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
Yitzchak points out that the perldiag entry for "Integer overflow in
[perl5.git] / pp_sys.c
CommitLineData
a0d0e21e
LW		 1/* pp_sys.c
2 *
4bb101f2 3 * Copyright (C) 1995, 1996, 1997, 1998, 1999,
359e8da2 4 * 2000, 2001, 2002, 2003, 2004, 2005, 2006, 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.
16 */
17
166f8a29
DM		 18/* This file contains system pp ("push/pop") functions that
19 * execute the opcodes that make up a perl program. A typical pp function
20 * expects to find its arguments on the stack, and usually pushes its
21 * results onto the stack, hence the 'pp' terminology. Each OP structure
22 * contains a pointer to the relevant pp_foo() function.
23 *
24 * By 'system', we mean ops which interact with the OS, such as pp_open().
25 */
26
a0d0e21e 27#include "EXTERN.h"
864dbfa3 28#define PERL_IN_PP_SYS_C
a0d0e21e
LW		 29#include "perl.h"
30
f1066039
JH		 31#ifdef I_SHADOW
32/* Shadow password support for solaris - pdo@cs.umd.edu
33 * Not just Solaris: at least HP-UX, IRIX, Linux.
3813c136
JH		 34 * The API is from SysV.
35 *
36 * There are at least two more shadow interfaces,
37 * see the comments in pp_gpwent().
38 *
39 * --jhi */
40# ifdef __hpux__
c529f79d 41/* There is a MAXINT coming from <shadow.h> <- <hpsecurity.h> <- <values.h>
301e8125 42 * and another MAXINT from "perl.h" <- <sys/param.h>. */
3813c136
JH		 43# undef MAXINT
44# endif
45# include <shadow.h>
8c0bfa08
PB		 46#endif
47
76c32331 48#ifdef I_SYS_WAIT
49# include <sys/wait.h>
50#endif
51
52#ifdef I_SYS_RESOURCE
53# include <sys/resource.h>
16d20bd9 54#endif
a0d0e21e 55
2986a63f
JH		 56#ifdef NETWARE
57NETDB_DEFINE_CONTEXT
58#endif
59
a0d0e21e 60#ifdef HAS_SELECT
1e743fda
JH		 61# ifdef I_SYS_SELECT
62# include <sys/select.h>
63# endif
a0d0e21e 64#endif
a0d0e21e 65
dc45a647
MB		 66/* XXX Configure test needed.
67 h_errno might not be a simple 'int', especially for multi-threaded
5ff3f7a4
GS		 68 applications, see "extern int errno in perl.h". Creating such
69 a test requires taking into account the differences between
70 compiling multithreaded and singlethreaded ($ccflags et al).
71 HOST_NOT_FOUND is typically defined in <netdb.h>.
dc45a647 72*/
cb50131a 73#if defined(HOST_NOT_FOUND) && !defined(h_errno) && !defined(__CYGWIN__)
a0d0e21e
LW		 74extern int h_errno;
75#endif
76
77#ifdef HAS_PASSWD
78# ifdef I_PWD
79# include <pwd.h>
80# else
fd8cd3a3 81# if !defined(VMS)
20ce7b12
GS		 82 struct passwd *getpwnam (char *);
83 struct passwd *getpwuid (Uid_t);
fd8cd3a3 84# endif
a0d0e21e 85# endif
28e8609d 86# ifdef HAS_GETPWENT
10bc17b6 87#ifndef getpwent
20ce7b12 88 struct passwd *getpwent (void);
c2a8f790 89#elif defined (VMS) && defined (my_getpwent)
9fa802f3 90 struct passwd *Perl_my_getpwent (pTHX);
10bc17b6 91#endif
28e8609d 92# endif
a0d0e21e
LW		 93#endif
94
95#ifdef HAS_GROUP
96# ifdef I_GRP
97# include <grp.h>
98# else
20ce7b12
GS		 99 struct group *getgrnam (char *);
100 struct group *getgrgid (Gid_t);
a0d0e21e 101# endif
28e8609d 102# ifdef HAS_GETGRENT
10bc17b6 103#ifndef getgrent
20ce7b12 104 struct group *getgrent (void);
10bc17b6 105#endif
28e8609d 106# endif
a0d0e21e
LW		 107#endif
108
109#ifdef I_UTIME
3730b96e 110# if defined(_MSC_VER) || defined(__MINGW32__)
3fe9a6f1 111# include <sys/utime.h>
112# else
113# include <utime.h>
114# endif
a0d0e21e 115#endif
a0d0e21e 116
cbdc8872 117#ifdef HAS_CHSIZE
cd52b7b2 118# ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
119# undef my_chsize
120# endif
72cc7e2a 121# define my_chsize PerlLIO_chsize
27da23d5
JH		 122#else
123# ifdef HAS_TRUNCATE
124# define my_chsize PerlLIO_chsize
125# else
126I32 my_chsize(int fd, Off_t length);
127# endif
cbdc8872 128#endif
129
ff68c719 130#ifdef HAS_FLOCK
131# define FLOCK flock
132#else /* no flock() */
133
36477c24 134 /* fcntl.h might not have been included, even if it exists, because
135 the current Configure only sets I_FCNTL if it's needed to pick up
136 the *_OK constants. Make sure it has been included before testing
137 the fcntl() locking constants. */
138# if defined(HAS_FCNTL) && !defined(I_FCNTL)
139# include <fcntl.h>
140# endif
141
9d9004a9 142# if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
ff68c719 143# define FLOCK fcntl_emulate_flock
144# define FCNTL_EMULATE_FLOCK
145# else /* no flock() or fcntl(F_SETLK,...) */
146# ifdef HAS_LOCKF
147# define FLOCK lockf_emulate_flock
148# define LOCKF_EMULATE_FLOCK
149# endif /* lockf */
150# endif /* no flock() or fcntl(F_SETLK,...) */
151
152# ifdef FLOCK
20ce7b12 153 static int FLOCK (int, int);
ff68c719 154
155 /*
156 * These are the flock() constants. Since this sytems doesn't have
157 * flock(), the values of the constants are probably not available.
158 */
159# ifndef LOCK_SH
160# define LOCK_SH 1
161# endif
162# ifndef LOCK_EX
163# define LOCK_EX 2
164# endif
165# ifndef LOCK_NB
166# define LOCK_NB 4
167# endif
168# ifndef LOCK_UN
169# define LOCK_UN 8
170# endif
171# endif /* emulating flock() */
172
173#endif /* no flock() */
55497cff 174
85ab1d1d 175#define ZBTLEN 10
27da23d5 176static const char zero_but_true[ZBTLEN + 1] = "0 but true";
85ab1d1d 177
5ff3f7a4
GS		 178#if defined(I_SYS_ACCESS) && !defined(R_OK)
179# include <sys/access.h>
180#endif
181
c529f79d
CB		 182#if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
183# define FD_CLOEXEC 1 /* NeXT needs this */
184#endif
185
a4af207c
JH		 186#include "reentr.h"
187
9cffb111
OS		 188#ifdef __Lynx__
189/* Missing protos on LynxOS */
190void sethostent(int);
191void endhostent(void);
192void setnetent(int);
193void endnetent(void);
194void setprotoent(int);
195void endprotoent(void);
196void setservent(int);
197void endservent(void);
198#endif
199
faee0e31 200#undef PERL_EFF_ACCESS /* EFFective uid/gid ACCESS */
5ff3f7a4 201
a4323dee
MB		 202/* AIX 5.2 and below use mktime for localtime, and defines the edge case
203 * for time 0x7fffffff to be valid only in UTC. AIX 5.3 provides localtime64
204 * available in the 32bit environment, which could warrant Configure
205 * checks in the future.
206 */
207#ifdef _AIX
208#define LOCALTIME_EDGECASE_BROKEN
209#endif
210
5ff3f7a4
GS		 211/* F_OK unused: if stat() cannot find it... */
212
d7558cad 213#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
c955f117 214 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
d7558cad 215# define PERL_EFF_ACCESS(p,f) (access((p), (f) | EFF_ONLY_OK))
5ff3f7a4
GS		 216#endif
217
d7558cad 218#if !defined(PERL_EFF_ACCESS) && defined(HAS_EACCESS)
3813c136 219# ifdef I_SYS_SECURITY
5ff3f7a4
GS		 220# include <sys/security.h>
221# endif
c955f117
JH		 222# ifdef ACC_SELF
223 /* HP SecureWare */
d7558cad 224# define PERL_EFF_ACCESS(p,f) (eaccess((p), (f), ACC_SELF))
c955f117
JH		 225# else
226 /* SCO */
d7558cad 227# define PERL_EFF_ACCESS(p,f) (eaccess((p), (f)))
c955f117 228# endif
5ff3f7a4
GS		 229#endif
230
d7558cad 231#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESSX) && defined(ACC_SELF)
c955f117 232 /* AIX */
d7558cad 233# define PERL_EFF_ACCESS(p,f) (accessx((p), (f), ACC_SELF))
5ff3f7a4
GS		 234#endif
235
d7558cad
NC		 236
237#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) \
327c3667
GS		 238 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
239 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
5ff3f7a4 240/* The Hard Way. */
327c3667 241STATIC int
7f4774ae 242S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
ba106d47 243{
c4420975
AL		 244 const Uid_t ruid = getuid();
245 const Uid_t euid = geteuid();
246 const Gid_t rgid = getgid();
247 const Gid_t egid = getegid();
5ff3f7a4
GS		 248 int res;
249
146174a9 250 LOCK_CRED_MUTEX;
5ff3f7a4 251#if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
cea2e8a9 252 Perl_croak(aTHX_ "switching effective uid is not implemented");
5ff3f7a4
GS		 253#else
254#ifdef HAS_SETREUID
255 if (setreuid(euid, ruid))
256#else
257#ifdef HAS_SETRESUID
258 if (setresuid(euid, ruid, (Uid_t)-1))
259#endif
260#endif
cea2e8a9 261 Perl_croak(aTHX_ "entering effective uid failed");
5ff3f7a4
GS		 262#endif
263
264#if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
cea2e8a9 265 Perl_croak(aTHX_ "switching effective gid is not implemented");
5ff3f7a4
GS		 266#else
267#ifdef HAS_SETREGID
268 if (setregid(egid, rgid))
269#else
270#ifdef HAS_SETRESGID
271 if (setresgid(egid, rgid, (Gid_t)-1))
272#endif
273#endif
cea2e8a9 274 Perl_croak(aTHX_ "entering effective gid failed");
5ff3f7a4
GS		 275#endif
276
277 res = access(path, mode);
278
279#ifdef HAS_SETREUID
280 if (setreuid(ruid, euid))
281#else
282#ifdef HAS_SETRESUID
283 if (setresuid(ruid, euid, (Uid_t)-1))
284#endif
285#endif
cea2e8a9 286 Perl_croak(aTHX_ "leaving effective uid failed");
5ff3f7a4
GS		 287
288#ifdef HAS_SETREGID
289 if (setregid(rgid, egid))
290#else
291#ifdef HAS_SETRESGID
292 if (setresgid(rgid, egid, (Gid_t)-1))
293#endif
294#endif
cea2e8a9 295 Perl_croak(aTHX_ "leaving effective gid failed");
146174a9 296 UNLOCK_CRED_MUTEX;
5ff3f7a4
GS		 297
298 return res;
299}
d7558cad 300# define PERL_EFF_ACCESS(p,f) (emulate_eaccess((p), (f)))
5ff3f7a4
GS		 301#endif
302
faee0e31 303#if !defined(PERL_EFF_ACCESS)
76ffd3b9
IZ		 304/* With it or without it: anyway you get a warning: either that
305 it is unused, or it is declared static and never defined.
306 */
327c3667 307STATIC int
7f4774ae 308S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
ba106d47 309{
294a48e9
AL		 310 PERL_UNUSED_ARG(path);
311 PERL_UNUSED_ARG(mode);
cea2e8a9 312 Perl_croak(aTHX_ "switching effective uid is not implemented");
5ff3f7a4
GS		 313 /*NOTREACHED*/
314 return -1;
315}
316#endif
317
a0d0e21e
LW		 318PP(pp_backtick)
319{
97aff369 320 dVAR; dSP; dTARGET;
760ac839 321 PerlIO *fp;
1b6737cc 322 const char * const tmps = POPpconstx;
f54cb97a 323 const I32 gimme = GIMME_V;
e1ec3a88 324 const char *mode = "r";
54310121 325
a0d0e21e 326 TAINT_PROPER("``");
16fe6d59
GS		 327 if (PL_op->op_private & OPpOPEN_IN_RAW)
328 mode = "rb";
329 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
330 mode = "rt";
2fbb330f 331 fp = PerlProc_popen(tmps, mode);
a0d0e21e 332 if (fp) {
7452cf6a 333 const char * const type = PL_curcop->cop_io ? SvPV_nolen_const(PL_curcop->cop_io) : NULL;
ac27b0f5
NIS		 334 if (type && *type)
335 PerlIO_apply_layers(aTHX_ fp,mode,type);
336
54310121 337 if (gimme == G_VOID) {
96827780
MB		 338 char tmpbuf[256];
339 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
54310121 340 ;
341 }
342 else if (gimme == G_SCALAR) {
75af1a9c
DM		 343 ENTER;
344 SAVESPTR(PL_rs);
fa326138 345 PL_rs = &PL_sv_undef;
c69006e4 346 sv_setpvn(TARG, "", 0); /* note that this preserves previous buffer */
bd61b366 347 while (sv_gets(TARG, fp, SvCUR(TARG)) != NULL)
a0d0e21e 348 ;
75af1a9c 349 LEAVE;
a0d0e21e 350 XPUSHs(TARG);
aa689395 351 SvTAINTED_on(TARG);
a0d0e21e
LW		 352 }
353 else {
a0d0e21e 354 for (;;) {
561b68a9 355 SV * const sv = newSV(79);
bd61b366 356 if (sv_gets(sv, fp, 0) == NULL) {
a0d0e21e
LW		 357 SvREFCNT_dec(sv);
358 break;
359 }
360 XPUSHs(sv_2mortal(sv));
361 if (SvLEN(sv) - SvCUR(sv) > 20) {
1da4ca5f 362 SvPV_shrink_to_cur(sv);
a0d0e21e 363 }
aa689395 364 SvTAINTED_on(sv);
a0d0e21e
LW		 365 }
366 }
2fbb330f 367 STATUS_NATIVE_CHILD_SET(PerlProc_pclose(fp));
aa689395 368 TAINT; /* "I believe that this is not gratuitous!" */
a0d0e21e
LW		 369 }
370 else {
37038d91 371 STATUS_NATIVE_CHILD_SET(-1);
54310121 372 if (gimme == G_SCALAR)
a0d0e21e
LW		 373 RETPUSHUNDEF;
374 }
375
376 RETURN;
377}
378
379PP(pp_glob)
380{
27da23d5 381 dVAR;
a0d0e21e 382 OP *result;
f5284f61
IZ		 383 tryAMAGICunTARGET(iter, -1);
384
71686f12
GS		 385 /* Note that we only ever get here if File::Glob fails to load
386 * without at the same time croaking, for some reason, or if
387 * perl was built with PERL_EXTERNAL_GLOB */
388
a0d0e21e 389 ENTER;
a0d0e21e 390
c90c0ff4 391#ifndef VMS
3280af22 392 if (PL_tainting) {
7bac28a0 393 /*
394 * The external globbing program may use things we can't control,
395 * so for security reasons we must assume the worst.
396 */
397 TAINT;
22c35a8c 398 taint_proper(PL_no_security, "glob");
7bac28a0 399 }
c90c0ff4 400#endif /* !VMS */
7bac28a0 401
3280af22
NIS		 402 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
403 PL_last_in_gv = (GV*)*PL_stack_sp--;
a0d0e21e 404
3280af22 405 SAVESPTR(PL_rs); /* This is not permanent, either. */
396482e1 406 PL_rs = sv_2mortal(newSVpvs("\000"));
c07a80fd 407#ifndef DOSISH
408#ifndef CSH
6b88bc9c 409 *SvPVX(PL_rs) = '\n';
a0d0e21e 410#endif /* !CSH */
55497cff 411#endif /* !DOSISH */
c07a80fd 412
a0d0e21e
LW		 413 result = do_readline();
414 LEAVE;
415 return result;
416}
417
a0d0e21e
LW		 418PP(pp_rcatline)
419{
97aff369 420 dVAR;
146174a9 421 PL_last_in_gv = cGVOP_gv;
a0d0e21e
LW		 422 return do_readline();
423}
424
425PP(pp_warn)
426{
97aff369 427 dVAR; dSP; dMARK;
06bf62c7 428 SV *tmpsv;
e1ec3a88 429 const char *tmps;
06bf62c7 430 STRLEN len;
b59aed67 431 if (SP - MARK > 1) {
a0d0e21e 432 dTARGET;
3280af22 433 do_join(TARG, &PL_sv_no, MARK, SP);
06bf62c7 434 tmpsv = TARG;
a0d0e21e
LW		 435 SP = MARK + 1;
436 }
b59aed67
TS		 437 else if (SP == MARK) {
438 tmpsv = &PL_sv_no;
439 EXTEND(SP, 1);
440 }
a0d0e21e 441 else {
06bf62c7 442 tmpsv = TOPs;
a0d0e21e 443 }
e62f0680 444 tmps = SvPV_const(tmpsv, len);
7b102d90 445 if ((!tmps || !len) && PL_errgv) {
1b6737cc 446 SV * const error = ERRSV;
862a34c6 447 SvUPGRADE(error, SVt_PV);
4e6ea2c3 448 if (SvPOK(error) && SvCUR(error))
396482e1 449 sv_catpvs(error, "\t...caught");
06bf62c7 450 tmpsv = error;
e62f0680 451 tmps = SvPV_const(tmpsv, len);
a0d0e21e 452 }
06bf62c7 453 if (!tmps || !len)
396482e1 454 tmpsv = sv_2mortal(newSVpvs("Warning: something's wrong"));
06bf62c7 455
cb50131a 456 Perl_warn(aTHX_ "%"SVf, tmpsv);
a0d0e21e
LW		 457 RETSETYES;
458}
459
460PP(pp_die)
461{
97aff369 462 dVAR; dSP; dMARK;
e1ec3a88 463 const char *tmps;
06bf62c7
GS		 464 SV *tmpsv;
465 STRLEN len;
466 bool multiarg = 0;
96e176bf
CL		 467#ifdef VMS
468 VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
469#endif
a0d0e21e
LW		 470 if (SP - MARK != 1) {
471 dTARGET;
3280af22 472 do_join(TARG, &PL_sv_no, MARK, SP);
06bf62c7 473 tmpsv = TARG;
5c144d81 474 tmps = SvPV_const(tmpsv, len);
06bf62c7 475 multiarg = 1;
a0d0e21e
LW		 476 SP = MARK + 1;
477 }
478 else {
4e6ea2c3 479 tmpsv = TOPs;
bd61b366 480 tmps = SvROK(tmpsv) ? NULL : SvPV_const(tmpsv, len);
a0d0e21e 481 }
06bf62c7 482 if (!tmps || !len) {
0bcc34c2 483 SV * const error = ERRSV;
862a34c6 484 SvUPGRADE(error, SVt_PV);
06bf62c7
GS		 485 if (multiarg ? SvROK(error) : SvROK(tmpsv)) {
486 if (!multiarg)
4e6ea2c3 487 SvSetSV(error,tmpsv);
06bf62c7 488 else if (sv_isobject(error)) {
7452cf6a
AL		 489 HV * const stash = SvSTASH(SvRV(error));
490 GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
05423cc9 491 if (gv) {
7452cf6a
AL		 492 SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
493 SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
05423cc9
GS		 494 EXTEND(SP, 3);
495 PUSHMARK(SP);
496 PUSHs(error);
497 PUSHs(file);
498 PUSHs(line);
499 PUTBACK;
864dbfa3
GS		 500 call_sv((SV*)GvCV(gv),
501 G_SCALAR|G_EVAL|G_KEEPERR);
3280af22 502 sv_setsv(error,*PL_stack_sp--);
05423cc9
GS		 503 }
504 }
bd61b366 505 DIE(aTHX_ NULL);
4e6ea2c3
GS		 506 }
507 else {
508 if (SvPOK(error) && SvCUR(error))
396482e1 509 sv_catpvs(error, "\t...propagated");
06bf62c7 510 tmpsv = error;
dc8d642c
DM		 511 if (SvOK(tmpsv))
512 tmps = SvPV_const(tmpsv, len);
513 else
bd61b366 514 tmps = NULL;
4e6ea2c3 515 }
a0d0e21e 516 }
06bf62c7 517 if (!tmps || !len)
396482e1 518 tmpsv = sv_2mortal(newSVpvs("Died"));
06bf62c7 519
cb50131a 520 DIE(aTHX_ "%"SVf, tmpsv);
a0d0e21e
LW		 521}
522
523/* I/O. */
524
525PP(pp_open)
526{
27da23d5 527 dVAR; dSP;
a567e93b
NIS		 528 dMARK; dORIGMARK;
529 dTARGET;
a0d0e21e 530 SV *sv;
5b468f54 531 IO *io;
5c144d81 532 const char *tmps;
a0d0e21e 533 STRLEN len;
a567e93b 534 bool ok;
a0d0e21e 535
c4420975
AL		 536 GV * const gv = (GV *)*++MARK;
537
5f05dabc 538 if (!isGV(gv))
cea2e8a9 539 DIE(aTHX_ PL_no_usym, "filehandle");
5b468f54 540 if ((io = GvIOp(gv)))
36477c24 541 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
853846ea 542
c4420975
AL		 543 if (io) {
544 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
545 if (mg) {
546 /* Method's args are same as ours ... */
547 /* ... except handle is replaced by the object */
548 *MARK-- = SvTIED_obj((SV*)io, mg);
549 PUSHMARK(MARK);
550 PUTBACK;
551 ENTER;
552 call_method("OPEN", G_SCALAR);
553 LEAVE;
554 SPAGAIN;
555 RETURN;
556 }
4592e6ca
NIS		 557 }
558
a567e93b
NIS		 559 if (MARK < SP) {
560 sv = *++MARK;
561 }
562 else {
35a08ec7 563 sv = GvSVn(gv);
a567e93b
NIS		 564 }
565
5c144d81 566 tmps = SvPV_const(sv, len);
2fbb330f 567 ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, Nullfp, MARK+1, (SP-MARK));
a567e93b
NIS		 568 SP = ORIGMARK;
569 if (ok)
3280af22
NIS		 570 PUSHi( (I32)PL_forkprocess );
571 else if (PL_forkprocess == 0) /* we are a new child */
a0d0e21e
LW		 572 PUSHi(0);
573 else
574 RETPUSHUNDEF;
575 RETURN;
576}
577
578PP(pp_close)
579{
27da23d5 580 dVAR; dSP;
5b468f54 581 IO *io;
1d603a67 582 MAGIC *mg;
c4420975 583 GV * const gv = (MAXARG == 0) ? PL_defoutgv : (GV*)POPs;
1d603a67 584
5b468f54
AMS		 585 if (gv && (io = GvIO(gv))
586 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
587 {
1d603a67 588 PUSHMARK(SP);
5b468f54 589 XPUSHs(SvTIED_obj((SV*)io, mg));
1d603a67
GB		 590 PUTBACK;
591 ENTER;
864dbfa3 592 call_method("CLOSE", G_SCALAR);
1d603a67
GB		 593 LEAVE;
594 SPAGAIN;
595 RETURN;
596 }
a0d0e21e 597 EXTEND(SP, 1);
54310121 598 PUSHs(boolSV(do_close(gv, TRUE)));
a0d0e21e
LW		 599 RETURN;
600}
601
602PP(pp_pipe_op)
603{
a0d0e21e 604#ifdef HAS_PIPE
97aff369 605 dVAR;
9cad6237 606 dSP;
a0d0e21e
LW		 607 register IO *rstio;
608 register IO *wstio;
609 int fd[2];
610
c4420975
AL		 611 GV * const wgv = (GV*)POPs;
612 GV * const rgv = (GV*)POPs;
a0d0e21e
LW		 613
614 if (!rgv || !wgv)
615 goto badexit;
616
4633a7c4 617 if (SvTYPE(rgv) != SVt_PVGV || SvTYPE(wgv) != SVt_PVGV)
cea2e8a9 618 DIE(aTHX_ PL_no_usym, "filehandle");
a0d0e21e
LW		 619 rstio = GvIOn(rgv);
620 wstio = GvIOn(wgv);
621
622 if (IoIFP(rstio))
623 do_close(rgv, FALSE);
624 if (IoIFP(wstio))
625 do_close(wgv, FALSE);
626
6ad3d225 627 if (PerlProc_pipe(fd) < 0)
a0d0e21e
LW		 628 goto badexit;
629
460c8493
IZ		 630 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
631 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
b5ac89c3 632 IoOFP(rstio) = IoIFP(rstio);
a0d0e21e 633 IoIFP(wstio) = IoOFP(wstio);
50952442
JH		 634 IoTYPE(rstio) = IoTYPE_RDONLY;
635 IoTYPE(wstio) = IoTYPE_WRONLY;
a0d0e21e
LW		 636
637 if (!IoIFP(rstio) || !IoOFP(wstio)) {
760ac839 638 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
6ad3d225 639 else PerlLIO_close(fd[0]);
760ac839 640 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
6ad3d225 641 else PerlLIO_close(fd[1]);
a0d0e21e
LW		 642 goto badexit;
643 }
4771b018
GS		 644#if defined(HAS_FCNTL) && defined(F_SETFD)
645 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
646 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
647#endif
a0d0e21e
LW		 648 RETPUSHYES;
649
650badexit:
651 RETPUSHUNDEF;
652#else
cea2e8a9 653 DIE(aTHX_ PL_no_func, "pipe");
a0d0e21e
LW		 654#endif
655}
656
657PP(pp_fileno)
658{
27da23d5 659 dVAR; dSP; dTARGET;
a0d0e21e
LW		 660 GV *gv;
661 IO *io;
760ac839 662 PerlIO *fp;
4592e6ca
NIS		 663 MAGIC *mg;
664
a0d0e21e
LW		 665 if (MAXARG < 1)
666 RETPUSHUNDEF;
667 gv = (GV*)POPs;
4592e6ca 668
5b468f54
AMS		 669 if (gv && (io = GvIO(gv))
670 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
671 {
4592e6ca 672 PUSHMARK(SP);
5b468f54 673 XPUSHs(SvTIED_obj((SV*)io, mg));
4592e6ca
NIS		 674 PUTBACK;
675 ENTER;
864dbfa3 676 call_method("FILENO", G_SCALAR);
4592e6ca
NIS		 677 LEAVE;
678 SPAGAIN;
679 RETURN;
680 }
681
c289d2f7
JH		 682 if (!gv || !(io = GvIO(gv)) || !(fp = IoIFP(io))) {
683 /* Can't do this because people seem to do things like
684 defined(fileno($foo)) to check whether $foo is a valid fh.
685 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
686 report_evil_fh(gv, io, PL_op->op_type);
687 */
a0d0e21e 688 RETPUSHUNDEF;
c289d2f7
JH		 689 }
690
760ac839 691 PUSHi(PerlIO_fileno(fp));
a0d0e21e
LW		 692 RETURN;
693}
694
695PP(pp_umask)
696{
97aff369 697 dVAR;
27da23d5 698 dSP;
d7e492a4 699#ifdef HAS_UMASK
27da23d5 700 dTARGET;
761237fe 701 Mode_t anum;
a0d0e21e 702
a0d0e21e 703 if (MAXARG < 1) {
6ad3d225
GS		 704 anum = PerlLIO_umask(0);
705 (void)PerlLIO_umask(anum);
a0d0e21e
LW		 706 }
707 else
6ad3d225 708 anum = PerlLIO_umask(POPi);
a0d0e21e
LW		 709 TAINT_PROPER("umask");
710 XPUSHi(anum);
711#else
a0288114 712 /* Only DIE if trying to restrict permissions on "user" (self).
eec2d3df
GS		 713 * Otherwise it's harmless and more useful to just return undef
714 * since 'group' and 'other' concepts probably don't exist here. */
715 if (MAXARG >= 1 && (POPi & 0700))
cea2e8a9 716 DIE(aTHX_ "umask not implemented");
6b88bc9c 717 XPUSHs(&PL_sv_undef);
a0d0e21e
LW		 718#endif
719 RETURN;
720}
721
722PP(pp_binmode)
723{
27da23d5 724 dVAR; dSP;
a0d0e21e
LW		 725 GV *gv;
726 IO *io;
760ac839 727 PerlIO *fp;
4592e6ca 728 MAGIC *mg;
a0714e2c 729 SV *discp = NULL;
a0d0e21e
LW		 730
731 if (MAXARG < 1)
732 RETPUSHUNDEF;
60382766 733 if (MAXARG > 1) {
16fe6d59 734 discp = POPs;
60382766 735 }
a0d0e21e 736
301e8125 737 gv = (GV*)POPs;
4592e6ca 738
5b468f54
AMS		 739 if (gv && (io = GvIO(gv))
740 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
741 {
4592e6ca 742 PUSHMARK(SP);
5b468f54 743 XPUSHs(SvTIED_obj((SV*)io, mg));
16fe6d59
GS		 744 if (discp)
745 XPUSHs(discp);
4592e6ca
NIS		 746 PUTBACK;
747 ENTER;
864dbfa3 748 call_method("BINMODE", G_SCALAR);
4592e6ca
NIS		 749 LEAVE;
750 SPAGAIN;
751 RETURN;
752 }
a0d0e21e
LW		 753
754 EXTEND(SP, 1);
50f846a7 755 if (!(io = GvIO(gv)) || !(fp = IoIFP(io))) {
c289d2f7
JH		 756 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
757 report_evil_fh(gv, io, PL_op->op_type);
b5fe5ca2 758 SETERRNO(EBADF,RMS_IFI);
50f846a7
SC		 759 RETPUSHUNDEF;
760 }
a0d0e21e 761
40d98b49 762 PUTBACK;
60382766 763 if (PerlIO_binmode(aTHX_ fp,IoTYPE(io),mode_from_discipline(discp),
bd61b366 764 (discp) ? SvPV_nolen_const(discp) : NULL)) {
38af81ff
JH		 765 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
766 if (!PerlIO_binmode(aTHX_ IoOFP(io),IoTYPE(io),
767 mode_from_discipline(discp),
bd61b366 768 (discp) ? SvPV_nolen_const(discp) : NULL)) {
38af81ff
JH		 769 SPAGAIN;
770 RETPUSHUNDEF;
771 }
772 }
40d98b49 773 SPAGAIN;
a0d0e21e 774 RETPUSHYES;
40d98b49
JH		 775 }
776 else {
777 SPAGAIN;
a0d0e21e 778 RETPUSHUNDEF;
40d98b49 779 }
a0d0e21e
LW		 780}
781
782PP(pp_tie)
783{
27da23d5 784 dVAR; dSP; dMARK;
a0d0e21e
LW		 785 HV* stash;
786 GV *gv;
a0d0e21e 787 SV *sv;
1df70142 788 const I32 markoff = MARK - PL_stack_base;
e1ec3a88 789 const char *methname;
14befaf4 790 int how = PERL_MAGIC_tied;
e336de0d 791 U32 items;
c4420975 792 SV *varsv = *++MARK;
a0d0e21e 793
6b05c17a
NIS		 794 switch(SvTYPE(varsv)) {
795 case SVt_PVHV:
796 methname = "TIEHASH";
bfcb3514 797 HvEITER_set((HV *)varsv, 0);
6b05c17a
NIS		 798 break;
799 case SVt_PVAV:
800 methname = "TIEARRAY";
801 break;
802 case SVt_PVGV:
7fb37951
AMS		 803#ifdef GV_UNIQUE_CHECK
804 if (GvUNIQUE((GV*)varsv)) {
805 Perl_croak(aTHX_ "Attempt to tie unique GV");
5bd07a3d
DM		 806 }
807#endif
6b05c17a 808 methname = "TIEHANDLE";
14befaf4 809 how = PERL_MAGIC_tiedscalar;
5b468f54
AMS		 810 /* For tied filehandles, we apply tiedscalar magic to the IO
811 slot of the GP rather than the GV itself. AMS 20010812 */
812 if (!GvIOp(varsv))
813 GvIOp(varsv) = newIO();
814 varsv = (SV *)GvIOp(varsv);
6b05c17a
NIS		 815 break;
816 default:
817 methname = "TIESCALAR";
14befaf4 818 how = PERL_MAGIC_tiedscalar;
6b05c17a
NIS		 819 break;
820 }
e336de0d
GS		 821 items = SP - MARK++;
822 if (sv_isobject(*MARK)) {
6b05c17a 823 ENTER;
e788e7d3 824 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 825 PUSHMARK(SP);
eb160463 826 EXTEND(SP,(I32)items);
e336de0d
GS		 827 while (items--)
828 PUSHs(*MARK++);
829 PUTBACK;
864dbfa3 830 call_method(methname, G_SCALAR);
301e8125 831 }
6b05c17a 832 else {
864dbfa3 833 /* Not clear why we don't call call_method here too.
6b05c17a
NIS		 834 * perhaps to get different error message ?
835 */
e336de0d 836 stash = gv_stashsv(*MARK, FALSE);
6b05c17a 837 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
35c1215d
NC		 838 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
839 methname, *MARK);
6b05c17a
NIS		 840 }
841 ENTER;
e788e7d3 842 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 843 PUSHMARK(SP);
eb160463 844 EXTEND(SP,(I32)items);
e336de0d
GS		 845 while (items--)
846 PUSHs(*MARK++);
847 PUTBACK;
864dbfa3 848 call_sv((SV*)GvCV(gv), G_SCALAR);
6b05c17a 849 }
a0d0e21e
LW		 850 SPAGAIN;
851
852 sv = TOPs;
d3acc0f7 853 POPSTACK;
a0d0e21e 854 if (sv_isobject(sv)) {
33c27489 855 sv_unmagic(varsv, how);
ae21d580 856 /* Croak if a self-tie on an aggregate is attempted. */
b881518d 857 if (varsv == SvRV(sv) &&
d87ebaca
YST		 858 (SvTYPE(varsv) == SVt_PVAV ||
859 SvTYPE(varsv) == SVt_PVHV))
ae21d580
JH		 860 Perl_croak(aTHX_
861 "Self-ties of arrays and hashes are not supported");
a0714e2c 862 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
a0d0e21e
LW		 863 }
864 LEAVE;
3280af22 865 SP = PL_stack_base + markoff;
a0d0e21e
LW		 866 PUSHs(sv);
867 RETURN;
868}
869
870PP(pp_untie)
871{
27da23d5 872 dVAR; dSP;
5b468f54 873 MAGIC *mg;
33c27489 874 SV *sv = POPs;
1df70142 875 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 876 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
55497cff 877
5b468f54
AMS		 878 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
879 RETPUSHYES;
880
65eba18f 881 if ((mg = SvTIED_mg(sv, how))) {
1b6737cc 882 SV * const obj = SvRV(SvTIED_obj(sv, mg));
fa2b88e0 883 if (obj) {
c4420975 884 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
0bd48802 885 CV *cv;
c4420975 886 if (gv && isGV(gv) && (cv = GvCV(gv))) {
fa2b88e0
JS		 887 PUSHMARK(SP);
888 XPUSHs(SvTIED_obj((SV*)gv, mg));
889 XPUSHs(sv_2mortal(newSViv(SvREFCNT(obj)-1)));
890 PUTBACK;
891 ENTER;
892 call_sv((SV *)cv, G_VOID);
893 LEAVE;
894 SPAGAIN;
895 }
041457d9 896 else if (mg && SvREFCNT(obj) > 1 && ckWARN(WARN_UNTIE)) {
9014280d 897 Perl_warner(aTHX_ packWARN(WARN_UNTIE),
fa2b88e0
JS		 898 "untie attempted while %"UVuf" inner references still exist",
899 (UV)SvREFCNT(obj) - 1 ) ;
c4420975 900 }
cbdc8872 901 }
902 }
38193a09 903 sv_unmagic(sv, how) ;
55497cff 904 RETPUSHYES;
a0d0e21e
LW		 905}
906
c07a80fd 907PP(pp_tied)
908{
97aff369 909 dVAR;
39644a26 910 dSP;
1b6737cc 911 const MAGIC *mg;
33c27489 912 SV *sv = POPs;
1df70142 913 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 914 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
5b468f54
AMS		 915
916 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
917 RETPUSHUNDEF;
c07a80fd 918
155aba94 919 if ((mg = SvTIED_mg(sv, how))) {
33c27489
GS		 920 SV *osv = SvTIED_obj(sv, mg);
921 if (osv == mg->mg_obj)
922 osv = sv_mortalcopy(osv);
923 PUSHs(osv);
924 RETURN;
c07a80fd 925 }
c07a80fd 926 RETPUSHUNDEF;
927}
928
a0d0e21e
LW		 929PP(pp_dbmopen)
930{
27da23d5 931 dVAR; dSP;
a0d0e21e
LW		 932 dPOPPOPssrl;
933 HV* stash;
934 GV *gv;
a0d0e21e 935
1b6737cc 936 HV * const hv = (HV*)POPs;
c4420975 937 SV * const sv = sv_mortalcopy(&PL_sv_no);
a0d0e21e 938
a0d0e21e
LW		 939 sv_setpv(sv, "AnyDBM_File");
940 stash = gv_stashsv(sv, FALSE);
8ebc5c01 941 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
a0d0e21e 942 PUTBACK;
864dbfa3 943 require_pv("AnyDBM_File.pm");
a0d0e21e 944 SPAGAIN;
8ebc5c01 945 if (!(gv = gv_fetchmethod(stash, "TIEHASH")))
cea2e8a9 946 DIE(aTHX_ "No dbm on this machine");
a0d0e21e
LW		 947 }
948
57d3b86d 949 ENTER;
924508f0 950 PUSHMARK(SP);
6b05c17a 951
924508f0 952 EXTEND(SP, 5);
a0d0e21e
LW		 953 PUSHs(sv);
954 PUSHs(left);
955 if (SvIV(right))
b448e4fe 956 PUSHs(sv_2mortal(newSVuv(O_RDWR|O_CREAT)));
a0d0e21e 957 else
b448e4fe 958 PUSHs(sv_2mortal(newSVuv(O_RDWR)));
a0d0e21e 959 PUSHs(right);
57d3b86d 960 PUTBACK;
864dbfa3 961 call_sv((SV*)GvCV(gv), G_SCALAR);
a0d0e21e
LW		 962 SPAGAIN;
963
964 if (!sv_isobject(TOPs)) {
924508f0
GS		 965 SP--;
966 PUSHMARK(SP);
a0d0e21e
LW		 967 PUSHs(sv);
968 PUSHs(left);
b448e4fe 969 PUSHs(sv_2mortal(newSVuv(O_RDONLY)));
a0d0e21e 970 PUSHs(right);
a0d0e21e 971 PUTBACK;
864dbfa3 972 call_sv((SV*)GvCV(gv), G_SCALAR);
a0d0e21e
LW		 973 SPAGAIN;
974 }
975
6b05c17a 976 if (sv_isobject(TOPs)) {
14befaf4 977 sv_unmagic((SV *) hv, PERL_MAGIC_tied);
bd61b366 978 sv_magic((SV*)hv, TOPs, PERL_MAGIC_tied, NULL, 0);
6b05c17a 979 }
a0d0e21e
LW		 980 LEAVE;
981 RETURN;
982}
983
a0d0e21e
LW		 984PP(pp_sselect)
985{
a0d0e21e 986#ifdef HAS_SELECT
97aff369 987 dVAR; dSP; dTARGET;
a0d0e21e
LW		 988 register I32 i;
989 register I32 j;
990 register char *s;
991 register SV *sv;
65202027 992 NV value;
a0d0e21e
LW		 993 I32 maxlen = 0;
994 I32 nfound;
995 struct timeval timebuf;
996 struct timeval *tbuf = &timebuf;
997 I32 growsize;
998 char *fd_sets[4];
999#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1000 I32 masksize;
1001 I32 offset;
1002 I32 k;
1003
1004# if BYTEORDER & 0xf0000
1005# define ORDERBYTE (0x88888888 - BYTEORDER)
1006# else
1007# define ORDERBYTE (0x4444 - BYTEORDER)
1008# endif
1009
1010#endif
1011
1012 SP -= 4;
1013 for (i = 1; i <= 3; i++) {
c4420975 1014 SV * const sv = SP[i];
15547071
GA		 1015 if (!SvOK(sv))
1016 continue;
1017 if (SvREADONLY(sv)) {
729c079f
NC		 1018 if (SvIsCOW(sv))
1019 sv_force_normal_flags(sv, 0);
15547071 1020 if (SvREADONLY(sv) && !(SvPOK(sv) && SvCUR(sv) == 0))
729c079f
NC		 1021 DIE(aTHX_ PL_no_modify);
1022 }
4ef2275c
GA		 1023 if (!SvPOK(sv)) {
1024 if (ckWARN(WARN_MISC))
1025 Perl_warner(aTHX_ packWARN(WARN_MISC), "Non-string passed as bitmask");
1026 SvPV_force_nolen(sv); /* force string conversion */
1027 }
729c079f 1028 j = SvCUR(sv);
a0d0e21e
LW		 1029 if (maxlen < j)
1030 maxlen = j;
1031 }
1032
5ff3f7a4 1033/* little endians can use vecs directly */
e366b469 1034#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
5ff3f7a4 1035# ifdef NFDBITS
a0d0e21e 1036
5ff3f7a4
GS		 1037# ifndef NBBY
1038# define NBBY 8
1039# endif
a0d0e21e
LW		 1040
1041 masksize = NFDBITS / NBBY;
5ff3f7a4 1042# else
a0d0e21e 1043 masksize = sizeof(long); /* documented int, everyone seems to use long */
5ff3f7a4 1044# endif
a0d0e21e
LW		 1045 Zero(&fd_sets[0], 4, char*);
1046#endif
1047
ad517f75
MHM		 1048# if SELECT_MIN_BITS == 1
1049 growsize = sizeof(fd_set);
1050# else
1051# if defined(__GLIBC__) && defined(__FD_SETSIZE)
1052# undef SELECT_MIN_BITS
1053# define SELECT_MIN_BITS __FD_SETSIZE
1054# endif
e366b469
PG		 1055 /* If SELECT_MIN_BITS is greater than one we most probably will want
1056 * to align the sizes with SELECT_MIN_BITS/8 because for example
1057 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
1058 * UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
1059 * on (sets/tests/clears bits) is 32 bits. */
1060 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
e366b469
PG		 1061# endif
1062
a0d0e21e
LW		 1063 sv = SP[4];
1064 if (SvOK(sv)) {
1065 value = SvNV(sv);
1066 if (value < 0.0)
1067 value = 0.0;
1068 timebuf.tv_sec = (long)value;
65202027 1069 value -= (NV)timebuf.tv_sec;
a0d0e21e
LW		 1070 timebuf.tv_usec = (long)(value * 1000000.0);
1071 }
1072 else
1073 tbuf = Null(struct timeval*);
1074
1075 for (i = 1; i <= 3; i++) {
1076 sv = SP[i];
15547071 1077 if (!SvOK(sv) || SvCUR(sv) == 0) {
a0d0e21e
LW		 1078 fd_sets[i] = 0;
1079 continue;
1080 }
4ef2275c 1081 assert(SvPOK(sv));
a0d0e21e
LW		 1082 j = SvLEN(sv);
1083 if (j < growsize) {
1084 Sv_Grow(sv, growsize);
a0d0e21e 1085 }
c07a80fd 1086 j = SvCUR(sv);
1087 s = SvPVX(sv) + j;
1088 while (++j <= growsize) {
1089 *s++ = '\0';
1090 }
1091
a0d0e21e
LW		 1092#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1093 s = SvPVX(sv);
a02a5408 1094 Newx(fd_sets[i], growsize, char);
a0d0e21e
LW		 1095 for (offset = 0; offset < growsize; offset += masksize) {
1096 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1097 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1098 }
1099#else
1100 fd_sets[i] = SvPVX(sv);
1101#endif
1102 }
1103
dc4c69d9
JH		 1104#ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1105 /* Can't make just the (void*) conditional because that would be
1106 * cpp #if within cpp macro, and not all compilers like that. */
1107 nfound = PerlSock_select(
1108 maxlen * 8,
1109 (Select_fd_set_t) fd_sets[1],
1110 (Select_fd_set_t) fd_sets[2],
1111 (Select_fd_set_t) fd_sets[3],
1112 (void*) tbuf); /* Workaround for compiler bug. */
1113#else
6ad3d225 1114 nfound = PerlSock_select(
a0d0e21e
LW		 1115 maxlen * 8,
1116 (Select_fd_set_t) fd_sets[1],
1117 (Select_fd_set_t) fd_sets[2],
1118 (Select_fd_set_t) fd_sets[3],
1119 tbuf);
dc4c69d9 1120#endif
a0d0e21e
LW		 1121 for (i = 1; i <= 3; i++) {
1122 if (fd_sets[i]) {
1123 sv = SP[i];
1124#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1125 s = SvPVX(sv);
1126 for (offset = 0; offset < growsize; offset += masksize) {
1127 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1128 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1129 }
1130 Safefree(fd_sets[i]);
1131#endif
1132 SvSETMAGIC(sv);
1133 }
1134 }
1135
4189264e 1136 PUSHi(nfound);
a0d0e21e 1137 if (GIMME == G_ARRAY && tbuf) {
65202027
DS		 1138 value = (NV)(timebuf.tv_sec) +
1139 (NV)(timebuf.tv_usec) / 1000000.0;
3280af22 1140 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
a0d0e21e
LW		 1141 sv_setnv(sv, value);
1142 }
1143 RETURN;
1144#else
cea2e8a9 1145 DIE(aTHX_ "select not implemented");
a0d0e21e
LW		 1146#endif
1147}
1148
4633a7c4 1149void
864dbfa3 1150Perl_setdefout(pTHX_ GV *gv)
4633a7c4 1151{
97aff369 1152 dVAR;
4633a7c4
LW		 1153 if (gv)
1154 (void)SvREFCNT_inc(gv);
3280af22
NIS		 1155 if (PL_defoutgv)
1156 SvREFCNT_dec(PL_defoutgv);
1157 PL_defoutgv = gv;
4633a7c4
LW		 1158}
1159
a0d0e21e
LW		 1160PP(pp_select)
1161{
97aff369 1162 dVAR; dSP; dTARGET;
4633a7c4 1163 HV *hv;
1df70142 1164 GV * const newdefout = (PL_op->op_private > 0) ? ((GV *) POPs) : (GV *) NULL;
7452cf6a 1165 GV * egv = GvEGV(PL_defoutgv);
4633a7c4 1166
4633a7c4 1167 if (!egv)
3280af22 1168 egv = PL_defoutgv;
4633a7c4
LW		 1169 hv = GvSTASH(egv);
1170 if (! hv)
3280af22 1171 XPUSHs(&PL_sv_undef);
4633a7c4 1172 else {
c4420975 1173 GV * const * const gvp = (GV**)hv_fetch(hv, GvNAME(egv), GvNAMELEN(egv), FALSE);
f86702cc 1174 if (gvp && *gvp == egv) {
bd61b366 1175 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
f86702cc 1176 XPUSHTARG;
1177 }
1178 else {
1179 XPUSHs(sv_2mortal(newRV((SV*)egv)));
1180 }
4633a7c4
LW		 1181 }
1182
1183 if (newdefout) {
ded8aa31
GS		 1184 if (!GvIO(newdefout))
1185 gv_IOadd(newdefout);
4633a7c4
LW		 1186 setdefout(newdefout);
1187 }
1188
a0d0e21e
LW		 1189 RETURN;
1190}
1191
1192PP(pp_getc)
1193{
27da23d5 1194 dVAR; dSP; dTARGET;
90133b69 1195 IO *io = NULL;
2ae324a7 1196 MAGIC *mg;
1b6737cc 1197 GV * const gv = (MAXARG==0) ? PL_stdingv : (GV*)POPs;
2ae324a7 1198
5b468f54
AMS		 1199 if (gv && (io = GvIO(gv))
1200 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1201 {
f54cb97a 1202 const I32 gimme = GIMME_V;
2ae324a7 1203 PUSHMARK(SP);
5b468f54 1204 XPUSHs(SvTIED_obj((SV*)io, mg));
2ae324a7 1205 PUTBACK;
1206 ENTER;
864dbfa3 1207 call_method("GETC", gimme);
2ae324a7 1208 LEAVE;
1209 SPAGAIN;
54310121 1210 if (gimme == G_SCALAR)
1211 SvSetMagicSV_nosteal(TARG, TOPs);
2ae324a7 1212 RETURN;
1213 }
90133b69 1214 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
041457d9
DM		 1215 if ((!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
1216 && ckWARN2(WARN_UNOPENED,WARN_CLOSED))
90133b69 1217 report_evil_fh(gv, io, PL_op->op_type);
b5fe5ca2 1218 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1219 RETPUSHUNDEF;
90133b69 1220 }
bbce6d69 1221 TAINT;
c69006e4 1222 sv_setpvn(TARG, " ", 1);
9bc64814 1223 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
7d59b7e4
NIS		 1224 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1225 /* Find out how many bytes the char needs */
aa07b2f6 1226 Size_t len = UTF8SKIP(SvPVX_const(TARG));
7d59b7e4
NIS		 1227 if (len > 1) {
1228 SvGROW(TARG,len+1);
1229 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1230 SvCUR_set(TARG,1+len);
1231 }
1232 SvUTF8_on(TARG);
1233 }
a0d0e21e
LW		 1234 PUSHTARG;
1235 RETURN;
1236}
1237
76e3520e 1238STATIC OP *
cea2e8a9 1239S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
a0d0e21e 1240{
27da23d5 1241 dVAR;
c09156bb 1242 register PERL_CONTEXT *cx;
f54cb97a 1243 const I32 gimme = GIMME_V;
a0d0e21e
LW		 1244
1245 ENTER;
1246 SAVETMPS;
1247
146174a9 1248 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
a0d0e21e 1249 PUSHFORMAT(cx);
f39bc417 1250 cx->blk_sub.retop = retop;
fd617465
DM		 1251 SAVECOMPPAD();
1252 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), 1);
a0d0e21e 1253
4633a7c4 1254 setdefout(gv); /* locally select filehandle so $% et al work */
a0d0e21e
LW		 1255 return CvSTART(cv);
1256}
1257
1258PP(pp_enterwrite)
1259{
97aff369 1260 dVAR;
39644a26 1261 dSP;
a0d0e21e
LW		 1262 register GV *gv;
1263 register IO *io;
1264 GV *fgv;
1265 CV *cv;
1266
1267 if (MAXARG == 0)
3280af22 1268 gv = PL_defoutgv;
a0d0e21e
LW		 1269 else {
1270 gv = (GV*)POPs;
1271 if (!gv)
3280af22 1272 gv = PL_defoutgv;
a0d0e21e
LW		 1273 }
1274 EXTEND(SP, 1);
1275 io = GvIO(gv);
1276 if (!io) {
1277 RETPUSHNO;
1278 }
1279 if (IoFMT_GV(io))
1280 fgv = IoFMT_GV(io);
1281 else
1282 fgv = gv;
1283
1284 cv = GvFORM(fgv);
a0d0e21e
LW		 1285 if (!cv) {
1286 if (fgv) {
1df70142 1287 SV * const tmpsv = sv_newmortal();
e62f0680 1288 const char *name;
bd61b366 1289 gv_efullname4(tmpsv, fgv, NULL, FALSE);
e62f0680 1290 name = SvPV_nolen_const(tmpsv);
1df70142
AL		 1291 if (name && *name)
1292 DIE(aTHX_ "Undefined format \"%s\" called", name);
a0d0e21e 1293 }
cea2e8a9 1294 DIE(aTHX_ "Not a format reference");
a0d0e21e 1295 }
44a8e56a 1296 if (CvCLONE(cv))
1297 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
a0d0e21e 1298
44a8e56a 1299 IoFLAGS(io) &= ~IOf_DIDTOP;
533c011a 1300 return doform(cv,gv,PL_op->op_next);
a0d0e21e
LW		 1301}
1302
1303PP(pp_leavewrite)
1304{
27da23d5 1305 dVAR; dSP;
1b6737cc
AL		 1306 GV * const gv = cxstack[cxstack_ix].blk_sub.gv;
1307 register IO * const io = GvIOp(gv);
1308 PerlIO * const ofp = IoOFP(io);
760ac839 1309 PerlIO *fp;
8772537c
AL		 1310 SV **newsp;
1311 I32 gimme;
c09156bb 1312 register PERL_CONTEXT *cx;
a0d0e21e 1313
760ac839 1314 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1315 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
7ef822cd
JH		 1316 if (!io || !ofp)
1317 goto forget_top;
3280af22
NIS		 1318 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1319 PL_formtarget != PL_toptarget)
a0d0e21e 1320 {
4633a7c4
LW		 1321 GV *fgv;
1322 CV *cv;
a0d0e21e
LW		 1323 if (!IoTOP_GV(io)) {
1324 GV *topgv;
a0d0e21e
LW		 1325
1326 if (!IoTOP_NAME(io)) {
1b6737cc 1327 SV *topname;
a0d0e21e
LW		 1328 if (!IoFMT_NAME(io))
1329 IoFMT_NAME(io) = savepv(GvNAME(gv));
0bd0581c 1330 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%s_TOP", GvNAME(gv)));
f776e3cd 1331 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
748a9306 1332 if ((topgv && GvFORM(topgv)) ||
fafc274c 1333 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
2e0de35c 1334 IoTOP_NAME(io) = savesvpv(topname);
a0d0e21e 1335 else
89529cee 1336 IoTOP_NAME(io) = savepvs("top");
a0d0e21e 1337 }
f776e3cd 1338 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
a0d0e21e 1339 if (!topgv || !GvFORM(topgv)) {
b929a54b 1340 IoLINES_LEFT(io) = IoPAGE_LEN(io);
a0d0e21e
LW		 1341 goto forget_top;
1342 }
1343 IoTOP_GV(io) = topgv;
1344 }
748a9306
LW		 1345 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1346 I32 lines = IoLINES_LEFT(io);
504618e9 1347 const char *s = SvPVX_const(PL_formtarget);
8e07c86e
AD		 1348 if (lines <= 0) /* Yow, header didn't even fit!!! */
1349 goto forget_top;
748a9306
LW		 1350 while (lines-- > 0) {
1351 s = strchr(s, '\n');
1352 if (!s)
1353 break;
1354 s++;
1355 }
1356 if (s) {
f54cb97a 1357 const STRLEN save = SvCUR(PL_formtarget);
aa07b2f6 1358 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
d75029d0
NIS		 1359 do_print(PL_formtarget, ofp);
1360 SvCUR_set(PL_formtarget, save);
3280af22
NIS		 1361 sv_chop(PL_formtarget, s);
1362 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW		 1363 }
1364 }
a0d0e21e 1365 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
d75029d0 1366 do_print(PL_formfeed, ofp);
a0d0e21e
LW		 1367 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1368 IoPAGE(io)++;
3280af22 1369 PL_formtarget = PL_toptarget;
748a9306 1370 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4
LW		 1371 fgv = IoTOP_GV(io);
1372 if (!fgv)
cea2e8a9 1373 DIE(aTHX_ "bad top format reference");
4633a7c4 1374 cv = GvFORM(fgv);
1df70142
AL		 1375 if (!cv) {
1376 SV * const sv = sv_newmortal();
b464bac0 1377 const char *name;
bd61b366 1378 gv_efullname4(sv, fgv, NULL, FALSE);
e62f0680 1379 name = SvPV_nolen_const(sv);
2dd78f96 1380 if (name && *name)
1df70142 1381 DIE(aTHX_ "Undefined top format \"%s\" called",name);
4633a7c4 1382 }
1df70142
AL		 1383 /* why no:
1384 else
1385 DIE(aTHX_ "Undefined top format called");
1386 ?*/
44a8e56a 1387 if (CvCLONE(cv))
1388 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
533c011a 1389 return doform(cv,gv,PL_op);
a0d0e21e
LW		 1390 }
1391
1392 forget_top:
3280af22 1393 POPBLOCK(cx,PL_curpm);
a0d0e21e
LW		 1394 POPFORMAT(cx);
1395 LEAVE;
1396
1397 fp = IoOFP(io);
1398 if (!fp) {
599cee73 1399 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
6e6ef6b2
NC		 1400 if (IoIFP(io))
1401 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
599cee73 1402 else if (ckWARN(WARN_CLOSED))
bc37a18f 1403 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1404 }
3280af22 1405 PUSHs(&PL_sv_no);
a0d0e21e
LW		 1406 }
1407 else {
3280af22 1408 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
599cee73 1409 if (ckWARN(WARN_IO))
9014280d 1410 Perl_warner(aTHX_ packWARN(WARN_IO), "page overflow");
a0d0e21e 1411 }
d75029d0 1412 if (!do_print(PL_formtarget, fp))
3280af22 1413 PUSHs(&PL_sv_no);
a0d0e21e 1414 else {
3280af22
NIS		 1415 FmLINES(PL_formtarget) = 0;
1416 SvCUR_set(PL_formtarget, 0);
1417 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1418 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1419 (void)PerlIO_flush(fp);
3280af22 1420 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1421 }
1422 }
9cbac4c7 1423 /* bad_ofp: */
3280af22 1424 PL_formtarget = PL_bodytarget;
a0d0e21e 1425 PUTBACK;
29033a8a
SH		 1426 PERL_UNUSED_VAR(newsp);
1427 PERL_UNUSED_VAR(gimme);
f39bc417 1428 return cx->blk_sub.retop;
a0d0e21e
LW		 1429}
1430
1431PP(pp_prtf)
1432{
27da23d5 1433 dVAR; dSP; dMARK; dORIGMARK;
a0d0e21e 1434 IO *io;
760ac839 1435 PerlIO *fp;
26db47c4 1436 SV *sv;
46fc3d4c 1437 MAGIC *mg;
a0d0e21e 1438
c4420975 1439 GV * const gv = (PL_op->op_flags & OPf_STACKED) ? (GV*)*++MARK : PL_defoutgv;
46fc3d4c 1440
5b468f54
AMS		 1441 if (gv && (io = GvIO(gv))
1442 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1443 {
46fc3d4c 1444 if (MARK == ORIGMARK) {
4352c267 1445 MEXTEND(SP, 1);
46fc3d4c 1446 ++MARK;
1447 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1448 ++SP;
1449 }
1450 PUSHMARK(MARK - 1);
5b468f54 1451 *MARK = SvTIED_obj((SV*)io, mg);
46fc3d4c 1452 PUTBACK;
1453 ENTER;
864dbfa3 1454 call_method("PRINTF", G_SCALAR);
46fc3d4c 1455 LEAVE;
1456 SPAGAIN;
1457 MARK = ORIGMARK + 1;
1458 *MARK = *SP;
1459 SP = MARK;
1460 RETURN;
1461 }
1462
561b68a9 1463 sv = newSV(0);
a0d0e21e 1464 if (!(io = GvIO(gv))) {
2dd78f96
JH		 1465 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1466 report_evil_fh(gv, io, PL_op->op_type);
93189314 1467 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW		 1468 goto just_say_no;
1469 }
1470 else if (!(fp = IoOFP(io))) {
599cee73 1471 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
6e6ef6b2
NC		 1472 if (IoIFP(io))
1473 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
599cee73 1474 else if (ckWARN(WARN_CLOSED))
bc37a18f 1475 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1476 }
93189314 1477 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
a0d0e21e
LW		 1478 goto just_say_no;
1479 }
1480 else {
1481 do_sprintf(sv, SP - MARK, MARK + 1);
1482 if (!do_print(sv, fp))
1483 goto just_say_no;
1484
1485 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1486 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW		 1487 goto just_say_no;
1488 }
1489 SvREFCNT_dec(sv);
1490 SP = ORIGMARK;
3280af22 1491 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1492 RETURN;
1493
1494 just_say_no:
1495 SvREFCNT_dec(sv);
1496 SP = ORIGMARK;
3280af22 1497 PUSHs(&PL_sv_undef);
a0d0e21e
LW		 1498 RETURN;
1499}
1500
c07a80fd 1501PP(pp_sysopen)
1502{
97aff369 1503 dVAR;
39644a26 1504 dSP;
1df70142
AL		 1505 const int perm = (MAXARG > 3) ? POPi : 0666;
1506 const int mode = POPi;
1b6737cc
AL		 1507 SV * const sv = POPs;
1508 GV * const gv = (GV *)POPs;
1509 STRLEN len;
c07a80fd 1510
4592e6ca 1511 /* Need TIEHANDLE method ? */
1b6737cc 1512 const char * const tmps = SvPV_const(sv, len);
e62f0680 1513 /* FIXME? do_open should do const */
2fbb330f 1514 if (do_open(gv, tmps, len, TRUE, mode, perm, Nullfp)) {
c07a80fd 1515 IoLINES(GvIOp(gv)) = 0;
3280af22 1516 PUSHs(&PL_sv_yes);
c07a80fd 1517 }
1518 else {
3280af22 1519 PUSHs(&PL_sv_undef);
c07a80fd 1520 }
1521 RETURN;
1522}
1523
a0d0e21e
LW		 1524PP(pp_sysread)
1525{
27da23d5 1526 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e 1527 int offset;
a0d0e21e
LW		 1528 IO *io;
1529 char *buffer;
5b54f415 1530 SSize_t length;
eb5c063a 1531 SSize_t count;
1e422769 1532 Sock_size_t bufsize;
748a9306 1533 SV *bufsv;
a0d0e21e 1534 STRLEN blen;
eb5c063a 1535 int fp_utf8;
1dd30107
NC		 1536 int buffer_utf8;
1537 SV *read_target;
eb5c063a
NIS		 1538 Size_t got = 0;
1539 Size_t wanted;
1d636c13 1540 bool charstart = FALSE;
87330c3c
JH		 1541 STRLEN charskip = 0;
1542 STRLEN skip = 0;
a0d0e21e 1543
1b6737cc 1544 GV * const gv = (GV*)*++MARK;
5b468f54 1545 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1b6737cc 1546 && gv && (io = GvIO(gv)) )
137443ea 1547 {
1b6737cc
AL		 1548 const MAGIC * mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
1549 if (mg) {
1550 SV *sv;
1551 PUSHMARK(MARK-1);
1552 *MARK = SvTIED_obj((SV*)io, mg);
1553 ENTER;
1554 call_method("READ", G_SCALAR);
1555 LEAVE;
1556 SPAGAIN;
1557 sv = POPs;
1558 SP = ORIGMARK;
1559 PUSHs(sv);
1560 RETURN;
1561 }
2ae324a7 1562 }
1563
a0d0e21e
LW		 1564 if (!gv)
1565 goto say_undef;
748a9306 1566 bufsv = *++MARK;
ff68c719 1567 if (! SvOK(bufsv))
1568 sv_setpvn(bufsv, "", 0);
a0d0e21e 1569 length = SvIVx(*++MARK);
748a9306 1570 SETERRNO(0,0);
a0d0e21e
LW		 1571 if (MARK < SP)
1572 offset = SvIVx(*++MARK);
1573 else
1574 offset = 0;
1575 io = GvIO(gv);
b5fe5ca2
SR		 1576 if (!io || !IoIFP(io)) {
1577 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1578 report_evil_fh(gv, io, PL_op->op_type);
1579 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1580 goto say_undef;
b5fe5ca2 1581 }
0064a8a9 1582 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
7d59b7e4 1583 buffer = SvPVutf8_force(bufsv, blen);
1e54db1a 1584 /* UTF-8 may not have been set if they are all low bytes */
eb5c063a 1585 SvUTF8_on(bufsv);
9b9d7ce8 1586 buffer_utf8 = 0;
7d59b7e4
NIS		 1587 }
1588 else {
1589 buffer = SvPV_force(bufsv, blen);
1dd30107 1590 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
7d59b7e4
NIS		 1591 }
1592 if (length < 0)
1593 DIE(aTHX_ "Negative length");
eb5c063a 1594 wanted = length;
7d59b7e4 1595
d0965105
JH		 1596 charstart = TRUE;
1597 charskip = 0;
87330c3c 1598 skip = 0;
d0965105 1599
a0d0e21e 1600#ifdef HAS_SOCKET
533c011a 1601 if (PL_op->op_type == OP_RECV) {
46fc3d4c 1602 char namebuf[MAXPATHLEN];
17a8c7ba 1603#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
490ab354
JH		 1604 bufsize = sizeof (struct sockaddr_in);
1605#else
46fc3d4c 1606 bufsize = sizeof namebuf;
490ab354 1607#endif
abf95952
IZ		 1608#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1609 if (bufsize >= 256)
1610 bufsize = 255;
1611#endif
eb160463 1612 buffer = SvGROW(bufsv, (STRLEN)(length+1));
bbce6d69 1613 /* 'offset' means 'flags' here */
eb5c063a 1614 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
46fc3d4c 1615 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1616 if (count < 0)
a0d0e21e 1617 RETPUSHUNDEF;
4107cc59
OF		 1618#ifdef EPOC
1619 /* Bogus return without padding */
1620 bufsize = sizeof (struct sockaddr_in);
1621#endif
eb5c063a 1622 SvCUR_set(bufsv, count);
748a9306
LW		 1623 *SvEND(bufsv) = '\0';
1624 (void)SvPOK_only(bufsv);
eb5c063a
NIS		 1625 if (fp_utf8)
1626 SvUTF8_on(bufsv);
748a9306 1627 SvSETMAGIC(bufsv);
aac0dd9a 1628 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1629 if (!(IoFLAGS(io) & IOf_UNTAINT))
1630 SvTAINTED_on(bufsv);
a0d0e21e 1631 SP = ORIGMARK;
46fc3d4c 1632 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW		 1633 PUSHs(TARG);
1634 RETURN;
1635 }
1636#else
911d147d 1637 if (PL_op->op_type == OP_RECV)
cea2e8a9 1638 DIE(aTHX_ PL_no_sock_func, "recv");
a0d0e21e 1639#endif
eb5c063a
NIS		 1640 if (DO_UTF8(bufsv)) {
1641 /* offset adjust in characters not bytes */
1642 blen = sv_len_utf8(bufsv);
7d59b7e4 1643 }
bbce6d69 1644 if (offset < 0) {
eb160463 1645 if (-offset > (int)blen)
cea2e8a9 1646 DIE(aTHX_ "Offset outside string");
bbce6d69 1647 offset += blen;
1648 }
eb5c063a
NIS		 1649 if (DO_UTF8(bufsv)) {
1650 /* convert offset-as-chars to offset-as-bytes */
6960c29a
CH		 1651 if (offset >= (int)blen)
1652 offset += SvCUR(bufsv) - blen;
1653 else
1654 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
eb5c063a
NIS		 1655 }
1656 more_bytes:
cd52b7b2 1657 bufsize = SvCUR(bufsv);
1dd30107
NC		 1658 /* Allocating length + offset + 1 isn't perfect in the case of reading
1659 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1660 unduly.
1661 (should be 2 * length + offset + 1, or possibly something longer if
1662 PL_encoding is true) */
eb160463 1663 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
27da23d5 1664 if (offset > 0 && (Sock_size_t)offset > bufsize) { /* Zero any newly allocated space */
cd52b7b2 1665 Zero(buffer+bufsize, offset-bufsize, char);
1666 }
eb5c063a 1667 buffer = buffer + offset;
1dd30107
NC		 1668 if (!buffer_utf8) {
1669 read_target = bufsv;
1670 } else {
1671 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1672 concatenate it to the current buffer. */
1673
1674 /* Truncate the existing buffer to the start of where we will be
1675 reading to: */
1676 SvCUR_set(bufsv, offset);
1677
1678 read_target = sv_newmortal();
862a34c6 1679 SvUPGRADE(read_target, SVt_PV);
fe2774ed 1680 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1dd30107 1681 }
eb5c063a 1682
533c011a 1683 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1684#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1685 if (IoTYPE(io) == IoTYPE_SOCKET) {
eb5c063a
NIS		 1686 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1687 buffer, length, 0);
a7092146
GS		 1688 }
1689 else
1690#endif
1691 {
eb5c063a
NIS		 1692 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1693 buffer, length);
a7092146 1694 }
a0d0e21e
LW		 1695 }
1696 else
1697#ifdef HAS_SOCKET__bad_code_maybe
50952442 1698 if (IoTYPE(io) == IoTYPE_SOCKET) {
46fc3d4c 1699 char namebuf[MAXPATHLEN];
490ab354
JH		 1700#if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1701 bufsize = sizeof (struct sockaddr_in);
1702#else
46fc3d4c 1703 bufsize = sizeof namebuf;
490ab354 1704#endif
eb5c063a 1705 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
46fc3d4c 1706 (struct sockaddr *)namebuf, &bufsize);
a0d0e21e
LW		 1707 }
1708 else
1709#endif
3b02c43c 1710 {
eb5c063a
NIS		 1711 count = PerlIO_read(IoIFP(io), buffer, length);
1712 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1713 if (count == 0 && PerlIO_error(IoIFP(io)))
1714 count = -1;
3b02c43c 1715 }
eb5c063a 1716 if (count < 0) {
a00b5bd3 1717 if ((IoTYPE(io) == IoTYPE_WRONLY) && ckWARN(WARN_IO))
6e6ef6b2 1718 report_evil_fh(gv, io, OP_phoney_OUTPUT_ONLY);
a0d0e21e 1719 goto say_undef;
af8c498a 1720 }
aa07b2f6 1721 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1dd30107
NC		 1722 *SvEND(read_target) = '\0';
1723 (void)SvPOK_only(read_target);
0064a8a9 1724 if (fp_utf8 && !IN_BYTES) {
eb5c063a 1725 /* Look at utf8 we got back and count the characters */
1df70142 1726 const char *bend = buffer + count;
eb5c063a 1727 while (buffer < bend) {
d0965105
JH		 1728 if (charstart) {
1729 skip = UTF8SKIP(buffer);
1730 charskip = 0;
1731 }
1732 if (buffer - charskip + skip > bend) {
eb5c063a
NIS		 1733 /* partial character - try for rest of it */
1734 length = skip - (bend-buffer);
aa07b2f6 1735 offset = bend - SvPVX_const(bufsv);
d0965105
JH		 1736 charstart = FALSE;
1737 charskip += count;
eb5c063a
NIS		 1738 goto more_bytes;
1739 }
1740 else {
1741 got++;
1742 buffer += skip;
d0965105
JH		 1743 charstart = TRUE;
1744 charskip = 0;
eb5c063a
NIS		 1745 }
1746 }
1747 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1748 provided amount read (count) was what was requested (length)
1749 */
1750 if (got < wanted && count == length) {
d0965105 1751 length = wanted - got;
aa07b2f6 1752 offset = bend - SvPVX_const(bufsv);
eb5c063a
NIS		 1753 goto more_bytes;
1754 }
1755 /* return value is character count */
1756 count = got;
1757 SvUTF8_on(bufsv);
1758 }
1dd30107
NC		 1759 else if (buffer_utf8) {
1760 /* Let svcatsv upgrade the bytes we read in to utf8.
1761 The buffer is a mortal so will be freed soon. */
1762 sv_catsv_nomg(bufsv, read_target);
1763 }
748a9306 1764 SvSETMAGIC(bufsv);
aac0dd9a 1765 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1766 if (!(IoFLAGS(io) & IOf_UNTAINT))
1767 SvTAINTED_on(bufsv);
a0d0e21e 1768 SP = ORIGMARK;
eb5c063a 1769 PUSHi(count);
a0d0e21e
LW		 1770 RETURN;
1771
1772 say_undef:
1773 SP = ORIGMARK;
1774 RETPUSHUNDEF;
1775}
1776
a0d0e21e
LW		 1777PP(pp_send)
1778{
27da23d5 1779 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e 1780 IO *io;
748a9306 1781 SV *bufsv;
83003860 1782 const char *buffer;
64a1bc8e 1783 Size_t length = 0;
8c99d73e 1784 SSize_t retval;
a0d0e21e 1785 STRLEN blen;
1d603a67 1786 MAGIC *mg;
64a1bc8e
NC		 1787 const int op_type = PL_op->op_type;
1788
7452cf6a 1789 GV *const gv = (GV*)*++MARK;
14befaf4 1790 if (PL_op->op_type == OP_SYSWRITE
5b468f54
AMS		 1791 && gv && (io = GvIO(gv))
1792 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
14befaf4 1793 {
1d603a67 1794 SV *sv;
64a1bc8e
NC		 1795
1796 if (MARK == SP - 1) {
1797 EXTEND(SP, 1000);
1798 sv = sv_2mortal(newSViv(sv_len(*SP)));
1799 PUSHs(sv);
1800 PUTBACK;
1801 }
1d603a67 1802
64a1bc8e
NC		 1803 PUSHMARK(ORIGMARK);
1804 *(ORIGMARK+1) = SvTIED_obj((SV*)io, mg);
1d603a67 1805 ENTER;
864dbfa3 1806 call_method("WRITE", G_SCALAR);
1d603a67
GB		 1807 LEAVE;
1808 SPAGAIN;
1809 sv = POPs;
1810 SP = ORIGMARK;
1811 PUSHs(sv);
1812 RETURN;
1813 }
a0d0e21e
LW		 1814 if (!gv)
1815 goto say_undef;
64a1bc8e 1816
748a9306 1817 bufsv = *++MARK;
64a1bc8e
NC		 1818
1819 if (op_type == OP_SYSWRITE) {
1820 if (MARK >= SP) {
1821 length = (Size_t) sv_len(bufsv);
1822 } else {
8c99d73e 1823#if Size_t_size > IVSIZE
64a1bc8e 1824 length = (Size_t)SvNVx(*++MARK);
146174a9 1825#else
64a1bc8e 1826 length = (Size_t)SvIVx(*++MARK);
146174a9 1827#endif
64a1bc8e
NC		 1828 if ((SSize_t)length < 0)
1829 DIE(aTHX_ "Negative length");
1830 }
1831 }
748a9306 1832 SETERRNO(0,0);
a0d0e21e
LW		 1833 io = GvIO(gv);
1834 if (!io || !IoIFP(io)) {
8c99d73e 1835 retval = -1;
bc37a18f
RG		 1836 if (ckWARN(WARN_CLOSED))
1837 report_evil_fh(gv, io, PL_op->op_type);
b5fe5ca2 1838 SETERRNO(EBADF,RMS_IFI);
7d59b7e4
NIS		 1839 goto say_undef;
1840 }
1841
1842 if (PerlIO_isutf8(IoIFP(io))) {
6aa2f6a7
NC		 1843 if (!SvUTF8(bufsv)) {
1844 bufsv = sv_2mortal(newSVsv(bufsv));
1845 buffer = sv_2pvutf8(bufsv, &blen);
1846 } else
83003860 1847 buffer = SvPV_const(bufsv, blen);
a0d0e21e 1848 }
7d59b7e4 1849 else {
4de5f5ca
JH		 1850 if (DO_UTF8(bufsv)) {
1851 /* Not modifying source SV, so making a temporary copy. */
1852 bufsv = sv_2mortal(newSVsv(bufsv));
1853 sv_utf8_downgrade(bufsv, FALSE);
1854 }
83003860 1855 buffer = SvPV_const(bufsv, blen);
7d59b7e4
NIS		 1856 }
1857
64a1bc8e 1858 if (op_type == OP_SYSWRITE) {
7d59b7e4
NIS		 1859 IV offset;
1860 if (DO_UTF8(bufsv)) {
1861 /* length and offset are in chars */
1862 blen = sv_len_utf8(bufsv);
1863 }
bbce6d69 1864 if (MARK < SP) {
a0d0e21e 1865 offset = SvIVx(*++MARK);
bbce6d69 1866 if (offset < 0) {
eb160463 1867 if (-offset > (IV)blen)
cea2e8a9 1868 DIE(aTHX_ "Offset outside string");
bbce6d69 1869 offset += blen;
eb160463 1870 } else if (offset >= (IV)blen && blen > 0)
cea2e8a9 1871 DIE(aTHX_ "Offset outside string");
bbce6d69 1872 } else
a0d0e21e
LW		 1873 offset = 0;
1874 if (length > blen - offset)
1875 length = blen - offset;
7d59b7e4 1876 if (DO_UTF8(bufsv)) {
83003860 1877 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
7d59b7e4
NIS		 1878 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1879 }
1880 else {
1881 buffer = buffer+offset;
1882 }
a7092146 1883#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 1884 if (IoTYPE(io) == IoTYPE_SOCKET) {
8c99d73e 1885 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1886 buffer, length, 0);
a7092146
GS		 1887 }
1888 else
1889#endif
1890 {
94e4c244 1891 /* See the note at doio.c:do_print about filesize limits. --jhi */
8c99d73e 1892 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1893 buffer, length);
a7092146 1894 }
a0d0e21e
LW		 1895 }
1896#ifdef HAS_SOCKET
64a1bc8e
NC		 1897 else {
1898 const int flags = SvIVx(*++MARK);
1899 if (SP > MARK) {
1900 STRLEN mlen;
1901 char * const sockbuf = SvPVx(*++MARK, mlen);
1902 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1903 flags, (struct sockaddr *)sockbuf, mlen);
1904 }
1905 else {
1906 retval
1907 = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, flags);
1908 }
a0d0e21e 1909 }
a0d0e21e
LW		 1910#else
1911 else
cea2e8a9 1912 DIE(aTHX_ PL_no_sock_func, "send");
a0d0e21e 1913#endif
8c99d73e 1914 if (retval < 0)
a0d0e21e
LW		 1915 goto say_undef;
1916 SP = ORIGMARK;
f36eea10
JH		 1917 if (DO_UTF8(bufsv))
1918 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
8c99d73e
GS		 1919#if Size_t_size > IVSIZE
1920 PUSHn(retval);
1921#else
1922 PUSHi(retval);
1923#endif
a0d0e21e
LW		 1924 RETURN;
1925
1926 say_undef:
1927 SP = ORIGMARK;
1928 RETPUSHUNDEF;
1929}
1930
a0d0e21e
LW		 1931PP(pp_eof)
1932{
27da23d5 1933 dVAR; dSP;
a0d0e21e
LW		 1934 GV *gv;
1935
32da55ab 1936 if (MAXARG == 0) {
146174a9
CB		 1937 if (PL_op->op_flags & OPf_SPECIAL) { /* eof() */
1938 IO *io;
ed2c6b9b 1939 gv = PL_last_in_gv = GvEGV(PL_argvgv);
146174a9
CB		 1940 io = GvIO(gv);
1941 if (io && !IoIFP(io)) {
1942 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
1943 IoLINES(io) = 0;
1944 IoFLAGS(io) &= ~IOf_START;
2fbb330f 1945 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, Nullfp);
146174a9
CB		 1946 sv_setpvn(GvSV(gv), "-", 1);
1947 SvSETMAGIC(GvSV(gv));
1948 }
1949 else if (!nextargv(gv))
1950 RETPUSHYES;
1951 }
1952 }
1953 else
1954 gv = PL_last_in_gv; /* eof */
1955 }
a0d0e21e 1956 else
146174a9 1957 gv = PL_last_in_gv = (GV*)POPs; /* eof(FH) */
4592e6ca 1958
6136c704
AL		 1959 if (gv) {
1960 IO * const io = GvIO(gv);
1961 MAGIC * mg;
1962 if (io && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) {
1963 PUSHMARK(SP);
1964 XPUSHs(SvTIED_obj((SV*)io, mg));
1965 PUTBACK;
1966 ENTER;
1967 call_method("EOF", G_SCALAR);
1968 LEAVE;
1969 SPAGAIN;
1970 RETURN;
1971 }
4592e6ca
NIS		 1972 }
1973
54310121 1974 PUSHs(boolSV(!gv || do_eof(gv)));
a0d0e21e
LW		 1975 RETURN;
1976}
1977
1978PP(pp_tell)
1979{
27da23d5 1980 dVAR; dSP; dTARGET;
301e8125 1981 GV *gv;
5b468f54 1982 IO *io;
4592e6ca 1983 MAGIC *mg;
a0d0e21e 1984
c4420975
AL		 1985 if (MAXARG != 0)
1986 PL_last_in_gv = (GV*)POPs;
1987 gv = PL_last_in_gv;
4592e6ca 1988
5b468f54
AMS		 1989 if (gv && (io = GvIO(gv))
1990 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1991 {
4592e6ca 1992 PUSHMARK(SP);
5b468f54 1993 XPUSHs(SvTIED_obj((SV*)io, mg));
4592e6ca
NIS		 1994 PUTBACK;
1995 ENTER;
864dbfa3 1996 call_method("TELL", G_SCALAR);
4592e6ca
NIS		 1997 LEAVE;
1998 SPAGAIN;
1999 RETURN;
2000 }
2001
146174a9
CB		 2002#if LSEEKSIZE > IVSIZE
2003 PUSHn( do_tell(gv) );
2004#else
a0d0e21e 2005 PUSHi( do_tell(gv) );
146174a9 2006#endif
a0d0e21e
LW		 2007 RETURN;
2008}
2009
137443ea 2010PP(pp_sysseek)
2011{
27da23d5 2012 dVAR; dSP;
5b468f54 2013 IO *io;
1df70142 2014 const int whence = POPi;
146174a9 2015#if LSEEKSIZE > IVSIZE
7452cf6a 2016 const Off_t offset = (Off_t)SvNVx(POPs);
146174a9 2017#else
7452cf6a 2018 const Off_t offset = (Off_t)SvIVx(POPs);
146174a9 2019#endif
4592e6ca 2020 MAGIC *mg;
a0d0e21e 2021
7452cf6a 2022 GV * const gv = PL_last_in_gv = (GV*)POPs;
4592e6ca 2023
5b468f54
AMS		 2024 if (gv && (io = GvIO(gv))
2025 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
2026 {
4592e6ca 2027 PUSHMARK(SP);
5b468f54 2028 XPUSHs(SvTIED_obj((SV*)io, mg));
cb50131a
CB		 2029#if LSEEKSIZE > IVSIZE
2030 XPUSHs(sv_2mortal(newSVnv((NV) offset)));
2031#else
b448e4fe 2032 XPUSHs(sv_2mortal(newSViv(offset)));
cb50131a 2033#endif
b448e4fe 2034 XPUSHs(sv_2mortal(newSViv(whence)));
4592e6ca
NIS		 2035 PUTBACK;
2036 ENTER;
864dbfa3 2037 call_method("SEEK", G_SCALAR);
4592e6ca
NIS		 2038 LEAVE;
2039 SPAGAIN;
2040 RETURN;
2041 }
2042
533c011a 2043 if (PL_op->op_type == OP_SEEK)
8903cb82 2044 PUSHs(boolSV(do_seek(gv, offset, whence)));
2045 else {
0bcc34c2 2046 const Off_t sought = do_sysseek(gv, offset, whence);
b448e4fe 2047 if (sought < 0)
146174a9
CB		 2048 PUSHs(&PL_sv_undef);
2049 else {
7452cf6a 2050 SV* const sv = sought ?
146174a9 2051#if LSEEKSIZE > IVSIZE
b448e4fe 2052 newSVnv((NV)sought)
146174a9 2053#else
b448e4fe 2054 newSViv(sought)
146174a9
CB		 2055#endif
2056 : newSVpvn(zero_but_true, ZBTLEN);
2057 PUSHs(sv_2mortal(sv));
2058 }
8903cb82 2059 }
a0d0e21e
LW		 2060 RETURN;
2061}
2062
2063PP(pp_truncate)
2064{
97aff369 2065 dVAR;
39644a26 2066 dSP;
8c99d73e
GS		 2067 /* There seems to be no consensus on the length type of truncate()
2068 * and ftruncate(), both off_t and size_t have supporters. In
2069 * general one would think that when using large files, off_t is
2070 * at least as wide as size_t, so using an off_t should be okay. */
2071 /* XXX Configure probe for the length type of *truncate() needed XXX */
0bcc34c2 2072 Off_t len;
a0d0e21e 2073
25342a55 2074#if Off_t_size > IVSIZE
0bcc34c2 2075 len = (Off_t)POPn;
8c99d73e 2076#else
0bcc34c2 2077 len = (Off_t)POPi;
8c99d73e
GS		 2078#endif
2079 /* Checking for length < 0 is problematic as the type might or
301e8125 2080 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 2081 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2082 SETERRNO(0,0);
d05c1ba0 2083 {
d05c1ba0
JH		 2084 int result = 1;
2085 GV *tmpgv;
090bf15b
SR		 2086 IO *io;
2087
d05c1ba0 2088 if (PL_op->op_flags & OPf_SPECIAL) {
f776e3cd 2089 tmpgv = gv_fetchsv(POPs, 0, SVt_PVIO);
d05c1ba0 2090
090bf15b
SR		 2091 do_ftruncate_gv:
2092 if (!GvIO(tmpgv))
2093 result = 0;
d05c1ba0 2094 else {
090bf15b
SR		 2095 PerlIO *fp;
2096 io = GvIOp(tmpgv);
2097 do_ftruncate_io:
2098 TAINT_PROPER("truncate");
2099 if (!(fp = IoIFP(io))) {
2100 result = 0;
2101 }
2102 else {
2103 PerlIO_flush(fp);
cbdc8872 2104#ifdef HAS_TRUNCATE
090bf15b 2105 if (ftruncate(PerlIO_fileno(fp), len) < 0)
301e8125 2106#else
090bf15b 2107 if (my_chsize(PerlIO_fileno(fp), len) < 0)
cbdc8872 2108#endif
090bf15b
SR		 2109 result = 0;
2110 }
d05c1ba0 2111 }
cbdc8872 2112 }
d05c1ba0 2113 else {
7452cf6a 2114 SV * const sv = POPs;
83003860 2115 const char *name;
7a5fd60d 2116
d05c1ba0
JH		 2117 if (SvTYPE(sv) == SVt_PVGV) {
2118 tmpgv = (GV*)sv; /* *main::FRED for example */
090bf15b 2119 goto do_ftruncate_gv;
d05c1ba0
JH		 2120 }
2121 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2122 tmpgv = (GV*) SvRV(sv); /* \*main::FRED for example */
090bf15b
SR		 2123 goto do_ftruncate_gv;
2124 }
2125 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2126 io = (IO*) SvRV(sv); /* *main::FRED{IO} for example */
2127 goto do_ftruncate_io;
d05c1ba0 2128 }
1e422769 2129
83003860 2130 name = SvPV_nolen_const(sv);
d05c1ba0 2131 TAINT_PROPER("truncate");
cbdc8872 2132#ifdef HAS_TRUNCATE
d05c1ba0
JH		 2133 if (truncate(name, len) < 0)
2134 result = 0;
cbdc8872 2135#else
d05c1ba0 2136 {
7452cf6a 2137 const int tmpfd = PerlLIO_open(name, O_RDWR);
d05c1ba0 2138
7452cf6a 2139 if (tmpfd < 0)
cbdc8872 2140 result = 0;
d05c1ba0
JH		 2141 else {
2142 if (my_chsize(tmpfd, len) < 0)
2143 result = 0;
2144 PerlLIO_close(tmpfd);
2145 }
cbdc8872 2146 }
a0d0e21e 2147#endif
d05c1ba0 2148 }
a0d0e21e 2149
d05c1ba0
JH		 2150 if (result)
2151 RETPUSHYES;
2152 if (!errno)
93189314 2153 SETERRNO(EBADF,RMS_IFI);
d05c1ba0
JH		 2154 RETPUSHUNDEF;
2155 }
a0d0e21e
LW		 2156}
2157
a0d0e21e
LW		 2158PP(pp_ioctl)
2159{
97aff369 2160 dVAR; dSP; dTARGET;
7452cf6a 2161 SV * const argsv = POPs;
1df70142 2162 const unsigned int func = POPu;
e1ec3a88 2163 const int optype = PL_op->op_type;
7452cf6a
AL		 2164 GV * const gv = (GV*)POPs;
2165 IO * const io = gv ? GvIOn(gv) : Null(IO*);
a0d0e21e 2166 char *s;
324aa91a 2167 IV retval;
a0d0e21e 2168
748a9306 2169 if (!io || !argsv || !IoIFP(io)) {
c289d2f7
JH		 2170 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2171 report_evil_fh(gv, io, PL_op->op_type);
93189314 2172 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
a0d0e21e
LW		 2173 RETPUSHUNDEF;
2174 }
2175
748a9306 2176 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2177 STRLEN len;
324aa91a 2178 STRLEN need;
748a9306 2179 s = SvPV_force(argsv, len);
324aa91a
HF		 2180 need = IOCPARM_LEN(func);
2181 if (len < need) {
2182 s = Sv_Grow(argsv, need + 1);
2183 SvCUR_set(argsv, need);
a0d0e21e
LW		 2184 }
2185
748a9306 2186 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW		 2187 }
2188 else {
748a9306 2189 retval = SvIV(argsv);
c529f79d 2190 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW		 2191 }
2192
ed4b2e6b 2193 TAINT_PROPER(PL_op_desc[optype]);
a0d0e21e
LW		 2194
2195 if (optype == OP_IOCTL)
2196#ifdef HAS_IOCTL
76e3520e 2197 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2198#else
cea2e8a9 2199 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW		 2200#endif
2201 else
c214f4ad
WB		 2202#ifndef HAS_FCNTL
2203 DIE(aTHX_ "fcntl is not implemented");
2204#else
55497cff 2205#if defined(OS2) && defined(__EMX__)
760ac839 2206 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2207#else
760ac839 2208 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2209#endif
6652bd42 2210#endif
a0d0e21e 2211
6652bd42 2212#if defined(HAS_IOCTL) || defined(HAS_FCNTL)
748a9306
LW		 2213 if (SvPOK(argsv)) {
2214 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2215 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
53e06cf0 2216 OP_NAME(PL_op));
748a9306
LW		 2217 s[SvCUR(argsv)] = 0; /* put our null back */
2218 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW		 2219 }
2220
2221 if (retval == -1)
2222 RETPUSHUNDEF;
2223 if (retval != 0) {
2224 PUSHi(retval);
2225 }
2226 else {
8903cb82 2227 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e 2228 }
4808266b 2229#endif
c214f4ad 2230 RETURN;
a0d0e21e
LW		 2231}
2232
2233PP(pp_flock)
2234{
9cad6237 2235#ifdef FLOCK
97aff369 2236 dVAR; dSP; dTARGET;
a0d0e21e 2237 I32 value;
bc37a18f 2238 IO *io = NULL;
760ac839 2239 PerlIO *fp;
7452cf6a
AL		 2240 const int argtype = POPi;
2241 GV * const gv = (MAXARG == 0) ? PL_last_in_gv : (GV*)POPs;
16d20bd9 2242
bc37a18f
RG		 2243 if (gv && (io = GvIO(gv)))
2244 fp = IoIFP(io);
2245 else {
a0d0e21e 2246 fp = Nullfp;
bc37a18f
RG		 2247 io = NULL;
2248 }
0bcc34c2 2249 /* XXX Looks to me like io is always NULL at this point */
a0d0e21e 2250 if (fp) {
68dc0745 2251 (void)PerlIO_flush(fp);
76e3520e 2252 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2253 }
cb50131a 2254 else {
bc37a18f
RG		 2255 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2256 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 2257 value = 0;
93189314 2258 SETERRNO(EBADF,RMS_IFI);
cb50131a 2259 }
a0d0e21e
LW		 2260 PUSHi(value);
2261 RETURN;
2262#else
cea2e8a9 2263 DIE(aTHX_ PL_no_func, "flock()");
a0d0e21e
LW		 2264#endif
2265}
2266
2267/* Sockets. */
2268
2269PP(pp_socket)
2270{
a0d0e21e 2271#ifdef HAS_SOCKET
97aff369 2272 dVAR; dSP;
7452cf6a
AL		 2273 const int protocol = POPi;
2274 const int type = POPi;
2275 const int domain = POPi;
2276 GV * const gv = (GV*)POPs;
2277 register IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e
LW		 2278 int fd;
2279
c289d2f7
JH		 2280 if (!gv || !io) {
2281 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2282 report_evil_fh(gv, io, PL_op->op_type);
2283 if (IoIFP(io))
2284 do_close(gv, FALSE);
93189314 2285 SETERRNO(EBADF,LIB_INVARG);
a0d0e21e
LW		 2286 RETPUSHUNDEF;
2287 }
2288
57171420
BS		 2289 if (IoIFP(io))
2290 do_close(gv, FALSE);
2291
a0d0e21e 2292 TAINT_PROPER("socket");
6ad3d225 2293 fd = PerlSock_socket(domain, type, protocol);
a0d0e21e
LW		 2294 if (fd < 0)
2295 RETPUSHUNDEF;
460c8493
IZ		 2296 IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2297 IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2298 IoTYPE(io) = IoTYPE_SOCKET;
a0d0e21e 2299 if (!IoIFP(io) || !IoOFP(io)) {
760ac839
LW		 2300 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2301 if (IoOFP(io)) PerlIO_close(IoOFP(io));
6ad3d225 2302 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
a0d0e21e
LW		 2303 RETPUSHUNDEF;
2304 }
8d2a6795
GS		 2305#if defined(HAS_FCNTL) && defined(F_SETFD)
2306 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2307#endif
a0d0e21e 2308
d5ff79b3
OF		 2309#ifdef EPOC
2310 setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
2311#endif
2312
a0d0e21e
LW		 2313 RETPUSHYES;
2314#else
cea2e8a9 2315 DIE(aTHX_ PL_no_sock_func, "socket");
a0d0e21e
LW		 2316#endif
2317}
2318
2319PP(pp_sockpair)
2320{
c95c94b1 2321#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
97aff369 2322 dVAR; dSP;
7452cf6a
AL		 2323 const int protocol = POPi;
2324 const int type = POPi;
2325 const int domain = POPi;
2326 GV * const gv2 = (GV*)POPs;
2327 GV * const gv1 = (GV*)POPs;
2328 register IO * const io1 = gv1 ? GvIOn(gv1) : NULL;
2329 register IO * const io2 = gv2 ? GvIOn(gv2) : NULL;
a0d0e21e
LW		 2330 int fd[2];
2331
c289d2f7
JH		 2332 if (!gv1 || !gv2 || !io1 || !io2) {
2333 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
2334 if (!gv1 || !io1)
2335 report_evil_fh(gv1, io1, PL_op->op_type);
2336 if (!gv2 || !io2)
2337 report_evil_fh(gv1, io2, PL_op->op_type);
2338 }
2339 if (IoIFP(io1))
2340 do_close(gv1, FALSE);
2341 if (IoIFP(io2))
2342 do_close(gv2, FALSE);
a0d0e21e 2343 RETPUSHUNDEF;
c289d2f7 2344 }
a0d0e21e 2345
dc0d0a5f
JH		 2346 if (IoIFP(io1))
2347 do_close(gv1, FALSE);
2348 if (IoIFP(io2))
2349 do_close(gv2, FALSE);
57171420 2350
a0d0e21e 2351 TAINT_PROPER("socketpair");
6ad3d225 2352 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
a0d0e21e 2353 RETPUSHUNDEF;
460c8493
IZ		 2354 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2355 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
50952442 2356 IoTYPE(io1) = IoTYPE_SOCKET;
460c8493
IZ		 2357 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2358 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
50952442 2359 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2360 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW		 2361 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2362 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2363 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW		 2364 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2365 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2366 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW		 2367 RETPUSHUNDEF;
2368 }
8d2a6795
GS		 2369#if defined(HAS_FCNTL) && defined(F_SETFD)
2370 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2371 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2372#endif
a0d0e21e
LW		 2373
2374 RETPUSHYES;
2375#else
cea2e8a9 2376 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW		 2377#endif
2378}
2379
2380PP(pp_bind)
2381{
a0d0e21e 2382#ifdef HAS_SOCKET
97aff369 2383 dVAR; dSP;
7452cf6a 2384 SV * const addrsv = POPs;
349d4f2f
NC		 2385 /* OK, so on what platform does bind modify addr? */
2386 const char *addr;
7452cf6a
AL		 2387 GV * const gv = (GV*)POPs;
2388 register IO * const io = GvIOn(gv);
a0d0e21e 2389 STRLEN len;
eec2d3df 2390 int bind_ok = 0;
a0d0e21e
LW		 2391
2392 if (!io || !IoIFP(io))
2393 goto nuts;
2394
349d4f2f 2395 addr = SvPV_const(addrsv, len);
a0d0e21e 2396 TAINT_PROPER("bind");
eec2d3df
GS		 2397 if (PerlSock_bind(PerlIO_fileno(IoIFP(io)),
2398 (struct sockaddr *)addr, len) >= 0)
2399 bind_ok = 1;
2400
eec2d3df
GS		 2401
2402 if (bind_ok)
a0d0e21e
LW		 2403 RETPUSHYES;
2404 else
2405 RETPUSHUNDEF;
2406
2407nuts:
599cee73 2408 if (ckWARN(WARN_CLOSED))
bc37a18f 2409 report_evil_fh(gv, io, PL_op->op_type);
93189314 2410 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2411 RETPUSHUNDEF;
2412#else
cea2e8a9 2413 DIE(aTHX_ PL_no_sock_func, "bind");
a0d0e21e
LW		 2414#endif
2415}
2416
2417PP(pp_connect)
2418{
a0d0e21e 2419#ifdef HAS_SOCKET
97aff369 2420 dVAR; dSP;
7452cf6a
AL		 2421 SV * const addrsv = POPs;
2422 GV * const gv = (GV*)POPs;
2423 register IO * const io = GvIOn(gv);
349d4f2f 2424 const char *addr;
a0d0e21e
LW		 2425 STRLEN len;
2426
2427 if (!io || !IoIFP(io))
2428 goto nuts;
2429
349d4f2f 2430 addr = SvPV_const(addrsv, len);
a0d0e21e 2431 TAINT_PROPER("connect");
6ad3d225 2432 if (PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
a0d0e21e
LW		 2433 RETPUSHYES;
2434 else
2435 RETPUSHUNDEF;
2436
2437nuts:
599cee73 2438 if (ckWARN(WARN_CLOSED))
bc37a18f 2439 report_evil_fh(gv, io, PL_op->op_type);
93189314 2440 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2441 RETPUSHUNDEF;
2442#else
cea2e8a9 2443 DIE(aTHX_ PL_no_sock_func, "connect");
a0d0e21e
LW		 2444#endif
2445}
2446
2447PP(pp_listen)
2448{
a0d0e21e 2449#ifdef HAS_SOCKET
97aff369 2450 dVAR; dSP;
7452cf6a
AL		 2451 const int backlog = POPi;
2452 GV * const gv = (GV*)POPs;
2453 register IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2454
c289d2f7 2455 if (!gv || !io || !IoIFP(io))
a0d0e21e
LW		 2456 goto nuts;
2457
6ad3d225 2458 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW		 2459 RETPUSHYES;
2460 else
2461 RETPUSHUNDEF;
2462
2463nuts:
599cee73 2464 if (ckWARN(WARN_CLOSED))
bc37a18f 2465 report_evil_fh(gv, io, PL_op->op_type);
93189314 2466 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2467 RETPUSHUNDEF;
2468#else
cea2e8a9 2469 DIE(aTHX_ PL_no_sock_func, "listen");
a0d0e21e
LW		 2470#endif
2471}
2472
2473PP(pp_accept)
2474{
a0d0e21e 2475#ifdef HAS_SOCKET
97aff369 2476 dVAR; dSP; dTARGET;
a0d0e21e
LW		 2477 register IO *nstio;
2478 register IO *gstio;
93d47a36
JH		 2479 char namebuf[MAXPATHLEN];
2480#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
2481 Sock_size_t len = sizeof (struct sockaddr_in);
2482#else
2483 Sock_size_t len = sizeof namebuf;
2484#endif
7452cf6a
AL		 2485 GV * const ggv = (GV*)POPs;
2486 GV * const ngv = (GV*)POPs;
a0d0e21e
LW		 2487 int fd;
2488
a0d0e21e
LW		 2489 if (!ngv)
2490 goto badexit;
2491 if (!ggv)
2492 goto nuts;
2493
2494 gstio = GvIO(ggv);
2495 if (!gstio || !IoIFP(gstio))
2496 goto nuts;
2497
2498 nstio = GvIOn(ngv);
93d47a36 2499 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
a0d0e21e
LW		 2500 if (fd < 0)
2501 goto badexit;
a70048fb
AB		 2502 if (IoIFP(nstio))
2503 do_close(ngv, FALSE);
460c8493
IZ		 2504 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2505 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2506 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2507 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW		 2508 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2509 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2510 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW		 2511 goto badexit;
2512 }
8d2a6795
GS		 2513#if defined(HAS_FCNTL) && defined(F_SETFD)
2514 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2515#endif
a0d0e21e 2516
ed79a026 2517#ifdef EPOC
93d47a36 2518 len = sizeof (struct sockaddr_in); /* EPOC somehow truncates info */
a9f1f6b0 2519 setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
ed79a026 2520#endif
381c1bae 2521#ifdef __SCO_VERSION__
93d47a36 2522 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
381c1bae 2523#endif
ed79a026 2524
93d47a36 2525 PUSHp(namebuf, len);
a0d0e21e
LW		 2526 RETURN;
2527
2528nuts:
599cee73 2529 if (ckWARN(WARN_CLOSED))
bc37a18f 2530 report_evil_fh(ggv, ggv ? GvIO(ggv) : 0, PL_op->op_type);
93189314 2531 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2532
2533badexit:
2534 RETPUSHUNDEF;
2535
2536#else
cea2e8a9 2537 DIE(aTHX_ PL_no_sock_func, "accept");
a0d0e21e
LW		 2538#endif
2539}
2540
2541PP(pp_shutdown)
2542{
a0d0e21e 2543#ifdef HAS_SOCKET
97aff369 2544 dVAR; dSP; dTARGET;
7452cf6a
AL		 2545 const int how = POPi;
2546 GV * const gv = (GV*)POPs;
2547 register IO * const io = GvIOn(gv);
a0d0e21e
LW		 2548
2549 if (!io || !IoIFP(io))
2550 goto nuts;
2551
6ad3d225 2552 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW		 2553 RETURN;
2554
2555nuts:
599cee73 2556 if (ckWARN(WARN_CLOSED))
bc37a18f 2557 report_evil_fh(gv, io, PL_op->op_type);
93189314 2558 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2559 RETPUSHUNDEF;
2560#else
cea2e8a9 2561 DIE(aTHX_ PL_no_sock_func, "shutdown");
a0d0e21e
LW		 2562#endif
2563}
2564
a0d0e21e
LW		 2565PP(pp_ssockopt)
2566{
a0d0e21e 2567#ifdef HAS_SOCKET
97aff369 2568 dVAR; dSP;
7452cf6a 2569 const int optype = PL_op->op_type;
561b68a9 2570 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
7452cf6a
AL		 2571 const unsigned int optname = (unsigned int) POPi;
2572 const unsigned int lvl = (unsigned int) POPi;
2573 GV * const gv = (GV*)POPs;
2574 register IO * const io = GvIOn(gv);
a0d0e21e 2575 int fd;
1e422769 2576 Sock_size_t len;
a0d0e21e 2577
a0d0e21e
LW		 2578 if (!io || !IoIFP(io))
2579 goto nuts;
2580
760ac839 2581 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2582 switch (optype) {
2583 case OP_GSOCKOPT:
748a9306 2584 SvGROW(sv, 257);
a0d0e21e 2585 (void)SvPOK_only(sv);
748a9306
LW		 2586 SvCUR_set(sv,256);
2587 *SvEND(sv) ='\0';
1e422769 2588 len = SvCUR(sv);
6ad3d225 2589 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2590 goto nuts2;
1e422769 2591 SvCUR_set(sv, len);
748a9306 2592 *SvEND(sv) ='\0';
a0d0e21e
LW		 2593 PUSHs(sv);
2594 break;
2595 case OP_SSOCKOPT: {
1215b447
JH		 2596#if defined(__SYMBIAN32__)
2597# define SETSOCKOPT_OPTION_VALUE_T void *
2598#else
2599# define SETSOCKOPT_OPTION_VALUE_T const char *
2600#endif
2601 /* XXX TODO: We need to have a proper type (a Configure probe,
2602 * etc.) for what the C headers think of the third argument of
2603 * setsockopt(), the option_value read-only buffer: is it
2604 * a "char *", or a "void *", const or not. Some compilers
2605 * don't take kindly to e.g. assuming that "char *" implicitly
2606 * promotes to a "void *", or to explicitly promoting/demoting
2607 * consts to non/vice versa. The "const void *" is the SUS
2608 * definition, but that does not fly everywhere for the above
2609 * reasons. */
2610 SETSOCKOPT_OPTION_VALUE_T buf;
1e422769 2611 int aint;
2612 if (SvPOKp(sv)) {
2d8e6c8d 2613 STRLEN l;
1215b447 2614 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2d8e6c8d 2615 len = l;
1e422769 2616 }
56ee1660 2617 else {
a0d0e21e 2618 aint = (int)SvIV(sv);
1215b447 2619 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
a0d0e21e
LW		 2620 len = sizeof(int);
2621 }
6ad3d225 2622 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2623 goto nuts2;
3280af22 2624 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 2625 }
2626 break;
2627 }
2628 RETURN;
2629
2630nuts:
599cee73 2631 if (ckWARN(WARN_CLOSED))
bc37a18f 2632 report_evil_fh(gv, io, optype);
93189314 2633 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2634nuts2:
2635 RETPUSHUNDEF;
2636
2637#else
af51a00e 2638 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 2639#endif
2640}
2641
a0d0e21e
LW		 2642PP(pp_getpeername)
2643{
a0d0e21e 2644#ifdef HAS_SOCKET
97aff369 2645 dVAR; dSP;
7452cf6a
AL		 2646 const int optype = PL_op->op_type;
2647 GV * const gv = (GV*)POPs;
2648 register IO * const io = GvIOn(gv);
2649 Sock_size_t len;
a0d0e21e
LW		 2650 SV *sv;
2651 int fd;
a0d0e21e
LW		 2652
2653 if (!io || !IoIFP(io))
2654 goto nuts;
2655
561b68a9 2656 sv = sv_2mortal(newSV(257));
748a9306 2657 (void)SvPOK_only(sv);
1e422769 2658 len = 256;
2659 SvCUR_set(sv, len);
748a9306 2660 *SvEND(sv) ='\0';
760ac839 2661 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2662 switch (optype) {
2663 case OP_GETSOCKNAME:
6ad3d225 2664 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW		 2665 goto nuts2;
2666 break;
2667 case OP_GETPEERNAME:
6ad3d225 2668 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2669 goto nuts2;
490ab354
JH		 2670#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2671 {
2672 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";
2673 /* If the call succeeded, make sure we don't have a zeroed port/addr */
349d4f2f 2674 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2fbb330f 2675 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
490ab354 2676 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2677 goto nuts2;
490ab354
JH		 2678 }
2679 }
2680#endif
a0d0e21e
LW		 2681 break;
2682 }
13826f2c
CS		 2683#ifdef BOGUS_GETNAME_RETURN
2684 /* Interactive Unix, getpeername() and getsockname()
2685 does not return valid namelen */
1e422769 2686 if (len == BOGUS_GETNAME_RETURN)
2687 len = sizeof(struct sockaddr);
13826f2c 2688#endif
1e422769 2689 SvCUR_set(sv, len);
748a9306 2690 *SvEND(sv) ='\0';
a0d0e21e
LW		 2691 PUSHs(sv);
2692 RETURN;
2693
2694nuts:
599cee73 2695 if (ckWARN(WARN_CLOSED))
bc37a18f 2696 report_evil_fh(gv, io, optype);
93189314 2697 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2698nuts2:
2699 RETPUSHUNDEF;
2700
2701#else
af51a00e 2702 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 2703#endif
2704}
2705
2706/* Stat calls. */
2707
a0d0e21e
LW		 2708PP(pp_stat)
2709{
97aff369 2710 dVAR;
39644a26 2711 dSP;
2dd78f96 2712 GV *gv;
54310121 2713 I32 gimme;
a0d0e21e
LW		 2714 I32 max = 13;
2715
533c011a 2716 if (PL_op->op_flags & OPf_REF) {
2dd78f96 2717 gv = cGVOP_gv;
8a4e5b40 2718 if (PL_op->op_type == OP_LSTAT) {
5d3e98de 2719 if (gv != PL_defgv) {
5d329e6e 2720 do_fstat_warning_check:
5d3e98de 2721 if (ckWARN(WARN_IO))
9014280d 2722 Perl_warner(aTHX_ packWARN(WARN_IO),
5d3e98de
RGS		 2723 "lstat() on filehandle %s", GvENAME(gv));
2724 } else if (PL_laststype != OP_LSTAT)
8a4e5b40 2725 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
8a4e5b40
DD		 2726 }
2727
748a9306 2728 do_fstat:
2dd78f96 2729 if (gv != PL_defgv) {
3280af22 2730 PL_laststype = OP_STAT;
2dd78f96 2731 PL_statgv = gv;
c69006e4 2732 sv_setpvn(PL_statname, "", 0);
2dd78f96
JH		 2733 PL_laststatval = (GvIO(gv) && IoIFP(GvIOp(gv))
2734 ? PerlLIO_fstat(PerlIO_fileno(IoIFP(GvIOn(gv))), &PL_statcache) : -1);
a0d0e21e 2735 }
9ddeeac9 2736 if (PL_laststatval < 0) {
2dd78f96
JH		 2737 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2738 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
a0d0e21e 2739 max = 0;
9ddeeac9 2740 }
a0d0e21e
LW		 2741 }
2742 else {
7452cf6a 2743 SV* const sv = POPs;
748a9306 2744 if (SvTYPE(sv) == SVt_PVGV) {
2dd78f96 2745 gv = (GV*)sv;
748a9306
LW		 2746 goto do_fstat;
2747 }
2748 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2dd78f96 2749 gv = (GV*)SvRV(sv);
5d329e6e
NC		 2750 if (PL_op->op_type == OP_LSTAT)
2751 goto do_fstat_warning_check;
748a9306
LW		 2752 goto do_fstat;
2753 }
0510663f 2754 sv_setpv(PL_statname, SvPV_nolen_const(sv));
a0714e2c 2755 PL_statgv = NULL;
533c011a
NIS		 2756 PL_laststype = PL_op->op_type;
2757 if (PL_op->op_type == OP_LSTAT)
0510663f 2758 PL_laststatval = PerlLIO_lstat(SvPV_nolen_const(PL_statname), &PL_statcache);
a0d0e21e 2759 else
0510663f 2760 PL_laststatval = PerlLIO_stat(SvPV_nolen_const(PL_statname), &PL_statcache);
3280af22 2761 if (PL_laststatval < 0) {
0510663f 2762 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname), '\n'))
9014280d 2763 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
a0d0e21e
LW		 2764 max = 0;
2765 }
2766 }
2767
54310121 2768 gimme = GIMME_V;
2769 if (gimme != G_ARRAY) {
2770 if (gimme != G_VOID)
2771 XPUSHs(boolSV(max));
2772 RETURN;
a0d0e21e
LW		 2773 }
2774 if (max) {
36477c24 2775 EXTEND(SP, max);
2776 EXTEND_MORTAL(max);
1ff81528
PL		 2777 PUSHs(sv_2mortal(newSViv(PL_statcache.st_dev)));
2778 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ino)));
b448e4fe
JH		 2779 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_mode)));
2780 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_nlink)));
146174a9
CB		 2781#if Uid_t_size > IVSIZE
2782 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_uid)));
2783#else
23dcd6c8 2784# if Uid_t_sign <= 0
1ff81528 2785 PUSHs(sv_2mortal(newSViv(PL_statcache.st_uid)));
23dcd6c8
JH		 2786# else
2787 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_uid)));
2788# endif
146174a9 2789#endif
301e8125 2790#if Gid_t_size > IVSIZE
146174a9
CB		 2791 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_gid)));
2792#else
23dcd6c8 2793# if Gid_t_sign <= 0
1ff81528 2794 PUSHs(sv_2mortal(newSViv(PL_statcache.st_gid)));
23dcd6c8
JH		 2795# else
2796 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_gid)));
2797# endif
146174a9 2798#endif
cbdc8872 2799#ifdef USE_STAT_RDEV
1ff81528 2800 PUSHs(sv_2mortal(newSViv(PL_statcache.st_rdev)));
cbdc8872 2801#else
396482e1 2802 PUSHs(sv_2mortal(newSVpvs("")));
cbdc8872 2803#endif
146174a9 2804#if Off_t_size > IVSIZE
4a9d6100 2805 PUSHs(sv_2mortal(newSVnv((NV)PL_statcache.st_size)));
146174a9 2806#else
1ff81528 2807 PUSHs(sv_2mortal(newSViv(PL_statcache.st_size)));
146174a9 2808#endif
cbdc8872 2809#ifdef BIG_TIME
172ae379
JH		 2810 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_atime)));
2811 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_mtime)));
2812 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_ctime)));
cbdc8872 2813#else
1ff81528
PL		 2814 PUSHs(sv_2mortal(newSViv(PL_statcache.st_atime)));
2815 PUSHs(sv_2mortal(newSViv(PL_statcache.st_mtime)));
2816 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ctime)));
cbdc8872 2817#endif
a0d0e21e 2818#ifdef USE_STAT_BLOCKS
b448e4fe
JH		 2819 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blksize)));
2820 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blocks)));
a0d0e21e 2821#else
396482e1
GA		 2822 PUSHs(sv_2mortal(newSVpvs("")));
2823 PUSHs(sv_2mortal(newSVpvs("")));
a0d0e21e
LW		 2824#endif
2825 }
2826 RETURN;
2827}
2828
fbb0b3b3
RGS		 2829/* This macro is used by the stacked filetest operators :
2830 * if the previous filetest failed, short-circuit and pass its value.
2831 * Else, discard it from the stack and continue. --rgs
2832 */
2833#define STACKED_FTEST_CHECK if (PL_op->op_private & OPpFT_STACKED) { \
2834 if (TOPs == &PL_sv_no || TOPs == &PL_sv_undef) { RETURN; } \
2835 else { (void)POPs; PUTBACK; } \
2836 }
2837
a0d0e21e
LW		 2838PP(pp_ftrread)
2839{
97aff369 2840 dVAR;
9cad6237 2841 I32 result;
af9e49b4
NC		 2842 /* Not const, because things tweak this below. Not bool, because there's
2843 no guarantee that OPp_FT_ACCESS is <= CHAR_MAX */
2844#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2845 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
2846 /* Giving some sort of initial value silences compilers. */
2847# ifdef R_OK
2848 int access_mode = R_OK;
2849# else
2850 int access_mode = 0;
2851# endif
5ff3f7a4 2852#else
af9e49b4
NC		 2853 /* access_mode is never used, but leaving use_access in makes the
2854 conditional compiling below much clearer. */
2855 I32 use_access = 0;
5ff3f7a4 2856#endif
af9e49b4 2857 int stat_mode = S_IRUSR;
a0d0e21e 2858
af9e49b4 2859 bool effective = FALSE;
2a3ff820 2860 dSP;
af9e49b4 2861
fbb0b3b3 2862 STACKED_FTEST_CHECK;
af9e49b4
NC		 2863
2864 switch (PL_op->op_type) {
2865 case OP_FTRREAD:
2866#if !(defined(HAS_ACCESS) && defined(R_OK))
2867 use_access = 0;
2868#endif
2869 break;
2870
2871 case OP_FTRWRITE:
5ff3f7a4 2872#if defined(HAS_ACCESS) && defined(W_OK)
af9e49b4 2873 access_mode = W_OK;
5ff3f7a4 2874#else
af9e49b4 2875 use_access = 0;
5ff3f7a4 2876#endif
af9e49b4
NC		 2877 stat_mode = S_IWUSR;
2878 break;
a0d0e21e 2879
af9e49b4 2880 case OP_FTREXEC:
5ff3f7a4 2881#if defined(HAS_ACCESS) && defined(X_OK)
af9e49b4 2882 access_mode = X_OK;
5ff3f7a4 2883#else
af9e49b4 2884 use_access = 0;
5ff3f7a4 2885#endif
af9e49b4
NC		 2886 stat_mode = S_IXUSR;
2887 break;
a0d0e21e 2888
af9e49b4 2889 case OP_FTEWRITE:
faee0e31 2890#ifdef PERL_EFF_ACCESS
af9e49b4 2891 access_mode = W_OK;
5ff3f7a4 2892#endif
af9e49b4
NC		 2893 stat_mode = S_IWUSR;
2894 /* Fall through */
a0d0e21e 2895
af9e49b4
NC		 2896 case OP_FTEREAD:
2897#ifndef PERL_EFF_ACCESS
2898 use_access = 0;
2899#endif
2900 effective = TRUE;
2901 break;
2902
2903
2904 case OP_FTEEXEC:
faee0e31 2905#ifdef PERL_EFF_ACCESS
af9e49b4 2906 access_mode = W_OK;
5ff3f7a4 2907#else
af9e49b4 2908 use_access = 0;
5ff3f7a4 2909#endif
af9e49b4
NC		 2910 stat_mode = S_IXUSR;
2911 effective = TRUE;
2912 break;
2913 }
a0d0e21e 2914
af9e49b4
NC		 2915 if (use_access) {
2916#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2917 const char *const name = POPpx;
2918 if (effective) {
2919# ifdef PERL_EFF_ACCESS
2920 result = PERL_EFF_ACCESS(name, access_mode);
2921# else
2922 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
2923 OP_NAME(PL_op));
2924# endif
2925 }
2926 else {
2927# ifdef HAS_ACCESS
2928 result = access(name, access_mode);
2929# else
2930 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
2931# endif
2932 }
5ff3f7a4
GS		 2933 if (result == 0)
2934 RETPUSHYES;
2935 if (result < 0)
2936 RETPUSHUNDEF;
2937 RETPUSHNO;
af9e49b4 2938#endif
22865c03 2939 }
af9e49b4 2940
cea2e8a9 2941 result = my_stat();
22865c03 2942 SPAGAIN;
a0d0e21e
LW		 2943 if (result < 0)
2944 RETPUSHUNDEF;
af9e49b4 2945 if (cando(stat_mode, effective, &PL_statcache))
a0d0e21e
LW		 2946 RETPUSHYES;
2947 RETPUSHNO;
2948}
2949
2950PP(pp_ftis)
2951{
97aff369 2952 dVAR;
fbb0b3b3 2953 I32 result;
d7f0a2f4 2954 const int op_type = PL_op->op_type;
2a3ff820 2955 dSP;
fbb0b3b3
RGS		 2956 STACKED_FTEST_CHECK;
2957 result = my_stat();
2958 SPAGAIN;
a0d0e21e
LW		 2959 if (result < 0)
2960 RETPUSHUNDEF;
d7f0a2f4
NC		 2961 if (op_type == OP_FTIS)
2962 RETPUSHYES;
957b0e1d 2963 {
d7f0a2f4
NC		 2964 /* You can't dTARGET inside OP_FTIS, because you'll get
2965 "panic: pad_sv po" - the op is not flagged to have a target. */
957b0e1d 2966 dTARGET;
d7f0a2f4 2967 switch (op_type) {
957b0e1d
NC		 2968 case OP_FTSIZE:
2969#if Off_t_size > IVSIZE
2970 PUSHn(PL_statcache.st_size);
2971#else
2972 PUSHi(PL_statcache.st_size);
2973#endif
2974 break;
2975 case OP_FTMTIME:
2976 PUSHn( (((NV)PL_basetime - PL_statcache.st_mtime)) / 86400.0 );
2977 break;
2978 case OP_FTATIME:
2979 PUSHn( (((NV)PL_basetime - PL_statcache.st_atime)) / 86400.0 );
2980 break;
2981 case OP_FTCTIME:
2982 PUSHn( (((NV)PL_basetime - PL_statcache.st_ctime)) / 86400.0 );
2983 break;
2984 }
2985 }
2986 RETURN;
a0d0e21e
LW		 2987}
2988
a0d0e21e
LW		 2989PP(pp_ftrowned)
2990{
97aff369 2991 dVAR;
fbb0b3b3 2992 I32 result;
2a3ff820 2993 dSP;
17ad201a
NC		 2994
2995 /* I believe that all these three are likely to be defined on most every
2996 system these days. */
2997#ifndef S_ISUID
2998 if(PL_op->op_type == OP_FTSUID)
2999 RETPUSHNO;
3000#endif
3001#ifndef S_ISGID
3002 if(PL_op->op_type == OP_FTSGID)
3003 RETPUSHNO;
3004#endif
3005#ifndef S_ISVTX
3006 if(PL_op->op_type == OP_FTSVTX)
3007 RETPUSHNO;
3008#endif
3009
fbb0b3b3
RGS		 3010 STACKED_FTEST_CHECK;
3011 result = my_stat();
3012 SPAGAIN;
a0d0e21e
LW		 3013 if (result < 0)
3014 RETPUSHUNDEF;
f1cb2d48
NC		 3015 switch (PL_op->op_type) {
3016 case OP_FTROWNED:
9ab9fa88 3017 if (PL_statcache.st_uid == PL_uid)
f1cb2d48
NC		 3018 RETPUSHYES;
3019 break;
3020 case OP_FTEOWNED:
3021 if (PL_statcache.st_uid == PL_euid)
3022 RETPUSHYES;
3023 break;
3024 case OP_FTZERO:
3025 if (PL_statcache.st_size == 0)
3026 RETPUSHYES;
3027 break;
3028 case OP_FTSOCK:
3029 if (S_ISSOCK(PL_statcache.st_mode))
3030 RETPUSHYES;
3031 break;
3032 case OP_FTCHR:
3033 if (S_ISCHR(PL_statcache.st_mode))
3034 RETPUSHYES;
3035 break;
3036 case OP_FTBLK:
3037 if (S_ISBLK(PL_statcache.st_mode))
3038 RETPUSHYES;
3039 break;
3040 case OP_FTFILE:
3041 if (S_ISREG(PL_statcache.st_mode))
3042 RETPUSHYES;
3043 break;
3044 case OP_FTDIR:
3045 if (S_ISDIR(PL_statcache.st_mode))
3046 RETPUSHYES;
3047 break;
3048 case OP_FTPIPE:
3049 if (S_ISFIFO(PL_statcache.st_mode))
3050 RETPUSHYES;
3051 break;
a0d0e21e 3052#ifdef S_ISUID
17ad201a
NC		 3053 case OP_FTSUID:
3054 if (PL_statcache.st_mode & S_ISUID)
3055 RETPUSHYES;
3056 break;
a0d0e21e 3057#endif
a0d0e21e 3058#ifdef S_ISGID
17ad201a
NC		 3059 case OP_FTSGID:
3060 if (PL_statcache.st_mode & S_ISGID)
3061 RETPUSHYES;
3062 break;
3063#endif
3064#ifdef S_ISVTX
3065 case OP_FTSVTX:
3066 if (PL_statcache.st_mode & S_ISVTX)
3067 RETPUSHYES;
3068 break;
a0d0e21e 3069#endif
17ad201a 3070 }
a0d0e21e
LW		 3071 RETPUSHNO;
3072}
3073
17ad201a 3074PP(pp_ftlink)
a0d0e21e 3075{
97aff369 3076 dVAR;
17ad201a 3077 I32 result = my_lstat();
39644a26 3078 dSP;
a0d0e21e
LW		 3079 if (result < 0)
3080 RETPUSHUNDEF;
17ad201a 3081 if (S_ISLNK(PL_statcache.st_mode))
a0d0e21e 3082 RETPUSHYES;
a0d0e21e
LW		 3083 RETPUSHNO;
3084}
3085
3086PP(pp_fttty)
3087{
97aff369 3088 dVAR;
39644a26 3089 dSP;
a0d0e21e
LW		 3090 int fd;
3091 GV *gv;
a0714e2c 3092 SV *tmpsv = NULL;
fb73857a 3093
fbb0b3b3
RGS		 3094 STACKED_FTEST_CHECK;
3095
533c011a 3096 if (PL_op->op_flags & OPf_REF)
146174a9 3097 gv = cGVOP_gv;
fb73857a 3098 else if (isGV(TOPs))
3099 gv = (GV*)POPs;
3100 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3101 gv = (GV*)SvRV(POPs);
a0d0e21e 3102 else
f776e3cd 3103 gv = gv_fetchsv(tmpsv = POPs, 0, SVt_PVIO);
fb73857a 3104
a0d0e21e 3105 if (GvIO(gv) && IoIFP(GvIOp(gv)))
760ac839 3106 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
7a5fd60d 3107 else if (tmpsv && SvOK(tmpsv)) {
349d4f2f 3108 const char *tmps = SvPV_nolen_const(tmpsv);
7a5fd60d
NC		 3109 if (isDIGIT(*tmps))
3110 fd = atoi(tmps);
3111 else
3112 RETPUSHUNDEF;
3113 }
a0d0e21e
LW		 3114 else
3115 RETPUSHUNDEF;
6ad3d225 3116 if (PerlLIO_isatty(fd))
a0d0e21e
LW		 3117 RETPUSHYES;
3118 RETPUSHNO;
3119}
3120
16d20bd9
AD		 3121#if defined(atarist) /* this will work with atariST. Configure will
3122 make guesses for other systems. */
3123# define FILE_base(f) ((f)->_base)
3124# define FILE_ptr(f) ((f)->_ptr)
3125# define FILE_cnt(f) ((f)->_cnt)
3126# define FILE_bufsiz(f) ((f)->_cnt + ((f)->_ptr - (f)->_base))
a0d0e21e
LW		 3127#endif
3128
3129PP(pp_fttext)
3130{
97aff369 3131 dVAR;
39644a26 3132 dSP;
a0d0e21e
LW		 3133 I32 i;
3134 I32 len;
3135 I32 odd = 0;
3136 STDCHAR tbuf[512];
3137 register STDCHAR *s;
3138 register IO *io;
5f05dabc 3139 register SV *sv;
3140 GV *gv;
146174a9 3141 PerlIO *fp;
a0d0e21e 3142
fbb0b3b3
RGS		 3143 STACKED_FTEST_CHECK;
3144
533c011a 3145 if (PL_op->op_flags & OPf_REF)
146174a9 3146 gv = cGVOP_gv;
5f05dabc 3147 else if (isGV(TOPs))
3148 gv = (GV*)POPs;
3149 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3150 gv = (GV*)SvRV(POPs);
3151 else
a0714e2c 3152 gv = NULL;
5f05dabc 3153
3154 if (gv) {
a0d0e21e 3155 EXTEND(SP, 1);
3280af22
NIS		 3156 if (gv == PL_defgv) {
3157 if (PL_statgv)
3158 io = GvIO(PL_statgv);
a0d0e21e 3159 else {
3280af22 3160 sv = PL_statname;
a0d0e21e
LW		 3161 goto really_filename;
3162 }
3163 }
3164 else {
3280af22
NIS		 3165 PL_statgv = gv;
3166 PL_laststatval = -1;
c69006e4 3167 sv_setpvn(PL_statname, "", 0);
3280af22 3168 io = GvIO(PL_statgv);
a0d0e21e
LW		 3169 }
3170 if (io && IoIFP(io)) {
5f05dabc 3171 if (! PerlIO_has_base(IoIFP(io)))
cea2e8a9 3172 DIE(aTHX_ "-T and -B not implemented on filehandles");
3280af22
NIS		 3173 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3174 if (PL_laststatval < 0)
5f05dabc 3175 RETPUSHUNDEF;
9cbac4c7 3176 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
533c011a 3177 if (PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW		 3178 RETPUSHNO;
3179 else
3180 RETPUSHYES;
9cbac4c7 3181 }
a20bf0c3 3182 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
760ac839 3183 i = PerlIO_getc(IoIFP(io));
a0d0e21e 3184 if (i != EOF)
760ac839 3185 (void)PerlIO_ungetc(IoIFP(io),i);
a0d0e21e 3186 }
a20bf0c3 3187 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
a0d0e21e 3188 RETPUSHYES;
a20bf0c3
JH		 3189 len = PerlIO_get_bufsiz(IoIFP(io));
3190 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
760ac839
LW		 3191 /* sfio can have large buffers - limit to 512 */
3192 if (len > 512)
3193 len = 512;
a0d0e21e
LW		 3194 }
3195 else {
2dd78f96 3196 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
146174a9 3197 gv = cGVOP_gv;
2dd78f96 3198 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
146174a9 3199 }
93189314 3200 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW		 3201 RETPUSHUNDEF;
3202 }
3203 }
3204 else {
3205 sv = POPs;
5f05dabc 3206 really_filename:
a0714e2c 3207 PL_statgv = NULL;
5c9aa243 3208 PL_laststype = OP_STAT;
d5263905 3209 sv_setpv(PL_statname, SvPV_nolen_const(sv));
aa07b2f6 3210 if (!(fp = PerlIO_open(SvPVX_const(PL_statname), "r"))) {
349d4f2f
NC		 3211 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname),
3212 '\n'))
9014280d 3213 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
a0d0e21e
LW		 3214 RETPUSHUNDEF;
3215 }
146174a9
CB		 3216 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(fp), &PL_statcache);
3217 if (PL_laststatval < 0) {
3218 (void)PerlIO_close(fp);
5f05dabc 3219 RETPUSHUNDEF;
146174a9 3220 }
bd61b366 3221 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, NULL);
146174a9
CB		 3222 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3223 (void)PerlIO_close(fp);
a0d0e21e 3224 if (len <= 0) {
533c011a 3225 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW		 3226 RETPUSHNO; /* special case NFS directories */
3227 RETPUSHYES; /* null file is anything */
3228 }
3229 s = tbuf;
3230 }
3231
3232 /* now scan s to look for textiness */
4633a7c4 3233 /* XXX ASCII dependent code */
a0d0e21e 3234
146174a9
CB		 3235#if defined(DOSISH) || defined(USEMYBINMODE)
3236 /* ignore trailing ^Z on short files */
3237 if (len && len < sizeof(tbuf) && tbuf[len-1] == 26)
3238 --len;
3239#endif
3240
a0d0e21e
LW		 3241 for (i = 0; i < len; i++, s++) {
3242 if (!*s) { /* null never allowed in text */
3243 odd += len;
3244 break;
3245 }
9d116dd7 3246#ifdef EBCDIC
301e8125 3247 else if (!(isPRINT(*s) || isSPACE(*s)))
9d116dd7
JH		 3248 odd++;
3249#else
146174a9
CB		 3250 else if (*s & 128) {
3251#ifdef USE_LOCALE
2de3dbcc 3252 if (IN_LOCALE_RUNTIME && isALPHA_LC(*s))
b3f66c68
GS		 3253 continue;
3254#endif
3255 /* utf8 characters don't count as odd */
fd400ab9 3256 if (UTF8_IS_START(*s)) {
b3f66c68
GS		 3257 int ulen = UTF8SKIP(s);
3258 if (ulen < len - i) {
3259 int j;
3260 for (j = 1; j < ulen; j++) {
fd400ab9 3261 if (!UTF8_IS_CONTINUATION(s[j]))
b3f66c68
GS		 3262 goto not_utf8;
3263 }
3264 --ulen; /* loop does extra increment */
3265 s += ulen;
3266 i += ulen;
3267 continue;
3268 }
3269 }
3270 not_utf8:
3271 odd++;
146174a9 3272 }
a0d0e21e
LW		 3273 else if (*s < 32 &&
3274 *s != '\n' && *s != '\r' && *s != '\b' &&
3275 *s != '\t' && *s != '\f' && *s != 27)
3276 odd++;
9d116dd7 3277#endif
a0d0e21e
LW		 3278 }
3279
533c011a 3280 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
a0d0e21e
LW		 3281 RETPUSHNO;
3282 else
3283 RETPUSHYES;
3284}
3285
a0d0e21e
LW		 3286/* File calls. */
3287
3288PP(pp_chdir)
3289{
97aff369 3290 dVAR; dSP; dTARGET;
c445ea15 3291 const char *tmps = NULL;
9a957fbc 3292 GV *gv = NULL;
a0d0e21e 3293
c4aca7d0 3294 if( MAXARG == 1 ) {
9a957fbc 3295 SV * const sv = POPs;
d4ac975e
GA		 3296 if (PL_op->op_flags & OPf_SPECIAL) {
3297 gv = gv_fetchsv(sv, 0, SVt_PVIO);
3298 }
3299 else if (SvTYPE(sv) == SVt_PVGV) {
c4aca7d0
GA		 3300 gv = (GV*)sv;
3301 }
3302 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
3303 gv = (GV*)SvRV(sv);
3304 }
3305 else {
3306 tmps = SvPVx_nolen_const(sv);
3307 }
3308 }
35ae6b54 3309
c4aca7d0 3310 if( !gv && (!tmps || !*tmps) ) {
9a957fbc
AL		 3311 HV * const table = GvHVn(PL_envgv);
3312 SV **svp;
3313
a4fc7abc
AL		 3314 if ( (svp = hv_fetchs(table, "HOME", FALSE))
3315 || (svp = hv_fetchs(table, "LOGDIR", FALSE))
491527d0 3316#ifdef VMS
a4fc7abc 3317 || (svp = hv_fetchs(table, "SYS$LOGIN", FALSE))
491527d0 3318#endif
35ae6b54
MS		 3319 )
3320 {
3321 if( MAXARG == 1 )
9014280d 3322 deprecate("chdir('') or chdir(undef) as chdir()");
8c074e2a 3323 tmps = SvPV_nolen_const(*svp);
35ae6b54 3324 }
72f496dc 3325 else {
389ec635 3326 PUSHi(0);
b7ab37f8 3327 TAINT_PROPER("chdir");
389ec635
MS		 3328 RETURN;
3329 }
8ea155d1 3330 }
8ea155d1 3331
a0d0e21e 3332 TAINT_PROPER("chdir");
c4aca7d0
GA		 3333 if (gv) {
3334#ifdef HAS_FCHDIR
9a957fbc 3335 IO* const io = GvIO(gv);
c4aca7d0
GA		 3336 if (io) {
3337 if (IoIFP(io)) {
3338 PUSHi(fchdir(PerlIO_fileno(IoIFP(io))) >= 0);
3339 }
3340 else if (IoDIRP(io)) {
3341#ifdef HAS_DIRFD
3342 PUSHi(fchdir(dirfd(IoDIRP(io))) >= 0);
3343#else
0f1f2428 3344 DIE(aTHX_ PL_no_func, "dirfd");
c4aca7d0
GA		 3345#endif
3346 }
3347 else {
4dc171f0
PD		 3348 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
3349 report_evil_fh(gv, io, PL_op->op_type);
3350 SETERRNO(EBADF, RMS_IFI);
c4aca7d0
GA		 3351 PUSHi(0);
3352 }
3353 }
3354 else {
4dc171f0
PD		 3355 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
3356 report_evil_fh(gv, io, PL_op->op_type);
3357 SETERRNO(EBADF,RMS_IFI);
c4aca7d0
GA		 3358 PUSHi(0);
3359 }
3360#else
3361 DIE(aTHX_ PL_no_func, "fchdir");
3362#endif
3363 }
3364 else
b8ffc8df 3365 PUSHi( PerlDir_chdir(tmps) >= 0 );
748a9306
LW		 3366#ifdef VMS
3367 /* Clear the DEFAULT element of ENV so we'll get the new value
3368 * in the future. */
6b88bc9c 3369 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
748a9306 3370#endif
a0d0e21e
LW		 3371 RETURN;
3372}
3373
3374PP(pp_chown)
3375{
97aff369 3376 dVAR; dSP; dMARK; dTARGET;
605b9385 3377 const I32 value = (I32)apply(PL_op->op_type, MARK, SP);
76ffd3b9 3378
a0d0e21e 3379 SP = MARK;
b59aed67 3380 XPUSHi(value);
a0d0e21e 3381 RETURN;
a0d0e21e
LW		 3382}
3383
3384PP(pp_chroot)
3385{
a0d0e21e 3386#ifdef HAS_CHROOT
97aff369 3387 dVAR; dSP; dTARGET;
7452cf6a 3388 char * const tmps = POPpx;
a0d0e21e
LW		 3389 TAINT_PROPER("chroot");
3390 PUSHi( chroot(tmps) >= 0 );
3391 RETURN;
3392#else
cea2e8a9 3393 DIE(aTHX_ PL_no_func, "chroot");
a0d0e21e
LW		 3394#endif
3395}
3396
a0d0e21e
LW		 3397PP(pp_rename)
3398{
97aff369 3399 dVAR; dSP; dTARGET;
a0d0e21e 3400 int anum;
7452cf6a
AL		 3401 const char * const tmps2 = POPpconstx;
3402 const char * const tmps = SvPV_nolen_const(TOPs);
a0d0e21e
LW		 3403 TAINT_PROPER("rename");
3404#ifdef HAS_RENAME
baed7233 3405 anum = PerlLIO_rename(tmps, tmps2);
a0d0e21e 3406#else
6b88bc9c 3407 if (!(anum = PerlLIO_stat(tmps, &PL_statbuf))) {
ed969818
W		 3408 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3409 anum = 1;
3410 else {
3654eb6c 3411 if (PL_euid || PerlLIO_stat(tmps2, &PL_statbuf) < 0 || !S_ISDIR(PL_statbuf.st_mode))
ed969818
W		 3412 (void)UNLINK(tmps2);
3413 if (!(anum = link(tmps, tmps2)))
3414 anum = UNLINK(tmps);
3415 }
a0d0e21e
LW		 3416 }
3417#endif
3418 SETi( anum >= 0 );
3419 RETURN;
3420}
3421
ce6987d0 3422#if defined(HAS_LINK) || defined(HAS_SYMLINK)
a0d0e21e
LW		 3423PP(pp_link)
3424{
97aff369 3425 dVAR; dSP; dTARGET;
ce6987d0
NC		 3426 const int op_type = PL_op->op_type;
3427 int result;
a0d0e21e 3428
ce6987d0
NC		 3429# ifndef HAS_LINK
3430 if (op_type == OP_LINK)
3431 DIE(aTHX_ PL_no_func, "link");
3432# endif
3433# ifndef HAS_SYMLINK
3434 if (op_type == OP_SYMLINK)
3435 DIE(aTHX_ PL_no_func, "symlink");
3436# endif
3437
3438 {
7452cf6a
AL		 3439 const char * const tmps2 = POPpconstx;
3440 const char * const tmps = SvPV_nolen_const(TOPs);
ce6987d0
NC		 3441 TAINT_PROPER(PL_op_desc[op_type]);
3442 result =
3443# if defined(HAS_LINK)
3444# if defined(HAS_SYMLINK)
3445 /* Both present - need to choose which. */
3446 (op_type == OP_LINK) ?
3447 PerlLIO_link(tmps, tmps2) : symlink(tmps, tmps2);
3448# else
4a8ebb7f
SH		 3449 /* Only have link, so calls to pp_symlink will have DIE()d above. */
3450 PerlLIO_link(tmps, tmps2);
ce6987d0
NC		 3451# endif
3452# else
3453# if defined(HAS_SYMLINK)
4a8ebb7f
SH		 3454 /* Only have symlink, so calls to pp_link will have DIE()d above. */
3455 symlink(tmps, tmps2);
ce6987d0
NC		 3456# endif
3457# endif
3458 }
3459
3460 SETi( result >= 0 );
a0d0e21e 3461 RETURN;
ce6987d0 3462}