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[perl5.git] / pp_sys.c
CommitLineData
a0d0e21e
LW
1/* pp_sys.c
2 *
fdf8c088 3 * Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
1129b882 4 * 2004, 2005, 2006, 2007, 2008 by Larry Wall and others
a0d0e21e
LW
5 *
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
8 *
9 */
10
11/*
12 * But only a short way ahead its floor and the walls on either side were
13 * cloven by a great fissure, out of which the red glare came, now leaping
14 * up, now dying down into darkness; and all the while far below there was
15 * a rumour and a trouble as of great engines throbbing and labouring.
4ac71550
TC
16 *
17 * [p.945 of _The Lord of the Rings_, VI/iii: "Mount Doom"]
a0d0e21e
LW
18 */
19
166f8a29
DM
20/* This file contains system pp ("push/pop") functions that
21 * execute the opcodes that make up a perl program. A typical pp function
22 * expects to find its arguments on the stack, and usually pushes its
23 * results onto the stack, hence the 'pp' terminology. Each OP structure
24 * contains a pointer to the relevant pp_foo() function.
25 *
26 * By 'system', we mean ops which interact with the OS, such as pp_open().
27 */
28
a0d0e21e 29#include "EXTERN.h"
864dbfa3 30#define PERL_IN_PP_SYS_C
a0d0e21e 31#include "perl.h"
d95a2ea5 32#include "time64.h"
a0d0e21e 33
f1066039
JH
34#ifdef I_SHADOW
35/* Shadow password support for solaris - pdo@cs.umd.edu
36 * Not just Solaris: at least HP-UX, IRIX, Linux.
3813c136
JH
37 * The API is from SysV.
38 *
39 * There are at least two more shadow interfaces,
40 * see the comments in pp_gpwent().
41 *
42 * --jhi */
43# ifdef __hpux__
c529f79d 44/* There is a MAXINT coming from <shadow.h> <- <hpsecurity.h> <- <values.h>
301e8125 45 * and another MAXINT from "perl.h" <- <sys/param.h>. */
3813c136
JH
46# undef MAXINT
47# endif
48# include <shadow.h>
8c0bfa08
PB
49#endif
50
76c32331
PP
51#ifdef I_SYS_RESOURCE
52# include <sys/resource.h>
16d20bd9 53#endif
a0d0e21e 54
2986a63f
JH
55#ifdef NETWARE
56NETDB_DEFINE_CONTEXT
57#endif
58
a0d0e21e 59#ifdef HAS_SELECT
1e743fda
JH
60# ifdef I_SYS_SELECT
61# include <sys/select.h>
62# endif
a0d0e21e 63#endif
a0d0e21e 64
dc45a647
MB
65/* XXX Configure test needed.
66 h_errno might not be a simple 'int', especially for multi-threaded
5ff3f7a4
GS
67 applications, see "extern int errno in perl.h". Creating such
68 a test requires taking into account the differences between
69 compiling multithreaded and singlethreaded ($ccflags et al).
70 HOST_NOT_FOUND is typically defined in <netdb.h>.
dc45a647 71*/
cb50131a 72#if defined(HOST_NOT_FOUND) && !defined(h_errno) && !defined(__CYGWIN__)
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LW
73extern int h_errno;
74#endif
75
76#ifdef HAS_PASSWD
77# ifdef I_PWD
78# include <pwd.h>
79# else
fd8cd3a3 80# if !defined(VMS)
20ce7b12
GS
81 struct passwd *getpwnam (char *);
82 struct passwd *getpwuid (Uid_t);
fd8cd3a3 83# endif
a0d0e21e 84# endif
28e8609d 85# ifdef HAS_GETPWENT
10bc17b6 86#ifndef getpwent
20ce7b12 87 struct passwd *getpwent (void);
c2a8f790 88#elif defined (VMS) && defined (my_getpwent)
9fa802f3 89 struct passwd *Perl_my_getpwent (pTHX);
10bc17b6 90#endif
28e8609d 91# endif
a0d0e21e
LW
92#endif
93
94#ifdef HAS_GROUP
95# ifdef I_GRP
96# include <grp.h>
97# else
20ce7b12
GS
98 struct group *getgrnam (char *);
99 struct group *getgrgid (Gid_t);
a0d0e21e 100# endif
28e8609d 101# ifdef HAS_GETGRENT
10bc17b6 102#ifndef getgrent
20ce7b12 103 struct group *getgrent (void);
10bc17b6 104#endif
28e8609d 105# endif
a0d0e21e
LW
106#endif
107
108#ifdef I_UTIME
3730b96e 109# if defined(_MSC_VER) || defined(__MINGW32__)
3fe9a6f1
PP
110# include <sys/utime.h>
111# else
112# include <utime.h>
113# endif
a0d0e21e 114#endif
a0d0e21e 115
cbdc8872 116#ifdef HAS_CHSIZE
cd52b7b2
PP
117# ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
118# undef my_chsize
119# endif
72cc7e2a 120# define my_chsize PerlLIO_chsize
27da23d5
JH
121#else
122# ifdef HAS_TRUNCATE
123# define my_chsize PerlLIO_chsize
124# else
125I32 my_chsize(int fd, Off_t length);
126# endif
cbdc8872
PP
127#endif
128
ff68c719
PP
129#ifdef HAS_FLOCK
130# define FLOCK flock
131#else /* no flock() */
132
36477c24
PP
133 /* fcntl.h might not have been included, even if it exists, because
134 the current Configure only sets I_FCNTL if it's needed to pick up
135 the *_OK constants. Make sure it has been included before testing
136 the fcntl() locking constants. */
137# if defined(HAS_FCNTL) && !defined(I_FCNTL)
138# include <fcntl.h>
139# endif
140
9d9004a9 141# if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
ff68c719
PP
142# define FLOCK fcntl_emulate_flock
143# define FCNTL_EMULATE_FLOCK
144# else /* no flock() or fcntl(F_SETLK,...) */
145# ifdef HAS_LOCKF
146# define FLOCK lockf_emulate_flock
147# define LOCKF_EMULATE_FLOCK
148# endif /* lockf */
149# endif /* no flock() or fcntl(F_SETLK,...) */
150
151# ifdef FLOCK
20ce7b12 152 static int FLOCK (int, int);
ff68c719
PP
153
154 /*
155 * These are the flock() constants. Since this sytems doesn't have
156 * flock(), the values of the constants are probably not available.
157 */
158# ifndef LOCK_SH
159# define LOCK_SH 1
160# endif
161# ifndef LOCK_EX
162# define LOCK_EX 2
163# endif
164# ifndef LOCK_NB
165# define LOCK_NB 4
166# endif
167# ifndef LOCK_UN
168# define LOCK_UN 8
169# endif
170# endif /* emulating flock() */
171
172#endif /* no flock() */
55497cff 173
85ab1d1d 174#define ZBTLEN 10
27da23d5 175static const char zero_but_true[ZBTLEN + 1] = "0 but true";
85ab1d1d 176
5ff3f7a4
GS
177#if defined(I_SYS_ACCESS) && !defined(R_OK)
178# include <sys/access.h>
179#endif
180
a4af207c
JH
181#include "reentr.h"
182
9cffb111
OS
183#ifdef __Lynx__
184/* Missing protos on LynxOS */
185void sethostent(int);
186void endhostent(void);
187void setnetent(int);
188void endnetent(void);
189void setprotoent(int);
190void endprotoent(void);
191void setservent(int);
192void endservent(void);
193#endif
194
40262ff4
AB
195#ifdef __amigaos4__
196# include "amigaos4/amigaio.h"
197#endif
198
faee0e31 199#undef PERL_EFF_ACCESS /* EFFective uid/gid ACCESS */
5ff3f7a4
GS
200
201/* F_OK unused: if stat() cannot find it... */
202
d7558cad 203#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
c955f117 204 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
d7558cad 205# define PERL_EFF_ACCESS(p,f) (access((p), (f) | EFF_ONLY_OK))
5ff3f7a4
GS
206#endif
207
d7558cad 208#if !defined(PERL_EFF_ACCESS) && defined(HAS_EACCESS)
3813c136 209# ifdef I_SYS_SECURITY
5ff3f7a4
GS
210# include <sys/security.h>
211# endif
c955f117
JH
212# ifdef ACC_SELF
213 /* HP SecureWare */
d7558cad 214# define PERL_EFF_ACCESS(p,f) (eaccess((p), (f), ACC_SELF))
c955f117
JH
215# else
216 /* SCO */
d7558cad 217# define PERL_EFF_ACCESS(p,f) (eaccess((p), (f)))
c955f117 218# endif
5ff3f7a4
GS
219#endif
220
d7558cad 221#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESSX) && defined(ACC_SELF)
c955f117 222 /* AIX */
d7558cad 223# define PERL_EFF_ACCESS(p,f) (accessx((p), (f), ACC_SELF))
5ff3f7a4
GS
224#endif
225
d7558cad
NC
226
227#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) \
327c3667
GS
228 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
229 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
5ff3f7a4 230/* The Hard Way. */
327c3667 231STATIC int
7f4774ae 232S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
ba106d47 233{
c4420975
AL
234 const Uid_t ruid = getuid();
235 const Uid_t euid = geteuid();
236 const Gid_t rgid = getgid();
237 const Gid_t egid = getegid();
5ff3f7a4
GS
238 int res;
239
5ff3f7a4 240#if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
cea2e8a9 241 Perl_croak(aTHX_ "switching effective uid is not implemented");
5ff3f7a4
GS
242#else
243#ifdef HAS_SETREUID
244 if (setreuid(euid, ruid))
245#else
246#ifdef HAS_SETRESUID
247 if (setresuid(euid, ruid, (Uid_t)-1))
248#endif
249#endif
dcbac5bb 250 /* diag_listed_as: entering effective %s failed */
cea2e8a9 251 Perl_croak(aTHX_ "entering effective uid failed");
5ff3f7a4
GS
252#endif
253
254#if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
cea2e8a9 255 Perl_croak(aTHX_ "switching effective gid is not implemented");
5ff3f7a4
GS
256#else
257#ifdef HAS_SETREGID
258 if (setregid(egid, rgid))
259#else
260#ifdef HAS_SETRESGID
261 if (setresgid(egid, rgid, (Gid_t)-1))
262#endif
263#endif
dcbac5bb 264 /* diag_listed_as: entering effective %s failed */
cea2e8a9 265 Perl_croak(aTHX_ "entering effective gid failed");
5ff3f7a4
GS
266#endif
267
268 res = access(path, mode);
269
270#ifdef HAS_SETREUID
271 if (setreuid(ruid, euid))
272#else
273#ifdef HAS_SETRESUID
274 if (setresuid(ruid, euid, (Uid_t)-1))
275#endif
276#endif
dcbac5bb 277 /* diag_listed_as: leaving effective %s failed */
cea2e8a9 278 Perl_croak(aTHX_ "leaving effective uid failed");
5ff3f7a4
GS
279
280#ifdef HAS_SETREGID
281 if (setregid(rgid, egid))
282#else
283#ifdef HAS_SETRESGID
284 if (setresgid(rgid, egid, (Gid_t)-1))
285#endif
286#endif
dcbac5bb 287 /* diag_listed_as: leaving effective %s failed */
cea2e8a9 288 Perl_croak(aTHX_ "leaving effective gid failed");
5ff3f7a4
GS
289
290 return res;
291}
d6864606 292# define PERL_EFF_ACCESS(p,f) (S_emulate_eaccess(aTHX_ (p), (f)))
5ff3f7a4
GS
293#endif
294
a0d0e21e
LW
295PP(pp_backtick)
296{
20b7effb 297 dSP; dTARGET;
760ac839 298 PerlIO *fp;
1b6737cc 299 const char * const tmps = POPpconstx;
f54cb97a 300 const I32 gimme = GIMME_V;
e1ec3a88 301 const char *mode = "r";
54310121 302
a0d0e21e 303 TAINT_PROPER("``");
16fe6d59
GS
304 if (PL_op->op_private & OPpOPEN_IN_RAW)
305 mode = "rb";
306 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
307 mode = "rt";
2fbb330f 308 fp = PerlProc_popen(tmps, mode);
a0d0e21e 309 if (fp) {
11bcd5da 310 const char * const type = Perl_PerlIO_context_layers(aTHX_ NULL);
ac27b0f5
NIS
311 if (type && *type)
312 PerlIO_apply_layers(aTHX_ fp,mode,type);
313
54310121 314 if (gimme == G_VOID) {
96827780
MB
315 char tmpbuf[256];
316 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
a79db61d 317 NOOP;
54310121
PP
318 }
319 else if (gimme == G_SCALAR) {
d343c3ef 320 ENTER_with_name("backtick");
75af1a9c 321 SAVESPTR(PL_rs);
fa326138 322 PL_rs = &PL_sv_undef;
76f68e9b 323 sv_setpvs(TARG, ""); /* note that this preserves previous buffer */
bd61b366 324 while (sv_gets(TARG, fp, SvCUR(TARG)) != NULL)
a79db61d 325 NOOP;
d343c3ef 326 LEAVE_with_name("backtick");
a0d0e21e 327 XPUSHs(TARG);
aa689395 328 SvTAINTED_on(TARG);
a0d0e21e
LW
329 }
330 else {
a0d0e21e 331 for (;;) {
561b68a9 332 SV * const sv = newSV(79);
bd61b366 333 if (sv_gets(sv, fp, 0) == NULL) {
a0d0e21e
LW
334 SvREFCNT_dec(sv);
335 break;
336 }
6e449a3a 337 mXPUSHs(sv);
a0d0e21e 338 if (SvLEN(sv) - SvCUR(sv) > 20) {
1da4ca5f 339 SvPV_shrink_to_cur(sv);
a0d0e21e 340 }
aa689395 341 SvTAINTED_on(sv);
a0d0e21e
LW
342 }
343 }
2fbb330f 344 STATUS_NATIVE_CHILD_SET(PerlProc_pclose(fp));
aa689395 345 TAINT; /* "I believe that this is not gratuitous!" */
a0d0e21e
LW
346 }
347 else {
37038d91 348 STATUS_NATIVE_CHILD_SET(-1);
54310121 349 if (gimme == G_SCALAR)
a0d0e21e
LW
350 RETPUSHUNDEF;
351 }
352
353 RETURN;
354}
355
356PP(pp_glob)
357{
358 OP *result;
9426e1a5 359 dSP;
9423a867
FC
360 GV * const gv = (PL_op->op_flags & OPf_SPECIAL) ? NULL : (GV *)POPs;
361
362 PUTBACK;
363
151cea25
FC
364 /* make a copy of the pattern if it is gmagical, to ensure that magic
365 * is called once and only once */
9423a867 366 if (SvGMAGICAL(TOPs)) TOPs = sv_2mortal(newSVsv(TOPs));
9426e1a5 367
fc99edcf 368 tryAMAGICunTARGETlist(iter_amg, (PL_op->op_flags & OPf_SPECIAL));
d1bea3d8
DM
369
370 if (PL_op->op_flags & OPf_SPECIAL) {
371 /* call Perl-level glob function instead. Stack args are:
9423a867 372 * MARK, wildcard
d1bea3d8
DM
373 * and following OPs should be: gv(CORE::GLOBAL::glob), entersub
374 * */
375 return NORMAL;
376 }
d67594ff 377 if (PL_globhook) {
d67594ff
FC
378 PL_globhook(aTHX);
379 return NORMAL;
380 }
f5284f61 381
71686f12
GS
382 /* Note that we only ever get here if File::Glob fails to load
383 * without at the same time croaking, for some reason, or if
384 * perl was built with PERL_EXTERNAL_GLOB */
385
d343c3ef 386 ENTER_with_name("glob");
a0d0e21e 387
c90c0ff4 388#ifndef VMS
284167a5 389 if (TAINTING_get) {
7bac28a0
PP
390 /*
391 * The external globbing program may use things we can't control,
392 * so for security reasons we must assume the worst.
393 */
394 TAINT;
22c35a8c 395 taint_proper(PL_no_security, "glob");
7bac28a0 396 }
c90c0ff4 397#endif /* !VMS */
7bac28a0 398
3280af22 399 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
9423a867 400 PL_last_in_gv = gv;
a0d0e21e 401
3280af22 402 SAVESPTR(PL_rs); /* This is not permanent, either. */
84bafc02 403 PL_rs = newSVpvs_flags("\000", SVs_TEMP);
c07a80fd
PP
404#ifndef DOSISH
405#ifndef CSH
6b88bc9c 406 *SvPVX(PL_rs) = '\n';
a0d0e21e 407#endif /* !CSH */
55497cff 408#endif /* !DOSISH */
c07a80fd 409
a0d0e21e 410 result = do_readline();
d343c3ef 411 LEAVE_with_name("glob");
a0d0e21e
LW
412 return result;
413}
414
a0d0e21e
LW
415PP(pp_rcatline)
416{
146174a9 417 PL_last_in_gv = cGVOP_gv;
a0d0e21e
LW
418 return do_readline();
419}
420
421PP(pp_warn)
422{
20b7effb 423 dSP; dMARK;
c5df3096 424 SV *exsv;
06bf62c7 425 STRLEN len;
b59aed67 426 if (SP - MARK > 1) {
a0d0e21e 427 dTARGET;
3280af22 428 do_join(TARG, &PL_sv_no, MARK, SP);
c5df3096 429 exsv = TARG;
a0d0e21e
LW
430 SP = MARK + 1;
431 }
b59aed67 432 else if (SP == MARK) {
c5df3096 433 exsv = &PL_sv_no;
b59aed67 434 EXTEND(SP, 1);
83f957ec 435 SP = MARK + 1;
b59aed67 436 }
a0d0e21e 437 else {
c5df3096 438 exsv = TOPs;
ef5fe392 439 if (SvGMAGICAL(exsv)) exsv = sv_mortalcopy(exsv);
a0d0e21e 440 }
06bf62c7 441
72d74926 442 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
c5df3096
Z
443 /* well-formed exception supplied */
444 }
c5df3096 445 else {
eed484f9
DD
446 SV * const errsv = ERRSV;
447 SvGETMAGIC(errsv);
448 if (SvROK(errsv)) {
449 if (SvGMAGICAL(errsv)) {
ef5fe392 450 exsv = sv_newmortal();
eed484f9 451 sv_setsv_nomg(exsv, errsv);
ef5fe392 452 }
eed484f9 453 else exsv = errsv;
ef5fe392 454 }
eed484f9 455 else if (SvPOKp(errsv) ? SvCUR(errsv) : SvNIOKp(errsv)) {
ef5fe392 456 exsv = sv_newmortal();
eed484f9 457 sv_setsv_nomg(exsv, errsv);
ef5fe392
FC
458 sv_catpvs(exsv, "\t...caught");
459 }
460 else {
c5df3096 461 exsv = newSVpvs_flags("Warning: something's wrong", SVs_TEMP);
ef5fe392 462 }
c5df3096 463 }
3b7f69a5
FC
464 if (SvROK(exsv) && !PL_warnhook)
465 Perl_warn(aTHX_ "%"SVf, SVfARG(exsv));
466 else warn_sv(exsv);
a0d0e21e
LW
467 RETSETYES;
468}
469
470PP(pp_die)
471{
20b7effb 472 dSP; dMARK;
c5df3096 473 SV *exsv;
06bf62c7 474 STRLEN len;
96e176bf 475#ifdef VMS
97124ef6
FC
476 VMSISH_HUSHED =
477 VMSISH_HUSHED || (PL_curcop->op_private & OPpHUSH_VMSISH);
96e176bf 478#endif
a0d0e21e
LW
479 if (SP - MARK != 1) {
480 dTARGET;
3280af22 481 do_join(TARG, &PL_sv_no, MARK, SP);
c5df3096 482 exsv = TARG;
a0d0e21e
LW
483 SP = MARK + 1;
484 }
485 else {
c5df3096 486 exsv = TOPs;
a0d0e21e 487 }
c5df3096 488
72d74926 489 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
c5df3096
Z
490 /* well-formed exception supplied */
491 }
eed484f9
DD
492 else {
493 SV * const errsv = ERRSV;
8b3945e7 494 SvGETMAGIC(errsv);
eed484f9
DD
495 if (SvROK(errsv)) {
496 exsv = errsv;
497 if (sv_isobject(exsv)) {
498 HV * const stash = SvSTASH(SvRV(exsv));
499 GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
500 if (gv) {
501 SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
502 SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
503 EXTEND(SP, 3);
504 PUSHMARK(SP);
505 PUSHs(exsv);
506 PUSHs(file);
507 PUSHs(line);
508 PUTBACK;
509 call_sv(MUTABLE_SV(GvCV(gv)),
510 G_SCALAR|G_EVAL|G_KEEPERR);
511 exsv = sv_mortalcopy(*PL_stack_sp--);
512 }
05423cc9 513 }
4e6ea2c3 514 }
8b3945e7 515 else if (SvPOK(errsv) && SvCUR(errsv)) {
eed484f9
DD
516 exsv = sv_mortalcopy(errsv);
517 sv_catpvs(exsv, "\t...propagated");
518 }
519 else {
520 exsv = newSVpvs_flags("Died", SVs_TEMP);
521 }
c5df3096 522 }
81d52ecd 523 die_sv(exsv);
a25b5927 524 NOT_REACHED; /* NOTREACHED */
263fdd5b 525 return NULL; /* avoid missing return from non-void function warning */
a0d0e21e
LW
526}
527
528/* I/O. */
529
d682515d 530OP *
3e0cb5de 531Perl_tied_method(pTHX_ SV *methname, SV **sp, SV *const sv,
d682515d 532 const MAGIC *const mg, const U32 flags, U32 argc, ...)
6bcca55b 533{
d8ef3a16
DM
534 SV **orig_sp = sp;
535 I32 ret_args;
052a7c76 536 SSize_t extend_size;
d8ef3a16 537
d682515d 538 PERL_ARGS_ASSERT_TIED_METHOD;
6bcca55b
NC
539
540 /* Ensure that our flag bits do not overlap. */
6d59e610
LM
541 STATIC_ASSERT_STMT((TIED_METHOD_MORTALIZE_NOT_NEEDED & G_WANT) == 0);
542 STATIC_ASSERT_STMT((TIED_METHOD_ARGUMENTS_ON_STACK & G_WANT) == 0);
543 STATIC_ASSERT_STMT((TIED_METHOD_SAY & G_WANT) == 0);
6bcca55b 544
d8ef3a16
DM
545 PUTBACK; /* sp is at *foot* of args, so this pops args from old stack */
546 PUSHSTACKi(PERLSI_MAGIC);
052a7c76 547 /* extend for object + args. If argc might wrap/truncate when cast
e9548aa6
DM
548 * to SSize_t and incremented, set to -1, which will trigger a panic in
549 * EXTEND().
550 * The weird way this is written is because g++ is dumb enough to
551 * warn "comparison is always false" on something like:
552 *
553 * sizeof(a) >= sizeof(b) && a >= B_t_MAX -1
554 *
555 * (where the LH condition is false)
556 */
052a7c76 557 extend_size =
e9548aa6 558 (argc > (sizeof(argc) >= sizeof(SSize_t) ? SSize_t_MAX - 1 : argc))
052a7c76
DM
559 ? -1 : (SSize_t)argc + 1;
560 EXTEND(SP, extend_size);
6bcca55b 561 PUSHMARK(sp);
d682515d 562 PUSHs(SvTIED_obj(sv, mg));
d8ef3a16
DM
563 if (flags & TIED_METHOD_ARGUMENTS_ON_STACK) {
564 Copy(orig_sp + 2, sp + 1, argc, SV*); /* copy args to new stack */
1a8c1d59 565 sp += argc;
d8ef3a16 566 }
1a8c1d59 567 else if (argc) {
d682515d
NC
568 const U32 mortalize_not_needed
569 = flags & TIED_METHOD_MORTALIZE_NOT_NEEDED;
6bcca55b 570 va_list args;
0d5509eb 571 va_start(args, argc);
6bcca55b
NC
572 do {
573 SV *const arg = va_arg(args, SV *);
574 if(mortalize_not_needed)
575 PUSHs(arg);
576 else
577 mPUSHs(arg);
578 } while (--argc);
579 va_end(args);
580 }
581
582 PUTBACK;
d682515d 583 ENTER_with_name("call_tied_method");
94bc412f
NC
584 if (flags & TIED_METHOD_SAY) {
585 /* local $\ = "\n" */
586 SAVEGENERICSV(PL_ors_sv);
587 PL_ors_sv = newSVpvs("\n");
588 }
3e0cb5de 589 ret_args = call_sv(methname, (flags & G_WANT)|G_METHOD_NAMED);
d8ef3a16
DM
590 SPAGAIN;
591 orig_sp = sp;
592 POPSTACK;
593 SPAGAIN;
594 if (ret_args) { /* copy results back to original stack */
595 EXTEND(sp, ret_args);
596 Copy(orig_sp - ret_args + 1, sp + 1, ret_args, SV*);
597 sp += ret_args;
598 PUTBACK;
599 }
d682515d 600 LEAVE_with_name("call_tied_method");
6bcca55b
NC
601 return NORMAL;
602}
603
d682515d
NC
604#define tied_method0(a,b,c,d) \
605 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,0)
606#define tied_method1(a,b,c,d,e) \
607 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,1,e)
608#define tied_method2(a,b,c,d,e,f) \
609 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,2,e,f)
6bcca55b 610
a0d0e21e
LW
611PP(pp_open)
612{
20b7effb 613 dSP;
a567e93b
NIS
614 dMARK; dORIGMARK;
615 dTARGET;
a0d0e21e 616 SV *sv;
5b468f54 617 IO *io;
5c144d81 618 const char *tmps;
a0d0e21e 619 STRLEN len;
a567e93b 620 bool ok;
a0d0e21e 621
159b6efe 622 GV * const gv = MUTABLE_GV(*++MARK);
c4420975 623
13be902c 624 if (!isGV(gv) && !(SvTYPE(gv) == SVt_PVLV && isGV_with_GP(gv)))
cea2e8a9 625 DIE(aTHX_ PL_no_usym, "filehandle");
abc718f2 626
a79db61d 627 if ((io = GvIOp(gv))) {
a5e1d062 628 const MAGIC *mg;
36477c24 629 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
853846ea 630
a2a5de95 631 if (IoDIRP(io))
d1d15184 632 Perl_ck_warner_d(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
d0c0e7dd
FC
633 "Opening dirhandle %"HEKf" also as a file",
634 HEKfARG(GvENAME_HEK(gv)));
abc718f2 635
ad64d0ec 636 mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
c4420975
AL
637 if (mg) {
638 /* Method's args are same as ours ... */
639 /* ... except handle is replaced by the object */
3e0cb5de 640 return Perl_tied_method(aTHX_ SV_CONST(OPEN), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC
641 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
642 sp - mark);
c4420975 643 }
4592e6ca
NIS
644 }
645
a567e93b
NIS
646 if (MARK < SP) {
647 sv = *++MARK;
648 }
649 else {
35a08ec7 650 sv = GvSVn(gv);
a567e93b
NIS
651 }
652
5c144d81 653 tmps = SvPV_const(sv, len);
d5eb9a46 654 ok = do_open6(gv, tmps, len, NULL, MARK+1, (SP-MARK));
a567e93b
NIS
655 SP = ORIGMARK;
656 if (ok)
3280af22
NIS
657 PUSHi( (I32)PL_forkprocess );
658 else if (PL_forkprocess == 0) /* we are a new child */
a0d0e21e
LW
659 PUSHi(0);
660 else
661 RETPUSHUNDEF;
662 RETURN;
663}
664
665PP(pp_close)
666{
20b7effb 667 dSP;
30901a8a
FC
668 GV * const gv =
669 MAXARG == 0 || (!TOPs && !POPs) ? PL_defoutgv : MUTABLE_GV(POPs);
1d603a67 670
2addaaf3
NC
671 if (MAXARG == 0)
672 EXTEND(SP, 1);
673
a79db61d
AL
674 if (gv) {
675 IO * const io = GvIO(gv);
676 if (io) {
a5e1d062 677 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 678 if (mg) {
3e0cb5de 679 return tied_method0(SV_CONST(CLOSE), SP, MUTABLE_SV(io), mg);
a79db61d
AL
680 }
681 }
1d603a67 682 }
54310121 683 PUSHs(boolSV(do_close(gv, TRUE)));
a0d0e21e
LW
684 RETURN;
685}
686
687PP(pp_pipe_op)
688{
a0d0e21e 689#ifdef HAS_PIPE
9cad6237 690 dSP;
eb578fdb
KW
691 IO *rstio;
692 IO *wstio;
a0d0e21e
LW
693 int fd[2];
694
159b6efe
NC
695 GV * const wgv = MUTABLE_GV(POPs);
696 GV * const rgv = MUTABLE_GV(POPs);
a0d0e21e 697
a0d0e21e 698 rstio = GvIOn(rgv);
a0d0e21e
LW
699 if (IoIFP(rstio))
700 do_close(rgv, FALSE);
49225470
DD
701
702 wstio = GvIOn(wgv);
a0d0e21e
LW
703 if (IoIFP(wstio))
704 do_close(wgv, FALSE);
705
6ad3d225 706 if (PerlProc_pipe(fd) < 0)
a0d0e21e
LW
707 goto badexit;
708
460c8493
IZ
709 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
710 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
b5ac89c3 711 IoOFP(rstio) = IoIFP(rstio);
a0d0e21e 712 IoIFP(wstio) = IoOFP(wstio);
50952442
JH
713 IoTYPE(rstio) = IoTYPE_RDONLY;
714 IoTYPE(wstio) = IoTYPE_WRONLY;
a0d0e21e
LW
715
716 if (!IoIFP(rstio) || !IoOFP(wstio)) {
a79db61d
AL
717 if (IoIFP(rstio))
718 PerlIO_close(IoIFP(rstio));
719 else
720 PerlLIO_close(fd[0]);
721 if (IoOFP(wstio))
722 PerlIO_close(IoOFP(wstio));
723 else
724 PerlLIO_close(fd[1]);
a0d0e21e
LW
725 goto badexit;
726 }
131d45a9 727#if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
375ed12a 728 /* ensure close-on-exec */
131d45a9
JH
729 if ((fd[0] > PL_maxsysfd && fcntl(fd[0], F_SETFD, FD_CLOEXEC) < 0) ||
730 (fd[1] > PL_maxsysfd && fcntl(fd[1], F_SETFD, FD_CLOEXEC) < 0))
375ed12a 731 goto badexit;
4771b018 732#endif
a0d0e21e
LW
733 RETPUSHYES;
734
7b52d656 735 badexit:
a0d0e21e
LW
736 RETPUSHUNDEF;
737#else
cea2e8a9 738 DIE(aTHX_ PL_no_func, "pipe");
a0d0e21e
LW
739#endif
740}
741
742PP(pp_fileno)
743{
20b7effb 744 dSP; dTARGET;
a0d0e21e
LW
745 GV *gv;
746 IO *io;
760ac839 747 PerlIO *fp;
a5e1d062 748 const MAGIC *mg;
4592e6ca 749
a0d0e21e
LW
750 if (MAXARG < 1)
751 RETPUSHUNDEF;
159b6efe 752 gv = MUTABLE_GV(POPs);
9c9f25b8 753 io = GvIO(gv);
4592e6ca 754
9c9f25b8 755 if (io
ad64d0ec 756 && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar)))
5b468f54 757 {
3e0cb5de 758 return tied_method0(SV_CONST(FILENO), SP, MUTABLE_SV(io), mg);
4592e6ca
NIS
759 }
760
67f2cc75
AC
761 if (io && IoDIRP(io)) {
762#if defined(HAS_DIRFD) || defined(HAS_DIR_DD_FD)
763 PUSHi(my_dirfd(IoDIRP(io)));
764 RETURN;
765#elif defined(ENOTSUP)
766 errno = ENOTSUP; /* Operation not supported */
767 RETPUSHUNDEF;
768#elif defined(EOPNOTSUPP)
769 errno = EOPNOTSUPP; /* Operation not supported on socket */
770 RETPUSHUNDEF;
771#else
772 errno = EINVAL; /* Invalid argument */
773 RETPUSHUNDEF;
774#endif
775 }
776
9c9f25b8 777 if (!io || !(fp = IoIFP(io))) {
c289d2f7
JH
778 /* Can't do this because people seem to do things like
779 defined(fileno($foo)) to check whether $foo is a valid fh.
51087808
NC
780
781 report_evil_fh(gv);
c289d2f7 782 */
a0d0e21e 783 RETPUSHUNDEF;
c289d2f7
JH
784 }
785
760ac839 786 PUSHi(PerlIO_fileno(fp));
a0d0e21e
LW
787 RETURN;
788}
789
790PP(pp_umask)
791{
27da23d5 792 dSP;
d7e492a4 793#ifdef HAS_UMASK
27da23d5 794 dTARGET;
761237fe 795 Mode_t anum;
a0d0e21e 796
58536d15 797 if (MAXARG < 1 || (!TOPs && !POPs)) {
b0b546b3
GA
798 anum = PerlLIO_umask(022);
799 /* setting it to 022 between the two calls to umask avoids
800 * to have a window where the umask is set to 0 -- meaning
801 * that another thread could create world-writeable files. */
802 if (anum != 022)
803 (void)PerlLIO_umask(anum);
a0d0e21e
LW
804 }
805 else
6ad3d225 806 anum = PerlLIO_umask(POPi);
a0d0e21e
LW
807 TAINT_PROPER("umask");
808 XPUSHi(anum);
809#else
a0288114 810 /* Only DIE if trying to restrict permissions on "user" (self).
eec2d3df
GS
811 * Otherwise it's harmless and more useful to just return undef
812 * since 'group' and 'other' concepts probably don't exist here. */
58536d15 813 if (MAXARG >= 1 && (TOPs||POPs) && (POPi & 0700))
cea2e8a9 814 DIE(aTHX_ "umask not implemented");
6b88bc9c 815 XPUSHs(&PL_sv_undef);
a0d0e21e
LW
816#endif
817 RETURN;
818}
819
820PP(pp_binmode)
821{
20b7effb 822 dSP;
a0d0e21e
LW
823 GV *gv;
824 IO *io;
760ac839 825 PerlIO *fp;
a0714e2c 826 SV *discp = NULL;
a0d0e21e
LW
827
828 if (MAXARG < 1)
829 RETPUSHUNDEF;
60382766 830 if (MAXARG > 1) {
16fe6d59 831 discp = POPs;
60382766 832 }
a0d0e21e 833
159b6efe 834 gv = MUTABLE_GV(POPs);
9c9f25b8 835 io = GvIO(gv);
4592e6ca 836
9c9f25b8 837 if (io) {
a5e1d062 838 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 839 if (mg) {
bc0c81ca
NC
840 /* This takes advantage of the implementation of the varargs
841 function, which I don't think that the optimiser will be able to
842 figure out. Although, as it's a static function, in theory it
843 could. */
3e0cb5de 844 return Perl_tied_method(aTHX_ SV_CONST(BINMODE), SP, MUTABLE_SV(io), mg,
d682515d
NC
845 G_SCALAR|TIED_METHOD_MORTALIZE_NOT_NEEDED,
846 discp ? 1 : 0, discp);
a79db61d 847 }
4592e6ca 848 }
a0d0e21e 849
9c9f25b8 850 if (!io || !(fp = IoIFP(io))) {
51087808 851 report_evil_fh(gv);
b5fe5ca2 852 SETERRNO(EBADF,RMS_IFI);
50f846a7
SC
853 RETPUSHUNDEF;
854 }
a0d0e21e 855
40d98b49 856 PUTBACK;
f0a78170 857 {
a79b25b7
VP
858 STRLEN len = 0;
859 const char *d = NULL;
860 int mode;
861 if (discp)
862 d = SvPV_const(discp, len);
863 mode = mode_from_discipline(d, len);
f0a78170
NC
864 if (PerlIO_binmode(aTHX_ fp, IoTYPE(io), mode, d)) {
865 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
866 if (!PerlIO_binmode(aTHX_ IoOFP(io), IoTYPE(io), mode, d)) {
867 SPAGAIN;
868 RETPUSHUNDEF;
869 }
870 }
871 SPAGAIN;
872 RETPUSHYES;
873 }
874 else {
875 SPAGAIN;
876 RETPUSHUNDEF;
38af81ff 877 }
40d98b49 878 }
a0d0e21e
LW
879}
880
881PP(pp_tie)
882{
20b7effb 883 dSP; dMARK;
a0d0e21e 884 HV* stash;
07822e36 885 GV *gv = NULL;
a0d0e21e 886 SV *sv;
1df70142 887 const I32 markoff = MARK - PL_stack_base;
e1ec3a88 888 const char *methname;
14befaf4 889 int how = PERL_MAGIC_tied;
e336de0d 890 U32 items;
c4420975 891 SV *varsv = *++MARK;
a0d0e21e 892
6b05c17a
NIS
893 switch(SvTYPE(varsv)) {
894 case SVt_PVHV:
aec0c0cc
FC
895 {
896 HE *entry;
6b05c17a 897 methname = "TIEHASH";
aec0c0cc
FC
898 if (HvLAZYDEL(varsv) && (entry = HvEITER((HV *)varsv))) {
899 HvLAZYDEL_off(varsv);
900 hv_free_ent((HV *)varsv, entry);
901 }
85fbaab2 902 HvEITER_set(MUTABLE_HV(varsv), 0);
6b05c17a 903 break;
aec0c0cc 904 }
6b05c17a
NIS
905 case SVt_PVAV:
906 methname = "TIEARRAY";
ce65bc73
FC
907 if (!AvREAL(varsv)) {
908 if (!AvREIFY(varsv))
909 Perl_croak(aTHX_ "Cannot tie unreifiable array");
910 av_clear((AV *)varsv);
911 AvREIFY_off(varsv);
912 AvREAL_on(varsv);
913 }
6b05c17a
NIS
914 break;
915 case SVt_PVGV:
13be902c 916 case SVt_PVLV:
8bb5f786 917 if (isGV_with_GP(varsv) && !SvFAKE(varsv)) {
6e592b3a
BM
918 methname = "TIEHANDLE";
919 how = PERL_MAGIC_tiedscalar;
920 /* For tied filehandles, we apply tiedscalar magic to the IO
921 slot of the GP rather than the GV itself. AMS 20010812 */
922 if (!GvIOp(varsv))
923 GvIOp(varsv) = newIO();
ad64d0ec 924 varsv = MUTABLE_SV(GvIOp(varsv));
6e592b3a
BM
925 break;
926 }
13733cde
FC
927 if (SvTYPE(varsv) == SVt_PVLV && LvTYPE(varsv) == 'y') {
928 vivify_defelem(varsv);
929 varsv = LvTARG(varsv);
930 }
924ba076 931 /* FALLTHROUGH */
6b05c17a
NIS
932 default:
933 methname = "TIESCALAR";
14befaf4 934 how = PERL_MAGIC_tiedscalar;
6b05c17a
NIS
935 break;
936 }
e336de0d 937 items = SP - MARK++;
a91d1d42 938 if (sv_isobject(*MARK)) { /* Calls GET magic. */
d343c3ef 939 ENTER_with_name("call_TIE");
e788e7d3 940 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 941 PUSHMARK(SP);
eb160463 942 EXTEND(SP,(I32)items);
e336de0d
GS
943 while (items--)
944 PUSHs(*MARK++);
945 PUTBACK;
864dbfa3 946 call_method(methname, G_SCALAR);
301e8125 947 }
6b05c17a 948 else {
086d2913
NC
949 /* Can't use call_method here, else this: fileno FOO; tie @a, "FOO"
950 * will attempt to invoke IO::File::TIEARRAY, with (best case) the
951 * wrong error message, and worse case, supreme action at a distance.
952 * (Sorry obfuscation writers. You're not going to be given this one.)
6b05c17a 953 */
4886938f
BF
954 stash = gv_stashsv(*MARK, 0);
955 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
35c1215d 956 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
a91d1d42 957 methname, SVfARG(SvOK(*MARK) ? *MARK : &PL_sv_no));
6b05c17a 958 }
d343c3ef 959 ENTER_with_name("call_TIE");
e788e7d3 960 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 961 PUSHMARK(SP);
eb160463 962 EXTEND(SP,(I32)items);
e336de0d
GS
963 while (items--)
964 PUSHs(*MARK++);
965 PUTBACK;
ad64d0ec 966 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
6b05c17a 967 }
a0d0e21e
LW
968 SPAGAIN;
969
970 sv = TOPs;
d3acc0f7 971 POPSTACK;
a0d0e21e 972 if (sv_isobject(sv)) {
33c27489 973 sv_unmagic(varsv, how);
ae21d580 974 /* Croak if a self-tie on an aggregate is attempted. */
b881518d 975 if (varsv == SvRV(sv) &&
d87ebaca
YST
976 (SvTYPE(varsv) == SVt_PVAV ||
977 SvTYPE(varsv) == SVt_PVHV))
ae21d580
JH
978 Perl_croak(aTHX_
979 "Self-ties of arrays and hashes are not supported");
a0714e2c 980 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
a0d0e21e 981 }
d343c3ef 982 LEAVE_with_name("call_TIE");
3280af22 983 SP = PL_stack_base + markoff;
a0d0e21e
LW
984 PUSHs(sv);
985 RETURN;
986}
987
b1c05ba5
DM
988
989/* also used for: pp_dbmclose() */
990
a0d0e21e
LW
991PP(pp_untie)
992{
20b7effb 993 dSP;
5b468f54 994 MAGIC *mg;
33c27489 995 SV *sv = POPs;
1df70142 996 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 997 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
55497cff 998
ca0d4ed9 999 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
5b468f54
AMS
1000 RETPUSHYES;
1001
13733cde
FC
1002 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y' &&
1003 !(sv = defelem_target(sv, NULL))) RETPUSHUNDEF;
1004
65eba18f 1005 if ((mg = SvTIED_mg(sv, how))) {
1b6737cc 1006 SV * const obj = SvRV(SvTIED_obj(sv, mg));
fa2b88e0 1007 if (obj) {
c4420975 1008 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
0bd48802 1009 CV *cv;
c4420975 1010 if (gv && isGV(gv) && (cv = GvCV(gv))) {
fa2b88e0 1011 PUSHMARK(SP);
c33ef3ac 1012 PUSHs(SvTIED_obj(MUTABLE_SV(gv), mg));
6e449a3a 1013 mXPUSHi(SvREFCNT(obj) - 1);
fa2b88e0 1014 PUTBACK;
d343c3ef 1015 ENTER_with_name("call_UNTIE");
ad64d0ec 1016 call_sv(MUTABLE_SV(cv), G_VOID);
d343c3ef 1017 LEAVE_with_name("call_UNTIE");
fa2b88e0
JS
1018 SPAGAIN;
1019 }
a2a5de95
NC
1020 else if (mg && SvREFCNT(obj) > 1) {
1021 Perl_ck_warner(aTHX_ packWARN(WARN_UNTIE),
1022 "untie attempted while %"UVuf" inner references still exist",
1023 (UV)SvREFCNT(obj) - 1 ) ;
c4420975 1024 }
cbdc8872
PP
1025 }
1026 }
38193a09 1027 sv_unmagic(sv, how) ;
55497cff 1028 RETPUSHYES;
a0d0e21e
LW
1029}
1030
c07a80fd
PP
1031PP(pp_tied)
1032{
39644a26 1033 dSP;
1b6737cc 1034 const MAGIC *mg;
b3cf4821 1035 dTOPss;
1df70142 1036 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 1037 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
5b468f54 1038
4be76e1f 1039 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
b3cf4821 1040 goto ret_undef;
c07a80fd 1041
13733cde 1042 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y' &&
b3cf4821 1043 !(sv = defelem_target(sv, NULL))) goto ret_undef;
13733cde 1044
155aba94 1045 if ((mg = SvTIED_mg(sv, how))) {
b3cf4821
DD
1046 SETs(SvTIED_obj(sv, mg));
1047 return NORMAL; /* PUTBACK not needed, pp_tied never moves SP */
c07a80fd 1048 }
b3cf4821
DD
1049 ret_undef:
1050 SETs(&PL_sv_undef);
1051 return NORMAL;
c07a80fd
PP
1052}
1053
a0d0e21e
LW
1054PP(pp_dbmopen)
1055{
20b7effb 1056 dSP;
a0d0e21e
LW
1057 dPOPPOPssrl;
1058 HV* stash;
07822e36 1059 GV *gv = NULL;
a0d0e21e 1060
85fbaab2 1061 HV * const hv = MUTABLE_HV(POPs);
84bafc02 1062 SV * const sv = newSVpvs_flags("AnyDBM_File", SVs_TEMP);
da51bb9b 1063 stash = gv_stashsv(sv, 0);
8ebc5c01 1064 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
a0d0e21e 1065 PUTBACK;
864dbfa3 1066 require_pv("AnyDBM_File.pm");
a0d0e21e 1067 SPAGAIN;
eff494dd 1068 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH")))
cea2e8a9 1069 DIE(aTHX_ "No dbm on this machine");
a0d0e21e
LW
1070 }
1071
57d3b86d 1072 ENTER;
924508f0 1073 PUSHMARK(SP);
6b05c17a 1074
924508f0 1075 EXTEND(SP, 5);
a0d0e21e
LW
1076 PUSHs(sv);
1077 PUSHs(left);
1078 if (SvIV(right))
6e449a3a 1079 mPUSHu(O_RDWR|O_CREAT);
a0d0e21e 1080 else
480e0d3c 1081 {
6e449a3a 1082 mPUSHu(O_RDWR);
480e0d3c
FC
1083 if (!SvOK(right)) right = &PL_sv_no;
1084 }
a0d0e21e 1085 PUSHs(right);
57d3b86d 1086 PUTBACK;
ad64d0ec 1087 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
a0d0e21e
LW
1088 SPAGAIN;
1089
1090 if (!sv_isobject(TOPs)) {
924508f0
GS
1091 SP--;
1092 PUSHMARK(SP);
a0d0e21e
LW
1093 PUSHs(sv);
1094 PUSHs(left);
6e449a3a 1095 mPUSHu(O_RDONLY);
a0d0e21e 1096 PUSHs(right);
a0d0e21e 1097 PUTBACK;
ad64d0ec 1098 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
a0d0e21e 1099 SPAGAIN;
4b523e79
DD
1100 if (sv_isobject(TOPs))
1101 goto retie;
a0d0e21e 1102 }
4b523e79
DD
1103 else {
1104 retie:
ad64d0ec
NC
1105 sv_unmagic(MUTABLE_SV(hv), PERL_MAGIC_tied);
1106 sv_magic(MUTABLE_SV(hv), TOPs, PERL_MAGIC_tied, NULL, 0);
6b05c17a 1107 }
a0d0e21e
LW
1108 LEAVE;
1109 RETURN;
1110}
1111
a0d0e21e
LW
1112PP(pp_sselect)
1113{
a0d0e21e 1114#ifdef HAS_SELECT
20b7effb 1115 dSP; dTARGET;
eb578fdb
KW
1116 I32 i;
1117 I32 j;
1118 char *s;
1119 SV *sv;
65202027 1120 NV value;
a0d0e21e
LW
1121 I32 maxlen = 0;
1122 I32 nfound;
1123 struct timeval timebuf;
1124 struct timeval *tbuf = &timebuf;
1125 I32 growsize;
1126 char *fd_sets[4];
1127#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1128 I32 masksize;
1129 I32 offset;
1130 I32 k;
1131
1132# if BYTEORDER & 0xf0000
1133# define ORDERBYTE (0x88888888 - BYTEORDER)
1134# else
1135# define ORDERBYTE (0x4444 - BYTEORDER)
1136# endif
1137
1138#endif
1139
1140 SP -= 4;
1141 for (i = 1; i <= 3; i++) {
c4420975 1142 SV * const sv = SP[i];
9d6d5a79 1143 SvGETMAGIC(sv);
15547071
GA
1144 if (!SvOK(sv))
1145 continue;
ba3062ae
FC
1146 if (SvREADONLY(sv)) {
1147 if (!(SvPOK(sv) && SvCUR(sv) == 0))
cb077ed2 1148 Perl_croak_no_modify();
ba3062ae
FC
1149 }
1150 else if (SvIsCOW(sv)) sv_force_normal_flags(sv, 0);
4ef2275c 1151 if (!SvPOK(sv)) {
9d6d5a79
FC
1152 if (!SvPOKp(sv))
1153 Perl_ck_warner(aTHX_ packWARN(WARN_MISC),
1154 "Non-string passed as bitmask");
1155 SvPV_force_nomg_nolen(sv); /* force string conversion */
4ef2275c 1156 }
729c079f 1157 j = SvCUR(sv);
a0d0e21e
LW
1158 if (maxlen < j)
1159 maxlen = j;
1160 }
1161
5ff3f7a4 1162/* little endians can use vecs directly */
e366b469 1163#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
5ff3f7a4 1164# ifdef NFDBITS
a0d0e21e 1165
5ff3f7a4
GS
1166# ifndef NBBY
1167# define NBBY 8
1168# endif
a0d0e21e
LW
1169
1170 masksize = NFDBITS / NBBY;
5ff3f7a4 1171# else
a0d0e21e 1172 masksize = sizeof(long); /* documented int, everyone seems to use long */
5ff3f7a4 1173# endif
a0d0e21e
LW
1174 Zero(&fd_sets[0], 4, char*);
1175#endif
1176
ad517f75
MHM
1177# if SELECT_MIN_BITS == 1
1178 growsize = sizeof(fd_set);
1179# else
1180# if defined(__GLIBC__) && defined(__FD_SETSIZE)
1181# undef SELECT_MIN_BITS
1182# define SELECT_MIN_BITS __FD_SETSIZE
1183# endif
e366b469
PG
1184 /* If SELECT_MIN_BITS is greater than one we most probably will want
1185 * to align the sizes with SELECT_MIN_BITS/8 because for example
1186 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
f05550c0 1187 * UNIX, Solaris, Darwin) the smallest quantum select() operates
e366b469
PG
1188 * on (sets/tests/clears bits) is 32 bits. */
1189 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
e366b469
PG
1190# endif
1191
a0d0e21e 1192 sv = SP[4];
90eaaf02 1193 SvGETMAGIC(sv);
a0d0e21e 1194 if (SvOK(sv)) {
90eaaf02 1195 value = SvNV_nomg(sv);
a0d0e21e
LW
1196 if (value < 0.0)
1197 value = 0.0;
1198 timebuf.tv_sec = (long)value;
65202027 1199 value -= (NV)timebuf.tv_sec;
a0d0e21e
LW
1200 timebuf.tv_usec = (long)(value * 1000000.0);
1201 }
1202 else
4608196e 1203 tbuf = NULL;
a0d0e21e
LW
1204
1205 for (i = 1; i <= 3; i++) {
1206 sv = SP[i];
15547071 1207 if (!SvOK(sv) || SvCUR(sv) == 0) {
a0d0e21e
LW
1208 fd_sets[i] = 0;
1209 continue;
1210 }
4ef2275c 1211 assert(SvPOK(sv));
a0d0e21e
LW
1212 j = SvLEN(sv);
1213 if (j < growsize) {
1214 Sv_Grow(sv, growsize);
a0d0e21e 1215 }
c07a80fd
PP
1216 j = SvCUR(sv);
1217 s = SvPVX(sv) + j;
1218 while (++j <= growsize) {
1219 *s++ = '\0';
1220 }
1221
a0d0e21e
LW
1222#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1223 s = SvPVX(sv);
a02a5408 1224 Newx(fd_sets[i], growsize, char);
a0d0e21e
LW
1225 for (offset = 0; offset < growsize; offset += masksize) {
1226 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1227 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1228 }
1229#else
1230 fd_sets[i] = SvPVX(sv);
1231#endif
1232 }
1233
dc4c69d9
JH
1234#ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1235 /* Can't make just the (void*) conditional because that would be
1236 * cpp #if within cpp macro, and not all compilers like that. */
1237 nfound = PerlSock_select(
1238 maxlen * 8,
1239 (Select_fd_set_t) fd_sets[1],
1240 (Select_fd_set_t) fd_sets[2],
1241 (Select_fd_set_t) fd_sets[3],
1242 (void*) tbuf); /* Workaround for compiler bug. */
1243#else
6ad3d225 1244 nfound = PerlSock_select(
a0d0e21e
LW
1245 maxlen * 8,
1246 (Select_fd_set_t) fd_sets[1],
1247 (Select_fd_set_t) fd_sets[2],
1248 (Select_fd_set_t) fd_sets[3],
1249 tbuf);
dc4c69d9 1250#endif
a0d0e21e
LW
1251 for (i = 1; i <= 3; i++) {
1252 if (fd_sets[i]) {
1253 sv = SP[i];
1254#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1255 s = SvPVX(sv);
1256 for (offset = 0; offset < growsize; offset += masksize) {
1257 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1258 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1259 }
1260 Safefree(fd_sets[i]);
1261#endif
1262 SvSETMAGIC(sv);
1263 }
1264 }
1265
4189264e 1266 PUSHi(nfound);
82334630 1267 if (GIMME_V == G_ARRAY && tbuf) {
65202027
DS
1268 value = (NV)(timebuf.tv_sec) +
1269 (NV)(timebuf.tv_usec) / 1000000.0;
6e449a3a 1270 mPUSHn(value);
a0d0e21e
LW
1271 }
1272 RETURN;
1273#else
cea2e8a9 1274 DIE(aTHX_ "select not implemented");
a0d0e21e
LW
1275#endif
1276}
1277
8226a3d7 1278/*
dcccc8ff
KW
1279
1280=head1 GV Functions
1281
8226a3d7
NC
1282=for apidoc setdefout
1283
796b6530
KW
1284Sets C<PL_defoutgv>, the default file handle for output, to the passed in
1285typeglob. As C<PL_defoutgv> "owns" a reference on its typeglob, the reference
8226a3d7 1286count of the passed in typeglob is increased by one, and the reference count
796b6530 1287of the typeglob that C<PL_defoutgv> points to is decreased by one.
8226a3d7
NC
1288
1289=cut
1290*/
1291
4633a7c4 1292void
864dbfa3 1293Perl_setdefout(pTHX_ GV *gv)
4633a7c4 1294{
9a9bb270
FC
1295 PERL_ARGS_ASSERT_SETDEFOUT;
1296 SvREFCNT_inc_simple_void_NN(gv);
ef8d46e8 1297 SvREFCNT_dec(PL_defoutgv);
3280af22 1298 PL_defoutgv = gv;
4633a7c4
LW
1299}
1300
a0d0e21e
LW
1301PP(pp_select)
1302{
20b7effb 1303 dSP; dTARGET;
4633a7c4 1304 HV *hv;
159b6efe 1305 GV * const newdefout = (PL_op->op_private > 0) ? (MUTABLE_GV(POPs)) : NULL;
099be4f1 1306 GV * egv = GvEGVx(PL_defoutgv);
0df2568b 1307 GV * const *gvp;
4633a7c4 1308
4633a7c4 1309 if (!egv)
3280af22 1310 egv = PL_defoutgv;
099be4f1 1311 hv = isGV_with_GP(egv) ? GvSTASH(egv) : NULL;
0df2568b 1312 gvp = hv && HvENAME(hv)
204263bc
FC
1313 ? (GV**)hv_fetch(hv, GvNAME(egv), HEK_UTF8(GvNAME_HEK(egv)) ? -GvNAMELEN(egv) : GvNAMELEN(egv), FALSE)
1314 : NULL;
0df2568b 1315 if (gvp && *gvp == egv) {
bd61b366 1316 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
f86702cc 1317 XPUSHTARG;
0df2568b
FC
1318 }
1319 else {
ad64d0ec 1320 mXPUSHs(newRV(MUTABLE_SV(egv)));
4633a7c4
LW
1321 }
1322
1323 if (newdefout) {
ded8aa31
GS
1324 if (!GvIO(newdefout))
1325 gv_IOadd(newdefout);
4633a7c4
LW
1326 setdefout(newdefout);
1327 }
1328
a0d0e21e
LW
1329 RETURN;
1330}
1331
1332PP(pp_getc)
1333{
20b7effb 1334 dSP; dTARGET;
30901a8a
FC
1335 GV * const gv =
1336 MAXARG==0 || (!TOPs && !POPs) ? PL_stdingv : MUTABLE_GV(POPs);
9c9f25b8 1337 IO *const io = GvIO(gv);
2ae324a7 1338
ac3697cd
NC
1339 if (MAXARG == 0)
1340 EXTEND(SP, 1);
1341
9c9f25b8 1342 if (io) {
a5e1d062 1343 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1344 if (mg) {
0240605e 1345 const U32 gimme = GIMME_V;
3e0cb5de 1346 Perl_tied_method(aTHX_ SV_CONST(GETC), SP, MUTABLE_SV(io), mg, gimme, 0);
0240605e
NC
1347 if (gimme == G_SCALAR) {
1348 SPAGAIN;
a79db61d 1349 SvSetMagicSV_nosteal(TARG, TOPs);
0240605e
NC
1350 }
1351 return NORMAL;
a79db61d 1352 }
2ae324a7 1353 }
90133b69 1354 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
51087808 1355 if (!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
831e4cc3 1356 report_evil_fh(gv);
b5fe5ca2 1357 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1358 RETPUSHUNDEF;
90133b69 1359 }
bbce6d69 1360 TAINT;
76f68e9b 1361 sv_setpvs(TARG, " ");
9bc64814 1362 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
7d59b7e4
NIS
1363 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1364 /* Find out how many bytes the char needs */
aa07b2f6 1365 Size_t len = UTF8SKIP(SvPVX_const(TARG));
7d59b7e4
NIS
1366 if (len > 1) {
1367 SvGROW(TARG,len+1);
1368 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1369 SvCUR_set(TARG,1+len);
1370 }
1371 SvUTF8_on(TARG);
1372 }
88c34251 1373 else SvUTF8_off(TARG);
a0d0e21e
LW
1374 PUSHTARG;
1375 RETURN;
1376}
1377
76e3520e 1378STATIC OP *
cea2e8a9 1379S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
a0d0e21e 1380{
eb578fdb 1381 PERL_CONTEXT *cx;
f54cb97a 1382 const I32 gimme = GIMME_V;
a0d0e21e 1383
7918f24d
NC
1384 PERL_ARGS_ASSERT_DOFORM;
1385
535e48ea 1386 if (CvCLONE(cv))
7b190374
NC
1387 cv = MUTABLE_CV(sv_2mortal(MUTABLE_SV(cv_clone(cv))));
1388
146174a9 1389 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
10067d9a 1390 PUSHFORMAT(cx, retop);
f32c7e86
FC
1391 if (CvDEPTH(cv) >= 2) {
1392 PERL_STACK_OVERFLOW_CHECK();
1393 pad_push(CvPADLIST(cv), CvDEPTH(cv));
1394 }
f32c7e86 1395 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), CvDEPTH(cv));
a0d0e21e 1396
4633a7c4 1397 setdefout(gv); /* locally select filehandle so $% et al work */
a0d0e21e
LW
1398 return CvSTART(cv);
1399}
1400
1401PP(pp_enterwrite)
1402{
39644a26 1403 dSP;
eb578fdb
KW
1404 GV *gv;
1405 IO *io;
a0d0e21e 1406 GV *fgv;
07822e36
JH
1407 CV *cv = NULL;
1408 SV *tmpsv = NULL;
a0d0e21e 1409
2addaaf3 1410 if (MAXARG == 0) {
2addaaf3 1411 EXTEND(SP, 1);
49225470 1412 gv = PL_defoutgv;
2addaaf3 1413 }
a0d0e21e 1414 else {
159b6efe 1415 gv = MUTABLE_GV(POPs);
a0d0e21e 1416 if (!gv)
3280af22 1417 gv = PL_defoutgv;
a0d0e21e 1418 }
a0d0e21e
LW
1419 io = GvIO(gv);
1420 if (!io) {
1421 RETPUSHNO;
1422 }
1423 if (IoFMT_GV(io))
1424 fgv = IoFMT_GV(io);
1425 else
1426 fgv = gv;
1427
2d1ebc9b 1428 assert(fgv);
a79db61d 1429
a0d0e21e 1430 cv = GvFORM(fgv);
a0d0e21e 1431 if (!cv) {
10edeb5d 1432 tmpsv = sv_newmortal();
f4a7049d 1433 gv_efullname4(tmpsv, fgv, NULL, FALSE);
2d1ebc9b 1434 DIE(aTHX_ "Undefined format \"%"SVf"\" called", SVfARG(tmpsv));
a0d0e21e 1435 }
44a8e56a 1436 IoFLAGS(io) &= ~IOf_DIDTOP;
8e4ecf23 1437 RETURNOP(doform(cv,gv,PL_op->op_next));
a0d0e21e
LW
1438}
1439
1440PP(pp_leavewrite)
1441{
20b7effb 1442 dSP;
f9c764c5 1443 GV * const gv = cxstack[cxstack_ix].blk_format.gv;
eb578fdb 1444 IO * const io = GvIOp(gv);
8b8cacda 1445 PerlIO *ofp;
760ac839 1446 PerlIO *fp;
eb578fdb 1447 PERL_CONTEXT *cx;
8f89e5a9 1448 OP *retop;
617a4f41 1449 bool is_return = cBOOL(PL_op->op_type == OP_RETURN);
a0d0e21e 1450
617a4f41 1451 if (is_return || !io || !(ofp = IoOFP(io)))
8b8cacda 1452 goto forget_top;
1453
760ac839 1454 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1455 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
8b8cacda 1456
3280af22
NIS
1457 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1458 PL_formtarget != PL_toptarget)
a0d0e21e 1459 {
4633a7c4
LW
1460 GV *fgv;
1461 CV *cv;
a0d0e21e
LW
1462 if (!IoTOP_GV(io)) {
1463 GV *topgv;
a0d0e21e
LW
1464
1465 if (!IoTOP_NAME(io)) {
1b6737cc 1466 SV *topname;
a0d0e21e
LW
1467 if (!IoFMT_NAME(io))
1468 IoFMT_NAME(io) = savepv(GvNAME(gv));
d0c0e7dd
FC
1469 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%"HEKf"_TOP",
1470 HEKfARG(GvNAME_HEK(gv))));
f776e3cd 1471 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
748a9306 1472 if ((topgv && GvFORM(topgv)) ||
fafc274c 1473 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
2e0de35c 1474 IoTOP_NAME(io) = savesvpv(topname);
a0d0e21e 1475 else
89529cee 1476 IoTOP_NAME(io) = savepvs("top");
a0d0e21e 1477 }
f776e3cd 1478 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
a0d0e21e 1479 if (!topgv || !GvFORM(topgv)) {
b929a54b 1480 IoLINES_LEFT(io) = IoPAGE_LEN(io);
a0d0e21e
LW
1481 goto forget_top;
1482 }
1483 IoTOP_GV(io) = topgv;
1484 }
748a9306
LW
1485 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1486 I32 lines = IoLINES_LEFT(io);
504618e9 1487 const char *s = SvPVX_const(PL_formtarget);
8e07c86e
AD
1488 if (lines <= 0) /* Yow, header didn't even fit!!! */
1489 goto forget_top;
748a9306
LW
1490 while (lines-- > 0) {
1491 s = strchr(s, '\n');
1492 if (!s)
1493 break;
1494 s++;
1495 }
1496 if (s) {
f54cb97a 1497 const STRLEN save = SvCUR(PL_formtarget);
aa07b2f6 1498 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
d75029d0
NIS
1499 do_print(PL_formtarget, ofp);
1500 SvCUR_set(PL_formtarget, save);
3280af22
NIS
1501 sv_chop(PL_formtarget, s);
1502 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW
1503 }
1504 }
a0d0e21e 1505 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
f6dfc736 1506 do_print(GvSV(gv_fetchpvs("\f", GV_ADD, SVt_PV)), ofp);
a0d0e21e
LW
1507 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1508 IoPAGE(io)++;
3280af22 1509 PL_formtarget = PL_toptarget;
748a9306 1510 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4 1511 fgv = IoTOP_GV(io);
636013b3 1512 assert(fgv); /* IoTOP_GV(io) should have been set above */
4633a7c4 1513 cv = GvFORM(fgv);
1df70142
AL
1514 if (!cv) {
1515 SV * const sv = sv_newmortal();
bd61b366 1516 gv_efullname4(sv, fgv, NULL, FALSE);
44b7e78a 1517 DIE(aTHX_ "Undefined top format \"%"SVf"\" called", SVfARG(sv));
4633a7c4 1518 }
43cd5cb7 1519 return doform(cv, gv, PL_op);
a0d0e21e
LW
1520 }
1521
1522 forget_top:
4df352a8
DM
1523 cx = &cxstack[cxstack_ix];
1524 assert(CxTYPE(cx) == CXt_FORMAT);
1525 SP = PL_stack_base + cx->blk_oldsp; /* ignore retval of formline */
2f450c1b 1526 CX_LEAVE_SCOPE(cx);
4df352a8 1527 POPFORMAT(cx);
dd748f45 1528 POPBLOCK(cx);
8f89e5a9 1529 retop = cx->blk_sub.retop;
5da525e9 1530 CX_POP(cx);
a0d0e21e 1531
617a4f41
DM
1532 if (is_return)
1533 /* XXX the semantics of doing 'return' in a format aren't documented.
1534 * Currently we ignore any args to 'return' and just return
1535 * a single undef in both scalar and list contexts
1536 */
1537 PUSHs(&PL_sv_undef);
1538 else if (!io || !(fp = IoOFP(io))) {
c782dc1d 1539 if (io && IoIFP(io))
7716c5c5 1540 report_wrongway_fh(gv, '<');
c521cf7c 1541 else
7716c5c5 1542 report_evil_fh(gv);
3280af22 1543 PUSHs(&PL_sv_no);
a0d0e21e
LW
1544 }
1545 else {
3280af22 1546 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
a2a5de95 1547 Perl_ck_warner(aTHX_ packWARN(WARN_IO), "page overflow");
a0d0e21e 1548 }
d75029d0 1549 if (!do_print(PL_formtarget, fp))
3280af22 1550 PUSHs(&PL_sv_no);
a0d0e21e 1551 else {
3280af22
NIS
1552 FmLINES(PL_formtarget) = 0;
1553 SvCUR_set(PL_formtarget, 0);
1554 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1555 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1556 (void)PerlIO_flush(fp);
3280af22 1557 PUSHs(&PL_sv_yes);
a0d0e21e
LW
1558 }
1559 }
3280af22 1560 PL_formtarget = PL_bodytarget;
8e4ecf23 1561 RETURNOP(retop);
a0d0e21e
LW
1562}
1563
1564PP(pp_prtf)
1565{
20b7effb 1566 dSP; dMARK; dORIGMARK;
760ac839 1567 PerlIO *fp;
a0d0e21e 1568
159b6efe
NC
1569 GV * const gv
1570 = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv;
9c9f25b8 1571 IO *const io = GvIO(gv);
46fc3d4c 1572
87385d72
FC
1573 /* Treat empty list as "" */
1574 if (MARK == SP) XPUSHs(&PL_sv_no);
1575
9c9f25b8 1576 if (io) {
a5e1d062 1577 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d
AL
1578 if (mg) {
1579 if (MARK == ORIGMARK) {
1580 MEXTEND(SP, 1);
1581 ++MARK;
1582 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1583 ++SP;
1584 }
3e0cb5de 1585 return Perl_tied_method(aTHX_ SV_CONST(PRINTF), mark - 1, MUTABLE_SV(io),
d682515d
NC
1586 mg,
1587 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1588 sp - mark);
a79db61d 1589 }
46fc3d4c
PP
1590 }
1591
9c9f25b8 1592 if (!io) {
51087808 1593 report_evil_fh(gv);
93189314 1594 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW
1595 goto just_say_no;
1596 }
1597 else if (!(fp = IoOFP(io))) {
7716c5c5
NC
1598 if (IoIFP(io))
1599 report_wrongway_fh(gv, '<');
1600 else if (ckWARN(WARN_CLOSED))
1601 report_evil_fh(gv);
93189314 1602 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
a0d0e21e
LW
1603 goto just_say_no;
1604 }
1605 else {
c7bd8b84 1606 SV *sv = sv_newmortal();
a0d0e21e
LW
1607 do_sprintf(sv, SP - MARK, MARK + 1);
1608 if (!do_print(sv, fp))
1609 goto just_say_no;
1610
1611 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1612 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW
1613 goto just_say_no;
1614 }
a0d0e21e 1615 SP = ORIGMARK;
3280af22 1616 PUSHs(&PL_sv_yes);
a0d0e21e
LW
1617 RETURN;
1618
1619 just_say_no:
a0d0e21e 1620 SP = ORIGMARK;
3280af22 1621 PUSHs(&PL_sv_undef);
a0d0e21e
LW
1622 RETURN;
1623}
1624
c07a80fd
PP
1625PP(pp_sysopen)
1626{
39644a26 1627 dSP;
de5e49e1 1628 const int perm = (MAXARG > 3 && (TOPs || POPs)) ? POPi : 0666;
1df70142 1629 const int mode = POPi;
1b6737cc 1630 SV * const sv = POPs;
159b6efe 1631 GV * const gv = MUTABLE_GV(POPs);
1b6737cc 1632 STRLEN len;
c07a80fd 1633
4592e6ca 1634 /* Need TIEHANDLE method ? */
1b6737cc 1635 const char * const tmps = SvPV_const(sv, len);
d5eb9a46 1636 if (do_open_raw(gv, tmps, len, mode, perm)) {
c07a80fd 1637 IoLINES(GvIOp(gv)) = 0;
3280af22 1638 PUSHs(&PL_sv_yes);
c07a80fd
PP
1639 }
1640 else {
3280af22 1641 PUSHs(&PL_sv_undef);
c07a80fd
PP
1642 }
1643 RETURN;
1644}
1645
b1c05ba5
DM
1646
1647/* also used for: pp_read() and pp_recv() (where supported) */
1648
a0d0e21e
LW
1649PP(pp_sysread)
1650{
20b7effb 1651 dSP; dMARK; dORIGMARK; dTARGET;
0b423688 1652 SSize_t offset;
a0d0e21e
LW
1653 IO *io;
1654 char *buffer;
0b423688 1655 STRLEN orig_size;
5b54f415 1656 SSize_t length;
eb5c063a 1657 SSize_t count;
748a9306 1658 SV *bufsv;
a0d0e21e 1659 STRLEN blen;
eb5c063a 1660 int fp_utf8;
1dd30107
NC
1661 int buffer_utf8;
1662 SV *read_target;
eb5c063a
NIS
1663 Size_t got = 0;
1664 Size_t wanted;
1d636c13 1665 bool charstart = FALSE;
87330c3c
JH
1666 STRLEN charskip = 0;
1667 STRLEN skip = 0;
159b6efe 1668 GV * const gv = MUTABLE_GV(*++MARK);
375ed12a
JH
1669 int fd;
1670
5b468f54 1671 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1b6737cc 1672 && gv && (io = GvIO(gv)) )
137443ea 1673 {
a5e1d062 1674 const MAGIC *const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1b6737cc 1675 if (mg) {
3e0cb5de 1676 return Perl_tied_method(aTHX_ SV_CONST(READ), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC
1677 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1678 sp - mark);
1b6737cc 1679 }
2ae324a7
PP
1680 }
1681
a0d0e21e
LW
1682 if (!gv)
1683 goto say_undef;
748a9306 1684 bufsv = *++MARK;
ff68c719 1685 if (! SvOK(bufsv))
76f68e9b 1686 sv_setpvs(bufsv, "");
a0d0e21e 1687 length = SvIVx(*++MARK);
4bac9ae4
CS
1688 if (length < 0)
1689 DIE(aTHX_ "Negative length");
748a9306 1690 SETERRNO(0,0);
a0d0e21e
LW
1691 if (MARK < SP)
1692 offset = SvIVx(*++MARK);
1693 else
1694 offset = 0;
1695 io = GvIO(gv);
b5fe5ca2 1696 if (!io || !IoIFP(io)) {
51087808 1697 report_evil_fh(gv);
b5fe5ca2 1698 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1699 goto say_undef;
b5fe5ca2 1700 }
375ed12a
JH
1701
1702 /* Note that fd can here validly be -1, don't check it yet. */
1703 fd = PerlIO_fileno(IoIFP(io));
1704
0064a8a9 1705 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
fb10a8a7
TC
1706 if (PL_op->op_type == OP_SYSREAD || PL_op->op_type == OP_RECV) {
1707 Perl_ck_warner(aTHX_ packWARN(WARN_DEPRECATED),
1708 "%s() is deprecated on :utf8 handles",
1709 OP_DESC(PL_op));
1710 }
7d59b7e4 1711 buffer = SvPVutf8_force(bufsv, blen);
1e54db1a 1712 /* UTF-8 may not have been set if they are all low bytes */
eb5c063a 1713 SvUTF8_on(bufsv);
9b9d7ce8 1714 buffer_utf8 = 0;
7d59b7e4
NIS
1715 }
1716 else {
1717 buffer = SvPV_force(bufsv, blen);
1dd30107 1718 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
7d59b7e4 1719 }
4bac9ae4 1720 if (DO_UTF8(bufsv)) {
3f914778 1721 blen = sv_len_utf8_nomg(bufsv);
4bac9ae4 1722 }
7d59b7e4 1723
d0965105
JH
1724 charstart = TRUE;
1725 charskip = 0;
87330c3c 1726 skip = 0;
4bac9ae4 1727 wanted = length;
d0965105 1728
a0d0e21e 1729#ifdef HAS_SOCKET
533c011a 1730 if (PL_op->op_type == OP_RECV) {
0b423688 1731 Sock_size_t bufsize;
46fc3d4c 1732 char namebuf[MAXPATHLEN];
375ed12a
JH
1733 if (fd < 0) {
1734 SETERRNO(EBADF,SS_IVCHAN);
1735 RETPUSHUNDEF;
1736 }
b5afd346 1737#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
490ab354
JH
1738 bufsize = sizeof (struct sockaddr_in);
1739#else
46fc3d4c 1740 bufsize = sizeof namebuf;
490ab354 1741#endif
abf95952
IZ
1742#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1743 if (bufsize >= 256)
1744 bufsize = 255;
1745#endif
eb160463 1746 buffer = SvGROW(bufsv, (STRLEN)(length+1));
bbce6d69 1747 /* 'offset' means 'flags' here */
375ed12a 1748 count = PerlSock_recvfrom(fd, buffer, length, offset,
10edeb5d 1749 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1750 if (count < 0)
a0d0e21e 1751 RETPUSHUNDEF;
8eb023a9
DM
1752 /* MSG_TRUNC can give oversized count; quietly lose it */
1753 if (count > length)
1754 count = length;
eb5c063a 1755 SvCUR_set(bufsv, count);
748a9306
LW
1756 *SvEND(bufsv) = '\0';
1757 (void)SvPOK_only(bufsv);
eb5c063a
NIS
1758 if (fp_utf8)
1759 SvUTF8_on(bufsv);
748a9306 1760 SvSETMAGIC(bufsv);
aac0dd9a 1761 /* This should not be marked tainted if the fp is marked clean */
bbce6d69
PP
1762 if (!(IoFLAGS(io) & IOf_UNTAINT))
1763 SvTAINTED_on(bufsv);
a0d0e21e 1764 SP = ORIGMARK;
e122534c
TC
1765#if defined(__CYGWIN__)
1766 /* recvfrom() on cygwin doesn't set bufsize at all for
1767 connected sockets, leaving us with trash in the returned
1768 name, so use the same test as the Win32 code to check if it
1769 wasn't set, and set it [perl #118843] */
1770 if (bufsize == sizeof namebuf)
1771 bufsize = 0;
1772#endif
46fc3d4c 1773 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW
1774 PUSHs(TARG);
1775 RETURN;
1776 }
a0d0e21e 1777#endif
bbce6d69 1778 if (offset < 0) {
0b423688 1779 if (-offset > (SSize_t)blen)
cea2e8a9 1780 DIE(aTHX_ "Offset outside string");
bbce6d69
PP
1781 offset += blen;
1782 }
eb5c063a
NIS
1783 if (DO_UTF8(bufsv)) {
1784 /* convert offset-as-chars to offset-as-bytes */
d5f981bb 1785 if (offset >= (SSize_t)blen)
6960c29a
CH
1786 offset += SvCUR(bufsv) - blen;
1787 else
1788 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
eb5c063a 1789 }
375ed12a 1790
eb5c063a 1791 more_bytes:
375ed12a
JH
1792 /* Reestablish the fd in case it shifted from underneath us. */
1793 fd = PerlIO_fileno(IoIFP(io));
1794
0b423688 1795 orig_size = SvCUR(bufsv);
1dd30107
NC
1796 /* Allocating length + offset + 1 isn't perfect in the case of reading
1797 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1798 unduly.
1799 (should be 2 * length + offset + 1, or possibly something longer if
47e13f24 1800 IN_ENCODING Is true) */
eb160463 1801 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
0b423688
TC
1802 if (offset > 0 && offset > (SSize_t)orig_size) { /* Zero any newly allocated space */
1803 Zero(buffer+orig_size, offset-orig_size, char);
cd52b7b2 1804 }
eb5c063a 1805 buffer = buffer + offset;
1dd30107
NC
1806 if (!buffer_utf8) {
1807 read_target = bufsv;
1808 } else {
1809 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1810 concatenate it to the current buffer. */
1811
1812 /* Truncate the existing buffer to the start of where we will be
1813 reading to: */
1814 SvCUR_set(bufsv, offset);
1815
1816 read_target = sv_newmortal();
862a34c6 1817 SvUPGRADE(read_target, SVt_PV);
fe2774ed 1818 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1dd30107 1819 }
eb5c063a 1820
533c011a 1821 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1822#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1823 if (IoTYPE(io) == IoTYPE_SOCKET) {
375ed12a
JH
1824 if (fd < 0) {
1825 SETERRNO(EBADF,SS_IVCHAN);
1826 count = -1;
1827 }
1828 else
1829 count = PerlSock_recv(fd, buffer, length, 0);
a7092146
GS
1830 }
1831 else
1832#endif
1833 {
375ed12a
JH
1834 if (fd < 0) {
1835 SETERRNO(EBADF,RMS_IFI);
1836 count = -1;
1837 }
1838 else
1839 count = PerlLIO_read(fd, buffer, length);
a7092146 1840 }
a0d0e21e
LW
1841 }
1842 else
3b02c43c 1843 {
eb5c063a
NIS
1844 count = PerlIO_read(IoIFP(io), buffer, length);
1845 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1846 if (count == 0 && PerlIO_error(IoIFP(io)))
1847 count = -1;
3b02c43c 1848 }
eb5c063a 1849 if (count < 0) {
7716c5c5 1850 if (IoTYPE(io) == IoTYPE_WRONLY)
a5390457 1851 report_wrongway_fh(gv, '>');
a0d0e21e 1852 goto say_undef;
af8c498a 1853 }
aa07b2f6 1854 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1dd30107
NC
1855 *SvEND(read_target) = '\0';
1856 (void)SvPOK_only(read_target);
0064a8a9 1857 if (fp_utf8 && !IN_BYTES) {
eb5c063a 1858 /* Look at utf8 we got back and count the characters */
1df70142 1859 const char *bend = buffer + count;
eb5c063a 1860 while (buffer < bend) {
d0965105
JH
1861 if (charstart) {
1862 skip = UTF8SKIP(buffer);
1863 charskip = 0;
1864 }
1865 if (buffer - charskip + skip > bend) {
eb5c063a
NIS
1866 /* partial character - try for rest of it */
1867 length = skip - (bend-buffer);
aa07b2f6 1868 offset = bend - SvPVX_const(bufsv);
d0965105
JH
1869 charstart = FALSE;
1870 charskip += count;
eb5c063a
NIS
1871 goto more_bytes;
1872 }
1873 else {
1874 got++;
1875 buffer += skip;
d0965105
JH
1876 charstart = TRUE;
1877 charskip = 0;
eb5c063a
NIS
1878 }
1879 }
1880 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1881 provided amount read (count) was what was requested (length)
1882 */
1883 if (got < wanted && count == length) {
d0965105 1884 length = wanted - got;
aa07b2f6 1885 offset = bend - SvPVX_const(bufsv);
eb5c063a
NIS
1886 goto more_bytes;
1887 }
1888 /* return value is character count */
1889 count = got;
1890 SvUTF8_on(bufsv);
1891 }
1dd30107
NC
1892 else if (buffer_utf8) {
1893 /* Let svcatsv upgrade the bytes we read in to utf8.
1894 The buffer is a mortal so will be freed soon. */
1895 sv_catsv_nomg(bufsv, read_target);
1896 }
748a9306 1897 SvSETMAGIC(bufsv);
aac0dd9a 1898 /* This should not be marked tainted if the fp is marked clean */
bbce6d69
PP
1899 if (!(IoFLAGS(io) & IOf_UNTAINT))
1900 SvTAINTED_on(bufsv);
a0d0e21e 1901 SP = ORIGMARK;
eb5c063a 1902 PUSHi(count);
a0d0e21e
LW
1903 RETURN;
1904
1905 say_undef:
1906 SP = ORIGMARK;
1907 RETPUSHUNDEF;
1908}
1909
b1c05ba5
DM
1910
1911/* also used for: pp_send() where defined */
1912
60504e18 1913PP(pp_syswrite)
a0d0e21e 1914{
20b7effb 1915 dSP; dMARK; dORIGMARK; dTARGET;
748a9306 1916 SV *bufsv;
83003860 1917 const char *buffer;
8c99d73e 1918 SSize_t retval;
a0d0e21e 1919 STRLEN blen;
c9cb0f41 1920 STRLEN orig_blen_bytes;
64a1bc8e 1921 const int op_type = PL_op->op_type;
c9cb0f41
NC
1922 bool doing_utf8;
1923 U8 *tmpbuf = NULL;
159b6efe 1924 GV *const gv = MUTABLE_GV(*++MARK);
91472ad4 1925 IO *const io = GvIO(gv);
375ed12a 1926 int fd;
91472ad4
NC
1927
1928 if (op_type == OP_SYSWRITE && io) {
a5e1d062 1929 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1930 if (mg) {
a79db61d 1931 if (MARK == SP - 1) {
c8834ab7
TC
1932 SV *sv = *SP;
1933 mXPUSHi(sv_len(sv));
a79db61d
AL
1934 PUTBACK;
1935 }
1936
3e0cb5de 1937 return Perl_tied_method(aTHX_ SV_CONST(WRITE), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC
1938 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1939 sp - mark);
64a1bc8e 1940 }
1d603a67 1941 }
a0d0e21e
LW
1942 if (!gv)
1943 goto say_undef;
64a1bc8e 1944
748a9306 1945 bufsv = *++MARK;
64a1bc8e 1946
748a9306 1947 SETERRNO(0,0);
cf167416 1948 if (!io || !IoIFP(io) || IoTYPE(io) == IoTYPE_RDONLY) {
8c99d73e 1949 retval = -1;
51087808
NC
1950 if (io && IoIFP(io))
1951 report_wrongway_fh(gv, '<');
1952 else
1953 report_evil_fh(gv);
b5fe5ca2 1954 SETERRNO(EBADF,RMS_IFI);
7d59b7e4
NIS
1955 goto say_undef;
1956 }
375ed12a
JH
1957 fd = PerlIO_fileno(IoIFP(io));
1958 if (fd < 0) {
1959 SETERRNO(EBADF,SS_IVCHAN);
1960 retval = -1;
1961 goto say_undef;
1962 }
7d59b7e4 1963
c9cb0f41
NC
1964 /* Do this first to trigger any overloading. */
1965 buffer = SvPV_const(bufsv, blen);
1966 orig_blen_bytes = blen;
1967 doing_utf8 = DO_UTF8(bufsv);
1968
7d59b7e4 1969 if (PerlIO_isutf8(IoIFP(io))) {
fb10a8a7
TC
1970 Perl_ck_warner(aTHX_ packWARN(WARN_DEPRECATED),
1971 "%s() is deprecated on :utf8 handles",
1972 OP_DESC(PL_op));
6aa2f6a7 1973 if (!SvUTF8(bufsv)) {
c9cb0f41
NC
1974 /* We don't modify the original scalar. */
1975 tmpbuf = bytes_to_utf8((const U8*) buffer, &blen);
1976 buffer = (char *) tmpbuf;
1977 doing_utf8 = TRUE;
1978 }
a0d0e21e 1979 }
c9cb0f41
NC
1980 else if (doing_utf8) {
1981 STRLEN tmplen = blen;
a79db61d 1982 U8 * const result = bytes_from_utf8((const U8*) buffer, &tmplen, &doing_utf8);
c9cb0f41
NC
1983 if (!doing_utf8) {
1984 tmpbuf = result;
1985 buffer = (char *) tmpbuf;
1986 blen = tmplen;
1987 }
1988 else {
1989 assert((char *)result == buffer);
1990 Perl_croak(aTHX_ "Wide character in %s", OP_DESC(PL_op));
1991 }
7d59b7e4
NIS
1992 }
1993
e2712234 1994#ifdef HAS_SOCKET
7627e6d0 1995 if (op_type == OP_SEND) {
e2712234
NC
1996 const int flags = SvIVx(*++MARK);
1997 if (SP > MARK) {
1998 STRLEN mlen;
1999 char * const sockbuf = SvPVx(*++MARK, mlen);
375ed12a 2000 retval = PerlSock_sendto(fd, buffer, blen,
e2712234
NC
2001 flags, (struct sockaddr *)sockbuf, mlen);
2002 }
2003 else {
375ed12a 2004 retval = PerlSock_send(fd, buffer, blen, flags);
e2712234 2005 }
7627e6d0
NC
2006 }
2007 else
e2712234 2008#endif
7627e6d0 2009 {
c9cb0f41
NC
2010 Size_t length = 0; /* This length is in characters. */
2011 STRLEN blen_chars;
7d59b7e4 2012 IV offset;
c9cb0f41
NC
2013
2014 if (doing_utf8) {
2015 if (tmpbuf) {
2016 /* The SV is bytes, and we've had to upgrade it. */
2017 blen_chars = orig_blen_bytes;
2018 } else {
2019 /* The SV really is UTF-8. */
3f914778
FC
2020 /* Don't call sv_len_utf8 on a magical or overloaded
2021 scalar, as we might get back a different result. */
2022 blen_chars = sv_or_pv_len_utf8(bufsv, buffer, blen);
c9cb0f41
NC
2023 }
2024 } else {
2025 blen_chars = blen;
2026 }
2027
2028 if (MARK >= SP) {
2029 length = blen_chars;
2030 } else {
2031#if Size_t_size > IVSIZE
2032 length = (Size_t)SvNVx(*++MARK);
2033#else
2034 length = (Size_t)SvIVx(*++MARK);
2035#endif
4b0c4b6f
NC
2036 if ((SSize_t)length < 0) {
2037 Safefree(tmpbuf);
c9cb0f41 2038 DIE(aTHX_ "Negative length");
4b0c4b6f 2039 }
7d59b7e4 2040 }
c9cb0f41 2041
bbce6d69 2042 if (MARK < SP) {
a0d0e21e 2043 offset = SvIVx(*++MARK);
bbce6d69 2044 if (offset < 0) {
4b0c4b6f
NC
2045 if (-offset > (IV)blen_chars) {
2046 Safefree(tmpbuf);
cea2e8a9 2047 DIE(aTHX_ "Offset outside string");
4b0c4b6f 2048 }
c9cb0f41 2049 offset += blen_chars;
3c946528 2050 } else if (offset > (IV)blen_chars) {
4b0c4b6f 2051 Safefree(tmpbuf);
cea2e8a9 2052 DIE(aTHX_ "Offset outside string");
4b0c4b6f 2053 }
bbce6d69 2054 } else
a0d0e21e 2055 offset = 0;
c9cb0f41
NC
2056 if (length > blen_chars - offset)
2057 length = blen_chars - offset;
2058 if (doing_utf8) {
2059 /* Here we convert length from characters to bytes. */
2060 if (tmpbuf || SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
2061 /* Either we had to convert the SV, or the SV is magical, or
2062 the SV has overloading, in which case we can't or mustn't
2063 or mustn't call it again. */
2064
2065 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
2066 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
2067 } else {
2068 /* It's a real UTF-8 SV, and it's not going to change under
2069 us. Take advantage of any cache. */
2070 I32 start = offset;
2071 I32 len_I32 = length;
2072
2073 /* Convert the start and end character positions to bytes.
2074 Remember that the second argument to sv_pos_u2b is relative
2075 to the first. */
2076 sv_pos_u2b(bufsv, &start, &len_I32);
2077
2078 buffer += start;
2079 length = len_I32;
2080 }
7d59b7e4
NIS
2081 }
2082 else {
2083 buffer = buffer+offset;
2084 }
a7092146 2085#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 2086 if (IoTYPE(io) == IoTYPE_SOCKET) {
375ed12a 2087 retval = PerlSock_send(fd, buffer, length, 0);
a7092146
GS
2088 }
2089 else
2090#endif
2091 {
94e4c244 2092 /* See the note at doio.c:do_print about filesize limits. --jhi */
375ed12a 2093 retval = PerlLIO_write(fd, buffer, length);
a7092146 2094 }
a0d0e21e 2095 }
c9cb0f41 2096
8c99d73e 2097 if (retval < 0)
a0d0e21e
LW
2098 goto say_undef;
2099 SP = ORIGMARK;
c9cb0f41 2100 if (doing_utf8)
f36eea10 2101 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
4b0c4b6f 2102
a79db61d 2103 Safefree(tmpbuf);
8c99d73e
GS
2104#if Size_t_size > IVSIZE
2105 PUSHn(retval);
2106#else
2107 PUSHi(retval);
2108#endif
a0d0e21e
LW
2109 RETURN;
2110
2111 say_undef:
a79db61d 2112 Safefree(tmpbuf);
a0d0e21e
LW
2113 SP = ORIGMARK;
2114 RETPUSHUNDEF;
2115}
2116
a0d0e21e
LW
2117PP(pp_eof)
2118{
20b7effb 2119 dSP;
a0d0e21e 2120 GV *gv;
32e65323 2121 IO *io;
a5e1d062 2122 const MAGIC *mg;
bc0c81ca
NC
2123 /*
2124 * in Perl 5.12 and later, the additional parameter is a bitmask:
2125 * 0 = eof
2126 * 1 = eof(FH)
2127 * 2 = eof() <- ARGV magic
2128 *
2129 * I'll rely on the compiler's trace flow analysis to decide whether to
2130 * actually assign this out here, or punt it into the only block where it is
2131 * used. Doing it out here is DRY on the condition logic.
2132 */
2133 unsigned int which;
a0d0e21e 2134
bc0c81ca 2135 if (MAXARG) {
32e65323 2136 gv = PL_last_in_gv = MUTABLE_GV(POPs); /* eof(FH) */
bc0c81ca
NC
2137 which = 1;
2138 }
b5f55170
NC
2139 else {
2140 EXTEND(SP, 1);
2141
bc0c81ca 2142 if (PL_op->op_flags & OPf_SPECIAL) {
b5f55170 2143 gv = PL_last_in_gv = GvEGVx(PL_argvgv); /* eof() - ARGV magic */
bc0c81ca
NC
2144 which = 2;
2145 }
2146 else {
b5f55170 2147 gv = PL_last_in_gv; /* eof */
bc0c81ca
NC
2148 which = 0;
2149 }
b5f55170 2150 }
32e65323
CS
2151
2152 if (!gv)
2153 RETPUSHNO;
2154
2155 if ((io = GvIO(gv)) && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) {
3e0cb5de 2156 return tied_method1(SV_CONST(EOF), SP, MUTABLE_SV(io), mg, newSVuv(which));
146174a9 2157 }
4592e6ca 2158
32e65323
CS
2159 if (!MAXARG && (PL_op->op_flags & OPf_SPECIAL)) { /* eof() */
2160 if (io && !IoIFP(io)) {
b9f2b683 2161 if ((IoFLAGS(io) & IOf_START) && av_tindex(GvAVn(gv)) < 0) {
1037353b 2162 SV ** svp;
32e65323
CS
2163 IoLINES(io) = 0;
2164 IoFLAGS(io) &= ~IOf_START;
d5eb9a46 2165 do_open6(gv, "-", 1, NULL, NULL, 0);
1037353b
DD
2166 svp = &GvSV(gv);
2167 if (*svp) {
2168 SV * sv = *svp;
2169 sv_setpvs(sv, "-");
2170 SvSETMAGIC(sv);
2171 }
32e65323 2172 else
1037353b 2173 *svp = newSVpvs("-");
32e65323 2174 }
157fb5a1 2175 else if (!nextargv(gv, FALSE))
32e65323 2176 RETPUSHYES;
6136c704 2177 }
4592e6ca
NIS
2178 }
2179
32e65323 2180 PUSHs(boolSV(do_eof(gv)));
a0d0e21e
LW
2181 RETURN;
2182}
2183
2184PP(pp_tell)
2185{
20b7effb 2186 dSP; dTARGET;
301e8125 2187 GV *gv;
5b468f54 2188 IO *io;
a0d0e21e 2189
b64a1294 2190 if (MAXARG != 0 && (TOPs || POPs))
159b6efe 2191 PL_last_in_gv = MUTABLE_GV(POPs);
ac3697cd
NC
2192 else
2193 EXTEND(SP, 1);
c4420975 2194 gv = PL_last_in_gv;
4592e6ca 2195
9c9f25b8
NC
2196 io = GvIO(gv);
2197 if (io) {
a5e1d062 2198 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2199 if (mg) {
3e0cb5de 2200 return tied_method0(SV_CONST(TELL), SP, MUTABLE_SV(io), mg);
a79db61d 2201 }
4592e6ca 2202 }
f4817f32 2203 else if (!gv) {
f03173f2
RGS
2204 if (!errno)
2205 SETERRNO(EBADF,RMS_IFI);
2206 PUSHi(-1);
2207 RETURN;
2208 }
4592e6ca 2209
146174a9
CB
2210#if LSEEKSIZE > IVSIZE
2211 PUSHn( do_tell(gv) );
2212#else
a0d0e21e 2213 PUSHi( do_tell(gv) );
146174a9 2214#endif
a0d0e21e
LW
2215 RETURN;
2216}
2217
b1c05ba5
DM
2218
2219/* also used for: pp_seek() */
2220
137443ea
PP
2221PP(pp_sysseek)
2222{
20b7effb 2223 dSP;
1df70142 2224 const int whence = POPi;
146174a9 2225#if LSEEKSIZE > IVSIZE
7452cf6a 2226 const Off_t offset = (Off_t)SvNVx(POPs);
146174a9 2227#else
7452cf6a 2228 const Off_t offset = (Off_t)SvIVx(POPs);
146174a9 2229#endif
a0d0e21e 2230
159b6efe 2231 GV * const gv = PL_last_in_gv = MUTABLE_GV(POPs);
9c9f25b8 2232 IO *const io = GvIO(gv);
4592e6ca 2233
9c9f25b8 2234 if (io) {
a5e1d062 2235 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2236 if (mg) {
cb50131a 2237#if LSEEKSIZE > IVSIZE
74f0b550 2238 SV *const offset_sv = newSVnv((NV) offset);
cb50131a 2239#else
74f0b550 2240 SV *const offset_sv = newSViv(offset);
cb50131a 2241#endif
bc0c81ca 2242
3e0cb5de 2243 return tied_method2(SV_CONST(SEEK), SP, MUTABLE_SV(io), mg, offset_sv,
d682515d 2244 newSViv(whence));
a79db61d 2245 }
4592e6ca
NIS
2246 }
2247
533c011a 2248 if (PL_op->op_type == OP_SEEK)
8903cb82
PP
2249 PUSHs(boolSV(do_seek(gv, offset, whence)));
2250 else {
0bcc34c2 2251 const Off_t sought = do_sysseek(gv, offset, whence);
b448e4fe 2252 if (sought < 0)
146174a9
CB
2253 PUSHs(&PL_sv_undef);
2254 else {
7452cf6a 2255 SV* const sv = sought ?
146174a9 2256#if LSEEKSIZE > IVSIZE
b448e4fe 2257 newSVnv((NV)sought)
146174a9 2258#else
b448e4fe 2259 newSViv(sought)
146174a9
CB
2260#endif
2261 : newSVpvn(zero_but_true, ZBTLEN);
6e449a3a 2262 mPUSHs(sv);
146174a9 2263 }
8903cb82 2264 }
a0d0e21e
LW
2265 RETURN;
2266}
2267
2268PP(pp_truncate)
2269{
39644a26 2270 dSP;
8c99d73e
GS
2271 /* There seems to be no consensus on the length type of truncate()
2272 * and ftruncate(), both off_t and size_t have supporters. In
2273 * general one would think that when using large files, off_t is
2274 * at least as wide as size_t, so using an off_t should be okay. */
2275 /* XXX Configure probe for the length type of *truncate() needed XXX */
0bcc34c2 2276 Off_t len;
a0d0e21e 2277
25342a55 2278#if Off_t_size > IVSIZE
0bcc34c2 2279 len = (Off_t)POPn;
8c99d73e 2280#else
0bcc34c2 2281 len = (Off_t)POPi;
8c99d73e
GS
2282#endif
2283 /* Checking for length < 0 is problematic as the type might or
301e8125 2284 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 2285 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2286 SETERRNO(0,0);
d05c1ba0 2287 {
5e0adc2d 2288 SV * const sv = POPs;
d05c1ba0
JH
2289 int result = 1;
2290 GV *tmpgv;
090bf15b
SR
2291 IO *io;
2292
42409c40
FC
2293 if (PL_op->op_flags & OPf_SPECIAL
2294 ? (tmpgv = gv_fetchsv(sv, 0, SVt_PVIO), 1)
2295 : !!(tmpgv = MAYBE_DEREF_GV(sv)) ) {
9c9f25b8
NC
2296 io = GvIO(tmpgv);
2297 if (!io)
090bf15b 2298 result = 0;
d05c1ba0 2299 else {
090bf15b 2300 PerlIO *fp;
090bf15b
SR
2301 do_ftruncate_io:
2302 TAINT_PROPER("truncate");
2303 if (!(fp = IoIFP(io))) {
2304 result = 0;
2305 }
2306 else {
375ed12a
JH
2307 int fd = PerlIO_fileno(fp);
2308 if (fd < 0) {
2309 SETERRNO(EBADF,RMS_IFI);
2310 result = 0;
2311 } else {
a9f17b43
JH
2312 if (len < 0) {
2313 SETERRNO(EINVAL, LIB_INVARG);
2314 result = 0;
2315 } else {
2316 PerlIO_flush(fp);
cbdc8872 2317#ifdef HAS_TRUNCATE
a9f17b43 2318 if (ftruncate(fd, len) < 0)
301e8125 2319#else
a9f17b43 2320 if (my_chsize(fd, len) < 0)
cbdc8872 2321#endif
a9f17b43
JH
2322 result = 0;
2323 }
375ed12a 2324 }
090bf15b 2325 }
d05c1ba0 2326 }
cbdc8872 2327 }
5e0adc2d 2328 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2329 io = MUTABLE_IO(SvRV(sv)); /* *main::FRED{IO} for example */
090bf15b 2330 goto do_ftruncate_io;
5e0adc2d
FC
2331 }
2332 else {
2333 const char * const name = SvPV_nomg_const_nolen(sv);
d05c1ba0 2334 TAINT_PROPER("truncate");
cbdc8872 2335#ifdef HAS_TRUNCATE
d05c1ba0
JH
2336 if (truncate(name, len) < 0)
2337 result = 0;
cbdc8872 2338#else
d05c1ba0 2339 {
d484df69
TC
2340 int mode = O_RDWR;
2341 int tmpfd;
2342
2343#if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE)
2344 mode |= O_LARGEFILE; /* Transparently largefiley. */
2345#endif
2346#ifdef O_BINARY
2347 /* On open(), the Win32 CRT tries to seek around text
2348 * files using 32-bit offsets, which causes the open()
2349 * to fail on large files, so open in binary mode.
2350 */
2351 mode |= O_BINARY;
2352#endif
2353 tmpfd = PerlLIO_open(name, mode);
d05c1ba0 2354
375ed12a 2355 if (tmpfd < 0) {
cbdc8872 2356 result = 0;
375ed12a 2357 } else {
d05c1ba0
JH
2358 if (my_chsize(tmpfd, len) < 0)
2359 result = 0;
2360 PerlLIO_close(tmpfd);
2361 }
cbdc8872 2362 }
a0d0e21e 2363#endif
d05c1ba0 2364 }
a0d0e21e 2365
d05c1ba0
JH
2366 if (result)
2367 RETPUSHYES;
2368 if (!errno)
93189314 2369 SETERRNO(EBADF,RMS_IFI);
d05c1ba0
JH
2370 RETPUSHUNDEF;
2371 }
a0d0e21e
LW
2372}
2373
b1c05ba5
DM
2374
2375/* also used for: pp_fcntl() */
2376
a0d0e21e
LW
2377PP(pp_ioctl)
2378{
20b7effb 2379 dSP; dTARGET;
7452cf6a 2380 SV * const argsv = POPs;
1df70142 2381 const unsigned int func = POPu;
49225470 2382 int optype;
159b6efe 2383 GV * const gv = MUTABLE_GV(POPs);
8a6c0fcb 2384 IO * const io = GvIOn(gv);
a0d0e21e 2385 char *s;
324aa91a 2386 IV retval;
a0d0e21e 2387
8a6c0fcb 2388 if (!IoIFP(io)) {
51087808 2389 report_evil_fh(gv);
93189314 2390 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
a0d0e21e
LW
2391 RETPUSHUNDEF;
2392 }
2393
748a9306 2394 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2395 STRLEN len;
324aa91a 2396 STRLEN need;
748a9306 2397 s = SvPV_force(argsv, len);
324aa91a
HF
2398 need = IOCPARM_LEN(func);
2399 if (len < need) {
2400 s = Sv_Grow(argsv, need + 1);
2401 SvCUR_set(argsv, need);
a0d0e21e
LW
2402 }
2403
748a9306 2404 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW
2405 }
2406 else {
748a9306 2407 retval = SvIV(argsv);
c529f79d 2408 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW
2409 }
2410
49225470 2411 optype = PL_op->op_type;
ed4b2e6b 2412 TAINT_PROPER(PL_op_desc[optype]);
a0d0e21e
LW
2413
2414 if (optype == OP_IOCTL)
2415#ifdef HAS_IOCTL
76e3520e 2416 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2417#else
cea2e8a9 2418 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW
2419#endif
2420 else
c214f4ad
B
2421#ifndef HAS_FCNTL
2422 DIE(aTHX_ "fcntl is not implemented");
2423#else
55497cff 2424#if defined(OS2) && defined(__EMX__)
760ac839 2425 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2426#else
760ac839 2427 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2428#endif
6652bd42 2429#endif
a0d0e21e 2430
6652bd42 2431#if defined(HAS_IOCTL) || defined(HAS_FCNTL)
748a9306
LW
2432 if (SvPOK(argsv)) {
2433 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2434 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
53e06cf0 2435 OP_NAME(PL_op));
748a9306
LW
2436 s[SvCUR(argsv)] = 0; /* put our null back */
2437 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW
2438 }
2439
2440 if (retval == -1)
2441 RETPUSHUNDEF;
2442 if (retval != 0) {
2443 PUSHi(retval);
2444 }
2445 else {
8903cb82 2446 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e 2447 }
4808266b 2448#endif
c214f4ad 2449 RETURN;
a0d0e21e
LW
2450}
2451
2452PP(pp_flock)
2453{
9cad6237 2454#ifdef FLOCK
20b7effb 2455 dSP; dTARGET;
a0d0e21e 2456 I32 value;
7452cf6a 2457 const int argtype = POPi;
1f28cbca 2458 GV * const gv = MUTABLE_GV(POPs);
9c9f25b8
NC
2459 IO *const io = GvIO(gv);
2460 PerlIO *const fp = io ? IoIFP(io) : NULL;
16d20bd9 2461
0bcc34c2 2462 /* XXX Looks to me like io is always NULL at this point */
a0d0e21e 2463 if (fp) {
68dc0745 2464 (void)PerlIO_flush(fp);
76e3520e 2465 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2466 }
cb50131a 2467 else {
51087808 2468 report_evil_fh(gv);
a0d0e21e 2469 value = 0;
93189314 2470 SETERRNO(EBADF,RMS_IFI);
cb50131a 2471 }
a0d0e21e
LW
2472 PUSHi(value);
2473 RETURN;
2474#else
56a94ef2 2475 DIE(aTHX_ PL_no_func, "flock");
a0d0e21e
LW
2476#endif
2477}
2478
2479/* Sockets. */
2480
7627e6d0
NC
2481#ifdef HAS_SOCKET
2482
a0d0e21e
LW
2483PP(pp_socket)
2484{
20b7effb 2485 dSP;
7452cf6a
AL
2486 const int protocol = POPi;
2487 const int type = POPi;
2488 const int domain = POPi;
159b6efe 2489 GV * const gv = MUTABLE_GV(POPs);
5805b585 2490 IO * const io = GvIOn(gv);
a0d0e21e
LW
2491 int fd;
2492
57171420
BS
2493 if (IoIFP(io))
2494 do_close(gv, FALSE);
2495
a0d0e21e 2496 TAINT_PROPER("socket");
6ad3d225 2497 fd = PerlSock_socket(domain, type, protocol);
375ed12a
JH
2498 if (fd < 0) {
2499 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 2500 RETPUSHUNDEF;
375ed12a 2501 }
460c8493
IZ
2502 IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2503 IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2504 IoTYPE(io) = IoTYPE_SOCKET;
a0d0e21e 2505 if (!IoIFP(io) || !IoOFP(io)) {
760ac839
LW
2506 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2507 if (IoOFP(io)) PerlIO_close(IoOFP(io));
6ad3d225 2508 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
a0d0e21e
LW
2509 RETPUSHUNDEF;
2510 }
131d45a9
JH
2511#if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
2512 /* ensure close-on-exec */
2513 if (fd > PL_maxsysfd && fcntl(fd, F_SETFD, FD_CLOEXEC) < 0)
375ed12a 2514 RETPUSHUNDEF;
8d2a6795 2515#endif
a0d0e21e
LW
2516
2517 RETPUSHYES;
a0d0e21e 2518}
7627e6d0 2519#endif
a0d0e21e
LW
2520
2521PP(pp_sockpair)
2522{
c95c94b1 2523#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
20b7effb 2524 dSP;
e0b7b5e2 2525 int fd[2];
7452cf6a
AL
2526 const int protocol = POPi;
2527 const int type = POPi;
2528 const int domain = POPi;
e0b7b5e2 2529
159b6efe 2530 GV * const gv2 = MUTABLE_GV(POPs);
49561e08
FC
2531 IO * const io2 = GvIOn(gv2);
2532 GV * const gv1 = MUTABLE_GV(POPs);
2533 IO * const io1 = GvIOn(gv1);
a0d0e21e 2534
49561e08 2535 if (IoIFP(io1))
dc0d0a5f 2536 do_close(gv1, FALSE);
49561e08 2537 if (IoIFP(io2))
dc0d0a5f 2538 do_close(gv2, FALSE);
57171420 2539
a0d0e21e 2540 TAINT_PROPER("socketpair");
6ad3d225 2541 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
a0d0e21e 2542 RETPUSHUNDEF;
460c8493
IZ
2543 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2544 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
50952442 2545 IoTYPE(io1) = IoTYPE_SOCKET;
460c8493
IZ
2546 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2547 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
50952442 2548 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2549 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW
2550 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2551 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2552 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW
2553 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2554 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2555 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW
2556 RETPUSHUNDEF;
2557 }
131d45a9 2558#if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
375ed12a 2559 /* ensure close-on-exec */
131d45a9
JH
2560 if ((fd[0] > PL_maxsysfd && fcntl(fd[0], F_SETFD, FD_CLOEXEC) < 0) ||
2561 (fd[1] > PL_maxsysfd && fcntl(fd[1], F_SETFD, FD_CLOEXEC) < 0))
375ed12a 2562 RETPUSHUNDEF;
8d2a6795 2563#endif
a0d0e21e
LW
2564
2565 RETPUSHYES;
2566#else
cea2e8a9 2567 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW
2568#endif
2569}
2570
7627e6d0
NC
2571#ifdef HAS_SOCKET
2572
b1c05ba5
DM
2573/* also used for: pp_connect() */
2574
a0d0e21e
LW
2575PP(pp_bind)
2576{
20b7effb 2577 dSP;
7452cf6a 2578 SV * const addrsv = POPs;
349d4f2f
NC
2579 /* OK, so on what platform does bind modify addr? */
2580 const char *addr;
159b6efe 2581 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2582 IO * const io = GvIOn(gv);
a0d0e21e 2583 STRLEN len;
e0b7b5e2 2584 int op_type;
375ed12a 2585 int fd;
a0d0e21e 2586
8a6c0fcb 2587 if (!IoIFP(io))
a0d0e21e 2588 goto nuts;
375ed12a
JH
2589 fd = PerlIO_fileno(IoIFP(io));
2590 if (fd < 0)
2591 goto nuts;
a0d0e21e 2592
349d4f2f 2593 addr = SvPV_const(addrsv, len);
e0b7b5e2 2594 op_type = PL_op->op_type;
32b81f04
NC
2595 TAINT_PROPER(PL_op_desc[op_type]);
2596 if ((op_type == OP_BIND
375ed12a
JH
2597 ? PerlSock_bind(fd, (struct sockaddr *)addr, len)
2598 : PerlSock_connect(fd, (struct sockaddr *)addr, len))
32b81f04 2599 >= 0)
a0d0e21e
LW
2600 RETPUSHYES;
2601 else
2602 RETPUSHUNDEF;
2603
7b52d656 2604 nuts:
fbcda526 2605 report_evil_fh(gv);
93189314 2606 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2607 RETPUSHUNDEF;
a0d0e21e
LW
2608}
2609
2610PP(pp_listen)
2611{
20b7effb 2612 dSP;
7452cf6a 2613 const int backlog = POPi;
159b6efe 2614 GV * const gv = MUTABLE_GV(POPs);
8a6c0fcb 2615 IO * const io = GvIOn(gv);
a0d0e21e 2616
8a6c0fcb 2617 if (!IoIFP(io))
a0d0e21e
LW
2618 goto nuts;
2619
6ad3d225 2620 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW
2621 RETPUSHYES;
2622 else
2623 RETPUSHUNDEF;
2624
7b52d656 2625 nuts:
fbcda526 2626 report_evil_fh(gv);
93189314 2627 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2628 RETPUSHUNDEF;
a0d0e21e
LW
2629}
2630
2631PP(pp_accept)
2632{
20b7effb 2633 dSP; dTARGET;
eb578fdb 2634 IO *nstio;
93d47a36 2635 char namebuf[MAXPATHLEN];
b5afd346 2636#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
93d47a36
JH
2637 Sock_size_t len = sizeof (struct sockaddr_in);
2638#else
2639 Sock_size_t len = sizeof namebuf;
2640#endif
159b6efe
NC
2641 GV * const ggv = MUTABLE_GV(POPs);
2642 GV * const ngv = MUTABLE_GV(POPs);
a0d0e21e
LW
2643 int fd;
2644
8a6c0fcb 2645 IO * const gstio = GvIO(ggv);
a0d0e21e
LW
2646 if (!gstio || !IoIFP(gstio))
2647 goto nuts;
2648
2649 nstio = GvIOn(ngv);
93d47a36 2650 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
e294cc5d
JH
2651#if defined(OEMVS)
2652 if (len == 0) {
2653 /* Some platforms indicate zero length when an AF_UNIX client is
2654 * not bound. Simulate a non-zero-length sockaddr structure in
2655 * this case. */
2656 namebuf[0] = 0; /* sun_len */
2657 namebuf[1] = AF_UNIX; /* sun_family */
2658 len = 2;
2659 }
2660#endif
2661
a0d0e21e
LW
2662 if (fd < 0)
2663 goto badexit;
a70048fb
AB
2664 if (IoIFP(nstio))
2665 do_close(ngv, FALSE);
460c8493
IZ
2666 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2667 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2668 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2669 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW
2670 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2671 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2672 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW
2673 goto badexit;
2674 }
131d45a9
JH
2675#if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
2676 /* ensure close-on-exec */
2677 if (fd > PL_maxsysfd && fcntl(fd, F_SETFD, FD_CLOEXEC) < 0)
375ed12a 2678 goto badexit;
8d2a6795 2679#endif
a0d0e21e 2680
381c1bae 2681#ifdef __SCO_VERSION__
93d47a36 2682 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
381c1bae 2683#endif
ed79a026 2684
93d47a36 2685 PUSHp(namebuf, len);
a0d0e21e
LW
2686 RETURN;
2687
7b52d656 2688 nuts:
fbcda526 2689 report_evil_fh(ggv);
93189314 2690 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2691
7b52d656 2692 badexit:
a0d0e21e
LW
2693 RETPUSHUNDEF;
2694
a0d0e21e
LW
2695}
2696
2697PP(pp_shutdown)
2698{
20b7effb 2699 dSP; dTARGET;
7452cf6a 2700 const int how = POPi;
159b6efe 2701 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2702 IO * const io = GvIOn(gv);
a0d0e21e 2703
8a6c0fcb 2704 if (!IoIFP(io))
a0d0e21e
LW
2705 goto nuts;
2706
6ad3d225 2707 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW
2708 RETURN;
2709
7b52d656 2710 nuts:
fbcda526 2711 report_evil_fh(gv);
93189314 2712 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2713 RETPUSHUNDEF;
a0d0e21e
LW
2714}
2715
b1c05ba5
DM
2716
2717/* also used for: pp_gsockopt() */
2718
a0d0e21e
LW
2719PP(pp_ssockopt)
2720{
20b7effb 2721 dSP;
7452cf6a 2722 const int optype = PL_op->op_type;
561b68a9 2723 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
7452cf6a
AL
2724 const unsigned int optname = (unsigned int) POPi;
2725 const unsigned int lvl = (unsigned int) POPi;
159b6efe 2726 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2727 IO * const io = GvIOn(gv);
a0d0e21e 2728 int fd;
1e422769 2729 Sock_size_t len;
a0d0e21e 2730
49225470 2731 if (!IoIFP(io))
a0d0e21e
LW
2732 goto nuts;
2733
760ac839 2734 fd = PerlIO_fileno(IoIFP(io));
375ed12a
JH
2735 if (fd < 0)
2736 goto nuts;
a0d0e21e
LW
2737 switch (optype) {
2738 case OP_GSOCKOPT:
748a9306 2739 SvGROW(sv, 257);
a0d0e21e 2740 (void)SvPOK_only(sv);
748a9306
LW
2741 SvCUR_set(sv,256);
2742 *SvEND(sv) ='\0';
1e422769 2743 len = SvCUR(sv);
6ad3d225 2744 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2745 goto nuts2;
ee2276e5
JH
2746#if defined(_AIX)
2747 /* XXX Configure test: does getsockopt set the length properly? */
2748 if (len == 256)
2749 len = sizeof(int);
2750#endif
1e422769 2751 SvCUR_set(sv, len);
748a9306 2752 *SvEND(sv) ='\0';
a0d0e21e
LW
2753 PUSHs(sv);
2754 break;
2755 case OP_SSOCKOPT: {
1215b447
JH
2756#if defined(__SYMBIAN32__)
2757# define SETSOCKOPT_OPTION_VALUE_T void *
2758#else
2759# define SETSOCKOPT_OPTION_VALUE_T const char *
2760#endif
2761 /* XXX TODO: We need to have a proper type (a Configure probe,
2762 * etc.) for what the C headers think of the third argument of
2763 * setsockopt(), the option_value read-only buffer: is it
2764 * a "char *", or a "void *", const or not. Some compilers
2765 * don't take kindly to e.g. assuming that "char *" implicitly
2766 * promotes to a "void *", or to explicitly promoting/demoting
2767 * consts to non/vice versa. The "const void *" is the SUS
2768 * definition, but that does not fly everywhere for the above
2769 * reasons. */
2770 SETSOCKOPT_OPTION_VALUE_T buf;
1e422769
PP
2771 int aint;
2772 if (SvPOKp(sv)) {
2d8e6c8d 2773 STRLEN l;
1215b447 2774 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2d8e6c8d 2775 len = l;
1e422769 2776 }
56ee1660 2777 else {
a0d0e21e 2778 aint = (int)SvIV(sv);
1215b447 2779 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
a0d0e21e
LW
2780 len = sizeof(int);
2781 }
6ad3d225 2782 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2783 goto nuts2;
3280af22 2784 PUSHs(&PL_sv_yes);
a0d0e21e
LW
2785 }
2786 break;
2787 }
2788 RETURN;
2789
7b52d656 2790 nuts:
fbcda526 2791 report_evil_fh(gv);
93189314 2792 SETERRNO(EBADF,SS_IVCHAN);
7b52d656 2793 nuts2:
a0d0e21e
LW
2794 RETPUSHUNDEF;
2795
a0d0e21e
LW
2796}
2797
b1c05ba5
DM
2798
2799/* also used for: pp_getsockname() */
2800
a0d0e21e
LW
2801PP(pp_getpeername)
2802{
20b7effb 2803 dSP;
7452cf6a 2804 const int optype = PL_op->op_type;
159b6efe 2805 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2806 IO * const io = GvIOn(gv);
7452cf6a 2807 Sock_size_t len;
a0d0e21e
LW
2808 SV *sv;
2809 int fd;
a0d0e21e 2810
49225470 2811 if (!IoIFP(io))
a0d0e21e
LW
2812 goto nuts;
2813
561b68a9 2814 sv = sv_2mortal(newSV(257));
748a9306 2815 (void)SvPOK_only(sv);
1e422769
PP
2816 len = 256;
2817 SvCUR_set(sv, len);
748a9306 2818 *SvEND(sv) ='\0';
760ac839 2819 fd = PerlIO_fileno(IoIFP(io));
375ed12a
JH
2820 if (fd < 0)
2821 goto nuts;
a0d0e21e
LW
2822 switch (optype) {
2823 case OP_GETSOCKNAME:
6ad3d225 2824 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW
2825 goto nuts2;
2826 break;
2827 case OP_GETPEERNAME:
6ad3d225 2828 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2829 goto nuts2;
490ab354
JH
2830#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2831 {
2832 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";
2833 /* If the call succeeded, make sure we don't have a zeroed port/addr */
349d4f2f 2834 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2fbb330f 2835 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
490ab354 2836 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2837 goto nuts2;
490ab354
JH
2838 }
2839 }
2840#endif
a0d0e21e
LW
2841 break;
2842 }
13826f2c
CS
2843#ifdef BOGUS_GETNAME_RETURN
2844 /* Interactive Unix, getpeername() and getsockname()
2845 does not return valid namelen */
1e422769
PP
2846 if (len == BOGUS_GETNAME_RETURN)
2847 len = sizeof(struct sockaddr);
13826f2c 2848#endif
1e422769 2849 SvCUR_set(sv, len);
748a9306 2850 *SvEND(sv) ='\0';
a0d0e21e
LW
2851 PUSHs(sv);
2852 RETURN;
2853
7b52d656 2854 nuts:
fbcda526 2855 report_evil_fh(gv);
93189314 2856 SETERRNO(EBADF,SS_IVCHAN);
7b52d656 2857 nuts2:
a0d0e21e 2858 RETPUSHUNDEF;
7627e6d0 2859}
a0d0e21e 2860
a0d0e21e 2861#endif
a0d0e21e
LW
2862
2863/* Stat calls. */
2864
b1c05ba5
DM
2865/* also used for: pp_lstat() */
2866
a0d0e21e
LW
2867PP(pp_stat)
2868{
39644a26 2869 dSP;
10edeb5d 2870 GV *gv = NULL;
55dd8d50 2871 IO *io = NULL;
54310121 2872 I32 gimme;
a0d0e21e 2873 I32 max = 13;
109c43ed 2874 SV* sv;
a0d0e21e 2875
109c43ed
FC
2876 if (PL_op->op_flags & OPf_REF ? (gv = cGVOP_gv, 1)
2877 : !!(sv=POPs, gv = MAYBE_DEREF_GV(sv))) {
8a4e5b40 2878 if (PL_op->op_type == OP_LSTAT) {
5d3e98de 2879 if (gv != PL_defgv) {
5d329e6e 2880 do_fstat_warning_check:
a2a5de95 2881 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
93fad930
FC
2882 "lstat() on filehandle%s%"SVf,
2883 gv ? " " : "",
2884 SVfARG(gv
bf29d05f
BF
2885 ? sv_2mortal(newSVhek(GvENAME_HEK(gv)))
2886 : &PL_sv_no));
5d3e98de 2887 } else if (PL_laststype != OP_LSTAT)
b042df57 2888 /* diag_listed_as: The stat preceding %s wasn't an lstat */
8a4e5b40 2889 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
8a4e5b40
DD
2890 }
2891
2dd78f96 2892 if (gv != PL_defgv) {
b8413ac3 2893 bool havefp;
0d5064f1 2894 do_fstat_have_io:
b8413ac3 2895 havefp = FALSE;
3280af22 2896 PL_laststype = OP_STAT;
0d5064f1 2897 PL_statgv = gv ? gv : (GV *)io;
76f68e9b 2898 sv_setpvs(PL_statname, "");
5228a96c 2899 if(gv) {
ad02613c 2900 io = GvIO(gv);
0d5064f1
FC
2901 }
2902 if (io) {
5228a96c 2903 if (IoIFP(io)) {
375ed12a
JH
2904 int fd = PerlIO_fileno(IoIFP(io));
2905 if (fd < 0) {
2906 PL_laststatval = -1;
2907 SETERRNO(EBADF,RMS_IFI);
2908 } else {
2909 PL_laststatval = PerlLIO_fstat(fd, &PL_statcache);
2910 havefp = TRUE;
2911 }
5228a96c 2912 } else if (IoDIRP(io)) {
5228a96c 2913 PL_laststatval =
3497a01f 2914 PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache);
8080e3c8 2915 havefp = TRUE;
5228a96c
SP
2916 } else {
2917 PL_laststatval = -1;
2918 }
5228a96c 2919 }
05bb32d2 2920 else PL_laststatval = -1;
daa30a68 2921 if (PL_laststatval < 0 && !havefp) report_evil_fh(gv);
5228a96c
SP
2922 }
2923
9ddeeac9 2924 if (PL_laststatval < 0) {
a0d0e21e 2925 max = 0;
9ddeeac9 2926 }
a0d0e21e
LW
2927 }
2928 else {
7cb3f959 2929 const char *file;
109c43ed 2930 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2931 io = MUTABLE_IO(SvRV(sv));
ad02613c
SP
2932 if (PL_op->op_type == OP_LSTAT)
2933 goto do_fstat_warning_check;
2934 goto do_fstat_have_io;
2935 }
2936
4bac9ae4 2937 SvTAINTED_off(PL_statname); /* previous tainting irrelevant */
109c43ed 2938 sv_setpv(PL_statname, SvPV_nomg_const_nolen(sv));
a0714e2c 2939 PL_statgv = NULL;
533c011a 2940 PL_laststype = PL_op->op_type;
7cb3f959 2941 file = SvPV_nolen_const(PL_statname);
533c011a 2942 if (PL_op->op_type == OP_LSTAT)
7cb3f959 2943 PL_laststatval = PerlLIO_lstat(file, &PL_statcache);
a0d0e21e 2944 else
7cb3f959 2945 PL_laststatval = PerlLIO_stat(file, &PL_statcache);
3280af22 2946 if (PL_laststatval < 0) {
7cb3f959 2947 if (ckWARN(WARN_NEWLINE) && should_warn_nl(file)) {
5d37acd6
DM
2948 /* PL_warn_nl is constant */
2949 GCC_DIAG_IGNORE(-Wformat-nonliteral);
9014280d 2950 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
5d37acd6
DM
2951 GCC_DIAG_RESTORE;
2952 }
a0d0e21e
LW
2953 max = 0;
2954 }
2955 }
2956
54310121
PP
2957 gimme = GIMME_V;
2958 if (gimme != G_ARRAY) {
2959 if (gimme != G_VOID)
2960 XPUSHs(boolSV(max));
2961 RETURN;
a0d0e21e
LW
2962 }
2963 if (max) {
36477c24
PP
2964 EXTEND(SP, max);
2965 EXTEND_MORTAL(max);
6e449a3a 2966 mPUSHi(PL_statcache.st_dev);
8d8cba88
TC
2967#if ST_INO_SIZE > IVSIZE
2968 mPUSHn(PL_statcache.st_ino);
2969#else
2970# if ST_INO_SIGN <= 0
6e449a3a 2971 mPUSHi(PL_statcache.st_ino);
8d8cba88
TC
2972# else
2973 mPUSHu(PL_statcache.st_ino);
2974# endif
2975#endif
6e449a3a
MHM
2976 mPUSHu(PL_statcache.st_mode);
2977 mPUSHu(PL_statcache.st_nlink);
dfff4baf
BF
2978
2979 sv_setuid(PUSHmortal, PL_statcache.st_uid);
2980 sv_setgid(PUSHmortal, PL_statcache.st_gid);
2981
cbdc8872 2982#ifdef USE_STAT_RDEV
6e449a3a 2983 mPUSHi(PL_statcache.st_rdev);
cbdc8872 2984#else
84bafc02 2985 PUSHs(newSVpvs_flags("", SVs_TEMP));
cbdc8872 2986#endif
146174a9 2987#if Off_t_size > IVSIZE
6e449a3a 2988 mPUSHn(PL_statcache.st_size);
146174a9 2989#else
6e449a3a 2990 mPUSHi(PL_statcache.st_size);
146174a9 2991#endif
cbdc8872 2992#ifdef BIG_TIME
6e449a3a
MHM
2993 mPUSHn(PL_statcache.st_atime);
2994 mPUSHn(PL_statcache.st_mtime);
2995 mPUSHn(PL_statcache.st_ctime);
cbdc8872 2996#else
6e449a3a
MHM
2997 mPUSHi(PL_statcache.st_atime);
2998 mPUSHi(PL_statcache.st_mtime);
2999 mPUSHi(PL_statcache.st_ctime);
cbdc8872 3000#endif
a0d0e21e 3001#ifdef USE_STAT_BLOCKS
6e449a3a
MHM
3002 mPUSHu(PL_statcache.st_blksize);
3003 mPUSHu(PL_statcache.st_blocks);
a0d0e21e 3004#else
84bafc02
NC
3005 PUSHs(newSVpvs_flags("", SVs_TEMP));
3006 PUSHs(newSVpvs_flags("", SVs_TEMP));
a0d0e21e
LW
3007#endif
3008 }
3009 RETURN;
3010}
3011
6c48f025
NC
3012/* All filetest ops avoid manipulating the perl stack pointer in their main
3013 bodies (since commit d2c4d2d1e22d3125), and return using either
3014 S_ft_return_false() or S_ft_return_true(). These two helper functions are
3015 the only two which manipulate the perl stack. To ensure that no stack
3016 manipulation macros are used, the filetest ops avoid defining a local copy
3017 of the stack pointer with dSP. */
3018
8db8f6b6
FC
3019/* If the next filetest is stacked up with this one
3020 (PL_op->op_private & OPpFT_STACKING), we leave
3021 the original argument on the stack for success,
3022 and skip the stacked operators on failure.
3023 The next few macros/functions take care of this.
3024*/
3025
3026static OP *
9a6b02e8 3027S_ft_return_false(pTHX_ SV *ret) {
8db8f6b6 3028 OP *next = NORMAL;
697f9d37
NC
3029 dSP;
3030
226b9201 3031 if (PL_op->op_flags & OPf_REF) XPUSHs(ret);
8db8f6b6
FC
3032 else SETs(ret);
3033 PUTBACK;
697f9d37 3034
9a6b02e8
NC
3035 if (PL_op->op_private & OPpFT_STACKING) {
3036 while (OP_IS_FILETEST(next->op_type)
3037 && next->op_private & OPpFT_STACKED)
3038 next = next->op_next;
3039 }
8db8f6b6
FC
3040 return next;
3041}
3042
07ed4d4b
NC
3043PERL_STATIC_INLINE OP *
3044S_ft_return_true(pTHX_ SV *ret) {
3045 dSP;
3046 if (PL_op->op_flags & OPf_REF)
3047 XPUSHs(PL_op->op_private & OPpFT_STACKING ? (SV *)cGVOP_gv : (ret));
3048 else if (!(PL_op->op_private & OPpFT_STACKING))
3049 SETs(ret);
3050 PUTBACK;
3051 return NORMAL;
3052}
8db8f6b6 3053
48d023d6
NC
3054#define FT_RETURNNO return S_ft_return_false(aTHX_ &PL_sv_no)
3055#define FT_RETURNUNDEF return S_ft_return_false(aTHX_ &PL_sv_undef)
3056#define FT_RETURNYES return S_ft_return_true(aTHX_ &PL_sv_yes)
8db8f6b6 3057
6f1401dc 3058#define tryAMAGICftest_MG(chr) STMT_START { \
d2f67720 3059 if ( (SvFLAGS(*PL_stack_sp) & (SVf_ROK|SVs_GMG)) \
8db8f6b6
FC
3060 && PL_op->op_flags & OPf_KIDS) { \
3061 OP *next = S_try_amagic_ftest(aTHX_ chr); \
3062 if (next) return next; \
3063 } \
6f1401dc
DM
3064 } STMT_END
3065
8db8f6b6 3066STATIC OP *
6f1401dc 3067S_try_amagic_ftest(pTHX_ char chr) {
d2f67720 3068 SV *const arg = *PL_stack_sp;
6f1401dc
DM
3069
3070 assert(chr != '?');
c5780028 3071 if (!(PL_op->op_private & OPpFT_STACKING)) SvGETMAGIC(arg);
6f1401dc 3072
d2f67720 3073 if (SvAMAGIC(arg))
6f1401dc
DM
3074 {
3075 const char tmpchr = chr;
6f1401dc
DM
3076 SV * const tmpsv = amagic_call(arg,
3077 newSVpvn_flags(&tmpchr, 1, SVs_TEMP),
3078 ftest_amg, AMGf_unary);
3079
3080 if (!tmpsv)
8db8f6b6 3081 return NULL;
6f1401dc 3082
48d023d6
NC
3083 return SvTRUE(tmpsv)
3084 ? S_ft_return_true(aTHX_ tmpsv) : S_ft_return_false(aTHX_ tmpsv);
6f1401dc 3085 }
8db8f6b6 3086 return NULL;
6f1401dc
DM
3087}
3088
3089
b1c05ba5
DM
3090/* also used for: pp_fteexec() pp_fteread() pp_ftewrite() pp_ftrexec()
3091 * pp_ftrwrite() */
3092
a0d0e21e
LW
3093PP(pp_ftrread)
3094{
9cad6237 3095 I32 result;
af9e49b4 3096 /* Not const, because things tweak this below. Not bool, because there's
f3574cc6 3097 no guarantee that OPpFT_ACCESS is <= CHAR_MAX */
af9e49b4
NC
3098#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
3099 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
3100 /* Giving some sort of initial value silences compilers. */
3101# ifdef R_OK
3102 int access_mode = R_OK;
3103# else
3104 int access_mode = 0;
3105# endif
5ff3f7a4 3106#else
af9e49b4
NC
3107 /* access_mode is never used, but leaving use_access in makes the
3108 conditional compiling below much clearer. */
3109 I32 use_access = 0;
5ff3f7a4 3110#endif
2dcac756 3111 Mode_t stat_mode = S_IRUSR;
a0d0e21e 3112
af9e49b4 3113 bool effective = FALSE;
07fe7c6a 3114 char opchar = '?';
af9e49b4 3115
7fb13887
BM
3116 switch (PL_op->op_type) {
3117 case OP_FTRREAD: opchar = 'R'; break;
3118 case OP_FTRWRITE: opchar = 'W'; break;
3119 case OP_FTREXEC: opchar = 'X'; break;
3120 case OP_FTEREAD: opchar = 'r'; break;
3121 case OP_FTEWRITE: opchar = 'w'; break;
3122 case OP_FTEEXEC: opchar = 'x'; break;
3123 }
6f1401dc 3124 tryAMAGICftest_MG(opchar);
7fb13887 3125
af9e49b4
NC
3126 switch (PL_op->op_type) {
3127 case OP_FTRREAD:
3128#if !(defined(HAS_ACCESS) && defined(R_OK))
3129 use_access = 0;
3130#endif
3131 break;
3132
3133 case OP_FTRWRITE:
5ff3f7a4 3134#if defined(HAS_ACCESS) && defined(W_OK)
af9e49b4 3135 access_mode = W_OK;
5ff3f7a4 3136#else
af9e49b4 3137 use_access = 0;
5ff3f7a4 3138#endif
af9e49b4
NC
3139 stat_mode = S_IWUSR;
3140 break;
a0d0e21e 3141
af9e49b4 3142 case OP_FTREXEC:
5ff3f7a4 3143#if defined(HAS_ACCESS) && defined(X_OK)
af9e49b4 3144 access_mode = X_OK;
5ff3f7a4 3145#else
af9e49b4 3146 use_access = 0;
5ff3f7a4 3147#endif
af9e49b4
NC
3148 stat_mode = S_IXUSR;
3149 break;
a0d0e21e 3150
af9e49b4 3151 case OP_FTEWRITE:
faee0e31 3152#ifdef PERL_EFF_ACCESS
af9e49b4 3153 access_mode = W_OK;
5ff3f7a4 3154#endif
af9e49b4 3155 stat_mode = S_IWUSR;
924ba076 3156 /* FALLTHROUGH */
a0d0e21e 3157
af9e49b4
NC
3158 case OP_FTEREAD:
3159#ifndef PERL_EFF_ACCESS
3160 use_access = 0;
3161#endif
3162 effective = TRUE;
3163 break;
3164
af9e49b4 3165 case OP_FTEEXEC:
faee0e31 3166#ifdef PERL_EFF_ACCESS
b376053d 3167 access_mode = X_OK;
5ff3f7a4 3168#else
af9e49b4 3169 use_access = 0;
5ff3f7a4 3170#endif
af9e49b4
NC
3171 stat_mode = S_IXUSR;
3172 effective = TRUE;
3173 break;
3174 }
a0d0e21e 3175
af9e49b4
NC
3176 if (use_access) {
3177#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
d2f67720 3178 const char *name = SvPV_nolen(*PL_stack_sp);
af9e49b4
NC
3179 if (effective) {
3180# ifdef PERL_EFF_ACCESS
3181 result = PERL_EFF_ACCESS(name, access_mode);
3182# else
3183 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
3184 OP_NAME(PL_op));
3185# endif
3186 }
3187 else {
3188# ifdef HAS_ACCESS
3189 result = access(name, access_mode);
3190# else
3191 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
3192# endif
3193 }
5ff3f7a4 3194 if (result == 0)
d2c4d2d1 3195 FT_RETURNYES;
5ff3f7a4 3196 if (result < 0)
d2c4d2d1
FC
3197 FT_RETURNUNDEF;
3198 FT_RETURNNO;
af9e49b4 3199#endif
22865c03 3200 }
af9e49b4 3201
40c852de 3202 result = my_stat_flags(0);
a0d0e21e 3203 if (result < 0)
8db8f6b6 3204 FT_RETURNUNDEF;
af9e49b4 3205 if (cando(stat_mode, effective, &PL_statcache))
8db8f6b6
FC
3206 FT_RETURNYES;
3207 FT_RETURNNO;
a0d0e21e
LW
3208}
3209
b1c05ba5
DM
3210
3211/* also used for: pp_ftatime() pp_ftctime() pp_ftmtime() pp_ftsize() */
3212
a0d0e21e
LW
3213PP(pp_ftis)
3214{
fbb0b3b3 3215 I32 result;
d7f0a2f4 3216 const int op_type = PL_op->op_type;
07fe7c6a 3217 char opchar = '?';
07fe7c6a
BM
3218
3219 switch (op_type) {
3220 case OP_FTIS: opchar = 'e'; break;
3221 case OP_FTSIZE: opchar = 's'; break;
3222 case OP_FTMTIME: opchar = 'M'; break;
3223 case OP_FTCTIME: opchar = 'C'; break;
3224 case OP_FTATIME: opchar = 'A'; break;
3225 }
6f1401dc 3226 tryAMAGICftest_MG(opchar);
07fe7c6a 3227
40c852de 3228 result = my_stat_flags(0);
a0d0e21e 3229 if (result < 0)
8db8f6b6 3230 FT_RETURNUNDEF;
d7f0a2f4 3231 if (op_type == OP_FTIS)
8db8f6b6 3232 FT_RETURNYES;
957b0e1d 3233 {
d7f0a2f4
NC
3234 /* You can't dTARGET inside OP_FTIS, because you'll get
3235 "panic: pad_sv po" - the op is not flagged to have a target. */
957b0e1d 3236 dTARGET;
d7f0a2f4 3237 switch (op_type) {
957b0e1d
NC
3238 case OP_FTSIZE:
3239#if Off_t_size > IVSIZE
8db8f6b6 3240 sv_setnv(TARG, (NV)PL_statcache.st_size);
957b0e1d 3241#else
8db8f6b6 3242 sv_setiv(TARG, (IV)PL_statcache.st_size);
957b0e1d
NC
3243#endif
3244 break;
3245 case OP_FTMTIME:
8db8f6b6
FC
3246 sv_setnv(TARG,
3247 ((NV)PL_basetime - PL_statcache.st_mtime) / 86400.0 );
957b0e1d
NC
3248 break;
3249 case OP_FTATIME:
8db8f6b6
FC
3250 sv_setnv(TARG,
3251 ((NV)PL_basetime - PL_statcache.st_atime) / 86400.0 );
957b0e1d
NC
3252 break;
3253 case OP_FTCTIME:
8db8f6b6
FC
3254 sv_setnv(TARG,
3255 ((NV)PL_basetime - PL_statcache.st_ctime) / 86400.0 );
957b0e1d
NC
3256 break;
3257 }
8db8f6b6 3258 SvSETMAGIC(TARG);
48d023d6
NC
3259 return SvTRUE_nomg(TARG)
3260 ? S_ft_return_true(aTHX_ TARG) : S_ft_return_false(aTHX_ TARG);
957b0e1d 3261 }
a0d0e21e
LW
3262}
3263
b1c05ba5
DM
3264
3265/* also used for: pp_ftblk() pp_ftchr() pp_ftdir() pp_fteowned()
3266 * pp_ftfile() pp_ftpipe() pp_ftsgid() pp_ftsock()
3267 * pp_ftsuid() pp_ftsvtx() pp_ftzero() */
3268
a0d0e21e
LW
3269PP(pp_ftrowned)
3270{
fbb0b3b3 3271 I32 result;
07fe7c6a 3272 char opchar = '?';
17ad201a 3273
7fb13887
BM
3274 switch (PL_op->op_type) {
3275 case OP_FTROWNED: opchar = 'O'; break;
3276 case OP_FTEOWNED: opchar = 'o'; break;
3277 case OP_FTZERO: opchar = 'z'; break;
3278 case OP_FTSOCK: opchar = 'S'; break;
3279 case OP_FTCHR: opchar = 'c'; break;
3280 case OP_FTBLK: opchar = 'b'; break;
3281 case OP_FTFILE: opchar = 'f'; break;
3282 case OP_FTDIR: opchar = 'd'; break;
3283 case OP_FTPIPE: opchar = 'p'; break;
3284 case OP_FTSUID: opchar = 'u'; break;
3285 case OP_FTSGID: opchar = 'g'; break;
3286 case OP_FTSVTX: opchar = 'k'; break;
3287 }
6f1401dc 3288 tryAMAGICftest_MG(opchar);
7fb13887 3289
17ad201a
NC
3290 /* I believe that all these three are likely to be defined on most every
3291 system these days. */
3292#ifndef S_ISUID
c410dd6a 3293 if(PL_op->op_type == OP_FTSUID) {
8db8f6b6 3294 FT_RETURNNO;
c410dd6a 3295 }
17ad201a
NC
3296#endif
3297#ifndef S_ISGID
c410dd6a 3298 if(PL_op->op_type == OP_FTSGID) {
8db8f6b6 3299 FT_RETURNNO;
c410dd6a 3300 }
17ad201a
NC
3301#endif
3302#ifndef S_ISVTX
c410dd6a 3303 if(PL_op->op_type == OP_FTSVTX) {
8db8f6b6 3304 FT_RETURNNO;
c410dd6a 3305 }
17ad201a
NC
3306#endif
3307
40c852de 3308 result = my_stat_flags(0);
a0d0e21e 3309 if (result < 0)
8db8f6b6 3310 FT_RETURNUNDEF;
f1cb2d48
NC
3311 switch (PL_op->op_type) {
3312 case OP_FTROWNED:
985213f2 3313 if (PL_statcache.st_uid == PerlProc_getuid())
8db8f6b6 3314 FT_RETURNYES;
f1cb2d48
NC
3315 break;
3316 case OP_FTEOWNED:
985213f2 3317 if (PL_statcache.st_uid == PerlProc_geteuid())
8db8f6b6 3318 FT_RETURNYES;
f1cb2d48
NC
3319 break;
3320 case OP_FTZERO:
3321 if (PL_statcache.st_size == 0)
8db8f6b6 3322 FT_RETURNYES;
f1cb2d48
NC
3323 break;
3324 case OP_FTSOCK:
3325 if (S_ISSOCK(PL_statcache.st_mode))
8db8f6b6 3326 FT_RETURNYES;
f1cb2d48
NC
3327 break;
3328 case OP_FTCHR:
3329 if (S_ISCHR(PL_statcache.st_mode))
8db8f6b6 3330 FT_RETURNYES;
f1cb2d48
NC
3331 break;
3332 case OP_FTBLK:
3333 if (S_ISBLK(PL_statcache.st_mode))
8db8f6b6 3334 FT_RETURNYES;
f1cb2d48
NC
3335 break;
3336 case OP_FTFILE:
3337 if (S_ISREG(PL_statcache.st_mode))
8db8f6b6 3338 FT_RETURNYES;
f1cb2d48
NC
3339 break;
3340 case OP_FTDIR:
3341 if (S_ISDIR(PL_statcache.st_mode))
8db8f6b6 3342 FT_RETURNYES;
f1cb2d48
NC
3343 break;
3344 case OP_FTPIPE:
3345 if (S_ISFIFO(PL_statcache.st_mode))
8db8f6b6 3346 FT_RETURNYES;
f1cb2d48 3347 break;
a0d0e21e 3348#ifdef S_ISUID
17ad201a
NC
3349 case OP_FTSUID:
3350 if (PL_statcache.st_mode & S_ISUID)
8db8f6b6 3351 FT_RETURNYES;
17ad201a 3352 break;
a0d0e21e 3353#endif
a0d0e21e 3354#ifdef S_ISGID
17ad201a
NC
3355 case OP_FTSGID:
3356 if (PL_statcache.st_mode & S_ISGID)
8db8f6b6 3357 FT_RETURNYES;
17ad201a
NC
3358 break;
3359#endif