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[perl5.git] / pp_sys.c
CommitLineData
a0d0e21e
LW
1/* pp_sys.c
2 *
fdf8c088 3 * Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
1129b882 4 * 2004, 2005, 2006, 2007, 2008 by Larry Wall and others
a0d0e21e
LW
5 *
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
8 *
9 */
10
11/*
12 * But only a short way ahead its floor and the walls on either side were
13 * cloven by a great fissure, out of which the red glare came, now leaping
14 * up, now dying down into darkness; and all the while far below there was
15 * a rumour and a trouble as of great engines throbbing and labouring.
4ac71550
TC
16 *
17 * [p.945 of _The Lord of the Rings_, VI/iii: "Mount Doom"]
a0d0e21e
LW
18 */
19
166f8a29
DM
20/* This file contains system pp ("push/pop") functions that
21 * execute the opcodes that make up a perl program. A typical pp function
22 * expects to find its arguments on the stack, and usually pushes its
23 * results onto the stack, hence the 'pp' terminology. Each OP structure
24 * contains a pointer to the relevant pp_foo() function.
25 *
26 * By 'system', we mean ops which interact with the OS, such as pp_open().
27 */
28
a0d0e21e 29#include "EXTERN.h"
864dbfa3 30#define PERL_IN_PP_SYS_C
a0d0e21e 31#include "perl.h"
d95a2ea5
CB
32#include "time64.h"
33#include "time64.c"
a0d0e21e 34
f1066039
JH
35#ifdef I_SHADOW
36/* Shadow password support for solaris - pdo@cs.umd.edu
37 * Not just Solaris: at least HP-UX, IRIX, Linux.
3813c136
JH
38 * The API is from SysV.
39 *
40 * There are at least two more shadow interfaces,
41 * see the comments in pp_gpwent().
42 *
43 * --jhi */
44# ifdef __hpux__
c529f79d 45/* There is a MAXINT coming from <shadow.h> <- <hpsecurity.h> <- <values.h>
301e8125 46 * and another MAXINT from "perl.h" <- <sys/param.h>. */
3813c136
JH
47# undef MAXINT
48# endif
49# include <shadow.h>
8c0bfa08
PB
50#endif
51
76c32331
PP
52#ifdef I_SYS_RESOURCE
53# include <sys/resource.h>
16d20bd9 54#endif
a0d0e21e 55
2986a63f
JH
56#ifdef NETWARE
57NETDB_DEFINE_CONTEXT
58#endif
59
a0d0e21e 60#ifdef HAS_SELECT
1e743fda
JH
61# ifdef I_SYS_SELECT
62# include <sys/select.h>
63# endif
a0d0e21e 64#endif
a0d0e21e 65
dc45a647
MB
66/* XXX Configure test needed.
67 h_errno might not be a simple 'int', especially for multi-threaded
5ff3f7a4
GS
68 applications, see "extern int errno in perl.h". Creating such
69 a test requires taking into account the differences between
70 compiling multithreaded and singlethreaded ($ccflags et al).
71 HOST_NOT_FOUND is typically defined in <netdb.h>.
dc45a647 72*/
cb50131a 73#if defined(HOST_NOT_FOUND) && !defined(h_errno) && !defined(__CYGWIN__)
a0d0e21e
LW
74extern int h_errno;
75#endif
76
77#ifdef HAS_PASSWD
78# ifdef I_PWD
79# include <pwd.h>
80# else
fd8cd3a3 81# if !defined(VMS)
20ce7b12
GS
82 struct passwd *getpwnam (char *);
83 struct passwd *getpwuid (Uid_t);
fd8cd3a3 84# endif
a0d0e21e 85# endif
28e8609d 86# ifdef HAS_GETPWENT
10bc17b6 87#ifndef getpwent
20ce7b12 88 struct passwd *getpwent (void);
c2a8f790 89#elif defined (VMS) && defined (my_getpwent)
9fa802f3 90 struct passwd *Perl_my_getpwent (pTHX);
10bc17b6 91#endif
28e8609d 92# endif
a0d0e21e
LW
93#endif
94
95#ifdef HAS_GROUP
96# ifdef I_GRP
97# include <grp.h>
98# else
20ce7b12
GS
99 struct group *getgrnam (char *);
100 struct group *getgrgid (Gid_t);
a0d0e21e 101# endif
28e8609d 102# ifdef HAS_GETGRENT
10bc17b6 103#ifndef getgrent
20ce7b12 104 struct group *getgrent (void);
10bc17b6 105#endif
28e8609d 106# endif
a0d0e21e
LW
107#endif
108
109#ifdef I_UTIME
3730b96e 110# if defined(_MSC_VER) || defined(__MINGW32__)
3fe9a6f1
PP
111# include <sys/utime.h>
112# else
113# include <utime.h>
114# endif
a0d0e21e 115#endif
a0d0e21e 116
cbdc8872 117#ifdef HAS_CHSIZE
cd52b7b2
PP
118# ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
119# undef my_chsize
120# endif
72cc7e2a 121# define my_chsize PerlLIO_chsize
27da23d5
JH
122#else
123# ifdef HAS_TRUNCATE
124# define my_chsize PerlLIO_chsize
125# else
126I32 my_chsize(int fd, Off_t length);
127# endif
cbdc8872
PP
128#endif
129
ff68c719
PP
130#ifdef HAS_FLOCK
131# define FLOCK flock
132#else /* no flock() */
133
36477c24
PP
134 /* fcntl.h might not have been included, even if it exists, because
135 the current Configure only sets I_FCNTL if it's needed to pick up
136 the *_OK constants. Make sure it has been included before testing
137 the fcntl() locking constants. */
138# if defined(HAS_FCNTL) && !defined(I_FCNTL)
139# include <fcntl.h>
140# endif
141
9d9004a9 142# if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
ff68c719
PP
143# define FLOCK fcntl_emulate_flock
144# define FCNTL_EMULATE_FLOCK
145# else /* no flock() or fcntl(F_SETLK,...) */
146# ifdef HAS_LOCKF
147# define FLOCK lockf_emulate_flock
148# define LOCKF_EMULATE_FLOCK
149# endif /* lockf */
150# endif /* no flock() or fcntl(F_SETLK,...) */
151
152# ifdef FLOCK
20ce7b12 153 static int FLOCK (int, int);
ff68c719
PP
154
155 /*
156 * These are the flock() constants. Since this sytems doesn't have
157 * flock(), the values of the constants are probably not available.
158 */
159# ifndef LOCK_SH
160# define LOCK_SH 1
161# endif
162# ifndef LOCK_EX
163# define LOCK_EX 2
164# endif
165# ifndef LOCK_NB
166# define LOCK_NB 4
167# endif
168# ifndef LOCK_UN
169# define LOCK_UN 8
170# endif
171# endif /* emulating flock() */
172
173#endif /* no flock() */
55497cff 174
85ab1d1d 175#define ZBTLEN 10
27da23d5 176static const char zero_but_true[ZBTLEN + 1] = "0 but true";
85ab1d1d 177
5ff3f7a4
GS
178#if defined(I_SYS_ACCESS) && !defined(R_OK)
179# include <sys/access.h>
180#endif
181
c529f79d
CB
182#if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
183# define FD_CLOEXEC 1 /* NeXT needs this */
184#endif
185
a4af207c
JH
186#include "reentr.h"
187
9cffb111
OS
188#ifdef __Lynx__
189/* Missing protos on LynxOS */
190void sethostent(int);
191void endhostent(void);
192void setnetent(int);
193void endnetent(void);
194void setprotoent(int);
195void endprotoent(void);
196void setservent(int);
197void endservent(void);
198#endif
199
faee0e31 200#undef PERL_EFF_ACCESS /* EFFective uid/gid ACCESS */
5ff3f7a4
GS
201
202/* F_OK unused: if stat() cannot find it... */
203
d7558cad 204#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
c955f117 205 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
d7558cad 206# define PERL_EFF_ACCESS(p,f) (access((p), (f) | EFF_ONLY_OK))
5ff3f7a4
GS
207#endif
208
d7558cad 209#if !defined(PERL_EFF_ACCESS) && defined(HAS_EACCESS)
3813c136 210# ifdef I_SYS_SECURITY
5ff3f7a4
GS
211# include <sys/security.h>
212# endif
c955f117
JH
213# ifdef ACC_SELF
214 /* HP SecureWare */
d7558cad 215# define PERL_EFF_ACCESS(p,f) (eaccess((p), (f), ACC_SELF))
c955f117
JH
216# else
217 /* SCO */
d7558cad 218# define PERL_EFF_ACCESS(p,f) (eaccess((p), (f)))
c955f117 219# endif
5ff3f7a4
GS
220#endif
221
d7558cad 222#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESSX) && defined(ACC_SELF)
c955f117 223 /* AIX */
d7558cad 224# define PERL_EFF_ACCESS(p,f) (accessx((p), (f), ACC_SELF))
5ff3f7a4
GS
225#endif
226
d7558cad
NC
227
228#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) \
327c3667
GS
229 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
230 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
5ff3f7a4 231/* The Hard Way. */
327c3667 232STATIC int
7f4774ae 233S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
ba106d47 234{
c4420975
AL
235 const Uid_t ruid = getuid();
236 const Uid_t euid = geteuid();
237 const Gid_t rgid = getgid();
238 const Gid_t egid = getegid();
5ff3f7a4
GS
239 int res;
240
5ff3f7a4 241#if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
cea2e8a9 242 Perl_croak(aTHX_ "switching effective uid is not implemented");
5ff3f7a4
GS
243#else
244#ifdef HAS_SETREUID
245 if (setreuid(euid, ruid))
246#else
247#ifdef HAS_SETRESUID
248 if (setresuid(euid, ruid, (Uid_t)-1))
249#endif
250#endif
dcbac5bb 251 /* diag_listed_as: entering effective %s failed */
cea2e8a9 252 Perl_croak(aTHX_ "entering effective uid failed");
5ff3f7a4
GS
253#endif
254
255#if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
cea2e8a9 256 Perl_croak(aTHX_ "switching effective gid is not implemented");
5ff3f7a4
GS
257#else
258#ifdef HAS_SETREGID
259 if (setregid(egid, rgid))
260#else
261#ifdef HAS_SETRESGID
262 if (setresgid(egid, rgid, (Gid_t)-1))
263#endif
264#endif
dcbac5bb 265 /* diag_listed_as: entering effective %s failed */
cea2e8a9 266 Perl_croak(aTHX_ "entering effective gid failed");
5ff3f7a4
GS
267#endif
268
269 res = access(path, mode);
270
271#ifdef HAS_SETREUID
272 if (setreuid(ruid, euid))
273#else
274#ifdef HAS_SETRESUID
275 if (setresuid(ruid, euid, (Uid_t)-1))
276#endif
277#endif
dcbac5bb 278 /* diag_listed_as: leaving effective %s failed */
cea2e8a9 279 Perl_croak(aTHX_ "leaving effective uid failed");
5ff3f7a4
GS
280
281#ifdef HAS_SETREGID
282 if (setregid(rgid, egid))
283#else
284#ifdef HAS_SETRESGID
285 if (setresgid(rgid, egid, (Gid_t)-1))
286#endif
287#endif
dcbac5bb 288 /* diag_listed_as: leaving effective %s failed */
cea2e8a9 289 Perl_croak(aTHX_ "leaving effective gid failed");
5ff3f7a4
GS
290
291 return res;
292}
d6864606 293# define PERL_EFF_ACCESS(p,f) (S_emulate_eaccess(aTHX_ (p), (f)))
5ff3f7a4
GS
294#endif
295
a0d0e21e
LW
296PP(pp_backtick)
297{
97aff369 298 dVAR; dSP; dTARGET;
760ac839 299 PerlIO *fp;
1b6737cc 300 const char * const tmps = POPpconstx;
f54cb97a 301 const I32 gimme = GIMME_V;
e1ec3a88 302 const char *mode = "r";
54310121 303
a0d0e21e 304 TAINT_PROPER("``");
16fe6d59
GS
305 if (PL_op->op_private & OPpOPEN_IN_RAW)
306 mode = "rb";
307 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
308 mode = "rt";
2fbb330f 309 fp = PerlProc_popen(tmps, mode);
a0d0e21e 310 if (fp) {
11bcd5da 311 const char * const type = Perl_PerlIO_context_layers(aTHX_ NULL);
ac27b0f5
NIS
312 if (type && *type)
313 PerlIO_apply_layers(aTHX_ fp,mode,type);
314
54310121 315 if (gimme == G_VOID) {
96827780
MB
316 char tmpbuf[256];
317 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
a79db61d 318 NOOP;
54310121
PP
319 }
320 else if (gimme == G_SCALAR) {
d343c3ef 321 ENTER_with_name("backtick");
75af1a9c 322 SAVESPTR(PL_rs);
fa326138 323 PL_rs = &PL_sv_undef;
76f68e9b 324 sv_setpvs(TARG, ""); /* note that this preserves previous buffer */
bd61b366 325 while (sv_gets(TARG, fp, SvCUR(TARG)) != NULL)
a79db61d 326 NOOP;
d343c3ef 327 LEAVE_with_name("backtick");
a0d0e21e 328 XPUSHs(TARG);
aa689395 329 SvTAINTED_on(TARG);
a0d0e21e
LW
330 }
331 else {
a0d0e21e 332 for (;;) {
561b68a9 333 SV * const sv = newSV(79);
bd61b366 334 if (sv_gets(sv, fp, 0) == NULL) {
a0d0e21e
LW
335 SvREFCNT_dec(sv);
336 break;
337 }
6e449a3a 338 mXPUSHs(sv);
a0d0e21e 339 if (SvLEN(sv) - SvCUR(sv) > 20) {
1da4ca5f 340 SvPV_shrink_to_cur(sv);
a0d0e21e 341 }
aa689395 342 SvTAINTED_on(sv);
a0d0e21e
LW
343 }
344 }
2fbb330f 345 STATUS_NATIVE_CHILD_SET(PerlProc_pclose(fp));
aa689395 346 TAINT; /* "I believe that this is not gratuitous!" */
a0d0e21e
LW
347 }
348 else {
37038d91 349 STATUS_NATIVE_CHILD_SET(-1);
54310121 350 if (gimme == G_SCALAR)
a0d0e21e
LW
351 RETPUSHUNDEF;
352 }
353
354 RETURN;
355}
356
357PP(pp_glob)
358{
27da23d5 359 dVAR;
a0d0e21e 360 OP *result;
9426e1a5 361 dSP;
9423a867
FC
362 GV * const gv = (PL_op->op_flags & OPf_SPECIAL) ? NULL : (GV *)POPs;
363
364 PUTBACK;
365
151cea25
FC
366 /* make a copy of the pattern if it is gmagical, to ensure that magic
367 * is called once and only once */
9423a867 368 if (SvGMAGICAL(TOPs)) TOPs = sv_2mortal(newSVsv(TOPs));
9426e1a5 369
fc99edcf 370 tryAMAGICunTARGETlist(iter_amg, (PL_op->op_flags & OPf_SPECIAL));
d1bea3d8
DM
371
372 if (PL_op->op_flags & OPf_SPECIAL) {
373 /* call Perl-level glob function instead. Stack args are:
9423a867 374 * MARK, wildcard
d1bea3d8
DM
375 * and following OPs should be: gv(CORE::GLOBAL::glob), entersub
376 * */
377 return NORMAL;
378 }
d67594ff 379 if (PL_globhook) {
d67594ff
FC
380 PL_globhook(aTHX);
381 return NORMAL;
382 }
f5284f61 383
71686f12
GS
384 /* Note that we only ever get here if File::Glob fails to load
385 * without at the same time croaking, for some reason, or if
386 * perl was built with PERL_EXTERNAL_GLOB */
387
d343c3ef 388 ENTER_with_name("glob");
a0d0e21e 389
c90c0ff4 390#ifndef VMS
284167a5 391 if (TAINTING_get) {
7bac28a0
PP
392 /*
393 * The external globbing program may use things we can't control,
394 * so for security reasons we must assume the worst.
395 */
396 TAINT;
22c35a8c 397 taint_proper(PL_no_security, "glob");
7bac28a0 398 }
c90c0ff4 399#endif /* !VMS */
7bac28a0 400
3280af22 401 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
9423a867 402 PL_last_in_gv = gv;
a0d0e21e 403
3280af22 404 SAVESPTR(PL_rs); /* This is not permanent, either. */
84bafc02 405 PL_rs = newSVpvs_flags("\000", SVs_TEMP);
c07a80fd
PP
406#ifndef DOSISH
407#ifndef CSH
6b88bc9c 408 *SvPVX(PL_rs) = '\n';
a0d0e21e 409#endif /* !CSH */
55497cff 410#endif /* !DOSISH */
c07a80fd 411
a0d0e21e 412 result = do_readline();
d343c3ef 413 LEAVE_with_name("glob");
a0d0e21e
LW
414 return result;
415}
416
a0d0e21e
LW
417PP(pp_rcatline)
418{
97aff369 419 dVAR;
146174a9 420 PL_last_in_gv = cGVOP_gv;
a0d0e21e
LW
421 return do_readline();
422}
423
424PP(pp_warn)
425{
97aff369 426 dVAR; dSP; dMARK;
c5df3096 427 SV *exsv;
06bf62c7 428 STRLEN len;
b59aed67 429 if (SP - MARK > 1) {
a0d0e21e 430 dTARGET;
3280af22 431 do_join(TARG, &PL_sv_no, MARK, SP);
c5df3096 432 exsv = TARG;
a0d0e21e
LW
433 SP = MARK + 1;
434 }
b59aed67 435 else if (SP == MARK) {
c5df3096 436 exsv = &PL_sv_no;
b59aed67 437 EXTEND(SP, 1);
83f957ec 438 SP = MARK + 1;
b59aed67 439 }
a0d0e21e 440 else {
c5df3096 441 exsv = TOPs;
ef5fe392 442 if (SvGMAGICAL(exsv)) exsv = sv_mortalcopy(exsv);
a0d0e21e 443 }
06bf62c7 444
72d74926 445 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
c5df3096
Z
446 /* well-formed exception supplied */
447 }
c5df3096 448 else {
eed484f9
DD
449 SV * const errsv = ERRSV;
450 SvGETMAGIC(errsv);
451 if (SvROK(errsv)) {
452 if (SvGMAGICAL(errsv)) {
ef5fe392 453 exsv = sv_newmortal();
eed484f9 454 sv_setsv_nomg(exsv, errsv);
ef5fe392 455 }
eed484f9 456 else exsv = errsv;
ef5fe392 457 }
eed484f9 458 else if (SvPOKp(errsv) ? SvCUR(errsv) : SvNIOKp(errsv)) {
ef5fe392 459 exsv = sv_newmortal();
eed484f9 460 sv_setsv_nomg(exsv, errsv);
ef5fe392
FC
461 sv_catpvs(exsv, "\t...caught");
462 }
463 else {
c5df3096 464 exsv = newSVpvs_flags("Warning: something's wrong", SVs_TEMP);
ef5fe392 465 }
c5df3096 466 }
3b7f69a5
FC
467 if (SvROK(exsv) && !PL_warnhook)
468 Perl_warn(aTHX_ "%"SVf, SVfARG(exsv));
469 else warn_sv(exsv);
a0d0e21e
LW
470 RETSETYES;
471}
472
473PP(pp_die)
474{
97aff369 475 dVAR; dSP; dMARK;
c5df3096 476 SV *exsv;
06bf62c7 477 STRLEN len;
96e176bf 478#ifdef VMS
97124ef6
FC
479 VMSISH_HUSHED =
480 VMSISH_HUSHED || (PL_curcop->op_private & OPpHUSH_VMSISH);
96e176bf 481#endif
a0d0e21e
LW
482 if (SP - MARK != 1) {
483 dTARGET;
3280af22 484 do_join(TARG, &PL_sv_no, MARK, SP);
c5df3096 485 exsv = TARG;
a0d0e21e
LW
486 SP = MARK + 1;
487 }
488 else {
c5df3096 489 exsv = TOPs;
a0d0e21e 490 }
c5df3096 491
72d74926 492 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
c5df3096
Z
493 /* well-formed exception supplied */
494 }
eed484f9
DD
495 else {
496 SV * const errsv = ERRSV;
8b3945e7 497 SvGETMAGIC(errsv);
eed484f9
DD
498 if (SvROK(errsv)) {
499 exsv = errsv;
500 if (sv_isobject(exsv)) {
501 HV * const stash = SvSTASH(SvRV(exsv));
502 GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
503 if (gv) {
504 SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
505 SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
506 EXTEND(SP, 3);
507 PUSHMARK(SP);
508 PUSHs(exsv);
509 PUSHs(file);
510 PUSHs(line);
511 PUTBACK;
512 call_sv(MUTABLE_SV(GvCV(gv)),
513 G_SCALAR|G_EVAL|G_KEEPERR);
514 exsv = sv_mortalcopy(*PL_stack_sp--);
515 }
05423cc9 516 }
4e6ea2c3 517 }
8b3945e7 518 else if (SvPOK(errsv) && SvCUR(errsv)) {
eed484f9
DD
519 exsv = sv_mortalcopy(errsv);
520 sv_catpvs(exsv, "\t...propagated");
521 }
522 else {
523 exsv = newSVpvs_flags("Died", SVs_TEMP);
524 }
c5df3096 525 }
9fed9930 526 return die_sv(exsv);
a0d0e21e
LW
527}
528
529/* I/O. */
530
d682515d 531OP *
3e0cb5de 532Perl_tied_method(pTHX_ SV *methname, SV **sp, SV *const sv,
d682515d 533 const MAGIC *const mg, const U32 flags, U32 argc, ...)
6bcca55b 534{
d8ef3a16
DM
535 SV **orig_sp = sp;
536 I32 ret_args;
537
d682515d 538 PERL_ARGS_ASSERT_TIED_METHOD;
6bcca55b
NC
539
540 /* Ensure that our flag bits do not overlap. */
d682515d
NC
541 assert((TIED_METHOD_MORTALIZE_NOT_NEEDED & G_WANT) == 0);
542 assert((TIED_METHOD_ARGUMENTS_ON_STACK & G_WANT) == 0);
94bc412f 543 assert((TIED_METHOD_SAY & G_WANT) == 0);
6bcca55b 544
d8ef3a16
DM
545 PUTBACK; /* sp is at *foot* of args, so this pops args from old stack */
546 PUSHSTACKi(PERLSI_MAGIC);
547 EXTEND(SP, argc+1); /* object + args */
6bcca55b 548 PUSHMARK(sp);
d682515d 549 PUSHs(SvTIED_obj(sv, mg));
d8ef3a16
DM
550 if (flags & TIED_METHOD_ARGUMENTS_ON_STACK) {
551 Copy(orig_sp + 2, sp + 1, argc, SV*); /* copy args to new stack */
1a8c1d59 552 sp += argc;
d8ef3a16 553 }
1a8c1d59 554 else if (argc) {
d682515d
NC
555 const U32 mortalize_not_needed
556 = flags & TIED_METHOD_MORTALIZE_NOT_NEEDED;
6bcca55b 557 va_list args;
0d5509eb 558 va_start(args, argc);
6bcca55b
NC
559 do {
560 SV *const arg = va_arg(args, SV *);
561 if(mortalize_not_needed)
562 PUSHs(arg);
563 else
564 mPUSHs(arg);
565 } while (--argc);
566 va_end(args);
567 }
568
569 PUTBACK;
d682515d 570 ENTER_with_name("call_tied_method");
94bc412f
NC
571 if (flags & TIED_METHOD_SAY) {
572 /* local $\ = "\n" */
573 SAVEGENERICSV(PL_ors_sv);
574 PL_ors_sv = newSVpvs("\n");
575 }
3e0cb5de 576 ret_args = call_sv(methname, (flags & G_WANT)|G_METHOD_NAMED);
d8ef3a16
DM
577 SPAGAIN;
578 orig_sp = sp;
579 POPSTACK;
580 SPAGAIN;
581 if (ret_args) { /* copy results back to original stack */
582 EXTEND(sp, ret_args);
583 Copy(orig_sp - ret_args + 1, sp + 1, ret_args, SV*);
584 sp += ret_args;
585 PUTBACK;
586 }
d682515d 587 LEAVE_with_name("call_tied_method");
6bcca55b
NC
588 return NORMAL;
589}
590
d682515d
NC
591#define tied_method0(a,b,c,d) \
592 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,0)
593#define tied_method1(a,b,c,d,e) \
594 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,1,e)
595#define tied_method2(a,b,c,d,e,f) \
596 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,2,e,f)
6bcca55b 597
a0d0e21e
LW
598PP(pp_open)
599{
27da23d5 600 dVAR; dSP;
a567e93b
NIS
601 dMARK; dORIGMARK;
602 dTARGET;
a0d0e21e 603 SV *sv;
5b468f54 604 IO *io;
5c144d81 605 const char *tmps;
a0d0e21e 606 STRLEN len;
a567e93b 607 bool ok;
a0d0e21e 608
159b6efe 609 GV * const gv = MUTABLE_GV(*++MARK);
c4420975 610
13be902c 611 if (!isGV(gv) && !(SvTYPE(gv) == SVt_PVLV && isGV_with_GP(gv)))
cea2e8a9 612 DIE(aTHX_ PL_no_usym, "filehandle");
abc718f2 613
a79db61d 614 if ((io = GvIOp(gv))) {
a5e1d062 615 const MAGIC *mg;
36477c24 616 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
853846ea 617
a2a5de95 618 if (IoDIRP(io))
d1d15184 619 Perl_ck_warner_d(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
d0c0e7dd
FC
620 "Opening dirhandle %"HEKf" also as a file",
621 HEKfARG(GvENAME_HEK(gv)));
abc718f2 622
ad64d0ec 623 mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
c4420975
AL
624 if (mg) {
625 /* Method's args are same as ours ... */
626 /* ... except handle is replaced by the object */
3e0cb5de 627 return Perl_tied_method(aTHX_ SV_CONST(OPEN), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC
628 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
629 sp - mark);
c4420975 630 }
4592e6ca
NIS
631 }
632
a567e93b
NIS
633 if (MARK < SP) {
634 sv = *++MARK;
635 }
636 else {
35a08ec7 637 sv = GvSVn(gv);
a567e93b
NIS
638 }
639
5c144d81 640 tmps = SvPV_const(sv, len);
4608196e 641 ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, NULL, MARK+1, (SP-MARK));
a567e93b
NIS
642 SP = ORIGMARK;
643 if (ok)
3280af22
NIS
644 PUSHi( (I32)PL_forkprocess );
645 else if (PL_forkprocess == 0) /* we are a new child */
a0d0e21e
LW
646 PUSHi(0);
647 else
648 RETPUSHUNDEF;
649 RETURN;
650}
651
652PP(pp_close)
653{
27da23d5 654 dVAR; dSP;
30901a8a
FC
655 GV * const gv =
656 MAXARG == 0 || (!TOPs && !POPs) ? PL_defoutgv : MUTABLE_GV(POPs);
1d603a67 657
2addaaf3
NC
658 if (MAXARG == 0)
659 EXTEND(SP, 1);
660
a79db61d
AL
661 if (gv) {
662 IO * const io = GvIO(gv);
663 if (io) {
a5e1d062 664 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 665 if (mg) {
3e0cb5de 666 return tied_method0(SV_CONST(CLOSE), SP, MUTABLE_SV(io), mg);
a79db61d
AL
667 }
668 }
1d603a67 669 }
54310121 670 PUSHs(boolSV(do_close(gv, TRUE)));
a0d0e21e
LW
671 RETURN;
672}
673
674PP(pp_pipe_op)
675{
a0d0e21e 676#ifdef HAS_PIPE
97aff369 677 dVAR;
9cad6237 678 dSP;
eb578fdb
KW
679 IO *rstio;
680 IO *wstio;
a0d0e21e
LW
681 int fd[2];
682
159b6efe
NC
683 GV * const wgv = MUTABLE_GV(POPs);
684 GV * const rgv = MUTABLE_GV(POPs);
a0d0e21e
LW
685
686 if (!rgv || !wgv)
687 goto badexit;
688
6e592b3a 689 if (!isGV_with_GP(rgv) || !isGV_with_GP(wgv))
cea2e8a9 690 DIE(aTHX_ PL_no_usym, "filehandle");
a0d0e21e
LW
691 rstio = GvIOn(rgv);
692 wstio = GvIOn(wgv);
693
694 if (IoIFP(rstio))
695 do_close(rgv, FALSE);
696 if (IoIFP(wstio))
697 do_close(wgv, FALSE);
698
6ad3d225 699 if (PerlProc_pipe(fd) < 0)
a0d0e21e
LW
700 goto badexit;
701
460c8493
IZ
702 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
703 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
b5ac89c3 704 IoOFP(rstio) = IoIFP(rstio);
a0d0e21e 705 IoIFP(wstio) = IoOFP(wstio);
50952442
JH
706 IoTYPE(rstio) = IoTYPE_RDONLY;
707 IoTYPE(wstio) = IoTYPE_WRONLY;
a0d0e21e
LW
708
709 if (!IoIFP(rstio) || !IoOFP(wstio)) {
a79db61d
AL
710 if (IoIFP(rstio))
711 PerlIO_close(IoIFP(rstio));
712 else
713 PerlLIO_close(fd[0]);
714 if (IoOFP(wstio))
715 PerlIO_close(IoOFP(wstio));
716 else
717 PerlLIO_close(fd[1]);
a0d0e21e
LW
718 goto badexit;
719 }
4771b018
GS
720#if defined(HAS_FCNTL) && defined(F_SETFD)
721 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
722 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
723#endif
a0d0e21e
LW
724 RETPUSHYES;
725
726badexit:
727 RETPUSHUNDEF;
728#else
cea2e8a9 729 DIE(aTHX_ PL_no_func, "pipe");
a0d0e21e
LW
730#endif
731}
732
733PP(pp_fileno)
734{
27da23d5 735 dVAR; dSP; dTARGET;
a0d0e21e
LW
736 GV *gv;
737 IO *io;
760ac839 738 PerlIO *fp;
a5e1d062 739 const MAGIC *mg;
4592e6ca 740
a0d0e21e
LW
741 if (MAXARG < 1)
742 RETPUSHUNDEF;
159b6efe 743 gv = MUTABLE_GV(POPs);
9c9f25b8 744 io = GvIO(gv);
4592e6ca 745
9c9f25b8 746 if (io
ad64d0ec 747 && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar)))
5b468f54 748 {
3e0cb5de 749 return tied_method0(SV_CONST(FILENO), SP, MUTABLE_SV(io), mg);
4592e6ca
NIS
750 }
751
9c9f25b8 752 if (!io || !(fp = IoIFP(io))) {
c289d2f7
JH
753 /* Can't do this because people seem to do things like
754 defined(fileno($foo)) to check whether $foo is a valid fh.
51087808
NC
755
756 report_evil_fh(gv);
c289d2f7 757 */
a0d0e21e 758 RETPUSHUNDEF;
c289d2f7
JH
759 }
760
760ac839 761 PUSHi(PerlIO_fileno(fp));
a0d0e21e
LW
762 RETURN;
763}
764
765PP(pp_umask)
766{
97aff369 767 dVAR;
27da23d5 768 dSP;
d7e492a4 769#ifdef HAS_UMASK
27da23d5 770 dTARGET;
761237fe 771 Mode_t anum;
a0d0e21e 772
58536d15 773 if (MAXARG < 1 || (!TOPs && !POPs)) {
b0b546b3
GA
774 anum = PerlLIO_umask(022);
775 /* setting it to 022 between the two calls to umask avoids
776 * to have a window where the umask is set to 0 -- meaning
777 * that another thread could create world-writeable files. */
778 if (anum != 022)
779 (void)PerlLIO_umask(anum);
a0d0e21e
LW
780 }
781 else
6ad3d225 782 anum = PerlLIO_umask(POPi);
a0d0e21e
LW
783 TAINT_PROPER("umask");
784 XPUSHi(anum);
785#else
a0288114 786 /* Only DIE if trying to restrict permissions on "user" (self).
eec2d3df
GS
787 * Otherwise it's harmless and more useful to just return undef
788 * since 'group' and 'other' concepts probably don't exist here. */
58536d15 789 if (MAXARG >= 1 && (TOPs||POPs) && (POPi & 0700))
cea2e8a9 790 DIE(aTHX_ "umask not implemented");
6b88bc9c 791 XPUSHs(&PL_sv_undef);
a0d0e21e
LW
792#endif
793 RETURN;
794}
795
796PP(pp_binmode)
797{
27da23d5 798 dVAR; dSP;
a0d0e21e
LW
799 GV *gv;
800 IO *io;
760ac839 801 PerlIO *fp;
a0714e2c 802 SV *discp = NULL;
a0d0e21e
LW
803
804 if (MAXARG < 1)
805 RETPUSHUNDEF;
60382766 806 if (MAXARG > 1) {
16fe6d59 807 discp = POPs;
60382766 808 }
a0d0e21e 809
159b6efe 810 gv = MUTABLE_GV(POPs);
9c9f25b8 811 io = GvIO(gv);
4592e6ca 812
9c9f25b8 813 if (io) {
a5e1d062 814 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 815 if (mg) {
bc0c81ca
NC
816 /* This takes advantage of the implementation of the varargs
817 function, which I don't think that the optimiser will be able to
818 figure out. Although, as it's a static function, in theory it
819 could. */
3e0cb5de 820 return Perl_tied_method(aTHX_ SV_CONST(BINMODE), SP, MUTABLE_SV(io), mg,
d682515d
NC
821 G_SCALAR|TIED_METHOD_MORTALIZE_NOT_NEEDED,
822 discp ? 1 : 0, discp);
a79db61d 823 }
4592e6ca 824 }
a0d0e21e 825
9c9f25b8 826 if (!io || !(fp = IoIFP(io))) {
51087808 827 report_evil_fh(gv);
b5fe5ca2 828 SETERRNO(EBADF,RMS_IFI);
50f846a7
SC
829 RETPUSHUNDEF;
830 }
a0d0e21e 831
40d98b49 832 PUTBACK;
f0a78170 833 {
a79b25b7
VP
834 STRLEN len = 0;
835 const char *d = NULL;
836 int mode;
837 if (discp)
838 d = SvPV_const(discp, len);
839 mode = mode_from_discipline(d, len);
f0a78170
NC
840 if (PerlIO_binmode(aTHX_ fp, IoTYPE(io), mode, d)) {
841 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
842 if (!PerlIO_binmode(aTHX_ IoOFP(io), IoTYPE(io), mode, d)) {
843 SPAGAIN;
844 RETPUSHUNDEF;
845 }
846 }
847 SPAGAIN;
848 RETPUSHYES;
849 }
850 else {
851 SPAGAIN;
852 RETPUSHUNDEF;
38af81ff 853 }
40d98b49 854 }
a0d0e21e
LW
855}
856
857PP(pp_tie)
858{
27da23d5 859 dVAR; dSP; dMARK;
a0d0e21e 860 HV* stash;
07822e36 861 GV *gv = NULL;
a0d0e21e 862 SV *sv;
1df70142 863 const I32 markoff = MARK - PL_stack_base;
e1ec3a88 864 const char *methname;
14befaf4 865 int how = PERL_MAGIC_tied;
e336de0d 866 U32 items;
c4420975 867 SV *varsv = *++MARK;
a0d0e21e 868
6b05c17a
NIS
869 switch(SvTYPE(varsv)) {
870 case SVt_PVHV:
aec0c0cc
FC
871 {
872 HE *entry;
6b05c17a 873 methname = "TIEHASH";
aec0c0cc
FC
874 if (HvLAZYDEL(varsv) && (entry = HvEITER((HV *)varsv))) {
875 HvLAZYDEL_off(varsv);
876 hv_free_ent((HV *)varsv, entry);
877 }
85fbaab2 878 HvEITER_set(MUTABLE_HV(varsv), 0);
6b05c17a 879 break;
aec0c0cc 880 }
6b05c17a
NIS
881 case SVt_PVAV:
882 methname = "TIEARRAY";
ce65bc73
FC
883 if (!AvREAL(varsv)) {
884 if (!AvREIFY(varsv))
885 Perl_croak(aTHX_ "Cannot tie unreifiable array");
886 av_clear((AV *)varsv);
887 AvREIFY_off(varsv);
888 AvREAL_on(varsv);
889 }
6b05c17a
NIS
890 break;
891 case SVt_PVGV:
13be902c 892 case SVt_PVLV:
8bb5f786 893 if (isGV_with_GP(varsv) && !SvFAKE(varsv)) {
6e592b3a
BM
894 methname = "TIEHANDLE";
895 how = PERL_MAGIC_tiedscalar;
896 /* For tied filehandles, we apply tiedscalar magic to the IO
897 slot of the GP rather than the GV itself. AMS 20010812 */
898 if (!GvIOp(varsv))
899 GvIOp(varsv) = newIO();
ad64d0ec 900 varsv = MUTABLE_SV(GvIOp(varsv));
6e592b3a
BM
901 break;
902 }
13733cde
FC
903 if (SvTYPE(varsv) == SVt_PVLV && LvTYPE(varsv) == 'y') {
904 vivify_defelem(varsv);
905 varsv = LvTARG(varsv);
906 }
6e592b3a 907 /* FALL THROUGH */
6b05c17a
NIS
908 default:
909 methname = "TIESCALAR";
14befaf4 910 how = PERL_MAGIC_tiedscalar;
6b05c17a
NIS
911 break;
912 }
e336de0d 913 items = SP - MARK++;
a91d1d42 914 if (sv_isobject(*MARK)) { /* Calls GET magic. */
d343c3ef 915 ENTER_with_name("call_TIE");
e788e7d3 916 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 917 PUSHMARK(SP);
eb160463 918 EXTEND(SP,(I32)items);
e336de0d
GS
919 while (items--)
920 PUSHs(*MARK++);
921 PUTBACK;
864dbfa3 922 call_method(methname, G_SCALAR);
301e8125 923 }
6b05c17a 924 else {
086d2913
NC
925 /* Can't use call_method here, else this: fileno FOO; tie @a, "FOO"
926 * will attempt to invoke IO::File::TIEARRAY, with (best case) the
927 * wrong error message, and worse case, supreme action at a distance.
928 * (Sorry obfuscation writers. You're not going to be given this one.)
6b05c17a 929 */
4886938f
BF
930 stash = gv_stashsv(*MARK, 0);
931 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
35c1215d 932 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
a91d1d42 933 methname, SVfARG(SvOK(*MARK) ? *MARK : &PL_sv_no));
6b05c17a 934 }
d343c3ef 935 ENTER_with_name("call_TIE");
e788e7d3 936 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 937 PUSHMARK(SP);
eb160463 938 EXTEND(SP,(I32)items);
e336de0d
GS
939 while (items--)
940 PUSHs(*MARK++);
941 PUTBACK;
ad64d0ec 942 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
6b05c17a 943 }
a0d0e21e
LW
944 SPAGAIN;
945
946 sv = TOPs;
d3acc0f7 947 POPSTACK;
a0d0e21e 948 if (sv_isobject(sv)) {
33c27489 949 sv_unmagic(varsv, how);
ae21d580 950 /* Croak if a self-tie on an aggregate is attempted. */
b881518d 951 if (varsv == SvRV(sv) &&
d87ebaca
YST
952 (SvTYPE(varsv) == SVt_PVAV ||
953 SvTYPE(varsv) == SVt_PVHV))
ae21d580
JH
954 Perl_croak(aTHX_
955 "Self-ties of arrays and hashes are not supported");
a0714e2c 956 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
a0d0e21e 957 }
d343c3ef 958 LEAVE_with_name("call_TIE");
3280af22 959 SP = PL_stack_base + markoff;
a0d0e21e
LW
960 PUSHs(sv);
961 RETURN;
962}
963
964PP(pp_untie)
965{
27da23d5 966 dVAR; dSP;
5b468f54 967 MAGIC *mg;
33c27489 968 SV *sv = POPs;
1df70142 969 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 970 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
55497cff 971
ca0d4ed9 972 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
5b468f54
AMS
973 RETPUSHYES;
974
13733cde
FC
975 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y' &&
976 !(sv = defelem_target(sv, NULL))) RETPUSHUNDEF;
977
65eba18f 978 if ((mg = SvTIED_mg(sv, how))) {
1b6737cc 979 SV * const obj = SvRV(SvTIED_obj(sv, mg));
fa2b88e0 980 if (obj) {
c4420975 981 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
0bd48802 982 CV *cv;
c4420975 983 if (gv && isGV(gv) && (cv = GvCV(gv))) {
fa2b88e0 984 PUSHMARK(SP);
c33ef3ac 985 PUSHs(SvTIED_obj(MUTABLE_SV(gv), mg));
6e449a3a 986 mXPUSHi(SvREFCNT(obj) - 1);
fa2b88e0 987 PUTBACK;
d343c3ef 988 ENTER_with_name("call_UNTIE");
ad64d0ec 989 call_sv(MUTABLE_SV(cv), G_VOID);
d343c3ef 990 LEAVE_with_name("call_UNTIE");
fa2b88e0
JS
991 SPAGAIN;
992 }
a2a5de95
NC
993 else if (mg && SvREFCNT(obj) > 1) {
994 Perl_ck_warner(aTHX_ packWARN(WARN_UNTIE),
995 "untie attempted while %"UVuf" inner references still exist",
996 (UV)SvREFCNT(obj) - 1 ) ;
c4420975 997 }
cbdc8872
PP
998 }
999 }
38193a09 1000 sv_unmagic(sv, how) ;
55497cff 1001 RETPUSHYES;
a0d0e21e
LW
1002}
1003
c07a80fd
PP
1004PP(pp_tied)
1005{
97aff369 1006 dVAR;
39644a26 1007 dSP;
1b6737cc 1008 const MAGIC *mg;
33c27489 1009 SV *sv = POPs;
1df70142 1010 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 1011 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
5b468f54 1012
4be76e1f 1013 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
5b468f54 1014 RETPUSHUNDEF;
c07a80fd 1015
13733cde
FC
1016 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y' &&
1017 !(sv = defelem_target(sv, NULL))) RETPUSHUNDEF;
1018
155aba94 1019 if ((mg = SvTIED_mg(sv, how))) {
dc456155 1020 PUSHs(SvTIED_obj(sv, mg));
33c27489 1021 RETURN;
c07a80fd 1022 }
c07a80fd
PP
1023 RETPUSHUNDEF;
1024}
1025
a0d0e21e
LW
1026PP(pp_dbmopen)
1027{
27da23d5 1028 dVAR; dSP;
a0d0e21e
LW
1029 dPOPPOPssrl;
1030 HV* stash;
07822e36 1031 GV *gv = NULL;
a0d0e21e 1032
85fbaab2 1033 HV * const hv = MUTABLE_HV(POPs);
84bafc02 1034 SV * const sv = newSVpvs_flags("AnyDBM_File", SVs_TEMP);
da51bb9b 1035 stash = gv_stashsv(sv, 0);
8ebc5c01 1036 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
a0d0e21e 1037 PUTBACK;
864dbfa3 1038 require_pv("AnyDBM_File.pm");
a0d0e21e 1039 SPAGAIN;
eff494dd 1040 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH")))
cea2e8a9 1041 DIE(aTHX_ "No dbm on this machine");
a0d0e21e
LW
1042 }
1043
57d3b86d 1044 ENTER;
924508f0 1045 PUSHMARK(SP);
6b05c17a 1046
924508f0 1047 EXTEND(SP, 5);
a0d0e21e
LW
1048 PUSHs(sv);
1049 PUSHs(left);
1050 if (SvIV(right))
6e449a3a 1051 mPUSHu(O_RDWR|O_CREAT);
a0d0e21e 1052 else
480e0d3c 1053 {
6e449a3a 1054 mPUSHu(O_RDWR);
480e0d3c
FC
1055 if (!SvOK(right)) right = &PL_sv_no;
1056 }
a0d0e21e 1057 PUSHs(right);
57d3b86d 1058 PUTBACK;
ad64d0ec 1059 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
a0d0e21e
LW
1060 SPAGAIN;
1061
1062 if (!sv_isobject(TOPs)) {
924508f0
GS
1063 SP--;
1064 PUSHMARK(SP);
a0d0e21e
LW
1065 PUSHs(sv);
1066 PUSHs(left);
6e449a3a 1067 mPUSHu(O_RDONLY);
a0d0e21e 1068 PUSHs(right);
a0d0e21e 1069 PUTBACK;
ad64d0ec 1070 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
a0d0e21e
LW
1071 SPAGAIN;
1072 }
1073
6b05c17a 1074 if (sv_isobject(TOPs)) {
ad64d0ec
NC
1075 sv_unmagic(MUTABLE_SV(hv), PERL_MAGIC_tied);
1076 sv_magic(MUTABLE_SV(hv), TOPs, PERL_MAGIC_tied, NULL, 0);
6b05c17a 1077 }
a0d0e21e
LW
1078 LEAVE;
1079 RETURN;
1080}
1081
a0d0e21e
LW
1082PP(pp_sselect)
1083{
a0d0e21e 1084#ifdef HAS_SELECT
97aff369 1085 dVAR; dSP; dTARGET;
eb578fdb
KW
1086 I32 i;
1087 I32 j;
1088 char *s;
1089 SV *sv;
65202027 1090 NV value;
a0d0e21e
LW
1091 I32 maxlen = 0;
1092 I32 nfound;
1093 struct timeval timebuf;
1094 struct timeval *tbuf = &timebuf;
1095 I32 growsize;
1096 char *fd_sets[4];
1097#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1098 I32 masksize;
1099 I32 offset;
1100 I32 k;
1101
1102# if BYTEORDER & 0xf0000
1103# define ORDERBYTE (0x88888888 - BYTEORDER)
1104# else
1105# define ORDERBYTE (0x4444 - BYTEORDER)
1106# endif
1107
1108#endif
1109
1110 SP -= 4;
1111 for (i = 1; i <= 3; i++) {
c4420975 1112 SV * const sv = SP[i];
9d6d5a79 1113 SvGETMAGIC(sv);
15547071
GA
1114 if (!SvOK(sv))
1115 continue;
ba3062ae
FC
1116 if (SvREADONLY(sv)) {
1117 if (!(SvPOK(sv) && SvCUR(sv) == 0))
cb077ed2 1118 Perl_croak_no_modify();
ba3062ae
FC
1119 }
1120 else if (SvIsCOW(sv)) sv_force_normal_flags(sv, 0);
4ef2275c 1121 if (!SvPOK(sv)) {
9d6d5a79
FC
1122 if (!SvPOKp(sv))
1123 Perl_ck_warner(aTHX_ packWARN(WARN_MISC),
1124 "Non-string passed as bitmask");
1125 SvPV_force_nomg_nolen(sv); /* force string conversion */
4ef2275c 1126 }
729c079f 1127 j = SvCUR(sv);
a0d0e21e
LW
1128 if (maxlen < j)
1129 maxlen = j;
1130 }
1131
5ff3f7a4 1132/* little endians can use vecs directly */
e366b469 1133#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
5ff3f7a4 1134# ifdef NFDBITS
a0d0e21e 1135
5ff3f7a4
GS
1136# ifndef NBBY
1137# define NBBY 8
1138# endif
a0d0e21e
LW
1139
1140 masksize = NFDBITS / NBBY;
5ff3f7a4 1141# else
a0d0e21e 1142 masksize = sizeof(long); /* documented int, everyone seems to use long */
5ff3f7a4 1143# endif
a0d0e21e
LW
1144 Zero(&fd_sets[0], 4, char*);
1145#endif
1146
ad517f75
MHM
1147# if SELECT_MIN_BITS == 1
1148 growsize = sizeof(fd_set);
1149# else
1150# if defined(__GLIBC__) && defined(__FD_SETSIZE)
1151# undef SELECT_MIN_BITS
1152# define SELECT_MIN_BITS __FD_SETSIZE
1153# endif
e366b469
PG
1154 /* If SELECT_MIN_BITS is greater than one we most probably will want
1155 * to align the sizes with SELECT_MIN_BITS/8 because for example
1156 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
1157 * UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
1158 * on (sets/tests/clears bits) is 32 bits. */
1159 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
e366b469
PG
1160# endif
1161
a0d0e21e 1162 sv = SP[4];
90eaaf02 1163 SvGETMAGIC(sv);
a0d0e21e 1164 if (SvOK(sv)) {
90eaaf02 1165 value = SvNV_nomg(sv);
a0d0e21e
LW
1166 if (value < 0.0)
1167 value = 0.0;
1168 timebuf.tv_sec = (long)value;
65202027 1169 value -= (NV)timebuf.tv_sec;
a0d0e21e
LW
1170 timebuf.tv_usec = (long)(value * 1000000.0);
1171 }
1172 else
4608196e 1173 tbuf = NULL;
a0d0e21e
LW
1174
1175 for (i = 1; i <= 3; i++) {
1176 sv = SP[i];
15547071 1177 if (!SvOK(sv) || SvCUR(sv) == 0) {
a0d0e21e
LW
1178 fd_sets[i] = 0;
1179 continue;
1180 }
4ef2275c 1181 assert(SvPOK(sv));
a0d0e21e
LW
1182 j = SvLEN(sv);
1183 if (j < growsize) {
1184 Sv_Grow(sv, growsize);
a0d0e21e 1185 }
c07a80fd
PP
1186 j = SvCUR(sv);
1187 s = SvPVX(sv) + j;
1188 while (++j <= growsize) {
1189 *s++ = '\0';
1190 }
1191
a0d0e21e
LW
1192#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1193 s = SvPVX(sv);
a02a5408 1194 Newx(fd_sets[i], growsize, char);
a0d0e21e
LW
1195 for (offset = 0; offset < growsize; offset += masksize) {
1196 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1197 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1198 }
1199#else
1200 fd_sets[i] = SvPVX(sv);
1201#endif
1202 }
1203
dc4c69d9
JH
1204#ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1205 /* Can't make just the (void*) conditional because that would be
1206 * cpp #if within cpp macro, and not all compilers like that. */
1207 nfound = PerlSock_select(
1208 maxlen * 8,
1209 (Select_fd_set_t) fd_sets[1],
1210 (Select_fd_set_t) fd_sets[2],
1211 (Select_fd_set_t) fd_sets[3],
1212 (void*) tbuf); /* Workaround for compiler bug. */
1213#else
6ad3d225 1214 nfound = PerlSock_select(
a0d0e21e
LW
1215 maxlen * 8,
1216 (Select_fd_set_t) fd_sets[1],
1217 (Select_fd_set_t) fd_sets[2],
1218 (Select_fd_set_t) fd_sets[3],
1219 tbuf);
dc4c69d9 1220#endif
a0d0e21e
LW
1221 for (i = 1; i <= 3; i++) {
1222 if (fd_sets[i]) {
1223 sv = SP[i];
1224#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1225 s = SvPVX(sv);
1226 for (offset = 0; offset < growsize; offset += masksize) {
1227 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1228 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1229 }
1230 Safefree(fd_sets[i]);
1231#endif
1232 SvSETMAGIC(sv);
1233 }
1234 }
1235
4189264e 1236 PUSHi(nfound);
a0d0e21e 1237 if (GIMME == G_ARRAY && tbuf) {
65202027
DS
1238 value = (NV)(timebuf.tv_sec) +
1239 (NV)(timebuf.tv_usec) / 1000000.0;
6e449a3a 1240 mPUSHn(value);
a0d0e21e
LW
1241 }
1242 RETURN;
1243#else
cea2e8a9 1244 DIE(aTHX_ "select not implemented");
a0d0e21e
LW
1245#endif
1246}
1247
8226a3d7
NC
1248/*
1249=for apidoc setdefout
1250
1251Sets PL_defoutgv, the default file handle for output, to the passed in
1252typeglob. As PL_defoutgv "owns" a reference on its typeglob, the reference
1253count of the passed in typeglob is increased by one, and the reference count
1254of the typeglob that PL_defoutgv points to is decreased by one.
1255
1256=cut
1257*/
1258
4633a7c4 1259void
864dbfa3 1260Perl_setdefout(pTHX_ GV *gv)
4633a7c4 1261{
97aff369 1262 dVAR;
9a9bb270
FC
1263 PERL_ARGS_ASSERT_SETDEFOUT;
1264 SvREFCNT_inc_simple_void_NN(gv);
ef8d46e8 1265 SvREFCNT_dec(PL_defoutgv);
3280af22 1266 PL_defoutgv = gv;
4633a7c4
LW
1267}
1268
a0d0e21e
LW
1269PP(pp_select)
1270{
97aff369 1271 dVAR; dSP; dTARGET;
4633a7c4 1272 HV *hv;
159b6efe 1273 GV * const newdefout = (PL_op->op_private > 0) ? (MUTABLE_GV(POPs)) : NULL;
099be4f1 1274 GV * egv = GvEGVx(PL_defoutgv);
0df2568b 1275 GV * const *gvp;
4633a7c4 1276
4633a7c4 1277 if (!egv)
3280af22 1278 egv = PL_defoutgv;
099be4f1 1279 hv = isGV_with_GP(egv) ? GvSTASH(egv) : NULL;
0df2568b 1280 gvp = hv && HvENAME(hv)
204263bc
FC
1281 ? (GV**)hv_fetch(hv, GvNAME(egv), HEK_UTF8(GvNAME_HEK(egv)) ? -GvNAMELEN(egv) : GvNAMELEN(egv), FALSE)
1282 : NULL;
0df2568b 1283 if (gvp && *gvp == egv) {
bd61b366 1284 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
f86702cc 1285 XPUSHTARG;
0df2568b
FC
1286 }
1287 else {
ad64d0ec 1288 mXPUSHs(newRV(MUTABLE_SV(egv)));
4633a7c4
LW
1289 }
1290
1291 if (newdefout) {
ded8aa31
GS
1292 if (!GvIO(newdefout))
1293 gv_IOadd(newdefout);
4633a7c4
LW
1294 setdefout(newdefout);
1295 }
1296
a0d0e21e
LW
1297 RETURN;
1298}
1299
1300PP(pp_getc)
1301{
27da23d5 1302 dVAR; dSP; dTARGET;
30901a8a
FC
1303 GV * const gv =
1304 MAXARG==0 || (!TOPs && !POPs) ? PL_stdingv : MUTABLE_GV(POPs);
9c9f25b8 1305 IO *const io = GvIO(gv);
2ae324a7 1306
ac3697cd
NC
1307 if (MAXARG == 0)
1308 EXTEND(SP, 1);
1309
9c9f25b8 1310 if (io) {
a5e1d062 1311 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1312 if (mg) {
0240605e 1313 const U32 gimme = GIMME_V;
3e0cb5de 1314 Perl_tied_method(aTHX_ SV_CONST(GETC), SP, MUTABLE_SV(io), mg, gimme, 0);
0240605e
NC
1315 if (gimme == G_SCALAR) {
1316 SPAGAIN;
a79db61d 1317 SvSetMagicSV_nosteal(TARG, TOPs);
0240605e
NC
1318 }
1319 return NORMAL;
a79db61d 1320 }
2ae324a7 1321 }
90133b69 1322 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
51087808 1323 if (!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
831e4cc3 1324 report_evil_fh(gv);
b5fe5ca2 1325 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1326 RETPUSHUNDEF;
90133b69 1327 }
bbce6d69 1328 TAINT;
76f68e9b 1329 sv_setpvs(TARG, " ");
9bc64814 1330 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
7d59b7e4
NIS
1331 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1332 /* Find out how many bytes the char needs */
aa07b2f6 1333 Size_t len = UTF8SKIP(SvPVX_const(TARG));
7d59b7e4
NIS
1334 if (len > 1) {
1335 SvGROW(TARG,len+1);
1336 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1337 SvCUR_set(TARG,1+len);
1338 }
1339 SvUTF8_on(TARG);
1340 }
a0d0e21e
LW
1341 PUSHTARG;
1342 RETURN;
1343}
1344
76e3520e 1345STATIC OP *
cea2e8a9 1346S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
a0d0e21e 1347{
27da23d5 1348 dVAR;
eb578fdb 1349 PERL_CONTEXT *cx;
f54cb97a 1350 const I32 gimme = GIMME_V;
a0d0e21e 1351
7918f24d
NC
1352 PERL_ARGS_ASSERT_DOFORM;
1353
7b190374
NC
1354 if (cv && CvCLONE(cv))
1355 cv = MUTABLE_CV(sv_2mortal(MUTABLE_SV(cv_clone(cv))));
1356
a0d0e21e
LW
1357 ENTER;
1358 SAVETMPS;
1359
146174a9 1360 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
10067d9a 1361 PUSHFORMAT(cx, retop);
f32c7e86
FC
1362 if (CvDEPTH(cv) >= 2) {
1363 PERL_STACK_OVERFLOW_CHECK();
1364 pad_push(CvPADLIST(cv), CvDEPTH(cv));
1365 }
fd617465 1366 SAVECOMPPAD();
f32c7e86 1367 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), CvDEPTH(cv));
a0d0e21e 1368
4633a7c4 1369 setdefout(gv); /* locally select filehandle so $% et al work */
a0d0e21e
LW
1370 return CvSTART(cv);
1371}
1372
1373PP(pp_enterwrite)
1374{
97aff369 1375 dVAR;
39644a26 1376 dSP;
eb578fdb
KW
1377 GV *gv;
1378 IO *io;
a0d0e21e 1379 GV *fgv;
07822e36
JH
1380 CV *cv = NULL;
1381 SV *tmpsv = NULL;
a0d0e21e 1382
2addaaf3 1383 if (MAXARG == 0) {
3280af22 1384 gv = PL_defoutgv;
2addaaf3
NC
1385 EXTEND(SP, 1);
1386 }
a0d0e21e 1387 else {
159b6efe 1388 gv = MUTABLE_GV(POPs);
a0d0e21e 1389 if (!gv)
3280af22 1390 gv = PL_defoutgv;
a0d0e21e 1391 }
a0d0e21e
LW
1392 io = GvIO(gv);
1393 if (!io) {
1394 RETPUSHNO;
1395 }
1396 if (IoFMT_GV(io))
1397 fgv = IoFMT_GV(io);
1398 else
1399 fgv = gv;
1400
2d1ebc9b 1401 assert(fgv);
a79db61d 1402
a0d0e21e 1403 cv = GvFORM(fgv);
a0d0e21e 1404 if (!cv) {
10edeb5d 1405 tmpsv = sv_newmortal();
f4a7049d 1406 gv_efullname4(tmpsv, fgv, NULL, FALSE);
2d1ebc9b 1407 DIE(aTHX_ "Undefined format \"%"SVf"\" called", SVfARG(tmpsv));
a0d0e21e 1408 }
44a8e56a 1409 IoFLAGS(io) &= ~IOf_DIDTOP;
8e4ecf23 1410 RETURNOP(doform(cv,gv,PL_op->op_next));
a0d0e21e
LW
1411}
1412
1413PP(pp_leavewrite)
1414{
27da23d5 1415 dVAR; dSP;
f9c764c5 1416 GV * const gv = cxstack[cxstack_ix].blk_format.gv;
eb578fdb 1417 IO * const io = GvIOp(gv);
8b8cacda 1418 PerlIO *ofp;
760ac839 1419 PerlIO *fp;
8772537c
AL
1420 SV **newsp;
1421 I32 gimme;
eb578fdb 1422 PERL_CONTEXT *cx;
8f89e5a9 1423 OP *retop;
a0d0e21e 1424
8b8cacda 1425 if (!io || !(ofp = IoOFP(io)))
1426 goto forget_top;
1427
760ac839 1428 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1429 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
8b8cacda 1430
3280af22
NIS
1431 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1432 PL_formtarget != PL_toptarget)
a0d0e21e 1433 {
4633a7c4
LW
1434 GV *fgv;
1435 CV *cv;
a0d0e21e
LW
1436 if (!IoTOP_GV(io)) {
1437 GV *topgv;
a0d0e21e
LW
1438
1439 if (!IoTOP_NAME(io)) {
1b6737cc 1440 SV *topname;
a0d0e21e
LW
1441 if (!IoFMT_NAME(io))
1442 IoFMT_NAME(io) = savepv(GvNAME(gv));
d0c0e7dd
FC
1443 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%"HEKf"_TOP",
1444 HEKfARG(GvNAME_HEK(gv))));
f776e3cd 1445 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
748a9306 1446 if ((topgv && GvFORM(topgv)) ||
fafc274c 1447 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
2e0de35c 1448 IoTOP_NAME(io) = savesvpv(topname);
a0d0e21e 1449 else
89529cee 1450 IoTOP_NAME(io) = savepvs("top");
a0d0e21e 1451 }
f776e3cd 1452 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
a0d0e21e 1453 if (!topgv || !GvFORM(topgv)) {
b929a54b 1454 IoLINES_LEFT(io) = IoPAGE_LEN(io);
a0d0e21e
LW
1455 goto forget_top;
1456 }
1457 IoTOP_GV(io) = topgv;
1458 }
748a9306
LW
1459 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1460 I32 lines = IoLINES_LEFT(io);
504618e9 1461 const char *s = SvPVX_const(PL_formtarget);
8e07c86e
AD
1462 if (lines <= 0) /* Yow, header didn't even fit!!! */
1463 goto forget_top;
748a9306
LW
1464 while (lines-- > 0) {
1465 s = strchr(s, '\n');
1466 if (!s)
1467 break;
1468 s++;
1469 }
1470 if (s) {
f54cb97a 1471 const STRLEN save = SvCUR(PL_formtarget);
aa07b2f6 1472 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
d75029d0
NIS
1473 do_print(PL_formtarget, ofp);
1474 SvCUR_set(PL_formtarget, save);
3280af22
NIS
1475 sv_chop(PL_formtarget, s);
1476 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW
1477 }
1478 }
a0d0e21e 1479 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
f6dfc736 1480 do_print(GvSV(gv_fetchpvs("\f", GV_ADD, SVt_PV)), ofp);
a0d0e21e
LW
1481 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1482 IoPAGE(io)++;
3280af22 1483 PL_formtarget = PL_toptarget;
748a9306 1484 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4 1485 fgv = IoTOP_GV(io);
636013b3 1486 assert(fgv); /* IoTOP_GV(io) should have been set above */
4633a7c4 1487 cv = GvFORM(fgv);
1df70142
AL
1488 if (!cv) {
1489 SV * const sv = sv_newmortal();
bd61b366 1490 gv_efullname4(sv, fgv, NULL, FALSE);
44b7e78a 1491 DIE(aTHX_ "Undefined top format \"%"SVf"\" called", SVfARG(sv));
4633a7c4 1492 }
43cd5cb7 1493 return doform(cv, gv, PL_op);
a0d0e21e
LW
1494 }
1495
1496 forget_top:
3280af22 1497 POPBLOCK(cx,PL_curpm);
8f89e5a9 1498 retop = cx->blk_sub.retop;
25375124 1499 POPFORMAT(cx);
43cd5cb7 1500 SP = newsp; /* ignore retval of formline */
a0d0e21e
LW
1501 LEAVE;
1502
c782dc1d
FC
1503 if (!io || !(fp = IoOFP(io))) {
1504 if (io && IoIFP(io))
7716c5c5 1505 report_wrongway_fh(gv, '<');
c521cf7c 1506 else
7716c5c5 1507 report_evil_fh(gv);
3280af22 1508 PUSHs(&PL_sv_no);
a0d0e21e
LW
1509 }
1510 else {
3280af22 1511 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
a2a5de95 1512 Perl_ck_warner(aTHX_ packWARN(WARN_IO), "page overflow");
a0d0e21e 1513 }
d75029d0 1514 if (!do_print(PL_formtarget, fp))
3280af22 1515 PUSHs(&PL_sv_no);
a0d0e21e 1516 else {
3280af22
NIS
1517 FmLINES(PL_formtarget) = 0;
1518 SvCUR_set(PL_formtarget, 0);
1519 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1520 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1521 (void)PerlIO_flush(fp);
3280af22 1522 PUSHs(&PL_sv_yes);
a0d0e21e
LW
1523 }
1524 }
3280af22 1525 PL_formtarget = PL_bodytarget;
29033a8a 1526 PERL_UNUSED_VAR(gimme);
8e4ecf23 1527 RETURNOP(retop);
a0d0e21e
LW
1528}
1529
1530PP(pp_prtf)
1531{
27da23d5 1532 dVAR; dSP; dMARK; dORIGMARK;
760ac839 1533 PerlIO *fp;
a0d0e21e 1534
159b6efe
NC
1535 GV * const gv
1536 = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv;
9c9f25b8 1537 IO *const io = GvIO(gv);
46fc3d4c 1538
87385d72
FC
1539 /* Treat empty list as "" */
1540 if (MARK == SP) XPUSHs(&PL_sv_no);
1541
9c9f25b8 1542 if (io) {
a5e1d062 1543 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d
AL
1544 if (mg) {
1545 if (MARK == ORIGMARK) {
1546 MEXTEND(SP, 1);
1547 ++MARK;
1548 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1549 ++SP;
1550 }
3e0cb5de 1551 return Perl_tied_method(aTHX_ SV_CONST(PRINTF), mark - 1, MUTABLE_SV(io),
d682515d
NC
1552 mg,
1553 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1554 sp - mark);
a79db61d 1555 }
46fc3d4c
PP
1556 }
1557
9c9f25b8 1558 if (!io) {
51087808 1559 report_evil_fh(gv);
93189314 1560 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW
1561 goto just_say_no;
1562 }
1563 else if (!(fp = IoOFP(io))) {
7716c5c5
NC
1564 if (IoIFP(io))
1565 report_wrongway_fh(gv, '<');
1566 else if (ckWARN(WARN_CLOSED))
1567 report_evil_fh(gv);
93189314 1568 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
a0d0e21e
LW
1569 goto just_say_no;
1570 }
1571 else {
c7bd8b84 1572 SV *sv = sv_newmortal();
a0d0e21e
LW
1573 do_sprintf(sv, SP - MARK, MARK + 1);
1574 if (!do_print(sv, fp))
1575 goto just_say_no;
1576
1577 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1578 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW
1579 goto just_say_no;
1580 }
a0d0e21e 1581 SP = ORIGMARK;
3280af22 1582 PUSHs(&PL_sv_yes);
a0d0e21e
LW
1583 RETURN;
1584
1585 just_say_no:
a0d0e21e 1586 SP = ORIGMARK;
3280af22 1587 PUSHs(&PL_sv_undef);
a0d0e21e
LW
1588 RETURN;
1589}
1590
c07a80fd
PP
1591PP(pp_sysopen)
1592{
97aff369 1593 dVAR;
39644a26 1594 dSP;
de5e49e1 1595 const int perm = (MAXARG > 3 && (TOPs || POPs)) ? POPi : 0666;
1df70142 1596 const int mode = POPi;
1b6737cc 1597 SV * const sv = POPs;
159b6efe 1598 GV * const gv = MUTABLE_GV(POPs);
1b6737cc 1599 STRLEN len;
c07a80fd 1600
4592e6ca 1601 /* Need TIEHANDLE method ? */
1b6737cc 1602 const char * const tmps = SvPV_const(sv, len);
e62f0680 1603 /* FIXME? do_open should do const */
4608196e 1604 if (do_open(gv, tmps, len, TRUE, mode, perm, NULL)) {
c07a80fd 1605 IoLINES(GvIOp(gv)) = 0;
3280af22 1606 PUSHs(&PL_sv_yes);
c07a80fd
PP
1607 }
1608 else {
3280af22 1609 PUSHs(&PL_sv_undef);
c07a80fd
PP
1610 }
1611 RETURN;
1612}
1613
a0d0e21e
LW
1614PP(pp_sysread)
1615{
27da23d5 1616 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
0b423688 1617 SSize_t offset;
a0d0e21e
LW
1618 IO *io;
1619 char *buffer;
0b423688 1620 STRLEN orig_size;
5b54f415 1621 SSize_t length;
eb5c063a 1622 SSize_t count;
748a9306 1623 SV *bufsv;
a0d0e21e 1624 STRLEN blen;
eb5c063a 1625 int fp_utf8;
1dd30107
NC
1626 int buffer_utf8;
1627 SV *read_target;
eb5c063a
NIS
1628 Size_t got = 0;
1629 Size_t wanted;
1d636c13 1630 bool charstart = FALSE;
87330c3c
JH
1631 STRLEN charskip = 0;
1632 STRLEN skip = 0;
a0d0e21e 1633
159b6efe 1634 GV * const gv = MUTABLE_GV(*++MARK);
5b468f54 1635 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1b6737cc 1636 && gv && (io = GvIO(gv)) )
137443ea 1637 {
a5e1d062 1638 const MAGIC *const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1b6737cc 1639 if (mg) {
3e0cb5de 1640 return Perl_tied_method(aTHX_ SV_CONST(READ), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC
1641 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1642 sp - mark);
1b6737cc 1643 }
2ae324a7
PP
1644 }
1645
a0d0e21e
LW
1646 if (!gv)
1647 goto say_undef;
748a9306 1648 bufsv = *++MARK;
ff68c719 1649 if (! SvOK(bufsv))
76f68e9b 1650 sv_setpvs(bufsv, "");
a0d0e21e 1651 length = SvIVx(*++MARK);
4bac9ae4
CS
1652 if (length < 0)
1653 DIE(aTHX_ "Negative length");
748a9306 1654 SETERRNO(0,0);
a0d0e21e
LW
1655 if (MARK < SP)
1656 offset = SvIVx(*++MARK);
1657 else
1658 offset = 0;
1659 io = GvIO(gv);
b5fe5ca2 1660 if (!io || !IoIFP(io)) {
51087808 1661 report_evil_fh(gv);
b5fe5ca2 1662 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1663 goto say_undef;
b5fe5ca2 1664 }
0064a8a9 1665 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
7d59b7e4 1666 buffer = SvPVutf8_force(bufsv, blen);
1e54db1a 1667 /* UTF-8 may not have been set if they are all low bytes */
eb5c063a 1668 SvUTF8_on(bufsv);
9b9d7ce8 1669 buffer_utf8 = 0;
7d59b7e4
NIS
1670 }
1671 else {
1672 buffer = SvPV_force(bufsv, blen);
1dd30107 1673 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
7d59b7e4 1674 }
4bac9ae4 1675 if (DO_UTF8(bufsv)) {
3f914778 1676 blen = sv_len_utf8_nomg(bufsv);
4bac9ae4 1677 }
7d59b7e4 1678
d0965105
JH
1679 charstart = TRUE;
1680 charskip = 0;
87330c3c 1681 skip = 0;
4bac9ae4 1682 wanted = length;
d0965105 1683
a0d0e21e 1684#ifdef HAS_SOCKET
533c011a 1685 if (PL_op->op_type == OP_RECV) {
0b423688 1686 Sock_size_t bufsize;
46fc3d4c 1687 char namebuf[MAXPATHLEN];
b5afd346 1688#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
490ab354
JH
1689 bufsize = sizeof (struct sockaddr_in);
1690#else
46fc3d4c 1691 bufsize = sizeof namebuf;
490ab354 1692#endif
abf95952
IZ
1693#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1694 if (bufsize >= 256)
1695 bufsize = 255;
1696#endif
eb160463 1697 buffer = SvGROW(bufsv, (STRLEN)(length+1));
bbce6d69 1698 /* 'offset' means 'flags' here */
eb5c063a 1699 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
10edeb5d 1700 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1701 if (count < 0)
a0d0e21e 1702 RETPUSHUNDEF;
8eb023a9
DM
1703 /* MSG_TRUNC can give oversized count; quietly lose it */
1704 if (count > length)
1705 count = length;
eb5c063a 1706 SvCUR_set(bufsv, count);
748a9306
LW
1707 *SvEND(bufsv) = '\0';
1708 (void)SvPOK_only(bufsv);
eb5c063a
NIS
1709 if (fp_utf8)
1710 SvUTF8_on(bufsv);
748a9306 1711 SvSETMAGIC(bufsv);
aac0dd9a 1712 /* This should not be marked tainted if the fp is marked clean */
bbce6d69
PP
1713 if (!(IoFLAGS(io) & IOf_UNTAINT))
1714 SvTAINTED_on(bufsv);
a0d0e21e 1715 SP = ORIGMARK;
46fc3d4c 1716 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW
1717 PUSHs(TARG);
1718 RETURN;
1719 }
a0d0e21e 1720#endif
bbce6d69 1721 if (offset < 0) {
0b423688 1722 if (-offset > (SSize_t)blen)
cea2e8a9 1723 DIE(aTHX_ "Offset outside string");
bbce6d69
PP
1724 offset += blen;
1725 }
eb5c063a
NIS
1726 if (DO_UTF8(bufsv)) {
1727 /* convert offset-as-chars to offset-as-bytes */
d5f981bb 1728 if (offset >= (SSize_t)blen)
6960c29a
CH
1729 offset += SvCUR(bufsv) - blen;
1730 else
1731 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
eb5c063a
NIS
1732 }
1733 more_bytes:
0b423688 1734 orig_size = SvCUR(bufsv);
1dd30107
NC
1735 /* Allocating length + offset + 1 isn't perfect in the case of reading
1736 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1737 unduly.
1738 (should be 2 * length + offset + 1, or possibly something longer if
1739 PL_encoding is true) */
eb160463 1740 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
0b423688
TC
1741 if (offset > 0 && offset > (SSize_t)orig_size) { /* Zero any newly allocated space */
1742 Zero(buffer+orig_size, offset-orig_size, char);
cd52b7b2 1743 }
eb5c063a 1744 buffer = buffer + offset;
1dd30107
NC
1745 if (!buffer_utf8) {
1746 read_target = bufsv;
1747 } else {
1748 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1749 concatenate it to the current buffer. */
1750
1751 /* Truncate the existing buffer to the start of where we will be
1752 reading to: */
1753 SvCUR_set(bufsv, offset);
1754
1755 read_target = sv_newmortal();
862a34c6 1756 SvUPGRADE(read_target, SVt_PV);
fe2774ed 1757 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1dd30107 1758 }
eb5c063a 1759
533c011a 1760 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1761#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1762 if (IoTYPE(io) == IoTYPE_SOCKET) {
eb5c063a
NIS
1763 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1764 buffer, length, 0);
a7092146
GS
1765 }
1766 else
1767#endif
1768 {
eb5c063a
NIS
1769 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1770 buffer, length);
a7092146 1771 }
a0d0e21e
LW
1772 }
1773 else
3b02c43c 1774 {
eb5c063a
NIS
1775 count = PerlIO_read(IoIFP(io), buffer, length);
1776 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1777 if (count == 0 && PerlIO_error(IoIFP(io)))
1778 count = -1;
3b02c43c 1779 }
eb5c063a 1780 if (count < 0) {
7716c5c5 1781 if (IoTYPE(io) == IoTYPE_WRONLY)
a5390457 1782 report_wrongway_fh(gv, '>');
a0d0e21e 1783 goto say_undef;
af8c498a 1784 }
aa07b2f6 1785 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1dd30107
NC
1786 *SvEND(read_target) = '\0';
1787 (void)SvPOK_only(read_target);
0064a8a9 1788 if (fp_utf8 && !IN_BYTES) {
eb5c063a 1789 /* Look at utf8 we got back and count the characters */
1df70142 1790 const char *bend = buffer + count;
eb5c063a 1791 while (buffer < bend) {
d0965105
JH
1792 if (charstart) {
1793 skip = UTF8SKIP(buffer);
1794 charskip = 0;
1795 }
1796 if (buffer - charskip + skip > bend) {
eb5c063a
NIS
1797 /* partial character - try for rest of it */
1798 length = skip - (bend-buffer);
aa07b2f6 1799 offset = bend - SvPVX_const(bufsv);
d0965105
JH
1800 charstart = FALSE;
1801 charskip += count;
eb5c063a
NIS
1802 goto more_bytes;
1803 }
1804 else {
1805 got++;
1806 buffer += skip;
d0965105
JH
1807 charstart = TRUE;
1808 charskip = 0;
eb5c063a
NIS
1809 }
1810 }
1811 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1812 provided amount read (count) was what was requested (length)
1813 */
1814 if (got < wanted && count == length) {
d0965105 1815 length = wanted - got;
aa07b2f6 1816 offset = bend - SvPVX_const(bufsv);
eb5c063a
NIS
1817 goto more_bytes;
1818 }
1819 /* return value is character count */
1820 count = got;
1821 SvUTF8_on(bufsv);
1822 }
1dd30107
NC
1823 else if (buffer_utf8) {
1824 /* Let svcatsv upgrade the bytes we read in to utf8.
1825 The buffer is a mortal so will be freed soon. */
1826 sv_catsv_nomg(bufsv, read_target);
1827 }
748a9306 1828 SvSETMAGIC(bufsv);
aac0dd9a 1829 /* This should not be marked tainted if the fp is marked clean */
bbce6d69
PP
1830 if (!(IoFLAGS(io) & IOf_UNTAINT))
1831 SvTAINTED_on(bufsv);
a0d0e21e 1832 SP = ORIGMARK;
eb5c063a 1833 PUSHi(count);
a0d0e21e
LW
1834 RETURN;
1835
1836 say_undef:
1837 SP = ORIGMARK;
1838 RETPUSHUNDEF;
1839}
1840
60504e18 1841PP(pp_syswrite)
a0d0e21e 1842{
27da23d5 1843 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
748a9306 1844 SV *bufsv;
83003860 1845 const char *buffer;
8c99d73e 1846 SSize_t retval;
a0d0e21e 1847 STRLEN blen;
c9cb0f41 1848 STRLEN orig_blen_bytes;
64a1bc8e 1849 const int op_type = PL_op->op_type;
c9cb0f41
NC
1850 bool doing_utf8;
1851 U8 *tmpbuf = NULL;
159b6efe 1852 GV *const gv = MUTABLE_GV(*++MARK);
91472ad4
NC
1853 IO *const io = GvIO(gv);
1854
1855 if (op_type == OP_SYSWRITE && io) {
a5e1d062 1856 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1857 if (mg) {
a79db61d 1858 if (MARK == SP - 1) {
c8834ab7
TC
1859 SV *sv = *SP;
1860 mXPUSHi(sv_len(sv));
a79db61d
AL
1861 PUTBACK;
1862 }
1863
3e0cb5de 1864 return Perl_tied_method(aTHX_ SV_CONST(WRITE), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC
1865 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1866 sp - mark);
64a1bc8e 1867 }
1d603a67 1868 }
a0d0e21e
LW
1869 if (!gv)
1870 goto say_undef;
64a1bc8e 1871
748a9306 1872 bufsv = *++MARK;
64a1bc8e 1873
748a9306 1874 SETERRNO(0,0);
cf167416 1875 if (!io || !IoIFP(io) || IoTYPE(io) == IoTYPE_RDONLY) {
8c99d73e 1876 retval = -1;
51087808
NC
1877 if (io && IoIFP(io))
1878 report_wrongway_fh(gv, '<');
1879 else
1880 report_evil_fh(gv);
b5fe5ca2 1881 SETERRNO(EBADF,RMS_IFI);
7d59b7e4
NIS
1882 goto say_undef;
1883 }
1884
c9cb0f41
NC
1885 /* Do this first to trigger any overloading. */
1886 buffer = SvPV_const(bufsv, blen);
1887 orig_blen_bytes = blen;
1888 doing_utf8 = DO_UTF8(bufsv);
1889
7d59b7e4 1890 if (PerlIO_isutf8(IoIFP(io))) {
6aa2f6a7 1891 if (!SvUTF8(bufsv)) {
c9cb0f41
NC
1892 /* We don't modify the original scalar. */
1893 tmpbuf = bytes_to_utf8((const U8*) buffer, &blen);
1894 buffer = (char *) tmpbuf;
1895 doing_utf8 = TRUE;
1896 }
a0d0e21e 1897 }
c9cb0f41
NC
1898 else if (doing_utf8) {
1899 STRLEN tmplen = blen;
a79db61d 1900 U8 * const result = bytes_from_utf8((const U8*) buffer, &tmplen, &doing_utf8);
c9cb0f41
NC
1901 if (!doing_utf8) {
1902 tmpbuf = result;
1903 buffer = (char *) tmpbuf;
1904 blen = tmplen;
1905 }
1906 else {
1907 assert((char *)result == buffer);
1908 Perl_croak(aTHX_ "Wide character in %s", OP_DESC(PL_op));
1909 }
7d59b7e4
NIS
1910 }
1911
e2712234 1912#ifdef HAS_SOCKET
7627e6d0 1913 if (op_type == OP_SEND) {
e2712234
NC
1914 const int flags = SvIVx(*++MARK);
1915 if (SP > MARK) {
1916 STRLEN mlen;
1917 char * const sockbuf = SvPVx(*++MARK, mlen);
1918 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1919 flags, (struct sockaddr *)sockbuf, mlen);
1920 }
1921 else {
1922 retval
1923 = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, flags);
1924 }
7627e6d0
NC
1925 }
1926 else
e2712234 1927#endif
7627e6d0 1928 {
c9cb0f41
NC
1929 Size_t length = 0; /* This length is in characters. */
1930 STRLEN blen_chars;
7d59b7e4 1931 IV offset;
c9cb0f41
NC
1932
1933 if (doing_utf8) {
1934 if (tmpbuf) {
1935 /* The SV is bytes, and we've had to upgrade it. */
1936 blen_chars = orig_blen_bytes;
1937 } else {
1938 /* The SV really is UTF-8. */
3f914778
FC
1939 /* Don't call sv_len_utf8 on a magical or overloaded
1940 scalar, as we might get back a different result. */
1941 blen_chars = sv_or_pv_len_utf8(bufsv, buffer, blen);
c9cb0f41
NC
1942 }
1943 } else {
1944 blen_chars = blen;
1945 }
1946
1947 if (MARK >= SP) {
1948 length = blen_chars;
1949 } else {
1950#if Size_t_size > IVSIZE
1951 length = (Size_t)SvNVx(*++MARK);
1952#else
1953 length = (Size_t)SvIVx(*++MARK);
1954#endif
4b0c4b6f
NC
1955 if ((SSize_t)length < 0) {
1956 Safefree(tmpbuf);
c9cb0f41 1957 DIE(aTHX_ "Negative length");
4b0c4b6f 1958 }
7d59b7e4 1959 }
c9cb0f41 1960
bbce6d69 1961 if (MARK < SP) {
a0d0e21e 1962 offset = SvIVx(*++MARK);
bbce6d69 1963 if (offset < 0) {
4b0c4b6f
NC
1964 if (-offset > (IV)blen_chars) {
1965 Safefree(tmpbuf);
cea2e8a9 1966 DIE(aTHX_ "Offset outside string");
4b0c4b6f 1967 }
c9cb0f41 1968 offset += blen_chars;
3c946528 1969 } else if (offset > (IV)blen_chars) {
4b0c4b6f 1970 Safefree(tmpbuf);
cea2e8a9 1971 DIE(aTHX_ "Offset outside string");
4b0c4b6f 1972 }
bbce6d69 1973 } else
a0d0e21e 1974 offset = 0;
c9cb0f41
NC
1975 if (length > blen_chars - offset)
1976 length = blen_chars - offset;
1977 if (doing_utf8) {
1978 /* Here we convert length from characters to bytes. */
1979 if (tmpbuf || SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
1980 /* Either we had to convert the SV, or the SV is magical, or
1981 the SV has overloading, in which case we can't or mustn't
1982 or mustn't call it again. */
1983
1984 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
1985 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1986 } else {
1987 /* It's a real UTF-8 SV, and it's not going to change under
1988 us. Take advantage of any cache. */
1989 I32 start = offset;
1990 I32 len_I32 = length;
1991
1992 /* Convert the start and end character positions to bytes.
1993 Remember that the second argument to sv_pos_u2b is relative
1994 to the first. */
1995 sv_pos_u2b(bufsv, &start, &len_I32);
1996
1997 buffer += start;
1998 length = len_I32;
1999 }
7d59b7e4
NIS
2000 }
2001 else {
2002 buffer = buffer+offset;
2003 }
a7092146 2004#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 2005 if (IoTYPE(io) == IoTYPE_SOCKET) {
8c99d73e 2006 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
7d59b7e4 2007 buffer, length, 0);
a7092146
GS
2008 }
2009 else
2010#endif
2011 {
94e4c244 2012 /* See the note at doio.c:do_print about filesize limits. --jhi */
8c99d73e 2013 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
7d59b7e4 2014 buffer, length);
a7092146 2015 }
a0d0e21e 2016 }
c9cb0f41 2017
8c99d73e 2018 if (retval < 0)
a0d0e21e
LW
2019 goto say_undef;
2020 SP = ORIGMARK;
c9cb0f41 2021 if (doing_utf8)
f36eea10 2022 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
4b0c4b6f 2023
a79db61d 2024 Safefree(tmpbuf);
8c99d73e
GS
2025#if Size_t_size > IVSIZE
2026 PUSHn(retval);
2027#else
2028 PUSHi(retval);
2029#endif
a0d0e21e
LW
2030 RETURN;
2031
2032 say_undef:
a79db61d 2033 Safefree(tmpbuf);
a0d0e21e
LW
2034 SP = ORIGMARK;
2035 RETPUSHUNDEF;
2036}
2037
a0d0e21e
LW
2038PP(pp_eof)
2039{
27da23d5 2040 dVAR; dSP;
a0d0e21e 2041 GV *gv;
32e65323 2042 IO *io;
a5e1d062 2043 const MAGIC *mg;
bc0c81ca
NC
2044 /*
2045 * in Perl 5.12 and later, the additional parameter is a bitmask:
2046 * 0 = eof
2047 * 1 = eof(FH)
2048 * 2 = eof() <- ARGV magic
2049 *
2050 * I'll rely on the compiler's trace flow analysis to decide whether to
2051 * actually assign this out here, or punt it into the only block where it is
2052 * used. Doing it out here is DRY on the condition logic.
2053 */
2054 unsigned int which;
a0d0e21e 2055
bc0c81ca 2056 if (MAXARG) {
32e65323 2057 gv = PL_last_in_gv = MUTABLE_GV(POPs); /* eof(FH) */
bc0c81ca
NC
2058 which = 1;
2059 }
b5f55170
NC
2060 else {
2061 EXTEND(SP, 1);
2062
bc0c81ca 2063 if (PL_op->op_flags & OPf_SPECIAL) {
b5f55170 2064 gv = PL_last_in_gv = GvEGVx(PL_argvgv); /* eof() - ARGV magic */
bc0c81ca
NC
2065 which = 2;
2066 }
2067 else {
b5f55170 2068 gv = PL_last_in_gv; /* eof */
bc0c81ca
NC
2069 which = 0;
2070 }
b5f55170 2071 }
32e65323
CS
2072
2073 if (!gv)
2074 RETPUSHNO;
2075
2076 if ((io = GvIO(gv)) && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) {
3e0cb5de 2077 return tied_method1(SV_CONST(EOF), SP, MUTABLE_SV(io), mg, newSVuv(which));
146174a9 2078 }
4592e6ca 2079
32e65323
CS
2080 if (!MAXARG && (PL_op->op_flags & OPf_SPECIAL)) { /* eof() */
2081 if (io && !IoIFP(io)) {
2082 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
2083 IoLINES(io) = 0;
2084 IoFLAGS(io) &= ~IOf_START;
2085 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, NULL);
2086 if (GvSV(gv))
2087 sv_setpvs(GvSV(gv), "-");
2088 else
2089 GvSV(gv) = newSVpvs("-");
2090 SvSETMAGIC(GvSV(gv));
2091 }
2092 else if (!nextargv(gv))
2093 RETPUSHYES;
6136c704 2094 }
4592e6ca
NIS
2095 }
2096
32e65323 2097 PUSHs(boolSV(do_eof(gv)));
a0d0e21e
LW
2098 RETURN;
2099}
2100
2101PP(pp_tell)
2102{
27da23d5 2103 dVAR; dSP; dTARGET;
301e8125 2104 GV *gv;
5b468f54 2105 IO *io;
a0d0e21e 2106
b64a1294 2107 if (MAXARG != 0 && (TOPs || POPs))
159b6efe 2108 PL_last_in_gv = MUTABLE_GV(POPs);
ac3697cd
NC
2109 else
2110 EXTEND(SP, 1);
c4420975 2111 gv = PL_last_in_gv;
4592e6ca 2112
9c9f25b8
NC
2113 io = GvIO(gv);
2114 if (io) {
a5e1d062 2115 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2116 if (mg) {
3e0cb5de 2117 return tied_method0(SV_CONST(TELL), SP, MUTABLE_SV(io), mg);
a79db61d 2118 }
4592e6ca 2119 }
f4817f32 2120 else if (!gv) {
f03173f2
RGS
2121 if (!errno)
2122 SETERRNO(EBADF,RMS_IFI);
2123 PUSHi(-1);
2124 RETURN;
2125 }
4592e6ca 2126
146174a9
CB
2127#if LSEEKSIZE > IVSIZE
2128 PUSHn( do_tell(gv) );
2129#else
a0d0e21e 2130 PUSHi( do_tell(gv) );
146174a9 2131#endif
a0d0e21e
LW
2132 RETURN;
2133}
2134
137443ea
PP
2135PP(pp_sysseek)
2136{
27da23d5 2137 dVAR; dSP;
1df70142 2138 const int whence = POPi;
146174a9 2139#if LSEEKSIZE > IVSIZE
7452cf6a 2140 const Off_t offset = (Off_t)SvNVx(POPs);
146174a9 2141#else
7452cf6a 2142 const Off_t offset = (Off_t)SvIVx(POPs);
146174a9 2143#endif
a0d0e21e 2144
159b6efe 2145 GV * const gv = PL_last_in_gv = MUTABLE_GV(POPs);
9c9f25b8 2146 IO *const io = GvIO(gv);
4592e6ca 2147
9c9f25b8 2148 if (io) {
a5e1d062 2149 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2150 if (mg) {
cb50131a 2151#if LSEEKSIZE > IVSIZE
74f0b550 2152 SV *const offset_sv = newSVnv((NV) offset);
cb50131a 2153#else
74f0b550 2154 SV *const offset_sv = newSViv(offset);
cb50131a 2155#endif
bc0c81ca 2156
3e0cb5de 2157 return tied_method2(SV_CONST(SEEK), SP, MUTABLE_SV(io), mg, offset_sv,
d682515d 2158 newSViv(whence));
a79db61d 2159 }
4592e6ca
NIS
2160 }
2161
533c011a 2162 if (PL_op->op_type == OP_SEEK)
8903cb82
PP
2163 PUSHs(boolSV(do_seek(gv, offset, whence)));
2164 else {
0bcc34c2 2165 const Off_t sought = do_sysseek(gv, offset, whence);
b448e4fe 2166 if (sought < 0)
146174a9
CB
2167 PUSHs(&PL_sv_undef);
2168 else {
7452cf6a 2169 SV* const sv = sought ?
146174a9 2170#if LSEEKSIZE > IVSIZE
b448e4fe 2171 newSVnv((NV)sought)
146174a9 2172#else
b448e4fe 2173 newSViv(sought)
146174a9
CB
2174#endif
2175 : newSVpvn(zero_but_true, ZBTLEN);
6e449a3a 2176 mPUSHs(sv);
146174a9 2177 }
8903cb82 2178 }
a0d0e21e
LW
2179 RETURN;
2180}
2181
2182PP(pp_truncate)
2183{
97aff369 2184 dVAR;
39644a26 2185 dSP;
8c99d73e
GS
2186 /* There seems to be no consensus on the length type of truncate()
2187 * and ftruncate(), both off_t and size_t have supporters. In
2188 * general one would think that when using large files, off_t is
2189 * at least as wide as size_t, so using an off_t should be okay. */
2190 /* XXX Configure probe for the length type of *truncate() needed XXX */
0bcc34c2 2191 Off_t len;
a0d0e21e 2192
25342a55 2193#if Off_t_size > IVSIZE
0bcc34c2 2194 len = (Off_t)POPn;
8c99d73e 2195#else
0bcc34c2 2196 len = (Off_t)POPi;
8c99d73e
GS
2197#endif
2198 /* Checking for length < 0 is problematic as the type might or
301e8125 2199 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 2200 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2201 SETERRNO(0,0);
d05c1ba0 2202 {
5e0adc2d 2203 SV * const sv = POPs;
d05c1ba0
JH
2204 int result = 1;
2205 GV *tmpgv;
090bf15b
SR
2206 IO *io;
2207
42409c40
FC
2208 if (PL_op->op_flags & OPf_SPECIAL
2209 ? (tmpgv = gv_fetchsv(sv, 0, SVt_PVIO), 1)
2210 : !!(tmpgv = MAYBE_DEREF_GV(sv)) ) {
9c9f25b8
NC
2211 io = GvIO(tmpgv);
2212 if (!io)
090bf15b 2213 result = 0;
d05c1ba0 2214 else {
090bf15b 2215 PerlIO *fp;
090bf15b
SR
2216 do_ftruncate_io:
2217 TAINT_PROPER("truncate");
2218 if (!(fp = IoIFP(io))) {
2219 result = 0;
2220 }
2221 else {
2222 PerlIO_flush(fp);
cbdc8872 2223#ifdef HAS_TRUNCATE
090bf15b 2224 if (ftruncate(PerlIO_fileno(fp), len) < 0)
301e8125 2225#else
090bf15b 2226 if (my_chsize(PerlIO_fileno(fp), len) < 0)
cbdc8872 2227#endif
090bf15b
SR
2228 result = 0;
2229 }
d05c1ba0 2230 }
cbdc8872 2231 }
5e0adc2d 2232 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2233 io = MUTABLE_IO(SvRV(sv)); /* *main::FRED{IO} for example */
090bf15b 2234 goto do_ftruncate_io;
5e0adc2d
FC
2235 }
2236 else {
2237 const char * const name = SvPV_nomg_const_nolen(sv);
d05c1ba0 2238 TAINT_PROPER("truncate");
cbdc8872 2239#ifdef HAS_TRUNCATE
d05c1ba0
JH
2240 if (truncate(name, len) < 0)
2241 result = 0;
cbdc8872 2242#else
d05c1ba0 2243 {
7452cf6a 2244 const int tmpfd = PerlLIO_open(name, O_RDWR);
d05c1ba0 2245
7452cf6a 2246 if (tmpfd < 0)
cbdc8872 2247 result = 0;
d05c1ba0
JH
2248 else {
2249 if (my_chsize(tmpfd, len) < 0)
2250 result = 0;
2251 PerlLIO_close(tmpfd);
2252 }
cbdc8872 2253 }
a0d0e21e 2254#endif
d05c1ba0 2255 }
a0d0e21e 2256
d05c1ba0
JH
2257 if (result)
2258 RETPUSHYES;
2259 if (!errno)
93189314 2260 SETERRNO(EBADF,RMS_IFI);
d05c1ba0
JH
2261 RETPUSHUNDEF;
2262 }
a0d0e21e
LW
2263}
2264
a0d0e21e
LW
2265PP(pp_ioctl)
2266{
97aff369 2267 dVAR; dSP; dTARGET;
7452cf6a 2268 SV * const argsv = POPs;
1df70142 2269 const unsigned int func = POPu;
e1ec3a88 2270 const int optype = PL_op->op_type;
159b6efe 2271 GV * const gv = MUTABLE_GV(POPs);
4608196e 2272 IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2273 char *s;
324aa91a 2274 IV retval;
a0d0e21e 2275
748a9306 2276 if (!io || !argsv || !IoIFP(io)) {
51087808 2277 report_evil_fh(gv);
93189314 2278 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
a0d0e21e
LW
2279 RETPUSHUNDEF;
2280 }
2281
748a9306 2282 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2283 STRLEN len;
324aa91a 2284 STRLEN need;
748a9306 2285 s = SvPV_force(argsv, len);
324aa91a
HF
2286 need = IOCPARM_LEN(func);
2287 if (len < need) {
2288 s = Sv_Grow(argsv, need + 1);
2289 SvCUR_set(argsv, need);
a0d0e21e
LW
2290 }
2291
748a9306 2292 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW
2293 }
2294 else {
748a9306 2295 retval = SvIV(argsv);
c529f79d 2296 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW
2297 }
2298
ed4b2e6b 2299 TAINT_PROPER(PL_op_desc[optype]);
a0d0e21e
LW
2300
2301 if (optype == OP_IOCTL)
2302#ifdef HAS_IOCTL
76e3520e 2303 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2304#else
cea2e8a9 2305 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW
2306#endif
2307 else
c214f4ad
B
2308#ifndef HAS_FCNTL
2309 DIE(aTHX_ "fcntl is not implemented");
2310#else
55497cff 2311#if defined(OS2) && defined(__EMX__)
760ac839 2312 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2313#else
760ac839 2314 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2315#endif
6652bd42 2316#endif
a0d0e21e 2317
6652bd42 2318#if defined(HAS_IOCTL) || defined(HAS_FCNTL)
748a9306
LW
2319 if (SvPOK(argsv)) {
2320 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2321 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
53e06cf0 2322 OP_NAME(PL_op));
748a9306
LW
2323 s[SvCUR(argsv)] = 0; /* put our null back */
2324 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW
2325 }
2326
2327 if (retval == -1)
2328 RETPUSHUNDEF;
2329 if (retval != 0) {
2330 PUSHi(retval);
2331 }
2332 else {
8903cb82 2333 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e 2334 }
4808266b 2335#endif
c214f4ad 2336 RETURN;
a0d0e21e
LW
2337}
2338
2339PP(pp_flock)
2340{
9cad6237 2341#ifdef FLOCK
97aff369 2342 dVAR; dSP; dTARGET;
a0d0e21e 2343 I32 value;
7452cf6a 2344 const int argtype = POPi;
1f28cbca 2345 GV * const gv = MUTABLE_GV(POPs);
9c9f25b8
NC
2346 IO *const io = GvIO(gv);
2347 PerlIO *const fp = io ? IoIFP(io) : NULL;
16d20bd9 2348
0bcc34c2 2349 /* XXX Looks to me like io is always NULL at this point */
a0d0e21e 2350 if (fp) {
68dc0745 2351 (void)PerlIO_flush(fp);
76e3520e 2352 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2353 }
cb50131a 2354 else {
51087808 2355 report_evil_fh(gv);
a0d0e21e 2356 value = 0;
93189314 2357 SETERRNO(EBADF,RMS_IFI);
cb50131a 2358 }
a0d0e21e
LW
2359 PUSHi(value);
2360 RETURN;
2361#else
cea2e8a9 2362 DIE(aTHX_ PL_no_func, "flock()");
a0d0e21e
LW
2363#endif
2364}
2365
2366/* Sockets. */
2367
7627e6d0
NC
2368#ifdef HAS_SOCKET
2369
a0d0e21e
LW
2370PP(pp_socket)
2371{
97aff369 2372 dVAR; dSP;
7452cf6a
AL
2373 const int protocol = POPi;
2374 const int type = POPi;
2375 const int domain = POPi;
159b6efe 2376 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2377 IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e
LW
2378 int fd;
2379
9c9f25b8 2380 if (!io) {
51087808 2381 report_evil_fh(gv);
93189314 2382 SETERRNO(EBADF,LIB_INVARG);
a0d0e21e
LW
2383 RETPUSHUNDEF;
2384 }
2385
57171420
BS
2386 if (IoIFP(io))
2387 do_close(gv, FALSE);
2388
a0d0e21e 2389 TAINT_PROPER("socket");
6ad3d225 2390 fd = PerlSock_socket(domain, type, protocol);
a0d0e21e
LW
2391 if (fd < 0)
2392 RETPUSHUNDEF;
460c8493
IZ
2393 IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2394 IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2395 IoTYPE(io) = IoTYPE_SOCKET;
a0d0e21e 2396 if (!IoIFP(io) || !IoOFP(io)) {
760ac839
LW
2397 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2398 if (IoOFP(io)) PerlIO_close(IoOFP(io));
6ad3d225 2399 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
a0d0e21e
LW
2400 RETPUSHUNDEF;
2401 }
8d2a6795
GS
2402#if defined(HAS_FCNTL) && defined(F_SETFD)
2403 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2404#endif
a0d0e21e
LW
2405
2406 RETPUSHYES;
a0d0e21e 2407}
7627e6d0 2408#endif
a0d0e21e
LW
2409
2410PP(pp_sockpair)
2411{
c95c94b1 2412#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
97aff369 2413 dVAR; dSP;
e0b7b5e2 2414 int fd[2];
7452cf6a
AL
2415 const int protocol = POPi;
2416 const int type = POPi;
2417 const int domain = POPi;
e0b7b5e2
DD
2418 GV * gv1;
2419 IO * io1;
2420
159b6efe 2421 GV * const gv2 = MUTABLE_GV(POPs);
eb578fdb 2422 IO * const io2 = gv2 ? GvIOn(gv2) : NULL;
e0b7b5e2
DD
2423 if (!io2)
2424 report_evil_fh(gv2);
a0d0e21e 2425
e0b7b5e2
DD
2426 gv1 = MUTABLE_GV(POPs);
2427 io1 = gv1 ? GvIOn(gv1) : NULL;
9c9f25b8
NC
2428 if (!io1)
2429 report_evil_fh(gv1);
a0d0e21e 2430
46d2cc54 2431 if (io1 && IoIFP(io1))
dc0d0a5f 2432 do_close(gv1, FALSE);
46d2cc54 2433 if (io2 && IoIFP(io2))
dc0d0a5f 2434 do_close(gv2, FALSE);
57171420 2435
46d2cc54
NC
2436 if (!io1 || !io2)
2437 RETPUSHUNDEF;
2438
a0d0e21e 2439 TAINT_PROPER("socketpair");
6ad3d225 2440 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
a0d0e21e 2441 RETPUSHUNDEF;
460c8493
IZ
2442 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2443 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
50952442 2444 IoTYPE(io1) = IoTYPE_SOCKET;
460c8493
IZ
2445 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2446 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
50952442 2447 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2448 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW
2449 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2450 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2451 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW
2452 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2453 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2454 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW
2455 RETPUSHUNDEF;
2456 }
8d2a6795
GS
2457#if defined(HAS_FCNTL) && defined(F_SETFD)
2458 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2459 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2460#endif
a0d0e21e
LW
2461
2462 RETPUSHYES;
2463#else
cea2e8a9 2464 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW
2465#endif
2466}
2467
7627e6d0
NC
2468#ifdef HAS_SOCKET
2469
a0d0e21e
LW
2470PP(pp_bind)
2471{
97aff369 2472 dVAR; dSP;
7452cf6a 2473 SV * const addrsv = POPs;
349d4f2f
NC
2474 /* OK, so on what platform does bind modify addr? */
2475 const char *addr;
159b6efe 2476 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2477 IO * const io = GvIOn(gv);
a0d0e21e 2478 STRLEN len;
e0b7b5e2 2479 int op_type;
a0d0e21e
LW
2480
2481 if (!io || !IoIFP(io))
2482 goto nuts;
2483
349d4f2f 2484 addr = SvPV_const(addrsv, len);
e0b7b5e2 2485 op_type = PL_op->op_type;
32b81f04
NC
2486 TAINT_PROPER(PL_op_desc[op_type]);
2487 if ((op_type == OP_BIND
2488 ? PerlSock_bind(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len)
2489 : PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len))
2490 >= 0)
a0d0e21e
LW
2491 RETPUSHYES;
2492 else
2493 RETPUSHUNDEF;
2494
2495nuts:
fbcda526 2496 report_evil_fh(gv);
93189314 2497 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2498 RETPUSHUNDEF;
a0d0e21e
LW
2499}
2500
2501PP(pp_listen)
2502{
97aff369 2503 dVAR; dSP;
7452cf6a 2504 const int backlog = POPi;
159b6efe 2505 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2506 IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2507
9c9f25b8 2508 if (!io || !IoIFP(io))
a0d0e21e
LW
2509 goto nuts;
2510
6ad3d225 2511 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW
2512 RETPUSHYES;
2513 else
2514 RETPUSHUNDEF;
2515
2516nuts:
fbcda526 2517 report_evil_fh(gv);
93189314 2518 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2519 RETPUSHUNDEF;
a0d0e21e
LW
2520}
2521
2522PP(pp_accept)
2523{
97aff369 2524 dVAR; dSP; dTARGET;
eb578fdb
KW
2525 IO *nstio;
2526 IO *gstio;
93d47a36 2527 char namebuf[MAXPATHLEN];
b5afd346 2528#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
93d47a36
JH
2529 Sock_size_t len = sizeof (struct sockaddr_in);
2530#else
2531 Sock_size_t len = sizeof namebuf;
2532#endif
159b6efe
NC
2533 GV * const ggv = MUTABLE_GV(POPs);
2534 GV * const ngv = MUTABLE_GV(POPs);
a0d0e21e
LW
2535 int fd;
2536
a0d0e21e
LW
2537 if (!ngv)
2538 goto badexit;
2539 if (!ggv)
2540 goto nuts;
2541
2542 gstio = GvIO(ggv);
2543 if (!gstio || !IoIFP(gstio))
2544 goto nuts;
2545
2546 nstio = GvIOn(ngv);
93d47a36 2547 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
e294cc5d
JH
2548#if defined(OEMVS)
2549 if (len == 0) {
2550 /* Some platforms indicate zero length when an AF_UNIX client is
2551 * not bound. Simulate a non-zero-length sockaddr structure in
2552 * this case. */
2553 namebuf[0] = 0; /* sun_len */
2554 namebuf[1] = AF_UNIX; /* sun_family */
2555 len = 2;
2556 }
2557#endif
2558
a0d0e21e
LW
2559 if (fd < 0)
2560 goto badexit;
a70048fb
AB
2561 if (IoIFP(nstio))
2562 do_close(ngv, FALSE);
460c8493
IZ
2563 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2564 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2565 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2566 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW
2567 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2568 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2569 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW
2570 goto badexit;
2571 }
8d2a6795
GS
2572#if defined(HAS_FCNTL) && defined(F_SETFD)
2573 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2574#endif
a0d0e21e 2575
381c1bae 2576#ifdef __SCO_VERSION__
93d47a36 2577 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
381c1bae 2578#endif
ed79a026 2579
93d47a36 2580 PUSHp(namebuf, len);
a0d0e21e
LW
2581 RETURN;
2582
2583nuts:
fbcda526 2584 report_evil_fh(ggv);
93189314 2585 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW
2586
2587badexit:
2588 RETPUSHUNDEF;
2589
a0d0e21e
LW
2590}
2591
2592PP(pp_shutdown)
2593{
97aff369 2594 dVAR; dSP; dTARGET;
7452cf6a 2595 const int how = POPi;
159b6efe 2596 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2597 IO * const io = GvIOn(gv);
a0d0e21e
LW
2598
2599 if (!io || !IoIFP(io))
2600 goto nuts;
2601
6ad3d225 2602 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW
2603 RETURN;
2604
2605nuts:
fbcda526 2606 report_evil_fh(gv);
93189314 2607 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2608 RETPUSHUNDEF;
a0d0e21e
LW
2609}
2610
a0d0e21e
LW
2611PP(pp_ssockopt)
2612{
97aff369 2613 dVAR; dSP;
7452cf6a 2614 const int optype = PL_op->op_type;
561b68a9 2615 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
7452cf6a
AL
2616 const unsigned int optname = (unsigned int) POPi;
2617 const unsigned int lvl = (unsigned int) POPi;
159b6efe 2618 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2619 IO * const io = GvIOn(gv);
a0d0e21e 2620 int fd;
1e422769 2621 Sock_size_t len;
a0d0e21e 2622
a0d0e21e
LW
2623 if (!io || !IoIFP(io))
2624 goto nuts;
2625
760ac839 2626 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW
2627 switch (optype) {
2628 case OP_GSOCKOPT:
748a9306 2629 SvGROW(sv, 257);
a0d0e21e 2630 (void)SvPOK_only(sv);
748a9306
LW
2631 SvCUR_set(sv,256);
2632 *SvEND(sv) ='\0';
1e422769 2633 len = SvCUR(sv);
6ad3d225 2634 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2635 goto nuts2;
1e422769 2636 SvCUR_set(sv, len);
748a9306 2637 *SvEND(sv) ='\0';
a0d0e21e
LW
2638 PUSHs(sv);
2639 break;
2640 case OP_SSOCKOPT: {
1215b447
JH
2641#if defined(__SYMBIAN32__)
2642# define SETSOCKOPT_OPTION_VALUE_T void *
2643#else
2644# define SETSOCKOPT_OPTION_VALUE_T const char *
2645#endif
2646 /* XXX TODO: We need to have a proper type (a Configure probe,
2647 * etc.) for what the C headers think of the third argument of
2648 * setsockopt(), the option_value read-only buffer: is it
2649 * a "char *", or a "void *", const or not. Some compilers
2650 * don't take kindly to e.g. assuming that "char *" implicitly
2651 * promotes to a "void *", or to explicitly promoting/demoting
2652 * consts to non/vice versa. The "const void *" is the SUS
2653 * definition, but that does not fly everywhere for the above
2654 * reasons. */
2655 SETSOCKOPT_OPTION_VALUE_T buf;
1e422769
PP
2656 int aint;
2657 if (SvPOKp(sv)) {
2d8e6c8d 2658 STRLEN l;
1215b447 2659 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2d8e6c8d 2660 len = l;
1e422769 2661 }
56ee1660 2662 else {
a0d0e21e 2663 aint = (int)SvIV(sv);
1215b447 2664 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
a0d0e21e
LW
2665 len = sizeof(int);
2666 }
6ad3d225 2667 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2668 goto nuts2;
3280af22 2669 PUSHs(&PL_sv_yes);
a0d0e21e
LW
2670 }
2671 break;
2672 }
2673 RETURN;
2674
2675nuts:
fbcda526 2676 report_evil_fh(gv);
93189314 2677 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW
2678nuts2:
2679 RETPUSHUNDEF;
2680
a0d0e21e
LW
2681}
2682
a0d0e21e
LW
2683PP(pp_getpeername)
2684{
97aff369 2685 dVAR; dSP;
7452cf6a 2686 const int optype = PL_op->op_type;
159b6efe 2687 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2688 IO * const io = GvIOn(gv);
7452cf6a 2689 Sock_size_t len;
a0d0e21e
LW
2690 SV *sv;
2691 int fd;
a0d0e21e
LW
2692
2693 if (!io || !IoIFP(io))
2694 goto nuts;
2695
561b68a9 2696 sv = sv_2mortal(newSV(257));
748a9306 2697 (void)SvPOK_only(sv);
1e422769
PP
2698 len = 256;
2699 SvCUR_set(sv, len);
748a9306 2700 *SvEND(sv) ='\0';
760ac839 2701 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW
2702 switch (optype) {
2703 case OP_GETSOCKNAME:
6ad3d225 2704 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW
2705 goto nuts2;
2706 break;
2707 case OP_GETPEERNAME:
6ad3d225 2708 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2709 goto nuts2;
490ab354
JH
2710#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2711 {
2712 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";
2713 /* If the call succeeded, make sure we don't have a zeroed port/addr */
349d4f2f 2714 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2fbb330f 2715 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
490ab354 2716 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2717 goto nuts2;
490ab354
JH
2718 }
2719 }
2720#endif
a0d0e21e
LW
2721 break;
2722 }
13826f2c
CS
2723#ifdef BOGUS_GETNAME_RETURN
2724 /* Interactive Unix, getpeername() and getsockname()
2725 does not return valid namelen */
1e422769
PP
2726 if (len == BOGUS_GETNAME_RETURN)
2727 len = sizeof(struct sockaddr);
13826f2c 2728#endif
1e422769 2729 SvCUR_set(sv, len);
748a9306 2730 *SvEND(sv) ='\0';
a0d0e21e
LW
2731 PUSHs(sv);
2732 RETURN;
2733
2734nuts:
fbcda526 2735 report_evil_fh(gv);
93189314 2736 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW
2737nuts2:
2738 RETPUSHUNDEF;
7627e6d0 2739}
a0d0e21e 2740
a0d0e21e 2741#endif
a0d0e21e
LW
2742
2743/* Stat calls. */
2744
a0d0e21e
LW
2745PP(pp_stat)
2746{
97aff369 2747 dVAR;
39644a26 2748 dSP;
10edeb5d 2749 GV *gv = NULL;
55dd8d50 2750 IO *io = NULL;
54310121 2751 I32 gimme;
a0d0e21e 2752 I32 max = 13;
109c43ed 2753 SV* sv;
a0d0e21e 2754
109c43ed
FC
2755 if (PL_op->op_flags & OPf_REF ? (gv = cGVOP_gv, 1)
2756 : !!(sv=POPs, gv = MAYBE_DEREF_GV(sv))) {
8a4e5b40 2757 if (PL_op->op_type == OP_LSTAT) {
5d3e98de 2758 if (gv != PL_defgv) {
5d329e6e 2759 do_fstat_warning_check:
a2a5de95 2760 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
93fad930
FC
2761 "lstat() on filehandle%s%"SVf,
2762 gv ? " " : "",
2763 SVfARG(gv
bf29d05f
BF
2764 ? sv_2mortal(newSVhek(GvENAME_HEK(gv)))
2765 : &PL_sv_no));
5d3e98de 2766 } else if (PL_laststype != OP_LSTAT)
b042df57 2767 /* diag_listed_as: The stat preceding %s wasn't an lstat */
8a4e5b40 2768 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
8a4e5b40
DD
2769 }
2770
2dd78f96 2771 if (gv != PL_defgv) {
b8413ac3 2772 bool havefp;
0d5064f1 2773 do_fstat_have_io:
b8413ac3 2774 havefp = FALSE;
3280af22 2775 PL_laststype = OP_STAT;
0d5064f1 2776 PL_statgv = gv ? gv : (GV *)io;
76f68e9b 2777 sv_setpvs(PL_statname, "");
5228a96c 2778 if(gv) {
ad02613c 2779 io = GvIO(gv);
0d5064f1
FC
2780 }
2781 if (io) {
5228a96c
SP
2782 if (IoIFP(io)) {
2783 PL_laststatval =
2784 PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
8080e3c8 2785 havefp = TRUE;
5228a96c 2786 } else if (IoDIRP(io)) {
5228a96c 2787 PL_laststatval =
3497a01f 2788 PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache);
8080e3c8 2789 havefp = TRUE;
5228a96c
SP
2790 } else {
2791 PL_laststatval = -1;
2792 }
5228a96c 2793 }
05bb32d2 2794 else PL_laststatval = -1;
daa30a68 2795 if (PL_laststatval < 0 && !havefp) report_evil_fh(gv);
5228a96c
SP
2796 }
2797
9ddeeac9 2798 if (PL_laststatval < 0) {
a0d0e21e 2799 max = 0;
9ddeeac9 2800 }
a0d0e21e
LW
2801 }
2802 else {
109c43ed 2803 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2804 io = MUTABLE_IO(SvRV(sv));
ad02613c
SP
2805 if (PL_op->op_type == OP_LSTAT)
2806 goto do_fstat_warning_check;
2807 goto do_fstat_have_io;
2808 }
2809
4bac9ae4 2810 SvTAINTED_off(PL_statname); /* previous tainting irrelevant */
109c43ed 2811 sv_setpv(PL_statname, SvPV_nomg_const_nolen(sv));
a0714e2c 2812 PL_statgv = NULL;
533c011a
NIS
2813 PL_laststype = PL_op->op_type;
2814 if (PL_op->op_type == OP_LSTAT)
0510663f 2815 PL_laststatval = PerlLIO_lstat(SvPV_nolen_const(PL_statname), &PL_statcache);
a0d0e21e 2816 else
0510663f 2817 PL_laststatval = PerlLIO_stat(SvPV_nolen_const(PL_statname), &PL_statcache);
3280af22 2818 if (PL_laststatval < 0) {
5d37acd6
DM
2819 if (ckWARN(WARN_NEWLINE) &&
2820 strchr(SvPV_nolen_const(PL_statname), '\n'))
2821 {
2822 /* PL_warn_nl is constant */
2823 GCC_DIAG_IGNORE(-Wformat-nonliteral);
9014280d 2824 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
5d37acd6
DM
2825 GCC_DIAG_RESTORE;
2826 }
a0d0e21e
LW
2827 max = 0;
2828 }
2829 }
2830
54310121
PP
2831 gimme = GIMME_V;
2832 if (gimme != G_ARRAY) {
2833 if (gimme != G_VOID)
2834 XPUSHs(boolSV(max));
2835 RETURN;
a0d0e21e
LW
2836 }
2837 if (max) {
36477c24
PP
2838 EXTEND(SP, max);
2839 EXTEND_MORTAL(max);
6e449a3a 2840 mPUSHi(PL_statcache.st_dev);
8d8cba88
TC
2841#if ST_INO_SIZE > IVSIZE
2842 mPUSHn(PL_statcache.st_ino);
2843#else
2844# if ST_INO_SIGN <= 0
6e449a3a 2845 mPUSHi(PL_statcache.st_ino);
8d8cba88
TC
2846# else
2847 mPUSHu(PL_statcache.st_ino);
2848# endif
2849#endif
6e449a3a
MHM
2850 mPUSHu(PL_statcache.st_mode);
2851 mPUSHu(PL_statcache.st_nlink);
dfff4baf
BF
2852
2853 sv_setuid(PUSHmortal, PL_statcache.st_uid);
2854 sv_setgid(PUSHmortal, PL_statcache.st_gid);
2855
cbdc8872 2856#ifdef USE_STAT_RDEV
6e449a3a 2857 mPUSHi(PL_statcache.st_rdev);
cbdc8872 2858#else
84bafc02 2859 PUSHs(newSVpvs_flags("", SVs_TEMP));
cbdc8872 2860#endif
146174a9 2861#if Off_t_size > IVSIZE
6e449a3a 2862 mPUSHn(PL_statcache.st_size);
146174a9 2863#else
6e449a3a 2864 mPUSHi(PL_statcache.st_size);
146174a9 2865#endif
cbdc8872 2866#ifdef BIG_TIME
6e449a3a
MHM
2867 mPUSHn(PL_statcache.st_atime);
2868 mPUSHn(PL_statcache.st_mtime);
2869 mPUSHn(PL_statcache.st_ctime);
cbdc8872 2870#else
6e449a3a
MHM
2871 mPUSHi(PL_statcache.st_atime);
2872 mPUSHi(PL_statcache.st_mtime);
2873 mPUSHi(PL_statcache.st_ctime);
cbdc8872 2874#endif
a0d0e21e 2875#ifdef USE_STAT_BLOCKS
6e449a3a
MHM
2876 mPUSHu(PL_statcache.st_blksize);
2877 mPUSHu(PL_statcache.st_blocks);
a0d0e21e 2878#else
84bafc02
NC
2879 PUSHs(newSVpvs_flags("", SVs_TEMP));
2880 PUSHs(newSVpvs_flags("", SVs_TEMP));
a0d0e21e
LW
2881#endif
2882 }
2883 RETURN;
2884}
2885
6c48f025
NC
2886/* All filetest ops avoid manipulating the perl stack pointer in their main
2887 bodies (since commit d2c4d2d1e22d3125), and return using either
2888 S_ft_return_false() or S_ft_return_true(). These two helper functions are
2889 the only two which manipulate the perl stack. To ensure that no stack
2890 manipulation macros are used, the filetest ops avoid defining a local copy
2891 of the stack pointer with dSP. */
2892
8db8f6b6
FC
2893/* If the next filetest is stacked up with this one
2894 (PL_op->op_private & OPpFT_STACKING), we leave
2895 the original argument on the stack for success,
2896 and skip the stacked operators on failure.
2897 The next few macros/functions take care of this.
2898*/
2899
2900static OP *
9a6b02e8 2901S_ft_return_false(pTHX_ SV *ret) {
8db8f6b6 2902 OP *next = NORMAL;
697f9d37
NC
2903 dSP;
2904
226b9201 2905 if (PL_op->op_flags & OPf_REF) XPUSHs(ret);
8db8f6b6
FC
2906 else SETs(ret);
2907 PUTBACK;
697f9d37 2908
9a6b02e8
NC
2909 if (PL_op->op_private & OPpFT_STACKING) {
2910 while (OP_IS_FILETEST(next->op_type)
2911 && next->op_private & OPpFT_STACKED)
2912 next = next->op_next;
2913 }
8db8f6b6
FC
2914 return next;
2915}
2916
07ed4d4b
NC
2917PERL_STATIC_INLINE OP *
2918S_ft_return_true(pTHX_ SV *ret) {
2919 dSP;
2920 if (PL_op->op_flags & OPf_REF)
2921 XPUSHs(PL_op->op_private & OPpFT_STACKING ? (SV *)cGVOP_gv : (ret));
2922 else if (!(PL_op->op_private & OPpFT_STACKING))
2923 SETs(ret);
2924 PUTBACK;
2925 return NORMAL;
2926}
8db8f6b6 2927
48d023d6
NC
2928#define FT_RETURNNO return S_ft_return_false(aTHX_ &PL_sv_no)
2929#define FT_RETURNUNDEF return S_ft_return_false(aTHX_ &PL_sv_undef)
2930#define FT_RETURNYES return S_ft_return_true(aTHX_ &PL_sv_yes)
8db8f6b6 2931
6f1401dc 2932#define tryAMAGICftest_MG(chr) STMT_START { \
d2f67720 2933 if ( (SvFLAGS(*PL_stack_sp) & (SVf_ROK|SVs_GMG)) \
8db8f6b6
FC
2934 && PL_op->op_flags & OPf_KIDS) { \
2935 OP *next = S_try_amagic_ftest(aTHX_ chr); \
2936 if (next) return next; \
2937 } \
6f1401dc
DM
2938 } STMT_END
2939
8db8f6b6 2940STATIC OP *
6f1401dc
DM
2941S_try_amagic_ftest(pTHX_ char chr) {
2942 dVAR;
d2f67720 2943 SV *const arg = *PL_stack_sp;
6f1401dc
DM
2944
2945 assert(chr != '?');
c5780028 2946 if (!(PL_op->op_private & OPpFT_STACKING)) SvGETMAGIC(arg);
6f1401dc 2947
d2f67720 2948 if (SvAMAGIC(arg))
6f1401dc
DM
2949 {
2950 const char tmpchr = chr;
6f1401dc
DM
2951 SV * const tmpsv = amagic_call(arg,
2952 newSVpvn_flags(&tmpchr, 1, SVs_TEMP),
2953 ftest_amg, AMGf_unary);
2954
2955 if (!tmpsv)
8db8f6b6 2956 return NULL;
6f1401dc 2957
48d023d6
NC
2958 return SvTRUE(tmpsv)
2959 ? S_ft_return_true(aTHX_ tmpsv) : S_ft_return_false(aTHX_ tmpsv);
6f1401dc 2960 }
8db8f6b6 2961 return NULL;
6f1401dc
DM
2962}
2963
2964
a0d0e21e
LW
2965PP(pp_ftrread)
2966{
97aff369 2967 dVAR;
9cad6237 2968 I32 result;
af9e49b4
NC
2969 /* Not const, because things tweak this below. Not bool, because there's
2970 no guarantee that OPp_FT_ACCESS is <= CHAR_MAX */
2971#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2972 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
2973 /* Giving some sort of initial value silences compilers. */
2974# ifdef R_OK
2975 int access_mode = R_OK;
2976# else
2977 int access_mode = 0;
2978# endif
5ff3f7a4 2979#else
af9e49b4
NC
2980 /* access_mode is never used, but leaving use_access in makes the
2981 conditional compiling below much clearer. */
2982 I32 use_access = 0;
5ff3f7a4 2983#endif
2dcac756 2984 Mode_t stat_mode = S_IRUSR;
a0d0e21e 2985
af9e49b4 2986 bool effective = FALSE;
07fe7c6a 2987 char opchar = '?';
af9e49b4 2988
7fb13887
BM
2989 switch (PL_op->op_type) {
2990 case OP_FTRREAD: opchar = 'R'; break;
2991 case OP_FTRWRITE: opchar = 'W'; break;
2992 case OP_FTREXEC: opchar = 'X'; break;
2993 case OP_FTEREAD: opchar = 'r'; break;
2994 case OP_FTEWRITE: opchar = 'w'; break;
2995 case OP_FTEEXEC: opchar = 'x'; break;
2996 }
6f1401dc 2997 tryAMAGICftest_MG(opchar);
7fb13887 2998
af9e49b4
NC
2999 switch (PL_op->op_type) {
3000 case OP_FTRREAD:
3001#if !(defined(HAS_ACCESS) && defined(R_OK))
3002 use_access = 0;
3003#endif
3004 break;
3005
3006 case OP_FTRWRITE:
5ff3f7a4 3007#if defined(HAS_ACCESS) && defined(W_OK)
af9e49b4 3008 access_mode = W_OK;
5ff3f7a4 3009#else
af9e49b4 3010 use_access = 0;
5ff3f7a4 3011#endif
af9e49b4
NC
3012 stat_mode = S_IWUSR;
3013 break;
a0d0e21e 3014
af9e49b4 3015 case OP_FTREXEC:
5ff3f7a4 3016#if defined(HAS_ACCESS) && defined(X_OK)
af9e49b4 3017 access_mode = X_OK;
5ff3f7a4 3018#else
af9e49b4 3019 use_access = 0;
5ff3f7a4 3020#endif
af9e49b4
NC
3021 stat_mode = S_IXUSR;
3022 break;
a0d0e21e 3023
af9e49b4 3024 case OP_FTEWRITE:
faee0e31 3025#ifdef PERL_EFF_ACCESS
af9e49b4 3026 access_mode = W_OK;
5ff3f7a4 3027#endif
af9e49b4 3028 stat_mode = S_IWUSR;
7fb13887 3029 /* fall through */
a0d0e21e 3030
af9e49b4
NC
3031 case OP_FTEREAD:
3032#ifndef PERL_EFF_ACCESS
3033 use_access = 0;
3034#endif
3035 effective = TRUE;
3036 break;
3037
af9e49b4 3038 case OP_FTEEXEC:
faee0e31 3039#ifdef PERL_EFF_ACCESS
b376053d 3040 access_mode = X_OK;
5ff3f7a4 3041#else
af9e49b4 3042 use_access = 0;
5ff3f7a4 3043#endif
af9e49b4
NC
3044 stat_mode = S_IXUSR;
3045 effective = TRUE;
3046 break;
3047 }
a0d0e21e 3048
af9e49b4
NC
3049 if (use_access) {
3050#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
d2f67720 3051 const char *name = SvPV_nolen(*PL_stack_sp);
af9e49b4
NC
3052 if (effective) {
3053# ifdef PERL_EFF_ACCESS
3054 result = PERL_EFF_ACCESS(name, access_mode);
3055# else
3056 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
3057 OP_NAME(PL_op));
3058# endif
3059 }
3060 else {
3061# ifdef HAS_ACCESS
3062 result = access(name, access_mode);
3063# else
3064 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
3065# endif
3066 }
5ff3f7a4 3067 if (result == 0)
d2c4d2d1 3068 FT_RETURNYES;
5ff3f7a4 3069 if (result < 0)
d2c4d2d1
FC
3070 FT_RETURNUNDEF;
3071 FT_RETURNNO;
af9e49b4 3072#endif
22865c03 3073 }
af9e49b4 3074
40c852de 3075 result = my_stat_flags(0);
a0d0e21e 3076 if (result < 0)
8db8f6b6 3077 FT_RETURNUNDEF;
af9e49b4 3078 if (cando(stat_mode, effective, &PL_statcache))
8db8f6b6
FC
3079 FT_RETURNYES;
3080 FT_RETURNNO;
a0d0e21e
LW
3081}
3082
3083PP(pp_ftis)
3084{
97aff369 3085 dVAR;
fbb0b3b3 3086 I32 result;
d7f0a2f4 3087 const int op_type = PL_op->op_type;
07fe7c6a 3088 char opchar = '?';
07fe7c6a
BM
3089
3090 switch (op_type) {
3091 case OP_FTIS: opchar = 'e'; break;
3092 case OP_FTSIZE: opchar = 's'; break;
3093 case OP_FTMTIME: opchar = 'M'; break;
3094 case OP_FTCTIME: opchar = 'C'; break;
3095 case OP_FTATIME: opchar = 'A'; break;
3096 }
6f1401dc 3097 tryAMAGICftest_MG(opchar);
07fe7c6a 3098
40c852de 3099 result = my_stat_flags(0);
a0d0e21e 3100 if (result < 0)
8db8f6b6 3101 FT_RETURNUNDEF;
d7f0a2f4 3102 if (op_type == OP_FTIS)
8db8f6b6 3103 FT_RETURNYES;
957b0e1d 3104 {
d7f0a2f4
NC
3105 /* You can't dTARGET inside OP_FTIS, because you'll get
3106 "panic: pad_sv po" - the op is not flagged to have a target. */
957b0e1d 3107 dTARGET;
d7f0a2f4 3108 switch (op_type) {
957b0e1d
NC
3109 case OP_FTSIZE:
3110#if Off_t_size > IVSIZE
8db8f6b6 3111 sv_setnv(TARG, (NV)PL_statcache.st_size);
957b0e1d 3112#else
8db8f6b6 3113 sv_setiv(TARG, (IV)PL_statcache.st_size);
957b0e1d
NC
3114#endif
3115 break;
3116 case OP_FTMTIME:
8db8f6b6
FC
3117 sv_setnv(TARG,
3118 ((NV)PL_basetime - PL_statcache.st_mtime) / 86400.0 );
957b0e1d
NC
3119 break;
3120 case OP_FTATIME:
8db8f6b6
FC
3121 sv_setnv(TARG,
3122 ((NV)PL_basetime - PL_statcache.st_atime) / 86400.0 );
957b0e1d
NC
3123 break;
3124 case OP_FTCTIME:
8db8f6b6
FC
3125 sv_setnv(TARG,
3126 ((NV)PL_basetime - PL_statcache.st_ctime) / 86400.0 );
957b0e1d
NC
3127 break;
3128 }
8db8f6b6 3129 SvSETMAGIC(TARG);
48d023d6
NC
3130 return SvTRUE_nomg(TARG)
3131 ? S_ft_return_true(aTHX_ TARG) : S_ft_return_false(aTHX_ TARG);
957b0e1d 3132 }
a0d0e21e
LW
3133}
3134
a0d0e21e
LW
3135PP(pp_ftrowned)
3136{
97aff369 3137 dVAR;
fbb0b3b3 3138 I32 result;
07fe7c6a 3139 char opchar = '?';
17ad201a 3140
7fb13887
BM
3141 switch (PL_op->op_type) {
3142 case OP_FTROWNED: opchar = 'O'; break;
3143 case OP_FTEOWNED: opchar = 'o'; break;
3144 case OP_FTZERO: opchar = 'z'; break;
3145 case OP_FTSOCK: opchar = 'S'; break;
3146 case OP_FTCHR: opchar = 'c'; break;
3147 case OP_FTBLK: opchar = 'b'; break;
3148 case OP_FTFILE: opchar = 'f'; break;
3149 case OP_FTDIR: opchar = 'd'; break;
3150 case OP_FTPIPE: opchar = 'p'; break;
3151 case OP_FTSUID: opchar = 'u'; break;
3152 case OP_FTSGID: opchar = 'g'; break;
3153 case OP_FTSVTX: opchar = 'k'; break;
3154 }
6f1401dc 3155 tryAMAGICftest_MG(opchar);
7fb13887 3156
17ad201a
NC
3157 /* I believe that all these three are likely to be defined on most every
3158 system these days. */
3159#ifndef S_ISUID
c410dd6a 3160 if(PL_op->op_type == OP_FTSUID) {
8db8f6b6 3161 FT_RETURNNO;
c410dd6a 3162 }
17ad201a
NC
3163#endif
3164#ifndef S_ISGID
c410dd6a 3165 if(PL_op->op_type == OP_FTSGID) {
8db8f6b6 3166 FT_RETURNNO;
c410dd6a 3167 }
17ad201a
NC
3168#endif
3169#ifndef S_ISVTX
c410dd6a 3170 if(PL_op->op_type == OP_FTSVTX) {
8db8f6b6 3171 FT_RETURNNO;
c410dd6a 3172 }
17ad201a
NC
3173#endif
3174
40c852de 3175 result = my_stat_flags(0);
a0d0e21e 3176 if (result < 0)
8db8f6b6 3177 FT_RETURNUNDEF;
f1cb2d48
NC
3178 switch (PL_op->op_type) {
3179 case OP_FTROWNED:
985213f2 3180 if (PL_statcache.st_uid == PerlProc_getuid())
8db8f6b6 3181 FT_RETURNYES;
f1cb2d48
NC
3182 break;
3183 case OP_FTEOWNED:
985213f2 3184 if (PL_statcache.st_uid == PerlProc_geteuid())
8db8f6b6 3185 FT_RETURNYES;
f1cb2d48
NC
3186 break;
3187 case OP_FTZERO:
3188 if (PL_statcache.st_size == 0)
8db8f6b6 3189 FT_RETURNYES;
f1cb2d48
NC
3190 break;
3191 case OP_FTSOCK:
3192 if (S_ISSOCK(PL_statcache.st_mode))
8db8f6b6 3193 FT_RETURNYES;
f1cb2d48
NC
3194 break;
3195 case OP_FTCHR:
3196 if (S_ISCHR(PL_statcache.st_mode))
8db8f6b6 3197 FT_RETURNYES;
f1cb2d48
NC
3198 break;
3199 case OP_FTBLK:
3200 if (S_ISBLK(PL_statcache.st_mode))
8db8f6b6 3201 FT_RETURNYES;
f1cb2d48
NC
3202 break;
3203 case OP_FTFILE:
3204 if (S_ISREG(PL_statcache.st_mode))
8db8f6b6 3205 FT_RETURNYES;
f1cb2d48
NC
3206 break;
3207 case OP_FTDIR:
3208 if (S_ISDIR(PL_statcache.st_mode))
8db8f6b6 3209 FT_RETURNYES;
f1cb2d48
NC
3210 break;
3211 case OP_FTPIPE:
3212 if (S_ISFIFO(PL_statcache.st_mode))
8db8f6b6 3213 FT_RETURNYES;
f1cb2d48 3214 break;
a0d0e21e 3215#ifdef S_ISUID
17ad201a
NC
3216 case OP_FTSUID:
3217 if (PL_statcache.st_mode & S_ISUID)
8db8f6b6 3218 FT_RETURNYES;
17ad201a 3219 break;
a0d0e21e 3220#endif
a0d0e21e 3221#ifdef S_ISGID
17ad201a
NC
3222 case OP_FTSGID:
3223 if (PL_statcache.st_mode & S_ISGID)
8db8f6b6 3224 FT_RETURNYES;
17ad201a
NC
3225 break;
3226#endif
3227#ifdef S_ISVTX
3228 case OP_FTSVTX:
3229 if (PL_statcache.st_mode & S_ISVTX)
8db8f6b6 3230 FT_RETURNYES;
17ad201a 3231 break;
a0d0e21e 3232#endif
17ad201a 3233 }
8db8f6b6 3234 FT_RETURNNO;
a0d0e21e
LW
3235}
3236
17ad201a 3237PP(pp_ftlink)
a0d0e21e 3238{
97aff369 3239 dVAR;
500ff13f 3240 I32 result;
07fe7c6a 3241
6f1401dc 3242 tryAMAGICftest_MG('l');
40c852de 3243 result = my_lstat_flags(0);
500ff13f 3244
a0d0e21e 3245 if (result < 0)
8db8f6b6 3246 FT_RETURNUNDEF;
17ad201a 3247 if (S_ISLNK(PL_statcache.st_mode))
8db8f6b6
FC
3248 FT_RETURNYES;
3249 FT_RETURNNO;
a0d0e21e
LW
3250}
3251
3252PP(pp_fttty)
3253{
97aff369 3254 dVAR;
a0d0e21e
LW
3255 int fd;
3256 GV *gv;
0784aae0 3257 char *name = NULL;
40c852de 3258 STRLEN namelen;
fb73857a 3259
6f1401dc 3260 tryAMAGICftest_MG('t');
07fe7c6a 3261
533c011a 3262 if (PL_op->op_flags & OPf_REF)
146174a9 3263 gv = cGVOP_gv;
e5e154d2 3264 else {
d2f67720 3265 SV *tmpsv = *PL_stack_sp;
e5e154d2 3266 if (!(gv = MAYBE_DEREF_GV_nomg(tmpsv))) {
40c852de
DM
3267 name = SvPV_nomg(tmpsv, namelen);
3268 gv = gv_fetchpvn_flags(name, namelen, SvUTF8(tmpsv), SVt_PVIO);
e5e154d2 3269 }
40c852de 3270 }
fb73857a 3271
a0d0e21e 3272 if (GvIO(gv) && IoIFP(GvIOp(gv)))
760ac839 3273 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
b6cb94c5 3274 else if (name && isDIGIT(*name))
40c852de 3275 fd = atoi(name);
a0d0e21e 3276 else
8db8f6b6 3277 FT_RETURNUNDEF;
6ad3d225 3278 if (PerlLIO_isatty(fd))
8db8f6b6
FC
3279 FT_RETURNYES;
3280 FT_RETURNNO;
a0d0e21e
LW
3281}
3282
a0d0e21e
LW
3283PP(pp_fttext)
3284{
97aff369 3285 dVAR;
a0d0e21e 3286 I32 i;
b66f3475 3287 SSize_t len;
a0d0e21e
LW
3288 I32 odd = 0;
3289 STDCHAR tbuf[512];
eb578fdb
KW
3290 STDCHAR *s;
3291 IO *io;
3292 SV *sv = NULL;
5f05dabc 3293 GV *gv;
146174a9 3294 PerlIO *fp;
a0d0e21e 3295
6f1401dc 3296 tryAMAGICftest_MG(PL_op->op_type == OP_FTTEXT ? 'T' : 'B');
07fe7c6a 3297
533c011a 3298 if (PL_op->op_flags & OPf_REF)
146174a9 3299 gv = cGVOP_gv;
d2c4d2d1 3300 else if ((PL_op->op_private & (OPpFT_STACKED|OPpFT_AFTER_t))
8db8f6b6 3301 == OPpFT_STACKED)
ba8182f8 3302 gv = PL_defgv;
d2c4d2d1 3303 else {
d2f67720 3304 sv = *PL_stack_sp;
d2c4d2d1 3305 gv = MAYBE_DEREF_GV_nomg(sv);
8db8f6b6 3306 }
5f05dabc
PP
3307
3308 if (gv) {
3280af22
NIS
3309 if (gv == PL_defgv) {
3310 if (PL_statgv)
bd5f6c01
FC
3311 io = SvTYPE(PL_statgv) == SVt_PVIO
3312 ? (IO *)PL_statgv
3313 : GvIO(PL_statgv);
a0d0e21e 3314 else {
a0d0e21e
LW
3315 goto really_filename;
3316 }
3317 }
3318 else {
3280af22 3319 PL_statgv = gv;
76f68e9b 3320 sv_setpvs(PL_statname, "");
3280af22 3321 io = GvIO(PL_statgv);
a0d0e21e 3322 }
eb4c377a 3323 PL_laststatval = -1;
21a64c3e 3324 PL_laststype = OP_STAT;
a0d0e21e 3325 if (io && IoIFP(io)) {
5f05dabc 3326 if (! PerlIO_has_base(IoIFP(io)))
cea2e8a9 3327 DIE(aTHX_ "-T and -B not implemented on filehandles");
3280af22
NIS
3328 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3329 if (PL_laststatval < 0)
8db8f6b6 3330 FT_RETURNUNDEF;
9cbac4c7 3331 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
533c011a 3332 if (PL_op->op_type == OP_FTTEXT)
8db8f6b6 3333 FT_RETURNNO;
a0d0e21e 3334 else
8db8f6b6 3335 FT_RETURNYES;
9cbac4c7 3336 }
a20bf0c3 3337 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
760ac839 3338 i = PerlIO_getc(IoIFP(io));
a0d0e21e 3339 if (i != EOF)
760ac839 3340 (void)PerlIO_ungetc(IoIFP(io),i);
a0d0e21e 3341 }
a20bf0c3 3342 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
8db8f6b6 3343 FT_RETURNYES;
a20bf0c3
JH
3344 len = PerlIO_get_bufsiz(IoIFP(io));
3345 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
760ac839
LW
3346 /* sfio can have large buffers - limit to 512 */
3347 if (len > 512)
3348 len = 512;
a0d0e21e
LW
3349 }
3350 else {
2ad48547 3351 SETERRNO(EBADF,RMS_IFI);
3f12cff4 3352 report_evil_fh(gv);
93189314 3353 SETERRNO(EBADF,RMS_IFI);
8db8f6b6 3354 FT_RETURNUNDEF;
a0d0e21e
LW
3355 }
3356 }
3357 else {
81e9306f 3358 sv_setpv(PL_statname, SvPV_nomg_const_nolen(sv));