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select() sometimes returns invalid string
[perl5.git] / pp_sys.c
CommitLineData
a0d0e21e
LW
1/* pp_sys.c
2 *
fdf8c088 3 * Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
1129b882 4 * 2004, 2005, 2006, 2007, 2008 by Larry Wall and others
a0d0e21e
LW
5 *
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.
8 *
9 */
10
11/*
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.
4ac71550
TC
16 *
17 * [p.945 of _The Lord of the Rings_, VI/iii: "Mount Doom"]
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LW
18 */
19
166f8a29
DM
20/* This file contains system pp ("push/pop") functions that
21 * execute the opcodes that make up a perl program. A typical pp function
22 * expects to find its arguments on the stack, and usually pushes its
23 * results onto the stack, hence the 'pp' terminology. Each OP structure
24 * contains a pointer to the relevant pp_foo() function.
25 *
26 * By 'system', we mean ops which interact with the OS, such as pp_open().
27 */
28
a0d0e21e 29#include "EXTERN.h"
864dbfa3 30#define PERL_IN_PP_SYS_C
a0d0e21e 31#include "perl.h"
d95a2ea5
CB
32#include "time64.h"
33#include "time64.c"
a0d0e21e 34
f1066039
JH
35#ifdef I_SHADOW
36/* Shadow password support for solaris - pdo@cs.umd.edu
37 * Not just Solaris: at least HP-UX, IRIX, Linux.
3813c136
JH
38 * The API is from SysV.
39 *
40 * There are at least two more shadow interfaces,
41 * see the comments in pp_gpwent().
42 *
43 * --jhi */
44# ifdef __hpux__
c529f79d 45/* There is a MAXINT coming from <shadow.h> <- <hpsecurity.h> <- <values.h>
301e8125 46 * and another MAXINT from "perl.h" <- <sys/param.h>. */
3813c136
JH
47# undef MAXINT
48# endif
49# include <shadow.h>
8c0bfa08
PB
50#endif
51
76c32331
PP
52#ifdef I_SYS_RESOURCE
53# include <sys/resource.h>
16d20bd9 54#endif
a0d0e21e 55
2986a63f
JH
56#ifdef NETWARE
57NETDB_DEFINE_CONTEXT
58#endif
59
a0d0e21e 60#ifdef HAS_SELECT
1e743fda
JH
61# ifdef I_SYS_SELECT
62# include <sys/select.h>
63# endif
a0d0e21e 64#endif
a0d0e21e 65
dc45a647
MB
66/* XXX Configure test needed.
67 h_errno might not be a simple 'int', especially for multi-threaded
5ff3f7a4
GS
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>.
dc45a647 72*/
cb50131a 73#if defined(HOST_NOT_FOUND) && !defined(h_errno) && !defined(__CYGWIN__)
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LW
74extern int h_errno;
75#endif
76
77#ifdef HAS_PASSWD
78# ifdef I_PWD
79# include <pwd.h>
80# else
fd8cd3a3 81# if !defined(VMS)
20ce7b12
GS
82 struct passwd *getpwnam (char *);
83 struct passwd *getpwuid (Uid_t);
fd8cd3a3 84# endif
a0d0e21e 85# endif
28e8609d 86# ifdef HAS_GETPWENT
10bc17b6 87#ifndef getpwent
20ce7b12 88 struct passwd *getpwent (void);
c2a8f790 89#elif defined (VMS) && defined (my_getpwent)
9fa802f3 90 struct passwd *Perl_my_getpwent (pTHX);
10bc17b6 91#endif
28e8609d 92# endif
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LW
93#endif
94
95#ifdef HAS_GROUP
96# ifdef I_GRP
97# include <grp.h>
98# else
20ce7b12
GS
99 struct group *getgrnam (char *);
100 struct group *getgrgid (Gid_t);
a0d0e21e 101# endif
28e8609d 102# ifdef HAS_GETGRENT
10bc17b6 103#ifndef getgrent
20ce7b12 104 struct group *getgrent (void);
10bc17b6 105#endif
28e8609d 106# endif
a0d0e21e
LW
107#endif
108
109#ifdef I_UTIME
3730b96e 110# if defined(_MSC_VER) || defined(__MINGW32__)
3fe9a6f1
PP
111# include <sys/utime.h>
112# else
113# include <utime.h>
114# endif
a0d0e21e 115#endif
a0d0e21e 116
cbdc8872 117#ifdef HAS_CHSIZE
cd52b7b2
PP
118# ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
119# undef my_chsize
120# endif
72cc7e2a 121# define my_chsize PerlLIO_chsize
27da23d5
JH
122#else
123# ifdef HAS_TRUNCATE
124# define my_chsize PerlLIO_chsize
125# else
126I32 my_chsize(int fd, Off_t length);
127# endif
cbdc8872
PP
128#endif
129
ff68c719
PP
130#ifdef HAS_FLOCK
131# define FLOCK flock
132#else /* no flock() */
133
36477c24
PP
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)
139# include <fcntl.h>
140# endif
141
9d9004a9 142# if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
ff68c719
PP
143# define FLOCK fcntl_emulate_flock
144# define FCNTL_EMULATE_FLOCK
145# else /* no flock() or fcntl(F_SETLK,...) */
146# ifdef HAS_LOCKF
147# define FLOCK lockf_emulate_flock
148# define LOCKF_EMULATE_FLOCK
149# endif /* lockf */
150# endif /* no flock() or fcntl(F_SETLK,...) */
151
152# ifdef FLOCK
20ce7b12 153 static int FLOCK (int, int);
ff68c719
PP
154
155 /*
156 * These are the flock() constants. Since this sytems doesn't have
157 * flock(), the values of the constants are probably not available.
158 */
159# ifndef LOCK_SH
160# define LOCK_SH 1
161# endif
162# ifndef LOCK_EX
163# define LOCK_EX 2
164# endif
165# ifndef LOCK_NB
166# define LOCK_NB 4
167# endif
168# ifndef LOCK_UN
169# define LOCK_UN 8
170# endif
171# endif /* emulating flock() */
172
173#endif /* no flock() */
55497cff 174
85ab1d1d 175#define ZBTLEN 10
27da23d5 176static const char zero_but_true[ZBTLEN + 1] = "0 but true";
85ab1d1d 177
5ff3f7a4
GS
178#if defined(I_SYS_ACCESS) && !defined(R_OK)
179# include <sys/access.h>
180#endif
181
c529f79d
CB
182#if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
183# define FD_CLOEXEC 1 /* NeXT needs this */
184#endif
185
a4af207c
JH
186#include "reentr.h"
187
9cffb111
OS
188#ifdef __Lynx__
189/* Missing protos on LynxOS */
190void sethostent(int);
191void endhostent(void);
192void setnetent(int);
193void endnetent(void);
194void setprotoent(int);
195void endprotoent(void);
196void setservent(int);
197void endservent(void);
198#endif
199
faee0e31 200#undef PERL_EFF_ACCESS /* EFFective uid/gid ACCESS */
5ff3f7a4
GS
201
202/* F_OK unused: if stat() cannot find it... */
203
d7558cad 204#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
c955f117 205 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
d7558cad 206# define PERL_EFF_ACCESS(p,f) (access((p), (f) | EFF_ONLY_OK))
5ff3f7a4
GS
207#endif
208
d7558cad 209#if !defined(PERL_EFF_ACCESS) && defined(HAS_EACCESS)
3813c136 210# ifdef I_SYS_SECURITY
5ff3f7a4
GS
211# include <sys/security.h>
212# endif
c955f117
JH
213# ifdef ACC_SELF
214 /* HP SecureWare */
d7558cad 215# define PERL_EFF_ACCESS(p,f) (eaccess((p), (f), ACC_SELF))
c955f117
JH
216# else
217 /* SCO */
d7558cad 218# define PERL_EFF_ACCESS(p,f) (eaccess((p), (f)))
c955f117 219# endif
5ff3f7a4
GS
220#endif
221
d7558cad 222#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESSX) && defined(ACC_SELF)
c955f117 223 /* AIX */
d7558cad 224# define PERL_EFF_ACCESS(p,f) (accessx((p), (f), ACC_SELF))
5ff3f7a4
GS
225#endif
226
d7558cad
NC
227
228#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) \
327c3667
GS
229 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
230 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
5ff3f7a4 231/* The Hard Way. */
327c3667 232STATIC int
7f4774ae 233S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
ba106d47 234{
c4420975
AL
235 const Uid_t ruid = getuid();
236 const Uid_t euid = geteuid();
237 const Gid_t rgid = getgid();
238 const Gid_t egid = getegid();
5ff3f7a4
GS
239 int res;
240
5ff3f7a4 241#if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
cea2e8a9 242 Perl_croak(aTHX_ "switching effective uid is not implemented");
5ff3f7a4
GS
243#else
244#ifdef HAS_SETREUID
245 if (setreuid(euid, ruid))
246#else
247#ifdef HAS_SETRESUID
248 if (setresuid(euid, ruid, (Uid_t)-1))
249#endif
250#endif
cea2e8a9 251 Perl_croak(aTHX_ "entering effective uid failed");
5ff3f7a4
GS
252#endif
253
254#if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
cea2e8a9 255 Perl_croak(aTHX_ "switching effective gid is not implemented");
5ff3f7a4
GS
256#else
257#ifdef HAS_SETREGID
258 if (setregid(egid, rgid))
259#else
260#ifdef HAS_SETRESGID
261 if (setresgid(egid, rgid, (Gid_t)-1))
262#endif
263#endif
cea2e8a9 264 Perl_croak(aTHX_ "entering effective gid failed");
5ff3f7a4
GS
265#endif
266
267 res = access(path, mode);
268
269#ifdef HAS_SETREUID
270 if (setreuid(ruid, euid))
271#else
272#ifdef HAS_SETRESUID
273 if (setresuid(ruid, euid, (Uid_t)-1))
274#endif
275#endif
cea2e8a9 276 Perl_croak(aTHX_ "leaving effective uid failed");
5ff3f7a4
GS
277
278#ifdef HAS_SETREGID
279 if (setregid(rgid, egid))
280#else
281#ifdef HAS_SETRESGID
282 if (setresgid(rgid, egid, (Gid_t)-1))
283#endif
284#endif
cea2e8a9 285 Perl_croak(aTHX_ "leaving effective gid failed");
5ff3f7a4
GS
286
287 return res;
288}
d6864606 289# define PERL_EFF_ACCESS(p,f) (S_emulate_eaccess(aTHX_ (p), (f)))
5ff3f7a4
GS
290#endif
291
a0d0e21e
LW
292PP(pp_backtick)
293{
97aff369 294 dVAR; dSP; dTARGET;
760ac839 295 PerlIO *fp;
1b6737cc 296 const char * const tmps = POPpconstx;
f54cb97a 297 const I32 gimme = GIMME_V;
e1ec3a88 298 const char *mode = "r";
54310121 299
a0d0e21e 300 TAINT_PROPER("``");
16fe6d59
GS
301 if (PL_op->op_private & OPpOPEN_IN_RAW)
302 mode = "rb";
303 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
304 mode = "rt";
2fbb330f 305 fp = PerlProc_popen(tmps, mode);
a0d0e21e 306 if (fp) {
11bcd5da 307 const char * const type = Perl_PerlIO_context_layers(aTHX_ NULL);
ac27b0f5
NIS
308 if (type && *type)
309 PerlIO_apply_layers(aTHX_ fp,mode,type);
310
54310121 311 if (gimme == G_VOID) {
96827780
MB
312 char tmpbuf[256];
313 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
a79db61d 314 NOOP;
54310121
PP
315 }
316 else if (gimme == G_SCALAR) {
d343c3ef 317 ENTER_with_name("backtick");
75af1a9c 318 SAVESPTR(PL_rs);
fa326138 319 PL_rs = &PL_sv_undef;
76f68e9b 320 sv_setpvs(TARG, ""); /* note that this preserves previous buffer */
bd61b366 321 while (sv_gets(TARG, fp, SvCUR(TARG)) != NULL)
a79db61d 322 NOOP;
d343c3ef 323 LEAVE_with_name("backtick");
a0d0e21e 324 XPUSHs(TARG);
aa689395 325 SvTAINTED_on(TARG);
a0d0e21e
LW
326 }
327 else {
a0d0e21e 328 for (;;) {
561b68a9 329 SV * const sv = newSV(79);
bd61b366 330 if (sv_gets(sv, fp, 0) == NULL) {
a0d0e21e
LW
331 SvREFCNT_dec(sv);
332 break;
333 }
6e449a3a 334 mXPUSHs(sv);
a0d0e21e 335 if (SvLEN(sv) - SvCUR(sv) > 20) {
1da4ca5f 336 SvPV_shrink_to_cur(sv);
a0d0e21e 337 }
aa689395 338 SvTAINTED_on(sv);
a0d0e21e
LW
339 }
340 }
2fbb330f 341 STATUS_NATIVE_CHILD_SET(PerlProc_pclose(fp));
aa689395 342 TAINT; /* "I believe that this is not gratuitous!" */
a0d0e21e
LW
343 }
344 else {
37038d91 345 STATUS_NATIVE_CHILD_SET(-1);
54310121 346 if (gimme == G_SCALAR)
a0d0e21e
LW
347 RETPUSHUNDEF;
348 }
349
350 RETURN;
351}
352
353PP(pp_glob)
354{
27da23d5 355 dVAR;
a0d0e21e 356 OP *result;
9426e1a5 357 dSP;
151cea25
FC
358 /* make a copy of the pattern if it is gmagical, to ensure that magic
359 * is called once and only once */
360 if (SvGMAGICAL(TOPm1s)) TOPm1s = sv_2mortal(newSVsv(TOPm1s));
9426e1a5
DM
361
362 tryAMAGICunTARGET(iter_amg, -1, (PL_op->op_flags & OPf_SPECIAL));
d1bea3d8
DM
363
364 if (PL_op->op_flags & OPf_SPECIAL) {
365 /* call Perl-level glob function instead. Stack args are:
366 * MARK, wildcard, csh_glob context index
367 * and following OPs should be: gv(CORE::GLOBAL::glob), entersub
368 * */
369 return NORMAL;
370 }
371 /* stack args are: wildcard, gv(_GEN_n) */
372
d67594ff
FC
373 if (PL_globhook) {
374 SETs(GvSV(TOPs));
375 PL_globhook(aTHX);
376 return NORMAL;
377 }
f5284f61 378
71686f12
GS
379 /* Note that we only ever get here if File::Glob fails to load
380 * without at the same time croaking, for some reason, or if
381 * perl was built with PERL_EXTERNAL_GLOB */
382
d343c3ef 383 ENTER_with_name("glob");
a0d0e21e 384
c90c0ff4 385#ifndef VMS
3280af22 386 if (PL_tainting) {
7bac28a0
PP
387 /*
388 * The external globbing program may use things we can't control,
389 * so for security reasons we must assume the worst.
390 */
391 TAINT;
22c35a8c 392 taint_proper(PL_no_security, "glob");
7bac28a0 393 }
c90c0ff4 394#endif /* !VMS */
7bac28a0 395
3280af22 396 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
159b6efe 397 PL_last_in_gv = MUTABLE_GV(*PL_stack_sp--);
a0d0e21e 398
3280af22 399 SAVESPTR(PL_rs); /* This is not permanent, either. */
84bafc02 400 PL_rs = newSVpvs_flags("\000", SVs_TEMP);
c07a80fd
PP
401#ifndef DOSISH
402#ifndef CSH
6b88bc9c 403 *SvPVX(PL_rs) = '\n';
a0d0e21e 404#endif /* !CSH */
55497cff 405#endif /* !DOSISH */
c07a80fd 406
a0d0e21e 407 result = do_readline();
d343c3ef 408 LEAVE_with_name("glob");
a0d0e21e
LW
409 return result;
410}
411
a0d0e21e
LW
412PP(pp_rcatline)
413{
97aff369 414 dVAR;
146174a9 415 PL_last_in_gv = cGVOP_gv;
a0d0e21e
LW
416 return do_readline();
417}
418
419PP(pp_warn)
420{
97aff369 421 dVAR; dSP; dMARK;
c5df3096 422 SV *exsv;
06bf62c7 423 STRLEN len;
b59aed67 424 if (SP - MARK > 1) {
a0d0e21e 425 dTARGET;
3280af22 426 do_join(TARG, &PL_sv_no, MARK, SP);
c5df3096 427 exsv = TARG;
a0d0e21e
LW
428 SP = MARK + 1;
429 }
b59aed67 430 else if (SP == MARK) {
c5df3096 431 exsv = &PL_sv_no;
b59aed67 432 EXTEND(SP, 1);
83f957ec 433 SP = MARK + 1;
b59aed67 434 }
a0d0e21e 435 else {
c5df3096 436 exsv = TOPs;
a0d0e21e 437 }
06bf62c7 438
72d74926 439 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
c5df3096
Z
440 /* well-formed exception supplied */
441 }
442 else if (SvROK(ERRSV)) {
443 exsv = ERRSV;
444 }
445 else if (SvPOK(ERRSV) && SvCUR(ERRSV)) {
446 exsv = sv_mortalcopy(ERRSV);
447 sv_catpvs(exsv, "\t...caught");
448 }
449 else {
450 exsv = newSVpvs_flags("Warning: something's wrong", SVs_TEMP);
451 }
3b7f69a5
FC
452 if (SvROK(exsv) && !PL_warnhook)
453 Perl_warn(aTHX_ "%"SVf, SVfARG(exsv));
454 else warn_sv(exsv);
a0d0e21e
LW
455 RETSETYES;
456}
457
458PP(pp_die)
459{
97aff369 460 dVAR; dSP; dMARK;
c5df3096 461 SV *exsv;
06bf62c7 462 STRLEN len;
96e176bf
CL
463#ifdef VMS
464 VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
465#endif
a0d0e21e
LW
466 if (SP - MARK != 1) {
467 dTARGET;
3280af22 468 do_join(TARG, &PL_sv_no, MARK, SP);
c5df3096 469 exsv = TARG;
a0d0e21e
LW
470 SP = MARK + 1;
471 }
472 else {
c5df3096 473 exsv = TOPs;
a0d0e21e 474 }
c5df3096 475
72d74926 476 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
c5df3096
Z
477 /* well-formed exception supplied */
478 }
479 else if (SvROK(ERRSV)) {
480 exsv = ERRSV;
481 if (sv_isobject(exsv)) {
482 HV * const stash = SvSTASH(SvRV(exsv));
483 GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
484 if (gv) {
485 SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
486 SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
487 EXTEND(SP, 3);
488 PUSHMARK(SP);
489 PUSHs(exsv);
490 PUSHs(file);
491 PUSHs(line);
492 PUTBACK;
493 call_sv(MUTABLE_SV(GvCV(gv)),
494 G_SCALAR|G_EVAL|G_KEEPERR);
495 exsv = sv_mortalcopy(*PL_stack_sp--);
05423cc9 496 }
4e6ea2c3 497 }
a0d0e21e 498 }
c5df3096
Z
499 else if (SvPOK(ERRSV) && SvCUR(ERRSV)) {
500 exsv = sv_mortalcopy(ERRSV);
501 sv_catpvs(exsv, "\t...propagated");
502 }
503 else {
504 exsv = newSVpvs_flags("Died", SVs_TEMP);
505 }
9fed9930 506 return die_sv(exsv);
a0d0e21e
LW
507}
508
509/* I/O. */
510
d682515d
NC
511OP *
512Perl_tied_method(pTHX_ const char *const methname, SV **sp, SV *const sv,
513 const MAGIC *const mg, const U32 flags, U32 argc, ...)
6bcca55b 514{
d8ef3a16
DM
515 SV **orig_sp = sp;
516 I32 ret_args;
517
d682515d 518 PERL_ARGS_ASSERT_TIED_METHOD;
6bcca55b
NC
519
520 /* Ensure that our flag bits do not overlap. */
d682515d
NC
521 assert((TIED_METHOD_MORTALIZE_NOT_NEEDED & G_WANT) == 0);
522 assert((TIED_METHOD_ARGUMENTS_ON_STACK & G_WANT) == 0);
94bc412f 523 assert((TIED_METHOD_SAY & G_WANT) == 0);
6bcca55b 524
d8ef3a16
DM
525 PUTBACK; /* sp is at *foot* of args, so this pops args from old stack */
526 PUSHSTACKi(PERLSI_MAGIC);
527 EXTEND(SP, argc+1); /* object + args */
6bcca55b 528 PUSHMARK(sp);
d682515d 529 PUSHs(SvTIED_obj(sv, mg));
d8ef3a16
DM
530 if (flags & TIED_METHOD_ARGUMENTS_ON_STACK) {
531 Copy(orig_sp + 2, sp + 1, argc, SV*); /* copy args to new stack */
1a8c1d59 532 sp += argc;
d8ef3a16 533 }
1a8c1d59 534 else if (argc) {
d682515d
NC
535 const U32 mortalize_not_needed
536 = flags & TIED_METHOD_MORTALIZE_NOT_NEEDED;
6bcca55b 537 va_list args;
0d5509eb 538 va_start(args, argc);
6bcca55b
NC
539 do {
540 SV *const arg = va_arg(args, SV *);
541 if(mortalize_not_needed)
542 PUSHs(arg);
543 else
544 mPUSHs(arg);
545 } while (--argc);
546 va_end(args);
547 }
548
549 PUTBACK;
d682515d 550 ENTER_with_name("call_tied_method");
94bc412f
NC
551 if (flags & TIED_METHOD_SAY) {
552 /* local $\ = "\n" */
553 SAVEGENERICSV(PL_ors_sv);
554 PL_ors_sv = newSVpvs("\n");
555 }
d8ef3a16
DM
556 ret_args = call_method(methname, flags & G_WANT);
557 SPAGAIN;
558 orig_sp = sp;
559 POPSTACK;
560 SPAGAIN;
561 if (ret_args) { /* copy results back to original stack */
562 EXTEND(sp, ret_args);
563 Copy(orig_sp - ret_args + 1, sp + 1, ret_args, SV*);
564 sp += ret_args;
565 PUTBACK;
566 }
d682515d 567 LEAVE_with_name("call_tied_method");
6bcca55b
NC
568 return NORMAL;
569}
570
d682515d
NC
571#define tied_method0(a,b,c,d) \
572 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,0)
573#define tied_method1(a,b,c,d,e) \
574 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,1,e)
575#define tied_method2(a,b,c,d,e,f) \
576 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,2,e,f)
6bcca55b 577
a0d0e21e
LW
578PP(pp_open)
579{
27da23d5 580 dVAR; dSP;
a567e93b
NIS
581 dMARK; dORIGMARK;
582 dTARGET;
a0d0e21e 583 SV *sv;
5b468f54 584 IO *io;
5c144d81 585 const char *tmps;
a0d0e21e 586 STRLEN len;
a567e93b 587 bool ok;
a0d0e21e 588
159b6efe 589 GV * const gv = MUTABLE_GV(*++MARK);
c4420975 590
13be902c 591 if (!isGV(gv) && !(SvTYPE(gv) == SVt_PVLV && isGV_with_GP(gv)))
cea2e8a9 592 DIE(aTHX_ PL_no_usym, "filehandle");
abc718f2 593
a79db61d 594 if ((io = GvIOp(gv))) {
a5e1d062 595 const MAGIC *mg;
36477c24 596 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
853846ea 597
a2a5de95 598 if (IoDIRP(io))
d1d15184 599 Perl_ck_warner_d(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
d0c0e7dd
FC
600 "Opening dirhandle %"HEKf" also as a file",
601 HEKfARG(GvENAME_HEK(gv)));
abc718f2 602
ad64d0ec 603 mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
c4420975
AL
604 if (mg) {
605 /* Method's args are same as ours ... */
606 /* ... except handle is replaced by the object */
d682515d
NC
607 return Perl_tied_method(aTHX_ "OPEN", mark - 1, MUTABLE_SV(io), mg,
608 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
609 sp - mark);
c4420975 610 }
4592e6ca
NIS
611 }
612
a567e93b
NIS
613 if (MARK < SP) {
614 sv = *++MARK;
615 }
616 else {
35a08ec7 617 sv = GvSVn(gv);
a567e93b
NIS
618 }
619
5c144d81 620 tmps = SvPV_const(sv, len);
4608196e 621 ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, NULL, MARK+1, (SP-MARK));
a567e93b
NIS
622 SP = ORIGMARK;
623 if (ok)
3280af22
NIS
624 PUSHi( (I32)PL_forkprocess );
625 else if (PL_forkprocess == 0) /* we are a new child */
a0d0e21e
LW
626 PUSHi(0);
627 else
628 RETPUSHUNDEF;
629 RETURN;
630}
631
632PP(pp_close)
633{
27da23d5 634 dVAR; dSP;
30901a8a
FC
635 GV * const gv =
636 MAXARG == 0 || (!TOPs && !POPs) ? PL_defoutgv : MUTABLE_GV(POPs);
1d603a67 637
2addaaf3
NC
638 if (MAXARG == 0)
639 EXTEND(SP, 1);
640
a79db61d
AL
641 if (gv) {
642 IO * const io = GvIO(gv);
643 if (io) {
a5e1d062 644 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 645 if (mg) {
d682515d 646 return tied_method0("CLOSE", SP, MUTABLE_SV(io), mg);
a79db61d
AL
647 }
648 }
1d603a67 649 }
54310121 650 PUSHs(boolSV(do_close(gv, TRUE)));
a0d0e21e
LW
651 RETURN;
652}
653
654PP(pp_pipe_op)
655{
a0d0e21e 656#ifdef HAS_PIPE
97aff369 657 dVAR;
9cad6237 658 dSP;
a0d0e21e
LW
659 register IO *rstio;
660 register IO *wstio;
661 int fd[2];
662
159b6efe
NC
663 GV * const wgv = MUTABLE_GV(POPs);
664 GV * const rgv = MUTABLE_GV(POPs);
a0d0e21e
LW
665
666 if (!rgv || !wgv)
667 goto badexit;
668
6e592b3a 669 if (!isGV_with_GP(rgv) || !isGV_with_GP(wgv))
cea2e8a9 670 DIE(aTHX_ PL_no_usym, "filehandle");
a0d0e21e
LW
671 rstio = GvIOn(rgv);
672 wstio = GvIOn(wgv);
673
674 if (IoIFP(rstio))
675 do_close(rgv, FALSE);
676 if (IoIFP(wstio))
677 do_close(wgv, FALSE);
678
6ad3d225 679 if (PerlProc_pipe(fd) < 0)
a0d0e21e
LW
680 goto badexit;
681
460c8493
IZ
682 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
683 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
b5ac89c3 684 IoOFP(rstio) = IoIFP(rstio);
a0d0e21e 685 IoIFP(wstio) = IoOFP(wstio);
50952442
JH
686 IoTYPE(rstio) = IoTYPE_RDONLY;
687 IoTYPE(wstio) = IoTYPE_WRONLY;
a0d0e21e
LW
688
689 if (!IoIFP(rstio) || !IoOFP(wstio)) {
a79db61d
AL
690 if (IoIFP(rstio))
691 PerlIO_close(IoIFP(rstio));
692 else
693 PerlLIO_close(fd[0]);
694 if (IoOFP(wstio))
695 PerlIO_close(IoOFP(wstio));
696 else
697 PerlLIO_close(fd[1]);
a0d0e21e
LW
698 goto badexit;
699 }
4771b018
GS
700#if defined(HAS_FCNTL) && defined(F_SETFD)
701 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
702 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
703#endif
a0d0e21e
LW
704 RETPUSHYES;
705
706badexit:
707 RETPUSHUNDEF;
708#else
cea2e8a9 709 DIE(aTHX_ PL_no_func, "pipe");
a0d0e21e
LW
710#endif
711}
712
713PP(pp_fileno)
714{
27da23d5 715 dVAR; dSP; dTARGET;
a0d0e21e
LW
716 GV *gv;
717 IO *io;
760ac839 718 PerlIO *fp;
a5e1d062 719 const MAGIC *mg;
4592e6ca 720
a0d0e21e
LW
721 if (MAXARG < 1)
722 RETPUSHUNDEF;
159b6efe 723 gv = MUTABLE_GV(POPs);
9c9f25b8 724 io = GvIO(gv);
4592e6ca 725
9c9f25b8 726 if (io
ad64d0ec 727 && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar)))
5b468f54 728 {
d682515d 729 return tied_method0("FILENO", SP, MUTABLE_SV(io), mg);
4592e6ca
NIS
730 }
731
9c9f25b8 732 if (!io || !(fp = IoIFP(io))) {
c289d2f7
JH
733 /* Can't do this because people seem to do things like
734 defined(fileno($foo)) to check whether $foo is a valid fh.
51087808
NC
735
736 report_evil_fh(gv);
c289d2f7 737 */
a0d0e21e 738 RETPUSHUNDEF;
c289d2f7
JH
739 }
740
760ac839 741 PUSHi(PerlIO_fileno(fp));
a0d0e21e
LW
742 RETURN;
743}
744
745PP(pp_umask)
746{
97aff369 747 dVAR;
27da23d5 748 dSP;
d7e492a4 749#ifdef HAS_UMASK
27da23d5 750 dTARGET;
761237fe 751 Mode_t anum;
a0d0e21e 752
58536d15 753 if (MAXARG < 1 || (!TOPs && !POPs)) {
b0b546b3
GA
754 anum = PerlLIO_umask(022);
755 /* setting it to 022 between the two calls to umask avoids
756 * to have a window where the umask is set to 0 -- meaning
757 * that another thread could create world-writeable files. */
758 if (anum != 022)
759 (void)PerlLIO_umask(anum);
a0d0e21e
LW
760 }
761 else
6ad3d225 762 anum = PerlLIO_umask(POPi);
a0d0e21e
LW
763 TAINT_PROPER("umask");
764 XPUSHi(anum);
765#else
a0288114 766 /* Only DIE if trying to restrict permissions on "user" (self).
eec2d3df
GS
767 * Otherwise it's harmless and more useful to just return undef
768 * since 'group' and 'other' concepts probably don't exist here. */
58536d15 769 if (MAXARG >= 1 && (TOPs||POPs) && (POPi & 0700))
cea2e8a9 770 DIE(aTHX_ "umask not implemented");
6b88bc9c 771 XPUSHs(&PL_sv_undef);
a0d0e21e
LW
772#endif
773 RETURN;
774}
775
776PP(pp_binmode)
777{
27da23d5 778 dVAR; dSP;
a0d0e21e
LW
779 GV *gv;
780 IO *io;
760ac839 781 PerlIO *fp;
a0714e2c 782 SV *discp = NULL;
a0d0e21e
LW
783
784 if (MAXARG < 1)
785 RETPUSHUNDEF;
60382766 786 if (MAXARG > 1) {
16fe6d59 787 discp = POPs;
60382766 788 }
a0d0e21e 789
159b6efe 790 gv = MUTABLE_GV(POPs);
9c9f25b8 791 io = GvIO(gv);
4592e6ca 792
9c9f25b8 793 if (io) {
a5e1d062 794 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 795 if (mg) {
bc0c81ca
NC
796 /* This takes advantage of the implementation of the varargs
797 function, which I don't think that the optimiser will be able to
798 figure out. Although, as it's a static function, in theory it
799 could. */
d682515d
NC
800 return Perl_tied_method(aTHX_ "BINMODE", SP, MUTABLE_SV(io), mg,
801 G_SCALAR|TIED_METHOD_MORTALIZE_NOT_NEEDED,
802 discp ? 1 : 0, discp);
a79db61d 803 }
4592e6ca 804 }
a0d0e21e 805
9c9f25b8 806 if (!io || !(fp = IoIFP(io))) {
51087808 807 report_evil_fh(gv);
b5fe5ca2 808 SETERRNO(EBADF,RMS_IFI);
50f846a7
SC
809 RETPUSHUNDEF;
810 }
a0d0e21e 811
40d98b49 812 PUTBACK;
f0a78170 813 {
a79b25b7
VP
814 STRLEN len = 0;
815 const char *d = NULL;
816 int mode;
817 if (discp)
818 d = SvPV_const(discp, len);
819 mode = mode_from_discipline(d, len);
f0a78170
NC
820 if (PerlIO_binmode(aTHX_ fp, IoTYPE(io), mode, d)) {
821 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
822 if (!PerlIO_binmode(aTHX_ IoOFP(io), IoTYPE(io), mode, d)) {
823 SPAGAIN;
824 RETPUSHUNDEF;
825 }
826 }
827 SPAGAIN;
828 RETPUSHYES;
829 }
830 else {
831 SPAGAIN;
832 RETPUSHUNDEF;
38af81ff 833 }
40d98b49 834 }
a0d0e21e
LW
835}
836
837PP(pp_tie)
838{
27da23d5 839 dVAR; dSP; dMARK;
a0d0e21e 840 HV* stash;
07822e36 841 GV *gv = NULL;
a0d0e21e 842 SV *sv;
1df70142 843 const I32 markoff = MARK - PL_stack_base;
e1ec3a88 844 const char *methname;
14befaf4 845 int how = PERL_MAGIC_tied;
e336de0d 846 U32 items;
c4420975 847 SV *varsv = *++MARK;
a0d0e21e 848
6b05c17a
NIS
849 switch(SvTYPE(varsv)) {
850 case SVt_PVHV:
851 methname = "TIEHASH";
85fbaab2 852 HvEITER_set(MUTABLE_HV(varsv), 0);
6b05c17a
NIS
853 break;
854 case SVt_PVAV:
855 methname = "TIEARRAY";
856 break;
857 case SVt_PVGV:
13be902c 858 case SVt_PVLV:
8bb5f786 859 if (isGV_with_GP(varsv) && !SvFAKE(varsv)) {
6e592b3a
BM
860 methname = "TIEHANDLE";
861 how = PERL_MAGIC_tiedscalar;
862 /* For tied filehandles, we apply tiedscalar magic to the IO
863 slot of the GP rather than the GV itself. AMS 20010812 */
864 if (!GvIOp(varsv))
865 GvIOp(varsv) = newIO();
ad64d0ec 866 varsv = MUTABLE_SV(GvIOp(varsv));
6e592b3a
BM
867 break;
868 }
869 /* FALL THROUGH */
6b05c17a
NIS
870 default:
871 methname = "TIESCALAR";
14befaf4 872 how = PERL_MAGIC_tiedscalar;
6b05c17a
NIS
873 break;
874 }
e336de0d 875 items = SP - MARK++;
a91d1d42 876 if (sv_isobject(*MARK)) { /* Calls GET magic. */
d343c3ef 877 ENTER_with_name("call_TIE");
e788e7d3 878 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 879 PUSHMARK(SP);
eb160463 880 EXTEND(SP,(I32)items);
e336de0d
GS
881 while (items--)
882 PUSHs(*MARK++);
883 PUTBACK;
864dbfa3 884 call_method(methname, G_SCALAR);
301e8125 885 }
6b05c17a 886 else {
086d2913
NC
887 /* Can't use call_method here, else this: fileno FOO; tie @a, "FOO"
888 * will attempt to invoke IO::File::TIEARRAY, with (best case) the
889 * wrong error message, and worse case, supreme action at a distance.
890 * (Sorry obfuscation writers. You're not going to be given this one.)
6b05c17a 891 */
4886938f
BF
892 stash = gv_stashsv(*MARK, 0);
893 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
35c1215d 894 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
a91d1d42 895 methname, SVfARG(SvOK(*MARK) ? *MARK : &PL_sv_no));
6b05c17a 896 }
d343c3ef 897 ENTER_with_name("call_TIE");
e788e7d3 898 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 899 PUSHMARK(SP);
eb160463 900 EXTEND(SP,(I32)items);
e336de0d
GS
901 while (items--)
902 PUSHs(*MARK++);
903 PUTBACK;
ad64d0ec 904 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
6b05c17a 905 }
a0d0e21e
LW
906 SPAGAIN;
907
908 sv = TOPs;
d3acc0f7 909 POPSTACK;
a0d0e21e 910 if (sv_isobject(sv)) {
33c27489 911 sv_unmagic(varsv, how);
ae21d580 912 /* Croak if a self-tie on an aggregate is attempted. */
b881518d 913 if (varsv == SvRV(sv) &&
d87ebaca
YST
914 (SvTYPE(varsv) == SVt_PVAV ||
915 SvTYPE(varsv) == SVt_PVHV))
ae21d580
JH
916 Perl_croak(aTHX_
917 "Self-ties of arrays and hashes are not supported");
a0714e2c 918 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
a0d0e21e 919 }
d343c3ef 920 LEAVE_with_name("call_TIE");
3280af22 921 SP = PL_stack_base + markoff;
a0d0e21e
LW
922 PUSHs(sv);
923 RETURN;
924}
925
926PP(pp_untie)
927{
27da23d5 928 dVAR; dSP;
5b468f54 929 MAGIC *mg;
33c27489 930 SV *sv = POPs;
1df70142 931 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 932 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
55497cff 933
ca0d4ed9 934 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
5b468f54
AMS
935 RETPUSHYES;
936
65eba18f 937 if ((mg = SvTIED_mg(sv, how))) {
1b6737cc 938 SV * const obj = SvRV(SvTIED_obj(sv, mg));
fa2b88e0 939 if (obj) {
c4420975 940 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
0bd48802 941 CV *cv;
c4420975 942 if (gv && isGV(gv) && (cv = GvCV(gv))) {
fa2b88e0 943 PUSHMARK(SP);
c33ef3ac 944 PUSHs(SvTIED_obj(MUTABLE_SV(gv), mg));
6e449a3a 945 mXPUSHi(SvREFCNT(obj) - 1);
fa2b88e0 946 PUTBACK;
d343c3ef 947 ENTER_with_name("call_UNTIE");
ad64d0ec 948 call_sv(MUTABLE_SV(cv), G_VOID);
d343c3ef 949 LEAVE_with_name("call_UNTIE");
fa2b88e0
JS
950 SPAGAIN;
951 }
a2a5de95
NC
952 else if (mg && SvREFCNT(obj) > 1) {
953 Perl_ck_warner(aTHX_ packWARN(WARN_UNTIE),
954 "untie attempted while %"UVuf" inner references still exist",
955 (UV)SvREFCNT(obj) - 1 ) ;
c4420975 956 }
cbdc8872
PP
957 }
958 }
38193a09 959 sv_unmagic(sv, how) ;
55497cff 960 RETPUSHYES;
a0d0e21e
LW
961}
962
c07a80fd
PP
963PP(pp_tied)
964{
97aff369 965 dVAR;
39644a26 966 dSP;
1b6737cc 967 const MAGIC *mg;
33c27489 968 SV *sv = POPs;
1df70142 969 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 970 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
5b468f54 971
4be76e1f 972 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
5b468f54 973 RETPUSHUNDEF;
c07a80fd 974
155aba94 975 if ((mg = SvTIED_mg(sv, how))) {
dc456155 976 PUSHs(SvTIED_obj(sv, mg));
33c27489 977 RETURN;
c07a80fd 978 }
c07a80fd
PP
979 RETPUSHUNDEF;
980}
981
a0d0e21e
LW
982PP(pp_dbmopen)
983{
27da23d5 984 dVAR; dSP;
a0d0e21e
LW
985 dPOPPOPssrl;
986 HV* stash;
07822e36 987 GV *gv = NULL;
a0d0e21e 988
85fbaab2 989 HV * const hv = MUTABLE_HV(POPs);
84bafc02 990 SV * const sv = newSVpvs_flags("AnyDBM_File", SVs_TEMP);
da51bb9b 991 stash = gv_stashsv(sv, 0);
8ebc5c01 992 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
a0d0e21e 993 PUTBACK;
864dbfa3 994 require_pv("AnyDBM_File.pm");
a0d0e21e 995 SPAGAIN;
eff494dd 996 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH")))
cea2e8a9 997 DIE(aTHX_ "No dbm on this machine");
a0d0e21e
LW
998 }
999
57d3b86d 1000 ENTER;
924508f0 1001 PUSHMARK(SP);
6b05c17a 1002
924508f0 1003 EXTEND(SP, 5);
a0d0e21e
LW
1004 PUSHs(sv);
1005 PUSHs(left);
1006 if (SvIV(right))
6e449a3a 1007 mPUSHu(O_RDWR|O_CREAT);
a0d0e21e 1008 else
6e449a3a 1009 mPUSHu(O_RDWR);
a0d0e21e 1010 PUSHs(right);
57d3b86d 1011 PUTBACK;
ad64d0ec 1012 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
a0d0e21e
LW
1013 SPAGAIN;
1014
1015 if (!sv_isobject(TOPs)) {
924508f0
GS
1016 SP--;
1017 PUSHMARK(SP);
a0d0e21e
LW
1018 PUSHs(sv);
1019 PUSHs(left);
6e449a3a 1020 mPUSHu(O_RDONLY);
a0d0e21e 1021 PUSHs(right);
a0d0e21e 1022 PUTBACK;
ad64d0ec 1023 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
a0d0e21e
LW
1024 SPAGAIN;
1025 }
1026
6b05c17a 1027 if (sv_isobject(TOPs)) {
ad64d0ec
NC
1028 sv_unmagic(MUTABLE_SV(hv), PERL_MAGIC_tied);
1029 sv_magic(MUTABLE_SV(hv), TOPs, PERL_MAGIC_tied, NULL, 0);
6b05c17a 1030 }
a0d0e21e
LW
1031 LEAVE;
1032 RETURN;
1033}
1034
a0d0e21e
LW
1035PP(pp_sselect)
1036{
a0d0e21e 1037#ifdef HAS_SELECT
97aff369 1038 dVAR; dSP; dTARGET;
a0d0e21e
LW
1039 register I32 i;
1040 register I32 j;
1041 register char *s;
1042 register SV *sv;
65202027 1043 NV value;
a0d0e21e
LW
1044 I32 maxlen = 0;
1045 I32 nfound;
1046 struct timeval timebuf;
1047 struct timeval *tbuf = &timebuf;
1048 I32 growsize;
1049 char *fd_sets[4];
1050#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1051 I32 masksize;
1052 I32 offset;
1053 I32 k;
1054
1055# if BYTEORDER & 0xf0000
1056# define ORDERBYTE (0x88888888 - BYTEORDER)
1057# else
1058# define ORDERBYTE (0x4444 - BYTEORDER)
1059# endif
1060
1061#endif
1062
1063 SP -= 4;
1064 for (i = 1; i <= 3; i++) {
c4420975 1065 SV * const sv = SP[i];
9d6d5a79 1066 SvGETMAGIC(sv);
15547071
GA
1067 if (!SvOK(sv))
1068 continue;
1069 if (SvREADONLY(sv)) {
729c079f
NC
1070 if (SvIsCOW(sv))
1071 sv_force_normal_flags(sv, 0);
15547071 1072 if (SvREADONLY(sv) && !(SvPOK(sv) && SvCUR(sv) == 0))
6ad8f254 1073 Perl_croak_no_modify(aTHX);
729c079f 1074 }
4ef2275c 1075 if (!SvPOK(sv)) {
9d6d5a79
FC
1076 if (!SvPOKp(sv))
1077 Perl_ck_warner(aTHX_ packWARN(WARN_MISC),
1078 "Non-string passed as bitmask");
1079 SvPV_force_nomg_nolen(sv); /* force string conversion */
4ef2275c 1080 }
729c079f 1081 j = SvCUR(sv);
a0d0e21e
LW
1082 if (maxlen < j)
1083 maxlen = j;
1084 }
1085
5ff3f7a4 1086/* little endians can use vecs directly */
e366b469 1087#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
5ff3f7a4 1088# ifdef NFDBITS
a0d0e21e 1089
5ff3f7a4
GS
1090# ifndef NBBY
1091# define NBBY 8
1092# endif
a0d0e21e
LW
1093
1094 masksize = NFDBITS / NBBY;
5ff3f7a4 1095# else
a0d0e21e 1096 masksize = sizeof(long); /* documented int, everyone seems to use long */
5ff3f7a4 1097# endif
a0d0e21e
LW
1098 Zero(&fd_sets[0], 4, char*);
1099#endif
1100
ad517f75
MHM
1101# if SELECT_MIN_BITS == 1
1102 growsize = sizeof(fd_set);
1103# else
1104# if defined(__GLIBC__) && defined(__FD_SETSIZE)
1105# undef SELECT_MIN_BITS
1106# define SELECT_MIN_BITS __FD_SETSIZE
1107# endif
e366b469
PG
1108 /* If SELECT_MIN_BITS is greater than one we most probably will want
1109 * to align the sizes with SELECT_MIN_BITS/8 because for example
1110 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
1111 * UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
1112 * on (sets/tests/clears bits) is 32 bits. */
1113 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
e366b469
PG
1114# endif
1115
a0d0e21e
LW
1116 sv = SP[4];
1117 if (SvOK(sv)) {
1118 value = SvNV(sv);
1119 if (value < 0.0)
1120 value = 0.0;
1121 timebuf.tv_sec = (long)value;
65202027 1122 value -= (NV)timebuf.tv_sec;
a0d0e21e
LW
1123 timebuf.tv_usec = (long)(value * 1000000.0);
1124 }
1125 else
4608196e 1126 tbuf = NULL;
a0d0e21e
LW
1127
1128 for (i = 1; i <= 3; i++) {
1129 sv = SP[i];
15547071 1130 if (!SvOK(sv) || SvCUR(sv) == 0) {
a0d0e21e
LW
1131 fd_sets[i] = 0;
1132 continue;
1133 }
4ef2275c 1134 assert(SvPOK(sv));
a0d0e21e
LW
1135 j = SvLEN(sv);
1136 if (j < growsize) {
1137 Sv_Grow(sv, growsize);
a0d0e21e 1138 }
c07a80fd
PP
1139 j = SvCUR(sv);
1140 s = SvPVX(sv) + j;
1141 while (++j <= growsize) {
1142 *s++ = '\0';
1143 }
1144
a0d0e21e
LW
1145#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1146 s = SvPVX(sv);
a02a5408 1147 Newx(fd_sets[i], growsize, char);
a0d0e21e
LW
1148 for (offset = 0; offset < growsize; offset += masksize) {
1149 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1150 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1151 }
1152#else
1153 fd_sets[i] = SvPVX(sv);
1154#endif
1155 }
1156
dc4c69d9
JH
1157#ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1158 /* Can't make just the (void*) conditional because that would be
1159 * cpp #if within cpp macro, and not all compilers like that. */
1160 nfound = PerlSock_select(
1161 maxlen * 8,
1162 (Select_fd_set_t) fd_sets[1],
1163 (Select_fd_set_t) fd_sets[2],
1164 (Select_fd_set_t) fd_sets[3],
1165 (void*) tbuf); /* Workaround for compiler bug. */
1166#else
6ad3d225 1167 nfound = PerlSock_select(
a0d0e21e
LW
1168 maxlen * 8,
1169 (Select_fd_set_t) fd_sets[1],
1170 (Select_fd_set_t) fd_sets[2],
1171 (Select_fd_set_t) fd_sets[3],
1172 tbuf);
dc4c69d9 1173#endif
a0d0e21e
LW
1174 for (i = 1; i <= 3; i++) {
1175 if (fd_sets[i]) {
1176 sv = SP[i];
1177#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1178 s = SvPVX(sv);
1179 for (offset = 0; offset < growsize; offset += masksize) {
1180 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1181 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1182 }
1183 Safefree(fd_sets[i]);
1184#endif
1185 SvSETMAGIC(sv);
1186 }
1187 }
1188
4189264e 1189 PUSHi(nfound);
a0d0e21e 1190 if (GIMME == G_ARRAY && tbuf) {
65202027
DS
1191 value = (NV)(timebuf.tv_sec) +
1192 (NV)(timebuf.tv_usec) / 1000000.0;
6e449a3a 1193 mPUSHn(value);
a0d0e21e
LW
1194 }
1195 RETURN;
1196#else
cea2e8a9 1197 DIE(aTHX_ "select not implemented");
a0d0e21e
LW
1198#endif
1199}
1200
8226a3d7
NC
1201/*
1202=for apidoc setdefout
1203
1204Sets PL_defoutgv, the default file handle for output, to the passed in
1205typeglob. As PL_defoutgv "owns" a reference on its typeglob, the reference
1206count of the passed in typeglob is increased by one, and the reference count
1207of the typeglob that PL_defoutgv points to is decreased by one.
1208
1209=cut
1210*/
1211
4633a7c4 1212void
864dbfa3 1213Perl_setdefout(pTHX_ GV *gv)
4633a7c4 1214{
97aff369 1215 dVAR;
b37c2d43 1216 SvREFCNT_inc_simple_void(gv);
ef8d46e8 1217 SvREFCNT_dec(PL_defoutgv);
3280af22 1218 PL_defoutgv = gv;
4633a7c4
LW
1219}
1220
a0d0e21e
LW
1221PP(pp_select)
1222{
97aff369 1223 dVAR; dSP; dTARGET;
4633a7c4 1224 HV *hv;
159b6efe 1225 GV * const newdefout = (PL_op->op_private > 0) ? (MUTABLE_GV(POPs)) : NULL;
099be4f1 1226 GV * egv = GvEGVx(PL_defoutgv);
4633a7c4 1227
4633a7c4 1228 if (!egv)
3280af22 1229 egv = PL_defoutgv;
099be4f1 1230 hv = isGV_with_GP(egv) ? GvSTASH(egv) : NULL;
4633a7c4 1231 if (! hv)
3280af22 1232 XPUSHs(&PL_sv_undef);
4633a7c4 1233 else {
204263bc
FC
1234 GV * const * const gvp =
1235 HvENAME(hv)
1236 ? (GV**)hv_fetch(hv, GvNAME(egv), HEK_UTF8(GvNAME_HEK(egv)) ? -GvNAMELEN(egv) : GvNAMELEN(egv), FALSE)
1237 : NULL;
f86702cc 1238 if (gvp && *gvp == egv) {
bd61b366 1239 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
f86702cc
PP
1240 XPUSHTARG;
1241 }
1242 else {
ad64d0ec 1243 mXPUSHs(newRV(MUTABLE_SV(egv)));
f86702cc 1244 }
4633a7c4
LW
1245 }
1246
1247 if (newdefout) {
ded8aa31
GS
1248 if (!GvIO(newdefout))
1249 gv_IOadd(newdefout);
4633a7c4
LW
1250 setdefout(newdefout);
1251 }
1252
a0d0e21e
LW
1253 RETURN;
1254}
1255
1256PP(pp_getc)
1257{
27da23d5 1258 dVAR; dSP; dTARGET;
30901a8a
FC
1259 GV * const gv =
1260 MAXARG==0 || (!TOPs && !POPs) ? PL_stdingv : MUTABLE_GV(POPs);
9c9f25b8 1261 IO *const io = GvIO(gv);
2ae324a7 1262
ac3697cd
NC
1263 if (MAXARG == 0)
1264 EXTEND(SP, 1);
1265
9c9f25b8 1266 if (io) {
a5e1d062 1267 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1268 if (mg) {
0240605e 1269 const U32 gimme = GIMME_V;
d682515d 1270 Perl_tied_method(aTHX_ "GETC", SP, MUTABLE_SV(io), mg, gimme, 0);
0240605e
NC
1271 if (gimme == G_SCALAR) {
1272 SPAGAIN;
a79db61d 1273 SvSetMagicSV_nosteal(TARG, TOPs);
0240605e
NC
1274 }
1275 return NORMAL;
a79db61d 1276 }
2ae324a7 1277 }
90133b69 1278 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
51087808 1279 if (!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
831e4cc3 1280 report_evil_fh(gv);
b5fe5ca2 1281 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1282 RETPUSHUNDEF;
90133b69 1283 }
bbce6d69 1284 TAINT;
76f68e9b 1285 sv_setpvs(TARG, " ");
9bc64814 1286 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
7d59b7e4
NIS
1287 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1288 /* Find out how many bytes the char needs */
aa07b2f6 1289 Size_t len = UTF8SKIP(SvPVX_const(TARG));
7d59b7e4
NIS
1290 if (len > 1) {
1291 SvGROW(TARG,len+1);
1292 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1293 SvCUR_set(TARG,1+len);
1294 }
1295 SvUTF8_on(TARG);
1296 }
a0d0e21e
LW
1297 PUSHTARG;
1298 RETURN;
1299}
1300
76e3520e 1301STATIC OP *
cea2e8a9 1302S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
a0d0e21e 1303{
27da23d5 1304 dVAR;
c09156bb 1305 register PERL_CONTEXT *cx;
f54cb97a 1306 const I32 gimme = GIMME_V;
a0d0e21e 1307
7918f24d
NC
1308 PERL_ARGS_ASSERT_DOFORM;
1309
7b190374
NC
1310 if (cv && CvCLONE(cv))
1311 cv = MUTABLE_CV(sv_2mortal(MUTABLE_SV(cv_clone(cv))));
1312
a0d0e21e
LW
1313 ENTER;
1314 SAVETMPS;
1315
146174a9 1316 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
10067d9a 1317 PUSHFORMAT(cx, retop);
fd617465
DM
1318 SAVECOMPPAD();
1319 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), 1);
a0d0e21e 1320
4633a7c4 1321 setdefout(gv); /* locally select filehandle so $% et al work */
a0d0e21e
LW
1322 return CvSTART(cv);
1323}
1324
1325PP(pp_enterwrite)
1326{
97aff369 1327 dVAR;
39644a26 1328 dSP;
a0d0e21e
LW
1329 register GV *gv;
1330 register IO *io;
1331 GV *fgv;
07822e36
JH
1332 CV *cv = NULL;
1333 SV *tmpsv = NULL;
a0d0e21e 1334
2addaaf3 1335 if (MAXARG == 0) {
3280af22 1336 gv = PL_defoutgv;
2addaaf3
NC
1337 EXTEND(SP, 1);
1338 }
a0d0e21e 1339 else {
159b6efe 1340 gv = MUTABLE_GV(POPs);
a0d0e21e 1341 if (!gv)
3280af22 1342 gv = PL_defoutgv;
a0d0e21e 1343 }
a0d0e21e
LW
1344 io = GvIO(gv);
1345 if (!io) {
1346 RETPUSHNO;
1347 }
1348 if (IoFMT_GV(io))
1349 fgv = IoFMT_GV(io);
1350 else
1351 fgv = gv;
1352
a79db61d
AL
1353 if (!fgv)
1354 goto not_a_format_reference;
1355
a0d0e21e 1356 cv = GvFORM(fgv);
a0d0e21e 1357 if (!cv) {
10edeb5d 1358 tmpsv = sv_newmortal();
f4a7049d 1359 gv_efullname4(tmpsv, fgv, NULL, FALSE);
bf29d05f
BF
1360 if (SvPOK(tmpsv) && *SvPV_nolen_const(tmpsv))
1361 DIE(aTHX_ "Undefined format \"%"SVf"\" called", SVfARG(tmpsv));
a79db61d
AL
1362
1363 not_a_format_reference:
cea2e8a9 1364 DIE(aTHX_ "Not a format reference");
a0d0e21e 1365 }
44a8e56a 1366 IoFLAGS(io) &= ~IOf_DIDTOP;
533c011a 1367 return doform(cv,gv,PL_op->op_next);
a0d0e21e
LW
1368}
1369
1370PP(pp_leavewrite)
1371{
27da23d5 1372 dVAR; dSP;
f9c764c5 1373 GV * const gv = cxstack[cxstack_ix].blk_format.gv;
1b6737cc 1374 register IO * const io = GvIOp(gv);
8b8cacda 1375 PerlIO *ofp;
760ac839 1376 PerlIO *fp;
8772537c
AL
1377 SV **newsp;
1378 I32 gimme;
c09156bb 1379 register PERL_CONTEXT *cx;
8f89e5a9 1380 OP *retop;
a0d0e21e 1381
8b8cacda 1382 if (!io || !(ofp = IoOFP(io)))
1383 goto forget_top;
1384
760ac839 1385 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1386 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
8b8cacda 1387
3280af22
NIS
1388 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1389 PL_formtarget != PL_toptarget)
a0d0e21e 1390 {
4633a7c4
LW
1391 GV *fgv;
1392 CV *cv;
a0d0e21e
LW
1393 if (!IoTOP_GV(io)) {
1394 GV *topgv;
a0d0e21e
LW
1395
1396 if (!IoTOP_NAME(io)) {
1b6737cc 1397 SV *topname;
a0d0e21e
LW
1398 if (!IoFMT_NAME(io))
1399 IoFMT_NAME(io) = savepv(GvNAME(gv));
d0c0e7dd
FC
1400 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%"HEKf"_TOP",
1401 HEKfARG(GvNAME_HEK(gv))));
f776e3cd 1402 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
748a9306 1403 if ((topgv && GvFORM(topgv)) ||
fafc274c 1404 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
2e0de35c 1405 IoTOP_NAME(io) = savesvpv(topname);
a0d0e21e 1406 else
89529cee 1407 IoTOP_NAME(io) = savepvs("top");
a0d0e21e 1408 }
f776e3cd 1409 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
a0d0e21e 1410 if (!topgv || !GvFORM(topgv)) {
b929a54b 1411 IoLINES_LEFT(io) = IoPAGE_LEN(io);
a0d0e21e
LW
1412 goto forget_top;
1413 }
1414 IoTOP_GV(io) = topgv;
1415 }
748a9306
LW
1416 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1417 I32 lines = IoLINES_LEFT(io);
504618e9 1418 const char *s = SvPVX_const(PL_formtarget);
8e07c86e
AD
1419 if (lines <= 0) /* Yow, header didn't even fit!!! */
1420 goto forget_top;
748a9306
LW
1421 while (lines-- > 0) {
1422 s = strchr(s, '\n');
1423 if (!s)
1424 break;
1425 s++;
1426 }
1427 if (s) {
f54cb97a 1428 const STRLEN save = SvCUR(PL_formtarget);
aa07b2f6 1429 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
d75029d0
NIS
1430 do_print(PL_formtarget, ofp);
1431 SvCUR_set(PL_formtarget, save);
3280af22
NIS
1432 sv_chop(PL_formtarget, s);
1433 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW
1434 }
1435 }
a0d0e21e 1436 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
d75029d0 1437 do_print(PL_formfeed, ofp);
a0d0e21e
LW
1438 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1439 IoPAGE(io)++;
3280af22 1440 PL_formtarget = PL_toptarget;
748a9306 1441 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4
LW
1442 fgv = IoTOP_GV(io);
1443 if (!fgv)
cea2e8a9 1444 DIE(aTHX_ "bad top format reference");
4633a7c4 1445 cv = GvFORM(fgv);
1df70142
AL
1446 if (!cv) {
1447 SV * const sv = sv_newmortal();
bd61b366 1448 gv_efullname4(sv, fgv, NULL, FALSE);
bf29d05f
BF
1449 if (SvPOK(sv) && *SvPV_nolen_const(sv))
1450 DIE(aTHX_ "Undefined top format \"%"SVf"\" called", SVfARG(sv));
0e528f24
JH
1451 else
1452 DIE(aTHX_ "Undefined top format called");
4633a7c4 1453 }
0e528f24 1454 return doform(cv, gv, PL_op);
a0d0e21e
LW
1455 }
1456
1457 forget_top:
3280af22 1458 POPBLOCK(cx,PL_curpm);
a0d0e21e 1459 POPFORMAT(cx);
8f89e5a9 1460 retop = cx->blk_sub.retop;
a0d0e21e
LW
1461 LEAVE;
1462
1463 fp = IoOFP(io);
1464 if (!fp) {
7716c5c5
NC
1465 if (IoIFP(io))
1466 report_wrongway_fh(gv, '<');
c521cf7c 1467 else
7716c5c5 1468 report_evil_fh(gv);
3280af22 1469 PUSHs(&PL_sv_no);
a0d0e21e
LW
1470 }
1471 else {
3280af22 1472 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
a2a5de95 1473 Perl_ck_warner(aTHX_ packWARN(WARN_IO), "page overflow");
a0d0e21e 1474 }
d75029d0 1475 if (!do_print(PL_formtarget, fp))
3280af22 1476 PUSHs(&PL_sv_no);
a0d0e21e 1477 else {
3280af22
NIS
1478 FmLINES(PL_formtarget) = 0;
1479 SvCUR_set(PL_formtarget, 0);
1480 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1481 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1482 (void)PerlIO_flush(fp);
3280af22 1483 PUSHs(&PL_sv_yes);
a0d0e21e
LW
1484 }
1485 }
9cbac4c7 1486 /* bad_ofp: */
3280af22 1487 PL_formtarget = PL_bodytarget;
a0d0e21e 1488 PUTBACK;
29033a8a
SH
1489 PERL_UNUSED_VAR(newsp);
1490 PERL_UNUSED_VAR(gimme);
8f89e5a9 1491 return retop;
a0d0e21e
LW
1492}
1493
1494PP(pp_prtf)
1495{
27da23d5 1496 dVAR; dSP; dMARK; dORIGMARK;
760ac839 1497 PerlIO *fp;
26db47c4 1498 SV *sv;
a0d0e21e 1499
159b6efe
NC
1500 GV * const gv
1501 = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv;
9c9f25b8 1502 IO *const io = GvIO(gv);
46fc3d4c 1503
9c9f25b8 1504 if (io) {
a5e1d062 1505 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d
AL
1506 if (mg) {
1507 if (MARK == ORIGMARK) {
1508 MEXTEND(SP, 1);
1509 ++MARK;
1510 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1511 ++SP;
1512 }
d682515d
NC
1513 return Perl_tied_method(aTHX_ "PRINTF", mark - 1, MUTABLE_SV(io),
1514 mg,
1515 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1516 sp - mark);
a79db61d 1517 }
46fc3d4c
PP
1518 }
1519
561b68a9 1520 sv = newSV(0);
9c9f25b8 1521 if (!io) {
51087808 1522 report_evil_fh(gv);
93189314 1523 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW
1524 goto just_say_no;
1525 }
1526 else if (!(fp = IoOFP(io))) {
7716c5c5
NC
1527 if (IoIFP(io))
1528 report_wrongway_fh(gv, '<');
1529 else if (ckWARN(WARN_CLOSED))
1530 report_evil_fh(gv);
93189314 1531 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
a0d0e21e
LW
1532 goto just_say_no;
1533 }
1534 else {
1535 do_sprintf(sv, SP - MARK, MARK + 1);
1536 if (!do_print(sv, fp))
1537 goto just_say_no;
1538
1539 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1540 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW
1541 goto just_say_no;
1542 }
1543 SvREFCNT_dec(sv);
1544 SP = ORIGMARK;
3280af22 1545 PUSHs(&PL_sv_yes);
a0d0e21e
LW
1546 RETURN;
1547
1548 just_say_no:
1549 SvREFCNT_dec(sv);
1550 SP = ORIGMARK;
3280af22 1551 PUSHs(&PL_sv_undef);
a0d0e21e
LW
1552 RETURN;
1553}
1554
c07a80fd
PP
1555PP(pp_sysopen)
1556{
97aff369 1557 dVAR;
39644a26 1558 dSP;
de5e49e1 1559 const int perm = (MAXARG > 3 && (TOPs || POPs)) ? POPi : 0666;
1df70142 1560 const int mode = POPi;
1b6737cc 1561 SV * const sv = POPs;
159b6efe 1562 GV * const gv = MUTABLE_GV(POPs);
1b6737cc 1563 STRLEN len;
c07a80fd 1564
4592e6ca 1565 /* Need TIEHANDLE method ? */
1b6737cc 1566 const char * const tmps = SvPV_const(sv, len);
e62f0680 1567 /* FIXME? do_open should do const */
4608196e 1568 if (do_open(gv, tmps, len, TRUE, mode, perm, NULL)) {
c07a80fd 1569 IoLINES(GvIOp(gv)) = 0;
3280af22 1570 PUSHs(&PL_sv_yes);
c07a80fd
PP
1571 }
1572 else {
3280af22 1573 PUSHs(&PL_sv_undef);
c07a80fd
PP
1574 }
1575 RETURN;
1576}
1577
a0d0e21e
LW
1578PP(pp_sysread)
1579{
27da23d5 1580 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
0b423688 1581 SSize_t offset;
a0d0e21e
LW
1582 IO *io;
1583 char *buffer;
0b423688 1584 STRLEN orig_size;
5b54f415 1585 SSize_t length;
eb5c063a 1586 SSize_t count;
748a9306 1587 SV *bufsv;
a0d0e21e 1588 STRLEN blen;
eb5c063a 1589 int fp_utf8;
1dd30107
NC
1590 int buffer_utf8;
1591 SV *read_target;
eb5c063a
NIS
1592 Size_t got = 0;
1593 Size_t wanted;
1d636c13 1594 bool charstart = FALSE;
87330c3c
JH
1595 STRLEN charskip = 0;
1596 STRLEN skip = 0;
a0d0e21e 1597
159b6efe 1598 GV * const gv = MUTABLE_GV(*++MARK);
5b468f54 1599 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1b6737cc 1600 && gv && (io = GvIO(gv)) )
137443ea 1601 {
a5e1d062 1602 const MAGIC *const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1b6737cc 1603 if (mg) {
d682515d
NC
1604 return Perl_tied_method(aTHX_ "READ", mark - 1, MUTABLE_SV(io), mg,
1605 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1606 sp - mark);
1b6737cc 1607 }
2ae324a7
PP
1608 }
1609
a0d0e21e
LW
1610 if (!gv)
1611 goto say_undef;
748a9306 1612 bufsv = *++MARK;
ff68c719 1613 if (! SvOK(bufsv))
76f68e9b 1614 sv_setpvs(bufsv, "");
a0d0e21e 1615 length = SvIVx(*++MARK);
748a9306 1616 SETERRNO(0,0);
a0d0e21e
LW
1617 if (MARK < SP)
1618 offset = SvIVx(*++MARK);
1619 else
1620 offset = 0;
1621 io = GvIO(gv);
b5fe5ca2 1622 if (!io || !IoIFP(io)) {
51087808 1623 report_evil_fh(gv);
b5fe5ca2 1624 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1625 goto say_undef;
b5fe5ca2 1626 }
0064a8a9 1627 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
7d59b7e4 1628 buffer = SvPVutf8_force(bufsv, blen);
1e54db1a 1629 /* UTF-8 may not have been set if they are all low bytes */
eb5c063a 1630 SvUTF8_on(bufsv);
9b9d7ce8 1631 buffer_utf8 = 0;
7d59b7e4
NIS
1632 }
1633 else {
1634 buffer = SvPV_force(bufsv, blen);
1dd30107 1635 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
7d59b7e4
NIS
1636 }
1637 if (length < 0)
1638 DIE(aTHX_ "Negative length");
eb5c063a 1639 wanted = length;
7d59b7e4 1640
d0965105
JH
1641 charstart = TRUE;
1642 charskip = 0;
87330c3c 1643 skip = 0;
d0965105 1644
a0d0e21e 1645#ifdef HAS_SOCKET
533c011a 1646 if (PL_op->op_type == OP_RECV) {
0b423688 1647 Sock_size_t bufsize;
46fc3d4c 1648 char namebuf[MAXPATHLEN];
17a8c7ba 1649#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
490ab354
JH
1650 bufsize = sizeof (struct sockaddr_in);
1651#else
46fc3d4c 1652 bufsize = sizeof namebuf;
490ab354 1653#endif
abf95952
IZ
1654#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1655 if (bufsize >= 256)
1656 bufsize = 255;
1657#endif
eb160463 1658 buffer = SvGROW(bufsv, (STRLEN)(length+1));
bbce6d69 1659 /* 'offset' means 'flags' here */
eb5c063a 1660 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
10edeb5d 1661 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1662 if (count < 0)
a0d0e21e 1663 RETPUSHUNDEF;
8eb023a9
DM
1664 /* MSG_TRUNC can give oversized count; quietly lose it */
1665 if (count > length)
1666 count = length;
4107cc59
OF
1667#ifdef EPOC
1668 /* Bogus return without padding */
1669 bufsize = sizeof (struct sockaddr_in);
1670#endif
eb5c063a 1671 SvCUR_set(bufsv, count);
748a9306
LW
1672 *SvEND(bufsv) = '\0';
1673 (void)SvPOK_only(bufsv);
eb5c063a
NIS
1674 if (fp_utf8)
1675 SvUTF8_on(bufsv);
748a9306 1676 SvSETMAGIC(bufsv);
aac0dd9a 1677 /* This should not be marked tainted if the fp is marked clean */
bbce6d69
PP
1678 if (!(IoFLAGS(io) & IOf_UNTAINT))
1679 SvTAINTED_on(bufsv);
a0d0e21e 1680 SP = ORIGMARK;
46fc3d4c 1681 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW
1682 PUSHs(TARG);
1683 RETURN;
1684 }
a0d0e21e 1685#endif
eb5c063a
NIS
1686 if (DO_UTF8(bufsv)) {
1687 /* offset adjust in characters not bytes */
1688 blen = sv_len_utf8(bufsv);
7d59b7e4 1689 }
bbce6d69 1690 if (offset < 0) {
0b423688 1691 if (-offset > (SSize_t)blen)
cea2e8a9 1692 DIE(aTHX_ "Offset outside string");
bbce6d69
PP
1693 offset += blen;
1694 }
eb5c063a
NIS
1695 if (DO_UTF8(bufsv)) {
1696 /* convert offset-as-chars to offset-as-bytes */
6960c29a
CH
1697 if (offset >= (int)blen)
1698 offset += SvCUR(bufsv) - blen;
1699 else
1700 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
eb5c063a
NIS
1701 }
1702 more_bytes:
0b423688 1703 orig_size = SvCUR(bufsv);
1dd30107
NC
1704 /* Allocating length + offset + 1 isn't perfect in the case of reading
1705 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1706 unduly.
1707 (should be 2 * length + offset + 1, or possibly something longer if
1708 PL_encoding is true) */
eb160463 1709 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
0b423688
TC
1710 if (offset > 0 && offset > (SSize_t)orig_size) { /* Zero any newly allocated space */
1711 Zero(buffer+orig_size, offset-orig_size, char);
cd52b7b2 1712 }
eb5c063a 1713 buffer = buffer + offset;
1dd30107
NC
1714 if (!buffer_utf8) {
1715 read_target = bufsv;
1716 } else {
1717 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1718 concatenate it to the current buffer. */
1719
1720 /* Truncate the existing buffer to the start of where we will be
1721 reading to: */
1722 SvCUR_set(bufsv, offset);
1723
1724 read_target = sv_newmortal();
862a34c6 1725 SvUPGRADE(read_target, SVt_PV);
fe2774ed 1726 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1dd30107 1727 }
eb5c063a 1728
533c011a 1729 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1730#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1731 if (IoTYPE(io) == IoTYPE_SOCKET) {
eb5c063a
NIS
1732 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1733 buffer, length, 0);
a7092146
GS
1734 }
1735 else
1736#endif
1737 {
eb5c063a
NIS
1738 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1739 buffer, length);
a7092146 1740 }
a0d0e21e
LW
1741 }
1742 else
1743#ifdef HAS_SOCKET__bad_code_maybe
50952442 1744 if (IoTYPE(io) == IoTYPE_SOCKET) {
0b423688 1745 Sock_size_t bufsize;
46fc3d4c 1746 char namebuf[MAXPATHLEN];
490ab354
JH
1747#if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1748 bufsize = sizeof (struct sockaddr_in);
1749#else
46fc3d4c 1750 bufsize = sizeof namebuf;
490ab354 1751#endif
eb5c063a 1752 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
46fc3d4c 1753 (struct sockaddr *)namebuf, &bufsize);
a0d0e21e
LW
1754 }
1755 else
1756#endif
3b02c43c 1757 {
eb5c063a
NIS
1758 count = PerlIO_read(IoIFP(io), buffer, length);
1759 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1760 if (count == 0 && PerlIO_error(IoIFP(io)))
1761 count = -1;
3b02c43c 1762 }
eb5c063a 1763 if (count < 0) {
7716c5c5 1764 if (IoTYPE(io) == IoTYPE_WRONLY)
a5390457 1765 report_wrongway_fh(gv, '>');
a0d0e21e 1766 goto say_undef;
af8c498a 1767 }
aa07b2f6 1768 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1dd30107
NC
1769 *SvEND(read_target) = '\0';
1770 (void)SvPOK_only(read_target);
0064a8a9 1771 if (fp_utf8 && !IN_BYTES) {
eb5c063a 1772 /* Look at utf8 we got back and count the characters */
1df70142 1773 const char *bend = buffer + count;
eb5c063a 1774 while (buffer < bend) {
d0965105
JH
1775 if (charstart) {
1776 skip = UTF8SKIP(buffer);
1777 charskip = 0;
1778 }
1779 if (buffer - charskip + skip > bend) {
eb5c063a
NIS
1780 /* partial character - try for rest of it */
1781 length = skip - (bend-buffer);
aa07b2f6 1782 offset = bend - SvPVX_const(bufsv);
d0965105
JH
1783 charstart = FALSE;
1784 charskip += count;
eb5c063a
NIS
1785 goto more_bytes;
1786 }
1787 else {
1788 got++;
1789 buffer += skip;
d0965105
JH
1790 charstart = TRUE;
1791 charskip = 0;
eb5c063a
NIS
1792 }
1793 }
1794 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1795 provided amount read (count) was what was requested (length)
1796 */
1797 if (got < wanted && count == length) {
d0965105 1798 length = wanted - got;
aa07b2f6 1799 offset = bend - SvPVX_const(bufsv);
eb5c063a
NIS
1800 goto more_bytes;
1801 }
1802 /* return value is character count */
1803 count = got;
1804 SvUTF8_on(bufsv);
1805 }
1dd30107
NC
1806 else if (buffer_utf8) {
1807 /* Let svcatsv upgrade the bytes we read in to utf8.
1808 The buffer is a mortal so will be freed soon. */
1809 sv_catsv_nomg(bufsv, read_target);
1810 }
748a9306 1811 SvSETMAGIC(bufsv);
aac0dd9a 1812 /* This should not be marked tainted if the fp is marked clean */
bbce6d69
PP
1813 if (!(IoFLAGS(io) & IOf_UNTAINT))
1814 SvTAINTED_on(bufsv);
a0d0e21e 1815 SP = ORIGMARK;
eb5c063a 1816 PUSHi(count);
a0d0e21e
LW
1817 RETURN;
1818
1819 say_undef:
1820 SP = ORIGMARK;
1821 RETPUSHUNDEF;
1822}
1823
60504e18 1824PP(pp_syswrite)
a0d0e21e 1825{
27da23d5 1826 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
748a9306 1827 SV *bufsv;
83003860 1828 const char *buffer;
8c99d73e 1829 SSize_t retval;
a0d0e21e 1830 STRLEN blen;
c9cb0f41 1831 STRLEN orig_blen_bytes;
64a1bc8e 1832 const int op_type = PL_op->op_type;
c9cb0f41
NC
1833 bool doing_utf8;
1834 U8 *tmpbuf = NULL;
159b6efe 1835 GV *const gv = MUTABLE_GV(*++MARK);
91472ad4
NC
1836 IO *const io = GvIO(gv);
1837
1838 if (op_type == OP_SYSWRITE && io) {
a5e1d062 1839 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1840 if (mg) {
a79db61d 1841 if (MARK == SP - 1) {
c8834ab7
TC
1842 SV *sv = *SP;
1843 mXPUSHi(sv_len(sv));
a79db61d
AL
1844 PUTBACK;
1845 }
1846
d682515d
NC
1847 return Perl_tied_method(aTHX_ "WRITE", mark - 1, MUTABLE_SV(io), mg,
1848 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1849 sp - mark);
64a1bc8e 1850 }
1d603a67 1851 }
a0d0e21e
LW
1852 if (!gv)
1853 goto say_undef;
64a1bc8e 1854
748a9306 1855 bufsv = *++MARK;
64a1bc8e 1856
748a9306 1857 SETERRNO(0,0);
cf167416 1858 if (!io || !IoIFP(io) || IoTYPE(io) == IoTYPE_RDONLY) {
8c99d73e 1859 retval = -1;
51087808
NC
1860 if (io && IoIFP(io))
1861 report_wrongway_fh(gv, '<');
1862 else
1863 report_evil_fh(gv);
b5fe5ca2 1864 SETERRNO(EBADF,RMS_IFI);
7d59b7e4
NIS
1865 goto say_undef;
1866 }
1867
c9cb0f41
NC
1868 /* Do this first to trigger any overloading. */
1869 buffer = SvPV_const(bufsv, blen);
1870 orig_blen_bytes = blen;
1871 doing_utf8 = DO_UTF8(bufsv);
1872
7d59b7e4 1873 if (PerlIO_isutf8(IoIFP(io))) {
6aa2f6a7 1874 if (!SvUTF8(bufsv)) {
c9cb0f41
NC
1875 /* We don't modify the original scalar. */
1876 tmpbuf = bytes_to_utf8((const U8*) buffer, &blen);
1877 buffer = (char *) tmpbuf;
1878 doing_utf8 = TRUE;
1879 }
a0d0e21e 1880 }
c9cb0f41
NC
1881 else if (doing_utf8) {
1882 STRLEN tmplen = blen;
a79db61d 1883 U8 * const result = bytes_from_utf8((const U8*) buffer, &tmplen, &doing_utf8);
c9cb0f41
NC
1884 if (!doing_utf8) {
1885 tmpbuf = result;
1886 buffer = (char *) tmpbuf;
1887 blen = tmplen;
1888 }
1889 else {
1890 assert((char *)result == buffer);
1891 Perl_croak(aTHX_ "Wide character in %s", OP_DESC(PL_op));
1892 }
7d59b7e4
NIS
1893 }
1894
e2712234 1895#ifdef HAS_SOCKET
7627e6d0 1896 if (op_type == OP_SEND) {
e2712234
NC
1897 const int flags = SvIVx(*++MARK);
1898 if (SP > MARK) {
1899 STRLEN mlen;
1900 char * const sockbuf = SvPVx(*++MARK, mlen);
1901 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1902 flags, (struct sockaddr *)sockbuf, mlen);
1903 }
1904 else {
1905 retval
1906 = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, flags);
1907 }
7627e6d0
NC
1908 }
1909 else
e2712234 1910#endif
7627e6d0 1911 {
c9cb0f41
NC
1912 Size_t length = 0; /* This length is in characters. */
1913 STRLEN blen_chars;
7d59b7e4 1914 IV offset;
c9cb0f41
NC
1915
1916 if (doing_utf8) {
1917 if (tmpbuf) {
1918 /* The SV is bytes, and we've had to upgrade it. */
1919 blen_chars = orig_blen_bytes;
1920 } else {
1921 /* The SV really is UTF-8. */
1922 if (SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
1923 /* Don't call sv_len_utf8 again because it will call magic
1924 or overloading a second time, and we might get back a
1925 different result. */
9a206dfd 1926 blen_chars = utf8_length((U8*)buffer, (U8*)buffer + blen);
c9cb0f41
NC
1927 } else {
1928 /* It's safe, and it may well be cached. */
1929 blen_chars = sv_len_utf8(bufsv);
1930 }
1931 }
1932 } else {
1933 blen_chars = blen;
1934 }
1935
1936 if (MARK >= SP) {
1937 length = blen_chars;
1938 } else {
1939#if Size_t_size > IVSIZE
1940 length = (Size_t)SvNVx(*++MARK);
1941#else
1942 length = (Size_t)SvIVx(*++MARK);
1943#endif
4b0c4b6f
NC
1944 if ((SSize_t)length < 0) {
1945 Safefree(tmpbuf);
c9cb0f41 1946 DIE(aTHX_ "Negative length");
4b0c4b6f 1947 }
7d59b7e4 1948 }
c9cb0f41 1949
bbce6d69 1950 if (MARK < SP) {
a0d0e21e 1951 offset = SvIVx(*++MARK);
bbce6d69 1952 if (offset < 0) {
4b0c4b6f
NC
1953 if (-offset > (IV)blen_chars) {
1954 Safefree(tmpbuf);
cea2e8a9 1955 DIE(aTHX_ "Offset outside string");
4b0c4b6f 1956 }
c9cb0f41 1957 offset += blen_chars;
3c946528 1958 } else if (offset > (IV)blen_chars) {
4b0c4b6f 1959 Safefree(tmpbuf);
cea2e8a9 1960 DIE(aTHX_ "Offset outside string");
4b0c4b6f 1961 }
bbce6d69 1962 } else
a0d0e21e 1963 offset = 0;
c9cb0f41
NC
1964 if (length > blen_chars - offset)
1965 length = blen_chars - offset;
1966 if (doing_utf8) {
1967 /* Here we convert length from characters to bytes. */
1968 if (tmpbuf || SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
1969 /* Either we had to convert the SV, or the SV is magical, or
1970 the SV has overloading, in which case we can't or mustn't
1971 or mustn't call it again. */
1972
1973 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
1974 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1975 } else {
1976 /* It's a real UTF-8 SV, and it's not going to change under
1977 us. Take advantage of any cache. */
1978 I32 start = offset;
1979 I32 len_I32 = length;
1980
1981 /* Convert the start and end character positions to bytes.
1982 Remember that the second argument to sv_pos_u2b is relative
1983 to the first. */
1984 sv_pos_u2b(bufsv, &start, &len_I32);
1985
1986 buffer += start;
1987 length = len_I32;
1988 }
7d59b7e4
NIS
1989 }
1990 else {
1991 buffer = buffer+offset;
1992 }
a7092146 1993#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 1994 if (IoTYPE(io) == IoTYPE_SOCKET) {
8c99d73e 1995 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1996 buffer, length, 0);
a7092146
GS
1997 }
1998 else
1999#endif
2000 {
94e4c244 2001 /* See the note at doio.c:do_print about filesize limits. --jhi */
8c99d73e 2002 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
7d59b7e4 2003 buffer, length);
a7092146 2004 }
a0d0e21e 2005 }
c9cb0f41 2006
8c99d73e 2007 if (retval < 0)
a0d0e21e
LW
2008 goto say_undef;
2009 SP = ORIGMARK;
c9cb0f41 2010 if (doing_utf8)
f36eea10 2011 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
4b0c4b6f 2012
a79db61d 2013 Safefree(tmpbuf);
8c99d73e
GS
2014#if Size_t_size > IVSIZE
2015 PUSHn(retval);
2016#else
2017 PUSHi(retval);
2018#endif
a0d0e21e
LW
2019 RETURN;
2020
2021 say_undef:
a79db61d 2022 Safefree(tmpbuf);
a0d0e21e
LW
2023 SP = ORIGMARK;
2024 RETPUSHUNDEF;
2025}
2026
a0d0e21e
LW
2027PP(pp_eof)
2028{
27da23d5 2029 dVAR; dSP;
a0d0e21e 2030 GV *gv;
32e65323 2031 IO *io;
a5e1d062 2032 const MAGIC *mg;
bc0c81ca
NC
2033 /*
2034 * in Perl 5.12 and later, the additional parameter is a bitmask:
2035 * 0 = eof
2036 * 1 = eof(FH)
2037 * 2 = eof() <- ARGV magic
2038 *
2039 * I'll rely on the compiler's trace flow analysis to decide whether to
2040 * actually assign this out here, or punt it into the only block where it is
2041 * used. Doing it out here is DRY on the condition logic.
2042 */
2043 unsigned int which;
a0d0e21e 2044
bc0c81ca 2045 if (MAXARG) {
32e65323 2046 gv = PL_last_in_gv = MUTABLE_GV(POPs); /* eof(FH) */
bc0c81ca
NC
2047 which = 1;
2048 }
b5f55170
NC
2049 else {
2050 EXTEND(SP, 1);
2051
bc0c81ca 2052 if (PL_op->op_flags & OPf_SPECIAL) {
b5f55170 2053 gv = PL_last_in_gv = GvEGVx(PL_argvgv); /* eof() - ARGV magic */
bc0c81ca
NC
2054 which = 2;
2055 }
2056 else {
b5f55170 2057 gv = PL_last_in_gv; /* eof */
bc0c81ca
NC
2058 which = 0;
2059 }
b5f55170 2060 }
32e65323
CS
2061
2062 if (!gv)
2063 RETPUSHNO;
2064
2065 if ((io = GvIO(gv)) && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) {
d682515d 2066 return tied_method1("EOF", SP, MUTABLE_SV(io), mg, newSVuv(which));
146174a9 2067 }
4592e6ca 2068
32e65323
CS
2069 if (!MAXARG && (PL_op->op_flags & OPf_SPECIAL)) { /* eof() */
2070 if (io && !IoIFP(io)) {
2071 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
2072 IoLINES(io) = 0;
2073 IoFLAGS(io) &= ~IOf_START;
2074 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, NULL);
2075 if (GvSV(gv))
2076 sv_setpvs(GvSV(gv), "-");
2077 else
2078 GvSV(gv) = newSVpvs("-");
2079 SvSETMAGIC(GvSV(gv));
2080 }
2081 else if (!nextargv(gv))
2082 RETPUSHYES;
6136c704 2083 }
4592e6ca
NIS
2084 }
2085
32e65323 2086 PUSHs(boolSV(do_eof(gv)));
a0d0e21e
LW
2087 RETURN;
2088}
2089
2090PP(pp_tell)
2091{
27da23d5 2092 dVAR; dSP; dTARGET;
301e8125 2093 GV *gv;
5b468f54 2094 IO *io;
a0d0e21e 2095
b64a1294 2096 if (MAXARG != 0 && (TOPs || POPs))
159b6efe 2097 PL_last_in_gv = MUTABLE_GV(POPs);
ac3697cd
NC
2098 else
2099 EXTEND(SP, 1);
c4420975 2100 gv = PL_last_in_gv;
4592e6ca 2101
9c9f25b8
NC
2102 io = GvIO(gv);
2103 if (io) {
a5e1d062 2104 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2105 if (mg) {
d682515d 2106 return tied_method0("TELL", SP, MUTABLE_SV(io), mg);
a79db61d 2107 }
4592e6ca 2108 }
f4817f32 2109 else if (!gv) {
f03173f2
RGS
2110 if (!errno)
2111 SETERRNO(EBADF,RMS_IFI);
2112 PUSHi(-1);
2113 RETURN;
2114 }
4592e6ca 2115
146174a9
CB
2116#if LSEEKSIZE > IVSIZE
2117 PUSHn( do_tell(gv) );
2118#else
a0d0e21e 2119 PUSHi( do_tell(gv) );
146174a9 2120#endif
a0d0e21e
LW
2121 RETURN;
2122}
2123
137443ea
PP
2124PP(pp_sysseek)
2125{
27da23d5 2126 dVAR; dSP;
1df70142 2127 const int whence = POPi;
146174a9 2128#if LSEEKSIZE > IVSIZE
7452cf6a 2129 const Off_t offset = (Off_t)SvNVx(POPs);
146174a9 2130#else
7452cf6a 2131 const Off_t offset = (Off_t)SvIVx(POPs);
146174a9 2132#endif
a0d0e21e 2133
159b6efe 2134 GV * const gv = PL_last_in_gv = MUTABLE_GV(POPs);
9c9f25b8 2135 IO *const io = GvIO(gv);
4592e6ca 2136
9c9f25b8 2137 if (io) {
a5e1d062 2138 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2139 if (mg) {
cb50131a 2140#if LSEEKSIZE > IVSIZE
74f0b550 2141 SV *const offset_sv = newSVnv((NV) offset);
cb50131a 2142#else
74f0b550 2143 SV *const offset_sv = newSViv(offset);
cb50131a 2144#endif
bc0c81ca 2145
d682515d
NC
2146 return tied_method2("SEEK", SP, MUTABLE_SV(io), mg, offset_sv,
2147 newSViv(whence));
a79db61d 2148 }
4592e6ca
NIS
2149 }
2150
533c011a 2151 if (PL_op->op_type == OP_SEEK)
8903cb82
PP
2152 PUSHs(boolSV(do_seek(gv, offset, whence)));
2153 else {
0bcc34c2 2154 const Off_t sought = do_sysseek(gv, offset, whence);
b448e4fe 2155 if (sought < 0)
146174a9
CB
2156 PUSHs(&PL_sv_undef);
2157 else {
7452cf6a 2158 SV* const sv = sought ?
146174a9 2159#if LSEEKSIZE > IVSIZE
b448e4fe 2160 newSVnv((NV)sought)
146174a9 2161#else
b448e4fe 2162 newSViv(sought)
146174a9
CB
2163#endif
2164 : newSVpvn(zero_but_true, ZBTLEN);
6e449a3a 2165 mPUSHs(sv);
146174a9 2166 }
8903cb82 2167 }
a0d0e21e
LW
2168 RETURN;
2169}
2170
2171PP(pp_truncate)
2172{
97aff369 2173 dVAR;
39644a26 2174 dSP;
8c99d73e
GS
2175 /* There seems to be no consensus on the length type of truncate()
2176 * and ftruncate(), both off_t and size_t have supporters. In
2177 * general one would think that when using large files, off_t is
2178 * at least as wide as size_t, so using an off_t should be okay. */
2179 /* XXX Configure probe for the length type of *truncate() needed XXX */
0bcc34c2 2180 Off_t len;
a0d0e21e 2181
25342a55 2182#if Off_t_size > IVSIZE
0bcc34c2 2183 len = (Off_t)POPn;
8c99d73e 2184#else
0bcc34c2 2185 len = (Off_t)POPi;
8c99d73e
GS
2186#endif
2187 /* Checking for length < 0 is problematic as the type might or
301e8125 2188 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 2189 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2190 SETERRNO(0,0);
d05c1ba0 2191 {
5e0adc2d 2192 SV * const sv = POPs;
d05c1ba0
JH
2193 int result = 1;
2194 GV *tmpgv;
090bf15b
SR
2195 IO *io;
2196
5e0adc2d
FC
2197 if ((tmpgv = PL_op->op_flags & OPf_SPECIAL
2198 ? gv_fetchsv(sv, 0, SVt_PVIO)
2199 : MAYBE_DEREF_GV(sv) )) {
9c9f25b8
NC
2200 io = GvIO(tmpgv);
2201 if (!io)
090bf15b 2202 result = 0;
d05c1ba0 2203 else {
090bf15b 2204 PerlIO *fp;
090bf15b
SR
2205 do_ftruncate_io:
2206 TAINT_PROPER("truncate");
2207 if (!(fp = IoIFP(io))) {
2208 result = 0;
2209 }
2210 else {
2211 PerlIO_flush(fp);
cbdc8872 2212#ifdef HAS_TRUNCATE
090bf15b 2213 if (ftruncate(PerlIO_fileno(fp), len) < 0)
301e8125 2214#else
090bf15b 2215 if (my_chsize(PerlIO_fileno(fp), len) < 0)
cbdc8872 2216#endif
090bf15b
SR
2217 result = 0;
2218 }
d05c1ba0 2219 }
cbdc8872 2220 }
5e0adc2d 2221 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2222 io = MUTABLE_IO(SvRV(sv)); /* *main::FRED{IO} for example */
090bf15b 2223 goto do_ftruncate_io;
5e0adc2d
FC
2224 }
2225 else {
2226 const char * const name = SvPV_nomg_const_nolen(sv);
d05c1ba0 2227 TAINT_PROPER("truncate");
cbdc8872 2228#ifdef HAS_TRUNCATE
d05c1ba0
JH
2229 if (truncate(name, len) < 0)
2230 result = 0;
cbdc8872 2231#else
d05c1ba0 2232 {
7452cf6a 2233 const int tmpfd = PerlLIO_open(name, O_RDWR);
d05c1ba0 2234
7452cf6a 2235 if (tmpfd < 0)
cbdc8872 2236 result = 0;
d05c1ba0
JH
2237 else {
2238 if (my_chsize(tmpfd, len) < 0)
2239 result = 0;
2240 PerlLIO_close(tmpfd);
2241 }
cbdc8872 2242 }
a0d0e21e 2243#endif
d05c1ba0 2244 }
a0d0e21e 2245
d05c1ba0
JH
2246 if (result)
2247 RETPUSHYES;
2248 if (!errno)
93189314 2249 SETERRNO(EBADF,RMS_IFI);
d05c1ba0
JH
2250 RETPUSHUNDEF;
2251 }
a0d0e21e
LW
2252}
2253
a0d0e21e
LW
2254PP(pp_ioctl)
2255{
97aff369 2256 dVAR; dSP; dTARGET;
7452cf6a 2257 SV * const argsv = POPs;
1df70142 2258 const unsigned int func = POPu;
e1ec3a88 2259 const int optype = PL_op->op_type;
159b6efe 2260 GV * const gv = MUTABLE_GV(POPs);
4608196e 2261 IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2262 char *s;
324aa91a 2263 IV retval;
a0d0e21e 2264
748a9306 2265 if (!io || !argsv || !IoIFP(io)) {
51087808 2266 report_evil_fh(gv);
93189314 2267 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
a0d0e21e
LW
2268 RETPUSHUNDEF;
2269 }
2270
748a9306 2271 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2272 STRLEN len;
324aa91a 2273 STRLEN need;
748a9306 2274 s = SvPV_force(argsv, len);
324aa91a
HF
2275 need = IOCPARM_LEN(func);
2276 if (len < need) {
2277 s = Sv_Grow(argsv, need + 1);
2278 SvCUR_set(argsv, need);
a0d0e21e
LW
2279 }
2280
748a9306 2281 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW
2282 }
2283 else {
748a9306 2284 retval = SvIV(argsv);
c529f79d 2285 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW
2286 }
2287
ed4b2e6b 2288 TAINT_PROPER(PL_op_desc[optype]);
a0d0e21e
LW
2289
2290 if (optype == OP_IOCTL)
2291#ifdef HAS_IOCTL
76e3520e 2292 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2293#else
cea2e8a9 2294 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW
2295#endif
2296 else
c214f4ad
B
2297#ifndef HAS_FCNTL
2298 DIE(aTHX_ "fcntl is not implemented");
2299#else
55497cff 2300#if defined(OS2) && defined(__EMX__)
760ac839 2301 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2302#else
760ac839 2303 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2304#endif
6652bd42 2305#endif
a0d0e21e 2306
6652bd42 2307#if defined(HAS_IOCTL) || defined(HAS_FCNTL)
748a9306
LW
2308 if (SvPOK(argsv)) {
2309 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2310 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
53e06cf0 2311 OP_NAME(PL_op));
748a9306
LW
2312 s[SvCUR(argsv)] = 0; /* put our null back */
2313 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW
2314 }
2315
2316 if (retval == -1)
2317 RETPUSHUNDEF;
2318 if (retval != 0) {
2319 PUSHi(retval);
2320 }
2321 else {
8903cb82 2322 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e 2323 }
4808266b 2324#endif
c214f4ad 2325 RETURN;
a0d0e21e
LW
2326}
2327
2328PP(pp_flock)
2329{
9cad6237 2330#ifdef FLOCK
97aff369 2331 dVAR; dSP; dTARGET;
a0d0e21e 2332 I32 value;
7452cf6a 2333 const int argtype = POPi;
159b6efe 2334 GV * const gv = (MAXARG == 0) ? PL_last_in_gv : MUTABLE_GV(POPs);
9c9f25b8
NC
2335 IO *const io = GvIO(gv);
2336 PerlIO *const fp = io ? IoIFP(io) : NULL;
16d20bd9 2337
0bcc34c2 2338 /* XXX Looks to me like io is always NULL at this point */
a0d0e21e 2339 if (fp) {
68dc0745 2340 (void)PerlIO_flush(fp);
76e3520e 2341 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2342 }
cb50131a 2343 else {
51087808 2344 report_evil_fh(gv);
a0d0e21e 2345 value = 0;
93189314 2346 SETERRNO(EBADF,RMS_IFI);
cb50131a 2347 }
a0d0e21e
LW
2348 PUSHi(value);
2349 RETURN;
2350#else
cea2e8a9 2351 DIE(aTHX_ PL_no_func, "flock()");
a0d0e21e
LW
2352#endif
2353}
2354
2355/* Sockets. */
2356
7627e6d0
NC
2357#ifdef HAS_SOCKET
2358
a0d0e21e
LW
2359PP(pp_socket)
2360{
97aff369 2361 dVAR; dSP;
7452cf6a
AL
2362 const int protocol = POPi;
2363 const int type = POPi;
2364 const int domain = POPi;
159b6efe 2365 GV * const gv = MUTABLE_GV(POPs);
7452cf6a 2366 register IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e
LW
2367 int fd;
2368
9c9f25b8 2369 if (!io) {
51087808 2370 report_evil_fh(gv);
5ee74a84 2371 if (io && IoIFP(io))
c289d2f7 2372 do_close(gv, FALSE);
93189314 2373 SETERRNO(EBADF,LIB_INVARG);
a0d0e21e
LW
2374 RETPUSHUNDEF;
2375 }
2376
57171420
BS
2377 if (IoIFP(io))
2378 do_close(gv, FALSE);
2379
a0d0e21e 2380 TAINT_PROPER("socket");
6ad3d225 2381 fd = PerlSock_socket(domain, type, protocol);
a0d0e21e
LW
2382 if (fd < 0)
2383 RETPUSHUNDEF;
460c8493
IZ
2384 IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2385 IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2386 IoTYPE(io) = IoTYPE_SOCKET;
a0d0e21e 2387 if (!IoIFP(io) || !IoOFP(io)) {
760ac839
LW
2388 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2389 if (IoOFP(io)) PerlIO_close(IoOFP(io));
6ad3d225 2390 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
a0d0e21e
LW
2391 RETPUSHUNDEF;
2392 }
8d2a6795
GS
2393#if defined(HAS_FCNTL) && defined(F_SETFD)
2394 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2395#endif
a0d0e21e 2396
d5ff79b3
OF
2397#ifdef EPOC
2398 setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
2399#endif
2400
a0d0e21e 2401 RETPUSHYES;
a0d0e21e 2402}
7627e6d0 2403#endif
a0d0e21e
LW
2404
2405PP(pp_sockpair)
2406{
c95c94b1 2407#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
97aff369 2408 dVAR; dSP;
7452cf6a
AL
2409 const int protocol = POPi;
2410 const int type = POPi;
2411 const int domain = POPi;
159b6efe
NC
2412 GV * const gv2 = MUTABLE_GV(POPs);
2413 GV * const gv1 = MUTABLE_GV(POPs);
7452cf6a
AL
2414 register IO * const io1 = gv1 ? GvIOn(gv1) : NULL;
2415 register IO * const io2 = gv2 ? GvIOn(gv2) : NULL;
a0d0e21e
LW
2416 int fd[2];
2417
9c9f25b8
NC
2418 if (!io1)
2419 report_evil_fh(gv1);
2420 if (!io2)
2421 report_evil_fh(gv2);
a0d0e21e 2422
46d2cc54 2423 if (io1 && IoIFP(io1))
dc0d0a5f 2424 do_close(gv1, FALSE);
46d2cc54 2425 if (io2 && IoIFP(io2))
dc0d0a5f 2426 do_close(gv2, FALSE);
57171420 2427
46d2cc54
NC
2428 if (!io1 || !io2)
2429 RETPUSHUNDEF;
2430
a0d0e21e 2431 TAINT_PROPER("socketpair");
6ad3d225 2432 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
a0d0e21e 2433 RETPUSHUNDEF;
460c8493
IZ
2434 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2435 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
50952442 2436 IoTYPE(io1) = IoTYPE_SOCKET;
460c8493
IZ
2437 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2438 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
50952442 2439 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2440 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW
2441 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2442 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2443 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW
2444 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2445 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2446 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW
2447 RETPUSHUNDEF;
2448 }
8d2a6795
GS
2449#if defined(HAS_FCNTL) && defined(F_SETFD)
2450 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2451 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2452#endif
a0d0e21e
LW
2453
2454 RETPUSHYES;
2455#else
cea2e8a9 2456 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW
2457#endif
2458}
2459
7627e6d0
NC
2460#ifdef HAS_SOCKET
2461
a0d0e21e
LW
2462PP(pp_bind)
2463{
97aff369 2464 dVAR; dSP;
7452cf6a 2465 SV * const addrsv = POPs;
349d4f2f
NC
2466 /* OK, so on what platform does bind modify addr? */
2467 const char *addr;
159b6efe 2468 GV * const gv = MUTABLE_GV(POPs);
7452cf6a 2469 register IO * const io = GvIOn(gv);
a0d0e21e 2470 STRLEN len;
32b81f04 2471 const int op_type = PL_op->op_type;
a0d0e21e
LW
2472
2473 if (!io || !IoIFP(io))
2474 goto nuts;
2475
349d4f2f 2476 addr = SvPV_const(addrsv, len);
32b81f04
NC
2477 TAINT_PROPER(PL_op_desc[op_type]);
2478 if ((op_type == OP_BIND
2479 ? PerlSock_bind(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len)
2480 : PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len))
2481 >= 0)
a0d0e21e
LW
2482 RETPUSHYES;
2483 else
2484 RETPUSHUNDEF;
2485
2486nuts:
fbcda526 2487 report_evil_fh(gv);
93189314 2488 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2489 RETPUSHUNDEF;
a0d0e21e
LW
2490}
2491
2492PP(pp_listen)
2493{
97aff369 2494 dVAR; dSP;
7452cf6a 2495 const int backlog = POPi;
159b6efe 2496 GV * const gv = MUTABLE_GV(POPs);
7452cf6a 2497 register IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2498
9c9f25b8 2499 if (!io || !IoIFP(io))
a0d0e21e
LW
2500 goto nuts;
2501
6ad3d225 2502 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW
2503 RETPUSHYES;
2504 else
2505 RETPUSHUNDEF;
2506
2507nuts:
fbcda526 2508 report_evil_fh(gv);
93189314 2509 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2510 RETPUSHUNDEF;
a0d0e21e
LW
2511}
2512
2513PP(pp_accept)
2514{
97aff369 2515 dVAR; dSP; dTARGET;
a0d0e21e
LW
2516 register IO *nstio;
2517 register IO *gstio;
93d47a36
JH
2518 char namebuf[MAXPATHLEN];
2519#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
2520 Sock_size_t len = sizeof (struct sockaddr_in);
2521#else
2522 Sock_size_t len = sizeof namebuf;
2523#endif
159b6efe
NC
2524 GV * const ggv = MUTABLE_GV(POPs);
2525 GV * const ngv = MUTABLE_GV(POPs);
a0d0e21e
LW
2526 int fd;
2527
a0d0e21e
LW
2528 if (!ngv)
2529 goto badexit;
2530 if (!ggv)
2531 goto nuts;
2532
2533 gstio = GvIO(ggv);
2534 if (!gstio || !IoIFP(gstio))
2535 goto nuts;
2536
2537 nstio = GvIOn(ngv);
93d47a36 2538 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
e294cc5d
JH
2539#if defined(OEMVS)
2540 if (len == 0) {
2541 /* Some platforms indicate zero length when an AF_UNIX client is
2542 * not bound. Simulate a non-zero-length sockaddr structure in
2543 * this case. */
2544 namebuf[0] = 0; /* sun_len */
2545 namebuf[1] = AF_UNIX; /* sun_family */
2546 len = 2;
2547 }
2548#endif
2549
a0d0e21e
LW
2550 if (fd < 0)
2551 goto badexit;
a70048fb
AB
2552 if (IoIFP(nstio))
2553 do_close(ngv, FALSE);
460c8493
IZ
2554 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2555 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2556 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2557 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW
2558 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2559 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2560 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW
2561 goto badexit;
2562 }
8d2a6795
GS
2563#if defined(HAS_FCNTL) && defined(F_SETFD)
2564 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2565#endif
a0d0e21e 2566
ed79a026 2567#ifdef EPOC
93d47a36 2568 len = sizeof (struct sockaddr_in); /* EPOC somehow truncates info */
a9f1f6b0 2569 setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
ed79a026 2570#endif
381c1bae 2571#ifdef __SCO_VERSION__
93d47a36 2572 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
381c1bae 2573#endif
ed79a026 2574
93d47a36 2575 PUSHp(namebuf, len);
a0d0e21e
LW
2576 RETURN;
2577
2578nuts:
fbcda526 2579 report_evil_fh(ggv);
93189314 2580 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW
2581
2582badexit:
2583 RETPUSHUNDEF;
2584
a0d0e21e
LW
2585}
2586
2587PP(pp_shutdown)
2588{
97aff369 2589 dVAR; dSP; dTARGET;
7452cf6a 2590 const int how = POPi;
159b6efe 2591 GV * const gv = MUTABLE_GV(POPs);
7452cf6a 2592 register IO * const io = GvIOn(gv);
a0d0e21e
LW
2593
2594 if (!io || !IoIFP(io))
2595 goto nuts;
2596
6ad3d225 2597 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW
2598 RETURN;
2599
2600nuts:
fbcda526 2601 report_evil_fh(gv);
93189314 2602 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2603 RETPUSHUNDEF;
a0d0e21e
LW
2604}
2605
a0d0e21e
LW
2606PP(pp_ssockopt)
2607{
97aff369 2608 dVAR; dSP;
7452cf6a 2609 const int optype = PL_op->op_type;
561b68a9 2610 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
7452cf6a
AL
2611 const unsigned int optname = (unsigned int) POPi;
2612 const unsigned int lvl = (unsigned int) POPi;
159b6efe 2613 GV * const gv = MUTABLE_GV(POPs);
7452cf6a 2614 register IO * const io = GvIOn(gv);
a0d0e21e 2615 int fd;
1e422769 2616 Sock_size_t len;
a0d0e21e 2617
a0d0e21e
LW
2618 if (!io || !IoIFP(io))
2619 goto nuts;
2620
760ac839 2621 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW
2622 switch (optype) {
2623 case OP_GSOCKOPT:
748a9306 2624 SvGROW(sv, 257);
a0d0e21e 2625 (void)SvPOK_only(sv);
748a9306
LW
2626 SvCUR_set(sv,256);
2627 *SvEND(sv) ='\0';
1e422769 2628 len = SvCUR(sv);
6ad3d225 2629 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2630 goto nuts2;
1e422769 2631 SvCUR_set(sv, len);
748a9306 2632 *SvEND(sv) ='\0';
a0d0e21e
LW
2633 PUSHs(sv);
2634 break;
2635 case OP_SSOCKOPT: {
1215b447
JH
2636#if defined(__SYMBIAN32__)
2637# define SETSOCKOPT_OPTION_VALUE_T void *
2638#else
2639# define SETSOCKOPT_OPTION_VALUE_T const char *
2640#endif
2641 /* XXX TODO: We need to have a proper type (a Configure probe,
2642 * etc.) for what the C headers think of the third argument of
2643 * setsockopt(), the option_value read-only buffer: is it
2644 * a "char *", or a "void *", const or not. Some compilers
2645 * don't take kindly to e.g. assuming that "char *" implicitly
2646 * promotes to a "void *", or to explicitly promoting/demoting
2647 * consts to non/vice versa. The "const void *" is the SUS
2648 * definition, but that does not fly everywhere for the above
2649 * reasons. */
2650 SETSOCKOPT_OPTION_VALUE_T buf;
1e422769
PP
2651 int aint;
2652 if (SvPOKp(sv)) {
2d8e6c8d 2653 STRLEN l;
1215b447 2654 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2d8e6c8d 2655 len = l;
1e422769 2656 }
56ee1660 2657 else {
a0d0e21e 2658 aint = (int)SvIV(sv);
1215b447 2659 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
a0d0e21e
LW
2660 len = sizeof(int);
2661 }
6ad3d225 2662 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2663 goto nuts2;
3280af22 2664 PUSHs(&PL_sv_yes);
a0d0e21e
LW
2665 }
2666 break;
2667 }
2668 RETURN;
2669
2670nuts:
fbcda526 2671 report_evil_fh(gv);
93189314 2672 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW
2673nuts2:
2674 RETPUSHUNDEF;
2675
a0d0e21e
LW
2676}
2677
a0d0e21e
LW
2678PP(pp_getpeername)
2679{
97aff369 2680 dVAR; dSP;
7452cf6a 2681 const int optype = PL_op->op_type;
159b6efe 2682 GV * const gv = MUTABLE_GV(POPs);
7452cf6a
AL
2683 register IO * const io = GvIOn(gv);
2684 Sock_size_t len;
a0d0e21e
LW
2685 SV *sv;
2686 int fd;
a0d0e21e
LW
2687
2688 if (!io || !IoIFP(io))
2689 goto nuts;
2690
561b68a9 2691 sv = sv_2mortal(newSV(257));
748a9306 2692 (void)SvPOK_only(sv);
1e422769
PP
2693 len = 256;
2694 SvCUR_set(sv, len);
748a9306 2695 *SvEND(sv) ='\0';
760ac839 2696 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW
2697 switch (optype) {
2698 case OP_GETSOCKNAME:
6ad3d225 2699 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW
2700 goto nuts2;
2701 break;
2702 case OP_GETPEERNAME:
6ad3d225 2703 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2704 goto nuts2;
490ab354
JH
2705#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2706 {
2707 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";
2708 /* If the call succeeded, make sure we don't have a zeroed port/addr */
349d4f2f 2709 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2fbb330f 2710 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
490ab354 2711 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2712 goto nuts2;
490ab354
JH
2713 }
2714 }
2715#endif
a0d0e21e
LW
2716 break;
2717 }
13826f2c
CS
2718#ifdef BOGUS_GETNAME_RETURN
2719 /* Interactive Unix, getpeername() and getsockname()
2720 does not return valid namelen */
1e422769
PP
2721 if (len == BOGUS_GETNAME_RETURN)
2722 len = sizeof(struct sockaddr);
13826f2c 2723#endif
1e422769 2724 SvCUR_set(sv, len);
748a9306 2725 *SvEND(sv) ='\0';
a0d0e21e
LW
2726 PUSHs(sv);
2727 RETURN;
2728
2729nuts:
fbcda526 2730 report_evil_fh(gv);
93189314 2731 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW
2732nuts2:
2733 RETPUSHUNDEF;
7627e6d0 2734}
a0d0e21e 2735
a0d0e21e 2736#endif
a0d0e21e
LW
2737
2738/* Stat calls. */
2739
a0d0e21e
LW
2740PP(pp_stat)
2741{
97aff369 2742 dVAR;
39644a26 2743 dSP;
10edeb5d 2744 GV *gv = NULL;
ad02613c 2745 IO *io;
54310121 2746 I32 gimme;
a0d0e21e 2747 I32 max = 13;
109c43ed 2748 SV* sv;
a0d0e21e 2749
109c43ed
FC
2750 if (PL_op->op_flags & OPf_REF ? (gv = cGVOP_gv, 1)
2751 : !!(sv=POPs, gv = MAYBE_DEREF_GV(sv))) {
8a4e5b40 2752 if (PL_op->op_type == OP_LSTAT) {
5d3e98de 2753 if (gv != PL_defgv) {
5d329e6e 2754 do_fstat_warning_check:
a2a5de95 2755 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
bf29d05f
BF
2756 "lstat() on filehandle %"SVf, SVfARG(gv
2757 ? sv_2mortal(newSVhek(GvENAME_HEK(gv)))
2758 : &PL_sv_no));
5d3e98de 2759 } else if (PL_laststype != OP_LSTAT)
b042df57 2760 /* diag_listed_as: The stat preceding %s wasn't an lstat */
8a4e5b40 2761 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
8a4e5b40
DD
2762 }
2763
2dd78f96 2764 if (gv != PL_defgv) {
3280af22 2765 PL_laststype = OP_STAT;
2dd78f96 2766 PL_statgv = gv;
76f68e9b 2767 sv_setpvs(PL_statname, "");
5228a96c 2768 if(gv) {
ad02613c
SP
2769 io = GvIO(gv);
2770 do_fstat_have_io:
5228a96c
SP
2771 if (io) {
2772 if (IoIFP(io)) {
2773 PL_laststatval =
2774 PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
2775 } else if (IoDIRP(io)) {
5228a96c 2776 PL_laststatval =
3497a01f 2777 PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache);
5228a96c
SP
2778 } else {
2779 PL_laststatval = -1;
2780 }
2781 }
2782 }
2783 }
2784
9ddeeac9 2785 if (PL_laststatval < 0) {
51087808 2786 report_evil_fh(gv);
a0d0e21e 2787 max = 0;
9ddeeac9 2788 }
a0d0e21e
LW
2789 }
2790 else {
109c43ed 2791 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2792 io = MUTABLE_IO(SvRV(sv));
ad02613c
SP
2793 if (PL_op->op_type == OP_LSTAT)
2794 goto do_fstat_warning_check;
2795 goto do_fstat_have_io;
2796 }
2797
109c43ed 2798 sv_setpv(PL_statname, SvPV_nomg_const_nolen(sv));
a0714e2c 2799 PL_statgv = NULL;
533c011a
NIS
2800 PL_laststype = PL_op->op_type;
2801 if (PL_op->op_type == OP_LSTAT)
0510663f 2802 PL_laststatval = PerlLIO_lstat(SvPV_nolen_const(PL_statname), &PL_statcache);
a0d0e21e 2803 else
0510663f 2804 PL_laststatval = PerlLIO_stat(SvPV_nolen_const(PL_statname), &PL_statcache);
3280af22 2805 if (PL_laststatval < 0) {
0510663f 2806 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname), '\n'))
9014280d 2807 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
a0d0e21e
LW
2808 max = 0;
2809 }
2810 }
2811
54310121
PP
2812 gimme = GIMME_V;
2813 if (gimme != G_ARRAY) {
2814 if (gimme != G_VOID)
2815 XPUSHs(boolSV(max));
2816 RETURN;
a0d0e21e
LW
2817 }
2818 if (max) {
36477c24
PP
2819 EXTEND(SP, max);
2820 EXTEND_MORTAL(max);
6e449a3a 2821 mPUSHi(PL_statcache.st_dev);
8d8cba88
TC
2822#if ST_INO_SIZE > IVSIZE
2823 mPUSHn(PL_statcache.st_ino);
2824#else
2825# if ST_INO_SIGN <= 0
6e449a3a 2826 mPUSHi(PL_statcache.st_ino);
8d8cba88
TC
2827# else
2828 mPUSHu(PL_statcache.st_ino);
2829# endif
2830#endif
6e449a3a
MHM
2831 mPUSHu(PL_statcache.st_mode);
2832 mPUSHu(PL_statcache.st_nlink);
146174a9 2833#if Uid_t_size > IVSIZE
6e449a3a 2834 mPUSHn(PL_statcache.st_uid);
146174a9 2835#else
23dcd6c8 2836# if Uid_t_sign <= 0
6e449a3a 2837 mPUSHi(PL_statcache.st_uid);
23dcd6c8 2838# else
6e449a3a 2839 mPUSHu(PL_statcache.st_uid);
23dcd6c8 2840# endif
146174a9 2841#endif
301e8125 2842#if Gid_t_size > IVSIZE
6e449a3a 2843 mPUSHn(PL_statcache.st_gid);
146174a9 2844#else
23dcd6c8 2845# if Gid_t_sign <= 0
6e449a3a 2846 mPUSHi(PL_statcache.st_gid);
23dcd6c8 2847# else
6e449a3a 2848 mPUSHu(PL_statcache.st_gid);
23dcd6c8 2849# endif
146174a9 2850#endif
cbdc8872 2851#ifdef USE_STAT_RDEV
6e449a3a 2852 mPUSHi(PL_statcache.st_rdev);
cbdc8872 2853#else
84bafc02 2854 PUSHs(newSVpvs_flags("", SVs_TEMP));
cbdc8872 2855#endif
146174a9 2856#if Off_t_size > IVSIZE
6e449a3a 2857 mPUSHn(PL_statcache.st_size);
146174a9 2858#else
6e449a3a 2859 mPUSHi(PL_statcache.st_size);
146174a9 2860#endif
cbdc8872 2861#ifdef BIG_TIME
6e449a3a
MHM
2862 mPUSHn(PL_statcache.st_atime);
2863 mPUSHn(PL_statcache.st_mtime);
2864 mPUSHn(PL_statcache.st_ctime);
cbdc8872 2865#else
6e449a3a
MHM
2866 mPUSHi(PL_statcache.st_atime);
2867 mPUSHi(PL_statcache.st_mtime);
2868 mPUSHi(PL_statcache.st_ctime);
cbdc8872 2869#endif
a0d0e21e 2870#ifdef USE_STAT_BLOCKS
6e449a3a
MHM
2871 mPUSHu(PL_statcache.st_blksize);
2872 mPUSHu(PL_statcache.st_blocks);
a0d0e21e 2873#else
84bafc02
NC
2874 PUSHs(newSVpvs_flags("", SVs_TEMP));
2875 PUSHs(newSVpvs_flags("", SVs_TEMP));
a0d0e21e
LW
2876#endif
2877 }
2878 RETURN;
2879}
2880
6f1401dc
DM
2881#define tryAMAGICftest_MG(chr) STMT_START { \
2882 if ( (SvFLAGS(TOPs) & (SVf_ROK|SVs_GMG)) \
49498caf 2883 && PL_op->op_flags & OPf_KIDS \
6f1401dc
DM
2884 && S_try_amagic_ftest(aTHX_ chr)) \
2885 return NORMAL; \
2886 } STMT_END
2887
2888STATIC bool
2889S_try_amagic_ftest(pTHX_ char chr) {
2890 dVAR;
2891 dSP;
2892 SV* const arg = TOPs;
2893
2894 assert(chr != '?');
2895 SvGETMAGIC(arg);
2896
49498caf 2897 if (SvAMAGIC(TOPs))
6f1401dc
DM
2898 {
2899 const char tmpchr = chr;
6f1401dc
DM
2900 SV * const tmpsv = amagic_call(arg,
2901 newSVpvn_flags(&tmpchr, 1, SVs_TEMP),
2902 ftest_amg, AMGf_unary);
2903
2904 if (!tmpsv)
2905 return FALSE;
2906
2907 SPAGAIN;
2908
bbd91306 2909 if (PL_op->op_private & OPpFT_STACKING) {
6f1401dc
DM
2910 if (SvTRUE(tmpsv))
2911 /* leave the object alone */
2912 return TRUE;
2913 }
2914
2915 SETs(tmpsv);
2916 PUTBACK;
2917 return TRUE;
2918 }
2919 return FALSE;
2920}
2921
2922
fbb0b3b3
RGS
2923/* This macro is used by the stacked filetest operators :
2924 * if the previous filetest failed, short-circuit and pass its value.
2925 * Else, discard it from the stack and continue. --rgs
2926 */
2927#define STACKED_FTEST_CHECK if (PL_op->op_private & OPpFT_STACKED) { \
d724f706 2928 if (!SvTRUE(TOPs)) { RETURN; } \
fbb0b3b3
RGS
2929 else { (void)POPs; PUTBACK; } \
2930 }
2931
a0d0e21e
LW
2932PP(pp_ftrread)
2933{
97aff369 2934 dVAR;
9cad6237 2935 I32 result;
af9e49b4
NC
2936 /* Not const, because things tweak this below. Not bool, because there's
2937 no guarantee that OPp_FT_ACCESS is <= CHAR_MAX */
2938#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2939 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
2940 /* Giving some sort of initial value silences compilers. */
2941# ifdef R_OK
2942 int access_mode = R_OK;
2943# else
2944 int access_mode = 0;
2945# endif
5ff3f7a4 2946#else
af9e49b4
NC
2947 /* access_mode is never used, but leaving use_access in makes the
2948 conditional compiling below much clearer. */
2949 I32 use_access = 0;
5ff3f7a4 2950#endif
2dcac756 2951 Mode_t stat_mode = S_IRUSR;
a0d0e21e 2952
af9e49b4 2953 bool effective = FALSE;
07fe7c6a 2954 char opchar = '?';
2a3ff820 2955 dSP;
af9e49b4 2956
7fb13887
BM
2957 switch (PL_op->op_type) {
2958 case OP_FTRREAD: opchar = 'R'; break;
2959 case OP_FTRWRITE: opchar = 'W'; break;
2960 case OP_FTREXEC: opchar = 'X'; break;
2961 case OP_FTEREAD: opchar = 'r'; break;
2962 case OP_FTEWRITE: opchar = 'w'; break;
2963 case OP_FTEEXEC: opchar = 'x'; break;
2964 }
6f1401dc 2965 tryAMAGICftest_MG(opchar);
7fb13887 2966
fbb0b3b3 2967 STACKED_FTEST_CHECK;
af9e49b4
NC
2968
2969 switch (PL_op->op_type) {
2970 case OP_FTRREAD:
2971#if !(defined(HAS_ACCESS) && defined(R_OK))
2972 use_access = 0;
2973#endif
2974 break;
2975
2976 case OP_FTRWRITE:
5ff3f7a4 2977#if defined(HAS_ACCESS) && defined(W_OK)
af9e49b4 2978 access_mode = W_OK;
5ff3f7a4 2979#else
af9e49b4 2980 use_access = 0;
5ff3f7a4 2981#endif
af9e49b4
NC
2982 stat_mode = S_IWUSR;
2983 break;
a0d0e21e 2984
af9e49b4 2985 case OP_FTREXEC:
5ff3f7a4 2986#if defined(HAS_ACCESS) && defined(X_OK)
af9e49b4 2987 access_mode = X_OK;
5ff3f7a4 2988#else
af9e49b4 2989 use_access = 0;
5ff3f7a4 2990#endif
af9e49b4
NC
2991 stat_mode = S_IXUSR;
2992 break;
a0d0e21e 2993
af9e49b4 2994 case OP_FTEWRITE:
faee0e31 2995#ifdef PERL_EFF_ACCESS
af9e49b4 2996 access_mode = W_OK;
5ff3f7a4 2997#endif
af9e49b4 2998 stat_mode = S_IWUSR;
7fb13887 2999 /* fall through */
a0d0e21e 3000
af9e49b4
NC
3001 case OP_FTEREAD:
3002#ifndef PERL_EFF_ACCESS
3003 use_access = 0;
3004#endif
3005 effective = TRUE;
3006 break;
3007
af9e49b4 3008 case OP_FTEEXEC:
faee0e31 3009#ifdef PERL_EFF_ACCESS
b376053d 3010 access_mode = X_OK;
5ff3f7a4 3011#else
af9e49b4 3012 use_access = 0;
5ff3f7a4 3013#endif
af9e49b4
NC
3014 stat_mode = S_IXUSR;
3015 effective = TRUE;
3016 break;
3017 }
a0d0e21e 3018
af9e49b4
NC
3019 if (use_access) {
3020#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2c2f35ab 3021 const char *name = POPpx;
af9e49b4
NC
3022 if (effective) {
3023# ifdef PERL_EFF_ACCESS
3024 result = PERL_EFF_ACCESS(name, access_mode);
3025# else
3026 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
3027 OP_NAME(PL_op));
3028# endif
3029 }
3030 else {
3031# ifdef HAS_ACCESS
3032 result = access(name, access_mode);
3033# else
3034 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
3035# endif
3036 }
5ff3f7a4
GS
3037 if (result == 0)
3038 RETPUSHYES;
3039 if (result < 0)
3040 RETPUSHUNDEF;
3041 RETPUSHNO;
af9e49b4 3042#endif
22865c03 3043 }
af9e49b4 3044
40c852de 3045 result = my_stat_flags(0);
22865c03 3046 SPAGAIN;
a0d0e21e
LW
3047 if (result < 0)
3048 RETPUSHUNDEF;
af9e49b4 3049 if (cando(stat_mode, effective, &PL_statcache))
a0d0e21e
LW
3050 RETPUSHYES;
3051 RETPUSHNO;
3052}
3053
3054PP(pp_ftis)
3055{
97aff369 3056 dVAR;
fbb0b3b3 3057 I32 result;
d7f0a2f4 3058 const int op_type = PL_op->op_type;
07fe7c6a 3059 char opchar = '?';
2a3ff820 3060 dSP;
07fe7c6a
BM
3061
3062 switch (op_type) {
3063 case OP_FTIS: opchar = 'e'; break;
3064 case OP_FTSIZE: opchar = 's'; break;
3065 case OP_FTMTIME: opchar = 'M'; break;
3066 case OP_FTCTIME: opchar = 'C'; break;
3067 case OP_FTATIME: opchar = 'A'; break;
3068 }
6f1401dc 3069 tryAMAGICftest_MG(opchar);
07fe7c6a 3070
fbb0b3b3 3071 STACKED_FTEST_CHECK;
7fb13887 3072
40c852de 3073 result = my_stat_flags(0);
fbb0b3b3 3074 SPAGAIN;
a0d0e21e
LW
3075 if (result < 0)
3076 RETPUSHUNDEF;
d7f0a2f4
NC
3077 if (op_type == OP_FTIS)
3078 RETPUSHYES;
957b0e1d 3079 {
d7f0a2f4
NC
3080 /* You can't dTARGET inside OP_FTIS, because you'll get
3081 "panic: pad_sv po" - the op is not flagged to have a target. */
957b0e1d 3082 dTARGET;
d7f0a2f4 3083 switch (op_type) {
957b0e1d
NC
3084 case OP_FTSIZE:
3085#if Off_t_size > IVSIZE
3086 PUSHn(PL_statcache.st_size);
3087#else
3088 PUSHi(PL_statcache.st_size);
3089#endif
3090 break;
3091 case OP_FTMTIME:
3092 PUSHn( (((NV)PL_basetime - PL_statcache.st_mtime)) / 86400.0 );
3093 break;
3094 case OP_FTATIME:
3095 PUSHn( (((NV)PL_basetime - PL_statcache.st_atime)) / 86400.0 );
3096 break;
3097 case OP_FTCTIME:
3098 PUSHn( (((NV)PL_basetime - PL_statcache.st_ctime)) / 86400.0 );
3099 break;
3100 }
3101 }
3102 RETURN;
a0d0e21e
LW
3103}
3104
a0d0e21e
LW
3105PP(pp_ftrowned)
3106{
97aff369 3107 dVAR;
fbb0b3b3 3108 I32 result;
07fe7c6a 3109 char opchar = '?';
2a3ff820 3110 dSP;
17ad201a 3111
7fb13887
BM
3112 switch (PL_op->op_type) {
3113 case OP_FTROWNED: opchar = 'O'; break;
3114 case OP_FTEOWNED: opchar = 'o'; break;
3115 case OP_FTZERO: opchar = 'z'; break;
3116 case OP_FTSOCK: opchar = 'S'; break;
3117 case OP_FTCHR: opchar = 'c'; break;
3118 case OP_FTBLK: opchar = 'b'; break;
3119 case OP_FTFILE: opchar = 'f'; break;
3120 case OP_FTDIR: opchar = 'd'; break;
3121 case OP_FTPIPE: opchar = 'p'; break;
3122 case OP_FTSUID: opchar = 'u'; break;
3123 case OP_FTSGID: opchar = 'g'; break;
3124 case OP_FTSVTX: opchar = 'k'; break;
3125 }
6f1401dc 3126 tryAMAGICftest_MG(opchar);
7fb13887 3127
1b0124a7
JD
3128 STACKED_FTEST_CHECK;
3129
17ad201a
NC
3130 /* I believe that all these three are likely to be defined on most every
3131 system these days. */
3132#ifndef S_ISUID
c410dd6a 3133 if(PL_op->op_type == OP_FTSUID) {
1b0124a7
JD
3134 if ((PL_op->op_flags & OPf_REF) == 0 && (PL_op->op_private & OPpFT_STACKED) == 0)
3135 (void) POPs;
17ad201a 3136 RETPUSHNO;
c410dd6a 3137 }
17ad201a
NC
3138#endif
3139#ifndef S_ISGID
c410dd6a 3140 if(PL_op->op_type == OP_FTSGID) {
1b0124a7
JD
3141 if ((PL_op->op_flags & OPf_REF) == 0 && (PL_op->op_private & OPpFT_STACKED) == 0)
3142 (void) POPs;
17ad201a 3143 RETPUSHNO;
c410dd6a 3144 }
17ad201a
NC
3145#endif
3146#ifndef S_ISVTX
c410dd6a 3147 if(PL_op->op_type == OP_FTSVTX) {
1b0124a7
JD
3148 if ((PL_op->op_flags & OPf_REF) == 0 && (PL_op->op_private & OPpFT_STACKED) == 0)
3149 (void) POPs;
17ad201a 3150 RETPUSHNO;
c410dd6a 3151 }
17ad201a
NC
3152#endif
3153
40c852de 3154 result = my_stat_flags(0);
fbb0b3b3 3155 SPAGAIN;
a0d0e21e
LW
3156 if (result < 0)
3157 RETPUSHUNDEF;
f1cb2d48
NC
3158 switch (PL_op->op_type) {
3159 case OP_FTROWNED:
9ab9fa88 3160 if (PL_statcache.st_uid == PL_uid)
f1cb2d48
NC
3161 RETPUSHYES;
3162 break;
3163 case OP_FTEOWNED:
3164 if (PL_statcache.st_uid == PL_euid)
3165 RETPUSHYES;
3166 break;
3167 case OP_FTZERO:
3168 if (PL_statcache.st_size == 0)
3169 RETPUSHYES;
3170 break;
3171 case OP_FTSOCK:
3172 if (S_ISSOCK(PL_statcache.st_mode))
3173 RETPUSHYES;
3174 break;
3175 case OP_FTCHR:
3176 if (S_ISCHR(PL_statcache.st_mode))
3177 RETPUSHYES;
3178 break;
3179 case OP_FTBLK:
3180 if (S_ISBLK(PL_statcache.st_mode))
3181 RETPUSHYES;
3182 break;
3183 case OP_FTFILE:
3184 if (S_ISREG(PL_statcache.st_mode))
3185 RETPUSHYES;
3186 break;
3187 case OP_FTDIR:
3188 if (S_ISDIR(PL_statcache.st_mode))
3189 RETPUSHYES;
3190 break;
3191 case OP_FTPIPE:
3192 if (S_ISFIFO(PL_statcache.st_mode))
3193 RETPUSHYES;
3194 break;
a0d0e21e 3195#ifdef S_ISUID
17ad201a
NC
3196 case OP_FTSUID:
3197 if (PL_statcache.st_mode & S_ISUID)
3198 RETPUSHYES;
3199 break;
a0d0e21e 3200#endif
a0d0e21e 3201#ifdef S_ISGID
17ad201a
NC
3202 case OP_FTSGID:
3203 if (PL_statcache.st_mode & S_ISGID)
3204 RETPUSHYES;
3205 break;
3206#endif
3207#ifdef S_ISVTX
3208 case OP_FTSVTX:
3209 if (PL_statcache.st_mode & S_ISVTX)
3210 RETPUSHYES;
3211 break;
a0d0e21e 3212#endif
17ad201a 3213 }
a0d0e21e
LW
3214 RETPUSHNO;
3215}
3216
17ad201a 3217PP(pp_ftlink)
a0d0e21e 3218{
97aff369 3219 dVAR;
39644a26 3220 dSP;
500ff13f 3221 I32 result;
07fe7c6a 3222
6f1401dc 3223 tryAMAGICftest_MG('l');
1f26655e 3224 STACKED_FTEST_CHECK;
40c852de 3225 result = my_lstat_flags(0);
500ff13f
BM
3226 SPAGAIN;
3227
a0d0e21e
LW
3228 if (result < 0)
3229 RETPUSHUNDEF;
17ad201a 3230 if (S_ISLNK(PL_statcache.st_mode))
a0d0e21e 3231 RETPUSHYES;
a0d0e21e
LW
3232 RETPUSHNO;
3233}
3234
3235PP(pp_fttty)
3236{
97aff369 3237 dVAR;
39644a26 3238 dSP;
a0d0e21e
LW
3239 int fd;
3240 GV *gv;
a0714e2c 3241 SV *tmpsv = NULL;
0784aae0 3242 char *name = NULL;
40c852de 3243 STRLEN namelen;
fb73857a 3244
6f1401dc 3245 tryAMAGICftest_MG('t');
07fe7c6a 3246
fbb0b3b3
RGS
3247 STACKED_FTEST_CHECK;
3248
533c011a 3249 if (PL_op->op_flags & OPf_REF)
146174a9 3250 gv = cGVOP_gv;
094a3eec 3251 else if (!(gv = MAYBE_DEREF_GV_nomg(TOPs))) {
40c852de
DM
3252 tmpsv = POPs;
3253 name = SvPV_nomg(tmpsv, namelen);
3254 gv = gv_fetchpvn_flags(name, namelen, SvUTF8(tmpsv), SVt_PVIO);
3255 }
fb73857a 3256
a0d0e21e 3257 if (GvIO(gv) && IoIFP(GvIOp(gv)))
760ac839 3258 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
7a5fd60d 3259 else if (tmpsv && SvOK(tmpsv)) {
40c852de
DM
3260 if (isDIGIT(*name))
3261 fd = atoi(name);
7a5fd60d
NC
3262 else
3263 RETPUSHUNDEF;
3264 }
a0d0e21e
LW
3265 else
3266 RETPUSHUNDEF;
6ad3d225 3267 if (PerlLIO_isatty(fd))
a0d0e21e
LW
3268 RETPUSHYES;
3269 RETPUSHNO;
3270}
3271
16d20bd9
AD
3272#if defined(atarist) /* this will work with atariST. Configure will
3273 make guesses for other systems. */
3274# define FILE_base(f) ((f)->_base)
3275# define FILE_ptr(f) ((f)->_ptr)
3276# define FILE_cnt(f) ((f)->_cnt)
3277# define FILE_bufsiz(f) ((f)->_cnt + ((f)->_ptr - (f)->_base))
a0d0e21e
LW
3278#endif
3279
3280PP(pp_fttext)
3281{
97aff369 3282 dVAR;
39644a26 3283 dSP;
a0d0e21e
LW
3284 I32 i;
3285 I32 len;
3286 I32 odd = 0;
3287 STDCHAR tbuf[512];
3288 register STDCHAR *s;
3289 register IO *io;
5f05dabc
PP
3290 register SV *sv;
3291 GV *gv;
146174a9 3292 PerlIO *fp;
a0d0e21e 3293
6f1401dc 3294 tryAMAGICftest_MG(PL_op->op_type == OP_FTTEXT ? 'T' : 'B');
07fe7c6a 3295
fbb0b3b3
RGS
3296 STACKED_FTEST_CHECK;
3297
533c011a 3298 if (PL_op->op_flags & OPf_REF)
146174a9 3299 gv = cGVOP_gv;
094a3eec 3300 else gv = MAYBE_DEREF_GV_nomg(TOPs);
5f05dabc
PP
3301
3302 if (gv) {
a0d0e21e 3303 EXTEND(SP, 1);
3280af22
NIS
3304 if (gv == PL_defgv) {
3305 if (PL_statgv)
3306 io = GvIO(PL_statgv);
a0d0e21e 3307 else {
3280af22 3308 sv = PL_statname;
a0d0e21e
LW
3309 goto really_filename;
3310 }
3311 }
3312 else {
3280af22
NIS
3313 PL_statgv = gv;
3314 PL_laststatval = -1;
76f68e9b 3315 sv_setpvs(PL_statname, "");
3280af22 3316 io = GvIO(PL_statgv);
a0d0e21e
LW
3317 }
3318 if (io && IoIFP(io)) {
5f05dabc 3319 if (! PerlIO_has_base(IoIFP(io)))
cea2e8a9 3320 DIE(aTHX_ "-T and -B not implemented on filehandles");
3280af22
NIS
3321 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3322 if (PL_laststatval < 0)
5f05dabc 3323 RETPUSHUNDEF;
9cbac4c7 3324 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
533c011a 3325 if (PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW
3326 RETPUSHNO;
3327 else
3328 RETPUSHYES;
9cbac4c7 3329 }
a20bf0c3 3330 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
760ac839 3331 i = PerlIO_getc(IoIFP(io));
a0d0e21e 3332 if (i != EOF)
760ac839 3333 (void)PerlIO_ungetc(IoIFP(io),i);
a0d0e21e 3334 }
a20bf0c3 3335 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
a0d0e21e 3336 RETPUSHYES;
a20bf0c3
JH
3337 len = PerlIO_get_bufsiz(IoIFP(io));
3338 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
760ac839
LW
3339 /* sfio can have large buffers - limit to 512 */
3340 if (len > 512)
3341 len = 512;
a0d0e21e
LW
3342 }
3343 else {
51087808 3344 report_evil_fh(cGVOP_gv);
93189314 3345 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW
3346 RETPUSHUNDEF;
3347 }
3348 }
3349 else {
3350 sv = POPs;
5f05dabc 3351 really_filename:
a0714e2c 3352 PL_statgv = NULL;
5c9aa243 3353 PL_laststype = OP_STAT;
40c852de 3354 sv_setpv(PL_statname, SvPV_nomg_const_nolen(sv));
aa07b2f6 3355 if (!(fp = PerlIO_open(SvPVX_const(PL_statname), "r"))) {
349d4f2f
NC
3356 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname),
3357 '\n'))
9014280d 3358 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
a0d0e21e
LW
3359 RETPUSHUNDEF;
3360 }
146174a9
CB
3361 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(fp), &PL_statcache);
3362 if (PL_laststatval < 0) {
3363 (void)PerlIO_close(fp);
5f05dabc 3364 RETPUSHUNDEF;
146174a9 3365 }
bd61b366 3366 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, NULL);
146174a9
CB
3367 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3368 (void)PerlIO_close(fp);
a0d0e21e 3369 if (len <= 0) {
533c011a 3370 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW
3371 RETPUSHNO; /* special case NFS directories */
3372 RETPUSHYES; /* null file is anything */
3373 }
3374 s = tbuf;
3375 }
3376
3377 /* now scan s to look for textiness */
4633a7c4 3378 /* XXX ASCII dependent code */
a0d0e21e 3379
146174a9
CB
3380#if defined(DOSISH) || defined(USEMYBINMODE)
3381 /* ignore trailing ^Z on short files */
58c0efa5 3382 if (len && len < (I32)sizeof(tbuf) && tbuf[len-1] == 26)
146174a9
CB
3383 --len;
3384#endif
3385
a0d0e21e
LW
3386 for (i = 0; i < len; i++, s++) {
3387 if (!*s) { /* null never allowed in text */
3388 odd += len;
3389 break;
3390 }
9d116dd7 3391#ifdef EBCDIC
301e8125 3392 else if (!(isPRINT(*s) || isSPACE(*s)))
9d116dd7
JH
3393 odd++;
3394#else
146174a9
CB
3395 else if (*s & 128) {
3396#ifdef USE_LOCALE
2de3dbcc 3397 if (IN_LOCALE_RUNTIME && isALPHA_LC(*s))
b3f66c68
GS
3398 continue;
3399#endif
3400 /* utf8 characters don't count as odd */
fd400ab9 3401 if (UTF8_IS_START(*s)) {
b3f66c68
GS
3402 int ulen = UTF8SKIP(s);
3403 if (ulen < len - i) {
3404 int j;
3405 for (j = 1; j < ulen; j++) {
fd400ab9 3406 if (!UTF8_IS_CONTINUATION(s[j]))
b3f66c68
GS
3407 goto not_utf8;
3408 }
3409 --ulen; /* loop does extra increment */
3410 s += ulen;
3411 i += ulen;
3412 continue;
3413 }
3414 }
3415 not_utf8:
3416 odd++;
146174a9 3417 }
a0d0e21e
LW
3418 else if (*s < 32 &&
3419 *s != '\n' && *s != '\r' && *s != '\b' &&
3420 *s != '\t' && *s != '\f' && *s != 27)
3421 odd++;
9d116dd7 3422#endif
a0d0e21e
LW
3423 }
3424