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pp_sys.c remove null checks and locality
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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
1249typeglob. As PL_defoutgv "owns" a reference on its typeglob, the reference
1250count of the passed in typeglob is increased by one, and the reference count
1251of the typeglob that PL_defoutgv points to is decreased by one.
1252
1253=cut
1254*/
1255
4633a7c4 1256void
864dbfa3 1257Perl_setdefout(pTHX_ GV *gv)
4633a7c4 1258{
97aff369 1259 dVAR;
9a9bb270
FC
1260 PERL_ARGS_ASSERT_SETDEFOUT;
1261 SvREFCNT_inc_simple_void_NN(gv);
ef8d46e8 1262 SvREFCNT_dec(PL_defoutgv);
3280af22 1263 PL_defoutgv = gv;
4633a7c4
LW
1264}
1265
a0d0e21e
LW
1266PP(pp_select)
1267{
97aff369 1268 dVAR; dSP; dTARGET;
4633a7c4 1269 HV *hv;
159b6efe 1270 GV * const newdefout = (PL_op->op_private > 0) ? (MUTABLE_GV(POPs)) : NULL;
099be4f1 1271 GV * egv = GvEGVx(PL_defoutgv);
0df2568b 1272 GV * const *gvp;
4633a7c4 1273
4633a7c4 1274 if (!egv)
3280af22 1275 egv = PL_defoutgv;
099be4f1 1276 hv = isGV_with_GP(egv) ? GvSTASH(egv) : NULL;
0df2568b 1277 gvp = hv && HvENAME(hv)
204263bc
FC
1278 ? (GV**)hv_fetch(hv, GvNAME(egv), HEK_UTF8(GvNAME_HEK(egv)) ? -GvNAMELEN(egv) : GvNAMELEN(egv), FALSE)
1279 : NULL;
0df2568b 1280 if (gvp && *gvp == egv) {
bd61b366 1281 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
f86702cc 1282 XPUSHTARG;
0df2568b
FC
1283 }
1284 else {
ad64d0ec 1285 mXPUSHs(newRV(MUTABLE_SV(egv)));
4633a7c4
LW
1286 }
1287
1288 if (newdefout) {
ded8aa31
GS
1289 if (!GvIO(newdefout))
1290 gv_IOadd(newdefout);
4633a7c4
LW
1291 setdefout(newdefout);
1292 }
1293
a0d0e21e
LW
1294 RETURN;
1295}
1296
1297PP(pp_getc)
1298{
27da23d5 1299 dVAR; dSP; dTARGET;
30901a8a
FC
1300 GV * const gv =
1301 MAXARG==0 || (!TOPs && !POPs) ? PL_stdingv : MUTABLE_GV(POPs);
9c9f25b8 1302 IO *const io = GvIO(gv);
2ae324a7 1303
ac3697cd
NC
1304 if (MAXARG == 0)
1305 EXTEND(SP, 1);
1306
9c9f25b8 1307 if (io) {
a5e1d062 1308 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1309 if (mg) {
0240605e 1310 const U32 gimme = GIMME_V;
3e0cb5de 1311 Perl_tied_method(aTHX_ SV_CONST(GETC), SP, MUTABLE_SV(io), mg, gimme, 0);
0240605e
NC
1312 if (gimme == G_SCALAR) {
1313 SPAGAIN;
a79db61d 1314 SvSetMagicSV_nosteal(TARG, TOPs);
0240605e
NC
1315 }
1316 return NORMAL;
a79db61d 1317 }
2ae324a7 1318 }
90133b69 1319 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
51087808 1320 if (!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
831e4cc3 1321 report_evil_fh(gv);
b5fe5ca2 1322 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1323 RETPUSHUNDEF;
90133b69 1324 }
bbce6d69 1325 TAINT;
76f68e9b 1326 sv_setpvs(TARG, " ");
9bc64814 1327 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
7d59b7e4
NIS
1328 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1329 /* Find out how many bytes the char needs */
aa07b2f6 1330 Size_t len = UTF8SKIP(SvPVX_const(TARG));
7d59b7e4
NIS
1331 if (len > 1) {
1332 SvGROW(TARG,len+1);
1333 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1334 SvCUR_set(TARG,1+len);
1335 }
1336 SvUTF8_on(TARG);
1337 }
a0d0e21e
LW
1338 PUSHTARG;
1339 RETURN;
1340}
1341
76e3520e 1342STATIC OP *
cea2e8a9 1343S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
a0d0e21e 1344{
27da23d5 1345 dVAR;
eb578fdb 1346 PERL_CONTEXT *cx;
f54cb97a 1347 const I32 gimme = GIMME_V;
a0d0e21e 1348
7918f24d
NC
1349 PERL_ARGS_ASSERT_DOFORM;
1350
7b190374
NC
1351 if (cv && CvCLONE(cv))
1352 cv = MUTABLE_CV(sv_2mortal(MUTABLE_SV(cv_clone(cv))));
1353
a0d0e21e
LW
1354 ENTER;
1355 SAVETMPS;
1356
146174a9 1357 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
10067d9a 1358 PUSHFORMAT(cx, retop);
f32c7e86
FC
1359 if (CvDEPTH(cv) >= 2) {
1360 PERL_STACK_OVERFLOW_CHECK();
1361 pad_push(CvPADLIST(cv), CvDEPTH(cv));
1362 }
fd617465 1363 SAVECOMPPAD();
f32c7e86 1364 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), CvDEPTH(cv));
a0d0e21e 1365
4633a7c4 1366 setdefout(gv); /* locally select filehandle so $% et al work */
a0d0e21e
LW
1367 return CvSTART(cv);
1368}
1369
1370PP(pp_enterwrite)
1371{
97aff369 1372 dVAR;
39644a26 1373 dSP;
eb578fdb
KW
1374 GV *gv;
1375 IO *io;
a0d0e21e 1376 GV *fgv;
07822e36
JH
1377 CV *cv = NULL;
1378 SV *tmpsv = NULL;
a0d0e21e 1379
2addaaf3 1380 if (MAXARG == 0) {
2addaaf3 1381 EXTEND(SP, 1);
49225470 1382 gv = PL_defoutgv;
2addaaf3 1383 }
a0d0e21e 1384 else {
159b6efe 1385 gv = MUTABLE_GV(POPs);
a0d0e21e 1386 if (!gv)
3280af22 1387 gv = PL_defoutgv;
a0d0e21e 1388 }
a0d0e21e
LW
1389 io = GvIO(gv);
1390 if (!io) {
1391 RETPUSHNO;
1392 }
1393 if (IoFMT_GV(io))
1394 fgv = IoFMT_GV(io);
1395 else
1396 fgv = gv;
1397
2d1ebc9b 1398 assert(fgv);
a79db61d 1399
a0d0e21e 1400 cv = GvFORM(fgv);
a0d0e21e 1401 if (!cv) {
10edeb5d 1402 tmpsv = sv_newmortal();
f4a7049d 1403 gv_efullname4(tmpsv, fgv, NULL, FALSE);
2d1ebc9b 1404 DIE(aTHX_ "Undefined format \"%"SVf"\" called", SVfARG(tmpsv));
a0d0e21e 1405 }
44a8e56a 1406 IoFLAGS(io) &= ~IOf_DIDTOP;
8e4ecf23 1407 RETURNOP(doform(cv,gv,PL_op->op_next));
a0d0e21e
LW
1408}
1409
1410PP(pp_leavewrite)
1411{
27da23d5 1412 dVAR; dSP;
f9c764c5 1413 GV * const gv = cxstack[cxstack_ix].blk_format.gv;
eb578fdb 1414 IO * const io = GvIOp(gv);
8b8cacda 1415 PerlIO *ofp;
760ac839 1416 PerlIO *fp;
8772537c
AL
1417 SV **newsp;
1418 I32 gimme;
eb578fdb 1419 PERL_CONTEXT *cx;
8f89e5a9 1420 OP *retop;
a0d0e21e 1421
8b8cacda 1422 if (!io || !(ofp = IoOFP(io)))
1423 goto forget_top;
1424
760ac839 1425 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1426 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
8b8cacda 1427
3280af22
NIS
1428 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1429 PL_formtarget != PL_toptarget)
a0d0e21e 1430 {
4633a7c4
LW
1431 GV *fgv;
1432 CV *cv;
a0d0e21e
LW
1433 if (!IoTOP_GV(io)) {
1434 GV *topgv;
a0d0e21e
LW
1435
1436 if (!IoTOP_NAME(io)) {
1b6737cc 1437 SV *topname;
a0d0e21e
LW
1438 if (!IoFMT_NAME(io))
1439 IoFMT_NAME(io) = savepv(GvNAME(gv));
d0c0e7dd
FC
1440 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%"HEKf"_TOP",
1441 HEKfARG(GvNAME_HEK(gv))));
f776e3cd 1442 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
748a9306 1443 if ((topgv && GvFORM(topgv)) ||
fafc274c 1444 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
2e0de35c 1445 IoTOP_NAME(io) = savesvpv(topname);
a0d0e21e 1446 else
89529cee 1447 IoTOP_NAME(io) = savepvs("top");
a0d0e21e 1448 }
f776e3cd 1449 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
a0d0e21e 1450 if (!topgv || !GvFORM(topgv)) {
b929a54b 1451 IoLINES_LEFT(io) = IoPAGE_LEN(io);
a0d0e21e
LW
1452 goto forget_top;
1453 }
1454 IoTOP_GV(io) = topgv;
1455 }
748a9306
LW
1456 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1457 I32 lines = IoLINES_LEFT(io);
504618e9 1458 const char *s = SvPVX_const(PL_formtarget);
8e07c86e
AD
1459 if (lines <= 0) /* Yow, header didn't even fit!!! */
1460 goto forget_top;
748a9306
LW
1461 while (lines-- > 0) {
1462 s = strchr(s, '\n');
1463 if (!s)
1464 break;
1465 s++;
1466 }
1467 if (s) {
f54cb97a 1468 const STRLEN save = SvCUR(PL_formtarget);
aa07b2f6 1469 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
d75029d0
NIS
1470 do_print(PL_formtarget, ofp);
1471 SvCUR_set(PL_formtarget, save);
3280af22
NIS
1472 sv_chop(PL_formtarget, s);
1473 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW
1474 }
1475 }
a0d0e21e 1476 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
f6dfc736 1477 do_print(GvSV(gv_fetchpvs("\f", GV_ADD, SVt_PV)), ofp);
a0d0e21e
LW
1478 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1479 IoPAGE(io)++;
3280af22 1480 PL_formtarget = PL_toptarget;
748a9306 1481 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4 1482 fgv = IoTOP_GV(io);
636013b3 1483 assert(fgv); /* IoTOP_GV(io) should have been set above */
4633a7c4 1484 cv = GvFORM(fgv);
1df70142
AL
1485 if (!cv) {
1486 SV * const sv = sv_newmortal();
bd61b366 1487 gv_efullname4(sv, fgv, NULL, FALSE);
44b7e78a 1488 DIE(aTHX_ "Undefined top format \"%"SVf"\" called", SVfARG(sv));
4633a7c4 1489 }
43cd5cb7 1490 return doform(cv, gv, PL_op);
a0d0e21e
LW
1491 }
1492
1493 forget_top:
3280af22 1494 POPBLOCK(cx,PL_curpm);
8f89e5a9 1495 retop = cx->blk_sub.retop;
25375124 1496 POPFORMAT(cx);
43cd5cb7 1497 SP = newsp; /* ignore retval of formline */
a0d0e21e
LW
1498 LEAVE;
1499
c782dc1d
FC
1500 if (!io || !(fp = IoOFP(io))) {
1501 if (io && IoIFP(io))
7716c5c5 1502 report_wrongway_fh(gv, '<');
c521cf7c 1503 else
7716c5c5 1504 report_evil_fh(gv);
3280af22 1505 PUSHs(&PL_sv_no);
a0d0e21e
LW
1506 }
1507 else {
3280af22 1508 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
a2a5de95 1509 Perl_ck_warner(aTHX_ packWARN(WARN_IO), "page overflow");
a0d0e21e 1510 }
d75029d0 1511 if (!do_print(PL_formtarget, fp))
3280af22 1512 PUSHs(&PL_sv_no);
a0d0e21e 1513 else {
3280af22
NIS
1514 FmLINES(PL_formtarget) = 0;
1515 SvCUR_set(PL_formtarget, 0);
1516 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1517 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1518 (void)PerlIO_flush(fp);
3280af22 1519 PUSHs(&PL_sv_yes);
a0d0e21e
LW
1520 }
1521 }
3280af22 1522 PL_formtarget = PL_bodytarget;
29033a8a 1523 PERL_UNUSED_VAR(gimme);
8e4ecf23 1524 RETURNOP(retop);
a0d0e21e
LW
1525}
1526
1527PP(pp_prtf)
1528{
27da23d5 1529 dVAR; dSP; dMARK; dORIGMARK;
760ac839 1530 PerlIO *fp;
a0d0e21e 1531
159b6efe
NC
1532 GV * const gv
1533 = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv;
9c9f25b8 1534 IO *const io = GvIO(gv);
46fc3d4c 1535
87385d72
FC
1536 /* Treat empty list as "" */
1537 if (MARK == SP) XPUSHs(&PL_sv_no);
1538
9c9f25b8 1539 if (io) {
a5e1d062 1540 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d
AL
1541 if (mg) {
1542 if (MARK == ORIGMARK) {
1543 MEXTEND(SP, 1);
1544 ++MARK;
1545 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1546 ++SP;
1547 }
3e0cb5de 1548 return Perl_tied_method(aTHX_ SV_CONST(PRINTF), mark - 1, MUTABLE_SV(io),
d682515d
NC
1549 mg,
1550 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1551 sp - mark);
a79db61d 1552 }
46fc3d4c
PP
1553 }
1554
9c9f25b8 1555 if (!io) {
51087808 1556 report_evil_fh(gv);
93189314 1557 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW
1558 goto just_say_no;
1559 }
1560 else if (!(fp = IoOFP(io))) {
7716c5c5
NC
1561 if (IoIFP(io))
1562 report_wrongway_fh(gv, '<');
1563 else if (ckWARN(WARN_CLOSED))
1564 report_evil_fh(gv);
93189314 1565 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
a0d0e21e
LW
1566 goto just_say_no;
1567 }
1568 else {
c7bd8b84 1569 SV *sv = sv_newmortal();
a0d0e21e
LW
1570 do_sprintf(sv, SP - MARK, MARK + 1);
1571 if (!do_print(sv, fp))
1572 goto just_say_no;
1573
1574 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1575 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW
1576 goto just_say_no;
1577 }
a0d0e21e 1578 SP = ORIGMARK;
3280af22 1579 PUSHs(&PL_sv_yes);
a0d0e21e
LW
1580 RETURN;
1581
1582 just_say_no:
a0d0e21e 1583 SP = ORIGMARK;
3280af22 1584 PUSHs(&PL_sv_undef);
a0d0e21e
LW
1585 RETURN;
1586}
1587
c07a80fd
PP
1588PP(pp_sysopen)
1589{
97aff369 1590 dVAR;
39644a26 1591 dSP;
de5e49e1 1592 const int perm = (MAXARG > 3 && (TOPs || POPs)) ? POPi : 0666;
1df70142 1593 const int mode = POPi;
1b6737cc 1594 SV * const sv = POPs;
159b6efe 1595 GV * const gv = MUTABLE_GV(POPs);
1b6737cc 1596 STRLEN len;
c07a80fd 1597
4592e6ca 1598 /* Need TIEHANDLE method ? */
1b6737cc 1599 const char * const tmps = SvPV_const(sv, len);
e62f0680 1600 /* FIXME? do_open should do const */
4608196e 1601 if (do_open(gv, tmps, len, TRUE, mode, perm, NULL)) {
c07a80fd 1602 IoLINES(GvIOp(gv)) = 0;
3280af22 1603 PUSHs(&PL_sv_yes);
c07a80fd
PP
1604 }
1605 else {
3280af22 1606 PUSHs(&PL_sv_undef);
c07a80fd
PP
1607 }
1608 RETURN;
1609}
1610
a0d0e21e
LW
1611PP(pp_sysread)
1612{
27da23d5 1613 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
0b423688 1614 SSize_t offset;
a0d0e21e
LW
1615 IO *io;
1616 char *buffer;
0b423688 1617 STRLEN orig_size;
5b54f415 1618 SSize_t length;
eb5c063a 1619 SSize_t count;
748a9306 1620 SV *bufsv;
a0d0e21e 1621 STRLEN blen;
eb5c063a 1622 int fp_utf8;
1dd30107
NC
1623 int buffer_utf8;
1624 SV *read_target;
eb5c063a
NIS
1625 Size_t got = 0;
1626 Size_t wanted;
1d636c13 1627 bool charstart = FALSE;
87330c3c
JH
1628 STRLEN charskip = 0;
1629 STRLEN skip = 0;
a0d0e21e 1630
159b6efe 1631 GV * const gv = MUTABLE_GV(*++MARK);
5b468f54 1632 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1b6737cc 1633 && gv && (io = GvIO(gv)) )
137443ea 1634 {
a5e1d062 1635 const MAGIC *const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1b6737cc 1636 if (mg) {
3e0cb5de 1637 return Perl_tied_method(aTHX_ SV_CONST(READ), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC
1638 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1639 sp - mark);
1b6737cc 1640 }
2ae324a7
PP
1641 }
1642
a0d0e21e
LW
1643 if (!gv)
1644 goto say_undef;
748a9306 1645 bufsv = *++MARK;
ff68c719 1646 if (! SvOK(bufsv))
76f68e9b 1647 sv_setpvs(bufsv, "");
a0d0e21e 1648 length = SvIVx(*++MARK);
4bac9ae4
CS
1649 if (length < 0)
1650 DIE(aTHX_ "Negative length");
748a9306 1651 SETERRNO(0,0);
a0d0e21e
LW
1652 if (MARK < SP)
1653 offset = SvIVx(*++MARK);
1654 else
1655 offset = 0;
1656 io = GvIO(gv);
b5fe5ca2 1657 if (!io || !IoIFP(io)) {
51087808 1658 report_evil_fh(gv);
b5fe5ca2 1659 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1660 goto say_undef;
b5fe5ca2 1661 }
0064a8a9 1662 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
7d59b7e4 1663 buffer = SvPVutf8_force(bufsv, blen);
1e54db1a 1664 /* UTF-8 may not have been set if they are all low bytes */
eb5c063a 1665 SvUTF8_on(bufsv);
9b9d7ce8 1666 buffer_utf8 = 0;
7d59b7e4
NIS
1667 }
1668 else {
1669 buffer = SvPV_force(bufsv, blen);
1dd30107 1670 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
7d59b7e4 1671 }
4bac9ae4 1672 if (DO_UTF8(bufsv)) {
3f914778 1673 blen = sv_len_utf8_nomg(bufsv);
4bac9ae4 1674 }
7d59b7e4 1675
d0965105
JH
1676 charstart = TRUE;
1677 charskip = 0;
87330c3c 1678 skip = 0;
4bac9ae4 1679 wanted = length;
d0965105 1680
a0d0e21e 1681#ifdef HAS_SOCKET
533c011a 1682 if (PL_op->op_type == OP_RECV) {
0b423688 1683 Sock_size_t bufsize;
46fc3d4c 1684 char namebuf[MAXPATHLEN];
b5afd346 1685#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
490ab354
JH
1686 bufsize = sizeof (struct sockaddr_in);
1687#else
46fc3d4c 1688 bufsize = sizeof namebuf;
490ab354 1689#endif
abf95952
IZ
1690#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1691 if (bufsize >= 256)
1692 bufsize = 255;
1693#endif
eb160463 1694 buffer = SvGROW(bufsv, (STRLEN)(length+1));
bbce6d69 1695 /* 'offset' means 'flags' here */
eb5c063a 1696 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
10edeb5d 1697 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1698 if (count < 0)
a0d0e21e 1699 RETPUSHUNDEF;
8eb023a9
DM
1700 /* MSG_TRUNC can give oversized count; quietly lose it */
1701 if (count > length)
1702 count = length;
eb5c063a 1703 SvCUR_set(bufsv, count);
748a9306
LW
1704 *SvEND(bufsv) = '\0';
1705 (void)SvPOK_only(bufsv);
eb5c063a
NIS
1706 if (fp_utf8)
1707 SvUTF8_on(bufsv);
748a9306 1708 SvSETMAGIC(bufsv);
aac0dd9a 1709 /* This should not be marked tainted if the fp is marked clean */
bbce6d69
PP
1710 if (!(IoFLAGS(io) & IOf_UNTAINT))
1711 SvTAINTED_on(bufsv);
a0d0e21e 1712 SP = ORIGMARK;
46fc3d4c 1713 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW
1714 PUSHs(TARG);
1715 RETURN;
1716 }
a0d0e21e 1717#endif
bbce6d69 1718 if (offset < 0) {
0b423688 1719 if (-offset > (SSize_t)blen)
cea2e8a9 1720 DIE(aTHX_ "Offset outside string");
bbce6d69
PP
1721 offset += blen;
1722 }
eb5c063a
NIS
1723 if (DO_UTF8(bufsv)) {
1724 /* convert offset-as-chars to offset-as-bytes */
d5f981bb 1725 if (offset >= (SSize_t)blen)
6960c29a
CH
1726 offset += SvCUR(bufsv) - blen;
1727 else
1728 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
eb5c063a
NIS
1729 }
1730 more_bytes:
0b423688 1731 orig_size = SvCUR(bufsv);
1dd30107
NC
1732 /* Allocating length + offset + 1 isn't perfect in the case of reading
1733 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1734 unduly.
1735 (should be 2 * length + offset + 1, or possibly something longer if
1736 PL_encoding is true) */
eb160463 1737 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
0b423688
TC
1738 if (offset > 0 && offset > (SSize_t)orig_size) { /* Zero any newly allocated space */
1739 Zero(buffer+orig_size, offset-orig_size, char);
cd52b7b2 1740 }
eb5c063a 1741 buffer = buffer + offset;
1dd30107
NC
1742 if (!buffer_utf8) {
1743 read_target = bufsv;
1744 } else {
1745 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1746 concatenate it to the current buffer. */
1747
1748 /* Truncate the existing buffer to the start of where we will be
1749 reading to: */
1750 SvCUR_set(bufsv, offset);
1751
1752 read_target = sv_newmortal();
862a34c6 1753 SvUPGRADE(read_target, SVt_PV);
fe2774ed 1754 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1dd30107 1755 }
eb5c063a 1756
533c011a 1757 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1758#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1759 if (IoTYPE(io) == IoTYPE_SOCKET) {
eb5c063a
NIS
1760 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1761 buffer, length, 0);
a7092146
GS
1762 }
1763 else
1764#endif
1765 {
eb5c063a
NIS
1766 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1767 buffer, length);
a7092146 1768 }
a0d0e21e
LW
1769 }
1770 else
3b02c43c 1771 {
eb5c063a
NIS
1772 count = PerlIO_read(IoIFP(io), buffer, length);
1773 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1774 if (count == 0 && PerlIO_error(IoIFP(io)))
1775 count = -1;
3b02c43c 1776 }
eb5c063a 1777 if (count < 0) {
7716c5c5 1778 if (IoTYPE(io) == IoTYPE_WRONLY)
a5390457 1779 report_wrongway_fh(gv, '>');
a0d0e21e 1780 goto say_undef;
af8c498a 1781 }
aa07b2f6 1782 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1dd30107
NC
1783 *SvEND(read_target) = '\0';
1784 (void)SvPOK_only(read_target);
0064a8a9 1785 if (fp_utf8 && !IN_BYTES) {
eb5c063a 1786 /* Look at utf8 we got back and count the characters */
1df70142 1787 const char *bend = buffer + count;
eb5c063a 1788 while (buffer < bend) {
d0965105
JH
1789 if (charstart) {
1790 skip = UTF8SKIP(buffer);
1791 charskip = 0;
1792 }
1793 if (buffer - charskip + skip > bend) {
eb5c063a
NIS
1794 /* partial character - try for rest of it */
1795 length = skip - (bend-buffer);
aa07b2f6 1796 offset = bend - SvPVX_const(bufsv);
d0965105
JH
1797 charstart = FALSE;
1798 charskip += count;
eb5c063a
NIS
1799 goto more_bytes;
1800 }
1801 else {
1802 got++;
1803 buffer += skip;
d0965105
JH
1804 charstart = TRUE;
1805 charskip = 0;
eb5c063a
NIS
1806 }
1807 }
1808 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1809 provided amount read (count) was what was requested (length)
1810 */
1811 if (got < wanted && count == length) {
d0965105 1812 length = wanted - got;
aa07b2f6 1813 offset = bend - SvPVX_const(bufsv);
eb5c063a
NIS
1814 goto more_bytes;
1815 }
1816 /* return value is character count */
1817 count = got;
1818 SvUTF8_on(bufsv);
1819 }
1dd30107
NC
1820 else if (buffer_utf8) {
1821 /* Let svcatsv upgrade the bytes we read in to utf8.
1822 The buffer is a mortal so will be freed soon. */
1823 sv_catsv_nomg(bufsv, read_target);
1824 }
748a9306 1825 SvSETMAGIC(bufsv);
aac0dd9a 1826 /* This should not be marked tainted if the fp is marked clean */
bbce6d69
PP
1827 if (!(IoFLAGS(io) & IOf_UNTAINT))
1828 SvTAINTED_on(bufsv);
a0d0e21e 1829 SP = ORIGMARK;
eb5c063a 1830 PUSHi(count);
a0d0e21e
LW
1831 RETURN;
1832
1833 say_undef:
1834 SP = ORIGMARK;
1835 RETPUSHUNDEF;
1836}
1837
60504e18 1838PP(pp_syswrite)
a0d0e21e 1839{
27da23d5 1840 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
748a9306 1841 SV *bufsv;
83003860 1842 const char *buffer;
8c99d73e 1843 SSize_t retval;
a0d0e21e 1844 STRLEN blen;
c9cb0f41 1845 STRLEN orig_blen_bytes;
64a1bc8e 1846 const int op_type = PL_op->op_type;
c9cb0f41
NC
1847 bool doing_utf8;
1848 U8 *tmpbuf = NULL;
159b6efe 1849 GV *const gv = MUTABLE_GV(*++MARK);
91472ad4
NC
1850 IO *const io = GvIO(gv);
1851
1852 if (op_type == OP_SYSWRITE && io) {
a5e1d062 1853 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1854 if (mg) {
a79db61d 1855 if (MARK == SP - 1) {
c8834ab7
TC
1856 SV *sv = *SP;
1857 mXPUSHi(sv_len(sv));
a79db61d
AL
1858 PUTBACK;
1859 }
1860
3e0cb5de 1861 return Perl_tied_method(aTHX_ SV_CONST(WRITE), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC
1862 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1863 sp - mark);
64a1bc8e 1864 }
1d603a67 1865 }
a0d0e21e
LW
1866 if (!gv)
1867 goto say_undef;
64a1bc8e 1868
748a9306 1869 bufsv = *++MARK;
64a1bc8e 1870
748a9306 1871 SETERRNO(0,0);
cf167416 1872 if (!io || !IoIFP(io) || IoTYPE(io) == IoTYPE_RDONLY) {
8c99d73e 1873 retval = -1;
51087808
NC
1874 if (io && IoIFP(io))
1875 report_wrongway_fh(gv, '<');
1876 else
1877 report_evil_fh(gv);
b5fe5ca2 1878 SETERRNO(EBADF,RMS_IFI);
7d59b7e4
NIS
1879 goto say_undef;
1880 }
1881
c9cb0f41
NC
1882 /* Do this first to trigger any overloading. */
1883 buffer = SvPV_const(bufsv, blen);
1884 orig_blen_bytes = blen;
1885 doing_utf8 = DO_UTF8(bufsv);
1886
7d59b7e4 1887 if (PerlIO_isutf8(IoIFP(io))) {
6aa2f6a7 1888 if (!SvUTF8(bufsv)) {
c9cb0f41
NC
1889 /* We don't modify the original scalar. */
1890 tmpbuf = bytes_to_utf8((const U8*) buffer, &blen);
1891 buffer = (char *) tmpbuf;
1892 doing_utf8 = TRUE;
1893 }
a0d0e21e 1894 }
c9cb0f41
NC
1895 else if (doing_utf8) {
1896 STRLEN tmplen = blen;
a79db61d 1897 U8 * const result = bytes_from_utf8((const U8*) buffer, &tmplen, &doing_utf8);
c9cb0f41
NC
1898 if (!doing_utf8) {
1899 tmpbuf = result;
1900 buffer = (char *) tmpbuf;
1901 blen = tmplen;
1902 }
1903 else {
1904 assert((char *)result == buffer);
1905 Perl_croak(aTHX_ "Wide character in %s", OP_DESC(PL_op));
1906 }
7d59b7e4
NIS
1907 }
1908
e2712234 1909#ifdef HAS_SOCKET
7627e6d0 1910 if (op_type == OP_SEND) {
e2712234
NC
1911 const int flags = SvIVx(*++MARK);
1912 if (SP > MARK) {
1913 STRLEN mlen;
1914 char * const sockbuf = SvPVx(*++MARK, mlen);
1915 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1916 flags, (struct sockaddr *)sockbuf, mlen);
1917 }
1918 else {
1919 retval
1920 = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, flags);
1921 }
7627e6d0
NC
1922 }
1923 else
e2712234 1924#endif
7627e6d0 1925 {
c9cb0f41
NC
1926 Size_t length = 0; /* This length is in characters. */
1927 STRLEN blen_chars;
7d59b7e4 1928 IV offset;
c9cb0f41
NC
1929
1930 if (doing_utf8) {
1931 if (tmpbuf) {
1932 /* The SV is bytes, and we've had to upgrade it. */
1933 blen_chars = orig_blen_bytes;
1934 } else {
1935 /* The SV really is UTF-8. */
3f914778
FC
1936 /* Don't call sv_len_utf8 on a magical or overloaded
1937 scalar, as we might get back a different result. */
1938 blen_chars = sv_or_pv_len_utf8(bufsv, buffer, blen);
c9cb0f41
NC
1939 }
1940 } else {
1941 blen_chars = blen;
1942 }
1943
1944 if (MARK >= SP) {
1945 length = blen_chars;
1946 } else {
1947#if Size_t_size > IVSIZE
1948 length = (Size_t)SvNVx(*++MARK);
1949#else
1950 length = (Size_t)SvIVx(*++MARK);
1951#endif
4b0c4b6f
NC
1952 if ((SSize_t)length < 0) {
1953 Safefree(tmpbuf);
c9cb0f41 1954 DIE(aTHX_ "Negative length");
4b0c4b6f 1955 }
7d59b7e4 1956 }
c9cb0f41 1957
bbce6d69 1958 if (MARK < SP) {
a0d0e21e 1959 offset = SvIVx(*++MARK);
bbce6d69 1960 if (offset < 0) {
4b0c4b6f
NC
1961 if (-offset > (IV)blen_chars) {
1962 Safefree(tmpbuf);
cea2e8a9 1963 DIE(aTHX_ "Offset outside string");
4b0c4b6f 1964 }
c9cb0f41 1965 offset += blen_chars;
3c946528 1966 } else if (offset > (IV)blen_chars) {
4b0c4b6f 1967 Safefree(tmpbuf);
cea2e8a9 1968 DIE(aTHX_ "Offset outside string");
4b0c4b6f 1969 }
bbce6d69 1970 } else
a0d0e21e 1971 offset = 0;
c9cb0f41
NC
1972 if (length > blen_chars - offset)
1973 length = blen_chars - offset;
1974 if (doing_utf8) {
1975 /* Here we convert length from characters to bytes. */
1976 if (tmpbuf || SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
1977 /* Either we had to convert the SV, or the SV is magical, or
1978 the SV has overloading, in which case we can't or mustn't
1979 or mustn't call it again. */
1980
1981 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
1982 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1983 } else {
1984 /* It's a real UTF-8 SV, and it's not going to change under
1985 us. Take advantage of any cache. */
1986 I32 start = offset;
1987 I32 len_I32 = length;
1988
1989 /* Convert the start and end character positions to bytes.
1990 Remember that the second argument to sv_pos_u2b is relative
1991 to the first. */
1992 sv_pos_u2b(bufsv, &start, &len_I32);
1993
1994 buffer += start;
1995 length = len_I32;
1996 }
7d59b7e4
NIS
1997 }
1998 else {
1999 buffer = buffer+offset;
2000 }
a7092146 2001#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 2002 if (IoTYPE(io) == IoTYPE_SOCKET) {
8c99d73e 2003 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
7d59b7e4 2004 buffer, length, 0);
a7092146
GS
2005 }
2006 else
2007#endif
2008 {
94e4c244 2009 /* See the note at doio.c:do_print about filesize limits. --jhi */
8c99d73e 2010 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
7d59b7e4 2011 buffer, length);
a7092146 2012 }
a0d0e21e 2013 }
c9cb0f41 2014
8c99d73e 2015 if (retval < 0)
a0d0e21e
LW
2016 goto say_undef;
2017 SP = ORIGMARK;
c9cb0f41 2018 if (doing_utf8)
f36eea10 2019 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
4b0c4b6f 2020
a79db61d 2021 Safefree(tmpbuf);
8c99d73e
GS
2022#if Size_t_size > IVSIZE
2023 PUSHn(retval);
2024#else
2025 PUSHi(retval);
2026#endif
a0d0e21e
LW
2027 RETURN;
2028
2029 say_undef:
a79db61d 2030 Safefree(tmpbuf);
a0d0e21e
LW
2031 SP = ORIGMARK;
2032 RETPUSHUNDEF;
2033}
2034
a0d0e21e
LW
2035PP(pp_eof)
2036{
27da23d5 2037 dVAR; dSP;
a0d0e21e 2038 GV *gv;
32e65323 2039 IO *io;
a5e1d062 2040 const MAGIC *mg;
bc0c81ca
NC
2041 /*
2042 * in Perl 5.12 and later, the additional parameter is a bitmask:
2043 * 0 = eof
2044 * 1 = eof(FH)
2045 * 2 = eof() <- ARGV magic
2046 *
2047 * I'll rely on the compiler's trace flow analysis to decide whether to
2048 * actually assign this out here, or punt it into the only block where it is
2049 * used. Doing it out here is DRY on the condition logic.
2050 */
2051 unsigned int which;
a0d0e21e 2052
bc0c81ca 2053 if (MAXARG) {
32e65323 2054 gv = PL_last_in_gv = MUTABLE_GV(POPs); /* eof(FH) */
bc0c81ca
NC
2055 which = 1;
2056 }
b5f55170
NC
2057 else {
2058 EXTEND(SP, 1);
2059
bc0c81ca 2060 if (PL_op->op_flags & OPf_SPECIAL) {
b5f55170 2061 gv = PL_last_in_gv = GvEGVx(PL_argvgv); /* eof() - ARGV magic */
bc0c81ca
NC
2062 which = 2;
2063 }
2064 else {
b5f55170 2065 gv = PL_last_in_gv; /* eof */
bc0c81ca
NC
2066 which = 0;
2067 }
b5f55170 2068 }
32e65323
CS
2069
2070 if (!gv)
2071 RETPUSHNO;
2072
2073 if ((io = GvIO(gv)) && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) {
3e0cb5de 2074 return tied_method1(SV_CONST(EOF), SP, MUTABLE_SV(io), mg, newSVuv(which));
146174a9 2075 }
4592e6ca 2076
32e65323
CS
2077 if (!MAXARG && (PL_op->op_flags & OPf_SPECIAL)) { /* eof() */
2078 if (io && !IoIFP(io)) {
2079 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
2080 IoLINES(io) = 0;
2081 IoFLAGS(io) &= ~IOf_START;
2082 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, NULL);
2083 if (GvSV(gv))
2084 sv_setpvs(GvSV(gv), "-");
2085 else
2086 GvSV(gv) = newSVpvs("-");
2087 SvSETMAGIC(GvSV(gv));
2088 }
2089 else if (!nextargv(gv))
2090 RETPUSHYES;
6136c704 2091 }
4592e6ca
NIS
2092 }
2093
32e65323 2094 PUSHs(boolSV(do_eof(gv)));
a0d0e21e
LW
2095 RETURN;
2096}
2097
2098PP(pp_tell)
2099{
27da23d5 2100 dVAR; dSP; dTARGET;
301e8125 2101 GV *gv;
5b468f54 2102 IO *io;
a0d0e21e 2103
b64a1294 2104 if (MAXARG != 0 && (TOPs || POPs))
159b6efe 2105 PL_last_in_gv = MUTABLE_GV(POPs);
ac3697cd
NC
2106 else
2107 EXTEND(SP, 1);
c4420975 2108 gv = PL_last_in_gv;
4592e6ca 2109
9c9f25b8
NC
2110 io = GvIO(gv);
2111 if (io) {
a5e1d062 2112 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2113 if (mg) {
3e0cb5de 2114 return tied_method0(SV_CONST(TELL), SP, MUTABLE_SV(io), mg);
a79db61d 2115 }
4592e6ca 2116 }
f4817f32 2117 else if (!gv) {
f03173f2
RGS
2118 if (!errno)
2119 SETERRNO(EBADF,RMS_IFI);
2120 PUSHi(-1);
2121 RETURN;
2122 }
4592e6ca 2123
146174a9
CB
2124#if LSEEKSIZE > IVSIZE
2125 PUSHn( do_tell(gv) );
2126#else
a0d0e21e 2127 PUSHi( do_tell(gv) );
146174a9 2128#endif
a0d0e21e
LW
2129 RETURN;
2130}
2131
137443ea
PP
2132PP(pp_sysseek)
2133{
27da23d5 2134 dVAR; dSP;
1df70142 2135 const int whence = POPi;
146174a9 2136#if LSEEKSIZE > IVSIZE
7452cf6a 2137 const Off_t offset = (Off_t)SvNVx(POPs);
146174a9 2138#else
7452cf6a 2139 const Off_t offset = (Off_t)SvIVx(POPs);
146174a9 2140#endif
a0d0e21e 2141
159b6efe 2142 GV * const gv = PL_last_in_gv = MUTABLE_GV(POPs);
9c9f25b8 2143 IO *const io = GvIO(gv);
4592e6ca 2144
9c9f25b8 2145 if (io) {
a5e1d062 2146 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2147 if (mg) {
cb50131a 2148#if LSEEKSIZE > IVSIZE
74f0b550 2149 SV *const offset_sv = newSVnv((NV) offset);
cb50131a 2150#else
74f0b550 2151 SV *const offset_sv = newSViv(offset);
cb50131a 2152#endif
bc0c81ca 2153
3e0cb5de 2154 return tied_method2(SV_CONST(SEEK), SP, MUTABLE_SV(io), mg, offset_sv,
d682515d 2155 newSViv(whence));
a79db61d 2156 }
4592e6ca
NIS
2157 }
2158
533c011a 2159 if (PL_op->op_type == OP_SEEK)
8903cb82
PP
2160 PUSHs(boolSV(do_seek(gv, offset, whence)));
2161 else {
0bcc34c2 2162 const Off_t sought = do_sysseek(gv, offset, whence);
b448e4fe 2163 if (sought < 0)
146174a9
CB
2164 PUSHs(&PL_sv_undef);
2165 else {
7452cf6a 2166 SV* const sv = sought ?
146174a9 2167#if LSEEKSIZE > IVSIZE
b448e4fe 2168 newSVnv((NV)sought)
146174a9 2169#else
b448e4fe 2170 newSViv(sought)
146174a9
CB
2171#endif
2172 : newSVpvn(zero_but_true, ZBTLEN);
6e449a3a 2173 mPUSHs(sv);
146174a9 2174 }
8903cb82 2175 }
a0d0e21e
LW
2176 RETURN;
2177}
2178
2179PP(pp_truncate)
2180{
97aff369 2181 dVAR;
39644a26 2182 dSP;
8c99d73e
GS
2183 /* There seems to be no consensus on the length type of truncate()
2184 * and ftruncate(), both off_t and size_t have supporters. In
2185 * general one would think that when using large files, off_t is
2186 * at least as wide as size_t, so using an off_t should be okay. */
2187 /* XXX Configure probe for the length type of *truncate() needed XXX */
0bcc34c2 2188 Off_t len;
a0d0e21e 2189
25342a55 2190#if Off_t_size > IVSIZE
0bcc34c2 2191 len = (Off_t)POPn;
8c99d73e 2192#else
0bcc34c2 2193 len = (Off_t)POPi;
8c99d73e
GS
2194#endif
2195 /* Checking for length < 0 is problematic as the type might or
301e8125 2196 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 2197 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2198 SETERRNO(0,0);
d05c1ba0 2199 {
5e0adc2d 2200 SV * const sv = POPs;
d05c1ba0
JH
2201 int result = 1;
2202 GV *tmpgv;
090bf15b
SR
2203 IO *io;
2204
42409c40
FC
2205 if (PL_op->op_flags & OPf_SPECIAL
2206 ? (tmpgv = gv_fetchsv(sv, 0, SVt_PVIO), 1)
2207 : !!(tmpgv = MAYBE_DEREF_GV(sv)) ) {
9c9f25b8
NC
2208 io = GvIO(tmpgv);
2209 if (!io)
090bf15b 2210 result = 0;
d05c1ba0 2211 else {
090bf15b 2212 PerlIO *fp;
090bf15b
SR
2213 do_ftruncate_io:
2214 TAINT_PROPER("truncate");
2215 if (!(fp = IoIFP(io))) {
2216 result = 0;
2217 }
2218 else {
2219 PerlIO_flush(fp);
cbdc8872 2220#ifdef HAS_TRUNCATE
090bf15b 2221 if (ftruncate(PerlIO_fileno(fp), len) < 0)
301e8125 2222#else
090bf15b 2223 if (my_chsize(PerlIO_fileno(fp), len) < 0)
cbdc8872 2224#endif
090bf15b
SR
2225 result = 0;
2226 }
d05c1ba0 2227 }
cbdc8872 2228 }
5e0adc2d 2229 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2230 io = MUTABLE_IO(SvRV(sv)); /* *main::FRED{IO} for example */
090bf15b 2231 goto do_ftruncate_io;
5e0adc2d
FC
2232 }
2233 else {
2234 const char * const name = SvPV_nomg_const_nolen(sv);
d05c1ba0 2235 TAINT_PROPER("truncate");
cbdc8872 2236#ifdef HAS_TRUNCATE
d05c1ba0
JH
2237 if (truncate(name, len) < 0)
2238 result = 0;
cbdc8872 2239#else
d05c1ba0 2240 {
7452cf6a 2241 const int tmpfd = PerlLIO_open(name, O_RDWR);
d05c1ba0 2242
7452cf6a 2243 if (tmpfd < 0)
cbdc8872 2244 result = 0;
d05c1ba0
JH
2245 else {
2246 if (my_chsize(tmpfd, len) < 0)
2247 result = 0;
2248 PerlLIO_close(tmpfd);
2249 }
cbdc8872 2250 }
a0d0e21e 2251#endif
d05c1ba0 2252 }
a0d0e21e 2253
d05c1ba0
JH
2254 if (result)
2255 RETPUSHYES;
2256 if (!errno)
93189314 2257 SETERRNO(EBADF,RMS_IFI);
d05c1ba0
JH
2258 RETPUSHUNDEF;
2259 }
a0d0e21e
LW
2260}
2261
a0d0e21e
LW
2262PP(pp_ioctl)
2263{
97aff369 2264 dVAR; dSP; dTARGET;
7452cf6a 2265 SV * const argsv = POPs;
1df70142 2266 const unsigned int func = POPu;
49225470 2267 int optype;
159b6efe 2268 GV * const gv = MUTABLE_GV(POPs);
8a6c0fcb 2269 IO * const io = GvIOn(gv);
a0d0e21e 2270 char *s;
324aa91a 2271 IV retval;
a0d0e21e 2272
8a6c0fcb 2273 if (!IoIFP(io)) {
51087808 2274 report_evil_fh(gv);
93189314 2275 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
a0d0e21e
LW
2276 RETPUSHUNDEF;
2277 }
2278
748a9306 2279 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2280 STRLEN len;
324aa91a 2281 STRLEN need;
748a9306 2282 s = SvPV_force(argsv, len);
324aa91a
HF
2283 need = IOCPARM_LEN(func);
2284 if (len < need) {
2285 s = Sv_Grow(argsv, need + 1);
2286 SvCUR_set(argsv, need);
a0d0e21e
LW
2287 }
2288
748a9306 2289 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW
2290 }
2291 else {
748a9306 2292 retval = SvIV(argsv);
c529f79d 2293 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW
2294 }
2295
49225470 2296 optype = PL_op->op_type;
ed4b2e6b 2297 TAINT_PROPER(PL_op_desc[optype]);
a0d0e21e
LW
2298
2299 if (optype == OP_IOCTL)
2300#ifdef HAS_IOCTL
76e3520e 2301 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2302#else
cea2e8a9 2303 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW
2304#endif
2305 else
c214f4ad
B
2306#ifndef HAS_FCNTL
2307 DIE(aTHX_ "fcntl is not implemented");
2308#else
55497cff 2309#if defined(OS2) && defined(__EMX__)
760ac839 2310 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2311#else
760ac839 2312 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2313#endif
6652bd42 2314#endif
a0d0e21e 2315
6652bd42 2316#if defined(HAS_IOCTL) || defined(HAS_FCNTL)
748a9306
LW
2317 if (SvPOK(argsv)) {
2318 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2319 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
53e06cf0 2320 OP_NAME(PL_op));
748a9306
LW
2321 s[SvCUR(argsv)] = 0; /* put our null back */
2322 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW
2323 }
2324
2325 if (retval == -1)
2326 RETPUSHUNDEF;
2327 if (retval != 0) {
2328 PUSHi(retval);
2329 }
2330 else {
8903cb82 2331 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e 2332 }
4808266b 2333#endif
c214f4ad 2334 RETURN;
a0d0e21e
LW
2335}
2336
2337PP(pp_flock)
2338{
9cad6237 2339#ifdef FLOCK
97aff369 2340 dVAR; dSP; dTARGET;
a0d0e21e 2341 I32 value;
7452cf6a 2342 const int argtype = POPi;
1f28cbca 2343 GV * const gv = MUTABLE_GV(POPs);
9c9f25b8
NC
2344 IO *const io = GvIO(gv);
2345 PerlIO *const fp = io ? IoIFP(io) : NULL;
16d20bd9 2346
0bcc34c2 2347 /* XXX Looks to me like io is always NULL at this point */
a0d0e21e 2348 if (fp) {
68dc0745 2349 (void)PerlIO_flush(fp);
76e3520e 2350 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2351 }
cb50131a 2352 else {
51087808 2353 report_evil_fh(gv);
a0d0e21e 2354 value = 0;
93189314 2355 SETERRNO(EBADF,RMS_IFI);
cb50131a 2356 }
a0d0e21e
LW
2357 PUSHi(value);
2358 RETURN;
2359#else
cea2e8a9 2360 DIE(aTHX_ PL_no_func, "flock()");
a0d0e21e
LW
2361#endif
2362}
2363
2364/* Sockets. */
2365
7627e6d0
NC
2366#ifdef HAS_SOCKET
2367
a0d0e21e
LW
2368PP(pp_socket)
2369{
97aff369 2370 dVAR; dSP;
7452cf6a
AL
2371 const int protocol = POPi;
2372 const int type = POPi;
2373 const int domain = POPi;
159b6efe 2374 GV * const gv = MUTABLE_GV(POPs);
5805b585 2375 IO * const io = GvIOn(gv);
a0d0e21e
LW
2376 int fd;
2377
57171420
BS
2378 if (IoIFP(io))
2379 do_close(gv, FALSE);
2380
a0d0e21e 2381 TAINT_PROPER("socket");
6ad3d225 2382 fd = PerlSock_socket(domain, type, protocol);
a0d0e21e
LW
2383 if (fd < 0)
2384 RETPUSHUNDEF;
460c8493
IZ
2385 IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2386 IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2387 IoTYPE(io) = IoTYPE_SOCKET;
a0d0e21e 2388 if (!IoIFP(io) || !IoOFP(io)) {
760ac839
LW
2389 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2390 if (IoOFP(io)) PerlIO_close(IoOFP(io));
6ad3d225 2391 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
a0d0e21e
LW
2392 RETPUSHUNDEF;
2393 }
8d2a6795
GS
2394#if defined(HAS_FCNTL) && defined(F_SETFD)
2395 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2396#endif
a0d0e21e
LW
2397
2398 RETPUSHYES;
a0d0e21e 2399}
7627e6d0 2400#endif
a0d0e21e
LW
2401
2402PP(pp_sockpair)
2403{
c95c94b1 2404#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
97aff369 2405 dVAR; dSP;
e0b7b5e2 2406 int fd[2];
7452cf6a
AL
2407 const int protocol = POPi;
2408 const int type = POPi;
2409 const int domain = POPi;
e0b7b5e2 2410
159b6efe 2411 GV * const gv2 = MUTABLE_GV(POPs);
49561e08
FC
2412 IO * const io2 = GvIOn(gv2);
2413 GV * const gv1 = MUTABLE_GV(POPs);
2414 IO * const io1 = GvIOn(gv1);
a0d0e21e 2415
49561e08 2416 if (IoIFP(io1))
dc0d0a5f 2417 do_close(gv1, FALSE);
49561e08 2418 if (IoIFP(io2))
dc0d0a5f 2419 do_close(gv2, FALSE);
57171420 2420
a0d0e21e 2421 TAINT_PROPER("socketpair");
6ad3d225 2422 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
a0d0e21e 2423 RETPUSHUNDEF;
460c8493
IZ
2424 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2425 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
50952442 2426 IoTYPE(io1) = IoTYPE_SOCKET;
460c8493
IZ
2427 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2428 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
50952442 2429 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2430 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW
2431 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2432 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2433 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW
2434 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2435 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2436 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW
2437 RETPUSHUNDEF;
2438 }
8d2a6795
GS
2439#if defined(HAS_FCNTL) && defined(F_SETFD)
2440 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2441 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2442#endif
a0d0e21e
LW
2443
2444 RETPUSHYES;
2445#else
cea2e8a9 2446 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW
2447#endif
2448}
2449
7627e6d0
NC
2450#ifdef HAS_SOCKET
2451
a0d0e21e
LW
2452PP(pp_bind)
2453{
97aff369 2454 dVAR; dSP;
7452cf6a 2455 SV * const addrsv = POPs;
349d4f2f
NC
2456 /* OK, so on what platform does bind modify addr? */
2457 const char *addr;
159b6efe 2458 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2459 IO * const io = GvIOn(gv);
a0d0e21e 2460 STRLEN len;
e0b7b5e2 2461 int op_type;
a0d0e21e 2462
8a6c0fcb 2463 if (!IoIFP(io))
a0d0e21e
LW
2464 goto nuts;
2465
349d4f2f 2466 addr = SvPV_const(addrsv, len);
e0b7b5e2 2467 op_type = PL_op->op_type;
32b81f04
NC
2468 TAINT_PROPER(PL_op_desc[op_type]);
2469 if ((op_type == OP_BIND
2470 ? PerlSock_bind(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len)
2471 : PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len))
2472 >= 0)
a0d0e21e
LW
2473 RETPUSHYES;
2474 else
2475 RETPUSHUNDEF;
2476
2477nuts:
fbcda526 2478 report_evil_fh(gv);
93189314 2479 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2480 RETPUSHUNDEF;
a0d0e21e
LW
2481}
2482
2483PP(pp_listen)
2484{
97aff369 2485 dVAR; dSP;
7452cf6a 2486 const int backlog = POPi;
159b6efe 2487 GV * const gv = MUTABLE_GV(POPs);
8a6c0fcb 2488 IO * const io = GvIOn(gv);
a0d0e21e 2489
8a6c0fcb 2490 if (!IoIFP(io))
a0d0e21e
LW
2491 goto nuts;
2492
6ad3d225 2493 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW
2494 RETPUSHYES;
2495 else
2496 RETPUSHUNDEF;
2497
2498nuts:
fbcda526 2499 report_evil_fh(gv);
93189314 2500 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2501 RETPUSHUNDEF;
a0d0e21e
LW
2502}
2503
2504PP(pp_accept)
2505{
97aff369 2506 dVAR; dSP; dTARGET;
eb578fdb 2507 IO *nstio;
93d47a36 2508 char namebuf[MAXPATHLEN];
b5afd346 2509#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
93d47a36
JH
2510 Sock_size_t len = sizeof (struct sockaddr_in);
2511#else
2512 Sock_size_t len = sizeof namebuf;
2513#endif
159b6efe
NC
2514 GV * const ggv = MUTABLE_GV(POPs);
2515 GV * const ngv = MUTABLE_GV(POPs);
a0d0e21e
LW
2516 int fd;
2517
8a6c0fcb 2518 IO * const gstio = GvIO(ggv);
a0d0e21e
LW
2519 if (!gstio || !IoIFP(gstio))
2520 goto nuts;
2521
2522 nstio = GvIOn(ngv);
93d47a36 2523 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
e294cc5d
JH
2524#if defined(OEMVS)
2525 if (len == 0) {
2526 /* Some platforms indicate zero length when an AF_UNIX client is
2527 * not bound. Simulate a non-zero-length sockaddr structure in
2528 * this case. */
2529 namebuf[0] = 0; /* sun_len */
2530 namebuf[1] = AF_UNIX; /* sun_family */
2531 len = 2;
2532 }
2533#endif
2534
a0d0e21e
LW
2535 if (fd < 0)
2536 goto badexit;
a70048fb
AB
2537 if (IoIFP(nstio))
2538 do_close(ngv, FALSE);
460c8493
IZ
2539 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2540 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2541 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2542 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW
2543 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2544 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2545 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW
2546 goto badexit;
2547 }
8d2a6795
GS
2548#if defined(HAS_FCNTL) && defined(F_SETFD)
2549 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2550#endif
a0d0e21e 2551
381c1bae 2552#ifdef __SCO_VERSION__
93d47a36 2553 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
381c1bae 2554#endif
ed79a026 2555
93d47a36 2556 PUSHp(namebuf, len);
a0d0e21e
LW
2557 RETURN;
2558
2559nuts:
fbcda526 2560 report_evil_fh(ggv);
93189314 2561 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW
2562
2563badexit:
2564 RETPUSHUNDEF;
2565
a0d0e21e
LW
2566}
2567
2568PP(pp_shutdown)
2569{
97aff369 2570 dVAR; dSP; dTARGET;
7452cf6a 2571 const int how = POPi;
159b6efe 2572 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2573 IO * const io = GvIOn(gv);
a0d0e21e 2574
8a6c0fcb 2575 if (!IoIFP(io))
a0d0e21e
LW
2576 goto nuts;
2577
6ad3d225 2578 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW
2579 RETURN;
2580
2581nuts:
fbcda526 2582 report_evil_fh(gv);
93189314 2583 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2584 RETPUSHUNDEF;
a0d0e21e
LW
2585}
2586
a0d0e21e
LW
2587PP(pp_ssockopt)
2588{
97aff369 2589 dVAR; dSP;
7452cf6a 2590 const int optype = PL_op->op_type;
561b68a9 2591 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
7452cf6a
AL
2592 const unsigned int optname = (unsigned int) POPi;
2593 const unsigned int lvl = (unsigned int) POPi;
159b6efe 2594 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2595 IO * const io = GvIOn(gv);
a0d0e21e 2596 int fd;
1e422769 2597 Sock_size_t len;
a0d0e21e 2598
49225470 2599 if (!IoIFP(io))
a0d0e21e
LW
2600 goto nuts;
2601
760ac839 2602 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW
2603 switch (optype) {
2604 case OP_GSOCKOPT:
748a9306 2605 SvGROW(sv, 257);
a0d0e21e 2606 (void)SvPOK_only(sv);
748a9306
LW
2607 SvCUR_set(sv,256);
2608 *SvEND(sv) ='\0';
1e422769 2609 len = SvCUR(sv);
6ad3d225 2610 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2611 goto nuts2;
1e422769 2612 SvCUR_set(sv, len);
748a9306 2613 *SvEND(sv) ='\0';
a0d0e21e
LW
2614 PUSHs(sv);
2615 break;
2616 case OP_SSOCKOPT: {
1215b447
JH
2617#if defined(__SYMBIAN32__)
2618# define SETSOCKOPT_OPTION_VALUE_T void *
2619#else
2620# define SETSOCKOPT_OPTION_VALUE_T const char *
2621#endif
2622 /* XXX TODO: We need to have a proper type (a Configure probe,
2623 * etc.) for what the C headers think of the third argument of
2624 * setsockopt(), the option_value read-only buffer: is it
2625 * a "char *", or a "void *", const or not. Some compilers
2626 * don't take kindly to e.g. assuming that "char *" implicitly
2627 * promotes to a "void *", or to explicitly promoting/demoting
2628 * consts to non/vice versa. The "const void *" is the SUS
2629 * definition, but that does not fly everywhere for the above
2630 * reasons. */
2631 SETSOCKOPT_OPTION_VALUE_T buf;
1e422769
PP
2632 int aint;
2633 if (SvPOKp(sv)) {
2d8e6c8d 2634 STRLEN l;
1215b447 2635 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2d8e6c8d 2636 len = l;
1e422769 2637 }
56ee1660 2638 else {
a0d0e21e 2639 aint = (int)SvIV(sv);
1215b447 2640 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
a0d0e21e
LW
2641 len = sizeof(int);
2642 }
6ad3d225 2643 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2644 goto nuts2;
3280af22 2645 PUSHs(&PL_sv_yes);
a0d0e21e
LW
2646 }
2647 break;
2648 }
2649 RETURN;
2650
2651nuts:
fbcda526 2652 report_evil_fh(gv);
93189314 2653 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW
2654nuts2:
2655 RETPUSHUNDEF;
2656
a0d0e21e
LW
2657}
2658
a0d0e21e
LW
2659PP(pp_getpeername)
2660{
97aff369 2661 dVAR; dSP;
7452cf6a 2662 const int optype = PL_op->op_type;
159b6efe 2663 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2664 IO * const io = GvIOn(gv);
7452cf6a 2665 Sock_size_t len;
a0d0e21e
LW
2666 SV *sv;
2667 int fd;
a0d0e21e 2668
49225470 2669 if (!IoIFP(io))
a0d0e21e
LW
2670 goto nuts;
2671
561b68a9 2672 sv = sv_2mortal(newSV(257));
748a9306 2673 (void)SvPOK_only(sv);
1e422769
PP
2674 len = 256;
2675 SvCUR_set(sv, len);
748a9306 2676 *SvEND(sv) ='\0';
760ac839 2677 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW
2678 switch (optype) {
2679 case OP_GETSOCKNAME:
6ad3d225 2680 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW
2681 goto nuts2;
2682 break;
2683 case OP_GETPEERNAME:
6ad3d225 2684 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2685 goto nuts2;
490ab354
JH
2686#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2687 {
2688 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";
2689 /* If the call succeeded, make sure we don't have a zeroed port/addr */
349d4f2f 2690 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2fbb330f 2691 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
490ab354 2692 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2693 goto nuts2;
490ab354
JH
2694 }
2695 }
2696#endif
a0d0e21e
LW
2697 break;
2698 }
13826f2c
CS
2699#ifdef BOGUS_GETNAME_RETURN
2700 /* Interactive Unix, getpeername() and getsockname()
2701 does not return valid namelen */
1e422769
PP
2702 if (len == BOGUS_GETNAME_RETURN)
2703 len = sizeof(struct sockaddr);
13826f2c 2704#endif
1e422769 2705 SvCUR_set(sv, len);
748a9306 2706 *SvEND(sv) ='\0';
a0d0e21e
LW
2707 PUSHs(sv);
2708 RETURN;
2709
2710nuts:
fbcda526 2711 report_evil_fh(gv);
93189314 2712 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW
2713nuts2:
2714 RETPUSHUNDEF;
7627e6d0 2715}
a0d0e21e 2716
a0d0e21e 2717#endif
a0d0e21e
LW
2718
2719/* Stat calls. */
2720
a0d0e21e
LW
2721PP(pp_stat)
2722{
97aff369 2723 dVAR;
39644a26 2724 dSP;
10edeb5d 2725 GV *gv = NULL;
55dd8d50 2726 IO *io = NULL;
54310121 2727 I32 gimme;
a0d0e21e 2728 I32 max = 13;
109c43ed 2729 SV* sv;
a0d0e21e 2730
109c43ed
FC
2731 if (PL_op->op_flags & OPf_REF ? (gv = cGVOP_gv, 1)
2732 : !!(sv=POPs, gv = MAYBE_DEREF_GV(sv))) {
8a4e5b40 2733 if (PL_op->op_type == OP_LSTAT) {
5d3e98de 2734 if (gv != PL_defgv) {
5d329e6e 2735 do_fstat_warning_check:
a2a5de95 2736 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
93fad930
FC
2737 "lstat() on filehandle%s%"SVf,
2738 gv ? " " : "",
2739 SVfARG(gv
bf29d05f
BF
2740 ? sv_2mortal(newSVhek(GvENAME_HEK(gv)))
2741 : &PL_sv_no));
5d3e98de 2742 } else if (PL_laststype != OP_LSTAT)
b042df57 2743 /* diag_listed_as: The stat preceding %s wasn't an lstat */
8a4e5b40 2744 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
8a4e5b40
DD
2745 }
2746
2dd78f96 2747 if (gv != PL_defgv) {
b8413ac3 2748 bool havefp;
0d5064f1 2749 do_fstat_have_io:
b8413ac3 2750 havefp = FALSE;
3280af22 2751 PL_laststype = OP_STAT;
0d5064f1 2752 PL_statgv = gv ? gv : (GV *)io;
76f68e9b 2753 sv_setpvs(PL_statname, "");
5228a96c 2754 if(gv) {
ad02613c 2755 io = GvIO(gv);
0d5064f1
FC
2756 }
2757 if (io) {
5228a96c
SP
2758 if (IoIFP(io)) {
2759 PL_laststatval =
2760 PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
8080e3c8 2761 havefp = TRUE;
5228a96c 2762 } else if (IoDIRP(io)) {
5228a96c 2763 PL_laststatval =
3497a01f 2764 PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache);
8080e3c8 2765 havefp = TRUE;
5228a96c
SP
2766 } else {
2767 PL_laststatval = -1;
2768 }
5228a96c 2769 }
05bb32d2 2770 else PL_laststatval = -1;
daa30a68 2771 if (PL_laststatval < 0 && !havefp) report_evil_fh(gv);
5228a96c
SP
2772 }
2773
9ddeeac9 2774 if (PL_laststatval < 0) {
a0d0e21e 2775 max = 0;
9ddeeac9 2776 }
a0d0e21e
LW
2777 }
2778 else {
109c43ed 2779 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2780 io = MUTABLE_IO(SvRV(sv));
ad02613c
SP
2781 if (PL_op->op_type == OP_LSTAT)
2782 goto do_fstat_warning_check;
2783 goto do_fstat_have_io;
2784 }
2785
4bac9ae4 2786 SvTAINTED_off(PL_statname); /* previous tainting irrelevant */
109c43ed 2787 sv_setpv(PL_statname, SvPV_nomg_const_nolen(sv));
a0714e2c 2788 PL_statgv = NULL;
533c011a
NIS
2789 PL_laststype = PL_op->op_type;
2790 if (PL_op->op_type == OP_LSTAT)
0510663f 2791 PL_laststatval = PerlLIO_lstat(SvPV_nolen_const(PL_statname), &PL_statcache);
a0d0e21e 2792 else
0510663f 2793 PL_laststatval = PerlLIO_stat(SvPV_nolen_const(PL_statname), &PL_statcache);
3280af22 2794 if (PL_laststatval < 0) {
5d37acd6
DM
2795 if (ckWARN(WARN_NEWLINE) &&
2796 strchr(SvPV_nolen_const(PL_statname), '\n'))
2797 {
2798 /* PL_warn_nl is constant */
2799 GCC_DIAG_IGNORE(-Wformat-nonliteral);
9014280d 2800 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
5d37acd6
DM
2801 GCC_DIAG_RESTORE;
2802 }
a0d0e21e
LW
2803 max = 0;
2804 }
2805 }
2806
54310121
PP
2807 gimme = GIMME_V;
2808 if (gimme != G_ARRAY) {
2809 if (gimme != G_VOID)
2810 XPUSHs(boolSV(max));
2811 RETURN;
a0d0e21e
LW
2812 }
2813 if (max) {
36477c24
PP
2814 EXTEND(SP, max);
2815 EXTEND_MORTAL(max);
6e449a3a 2816 mPUSHi(PL_statcache.st_dev);
8d8cba88
TC
2817#if ST_INO_SIZE > IVSIZE
2818 mPUSHn(PL_statcache.st_ino);
2819#else
2820# if ST_INO_SIGN <= 0
6e449a3a 2821 mPUSHi(PL_statcache.st_ino);
8d8cba88
TC
2822# else
2823 mPUSHu(PL_statcache.st_ino);
2824# endif
2825#endif
6e449a3a
MHM
2826 mPUSHu(PL_statcache.st_mode);
2827 mPUSHu(PL_statcache.st_nlink);
dfff4baf
BF
2828
2829 sv_setuid(PUSHmortal, PL_statcache.st_uid);
2830 sv_setgid(PUSHmortal, PL_statcache.st_gid);
2831
cbdc8872 2832#ifdef USE_STAT_RDEV
6e449a3a 2833 mPUSHi(PL_statcache.st_rdev);
cbdc8872 2834#else
84bafc02 2835 PUSHs(newSVpvs_flags("", SVs_TEMP));
cbdc8872 2836#endif
146174a9 2837#if Off_t_size > IVSIZE
6e449a3a 2838 mPUSHn(PL_statcache.st_size);
146174a9 2839#else
6e449a3a 2840 mPUSHi(PL_statcache.st_size);
146174a9 2841#endif
cbdc8872 2842#ifdef BIG_TIME
6e449a3a
MHM
2843 mPUSHn(PL_statcache.st_atime);
2844 mPUSHn(PL_statcache.st_mtime);
2845 mPUSHn(PL_statcache.st_ctime);
cbdc8872 2846#else
6e449a3a
MHM
2847 mPUSHi(PL_statcache.st_atime);
2848 mPUSHi(PL_statcache.st_mtime);
2849 mPUSHi(PL_statcache.st_ctime);
cbdc8872 2850#endif
a0d0e21e 2851#ifdef USE_STAT_BLOCKS
6e449a3a
MHM
2852 mPUSHu(PL_statcache.st_blksize);
2853 mPUSHu(PL_statcache.st_blocks);
a0d0e21e 2854#else
84bafc02
NC
2855 PUSHs(newSVpvs_flags("", SVs_TEMP));
2856 PUSHs(newSVpvs_flags("", SVs_TEMP));
a0d0e21e
LW
2857#endif
2858 }
2859 RETURN;
2860}
2861
6c48f025
NC
2862/* All filetest ops avoid manipulating the perl stack pointer in their main
2863 bodies (since commit d2c4d2d1e22d3125), and return using either
2864 S_ft_return_false() or S_ft_return_true(). These two helper functions are
2865 the only two which manipulate the perl stack. To ensure that no stack
2866 manipulation macros are used, the filetest ops avoid defining a local copy
2867 of the stack pointer with dSP. */
2868
8db8f6b6
FC
2869/* If the next filetest is stacked up with this one
2870 (PL_op->op_private & OPpFT_STACKING), we leave
2871 the original argument on the stack for success,
2872 and skip the stacked operators on failure.
2873 The next few macros/functions take care of this.
2874*/
2875
2876static OP *
9a6b02e8 2877S_ft_return_false(pTHX_ SV *ret) {
8db8f6b6 2878 OP *next = NORMAL;
697f9d37
NC
2879 dSP;
2880
226b9201 2881 if (PL_op->op_flags & OPf_REF) XPUSHs(ret);
8db8f6b6
FC
2882 else SETs(ret);
2883 PUTBACK;
697f9d37 2884
9a6b02e8
NC
2885 if (PL_op->op_private & OPpFT_STACKING) {
2886 while (OP_IS_FILETEST(next->op_type)
2887 && next->op_private & OPpFT_STACKED)
2888 next = next->op_next;
2889 }
8db8f6b6
FC
2890 return next;
2891}
2892
07ed4d4b
NC
2893PERL_STATIC_INLINE OP *
2894S_ft_return_true(pTHX_ SV *ret) {
2895 dSP;
2896 if (PL_op->op_flags & OPf_REF)
2897 XPUSHs(PL_op->op_private & OPpFT_STACKING ? (SV *)cGVOP_gv : (ret));
2898 else if (!(PL_op->op_private & OPpFT_STACKING))
2899 SETs(ret);
2900 PUTBACK;
2901 return NORMAL;
2902}
8db8f6b6 2903
48d023d6
NC
2904#define FT_RETURNNO return S_ft_return_false(aTHX_ &PL_sv_no)
2905#define FT_RETURNUNDEF return S_ft_return_false(aTHX_ &PL_sv_undef)
2906#define FT_RETURNYES return S_ft_return_true(aTHX_ &PL_sv_yes)
8db8f6b6 2907
6f1401dc 2908#define tryAMAGICftest_MG(chr) STMT_START { \
d2f67720 2909 if ( (SvFLAGS(*PL_stack_sp) & (SVf_ROK|SVs_GMG)) \
8db8f6b6
FC
2910 && PL_op->op_flags & OPf_KIDS) { \
2911 OP *next = S_try_amagic_ftest(aTHX_ chr); \
2912 if (next) return next; \
2913 } \
6f1401dc
DM
2914 } STMT_END
2915
8db8f6b6 2916STATIC OP *
6f1401dc
DM
2917S_try_amagic_ftest(pTHX_ char chr) {
2918 dVAR;
d2f67720 2919 SV *const arg = *PL_stack_sp;
6f1401dc
DM
2920
2921 assert(chr != '?');
c5780028 2922 if (!(PL_op->op_private & OPpFT_STACKING)) SvGETMAGIC(arg);
6f1401dc 2923
d2f67720 2924 if (SvAMAGIC(arg))
6f1401dc
DM
2925 {
2926 const char tmpchr = chr;
6f1401dc
DM
2927 SV * const tmpsv = amagic_call(arg,
2928 newSVpvn_flags(&tmpchr, 1, SVs_TEMP),
2929 ftest_amg, AMGf_unary);
2930
2931 if (!tmpsv)
8db8f6b6 2932 return NULL;
6f1401dc 2933
48d023d6
NC
2934 return SvTRUE(tmpsv)
2935 ? S_ft_return_true(aTHX_ tmpsv) : S_ft_return_false(aTHX_ tmpsv);
6f1401dc 2936 }
8db8f6b6 2937 return NULL;
6f1401dc
DM
2938}
2939
2940
a0d0e21e
LW
2941PP(pp_ftrread)
2942{
97aff369 2943 dVAR;
9cad6237 2944 I32 result;
af9e49b4
NC
2945 /* Not const, because things tweak this below. Not bool, because there's
2946 no guarantee that OPp_FT_ACCESS is <= CHAR_MAX */
2947#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2948 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
2949 /* Giving some sort of initial value silences compilers. */
2950# ifdef R_OK
2951 int access_mode = R_OK;
2952# else
2953 int access_mode = 0;
2954# endif
5ff3f7a4 2955#else
af9e49b4
NC
2956 /* access_mode is never used, but leaving use_access in makes the
2957 conditional compiling below much clearer. */
2958 I32 use_access = 0;
5ff3f7a4 2959#endif
2dcac756 2960 Mode_t stat_mode = S_IRUSR;
a0d0e21e 2961
af9e49b4 2962 bool effective = FALSE;
07fe7c6a 2963 char opchar = '?';
af9e49b4 2964
7fb13887
BM
2965 switch (PL_op->op_type) {
2966 case OP_FTRREAD: opchar = 'R'; break;
2967 case OP_FTRWRITE: opchar = 'W'; break;
2968 case OP_FTREXEC: opchar = 'X'; break;
2969 case OP_FTEREAD: opchar = 'r'; break;
2970 case OP_FTEWRITE: opchar = 'w'; break;
2971 case OP_FTEEXEC: opchar = 'x'; break;
2972 }
6f1401dc 2973 tryAMAGICftest_MG(opchar);
7fb13887 2974
af9e49b4
NC
2975 switch (PL_op->op_type) {
2976 case OP_FTRREAD:
2977#if !(defined(HAS_ACCESS) && defined(R_OK))
2978 use_access = 0;
2979#endif
2980 break;
2981
2982 case OP_FTRWRITE:
5ff3f7a4 2983#if defined(HAS_ACCESS) && defined(W_OK)
af9e49b4 2984 access_mode = W_OK;
5ff3f7a4 2985#else
af9e49b4 2986 use_access = 0;
5ff3f7a4 2987#endif
af9e49b4
NC
2988 stat_mode = S_IWUSR;
2989 break;
a0d0e21e 2990
af9e49b4 2991 case OP_FTREXEC:
5ff3f7a4 2992#if defined(HAS_ACCESS) && defined(X_OK)
af9e49b4 2993 access_mode = X_OK;
5ff3f7a4 2994#else
af9e49b4 2995 use_access = 0;
5ff3f7a4 2996#endif
af9e49b4
NC
2997 stat_mode = S_IXUSR;
2998 break;
a0d0e21e 2999
af9e49b4 3000 case OP_FTEWRITE:
faee0e31 3001#ifdef PERL_EFF_ACCESS
af9e49b4 3002 access_mode = W_OK;
5ff3f7a4 3003#endif
af9e49b4 3004 stat_mode = S_IWUSR;
7fb13887 3005 /* fall through */
a0d0e21e 3006
af9e49b4
NC
3007 case OP_FTEREAD:
3008#ifndef PERL_EFF_ACCESS
3009 use_access = 0;
3010#endif
3011 effective = TRUE;
3012 break;
3013
af9e49b4 3014 case OP_FTEEXEC:
faee0e31 3015#ifdef PERL_EFF_ACCESS
b376053d 3016 access_mode = X_OK;
5ff3f7a4 3017#else
af9e49b4 3018 use_access = 0;
5ff3f7a4 3019#endif
af9e49b4
NC
3020 stat_mode = S_IXUSR;
3021 effective = TRUE;
3022 break;
3023 }
a0d0e21e 3024
af9e49b4
NC
3025 if (use_access) {
3026#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
d2f67720 3027 const char *name = SvPV_nolen(*PL_stack_sp);
af9e49b4
NC
3028 if (effective) {
3029# ifdef PERL_EFF_ACCESS
3030 result = PERL_EFF_ACCESS(name, access_mode);
3031# else
3032 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
3033 OP_NAME(PL_op));
3034# endif
3035 }
3036 else {
3037# ifdef HAS_ACCESS
3038 result = access(name, access_mode);
3039# else
3040 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
3041# endif
3042 }
5ff3f7a4 3043 if (result == 0)
d2c4d2d1 3044 FT_RETURNYES;
5ff3f7a4 3045 if (result < 0)
d2c4d2d1
FC
3046 FT_RETURNUNDEF;
3047 FT_RETURNNO;
af9e49b4 3048#endif
22865c03 3049 }
af9e49b4 3050
40c852de 3051 result = my_stat_flags(0);
a0d0e21e 3052 if (result < 0)
8db8f6b6 3053 FT_RETURNUNDEF;
af9e49b4 3054 if (cando(stat_mode, effective, &PL_statcache))
8db8f6b6
FC
3055 FT_RETURNYES;
3056 FT_RETURNNO;
a0d0e21e
LW
3057}
3058
3059PP(pp_ftis)
3060{
97aff369 3061 dVAR;
fbb0b3b3 3062 I32 result;
d7f0a2f4 3063 const int op_type = PL_op->op_type;
07fe7c6a 3064 char opchar = '?';
07fe7c6a
BM
3065
3066 switch (op_type) {
3067 case OP_FTIS: opchar = 'e'; break;
3068 case OP_FTSIZE: opchar = 's'; break;
3069 case OP_FTMTIME: opchar = 'M'; break;
3070 case OP_FTCTIME: opchar = 'C'; break;
3071 case OP_FTATIME: opchar = 'A'; break;
3072 }
6f1401dc 3073 tryAMAGICftest_MG(opchar);
07fe7c6a 3074
40c852de 3075 result = my_stat_flags(0);
a0d0e21e 3076 if (result < 0)
8db8f6b6 3077 FT_RETURNUNDEF;
d7f0a2f4 3078 if (op_type == OP_FTIS)
8db8f6b6 3079 FT_RETURNYES;
957b0e1d 3080 {
d7f0a2f4
NC
3081 /* You can't dTARGET inside OP_FTIS, because you'll get
3082 "panic: pad_sv po" - the op is not flagged to have a target. */
957b0e1d 3083 dTARGET;
d7f0a2f4 3084 switch (op_type) {
957b0e1d
NC
3085 case OP_FTSIZE:
3086#if Off_t_size > IVSIZE
8db8f6b6 3087 sv_setnv(TARG, (NV)PL_statcache.st_size);
957b0e1d 3088#else
8db8f6b6 3089 sv_setiv(TARG, (IV)PL_statcache.st_size);
957b0e1d
NC
3090#endif
3091 break;
3092 case OP_FTMTIME:
8db8f6b6
FC
3093 sv_setnv(TARG,
3094 ((NV)PL_basetime - PL_statcache.st_mtime) / 86400.0 );
957b0e1d
NC
3095 break;
3096 case OP_FTATIME:
8db8f6b6
FC
3097 sv_setnv(TARG,
3098 ((NV)PL_basetime - PL_statcache.st_atime) / 86400.0 );
957b0e1d
NC
3099 break;
3100 case OP_FTCTIME:
8db8f6b6
FC
3101 sv_setnv(TARG,
3102 ((NV)PL_basetime - PL_statcache.st_ctime) / 86400.0 );
957b0e1d
NC
3103 break;
3104 }
8db8f6b6 3105 SvSETMAGIC(TARG);
48d023d6
NC
3106 return SvTRUE_nomg(TARG)
3107 ? S_ft_return_true(aTHX_ TARG) : S_ft_return_false(aTHX_ TARG);
957b0e1d 3108 }
a0d0e21e
LW
3109}
3110
a0d0e21e
LW
3111PP(pp_ftrowned)
3112{
97aff369 3113 dVAR;
fbb0b3b3 3114 I32 result;
07fe7c6a 3115 char opchar = '?';
17ad201a 3116
7fb13887
BM
3117 switch (PL_op->op_type) {
3118 case OP_FTROWNED: opchar = 'O'; break;
3119 case OP_FTEOWNED: opchar = 'o'; break;
3120 case OP_FTZERO: opchar = 'z'; break;
3121 case OP_FTSOCK: opchar = 'S'; break;
3122 case OP_FTCHR: opchar = 'c'; break;
3123 case OP_FTBLK: opchar = 'b'; break;
3124 case OP_FTFILE: opchar = 'f'; break;
3125 case OP_FTDIR: opchar = 'd'; break;
3126 case OP_FTPIPE: opchar = 'p'; break;
3127 case OP_FTSUID: opchar = 'u'; break;
3128 case OP_FTSGID: opchar = 'g'; break;
3129 case OP_FTSVTX: opchar = 'k'; break;
3130 }
6f1401dc 3131 tryAMAGICftest_MG(opchar);
7fb13887 3132
17ad201a
NC
3133 /* I believe that all these three are likely to be defined on most every
3134 system these days. */
3135#ifndef S_ISUID
c410dd6a 3136 if(PL_op->op_type == OP_FTSUID) {
8db8f6b6 3137 FT_RETURNNO;
c410dd6a 3138 }
17ad201a
NC
3139#endif
3140#ifndef S_ISGID
c410dd6a 3141 if(PL_op->op_type == OP_FTSGID) {
8db8f6b6 3142 FT_RETURNNO;
c410dd6a 3143 }
17ad201a
NC
3144#endif
3145#ifndef S_ISVTX
c410dd6a 3146 if(PL_op->op_type == OP_FTSVTX) {
8db8f6b6 3147 FT_RETURNNO;
c410dd6a 3148 }
17ad201a
NC
3149#endif
3150
40c852de 3151 result = my_stat_flags(0);
a0d0e21e 3152 if (result < 0)
8db8f6b6 3153 FT_RETURNUNDEF;
f1cb2d48
NC
3154 switch (PL_op->op_type) {
3155 case OP_FTROWNED:
985213f2 3156 if (PL_statcache.st_uid == PerlProc_getuid())
8db8f6b6 3157 FT_RETURNYES;
f1cb2d48
NC
3158 break;
3159 case OP_FTEOWNED:
985213f2 3160 if (PL_statcache.st_uid == PerlProc_geteuid())
8db8f6b6 3161 FT_RETURNYES;
f1cb2d48
NC
3162 break;
3163 case OP_FTZERO:
3164 if (PL_statcache.st_size == 0)
8db8f6b6 3165 FT_RETURNYES;
f1cb2d48
NC
3166 break;
3167 case OP_FTSOCK:
3168 if (S_ISSOCK(PL_statcache.st_mode))
8db8f6b6 3169 FT_RETURNYES;
f1cb2d48
NC
3170 break;
3171 case OP_FTCHR:
3172 if (S_ISCHR(PL_statcache.st_mode))
8db8f6b6 3173 FT_RETURNYES;
f1cb2d48
NC
3174 break;
3175 case OP_FTBLK:
3176 if (S_ISBLK(PL_statcache.st_mode))
8db8f6b6 3177 FT_RETURNYES;
f1cb2d48
NC
3178 break;
3179 case OP_FTFILE:
3180 if (S_ISREG(PL_statcache.st_mode))
8db8f6b6 3181 FT_RETURNYES;
f1cb2d48
NC
3182 break;
3183 case OP_FTDIR:
3184 if (S_ISDIR(PL_statcache.st_mode))
8db8f6b6 3185 FT_RETURNYES;
f1cb2d48
NC
3186 break;
3187 case OP_FTPIPE:
3188 if (S_ISFIFO(PL_statcache.st_mode))
8db8f6b6 3189 FT_RETURNYES;
f1cb2d48 3190 break;
a0d0e21e 3191#ifdef S_ISUID
17ad201a
NC
3192 case OP_FTSUID:
3193 if (PL_statcache.st_mode & S_ISUID)
8db8f6b6 3194 FT_RETURNYES;
17ad201a 3195 break;
a0d0e21e 3196#endif
a0d0e21e 3197#ifdef S_ISGID
17ad201a
NC
3198 case OP_FTSGID:
3199 if (PL_statcache.st_mode & S_ISGID)
8db8f6b6 3200 FT_RETURNYES;
17ad201a
NC
3201 break;
3202#endif
3203#ifdef S_ISVTX
3204 case OP_FTSVTX:
3205 if (PL_statcache.st_mode & S_ISVTX)
8db8f6b6 3206 FT_RETURNYES;
17ad201a 3207 break;
a0d0e21e 3208#endif
17ad201a 3209 }
8db8f6b6 3210 FT_RETURNNO;
a0d0e21e
LW
3211}
3212
17ad201a 3213PP(pp_ftlink)
a0d0e21e 3214{
97aff369 3215 dVAR;
500ff13f 3216 I32 result;
07fe7c6a 3217
6f1401dc 3218 tryAMAGICftest_MG('l');
40c852de 3219 result = my_lstat_flags(0);
500ff13f 3220
a0d0e21e 3221 if (result < 0)
8db8f6b6 3222 FT_RETURNUNDEF;
17ad201a 3223 if (S_ISLNK(PL_statcache.st_mode))
8db8f6b6
FC
3224 FT_RETURNYES;
3225 FT_RETURNNO;
a0d0e21e
LW
3226}
3227
3228PP(pp_fttty)
3229{
97aff369 3230 dVAR;
a0d0e21e
LW
3231 int fd;
3232 GV *gv;
0784aae0 3233 char *name = NULL;
40c852de 3234 STRLEN namelen;
fb73857a 3235
6f1401dc 3236 tryAMAGICftest_MG('t');
07fe7c6a 3237
533c011a 3238 if (PL_op->op_flags & OPf_REF)
146174a9 3239 gv = cGVOP_gv;
e5e154d2 3240 else {
d2f67720 3241 SV *tmpsv = *PL_stack_sp;
e5e154d2 3242 if (!(gv = MAYBE_DEREF_GV_nomg(tmpsv))) {
40c852de
DM
3243 name = SvPV_nomg(tmpsv, namelen);
3244 gv = gv_fetchpvn_flags(name, namelen, SvUTF8(tmpsv), SVt_PVIO);
e5e154d2 3245 }
40c852de 3246 }
fb73857a 3247
a0d0e21e 3248 if (GvIO(gv) && IoIFP(GvIOp(gv)))
760ac839 3249 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
b6cb94c5 3250 else if (name && isDIGIT(*name))
40c852de 3251 fd = atoi(name);
a0d0e21e 3252 else
8db8f6b6 3253 FT_RETURNUNDEF;
6ad3d225 3254 if (PerlLIO_isatty(fd))
8db8f6b6
FC
3255 FT_RETURNYES;
3256 FT_RETURNNO;
a0d0e21e
LW
3257}
3258
a0d0e21e
LW
3259PP(pp_fttext)
3260{
97aff369 3261 dVAR;
a0d0e21e 3262 I32 i;
b66f3475 3263 SSize_t len;
a0d0e21e
LW
3264 I32 odd = 0;
3265 STDCHAR tbuf[512];
eb578fdb
KW
3266 STDCHAR *s;
3267 IO *io;
3268 SV *sv = NULL;
5f05dabc 3269 GV *gv;
146174a9 3270 PerlIO *fp;
a0d0e21e 3271
6f1401dc 3272 tryAMAGICftest_MG(PL_op->op_type == OP_FTTEXT ? 'T' : 'B');
07fe7c6a 3273
533c011a 3274 if (PL_op->op_flags & OPf_REF)
146174a9 3275 gv = cGVOP_gv;
d2c4d2d1 3276 else if ((PL_op->op_private & (OPpFT_STACKED|OPpFT_AFTER_t))
8db8f6b6 3277 == OPpFT_STACKED)
ba8182f8 3278 gv = PL_defgv;
d2c4d2d1 3279 else {
d2f67720 3280 sv = *PL_stack_sp;
d2c4d2d1 3281 gv = MAYBE_DEREF_GV_nomg(sv);
8db8f6b6 3282 }
5f05dabc
PP
3283
3284 if (gv) {
3280af22
NIS
3285 if (gv == PL_defgv) {
3286 if (PL_statgv)
bd5f6c01
FC
3287 io = SvTYPE(PL_statgv) == SVt_PVIO
3288 ? (IO *)PL_statgv
3289 : GvIO(PL_statgv);
a0d0e21e 3290 else {
a0d0e21e
LW
3291 goto really_filename;
3292 }
3293 }
3294 else {
3280af22 3295 PL_statgv = gv;
76f68e9b 3296 sv_setpvs(PL_statname, "");
3280af22 3297 io = GvIO(PL_statgv);
a0d0e21e 3298 }
eb4c377a 3299 PL_laststatval = -1;
21a64c3e 3300 PL_laststype = OP_STAT;
a0d0e21e 3301 if (io && IoIFP(io)) {
5f05dabc 3302 if (! PerlIO_has_base(IoIFP(io)))
cea2e8a9 3303 DIE(aTHX_ "-T and -B not implemented on filehandles");
3280af22
NIS
3304 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3305 if (PL_laststatval < 0)
8db8f6b6 3306 FT_RETURNUNDEF;
9cbac4c7 3307 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
533c011a 3308 if (PL_op->op_type == OP_FTTEXT)
8db8f6b6 3309 FT_RETURNNO;
a0d0e21e 3310 else
8db8f6b6 3311 FT_RETURNYES;
9cbac4c7 3312 }
a20bf0c3 3313 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
760ac839 3314 i = PerlIO_getc(IoIFP(io));
a0d0e21e 3315 if (i != EOF)
760ac839 3316 (void)PerlIO_ungetc(IoIFP(io),i);
a0d0e21e 3317 }
a20bf0c3 3318 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
8db8f6b6 3319 FT_RETURNYES;
a20bf0c3
JH
3320 len = PerlIO_get_bufsiz(IoIFP(io));
3321 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
760ac839
LW
3322 /* sfio can have large buffers - limit to 512 */
3323 if (len > 512)
3324 len = 512;
a0d0e21e
LW
3325 }
3326 else {
2ad48547 3327 SETERRNO(EBADF,RMS_IFI);
3f12cff4 3328 report_evil_fh(gv);
93189314 3329 SETERRNO(EBADF,RMS_IFI);
8db8f6b6 3330 FT_RETURNUNDEF;
a0d0e21e
LW
3331 }
3332 }
3333 else {
81e9306f 3334 sv_setpv(PL_statname, SvPV_nomg_const_nolen(sv));
5f05dabc 3335 really_filename:
a0714e2c 3336 PL_statgv = NULL;
aa07b2f6 3337 if (!(fp = PerlIO_open(SvPVX_const(PL_statname), "r"))) {
ad2d99e3
FC
3338 if (!gv) {
3339 PL_laststatval = -1;
3340 PL_laststype = OP_STAT;
3341 }
349d4f2f
NC
3342 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname),
3343 '\n'))
5d37acd6
DM
3344 {
3345 /* PL_warn_nl is constant */
3346 GCC_DIAG_IGNORE(-Wformat-nonliteral);
9014280d 3347 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
5d37acd6
DM
3348 GCC_DIAG_RESTORE;
3349 }