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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__)
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LW
74extern int h_errno;
75#endif
76
77#ifdef HAS_PASSWD
78# ifdef I_PWD
79# include <pwd.h>
80# else
fd8cd3a3 81# if !defined(VMS)
20ce7b12
GS
82 struct passwd *getpwnam (char *);
83 struct passwd *getpwuid (Uid_t);
fd8cd3a3 84# endif
a0d0e21e 85# endif
28e8609d 86# ifdef HAS_GETPWENT
10bc17b6 87#ifndef getpwent
20ce7b12 88 struct passwd *getpwent (void);
c2a8f790 89#elif defined (VMS) && defined (my_getpwent)
9fa802f3 90 struct passwd *Perl_my_getpwent (pTHX);
10bc17b6 91#endif
28e8609d 92# endif
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
a4af207c
JH
182#include "reentr.h"
183
9cffb111
OS
184#ifdef __Lynx__
185/* Missing protos on LynxOS */
186void sethostent(int);
187void endhostent(void);
188void setnetent(int);
189void endnetent(void);
190void setprotoent(int);
191void endprotoent(void);
192void setservent(int);
193void endservent(void);
194#endif
195
faee0e31 196#undef PERL_EFF_ACCESS /* EFFective uid/gid ACCESS */
5ff3f7a4
GS
197
198/* F_OK unused: if stat() cannot find it... */
199
d7558cad 200#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
c955f117 201 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
d7558cad 202# define PERL_EFF_ACCESS(p,f) (access((p), (f) | EFF_ONLY_OK))
5ff3f7a4
GS
203#endif
204
d7558cad 205#if !defined(PERL_EFF_ACCESS) && defined(HAS_EACCESS)
3813c136 206# ifdef I_SYS_SECURITY
5ff3f7a4
GS
207# include <sys/security.h>
208# endif
c955f117
JH
209# ifdef ACC_SELF
210 /* HP SecureWare */
d7558cad 211# define PERL_EFF_ACCESS(p,f) (eaccess((p), (f), ACC_SELF))
c955f117
JH
212# else
213 /* SCO */
d7558cad 214# define PERL_EFF_ACCESS(p,f) (eaccess((p), (f)))
c955f117 215# endif
5ff3f7a4
GS
216#endif
217
d7558cad 218#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESSX) && defined(ACC_SELF)
c955f117 219 /* AIX */
d7558cad 220# define PERL_EFF_ACCESS(p,f) (accessx((p), (f), ACC_SELF))
5ff3f7a4
GS
221#endif
222
d7558cad
NC
223
224#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) \
327c3667
GS
225 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
226 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
5ff3f7a4 227/* The Hard Way. */
327c3667 228STATIC int
7f4774ae 229S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
ba106d47 230{
c4420975
AL
231 const Uid_t ruid = getuid();
232 const Uid_t euid = geteuid();
233 const Gid_t rgid = getgid();
234 const Gid_t egid = getegid();
5ff3f7a4
GS
235 int res;
236
5ff3f7a4 237#if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
cea2e8a9 238 Perl_croak(aTHX_ "switching effective uid is not implemented");
5ff3f7a4
GS
239#else
240#ifdef HAS_SETREUID
241 if (setreuid(euid, ruid))
242#else
243#ifdef HAS_SETRESUID
244 if (setresuid(euid, ruid, (Uid_t)-1))
245#endif
246#endif
dcbac5bb 247 /* diag_listed_as: entering effective %s failed */
cea2e8a9 248 Perl_croak(aTHX_ "entering effective uid failed");
5ff3f7a4
GS
249#endif
250
251#if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
cea2e8a9 252 Perl_croak(aTHX_ "switching effective gid is not implemented");
5ff3f7a4
GS
253#else
254#ifdef HAS_SETREGID
255 if (setregid(egid, rgid))
256#else
257#ifdef HAS_SETRESGID
258 if (setresgid(egid, rgid, (Gid_t)-1))
259#endif
260#endif
dcbac5bb 261 /* diag_listed_as: entering effective %s failed */
cea2e8a9 262 Perl_croak(aTHX_ "entering effective gid failed");
5ff3f7a4
GS
263#endif
264
265 res = access(path, mode);
266
267#ifdef HAS_SETREUID
268 if (setreuid(ruid, euid))
269#else
270#ifdef HAS_SETRESUID
271 if (setresuid(ruid, euid, (Uid_t)-1))
272#endif
273#endif
dcbac5bb 274 /* diag_listed_as: leaving effective %s failed */
cea2e8a9 275 Perl_croak(aTHX_ "leaving effective uid failed");
5ff3f7a4
GS
276
277#ifdef HAS_SETREGID
278 if (setregid(rgid, egid))
279#else
280#ifdef HAS_SETRESGID
281 if (setresgid(rgid, egid, (Gid_t)-1))
282#endif
283#endif
dcbac5bb 284 /* diag_listed_as: leaving effective %s failed */
cea2e8a9 285 Perl_croak(aTHX_ "leaving effective gid failed");
5ff3f7a4
GS
286
287 return res;
288}
d6864606 289# define PERL_EFF_ACCESS(p,f) (S_emulate_eaccess(aTHX_ (p), (f)))
5ff3f7a4
GS
290#endif
291
a0d0e21e
LW
292PP(pp_backtick)
293{
20b7effb 294 dSP; dTARGET;
760ac839 295 PerlIO *fp;
1b6737cc 296 const char * const tmps = POPpconstx;
f54cb97a 297 const I32 gimme = GIMME_V;
e1ec3a88 298 const char *mode = "r";
54310121 299
a0d0e21e 300 TAINT_PROPER("``");
16fe6d59
GS
301 if (PL_op->op_private & OPpOPEN_IN_RAW)
302 mode = "rb";
303 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
304 mode = "rt";
2fbb330f 305 fp = PerlProc_popen(tmps, mode);
a0d0e21e 306 if (fp) {
11bcd5da 307 const char * const type = Perl_PerlIO_context_layers(aTHX_ NULL);
ac27b0f5
NIS
308 if (type && *type)
309 PerlIO_apply_layers(aTHX_ fp,mode,type);
310
54310121 311 if (gimme == G_VOID) {
96827780
MB
312 char tmpbuf[256];
313 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
a79db61d 314 NOOP;
54310121
PP
315 }
316 else if (gimme == G_SCALAR) {
d343c3ef 317 ENTER_with_name("backtick");
75af1a9c 318 SAVESPTR(PL_rs);
fa326138 319 PL_rs = &PL_sv_undef;
76f68e9b 320 sv_setpvs(TARG, ""); /* note that this preserves previous buffer */
bd61b366 321 while (sv_gets(TARG, fp, SvCUR(TARG)) != NULL)
a79db61d 322 NOOP;
d343c3ef 323 LEAVE_with_name("backtick");
a0d0e21e 324 XPUSHs(TARG);
aa689395 325 SvTAINTED_on(TARG);
a0d0e21e
LW
326 }
327 else {
a0d0e21e 328 for (;;) {
561b68a9 329 SV * const sv = newSV(79);
bd61b366 330 if (sv_gets(sv, fp, 0) == NULL) {
a0d0e21e
LW
331 SvREFCNT_dec(sv);
332 break;
333 }
6e449a3a 334 mXPUSHs(sv);
a0d0e21e 335 if (SvLEN(sv) - SvCUR(sv) > 20) {
1da4ca5f 336 SvPV_shrink_to_cur(sv);
a0d0e21e 337 }
aa689395 338 SvTAINTED_on(sv);
a0d0e21e
LW
339 }
340 }
2fbb330f 341 STATUS_NATIVE_CHILD_SET(PerlProc_pclose(fp));
aa689395 342 TAINT; /* "I believe that this is not gratuitous!" */
a0d0e21e
LW
343 }
344 else {
37038d91 345 STATUS_NATIVE_CHILD_SET(-1);
54310121 346 if (gimme == G_SCALAR)
a0d0e21e
LW
347 RETPUSHUNDEF;
348 }
349
350 RETURN;
351}
352
353PP(pp_glob)
354{
355 OP *result;
9426e1a5 356 dSP;
9423a867
FC
357 GV * const gv = (PL_op->op_flags & OPf_SPECIAL) ? NULL : (GV *)POPs;
358
359 PUTBACK;
360
151cea25
FC
361 /* make a copy of the pattern if it is gmagical, to ensure that magic
362 * is called once and only once */
9423a867 363 if (SvGMAGICAL(TOPs)) TOPs = sv_2mortal(newSVsv(TOPs));
9426e1a5 364
fc99edcf 365 tryAMAGICunTARGETlist(iter_amg, (PL_op->op_flags & OPf_SPECIAL));
d1bea3d8
DM
366
367 if (PL_op->op_flags & OPf_SPECIAL) {
368 /* call Perl-level glob function instead. Stack args are:
9423a867 369 * MARK, wildcard
d1bea3d8
DM
370 * and following OPs should be: gv(CORE::GLOBAL::glob), entersub
371 * */
372 return NORMAL;
373 }
d67594ff 374 if (PL_globhook) {
d67594ff
FC
375 PL_globhook(aTHX);
376 return NORMAL;
377 }
f5284f61 378
71686f12
GS
379 /* Note that we only ever get here if File::Glob fails to load
380 * without at the same time croaking, for some reason, or if
381 * perl was built with PERL_EXTERNAL_GLOB */
382
d343c3ef 383 ENTER_with_name("glob");
a0d0e21e 384
c90c0ff4 385#ifndef VMS
284167a5 386 if (TAINTING_get) {
7bac28a0
PP
387 /*
388 * The external globbing program may use things we can't control,
389 * so for security reasons we must assume the worst.
390 */
391 TAINT;
22c35a8c 392 taint_proper(PL_no_security, "glob");
7bac28a0 393 }
c90c0ff4 394#endif /* !VMS */
7bac28a0 395
3280af22 396 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
9423a867 397 PL_last_in_gv = gv;
a0d0e21e 398
3280af22 399 SAVESPTR(PL_rs); /* This is not permanent, either. */
84bafc02 400 PL_rs = newSVpvs_flags("\000", SVs_TEMP);
c07a80fd
PP
401#ifndef DOSISH
402#ifndef CSH
6b88bc9c 403 *SvPVX(PL_rs) = '\n';
a0d0e21e 404#endif /* !CSH */
55497cff 405#endif /* !DOSISH */
c07a80fd 406
a0d0e21e 407 result = do_readline();
d343c3ef 408 LEAVE_with_name("glob");
a0d0e21e
LW
409 return result;
410}
411
a0d0e21e
LW
412PP(pp_rcatline)
413{
146174a9 414 PL_last_in_gv = cGVOP_gv;
a0d0e21e
LW
415 return do_readline();
416}
417
418PP(pp_warn)
419{
20b7effb 420 dSP; dMARK;
c5df3096 421 SV *exsv;
06bf62c7 422 STRLEN len;
b59aed67 423 if (SP - MARK > 1) {
a0d0e21e 424 dTARGET;
3280af22 425 do_join(TARG, &PL_sv_no, MARK, SP);
c5df3096 426 exsv = TARG;
a0d0e21e
LW
427 SP = MARK + 1;
428 }
b59aed67 429 else if (SP == MARK) {
c5df3096 430 exsv = &PL_sv_no;
b59aed67 431 EXTEND(SP, 1);
83f957ec 432 SP = MARK + 1;
b59aed67 433 }
a0d0e21e 434 else {
c5df3096 435 exsv = TOPs;
ef5fe392 436 if (SvGMAGICAL(exsv)) exsv = sv_mortalcopy(exsv);
a0d0e21e 437 }
06bf62c7 438
72d74926 439 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
c5df3096
Z
440 /* well-formed exception supplied */
441 }
c5df3096 442 else {
eed484f9
DD
443 SV * const errsv = ERRSV;
444 SvGETMAGIC(errsv);
445 if (SvROK(errsv)) {
446 if (SvGMAGICAL(errsv)) {
ef5fe392 447 exsv = sv_newmortal();
eed484f9 448 sv_setsv_nomg(exsv, errsv);
ef5fe392 449 }
eed484f9 450 else exsv = errsv;
ef5fe392 451 }
eed484f9 452 else if (SvPOKp(errsv) ? SvCUR(errsv) : SvNIOKp(errsv)) {
ef5fe392 453 exsv = sv_newmortal();
eed484f9 454 sv_setsv_nomg(exsv, errsv);
ef5fe392
FC
455 sv_catpvs(exsv, "\t...caught");
456 }
457 else {
c5df3096 458 exsv = newSVpvs_flags("Warning: something's wrong", SVs_TEMP);
ef5fe392 459 }
c5df3096 460 }
3b7f69a5
FC
461 if (SvROK(exsv) && !PL_warnhook)
462 Perl_warn(aTHX_ "%"SVf, SVfARG(exsv));
463 else warn_sv(exsv);
a0d0e21e
LW
464 RETSETYES;
465}
466
467PP(pp_die)
468{
20b7effb 469 dSP; dMARK;
c5df3096 470 SV *exsv;
06bf62c7 471 STRLEN len;
96e176bf 472#ifdef VMS
97124ef6
FC
473 VMSISH_HUSHED =
474 VMSISH_HUSHED || (PL_curcop->op_private & OPpHUSH_VMSISH);
96e176bf 475#endif
a0d0e21e
LW
476 if (SP - MARK != 1) {
477 dTARGET;
3280af22 478 do_join(TARG, &PL_sv_no, MARK, SP);
c5df3096 479 exsv = TARG;
a0d0e21e
LW
480 SP = MARK + 1;
481 }
482 else {
c5df3096 483 exsv = TOPs;
a0d0e21e 484 }
c5df3096 485
72d74926 486 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
c5df3096
Z
487 /* well-formed exception supplied */
488 }
eed484f9
DD
489 else {
490 SV * const errsv = ERRSV;
8b3945e7 491 SvGETMAGIC(errsv);
eed484f9
DD
492 if (SvROK(errsv)) {
493 exsv = errsv;
494 if (sv_isobject(exsv)) {
495 HV * const stash = SvSTASH(SvRV(exsv));
496 GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
497 if (gv) {
498 SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
499 SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
500 EXTEND(SP, 3);
501 PUSHMARK(SP);
502 PUSHs(exsv);
503 PUSHs(file);
504 PUSHs(line);
505 PUTBACK;
506 call_sv(MUTABLE_SV(GvCV(gv)),
507 G_SCALAR|G_EVAL|G_KEEPERR);
508 exsv = sv_mortalcopy(*PL_stack_sp--);
509 }
05423cc9 510 }
4e6ea2c3 511 }
8b3945e7 512 else if (SvPOK(errsv) && SvCUR(errsv)) {
eed484f9
DD
513 exsv = sv_mortalcopy(errsv);
514 sv_catpvs(exsv, "\t...propagated");
515 }
516 else {
517 exsv = newSVpvs_flags("Died", SVs_TEMP);
518 }
c5df3096 519 }
81d52ecd 520 die_sv(exsv);
a25b5927 521 NOT_REACHED; /* NOTREACHED */
263fdd5b 522 return NULL; /* avoid missing return from non-void function warning */
a0d0e21e
LW
523}
524
525/* I/O. */
526
d682515d 527OP *
3e0cb5de 528Perl_tied_method(pTHX_ SV *methname, SV **sp, SV *const sv,
d682515d 529 const MAGIC *const mg, const U32 flags, U32 argc, ...)
6bcca55b 530{
d8ef3a16
DM
531 SV **orig_sp = sp;
532 I32 ret_args;
533
d682515d 534 PERL_ARGS_ASSERT_TIED_METHOD;
6bcca55b
NC
535
536 /* Ensure that our flag bits do not overlap. */
d682515d
NC
537 assert((TIED_METHOD_MORTALIZE_NOT_NEEDED & G_WANT) == 0);
538 assert((TIED_METHOD_ARGUMENTS_ON_STACK & G_WANT) == 0);
94bc412f 539 assert((TIED_METHOD_SAY & G_WANT) == 0);
6bcca55b 540
d8ef3a16
DM
541 PUTBACK; /* sp is at *foot* of args, so this pops args from old stack */
542 PUSHSTACKi(PERLSI_MAGIC);
543 EXTEND(SP, argc+1); /* object + args */
6bcca55b 544 PUSHMARK(sp);
d682515d 545 PUSHs(SvTIED_obj(sv, mg));
d8ef3a16
DM
546 if (flags & TIED_METHOD_ARGUMENTS_ON_STACK) {
547 Copy(orig_sp + 2, sp + 1, argc, SV*); /* copy args to new stack */
1a8c1d59 548 sp += argc;
d8ef3a16 549 }
1a8c1d59 550 else if (argc) {
d682515d
NC
551 const U32 mortalize_not_needed
552 = flags & TIED_METHOD_MORTALIZE_NOT_NEEDED;
6bcca55b 553 va_list args;
0d5509eb 554 va_start(args, argc);
6bcca55b
NC
555 do {
556 SV *const arg = va_arg(args, SV *);
557 if(mortalize_not_needed)
558 PUSHs(arg);
559 else
560 mPUSHs(arg);
561 } while (--argc);
562 va_end(args);
563 }
564
565 PUTBACK;
d682515d 566 ENTER_with_name("call_tied_method");
94bc412f
NC
567 if (flags & TIED_METHOD_SAY) {
568 /* local $\ = "\n" */
569 SAVEGENERICSV(PL_ors_sv);
570 PL_ors_sv = newSVpvs("\n");
571 }
3e0cb5de 572 ret_args = call_sv(methname, (flags & G_WANT)|G_METHOD_NAMED);
d8ef3a16
DM
573 SPAGAIN;
574 orig_sp = sp;
575 POPSTACK;
576 SPAGAIN;
577 if (ret_args) { /* copy results back to original stack */
578 EXTEND(sp, ret_args);
579 Copy(orig_sp - ret_args + 1, sp + 1, ret_args, SV*);
580 sp += ret_args;
581 PUTBACK;
582 }
d682515d 583 LEAVE_with_name("call_tied_method");
6bcca55b
NC
584 return NORMAL;
585}
586
d682515d
NC
587#define tied_method0(a,b,c,d) \
588 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,0)
589#define tied_method1(a,b,c,d,e) \
590 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,1,e)
591#define tied_method2(a,b,c,d,e,f) \
592 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,2,e,f)
6bcca55b 593
a0d0e21e
LW
594PP(pp_open)
595{
20b7effb 596 dSP;
a567e93b
NIS
597 dMARK; dORIGMARK;
598 dTARGET;
a0d0e21e 599 SV *sv;
5b468f54 600 IO *io;
5c144d81 601 const char *tmps;
a0d0e21e 602 STRLEN len;
a567e93b 603 bool ok;
a0d0e21e 604
159b6efe 605 GV * const gv = MUTABLE_GV(*++MARK);
c4420975 606
13be902c 607 if (!isGV(gv) && !(SvTYPE(gv) == SVt_PVLV && isGV_with_GP(gv)))
cea2e8a9 608 DIE(aTHX_ PL_no_usym, "filehandle");
abc718f2 609
a79db61d 610 if ((io = GvIOp(gv))) {
a5e1d062 611 const MAGIC *mg;
36477c24 612 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
853846ea 613
a2a5de95 614 if (IoDIRP(io))
d1d15184 615 Perl_ck_warner_d(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
d0c0e7dd
FC
616 "Opening dirhandle %"HEKf" also as a file",
617 HEKfARG(GvENAME_HEK(gv)));
abc718f2 618
ad64d0ec 619 mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
c4420975
AL
620 if (mg) {
621 /* Method's args are same as ours ... */
622 /* ... except handle is replaced by the object */
3e0cb5de 623 return Perl_tied_method(aTHX_ SV_CONST(OPEN), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC
624 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
625 sp - mark);
c4420975 626 }
4592e6ca
NIS
627 }
628
a567e93b
NIS
629 if (MARK < SP) {
630 sv = *++MARK;
631 }
632 else {
35a08ec7 633 sv = GvSVn(gv);
a567e93b
NIS
634 }
635
5c144d81 636 tmps = SvPV_const(sv, len);
d5eb9a46 637 ok = do_open6(gv, tmps, len, NULL, MARK+1, (SP-MARK));
a567e93b
NIS
638 SP = ORIGMARK;
639 if (ok)
3280af22
NIS
640 PUSHi( (I32)PL_forkprocess );
641 else if (PL_forkprocess == 0) /* we are a new child */
a0d0e21e
LW
642 PUSHi(0);
643 else
644 RETPUSHUNDEF;
645 RETURN;
646}
647
648PP(pp_close)
649{
20b7effb 650 dSP;
30901a8a
FC
651 GV * const gv =
652 MAXARG == 0 || (!TOPs && !POPs) ? PL_defoutgv : MUTABLE_GV(POPs);
1d603a67 653
2addaaf3
NC
654 if (MAXARG == 0)
655 EXTEND(SP, 1);
656
a79db61d
AL
657 if (gv) {
658 IO * const io = GvIO(gv);
659 if (io) {
a5e1d062 660 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 661 if (mg) {
3e0cb5de 662 return tied_method0(SV_CONST(CLOSE), SP, MUTABLE_SV(io), mg);
a79db61d
AL
663 }
664 }
1d603a67 665 }
54310121 666 PUSHs(boolSV(do_close(gv, TRUE)));
a0d0e21e
LW
667 RETURN;
668}
669
670PP(pp_pipe_op)
671{
a0d0e21e 672#ifdef HAS_PIPE
9cad6237 673 dSP;
eb578fdb
KW
674 IO *rstio;
675 IO *wstio;
a0d0e21e
LW
676 int fd[2];
677
159b6efe
NC
678 GV * const wgv = MUTABLE_GV(POPs);
679 GV * const rgv = MUTABLE_GV(POPs);
a0d0e21e 680
8a6c0fcb
FC
681 assert (isGV_with_GP(rgv));
682 assert (isGV_with_GP(wgv));
a0d0e21e 683 rstio = GvIOn(rgv);
a0d0e21e
LW
684 if (IoIFP(rstio))
685 do_close(rgv, FALSE);
49225470
DD
686
687 wstio = GvIOn(wgv);
a0d0e21e
LW
688 if (IoIFP(wstio))
689 do_close(wgv, FALSE);
690
6ad3d225 691 if (PerlProc_pipe(fd) < 0)
a0d0e21e
LW
692 goto badexit;
693
460c8493
IZ
694 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
695 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
b5ac89c3 696 IoOFP(rstio) = IoIFP(rstio);
a0d0e21e 697 IoIFP(wstio) = IoOFP(wstio);
50952442
JH
698 IoTYPE(rstio) = IoTYPE_RDONLY;
699 IoTYPE(wstio) = IoTYPE_WRONLY;
a0d0e21e
LW
700
701 if (!IoIFP(rstio) || !IoOFP(wstio)) {
a79db61d
AL
702 if (IoIFP(rstio))
703 PerlIO_close(IoIFP(rstio));
704 else
705 PerlLIO_close(fd[0]);
706 if (IoOFP(wstio))
707 PerlIO_close(IoOFP(wstio));
708 else
709 PerlLIO_close(fd[1]);
a0d0e21e
LW
710 goto badexit;
711 }
4771b018 712#if defined(HAS_FCNTL) && defined(F_SETFD)
375ed12a
JH
713 /* ensure close-on-exec */
714 if ((fcntl(fd[0], F_SETFD,fd[0] > PL_maxsysfd) < 0) ||
715 (fcntl(fd[1], F_SETFD,fd[1] > PL_maxsysfd) < 0))
716 goto badexit;
4771b018 717#endif
a0d0e21e
LW
718 RETPUSHYES;
719
720badexit:
721 RETPUSHUNDEF;
722#else
cea2e8a9 723 DIE(aTHX_ PL_no_func, "pipe");
a0d0e21e
LW
724#endif
725}
726
727PP(pp_fileno)
728{
20b7effb 729 dSP; dTARGET;
a0d0e21e
LW
730 GV *gv;
731 IO *io;
760ac839 732 PerlIO *fp;
a5e1d062 733 const MAGIC *mg;
4592e6ca 734
a0d0e21e
LW
735 if (MAXARG < 1)
736 RETPUSHUNDEF;
159b6efe 737 gv = MUTABLE_GV(POPs);
9c9f25b8 738 io = GvIO(gv);
4592e6ca 739
9c9f25b8 740 if (io
ad64d0ec 741 && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar)))
5b468f54 742 {
3e0cb5de 743 return tied_method0(SV_CONST(FILENO), SP, MUTABLE_SV(io), mg);
4592e6ca
NIS
744 }
745
9c9f25b8 746 if (!io || !(fp = IoIFP(io))) {
c289d2f7
JH
747 /* Can't do this because people seem to do things like
748 defined(fileno($foo)) to check whether $foo is a valid fh.
51087808
NC
749
750 report_evil_fh(gv);
c289d2f7 751 */
a0d0e21e 752 RETPUSHUNDEF;
c289d2f7
JH
753 }
754
760ac839 755 PUSHi(PerlIO_fileno(fp));
a0d0e21e
LW
756 RETURN;
757}
758
759PP(pp_umask)
760{
27da23d5 761 dSP;
d7e492a4 762#ifdef HAS_UMASK
27da23d5 763 dTARGET;
761237fe 764 Mode_t anum;
a0d0e21e 765
58536d15 766 if (MAXARG < 1 || (!TOPs && !POPs)) {
b0b546b3
GA
767 anum = PerlLIO_umask(022);
768 /* setting it to 022 between the two calls to umask avoids
769 * to have a window where the umask is set to 0 -- meaning
770 * that another thread could create world-writeable files. */
771 if (anum != 022)
772 (void)PerlLIO_umask(anum);
a0d0e21e
LW
773 }
774 else
6ad3d225 775 anum = PerlLIO_umask(POPi);
a0d0e21e
LW
776 TAINT_PROPER("umask");
777 XPUSHi(anum);
778#else
a0288114 779 /* Only DIE if trying to restrict permissions on "user" (self).
eec2d3df
GS
780 * Otherwise it's harmless and more useful to just return undef
781 * since 'group' and 'other' concepts probably don't exist here. */
58536d15 782 if (MAXARG >= 1 && (TOPs||POPs) && (POPi & 0700))
cea2e8a9 783 DIE(aTHX_ "umask not implemented");
6b88bc9c 784 XPUSHs(&PL_sv_undef);
a0d0e21e
LW
785#endif
786 RETURN;
787}
788
789PP(pp_binmode)
790{
20b7effb 791 dSP;
a0d0e21e
LW
792 GV *gv;
793 IO *io;
760ac839 794 PerlIO *fp;
a0714e2c 795 SV *discp = NULL;
a0d0e21e
LW
796
797 if (MAXARG < 1)
798 RETPUSHUNDEF;
60382766 799 if (MAXARG > 1) {
16fe6d59 800 discp = POPs;
60382766 801 }
a0d0e21e 802
159b6efe 803 gv = MUTABLE_GV(POPs);
9c9f25b8 804 io = GvIO(gv);
4592e6ca 805
9c9f25b8 806 if (io) {
a5e1d062 807 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 808 if (mg) {
bc0c81ca
NC
809 /* This takes advantage of the implementation of the varargs
810 function, which I don't think that the optimiser will be able to
811 figure out. Although, as it's a static function, in theory it
812 could. */
3e0cb5de 813 return Perl_tied_method(aTHX_ SV_CONST(BINMODE), SP, MUTABLE_SV(io), mg,
d682515d
NC
814 G_SCALAR|TIED_METHOD_MORTALIZE_NOT_NEEDED,
815 discp ? 1 : 0, discp);
a79db61d 816 }
4592e6ca 817 }
a0d0e21e 818
9c9f25b8 819 if (!io || !(fp = IoIFP(io))) {
51087808 820 report_evil_fh(gv);
b5fe5ca2 821 SETERRNO(EBADF,RMS_IFI);
50f846a7
SC
822 RETPUSHUNDEF;
823 }
a0d0e21e 824
40d98b49 825 PUTBACK;
f0a78170 826 {
a79b25b7
VP
827 STRLEN len = 0;
828 const char *d = NULL;
829 int mode;
830 if (discp)
831 d = SvPV_const(discp, len);
832 mode = mode_from_discipline(d, len);
f0a78170
NC
833 if (PerlIO_binmode(aTHX_ fp, IoTYPE(io), mode, d)) {
834 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
835 if (!PerlIO_binmode(aTHX_ IoOFP(io), IoTYPE(io), mode, d)) {
836 SPAGAIN;
837 RETPUSHUNDEF;
838 }
839 }
840 SPAGAIN;
841 RETPUSHYES;
842 }
843 else {
844 SPAGAIN;
845 RETPUSHUNDEF;
38af81ff 846 }
40d98b49 847 }
a0d0e21e
LW
848}
849
850PP(pp_tie)
851{
20b7effb 852 dSP; dMARK;
a0d0e21e 853 HV* stash;
07822e36 854 GV *gv = NULL;
a0d0e21e 855 SV *sv;
1df70142 856 const I32 markoff = MARK - PL_stack_base;
e1ec3a88 857 const char *methname;
14befaf4 858 int how = PERL_MAGIC_tied;
e336de0d 859 U32 items;
c4420975 860 SV *varsv = *++MARK;
a0d0e21e 861
6b05c17a
NIS
862 switch(SvTYPE(varsv)) {
863 case SVt_PVHV:
aec0c0cc
FC
864 {
865 HE *entry;
6b05c17a 866 methname = "TIEHASH";
aec0c0cc
FC
867 if (HvLAZYDEL(varsv) && (entry = HvEITER((HV *)varsv))) {
868 HvLAZYDEL_off(varsv);
869 hv_free_ent((HV *)varsv, entry);
870 }
85fbaab2 871 HvEITER_set(MUTABLE_HV(varsv), 0);
6b05c17a 872 break;
aec0c0cc 873 }
6b05c17a
NIS
874 case SVt_PVAV:
875 methname = "TIEARRAY";
ce65bc73
FC
876 if (!AvREAL(varsv)) {
877 if (!AvREIFY(varsv))
878 Perl_croak(aTHX_ "Cannot tie unreifiable array");
879 av_clear((AV *)varsv);
880 AvREIFY_off(varsv);
881 AvREAL_on(varsv);
882 }
6b05c17a
NIS
883 break;
884 case SVt_PVGV:
13be902c 885 case SVt_PVLV:
8bb5f786 886 if (isGV_with_GP(varsv) && !SvFAKE(varsv)) {
6e592b3a
BM
887 methname = "TIEHANDLE";
888 how = PERL_MAGIC_tiedscalar;
889 /* For tied filehandles, we apply tiedscalar magic to the IO
890 slot of the GP rather than the GV itself. AMS 20010812 */
891 if (!GvIOp(varsv))
892 GvIOp(varsv) = newIO();
ad64d0ec 893 varsv = MUTABLE_SV(GvIOp(varsv));
6e592b3a
BM
894 break;
895 }
13733cde
FC
896 if (SvTYPE(varsv) == SVt_PVLV && LvTYPE(varsv) == 'y') {
897 vivify_defelem(varsv);
898 varsv = LvTARG(varsv);
899 }
924ba076 900 /* FALLTHROUGH */
6b05c17a
NIS
901 default:
902 methname = "TIESCALAR";
14befaf4 903 how = PERL_MAGIC_tiedscalar;
6b05c17a
NIS
904 break;
905 }
e336de0d 906 items = SP - MARK++;
a91d1d42 907 if (sv_isobject(*MARK)) { /* Calls GET magic. */
d343c3ef 908 ENTER_with_name("call_TIE");
e788e7d3 909 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 910 PUSHMARK(SP);
eb160463 911 EXTEND(SP,(I32)items);
e336de0d
GS
912 while (items--)
913 PUSHs(*MARK++);
914 PUTBACK;
864dbfa3 915 call_method(methname, G_SCALAR);
301e8125 916 }
6b05c17a 917 else {
086d2913
NC
918 /* Can't use call_method here, else this: fileno FOO; tie @a, "FOO"
919 * will attempt to invoke IO::File::TIEARRAY, with (best case) the
920 * wrong error message, and worse case, supreme action at a distance.
921 * (Sorry obfuscation writers. You're not going to be given this one.)
6b05c17a 922 */
4886938f
BF
923 stash = gv_stashsv(*MARK, 0);
924 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
35c1215d 925 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
a91d1d42 926 methname, SVfARG(SvOK(*MARK) ? *MARK : &PL_sv_no));
6b05c17a 927 }
d343c3ef 928 ENTER_with_name("call_TIE");
e788e7d3 929 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 930 PUSHMARK(SP);
eb160463 931 EXTEND(SP,(I32)items);
e336de0d
GS
932 while (items--)
933 PUSHs(*MARK++);
934 PUTBACK;
ad64d0ec 935 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
6b05c17a 936 }
a0d0e21e
LW
937 SPAGAIN;
938
939 sv = TOPs;
d3acc0f7 940 POPSTACK;
a0d0e21e 941 if (sv_isobject(sv)) {
33c27489 942 sv_unmagic(varsv, how);
ae21d580 943 /* Croak if a self-tie on an aggregate is attempted. */
b881518d 944 if (varsv == SvRV(sv) &&
d87ebaca
YST
945 (SvTYPE(varsv) == SVt_PVAV ||
946 SvTYPE(varsv) == SVt_PVHV))
ae21d580
JH
947 Perl_croak(aTHX_
948 "Self-ties of arrays and hashes are not supported");
a0714e2c 949 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
a0d0e21e 950 }
d343c3ef 951 LEAVE_with_name("call_TIE");
3280af22 952 SP = PL_stack_base + markoff;
a0d0e21e
LW
953 PUSHs(sv);
954 RETURN;
955}
956
957PP(pp_untie)
958{
20b7effb 959 dSP;
5b468f54 960 MAGIC *mg;
33c27489 961 SV *sv = POPs;
1df70142 962 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 963 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
55497cff 964
ca0d4ed9 965 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
5b468f54
AMS
966 RETPUSHYES;
967
13733cde
FC
968 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y' &&
969 !(sv = defelem_target(sv, NULL))) RETPUSHUNDEF;
970
65eba18f 971 if ((mg = SvTIED_mg(sv, how))) {
1b6737cc 972 SV * const obj = SvRV(SvTIED_obj(sv, mg));
fa2b88e0 973 if (obj) {
c4420975 974 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
0bd48802 975 CV *cv;
c4420975 976 if (gv && isGV(gv) && (cv = GvCV(gv))) {
fa2b88e0 977 PUSHMARK(SP);
c33ef3ac 978 PUSHs(SvTIED_obj(MUTABLE_SV(gv), mg));
6e449a3a 979 mXPUSHi(SvREFCNT(obj) - 1);
fa2b88e0 980 PUTBACK;
d343c3ef 981 ENTER_with_name("call_UNTIE");
ad64d0ec 982 call_sv(MUTABLE_SV(cv), G_VOID);
d343c3ef 983 LEAVE_with_name("call_UNTIE");
fa2b88e0
JS
984 SPAGAIN;
985 }
a2a5de95
NC
986 else if (mg && SvREFCNT(obj) > 1) {
987 Perl_ck_warner(aTHX_ packWARN(WARN_UNTIE),
988 "untie attempted while %"UVuf" inner references still exist",
989 (UV)SvREFCNT(obj) - 1 ) ;
c4420975 990 }
cbdc8872
PP
991 }
992 }
38193a09 993 sv_unmagic(sv, how) ;
55497cff 994 RETPUSHYES;
a0d0e21e
LW
995}
996
c07a80fd
PP
997PP(pp_tied)
998{
39644a26 999 dSP;
1b6737cc 1000 const MAGIC *mg;
b3cf4821 1001 dTOPss;
1df70142 1002 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 1003 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
5b468f54 1004
4be76e1f 1005 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
b3cf4821 1006 goto ret_undef;
c07a80fd 1007
13733cde 1008 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y' &&
b3cf4821 1009 !(sv = defelem_target(sv, NULL))) goto ret_undef;
13733cde 1010
155aba94 1011 if ((mg = SvTIED_mg(sv, how))) {
b3cf4821
DD
1012 SETs(SvTIED_obj(sv, mg));
1013 return NORMAL; /* PUTBACK not needed, pp_tied never moves SP */
c07a80fd 1014 }
b3cf4821
DD
1015 ret_undef:
1016 SETs(&PL_sv_undef);
1017 return NORMAL;
c07a80fd
PP
1018}
1019
a0d0e21e
LW
1020PP(pp_dbmopen)
1021{
20b7effb 1022 dSP;
a0d0e21e
LW
1023 dPOPPOPssrl;
1024 HV* stash;
07822e36 1025 GV *gv = NULL;
a0d0e21e 1026
85fbaab2 1027 HV * const hv = MUTABLE_HV(POPs);
84bafc02 1028 SV * const sv = newSVpvs_flags("AnyDBM_File", SVs_TEMP);
da51bb9b 1029 stash = gv_stashsv(sv, 0);
8ebc5c01 1030 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
a0d0e21e 1031 PUTBACK;
864dbfa3 1032 require_pv("AnyDBM_File.pm");
a0d0e21e 1033 SPAGAIN;
eff494dd 1034 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH")))
cea2e8a9 1035 DIE(aTHX_ "No dbm on this machine");
a0d0e21e
LW
1036 }
1037
57d3b86d 1038 ENTER;
924508f0 1039 PUSHMARK(SP);
6b05c17a 1040
924508f0 1041 EXTEND(SP, 5);
a0d0e21e
LW
1042 PUSHs(sv);
1043 PUSHs(left);
1044 if (SvIV(right))
6e449a3a 1045 mPUSHu(O_RDWR|O_CREAT);
a0d0e21e 1046 else
480e0d3c 1047 {
6e449a3a 1048 mPUSHu(O_RDWR);
480e0d3c
FC
1049 if (!SvOK(right)) right = &PL_sv_no;
1050 }
a0d0e21e 1051 PUSHs(right);
57d3b86d 1052 PUTBACK;
ad64d0ec 1053 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
a0d0e21e
LW
1054 SPAGAIN;
1055
1056 if (!sv_isobject(TOPs)) {
924508f0
GS
1057 SP--;
1058 PUSHMARK(SP);
a0d0e21e
LW
1059 PUSHs(sv);
1060 PUSHs(left);
6e449a3a 1061 mPUSHu(O_RDONLY);
a0d0e21e 1062 PUSHs(right);
a0d0e21e 1063 PUTBACK;
ad64d0ec 1064 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
a0d0e21e
LW
1065 SPAGAIN;
1066 }
1067
6b05c17a 1068 if (sv_isobject(TOPs)) {
ad64d0ec
NC
1069 sv_unmagic(MUTABLE_SV(hv), PERL_MAGIC_tied);
1070 sv_magic(MUTABLE_SV(hv), TOPs, PERL_MAGIC_tied, NULL, 0);
6b05c17a 1071 }
a0d0e21e
LW
1072 LEAVE;
1073 RETURN;
1074}
1075
a0d0e21e
LW
1076PP(pp_sselect)
1077{
a0d0e21e 1078#ifdef HAS_SELECT
20b7effb 1079 dSP; dTARGET;
eb578fdb
KW
1080 I32 i;
1081 I32 j;
1082 char *s;
1083 SV *sv;
65202027 1084 NV value;
a0d0e21e
LW
1085 I32 maxlen = 0;
1086 I32 nfound;
1087 struct timeval timebuf;
1088 struct timeval *tbuf = &timebuf;
1089 I32 growsize;
1090 char *fd_sets[4];
1091#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1092 I32 masksize;
1093 I32 offset;
1094 I32 k;
1095
1096# if BYTEORDER & 0xf0000
1097# define ORDERBYTE (0x88888888 - BYTEORDER)
1098# else
1099# define ORDERBYTE (0x4444 - BYTEORDER)
1100# endif
1101
1102#endif
1103
1104 SP -= 4;
1105 for (i = 1; i <= 3; i++) {
c4420975 1106 SV * const sv = SP[i];
9d6d5a79 1107 SvGETMAGIC(sv);
15547071
GA
1108 if (!SvOK(sv))
1109 continue;
ba3062ae
FC
1110 if (SvREADONLY(sv)) {
1111 if (!(SvPOK(sv) && SvCUR(sv) == 0))
cb077ed2 1112 Perl_croak_no_modify();
ba3062ae
FC
1113 }
1114 else if (SvIsCOW(sv)) sv_force_normal_flags(sv, 0);
4ef2275c 1115 if (!SvPOK(sv)) {
9d6d5a79
FC
1116 if (!SvPOKp(sv))
1117 Perl_ck_warner(aTHX_ packWARN(WARN_MISC),
1118 "Non-string passed as bitmask");
1119 SvPV_force_nomg_nolen(sv); /* force string conversion */
4ef2275c 1120 }
729c079f 1121 j = SvCUR(sv);
a0d0e21e
LW
1122 if (maxlen < j)
1123 maxlen = j;
1124 }
1125
5ff3f7a4 1126/* little endians can use vecs directly */
e366b469 1127#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
5ff3f7a4 1128# ifdef NFDBITS
a0d0e21e 1129
5ff3f7a4
GS
1130# ifndef NBBY
1131# define NBBY 8
1132# endif
a0d0e21e
LW
1133
1134 masksize = NFDBITS / NBBY;
5ff3f7a4 1135# else
a0d0e21e 1136 masksize = sizeof(long); /* documented int, everyone seems to use long */
5ff3f7a4 1137# endif
a0d0e21e
LW
1138 Zero(&fd_sets[0], 4, char*);
1139#endif
1140
ad517f75
MHM
1141# if SELECT_MIN_BITS == 1
1142 growsize = sizeof(fd_set);
1143# else
1144# if defined(__GLIBC__) && defined(__FD_SETSIZE)
1145# undef SELECT_MIN_BITS
1146# define SELECT_MIN_BITS __FD_SETSIZE
1147# endif
e366b469
PG
1148 /* If SELECT_MIN_BITS is greater than one we most probably will want
1149 * to align the sizes with SELECT_MIN_BITS/8 because for example
1150 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
f05550c0 1151 * UNIX, Solaris, Darwin) the smallest quantum select() operates
e366b469
PG
1152 * on (sets/tests/clears bits) is 32 bits. */
1153 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
e366b469
PG
1154# endif
1155
a0d0e21e 1156 sv = SP[4];
90eaaf02 1157 SvGETMAGIC(sv);
a0d0e21e 1158 if (SvOK(sv)) {
90eaaf02 1159 value = SvNV_nomg(sv);
a0d0e21e
LW
1160 if (value < 0.0)
1161 value = 0.0;
1162 timebuf.tv_sec = (long)value;
65202027 1163 value -= (NV)timebuf.tv_sec;
a0d0e21e
LW
1164 timebuf.tv_usec = (long)(value * 1000000.0);
1165 }
1166 else
4608196e 1167 tbuf = NULL;
a0d0e21e
LW
1168
1169 for (i = 1; i <= 3; i++) {
1170 sv = SP[i];
15547071 1171 if (!SvOK(sv) || SvCUR(sv) == 0) {
a0d0e21e
LW
1172 fd_sets[i] = 0;
1173 continue;
1174 }
4ef2275c 1175 assert(SvPOK(sv));
a0d0e21e
LW
1176 j = SvLEN(sv);
1177 if (j < growsize) {
1178 Sv_Grow(sv, growsize);
a0d0e21e 1179 }
c07a80fd
PP
1180 j = SvCUR(sv);
1181 s = SvPVX(sv) + j;
1182 while (++j <= growsize) {
1183 *s++ = '\0';
1184 }
1185
a0d0e21e
LW
1186#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1187 s = SvPVX(sv);
a02a5408 1188 Newx(fd_sets[i], growsize, char);
a0d0e21e
LW
1189 for (offset = 0; offset < growsize; offset += masksize) {
1190 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1191 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1192 }
1193#else
1194 fd_sets[i] = SvPVX(sv);
1195#endif
1196 }
1197
dc4c69d9
JH
1198#ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1199 /* Can't make just the (void*) conditional because that would be
1200 * cpp #if within cpp macro, and not all compilers like that. */
1201 nfound = PerlSock_select(
1202 maxlen * 8,
1203 (Select_fd_set_t) fd_sets[1],
1204 (Select_fd_set_t) fd_sets[2],
1205 (Select_fd_set_t) fd_sets[3],
1206 (void*) tbuf); /* Workaround for compiler bug. */
1207#else
6ad3d225 1208 nfound = PerlSock_select(
a0d0e21e
LW
1209 maxlen * 8,
1210 (Select_fd_set_t) fd_sets[1],
1211 (Select_fd_set_t) fd_sets[2],
1212 (Select_fd_set_t) fd_sets[3],
1213 tbuf);
dc4c69d9 1214#endif
a0d0e21e
LW
1215 for (i = 1; i <= 3; i++) {
1216 if (fd_sets[i]) {
1217 sv = SP[i];
1218#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1219 s = SvPVX(sv);
1220 for (offset = 0; offset < growsize; offset += masksize) {
1221 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1222 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1223 }
1224 Safefree(fd_sets[i]);
1225#endif
1226 SvSETMAGIC(sv);
1227 }
1228 }
1229
4189264e 1230 PUSHi(nfound);
a0d0e21e 1231 if (GIMME == G_ARRAY && tbuf) {
65202027
DS
1232 value = (NV)(timebuf.tv_sec) +
1233 (NV)(timebuf.tv_usec) / 1000000.0;
6e449a3a 1234 mPUSHn(value);
a0d0e21e
LW
1235 }
1236 RETURN;
1237#else
cea2e8a9 1238 DIE(aTHX_ "select not implemented");
a0d0e21e
LW
1239#endif
1240}
1241
8226a3d7 1242/*
dcccc8ff
KW
1243
1244=head1 GV Functions
1245
8226a3d7
NC
1246=for apidoc setdefout
1247
1248Sets PL_defoutgv, the default file handle for output, to the passed in
72d33970 1249typeglob. As PL_defoutgv "owns" a reference on its typeglob, the reference
8226a3d7
NC
1250count of the passed in typeglob is increased by one, and the reference count
1251of the typeglob that PL_defoutgv points to is decreased by one.
1252
1253=cut
1254*/
1255
4633a7c4 1256void
864dbfa3 1257Perl_setdefout(pTHX_ GV *gv)
4633a7c4 1258{
9a9bb270
FC
1259 PERL_ARGS_ASSERT_SETDEFOUT;
1260 SvREFCNT_inc_simple_void_NN(gv);
ef8d46e8 1261 SvREFCNT_dec(PL_defoutgv);
3280af22 1262 PL_defoutgv = gv;
4633a7c4
LW
1263}
1264
a0d0e21e
LW
1265PP(pp_select)
1266{
20b7effb 1267 dSP; dTARGET;
4633a7c4 1268 HV *hv;
159b6efe 1269 GV * const newdefout = (PL_op->op_private > 0) ? (MUTABLE_GV(POPs)) : NULL;
099be4f1 1270 GV * egv = GvEGVx(PL_defoutgv);
0df2568b 1271 GV * const *gvp;
4633a7c4 1272
4633a7c4 1273 if (!egv)
3280af22 1274 egv = PL_defoutgv;
099be4f1 1275 hv = isGV_with_GP(egv) ? GvSTASH(egv) : NULL;
0df2568b 1276 gvp = hv && HvENAME(hv)
204263bc
FC
1277 ? (GV**)hv_fetch(hv, GvNAME(egv), HEK_UTF8(GvNAME_HEK(egv)) ? -GvNAMELEN(egv) : GvNAMELEN(egv), FALSE)
1278 : NULL;
0df2568b 1279 if (gvp && *gvp == egv) {
bd61b366 1280 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
f86702cc 1281 XPUSHTARG;
0df2568b
FC
1282 }
1283 else {
ad64d0ec 1284 mXPUSHs(newRV(MUTABLE_SV(egv)));
4633a7c4
LW
1285 }
1286
1287 if (newdefout) {
ded8aa31
GS
1288 if (!GvIO(newdefout))
1289 gv_IOadd(newdefout);
4633a7c4
LW
1290 setdefout(newdefout);
1291 }
1292
a0d0e21e
LW
1293 RETURN;
1294}
1295
1296PP(pp_getc)
1297{
20b7effb 1298 dSP; dTARGET;
30901a8a
FC
1299 GV * const gv =
1300 MAXARG==0 || (!TOPs && !POPs) ? PL_stdingv : MUTABLE_GV(POPs);
9c9f25b8 1301 IO *const io = GvIO(gv);
2ae324a7 1302
ac3697cd
NC
1303 if (MAXARG == 0)
1304 EXTEND(SP, 1);
1305
9c9f25b8 1306 if (io) {
a5e1d062 1307 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1308 if (mg) {
0240605e 1309 const U32 gimme = GIMME_V;
3e0cb5de 1310 Perl_tied_method(aTHX_ SV_CONST(GETC), SP, MUTABLE_SV(io), mg, gimme, 0);
0240605e
NC
1311 if (gimme == G_SCALAR) {
1312 SPAGAIN;
a79db61d 1313 SvSetMagicSV_nosteal(TARG, TOPs);
0240605e
NC
1314 }
1315 return NORMAL;
a79db61d 1316 }
2ae324a7 1317 }
90133b69 1318 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
51087808 1319 if (!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
831e4cc3 1320 report_evil_fh(gv);
b5fe5ca2 1321 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1322 RETPUSHUNDEF;
90133b69 1323 }
bbce6d69 1324 TAINT;
76f68e9b 1325 sv_setpvs(TARG, " ");
9bc64814 1326 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
7d59b7e4
NIS
1327 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1328 /* Find out how many bytes the char needs */
aa07b2f6 1329 Size_t len = UTF8SKIP(SvPVX_const(TARG));
7d59b7e4
NIS
1330 if (len > 1) {
1331 SvGROW(TARG,len+1);
1332 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1333 SvCUR_set(TARG,1+len);
1334 }
1335 SvUTF8_on(TARG);
1336 }
88c34251 1337 else SvUTF8_off(TARG);
a0d0e21e
LW
1338 PUSHTARG;
1339 RETURN;
1340}
1341
76e3520e 1342STATIC OP *
cea2e8a9 1343S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
a0d0e21e 1344{
eb578fdb 1345 PERL_CONTEXT *cx;
f54cb97a 1346 const I32 gimme = GIMME_V;
a0d0e21e 1347
7918f24d
NC
1348 PERL_ARGS_ASSERT_DOFORM;
1349
535e48ea 1350 if (CvCLONE(cv))
7b190374
NC
1351 cv = MUTABLE_CV(sv_2mortal(MUTABLE_SV(cv_clone(cv))));
1352
a0d0e21e
LW
1353 ENTER;
1354 SAVETMPS;
1355
146174a9 1356 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
10067d9a 1357 PUSHFORMAT(cx, retop);
f32c7e86
FC
1358 if (CvDEPTH(cv) >= 2) {
1359 PERL_STACK_OVERFLOW_CHECK();
1360 pad_push(CvPADLIST(cv), CvDEPTH(cv));
1361 }
fd617465 1362 SAVECOMPPAD();
f32c7e86 1363 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), CvDEPTH(cv));
a0d0e21e 1364
4633a7c4 1365 setdefout(gv); /* locally select filehandle so $% et al work */
a0d0e21e
LW
1366 return CvSTART(cv);
1367}
1368
1369PP(pp_enterwrite)
1370{
39644a26 1371 dSP;
eb578fdb
KW
1372 GV *gv;
1373 IO *io;
a0d0e21e 1374 GV *fgv;
07822e36
JH
1375 CV *cv = NULL;
1376 SV *tmpsv = NULL;
a0d0e21e 1377
2addaaf3 1378 if (MAXARG == 0) {
2addaaf3 1379 EXTEND(SP, 1);
49225470 1380 gv = PL_defoutgv;
2addaaf3 1381 }
a0d0e21e 1382 else {
159b6efe 1383 gv = MUTABLE_GV(POPs);
a0d0e21e 1384 if (!gv)
3280af22 1385 gv = PL_defoutgv;
a0d0e21e 1386 }
a0d0e21e
LW
1387 io = GvIO(gv);
1388 if (!io) {
1389 RETPUSHNO;
1390 }
1391 if (IoFMT_GV(io))
1392 fgv = IoFMT_GV(io);
1393 else
1394 fgv = gv;
1395
2d1ebc9b 1396 assert(fgv);
a79db61d 1397
a0d0e21e 1398 cv = GvFORM(fgv);
a0d0e21e 1399 if (!cv) {
10edeb5d 1400 tmpsv = sv_newmortal();
f4a7049d 1401 gv_efullname4(tmpsv, fgv, NULL, FALSE);
2d1ebc9b 1402 DIE(aTHX_ "Undefined format \"%"SVf"\" called", SVfARG(tmpsv));
a0d0e21e 1403 }
44a8e56a 1404 IoFLAGS(io) &= ~IOf_DIDTOP;
8e4ecf23 1405 RETURNOP(doform(cv,gv,PL_op->op_next));
a0d0e21e
LW
1406}
1407
1408PP(pp_leavewrite)
1409{
20b7effb 1410 dSP;
f9c764c5 1411 GV * const gv = cxstack[cxstack_ix].blk_format.gv;
eb578fdb 1412 IO * const io = GvIOp(gv);
8b8cacda 1413 PerlIO *ofp;
760ac839 1414 PerlIO *fp;
8772537c
AL
1415 SV **newsp;
1416 I32 gimme;
eb578fdb 1417 PERL_CONTEXT *cx;
8f89e5a9 1418 OP *retop;
a0d0e21e 1419
8b8cacda 1420 if (!io || !(ofp = IoOFP(io)))
1421 goto forget_top;
1422
760ac839 1423 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1424 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
8b8cacda 1425
3280af22
NIS
1426 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1427 PL_formtarget != PL_toptarget)
a0d0e21e 1428 {
4633a7c4
LW
1429 GV *fgv;
1430 CV *cv;
a0d0e21e
LW
1431 if (!IoTOP_GV(io)) {
1432 GV *topgv;
a0d0e21e
LW
1433
1434 if (!IoTOP_NAME(io)) {
1b6737cc 1435 SV *topname;
a0d0e21e
LW
1436 if (!IoFMT_NAME(io))
1437 IoFMT_NAME(io) = savepv(GvNAME(gv));
d0c0e7dd
FC
1438 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%"HEKf"_TOP",
1439 HEKfARG(GvNAME_HEK(gv))));
f776e3cd 1440 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
748a9306 1441 if ((topgv && GvFORM(topgv)) ||
fafc274c 1442 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
2e0de35c 1443 IoTOP_NAME(io) = savesvpv(topname);
a0d0e21e 1444 else
89529cee 1445 IoTOP_NAME(io) = savepvs("top");
a0d0e21e 1446 }
f776e3cd 1447 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
a0d0e21e 1448 if (!topgv || !GvFORM(topgv)) {
b929a54b 1449 IoLINES_LEFT(io) = IoPAGE_LEN(io);
a0d0e21e
LW
1450 goto forget_top;
1451 }
1452 IoTOP_GV(io) = topgv;
1453 }
748a9306
LW
1454 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1455 I32 lines = IoLINES_LEFT(io);
504618e9 1456 const char *s = SvPVX_const(PL_formtarget);
8e07c86e
AD
1457 if (lines <= 0) /* Yow, header didn't even fit!!! */
1458 goto forget_top;
748a9306
LW
1459 while (lines-- > 0) {
1460 s = strchr(s, '\n');
1461 if (!s)
1462 break;
1463 s++;
1464 }
1465 if (s) {
f54cb97a 1466 const STRLEN save = SvCUR(PL_formtarget);
aa07b2f6 1467 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
d75029d0
NIS
1468 do_print(PL_formtarget, ofp);
1469 SvCUR_set(PL_formtarget, save);
3280af22
NIS
1470 sv_chop(PL_formtarget, s);
1471 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW
1472 }
1473 }
a0d0e21e 1474 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
f6dfc736 1475 do_print(GvSV(gv_fetchpvs("\f", GV_ADD, SVt_PV)), ofp);
a0d0e21e
LW
1476 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1477 IoPAGE(io)++;
3280af22 1478 PL_formtarget = PL_toptarget;
748a9306 1479 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4 1480 fgv = IoTOP_GV(io);
636013b3 1481 assert(fgv); /* IoTOP_GV(io) should have been set above */
4633a7c4 1482 cv = GvFORM(fgv);
1df70142
AL
1483 if (!cv) {
1484 SV * const sv = sv_newmortal();
bd61b366 1485 gv_efullname4(sv, fgv, NULL, FALSE);
44b7e78a 1486 DIE(aTHX_ "Undefined top format \"%"SVf"\" called", SVfARG(sv));
4633a7c4 1487 }
43cd5cb7 1488 return doform(cv, gv, PL_op);
a0d0e21e
LW
1489 }
1490
1491 forget_top:
3280af22 1492 POPBLOCK(cx,PL_curpm);
8f89e5a9 1493 retop = cx->blk_sub.retop;
25375124 1494 POPFORMAT(cx);
43cd5cb7 1495 SP = newsp; /* ignore retval of formline */
a0d0e21e
LW
1496 LEAVE;
1497
c782dc1d
FC
1498 if (!io || !(fp = IoOFP(io))) {
1499 if (io && IoIFP(io))
7716c5c5 1500 report_wrongway_fh(gv, '<');
c521cf7c 1501 else
7716c5c5 1502 report_evil_fh(gv);
3280af22 1503 PUSHs(&PL_sv_no);
a0d0e21e
LW
1504 }
1505 else {
3280af22 1506 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
a2a5de95 1507 Perl_ck_warner(aTHX_ packWARN(WARN_IO), "page overflow");
a0d0e21e 1508 }
d75029d0 1509 if (!do_print(PL_formtarget, fp))
3280af22 1510 PUSHs(&PL_sv_no);
a0d0e21e 1511 else {
3280af22
NIS
1512 FmLINES(PL_formtarget) = 0;
1513 SvCUR_set(PL_formtarget, 0);
1514 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1515 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1516 (void)PerlIO_flush(fp);
3280af22 1517 PUSHs(&PL_sv_yes);
a0d0e21e
LW
1518 }
1519 }
3280af22 1520 PL_formtarget = PL_bodytarget;
29033a8a 1521 PERL_UNUSED_VAR(gimme);
8e4ecf23 1522 RETURNOP(retop);
a0d0e21e
LW
1523}
1524
1525PP(pp_prtf)
1526{
20b7effb 1527 dSP; dMARK; dORIGMARK;
760ac839 1528 PerlIO *fp;
a0d0e21e 1529
159b6efe
NC
1530 GV * const gv
1531 = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv;
9c9f25b8 1532 IO *const io = GvIO(gv);
46fc3d4c 1533
87385d72
FC
1534 /* Treat empty list as "" */
1535 if (MARK == SP) XPUSHs(&PL_sv_no);
1536
9c9f25b8 1537 if (io) {
a5e1d062 1538 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d
AL
1539 if (mg) {
1540 if (MARK == ORIGMARK) {
1541 MEXTEND(SP, 1);
1542 ++MARK;
1543 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1544 ++SP;
1545 }
3e0cb5de 1546 return Perl_tied_method(aTHX_ SV_CONST(PRINTF), mark - 1, MUTABLE_SV(io),
d682515d
NC
1547 mg,
1548 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1549 sp - mark);
a79db61d 1550 }
46fc3d4c
PP
1551 }
1552
9c9f25b8 1553 if (!io) {
51087808 1554 report_evil_fh(gv);
93189314 1555 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW
1556 goto just_say_no;
1557 }
1558 else if (!(fp = IoOFP(io))) {
7716c5c5
NC
1559 if (IoIFP(io))
1560 report_wrongway_fh(gv, '<');
1561 else if (ckWARN(WARN_CLOSED))
1562 report_evil_fh(gv);
93189314 1563 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
a0d0e21e
LW
1564 goto just_say_no;
1565 }
1566 else {
c7bd8b84 1567 SV *sv = sv_newmortal();
a0d0e21e
LW
1568 do_sprintf(sv, SP - MARK, MARK + 1);
1569 if (!do_print(sv, fp))
1570 goto just_say_no;
1571
1572 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1573 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW
1574 goto just_say_no;
1575 }
a0d0e21e 1576 SP = ORIGMARK;
3280af22 1577 PUSHs(&PL_sv_yes);
a0d0e21e
LW
1578 RETURN;
1579
1580 just_say_no:
a0d0e21e 1581 SP = ORIGMARK;
3280af22 1582 PUSHs(&PL_sv_undef);
a0d0e21e
LW
1583 RETURN;
1584}
1585
c07a80fd
PP
1586PP(pp_sysopen)
1587{
39644a26 1588 dSP;
de5e49e1 1589 const int perm = (MAXARG > 3 && (TOPs || POPs)) ? POPi : 0666;
1df70142 1590 const int mode = POPi;
1b6737cc 1591 SV * const sv = POPs;
159b6efe 1592 GV * const gv = MUTABLE_GV(POPs);
1b6737cc 1593 STRLEN len;
c07a80fd 1594
4592e6ca 1595 /* Need TIEHANDLE method ? */
1b6737cc 1596 const char * const tmps = SvPV_const(sv, len);
d5eb9a46 1597 if (do_open_raw(gv, tmps, len, mode, perm)) {
c07a80fd 1598 IoLINES(GvIOp(gv)) = 0;
3280af22 1599 PUSHs(&PL_sv_yes);
c07a80fd
PP
1600 }
1601 else {
3280af22 1602 PUSHs(&PL_sv_undef);
c07a80fd
PP
1603 }
1604 RETURN;
1605}
1606
a0d0e21e
LW
1607PP(pp_sysread)
1608{
20b7effb 1609 dSP; dMARK; dORIGMARK; dTARGET;
0b423688 1610 SSize_t offset;
a0d0e21e
LW
1611 IO *io;
1612 char *buffer;
0b423688 1613 STRLEN orig_size;
5b54f415 1614 SSize_t length;
eb5c063a 1615 SSize_t count;
748a9306 1616 SV *bufsv;
a0d0e21e 1617 STRLEN blen;
eb5c063a 1618 int fp_utf8;
1dd30107
NC
1619 int buffer_utf8;
1620 SV *read_target;
eb5c063a
NIS
1621 Size_t got = 0;
1622 Size_t wanted;
1d636c13 1623 bool charstart = FALSE;
87330c3c
JH
1624 STRLEN charskip = 0;
1625 STRLEN skip = 0;
159b6efe 1626 GV * const gv = MUTABLE_GV(*++MARK);
375ed12a
JH
1627 int fd;
1628
5b468f54 1629 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1b6737cc 1630 && gv && (io = GvIO(gv)) )
137443ea 1631 {
a5e1d062 1632 const MAGIC *const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1b6737cc 1633 if (mg) {
3e0cb5de 1634 return Perl_tied_method(aTHX_ SV_CONST(READ), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC
1635 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1636 sp - mark);
1b6737cc 1637 }
2ae324a7
PP
1638 }
1639
a0d0e21e
LW
1640 if (!gv)
1641 goto say_undef;
748a9306 1642 bufsv = *++MARK;
ff68c719 1643 if (! SvOK(bufsv))
76f68e9b 1644 sv_setpvs(bufsv, "");
a0d0e21e 1645 length = SvIVx(*++MARK);
4bac9ae4
CS
1646 if (length < 0)
1647 DIE(aTHX_ "Negative length");
748a9306 1648 SETERRNO(0,0);
a0d0e21e
LW
1649 if (MARK < SP)
1650 offset = SvIVx(*++MARK);
1651 else
1652 offset = 0;
1653 io = GvIO(gv);
b5fe5ca2 1654 if (!io || !IoIFP(io)) {
51087808 1655 report_evil_fh(gv);
b5fe5ca2 1656 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1657 goto say_undef;
b5fe5ca2 1658 }
375ed12a
JH
1659
1660 /* Note that fd can here validly be -1, don't check it yet. */
1661 fd = PerlIO_fileno(IoIFP(io));
1662
0064a8a9 1663 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
7d59b7e4 1664 buffer = SvPVutf8_force(bufsv, blen);
1e54db1a 1665 /* UTF-8 may not have been set if they are all low bytes */
eb5c063a 1666 SvUTF8_on(bufsv);
9b9d7ce8 1667 buffer_utf8 = 0;
7d59b7e4
NIS
1668 }
1669 else {
1670 buffer = SvPV_force(bufsv, blen);
1dd30107 1671 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
7d59b7e4 1672 }
4bac9ae4 1673 if (DO_UTF8(bufsv)) {
3f914778 1674 blen = sv_len_utf8_nomg(bufsv);
4bac9ae4 1675 }
7d59b7e4 1676
d0965105
JH
1677 charstart = TRUE;
1678 charskip = 0;
87330c3c 1679 skip = 0;
4bac9ae4 1680 wanted = length;
d0965105 1681
a0d0e21e 1682#ifdef HAS_SOCKET
533c011a 1683 if (PL_op->op_type == OP_RECV) {
0b423688 1684 Sock_size_t bufsize;
46fc3d4c 1685 char namebuf[MAXPATHLEN];
375ed12a
JH
1686 if (fd < 0) {
1687 SETERRNO(EBADF,SS_IVCHAN);
1688 RETPUSHUNDEF;
1689 }
b5afd346 1690#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
490ab354
JH
1691 bufsize = sizeof (struct sockaddr_in);
1692#else
46fc3d4c 1693 bufsize = sizeof namebuf;
490ab354 1694#endif
abf95952
IZ
1695#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1696 if (bufsize >= 256)
1697 bufsize = 255;
1698#endif
eb160463 1699 buffer = SvGROW(bufsv, (STRLEN)(length+1));
bbce6d69 1700 /* 'offset' means 'flags' here */
375ed12a 1701 count = PerlSock_recvfrom(fd, buffer, length, offset,
10edeb5d 1702 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1703 if (count < 0)
a0d0e21e 1704 RETPUSHUNDEF;
8eb023a9
DM
1705 /* MSG_TRUNC can give oversized count; quietly lose it */
1706 if (count > length)
1707 count = length;
eb5c063a 1708 SvCUR_set(bufsv, count);
748a9306
LW
1709 *SvEND(bufsv) = '\0';
1710 (void)SvPOK_only(bufsv);
eb5c063a
NIS
1711 if (fp_utf8)
1712 SvUTF8_on(bufsv);
748a9306 1713 SvSETMAGIC(bufsv);
aac0dd9a 1714 /* This should not be marked tainted if the fp is marked clean */
bbce6d69
PP
1715 if (!(IoFLAGS(io) & IOf_UNTAINT))
1716 SvTAINTED_on(bufsv);
a0d0e21e 1717 SP = ORIGMARK;
e122534c
TC
1718#if defined(__CYGWIN__)
1719 /* recvfrom() on cygwin doesn't set bufsize at all for
1720 connected sockets, leaving us with trash in the returned
1721 name, so use the same test as the Win32 code to check if it
1722 wasn't set, and set it [perl #118843] */
1723 if (bufsize == sizeof namebuf)
1724 bufsize = 0;
1725#endif
46fc3d4c 1726 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW
1727 PUSHs(TARG);
1728 RETURN;
1729 }
a0d0e21e 1730#endif
bbce6d69 1731 if (offset < 0) {
0b423688 1732 if (-offset > (SSize_t)blen)
cea2e8a9 1733 DIE(aTHX_ "Offset outside string");
bbce6d69
PP
1734 offset += blen;
1735 }
eb5c063a
NIS
1736 if (DO_UTF8(bufsv)) {
1737 /* convert offset-as-chars to offset-as-bytes */
d5f981bb 1738 if (offset >= (SSize_t)blen)
6960c29a
CH
1739 offset += SvCUR(bufsv) - blen;
1740 else
1741 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
eb5c063a 1742 }
375ed12a 1743
eb5c063a 1744 more_bytes:
375ed12a
JH
1745 /* Reestablish the fd in case it shifted from underneath us. */
1746 fd = PerlIO_fileno(IoIFP(io));
1747
0b423688 1748 orig_size = SvCUR(bufsv);
1dd30107
NC
1749 /* Allocating length + offset + 1 isn't perfect in the case of reading
1750 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1751 unduly.
1752 (should be 2 * length + offset + 1, or possibly something longer if
1753 PL_encoding is true) */
eb160463 1754 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
0b423688
TC
1755 if (offset > 0 && offset > (SSize_t)orig_size) { /* Zero any newly allocated space */
1756 Zero(buffer+orig_size, offset-orig_size, char);
cd52b7b2 1757 }
eb5c063a 1758 buffer = buffer + offset;
1dd30107
NC
1759 if (!buffer_utf8) {
1760 read_target = bufsv;
1761 } else {
1762 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1763 concatenate it to the current buffer. */
1764
1765 /* Truncate the existing buffer to the start of where we will be
1766 reading to: */
1767 SvCUR_set(bufsv, offset);
1768
1769 read_target = sv_newmortal();
862a34c6 1770 SvUPGRADE(read_target, SVt_PV);
fe2774ed 1771 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1dd30107 1772 }
eb5c063a 1773
533c011a 1774 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1775#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1776 if (IoTYPE(io) == IoTYPE_SOCKET) {
375ed12a
JH
1777 if (fd < 0) {
1778 SETERRNO(EBADF,SS_IVCHAN);
1779 count = -1;
1780 }
1781 else
1782 count = PerlSock_recv(fd, buffer, length, 0);
a7092146
GS
1783 }
1784 else
1785#endif
1786 {
375ed12a
JH
1787 if (fd < 0) {
1788 SETERRNO(EBADF,RMS_IFI);
1789 count = -1;
1790 }
1791 else
1792 count = PerlLIO_read(fd, buffer, length);
a7092146 1793 }
a0d0e21e
LW
1794 }
1795 else
3b02c43c 1796 {
eb5c063a
NIS
1797 count = PerlIO_read(IoIFP(io), buffer, length);
1798 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1799 if (count == 0 && PerlIO_error(IoIFP(io)))
1800 count = -1;
3b02c43c 1801 }
eb5c063a 1802 if (count < 0) {
7716c5c5 1803 if (IoTYPE(io) == IoTYPE_WRONLY)
a5390457 1804 report_wrongway_fh(gv, '>');
a0d0e21e 1805 goto say_undef;
af8c498a 1806 }
aa07b2f6 1807 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1dd30107
NC
1808 *SvEND(read_target) = '\0';
1809 (void)SvPOK_only(read_target);
0064a8a9 1810 if (fp_utf8 && !IN_BYTES) {
eb5c063a 1811 /* Look at utf8 we got back and count the characters */
1df70142 1812 const char *bend = buffer + count;
eb5c063a 1813 while (buffer < bend) {
d0965105
JH
1814 if (charstart) {
1815 skip = UTF8SKIP(buffer);
1816 charskip = 0;
1817 }
1818 if (buffer - charskip + skip > bend) {
eb5c063a
NIS
1819 /* partial character - try for rest of it */
1820 length = skip - (bend-buffer);
aa07b2f6 1821 offset = bend - SvPVX_const(bufsv);
d0965105
JH
1822 charstart = FALSE;
1823 charskip += count;
eb5c063a
NIS
1824 goto more_bytes;
1825 }
1826 else {
1827 got++;
1828 buffer += skip;
d0965105
JH
1829 charstart = TRUE;
1830 charskip = 0;
eb5c063a
NIS
1831 }
1832 }
1833 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1834 provided amount read (count) was what was requested (length)
1835 */
1836 if (got < wanted && count == length) {
d0965105 1837 length = wanted - got;
aa07b2f6 1838 offset = bend - SvPVX_const(bufsv);
eb5c063a
NIS
1839 goto more_bytes;
1840 }
1841 /* return value is character count */
1842 count = got;
1843 SvUTF8_on(bufsv);
1844 }
1dd30107
NC
1845 else if (buffer_utf8) {
1846 /* Let svcatsv upgrade the bytes we read in to utf8.
1847 The buffer is a mortal so will be freed soon. */
1848 sv_catsv_nomg(bufsv, read_target);
1849 }
748a9306 1850 SvSETMAGIC(bufsv);
aac0dd9a 1851 /* This should not be marked tainted if the fp is marked clean */
bbce6d69
PP
1852 if (!(IoFLAGS(io) & IOf_UNTAINT))
1853 SvTAINTED_on(bufsv);
a0d0e21e 1854 SP = ORIGMARK;
eb5c063a 1855 PUSHi(count);
a0d0e21e
LW
1856 RETURN;
1857
1858 say_undef:
1859 SP = ORIGMARK;
1860 RETPUSHUNDEF;
1861}
1862
60504e18 1863PP(pp_syswrite)
a0d0e21e 1864{
20b7effb 1865 dSP; dMARK; dORIGMARK; dTARGET;
748a9306 1866 SV *bufsv;
83003860 1867 const char *buffer;
8c99d73e 1868 SSize_t retval;
a0d0e21e 1869 STRLEN blen;
c9cb0f41 1870 STRLEN orig_blen_bytes;
64a1bc8e 1871 const int op_type = PL_op->op_type;
c9cb0f41
NC
1872 bool doing_utf8;
1873 U8 *tmpbuf = NULL;
159b6efe 1874 GV *const gv = MUTABLE_GV(*++MARK);
91472ad4 1875 IO *const io = GvIO(gv);
375ed12a 1876 int fd;
91472ad4
NC
1877
1878 if (op_type == OP_SYSWRITE && io) {
a5e1d062 1879 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1880 if (mg) {
a79db61d 1881 if (MARK == SP - 1) {
c8834ab7
TC
1882 SV *sv = *SP;
1883 mXPUSHi(sv_len(sv));
a79db61d
AL
1884 PUTBACK;
1885 }
1886
3e0cb5de 1887 return Perl_tied_method(aTHX_ SV_CONST(WRITE), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC
1888 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1889 sp - mark);
64a1bc8e 1890 }
1d603a67 1891 }
a0d0e21e
LW
1892 if (!gv)
1893 goto say_undef;
64a1bc8e 1894
748a9306 1895 bufsv = *++MARK;
64a1bc8e 1896
748a9306 1897 SETERRNO(0,0);
cf167416 1898 if (!io || !IoIFP(io) || IoTYPE(io) == IoTYPE_RDONLY) {
8c99d73e 1899 retval = -1;
51087808
NC
1900 if (io && IoIFP(io))
1901 report_wrongway_fh(gv, '<');
1902 else
1903 report_evil_fh(gv);
b5fe5ca2 1904 SETERRNO(EBADF,RMS_IFI);
7d59b7e4
NIS
1905 goto say_undef;
1906 }
375ed12a
JH
1907 fd = PerlIO_fileno(IoIFP(io));
1908 if (fd < 0) {
1909 SETERRNO(EBADF,SS_IVCHAN);
1910 retval = -1;
1911 goto say_undef;
1912 }
7d59b7e4 1913
c9cb0f41
NC
1914 /* Do this first to trigger any overloading. */
1915 buffer = SvPV_const(bufsv, blen);
1916 orig_blen_bytes = blen;
1917 doing_utf8 = DO_UTF8(bufsv);
1918
7d59b7e4 1919 if (PerlIO_isutf8(IoIFP(io))) {
6aa2f6a7 1920 if (!SvUTF8(bufsv)) {
c9cb0f41
NC
1921 /* We don't modify the original scalar. */
1922 tmpbuf = bytes_to_utf8((const U8*) buffer, &blen);
1923 buffer = (char *) tmpbuf;
1924 doing_utf8 = TRUE;
1925 }
a0d0e21e 1926 }
c9cb0f41
NC
1927 else if (doing_utf8) {
1928 STRLEN tmplen = blen;
a79db61d 1929 U8 * const result = bytes_from_utf8((const U8*) buffer, &tmplen, &doing_utf8);
c9cb0f41
NC
1930 if (!doing_utf8) {
1931 tmpbuf = result;
1932 buffer = (char *) tmpbuf;
1933 blen = tmplen;
1934 }
1935 else {
1936 assert((char *)result == buffer);
1937 Perl_croak(aTHX_ "Wide character in %s", OP_DESC(PL_op));
1938 }
7d59b7e4
NIS
1939 }
1940
e2712234 1941#ifdef HAS_SOCKET
7627e6d0 1942 if (op_type == OP_SEND) {
e2712234
NC
1943 const int flags = SvIVx(*++MARK);
1944 if (SP > MARK) {
1945 STRLEN mlen;
1946 char * const sockbuf = SvPVx(*++MARK, mlen);
375ed12a 1947 retval = PerlSock_sendto(fd, buffer, blen,
e2712234
NC
1948 flags, (struct sockaddr *)sockbuf, mlen);
1949 }
1950 else {
375ed12a 1951 retval = PerlSock_send(fd, buffer, blen, flags);
e2712234 1952 }
7627e6d0
NC
1953 }
1954 else
e2712234 1955#endif
7627e6d0 1956 {
c9cb0f41
NC
1957 Size_t length = 0; /* This length is in characters. */
1958 STRLEN blen_chars;
7d59b7e4 1959 IV offset;
c9cb0f41
NC
1960
1961 if (doing_utf8) {
1962 if (tmpbuf) {
1963 /* The SV is bytes, and we've had to upgrade it. */
1964 blen_chars = orig_blen_bytes;
1965 } else {
1966 /* The SV really is UTF-8. */
3f914778
FC
1967 /* Don't call sv_len_utf8 on a magical or overloaded
1968 scalar, as we might get back a different result. */
1969 blen_chars = sv_or_pv_len_utf8(bufsv, buffer, blen);
c9cb0f41
NC
1970 }
1971 } else {
1972 blen_chars = blen;
1973 }
1974
1975 if (MARK >= SP) {
1976 length = blen_chars;
1977 } else {
1978#if Size_t_size > IVSIZE
1979 length = (Size_t)SvNVx(*++MARK);
1980#else
1981 length = (Size_t)SvIVx(*++MARK);
1982#endif
4b0c4b6f
NC
1983 if ((SSize_t)length < 0) {
1984 Safefree(tmpbuf);
c9cb0f41 1985 DIE(aTHX_ "Negative length");
4b0c4b6f 1986 }
7d59b7e4 1987 }
c9cb0f41 1988
bbce6d69 1989 if (MARK < SP) {
a0d0e21e 1990 offset = SvIVx(*++MARK);
bbce6d69 1991 if (offset < 0) {
4b0c4b6f
NC
1992 if (-offset > (IV)blen_chars) {
1993 Safefree(tmpbuf);
cea2e8a9 1994 DIE(aTHX_ "Offset outside string");
4b0c4b6f 1995 }
c9cb0f41 1996 offset += blen_chars;
3c946528 1997 } else if (offset > (IV)blen_chars) {
4b0c4b6f 1998 Safefree(tmpbuf);
cea2e8a9 1999 DIE(aTHX_ "Offset outside string");
4b0c4b6f 2000 }
bbce6d69 2001 } else
a0d0e21e 2002 offset = 0;
c9cb0f41
NC
2003 if (length > blen_chars - offset)
2004 length = blen_chars - offset;
2005 if (doing_utf8) {
2006 /* Here we convert length from characters to bytes. */
2007 if (tmpbuf || SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
2008 /* Either we had to convert the SV, or the SV is magical, or
2009 the SV has overloading, in which case we can't or mustn't
2010 or mustn't call it again. */
2011
2012 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
2013 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
2014 } else {
2015 /* It's a real UTF-8 SV, and it's not going to change under
2016 us. Take advantage of any cache. */
2017 I32 start = offset;
2018 I32 len_I32 = length;
2019
2020 /* Convert the start and end character positions to bytes.
2021 Remember that the second argument to sv_pos_u2b is relative
2022 to the first. */
2023 sv_pos_u2b(bufsv, &start, &len_I32);
2024
2025 buffer += start;
2026 length = len_I32;
2027 }
7d59b7e4
NIS
2028 }
2029 else {
2030 buffer = buffer+offset;
2031 }
a7092146 2032#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 2033 if (IoTYPE(io) == IoTYPE_SOCKET) {
375ed12a 2034 retval = PerlSock_send(fd, buffer, length, 0);
a7092146
GS
2035 }
2036 else
2037#endif
2038 {
94e4c244 2039 /* See the note at doio.c:do_print about filesize limits. --jhi */
375ed12a 2040 retval = PerlLIO_write(fd, buffer, length);
a7092146 2041 }
a0d0e21e 2042 }
c9cb0f41 2043
8c99d73e 2044 if (retval < 0)
a0d0e21e
LW
2045 goto say_undef;
2046 SP = ORIGMARK;
c9cb0f41 2047 if (doing_utf8)
f36eea10 2048 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
4b0c4b6f 2049
a79db61d 2050 Safefree(tmpbuf);
8c99d73e
GS
2051#if Size_t_size > IVSIZE
2052 PUSHn(retval);
2053#else
2054 PUSHi(retval);
2055#endif
a0d0e21e
LW
2056 RETURN;
2057
2058 say_undef:
a79db61d 2059 Safefree(tmpbuf);
a0d0e21e
LW
2060 SP = ORIGMARK;
2061 RETPUSHUNDEF;
2062}
2063
a0d0e21e
LW
2064PP(pp_eof)
2065{
20b7effb 2066 dSP;
a0d0e21e 2067 GV *gv;
32e65323 2068 IO *io;
a5e1d062 2069 const MAGIC *mg;
bc0c81ca
NC
2070 /*
2071 * in Perl 5.12 and later, the additional parameter is a bitmask:
2072 * 0 = eof
2073 * 1 = eof(FH)
2074 * 2 = eof() <- ARGV magic
2075 *
2076 * I'll rely on the compiler's trace flow analysis to decide whether to
2077 * actually assign this out here, or punt it into the only block where it is
2078 * used. Doing it out here is DRY on the condition logic.
2079 */
2080 unsigned int which;
a0d0e21e 2081
bc0c81ca 2082 if (MAXARG) {
32e65323 2083 gv = PL_last_in_gv = MUTABLE_GV(POPs); /* eof(FH) */
bc0c81ca
NC
2084 which = 1;
2085 }
b5f55170
NC
2086 else {
2087 EXTEND(SP, 1);
2088
bc0c81ca 2089 if (PL_op->op_flags & OPf_SPECIAL) {
b5f55170 2090 gv = PL_last_in_gv = GvEGVx(PL_argvgv); /* eof() - ARGV magic */
bc0c81ca
NC
2091 which = 2;
2092 }
2093 else {
b5f55170 2094 gv = PL_last_in_gv; /* eof */
bc0c81ca
NC
2095 which = 0;
2096 }
b5f55170 2097 }
32e65323
CS
2098
2099 if (!gv)
2100 RETPUSHNO;
2101
2102 if ((io = GvIO(gv)) && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) {
3e0cb5de 2103 return tied_method1(SV_CONST(EOF), SP, MUTABLE_SV(io), mg, newSVuv(which));
146174a9 2104 }
4592e6ca 2105
32e65323
CS
2106 if (!MAXARG && (PL_op->op_flags & OPf_SPECIAL)) { /* eof() */
2107 if (io && !IoIFP(io)) {
b9f2b683 2108 if ((IoFLAGS(io) & IOf_START) && av_tindex(GvAVn(gv)) < 0) {
32e65323
CS
2109 IoLINES(io) = 0;
2110 IoFLAGS(io) &= ~IOf_START;
d5eb9a46 2111 do_open6(gv, "-", 1, NULL, NULL, 0);
32e65323
CS
2112 if (GvSV(gv))
2113 sv_setpvs(GvSV(gv), "-");
2114 else
2115 GvSV(gv) = newSVpvs("-");
2116 SvSETMAGIC(GvSV(gv));
2117 }
2118 else if (!nextargv(gv))
2119 RETPUSHYES;
6136c704 2120 }
4592e6ca
NIS
2121 }
2122
32e65323 2123 PUSHs(boolSV(do_eof(gv)));
a0d0e21e
LW
2124 RETURN;
2125}
2126
2127PP(pp_tell)
2128{
20b7effb 2129 dSP; dTARGET;
301e8125 2130 GV *gv;
5b468f54 2131 IO *io;
a0d0e21e 2132
b64a1294 2133 if (MAXARG != 0 && (TOPs || POPs))
159b6efe 2134 PL_last_in_gv = MUTABLE_GV(POPs);
ac3697cd
NC
2135 else
2136 EXTEND(SP, 1);
c4420975 2137 gv = PL_last_in_gv;
4592e6ca 2138
9c9f25b8
NC
2139 io = GvIO(gv);
2140 if (io) {
a5e1d062 2141 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2142 if (mg) {
3e0cb5de 2143 return tied_method0(SV_CONST(TELL), SP, MUTABLE_SV(io), mg);
a79db61d 2144 }
4592e6ca 2145 }
f4817f32 2146 else if (!gv) {
f03173f2
RGS
2147 if (!errno)
2148 SETERRNO(EBADF,RMS_IFI);
2149 PUSHi(-1);
2150 RETURN;
2151 }
4592e6ca 2152
146174a9
CB
2153#if LSEEKSIZE > IVSIZE
2154 PUSHn( do_tell(gv) );
2155#else
a0d0e21e 2156 PUSHi( do_tell(gv) );
146174a9 2157#endif
a0d0e21e
LW
2158 RETURN;
2159}
2160
137443ea
PP
2161PP(pp_sysseek)
2162{
20b7effb 2163 dSP;
1df70142 2164 const int whence = POPi;
146174a9 2165#if LSEEKSIZE > IVSIZE
7452cf6a 2166 const Off_t offset = (Off_t)SvNVx(POPs);
146174a9 2167#else
7452cf6a 2168 const Off_t offset = (Off_t)SvIVx(POPs);
146174a9 2169#endif
a0d0e21e 2170
159b6efe 2171 GV * const gv = PL_last_in_gv = MUTABLE_GV(POPs);
9c9f25b8 2172 IO *const io = GvIO(gv);
4592e6ca 2173
9c9f25b8 2174 if (io) {
a5e1d062 2175 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2176 if (mg) {
cb50131a 2177#if LSEEKSIZE > IVSIZE
74f0b550 2178 SV *const offset_sv = newSVnv((NV) offset);
cb50131a 2179#else
74f0b550 2180 SV *const offset_sv = newSViv(offset);
cb50131a 2181#endif
bc0c81ca 2182
3e0cb5de 2183 return tied_method2(SV_CONST(SEEK), SP, MUTABLE_SV(io), mg, offset_sv,
d682515d 2184 newSViv(whence));
a79db61d 2185 }
4592e6ca
NIS
2186 }
2187
533c011a 2188 if (PL_op->op_type == OP_SEEK)
8903cb82
PP
2189 PUSHs(boolSV(do_seek(gv, offset, whence)));
2190 else {
0bcc34c2 2191 const Off_t sought = do_sysseek(gv, offset, whence);
b448e4fe 2192 if (sought < 0)
146174a9
CB
2193 PUSHs(&PL_sv_undef);
2194 else {
7452cf6a 2195 SV* const sv = sought ?
146174a9 2196#if LSEEKSIZE > IVSIZE
b448e4fe 2197 newSVnv((NV)sought)
146174a9 2198#else
b448e4fe 2199 newSViv(sought)
146174a9
CB
2200#endif
2201 : newSVpvn(zero_but_true, ZBTLEN);
6e449a3a 2202 mPUSHs(sv);
146174a9 2203 }
8903cb82 2204 }
a0d0e21e
LW
2205 RETURN;
2206}
2207
2208PP(pp_truncate)
2209{
39644a26 2210 dSP;
8c99d73e
GS
2211 /* There seems to be no consensus on the length type of truncate()
2212 * and ftruncate(), both off_t and size_t have supporters. In
2213 * general one would think that when using large files, off_t is
2214 * at least as wide as size_t, so using an off_t should be okay. */
2215 /* XXX Configure probe for the length type of *truncate() needed XXX */
0bcc34c2 2216 Off_t len;
a0d0e21e 2217
25342a55 2218#if Off_t_size > IVSIZE
0bcc34c2 2219 len = (Off_t)POPn;
8c99d73e 2220#else
0bcc34c2 2221 len = (Off_t)POPi;
8c99d73e
GS
2222#endif
2223 /* Checking for length < 0 is problematic as the type might or
301e8125 2224 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 2225 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2226 SETERRNO(0,0);
d05c1ba0 2227 {
5e0adc2d 2228 SV * const sv = POPs;
d05c1ba0
JH
2229 int result = 1;
2230 GV *tmpgv;
090bf15b
SR
2231 IO *io;
2232
42409c40
FC
2233 if (PL_op->op_flags & OPf_SPECIAL
2234 ? (tmpgv = gv_fetchsv(sv, 0, SVt_PVIO), 1)
2235 : !!(tmpgv = MAYBE_DEREF_GV(sv)) ) {
9c9f25b8
NC
2236 io = GvIO(tmpgv);
2237 if (!io)
090bf15b 2238 result = 0;
d05c1ba0 2239 else {
090bf15b 2240 PerlIO *fp;
090bf15b
SR
2241 do_ftruncate_io:
2242 TAINT_PROPER("truncate");
2243 if (!(fp = IoIFP(io))) {
2244 result = 0;
2245 }
2246 else {
375ed12a
JH
2247 int fd = PerlIO_fileno(fp);
2248 if (fd < 0) {
2249 SETERRNO(EBADF,RMS_IFI);
2250 result = 0;
2251 } else {
2252 PerlIO_flush(fp);
cbdc8872 2253#ifdef HAS_TRUNCATE
375ed12a 2254 if (ftruncate(fd, len) < 0)
301e8125 2255#else
375ed12a 2256 if (my_chsize(fd, len) < 0)
cbdc8872 2257#endif
375ed12a
JH
2258 result = 0;
2259 }
090bf15b 2260 }
d05c1ba0 2261 }
cbdc8872 2262 }
5e0adc2d 2263 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2264 io = MUTABLE_IO(SvRV(sv)); /* *main::FRED{IO} for example */
090bf15b 2265 goto do_ftruncate_io;
5e0adc2d
FC
2266 }
2267 else {
2268 const char * const name = SvPV_nomg_const_nolen(sv);
d05c1ba0 2269 TAINT_PROPER("truncate");
cbdc8872 2270#ifdef HAS_TRUNCATE
d05c1ba0
JH
2271 if (truncate(name, len) < 0)
2272 result = 0;
cbdc8872 2273#else
d05c1ba0 2274 {
7452cf6a 2275 const int tmpfd = PerlLIO_open(name, O_RDWR);
d05c1ba0 2276
375ed12a
JH
2277 if (tmpfd < 0) {
2278 SETERRNO(EBADF,RMS_IFI);
cbdc8872 2279 result = 0;
375ed12a 2280 } else {
d05c1ba0
JH
2281 if (my_chsize(tmpfd, len) < 0)
2282 result = 0;
2283 PerlLIO_close(tmpfd);
2284 }
cbdc8872 2285 }
a0d0e21e 2286#endif
d05c1ba0 2287 }
a0d0e21e 2288
d05c1ba0
JH
2289 if (result)
2290 RETPUSHYES;
2291 if (!errno)
93189314 2292 SETERRNO(EBADF,RMS_IFI);
d05c1ba0
JH
2293 RETPUSHUNDEF;
2294 }
a0d0e21e
LW
2295}
2296
a0d0e21e
LW
2297PP(pp_ioctl)
2298{
20b7effb 2299 dSP; dTARGET;
7452cf6a 2300 SV * const argsv = POPs;
1df70142 2301 const unsigned int func = POPu;
49225470 2302 int optype;
159b6efe 2303 GV * const gv = MUTABLE_GV(POPs);
8a6c0fcb 2304 IO * const io = GvIOn(gv);
a0d0e21e 2305 char *s;
324aa91a 2306 IV retval;
a0d0e21e 2307
8a6c0fcb 2308 if (!IoIFP(io)) {
51087808 2309 report_evil_fh(gv);
93189314 2310 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
a0d0e21e
LW
2311 RETPUSHUNDEF;
2312 }
2313
748a9306 2314 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2315 STRLEN len;
324aa91a 2316 STRLEN need;
748a9306 2317 s = SvPV_force(argsv, len);
324aa91a
HF
2318 need = IOCPARM_LEN(func);
2319 if (len < need) {
2320 s = Sv_Grow(argsv, need + 1);
2321 SvCUR_set(argsv, need);
a0d0e21e
LW
2322 }
2323
748a9306 2324 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW
2325 }
2326 else {
748a9306 2327 retval = SvIV(argsv);
c529f79d 2328 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW
2329 }
2330
49225470 2331 optype = PL_op->op_type;
ed4b2e6b 2332 TAINT_PROPER(PL_op_desc[optype]);
a0d0e21e
LW
2333
2334 if (optype == OP_IOCTL)
2335#ifdef HAS_IOCTL
76e3520e 2336 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2337#else
cea2e8a9 2338 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW
2339#endif
2340 else
c214f4ad
B
2341#ifndef HAS_FCNTL
2342 DIE(aTHX_ "fcntl is not implemented");
2343#else
55497cff 2344#if defined(OS2) && defined(__EMX__)
760ac839 2345 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2346#else
760ac839 2347 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2348#endif
6652bd42 2349#endif
a0d0e21e 2350
6652bd42 2351#if defined(HAS_IOCTL) || defined(HAS_FCNTL)
748a9306
LW
2352 if (SvPOK(argsv)) {
2353 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2354 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
53e06cf0 2355 OP_NAME(PL_op));
748a9306
LW
2356 s[SvCUR(argsv)] = 0; /* put our null back */
2357 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW
2358 }
2359
2360 if (retval == -1)
2361 RETPUSHUNDEF;
2362 if (retval != 0) {
2363 PUSHi(retval);
2364 }
2365 else {
8903cb82 2366 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e 2367 }
4808266b 2368#endif
c214f4ad 2369 RETURN;
a0d0e21e
LW
2370}
2371
2372PP(pp_flock)
2373{
9cad6237 2374#ifdef FLOCK
20b7effb 2375 dSP; dTARGET;
a0d0e21e 2376 I32 value;
7452cf6a 2377 const int argtype = POPi;
1f28cbca 2378 GV * const gv = MUTABLE_GV(POPs);
9c9f25b8
NC
2379 IO *const io = GvIO(gv);
2380 PerlIO *const fp = io ? IoIFP(io) : NULL;
16d20bd9 2381
0bcc34c2 2382 /* XXX Looks to me like io is always NULL at this point */
a0d0e21e 2383 if (fp) {
68dc0745 2384 (void)PerlIO_flush(fp);
76e3520e 2385 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2386 }
cb50131a 2387 else {
51087808 2388 report_evil_fh(gv);
a0d0e21e 2389 value = 0;
93189314 2390 SETERRNO(EBADF,RMS_IFI);
cb50131a 2391 }
a0d0e21e
LW
2392 PUSHi(value);
2393 RETURN;
2394#else
56a94ef2 2395 DIE(aTHX_ PL_no_func, "flock");
a0d0e21e
LW
2396#endif
2397}
2398
2399/* Sockets. */
2400
7627e6d0
NC
2401#ifdef HAS_SOCKET
2402
a0d0e21e
LW
2403PP(pp_socket)
2404{
20b7effb 2405 dSP;
7452cf6a
AL
2406 const int protocol = POPi;
2407 const int type = POPi;
2408 const int domain = POPi;
159b6efe 2409 GV * const gv = MUTABLE_GV(POPs);
5805b585 2410 IO * const io = GvIOn(gv);
a0d0e21e
LW
2411 int fd;
2412
57171420
BS
2413 if (IoIFP(io))
2414 do_close(gv, FALSE);
2415
a0d0e21e 2416 TAINT_PROPER("socket");
6ad3d225 2417 fd = PerlSock_socket(domain, type, protocol);
375ed12a
JH
2418 if (fd < 0) {
2419 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 2420 RETPUSHUNDEF;
375ed12a 2421 }
460c8493
IZ
2422 IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2423 IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2424 IoTYPE(io) = IoTYPE_SOCKET;
a0d0e21e 2425 if (!IoIFP(io) || !IoOFP(io)) {
760ac839
LW
2426 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2427 if (IoOFP(io)) PerlIO_close(IoOFP(io));
6ad3d225 2428 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
a0d0e21e
LW
2429 RETPUSHUNDEF;
2430 }
8d2a6795 2431#if defined(HAS_FCNTL) && defined(F_SETFD)
375ed12a
JH
2432 if (fcntl(fd, F_SETFD, fd > PL_maxsysfd) < 0) /* ensure close-on-exec */
2433 RETPUSHUNDEF;
8d2a6795 2434#endif
a0d0e21e
LW
2435
2436 RETPUSHYES;
a0d0e21e 2437}
7627e6d0 2438#endif
a0d0e21e
LW
2439
2440PP(pp_sockpair)
2441{
c95c94b1 2442#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
20b7effb 2443 dSP;
e0b7b5e2 2444 int fd[2];
7452cf6a
AL
2445 const int protocol = POPi;
2446 const int type = POPi;
2447 const int domain = POPi;
e0b7b5e2 2448
159b6efe 2449 GV * const gv2 = MUTABLE_GV(POPs);
49561e08
FC
2450 IO * const io2 = GvIOn(gv2);
2451 GV * const gv1 = MUTABLE_GV(POPs);
2452 IO * const io1 = GvIOn(gv1);
a0d0e21e 2453
49561e08 2454 if (IoIFP(io1))
dc0d0a5f 2455 do_close(gv1, FALSE);
49561e08 2456 if (IoIFP(io2))
dc0d0a5f 2457 do_close(gv2, FALSE);
57171420 2458
a0d0e21e 2459 TAINT_PROPER("socketpair");
6ad3d225 2460 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
a0d0e21e 2461 RETPUSHUNDEF;
460c8493
IZ
2462 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2463 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
50952442 2464 IoTYPE(io1) = IoTYPE_SOCKET;
460c8493
IZ
2465 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2466 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
50952442 2467 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2468 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW
2469 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2470 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2471 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW
2472 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2473 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2474 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW
2475 RETPUSHUNDEF;
2476 }
8d2a6795 2477#if defined(HAS_FCNTL) && defined(F_SETFD)
375ed12a
JH
2478 /* ensure close-on-exec */
2479 if ((fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd) < 0) ||
2480 (fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd) < 0))
2481 RETPUSHUNDEF;
8d2a6795 2482#endif
a0d0e21e
LW
2483
2484 RETPUSHYES;
2485#else
cea2e8a9 2486 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW
2487#endif
2488}
2489
7627e6d0
NC
2490#ifdef HAS_SOCKET
2491
a0d0e21e
LW
2492PP(pp_bind)
2493{
20b7effb 2494 dSP;
7452cf6a 2495 SV * const addrsv = POPs;
349d4f2f
NC
2496 /* OK, so on what platform does bind modify addr? */
2497 const char *addr;
159b6efe 2498 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2499 IO * const io = GvIOn(gv);
a0d0e21e 2500 STRLEN len;
e0b7b5e2 2501 int op_type;
375ed12a 2502 int fd;
a0d0e21e 2503
8a6c0fcb 2504 if (!IoIFP(io))
a0d0e21e 2505 goto nuts;
375ed12a
JH
2506 fd = PerlIO_fileno(IoIFP(io));
2507 if (fd < 0)
2508 goto nuts;
a0d0e21e 2509
349d4f2f 2510 addr = SvPV_const(addrsv, len);
e0b7b5e2 2511 op_type = PL_op->op_type;
32b81f04
NC
2512 TAINT_PROPER(PL_op_desc[op_type]);
2513 if ((op_type == OP_BIND
375ed12a
JH
2514 ? PerlSock_bind(fd, (struct sockaddr *)addr, len)
2515 : PerlSock_connect(fd, (struct sockaddr *)addr, len))
32b81f04 2516 >= 0)
a0d0e21e
LW
2517 RETPUSHYES;
2518 else
2519 RETPUSHUNDEF;
2520
2521nuts:
fbcda526 2522 report_evil_fh(gv);
93189314 2523 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2524 RETPUSHUNDEF;
a0d0e21e
LW
2525}
2526
2527PP(pp_listen)
2528{
20b7effb 2529 dSP;
7452cf6a 2530 const int backlog = POPi;
159b6efe 2531 GV * const gv = MUTABLE_GV(POPs);
8a6c0fcb 2532 IO * const io = GvIOn(gv);
a0d0e21e 2533
8a6c0fcb 2534 if (!IoIFP(io))
a0d0e21e
LW
2535 goto nuts;
2536
6ad3d225 2537 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW
2538 RETPUSHYES;
2539 else
2540 RETPUSHUNDEF;
2541
2542nuts:
fbcda526 2543 report_evil_fh(gv);
93189314 2544 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2545 RETPUSHUNDEF;
a0d0e21e
LW
2546}
2547
2548PP(pp_accept)
2549{
20b7effb 2550 dSP; dTARGET;
eb578fdb 2551 IO *nstio;
93d47a36 2552 char namebuf[MAXPATHLEN];
b5afd346 2553#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
93d47a36
JH
2554 Sock_size_t len = sizeof (struct sockaddr_in);
2555#else
2556 Sock_size_t len = sizeof namebuf;
2557#endif
159b6efe
NC
2558 GV * const ggv = MUTABLE_GV(POPs);
2559 GV * const ngv = MUTABLE_GV(POPs);
a0d0e21e
LW
2560 int fd;
2561
8a6c0fcb 2562 IO * const gstio = GvIO(ggv);
a0d0e21e
LW
2563 if (!gstio || !IoIFP(gstio))
2564 goto nuts;
2565
2566 nstio = GvIOn(ngv);
93d47a36 2567 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
e294cc5d
JH
2568#if defined(OEMVS)
2569 if (len == 0) {
2570 /* Some platforms indicate zero length when an AF_UNIX client is
2571 * not bound. Simulate a non-zero-length sockaddr structure in
2572 * this case. */
2573 namebuf[0] = 0; /* sun_len */
2574 namebuf[1] = AF_UNIX; /* sun_family */
2575 len = 2;
2576 }
2577#endif
2578
a0d0e21e
LW
2579 if (fd < 0)
2580 goto badexit;
a70048fb
AB
2581 if (IoIFP(nstio))
2582 do_close(ngv, FALSE);
460c8493
IZ
2583 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2584 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2585 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2586 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW
2587 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2588 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2589 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW
2590 goto badexit;
2591 }
8d2a6795 2592#if defined(HAS_FCNTL) && defined(F_SETFD)
375ed12a
JH
2593 if (fcntl(fd, F_SETFD, fd > PL_maxsysfd) < 0) /* ensure close-on-exec */
2594 goto badexit;
8d2a6795 2595#endif
a0d0e21e 2596
381c1bae 2597#ifdef __SCO_VERSION__
93d47a36 2598 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
381c1bae 2599#endif
ed79a026 2600
93d47a36 2601 PUSHp(namebuf, len);
a0d0e21e
LW
2602 RETURN;
2603
2604nuts:
fbcda526 2605 report_evil_fh(ggv);
93189314 2606 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW
2607
2608badexit:
2609 RETPUSHUNDEF;
2610
a0d0e21e
LW
2611}
2612
2613PP(pp_shutdown)
2614{
20b7effb 2615 dSP; dTARGET;
7452cf6a 2616 const int how = POPi;
159b6efe 2617 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2618 IO * const io = GvIOn(gv);
a0d0e21e 2619
8a6c0fcb 2620 if (!IoIFP(io))
a0d0e21e
LW
2621 goto nuts;
2622
6ad3d225 2623 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW
2624 RETURN;
2625
2626nuts:
fbcda526 2627 report_evil_fh(gv);
93189314 2628 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2629 RETPUSHUNDEF;
a0d0e21e
LW
2630}
2631
a0d0e21e
LW
2632PP(pp_ssockopt)
2633{
20b7effb 2634 dSP;
7452cf6a 2635 const int optype = PL_op->op_type;
561b68a9 2636 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
7452cf6a
AL
2637 const unsigned int optname = (unsigned int) POPi;
2638 const unsigned int lvl = (unsigned int) POPi;
159b6efe 2639 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2640 IO * const io = GvIOn(gv);
a0d0e21e 2641 int fd;
1e422769 2642 Sock_size_t len;
a0d0e21e 2643
49225470 2644 if (!IoIFP(io))
a0d0e21e
LW
2645 goto nuts;
2646
760ac839 2647 fd = PerlIO_fileno(IoIFP(io));
375ed12a
JH
2648 if (fd < 0)
2649 goto nuts;
a0d0e21e
LW
2650 switch (optype) {
2651 case OP_GSOCKOPT:
748a9306 2652 SvGROW(sv, 257);
a0d0e21e 2653 (void)SvPOK_only(sv);
748a9306
LW
2654 SvCUR_set(sv,256);
2655 *SvEND(sv) ='\0';
1e422769 2656 len = SvCUR(sv);
6ad3d225 2657 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2658 goto nuts2;
1e422769 2659 SvCUR_set(sv, len);
748a9306 2660 *SvEND(sv) ='\0';
a0d0e21e
LW
2661 PUSHs(sv);
2662 break;
2663 case OP_SSOCKOPT: {
1215b447
JH
2664#if defined(__SYMBIAN32__)
2665# define SETSOCKOPT_OPTION_VALUE_T void *
2666#else
2667# define SETSOCKOPT_OPTION_VALUE_T const char *
2668#endif
2669 /* XXX TODO: We need to have a proper type (a Configure probe,
2670 * etc.) for what the C headers think of the third argument of
2671 * setsockopt(), the option_value read-only buffer: is it
2672 * a "char *", or a "void *", const or not. Some compilers
2673 * don't take kindly to e.g. assuming that "char *" implicitly
2674 * promotes to a "void *", or to explicitly promoting/demoting
2675 * consts to non/vice versa. The "const void *" is the SUS
2676 * definition, but that does not fly everywhere for the above
2677 * reasons. */
2678 SETSOCKOPT_OPTION_VALUE_T buf;
1e422769
PP
2679 int aint;
2680 if (SvPOKp(sv)) {
2d8e6c8d 2681 STRLEN l;
1215b447 2682 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2d8e6c8d 2683 len = l;
1e422769 2684 }
56ee1660 2685 else {
a0d0e21e 2686 aint = (int)SvIV(sv);
1215b447 2687 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
a0d0e21e
LW
2688 len = sizeof(int);
2689 }
6ad3d225 2690 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2691 goto nuts2;
3280af22 2692 PUSHs(&PL_sv_yes);
a0d0e21e
LW
2693 }
2694 break;
2695 }
2696 RETURN;
2697
2698nuts:
fbcda526 2699 report_evil_fh(gv);
93189314 2700 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW
2701nuts2:
2702 RETPUSHUNDEF;
2703
a0d0e21e
LW
2704}
2705
a0d0e21e
LW
2706PP(pp_getpeername)
2707{
20b7effb 2708 dSP;
7452cf6a 2709 const int optype = PL_op->op_type;
159b6efe 2710 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2711 IO * const io = GvIOn(gv);
7452cf6a 2712 Sock_size_t len;
a0d0e21e
LW
2713 SV *sv;
2714 int fd;
a0d0e21e 2715
49225470 2716 if (!IoIFP(io))
a0d0e21e
LW
2717 goto nuts;
2718
561b68a9 2719 sv = sv_2mortal(newSV(257));
748a9306 2720 (void)SvPOK_only(sv);
1e422769
PP
2721 len = 256;
2722 SvCUR_set(sv, len);
748a9306 2723 *SvEND(sv) ='\0';
760ac839 2724 fd = PerlIO_fileno(IoIFP(io));
375ed12a
JH
2725 if (fd < 0)
2726 goto nuts;
a0d0e21e
LW
2727 switch (optype) {
2728 case OP_GETSOCKNAME:
6ad3d225 2729 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW
2730 goto nuts2;
2731 break;
2732 case OP_GETPEERNAME:
6ad3d225 2733 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2734 goto nuts2;
490ab354
JH
2735#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2736 {
2737 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";
2738 /* If the call succeeded, make sure we don't have a zeroed port/addr */
349d4f2f 2739 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2fbb330f 2740 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
490ab354 2741 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2742 goto nuts2;
490ab354
JH
2743 }
2744 }
2745#endif
a0d0e21e
LW
2746 break;
2747 }
13826f2c
CS
2748#ifdef BOGUS_GETNAME_RETURN
2749 /* Interactive Unix, getpeername() and getsockname()
2750 does not return valid namelen */
1e422769
PP
2751 if (len == BOGUS_GETNAME_RETURN)
2752 len = sizeof(struct sockaddr);
13826f2c 2753#endif
1e422769 2754 SvCUR_set(sv, len);
748a9306 2755 *SvEND(sv) ='\0';
a0d0e21e
LW
2756 PUSHs(sv);
2757 RETURN;
2758
2759nuts:
fbcda526 2760 report_evil_fh(gv);
93189314 2761 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW
2762nuts2:
2763 RETPUSHUNDEF;
7627e6d0 2764}
a0d0e21e 2765
a0d0e21e 2766#endif
a0d0e21e
LW
2767
2768/* Stat calls. */
2769
a0d0e21e
LW
2770PP(pp_stat)
2771{
39644a26 2772 dSP;
10edeb5d 2773 GV *gv = NULL;
55dd8d50 2774 IO *io = NULL;
54310121 2775 I32 gimme;
a0d0e21e 2776 I32 max = 13;
109c43ed 2777 SV* sv;
a0d0e21e 2778
109c43ed
FC
2779 if (PL_op->op_flags & OPf_REF ? (gv = cGVOP_gv, 1)
2780 : !!(sv=POPs, gv = MAYBE_DEREF_GV(sv))) {
8a4e5b40 2781 if (PL_op->op_type == OP_LSTAT) {
5d3e98de 2782 if (gv != PL_defgv) {
5d329e6e 2783 do_fstat_warning_check:
a2a5de95 2784 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
93fad930
FC
2785 "lstat() on filehandle%s%"SVf,
2786 gv ? " " : "",
2787 SVfARG(gv
bf29d05f
BF
2788 ? sv_2mortal(newSVhek(GvENAME_HEK(gv)))
2789 : &PL_sv_no));
5d3e98de 2790 } else if (PL_laststype != OP_LSTAT)
b042df57 2791 /* diag_listed_as: The stat preceding %s wasn't an lstat */
8a4e5b40 2792 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
8a4e5b40
DD
2793 }
2794
2dd78f96 2795 if (gv != PL_defgv) {
b8413ac3 2796 bool havefp;
0d5064f1 2797 do_fstat_have_io:
b8413ac3 2798 havefp = FALSE;
3280af22 2799 PL_laststype = OP_STAT;
0d5064f1 2800 PL_statgv = gv ? gv : (GV *)io;
76f68e9b 2801 sv_setpvs(PL_statname, "");
5228a96c 2802 if(gv) {
ad02613c 2803 io = GvIO(gv);
0d5064f1
FC
2804 }
2805 if (io) {
5228a96c 2806 if (IoIFP(io)) {
375ed12a
JH
2807 int fd = PerlIO_fileno(IoIFP(io));
2808 if (fd < 0) {
2809 PL_laststatval = -1;
2810 SETERRNO(EBADF,RMS_IFI);
2811 } else {
2812 PL_laststatval = PerlLIO_fstat(fd, &PL_statcache);
2813 havefp = TRUE;
2814 }
5228a96c 2815 } else if (IoDIRP(io)) {
5228a96c 2816 PL_laststatval =
3497a01f 2817 PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache);
8080e3c8 2818 havefp = TRUE;
5228a96c
SP
2819 } else {
2820 PL_laststatval = -1;
2821 }
5228a96c 2822 }
05bb32d2 2823 else PL_laststatval = -1;
daa30a68 2824 if (PL_laststatval < 0 && !havefp) report_evil_fh(gv);
5228a96c
SP
2825 }
2826
9ddeeac9 2827 if (PL_laststatval < 0) {
a0d0e21e 2828 max = 0;
9ddeeac9 2829 }
a0d0e21e
LW
2830 }
2831 else {
7cb3f959 2832 const char *file;
109c43ed 2833 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2834 io = MUTABLE_IO(SvRV(sv));
ad02613c
SP
2835 if (PL_op->op_type == OP_LSTAT)
2836 goto do_fstat_warning_check;
2837 goto do_fstat_have_io;
2838 }
2839
4bac9ae4 2840 SvTAINTED_off(PL_statname); /* previous tainting irrelevant */
109c43ed 2841 sv_setpv(PL_statname, SvPV_nomg_const_nolen(sv));
a0714e2c 2842 PL_statgv = NULL;
533c011a 2843 PL_laststype = PL_op->op_type;
7cb3f959 2844 file = SvPV_nolen_const(PL_statname);
533c011a 2845 if (PL_op->op_type == OP_LSTAT)
7cb3f959 2846 PL_laststatval = PerlLIO_lstat(file, &PL_statcache);
a0d0e21e 2847 else
7cb3f959 2848 PL_laststatval = PerlLIO_stat(file, &PL_statcache);
3280af22 2849 if (PL_laststatval < 0) {
7cb3f959 2850 if (ckWARN(WARN_NEWLINE) && should_warn_nl(file)) {
5d37acd6
DM
2851 /* PL_warn_nl is constant */
2852 GCC_DIAG_IGNORE(-Wformat-nonliteral);
9014280d 2853 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
5d37acd6
DM
2854 GCC_DIAG_RESTORE;
2855 }
a0d0e21e
LW
2856 max = 0;
2857 }
2858 }
2859
54310121
PP
2860 gimme = GIMME_V;
2861 if (gimme != G_ARRAY) {
2862 if (gimme != G_VOID)
2863 XPUSHs(boolSV(max));
2864 RETURN;
a0d0e21e
LW
2865 }
2866 if (max) {
36477c24
PP
2867 EXTEND(SP, max);
2868 EXTEND_MORTAL(max);
6e449a3a 2869 mPUSHi(PL_statcache.st_dev);
8d8cba88
TC
2870#if ST_INO_SIZE > IVSIZE
2871 mPUSHn(PL_statcache.st_ino);
2872#else
2873# if ST_INO_SIGN <= 0
6e449a3a 2874 mPUSHi(PL_statcache.st_ino);
8d8cba88
TC
2875# else
2876 mPUSHu(PL_statcache.st_ino);
2877# endif
2878#endif
6e449a3a
MHM
2879 mPUSHu(PL_statcache.st_mode);
2880 mPUSHu(PL_statcache.st_nlink);
dfff4baf
BF
2881
2882 sv_setuid(PUSHmortal, PL_statcache.st_uid);
2883 sv_setgid(PUSHmortal, PL_statcache.st_gid);
2884
cbdc8872 2885#ifdef USE_STAT_RDEV
6e449a3a 2886 mPUSHi(PL_statcache.st_rdev);
cbdc8872 2887#else
84bafc02 2888 PUSHs(newSVpvs_flags("", SVs_TEMP));
cbdc8872 2889#endif
146174a9 2890#if Off_t_size > IVSIZE
6e449a3a 2891 mPUSHn(PL_statcache.st_size);
146174a9 2892#else
6e449a3a 2893 mPUSHi(PL_statcache.st_size);
146174a9 2894#endif
cbdc8872 2895#ifdef BIG_TIME
6e449a3a
MHM
2896 mPUSHn(PL_statcache.st_atime);
2897 mPUSHn(PL_statcache.st_mtime);
2898 mPUSHn(PL_statcache.st_ctime);
cbdc8872 2899#else
6e449a3a
MHM
2900 mPUSHi(PL_statcache.st_atime);
2901 mPUSHi(PL_statcache.st_mtime);
2902 mPUSHi(PL_statcache.st_ctime);
cbdc8872 2903#endif
a0d0e21e 2904#ifdef USE_STAT_BLOCKS
6e449a3a
MHM
2905 mPUSHu(PL_statcache.st_blksize);
2906 mPUSHu(PL_statcache.st_blocks);
a0d0e21e 2907#else
84bafc02
NC
2908 PUSHs(newSVpvs_flags("", SVs_TEMP));
2909 PUSHs(newSVpvs_flags("", SVs_TEMP));
a0d0e21e
LW
2910#endif
2911 }
2912 RETURN;
2913}
2914
6c48f025
NC
2915/* All filetest ops avoid manipulating the perl stack pointer in their main
2916 bodies (since commit d2c4d2d1e22d3125), and return using either
2917 S_ft_return_false() or S_ft_return_true(). These two helper functions are
2918 the only two which manipulate the perl stack. To ensure that no stack
2919 manipulation macros are used, the filetest ops avoid defining a local copy
2920 of the stack pointer with dSP. */
2921
8db8f6b6
FC
2922/* If the next filetest is stacked up with this one
2923 (PL_op->op_private & OPpFT_STACKING), we leave
2924 the original argument on the stack for success,
2925 and skip the stacked operators on failure.
2926 The next few macros/functions take care of this.
2927*/
2928
2929static OP *
9a6b02e8 2930S_ft_return_false(pTHX_ SV *ret) {
8db8f6b6 2931 OP *next = NORMAL;
697f9d37
NC
2932 dSP;
2933
226b9201 2934 if (PL_op->op_flags & OPf_REF) XPUSHs(ret);
8db8f6b6
FC
2935 else SETs(ret);
2936 PUTBACK;
697f9d37 2937
9a6b02e8
NC
2938 if (PL_op->op_private & OPpFT_STACKING) {
2939 while (OP_IS_FILETEST(next->op_type)
2940 && next->op_private & OPpFT_STACKED)
2941 next = next->op_next;
2942 }
8db8f6b6
FC
2943 return next;
2944}
2945
07ed4d4b
NC
2946PERL_STATIC_INLINE OP *
2947S_ft_return_true(pTHX_ SV *ret) {
2948 dSP;
2949 if (PL_op->op_flags & OPf_REF)
2950 XPUSHs(PL_op->op_private & OPpFT_STACKING ? (SV *)cGVOP_gv : (ret));
2951 else if (!(PL_op->op_private & OPpFT_STACKING))
2952 SETs(ret);
2953 PUTBACK;
2954 return NORMAL;
2955}
8db8f6b6 2956
48d023d6
NC
2957#define FT_RETURNNO return S_ft_return_false(aTHX_ &PL_sv_no)
2958#define FT_RETURNUNDEF return S_ft_return_false(aTHX_ &PL_sv_undef)
2959#define FT_RETURNYES return S_ft_return_true(aTHX_ &PL_sv_yes)
8db8f6b6 2960
6f1401dc 2961#define tryAMAGICftest_MG(chr) STMT_START { \
d2f67720 2962 if ( (SvFLAGS(*PL_stack_sp) & (SVf_ROK|SVs_GMG)) \
8db8f6b6
FC
2963 && PL_op->op_flags & OPf_KIDS) { \
2964 OP *next = S_try_amagic_ftest(aTHX_ chr); \
2965 if (next) return next; \
2966 } \
6f1401dc
DM
2967 } STMT_END
2968
8db8f6b6 2969STATIC OP *
6f1401dc 2970S_try_amagic_ftest(pTHX_ char chr) {
d2f67720 2971 SV *const arg = *PL_stack_sp;
6f1401dc
DM
2972
2973 assert(chr != '?');
c5780028 2974 if (!(PL_op->op_private & OPpFT_STACKING)) SvGETMAGIC(arg);
6f1401dc 2975
d2f67720 2976 if (SvAMAGIC(arg))
6f1401dc
DM
2977 {
2978 const char tmpchr = chr;
6f1401dc
DM
2979 SV * const tmpsv = amagic_call(arg,
2980 newSVpvn_flags(&tmpchr, 1, SVs_TEMP),
2981 ftest_amg, AMGf_unary);
2982
2983 if (!tmpsv)
8db8f6b6 2984 return NULL;
6f1401dc 2985
48d023d6
NC
2986 return SvTRUE(tmpsv)
2987 ? S_ft_return_true(aTHX_ tmpsv) : S_ft_return_false(aTHX_ tmpsv);
6f1401dc 2988 }
8db8f6b6 2989 return NULL;
6f1401dc
DM
2990}
2991
2992
a0d0e21e
LW
2993PP(pp_ftrread)
2994{
9cad6237 2995 I32 result;
af9e49b4
NC
2996 /* Not const, because things tweak this below. Not bool, because there's
2997 no guarantee that OPp_FT_ACCESS is <= CHAR_MAX */
2998#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2999 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
3000 /* Giving some sort of initial value silences compilers. */
3001# ifdef R_OK
3002 int access_mode = R_OK;
3003# else
3004 int access_mode = 0;
3005# endif
5ff3f7a4 3006#else
af9e49b4
NC
3007 /* access_mode is never used, but leaving use_access in makes the
3008 conditional compiling below much clearer. */
3009 I32 use_access = 0;
5ff3f7a4 3010#endif
2dcac756 3011 Mode_t stat_mode = S_IRUSR;
a0d0e21e 3012
af9e49b4 3013 bool effective = FALSE;
07fe7c6a 3014 char opchar = '?';
af9e49b4 3015
7fb13887
BM
3016 switch (PL_op->op_type) {
3017 case OP_FTRREAD: opchar = 'R'; break;
3018 case OP_FTRWRITE: opchar = 'W'; break;
3019 case OP_FTREXEC: opchar = 'X'; break;
3020 case OP_FTEREAD: opchar = 'r'; break;
3021 case OP_FTEWRITE: opchar = 'w'; break;
3022 case OP_FTEEXEC: opchar = 'x'; break;
3023 }
6f1401dc 3024 tryAMAGICftest_MG(opchar);
7fb13887 3025
af9e49b4
NC
3026 switch (PL_op->op_type) {
3027 case OP_FTRREAD:
3028#if !(defined(HAS_ACCESS) && defined(R_OK))
3029 use_access = 0;
3030#endif
3031 break;
3032
3033 case OP_FTRWRITE:
5ff3f7a4 3034#if defined(HAS_ACCESS) && defined(W_OK)
af9e49b4 3035 access_mode = W_OK;
5ff3f7a4 3036#else
af9e49b4 3037 use_access = 0;
5ff3f7a4 3038#endif
af9e49b4
NC
3039 stat_mode = S_IWUSR;
3040 break;
a0d0e21e 3041
af9e49b4 3042 case OP_FTREXEC:
5ff3f7a4 3043#if defined(HAS_ACCESS) && defined(X_OK)
af9e49b4 3044 access_mode = X_OK;
5ff3f7a4 3045#else
af9e49b4 3046 use_access = 0;
5ff3f7a4 3047#endif
af9e49b4
NC
3048 stat_mode = S_IXUSR;
3049 break;
a0d0e21e 3050
af9e49b4 3051 case OP_FTEWRITE:
faee0e31 3052#ifdef PERL_EFF_ACCESS
af9e49b4 3053 access_mode = W_OK;
5ff3f7a4 3054#endif
af9e49b4 3055 stat_mode = S_IWUSR;
924ba076 3056 /* FALLTHROUGH */
a0d0e21e 3057
af9e49b4
NC
3058 case OP_FTEREAD:
3059#ifndef PERL_EFF_ACCESS
3060 use_access = 0;
3061#endif
3062 effective = TRUE;
3063 break;
3064
af9e49b4 3065 case OP_FTEEXEC:
faee0e31 3066#ifdef PERL_EFF_ACCESS
b376053d 3067 access_mode = X_OK;
5ff3f7a4 3068#else
af9e49b4 3069 use_access = 0;
5ff3f7a4 3070#endif
af9e49b4
NC
3071 stat_mode = S_IXUSR;
3072 effective = TRUE;
3073 break;
3074 }
a0d0e21e 3075
af9e49b4
NC
3076 if (use_access) {
3077#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
d2f67720 3078 const char *name = SvPV_nolen(*PL_stack_sp);
af9e49b4
NC
3079 if (effective) {
3080# ifdef PERL_EFF_ACCESS
3081 result = PERL_EFF_ACCESS(name, access_mode);
3082# else
3083 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
3084 OP_NAME(PL_op));
3085# endif
3086 }
3087 else {
3088# ifdef HAS_ACCESS
3089 result = access(name, access_mode);
3090# else
3091 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
3092# endif
3093 }
5ff3f7a4 3094 if (result == 0)
d2c4d2d1 3095 FT_RETURNYES;
5ff3f7a4 3096 if (result < 0)
d2c4d2d1
FC
3097 FT_RETURNUNDEF;
3098 FT_RETURNNO;
af9e49b4 3099#endif
22865c03 3100 }
af9e49b4 3101
40c852de 3102 result = my_stat_flags(0);
a0d0e21e 3103 if (result < 0)
8db8f6b6 3104 FT_RETURNUNDEF;
af9e49b4 3105 if (cando(stat_mode, effective, &PL_statcache))
8db8f6b6
FC
3106 FT_RETURNYES;
3107 FT_RETURNNO;
a0d0e21e
LW
3108}
3109
3110PP(pp_ftis)
3111{
fbb0b3b3 3112 I32 result;
d7f0a2f4 3113 const int op_type = PL_op->op_type;
07fe7c6a 3114 char opchar = '?';
07fe7c6a
BM
3115
3116 switch (op_type) {
3117 case OP_FTIS: opchar = 'e'; break;
3118 case OP_FTSIZE: opchar = 's'; break;
3119 case OP_FTMTIME: opchar = 'M'; break;
3120 case OP_FTCTIME: opchar = 'C'; break;
3121 case OP_FTATIME: opchar = 'A'; break;
3122 }
6f1401dc 3123 tryAMAGICftest_MG(opchar);
07fe7c6a 3124
40c852de 3125 result = my_stat_flags(0);
a0d0e21e 3126 if (result < 0)
8db8f6b6 3127 FT_RETURNUNDEF;
d7f0a2f4 3128 if (op_type == OP_FTIS)
8db8f6b6 3129 FT_RETURNYES;
957b0e1d 3130 {
d7f0a2f4
NC
3131 /* You can't dTARGET inside OP_FTIS, because you'll get
3132 "panic: pad_sv po" - the op is not flagged to have a target. */
957b0e1d 3133 dTARGET;
d7f0a2f4 3134 switch (op_type) {
957b0e1d
NC
3135 case OP_FTSIZE:
3136#if Off_t_size > IVSIZE
8db8f6b6 3137 sv_setnv(TARG, (NV)PL_statcache.st_size);
957b0e1d 3138#else
8db8f6b6 3139 sv_setiv(TARG, (IV)PL_statcache.st_size);
957b0e1d
NC
3140#endif
3141 break;
3142 case OP_FTMTIME:
8db8f6b6
FC
3143 sv_setnv(TARG,
3144 ((NV)PL_basetime - PL_statcache.st_mtime) / 86400.0 );
957b0e1d
NC
3145 break;
3146 case OP_FTATIME:
8db8f6b6
FC
3147 sv_setnv(TARG,
3148 ((NV)PL_basetime - PL_statcache.st_atime) / 86400.0 );
957b0e1d
NC
3149 break;
3150 case OP_FTCTIME:
8db8f6b6
FC
3151 sv_setnv(TARG,
3152 ((NV)PL_basetime - PL_statcache.st_ctime) / 86400.0 );
957b0e1d
NC
3153 break;
3154 }
8db8f6b6 3155 SvSETMAGIC(TARG);
48d023d6
NC
3156 return SvTRUE_nomg(TARG)
3157 ? S_ft_return_true(aTHX_ TARG) : S_ft_return_false(aTHX_ TARG);
957b0e1d 3158 }
a0d0e21e
LW
3159}
3160
a0d0e21e
LW
3161PP(pp_ftrowned)
3162{
fbb0b3b3 3163 I32 result;
07fe7c6a 3164 char opchar = '?';
17ad201a 3165
7fb13887
BM
3166 switch (PL_op->op_type) {
3167 case OP_FTROWNED: opchar = 'O'; break;
3168 case OP_FTEOWNED: opchar = 'o'; break;
3169 case OP_FTZERO: opchar = 'z'; break;
3170 case OP_FTSOCK: opchar = 'S'; break;
3171 case OP_FTCHR: opchar = 'c'; break;
3172 case OP_FTBLK: opchar = 'b'; break;
3173 case OP_FTFILE: opchar = 'f'; break;
3174 case OP_FTDIR: opchar = 'd'; break;
3175 case OP_FTPIPE: opchar = 'p'; break;
3176 case OP_FTSUID: opchar = 'u'; break;
3177 case OP_FTSGID: opchar = 'g'; break;
3178 case OP_FTSVTX: opchar = 'k'; break;
3179 }
6f1401dc 3180 tryAMAGICftest_MG(opchar);
7fb13887 3181
17ad201a
NC
3182 /* I believe that all these three are likely to be defined on most every
3183 system these days. */
3184#ifndef S_ISUID
c410dd6a 3185 if(PL_op->op_type == OP_FTSUID) {
8db8f6b6 3186 FT_RETURNNO;
c410dd6a 3187 }
17ad201a
NC
3188#endif
3189#ifndef S_ISGID
c410dd6a 3190 if(PL_op->op_type == OP_FTSGID) {
8db8f6b6 3191 FT_RETURNNO;
c410dd6a 3192 }
17ad201a
NC
3193#endif
3194#ifndef S_ISVTX
c410dd6a 3195 if(PL_op->op_type == OP_FTSVTX) {
8db8f6b6 3196 FT_RETURNNO;
c410dd6a 3197 }
17ad201a
NC
3198#endif
3199
40c852de 3200 result = my_stat_flags(0);
a0d0e21e 3201 if (result < 0)
8db8f6b6 3202 FT_RETURNUNDEF;
f1cb2d48
NC
3203 switch (PL_op->op_type) {
3204 case OP_FTROWNED:
985213f2 3205 if (PL_statcache.st_uid == PerlProc_getuid())
8db8f6b6 3206 FT_RETURNYES;
f1cb2d48
NC
3207 break;
3208 case OP_FTEOWNED:
985213f2 3209 if (PL_statcache.st_uid == PerlProc_geteuid())
8db8f6b6 3210 FT_RETURNYES;
f1cb2d48
NC
3211 break;
3212 case OP_FTZERO:
3213 if (PL_statcache.st_size == 0)
8db8f6b6 3214 FT_RETURNYES;
f1cb2d48
NC
3215 break;
3216 case OP_FTSOCK:
3217 if (S_ISSOCK(PL_statcache.st_mode))
8db8f6b6 3218 FT_RETURNYES;
f1cb2d48
NC
3219 break;
3220 case OP_FTCHR:
3221 if (S_ISCHR(PL_statcache.st_mode))
8db8f6b6 3222 FT_RETURNYES;
f1cb2d48
NC
3223 break;
3224 case OP_FTBLK:
3225 if (S_ISBLK(PL_statcache.st_mode))
8db8f6b6 3226 FT_RETURNYES;
f1cb2d48
NC
3227 break;
3228 case OP_FTFILE:
3229 if (S_ISREG(PL_statcache.st_mode))
8db8f6b6 3230 FT_RETURNYES;
f1cb2d48
NC
3231 break;
3232 case OP_FTDIR:
3233 if (S_ISDIR(PL_statcache.st_mode))
8db8f6b6 3234 FT_RETURNYES;
f1cb2d48
NC
3235 break;
3236 case OP_FTPIPE:
3237 if (S_ISFIFO(PL_statcache.st_mode))
8db8f6b6 3238 FT_RETURNYES;
f1cb2d48 3239 break;
a0d0e21e 3240#ifdef S_ISUID
17ad201a
NC
3241 case OP_FTSUID:
3242 if (PL_statcache.st_mode & S_ISUID)
8db8f6b6 3243 FT_RETURNYES;
17ad201a 3244 break;
a0d0e21e 3245#endif
a0d0e21e 3246#ifdef S_ISGID
17ad201a
NC
3247 case OP_FTSGID:
3248 if (PL_statcache.st_mode & S_ISGID)
8db8f6b6 3249 FT_RETURNYES;
17ad201a
NC
3250 break;
3251#endif
3252#ifdef S_ISVTX
3253 case OP_FTSVTX:
3254 if (PL_statcache.st_mode & S_ISVTX)
8db8f6b6 3255 FT_RETURNYES;
17ad201a 3256 break;
a0d0e21e 3257#endif
17ad201a 3258 }
8db8f6b6 3259 FT_RETURNNO;
a0d0e21e
LW
3260}
3261
17ad201a 3262PP(pp_ftlink)
a0d0e21e 3263{
500ff13f 3264 I32 result;
07fe7c6a 3265
6f1401dc 3266 tryAMAGICftest_MG('l');
40c852de 3267 result = my_lstat_flags(0);
500ff13f 3268
a0d0e21e 3269 if (result < 0)
8db8f6b6 3270 FT_RETURNUNDEF;
17ad201a 3271 if (S_ISLNK(PL_statcache.st_mode))
8db8f6b6
FC
3272 FT_RETURNYES;
3273 FT_RETURNNO;
a0d0e21e
LW
3274}
3275
3276PP(pp_fttty)
3277{
a0d0e21e
LW
3278 int fd;
3279 GV *gv;
0784aae0 3280 char *name = NULL;
40c852de 3281 STRLEN namelen;
fb73857a 3282
6f1401dc 3283 tryAMAGICftest_MG('t');
07fe7c6a 3284
533c011a 3285 if (PL_op->op_flags & OPf_REF)
146174a9 3286 gv = cGVOP_gv;
e5e154d2 3287 else {
d2f67720 3288 SV *tmpsv = *PL_stack_sp;
e5e154d2 3289 if (!(gv = MAYBE_DEREF_GV_nomg(tmpsv))) {
40c852de
DM
3290 name = SvPV_nomg(tmpsv, namelen);
3291 gv = gv_fetchpvn_flags(name, namelen, SvUTF8(tmpsv), SVt_PVIO);
e5e154d2 3292 }
40c852de 3293 }
fb73857a 3294
a0d0e21e 3295 if (GvIO(gv) && IoIFP(GvIOp(gv)))
760ac839 3296 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
b6cb94c5 3297 else if (name && isDIGIT(*name))
96e440d2 3298 fd = grok_atou(name, NULL);
a0d0e21e 3299 else
8db8f6b6 3300 FT_RETURNUNDEF;
375ed12a
JH
3301 if (fd < 0) {
3302 SETERRNO(EBADF,RMS_IFI);
3303 FT_RETURNUNDEF;
3304 }
6ad3d225 3305 if (PerlLIO_isatty(fd))
8db8f6b6
FC
3306 FT_RETURNYES;
3307 FT_RETURNNO;
a0d0e21e
LW
3308}
3309
a0d0e21e
LW
3310PP(pp_fttext)
3311{
a0d0e21e 3312 I32 i;
b66f3475 3313 SSize_t len;
a0d0e21e
LW
3314 I32 odd = 0;
3315 STDCHAR tbuf[512];
eb578fdb
KW
3316 STDCHAR *s;
3317 IO *io;
3318 SV *sv = NULL;
5f05dabc 3319 GV *gv;
146174a9 3320 PerlIO *fp;
a0d0e21e 3321
6f1401dc 3322 tryAMAGICftest_MG(PL_op->op_type == OP_FTTEXT ? 'T' : 'B');
07fe7c6a 3323
533c011a 3324 if (PL_op->op_flags & OPf_REF)
146174a9 3325 gv = cGVOP_gv;
d2c4d2d1 3326 else if ((PL_op->op_private & (OPpFT_STACKED|OPpFT_AFTER_t))
8db8f6b6 3327 == OPpFT_STACKED)
ba8182f8 3328 gv = PL_defgv;
d2c4d2d1 3329 else {
d2f67720 3330 sv = *PL_stack_sp;
d2c4d2d1 3331 gv = MAYBE_DEREF_GV_nomg(sv);
8db8f6b6 3332 }
5f05dabc
PP
3333
3334 if (gv) {
3280af22
NIS
3335 if (gv == PL_defgv) {
3336 if (PL_statgv)
bd5f6c01
FC
3337 io = SvTYPE(PL_statgv) == SVt_PVIO
3338 ? (IO *)PL_statgv
3339 : GvIO(PL_statgv);
a0d0e21e 3340 else {
a0d0e21e
LW
3341 goto really_filename;
3342 }
3343 }
3344 else {
3280af22 3345 PL_statgv = gv;
76f68e9b 3346 sv_setpvs(PL_statname, "");
3280af22 3347 io = GvIO(PL_statgv);
a0d0e21e 3348 }
eb4c377a 3349 PL_laststatval = -1;
21a64c3e 3350 PL_laststype = OP_STAT;
a0d0e21e 3351 if (io && IoIFP(io)) {