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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__)
a0d0e21e
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;
1c23e2bd 300 const U8 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;
60e13354 323 SvPVCLEAR(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 464 if (SvROK(exsv) && !PL_warnhook)
147e3846 465 Perl_warn(aTHX_ "%" SVf, SVfARG(exsv));
3b7f69a5 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))
489c16bf 632 Perl_croak(aTHX_ "Cannot open %" HEKf " as a filehandle: it is already open as a dirhandle",
d0c0e7dd 633 HEKfARG(GvENAME_HEK(gv)));
abc718f2 634
ad64d0ec 635 mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
c4420975
AL		 636 if (mg) {
637 /* Method's args are same as ours ... */
638 /* ... except handle is replaced by the object */
3e0cb5de 639 return Perl_tied_method(aTHX_ SV_CONST(OPEN), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC		 640 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
641 sp - mark);
c4420975 642 }
4592e6ca
NIS		 643 }
644
a567e93b
NIS		 645 if (MARK < SP) {
646 sv = *++MARK;
647 }
648 else {
35a08ec7 649 sv = GvSVn(gv);
a567e93b
NIS		 650 }
651
5c144d81 652 tmps = SvPV_const(sv, len);
d5eb9a46 653 ok = do_open6(gv, tmps, len, NULL, MARK+1, (SP-MARK));
a567e93b
NIS		 654 SP = ORIGMARK;
655 if (ok)
3280af22
NIS		 656 PUSHi( (I32)PL_forkprocess );
657 else if (PL_forkprocess == 0) /* we are a new child */
a0d0e21e
LW		 658 PUSHi(0);
659 else
660 RETPUSHUNDEF;
661 RETURN;
662}
663
664PP(pp_close)
665{
20b7effb 666 dSP;
30901a8a
FC		 667 GV * const gv =
668 MAXARG == 0 || (!TOPs && !POPs) ? PL_defoutgv : MUTABLE_GV(POPs);
1d603a67 669
2addaaf3
NC		 670 if (MAXARG == 0)
671 EXTEND(SP, 1);
672
a79db61d
AL		 673 if (gv) {
674 IO * const io = GvIO(gv);
675 if (io) {
a5e1d062 676 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 677 if (mg) {
3e0cb5de 678 return tied_method0(SV_CONST(CLOSE), SP, MUTABLE_SV(io), mg);
a79db61d
AL		 679 }
680 }
1d603a67 681 }
54310121 682 PUSHs(boolSV(do_close(gv, TRUE)));
a0d0e21e
LW		 683 RETURN;
684}
685
686PP(pp_pipe_op)
687{
a0d0e21e 688#ifdef HAS_PIPE
9cad6237 689 dSP;
eb578fdb
KW		 690 IO *rstio;
691 IO *wstio;
a0d0e21e
LW		 692 int fd[2];
693
159b6efe
NC		 694 GV * const wgv = MUTABLE_GV(POPs);
695 GV * const rgv = MUTABLE_GV(POPs);
a0d0e21e 696
a0d0e21e 697 rstio = GvIOn(rgv);
a0d0e21e
LW		 698 if (IoIFP(rstio))
699 do_close(rgv, FALSE);
49225470
DD		 700
701 wstio = GvIOn(wgv);
a0d0e21e
LW		 702 if (IoIFP(wstio))
703 do_close(wgv, FALSE);
704
6ad3d225 705 if (PerlProc_pipe(fd) < 0)
a0d0e21e
LW		 706 goto badexit;
707
147e3846
KW		 708 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r" PIPE_OPEN_MODE);
709 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w" PIPE_OPEN_MODE);
b5ac89c3 710 IoOFP(rstio) = IoIFP(rstio);
a0d0e21e 711 IoIFP(wstio) = IoOFP(wstio);
50952442
JH		 712 IoTYPE(rstio) = IoTYPE_RDONLY;
713 IoTYPE(wstio) = IoTYPE_WRONLY;
a0d0e21e
LW		 714
715 if (!IoIFP(rstio) || !IoOFP(wstio)) {
a79db61d
AL		 716 if (IoIFP(rstio))
717 PerlIO_close(IoIFP(rstio));
718 else
719 PerlLIO_close(fd[0]);
720 if (IoOFP(wstio))
721 PerlIO_close(IoOFP(wstio));
722 else
723 PerlLIO_close(fd[1]);
a0d0e21e
LW		 724 goto badexit;
725 }
131d45a9 726#if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
375ed12a 727 /* ensure close-on-exec */
131d45a9
JH		 728 if ((fd[0] > PL_maxsysfd && fcntl(fd[0], F_SETFD, FD_CLOEXEC) < 0) ||
729 (fd[1] > PL_maxsysfd && fcntl(fd[1], F_SETFD, FD_CLOEXEC) < 0))
375ed12a 730 goto badexit;
4771b018 731#endif
a0d0e21e
LW		 732 RETPUSHYES;
733
7b52d656 734 badexit:
a0d0e21e
LW		 735 RETPUSHUNDEF;
736#else
cea2e8a9 737 DIE(aTHX_ PL_no_func, "pipe");
a0d0e21e
LW		 738#endif
739}
740
741PP(pp_fileno)
742{
20b7effb 743 dSP; dTARGET;
a0d0e21e
LW		 744 GV *gv;
745 IO *io;
760ac839 746 PerlIO *fp;
a5e1d062 747 const MAGIC *mg;
4592e6ca 748
a0d0e21e
LW		 749 if (MAXARG < 1)
750 RETPUSHUNDEF;
159b6efe 751 gv = MUTABLE_GV(POPs);
9c9f25b8 752 io = GvIO(gv);
4592e6ca 753
9c9f25b8 754 if (io
ad64d0ec 755 && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar)))
5b468f54 756 {
3e0cb5de 757 return tied_method0(SV_CONST(FILENO), SP, MUTABLE_SV(io), mg);
4592e6ca
NIS		 758 }
759
67f2cc75
AC		 760 if (io && IoDIRP(io)) {
761#if defined(HAS_DIRFD) || defined(HAS_DIR_DD_FD)
762 PUSHi(my_dirfd(IoDIRP(io)));
763 RETURN;
764#elif defined(ENOTSUP)
765 errno = ENOTSUP; /* Operation not supported */
766 RETPUSHUNDEF;
767#elif defined(EOPNOTSUPP)
768 errno = EOPNOTSUPP; /* Operation not supported on socket */
769 RETPUSHUNDEF;
770#else
771 errno = EINVAL; /* Invalid argument */
772 RETPUSHUNDEF;
773#endif
774 }
775
9c9f25b8 776 if (!io || !(fp = IoIFP(io))) {
c289d2f7
JH		 777 /* Can't do this because people seem to do things like
778 defined(fileno($foo)) to check whether $foo is a valid fh.
51087808
NC		 779
780 report_evil_fh(gv);
c289d2f7 781 */
a0d0e21e 782 RETPUSHUNDEF;
c289d2f7
JH		 783 }
784
760ac839 785 PUSHi(PerlIO_fileno(fp));
a0d0e21e
LW		 786 RETURN;
787}
788
789PP(pp_umask)
790{
27da23d5 791 dSP;
d7e492a4 792#ifdef HAS_UMASK
27da23d5 793 dTARGET;
761237fe 794 Mode_t anum;
a0d0e21e 795
58536d15 796 if (MAXARG < 1 || (!TOPs && !POPs)) {
b0b546b3
GA		 797 anum = PerlLIO_umask(022);
798 /* setting it to 022 between the two calls to umask avoids
799 * to have a window where the umask is set to 0 -- meaning
800 * that another thread could create world-writeable files. */
801 if (anum != 022)
802 (void)PerlLIO_umask(anum);
a0d0e21e
LW		 803 }
804 else
6ad3d225 805 anum = PerlLIO_umask(POPi);
a0d0e21e
LW		 806 TAINT_PROPER("umask");
807 XPUSHi(anum);
808#else
a0288114 809 /* Only DIE if trying to restrict permissions on "user" (self).
eec2d3df
GS		 810 * Otherwise it's harmless and more useful to just return undef
811 * since 'group' and 'other' concepts probably don't exist here. */
58536d15 812 if (MAXARG >= 1 && (TOPs||POPs) && (POPi & 0700))
cea2e8a9 813 DIE(aTHX_ "umask not implemented");
6b88bc9c 814 XPUSHs(&PL_sv_undef);
a0d0e21e
LW		 815#endif
816 RETURN;
817}
818
819PP(pp_binmode)
820{
20b7effb 821 dSP;
a0d0e21e
LW		 822 GV *gv;
823 IO *io;
760ac839 824 PerlIO *fp;
a0714e2c 825 SV *discp = NULL;
a0d0e21e
LW		 826
827 if (MAXARG < 1)
828 RETPUSHUNDEF;
60382766 829 if (MAXARG > 1) {
16fe6d59 830 discp = POPs;
60382766 831 }
a0d0e21e 832
159b6efe 833 gv = MUTABLE_GV(POPs);
9c9f25b8 834 io = GvIO(gv);
4592e6ca 835
9c9f25b8 836 if (io) {
a5e1d062 837 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 838 if (mg) {
bc0c81ca
NC		 839 /* This takes advantage of the implementation of the varargs
840 function, which I don't think that the optimiser will be able to
841 figure out. Although, as it's a static function, in theory it
842 could. */
3e0cb5de 843 return Perl_tied_method(aTHX_ SV_CONST(BINMODE), SP, MUTABLE_SV(io), mg,
d682515d
NC		 844 G_SCALAR|TIED_METHOD_MORTALIZE_NOT_NEEDED,
845 discp ? 1 : 0, discp);
a79db61d 846 }
4592e6ca 847 }
a0d0e21e 848
9c9f25b8 849 if (!io || !(fp = IoIFP(io))) {
51087808 850 report_evil_fh(gv);
b5fe5ca2 851 SETERRNO(EBADF,RMS_IFI);
50f846a7
SC		 852 RETPUSHUNDEF;
853 }
a0d0e21e 854
40d98b49 855 PUTBACK;
f0a78170 856 {
a79b25b7
VP		 857 STRLEN len = 0;
858 const char *d = NULL;
859 int mode;
860 if (discp)
861 d = SvPV_const(discp, len);
862 mode = mode_from_discipline(d, len);
f0a78170
NC		 863 if (PerlIO_binmode(aTHX_ fp, IoTYPE(io), mode, d)) {
864 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
865 if (!PerlIO_binmode(aTHX_ IoOFP(io), IoTYPE(io), mode, d)) {
866 SPAGAIN;
867 RETPUSHUNDEF;
868 }
869 }
870 SPAGAIN;
871 RETPUSHYES;
872 }
873 else {
874 SPAGAIN;
875 RETPUSHUNDEF;
38af81ff 876 }
40d98b49 877 }
a0d0e21e
LW		 878}
879
880PP(pp_tie)
881{
20b7effb 882 dSP; dMARK;
a0d0e21e 883 HV* stash;
07822e36 884 GV *gv = NULL;
a0d0e21e 885 SV *sv;
1df70142 886 const I32 markoff = MARK - PL_stack_base;
e1ec3a88 887 const char *methname;
14befaf4 888 int how = PERL_MAGIC_tied;
e336de0d 889 U32 items;
c4420975 890 SV *varsv = *++MARK;
a0d0e21e 891
6b05c17a
NIS		 892 switch(SvTYPE(varsv)) {
893 case SVt_PVHV:
aec0c0cc
FC		 894 {
895 HE *entry;
6b05c17a 896 methname = "TIEHASH";
aec0c0cc
FC		 897 if (HvLAZYDEL(varsv) && (entry = HvEITER((HV *)varsv))) {
898 HvLAZYDEL_off(varsv);
899 hv_free_ent((HV *)varsv, entry);
900 }
85fbaab2 901 HvEITER_set(MUTABLE_HV(varsv), 0);
6b05c17a 902 break;
aec0c0cc 903 }
6b05c17a
NIS		 904 case SVt_PVAV:
905 methname = "TIEARRAY";
ce65bc73
FC		 906 if (!AvREAL(varsv)) {
907 if (!AvREIFY(varsv))
908 Perl_croak(aTHX_ "Cannot tie unreifiable array");
909 av_clear((AV *)varsv);
910 AvREIFY_off(varsv);
911 AvREAL_on(varsv);
912 }
6b05c17a
NIS		 913 break;
914 case SVt_PVGV:
13be902c 915 case SVt_PVLV:
8bb5f786 916 if (isGV_with_GP(varsv) && !SvFAKE(varsv)) {
6e592b3a
BM		 917 methname = "TIEHANDLE";
918 how = PERL_MAGIC_tiedscalar;
919 /* For tied filehandles, we apply tiedscalar magic to the IO
920 slot of the GP rather than the GV itself. AMS 20010812 */
921 if (!GvIOp(varsv))
922 GvIOp(varsv) = newIO();
ad64d0ec 923 varsv = MUTABLE_SV(GvIOp(varsv));
6e592b3a
BM		 924 break;
925 }
13733cde
FC		 926 if (SvTYPE(varsv) == SVt_PVLV && LvTYPE(varsv) == 'y') {
927 vivify_defelem(varsv);
928 varsv = LvTARG(varsv);
929 }
924ba076 930 /* FALLTHROUGH */
6b05c17a
NIS		 931 default:
932 methname = "TIESCALAR";
14befaf4 933 how = PERL_MAGIC_tiedscalar;
6b05c17a
NIS		 934 break;
935 }
e336de0d 936 items = SP - MARK++;
a91d1d42 937 if (sv_isobject(*MARK)) { /* Calls GET magic. */
d343c3ef 938 ENTER_with_name("call_TIE");
e788e7d3 939 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 940 PUSHMARK(SP);
eb160463 941 EXTEND(SP,(I32)items);
e336de0d
GS		 942 while (items--)
943 PUSHs(*MARK++);
944 PUTBACK;
864dbfa3 945 call_method(methname, G_SCALAR);
301e8125 946 }
6b05c17a 947 else {
086d2913
NC		 948 /* Can't use call_method here, else this: fileno FOO; tie @a, "FOO"
949 * will attempt to invoke IO::File::TIEARRAY, with (best case) the
950 * wrong error message, and worse case, supreme action at a distance.
951 * (Sorry obfuscation writers. You're not going to be given this one.)
6b05c17a 952 */
4886938f 953 stash = gv_stashsv(*MARK, 0);
0b077c88 954 if (!stash) {
32207c63
AC		 955 if (SvROK(*MARK))
956 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%" SVf "\"",
957 methname, SVfARG(*MARK));
958 else if (isGV(*MARK)) {
959 /* If the glob doesn't name an existing package, using
960 * SVfARG(*MARK) would yield "*Foo::Bar" or *main::Foo. So
961 * generate the name for the error message explicitly. */
7594f18f 962 SV *stashname = sv_2mortal(newSV(0));
32207c63
AC		 963 gv_fullname4(stashname, (GV *) *MARK, NULL, FALSE);
964 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%" SVf "\"",
965 methname, SVfARG(stashname));
966 }
967 else {
968 SV *stashname = !SvPOK(*MARK) ? &PL_sv_no
969 : SvCUR(*MARK) ? *MARK
970 : sv_2mortal(newSVpvs("main"));
971 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%" SVf "\""
972 " (perhaps you forgot to load \"%" SVf "\"?)",
973 methname, SVfARG(stashname), SVfARG(stashname));
0b077c88 974 }
0b077c88
DIM		 975 }
976 else if (!(gv = gv_fetchmethod(stash, methname))) {
977 /* The effective name can only be NULL for stashes that have
978 * been deleted from the symbol table, which this one can't
979 * be, since we just looked it up by name.
980 */
147e3846 981 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%" HEKf "\"",
0b077c88
DIM		 982 methname, HvENAME_HEK_NN(stash));
983 }
d343c3ef 984 ENTER_with_name("call_TIE");
e788e7d3 985 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 986 PUSHMARK(SP);
eb160463 987 EXTEND(SP,(I32)items);
e336de0d
GS		 988 while (items--)
989 PUSHs(*MARK++);
990 PUTBACK;
ad64d0ec 991 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
6b05c17a 992 }
a0d0e21e
LW		 993 SPAGAIN;
994
995 sv = TOPs;
d3acc0f7 996 POPSTACK;
a0d0e21e 997 if (sv_isobject(sv)) {
33c27489 998 sv_unmagic(varsv, how);
ae21d580 999 /* Croak if a self-tie on an aggregate is attempted. */
b881518d 1000 if (varsv == SvRV(sv) &&
d87ebaca
YST		 1001 (SvTYPE(varsv) == SVt_PVAV ||
1002 SvTYPE(varsv) == SVt_PVHV))
ae21d580
JH		 1003 Perl_croak(aTHX_
1004 "Self-ties of arrays and hashes are not supported");
a0714e2c 1005 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
a0d0e21e 1006 }
d343c3ef 1007 LEAVE_with_name("call_TIE");
3280af22 1008 SP = PL_stack_base + markoff;
a0d0e21e
LW		 1009 PUSHs(sv);
1010 RETURN;
1011}
1012
b1c05ba5
DM		 1013
1014/* also used for: pp_dbmclose() */
1015
a0d0e21e
LW		 1016PP(pp_untie)
1017{
20b7effb 1018 dSP;
5b468f54 1019 MAGIC *mg;
33c27489 1020 SV *sv = POPs;
1df70142 1021 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 1022 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
55497cff 1023
ca0d4ed9 1024 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
5b468f54
AMS		 1025 RETPUSHYES;
1026
13733cde
FC		 1027 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y' &&
1028 !(sv = defelem_target(sv, NULL))) RETPUSHUNDEF;
1029
65eba18f 1030 if ((mg = SvTIED_mg(sv, how))) {
1b6737cc 1031 SV * const obj = SvRV(SvTIED_obj(sv, mg));
fa2b88e0 1032 if (obj) {
c4420975 1033 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
0bd48802 1034 CV *cv;
c4420975 1035 if (gv && isGV(gv) && (cv = GvCV(gv))) {
fa2b88e0 1036 PUSHMARK(SP);
c33ef3ac 1037 PUSHs(SvTIED_obj(MUTABLE_SV(gv), mg));
6e449a3a 1038 mXPUSHi(SvREFCNT(obj) - 1);
fa2b88e0 1039 PUTBACK;
d343c3ef 1040 ENTER_with_name("call_UNTIE");
ad64d0ec 1041 call_sv(MUTABLE_SV(cv), G_VOID);
d343c3ef 1042 LEAVE_with_name("call_UNTIE");
fa2b88e0
JS		 1043 SPAGAIN;
1044 }
a2a5de95
NC		 1045 else if (mg && SvREFCNT(obj) > 1) {
1046 Perl_ck_warner(aTHX_ packWARN(WARN_UNTIE),
147e3846 1047 "untie attempted while %" UVuf " inner references still exist",
a2a5de95 1048 (UV)SvREFCNT(obj) - 1 ) ;
c4420975 1049 }
cbdc8872
PP		 1050 }
1051 }
38193a09 1052 sv_unmagic(sv, how) ;
55497cff 1053 RETPUSHYES;
a0d0e21e
LW		 1054}
1055
c07a80fd
PP		 1056PP(pp_tied)
1057{
39644a26 1058 dSP;
1b6737cc 1059 const MAGIC *mg;
b3cf4821 1060 dTOPss;
1df70142 1061 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 1062 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
5b468f54 1063
4be76e1f 1064 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
b3cf4821 1065 goto ret_undef;
c07a80fd 1066
13733cde 1067 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y' &&
b3cf4821 1068 !(sv = defelem_target(sv, NULL))) goto ret_undef;
13733cde 1069
155aba94 1070 if ((mg = SvTIED_mg(sv, how))) {
b3cf4821
DD		 1071 SETs(SvTIED_obj(sv, mg));
1072 return NORMAL; /* PUTBACK not needed, pp_tied never moves SP */
c07a80fd 1073 }
b3cf4821
DD		 1074 ret_undef:
1075 SETs(&PL_sv_undef);
1076 return NORMAL;
c07a80fd
PP		 1077}
1078
a0d0e21e
LW		 1079PP(pp_dbmopen)
1080{
20b7effb 1081 dSP;
a0d0e21e
LW		 1082 dPOPPOPssrl;
1083 HV* stash;
07822e36 1084 GV *gv = NULL;
a0d0e21e 1085
85fbaab2 1086 HV * const hv = MUTABLE_HV(POPs);
84bafc02 1087 SV * const sv = newSVpvs_flags("AnyDBM_File", SVs_TEMP);
da51bb9b 1088 stash = gv_stashsv(sv, 0);
8ebc5c01 1089 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
a0d0e21e 1090 PUTBACK;
864dbfa3 1091 require_pv("AnyDBM_File.pm");
a0d0e21e 1092 SPAGAIN;
eff494dd 1093 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH")))
cea2e8a9 1094 DIE(aTHX_ "No dbm on this machine");
a0d0e21e
LW		 1095 }
1096
57d3b86d 1097 ENTER;
924508f0 1098 PUSHMARK(SP);
6b05c17a 1099
924508f0 1100 EXTEND(SP, 5);
a0d0e21e
LW		 1101 PUSHs(sv);
1102 PUSHs(left);
1103 if (SvIV(right))
6e449a3a 1104 mPUSHu(O_RDWR|O_CREAT);
a0d0e21e 1105 else
480e0d3c 1106 {
6e449a3a 1107 mPUSHu(O_RDWR);
480e0d3c
FC		 1108 if (!SvOK(right)) right = &PL_sv_no;
1109 }
a0d0e21e 1110 PUSHs(right);
57d3b86d 1111 PUTBACK;
ad64d0ec 1112 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
a0d0e21e
LW		 1113 SPAGAIN;
1114
1115 if (!sv_isobject(TOPs)) {
924508f0
GS		 1116 SP--;
1117 PUSHMARK(SP);
a0d0e21e
LW		 1118 PUSHs(sv);
1119 PUSHs(left);
6e449a3a 1120 mPUSHu(O_RDONLY);
a0d0e21e 1121 PUSHs(right);
a0d0e21e 1122 PUTBACK;
ad64d0ec 1123 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
a0d0e21e 1124 SPAGAIN;
4b523e79
DD		 1125 if (sv_isobject(TOPs))
1126 goto retie;
a0d0e21e 1127 }
4b523e79
DD		 1128 else {
1129 retie:
ad64d0ec
NC		 1130 sv_unmagic(MUTABLE_SV(hv), PERL_MAGIC_tied);
1131 sv_magic(MUTABLE_SV(hv), TOPs, PERL_MAGIC_tied, NULL, 0);
6b05c17a 1132 }
a0d0e21e
LW		 1133 LEAVE;
1134 RETURN;
1135}
1136
a0d0e21e
LW		 1137PP(pp_sselect)
1138{
a0d0e21e 1139#ifdef HAS_SELECT
20b7effb 1140 dSP; dTARGET;
eb578fdb
KW		 1141 I32 i;
1142 I32 j;
1143 char *s;
1144 SV *sv;
65202027 1145 NV value;
a0d0e21e
LW		 1146 I32 maxlen = 0;
1147 I32 nfound;
1148 struct timeval timebuf;
1149 struct timeval *tbuf = &timebuf;
1150 I32 growsize;
1151 char *fd_sets[4];
1152#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1153 I32 masksize;
1154 I32 offset;
1155 I32 k;
1156
1157# if BYTEORDER & 0xf0000
1158# define ORDERBYTE (0x88888888 - BYTEORDER)
1159# else
1160# define ORDERBYTE (0x4444 - BYTEORDER)
1161# endif
1162
1163#endif
1164
1165 SP -= 4;
1166 for (i = 1; i <= 3; i++) {
c4420975 1167 SV * const sv = SP[i];
9d6d5a79 1168 SvGETMAGIC(sv);
15547071
GA		 1169 if (!SvOK(sv))
1170 continue;
ba3062ae
FC		 1171 if (SvREADONLY(sv)) {
1172 if (!(SvPOK(sv) && SvCUR(sv) == 0))
cb077ed2 1173 Perl_croak_no_modify();
ba3062ae
FC		 1174 }
1175 else if (SvIsCOW(sv)) sv_force_normal_flags(sv, 0);
4ef2275c 1176 if (!SvPOK(sv)) {
9d6d5a79
FC		 1177 if (!SvPOKp(sv))
1178 Perl_ck_warner(aTHX_ packWARN(WARN_MISC),
1179 "Non-string passed as bitmask");
1180 SvPV_force_nomg_nolen(sv); /* force string conversion */
4ef2275c 1181 }
729c079f 1182 j = SvCUR(sv);
a0d0e21e
LW		 1183 if (maxlen < j)
1184 maxlen = j;
1185 }
1186
5ff3f7a4 1187/* little endians can use vecs directly */
e366b469 1188#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
5ff3f7a4 1189# ifdef NFDBITS
a0d0e21e 1190
5ff3f7a4
GS		 1191# ifndef NBBY
1192# define NBBY 8
1193# endif
a0d0e21e
LW		 1194
1195 masksize = NFDBITS / NBBY;
5ff3f7a4 1196# else
a0d0e21e 1197 masksize = sizeof(long); /* documented int, everyone seems to use long */
5ff3f7a4 1198# endif
a0d0e21e
LW		 1199 Zero(&fd_sets[0], 4, char*);
1200#endif
1201
ad517f75
MHM		 1202# if SELECT_MIN_BITS == 1
1203 growsize = sizeof(fd_set);
1204# else
1205# if defined(__GLIBC__) && defined(__FD_SETSIZE)
1206# undef SELECT_MIN_BITS
1207# define SELECT_MIN_BITS __FD_SETSIZE
1208# endif
e366b469
PG		 1209 /* If SELECT_MIN_BITS is greater than one we most probably will want
1210 * to align the sizes with SELECT_MIN_BITS/8 because for example
1211 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
f05550c0 1212 * UNIX, Solaris, Darwin) the smallest quantum select() operates
e366b469
PG		 1213 * on (sets/tests/clears bits) is 32 bits. */
1214 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
e366b469
PG		 1215# endif
1216
a0d0e21e 1217 sv = SP[4];
90eaaf02 1218 SvGETMAGIC(sv);
a0d0e21e 1219 if (SvOK(sv)) {
90eaaf02 1220 value = SvNV_nomg(sv);
a0d0e21e
LW		 1221 if (value < 0.0)
1222 value = 0.0;
1223 timebuf.tv_sec = (long)value;
65202027 1224 value -= (NV)timebuf.tv_sec;
a0d0e21e
LW		 1225 timebuf.tv_usec = (long)(value * 1000000.0);
1226 }
1227 else
4608196e 1228 tbuf = NULL;
a0d0e21e
LW		 1229
1230 for (i = 1; i <= 3; i++) {
1231 sv = SP[i];
15547071 1232 if (!SvOK(sv) || SvCUR(sv) == 0) {
a0d0e21e
LW		 1233 fd_sets[i] = 0;
1234 continue;
1235 }
4ef2275c 1236 assert(SvPOK(sv));
a0d0e21e
LW		 1237 j = SvLEN(sv);
1238 if (j < growsize) {
1239 Sv_Grow(sv, growsize);
a0d0e21e 1240 }
c07a80fd
PP		 1241 j = SvCUR(sv);
1242 s = SvPVX(sv) + j;
1243 while (++j <= growsize) {
1244 *s++ = '\0';
1245 }
1246
a0d0e21e
LW		 1247#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1248 s = SvPVX(sv);
a02a5408 1249 Newx(fd_sets[i], growsize, char);
a0d0e21e
LW		 1250 for (offset = 0; offset < growsize; offset += masksize) {
1251 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1252 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1253 }
1254#else
1255 fd_sets[i] = SvPVX(sv);
1256#endif
1257 }
1258
dc4c69d9
JH		 1259#ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1260 /* Can't make just the (void*) conditional because that would be
1261 * cpp #if within cpp macro, and not all compilers like that. */
1262 nfound = PerlSock_select(
1263 maxlen * 8,
1264 (Select_fd_set_t) fd_sets[1],
1265 (Select_fd_set_t) fd_sets[2],
1266 (Select_fd_set_t) fd_sets[3],
1267 (void*) tbuf); /* Workaround for compiler bug. */
1268#else
6ad3d225 1269 nfound = PerlSock_select(
a0d0e21e
LW		 1270 maxlen * 8,
1271 (Select_fd_set_t) fd_sets[1],
1272 (Select_fd_set_t) fd_sets[2],
1273 (Select_fd_set_t) fd_sets[3],
1274 tbuf);
dc4c69d9 1275#endif
a0d0e21e
LW		 1276 for (i = 1; i <= 3; i++) {
1277 if (fd_sets[i]) {
1278 sv = SP[i];
1279#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1280 s = SvPVX(sv);
1281 for (offset = 0; offset < growsize; offset += masksize) {
1282 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1283 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1284 }
1285 Safefree(fd_sets[i]);
1286#endif
1287 SvSETMAGIC(sv);
1288 }
1289 }
1290
4189264e 1291 PUSHi(nfound);
82334630 1292 if (GIMME_V == G_ARRAY && tbuf) {
65202027
DS		 1293 value = (NV)(timebuf.tv_sec) +
1294 (NV)(timebuf.tv_usec) / 1000000.0;
6e449a3a 1295 mPUSHn(value);
a0d0e21e
LW		 1296 }
1297 RETURN;
1298#else
cea2e8a9 1299 DIE(aTHX_ "select not implemented");
a0d0e21e
LW		 1300#endif
1301}
1302
8226a3d7 1303/*
dcccc8ff
KW		 1304
1305=head1 GV Functions
1306
8226a3d7
NC		 1307=for apidoc setdefout
1308
796b6530
KW		 1309Sets C<PL_defoutgv>, the default file handle for output, to the passed in
1310typeglob. As C<PL_defoutgv> "owns" a reference on its typeglob, the reference
8226a3d7 1311count of the passed in typeglob is increased by one, and the reference count
796b6530 1312of the typeglob that C<PL_defoutgv> points to is decreased by one.
8226a3d7
NC		 1313
1314=cut
1315*/
1316
4633a7c4 1317void
864dbfa3 1318Perl_setdefout(pTHX_ GV *gv)
4633a7c4 1319{
656457d0
DM		 1320 GV *oldgv = PL_defoutgv;
1321
9a9bb270 1322 PERL_ARGS_ASSERT_SETDEFOUT;
656457d0 1323
9a9bb270 1324 SvREFCNT_inc_simple_void_NN(gv);
3280af22 1325 PL_defoutgv = gv;
656457d0 1326 SvREFCNT_dec(oldgv);
4633a7c4
LW		 1327}
1328
a0d0e21e
LW		 1329PP(pp_select)
1330{
20b7effb 1331 dSP; dTARGET;
4633a7c4 1332 HV *hv;
159b6efe 1333 GV * const newdefout = (PL_op->op_private > 0) ? (MUTABLE_GV(POPs)) : NULL;
099be4f1 1334 GV * egv = GvEGVx(PL_defoutgv);
0df2568b 1335 GV * const *gvp;
4633a7c4 1336
4633a7c4 1337 if (!egv)
3280af22 1338 egv = PL_defoutgv;
099be4f1 1339 hv = isGV_with_GP(egv) ? GvSTASH(egv) : NULL;
0df2568b 1340 gvp = hv && HvENAME(hv)
204263bc
FC		 1341 ? (GV**)hv_fetch(hv, GvNAME(egv), HEK_UTF8(GvNAME_HEK(egv)) ? -GvNAMELEN(egv) : GvNAMELEN(egv), FALSE)
1342 : NULL;
0df2568b 1343 if (gvp && *gvp == egv) {
bd61b366 1344 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
f86702cc 1345 XPUSHTARG;
0df2568b
FC		 1346 }
1347 else {
ad64d0ec 1348 mXPUSHs(newRV(MUTABLE_SV(egv)));
4633a7c4
LW		 1349 }
1350
1351 if (newdefout) {
ded8aa31
GS		 1352 if (!GvIO(newdefout))
1353 gv_IOadd(newdefout);
4633a7c4
LW		 1354 setdefout(newdefout);
1355 }
1356
a0d0e21e
LW		 1357 RETURN;
1358}
1359
1360PP(pp_getc)
1361{
20b7effb 1362 dSP; dTARGET;
30901a8a
FC		 1363 GV * const gv =
1364 MAXARG==0 || (!TOPs && !POPs) ? PL_stdingv : MUTABLE_GV(POPs);
9c9f25b8 1365 IO *const io = GvIO(gv);
2ae324a7 1366
ac3697cd
NC		 1367 if (MAXARG == 0)
1368 EXTEND(SP, 1);
1369
9c9f25b8 1370 if (io) {
a5e1d062 1371 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1372 if (mg) {
1c23e2bd 1373 const U8 gimme = GIMME_V;
3e0cb5de 1374 Perl_tied_method(aTHX_ SV_CONST(GETC), SP, MUTABLE_SV(io), mg, gimme, 0);
0240605e
NC		 1375 if (gimme == G_SCALAR) {
1376 SPAGAIN;
a79db61d 1377 SvSetMagicSV_nosteal(TARG, TOPs);
0240605e
NC		 1378 }
1379 return NORMAL;
a79db61d 1380 }
2ae324a7 1381 }
90133b69 1382 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
51087808 1383 if (!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
831e4cc3 1384 report_evil_fh(gv);
b5fe5ca2 1385 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1386 RETPUSHUNDEF;
90133b69 1387 }
bbce6d69 1388 TAINT;
76f68e9b 1389 sv_setpvs(TARG, " ");
9bc64814 1390 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
7d59b7e4
NIS		 1391 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1392 /* Find out how many bytes the char needs */
aa07b2f6 1393 Size_t len = UTF8SKIP(SvPVX_const(TARG));
7d59b7e4
NIS		 1394 if (len > 1) {
1395 SvGROW(TARG,len+1);
1396 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1397 SvCUR_set(TARG,1+len);
1398 }
1399 SvUTF8_on(TARG);
1400 }
88c34251 1401 else SvUTF8_off(TARG);
a0d0e21e
LW		 1402 PUSHTARG;
1403 RETURN;
1404}
1405
76e3520e 1406STATIC OP *
cea2e8a9 1407S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
a0d0e21e 1408{
eb578fdb 1409 PERL_CONTEXT *cx;
1c23e2bd 1410 const U8 gimme = GIMME_V;
a0d0e21e 1411
7918f24d
NC		 1412 PERL_ARGS_ASSERT_DOFORM;
1413
535e48ea 1414 if (CvCLONE(cv))
7b190374
NC		 1415 cv = MUTABLE_CV(sv_2mortal(MUTABLE_SV(cv_clone(cv))));
1416
ed8ff0f3 1417 cx = cx_pushblock(CXt_FORMAT, gimme, PL_stack_sp, PL_savestack_ix);
6a7d52cc 1418 cx_pushformat(cx, cv, retop, gv);
d2af2719 1419 if (CvDEPTH(cv) >= 2)
f32c7e86 1420 pad_push(CvPADLIST(cv), CvDEPTH(cv));
f32c7e86 1421 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), CvDEPTH(cv));
a0d0e21e 1422
4633a7c4 1423 setdefout(gv); /* locally select filehandle so $% et al work */
a0d0e21e
LW		 1424 return CvSTART(cv);
1425}
1426
1427PP(pp_enterwrite)
1428{
39644a26 1429 dSP;
eb578fdb
KW		 1430 GV *gv;
1431 IO *io;
a0d0e21e 1432 GV *fgv;
07822e36 1433 CV *cv = NULL;
a0d0e21e 1434
2addaaf3 1435 if (MAXARG == 0) {
2addaaf3 1436 EXTEND(SP, 1);
49225470 1437 gv = PL_defoutgv;
2addaaf3 1438 }
a0d0e21e 1439 else {
159b6efe 1440 gv = MUTABLE_GV(POPs);
a0d0e21e 1441 if (!gv)
3280af22 1442 gv = PL_defoutgv;
a0d0e21e 1443 }
a0d0e21e
LW		 1444 io = GvIO(gv);
1445 if (!io) {
1446 RETPUSHNO;
1447 }
1448 if (IoFMT_GV(io))
1449 fgv = IoFMT_GV(io);
1450 else
1451 fgv = gv;
1452
2d1ebc9b 1453 assert(fgv);
a79db61d 1454
a0d0e21e 1455 cv = GvFORM(fgv);
a0d0e21e 1456 if (!cv) {
19742f39 1457 SV * const tmpsv = sv_newmortal();
f4a7049d 1458 gv_efullname4(tmpsv, fgv, NULL, FALSE);
147e3846 1459 DIE(aTHX_ "Undefined format \"%" SVf "\" called", SVfARG(tmpsv));
a0d0e21e 1460 }
44a8e56a 1461 IoFLAGS(io) &= ~IOf_DIDTOP;
8e4ecf23 1462 RETURNOP(doform(cv,gv,PL_op->op_next));
a0d0e21e
LW		 1463}
1464
1465PP(pp_leavewrite)
1466{
20b7effb 1467 dSP;
4ebe6e95 1468 GV * const gv = CX_CUR()->blk_format.gv;
eb578fdb 1469 IO * const io = GvIOp(gv);
8b8cacda 1470 PerlIO *ofp;
760ac839 1471 PerlIO *fp;
eb578fdb 1472 PERL_CONTEXT *cx;
8f89e5a9 1473 OP *retop;
617a4f41 1474 bool is_return = cBOOL(PL_op->op_type == OP_RETURN);
a0d0e21e 1475
617a4f41 1476 if (is_return || !io || !(ofp = IoOFP(io)))
8b8cacda 1477 goto forget_top;
1478
760ac839 1479 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1480 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
8b8cacda 1481
3280af22
NIS		 1482 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1483 PL_formtarget != PL_toptarget)
a0d0e21e 1484 {
4633a7c4
LW		 1485 GV *fgv;
1486 CV *cv;
a0d0e21e
LW		 1487 if (!IoTOP_GV(io)) {
1488 GV *topgv;
a0d0e21e
LW		 1489
1490 if (!IoTOP_NAME(io)) {
1b6737cc 1491 SV *topname;
a0d0e21e
LW		 1492 if (!IoFMT_NAME(io))
1493 IoFMT_NAME(io) = savepv(GvNAME(gv));
147e3846 1494 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%" HEKf "_TOP",
d0c0e7dd 1495 HEKfARG(GvNAME_HEK(gv))));
f776e3cd 1496 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
748a9306 1497 if ((topgv && GvFORM(topgv)) ||
fafc274c 1498 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
2e0de35c 1499 IoTOP_NAME(io) = savesvpv(topname);
a0d0e21e 1500 else
89529cee 1501 IoTOP_NAME(io) = savepvs("top");
a0d0e21e 1502 }
f776e3cd 1503 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
a0d0e21e 1504 if (!topgv || !GvFORM(topgv)) {
b929a54b 1505 IoLINES_LEFT(io) = IoPAGE_LEN(io);
a0d0e21e
LW		 1506 goto forget_top;
1507 }
1508 IoTOP_GV(io) = topgv;
1509 }
748a9306
LW		 1510 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1511 I32 lines = IoLINES_LEFT(io);
504618e9 1512 const char *s = SvPVX_const(PL_formtarget);
8e07c86e
AD		 1513 if (lines <= 0) /* Yow, header didn't even fit!!! */
1514 goto forget_top;
748a9306
LW		 1515 while (lines-- > 0) {
1516 s = strchr(s, '\n');
1517 if (!s)
1518 break;
1519 s++;
1520 }
1521 if (s) {
f54cb97a 1522 const STRLEN save = SvCUR(PL_formtarget);
aa07b2f6 1523 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
d75029d0
NIS		 1524 do_print(PL_formtarget, ofp);
1525 SvCUR_set(PL_formtarget, save);
3280af22
NIS		 1526 sv_chop(PL_formtarget, s);
1527 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW		 1528 }
1529 }
a0d0e21e 1530 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
f6dfc736 1531 do_print(GvSV(gv_fetchpvs("\f", GV_ADD, SVt_PV)), ofp);
a0d0e21e
LW		 1532 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1533 IoPAGE(io)++;
3280af22 1534 PL_formtarget = PL_toptarget;
748a9306 1535 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4 1536 fgv = IoTOP_GV(io);
636013b3 1537 assert(fgv); /* IoTOP_GV(io) should have been set above */
4633a7c4 1538 cv = GvFORM(fgv);
1df70142
AL		 1539 if (!cv) {
1540 SV * const sv = sv_newmortal();
bd61b366 1541 gv_efullname4(sv, fgv, NULL, FALSE);
147e3846 1542 DIE(aTHX_ "Undefined top format \"%" SVf "\" called", SVfARG(sv));
4633a7c4 1543 }
43cd5cb7 1544 return doform(cv, gv, PL_op);
a0d0e21e
LW		 1545 }
1546
1547 forget_top:
4ebe6e95 1548 cx = CX_CUR();
4df352a8
DM		 1549 assert(CxTYPE(cx) == CXt_FORMAT);
1550 SP = PL_stack_base + cx->blk_oldsp; /* ignore retval of formline */
2f450c1b 1551 CX_LEAVE_SCOPE(cx);
6a7d52cc 1552 cx_popformat(cx);
ed8ff0f3 1553 cx_popblock(cx);
8f89e5a9 1554 retop = cx->blk_sub.retop;
5da525e9 1555 CX_POP(cx);
a0d0e21e 1556
617a4f41
DM		 1557 if (is_return)
1558 /* XXX the semantics of doing 'return' in a format aren't documented.
1559 * Currently we ignore any args to 'return' and just return
1560 * a single undef in both scalar and list contexts
1561 */
1562 PUSHs(&PL_sv_undef);
1563 else if (!io || !(fp = IoOFP(io))) {
c782dc1d 1564 if (io && IoIFP(io))
7716c5c5 1565 report_wrongway_fh(gv, '<');
c521cf7c 1566 else
7716c5c5 1567 report_evil_fh(gv);
3280af22 1568 PUSHs(&PL_sv_no);
a0d0e21e
LW		 1569 }
1570 else {
3280af22 1571 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
a2a5de95 1572 Perl_ck_warner(aTHX_ packWARN(WARN_IO), "page overflow");
a0d0e21e 1573 }
d75029d0 1574 if (!do_print(PL_formtarget, fp))
3280af22 1575 PUSHs(&PL_sv_no);
a0d0e21e 1576 else {
3280af22
NIS		 1577 FmLINES(PL_formtarget) = 0;
1578 SvCUR_set(PL_formtarget, 0);
1579 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1580 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1581 (void)PerlIO_flush(fp);
3280af22 1582 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1583 }
1584 }
3280af22 1585 PL_formtarget = PL_bodytarget;
8e4ecf23 1586 RETURNOP(retop);
a0d0e21e
LW		 1587}
1588
1589PP(pp_prtf)
1590{
20b7effb 1591 dSP; dMARK; dORIGMARK;
760ac839 1592 PerlIO *fp;
a0d0e21e 1593
159b6efe
NC		 1594 GV * const gv
1595 = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv;
9c9f25b8 1596 IO *const io = GvIO(gv);
46fc3d4c 1597
87385d72
FC		 1598 /* Treat empty list as "" */
1599 if (MARK == SP) XPUSHs(&PL_sv_no);
1600
9c9f25b8 1601 if (io) {
a5e1d062 1602 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d
AL		 1603 if (mg) {
1604 if (MARK == ORIGMARK) {
1605 MEXTEND(SP, 1);
1606 ++MARK;
1607 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1608 ++SP;
1609 }
3e0cb5de 1610 return Perl_tied_method(aTHX_ SV_CONST(PRINTF), mark - 1, MUTABLE_SV(io),
d682515d
NC		 1611 mg,
1612 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1613 sp - mark);
a79db61d 1614 }
46fc3d4c
PP		 1615 }
1616
9c9f25b8 1617 if (!io) {
51087808 1618 report_evil_fh(gv);
93189314 1619 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW		 1620 goto just_say_no;
1621 }
1622 else if (!(fp = IoOFP(io))) {
7716c5c5
NC		 1623 if (IoIFP(io))
1624 report_wrongway_fh(gv, '<');
1625 else if (ckWARN(WARN_CLOSED))
1626 report_evil_fh(gv);
93189314 1627 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
a0d0e21e
LW		 1628 goto just_say_no;
1629 }
1630 else {
c7bd8b84 1631 SV *sv = sv_newmortal();
a0d0e21e
LW		 1632 do_sprintf(sv, SP - MARK, MARK + 1);
1633 if (!do_print(sv, fp))
1634 goto just_say_no;
1635
1636 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1637 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW		 1638 goto just_say_no;
1639 }
a0d0e21e 1640 SP = ORIGMARK;
3280af22 1641 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1642 RETURN;
1643
1644 just_say_no:
a0d0e21e 1645 SP = ORIGMARK;
3280af22 1646 PUSHs(&PL_sv_undef);
a0d0e21e
LW		 1647 RETURN;
1648}
1649
c07a80fd
PP		 1650PP(pp_sysopen)
1651{
39644a26 1652 dSP;
de5e49e1 1653 const int perm = (MAXARG > 3 && (TOPs || POPs)) ? POPi : 0666;
1df70142 1654 const int mode = POPi;
1b6737cc 1655 SV * const sv = POPs;
159b6efe 1656 GV * const gv = MUTABLE_GV(POPs);
1b6737cc 1657 STRLEN len;
c07a80fd 1658
4592e6ca 1659 /* Need TIEHANDLE method ? */
1b6737cc 1660 const char * const tmps = SvPV_const(sv, len);
7e30e49f 1661 if (do_open_raw(gv, tmps, len, mode, perm, NULL)) {
c07a80fd 1662 IoLINES(GvIOp(gv)) = 0;
3280af22 1663 PUSHs(&PL_sv_yes);
c07a80fd
PP		 1664 }
1665 else {
3280af22 1666 PUSHs(&PL_sv_undef);
c07a80fd
PP		 1667 }
1668 RETURN;
1669}
1670
b1c05ba5
DM		 1671
1672/* also used for: pp_read() and pp_recv() (where supported) */
1673
a0d0e21e
LW		 1674PP(pp_sysread)
1675{
20b7effb 1676 dSP; dMARK; dORIGMARK; dTARGET;
0b423688 1677 SSize_t offset;
a0d0e21e
LW		 1678 IO *io;
1679 char *buffer;
0b423688 1680 STRLEN orig_size;
5b54f415 1681 SSize_t length;
eb5c063a 1682 SSize_t count;
748a9306 1683 SV *bufsv;
a0d0e21e 1684 STRLEN blen;
eb5c063a 1685 int fp_utf8;
1dd30107
NC		 1686 int buffer_utf8;
1687 SV *read_target;
eb5c063a
NIS		 1688 Size_t got = 0;
1689 Size_t wanted;
1d636c13 1690 bool charstart = FALSE;
87330c3c
JH		 1691 STRLEN charskip = 0;
1692 STRLEN skip = 0;
159b6efe 1693 GV * const gv = MUTABLE_GV(*++MARK);
375ed12a
JH		 1694 int fd;
1695
5b468f54 1696 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1b6737cc 1697 && gv && (io = GvIO(gv)) )
137443ea 1698 {
a5e1d062 1699 const MAGIC *const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1b6737cc 1700 if (mg) {
3e0cb5de 1701 return Perl_tied_method(aTHX_ SV_CONST(READ), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC		 1702 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1703 sp - mark);
1b6737cc 1704 }
2ae324a7
PP		 1705 }
1706
a0d0e21e
LW		 1707 if (!gv)
1708 goto say_undef;
748a9306 1709 bufsv = *++MARK;
ff68c719 1710 if (! SvOK(bufsv))
60e13354 1711 SvPVCLEAR(bufsv);
a0d0e21e 1712 length = SvIVx(*++MARK);
4bac9ae4
CS		 1713 if (length < 0)
1714 DIE(aTHX_ "Negative length");
748a9306 1715 SETERRNO(0,0);
a0d0e21e
LW		 1716 if (MARK < SP)
1717 offset = SvIVx(*++MARK);
1718 else
1719 offset = 0;
1720 io = GvIO(gv);
b5fe5ca2 1721 if (!io || !IoIFP(io)) {
51087808 1722 report_evil_fh(gv);
b5fe5ca2 1723 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1724 goto say_undef;
b5fe5ca2 1725 }
375ed12a
JH		 1726
1727 /* Note that fd can here validly be -1, don't check it yet. */
1728 fd = PerlIO_fileno(IoIFP(io));
1729
0064a8a9 1730 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
fb10a8a7 1731 if (PL_op->op_type == OP_SYSREAD || PL_op->op_type == OP_RECV) {
89e5a021 1732 Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED),
1972ac5c
A		 1733 "%s() is deprecated on :utf8 handles. "
1734 "This will be a fatal error in Perl 5.30",
89e5a021 1735 OP_DESC(PL_op));
fb10a8a7 1736 }
7d59b7e4 1737 buffer = SvPVutf8_force(bufsv, blen);
1e54db1a 1738 /* UTF-8 may not have been set if they are all low bytes */
eb5c063a 1739 SvUTF8_on(bufsv);
9b9d7ce8 1740 buffer_utf8 = 0;
7d59b7e4
NIS		 1741 }
1742 else {
1743 buffer = SvPV_force(bufsv, blen);
1dd30107 1744 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
7d59b7e4 1745 }
4bac9ae4 1746 if (DO_UTF8(bufsv)) {
3f914778 1747 blen = sv_len_utf8_nomg(bufsv);
4bac9ae4 1748 }
7d59b7e4 1749
d0965105
JH		 1750 charstart = TRUE;
1751 charskip = 0;
87330c3c 1752 skip = 0;
4bac9ae4 1753 wanted = length;
d0965105 1754
a0d0e21e 1755#ifdef HAS_SOCKET
533c011a 1756 if (PL_op->op_type == OP_RECV) {
0b423688 1757 Sock_size_t bufsize;
46fc3d4c 1758 char namebuf[MAXPATHLEN];
375ed12a
JH		 1759 if (fd < 0) {
1760 SETERRNO(EBADF,SS_IVCHAN);
1761 RETPUSHUNDEF;
1762 }
b5afd346 1763#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
490ab354
JH		 1764 bufsize = sizeof (struct sockaddr_in);
1765#else
46fc3d4c 1766 bufsize = sizeof namebuf;
490ab354 1767#endif
abf95952
IZ		 1768#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1769 if (bufsize >= 256)
1770 bufsize = 255;
1771#endif
eb160463 1772 buffer = SvGROW(bufsv, (STRLEN)(length+1));
bbce6d69 1773 /* 'offset' means 'flags' here */
375ed12a 1774 count = PerlSock_recvfrom(fd, buffer, length, offset,
10edeb5d 1775 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1776 if (count < 0)
a0d0e21e 1777 RETPUSHUNDEF;
8eb023a9
DM		 1778 /* MSG_TRUNC can give oversized count; quietly lose it */
1779 if (count > length)
1780 count = length;
eb5c063a 1781 SvCUR_set(bufsv, count);
748a9306
LW		 1782 *SvEND(bufsv) = '\0';
1783 (void)SvPOK_only(bufsv);
eb5c063a
NIS		 1784 if (fp_utf8)
1785 SvUTF8_on(bufsv);
748a9306 1786 SvSETMAGIC(bufsv);
aac0dd9a 1787 /* This should not be marked tainted if the fp is marked clean */
bbce6d69
PP		 1788 if (!(IoFLAGS(io) & IOf_UNTAINT))
1789 SvTAINTED_on(bufsv);
a0d0e21e 1790 SP = ORIGMARK;
e122534c
TC		 1791#if defined(__CYGWIN__)
1792 /* recvfrom() on cygwin doesn't set bufsize at all for
1793 connected sockets, leaving us with trash in the returned
1794 name, so use the same test as the Win32 code to check if it
1795 wasn't set, and set it [perl #118843] */
1796 if (bufsize == sizeof namebuf)
1797 bufsize = 0;
1798#endif
46fc3d4c 1799 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW		 1800 PUSHs(TARG);
1801 RETURN;
1802 }
a0d0e21e 1803#endif
bbce6d69 1804 if (offset < 0) {
0b423688 1805 if (-offset > (SSize_t)blen)
cea2e8a9 1806 DIE(aTHX_ "Offset outside string");
bbce6d69
PP		 1807 offset += blen;
1808 }
eb5c063a
NIS		 1809 if (DO_UTF8(bufsv)) {
1810 /* convert offset-as-chars to offset-as-bytes */
d5f981bb 1811 if (offset >= (SSize_t)blen)
6960c29a
CH		 1812 offset += SvCUR(bufsv) - blen;
1813 else
1814 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
eb5c063a 1815 }
375ed12a 1816
eb5c063a 1817 more_bytes:
375ed12a
JH		 1818 /* Reestablish the fd in case it shifted from underneath us. */
1819 fd = PerlIO_fileno(IoIFP(io));
1820
0b423688 1821 orig_size = SvCUR(bufsv);
1dd30107
NC		 1822 /* Allocating length + offset + 1 isn't perfect in the case of reading
1823 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1824 unduly.
1825 (should be 2 * length + offset + 1, or possibly something longer if
47e13f24 1826 IN_ENCODING Is true) */
eb160463 1827 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
0b423688
TC		 1828 if (offset > 0 && offset > (SSize_t)orig_size) { /* Zero any newly allocated space */
1829 Zero(buffer+orig_size, offset-orig_size, char);
cd52b7b2 1830 }
eb5c063a 1831 buffer = buffer + offset;
1dd30107
NC		 1832 if (!buffer_utf8) {
1833 read_target = bufsv;
1834 } else {
1835 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1836 concatenate it to the current buffer. */
1837
1838 /* Truncate the existing buffer to the start of where we will be
1839 reading to: */
1840 SvCUR_set(bufsv, offset);
1841
1842 read_target = sv_newmortal();
862a34c6 1843 SvUPGRADE(read_target, SVt_PV);
fe2774ed 1844 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1dd30107 1845 }
eb5c063a 1846
533c011a 1847 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1848#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1849 if (IoTYPE(io) == IoTYPE_SOCKET) {
375ed12a
JH		 1850 if (fd < 0) {
1851 SETERRNO(EBADF,SS_IVCHAN);
1852 count = -1;
1853 }
1854 else
1855 count = PerlSock_recv(fd, buffer, length, 0);
a7092146
GS		 1856 }
1857 else
1858#endif
1859 {
375ed12a
JH		 1860 if (fd < 0) {
1861 SETERRNO(EBADF,RMS_IFI);
1862 count = -1;
1863 }
1864 else
1865 count = PerlLIO_read(fd, buffer, length);
a7092146 1866 }
a0d0e21e
LW		 1867 }
1868 else
3b02c43c 1869 {
eb5c063a
NIS		 1870 count = PerlIO_read(IoIFP(io), buffer, length);
1871 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1872 if (count == 0 && PerlIO_error(IoIFP(io)))
1873 count = -1;
3b02c43c 1874 }
eb5c063a 1875 if (count < 0) {
7716c5c5 1876 if (IoTYPE(io) == IoTYPE_WRONLY)
a5390457 1877 report_wrongway_fh(gv, '>');
a0d0e21e 1878 goto say_undef;
af8c498a 1879 }
aa07b2f6 1880 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1dd30107
NC		 1881 *SvEND(read_target) = '\0';
1882 (void)SvPOK_only(read_target);
0064a8a9 1883 if (fp_utf8 && !IN_BYTES) {
eb5c063a 1884 /* Look at utf8 we got back and count the characters */
1df70142 1885 const char *bend = buffer + count;
eb5c063a 1886 while (buffer < bend) {
d0965105
JH		 1887 if (charstart) {
1888 skip = UTF8SKIP(buffer);
1889 charskip = 0;
1890 }
1891 if (buffer - charskip + skip > bend) {
eb5c063a
NIS		 1892 /* partial character - try for rest of it */
1893 length = skip - (bend-buffer);
aa07b2f6 1894 offset = bend - SvPVX_const(bufsv);
d0965105
JH		 1895 charstart = FALSE;
1896 charskip += count;
eb5c063a
NIS		 1897 goto more_bytes;
1898 }
1899 else {
1900 got++;
1901 buffer += skip;
d0965105
JH		 1902 charstart = TRUE;
1903 charskip = 0;
eb5c063a
NIS		 1904 }
1905 }
1906 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1907 provided amount read (count) was what was requested (length)
1908 */
1909 if (got < wanted && count == length) {
d0965105 1910 length = wanted - got;
aa07b2f6 1911 offset = bend - SvPVX_const(bufsv);
eb5c063a
NIS		 1912 goto more_bytes;
1913 }
1914 /* return value is character count */
1915 count = got;
1916 SvUTF8_on(bufsv);
1917 }
1dd30107
NC		 1918 else if (buffer_utf8) {
1919 /* Let svcatsv upgrade the bytes we read in to utf8.
1920 The buffer is a mortal so will be freed soon. */
1921 sv_catsv_nomg(bufsv, read_target);
1922 }
748a9306 1923 SvSETMAGIC(bufsv);
aac0dd9a 1924 /* This should not be marked tainted if the fp is marked clean */
bbce6d69
PP		 1925 if (!(IoFLAGS(io) & IOf_UNTAINT))
1926 SvTAINTED_on(bufsv);
a0d0e21e 1927 SP = ORIGMARK;
eb5c063a 1928 PUSHi(count);
a0d0e21e
LW		 1929 RETURN;
1930
1931 say_undef:
1932 SP = ORIGMARK;
1933 RETPUSHUNDEF;
1934}
1935
b1c05ba5
DM		 1936
1937/* also used for: pp_send() where defined */
1938
60504e18 1939PP(pp_syswrite)
a0d0e21e 1940{
20b7effb 1941 dSP; dMARK; dORIGMARK; dTARGET;
748a9306 1942 SV *bufsv;
83003860 1943 const char *buffer;
8c99d73e 1944 SSize_t retval;
a0d0e21e 1945 STRLEN blen;
c9cb0f41 1946 STRLEN orig_blen_bytes;
64a1bc8e 1947 const int op_type = PL_op->op_type;
c9cb0f41
NC		 1948 bool doing_utf8;
1949 U8 *tmpbuf = NULL;
159b6efe 1950 GV *const gv = MUTABLE_GV(*++MARK);
91472ad4 1951 IO *const io = GvIO(gv);
375ed12a 1952 int fd;
91472ad4
NC		 1953
1954 if (op_type == OP_SYSWRITE && io) {
a5e1d062 1955 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1956 if (mg) {
a79db61d 1957 if (MARK == SP - 1) {
c8834ab7
TC		 1958 SV *sv = *SP;
1959 mXPUSHi(sv_len(sv));
a79db61d
AL		 1960 PUTBACK;
1961 }
1962
3e0cb5de 1963 return Perl_tied_method(aTHX_ SV_CONST(WRITE), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC		 1964 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1965 sp - mark);
64a1bc8e 1966 }
1d603a67 1967 }
a0d0e21e
LW		 1968 if (!gv)
1969 goto say_undef;
64a1bc8e 1970
748a9306 1971 bufsv = *++MARK;
64a1bc8e 1972
748a9306 1973 SETERRNO(0,0);
cf167416 1974 if (!io || !IoIFP(io) || IoTYPE(io) == IoTYPE_RDONLY) {
8c99d73e 1975 retval = -1;
51087808
NC		 1976 if (io && IoIFP(io))
1977 report_wrongway_fh(gv, '<');
1978 else
1979 report_evil_fh(gv);
b5fe5ca2 1980 SETERRNO(EBADF,RMS_IFI);
7d59b7e4
NIS		 1981 goto say_undef;
1982 }
375ed12a
JH		 1983 fd = PerlIO_fileno(IoIFP(io));
1984 if (fd < 0) {
1985 SETERRNO(EBADF,SS_IVCHAN);
1986 retval = -1;
1987 goto say_undef;
1988 }
7d59b7e4 1989
c9cb0f41
NC		 1990 /* Do this first to trigger any overloading. */
1991 buffer = SvPV_const(bufsv, blen);
1992 orig_blen_bytes = blen;
1993 doing_utf8 = DO_UTF8(bufsv);
1994
7d59b7e4 1995 if (PerlIO_isutf8(IoIFP(io))) {
89e5a021 1996 Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED),
1972ac5c
A		 1997 "%s() is deprecated on :utf8 handles. "
1998 "This will be a fatal error in Perl 5.30",
89e5a021 1999 OP_DESC(PL_op));
6aa2f6a7 2000 if (!SvUTF8(bufsv)) {
c9cb0f41
NC		 2001 /* We don't modify the original scalar. */
2002 tmpbuf = bytes_to_utf8((const U8*) buffer, &blen);
2003 buffer = (char *) tmpbuf;
2004 doing_utf8 = TRUE;
2005 }
a0d0e21e 2006 }
c9cb0f41
NC		 2007 else if (doing_utf8) {
2008 STRLEN tmplen = blen;
a79db61d 2009 U8 * const result = bytes_from_utf8((const U8*) buffer, &tmplen, &doing_utf8);
c9cb0f41
NC		 2010 if (!doing_utf8) {
2011 tmpbuf = result;
2012 buffer = (char *) tmpbuf;
2013 blen = tmplen;
2014 }
2015 else {
2016 assert((char *)result == buffer);
2017 Perl_croak(aTHX_ "Wide character in %s", OP_DESC(PL_op));
2018 }
7d59b7e4
NIS		 2019 }
2020
e2712234 2021#ifdef HAS_SOCKET
7627e6d0 2022 if (op_type == OP_SEND) {
e2712234
NC		 2023 const int flags = SvIVx(*++MARK);
2024 if (SP > MARK) {
2025 STRLEN mlen;
2026 char * const sockbuf = SvPVx(*++MARK, mlen);
375ed12a 2027 retval = PerlSock_sendto(fd, buffer, blen,
e2712234
NC		 2028 flags, (struct sockaddr *)sockbuf, mlen);
2029 }
2030 else {
375ed12a 2031 retval = PerlSock_send(fd, buffer, blen, flags);
e2712234 2032 }
7627e6d0
NC		 2033 }
2034 else
e2712234 2035#endif
7627e6d0 2036 {
c9cb0f41
NC		 2037 Size_t length = 0; /* This length is in characters. */
2038 STRLEN blen_chars;
7d59b7e4 2039 IV offset;
c9cb0f41
NC		 2040
2041 if (doing_utf8) {
2042 if (tmpbuf) {
2043 /* The SV is bytes, and we've had to upgrade it. */
2044 blen_chars = orig_blen_bytes;
2045 } else {
2046 /* The SV really is UTF-8. */
3f914778
FC		 2047 /* Don't call sv_len_utf8 on a magical or overloaded
2048 scalar, as we might get back a different result. */
2049 blen_chars = sv_or_pv_len_utf8(bufsv, buffer, blen);
c9cb0f41
NC		 2050 }
2051 } else {
2052 blen_chars = blen;
2053 }
2054
2055 if (MARK >= SP) {
2056 length = blen_chars;
2057 } else {
2058#if Size_t_size > IVSIZE
2059 length = (Size_t)SvNVx(*++MARK);
2060#else
2061 length = (Size_t)SvIVx(*++MARK);
2062#endif
4b0c4b6f
NC		 2063 if ((SSize_t)length < 0) {
2064 Safefree(tmpbuf);
c9cb0f41 2065 DIE(aTHX_ "Negative length");
4b0c4b6f 2066 }
7d59b7e4 2067 }
c9cb0f41 2068
bbce6d69 2069 if (MARK < SP) {
a0d0e21e 2070 offset = SvIVx(*++MARK);
bbce6d69 2071 if (offset < 0) {
4b0c4b6f
NC		 2072 if (-offset > (IV)blen_chars) {
2073 Safefree(tmpbuf);
cea2e8a9 2074 DIE(aTHX_ "Offset outside string");
4b0c4b6f 2075 }
c9cb0f41 2076 offset += blen_chars;
3c946528 2077 } else if (offset > (IV)blen_chars) {
4b0c4b6f 2078 Safefree(tmpbuf);
cea2e8a9 2079 DIE(aTHX_ "Offset outside string");
4b0c4b6f 2080 }
bbce6d69 2081 } else
a0d0e21e 2082 offset = 0;
c9cb0f41
NC		 2083 if (length > blen_chars - offset)
2084 length = blen_chars - offset;
2085 if (doing_utf8) {
2086 /* Here we convert length from characters to bytes. */
2087 if (tmpbuf || SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
2088 /* Either we had to convert the SV, or the SV is magical, or
2089 the SV has overloading, in which case we can't or mustn't
2090 or mustn't call it again. */
2091
2092 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
2093 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
2094 } else {
2095 /* It's a real UTF-8 SV, and it's not going to change under
2096 us. Take advantage of any cache. */
2097 I32 start = offset;
2098 I32 len_I32 = length;
2099
2100 /* Convert the start and end character positions to bytes.
2101 Remember that the second argument to sv_pos_u2b is relative
2102 to the first. */
2103 sv_pos_u2b(bufsv, &start, &len_I32);
2104
2105 buffer += start;
2106 length = len_I32;
2107 }
7d59b7e4
NIS		 2108 }
2109 else {
2110 buffer = buffer+offset;
2111 }
a7092146 2112#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 2113 if (IoTYPE(io) == IoTYPE_SOCKET) {
375ed12a 2114 retval = PerlSock_send(fd, buffer, length, 0);
a7092146
GS		 2115 }
2116 else
2117#endif
2118 {
94e4c244 2119 /* See the note at doio.c:do_print about filesize limits. --jhi */
375ed12a 2120 retval = PerlLIO_write(fd, buffer, length);
a7092146 2121 }
a0d0e21e 2122 }
c9cb0f41 2123
8c99d73e 2124 if (retval < 0)
a0d0e21e
LW		 2125 goto say_undef;
2126 SP = ORIGMARK;
c9cb0f41 2127 if (doing_utf8)
f36eea10 2128 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
4b0c4b6f 2129
a79db61d 2130 Safefree(tmpbuf);
8c99d73e
GS		 2131#if Size_t_size > IVSIZE
2132 PUSHn(retval);
2133#else
2134 PUSHi(retval);
2135#endif
a0d0e21e
LW		 2136 RETURN;
2137
2138 say_undef:
a79db61d 2139 Safefree(tmpbuf);
a0d0e21e
LW		 2140 SP = ORIGMARK;
2141 RETPUSHUNDEF;
2142}
2143
a0d0e21e
LW		 2144PP(pp_eof)
2145{
20b7effb 2146 dSP;
a0d0e21e 2147 GV *gv;
32e65323 2148 IO *io;
a5e1d062 2149 const MAGIC *mg;
bc0c81ca
NC		 2150 /*
2151 * in Perl 5.12 and later, the additional parameter is a bitmask:
2152 * 0 = eof
2153 * 1 = eof(FH)
2154 * 2 = eof() <- ARGV magic
2155 *
2156 * I'll rely on the compiler's trace flow analysis to decide whether to
2157 * actually assign this out here, or punt it into the only block where it is
2158 * used. Doing it out here is DRY on the condition logic.
2159 */
2160 unsigned int which;
a0d0e21e 2161
bc0c81ca 2162 if (MAXARG) {
32e65323 2163 gv = PL_last_in_gv = MUTABLE_GV(POPs); /* eof(FH) */
bc0c81ca
NC		 2164 which = 1;
2165 }
b5f55170
NC		 2166 else {
2167 EXTEND(SP, 1);
2168
bc0c81ca 2169 if (PL_op->op_flags & OPf_SPECIAL) {
b5f55170 2170 gv = PL_last_in_gv = GvEGVx(PL_argvgv); /* eof() - ARGV magic */
bc0c81ca
NC		 2171 which = 2;
2172 }
2173 else {
b5f55170 2174 gv = PL_last_in_gv; /* eof */
bc0c81ca
NC		 2175 which = 0;
2176 }
b5f55170 2177 }
32e65323
CS		 2178
2179 if (!gv)
2180 RETPUSHNO;
2181
2182 if ((io = GvIO(gv)) && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) {
3e0cb5de 2183 return tied_method1(SV_CONST(EOF), SP, MUTABLE_SV(io), mg, newSVuv(which));
146174a9 2184 }
4592e6ca 2185
32e65323
CS		 2186 if (!MAXARG && (PL_op->op_flags & OPf_SPECIAL)) { /* eof() */
2187 if (io && !IoIFP(io)) {
b9f2b683 2188 if ((IoFLAGS(io) & IOf_START) && av_tindex(GvAVn(gv)) < 0) {
1037353b 2189 SV ** svp;
32e65323
CS		 2190 IoLINES(io) = 0;
2191 IoFLAGS(io) &= ~IOf_START;
d5eb9a46 2192 do_open6(gv, "-", 1, NULL, NULL, 0);
1037353b
DD		 2193 svp = &GvSV(gv);
2194 if (*svp) {
2195 SV * sv = *svp;
2196 sv_setpvs(sv, "-");
2197 SvSETMAGIC(sv);
2198 }
32e65323 2199 else
1037353b 2200 *svp = newSVpvs("-");
32e65323 2201 }
157fb5a1 2202 else if (!nextargv(gv, FALSE))
32e65323 2203 RETPUSHYES;
6136c704 2204 }
4592e6ca
NIS		 2205 }
2206
32e65323 2207 PUSHs(boolSV(do_eof(gv)));
a0d0e21e
LW		 2208 RETURN;
2209}
2210
2211PP(pp_tell)
2212{
20b7effb 2213 dSP; dTARGET;
301e8125 2214 GV *gv;
5b468f54 2215 IO *io;
a0d0e21e 2216
b64a1294 2217 if (MAXARG != 0 && (TOPs || POPs))
159b6efe 2218 PL_last_in_gv = MUTABLE_GV(POPs);
ac3697cd
NC		 2219 else
2220 EXTEND(SP, 1);
c4420975 2221 gv = PL_last_in_gv;
4592e6ca 2222
9c9f25b8
NC		 2223 io = GvIO(gv);
2224 if (io) {
a5e1d062 2225 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2226 if (mg) {
3e0cb5de 2227 return tied_method0(SV_CONST(TELL), SP, MUTABLE_SV(io), mg);
a79db61d 2228 }
4592e6ca 2229 }
f4817f32 2230 else if (!gv) {
f03173f2
RGS		 2231 if (!errno)
2232 SETERRNO(EBADF,RMS_IFI);
2233 PUSHi(-1);
2234 RETURN;
2235 }
4592e6ca 2236
146174a9
CB		 2237#if LSEEKSIZE > IVSIZE
2238 PUSHn( do_tell(gv) );
2239#else
a0d0e21e 2240 PUSHi( do_tell(gv) );
146174a9 2241#endif
a0d0e21e
LW		 2242 RETURN;
2243}
2244
b1c05ba5
DM		 2245
2246/* also used for: pp_seek() */
2247
137443ea
PP		 2248PP(pp_sysseek)
2249{
20b7effb 2250 dSP;
1df70142 2251 const int whence = POPi;
146174a9 2252#if LSEEKSIZE > IVSIZE
7452cf6a 2253 const Off_t offset = (Off_t)SvNVx(POPs);
146174a9 2254#else
7452cf6a 2255 const Off_t offset = (Off_t)SvIVx(POPs);
146174a9 2256#endif
a0d0e21e 2257
159b6efe 2258 GV * const gv = PL_last_in_gv = MUTABLE_GV(POPs);
9c9f25b8 2259 IO *const io = GvIO(gv);
4592e6ca 2260
9c9f25b8 2261 if (io) {
a5e1d062 2262 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2263 if (mg) {
cb50131a 2264#if LSEEKSIZE > IVSIZE
74f0b550 2265 SV *const offset_sv = newSVnv((NV) offset);
cb50131a 2266#else
74f0b550 2267 SV *const offset_sv = newSViv(offset);
cb50131a 2268#endif
bc0c81ca 2269
3e0cb5de 2270 return tied_method2(SV_CONST(SEEK), SP, MUTABLE_SV(io), mg, offset_sv,
d682515d 2271 newSViv(whence));
a79db61d 2272 }
4592e6ca
NIS		 2273 }
2274
533c011a 2275 if (PL_op->op_type == OP_SEEK)
8903cb82
PP		 2276 PUSHs(boolSV(do_seek(gv, offset, whence)));
2277 else {
0bcc34c2 2278 const Off_t sought = do_sysseek(gv, offset, whence);
b448e4fe 2279 if (sought < 0)
146174a9
CB		 2280 PUSHs(&PL_sv_undef);
2281 else {
7452cf6a 2282 SV* const sv = sought ?
146174a9 2283#if LSEEKSIZE > IVSIZE
b448e4fe 2284 newSVnv((NV)sought)
146174a9 2285#else
b448e4fe 2286 newSViv(sought)
146174a9
CB		 2287#endif
2288 : newSVpvn(zero_but_true, ZBTLEN);
6e449a3a 2289 mPUSHs(sv);
146174a9 2290 }
8903cb82 2291 }
a0d0e21e
LW		 2292 RETURN;
2293}
2294
2295PP(pp_truncate)
2296{
39644a26 2297 dSP;
8c99d73e
GS		 2298 /* There seems to be no consensus on the length type of truncate()
2299 * and ftruncate(), both off_t and size_t have supporters. In
2300 * general one would think that when using large files, off_t is
2301 * at least as wide as size_t, so using an off_t should be okay. */
2302 /* XXX Configure probe for the length type of *truncate() needed XXX */
0bcc34c2 2303 Off_t len;
a0d0e21e 2304
25342a55 2305#if Off_t_size > IVSIZE
0bcc34c2 2306 len = (Off_t)POPn;
8c99d73e 2307#else
0bcc34c2 2308 len = (Off_t)POPi;
8c99d73e
GS		 2309#endif
2310 /* Checking for length < 0 is problematic as the type might or
301e8125 2311 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 2312 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2313 SETERRNO(0,0);
d05c1ba0 2314 {
5e0adc2d 2315 SV * const sv = POPs;
d05c1ba0
JH		 2316 int result = 1;
2317 GV *tmpgv;
090bf15b
SR		 2318 IO *io;
2319
42409c40
FC		 2320 if (PL_op->op_flags & OPf_SPECIAL
2321 ? (tmpgv = gv_fetchsv(sv, 0, SVt_PVIO), 1)
2322 : !!(tmpgv = MAYBE_DEREF_GV(sv)) ) {
9c9f25b8
NC		 2323 io = GvIO(tmpgv);
2324 if (!io)
090bf15b 2325 result = 0;
d05c1ba0 2326 else {
090bf15b 2327 PerlIO *fp;
090bf15b
SR		 2328 do_ftruncate_io:
2329 TAINT_PROPER("truncate");
2330 if (!(fp = IoIFP(io))) {
2331 result = 0;
2332 }
2333 else {
375ed12a
JH		 2334 int fd = PerlIO_fileno(fp);
2335 if (fd < 0) {
2336 SETERRNO(EBADF,RMS_IFI);
2337 result = 0;
2338 } else {
a9f17b43
JH		 2339 if (len < 0) {
2340 SETERRNO(EINVAL, LIB_INVARG);
2341 result = 0;
2342 } else {
2343 PerlIO_flush(fp);
cbdc8872 2344#ifdef HAS_TRUNCATE
a9f17b43 2345 if (ftruncate(fd, len) < 0)
301e8125 2346#else
a9f17b43 2347 if (my_chsize(fd, len) < 0)
cbdc8872 2348#endif
a9f17b43
JH		 2349 result = 0;
2350 }
375ed12a 2351 }
090bf15b 2352 }
d05c1ba0 2353 }
cbdc8872 2354 }
5e0adc2d 2355 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2356 io = MUTABLE_IO(SvRV(sv)); /* *main::FRED{IO} for example */
090bf15b 2357 goto do_ftruncate_io;
5e0adc2d
FC		 2358 }
2359 else {
2360 const char * const name = SvPV_nomg_const_nolen(sv);
d05c1ba0 2361 TAINT_PROPER("truncate");
cbdc8872 2362#ifdef HAS_TRUNCATE
d05c1ba0
JH		 2363 if (truncate(name, len) < 0)
2364 result = 0;
cbdc8872 2365#else
d05c1ba0 2366 {
d484df69
TC		 2367 int mode = O_RDWR;
2368 int tmpfd;
2369
2370#if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE)
2371 mode |= O_LARGEFILE; /* Transparently largefiley. */
2372#endif
2373#ifdef O_BINARY
2374 /* On open(), the Win32 CRT tries to seek around text
2375 * files using 32-bit offsets, which causes the open()
2376 * to fail on large files, so open in binary mode.
2377 */
2378 mode |= O_BINARY;
2379#endif
2380 tmpfd = PerlLIO_open(name, mode);
d05c1ba0 2381
375ed12a 2382 if (tmpfd < 0) {
cbdc8872 2383 result = 0;
375ed12a 2384 } else {
d05c1ba0
JH		 2385 if (my_chsize(tmpfd, len) < 0)
2386 result = 0;
2387 PerlLIO_close(tmpfd);
2388 }
cbdc8872 2389 }
a0d0e21e 2390#endif
d05c1ba0 2391 }
a0d0e21e 2392
d05c1ba0
JH		 2393 if (result)
2394 RETPUSHYES;
2395 if (!errno)
93189314 2396 SETERRNO(EBADF,RMS_IFI);
d05c1ba0
JH		 2397 RETPUSHUNDEF;
2398 }
a0d0e21e
LW		 2399}
2400
b1c05ba5
DM		 2401
2402/* also used for: pp_fcntl() */
2403
a0d0e21e
LW		 2404PP(pp_ioctl)
2405{
20b7effb 2406 dSP; dTARGET;
7452cf6a 2407 SV * const argsv = POPs;
1df70142 2408 const unsigned int func = POPu;
49225470 2409 int optype;
159b6efe 2410 GV * const gv = MUTABLE_GV(POPs);
8a6c0fcb 2411 IO * const io = GvIOn(gv);
a0d0e21e 2412 char *s;
324aa91a 2413 IV retval;
a0d0e21e 2414
8a6c0fcb 2415 if (!IoIFP(io)) {
51087808 2416 report_evil_fh(gv);
93189314 2417 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
a0d0e21e
LW		 2418 RETPUSHUNDEF;
2419 }
2420
748a9306 2421 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2422 STRLEN len;
324aa91a 2423 STRLEN need;
748a9306 2424 s = SvPV_force(argsv, len);
324aa91a
HF		 2425 need = IOCPARM_LEN(func);
2426 if (len < need) {
2427 s = Sv_Grow(argsv, need + 1);
2428 SvCUR_set(argsv, need);
a0d0e21e
LW		 2429 }
2430
748a9306 2431 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW		 2432 }
2433 else {
748a9306 2434 retval = SvIV(argsv);
c529f79d 2435 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW		 2436 }
2437
49225470 2438 optype = PL_op->op_type;
ed4b2e6b 2439 TAINT_PROPER(PL_op_desc[optype]);
a0d0e21e
LW		 2440
2441 if (optype == OP_IOCTL)
2442#ifdef HAS_IOCTL
76e3520e 2443 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2444#else
cea2e8a9 2445 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW		 2446#endif
2447 else
c214f4ad
B		 2448#ifndef HAS_FCNTL
2449 DIE(aTHX_ "fcntl is not implemented");
2450#else
55497cff 2451#if defined(OS2) && defined(__EMX__)
760ac839 2452 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2453#else
760ac839 2454 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2455#endif
6652bd42 2456#endif
a0d0e21e 2457
6652bd42 2458#if defined(HAS_IOCTL) || defined(HAS_FCNTL)
748a9306
LW		 2459 if (SvPOK(argsv)) {
2460 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2461 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
53e06cf0 2462 OP_NAME(PL_op));
748a9306
LW		 2463 s[SvCUR(argsv)] = 0; /* put our null back */
2464 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW		 2465 }
2466
2467 if (retval == -1)
2468 RETPUSHUNDEF;
2469 if (retval != 0) {
2470 PUSHi(retval);
2471 }
2472 else {
8903cb82 2473 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e 2474 }
4808266b 2475#endif
c214f4ad 2476 RETURN;
a0d0e21e
LW		 2477}
2478
2479PP(pp_flock)
2480{
9cad6237 2481#ifdef FLOCK
20b7effb 2482 dSP; dTARGET;
a0d0e21e 2483 I32 value;
7452cf6a 2484 const int argtype = POPi;
1f28cbca 2485 GV * const gv = MUTABLE_GV(POPs);
9c9f25b8
NC		 2486 IO *const io = GvIO(gv);
2487 PerlIO *const fp = io ? IoIFP(io) : NULL;
16d20bd9 2488
0bcc34c2 2489 /* XXX Looks to me like io is always NULL at this point */
a0d0e21e 2490 if (fp) {
68dc0745 2491 (void)PerlIO_flush(fp);
76e3520e 2492 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2493 }
cb50131a 2494 else {
51087808 2495 report_evil_fh(gv);
a0d0e21e 2496 value = 0;
93189314 2497 SETERRNO(EBADF,RMS_IFI);
cb50131a 2498 }
a0d0e21e
LW		 2499 PUSHi(value);
2500 RETURN;
2501#else
56a94ef2 2502 DIE(aTHX_ PL_no_func, "flock");
a0d0e21e
LW		 2503#endif
2504}
2505
2506/* Sockets. */
2507
7627e6d0
NC		 2508#ifdef HAS_SOCKET
2509
a0d0e21e
LW		 2510PP(pp_socket)
2511{
20b7effb 2512 dSP;
7452cf6a
AL		 2513 const int protocol = POPi;
2514 const int type = POPi;
2515 const int domain = POPi;
159b6efe 2516 GV * const gv = MUTABLE_GV(POPs);
5805b585 2517 IO * const io = GvIOn(gv);
a0d0e21e
LW		 2518 int fd;
2519
57171420
BS		 2520 if (IoIFP(io))
2521 do_close(gv, FALSE);
2522
a0d0e21e 2523 TAINT_PROPER("socket");
6ad3d225 2524 fd = PerlSock_socket(domain, type, protocol);
375ed12a 2525 if (fd < 0) {
a0d0e21e 2526 RETPUSHUNDEF;
375ed12a 2527 }
147e3846
KW		 2528 IoIFP(io) = PerlIO_fdopen(fd, "r" SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2529 IoOFP(io) = PerlIO_fdopen(fd, "w" SOCKET_OPEN_MODE);
50952442 2530 IoTYPE(io) = IoTYPE_SOCKET;
a0d0e21e 2531 if (!IoIFP(io) || !IoOFP(io)) {
760ac839
LW		 2532 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2533 if (IoOFP(io)) PerlIO_close(IoOFP(io));
6ad3d225 2534 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
a0d0e21e
LW		 2535 RETPUSHUNDEF;
2536 }
131d45a9
JH		 2537#if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
2538 /* ensure close-on-exec */
2539 if (fd > PL_maxsysfd && fcntl(fd, F_SETFD, FD_CLOEXEC) < 0)
375ed12a 2540 RETPUSHUNDEF;
8d2a6795 2541#endif
a0d0e21e
LW		 2542
2543 RETPUSHYES;
a0d0e21e 2544}
7627e6d0 2545#endif
a0d0e21e
LW		 2546
2547PP(pp_sockpair)
2548{
c95c94b1 2549#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
20b7effb 2550 dSP;
e0b7b5e2 2551 int fd[2];
7452cf6a
AL		 2552 const int protocol = POPi;
2553 const int type = POPi;
2554 const int domain = POPi;
e0b7b5e2 2555
159b6efe 2556 GV * const gv2 = MUTABLE_GV(POPs);
49561e08
FC		 2557 IO * const io2 = GvIOn(gv2);
2558 GV * const gv1 = MUTABLE_GV(POPs);
2559 IO * const io1 = GvIOn(gv1);
a0d0e21e 2560
49561e08 2561 if (IoIFP(io1))
dc0d0a5f 2562 do_close(gv1, FALSE);
49561e08 2563 if (IoIFP(io2))
dc0d0a5f 2564 do_close(gv2, FALSE);
57171420 2565
a0d0e21e 2566 TAINT_PROPER("socketpair");
6ad3d225 2567 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
a0d0e21e 2568 RETPUSHUNDEF;
147e3846
KW		 2569 IoIFP(io1) = PerlIO_fdopen(fd[0], "r" SOCKET_OPEN_MODE);
2570 IoOFP(io1) = PerlIO_fdopen(fd[0], "w" SOCKET_OPEN_MODE);
50952442 2571 IoTYPE(io1) = IoTYPE_SOCKET;
147e3846
KW		 2572 IoIFP(io2) = PerlIO_fdopen(fd[1], "r" SOCKET_OPEN_MODE);
2573 IoOFP(io2) = PerlIO_fdopen(fd[1], "w" SOCKET_OPEN_MODE);
50952442 2574 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2575 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW		 2576 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2577 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2578 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW		 2579 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2580 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2581 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW		 2582 RETPUSHUNDEF;
2583 }
131d45a9 2584#if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
375ed12a 2585 /* ensure close-on-exec */
131d45a9
JH		 2586 if ((fd[0] > PL_maxsysfd && fcntl(fd[0], F_SETFD, FD_CLOEXEC) < 0) ||
2587 (fd[1] > PL_maxsysfd && fcntl(fd[1], F_SETFD, FD_CLOEXEC) < 0))
375ed12a 2588 RETPUSHUNDEF;
8d2a6795 2589#endif
a0d0e21e
LW		 2590
2591 RETPUSHYES;
2592#else
cea2e8a9 2593 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW		 2594#endif
2595}
2596
7627e6d0
NC		 2597#ifdef HAS_SOCKET
2598
b1c05ba5
DM		 2599/* also used for: pp_connect() */
2600
a0d0e21e
LW		 2601PP(pp_bind)
2602{
20b7effb 2603 dSP;
7452cf6a 2604 SV * const addrsv = POPs;
349d4f2f
NC		 2605 /* OK, so on what platform does bind modify addr? */
2606 const char *addr;
159b6efe 2607 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2608 IO * const io = GvIOn(gv);
a0d0e21e 2609 STRLEN len;
e0b7b5e2 2610 int op_type;
375ed12a 2611 int fd;
a0d0e21e 2612
8a6c0fcb 2613 if (!IoIFP(io))
a0d0e21e 2614 goto nuts;
375ed12a
JH		 2615 fd = PerlIO_fileno(IoIFP(io));
2616 if (fd < 0)
2617 goto nuts;
a0d0e21e 2618
349d4f2f 2619 addr = SvPV_const(addrsv, len);
e0b7b5e2 2620 op_type = PL_op->op_type;
32b81f04
NC		 2621 TAINT_PROPER(PL_op_desc[op_type]);
2622 if ((op_type == OP_BIND
375ed12a
JH		 2623 ? PerlSock_bind(fd, (struct sockaddr *)addr, len)
2624 : PerlSock_connect(fd, (struct sockaddr *)addr, len))
32b81f04 2625 >= 0)
a0d0e21e
LW		 2626 RETPUSHYES;
2627 else
2628 RETPUSHUNDEF;
2629
7b52d656 2630 nuts:
fbcda526 2631 report_evil_fh(gv);
93189314 2632 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2633 RETPUSHUNDEF;
a0d0e21e
LW		 2634}
2635
2636PP(pp_listen)
2637{
20b7effb 2638 dSP;
7452cf6a 2639 const int backlog = POPi;
159b6efe 2640 GV * const gv = MUTABLE_GV(POPs);
8a6c0fcb 2641 IO * const io = GvIOn(gv);
a0d0e21e 2642
8a6c0fcb 2643 if (!IoIFP(io))
a0d0e21e
LW		 2644 goto nuts;
2645
6ad3d225 2646 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW		 2647 RETPUSHYES;
2648 else
2649 RETPUSHUNDEF;
2650
7b52d656 2651 nuts:
fbcda526 2652 report_evil_fh(gv);
93189314 2653 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2654 RETPUSHUNDEF;
a0d0e21e
LW		 2655}
2656
2657PP(pp_accept)
2658{
20b7effb 2659 dSP; dTARGET;
eb578fdb 2660 IO *nstio;
93d47a36 2661 char namebuf[MAXPATHLEN];
b5afd346 2662#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
93d47a36
JH		 2663 Sock_size_t len = sizeof (struct sockaddr_in);
2664#else
2665 Sock_size_t len = sizeof namebuf;
2666#endif
159b6efe
NC		 2667 GV * const ggv = MUTABLE_GV(POPs);
2668 GV * const ngv = MUTABLE_GV(POPs);
a0d0e21e
LW		 2669 int fd;
2670
8a6c0fcb 2671 IO * const gstio = GvIO(ggv);
a0d0e21e
LW		 2672 if (!gstio || !IoIFP(gstio))
2673 goto nuts;
2674
2675 nstio = GvIOn(ngv);
93d47a36 2676 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
e294cc5d
JH		 2677#if defined(OEMVS)
2678 if (len == 0) {
2679 /* Some platforms indicate zero length when an AF_UNIX client is
2680 * not bound. Simulate a non-zero-length sockaddr structure in
2681 * this case. */
2682 namebuf[0] = 0; /* sun_len */
2683 namebuf[1] = AF_UNIX; /* sun_family */
2684 len = 2;
2685 }
2686#endif
2687
a0d0e21e
LW		 2688 if (fd < 0)
2689 goto badexit;
a70048fb
AB		 2690 if (IoIFP(nstio))
2691 do_close(ngv, FALSE);
147e3846
KW		 2692 IoIFP(nstio) = PerlIO_fdopen(fd, "r" SOCKET_OPEN_MODE);
2693 IoOFP(nstio) = PerlIO_fdopen(fd, "w" SOCKET_OPEN_MODE);
50952442 2694 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2695 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW		 2696 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2697 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2698 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW		 2699 goto badexit;
2700 }
131d45a9
JH		 2701#if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
2702 /* ensure close-on-exec */
2703 if (fd > PL_maxsysfd && fcntl(fd, F_SETFD, FD_CLOEXEC) < 0)
375ed12a 2704 goto badexit;
8d2a6795 2705#endif
a0d0e21e 2706
381c1bae 2707#ifdef __SCO_VERSION__
93d47a36 2708 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
381c1bae 2709#endif
ed79a026 2710
93d47a36 2711 PUSHp(namebuf, len);
a0d0e21e
LW		 2712 RETURN;
2713
7b52d656 2714 nuts:
fbcda526 2715 report_evil_fh(ggv);
93189314 2716 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2717
7b52d656 2718 badexit:
a0d0e21e
LW		 2719 RETPUSHUNDEF;
2720
a0d0e21e
LW		 2721}
2722
2723PP(pp_shutdown)
2724{
20b7effb 2725 dSP; dTARGET;
7452cf6a 2726 const int how = POPi;
159b6efe 2727 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2728 IO * const io = GvIOn(gv);
a0d0e21e 2729
8a6c0fcb 2730 if (!IoIFP(io))
a0d0e21e
LW		 2731 goto nuts;
2732
6ad3d225 2733 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW		 2734 RETURN;
2735
7b52d656 2736 nuts:
fbcda526 2737 report_evil_fh(gv);
93189314 2738 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2739 RETPUSHUNDEF;
a0d0e21e
LW		 2740}
2741
b1c05ba5
DM		 2742
2743/* also used for: pp_gsockopt() */
2744
a0d0e21e
LW		 2745PP(pp_ssockopt)
2746{
20b7effb 2747 dSP;
7452cf6a 2748 const int optype = PL_op->op_type;
561b68a9 2749 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
7452cf6a
AL		 2750 const unsigned int optname = (unsigned int) POPi;
2751 const unsigned int lvl = (unsigned int) POPi;
159b6efe 2752 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2753 IO * const io = GvIOn(gv);
a0d0e21e 2754 int fd;
1e422769 2755 Sock_size_t len;
a0d0e21e 2756
49225470 2757 if (!IoIFP(io))
a0d0e21e
LW		 2758 goto nuts;
2759
760ac839 2760 fd = PerlIO_fileno(IoIFP(io));
375ed12a
JH		 2761 if (fd < 0)
2762 goto nuts;
a0d0e21e
LW		 2763 switch (optype) {
2764 case OP_GSOCKOPT:
748a9306 2765 SvGROW(sv, 257);
a0d0e21e 2766 (void)SvPOK_only(sv);
748a9306
LW		 2767 SvCUR_set(sv,256);
2768 *SvEND(sv) ='\0';
1e422769 2769 len = SvCUR(sv);
6ad3d225 2770 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2771 goto nuts2;
ee2276e5
JH		 2772#if defined(_AIX)
2773 /* XXX Configure test: does getsockopt set the length properly? */
2774 if (len == 256)
2775 len = sizeof(int);
2776#endif
1e422769 2777 SvCUR_set(sv, len);
748a9306 2778 *SvEND(sv) ='\0';
a0d0e21e
LW		 2779 PUSHs(sv);
2780 break;
2781 case OP_SSOCKOPT: {
1215b447
JH		 2782#if defined(__SYMBIAN32__)
2783# define SETSOCKOPT_OPTION_VALUE_T void *
2784#else
2785# define SETSOCKOPT_OPTION_VALUE_T const char *
2786#endif
2787 /* XXX TODO: We need to have a proper type (a Configure probe,
2788 * etc.) for what the C headers think of the third argument of
2789 * setsockopt(), the option_value read-only buffer: is it
2790 * a "char *", or a "void *", const or not. Some compilers
2791 * don't take kindly to e.g. assuming that "char *" implicitly
2792 * promotes to a "void *", or to explicitly promoting/demoting
2793 * consts to non/vice versa. The "const void *" is the SUS
2794 * definition, but that does not fly everywhere for the above
2795 * reasons. */
2796 SETSOCKOPT_OPTION_VALUE_T buf;
1e422769
PP		 2797 int aint;
2798 if (SvPOKp(sv)) {
2d8e6c8d 2799 STRLEN l;
1215b447 2800 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2d8e6c8d 2801 len = l;
1e422769 2802 }
56ee1660 2803 else {
a0d0e21e 2804 aint = (int)SvIV(sv);
1215b447 2805 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
a0d0e21e
LW		 2806 len = sizeof(int);
2807 }
6ad3d225 2808 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2809 goto nuts2;
3280af22 2810 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 2811 }
2812 break;
2813 }
2814 RETURN;
2815
7b52d656 2816 nuts:
fbcda526 2817 report_evil_fh(gv);
93189314 2818 SETERRNO(EBADF,SS_IVCHAN);
7b52d656 2819 nuts2:
a0d0e21e
LW		 2820 RETPUSHUNDEF;
2821
a0d0e21e
LW		 2822}
2823
b1c05ba5
DM		 2824
2825/* also used for: pp_getsockname() */
2826
a0d0e21e
LW		 2827PP(pp_getpeername)
2828{
20b7effb 2829 dSP;
7452cf6a 2830 const int optype = PL_op->op_type;
159b6efe 2831 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2832 IO * const io = GvIOn(gv);
7452cf6a 2833 Sock_size_t len;
a0d0e21e
LW		 2834 SV *sv;
2835 int fd;
a0d0e21e 2836
49225470 2837 if (!IoIFP(io))
a0d0e21e
LW		 2838 goto nuts;
2839
561b68a9 2840 sv = sv_2mortal(newSV(257));
748a9306 2841 (void)SvPOK_only(sv);
1e422769
PP		 2842 len = 256;
2843 SvCUR_set(sv, len);
748a9306 2844 *SvEND(sv) ='\0';
760ac839 2845 fd = PerlIO_fileno(IoIFP(io));
375ed12a
JH		 2846 if (fd < 0)
2847 goto nuts;
a0d0e21e
LW		 2848 switch (optype) {
2849 case OP_GETSOCKNAME:
6ad3d225 2850 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW		 2851 goto nuts2;
2852 break;
2853 case OP_GETPEERNAME:
6ad3d225 2854 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2855 goto nuts2;
490ab354
JH		 2856#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2857 {
2858 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";
2859 /* If the call succeeded, make sure we don't have a zeroed port/addr */
349d4f2f 2860 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2fbb330f 2861 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
490ab354 2862 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2863 goto nuts2;
490ab354
JH		 2864 }
2865 }
2866#endif
a0d0e21e
LW		 2867 break;
2868 }
13826f2c
CS		 2869#ifdef BOGUS_GETNAME_RETURN
2870 /* Interactive Unix, getpeername() and getsockname()
2871 does not return valid namelen */
1e422769
PP		 2872 if (len == BOGUS_GETNAME_RETURN)
2873 len = sizeof(struct sockaddr);
13826f2c 2874#endif
1e422769 2875 SvCUR_set(sv, len);
748a9306 2876 *SvEND(sv) ='\0';
a0d0e21e
LW		 2877 PUSHs(sv);
2878 RETURN;
2879
7b52d656 2880 nuts:
fbcda526 2881 report_evil_fh(gv);
93189314 2882 SETERRNO(EBADF,SS_IVCHAN);
7b52d656 2883 nuts2:
a0d0e21e 2884 RETPUSHUNDEF;
7627e6d0 2885}
a0d0e21e 2886
a0d0e21e 2887#endif
a0d0e21e
LW		 2888
2889/* Stat calls. */
2890
b1c05ba5
DM		 2891/* also used for: pp_lstat() */
2892
a0d0e21e
LW		 2893PP(pp_stat)
2894{
39644a26 2895 dSP;
10edeb5d 2896 GV *gv = NULL;
55dd8d50 2897 IO *io = NULL;
1c23e2bd 2898 U8 gimme;
a0d0e21e 2899 I32 max = 13;
109c43ed 2900 SV* sv;
a0d0e21e 2901
109c43ed
FC		 2902 if (PL_op->op_flags & OPf_REF ? (gv = cGVOP_gv, 1)
2903 : !!(sv=POPs, gv = MAYBE_DEREF_GV(sv))) {
8a4e5b40 2904 if (PL_op->op_type == OP_LSTAT) {
5d3e98de 2905 if (gv != PL_defgv) {
5d329e6e 2906 do_fstat_warning_check:
a2a5de95 2907 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
147e3846 2908 "lstat() on filehandle%s%" SVf,
93fad930
FC		 2909 gv ? " " : "",
2910 SVfARG(gv
bf29d05f
BF		 2911 ? sv_2mortal(newSVhek(GvENAME_HEK(gv)))
2912 : &PL_sv_no));
5d3e98de 2913 } else if (PL_laststype != OP_LSTAT)
b042df57 2914 /* diag_listed_as: The stat preceding %s wasn't an lstat */
8a4e5b40 2915 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
8a4e5b40
DD		 2916 }
2917
2dd78f96 2918 if (gv != PL_defgv) {
b8413ac3 2919 bool havefp;
0d5064f1 2920 do_fstat_have_io:
b8413ac3 2921 havefp = FALSE;
3280af22 2922 PL_laststype = OP_STAT;
0d5064f1 2923 PL_statgv = gv ? gv : (GV *)io;
60e13354 2924 SvPVCLEAR(PL_statname);
5228a96c 2925 if(gv) {
ad02613c 2926 io = GvIO(gv);
0d5064f1
FC		 2927 }
2928 if (io) {
5228a96c 2929 if (IoIFP(io)) {
375ed12a
JH		 2930 int fd = PerlIO_fileno(IoIFP(io));
2931 if (fd < 0) {
2932 PL_laststatval = -1;
2933 SETERRNO(EBADF,RMS_IFI);
2934 } else {
2935 PL_laststatval = PerlLIO_fstat(fd, &PL_statcache);
2936 havefp = TRUE;
2937 }
5228a96c 2938 } else if (IoDIRP(io)) {
5228a96c 2939 PL_laststatval =
3497a01f 2940 PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache);
8080e3c8 2941 havefp = TRUE;
5228a96c
SP		 2942 } else {
2943 PL_laststatval = -1;
2944 }
5228a96c 2945 }
05bb32d2 2946 else PL_laststatval = -1;
daa30a68 2947 if (PL_laststatval < 0 && !havefp) report_evil_fh(gv);
5228a96c
SP		 2948 }
2949
9ddeeac9 2950 if (PL_laststatval < 0) {
a0d0e21e 2951 max = 0;
9ddeeac9 2952 }
a0d0e21e
LW		 2953 }
2954 else {
7cb3f959 2955 const char *file;
109c43ed 2956 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2957 io = MUTABLE_IO(SvRV(sv));
ad02613c
SP		 2958 if (PL_op->op_type == OP_LSTAT)
2959 goto do_fstat_warning_check;
2960 goto do_fstat_have_io;
2961 }
2962
4bac9ae4 2963 SvTAINTED_off(PL_statname); /* previous tainting irrelevant */
109c43ed 2964 sv_setpv(PL_statname, SvPV_nomg_const_nolen(sv));
a0714e2c 2965 PL_statgv = NULL;
533c011a 2966 PL_laststype = PL_op->op_type;
7cb3f959 2967 file = SvPV_nolen_const(PL_statname);
533c011a 2968 if (PL_op->op_type == OP_LSTAT)
7cb3f959 2969 PL_laststatval = PerlLIO_lstat(file, &PL_statcache);
a0d0e21e 2970 else
7cb3f959 2971 PL_laststatval = PerlLIO_stat(file, &PL_statcache);
3280af22 2972 if (PL_laststatval < 0) {
7cb3f959 2973 if (ckWARN(WARN_NEWLINE) && should_warn_nl(file)) {
5d37acd6
DM		 2974 /* PL_warn_nl is constant */
2975 GCC_DIAG_IGNORE(-Wformat-nonliteral);
9014280d 2976 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
5d37acd6
DM		 2977 GCC_DIAG_RESTORE;
2978 }
a0d0e21e
LW		 2979 max = 0;
2980 }
2981 }
2982
54310121
PP		 2983 gimme = GIMME_V;
2984 if (gimme != G_ARRAY) {
2985 if (gimme != G_VOID)
2986 XPUSHs(boolSV(max));
2987 RETURN;
a0d0e21e
LW		 2988 }
2989 if (max) {
36477c24
PP		 2990 EXTEND(SP, max);
2991 EXTEND_MORTAL(max);
6e449a3a 2992 mPUSHi(PL_statcache.st_dev);
8d8cba88
TC		 2993#if ST_INO_SIZE > IVSIZE
2994 mPUSHn(PL_statcache.st_ino);
2995#else
2996# if ST_INO_SIGN <= 0
6e449a3a 2997 mPUSHi(PL_statcache.st_ino);
8d8cba88
TC		 2998# else
2999 mPUSHu(PL_statcache.st_ino);
3000# endif
3001#endif
6e449a3a
MHM		 3002 mPUSHu(PL_statcache.st_mode);
3003 mPUSHu(PL_statcache.st_nlink);
dfff4baf
BF		 3004
3005 sv_setuid(PUSHmortal, PL_statcache.st_uid);
3006 sv_setgid(PUSHmortal, PL_statcache.st_gid);
3007
cbdc8872 3008#ifdef USE_STAT_RDEV
6e449a3a 3009 mPUSHi(PL_statcache.st_rdev);
cbdc8872 3010#else
84bafc02 3011 PUSHs(newSVpvs_flags("", SVs_TEMP));
cbdc8872 3012#endif
146174a9 3013#if Off_t_size > IVSIZE
6e449a3a 3014 mPUSHn(PL_statcache.st_size);
146174a9 3015#else
6e449a3a 3016 mPUSHi(PL_statcache.st_size);
146174a9 3017#endif
cbdc8872 3018#ifdef BIG_TIME
6e449a3a
MHM		 3019 mPUSHn(PL_statcache.st_atime);
3020 mPUSHn(PL_statcache.st_mtime);
3021 mPUSHn(PL_statcache.st_ctime);
cbdc8872 3022#else
6e449a3a
MHM		 3023 mPUSHi(PL_statcache.st_atime);
3024 mPUSHi(PL_statcache.st_mtime);
3025 mPUSHi(PL_statcache.st_ctime);
cbdc8872 3026#endif
a0d0e21e 3027#ifdef USE_STAT_BLOCKS
6e449a3a
MHM		 3028 mPUSHu(PL_statcache.st_blksize);
3029 mPUSHu(PL_statcache.st_blocks);
a0d0e21e 3030#else
84bafc02
NC		 3031 PUSHs(newSVpvs_flags("", SVs_TEMP));
3032 PUSHs(newSVpvs_flags("", SVs_TEMP));
a0d0e21e
LW		 3033#endif
3034 }
3035 RETURN;
3036}
3037
6c48f025
NC		 3038/* All filetest ops avoid manipulating the perl stack pointer in their main
3039 bodies (since commit d2c4d2d1e22d3125), and return using either
3040 S_ft_return_false() or S_ft_return_true(). These two helper functions are
3041 the only two which manipulate the perl stack. To ensure that no stack
3042 manipulation macros are used, the filetest ops avoid defining a local copy
3043 of the stack pointer with dSP. */
3044
8db8f6b6
FC		 3045/* If the next filetest is stacked up with this one
3046 (PL_op->op_private & OPpFT_STACKING), we leave
3047 the original argument on the stack for success,
3048 and skip the stacked operators on failure.
3049 The next few macros/functions take care of this.
3050*/
3051
3052static OP *
9a6b02e8 3053S_ft_return_false(pTHX_ SV *ret) {
8db8f6b6 3054 OP *next = NORMAL;
697f9d37
NC		 3055 dSP;
3056
226b9201 3057 if (PL_op->op_flags & OPf_REF) XPUSHs(ret);
8db8f6b6
FC		 3058 else SETs(ret);
3059 PUTBACK;
697f9d37 3060
9a6b02e8
NC		 3061 if (PL_op->op_private & OPpFT_STACKING) {
3062 while (OP_IS_FILETEST(next->op_type)
3063 && next->op_private & OPpFT_STACKED)
3064 next = next->op_next;
3065 }
8db8f6b6
FC		 3066 return next;
3067}
3068
07ed4d4b
NC		 3069PERL_STATIC_INLINE OP *
3070S_ft_return_true(pTHX_ SV *ret) {
3071 dSP;
3072 if (PL_op->op_flags & OPf_REF)
3073 XPUSHs(PL_op->op_private & OPpFT_STACKING ? (SV *)cGVOP_gv : (ret));
3074 else if (!(PL_op->op_private & OPpFT_STACKING))
3075 SETs(ret);
3076 PUTBACK;
3077 return NORMAL;
3078}
8db8f6b6 3079
48d023d6
NC		 3080#define FT_RETURNNO return S_ft_return_false(aTHX_ &PL_sv_no)
3081#define FT_RETURNUNDEF return S_ft_return_false(aTHX_ &PL_sv_undef)
3082#define FT_RETURNYES return S_ft_return_true(aTHX_ &PL_sv_yes)
8db8f6b6 3083
6f1401dc 3084#define tryAMAGICftest_MG(chr) STMT_START { \
d2f67720 3085 if ( (SvFLAGS(*PL_stack_sp) & (SVf_ROK|SVs_GMG)) \
8db8f6b6
FC		 3086 && PL_op->op_flags & OPf_KIDS) { \
3087 OP *next = S_try_amagic_ftest(aTHX_ chr); \
3088 if (next) return next; \
3089 } \
6f1401dc
DM		 3090 } STMT_END
3091
8db8f6b6 3092STATIC OP *
6f1401dc 3093S_try_amagic_ftest(pTHX_ char chr) {
d2f67720 3094 SV *const arg = *PL_stack_sp;
6f1401dc
DM		 3095
3096 assert(chr != '?');
c5780028 3097 if (!(PL_op->op_private & OPpFT_STACKING)) SvGETMAGIC(arg);
6f1401dc 3098
d2f67720 3099 if (SvAMAGIC(arg))
6f1401dc
DM		 3100 {
3101 const char tmpchr = chr;
6f1401dc
DM		 3102 SV * const tmpsv = amagic_call(arg,
3103 newSVpvn_flags(&tmpchr, 1, SVs_TEMP),
3104 ftest_amg, AMGf_unary);
3105
3106 if (!tmpsv)
8db8f6b6 3107 return NULL;
6f1401dc 3108
48d023d6
NC		 3109 return SvTRUE(tmpsv)
3110 ? S_ft_return_true(aTHX_ tmpsv) : S_ft_return_false(aTHX_ tmpsv);
6f1401dc 3111 }
8db8f6b6 3112 return NULL;
6f1401dc
DM		 3113}
3114
3115
b1c05ba5
DM		 3116/* also used for: pp_fteexec() pp_fteread() pp_ftewrite() pp_ftrexec()
3117 * pp_ftrwrite() */
3118
a0d0e21e
LW		 3119PP(pp_ftrread)
3120{
9cad6237 3121 I32 result;
af9e49b4 3122 /* Not const, because things tweak this below. Not bool, because there's
f3574cc6 3123 no guarantee that OPpFT_ACCESS is <= CHAR_MAX */
af9e49b4
NC		 3124#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
3125 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
3126 /* Giving some sort of initial value silences compilers. */
3127# ifdef R_OK
3128 int access_mode = R_OK;
3129# else
3130 int access_mode = 0;
3131# endif
5ff3f7a4 3132#else
af9e49b4
NC		 3133 /* access_mode is never used, but leaving use_access in makes the
3134 conditional compiling below much clearer. */
3135 I32 use_access = 0;
5ff3f7a4 3136#endif
2dcac756 3137 Mode_t stat_mode = S_IRUSR;
a0d0e21e 3138
af9e49b4 3139 bool effective = FALSE;
07fe7c6a 3140 char opchar = '?';
af9e49b4 3141
7fb13887
BM		 3142 switch (PL_op->op_type) {
3143 case OP_FTRREAD: opchar = 'R'; break;
3144 case OP_FTRWRITE: opchar = 'W'; break;
3145 case OP_FTREXEC: opchar = 'X'; break;
3146 case OP_FTEREAD: opchar = 'r'; break;
3147 case OP_FTEWRITE: opchar = 'w'; break;
3148 case OP_FTEEXEC: opchar = 'x'; break;
3149 }
6f1401dc 3150 tryAMAGICftest_MG(opchar);
7fb13887 3151
af9e49b4
NC		 3152 switch (PL_op->op_type) {
3153 case OP_FTRREAD:
3154#if !(defined(HAS_ACCESS) && defined(R_OK))
3155 use_access = 0;
3156#endif
3157 break;
3158
3159 case OP_FTRWRITE:
5ff3f7a4 3160#if defined(HAS_ACCESS) && defined(W_OK)
af9e49b4 3161 access_mode = W_OK;
5ff3f7a4 3162#else
af9e49b4 3163 use_access = 0;
5ff3f7a4 3164#endif
af9e49b4
NC		 3165 stat_mode = S_IWUSR;
3166 break;
a0d0e21e 3167
af9e49b4 3168 case OP_FTREXEC:
5ff3f7a4 3169#if defined(HAS_ACCESS) && defined(X_OK)
af9e49b4 3170 access_mode = X_OK;
5ff3f7a4 3171#else
af9e49b4 3172 use_access = 0;
5ff3f7a4 3173#endif
af9e49b4
NC		 3174 stat_mode = S_IXUSR;
3175 break;
a0d0e21e 3176
af9e49b4 3177 case OP_FTEWRITE:
faee0e31 3178#ifdef PERL_EFF_ACCESS
af9e49b4 3179 access_mode = W_OK;
5ff3f7a4 3180#endif
af9e49b4 3181 stat_mode = S_IWUSR;
924ba076 3182 /* FALLTHROUGH */
a0d0e21e 3183
af9e49b4
NC		 3184 case OP_FTEREAD:
3185#ifndef PERL_EFF_ACCESS
3186 use_access = 0;
3187#endif
3188 effective = TRUE;
3189 break;
3190
af9e49b4 3191 case OP_FTEEXEC:
faee0e31 3192#ifdef PERL_EFF_ACCESS
b376053d 3193 access_mode = X_OK;
5ff3f7a4 3194#else
af9e49b4 3195 use_access = 0;
5ff3f7a4 3196#endif
af9e49b4
NC		 3197 stat_mode = S_IXUSR;
3198 effective = TRUE;
3199 break;
3200 }
a0d0e21e 3201
af9e49b4
NC		 3202 if (use_access) {
3203#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
d2f67720 3204 const char *name = SvPV_nolen(*PL_stack_sp);
af9e49b4
NC		 3205 if (effective) {
3206# ifdef PERL_EFF_ACCESS
3207 result = PERL_EFF_ACCESS(name, access_mode);
3208# else
3209 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
3210 OP_NAME(PL_op));
3211# endif
3212 }
3213 else {
3214# ifdef HAS_ACCESS
3215 result = access(name, access_mode);
3216# else
3217 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
3218# endif
3219 }
5ff3f7a4 3220 if (result == 0)
d2c4d2d1 3221 FT_RETURNYES;
5ff3f7a4 3222 if (result < 0)
d2c4d2d1
FC		 3223 FT_RETURNUNDEF;
3224 FT_RETURNNO;
af9e49b4 3225#endif
22865c03 3226 }
af9e49b4 3227
40c852de 3228 result = my_stat_flags(0);
a0d0e21e 3229 if (result < 0)
8db8f6b6 3230 FT_RETURNUNDEF;
af9e49b4 3231 if (cando(stat_mode, effective, &PL_statcache))
8db8f6b6
FC		 3232 FT_RETURNYES;
3233 FT_RETURNNO;
a0d0e21e
LW		 3234}
3235
b1c05ba5
DM		 3236
3237/* also used for: pp_ftatime() pp_ftctime() pp_ftmtime() pp_ftsize() */
3238
a0d0e21e
LW		 3239PP(pp_ftis)
3240{
fbb0b3b3 3241 I32 result;
d7f0a2f4 3242 const int op_type = PL_op->op_type;
07fe7c6a 3243 char opchar = '?';
07fe7c6a
BM		 3244
3245 switch (op_type) {
3246 case OP_FTIS: opchar = 'e'; break;
3247 case OP_FTSIZE: opchar = 's'; break;
3248 case OP_FTMTIME: opchar = 'M'; break;
3249 case OP_FTCTIME: opchar = 'C'; break;
3250 case OP_FTATIME: opchar = 'A'; break;
3251 }
6f1401dc 3252 tryAMAGICftest_MG(opchar);
07fe7c6a 3253
40c852de 3254 result = my_stat_flags(0);
a0d0e21e 3255 if (result < 0)
8db8f6b6 3256 FT_RETURNUNDEF;
d7f0a2f4 3257 if (op_type == OP_FTIS)
8db8f6b6 3258 FT_RETURNYES;
957b0e1d 3259 {
d7f0a2f4
NC		 3260 /* You can't dTARGET inside OP_FTIS, because you'll get
3261 "panic: pad_sv po" - the op is not flagged to have a target. */
957b0e1d 3262 dTARGET;
d7f0a2f4 3263 switch (op_type) {
957b0e1d
NC		 3264 case OP_FTSIZE:
3265#if Off_t_size > IVSIZE
8db8f6b6 3266 sv_setnv(TARG, (NV)PL_statcache.st_size);
957b0e1d 3267#else
8db8f6b6 3268 sv_setiv(TARG, (IV)PL_statcache.st_size);
957b0e1d
NC		 3269#endif
3270 break;
3271 case OP_FTMTIME:
8db8f6b6
FC		 3272 sv_setnv(TARG,
3273 ((NV)PL_basetime - PL_statcache.st_mtime) / 86400.0 );
957b0e1d
NC		 3274 break;
3275 case OP_FTATIME:
8db8f6b6
FC		 3276 sv_setnv(TARG,
3277 ((NV)PL_basetime - PL_statcache.st_atime) / 86400.0 );
957b0e1d
NC		 3278 break;
3279 case OP_FTCTIME:
8db8f6b6
FC		 3280 sv_setnv(TARG,
3281 ((NV)PL_basetime - PL_statcache.st_ctime) / 86400.0 );
957b0e1d
NC		 3282 break;
3283 }
8db8f6b6 3284 SvSETMAGIC(TARG);
48d023d6
NC		 3285 return SvTRUE_nomg(TARG)
3286 ? S_ft_return_true(aTHX_ TARG) : S_ft_return_false(aTHX_ TARG);
957b0e1d 3287 }
a0d0e21e
LW		 3288}
3289
b1c05ba5
DM		 3290
3291/* also used for: pp_ftblk() pp_ftchr() pp_ftdir() pp_fteowned()
3292 * pp_ftfile() pp_ftpipe() pp_ftsgid() pp_ftsock()
3293 * pp_ftsuid() pp_ftsvtx() pp_ftzero() */
3294
a0d0e21e
LW		 3295PP(pp_ftrowned)
3296{
fbb0b3b3 3297 I32 result;
07fe7c6a 3298 char opchar = '?';
17ad201a 3299
7fb13887
BM		 3300 switch (PL_op->op_type) {
3301 case OP_FTROWNED: opchar = 'O'; break;
3302 case OP_FTEOWNED: opchar = 'o'; break;
3303 case OP_FTZERO: opchar = 'z'; break;
3304 case OP_FTSOCK: opchar = 'S'; break;
3305 case OP_FTCHR: opchar = 'c'; break;
3306 case OP_FTBLK: opchar = 'b'; break;
3307 case OP_FTFILE: opchar = 'f'; break;
3308 case OP_FTDIR: opchar = 'd'; break;
3309 case OP_FTPIPE: opchar = 'p'; break;
3310 case OP_FTSUID: opchar = 'u'; break;
3311 case OP_FTSGID: opchar = 'g'; break;
3312 case OP_FTSVTX: opchar = 'k'; break;
3313 }
6f1401dc 3314 tryAMAGICftest_MG(opchar);
7fb13887 3315
17ad201a
NC		 3316 /* I believe that all these three are likely to be defined on most every
3317 system these days. */
3318#ifndef S_ISUID
c410dd6a 3319 if(PL_op->op_type == OP_FTSUID) {
8db8f6b6 3320 FT_RETURNNO;
c410dd6a 3321 }
17ad201a
NC		 3322#endif
3323#ifndef S_ISGID
c410dd6a 3324 if(PL_op->op_type == OP_FTSGID) {
8db8f6b6 3325 FT_RETURNNO;
c410dd6a 3326 }
17ad201a
NC		 3327#endif
3328#ifndef S_ISVTX
c410dd6a 3329 if(PL_op->op_type == OP_FTSVTX) {
8db8f6b6 3330 FT_RETURNNO;
c410dd6a 3331 }
17ad201a
NC		 3332#endif
3333
40c852de 3334 result = my_stat_flags(0);
a0d0e21e 3335 if (result < 0)
8db8f6b6 3336 FT_RETURNUNDEF;
f1cb2d48
NC		 3337 switch (PL_op->op_type) {
3338 case OP_FTROWNED:
985213f2 3339 if (PL_statcache.st_uid == PerlProc_getuid())
8db8f6b6 3340 FT_RETURNYES;
f1cb2d48
NC		 3341 break;
3342 case OP_FTEOWNED:
985213f2 3343 if (PL_statcache.st_uid == PerlProc_geteuid())
8db8f6b6 3344 FT_RETURNYES;
f1cb2d48
NC		 3345 break;
3346 case OP_FTZERO:
3347 if (PL_statcache.st_size == 0)
8db8f6b6 3348 FT_RETURNYES;
f1cb2d48
NC		 3349 break;
3350 case OP_FTSOCK:
3351 if (S_ISSOCK(PL_statcache.st_mode))
8db8f6b6 3352 FT_RETURNYES;
f1cb2d48
NC		 3353 break;