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[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
PP
52#ifdef I_SYS_RESOURCE
53# include <sys/resource.h>
16d20bd9 54#endif
a0d0e21e 55
2986a63f
JH
56#ifdef NETWARE
57NETDB_DEFINE_CONTEXT
58#endif
59
a0d0e21e 60#ifdef HAS_SELECT
1e743fda
JH
61# ifdef I_SYS_SELECT
62# include <sys/select.h>
63# endif
a0d0e21e 64#endif
a0d0e21e 65
dc45a647
MB
66/* XXX Configure test needed.
67 h_errno might not be a simple 'int', especially for multi-threaded
5ff3f7a4
GS
68 applications, see "extern int errno in perl.h". Creating such
69 a test requires taking into account the differences between
70 compiling multithreaded and singlethreaded ($ccflags et al).
71 HOST_NOT_FOUND is typically defined in <netdb.h>.
dc45a647 72*/
cb50131a 73#if defined(HOST_NOT_FOUND) && !defined(h_errno) && !defined(__CYGWIN__)
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
PP
111# include <sys/utime.h>
112# else
113# include <utime.h>
114# endif
a0d0e21e 115#endif
a0d0e21e 116
cbdc8872 117#ifdef HAS_CHSIZE
cd52b7b2
PP
118# ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
119# undef my_chsize
120# endif
72cc7e2a 121# define my_chsize PerlLIO_chsize
27da23d5
JH
122#else
123# ifdef HAS_TRUNCATE
124# define my_chsize PerlLIO_chsize
125# else
126I32 my_chsize(int fd, Off_t length);
127# endif
cbdc8872
PP
128#endif
129
ff68c719
PP
130#ifdef HAS_FLOCK
131# define FLOCK flock
132#else /* no flock() */
133
36477c24
PP
134 /* fcntl.h might not have been included, even if it exists, because
135 the current Configure only sets I_FCNTL if it's needed to pick up
136 the *_OK constants. Make sure it has been included before testing
137 the fcntl() locking constants. */
138# if defined(HAS_FCNTL) && !defined(I_FCNTL)
139# include <fcntl.h>
140# endif
141
9d9004a9 142# if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
ff68c719
PP
143# define FLOCK fcntl_emulate_flock
144# define FCNTL_EMULATE_FLOCK
145# else /* no flock() or fcntl(F_SETLK,...) */
146# ifdef HAS_LOCKF
147# define FLOCK lockf_emulate_flock
148# define LOCKF_EMULATE_FLOCK
149# endif /* lockf */
150# endif /* no flock() or fcntl(F_SETLK,...) */
151
152# ifdef FLOCK
20ce7b12 153 static int FLOCK (int, int);
ff68c719
PP
154
155 /*
156 * These are the flock() constants. Since this sytems doesn't have
157 * flock(), the values of the constants are probably not available.
158 */
159# ifndef LOCK_SH
160# define LOCK_SH 1
161# endif
162# ifndef LOCK_EX
163# define LOCK_EX 2
164# endif
165# ifndef LOCK_NB
166# define LOCK_NB 4
167# endif
168# ifndef LOCK_UN
169# define LOCK_UN 8
170# endif
171# endif /* emulating flock() */
172
173#endif /* no flock() */
55497cff 174
85ab1d1d 175#define ZBTLEN 10
27da23d5 176static const char zero_but_true[ZBTLEN + 1] = "0 but true";
85ab1d1d 177
5ff3f7a4
GS
178#if defined(I_SYS_ACCESS) && !defined(R_OK)
179# include <sys/access.h>
180#endif
181
c529f79d
CB
182#if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
183# define FD_CLOEXEC 1 /* NeXT needs this */
184#endif
185
a4af207c
JH
186#include "reentr.h"
187
9cffb111
OS
188#ifdef __Lynx__
189/* Missing protos on LynxOS */
190void sethostent(int);
191void endhostent(void);
192void setnetent(int);
193void endnetent(void);
194void setprotoent(int);
195void endprotoent(void);
196void setservent(int);
197void endservent(void);
198#endif
199
faee0e31 200#undef PERL_EFF_ACCESS /* EFFective uid/gid ACCESS */
5ff3f7a4
GS
201
202/* F_OK unused: if stat() cannot find it... */
203
d7558cad 204#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
c955f117 205 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
d7558cad 206# define PERL_EFF_ACCESS(p,f) (access((p), (f) | EFF_ONLY_OK))
5ff3f7a4
GS
207#endif
208
d7558cad 209#if !defined(PERL_EFF_ACCESS) && defined(HAS_EACCESS)
3813c136 210# ifdef I_SYS_SECURITY
5ff3f7a4
GS
211# include <sys/security.h>
212# endif
c955f117
JH
213# ifdef ACC_SELF
214 /* HP SecureWare */
d7558cad 215# define PERL_EFF_ACCESS(p,f) (eaccess((p), (f), ACC_SELF))
c955f117
JH
216# else
217 /* SCO */
d7558cad 218# define PERL_EFF_ACCESS(p,f) (eaccess((p), (f)))
c955f117 219# endif
5ff3f7a4
GS
220#endif
221
d7558cad 222#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESSX) && defined(ACC_SELF)
c955f117 223 /* AIX */
d7558cad 224# define PERL_EFF_ACCESS(p,f) (accessx((p), (f), ACC_SELF))
5ff3f7a4
GS
225#endif
226
d7558cad
NC
227
228#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) \
327c3667
GS
229 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
230 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
5ff3f7a4 231/* The Hard Way. */
327c3667 232STATIC int
7f4774ae 233S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
ba106d47 234{
c4420975
AL
235 const Uid_t ruid = getuid();
236 const Uid_t euid = geteuid();
237 const Gid_t rgid = getgid();
238 const Gid_t egid = getegid();
5ff3f7a4
GS
239 int res;
240
5ff3f7a4 241#if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
cea2e8a9 242 Perl_croak(aTHX_ "switching effective uid is not implemented");
5ff3f7a4
GS
243#else
244#ifdef HAS_SETREUID
245 if (setreuid(euid, ruid))
246#else
247#ifdef HAS_SETRESUID
248 if (setresuid(euid, ruid, (Uid_t)-1))
249#endif
250#endif
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
PP
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
PP
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
PP
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 688 rstio = GvIOn(rgv);
a0d0e21e
LW
689 if (IoIFP(rstio))
690 do_close(rgv, FALSE);
49225470
DD
691
692 wstio = GvIOn(wgv);
a0d0e21e
LW
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
PP
995 }
996 }
38193a09 997 sv_unmagic(sv, how) ;
55497cff 998 RETPUSHYES;
a0d0e21e
LW
999}
1000
c07a80fd
PP
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
PP
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
PP
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
72d33970 1249typeglob. As PL_defoutgv "owns" a reference on its typeglob, the reference
8226a3d7
NC
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 }
88c34251 1338 else SvUTF8_off(TARG);
a0d0e21e
LW
1339 PUSHTARG;
1340 RETURN;
1341}
1342
76e3520e 1343STATIC OP *
cea2e8a9 1344S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
a0d0e21e 1345{
27da23d5 1346 dVAR;
eb578fdb 1347 PERL_CONTEXT *cx;
f54cb97a 1348 const I32 gimme = GIMME_V;
a0d0e21e 1349
7918f24d
NC
1350 PERL_ARGS_ASSERT_DOFORM;
1351
535e48ea 1352 if (CvCLONE(cv))
7b190374
NC
1353 cv = MUTABLE_CV(sv_2mortal(MUTABLE_SV(cv_clone(cv))));
1354
a0d0e21e
LW
1355 ENTER;
1356 SAVETMPS;
1357
146174a9 1358 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
10067d9a 1359 PUSHFORMAT(cx, retop);
f32c7e86
FC
1360 if (CvDEPTH(cv) >= 2) {
1361 PERL_STACK_OVERFLOW_CHECK();
1362 pad_push(CvPADLIST(cv), CvDEPTH(cv));
1363 }
fd617465 1364 SAVECOMPPAD();
f32c7e86 1365 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), CvDEPTH(cv));
a0d0e21e 1366
4633a7c4 1367 setdefout(gv); /* locally select filehandle so $% et al work */
a0d0e21e
LW
1368 return CvSTART(cv);
1369}
1370
1371PP(pp_enterwrite)
1372{
97aff369 1373 dVAR;
39644a26 1374 dSP;
eb578fdb
KW
1375 GV *gv;
1376 IO *io;
a0d0e21e 1377 GV *fgv;
07822e36
JH
1378 CV *cv = NULL;
1379 SV *tmpsv = NULL;
a0d0e21e 1380
2addaaf3 1381 if (MAXARG == 0) {
2addaaf3 1382 EXTEND(SP, 1);
49225470 1383 gv = PL_defoutgv;
2addaaf3 1384 }
a0d0e21e 1385 else {
159b6efe 1386 gv = MUTABLE_GV(POPs);
a0d0e21e 1387 if (!gv)
3280af22 1388 gv = PL_defoutgv;
a0d0e21e 1389 }
a0d0e21e
LW
1390 io = GvIO(gv);
1391 if (!io) {
1392 RETPUSHNO;
1393 }
1394 if (IoFMT_GV(io))
1395 fgv = IoFMT_GV(io);
1396 else
1397 fgv = gv;
1398
2d1ebc9b 1399 assert(fgv);
a79db61d 1400
a0d0e21e 1401 cv = GvFORM(fgv);
a0d0e21e 1402 if (!cv) {
10edeb5d 1403 tmpsv = sv_newmortal();
f4a7049d 1404 gv_efullname4(tmpsv, fgv, NULL, FALSE);
2d1ebc9b 1405 DIE(aTHX_ "Undefined format \"%"SVf"\" called", SVfARG(tmpsv));
a0d0e21e 1406 }
44a8e56a 1407 IoFLAGS(io) &= ~IOf_DIDTOP;
8e4ecf23 1408 RETURNOP(doform(cv,gv,PL_op->op_next));
a0d0e21e
LW
1409}
1410
1411PP(pp_leavewrite)
1412{
27da23d5 1413 dVAR; dSP;
f9c764c5 1414 GV * const gv = cxstack[cxstack_ix].blk_format.gv;
eb578fdb 1415 IO * const io = GvIOp(gv);
8b8cacda 1416 PerlIO *ofp;
760ac839 1417 PerlIO *fp;
8772537c
AL
1418 SV **newsp;
1419 I32 gimme;
eb578fdb 1420 PERL_CONTEXT *cx;
8f89e5a9 1421 OP *retop;
a0d0e21e 1422
8b8cacda 1423 if (!io || !(ofp = IoOFP(io)))
1424 goto forget_top;
1425
760ac839 1426 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1427 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
8b8cacda 1428
3280af22
NIS
1429 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1430 PL_formtarget != PL_toptarget)
a0d0e21e 1431 {
4633a7c4
LW
1432 GV *fgv;
1433 CV *cv;
a0d0e21e
LW
1434 if (!IoTOP_GV(io)) {
1435 GV *topgv;
a0d0e21e
LW
1436
1437 if (!IoTOP_NAME(io)) {
1b6737cc 1438 SV *topname;
a0d0e21e
LW
1439 if (!IoFMT_NAME(io))
1440 IoFMT_NAME(io) = savepv(GvNAME(gv));
d0c0e7dd
FC
1441 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%"HEKf"_TOP",
1442 HEKfARG(GvNAME_HEK(gv))));
f776e3cd 1443 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
748a9306 1444 if ((topgv && GvFORM(topgv)) ||
fafc274c 1445 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
2e0de35c 1446 IoTOP_NAME(io) = savesvpv(topname);
a0d0e21e 1447 else
89529cee 1448 IoTOP_NAME(io) = savepvs("top");
a0d0e21e 1449 }
f776e3cd 1450 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
a0d0e21e 1451 if (!topgv || !GvFORM(topgv)) {
b929a54b 1452 IoLINES_LEFT(io) = IoPAGE_LEN(io);
a0d0e21e
LW
1453 goto forget_top;
1454 }
1455 IoTOP_GV(io) = topgv;
1456 }
748a9306
LW
1457 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1458 I32 lines = IoLINES_LEFT(io);
504618e9 1459 const char *s = SvPVX_const(PL_formtarget);
8e07c86e
AD
1460 if (lines <= 0) /* Yow, header didn't even fit!!! */
1461 goto forget_top;
748a9306
LW
1462 while (lines-- > 0) {
1463 s = strchr(s, '\n');
1464 if (!s)
1465 break;
1466 s++;
1467 }
1468 if (s) {
f54cb97a 1469 const STRLEN save = SvCUR(PL_formtarget);
aa07b2f6 1470 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
d75029d0
NIS
1471 do_print(PL_formtarget, ofp);
1472 SvCUR_set(PL_formtarget, save);
3280af22
NIS
1473 sv_chop(PL_formtarget, s);
1474 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW
1475 }
1476 }
a0d0e21e 1477 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
f6dfc736 1478 do_print(GvSV(gv_fetchpvs("\f", GV_ADD, SVt_PV)), ofp);
a0d0e21e
LW
1479 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1480 IoPAGE(io)++;
3280af22 1481 PL_formtarget = PL_toptarget;
748a9306 1482 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4 1483 fgv = IoTOP_GV(io);
636013b3 1484 assert(fgv); /* IoTOP_GV(io) should have been set above */
4633a7c4 1485 cv = GvFORM(fgv);
1df70142
AL
1486 if (!cv) {
1487 SV * const sv = sv_newmortal();
bd61b366 1488 gv_efullname4(sv, fgv, NULL, FALSE);
44b7e78a 1489 DIE(aTHX_ "Undefined top format \"%"SVf"\" called", SVfARG(sv));
4633a7c4 1490 }
43cd5cb7 1491 return doform(cv, gv, PL_op);
a0d0e21e
LW
1492 }
1493
1494 forget_top:
3280af22 1495 POPBLOCK(cx,PL_curpm);
8f89e5a9 1496 retop = cx->blk_sub.retop;
25375124 1497 POPFORMAT(cx);
43cd5cb7 1498 SP = newsp; /* ignore retval of formline */
a0d0e21e
LW
1499 LEAVE;
1500
c782dc1d
FC
1501 if (!io || !(fp = IoOFP(io))) {
1502 if (io && IoIFP(io))
7716c5c5 1503 report_wrongway_fh(gv, '<');
c521cf7c 1504 else
7716c5c5 1505 report_evil_fh(gv);
3280af22 1506 PUSHs(&PL_sv_no);
a0d0e21e
LW
1507 }
1508 else {
3280af22 1509 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
a2a5de95 1510 Perl_ck_warner(aTHX_ packWARN(WARN_IO), "page overflow");
a0d0e21e 1511 }
d75029d0 1512 if (!do_print(PL_formtarget, fp))
3280af22 1513 PUSHs(&PL_sv_no);
a0d0e21e 1514 else {
3280af22
NIS
1515 FmLINES(PL_formtarget) = 0;
1516 SvCUR_set(PL_formtarget, 0);
1517 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1518 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1519 (void)PerlIO_flush(fp);
3280af22 1520 PUSHs(&PL_sv_yes);
a0d0e21e
LW
1521 }
1522 }
3280af22 1523 PL_formtarget = PL_bodytarget;
29033a8a 1524 PERL_UNUSED_VAR(gimme);
8e4ecf23 1525 RETURNOP(retop);
a0d0e21e
LW
1526}
1527
1528PP(pp_prtf)
1529{
27da23d5 1530 dVAR; dSP; dMARK; dORIGMARK;
760ac839 1531 PerlIO *fp;
a0d0e21e 1532
159b6efe
NC
1533 GV * const gv
1534 = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv;
9c9f25b8 1535 IO *const io = GvIO(gv);
46fc3d4c 1536
87385d72
FC
1537 /* Treat empty list as "" */
1538 if (MARK == SP) XPUSHs(&PL_sv_no);
1539
9c9f25b8 1540 if (io) {
a5e1d062 1541 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d
AL
1542 if (mg) {
1543 if (MARK == ORIGMARK) {
1544 MEXTEND(SP, 1);
1545 ++MARK;
1546 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1547 ++SP;
1548 }
3e0cb5de 1549 return Perl_tied_method(aTHX_ SV_CONST(PRINTF), mark - 1, MUTABLE_SV(io),
d682515d
NC
1550 mg,
1551 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1552 sp - mark);
a79db61d 1553 }
46fc3d4c
PP
1554 }
1555
9c9f25b8 1556 if (!io) {
51087808 1557 report_evil_fh(gv);
93189314 1558 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW
1559 goto just_say_no;
1560 }
1561 else if (!(fp = IoOFP(io))) {
7716c5c5
NC
1562 if (IoIFP(io))
1563 report_wrongway_fh(gv, '<');
1564 else if (ckWARN(WARN_CLOSED))
1565 report_evil_fh(gv);
93189314 1566 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
a0d0e21e
LW
1567 goto just_say_no;
1568 }
1569 else {
c7bd8b84 1570 SV *sv = sv_newmortal();
a0d0e21e
LW
1571 do_sprintf(sv, SP - MARK, MARK + 1);
1572 if (!do_print(sv, fp))
1573 goto just_say_no;
1574
1575 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1576 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW
1577 goto just_say_no;
1578 }
a0d0e21e 1579 SP = ORIGMARK;
3280af22 1580 PUSHs(&PL_sv_yes);
a0d0e21e
LW
1581 RETURN;
1582
1583 just_say_no:
a0d0e21e 1584 SP = ORIGMARK;
3280af22 1585 PUSHs(&PL_sv_undef);
a0d0e21e
LW
1586 RETURN;
1587}
1588
c07a80fd
PP
1589PP(pp_sysopen)
1590{
97aff369 1591 dVAR;
39644a26 1592 dSP;
de5e49e1 1593 const int perm = (MAXARG > 3 && (TOPs || POPs)) ? POPi : 0666;
1df70142 1594 const int mode = POPi;
1b6737cc 1595 SV * const sv = POPs;
159b6efe 1596 GV * const gv = MUTABLE_GV(POPs);
1b6737cc 1597 STRLEN len;
c07a80fd 1598
4592e6ca 1599 /* Need TIEHANDLE method ? */
1b6737cc 1600 const char * const tmps = SvPV_const(sv, len);
e62f0680 1601 /* FIXME? do_open should do const */
4608196e 1602 if (do_open(gv, tmps, len, TRUE, mode, perm, NULL)) {
c07a80fd 1603 IoLINES(GvIOp(gv)) = 0;
3280af22 1604 PUSHs(&PL_sv_yes);
c07a80fd
PP
1605 }
1606 else {
3280af22 1607 PUSHs(&PL_sv_undef);
c07a80fd
PP
1608 }
1609 RETURN;
1610}
1611
a0d0e21e
LW
1612PP(pp_sysread)
1613{
27da23d5 1614 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
0b423688 1615 SSize_t offset;
a0d0e21e
LW
1616 IO *io;
1617 char *buffer;
0b423688 1618 STRLEN orig_size;
5b54f415 1619 SSize_t length;
eb5c063a 1620 SSize_t count;
748a9306 1621 SV *bufsv;
a0d0e21e 1622 STRLEN blen;
eb5c063a 1623 int fp_utf8;
1dd30107
NC
1624 int buffer_utf8;
1625 SV *read_target;
eb5c063a
NIS
1626 Size_t got = 0;
1627 Size_t wanted;
1d636c13 1628 bool charstart = FALSE;
87330c3c
JH
1629 STRLEN charskip = 0;
1630 STRLEN skip = 0;
a0d0e21e 1631
159b6efe 1632 GV * const gv = MUTABLE_GV(*++MARK);
5b468f54 1633 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1b6737cc 1634 && gv && (io = GvIO(gv)) )
137443ea 1635 {
a5e1d062 1636 const MAGIC *const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1b6737cc 1637 if (mg) {
3e0cb5de 1638 return Perl_tied_method(aTHX_ SV_CONST(READ), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC
1639 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1640 sp - mark);
1b6737cc 1641 }
2ae324a7
PP
1642 }
1643
a0d0e21e
LW
1644 if (!gv)
1645 goto say_undef;
748a9306 1646 bufsv = *++MARK;
ff68c719 1647 if (! SvOK(bufsv))
76f68e9b 1648 sv_setpvs(bufsv, "");
a0d0e21e 1649 length = SvIVx(*++MARK);
4bac9ae4
CS
1650 if (length < 0)
1651 DIE(aTHX_ "Negative length");
748a9306 1652 SETERRNO(0,0);
a0d0e21e
LW
1653 if (MARK < SP)
1654 offset = SvIVx(*++MARK);
1655 else
1656 offset = 0;
1657 io = GvIO(gv);
b5fe5ca2 1658 if (!io || !IoIFP(io)) {
51087808 1659 report_evil_fh(gv);
b5fe5ca2 1660 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1661 goto say_undef;
b5fe5ca2 1662 }
0064a8a9 1663 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
7d59b7e4 1664 buffer = SvPVutf8_force(bufsv, blen);
1e54db1a 1665 /* UTF-8 may not have been set if they are all low bytes */
eb5c063a 1666 SvUTF8_on(bufsv);
9b9d7ce8 1667 buffer_utf8 = 0;
7d59b7e4
NIS
1668 }
1669 else {
1670 buffer = SvPV_force(bufsv, blen);
1dd30107 1671 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
7d59b7e4 1672 }
4bac9ae4 1673 if (DO_UTF8(bufsv)) {
3f914778 1674 blen = sv_len_utf8_nomg(bufsv);
4bac9ae4 1675 }
7d59b7e4 1676
d0965105
JH
1677 charstart = TRUE;
1678 charskip = 0;
87330c3c 1679 skip = 0;
4bac9ae4 1680 wanted = length;
d0965105 1681
a0d0e21e 1682#ifdef HAS_SOCKET
533c011a 1683 if (PL_op->op_type == OP_RECV) {
0b423688 1684 Sock_size_t bufsize;
46fc3d4c 1685 char namebuf[MAXPATHLEN];
b5afd346 1686#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
490ab354
JH
1687 bufsize = sizeof (struct sockaddr_in);
1688#else
46fc3d4c 1689 bufsize = sizeof namebuf;
490ab354 1690#endif
abf95952
IZ
1691#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1692 if (bufsize >= 256)
1693 bufsize = 255;
1694#endif
eb160463 1695 buffer = SvGROW(bufsv, (STRLEN)(length+1));
bbce6d69 1696 /* 'offset' means 'flags' here */
eb5c063a 1697 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
10edeb5d 1698 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1699 if (count < 0)
a0d0e21e 1700 RETPUSHUNDEF;
8eb023a9
DM
1701 /* MSG_TRUNC can give oversized count; quietly lose it */
1702 if (count > length)
1703 count = length;
eb5c063a 1704 SvCUR_set(bufsv, count);
748a9306
LW
1705 *SvEND(bufsv) = '\0';
1706 (void)SvPOK_only(bufsv);
eb5c063a
NIS
1707 if (fp_utf8)
1708 SvUTF8_on(bufsv);
748a9306 1709 SvSETMAGIC(bufsv);
aac0dd9a 1710 /* This should not be marked tainted if the fp is marked clean */
bbce6d69
PP
1711 if (!(IoFLAGS(io) & IOf_UNTAINT))
1712 SvTAINTED_on(bufsv);
a0d0e21e 1713 SP = ORIGMARK;
e122534c
TC
1714#if defined(__CYGWIN__)
1715 /* recvfrom() on cygwin doesn't set bufsize at all for
1716 connected sockets, leaving us with trash in the returned
1717 name, so use the same test as the Win32 code to check if it
1718 wasn't set, and set it [perl #118843] */
1719 if (bufsize == sizeof namebuf)
1720 bufsize = 0;
1721#endif
46fc3d4c 1722 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW
1723 PUSHs(TARG);
1724 RETURN;
1725 }
a0d0e21e 1726#endif
bbce6d69 1727 if (offset < 0) {
0b423688 1728 if (-offset > (SSize_t)blen)
cea2e8a9 1729 DIE(aTHX_ "Offset outside string");
bbce6d69
PP
1730 offset += blen;
1731 }
eb5c063a
NIS
1732 if (DO_UTF8(bufsv)) {
1733 /* convert offset-as-chars to offset-as-bytes */
d5f981bb 1734 if (offset >= (SSize_t)blen)
6960c29a
CH
1735 offset += SvCUR(bufsv) - blen;
1736 else
1737 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
eb5c063a
NIS
1738 }
1739 more_bytes:
0b423688 1740 orig_size = SvCUR(bufsv);
1dd30107
NC
1741 /* Allocating length + offset + 1 isn't perfect in the case of reading
1742 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1743 unduly.
1744 (should be 2 * length + offset + 1, or possibly something longer if
1745 PL_encoding is true) */
eb160463 1746 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
0b423688
TC
1747 if (offset > 0 && offset > (SSize_t)orig_size) { /* Zero any newly allocated space */
1748 Zero(buffer+orig_size, offset-orig_size, char);
cd52b7b2 1749 }
eb5c063a 1750 buffer = buffer + offset;
1dd30107
NC
1751 if (!buffer_utf8) {
1752 read_target = bufsv;
1753 } else {
1754 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1755 concatenate it to the current buffer. */
1756
1757 /* Truncate the existing buffer to the start of where we will be
1758 reading to: */
1759 SvCUR_set(bufsv, offset);
1760
1761 read_target = sv_newmortal();
862a34c6 1762 SvUPGRADE(read_target, SVt_PV);
fe2774ed 1763 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1dd30107 1764 }
eb5c063a 1765
533c011a 1766 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1767#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1768 if (IoTYPE(io) == IoTYPE_SOCKET) {
eb5c063a
NIS
1769 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1770 buffer, length, 0);
a7092146
GS
1771 }
1772 else
1773#endif
1774 {
eb5c063a
NIS
1775 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1776 buffer, length);
a7092146 1777 }
a0d0e21e
LW
1778 }
1779 else
3b02c43c 1780 {
eb5c063a
NIS
1781 count = PerlIO_read(IoIFP(io), buffer, length);
1782 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1783 if (count == 0 && PerlIO_error(IoIFP(io)))
1784 count = -1;
3b02c43c 1785 }
eb5c063a 1786 if (count < 0) {
7716c5c5 1787 if (IoTYPE(io) == IoTYPE_WRONLY)
a5390457 1788 report_wrongway_fh(gv, '>');
a0d0e21e 1789 goto say_undef;
af8c498a 1790 }
aa07b2f6 1791 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1dd30107
NC
1792 *SvEND(read_target) = '\0';
1793 (void)SvPOK_only(read_target);
0064a8a9 1794 if (fp_utf8 && !IN_BYTES) {
eb5c063a 1795 /* Look at utf8 we got back and count the characters */
1df70142 1796 const char *bend = buffer + count;
eb5c063a 1797 while (buffer < bend) {
d0965105
JH
1798 if (charstart) {
1799 skip = UTF8SKIP(buffer);
1800 charskip = 0;
1801 }
1802 if (buffer - charskip + skip > bend) {
eb5c063a
NIS
1803 /* partial character - try for rest of it */
1804 length = skip - (bend-buffer);
aa07b2f6 1805 offset = bend - SvPVX_const(bufsv);
d0965105
JH
1806 charstart = FALSE;
1807 charskip += count;
eb5c063a
NIS
1808 goto more_bytes;
1809 }
1810 else {
1811 got++;
1812 buffer += skip;
d0965105
JH
1813 charstart = TRUE;
1814 charskip = 0;
eb5c063a
NIS
1815 }
1816 }
1817 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1818 provided amount read (count) was what was requested (length)
1819 */
1820 if (got < wanted && count == length) {
d0965105 1821 length = wanted - got;
aa07b2f6 1822 offset = bend - SvPVX_const(bufsv);
eb5c063a
NIS
1823 goto more_bytes;
1824 }
1825 /* return value is character count */
1826 count = got;
1827 SvUTF8_on(bufsv);
1828 }
1dd30107
NC
1829 else if (buffer_utf8) {
1830 /* Let svcatsv upgrade the bytes we read in to utf8.
1831 The buffer is a mortal so will be freed soon. */
1832 sv_catsv_nomg(bufsv, read_target);
1833 }
748a9306 1834 SvSETMAGIC(bufsv);
aac0dd9a 1835 /* This should not be marked tainted if the fp is marked clean */
bbce6d69
PP
1836 if (!(IoFLAGS(io) & IOf_UNTAINT))
1837 SvTAINTED_on(bufsv);
a0d0e21e 1838 SP = ORIGMARK;
eb5c063a 1839 PUSHi(count);
a0d0e21e
LW
1840 RETURN;
1841
1842 say_undef:
1843 SP = ORIGMARK;
1844 RETPUSHUNDEF;
1845}
1846
60504e18 1847PP(pp_syswrite)
a0d0e21e 1848{
27da23d5 1849 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
748a9306 1850 SV *bufsv;
83003860 1851 const char *buffer;
8c99d73e 1852 SSize_t retval;
a0d0e21e 1853 STRLEN blen;
c9cb0f41 1854 STRLEN orig_blen_bytes;
64a1bc8e 1855 const int op_type = PL_op->op_type;
c9cb0f41
NC
1856 bool doing_utf8;
1857 U8 *tmpbuf = NULL;
159b6efe 1858 GV *const gv = MUTABLE_GV(*++MARK);
91472ad4
NC
1859 IO *const io = GvIO(gv);
1860
1861 if (op_type == OP_SYSWRITE && io) {
a5e1d062 1862 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1863 if (mg) {
a79db61d 1864 if (MARK == SP - 1) {
c8834ab7
TC
1865 SV *sv = *SP;
1866 mXPUSHi(sv_len(sv));
a79db61d
AL
1867 PUTBACK;
1868 }
1869
3e0cb5de 1870 return Perl_tied_method(aTHX_ SV_CONST(WRITE), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC
1871 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1872 sp - mark);
64a1bc8e 1873 }
1d603a67 1874 }
a0d0e21e
LW
1875 if (!gv)
1876 goto say_undef;
64a1bc8e 1877
748a9306 1878 bufsv = *++MARK;
64a1bc8e 1879
748a9306 1880 SETERRNO(0,0);
cf167416 1881 if (!io || !IoIFP(io) || IoTYPE(io) == IoTYPE_RDONLY) {
8c99d73e 1882 retval = -1;
51087808
NC
1883 if (io && IoIFP(io))
1884 report_wrongway_fh(gv, '<');
1885 else
1886 report_evil_fh(gv);
b5fe5ca2 1887 SETERRNO(EBADF,RMS_IFI);
7d59b7e4
NIS
1888 goto say_undef;
1889 }
1890
c9cb0f41
NC
1891 /* Do this first to trigger any overloading. */
1892 buffer = SvPV_const(bufsv, blen);
1893 orig_blen_bytes = blen;
1894 doing_utf8 = DO_UTF8(bufsv);
1895
7d59b7e4 1896 if (PerlIO_isutf8(IoIFP(io))) {
6aa2f6a7 1897 if (!SvUTF8(bufsv)) {
c9cb0f41
NC
1898 /* We don't modify the original scalar. */
1899 tmpbuf = bytes_to_utf8((const U8*) buffer, &blen);
1900 buffer = (char *) tmpbuf;
1901 doing_utf8 = TRUE;
1902 }
a0d0e21e 1903 }
c9cb0f41
NC
1904 else if (doing_utf8) {
1905 STRLEN tmplen = blen;
a79db61d 1906 U8 * const result = bytes_from_utf8((const U8*) buffer, &tmplen, &doing_utf8);
c9cb0f41
NC
1907 if (!doing_utf8) {
1908 tmpbuf = result;
1909 buffer = (char *) tmpbuf;
1910 blen = tmplen;
1911 }
1912 else {
1913 assert((char *)result == buffer);
1914 Perl_croak(aTHX_ "Wide character in %s", OP_DESC(PL_op));
1915 }
7d59b7e4
NIS
1916 }
1917
e2712234 1918#ifdef HAS_SOCKET
7627e6d0 1919 if (op_type == OP_SEND) {
e2712234
NC
1920 const int flags = SvIVx(*++MARK);
1921 if (SP > MARK) {
1922 STRLEN mlen;
1923 char * const sockbuf = SvPVx(*++MARK, mlen);
1924 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1925 flags, (struct sockaddr *)sockbuf, mlen);
1926 }
1927 else {
1928 retval
1929 = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, flags);
1930 }
7627e6d0
NC
1931 }
1932 else
e2712234 1933#endif
7627e6d0 1934 {
c9cb0f41
NC
1935 Size_t length = 0; /* This length is in characters. */
1936 STRLEN blen_chars;
7d59b7e4 1937 IV offset;
c9cb0f41
NC
1938
1939 if (doing_utf8) {
1940 if (tmpbuf) {
1941 /* The SV is bytes, and we've had to upgrade it. */
1942 blen_chars = orig_blen_bytes;
1943 } else {
1944 /* The SV really is UTF-8. */
3f914778
FC
1945 /* Don't call sv_len_utf8 on a magical or overloaded
1946 scalar, as we might get back a different result. */
1947 blen_chars = sv_or_pv_len_utf8(bufsv, buffer, blen);
c9cb0f41
NC
1948 }
1949 } else {
1950 blen_chars = blen;
1951 }
1952
1953 if (MARK >= SP) {
1954 length = blen_chars;
1955 } else {
1956#if Size_t_size > IVSIZE
1957 length = (Size_t)SvNVx(*++MARK);
1958#else
1959 length = (Size_t)SvIVx(*++MARK);
1960#endif
4b0c4b6f
NC
1961 if ((SSize_t)length < 0) {
1962 Safefree(tmpbuf);
c9cb0f41 1963 DIE(aTHX_ "Negative length");
4b0c4b6f 1964 }
7d59b7e4 1965 }
c9cb0f41 1966
bbce6d69 1967 if (MARK < SP) {
a0d0e21e 1968 offset = SvIVx(*++MARK);
bbce6d69 1969 if (offset < 0) {
4b0c4b6f
NC
1970 if (-offset > (IV)blen_chars) {
1971 Safefree(tmpbuf);
cea2e8a9 1972 DIE(aTHX_ "Offset outside string");
4b0c4b6f 1973 }
c9cb0f41 1974 offset += blen_chars;
3c946528 1975 } else if (offset > (IV)blen_chars) {
4b0c4b6f 1976 Safefree(tmpbuf);
cea2e8a9 1977 DIE(aTHX_ "Offset outside string");
4b0c4b6f 1978 }
bbce6d69 1979 } else
a0d0e21e 1980 offset = 0;
c9cb0f41
NC
1981 if (length > blen_chars - offset)
1982 length = blen_chars - offset;
1983 if (doing_utf8) {
1984 /* Here we convert length from characters to bytes. */
1985 if (tmpbuf || SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
1986 /* Either we had to convert the SV, or the SV is magical, or
1987 the SV has overloading, in which case we can't or mustn't
1988 or mustn't call it again. */
1989
1990 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
1991 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1992 } else {
1993 /* It's a real UTF-8 SV, and it's not going to change under
1994 us. Take advantage of any cache. */
1995 I32 start = offset;
1996 I32 len_I32 = length;
1997
1998 /* Convert the start and end character positions to bytes.
1999 Remember that the second argument to sv_pos_u2b is relative
2000 to the first. */
2001 sv_pos_u2b(bufsv, &start, &len_I32);
2002
2003 buffer += start;
2004 length = len_I32;
2005 }
7d59b7e4
NIS
2006 }
2007 else {
2008 buffer = buffer+offset;
2009 }
a7092146 2010#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 2011 if (IoTYPE(io) == IoTYPE_SOCKET) {
8c99d73e 2012 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
7d59b7e4 2013 buffer, length, 0);
a7092146
GS
2014 }
2015 else
2016#endif
2017 {
94e4c244 2018 /* See the note at doio.c:do_print about filesize limits. --jhi */
8c99d73e 2019 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
7d59b7e4 2020 buffer, length);
a7092146 2021 }
a0d0e21e 2022 }
c9cb0f41 2023
8c99d73e 2024 if (retval < 0)
a0d0e21e
LW
2025 goto say_undef;
2026 SP = ORIGMARK;
c9cb0f41 2027 if (doing_utf8)
f36eea10 2028 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
4b0c4b6f 2029
a79db61d 2030 Safefree(tmpbuf);
8c99d73e
GS
2031#if Size_t_size > IVSIZE
2032 PUSHn(retval);
2033#else
2034 PUSHi(retval);
2035#endif
a0d0e21e
LW
2036 RETURN;
2037
2038 say_undef:
a79db61d 2039 Safefree(tmpbuf);
a0d0e21e
LW
2040 SP = ORIGMARK;
2041 RETPUSHUNDEF;
2042}
2043
a0d0e21e
LW
2044PP(pp_eof)
2045{
27da23d5 2046 dVAR; dSP;
a0d0e21e 2047 GV *gv;
32e65323 2048 IO *io;
a5e1d062 2049 const MAGIC *mg;
bc0c81ca
NC
2050 /*
2051 * in Perl 5.12 and later, the additional parameter is a bitmask:
2052 * 0 = eof
2053 * 1 = eof(FH)
2054 * 2 = eof() <- ARGV magic
2055 *
2056 * I'll rely on the compiler's trace flow analysis to decide whether to
2057 * actually assign this out here, or punt it into the only block where it is
2058 * used. Doing it out here is DRY on the condition logic.
2059 */
2060 unsigned int which;
a0d0e21e 2061
bc0c81ca 2062 if (MAXARG) {
32e65323 2063 gv = PL_last_in_gv = MUTABLE_GV(POPs); /* eof(FH) */
bc0c81ca
NC
2064 which = 1;
2065 }
b5f55170
NC
2066 else {
2067 EXTEND(SP, 1);
2068
bc0c81ca 2069 if (PL_op->op_flags & OPf_SPECIAL) {
b5f55170 2070 gv = PL_last_in_gv = GvEGVx(PL_argvgv); /* eof() - ARGV magic */
bc0c81ca
NC
2071 which = 2;
2072 }
2073 else {
b5f55170 2074 gv = PL_last_in_gv; /* eof */
bc0c81ca
NC
2075 which = 0;
2076 }
b5f55170 2077 }
32e65323
CS
2078
2079 if (!gv)
2080 RETPUSHNO;
2081
2082 if ((io = GvIO(gv)) && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) {
3e0cb5de 2083 return tied_method1(SV_CONST(EOF), SP, MUTABLE_SV(io), mg, newSVuv(which));
146174a9 2084 }
4592e6ca 2085
32e65323
CS
2086 if (!MAXARG && (PL_op->op_flags & OPf_SPECIAL)) { /* eof() */
2087 if (io && !IoIFP(io)) {
b9f2b683 2088 if ((IoFLAGS(io) & IOf_START) && av_tindex(GvAVn(gv)) < 0) {
32e65323
CS
2089 IoLINES(io) = 0;
2090 IoFLAGS(io) &= ~IOf_START;
2091 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, NULL);
2092 if (GvSV(gv))
2093 sv_setpvs(GvSV(gv), "-");
2094 else
2095 GvSV(gv) = newSVpvs("-");
2096 SvSETMAGIC(GvSV(gv));
2097 }
2098 else if (!nextargv(gv))
2099 RETPUSHYES;
6136c704 2100 }
4592e6ca
NIS
2101 }
2102
32e65323 2103 PUSHs(boolSV(do_eof(gv)));
a0d0e21e
LW
2104 RETURN;
2105}
2106
2107PP(pp_tell)
2108{
27da23d5 2109 dVAR; dSP; dTARGET;
301e8125 2110 GV *gv;
5b468f54 2111 IO *io;
a0d0e21e 2112
b64a1294 2113 if (MAXARG != 0 && (TOPs || POPs))
159b6efe 2114 PL_last_in_gv = MUTABLE_GV(POPs);
ac3697cd
NC
2115 else
2116 EXTEND(SP, 1);
c4420975 2117 gv = PL_last_in_gv;
4592e6ca 2118
9c9f25b8
NC
2119 io = GvIO(gv);
2120 if (io) {
a5e1d062 2121 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2122 if (mg) {
3e0cb5de 2123 return tied_method0(SV_CONST(TELL), SP, MUTABLE_SV(io), mg);
a79db61d 2124 }
4592e6ca 2125 }
f4817f32 2126 else if (!gv) {
f03173f2
RGS
2127 if (!errno)
2128 SETERRNO(EBADF,RMS_IFI);
2129 PUSHi(-1);
2130 RETURN;
2131 }
4592e6ca 2132
146174a9
CB
2133#if LSEEKSIZE > IVSIZE
2134 PUSHn( do_tell(gv) );
2135#else
a0d0e21e 2136 PUSHi( do_tell(gv) );
146174a9 2137#endif
a0d0e21e
LW
2138 RETURN;
2139}
2140
137443ea
PP
2141PP(pp_sysseek)
2142{
27da23d5 2143 dVAR; dSP;
1df70142 2144 const int whence = POPi;
146174a9 2145#if LSEEKSIZE > IVSIZE
7452cf6a 2146 const Off_t offset = (Off_t)SvNVx(POPs);
146174a9 2147#else
7452cf6a 2148 const Off_t offset = (Off_t)SvIVx(POPs);
146174a9 2149#endif
a0d0e21e 2150
159b6efe 2151 GV * const gv = PL_last_in_gv = MUTABLE_GV(POPs);
9c9f25b8 2152 IO *const io = GvIO(gv);
4592e6ca 2153
9c9f25b8 2154 if (io) {
a5e1d062 2155 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2156 if (mg) {
cb50131a 2157#if LSEEKSIZE > IVSIZE
74f0b550 2158 SV *const offset_sv = newSVnv((NV) offset);
cb50131a 2159#else
74f0b550 2160 SV *const offset_sv = newSViv(offset);
cb50131a 2161#endif
bc0c81ca 2162
3e0cb5de 2163 return tied_method2(SV_CONST(SEEK), SP, MUTABLE_SV(io), mg, offset_sv,
d682515d 2164 newSViv(whence));
a79db61d 2165 }
4592e6ca
NIS
2166 }
2167
533c011a 2168 if (PL_op->op_type == OP_SEEK)
8903cb82
PP
2169 PUSHs(boolSV(do_seek(gv, offset, whence)));
2170 else {
0bcc34c2 2171 const Off_t sought = do_sysseek(gv, offset, whence);
b448e4fe 2172 if (sought < 0)
146174a9
CB
2173 PUSHs(&PL_sv_undef);
2174 else {
7452cf6a 2175 SV* const sv = sought ?
146174a9 2176#if LSEEKSIZE > IVSIZE
b448e4fe 2177 newSVnv((NV)sought)
146174a9 2178#else
b448e4fe 2179 newSViv(sought)
146174a9
CB
2180#endif
2181 : newSVpvn(zero_but_true, ZBTLEN);
6e449a3a 2182 mPUSHs(sv);
146174a9 2183 }
8903cb82 2184 }
a0d0e21e
LW
2185 RETURN;
2186}
2187
2188PP(pp_truncate)
2189{
97aff369 2190 dVAR;
39644a26 2191 dSP;
8c99d73e
GS
2192 /* There seems to be no consensus on the length type of truncate()
2193 * and ftruncate(), both off_t and size_t have supporters. In
2194 * general one would think that when using large files, off_t is
2195 * at least as wide as size_t, so using an off_t should be okay. */
2196 /* XXX Configure probe for the length type of *truncate() needed XXX */
0bcc34c2 2197 Off_t len;
a0d0e21e 2198
25342a55 2199#if Off_t_size > IVSIZE
0bcc34c2 2200 len = (Off_t)POPn;
8c99d73e 2201#else
0bcc34c2 2202 len = (Off_t)POPi;
8c99d73e
GS
2203#endif
2204 /* Checking for length < 0 is problematic as the type might or
301e8125 2205 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 2206 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2207 SETERRNO(0,0);
d05c1ba0 2208 {
5e0adc2d 2209 SV * const sv = POPs;
d05c1ba0
JH
2210 int result = 1;
2211 GV *tmpgv;
090bf15b
SR
2212 IO *io;
2213
42409c40
FC
2214 if (PL_op->op_flags & OPf_SPECIAL
2215 ? (tmpgv = gv_fetchsv(sv, 0, SVt_PVIO), 1)
2216 : !!(tmpgv = MAYBE_DEREF_GV(sv)) ) {
9c9f25b8
NC
2217 io = GvIO(tmpgv);
2218 if (!io)
090bf15b 2219 result = 0;
d05c1ba0 2220 else {
090bf15b 2221 PerlIO *fp;
090bf15b
SR
2222 do_ftruncate_io:
2223 TAINT_PROPER("truncate");
2224 if (!(fp = IoIFP(io))) {
2225 result = 0;
2226 }
2227 else {
2228 PerlIO_flush(fp);
cbdc8872 2229#ifdef HAS_TRUNCATE
090bf15b 2230 if (ftruncate(PerlIO_fileno(fp), len) < 0)
301e8125 2231#else
090bf15b 2232 if (my_chsize(PerlIO_fileno(fp), len) < 0)
cbdc8872 2233#endif
090bf15b
SR
2234 result = 0;
2235 }
d05c1ba0 2236 }
cbdc8872 2237 }
5e0adc2d 2238 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2239 io = MUTABLE_IO(SvRV(sv)); /* *main::FRED{IO} for example */
090bf15b 2240 goto do_ftruncate_io;
5e0adc2d
FC
2241 }
2242 else {
2243 const char * const name = SvPV_nomg_const_nolen(sv);
d05c1ba0 2244 TAINT_PROPER("truncate");
cbdc8872 2245#ifdef HAS_TRUNCATE
d05c1ba0
JH
2246 if (truncate(name, len) < 0)
2247 result = 0;
cbdc8872 2248#else
d05c1ba0 2249 {
7452cf6a 2250 const int tmpfd = PerlLIO_open(name, O_RDWR);
d05c1ba0 2251
7452cf6a 2252 if (tmpfd < 0)
cbdc8872 2253 result = 0;
d05c1ba0
JH
2254 else {
2255 if (my_chsize(tmpfd, len) < 0)
2256 result = 0;
2257 PerlLIO_close(tmpfd);
2258 }
cbdc8872 2259 }
a0d0e21e 2260#endif
d05c1ba0 2261 }
a0d0e21e 2262
d05c1ba0
JH
2263 if (result)
2264 RETPUSHYES;
2265 if (!errno)
93189314 2266 SETERRNO(EBADF,RMS_IFI);
d05c1ba0
JH
2267 RETPUSHUNDEF;
2268 }
a0d0e21e
LW
2269}
2270
a0d0e21e
LW
2271PP(pp_ioctl)
2272{
97aff369 2273 dVAR; dSP; dTARGET;
7452cf6a 2274 SV * const argsv = POPs;
1df70142 2275 const unsigned int func = POPu;
49225470 2276 int optype;
159b6efe 2277 GV * const gv = MUTABLE_GV(POPs);
8a6c0fcb 2278 IO * const io = GvIOn(gv);
a0d0e21e 2279 char *s;
324aa91a 2280 IV retval;
a0d0e21e 2281
8a6c0fcb 2282 if (!IoIFP(io)) {
51087808 2283 report_evil_fh(gv);
93189314 2284 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
a0d0e21e
LW
2285 RETPUSHUNDEF;
2286 }
2287
748a9306 2288 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2289 STRLEN len;
324aa91a 2290 STRLEN need;
748a9306 2291 s = SvPV_force(argsv, len);
324aa91a
HF
2292 need = IOCPARM_LEN(func);
2293 if (len < need) {
2294 s = Sv_Grow(argsv, need + 1);
2295 SvCUR_set(argsv, need);
a0d0e21e
LW
2296 }
2297
748a9306 2298 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW
2299 }
2300 else {
748a9306 2301 retval = SvIV(argsv);
c529f79d 2302 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW
2303 }
2304
49225470 2305 optype = PL_op->op_type;
ed4b2e6b 2306 TAINT_PROPER(PL_op_desc[optype]);
a0d0e21e
LW
2307
2308 if (optype == OP_IOCTL)
2309#ifdef HAS_IOCTL
76e3520e 2310 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2311#else
cea2e8a9 2312 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW
2313#endif
2314 else
c214f4ad
B
2315#ifndef HAS_FCNTL
2316 DIE(aTHX_ "fcntl is not implemented");
2317#else
55497cff 2318#if defined(OS2) && defined(__EMX__)
760ac839 2319 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2320#else
760ac839 2321 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2322#endif
6652bd42 2323#endif
a0d0e21e 2324
6652bd42 2325#if defined(HAS_IOCTL) || defined(HAS_FCNTL)
748a9306
LW
2326 if (SvPOK(argsv)) {
2327 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2328 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
53e06cf0 2329 OP_NAME(PL_op));
748a9306
LW
2330 s[SvCUR(argsv)] = 0; /* put our null back */
2331 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW
2332 }
2333
2334 if (retval == -1)
2335 RETPUSHUNDEF;
2336 if (retval != 0) {
2337 PUSHi(retval);
2338 }
2339 else {
8903cb82 2340 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e 2341 }
4808266b 2342#endif
c214f4ad 2343 RETURN;
a0d0e21e
LW
2344}
2345
2346PP(pp_flock)
2347{
9cad6237 2348#ifdef FLOCK
97aff369 2349 dVAR; dSP; dTARGET;
a0d0e21e 2350 I32 value;
7452cf6a 2351 const int argtype = POPi;
1f28cbca 2352 GV * const gv = MUTABLE_GV(POPs);
9c9f25b8
NC
2353 IO *const io = GvIO(gv);
2354 PerlIO *const fp = io ? IoIFP(io) : NULL;
16d20bd9 2355
0bcc34c2 2356 /* XXX Looks to me like io is always NULL at this point */
a0d0e21e 2357 if (fp) {
68dc0745 2358 (void)PerlIO_flush(fp);
76e3520e 2359 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2360 }
cb50131a 2361 else {
51087808 2362 report_evil_fh(gv);
a0d0e21e 2363 value = 0;
93189314 2364 SETERRNO(EBADF,RMS_IFI);
cb50131a 2365 }
a0d0e21e
LW
2366 PUSHi(value);
2367 RETURN;
2368#else
cea2e8a9 2369 DIE(aTHX_ PL_no_func, "flock()");
a0d0e21e
LW
2370#endif
2371}
2372
2373/* Sockets. */
2374
7627e6d0
NC
2375#ifdef HAS_SOCKET
2376
a0d0e21e
LW
2377PP(pp_socket)
2378{
97aff369 2379 dVAR; dSP;
7452cf6a
AL
2380 const int protocol = POPi;
2381 const int type = POPi;
2382 const int domain = POPi;
159b6efe 2383 GV * const gv = MUTABLE_GV(POPs);
5805b585 2384 IO * const io = GvIOn(gv);
a0d0e21e
LW
2385 int fd;
2386
57171420
BS
2387 if (IoIFP(io))
2388 do_close(gv, FALSE);
2389
a0d0e21e 2390 TAINT_PROPER("socket");
6ad3d225 2391 fd = PerlSock_socket(domain, type, protocol);
a0d0e21e
LW
2392 if (fd < 0)
2393 RETPUSHUNDEF;
460c8493
IZ
2394 IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2395 IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2396 IoTYPE(io) = IoTYPE_SOCKET;
a0d0e21e 2397 if (!IoIFP(io) || !IoOFP(io)) {
760ac839
LW
2398 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2399 if (IoOFP(io)) PerlIO_close(IoOFP(io));
6ad3d225 2400 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
a0d0e21e
LW
2401 RETPUSHUNDEF;
2402 }
8d2a6795
GS
2403#if defined(HAS_FCNTL) && defined(F_SETFD)
2404 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2405#endif
a0d0e21e
LW
2406
2407 RETPUSHYES;
a0d0e21e 2408}
7627e6d0 2409#endif
a0d0e21e
LW
2410
2411PP(pp_sockpair)
2412{
c95c94b1 2413#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
97aff369 2414 dVAR; dSP;
e0b7b5e2 2415 int fd[2];
7452cf6a
AL
2416 const int protocol = POPi;
2417 const int type = POPi;
2418 const int domain = POPi;
e0b7b5e2 2419
159b6efe 2420 GV * const gv2 = MUTABLE_GV(POPs);
49561e08
FC
2421 IO * const io2 = GvIOn(gv2);
2422 GV * const gv1 = MUTABLE_GV(POPs);
2423 IO * const io1 = GvIOn(gv1);
a0d0e21e 2424
49561e08 2425 if (IoIFP(io1))
dc0d0a5f 2426 do_close(gv1, FALSE);
49561e08 2427 if (IoIFP(io2))
dc0d0a5f 2428 do_close(gv2, FALSE);
57171420 2429
a0d0e21e 2430 TAINT_PROPER("socketpair");
6ad3d225 2431 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
a0d0e21e 2432 RETPUSHUNDEF;
460c8493
IZ
2433 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2434 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
50952442 2435 IoTYPE(io1) = IoTYPE_SOCKET;
460c8493
IZ
2436 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2437 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
50952442 2438 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2439 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW
2440 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2441 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2442 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW
2443 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2444 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2445 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW
2446 RETPUSHUNDEF;
2447 }
8d2a6795
GS
2448#if defined(HAS_FCNTL) && defined(F_SETFD)
2449 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2450 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2451#endif
a0d0e21e
LW
2452
2453 RETPUSHYES;
2454#else
cea2e8a9 2455 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW
2456#endif
2457}
2458
7627e6d0
NC
2459#ifdef HAS_SOCKET
2460
a0d0e21e
LW
2461PP(pp_bind)
2462{
97aff369 2463 dVAR; dSP;
7452cf6a 2464 SV * const addrsv = POPs;
349d4f2f
NC
2465 /* OK, so on what platform does bind modify addr? */
2466 const char *addr;
159b6efe 2467 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2468 IO * const io = GvIOn(gv);
a0d0e21e 2469 STRLEN len;
e0b7b5e2 2470 int op_type;
a0d0e21e 2471
8a6c0fcb 2472 if (!IoIFP(io))
a0d0e21e
LW
2473 goto nuts;
2474
349d4f2f 2475 addr = SvPV_const(addrsv, len);
e0b7b5e2 2476 op_type = PL_op->op_type;
32b81f04
NC
2477 TAINT_PROPER(PL_op_desc[op_type]);
2478 if ((op_type == OP_BIND
2479 ? PerlSock_bind(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len)
2480 : PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len))
2481 >= 0)
a0d0e21e
LW
2482 RETPUSHYES;
2483 else
2484 RETPUSHUNDEF;
2485
2486nuts:
fbcda526 2487 report_evil_fh(gv);
93189314 2488 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2489 RETPUSHUNDEF;
a0d0e21e
LW
2490}
2491
2492PP(pp_listen)
2493{
97aff369 2494 dVAR; dSP;
7452cf6a 2495 const int backlog = POPi;
159b6efe 2496 GV * const gv = MUTABLE_GV(POPs);
8a6c0fcb 2497 IO * const io = GvIOn(gv);
a0d0e21e 2498
8a6c0fcb 2499 if (!IoIFP(io))
a0d0e21e
LW
2500 goto nuts;
2501
6ad3d225 2502 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW
2503 RETPUSHYES;
2504 else
2505 RETPUSHUNDEF;
2506
2507nuts:
fbcda526 2508 report_evil_fh(gv);
93189314 2509 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2510 RETPUSHUNDEF;
a0d0e21e
LW
2511}
2512
2513PP(pp_accept)
2514{
97aff369 2515 dVAR; dSP; dTARGET;
eb578fdb 2516 IO *nstio;
93d47a36 2517 char namebuf[MAXPATHLEN];
b5afd346 2518#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
93d47a36
JH
2519 Sock_size_t len = sizeof (struct sockaddr_in);
2520#else
2521 Sock_size_t len = sizeof namebuf;
2522#endif
159b6efe
NC
2523 GV * const ggv = MUTABLE_GV(POPs);
2524 GV * const ngv = MUTABLE_GV(POPs);
a0d0e21e
LW
2525 int fd;
2526
8a6c0fcb 2527 IO * const gstio = GvIO(ggv);
a0d0e21e
LW
2528 if (!gstio || !IoIFP(gstio))
2529 goto nuts;
2530
2531 nstio = GvIOn(ngv);
93d47a36 2532 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
e294cc5d
JH
2533#if defined(OEMVS)
2534 if (len == 0) {
2535 /* Some platforms indicate zero length when an AF_UNIX client is
2536 * not bound. Simulate a non-zero-length sockaddr structure in
2537 * this case. */
2538 namebuf[0] = 0; /* sun_len */
2539 namebuf[1] = AF_UNIX; /* sun_family */
2540 len = 2;
2541 }
2542#endif
2543
a0d0e21e
LW
2544 if (fd < 0)
2545 goto badexit;
a70048fb
AB
2546 if (IoIFP(nstio))
2547 do_close(ngv, FALSE);
460c8493
IZ
2548 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2549 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2550 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2551 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW
2552 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2553 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2554 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW
2555 goto badexit;
2556 }
8d2a6795
GS
2557#if defined(HAS_FCNTL) && defined(F_SETFD)
2558 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2559#endif
a0d0e21e 2560
381c1bae 2561#ifdef __SCO_VERSION__
93d47a36 2562 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
381c1bae 2563#endif
ed79a026 2564
93d47a36 2565 PUSHp(namebuf, len);
a0d0e21e
LW
2566 RETURN;
2567
2568nuts:
fbcda526 2569 report_evil_fh(ggv);
93189314 2570 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW
2571
2572badexit:
2573 RETPUSHUNDEF;
2574
a0d0e21e
LW
2575}
2576
2577PP(pp_shutdown)
2578{
97aff369 2579 dVAR; dSP; dTARGET;
7452cf6a 2580 const int how = POPi;
159b6efe 2581 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2582 IO * const io = GvIOn(gv);
a0d0e21e 2583
8a6c0fcb 2584 if (!IoIFP(io))
a0d0e21e
LW
2585 goto nuts;
2586
6ad3d225 2587 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW
2588 RETURN;
2589
2590nuts:
fbcda526 2591 report_evil_fh(gv);
93189314 2592 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2593 RETPUSHUNDEF;
a0d0e21e
LW
2594}
2595
a0d0e21e
LW
2596PP(pp_ssockopt)
2597{
97aff369 2598 dVAR; dSP;
7452cf6a 2599 const int optype = PL_op->op_type;
561b68a9 2600 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
7452cf6a
AL
2601 const unsigned int optname = (unsigned int) POPi;
2602 const unsigned int lvl = (unsigned int) POPi;
159b6efe 2603 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2604 IO * const io = GvIOn(gv);
a0d0e21e 2605 int fd;
1e422769 2606 Sock_size_t len;
a0d0e21e 2607
49225470 2608 if (!IoIFP(io))
a0d0e21e
LW
2609 goto nuts;
2610
760ac839 2611 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW
2612 switch (optype) {
2613 case OP_GSOCKOPT:
748a9306 2614 SvGROW(sv, 257);
a0d0e21e 2615 (void)SvPOK_only(sv);
748a9306
LW
2616 SvCUR_set(sv,256);
2617 *SvEND(sv) ='\0';
1e422769 2618 len = SvCUR(sv);
6ad3d225 2619 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2620 goto nuts2;
1e422769 2621 SvCUR_set(sv, len);
748a9306 2622 *SvEND(sv) ='\0';
a0d0e21e
LW
2623 PUSHs(sv);
2624 break;
2625 case OP_SSOCKOPT: {
1215b447
JH
2626#if defined(__SYMBIAN32__)
2627# define SETSOCKOPT_OPTION_VALUE_T void *
2628#else
2629# define SETSOCKOPT_OPTION_VALUE_T const char *
2630#endif
2631 /* XXX TODO: We need to have a proper type (a Configure probe,
2632 * etc.) for what the C headers think of the third argument of
2633 * setsockopt(), the option_value read-only buffer: is it
2634 * a "char *", or a "void *", const or not. Some compilers
2635 * don't take kindly to e.g. assuming that "char *" implicitly
2636 * promotes to a "void *", or to explicitly promoting/demoting
2637 * consts to non/vice versa. The "const void *" is the SUS
2638 * definition, but that does not fly everywhere for the above
2639 * reasons. */
2640 SETSOCKOPT_OPTION_VALUE_T buf;
1e422769
PP
2641 int aint;
2642 if (SvPOKp(sv)) {
2d8e6c8d 2643 STRLEN l;
1215b447 2644 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2d8e6c8d 2645 len = l;
1e422769 2646 }
56ee1660 2647 else {
a0d0e21e 2648 aint = (int)SvIV(sv);
1215b447 2649 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
a0d0e21e
LW
2650 len = sizeof(int);
2651 }
6ad3d225 2652 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2653 goto nuts2;
3280af22 2654 PUSHs(&PL_sv_yes);
a0d0e21e
LW
2655 }
2656 break;
2657 }
2658 RETURN;
2659
2660nuts:
fbcda526 2661 report_evil_fh(gv);
93189314 2662 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW
2663nuts2:
2664 RETPUSHUNDEF;
2665
a0d0e21e
LW
2666}
2667
a0d0e21e
LW
2668PP(pp_getpeername)
2669{
97aff369 2670 dVAR; dSP;
7452cf6a 2671 const int optype = PL_op->op_type;
159b6efe 2672 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2673 IO * const io = GvIOn(gv);
7452cf6a 2674 Sock_size_t len;
a0d0e21e
LW
2675 SV *sv;
2676 int fd;
a0d0e21e 2677
49225470 2678 if (!IoIFP(io))
a0d0e21e
LW
2679 goto nuts;
2680
561b68a9 2681 sv = sv_2mortal(newSV(257));
748a9306 2682 (void)SvPOK_only(sv);
1e422769
PP
2683 len = 256;
2684 SvCUR_set(sv, len);
748a9306 2685 *SvEND(sv) ='\0';
760ac839 2686 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW
2687 switch (optype) {
2688 case OP_GETSOCKNAME:
6ad3d225 2689 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW
2690 goto nuts2;
2691 break;
2692 case OP_GETPEERNAME:
6ad3d225 2693 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2694 goto nuts2;
490ab354
JH
2695#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2696 {
2697 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";
2698 /* If the call succeeded, make sure we don't have a zeroed port/addr */
349d4f2f 2699 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2fbb330f 2700 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
490ab354 2701 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2702 goto nuts2;
490ab354
JH
2703 }
2704 }
2705#endif
a0d0e21e
LW
2706 break;
2707 }
13826f2c
CS
2708#ifdef BOGUS_GETNAME_RETURN
2709 /* Interactive Unix, getpeername() and getsockname()
2710 does not return valid namelen */
1e422769
PP
2711 if (len == BOGUS_GETNAME_RETURN)
2712 len = sizeof(struct sockaddr);
13826f2c 2713#endif
1e422769 2714 SvCUR_set(sv, len);
748a9306 2715 *SvEND(sv) ='\0';
a0d0e21e
LW
2716 PUSHs(sv);
2717 RETURN;
2718
2719nuts:
fbcda526 2720 report_evil_fh(gv);
93189314 2721 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW
2722nuts2:
2723 RETPUSHUNDEF;
7627e6d0 2724}
a0d0e21e 2725
a0d0e21e 2726#endif
a0d0e21e
LW
2727
2728/* Stat calls. */
2729
a0d0e21e
LW
2730PP(pp_stat)
2731{
97aff369 2732 dVAR;
39644a26 2733 dSP;
10edeb5d 2734 GV *gv = NULL;
55dd8d50 2735 IO *io = NULL;
54310121 2736 I32 gimme;
a0d0e21e 2737 I32 max = 13;
109c43ed 2738 SV* sv;
a0d0e21e 2739
109c43ed
FC
2740 if (PL_op->op_flags & OPf_REF ? (gv = cGVOP_gv, 1)
2741 : !!(sv=POPs, gv = MAYBE_DEREF_GV(sv))) {
8a4e5b40 2742 if (PL_op->op_type == OP_LSTAT) {
5d3e98de 2743 if (gv != PL_defgv) {
5d329e6e 2744 do_fstat_warning_check:
a2a5de95 2745 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
93fad930
FC
2746 "lstat() on filehandle%s%"SVf,
2747 gv ? " " : "",
2748 SVfARG(gv
bf29d05f
BF
2749 ? sv_2mortal(newSVhek(GvENAME_HEK(gv)))
2750 : &PL_sv_no));
5d3e98de 2751 } else if (PL_laststype != OP_LSTAT)
b042df57 2752 /* diag_listed_as: The stat preceding %s wasn't an lstat */
8a4e5b40 2753 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
8a4e5b40
DD
2754 }
2755
2dd78f96 2756 if (gv != PL_defgv) {
b8413ac3 2757 bool havefp;
0d5064f1 2758 do_fstat_have_io:
b8413ac3 2759 havefp = FALSE;
3280af22 2760 PL_laststype = OP_STAT;
0d5064f1 2761 PL_statgv = gv ? gv : (GV *)io;
76f68e9b 2762 sv_setpvs(PL_statname, "");
5228a96c 2763 if(gv) {
ad02613c 2764 io = GvIO(gv);
0d5064f1
FC
2765 }
2766 if (io) {
5228a96c
SP
2767 if (IoIFP(io)) {
2768 PL_laststatval =
2769 PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
8080e3c8 2770 havefp = TRUE;
5228a96c 2771 } else if (IoDIRP(io)) {
5228a96c 2772 PL_laststatval =
3497a01f 2773 PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache);
8080e3c8 2774 havefp = TRUE;
5228a96c
SP
2775 } else {
2776 PL_laststatval = -1;
2777 }
5228a96c 2778 }
05bb32d2 2779 else PL_laststatval = -1;
daa30a68 2780 if (PL_laststatval < 0 && !havefp) report_evil_fh(gv);
5228a96c
SP
2781 }
2782
9ddeeac9 2783 if (PL_laststatval < 0) {
a0d0e21e 2784 max = 0;
9ddeeac9 2785 }
a0d0e21e
LW
2786 }
2787 else {
109c43ed 2788 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2789 io = MUTABLE_IO(SvRV(sv));
ad02613c
SP
2790 if (PL_op->op_type == OP_LSTAT)
2791 goto do_fstat_warning_check;
2792 goto do_fstat_have_io;
2793 }
2794
4bac9ae4 2795 SvTAINTED_off(PL_statname); /* previous tainting irrelevant */
109c43ed 2796 sv_setpv(PL_statname, SvPV_nomg_const_nolen(sv));
a0714e2c 2797 PL_statgv = NULL;
533c011a
NIS
2798 PL_laststype = PL_op->op_type;
2799 if (PL_op->op_type == OP_LSTAT)
0510663f 2800 PL_laststatval = PerlLIO_lstat(SvPV_nolen_const(PL_statname), &PL_statcache);
a0d0e21e 2801 else
0510663f 2802 PL_laststatval = PerlLIO_stat(SvPV_nolen_const(PL_statname), &PL_statcache);
3280af22 2803 if (PL_laststatval < 0) {
5d37acd6
DM
2804 if (ckWARN(WARN_NEWLINE) &&
2805 strchr(SvPV_nolen_const(PL_statname), '\n'))
2806 {
2807 /* PL_warn_nl is constant */
2808 GCC_DIAG_IGNORE(-Wformat-nonliteral);
9014280d 2809 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
5d37acd6
DM
2810 GCC_DIAG_RESTORE;
2811 }
a0d0e21e
LW
2812 max = 0;
2813 }
2814 }
2815
54310121
PP
2816 gimme = GIMME_V;
2817 if (gimme != G_ARRAY) {
2818 if (gimme != G_VOID)
2819 XPUSHs(boolSV(max));
2820 RETURN;
a0d0e21e
LW
2821 }
2822 if (max) {
36477c24
PP
2823 EXTEND(SP, max);
2824 EXTEND_MORTAL(max);
6e449a3a 2825 mPUSHi(PL_statcache.st_dev);
8d8cba88
TC
2826#if ST_INO_SIZE > IVSIZE
2827 mPUSHn(PL_statcache.st_ino);
2828#else
2829# if ST_INO_SIGN <= 0
6e449a3a 2830 mPUSHi(PL_statcache.st_ino);
8d8cba88
TC
2831# else
2832 mPUSHu(PL_statcache.st_ino);
2833# endif
2834#endif
6e449a3a
MHM
2835 mPUSHu(PL_statcache.st_mode);
2836 mPUSHu(PL_statcache.st_nlink);
dfff4baf
BF
2837
2838 sv_setuid(PUSHmortal, PL_statcache.st_uid);
2839 sv_setgid(PUSHmortal, PL_statcache.st_gid);
2840
cbdc8872 2841#ifdef USE_STAT_RDEV
6e449a3a 2842 mPUSHi(PL_statcache.st_rdev);
cbdc8872 2843#else
84bafc02 2844 PUSHs(newSVpvs_flags("", SVs_TEMP));
cbdc8872 2845#endif
146174a9 2846#if Off_t_size > IVSIZE
6e449a3a 2847 mPUSHn(PL_statcache.st_size);
146174a9 2848#else
6e449a3a 2849 mPUSHi(PL_statcache.st_size);
146174a9 2850#endif
cbdc8872 2851#ifdef BIG_TIME
6e449a3a
MHM
2852 mPUSHn(PL_statcache.st_atime);
2853 mPUSHn(PL_statcache.st_mtime);
2854 mPUSHn(PL_statcache.st_ctime);
cbdc8872 2855#else
6e449a3a
MHM
2856 mPUSHi(PL_statcache.st_atime);
2857 mPUSHi(PL_statcache.st_mtime);
2858 mPUSHi(PL_statcache.st_ctime);
cbdc8872 2859#endif
a0d0e21e 2860#ifdef USE_STAT_BLOCKS
6e449a3a
MHM
2861 mPUSHu(PL_statcache.st_blksize);
2862 mPUSHu(PL_statcache.st_blocks);
a0d0e21e 2863#else
84bafc02
NC
2864 PUSHs(newSVpvs_flags("", SVs_TEMP));
2865 PUSHs(newSVpvs_flags("", SVs_TEMP));
a0d0e21e
LW
2866#endif
2867 }
2868 RETURN;
2869}
2870
6c48f025
NC
2871/* All filetest ops avoid manipulating the perl stack pointer in their main
2872 bodies (since commit d2c4d2d1e22d3125), and return using either
2873 S_ft_return_false() or S_ft_return_true(). These two helper functions are
2874 the only two which manipulate the perl stack. To ensure that no stack
2875 manipulation macros are used, the filetest ops avoid defining a local copy
2876 of the stack pointer with dSP. */
2877
8db8f6b6
FC
2878/* If the next filetest is stacked up with this one
2879 (PL_op->op_private & OPpFT_STACKING), we leave
2880 the original argument on the stack for success,
2881 and skip the stacked operators on failure.
2882 The next few macros/functions take care of this.
2883*/
2884
2885static OP *
9a6b02e8 2886S_ft_return_false(pTHX_ SV *ret) {
8db8f6b6 2887 OP *next = NORMAL;
697f9d37
NC
2888 dSP;
2889
226b9201 2890 if (PL_op->op_flags & OPf_REF) XPUSHs(ret);
8db8f6b6
FC
2891 else SETs(ret);
2892 PUTBACK;
697f9d37 2893
9a6b02e8
NC
2894 if (PL_op->op_private & OPpFT_STACKING) {
2895 while (OP_IS_FILETEST(next->op_type)
2896 && next->op_private & OPpFT_STACKED)
2897 next = next->op_next;
2898 }
8db8f6b6
FC
2899 return next;
2900}
2901
07ed4d4b
NC
2902PERL_STATIC_INLINE OP *
2903S_ft_return_true(pTHX_ SV *ret) {
2904 dSP;
2905 if (PL_op->op_flags & OPf_REF)
2906 XPUSHs(PL_op->op_private & OPpFT_STACKING ? (SV *)cGVOP_gv : (ret));
2907 else if (!(PL_op->op_private & OPpFT_STACKING))
2908 SETs(ret);
2909 PUTBACK;
2910 return NORMAL;
2911}
8db8f6b6 2912
48d023d6
NC
2913#define FT_RETURNNO return S_ft_return_false(aTHX_ &PL_sv_no)
2914#define FT_RETURNUNDEF return S_ft_return_false(aTHX_ &PL_sv_undef)
2915#define FT_RETURNYES return S_ft_return_true(aTHX_ &PL_sv_yes)
8db8f6b6 2916
6f1401dc 2917#define tryAMAGICftest_MG(chr) STMT_START { \
d2f67720 2918 if ( (SvFLAGS(*PL_stack_sp) & (SVf_ROK|SVs_GMG)) \
8db8f6b6
FC
2919 && PL_op->op_flags & OPf_KIDS) { \
2920 OP *next = S_try_amagic_ftest(aTHX_ chr); \
2921 if (next) return next; \
2922 } \
6f1401dc
DM
2923 } STMT_END
2924
8db8f6b6 2925STATIC OP *
6f1401dc
DM
2926S_try_amagic_ftest(pTHX_ char chr) {
2927 dVAR;
d2f67720 2928 SV *const arg = *PL_stack_sp;
6f1401dc
DM
2929
2930 assert(chr != '?');
c5780028 2931 if (!(PL_op->op_private & OPpFT_STACKING)) SvGETMAGIC(arg);
6f1401dc 2932
d2f67720 2933 if (SvAMAGIC(arg))
6f1401dc
DM
2934 {
2935 const char tmpchr = chr;
6f1401dc
DM
2936 SV * const tmpsv = amagic_call(arg,
2937 newSVpvn_flags(&tmpchr, 1, SVs_TEMP),
2938 ftest_amg, AMGf_unary);
2939
2940 if (!tmpsv)
8db8f6b6 2941 return NULL;
6f1401dc 2942
48d023d6
NC
2943 return SvTRUE(tmpsv)
2944 ? S_ft_return_true(aTHX_ tmpsv) : S_ft_return_false(aTHX_ tmpsv);
6f1401dc 2945 }
8db8f6b6 2946 return NULL;
6f1401dc
DM
2947}
2948
2949
a0d0e21e
LW
2950PP(pp_ftrread)
2951{
97aff369 2952 dVAR;
9cad6237 2953 I32 result;
af9e49b4
NC
2954 /* Not const, because things tweak this below. Not bool, because there's
2955 no guarantee that OPp_FT_ACCESS is <= CHAR_MAX */
2956#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2957 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
2958 /* Giving some sort of initial value silences compilers. */
2959# ifdef R_OK
2960 int access_mode = R_OK;
2961# else
2962 int access_mode = 0;
2963# endif
5ff3f7a4 2964#else
af9e49b4
NC
2965 /* access_mode is never used, but leaving use_access in makes the
2966 conditional compiling below much clearer. */
2967 I32 use_access = 0;
5ff3f7a4 2968#endif
2dcac756 2969 Mode_t stat_mode = S_IRUSR;
a0d0e21e 2970
af9e49b4 2971 bool effective = FALSE;
07fe7c6a 2972 char opchar = '?';
af9e49b4 2973
7fb13887
BM
2974 switch (PL_op->op_type) {
2975 case OP_FTRREAD: opchar = 'R'; break;
2976 case OP_FTRWRITE: opchar = 'W'; break;
2977 case OP_FTREXEC: opchar = 'X'; break;
2978 case OP_FTEREAD: opchar = 'r'; break;
2979 case OP_FTEWRITE: opchar = 'w'; break;
2980 case OP_FTEEXEC: opchar = 'x'; break;
2981 }
6f1401dc 2982 tryAMAGICftest_MG(opchar);
7fb13887 2983
af9e49b4
NC
2984 switch (PL_op->op_type) {
2985 case OP_FTRREAD:
2986#if !(defined(HAS_ACCESS) && defined(R_OK))
2987 use_access = 0;
2988#endif
2989 break;
2990
2991 case OP_FTRWRITE:
5ff3f7a4 2992#if defined(HAS_ACCESS) && defined(W_OK)
af9e49b4 2993 access_mode = W_OK;
5ff3f7a4 2994#else
af9e49b4 2995 use_access = 0;
5ff3f7a4 2996#endif
af9e49b4
NC
2997 stat_mode = S_IWUSR;
2998 break;
a0d0e21e 2999
af9e49b4 3000 case OP_FTREXEC:
5ff3f7a4 3001#if defined(HAS_ACCESS) && defined(X_OK)
af9e49b4 3002 access_mode = X_OK;
5ff3f7a4 3003#else
af9e49b4 3004 use_access = 0;
5ff3f7a4 3005#endif
af9e49b4
NC
3006 stat_mode = S_IXUSR;
3007 break;
a0d0e21e 3008
af9e49b4 3009 case OP_FTEWRITE:
faee0e31 3010#ifdef PERL_EFF_ACCESS
af9e49b4 3011 access_mode = W_OK;
5ff3f7a4 3012#endif
af9e49b4 3013 stat_mode = S_IWUSR;
7fb13887 3014 /* fall through */
a0d0e21e 3015
af9e49b4
NC
3016 case OP_FTEREAD:
3017#ifndef PERL_EFF_ACCESS
3018 use_access = 0;
3019#endif
3020 effective = TRUE;
3021 break;
3022
af9e49b4 3023 case OP_FTEEXEC:
faee0e31 3024#ifdef PERL_EFF_ACCESS
b376053d 3025 access_mode = X_OK;
5ff3f7a4 3026#else
af9e49b4 3027 use_access = 0;
5ff3f7a4 3028#endif
af9e49b4
NC
3029 stat_mode = S_IXUSR;
3030 effective = TRUE;
3031 break;
3032 }
a0d0e21e 3033
af9e49b4
NC
3034 if (use_access) {
3035#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
d2f67720 3036 const char *name = SvPV_nolen(*PL_stack_sp);
af9e49b4
NC
3037 if (effective) {
3038# ifdef PERL_EFF_ACCESS
3039 result = PERL_EFF_ACCESS(name, access_mode);
3040# else
3041 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
3042 OP_NAME(PL_op));
3043# endif
3044 }
3045 else {
3046# ifdef HAS_ACCESS
3047 result = access(name, access_mode);
3048# else
3049 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
3050# endif
3051 }
5ff3f7a4 3052 if (result == 0)
d2c4d2d1 3053 FT_RETURNYES;
5ff3f7a4 3054 if (result < 0)
d2c4d2d1
FC
3055 FT_RETURNUNDEF;
3056 FT_RETURNNO;
af9e49b4 3057#endif
22865c03 3058 }
af9e49b4 3059
40c852de 3060 result = my_stat_flags(0);
a0d0e21e 3061 if (result < 0)
8db8f6b6 3062 FT_RETURNUNDEF;
af9e49b4 3063 if (cando(stat_mode, effective, &PL_statcache))
8db8f6b6
FC
3064 FT_RETURNYES;
3065 FT_RETURNNO;
a0d0e21e
LW
3066}
3067
3068PP(pp_ftis)
3069{
97aff369 3070 dVAR;
fbb0b3b3 3071 I32 result;
d7f0a2f4 3072 const int op_type = PL_op->op_type;
07fe7c6a 3073 char opchar = '?';
07fe7c6a
BM
3074
3075 switch (op_type) {
3076 case OP_FTIS: opchar = 'e'; break;
3077 case OP_FTSIZE: opchar = 's'; break;
3078 case OP_FTMTIME: opchar = 'M'; break;
3079 case OP_FTCTIME: opchar = 'C'; break;
3080 case OP_FTATIME: opchar = 'A'; break;
3081 }
6f1401dc 3082 tryAMAGICftest_MG(opchar);
07fe7c6a 3083
40c852de 3084 result = my_stat_flags(0);
a0d0e21e 3085 if (result < 0)
8db8f6b6 3086 FT_RETURNUNDEF;
d7f0a2f4 3087 if (op_type == OP_FTIS)
8db8f6b6 3088 FT_RETURNYES;
957b0e1d 3089 {
d7f0a2f4
NC
3090 /* You can't dTARGET inside OP_FTIS, because you'll get
3091 "panic: pad_sv po" - the op is not flagged to have a target. */
957b0e1d 3092 dTARGET;
d7f0a2f4 3093 switch (op_type) {
957b0e1d
NC
3094 case OP_FTSIZE:
3095#if Off_t_size > IVSIZE
8db8f6b6 3096 sv_setnv(TARG, (NV)PL_statcache.st_size);
957b0e1d 3097#else
8db8f6b6 3098 sv_setiv(TARG, (IV)PL_statcache.st_size);
957b0e1d
NC
3099#endif
3100 break;
3101 case OP_FTMTIME:
8db8f6b6
FC
3102 sv_setnv(TARG,
3103 ((NV)PL_basetime - PL_statcache.st_mtime) / 86400.0 );
957b0e1d
NC
3104 break;
3105 case OP_FTATIME:
8db8f6b6
FC
3106 sv_setnv(TARG,
3107 ((NV)PL_basetime - PL_statcache.st_atime) / 86400.0 );
957b0e1d
NC
3108 break;
3109 case OP_FTCTIME:
8db8f6b6
FC
3110 sv_setnv(TARG,
3111 ((NV)PL_basetime - PL_statcache.st_ctime) / 86400.0 );
957b0e1d
NC
3112 break;
3113 }
8db8f6b6 3114 SvSETMAGIC(TARG);
48d023d6
NC
3115 return SvTRUE_nomg(TARG)
3116 ? S_ft_return_true(aTHX_ TARG) : S_ft_return_false(aTHX_ TARG);
957b0e1d 3117 }
a0d0e21e
LW
3118}
3119
a0d0e21e
LW
3120PP(pp_ftrowned)
3121{
97aff369 3122 dVAR;
fbb0b3b3 3123 I32 result;
07fe7c6a 3124 char opchar = '?';
17ad201a 3125
7fb13887
BM
3126 switch (PL_op->op_type) {
3127 case OP_FTROWNED: opchar = 'O'; break;
3128 case OP_FTEOWNED: opchar = 'o'; break;
3129 case OP_FTZERO: opchar = 'z'; break;
3130 case OP_FTSOCK: opchar = 'S'; break;
3131 case OP_FTCHR: opchar = 'c'; break;
3132 case OP_FTBLK: opchar = 'b'; break;
3133 case OP_FTFILE: opchar = 'f'; break;
3134 case OP_FTDIR: opchar = 'd'; break;
3135 case OP_FTPIPE: opchar = 'p'; break;
3136 case OP_FTSUID: opchar = 'u'; break;
3137 case OP_FTSGID: opchar = 'g'; break;
3138 case OP_FTSVTX: opchar = 'k'; break;
3139 }
6f1401dc 3140 tryAMAGICftest_MG(opchar);
7fb13887 3141
17ad201a
NC
3142 /* I believe that all these three are likely to be defined on most every
3143 system these days. */
3144#ifndef S_ISUID
c410dd6a 3145 if(PL_op->op_type == OP_FTSUID) {
8db8f6b6 3146 FT_RETURNNO;
c410dd6a 3147 }
17ad201a
NC
3148#endif
3149#ifndef S_ISGID
c410dd6a 3150 if(PL_op->op_type == OP_FTSGID) {
8db8f6b6 3151 FT_RETURNNO;
c410dd6a 3152 }
17ad201a
NC
3153#endif
3154#ifndef S_ISVTX
c410dd6a 3155 if(PL_op->op_type == OP_FTSVTX) {
8db8f6b6 3156 FT_RETURNNO;
c410dd6a 3157 }
17ad201a
NC
3158#endif
3159
40c852de 3160 result = my_stat_flags(0);
a0d0e21e 3161 if (result < 0)
8db8f6b6 3162 FT_RETURNUNDEF;
f1cb2d48
NC
3163 switch (PL_op->op_type) {
3164 case OP_FTROWNED:
985213f2 3165 if (PL_statcache.st_uid == PerlProc_getuid())
8db8f6b6 3166 FT_RETURNYES;
f1cb2d48
NC
3167 break;
3168 case OP_FTEOWNED:
985213f2 3169 if (PL_statcache.st_uid == PerlProc_geteuid())
8db8f6b6 3170 FT_RETURNYES;
f1cb2d48
NC
3171 break;
3172 case OP_FTZERO:
3173 if (PL_statcache.st_size == 0)
8db8f6b6 3174 FT_RETURNYES;
f1cb2d48
NC
3175 break;
3176 case OP_FTSOCK:
3177 if (S_ISSOCK(PL_statcache.st_mode))
8db8f6b6 3178 FT_RETURNYES;
f1cb2d48
NC
3179 break;
3180 case OP_FTCHR:
3181 if (S_ISCHR(PL_statcache.st_mode))
8db8f6b6 3182 FT_RETURNYES;
f1cb2d48
NC
3183 break;
3184 case OP_FTBLK:
3185 if (S_ISBLK(PL_statcache.st_mode))
8db8f6b6 3186 FT_RETURNYES;
f1cb2d48
NC
3187 break;
3188 case OP_FTFILE:
3189 if (S_ISREG(PL_statcache.st_mode))
8db8f6b6 3190 FT_RETURNYES;
f1cb2d48
NC
3191 break;
3192 case OP_FTDIR:
3193 if (S_ISDIR(PL_statcache.st_mode))
8db8f6b6 3194 FT_RETURNYES;
f1cb2d48
NC
3195 break;
3196 case OP_FTPIPE:
3197 if (S_ISFIFO(PL_statcache.st_mode))
8db8f6b6 3198 FT_RETURNYES;
f1cb2d48 3199 break;
a0d0e21e 3200#ifdef S_ISUID
17ad201a
NC
3201 case OP_FTSUID:
3202 if (PL_statcache.st_mode & S_ISUID)
8db8f6b6 3203 FT_RETURNYES;
17ad201a 3204 break;
a0d0e21e 3205#endif
a0d0e21e 3206#ifdef S_ISGID
17ad201a
NC
3207 case OP_FTSGID:
3208 if (PL_statcache.st_mode & S_ISGID)
8db8f6b6 3209 FT_RETURNYES;
17ad201a
NC
3210 break;
3211#endif
3212#ifdef S_ISVTX
3213 case OP_FTSVTX:
3214 if (PL_statcache.st_mode & S_ISVTX)
8db8f6b6 3215 FT_RETURNYES;
17ad201a 3216 break;
a0d0e21e 3217#endif
17ad201a 3218 }
8db8f6b6 3219 FT_RETURNNO;
a0d0e21e
LW
3220}
3221
17ad201a 3222PP(pp_ftlink)
a0d0e21e 3223{
97aff369 3224 dVAR;
500ff13f 3225 I32 result;
07fe7c6a 3226
6f1401dc 3227 tryAMAGICftest_MG('l');
40c852de 3228 result = my_lstat_flags(0);
500ff13f 3229
a0d0e21e 3230 if (result < 0)
8db8f6b6 3231 FT_RETURNUNDEF;
17ad201a 3232 if (S_ISLNK(PL_statcache.st_mode))
8db8f6b6
FC
3233 FT_RETURNYES;
3234 FT_RETURNNO;
a0d0e21e
LW
3235}
3236
3237PP(pp_fttty)
3238{
97aff369 3239 dVAR;
a0d0e21e
LW
3240 int fd;
3241 GV *gv;
0784aae0 3242 char *name = NULL;
40c852de 3243 STRLEN namelen;
fb73857a 3244
6f1401dc 3245 tryAMAGICftest_MG('t');
07fe7c6a 3246
533c011a 3247 if (PL_op->op_flags & OPf_REF)
146174a9 3248 gv = cGVOP_gv;
e5e154d2 3249 else {
d2f67720 3250 SV *tmpsv = *PL_stack_sp;
e5e154d2 3251 if (!(gv = MAYBE_DEREF_GV_nomg(tmpsv))) {
40c852de
DM
3252 name = SvPV_nomg(tmpsv, namelen);
3253 gv = gv_fetchpvn_flags(name, namelen, SvUTF8(tmpsv), SVt_PVIO);
e5e154d2 3254 }
40c852de 3255 }
fb73857a 3256
a0d0e21e 3257 if (GvIO(gv) && IoIFP(GvIOp(gv)))
760ac839 3258 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
b6cb94c5 3259 else if (name && isDIGIT(*name))
40c852de 3260 fd = atoi(name);
a0d0e21e 3261 else
8db8f6b6 3262 FT_RETURNUNDEF;
6ad3d225 3263 if (PerlLIO_isatty(fd))
8db8f6b6
FC
3264 FT_RETURNYES;
3265 FT_RETURNNO;
a0d0e21e
LW
3266}
3267
a0d0e21e
LW
3268PP(pp_fttext)
3269{
97aff369 3270 dVAR;
a0d0e21e 3271 I32 i;
b66f3475 3272 SSize_t len;
a0d0e21e
LW
3273 I32 odd = 0;
3274 STDCHAR tbuf[512];
eb578fdb
KW
3275 STDCHAR *s;
3276 IO *io;
3277 SV *sv = NULL;
5f05dabc 3278 GV *gv;
146174a9 3279 PerlIO *fp;
a0d0e21e 3280
6f1401dc 3281 tryAMAGICftest_MG(PL_op->op_type == OP_FTTEXT ? 'T' : 'B');
07fe7c6a 3282
533c011a 3283 if (PL_op->op_flags & OPf_REF)
146174a9 3284 gv = cGVOP_gv;
d2c4d2d1 3285 else if ((PL_op->op_private & (OPpFT_STACKED|OPpFT_AFTER_t))
8db8f6b6 3286 == OPpFT_STACKED)
ba8182f8 3287 gv = PL_defgv;
d2c4d2d1 3288 else {
d2f67720 3289 sv = *PL_stack_sp;
d2c4d2d1 3290 gv = MAYBE_DEREF_GV_nomg(sv);
8db8f6b6 3291 }
5f05dabc
PP
3292
3293 if (gv) {
3280af22
NIS
3294 if (gv == PL_defgv) {
3295 if (PL_statgv)
bd5f6c01
FC
3296 io = SvTYPE(PL_statgv) == SVt_PVIO
3297 ? (IO *)PL_statgv
3298 : GvIO(PL_statgv);
a0d0e21e 3299 else {
a0d0e21e
LW
3300 goto really_filename;
3301 }
3302 }
3303 else {
3280af22 3304 PL_statgv = gv;
76f68e9b 3305 sv_setpvs(PL_statname, "");
3280af22 3306 io = GvIO(PL_statgv);
a0d0e21e 3307 }
eb4c377a 3308 PL_laststatval = -1;
21a64c3e 3309 PL_laststype = OP_STAT;
a0d0e21e 3310 if (io && IoIFP(io)) {
5f05dabc 3311 if (! PerlIO_has_base(IoIFP(io)))
cea2e8a9 3312 DIE(aTHX_ "-T and -B not implemented on filehandles");
3280af22
NIS
3313 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3314 if (PL_laststatval < 0)
8db8f6b6 3315 FT_RETURNUNDEF;
9cbac4c7 3316 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
533c011a 3317 if (PL_op->op_type == OP_FTTEXT)
8db8f6b6 3318 FT_RETURNNO;
a0d0e21e 3319 else
8db8f6b6 3320 FT_RETURNYES;
9cbac4c7 3321 }
a20bf0c3 3322 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
760ac839 3323 i = PerlIO_getc(IoIFP(io));
a0d0e21e 3324 if (i != EOF)
760ac839 3325 (void)PerlIO_ungetc(IoIFP(io),i);
a0d0e21e 3326 }
a20bf0c3 3327 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
8db8f6b6 3328 FT_RETURNYES;
a20bf0c3
JH
3329 len = PerlIO_get_bufsiz(IoIFP(io));
3330 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
760ac839
LW
3331 /* sfio can have large buffers - limit to 512 */
3332 if (len > 512)
3333 len = 512;
a0d0e21e
LW
3334 }
3335 else {
2ad48547 3336 SETERRNO(EBADF,RMS_IFI);
3f12cff4 3337 report_evil_fh(gv);
93189314 3338 SETERRNO(EBADF,RMS_IFI);
8db8f6b6 3339 FT_RETURNUNDEF;
a0d0e21e
LW
3340 }
3341 }
3342 else {
81e9306f 3343 sv_setpv(PL_statname, SvPV_nomg_const_nolen(sv));
5f05dabc 3344 really_filename:
a0714e2c 3345 PL_statgv = NULL;
aa07b2f6 3346 if (!(fp = PerlIO_open(SvPVX_const(PL_statname), "r"))) {
ad2d99e3
FC
3347 if (!gv) {