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make the sysread()/syswrite/() etc :utf8 handle warnings default
[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
FC
464 if (SvROK(exsv) && !PL_warnhook)
465 Perl_warn(aTHX_ "%"SVf, SVfARG(exsv));
466 else warn_sv(exsv);
a0d0e21e
LW
467 RETSETYES;
468}
469
470PP(pp_die)
471{
20b7effb 472 dSP; dMARK;
c5df3096 473 SV *exsv;
06bf62c7 474 STRLEN len;
96e176bf 475#ifdef VMS
97124ef6
FC
476 VMSISH_HUSHED =
477 VMSISH_HUSHED || (PL_curcop->op_private & OPpHUSH_VMSISH);
96e176bf 478#endif
a0d0e21e
LW
479 if (SP - MARK != 1) {
480 dTARGET;
3280af22 481 do_join(TARG, &PL_sv_no, MARK, SP);
c5df3096 482 exsv = TARG;
a0d0e21e
LW
483 SP = MARK + 1;
484 }
485 else {
c5df3096 486 exsv = TOPs;
a0d0e21e 487 }
c5df3096 488
72d74926 489 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
c5df3096
Z
490 /* well-formed exception supplied */
491 }
eed484f9
DD
492 else {
493 SV * const errsv = ERRSV;
8b3945e7 494 SvGETMAGIC(errsv);
eed484f9
DD
495 if (SvROK(errsv)) {
496 exsv = errsv;
497 if (sv_isobject(exsv)) {
498 HV * const stash = SvSTASH(SvRV(exsv));
499 GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
500 if (gv) {
501 SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
502 SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
503 EXTEND(SP, 3);
504 PUSHMARK(SP);
505 PUSHs(exsv);
506 PUSHs(file);
507 PUSHs(line);
508 PUTBACK;
509 call_sv(MUTABLE_SV(GvCV(gv)),
510 G_SCALAR|G_EVAL|G_KEEPERR);
511 exsv = sv_mortalcopy(*PL_stack_sp--);
512 }
05423cc9 513 }
4e6ea2c3 514 }
8b3945e7 515 else if (SvPOK(errsv) && SvCUR(errsv)) {
eed484f9
DD
516 exsv = sv_mortalcopy(errsv);
517 sv_catpvs(exsv, "\t...propagated");
518 }
519 else {
520 exsv = newSVpvs_flags("Died", SVs_TEMP);
521 }
c5df3096 522 }
81d52ecd 523 die_sv(exsv);
a25b5927 524 NOT_REACHED; /* NOTREACHED */
263fdd5b 525 return NULL; /* avoid missing return from non-void function warning */
a0d0e21e
LW
526}
527
528/* I/O. */
529
d682515d 530OP *
3e0cb5de 531Perl_tied_method(pTHX_ SV *methname, SV **sp, SV *const sv,
d682515d 532 const MAGIC *const mg, const U32 flags, U32 argc, ...)
6bcca55b 533{
d8ef3a16
DM
534 SV **orig_sp = sp;
535 I32 ret_args;
052a7c76 536 SSize_t extend_size;
d8ef3a16 537
d682515d 538 PERL_ARGS_ASSERT_TIED_METHOD;
6bcca55b
NC
539
540 /* Ensure that our flag bits do not overlap. */
6d59e610
LM
541 STATIC_ASSERT_STMT((TIED_METHOD_MORTALIZE_NOT_NEEDED & G_WANT) == 0);
542 STATIC_ASSERT_STMT((TIED_METHOD_ARGUMENTS_ON_STACK & G_WANT) == 0);
543 STATIC_ASSERT_STMT((TIED_METHOD_SAY & G_WANT) == 0);
6bcca55b 544
d8ef3a16
DM
545 PUTBACK; /* sp is at *foot* of args, so this pops args from old stack */
546 PUSHSTACKi(PERLSI_MAGIC);
052a7c76 547 /* extend for object + args. If argc might wrap/truncate when cast
e9548aa6
DM
548 * to SSize_t and incremented, set to -1, which will trigger a panic in
549 * EXTEND().
550 * The weird way this is written is because g++ is dumb enough to
551 * warn "comparison is always false" on something like:
552 *
553 * sizeof(a) >= sizeof(b) && a >= B_t_MAX -1
554 *
555 * (where the LH condition is false)
556 */
052a7c76 557 extend_size =
e9548aa6 558 (argc > (sizeof(argc) >= sizeof(SSize_t) ? SSize_t_MAX - 1 : argc))
052a7c76
DM
559 ? -1 : (SSize_t)argc + 1;
560 EXTEND(SP, extend_size);
6bcca55b 561 PUSHMARK(sp);
d682515d 562 PUSHs(SvTIED_obj(sv, mg));
d8ef3a16
DM
563 if (flags & TIED_METHOD_ARGUMENTS_ON_STACK) {
564 Copy(orig_sp + 2, sp + 1, argc, SV*); /* copy args to new stack */
1a8c1d59 565 sp += argc;
d8ef3a16 566 }
1a8c1d59 567 else if (argc) {
d682515d
NC
568 const U32 mortalize_not_needed
569 = flags & TIED_METHOD_MORTALIZE_NOT_NEEDED;
6bcca55b 570 va_list args;
0d5509eb 571 va_start(args, argc);
6bcca55b
NC
572 do {
573 SV *const arg = va_arg(args, SV *);
574 if(mortalize_not_needed)
575 PUSHs(arg);
576 else
577 mPUSHs(arg);
578 } while (--argc);
579 va_end(args);
580 }
581
582 PUTBACK;
d682515d 583 ENTER_with_name("call_tied_method");
94bc412f
NC
584 if (flags & TIED_METHOD_SAY) {
585 /* local $\ = "\n" */
586 SAVEGENERICSV(PL_ors_sv);
587 PL_ors_sv = newSVpvs("\n");
588 }
3e0cb5de 589 ret_args = call_sv(methname, (flags & G_WANT)|G_METHOD_NAMED);
d8ef3a16
DM
590 SPAGAIN;
591 orig_sp = sp;
592 POPSTACK;
593 SPAGAIN;
594 if (ret_args) { /* copy results back to original stack */
595 EXTEND(sp, ret_args);
596 Copy(orig_sp - ret_args + 1, sp + 1, ret_args, SV*);
597 sp += ret_args;
598 PUTBACK;
599 }
d682515d 600 LEAVE_with_name("call_tied_method");
6bcca55b
NC
601 return NORMAL;
602}
603
d682515d
NC
604#define tied_method0(a,b,c,d) \
605 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,0)
606#define tied_method1(a,b,c,d,e) \
607 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,1,e)
608#define tied_method2(a,b,c,d,e,f) \
609 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,2,e,f)
6bcca55b 610
a0d0e21e
LW
611PP(pp_open)
612{
20b7effb 613 dSP;
a567e93b
NIS
614 dMARK; dORIGMARK;
615 dTARGET;
a0d0e21e 616 SV *sv;
5b468f54 617 IO *io;
5c144d81 618 const char *tmps;
a0d0e21e 619 STRLEN len;
a567e93b 620 bool ok;
a0d0e21e 621
159b6efe 622 GV * const gv = MUTABLE_GV(*++MARK);
c4420975 623
13be902c 624 if (!isGV(gv) && !(SvTYPE(gv) == SVt_PVLV && isGV_with_GP(gv)))
cea2e8a9 625 DIE(aTHX_ PL_no_usym, "filehandle");
abc718f2 626
a79db61d 627 if ((io = GvIOp(gv))) {
a5e1d062 628 const MAGIC *mg;
36477c24 629 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
853846ea 630
a2a5de95 631 if (IoDIRP(io))
d1d15184 632 Perl_ck_warner_d(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
d0c0e7dd
FC
633 "Opening dirhandle %"HEKf" also as a file",
634 HEKfARG(GvENAME_HEK(gv)));
abc718f2 635
ad64d0ec 636 mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
c4420975
AL
637 if (mg) {
638 /* Method's args are same as ours ... */
639 /* ... except handle is replaced by the object */
3e0cb5de 640 return Perl_tied_method(aTHX_ SV_CONST(OPEN), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC
641 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
642 sp - mark);
c4420975 643 }
4592e6ca
NIS
644 }
645
a567e93b
NIS
646 if (MARK < SP) {
647 sv = *++MARK;
648 }
649 else {
35a08ec7 650 sv = GvSVn(gv);
a567e93b
NIS
651 }
652
5c144d81 653 tmps = SvPV_const(sv, len);
d5eb9a46 654 ok = do_open6(gv, tmps, len, NULL, MARK+1, (SP-MARK));
a567e93b
NIS
655 SP = ORIGMARK;
656 if (ok)
3280af22
NIS
657 PUSHi( (I32)PL_forkprocess );
658 else if (PL_forkprocess == 0) /* we are a new child */
a0d0e21e
LW
659 PUSHi(0);
660 else
661 RETPUSHUNDEF;
662 RETURN;
663}
664
665PP(pp_close)
666{
20b7effb 667 dSP;
30901a8a
FC
668 GV * const gv =
669 MAXARG == 0 || (!TOPs && !POPs) ? PL_defoutgv : MUTABLE_GV(POPs);
1d603a67 670
2addaaf3
NC
671 if (MAXARG == 0)
672 EXTEND(SP, 1);
673
a79db61d
AL
674 if (gv) {
675 IO * const io = GvIO(gv);
676 if (io) {
a5e1d062 677 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 678 if (mg) {
3e0cb5de 679 return tied_method0(SV_CONST(CLOSE), SP, MUTABLE_SV(io), mg);
a79db61d
AL
680 }
681 }
1d603a67 682 }
54310121 683 PUSHs(boolSV(do_close(gv, TRUE)));
a0d0e21e
LW
684 RETURN;
685}
686
687PP(pp_pipe_op)
688{
a0d0e21e 689#ifdef HAS_PIPE
9cad6237 690 dSP;
eb578fdb
KW
691 IO *rstio;
692 IO *wstio;
a0d0e21e
LW
693 int fd[2];
694
159b6efe
NC
695 GV * const wgv = MUTABLE_GV(POPs);
696 GV * const rgv = MUTABLE_GV(POPs);
a0d0e21e 697
a0d0e21e 698 rstio = GvIOn(rgv);
a0d0e21e
LW
699 if (IoIFP(rstio))
700 do_close(rgv, FALSE);
49225470
DD
701
702 wstio = GvIOn(wgv);
a0d0e21e
LW
703 if (IoIFP(wstio))
704 do_close(wgv, FALSE);
705
6ad3d225 706 if (PerlProc_pipe(fd) < 0)
a0d0e21e
LW
707 goto badexit;
708
460c8493
IZ
709 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
710 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
b5ac89c3 711 IoOFP(rstio) = IoIFP(rstio);
a0d0e21e 712 IoIFP(wstio) = IoOFP(wstio);
50952442
JH
713 IoTYPE(rstio) = IoTYPE_RDONLY;
714 IoTYPE(wstio) = IoTYPE_WRONLY;
a0d0e21e
LW
715
716 if (!IoIFP(rstio) || !IoOFP(wstio)) {
a79db61d
AL
717 if (IoIFP(rstio))
718 PerlIO_close(IoIFP(rstio));
719 else
720 PerlLIO_close(fd[0]);
721 if (IoOFP(wstio))
722 PerlIO_close(IoOFP(wstio));
723 else
724 PerlLIO_close(fd[1]);
a0d0e21e
LW
725 goto badexit;
726 }
131d45a9 727#if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
375ed12a 728 /* ensure close-on-exec */
131d45a9
JH
729 if ((fd[0] > PL_maxsysfd && fcntl(fd[0], F_SETFD, FD_CLOEXEC) < 0) ||
730 (fd[1] > PL_maxsysfd && fcntl(fd[1], F_SETFD, FD_CLOEXEC) < 0))
375ed12a 731 goto badexit;
4771b018 732#endif
a0d0e21e
LW
733 RETPUSHYES;
734
7b52d656 735 badexit:
a0d0e21e
LW
736 RETPUSHUNDEF;
737#else
cea2e8a9 738 DIE(aTHX_ PL_no_func, "pipe");
a0d0e21e
LW
739#endif
740}
741
742PP(pp_fileno)
743{
20b7effb 744 dSP; dTARGET;
a0d0e21e
LW
745 GV *gv;
746 IO *io;
760ac839 747 PerlIO *fp;
a5e1d062 748 const MAGIC *mg;
4592e6ca 749
a0d0e21e
LW
750 if (MAXARG < 1)
751 RETPUSHUNDEF;
159b6efe 752 gv = MUTABLE_GV(POPs);
9c9f25b8 753 io = GvIO(gv);
4592e6ca 754
9c9f25b8 755 if (io
ad64d0ec 756 && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar)))
5b468f54 757 {
3e0cb5de 758 return tied_method0(SV_CONST(FILENO), SP, MUTABLE_SV(io), mg);
4592e6ca
NIS
759 }
760
67f2cc75
AC
761 if (io && IoDIRP(io)) {
762#if defined(HAS_DIRFD) || defined(HAS_DIR_DD_FD)
763 PUSHi(my_dirfd(IoDIRP(io)));
764 RETURN;
765#elif defined(ENOTSUP)
766 errno = ENOTSUP; /* Operation not supported */
767 RETPUSHUNDEF;
768#elif defined(EOPNOTSUPP)
769 errno = EOPNOTSUPP; /* Operation not supported on socket */
770 RETPUSHUNDEF;
771#else
772 errno = EINVAL; /* Invalid argument */
773 RETPUSHUNDEF;
774#endif
775 }
776
9c9f25b8 777 if (!io || !(fp = IoIFP(io))) {
c289d2f7
JH
778 /* Can't do this because people seem to do things like
779 defined(fileno($foo)) to check whether $foo is a valid fh.
51087808
NC
780
781 report_evil_fh(gv);
c289d2f7 782 */
a0d0e21e 783 RETPUSHUNDEF;
c289d2f7
JH
784 }
785
760ac839 786 PUSHi(PerlIO_fileno(fp));
a0d0e21e
LW
787 RETURN;
788}
789
790PP(pp_umask)
791{
27da23d5 792 dSP;
d7e492a4 793#ifdef HAS_UMASK
27da23d5 794 dTARGET;
761237fe 795 Mode_t anum;
a0d0e21e 796
58536d15 797 if (MAXARG < 1 || (!TOPs && !POPs)) {
b0b546b3
GA
798 anum = PerlLIO_umask(022);
799 /* setting it to 022 between the two calls to umask avoids
800 * to have a window where the umask is set to 0 -- meaning
801 * that another thread could create world-writeable files. */
802 if (anum != 022)
803 (void)PerlLIO_umask(anum);
a0d0e21e
LW
804 }
805 else
6ad3d225 806 anum = PerlLIO_umask(POPi);
a0d0e21e
LW
807 TAINT_PROPER("umask");
808 XPUSHi(anum);
809#else
a0288114 810 /* Only DIE if trying to restrict permissions on "user" (self).
eec2d3df
GS
811 * Otherwise it's harmless and more useful to just return undef
812 * since 'group' and 'other' concepts probably don't exist here. */
58536d15 813 if (MAXARG >= 1 && (TOPs||POPs) && (POPi & 0700))
cea2e8a9 814 DIE(aTHX_ "umask not implemented");
6b88bc9c 815 XPUSHs(&PL_sv_undef);
a0d0e21e
LW
816#endif
817 RETURN;
818}
819
820PP(pp_binmode)
821{
20b7effb 822 dSP;
a0d0e21e
LW
823 GV *gv;
824 IO *io;
760ac839 825 PerlIO *fp;
a0714e2c 826 SV *discp = NULL;
a0d0e21e
LW
827
828 if (MAXARG < 1)
829 RETPUSHUNDEF;
60382766 830 if (MAXARG > 1) {
16fe6d59 831 discp = POPs;
60382766 832 }
a0d0e21e 833
159b6efe 834 gv = MUTABLE_GV(POPs);
9c9f25b8 835 io = GvIO(gv);
4592e6ca 836
9c9f25b8 837 if (io) {
a5e1d062 838 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 839 if (mg) {
bc0c81ca
NC
840 /* This takes advantage of the implementation of the varargs
841 function, which I don't think that the optimiser will be able to
842 figure out. Although, as it's a static function, in theory it
843 could. */
3e0cb5de 844 return Perl_tied_method(aTHX_ SV_CONST(BINMODE), SP, MUTABLE_SV(io), mg,
d682515d
NC
845 G_SCALAR|TIED_METHOD_MORTALIZE_NOT_NEEDED,
846 discp ? 1 : 0, discp);
a79db61d 847 }
4592e6ca 848 }
a0d0e21e 849
9c9f25b8 850 if (!io || !(fp = IoIFP(io))) {
51087808 851 report_evil_fh(gv);
b5fe5ca2 852 SETERRNO(EBADF,RMS_IFI);
50f846a7
SC
853 RETPUSHUNDEF;
854 }
a0d0e21e 855
40d98b49 856 PUTBACK;
f0a78170 857 {
a79b25b7
VP
858 STRLEN len = 0;
859 const char *d = NULL;
860 int mode;
861 if (discp)
862 d = SvPV_const(discp, len);
863 mode = mode_from_discipline(d, len);
f0a78170
NC
864 if (PerlIO_binmode(aTHX_ fp, IoTYPE(io), mode, d)) {
865 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
866 if (!PerlIO_binmode(aTHX_ IoOFP(io), IoTYPE(io), mode, d)) {
867 SPAGAIN;
868 RETPUSHUNDEF;
869 }
870 }
871 SPAGAIN;
872 RETPUSHYES;
873 }
874 else {
875 SPAGAIN;
876 RETPUSHUNDEF;
38af81ff 877 }
40d98b49 878 }
a0d0e21e
LW
879}
880
881PP(pp_tie)
882{
20b7effb 883 dSP; dMARK;
a0d0e21e 884 HV* stash;
07822e36 885 GV *gv = NULL;
a0d0e21e 886 SV *sv;
1df70142 887 const I32 markoff = MARK - PL_stack_base;
e1ec3a88 888 const char *methname;
14befaf4 889 int how = PERL_MAGIC_tied;
e336de0d 890 U32 items;
c4420975 891 SV *varsv = *++MARK;
a0d0e21e 892
6b05c17a
NIS
893 switch(SvTYPE(varsv)) {
894 case SVt_PVHV:
aec0c0cc
FC
895 {
896 HE *entry;
6b05c17a 897 methname = "TIEHASH";
aec0c0cc
FC
898 if (HvLAZYDEL(varsv) && (entry = HvEITER((HV *)varsv))) {
899 HvLAZYDEL_off(varsv);
900 hv_free_ent((HV *)varsv, entry);
901 }
85fbaab2 902 HvEITER_set(MUTABLE_HV(varsv), 0);
6b05c17a 903 break;
aec0c0cc 904 }
6b05c17a
NIS
905 case SVt_PVAV:
906 methname = "TIEARRAY";
ce65bc73
FC
907 if (!AvREAL(varsv)) {
908 if (!AvREIFY(varsv))
909 Perl_croak(aTHX_ "Cannot tie unreifiable array");
910 av_clear((AV *)varsv);
911 AvREIFY_off(varsv);
912 AvREAL_on(varsv);
913 }
6b05c17a
NIS
914 break;
915 case SVt_PVGV:
13be902c 916 case SVt_PVLV:
8bb5f786 917 if (isGV_with_GP(varsv) && !SvFAKE(varsv)) {
6e592b3a
BM
918 methname = "TIEHANDLE";
919 how = PERL_MAGIC_tiedscalar;
920 /* For tied filehandles, we apply tiedscalar magic to the IO
921 slot of the GP rather than the GV itself. AMS 20010812 */
922 if (!GvIOp(varsv))
923 GvIOp(varsv) = newIO();
ad64d0ec 924 varsv = MUTABLE_SV(GvIOp(varsv));
6e592b3a
BM
925 break;
926 }
13733cde
FC
927 if (SvTYPE(varsv) == SVt_PVLV && LvTYPE(varsv) == 'y') {
928 vivify_defelem(varsv);
929 varsv = LvTARG(varsv);
930 }
924ba076 931 /* FALLTHROUGH */
6b05c17a
NIS
932 default:
933 methname = "TIESCALAR";
14befaf4 934 how = PERL_MAGIC_tiedscalar;
6b05c17a
NIS
935 break;
936 }
e336de0d 937 items = SP - MARK++;
a91d1d42 938 if (sv_isobject(*MARK)) { /* Calls GET magic. */
d343c3ef 939 ENTER_with_name("call_TIE");
e788e7d3 940 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 941 PUSHMARK(SP);
eb160463 942 EXTEND(SP,(I32)items);
e336de0d
GS
943 while (items--)
944 PUSHs(*MARK++);
945 PUTBACK;
864dbfa3 946 call_method(methname, G_SCALAR);
301e8125 947 }
6b05c17a 948 else {
086d2913
NC
949 /* Can't use call_method here, else this: fileno FOO; tie @a, "FOO"
950 * will attempt to invoke IO::File::TIEARRAY, with (best case) the
951 * wrong error message, and worse case, supreme action at a distance.
952 * (Sorry obfuscation writers. You're not going to be given this one.)
6b05c17a 953 */
4886938f
BF
954 stash = gv_stashsv(*MARK, 0);
955 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
35c1215d 956 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
a91d1d42 957 methname, SVfARG(SvOK(*MARK) ? *MARK : &PL_sv_no));
6b05c17a 958 }
d343c3ef 959 ENTER_with_name("call_TIE");
e788e7d3 960 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 961 PUSHMARK(SP);
eb160463 962 EXTEND(SP,(I32)items);
e336de0d
GS
963 while (items--)
964 PUSHs(*MARK++);
965 PUTBACK;
ad64d0ec 966 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
6b05c17a 967 }
a0d0e21e
LW
968 SPAGAIN;
969
970 sv = TOPs;
d3acc0f7 971 POPSTACK;
a0d0e21e 972 if (sv_isobject(sv)) {
33c27489 973 sv_unmagic(varsv, how);
ae21d580 974 /* Croak if a self-tie on an aggregate is attempted. */
b881518d 975 if (varsv == SvRV(sv) &&
d87ebaca
YST
976 (SvTYPE(varsv) == SVt_PVAV ||
977 SvTYPE(varsv) == SVt_PVHV))
ae21d580
JH
978 Perl_croak(aTHX_
979 "Self-ties of arrays and hashes are not supported");
a0714e2c 980 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
a0d0e21e 981 }
d343c3ef 982 LEAVE_with_name("call_TIE");
3280af22 983 SP = PL_stack_base + markoff;
a0d0e21e
LW
984 PUSHs(sv);
985 RETURN;
986}
987
b1c05ba5
DM
988
989/* also used for: pp_dbmclose() */
990
a0d0e21e
LW
991PP(pp_untie)
992{
20b7effb 993 dSP;
5b468f54 994 MAGIC *mg;
33c27489 995 SV *sv = POPs;
1df70142 996 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 997 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
55497cff 998
ca0d4ed9 999 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
5b468f54
AMS
1000 RETPUSHYES;
1001
13733cde
FC
1002 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y' &&
1003 !(sv = defelem_target(sv, NULL))) RETPUSHUNDEF;
1004
65eba18f 1005 if ((mg = SvTIED_mg(sv, how))) {
1b6737cc 1006 SV * const obj = SvRV(SvTIED_obj(sv, mg));
fa2b88e0 1007 if (obj) {
c4420975 1008 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
0bd48802 1009 CV *cv;
c4420975 1010 if (gv && isGV(gv) && (cv = GvCV(gv))) {
fa2b88e0 1011 PUSHMARK(SP);
c33ef3ac 1012 PUSHs(SvTIED_obj(MUTABLE_SV(gv), mg));
6e449a3a 1013 mXPUSHi(SvREFCNT(obj) - 1);
fa2b88e0 1014 PUTBACK;
d343c3ef 1015 ENTER_with_name("call_UNTIE");
ad64d0ec 1016 call_sv(MUTABLE_SV(cv), G_VOID);
d343c3ef 1017 LEAVE_with_name("call_UNTIE");
fa2b88e0
JS
1018 SPAGAIN;
1019 }
a2a5de95
NC
1020 else if (mg && SvREFCNT(obj) > 1) {
1021 Perl_ck_warner(aTHX_ packWARN(WARN_UNTIE),
1022 "untie attempted while %"UVuf" inner references still exist",
1023 (UV)SvREFCNT(obj) - 1 ) ;
c4420975 1024 }
cbdc8872
PP
1025 }
1026 }
38193a09 1027 sv_unmagic(sv, how) ;
55497cff 1028 RETPUSHYES;
a0d0e21e
LW
1029}
1030
c07a80fd
PP
1031PP(pp_tied)
1032{
39644a26 1033 dSP;
1b6737cc 1034 const MAGIC *mg;
b3cf4821 1035 dTOPss;
1df70142 1036 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 1037 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
5b468f54 1038
4be76e1f 1039 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
b3cf4821 1040 goto ret_undef;
c07a80fd 1041
13733cde 1042 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y' &&
b3cf4821 1043 !(sv = defelem_target(sv, NULL))) goto ret_undef;
13733cde 1044
155aba94 1045 if ((mg = SvTIED_mg(sv, how))) {
b3cf4821
DD
1046 SETs(SvTIED_obj(sv, mg));
1047 return NORMAL; /* PUTBACK not needed, pp_tied never moves SP */
c07a80fd 1048 }
b3cf4821
DD
1049 ret_undef:
1050 SETs(&PL_sv_undef);
1051 return NORMAL;
c07a80fd
PP
1052}
1053
a0d0e21e
LW
1054PP(pp_dbmopen)
1055{
20b7effb 1056 dSP;
a0d0e21e
LW
1057 dPOPPOPssrl;
1058 HV* stash;
07822e36 1059 GV *gv = NULL;
a0d0e21e 1060
85fbaab2 1061 HV * const hv = MUTABLE_HV(POPs);
84bafc02 1062 SV * const sv = newSVpvs_flags("AnyDBM_File", SVs_TEMP);
da51bb9b 1063 stash = gv_stashsv(sv, 0);
8ebc5c01 1064 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
a0d0e21e 1065 PUTBACK;
864dbfa3 1066 require_pv("AnyDBM_File.pm");
a0d0e21e 1067 SPAGAIN;
eff494dd 1068 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH")))
cea2e8a9 1069 DIE(aTHX_ "No dbm on this machine");
a0d0e21e
LW
1070 }
1071
57d3b86d 1072 ENTER;
924508f0 1073 PUSHMARK(SP);
6b05c17a 1074
924508f0 1075 EXTEND(SP, 5);
a0d0e21e
LW
1076 PUSHs(sv);
1077 PUSHs(left);
1078 if (SvIV(right))
6e449a3a 1079 mPUSHu(O_RDWR|O_CREAT);
a0d0e21e 1080 else
480e0d3c 1081 {
6e449a3a 1082 mPUSHu(O_RDWR);
480e0d3c
FC
1083 if (!SvOK(right)) right = &PL_sv_no;
1084 }
a0d0e21e 1085 PUSHs(right);
57d3b86d 1086 PUTBACK;
ad64d0ec 1087 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
a0d0e21e
LW
1088 SPAGAIN;
1089
1090 if (!sv_isobject(TOPs)) {
924508f0
GS
1091 SP--;
1092 PUSHMARK(SP);
a0d0e21e
LW
1093 PUSHs(sv);
1094 PUSHs(left);
6e449a3a 1095 mPUSHu(O_RDONLY);
a0d0e21e 1096 PUSHs(right);
a0d0e21e 1097 PUTBACK;
ad64d0ec 1098 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
a0d0e21e 1099 SPAGAIN;
4b523e79
DD
1100 if (sv_isobject(TOPs))
1101 goto retie;
a0d0e21e 1102 }
4b523e79
DD
1103 else {
1104 retie:
ad64d0ec
NC
1105 sv_unmagic(MUTABLE_SV(hv), PERL_MAGIC_tied);
1106 sv_magic(MUTABLE_SV(hv), TOPs, PERL_MAGIC_tied, NULL, 0);
6b05c17a 1107 }
a0d0e21e
LW
1108 LEAVE;
1109 RETURN;
1110}
1111
a0d0e21e
LW
1112PP(pp_sselect)
1113{
a0d0e21e 1114#ifdef HAS_SELECT
20b7effb 1115 dSP; dTARGET;
eb578fdb
KW
1116 I32 i;
1117 I32 j;
1118 char *s;
1119 SV *sv;
65202027 1120 NV value;
a0d0e21e
LW
1121 I32 maxlen = 0;
1122 I32 nfound;
1123 struct timeval timebuf;
1124 struct timeval *tbuf = &timebuf;
1125 I32 growsize;
1126 char *fd_sets[4];
1127#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1128 I32 masksize;
1129 I32 offset;
1130 I32 k;
1131
1132# if BYTEORDER & 0xf0000
1133# define ORDERBYTE (0x88888888 - BYTEORDER)
1134# else
1135# define ORDERBYTE (0x4444 - BYTEORDER)
1136# endif
1137
1138#endif
1139
1140 SP -= 4;
1141 for (i = 1; i <= 3; i++) {
c4420975 1142 SV * const sv = SP[i];
9d6d5a79 1143 SvGETMAGIC(sv);
15547071
GA
1144 if (!SvOK(sv))
1145 continue;
ba3062ae
FC
1146 if (SvREADONLY(sv)) {
1147 if (!(SvPOK(sv) && SvCUR(sv) == 0))
cb077ed2 1148 Perl_croak_no_modify();
ba3062ae
FC
1149 }
1150 else if (SvIsCOW(sv)) sv_force_normal_flags(sv, 0);
4ef2275c 1151 if (!SvPOK(sv)) {
9d6d5a79
FC
1152 if (!SvPOKp(sv))
1153 Perl_ck_warner(aTHX_ packWARN(WARN_MISC),
1154 "Non-string passed as bitmask");
1155 SvPV_force_nomg_nolen(sv); /* force string conversion */
4ef2275c 1156 }
729c079f 1157 j = SvCUR(sv);
a0d0e21e
LW
1158 if (maxlen < j)
1159 maxlen = j;
1160 }
1161
5ff3f7a4 1162/* little endians can use vecs directly */
e366b469 1163#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
5ff3f7a4 1164# ifdef NFDBITS
a0d0e21e 1165
5ff3f7a4
GS
1166# ifndef NBBY
1167# define NBBY 8
1168# endif
a0d0e21e
LW
1169
1170 masksize = NFDBITS / NBBY;
5ff3f7a4 1171# else
a0d0e21e 1172 masksize = sizeof(long); /* documented int, everyone seems to use long */
5ff3f7a4 1173# endif
a0d0e21e
LW
1174 Zero(&fd_sets[0], 4, char*);
1175#endif
1176
ad517f75
MHM
1177# if SELECT_MIN_BITS == 1
1178 growsize = sizeof(fd_set);
1179# else
1180# if defined(__GLIBC__) && defined(__FD_SETSIZE)
1181# undef SELECT_MIN_BITS
1182# define SELECT_MIN_BITS __FD_SETSIZE
1183# endif
e366b469
PG
1184 /* If SELECT_MIN_BITS is greater than one we most probably will want
1185 * to align the sizes with SELECT_MIN_BITS/8 because for example
1186 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
f05550c0 1187 * UNIX, Solaris, Darwin) the smallest quantum select() operates
e366b469
PG
1188 * on (sets/tests/clears bits) is 32 bits. */
1189 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
e366b469
PG
1190# endif
1191
a0d0e21e 1192 sv = SP[4];
90eaaf02 1193 SvGETMAGIC(sv);
a0d0e21e 1194 if (SvOK(sv)) {
90eaaf02 1195 value = SvNV_nomg(sv);
a0d0e21e
LW
1196 if (value < 0.0)
1197 value = 0.0;
1198 timebuf.tv_sec = (long)value;
65202027 1199 value -= (NV)timebuf.tv_sec;
a0d0e21e
LW
1200 timebuf.tv_usec = (long)(value * 1000000.0);
1201 }
1202 else
4608196e 1203 tbuf = NULL;
a0d0e21e
LW
1204
1205 for (i = 1; i <= 3; i++) {
1206 sv = SP[i];
15547071 1207 if (!SvOK(sv) || SvCUR(sv) == 0) {
a0d0e21e
LW
1208 fd_sets[i] = 0;
1209 continue;
1210 }
4ef2275c 1211 assert(SvPOK(sv));
a0d0e21e
LW
1212 j = SvLEN(sv);
1213 if (j < growsize) {
1214 Sv_Grow(sv, growsize);
a0d0e21e 1215 }
c07a80fd
PP
1216 j = SvCUR(sv);
1217 s = SvPVX(sv) + j;
1218 while (++j <= growsize) {
1219 *s++ = '\0';
1220 }
1221
a0d0e21e
LW
1222#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1223 s = SvPVX(sv);
a02a5408 1224 Newx(fd_sets[i], growsize, char);
a0d0e21e
LW
1225 for (offset = 0; offset < growsize; offset += masksize) {
1226 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1227 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1228 }
1229#else
1230 fd_sets[i] = SvPVX(sv);
1231#endif
1232 }
1233
dc4c69d9
JH
1234#ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1235 /* Can't make just the (void*) conditional because that would be
1236 * cpp #if within cpp macro, and not all compilers like that. */
1237 nfound = PerlSock_select(
1238 maxlen * 8,
1239 (Select_fd_set_t) fd_sets[1],
1240 (Select_fd_set_t) fd_sets[2],
1241 (Select_fd_set_t) fd_sets[3],
1242 (void*) tbuf); /* Workaround for compiler bug. */
1243#else
6ad3d225 1244 nfound = PerlSock_select(
a0d0e21e
LW
1245 maxlen * 8,
1246 (Select_fd_set_t) fd_sets[1],
1247 (Select_fd_set_t) fd_sets[2],
1248 (Select_fd_set_t) fd_sets[3],
1249 tbuf);
dc4c69d9 1250#endif
a0d0e21e
LW
1251 for (i = 1; i <= 3; i++) {
1252 if (fd_sets[i]) {
1253 sv = SP[i];
1254#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1255 s = SvPVX(sv);
1256 for (offset = 0; offset < growsize; offset += masksize) {
1257 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1258 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1259 }
1260 Safefree(fd_sets[i]);
1261#endif
1262 SvSETMAGIC(sv);
1263 }
1264 }
1265
4189264e 1266 PUSHi(nfound);
82334630 1267 if (GIMME_V == G_ARRAY && tbuf) {
65202027
DS
1268 value = (NV)(timebuf.tv_sec) +
1269 (NV)(timebuf.tv_usec) / 1000000.0;
6e449a3a 1270 mPUSHn(value);
a0d0e21e
LW
1271 }
1272 RETURN;
1273#else
cea2e8a9 1274 DIE(aTHX_ "select not implemented");
a0d0e21e
LW
1275#endif
1276}
1277
8226a3d7 1278/*
dcccc8ff
KW
1279
1280=head1 GV Functions
1281
8226a3d7
NC
1282=for apidoc setdefout
1283
796b6530
KW
1284Sets C<PL_defoutgv>, the default file handle for output, to the passed in
1285typeglob. As C<PL_defoutgv> "owns" a reference on its typeglob, the reference
8226a3d7 1286count of the passed in typeglob is increased by one, and the reference count
796b6530 1287of the typeglob that C<PL_defoutgv> points to is decreased by one.
8226a3d7
NC
1288
1289=cut
1290*/
1291
4633a7c4 1292void
864dbfa3 1293Perl_setdefout(pTHX_ GV *gv)
4633a7c4 1294{
656457d0
DM
1295 GV *oldgv = PL_defoutgv;
1296
9a9bb270 1297 PERL_ARGS_ASSERT_SETDEFOUT;
656457d0 1298
9a9bb270 1299 SvREFCNT_inc_simple_void_NN(gv);
3280af22 1300 PL_defoutgv = gv;
656457d0 1301 SvREFCNT_dec(oldgv);
4633a7c4
LW
1302}
1303
a0d0e21e
LW
1304PP(pp_select)
1305{
20b7effb 1306 dSP; dTARGET;
4633a7c4 1307 HV *hv;
159b6efe 1308 GV * const newdefout = (PL_op->op_private > 0) ? (MUTABLE_GV(POPs)) : NULL;
099be4f1 1309 GV * egv = GvEGVx(PL_defoutgv);
0df2568b 1310 GV * const *gvp;
4633a7c4 1311
4633a7c4 1312 if (!egv)
3280af22 1313 egv = PL_defoutgv;
099be4f1 1314 hv = isGV_with_GP(egv) ? GvSTASH(egv) : NULL;
0df2568b 1315 gvp = hv && HvENAME(hv)
204263bc
FC
1316 ? (GV**)hv_fetch(hv, GvNAME(egv), HEK_UTF8(GvNAME_HEK(egv)) ? -GvNAMELEN(egv) : GvNAMELEN(egv), FALSE)
1317 : NULL;
0df2568b 1318 if (gvp && *gvp == egv) {
bd61b366 1319 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
f86702cc 1320 XPUSHTARG;
0df2568b
FC
1321 }
1322 else {
ad64d0ec 1323 mXPUSHs(newRV(MUTABLE_SV(egv)));
4633a7c4
LW
1324 }
1325
1326 if (newdefout) {
ded8aa31
GS
1327 if (!GvIO(newdefout))
1328 gv_IOadd(newdefout);
4633a7c4
LW
1329 setdefout(newdefout);
1330 }
1331
a0d0e21e
LW
1332 RETURN;
1333}
1334
1335PP(pp_getc)
1336{
20b7effb 1337 dSP; dTARGET;
30901a8a
FC
1338 GV * const gv =
1339 MAXARG==0 || (!TOPs && !POPs) ? PL_stdingv : MUTABLE_GV(POPs);
9c9f25b8 1340 IO *const io = GvIO(gv);
2ae324a7 1341
ac3697cd
NC
1342 if (MAXARG == 0)
1343 EXTEND(SP, 1);
1344
9c9f25b8 1345 if (io) {
a5e1d062 1346 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1347 if (mg) {
1c23e2bd 1348 const U8 gimme = GIMME_V;
3e0cb5de 1349 Perl_tied_method(aTHX_ SV_CONST(GETC), SP, MUTABLE_SV(io), mg, gimme, 0);
0240605e
NC
1350 if (gimme == G_SCALAR) {
1351 SPAGAIN;
a79db61d 1352 SvSetMagicSV_nosteal(TARG, TOPs);
0240605e
NC
1353 }
1354 return NORMAL;
a79db61d 1355 }
2ae324a7 1356 }
90133b69 1357 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
51087808 1358 if (!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
831e4cc3 1359 report_evil_fh(gv);
b5fe5ca2 1360 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1361 RETPUSHUNDEF;
90133b69 1362 }
bbce6d69 1363 TAINT;
76f68e9b 1364 sv_setpvs(TARG, " ");
9bc64814 1365 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
7d59b7e4
NIS
1366 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1367 /* Find out how many bytes the char needs */
aa07b2f6 1368 Size_t len = UTF8SKIP(SvPVX_const(TARG));
7d59b7e4
NIS
1369 if (len > 1) {
1370 SvGROW(TARG,len+1);
1371 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1372 SvCUR_set(TARG,1+len);
1373 }
1374 SvUTF8_on(TARG);
1375 }
88c34251 1376 else SvUTF8_off(TARG);
a0d0e21e
LW
1377 PUSHTARG;
1378 RETURN;
1379}
1380
76e3520e 1381STATIC OP *
cea2e8a9 1382S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
a0d0e21e 1383{
eb578fdb 1384 PERL_CONTEXT *cx;
1c23e2bd 1385 const U8 gimme = GIMME_V;
a0d0e21e 1386
7918f24d
NC
1387 PERL_ARGS_ASSERT_DOFORM;
1388
535e48ea 1389 if (CvCLONE(cv))
7b190374
NC
1390 cv = MUTABLE_CV(sv_2mortal(MUTABLE_SV(cv_clone(cv))));
1391
ed8ff0f3 1392 cx = cx_pushblock(CXt_FORMAT, gimme, PL_stack_sp, PL_savestack_ix);
6a7d52cc 1393 cx_pushformat(cx, cv, retop, gv);
d2af2719 1394 if (CvDEPTH(cv) >= 2)
f32c7e86 1395 pad_push(CvPADLIST(cv), CvDEPTH(cv));
f32c7e86 1396 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), CvDEPTH(cv));
a0d0e21e 1397
4633a7c4 1398 setdefout(gv); /* locally select filehandle so $% et al work */
a0d0e21e
LW
1399 return CvSTART(cv);
1400}
1401
1402PP(pp_enterwrite)
1403{
39644a26 1404 dSP;
eb578fdb
KW
1405 GV *gv;
1406 IO *io;
a0d0e21e 1407 GV *fgv;
07822e36
JH
1408 CV *cv = NULL;
1409 SV *tmpsv = NULL;
a0d0e21e 1410
2addaaf3 1411 if (MAXARG == 0) {
2addaaf3 1412 EXTEND(SP, 1);
49225470 1413 gv = PL_defoutgv;
2addaaf3 1414 }
a0d0e21e 1415 else {
159b6efe 1416 gv = MUTABLE_GV(POPs);
a0d0e21e 1417 if (!gv)
3280af22 1418 gv = PL_defoutgv;
a0d0e21e 1419 }
a0d0e21e
LW
1420 io = GvIO(gv);
1421 if (!io) {
1422 RETPUSHNO;
1423 }
1424 if (IoFMT_GV(io))
1425 fgv = IoFMT_GV(io);
1426 else
1427 fgv = gv;
1428
2d1ebc9b 1429 assert(fgv);
a79db61d 1430
a0d0e21e 1431 cv = GvFORM(fgv);
a0d0e21e 1432 if (!cv) {
10edeb5d 1433 tmpsv = sv_newmortal();
f4a7049d 1434 gv_efullname4(tmpsv, fgv, NULL, FALSE);
2d1ebc9b 1435 DIE(aTHX_ "Undefined format \"%"SVf"\" called", SVfARG(tmpsv));
a0d0e21e 1436 }
44a8e56a 1437 IoFLAGS(io) &= ~IOf_DIDTOP;
8e4ecf23 1438 RETURNOP(doform(cv,gv,PL_op->op_next));
a0d0e21e
LW
1439}
1440
1441PP(pp_leavewrite)
1442{
20b7effb 1443 dSP;
4ebe6e95 1444 GV * const gv = CX_CUR()->blk_format.gv;
eb578fdb 1445 IO * const io = GvIOp(gv);
8b8cacda 1446 PerlIO *ofp;
760ac839 1447 PerlIO *fp;
eb578fdb 1448 PERL_CONTEXT *cx;
8f89e5a9 1449 OP *retop;
617a4f41 1450 bool is_return = cBOOL(PL_op->op_type == OP_RETURN);
a0d0e21e 1451
617a4f41 1452 if (is_return || !io || !(ofp = IoOFP(io)))
8b8cacda 1453 goto forget_top;
1454
760ac839 1455 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1456 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
8b8cacda 1457
3280af22
NIS
1458 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1459 PL_formtarget != PL_toptarget)
a0d0e21e 1460 {
4633a7c4
LW
1461 GV *fgv;
1462 CV *cv;
a0d0e21e
LW
1463 if (!IoTOP_GV(io)) {
1464 GV *topgv;
a0d0e21e
LW
1465
1466 if (!IoTOP_NAME(io)) {
1b6737cc 1467 SV *topname;
a0d0e21e
LW
1468 if (!IoFMT_NAME(io))
1469 IoFMT_NAME(io) = savepv(GvNAME(gv));
d0c0e7dd
FC
1470 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%"HEKf"_TOP",
1471 HEKfARG(GvNAME_HEK(gv))));
f776e3cd 1472 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
748a9306 1473 if ((topgv && GvFORM(topgv)) ||
fafc274c 1474 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
2e0de35c 1475 IoTOP_NAME(io) = savesvpv(topname);
a0d0e21e 1476 else
89529cee 1477 IoTOP_NAME(io) = savepvs("top");
a0d0e21e 1478 }
f776e3cd 1479 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
a0d0e21e 1480 if (!topgv || !GvFORM(topgv)) {
b929a54b 1481 IoLINES_LEFT(io) = IoPAGE_LEN(io);
a0d0e21e
LW
1482 goto forget_top;
1483 }
1484 IoTOP_GV(io) = topgv;
1485 }
748a9306
LW
1486 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1487 I32 lines = IoLINES_LEFT(io);
504618e9 1488 const char *s = SvPVX_const(PL_formtarget);
8e07c86e
AD
1489 if (lines <= 0) /* Yow, header didn't even fit!!! */
1490 goto forget_top;
748a9306
LW
1491 while (lines-- > 0) {
1492 s = strchr(s, '\n');
1493 if (!s)
1494 break;
1495 s++;
1496 }
1497 if (s) {
f54cb97a 1498 const STRLEN save = SvCUR(PL_formtarget);
aa07b2f6 1499 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
d75029d0
NIS
1500 do_print(PL_formtarget, ofp);
1501 SvCUR_set(PL_formtarget, save);
3280af22
NIS
1502 sv_chop(PL_formtarget, s);
1503 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW
1504 }
1505 }
a0d0e21e 1506 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
f6dfc736 1507 do_print(GvSV(gv_fetchpvs("\f", GV_ADD, SVt_PV)), ofp);
a0d0e21e
LW
1508 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1509 IoPAGE(io)++;
3280af22 1510 PL_formtarget = PL_toptarget;
748a9306 1511 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4 1512 fgv = IoTOP_GV(io);
636013b3 1513 assert(fgv); /* IoTOP_GV(io) should have been set above */
4633a7c4 1514 cv = GvFORM(fgv);
1df70142
AL
1515 if (!cv) {
1516 SV * const sv = sv_newmortal();
bd61b366 1517 gv_efullname4(sv, fgv, NULL, FALSE);
44b7e78a 1518 DIE(aTHX_ "Undefined top format \"%"SVf"\" called", SVfARG(sv));
4633a7c4 1519 }
43cd5cb7 1520 return doform(cv, gv, PL_op);
a0d0e21e
LW
1521 }
1522
1523 forget_top:
4ebe6e95 1524 cx = CX_CUR();
4df352a8
DM
1525 assert(CxTYPE(cx) == CXt_FORMAT);
1526 SP = PL_stack_base + cx->blk_oldsp; /* ignore retval of formline */
2f450c1b 1527 CX_LEAVE_SCOPE(cx);
6a7d52cc 1528 cx_popformat(cx);
ed8ff0f3 1529 cx_popblock(cx);
8f89e5a9 1530 retop = cx->blk_sub.retop;
5da525e9 1531 CX_POP(cx);
a0d0e21e 1532
617a4f41
DM
1533 if (is_return)
1534 /* XXX the semantics of doing 'return' in a format aren't documented.
1535 * Currently we ignore any args to 'return' and just return
1536 * a single undef in both scalar and list contexts
1537 */
1538 PUSHs(&PL_sv_undef);
1539 else if (!io || !(fp = IoOFP(io))) {
c782dc1d 1540 if (io && IoIFP(io))
7716c5c5 1541 report_wrongway_fh(gv, '<');
c521cf7c 1542 else
7716c5c5 1543 report_evil_fh(gv);
3280af22 1544 PUSHs(&PL_sv_no);
a0d0e21e
LW
1545 }
1546 else {
3280af22 1547 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
a2a5de95 1548 Perl_ck_warner(aTHX_ packWARN(WARN_IO), "page overflow");
a0d0e21e 1549 }
d75029d0 1550 if (!do_print(PL_formtarget, fp))
3280af22 1551 PUSHs(&PL_sv_no);
a0d0e21e 1552 else {
3280af22
NIS
1553 FmLINES(PL_formtarget) = 0;
1554 SvCUR_set(PL_formtarget, 0);
1555 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1556 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1557 (void)PerlIO_flush(fp);
3280af22 1558 PUSHs(&PL_sv_yes);
a0d0e21e
LW
1559 }
1560 }
3280af22 1561 PL_formtarget = PL_bodytarget;
8e4ecf23 1562 RETURNOP(retop);
a0d0e21e
LW
1563}
1564
1565PP(pp_prtf)
1566{
20b7effb 1567 dSP; dMARK; dORIGMARK;
760ac839 1568 PerlIO *fp;
a0d0e21e 1569
159b6efe
NC
1570 GV * const gv
1571 = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv;
9c9f25b8 1572 IO *const io = GvIO(gv);
46fc3d4c 1573
87385d72
FC
1574 /* Treat empty list as "" */
1575 if (MARK == SP) XPUSHs(&PL_sv_no);
1576
9c9f25b8 1577 if (io) {
a5e1d062 1578 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d
AL
1579 if (mg) {
1580 if (MARK == ORIGMARK) {
1581 MEXTEND(SP, 1);
1582 ++MARK;
1583 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1584 ++SP;
1585 }
3e0cb5de 1586 return Perl_tied_method(aTHX_ SV_CONST(PRINTF), mark - 1, MUTABLE_SV(io),
d682515d
NC
1587 mg,
1588 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1589 sp - mark);
a79db61d 1590 }
46fc3d4c
PP
1591 }
1592
9c9f25b8 1593 if (!io) {
51087808 1594 report_evil_fh(gv);
93189314 1595 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW
1596 goto just_say_no;
1597 }
1598 else if (!(fp = IoOFP(io))) {
7716c5c5
NC
1599 if (IoIFP(io))
1600 report_wrongway_fh(gv, '<');
1601 else if (ckWARN(WARN_CLOSED))
1602 report_evil_fh(gv);
93189314 1603 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
a0d0e21e
LW
1604 goto just_say_no;
1605 }
1606 else {
c7bd8b84 1607 SV *sv = sv_newmortal();
a0d0e21e
LW
1608 do_sprintf(sv, SP - MARK, MARK + 1);
1609 if (!do_print(sv, fp))
1610 goto just_say_no;
1611
1612 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1613 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW
1614 goto just_say_no;
1615 }
a0d0e21e 1616 SP = ORIGMARK;
3280af22 1617 PUSHs(&PL_sv_yes);
a0d0e21e
LW
1618 RETURN;
1619
1620 just_say_no:
a0d0e21e 1621 SP = ORIGMARK;
3280af22 1622 PUSHs(&PL_sv_undef);
a0d0e21e
LW
1623 RETURN;
1624}
1625
c07a80fd
PP
1626PP(pp_sysopen)
1627{
39644a26 1628 dSP;
de5e49e1 1629 const int perm = (MAXARG > 3 && (TOPs || POPs)) ? POPi : 0666;
1df70142 1630 const int mode = POPi;
1b6737cc 1631 SV * const sv = POPs;
159b6efe 1632 GV * const gv = MUTABLE_GV(POPs);
1b6737cc 1633 STRLEN len;
c07a80fd 1634
4592e6ca 1635 /* Need TIEHANDLE method ? */
1b6737cc 1636 const char * const tmps = SvPV_const(sv, len);
d5eb9a46 1637 if (do_open_raw(gv, tmps, len, mode, perm)) {
c07a80fd 1638 IoLINES(GvIOp(gv)) = 0;
3280af22 1639 PUSHs(&PL_sv_yes);
c07a80fd
PP
1640 }
1641 else {
3280af22 1642 PUSHs(&PL_sv_undef);
c07a80fd
PP
1643 }
1644 RETURN;
1645}
1646
b1c05ba5
DM
1647
1648/* also used for: pp_read() and pp_recv() (where supported) */
1649
a0d0e21e
LW
1650PP(pp_sysread)
1651{
20b7effb 1652 dSP; dMARK; dORIGMARK; dTARGET;
0b423688 1653 SSize_t offset;
a0d0e21e
LW
1654 IO *io;
1655 char *buffer;
0b423688 1656 STRLEN orig_size;
5b54f415 1657 SSize_t length;
eb5c063a 1658 SSize_t count;
748a9306 1659 SV *bufsv;
a0d0e21e 1660 STRLEN blen;
eb5c063a 1661 int fp_utf8;
1dd30107
NC
1662 int buffer_utf8;
1663 SV *read_target;
eb5c063a
NIS
1664 Size_t got = 0;
1665 Size_t wanted;
1d636c13 1666 bool charstart = FALSE;
87330c3c
JH
1667 STRLEN charskip = 0;
1668 STRLEN skip = 0;
159b6efe 1669 GV * const gv = MUTABLE_GV(*++MARK);
375ed12a
JH
1670 int fd;
1671
5b468f54 1672 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1b6737cc 1673 && gv && (io = GvIO(gv)) )
137443ea 1674 {
a5e1d062 1675 const MAGIC *const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1b6737cc 1676 if (mg) {
3e0cb5de 1677 return Perl_tied_method(aTHX_ SV_CONST(READ), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC
1678 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1679 sp - mark);
1b6737cc 1680 }
2ae324a7
PP
1681 }
1682
a0d0e21e
LW
1683 if (!gv)
1684 goto say_undef;
748a9306 1685 bufsv = *++MARK;
ff68c719 1686 if (! SvOK(bufsv))
60e13354 1687 SvPVCLEAR(bufsv);
a0d0e21e 1688 length = SvIVx(*++MARK);
4bac9ae4
CS
1689 if (length < 0)
1690 DIE(aTHX_ "Negative length");
748a9306 1691 SETERRNO(0,0);
a0d0e21e
LW
1692 if (MARK < SP)
1693 offset = SvIVx(*++MARK);
1694 else
1695 offset = 0;
1696 io = GvIO(gv);
b5fe5ca2 1697 if (!io || !IoIFP(io)) {
51087808 1698 report_evil_fh(gv);
b5fe5ca2 1699 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1700 goto say_undef;
b5fe5ca2 1701 }
375ed12a
JH
1702
1703 /* Note that fd can here validly be -1, don't check it yet. */
1704 fd = PerlIO_fileno(IoIFP(io));
1705
0064a8a9 1706 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
fb10a8a7 1707 if (PL_op->op_type == OP_SYSREAD || PL_op->op_type == OP_RECV) {
89e5a021
TC
1708 Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED),
1709 "%s() is deprecated on :utf8 handles",
1710 OP_DESC(PL_op));
fb10a8a7 1711 }
7d59b7e4 1712 buffer = SvPVutf8_force(bufsv, blen);
1e54db1a 1713 /* UTF-8 may not have been set if they are all low bytes */
eb5c063a 1714 SvUTF8_on(bufsv);
9b9d7ce8 1715 buffer_utf8 = 0;
7d59b7e4
NIS
1716 }
1717 else {
1718 buffer = SvPV_force(bufsv, blen);
1dd30107 1719 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
7d59b7e4 1720 }
4bac9ae4 1721 if (DO_UTF8(bufsv)) {
3f914778 1722 blen = sv_len_utf8_nomg(bufsv);
4bac9ae4 1723 }
7d59b7e4 1724
d0965105
JH
1725 charstart = TRUE;
1726 charskip = 0;
87330c3c 1727 skip = 0;
4bac9ae4 1728 wanted = length;
d0965105 1729
a0d0e21e 1730#ifdef HAS_SOCKET
533c011a 1731 if (PL_op->op_type == OP_RECV) {
0b423688 1732 Sock_size_t bufsize;
46fc3d4c 1733 char namebuf[MAXPATHLEN];
375ed12a
JH
1734 if (fd < 0) {
1735 SETERRNO(EBADF,SS_IVCHAN);
1736 RETPUSHUNDEF;
1737 }
b5afd346 1738#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
490ab354
JH
1739 bufsize = sizeof (struct sockaddr_in);
1740#else
46fc3d4c 1741 bufsize = sizeof namebuf;
490ab354 1742#endif
abf95952
IZ
1743#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1744 if (bufsize >= 256)
1745 bufsize = 255;
1746#endif
eb160463 1747 buffer = SvGROW(bufsv, (STRLEN)(length+1));
bbce6d69 1748 /* 'offset' means 'flags' here */
375ed12a 1749 count = PerlSock_recvfrom(fd, buffer, length, offset,
10edeb5d 1750 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1751 if (count < 0)
a0d0e21e 1752 RETPUSHUNDEF;
8eb023a9
DM
1753 /* MSG_TRUNC can give oversized count; quietly lose it */
1754 if (count > length)
1755 count = length;
eb5c063a 1756 SvCUR_set(bufsv, count);
748a9306
LW
1757 *SvEND(bufsv) = '\0';
1758 (void)SvPOK_only(bufsv);
eb5c063a
NIS
1759 if (fp_utf8)
1760 SvUTF8_on(bufsv);
748a9306 1761 SvSETMAGIC(bufsv);
aac0dd9a 1762 /* This should not be marked tainted if the fp is marked clean */
bbce6d69
PP
1763 if (!(IoFLAGS(io) & IOf_UNTAINT))
1764 SvTAINTED_on(bufsv);
a0d0e21e 1765 SP = ORIGMARK;
e122534c
TC
1766#if defined(__CYGWIN__)
1767 /* recvfrom() on cygwin doesn't set bufsize at all for
1768 connected sockets, leaving us with trash in the returned
1769 name, so use the same test as the Win32 code to check if it
1770 wasn't set, and set it [perl #118843] */
1771 if (bufsize == sizeof namebuf)
1772 bufsize = 0;
1773#endif
46fc3d4c 1774 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW
1775 PUSHs(TARG);
1776 RETURN;
1777 }
a0d0e21e 1778#endif
bbce6d69 1779 if (offset < 0) {
0b423688 1780 if (-offset > (SSize_t)blen)
cea2e8a9 1781 DIE(aTHX_ "Offset outside string");
bbce6d69
PP
1782 offset += blen;
1783 }
eb5c063a
NIS
1784 if (DO_UTF8(bufsv)) {
1785 /* convert offset-as-chars to offset-as-bytes */
d5f981bb 1786 if (offset >= (SSize_t)blen)
6960c29a
CH
1787 offset += SvCUR(bufsv) - blen;
1788 else
1789 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
eb5c063a 1790 }
375ed12a 1791
eb5c063a 1792 more_bytes:
375ed12a
JH
1793 /* Reestablish the fd in case it shifted from underneath us. */
1794 fd = PerlIO_fileno(IoIFP(io));
1795
0b423688 1796 orig_size = SvCUR(bufsv);
1dd30107
NC
1797 /* Allocating length + offset + 1 isn't perfect in the case of reading
1798 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1799 unduly.
1800 (should be 2 * length + offset + 1, or possibly something longer if
47e13f24 1801 IN_ENCODING Is true) */
eb160463 1802 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
0b423688
TC
1803 if (offset > 0 && offset > (SSize_t)orig_size) { /* Zero any newly allocated space */
1804 Zero(buffer+orig_size, offset-orig_size, char);
cd52b7b2 1805 }
eb5c063a 1806 buffer = buffer + offset;
1dd30107
NC
1807 if (!buffer_utf8) {
1808 read_target = bufsv;
1809 } else {
1810 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1811 concatenate it to the current buffer. */
1812
1813 /* Truncate the existing buffer to the start of where we will be
1814 reading to: */
1815 SvCUR_set(bufsv, offset);
1816
1817 read_target = sv_newmortal();
862a34c6 1818 SvUPGRADE(read_target, SVt_PV);
fe2774ed 1819 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1dd30107 1820 }
eb5c063a 1821
533c011a 1822 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1823#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1824 if (IoTYPE(io) == IoTYPE_SOCKET) {
375ed12a
JH
1825 if (fd < 0) {
1826 SETERRNO(EBADF,SS_IVCHAN);
1827 count = -1;
1828 }
1829 else
1830 count = PerlSock_recv(fd, buffer, length, 0);
a7092146
GS
1831 }
1832 else
1833#endif
1834 {
375ed12a
JH
1835 if (fd < 0) {
1836 SETERRNO(EBADF,RMS_IFI);
1837 count = -1;
1838 }
1839 else
1840 count = PerlLIO_read(fd, buffer, length);
a7092146 1841 }
a0d0e21e
LW
1842 }
1843 else
3b02c43c 1844 {
eb5c063a
NIS
1845 count = PerlIO_read(IoIFP(io), buffer, length);
1846 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1847 if (count == 0 && PerlIO_error(IoIFP(io)))
1848 count = -1;
3b02c43c 1849 }
eb5c063a 1850 if (count < 0) {
7716c5c5 1851 if (IoTYPE(io) == IoTYPE_WRONLY)
a5390457 1852 report_wrongway_fh(gv, '>');
a0d0e21e 1853 goto say_undef;
af8c498a 1854 }
aa07b2f6 1855 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1dd30107
NC
1856 *SvEND(read_target) = '\0';
1857 (void)SvPOK_only(read_target);
0064a8a9 1858 if (fp_utf8 && !IN_BYTES) {
eb5c063a 1859 /* Look at utf8 we got back and count the characters */
1df70142 1860 const char *bend = buffer + count;
eb5c063a 1861 while (buffer < bend) {
d0965105
JH
1862 if (charstart) {
1863 skip = UTF8SKIP(buffer);
1864 charskip = 0;
1865 }
1866 if (buffer - charskip + skip > bend) {
eb5c063a
NIS
1867 /* partial character - try for rest of it */
1868 length = skip - (bend-buffer);
aa07b2f6 1869 offset = bend - SvPVX_const(bufsv);
d0965105
JH
1870 charstart = FALSE;
1871 charskip += count;
eb5c063a
NIS
1872 goto more_bytes;
1873 }
1874 else {
1875 got++;
1876 buffer += skip;
d0965105
JH
1877 charstart = TRUE;
1878 charskip = 0;
eb5c063a
NIS
1879 }
1880 }
1881 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1882 provided amount read (count) was what was requested (length)
1883 */
1884 if (got < wanted && count == length) {
d0965105 1885 length = wanted - got;
aa07b2f6 1886 offset = bend - SvPVX_const(bufsv);
eb5c063a
NIS
1887 goto more_bytes;
1888 }
1889 /* return value is character count */
1890 count = got;
1891 SvUTF8_on(bufsv);
1892 }
1dd30107
NC
1893 else if (buffer_utf8) {
1894 /* Let svcatsv upgrade the bytes we read in to utf8.
1895 The buffer is a mortal so will be freed soon. */
1896 sv_catsv_nomg(bufsv, read_target);
1897 }
748a9306 1898 SvSETMAGIC(bufsv);
aac0dd9a 1899 /* This should not be marked tainted if the fp is marked clean */
bbce6d69
PP
1900 if (!(IoFLAGS(io) & IOf_UNTAINT))
1901 SvTAINTED_on(bufsv);
a0d0e21e 1902 SP = ORIGMARK;
eb5c063a 1903 PUSHi(count);
a0d0e21e
LW
1904 RETURN;
1905
1906 say_undef:
1907 SP = ORIGMARK;
1908 RETPUSHUNDEF;
1909}
1910
b1c05ba5
DM
1911
1912/* also used for: pp_send() where defined */
1913
60504e18 1914PP(pp_syswrite)
a0d0e21e 1915{
20b7effb 1916 dSP; dMARK; dORIGMARK; dTARGET;
748a9306 1917 SV *bufsv;
83003860 1918 const char *buffer;
8c99d73e 1919 SSize_t retval;
a0d0e21e 1920 STRLEN blen;
c9cb0f41 1921 STRLEN orig_blen_bytes;
64a1bc8e 1922 const int op_type = PL_op->op_type;
c9cb0f41
NC
1923 bool doing_utf8;
1924 U8 *tmpbuf = NULL;
159b6efe 1925 GV *const gv = MUTABLE_GV(*++MARK);
91472ad4 1926 IO *const io = GvIO(gv);
375ed12a 1927 int fd;
91472ad4
NC
1928
1929 if (op_type == OP_SYSWRITE && io) {
a5e1d062 1930 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1931 if (mg) {
a79db61d 1932 if (MARK == SP - 1) {
c8834ab7
TC
1933 SV *sv = *SP;
1934 mXPUSHi(sv_len(sv));
a79db61d
AL
1935 PUTBACK;
1936 }
1937
3e0cb5de 1938 return Perl_tied_method(aTHX_ SV_CONST(WRITE), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC
1939 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1940 sp - mark);
64a1bc8e 1941 }
1d603a67 1942 }
a0d0e21e
LW
1943 if (!gv)
1944 goto say_undef;
64a1bc8e 1945
748a9306 1946 bufsv = *++MARK;
64a1bc8e 1947
748a9306 1948 SETERRNO(0,0);
cf167416 1949 if (!io || !IoIFP(io) || IoTYPE(io) == IoTYPE_RDONLY) {
8c99d73e 1950 retval = -1;
51087808
NC
1951 if (io && IoIFP(io))
1952 report_wrongway_fh(gv, '<');
1953 else
1954 report_evil_fh(gv);
b5fe5ca2 1955 SETERRNO(EBADF,RMS_IFI);
7d59b7e4
NIS
1956 goto say_undef;
1957 }
375ed12a
JH
1958 fd = PerlIO_fileno(IoIFP(io));
1959 if (fd < 0) {
1960 SETERRNO(EBADF,SS_IVCHAN);
1961 retval = -1;
1962 goto say_undef;
1963 }
7d59b7e4 1964
c9cb0f41
NC
1965 /* Do this first to trigger any overloading. */
1966 buffer = SvPV_const(bufsv, blen);
1967 orig_blen_bytes = blen;
1968 doing_utf8 = DO_UTF8(bufsv);
1969
7d59b7e4 1970 if (PerlIO_isutf8(IoIFP(io))) {
89e5a021
TC
1971 Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED),
1972 "%s() is deprecated on :utf8 handles",
1973 OP_DESC(PL_op));
6aa2f6a7 1974 if (!SvUTF8(bufsv)) {
c9cb0f41
NC
1975 /* We don't modify the original scalar. */
1976 tmpbuf = bytes_to_utf8((const U8*) buffer, &blen);
1977 buffer = (char *) tmpbuf;
1978 doing_utf8 = TRUE;
1979 }
a0d0e21e 1980 }
c9cb0f41
NC
1981 else if (doing_utf8) {
1982 STRLEN tmplen = blen;
a79db61d 1983 U8 * const result = bytes_from_utf8((const U8*) buffer, &tmplen, &doing_utf8);
c9cb0f41
NC
1984 if (!doing_utf8) {
1985 tmpbuf = result;
1986 buffer = (char *) tmpbuf;
1987 blen = tmplen;
1988 }
1989 else {
1990 assert((char *)result == buffer);
1991 Perl_croak(aTHX_ "Wide character in %s", OP_DESC(PL_op));
1992 }
7d59b7e4
NIS
1993 }
1994
e2712234 1995#ifdef HAS_SOCKET
7627e6d0 1996 if (op_type == OP_SEND) {
e2712234
NC
1997 const int flags = SvIVx(*++MARK);
1998 if (SP > MARK) {
1999 STRLEN mlen;
2000 char * const sockbuf = SvPVx(*++MARK, mlen);
375ed12a 2001 retval = PerlSock_sendto(fd, buffer, blen,
e2712234
NC
2002 flags, (struct sockaddr *)sockbuf, mlen);
2003 }
2004 else {
375ed12a 2005 retval = PerlSock_send(fd, buffer, blen, flags);
e2712234 2006 }
7627e6d0
NC
2007 }
2008 else
e2712234 2009#endif
7627e6d0 2010 {
c9cb0f41
NC
2011 Size_t length = 0; /* This length is in characters. */
2012 STRLEN blen_chars;
7d59b7e4 2013 IV offset;
c9cb0f41
NC
2014
2015 if (doing_utf8) {
2016 if (tmpbuf) {
2017 /* The SV is bytes, and we've had to upgrade it. */
2018 blen_chars = orig_blen_bytes;
2019 } else {
2020 /* The SV really is UTF-8. */
3f914778
FC
2021 /* Don't call sv_len_utf8 on a magical or overloaded
2022 scalar, as we might get back a different result. */
2023 blen_chars = sv_or_pv_len_utf8(bufsv, buffer, blen);
c9cb0f41
NC
2024 }
2025 } else {
2026 blen_chars = blen;
2027 }
2028
2029 if (MARK >= SP) {
2030 length = blen_chars;
2031 } else {
2032#if Size_t_size > IVSIZE
2033 length = (Size_t)SvNVx(*++MARK);
2034#else
2035 length = (Size_t)SvIVx(*++MARK);
2036#endif
4b0c4b6f
NC
2037 if ((SSize_t)length < 0) {
2038 Safefree(tmpbuf);
c9cb0f41 2039 DIE(aTHX_ "Negative length");
4b0c4b6f 2040 }
7d59b7e4 2041 }
c9cb0f41 2042
bbce6d69 2043 if (MARK < SP) {
a0d0e21e 2044 offset = SvIVx(*++MARK);
bbce6d69 2045 if (offset < 0) {
4b0c4b6f
NC
2046 if (-offset > (IV)blen_chars) {
2047 Safefree(tmpbuf);
cea2e8a9 2048 DIE(aTHX_ "Offset outside string");
4b0c4b6f 2049 }
c9cb0f41 2050 offset += blen_chars;
3c946528 2051 } else if (offset > (IV)blen_chars) {
4b0c4b6f 2052 Safefree(tmpbuf);
cea2e8a9 2053 DIE(aTHX_ "Offset outside string");
4b0c4b6f 2054 }
bbce6d69 2055 } else
a0d0e21e 2056 offset = 0;
c9cb0f41
NC
2057 if (length > blen_chars - offset)
2058 length = blen_chars - offset;
2059 if (doing_utf8) {
2060 /* Here we convert length from characters to bytes. */
2061 if (tmpbuf || SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
2062 /* Either we had to convert the SV, or the SV is magical, or
2063 the SV has overloading, in which case we can't or mustn't
2064 or mustn't call it again. */
2065
2066 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
2067 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
2068 } else {
2069 /* It's a real UTF-8 SV, and it's not going to change under
2070 us. Take advantage of any cache. */
2071 I32 start = offset;
2072 I32 len_I32 = length;
2073
2074 /* Convert the start and end character positions to bytes.
2075 Remember that the second argument to sv_pos_u2b is relative
2076 to the first. */
2077 sv_pos_u2b(bufsv, &start, &len_I32);
2078
2079 buffer += start;
2080 length = len_I32;
2081 }
7d59b7e4
NIS
2082 }
2083 else {
2084 buffer = buffer+offset;
2085 }
a7092146 2086#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 2087 if (IoTYPE(io) == IoTYPE_SOCKET) {
375ed12a 2088 retval = PerlSock_send(fd, buffer, length, 0);
a7092146
GS
2089 }
2090 else
2091#endif
2092 {
94e4c244 2093 /* See the note at doio.c:do_print about filesize limits. --jhi */
375ed12a 2094 retval = PerlLIO_write(fd, buffer, length);
a7092146 2095 }
a0d0e21e 2096 }
c9cb0f41 2097
8c99d73e 2098 if (retval < 0)
a0d0e21e
LW
2099 goto say_undef;
2100 SP = ORIGMARK;
c9cb0f41 2101 if (doing_utf8)
f36eea10 2102 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
4b0c4b6f 2103
a79db61d 2104 Safefree(tmpbuf);
8c99d73e
GS
2105#if Size_t_size > IVSIZE
2106 PUSHn(retval);
2107#else
2108 PUSHi(retval);
2109#endif
a0d0e21e
LW
2110 RETURN;
2111
2112 say_undef:
a79db61d 2113 Safefree(tmpbuf);
a0d0e21e
LW
2114 SP = ORIGMARK;
2115 RETPUSHUNDEF;
2116}
2117
a0d0e21e
LW
2118PP(pp_eof)
2119{
20b7effb 2120 dSP;
a0d0e21e 2121 GV *gv;
32e65323 2122 IO *io;
a5e1d062 2123 const MAGIC *mg;
bc0c81ca
NC
2124 /*
2125 * in Perl 5.12 and later, the additional parameter is a bitmask:
2126 * 0 = eof
2127 * 1 = eof(FH)
2128 * 2 = eof() <- ARGV magic
2129 *
2130 * I'll rely on the compiler's trace flow analysis to decide whether to
2131 * actually assign this out here, or punt it into the only block where it is
2132 * used. Doing it out here is DRY on the condition logic.
2133 */
2134 unsigned int which;
a0d0e21e 2135
bc0c81ca 2136 if (MAXARG) {
32e65323 2137 gv = PL_last_in_gv = MUTABLE_GV(POPs); /* eof(FH) */
bc0c81ca
NC
2138 which = 1;
2139 }
b5f55170
NC
2140 else {
2141 EXTEND(SP, 1);
2142
bc0c81ca 2143 if (PL_op->op_flags & OPf_SPECIAL) {
b5f55170 2144 gv = PL_last_in_gv = GvEGVx(PL_argvgv); /* eof() - ARGV magic */
bc0c81ca
NC
2145 which = 2;
2146 }
2147 else {
b5f55170 2148 gv = PL_last_in_gv; /* eof */
bc0c81ca
NC
2149 which = 0;
2150 }
b5f55170 2151 }
32e65323
CS
2152
2153 if (!gv)
2154 RETPUSHNO;
2155
2156 if ((io = GvIO(gv)) && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) {
3e0cb5de 2157 return tied_method1(SV_CONST(EOF), SP, MUTABLE_SV(io), mg, newSVuv(which));
146174a9 2158 }
4592e6ca 2159
32e65323
CS
2160 if (!MAXARG && (PL_op->op_flags & OPf_SPECIAL)) { /* eof() */
2161 if (io && !IoIFP(io)) {
b9f2b683 2162 if ((IoFLAGS(io) & IOf_START) && av_tindex(GvAVn(gv)) < 0) {
1037353b 2163 SV ** svp;
32e65323
CS
2164 IoLINES(io) = 0;
2165 IoFLAGS(io) &= ~IOf_START;
d5eb9a46 2166 do_open6(gv, "-", 1, NULL, NULL, 0);
1037353b
DD
2167 svp = &GvSV(gv);
2168 if (*svp) {
2169 SV * sv = *svp;
2170 sv_setpvs(sv, "-");
2171 SvSETMAGIC(sv);
2172 }
32e65323 2173 else
1037353b 2174 *svp = newSVpvs("-");
32e65323 2175 }
157fb5a1 2176 else if (!nextargv(gv, FALSE))
32e65323 2177 RETPUSHYES;
6136c704 2178 }
4592e6ca
NIS
2179 }
2180
32e65323 2181 PUSHs(boolSV(do_eof(gv)));
a0d0e21e
LW
2182 RETURN;
2183}
2184
2185PP(pp_tell)
2186{
20b7effb 2187 dSP; dTARGET;
301e8125 2188 GV *gv;
5b468f54 2189 IO *io;
a0d0e21e 2190
b64a1294 2191 if (MAXARG != 0 && (TOPs || POPs))
159b6efe 2192 PL_last_in_gv = MUTABLE_GV(POPs);
ac3697cd
NC
2193 else
2194 EXTEND(SP, 1);
c4420975 2195 gv = PL_last_in_gv;
4592e6ca 2196
9c9f25b8
NC
2197 io = GvIO(gv);
2198 if (io) {
a5e1d062 2199 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2200 if (mg) {
3e0cb5de 2201 return tied_method0(SV_CONST(TELL), SP, MUTABLE_SV(io), mg);
a79db61d 2202 }
4592e6ca 2203 }
f4817f32 2204 else if (!gv) {
f03173f2
RGS
2205 if (!errno)
2206 SETERRNO(EBADF,RMS_IFI);
2207 PUSHi(-1);
2208 RETURN;
2209 }
4592e6ca 2210
146174a9
CB
2211#if LSEEKSIZE > IVSIZE
2212 PUSHn( do_tell(gv) );
2213#else
a0d0e21e 2214 PUSHi( do_tell(gv) );
146174a9 2215#endif
a0d0e21e
LW
2216 RETURN;
2217}
2218
b1c05ba5
DM
2219
2220/* also used for: pp_seek() */
2221
137443ea
PP
2222PP(pp_sysseek)
2223{
20b7effb 2224 dSP;
1df70142 2225 const int whence = POPi;
146174a9 2226#if LSEEKSIZE > IVSIZE
7452cf6a 2227 const Off_t offset = (Off_t)SvNVx(POPs);
146174a9 2228#else
7452cf6a 2229 const Off_t offset = (Off_t)SvIVx(POPs);
146174a9 2230#endif
a0d0e21e 2231
159b6efe 2232 GV * const gv = PL_last_in_gv = MUTABLE_GV(POPs);
9c9f25b8 2233 IO *const io = GvIO(gv);
4592e6ca 2234
9c9f25b8 2235 if (io) {
a5e1d062 2236 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2237 if (mg) {
cb50131a 2238#if LSEEKSIZE > IVSIZE
74f0b550 2239 SV *const offset_sv = newSVnv((NV) offset);
cb50131a 2240#else
74f0b550 2241 SV *const offset_sv = newSViv(offset);
cb50131a 2242#endif
bc0c81ca 2243
3e0cb5de 2244 return tied_method2(SV_CONST(SEEK), SP, MUTABLE_SV(io), mg, offset_sv,
d682515d 2245 newSViv(whence));
a79db61d 2246 }
4592e6ca
NIS
2247 }
2248
533c011a 2249 if (PL_op->op_type == OP_SEEK)
8903cb82
PP
2250 PUSHs(boolSV(do_seek(gv, offset, whence)));
2251 else {
0bcc34c2 2252 const Off_t sought = do_sysseek(gv, offset, whence);
b448e4fe 2253 if (sought < 0)
146174a9
CB
2254 PUSHs(&PL_sv_undef);
2255 else {
7452cf6a 2256 SV* const sv = sought ?
146174a9 2257#if LSEEKSIZE > IVSIZE
b448e4fe 2258 newSVnv((NV)sought)
146174a9 2259#else
b448e4fe 2260 newSViv(sought)
146174a9
CB
2261#endif
2262 : newSVpvn(zero_but_true, ZBTLEN);
6e449a3a 2263 mPUSHs(sv);
146174a9 2264 }
8903cb82 2265 }
a0d0e21e
LW
2266 RETURN;
2267}
2268
2269PP(pp_truncate)
2270{
39644a26 2271 dSP;
8c99d73e
GS
2272 /* There seems to be no consensus on the length type of truncate()
2273 * and ftruncate(), both off_t and size_t have supporters. In
2274 * general one would think that when using large files, off_t is
2275 * at least as wide as size_t, so using an off_t should be okay. */
2276 /* XXX Configure probe for the length type of *truncate() needed XXX */
0bcc34c2 2277 Off_t len;
a0d0e21e 2278
25342a55 2279#if Off_t_size > IVSIZE
0bcc34c2 2280 len = (Off_t)POPn;
8c99d73e 2281#else
0bcc34c2 2282 len = (Off_t)POPi;
8c99d73e
GS
2283#endif
2284 /* Checking for length < 0 is problematic as the type might or
301e8125 2285 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 2286 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2287 SETERRNO(0,0);
d05c1ba0 2288 {
5e0adc2d 2289 SV * const sv = POPs;
d05c1ba0
JH
2290 int result = 1;
2291 GV *tmpgv;
090bf15b
SR
2292 IO *io;
2293
42409c40
FC
2294 if (PL_op->op_flags & OPf_SPECIAL
2295 ? (tmpgv = gv_fetchsv(sv, 0, SVt_PVIO), 1)
2296 : !!(tmpgv = MAYBE_DEREF_GV(sv)) ) {
9c9f25b8
NC
2297 io = GvIO(tmpgv);
2298 if (!io)
090bf15b 2299 result = 0;
d05c1ba0 2300 else {
090bf15b 2301 PerlIO *fp;
090bf15b
SR
2302 do_ftruncate_io:
2303 TAINT_PROPER("truncate");
2304 if (!(fp = IoIFP(io))) {
2305 result = 0;
2306 }
2307 else {
375ed12a
JH
2308 int fd = PerlIO_fileno(fp);
2309 if (fd < 0) {
2310 SETERRNO(EBADF,RMS_IFI);
2311 result = 0;
2312 } else {
a9f17b43
JH
2313 if (len < 0) {
2314 SETERRNO(EINVAL, LIB_INVARG);
2315 result = 0;
2316 } else {
2317 PerlIO_flush(fp);
cbdc8872 2318#ifdef HAS_TRUNCATE
a9f17b43 2319 if (ftruncate(fd, len) < 0)
301e8125 2320#else
a9f17b43 2321 if (my_chsize(fd, len) < 0)
cbdc8872 2322#endif
a9f17b43
JH
2323 result = 0;
2324 }
375ed12a 2325 }
090bf15b 2326 }
d05c1ba0 2327 }
cbdc8872 2328 }
5e0adc2d 2329 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2330 io = MUTABLE_IO(SvRV(sv)); /* *main::FRED{IO} for example */
090bf15b 2331 goto do_ftruncate_io;
5e0adc2d
FC
2332 }
2333 else {
2334 const char * const name = SvPV_nomg_const_nolen(sv);
d05c1ba0 2335 TAINT_PROPER("truncate");
cbdc8872 2336#ifdef HAS_TRUNCATE
d05c1ba0
JH
2337 if (truncate(name, len) < 0)
2338 result = 0;
cbdc8872 2339#else
d05c1ba0 2340 {
d484df69
TC
2341 int mode = O_RDWR;
2342 int tmpfd;
2343
2344#if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE)
2345 mode |= O_LARGEFILE; /* Transparently largefiley. */
2346#endif
2347#ifdef O_BINARY
2348 /* On open(), the Win32 CRT tries to seek around text
2349 * files using 32-bit offsets, which causes the open()
2350 * to fail on large files, so open in binary mode.
2351 */
2352 mode |= O_BINARY;
2353#endif
2354 tmpfd = PerlLIO_open(name, mode);
d05c1ba0 2355
375ed12a 2356 if (tmpfd < 0) {
cbdc8872 2357 result = 0;
375ed12a 2358 } else {
d05c1ba0
JH
2359 if (my_chsize(tmpfd, len) < 0)
2360 result = 0;
2361 PerlLIO_close(tmpfd);
2362 }
cbdc8872 2363 }
a0d0e21e 2364#endif
d05c1ba0 2365 }
a0d0e21e 2366
d05c1ba0
JH
2367 if (result)
2368 RETPUSHYES;
2369 if (!errno)
93189314 2370 SETERRNO(EBADF,RMS_IFI);
d05c1ba0
JH
2371 RETPUSHUNDEF;
2372 }
a0d0e21e
LW
2373}
2374
b1c05ba5
DM
2375
2376/* also used for: pp_fcntl() */
2377
a0d0e21e
LW
2378PP(pp_ioctl)
2379{
20b7effb 2380 dSP; dTARGET;
7452cf6a 2381 SV * const argsv = POPs;
1df70142 2382 const unsigned int func = POPu;
49225470 2383 int optype;
159b6efe 2384 GV * const gv = MUTABLE_GV(POPs);
8a6c0fcb 2385 IO * const io = GvIOn(gv);
a0d0e21e 2386 char *s;
324aa91a 2387 IV retval;
a0d0e21e 2388
8a6c0fcb 2389 if (!IoIFP(io)) {
51087808 2390 report_evil_fh(gv);
93189314 2391 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
a0d0e21e
LW
2392 RETPUSHUNDEF;
2393 }
2394
748a9306 2395 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2396 STRLEN len;
324aa91a 2397 STRLEN need;
748a9306 2398 s = SvPV_force(argsv, len);
324aa91a
HF
2399 need = IOCPARM_LEN(func);
2400 if (len < need) {
2401 s = Sv_Grow(argsv, need + 1);
2402 SvCUR_set(argsv, need);
a0d0e21e
LW
2403 }
2404
748a9306 2405 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW
2406 }
2407 else {
748a9306 2408 retval = SvIV(argsv);
c529f79d 2409 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW
2410 }
2411
49225470 2412 optype = PL_op->op_type;
ed4b2e6b 2413 TAINT_PROPER(PL_op_desc[optype]);
a0d0e21e
LW
2414
2415 if (optype == OP_IOCTL)
2416#ifdef HAS_IOCTL
76e3520e 2417 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2418#else
cea2e8a9 2419 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW
2420#endif
2421 else
c214f4ad
B
2422#ifndef HAS_FCNTL
2423 DIE(aTHX_ "fcntl is not implemented");
2424#else
55497cff 2425#if defined(OS2) && defined(__EMX__)
760ac839 2426 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2427#else
760ac839 2428 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2429#endif
6652bd42 2430#endif
a0d0e21e 2431
6652bd42 2432#if defined(HAS_IOCTL) || defined(HAS_FCNTL)
748a9306
LW
2433 if (SvPOK(argsv)) {
2434 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2435 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
53e06cf0 2436 OP_NAME(PL_op));
748a9306
LW
2437 s[SvCUR(argsv)] = 0; /* put our null back */
2438 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW
2439 }
2440
2441 if (retval == -1)
2442 RETPUSHUNDEF;
2443 if (retval != 0) {
2444 PUSHi(retval);
2445 }
2446 else {
8903cb82 2447 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e 2448 }
4808266b 2449#endif
c214f4ad 2450 RETURN;
a0d0e21e
LW
2451}
2452
2453PP(pp_flock)
2454{
9cad6237 2455#ifdef FLOCK
20b7effb 2456 dSP; dTARGET;
a0d0e21e 2457 I32 value;
7452cf6a 2458 const int argtype = POPi;
1f28cbca 2459 GV * const gv = MUTABLE_GV(POPs);
9c9f25b8
NC
2460 IO *const io = GvIO(gv);
2461 PerlIO *const fp = io ? IoIFP(io) : NULL;
16d20bd9 2462
0bcc34c2 2463 /* XXX Looks to me like io is always NULL at this point */
a0d0e21e 2464 if (fp) {
68dc0745 2465 (void)PerlIO_flush(fp);
76e3520e 2466 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2467 }
cb50131a 2468 else {
51087808 2469 report_evil_fh(gv);
a0d0e21e 2470 value = 0;
93189314 2471 SETERRNO(EBADF,RMS_IFI);
cb50131a 2472 }
a0d0e21e
LW
2473 PUSHi(value);
2474 RETURN;
2475#else
56a94ef2 2476 DIE(aTHX_ PL_no_func, "flock");
a0d0e21e
LW
2477#endif
2478}
2479
2480/* Sockets. */
2481
7627e6d0
NC
2482#ifdef HAS_SOCKET
2483
a0d0e21e
LW
2484PP(pp_socket)
2485{
20b7effb 2486 dSP;
7452cf6a
AL
2487 const int protocol = POPi;
2488 const int type = POPi;
2489 const int domain = POPi;
159b6efe 2490 GV * const gv = MUTABLE_GV(POPs);
5805b585 2491 IO * const io = GvIOn(gv);
a0d0e21e
LW
2492 int fd;
2493
57171420
BS
2494 if (IoIFP(io))
2495 do_close(gv, FALSE);
2496
a0d0e21e 2497 TAINT_PROPER("socket");
6ad3d225 2498 fd = PerlSock_socket(domain, type, protocol);
375ed12a 2499 if (fd < 0) {
a0d0e21e 2500 RETPUSHUNDEF;
375ed12a 2501 }
460c8493
IZ
2502 IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2503 IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2504 IoTYPE(io) = IoTYPE_SOCKET;
a0d0e21e 2505 if (!IoIFP(io) || !IoOFP(io)) {
760ac839
LW
2506 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2507 if (IoOFP(io)) PerlIO_close(IoOFP(io));
6ad3d225 2508 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
a0d0e21e
LW
2509 RETPUSHUNDEF;
2510 }
131d45a9
JH
2511#if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
2512 /* ensure close-on-exec */
2513 if (fd > PL_maxsysfd && fcntl(fd, F_SETFD, FD_CLOEXEC) < 0)
375ed12a 2514 RETPUSHUNDEF;
8d2a6795 2515#endif
a0d0e21e
LW
2516
2517 RETPUSHYES;
a0d0e21e 2518}
7627e6d0 2519#endif
a0d0e21e
LW
2520
2521PP(pp_sockpair)
2522{
c95c94b1 2523#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
20b7effb 2524 dSP;
e0b7b5e2 2525 int fd[2];
7452cf6a
AL
2526 const int protocol = POPi;
2527 const int type = POPi;
2528 const int domain = POPi;
e0b7b5e2 2529
159b6efe 2530 GV * const gv2 = MUTABLE_GV(POPs);
49561e08
FC
2531 IO * const io2 = GvIOn(gv2);
2532 GV * const gv1 = MUTABLE_GV(POPs);
2533 IO * const io1 = GvIOn(gv1);
a0d0e21e 2534
49561e08 2535 if (IoIFP(io1))
dc0d0a5f 2536 do_close(gv1, FALSE);
49561e08 2537 if (IoIFP(io2))
dc0d0a5f 2538 do_close(gv2, FALSE);
57171420 2539
a0d0e21e 2540 TAINT_PROPER("socketpair");
6ad3d225 2541 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
a0d0e21e 2542 RETPUSHUNDEF;
460c8493
IZ
2543 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2544 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
50952442 2545 IoTYPE(io1) = IoTYPE_SOCKET;
460c8493
IZ
2546 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2547 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
50952442 2548 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2549 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW
2550 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2551 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2552 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW
2553 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2554 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2555 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW
2556 RETPUSHUNDEF;
2557 }
131d45a9 2558#if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
375ed12a 2559 /* ensure close-on-exec */
131d45a9
JH
2560 if ((fd[0] > PL_maxsysfd && fcntl(fd[0], F_SETFD, FD_CLOEXEC) < 0) ||
2561 (fd[1] > PL_maxsysfd && fcntl(fd[1], F_SETFD, FD_CLOEXEC) < 0))
375ed12a 2562 RETPUSHUNDEF;
8d2a6795 2563#endif
a0d0e21e
LW
2564
2565 RETPUSHYES;
2566#else
cea2e8a9 2567 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW
2568#endif
2569}
2570
7627e6d0
NC
2571#ifdef HAS_SOCKET
2572
b1c05ba5
DM
2573/* also used for: pp_connect() */
2574
a0d0e21e
LW
2575PP(pp_bind)
2576{
20b7effb 2577 dSP;
7452cf6a 2578 SV * const addrsv = POPs;
349d4f2f
NC
2579 /* OK, so on what platform does bind modify addr? */
2580 const char *addr;
159b6efe 2581 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2582 IO * const io = GvIOn(gv);
a0d0e21e 2583 STRLEN len;
e0b7b5e2 2584 int op_type;
375ed12a 2585 int fd;
a0d0e21e 2586
8a6c0fcb 2587 if (!IoIFP(io))
a0d0e21e 2588 goto nuts;
375ed12a
JH
2589 fd = PerlIO_fileno(IoIFP(io));
2590 if (fd < 0)
2591 goto nuts;
a0d0e21e 2592
349d4f2f 2593 addr = SvPV_const(addrsv, len);
e0b7b5e2 2594 op_type = PL_op->op_type;
32b81f04
NC
2595 TAINT_PROPER(PL_op_desc[op_type]);
2596 if ((op_type == OP_BIND
375ed12a
JH
2597 ? PerlSock_bind(fd, (struct sockaddr *)addr, len)
2598 : PerlSock_connect(fd, (struct sockaddr *)addr, len))
32b81f04 2599 >= 0)
a0d0e21e
LW
2600 RETPUSHYES;
2601 else
2602 RETPUSHUNDEF;
2603
7b52d656 2604 nuts:
fbcda526 2605 report_evil_fh(gv);
93189314 2606 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2607 RETPUSHUNDEF;
a0d0e21e
LW
2608}
2609
2610PP(pp_listen)
2611{
20b7effb 2612 dSP;
7452cf6a 2613 const int backlog = POPi;
159b6efe 2614 GV * const gv = MUTABLE_GV(POPs);
8a6c0fcb 2615 IO * const io = GvIOn(gv);
a0d0e21e 2616
8a6c0fcb 2617 if (!IoIFP(io))
a0d0e21e
LW
2618 goto nuts;
2619
6ad3d225 2620 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW
2621 RETPUSHYES;
2622 else
2623 RETPUSHUNDEF;
2624
7b52d656 2625 nuts:
fbcda526 2626 report_evil_fh(gv);
93189314 2627 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2628 RETPUSHUNDEF;
a0d0e21e
LW
2629}
2630
2631PP(pp_accept)
2632{
20b7effb 2633 dSP; dTARGET;
eb578fdb 2634 IO *nstio;
93d47a36 2635 char namebuf[MAXPATHLEN];
b5afd346 2636#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
93d47a36
JH
2637 Sock_size_t len = sizeof (struct sockaddr_in);
2638#else
2639 Sock_size_t len = sizeof namebuf;
2640#endif
159b6efe
NC
2641 GV * const ggv = MUTABLE_GV(POPs);
2642 GV * const ngv = MUTABLE_GV(POPs);
a0d0e21e
LW
2643 int fd;
2644
8a6c0fcb 2645 IO * const gstio = GvIO(ggv);
a0d0e21e
LW
2646 if (!gstio || !IoIFP(gstio))
2647 goto nuts;
2648
2649 nstio = GvIOn(ngv);
93d47a36 2650 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
e294cc5d
JH
2651#if defined(OEMVS)
2652 if (len == 0) {
2653 /* Some platforms indicate zero length when an AF_UNIX client is
2654 * not bound. Simulate a non-zero-length sockaddr structure in
2655 * this case. */
2656 namebuf[0] = 0; /* sun_len */
2657 namebuf[1] = AF_UNIX; /* sun_family */
2658 len = 2;
2659 }
2660#endif
2661
a0d0e21e
LW
2662 if (fd < 0)
2663 goto badexit;
a70048fb
AB
2664 if (IoIFP(nstio))
2665 do_close(ngv, FALSE);
460c8493
IZ
2666 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2667 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2668 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2669 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW
2670 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2671 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2672 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW
2673 goto badexit;
2674 }
131d45a9
JH
2675#if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
2676 /* ensure close-on-exec */
2677 if (fd > PL_maxsysfd && fcntl(fd, F_SETFD, FD_CLOEXEC) < 0)
375ed12a 2678 goto badexit;
8d2a6795 2679#endif
a0d0e21e 2680
381c1bae 2681#ifdef __SCO_VERSION__
93d47a36 2682 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
381c1bae 2683#endif
ed79a026 2684
93d47a36 2685 PUSHp(namebuf, len);
a0d0e21e
LW
2686 RETURN;
2687
7b52d656 2688 nuts:
fbcda526 2689 report_evil_fh(ggv);
93189314 2690 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2691
7b52d656 2692 badexit:
a0d0e21e
LW
2693 RETPUSHUNDEF;
2694
a0d0e21e
LW
2695}
2696
2697PP(pp_shutdown)
2698{
20b7effb 2699 dSP; dTARGET;
7452cf6a 2700 const int how = POPi;
159b6efe 2701 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2702 IO * const io = GvIOn(gv);
a0d0e21e 2703
8a6c0fcb 2704 if (!IoIFP(io))
a0d0e21e
LW
2705 goto nuts;
2706
6ad3d225 2707 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW
2708 RETURN;
2709
7b52d656 2710 nuts:
fbcda526 2711 report_evil_fh(gv);
93189314 2712 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2713 RETPUSHUNDEF;
a0d0e21e
LW
2714}
2715
b1c05ba5
DM
2716
2717/* also used for: pp_gsockopt() */
2718
a0d0e21e
LW
2719PP(pp_ssockopt)
2720{
20b7effb 2721 dSP;
7452cf6a 2722 const int optype = PL_op->op_type;
561b68a9 2723 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
7452cf6a
AL
2724 const unsigned int optname = (unsigned int) POPi;
2725 const unsigned int lvl = (unsigned int) POPi;
159b6efe 2726 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2727 IO * const io = GvIOn(gv);
a0d0e21e 2728 int fd;
1e422769 2729 Sock_size_t len;
a0d0e21e 2730
49225470 2731 if (!IoIFP(io))
a0d0e21e
LW
2732 goto nuts;
2733
760ac839 2734 fd = PerlIO_fileno(IoIFP(io));
375ed12a
JH
2735 if (fd < 0)
2736 goto nuts;
a0d0e21e
LW
2737 switch (optype) {
2738 case OP_GSOCKOPT:
748a9306 2739 SvGROW(sv, 257);
a0d0e21e 2740 (void)SvPOK_only(sv);
748a9306
LW
2741 SvCUR_set(sv,256);
2742 *SvEND(sv) ='\0';
1e422769 2743 len = SvCUR(sv);
6ad3d225 2744 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2745 goto nuts2;
ee2276e5
JH
2746#if defined(_AIX)
2747 /* XXX Configure test: does getsockopt set the length properly? */
2748 if (len == 256)
2749 len = sizeof(int);
2750#endif
1e422769 2751 SvCUR_set(sv, len);
748a9306 2752 *SvEND(sv) ='\0';
a0d0e21e
LW
2753 PUSHs(sv);
2754 break;
2755 case OP_SSOCKOPT: {
1215b447
JH
2756#if defined(__SYMBIAN32__)
2757# define SETSOCKOPT_OPTION_VALUE_T void *
2758#else
2759# define SETSOCKOPT_OPTION_VALUE_T const char *
2760#endif
2761 /* XXX TODO: We need to have a proper type (a Configure probe,
2762 * etc.) for what the C headers think of the third argument of
2763 * setsockopt(), the option_value read-only buffer: is it
2764 * a "char *", or a "void *", const or not. Some compilers
2765 * don't take kindly to e.g. assuming that "char *" implicitly
2766 * promotes to a "void *", or to explicitly promoting/demoting
2767 * consts to non/vice versa. The "const void *" is the SUS
2768 * definition, but that does not fly everywhere for the above
2769 * reasons. */
2770 SETSOCKOPT_OPTION_VALUE_T buf;
1e422769
PP
2771 int aint;
2772 if (SvPOKp(sv)) {
2d8e6c8d 2773 STRLEN l;
1215b447 2774 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2d8e6c8d 2775 len = l;
1e422769 2776 }
56ee1660 2777 else {
a0d0e21e 2778 aint = (int)SvIV(sv);
1215b447 2779 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
a0d0e21e
LW
2780 len = sizeof(int);
2781 }
6ad3d225 2782 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2783 goto nuts2;
3280af22 2784 PUSHs(&PL_sv_yes);
a0d0e21e
LW
2785 }
2786 break;
2787 }
2788 RETURN;
2789
7b52d656 2790 nuts:
fbcda526 2791 report_evil_fh(gv);
93189314 2792 SETERRNO(EBADF,SS_IVCHAN);
7b52d656 2793 nuts2:
a0d0e21e
LW
2794 RETPUSHUNDEF;
2795
a0d0e21e
LW
2796}
2797
b1c05ba5
DM
2798
2799/* also used for: pp_getsockname() */
2800
a0d0e21e
LW
2801PP(pp_getpeername)
2802{
20b7effb 2803 dSP;
7452cf6a 2804 const int optype = PL_op->op_type;
159b6efe 2805 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2806 IO * const io = GvIOn(gv);
7452cf6a 2807 Sock_size_t len;
a0d0e21e
LW
2808 SV *sv;
2809 int fd;
a0d0e21e 2810
49225470 2811 if (!IoIFP(io))
a0d0e21e
LW
2812 goto nuts;
2813
561b68a9 2814 sv = sv_2mortal(newSV(257));
748a9306 2815 (void)SvPOK_only(sv);
1e422769
PP
2816 len = 256;
2817 SvCUR_set(sv, len);
748a9306 2818 *SvEND(sv) ='\0';
760ac839 2819 fd = PerlIO_fileno(IoIFP(io));
375ed12a
JH
2820 if (fd < 0)
2821 goto nuts;
a0d0e21e
LW
2822 switch (optype) {
2823 case OP_GETSOCKNAME:
6ad3d225 2824 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW
2825 goto nuts2;
2826 break;
2827 case OP_GETPEERNAME:
6ad3d225 2828 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2829 goto nuts2;
490ab354
JH
2830#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2831 {
2832 static const char nowhere[] = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
2833 /* If the call succeeded, make sure we don't have a zeroed port/addr */
349d4f2f 2834 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2fbb330f 2835 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
490ab354 2836 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2837 goto nuts2;
490ab354
JH
2838 }
2839 }
2840#endif
a0d0e21e
LW
2841 break;
2842 }
13826f2c
CS
2843#ifdef BOGUS_GETNAME_RETURN
2844 /* Interactive Unix, getpeername() and getsockname()
2845 does not return valid namelen */
1e422769
PP
2846 if (len == BOGUS_GETNAME_RETURN)
2847 len = sizeof(struct sockaddr);
13826f2c 2848#endif
1e422769 2849 SvCUR_set(sv, len);
748a9306 2850 *SvEND(sv) ='\0';
a0d0e21e
LW
2851 PUSHs(sv);
2852 RETURN;
2853
7b52d656 2854 nuts:
fbcda526 2855 report_evil_fh(gv);
93189314 2856 SETERRNO(EBADF,SS_IVCHAN);
7b52d656 2857 nuts2:
a0d0e21e 2858 RETPUSHUNDEF;
7627e6d0 2859}
a0d0e21e 2860
a0d0e21e 2861#endif
a0d0e21e
LW
2862
2863/* Stat calls. */
2864
b1c05ba5
DM
2865/* also used for: pp_lstat() */
2866
a0d0e21e
LW
2867PP(pp_stat)
2868{
39644a26 2869 dSP;
10edeb5d 2870 GV *gv = NULL;
55dd8d50 2871 IO *io = NULL;
1c23e2bd 2872 U8 gimme;
a0d0e21e 2873 I32 max = 13;
109c43ed 2874 SV* sv;
a0d0e21e 2875
109c43ed
FC
2876 if (PL_op->op_flags & OPf_REF ? (gv = cGVOP_gv, 1)
2877 : !!(sv=POPs, gv = MAYBE_DEREF_GV(sv))) {
8a4e5b40 2878 if (PL_op->op_type == OP_LSTAT) {
5d3e98de 2879 if (gv != PL_defgv) {
5d329e6e 2880 do_fstat_warning_check:
a2a5de95 2881 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
93fad930
FC
2882 "lstat() on filehandle%s%"SVf,
2883 gv ? " " : "",
2884 SVfARG(gv
bf29d05f
BF
2885 ? sv_2mortal(newSVhek(GvENAME_HEK(gv)))
2886 : &PL_sv_no));
5d3e98de 2887 } else if (PL_laststype != OP_LSTAT)
b042df57 2888 /* diag_listed_as: The stat preceding %s wasn't an lstat */
8a4e5b40 2889 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
8a4e5b40
DD
2890 }
2891
2dd78f96 2892 if (gv != PL_defgv) {
b8413ac3 2893 bool havefp;
0d5064f1 2894 do_fstat_have_io:
b8413ac3 2895 havefp = FALSE;
3280af22 2896 PL_laststype = OP_STAT;
0d5064f1 2897 PL_statgv = gv ? gv : (GV *)io;
60e13354 2898 SvPVCLEAR(PL_statname);
5228a96c 2899 if(gv) {
ad02613c 2900 io = GvIO(gv);
0d5064f1
FC
2901 }
2902 if (io) {
5228a96c 2903 if (IoIFP(io)) {
375ed12a
JH
2904 int fd = PerlIO_fileno(IoIFP(io));
2905 if (fd < 0) {
2906 PL_laststatval = -1;
2907 SETERRNO(EBADF,RMS_IFI);
2908 } else {
2909 PL_laststatval = PerlLIO_fstat(fd, &PL_statcache);
2910 havefp = TRUE;
2911 }
5228a96c 2912 } else if (IoDIRP(io)) {
5228a96c 2913 PL_laststatval =
3497a01f 2914 PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache);
8080e3c8 2915 havefp = TRUE;
5228a96c
SP
2916 } else {
2917 PL_laststatval = -1;
2918 }
5228a96c 2919 }
05bb32d2 2920 else PL_laststatval = -1;
daa30a68 2921 if (PL_laststatval < 0 && !havefp) report_evil_fh(gv);
5228a96c
SP
2922 }
2923
9ddeeac9 2924 if (PL_laststatval < 0) {
a0d0e21e 2925 max = 0;
9ddeeac9 2926 }
a0d0e21e
LW
2927 }
2928 else {
7cb3f959 2929 const char *file;
109c43ed 2930 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2931 io = MUTABLE_IO(SvRV(sv));
ad02613c
SP
2932 if (PL_op->op_type == OP_LSTAT)
2933 goto do_fstat_warning_check;
2934 goto do_fstat_have_io;
2935 }
2936
4bac9ae4 2937 SvTAINTED_off(PL_statname); /* previous tainting irrelevant */
109c43ed 2938 sv_setpv(PL_statname, SvPV_nomg_const_nolen(sv));
a0714e2c 2939 PL_statgv = NULL;
533c011a 2940 PL_laststype = PL_op->op_type;
7cb3f959 2941 file = SvPV_nolen_const(PL_statname);
533c011a 2942 if (PL_op->op_type == OP_LSTAT)
7cb3f959 2943 PL_laststatval = PerlLIO_lstat(file, &PL_statcache);
a0d0e21e 2944 else
7cb3f959 2945 PL_laststatval = PerlLIO_stat(file, &PL_statcache);
3280af22 2946 if (PL_laststatval < 0) {
7cb3f959 2947 if (ckWARN(WARN_NEWLINE) && should_warn_nl(file)) {
5d37acd6
DM
2948 /* PL_warn_nl is constant */
2949 GCC_DIAG_IGNORE(-Wformat-nonliteral);
9014280d 2950 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
5d37acd6
DM
2951 GCC_DIAG_RESTORE;
2952 }
a0d0e21e
LW
2953 max = 0;
2954 }
2955 }
2956
54310121
PP
2957 gimme = GIMME_V;
2958 if (gimme != G_ARRAY) {
2959 if (gimme != G_VOID)
2960 XPUSHs(boolSV(max));
2961 RETURN;
a0d0e21e
LW
2962 }
2963 if (max) {
36477c24
PP
2964 EXTEND(SP, max);
2965 EXTEND_MORTAL(max);
6e449a3a 2966 mPUSHi(PL_statcache.st_dev);
8d8cba88
TC
2967#if ST_INO_SIZE > IVSIZE
2968 mPUSHn(PL_statcache.st_ino);
2969#else
2970# if ST_INO_SIGN <= 0
6e449a3a 2971 mPUSHi(PL_statcache.st_ino);
8d8cba88
TC
2972# else
2973 mPUSHu(PL_statcache.st_ino);
2974# endif
2975#endif
6e449a3a
MHM
2976 mPUSHu(PL_statcache.st_mode);
2977 mPUSHu(PL_statcache.st_nlink);
dfff4baf
BF
2978
2979 sv_setuid(PUSHmortal, PL_statcache.st_uid);
2980 sv_setgid(PUSHmortal, PL_statcache.st_gid);
2981
cbdc8872 2982#ifdef USE_STAT_RDEV
6e449a3a 2983 mPUSHi(PL_statcache.st_rdev);
cbdc8872 2984#else
84bafc02 2985 PUSHs(newSVpvs_flags("", SVs_TEMP));
cbdc8872 2986#endif
146174a9 2987#if Off_t_size > IVSIZE
6e449a3a 2988 mPUSHn(PL_statcache.st_size);
146174a9 2989#else
6e449a3a 2990 mPUSHi(PL_statcache.st_size);
146174a9 2991#endif
cbdc8872 2992#ifdef BIG_TIME
6e449a3a
MHM
2993 mPUSHn(PL_statcache.st_atime);
2994 mPUSHn(PL_statcache.st_mtime);
2995 mPUSHn(PL_statcache.st_ctime);
cbdc8872 2996#else
6e449a3a
MHM
2997 mPUSHi(PL_statcache.st_atime);
2998 mPUSHi(PL_statcache.st_mtime);
2999 mPUSHi(PL_statcache.st_ctime);
cbdc8872 3000#endif
a0d0e21e 3001#ifdef USE_STAT_BLOCKS
6e449a3a
MHM
3002 mPUSHu(PL_statcache.st_blksize);
3003 mPUSHu(PL_statcache.st_blocks);
a0d0e21e 3004#else
84bafc02
NC
3005 PUSHs(newSVpvs_flags("", SVs_TEMP));
3006 PUSHs(newSVpvs_flags("", SVs_TEMP));
a0d0e21e
LW
3007#endif
3008 }
3009 RETURN;
3010}
3011
6c48f025
NC
3012/* All filetest ops avoid manipulating the perl stack pointer in their main
3013 bodies (since commit d2c4d2d1e22d3125), and return using either
3014 S_ft_return_false() or S_ft_return_true(). These two helper functions are
3015 the only two which manipulate the perl stack. To ensure that no stack
3016 manipulation macros are used, the filetest ops avoid defining a local copy
3017 of the stack pointer with dSP. */
3018
8db8f6b6
FC
3019/* If the next filetest is stacked up with this one
3020 (PL_op->op_private & OPpFT_STACKING), we leave
3021 the original argument on the stack for success,
3022 and skip the stacked operators on failure.
3023 The next few macros/functions take care of this.
3024*/
3025
3026static OP *
9a6b02e8 3027S_ft_return_false(pTHX_ SV *ret) {
8db8f6b6 3028 OP *next = NORMAL;
697f9d37
NC
3029 dSP;
3030
226b9201 3031 if (PL_op->op_flags & OPf_REF) XPUSHs(ret);
8db8f6b6
FC
3032 else SETs(ret);
3033 PUTBACK;
697f9d37 3034
9a6b02e8
NC
3035 if (PL_op->op_private & OPpFT_STACKING) {
3036 while (OP_IS_FILETEST(next->op_type)
3037 && next->op_private & OPpFT_STACKED)
3038 next = next->op_next;
3039 }
8db8f6b6
FC
3040 return next;
3041}
3042
07ed4d4b
NC
3043PERL_STATIC_INLINE OP *
3044S_ft_return_true(pTHX_ SV *ret) {
3045 dSP;
3046 if (PL_op->op_flags & OPf_REF)
3047 XPUSHs(PL_op->op_private & OPpFT_STACKING ? (SV *)cGVOP_gv : (ret));
3048 else if (!(PL_op->op_private & OPpFT_STACKING))
3049 SETs(ret);
3050 PUTBACK;
3051 return NORMAL;
3052}
8db8f6b6 3053
48d023d6
NC
3054#define FT_RETURNNO return S_ft_return_false(aTHX_ &PL_sv_no)
3055#define FT_RETURNUNDEF return S_ft_return_false(aTHX_ &PL_sv_undef)
3056#define FT_RETURNYES return S_ft_return_true(aTHX_ &PL_sv_yes)
8db8f6b6 3057
6f1401dc 3058#define tryAMAGICftest_MG(chr) STMT_START { \
d2f67720 3059 if ( (SvFLAGS(*PL_stack_sp) & (SVf_ROK|SVs_GMG)) \
8db8f6b6
FC
3060 && PL_op->op_flags & OPf_KIDS) { \
3061 OP *next = S_try_amagic_ftest(aTHX_ chr); \
3062 if (next) return next; \
3063 } \
6f1401dc
DM
3064 } STMT_END
3065
8db8f6b6 3066STATIC OP *
6f1401dc 3067S_try_amagic_ftest(pTHX_ char chr) {
d2f67720 3068 SV *const arg = *PL_stack_sp;
6f1401dc
DM
3069
3070 assert(chr != '?');
c5780028 3071 if (!(PL_op->op_private & OPpFT_STACKING)) SvGETMAGIC(arg);
6f1401dc 3072
d2f67720 3073 if (SvAMAGIC(arg))
6f1401dc
DM
3074 {
3075 const char tmpchr = chr;
6f1401dc
DM
3076 SV * const tmpsv = amagic_call(arg,
3077 newSVpvn_flags(&tmpchr, 1, SVs_TEMP),
3078 ftest_amg, AMGf_unary);
3079
3080 if (!tmpsv)
8db8f6b6 3081 return NULL;
6f1401dc 3082
48d023d6
NC
3083 return SvTRUE(tmpsv)
3084 ? S_ft_return_true(aTHX_ tmpsv) : S_ft_return_false(aTHX_ tmpsv);
6f1401dc 3085 }
8db8f6b6 3086 return NULL;
6f1401dc
DM
3087}
3088
3089
b1c05ba5
DM
3090/* also used for: pp_fteexec() pp_fteread() pp_ftewrite() pp_ftrexec()
3091 * pp_ftrwrite() */
3092
a0d0e21e
LW
3093PP(pp_ftrread)
3094{
9cad6237 3095 I32 result;
af9e49b4 3096 /* Not const, because things tweak this below. Not bool, because there's
f3574cc6 3097 no guarantee that OPpFT_ACCESS is <= CHAR_MAX */
af9e49b4
NC
3098#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
3099 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
3100 /* Giving some sort of initial value silences compilers. */
3101# ifdef R_OK
3102 int access_mode = R_OK;
3103# else
3104 int access_mode = 0;
3105# endif
5ff3f7a4 3106#else
af9e49b4
NC
3107 /* access_mode is never used, but leaving use_access in makes the
3108 conditional compiling below much clearer. */
3109 I32 use_access = 0;
5ff3f7a4 3110#endif
2dcac756 3111 Mode_t stat_mode = S_IRUSR;
a0d0e21e 3112
af9e49b4 3113 bool effective = FALSE;
07fe7c6a 3114 char opchar = '?';
af9e49b4 3115
7fb13887
BM
3116 switch (PL_op->op_type) {
3117 case OP_FTRREAD: opchar = 'R'; break;
3118 case OP_FTRWRITE: opchar = 'W'; break;
3119 case OP_FTREXEC: opchar = 'X'; break;
3120 case OP_FTEREAD: opchar = 'r'; break;
3121 case OP_FTEWRITE: opchar = 'w'; break;
3122 case OP_FTEEXEC: opchar = 'x'; break;
3123 }
6f1401dc 3124 tryAMAGICftest_MG(opchar);
7fb13887 3125
af9e49b4
NC
3126 switch (PL_op->op_type) {
3127 case OP_FTRREAD:
3128#if !(defined(HAS_ACCESS) && defined(R_OK))
3129 use_access = 0;
3130#endif
3131 break;
3132
3133 case OP_FTRWRITE:
5ff3f7a4 3134#if defined(HAS_ACCESS) && defined(W_OK)
af9e49b4 3135 access_mode = W_OK;
5ff3f7a4 3136#else
af9e49b4 3137 use_access = 0;
5ff3f7a4 3138#endif
af9e49b4
NC
3139 stat_mode = S_IWUSR;
3140 break;
a0d0e21e 3141
af9e49b4 3142 case OP_FTREXEC:
5ff3f7a4 3143#if defined(HAS_ACCESS) && defined(X_OK)
af9e49b4 3144 access_mode = X_OK;
5ff3f7a4 3145#else
af9e49b4 3146 use_access = 0;
5ff3f7a4 3147#endif
af9e49b4
NC
3148 stat_mode = S_IXUSR;
3149 break;
a0d0e21e 3150
af9e49b4 3151 case OP_FTEWRITE:
faee0e31 3152#ifdef PERL_EFF_ACCESS
af9e49b4 3153 access_mode = W_OK;
5ff3f7a4 3154#endif
af9e49b4 3155 stat_mode = S_IWUSR;
924ba076 3156 /* FALLTHROUGH */
a0d0e21e 3157
af9e49b4
NC
3158 case OP_FTEREAD:
3159#ifndef PERL_EFF_ACCESS
3160 use_access = 0;
3161#endif
3162 effective = TRUE;
3163 break;
3164
af9e49b4 3165 case OP_FTEEXEC:
faee0e31 3166#ifdef PERL_EFF_ACCESS
b376053d 3167 access_mode = X_OK;
5ff3f7a4 3168#else
af9e49b4 3169 use_access = 0;
5ff3f7a4 3170#endif
af9e49b4
NC
3171 stat_mode = S_IXUSR;
3172 effective = TRUE;
3173 break;
3174 }
a0d0e21e 3175
af9e49b4
NC
3176 if (use_access) {
3177#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
d2f67720 3178 const char *name = SvPV_nolen(*PL_stack_sp);
af9e49b4
NC
3179 if (effective) {
3180# ifdef PERL_EFF_ACCESS
3181 result = PERL_EFF_ACCESS(name, access_mode);
3182# else
3183 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
3184 OP_NAME(PL_op));
3185# endif
3186 }
3187 else {
3188# ifdef HAS_ACCESS
3189 result = access(name, access_mode);
3190# else
3191 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
3192# endif
3193 }
5ff3f7a4 3194 if (result == 0)
d2c4d2d1 3195 FT_RETURNYES;
5ff3f7a4 3196 if (result < 0)
d2c4d2d1
FC
3197 FT_RETURNUNDEF;
3198 FT_RETURNNO;
af9e49b4 3199#endif
22865c03 3200 }
af9e49b4 3201
40c852de 3202 result = my_stat_flags(0);
a0d0e21e 3203 if (result < 0)
8db8f6b6 3204 FT_RETURNUNDEF;
af9e49b4 3205 if (cando(stat_mode, effective, &PL_statcache))
8db8f6b6
FC
3206 FT_RETURNYES;
3207 FT_RETURNNO;
a0d0e21e
LW
3208}
3209
b1c05ba5
DM
3210
3211/* also used for: pp_ftatime() pp_ftctime() pp_ftmtime() pp_ftsize() */
3212
a0d0e21e
LW
3213PP(pp_ftis)
3214{
fbb0b3b3 3215 I32 result;
d7f0a2f4 3216 const int op_type = PL_op->op_type;
07fe7c6a 3217 char opchar = '?';
07fe7c6a
BM
3218
3219 switch (op_type) {
3220 case OP_FTIS: opchar = 'e'; break;
3221 case OP_FTSIZE: opchar = 's'; break;
3222 case OP_FTMTIME: opchar = 'M'; break;
3223 case OP_FTCTIME: opchar = 'C'; break;
3224 case OP_FTATIME: opchar = 'A'; break;
3225 }
6f1401dc 3226 tryAMAGICftest_MG(opchar);
07fe7c6a 3227
40c852de 3228 result = my_stat_flags(0);
a0d0e21e 3229 if (result < 0)
8db8f6b6 3230 FT_RETURNUNDEF;
d7f0a2f4 3231 if (op_type == OP_FTIS)
8db8f6b6 3232 FT_RETURNYES;
957b0e1d 3233 {
d7f0a2f4
NC
3234 /* You can't dTARGET inside OP_FTIS, because you'll get
3235 "panic: pad_sv po" - the op is not flagged to have a target. */
957b0e1d 3236 dTARGET;
d7f0a2f4 3237 switch (op_type) {
957b0e1d
NC
3238 case OP_FTSIZE:
3239#if Off_t_size > IVSIZE
8db8f6b6 3240 sv_setnv(TARG, (NV)PL_statcache.st_size);
957b0e1d 3241#else
8db8f6b6 3242 sv_setiv(TARG, (IV)PL_statcache.st_size);
957b0e1d
NC
3243#endif
3244 break;
3245 case OP_FTMTIME:
8db8f6b6
FC
3246 sv_setnv(TARG,
3247 ((NV)PL_basetime - PL_statcache.st_mtime) / 86400.0 );
957b0e1d
NC
3248 break;
3249 case OP_FTATIME:
8db8f6b6
FC
3250 sv_setnv(TARG,
3251 ((NV)PL_basetime - PL_statcache.st_atime) / 86400.0 );
957b0e1d
NC
3252 break;
3253 case OP_FTCTIME:
8db8f6b6
FC
3254 sv_setnv(TARG,
3255 ((NV)PL_basetime - PL_statcache.st_ctime) / 86400.0 );
957b0e1d
NC
3256 break;
3257 }
8db8f6b6 3258 SvSETMAGIC(TARG);
48d023d6
NC
3259 return SvTRUE_nomg(TARG)
3260 ? S_ft_return_true(aTHX_ TARG) : S_ft_return_false(aTHX_ TARG);
957b0e1d 3261 }
a0d0e21e
LW
3262}
3263
b1c05ba5
DM
3264
3265/* also used for: pp_ftblk() pp_ftchr() pp_ftdir() pp_fteowned()
3266 * pp_ftfile() pp_ftpipe() pp_ftsgid() pp_ftsock()
3267 * pp_ftsuid() pp_ftsvtx() pp_ftzero() */
3268
a0d0e21e
LW
3269PP(pp_ftrowned)
3270{
fbb0b3b3 3271 I32 result;
07fe7c6a 3272 char opchar = '?';
17ad201a 3273
7fb13887
BM
3274 switch (PL_op->op_type) {
3275 case OP_FTROWNED: opchar = 'O'; break;
3276 case OP_FTEOWNED: opchar = 'o'; break;
3277 case OP_FTZERO: opchar = 'z'; break;
3278 case OP_FTSOCK: opchar = 'S'; break;
3279 case OP_FTCHR: opchar = 'c'; break;
3280 case OP_FTBLK: opchar = 'b'; break;
3281 case OP_FTFILE: opchar = 'f'; break;
3282 case OP_FTDIR: opchar = 'd'; break;
3283 case OP_FTPIPE: opchar = 'p'; break;
3284 case OP_FTSUID: opchar = 'u'; break;
3285 case OP_FTSGID: opchar = 'g'; break;
3286 case OP_FTSVTX: opchar = 'k'; break;
3287 }
6f1401dc 3288 tryAMAGICftest_MG(opchar);
7fb13887 3289
17ad201a
NC
3290 /* I believe that all these three are likely to be defined on most every
3291 system these days. */
3292#ifndef S_ISUID
c410dd6a 3293 if(PL_op->op_type == OP_FTSUID) {
8db8f6b6 3294 FT_RETURNNO;
c410dd6a 3295 }
17ad201a
NC
3296#endif
3297#ifndef S_ISGID
c410dd6a 3298 if(PL_op->op_type == OP_FTSGID) {
8db8f6b6 3299 FT_RETURNNO;
c410dd6a 3300 }
17ad201a
NC
3301#endif
3302#ifndef S_ISVTX
c410dd6a 3303 if(PL_op->op_type == OP_FTSVTX) {
8db8f6b6 3304 FT_RETURNNO;
c410dd6a 3305 }
17ad201a
NC
3306#endif
3307
40c852de 3308 result = my_stat_flags(0);
a0d0e21e 3309 if (result < 0)
8db8f6b6 3310 FT_RETURNUNDEF;
f1cb2d48
NC
3311 switch (PL_op->op_type) {
3312 case OP_FTROWNED:
985213f2 3313 if (PL_statcache.st_uid == PerlProc_getuid())
8db8f6b6 3314 FT_RETURNYES;
f1cb2d48
NC
3315 break;
3316 case OP_FTEOWNED:
985213f2 3317 if (PL_statcache.st_uid == PerlProc_geteuid())
8db8f6b6 3318 FT_RETURNYES;
f1cb2d48
NC
3319 break;
3320 case OP_FTZERO:
3321 if (PL_statcache.st_size == 0)
8db8f6b6 3322 FT_RETURNYES;
f1cb2d48
NC
3323 break;
3324 case OP_FTSOCK:
3325 if (S_ISSOCK(PL_statcache.st_mode))
8db8f6b6 3326 FT_RETURNYES;
f1cb2d48
NC
3327 break;
3328 case OP_FTCHR:
3329 if (S_ISCHR(PL_statcache.st_mode))
8db8f6b6 3330 FT_RETURNYES;
f1cb2d48
NC
3331 break;
3332 case OP_FTBLK:
3333 if (S_ISBLK(PL_statcache.st_mode))
8db8f6b6 3334 FT_RETURNYES;
f1cb2d48
NC
3335 break;
3336 case OP_FTFILE:
3337 if (S_ISREG(PL_statcache.st_mode))
8db8f6b6 3338 FT_RETURNYES;
f1cb2d48
NC
3339 break;
3340 case OP_FTDIR:
3341 if (S_ISDIR(PL_statcache.st_mode))
8db8f6b6 3342 FT_RETURNYES;
f1cb2d48
NC
3343 break;
3344 case OP_FTPIPE:
3345 if (S_ISFIFO(PL_statcache.st_mode))
8db8f6b6 3346 FT_RETURNYES;
f1cb2d48 3347 break;
a0d0e21e 3348#ifdef S_ISUID
17ad201a
NC
3349 case OP_FTSUID:
3350 if (PL_statcache.st_mode & S_ISUID)
8db8f6b6 3351 FT_RETURNYES;
17ad201a 3352 break;
a0d0e21e 3353#endif
a0d0e21e 3354#ifdef S_ISGID
17ad201a
NC
3355 case OP_FTSGID:
3356 if (PL_statcache.st_mode & S_ISGID)