604 bufsize = sizeof (struct sockaddr_in);
1606 bufsize = sizeof namebuf;
1608 #ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1612 buffer = SvGROW(bufsv, (STRLEN)(length+1));
1613 /* 'offset' means 'flags' here */
1614 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
1615 (struct sockaddr *)namebuf, &bufsize);
1619 /* Bogus return without padding */
1620 bufsize = sizeof (struct sockaddr_in);
1622 SvCUR_set(bufsv, count);
1623 *SvEND(bufsv) = '\0';
1624 (void)SvPOK_only(bufsv);
1628 /* This should not be marked tainted if the fp is marked clean */
1629 if (!(IoFLAGS(io) & IOf_UNTAINT))
1630 SvTAINTED_on(bufsv);
1632 sv_setpvn(TARG, namebuf, bufsize);
1637 if (PL_op->op_type == OP_RECV)
1638 DIE(aTHX_ PL_no_sock_func, "recv");
1640 if (DO_UTF8(bufsv)) {
1641 /* offset adjust in characters not bytes */
1642 blen = sv_len_utf8(bufsv);
1645 if (-offset > (int)blen)
1646 DIE(aTHX_ "Offset outside string");
1649 if (DO_UTF8(bufsv)) {
1650 /* convert offset-as-chars to offset-as-bytes */
1651 if (offset >= (int)blen)
1652 offset += SvCUR(bufsv) - blen;
1654 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
1657 bufsize = SvCUR(bufsv);
1658 /* Allocating length + offset + 1 isn't perfect in the case of reading
1659 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1661 (should be 2 * length + offset + 1, or possibly something longer if
1662 PL_encoding is true) */
1663 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
1664 if (offset > 0 && (Sock_size_t)offset > bufsize) { /* Zero any newly allocated space */
1665 Zero(buffer+bufsize, offset-bufsize, char);
1667 buffer = buffer + offset;
1669 read_target = bufsv;
1671 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1672 concatenate it to the current buffer. */
1674 /* Truncate the existing buffer to the start of where we will be
1676 SvCUR_set(bufsv, offset);
1678 read_target = sv_newmortal();
1679 SvUPGRADE(read_target, SVt_PV);
1680 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1683 if (PL_op->op_type == OP_SYSREAD) {
1684 #ifdef PERL_SOCK_SYSREAD_IS_RECV
1685 if (IoTYPE(io) == IoTYPE_SOCKET) {
1686 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1692 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1697 #ifdef HAS_SOCKET__bad_code_maybe
1698 if (IoTYPE(io) == IoTYPE_SOCKET) {
1699 char namebuf[MAXPATHLEN];
1700 #if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1701 bufsize = sizeof (struct sockaddr_in);
1703 bufsize = sizeof namebuf;
1705 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
1706 (struct sockaddr *)namebuf, &bufsize);
1711 count = PerlIO_read(IoIFP(io), buffer, length);
1712 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1713 if (count == 0 && PerlIO_error(IoIFP(io)))
1717 if ((IoTYPE(io) == IoTYPE_WRONLY) && ckWARN(WARN_IO))
1718 report_evil_fh(gv, io, OP_phoney_OUTPUT_ONLY);
1721 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1722 *SvEND(read_target) = '\0';
1723 (void)SvPOK_only(read_target);
1724 if (fp_utf8 && !IN_BYTES) {
1725 /* Look at utf8 we got back and count the characters */
1726 const char *bend = buffer + count;
1727 while (buffer < bend) {
1729 skip = UTF8SKIP(buffer);
1732 if (buffer - charskip + skip > bend) {
1733 /* partial character - try for rest of it */
1734 length = skip - (bend-buffer);
1735 offset = bend - SvPVX_const(bufsv);
1747 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1748 provided amount read (count) was what was requested (length)
1750 if (got < wanted && count == length) {
1751 length = wanted - got;
1752 offset = bend - SvPVX_const(bufsv);
1755 /* return value is character count */
1759 else if (buffer_utf8) {
1760 /* Let svcatsv upgrade the bytes we read in to utf8.
1761 The buffer is a mortal so will be freed soon. */
1762 sv_catsv_nomg(bufsv, read_target);
1765 /* This should not be marked tainted if the fp is marked clean */
1766 if (!(IoFLAGS(io) & IOf_UNTAINT))
1767 SvTAINTED_on(bufsv);
1779 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
1787 const int op_type = PL_op->op_type;
1789 GV *const gv = (GV*)*++MARK;
1790 if (PL_op->op_type == OP_SYSWRITE
1791 && gv && (io = GvIO(gv))
1792 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1796 if (MARK == SP - 1) {
1798 sv = sv_2mortal(newSViv(sv_len(*SP)));
1804 *(ORIGMARK+1) = SvTIED_obj((SV*)io, mg);
1806 call_method("WRITE", G_SCALAR);
1819 if (op_type == OP_SYSWRITE) {
1821 length = (Size_t) sv_len(bufsv);
1823 #if Size_t_size > IVSIZE
1824 length = (Size_t)SvNVx(*++MARK);
1826 length = (Size_t)SvIVx(*++MARK);
1828 if ((SSize_t)length < 0)
1829 DIE(aTHX_ "Negative length");
1834 if (!io || !IoIFP(io)) {
1836 if (ckWARN(WARN_CLOSED))
1837 report_evil_fh(gv, io, PL_op->op_type);
1838 SETERRNO(EBADF,RMS_IFI);
1842 if (PerlIO_isutf8(IoIFP(io))) {
1843 if (!SvUTF8(bufsv)) {
1844 bufsv = sv_2mortal(newSVsv(bufsv));
1845 buffer = sv_2pvutf8(bufsv, &blen);
1847 buffer = SvPV_const(bufsv, blen);
1850 if (DO_UTF8(bufsv)) {
1851 /* Not modifying source SV, so making a temporary copy. */
1852 bufsv = sv_2mortal(newSVsv(bufsv));
1853 sv_utf8_downgrade(bufsv, FALSE);
1855 buffer = SvPV_const(bufsv, blen);
1858 if (op_type == OP_SYSWRITE) {
1860 if (DO_UTF8(bufsv)) {
1861 /* length and offset are in chars */
1862 blen = sv_len_utf8(bufsv);
1865 offset = SvIVx(*++MARK);
1867 if (-offset > (IV)blen)
1868 DIE(aTHX_ "Offset outside string");
1870 } else if (offset >= (IV)blen && blen > 0)
1871 DIE(aTHX_ "Offset outside string");
1874 if (length > blen - offset)
1875 length = blen - offset;
1876 if (DO_UTF8(bufsv)) {
1877 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
1878 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1881 buffer = buffer+offset;
1883 #ifdef PERL_SOCK_SYSWRITE_IS_SEND
1884 if (IoTYPE(io) == IoTYPE_SOCKET) {
1885 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
1891 /* See the note at doio.c:do_print about filesize limits. --jhi */
1892 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
1898 const int flags = SvIVx(*++MARK);
1901 char * const sockbuf = SvPVx(*++MARK, mlen);
1902 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1903 flags, (struct sockaddr *)sockbuf, mlen);
1907 = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, flags);
1912 DIE(aTHX_ PL_no_sock_func, "send");
1918 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
1919 #if Size_t_size > IVSIZE
1937 if (PL_op->op_flags & OPf_SPECIAL) { /* eof() */
1939 gv = PL_last_in_gv = GvEGV(PL_argvgv);
1941 if (io && !IoIFP(io)) {
1942 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
1944 IoFLAGS(io) &= ~IOf_START;
1945 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, Nullfp);
1946 sv_setpvn(GvSV(gv), "-", 1);
1947 SvSETMAGIC(GvSV(gv));
1949 else if (!nextargv(gv))
1954 gv = PL_last_in_gv; /* eof */
1957 gv = PL_last_in_gv = (GV*)POPs; /* eof(FH) */
1960 IO * const io = GvIO(gv);
1962 if (io && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) {
1964 XPUSHs(SvTIED_obj((SV*)io, mg));
1967 call_method("EOF", G_SCALAR);
1974 PUSHs(boolSV(!gv || do_eof(gv)));
1986 PL_last_in_gv = (GV*)POPs;
1989 if (gv && (io = GvIO(gv))
1990 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1993 XPUSHs(SvTIED_obj((SV*)io, mg));
1996 call_method("TELL", G_SCALAR);
2002 #if LSEEKSIZE > IVSIZE
2003 PUSHn( do_tell(gv) );
2005 PUSHi( do_tell(gv) );
2014 const int whence = POPi;
2015 #if LSEEKSIZE > IVSIZE
2016 const Off_t offset = (Off_t)SvNVx(POPs);
2018 const Off_t offset = (Off_t)SvIVx(POPs);
2022 GV * const gv = PL_last_in_gv = (GV*)POPs;
2024 if (gv && (io = GvIO(gv))
2025 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
2028 XPUSHs(SvTIED_obj((SV*)io, mg));
2029 #if LSEEKSIZE > IVSIZE
2030 XPUSHs(sv_2mortal(newSVnv((NV) offset)));
2032 XPUSHs(sv_2mortal(newSViv(offset)));
2034 XPUSHs(sv_2mortal(newSViv(whence)));
2037 call_method("SEEK", G_SCALAR);
2043 if (PL_op->op_type == OP_SEEK)
2044 PUSHs(boolSV(do_seek(gv, offset, whence)));
2046 const Off_t sought = do_sysseek(gv, offset, whence);
2048 PUSHs(&PL_sv_undef);
2050 SV* const sv = sought ?
2051 #if LSEEKSIZE > IVSIZE
2056 : newSVpvn(zero_but_true, ZBTLEN);
2057 PUSHs(sv_2mortal(sv));
2067 /* There seems to be no consensus on the length type of truncate()
2068 * and ftruncate(), both off_t and size_t have supporters. In
2069 * general one would think that when using large files, off_t is
2070 * at least as wide as size_t, so using an off_t should be okay. */
2071 /* XXX Configure probe for the length type of *truncate() needed XXX */
2074 #if Off_t_size > IVSIZE
2079 /* Checking for length < 0 is problematic as the type might or
2080 * might not be signed: if it is not, clever compilers will moan. */
2081 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
2088 if (PL_op->op_flags & OPf_SPECIAL) {
2089 tmpgv = gv_fetchsv(POPs, 0, SVt_PVIO);
2098 TAINT_PROPER("truncate");
2099 if (!(fp = IoIFP(io))) {
2105 if (ftruncate(PerlIO_fileno(fp), len) < 0)
2107 if (my_chsize(PerlIO_fileno(fp), len) < 0)
2114 SV * const sv = POPs;
2117 if (SvTYPE(sv) == SVt_PVGV) {
2118 tmpgv = (GV*)sv; /* *main::FRED for example */
2119 goto do_ftruncate_gv;
2121 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2122 tmpgv = (GV*) SvRV(sv); /* \*main::FRED for example */
2123 goto do_ftruncate_gv;
2125 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2126 io = (IO*) SvRV(sv); /* *main::FRED{IO} for example */
2127 goto do_ftruncate_io;
2130 name = SvPV_nolen_const(sv);
2131 TAINT_PROPER("truncate");
2133 if (truncate(name, len) < 0)
2137 const int tmpfd = PerlLIO_open(name, O_RDWR);
2142 if (my_chsize(tmpfd, len) < 0)
2144 PerlLIO_close(tmpfd);
2153 SETERRNO(EBADF,RMS_IFI);
2161 SV * const argsv = POPs;
2162 const unsigned int func = POPu;
2163 const int optype = PL_op->op_type;
2164 GV * const gv = (GV*)POPs;
2165 IO * const io = gv ? GvIOn(gv) : Null(IO*);
2169 if (!io || !argsv || !IoIFP(io)) {
2170 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2171 report_evil_fh(gv, io, PL_op->op_type);
2172 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
2176 if (SvPOK(argsv) || !SvNIOK(argsv)) {
2179 s = SvPV_force(argsv, len);
2180 need = IOCPARM_LEN(func);
2182 s = Sv_Grow(argsv, need + 1);
2183 SvCUR_set(argsv, need);
2186 s[SvCUR(argsv)] = 17; /* a little sanity check here */
2189 retval = SvIV(argsv);
2190 s = INT2PTR(char*,retval); /* ouch */
2193 TAINT_PROPER(PL_op_desc[optype]);
2195 if (optype == OP_IOCTL)
2197 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
2199 DIE(aTHX_ "ioctl is not implemented");
2203 DIE(aTHX_ "fcntl is not implemented");
2205 #if defined(OS2) && defined(__EMX__)
2206 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
2208 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
2212 #if defined(HAS_IOCTL) || defined(HAS_FCNTL)
2214 if (s[SvCUR(argsv)] != 17)
2215 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
2217 s[SvCUR(argsv)] = 0; /* put our null back */
2218 SvSETMAGIC(argsv); /* Assume it has changed */
2227 PUSHp(zero_but_true, ZBTLEN);
2240 const int argtype = POPi;
2241 GV * const gv = (MAXARG == 0) ? PL_last_in_gv : (GV*)POPs;
2243 if (gv && (io = GvIO(gv)))
2249 /* XXX Looks to me like io is always NULL at this point */
2251 (void)PerlIO_flush(fp);
2252 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
2255 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2256 report_evil_fh(gv, io, PL_op->op_type);
2258 SETERRNO(EBADF,RMS_IFI);
2263 DIE(aTHX_ PL_no_func, "flock()");
2273 const int protocol = POPi;
2274 const int type = POPi;
2275 const int domain = POPi;
2276 GV * const gv = (GV*)POPs;
2277 register IO * const io = gv ? GvIOn(gv) : NULL;
2281 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2282 report_evil_fh(gv, io, PL_op->op_type);
2284 do_close(gv, FALSE);
2285 SETERRNO(EBADF,LIB_INVARG);
2290 do_close(gv, FALSE);
2292 TAINT_PROPER("socket");
2293 fd = PerlSock_socket(domain, type, protocol);
2296 IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2297 IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
2298 IoTYPE(io) = IoTYPE_SOCKET;
2299 if (!IoIFP(io) || !IoOFP(io)) {
2300 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2301 if (IoOFP(io)) PerlIO_close(IoOFP(io));
2302 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
2305 #if defined(HAS_FCNTL) && defined(F_SETFD)
2306 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2310 setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
2315 DIE(aTHX_ PL_no_sock_func, "socket");
2321 #if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
2323 const int protocol = POPi;
2324 const int type = POPi;
2325 const int domain = POPi;
2326 GV * const gv2 = (GV*)POPs;
2327 GV * const gv1 = (GV*)POPs;
2328 register IO * const io1 = gv1 ? GvIOn(gv1) : NULL;
2329 register IO * const io2 = gv2 ? GvIOn(gv2) : NULL;
2332 if (!gv1 || !gv2 || !io1 || !io2) {
2333 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
2335 report_evil_fh(gv1, io1, PL_op->op_type);
2337 report_evil_fh(gv1, io2, PL_op->op_type);
2340 do_close(gv1, FALSE);
2342 do_close(gv2, FALSE);
2347 do_close(gv1, FALSE);
2349 do_close(gv2, FALSE);
2351 TAINT_PROPER("socketpair");
2352 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
2354 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2355 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
2356 IoTYPE(io1) = IoTYPE_SOCKET;
2357 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2358 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
2359 IoTYPE(io2) = IoTYPE_SOCKET;
2360 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
2361 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2362 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
2363 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
2364 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2365 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
2366 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
2369 #if defined(HAS_FCNTL) && defined(F_SETFD)
2370 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2371 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2376 DIE(aTHX_ PL_no_sock_func, "socketpair");
2384 #ifdef MPE /* Requires PRIV mode to bind() to ports < 1024 */
2385 extern void GETPRIVMODE();
2386 extern void GETUSERMODE();
2388 SV * const addrsv = POPs;
2389 /* OK, so on what platform does bind modify addr? */
2391 GV * const gv = (GV*)POPs;
2392 register IO * const io = GvIOn(gv);
2396 int mpeprivmode = 0;
2399 if (!io || !IoIFP(io))
2402 addr = SvPV_const(addrsv, len);
2403 TAINT_PROPER("bind");
2404 #ifdef MPE /* Deal with MPE bind() peculiarities */
2405 if (((struct sockaddr *)addr)->sa_family == AF_INET) {
2406 /* The address *MUST* stupidly be zero. */
2407 ((struct sockaddr_in *)addr)->sin_addr.s_addr = INADDR_ANY;
2408 /* PRIV mode is required to bind() to ports < 1024. */
2409 if (((struct sockaddr_in *)addr)->sin_port < 1024 &&
2410 ((struct sockaddr_in *)addr)->sin_port > 0) {
2411 GETPRIVMODE(); /* If this fails, we are aborted by MPE/iX. */
2416 if (PerlSock_bind(PerlIO_fileno(IoIFP(io)),
2417 (struct sockaddr *)addr, len) >= 0)
2420 #ifdef MPE /* Switch back to USER mode */
2431 if (ckWARN(WARN_CLOSED))
2432 report_evil_fh(gv, io, PL_op->op_type);
2433 SETERRNO(EBADF,SS_IVCHAN);
2436 DIE(aTHX_ PL_no_sock_func, "bind");
2444 SV * const addrsv = POPs;
2445 GV * const gv = (GV*)POPs;
2446 register IO * const io = GvIOn(gv);
2450 if (!io || !IoIFP(io))
2453 addr = SvPV_const(addrsv, len);
2454 TAINT_PROPER("connect");
2455 if (PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
2461 if (ckWARN(WARN_CLOSED))
2462 report_evil_fh(gv, io, PL_op->op_type);
2463 SETERRNO(EBADF,SS_IVCHAN);
2466 DIE(aTHX_ PL_no_sock_func, "connect");
2474 const int backlog = POPi;
2475 GV * const gv = (GV*)POPs;
2476 register IO * const io = gv ? GvIOn(gv) : NULL;
2478 if (!gv || !io || !IoIFP(io))
2481 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
2487 if (ckWARN(WARN_CLOSED))
2488 report_evil_fh(gv, io, PL_op->op_type);
2489 SETERRNO(EBADF,SS_IVCHAN);
2492 DIE(aTHX_ PL_no_sock_func, "listen");
2502 char namebuf[MAXPATHLEN];
2503 #if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
2504 Sock_size_t len = sizeof (struct sockaddr_in);
2506 Sock_size_t len = sizeof namebuf;
2508 GV * const ggv = (GV*)POPs;
2509 GV * const ngv = (GV*)POPs;
2518 if (!gstio || !IoIFP(gstio))
2522 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
2526 do_close(ngv, FALSE);
2527 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2528 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
2529 IoTYPE(nstio) = IoTYPE_SOCKET;
2530 if (!IoIFP(nstio) || !IoOFP(nstio)) {
2531 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2532 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
2533 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
2536 #if defined(HAS_FCNTL) && defined(F_SETFD)
2537 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2541 len = sizeof (struct sockaddr_in); /* EPOC somehow truncates info */
2542 setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
2544 #ifdef __SCO_VERSION__
2545 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
2548 PUSHp(namebuf, len);
2552 if (ckWARN(WARN_CLOSED))
2553 report_evil_fh(ggv, ggv ? GvIO(ggv) : 0, PL_op->op_type);
2554 SETERRNO(EBADF,SS_IVCHAN);
2560 DIE(aTHX_ PL_no_sock_func, "accept");
2568 const int how = POPi;
2569 GV * const gv = (GV*)POPs;
2570 register IO * const io = GvIOn(gv);
2572 if (!io || !IoIFP(io))
2575 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
2579 if (ckWARN(WARN_CLOSED))
2580 report_evil_fh(gv, io, PL_op->op_type);
2581 SETERRNO(EBADF,SS_IVCHAN);
2584 DIE(aTHX_ PL_no_sock_func, "shutdown");
2592 const int optype = PL_op->op_type;
2593 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(NEWSV(22, 257)) : POPs;
2594 const unsigned int optname = (unsigned int) POPi;
2595 const unsigned int lvl = (unsigned int) POPi;
2596 GV * const gv = (GV*)POPs;
2597 register IO * const io = GvIOn(gv);
2601 if (!io || !IoIFP(io))
2604 fd = PerlIO_fileno(IoIFP(io));
2608 (void)SvPOK_only(sv);
2612 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
2619 #if defined(__SYMBIAN32__)
2620 # define SETSOCKOPT_OPTION_VALUE_T void *
2622 # define SETSOCKOPT_OPTION_VALUE_T const char *
2624 /* XXX TODO: We need to have a proper type (a Configure probe,
2625 * etc.) for what the C headers think of the third argument of
2626 * setsockopt(), the option_value read-only buffer: is it
2627 * a "char *", or a "void *", const or not. Some compilers
2628 * don't take kindly to e.g. assuming that "char *" implicitly
2629 * promotes to a "void *", or to explicitly promoting/demoting
2630 * consts to non/vice versa. The "const void *" is the SUS
2631 * definition, but that does not fly everywhere for the above
2633 SETSOCKOPT_OPTION_VALUE_T buf;
2637 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2641 aint = (int)SvIV(sv);
2642 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
2645 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
2654 if (ckWARN(WARN_CLOSED))
2655 report_evil_fh(gv, io, optype);
2656 SETERRNO(EBADF,SS_IVCHAN);
2661 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
2669 const int optype = PL_op->op_type;
2670 GV * const gv = (GV*)POPs;
2671 register IO * const io = GvIOn(gv);
2676 if (!io || !IoIFP(io))
2679 sv = sv_2mortal(NEWSV(22, 257));
2680 (void)SvPOK_only(sv);
2684 fd = PerlIO_fileno(IoIFP(io));
2686 case OP_GETSOCKNAME:
2687 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2690 case OP_GETPEERNAME:
2691 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2693 #if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2695 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";
2696 /* If the call succeeded, make sure we don't have a zeroed port/addr */
2697 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2698 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
2699 sizeof(u_short) + sizeof(struct in_addr))) {
2706 #ifdef BOGUS_GETNAME_RETURN
2707 /* Interactive Unix, getpeername() and getsockname()
2708 does not return valid namelen */
2709 if (len == BOGUS_GETNAME_RETURN)
2710 len = sizeof(struct sockaddr);
2718 if (ckWARN(WARN_CLOSED))
2719 report_evil_fh(gv, io, optype);
2720 SETERRNO(EBADF,SS_IVCHAN);
2725 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
2739 if (PL_op->op_flags & OPf_REF) {
2741 if (PL_op->op_type == OP_LSTAT) {
2742 if (gv != PL_defgv) {
2743 do_fstat_warning_check:
2744 if (ckWARN(WARN_IO))
2745 Perl_warner(aTHX_ packWARN(WARN_IO),
2746 "lstat() on filehandle %s", GvENAME(gv));
2747 } else if (PL_laststype != OP_LSTAT)
2748 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
2752 if (gv != PL_defgv) {
2753 PL_laststype = OP_STAT;
2755 sv_setpvn(PL_statname, "", 0);
2756 PL_laststatval = (GvIO(gv) && IoIFP(GvIOp(gv))
2757 ? PerlLIO_fstat(PerlIO_fileno(IoIFP(GvIOn(gv))), &PL_statcache) : -1);
2759 if (PL_laststatval < 0) {
2760 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2761 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
2766 SV* const sv = POPs;
2767 if (SvTYPE(sv) == SVt_PVGV) {
2771 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2773 if (PL_op->op_type == OP_LSTAT)
2774 goto do_fstat_warning_check;
2777 sv_setpv(PL_statname, SvPV_nolen_const(sv));
2779 PL_laststype = PL_op->op_type;
2780 if (PL_op->op_type == OP_LSTAT)
2781 PL_laststatval = PerlLIO_lstat(SvPV_nolen_const(PL_statname), &PL_statcache);
2783 PL_laststatval = PerlLIO_stat(SvPV_nolen_const(PL_statname), &PL_statcache);
2784 if (PL_laststatval < 0) {
2785 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname), '\n'))
2786 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
2792 if (gimme != G_ARRAY) {
2793 if (gimme != G_VOID)
2794 XPUSHs(boolSV(max));
2800 PUSHs(sv_2mortal(newSViv(PL_statcache.st_dev)));
2801 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ino)));
2802 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_mode)));
2803 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_nlink)));
2804 #if Uid_t_size > IVSIZE
2805 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_uid)));
2807 # if Uid_t_sign <= 0
2808 PUSHs(sv_2mortal(newSViv(PL_statcache.st_uid)));
2810 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_uid)));
2813 #if Gid_t_size > IVSIZE
2814 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_gid)));
2816 # if Gid_t_sign <= 0
2817 PUSHs(sv_2mortal(newSViv(PL_statcache.st_gid)));
2819 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_gid)));
2822 #ifdef USE_STAT_RDEV
2823 PUSHs(sv_2mortal(newSViv(PL_statcache.st_rdev)));
2825 PUSHs(sv_2mortal(newSVpvs("")));
2827 #if Off_t_size > IVSIZE
2828 PUSHs(sv_2mortal(newSVnv((NV)PL_statcache.st_size)));
2830 PUSHs(sv_2mortal(newSViv(PL_statcache.st_size)));
2833 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_atime)));
2834 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_mtime)));
2835 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_ctime)));
2837 PUSHs(sv_2mortal(newSViv(PL_statcache.st_atime)));
2838 PUSHs(sv_2mortal(newSViv(PL_statcache.st_mtime)));
2839 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ctime)));
2841 #ifdef USE_STAT_BLOCKS
2842 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blksize)));
2843 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blocks)));
2845 PUSHs(sv_2mortal(newSVpvs("")));
2846 PUSHs(sv_2mortal(newSVpvs("")));
2852 /* This macro is used by the stacked filetest operators :
2853 * if the previous filetest failed, short-circuit and pass its value.
2854 * Else, discard it from the stack and continue. --rgs
2856 #define STACKED_FTEST_CHECK if (PL_op->op_private & OPpFT_STACKED) { \
2857 if (TOPs == &PL_sv_no || TOPs == &PL_sv_undef) { RETURN; } \
2858 else { (void)POPs; PUTBACK; } \
2865 /* Not const, because things tweak this below. Not bool, because there's
2866 no guarantee that OPp_FT_ACCESS is <= CHAR_MAX */
2867 #if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2868 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
2869 /* Giving some sort of initial value silences compilers. */
2871 int access_mode = R_OK;
2873 int access_mode = 0;
2876 /* access_mode is never used, but leaving use_access in makes the
2877 conditional compiling below much clearer. */
2880 int stat_mode = S_IRUSR;
2882 bool effective = FALSE;
2885 STACKED_FTEST_CHECK;
2887 switch (PL_op->op_type) {
2889 #if !(defined(HAS_ACCESS) && defined(R_OK))
2895 #if defined(HAS_ACCESS) && defined(W_OK)
2900 stat_mode = S_IWUSR;
2904 #if defined(HAS_ACCESS) && defined(X_OK)
2909 stat_mode = S_IXUSR;
2913 #ifdef PERL_EFF_ACCESS
2916 stat_mode = S_IWUSR;
2920 #ifndef PERL_EFF_ACCESS
2928 #ifdef PERL_EFF_ACCESS
2933 stat_mode = S_IXUSR;
2939 #if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2940 const char *const name = POPpx;
2942 # ifdef PERL_EFF_ACCESS
2943 result = PERL_EFF_ACCESS(name, access_mode);
2945 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
2951 result = access(name, access_mode);
2953 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
2968 if (cando(stat_mode, effective, &PL_statcache))
2977 const int op_type = PL_op->op_type;
2979 STACKED_FTEST_CHECK;
2984 if (op_type == OP_FTIS)
2987 /* You can't dTARGET inside OP_FTIS, because you'll get
2988 "panic: pad_sv po" - the op is not flagged to have a target. */
2992 #if Off_t_size > IVSIZE
2993 PUSHn(PL_statcache.st_size);
2995 PUSHi(PL_statcache.st_size);
2999 PUSHn( (((NV)PL_basetime - PL_statcache.st_mtime)) / 86400.0 );
3002 PUSHn( (((NV)PL_basetime - PL_statcache.st_atime)) / 86400.0 );
3005 PUSHn( (((NV)PL_basetime - PL_statcache.st_ctime)) / 86400.0 );
3018 /* I believe that all these three are likely to be defined on most every
3019 system these days. */
3021 if(PL_op->op_type == OP_FTSUID)
3025 if(PL_op->op_type == OP_FTSGID)
3029 if(PL_op->op_type == OP_FTSVTX)
3033 STACKED_FTEST_CHECK;
3038 switch (PL_op->op_type) {
3040 if (PL_statcache.st_uid == PL_uid)
3044 if (PL_statcache.st_uid == PL_euid)
3048 if (PL_statcache.st_size == 0)
3052 if (S_ISSOCK(PL_statcache.st_mode))
3056 if (S_ISCHR(PL_statcache.st_mode))
3060 if (S_ISBLK(PL_statcache.st_mode))
3064 if (S_ISREG(PL_statcache.st_mode))
3068 if (S_ISDIR(PL_statcache.st_mode))
3072 if (S_ISFIFO(PL_statcache.st_mode))
3077 if (PL_statcache.st_mode & S_ISUID)
3083 if (PL_statcache.st_mode & S_ISGID)
3089 if (PL_statcache.st_mode & S_ISVTX)
3100 I32 result = my_lstat();
3104 if (S_ISLNK(PL_statcache.st_mode))
3117 STACKED_FTEST_CHECK;
3119 if (PL_op->op_flags & OPf_REF)
3121 else if (isGV(TOPs))
3123 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3124 gv = (GV*)SvRV(POPs);
3126 gv = gv_fetchsv(tmpsv = POPs, 0, SVt_PVIO);
3128 if (GvIO(gv) && IoIFP(GvIOp(gv)))
3129 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
3130 else if (tmpsv && SvOK(tmpsv)) {
3131 const char *tmps = SvPV_nolen_const(tmpsv);
3139 if (PerlLIO_isatty(fd))
3144 #if defined(atarist) /* this will work with atariST. Configure will
3145 make guesses for other systems. */
3146 # define FILE_base(f) ((f)->_base)
3147 # define FILE_ptr(f) ((f)->_ptr)
3148 # define FILE_cnt(f) ((f)->_cnt)
3149 # define FILE_bufsiz(f) ((f)->_cnt + ((f)->_ptr - (f)->_base))
3160 register STDCHAR *s;
3166 STACKED_FTEST_CHECK;
3168 if (PL_op->op_flags & OPf_REF)
3170 else if (isGV(TOPs))
3172 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3173 gv = (GV*)SvRV(POPs);
3179 if (gv == PL_defgv) {
3181 io = GvIO(PL_statgv);
3184 goto really_filename;
3189 PL_laststatval = -1;
3190 sv_setpvn(PL_statname, "", 0);
3191 io = GvIO(PL_statgv);
3193 if (io && IoIFP(io)) {
3194 if (! PerlIO_has_base(IoIFP(io)))
3195 DIE(aTHX_ "-T and -B not implemented on filehandles");
3196 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3197 if (PL_laststatval < 0)
3199 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
3200 if (PL_op->op_type == OP_FTTEXT)
3205 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
3206 i = PerlIO_getc(IoIFP(io));
3208 (void)PerlIO_ungetc(IoIFP(io),i);
3210 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
3212 len = PerlIO_get_bufsiz(IoIFP(io));
3213 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
3214 /* sfio can have large buffers - limit to 512 */
3219 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
3221 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
3223 SETERRNO(EBADF,RMS_IFI);
3231 PL_laststype = OP_STAT;
3232 sv_setpv(PL_statname, SvPV_nolen_const(sv));
3233 if (!(fp = PerlIO_open(SvPVX_const(PL_statname), "r"))) {
3234 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname),
3236 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
3239 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(fp), &PL_statcache);
3240 if (PL_laststatval < 0) {
3241 (void)PerlIO_close(fp);
3244 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, Nullch);
3245 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3246 (void)PerlIO_close(fp);
3248 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
3249 RETPUSHNO; /* special case NFS directories */
3250 RETPUSHYES; /* null file is anything */
3255 /* now scan s to look for textiness */
3256 /* XXX ASCII dependent code */
3258 #if defined(DOSISH) || defined(USEMYBINMODE)
3259 /* ignore trailing ^Z on short files */
3260 if (len && len < sizeof(tbuf) && tbuf[len-1] == 26)
3264 for (i = 0; i < len; i++, s++) {
3265 if (!*s) { /* null never allowed in text */
3270 else if (!(isPRINT(*s) || isSPACE(*s)))
3273 else if (*s & 128) {
3275 if (IN_LOCALE_RUNTIME && isALPHA_LC(*s))
3278 /* utf8 characters don't count as odd */
3279 if (UTF8_IS_START(*s)) {
3280 int ulen = UTF8SKIP(s);
3281 if (ulen < len - i) {
3283 for (j = 1; j < ulen; j++) {
3284 if (!UTF8_IS_CONTINUATION(s[j]))
3287 --ulen; /* loop does extra increment */
3297 *s != '\n' && *s != '\r' && *s != '\b' &&
3298 *s != '\t' && *s != '\f' && *s != 27)
3303 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
3314 const char *tmps = NULL;
3318 SV * const sv = POPs;
3319 if (SvTYPE(sv) == SVt_PVGV) {
3322 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
3326 tmps = SvPVx_nolen_const(sv);
3330 if( !gv && (!tmps || !*tmps) ) {
3331 HV * const table = GvHVn(PL_envgv);
3334 if ( (svp = hv_fetchs(table, "HOME", FALSE))
3335 || (svp = hv_fetchs(table, "LOGDIR", FALSE))
3337 || (svp = hv_fetchs(table, "SYS$LOGIN", FALSE))
3342 deprecate("chdir('') or chdir(undef) as chdir()");
3343 tmps = SvPV_nolen_const(*svp);
3347 TAINT_PROPER("chdir");
3352 TAINT_PROPER("chdir");
3355 IO* const io = GvIO(gv);
3358 PUSHi(fchdir(PerlIO_fileno(IoIFP(io))) >= 0);
3360 else if (IoDIRP(io)) {
3362 PUSHi(fchdir(dirfd(IoDIRP(io))) >= 0);
3364 DIE(aTHX_ PL_no_func, "dirfd");
3375 DIE(aTHX_ PL_no_func, "fchdir");
3379 PUSHi( PerlDir_chdir(tmps) >= 0 );
3381 /* Clear the DEFAULT element of ENV so we'll get the new value
3383 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
3390 dVAR; dSP; dMARK; dTARGET;
3391 const I32 value = (I32)apply(PL_op->op_type, MARK, SP);
3402 char * const tmps = POPpx;
3403 TAINT_PROPER("chroot");
3404 PUSHi( chroot(tmps) >= 0 );
3407 DIE(aTHX_ PL_no_func, "chroot");
3415 const char * const tmps2 = POPpconstx;
3416 const char * const tmps = SvPV_nolen_const(TOPs);
3417 TAINT_PROPER("rename");
3419 anum = PerlLIO_rename(tmps, tmps2);
3421 if (!(anum = PerlLIO_stat(tmps, &PL_statbuf))) {
3422 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3425 if (PL_euid || PerlLIO_stat(tmps2, &PL_statbuf) < 0 || !S_ISDIR(PL_statbuf.st_mode))
3426 (void)UNLINK(tmps2);
3427 if (!(anum = link(tmps, tmps2)))
3428 anum = UNLINK(tmps);
3436 #if defined(HAS_LINK) || defined(HAS_SYMLINK)
3440 const int op_type = PL_op->op_type;
3444 if (op_type == OP_LINK)
3445 DIE(aTHX_ PL_no_func, "link");
3447 # ifndef HAS_SYMLINK
3448 if (op_type == OP_SYMLINK)
3449 DIE(aTHX_ PL_no_func, "symlink");
3453 const char * const tmps2 = POPpconstx;
3454 const char * const tmps = SvPV_nolen_const(TOPs);
3455 TAINT_PROPER(PL_op_desc[op_type]);
3457 # if defined(HAS_LINK)
3458 # if defined(HAS_SYMLINK)
3459 /* Both present - need to choose which. */
3460 (op_type == OP_LINK) ?
3461 PerlLIO_link(tmps, tmps2) : symlink(tmps, tmps2);
3463 /* Only have link, so calls to pp_symlink will have DIE()d above. */
3464 PerlLIO_link(tmps, tmps2);
3467 # if defined(HAS_SYMLINK)
3468 /* Only have symlink, so calls to pp_link will have DIE()d above. */
3469 symlink(tmps, tmps2);
3474 SETi( result >= 0 );
3481 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
3492 char buf[MAXPATHLEN];
3495 #ifndef INCOMPLETE_TAINTS
3499 len = readlink(tmps, buf, sizeof(buf) - 1);
3507 RETSETUNDEF; /* just pretend it's a normal file */
3511 #if !defined(HAS_MKDIR) || !defined(HAS_RMDIR)
3513 S_dooneliner(pTHX_ const char *cmd, const char *filename)
3515 char * const save_filename = filename;
3521 Newx(cmdline, strlen(cmd) + (strlen(filename) * 2) + 10, char);
3522 strcpy(cmdline, cmd);
3523 strcat(cmdline, " ");
3524 for (s = cmdline + strlen(cmdline); *filename; ) {
3529 myfp = PerlProc_popen(cmdline, "r");
3533 SV * const tmpsv = sv_newmortal();
3534 /* Need to save/restore 'PL_rs' ?? */
3535 s = sv_gets(tmpsv, myfp, 0);
3536 (void)PerlProc_pclose(myfp);
3540 #ifdef HAS_SYS_ERRLIST
3545 /* you don't see this */
3546 const char * const errmsg =
3547 #ifdef HAS_SYS_ERRLIST
3555 if (instr(s, errmsg)) {
3562 #define EACCES EPERM
3564 if (instr(s, "cannot make"))
3565 SETERRNO(EEXIST,RMS_FEX);
3566 else if (instr(s, "existing file"))
3567 SETERRNO(EEXIST,RMS_FEX);
3568 else if (instr(s, "ile exists"))
3569 SETERRNO(EEXIST,RMS_FEX);
3570 else if (instr(s, "non-exist"))
3571 SETERRNO(ENOENT,RMS_FNF);
3572 else if (instr(s, "does not exist"))
3573 SETERRNO(ENOENT,RMS_FNF);
3574 else if (instr(s, "not empty"))
3575 SETERRNO(EBUSY,SS_DEVOFFLINE);
3576 else if (instr(s, "cannot access"))
3577 SETERRNO(EACCES,RMS_PRV);
3579 SETERRNO(EPERM,RMS_PRV);
3582 else { /* some mkdirs return no failure indication */
3583 anum = (PerlLIO_stat(save_filename, &PL_statbuf) >= 0);
3584 if (PL_op->op_type == OP_RMDIR)
3589 SETERRNO(EACCES,RMS_PRV); /* a guess */
3598 /* This macro removes trailing slashes from a directory name.
3599 * Different operating and file systems take differently to
3600 * trailing slashes. According to POSIX 1003.1 1996 Edition
3601 * any number of trailing slashes should be allowed.
3602 * Thusly we snip them away so that even non-conforming
3603 * systems are happy.
3604 * We should probably do this "filtering" for all
3605 * the functions that expect (potentially) directory names:
3606 * -d, chdir(), chmod(), chown(), chroot(), fcntl()?,
3607 * (mkdir()), opendir(), rename(), rmdir(), stat(). --jhi */
3609 #define TRIMSLASHES(tmps,len,copy) (tmps) = SvPV_const(TOPs, (len)); \
3610 if ((len) > 1 && (tmps)[(len)-1] == '/') { \
3613 } while ((len) > 1 && (tmps)[(len)-1] == '/'); \
3614 (tmps) = savepvn((tmps), (len)); \
3624 const int mode = (MAXARG > 1) ? POPi : 0777;
3626 TRIMSLASHES(tmps,len,copy);
3628 TAINT_PROPER("mkdir");
3630 SETi( PerlDir_mkdir(tmps, mode) >= 0 );
3634 SETi( dooneliner("mkdir", tmps) );
3635 oldumask = PerlLIO_umask(0);
3636 PerlLIO_umask(oldumask);
3637 PerlLIO_chmod(tmps, (mode & ~oldumask) & 0777);
3652 TRIMSLASHES(tmps,len,copy);
3653 TAINT_PROPER("rmdir");
3655 SETi( PerlDir_rmdir(tmps) >= 0 );
3657 SETi( dooneliner("rmdir", tmps) );
3664 /* Directory calls. */
3668 #if defined(Direntry_t) && defined(HAS_READDIR)
3670 const char * const dirname = POPpconstx;
3671 GV * const gv = (GV*)POPs;
3672 register IO * const io = GvIOn(gv);
3678 PerlDir_close(IoDIRP(io));
3679 if (!(IoDIRP(io) = PerlDir_open(dirname)))
3685 SETERRNO(EBADF,RMS_DIR);
3688 DIE(aTHX_ PL_no_dir_func, "opendir");
3694 #if !defined(Direntry_t) || !defined(HAS_READDIR)
3695 DIE(aTHX_ PL_no_dir_func, "readdir");
3697 #if !defined(I_DIRENT) && !defined(VMS)
3698 Direntry_t *readdir (DIR *);
3704 const I32 gimme = GIMME;
3705 GV * const gv = (GV *)POPs;
3706 register const Direntry_t *dp;
3707 register IO * const io = GvIOn(gv);
3709 if (!io || !IoDIRP(io)) {
3710 if(ckWARN(WARN_IO)) {
3711 Perl_warner(aTHX_ packWARN(WARN_IO),
3712 "readdir() attempted on invalid dirhandle %s", GvENAME(gv));
3718 dp = (Direntry_t *)PerlDir_read(IoDIRP(io));
3722 sv = newSVpvn(dp->d_name, dp->d_namlen);
3724 sv = newSVpv(dp->d_name, 0);
3726 #ifndef INCOMPLETE_TAINTS
3727 if (!(IoFLAGS(io) & IOf_UNTAINT))
3730 XPUSHs(sv_2mortal(sv));
3732 while (gimme == G_ARRAY);
3734 if (!dp && gimme != G_ARRAY)
3741 SETERRNO(EBADF,RMS_ISI);
3742 if (GIMME == G_ARRAY)
3751 #if defined(HAS_TELLDIR) || defined(telldir)
3753 /* XXX does _anyone_ need this? --AD 2/20/1998 */
3754 /* XXX netbsd still seemed to.
3755 XXX HAS_TELLDIR_PROTO is new style, NEED_TELLDIR_PROTO is old style.
3756 --JHI 1999-Feb-02 */
3757 # if !defined(HAS_TELLDIR_PROTO) || defined(NEED_TELLDIR_PROTO)
3758 long telldir (DIR *);
3760 GV * const gv = (GV*)POPs;
3761 register IO * const io = GvIOn(gv);
3763 if (!io || !IoDIRP(io)) {
3764 if(ckWARN(WARN_IO)) {
3765 Perl_warner(aTHX_ packWARN(WARN_IO),
3766 "telldir() attempted on invalid dirhandle %s", GvENAME(gv));
3771 PUSHi( PerlDir_tell(IoDIRP(io)) );
3775 SETERRNO(EBADF,RMS_ISI);
3778 DIE(aTHX_ PL_no_dir_func, "telldir");
3784 #if defined(HAS_SEEKDIR) || defined(seekdir)
3786 const long along = POPl;
3787 GV * const gv = (GV*)POPs;
3788 register IO * const io = GvIOn(gv);
3790 if (!io || !IoDIRP(io)) {
3791 if(ckWARN(WARN_IO)) {
3792 Perl_warner(aTHX_ packWARN(WARN_IO),
3793 "seekdir() attempted on invalid dirhandle %s", GvENAME(gv));
3797 (void)PerlDir_seek(IoDIRP(io), along);
3802 SETERRNO(EBADF,RMS_ISI);
3805 DIE(aTHX_ PL_no_dir_func, "seekdir");
3811 #if defined(HAS_REWINDDIR) || defined(rewinddir)
3813 GV * const gv = (GV*)POPs;
3814 register IO * const io = GvIOn(gv);
3816 if (!io || !IoDIRP(io)) {
3817 if(ckWARN(WARN_IO)) {
3818 Perl_warner(aTHX_ packWARN(WARN_IO),
3819 "rewinddir() attempted on invalid dirhandle %s", GvENAME(gv));
3823 (void)PerlDir_rewind(IoDIRP(io));
3827 SETERRNO(EBADF,RMS_ISI);
3830 DIE(aTHX_ PL_no_dir_func, "rewinddir");
3836 #if defined(Direntry_t) && defined(HAS_READDIR)
3838 GV * const gv = (GV*)POPs;
3839 register IO * const io = GvIOn(gv);
3841 if (!io || !IoDIRP(io)) {
3842 if(ckWARN(WARN_IO)) {
3843 Perl_warner(aTHX_ packWARN(WARN_IO),
3844 "closedir() attempted on invalid dirhandle %s", GvENAME(gv));
3848 #ifdef VOID_CLOSEDIR
3849 PerlDir_close(IoDIRP(io));
3851 if (PerlDir_close(IoDIRP(io)) < 0) {
3852 IoDIRP(io) = 0; /* Don't try to close again--coredumps on SysV */
3861 SETERRNO(EBADF,RMS_IFI);
3864 DIE(aTHX_ PL_no_dir_func, "closedir");
3868 /* Process control. */
3877 PERL_FLUSHALL_FOR_CHILD;
3878 childpid = PerlProc_fork();
3882 GV * const tmpgv = gv_fetchpv("$", GV_ADD, SVt_PV);
3884 SvREADONLY_off(GvSV(tmpgv));
3885 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3886 SvREADONLY_on(GvSV(tmpgv));
3888 #ifdef THREADS_HAVE_PIDS
3889 PL_ppid = (IV)getppid();
3891 #ifdef PERL_USES_PL_PIDSTATUS
3892 hv_clear(PL_pidstatus); /* no kids, so don't wait for 'em */
3898 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
3903 PERL_FLUSHALL_FOR_CHILD;
3904 childpid = PerlProc_fork();
3910 DIE(aTHX_ PL_no_func, "fork");
3917 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
3922 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
3923 childpid = wait4pid(-1, &argflags, 0);
3925 while ((childpid = wait4pid(-1, &argflags, 0)) == -1 &&
3930 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
3931 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
3932 STATUS_NATIVE_CHILD_SET((childpid && childpid != -1) ? argflags : -1);
3934 STATUS_NATIVE_CHILD_SET((childpid > 0) ? argflags : -1);
3939 DIE(aTHX_ PL_no_func, "wait");
3945 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
3947 const int optype = POPi;
3948 const Pid_t pid = TOPi;
3952 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
3953 result = wait4pid(pid, &argflags, optype);
3955 while ((result = wait4pid(pid, &argflags, optype)) == -1 &&
3960 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
3961 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
3962 STATUS_NATIVE_CHILD_SET((result && result != -1) ? argflags : -1);
3964 STATUS_NATIVE_CHILD_SET((result > 0) ? argflags : -1);
3969 DIE(aTHX_ PL_no_func, "waitpid");
3975 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
3981 while (++MARK <= SP) {
3982 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
3987 TAINT_PROPER("system");
3989 PERL_FLUSHALL_FOR_CHILD;
3990 #if (defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(OS2) || defined(PERL_MICRO)
3996 if (PerlProc_pipe(pp) >= 0)
3998 while ((childpid = PerlProc_fork()) == -1) {
3999 if (errno != EAGAIN) {
4004 PerlLIO_close(pp[0]);
4005 PerlLIO_close(pp[1]);
4012 Sigsave_t ihand,qhand; /* place to save signals during system() */
4016 PerlLIO_close(pp[1]);
4018 rsignal_save(SIGINT, (Sighandler_t) SIG_IGN, &ihand);
4019 rsignal_save(SIGQUIT, (Sighandler_t) SIG_IGN, &qhand);
4022 result = wait4pid(childpid, &status, 0);
4023 } while (result == -1 && errno == EINTR);
4025 (void)rsignal_restore(SIGINT, &ihand);
4026 (void)rsignal_restore(SIGQUIT, &qhand);
4028 STATUS_NATIVE_CHILD_SET(result == -1 ? -1 : status);
4029 do_execfree(); /* free any memory child malloced on fork */
4035 while (n < sizeof(int)) {
4036 n1 = PerlLIO_read(pp[0],
4037 (void*)(((char*)&errkid)+n),
4043 PerlLIO_close(pp[0]);
4044 if (n) { /* Error */
4045 if (n != sizeof(int))
4046 DIE(aTHX_ "panic: kid popen errno read");
4047 errno = errkid; /* Propagate errno from kid */
4048 STATUS_NATIVE_CHILD_SET(-1);
4051 XPUSHi(STATUS_CURRENT);
4055 PerlLIO_close(pp[0]);
4056 #if defined(HAS_FCNTL) && defined(F_SETFD)
4057 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
4060 if (PL_op->op_flags & OPf_STACKED) {
4061 SV * const really = *++MARK;
4062 value = (I32)do_aexec5(really, MARK, SP, pp[1], did_pipes);
4064 else if (SP - MARK != 1)
4065 value = (I32)do_aexec5(Nullsv, MARK, SP, pp[1], did_pipes);
4067 value = (I32)do_exec3(SvPVx_nolen(sv_mortalcopy(*SP)), pp[1], did_pipes);
4071 #else /* ! FORK or VMS or OS/2 */
4074 if (PL_op->op_flags & OPf_STACKED) {
4075 SV * const really = *++MARK;
4076 # if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__)
4077 value = (I32)do_aspawn(really, MARK, SP);
4079 value = (I32)do_aspawn(really, (void **)MARK, (void **)SP);
4082 else if (SP - MARK != 1) {
4083 # if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__)
4084 value = (I32)do_aspawn(Nullsv, MARK, SP);
4086 value = (I32)do_aspawn(Nullsv, (void **)MARK, (void **)SP);
4090 value = (I32)do_spawn(SvPVx_nolen(sv_mortalcopy(*SP)));
4092 if (PL_statusvalue == -1) /* hint that value must be returned as is */
4094 STATUS_NATIVE_CHILD_SET(value);
4097 XPUSHi(result ? value : STATUS_CURRENT);
4098 #endif /* !FORK or VMS */
4104 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
4109 while (++MARK <= SP) {
4110 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
4115 TAINT_PROPER("exec");
4117 PERL_FLUSHALL_FOR_CHILD;
4118 if (PL_op->op_flags & OPf_STACKED) {
4119 SV * const really = *++MARK;
4120 value = (I32)do_aexec(really, MARK, SP);
4122 else if (SP - MARK != 1)
4124 value = (I32)vms_do_aexec(Nullsv, MARK, SP);
4128 (void ) do_aspawn(Nullsv, MARK, SP);
4132 value = (I32)do_aexec(Nullsv, MARK, SP);
4137 value = (I32)vms_do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
4140 (void) do_spawn(SvPVx_nolen(sv_mortalcopy(*SP)));
4143 value = (I32)do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
4157 # ifdef THREADS_HAVE_PIDS
4158 if (PL_ppid != 1 && getppid() == 1)
4159 /* maybe the parent process has died. Refresh ppid cache */
4163 XPUSHi( getppid() );
4167 DIE(aTHX_ PL_no_func, "getppid");
4176 const Pid_t pid = (MAXARG < 1) ? 0 : SvIVx(POPs);
4179 pgrp = (I32)BSD_GETPGRP(pid);
4181 if (pid != 0 && pid != PerlProc_getpid())
4182 DIE(aTHX_ "POSIX getpgrp can't take an argument");
4188 DIE(aTHX_ PL_no_func, "getpgrp()");
4207 TAINT_PROPER("setpgrp");
4209 SETi( BSD_SETPGRP(pid, pgrp) >= 0 );
4211 if ((pgrp != 0 && pgrp != PerlProc_getpid())
4212 || (pid != 0 && pid != PerlProc_getpid()))
4214 DIE(aTHX_ "setpgrp can't take arguments");
4216 SETi( setpgrp() >= 0 );
4217 #endif /* USE_BSDPGRP */
4220 DIE(aTHX_ PL_no_func, "setpgrp()");
4226 #ifdef HAS_GETPRIORITY
4228 const int who = POPi;
4229 const int which = TOPi;
4230 SETi( getpriority(which, who) );
4233 DIE(aTHX_ PL_no_func, "getpriority()");
4239 #ifdef HAS_SETPRIORITY
4241 const int niceval = POPi;
4242 const int who = POPi;
4243 const int which = TOPi;
4244 TAINT_PROPER("setpriority");
4245 SETi( setpriority(which, who, niceval) >= 0 );
4248 DIE(aTHX_ PL_no_func, "setpriority()");
4258 XPUSHn( time(Null(Time_t*)) );
4260 XPUSHi( time(Null(Time_t*)) );
4272 (void)PerlProc_times(&PL_timesbuf);
4274 (void)PerlProc_times((tbuffer_t *)&PL_timesbuf); /* time.h uses different name for */
4275 /* struct tms, though same data */
4279 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_utime)/(NV)PL_clocktick)));
4280 if (GIMME == G_ARRAY) {
4281 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_stime)/(NV)PL_clocktick)));
4282 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_cutime)/(NV)PL_clocktick)));
4283 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_cstime)/(NV)PL_clocktick)));
4289 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4291 if (GIMME == G_ARRAY) {
4292 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4293 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4294 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4298 DIE(aTHX_ "times not implemented");
4300 #endif /* HAS_TIMES */
4303 #ifdef LOCALTIME_EDGECASE_BROKEN
4304 static struct tm *S_my_localtime (pTHX_ Time_t *tp)
4309 /* No workarounds in the valid range */
4310 if (!tp || *tp < 0x7fff573f || *tp >= 0x80000000)
4311 return (localtime (tp));
4313 /* This edge case is to workaround the undefined behaviour, where the
4314 * TIMEZONE makes the time go beyond the defined range.
4315 * gmtime (0x7fffffff) => 2038-01-19 03:14:07
4316 * If there is a negative offset in TZ, like MET-1METDST, some broken
4317 * implementations of localtime () (like AIX 5.2) barf with bogus
4319 * 0x7fffffff gmtime 2038-01-19 03:14:07
4320 * 0x7fffffff localtime 1901-12-13 21:45:51
4321 * 0x7fffffff mylocaltime 2038-01-19 04:14:07
4322 * 0x3c19137f gmtime 2001-12-13 20:45:51
4323 * 0x3c19137f localtime 2001-12-13 21:45:51
4324 * 0x3c19137f mylocaltime 2001-12-13 21:45:51
4325 * Given that legal timezones are typically between GMT-12 and GMT+12
4326 * we turn back the clock 23 hours before calling the localtime
4327 * function, and add those to the return value. This will never cause
4328 * day wrapping problems, since the edge case is Tue Jan *19*
4330 T = *tp - 82800; /* 23 hour. allows up to GMT-23 */
4333 if (P->tm_hour >= 24) {
4335 P->tm_mday++; /* 18 -> 19 */
4336 P->tm_wday++; /* Mon -> Tue */
4337 P->tm_yday++; /* 18 -> 19 */
4340 } /* S_my_localtime */
4348 const struct tm *tmbuf;
4349 static const char * const dayname[] =
4350 {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
4351 static const char * const monname[] =
4352 {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
4353 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
4359 when = (Time_t)SvNVx(POPs);
4361 when = (Time_t)SvIVx(POPs);
4364 if (PL_op->op_type == OP_LOCALTIME)
4365 #ifdef LOCALTIME_EDGECASE_BROKEN
4366 tmbuf = S_my_localtime(aTHX_ &when);
4368 tmbuf = localtime(&when);
4371 tmbuf = gmtime(&when);
4373 if (GIMME != G_ARRAY) {
4379 tsv = Perl_newSVpvf(aTHX_ "%s %s %2d %02d:%02d:%02d %d",
4380 dayname[tmbuf->tm_wday],
4381 monname[tmbuf->tm_mon],
4386 tmbuf->tm_year + 1900);
4387 PUSHs(sv_2mortal(tsv));
4392 PUSHs(sv_2mortal(newSViv(tmbuf->tm_sec)));
4393 PUSHs(sv_2mortal(newSViv(tmbuf->tm_min)));
4394 PUSHs(sv_2mortal(newSViv(tmbuf->tm_hour)));
4395 PUSHs(sv_2mortal(newSViv(tmbuf->tm_mday)));
4396 PUSHs(sv_2mortal(newSViv(tmbuf->tm_mon)));
4397 PUSHs(sv_2mortal(newSViv(tmbuf->tm_year)));
4398 PUSHs(sv_2mortal(newSViv(tmbuf->tm_wday)));
4399 PUSHs(sv_2mortal(newSViv(tmbuf->tm_yday)));
4400 PUSHs(sv_2mortal(newSViv(tmbuf->tm_isdst)));
4411 anum = alarm((unsigned int)anum);
4418 DIE(aTHX_ PL_no_func, "alarm");
4429 (void)time(&lasttime);
4434 PerlProc_sleep((unsigned int)duration);
4437 XPUSHi(when - lasttime);
4441 /* Shared memory. */
4442 /* Merged with some message passing. */
4446 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4447 dVAR; dSP; dMARK; dTARGET;
4448 const int op_type = PL_op->op_type;
4453 value = (I32)(do_msgsnd(MARK, SP) >= 0);
4456 value = (I32)(do_msgrcv(MARK, SP) >= 0);
4459 value = (I32)(do_semop(MARK, SP) >= 0);
4462 value = (I32)(do_shmio(op_type, MARK, SP) >= 0);
4478 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4479 dVAR; dSP; dMARK; dTARGET;
4480 const int anum = do_ipcget(PL_op->op_type, MARK, SP);
4487 DIE(aTHX_ "System V IPC is not implemented on this machine");
4493 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4494 dVAR; dSP; dMARK; dTARGET;
4495 const int anum = do_ipcctl(PL_op->op_type, MARK, SP);
4503 PUSHp(zero_but_true, ZBTLEN);
4511 /* Get system info. */
4515 #if defined(HAS_GETHOSTBYNAME) || defined(HAS_GETHOSTBYADDR) || defined(HAS_GETHOSTENT)
4517 I32 which = PL_op->op_type;
4518 register char **elem;
4520 #ifndef HAS_GETHOST_PROTOS /* XXX Do we need individual probes? */
4521 struct hostent *gethostbyaddr(Netdb_host_t, Netdb_hlen_t, int);
4522 struct hostent *gethostbyname(Netdb_name_t);
4523 struct hostent *gethostent(void);
4525 struct hostent *hent;
4529 if (which == OP_GHBYNAME) {
4530 #ifdef HAS_GETHOSTBYNAME
4531 const char* const name = POPpbytex;
4532 hent = PerlSock_gethostbyname(name);
4534 DIE(aTHX_ PL_no_sock_func, "gethostbyname");
4537 else if (which == OP_GHBYADDR) {
4538 #ifdef HAS_GETHOSTBYADDR
4539 const int addrtype = POPi;
4540 SV * const addrsv = POPs;
4542 Netdb_host_t addr = (Netdb_host_t) SvPVbyte(addrsv, addrlen);
4544 hent = PerlSock_gethostbyaddr(addr, (Netdb_hlen_t) addrlen, addrtype);
4546 DIE(aTHX_ PL_no_sock_func, "gethostbyaddr");
4550 #ifdef HAS_GETHOSTENT
4551 hent = PerlSock_gethostent();
4553 DIE(aTHX_ PL_no_sock_func, "gethostent");
4556 #ifdef HOST_NOT_FOUND
4558 #ifdef USE_REENTRANT_API
4559 # ifdef USE_GETHOSTENT_ERRNO
4560 h_errno = PL_reentrant_buffer->_gethostent_errno;
4563 STATUS_UNIX_SET(h_errno);
4567 if (GIMME != G_ARRAY) {
4568 PUSHs(sv = sv_newmortal());
4570 if (which == OP_GHBYNAME) {
4572 sv_setpvn(sv, hent->h_addr, hent->h_length);
4575 sv_setpv(sv, (char*)hent->h_name);
4581 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4582 sv_setpv(sv, (char*)hent->h_name);
4583 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4584 for (elem = hent->h_aliases; elem && *elem; elem++) {
4585 sv_catpv(sv, *elem);
4589 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4590 sv_setiv(sv, (IV)hent->h_addrtype);
4591 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4592 len = hent->h_length;
4593 sv_setiv(sv, (IV)len);
4595 for (elem = hent->h_addr_list; elem && *elem; elem++) {
4596 XPUSHs(sv = sv_mortalcopy(&PL_sv_no));
4597 sv_setpvn(sv, *elem, len);
4600 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4602 sv_setpvn(sv, hent->h_addr, len);
4607 DIE(aTHX_ PL_no_sock_func, "gethostent");
4613 #if defined(HAS_GETNETBYNAME) || defined(HAS_GETNETBYADDR) || defined(HAS_GETNETENT)
4615 I32 which = PL_op->op_type;
4616 register char **elem;
4618 #ifndef HAS_GETNET_PROTOS /* XXX Do we need individual probes? */
4619 struct netent *getnetbyaddr(Netdb_net_t, int);
4620 struct netent *getnetbyname(Netdb_name_t);
4621 struct netent *getnetent(void);
4623 struct netent *nent;
4625 if (which == OP_GNBYNAME){
4626 #ifdef HAS_GETNETBYNAME
4627 const char * const name = POPpbytex;
4628 nent = PerlSock_getnetbyname(name);
4630 DIE(aTHX_ PL_no_sock_func, "getnetbyname");
4633 else if (which == OP_GNBYADDR) {
4634 #ifdef HAS_GETNETBYADDR
4635 const int addrtype = POPi;
4636 const Netdb_net_t addr = (Netdb_net_t) (U32)POPu;
4637 nent = PerlSock_getnetbyaddr(addr, addrtype);
4639 DIE(aTHX_ PL_no_sock_func, "getnetbyaddr");
4643 #ifdef HAS_GETNETENT
4644 nent = PerlSock_getnetent();
4646 DIE(aTHX_ PL_no_sock_func, "getnetent");
4649 #ifdef HOST_NOT_FOUND
4651 #ifdef USE_REENTRANT_API
4652 # ifdef USE_GETNETENT_ERRNO
4653 h_errno = PL_reentrant_buffer->_getnetent_errno;
4656 STATUS_UNIX_SET(h_errno);
4661 if (GIMME != G_ARRAY) {
4662 PUSHs(sv = sv_newmortal());
4664 if (which == OP_GNBYNAME)
4665 sv_setiv(sv, (IV)nent->n_net);
4667 sv_setpv(sv, nent->n_name);
4673 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4674 sv_setpv(sv, nent->n_name);
4675 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4676 for (elem = nent->n_aliases; elem && *elem; elem++) {
4677 sv_catpv(sv, *elem);
4681 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4682 sv_setiv(sv, (IV)nent->n_addrtype);
4683 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4684 sv_setiv(sv, (IV)nent->n_net);
4689 DIE(aTHX_ PL_no_sock_func, "getnetent");
4695 #if defined(HAS_GETPROTOBYNAME) || defined(HAS_GETPROTOBYNUMBER) || defined(HAS_GETPROTOENT)
4697 I32 which = PL_op->op_type;
4698 register char **elem;
4700 #ifndef HAS_GETPROTO_PROTOS /* XXX Do we need individual probes? */
4701 struct protoent *getprotobyname(Netdb_name_t);
4702 struct protoent *getprotobynumber(int);
4703 struct protoent *getprotoent(void);
4705 struct protoent *pent;
4707 if (which == OP_GPBYNAME) {
4708 #ifdef HAS_GETPROTOBYNAME
4709 const char* const name = POPpbytex;
4710 pent = PerlSock_getprotobyname(name);
4712 DIE(aTHX_ PL_no_sock_func, "getprotobyname");
4715 else if (which == OP_GPBYNUMBER) {
4716 #ifdef HAS_GETPROTOBYNUMBER
4717 const int number = POPi;
4718 pent = PerlSock_getprotobynumber(number);
4720 DIE(aTHX_ PL_no_sock_func, "getprotobynumber");
4724 #ifdef HAS_GETPROTOENT
4725 pent = PerlSock_getprotoent();
4727 DIE(aTHX_ PL_no_sock_func, "getprotoent");
4731 if (GIMME != G_ARRAY) {
4732 PUSHs(sv = sv_newmortal());
4734 if (which == OP_GPBYNAME)
4735 sv_setiv(sv, (IV)pent->p_proto);
4737 sv_setpv(sv, pent->p_name);
4743 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4744 sv_setpv(sv, pent->p_name);
4745 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4746 for (elem = pent->p_aliases; elem && *elem; elem++) {
4747 sv_catpv(sv, *elem);
4751 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4752 sv_setiv(sv, (IV)pent->p_proto);
4757 DIE(aTHX_ PL_no_sock_func, "getprotoent");
4763 #if defined(HAS_GETSERVBYNAME) || defined(HAS_GETSERVBYPORT) || defined(HAS_GETSERVENT)
4765 I32 which = PL_op->op_type;
4766 register char **elem;
4768 #ifndef HAS_GETSERV_PROTOS /* XXX Do we need individual probes? */
4769 struct servent *getservbyname(Netdb_name_t, Netdb_name_t);
4770 struct servent *getservbyport(int, Netdb_name_t);
4771 struct servent *getservent(void);
4773 struct servent *sent;
4775 if (which == OP_GSBYNAME) {
4776 #ifdef HAS_GETSERVBYNAME
4777 const char * const proto = POPpbytex;
4778 const char * const name = POPpbytex;
4779 sent = PerlSock_getservbyname(name, (proto && !*proto) ? Nullch : proto);
4781 DIE(aTHX_ PL_no_sock_func, "getservbyname");
4784 else if (which == OP_GSBYPORT) {
4785 #ifdef HAS_GETSERVBYPORT
4786 const char * const proto = POPpbytex;
4787 unsigned short port = (unsigned short)POPu;
4789 port = PerlSock_htons(port);
4791 sent = PerlSock_getservbyport(port, (proto && !*proto) ? Nullch : proto);
4793 DIE(aTHX_ PL_no_sock_func, "getservbyport");
4797 #ifdef HAS_GETSERVENT
4798 sent = PerlSock_getservent();
4800 DIE(aTHX_ PL_no_sock_func, "getservent");
4804 if (GIMME != G_ARRAY) {
4805 PUSHs(sv = sv_newmortal());
4807 if (which == OP_GSBYNAME) {
4809 sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
4811 sv_setiv(sv, (IV)(sent->s_port));
4815 sv_setpv(sv, sent->s_name);
4821 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4822 sv_setpv(sv, sent->s_name);
4823 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4824 for (elem = sent->s_aliases; elem && *elem; elem++) {
4825 sv_catpv(sv, *elem);
4829 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4831 sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
4833 sv_setiv(sv, (IV)(sent->s_port));
4835 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4836 sv_setpv(sv, sent->s_proto);
4841 DIE(aTHX_ PL_no_sock_func, "getservent");
4847 #ifdef HAS_SETHOSTENT
4849 PerlSock_sethostent(TOPi);
4852 DIE(aTHX_ PL_no_sock_func, "sethostent");
4858 #ifdef HAS_SETNETENT
4860 PerlSock_setnetent(TOPi);
4863 DIE(aTHX_ PL_no_sock_func, "setnetent");
4869 #ifdef HAS_SETPROTOENT
4871 PerlSock_setprotoent(TOPi);
4874 DIE(aTHX_ PL_no_sock_func, "setprotoent");
4880 #ifdef HAS_SETSERVENT
4882 PerlSock_setservent(TOPi);
4885 DIE(aTHX_ PL_no_sock_func, "setservent");
4891 #ifdef HAS_ENDHOSTENT
4893 PerlSock_endhostent();
4897 DIE(aTHX_ PL_no_sock_func, "endhostent");
4903 #ifdef HAS_ENDNETENT
4905 PerlSock_endnetent();
4909 DIE(aTHX_ PL_no_sock_func, "endnetent");
4915 #ifdef HAS_ENDPROTOENT
4917 PerlSock_endprotoent();
4921 DIE(aTHX_ PL_no_sock_func, "endprotoent");
4927 #ifdef HAS_ENDSERVENT
4929 PerlSock_endservent();
4933 DIE(aTHX_ PL_no_sock_func, "endservent");
4941 I32 which = PL_op->op_type;
4943 struct passwd *pwent = NULL;
4945 * We currently support only the SysV getsp* shadow password interface.
4946 * The interface is declared in <shadow.h> and often one needs to link
4947 * with -lsecurity or some such.
4948 * This interface is used at least by Solaris, HP-UX, IRIX, and Linux.
4951 * AIX getpwnam() is clever enough to return the encrypted password
4952 * only if the caller (euid?) is root.
4954 * There are at least three other shadow password APIs. Many platforms
4955 * seem to contain more than one interface for accessing the shadow
4956 * password databases, possibly for compatibility reasons.
4957 * The getsp*() is by far he simplest one, the other two interfaces
4958 * are much more complicated, but also very similar to each other.
4963 * struct pr_passwd *getprpw*();
4964 * The password is in
4965 * char getprpw*(...).ufld.fd_encrypt[]
4966 * Mention HAS_GETPRPWNAM here so that Configure probes for it.
4971 * struct es_passwd *getespw*();
4972 * The password is in
4973 * char *(getespw*(...).ufld.fd_encrypt)
4974 * Mention HAS_GETESPWNAM here so that Configure probes for it.
4977 * struct userpw *getuserpw();
4978 * The password is in
4979 * char *(getuserpw(...)).spw_upw_passwd
4980 * (but the de facto standard getpwnam() should work okay)
4982 * Mention I_PROT here so that Configure probes for it.
4984 * In HP-UX for getprpw*() the manual page claims that one should include
4985 * <hpsecurity.h> instead of <sys/security.h>, but that is not needed
4986 * if one includes <shadow.h> as that includes <hpsecurity.h>,
4987 * and pp_sys.c already includes <shadow.h> if there is such.
4989 * Note that <sys/security.h> is already probed for, but currently
4990 * it is only included in special cases.
4992 * In Digital UNIX/Tru64 if using the getespw*() (which seems to be
4993 * be preferred interface, even though also the getprpw*() interface
4994 * is available) one needs to link with -lsecurity -ldb -laud -lm.
4995 * One also needs to call set_auth_parameters() in main() before
4996 * doing anything else, whether one is using getespw*() or getprpw*().
4998 * Note that accessing the shadow databases can be magnitudes
4999 * slower than accessing the standard databases.
5004 # if defined(__CYGWIN__) && defined(USE_REENTRANT_API)
5005 /* Cygwin 1.5.3-1 has buggy getpwnam_r() and getpwuid_r():
5006 * the pw_comment is left uninitialized. */
5007 PL_reentrant_buffer->_pwent_struct.pw_comment = NULL;
5013 const char* const name = POPpbytex;
5014 pwent = getpwnam(name);
5020 pwent = getpwuid(uid);
5024 # ifdef HAS_GETPWENT
5026 #ifdef POSIX_BC /* In some cases pw_passwd has invalid addresses */
5027 if (pwent) pwent = getpwnam(pwent->pw_name);
5030 DIE(aTHX_ PL_no_func, "getpwent");
5036 if (GIMME != G_ARRAY) {
5037 PUSHs(sv = sv_newmortal());
5039 if (which == OP_GPWNAM)
5040 # if Uid_t_sign <= 0
5041 sv_setiv(sv, (IV)pwent->pw_uid);
5043 sv_setuv(sv, (UV)pwent->pw_uid);
5046 sv_setpv(sv, pwent->pw_name);
5052 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5053 sv_setpv(sv, pwent->pw_name);
5055 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5057 /* If we have getspnam(), we try to dig up the shadow
5058 * password. If we are underprivileged, the shadow
5059 * interface will set the errno to EACCES or similar,
5060 * and return a null pointer. If this happens, we will
5061 * use the dummy password (usually "*" or "x") from the
5062 * standard password database.
5064 * In theory we could skip the shadow call completely
5065 * if euid != 0 but in practice we cannot know which
5066 * security measures are guarding the shadow databases
5067 * on a random platform.
5069 * Resist the urge to use additional shadow interfaces.
5070 * Divert the urge to writing an extension instead.
5073 /* Some AIX setups falsely(?) detect some getspnam(), which
5074 * has a different API than the Solaris/IRIX one. */
5075 # if defined(HAS_GETSPNAM) && !defined(_AIX)
5077 const int saverrno = errno;
5078 const struct spwd * const spwent = getspnam(pwent->pw_name);
5079 /* Save and restore errno so that
5080 * underprivileged attempts seem
5081 * to have never made the unsccessful
5082 * attempt to retrieve the shadow password. */
5084 if (spwent && spwent->sp_pwdp)
5085 sv_setpv(sv, spwent->sp_pwdp);
5089 if (!SvPOK(sv)) /* Use the standard password, then. */
5090 sv_setpv(sv, pwent->pw_passwd);
5093 # ifndef INCOMPLETE_TAINTS
5094 /* passwd is tainted because user himself can diddle with it.
5095 * admittedly not much and in a very limited way, but nevertheless. */
5099 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5100 # if Uid_t_sign <= 0
5101 sv_setiv(sv, (IV)pwent->pw_uid);
5103 sv_setuv(sv, (UV)pwent->pw_uid);
5106 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5107 # if Uid_t_sign <= 0
5108 sv_setiv(sv, (IV)pwent->pw_gid);
5110 sv_setuv(sv, (UV)pwent->pw_gid);
5112 /* pw_change, pw_quota, and pw_age are mutually exclusive--
5113 * because of the poor interface of the Perl getpw*(),
5114 * not because there's some standard/convention saying so.
5115 * A better interface would have been to return a hash,
5116 * but we are accursed by our history, alas. --jhi. */
5117 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5119 sv_setiv(sv, (IV)pwent->pw_change);
5122 sv_setiv(sv, (IV)pwent->pw_quota);
5125 sv_setpv(sv, pwent->pw_age);
5130 /* pw_class and pw_comment are mutually exclusive--.
5131 * see the above note for pw_change, pw_quota, and pw_age. */
5132 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5134 sv_setpv(sv, pwent->pw_class);
5137 sv_setpv(sv, pwent->pw_comment);
5141 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5143 sv_setpv(sv, pwent->pw_gecos);
5145 # ifndef INCOMPLETE_TAINTS
5146 /* pw_gecos is tainted because user himself can diddle with it. */
5150 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5151 sv_setpv(sv, pwent->pw_dir);
5153 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5154 sv_setpv(sv, pwent->pw_shell);
5155 # ifndef INCOMPLETE_TAINTS
5156 /* pw_shell is tainted because user himself can diddle with it. */
5161 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5162 sv_setiv(sv, (IV)pwent->pw_expire);
5167 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5173 #if defined(HAS_PASSWD) && defined(HAS_SETPWENT)
5178 DIE(aTHX_ PL_no_func, "setpwent");
5184 #if defined(HAS_PASSWD) && defined(HAS_ENDPWENT)
5189 DIE(aTHX_ PL_no_func, "endpwent");
5197 const I32 which = PL_op->op_type;
5198 const struct group *grent;
5200 if (which == OP_GGRNAM) {
5201 const char* const name = POPpbytex;
5202 grent = (const struct group *)getgrnam(name);
5204 else if (which == OP_GGRGID) {
5205 const Gid_t gid = POPi;
5206 grent = (const struct group *)getgrgid(gid);
5210 grent = (struct group *)getgrent();
5212 DIE(aTHX_ PL_no_func, "getgrent");
5216 if (GIMME != G_ARRAY) {
5217 SV * const sv = sv_newmortal();
5221 if (which == OP_GGRNAM)
5222 sv_setiv(sv, (IV)grent->gr_gid);
5224 sv_setpv(sv, grent->gr_name);
5232 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5233 sv_setpv(sv, grent->gr_name);
5235 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5237 sv_setpv(sv, grent->gr_passwd);
5240 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5241 sv_setiv(sv, (IV)grent->gr_gid);
5243 #if !(defined(_CRAYMPP) && defined(USE_REENTRANT_API))
5244 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5245 /* In UNICOS/mk (_CRAYMPP) the multithreading
5246 * versions (getgrnam_r, getgrgid_r)
5247 * seem to return an illegal pointer
5248 * as the group members list, gr_mem.
5249 * getgrent() doesn't even have a _r version
5250 * but the gr_mem is poisonous anyway.
5251 * So yes, you cannot get the list of group
5252 * members if building multithreaded in UNICOS/mk. */
5253 for (elem = grent->gr_mem; elem && *elem; elem++) {
5254 sv_catpv(sv, *elem);
5263 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5269 #if defined(HAS_GROUP) && defined(HAS_SETGRENT)
5274 DIE(aTHX_ PL_no_func, "setgrent");
5280 #if defined(HAS_GROUP) && defined(HAS_ENDGRENT)
5285 DIE(aTHX_ PL_no_func, "endgrent");
5295 if (!(tmps = PerlProc_getlogin()))
5297 PUSHp(tmps, strlen(tmps));
5300 DIE(aTHX_ PL_no_func, "getlogin");
5304 /* Miscellaneous. */
5309 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
5310 register I32 items = SP - MARK;
5311 unsigned long a[20];
5316 while (++MARK <= SP) {
5317 if (SvTAINTED(*MARK)) {
5323 TAINT_PROPER("syscall");
5326 /* This probably won't work on machines where sizeof(long) != sizeof(int)
5327 * or where sizeof(long) != sizeof(char*). But such machines will
5328 * not likely have syscall implemented either, so who cares?
5330 while (++MARK <= SP) {
5331 if (SvNIOK(*MARK) || !i)
5332 a[i++] = SvIV(*MARK);
5333 else if (*MARK == &PL_sv_undef)
5336 a[i++] = (unsigned long)SvPV_force_nolen(*MARK);
5342 DIE(aTHX_ "Too many args to syscall");
5344 DIE(aTHX_ "Too few args to syscall");
5346 retval = syscall(a[0]);
5349 retval = syscall(a[0],a[1]);
5352 retval = syscall(a[0],a[1],a[2]);
5355 retval = syscall(a[0],a[1],a[2],a[3]);
5358 retval = syscall(a[0],a[1],a[2],a[3],a[4]);
5361 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5]);
5364 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6]);
5367 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7]);
5371 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8]);
5374 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9]);
5377 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5381 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5385 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5389 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5390 a[10],a[11],a[12],a[13]);
5392 #endif /* atarist */
5398 DIE(aTHX_ PL_no_func, "syscall");
5402 #ifdef FCNTL_EMULATE_FLOCK
5404 /* XXX Emulate flock() with fcntl().
5405 What's really needed is a good file locking module.
5409 fcntl_emulate_flock(int fd, int operation)
5413 switch (operation & ~LOCK_NB) {
5415 flock.l_type = F_RDLCK;
5418 flock.l_type = F_WRLCK;
5421 flock.l_type = F_UNLCK;
5427 flock.l_whence = SEEK_SET;
5428 flock.l_start = flock.l_len = (Off_t)0;
5430 return fcntl(fd, (operation & LOCK_NB) ? F_SETLK : F_SETLKW, &flock);
5433 #endif /* FCNTL_EMULATE_FLOCK */
5435 #ifdef LOCKF_EMULATE_FLOCK
5437 /* XXX Emulate flock() with lockf(). This is just to increase
5438 portability of scripts. The calls are not completely
5439 interchangeable. What's really needed is a good file
5443 /* The lockf() constants might have been defined in <unistd.h>.
5444 Unfortunately, <unistd.h> causes troubles on some mixed
5445 (BSD/POSIX) systems, such as SunOS 4.1.3.
5447 Further, the lockf() constants aren't POSIX, so they might not be
5448 visible if we're compiling with _POSIX_SOURCE defined. Thus, we'll
5449 just stick in the SVID values and be done with it. Sigh.
5453 # define F_ULOCK 0 /* Unlock a previously locked region */
5456 # define F_LOCK 1 /* Lock a region for exclusive use */
5459 # define F_TLOCK 2 /* Test and lock a region for exclusive use */
5462 # define F_TEST 3 /* Test a region for other processes locks */
5466 lockf_emulate_flock(int fd, int operation)
5469 const int save_errno = errno;
5472 /* flock locks entire file so for lockf we need to do the same */
5473 pos = PerlLIO_lseek(fd, (Off_t)0, SEEK_CUR); /* get pos to restore later */
5474 if (pos > 0) /* is seekable and needs to be repositioned */
5475 if (PerlLIO_lseek(fd, (Off_t)0, SEEK_SET) < 0)
5476 pos = -1; /* seek failed, so don't seek back afterwards */
5479 switch (operation) {
5481 /* LOCK_SH - get a shared lock */
5483 /* LOCK_EX - get an exclusive lock */
5485 i = lockf (fd, F_LOCK, 0);
5488 /* LOCK_SH|LOCK_NB - get a non-blocking shared lock */
5489 case LOCK_SH|LOCK_NB:
5490 /* LOCK_EX|LOCK_NB - get a non-blocking exclusive lock */
5491 case LOCK_EX|LOCK_NB:
5492 i = lockf (fd, F_TLOCK, 0);
5494 if ((errno == EAGAIN) || (errno == EACCES))
5495 errno = EWOULDBLOCK;
5498 /* LOCK_UN - unlock (non-blocking is a no-op) */
5500 case LOCK_UN|LOCK_NB:
5501 i = lockf (fd, F_ULOCK, 0);
5504 /* Default - can't decipher operation */
5511 if (pos > 0) /* need to restore position of the handle */
5512 PerlLIO_lseek(fd, pos, SEEK_SET); /* ignore error here */
5517 #endif /* LOCKF_EMULATE_FLOCK */
5521 * c-indentation-style: bsd
5523 * indent-tabs-mode: t
5526 * ex: set ts=8 sts=4 sw=4 noet: