This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
https://perl5.git.perl.org / perl5.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Remove OP_phoney_{IN,OUT}PUT_ONLY, as they are no longer used or supported.
[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
CB		 32#include "time64.h"
33#include "time64.c"
a0d0e21e 34
f1066039
JH		 35#ifdef I_SHADOW
36/* Shadow password support for solaris - pdo@cs.umd.edu
37 * Not just Solaris: at least HP-UX, IRIX, Linux.
3813c136
JH		 38 * The API is from SysV.
39 *
40 * There are at least two more shadow interfaces,
41 * see the comments in pp_gpwent().
42 *
43 * --jhi */
44# ifdef __hpux__
c529f79d 45/* There is a MAXINT coming from <shadow.h> <- <hpsecurity.h> <- <values.h>
301e8125 46 * and another MAXINT from "perl.h" <- <sys/param.h>. */
3813c136
JH		 47# undef MAXINT
48# endif
49# include <shadow.h>
8c0bfa08
PB		 50#endif
51
76c32331 52#ifdef I_SYS_WAIT
53# include <sys/wait.h>
54#endif
55
56#ifdef I_SYS_RESOURCE
57# include <sys/resource.h>
16d20bd9 58#endif
a0d0e21e 59
2986a63f
JH		 60#ifdef NETWARE
61NETDB_DEFINE_CONTEXT
62#endif
63
a0d0e21e 64#ifdef HAS_SELECT
1e743fda
JH		 65# ifdef I_SYS_SELECT
66# include <sys/select.h>
67# endif
a0d0e21e 68#endif
a0d0e21e 69
dc45a647
MB		 70/* XXX Configure test needed.
71 h_errno might not be a simple 'int', especially for multi-threaded
5ff3f7a4
GS		 72 applications, see "extern int errno in perl.h". Creating such
73 a test requires taking into account the differences between
74 compiling multithreaded and singlethreaded ($ccflags et al).
75 HOST_NOT_FOUND is typically defined in <netdb.h>.
dc45a647 76*/
cb50131a 77#if defined(HOST_NOT_FOUND) && !defined(h_errno) && !defined(__CYGWIN__)
a0d0e21e
LW		 78extern int h_errno;
79#endif
80
81#ifdef HAS_PASSWD
82# ifdef I_PWD
83# include <pwd.h>
84# else
fd8cd3a3 85# if !defined(VMS)
20ce7b12
GS		 86 struct passwd *getpwnam (char *);
87 struct passwd *getpwuid (Uid_t);
fd8cd3a3 88# endif
a0d0e21e 89# endif
28e8609d 90# ifdef HAS_GETPWENT
10bc17b6 91#ifndef getpwent
20ce7b12 92 struct passwd *getpwent (void);
c2a8f790 93#elif defined (VMS) && defined (my_getpwent)
9fa802f3 94 struct passwd *Perl_my_getpwent (pTHX);
10bc17b6 95#endif
28e8609d 96# endif
a0d0e21e
LW		 97#endif
98
99#ifdef HAS_GROUP
100# ifdef I_GRP
101# include <grp.h>
102# else
20ce7b12
GS		 103 struct group *getgrnam (char *);
104 struct group *getgrgid (Gid_t);
a0d0e21e 105# endif
28e8609d 106# ifdef HAS_GETGRENT
10bc17b6 107#ifndef getgrent
20ce7b12 108 struct group *getgrent (void);
10bc17b6 109#endif
28e8609d 110# endif
a0d0e21e
LW		 111#endif
112
113#ifdef I_UTIME
3730b96e 114# if defined(_MSC_VER) || defined(__MINGW32__)
3fe9a6f1 115# include <sys/utime.h>
116# else
117# include <utime.h>
118# endif
a0d0e21e 119#endif
a0d0e21e 120
cbdc8872 121#ifdef HAS_CHSIZE
cd52b7b2 122# ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
123# undef my_chsize
124# endif
72cc7e2a 125# define my_chsize PerlLIO_chsize
27da23d5
JH		 126#else
127# ifdef HAS_TRUNCATE
128# define my_chsize PerlLIO_chsize
129# else
130I32 my_chsize(int fd, Off_t length);
131# endif
cbdc8872 132#endif
133
ff68c719 134#ifdef HAS_FLOCK
135# define FLOCK flock
136#else /* no flock() */
137
36477c24 138 /* fcntl.h might not have been included, even if it exists, because
139 the current Configure only sets I_FCNTL if it's needed to pick up
140 the *_OK constants. Make sure it has been included before testing
141 the fcntl() locking constants. */
142# if defined(HAS_FCNTL) && !defined(I_FCNTL)
143# include <fcntl.h>
144# endif
145
9d9004a9 146# if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
ff68c719 147# define FLOCK fcntl_emulate_flock
148# define FCNTL_EMULATE_FLOCK
149# else /* no flock() or fcntl(F_SETLK,...) */
150# ifdef HAS_LOCKF
151# define FLOCK lockf_emulate_flock
152# define LOCKF_EMULATE_FLOCK
153# endif /* lockf */
154# endif /* no flock() or fcntl(F_SETLK,...) */
155
156# ifdef FLOCK
20ce7b12 157 static int FLOCK (int, int);
ff68c719 158
159 /*
160 * These are the flock() constants. Since this sytems doesn't have
161 * flock(), the values of the constants are probably not available.
162 */
163# ifndef LOCK_SH
164# define LOCK_SH 1
165# endif
166# ifndef LOCK_EX
167# define LOCK_EX 2
168# endif
169# ifndef LOCK_NB
170# define LOCK_NB 4
171# endif
172# ifndef LOCK_UN
173# define LOCK_UN 8
174# endif
175# endif /* emulating flock() */
176
177#endif /* no flock() */
55497cff 178
85ab1d1d 179#define ZBTLEN 10
27da23d5 180static const char zero_but_true[ZBTLEN + 1] = "0 but true";
85ab1d1d 181
5ff3f7a4
GS		 182#if defined(I_SYS_ACCESS) && !defined(R_OK)
183# include <sys/access.h>
184#endif
185
c529f79d
CB		 186#if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
187# define FD_CLOEXEC 1 /* NeXT needs this */
188#endif
189
a4af207c
JH		 190#include "reentr.h"
191
9cffb111
OS		 192#ifdef __Lynx__
193/* Missing protos on LynxOS */
194void sethostent(int);
195void endhostent(void);
196void setnetent(int);
197void endnetent(void);
198void setprotoent(int);
199void endprotoent(void);
200void setservent(int);
201void endservent(void);
202#endif
203
faee0e31 204#undef PERL_EFF_ACCESS /* EFFective uid/gid ACCESS */
5ff3f7a4
GS		 205
206/* F_OK unused: if stat() cannot find it... */
207
d7558cad 208#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
c955f117 209 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
d7558cad 210# define PERL_EFF_ACCESS(p,f) (access((p), (f) | EFF_ONLY_OK))
5ff3f7a4
GS		 211#endif
212
d7558cad 213#if !defined(PERL_EFF_ACCESS) && defined(HAS_EACCESS)
3813c136 214# ifdef I_SYS_SECURITY
5ff3f7a4
GS		 215# include <sys/security.h>
216# endif
c955f117
JH		 217# ifdef ACC_SELF
218 /* HP SecureWare */
d7558cad 219# define PERL_EFF_ACCESS(p,f) (eaccess((p), (f), ACC_SELF))
c955f117
JH		 220# else
221 /* SCO */
d7558cad 222# define PERL_EFF_ACCESS(p,f) (eaccess((p), (f)))
c955f117 223# endif
5ff3f7a4
GS		 224#endif
225
d7558cad 226#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESSX) && defined(ACC_SELF)
c955f117 227 /* AIX */
d7558cad 228# define PERL_EFF_ACCESS(p,f) (accessx((p), (f), ACC_SELF))
5ff3f7a4
GS		 229#endif
230
d7558cad
NC		 231
232#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) \
327c3667
GS		 233 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
234 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
5ff3f7a4 235/* The Hard Way. */
327c3667 236STATIC int
7f4774ae 237S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
ba106d47 238{
c4420975
AL		 239 const Uid_t ruid = getuid();
240 const Uid_t euid = geteuid();
241 const Gid_t rgid = getgid();
242 const Gid_t egid = getegid();
5ff3f7a4
GS		 243 int res;
244
5ff3f7a4 245#if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
cea2e8a9 246 Perl_croak(aTHX_ "switching effective uid is not implemented");
5ff3f7a4
GS		 247#else
248#ifdef HAS_SETREUID
249 if (setreuid(euid, ruid))
250#else
251#ifdef HAS_SETRESUID
252 if (setresuid(euid, ruid, (Uid_t)-1))
253#endif
254#endif
cea2e8a9 255 Perl_croak(aTHX_ "entering effective uid failed");
5ff3f7a4
GS		 256#endif
257
258#if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
cea2e8a9 259 Perl_croak(aTHX_ "switching effective gid is not implemented");
5ff3f7a4
GS		 260#else
261#ifdef HAS_SETREGID
262 if (setregid(egid, rgid))
263#else
264#ifdef HAS_SETRESGID
265 if (setresgid(egid, rgid, (Gid_t)-1))
266#endif
267#endif
cea2e8a9 268 Perl_croak(aTHX_ "entering effective gid failed");
5ff3f7a4
GS		 269#endif
270
271 res = access(path, mode);
272
273#ifdef HAS_SETREUID
274 if (setreuid(ruid, euid))
275#else
276#ifdef HAS_SETRESUID
277 if (setresuid(ruid, euid, (Uid_t)-1))
278#endif
279#endif
cea2e8a9 280 Perl_croak(aTHX_ "leaving effective uid failed");
5ff3f7a4
GS		 281
282#ifdef HAS_SETREGID
283 if (setregid(rgid, egid))
284#else
285#ifdef HAS_SETRESGID
286 if (setresgid(rgid, egid, (Gid_t)-1))
287#endif
288#endif
cea2e8a9 289 Perl_croak(aTHX_ "leaving effective gid failed");
5ff3f7a4
GS		 290
291 return res;
292}
d6864606 293# define PERL_EFF_ACCESS(p,f) (S_emulate_eaccess(aTHX_ (p), (f)))
5ff3f7a4
GS		 294#endif
295
a0d0e21e
LW		 296PP(pp_backtick)
297{
97aff369 298 dVAR; dSP; dTARGET;
760ac839 299 PerlIO *fp;
1b6737cc 300 const char * const tmps = POPpconstx;
f54cb97a 301 const I32 gimme = GIMME_V;
e1ec3a88 302 const char *mode = "r";
54310121 303
a0d0e21e 304 TAINT_PROPER("``");
16fe6d59
GS		 305 if (PL_op->op_private & OPpOPEN_IN_RAW)
306 mode = "rb";
307 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
308 mode = "rt";
2fbb330f 309 fp = PerlProc_popen(tmps, mode);
a0d0e21e 310 if (fp) {
11bcd5da 311 const char * const type = Perl_PerlIO_context_layers(aTHX_ NULL);
ac27b0f5
NIS		 312 if (type && *type)
313 PerlIO_apply_layers(aTHX_ fp,mode,type);
314
54310121 315 if (gimme == G_VOID) {
96827780
MB		 316 char tmpbuf[256];
317 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
a79db61d 318 NOOP;
54310121 319 }
320 else if (gimme == G_SCALAR) {
d343c3ef 321 ENTER_with_name("backtick");
75af1a9c 322 SAVESPTR(PL_rs);
fa326138 323 PL_rs = &PL_sv_undef;
76f68e9b 324 sv_setpvs(TARG, ""); /* note that this preserves previous buffer */
bd61b366 325 while (sv_gets(TARG, fp, SvCUR(TARG)) != NULL)
a79db61d 326 NOOP;
d343c3ef 327 LEAVE_with_name("backtick");
a0d0e21e 328 XPUSHs(TARG);
aa689395 329 SvTAINTED_on(TARG);
a0d0e21e
LW		 330 }
331 else {
a0d0e21e 332 for (;;) {
561b68a9 333 SV * const sv = newSV(79);
bd61b366 334 if (sv_gets(sv, fp, 0) == NULL) {
a0d0e21e
LW		 335 SvREFCNT_dec(sv);
336 break;
337 }
6e449a3a 338 mXPUSHs(sv);
a0d0e21e 339 if (SvLEN(sv) - SvCUR(sv) > 20) {
1da4ca5f 340 SvPV_shrink_to_cur(sv);
a0d0e21e 341 }
aa689395 342 SvTAINTED_on(sv);
a0d0e21e
LW		 343 }
344 }
2fbb330f 345 STATUS_NATIVE_CHILD_SET(PerlProc_pclose(fp));
aa689395 346 TAINT; /* "I believe that this is not gratuitous!" */
a0d0e21e
LW		 347 }
348 else {
37038d91 349 STATUS_NATIVE_CHILD_SET(-1);
54310121 350 if (gimme == G_SCALAR)
a0d0e21e
LW		 351 RETPUSHUNDEF;
352 }
353
354 RETURN;
355}
356
357PP(pp_glob)
358{
27da23d5 359 dVAR;
a0d0e21e 360 OP *result;
f5284f61
IZ		 361 tryAMAGICunTARGET(iter, -1);
362
71686f12
GS		 363 /* Note that we only ever get here if File::Glob fails to load
364 * without at the same time croaking, for some reason, or if
365 * perl was built with PERL_EXTERNAL_GLOB */
366
d343c3ef 367 ENTER_with_name("glob");
a0d0e21e 368
c90c0ff4 369#ifndef VMS
3280af22 370 if (PL_tainting) {
7bac28a0 371 /*
372 * The external globbing program may use things we can't control,
373 * so for security reasons we must assume the worst.
374 */
375 TAINT;
22c35a8c 376 taint_proper(PL_no_security, "glob");
7bac28a0 377 }
c90c0ff4 378#endif /* !VMS */
7bac28a0 379
3280af22 380 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
159b6efe 381 PL_last_in_gv = MUTABLE_GV(*PL_stack_sp--);
a0d0e21e 382
3280af22 383 SAVESPTR(PL_rs); /* This is not permanent, either. */
84bafc02 384 PL_rs = newSVpvs_flags("\000", SVs_TEMP);
c07a80fd 385#ifndef DOSISH
386#ifndef CSH
6b88bc9c 387 *SvPVX(PL_rs) = '\n';
a0d0e21e 388#endif /* !CSH */
55497cff 389#endif /* !DOSISH */
c07a80fd 390
a0d0e21e 391 result = do_readline();
d343c3ef 392 LEAVE_with_name("glob");
a0d0e21e
LW		 393 return result;
394}
395
a0d0e21e
LW		 396PP(pp_rcatline)
397{
97aff369 398 dVAR;
146174a9 399 PL_last_in_gv = cGVOP_gv;
a0d0e21e
LW		 400 return do_readline();
401}
402
403PP(pp_warn)
404{
97aff369 405 dVAR; dSP; dMARK;
c5df3096
Z		 406 SV *exsv;
407 const char *pv;
06bf62c7 408 STRLEN len;
b59aed67 409 if (SP - MARK > 1) {
a0d0e21e 410 dTARGET;
3280af22 411 do_join(TARG, &PL_sv_no, MARK, SP);
c5df3096 412 exsv = TARG;
a0d0e21e
LW		 413 SP = MARK + 1;
414 }
b59aed67 415 else if (SP == MARK) {
c5df3096 416 exsv = &PL_sv_no;
b59aed67 417 EXTEND(SP, 1);
83f957ec 418 SP = MARK + 1;
b59aed67 419 }
a0d0e21e 420 else {
c5df3096 421 exsv = TOPs;
a0d0e21e 422 }
06bf62c7 423
c5df3096
Z		 424 if (SvROK(exsv) || (pv = SvPV_const(exsv, len), len)) {
425 /* well-formed exception supplied */
426 }
427 else if (SvROK(ERRSV)) {
428 exsv = ERRSV;
429 }
430 else if (SvPOK(ERRSV) && SvCUR(ERRSV)) {
431 exsv = sv_mortalcopy(ERRSV);
432 sv_catpvs(exsv, "\t...caught");
433 }
434 else {
435 exsv = newSVpvs_flags("Warning: something's wrong", SVs_TEMP);
436 }
437 warn_sv(exsv);
a0d0e21e
LW		 438 RETSETYES;
439}
440
441PP(pp_die)
442{
97aff369 443 dVAR; dSP; dMARK;
c5df3096
Z		 444 SV *exsv;
445 const char *pv;
06bf62c7 446 STRLEN len;
96e176bf
CL		 447#ifdef VMS
448 VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
449#endif
a0d0e21e
LW		 450 if (SP - MARK != 1) {
451 dTARGET;
3280af22 452 do_join(TARG, &PL_sv_no, MARK, SP);
c5df3096 453 exsv = TARG;
a0d0e21e
LW		 454 SP = MARK + 1;
455 }
456 else {
c5df3096 457 exsv = TOPs;
a0d0e21e 458 }
c5df3096
Z		 459
460 if (SvROK(exsv) || (pv = SvPV_const(exsv, len), len)) {
461 /* well-formed exception supplied */
462 }
463 else if (SvROK(ERRSV)) {
464 exsv = ERRSV;
465 if (sv_isobject(exsv)) {
466 HV * const stash = SvSTASH(SvRV(exsv));
467 GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
468 if (gv) {
469 SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
470 SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
471 EXTEND(SP, 3);
472 PUSHMARK(SP);
473 PUSHs(exsv);
474 PUSHs(file);
475 PUSHs(line);
476 PUTBACK;
477 call_sv(MUTABLE_SV(GvCV(gv)),
478 G_SCALAR|G_EVAL|G_KEEPERR);
479 exsv = sv_mortalcopy(*PL_stack_sp--);
05423cc9 480 }
4e6ea2c3 481 }
a0d0e21e 482 }
c5df3096
Z		 483 else if (SvPOK(ERRSV) && SvCUR(ERRSV)) {
484 exsv = sv_mortalcopy(ERRSV);
485 sv_catpvs(exsv, "\t...propagated");
486 }
487 else {
488 exsv = newSVpvs_flags("Died", SVs_TEMP);
489 }
9fed9930 490 return die_sv(exsv);
a0d0e21e
LW		 491}
492
493/* I/O. */
494
495PP(pp_open)
496{
27da23d5 497 dVAR; dSP;
a567e93b
NIS		 498 dMARK; dORIGMARK;
499 dTARGET;
a0d0e21e 500 SV *sv;
5b468f54 501 IO *io;
5c144d81 502 const char *tmps;
a0d0e21e 503 STRLEN len;
a567e93b 504 bool ok;
a0d0e21e 505
159b6efe 506 GV * const gv = MUTABLE_GV(*++MARK);
c4420975 507
13be902c 508 if (!isGV(gv) && !(SvTYPE(gv) == SVt_PVLV && isGV_with_GP(gv)))
cea2e8a9 509 DIE(aTHX_ PL_no_usym, "filehandle");
abc718f2 510
a79db61d
AL		 511 if ((io = GvIOp(gv))) {
512 MAGIC *mg;
36477c24 513 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
853846ea 514
a2a5de95 515 if (IoDIRP(io))
d1d15184
NC		 516 Perl_ck_warner_d(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
517 "Opening dirhandle %s also as a file",
518 GvENAME(gv));
abc718f2 519
ad64d0ec 520 mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
c4420975
AL		 521 if (mg) {
522 /* Method's args are same as ours ... */
523 /* ... except handle is replaced by the object */
ad64d0ec 524 *MARK-- = SvTIED_obj(MUTABLE_SV(io), mg);
c4420975
AL		 525 PUSHMARK(MARK);
526 PUTBACK;
d343c3ef 527 ENTER_with_name("call_OPEN");
c4420975 528 call_method("OPEN", G_SCALAR);
d343c3ef 529 LEAVE_with_name("call_OPEN");
5616b3e5 530 return NORMAL;
c4420975 531 }
4592e6ca
NIS		 532 }
533
a567e93b
NIS		 534 if (MARK < SP) {
535 sv = *++MARK;
536 }
537 else {
35a08ec7 538 sv = GvSVn(gv);
a567e93b
NIS		 539 }
540
5c144d81 541 tmps = SvPV_const(sv, len);
4608196e 542 ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, NULL, MARK+1, (SP-MARK));
a567e93b
NIS		 543 SP = ORIGMARK;
544 if (ok)
3280af22
NIS		 545 PUSHi( (I32)PL_forkprocess );
546 else if (PL_forkprocess == 0) /* we are a new child */
a0d0e21e
LW		 547 PUSHi(0);
548 else
549 RETPUSHUNDEF;
550 RETURN;
551}
552
f4adce6b 553/* These are private to this function, which is private to this file.
74f0b550
NC		 554 Use 0x04 rather than the next available bit, to help the compiler if the
555 architecture can generate more efficient instructions. */
556#define MORTALIZE_NOT_NEEDED 0x04
f4adce6b 557#define TIED_HANDLE_ARGC_SHIFT 3
74f0b550 558
ebc1fde6
NC		 559static OP *
560S_tied_handle_method(pTHX_ const char *const methname, SV **sp,
f4adce6b 561 IO *const io, MAGIC *const mg, const U32 flags, ...)
ebc1fde6 562{
f4adce6b
NC		 563 U32 argc = flags >> TIED_HANDLE_ARGC_SHIFT;
564
ebc1fde6
NC		 565 PERL_ARGS_ASSERT_TIED_HANDLE_METHOD;
566
f4adce6b 567 /* Ensure that our flag bits do not overlap. */
74f0b550 568 assert((MORTALIZE_NOT_NEEDED & G_WANT) == 0);
f4adce6b 569 assert((G_WANT >> TIED_HANDLE_ARGC_SHIFT) == 0);
74f0b550 570
ebc1fde6
NC		 571 PUSHMARK(sp);
572 PUSHs(SvTIED_obj(MUTABLE_SV(io), mg));
bc0c81ca 573 if (argc) {
74f0b550 574 const U32 mortalize_not_needed = flags & MORTALIZE_NOT_NEEDED;
bc0c81ca 575 va_list args;
f4adce6b 576 va_start(args, flags);
bc0c81ca
NC		 577 do {
578 SV *const arg = va_arg(args, SV *);
74f0b550
NC		 579 if(mortalize_not_needed)
580 PUSHs(arg);
581 else
582 mPUSHs(arg);
bc0c81ca
NC		 583 } while (--argc);
584 va_end(args);
585 }
586
ebc1fde6
NC		 587 PUTBACK;
588 ENTER_with_name("call_tied_handle_method");
74f0b550 589 call_method(methname, flags & G_WANT);
ebc1fde6
NC		 590 LEAVE_with_name("call_tied_handle_method");
591 return NORMAL;
592}
593
bc0c81ca 594#define tied_handle_method(a,b,c,d) \
f4adce6b 595 S_tied_handle_method(aTHX_ a,b,c,d,G_SCALAR)
bc0c81ca 596#define tied_handle_method1(a,b,c,d,e) \
f4adce6b 597 S_tied_handle_method(aTHX_ a,b,c,d,G_SCALAR | (1 << TIED_HANDLE_ARGC_SHIFT),e)
bc0c81ca 598#define tied_handle_method2(a,b,c,d,e,f) \
f4adce6b 599 S_tied_handle_method(aTHX_ a,b,c,d,G_SCALAR | (2 << TIED_HANDLE_ARGC_SHIFT), e,f)
bc0c81ca 600
a0d0e21e
LW		 601PP(pp_close)
602{
27da23d5 603 dVAR; dSP;
159b6efe 604 GV * const gv = (MAXARG == 0) ? PL_defoutgv : MUTABLE_GV(POPs);
1d603a67 605
2addaaf3
NC		 606 if (MAXARG == 0)
607 EXTEND(SP, 1);
608
a79db61d
AL		 609 if (gv) {
610 IO * const io = GvIO(gv);
611 if (io) {
ad64d0ec 612 MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 613 if (mg) {
ebc1fde6 614 return tied_handle_method("CLOSE", SP, io, mg);
a79db61d
AL		 615 }
616 }
1d603a67 617 }
54310121 618 PUSHs(boolSV(do_close(gv, TRUE)));
a0d0e21e
LW		 619 RETURN;
620}
621
622PP(pp_pipe_op)
623{
a0d0e21e 624#ifdef HAS_PIPE
97aff369 625 dVAR;
9cad6237 626 dSP;
a0d0e21e
LW		 627 register IO *rstio;
628 register IO *wstio;
629 int fd[2];
630
159b6efe
NC		 631 GV * const wgv = MUTABLE_GV(POPs);
632 GV * const rgv = MUTABLE_GV(POPs);
a0d0e21e
LW		 633
634 if (!rgv || !wgv)
635 goto badexit;
636
6e592b3a 637 if (!isGV_with_GP(rgv) || !isGV_with_GP(wgv))
cea2e8a9 638 DIE(aTHX_ PL_no_usym, "filehandle");
a0d0e21e
LW		 639 rstio = GvIOn(rgv);
640 wstio = GvIOn(wgv);
641
642 if (IoIFP(rstio))
643 do_close(rgv, FALSE);
644 if (IoIFP(wstio))
645 do_close(wgv, FALSE);
646
6ad3d225 647 if (PerlProc_pipe(fd) < 0)
a0d0e21e
LW		 648 goto badexit;
649
460c8493
IZ		 650 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
651 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
b5ac89c3 652 IoOFP(rstio) = IoIFP(rstio);
a0d0e21e 653 IoIFP(wstio) = IoOFP(wstio);
50952442
JH		 654 IoTYPE(rstio) = IoTYPE_RDONLY;
655 IoTYPE(wstio) = IoTYPE_WRONLY;
a0d0e21e
LW		 656
657 if (!IoIFP(rstio) || !IoOFP(wstio)) {
a79db61d
AL		 658 if (IoIFP(rstio))
659 PerlIO_close(IoIFP(rstio));
660 else
661 PerlLIO_close(fd[0]);
662 if (IoOFP(wstio))
663 PerlIO_close(IoOFP(wstio));
664 else
665 PerlLIO_close(fd[1]);
a0d0e21e
LW		 666 goto badexit;
667 }
4771b018
GS		 668#if defined(HAS_FCNTL) && defined(F_SETFD)
669 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
670 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
671#endif
a0d0e21e
LW		 672 RETPUSHYES;
673
674badexit:
675 RETPUSHUNDEF;
676#else
cea2e8a9 677 DIE(aTHX_ PL_no_func, "pipe");
a0d0e21e
LW		 678#endif
679}
680
681PP(pp_fileno)
682{
27da23d5 683 dVAR; dSP; dTARGET;
a0d0e21e
LW		 684 GV *gv;
685 IO *io;
760ac839 686 PerlIO *fp;
4592e6ca
NIS		 687 MAGIC *mg;
688
a0d0e21e
LW		 689 if (MAXARG < 1)
690 RETPUSHUNDEF;
159b6efe 691 gv = MUTABLE_GV(POPs);
4592e6ca 692
5b468f54 693 if (gv && (io = GvIO(gv))
ad64d0ec 694 && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar)))
5b468f54 695 {
ebc1fde6 696 return tied_handle_method("FILENO", SP, io, mg);
4592e6ca
NIS		 697 }
698
c289d2f7
JH		 699 if (!gv || !(io = GvIO(gv)) || !(fp = IoIFP(io))) {
700 /* Can't do this because people seem to do things like
701 defined(fileno($foo)) to check whether $foo is a valid fh.
702 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
831e4cc3 703 report_evil_fh(gv);
c289d2f7 704 */
a0d0e21e 705 RETPUSHUNDEF;
c289d2f7
JH		 706 }
707
760ac839 708 PUSHi(PerlIO_fileno(fp));
a0d0e21e
LW		 709 RETURN;
710}
711
712PP(pp_umask)
713{
97aff369 714 dVAR;
27da23d5 715 dSP;
d7e492a4 716#ifdef HAS_UMASK
27da23d5 717 dTARGET;
761237fe 718 Mode_t anum;
a0d0e21e 719
a0d0e21e 720 if (MAXARG < 1) {
b0b546b3
GA		 721 anum = PerlLIO_umask(022);
722 /* setting it to 022 between the two calls to umask avoids
723 * to have a window where the umask is set to 0 -- meaning
724 * that another thread could create world-writeable files. */
725 if (anum != 022)
726 (void)PerlLIO_umask(anum);
a0d0e21e
LW		 727 }
728 else
6ad3d225 729 anum = PerlLIO_umask(POPi);
a0d0e21e
LW		 730 TAINT_PROPER("umask");
731 XPUSHi(anum);
732#else
a0288114 733 /* Only DIE if trying to restrict permissions on "user" (self).
eec2d3df
GS		 734 * Otherwise it's harmless and more useful to just return undef
735 * since 'group' and 'other' concepts probably don't exist here. */
736 if (MAXARG >= 1 && (POPi & 0700))
cea2e8a9 737 DIE(aTHX_ "umask not implemented");
6b88bc9c 738 XPUSHs(&PL_sv_undef);
a0d0e21e
LW		 739#endif
740 RETURN;
741}
742
743PP(pp_binmode)
744{
27da23d5 745 dVAR; dSP;
a0d0e21e
LW		 746 GV *gv;
747 IO *io;
760ac839 748 PerlIO *fp;
a0714e2c 749 SV *discp = NULL;
a0d0e21e
LW		 750
751 if (MAXARG < 1)
752 RETPUSHUNDEF;
60382766 753 if (MAXARG > 1) {
16fe6d59 754 discp = POPs;
60382766 755 }
a0d0e21e 756
159b6efe 757 gv = MUTABLE_GV(POPs);
4592e6ca 758
a79db61d 759 if (gv && (io = GvIO(gv))) {
ad64d0ec 760 MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 761 if (mg) {
bc0c81ca
NC		 762 /* This takes advantage of the implementation of the varargs
763 function, which I don't think that the optimiser will be able to
764 figure out. Although, as it's a static function, in theory it
765 could. */
74f0b550 766 return S_tied_handle_method(aTHX_ "BINMODE", SP, io, mg,
f4adce6b
NC		 767 G_SCALAR|MORTALIZE_NOT_NEEDED
768 | (discp
769 ? (1 << TIED_HANDLE_ARGC_SHIFT) : 0),
770 discp);
a79db61d 771 }
4592e6ca 772 }
a0d0e21e 773
50f846a7 774 if (!(io = GvIO(gv)) || !(fp = IoIFP(io))) {
c289d2f7 775 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
831e4cc3 776 report_evil_fh(gv);
b5fe5ca2 777 SETERRNO(EBADF,RMS_IFI);
50f846a7
SC		 778 RETPUSHUNDEF;
779 }
a0d0e21e 780
40d98b49 781 PUTBACK;
f0a78170 782 {
a79b25b7
VP		 783 STRLEN len = 0;
784 const char *d = NULL;
785 int mode;
786 if (discp)
787 d = SvPV_const(discp, len);
788 mode = mode_from_discipline(d, len);
f0a78170
NC		 789 if (PerlIO_binmode(aTHX_ fp, IoTYPE(io), mode, d)) {
790 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
791 if (!PerlIO_binmode(aTHX_ IoOFP(io), IoTYPE(io), mode, d)) {
792 SPAGAIN;
793 RETPUSHUNDEF;
794 }
795 }
796 SPAGAIN;
797 RETPUSHYES;
798 }
799 else {
800 SPAGAIN;
801 RETPUSHUNDEF;
38af81ff 802 }
40d98b49 803 }
a0d0e21e
LW		 804}
805
806PP(pp_tie)
807{
27da23d5 808 dVAR; dSP; dMARK;
a0d0e21e 809 HV* stash;
07822e36 810 GV *gv = NULL;
a0d0e21e 811 SV *sv;
1df70142 812 const I32 markoff = MARK - PL_stack_base;
e1ec3a88 813 const char *methname;
14befaf4 814 int how = PERL_MAGIC_tied;
e336de0d 815 U32 items;
c4420975 816 SV *varsv = *++MARK;
a0d0e21e 817
6b05c17a
NIS		 818 switch(SvTYPE(varsv)) {
819 case SVt_PVHV:
820 methname = "TIEHASH";
85fbaab2 821 HvEITER_set(MUTABLE_HV(varsv), 0);
6b05c17a
NIS		 822 break;
823 case SVt_PVAV:
824 methname = "TIEARRAY";
825 break;
826 case SVt_PVGV:
13be902c 827 case SVt_PVLV:
7850f4d6 828 if (isGV_with_GP(varsv)) {
7c7df812
FC		 829 if (SvFAKE(varsv) && !(GvFLAGS(varsv) & GVf_TIEWARNED)) {
830 deprecate("tie on a handle without *");
831 GvFLAGS(varsv) |= GVf_TIEWARNED;
832 }
6e592b3a
BM		 833 methname = "TIEHANDLE";
834 how = PERL_MAGIC_tiedscalar;
835 /* For tied filehandles, we apply tiedscalar magic to the IO
836 slot of the GP rather than the GV itself. AMS 20010812 */
837 if (!GvIOp(varsv))
838 GvIOp(varsv) = newIO();
ad64d0ec 839 varsv = MUTABLE_SV(GvIOp(varsv));
6e592b3a
BM		 840 break;
841 }
842 /* FALL THROUGH */
6b05c17a
NIS		 843 default:
844 methname = "TIESCALAR";
14befaf4 845 how = PERL_MAGIC_tiedscalar;
6b05c17a
NIS		 846 break;
847 }
e336de0d 848 items = SP - MARK++;
a91d1d42 849 if (sv_isobject(*MARK)) { /* Calls GET magic. */
d343c3ef 850 ENTER_with_name("call_TIE");
e788e7d3 851 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 852 PUSHMARK(SP);
eb160463 853 EXTEND(SP,(I32)items);
e336de0d
GS		 854 while (items--)
855 PUSHs(*MARK++);
856 PUTBACK;
864dbfa3 857 call_method(methname, G_SCALAR);
301e8125 858 }
6b05c17a 859 else {
086d2913
NC		 860 /* Can't use call_method here, else this: fileno FOO; tie @a, "FOO"
861 * will attempt to invoke IO::File::TIEARRAY, with (best case) the
862 * wrong error message, and worse case, supreme action at a distance.
863 * (Sorry obfuscation writers. You're not going to be given this one.)
6b05c17a 864 */
a91d1d42
VP		 865 STRLEN len;
866 const char *name = SvPV_nomg_const(*MARK, len);
867 stash = gv_stashpvn(name, len, 0);
6b05c17a 868 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
35c1215d 869 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
a91d1d42 870 methname, SVfARG(SvOK(*MARK) ? *MARK : &PL_sv_no));
6b05c17a 871 }
d343c3ef 872 ENTER_with_name("call_TIE");
e788e7d3 873 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 874 PUSHMARK(SP);
eb160463 875 EXTEND(SP,(I32)items);
e336de0d
GS		 876 while (items--)
877 PUSHs(*MARK++);
878 PUTBACK;
ad64d0ec 879 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
6b05c17a 880 }
a0d0e21e
LW		 881 SPAGAIN;
882
883 sv = TOPs;
d3acc0f7 884 POPSTACK;
a0d0e21e 885 if (sv_isobject(sv)) {
33c27489 886 sv_unmagic(varsv, how);
ae21d580 887 /* Croak if a self-tie on an aggregate is attempted. */
b881518d 888 if (varsv == SvRV(sv) &&
d87ebaca
YST		 889 (SvTYPE(varsv) == SVt_PVAV ||
890 SvTYPE(varsv) == SVt_PVHV))
ae21d580
JH		 891 Perl_croak(aTHX_
892 "Self-ties of arrays and hashes are not supported");
a0714e2c 893 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
a0d0e21e 894 }
d343c3ef 895 LEAVE_with_name("call_TIE");
3280af22 896 SP = PL_stack_base + markoff;
a0d0e21e
LW		 897 PUSHs(sv);
898 RETURN;
899}
900
901PP(pp_untie)
902{
27da23d5 903 dVAR; dSP;
5b468f54 904 MAGIC *mg;
33c27489 905 SV *sv = POPs;
1df70142 906 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 907 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
55497cff 908
7c7df812
FC		 909 if (isGV_with_GP(sv)) {
910 if (SvFAKE(sv) && !(GvFLAGS(sv) & GVf_TIEWARNED)) {
911 deprecate("untie on a handle without *");
912 GvFLAGS(sv) |= GVf_TIEWARNED;
913 }
914 if (!(sv = MUTABLE_SV(GvIOp(sv))))
5b468f54 915 RETPUSHYES;
7c7df812 916 }
5b468f54 917
65eba18f 918 if ((mg = SvTIED_mg(sv, how))) {
1b6737cc 919 SV * const obj = SvRV(SvTIED_obj(sv, mg));
fa2b88e0 920 if (obj) {
c4420975 921 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
0bd48802 922 CV *cv;
c4420975 923 if (gv && isGV(gv) && (cv = GvCV(gv))) {
fa2b88e0 924 PUSHMARK(SP);
c33ef3ac 925 PUSHs(SvTIED_obj(MUTABLE_SV(gv), mg));
6e449a3a 926 mXPUSHi(SvREFCNT(obj) - 1);
fa2b88e0 927 PUTBACK;
d343c3ef 928 ENTER_with_name("call_UNTIE");
ad64d0ec 929 call_sv(MUTABLE_SV(cv), G_VOID);
d343c3ef 930 LEAVE_with_name("call_UNTIE");
fa2b88e0
JS		 931 SPAGAIN;
932 }
a2a5de95
NC		 933 else if (mg && SvREFCNT(obj) > 1) {
934 Perl_ck_warner(aTHX_ packWARN(WARN_UNTIE),
935 "untie attempted while %"UVuf" inner references still exist",
936 (UV)SvREFCNT(obj) - 1 ) ;
c4420975 937 }
cbdc8872 938 }
939 }
38193a09 940 sv_unmagic(sv, how) ;
55497cff 941 RETPUSHYES;
a0d0e21e
LW		 942}
943
c07a80fd 944PP(pp_tied)
945{
97aff369 946 dVAR;
39644a26 947 dSP;
1b6737cc 948 const MAGIC *mg;
33c27489 949 SV *sv = POPs;
1df70142 950 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 951 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
5b468f54 952
7c7df812
FC		 953 if (isGV_with_GP(sv)) {
954 if (SvFAKE(sv) && !(GvFLAGS(sv) & GVf_TIEWARNED)) {
955 deprecate("tied on a handle without *");
956 GvFLAGS(sv) |= GVf_TIEWARNED;
957 }
958 if (!(sv = MUTABLE_SV(GvIOp(sv))))
5b468f54 959 RETPUSHUNDEF;
7c7df812 960 }
c07a80fd 961
155aba94 962 if ((mg = SvTIED_mg(sv, how))) {
33c27489
GS		 963 SV *osv = SvTIED_obj(sv, mg);
964 if (osv == mg->mg_obj)
965 osv = sv_mortalcopy(osv);
966 PUSHs(osv);
967 RETURN;
c07a80fd 968 }
c07a80fd 969 RETPUSHUNDEF;
970}
971
a0d0e21e
LW		 972PP(pp_dbmopen)
973{
27da23d5 974 dVAR; dSP;
a0d0e21e
LW		 975 dPOPPOPssrl;
976 HV* stash;
07822e36 977 GV *gv = NULL;
a0d0e21e 978
85fbaab2 979 HV * const hv = MUTABLE_HV(POPs);
84bafc02 980 SV * const sv = newSVpvs_flags("AnyDBM_File", SVs_TEMP);
da51bb9b 981 stash = gv_stashsv(sv, 0);
8ebc5c01 982 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
a0d0e21e 983 PUTBACK;
864dbfa3 984 require_pv("AnyDBM_File.pm");
a0d0e21e 985 SPAGAIN;
eff494dd 986 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH")))
cea2e8a9 987 DIE(aTHX_ "No dbm on this machine");
a0d0e21e
LW		 988 }
989
57d3b86d 990 ENTER;
924508f0 991 PUSHMARK(SP);
6b05c17a 992
924508f0 993 EXTEND(SP, 5);
a0d0e21e
LW		 994 PUSHs(sv);
995 PUSHs(left);
996 if (SvIV(right))
6e449a3a 997 mPUSHu(O_RDWR|O_CREAT);
a0d0e21e 998 else
6e449a3a 999 mPUSHu(O_RDWR);
a0d0e21e 1000 PUSHs(right);
57d3b86d 1001 PUTBACK;
ad64d0ec 1002 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
a0d0e21e
LW		 1003 SPAGAIN;
1004
1005 if (!sv_isobject(TOPs)) {
924508f0
GS		 1006 SP--;
1007 PUSHMARK(SP);
a0d0e21e
LW		 1008 PUSHs(sv);
1009 PUSHs(left);
6e449a3a 1010 mPUSHu(O_RDONLY);
a0d0e21e 1011 PUSHs(right);
a0d0e21e 1012 PUTBACK;
ad64d0ec 1013 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
a0d0e21e
LW		 1014 SPAGAIN;
1015 }
1016
6b05c17a 1017 if (sv_isobject(TOPs)) {
ad64d0ec
NC		 1018 sv_unmagic(MUTABLE_SV(hv), PERL_MAGIC_tied);
1019 sv_magic(MUTABLE_SV(hv), TOPs, PERL_MAGIC_tied, NULL, 0);
6b05c17a 1020 }
a0d0e21e
LW		 1021 LEAVE;
1022 RETURN;
1023}
1024
a0d0e21e
LW		 1025PP(pp_sselect)
1026{
a0d0e21e 1027#ifdef HAS_SELECT
97aff369 1028 dVAR; dSP; dTARGET;
a0d0e21e
LW		 1029 register I32 i;
1030 register I32 j;
1031 register char *s;
1032 register SV *sv;
65202027 1033 NV value;
a0d0e21e
LW		 1034 I32 maxlen = 0;
1035 I32 nfound;
1036 struct timeval timebuf;
1037 struct timeval *tbuf = &timebuf;
1038 I32 growsize;
1039 char *fd_sets[4];
1040#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1041 I32 masksize;
1042 I32 offset;
1043 I32 k;
1044
1045# if BYTEORDER & 0xf0000
1046# define ORDERBYTE (0x88888888 - BYTEORDER)
1047# else
1048# define ORDERBYTE (0x4444 - BYTEORDER)
1049# endif
1050
1051#endif
1052
1053 SP -= 4;
1054 for (i = 1; i <= 3; i++) {
c4420975 1055 SV * const sv = SP[i];
15547071
GA		 1056 if (!SvOK(sv))
1057 continue;
1058 if (SvREADONLY(sv)) {
729c079f
NC		 1059 if (SvIsCOW(sv))
1060 sv_force_normal_flags(sv, 0);
15547071 1061 if (SvREADONLY(sv) && !(SvPOK(sv) && SvCUR(sv) == 0))
6ad8f254 1062 Perl_croak_no_modify(aTHX);
729c079f 1063 }
4ef2275c 1064 if (!SvPOK(sv)) {
a2a5de95 1065 Perl_ck_warner(aTHX_ packWARN(WARN_MISC), "Non-string passed as bitmask");
4ef2275c
GA		 1066 SvPV_force_nolen(sv); /* force string conversion */
1067 }
729c079f 1068 j = SvCUR(sv);
a0d0e21e
LW		 1069 if (maxlen < j)
1070 maxlen = j;
1071 }
1072
5ff3f7a4 1073/* little endians can use vecs directly */
e366b469 1074#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
5ff3f7a4 1075# ifdef NFDBITS
a0d0e21e 1076
5ff3f7a4
GS		 1077# ifndef NBBY
1078# define NBBY 8
1079# endif
a0d0e21e
LW		 1080
1081 masksize = NFDBITS / NBBY;
5ff3f7a4 1082# else
a0d0e21e 1083 masksize = sizeof(long); /* documented int, everyone seems to use long */
5ff3f7a4 1084# endif
a0d0e21e
LW		 1085 Zero(&fd_sets[0], 4, char*);
1086#endif
1087
ad517f75
MHM		 1088# if SELECT_MIN_BITS == 1
1089 growsize = sizeof(fd_set);
1090# else
1091# if defined(__GLIBC__) && defined(__FD_SETSIZE)
1092# undef SELECT_MIN_BITS
1093# define SELECT_MIN_BITS __FD_SETSIZE
1094# endif
e366b469
PG		 1095 /* If SELECT_MIN_BITS is greater than one we most probably will want
1096 * to align the sizes with SELECT_MIN_BITS/8 because for example
1097 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
1098 * UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
1099 * on (sets/tests/clears bits) is 32 bits. */
1100 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
e366b469
PG		 1101# endif
1102
a0d0e21e
LW		 1103 sv = SP[4];
1104 if (SvOK(sv)) {
1105 value = SvNV(sv);
1106 if (value < 0.0)
1107 value = 0.0;
1108 timebuf.tv_sec = (long)value;
65202027 1109 value -= (NV)timebuf.tv_sec;
a0d0e21e
LW		 1110 timebuf.tv_usec = (long)(value * 1000000.0);
1111 }
1112 else
4608196e 1113 tbuf = NULL;
a0d0e21e
LW		 1114
1115 for (i = 1; i <= 3; i++) {
1116 sv = SP[i];
15547071 1117 if (!SvOK(sv) || SvCUR(sv) == 0) {
a0d0e21e
LW		 1118 fd_sets[i] = 0;
1119 continue;
1120 }
4ef2275c 1121 assert(SvPOK(sv));
a0d0e21e
LW		 1122 j = SvLEN(sv);
1123 if (j < growsize) {
1124 Sv_Grow(sv, growsize);
a0d0e21e 1125 }
c07a80fd 1126 j = SvCUR(sv);
1127 s = SvPVX(sv) + j;
1128 while (++j <= growsize) {
1129 *s++ = '\0';
1130 }
1131
a0d0e21e
LW		 1132#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1133 s = SvPVX(sv);
a02a5408 1134 Newx(fd_sets[i], growsize, char);
a0d0e21e
LW		 1135 for (offset = 0; offset < growsize; offset += masksize) {
1136 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1137 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1138 }
1139#else
1140 fd_sets[i] = SvPVX(sv);
1141#endif
1142 }
1143
dc4c69d9
JH		 1144#ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1145 /* Can't make just the (void*) conditional because that would be
1146 * cpp #if within cpp macro, and not all compilers like that. */
1147 nfound = PerlSock_select(
1148 maxlen * 8,
1149 (Select_fd_set_t) fd_sets[1],
1150 (Select_fd_set_t) fd_sets[2],
1151 (Select_fd_set_t) fd_sets[3],
1152 (void*) tbuf); /* Workaround for compiler bug. */
1153#else
6ad3d225 1154 nfound = PerlSock_select(
a0d0e21e
LW		 1155 maxlen * 8,
1156 (Select_fd_set_t) fd_sets[1],
1157 (Select_fd_set_t) fd_sets[2],
1158 (Select_fd_set_t) fd_sets[3],
1159 tbuf);
dc4c69d9 1160#endif
a0d0e21e
LW		 1161 for (i = 1; i <= 3; i++) {
1162 if (fd_sets[i]) {
1163 sv = SP[i];
1164#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1165 s = SvPVX(sv);
1166 for (offset = 0; offset < growsize; offset += masksize) {
1167 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1168 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1169 }
1170 Safefree(fd_sets[i]);
1171#endif
1172 SvSETMAGIC(sv);
1173 }
1174 }
1175
4189264e 1176 PUSHi(nfound);
a0d0e21e 1177 if (GIMME == G_ARRAY && tbuf) {
65202027
DS		 1178 value = (NV)(timebuf.tv_sec) +
1179 (NV)(timebuf.tv_usec) / 1000000.0;
6e449a3a 1180 mPUSHn(value);
a0d0e21e
LW		 1181 }
1182 RETURN;
1183#else
cea2e8a9 1184 DIE(aTHX_ "select not implemented");
a0d0e21e
LW		 1185#endif
1186}
1187
8226a3d7
NC		 1188/*
1189=for apidoc setdefout
1190
1191Sets PL_defoutgv, the default file handle for output, to the passed in
1192typeglob. As PL_defoutgv "owns" a reference on its typeglob, the reference
1193count of the passed in typeglob is increased by one, and the reference count
1194of the typeglob that PL_defoutgv points to is decreased by one.
1195
1196=cut
1197*/
1198
4633a7c4 1199void
864dbfa3 1200Perl_setdefout(pTHX_ GV *gv)
4633a7c4 1201{
97aff369 1202 dVAR;
b37c2d43 1203 SvREFCNT_inc_simple_void(gv);
ef8d46e8 1204 SvREFCNT_dec(PL_defoutgv);
3280af22 1205 PL_defoutgv = gv;
4633a7c4
LW		 1206}
1207
a0d0e21e
LW		 1208PP(pp_select)
1209{
97aff369 1210 dVAR; dSP; dTARGET;
4633a7c4 1211 HV *hv;
159b6efe 1212 GV * const newdefout = (PL_op->op_private > 0) ? (MUTABLE_GV(POPs)) : NULL;
099be4f1 1213 GV * egv = GvEGVx(PL_defoutgv);
4633a7c4 1214
4633a7c4 1215 if (!egv)
3280af22 1216 egv = PL_defoutgv;
099be4f1 1217 hv = isGV_with_GP(egv) ? GvSTASH(egv) : NULL;
4633a7c4 1218 if (! hv)
3280af22 1219 XPUSHs(&PL_sv_undef);
4633a7c4 1220 else {
c4420975 1221 GV * const * const gvp = (GV**)hv_fetch(hv, GvNAME(egv), GvNAMELEN(egv), FALSE);
f86702cc 1222 if (gvp && *gvp == egv) {
bd61b366 1223 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
f86702cc 1224 XPUSHTARG;
1225 }
1226 else {
ad64d0ec 1227 mXPUSHs(newRV(MUTABLE_SV(egv)));
f86702cc 1228 }
4633a7c4
LW		 1229 }
1230
1231 if (newdefout) {
ded8aa31
GS		 1232 if (!GvIO(newdefout))
1233 gv_IOadd(newdefout);
4633a7c4
LW		 1234 setdefout(newdefout);
1235 }
1236
a0d0e21e
LW		 1237 RETURN;
1238}
1239
1240PP(pp_getc)
1241{
27da23d5 1242 dVAR; dSP; dTARGET;
90133b69 1243 IO *io = NULL;
159b6efe 1244 GV * const gv = (MAXARG==0) ? PL_stdingv : MUTABLE_GV(POPs);
2ae324a7 1245
ac3697cd
NC		 1246 if (MAXARG == 0)
1247 EXTEND(SP, 1);
1248
a79db61d 1249 if (gv && (io = GvIO(gv))) {
ad64d0ec 1250 MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1251 if (mg) {
0240605e 1252 const U32 gimme = GIMME_V;
f4adce6b 1253 S_tied_handle_method(aTHX_ "GETC", SP, io, mg, gimme);
0240605e
NC		 1254 if (gimme == G_SCALAR) {
1255 SPAGAIN;
a79db61d 1256 SvSetMagicSV_nosteal(TARG, TOPs);
0240605e
NC		 1257 }
1258 return NORMAL;
a79db61d 1259 }
2ae324a7 1260 }
90133b69 1261 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
041457d9
DM		 1262 if ((!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
1263 && ckWARN2(WARN_UNOPENED,WARN_CLOSED))
831e4cc3 1264 report_evil_fh(gv);
b5fe5ca2 1265 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1266 RETPUSHUNDEF;
90133b69 1267 }
bbce6d69 1268 TAINT;
76f68e9b 1269 sv_setpvs(TARG, " ");
9bc64814 1270 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
7d59b7e4
NIS		 1271 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1272 /* Find out how many bytes the char needs */
aa07b2f6 1273 Size_t len = UTF8SKIP(SvPVX_const(TARG));
7d59b7e4
NIS		 1274 if (len > 1) {
1275 SvGROW(TARG,len+1);
1276 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1277 SvCUR_set(TARG,1+len);
1278 }
1279 SvUTF8_on(TARG);
1280 }
a0d0e21e
LW		 1281 PUSHTARG;
1282 RETURN;
1283}
1284
76e3520e 1285STATIC OP *
cea2e8a9 1286S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
a0d0e21e 1287{
27da23d5 1288 dVAR;
c09156bb 1289 register PERL_CONTEXT *cx;
f54cb97a 1290 const I32 gimme = GIMME_V;
a0d0e21e 1291
7918f24d
NC		 1292 PERL_ARGS_ASSERT_DOFORM;
1293
7b190374
NC		 1294 if (cv && CvCLONE(cv))
1295 cv = MUTABLE_CV(sv_2mortal(MUTABLE_SV(cv_clone(cv))));
1296
a0d0e21e
LW		 1297 ENTER;
1298 SAVETMPS;
1299
146174a9 1300 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
10067d9a 1301 PUSHFORMAT(cx, retop);
fd617465
DM		 1302 SAVECOMPPAD();
1303 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), 1);
a0d0e21e 1304
4633a7c4 1305 setdefout(gv); /* locally select filehandle so $% et al work */
a0d0e21e
LW		 1306 return CvSTART(cv);
1307}
1308
1309PP(pp_enterwrite)
1310{
97aff369 1311 dVAR;
39644a26 1312 dSP;
a0d0e21e
LW		 1313 register GV *gv;
1314 register IO *io;
1315 GV *fgv;
07822e36
JH		 1316 CV *cv = NULL;
1317 SV *tmpsv = NULL;
a0d0e21e 1318
2addaaf3 1319 if (MAXARG == 0) {
3280af22 1320 gv = PL_defoutgv;
2addaaf3
NC		 1321 EXTEND(SP, 1);
1322 }
a0d0e21e 1323 else {
159b6efe 1324 gv = MUTABLE_GV(POPs);
a0d0e21e 1325 if (!gv)
3280af22 1326 gv = PL_defoutgv;
a0d0e21e 1327 }
a0d0e21e
LW		 1328 io = GvIO(gv);
1329 if (!io) {
1330 RETPUSHNO;
1331 }
1332 if (IoFMT_GV(io))
1333 fgv = IoFMT_GV(io);
1334 else
1335 fgv = gv;
1336
a79db61d
AL		 1337 if (!fgv)
1338 goto not_a_format_reference;
1339
a0d0e21e 1340 cv = GvFORM(fgv);
a0d0e21e 1341 if (!cv) {
f4a7049d 1342 const char *name;
10edeb5d 1343 tmpsv = sv_newmortal();
f4a7049d
NC		 1344 gv_efullname4(tmpsv, fgv, NULL, FALSE);
1345 name = SvPV_nolen_const(tmpsv);
1346 if (name && *name)
1347 DIE(aTHX_ "Undefined format \"%s\" called", name);
a79db61d
AL		 1348
1349 not_a_format_reference:
cea2e8a9 1350 DIE(aTHX_ "Not a format reference");
a0d0e21e 1351 }
44a8e56a 1352 IoFLAGS(io) &= ~IOf_DIDTOP;
533c011a 1353 return doform(cv,gv,PL_op->op_next);
a0d0e21e
LW		 1354}
1355
1356PP(pp_leavewrite)
1357{
27da23d5 1358 dVAR; dSP;
f9c764c5 1359 GV * const gv = cxstack[cxstack_ix].blk_format.gv;
1b6737cc 1360 register IO * const io = GvIOp(gv);
8b8cacda 1361 PerlIO *ofp;
760ac839 1362 PerlIO *fp;
8772537c
AL		 1363 SV **newsp;
1364 I32 gimme;
c09156bb 1365 register PERL_CONTEXT *cx;
8f89e5a9 1366 OP *retop;
a0d0e21e 1367
8b8cacda
B		 1368 if (!io || !(ofp = IoOFP(io)))
1369 goto forget_top;
1370
760ac839 1371 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1372 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
8b8cacda 1373
3280af22
NIS		 1374 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1375 PL_formtarget != PL_toptarget)
a0d0e21e 1376 {
4633a7c4
LW		 1377 GV *fgv;
1378 CV *cv;
a0d0e21e
LW		 1379 if (!IoTOP_GV(io)) {
1380 GV *topgv;
a0d0e21e
LW		 1381
1382 if (!IoTOP_NAME(io)) {
1b6737cc 1383 SV *topname;
a0d0e21e
LW		 1384 if (!IoFMT_NAME(io))
1385 IoFMT_NAME(io) = savepv(GvNAME(gv));
0bd0581c 1386 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%s_TOP", GvNAME(gv)));
f776e3cd 1387 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
748a9306 1388 if ((topgv && GvFORM(topgv)) ||
fafc274c 1389 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
2e0de35c 1390 IoTOP_NAME(io) = savesvpv(topname);
a0d0e21e 1391 else
89529cee 1392 IoTOP_NAME(io) = savepvs("top");
a0d0e21e 1393 }
f776e3cd 1394 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
a0d0e21e 1395 if (!topgv || !GvFORM(topgv)) {
b929a54b 1396 IoLINES_LEFT(io) = IoPAGE_LEN(io);
a0d0e21e
LW		 1397 goto forget_top;
1398 }
1399 IoTOP_GV(io) = topgv;
1400 }
748a9306
LW		 1401 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1402 I32 lines = IoLINES_LEFT(io);
504618e9 1403 const char *s = SvPVX_const(PL_formtarget);
8e07c86e
AD		 1404 if (lines <= 0) /* Yow, header didn't even fit!!! */
1405 goto forget_top;
748a9306
LW		 1406 while (lines-- > 0) {
1407 s = strchr(s, '\n');
1408 if (!s)
1409 break;
1410 s++;
1411 }
1412 if (s) {
f54cb97a 1413 const STRLEN save = SvCUR(PL_formtarget);
aa07b2f6 1414 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
d75029d0
NIS		 1415 do_print(PL_formtarget, ofp);
1416 SvCUR_set(PL_formtarget, save);
3280af22
NIS		 1417 sv_chop(PL_formtarget, s);
1418 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW		 1419 }
1420 }
a0d0e21e 1421 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
d75029d0 1422 do_print(PL_formfeed, ofp);
a0d0e21e
LW		 1423 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1424 IoPAGE(io)++;
3280af22 1425 PL_formtarget = PL_toptarget;
748a9306 1426 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4
LW		 1427 fgv = IoTOP_GV(io);
1428 if (!fgv)
cea2e8a9 1429 DIE(aTHX_ "bad top format reference");
4633a7c4 1430 cv = GvFORM(fgv);
1df70142
AL		 1431 if (!cv) {
1432 SV * const sv = sv_newmortal();
b464bac0 1433 const char *name;
bd61b366 1434 gv_efullname4(sv, fgv, NULL, FALSE);
e62f0680 1435 name = SvPV_nolen_const(sv);
2dd78f96 1436 if (name && *name)
0e528f24
JH		 1437 DIE(aTHX_ "Undefined top format \"%s\" called", name);
1438 else
1439 DIE(aTHX_ "Undefined top format called");
4633a7c4 1440 }
0e528f24 1441 return doform(cv, gv, PL_op);
a0d0e21e
LW		 1442 }
1443
1444 forget_top:
3280af22 1445 POPBLOCK(cx,PL_curpm);
a0d0e21e 1446 POPFORMAT(cx);
8f89e5a9 1447 retop = cx->blk_sub.retop;
a0d0e21e
LW		 1448 LEAVE;
1449
1450 fp = IoOFP(io);
1451 if (!fp) {
599cee73 1452 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
6e6ef6b2 1453 if (IoIFP(io))
a5390457 1454 report_wrongway_fh(gv, '<');
599cee73 1455 else if (ckWARN(WARN_CLOSED))
831e4cc3 1456 report_evil_fh(gv);
a0d0e21e 1457 }
3280af22 1458 PUSHs(&PL_sv_no);
a0d0e21e
LW		 1459 }
1460 else {
3280af22 1461 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
a2a5de95 1462 Perl_ck_warner(aTHX_ packWARN(WARN_IO), "page overflow");
a0d0e21e 1463 }
d75029d0 1464 if (!do_print(PL_formtarget, fp))
3280af22 1465 PUSHs(&PL_sv_no);
a0d0e21e 1466 else {
3280af22
NIS		 1467 FmLINES(PL_formtarget) = 0;
1468 SvCUR_set(PL_formtarget, 0);
1469 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1470 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1471 (void)PerlIO_flush(fp);
3280af22 1472 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1473 }
1474 }
9cbac4c7 1475 /* bad_ofp: */
3280af22 1476 PL_formtarget = PL_bodytarget;
a0d0e21e 1477 PUTBACK;
29033a8a
SH		 1478 PERL_UNUSED_VAR(newsp);
1479 PERL_UNUSED_VAR(gimme);
8f89e5a9 1480 return retop;
a0d0e21e
LW		 1481}
1482
1483PP(pp_prtf)
1484{
27da23d5 1485 dVAR; dSP; dMARK; dORIGMARK;
a0d0e21e 1486 IO *io;
760ac839 1487 PerlIO *fp;
26db47c4 1488 SV *sv;
a0d0e21e 1489
159b6efe
NC		 1490 GV * const gv
1491 = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv;
46fc3d4c 1492
a79db61d 1493 if (gv && (io = GvIO(gv))) {
ad64d0ec 1494 MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d
AL		 1495 if (mg) {
1496 if (MARK == ORIGMARK) {
1497 MEXTEND(SP, 1);
1498 ++MARK;
1499 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1500 ++SP;
1501 }
1502 PUSHMARK(MARK - 1);
ad64d0ec 1503 *MARK = SvTIED_obj(MUTABLE_SV(io), mg);
a79db61d
AL		 1504 PUTBACK;
1505 ENTER;
1506 call_method("PRINTF", G_SCALAR);
1507 LEAVE;
5616b3e5 1508 return NORMAL;
a79db61d 1509 }
46fc3d4c 1510 }
1511
561b68a9 1512 sv = newSV(0);
a0d0e21e 1513 if (!(io = GvIO(gv))) {
2dd78f96 1514 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
831e4cc3 1515 report_evil_fh(gv);
93189314 1516 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW		 1517 goto just_say_no;
1518 }
1519 else if (!(fp = IoOFP(io))) {
599cee73 1520 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
6e6ef6b2 1521 if (IoIFP(io))
a5390457 1522 report_wrongway_fh(gv, '<');
599cee73 1523 else if (ckWARN(WARN_CLOSED))
831e4cc3 1524 report_evil_fh(gv);
a0d0e21e 1525 }
93189314 1526 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
a0d0e21e
LW		 1527 goto just_say_no;
1528 }
1529 else {
20ee07fb
RGS		 1530 if (SvTAINTED(MARK[1]))
1531 TAINT_PROPER("printf");
a0d0e21e
LW		 1532 do_sprintf(sv, SP - MARK, MARK + 1);
1533 if (!do_print(sv, fp))
1534 goto just_say_no;
1535
1536 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1537 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW		 1538 goto just_say_no;
1539 }
1540 SvREFCNT_dec(sv);
1541 SP = ORIGMARK;
3280af22 1542 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1543 RETURN;
1544
1545 just_say_no:
1546 SvREFCNT_dec(sv);
1547 SP = ORIGMARK;
3280af22 1548 PUSHs(&PL_sv_undef);
a0d0e21e
LW		 1549 RETURN;
1550}
1551
c07a80fd 1552PP(pp_sysopen)
1553{
97aff369 1554 dVAR;
39644a26 1555 dSP;
1df70142
AL		 1556 const int perm = (MAXARG > 3) ? POPi : 0666;
1557 const int mode = POPi;
1b6737cc 1558 SV * const sv = POPs;
159b6efe 1559 GV * const gv = MUTABLE_GV(POPs);
1b6737cc 1560 STRLEN len;
c07a80fd 1561
4592e6ca 1562 /* Need TIEHANDLE method ? */
1b6737cc 1563 const char * const tmps = SvPV_const(sv, len);
e62f0680 1564 /* FIXME? do_open should do const */
4608196e 1565 if (do_open(gv, tmps, len, TRUE, mode, perm, NULL)) {
c07a80fd 1566 IoLINES(GvIOp(gv)) = 0;
3280af22 1567 PUSHs(&PL_sv_yes);
c07a80fd 1568 }
1569 else {
3280af22 1570 PUSHs(&PL_sv_undef);
c07a80fd 1571 }
1572 RETURN;
1573}
1574
a0d0e21e
LW		 1575PP(pp_sysread)
1576{
27da23d5 1577 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e 1578 int offset;
a0d0e21e
LW		 1579 IO *io;
1580 char *buffer;
5b54f415 1581 SSize_t length;
eb5c063a 1582 SSize_t count;
1e422769 1583 Sock_size_t bufsize;
748a9306 1584 SV *bufsv;
a0d0e21e 1585 STRLEN blen;
eb5c063a 1586 int fp_utf8;
1dd30107
NC		 1587 int buffer_utf8;
1588 SV *read_target;
eb5c063a
NIS		 1589 Size_t got = 0;
1590 Size_t wanted;
1d636c13 1591 bool charstart = FALSE;
87330c3c
JH		 1592 STRLEN charskip = 0;
1593 STRLEN skip = 0;
a0d0e21e 1594
159b6efe 1595 GV * const gv = MUTABLE_GV(*++MARK);
5b468f54 1596 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1b6737cc 1597 && gv && (io = GvIO(gv)) )
137443ea 1598 {
ad64d0ec 1599 const MAGIC * mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1b6737cc 1600 if (mg) {
1b6737cc 1601 PUSHMARK(MARK-1);
ad64d0ec 1602 *MARK = SvTIED_obj(MUTABLE_SV(io), mg);
1b6737cc
AL		 1603 ENTER;
1604 call_method("READ", G_SCALAR);
1605 LEAVE;
5616b3e5 1606 return NORMAL;
1b6737cc 1607 }
2ae324a7 1608 }
1609
a0d0e21e
LW		 1610 if (!gv)
1611 goto say_undef;
748a9306 1612 bufsv = *++MARK;
ff68c719 1613 if (! SvOK(bufsv))
76f68e9b 1614 sv_setpvs(bufsv, "");
a0d0e21e 1615 length = SvIVx(*++MARK);
748a9306 1616 SETERRNO(0,0);
a0d0e21e
LW		 1617 if (MARK < SP)
1618 offset = SvIVx(*++MARK);
1619 else
1620 offset = 0;
1621 io = GvIO(gv);
b5fe5ca2
SR		 1622 if (!io || !IoIFP(io)) {
1623 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
831e4cc3 1624 report_evil_fh(gv);
b5fe5ca2 1625 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1626 goto say_undef;
b5fe5ca2 1627 }
0064a8a9 1628 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
7d59b7e4 1629 buffer = SvPVutf8_force(bufsv, blen);
1e54db1a 1630 /* UTF-8 may not have been set if they are all low bytes */
eb5c063a 1631 SvUTF8_on(bufsv);
9b9d7ce8 1632 buffer_utf8 = 0;
7d59b7e4
NIS		 1633 }
1634 else {
1635 buffer = SvPV_force(bufsv, blen);
1dd30107 1636 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
7d59b7e4
NIS		 1637 }
1638 if (length < 0)
1639 DIE(aTHX_ "Negative length");
eb5c063a 1640 wanted = length;
7d59b7e4 1641
d0965105
JH		 1642 charstart = TRUE;
1643 charskip = 0;
87330c3c 1644 skip = 0;
d0965105 1645
a0d0e21e 1646#ifdef HAS_SOCKET
533c011a 1647 if (PL_op->op_type == OP_RECV) {
46fc3d4c 1648 char namebuf[MAXPATHLEN];
17a8c7ba 1649#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
490ab354
JH		 1650 bufsize = sizeof (struct sockaddr_in);
1651#else
46fc3d4c 1652 bufsize = sizeof namebuf;
490ab354 1653#endif
abf95952
IZ		 1654#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1655 if (bufsize >= 256)
1656 bufsize = 255;
1657#endif
eb160463 1658 buffer = SvGROW(bufsv, (STRLEN)(length+1));
bbce6d69 1659 /* 'offset' means 'flags' here */
eb5c063a 1660 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
10edeb5d 1661 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1662 if (count < 0)
a0d0e21e 1663 RETPUSHUNDEF;
8eb023a9
DM		 1664 /* MSG_TRUNC can give oversized count; quietly lose it */
1665 if (count > length)
1666 count = length;
4107cc59
OF		 1667#ifdef EPOC
1668 /* Bogus return without padding */
1669 bufsize = sizeof (struct sockaddr_in);
1670#endif
eb5c063a 1671 SvCUR_set(bufsv, count);
748a9306
LW		 1672 *SvEND(bufsv) = '\0';
1673 (void)SvPOK_only(bufsv);
eb5c063a
NIS		 1674 if (fp_utf8)
1675 SvUTF8_on(bufsv);
748a9306 1676 SvSETMAGIC(bufsv);
aac0dd9a 1677 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1678 if (!(IoFLAGS(io) & IOf_UNTAINT))
1679 SvTAINTED_on(bufsv);
a0d0e21e 1680 SP = ORIGMARK;
46fc3d4c 1681 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW		 1682 PUSHs(TARG);
1683 RETURN;
1684 }
1685#else
911d147d 1686 if (PL_op->op_type == OP_RECV)
cea2e8a9 1687 DIE(aTHX_ PL_no_sock_func, "recv");
a0d0e21e 1688#endif
eb5c063a
NIS		 1689 if (DO_UTF8(bufsv)) {
1690 /* offset adjust in characters not bytes */
1691 blen = sv_len_utf8(bufsv);
7d59b7e4 1692 }
bbce6d69 1693 if (offset < 0) {
eb160463 1694 if (-offset > (int)blen)
cea2e8a9 1695 DIE(aTHX_ "Offset outside string");
bbce6d69 1696 offset += blen;
1697 }
eb5c063a
NIS		 1698 if (DO_UTF8(bufsv)) {
1699 /* convert offset-as-chars to offset-as-bytes */
6960c29a
CH		 1700 if (offset >= (int)blen)
1701 offset += SvCUR(bufsv) - blen;
1702 else
1703 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
eb5c063a
NIS		 1704 }
1705 more_bytes:
cd52b7b2 1706 bufsize = SvCUR(bufsv);
1dd30107
NC		 1707 /* Allocating length + offset + 1 isn't perfect in the case of reading
1708 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1709 unduly.
1710 (should be 2 * length + offset + 1, or possibly something longer if
1711 PL_encoding is true) */
eb160463 1712 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
27da23d5 1713 if (offset > 0 && (Sock_size_t)offset > bufsize) { /* Zero any newly allocated space */
cd52b7b2 1714 Zero(buffer+bufsize, offset-bufsize, char);
1715 }
eb5c063a 1716 buffer = buffer + offset;
1dd30107
NC		 1717 if (!buffer_utf8) {
1718 read_target = bufsv;
1719 } else {
1720 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1721 concatenate it to the current buffer. */
1722
1723 /* Truncate the existing buffer to the start of where we will be
1724 reading to: */
1725 SvCUR_set(bufsv, offset);
1726
1727 read_target = sv_newmortal();
862a34c6 1728 SvUPGRADE(read_target, SVt_PV);
fe2774ed 1729 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1dd30107 1730 }
eb5c063a 1731
533c011a 1732 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1733#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1734 if (IoTYPE(io) == IoTYPE_SOCKET) {
eb5c063a
NIS		 1735 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1736 buffer, length, 0);
a7092146
GS		 1737 }
1738 else
1739#endif
1740 {
eb5c063a
NIS		 1741 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1742 buffer, length);
a7092146 1743 }
a0d0e21e
LW		 1744 }
1745 else
1746#ifdef HAS_SOCKET__bad_code_maybe
50952442 1747 if (IoTYPE(io) == IoTYPE_SOCKET) {
46fc3d4c 1748 char namebuf[MAXPATHLEN];
490ab354
JH		 1749#if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1750 bufsize = sizeof (struct sockaddr_in);
1751#else
46fc3d4c 1752 bufsize = sizeof namebuf;
490ab354 1753#endif
eb5c063a 1754 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
46fc3d4c 1755 (struct sockaddr *)namebuf, &bufsize);
a0d0e21e
LW		 1756 }
1757 else
1758#endif
3b02c43c 1759 {
eb5c063a
NIS		 1760 count = PerlIO_read(IoIFP(io), buffer, length);
1761 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1762 if (count == 0 && PerlIO_error(IoIFP(io)))
1763 count = -1;
3b02c43c 1764 }
eb5c063a 1765 if (count < 0) {
a00b5bd3 1766 if ((IoTYPE(io) == IoTYPE_WRONLY) && ckWARN(WARN_IO))
a5390457 1767 report_wrongway_fh(gv, '>');
a0d0e21e 1768 goto say_undef;
af8c498a 1769 }
aa07b2f6 1770 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1dd30107
NC		 1771 *SvEND(read_target) = '\0';
1772 (void)SvPOK_only(read_target);
0064a8a9 1773 if (fp_utf8 && !IN_BYTES) {
eb5c063a 1774 /* Look at utf8 we got back and count the characters */
1df70142 1775 const char *bend = buffer + count;
eb5c063a 1776 while (buffer < bend) {
d0965105
JH		 1777 if (charstart) {
1778 skip = UTF8SKIP(buffer);
1779 charskip = 0;
1780 }
1781 if (buffer - charskip + skip > bend) {
eb5c063a
NIS		 1782 /* partial character - try for rest of it */
1783 length = skip - (bend-buffer);
aa07b2f6 1784 offset = bend - SvPVX_const(bufsv);
d0965105
JH		 1785 charstart = FALSE;
1786 charskip += count;
eb5c063a
NIS		 1787 goto more_bytes;
1788 }
1789 else {
1790 got++;
1791 buffer += skip;
d0965105
JH		 1792 charstart = TRUE;
1793 charskip = 0;
eb5c063a
NIS		 1794 }
1795 }
1796 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1797 provided amount read (count) was what was requested (length)
1798 */
1799 if (got < wanted && count == length) {
d0965105 1800 length = wanted - got;
aa07b2f6 1801 offset = bend - SvPVX_const(bufsv);
eb5c063a
NIS		 1802 goto more_bytes;
1803 }
1804 /* return value is character count */
1805 count = got;
1806 SvUTF8_on(bufsv);
1807 }
1dd30107
NC		 1808 else if (buffer_utf8) {
1809 /* Let svcatsv upgrade the bytes we read in to utf8.
1810 The buffer is a mortal so will be freed soon. */
1811 sv_catsv_nomg(bufsv, read_target);
1812 }
748a9306 1813 SvSETMAGIC(bufsv);
aac0dd9a 1814 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1815 if (!(IoFLAGS(io) & IOf_UNTAINT))
1816 SvTAINTED_on(bufsv);
a0d0e21e 1817 SP = ORIGMARK;
eb5c063a 1818 PUSHi(count);
a0d0e21e
LW		 1819 RETURN;
1820
1821 say_undef:
1822 SP = ORIGMARK;
1823 RETPUSHUNDEF;
1824}
1825
a0d0e21e
LW		 1826PP(pp_send)
1827{
27da23d5 1828 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e 1829 IO *io;
748a9306 1830 SV *bufsv;
83003860 1831 const char *buffer;
8c99d73e 1832 SSize_t retval;
a0d0e21e 1833 STRLEN blen;
c9cb0f41 1834 STRLEN orig_blen_bytes;
64a1bc8e 1835 const int op_type = PL_op->op_type;
c9cb0f41
NC		 1836 bool doing_utf8;
1837 U8 *tmpbuf = NULL;
64a1bc8e 1838
159b6efe 1839 GV *const gv = MUTABLE_GV(*++MARK);
14befaf4 1840 if (PL_op->op_type == OP_SYSWRITE
a79db61d 1841 && gv && (io = GvIO(gv))) {
ad64d0ec 1842 MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1843 if (mg) {
a79db61d 1844 if (MARK == SP - 1) {
c8834ab7
TC		 1845 SV *sv = *SP;
1846 mXPUSHi(sv_len(sv));
a79db61d
AL		 1847 PUTBACK;
1848 }
1849
1850 PUSHMARK(ORIGMARK);
ad64d0ec 1851 *(ORIGMARK+1) = SvTIED_obj(MUTABLE_SV(io), mg);
a79db61d
AL		 1852 ENTER;
1853 call_method("WRITE", G_SCALAR);
1854 LEAVE;
5616b3e5 1855 return NORMAL;
64a1bc8e 1856 }
1d603a67 1857 }
a0d0e21e
LW		 1858 if (!gv)
1859 goto say_undef;
64a1bc8e 1860
748a9306 1861 bufsv = *++MARK;
64a1bc8e 1862
748a9306 1863 SETERRNO(0,0);
a0d0e21e 1864 io = GvIO(gv);
cf167416 1865 if (!io || !IoIFP(io) || IoTYPE(io) == IoTYPE_RDONLY) {
8c99d73e 1866 retval = -1;
cf167416
RGS		 1867 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
1868 if (io && IoIFP(io))
a5390457 1869 report_wrongway_fh(gv, '<');
cf167416 1870 else
831e4cc3 1871 report_evil_fh(gv);
cf167416 1872 }
b5fe5ca2 1873 SETERRNO(EBADF,RMS_IFI);
7d59b7e4
NIS		 1874 goto say_undef;
1875 }
1876
c9cb0f41
NC		 1877 /* Do this first to trigger any overloading. */
1878 buffer = SvPV_const(bufsv, blen);
1879 orig_blen_bytes = blen;
1880 doing_utf8 = DO_UTF8(bufsv);
1881
7d59b7e4 1882 if (PerlIO_isutf8(IoIFP(io))) {
6aa2f6a7 1883 if (!SvUTF8(bufsv)) {
c9cb0f41
NC		 1884 /* We don't modify the original scalar. */
1885 tmpbuf = bytes_to_utf8((const U8*) buffer, &blen);
1886 buffer = (char *) tmpbuf;
1887 doing_utf8 = TRUE;
1888 }
a0d0e21e 1889 }
c9cb0f41
NC		 1890 else if (doing_utf8) {
1891 STRLEN tmplen = blen;
a79db61d 1892 U8 * const result = bytes_from_utf8((const U8*) buffer, &tmplen, &doing_utf8);
c9cb0f41
NC		 1893 if (!doing_utf8) {
1894 tmpbuf = result;
1895 buffer = (char *) tmpbuf;
1896 blen = tmplen;
1897 }
1898 else {
1899 assert((char *)result == buffer);
1900 Perl_croak(aTHX_ "Wide character in %s", OP_DESC(PL_op));
1901 }
7d59b7e4
NIS		 1902 }
1903
64a1bc8e 1904 if (op_type == OP_SYSWRITE) {
c9cb0f41
NC		 1905 Size_t length = 0; /* This length is in characters. */
1906 STRLEN blen_chars;
7d59b7e4 1907 IV offset;
c9cb0f41
NC		 1908
1909 if (doing_utf8) {
1910 if (tmpbuf) {
1911 /* The SV is bytes, and we've had to upgrade it. */
1912 blen_chars = orig_blen_bytes;
1913 } else {
1914 /* The SV really is UTF-8. */
1915 if (SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
1916 /* Don't call sv_len_utf8 again because it will call magic
1917 or overloading a second time, and we might get back a
1918 different result. */
9a206dfd 1919 blen_chars = utf8_length((U8*)buffer, (U8*)buffer + blen);
c9cb0f41
NC		 1920 } else {
1921 /* It's safe, and it may well be cached. */
1922 blen_chars = sv_len_utf8(bufsv);
1923 }
1924 }
1925 } else {
1926 blen_chars = blen;
1927 }
1928
1929 if (MARK >= SP) {
1930 length = blen_chars;
1931 } else {
1932#if Size_t_size > IVSIZE
1933 length = (Size_t)SvNVx(*++MARK);
1934#else
1935 length = (Size_t)SvIVx(*++MARK);
1936#endif
4b0c4b6f
NC		 1937 if ((SSize_t)length < 0) {
1938 Safefree(tmpbuf);
c9cb0f41 1939 DIE(aTHX_ "Negative length");
4b0c4b6f 1940 }
7d59b7e4 1941 }
c9cb0f41 1942
bbce6d69 1943 if (MARK < SP) {
a0d0e21e 1944 offset = SvIVx(*++MARK);
bbce6d69 1945 if (offset < 0) {
4b0c4b6f
NC		 1946 if (-offset > (IV)blen_chars) {
1947 Safefree(tmpbuf);
cea2e8a9 1948 DIE(aTHX_ "Offset outside string");
4b0c4b6f 1949 }
c9cb0f41 1950 offset += blen_chars;
3c946528 1951 } else if (offset > (IV)blen_chars) {
4b0c4b6f 1952 Safefree(tmpbuf);
cea2e8a9 1953 DIE(aTHX_ "Offset outside string");
4b0c4b6f 1954 }
bbce6d69 1955 } else
a0d0e21e 1956 offset = 0;
c9cb0f41
NC		 1957 if (length > blen_chars - offset)
1958 length = blen_chars - offset;
1959 if (doing_utf8) {
1960 /* Here we convert length from characters to bytes. */
1961 if (tmpbuf || SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
1962 /* Either we had to convert the SV, or the SV is magical, or
1963 the SV has overloading, in which case we can't or mustn't
1964 or mustn't call it again. */
1965
1966 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
1967 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1968 } else {
1969 /* It's a real UTF-8 SV, and it's not going to change under
1970 us. Take advantage of any cache. */
1971 I32 start = offset;
1972 I32 len_I32 = length;
1973
1974 /* Convert the start and end character positions to bytes.
1975 Remember that the second argument to sv_pos_u2b is relative
1976 to the first. */
1977 sv_pos_u2b(bufsv, &start, &len_I32);
1978
1979 buffer += start;
1980 length = len_I32;
1981 }
7d59b7e4
NIS		 1982 }
1983 else {
1984 buffer = buffer+offset;
1985 }
a7092146 1986#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 1987 if (IoTYPE(io) == IoTYPE_SOCKET) {
8c99d73e 1988 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1989 buffer, length, 0);
a7092146
GS		 1990 }
1991 else
1992#endif
1993 {
94e4c244 1994 /* See the note at doio.c:do_print about filesize limits. --jhi */
8c99d73e 1995 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1996 buffer, length);
a7092146 1997 }
a0d0e21e
LW		 1998 }
1999#ifdef HAS_SOCKET
64a1bc8e
NC		 2000 else {
2001 const int flags = SvIVx(*++MARK);
2002 if (SP > MARK) {
2003 STRLEN mlen;
2004 char * const sockbuf = SvPVx(*++MARK, mlen);
2005 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
2006 flags, (struct sockaddr *)sockbuf, mlen);
2007 }
2008 else {
2009 retval
2010 = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, flags);
2011 }
a0d0e21e 2012 }
a0d0e21e
LW		 2013#else
2014 else
cea2e8a9 2015 DIE(aTHX_ PL_no_sock_func, "send");
a0d0e21e 2016#endif
c9cb0f41 2017
8c99d73e 2018 if (retval < 0)
a0d0e21e
LW		 2019 goto say_undef;
2020 SP = ORIGMARK;
c9cb0f41 2021 if (doing_utf8)
f36eea10 2022 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
4b0c4b6f 2023
a79db61d 2024 Safefree(tmpbuf);
8c99d73e
GS		 2025#if Size_t_size > IVSIZE
2026 PUSHn(retval);
2027#else
2028 PUSHi(retval);
2029#endif
a0d0e21e
LW		 2030 RETURN;
2031
2032 say_undef:
a79db61d 2033 Safefree(tmpbuf);
a0d0e21e
LW		 2034 SP = ORIGMARK;
2035 RETPUSHUNDEF;
2036}
2037
a0d0e21e
LW		 2038PP(pp_eof)
2039{
27da23d5 2040 dVAR; dSP;
a0d0e21e 2041 GV *gv;
32e65323
CS		 2042 IO *io;
2043 MAGIC *mg;
bc0c81ca
NC		 2044 /*
2045 * in Perl 5.12 and later, the additional parameter is a bitmask:
2046 * 0 = eof
2047 * 1 = eof(FH)
2048 * 2 = eof() <- ARGV magic
2049 *
2050 * I'll rely on the compiler's trace flow analysis to decide whether to
2051 * actually assign this out here, or punt it into the only block where it is
2052 * used. Doing it out here is DRY on the condition logic.
2053 */
2054 unsigned int which;
a0d0e21e 2055
bc0c81ca 2056 if (MAXARG) {
32e65323 2057 gv = PL_last_in_gv = MUTABLE_GV(POPs); /* eof(FH) */
bc0c81ca
NC		 2058 which = 1;
2059 }
b5f55170
NC		 2060 else {
2061 EXTEND(SP, 1);
2062
bc0c81ca 2063 if (PL_op->op_flags & OPf_SPECIAL) {
b5f55170 2064 gv = PL_last_in_gv = GvEGVx(PL_argvgv); /* eof() - ARGV magic */
bc0c81ca
NC		 2065 which = 2;
2066 }
2067 else {
b5f55170 2068 gv = PL_last_in_gv; /* eof */
bc0c81ca
NC		 2069 which = 0;
2070 }
b5f55170 2071 }
32e65323
CS		 2072
2073 if (!gv)
2074 RETPUSHNO;
2075
2076 if ((io = GvIO(gv)) && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) {
74f0b550 2077 return tied_handle_method1("EOF", SP, io, mg, newSVuv(which));
146174a9 2078 }
4592e6ca 2079
32e65323
CS		 2080 if (!MAXARG && (PL_op->op_flags & OPf_SPECIAL)) { /* eof() */
2081 if (io && !IoIFP(io)) {
2082 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
2083 IoLINES(io) = 0;
2084 IoFLAGS(io) &= ~IOf_START;
2085 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, NULL);
2086 if (GvSV(gv))
2087 sv_setpvs(GvSV(gv), "-");
2088 else
2089 GvSV(gv) = newSVpvs("-");
2090 SvSETMAGIC(GvSV(gv));
2091 }
2092 else if (!nextargv(gv))
2093 RETPUSHYES;
6136c704 2094 }
4592e6ca
NIS		 2095 }
2096
32e65323 2097 PUSHs(boolSV(do_eof(gv)));
a0d0e21e
LW		 2098 RETURN;
2099}
2100
2101PP(pp_tell)
2102{
27da23d5 2103 dVAR; dSP; dTARGET;
301e8125 2104 GV *gv;
5b468f54 2105 IO *io;
a0d0e21e 2106
c4420975 2107 if (MAXARG != 0)
159b6efe 2108 PL_last_in_gv = MUTABLE_GV(POPs);
ac3697cd
NC		 2109 else
2110 EXTEND(SP, 1);
c4420975 2111 gv = PL_last_in_gv;
4592e6ca 2112
a79db61d 2113 if (gv && (io = GvIO(gv))) {
ad64d0ec 2114 MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2115 if (mg) {
ebc1fde6 2116 return tied_handle_method("TELL", SP, io, mg);
a79db61d 2117 }
4592e6ca 2118 }
f4817f32 2119 else if (!gv) {
f03173f2
RGS		 2120 if (!errno)
2121 SETERRNO(EBADF,RMS_IFI);
2122 PUSHi(-1);
2123 RETURN;
2124 }
4592e6ca 2125
146174a9
CB		 2126#if LSEEKSIZE > IVSIZE
2127 PUSHn( do_tell(gv) );
2128#else
a0d0e21e 2129 PUSHi( do_tell(gv) );
146174a9 2130#endif
a0d0e21e
LW		 2131 RETURN;
2132}
2133
137443ea 2134PP(pp_sysseek)
2135{
27da23d5 2136 dVAR; dSP;
1df70142 2137 const int whence = POPi;
146174a9 2138#if LSEEKSIZE > IVSIZE
7452cf6a 2139 const Off_t offset = (Off_t)SvNVx(POPs);
146174a9 2140#else
7452cf6a 2141 const Off_t offset = (Off_t)SvIVx(POPs);
146174a9 2142#endif
a0d0e21e 2143
159b6efe 2144 GV * const gv = PL_last_in_gv = MUTABLE_GV(POPs);
a79db61d 2145 IO *io;
4592e6ca 2146
a79db61d 2147 if (gv && (io = GvIO(gv))) {
ad64d0ec 2148 MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2149 if (mg) {
cb50131a 2150#if LSEEKSIZE > IVSIZE
74f0b550 2151 SV *const offset_sv = newSVnv((NV) offset);
cb50131a 2152#else
74f0b550 2153 SV *const offset_sv = newSViv(offset);
cb50131a 2154#endif
bc0c81ca
NC		 2155
2156 return tied_handle_method2("SEEK", SP, io, mg, offset_sv,
74f0b550 2157 newSViv(whence));
a79db61d 2158 }
4592e6ca
NIS		 2159 }
2160
533c011a 2161 if (PL_op->op_type == OP_SEEK)
8903cb82 2162 PUSHs(boolSV(do_seek(gv, offset, whence)));
2163 else {
0bcc34c2 2164 const Off_t sought = do_sysseek(gv, offset, whence);
b448e4fe 2165 if (sought < 0)
146174a9
CB		 2166 PUSHs(&PL_sv_undef);
2167 else {
7452cf6a 2168 SV* const sv = sought ?
146174a9 2169#if LSEEKSIZE > IVSIZE
b448e4fe 2170 newSVnv((NV)sought)
146174a9 2171#else
b448e4fe 2172 newSViv(sought)
146174a9
CB		 2173#endif
2174 : newSVpvn(zero_but_true, ZBTLEN);
6e449a3a 2175 mPUSHs(sv);
146174a9 2176 }
8903cb82 2177 }
a0d0e21e
LW		 2178 RETURN;
2179}
2180
2181PP(pp_truncate)
2182{
97aff369 2183 dVAR;
39644a26 2184 dSP;
8c99d73e
GS		 2185 /* There seems to be no consensus on the length type of truncate()
2186 * and ftruncate(), both off_t and size_t have supporters. In
2187 * general one would think that when using large files, off_t is
2188 * at least as wide as size_t, so using an off_t should be okay. */
2189 /* XXX Configure probe for the length type of *truncate() needed XXX */
0bcc34c2 2190 Off_t len;
a0d0e21e 2191
25342a55 2192#if Off_t_size > IVSIZE
0bcc34c2 2193 len = (Off_t)POPn;
8c99d73e 2194#else
0bcc34c2 2195 len = (Off_t)POPi;
8c99d73e
GS		 2196#endif
2197 /* Checking for length < 0 is problematic as the type might or
301e8125 2198 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 2199 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2200 SETERRNO(0,0);
d05c1ba0 2201 {
d05c1ba0
JH		 2202 int result = 1;
2203 GV *tmpgv;
090bf15b
SR		 2204 IO *io;
2205
d05c1ba0 2206 if (PL_op->op_flags & OPf_SPECIAL) {
f776e3cd 2207 tmpgv = gv_fetchsv(POPs, 0, SVt_PVIO);
d05c1ba0 2208
090bf15b
SR		 2209 do_ftruncate_gv:
2210 if (!GvIO(tmpgv))
2211 result = 0;
d05c1ba0 2212 else {
090bf15b
SR		 2213 PerlIO *fp;
2214 io = GvIOp(tmpgv);
2215 do_ftruncate_io:
2216 TAINT_PROPER("truncate");
2217 if (!(fp = IoIFP(io))) {
2218 result = 0;
2219 }
2220 else {
2221 PerlIO_flush(fp);
cbdc8872 2222#ifdef HAS_TRUNCATE
090bf15b 2223 if (ftruncate(PerlIO_fileno(fp), len) < 0)
301e8125 2224#else
090bf15b 2225 if (my_chsize(PerlIO_fileno(fp), len) < 0)
cbdc8872 2226#endif
090bf15b
SR		 2227 result = 0;
2228 }
d05c1ba0 2229 }
cbdc8872 2230 }
d05c1ba0 2231 else {
7452cf6a 2232 SV * const sv = POPs;
83003860 2233 const char *name;
7a5fd60d 2234
6e592b3a 2235 if (isGV_with_GP(sv)) {
159b6efe 2236 tmpgv = MUTABLE_GV(sv); /* *main::FRED for example */
090bf15b 2237 goto do_ftruncate_gv;
d05c1ba0 2238 }
6e592b3a 2239 else if (SvROK(sv) && isGV_with_GP(SvRV(sv))) {
159b6efe 2240 tmpgv = MUTABLE_GV(SvRV(sv)); /* \*main::FRED for example */
090bf15b
SR		 2241 goto do_ftruncate_gv;
2242 }
2243 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2244 io = MUTABLE_IO(SvRV(sv)); /* *main::FRED{IO} for example */
090bf15b 2245 goto do_ftruncate_io;
d05c1ba0 2246 }
1e422769 2247
83003860 2248 name = SvPV_nolen_const(sv);
d05c1ba0 2249 TAINT_PROPER("truncate");
cbdc8872 2250#ifdef HAS_TRUNCATE
d05c1ba0
JH		 2251 if (truncate(name, len) < 0)
2252 result = 0;
cbdc8872 2253#else
d05c1ba0 2254 {
7452cf6a 2255 const int tmpfd = PerlLIO_open(name, O_RDWR);
d05c1ba0 2256
7452cf6a 2257 if (tmpfd < 0)
cbdc8872 2258 result = 0;
d05c1ba0
JH		 2259 else {
2260 if (my_chsize(tmpfd, len) < 0)
2261 result = 0;
2262 PerlLIO_close(tmpfd);
2263 }
cbdc8872 2264 }
a0d0e21e 2265#endif
d05c1ba0 2266 }
a0d0e21e 2267
d05c1ba0
JH		 2268 if (result)
2269 RETPUSHYES;
2270 if (!errno)
93189314 2271 SETERRNO(EBADF,RMS_IFI);
d05c1ba0
JH		 2272 RETPUSHUNDEF;
2273 }
a0d0e21e
LW		 2274}
2275
a0d0e21e
LW		 2276PP(pp_ioctl)
2277{
97aff369 2278 dVAR; dSP; dTARGET;
7452cf6a 2279 SV * const argsv = POPs;
1df70142 2280 const unsigned int func = POPu;
e1ec3a88 2281 const int optype = PL_op->op_type;
159b6efe 2282 GV * const gv = MUTABLE_GV(POPs);
4608196e 2283 IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2284 char *s;
324aa91a 2285 IV retval;
a0d0e21e 2286
748a9306 2287 if (!io || !argsv || !IoIFP(io)) {
c289d2f7 2288 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
831e4cc3 2289 report_evil_fh(gv);
93189314 2290 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
a0d0e21e
LW		 2291 RETPUSHUNDEF;
2292 }
2293
748a9306 2294 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2295 STRLEN len;
324aa91a 2296 STRLEN need;
748a9306 2297 s = SvPV_force(argsv, len);
324aa91a
HF		 2298 need = IOCPARM_LEN(func);
2299 if (len < need) {
2300 s = Sv_Grow(argsv, need + 1);
2301 SvCUR_set(argsv, need);
a0d0e21e
LW		 2302 }
2303
748a9306 2304 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW		 2305 }
2306 else {
748a9306 2307 retval = SvIV(argsv);
c529f79d 2308 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW		 2309 }
2310
ed4b2e6b 2311 TAINT_PROPER(PL_op_desc[optype]);
a0d0e21e
LW		 2312
2313 if (optype == OP_IOCTL)
2314#ifdef HAS_IOCTL
76e3520e 2315 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2316#else
cea2e8a9 2317 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW		 2318#endif
2319 else
c214f4ad
WB		 2320#ifndef HAS_FCNTL
2321 DIE(aTHX_ "fcntl is not implemented");
2322#else
55497cff 2323#if defined(OS2) && defined(__EMX__)
760ac839 2324 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2325#else
760ac839 2326 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2327#endif
6652bd42 2328#endif
a0d0e21e 2329
6652bd42 2330#if defined(HAS_IOCTL) || defined(HAS_FCNTL)
748a9306
LW		 2331 if (SvPOK(argsv)) {
2332 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2333 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
53e06cf0 2334 OP_NAME(PL_op));
748a9306
LW		 2335 s[SvCUR(argsv)] = 0; /* put our null back */
2336 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW		 2337 }
2338
2339 if (retval == -1)
2340 RETPUSHUNDEF;
2341 if (retval != 0) {
2342 PUSHi(retval);
2343 }
2344 else {
8903cb82 2345 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e 2346 }
4808266b 2347#endif
c214f4ad 2348 RETURN;
a0d0e21e
LW		 2349}
2350
2351PP(pp_flock)
2352{
9cad6237 2353#ifdef FLOCK
97aff369 2354 dVAR; dSP; dTARGET;
a0d0e21e 2355 I32 value;
bc37a18f 2356 IO *io = NULL;
760ac839 2357 PerlIO *fp;
7452cf6a 2358 const int argtype = POPi;
159b6efe 2359 GV * const gv = (MAXARG == 0) ? PL_last_in_gv : MUTABLE_GV(POPs);
16d20bd9 2360
bc37a18f
RG		 2361 if (gv && (io = GvIO(gv)))
2362 fp = IoIFP(io);
2363 else {
4608196e 2364 fp = NULL;
bc37a18f
RG		 2365 io = NULL;
2366 }
0bcc34c2 2367 /* XXX Looks to me like io is always NULL at this point */
a0d0e21e 2368 if (fp) {
68dc0745 2369 (void)PerlIO_flush(fp);
76e3520e 2370 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2371 }
cb50131a 2372 else {
bc37a18f 2373 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
831e4cc3 2374 report_evil_fh(gv);
a0d0e21e 2375 value = 0;
93189314 2376 SETERRNO(EBADF,RMS_IFI);
cb50131a 2377 }
a0d0e21e
LW		 2378 PUSHi(value);
2379 RETURN;
2380#else
cea2e8a9 2381 DIE(aTHX_ PL_no_func, "flock()");
a0d0e21e
LW		 2382#endif
2383}
2384
2385/* Sockets. */
2386
2387PP(pp_socket)
2388{
a0d0e21e 2389#ifdef HAS_SOCKET
97aff369 2390 dVAR; dSP;
7452cf6a
AL		 2391 const int protocol = POPi;
2392 const int type = POPi;
2393 const int domain = POPi;
159b6efe 2394 GV * const gv = MUTABLE_GV(POPs);
7452cf6a 2395 register IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e
LW		 2396 int fd;
2397
c289d2f7
JH		 2398 if (!gv || !io) {
2399 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
831e4cc3 2400 report_evil_fh(gv);
5ee74a84 2401 if (io && IoIFP(io))
c289d2f7 2402 do_close(gv, FALSE);
93189314 2403 SETERRNO(EBADF,LIB_INVARG);
a0d0e21e
LW		 2404 RETPUSHUNDEF;
2405 }
2406
57171420
BS		 2407 if (IoIFP(io))
2408 do_close(gv, FALSE);
2409
a0d0e21e 2410 TAINT_PROPER("socket");
6ad3d225 2411 fd = PerlSock_socket(domain, type, protocol);
a0d0e21e
LW		 2412 if (fd < 0)
2413 RETPUSHUNDEF;
460c8493
IZ		 2414 IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2415 IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2416 IoTYPE(io) = IoTYPE_SOCKET;
a0d0e21e 2417 if (!IoIFP(io) || !IoOFP(io)) {
760ac839
LW		 2418 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2419 if (IoOFP(io)) PerlIO_close(IoOFP(io));
6ad3d225 2420 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
a0d0e21e
LW		 2421 RETPUSHUNDEF;
2422 }
8d2a6795
GS		 2423#if defined(HAS_FCNTL) && defined(F_SETFD)
2424 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2425#endif
a0d0e21e 2426
d5ff79b3
OF		 2427#ifdef EPOC
2428 setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
2429#endif
2430
a0d0e21e
LW		 2431 RETPUSHYES;
2432#else
cea2e8a9 2433 DIE(aTHX_ PL_no_sock_func, "socket");
a0d0e21e
LW		 2434#endif
2435}
2436
2437PP(pp_sockpair)
2438{
c95c94b1 2439#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
97aff369 2440 dVAR; dSP;
7452cf6a
AL		 2441 const int protocol = POPi;
2442 const int type = POPi;
2443 const int domain = POPi;
159b6efe
NC		 2444 GV * const gv2 = MUTABLE_GV(POPs);
2445 GV * const gv1 = MUTABLE_GV(POPs);
7452cf6a
AL		 2446 register IO * const io1 = gv1 ? GvIOn(gv1) : NULL;
2447 register IO * const io2 = gv2 ? GvIOn(gv2) : NULL;
a0d0e21e
LW		 2448 int fd[2];
2449
c289d2f7
JH		 2450 if (!gv1 || !gv2 || !io1 || !io2) {
2451 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
2452 if (!gv1 || !io1)
831e4cc3 2453 report_evil_fh(gv1);
c289d2f7 2454 if (!gv2 || !io2)
831e4cc3 2455 report_evil_fh(gv2);
c289d2f7 2456 }
c289d2f7 2457 }
a0d0e21e 2458
46d2cc54 2459 if (io1 && IoIFP(io1))
dc0d0a5f 2460 do_close(gv1, FALSE);
46d2cc54 2461 if (io2 && IoIFP(io2))
dc0d0a5f 2462 do_close(gv2, FALSE);
57171420 2463
46d2cc54
NC		 2464 if (!io1 || !io2)
2465 RETPUSHUNDEF;
2466
a0d0e21e 2467 TAINT_PROPER("socketpair");
6ad3d225 2468 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
a0d0e21e 2469 RETPUSHUNDEF;
460c8493
IZ		 2470 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2471 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
50952442 2472 IoTYPE(io1) = IoTYPE_SOCKET;
460c8493
IZ		 2473 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2474 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
50952442 2475 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2476 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW		 2477 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2478 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2479 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW		 2480 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2481 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2482 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW		 2483 RETPUSHUNDEF;
2484 }
8d2a6795
GS		 2485#if defined(HAS_FCNTL) && defined(F_SETFD)
2486 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2487 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2488#endif
a0d0e21e
LW		 2489
2490 RETPUSHYES;
2491#else
cea2e8a9 2492 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW		 2493#endif
2494}
2495
2496PP(pp_bind)
2497{
a0d0e21e 2498#ifdef HAS_SOCKET
97aff369 2499 dVAR; dSP;
7452cf6a 2500 SV * const addrsv = POPs;
349d4f2f
NC		 2501 /* OK, so on what platform does bind modify addr? */
2502 const char *addr;
159b6efe 2503 GV * const gv = MUTABLE_GV(POPs);
7452cf6a 2504 register IO * const io = GvIOn(gv);
a0d0e21e
LW		 2505 STRLEN len;
2506
2507 if (!io || !IoIFP(io))
2508 goto nuts;
2509
349d4f2f 2510 addr = SvPV_const(addrsv, len);
a0d0e21e 2511 TAINT_PROPER("bind");
a79db61d 2512 if (PerlSock_bind(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
a0d0e21e
LW		 2513 RETPUSHYES;
2514 else
2515 RETPUSHUNDEF;
2516
2517nuts:
599cee73 2518 if (ckWARN(WARN_CLOSED))
831e4cc3 2519 report_evil_fh(gv);
93189314 2520 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2521 RETPUSHUNDEF;
2522#else
cea2e8a9 2523 DIE(aTHX_ PL_no_sock_func, "bind");
a0d0e21e
LW		 2524#endif
2525}
2526
2527PP(pp_connect)
2528{
a0d0e21e 2529#ifdef HAS_SOCKET
97aff369 2530 dVAR; dSP;
7452cf6a 2531 SV * const addrsv = POPs;
159b6efe 2532 GV * const gv = MUTABLE_GV(POPs);
7452cf6a 2533 register IO * const io = GvIOn(gv);
349d4f2f 2534 const char *addr;
a0d0e21e
LW		 2535 STRLEN len;
2536
2537 if (!io || !IoIFP(io))
2538 goto nuts;
2539
349d4f2f 2540 addr = SvPV_const(addrsv, len);
a0d0e21e 2541 TAINT_PROPER("connect");
6ad3d225 2542 if (PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
a0d0e21e
LW		 2543 RETPUSHYES;
2544 else
2545 RETPUSHUNDEF;
2546
2547nuts:
599cee73 2548 if (ckWARN(WARN_CLOSED))
831e4cc3 2549 report_evil_fh(gv);
93189314 2550 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2551 RETPUSHUNDEF;
2552#else
cea2e8a9 2553 DIE(aTHX_ PL_no_sock_func, "connect");
a0d0e21e
LW		 2554#endif
2555}
2556
2557PP(pp_listen)
2558{
a0d0e21e 2559#ifdef HAS_SOCKET
97aff369 2560 dVAR; dSP;
7452cf6a 2561 const int backlog = POPi;
159b6efe 2562 GV * const gv = MUTABLE_GV(POPs);
7452cf6a 2563 register IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2564
c289d2f7 2565 if (!gv || !io || !IoIFP(io))
a0d0e21e
LW		 2566 goto nuts;
2567
6ad3d225 2568 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW		 2569 RETPUSHYES;
2570 else
2571 RETPUSHUNDEF;
2572
2573nuts:
599cee73 2574 if (ckWARN(WARN_CLOSED))
831e4cc3 2575 report_evil_fh(gv);
93189314 2576 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2577 RETPUSHUNDEF;
2578#else
cea2e8a9 2579 DIE(aTHX_ PL_no_sock_func, "listen");
a0d0e21e
LW		 2580#endif
2581}
2582
2583PP(pp_accept)
2584{
a0d0e21e 2585#ifdef HAS_SOCKET
97aff369 2586 dVAR; dSP; dTARGET;
a0d0e21e
LW		 2587 register IO *nstio;
2588 register IO *gstio;
93d47a36
JH		 2589 char namebuf[MAXPATHLEN];
2590#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
2591 Sock_size_t len = sizeof (struct sockaddr_in);
2592#else
2593 Sock_size_t len = sizeof namebuf;
2594#endif
159b6efe
NC		 2595 GV * const ggv = MUTABLE_GV(POPs);
2596 GV * const ngv = MUTABLE_GV(POPs);
a0d0e21e
LW		 2597 int fd;
2598
a0d0e21e
LW		 2599 if (!ngv)
2600 goto badexit;
2601 if (!ggv)
2602 goto nuts;
2603
2604 gstio = GvIO(ggv);
2605 if (!gstio || !IoIFP(gstio))
2606 goto nuts;
2607
2608 nstio = GvIOn(ngv);
93d47a36 2609 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
e294cc5d
JH		 2610#if defined(OEMVS)
2611 if (len == 0) {
2612 /* Some platforms indicate zero length when an AF_UNIX client is
2613 * not bound. Simulate a non-zero-length sockaddr structure in
2614 * this case. */
2615 namebuf[0] = 0; /* sun_len */
2616 namebuf[1] = AF_UNIX; /* sun_family */
2617 len = 2;
2618 }
2619#endif
2620
a0d0e21e
LW		 2621 if (fd < 0)
2622 goto badexit;
a70048fb
AB		 2623 if (IoIFP(nstio))
2624 do_close(ngv, FALSE);
460c8493
IZ		 2625 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2626 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2627 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2628 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW		 2629 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2630 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2631 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW		 2632 goto badexit;
2633 }
8d2a6795
GS		 2634#if defined(HAS_FCNTL) && defined(F_SETFD)
2635 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2636#endif
a0d0e21e 2637
ed79a026 2638#ifdef EPOC
93d47a36 2639 len = sizeof (struct sockaddr_in); /* EPOC somehow truncates info */
a9f1f6b0 2640 setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
ed79a026 2641#endif
381c1bae 2642#ifdef __SCO_VERSION__
93d47a36 2643 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
381c1bae 2644#endif
ed79a026 2645
93d47a36 2646 PUSHp(namebuf, len);
a0d0e21e
LW		 2647 RETURN;
2648
2649nuts:
599cee73 2650 if (ckWARN(WARN_CLOSED))
831e4cc3 2651 report_evil_fh(ggv);
93189314 2652 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2653
2654badexit:
2655 RETPUSHUNDEF;
2656
2657#else
cea2e8a9 2658 DIE(aTHX_ PL_no_sock_func, "accept");
a0d0e21e
LW		 2659#endif
2660}
2661
2662PP(pp_shutdown)
2663{
a0d0e21e 2664#ifdef HAS_SOCKET
97aff369 2665 dVAR; dSP; dTARGET;
7452cf6a 2666 const int how = POPi;
159b6efe 2667 GV * const gv = MUTABLE_GV(POPs);
7452cf6a 2668 register IO * const io = GvIOn(gv);
a0d0e21e
LW		 2669
2670 if (!io || !IoIFP(io))
2671 goto nuts;
2672
6ad3d225 2673 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW		 2674 RETURN;
2675
2676nuts:
599cee73 2677 if (ckWARN(WARN_CLOSED))
831e4cc3 2678 report_evil_fh(gv);
93189314 2679 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2680 RETPUSHUNDEF;
2681#else
cea2e8a9 2682 DIE(aTHX_ PL_no_sock_func, "shutdown");
a0d0e21e
LW		 2683#endif
2684}
2685
a0d0e21e
LW		 2686PP(pp_ssockopt)
2687{
a0d0e21e 2688#ifdef HAS_SOCKET
97aff369 2689 dVAR; dSP;
7452cf6a 2690 const int optype = PL_op->op_type;
561b68a9 2691 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
7452cf6a
AL		 2692 const unsigned int optname = (unsigned int) POPi;
2693 const unsigned int lvl = (unsigned int) POPi;
159b6efe 2694 GV * const gv = MUTABLE_GV(POPs);
7452cf6a 2695 register IO * const io = GvIOn(gv);
a0d0e21e 2696 int fd;
1e422769 2697 Sock_size_t len;
a0d0e21e 2698
a0d0e21e
LW		 2699 if (!io || !IoIFP(io))
2700 goto nuts;
2701
760ac839 2702 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2703 switch (optype) {
2704 case OP_GSOCKOPT:
748a9306 2705 SvGROW(sv, 257);
a0d0e21e 2706 (void)SvPOK_only(sv);
748a9306
LW		 2707 SvCUR_set(sv,256);
2708 *SvEND(sv) ='\0';
1e422769 2709 len = SvCUR(sv);
6ad3d225 2710 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2711 goto nuts2;
1e422769 2712 SvCUR_set(sv, len);
748a9306 2713 *SvEND(sv) ='\0';
a0d0e21e
LW		 2714 PUSHs(sv);
2715 break;
2716 case OP_SSOCKOPT: {
1215b447
JH		 2717#if defined(__SYMBIAN32__)
2718# define SETSOCKOPT_OPTION_VALUE_T void *
2719#else
2720# define SETSOCKOPT_OPTION_VALUE_T const char *
2721#endif
2722 /* XXX TODO: We need to have a proper type (a Configure probe,
2723 * etc.) for what the C headers think of the third argument of
2724 * setsockopt(), the option_value read-only buffer: is it
2725 * a "char *", or a "void *", const or not. Some compilers
2726 * don't take kindly to e.g. assuming that "char *" implicitly
2727 * promotes to a "void *", or to explicitly promoting/demoting
2728 * consts to non/vice versa. The "const void *" is the SUS
2729 * definition, but that does not fly everywhere for the above
2730 * reasons. */
2731 SETSOCKOPT_OPTION_VALUE_T buf;
1e422769 2732 int aint;
2733 if (SvPOKp(sv)) {
2d8e6c8d 2734 STRLEN l;
1215b447 2735 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2d8e6c8d 2736 len = l;
1e422769 2737 }
56ee1660 2738 else {
a0d0e21e 2739 aint = (int)SvIV(sv);
1215b447 2740 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
a0d0e21e
LW		 2741 len = sizeof(int);
2742 }
6ad3d225 2743 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2744 goto nuts2;
3280af22 2745 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 2746 }
2747 break;
2748 }
2749 RETURN;
2750
2751nuts:
599cee73 2752 if (ckWARN(WARN_CLOSED))
831e4cc3 2753 report_evil_fh(gv);
93189314 2754 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2755nuts2:
2756 RETPUSHUNDEF;
2757
2758#else
af51a00e 2759 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 2760#endif
2761}
2762
a0d0e21e
LW		 2763PP(pp_getpeername)
2764{
a0d0e21e 2765#ifdef HAS_SOCKET
97aff369 2766 dVAR; dSP;
7452cf6a 2767 const int optype = PL_op->op_type;
159b6efe 2768 GV * const gv = MUTABLE_GV(POPs);
7452cf6a
AL		 2769 register IO * const io = GvIOn(gv);
2770 Sock_size_t len;
a0d0e21e
LW		 2771 SV *sv;
2772 int fd;
a0d0e21e
LW		 2773
2774 if (!io || !IoIFP(io))
2775 goto nuts;
2776
561b68a9 2777 sv = sv_2mortal(newSV(257));
748a9306 2778 (void)SvPOK_only(sv);
1e422769 2779 len = 256;
2780 SvCUR_set(sv, len);
748a9306 2781 *SvEND(sv) ='\0';
760ac839 2782 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2783 switch (optype) {
2784 case OP_GETSOCKNAME:
6ad3d225 2785 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW		 2786 goto nuts2;
2787 break;
2788 case OP_GETPEERNAME:
6ad3d225 2789 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2790 goto nuts2;
490ab354
JH		 2791#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2792 {
2793 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";
2794 /* If the call succeeded, make sure we don't have a zeroed port/addr */
349d4f2f 2795 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2fbb330f 2796 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
490ab354 2797 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2798 goto nuts2;
490ab354
JH		 2799 }
2800 }
2801#endif
a0d0e21e
LW		 2802 break;
2803 }
13826f2c
CS		 2804#ifdef BOGUS_GETNAME_RETURN
2805 /* Interactive Unix, getpeername() and getsockname()
2806 does not return valid namelen */
1e422769 2807 if (len == BOGUS_GETNAME_RETURN)
2808 len = sizeof(struct sockaddr);
13826f2c 2809#endif
1e422769 2810 SvCUR_set(sv, len);
748a9306 2811 *SvEND(sv) ='\0';
a0d0e21e
LW		 2812 PUSHs(sv);
2813 RETURN;
2814
2815nuts:
599cee73 2816 if (ckWARN(WARN_CLOSED))
831e4cc3 2817 report_evil_fh(gv);
93189314 2818 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2819nuts2:
2820 RETPUSHUNDEF;
2821
2822#else
af51a00e 2823 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 2824#endif
2825}
2826
2827/* Stat calls. */
2828
a0d0e21e
LW		 2829PP(pp_stat)
2830{
97aff369 2831 dVAR;
39644a26 2832 dSP;
10edeb5d 2833 GV *gv = NULL;
ad02613c 2834 IO *io;
54310121 2835 I32 gimme;
a0d0e21e
LW		 2836 I32 max = 13;
2837
533c011a 2838 if (PL_op->op_flags & OPf_REF) {
2dd78f96 2839 gv = cGVOP_gv;
8a4e5b40 2840 if (PL_op->op_type == OP_LSTAT) {
5d3e98de 2841 if (gv != PL_defgv) {
5d329e6e 2842 do_fstat_warning_check:
a2a5de95
NC		 2843 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
2844 "lstat() on filehandle %s", gv ? GvENAME(gv) : "");
5d3e98de 2845 } else if (PL_laststype != OP_LSTAT)
8a4e5b40 2846 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
8a4e5b40
DD		 2847 }
2848
748a9306 2849 do_fstat:
2dd78f96 2850 if (gv != PL_defgv) {
3280af22 2851 PL_laststype = OP_STAT;
2dd78f96 2852 PL_statgv = gv;
76f68e9b 2853 sv_setpvs(PL_statname, "");
5228a96c 2854 if(gv) {
ad02613c
SP		 2855 io = GvIO(gv);
2856 do_fstat_have_io:
5228a96c
SP		 2857 if (io) {
2858 if (IoIFP(io)) {
2859 PL_laststatval =
2860 PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
2861 } else if (IoDIRP(io)) {
5228a96c 2862 PL_laststatval =
3497a01f 2863 PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache);
5228a96c
SP		 2864 } else {
2865 PL_laststatval = -1;
2866 }
2867 }
2868 }
2869 }
2870
9ddeeac9 2871 if (PL_laststatval < 0) {
2dd78f96 2872 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
831e4cc3 2873 report_evil_fh(gv);
a0d0e21e 2874 max = 0;
9ddeeac9 2875 }
a0d0e21e
LW		 2876 }
2877 else {
7452cf6a 2878 SV* const sv = POPs;
6e592b3a 2879 if (isGV_with_GP(sv)) {
159b6efe 2880 gv = MUTABLE_GV(sv);
748a9306 2881 goto do_fstat;
6e592b3a 2882 } else if(SvROK(sv) && isGV_with_GP(SvRV(sv))) {
159b6efe 2883 gv = MUTABLE_GV(SvRV(sv));
ad02613c
SP		 2884 if (PL_op->op_type == OP_LSTAT)
2885 goto do_fstat_warning_check;
2886 goto do_fstat;
2887 } else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2888 io = MUTABLE_IO(SvRV(sv));
ad02613c
SP		 2889 if (PL_op->op_type == OP_LSTAT)
2890 goto do_fstat_warning_check;
2891 goto do_fstat_have_io;
2892 }
2893
0510663f 2894 sv_setpv(PL_statname, SvPV_nolen_const(sv));
a0714e2c 2895 PL_statgv = NULL;
533c011a
NIS		 2896 PL_laststype = PL_op->op_type;
2897 if (PL_op->op_type == OP_LSTAT)
0510663f 2898 PL_laststatval = PerlLIO_lstat(SvPV_nolen_const(PL_statname), &PL_statcache);
a0d0e21e 2899 else
0510663f 2900 PL_laststatval = PerlLIO_stat(SvPV_nolen_const(PL_statname), &PL_statcache);
3280af22 2901 if (PL_laststatval < 0) {
0510663f 2902 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname), '\n'))
9014280d 2903 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
a0d0e21e
LW		 2904 max = 0;
2905 }
2906 }
2907
54310121 2908 gimme = GIMME_V;
2909 if (gimme != G_ARRAY) {
2910 if (gimme != G_VOID)
2911 XPUSHs(boolSV(max));
2912 RETURN;
a0d0e21e
LW		 2913 }
2914 if (max) {
36477c24 2915 EXTEND(SP, max);
2916 EXTEND_MORTAL(max);
6e449a3a
MHM		 2917 mPUSHi(PL_statcache.st_dev);
2918 mPUSHi(PL_statcache.st_ino);
2919 mPUSHu(PL_statcache.st_mode);
2920 mPUSHu(PL_statcache.st_nlink);
146174a9 2921#if Uid_t_size > IVSIZE
6e449a3a 2922 mPUSHn(PL_statcache.st_uid);
146174a9 2923#else
23dcd6c8 2924# if Uid_t_sign <= 0
6e449a3a 2925 mPUSHi(PL_statcache.st_uid);
23dcd6c8 2926# else
6e449a3a 2927 mPUSHu(PL_statcache.st_uid);
23dcd6c8 2928# endif
146174a9 2929#endif
301e8125 2930#if Gid_t_size > IVSIZE
6e449a3a 2931 mPUSHn(PL_statcache.st_gid);
146174a9 2932#else
23dcd6c8 2933# if Gid_t_sign <= 0
6e449a3a 2934 mPUSHi(PL_statcache.st_gid);
23dcd6c8 2935# else
6e449a3a 2936 mPUSHu(PL_statcache.st_gid);
23dcd6c8 2937# endif
146174a9 2938#endif
cbdc8872 2939#ifdef USE_STAT_RDEV
6e449a3a 2940 mPUSHi(PL_statcache.st_rdev);
cbdc8872 2941#else
84bafc02 2942 PUSHs(newSVpvs_flags("", SVs_TEMP));
cbdc8872 2943#endif
146174a9 2944#if Off_t_size > IVSIZE
6e449a3a 2945 mPUSHn(PL_statcache.st_size);
146174a9 2946#else
6e449a3a 2947 mPUSHi(PL_statcache.st_size);
146174a9 2948#endif
cbdc8872 2949#ifdef BIG_TIME
6e449a3a
MHM		 2950 mPUSHn(PL_statcache.st_atime);
2951 mPUSHn(PL_statcache.st_mtime);
2952 mPUSHn(PL_statcache.st_ctime);
cbdc8872 2953#else
6e449a3a
MHM		 2954 mPUSHi(PL_statcache.st_atime);
2955 mPUSHi(PL_statcache.st_mtime);
2956 mPUSHi(PL_statcache.st_ctime);
cbdc8872 2957#endif
a0d0e21e 2958#ifdef USE_STAT_BLOCKS
6e449a3a
MHM		 2959 mPUSHu(PL_statcache.st_blksize);
2960 mPUSHu(PL_statcache.st_blocks);
a0d0e21e 2961#else
84bafc02
NC		 2962 PUSHs(newSVpvs_flags("", SVs_TEMP));
2963 PUSHs(newSVpvs_flags("", SVs_TEMP));
a0d0e21e
LW		 2964#endif
2965 }
2966 RETURN;
2967}
2968
6f1401dc
DM		 2969#define tryAMAGICftest_MG(chr) STMT_START { \
2970 if ( (SvFLAGS(TOPs) & (SVf_ROK|SVs_GMG)) \
2971 && S_try_amagic_ftest(aTHX_ chr)) \
2972 return NORMAL; \
2973 } STMT_END
2974
2975STATIC bool
2976S_try_amagic_ftest(pTHX_ char chr) {
2977 dVAR;
2978 dSP;
2979 SV* const arg = TOPs;
2980
2981 assert(chr != '?');
2982 SvGETMAGIC(arg);
2983
2984 if ((PL_op->op_flags & OPf_KIDS)
2985 && SvAMAGIC(TOPs))
2986 {
2987 const char tmpchr = chr;
2988 const OP *next;
2989 SV * const tmpsv = amagic_call(arg,
2990 newSVpvn_flags(&tmpchr, 1, SVs_TEMP),
2991 ftest_amg, AMGf_unary);
2992
2993 if (!tmpsv)
2994 return FALSE;
2995
2996 SPAGAIN;
2997
2998 next = PL_op->op_next;
2999 if (next->op_type >= OP_FTRREAD &&
3000 next->op_type <= OP_FTBINARY &&
3001 next->op_private & OPpFT_STACKED
3002 ) {
3003 if (SvTRUE(tmpsv))
3004 /* leave the object alone */
3005 return TRUE;
3006 }
3007
3008 SETs(tmpsv);
3009 PUTBACK;
3010 return TRUE;
3011 }
3012 return FALSE;
3013}
3014
3015
fbb0b3b3
RGS		 3016/* This macro is used by the stacked filetest operators :
3017 * if the previous filetest failed, short-circuit and pass its value.
3018 * Else, discard it from the stack and continue. --rgs
3019 */
3020#define STACKED_FTEST_CHECK if (PL_op->op_private & OPpFT_STACKED) { \
d724f706 3021 if (!SvTRUE(TOPs)) { RETURN; } \
fbb0b3b3
RGS		 3022 else { (void)POPs; PUTBACK; } \
3023 }
3024
a0d0e21e
LW		 3025PP(pp_ftrread)
3026{
97aff369 3027 dVAR;
9cad6237 3028 I32 result;
af9e49b4
NC		 3029 /* Not const, because things tweak this below. Not bool, because there's
3030 no guarantee that OPp_FT_ACCESS is <= CHAR_MAX */
3031#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
3032 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
3033 /* Giving some sort of initial value silences compilers. */
3034# ifdef R_OK
3035 int access_mode = R_OK;
3036# else
3037 int access_mode = 0;
3038# endif
5ff3f7a4 3039#else
af9e49b4
NC		 3040 /* access_mode is never used, but leaving use_access in makes the
3041 conditional compiling below much clearer. */
3042 I32 use_access = 0;
5ff3f7a4 3043#endif
2dcac756 3044 Mode_t stat_mode = S_IRUSR;
a0d0e21e 3045
af9e49b4 3046 bool effective = FALSE;
07fe7c6a 3047 char opchar = '?';
2a3ff820 3048 dSP;
af9e49b4 3049
7fb13887
BM		 3050 switch (PL_op->op_type) {
3051 case OP_FTRREAD: opchar = 'R'; break;
3052 case OP_FTRWRITE: opchar = 'W'; break;
3053 case OP_FTREXEC: opchar = 'X'; break;
3054 case OP_FTEREAD: opchar = 'r'; break;
3055 case OP_FTEWRITE: opchar = 'w'; break;
3056 case OP_FTEEXEC: opchar = 'x'; break;
3057 }
6f1401dc 3058 tryAMAGICftest_MG(opchar);
7fb13887 3059
fbb0b3b3 3060 STACKED_FTEST_CHECK;
af9e49b4
NC		 3061
3062 switch (PL_op->op_type) {
3063 case OP_FTRREAD:
3064#if !(defined(HAS_ACCESS) && defined(R_OK))
3065 use_access = 0;
3066#endif
3067 break;
3068
3069 case OP_FTRWRITE:
5ff3f7a4 3070#if defined(HAS_ACCESS) && defined(W_OK)
af9e49b4 3071 access_mode = W_OK;
5ff3f7a4 3072#else
af9e49b4 3073 use_access = 0;
5ff3f7a4 3074#endif
af9e49b4
NC		 3075 stat_mode = S_IWUSR;
3076 break;
a0d0e21e 3077
af9e49b4 3078 case OP_FTREXEC:
5ff3f7a4 3079#if defined(HAS_ACCESS) && defined(X_OK)
af9e49b4 3080 access_mode = X_OK;
5ff3f7a4 3081#else
af9e49b4 3082 use_access = 0;
5ff3f7a4 3083#endif
af9e49b4
NC		 3084 stat_mode = S_IXUSR;
3085 break;
a0d0e21e 3086
af9e49b4 3087 case OP_FTEWRITE:
faee0e31 3088#ifdef PERL_EFF_ACCESS
af9e49b4 3089 access_mode = W_OK;
5ff3f7a4 3090#endif
af9e49b4 3091 stat_mode = S_IWUSR;
7fb13887 3092 /* fall through */
a0d0e21e 3093
af9e49b4
NC		 3094 case OP_FTEREAD:
3095#ifndef PERL_EFF_ACCESS
3096 use_access = 0;
3097#endif
3098 effective = TRUE;
3099 break;
3100
af9e49b4 3101 case OP_FTEEXEC:
faee0e31 3102#ifdef PERL_EFF_ACCESS
b376053d 3103 access_mode = X_OK;
5ff3f7a4 3104#else
af9e49b4 3105 use_access = 0;
5ff3f7a4 3106#endif
af9e49b4
NC		 3107 stat_mode = S_IXUSR;
3108 effective = TRUE;
3109 break;
3110 }
a0d0e21e 3111
af9e49b4
NC		 3112 if (use_access) {
3113#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2c2f35ab 3114 const char *name = POPpx;
af9e49b4
NC		 3115 if (effective) {
3116# ifdef PERL_EFF_ACCESS
3117 result = PERL_EFF_ACCESS(name, access_mode);
3118# else
3119 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
3120 OP_NAME(PL_op));
3121# endif
3122 }
3123 else {
3124# ifdef HAS_ACCESS
3125 result = access(name, access_mode);
3126# else
3127 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
3128# endif
3129 }
5ff3f7a4
GS		 3130 if (result == 0)
3131 RETPUSHYES;
3132 if (result < 0)
3133 RETPUSHUNDEF;
3134 RETPUSHNO;
af9e49b4 3135#endif
22865c03 3136 }
af9e49b4 3137
40c852de 3138 result = my_stat_flags(0);
22865c03 3139 SPAGAIN;
a0d0e21e
LW		 3140 if (result < 0)
3141 RETPUSHUNDEF;
af9e49b4 3142 if (cando(stat_mode, effective, &PL_statcache))
a0d0e21e
LW		 3143 RETPUSHYES;
3144 RETPUSHNO;
3145}
3146
3147PP(pp_ftis)
3148{
97aff369 3149 dVAR;
fbb0b3b3 3150 I32 result;
d7f0a2f4 3151 const int op_type = PL_op->op_type;
07fe7c6a 3152 char opchar = '?';
2a3ff820 3153 dSP;
07fe7c6a
BM		 3154
3155 switch (op_type) {
3156 case OP_FTIS: opchar = 'e'; break;
3157 case OP_FTSIZE: opchar = 's'; break;
3158 case OP_FTMTIME: opchar = 'M'; break;
3159 case OP_FTCTIME: opchar = 'C'; break;
3160 case OP_FTATIME: opchar = 'A'; break;
3161 }
6f1401dc 3162 tryAMAGICftest_MG(opchar);
07fe7c6a 3163
fbb0b3b3 3164 STACKED_FTEST_CHECK;
7fb13887 3165
40c852de 3166 result = my_stat_flags(0);
fbb0b3b3 3167 SPAGAIN;
a0d0e21e
LW		 3168 if (result < 0)
3169 RETPUSHUNDEF;
d7f0a2f4
NC		 3170 if (op_type == OP_FTIS)
3171 RETPUSHYES;
957b0e1d 3172 {
d7f0a2f4
NC		 3173 /* You can't dTARGET inside OP_FTIS, because you'll get
3174 "panic: pad_sv po" - the op is not flagged to have a target. */
957b0e1d 3175 dTARGET;
d7f0a2f4 3176 switch (op_type) {
957b0e1d
NC		 3177 case OP_FTSIZE:
3178#if Off_t_size > IVSIZE
3179 PUSHn(PL_statcache.st_size);
3180#else
3181 PUSHi(PL_statcache.st_size);
3182#endif
3183 break;
3184 case OP_FTMTIME:
3185 PUSHn( (((NV)PL_basetime - PL_statcache.st_mtime)) / 86400.0 );
3186 break;
3187 case OP_FTATIME:
3188 PUSHn( (((NV)PL_basetime - PL_statcache.st_atime)) / 86400.0 );
3189 break;
3190 case OP_FTCTIME:
3191 PUSHn( (((NV)PL_basetime - PL_statcache.st_ctime)) / 86400.0 );
3192 break;
3193 }
3194 }
3195 RETURN;
a0d0e21e
LW		 3196}
3197
a0d0e21e
LW		 3198PP(pp_ftrowned)
3199{
97aff369 3200 dVAR;
fbb0b3b3 3201 I32 result;
07fe7c6a 3202 char opchar = '?';
2a3ff820 3203 dSP;
17ad201a 3204
7fb13887
BM		 3205 switch (PL_op->op_type) {
3206 case OP_FTROWNED: opchar = 'O'; break;
3207 case OP_FTEOWNED: opchar = 'o'; break;
3208 case OP_FTZERO: opchar = 'z'; break;
3209 case OP_FTSOCK: opchar = 'S'; break;
3210 case OP_FTCHR: opchar = 'c'; break;
3211 case OP_FTBLK: opchar = 'b'; break;
3212 case OP_FTFILE: opchar = 'f'; break;
3213 case OP_FTDIR: opchar = 'd'; break;
3214 case OP_FTPIPE: opchar = 'p'; break;
3215 case OP_FTSUID: opchar = 'u'; break;
3216 case OP_FTSGID: opchar = 'g'; break;
3217 case OP_FTSVTX: opchar = 'k'; break;
3218 }
6f1401dc 3219 tryAMAGICftest_MG(opchar);
7fb13887 3220
1b0124a7
JD		 3221 STACKED_FTEST_CHECK;
3222
17ad201a
NC		 3223 /* I believe that all these three are likely to be defined on most every
3224 system these days. */
3225#ifndef S_ISUID
c410dd6a 3226 if(PL_op->op_type == OP_FTSUID) {
1b0124a7
JD		 3227 if ((PL_op->op_flags & OPf_REF) == 0 && (PL_op->op_private & OPpFT_STACKED) == 0)
3228 (void) POPs;
17ad201a 3229 RETPUSHNO;
c410dd6a 3230 }
17ad201a
NC		 3231#endif
3232#ifndef S_ISGID
c410dd6a 3233 if(PL_op->op_type == OP_FTSGID) {
1b0124a7
JD		 3234 if ((PL_op->op_flags & OPf_REF) == 0 && (PL_op->op_private & OPpFT_STACKED) == 0)
3235 (void) POPs;
17ad201a 3236 RETPUSHNO;
c410dd6a 3237 }
17ad201a
NC		 3238#endif
3239#ifndef S_ISVTX
c410dd6a 3240 if(PL_op->op_type == OP_FTSVTX) {
1b0124a7
JD		 3241 if ((PL_op->op_flags & OPf_REF) == 0 && (PL_op->op_private & OPpFT_STACKED) == 0)
3242 (void) POPs;
17ad201a 3243 RETPUSHNO;
c410dd6a 3244 }
17ad201a
NC		 3245#endif
3246
40c852de 3247 result = my_stat_flags(0);
fbb0b3b3 3248 SPAGAIN;
a0d0e21e
LW		 3249 if (result < 0)
3250 RETPUSHUNDEF;
f1cb2d48
NC		 3251 switch (PL_op->op_type) {
3252 case OP_FTROWNED:
9ab9fa88 3253 if (PL_statcache.st_uid == PL_uid)
f1cb2d48
NC		 3254 RETPUSHYES;
3255 break;
3256 case OP_FTEOWNED:
3257 if (PL_statcache.st_uid == PL_euid)
3258 RETPUSHYES;
3259 break;
3260 case OP_FTZERO:
3261 if (PL_statcache.st_size == 0)
3262 RETPUSHYES;
3263 break;
3264 case OP_FTSOCK:
3265 if (S_ISSOCK(PL_statcache.st_mode))
3266 RETPUSHYES;
3267 break;
3268 case OP_FTCHR:
3269 if (S_ISCHR(PL_statcache.st_mode))
3270 RETPUSHYES;
3271 break;
3272 case OP_FTBLK:
3273 if (S_ISBLK(PL_statcache.st_mode))
3274 RETPUSHYES;
3275 break;
3276 case OP_FTFILE:
3277 if (S_ISREG(PL_statcache.st_mode))
3278 RETPUSHYES;
3279 break;
3280 case OP_FTDIR:
3281 if (S_ISDIR(PL_statcache.st_mode))
3282 RETPUSHYES;
3283 break;
3284 case OP_FTPIPE:
3285 if (S_ISFIFO(PL_statcache.st_mode))
3286 RETPUSHYES;
3287 break;
a0d0e21e 3288#ifdef S_ISUID
17ad201a
NC		 3289 case OP_FTSUID:
3290 if (PL_statcache.st_mode & S_ISUID)
3291 RETPUSHYES;
3292 break;
a0d0e21e 3293#endif
a0d0e21e 3294#ifdef S_ISGID
17ad201a
NC		 3295 case OP_FTSGID:
3296 if (PL_statcache.st_mode & S_ISGID)
3297 RETPUSHYES;
3298 break;
3299#endif
3300#ifdef S_ISVTX
3301 case OP_FTSVTX:
3302 if (PL_statcache.st_mode & S_ISVTX)
3303 RETPUSHYES;
3304 break;
a0d0e21e 3305#endif
17ad201a 3306 }
a0d0e21e
LW		 3307 RETPUSHNO;
3308}
3309
17ad201a 3310PP(pp_ftlink)
a0d0e21e 3311{
97aff369 3312 dVAR;
39644a26 3313 dSP;
500ff13f 3314 I32 result;
07fe7c6a 3315
6f1401dc 3316 tryAMAGICftest_MG('l');
40c852de 3317 result = my_lstat_flags(0);
500ff13f
BM		 3318 SPAGAIN;
3319
a0d0e21e
LW		 3320 if (result < 0)
3321 RETPUSHUNDEF;
17ad201a 3322 if (S_ISLNK(PL_statcache.st_mode))
a0d0e21e 3323 RETPUSHYES;
a0d0e21e
LW		 3324 RETPUSHNO;
3325}
3326
3327PP(pp_fttty)
3328{
97aff369 3329 dVAR;
39644a26 3330 dSP;
a0d0e21e
LW		 3331 int fd;
3332 GV *gv;
a0714e2c 3333 SV *tmpsv = NULL;
0784aae0 3334 char *name = NULL;
40c852de 3335 STRLEN namelen;
fb73857a 3336
6f1401dc 3337 tryAMAGICftest_MG('t');
07fe7c6a 3338
fbb0b3b3
RGS		 3339 STACKED_FTEST_CHECK;
3340
533c011a 3341 if (PL_op->op_flags & OPf_REF)
146174a9 3342 gv = cGVOP_gv;
13be902c 3343 else if (isGV_with_GP(TOPs))
159b6efe 3344 gv = MUTABLE_GV(POPs);
fb73857a 3345 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
159b6efe 3346 gv = MUTABLE_GV(SvRV(POPs));
40c852de
DM		 3347 else {
3348 tmpsv = POPs;
3349 name = SvPV_nomg(tmpsv, namelen);
3350 gv = gv_fetchpvn_flags(name, namelen, SvUTF8(tmpsv), SVt_PVIO);
3351 }
fb73857a 3352
a0d0e21e 3353 if (GvIO(gv) && IoIFP(GvIOp(gv)))
760ac839 3354 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
7a5fd60d 3355 else if (tmpsv && SvOK(tmpsv)) {
40c852de
DM		 3356 if (isDIGIT(*name))
3357 fd = atoi(name);
7a5fd60d
NC		 3358 else
3359 RETPUSHUNDEF;
3360 }
a0d0e21e
LW		 3361 else
3362 RETPUSHUNDEF;
6ad3d225 3363 if (PerlLIO_isatty(fd))
a0d0e21e
LW		 3364 RETPUSHYES;
3365 RETPUSHNO;
3366}
3367
16d20bd9
AD		 3368#if defined(atarist) /* this will work with atariST. Configure will
3369 make guesses for other systems. */
3370# define FILE_base(f) ((f)->_base)
3371# define FILE_ptr(f) ((f)->_ptr)
3372# define FILE_cnt(f) ((f)->_cnt)
3373# define FILE_bufsiz(f) ((f)->_cnt + ((f)->_ptr - (f)->_base))
a0d0e21e
LW		 3374#endif
3375
3376PP(pp_fttext)
3377{
97aff369 3378 dVAR;
39644a26 3379 dSP;
a0d0e21e
LW		 3380 I32 i;
3381 I32 len;
3382 I32 odd = 0;
3383 STDCHAR tbuf[512];
3384 register STDCHAR *s;
3385 register IO *io;
5f05dabc 3386 register SV *sv;
3387 GV *gv;
146174a9 3388 PerlIO *fp;
a0d0e21e 3389
6f1401dc 3390 tryAMAGICftest_MG(PL_op->op_type == OP_FTTEXT ? 'T' : 'B');
07fe7c6a 3391
fbb0b3b3
RGS		 3392 STACKED_FTEST_CHECK;
3393
533c011a 3394 if (PL_op->op_flags & OPf_REF)
146174a9 3395 gv = cGVOP_gv;
13be902c 3396 else if (isGV_with_GP(TOPs))
159b6efe 3397 gv = MUTABLE_GV(POPs);
5f05dabc 3398 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
159b6efe 3399 gv = MUTABLE_GV(SvRV(POPs));
5f05dabc 3400 else
a0714e2c 3401 gv = NULL;
5f05dabc 3402
3403 if (gv) {
a0d0e21e 3404 EXTEND(SP, 1);
3280af22
NIS		 3405 if (gv == PL_defgv) {
3406 if (PL_statgv)
3407 io = GvIO(PL_statgv);
a0d0e21e 3408 else {
3280af22 3409 sv = PL_statname;
a0d0e21e
LW		 3410 goto really_filename;
3411 }
3412 }
3413 else {
3280af22
NIS		 3414 PL_statgv = gv;
3415 PL_laststatval = -1;
76f68e9b 3416 sv_setpvs(PL_statname, "");
3280af22 3417 io = GvIO(PL_statgv);
a0d0e21e
LW		 3418 }
3419 if (io && IoIFP(io)) {
5f05dabc 3420 if (! PerlIO_has_base(IoIFP(io)))