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[perl5.git] / pp_sys.c
CommitLineData
a0d0e21e
LW
1/* pp_sys.c
2 *
fdf8c088 3 * Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
1129b882 4 * 2004, 2005, 2006, 2007, 2008 by Larry Wall and others
a0d0e21e
LW
5 *
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
8 *
9 */
10
11/*
12 * But only a short way ahead its floor and the walls on either side were
13 * cloven by a great fissure, out of which the red glare came, now leaping
14 * up, now dying down into darkness; and all the while far below there was
15 * a rumour and a trouble as of great engines throbbing and labouring.
4ac71550
TC
16 *
17 * [p.945 of _The Lord of the Rings_, VI/iii: "Mount Doom"]
a0d0e21e
LW
18 */
19
166f8a29
DM
20/* This file contains system pp ("push/pop") functions that
21 * execute the opcodes that make up a perl program. A typical pp function
22 * expects to find its arguments on the stack, and usually pushes its
23 * results onto the stack, hence the 'pp' terminology. Each OP structure
24 * contains a pointer to the relevant pp_foo() function.
25 *
26 * By 'system', we mean ops which interact with the OS, such as pp_open().
27 */
28
a0d0e21e 29#include "EXTERN.h"
864dbfa3 30#define PERL_IN_PP_SYS_C
a0d0e21e 31#include "perl.h"
d95a2ea5 32#include "time64.h"
a0d0e21e 33
f1066039
JH
34#ifdef I_SHADOW
35/* Shadow password support for solaris - pdo@cs.umd.edu
36 * Not just Solaris: at least HP-UX, IRIX, Linux.
3813c136
JH
37 * The API is from SysV.
38 *
39 * There are at least two more shadow interfaces,
40 * see the comments in pp_gpwent().
41 *
42 * --jhi */
43# ifdef __hpux__
c529f79d 44/* There is a MAXINT coming from <shadow.h> <- <hpsecurity.h> <- <values.h>
301e8125 45 * and another MAXINT from "perl.h" <- <sys/param.h>. */
3813c136
JH
46# undef MAXINT
47# endif
48# include <shadow.h>
8c0bfa08
PB
49#endif
50
76c32331
PP
51#ifdef I_SYS_RESOURCE
52# include <sys/resource.h>
16d20bd9 53#endif
a0d0e21e 54
2986a63f
JH
55#ifdef NETWARE
56NETDB_DEFINE_CONTEXT
57#endif
58
a0d0e21e 59#ifdef HAS_SELECT
1e743fda
JH
60# ifdef I_SYS_SELECT
61# include <sys/select.h>
62# endif
a0d0e21e 63#endif
a0d0e21e 64
dc45a647
MB
65/* XXX Configure test needed.
66 h_errno might not be a simple 'int', especially for multi-threaded
5ff3f7a4
GS
67 applications, see "extern int errno in perl.h". Creating such
68 a test requires taking into account the differences between
69 compiling multithreaded and singlethreaded ($ccflags et al).
70 HOST_NOT_FOUND is typically defined in <netdb.h>.
dc45a647 71*/
cb50131a 72#if defined(HOST_NOT_FOUND) && !defined(h_errno) && !defined(__CYGWIN__)
a0d0e21e
LW
73extern int h_errno;
74#endif
75
76#ifdef HAS_PASSWD
77# ifdef I_PWD
78# include <pwd.h>
8d698507 79# elif !defined(VMS)
20ce7b12
GS
80 struct passwd *getpwnam (char *);
81 struct passwd *getpwuid (Uid_t);
a0d0e21e 82# endif
28e8609d 83# ifdef HAS_GETPWENT
8d698507 84# ifndef getpwent
20ce7b12 85 struct passwd *getpwent (void);
8d698507 86# elif defined (VMS) && defined (my_getpwent)
9fa802f3 87 struct passwd *Perl_my_getpwent (pTHX);
8d698507 88# endif
28e8609d 89# endif
a0d0e21e
LW
90#endif
91
92#ifdef HAS_GROUP
93# ifdef I_GRP
94# include <grp.h>
95# else
20ce7b12
GS
96 struct group *getgrnam (char *);
97 struct group *getgrgid (Gid_t);
a0d0e21e 98# endif
28e8609d 99# ifdef HAS_GETGRENT
8d698507 100# ifndef getgrent
20ce7b12 101 struct group *getgrent (void);
8d698507 102# endif
28e8609d 103# endif
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LW
104#endif
105
106#ifdef I_UTIME
3730b96e 107# if defined(_MSC_VER) || defined(__MINGW32__)
3fe9a6f1
PP
108# include <sys/utime.h>
109# else
110# include <utime.h>
111# endif
a0d0e21e 112#endif
a0d0e21e 113
cbdc8872 114#ifdef HAS_CHSIZE
cd52b7b2
PP
115# ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
116# undef my_chsize
117# endif
72cc7e2a 118# define my_chsize PerlLIO_chsize
8d698507
AC
119#elif defined(HAS_TRUNCATE)
120# define my_chsize PerlLIO_chsize
27da23d5 121#else
27da23d5 122I32 my_chsize(int fd, Off_t length);
cbdc8872
PP
123#endif
124
ff68c719
PP
125#ifdef HAS_FLOCK
126# define FLOCK flock
127#else /* no flock() */
128
36477c24
PP
129 /* fcntl.h might not have been included, even if it exists, because
130 the current Configure only sets I_FCNTL if it's needed to pick up
131 the *_OK constants. Make sure it has been included before testing
132 the fcntl() locking constants. */
133# if defined(HAS_FCNTL) && !defined(I_FCNTL)
134# include <fcntl.h>
135# endif
136
9d9004a9 137# if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
ff68c719
PP
138# define FLOCK fcntl_emulate_flock
139# define FCNTL_EMULATE_FLOCK
8d698507
AC
140# elif defined(HAS_LOCKF)
141# define FLOCK lockf_emulate_flock
142# define LOCKF_EMULATE_FLOCK
143# endif
ff68c719
PP
144
145# ifdef FLOCK
20ce7b12 146 static int FLOCK (int, int);
ff68c719
PP
147
148 /*
149 * These are the flock() constants. Since this sytems doesn't have
150 * flock(), the values of the constants are probably not available.
151 */
152# ifndef LOCK_SH
153# define LOCK_SH 1
154# endif
155# ifndef LOCK_EX
156# define LOCK_EX 2
157# endif
158# ifndef LOCK_NB
159# define LOCK_NB 4
160# endif
161# ifndef LOCK_UN
162# define LOCK_UN 8
163# endif
164# endif /* emulating flock() */
165
166#endif /* no flock() */
55497cff 167
85ab1d1d 168#define ZBTLEN 10
27da23d5 169static const char zero_but_true[ZBTLEN + 1] = "0 but true";
85ab1d1d 170
5ff3f7a4
GS
171#if defined(I_SYS_ACCESS) && !defined(R_OK)
172# include <sys/access.h>
173#endif
174
a4af207c
JH
175#include "reentr.h"
176
9cffb111
OS
177#ifdef __Lynx__
178/* Missing protos on LynxOS */
179void sethostent(int);
180void endhostent(void);
181void setnetent(int);
182void endnetent(void);
183void setprotoent(int);
184void endprotoent(void);
185void setservent(int);
186void endservent(void);
187#endif
188
40262ff4
AB
189#ifdef __amigaos4__
190# include "amigaos4/amigaio.h"
191#endif
192
faee0e31 193#undef PERL_EFF_ACCESS /* EFFective uid/gid ACCESS */
5ff3f7a4
GS
194
195/* F_OK unused: if stat() cannot find it... */
196
d7558cad 197#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
c955f117 198 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
d7558cad 199# define PERL_EFF_ACCESS(p,f) (access((p), (f) | EFF_ONLY_OK))
5ff3f7a4
GS
200#endif
201
d7558cad 202#if !defined(PERL_EFF_ACCESS) && defined(HAS_EACCESS)
3813c136 203# ifdef I_SYS_SECURITY
5ff3f7a4
GS
204# include <sys/security.h>
205# endif
c955f117
JH
206# ifdef ACC_SELF
207 /* HP SecureWare */
d7558cad 208# define PERL_EFF_ACCESS(p,f) (eaccess((p), (f), ACC_SELF))
c955f117
JH
209# else
210 /* SCO */
d7558cad 211# define PERL_EFF_ACCESS(p,f) (eaccess((p), (f)))
c955f117 212# endif
5ff3f7a4
GS
213#endif
214
d7558cad 215#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESSX) && defined(ACC_SELF)
36b19dd8
DIM
216 /* AIX's accessx() doesn't declare its argument const, unlike every other platform */
217# define PERL_EFF_ACCESS(p,f) (accessx((char*)(p), (f), ACC_SELF))
5ff3f7a4
GS
218#endif
219
d7558cad
NC
220
221#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) \
327c3667
GS
222 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
223 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
5ff3f7a4 224/* The Hard Way. */
327c3667 225STATIC int
7f4774ae 226S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
ba106d47 227{
c4420975
AL
228 const Uid_t ruid = getuid();
229 const Uid_t euid = geteuid();
230 const Gid_t rgid = getgid();
231 const Gid_t egid = getegid();
5ff3f7a4
GS
232 int res;
233
5ff3f7a4 234#if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
cea2e8a9 235 Perl_croak(aTHX_ "switching effective uid is not implemented");
5ff3f7a4 236#else
8d698507 237# ifdef HAS_SETREUID
5ff3f7a4 238 if (setreuid(euid, ruid))
8d698507 239# elif defined(HAS_SETRESUID)
5ff3f7a4 240 if (setresuid(euid, ruid, (Uid_t)-1))
8d698507 241# endif
dcbac5bb 242 /* diag_listed_as: entering effective %s failed */
cea2e8a9 243 Perl_croak(aTHX_ "entering effective uid failed");
5ff3f7a4
GS
244#endif
245
246#if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
cea2e8a9 247 Perl_croak(aTHX_ "switching effective gid is not implemented");
5ff3f7a4 248#else
8d698507 249# ifdef HAS_SETREGID
5ff3f7a4 250 if (setregid(egid, rgid))
8d698507 251# elif defined(HAS_SETRESGID)
5ff3f7a4 252 if (setresgid(egid, rgid, (Gid_t)-1))
8d698507 253# endif
dcbac5bb 254 /* diag_listed_as: entering effective %s failed */
cea2e8a9 255 Perl_croak(aTHX_ "entering effective gid failed");
5ff3f7a4
GS
256#endif
257
258 res = access(path, mode);
259
260#ifdef HAS_SETREUID
261 if (setreuid(ruid, euid))
8d698507 262#elif defined(HAS_SETRESUID)
5ff3f7a4
GS
263 if (setresuid(ruid, euid, (Uid_t)-1))
264#endif
dcbac5bb 265 /* diag_listed_as: leaving effective %s failed */
cea2e8a9 266 Perl_croak(aTHX_ "leaving effective uid failed");
5ff3f7a4
GS
267
268#ifdef HAS_SETREGID
269 if (setregid(rgid, egid))
8d698507 270#elif defined(HAS_SETRESGID)
5ff3f7a4
GS
271 if (setresgid(rgid, egid, (Gid_t)-1))
272#endif
dcbac5bb 273 /* diag_listed_as: leaving effective %s failed */
cea2e8a9 274 Perl_croak(aTHX_ "leaving effective gid failed");
5ff3f7a4
GS
275
276 return res;
277}
d6864606 278# define PERL_EFF_ACCESS(p,f) (S_emulate_eaccess(aTHX_ (p), (f)))
5ff3f7a4
GS
279#endif
280
a0d0e21e
LW
281PP(pp_backtick)
282{
20b7effb 283 dSP; dTARGET;
760ac839 284 PerlIO *fp;
1b6737cc 285 const char * const tmps = POPpconstx;
1c23e2bd 286 const U8 gimme = GIMME_V;
e1ec3a88 287 const char *mode = "r";
54310121 288
a0d0e21e 289 TAINT_PROPER("``");
16fe6d59
GS
290 if (PL_op->op_private & OPpOPEN_IN_RAW)
291 mode = "rb";
292 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
293 mode = "rt";
2fbb330f 294 fp = PerlProc_popen(tmps, mode);
a0d0e21e 295 if (fp) {
11bcd5da 296 const char * const type = Perl_PerlIO_context_layers(aTHX_ NULL);
ac27b0f5
NIS
297 if (type && *type)
298 PerlIO_apply_layers(aTHX_ fp,mode,type);
299
54310121 300 if (gimme == G_VOID) {
96827780
MB
301 char tmpbuf[256];
302 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
a79db61d 303 NOOP;
54310121
PP
304 }
305 else if (gimme == G_SCALAR) {
d343c3ef 306 ENTER_with_name("backtick");
75af1a9c 307 SAVESPTR(PL_rs);
fa326138 308 PL_rs = &PL_sv_undef;
60e13354 309 SvPVCLEAR(TARG); /* note that this preserves previous buffer */
bd61b366 310 while (sv_gets(TARG, fp, SvCUR(TARG)) != NULL)
a79db61d 311 NOOP;
d343c3ef 312 LEAVE_with_name("backtick");
a0d0e21e 313 XPUSHs(TARG);
aa689395 314 SvTAINTED_on(TARG);
a0d0e21e
LW
315 }
316 else {
a0d0e21e 317 for (;;) {
561b68a9 318 SV * const sv = newSV(79);
bd61b366 319 if (sv_gets(sv, fp, 0) == NULL) {
a0d0e21e
LW
320 SvREFCNT_dec(sv);
321 break;
322 }
6e449a3a 323 mXPUSHs(sv);
a0d0e21e 324 if (SvLEN(sv) - SvCUR(sv) > 20) {
1da4ca5f 325 SvPV_shrink_to_cur(sv);
a0d0e21e 326 }
aa689395 327 SvTAINTED_on(sv);
a0d0e21e
LW
328 }
329 }
2fbb330f 330 STATUS_NATIVE_CHILD_SET(PerlProc_pclose(fp));
aa689395 331 TAINT; /* "I believe that this is not gratuitous!" */
a0d0e21e
LW
332 }
333 else {
37038d91 334 STATUS_NATIVE_CHILD_SET(-1);
54310121 335 if (gimme == G_SCALAR)
a0d0e21e
LW
336 RETPUSHUNDEF;
337 }
338
339 RETURN;
340}
341
342PP(pp_glob)
343{
344 OP *result;
9426e1a5 345 dSP;
9423a867
FC
346 GV * const gv = (PL_op->op_flags & OPf_SPECIAL) ? NULL : (GV *)POPs;
347
348 PUTBACK;
349
151cea25
FC
350 /* make a copy of the pattern if it is gmagical, to ensure that magic
351 * is called once and only once */
9423a867 352 if (SvGMAGICAL(TOPs)) TOPs = sv_2mortal(newSVsv(TOPs));
9426e1a5 353
fc99edcf 354 tryAMAGICunTARGETlist(iter_amg, (PL_op->op_flags & OPf_SPECIAL));
d1bea3d8
DM
355
356 if (PL_op->op_flags & OPf_SPECIAL) {
357 /* call Perl-level glob function instead. Stack args are:
9423a867 358 * MARK, wildcard
d1bea3d8
DM
359 * and following OPs should be: gv(CORE::GLOBAL::glob), entersub
360 * */
361 return NORMAL;
362 }
d67594ff 363 if (PL_globhook) {
d67594ff
FC
364 PL_globhook(aTHX);
365 return NORMAL;
366 }
f5284f61 367
71686f12
GS
368 /* Note that we only ever get here if File::Glob fails to load
369 * without at the same time croaking, for some reason, or if
370 * perl was built with PERL_EXTERNAL_GLOB */
371
d343c3ef 372 ENTER_with_name("glob");
a0d0e21e 373
c90c0ff4 374#ifndef VMS
284167a5 375 if (TAINTING_get) {
7bac28a0
PP
376 /*
377 * The external globbing program may use things we can't control,
378 * so for security reasons we must assume the worst.
379 */
380 TAINT;
22c35a8c 381 taint_proper(PL_no_security, "glob");
7bac28a0 382 }
c90c0ff4 383#endif /* !VMS */
7bac28a0 384
3280af22 385 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
9423a867 386 PL_last_in_gv = gv;
a0d0e21e 387
3280af22 388 SAVESPTR(PL_rs); /* This is not permanent, either. */
84bafc02 389 PL_rs = newSVpvs_flags("\000", SVs_TEMP);
c07a80fd
PP
390#ifndef DOSISH
391#ifndef CSH
6b88bc9c 392 *SvPVX(PL_rs) = '\n';
a0d0e21e 393#endif /* !CSH */
55497cff 394#endif /* !DOSISH */
c07a80fd 395
a0d0e21e 396 result = do_readline();
d343c3ef 397 LEAVE_with_name("glob");
a0d0e21e
LW
398 return result;
399}
400
a0d0e21e
LW
401PP(pp_rcatline)
402{
146174a9 403 PL_last_in_gv = cGVOP_gv;
a0d0e21e
LW
404 return do_readline();
405}
406
407PP(pp_warn)
408{
20b7effb 409 dSP; dMARK;
c5df3096 410 SV *exsv;
06bf62c7 411 STRLEN len;
b59aed67 412 if (SP - MARK > 1) {
a0d0e21e 413 dTARGET;
3280af22 414 do_join(TARG, &PL_sv_no, MARK, SP);
c5df3096 415 exsv = TARG;
a0d0e21e
LW
416 SP = MARK + 1;
417 }
b59aed67 418 else if (SP == MARK) {
c5df3096 419 exsv = &PL_sv_no;
8d629a78 420 MEXTEND(SP, 1);
83f957ec 421 SP = MARK + 1;
b59aed67 422 }
a0d0e21e 423 else {
c5df3096 424 exsv = TOPs;
ef5fe392 425 if (SvGMAGICAL(exsv)) exsv = sv_mortalcopy(exsv);
a0d0e21e 426 }
06bf62c7 427
72d74926 428 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
c5df3096
Z
429 /* well-formed exception supplied */
430 }
c5df3096 431 else {
eed484f9
DD
432 SV * const errsv = ERRSV;
433 SvGETMAGIC(errsv);
434 if (SvROK(errsv)) {
435 if (SvGMAGICAL(errsv)) {
ef5fe392 436 exsv = sv_newmortal();
eed484f9 437 sv_setsv_nomg(exsv, errsv);
ef5fe392 438 }
eed484f9 439 else exsv = errsv;
ef5fe392 440 }
eed484f9 441 else if (SvPOKp(errsv) ? SvCUR(errsv) : SvNIOKp(errsv)) {
ef5fe392 442 exsv = sv_newmortal();
eed484f9 443 sv_setsv_nomg(exsv, errsv);
ef5fe392
FC
444 sv_catpvs(exsv, "\t...caught");
445 }
446 else {
c5df3096 447 exsv = newSVpvs_flags("Warning: something's wrong", SVs_TEMP);
ef5fe392 448 }
c5df3096 449 }
3b7f69a5 450 if (SvROK(exsv) && !PL_warnhook)
147e3846 451 Perl_warn(aTHX_ "%" SVf, SVfARG(exsv));
3b7f69a5 452 else warn_sv(exsv);
a0d0e21e
LW
453 RETSETYES;
454}
455
456PP(pp_die)
457{
20b7effb 458 dSP; dMARK;
c5df3096 459 SV *exsv;
06bf62c7 460 STRLEN len;
96e176bf 461#ifdef VMS
97124ef6
FC
462 VMSISH_HUSHED =
463 VMSISH_HUSHED || (PL_curcop->op_private & OPpHUSH_VMSISH);
96e176bf 464#endif
a0d0e21e
LW
465 if (SP - MARK != 1) {
466 dTARGET;
3280af22 467 do_join(TARG, &PL_sv_no, MARK, SP);
c5df3096 468 exsv = TARG;
a0d0e21e
LW
469 SP = MARK + 1;
470 }
471 else {
c5df3096 472 exsv = TOPs;
a0d0e21e 473 }
c5df3096 474
72d74926 475 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
c5df3096
Z
476 /* well-formed exception supplied */
477 }
eed484f9
DD
478 else {
479 SV * const errsv = ERRSV;
8b3945e7 480 SvGETMAGIC(errsv);
eed484f9
DD
481 if (SvROK(errsv)) {
482 exsv = errsv;
483 if (sv_isobject(exsv)) {
484 HV * const stash = SvSTASH(SvRV(exsv));
485 GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
486 if (gv) {
487 SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
488 SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
489 EXTEND(SP, 3);
490 PUSHMARK(SP);
491 PUSHs(exsv);
492 PUSHs(file);
493 PUSHs(line);
494 PUTBACK;
495 call_sv(MUTABLE_SV(GvCV(gv)),
496 G_SCALAR|G_EVAL|G_KEEPERR);
497 exsv = sv_mortalcopy(*PL_stack_sp--);
498 }
05423cc9 499 }
4e6ea2c3 500 }
85d4e0a3 501 else if (SvOK(errsv) && (SvPV_nomg(errsv,len), len)) {
eed484f9
DD
502 exsv = sv_mortalcopy(errsv);
503 sv_catpvs(exsv, "\t...propagated");
504 }
505 else {
506 exsv = newSVpvs_flags("Died", SVs_TEMP);
507 }
c5df3096 508 }
81d52ecd 509 die_sv(exsv);
a25b5927 510 NOT_REACHED; /* NOTREACHED */
263fdd5b 511 return NULL; /* avoid missing return from non-void function warning */
a0d0e21e
LW
512}
513
514/* I/O. */
515
d682515d 516OP *
3e0cb5de 517Perl_tied_method(pTHX_ SV *methname, SV **sp, SV *const sv,
d682515d 518 const MAGIC *const mg, const U32 flags, U32 argc, ...)
6bcca55b 519{
d8ef3a16
DM
520 SV **orig_sp = sp;
521 I32 ret_args;
052a7c76 522 SSize_t extend_size;
d8ef3a16 523
d682515d 524 PERL_ARGS_ASSERT_TIED_METHOD;
6bcca55b
NC
525
526 /* Ensure that our flag bits do not overlap. */
6d59e610
LM
527 STATIC_ASSERT_STMT((TIED_METHOD_MORTALIZE_NOT_NEEDED & G_WANT) == 0);
528 STATIC_ASSERT_STMT((TIED_METHOD_ARGUMENTS_ON_STACK & G_WANT) == 0);
529 STATIC_ASSERT_STMT((TIED_METHOD_SAY & G_WANT) == 0);
6bcca55b 530
d8ef3a16
DM
531 PUTBACK; /* sp is at *foot* of args, so this pops args from old stack */
532 PUSHSTACKi(PERLSI_MAGIC);
052a7c76 533 /* extend for object + args. If argc might wrap/truncate when cast
e9548aa6
DM
534 * to SSize_t and incremented, set to -1, which will trigger a panic in
535 * EXTEND().
536 * The weird way this is written is because g++ is dumb enough to
537 * warn "comparison is always false" on something like:
538 *
539 * sizeof(a) >= sizeof(b) && a >= B_t_MAX -1
540 *
541 * (where the LH condition is false)
542 */
052a7c76 543 extend_size =
e9548aa6 544 (argc > (sizeof(argc) >= sizeof(SSize_t) ? SSize_t_MAX - 1 : argc))
052a7c76
DM
545 ? -1 : (SSize_t)argc + 1;
546 EXTEND(SP, extend_size);
6bcca55b 547 PUSHMARK(sp);
d682515d 548 PUSHs(SvTIED_obj(sv, mg));
d8ef3a16
DM
549 if (flags & TIED_METHOD_ARGUMENTS_ON_STACK) {
550 Copy(orig_sp + 2, sp + 1, argc, SV*); /* copy args to new stack */
1a8c1d59 551 sp += argc;
d8ef3a16 552 }
1a8c1d59 553 else if (argc) {
d682515d
NC
554 const U32 mortalize_not_needed
555 = flags & TIED_METHOD_MORTALIZE_NOT_NEEDED;
6bcca55b 556 va_list args;
0d5509eb 557 va_start(args, argc);
6bcca55b
NC
558 do {
559 SV *const arg = va_arg(args, SV *);
560 if(mortalize_not_needed)
561 PUSHs(arg);
562 else
563 mPUSHs(arg);
564 } while (--argc);
565 va_end(args);
566 }
567
568 PUTBACK;
d682515d 569 ENTER_with_name("call_tied_method");
94bc412f
NC
570 if (flags & TIED_METHOD_SAY) {
571 /* local $\ = "\n" */
572 SAVEGENERICSV(PL_ors_sv);
573 PL_ors_sv = newSVpvs("\n");
574 }
3e0cb5de 575 ret_args = call_sv(methname, (flags & G_WANT)|G_METHOD_NAMED);
d8ef3a16
DM
576 SPAGAIN;
577 orig_sp = sp;
578 POPSTACK;
579 SPAGAIN;
580 if (ret_args) { /* copy results back to original stack */
581 EXTEND(sp, ret_args);
582 Copy(orig_sp - ret_args + 1, sp + 1, ret_args, SV*);
583 sp += ret_args;
584 PUTBACK;
585 }
d682515d 586 LEAVE_with_name("call_tied_method");
6bcca55b
NC
587 return NORMAL;
588}
589
d682515d
NC
590#define tied_method0(a,b,c,d) \
591 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,0)
592#define tied_method1(a,b,c,d,e) \
593 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,1,e)
594#define tied_method2(a,b,c,d,e,f) \
595 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,2,e,f)
6bcca55b 596
a0d0e21e
LW
597PP(pp_open)
598{
20b7effb 599 dSP;
a567e93b
NIS
600 dMARK; dORIGMARK;
601 dTARGET;
a0d0e21e 602 SV *sv;
5b468f54 603 IO *io;
5c144d81 604 const char *tmps;
a0d0e21e 605 STRLEN len;
a567e93b 606 bool ok;
a0d0e21e 607
159b6efe 608 GV * const gv = MUTABLE_GV(*++MARK);
c4420975 609
13be902c 610 if (!isGV(gv) && !(SvTYPE(gv) == SVt_PVLV && isGV_with_GP(gv)))
cea2e8a9 611 DIE(aTHX_ PL_no_usym, "filehandle");
abc718f2 612
a79db61d 613 if ((io = GvIOp(gv))) {
a5e1d062 614 const MAGIC *mg;
36477c24 615 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
853846ea 616
a2a5de95 617 if (IoDIRP(io))
489c16bf 618 Perl_croak(aTHX_ "Cannot open %" HEKf " as a filehandle: it is already open as a dirhandle",
d0c0e7dd 619 HEKfARG(GvENAME_HEK(gv)));
abc718f2 620
ad64d0ec 621 mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
c4420975
AL
622 if (mg) {
623 /* Method's args are same as ours ... */
624 /* ... except handle is replaced by the object */
3e0cb5de 625 return Perl_tied_method(aTHX_ SV_CONST(OPEN), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC
626 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
627 sp - mark);
c4420975 628 }
4592e6ca
NIS
629 }
630
a567e93b
NIS
631 if (MARK < SP) {
632 sv = *++MARK;
633 }
634 else {
35a08ec7 635 sv = GvSVn(gv);
a567e93b
NIS
636 }
637
5c144d81 638 tmps = SvPV_const(sv, len);
d5eb9a46 639 ok = do_open6(gv, tmps, len, NULL, MARK+1, (SP-MARK));
a567e93b
NIS
640 SP = ORIGMARK;
641 if (ok)
3280af22
NIS
642 PUSHi( (I32)PL_forkprocess );
643 else if (PL_forkprocess == 0) /* we are a new child */
725c44f9 644 PUSHs(&PL_sv_zero);
a0d0e21e
LW
645 else
646 RETPUSHUNDEF;
647 RETURN;
648}
649
650PP(pp_close)
651{
20b7effb 652 dSP;
12dc5f94
DM
653 /* pp_coreargs pushes a NULL to indicate no args passed to
654 * CORE::close() */
30901a8a
FC
655 GV * const gv =
656 MAXARG == 0 || (!TOPs && !POPs) ? PL_defoutgv : MUTABLE_GV(POPs);
1d603a67 657
2addaaf3
NC
658 if (MAXARG == 0)
659 EXTEND(SP, 1);
660
a79db61d
AL
661 if (gv) {
662 IO * const io = GvIO(gv);
663 if (io) {
a5e1d062 664 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 665 if (mg) {
3e0cb5de 666 return tied_method0(SV_CONST(CLOSE), SP, MUTABLE_SV(io), mg);
a79db61d
AL
667 }
668 }
1d603a67 669 }
54310121 670 PUSHs(boolSV(do_close(gv, TRUE)));
a0d0e21e
LW
671 RETURN;
672}
673
674PP(pp_pipe_op)
675{
a0d0e21e 676#ifdef HAS_PIPE
9cad6237 677 dSP;
eb578fdb
KW
678 IO *rstio;
679 IO *wstio;
a0d0e21e
LW
680 int fd[2];
681
159b6efe
NC
682 GV * const wgv = MUTABLE_GV(POPs);
683 GV * const rgv = MUTABLE_GV(POPs);
a0d0e21e 684
a0d0e21e 685 rstio = GvIOn(rgv);
a0d0e21e
LW
686 if (IoIFP(rstio))
687 do_close(rgv, FALSE);
49225470
DD
688
689 wstio = GvIOn(wgv);
a0d0e21e
LW
690 if (IoIFP(wstio))
691 do_close(wgv, FALSE);
692
74df577f 693 if (PerlProc_pipe_cloexec(fd) < 0)
a0d0e21e
LW
694 goto badexit;
695
147e3846
KW
696 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r" PIPE_OPEN_MODE);
697 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w" PIPE_OPEN_MODE);
b5ac89c3 698 IoOFP(rstio) = IoIFP(rstio);
a0d0e21e 699 IoIFP(wstio) = IoOFP(wstio);
50952442
JH
700 IoTYPE(rstio) = IoTYPE_RDONLY;
701 IoTYPE(wstio) = IoTYPE_WRONLY;
a0d0e21e
LW
702
703 if (!IoIFP(rstio) || !IoOFP(wstio)) {
a79db61d
AL
704 if (IoIFP(rstio))
705 PerlIO_close(IoIFP(rstio));
706 else
707 PerlLIO_close(fd[0]);
708 if (IoOFP(wstio))
709 PerlIO_close(IoOFP(wstio));
710 else
711 PerlLIO_close(fd[1]);
a0d0e21e
LW
712 goto badexit;
713 }
a0d0e21e
LW
714 RETPUSHYES;
715
7b52d656 716 badexit:
a0d0e21e
LW
717 RETPUSHUNDEF;
718#else
cea2e8a9 719 DIE(aTHX_ PL_no_func, "pipe");
a0d0e21e
LW
720#endif
721}
722
723PP(pp_fileno)
724{
20b7effb 725 dSP; dTARGET;
a0d0e21e
LW
726 GV *gv;
727 IO *io;
760ac839 728 PerlIO *fp;
a5e1d062 729 const MAGIC *mg;
4592e6ca 730
a0d0e21e
LW
731 if (MAXARG < 1)
732 RETPUSHUNDEF;
159b6efe 733 gv = MUTABLE_GV(POPs);
9c9f25b8 734 io = GvIO(gv);
4592e6ca 735
9c9f25b8 736 if (io
ad64d0ec 737 && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar)))
5b468f54 738 {
3e0cb5de 739 return tied_method0(SV_CONST(FILENO), SP, MUTABLE_SV(io), mg);
4592e6ca
NIS
740 }
741
67f2cc75
AC
742 if (io && IoDIRP(io)) {
743#if defined(HAS_DIRFD) || defined(HAS_DIR_DD_FD)
744 PUSHi(my_dirfd(IoDIRP(io)));
745 RETURN;
746#elif defined(ENOTSUP)
747 errno = ENOTSUP; /* Operation not supported */
748 RETPUSHUNDEF;
749#elif defined(EOPNOTSUPP)
750 errno = EOPNOTSUPP; /* Operation not supported on socket */
751 RETPUSHUNDEF;
752#else
753 errno = EINVAL; /* Invalid argument */
754 RETPUSHUNDEF;
755#endif
756 }
757
9c9f25b8 758 if (!io || !(fp = IoIFP(io))) {
c289d2f7
JH
759 /* Can't do this because people seem to do things like
760 defined(fileno($foo)) to check whether $foo is a valid fh.
51087808
NC
761
762 report_evil_fh(gv);
c289d2f7 763 */
a0d0e21e 764 RETPUSHUNDEF;
c289d2f7
JH
765 }
766
760ac839 767 PUSHi(PerlIO_fileno(fp));
a0d0e21e
LW
768 RETURN;
769}
770
771PP(pp_umask)
772{
27da23d5 773 dSP;
d7e492a4 774#ifdef HAS_UMASK
27da23d5 775 dTARGET;
761237fe 776 Mode_t anum;
a0d0e21e 777
58536d15 778 if (MAXARG < 1 || (!TOPs && !POPs)) {
b0b546b3
GA
779 anum = PerlLIO_umask(022);
780 /* setting it to 022 between the two calls to umask avoids
781 * to have a window where the umask is set to 0 -- meaning
782 * that another thread could create world-writeable files. */
783 if (anum != 022)
784 (void)PerlLIO_umask(anum);
a0d0e21e
LW
785 }
786 else
6ad3d225 787 anum = PerlLIO_umask(POPi);
a0d0e21e
LW
788 TAINT_PROPER("umask");
789 XPUSHi(anum);
790#else
a0288114 791 /* Only DIE if trying to restrict permissions on "user" (self).
eec2d3df
GS
792 * Otherwise it's harmless and more useful to just return undef
793 * since 'group' and 'other' concepts probably don't exist here. */
58536d15 794 if (MAXARG >= 1 && (TOPs||POPs) && (POPi & 0700))
cea2e8a9 795 DIE(aTHX_ "umask not implemented");
6b88bc9c 796 XPUSHs(&PL_sv_undef);
a0d0e21e
LW
797#endif
798 RETURN;
799}
800
801PP(pp_binmode)
802{
20b7effb 803 dSP;
a0d0e21e
LW
804 GV *gv;
805 IO *io;
760ac839 806 PerlIO *fp;
a0714e2c 807 SV *discp = NULL;
a0d0e21e
LW
808
809 if (MAXARG < 1)
810 RETPUSHUNDEF;
60382766 811 if (MAXARG > 1) {
16fe6d59 812 discp = POPs;
60382766 813 }
a0d0e21e 814
159b6efe 815 gv = MUTABLE_GV(POPs);
9c9f25b8 816 io = GvIO(gv);
4592e6ca 817
9c9f25b8 818 if (io) {
a5e1d062 819 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 820 if (mg) {
bc0c81ca
NC
821 /* This takes advantage of the implementation of the varargs
822 function, which I don't think that the optimiser will be able to
823 figure out. Although, as it's a static function, in theory it
824 could. */
3e0cb5de 825 return Perl_tied_method(aTHX_ SV_CONST(BINMODE), SP, MUTABLE_SV(io), mg,
d682515d
NC
826 G_SCALAR|TIED_METHOD_MORTALIZE_NOT_NEEDED,
827 discp ? 1 : 0, discp);
a79db61d 828 }
4592e6ca 829 }
a0d0e21e 830
9c9f25b8 831 if (!io || !(fp = IoIFP(io))) {
51087808 832 report_evil_fh(gv);
b5fe5ca2 833 SETERRNO(EBADF,RMS_IFI);
50f846a7
SC
834 RETPUSHUNDEF;
835 }
a0d0e21e 836
40d98b49 837 PUTBACK;
f0a78170 838 {
a79b25b7
VP
839 STRLEN len = 0;
840 const char *d = NULL;
841 int mode;
842 if (discp)
843 d = SvPV_const(discp, len);
844 mode = mode_from_discipline(d, len);
f0a78170
NC
845 if (PerlIO_binmode(aTHX_ fp, IoTYPE(io), mode, d)) {
846 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
847 if (!PerlIO_binmode(aTHX_ IoOFP(io), IoTYPE(io), mode, d)) {
848 SPAGAIN;
849 RETPUSHUNDEF;
850 }
851 }
852 SPAGAIN;
853 RETPUSHYES;
854 }
855 else {
856 SPAGAIN;
857 RETPUSHUNDEF;
38af81ff 858 }
40d98b49 859 }
a0d0e21e
LW
860}
861
862PP(pp_tie)
863{
20b7effb 864 dSP; dMARK;
a0d0e21e 865 HV* stash;
07822e36 866 GV *gv = NULL;
a0d0e21e 867 SV *sv;
1df70142 868 const I32 markoff = MARK - PL_stack_base;
e1ec3a88 869 const char *methname;
14befaf4 870 int how = PERL_MAGIC_tied;
e336de0d 871 U32 items;
c4420975 872 SV *varsv = *++MARK;
a0d0e21e 873
6b05c17a
NIS
874 switch(SvTYPE(varsv)) {
875 case SVt_PVHV:
aec0c0cc
FC
876 {
877 HE *entry;
6b05c17a 878 methname = "TIEHASH";
aec0c0cc
FC
879 if (HvLAZYDEL(varsv) && (entry = HvEITER((HV *)varsv))) {
880 HvLAZYDEL_off(varsv);
881 hv_free_ent((HV *)varsv, entry);
882 }
85fbaab2 883 HvEITER_set(MUTABLE_HV(varsv), 0);
6b05c17a 884 break;
aec0c0cc 885 }
6b05c17a
NIS
886 case SVt_PVAV:
887 methname = "TIEARRAY";
ce65bc73
FC
888 if (!AvREAL(varsv)) {
889 if (!AvREIFY(varsv))
890 Perl_croak(aTHX_ "Cannot tie unreifiable array");
891 av_clear((AV *)varsv);
892 AvREIFY_off(varsv);
893 AvREAL_on(varsv);
894 }
6b05c17a
NIS
895 break;
896 case SVt_PVGV:
13be902c 897 case SVt_PVLV:
8bb5f786 898 if (isGV_with_GP(varsv) && !SvFAKE(varsv)) {
6e592b3a
BM
899 methname = "TIEHANDLE";
900 how = PERL_MAGIC_tiedscalar;
901 /* For tied filehandles, we apply tiedscalar magic to the IO
902 slot of the GP rather than the GV itself. AMS 20010812 */
903 if (!GvIOp(varsv))
904 GvIOp(varsv) = newIO();
ad64d0ec 905 varsv = MUTABLE_SV(GvIOp(varsv));
6e592b3a
BM
906 break;
907 }
13733cde
FC
908 if (SvTYPE(varsv) == SVt_PVLV && LvTYPE(varsv) == 'y') {
909 vivify_defelem(varsv);
910 varsv = LvTARG(varsv);
911 }
924ba076 912 /* FALLTHROUGH */
6b05c17a
NIS
913 default:
914 methname = "TIESCALAR";
14befaf4 915 how = PERL_MAGIC_tiedscalar;
6b05c17a
NIS
916 break;
917 }
e336de0d 918 items = SP - MARK++;
a91d1d42 919 if (sv_isobject(*MARK)) { /* Calls GET magic. */
d343c3ef 920 ENTER_with_name("call_TIE");
e788e7d3 921 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 922 PUSHMARK(SP);
eb160463 923 EXTEND(SP,(I32)items);
e336de0d
GS
924 while (items--)
925 PUSHs(*MARK++);
926 PUTBACK;
864dbfa3 927 call_method(methname, G_SCALAR);
301e8125 928 }
6b05c17a 929 else {
086d2913
NC
930 /* Can't use call_method here, else this: fileno FOO; tie @a, "FOO"
931 * will attempt to invoke IO::File::TIEARRAY, with (best case) the
932 * wrong error message, and worse case, supreme action at a distance.
933 * (Sorry obfuscation writers. You're not going to be given this one.)
6b05c17a 934 */
4886938f 935 stash = gv_stashsv(*MARK, 0);
0b077c88 936 if (!stash) {
32207c63
AC
937 if (SvROK(*MARK))
938 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%" SVf "\"",
939 methname, SVfARG(*MARK));
940 else if (isGV(*MARK)) {
941 /* If the glob doesn't name an existing package, using
942 * SVfARG(*MARK) would yield "*Foo::Bar" or *main::Foo. So
943 * generate the name for the error message explicitly. */
7594f18f 944 SV *stashname = sv_2mortal(newSV(0));
32207c63
AC
945 gv_fullname4(stashname, (GV *) *MARK, NULL, FALSE);
946 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%" SVf "\"",
947 methname, SVfARG(stashname));
948 }
949 else {
950 SV *stashname = !SvPOK(*MARK) ? &PL_sv_no
951 : SvCUR(*MARK) ? *MARK
952 : sv_2mortal(newSVpvs("main"));
953 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%" SVf "\""
954 " (perhaps you forgot to load \"%" SVf "\"?)",
955 methname, SVfARG(stashname), SVfARG(stashname));
0b077c88 956 }
0b077c88
DIM
957 }
958 else if (!(gv = gv_fetchmethod(stash, methname))) {
959 /* The effective name can only be NULL for stashes that have
960 * been deleted from the symbol table, which this one can't
961 * be, since we just looked it up by name.
962 */
147e3846 963 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%" HEKf "\"",
0b077c88
DIM
964 methname, HvENAME_HEK_NN(stash));
965 }
d343c3ef 966 ENTER_with_name("call_TIE");
e788e7d3 967 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 968 PUSHMARK(SP);
eb160463 969 EXTEND(SP,(I32)items);
e336de0d
GS
970 while (items--)
971 PUSHs(*MARK++);
972 PUTBACK;
ad64d0ec 973 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
6b05c17a 974 }
a0d0e21e
LW
975 SPAGAIN;
976
977 sv = TOPs;
d3acc0f7 978 POPSTACK;
a0d0e21e 979 if (sv_isobject(sv)) {
33c27489 980 sv_unmagic(varsv, how);
ae21d580 981 /* Croak if a self-tie on an aggregate is attempted. */
b881518d 982 if (varsv == SvRV(sv) &&
d87ebaca
YST
983 (SvTYPE(varsv) == SVt_PVAV ||
984 SvTYPE(varsv) == SVt_PVHV))
ae21d580
JH
985 Perl_croak(aTHX_
986 "Self-ties of arrays and hashes are not supported");
a0714e2c 987 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
a0d0e21e 988 }
d343c3ef 989 LEAVE_with_name("call_TIE");
3280af22 990 SP = PL_stack_base + markoff;
a0d0e21e
LW
991 PUSHs(sv);
992 RETURN;
993}
994
b1c05ba5
DM
995
996/* also used for: pp_dbmclose() */
997
a0d0e21e
LW
998PP(pp_untie)
999{
20b7effb 1000 dSP;
5b468f54 1001 MAGIC *mg;
33c27489 1002 SV *sv = POPs;
1df70142 1003 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 1004 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
55497cff 1005
ca0d4ed9 1006 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
5b468f54
AMS
1007 RETPUSHYES;
1008
13733cde
FC
1009 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y' &&
1010 !(sv = defelem_target(sv, NULL))) RETPUSHUNDEF;
1011
65eba18f 1012 if ((mg = SvTIED_mg(sv, how))) {
1b6737cc 1013 SV * const obj = SvRV(SvTIED_obj(sv, mg));
e7e69c85 1014 if (obj && SvSTASH(obj)) {
c4420975 1015 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
0bd48802 1016 CV *cv;
c4420975 1017 if (gv && isGV(gv) && (cv = GvCV(gv))) {
fa2b88e0 1018 PUSHMARK(SP);
c33ef3ac 1019 PUSHs(SvTIED_obj(MUTABLE_SV(gv), mg));
6e449a3a 1020 mXPUSHi(SvREFCNT(obj) - 1);
fa2b88e0 1021 PUTBACK;
d343c3ef 1022 ENTER_with_name("call_UNTIE");
ad64d0ec 1023 call_sv(MUTABLE_SV(cv), G_VOID);
d343c3ef 1024 LEAVE_with_name("call_UNTIE");
fa2b88e0
JS
1025 SPAGAIN;
1026 }
a2a5de95
NC
1027 else if (mg && SvREFCNT(obj) > 1) {
1028 Perl_ck_warner(aTHX_ packWARN(WARN_UNTIE),
147e3846 1029 "untie attempted while %" UVuf " inner references still exist",
a2a5de95 1030 (UV)SvREFCNT(obj) - 1 ) ;
c4420975 1031 }
cbdc8872
PP
1032 }
1033 }
38193a09 1034 sv_unmagic(sv, how) ;
55497cff 1035 RETPUSHYES;
a0d0e21e
LW
1036}
1037
c07a80fd
PP
1038PP(pp_tied)
1039{
39644a26 1040 dSP;
1b6737cc 1041 const MAGIC *mg;
b3cf4821 1042 dTOPss;
1df70142 1043 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 1044 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
5b468f54 1045
4be76e1f 1046 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
b3cf4821 1047 goto ret_undef;
c07a80fd 1048
13733cde 1049 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y' &&
b3cf4821 1050 !(sv = defelem_target(sv, NULL))) goto ret_undef;
13733cde 1051
155aba94 1052 if ((mg = SvTIED_mg(sv, how))) {
b3cf4821
DD
1053 SETs(SvTIED_obj(sv, mg));
1054 return NORMAL; /* PUTBACK not needed, pp_tied never moves SP */
c07a80fd 1055 }
b3cf4821
DD
1056 ret_undef:
1057 SETs(&PL_sv_undef);
1058 return NORMAL;
c07a80fd
PP
1059}
1060
a0d0e21e
LW
1061PP(pp_dbmopen)
1062{
20b7effb 1063 dSP;
a0d0e21e
LW
1064 dPOPPOPssrl;
1065 HV* stash;
07822e36 1066 GV *gv = NULL;
a0d0e21e 1067
85fbaab2 1068 HV * const hv = MUTABLE_HV(POPs);
84bafc02 1069 SV * const sv = newSVpvs_flags("AnyDBM_File", SVs_TEMP);
da51bb9b 1070 stash = gv_stashsv(sv, 0);
8ebc5c01 1071 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
a0d0e21e 1072 PUTBACK;
864dbfa3 1073 require_pv("AnyDBM_File.pm");
a0d0e21e 1074 SPAGAIN;
eff494dd 1075 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH")))
cea2e8a9 1076 DIE(aTHX_ "No dbm on this machine");
a0d0e21e
LW
1077 }
1078
57d3b86d 1079 ENTER;
924508f0 1080 PUSHMARK(SP);
6b05c17a 1081
924508f0 1082 EXTEND(SP, 5);
a0d0e21e
LW
1083 PUSHs(sv);
1084 PUSHs(left);
1085 if (SvIV(right))
6e449a3a 1086 mPUSHu(O_RDWR|O_CREAT);
a0d0e21e 1087 else
480e0d3c 1088 {
6e449a3a 1089 mPUSHu(O_RDWR);
480e0d3c
FC
1090 if (!SvOK(right)) right = &PL_sv_no;
1091 }
a0d0e21e 1092 PUSHs(right);
57d3b86d 1093 PUTBACK;
ad64d0ec 1094 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
a0d0e21e
LW
1095 SPAGAIN;
1096
1097 if (!sv_isobject(TOPs)) {
924508f0
GS
1098 SP--;
1099 PUSHMARK(SP);
a0d0e21e
LW
1100 PUSHs(sv);
1101 PUSHs(left);
6e449a3a 1102 mPUSHu(O_RDONLY);
a0d0e21e 1103 PUSHs(right);
a0d0e21e 1104 PUTBACK;
ad64d0ec 1105 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
a0d0e21e 1106 SPAGAIN;
4b523e79
DD
1107 if (sv_isobject(TOPs))
1108 goto retie;
a0d0e21e 1109 }
4b523e79
DD
1110 else {
1111 retie:
ad64d0ec
NC
1112 sv_unmagic(MUTABLE_SV(hv), PERL_MAGIC_tied);
1113 sv_magic(MUTABLE_SV(hv), TOPs, PERL_MAGIC_tied, NULL, 0);
6b05c17a 1114 }
a0d0e21e
LW
1115 LEAVE;
1116 RETURN;
1117}
1118
a0d0e21e
LW
1119PP(pp_sselect)
1120{
a0d0e21e 1121#ifdef HAS_SELECT
20b7effb 1122 dSP; dTARGET;
eb578fdb
KW
1123 I32 i;
1124 I32 j;
1125 char *s;
1126 SV *sv;
65202027 1127 NV value;
a0d0e21e
LW
1128 I32 maxlen = 0;
1129 I32 nfound;
1130 struct timeval timebuf;
1131 struct timeval *tbuf = &timebuf;
1132 I32 growsize;
1133 char *fd_sets[4];
e26c6904 1134 SV *svs[4];
a0d0e21e
LW
1135#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1136 I32 masksize;
1137 I32 offset;
1138 I32 k;
1139
1140# if BYTEORDER & 0xf0000
1141# define ORDERBYTE (0x88888888 - BYTEORDER)
1142# else
1143# define ORDERBYTE (0x4444 - BYTEORDER)
1144# endif
1145
1146#endif
1147
1148 SP -= 4;
1149 for (i = 1; i <= 3; i++) {
e26c6904 1150 SV * const sv = svs[i] = SP[i];
9d6d5a79 1151 SvGETMAGIC(sv);
15547071
GA
1152 if (!SvOK(sv))
1153 continue;
ba3062ae
FC
1154 if (SvREADONLY(sv)) {
1155 if (!(SvPOK(sv) && SvCUR(sv) == 0))
cb077ed2 1156 Perl_croak_no_modify();
ba3062ae
FC
1157 }
1158 else if (SvIsCOW(sv)) sv_force_normal_flags(sv, 0);
4ef2275c 1159 if (!SvPOK(sv)) {
9d6d5a79
FC
1160 if (!SvPOKp(sv))
1161 Perl_ck_warner(aTHX_ packWARN(WARN_MISC),
1162 "Non-string passed as bitmask");
e26c6904
FC
1163 if (SvGAMAGIC(sv)) {
1164 svs[i] = sv_newmortal();
1165 sv_copypv_nomg(svs[i], sv);
1166 }
1167 else
1168 SvPV_force_nomg_nolen(sv); /* force string conversion */
4ef2275c 1169 }
e26c6904 1170 j = SvCUR(svs[i]);
a0d0e21e
LW
1171 if (maxlen < j)
1172 maxlen = j;
1173 }
1174
5ff3f7a4 1175/* little endians can use vecs directly */
e366b469 1176#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
5ff3f7a4 1177# ifdef NFDBITS
a0d0e21e 1178
5ff3f7a4
GS
1179# ifndef NBBY
1180# define NBBY 8
1181# endif
a0d0e21e
LW
1182
1183 masksize = NFDBITS / NBBY;
5ff3f7a4 1184# else
a0d0e21e 1185 masksize = sizeof(long); /* documented int, everyone seems to use long */
5ff3f7a4 1186# endif
a0d0e21e
LW
1187 Zero(&fd_sets[0], 4, char*);
1188#endif
1189
ad517f75
MHM
1190# if SELECT_MIN_BITS == 1
1191 growsize = sizeof(fd_set);
1192# else
1193# if defined(__GLIBC__) && defined(__FD_SETSIZE)
1194# undef SELECT_MIN_BITS
1195# define SELECT_MIN_BITS __FD_SETSIZE
1196# endif
e366b469
PG
1197 /* If SELECT_MIN_BITS is greater than one we most probably will want
1198 * to align the sizes with SELECT_MIN_BITS/8 because for example
1199 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
f05550c0 1200 * UNIX, Solaris, Darwin) the smallest quantum select() operates
e366b469
PG
1201 * on (sets/tests/clears bits) is 32 bits. */
1202 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
e366b469
PG
1203# endif
1204
a0d0e21e 1205 sv = SP[4];
90eaaf02 1206 SvGETMAGIC(sv);
a0d0e21e 1207 if (SvOK(sv)) {
90eaaf02 1208 value = SvNV_nomg(sv);
a0d0e21e
LW
1209 if (value < 0.0)
1210 value = 0.0;
1211 timebuf.tv_sec = (long)value;
65202027 1212 value -= (NV)timebuf.tv_sec;
a0d0e21e
LW
1213 timebuf.tv_usec = (long)(value * 1000000.0);
1214 }
1215 else
4608196e 1216 tbuf = NULL;
a0d0e21e
LW
1217
1218 for (i = 1; i <= 3; i++) {
e26c6904 1219 sv = svs[i];
15547071 1220 if (!SvOK(sv) || SvCUR(sv) == 0) {
a0d0e21e
LW
1221 fd_sets[i] = 0;
1222 continue;
1223 }
4ef2275c 1224 assert(SvPOK(sv));
a0d0e21e
LW
1225 j = SvLEN(sv);
1226 if (j < growsize) {
1227 Sv_Grow(sv, growsize);
a0d0e21e 1228 }
c07a80fd
PP
1229 j = SvCUR(sv);
1230 s = SvPVX(sv) + j;
1231 while (++j <= growsize) {
1232 *s++ = '\0';
1233 }
1234
a0d0e21e
LW
1235#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1236 s = SvPVX(sv);
a02a5408 1237 Newx(fd_sets[i], growsize, char);
a0d0e21e
LW
1238 for (offset = 0; offset < growsize; offset += masksize) {
1239 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1240 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1241 }
1242#else
1243 fd_sets[i] = SvPVX(sv);
1244#endif
1245 }
1246
dc4c69d9
JH
1247#ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1248 /* Can't make just the (void*) conditional because that would be
1249 * cpp #if within cpp macro, and not all compilers like that. */
1250 nfound = PerlSock_select(
1251 maxlen * 8,
1252 (Select_fd_set_t) fd_sets[1],
1253 (Select_fd_set_t) fd_sets[2],
1254 (Select_fd_set_t) fd_sets[3],
1255 (void*) tbuf); /* Workaround for compiler bug. */
1256#else
6ad3d225 1257 nfound = PerlSock_select(
a0d0e21e
LW
1258 maxlen * 8,
1259 (Select_fd_set_t) fd_sets[1],
1260 (Select_fd_set_t) fd_sets[2],
1261 (Select_fd_set_t) fd_sets[3],
1262 tbuf);
dc4c69d9 1263#endif
a0d0e21e
LW
1264 for (i = 1; i <= 3; i++) {
1265 if (fd_sets[i]) {
e26c6904 1266 sv = svs[i];
a0d0e21e
LW
1267#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1268 s = SvPVX(sv);
1269 for (offset = 0; offset < growsize; offset += masksize) {
1270 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1271 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1272 }
1273 Safefree(fd_sets[i]);
1274#endif
e26c6904
FC
1275 if (sv != SP[i])
1276 SvSetMagicSV(SP[i], sv);
1277 else
1278 SvSETMAGIC(sv);
a0d0e21e
LW
1279 }
1280 }
1281
4189264e 1282 PUSHi(nfound);
82334630 1283 if (GIMME_V == G_ARRAY && tbuf) {
65202027
DS
1284 value = (NV)(timebuf.tv_sec) +
1285 (NV)(timebuf.tv_usec) / 1000000.0;
6e449a3a 1286 mPUSHn(value);
a0d0e21e
LW
1287 }
1288 RETURN;
1289#else
cea2e8a9 1290 DIE(aTHX_ "select not implemented");
a0d0e21e
LW
1291#endif
1292}
1293
8226a3d7 1294/*
dcccc8ff
KW
1295
1296=head1 GV Functions
1297
8226a3d7
NC
1298=for apidoc setdefout
1299
796b6530
KW
1300Sets C<PL_defoutgv>, the default file handle for output, to the passed in
1301typeglob. As C<PL_defoutgv> "owns" a reference on its typeglob, the reference
8226a3d7 1302count of the passed in typeglob is increased by one, and the reference count
796b6530 1303of the typeglob that C<PL_defoutgv> points to is decreased by one.
8226a3d7
NC
1304
1305=cut
1306*/
1307
4633a7c4 1308void
864dbfa3 1309Perl_setdefout(pTHX_ GV *gv)
4633a7c4 1310{
656457d0
DM
1311 GV *oldgv = PL_defoutgv;
1312
9a9bb270 1313 PERL_ARGS_ASSERT_SETDEFOUT;
656457d0 1314
9a9bb270 1315 SvREFCNT_inc_simple_void_NN(gv);
3280af22 1316 PL_defoutgv = gv;
656457d0 1317 SvREFCNT_dec(oldgv);
4633a7c4
LW
1318}
1319
a0d0e21e
LW
1320PP(pp_select)
1321{
20b7effb 1322 dSP; dTARGET;
4633a7c4 1323 HV *hv;
159b6efe 1324 GV * const newdefout = (PL_op->op_private > 0) ? (MUTABLE_GV(POPs)) : NULL;
099be4f1 1325 GV * egv = GvEGVx(PL_defoutgv);
0df2568b 1326 GV * const *gvp;
4633a7c4 1327
4633a7c4 1328 if (!egv)
3280af22 1329 egv = PL_defoutgv;
099be4f1 1330 hv = isGV_with_GP(egv) ? GvSTASH(egv) : NULL;
0df2568b 1331 gvp = hv && HvENAME(hv)
204263bc
FC
1332 ? (GV**)hv_fetch(hv, GvNAME(egv), HEK_UTF8(GvNAME_HEK(egv)) ? -GvNAMELEN(egv) : GvNAMELEN(egv), FALSE)
1333 : NULL;
0df2568b 1334 if (gvp && *gvp == egv) {
bd61b366 1335 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
f86702cc 1336 XPUSHTARG;
0df2568b
FC
1337 }
1338 else {
ad64d0ec 1339 mXPUSHs(newRV(MUTABLE_SV(egv)));
4633a7c4
LW
1340 }
1341
1342 if (newdefout) {
ded8aa31
GS
1343 if (!GvIO(newdefout))
1344 gv_IOadd(newdefout);
4633a7c4
LW
1345 setdefout(newdefout);
1346 }
1347
a0d0e21e
LW
1348 RETURN;
1349}
1350
1351PP(pp_getc)
1352{
20b7effb 1353 dSP; dTARGET;
12dc5f94
DM
1354 /* pp_coreargs pushes a NULL to indicate no args passed to
1355 * CORE::getc() */
30901a8a
FC
1356 GV * const gv =
1357 MAXARG==0 || (!TOPs && !POPs) ? PL_stdingv : MUTABLE_GV(POPs);
9c9f25b8 1358 IO *const io = GvIO(gv);
2ae324a7 1359
ac3697cd
NC
1360 if (MAXARG == 0)
1361 EXTEND(SP, 1);
1362
9c9f25b8 1363 if (io) {
a5e1d062 1364 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1365 if (mg) {
1c23e2bd 1366 const U8 gimme = GIMME_V;
3e0cb5de 1367 Perl_tied_method(aTHX_ SV_CONST(GETC), SP, MUTABLE_SV(io), mg, gimme, 0);
0240605e
NC
1368 if (gimme == G_SCALAR) {
1369 SPAGAIN;
a79db61d 1370 SvSetMagicSV_nosteal(TARG, TOPs);
0240605e
NC
1371 }
1372 return NORMAL;
a79db61d 1373 }
2ae324a7 1374 }
90133b69 1375 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
51087808 1376 if (!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
831e4cc3 1377 report_evil_fh(gv);
b5fe5ca2 1378 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1379 RETPUSHUNDEF;
90133b69 1380 }
bbce6d69 1381 TAINT;
76f68e9b 1382 sv_setpvs(TARG, " ");
9bc64814 1383 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
7d59b7e4
NIS
1384 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1385 /* Find out how many bytes the char needs */
aa07b2f6 1386 Size_t len = UTF8SKIP(SvPVX_const(TARG));
7d59b7e4
NIS
1387 if (len > 1) {
1388 SvGROW(TARG,len+1);
1389 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1390 SvCUR_set(TARG,1+len);
1391 }
1392 SvUTF8_on(TARG);
1393 }
88c34251 1394 else SvUTF8_off(TARG);
a0d0e21e
LW
1395 PUSHTARG;
1396 RETURN;
1397}
1398
76e3520e 1399STATIC OP *
cea2e8a9 1400S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
a0d0e21e 1401{
eb578fdb 1402 PERL_CONTEXT *cx;
1c23e2bd 1403 const U8 gimme = GIMME_V;
a0d0e21e 1404
7918f24d
NC
1405 PERL_ARGS_ASSERT_DOFORM;
1406
535e48ea 1407 if (CvCLONE(cv))
7b190374
NC
1408 cv = MUTABLE_CV(sv_2mortal(MUTABLE_SV(cv_clone(cv))));
1409
ed8ff0f3 1410 cx = cx_pushblock(CXt_FORMAT, gimme, PL_stack_sp, PL_savestack_ix);
6a7d52cc 1411 cx_pushformat(cx, cv, retop, gv);
d2af2719 1412 if (CvDEPTH(cv) >= 2)
f32c7e86 1413 pad_push(CvPADLIST(cv), CvDEPTH(cv));
f32c7e86 1414 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), CvDEPTH(cv));
a0d0e21e 1415
4633a7c4 1416 setdefout(gv); /* locally select filehandle so $% et al work */
a0d0e21e
LW
1417 return CvSTART(cv);
1418}
1419
1420PP(pp_enterwrite)
1421{
39644a26 1422 dSP;
eb578fdb
KW
1423 GV *gv;
1424 IO *io;
a0d0e21e 1425 GV *fgv;
07822e36 1426 CV *cv = NULL;
a0d0e21e 1427
2addaaf3 1428 if (MAXARG == 0) {
2addaaf3 1429 EXTEND(SP, 1);
49225470 1430 gv = PL_defoutgv;
2addaaf3 1431 }
a0d0e21e 1432 else {
159b6efe 1433 gv = MUTABLE_GV(POPs);
a0d0e21e 1434 if (!gv)
3280af22 1435 gv = PL_defoutgv;
a0d0e21e 1436 }
a0d0e21e
LW
1437 io = GvIO(gv);
1438 if (!io) {
1439 RETPUSHNO;
1440 }
1441 if (IoFMT_GV(io))
1442 fgv = IoFMT_GV(io);
1443 else
1444 fgv = gv;
1445
2d1ebc9b 1446 assert(fgv);
a79db61d 1447
a0d0e21e 1448 cv = GvFORM(fgv);
a0d0e21e 1449 if (!cv) {
19742f39 1450 SV * const tmpsv = sv_newmortal();
f4a7049d 1451 gv_efullname4(tmpsv, fgv, NULL, FALSE);
147e3846 1452 DIE(aTHX_ "Undefined format \"%" SVf "\" called", SVfARG(tmpsv));
a0d0e21e 1453 }
44a8e56a 1454 IoFLAGS(io) &= ~IOf_DIDTOP;
8e4ecf23 1455 RETURNOP(doform(cv,gv,PL_op->op_next));
a0d0e21e
LW
1456}
1457
1458PP(pp_leavewrite)
1459{
20b7effb 1460 dSP;
4ebe6e95 1461 GV * const gv = CX_CUR()->blk_format.gv;
eb578fdb 1462 IO * const io = GvIOp(gv);
8b8cacda 1463 PerlIO *ofp;
760ac839 1464 PerlIO *fp;
eb578fdb 1465 PERL_CONTEXT *cx;
8f89e5a9 1466 OP *retop;
617a4f41 1467 bool is_return = cBOOL(PL_op->op_type == OP_RETURN);
a0d0e21e 1468
617a4f41 1469 if (is_return || !io || !(ofp = IoOFP(io)))
8b8cacda 1470 goto forget_top;
1471
760ac839 1472 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1473 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
8b8cacda 1474
3280af22
NIS
1475 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1476 PL_formtarget != PL_toptarget)
a0d0e21e 1477 {
4633a7c4
LW
1478 GV *fgv;
1479 CV *cv;
a0d0e21e
LW
1480 if (!IoTOP_GV(io)) {
1481 GV *topgv;
a0d0e21e
LW
1482
1483 if (!IoTOP_NAME(io)) {
1b6737cc 1484 SV *topname;
a0d0e21e
LW
1485 if (!IoFMT_NAME(io))
1486 IoFMT_NAME(io) = savepv(GvNAME(gv));
147e3846 1487 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%" HEKf "_TOP",
d0c0e7dd 1488 HEKfARG(GvNAME_HEK(gv))));
f776e3cd 1489 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
748a9306 1490 if ((topgv && GvFORM(topgv)) ||
fafc274c 1491 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
2e0de35c 1492 IoTOP_NAME(io) = savesvpv(topname);
a0d0e21e 1493 else
89529cee 1494 IoTOP_NAME(io) = savepvs("top");
a0d0e21e 1495 }
f776e3cd 1496 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
a0d0e21e 1497 if (!topgv || !GvFORM(topgv)) {
b929a54b 1498 IoLINES_LEFT(io) = IoPAGE_LEN(io);
a0d0e21e
LW
1499 goto forget_top;
1500 }
1501 IoTOP_GV(io) = topgv;
1502 }
748a9306
LW
1503 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1504 I32 lines = IoLINES_LEFT(io);
504618e9 1505 const char *s = SvPVX_const(PL_formtarget);
5716a028 1506 const char *e = SvEND(PL_formtarget);
8e07c86e
AD
1507 if (lines <= 0) /* Yow, header didn't even fit!!! */
1508 goto forget_top;
748a9306 1509 while (lines-- > 0) {
5716a028 1510 s = (char *) memchr(s, '\n', e - s);
748a9306
LW
1511 if (!s)
1512 break;
1513 s++;
1514 }
1515 if (s) {
f54cb97a 1516 const STRLEN save = SvCUR(PL_formtarget);
aa07b2f6 1517 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
d75029d0
NIS
1518 do_print(PL_formtarget, ofp);
1519 SvCUR_set(PL_formtarget, save);
3280af22
NIS
1520 sv_chop(PL_formtarget, s);
1521 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW
1522 }
1523 }
a0d0e21e 1524 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
f6dfc736 1525 do_print(GvSV(gv_fetchpvs("\f", GV_ADD, SVt_PV)), ofp);
a0d0e21e
LW
1526 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1527 IoPAGE(io)++;
3280af22 1528 PL_formtarget = PL_toptarget;
748a9306 1529 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4 1530 fgv = IoTOP_GV(io);
636013b3 1531 assert(fgv); /* IoTOP_GV(io) should have been set above */
4633a7c4 1532 cv = GvFORM(fgv);
1df70142
AL
1533 if (!cv) {
1534 SV * const sv = sv_newmortal();
bd61b366 1535 gv_efullname4(sv, fgv, NULL, FALSE);
147e3846 1536 DIE(aTHX_ "Undefined top format \"%" SVf "\" called", SVfARG(sv));
4633a7c4 1537 }
43cd5cb7 1538 return doform(cv, gv, PL_op);
a0d0e21e
LW
1539 }
1540
1541 forget_top:
4ebe6e95 1542 cx = CX_CUR();
4df352a8
DM
1543 assert(CxTYPE(cx) == CXt_FORMAT);
1544 SP = PL_stack_base + cx->blk_oldsp; /* ignore retval of formline */
2f450c1b 1545 CX_LEAVE_SCOPE(cx);
6a7d52cc 1546 cx_popformat(cx);
ed8ff0f3 1547 cx_popblock(cx);
8f89e5a9 1548 retop = cx->blk_sub.retop;
5da525e9 1549 CX_POP(cx);
a0d0e21e 1550
b7effc98
DM
1551 EXTEND(SP, 1);
1552
617a4f41
DM
1553 if (is_return)
1554 /* XXX the semantics of doing 'return' in a format aren't documented.
1555 * Currently we ignore any args to 'return' and just return
1556 * a single undef in both scalar and list contexts
1557 */
1558 PUSHs(&PL_sv_undef);
1559 else if (!io || !(fp = IoOFP(io))) {
c782dc1d 1560 if (io && IoIFP(io))
7716c5c5 1561 report_wrongway_fh(gv, '<');
c521cf7c 1562 else
7716c5c5 1563 report_evil_fh(gv);
3280af22 1564 PUSHs(&PL_sv_no);
a0d0e21e
LW
1565 }
1566 else {
3280af22 1567 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
a2a5de95 1568 Perl_ck_warner(aTHX_ packWARN(WARN_IO), "page overflow");
a0d0e21e 1569 }
d75029d0 1570 if (!do_print(PL_formtarget, fp))
3280af22 1571 PUSHs(&PL_sv_no);
a0d0e21e 1572 else {
3280af22
NIS
1573 FmLINES(PL_formtarget) = 0;
1574 SvCUR_set(PL_formtarget, 0);
1575 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1576 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1577 (void)PerlIO_flush(fp);
3280af22 1578 PUSHs(&PL_sv_yes);
a0d0e21e
LW
1579 }
1580 }
3280af22 1581 PL_formtarget = PL_bodytarget;
8e4ecf23 1582 RETURNOP(retop);
a0d0e21e
LW
1583}
1584
1585PP(pp_prtf)
1586{
20b7effb 1587 dSP; dMARK; dORIGMARK;
760ac839 1588 PerlIO *fp;
a0d0e21e 1589
159b6efe
NC
1590 GV * const gv
1591 = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv;
9c9f25b8 1592 IO *const io = GvIO(gv);
46fc3d4c 1593
87385d72
FC
1594 /* Treat empty list as "" */
1595 if (MARK == SP) XPUSHs(&PL_sv_no);
1596
9c9f25b8 1597 if (io) {
a5e1d062 1598 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d
AL
1599 if (mg) {
1600 if (MARK == ORIGMARK) {
1601 MEXTEND(SP, 1);
1602 ++MARK;
1603 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1604 ++SP;
1605 }
3e0cb5de 1606 return Perl_tied_method(aTHX_ SV_CONST(PRINTF), mark - 1, MUTABLE_SV(io),
d682515d
NC
1607 mg,
1608 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1609 sp - mark);
a79db61d 1610 }
46fc3d4c
PP
1611 }
1612
9c9f25b8 1613 if (!io) {
51087808 1614 report_evil_fh(gv);
93189314 1615 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW
1616 goto just_say_no;
1617 }
1618 else if (!(fp = IoOFP(io))) {
7716c5c5
NC
1619 if (IoIFP(io))
1620 report_wrongway_fh(gv, '<');
1621 else if (ckWARN(WARN_CLOSED))
1622 report_evil_fh(gv);
93189314 1623 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
a0d0e21e
LW
1624 goto just_say_no;
1625 }
1626 else {
c7bd8b84 1627 SV *sv = sv_newmortal();
a0d0e21e
LW
1628 do_sprintf(sv, SP - MARK, MARK + 1);
1629 if (!do_print(sv, fp))
1630 goto just_say_no;
1631
1632 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1633 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW
1634 goto just_say_no;
1635 }
a0d0e21e 1636 SP = ORIGMARK;
3280af22 1637 PUSHs(&PL_sv_yes);
a0d0e21e
LW
1638 RETURN;
1639
1640 just_say_no:
a0d0e21e 1641 SP = ORIGMARK;
3280af22 1642 PUSHs(&PL_sv_undef);
a0d0e21e
LW
1643 RETURN;
1644}
1645
c07a80fd
PP
1646PP(pp_sysopen)
1647{
39644a26 1648 dSP;
de5e49e1 1649 const int perm = (MAXARG > 3 && (TOPs || POPs)) ? POPi : 0666;
1df70142 1650 const int mode = POPi;
1b6737cc 1651 SV * const sv = POPs;
159b6efe 1652 GV * const gv = MUTABLE_GV(POPs);
1b6737cc 1653 STRLEN len;
c07a80fd 1654
4592e6ca 1655 /* Need TIEHANDLE method ? */
1b6737cc 1656 const char * const tmps = SvPV_const(sv, len);
7e30e49f 1657 if (do_open_raw(gv, tmps, len, mode, perm, NULL)) {
c07a80fd 1658 IoLINES(GvIOp(gv)) = 0;
3280af22 1659 PUSHs(&PL_sv_yes);
c07a80fd
PP
1660 }
1661 else {
3280af22 1662 PUSHs(&PL_sv_undef);
c07a80fd
PP
1663 }
1664 RETURN;
1665}
1666
b1c05ba5
DM
1667
1668/* also used for: pp_read() and pp_recv() (where supported) */
1669
a0d0e21e
LW
1670PP(pp_sysread)
1671{
20b7effb 1672 dSP; dMARK; dORIGMARK; dTARGET;
0b423688 1673 SSize_t offset;
a0d0e21e
LW
1674 IO *io;
1675 char *buffer;
0b423688 1676 STRLEN orig_size;
5b54f415 1677 SSize_t length;
eb5c063a 1678 SSize_t count;
748a9306 1679 SV *bufsv;
a0d0e21e 1680 STRLEN blen;
eb5c063a 1681 int fp_utf8;
1dd30107
NC
1682 int buffer_utf8;
1683 SV *read_target;
eb5c063a
NIS
1684 Size_t got = 0;
1685 Size_t wanted;
1d636c13 1686 bool charstart = FALSE;
87330c3c
JH
1687 STRLEN charskip = 0;
1688 STRLEN skip = 0;
159b6efe 1689 GV * const gv = MUTABLE_GV(*++MARK);
375ed12a
JH
1690 int fd;
1691
5b468f54 1692 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1b6737cc 1693 && gv && (io = GvIO(gv)) )
137443ea 1694 {
a5e1d062 1695 const MAGIC *const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1b6737cc 1696 if (mg) {
3e0cb5de 1697 return Perl_tied_method(aTHX_ SV_CONST(READ), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC
1698 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1699 sp - mark);
1b6737cc 1700 }
2ae324a7
PP
1701 }
1702
a0d0e21e
LW
1703 if (!gv)
1704 goto say_undef;
748a9306 1705 bufsv = *++MARK;
ff68c719 1706 if (! SvOK(bufsv))
60e13354 1707 SvPVCLEAR(bufsv);
a0d0e21e 1708 length = SvIVx(*++MARK);
4bac9ae4
CS
1709 if (length < 0)
1710 DIE(aTHX_ "Negative length");
748a9306 1711 SETERRNO(0,0);
a0d0e21e
LW
1712 if (MARK < SP)
1713 offset = SvIVx(*++MARK);
1714 else
1715 offset = 0;
1716 io = GvIO(gv);
b5fe5ca2 1717 if (!io || !IoIFP(io)) {
51087808 1718 report_evil_fh(gv);
b5fe5ca2 1719 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1720 goto say_undef;
b5fe5ca2 1721 }
375ed12a
JH
1722
1723 /* Note that fd can here validly be -1, don't check it yet. */
1724 fd = PerlIO_fileno(IoIFP(io));
1725
0064a8a9 1726 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
fb10a8a7 1727 if (PL_op->op_type == OP_SYSREAD || PL_op->op_type == OP_RECV) {
1ed4b776
TC
1728 Perl_croak(aTHX_
1729 "%s() isn't allowed on :utf8 handles",
1730 OP_DESC(PL_op));
fb10a8a7 1731 }
7d59b7e4 1732 buffer = SvPVutf8_force(bufsv, blen);
1e54db1a 1733 /* UTF-8 may not have been set if they are all low bytes */
eb5c063a 1734 SvUTF8_on(bufsv);
9b9d7ce8 1735 buffer_utf8 = 0;
7d59b7e4
NIS
1736 }
1737 else {
1738 buffer = SvPV_force(bufsv, blen);
9edbb8b2 1739 buffer_utf8 = DO_UTF8(bufsv);
7d59b7e4 1740 }
4bac9ae4 1741 if (DO_UTF8(bufsv)) {
3f914778 1742 blen = sv_len_utf8_nomg(bufsv);
4bac9ae4 1743 }
7d59b7e4 1744
d0965105
JH
1745 charstart = TRUE;
1746 charskip = 0;
87330c3c 1747 skip = 0;
4bac9ae4 1748 wanted = length;
d0965105 1749
a0d0e21e 1750#ifdef HAS_SOCKET
533c011a 1751 if (PL_op->op_type == OP_RECV) {
0b423688 1752 Sock_size_t bufsize;
46fc3d4c 1753 char namebuf[MAXPATHLEN];
375ed12a
JH
1754 if (fd < 0) {
1755 SETERRNO(EBADF,SS_IVCHAN);
78e69e60 1756 goto say_undef;
375ed12a 1757 }
b5afd346 1758#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
490ab354
JH
1759 bufsize = sizeof (struct sockaddr_in);
1760#else
46fc3d4c 1761 bufsize = sizeof namebuf;
490ab354 1762#endif
abf95952
IZ
1763#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1764 if (bufsize >= 256)
1765 bufsize = 255;
1766#endif
eb160463 1767 buffer = SvGROW(bufsv, (STRLEN)(length+1));
bbce6d69 1768 /* 'offset' means 'flags' here */
375ed12a 1769 count = PerlSock_recvfrom(fd, buffer, length, offset,
10edeb5d 1770 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1771 if (count < 0)
78e69e60 1772 goto say_undef;
8eb023a9
DM
1773 /* MSG_TRUNC can give oversized count; quietly lose it */
1774 if (count > length)
1775 count = length;
eb5c063a 1776 SvCUR_set(bufsv, count);
748a9306
LW
1777 *SvEND(bufsv) = '\0';
1778 (void)SvPOK_only(bufsv);
eb5c063a
NIS
1779 if (fp_utf8)
1780 SvUTF8_on(bufsv);
748a9306 1781 SvSETMAGIC(bufsv);
aac0dd9a 1782 /* This should not be marked tainted if the fp is marked clean */
bbce6d69
PP
1783 if (!(IoFLAGS(io) & IOf_UNTAINT))
1784 SvTAINTED_on(bufsv);
a0d0e21e 1785 SP = ORIGMARK;
e122534c
TC
1786#if defined(__CYGWIN__)
1787 /* recvfrom() on cygwin doesn't set bufsize at all for
1788 connected sockets, leaving us with trash in the returned
1789 name, so use the same test as the Win32 code to check if it
1790 wasn't set, and set it [perl #118843] */
1791 if (bufsize == sizeof namebuf)
1792 bufsize = 0;
1793#endif
46fc3d4c 1794 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW
1795 PUSHs(TARG);
1796 RETURN;
1797 }
a0d0e21e 1798#endif
bbce6d69 1799 if (offset < 0) {
0b423688 1800 if (-offset > (SSize_t)blen)
cea2e8a9 1801 DIE(aTHX_ "Offset outside string");
bbce6d69
PP
1802 offset += blen;
1803 }
eb5c063a
NIS
1804 if (DO_UTF8(bufsv)) {
1805 /* convert offset-as-chars to offset-as-bytes */
d5f981bb 1806 if (offset >= (SSize_t)blen)
6960c29a
CH
1807 offset += SvCUR(bufsv) - blen;
1808 else
1809 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
eb5c063a 1810 }
375ed12a 1811
eb5c063a 1812 more_bytes:
375ed12a
JH
1813 /* Reestablish the fd in case it shifted from underneath us. */
1814 fd = PerlIO_fileno(IoIFP(io));
1815
0b423688 1816 orig_size = SvCUR(bufsv);
1dd30107
NC
1817 /* Allocating length + offset + 1 isn't perfect in the case of reading
1818 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1819 unduly.
1820 (should be 2 * length + offset + 1, or possibly something longer if
47e13f24 1821 IN_ENCODING Is true) */
eb160463 1822 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
0b423688
TC
1823 if (offset > 0 && offset > (SSize_t)orig_size) { /* Zero any newly allocated space */
1824 Zero(buffer+orig_size, offset-orig_size, char);
cd52b7b2 1825 }
eb5c063a 1826 buffer = buffer + offset;
1dd30107
NC
1827 if (!buffer_utf8) {
1828 read_target = bufsv;
1829 } else {
1830 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1831 concatenate it to the current buffer. */
1832
1833 /* Truncate the existing buffer to the start of where we will be
1834 reading to: */
1835 SvCUR_set(bufsv, offset);
1836
1837 read_target = sv_newmortal();
862a34c6 1838 SvUPGRADE(read_target, SVt_PV);
fe2774ed 1839 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1dd30107 1840 }
eb5c063a 1841
533c011a 1842 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1843#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1844 if (IoTYPE(io) == IoTYPE_SOCKET) {
375ed12a
JH
1845 if (fd < 0) {
1846 SETERRNO(EBADF,SS_IVCHAN);
1847 count = -1;
1848 }
1849 else
1850 count = PerlSock_recv(fd, buffer, length, 0);
a7092146
GS
1851 }
1852 else
1853#endif
1854 {
375ed12a
JH
1855 if (fd < 0) {
1856 SETERRNO(EBADF,RMS_IFI);
1857 count = -1;
1858 }
1859 else
1860 count = PerlLIO_read(fd, buffer, length);
a7092146 1861 }
a0d0e21e
LW
1862 }
1863 else
3b02c43c 1864 {
eb5c063a
NIS
1865 count = PerlIO_read(IoIFP(io), buffer, length);
1866 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1867 if (count == 0 && PerlIO_error(IoIFP(io)))
1868 count = -1;
3b02c43c 1869 }
eb5c063a 1870 if (count < 0) {
7716c5c5 1871 if (IoTYPE(io) == IoTYPE_WRONLY)
a5390457 1872 report_wrongway_fh(gv, '>');
a0d0e21e 1873 goto say_undef;
af8c498a 1874 }
aa07b2f6 1875 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1dd30107
NC
1876 *SvEND(read_target) = '\0';
1877 (void)SvPOK_only(read_target);
0064a8a9 1878 if (fp_utf8 && !IN_BYTES) {
eb5c063a 1879 /* Look at utf8 we got back and count the characters */
1df70142 1880 const char *bend = buffer + count;
eb5c063a 1881 while (buffer < bend) {
d0965105
JH
1882 if (charstart) {
1883 skip = UTF8SKIP(buffer);
1884 charskip = 0;
1885 }
1886 if (buffer - charskip + skip > bend) {
eb5c063a
NIS
1887 /* partial character - try for rest of it */
1888 length = skip - (bend-buffer);
aa07b2f6 1889 offset = bend - SvPVX_const(bufsv);
d0965105
JH
1890 charstart = FALSE;
1891 charskip += count;
eb5c063a
NIS
1892 goto more_bytes;
1893 }
1894 else {
1895 got++;
1896 buffer += skip;
d0965105
JH
1897 charstart = TRUE;
1898 charskip = 0;
eb5c063a
NIS
1899 }
1900 }
1901 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1902 provided amount read (count) was what was requested (length)
1903 */
1904 if (got < wanted && count == length) {
d0965105 1905 length = wanted - got;
aa07b2f6 1906 offset = bend - SvPVX_const(bufsv);
eb5c063a
NIS
1907 goto more_bytes;
1908 }
1909 /* return value is character count */
1910 count = got;
1911 SvUTF8_on(bufsv);
1912 }
1dd30107
NC
1913 else if (buffer_utf8) {
1914 /* Let svcatsv upgrade the bytes we read in to utf8.
1915 The buffer is a mortal so will be freed soon. */
1916 sv_catsv_nomg(bufsv, read_target);
1917 }
748a9306 1918 SvSETMAGIC(bufsv);
aac0dd9a 1919 /* This should not be marked tainted if the fp is marked clean */
bbce6d69
PP
1920 if (!(IoFLAGS(io) & IOf_UNTAINT))
1921 SvTAINTED_on(bufsv);
a0d0e21e 1922 SP = ORIGMARK;
eb5c063a 1923 PUSHi(count);
a0d0e21e
LW
1924 RETURN;
1925
1926 say_undef:
1927 SP = ORIGMARK;
1928 RETPUSHUNDEF;
1929}
1930
b1c05ba5
DM
1931
1932/* also used for: pp_send() where defined */
1933
60504e18 1934PP(pp_syswrite)
a0d0e21e 1935{
20b7effb 1936 dSP; dMARK; dORIGMARK; dTARGET;
748a9306 1937 SV *bufsv;
83003860 1938 const char *buffer;
8c99d73e 1939 SSize_t retval;
a0d0e21e 1940 STRLEN blen;
64a1bc8e 1941 const int op_type = PL_op->op_type;
c9cb0f41
NC
1942 bool doing_utf8;
1943 U8 *tmpbuf = NULL;
159b6efe 1944 GV *const gv = MUTABLE_GV(*++MARK);
91472ad4 1945 IO *const io = GvIO(gv);
375ed12a 1946 int fd;
91472ad4
NC
1947
1948 if (op_type == OP_SYSWRITE && io) {
a5e1d062 1949 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1950 if (mg) {
a79db61d 1951 if (MARK == SP - 1) {
c8834ab7
TC
1952 SV *sv = *SP;
1953 mXPUSHi(sv_len(sv));
a79db61d
AL
1954 PUTBACK;
1955 }
1956
3e0cb5de 1957 return Perl_tied_method(aTHX_ SV_CONST(WRITE), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC
1958 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1959 sp - mark);
64a1bc8e 1960 }
1d603a67 1961 }
a0d0e21e
LW
1962 if (!gv)
1963 goto say_undef;
64a1bc8e 1964
748a9306 1965 bufsv = *++MARK;
64a1bc8e 1966
748a9306 1967 SETERRNO(0,0);
cf167416 1968 if (!io || !IoIFP(io) || IoTYPE(io) == IoTYPE_RDONLY) {
8c99d73e 1969 retval = -1;
51087808
NC
1970 if (io && IoIFP(io))
1971 report_wrongway_fh(gv, '<');
1972 else
1973 report_evil_fh(gv);
b5fe5ca2 1974 SETERRNO(EBADF,RMS_IFI);
7d59b7e4
NIS
1975 goto say_undef;
1976 }
375ed12a
JH
1977 fd = PerlIO_fileno(IoIFP(io));
1978 if (fd < 0) {
1979 SETERRNO(EBADF,SS_IVCHAN);
1980 retval = -1;
1981 goto say_undef;
1982 }
7d59b7e4 1983
c9cb0f41
NC
1984 /* Do this first to trigger any overloading. */
1985 buffer = SvPV_const(bufsv, blen);
c9cb0f41
NC
1986 doing_utf8 = DO_UTF8(bufsv);
1987
7d59b7e4 1988 if (PerlIO_isutf8(IoIFP(io))) {
1ed4b776
TC
1989 Perl_croak(aTHX_
1990 "%s() isn't allowed on :utf8 handles",
1991 OP_DESC(PL_op));
a0d0e21e 1992 }
c9cb0f41
NC
1993 else if (doing_utf8) {
1994 STRLEN tmplen = blen;
a79db61d 1995 U8 * const result = bytes_from_utf8((const U8*) buffer, &tmplen, &doing_utf8);
c9cb0f41
NC
1996 if (!doing_utf8) {
1997 tmpbuf = result;
1998 buffer = (char *) tmpbuf;
1999 blen = tmplen;
2000 }
2001 else {
2002 assert((char *)result == buffer);
2003 Perl_croak(aTHX_ "Wide character in %s", OP_DESC(PL_op));
2004 }
7d59b7e4
NIS
2005 }
2006
e2712234 2007#ifdef HAS_SOCKET
7627e6d0 2008 if (op_type == OP_SEND) {
e2712234
NC
2009 const int flags = SvIVx(*++MARK);
2010 if (SP > MARK) {
2011 STRLEN mlen;
2012 char * const sockbuf = SvPVx(*++MARK, mlen);
375ed12a 2013 retval = PerlSock_sendto(fd, buffer, blen,
e2712234
NC
2014 flags, (struct sockaddr *)sockbuf, mlen);
2015 }
2016 else {
375ed12a 2017 retval = PerlSock_send(fd, buffer, blen, flags);
e2712234 2018 }
7627e6d0
NC
2019 }
2020 else
e2712234 2021#endif
7627e6d0 2022 {
c9cb0f41 2023 Size_t length = 0; /* This length is in characters. */
7d59b7e4 2024 IV offset;
c9cb0f41 2025
c9cb0f41 2026 if (MARK >= SP) {
1ed4b776 2027 length = blen;
c9cb0f41
NC
2028 } else {
2029#if Size_t_size > IVSIZE
2030 length = (Size_t)SvNVx(*++MARK);
2031#else
2032 length = (Size_t)SvIVx(*++MARK);
2033#endif
4b0c4b6f
NC
2034 if ((SSize_t)length < 0) {
2035 Safefree(tmpbuf);
c9cb0f41 2036 DIE(aTHX_ "Negative length");
4b0c4b6f 2037 }
7d59b7e4 2038 }
c9cb0f41 2039
bbce6d69 2040 if (MARK < SP) {
a0d0e21e 2041 offset = SvIVx(*++MARK);
bbce6d69 2042 if (offset < 0) {
1ed4b776 2043 if (-offset > (IV)blen) {
4b0c4b6f 2044 Safefree(tmpbuf);
cea2e8a9 2045 DIE(aTHX_ "Offset outside string");
4b0c4b6f 2046 }
1ed4b776
TC
2047 offset += blen;
2048 } else if (offset > (IV)blen) {
4b0c4b6f 2049 Safefree(tmpbuf);
cea2e8a9 2050 DIE(aTHX_ "Offset outside string");
4b0c4b6f 2051 }
bbce6d69 2052 } else
a0d0e21e 2053 offset = 0;
1ed4b776
TC
2054 if (length > blen - offset)
2055 length = blen - offset;
2056 buffer = buffer+offset;
2057
a7092146 2058#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 2059 if (IoTYPE(io) == IoTYPE_SOCKET) {
375ed12a 2060 retval = PerlSock_send(fd, buffer, length, 0);
a7092146
GS
2061 }
2062 else
2063#endif
2064 {
94e4c244 2065 /* See the note at doio.c:do_print about filesize limits. --jhi */
375ed12a 2066 retval = PerlLIO_write(fd, buffer, length);
a7092146 2067 }
a0d0e21e 2068 }
c9cb0f41 2069
8c99d73e 2070 if (retval < 0)
a0d0e21e
LW
2071 goto say_undef;
2072 SP = ORIGMARK;
4b0c4b6f 2073
a79db61d 2074 Safefree(tmpbuf);
8c99d73e
GS
2075#if Size_t_size > IVSIZE
2076 PUSHn(retval);
2077#else
2078 PUSHi(retval);
2079#endif
a0d0e21e
LW
2080 RETURN;
2081
2082 say_undef:
a79db61d 2083 Safefree(tmpbuf);
a0d0e21e
LW
2084 SP = ORIGMARK;
2085 RETPUSHUNDEF;
2086}
2087
a0d0e21e
LW
2088PP(pp_eof)
2089{
20b7effb 2090 dSP;
a0d0e21e 2091 GV *gv;
32e65323 2092 IO *io;
a5e1d062 2093 const MAGIC *mg;
bc0c81ca
NC
2094 /*
2095 * in Perl 5.12 and later, the additional parameter is a bitmask:
2096 * 0 = eof
2097 * 1 = eof(FH)
2098 * 2 = eof() <- ARGV magic
2099 *
2100 * I'll rely on the compiler's trace flow analysis to decide whether to
2101 * actually assign this out here, or punt it into the only block where it is
2102 * used. Doing it out here is DRY on the condition logic.
2103 */
2104 unsigned int which;
a0d0e21e 2105
bc0c81ca 2106 if (MAXARG) {
32e65323 2107 gv = PL_last_in_gv = MUTABLE_GV(POPs); /* eof(FH) */
bc0c81ca
NC
2108 which = 1;
2109 }
b5f55170
NC
2110 else {
2111 EXTEND(SP, 1);
2112
bc0c81ca 2113 if (PL_op->op_flags & OPf_SPECIAL) {
b5f55170 2114 gv = PL_last_in_gv = GvEGVx(PL_argvgv); /* eof() - ARGV magic */
bc0c81ca
NC
2115 which = 2;
2116 }
2117 else {
b5f55170 2118 gv = PL_last_in_gv; /* eof */
bc0c81ca
NC
2119 which = 0;
2120 }
b5f55170 2121 }
32e65323
CS
2122
2123 if (!gv)
eb699a9c 2124 RETPUSHYES;
32e65323
CS
2125
2126 if ((io = GvIO(gv)) && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) {
3e0cb5de 2127 return tied_method1(SV_CONST(EOF), SP, MUTABLE_SV(io), mg, newSVuv(which));
146174a9 2128 }
4592e6ca 2129
32e65323
CS
2130 if (!MAXARG && (PL_op->op_flags & OPf_SPECIAL)) { /* eof() */
2131 if (io && !IoIFP(io)) {
b9f2b683 2132 if ((IoFLAGS(io) & IOf_START) && av_tindex(GvAVn(gv)) < 0) {
1037353b 2133 SV ** svp;
32e65323
CS
2134 IoLINES(io) = 0;
2135 IoFLAGS(io) &= ~IOf_START;
d5eb9a46 2136 do_open6(gv, "-", 1, NULL, NULL, 0);
1037353b
DD
2137 svp = &GvSV(gv);
2138 if (*svp) {
2139 SV * sv = *svp;
2140 sv_setpvs(sv, "-");
2141 SvSETMAGIC(sv);
2142 }
32e65323 2143 else
1037353b 2144 *svp = newSVpvs("-");
32e65323 2145 }
157fb5a1 2146 else if (!nextargv(gv, FALSE))
32e65323 2147 RETPUSHYES;
6136c704 2148 }
4592e6ca
NIS
2149 }
2150
32e65323 2151 PUSHs(boolSV(do_eof(gv)));
a0d0e21e
LW
2152 RETURN;
2153}
2154
2155PP(pp_tell)
2156{
20b7effb 2157 dSP; dTARGET;
301e8125 2158 GV *gv;
5b468f54 2159 IO *io;
a0d0e21e 2160
b64a1294 2161 if (MAXARG != 0 && (TOPs || POPs))
159b6efe 2162 PL_last_in_gv = MUTABLE_GV(POPs);
ac3697cd
NC
2163 else
2164 EXTEND(SP, 1);
c4420975 2165 gv = PL_last_in_gv;
4592e6ca 2166
9c9f25b8
NC
2167 io = GvIO(gv);
2168 if (io) {
a5e1d062 2169 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2170 if (mg) {
3e0cb5de 2171 return tied_method0(SV_CONST(TELL), SP, MUTABLE_SV(io), mg);
a79db61d 2172 }
4592e6ca 2173 }
f4817f32 2174 else if (!gv) {
f03173f2
RGS
2175 if (!errno)
2176 SETERRNO(EBADF,RMS_IFI);
2177 PUSHi(-1);
2178 RETURN;
2179 }
4592e6ca 2180
146174a9 2181#if LSEEKSIZE > IVSIZE
9e831ddf 2182 PUSHn( (NV)do_tell(gv) );
146174a9 2183#else
9e831ddf 2184 PUSHi( (IV)do_tell(gv) );
146174a9 2185#endif
a0d0e21e
LW
2186 RETURN;
2187}
2188
b1c05ba5
DM
2189
2190/* also used for: pp_seek() */
2191
137443ea
PP
2192PP(pp_sysseek)
2193{
20b7effb 2194 dSP;
1df70142 2195 const int whence = POPi;
146174a9 2196#if LSEEKSIZE > IVSIZE
7452cf6a 2197 const Off_t offset = (Off_t)SvNVx(POPs);
146174a9 2198#else
7452cf6a 2199 const Off_t offset = (Off_t)SvIVx(POPs);
146174a9 2200#endif
a0d0e21e 2201
159b6efe 2202 GV * const gv = PL_last_in_gv = MUTABLE_GV(POPs);
9c9f25b8 2203 IO *const io = GvIO(gv);
4592e6ca 2204
9c9f25b8 2205 if (io) {
a5e1d062 2206 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2207 if (mg) {
cb50131a 2208#if LSEEKSIZE > IVSIZE
74f0b550 2209 SV *const offset_sv = newSVnv((NV) offset);
cb50131a 2210#else
74f0b550 2211 SV *const offset_sv = newSViv(offset);
cb50131a 2212#endif
bc0c81ca 2213
3e0cb5de 2214 return tied_method2(SV_CONST(SEEK), SP, MUTABLE_SV(io), mg, offset_sv,
d682515d 2215 newSViv(whence));
a79db61d 2216 }
4592e6ca
NIS
2217 }
2218
533c011a 2219 if (PL_op->op_type == OP_SEEK)
8903cb82
PP
2220 PUSHs(boolSV(do_seek(gv, offset, whence)));
2221 else {
0bcc34c2 2222 const Off_t sought = do_sysseek(gv, offset, whence);
b448e4fe 2223 if (sought < 0)
146174a9
CB
2224 PUSHs(&PL_sv_undef);
2225 else {
7452cf6a 2226 SV* const sv = sought ?
146174a9 2227#if LSEEKSIZE > IVSIZE
b448e4fe 2228 newSVnv((NV)sought)
146174a9 2229#else
b448e4fe 2230 newSViv(sought)
146174a9
CB
2231#endif
2232 : newSVpvn(zero_but_true, ZBTLEN);
6e449a3a 2233 mPUSHs(sv);
146174a9 2234 }
8903cb82 2235 }
a0d0e21e
LW
2236 RETURN;
2237}
2238
2239PP(pp_truncate)
2240{
39644a26 2241 dSP;
8c99d73e
GS
2242 /* There seems to be no consensus on the length type of truncate()
2243 * and ftruncate(), both off_t and size_t have supporters. In
2244 * general one would think that when using large files, off_t is
2245 * at least as wide as size_t, so using an off_t should be okay. */
2246 /* XXX Configure probe for the length type of *truncate() needed XXX */
0bcc34c2 2247 Off_t len;
a0d0e21e 2248
25342a55 2249#if Off_t_size > IVSIZE
0bcc34c2 2250 len = (Off_t)POPn;
8c99d73e 2251#else
0bcc34c2 2252 len = (Off_t)POPi;
8c99d73e
GS
2253#endif
2254 /* Checking for length < 0 is problematic as the type might or
301e8125 2255 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 2256 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2257 SETERRNO(0,0);
d05c1ba0 2258 {
5e0adc2d 2259 SV * const sv = POPs;
d05c1ba0
JH
2260 int result = 1;
2261 GV *tmpgv;
090bf15b
SR
2262 IO *io;
2263
42409c40
FC
2264 if (PL_op->op_flags & OPf_SPECIAL
2265 ? (tmpgv = gv_fetchsv(sv, 0, SVt_PVIO), 1)
2266 : !!(tmpgv = MAYBE_DEREF_GV(sv)) ) {
9c9f25b8
NC
2267 io = GvIO(tmpgv);
2268 if (!io)
090bf15b 2269 result = 0;
d05c1ba0 2270 else {
090bf15b 2271 PerlIO *fp;
090bf15b
SR
2272 do_ftruncate_io:
2273 TAINT_PROPER("truncate");
2274 if (!(fp = IoIFP(io))) {
2275 result = 0;
2276 }
2277 else {
375ed12a
JH
2278 int fd = PerlIO_fileno(fp);
2279 if (fd < 0) {
2280 SETERRNO(EBADF,RMS_IFI);
2281 result = 0;
2282 } else {
a9f17b43
JH
2283 if (len < 0) {
2284 SETERRNO(EINVAL, LIB_INVARG);
2285 result = 0;
2286 } else {
2287 PerlIO_flush(fp);
cbdc8872 2288#ifdef HAS_TRUNCATE
a9f17b43 2289 if (ftruncate(fd, len) < 0)
301e8125 2290#else
a9f17b43 2291 if (my_chsize(fd, len) < 0)
cbdc8872 2292#endif
a9f17b43
JH
2293 result = 0;
2294 }
375ed12a 2295 }
090bf15b 2296 }
d05c1ba0 2297 }
cbdc8872 2298 }
5e0adc2d 2299 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2300 io = MUTABLE_IO(SvRV(sv)); /* *main::FRED{IO} for example */
090bf15b 2301 goto do_ftruncate_io;
5e0adc2d
FC
2302 }
2303 else {
2304 const char * const name = SvPV_nomg_const_nolen(sv);
d05c1ba0 2305 TAINT_PROPER("truncate");
cbdc8872 2306#ifdef HAS_TRUNCATE
d05c1ba0
JH
2307 if (truncate(name, len) < 0)
2308 result = 0;
cbdc8872 2309#else
d05c1ba0 2310 {
d484df69
TC
2311 int mode = O_RDWR;
2312 int tmpfd;
2313
2314#if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE)
2315 mode |= O_LARGEFILE; /* Transparently largefiley. */
2316#endif
2317#ifdef O_BINARY
2318 /* On open(), the Win32 CRT tries to seek around text
2319 * files using 32-bit offsets, which causes the open()
2320 * to fail on large files, so open in binary mode.
2321 */
2322 mode |= O_BINARY;
2323#endif
74df577f 2324 tmpfd = PerlLIO_open_cloexec(name, mode);
d05c1ba0 2325
375ed12a 2326 if (tmpfd < 0) {
cbdc8872 2327 result = 0;
375ed12a 2328 } else {
d05c1ba0
JH
2329 if (my_chsize(tmpfd, len) < 0)
2330 result = 0;
2331 PerlLIO_close(tmpfd);
2332 }
cbdc8872 2333 }
a0d0e21e 2334#endif
d05c1ba0 2335 }
a0d0e21e 2336
d05c1ba0
JH
2337 if (result)
2338 RETPUSHYES;
2339 if (!errno)
93189314 2340 SETERRNO(EBADF,RMS_IFI);
d05c1ba0
JH
2341 RETPUSHUNDEF;
2342 }
a0d0e21e
LW
2343}
2344
b1c05ba5
DM
2345
2346/* also used for: pp_fcntl() */
2347
a0d0e21e
LW
2348PP(pp_ioctl)
2349{
20b7effb 2350 dSP; dTARGET;
7452cf6a 2351 SV * const argsv = POPs;
1df70142 2352 const unsigned int func = POPu;
49225470 2353 int optype;
159b6efe 2354 GV * const gv = MUTABLE_GV(POPs);
8a6c0fcb 2355 IO * const io = GvIOn(gv);
a0d0e21e 2356 char *s;
324aa91a 2357 IV retval;
a0d0e21e 2358
8a6c0fcb 2359 if (!IoIFP(io)) {
51087808 2360 report_evil_fh(gv);
93189314 2361 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
a0d0e21e
LW
2362 RETPUSHUNDEF;
2363 }
2364
748a9306 2365 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2366 STRLEN len;
324aa91a 2367 STRLEN need;
748a9306 2368 s = SvPV_force(argsv, len);
324aa91a
HF
2369 need = IOCPARM_LEN(func);
2370 if (len < need) {
2371 s = Sv_Grow(argsv, need + 1);
2372 SvCUR_set(argsv, need);
a0d0e21e
LW
2373 }
2374
748a9306 2375 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW
2376 }
2377 else {
748a9306 2378 retval = SvIV(argsv);
c529f79d 2379 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW
2380 }
2381
49225470 2382 optype = PL_op->op_type;
ed4b2e6b 2383 TAINT_PROPER(PL_op_desc[optype]);
a0d0e21e
LW
2384
2385 if (optype == OP_IOCTL)
2386#ifdef HAS_IOCTL
76e3520e 2387 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2388#else
cea2e8a9 2389 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW
2390#endif
2391 else
c214f4ad
B
2392#ifndef HAS_FCNTL
2393 DIE(aTHX_ "fcntl is not implemented");
8d698507 2394#elif defined(OS2) && defined(__EMX__)
760ac839 2395 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2396#else
760ac839 2397 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2398#endif
a0d0e21e 2399
6652bd42 2400#if defined(HAS_IOCTL) || defined(HAS_FCNTL)
748a9306
LW
2401 if (SvPOK(argsv)) {
2402 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2403 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
53e06cf0 2404 OP_NAME(PL_op));
748a9306
LW
2405 s[SvCUR(argsv)] = 0; /* put our null back */
2406 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW
2407 }
2408
2409 if (retval == -1)
2410 RETPUSHUNDEF;
2411 if (retval != 0) {
2412 PUSHi(retval);
2413 }
2414 else {
8903cb82 2415 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e 2416 }
4808266b 2417#endif
c214f4ad 2418 RETURN;
a0d0e21e
LW
2419}
2420
2421PP(pp_flock)
2422{
9cad6237 2423#ifdef FLOCK
20b7effb 2424 dSP; dTARGET;
a0d0e21e 2425 I32 value;
7452cf6a 2426 const int argtype = POPi;
1f28cbca 2427 GV * const gv = MUTABLE_GV(POPs);
9c9f25b8
NC
2428 IO *const io = GvIO(gv);
2429 PerlIO *const fp = io ? IoIFP(io) : NULL;
16d20bd9 2430
0bcc34c2 2431 /* XXX Looks to me like io is always NULL at this point */
a0d0e21e 2432 if (fp) {
68dc0745 2433 (void)PerlIO_flush(fp);
76e3520e 2434 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2435 }
cb50131a 2436 else {
51087808 2437 report_evil_fh(gv);
a0d0e21e 2438 value = 0;
93189314 2439 SETERRNO(EBADF,RMS_IFI);
cb50131a 2440 }
a0d0e21e
LW
2441 PUSHi(value);
2442 RETURN;
2443#else
56a94ef2 2444 DIE(aTHX_ PL_no_func, "flock");
a0d0e21e
LW
2445#endif
2446}
2447
2448/* Sockets. */
2449
7627e6d0
NC
2450#ifdef HAS_SOCKET
2451
a0d0e21e
LW
2452PP(pp_socket)
2453{
20b7effb 2454 dSP;
7452cf6a
AL
2455 const int protocol = POPi;
2456 const int type = POPi;
2457 const int domain = POPi;
159b6efe 2458 GV * const gv = MUTABLE_GV(POPs);
5805b585 2459 IO * const io = GvIOn(gv);
a0d0e21e
LW
2460 int fd;
2461
57171420
BS
2462 if (IoIFP(io))
2463 do_close(gv, FALSE);
2464
a0d0e21e 2465 TAINT_PROPER("socket");
74df577f 2466 fd = PerlSock_socket_cloexec(domain, type, protocol);
375ed12a 2467 if (fd < 0) {
a0d0e21e 2468 RETPUSHUNDEF;
375ed12a 2469 }
147e3846
KW
2470 IoIFP(io) = PerlIO_fdopen(fd, "r" SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2471 IoOFP(io) = PerlIO_fdopen(fd, "w" SOCKET_OPEN_MODE);
50952442 2472 IoTYPE(io) = IoTYPE_SOCKET;
a0d0e21e 2473 if (!IoIFP(io) || !IoOFP(io)) {
760ac839
LW
2474 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2475 if (IoOFP(io)) PerlIO_close(IoOFP(io));
6ad3d225 2476 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
a0d0e21e
LW
2477 RETPUSHUNDEF;
2478 }
2479
2480 RETPUSHYES;
a0d0e21e 2481}
7627e6d0 2482#endif
a0d0e21e
LW
2483
2484PP(pp_sockpair)
2485{
c95c94b1 2486#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
20b7effb 2487 dSP;
e0b7b5e2 2488 int fd[2];
7452cf6a
AL
2489 const int protocol = POPi;
2490 const int type = POPi;
2491 const int domain = POPi;
e0b7b5e2 2492
159b6efe 2493 GV * const gv2 = MUTABLE_GV(POPs);
49561e08
FC
2494 IO * const io2 = GvIOn(gv2);
2495 GV * const gv1 = MUTABLE_GV(POPs);
2496 IO * const io1 = GvIOn(gv1);
a0d0e21e 2497
49561e08 2498 if (IoIFP(io1))
dc0d0a5f 2499 do_close(gv1, FALSE);
49561e08 2500 if (IoIFP(io2))
dc0d0a5f 2501 do_close(gv2, FALSE);
57171420 2502
a0d0e21e 2503 TAINT_PROPER("socketpair");
74df577f 2504 if (PerlSock_socketpair_cloexec(domain, type, protocol, fd) < 0)
a0d0e21e 2505 RETPUSHUNDEF;
147e3846
KW
2506 IoIFP(io1) = PerlIO_fdopen(fd[0], "r" SOCKET_OPEN_MODE);
2507 IoOFP(io1) = PerlIO_fdopen(fd[0], "w" SOCKET_OPEN_MODE);
50952442 2508 IoTYPE(io1) = IoTYPE_SOCKET;
147e3846
KW
2509 IoIFP(io2) = PerlIO_fdopen(fd[1], "r" SOCKET_OPEN_MODE);
2510 IoOFP(io2) = PerlIO_fdopen(fd[1], "w" SOCKET_OPEN_MODE);
50952442 2511 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2512 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW
2513 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2514 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2515 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW
2516 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2517 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2518 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW
2519 RETPUSHUNDEF;
2520 }
2521
2522 RETPUSHYES;
2523#else
cea2e8a9 2524 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW
2525#endif
2526}
2527
7627e6d0
NC
2528#ifdef HAS_SOCKET
2529
b1c05ba5
DM
2530/* also used for: pp_connect() */
2531
a0d0e21e
LW
2532PP(pp_bind)
2533{
20b7effb 2534 dSP;
7452cf6a 2535 SV * const addrsv = POPs;
349d4f2f
NC
2536 /* OK, so on what platform does bind modify addr? */
2537 const char *addr;
159b6efe 2538 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2539 IO * const io = GvIOn(gv);
a0d0e21e 2540 STRLEN len;
e0b7b5e2 2541 int op_type;
375ed12a 2542 int fd;
a0d0e21e 2543
8a6c0fcb 2544 if (!IoIFP(io))
a0d0e21e 2545 goto nuts;
375ed12a
JH
2546 fd = PerlIO_fileno(IoIFP(io));
2547 if (fd < 0)
2548 goto nuts;
a0d0e21e 2549
349d4f2f 2550 addr = SvPV_const(addrsv, len);
e0b7b5e2 2551 op_type = PL_op->op_type;
32b81f04
NC
2552 TAINT_PROPER(PL_op_desc[op_type]);
2553 if ((op_type == OP_BIND
375ed12a
JH
2554 ? PerlSock_bind(fd, (struct sockaddr *)addr, len)
2555 : PerlSock_connect(fd, (struct sockaddr *)addr, len))
32b81f04 2556 >= 0)
a0d0e21e
LW
2557 RETPUSHYES;
2558 else
2559 RETPUSHUNDEF;
2560
7b52d656 2561 nuts:
fbcda526 2562 report_evil_fh(gv);
93189314 2563 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2564 RETPUSHUNDEF;
a0d0e21e
LW
2565}
2566
2567PP(pp_listen)
2568{
20b7effb 2569 dSP;
7452cf6a 2570 const int backlog = POPi;
159b6efe 2571 GV * const gv = MUTABLE_GV(POPs);
8a6c0fcb 2572 IO * const io = GvIOn(gv);
a0d0e21e 2573
8a6c0fcb 2574 if (!IoIFP(io))
a0d0e21e
LW
2575 goto nuts;
2576
6ad3d225 2577 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW
2578 RETPUSHYES;
2579 else
2580 RETPUSHUNDEF;
2581
7b52d656 2582 nuts:
fbcda526 2583 report_evil_fh(gv);
93189314 2584 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2585 RETPUSHUNDEF;
a0d0e21e
LW
2586}
2587
2588PP(pp_accept)
2589{
20b7effb 2590 dSP; dTARGET;
eb578fdb 2591 IO *nstio;
93d47a36 2592 char namebuf[MAXPATHLEN];
b5afd346 2593#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
93d47a36
JH
2594 Sock_size_t len = sizeof (struct sockaddr_in);
2595#else
2596 Sock_size_t len = sizeof namebuf;
2597#endif
159b6efe
NC
2598 GV * const ggv = MUTABLE_GV(POPs);
2599 GV * const ngv = MUTABLE_GV(POPs);
a0d0e21e
LW
2600 int fd;
2601
8a6c0fcb 2602 IO * const gstio = GvIO(ggv);
a0d0e21e
LW
2603 if (!gstio || !IoIFP(gstio))
2604 goto nuts;
2605
2606 nstio = GvIOn(ngv);
74df577f 2607 fd = PerlSock_accept_cloexec(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
e294cc5d
JH
2608#if defined(OEMVS)
2609 if (len == 0) {
2610 /* Some platforms indicate zero length when an AF_UNIX client is
2611 * not bound. Simulate a non-zero-length sockaddr structure in
2612 * this case. */
2613 namebuf[0] = 0; /* sun_len */
2614 namebuf[1] = AF_UNIX; /* sun_family */
2615 len = 2;
2616 }
2617#endif
2618
a0d0e21e
LW
2619 if (fd < 0)
2620 goto badexit;
a70048fb
AB
2621 if (IoIFP(nstio))
2622 do_close(ngv, FALSE);
147e3846
KW
2623 IoIFP(nstio) = PerlIO_fdopen(fd, "r" SOCKET_OPEN_MODE);
2624 IoOFP(nstio) = PerlIO_fdopen(fd, "w" SOCKET_OPEN_MODE);
50952442 2625 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2626 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW
2627 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2628 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2629 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW
2630 goto badexit;
2631 }
2632
381c1bae 2633#ifdef __SCO_VERSION__
93d47a36 2634 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
381c1bae 2635#endif
ed79a026 2636
93d47a36 2637 PUSHp(namebuf, len);
a0d0e21e
LW
2638 RETURN;
2639
7b52d656 2640 nuts:
fbcda526 2641 report_evil_fh(ggv);
93189314 2642 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2643
7b52d656 2644 badexit:
a0d0e21e
LW
2645 RETPUSHUNDEF;
2646
a0d0e21e
LW
2647}
2648
2649PP(pp_shutdown)
2650{
20b7effb 2651 dSP; dTARGET;
7452cf6a 2652 const int how = POPi;
159b6efe 2653 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2654 IO * const io = GvIOn(gv);
a0d0e21e 2655
8a6c0fcb 2656 if (!IoIFP(io))
a0d0e21e
LW
2657 goto nuts;
2658
6ad3d225 2659 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW
2660 RETURN;
2661
7b52d656 2662 nuts:
fbcda526 2663 report_evil_fh(gv);
93189314 2664 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2665 RETPUSHUNDEF;
a0d0e21e
LW
2666}
2667
b1c05ba5
DM
2668
2669/* also used for: pp_gsockopt() */
2670
a0d0e21e
LW
2671PP(pp_ssockopt)
2672{
20b7effb 2673 dSP;
7452cf6a 2674 const int optype = PL_op->op_type;
561b68a9 2675 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
7452cf6a
AL
2676 const unsigned int optname = (unsigned int) POPi;
2677 const unsigned int lvl = (unsigned int) POPi;
159b6efe 2678 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2679 IO * const io = GvIOn(gv);
a0d0e21e 2680 int fd;
1e422769 2681 Sock_size_t len;
a0d0e21e 2682
49225470 2683 if (!IoIFP(io))
a0d0e21e
LW
2684 goto nuts;
2685
760ac839 2686 fd = PerlIO_fileno(IoIFP(io));
375ed12a
JH
2687 if (fd < 0)
2688 goto nuts;
a0d0e21e
LW
2689 switch (optype) {
2690 case OP_GSOCKOPT:
748a9306 2691 SvGROW(sv, 257);
a0d0e21e 2692 (void)SvPOK_only(sv);
748a9306
LW
2693 SvCUR_set(sv,256);
2694 *SvEND(sv) ='\0';
1e422769 2695 len = SvCUR(sv);
6ad3d225 2696 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2697 goto nuts2;
ee2276e5
JH
2698#if defined(_AIX)
2699 /* XXX Configure test: does getsockopt set the length properly? */
2700 if (len == 256)
2701 len = sizeof(int);
2702#endif
1e422769 2703 SvCUR_set(sv, len);
748a9306 2704 *SvEND(sv) ='\0';
a0d0e21e
LW
2705 PUSHs(sv);
2706 break;
2707 case OP_SSOCKOPT: {
1215b447
JH
2708#if defined(__SYMBIAN32__)
2709# define SETSOCKOPT_OPTION_VALUE_T void *
2710#else
2711# define SETSOCKOPT_OPTION_VALUE_T const char *
2712#endif
2713 /* XXX TODO: We need to have a proper type (a Configure probe,
2714 * etc.) for what the C headers think of the third argument of
2715 * setsockopt(), the option_value read-only buffer: is it
2716 * a "char *", or a "void *", const or not. Some compilers
2717 * don't take kindly to e.g. assuming that "char *" implicitly
2718 * promotes to a "void *", or to explicitly promoting/demoting
2719 * consts to non/vice versa. The "const void *" is the SUS
2720 * definition, but that does not fly everywhere for the above
2721 * reasons. */
2722 SETSOCKOPT_OPTION_VALUE_T buf;
1e422769
PP
2723 int aint;
2724 if (SvPOKp(sv)) {
2d8e6c8d 2725 STRLEN l;
1215b447 2726 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2d8e6c8d 2727 len = l;
1e422769 2728 }
56ee1660 2729 else {
a0d0e21e 2730 aint = (int)SvIV(sv);
1215b447 2731 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
a0d0e21e
LW
2732 len = sizeof(int);
2733 }
6ad3d225 2734 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2735 goto nuts2;
3280af22 2736 PUSHs(&PL_sv_yes);
a0d0e21e
LW
2737 }
2738 break;
2739 }
2740 RETURN;
2741
7b52d656 2742 nuts:
fbcda526 2743 report_evil_fh(gv);
93189314 2744 SETERRNO(EBADF,SS_IVCHAN);
7b52d656 2745 nuts2:
a0d0e21e
LW
2746 RETPUSHUNDEF;
2747
a0d0e21e
LW
2748}
2749
b1c05ba5
DM
2750
2751/* also used for: pp_getsockname() */
2752
a0d0e21e
LW
2753PP(pp_getpeername)
2754{
20b7effb 2755 dSP;
7452cf6a 2756 const int optype = PL_op->op_type;
159b6efe 2757 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2758 IO * const io = GvIOn(gv);
7452cf6a 2759 Sock_size_t len;
a0d0e21e
LW
2760 SV *sv;
2761 int fd;
a0d0e21e 2762
49225470 2763 if (!IoIFP(io))
a0d0e21e
LW
2764 goto nuts;
2765
5fd8dd0d
TK
2766#ifdef HAS_SOCKADDR_STORAGE
2767 len = sizeof(struct sockaddr_storage);
2768#else
1e422769 2769 len = 256;
5fd8dd0d
TK
2770#endif
2771 sv = sv_2mortal(newSV(len+1));
2772 (void)SvPOK_only(sv);
1e422769 2773 SvCUR_set(sv, len);
748a9306 2774 *SvEND(sv) ='\0';
760ac839 2775 fd = PerlIO_fileno(IoIFP(io));
375ed12a
JH
2776 if (fd < 0)
2777 goto nuts;
a0d0e21e
LW
2778 switch (optype) {
2779 case OP_GETSOCKNAME:
6ad3d225 2780 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW
2781 goto nuts2;
2782 break;
2783 case OP_GETPEERNAME:
6ad3d225 2784 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2785 goto nuts2;
490ab354
JH
2786#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2787 {
2788 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";
2789 /* If the call succeeded, make sure we don't have a zeroed port/addr */
349d4f2f 2790 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2fbb330f 2791 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
490ab354 2792 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2793 goto nuts2;
490ab354
JH
2794 }
2795 }
2796#endif
a0d0e21e
LW
2797 break;
2798 }
13826f2c
CS
2799#ifdef BOGUS_GETNAME_RETURN
2800 /* Interactive Unix, getpeername() and getsockname()
2801 does not return valid namelen */
1e422769
PP
2802 if (len == BOGUS_GETNAME_RETURN)
2803 len = sizeof(struct sockaddr);
13826f2c 2804#endif
1e422769 2805 SvCUR_set(sv, len);
748a9306 2806 *SvEND(sv) ='\0';
a0d0e21e
LW
2807 PUSHs(sv);
2808 RETURN;
2809
7b52d656 2810 nuts:
fbcda526 2811 report_evil_fh(gv);
93189314 2812 SETERRNO(EBADF,SS_IVCHAN);
7b52d656 2813 nuts2:
a0d0e21e 2814 RETPUSHUNDEF;
7627e6d0 2815}
a0d0e21e 2816
a0d0e21e 2817#endif
a0d0e21e
LW
2818
2819/* Stat calls. */
2820
b1c05ba5
DM
2821/* also used for: pp_lstat() */
2822
a0d0e21e
LW
2823PP(pp_stat)
2824{
39644a26 2825 dSP;
10edeb5d 2826 GV *gv = NULL;
55dd8d50 2827 IO *io = NULL;
1c23e2bd 2828 U8 gimme;
a0d0e21e 2829 I32 max = 13;
109c43ed 2830 SV* sv;
a0d0e21e 2831
109c43ed
FC
2832 if (PL_op->op_flags & OPf_REF ? (gv = cGVOP_gv, 1)
2833 : !!(sv=POPs, gv = MAYBE_DEREF_GV(sv))) {
8a4e5b40 2834 if (PL_op->op_type == OP_LSTAT) {
5d3e98de 2835 if (gv != PL_defgv) {
5d329e6e 2836 do_fstat_warning_check:
a2a5de95 2837 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
147e3846 2838 "lstat() on filehandle%s%" SVf,
93fad930
FC
2839 gv ? " " : "",
2840 SVfARG(gv
bf29d05f
BF
2841 ? sv_2mortal(newSVhek(GvENAME_HEK(gv)))
2842 : &PL_sv_no));
5d3e98de 2843 } else if (PL_laststype != OP_LSTAT)
b042df57 2844 /* diag_listed_as: The stat preceding %s wasn't an lstat */
8a4e5b40 2845 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
8a4e5b40
DD
2846 }
2847
97c8f3e6
Z
2848 if (gv == PL_defgv) {
2849 if (PL_laststatval < 0)
2850 SETERRNO(EBADF,RMS_IFI);
2851 } else {
0d5064f1 2852 do_fstat_have_io:
3280af22 2853 PL_laststype = OP_STAT;
0d5064f1 2854 PL_statgv = gv ? gv : (GV *)io;
60e13354 2855 SvPVCLEAR(PL_statname);
5228a96c 2856 if(gv) {
ad02613c 2857 io = GvIO(gv);
0d5064f1
FC
2858 }
2859 if (io) {
5228a96c 2860 if (IoIFP(io)) {
375ed12a
JH
2861 int fd = PerlIO_fileno(IoIFP(io));
2862 if (fd < 0) {
97c8f3e6 2863 report_evil_fh(gv);
375ed12a
JH
2864 PL_laststatval = -1;
2865 SETERRNO(EBADF,RMS_IFI);
2866 } else {
2867 PL_laststatval = PerlLIO_fstat(fd, &PL_statcache);
375ed12a 2868 }
5228a96c 2869 } else if (IoDIRP(io)) {
5228a96c 2870 PL_laststatval =
3497a01f 2871 PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache);
5228a96c 2872 } else {
97c8f3e6 2873 report_evil_fh(gv);
5228a96c 2874 PL_laststatval = -1;
97c8f3e6 2875 SETERRNO(EBADF,RMS_IFI);
5228a96c 2876 }
97c8f3e6
Z
2877 } else {
2878 report_evil_fh(gv);
2879 PL_laststatval = -1;
2880 SETERRNO(EBADF,RMS_IFI);
2881 }
5228a96c
SP
2882 }
2883
9ddeeac9 2884 if (PL_laststatval < 0) {
a0d0e21e 2885 max = 0;
9ddeeac9 2886 }
a0d0e21e
LW
2887 }
2888 else {
7cb3f959 2889 const char *file;
a155eb05
TC
2890 const char *temp;
2891 STRLEN len;
109c43ed 2892 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2893 io = MUTABLE_IO(SvRV(sv));
ad02613c
SP
2894 if (PL_op->op_type == OP_LSTAT)
2895 goto do_fstat_warning_check;
2896 goto do_fstat_have_io;
2897 }
4bac9ae4 2898 SvTAINTED_off(PL_statname); /* previous tainting irrelevant */
a155eb05
TC
2899 temp = SvPV_nomg_const(sv, len);
2900 sv_setpv(PL_statname, temp);
a0714e2c 2901 PL_statgv = NULL;
533c011a 2902 PL_laststype = PL_op->op_type;
7cb3f959 2903 file = SvPV_nolen_const(PL_statname);
a155eb05
TC
2904 if (!IS_SAFE_PATHNAME(temp, len, OP_NAME(PL_op))) {
2905 PL_laststatval = -1;
2906 }
2907 else if (PL_op->op_type == OP_LSTAT)
7cb3f959 2908 PL_laststatval = PerlLIO_lstat(file, &PL_statcache);
a0d0e21e 2909 else
7cb3f959 2910 PL_laststatval = PerlLIO_stat(file, &PL_statcache);
3280af22 2911 if (PL_laststatval < 0) {
7cb3f959 2912 if (ckWARN(WARN_NEWLINE) && should_warn_nl(file)) {
5d37acd6 2913 /* PL_warn_nl is constant */
7347ee54 2914 GCC_DIAG_IGNORE_STMT(-Wformat-nonliteral);
9014280d 2915 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
7347ee54 2916 GCC_DIAG_RESTORE_STMT;
5d37acd6 2917 }
a0d0e21e
LW
2918 max = 0;
2919 }
2920 }
2921
54310121
PP
2922 gimme = GIMME_V;
2923 if (gimme != G_ARRAY) {
2924 if (gimme != G_VOID)
2925 XPUSHs(boolSV(max));
2926 RETURN;
a0d0e21e
LW
2927 }
2928 if (max) {
36477c24
PP
2929 EXTEND(SP, max);
2930 EXTEND_MORTAL(max);
6e449a3a 2931 mPUSHi(PL_statcache.st_dev);
2e8ea15a
Z
2932 {
2933 /*
2934 * We try to represent st_ino as a native IV or UV where
2935 * possible, but fall back to a decimal string where
2936 * necessary. The code to generate these decimal strings
2937 * is quite obtuse, because (a) we're portable to non-POSIX
2938 * platforms where st_ino might be signed; (b) we didn't
2939 * necessarily detect at Configure time whether st_ino is
2940 * signed; (c) we're portable to non-POSIX platforms where
2941 * ino_t isn't defined, so have no name for the type of
2942 * st_ino; and (d) sprintf() doesn't necessarily support
2943 * integers as large as st_ino.
2944 */
009165e9 2945 bool neg;
2e8ea15a 2946 Stat_t s;
7347ee54
Z
2947 CLANG_DIAG_IGNORE_STMT(-Wtautological-compare);
2948 GCC_DIAG_IGNORE_STMT(-Wtype-limits);
009165e9 2949 neg = PL_statcache.st_ino < 0;
7347ee54
Z
2950 GCC_DIAG_RESTORE_STMT;
2951 CLANG_DIAG_RESTORE_STMT;
009165e9 2952 if (neg) {
2e8ea15a
Z
2953 s.st_ino = (IV)PL_statcache.st_ino;
2954 if (LIKELY(s.st_ino == PL_statcache.st_ino)) {
2955 mPUSHi(s.st_ino);
2956 } else {
2957 char buf[sizeof(s.st_ino)*3+1], *p;
2958 s.st_ino = PL_statcache.st_ino;
2959 for (p = buf + sizeof(buf); p != buf+1; ) {
2960 Stat_t t;
2961 t.st_ino = s.st_ino / 10;
2962 *--p = '0' + (int)(t.st_ino*10 - s.st_ino);
2963 s.st_ino = t.st_ino;
2964 }
2965 while (*p == '0')
2966 p++;
2967 *--p = '-';
2968 mPUSHp(p, buf+sizeof(buf) - p);
2969 }
009165e9 2970 } else {
2e8ea15a
Z
2971 s.st_ino = (UV)PL_statcache.st_ino;
2972 if (LIKELY(s.st_ino == PL_statcache.st_ino)) {
2973 mPUSHu(s.st_ino);
2974 } else {
2975 char buf[sizeof(s.st_ino)*3], *p;
2976 s.st_ino = PL_statcache.st_ino;
2977 for (p = buf + sizeof(buf); p != buf; ) {
2978 Stat_t t;
2979 t.st_ino = s.st_ino / 10;
2980 *--p = '0' + (int)(s.st_ino - t.st_ino*10);
2981 s.st_ino = t.st_ino;
2982 }
2983 while (*p == '0')
2984 p++;
2985 mPUSHp(p, buf+sizeof(buf) - p);
2986 }
2987 }
2988 }
6e449a3a
MHM
2989 mPUSHu(PL_statcache.st_mode);
2990 mPUSHu(PL_statcache.st_nlink);
dfff4baf
BF
2991
2992 sv_setuid(PUSHmortal, PL_statcache.st_uid);
2993 sv_setgid(PUSHmortal, PL_statcache.st_gid);
2994
cbdc8872 2995#ifdef USE_STAT_RDEV
6e449a3a 2996 mPUSHi(PL_statcache.st_rdev);
cbdc8872 2997#else
84bafc02 2998 PUSHs(newSVpvs_flags("", SVs_TEMP));
cbdc8872 2999#endif
146174a9 3000#if Off_t_size > IVSIZE
6e449a3a 3001 mPUSHn(PL_statcache.st_size);
146174a9 3002#else
6e449a3a 3003 mPUSHi(PL_statcache.st_size);
146174a9 3004#endif
cbdc8872 3005#ifdef BIG_TIME
6e449a3a
MHM
3006 mPUSHn(PL_statcache.st_atime);
3007 mPUSHn(PL_statcache.st_mtime);
3008 mPUSHn(PL_statcache.st_ctime);
cbdc8872 3009#else
6e449a3a
MHM
3010 mPUSHi(PL_statcache.st_atime);
3011 mPUSHi(PL_statcache.st_mtime);
3012 mPUSHi(PL_statcache.st_ctime);
cbdc8872 3013#endif
a0d0e21e 3014#ifdef USE_STAT_BLOCKS
6e449a3a
MHM
3015 mPUSHu(PL_statcache.st_blksize);
3016 mPUSHu(PL_statcache.st_blocks);
a0d0e21e 3017#else
84bafc02
NC
3018 PUSHs(newSVpvs_flags("", SVs_TEMP));
3019 PUSHs(newSVpvs_flags("", SVs_TEMP));
a0d0e21e
LW
3020#endif
3021 }
3022 RETURN;
3023}
3024
6c48f025
NC
3025/* All filetest ops avoid manipulating the perl stack pointer in their main
3026 bodies (since commit d2c4d2d1e22d3125), and return using either
3027 S_ft_return_false() or S_ft_return_true(). These two helper functions are
3028 the only two which manipulate the perl stack. To ensure that no stack
3029 manipulation macros are used, the filetest ops avoid defining a local copy
3030 of the stack pointer with dSP. */
3031
8db8f6b6
FC
3032/* If the next filetest is stacked up with this one
3033 (PL_op->op_private & OPpFT_STACKING), we leave
3034 the original argument on the stack for success,
3035 and skip the stacked operators on failure.
3036 The next few macros/functions take care of this.
3037*/
3038
3039static OP *
9a6b02e8 3040S_ft_return_false(pTHX_ SV *ret) {
8db8f6b6 3041 OP *next = NORMAL;
697f9d37
NC
3042 dSP;
3043
226b9201 3044 if (PL_op->op_flags & OPf_REF) XPUSHs(ret);
8db8f6b6
FC
3045 else SETs(ret);
3046 PUTBACK;
697f9d37 3047
9a6b02e8 3048 if (PL_op->op_private & OPpFT_STACKING) {
1af91490 3049 while (next && OP_IS_FILETEST(next->op_type)
9a6b02e8
NC
3050 && next->op_private & OPpFT_STACKED)
3051 next = next->op_next;
3052 }
8db8f6b6
FC
3053 return next;
3054}
3055
07ed4d4b
NC
3056PERL_STATIC_INLINE OP *
3057S_ft_return_true(pTHX_ SV *ret) {
3058 dSP;
3059 if (PL_op->op_flags & OPf_REF)
3060 XPUSHs(PL_op->op_private & OPpFT_STACKING ? (SV *)cGVOP_gv : (ret));
3061 else if (!(PL_op->op_private & OPpFT_STACKING))
3062 SETs(ret);
3063 PUTBACK;
3064 return NORMAL;
3065}
8db8f6b6 3066
48d023d6
NC
3067#define FT_RETURNNO return S_ft_return_false(aTHX_ &PL_sv_no)
3068#define FT_RETURNUNDEF return S_ft_return_false(aTHX_ &PL_sv_undef)
3069#define FT_RETURNYES return S_ft_return_true(aTHX_ &PL_sv_yes)
8db8f6b6 3070
6f1401dc 3071#define tryAMAGICftest_MG(chr) STMT_START { \
d2f67720 3072 if ( (SvFLAGS(*PL_stack_sp) & (SVf_ROK|SVs_GMG)) \
8db8f6b6
FC
3073 && PL_op->op_flags & OPf_KIDS) { \
3074 OP *next = S_try_amagic_ftest(aTHX_ chr); \
3075 if (next) return next; \
3076 } \
6f1401dc
DM
3077 } STMT_END
3078
8db8f6b6 3079STATIC OP *
6f1401dc 3080S_try_amagic_ftest(pTHX_ char chr) {
d2f67720 3081 SV *const arg = *PL_stack_sp;
6f1401dc
DM
3082
3083 assert(chr != '?');
c5780028 3084 if (!(PL_op->op_private & OPpFT_STACKING)) SvGETMAGIC(arg);
6f1401dc 3085
d2f67720 3086 if (SvAMAGIC(arg))
6f1401dc
DM
3087 {
3088 const char tmpchr = chr;
6f1401dc
DM
3089 SV * const tmpsv = amagic_call(arg,
3090 newSVpvn_flags(&tmpchr, 1, SVs_TEMP),
3091 ftest_amg, AMGf_unary);
3092
3093 if (!tmpsv)
8db8f6b6 3094 return NULL;
6f1401dc 3095
48d023d6
NC
3096 return SvTRUE(tmpsv)
3097 ? S_ft_return_true(aTHX_ tmpsv) : S_ft_return_false(aTHX_ tmpsv);
6f1401dc 3098 }
8db8f6b6 3099 return NULL;
6f1401dc
DM
3100}
3101
3102
b1c05ba5
DM
3103/* also used for: pp_fteexec() pp_fteread() pp_ftewrite() pp_ftrexec()
3104 * pp_ftrwrite() */
3105
a0d0e21e
LW
3106PP(pp_ftrread)
3107{
9cad6237 3108 I32 result;
af9e49b4 3109 /* Not const, because things tweak this below. Not bool, because there's
f3574cc6 3110 no guarantee that OPpFT_ACCESS is <= CHAR_MAX */
af9e49b4
NC
3111#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
3112 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
3113 /* Giving some sort of initial value silences compilers. */
3114# ifdef R_OK
3115 int access_mode = R_OK;
3116# else
3117 int access_mode = 0;
3118# endif
5ff3f7a4 3119#else
af9e49b4
NC
3120 /* access_mode is never used, but leaving use_access in makes the
3121 conditional compiling below much clearer. */
3122 I32 use_access = 0;
5ff3f7a4 3123#endif
2dcac756 3124 Mode_t stat_mode = S_IRUSR;
a0d0e21e 3125
af9e49b4 3126 bool effective = FALSE;
07fe7c6a 3127 char opchar = '?';
af9e49b4 3128
7fb13887
BM
3129 switch (PL_op->op_type) {
3130 case OP_FTRREAD: opchar = 'R'; break;
3131 case OP_FTRWRITE: opchar = 'W'; break;
3132 case OP_FTREXEC: opchar = 'X'; break;
3133 case OP_FTEREAD: opchar = 'r'; break;
3134 case OP_FTEWRITE: opchar = 'w'; break;
3135 case OP_FTEEXEC: opchar = 'x'; break;
3136 }
6f1401dc 3137 tryAMAGICftest_MG(opchar);
7fb13887 3138
af9e49b4
NC
3139 switch (PL_op->op_type) {
3140 case OP_FTRREAD:
3141#if !(defined(HAS_ACCESS) && defined(R_OK))
3142 use_access = 0;
3143#endif
3144 break;
3145
3146 case OP_FTRWRITE:
5ff3f7a4 3147#if defined(HAS_ACCESS) && defined(W_OK)
af9e49b4 3148 access_mode = W_OK;
5ff3f7a4 3149#else
af9e49b4 3150 use_access = 0;
5ff3f7a4 3151#endif
af9e49b4
NC
3152 stat_mode = S_IWUSR;
3153 break;
a0d0e21e 3154
af9e49b4 3155 case OP_FTREXEC:
5ff3f7a4 3156#if defined(HAS_ACCESS) && defined(X_OK)
af9e49b4 3157 access_mode = X_OK;
5ff3f7a4 3158#else
af9e49b4 3159 use_access = 0;
5ff3f7a4 3160#endif
af9e49b4
NC
3161 stat_mode = S_IXUSR;
3162 break;
a0d0e21e 3163
af9e49b4 3164 case OP_FTEWRITE:
faee0e31 3165#ifdef PERL_EFF_ACCESS
af9e49b4 3166 access_mode = W_OK;
5ff3f7a4 3167#endif
af9e49b4 3168 stat_mode = S_IWUSR;
924ba076 3169 /* FALLTHROUGH */
a0d0e21e 3170
af9e49b4
NC
3171 case OP_FTEREAD:
3172#ifndef PERL_EFF_ACCESS
3173 use_access = 0;
3174#endif
3175 effective = TRUE;
3176 break;
3177
af9e49b4 3178 case OP_FTEEXEC:
faee0e31 3179#ifdef PERL_EFF_ACCESS
b376053d 3180 access_mode = X_OK;
5ff3f7a4 3181#else
af9e49b4 3182 use_access = 0;
5ff3f7a4 3183#endif
af9e49b4
NC
3184 stat_mode = S_IXUSR;
3185 effective = TRUE;
3186 break;
3187 }
a0d0e21e 3188
af9e49b4
NC
3189 if (use_access) {
3190#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
a155eb05
TC
3191 STRLEN len;
3192 const char *name = SvPV(*PL_stack_sp, len);
3193 if (!IS_SAFE_PATHNAME(name, len, OP_NAME(PL_op))) {
3194 result = -1;
3195 }
3196 else if (effective) {
af9e49b4
NC
3197# ifdef PERL_EFF_ACCESS
3198 result = PERL_EFF_ACCESS(name, access_mode);
3199# else
3200 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
3201 OP_NAME(PL_op));
3202# endif
3203 }
3204 else {
3205# ifdef HAS_ACCESS
3206 result = access(name, access_mode);
3207# else
3208 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
3209# endif
3210 }
5ff3f7a4 3211 if (result == 0)
d2c4d2d1 3212 FT_RETURNYES;
5ff3f7a4 3213 if (result < 0)
d2c4d2d1
FC
3214 FT_RETURNUNDEF;
3215 FT_RETURNNO;
af9e49b4 3216#endif
22865c03 3217 }
af9e49b4 3218
40c852de 3219 result = my_stat_flags(0);
a0d0e21e 3220 if (result < 0)
8db8f6b6 3221 FT_RETURNUNDEF;
af9e49b4 3222 if (cando(stat_mode, effective, &PL_statcache))
8db8f6b6
FC
3223 FT_RETURNYES;
3224 FT_RETURNNO;
a0d0e21e
LW
3225}
3226
b1c05ba5
DM
3227
3228/* also used for: pp_ftatime() pp_ftctime() pp_ftmtime() pp_ftsize() */
3229
a0d0e21e
LW
3230PP(pp_ftis)
3231{
fbb0b3b3 3232 I32 result;
d7f0a2f4 3233 const int op_type = PL_op->op_type;
07fe7c6a 3234 char opchar = '?';
07fe7c6a
BM
3235
3236 switch (op_type) {
3237 case OP_FTIS: opchar = 'e'; break;
3238 case OP_FTSIZE: opchar = 's'; break;
3239 case OP_FTMTIME: opchar = 'M'; break;
3240 case OP_FTCTIME: opchar = 'C'; break;
3241 case OP_FTATIME: opchar = 'A'; break;
3242 }
6f1401dc 3243 tryAMAGICftest_MG(opchar);
07fe7c6a 3244
40c852de 3245 result = my_stat_flags(0);
a0d0e21e 3246 if (result < 0)
8db8f6b6 3247 FT_RETURNUNDEF;
d7f0a2f4 3248 if (op_type == OP_FTIS)
8db8f6b6 3249 FT_RETURNYES;
957b0e1d 3250 {
d7f0a2f4
NC
3251 /* You can't dTARGET inside OP_FTIS, because you'll get
3252 "panic: pad_sv po" - the op is not flagged to have a target. */
957b0e1d 3253 dTARGET;
d7f0a2f4 3254 switch (op_type) {
957b0e1d
NC
3255 case OP_FTSIZE:
3256#if Off_t_size > IVSIZE
8db8f6b6 3257 sv_setnv(TARG, (NV)PL_statcache.st_size);
957b0e1d 3258#else
8db8f6b6 3259 sv_setiv(TARG, (IV)PL_statcache.st_size);
957b0e1d
NC
3260#endif
3261 break;
3262 case OP_FTMTIME:
8db8f6b6
FC
3263 sv_setnv(TARG,
3264 ((NV)PL_basetime - PL_statcache.st_mtime) / 86400.0 );
957b0e1d
NC
3265 break;
3266 case OP_FTATIME:
8db8f6b6
FC
3267 sv_setnv(TARG,
3268 ((NV)PL_basetime - PL_statcache.st_atime) / 86400.0 );
957b0e1d
NC
3269 break;
3270 case OP_FTCTIME:
8db8f6b6
FC
3271 sv_setnv(TARG,
3272 ((NV)PL_basetime - PL_statcache.st_ctime) / 86400.0 );
957b0e1d
NC
3273 break;
3274 }
8db8f6b6 3275 SvSETMAGIC(TARG);
f4c975aa 3276 return SvTRUE_nomg_NN(TARG)
48d023d6 3277 ? S_ft_return_true(aTHX_ TARG) : S_ft_return_false(aTHX_ TARG);
957b0e1d 3278 }
a0d0e21e
LW
3279}
3280
b1c05ba5
DM
3281
3282/* also used for: pp_ftblk() pp_ftchr() pp_ftdir() pp_fteowned()
3283 * pp_ftfile() pp_ftpipe() pp_ftsgid() pp_ftsock()
3284 * pp_ftsuid() pp_ftsvtx() pp_ftzero() */
3285
a0d0e21e
LW
3286PP(pp_ftrowned)
3287{
fbb0b3b3 3288 I32 result;
07fe7c6a 3289 char opchar = '?';
17ad201a 3290
7fb13887
BM
3291 switch (PL_op->op_type) {
3292 case OP_FTROWNED: opchar = 'O'; break;
3293 case OP_FTEOWNED: opchar = 'o'; break;
3294 case OP_FTZERO: opchar = 'z'; break;
3295 case OP_FTSOCK: opchar = 'S'; break;
3296 case OP_FTCHR: opchar = 'c'; break;
3297 case OP_FTBLK: opchar = 'b'; break;
3298 case OP_FTFILE: opchar = 'f'; break;
3299 case OP_FTDIR: opchar = 'd'; break;
3300 case OP_FTPIPE: opchar = 'p'; break;
3301 case OP_FTSUID: opchar = 'u'; break;
3302 case OP_FTSGID: opchar = 'g'; break;
3303 case OP_FTSVTX: opchar = 'k'; break;
3304 }
6f1401dc 3305 tryAMAGICftest_MG(opchar);
7fb13887 3306
40c852de 3307 result = my_stat_flags(0);
a0d0e21e 3308 if (result < 0)
8db8f6b6 3309 FT_RETURNUNDEF;
f1cb2d48
NC
3310 switch (PL_op->op_type) {
3311 case OP_FTROWNED:
985213f2 3312 if (PL_statcache.st_uid == PerlProc_getuid())
8db8f6b6 3313 FT_RETURNYES;
f1cb2d48
NC
3314 break;
3315 case OP_FTEOWNED:
985213f2 3316 if (PL_statcache.st_uid == PerlProc_geteuid())
8db8f6b6 3317 FT_RETURNYES;
f1cb2d48
NC
3318 break;
3319 case OP_FTZERO:
3320 if (PL_statcache.st_size == 0)
8db8f6b6 3321 FT_RETURNYES;
f1cb2d48
NC
3322 break;
3323 case OP_FTSOCK:
3324 if (S_ISSOCK(PL_statcache.st_mode))
8db8f6b6 3325 FT_RETURNYES;
f1cb2d48
NC
3326 break;
3327 case OP_FTCHR:
3328 if (S_ISCHR(PL_statcache.st_mode))
8db8f6b6 3329 FT_RETURNYES;
f1cb2d48
NC
3330 break;
3331 case OP_FTBLK:
3332 if (S_ISBLK(PL_statcache.st_mode))
8db8f6b6 3333 FT_RETURNYES;
f1cb2d48
NC
3334 break;
3335 case OP_FTFILE:
3336 if (S_ISREG(PL_statcache.st_mode))
8db8f6b6 3337 FT_RETURNYES;
f1cb2d48
NC
3338 break;
3339 case OP_FTDIR:
3340 if (S_ISDIR(PL