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pp_sys.c: More null check removal
[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"]
a0d0e21e
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 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__)
a0d0e21e
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
a0d0e21e
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 111# include <sys/utime.h>
112# else
113# include <utime.h>
114# endif
a0d0e21e 115#endif
a0d0e21e 116
cbdc8872 117#ifdef HAS_CHSIZE
cd52b7b2 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 128#endif
129
ff68c719 130#ifdef HAS_FLOCK
131# define FLOCK flock
132#else /* no flock() */
133
36477c24 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 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 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
dcbac5bb 251 /* diag_listed_as: entering effective %s failed */
cea2e8a9 252 Perl_croak(aTHX_ "entering effective uid failed");
5ff3f7a4
GS		 253#endif
254
255#if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
cea2e8a9 256 Perl_croak(aTHX_ "switching effective gid is not implemented");
5ff3f7a4
GS		 257#else
258#ifdef HAS_SETREGID
259 if (setregid(egid, rgid))
260#else
261#ifdef HAS_SETRESGID
262 if (setresgid(egid, rgid, (Gid_t)-1))
263#endif
264#endif
dcbac5bb 265 /* diag_listed_as: entering effective %s failed */
cea2e8a9 266 Perl_croak(aTHX_ "entering effective gid failed");
5ff3f7a4
GS		 267#endif
268
269 res = access(path, mode);
270
271#ifdef HAS_SETREUID
272 if (setreuid(ruid, euid))
273#else
274#ifdef HAS_SETRESUID
275 if (setresuid(ruid, euid, (Uid_t)-1))
276#endif
277#endif
dcbac5bb 278 /* diag_listed_as: leaving effective %s failed */
cea2e8a9 279 Perl_croak(aTHX_ "leaving effective uid failed");
5ff3f7a4
GS		 280
281#ifdef HAS_SETREGID
282 if (setregid(rgid, egid))
283#else
284#ifdef HAS_SETRESGID
285 if (setresgid(rgid, egid, (Gid_t)-1))
286#endif
287#endif
dcbac5bb 288 /* diag_listed_as: leaving effective %s failed */
cea2e8a9 289 Perl_croak(aTHX_ "leaving effective gid failed");
5ff3f7a4
GS		 290
291 return res;
292}
d6864606 293# define PERL_EFF_ACCESS(p,f) (S_emulate_eaccess(aTHX_ (p), (f)))
5ff3f7a4
GS		 294#endif
295
a0d0e21e
LW		 296PP(pp_backtick)
297{
97aff369 298 dVAR; dSP; dTARGET;
760ac839 299 PerlIO *fp;
1b6737cc 300 const char * const tmps = POPpconstx;
f54cb97a 301 const I32 gimme = GIMME_V;
e1ec3a88 302 const char *mode = "r";
54310121 303
a0d0e21e 304 TAINT_PROPER("``");
16fe6d59
GS		 305 if (PL_op->op_private & OPpOPEN_IN_RAW)
306 mode = "rb";
307 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
308 mode = "rt";
2fbb330f 309 fp = PerlProc_popen(tmps, mode);
a0d0e21e 310 if (fp) {
11bcd5da 311 const char * const type = Perl_PerlIO_context_layers(aTHX_ NULL);
ac27b0f5
NIS		 312 if (type && *type)
313 PerlIO_apply_layers(aTHX_ fp,mode,type);
314
54310121 315 if (gimme == G_VOID) {
96827780
MB		 316 char tmpbuf[256];
317 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
a79db61d 318 NOOP;
54310121 319 }
320 else if (gimme == G_SCALAR) {
d343c3ef 321 ENTER_with_name("backtick");
75af1a9c 322 SAVESPTR(PL_rs);
fa326138 323 PL_rs = &PL_sv_undef;
76f68e9b 324 sv_setpvs(TARG, ""); /* note that this preserves previous buffer */
bd61b366 325 while (sv_gets(TARG, fp, SvCUR(TARG)) != NULL)
a79db61d 326 NOOP;
d343c3ef 327 LEAVE_with_name("backtick");
a0d0e21e 328 XPUSHs(TARG);
aa689395 329 SvTAINTED_on(TARG);
a0d0e21e
LW		 330 }
331 else {
a0d0e21e 332 for (;;) {
561b68a9 333 SV * const sv = newSV(79);
bd61b366 334 if (sv_gets(sv, fp, 0) == NULL) {
a0d0e21e
LW		 335 SvREFCNT_dec(sv);
336 break;
337 }
6e449a3a 338 mXPUSHs(sv);
a0d0e21e 339 if (SvLEN(sv) - SvCUR(sv) > 20) {
1da4ca5f 340 SvPV_shrink_to_cur(sv);
a0d0e21e 341 }
aa689395 342 SvTAINTED_on(sv);
a0d0e21e
LW		 343 }
344 }
2fbb330f 345 STATUS_NATIVE_CHILD_SET(PerlProc_pclose(fp));
aa689395 346 TAINT; /* "I believe that this is not gratuitous!" */
a0d0e21e
LW		 347 }
348 else {
37038d91 349 STATUS_NATIVE_CHILD_SET(-1);
54310121 350 if (gimme == G_SCALAR)
a0d0e21e
LW		 351 RETPUSHUNDEF;
352 }
353
354 RETURN;
355}
356
357PP(pp_glob)
358{
27da23d5 359 dVAR;
a0d0e21e 360 OP *result;
9426e1a5 361 dSP;
9423a867
FC		 362 GV * const gv = (PL_op->op_flags & OPf_SPECIAL) ? NULL : (GV *)POPs;
363
364 PUTBACK;
365
151cea25
FC		 366 /* make a copy of the pattern if it is gmagical, to ensure that magic
367 * is called once and only once */
9423a867 368 if (SvGMAGICAL(TOPs)) TOPs = sv_2mortal(newSVsv(TOPs));
9426e1a5 369
fc99edcf 370 tryAMAGICunTARGETlist(iter_amg, (PL_op->op_flags & OPf_SPECIAL));
d1bea3d8
DM		 371
372 if (PL_op->op_flags & OPf_SPECIAL) {
373 /* call Perl-level glob function instead. Stack args are:
9423a867 374 * MARK, wildcard
d1bea3d8
DM		 375 * and following OPs should be: gv(CORE::GLOBAL::glob), entersub
376 * */
377 return NORMAL;
378 }
d67594ff 379 if (PL_globhook) {
d67594ff
FC		 380 PL_globhook(aTHX);
381 return NORMAL;
382 }
f5284f61 383
71686f12
GS		 384 /* Note that we only ever get here if File::Glob fails to load
385 * without at the same time croaking, for some reason, or if
386 * perl was built with PERL_EXTERNAL_GLOB */
387
d343c3ef 388 ENTER_with_name("glob");
a0d0e21e 389
c90c0ff4 390#ifndef VMS
284167a5 391 if (TAINTING_get) {
7bac28a0 392 /*
393 * The external globbing program may use things we can't control,
394 * so for security reasons we must assume the worst.
395 */
396 TAINT;
22c35a8c 397 taint_proper(PL_no_security, "glob");
7bac28a0 398 }
c90c0ff4 399#endif /* !VMS */
7bac28a0 400
3280af22 401 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
9423a867 402 PL_last_in_gv = gv;
a0d0e21e 403
3280af22 404 SAVESPTR(PL_rs); /* This is not permanent, either. */
84bafc02 405 PL_rs = newSVpvs_flags("\000", SVs_TEMP);
c07a80fd 406#ifndef DOSISH
407#ifndef CSH
6b88bc9c 408 *SvPVX(PL_rs) = '\n';
a0d0e21e 409#endif /* !CSH */
55497cff 410#endif /* !DOSISH */
c07a80fd 411
a0d0e21e 412 result = do_readline();
d343c3ef 413 LEAVE_with_name("glob");
a0d0e21e
LW		 414 return result;
415}
416
a0d0e21e
LW		 417PP(pp_rcatline)
418{
97aff369 419 dVAR;
146174a9 420 PL_last_in_gv = cGVOP_gv;
a0d0e21e
LW		 421 return do_readline();
422}
423
424PP(pp_warn)
425{
97aff369 426 dVAR; dSP; dMARK;
c5df3096 427 SV *exsv;
06bf62c7 428 STRLEN len;
b59aed67 429 if (SP - MARK > 1) {
a0d0e21e 430 dTARGET;
3280af22 431 do_join(TARG, &PL_sv_no, MARK, SP);
c5df3096 432 exsv = TARG;
a0d0e21e
LW		 433 SP = MARK + 1;
434 }
b59aed67 435 else if (SP == MARK) {
c5df3096 436 exsv = &PL_sv_no;
b59aed67 437 EXTEND(SP, 1);
83f957ec 438 SP = MARK + 1;
b59aed67 439 }
a0d0e21e 440 else {
c5df3096 441 exsv = TOPs;
ef5fe392 442 if (SvGMAGICAL(exsv)) exsv = sv_mortalcopy(exsv);
a0d0e21e 443 }
06bf62c7 444
72d74926 445 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
c5df3096
Z		 446 /* well-formed exception supplied */
447 }
c5df3096 448 else {
eed484f9
DD		 449 SV * const errsv = ERRSV;
450 SvGETMAGIC(errsv);
451 if (SvROK(errsv)) {
452 if (SvGMAGICAL(errsv)) {
ef5fe392 453 exsv = sv_newmortal();
eed484f9 454 sv_setsv_nomg(exsv, errsv);
ef5fe392 455 }
eed484f9 456 else exsv = errsv;
ef5fe392 457 }
eed484f9 458 else if (SvPOKp(errsv) ? SvCUR(errsv) : SvNIOKp(errsv)) {
ef5fe392 459 exsv = sv_newmortal();
eed484f9 460 sv_setsv_nomg(exsv, errsv);
ef5fe392
FC		 461 sv_catpvs(exsv, "\t...caught");
462 }
463 else {
c5df3096 464 exsv = newSVpvs_flags("Warning: something's wrong", SVs_TEMP);
ef5fe392 465 }
c5df3096 466 }
3b7f69a5
FC		 467 if (SvROK(exsv) && !PL_warnhook)
468 Perl_warn(aTHX_ "%"SVf, SVfARG(exsv));
469 else warn_sv(exsv);
a0d0e21e
LW		 470 RETSETYES;
471}
472
473PP(pp_die)
474{
97aff369 475 dVAR; dSP; dMARK;
c5df3096 476 SV *exsv;
06bf62c7 477 STRLEN len;
96e176bf 478#ifdef VMS
97124ef6
FC		 479 VMSISH_HUSHED =
480 VMSISH_HUSHED || (PL_curcop->op_private & OPpHUSH_VMSISH);
96e176bf 481#endif
a0d0e21e
LW		 482 if (SP - MARK != 1) {
483 dTARGET;
3280af22 484 do_join(TARG, &PL_sv_no, MARK, SP);
c5df3096 485 exsv = TARG;
a0d0e21e
LW		 486 SP = MARK + 1;
487 }
488 else {
c5df3096 489 exsv = TOPs;
a0d0e21e 490 }
c5df3096 491
72d74926 492 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
c5df3096
Z		 493 /* well-formed exception supplied */
494 }
eed484f9
DD		 495 else {
496 SV * const errsv = ERRSV;
8b3945e7 497 SvGETMAGIC(errsv);
eed484f9
DD		 498 if (SvROK(errsv)) {
499 exsv = errsv;
500 if (sv_isobject(exsv)) {
501 HV * const stash = SvSTASH(SvRV(exsv));
502 GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
503 if (gv) {
504 SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
505 SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
506 EXTEND(SP, 3);
507 PUSHMARK(SP);
508 PUSHs(exsv);
509 PUSHs(file);
510 PUSHs(line);
511 PUTBACK;
512 call_sv(MUTABLE_SV(GvCV(gv)),
513 G_SCALAR|G_EVAL|G_KEEPERR);
514 exsv = sv_mortalcopy(*PL_stack_sp--);
515 }
05423cc9 516 }
4e6ea2c3 517 }
8b3945e7 518 else if (SvPOK(errsv) && SvCUR(errsv)) {
eed484f9
DD		 519 exsv = sv_mortalcopy(errsv);
520 sv_catpvs(exsv, "\t...propagated");
521 }
522 else {
523 exsv = newSVpvs_flags("Died", SVs_TEMP);
524 }
c5df3096 525 }
9fed9930 526 return die_sv(exsv);
a0d0e21e
LW		 527}
528
529/* I/O. */
530
d682515d 531OP *
3e0cb5de 532Perl_tied_method(pTHX_ SV *methname, SV **sp, SV *const sv,
d682515d 533 const MAGIC *const mg, const U32 flags, U32 argc, ...)
6bcca55b 534{
d8ef3a16
DM		 535 SV **orig_sp = sp;
536 I32 ret_args;
537
d682515d 538 PERL_ARGS_ASSERT_TIED_METHOD;
6bcca55b
NC		 539
540 /* Ensure that our flag bits do not overlap. */
d682515d
NC		 541 assert((TIED_METHOD_MORTALIZE_NOT_NEEDED & G_WANT) == 0);
542 assert((TIED_METHOD_ARGUMENTS_ON_STACK & G_WANT) == 0);
94bc412f 543 assert((TIED_METHOD_SAY & G_WANT) == 0);
6bcca55b 544
d8ef3a16
DM		 545 PUTBACK; /* sp is at *foot* of args, so this pops args from old stack */
546 PUSHSTACKi(PERLSI_MAGIC);
547 EXTEND(SP, argc+1); /* object + args */
6bcca55b 548 PUSHMARK(sp);
d682515d 549 PUSHs(SvTIED_obj(sv, mg));
d8ef3a16
DM		 550 if (flags & TIED_METHOD_ARGUMENTS_ON_STACK) {
551 Copy(orig_sp + 2, sp + 1, argc, SV*); /* copy args to new stack */
1a8c1d59 552 sp += argc;
d8ef3a16 553 }
1a8c1d59 554 else if (argc) {
d682515d
NC		 555 const U32 mortalize_not_needed
556 = flags & TIED_METHOD_MORTALIZE_NOT_NEEDED;
6bcca55b 557 va_list args;
0d5509eb 558 va_start(args, argc);
6bcca55b
NC		 559 do {
560 SV *const arg = va_arg(args, SV *);
561 if(mortalize_not_needed)
562 PUSHs(arg);
563 else
564 mPUSHs(arg);
565 } while (--argc);
566 va_end(args);
567 }
568
569 PUTBACK;
d682515d 570 ENTER_with_name("call_tied_method");
94bc412f
NC		 571 if (flags & TIED_METHOD_SAY) {
572 /* local $\ = "\n" */
573 SAVEGENERICSV(PL_ors_sv);
574 PL_ors_sv = newSVpvs("\n");
575 }
3e0cb5de 576 ret_args = call_sv(methname, (flags & G_WANT)|G_METHOD_NAMED);
d8ef3a16
DM		 577 SPAGAIN;
578 orig_sp = sp;
579 POPSTACK;
580 SPAGAIN;
581 if (ret_args) { /* copy results back to original stack */
582 EXTEND(sp, ret_args);
583 Copy(orig_sp - ret_args + 1, sp + 1, ret_args, SV*);
584 sp += ret_args;
585 PUTBACK;
586 }
d682515d 587 LEAVE_with_name("call_tied_method");
6bcca55b
NC		 588 return NORMAL;
589}
590
d682515d
NC		 591#define tied_method0(a,b,c,d) \
592 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,0)
593#define tied_method1(a,b,c,d,e) \
594 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,1,e)
595#define tied_method2(a,b,c,d,e,f) \
596 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,2,e,f)
6bcca55b 597
a0d0e21e
LW		 598PP(pp_open)
599{
27da23d5 600 dVAR; dSP;
a567e93b
NIS		 601 dMARK; dORIGMARK;
602 dTARGET;
a0d0e21e 603 SV *sv;
5b468f54 604 IO *io;
5c144d81 605 const char *tmps;
a0d0e21e 606 STRLEN len;
a567e93b 607 bool ok;
a0d0e21e 608
159b6efe 609 GV * const gv = MUTABLE_GV(*++MARK);
c4420975 610
13be902c 611 if (!isGV(gv) && !(SvTYPE(gv) == SVt_PVLV && isGV_with_GP(gv)))
cea2e8a9 612 DIE(aTHX_ PL_no_usym, "filehandle");
abc718f2 613
a79db61d 614 if ((io = GvIOp(gv))) {
a5e1d062 615 const MAGIC *mg;
36477c24 616 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
853846ea 617
a2a5de95 618 if (IoDIRP(io))
d1d15184 619 Perl_ck_warner_d(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
d0c0e7dd
FC		 620 "Opening dirhandle %"HEKf" also as a file",
621 HEKfARG(GvENAME_HEK(gv)));
abc718f2 622
ad64d0ec 623 mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
c4420975
AL		 624 if (mg) {
625 /* Method's args are same as ours ... */
626 /* ... except handle is replaced by the object */
3e0cb5de 627 return Perl_tied_method(aTHX_ SV_CONST(OPEN), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC		 628 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
629 sp - mark);
c4420975 630 }
4592e6ca
NIS		 631 }
632
a567e93b
NIS		 633 if (MARK < SP) {
634 sv = *++MARK;
635 }
636 else {
35a08ec7 637 sv = GvSVn(gv);
a567e93b
NIS		 638 }
639
5c144d81 640 tmps = SvPV_const(sv, len);
4608196e 641 ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, NULL, MARK+1, (SP-MARK));
a567e93b
NIS		 642 SP = ORIGMARK;
643 if (ok)
3280af22
NIS		 644 PUSHi( (I32)PL_forkprocess );
645 else if (PL_forkprocess == 0) /* we are a new child */
a0d0e21e
LW		 646 PUSHi(0);
647 else
648 RETPUSHUNDEF;
649 RETURN;
650}
651
652PP(pp_close)
653{
27da23d5 654 dVAR; dSP;
30901a8a
FC		 655 GV * const gv =
656 MAXARG == 0 || (!TOPs && !POPs) ? PL_defoutgv : MUTABLE_GV(POPs);
1d603a67 657
2addaaf3
NC		 658 if (MAXARG == 0)
659 EXTEND(SP, 1);
660
a79db61d
AL		 661 if (gv) {
662 IO * const io = GvIO(gv);
663 if (io) {
a5e1d062 664 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 665 if (mg) {
3e0cb5de 666 return tied_method0(SV_CONST(CLOSE), SP, MUTABLE_SV(io), mg);
a79db61d
AL		 667 }
668 }
1d603a67 669 }
54310121 670 PUSHs(boolSV(do_close(gv, TRUE)));
a0d0e21e
LW		 671 RETURN;
672}
673
674PP(pp_pipe_op)
675{
a0d0e21e 676#ifdef HAS_PIPE
97aff369 677 dVAR;
9cad6237 678 dSP;
eb578fdb
KW		 679 IO *rstio;
680 IO *wstio;
a0d0e21e
LW		 681 int fd[2];
682
159b6efe
NC		 683 GV * const wgv = MUTABLE_GV(POPs);
684 GV * const rgv = MUTABLE_GV(POPs);
a0d0e21e 685
8a6c0fcb
FC		 686 assert (isGV_with_GP(rgv));
687 assert (isGV_with_GP(wgv));
a0d0e21e
LW		 688 rstio = GvIOn(rgv);
689 wstio = GvIOn(wgv);
690
691 if (IoIFP(rstio))
692 do_close(rgv, FALSE);
693 if (IoIFP(wstio))
694 do_close(wgv, FALSE);
695
6ad3d225 696 if (PerlProc_pipe(fd) < 0)
a0d0e21e
LW		 697 goto badexit;
698
460c8493
IZ		 699 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
700 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
b5ac89c3 701 IoOFP(rstio) = IoIFP(rstio);
a0d0e21e 702 IoIFP(wstio) = IoOFP(wstio);
50952442
JH		 703 IoTYPE(rstio) = IoTYPE_RDONLY;
704 IoTYPE(wstio) = IoTYPE_WRONLY;
a0d0e21e
LW		 705
706 if (!IoIFP(rstio) || !IoOFP(wstio)) {
a79db61d
AL		 707 if (IoIFP(rstio))
708 PerlIO_close(IoIFP(rstio));
709 else
710 PerlLIO_close(fd[0]);
711 if (IoOFP(wstio))
712 PerlIO_close(IoOFP(wstio));
713 else
714 PerlLIO_close(fd[1]);
a0d0e21e
LW		 715 goto badexit;
716 }
4771b018
GS		 717#if defined(HAS_FCNTL) && defined(F_SETFD)
718 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
719 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
720#endif
a0d0e21e
LW		 721 RETPUSHYES;
722
723badexit:
724 RETPUSHUNDEF;
725#else
cea2e8a9 726 DIE(aTHX_ PL_no_func, "pipe");
a0d0e21e
LW		 727#endif
728}
729
730PP(pp_fileno)
731{
27da23d5 732 dVAR; dSP; dTARGET;
a0d0e21e
LW		 733 GV *gv;
734 IO *io;
760ac839 735 PerlIO *fp;
a5e1d062 736 const MAGIC *mg;
4592e6ca 737
a0d0e21e
LW		 738 if (MAXARG < 1)
739 RETPUSHUNDEF;
159b6efe 740 gv = MUTABLE_GV(POPs);
9c9f25b8 741 io = GvIO(gv);
4592e6ca 742
9c9f25b8 743 if (io
ad64d0ec 744 && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar)))
5b468f54 745 {
3e0cb5de 746 return tied_method0(SV_CONST(FILENO), SP, MUTABLE_SV(io), mg);
4592e6ca
NIS		 747 }
748
9c9f25b8 749 if (!io || !(fp = IoIFP(io))) {
c289d2f7
JH		 750 /* Can't do this because people seem to do things like
751 defined(fileno($foo)) to check whether $foo is a valid fh.
51087808
NC		 752
753 report_evil_fh(gv);
c289d2f7 754 */
a0d0e21e 755 RETPUSHUNDEF;
c289d2f7
JH		 756 }
757
760ac839 758 PUSHi(PerlIO_fileno(fp));
a0d0e21e
LW		 759 RETURN;
760}
761
762PP(pp_umask)
763{
97aff369 764 dVAR;
27da23d5 765 dSP;
d7e492a4 766#ifdef HAS_UMASK
27da23d5 767 dTARGET;
761237fe 768 Mode_t anum;
a0d0e21e 769
58536d15 770 if (MAXARG < 1 || (!TOPs && !POPs)) {
b0b546b3
GA		 771 anum = PerlLIO_umask(022);
772 /* setting it to 022 between the two calls to umask avoids
773 * to have a window where the umask is set to 0 -- meaning
774 * that another thread could create world-writeable files. */
775 if (anum != 022)
776 (void)PerlLIO_umask(anum);
a0d0e21e
LW		 777 }
778 else
6ad3d225 779 anum = PerlLIO_umask(POPi);
a0d0e21e
LW		 780 TAINT_PROPER("umask");
781 XPUSHi(anum);
782#else
a0288114 783 /* Only DIE if trying to restrict permissions on "user" (self).
eec2d3df
GS		 784 * Otherwise it's harmless and more useful to just return undef
785 * since 'group' and 'other' concepts probably don't exist here. */
58536d15 786 if (MAXARG >= 1 && (TOPs||POPs) && (POPi & 0700))
cea2e8a9 787 DIE(aTHX_ "umask not implemented");
6b88bc9c 788 XPUSHs(&PL_sv_undef);
a0d0e21e
LW		 789#endif
790 RETURN;
791}
792
793PP(pp_binmode)
794{
27da23d5 795 dVAR; dSP;
a0d0e21e
LW		 796 GV *gv;
797 IO *io;
760ac839 798 PerlIO *fp;
a0714e2c 799 SV *discp = NULL;
a0d0e21e
LW		 800
801 if (MAXARG < 1)
802 RETPUSHUNDEF;
60382766 803 if (MAXARG > 1) {
16fe6d59 804 discp = POPs;
60382766 805 }
a0d0e21e 806
159b6efe 807 gv = MUTABLE_GV(POPs);
9c9f25b8 808 io = GvIO(gv);
4592e6ca 809
9c9f25b8 810 if (io) {
a5e1d062 811 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 812 if (mg) {
bc0c81ca
NC		 813 /* This takes advantage of the implementation of the varargs
814 function, which I don't think that the optimiser will be able to
815 figure out. Although, as it's a static function, in theory it
816 could. */
3e0cb5de 817 return Perl_tied_method(aTHX_ SV_CONST(BINMODE), SP, MUTABLE_SV(io), mg,
d682515d
NC		 818 G_SCALAR|TIED_METHOD_MORTALIZE_NOT_NEEDED,
819 discp ? 1 : 0, discp);
a79db61d 820 }
4592e6ca 821 }
a0d0e21e 822
9c9f25b8 823 if (!io || !(fp = IoIFP(io))) {
51087808 824 report_evil_fh(gv);
b5fe5ca2 825 SETERRNO(EBADF,RMS_IFI);
50f846a7
SC		 826 RETPUSHUNDEF;
827 }
a0d0e21e 828
40d98b49 829 PUTBACK;
f0a78170 830 {
a79b25b7
VP		 831 STRLEN len = 0;
832 const char *d = NULL;
833 int mode;
834 if (discp)
835 d = SvPV_const(discp, len);
836 mode = mode_from_discipline(d, len);
f0a78170
NC		 837 if (PerlIO_binmode(aTHX_ fp, IoTYPE(io), mode, d)) {
838 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
839 if (!PerlIO_binmode(aTHX_ IoOFP(io), IoTYPE(io), mode, d)) {
840 SPAGAIN;
841 RETPUSHUNDEF;
842 }
843 }
844 SPAGAIN;
845 RETPUSHYES;
846 }
847 else {
848 SPAGAIN;
849 RETPUSHUNDEF;
38af81ff 850 }
40d98b49 851 }
a0d0e21e
LW		 852}
853
854PP(pp_tie)
855{
27da23d5 856 dVAR; dSP; dMARK;
a0d0e21e 857 HV* stash;
07822e36 858 GV *gv = NULL;
a0d0e21e 859 SV *sv;
1df70142 860 const I32 markoff = MARK - PL_stack_base;
e1ec3a88 861 const char *methname;
14befaf4 862 int how = PERL_MAGIC_tied;
e336de0d 863 U32 items;
c4420975 864 SV *varsv = *++MARK;
a0d0e21e 865
6b05c17a
NIS		 866 switch(SvTYPE(varsv)) {
867 case SVt_PVHV:
aec0c0cc
FC		 868 {
869 HE *entry;
6b05c17a 870 methname = "TIEHASH";
aec0c0cc
FC		 871 if (HvLAZYDEL(varsv) && (entry = HvEITER((HV *)varsv))) {
872 HvLAZYDEL_off(varsv);
873 hv_free_ent((HV *)varsv, entry);
874 }
85fbaab2 875 HvEITER_set(MUTABLE_HV(varsv), 0);
6b05c17a 876 break;
aec0c0cc 877 }
6b05c17a
NIS		 878 case SVt_PVAV:
879 methname = "TIEARRAY";
ce65bc73
FC		 880 if (!AvREAL(varsv)) {
881 if (!AvREIFY(varsv))
882 Perl_croak(aTHX_ "Cannot tie unreifiable array");
883 av_clear((AV *)varsv);
884 AvREIFY_off(varsv);
885 AvREAL_on(varsv);
886 }
6b05c17a
NIS		 887 break;
888 case SVt_PVGV:
13be902c 889 case SVt_PVLV:
8bb5f786 890 if (isGV_with_GP(varsv) && !SvFAKE(varsv)) {
6e592b3a
BM		 891 methname = "TIEHANDLE";
892 how = PERL_MAGIC_tiedscalar;
893 /* For tied filehandles, we apply tiedscalar magic to the IO
894 slot of the GP rather than the GV itself. AMS 20010812 */
895 if (!GvIOp(varsv))
896 GvIOp(varsv) = newIO();
ad64d0ec 897 varsv = MUTABLE_SV(GvIOp(varsv));
6e592b3a
BM		 898 break;
899 }
13733cde
FC		 900 if (SvTYPE(varsv) == SVt_PVLV && LvTYPE(varsv) == 'y') {
901 vivify_defelem(varsv);
902 varsv = LvTARG(varsv);
903 }
6e592b3a 904 /* FALL THROUGH */
6b05c17a
NIS		 905 default:
906 methname = "TIESCALAR";
14befaf4 907 how = PERL_MAGIC_tiedscalar;
6b05c17a
NIS		 908 break;
909 }
e336de0d 910 items = SP - MARK++;
a91d1d42 911 if (sv_isobject(*MARK)) { /* Calls GET magic. */
d343c3ef 912 ENTER_with_name("call_TIE");
e788e7d3 913 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 914 PUSHMARK(SP);
eb160463 915 EXTEND(SP,(I32)items);
e336de0d
GS		 916 while (items--)
917 PUSHs(*MARK++);
918 PUTBACK;
864dbfa3 919 call_method(methname, G_SCALAR);
301e8125 920 }
6b05c17a 921 else {
086d2913
NC		 922 /* Can't use call_method here, else this: fileno FOO; tie @a, "FOO"
923 * will attempt to invoke IO::File::TIEARRAY, with (best case) the
924 * wrong error message, and worse case, supreme action at a distance.
925 * (Sorry obfuscation writers. You're not going to be given this one.)
6b05c17a 926 */
4886938f
BF		 927 stash = gv_stashsv(*MARK, 0);
928 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
35c1215d 929 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
a91d1d42 930 methname, SVfARG(SvOK(*MARK) ? *MARK : &PL_sv_no));
6b05c17a 931 }
d343c3ef 932 ENTER_with_name("call_TIE");
e788e7d3 933 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 934 PUSHMARK(SP);
eb160463 935 EXTEND(SP,(I32)items);
e336de0d
GS		 936 while (items--)
937 PUSHs(*MARK++);
938 PUTBACK;
ad64d0ec 939 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
6b05c17a 940 }
a0d0e21e
LW		 941 SPAGAIN;
942
943 sv = TOPs;
d3acc0f7 944 POPSTACK;
a0d0e21e 945 if (sv_isobject(sv)) {
33c27489 946 sv_unmagic(varsv, how);
ae21d580 947 /* Croak if a self-tie on an aggregate is attempted. */
b881518d 948 if (varsv == SvRV(sv) &&
d87ebaca
YST		 949 (SvTYPE(varsv) == SVt_PVAV ||
950 SvTYPE(varsv) == SVt_PVHV))
ae21d580
JH		 951 Perl_croak(aTHX_
952 "Self-ties of arrays and hashes are not supported");
a0714e2c 953 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
a0d0e21e 954 }
d343c3ef 955 LEAVE_with_name("call_TIE");
3280af22 956 SP = PL_stack_base + markoff;
a0d0e21e
LW		 957 PUSHs(sv);
958 RETURN;
959}
960
961PP(pp_untie)
962{
27da23d5 963 dVAR; dSP;
5b468f54 964 MAGIC *mg;
33c27489 965 SV *sv = POPs;
1df70142 966 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 967 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
55497cff 968
ca0d4ed9 969 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
5b468f54
AMS		 970 RETPUSHYES;
971
13733cde
FC		 972 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y' &&
973 !(sv = defelem_target(sv, NULL))) RETPUSHUNDEF;
974
65eba18f 975 if ((mg = SvTIED_mg(sv, how))) {
1b6737cc 976 SV * const obj = SvRV(SvTIED_obj(sv, mg));
fa2b88e0 977 if (obj) {
c4420975 978 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
0bd48802 979 CV *cv;
c4420975 980 if (gv && isGV(gv) && (cv = GvCV(gv))) {
fa2b88e0 981 PUSHMARK(SP);
c33ef3ac 982 PUSHs(SvTIED_obj(MUTABLE_SV(gv), mg));
6e449a3a 983 mXPUSHi(SvREFCNT(obj) - 1);
fa2b88e0 984 PUTBACK;
d343c3ef 985 ENTER_with_name("call_UNTIE");
ad64d0ec 986 call_sv(MUTABLE_SV(cv), G_VOID);
d343c3ef 987 LEAVE_with_name("call_UNTIE");
fa2b88e0
JS		 988 SPAGAIN;
989 }
a2a5de95
NC		 990 else if (mg && SvREFCNT(obj) > 1) {
991 Perl_ck_warner(aTHX_ packWARN(WARN_UNTIE),
992 "untie attempted while %"UVuf" inner references still exist",
993 (UV)SvREFCNT(obj) - 1 ) ;
c4420975 994 }
cbdc8872 995 }
996 }
38193a09 997 sv_unmagic(sv, how) ;
55497cff 998 RETPUSHYES;
a0d0e21e
LW		 999}
1000
c07a80fd 1001PP(pp_tied)
1002{
97aff369 1003 dVAR;
39644a26 1004 dSP;
1b6737cc 1005 const MAGIC *mg;
33c27489 1006 SV *sv = POPs;
1df70142 1007 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 1008 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
5b468f54 1009
4be76e1f 1010 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
5b468f54 1011 RETPUSHUNDEF;
c07a80fd 1012
13733cde
FC		 1013 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y' &&
1014 !(sv = defelem_target(sv, NULL))) RETPUSHUNDEF;
1015
155aba94 1016 if ((mg = SvTIED_mg(sv, how))) {
dc456155 1017 PUSHs(SvTIED_obj(sv, mg));
33c27489 1018 RETURN;
c07a80fd 1019 }
c07a80fd 1020 RETPUSHUNDEF;
1021}
1022
a0d0e21e
LW		 1023PP(pp_dbmopen)
1024{
27da23d5 1025 dVAR; dSP;
a0d0e21e
LW		 1026 dPOPPOPssrl;
1027 HV* stash;
07822e36 1028 GV *gv = NULL;
a0d0e21e 1029
85fbaab2 1030 HV * const hv = MUTABLE_HV(POPs);
84bafc02 1031 SV * const sv = newSVpvs_flags("AnyDBM_File", SVs_TEMP);
da51bb9b 1032 stash = gv_stashsv(sv, 0);
8ebc5c01 1033 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
a0d0e21e 1034 PUTBACK;
864dbfa3 1035 require_pv("AnyDBM_File.pm");
a0d0e21e 1036 SPAGAIN;
eff494dd 1037 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH")))
cea2e8a9 1038 DIE(aTHX_ "No dbm on this machine");
a0d0e21e
LW		 1039 }
1040
57d3b86d 1041 ENTER;
924508f0 1042 PUSHMARK(SP);
6b05c17a 1043
924508f0 1044 EXTEND(SP, 5);
a0d0e21e
LW		 1045 PUSHs(sv);
1046 PUSHs(left);
1047 if (SvIV(right))
6e449a3a 1048 mPUSHu(O_RDWR|O_CREAT);
a0d0e21e 1049 else
480e0d3c 1050 {
6e449a3a 1051 mPUSHu(O_RDWR);
480e0d3c
FC		 1052 if (!SvOK(right)) right = &PL_sv_no;
1053 }
a0d0e21e 1054 PUSHs(right);
57d3b86d 1055 PUTBACK;
ad64d0ec 1056 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
a0d0e21e
LW		 1057 SPAGAIN;
1058
1059 if (!sv_isobject(TOPs)) {
924508f0
GS		 1060 SP--;
1061 PUSHMARK(SP);
a0d0e21e
LW		 1062 PUSHs(sv);
1063 PUSHs(left);
6e449a3a 1064 mPUSHu(O_RDONLY);
a0d0e21e 1065 PUSHs(right);
a0d0e21e 1066 PUTBACK;
ad64d0ec 1067 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
a0d0e21e
LW		 1068 SPAGAIN;
1069 }
1070
6b05c17a 1071 if (sv_isobject(TOPs)) {
ad64d0ec
NC		 1072 sv_unmagic(MUTABLE_SV(hv), PERL_MAGIC_tied);
1073 sv_magic(MUTABLE_SV(hv), TOPs, PERL_MAGIC_tied, NULL, 0);
6b05c17a 1074 }
a0d0e21e
LW		 1075 LEAVE;
1076 RETURN;
1077}
1078
a0d0e21e
LW		 1079PP(pp_sselect)
1080{
a0d0e21e 1081#ifdef HAS_SELECT
97aff369 1082 dVAR; dSP; dTARGET;
eb578fdb
KW		 1083 I32 i;
1084 I32 j;
1085 char *s;
1086 SV *sv;
65202027 1087 NV value;
a0d0e21e
LW		 1088 I32 maxlen = 0;
1089 I32 nfound;
1090 struct timeval timebuf;
1091 struct timeval *tbuf = &timebuf;
1092 I32 growsize;
1093 char *fd_sets[4];
1094#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1095 I32 masksize;
1096 I32 offset;
1097 I32 k;
1098
1099# if BYTEORDER & 0xf0000
1100# define ORDERBYTE (0x88888888 - BYTEORDER)
1101# else
1102# define ORDERBYTE (0x4444 - BYTEORDER)
1103# endif
1104
1105#endif
1106
1107 SP -= 4;
1108 for (i = 1; i <= 3; i++) {
c4420975 1109 SV * const sv = SP[i];
9d6d5a79 1110 SvGETMAGIC(sv);
15547071
GA		 1111 if (!SvOK(sv))
1112 continue;
ba3062ae
FC		 1113 if (SvREADONLY(sv)) {
1114 if (!(SvPOK(sv) && SvCUR(sv) == 0))
cb077ed2 1115 Perl_croak_no_modify();
ba3062ae
FC		 1116 }
1117 else if (SvIsCOW(sv)) sv_force_normal_flags(sv, 0);
4ef2275c 1118 if (!SvPOK(sv)) {
9d6d5a79
FC		 1119 if (!SvPOKp(sv))
1120 Perl_ck_warner(aTHX_ packWARN(WARN_MISC),
1121 "Non-string passed as bitmask");
1122 SvPV_force_nomg_nolen(sv); /* force string conversion */
4ef2275c 1123 }
729c079f 1124 j = SvCUR(sv);
a0d0e21e
LW		 1125 if (maxlen < j)
1126 maxlen = j;
1127 }
1128
5ff3f7a4 1129/* little endians can use vecs directly */
e366b469 1130#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
5ff3f7a4 1131# ifdef NFDBITS
a0d0e21e 1132
5ff3f7a4
GS		 1133# ifndef NBBY
1134# define NBBY 8
1135# endif
a0d0e21e
LW		 1136
1137 masksize = NFDBITS / NBBY;
5ff3f7a4 1138# else
a0d0e21e 1139 masksize = sizeof(long); /* documented int, everyone seems to use long */
5ff3f7a4 1140# endif
a0d0e21e
LW		 1141 Zero(&fd_sets[0], 4, char*);
1142#endif
1143
ad517f75
MHM		 1144# if SELECT_MIN_BITS == 1
1145 growsize = sizeof(fd_set);
1146# else
1147# if defined(__GLIBC__) && defined(__FD_SETSIZE)
1148# undef SELECT_MIN_BITS
1149# define SELECT_MIN_BITS __FD_SETSIZE
1150# endif
e366b469
PG		 1151 /* If SELECT_MIN_BITS is greater than one we most probably will want
1152 * to align the sizes with SELECT_MIN_BITS/8 because for example
1153 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
1154 * UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
1155 * on (sets/tests/clears bits) is 32 bits. */
1156 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
e366b469
PG		 1157# endif
1158
a0d0e21e 1159 sv = SP[4];
90eaaf02 1160 SvGETMAGIC(sv);
a0d0e21e 1161 if (SvOK(sv)) {
90eaaf02 1162 value = SvNV_nomg(sv);
a0d0e21e
LW		 1163 if (value < 0.0)
1164 value = 0.0;
1165 timebuf.tv_sec = (long)value;
65202027 1166 value -= (NV)timebuf.tv_sec;
a0d0e21e
LW		 1167 timebuf.tv_usec = (long)(value * 1000000.0);
1168 }
1169 else
4608196e 1170 tbuf = NULL;
a0d0e21e
LW		 1171
1172 for (i = 1; i <= 3; i++) {
1173 sv = SP[i];
15547071 1174 if (!SvOK(sv) || SvCUR(sv) == 0) {
a0d0e21e
LW		 1175 fd_sets[i] = 0;
1176 continue;
1177 }
4ef2275c 1178 assert(SvPOK(sv));
a0d0e21e
LW		 1179 j = SvLEN(sv);
1180 if (j < growsize) {
1181 Sv_Grow(sv, growsize);
a0d0e21e 1182 }
c07a80fd 1183 j = SvCUR(sv);
1184 s = SvPVX(sv) + j;
1185 while (++j <= growsize) {
1186 *s++ = '\0';
1187 }
1188
a0d0e21e
LW		 1189#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1190 s = SvPVX(sv);
a02a5408 1191 Newx(fd_sets[i], growsize, char);
a0d0e21e
LW		 1192 for (offset = 0; offset < growsize; offset += masksize) {
1193 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1194 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1195 }
1196#else
1197 fd_sets[i] = SvPVX(sv);
1198#endif
1199 }
1200
dc4c69d9
JH		 1201#ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1202 /* Can't make just the (void*) conditional because that would be
1203 * cpp #if within cpp macro, and not all compilers like that. */
1204 nfound = PerlSock_select(
1205 maxlen * 8,
1206 (Select_fd_set_t) fd_sets[1],
1207 (Select_fd_set_t) fd_sets[2],
1208 (Select_fd_set_t) fd_sets[3],
1209 (void*) tbuf); /* Workaround for compiler bug. */
1210#else
6ad3d225 1211 nfound = PerlSock_select(
a0d0e21e
LW		 1212 maxlen * 8,
1213 (Select_fd_set_t) fd_sets[1],
1214 (Select_fd_set_t) fd_sets[2],
1215 (Select_fd_set_t) fd_sets[3],
1216 tbuf);
dc4c69d9 1217#endif
a0d0e21e
LW		 1218 for (i = 1; i <= 3; i++) {
1219 if (fd_sets[i]) {
1220 sv = SP[i];
1221#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1222 s = SvPVX(sv);
1223 for (offset = 0; offset < growsize; offset += masksize) {
1224 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1225 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1226 }
1227 Safefree(fd_sets[i]);
1228#endif
1229 SvSETMAGIC(sv);
1230 }
1231 }
1232
4189264e 1233 PUSHi(nfound);
a0d0e21e 1234 if (GIMME == G_ARRAY && tbuf) {
65202027
DS		 1235 value = (NV)(timebuf.tv_sec) +
1236 (NV)(timebuf.tv_usec) / 1000000.0;
6e449a3a 1237 mPUSHn(value);
a0d0e21e
LW		 1238 }
1239 RETURN;
1240#else
cea2e8a9 1241 DIE(aTHX_ "select not implemented");
a0d0e21e
LW		 1242#endif
1243}
1244
8226a3d7
NC		 1245/*
1246=for apidoc setdefout
1247
1248Sets PL_defoutgv, the default file handle for output, to the passed in
1249typeglob. As PL_defoutgv "owns" a reference on its typeglob, the reference
1250count of the passed in typeglob is increased by one, and the reference count
1251of the typeglob that PL_defoutgv points to is decreased by one.
1252
1253=cut
1254*/
1255
4633a7c4 1256void
864dbfa3 1257Perl_setdefout(pTHX_ GV *gv)
4633a7c4 1258{
97aff369 1259 dVAR;
9a9bb270
FC		 1260 PERL_ARGS_ASSERT_SETDEFOUT;
1261 SvREFCNT_inc_simple_void_NN(gv);
ef8d46e8 1262 SvREFCNT_dec(PL_defoutgv);
3280af22 1263 PL_defoutgv = gv;
4633a7c4
LW		 1264}
1265
a0d0e21e
LW		 1266PP(pp_select)
1267{
97aff369 1268 dVAR; dSP; dTARGET;
4633a7c4 1269 HV *hv;
159b6efe 1270 GV * const newdefout = (PL_op->op_private > 0) ? (MUTABLE_GV(POPs)) : NULL;
099be4f1 1271 GV * egv = GvEGVx(PL_defoutgv);
0df2568b 1272 GV * const *gvp;
4633a7c4 1273
4633a7c4 1274 if (!egv)
3280af22 1275 egv = PL_defoutgv;
099be4f1 1276 hv = isGV_with_GP(egv) ? GvSTASH(egv) : NULL;
0df2568b 1277 gvp = hv && HvENAME(hv)
204263bc
FC		 1278 ? (GV**)hv_fetch(hv, GvNAME(egv), HEK_UTF8(GvNAME_HEK(egv)) ? -GvNAMELEN(egv) : GvNAMELEN(egv), FALSE)
1279 : NULL;
0df2568b 1280 if (gvp && *gvp == egv) {
bd61b366 1281 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
f86702cc 1282 XPUSHTARG;
0df2568b
FC		 1283 }
1284 else {
ad64d0ec 1285 mXPUSHs(newRV(MUTABLE_SV(egv)));
4633a7c4
LW		 1286 }
1287
1288 if (newdefout) {
ded8aa31
GS		 1289 if (!GvIO(newdefout))
1290 gv_IOadd(newdefout);
4633a7c4
LW		 1291 setdefout(newdefout);
1292 }
1293
a0d0e21e
LW		 1294 RETURN;
1295}
1296
1297PP(pp_getc)
1298{
27da23d5 1299 dVAR; dSP; dTARGET;
30901a8a
FC		 1300 GV * const gv =
1301 MAXARG==0 || (!TOPs && !POPs) ? PL_stdingv : MUTABLE_GV(POPs);
9c9f25b8 1302 IO *const io = GvIO(gv);
2ae324a7 1303
ac3697cd
NC		 1304 if (MAXARG == 0)
1305 EXTEND(SP, 1);
1306
9c9f25b8 1307 if (io) {
a5e1d062 1308 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1309 if (mg) {
0240605e 1310 const U32 gimme = GIMME_V;
3e0cb5de 1311 Perl_tied_method(aTHX_ SV_CONST(GETC), SP, MUTABLE_SV(io), mg, gimme, 0);
0240605e
NC		 1312 if (gimme == G_SCALAR) {
1313 SPAGAIN;
a79db61d 1314 SvSetMagicSV_nosteal(TARG, TOPs);
0240605e
NC		 1315 }
1316 return NORMAL;
a79db61d 1317 }
2ae324a7 1318 }
90133b69 1319 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
51087808 1320 if (!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
831e4cc3 1321 report_evil_fh(gv);
b5fe5ca2 1322 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1323 RETPUSHUNDEF;
90133b69 1324 }
bbce6d69 1325 TAINT;
76f68e9b 1326 sv_setpvs(TARG, " ");
9bc64814 1327 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
7d59b7e4
NIS		 1328 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1329 /* Find out how many bytes the char needs */
aa07b2f6 1330 Size_t len = UTF8SKIP(SvPVX_const(TARG));
7d59b7e4
NIS		 1331 if (len > 1) {
1332 SvGROW(TARG,len+1);
1333 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1334 SvCUR_set(TARG,1+len);
1335 }
1336 SvUTF8_on(TARG);
1337 }
a0d0e21e
LW		 1338 PUSHTARG;
1339 RETURN;
1340}
1341
76e3520e 1342STATIC OP *
cea2e8a9 1343S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
a0d0e21e 1344{
27da23d5 1345 dVAR;
eb578fdb 1346 PERL_CONTEXT *cx;
f54cb97a 1347 const I32 gimme = GIMME_V;
a0d0e21e 1348
7918f24d
NC		 1349 PERL_ARGS_ASSERT_DOFORM;
1350
7b190374
NC		 1351 if (cv && CvCLONE(cv))
1352 cv = MUTABLE_CV(sv_2mortal(MUTABLE_SV(cv_clone(cv))));
1353
a0d0e21e
LW		 1354 ENTER;
1355 SAVETMPS;
1356
146174a9 1357 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
10067d9a 1358 PUSHFORMAT(cx, retop);
f32c7e86
FC		 1359 if (CvDEPTH(cv) >= 2) {
1360 PERL_STACK_OVERFLOW_CHECK();
1361 pad_push(CvPADLIST(cv), CvDEPTH(cv));
1362 }
fd617465 1363 SAVECOMPPAD();
f32c7e86 1364 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), CvDEPTH(cv));
a0d0e21e 1365
4633a7c4 1366 setdefout(gv); /* locally select filehandle so $% et al work */
a0d0e21e
LW		 1367 return CvSTART(cv);
1368}
1369
1370PP(pp_enterwrite)
1371{
97aff369 1372 dVAR;
39644a26 1373 dSP;
eb578fdb
KW		 1374 GV *gv;
1375 IO *io;
a0d0e21e 1376 GV *fgv;
07822e36
JH		 1377 CV *cv = NULL;
1378 SV *tmpsv = NULL;
a0d0e21e 1379
2addaaf3 1380 if (MAXARG == 0) {
3280af22 1381 gv = PL_defoutgv;
2addaaf3
NC		 1382 EXTEND(SP, 1);
1383 }
a0d0e21e 1384 else {
159b6efe 1385 gv = MUTABLE_GV(POPs);
a0d0e21e 1386 if (!gv)
3280af22 1387 gv = PL_defoutgv;
a0d0e21e 1388 }
a0d0e21e
LW		 1389 io = GvIO(gv);
1390 if (!io) {
1391 RETPUSHNO;
1392 }
1393 if (IoFMT_GV(io))
1394 fgv = IoFMT_GV(io);
1395 else
1396 fgv = gv;
1397
2d1ebc9b 1398 assert(fgv);
a79db61d 1399
a0d0e21e 1400 cv = GvFORM(fgv);
a0d0e21e 1401 if (!cv) {
10edeb5d 1402 tmpsv = sv_newmortal();
f4a7049d 1403 gv_efullname4(tmpsv, fgv, NULL, FALSE);
2d1ebc9b 1404 DIE(aTHX_ "Undefined format \"%"SVf"\" called", SVfARG(tmpsv));
a0d0e21e 1405 }
44a8e56a 1406 IoFLAGS(io) &= ~IOf_DIDTOP;
8e4ecf23 1407 RETURNOP(doform(cv,gv,PL_op->op_next));
a0d0e21e
LW		 1408}
1409
1410PP(pp_leavewrite)
1411{
27da23d5 1412 dVAR; dSP;
f9c764c5 1413 GV * const gv = cxstack[cxstack_ix].blk_format.gv;
eb578fdb 1414 IO * const io = GvIOp(gv);
8b8cacda 1415 PerlIO *ofp;
760ac839 1416 PerlIO *fp;
8772537c
AL		 1417 SV **newsp;
1418 I32 gimme;
eb578fdb 1419 PERL_CONTEXT *cx;
8f89e5a9 1420 OP *retop;
a0d0e21e 1421
8b8cacda
B		 1422 if (!io || !(ofp = IoOFP(io)))
1423 goto forget_top;
1424
760ac839 1425 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1426 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
8b8cacda 1427
3280af22
NIS		 1428 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1429 PL_formtarget != PL_toptarget)
a0d0e21e 1430 {
4633a7c4
LW		 1431 GV *fgv;
1432 CV *cv;
a0d0e21e
LW		 1433 if (!IoTOP_GV(io)) {
1434 GV *topgv;
a0d0e21e
LW		 1435
1436 if (!IoTOP_NAME(io)) {
1b6737cc 1437 SV *topname;
a0d0e21e
LW		 1438 if (!IoFMT_NAME(io))
1439 IoFMT_NAME(io) = savepv(GvNAME(gv));
d0c0e7dd
FC		 1440 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%"HEKf"_TOP",
1441 HEKfARG(GvNAME_HEK(gv))));
f776e3cd 1442 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
748a9306 1443 if ((topgv && GvFORM(topgv)) ||
fafc274c 1444 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
2e0de35c 1445 IoTOP_NAME(io) = savesvpv(topname);
a0d0e21e 1446 else
89529cee 1447 IoTOP_NAME(io) = savepvs("top");
a0d0e21e 1448 }
f776e3cd 1449 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
a0d0e21e 1450 if (!topgv || !GvFORM(topgv)) {
b929a54b 1451 IoLINES_LEFT(io) = IoPAGE_LEN(io);
a0d0e21e
LW		 1452 goto forget_top;
1453 }
1454 IoTOP_GV(io) = topgv;
1455 }
748a9306
LW		 1456 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1457 I32 lines = IoLINES_LEFT(io);
504618e9 1458 const char *s = SvPVX_const(PL_formtarget);
8e07c86e
AD		 1459 if (lines <= 0) /* Yow, header didn't even fit!!! */
1460 goto forget_top;
748a9306
LW		 1461 while (lines-- > 0) {
1462 s = strchr(s, '\n');
1463 if (!s)
1464 break;
1465 s++;
1466 }
1467 if (s) {
f54cb97a 1468 const STRLEN save = SvCUR(PL_formtarget);
aa07b2f6 1469 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
d75029d0
NIS		 1470 do_print(PL_formtarget, ofp);
1471 SvCUR_set(PL_formtarget, save);
3280af22
NIS		 1472 sv_chop(PL_formtarget, s);
1473 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW		 1474 }
1475 }
a0d0e21e 1476 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
f6dfc736 1477 do_print(GvSV(gv_fetchpvs("\f", GV_ADD, SVt_PV)), ofp);
a0d0e21e
LW		 1478 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1479 IoPAGE(io)++;
3280af22 1480 PL_formtarget = PL_toptarget;
748a9306 1481 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4 1482 fgv = IoTOP_GV(io);
636013b3 1483 assert(fgv); /* IoTOP_GV(io) should have been set above */
4633a7c4 1484 cv = GvFORM(fgv);
1df70142
AL		 1485 if (!cv) {
1486 SV * const sv = sv_newmortal();
bd61b366 1487 gv_efullname4(sv, fgv, NULL, FALSE);
44b7e78a 1488 DIE(aTHX_ "Undefined top format \"%"SVf"\" called", SVfARG(sv));
4633a7c4 1489 }
43cd5cb7 1490 return doform(cv, gv, PL_op);
a0d0e21e
LW		 1491 }
1492
1493 forget_top:
3280af22 1494 POPBLOCK(cx,PL_curpm);
8f89e5a9 1495 retop = cx->blk_sub.retop;
25375124 1496 POPFORMAT(cx);
43cd5cb7 1497 SP = newsp; /* ignore retval of formline */
a0d0e21e
LW		 1498 LEAVE;
1499
c782dc1d
FC		 1500 if (!io || !(fp = IoOFP(io))) {
1501 if (io && IoIFP(io))
7716c5c5 1502 report_wrongway_fh(gv, '<');
c521cf7c 1503 else
7716c5c5 1504 report_evil_fh(gv);
3280af22 1505 PUSHs(&PL_sv_no);
a0d0e21e
LW		 1506 }
1507 else {
3280af22 1508 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
a2a5de95 1509 Perl_ck_warner(aTHX_ packWARN(WARN_IO), "page overflow");
a0d0e21e 1510 }
d75029d0 1511 if (!do_print(PL_formtarget, fp))
3280af22 1512 PUSHs(&PL_sv_no);
a0d0e21e 1513 else {
3280af22
NIS		 1514 FmLINES(PL_formtarget) = 0;
1515 SvCUR_set(PL_formtarget, 0);
1516 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1517 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1518 (void)PerlIO_flush(fp);
3280af22 1519 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1520 }
1521 }
3280af22 1522 PL_formtarget = PL_bodytarget;
29033a8a 1523 PERL_UNUSED_VAR(gimme);
8e4ecf23 1524 RETURNOP(retop);
a0d0e21e
LW		 1525}
1526
1527PP(pp_prtf)
1528{
27da23d5 1529 dVAR; dSP; dMARK; dORIGMARK;
760ac839 1530 PerlIO *fp;
a0d0e21e 1531
159b6efe
NC		 1532 GV * const gv
1533 = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv;
9c9f25b8 1534 IO *const io = GvIO(gv);
46fc3d4c 1535
87385d72
FC		 1536 /* Treat empty list as "" */
1537 if (MARK == SP) XPUSHs(&PL_sv_no);
1538
9c9f25b8 1539 if (io) {
a5e1d062 1540 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d
AL		 1541 if (mg) {
1542 if (MARK == ORIGMARK) {
1543 MEXTEND(SP, 1);
1544 ++MARK;
1545 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1546 ++SP;
1547 }
3e0cb5de 1548 return Perl_tied_method(aTHX_ SV_CONST(PRINTF), mark - 1, MUTABLE_SV(io),
d682515d
NC		 1549 mg,
1550 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1551 sp - mark);
a79db61d 1552 }
46fc3d4c 1553 }
1554
9c9f25b8 1555 if (!io) {
51087808 1556 report_evil_fh(gv);
93189314 1557 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW		 1558 goto just_say_no;
1559 }
1560 else if (!(fp = IoOFP(io))) {
7716c5c5
NC		 1561 if (IoIFP(io))
1562 report_wrongway_fh(gv, '<');
1563 else if (ckWARN(WARN_CLOSED))
1564 report_evil_fh(gv);
93189314 1565 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
a0d0e21e
LW		 1566 goto just_say_no;
1567 }
1568 else {
c7bd8b84 1569 SV *sv = sv_newmortal();
a0d0e21e
LW		 1570 do_sprintf(sv, SP - MARK, MARK + 1);
1571 if (!do_print(sv, fp))
1572 goto just_say_no;
1573
1574 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1575 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW		 1576 goto just_say_no;
1577 }
a0d0e21e 1578 SP = ORIGMARK;
3280af22 1579 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1580 RETURN;
1581
1582 just_say_no:
a0d0e21e 1583 SP = ORIGMARK;
3280af22 1584 PUSHs(&PL_sv_undef);
a0d0e21e
LW		 1585 RETURN;
1586}
1587
c07a80fd 1588PP(pp_sysopen)
1589{
97aff369 1590 dVAR;
39644a26 1591 dSP;
de5e49e1 1592 const int perm = (MAXARG > 3 && (TOPs || POPs)) ? POPi : 0666;
1df70142 1593 const int mode = POPi;
1b6737cc 1594 SV * const sv = POPs;
159b6efe 1595 GV * const gv = MUTABLE_GV(POPs);
1b6737cc 1596 STRLEN len;
c07a80fd 1597
4592e6ca 1598 /* Need TIEHANDLE method ? */
1b6737cc 1599 const char * const tmps = SvPV_const(sv, len);
e62f0680 1600 /* FIXME? do_open should do const */
4608196e 1601 if (do_open(gv, tmps, len, TRUE, mode, perm, NULL)) {
c07a80fd 1602 IoLINES(GvIOp(gv)) = 0;
3280af22 1603 PUSHs(&PL_sv_yes);
c07a80fd 1604 }
1605 else {
3280af22 1606 PUSHs(&PL_sv_undef);
c07a80fd 1607 }
1608 RETURN;
1609}
1610
a0d0e21e
LW		 1611PP(pp_sysread)
1612{
27da23d5 1613 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
0b423688 1614 SSize_t offset;
a0d0e21e
LW		 1615 IO *io;
1616 char *buffer;
0b423688 1617 STRLEN orig_size;
5b54f415 1618 SSize_t length;
eb5c063a 1619 SSize_t count;
748a9306 1620 SV *bufsv;
a0d0e21e 1621 STRLEN blen;
eb5c063a 1622 int fp_utf8;
1dd30107
NC		 1623 int buffer_utf8;
1624 SV *read_target;
eb5c063a
NIS		 1625 Size_t got = 0;
1626 Size_t wanted;
1d636c13 1627 bool charstart = FALSE;
87330c3c
JH		 1628 STRLEN charskip = 0;
1629 STRLEN skip = 0;
a0d0e21e 1630
159b6efe 1631 GV * const gv = MUTABLE_GV(*++MARK);
5b468f54 1632 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1b6737cc 1633 && gv && (io = GvIO(gv)) )
137443ea 1634 {
a5e1d062 1635 const MAGIC *const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1b6737cc 1636 if (mg) {
3e0cb5de 1637 return Perl_tied_method(aTHX_ SV_CONST(READ), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC		 1638 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1639 sp - mark);
1b6737cc 1640 }
2ae324a7 1641 }
1642
a0d0e21e
LW		 1643 if (!gv)
1644 goto say_undef;
748a9306 1645 bufsv = *++MARK;
ff68c719 1646 if (! SvOK(bufsv))
76f68e9b 1647 sv_setpvs(bufsv, "");
a0d0e21e 1648 length = SvIVx(*++MARK);
4bac9ae4
CS		 1649 if (length < 0)
1650 DIE(aTHX_ "Negative length");
748a9306 1651 SETERRNO(0,0);
a0d0e21e
LW		 1652 if (MARK < SP)
1653 offset = SvIVx(*++MARK);
1654 else
1655 offset = 0;
1656 io = GvIO(gv);
b5fe5ca2 1657 if (!io || !IoIFP(io)) {
51087808 1658 report_evil_fh(gv);
b5fe5ca2 1659 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1660 goto say_undef;
b5fe5ca2 1661 }
0064a8a9 1662 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
7d59b7e4 1663 buffer = SvPVutf8_force(bufsv, blen);
1e54db1a 1664 /* UTF-8 may not have been set if they are all low bytes */
eb5c063a 1665 SvUTF8_on(bufsv);
9b9d7ce8 1666 buffer_utf8 = 0;
7d59b7e4
NIS		 1667 }
1668 else {
1669 buffer = SvPV_force(bufsv, blen);
1dd30107 1670 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
7d59b7e4 1671 }
4bac9ae4 1672 if (DO_UTF8(bufsv)) {
3f914778 1673 blen = sv_len_utf8_nomg(bufsv);
4bac9ae4 1674 }
7d59b7e4 1675
d0965105
JH		 1676 charstart = TRUE;
1677 charskip = 0;
87330c3c 1678 skip = 0;
4bac9ae4 1679 wanted = length;
d0965105 1680
a0d0e21e 1681#ifdef HAS_SOCKET
533c011a 1682 if (PL_op->op_type == OP_RECV) {
0b423688 1683 Sock_size_t bufsize;
46fc3d4c 1684 char namebuf[MAXPATHLEN];
b5afd346 1685#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
490ab354
JH		 1686 bufsize = sizeof (struct sockaddr_in);
1687#else
46fc3d4c 1688 bufsize = sizeof namebuf;
490ab354 1689#endif
abf95952
IZ		 1690#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1691 if (bufsize >= 256)
1692 bufsize = 255;
1693#endif
eb160463 1694 buffer = SvGROW(bufsv, (STRLEN)(length+1));
bbce6d69 1695 /* 'offset' means 'flags' here */
eb5c063a 1696 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
10edeb5d 1697 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1698 if (count < 0)
a0d0e21e 1699 RETPUSHUNDEF;
8eb023a9
DM		 1700 /* MSG_TRUNC can give oversized count; quietly lose it */
1701 if (count > length)
1702 count = length;
eb5c063a 1703 SvCUR_set(bufsv, count);
748a9306
LW		 1704 *SvEND(bufsv) = '\0';
1705 (void)SvPOK_only(bufsv);
eb5c063a
NIS		 1706 if (fp_utf8)
1707 SvUTF8_on(bufsv);
748a9306 1708 SvSETMAGIC(bufsv);
aac0dd9a 1709 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1710 if (!(IoFLAGS(io) & IOf_UNTAINT))
1711 SvTAINTED_on(bufsv);
a0d0e21e 1712 SP = ORIGMARK;
46fc3d4c 1713 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW		 1714 PUSHs(TARG);
1715 RETURN;
1716 }
a0d0e21e 1717#endif
bbce6d69 1718 if (offset < 0) {
0b423688 1719 if (-offset > (SSize_t)blen)
cea2e8a9 1720 DIE(aTHX_ "Offset outside string");
bbce6d69 1721 offset += blen;
1722 }
eb5c063a
NIS		 1723 if (DO_UTF8(bufsv)) {
1724 /* convert offset-as-chars to offset-as-bytes */
d5f981bb 1725 if (offset >= (SSize_t)blen)
6960c29a
CH		 1726 offset += SvCUR(bufsv) - blen;
1727 else
1728 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
eb5c063a
NIS		 1729 }
1730 more_bytes:
0b423688 1731 orig_size = SvCUR(bufsv);
1dd30107
NC		 1732 /* Allocating length + offset + 1 isn't perfect in the case of reading
1733 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1734 unduly.
1735 (should be 2 * length + offset + 1, or possibly something longer if
1736 PL_encoding is true) */
eb160463 1737 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
0b423688
TC		 1738 if (offset > 0 && offset > (SSize_t)orig_size) { /* Zero any newly allocated space */
1739 Zero(buffer+orig_size, offset-orig_size, char);
cd52b7b2 1740 }
eb5c063a 1741 buffer = buffer + offset;
1dd30107
NC		 1742 if (!buffer_utf8) {
1743 read_target = bufsv;
1744 } else {
1745 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1746 concatenate it to the current buffer. */
1747
1748 /* Truncate the existing buffer to the start of where we will be
1749 reading to: */
1750 SvCUR_set(bufsv, offset);
1751
1752 read_target = sv_newmortal();
862a34c6 1753 SvUPGRADE(read_target, SVt_PV);
fe2774ed 1754 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1dd30107 1755 }
eb5c063a 1756
533c011a 1757 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1758#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1759 if (IoTYPE(io) == IoTYPE_SOCKET) {
eb5c063a
NIS		 1760 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1761 buffer, length, 0);
a7092146
GS		 1762 }
1763 else
1764#endif
1765 {
eb5c063a
NIS		 1766 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1767 buffer, length);
a7092146 1768 }
a0d0e21e
LW		 1769 }
1770 else
3b02c43c 1771 {
eb5c063a
NIS		 1772 count = PerlIO_read(IoIFP(io), buffer, length);
1773 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1774 if (count == 0 && PerlIO_error(IoIFP(io)))
1775 count = -1;
3b02c43c 1776 }
eb5c063a 1777 if (count < 0) {
7716c5c5 1778 if (IoTYPE(io) == IoTYPE_WRONLY)
a5390457 1779 report_wrongway_fh(gv, '>');
a0d0e21e 1780 goto say_undef;
af8c498a 1781 }
aa07b2f6 1782 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1dd30107
NC		 1783 *SvEND(read_target) = '\0';
1784 (void)SvPOK_only(read_target);
0064a8a9 1785 if (fp_utf8 && !IN_BYTES) {
eb5c063a 1786 /* Look at utf8 we got back and count the characters */
1df70142 1787 const char *bend = buffer + count;
eb5c063a 1788 while (buffer < bend) {
d0965105
JH		 1789 if (charstart) {
1790 skip = UTF8SKIP(buffer);
1791 charskip = 0;
1792 }
1793 if (buffer - charskip + skip > bend) {
eb5c063a
NIS		 1794 /* partial character - try for rest of it */
1795 length = skip - (bend-buffer);
aa07b2f6 1796 offset = bend - SvPVX_const(bufsv);
d0965105
JH		 1797 charstart = FALSE;
1798 charskip += count;
eb5c063a
NIS		 1799 goto more_bytes;
1800 }
1801 else {
1802 got++;
1803 buffer += skip;
d0965105
JH		 1804 charstart = TRUE;
1805 charskip = 0;
eb5c063a
NIS		 1806 }
1807 }
1808 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1809 provided amount read (count) was what was requested (length)
1810 */
1811 if (got < wanted && count == length) {
d0965105 1812 length = wanted - got;
aa07b2f6 1813 offset = bend - SvPVX_const(bufsv);
eb5c063a
NIS		 1814 goto more_bytes;
1815 }
1816 /* return value is character count */
1817 count = got;
1818 SvUTF8_on(bufsv);
1819 }
1dd30107
NC		 1820 else if (buffer_utf8) {
1821 /* Let svcatsv upgrade the bytes we read in to utf8.
1822 The buffer is a mortal so will be freed soon. */
1823 sv_catsv_nomg(bufsv, read_target);
1824 }
748a9306 1825 SvSETMAGIC(bufsv);
aac0dd9a 1826 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1827 if (!(IoFLAGS(io) & IOf_UNTAINT))
1828 SvTAINTED_on(bufsv);
a0d0e21e 1829 SP = ORIGMARK;
eb5c063a 1830 PUSHi(count);
a0d0e21e
LW		 1831 RETURN;
1832
1833 say_undef:
1834 SP = ORIGMARK;
1835 RETPUSHUNDEF;
1836}
1837
60504e18 1838PP(pp_syswrite)
a0d0e21e 1839{
27da23d5 1840 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
748a9306 1841 SV *bufsv;
83003860 1842 const char *buffer;
8c99d73e 1843 SSize_t retval;
a0d0e21e 1844 STRLEN blen;
c9cb0f41 1845 STRLEN orig_blen_bytes;
64a1bc8e 1846 const int op_type = PL_op->op_type;
c9cb0f41
NC		 1847 bool doing_utf8;
1848 U8 *tmpbuf = NULL;
159b6efe 1849 GV *const gv = MUTABLE_GV(*++MARK);
91472ad4
NC		 1850 IO *const io = GvIO(gv);
1851
1852 if (op_type == OP_SYSWRITE && io) {
a5e1d062 1853 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1854 if (mg) {
a79db61d 1855 if (MARK == SP - 1) {
c8834ab7
TC		 1856 SV *sv = *SP;
1857 mXPUSHi(sv_len(sv));
a79db61d
AL		 1858 PUTBACK;
1859 }
1860
3e0cb5de 1861 return Perl_tied_method(aTHX_ SV_CONST(WRITE), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC		 1862 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1863 sp - mark);
64a1bc8e 1864 }
1d603a67 1865 }
a0d0e21e
LW		 1866 if (!gv)
1867 goto say_undef;
64a1bc8e 1868
748a9306 1869 bufsv = *++MARK;
64a1bc8e 1870
748a9306 1871 SETERRNO(0,0);
cf167416 1872 if (!io || !IoIFP(io) || IoTYPE(io) == IoTYPE_RDONLY) {
8c99d73e 1873 retval = -1;
51087808
NC		 1874 if (io && IoIFP(io))
1875 report_wrongway_fh(gv, '<');
1876 else
1877 report_evil_fh(gv);
b5fe5ca2 1878 SETERRNO(EBADF,RMS_IFI);
7d59b7e4
NIS		 1879 goto say_undef;
1880 }
1881
c9cb0f41
NC		 1882 /* Do this first to trigger any overloading. */
1883 buffer = SvPV_const(bufsv, blen);
1884 orig_blen_bytes = blen;
1885 doing_utf8 = DO_UTF8(bufsv);
1886
7d59b7e4 1887 if (PerlIO_isutf8(IoIFP(io))) {
6aa2f6a7 1888 if (!SvUTF8(bufsv)) {
c9cb0f41
NC		 1889 /* We don't modify the original scalar. */
1890 tmpbuf = bytes_to_utf8((const U8*) buffer, &blen);
1891 buffer = (char *) tmpbuf;
1892 doing_utf8 = TRUE;
1893 }
a0d0e21e 1894 }
c9cb0f41
NC		 1895 else if (doing_utf8) {
1896 STRLEN tmplen = blen;
a79db61d 1897 U8 * const result = bytes_from_utf8((const U8*) buffer, &tmplen, &doing_utf8);
c9cb0f41
NC		 1898 if (!doing_utf8) {
1899 tmpbuf = result;
1900 buffer = (char *) tmpbuf;
1901 blen = tmplen;
1902 }
1903 else {
1904 assert((char *)result == buffer);
1905 Perl_croak(aTHX_ "Wide character in %s", OP_DESC(PL_op));
1906 }
7d59b7e4
NIS		 1907 }
1908
e2712234 1909#ifdef HAS_SOCKET
7627e6d0 1910 if (op_type == OP_SEND) {
e2712234
NC		 1911 const int flags = SvIVx(*++MARK);
1912 if (SP > MARK) {
1913 STRLEN mlen;
1914 char * const sockbuf = SvPVx(*++MARK, mlen);
1915 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1916 flags, (struct sockaddr *)sockbuf, mlen);
1917 }
1918 else {
1919 retval
1920 = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, flags);
1921 }
7627e6d0
NC		 1922 }
1923 else
e2712234 1924#endif
7627e6d0 1925 {
c9cb0f41
NC		 1926 Size_t length = 0; /* This length is in characters. */
1927 STRLEN blen_chars;
7d59b7e4 1928 IV offset;
c9cb0f41
NC		 1929
1930 if (doing_utf8) {
1931 if (tmpbuf) {
1932 /* The SV is bytes, and we've had to upgrade it. */
1933 blen_chars = orig_blen_bytes;
1934 } else {
1935 /* The SV really is UTF-8. */
3f914778
FC		 1936 /* Don't call sv_len_utf8 on a magical or overloaded
1937 scalar, as we might get back a different result. */
1938 blen_chars = sv_or_pv_len_utf8(bufsv, buffer, blen);
c9cb0f41
NC		 1939 }
1940 } else {
1941 blen_chars = blen;
1942 }
1943
1944 if (MARK >= SP) {
1945 length = blen_chars;
1946 } else {
1947#if Size_t_size > IVSIZE
1948 length = (Size_t)SvNVx(*++MARK);
1949#else
1950 length = (Size_t)SvIVx(*++MARK);
1951#endif
4b0c4b6f
NC		 1952 if ((SSize_t)length < 0) {
1953 Safefree(tmpbuf);
c9cb0f41 1954 DIE(aTHX_ "Negative length");
4b0c4b6f 1955 }
7d59b7e4 1956 }
c9cb0f41 1957
bbce6d69 1958 if (MARK < SP) {
a0d0e21e 1959 offset = SvIVx(*++MARK);
bbce6d69 1960 if (offset < 0) {
4b0c4b6f
NC		 1961 if (-offset > (IV)blen_chars) {
1962 Safefree(tmpbuf);
cea2e8a9 1963 DIE(aTHX_ "Offset outside string");
4b0c4b6f 1964 }
c9cb0f41 1965 offset += blen_chars;
3c946528 1966 } else if (offset > (IV)blen_chars) {
4b0c4b6f 1967 Safefree(tmpbuf);
cea2e8a9 1968 DIE(aTHX_ "Offset outside string");
4b0c4b6f 1969 }
bbce6d69 1970 } else
a0d0e21e 1971 offset = 0;
c9cb0f41
NC		 1972 if (length > blen_chars - offset)
1973 length = blen_chars - offset;
1974 if (doing_utf8) {
1975 /* Here we convert length from characters to bytes. */
1976 if (tmpbuf || SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
1977 /* Either we had to convert the SV, or the SV is magical, or
1978 the SV has overloading, in which case we can't or mustn't
1979 or mustn't call it again. */
1980
1981 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
1982 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1983 } else {
1984 /* It's a real UTF-8 SV, and it's not going to change under
1985 us. Take advantage of any cache. */
1986 I32 start = offset;
1987 I32 len_I32 = length;
1988
1989 /* Convert the start and end character positions to bytes.
1990 Remember that the second argument to sv_pos_u2b is relative
1991 to the first. */
1992 sv_pos_u2b(bufsv, &start, &len_I32);
1993
1994 buffer += start;
1995 length = len_I32;
1996 }
7d59b7e4
NIS		 1997 }
1998 else {
1999 buffer = buffer+offset;
2000 }
a7092146 2001#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 2002 if (IoTYPE(io) == IoTYPE_SOCKET) {
8c99d73e 2003 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
7d59b7e4 2004 buffer, length, 0);
a7092146
GS		 2005 }
2006 else
2007#endif
2008 {
94e4c244 2009 /* See the note at doio.c:do_print about filesize limits. --jhi */
8c99d73e 2010 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
7d59b7e4 2011 buffer, length);
a7092146 2012 }
a0d0e21e 2013 }
c9cb0f41 2014
8c99d73e 2015 if (retval < 0)
a0d0e21e
LW		 2016 goto say_undef;
2017 SP = ORIGMARK;
c9cb0f41 2018 if (doing_utf8)
f36eea10 2019 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
4b0c4b6f 2020
a79db61d 2021 Safefree(tmpbuf);
8c99d73e
GS		 2022#if Size_t_size > IVSIZE
2023 PUSHn(retval);
2024#else
2025 PUSHi(retval);
2026#endif
a0d0e21e
LW		 2027 RETURN;
2028
2029 say_undef:
a79db61d 2030 Safefree(tmpbuf);
a0d0e21e
LW		 2031 SP = ORIGMARK;
2032 RETPUSHUNDEF;
2033}
2034
a0d0e21e
LW		 2035PP(pp_eof)
2036{
27da23d5 2037 dVAR; dSP;
a0d0e21e 2038 GV *gv;
32e65323 2039 IO *io;
a5e1d062 2040 const MAGIC *mg;
bc0c81ca
NC		 2041 /*
2042 * in Perl 5.12 and later, the additional parameter is a bitmask:
2043 * 0 = eof
2044 * 1 = eof(FH)
2045 * 2 = eof() <- ARGV magic
2046 *
2047 * I'll rely on the compiler's trace flow analysis to decide whether to
2048 * actually assign this out here, or punt it into the only block where it is
2049 * used. Doing it out here is DRY on the condition logic.
2050 */
2051 unsigned int which;
a0d0e21e 2052
bc0c81ca 2053 if (MAXARG) {
32e65323 2054 gv = PL_last_in_gv = MUTABLE_GV(POPs); /* eof(FH) */
bc0c81ca
NC		 2055 which = 1;
2056 }
b5f55170
NC		 2057 else {
2058 EXTEND(SP, 1);
2059
bc0c81ca 2060 if (PL_op->op_flags & OPf_SPECIAL) {
b5f55170 2061 gv = PL_last_in_gv = GvEGVx(PL_argvgv); /* eof() - ARGV magic */
bc0c81ca
NC		 2062 which = 2;
2063 }
2064 else {
b5f55170 2065 gv = PL_last_in_gv; /* eof */
bc0c81ca
NC		 2066 which = 0;
2067 }
b5f55170 2068 }
32e65323
CS		 2069
2070 if (!gv)
2071 RETPUSHNO;
2072
2073 if ((io = GvIO(gv)) && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) {
3e0cb5de 2074 return tied_method1(SV_CONST(EOF), SP, MUTABLE_SV(io), mg, newSVuv(which));
146174a9 2075 }
4592e6ca 2076
32e65323
CS		 2077 if (!MAXARG && (PL_op->op_flags & OPf_SPECIAL)) { /* eof() */
2078 if (io && !IoIFP(io)) {
2079 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
2080 IoLINES(io) = 0;
2081 IoFLAGS(io) &= ~IOf_START;
2082 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, NULL);
2083 if (GvSV(gv))
2084 sv_setpvs(GvSV(gv), "-");
2085 else
2086 GvSV(gv) = newSVpvs("-");
2087 SvSETMAGIC(GvSV(gv));
2088 }
2089 else if (!nextargv(gv))
2090 RETPUSHYES;
6136c704 2091 }
4592e6ca
NIS		 2092 }
2093
32e65323 2094 PUSHs(boolSV(do_eof(gv)));
a0d0e21e
LW		 2095 RETURN;
2096}
2097
2098PP(pp_tell)
2099{
27da23d5 2100 dVAR; dSP; dTARGET;
301e8125 2101 GV *gv;
5b468f54 2102 IO *io;
a0d0e21e 2103
b64a1294 2104 if (MAXARG != 0 && (TOPs || POPs))
159b6efe 2105 PL_last_in_gv = MUTABLE_GV(POPs);
ac3697cd
NC		 2106 else
2107 EXTEND(SP, 1);
c4420975 2108 gv = PL_last_in_gv;
4592e6ca 2109
9c9f25b8
NC		 2110 io = GvIO(gv);
2111 if (io) {
a5e1d062 2112 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2113 if (mg) {
3e0cb5de 2114 return tied_method0(SV_CONST(TELL), SP, MUTABLE_SV(io), mg);
a79db61d 2115 }
4592e6ca 2116 }
f4817f32 2117 else if (!gv) {
f03173f2
RGS		 2118 if (!errno)
2119 SETERRNO(EBADF,RMS_IFI);
2120 PUSHi(-1);
2121 RETURN;
2122 }
4592e6ca 2123
146174a9
CB		 2124#if LSEEKSIZE > IVSIZE
2125 PUSHn( do_tell(gv) );
2126#else
a0d0e21e 2127 PUSHi( do_tell(gv) );
146174a9 2128#endif
a0d0e21e
LW		 2129 RETURN;
2130}
2131
137443ea 2132PP(pp_sysseek)
2133{
27da23d5 2134 dVAR; dSP;
1df70142 2135 const int whence = POPi;
146174a9 2136#if LSEEKSIZE > IVSIZE
7452cf6a 2137 const Off_t offset = (Off_t)SvNVx(POPs);
146174a9 2138#else
7452cf6a 2139 const Off_t offset = (Off_t)SvIVx(POPs);
146174a9 2140#endif
a0d0e21e 2141
159b6efe 2142 GV * const gv = PL_last_in_gv = MUTABLE_GV(POPs);
9c9f25b8 2143 IO *const io = GvIO(gv);
4592e6ca 2144
9c9f25b8 2145 if (io) {
a5e1d062 2146 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2147 if (mg) {
cb50131a 2148#if LSEEKSIZE > IVSIZE
74f0b550 2149 SV *const offset_sv = newSVnv((NV) offset);
cb50131a 2150#else
74f0b550 2151 SV *const offset_sv = newSViv(offset);
cb50131a 2152#endif
bc0c81ca 2153
3e0cb5de 2154 return tied_method2(SV_CONST(SEEK), SP, MUTABLE_SV(io), mg, offset_sv,
d682515d 2155 newSViv(whence));
a79db61d 2156 }
4592e6ca
NIS		 2157 }
2158
533c011a 2159 if (PL_op->op_type == OP_SEEK)
8903cb82 2160 PUSHs(boolSV(do_seek(gv, offset, whence)));
2161 else {
0bcc34c2 2162 const Off_t sought = do_sysseek(gv, offset, whence);
b448e4fe 2163 if (sought < 0)
146174a9
CB		 2164 PUSHs(&PL_sv_undef);
2165 else {
7452cf6a 2166 SV* const sv = sought ?
146174a9 2167#if LSEEKSIZE > IVSIZE
b448e4fe 2168 newSVnv((NV)sought)
146174a9 2169#else
b448e4fe 2170 newSViv(sought)
146174a9
CB		 2171#endif
2172 : newSVpvn(zero_but_true, ZBTLEN);
6e449a3a 2173 mPUSHs(sv);
146174a9 2174 }
8903cb82 2175 }
a0d0e21e
LW		 2176 RETURN;
2177}
2178
2179PP(pp_truncate)
2180{
97aff369 2181 dVAR;
39644a26 2182 dSP;
8c99d73e
GS		 2183 /* There seems to be no consensus on the length type of truncate()
2184 * and ftruncate(), both off_t and size_t have supporters. In
2185 * general one would think that when using large files, off_t is
2186 * at least as wide as size_t, so using an off_t should be okay. */
2187 /* XXX Configure probe for the length type of *truncate() needed XXX */
0bcc34c2 2188 Off_t len;
a0d0e21e 2189
25342a55 2190#if Off_t_size > IVSIZE
0bcc34c2 2191 len = (Off_t)POPn;
8c99d73e 2192#else
0bcc34c2 2193 len = (Off_t)POPi;
8c99d73e
GS		 2194#endif
2195 /* Checking for length < 0 is problematic as the type might or
301e8125 2196 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 2197 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2198 SETERRNO(0,0);
d05c1ba0 2199 {
5e0adc2d 2200 SV * const sv = POPs;
d05c1ba0
JH		 2201 int result = 1;
2202 GV *tmpgv;
090bf15b
SR		 2203 IO *io;
2204
42409c40
FC		 2205 if (PL_op->op_flags & OPf_SPECIAL
2206 ? (tmpgv = gv_fetchsv(sv, 0, SVt_PVIO), 1)
2207 : !!(tmpgv = MAYBE_DEREF_GV(sv)) ) {
9c9f25b8
NC		 2208 io = GvIO(tmpgv);
2209 if (!io)
090bf15b 2210 result = 0;
d05c1ba0 2211 else {
090bf15b 2212 PerlIO *fp;
090bf15b
SR		 2213 do_ftruncate_io:
2214 TAINT_PROPER("truncate");
2215 if (!(fp = IoIFP(io))) {
2216 result = 0;
2217 }
2218 else {
2219 PerlIO_flush(fp);
cbdc8872 2220#ifdef HAS_TRUNCATE
090bf15b 2221 if (ftruncate(PerlIO_fileno(fp), len) < 0)
301e8125 2222#else
090bf15b 2223 if (my_chsize(PerlIO_fileno(fp), len) < 0)
cbdc8872 2224#endif
090bf15b
SR		 2225 result = 0;
2226 }
d05c1ba0 2227 }
cbdc8872 2228 }
5e0adc2d 2229 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2230 io = MUTABLE_IO(SvRV(sv)); /* *main::FRED{IO} for example */
090bf15b 2231 goto do_ftruncate_io;
5e0adc2d
FC		 2232 }
2233 else {
2234 const char * const name = SvPV_nomg_const_nolen(sv);
d05c1ba0 2235 TAINT_PROPER("truncate");
cbdc8872 2236#ifdef HAS_TRUNCATE
d05c1ba0
JH		 2237 if (truncate(name, len) < 0)
2238 result = 0;
cbdc8872 2239#else
d05c1ba0 2240 {
7452cf6a 2241 const int tmpfd = PerlLIO_open(name, O_RDWR);
d05c1ba0 2242
7452cf6a 2243 if (tmpfd < 0)
cbdc8872 2244 result = 0;
d05c1ba0
JH		 2245 else {
2246 if (my_chsize(tmpfd, len) < 0)
2247 result = 0;
2248 PerlLIO_close(tmpfd);
2249 }
cbdc8872 2250 }
a0d0e21e 2251#endif
d05c1ba0 2252 }
a0d0e21e 2253
d05c1ba0
JH		 2254 if (result)
2255 RETPUSHYES;
2256 if (!errno)
93189314 2257 SETERRNO(EBADF,RMS_IFI);
d05c1ba0
JH		 2258 RETPUSHUNDEF;
2259 }
a0d0e21e
LW		 2260}
2261
a0d0e21e
LW		 2262PP(pp_ioctl)
2263{
97aff369 2264 dVAR; dSP; dTARGET;
7452cf6a 2265 SV * const argsv = POPs;
1df70142 2266 const unsigned int func = POPu;
e1ec3a88 2267 const int optype = PL_op->op_type;
159b6efe 2268 GV * const gv = MUTABLE_GV(POPs);
8a6c0fcb 2269 IO * const io = GvIOn(gv);
a0d0e21e 2270 char *s;
324aa91a 2271 IV retval;
a0d0e21e 2272
8a6c0fcb 2273 if (!IoIFP(io)) {
51087808 2274 report_evil_fh(gv);
93189314 2275 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
a0d0e21e
LW		 2276 RETPUSHUNDEF;
2277 }
2278
748a9306 2279 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2280 STRLEN len;
324aa91a 2281 STRLEN need;
748a9306 2282 s = SvPV_force(argsv, len);
324aa91a
HF		 2283 need = IOCPARM_LEN(func);
2284 if (len < need) {
2285 s = Sv_Grow(argsv, need + 1);
2286 SvCUR_set(argsv, need);
a0d0e21e
LW		 2287 }
2288
748a9306 2289 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW		 2290 }
2291 else {
748a9306 2292 retval = SvIV(argsv);
c529f79d 2293 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW		 2294 }
2295
ed4b2e6b 2296 TAINT_PROPER(PL_op_desc[optype]);
a0d0e21e
LW		 2297
2298 if (optype == OP_IOCTL)
2299#ifdef HAS_IOCTL
76e3520e 2300 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2301#else
cea2e8a9 2302 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW		 2303#endif
2304 else
c214f4ad
WB		 2305#ifndef HAS_FCNTL
2306 DIE(aTHX_ "fcntl is not implemented");
2307#else
55497cff 2308#if defined(OS2) && defined(__EMX__)
760ac839 2309 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2310#else
760ac839 2311 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2312#endif
6652bd42 2313#endif
a0d0e21e 2314
6652bd42 2315#if defined(HAS_IOCTL) || defined(HAS_FCNTL)
748a9306
LW		 2316 if (SvPOK(argsv)) {
2317 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2318 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
53e06cf0 2319 OP_NAME(PL_op));
748a9306
LW		 2320 s[SvCUR(argsv)] = 0; /* put our null back */
2321 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW		 2322 }
2323
2324 if (retval == -1)
2325 RETPUSHUNDEF;
2326 if (retval != 0) {
2327 PUSHi(retval);
2328 }
2329 else {
8903cb82 2330 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e 2331 }
4808266b 2332#endif
c214f4ad 2333 RETURN;
a0d0e21e
LW		 2334}
2335
2336PP(pp_flock)
2337{
9cad6237 2338#ifdef FLOCK
97aff369 2339 dVAR; dSP; dTARGET;
a0d0e21e 2340 I32 value;
7452cf6a 2341 const int argtype = POPi;
1f28cbca 2342 GV * const gv = MUTABLE_GV(POPs);
9c9f25b8
NC		 2343 IO *const io = GvIO(gv);
2344 PerlIO *const fp = io ? IoIFP(io) : NULL;
16d20bd9 2345
0bcc34c2 2346 /* XXX Looks to me like io is always NULL at this point */
a0d0e21e 2347 if (fp) {
68dc0745 2348 (void)PerlIO_flush(fp);
76e3520e 2349 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2350 }
cb50131a 2351 else {
51087808 2352 report_evil_fh(gv);
a0d0e21e 2353 value = 0;
93189314 2354 SETERRNO(EBADF,RMS_IFI);
cb50131a 2355 }
a0d0e21e
LW		 2356 PUSHi(value);
2357 RETURN;
2358#else
cea2e8a9 2359 DIE(aTHX_ PL_no_func, "flock()");
a0d0e21e
LW		 2360#endif
2361}
2362
2363/* Sockets. */
2364
7627e6d0
NC		 2365#ifdef HAS_SOCKET
2366
a0d0e21e
LW		 2367PP(pp_socket)
2368{
97aff369 2369 dVAR; dSP;
7452cf6a
AL		 2370 const int protocol = POPi;
2371 const int type = POPi;
2372 const int domain = POPi;
159b6efe 2373 GV * const gv = MUTABLE_GV(POPs);
5805b585 2374 IO * const io = GvIOn(gv);
a0d0e21e
LW		 2375 int fd;
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
LW		 2396
2397 RETPUSHYES;
a0d0e21e 2398}
7627e6d0 2399#endif
a0d0e21e
LW		 2400
2401PP(pp_sockpair)
2402{
c95c94b1 2403#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
97aff369 2404 dVAR; dSP;
e0b7b5e2 2405 int fd[2];
7452cf6a
AL		 2406 const int protocol = POPi;
2407 const int type = POPi;
2408 const int domain = POPi;
e0b7b5e2 2409
159b6efe 2410 GV * const gv2 = MUTABLE_GV(POPs);
49561e08
FC		 2411 IO * const io2 = GvIOn(gv2);
2412 GV * const gv1 = MUTABLE_GV(POPs);
2413 IO * const io1 = GvIOn(gv1);
a0d0e21e 2414
49561e08 2415 if (IoIFP(io1))
dc0d0a5f 2416 do_close(gv1, FALSE);
49561e08 2417 if (IoIFP(io2))
dc0d0a5f 2418 do_close(gv2, FALSE);
57171420 2419
a0d0e21e 2420 TAINT_PROPER("socketpair");
6ad3d225 2421 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
a0d0e21e 2422 RETPUSHUNDEF;
460c8493
IZ		 2423 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2424 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
50952442 2425 IoTYPE(io1) = IoTYPE_SOCKET;
460c8493
IZ		 2426 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2427 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
50952442 2428 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2429 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW		 2430 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2431 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2432 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW		 2433 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2434 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2435 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW		 2436 RETPUSHUNDEF;
2437 }
8d2a6795
GS		 2438#if defined(HAS_FCNTL) && defined(F_SETFD)
2439 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2440 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2441#endif
a0d0e21e
LW		 2442
2443 RETPUSHYES;
2444#else
cea2e8a9 2445 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW		 2446#endif
2447}
2448
7627e6d0
NC		 2449#ifdef HAS_SOCKET
2450
a0d0e21e
LW		 2451PP(pp_bind)
2452{
97aff369 2453 dVAR; dSP;
7452cf6a 2454 SV * const addrsv = POPs;
349d4f2f
NC		 2455 /* OK, so on what platform does bind modify addr? */
2456 const char *addr;
159b6efe 2457 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2458 IO * const io = GvIOn(gv);
a0d0e21e 2459 STRLEN len;
e0b7b5e2 2460 int op_type;
a0d0e21e 2461
8a6c0fcb 2462 if (!IoIFP(io))
a0d0e21e
LW		 2463 goto nuts;
2464
349d4f2f 2465 addr = SvPV_const(addrsv, len);
e0b7b5e2 2466 op_type = PL_op->op_type;
32b81f04
NC		 2467 TAINT_PROPER(PL_op_desc[op_type]);
2468 if ((op_type == OP_BIND
2469 ? PerlSock_bind(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len)
2470 : PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len))
2471 >= 0)
a0d0e21e
LW		 2472 RETPUSHYES;
2473 else
2474 RETPUSHUNDEF;
2475
2476nuts:
fbcda526 2477 report_evil_fh(gv);
93189314 2478 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2479 RETPUSHUNDEF;
a0d0e21e
LW		 2480}
2481
2482PP(pp_listen)
2483{
97aff369 2484 dVAR; dSP;
7452cf6a 2485 const int backlog = POPi;
159b6efe 2486 GV * const gv = MUTABLE_GV(POPs);
8a6c0fcb 2487 IO * const io = GvIOn(gv);
a0d0e21e 2488
8a6c0fcb 2489 if (!IoIFP(io))
a0d0e21e
LW		 2490 goto nuts;
2491
6ad3d225 2492 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW		 2493 RETPUSHYES;
2494 else
2495 RETPUSHUNDEF;
2496
2497nuts:
fbcda526 2498 report_evil_fh(gv);
93189314 2499 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2500 RETPUSHUNDEF;
a0d0e21e
LW		 2501}
2502
2503PP(pp_accept)
2504{
97aff369 2505 dVAR; dSP; dTARGET;
eb578fdb 2506 IO *nstio;
93d47a36 2507 char namebuf[MAXPATHLEN];
b5afd346 2508#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
93d47a36
JH		 2509 Sock_size_t len = sizeof (struct sockaddr_in);
2510#else
2511 Sock_size_t len = sizeof namebuf;
2512#endif
159b6efe
NC		 2513 GV * const ggv = MUTABLE_GV(POPs);
2514 GV * const ngv = MUTABLE_GV(POPs);
a0d0e21e
LW		 2515 int fd;
2516
8a6c0fcb 2517 IO * const gstio = GvIO(ggv);
a0d0e21e
LW		 2518 if (!gstio || !IoIFP(gstio))
2519 goto nuts;
2520
2521 nstio = GvIOn(ngv);
93d47a36 2522 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
e294cc5d
JH		 2523#if defined(OEMVS)
2524 if (len == 0) {
2525 /* Some platforms indicate zero length when an AF_UNIX client is
2526 * not bound. Simulate a non-zero-length sockaddr structure in
2527 * this case. */
2528 namebuf[0] = 0; /* sun_len */
2529 namebuf[1] = AF_UNIX; /* sun_family */
2530 len = 2;
2531 }
2532#endif
2533
a0d0e21e
LW		 2534 if (fd < 0)
2535 goto badexit;
a70048fb
AB		 2536 if (IoIFP(nstio))
2537 do_close(ngv, FALSE);
460c8493
IZ		 2538 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2539 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2540 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2541 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW		 2542 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2543 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2544 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW		 2545 goto badexit;
2546 }
8d2a6795
GS		 2547#if defined(HAS_FCNTL) && defined(F_SETFD)
2548 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2549#endif
a0d0e21e 2550
381c1bae 2551#ifdef __SCO_VERSION__
93d47a36 2552 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
381c1bae 2553#endif
ed79a026 2554
93d47a36 2555 PUSHp(namebuf, len);
a0d0e21e
LW		 2556 RETURN;
2557
2558nuts:
fbcda526 2559 report_evil_fh(ggv);
93189314 2560 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2561
2562badexit:
2563 RETPUSHUNDEF;
2564
a0d0e21e
LW		 2565}
2566
2567PP(pp_shutdown)
2568{
97aff369 2569 dVAR; dSP; dTARGET;
7452cf6a 2570 const int how = POPi;
159b6efe 2571 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2572 IO * const io = GvIOn(gv);
a0d0e21e 2573
8a6c0fcb 2574 if (!IoIFP(io))
a0d0e21e
LW		 2575 goto nuts;
2576
6ad3d225 2577 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW		 2578 RETURN;
2579
2580nuts:
fbcda526 2581 report_evil_fh(gv);
93189314 2582 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2583 RETPUSHUNDEF;
a0d0e21e
LW		 2584}
2585
a0d0e21e
LW		 2586PP(pp_ssockopt)
2587{
97aff369 2588 dVAR; dSP;
7452cf6a 2589 const int optype = PL_op->op_type;
561b68a9 2590 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
7452cf6a
AL		 2591 const unsigned int optname = (unsigned int) POPi;
2592 const unsigned int lvl = (unsigned int) POPi;
159b6efe 2593 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2594 IO * const io = GvIOn(gv);
a0d0e21e 2595 int fd;
1e422769 2596 Sock_size_t len;
a0d0e21e 2597
a0d0e21e
LW		 2598 if (!io || !IoIFP(io))
2599 goto nuts;
2600
760ac839 2601 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2602 switch (optype) {
2603 case OP_GSOCKOPT:
748a9306 2604 SvGROW(sv, 257);
a0d0e21e 2605 (void)SvPOK_only(sv);
748a9306
LW		 2606 SvCUR_set(sv,256);
2607 *SvEND(sv) ='\0';
1e422769 2608 len = SvCUR(sv);
6ad3d225 2609 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2610 goto nuts2;
1e422769 2611 SvCUR_set(sv, len);
748a9306 2612 *SvEND(sv) ='\0';
a0d0e21e
LW		 2613 PUSHs(sv);
2614 break;
2615 case OP_SSOCKOPT: {
1215b447
JH		 2616#if defined(__SYMBIAN32__)
2617# define SETSOCKOPT_OPTION_VALUE_T void *
2618#else
2619# define SETSOCKOPT_OPTION_VALUE_T const char *
2620#endif
2621 /* XXX TODO: We need to have a proper type (a Configure probe,
2622 * etc.) for what the C headers think of the third argument of
2623 * setsockopt(), the option_value read-only buffer: is it
2624 * a "char *", or a "void *", const or not. Some compilers
2625 * don't take kindly to e.g. assuming that "char *" implicitly
2626 * promotes to a "void *", or to explicitly promoting/demoting
2627 * consts to non/vice versa. The "const void *" is the SUS
2628 * definition, but that does not fly everywhere for the above
2629 * reasons. */
2630 SETSOCKOPT_OPTION_VALUE_T buf;
1e422769 2631 int aint;
2632 if (SvPOKp(sv)) {
2d8e6c8d 2633 STRLEN l;
1215b447 2634 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2d8e6c8d 2635 len = l;
1e422769 2636 }
56ee1660 2637 else {
a0d0e21e 2638 aint = (int)SvIV(sv);
1215b447 2639 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
a0d0e21e
LW		 2640 len = sizeof(int);
2641 }
6ad3d225 2642 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2643 goto nuts2;
3280af22 2644 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 2645 }
2646 break;
2647 }
2648 RETURN;
2649
2650nuts:
fbcda526 2651 report_evil_fh(gv);
93189314 2652 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2653nuts2:
2654 RETPUSHUNDEF;
2655
a0d0e21e
LW		 2656}
2657
a0d0e21e
LW		 2658PP(pp_getpeername)
2659{
97aff369 2660 dVAR; dSP;
7452cf6a 2661 const int optype = PL_op->op_type;
159b6efe 2662 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2663 IO * const io = GvIOn(gv);
7452cf6a 2664 Sock_size_t len;
a0d0e21e
LW		 2665 SV *sv;
2666 int fd;
a0d0e21e
LW		 2667
2668 if (!io || !IoIFP(io))
2669 goto nuts;
2670
561b68a9 2671 sv = sv_2mortal(newSV(257));
748a9306 2672 (void)SvPOK_only(sv);
1e422769 2673 len = 256;
2674 SvCUR_set(sv, len);
748a9306 2675 *SvEND(sv) ='\0';
760ac839 2676 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2677 switch (optype) {
2678 case OP_GETSOCKNAME:
6ad3d225 2679 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW		 2680 goto nuts2;
2681 break;
2682 case OP_GETPEERNAME:
6ad3d225 2683 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2684 goto nuts2;
490ab354
JH		 2685#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2686 {
2687 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";
2688 /* If the call succeeded, make sure we don't have a zeroed port/addr */
349d4f2f 2689 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2fbb330f 2690 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
490ab354 2691 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2692 goto nuts2;
490ab354
JH		 2693 }
2694 }
2695#endif
a0d0e21e
LW		 2696 break;
2697 }
13826f2c
CS		 2698#ifdef BOGUS_GETNAME_RETURN
2699 /* Interactive Unix, getpeername() and getsockname()
2700 does not return valid namelen */
1e422769 2701 if (len == BOGUS_GETNAME_RETURN)
2702 len = sizeof(struct sockaddr);
13826f2c 2703#endif
1e422769 2704 SvCUR_set(sv, len);
748a9306 2705 *SvEND(sv) ='\0';
a0d0e21e
LW		 2706 PUSHs(sv);
2707 RETURN;
2708
2709nuts:
fbcda526 2710 report_evil_fh(gv);
93189314 2711 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2712nuts2:
2713 RETPUSHUNDEF;
7627e6d0 2714}
a0d0e21e 2715
a0d0e21e 2716#endif
a0d0e21e
LW		 2717
2718/* Stat calls. */
2719
a0d0e21e
LW		 2720PP(pp_stat)
2721{
97aff369 2722 dVAR;
39644a26 2723 dSP;
10edeb5d 2724 GV *gv = NULL;
55dd8d50 2725 IO *io = NULL;
54310121 2726 I32 gimme;
a0d0e21e 2727 I32 max = 13;
109c43ed 2728 SV* sv;
a0d0e21e 2729
109c43ed
FC		 2730 if (PL_op->op_flags & OPf_REF ? (gv = cGVOP_gv, 1)
2731 : !!(sv=POPs, gv = MAYBE_DEREF_GV(sv))) {
8a4e5b40 2732 if (PL_op->op_type == OP_LSTAT) {
5d3e98de 2733 if (gv != PL_defgv) {
5d329e6e 2734 do_fstat_warning_check:
a2a5de95 2735 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
93fad930
FC		 2736 "lstat() on filehandle%s%"SVf,
2737 gv ? " " : "",
2738 SVfARG(gv
bf29d05f
BF		 2739 ? sv_2mortal(newSVhek(GvENAME_HEK(gv)))
2740 : &PL_sv_no));
5d3e98de 2741 } else if (PL_laststype != OP_LSTAT)
b042df57 2742 /* diag_listed_as: The stat preceding %s wasn't an lstat */
8a4e5b40 2743 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
8a4e5b40
DD		 2744 }
2745
2dd78f96 2746 if (gv != PL_defgv) {
b8413ac3 2747 bool havefp;
0d5064f1 2748 do_fstat_have_io:
b8413ac3 2749 havefp = FALSE;
3280af22 2750 PL_laststype = OP_STAT;
0d5064f1 2751 PL_statgv = gv ? gv : (GV *)io;
76f68e9b 2752 sv_setpvs(PL_statname, "");
5228a96c 2753 if(gv) {
ad02613c 2754 io = GvIO(gv);
0d5064f1
FC		 2755 }
2756 if (io) {
5228a96c
SP		 2757 if (IoIFP(io)) {
2758 PL_laststatval =
2759 PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
8080e3c8 2760 havefp = TRUE;
5228a96c 2761 } else if (IoDIRP(io)) {
5228a96c 2762 PL_laststatval =
3497a01f 2763 PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache);
8080e3c8 2764 havefp = TRUE;
5228a96c
SP		 2765 } else {
2766 PL_laststatval = -1;
2767 }
5228a96c 2768 }
05bb32d2 2769 else PL_laststatval = -1;
daa30a68 2770 if (PL_laststatval < 0 && !havefp) report_evil_fh(gv);
5228a96c
SP		 2771 }
2772
9ddeeac9 2773 if (PL_laststatval < 0) {
a0d0e21e 2774 max = 0;
9ddeeac9 2775 }
a0d0e21e
LW		 2776 }
2777 else {
109c43ed 2778 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2779 io = MUTABLE_IO(SvRV(sv));
ad02613c
SP		 2780 if (PL_op->op_type == OP_LSTAT)
2781 goto do_fstat_warning_check;
2782 goto do_fstat_have_io;
2783 }
2784
4bac9ae4 2785 SvTAINTED_off(PL_statname); /* previous tainting irrelevant */
109c43ed 2786 sv_setpv(PL_statname, SvPV_nomg_const_nolen(sv));
a0714e2c 2787 PL_statgv = NULL;
533c011a
NIS		 2788 PL_laststype = PL_op->op_type;
2789 if (PL_op->op_type == OP_LSTAT)
0510663f 2790 PL_laststatval = PerlLIO_lstat(SvPV_nolen_const(PL_statname), &PL_statcache);
a0d0e21e 2791 else
0510663f 2792 PL_laststatval = PerlLIO_stat(SvPV_nolen_const(PL_statname), &PL_statcache);
3280af22 2793 if (PL_laststatval < 0) {
5d37acd6
DM		 2794 if (ckWARN(WARN_NEWLINE) &&
2795 strchr(SvPV_nolen_const(PL_statname), '\n'))
2796 {
2797 /* PL_warn_nl is constant */
2798 GCC_DIAG_IGNORE(-Wformat-nonliteral);
9014280d 2799 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
5d37acd6
DM		 2800 GCC_DIAG_RESTORE;
2801 }
a0d0e21e
LW		 2802 max = 0;
2803 }
2804 }
2805
54310121 2806 gimme = GIMME_V;
2807 if (gimme != G_ARRAY) {
2808 if (gimme != G_VOID)
2809 XPUSHs(boolSV(max));
2810 RETURN;
a0d0e21e
LW		 2811 }
2812 if (max) {
36477c24 2813 EXTEND(SP, max);
2814 EXTEND_MORTAL(max);
6e449a3a 2815 mPUSHi(PL_statcache.st_dev);
8d8cba88
TC		 2816#if ST_INO_SIZE > IVSIZE
2817 mPUSHn(PL_statcache.st_ino);
2818#else
2819# if ST_INO_SIGN <= 0
6e449a3a 2820 mPUSHi(PL_statcache.st_ino);
8d8cba88
TC		 2821# else
2822 mPUSHu(PL_statcache.st_ino);
2823# endif
2824#endif
6e449a3a
MHM		 2825 mPUSHu(PL_statcache.st_mode);
2826 mPUSHu(PL_statcache.st_nlink);
dfff4baf
BF		 2827
2828 sv_setuid(PUSHmortal, PL_statcache.st_uid);
2829 sv_setgid(PUSHmortal, PL_statcache.st_gid);
2830
cbdc8872 2831#ifdef USE_STAT_RDEV
6e449a3a 2832 mPUSHi(PL_statcache.st_rdev);
cbdc8872 2833#else
84bafc02 2834 PUSHs(newSVpvs_flags("", SVs_TEMP));
cbdc8872 2835#endif
146174a9 2836#if Off_t_size > IVSIZE
6e449a3a 2837 mPUSHn(PL_statcache.st_size);
146174a9 2838#else
6e449a3a 2839 mPUSHi(PL_statcache.st_size);
146174a9 2840#endif
cbdc8872 2841#ifdef BIG_TIME
6e449a3a
MHM		 2842 mPUSHn(PL_statcache.st_atime);
2843 mPUSHn(PL_statcache.st_mtime);
2844 mPUSHn(PL_statcache.st_ctime);
cbdc8872 2845#else
6e449a3a
MHM		 2846 mPUSHi(PL_statcache.st_atime);
2847 mPUSHi(PL_statcache.st_mtime);
2848 mPUSHi(PL_statcache.st_ctime);
cbdc8872 2849#endif
a0d0e21e 2850#ifdef USE_STAT_BLOCKS
6e449a3a
MHM		 2851 mPUSHu(PL_statcache.st_blksize);
2852 mPUSHu(PL_statcache.st_blocks);
a0d0e21e 2853#else
84bafc02
NC		 2854 PUSHs(newSVpvs_flags("", SVs_TEMP));
2855 PUSHs(newSVpvs_flags("", SVs_TEMP));
a0d0e21e
LW		 2856#endif
2857 }
2858 RETURN;
2859}
2860
6c48f025
NC		 2861/* All filetest ops avoid manipulating the perl stack pointer in their main
2862 bodies (since commit d2c4d2d1e22d3125), and return using either
2863 S_ft_return_false() or S_ft_return_true(). These two helper functions are
2864 the only two which manipulate the perl stack. To ensure that no stack
2865 manipulation macros are used, the filetest ops avoid defining a local copy
2866 of the stack pointer with dSP. */
2867
8db8f6b6
FC		 2868/* If the next filetest is stacked up with this one
2869 (PL_op->op_private & OPpFT_STACKING), we leave
2870 the original argument on the stack for success,
2871 and skip the stacked operators on failure.
2872 The next few macros/functions take care of this.
2873*/
2874
2875static OP *
9a6b02e8 2876S_ft_return_false(pTHX_ SV *ret) {
8db8f6b6 2877 OP *next = NORMAL;
697f9d37
NC		 2878 dSP;
2879
226b9201 2880 if (PL_op->op_flags & OPf_REF) XPUSHs(ret);
8db8f6b6
FC		 2881 else SETs(ret);
2882 PUTBACK;
697f9d37 2883
9a6b02e8
NC		 2884 if (PL_op->op_private & OPpFT_STACKING) {
2885 while (OP_IS_FILETEST(next->op_type)
2886 && next->op_private & OPpFT_STACKED)
2887 next = next->op_next;
2888 }
8db8f6b6
FC		 2889 return next;
2890}
2891
07ed4d4b
NC		 2892PERL_STATIC_INLINE OP *
2893S_ft_return_true(pTHX_ SV *ret) {
2894 dSP;
2895 if (PL_op->op_flags & OPf_REF)
2896 XPUSHs(PL_op->op_private & OPpFT_STACKING ? (SV *)cGVOP_gv : (ret));
2897 else if (!(PL_op->op_private & OPpFT_STACKING))
2898 SETs(ret);
2899 PUTBACK;
2900 return NORMAL;
2901}
8db8f6b6 2902
48d023d6
NC		 2903#define FT_RETURNNO return S_ft_return_false(aTHX_ &PL_sv_no)
2904#define FT_RETURNUNDEF return S_ft_return_false(aTHX_ &PL_sv_undef)
2905#define FT_RETURNYES return S_ft_return_true(aTHX_ &PL_sv_yes)
8db8f6b6 2906
6f1401dc 2907#define tryAMAGICftest_MG(chr) STMT_START { \
d2f67720 2908 if ( (SvFLAGS(*PL_stack_sp) & (SVf_ROK|SVs_GMG)) \
8db8f6b6
FC		 2909 && PL_op->op_flags & OPf_KIDS) { \
2910 OP *next = S_try_amagic_ftest(aTHX_ chr); \
2911 if (next) return next; \
2912 } \
6f1401dc
DM		 2913 } STMT_END
2914
8db8f6b6 2915STATIC OP *
6f1401dc
DM		 2916S_try_amagic_ftest(pTHX_ char chr) {
2917 dVAR;
d2f67720 2918 SV *const arg = *PL_stack_sp;
6f1401dc
DM		 2919
2920 assert(chr != '?');
c5780028 2921 if (!(PL_op->op_private & OPpFT_STACKING)) SvGETMAGIC(arg);
6f1401dc 2922
d2f67720 2923 if (SvAMAGIC(arg))
6f1401dc
DM		 2924 {
2925 const char tmpchr = chr;
6f1401dc
DM		 2926 SV * const tmpsv = amagic_call(arg,
2927 newSVpvn_flags(&tmpchr, 1, SVs_TEMP),
2928 ftest_amg, AMGf_unary);
2929
2930 if (!tmpsv)
8db8f6b6 2931 return NULL;
6f1401dc 2932
48d023d6
NC		 2933 return SvTRUE(tmpsv)
2934 ? S_ft_return_true(aTHX_ tmpsv) : S_ft_return_false(aTHX_ tmpsv);
6f1401dc 2935 }
8db8f6b6 2936 return NULL;
6f1401dc
DM		 2937}
2938
2939
a0d0e21e
LW		 2940PP(pp_ftrread)
2941{
97aff369 2942 dVAR;
9cad6237 2943 I32 result;
af9e49b4
NC		 2944 /* Not const, because things tweak this below. Not bool, because there's
2945 no guarantee that OPp_FT_ACCESS is <= CHAR_MAX */
2946#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2947 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
2948 /* Giving some sort of initial value silences compilers. */
2949# ifdef R_OK
2950 int access_mode = R_OK;
2951# else
2952 int access_mode = 0;
2953# endif
5ff3f7a4 2954#else
af9e49b4
NC		 2955 /* access_mode is never used, but leaving use_access in makes the
2956 conditional compiling below much clearer. */
2957 I32 use_access = 0;
5ff3f7a4 2958#endif
2dcac756 2959 Mode_t stat_mode = S_IRUSR;
a0d0e21e 2960
af9e49b4 2961 bool effective = FALSE;
07fe7c6a 2962 char opchar = '?';
af9e49b4 2963
7fb13887
BM		 2964 switch (PL_op->op_type) {
2965 case OP_FTRREAD: opchar = 'R'; break;
2966 case OP_FTRWRITE: opchar = 'W'; break;
2967 case OP_FTREXEC: opchar = 'X'; break;
2968 case OP_FTEREAD: opchar = 'r'; break;
2969 case OP_FTEWRITE: opchar = 'w'; break;
2970 case OP_FTEEXEC: opchar = 'x'; break;
2971 }
6f1401dc 2972 tryAMAGICftest_MG(opchar);
7fb13887 2973
af9e49b4
NC		 2974 switch (PL_op->op_type) {
2975 case OP_FTRREAD:
2976#if !(defined(HAS_ACCESS) && defined(R_OK))
2977 use_access = 0;
2978#endif
2979 break;
2980
2981 case OP_FTRWRITE:
5ff3f7a4 2982#if defined(HAS_ACCESS) && defined(W_OK)
af9e49b4 2983 access_mode = W_OK;
5ff3f7a4 2984#else
af9e49b4 2985 use_access = 0;
5ff3f7a4 2986#endif
af9e49b4
NC		 2987 stat_mode = S_IWUSR;
2988 break;
a0d0e21e 2989
af9e49b4 2990 case OP_FTREXEC:
5ff3f7a4 2991#if defined(HAS_ACCESS) && defined(X_OK)
af9e49b4 2992 access_mode = X_OK;
5ff3f7a4 2993#else
af9e49b4 2994 use_access = 0;
5ff3f7a4 2995#endif
af9e49b4
NC		 2996 stat_mode = S_IXUSR;
2997 break;
a0d0e21e 2998
af9e49b4 2999 case OP_FTEWRITE:
faee0e31 3000#ifdef PERL_EFF_ACCESS
af9e49b4 3001 access_mode = W_OK;
5ff3f7a4 3002#endif
af9e49b4 3003 stat_mode = S_IWUSR;
7fb13887 3004 /* fall through */
a0d0e21e 3005
af9e49b4
NC		 3006 case OP_FTEREAD:
3007#ifndef PERL_EFF_ACCESS
3008 use_access = 0;
3009#endif
3010 effective = TRUE;
3011 break;
3012
af9e49b4 3013 case OP_FTEEXEC:
faee0e31 3014#ifdef PERL_EFF_ACCESS
b376053d 3015 access_mode = X_OK;
5ff3f7a4 3016#else
af9e49b4 3017 use_access = 0;
5ff3f7a4 3018#endif
af9e49b4
NC		 3019 stat_mode = S_IXUSR;
3020 effective = TRUE;
3021 break;
3022 }
a0d0e21e 3023
af9e49b4
NC		 3024 if (use_access) {
3025#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
d2f67720 3026 const char *name = SvPV_nolen(*PL_stack_sp);
af9e49b4
NC		 3027 if (effective) {
3028# ifdef PERL_EFF_ACCESS
3029 result = PERL_EFF_ACCESS(name, access_mode);
3030# else
3031 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
3032 OP_NAME(PL_op));
3033# endif
3034 }
3035 else {
3036# ifdef HAS_ACCESS
3037 result = access(name, access_mode);
3038# else
3039 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
3040# endif
3041 }
5ff3f7a4 3042 if (result == 0)
d2c4d2d1 3043 FT_RETURNYES;
5ff3f7a4 3044 if (result < 0)
d2c4d2d1
FC		 3045 FT_RETURNUNDEF;
3046 FT_RETURNNO;
af9e49b4 3047#endif
22865c03 3048 }
af9e49b4 3049
40c852de 3050 result = my_stat_flags(0);
a0d0e21e 3051 if (result < 0)
8db8f6b6 3052 FT_RETURNUNDEF;
af9e49b4 3053 if (cando(stat_mode, effective, &PL_statcache))
8db8f6b6
FC		 3054 FT_RETURNYES;
3055 FT_RETURNNO;
a0d0e21e
LW		 3056}
3057
3058PP(pp_ftis)
3059{
97aff369 3060 dVAR;
fbb0b3b3 3061 I32 result;
d7f0a2f4 3062 const int op_type = PL_op->op_type;
07fe7c6a 3063 char opchar = '?';
07fe7c6a
BM		 3064
3065 switch (op_type) {
3066 case OP_FTIS: opchar = 'e'; break;
3067 case OP_FTSIZE: opchar = 's'; break;
3068 case OP_FTMTIME: opchar = 'M'; break;
3069 case OP_FTCTIME: opchar = 'C'; break;
3070 case OP_FTATIME: opchar = 'A'; break;
3071 }
6f1401dc 3072 tryAMAGICftest_MG(opchar);
07fe7c6a 3073
40c852de 3074 result = my_stat_flags(0);
a0d0e21e 3075 if (result < 0)
8db8f6b6 3076 FT_RETURNUNDEF;
d7f0a2f4 3077 if (op_type == OP_FTIS)
8db8f6b6 3078 FT_RETURNYES;
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
8db8f6b6 3086 sv_setnv(TARG, (NV)PL_statcache.st_size);
957b0e1d 3087#else
8db8f6b6 3088 sv_setiv(TARG, (IV)PL_statcache.st_size);
957b0e1d
NC		 3089#endif
3090 break;
3091 case OP_FTMTIME:
8db8f6b6
FC		 3092 sv_setnv(TARG,
3093 ((NV)PL_basetime - PL_statcache.st_mtime) / 86400.0 );
957b0e1d
NC		 3094 break;
3095 case OP_FTATIME:
8db8f6b6
FC		 3096 sv_setnv(TARG,
3097 ((NV)PL_basetime - PL_statcache.st_atime) / 86400.0 );
957b0e1d
NC		 3098 break;
3099 case OP_FTCTIME:
8db8f6b6
FC		 3100 sv_setnv(TARG,
3101 ((NV)PL_basetime - PL_statcache.st_ctime) / 86400.0 );
957b0e1d
NC		 3102 break;
3103 }
8db8f6b6 3104 SvSETMAGIC(TARG);
48d023d6
NC		 3105 return SvTRUE_nomg(TARG)
3106 ? S_ft_return_true(aTHX_ TARG) : S_ft_return_false(aTHX_ TARG);
957b0e1d 3107 }
a0d0e21e
LW		 3108}
3109
a0d0e21e
LW		 3110PP(pp_ftrowned)
3111{
97aff369 3112 dVAR;
fbb0b3b3 3113 I32 result;
07fe7c6a 3114 char opchar = '?';
17ad201a 3115
7fb13887
BM		 3116 switch (PL_op->op_type) {
3117 case OP_FTROWNED: opchar = 'O'; break;
3118 case OP_FTEOWNED: opchar = 'o'; break;
3119 case OP_FTZERO: opchar = 'z'; break;
3120 case OP_FTSOCK: opchar = 'S'; break;
3121 case OP_FTCHR: opchar = 'c'; break;
3122 case OP_FTBLK: opchar = 'b'; break;
3123 case OP_FTFILE: opchar = 'f'; break;
3124 case OP_FTDIR: opchar = 'd'; break;
3125 case OP_FTPIPE: opchar = 'p'; break;
3126 case OP_FTSUID: opchar = 'u'; break;
3127 case OP_FTSGID: opchar = 'g'; break;
3128 case OP_FTSVTX: opchar = 'k'; break;
3129 }
6f1401dc 3130 tryAMAGICftest_MG(opchar);
7fb13887 3131
17ad201a
NC		 3132 /* I believe that all these three are likely to be defined on most every
3133 system these days. */
3134#ifndef S_ISUID
c410dd6a 3135 if(PL_op->op_type == OP_FTSUID) {
8db8f6b6 3136 FT_RETURNNO;
c410dd6a 3137 }
17ad201a
NC		 3138#endif
3139#ifndef S_ISGID
c410dd6a 3140 if(PL_op->op_type == OP_FTSGID) {
8db8f6b6 3141 FT_RETURNNO;
c410dd6a 3142 }
17ad201a
NC		 3143#endif
3144#ifndef S_ISVTX
c410dd6a 3145 if(PL_op->op_type == OP_FTSVTX) {
8db8f6b6 3146 FT_RETURNNO;
c410dd6a 3147 }
17ad201a
NC		 3148#endif
3149
40c852de 3150 result = my_stat_flags(0);
a0d0e21e 3151 if (result < 0)
8db8f6b6 3152 FT_RETURNUNDEF;
f1cb2d48
NC		 3153 switch (PL_op->op_type) {
3154 case OP_FTROWNED:
985213f2 3155 if (PL_statcache.st_uid == PerlProc_getuid())
8db8f6b6 3156 FT_RETURNYES;
f1cb2d48
NC		 3157 break;
3158 case OP_FTEOWNED:
985213f2 3159 if (PL_statcache.st_uid == PerlProc_geteuid())
8db8f6b6 3160 FT_RETURNYES;
f1cb2d48
NC		 3161 break;
3162 case OP_FTZERO:
3163 if (PL_statcache.st_size == 0)
8db8f6b6 3164 FT_RETURNYES;
f1cb2d48
NC		 3165 break;
3166 case OP_FTSOCK:
3167 if (S_ISSOCK(PL_statcache.st_mode))
8db8f6b6 3168 FT_RETURNYES;
f1cb2d48
NC		 3169 break;
3170 case OP_FTCHR:
3171 if (S_ISCHR(PL_statcache.st_mode))
8db8f6b6 3172 FT_RETURNYES;
f1cb2d48
NC		 3173 break;
3174 case OP_FTBLK:
3175 if (S_ISBLK(PL_statcache.st_mode))
8db8f6b6 3176 FT_RETURNYES;
f1cb2d48
NC		 3177 break;
3178 case OP_FTFILE:
3179 if (S_ISREG(PL_statcache.st_mode))
8db8f6b6 3180 FT_RETURNYES;
f1cb2d48
NC		 3181 break;
3182 case OP_FTDIR:
3183 if (S_ISDIR(PL_statcache.st_mode))
8db8f6b6 3184 FT_RETURNYES;
f1cb2d48
NC		 3185 break;
3186 case OP_FTPIPE:
3187 if (S_ISFIFO(PL_statcache.st_mode))
8db8f6b6 3188 FT_RETURNYES;
f1cb2d48 3189 break;
a0d0e21e 3190#ifdef S_ISUID
17ad201a
NC		 3191 case OP_FTSUID:
3192 if (PL_statcache.st_mode & S_ISUID)
8db8f6b6 3193 FT_RETURNYES;
17ad201a 3194 break;
a0d0e21e 3195#endif
a0d0e21e 3196#ifdef S_ISGID
17ad201a
NC		 3197 case OP_FTSGID:
3198 if (PL_statcache.st_mode & S_ISGID)
8db8f6b6 3199 FT_RETURNYES;
17ad201a
NC		 3200 break;
3201#endif
3202#ifdef S_ISVTX
3203 case OP_FTSVTX:
3204 if (PL_statcache.st_mode & S_ISVTX)
8db8f6b6 3205 FT_RETURNYES;
17ad201a 3206 break;
a0d0e21e 3207#endif
17ad201a 3208 }
8db8f6b6 3209 FT_RETURNNO;
a0d0e21e
LW		 3210}
3211
17ad201a 3212PP(pp_ftlink)
a0d0e21e 3213{
97aff369 3214 dVAR;
500ff13f 3215 I32 result;
07fe7c6a 3216
6f1401dc 3217 tryAMAGICftest_MG('l');
40c852de 3218 result = my_lstat_flags(0);
500ff13f 3219
a0d0e21e 3220 if (result < 0)
8db8f6b6 3221 FT_RETURNUNDEF;
17ad201a 3222 if (S_ISLNK(PL_statcache.st_mode))
8db8f6b6
FC		 3223 FT_RETURNYES;
3224 FT_RETURNNO;
a0d0e21e
LW		 3225}
3226
3227PP(pp_fttty)
3228{
97aff369 3229 dVAR;
a0d0e21e
LW		 3230 int fd;
3231 GV *gv;
0784aae0 3232 char *name = NULL;
40c852de 3233 STRLEN namelen;
fb73857a 3234
6f1401dc 3235 tryAMAGICftest_MG('t');
07fe7c6a 3236
533c011a 3237 if (PL_op->op_flags & OPf_REF)
146174a9 3238 gv = cGVOP_gv;
e5e154d2 3239 else {
d2f67720 3240 SV *tmpsv = *PL_stack_sp;
e5e154d2 3241 if (!(gv = MAYBE_DEREF_GV_nomg(tmpsv))) {
40c852de
DM		 3242 name = SvPV_nomg(tmpsv, namelen);
3243 gv = gv_fetchpvn_flags(name, namelen, SvUTF8(tmpsv), SVt_PVIO);
e5e154d2 3244 }
40c852de 3245 }
fb73857a 3246
a0d0e21e 3247 if (GvIO(gv) && IoIFP(GvIOp(gv)))
760ac839 3248 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
b6cb94c5 3249 else if (name && isDIGIT(*name))
40c852de 3250 fd = atoi(name);
a0d0e21e 3251 else
8db8f6b6 3252 FT_RETURNUNDEF;
6ad3d225 3253 if (PerlLIO_isatty(fd))
8db8f6b6
FC		 3254 FT_RETURNYES;
3255 FT_RETURNNO;
a0d0e21e
LW		 3256}
3257
a0d0e21e
LW		 3258PP(pp_fttext)
3259{
97aff369 3260 dVAR;
a0d0e21e 3261 I32 i;
b66f3475 3262 SSize_t len;
a0d0e21e
LW		 3263 I32 odd = 0;
3264 STDCHAR tbuf[512];
eb578fdb
KW		 3265 STDCHAR *s;
3266 IO *io;
3267 SV *sv = NULL;
5f05dabc 3268 GV *gv;
146174a9 3269 PerlIO *fp;
a0d0e21e 3270
6f1401dc 3271 tryAMAGICftest_MG(PL_op->op_type == OP_FTTEXT ? 'T' : 'B');
07fe7c6a 3272
533c011a 3273 if (PL_op->op_flags & OPf_REF)
146174a9 3274 gv = cGVOP_gv;
d2c4d2d1 3275 else if ((PL_op->op_private & (OPpFT_STACKED|OPpFT_AFTER_t))
8db8f6b6 3276 == OPpFT_STACKED)
ba8182f8 3277 gv = PL_defgv;
d2c4d2d1 3278 else {
d2f67720 3279 sv = *PL_stack_sp;
d2c4d2d1 3280 gv = MAYBE_DEREF_GV_nomg(sv);
8db8f6b6 3281 }
5f05dabc 3282
3283 if (gv) {
3280af22
NIS		 3284 if (gv == PL_defgv) {
3285 if (PL_statgv)
bd5f6c01
FC		 3286 io = SvTYPE(PL_statgv) == SVt_PVIO
3287 ? (IO *)PL_statgv
3288 : GvIO(PL_statgv);
a0d0e21e 3289 else {
a0d0e21e
LW		 3290 goto really_filename;
3291 }
3292 }
3293 else {
3280af22 3294 PL_statgv = gv;
76f68e9b 3295 sv_setpvs(PL_statname, "");
3280af22 3296 io = GvIO(PL_statgv);
a0d0e21e 3297 }
eb4c377a 3298 PL_laststatval = -1;
21a64c3e 3299 PL_laststype = OP_STAT;
a0d0e21e 3300 if (io && IoIFP(io)) {
5f05dabc 3301 if (! PerlIO_has_base(IoIFP(io)))
cea2e8a9 3302 DIE(aTHX_ "-T and -B not implemented on filehandles");
3280af22
NIS		 3303 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3304 if (PL_laststatval < 0)
8db8f6b6 3305 FT_RETURNUNDEF;
9cbac4c7 3306 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
533c011a 3307 if (PL_op->op_type == OP_FTTEXT)
8db8f6b6 3308 FT_RETURNNO;
a0d0e21e 3309 else
8db8f6b6 3310 FT_RETURNYES;
9cbac4c7 3311 }
a20bf0c3 3312 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
760ac839 3313 i = PerlIO_getc(IoIFP(io));
a0d0e21e 3314 if (i != EOF)
760ac839 3315 (void)PerlIO_ungetc(IoIFP(io),i);
a0d0e21e 3316 }
a20bf0c3 3317 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
8db8f6b6 3318 FT_RETURNYES;
a20bf0c3
JH		 3319 len = PerlIO_get_bufsiz(IoIFP(io));
3320 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
760ac839
LW		 3321 /* sfio can have large buffers - limit to 512 */
3322 if (len > 512)
3323 len = 512;
a0d0e21e
LW		 3324 }
3325 else {
2ad48547 3326 SETERRNO(EBADF,RMS_IFI);
3f12cff4 3327 report_evil_fh(gv);
93189314 3328 SETERRNO(EBADF,RMS_IFI);
8db8f6b6 3329 FT_RETURNUNDEF;
a0d0e21e
LW		 3330 }
3331 }
3332 else {
81e9306f 3333 sv_setpv(PL_statname, SvPV_nomg_const_nolen(sv));
5f05dabc 3334 really_filename:
a0714e2c 3335 PL_statgv = NULL;
aa07b2f6 3336 if (!(fp = PerlIO_open(SvPVX_const(PL_statname), "r"))) {
ad2d99e3
FC		 3337 if (!gv) {
3338 PL_laststatval = -1;
3339 PL_laststype = OP_STAT;
3340 }
349d4f2f
NC		 3341 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname),
3342 '\n'))
5d37acd6
DM		 3343 {
3344 /* PL_warn_nl is constant */
3345 GCC_DIAG_IGNORE(-Wformat-nonliteral);
9014280d 3346 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
5d37acd6
DM		 3347 GCC_DIAG_RESTORE;
3348 }
8db8f6b6 3349 FT_RETURNUNDEF;
a0d0e21e 3350 }
ad2d99e3 3351 PL_laststype = OP_STAT;
146174a9
CB		 3352 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(fp), &PL_statcache);
3353 if (PL_laststatval < 0) {
3354 (void)PerlIO_close(fp);
8db8f6b6 3355 FT_RETURNUNDEF;
146174a9