3 * Copyright (C) 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2003, 2004, 2005, 2006, by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
12 * But only a short way ahead its floor and the walls on either side were
13 * cloven by a great fissure, out of which the red glare came, now leaping
14 * up, now dying down into darkness; and all the while far below there was
15 * a rumour and a trouble as of great engines throbbing and labouring.
18 /* This file contains system pp ("push/pop") functions that
19 * execute the opcodes that make up a perl program. A typical pp function
20 * expects to find its arguments on the stack, and usually pushes its
21 * results onto the stack, hence the 'pp' terminology. Each OP structure
22 * contains a pointer to the relevant pp_foo() function.
24 * By 'system', we mean ops which interact with the OS, such as pp_open().
28 #define PERL_IN_PP_SYS_C
32 /* Shadow password support for solaris - pdo@cs.umd.edu
33 * Not just Solaris: at least HP-UX, IRIX, Linux.
34 * The API is from SysV.
36 * There are at least two more shadow interfaces,
37 * see the comments in pp_gpwent().
41 /* There is a MAXINT coming from <shadow.h> <- <hpsecurity.h> <- <values.h>
42 * and another MAXINT from "perl.h" <- <sys/param.h>. */
49 # include <sys/wait.h>
53 # include <sys/resource.h>
62 # include <sys/select.h>
66 /* XXX Configure test needed.
67 h_errno might not be a simple 'int', especially for multi-threaded
68 applications, see "extern int errno in perl.h". Creating such
69 a test requires taking into account the differences between
70 compiling multithreaded and singlethreaded ($ccflags et al).
71 HOST_NOT_FOUND is typically defined in <netdb.h>.
73 #if defined(HOST_NOT_FOUND) && !defined(h_errno) && !defined(__CYGWIN__)
82 struct passwd *getpwnam (char *);
83 struct passwd *getpwuid (Uid_t);
88 struct passwd *getpwent (void);
89 #elif defined (VMS) && defined (my_getpwent)
90 struct passwd *Perl_my_getpwent (pTHX);
99 struct group *getgrnam (char *);
100 struct group *getgrgid (Gid_t);
104 struct group *getgrent (void);
110 # if defined(_MSC_VER) || defined(__MINGW32__)
111 # include <sys/utime.h>
118 # ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
121 # define my_chsize PerlLIO_chsize
124 # define my_chsize PerlLIO_chsize
126 I32 my_chsize(int fd, Off_t length);
132 #else /* no flock() */
134 /* fcntl.h might not have been included, even if it exists, because
135 the current Configure only sets I_FCNTL if it's needed to pick up
136 the *_OK constants. Make sure it has been included before testing
137 the fcntl() locking constants. */
138 # if defined(HAS_FCNTL) && !defined(I_FCNTL)
142 # if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
143 # define FLOCK fcntl_emulate_flock
144 # define FCNTL_EMULATE_FLOCK
145 # else /* no flock() or fcntl(F_SETLK,...) */
147 # define FLOCK lockf_emulate_flock
148 # define LOCKF_EMULATE_FLOCK
150 # endif /* no flock() or fcntl(F_SETLK,...) */
153 static int FLOCK (int, int);
156 * These are the flock() constants. Since this sytems doesn't have
157 * flock(), the values of the constants are probably not available.
171 # endif /* emulating flock() */
173 #endif /* no flock() */
176 static const char zero_but_true[ZBTLEN + 1] = "0 but true";
178 #if defined(I_SYS_ACCESS) && !defined(R_OK)
179 # include <sys/access.h>
182 #if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
183 # define FD_CLOEXEC 1 /* NeXT needs this */
189 /* Missing protos on LynxOS */
190 void sethostent(int);
191 void endhostent(void);
193 void endnetent(void);
194 void setprotoent(int);
195 void endprotoent(void);
196 void setservent(int);
197 void endservent(void);
200 #undef PERL_EFF_ACCESS /* EFFective uid/gid ACCESS */
202 /* AIX 5.2 and below use mktime for localtime, and defines the edge case
203 * for time 0x7fffffff to be valid only in UTC. AIX 5.3 provides localtime64
204 * available in the 32bit environment, which could warrant Configure
205 * checks in the future.
208 #define LOCALTIME_EDGECASE_BROKEN
211 /* F_OK unused: if stat() cannot find it... */
213 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
214 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
215 # define PERL_EFF_ACCESS(p,f) (access((p), (f) | EFF_ONLY_OK))
218 #if !defined(PERL_EFF_ACCESS) && defined(HAS_EACCESS)
219 # ifdef I_SYS_SECURITY
220 # include <sys/security.h>
224 # define PERL_EFF_ACCESS(p,f) (eaccess((p), (f), ACC_SELF))
227 # define PERL_EFF_ACCESS(p,f) (eaccess((p), (f)))
231 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESSX) && defined(ACC_SELF)
233 # define PERL_EFF_ACCESS(p,f) (accessx((p), (f), ACC_SELF))
237 #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) \
238 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
239 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
242 S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
244 const Uid_t ruid = getuid();
245 const Uid_t euid = geteuid();
246 const Gid_t rgid = getgid();
247 const Gid_t egid = getegid();
251 #if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
252 Perl_croak(aTHX_ "switching effective uid is not implemented");
255 if (setreuid(euid, ruid))
258 if (setresuid(euid, ruid, (Uid_t)-1))
261 Perl_croak(aTHX_ "entering effective uid failed");
264 #if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
265 Perl_croak(aTHX_ "switching effective gid is not implemented");
268 if (setregid(egid, rgid))
271 if (setresgid(egid, rgid, (Gid_t)-1))
274 Perl_croak(aTHX_ "entering effective gid failed");
277 res = access(path, mode);
280 if (setreuid(ruid, euid))
283 if (setresuid(ruid, euid, (Uid_t)-1))
286 Perl_croak(aTHX_ "leaving effective uid failed");
289 if (setregid(rgid, egid))
292 if (setresgid(rgid, egid, (Gid_t)-1))
295 Perl_croak(aTHX_ "leaving effective gid failed");
300 # define PERL_EFF_ACCESS(p,f) (emulate_eaccess((p), (f)))
303 #if !defined(PERL_EFF_ACCESS)
304 /* With it or without it: anyway you get a warning: either that
305 it is unused, or it is declared static and never defined.
308 S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
310 PERL_UNUSED_ARG(path);
311 PERL_UNUSED_ARG(mode);
312 Perl_croak(aTHX_ "switching effective uid is not implemented");
322 const char * const tmps = POPpconstx;
323 const I32 gimme = GIMME_V;
324 const char *mode = "r";
327 if (PL_op->op_private & OPpOPEN_IN_RAW)
329 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
331 fp = PerlProc_popen(tmps, mode);
333 const char * const type = 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)) != NULL)
355 SV * const sv = newSV(79);
356 if (sv_gets(sv, fp, 0) == NULL) {
360 XPUSHs(sv_2mortal(sv));
361 if (SvLEN(sv) - SvCUR(sv) > 20) {
362 SvPV_shrink_to_cur(sv);
367 STATUS_NATIVE_CHILD_SET(PerlProc_pclose(fp));
368 TAINT; /* "I believe that this is not gratuitous!" */
371 STATUS_NATIVE_CHILD_SET(-1);
372 if (gimme == G_SCALAR)
383 tryAMAGICunTARGET(iter, -1);
385 /* Note that we only ever get here if File::Glob fails to load
386 * without at the same time croaking, for some reason, or if
387 * perl was built with PERL_EXTERNAL_GLOB */
394 * The external globbing program may use things we can't control,
395 * so for security reasons we must assume the worst.
398 taint_proper(PL_no_security, "glob");
402 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
403 PL_last_in_gv = (GV*)*PL_stack_sp--;
405 SAVESPTR(PL_rs); /* This is not permanent, either. */
406 PL_rs = sv_2mortal(newSVpvs("\000"));
409 *SvPVX(PL_rs) = '\n';
413 result = do_readline();
421 PL_last_in_gv = cGVOP_gv;
422 return do_readline();
433 do_join(TARG, &PL_sv_no, MARK, SP);
437 else if (SP == MARK) {
444 tmps = SvPV_const(tmpsv, len);
445 if ((!tmps || !len) && PL_errgv) {
446 SV * const error = ERRSV;
447 SvUPGRADE(error, SVt_PV);
448 if (SvPOK(error) && SvCUR(error))
449 sv_catpvs(error, "\t...caught");
451 tmps = SvPV_const(tmpsv, len);
454 tmpsv = sv_2mortal(newSVpvs("Warning: something's wrong"));
456 Perl_warn(aTHX_ "%"SVf, tmpsv);
468 VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
470 if (SP - MARK != 1) {
472 do_join(TARG, &PL_sv_no, MARK, SP);
474 tmps = SvPV_const(tmpsv, len);
480 tmps = SvROK(tmpsv) ? NULL : SvPV_const(tmpsv, len);
483 SV * const error = ERRSV;
484 SvUPGRADE(error, SVt_PV);
485 if (multiarg ? SvROK(error) : SvROK(tmpsv)) {
487 SvSetSV(error,tmpsv);
488 else if (sv_isobject(error)) {
489 HV * const stash = SvSTASH(SvRV(error));
490 GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
492 SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
493 SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
500 call_sv((SV*)GvCV(gv),
501 G_SCALAR|G_EVAL|G_KEEPERR);
502 sv_setsv(error,*PL_stack_sp--);
508 if (SvPOK(error) && SvCUR(error))
509 sv_catpvs(error, "\t...propagated");
512 tmps = SvPV_const(tmpsv, len);
518 tmpsv = sv_2mortal(newSVpvs("Died"));
520 DIE(aTHX_ "%"SVf, 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, NULL, 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) : NULL)) {
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) : NULL)) {
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 ? NULL : sv), how, NULL, 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_2mortal(newSVpvs("AnyDBM_File"));
938 stash = gv_stashsv(sv, FALSE);
939 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
941 require_pv("AnyDBM_File.pm");
943 if (!(gv = gv_fetchmethod(stash, "TIEHASH")))
944 DIE(aTHX_ "No dbm on this machine");
954 PUSHs(sv_2mortal(newSVuv(O_RDWR|O_CREAT)));
956 PUSHs(sv_2mortal(newSVuv(O_RDWR)));
959 call_sv((SV*)GvCV(gv), G_SCALAR);
962 if (!sv_isobject(TOPs)) {
967 PUSHs(sv_2mortal(newSVuv(O_RDONLY)));
970 call_sv((SV*)GvCV(gv), G_SCALAR);
974 if (sv_isobject(TOPs)) {
975 sv_unmagic((SV *) hv, PERL_MAGIC_tied);
976 sv_magic((SV*)hv, TOPs, PERL_MAGIC_tied, NULL, 0);
993 struct timeval timebuf;
994 struct timeval *tbuf = &timebuf;
997 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1002 # if BYTEORDER & 0xf0000
1003 # define ORDERBYTE (0x88888888 - BYTEORDER)
1005 # define ORDERBYTE (0x4444 - BYTEORDER)
1011 for (i = 1; i <= 3; i++) {
1012 SV * const sv = SP[i];
1015 if (SvREADONLY(sv)) {
1017 sv_force_normal_flags(sv, 0);
1018 if (SvREADONLY(sv) && !(SvPOK(sv) && SvCUR(sv) == 0))
1019 DIE(aTHX_ PL_no_modify);
1022 if (ckWARN(WARN_MISC))
1023 Perl_warner(aTHX_ packWARN(WARN_MISC), "Non-string passed as bitmask");
1024 SvPV_force_nolen(sv); /* force string conversion */
1031 /* little endians can use vecs directly */
1032 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1039 masksize = NFDBITS / NBBY;
1041 masksize = sizeof(long); /* documented int, everyone seems to use long */
1043 Zero(&fd_sets[0], 4, char*);
1046 # if SELECT_MIN_BITS == 1
1047 growsize = sizeof(fd_set);
1049 # if defined(__GLIBC__) && defined(__FD_SETSIZE)
1050 # undef SELECT_MIN_BITS
1051 # define SELECT_MIN_BITS __FD_SETSIZE
1053 /* If SELECT_MIN_BITS is greater than one we most probably will want
1054 * to align the sizes with SELECT_MIN_BITS/8 because for example
1055 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
1056 * UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
1057 * on (sets/tests/clears bits) is 32 bits. */
1058 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
1066 timebuf.tv_sec = (long)value;
1067 value -= (NV)timebuf.tv_sec;
1068 timebuf.tv_usec = (long)(value * 1000000.0);
1073 for (i = 1; i <= 3; i++) {
1075 if (!SvOK(sv) || SvCUR(sv) == 0) {
1082 Sv_Grow(sv, growsize);
1086 while (++j <= growsize) {
1090 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1092 Newx(fd_sets[i], growsize, char);
1093 for (offset = 0; offset < growsize; offset += masksize) {
1094 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1095 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1098 fd_sets[i] = SvPVX(sv);
1102 #ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1103 /* Can't make just the (void*) conditional because that would be
1104 * cpp #if within cpp macro, and not all compilers like that. */
1105 nfound = PerlSock_select(
1107 (Select_fd_set_t) fd_sets[1],
1108 (Select_fd_set_t) fd_sets[2],
1109 (Select_fd_set_t) fd_sets[3],
1110 (void*) tbuf); /* Workaround for compiler bug. */
1112 nfound = PerlSock_select(
1114 (Select_fd_set_t) fd_sets[1],
1115 (Select_fd_set_t) fd_sets[2],
1116 (Select_fd_set_t) fd_sets[3],
1119 for (i = 1; i <= 3; i++) {
1122 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1124 for (offset = 0; offset < growsize; offset += masksize) {
1125 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1126 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1128 Safefree(fd_sets[i]);
1135 if (GIMME == G_ARRAY && tbuf) {
1136 value = (NV)(timebuf.tv_sec) +
1137 (NV)(timebuf.tv_usec) / 1000000.0;
1138 PUSHs(sv_2mortal(newSVnv(value)));
1142 DIE(aTHX_ "select not implemented");
1147 Perl_setdefout(pTHX_ GV *gv)
1150 SvREFCNT_inc_simple_void(gv);
1152 SvREFCNT_dec(PL_defoutgv);
1160 GV * const newdefout = (PL_op->op_private > 0) ? ((GV *) POPs) : (GV *) NULL;
1161 GV * egv = GvEGV(PL_defoutgv);
1167 XPUSHs(&PL_sv_undef);
1169 GV * const * const gvp = (GV**)hv_fetch(hv, GvNAME(egv), GvNAMELEN(egv), FALSE);
1170 if (gvp && *gvp == egv) {
1171 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
1175 XPUSHs(sv_2mortal(newRV((SV*)egv)));
1180 if (!GvIO(newdefout))
1181 gv_IOadd(newdefout);
1182 setdefout(newdefout);
1193 GV * const gv = (MAXARG==0) ? PL_stdingv : (GV*)POPs;
1195 if (gv && (io = GvIO(gv))
1196 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1198 const I32 gimme = GIMME_V;
1200 XPUSHs(SvTIED_obj((SV*)io, mg));
1203 call_method("GETC", gimme);
1206 if (gimme == G_SCALAR)
1207 SvSetMagicSV_nosteal(TARG, TOPs);
1210 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
1211 if ((!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
1212 && ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1213 report_evil_fh(gv, io, PL_op->op_type);
1214 SETERRNO(EBADF,RMS_IFI);
1218 sv_setpvn(TARG, " ", 1);
1219 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
1220 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1221 /* Find out how many bytes the char needs */
1222 Size_t len = UTF8SKIP(SvPVX_const(TARG));
1225 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1226 SvCUR_set(TARG,1+len);
1235 S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
1238 register PERL_CONTEXT *cx;
1239 const I32 gimme = GIMME_V;
1244 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
1246 cx->blk_sub.retop = retop;
1248 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), 1);
1250 setdefout(gv); /* locally select filehandle so $% et al work */
1283 SV * const tmpsv = sv_newmortal();
1285 gv_efullname4(tmpsv, fgv, NULL, FALSE);
1286 name = SvPV_nolen_const(tmpsv);
1288 DIE(aTHX_ "Undefined format \"%s\" called", name);
1290 DIE(aTHX_ "Not a format reference");
1293 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
1295 IoFLAGS(io) &= ~IOf_DIDTOP;
1296 return doform(cv,gv,PL_op->op_next);
1302 GV * const gv = cxstack[cxstack_ix].blk_sub.gv;
1303 register IO * const io = GvIOp(gv);
1304 PerlIO * const ofp = IoOFP(io);
1308 register PERL_CONTEXT *cx;
1310 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
1311 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
1314 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1315 PL_formtarget != PL_toptarget)
1319 if (!IoTOP_GV(io)) {
1322 if (!IoTOP_NAME(io)) {
1324 if (!IoFMT_NAME(io))
1325 IoFMT_NAME(io) = savepv(GvNAME(gv));
1326 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%s_TOP", GvNAME(gv)));
1327 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
1328 if ((topgv && GvFORM(topgv)) ||
1329 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
1330 IoTOP_NAME(io) = savesvpv(topname);
1332 IoTOP_NAME(io) = savepvs("top");
1334 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
1335 if (!topgv || !GvFORM(topgv)) {
1336 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1339 IoTOP_GV(io) = topgv;
1341 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1342 I32 lines = IoLINES_LEFT(io);
1343 const char *s = SvPVX_const(PL_formtarget);
1344 if (lines <= 0) /* Yow, header didn't even fit!!! */
1346 while (lines-- > 0) {
1347 s = strchr(s, '\n');
1353 const STRLEN save = SvCUR(PL_formtarget);
1354 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
1355 do_print(PL_formtarget, ofp);
1356 SvCUR_set(PL_formtarget, save);
1357 sv_chop(PL_formtarget, s);
1358 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
1361 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
1362 do_print(PL_formfeed, ofp);
1363 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1365 PL_formtarget = PL_toptarget;
1366 IoFLAGS(io) |= IOf_DIDTOP;
1369 DIE(aTHX_ "bad top format reference");
1372 SV * const sv = sv_newmortal();
1374 gv_efullname4(sv, fgv, NULL, FALSE);
1375 name = SvPV_nolen_const(sv);
1377 DIE(aTHX_ "Undefined top format \"%s\" called",name);
1381 DIE(aTHX_ "Undefined top format called");
1384 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
1385 return doform(cv,gv,PL_op);
1389 POPBLOCK(cx,PL_curpm);
1395 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
1397 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
1398 else if (ckWARN(WARN_CLOSED))
1399 report_evil_fh(gv, io, PL_op->op_type);
1404 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
1405 if (ckWARN(WARN_IO))
1406 Perl_warner(aTHX_ packWARN(WARN_IO), "page overflow");
1408 if (!do_print(PL_formtarget, fp))
1411 FmLINES(PL_formtarget) = 0;
1412 SvCUR_set(PL_formtarget, 0);
1413 *SvEND(PL_formtarget) = '\0';
1414 if (IoFLAGS(io) & IOf_FLUSH)
1415 (void)PerlIO_flush(fp);
1420 PL_formtarget = PL_bodytarget;
1422 PERL_UNUSED_VAR(newsp);
1423 PERL_UNUSED_VAR(gimme);
1424 return cx->blk_sub.retop;
1429 dVAR; dSP; dMARK; dORIGMARK;
1435 GV * const gv = (PL_op->op_flags & OPf_STACKED) ? (GV*)*++MARK : PL_defoutgv;
1437 if (gv && (io = GvIO(gv))
1438 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1440 if (MARK == ORIGMARK) {
1443 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1447 *MARK = SvTIED_obj((SV*)io, mg);
1450 call_method("PRINTF", G_SCALAR);
1453 MARK = ORIGMARK + 1;
1460 if (!(io = GvIO(gv))) {
1461 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1462 report_evil_fh(gv, io, PL_op->op_type);
1463 SETERRNO(EBADF,RMS_IFI);
1466 else if (!(fp = IoOFP(io))) {
1467 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
1469 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
1470 else if (ckWARN(WARN_CLOSED))
1471 report_evil_fh(gv, io, PL_op->op_type);
1473 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
1477 do_sprintf(sv, SP - MARK, MARK + 1);
1478 if (!do_print(sv, fp))
1481 if (IoFLAGS(io) & IOf_FLUSH)
1482 if (PerlIO_flush(fp) == EOF)
1493 PUSHs(&PL_sv_undef);
1501 const int perm = (MAXARG > 3) ? POPi : 0666;
1502 const int mode = POPi;
1503 SV * const sv = POPs;
1504 GV * const gv = (GV *)POPs;
1507 /* Need TIEHANDLE method ? */
1508 const char * const tmps = SvPV_const(sv, len);
1509 /* FIXME? do_open should do const */
1510 if (do_open(gv, tmps, len, TRUE, mode, perm, NULL)) {
1511 IoLINES(GvIOp(gv)) = 0;
1515 PUSHs(&PL_sv_undef);
1522 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
1528 Sock_size_t bufsize;
1536 bool charstart = FALSE;
1537 STRLEN charskip = 0;
1540 GV * const gv = (GV*)*++MARK;
1541 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1542 && gv && (io = GvIO(gv)) )
1544 const MAGIC * mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
1548 *MARK = SvTIED_obj((SV*)io, mg);
1550 call_method("READ", G_SCALAR);
1564 sv_setpvn(bufsv, "", 0);
1565 length = SvIVx(*++MARK);
1568 offset = SvIVx(*++MARK);
1572 if (!io || !IoIFP(io)) {
1573 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1574 report_evil_fh(gv, io, PL_op->op_type);
1575 SETERRNO(EBADF,RMS_IFI);
1578 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
1579 buffer = SvPVutf8_force(bufsv, blen);
1580 /* UTF-8 may not have been set if they are all low bytes */
1585 buffer = SvPV_force(bufsv, blen);
1586 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
1589 DIE(aTHX_ "Negative length");
1597 if (PL_op->op_type == OP_RECV) {
1598 char namebuf[MAXPATHLEN];
1599 #if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
1600 bufsize = sizeof (struct sockaddr_in);
1602 bufsize = sizeof namebuf;
1604 #ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1608 buffer = SvGROW(bufsv, (STRLEN)(length+1));
1609 /* 'offset' means 'flags' here */
1610 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
1611 (struct sockaddr *)namebuf, &bufsize);
1615 /* Bogus return without padding */
1616 bufsize = sizeof (struct sockaddr_in);
1618 SvCUR_set(bufsv, count);
1619 *SvEND(bufsv) = '\0';
1620 (void)SvPOK_only(bufsv);
1624 /* This should not be marked tainted if the fp is marked clean */
1625 if (!(IoFLAGS(io) & IOf_UNTAINT))
1626 SvTAINTED_on(bufsv);
1628 sv_setpvn(TARG, namebuf, bufsize);
1633 if (PL_op->op_type == OP_RECV)
1634 DIE(aTHX_ PL_no_sock_func, "recv");
1636 if (DO_UTF8(bufsv)) {
1637 /* offset adjust in characters not bytes */
1638 blen = sv_len_utf8(bufsv);
1641 if (-offset > (int)blen)
1642 DIE(aTHX_ "Offset outside string");
1645 if (DO_UTF8(bufsv)) {
1646 /* convert offset-as-chars to offset-as-bytes */
1647 if (offset >= (int)blen)
1648 offset += SvCUR(bufsv) - blen;
1650 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
1653 bufsize = SvCUR(bufsv);
1654 /* Allocating length + offset + 1 isn't perfect in the case of reading
1655 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1657 (should be 2 * length + offset + 1, or possibly something longer if
1658 PL_encoding is true) */
1659 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
1660 if (offset > 0 && (Sock_size_t)offset > bufsize) { /* Zero any newly allocated space */
1661 Zero(buffer+bufsize, offset-bufsize, char);
1663 buffer = buffer + offset;
1665 read_target = bufsv;
1667 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1668 concatenate it to the current buffer. */
1670 /* Truncate the existing buffer to the start of where we will be
1672 SvCUR_set(bufsv, offset);
1674 read_target = sv_newmortal();
1675 SvUPGRADE(read_target, SVt_PV);
1676 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1679 if (PL_op->op_type == OP_SYSREAD) {
1680 #ifdef PERL_SOCK_SYSREAD_IS_RECV
1681 if (IoTYPE(io) == IoTYPE_SOCKET) {
1682 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1688 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1693 #ifdef HAS_SOCKET__bad_code_maybe
1694 if (IoTYPE(io) == IoTYPE_SOCKET) {
1695 char namebuf[MAXPATHLEN];
1696 #if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1697 bufsize = sizeof (struct sockaddr_in);
1699 bufsize = sizeof namebuf;
1701 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
1702 (struct sockaddr *)namebuf, &bufsize);
1707 count = PerlIO_read(IoIFP(io), buffer, length);
1708 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1709 if (count == 0 && PerlIO_error(IoIFP(io)))
1713 if ((IoTYPE(io) == IoTYPE_WRONLY) && ckWARN(WARN_IO))
1714 report_evil_fh(gv, io, OP_phoney_OUTPUT_ONLY);
1717 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1718 *SvEND(read_target) = '\0';
1719 (void)SvPOK_only(read_target);
1720 if (fp_utf8 && !IN_BYTES) {
1721 /* Look at utf8 we got back and count the characters */
1722 const char *bend = buffer + count;
1723 while (buffer < bend) {
1725 skip = UTF8SKIP(buffer);
1728 if (buffer - charskip + skip > bend) {
1729 /* partial character - try for rest of it */
1730 length = skip - (bend-buffer);
1731 offset = bend - SvPVX_const(bufsv);
1743 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1744 provided amount read (count) was what was requested (length)
1746 if (got < wanted && count == length) {
1747 length = wanted - got;
1748 offset = bend - SvPVX_const(bufsv);
1751 /* return value is character count */
1755 else if (buffer_utf8) {
1756 /* Let svcatsv upgrade the bytes we read in to utf8.
1757 The buffer is a mortal so will be freed soon. */
1758 sv_catsv_nomg(bufsv, read_target);
1761 /* This should not be marked tainted if the fp is marked clean */
1762 if (!(IoFLAGS(io) & IOf_UNTAINT))
1763 SvTAINTED_on(bufsv);
1775 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
1783 const int op_type = PL_op->op_type;
1785 GV *const gv = (GV*)*++MARK;
1786 if (PL_op->op_type == OP_SYSWRITE
1787 && gv && (io = GvIO(gv))
1788 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1792 if (MARK == SP - 1) {
1794 sv = sv_2mortal(newSViv(sv_len(*SP)));
1800 *(ORIGMARK+1) = SvTIED_obj((SV*)io, mg);
1802 call_method("WRITE", G_SCALAR);
1815 if (op_type == OP_SYSWRITE) {
1817 length = (Size_t) sv_len(bufsv);
1819 #if Size_t_size > IVSIZE
1820 length = (Size_t)SvNVx(*++MARK);
1822 length = (Size_t)SvIVx(*++MARK);
1824 if ((SSize_t)length < 0)
1825 DIE(aTHX_ "Negative length");
1830 if (!io || !IoIFP(io)) {
1832 if (ckWARN(WARN_CLOSED))
1833 report_evil_fh(gv, io, PL_op->op_type);
1834 SETERRNO(EBADF,RMS_IFI);
1838 if (PerlIO_isutf8(IoIFP(io))) {
1839 if (!SvUTF8(bufsv)) {
1840 bufsv = sv_2mortal(newSVsv(bufsv));
1841 buffer = sv_2pvutf8(bufsv, &blen);
1843 buffer = SvPV_const(bufsv, blen);
1846 if (DO_UTF8(bufsv)) {
1847 /* Not modifying source SV, so making a temporary copy. */
1848 bufsv = sv_2mortal(newSVsv(bufsv));
1849 sv_utf8_downgrade(bufsv, FALSE);
1851 buffer = SvPV_const(bufsv, blen);
1854 if (op_type == OP_SYSWRITE) {
1856 if (DO_UTF8(bufsv)) {
1857 /* length and offset are in chars */
1858 blen = sv_len_utf8(bufsv);
1861 offset = SvIVx(*++MARK);
1863 if (-offset > (IV)blen)
1864 DIE(aTHX_ "Offset outside string");
1866 } else if (offset >= (IV)blen && blen > 0)
1867 DIE(aTHX_ "Offset outside string");
1870 if (length > blen - offset)
1871 length = blen - offset;
1872 if (DO_UTF8(bufsv)) {
1873 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
1874 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1877 buffer = buffer+offset;
1879 #ifdef PERL_SOCK_SYSWRITE_IS_SEND
1880 if (IoTYPE(io) == IoTYPE_SOCKET) {
1881 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
1887 /* See the note at doio.c:do_print about filesize limits. --jhi */
1888 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
1894 const int flags = SvIVx(*++MARK);
1897 char * const sockbuf = SvPVx(*++MARK, mlen);
1898 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1899 flags, (struct sockaddr *)sockbuf, mlen);
1903 = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, flags);
1908 DIE(aTHX_ PL_no_sock_func, "send");
1914 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
1915 #if Size_t_size > IVSIZE
1933 if (PL_op->op_flags & OPf_SPECIAL) { /* eof() */
1935 gv = PL_last_in_gv = GvEGV(PL_argvgv);
1937 if (io && !IoIFP(io)) {
1938 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
1940 IoFLAGS(io) &= ~IOf_START;
1941 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, NULL);
1942 sv_setpvn(GvSV(gv), "-", 1);
1943 SvSETMAGIC(GvSV(gv));
1945 else if (!nextargv(gv))
1950 gv = PL_last_in_gv; /* eof */
1953 gv = PL_last_in_gv = (GV*)POPs; /* eof(FH) */
1956 IO * const io = GvIO(gv);
1958 if (io && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) {
1960 XPUSHs(SvTIED_obj((SV*)io, mg));
1963 call_method("EOF", G_SCALAR);
1970 PUSHs(boolSV(!gv || do_eof(gv)));
1982 PL_last_in_gv = (GV*)POPs;
1985 if (gv && (io = GvIO(gv))
1986 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1989 XPUSHs(SvTIED_obj((SV*)io, mg));
1992 call_method("TELL", G_SCALAR);
1998 #if LSEEKSIZE > IVSIZE
1999 PUSHn( do_tell(gv) );
2001 PUSHi( do_tell(gv) );
2010 const int whence = POPi;
2011 #if LSEEKSIZE > IVSIZE
2012 const Off_t offset = (Off_t)SvNVx(POPs);
2014 const Off_t offset = (Off_t)SvIVx(POPs);
2018 GV * const gv = PL_last_in_gv = (GV*)POPs;
2020 if (gv && (io = GvIO(gv))
2021 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
2024 XPUSHs(SvTIED_obj((SV*)io, mg));
2025 #if LSEEKSIZE > IVSIZE
2026 XPUSHs(sv_2mortal(newSVnv((NV) offset)));
2028 XPUSHs(sv_2mortal(newSViv(offset)));
2030 XPUSHs(sv_2mortal(newSViv(whence)));
2033 call_method("SEEK", G_SCALAR);
2039 if (PL_op->op_type == OP_SEEK)
2040 PUSHs(boolSV(do_seek(gv, offset, whence)));
2042 const Off_t sought = do_sysseek(gv, offset, whence);
2044 PUSHs(&PL_sv_undef);
2046 SV* const sv = sought ?
2047 #if LSEEKSIZE > IVSIZE
2052 : newSVpvn(zero_but_true, ZBTLEN);
2053 PUSHs(sv_2mortal(sv));
2063 /* There seems to be no consensus on the length type of truncate()
2064 * and ftruncate(), both off_t and size_t have supporters. In
2065 * general one would think that when using large files, off_t is
2066 * at least as wide as size_t, so using an off_t should be okay. */
2067 /* XXX Configure probe for the length type of *truncate() needed XXX */
2070 #if Off_t_size > IVSIZE
2075 /* Checking for length < 0 is problematic as the type might or
2076 * might not be signed: if it is not, clever compilers will moan. */
2077 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
2084 if (PL_op->op_flags & OPf_SPECIAL) {
2085 tmpgv = gv_fetchsv(POPs, 0, SVt_PVIO);
2094 TAINT_PROPER("truncate");
2095 if (!(fp = IoIFP(io))) {
2101 if (ftruncate(PerlIO_fileno(fp), len) < 0)
2103 if (my_chsize(PerlIO_fileno(fp), len) < 0)
2110 SV * const sv = POPs;
2113 if (SvTYPE(sv) == SVt_PVGV) {
2114 tmpgv = (GV*)sv; /* *main::FRED for example */
2115 goto do_ftruncate_gv;
2117 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2118 tmpgv = (GV*) SvRV(sv); /* \*main::FRED for example */
2119 goto do_ftruncate_gv;
2121 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2122 io = (IO*) SvRV(sv); /* *main::FRED{IO} for example */
2123 goto do_ftruncate_io;
2126 name = SvPV_nolen_const(sv);
2127 TAINT_PROPER("truncate");
2129 if (truncate(name, len) < 0)
2133 const int tmpfd = PerlLIO_open(name, O_RDWR);
2138 if (my_chsize(tmpfd, len) < 0)
2140 PerlLIO_close(tmpfd);
2149 SETERRNO(EBADF,RMS_IFI);
2157 SV * const argsv = POPs;
2158 const unsigned int func = POPu;
2159 const int optype = PL_op->op_type;
2160 GV * const gv = (GV*)POPs;
2161 IO * const io = gv ? GvIOn(gv) : NULL;
2165 if (!io || !argsv || !IoIFP(io)) {
2166 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2167 report_evil_fh(gv, io, PL_op->op_type);
2168 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
2172 if (SvPOK(argsv) || !SvNIOK(argsv)) {
2175 s = SvPV_force(argsv, len);
2176 need = IOCPARM_LEN(func);
2178 s = Sv_Grow(argsv, need + 1);
2179 SvCUR_set(argsv, need);
2182 s[SvCUR(argsv)] = 17; /* a little sanity check here */
2185 retval = SvIV(argsv);
2186 s = INT2PTR(char*,retval); /* ouch */
2189 TAINT_PROPER(PL_op_desc[optype]);
2191 if (optype == OP_IOCTL)
2193 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
2195 DIE(aTHX_ "ioctl is not implemented");
2199 DIE(aTHX_ "fcntl is not implemented");
2201 #if defined(OS2) && defined(__EMX__)
2202 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
2204 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
2208 #if defined(HAS_IOCTL) || defined(HAS_FCNTL)
2210 if (s[SvCUR(argsv)] != 17)
2211 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
2213 s[SvCUR(argsv)] = 0; /* put our null back */
2214 SvSETMAGIC(argsv); /* Assume it has changed */
2223 PUSHp(zero_but_true, ZBTLEN);
2236 const int argtype = POPi;
2237 GV * const gv = (MAXARG == 0) ? PL_last_in_gv : (GV*)POPs;
2239 if (gv && (io = GvIO(gv)))
2245 /* XXX Looks to me like io is always NULL at this point */
2247 (void)PerlIO_flush(fp);
2248 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
2251 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2252 report_evil_fh(gv, io, PL_op->op_type);
2254 SETERRNO(EBADF,RMS_IFI);
2259 DIE(aTHX_ PL_no_func, "flock()");
2269 const int protocol = POPi;
2270 const int type = POPi;
2271 const int domain = POPi;
2272 GV * const gv = (GV*)POPs;
2273 register IO * const io = gv ? GvIOn(gv) : NULL;
2277 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2278 report_evil_fh(gv, io, PL_op->op_type);
2280 do_close(gv, FALSE);
2281 SETERRNO(EBADF,LIB_INVARG);
2286 do_close(gv, FALSE);
2288 TAINT_PROPER("socket");
2289 fd = PerlSock_socket(domain, type, protocol);
2292 IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2293 IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
2294 IoTYPE(io) = IoTYPE_SOCKET;
2295 if (!IoIFP(io) || !IoOFP(io)) {
2296 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2297 if (IoOFP(io)) PerlIO_close(IoOFP(io));
2298 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
2301 #if defined(HAS_FCNTL) && defined(F_SETFD)
2302 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2306 setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
2311 DIE(aTHX_ PL_no_sock_func, "socket");
2317 #if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
2319 const int protocol = POPi;
2320 const int type = POPi;
2321 const int domain = POPi;
2322 GV * const gv2 = (GV*)POPs;
2323 GV * const gv1 = (GV*)POPs;
2324 register IO * const io1 = gv1 ? GvIOn(gv1) : NULL;
2325 register IO * const io2 = gv2 ? GvIOn(gv2) : NULL;
2328 if (!gv1 || !gv2 || !io1 || !io2) {
2329 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
2331 report_evil_fh(gv1, io1, PL_op->op_type);
2333 report_evil_fh(gv1, io2, PL_op->op_type);
2336 do_close(gv1, FALSE);
2338 do_close(gv2, FALSE);
2343 do_close(gv1, FALSE);
2345 do_close(gv2, FALSE);
2347 TAINT_PROPER("socketpair");
2348 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
2350 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2351 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
2352 IoTYPE(io1) = IoTYPE_SOCKET;
2353 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2354 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
2355 IoTYPE(io2) = IoTYPE_SOCKET;
2356 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
2357 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2358 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
2359 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
2360 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2361 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
2362 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
2365 #if defined(HAS_FCNTL) && defined(F_SETFD)
2366 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2367 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2372 DIE(aTHX_ PL_no_sock_func, "socketpair");
2380 SV * const addrsv = POPs;
2381 /* OK, so on what platform does bind modify addr? */
2383 GV * const gv = (GV*)POPs;
2384 register IO * const io = GvIOn(gv);
2388 if (!io || !IoIFP(io))
2391 addr = SvPV_const(addrsv, len);
2392 TAINT_PROPER("bind");
2393 if (PerlSock_bind(PerlIO_fileno(IoIFP(io)),
2394 (struct sockaddr *)addr, len) >= 0)
2404 if (ckWARN(WARN_CLOSED))
2405 report_evil_fh(gv, io, PL_op->op_type);
2406 SETERRNO(EBADF,SS_IVCHAN);
2409 DIE(aTHX_ PL_no_sock_func, "bind");
2417 SV * const addrsv = POPs;
2418 GV * const gv = (GV*)POPs;
2419 register IO * const io = GvIOn(gv);
2423 if (!io || !IoIFP(io))
2426 addr = SvPV_const(addrsv, len);
2427 TAINT_PROPER("connect");
2428 if (PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
2434 if (ckWARN(WARN_CLOSED))
2435 report_evil_fh(gv, io, PL_op->op_type);
2436 SETERRNO(EBADF,SS_IVCHAN);
2439 DIE(aTHX_ PL_no_sock_func, "connect");
2447 const int backlog = POPi;
2448 GV * const gv = (GV*)POPs;
2449 register IO * const io = gv ? GvIOn(gv) : NULL;
2451 if (!gv || !io || !IoIFP(io))
2454 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
2460 if (ckWARN(WARN_CLOSED))
2461 report_evil_fh(gv, io, PL_op->op_type);
2462 SETERRNO(EBADF,SS_IVCHAN);
2465 DIE(aTHX_ PL_no_sock_func, "listen");
2475 char namebuf[MAXPATHLEN];
2476 #if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
2477 Sock_size_t len = sizeof (struct sockaddr_in);
2479 Sock_size_t len = sizeof namebuf;
2481 GV * const ggv = (GV*)POPs;
2482 GV * const ngv = (GV*)POPs;
2491 if (!gstio || !IoIFP(gstio))
2495 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
2499 do_close(ngv, FALSE);
2500 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2501 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
2502 IoTYPE(nstio) = IoTYPE_SOCKET;
2503 if (!IoIFP(nstio) || !IoOFP(nstio)) {
2504 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2505 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
2506 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
2509 #if defined(HAS_FCNTL) && defined(F_SETFD)
2510 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2514 len = sizeof (struct sockaddr_in); /* EPOC somehow truncates info */
2515 setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
2517 #ifdef __SCO_VERSION__
2518 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
2521 PUSHp(namebuf, len);
2525 if (ckWARN(WARN_CLOSED))
2526 report_evil_fh(ggv, ggv ? GvIO(ggv) : 0, PL_op->op_type);
2527 SETERRNO(EBADF,SS_IVCHAN);
2533 DIE(aTHX_ PL_no_sock_func, "accept");
2541 const int how = POPi;
2542 GV * const gv = (GV*)POPs;
2543 register IO * const io = GvIOn(gv);
2545 if (!io || !IoIFP(io))
2548 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
2552 if (ckWARN(WARN_CLOSED))
2553 report_evil_fh(gv, io, PL_op->op_type);
2554 SETERRNO(EBADF,SS_IVCHAN);
2557 DIE(aTHX_ PL_no_sock_func, "shutdown");
2565 const int optype = PL_op->op_type;
2566 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
2567 const unsigned int optname = (unsigned int) POPi;
2568 const unsigned int lvl = (unsigned int) POPi;
2569 GV * const gv = (GV*)POPs;
2570 register IO * const io = GvIOn(gv);
2574 if (!io || !IoIFP(io))
2577 fd = PerlIO_fileno(IoIFP(io));
2581 (void)SvPOK_only(sv);
2585 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
2592 #if defined(__SYMBIAN32__)
2593 # define SETSOCKOPT_OPTION_VALUE_T void *
2595 # define SETSOCKOPT_OPTION_VALUE_T const char *
2597 /* XXX TODO: We need to have a proper type (a Configure probe,
2598 * etc.) for what the C headers think of the third argument of
2599 * setsockopt(), the option_value read-only buffer: is it
2600 * a "char *", or a "void *", const or not. Some compilers
2601 * don't take kindly to e.g. assuming that "char *" implicitly
2602 * promotes to a "void *", or to explicitly promoting/demoting
2603 * consts to non/vice versa. The "const void *" is the SUS
2604 * definition, but that does not fly everywhere for the above
2606 SETSOCKOPT_OPTION_VALUE_T buf;
2610 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2614 aint = (int)SvIV(sv);
2615 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
2618 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
2627 if (ckWARN(WARN_CLOSED))
2628 report_evil_fh(gv, io, optype);
2629 SETERRNO(EBADF,SS_IVCHAN);
2634 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
2642 const int optype = PL_op->op_type;
2643 GV * const gv = (GV*)POPs;
2644 register IO * const io = GvIOn(gv);
2649 if (!io || !IoIFP(io))
2652 sv = sv_2mortal(newSV(257));
2653 (void)SvPOK_only(sv);
2657 fd = PerlIO_fileno(IoIFP(io));
2659 case OP_GETSOCKNAME:
2660 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2663 case OP_GETPEERNAME:
2664 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2666 #if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2668 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";
2669 /* If the call succeeded, make sure we don't have a zeroed port/addr */
2670 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2671 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
2672 sizeof(u_short) + sizeof(struct in_addr))) {
2679 #ifdef BOGUS_GETNAME_RETURN
2680 /* Interactive Unix, getpeername() and getsockname()
2681 does not return valid namelen */
2682 if (len == BOGUS_GETNAME_RETURN)
2683 len = sizeof(struct sockaddr);
2691 if (ckWARN(WARN_CLOSED))
2692 report_evil_fh(gv, io, optype);
2693 SETERRNO(EBADF,SS_IVCHAN);
2698 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
2712 if (PL_op->op_flags & OPf_REF) {
2714 if (PL_op->op_type == OP_LSTAT) {
2715 if (gv != PL_defgv) {
2716 do_fstat_warning_check:
2717 if (ckWARN(WARN_IO))
2718 Perl_warner(aTHX_ packWARN(WARN_IO),
2719 "lstat() on filehandle %s", GvENAME(gv));
2720 } else if (PL_laststype != OP_LSTAT)
2721 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
2725 if (gv != PL_defgv) {
2726 PL_laststype = OP_STAT;
2728 sv_setpvn(PL_statname, "", 0);
2729 PL_laststatval = (GvIO(gv) && IoIFP(GvIOp(gv))
2730 ? PerlLIO_fstat(PerlIO_fileno(IoIFP(GvIOn(gv))), &PL_statcache) : -1);
2732 if (PL_laststatval < 0) {
2733 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2734 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
2739 SV* const sv = POPs;
2740 if (SvTYPE(sv) == SVt_PVGV) {
2744 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2746 if (PL_op->op_type == OP_LSTAT)
2747 goto do_fstat_warning_check;
2750 sv_setpv(PL_statname, SvPV_nolen_const(sv));
2752 PL_laststype = PL_op->op_type;
2753 if (PL_op->op_type == OP_LSTAT)
2754 PL_laststatval = PerlLIO_lstat(SvPV_nolen_const(PL_statname), &PL_statcache);
2756 PL_laststatval = PerlLIO_stat(SvPV_nolen_const(PL_statname), &PL_statcache);
2757 if (PL_laststatval < 0) {
2758 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname), '\n'))
2759 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
2765 if (gimme != G_ARRAY) {
2766 if (gimme != G_VOID)
2767 XPUSHs(boolSV(max));
2773 PUSHs(sv_2mortal(newSViv(PL_statcache.st_dev)));
2774 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ino)));
2775 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_mode)));
2776 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_nlink)));
2777 #if Uid_t_size > IVSIZE
2778 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_uid)));
2780 # if Uid_t_sign <= 0
2781 PUSHs(sv_2mortal(newSViv(PL_statcache.st_uid)));
2783 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_uid)));
2786 #if Gid_t_size > IVSIZE
2787 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_gid)));
2789 # if Gid_t_sign <= 0
2790 PUSHs(sv_2mortal(newSViv(PL_statcache.st_gid)));
2792 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_gid)));
2795 #ifdef USE_STAT_RDEV
2796 PUSHs(sv_2mortal(newSViv(PL_statcache.st_rdev)));
2798 PUSHs(sv_2mortal(newSVpvs("")));
2800 #if Off_t_size > IVSIZE
2801 PUSHs(sv_2mortal(newSVnv((NV)PL_statcache.st_size)));
2803 PUSHs(sv_2mortal(newSViv(PL_statcache.st_size)));
2806 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_atime)));
2807 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_mtime)));
2808 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_ctime)));
2810 PUSHs(sv_2mortal(newSViv(PL_statcache.st_atime)));
2811 PUSHs(sv_2mortal(newSViv(PL_statcache.st_mtime)));
2812 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ctime)));
2814 #ifdef USE_STAT_BLOCKS
2815 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blksize)));
2816 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blocks)));
2818 PUSHs(sv_2mortal(newSVpvs("")));
2819 PUSHs(sv_2mortal(newSVpvs("")));
2825 /* This macro is used by the stacked filetest operators :
2826 * if the previous filetest failed, short-circuit and pass its value.
2827 * Else, discard it from the stack and continue. --rgs
2829 #define STACKED_FTEST_CHECK if (PL_op->op_private & OPpFT_STACKED) { \
2830 if (TOPs == &PL_sv_no || TOPs == &PL_sv_undef) { RETURN; } \
2831 else { (void)POPs; PUTBACK; } \
2838 /* Not const, because things tweak this below. Not bool, because there's
2839 no guarantee that OPp_FT_ACCESS is <= CHAR_MAX */
2840 #if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2841 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
2842 /* Giving some sort of initial value silences compilers. */
2844 int access_mode = R_OK;
2846 int access_mode = 0;
2849 /* access_mode is never used, but leaving use_access in makes the
2850 conditional compiling below much clearer. */
2853 int stat_mode = S_IRUSR;
2855 bool effective = FALSE;
2858 STACKED_FTEST_CHECK;
2860 switch (PL_op->op_type) {
2862 #if !(defined(HAS_ACCESS) && defined(R_OK))
2868 #if defined(HAS_ACCESS) && defined(W_OK)
2873 stat_mode = S_IWUSR;
2877 #if defined(HAS_ACCESS) && defined(X_OK)
2882 stat_mode = S_IXUSR;
2886 #ifdef PERL_EFF_ACCESS
2889 stat_mode = S_IWUSR;
2893 #ifndef PERL_EFF_ACCESS
2901 #ifdef PERL_EFF_ACCESS
2906 stat_mode = S_IXUSR;
2912 #if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2913 const char *const name = POPpx;
2915 # ifdef PERL_EFF_ACCESS
2916 result = PERL_EFF_ACCESS(name, access_mode);
2918 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
2924 result = access(name, access_mode);
2926 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
2941 if (cando(stat_mode, effective, &PL_statcache))
2950 const int op_type = PL_op->op_type;
2952 STACKED_FTEST_CHECK;
2957 if (op_type == OP_FTIS)
2960 /* You can't dTARGET inside OP_FTIS, because you'll get
2961 "panic: pad_sv po" - the op is not flagged to have a target. */
2965 #if Off_t_size > IVSIZE
2966 PUSHn(PL_statcache.st_size);
2968 PUSHi(PL_statcache.st_size);
2972 PUSHn( (((NV)PL_basetime - PL_statcache.st_mtime)) / 86400.0 );
2975 PUSHn( (((NV)PL_basetime - PL_statcache.st_atime)) / 86400.0 );
2978 PUSHn( (((NV)PL_basetime - PL_statcache.st_ctime)) / 86400.0 );
2991 /* I believe that all these three are likely to be defined on most every
2992 system these days. */
2994 if(PL_op->op_type == OP_FTSUID)
2998 if(PL_op->op_type == OP_FTSGID)
3002 if(PL_op->op_type == OP_FTSVTX)
3006 STACKED_FTEST_CHECK;
3011 switch (PL_op->op_type) {
3013 if (PL_statcache.st_uid == PL_uid)
3017 if (PL_statcache.st_uid == PL_euid)
3021 if (PL_statcache.st_size == 0)
3025 if (S_ISSOCK(PL_statcache.st_mode))
3029 if (S_ISCHR(PL_statcache.st_mode))
3033 if (S_ISBLK(PL_statcache.st_mode))
3037 if (S_ISREG(PL_statcache.st_mode))
3041 if (S_ISDIR(PL_statcache.st_mode))
3045 if (S_ISFIFO(PL_statcache.st_mode))
3050 if (PL_statcache.st_mode & S_ISUID)
3056 if (PL_statcache.st_mode & S_ISGID)
3062 if (PL_statcache.st_mode & S_ISVTX)
3073 I32 result = my_lstat();
3077 if (S_ISLNK(PL_statcache.st_mode))
3090 STACKED_FTEST_CHECK;
3092 if (PL_op->op_flags & OPf_REF)
3094 else if (isGV(TOPs))
3096 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3097 gv = (GV*)SvRV(POPs);
3099 gv = gv_fetchsv(tmpsv = POPs, 0, SVt_PVIO);
3101 if (GvIO(gv) && IoIFP(GvIOp(gv)))
3102 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
3103 else if (tmpsv && SvOK(tmpsv)) {
3104 const char *tmps = SvPV_nolen_const(tmpsv);
3112 if (PerlLIO_isatty(fd))
3117 #if defined(atarist) /* this will work with atariST. Configure will
3118 make guesses for other systems. */
3119 # define FILE_base(f) ((f)->_base)
3120 # define FILE_ptr(f) ((f)->_ptr)
3121 # define FILE_cnt(f) ((f)->_cnt)
3122 # define FILE_bufsiz(f) ((f)->_cnt + ((f)->_ptr - (f)->_base))
3133 register STDCHAR *s;
3139 STACKED_FTEST_CHECK;
3141 if (PL_op->op_flags & OPf_REF)
3143 else if (isGV(TOPs))
3145 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3146 gv = (GV*)SvRV(POPs);
3152 if (gv == PL_defgv) {
3154 io = GvIO(PL_statgv);
3157 goto really_filename;
3162 PL_laststatval = -1;
3163 sv_setpvn(PL_statname, "", 0);
3164 io = GvIO(PL_statgv);
3166 if (io && IoIFP(io)) {
3167 if (! PerlIO_has_base(IoIFP(io)))
3168 DIE(aTHX_ "-T and -B not implemented on filehandles");
3169 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3170 if (PL_laststatval < 0)
3172 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
3173 if (PL_op->op_type == OP_FTTEXT)
3178 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
3179 i = PerlIO_getc(IoIFP(io));
3181 (void)PerlIO_ungetc(IoIFP(io),i);
3183 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
3185 len = PerlIO_get_bufsiz(IoIFP(io));
3186 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
3187 /* sfio can have large buffers - limit to 512 */
3192 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
3194 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
3196 SETERRNO(EBADF,RMS_IFI);
3204 PL_laststype = OP_STAT;
3205 sv_setpv(PL_statname, SvPV_nolen_const(sv));
3206 if (!(fp = PerlIO_open(SvPVX_const(PL_statname), "r"))) {
3207 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname),
3209 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
3212 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(fp), &PL_statcache);
3213 if (PL_laststatval < 0) {
3214 (void)PerlIO_close(fp);
3217 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, NULL);
3218 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3219 (void)PerlIO_close(fp);
3221 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
3222 RETPUSHNO; /* special case NFS directories */
3223 RETPUSHYES; /* null file is anything */
3228 /* now scan s to look for textiness */
3229 /* XXX ASCII dependent code */
3231 #if defined(DOSISH) || defined(USEMYBINMODE)
3232 /* ignore trailing ^Z on short files */
3233 if (len && len < sizeof(tbuf) && tbuf[len-1] == 26)
3237 for (i = 0; i < len; i++, s++) {
3238 if (!*s) { /* null never allowed in text */
3243 else if (!(isPRINT(*s) || isSPACE(*s)))
3246 else if (*s & 128) {
3248 if (IN_LOCALE_RUNTIME && isALPHA_LC(*s))
3251 /* utf8 characters don't count as odd */
3252 if (UTF8_IS_START(*s)) {
3253 int ulen = UTF8SKIP(s);
3254 if (ulen < len - i) {
3256 for (j = 1; j < ulen; j++) {
3257 if (!UTF8_IS_CONTINUATION(s[j]))
3260 --ulen; /* loop does extra increment */
3270 *s != '\n' && *s != '\r' && *s != '\b' &&
3271 *s != '\t' && *s != '\f' && *s != 27)
3276 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
3287 const char *tmps = NULL;
3291 SV * const sv = POPs;
3292 if (PL_op->op_flags & OPf_SPECIAL) {
3293 gv = gv_fetchsv(sv, 0, SVt_PVIO);
3295 else if (SvTYPE(sv) == SVt_PVGV) {
3298 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
3302 tmps = SvPVx_nolen_const(sv);
3306 if( !gv && (!tmps || !*tmps) ) {
3307 HV * const table = GvHVn(PL_envgv);
3310 if ( (svp = hv_fetchs(table, "HOME", FALSE))
3311 || (svp = hv_fetchs(table, "LOGDIR", FALSE))
3313 || (svp = hv_fetchs(table, "SYS$LOGIN", FALSE))
3318 deprecate("chdir('') or chdir(undef) as chdir()");
3319 tmps = SvPV_nolen_const(*svp);
3323 TAINT_PROPER("chdir");
3328 TAINT_PROPER("chdir");
3331 IO* const io = GvIO(gv);
3334 PUSHi(fchdir(PerlIO_fileno(IoIFP(io))) >= 0);
3336 else if (IoDIRP(io)) {
3338 PUSHi(fchdir(dirfd(IoDIRP(io))) >= 0);
3340 DIE(aTHX_ PL_no_func, "dirfd");
3344 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
3345 report_evil_fh(gv, io, PL_op->op_type);
3346 SETERRNO(EBADF, RMS_IFI);
3351 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
3352 report_evil_fh(gv, io, PL_op->op_type);
3353 SETERRNO(EBADF,RMS_IFI);
3357 DIE(aTHX_ PL_no_func, "fchdir");
3361 PUSHi( PerlDir_chdir(tmps) >= 0 );
3363 /* Clear the DEFAULT element of ENV so we'll get the new value
3365 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
3372 dVAR; dSP; dMARK; dTARGET;
3373 const I32 value = (I32)apply(PL_op->op_type, MARK, SP);
3384 char * const tmps = POPpx;
3385 TAINT_PROPER("chroot");
3386 PUSHi( chroot(tmps) >= 0 );
3389 DIE(aTHX_ PL_no_func, "chroot");
3397 const char * const tmps2 = POPpconstx;
3398 const char * const tmps = SvPV_nolen_const(TOPs);
3399 TAINT_PROPER("rename");
3401 anum = PerlLIO_rename(tmps, tmps2);
3403 if (!(anum = PerlLIO_stat(tmps, &PL_statbuf))) {
3404 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3407 if (PL_euid || PerlLIO_stat(tmps2, &PL_statbuf) < 0 || !S_ISDIR(PL_statbuf.st_mode))
3408 (void)UNLINK(tmps2);
3409 if (!(anum = link(tmps, tmps2)))
3410 anum = UNLINK(tmps);
3418 #if defined(HAS_LINK) || defined(HAS_SYMLINK)
3422 const int op_type = PL_op->op_type;
3426 if (op_type == OP_LINK)
3427 DIE(aTHX_ PL_no_func, "link");
3429 # ifndef HAS_SYMLINK
3430 if (op_type == OP_SYMLINK)
3431 DIE(aTHX_ PL_no_func, "symlink");
3435 const char * const tmps2 = POPpconstx;
3436 const char * const tmps = SvPV_nolen_const(TOPs);
3437 TAINT_PROPER(PL_op_desc[op_type]);
3439 # if defined(HAS_LINK)
3440 # if defined(HAS_SYMLINK)
3441 /* Both present - need to choose which. */
3442 (op_type == OP_LINK) ?
3443 PerlLIO_link(tmps, tmps2) : symlink(tmps, tmps2);
3445 /* Only have link, so calls to pp_symlink will have DIE()d above. */
3446 PerlLIO_link(tmps, tmps2);
3449 # if defined(HAS_SYMLINK)
3450 /* Only have symlink, so calls to pp_link will have DIE()d above. */
3451 symlink(tmps, tmps2);
3456 SETi( result >= 0 );
3463 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
3474 char buf[MAXPATHLEN];
3477 #ifndef INCOMPLETE_TAINTS
3481 len = readlink(tmps, buf, sizeof(buf) - 1);
3489 RETSETUNDEF; /* just pretend it's a normal file */
3493 #if !defined(HAS_MKDIR) || !defined(HAS_RMDIR)
3495 S_dooneliner(pTHX_ const char *cmd, const char *filename)
3497 char * const save_filename = filename;
3503 Newx(cmdline, strlen(cmd) + (strlen(filename) * 2) + 10, char);
3504 strcpy(cmdline, cmd);
3505 strcat(cmdline, " ");
3506 for (s = cmdline + strlen(cmdline); *filename; ) {
3511 myfp = PerlProc_popen(cmdline, "r");
3515 SV * const tmpsv = sv_newmortal();
3516 /* Need to save/restore 'PL_rs' ?? */
3517 s = sv_gets(tmpsv, myfp, 0);
3518 (void)PerlProc_pclose(myfp);
3522 #ifdef HAS_SYS_ERRLIST
3527 /* you don't see this */
3528 const char * const errmsg =
3529 #ifdef HAS_SYS_ERRLIST
3537 if (instr(s, errmsg)) {
3544 #define EACCES EPERM
3546 if (instr(s, "cannot make"))
3547 SETERRNO(EEXIST,RMS_FEX);
3548 else if (instr(s, "existing file"))
3549 SETERRNO(EEXIST,RMS_FEX);
3550 else if (instr(s, "ile exists"))
3551 SETERRNO(EEXIST,RMS_FEX);
3552 else if (instr(s, "non-exist"))
3553 SETERRNO(ENOENT,RMS_FNF);
3554 else if (instr(s, "does not exist"))
3555 SETERRNO(ENOENT,RMS_FNF);
3556 else if (instr(s, "not empty"))
3557 SETERRNO(EBUSY,SS_DEVOFFLINE);
3558 else if (instr(s, "cannot access"))
3559 SETERRNO(EACCES,RMS_PRV);
3561 SETERRNO(EPERM,RMS_PRV);
3564 else { /* some mkdirs return no failure indication */
3565 anum = (PerlLIO_stat(save_filename, &PL_statbuf) >= 0);
3566 if (PL_op->op_type == OP_RMDIR)
3571 SETERRNO(EACCES,RMS_PRV); /* a guess */
3580 /* This macro removes trailing slashes from a directory name.
3581 * Different operating and file systems take differently to
3582 * trailing slashes. According to POSIX 1003.1 1996 Edition
3583 * any number of trailing slashes should be allowed.
3584 * Thusly we snip them away so that even non-conforming
3585 * systems are happy.
3586 * We should probably do this "filtering" for all
3587 * the functions that expect (potentially) directory names:
3588 * -d, chdir(), chmod(), chown(), chroot(), fcntl()?,
3589 * (mkdir()), opendir(), rename(), rmdir(), stat(). --jhi */
3591 #define TRIMSLASHES(tmps,len,copy) (tmps) = SvPV_const(TOPs, (len)); \
3592 if ((len) > 1 && (tmps)[(len)-1] == '/') { \
3595 } while ((len) > 1 && (tmps)[(len)-1] == '/'); \
3596 (tmps) = savepvn((tmps), (len)); \
3606 const int mode = (MAXARG > 1) ? POPi : 0777;
3608 TRIMSLASHES(tmps,len,copy);
3610 TAINT_PROPER("mkdir");
3612 SETi( PerlDir_mkdir(tmps, mode) >= 0 );
3616 SETi( dooneliner("mkdir", tmps) );
3617 oldumask = PerlLIO_umask(0);
3618 PerlLIO_umask(oldumask);
3619 PerlLIO_chmod(tmps, (mode & ~oldumask) & 0777);
3634 TRIMSLASHES(tmps,len,copy);
3635 TAINT_PROPER("rmdir");
3637 SETi( PerlDir_rmdir(tmps) >= 0 );
3639 SETi( dooneliner("rmdir", tmps) );
3646 /* Directory calls. */
3650 #if defined(Direntry_t) && defined(HAS_READDIR)
3652 const char * const dirname = POPpconstx;
3653 GV * const gv = (GV*)POPs;
3654 register IO * const io = GvIOn(gv);
3660 PerlDir_close(IoDIRP(io));
3661 if (!(IoDIRP(io) = PerlDir_open(dirname)))
3667 SETERRNO(EBADF,RMS_DIR);
3670 DIE(aTHX_ PL_no_dir_func, "opendir");
3676 #if !defined(Direntry_t) || !defined(HAS_READDIR)
3677 DIE(aTHX_ PL_no_dir_func, "readdir");
3679 #if !defined(I_DIRENT) && !defined(VMS)
3680 Direntry_t *readdir (DIR *);
3686 const I32 gimme = GIMME;
3687 GV * const gv = (GV *)POPs;
3688 register const Direntry_t *dp;
3689 register IO * const io = GvIOn(gv);
3691 if (!io || !IoDIRP(io)) {
3692 if(ckWARN(WARN_IO)) {
3693 Perl_warner(aTHX_ packWARN(WARN_IO),
3694 "readdir() attempted on invalid dirhandle %s", GvENAME(gv));
3700 dp = (Direntry_t *)PerlDir_read(IoDIRP(io));
3704 sv = newSVpvn(dp->d_name, dp->d_namlen);
3706 sv = newSVpv(dp->d_name, 0);
3708 #ifndef INCOMPLETE_TAINTS
3709 if (!(IoFLAGS(io) & IOf_UNTAINT))
3712 XPUSHs(sv_2mortal(sv));
3714 while (gimme == G_ARRAY);
3716 if (!dp && gimme != G_ARRAY)
3723 SETERRNO(EBADF,RMS_ISI);
3724 if (GIMME == G_ARRAY)
3733 #if defined(HAS_TELLDIR) || defined(telldir)
3735 /* XXX does _anyone_ need this? --AD 2/20/1998 */
3736 /* XXX netbsd still seemed to.
3737 XXX HAS_TELLDIR_PROTO is new style, NEED_TELLDIR_PROTO is old style.
3738 --JHI 1999-Feb-02 */
3739 # if !defined(HAS_TELLDIR_PROTO) || defined(NEED_TELLDIR_PROTO)
3740 long telldir (DIR *);
3742 GV * const gv = (GV*)POPs;
3743 register IO * const io = GvIOn(gv);
3745 if (!io || !IoDIRP(io)) {
3746 if(ckWARN(WARN_IO)) {
3747 Perl_warner(aTHX_ packWARN(WARN_IO),
3748 "telldir() attempted on invalid dirhandle %s", GvENAME(gv));
3753 PUSHi( PerlDir_tell(IoDIRP(io)) );
3757 SETERRNO(EBADF,RMS_ISI);
3760 DIE(aTHX_ PL_no_dir_func, "telldir");
3766 #if defined(HAS_SEEKDIR) || defined(seekdir)
3768 const long along = POPl;
3769 GV * const gv = (GV*)POPs;
3770 register IO * const io = GvIOn(gv);
3772 if (!io || !IoDIRP(io)) {
3773 if(ckWARN(WARN_IO)) {
3774 Perl_warner(aTHX_ packWARN(WARN_IO),
3775 "seekdir() attempted on invalid dirhandle %s", GvENAME(gv));
3779 (void)PerlDir_seek(IoDIRP(io), along);
3784 SETERRNO(EBADF,RMS_ISI);
3787 DIE(aTHX_ PL_no_dir_func, "seekdir");
3793 #if defined(HAS_REWINDDIR) || defined(rewinddir)
3795 GV * const gv = (GV*)POPs;
3796 register IO * const io = GvIOn(gv);
3798 if (!io || !IoDIRP(io)) {
3799 if(ckWARN(WARN_IO)) {
3800 Perl_warner(aTHX_ packWARN(WARN_IO),
3801 "rewinddir() attempted on invalid dirhandle %s", GvENAME(gv));
3805 (void)PerlDir_rewind(IoDIRP(io));
3809 SETERRNO(EBADF,RMS_ISI);
3812 DIE(aTHX_ PL_no_dir_func, "rewinddir");
3818 #if defined(Direntry_t) && defined(HAS_READDIR)
3820 GV * const gv = (GV*)POPs;
3821 register IO * const io = GvIOn(gv);
3823 if (!io || !IoDIRP(io)) {
3824 if(ckWARN(WARN_IO)) {
3825 Perl_warner(aTHX_ packWARN(WARN_IO),
3826 "closedir() attempted on invalid dirhandle %s", GvENAME(gv));
3830 #ifdef VOID_CLOSEDIR
3831 PerlDir_close(IoDIRP(io));
3833 if (PerlDir_close(IoDIRP(io)) < 0) {
3834 IoDIRP(io) = 0; /* Don't try to close again--coredumps on SysV */
3843 SETERRNO(EBADF,RMS_IFI);
3846 DIE(aTHX_ PL_no_dir_func, "closedir");
3850 /* Process control. */
3859 PERL_FLUSHALL_FOR_CHILD;
3860 childpid = PerlProc_fork();
3864 GV * const tmpgv = gv_fetchpvs("$", GV_ADD|GV_NOTQUAL, SVt_PV);
3866 SvREADONLY_off(GvSV(tmpgv));
3867 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3868 SvREADONLY_on(GvSV(tmpgv));
3870 #ifdef THREADS_HAVE_PIDS
3871 PL_ppid = (IV)getppid();
3873 #ifdef PERL_USES_PL_PIDSTATUS
3874 hv_clear(PL_pidstatus); /* no kids, so don't wait for 'em */
3880 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
3885 PERL_FLUSHALL_FOR_CHILD;
3886 childpid = PerlProc_fork();
3892 DIE(aTHX_ PL_no_func, "fork");
3899 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
3904 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
3905 childpid = wait4pid(-1, &argflags, 0);
3907 while ((childpid = wait4pid(-1, &argflags, 0)) == -1 &&
3912 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
3913 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
3914 STATUS_NATIVE_CHILD_SET((childpid && childpid != -1) ? argflags : -1);
3916 STATUS_NATIVE_CHILD_SET((childpid > 0) ? argflags : -1);
3921 DIE(aTHX_ PL_no_func, "wait");
3927 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
3929 const int optype = POPi;
3930 const Pid_t pid = TOPi;
3934 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
3935 result = wait4pid(pid, &argflags, optype);
3937 while ((result = wait4pid(pid, &argflags, optype)) == -1 &&
3942 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
3943 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
3944 STATUS_NATIVE_CHILD_SET((result && result != -1) ? argflags : -1);
3946 STATUS_NATIVE_CHILD_SET((result > 0) ? argflags : -1);
3951 DIE(aTHX_ PL_no_func, "waitpid");
3957 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
3963 while (++MARK <= SP) {
3964 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
3969 TAINT_PROPER("system");
3971 PERL_FLUSHALL_FOR_CHILD;
3972 #if (defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(OS2) || defined(PERL_MICRO)
3978 if (PerlProc_pipe(pp) >= 0)
3980 while ((childpid = PerlProc_fork()) == -1) {
3981 if (errno != EAGAIN) {
3986 PerlLIO_close(pp[0]);
3987 PerlLIO_close(pp[1]);
3994 Sigsave_t ihand,qhand; /* place to save signals during system() */
3998 PerlLIO_close(pp[1]);
4000 rsignal_save(SIGINT, (Sighandler_t) SIG_IGN, &ihand);
4001 rsignal_save(SIGQUIT, (Sighandler_t) SIG_IGN, &qhand);
4004 result = wait4pid(childpid, &status, 0);
4005 } while (result == -1 && errno == EINTR);
4007 (void)rsignal_restore(SIGINT, &ihand);
4008 (void)rsignal_restore(SIGQUIT, &qhand);
4010 STATUS_NATIVE_CHILD_SET(result == -1 ? -1 : status);
4011 do_execfree(); /* free any memory child malloced on fork */
4017 while (n < sizeof(int)) {
4018 n1 = PerlLIO_read(pp[0],
4019 (void*)(((char*)&errkid)+n),
4025 PerlLIO_close(pp[0]);
4026 if (n) { /* Error */
4027 if (n != sizeof(int))
4028 DIE(aTHX_ "panic: kid popen errno read");
4029 errno = errkid; /* Propagate errno from kid */
4030 STATUS_NATIVE_CHILD_SET(-1);
4033 XPUSHi(STATUS_CURRENT);
4037 PerlLIO_close(pp[0]);
4038 #if defined(HAS_FCNTL) && defined(F_SETFD)
4039 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
4042 if (PL_op->op_flags & OPf_STACKED) {
4043 SV * const really = *++MARK;
4044 value = (I32)do_aexec5(really, MARK, SP, pp[1], did_pipes);
4046 else if (SP - MARK != 1)
4047 value = (I32)do_aexec5(NULL, MARK, SP, pp[1], did_pipes);
4049 value = (I32)do_exec3(SvPVx_nolen(sv_mortalcopy(*SP)), pp[1], did_pipes);
4053 #else /* ! FORK or VMS or OS/2 */
4056 if (PL_op->op_flags & OPf_STACKED) {
4057 SV * const really = *++MARK;
4058 # if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__)
4059 value = (I32)do_aspawn(really, MARK, SP);
4061 value = (I32)do_aspawn(really, (void **)MARK, (void **)SP);
4064 else if (SP - MARK != 1) {
4065 # if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__)
4066 value = (I32)do_aspawn(NULL, MARK, SP);
4068 value = (I32)do_aspawn(NULL, (void **)MARK, (void **)SP);
4072 value = (I32)do_spawn(SvPVx_nolen(sv_mortalcopy(*SP)));
4074 if (PL_statusvalue == -1) /* hint that value must be returned as is */
4076 STATUS_NATIVE_CHILD_SET(value);
4079 XPUSHi(result ? value : STATUS_CURRENT);
4080 #endif /* !FORK or VMS */
4086 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
4091 while (++MARK <= SP) {
4092 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
4097 TAINT_PROPER("exec");
4099 PERL_FLUSHALL_FOR_CHILD;
4100 if (PL_op->op_flags & OPf_STACKED) {
4101 SV * const really = *++MARK;
4102 value = (I32)do_aexec(really, MARK, SP);
4104 else if (SP - MARK != 1)
4106 value = (I32)vms_do_aexec(NULL, MARK, SP);
4110 (void ) do_aspawn(NULL, MARK, SP);
4114 value = (I32)do_aexec(NULL, MARK, SP);
4119 value = (I32)vms_do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
4122 (void) do_spawn(SvPVx_nolen(sv_mortalcopy(*SP)));
4125 value = (I32)do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
4139 # ifdef THREADS_HAVE_PIDS
4140 if (PL_ppid != 1 && getppid() == 1)
4141 /* maybe the parent process has died. Refresh ppid cache */
4145 XPUSHi( getppid() );
4149 DIE(aTHX_ PL_no_func, "getppid");
4158 const Pid_t pid = (MAXARG < 1) ? 0 : SvIVx(POPs);
4161 pgrp = (I32)BSD_GETPGRP(pid);
4163 if (pid != 0 && pid != PerlProc_getpid())
4164 DIE(aTHX_ "POSIX getpgrp can't take an argument");
4170 DIE(aTHX_ PL_no_func, "getpgrp()");
4189 TAINT_PROPER("setpgrp");
4191 SETi( BSD_SETPGRP(pid, pgrp) >= 0 );
4193 if ((pgrp != 0 && pgrp != PerlProc_getpid())
4194 || (pid != 0 && pid != PerlProc_getpid()))
4196 DIE(aTHX_ "setpgrp can't take arguments");
4198 SETi( setpgrp() >= 0 );
4199 #endif /* USE_BSDPGRP */
4202 DIE(aTHX_ PL_no_func, "setpgrp()");
4208 #ifdef HAS_GETPRIORITY
4210 const int who = POPi;
4211 const int which = TOPi;
4212 SETi( getpriority(which, who) );
4215 DIE(aTHX_ PL_no_func, "getpriority()");
4221 #ifdef HAS_SETPRIORITY
4223 const int niceval = POPi;
4224 const int who = POPi;
4225 const int which = TOPi;
4226 TAINT_PROPER("setpriority");
4227 SETi( setpriority(which, who, niceval) >= 0 );
4230 DIE(aTHX_ PL_no_func, "setpriority()");
4240 XPUSHn( time(NULL) );
4242 XPUSHi( time(NULL) );
4254 (void)PerlProc_times(&PL_timesbuf);
4256 (void)PerlProc_times((tbuffer_t *)&PL_timesbuf); /* time.h uses different name for */
4257 /* struct tms, though same data */
4261 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_utime)/(NV)PL_clocktick)));
4262 if (GIMME == G_ARRAY) {
4263 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_stime)/(NV)PL_clocktick)));
4264 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_cutime)/(NV)PL_clocktick)));
4265 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_cstime)/(NV)PL_clocktick)));
4271 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4273 if (GIMME == G_ARRAY) {
4274 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4275 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4276 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4280 DIE(aTHX_ "times not implemented");
4282 #endif /* HAS_TIMES */
4285 #ifdef LOCALTIME_EDGECASE_BROKEN
4286 static struct tm *S_my_localtime (pTHX_ Time_t *tp)
4291 /* No workarounds in the valid range */
4292 if (!tp || *tp < 0x7fff573f || *tp >= 0x80000000)
4293 return (localtime (tp));
4295 /* This edge case is to workaround the undefined behaviour, where the
4296 * TIMEZONE makes the time go beyond the defined range.
4297 * gmtime (0x7fffffff) => 2038-01-19 03:14:07
4298 * If there is a negative offset in TZ, like MET-1METDST, some broken
4299 * implementations of localtime () (like AIX 5.2) barf with bogus
4301 * 0x7fffffff gmtime 2038-01-19 03:14:07
4302 * 0x7fffffff localtime 1901-12-13 21:45:51
4303 * 0x7fffffff mylocaltime 2038-01-19 04:14:07
4304 * 0x3c19137f gmtime 2001-12-13 20:45:51
4305 * 0x3c19137f localtime 2001-12-13 21:45:51
4306 * 0x3c19137f mylocaltime 2001-12-13 21:45:51
4307 * Given that legal timezones are typically between GMT-12 and GMT+12
4308 * we turn back the clock 23 hours before calling the localtime
4309 * function, and add those to the return value. This will never cause
4310 * day wrapping problems, since the edge case is Tue Jan *19*
4312 T = *tp - 82800; /* 23 hour. allows up to GMT-23 */
4315 if (P->tm_hour >= 24) {
4317 P->tm_mday++; /* 18 -> 19 */
4318 P->tm_wday++; /* Mon -> Tue */
4319 P->tm_yday++; /* 18 -> 19 */
4322 } /* S_my_localtime */
4330 const struct tm *tmbuf;
4331 static const char * const dayname[] =
4332 {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
4333 static const char * const monname[] =
4334 {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
4335 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
4341 when = (Time_t)SvNVx(POPs);
4343 when = (Time_t)SvIVx(POPs);
4346 if (PL_op->op_type == OP_LOCALTIME)
4347 #ifdef LOCALTIME_EDGECASE_BROKEN
4348 tmbuf = S_my_localtime(aTHX_ &when);
4350 tmbuf = localtime(&when);
4353 tmbuf = gmtime(&when);
4355 if (GIMME != G_ARRAY) {
4361 tsv = Perl_newSVpvf(aTHX_ "%s %s %2d %02d:%02d:%02d %d",
4362 dayname[tmbuf->tm_wday],
4363 monname[tmbuf->tm_mon],
4368 tmbuf->tm_year + 1900);
4369 PUSHs(sv_2mortal(tsv));
4374 PUSHs(sv_2mortal(newSViv(tmbuf->tm_sec)));
4375 PUSHs(sv_2mortal(newSViv(tmbuf->tm_min)));
4376 PUSHs(sv_2mortal(newSViv(tmbuf->tm_hour)));
4377 PUSHs(sv_2mortal(newSViv(tmbuf->tm_mday)));
4378 PUSHs(sv_2mortal(newSViv(tmbuf->tm_mon)));
4379 PUSHs(sv_2mortal(newSViv(tmbuf->tm_year)));
4380 PUSHs(sv_2mortal(newSViv(tmbuf->tm_wday)));
4381 PUSHs(sv_2mortal(newSViv(tmbuf->tm_yday)));
4382 PUSHs(sv_2mortal(newSViv(tmbuf->tm_isdst)));
4393 anum = alarm((unsigned int)anum);
4400 DIE(aTHX_ PL_no_func, "alarm");
4411 (void)time(&lasttime);
4416 PerlProc_sleep((unsigned int)duration);
4419 XPUSHi(when - lasttime);
4423 /* Shared memory. */
4424 /* Merged with some message passing. */
4428 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4429 dVAR; dSP; dMARK; dTARGET;
4430 const int op_type = PL_op->op_type;
4435 value = (I32)(do_msgsnd(MARK, SP) >= 0);
4438 value = (I32)(do_msgrcv(MARK, SP) >= 0);
4441 value = (I32)(do_semop(MARK, SP) >= 0);
4444 value = (I32)(do_shmio(op_type, MARK, SP) >= 0);
4460 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4461 dVAR; dSP; dMARK; dTARGET;
4462 const int anum = do_ipcget(PL_op->op_type, MARK, SP);
4469 DIE(aTHX_ "System V IPC is not implemented on this machine");
4475 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4476 dVAR; dSP; dMARK; dTARGET;
4477 const int anum = do_ipcctl(PL_op->op_type, MARK, SP);
4485 PUSHp(zero_but_true, ZBTLEN);
4493 /* I can't const this further without getting warnings about the types of
4494 various arrays passed in from structures. */
4496 S_space_join_names_mortal(pTHX_ char *const *array)
4500 if (array && *array) {
4501 target = sv_2mortal(newSVpvs(""));
4503 sv_catpv(target, *array);
4506 sv_catpvs(target, " ");
4509 target = sv_mortalcopy(&PL_sv_no);
4514 /* Get system info. */
4518 #if defined(HAS_GETHOSTBYNAME) || defined(HAS_GETHOSTBYADDR) || defined(HAS_GETHOSTENT)
4520 I32 which = PL_op->op_type;
4521 register char **elem;
4523 #ifndef HAS_GETHOST_PROTOS /* XXX Do we need individual probes? */
4524 struct hostent *gethostbyaddr(Netdb_host_t, Netdb_hlen_t, int);
4525 struct hostent *gethostbyname(Netdb_name_t);
4526 struct hostent *gethostent(void);
4528 struct hostent *hent;
4532 if (which == OP_GHBYNAME) {
4533 #ifdef HAS_GETHOSTBYNAME
4534 const char* const name = POPpbytex;
4535 hent = PerlSock_gethostbyname(name);
4537 DIE(aTHX_ PL_no_sock_func, "gethostbyname");
4540 else if (which == OP_GHBYADDR) {
4541 #ifdef HAS_GETHOSTBYADDR
4542 const int addrtype = POPi;
4543 SV * const addrsv = POPs;
4545 Netdb_host_t addr = (Netdb_host_t) SvPVbyte(addrsv, addrlen);
4547 hent = PerlSock_gethostbyaddr(addr, (Netdb_hlen_t) addrlen, addrtype);
4549 DIE(aTHX_ PL_no_sock_func, "gethostbyaddr");
4553 #ifdef HAS_GETHOSTENT
4554 hent = PerlSock_gethostent();
4556 DIE(aTHX_ PL_no_sock_func, "gethostent");
4559 #ifdef HOST_NOT_FOUND
4561 #ifdef USE_REENTRANT_API
4562 # ifdef USE_GETHOSTENT_ERRNO
4563 h_errno = PL_reentrant_buffer->_gethostent_errno;
4566 STATUS_UNIX_SET(h_errno);
4570 if (GIMME != G_ARRAY) {
4571 PUSHs(sv = sv_newmortal());
4573 if (which == OP_GHBYNAME) {
4575 sv_setpvn(sv, hent->h_addr, hent->h_length);
4578 sv_setpv(sv, (char*)hent->h_name);
4584 PUSHs(sv_2mortal(newSVpv((char*)hent->h_name, 0)));
4585 PUSHs(S_space_join_names_mortal(aTHX_ hent->h_aliases));
4586 PUSHs(sv_2mortal(newSViv((IV)hent->h_addrtype)));
4587 len = hent->h_length;
4588 PUSHs(sv_2mortal(newSViv((IV)len)));
4590 for (elem = hent->h_addr_list; elem && *elem; elem++) {
4591 XPUSHs(sv_2mortal(newSVpvn(*elem, len)));
4595 PUSHs(newSVpvn(hent->h_addr, len));
4597 PUSHs(sv_mortalcopy(&PL_sv_no));
4602 DIE(aTHX_ PL_no_sock_func, "gethostent");
4608 #if defined(HAS_GETNETBYNAME) || defined(HAS_GETNETBYADDR) || defined(HAS_GETNETENT)
4610 I32 which = PL_op->op_type;
4612 #ifndef HAS_GETNET_PROTOS /* XXX Do we need individual probes? */
4613 struct netent *getnetbyaddr(Netdb_net_t, int);
4614 struct netent *getnetbyname(Netdb_name_t);
4615 struct netent *getnetent(void);
4617 struct netent *nent;
4619 if (which == OP_GNBYNAME){
4620 #ifdef HAS_GETNETBYNAME
4621 const char * const name = POPpbytex;
4622 nent = PerlSock_getnetbyname(name);
4624 DIE(aTHX_ PL_no_sock_func, "getnetbyname");
4627 else if (which == OP_GNBYADDR) {
4628 #ifdef HAS_GETNETBYADDR
4629 const int addrtype = POPi;
4630 const Netdb_net_t addr = (Netdb_net_t) (U32)POPu;
4631 nent = PerlSock_getnetbyaddr(addr, addrtype);
4633 DIE(aTHX_ PL_no_sock_func, "getnetbyaddr");
4637 #ifdef HAS_GETNETENT
4638 nent = PerlSock_getnetent();
4640 DIE(aTHX_ PL_no_sock_func, "getnetent");
4643 #ifdef HOST_NOT_FOUND
4645 #ifdef USE_REENTRANT_API
4646 # ifdef USE_GETNETENT_ERRNO
4647 h_errno = PL_reentrant_buffer->_getnetent_errno;
4650 STATUS_UNIX_SET(h_errno);
4655 if (GIMME != G_ARRAY) {
4656 PUSHs(sv = sv_newmortal());
4658 if (which == OP_GNBYNAME)
4659 sv_setiv(sv, (IV)nent->n_net);
4661 sv_setpv(sv, nent->n_name);
4667 PUSHs(sv_2mortal(newSVpv(nent->n_name, 0)));
4668 PUSHs(S_space_join_names_mortal(aTHX_ nent->n_aliases));
4669 PUSHs(sv_2mortal(newSViv((IV)nent->n_addrtype)));
4670 PUSHs(sv_2mortal(newSViv((IV)nent->n_net)));
4675 DIE(aTHX_ PL_no_sock_func, "getnetent");
4681 #if defined(HAS_GETPROTOBYNAME) || defined(HAS_GETPROTOBYNUMBER) || defined(HAS_GETPROTOENT)
4683 I32 which = PL_op->op_type;
4685 #ifndef HAS_GETPROTO_PROTOS /* XXX Do we need individual probes? */
4686 struct protoent *getprotobyname(Netdb_name_t);
4687 struct protoent *getprotobynumber(int);
4688 struct protoent *getprotoent(void);
4690 struct protoent *pent;
4692 if (which == OP_GPBYNAME) {
4693 #ifdef HAS_GETPROTOBYNAME
4694 const char* const name = POPpbytex;
4695 pent = PerlSock_getprotobyname(name);
4697 DIE(aTHX_ PL_no_sock_func, "getprotobyname");
4700 else if (which == OP_GPBYNUMBER) {
4701 #ifdef HAS_GETPROTOBYNUMBER
4702 const int number = POPi;
4703 pent = PerlSock_getprotobynumber(number);
4705 DIE(aTHX_ PL_no_sock_func, "getprotobynumber");
4709 #ifdef HAS_GETPROTOENT
4710 pent = PerlSock_getprotoent();
4712 DIE(aTHX_ PL_no_sock_func, "getprotoent");
4716 if (GIMME != G_ARRAY) {
4717 PUSHs(sv = sv_newmortal());
4719 if (which == OP_GPBYNAME)
4720 sv_setiv(sv, (IV)pent->p_proto);
4722 sv_setpv(sv, pent->p_name);
4728 PUSHs(sv_2mortal(newSVpv(pent->p_name, 0)));
4729 PUSHs(S_space_join_names_mortal(aTHX_ pent->p_aliases));
4730 PUSHs(sv_2mortal(newSViv((IV)pent->p_proto)));
4735 DIE(aTHX_ PL_no_sock_func, "getprotoent");
4741 #if defined(HAS_GETSERVBYNAME) || defined(HAS_GETSERVBYPORT) || defined(HAS_GETSERVENT)
4743 I32 which = PL_op->op_type;
4745 #ifndef HAS_GETSERV_PROTOS /* XXX Do we need individual probes? */
4746 struct servent *getservbyname(Netdb_name_t, Netdb_name_t);
4747 struct servent *getservbyport(int, Netdb_name_t);
4748 struct servent *getservent(void);
4750 struct servent *sent;
4752 if (which == OP_GSBYNAME) {
4753 #ifdef HAS_GETSERVBYNAME
4754 const char * const proto = POPpbytex;
4755 const char * const name = POPpbytex;
4756 sent = PerlSock_getservbyname(name, (proto && !*proto) ? NULL : proto);
4758 DIE(aTHX_ PL_no_sock_func, "getservbyname");
4761 else if (which == OP_GSBYPORT) {
4762 #ifdef HAS_GETSERVBYPORT
4763 const char * const proto = POPpbytex;
4764 unsigned short port = (unsigned short)POPu;
4766 port = PerlSock_htons(port);
4768 sent = PerlSock_getservbyport(port, (proto && !*proto) ? NULL : proto);
4770 DIE(aTHX_ PL_no_sock_func, "getservbyport");
4774 #ifdef HAS_GETSERVENT
4775 sent = PerlSock_getservent();
4777 DIE(aTHX_ PL_no_sock_func, "getservent");
4781 if (GIMME != G_ARRAY) {
4782 PUSHs(sv = sv_newmortal());
4784 if (which == OP_GSBYNAME) {
4786 sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
4788 sv_setiv(sv, (IV)(sent->s_port));
4792 sv_setpv(sv, sent->s_name);
4798 PUSHs(sv_2mortal(newSVpv(sent->s_name, 0)));
4799 PUSHs(S_space_join_names_mortal(aTHX_ sent->s_aliases));
4801 PUSHs(sv_2mortal(newSViv((IV)PerlSock_ntohs(sent->s_port))));
4803 PUSHs(sv_2mortal(newSViv((IV)(sent->s_port))));
4805 PUSHs(sv_2mortal(newSVpv(sent->s_proto, 0)));
4810 DIE(aTHX_ PL_no_sock_func, "getservent");
4816 #ifdef HAS_SETHOSTENT
4818 PerlSock_sethostent(TOPi);
4821 DIE(aTHX_ PL_no_sock_func, "sethostent");
4827 #ifdef HAS_SETNETENT
4829 PerlSock_setnetent(TOPi);
4832 DIE(aTHX_ PL_no_sock_func, "setnetent");
4838 #ifdef HAS_SETPROTOENT
4840 PerlSock_setprotoent(TOPi);
4843 DIE(aTHX_ PL_no_sock_func, "setprotoent");
4849 #ifdef HAS_SETSERVENT
4851 PerlSock_setservent(TOPi);
4854 DIE(aTHX_ PL_no_sock_func, "setservent");
4860 #ifdef HAS_ENDHOSTENT
4862 PerlSock_endhostent();
4866 DIE(aTHX_ PL_no_sock_func, "endhostent");
4872 #ifdef HAS_ENDNETENT
4874 PerlSock_endnetent();
4878 DIE(aTHX_ PL_no_sock_func, "endnetent");
4884 #ifdef HAS_ENDPROTOENT
4886 PerlSock_endprotoent();
4890 DIE(aTHX_ PL_no_sock_func, "endprotoent");
4896 #ifdef HAS_ENDSERVENT
4898 PerlSock_endservent();
4902 DIE(aTHX_ PL_no_sock_func, "endservent");
4910 I32 which = PL_op->op_type;
4912 struct passwd *pwent = NULL;
4914 * We currently support only the SysV getsp* shadow password interface.
4915 * The interface is declared in <shadow.h> and often one needs to link
4916 * with -lsecurity or some such.
4917 * This interface is used at least by Solaris, HP-UX, IRIX, and Linux.
4920 * AIX getpwnam() is clever enough to return the encrypted password
4921 * only if the caller (euid?) is root.
4923 * There are at least three other shadow password APIs. Many platforms
4924 * seem to contain more than one interface for accessing the shadow
4925 * password databases, possibly for compatibility reasons.
4926 * The getsp*() is by far he simplest one, the other two interfaces
4927 * are much more complicated, but also very similar to each other.
4932 * struct pr_passwd *getprpw*();
4933 * The password is in
4934 * char getprpw*(...).ufld.fd_encrypt[]
4935 * Mention HAS_GETPRPWNAM here so that Configure probes for it.
4940 * struct es_passwd *getespw*();
4941 * The password is in
4942 * char *(getespw*(...).ufld.fd_encrypt)
4943 * Mention HAS_GETESPWNAM here so that Configure probes for it.
4946 * struct userpw *getuserpw();
4947 * The password is in
4948 * char *(getuserpw(...)).spw_upw_passwd
4949 * (but the de facto standard getpwnam() should work okay)
4951 * Mention I_PROT here so that Configure probes for it.
4953 * In HP-UX for getprpw*() the manual page claims that one should include
4954 * <hpsecurity.h> instead of <sys/security.h>, but that is not needed
4955 * if one includes <shadow.h> as that includes <hpsecurity.h>,
4956 * and pp_sys.c already includes <shadow.h> if there is such.
4958 * Note that <sys/security.h> is already probed for, but currently
4959 * it is only included in special cases.
4961 * In Digital UNIX/Tru64 if using the getespw*() (which seems to be
4962 * be preferred interface, even though also the getprpw*() interface
4963 * is available) one needs to link with -lsecurity -ldb -laud -lm.
4964 * One also needs to call set_auth_parameters() in main() before
4965 * doing anything else, whether one is using getespw*() or getprpw*().
4967 * Note that accessing the shadow databases can be magnitudes
4968 * slower than accessing the standard databases.
4973 # if defined(__CYGWIN__) && defined(USE_REENTRANT_API)
4974 /* Cygwin 1.5.3-1 has buggy getpwnam_r() and getpwuid_r():
4975 * the pw_comment is left uninitialized. */
4976 PL_reentrant_buffer->_pwent_struct.pw_comment = NULL;
4982 const char* const name = POPpbytex;
4983 pwent = getpwnam(name);
4989 pwent = getpwuid(uid);
4993 # ifdef HAS_GETPWENT
4995 #ifdef POSIX_BC /* In some cases pw_passwd has invalid addresses */
4996 if (pwent) pwent = getpwnam(pwent->pw_name);
4999 DIE(aTHX_ PL_no_func, "getpwent");
5005 if (GIMME != G_ARRAY) {
5006 PUSHs(sv = sv_newmortal());
5008 if (which == OP_GPWNAM)
5009 # if Uid_t_sign <= 0
5010 sv_setiv(sv, (IV)pwent->pw_uid);
5012 sv_setuv(sv, (UV)pwent->pw_uid);
5015 sv_setpv(sv, pwent->pw_name);
5021 PUSHs(sv_2mortal(newSVpv(pwent->pw_name, 0)));
5023 PUSHs(sv = sv_2mortal(newSViv(0)));
5024 /* If we have getspnam(), we try to dig up the shadow
5025 * password. If we are underprivileged, the shadow
5026 * interface will set the errno to EACCES or similar,
5027 * and return a null pointer. If this happens, we will
5028 * use the dummy password (usually "*" or "x") from the
5029 * standard password database.
5031 * In theory we could skip the shadow call completely
5032 * if euid != 0 but in practice we cannot know which
5033 * security measures are guarding the shadow databases
5034 * on a random platform.
5036 * Resist the urge to use additional shadow interfaces.
5037 * Divert the urge to writing an extension instead.
5040 /* Some AIX setups falsely(?) detect some getspnam(), which
5041 * has a different API than the Solaris/IRIX one. */
5042 # if defined(HAS_GETSPNAM) && !defined(_AIX)
5044 const int saverrno = errno;
5045 const struct spwd * const spwent = getspnam(pwent->pw_name);
5046 /* Save and restore errno so that
5047 * underprivileged attempts seem
5048 * to have never made the unsccessful
5049 * attempt to retrieve the shadow password. */
5051 if (spwent && spwent->sp_pwdp)
5052 sv_setpv(sv, spwent->sp_pwdp);
5056 if (!SvPOK(sv)) /* Use the standard password, then. */
5057 sv_setpv(sv, pwent->pw_passwd);
5060 # ifndef INCOMPLETE_TAINTS
5061 /* passwd is tainted because user himself can diddle with it.
5062 * admittedly not much and in a very limited way, but nevertheless. */
5066 # if Uid_t_sign <= 0
5067 PUSHs(sv_2mortal(newSViv((IV)pwent->pw_uid)));
5069 PUSHs(sv_2mortal(newSVuv((UV)pwent->pw_uid)));
5072 # if Uid_t_sign <= 0
5073 PUSHs(sv_2mortal(newSViv((IV)pwent->pw_gid)));
5075 PUSHs(sv_2mortal(newSVuv((UV)pwent->pw_gid)));
5077 /* pw_change, pw_quota, and pw_age are mutually exclusive--
5078 * because of the poor interface of the Perl getpw*(),
5079 * not because there's some standard/convention saying so.
5080 * A better interface would have been to return a hash,
5081 * but we are accursed by our history, alas. --jhi. */
5083 PUSHs(sv_2mortal(newSViv((IV)pwent->pw_change)));
5086 PUSHs(sv_2mortal(newSViv((IV)pwent->pw_quota)));
5089 PUSHs(sv_2mortal(newSVpv(pwent->pw_age, 0)));
5091 /* I think that you can never get this compiled, but just in case. */
5092 PUSHs(sv_mortalcopy(&PL_sv_no));
5097 /* pw_class and pw_comment are mutually exclusive--.
5098 * see the above note for pw_change, pw_quota, and pw_age. */
5100 PUSHs(sv_2mortal(newSVpv(pwent->pw_class, 0)));
5103 PUSHs(sv_2mortal(newSVpv(pwent->pw_comment, 0)));
5105 /* I think that you can never get this compiled, but just in case. */
5106 PUSHs(sv_mortalcopy(&PL_sv_no));
5111 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_gecos, 0)));
5113 PUSHs(sv_mortalcopy(&PL_sv_no));
5115 # ifndef INCOMPLETE_TAINTS
5116 /* pw_gecos is tainted because user himself can diddle with it. */
5120 PUSHs(sv_2mortal(newSVpv(pwent->pw_dir, 0)));
5122 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_shell, 0)));
5123 # ifndef INCOMPLETE_TAINTS
5124 /* pw_shell is tainted because user himself can diddle with it. */
5129 PUSHs(sv_2mortal(newSViv((IV)pwent->pw_expire)));
5134 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5140 #if defined(HAS_PASSWD) && defined(HAS_SETPWENT)
5145 DIE(aTHX_ PL_no_func, "setpwent");
5151 #if defined(HAS_PASSWD) && defined(HAS_ENDPWENT)
5156 DIE(aTHX_ PL_no_func, "endpwent");
5164 const I32 which = PL_op->op_type;
5165 const struct group *grent;
5167 if (which == OP_GGRNAM) {
5168 const char* const name = POPpbytex;
5169 grent = (const struct group *)getgrnam(name);
5171 else if (which == OP_GGRGID) {
5172 const Gid_t gid = POPi;
5173 grent = (const struct group *)getgrgid(gid);
5177 grent = (struct group *)getgrent();
5179 DIE(aTHX_ PL_no_func, "getgrent");
5183 if (GIMME != G_ARRAY) {
5184 SV * const sv = sv_newmortal();
5188 if (which == OP_GGRNAM)
5189 sv_setiv(sv, (IV)grent->gr_gid);
5191 sv_setpv(sv, grent->gr_name);
5197 PUSHs(sv_2mortal(newSVpv(grent->gr_name, 0)));
5200 PUSHs(sv_2mortal(newSVpv(grent->gr_passwd, 0)));
5202 PUSHs(sv_mortalcopy(&PL_sv_no));
5205 PUSHs(sv_2mortal(newSViv((IV)grent->gr_gid)));
5207 #if !(defined(_CRAYMPP) && defined(USE_REENTRANT_API))
5208 /* In UNICOS/mk (_CRAYMPP) the multithreading
5209 * versions (getgrnam_r, getgrgid_r)
5210 * seem to return an illegal pointer
5211 * as the group members list, gr_mem.
5212 * getgrent() doesn't even have a _r version
5213 * but the gr_mem is poisonous anyway.
5214 * So yes, you cannot get the list of group
5215 * members if building multithreaded in UNICOS/mk. */
5216 PUSHs(S_space_join_names_mortal(aTHX_ grent->gr_mem));
5222 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5228 #if defined(HAS_GROUP) && defined(HAS_SETGRENT)
5233 DIE(aTHX_ PL_no_func, "setgrent");
5239 #if defined(HAS_GROUP) && defined(HAS_ENDGRENT)
5244 DIE(aTHX_ PL_no_func, "endgrent");
5254 if (!(tmps = PerlProc_getlogin()))
5256 PUSHp(tmps, strlen(tmps));
5259 DIE(aTHX_ PL_no_func, "getlogin");
5263 /* Miscellaneous. */
5268 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
5269 register I32 items = SP - MARK;
5270 unsigned long a[20];
5275 while (++MARK <= SP) {
5276 if (SvTAINTED(*MARK)) {
5282 TAINT_PROPER("syscall");
5285 /* This probably won't work on machines where sizeof(long) != sizeof(int)
5286 * or where sizeof(long) != sizeof(char*). But such machines will
5287 * not likely have syscall implemented either, so who cares?
5289 while (++MARK <= SP) {
5290 if (SvNIOK(*MARK) || !i)
5291 a[i++] = SvIV(*MARK);
5292 else if (*MARK == &PL_sv_undef)
5295 a[i++] = (unsigned long)SvPV_force_nolen(*MARK);
5301 DIE(aTHX_ "Too many args to syscall");
5303 DIE(aTHX_ "Too few args to syscall");
5305 retval = syscall(a[0]);
5308 retval = syscall(a[0],a[1]);
5311 retval = syscall(a[0],a[1],a[2]);
5314 retval = syscall(a[0],a[1],a[2],a[3]);
5317 retval = syscall(a[0],a[1],a[2],a[3],a[4]);
5320 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5]);
5323 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6]);
5326 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7]);
5330 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8]);
5333 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9]);
5336 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5340 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5344 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5348 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5349 a[10],a[11],a[12],a[13]);
5351 #endif /* atarist */
5357 DIE(aTHX_ PL_no_func, "syscall");
5361 #ifdef FCNTL_EMULATE_FLOCK
5363 /* XXX Emulate flock() with fcntl().
5364 What's really needed is a good file locking module.
5368 fcntl_emulate_flock(int fd, int operation)
5372 switch (operation & ~LOCK_NB) {
5374 flock.l_type = F_RDLCK;
5377 flock.l_type = F_WRLCK;
5380 flock.l_type = F_UNLCK;
5386 flock.l_whence = SEEK_SET;
5387 flock.l_start = flock.l_len = (Off_t)0;
5389 return fcntl(fd, (operation & LOCK_NB) ? F_SETLK : F_SETLKW, &flock);
5392 #endif /* FCNTL_EMULATE_FLOCK */
5394 #ifdef LOCKF_EMULATE_FLOCK
5396 /* XXX Emulate flock() with lockf(). This is just to increase
5397 portability of scripts. The calls are not completely
5398 interchangeable. What's really needed is a good file
5402 /* The lockf() constants might have been defined in <unistd.h>.
5403 Unfortunately, <unistd.h> causes troubles on some mixed
5404 (BSD/POSIX) systems, such as SunOS 4.1.3.
5406 Further, the lockf() constants aren't POSIX, so they might not be
5407 visible if we're compiling with _POSIX_SOURCE defined. Thus, we'll
5408 just stick in the SVID values and be done with it. Sigh.
5412 # define F_ULOCK 0 /* Unlock a previously locked region */
5415 # define F_LOCK 1 /* Lock a region for exclusive use */
5418 # define F_TLOCK 2 /* Test and lock a region for exclusive use */
5421 # define F_TEST 3 /* Test a region for other processes locks */
5425 lockf_emulate_flock(int fd, int operation)
5428 const int save_errno = errno;
5431 /* flock locks entire file so for lockf we need to do the same */
5432 pos = PerlLIO_lseek(fd, (Off_t)0, SEEK_CUR); /* get pos to restore later */
5433 if (pos > 0) /* is seekable and needs to be repositioned */
5434 if (PerlLIO_lseek(fd, (Off_t)0, SEEK_SET) < 0)
5435 pos = -1; /* seek failed, so don't seek back afterwards */
5438 switch (operation) {
5440 /* LOCK_SH - get a shared lock */
5442 /* LOCK_EX - get an exclusive lock */
5444 i = lockf (fd, F_LOCK, 0);
5447 /* LOCK_SH|LOCK_NB - get a non-blocking shared lock */
5448 case LOCK_SH|LOCK_NB:
5449 /* LOCK_EX|LOCK_NB - get a non-blocking exclusive lock */
5450 case LOCK_EX|LOCK_NB:
5451 i = lockf (fd, F_TLOCK, 0);
5453 if ((errno == EAGAIN) || (errno == EACCES))
5454 errno = EWOULDBLOCK;
5457 /* LOCK_UN - unlock (non-blocking is a no-op) */
5459 case LOCK_UN|LOCK_NB:
5460 i = lockf (fd, F_ULOCK, 0);
5463 /* Default - can't decipher operation */
5470 if (pos > 0) /* need to restore position of the handle */
5471 PerlLIO_lseek(fd, pos, SEEK_SET); /* ignore error here */
5476 #endif /* LOCKF_EMULATE_FLOCK */
5480 * c-indentation-style: bsd
5482 * indent-tabs-mode: t
5485 * ex: set ts=8 sts=4 sw=4 noet: