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[perl5.git] / pp_sys.c
CommitLineData
a0d0e21e
LW
1/* pp_sys.c
2 *
fdf8c088 3 * Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
1129b882 4 * 2004, 2005, 2006, 2007, 2008 by Larry Wall and others
a0d0e21e
LW
5 *
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
8 *
9 */
10
11/*
12 * But only a short way ahead its floor and the walls on either side were
13 * cloven by a great fissure, out of which the red glare came, now leaping
14 * up, now dying down into darkness; and all the while far below there was
15 * a rumour and a trouble as of great engines throbbing and labouring.
4ac71550
TC
16 *
17 * [p.945 of _The Lord of the Rings_, VI/iii: "Mount Doom"]
a0d0e21e
LW
18 */
19
166f8a29
DM
20/* This file contains system pp ("push/pop") functions that
21 * execute the opcodes that make up a perl program. A typical pp function
22 * expects to find its arguments on the stack, and usually pushes its
23 * results onto the stack, hence the 'pp' terminology. Each OP structure
24 * contains a pointer to the relevant pp_foo() function.
25 *
26 * By 'system', we mean ops which interact with the OS, such as pp_open().
27 */
28
a0d0e21e 29#include "EXTERN.h"
864dbfa3 30#define PERL_IN_PP_SYS_C
a0d0e21e 31#include "perl.h"
d95a2ea5
CB
32#include "time64.h"
33#include "time64.c"
a0d0e21e 34
f1066039
JH
35#ifdef I_SHADOW
36/* Shadow password support for solaris - pdo@cs.umd.edu
37 * Not just Solaris: at least HP-UX, IRIX, Linux.
3813c136
JH
38 * The API is from SysV.
39 *
40 * There are at least two more shadow interfaces,
41 * see the comments in pp_gpwent().
42 *
43 * --jhi */
44# ifdef __hpux__
c529f79d 45/* There is a MAXINT coming from <shadow.h> <- <hpsecurity.h> <- <values.h>
301e8125 46 * and another MAXINT from "perl.h" <- <sys/param.h>. */
3813c136
JH
47# undef MAXINT
48# endif
49# include <shadow.h>
8c0bfa08
PB
50#endif
51
76c32331
PP
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
PP
111# include <sys/utime.h>
112# else
113# include <utime.h>
114# endif
a0d0e21e 115#endif
a0d0e21e 116
cbdc8872 117#ifdef HAS_CHSIZE
cd52b7b2
PP
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
PP
128#endif
129
ff68c719
PP
130#ifdef HAS_FLOCK
131# define FLOCK flock
132#else /* no flock() */
133
36477c24
PP
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
PP
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
PP
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
GS
201
202/* F_OK unused: if stat() cannot find it... */
203
d7558cad 204#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
c955f117 205 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
d7558cad 206# define PERL_EFF_ACCESS(p,f) (access((p), (f) | EFF_ONLY_OK))
5ff3f7a4
GS
207#endif
208
d7558cad 209#if !defined(PERL_EFF_ACCESS) && defined(HAS_EACCESS)
3813c136 210# ifdef I_SYS_SECURITY
5ff3f7a4
GS
211# include <sys/security.h>
212# endif
c955f117
JH
213# ifdef ACC_SELF
214 /* HP SecureWare */
d7558cad 215# define PERL_EFF_ACCESS(p,f) (eaccess((p), (f), ACC_SELF))
c955f117
JH
216# else
217 /* SCO */
d7558cad 218# define PERL_EFF_ACCESS(p,f) (eaccess((p), (f)))
c955f117 219# endif
5ff3f7a4
GS
220#endif
221
d7558cad 222#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESSX) && defined(ACC_SELF)
c955f117 223 /* AIX */
d7558cad 224# define PERL_EFF_ACCESS(p,f) (accessx((p), (f), ACC_SELF))
5ff3f7a4
GS
225#endif
226
d7558cad
NC
227
228#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) \
327c3667
GS
229 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
230 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
5ff3f7a4 231/* The Hard Way. */
327c3667 232STATIC int
7f4774ae 233S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
ba106d47 234{
c4420975
AL
235 const Uid_t ruid = getuid();
236 const Uid_t euid = geteuid();
237 const Gid_t rgid = getgid();
238 const Gid_t egid = getegid();
5ff3f7a4
GS
239 int res;
240
5ff3f7a4 241#if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
cea2e8a9 242 Perl_croak(aTHX_ "switching effective uid is not implemented");
5ff3f7a4
GS
243#else
244#ifdef HAS_SETREUID
245 if (setreuid(euid, ruid))
246#else
247#ifdef HAS_SETRESUID
248 if (setresuid(euid, ruid, (Uid_t)-1))
249#endif
250#endif
dcbac5bb 251 /* diag_listed_as: entering effective %s failed */
cea2e8a9 252 Perl_croak(aTHX_ "entering effective uid failed");
5ff3f7a4
GS
253#endif
254
255#if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
cea2e8a9 256 Perl_croak(aTHX_ "switching effective gid is not implemented");
5ff3f7a4
GS
257#else
258#ifdef HAS_SETREGID
259 if (setregid(egid, rgid))
260#else
261#ifdef HAS_SETRESGID
262 if (setresgid(egid, rgid, (Gid_t)-1))
263#endif
264#endif
dcbac5bb 265 /* diag_listed_as: entering effective %s failed */
cea2e8a9 266 Perl_croak(aTHX_ "entering effective gid failed");
5ff3f7a4
GS
267#endif
268
269 res = access(path, mode);
270
271#ifdef HAS_SETREUID
272 if (setreuid(ruid, euid))
273#else
274#ifdef HAS_SETRESUID
275 if (setresuid(ruid, euid, (Uid_t)-1))
276#endif
277#endif
dcbac5bb 278 /* diag_listed_as: leaving effective %s failed */
cea2e8a9 279 Perl_croak(aTHX_ "leaving effective uid failed");
5ff3f7a4
GS
280
281#ifdef HAS_SETREGID
282 if (setregid(rgid, egid))
283#else
284#ifdef HAS_SETRESGID
285 if (setresgid(rgid, egid, (Gid_t)-1))
286#endif
287#endif
dcbac5bb 288 /* diag_listed_as: leaving effective %s failed */
cea2e8a9 289 Perl_croak(aTHX_ "leaving effective gid failed");
5ff3f7a4
GS
290
291 return res;
292}
d6864606 293# define PERL_EFF_ACCESS(p,f) (S_emulate_eaccess(aTHX_ (p), (f)))
5ff3f7a4
GS
294#endif
295
a0d0e21e
LW
296PP(pp_backtick)
297{
97aff369 298 dVAR; dSP; dTARGET;
760ac839 299 PerlIO *fp;
1b6737cc 300 const char * const tmps = POPpconstx;
f54cb97a 301 const I32 gimme = GIMME_V;
e1ec3a88 302 const char *mode = "r";
54310121 303
a0d0e21e 304 TAINT_PROPER("``");
16fe6d59
GS
305 if (PL_op->op_private & OPpOPEN_IN_RAW)
306 mode = "rb";
307 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
308 mode = "rt";
2fbb330f 309 fp = PerlProc_popen(tmps, mode);
a0d0e21e 310 if (fp) {
11bcd5da 311 const char * const type = Perl_PerlIO_context_layers(aTHX_ NULL);
ac27b0f5
NIS
312 if (type && *type)
313 PerlIO_apply_layers(aTHX_ fp,mode,type);
314
54310121 315 if (gimme == G_VOID) {
96827780
MB
316 char tmpbuf[256];
317 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
a79db61d 318 NOOP;
54310121
PP
319 }
320 else if (gimme == G_SCALAR) {
d343c3ef 321 ENTER_with_name("backtick");
75af1a9c 322 SAVESPTR(PL_rs);
fa326138 323 PL_rs = &PL_sv_undef;
76f68e9b 324 sv_setpvs(TARG, ""); /* note that this preserves previous buffer */
bd61b366 325 while (sv_gets(TARG, fp, SvCUR(TARG)) != NULL)
a79db61d 326 NOOP;
d343c3ef 327 LEAVE_with_name("backtick");
a0d0e21e 328 XPUSHs(TARG);
aa689395 329 SvTAINTED_on(TARG);
a0d0e21e
LW
330 }
331 else {
a0d0e21e 332 for (;;) {
561b68a9 333 SV * const sv = newSV(79);
bd61b366 334 if (sv_gets(sv, fp, 0) == NULL) {
a0d0e21e
LW
335 SvREFCNT_dec(sv);
336 break;
337 }
6e449a3a 338 mXPUSHs(sv);
a0d0e21e 339 if (SvLEN(sv) - SvCUR(sv) > 20) {
1da4ca5f 340 SvPV_shrink_to_cur(sv);
a0d0e21e 341 }
aa689395 342 SvTAINTED_on(sv);
a0d0e21e
LW
343 }
344 }
2fbb330f 345 STATUS_NATIVE_CHILD_SET(PerlProc_pclose(fp));
aa689395 346 TAINT; /* "I believe that this is not gratuitous!" */
a0d0e21e
LW
347 }
348 else {
37038d91 349 STATUS_NATIVE_CHILD_SET(-1);
54310121 350 if (gimme == G_SCALAR)
a0d0e21e
LW
351 RETPUSHUNDEF;
352 }
353
354 RETURN;
355}
356
357PP(pp_glob)
358{
27da23d5 359 dVAR;
a0d0e21e 360 OP *result;
9426e1a5 361 dSP;
151cea25
FC
362 /* make a copy of the pattern if it is gmagical, to ensure that magic
363 * is called once and only once */
364 if (SvGMAGICAL(TOPm1s)) TOPm1s = sv_2mortal(newSVsv(TOPm1s));
9426e1a5 365
67288365 366 tryAMAGICunTARGETlist(iter_amg, -1, (PL_op->op_flags & OPf_SPECIAL));
d1bea3d8
DM
367
368 if (PL_op->op_flags & OPf_SPECIAL) {
369 /* call Perl-level glob function instead. Stack args are:
370 * MARK, wildcard, csh_glob context index
371 * and following OPs should be: gv(CORE::GLOBAL::glob), entersub
372 * */
373 return NORMAL;
374 }
375 /* stack args are: wildcard, gv(_GEN_n) */
376
d67594ff
FC
377 if (PL_globhook) {
378 SETs(GvSV(TOPs));
379 PL_globhook(aTHX);
380 return NORMAL;
381 }
f5284f61 382
71686f12
GS
383 /* Note that we only ever get here if File::Glob fails to load
384 * without at the same time croaking, for some reason, or if
385 * perl was built with PERL_EXTERNAL_GLOB */
386
d343c3ef 387 ENTER_with_name("glob");
a0d0e21e 388
c90c0ff4 389#ifndef VMS
284167a5 390 if (TAINTING_get) {
7bac28a0
PP
391 /*
392 * The external globbing program may use things we can't control,
393 * so for security reasons we must assume the worst.
394 */
395 TAINT;
22c35a8c 396 taint_proper(PL_no_security, "glob");
7bac28a0 397 }
c90c0ff4 398#endif /* !VMS */
7bac28a0 399
3280af22 400 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
159b6efe 401 PL_last_in_gv = MUTABLE_GV(*PL_stack_sp--);
a0d0e21e 402
3280af22 403 SAVESPTR(PL_rs); /* This is not permanent, either. */
84bafc02 404 PL_rs = newSVpvs_flags("\000", SVs_TEMP);
c07a80fd
PP
405#ifndef DOSISH
406#ifndef CSH
6b88bc9c 407 *SvPVX(PL_rs) = '\n';
a0d0e21e 408#endif /* !CSH */
55497cff 409#endif /* !DOSISH */
c07a80fd 410
a0d0e21e 411 result = do_readline();
d343c3ef 412 LEAVE_with_name("glob");
a0d0e21e
LW
413 return result;
414}
415
a0d0e21e
LW
416PP(pp_rcatline)
417{
97aff369 418 dVAR;
146174a9 419 PL_last_in_gv = cGVOP_gv;
a0d0e21e
LW
420 return do_readline();
421}
422
423PP(pp_warn)
424{
97aff369 425 dVAR; dSP; dMARK;
c5df3096 426 SV *exsv;
06bf62c7 427 STRLEN len;
b59aed67 428 if (SP - MARK > 1) {
a0d0e21e 429 dTARGET;
3280af22 430 do_join(TARG, &PL_sv_no, MARK, SP);
c5df3096 431 exsv = TARG;
a0d0e21e
LW
432 SP = MARK + 1;
433 }
b59aed67 434 else if (SP == MARK) {
c5df3096 435 exsv = &PL_sv_no;
b59aed67 436 EXTEND(SP, 1);
83f957ec 437 SP = MARK + 1;
b59aed67 438 }
a0d0e21e 439 else {
c5df3096 440 exsv = TOPs;
ef5fe392 441 if (SvGMAGICAL(exsv)) exsv = sv_mortalcopy(exsv);
a0d0e21e 442 }
06bf62c7 443
72d74926 444 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
c5df3096
Z
445 /* well-formed exception supplied */
446 }
c5df3096 447 else {
ef5fe392
FC
448 SvGETMAGIC(ERRSV);
449 if (SvROK(ERRSV)) {
450 if (SvGMAGICAL(ERRSV)) {
451 exsv = sv_newmortal();
452 sv_setsv_nomg(exsv, ERRSV);
453 }
454 else exsv = ERRSV;
455 }
b1d0a833 456 else if (SvPOKp(ERRSV) ? SvCUR(ERRSV) : SvNIOKp(ERRSV)) {
ef5fe392
FC
457 exsv = sv_newmortal();
458 sv_setsv_nomg(exsv, ERRSV);
459 sv_catpvs(exsv, "\t...caught");
460 }
461 else {
c5df3096 462 exsv = newSVpvs_flags("Warning: something's wrong", SVs_TEMP);
ef5fe392 463 }
c5df3096 464 }
3b7f69a5
FC
465 if (SvROK(exsv) && !PL_warnhook)
466 Perl_warn(aTHX_ "%"SVf, SVfARG(exsv));
467 else warn_sv(exsv);
a0d0e21e
LW
468 RETSETYES;
469}
470
471PP(pp_die)
472{
97aff369 473 dVAR; dSP; dMARK;
c5df3096 474 SV *exsv;
06bf62c7 475 STRLEN len;
96e176bf
CL
476#ifdef VMS
477 VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
478#endif
a0d0e21e
LW
479 if (SP - MARK != 1) {
480 dTARGET;
3280af22 481 do_join(TARG, &PL_sv_no, MARK, SP);
c5df3096 482 exsv = TARG;
a0d0e21e
LW
483 SP = MARK + 1;
484 }
485 else {
c5df3096 486 exsv = TOPs;
a0d0e21e 487 }
c5df3096 488
72d74926 489 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
c5df3096
Z
490 /* well-formed exception supplied */
491 }
492 else if (SvROK(ERRSV)) {
493 exsv = ERRSV;
494 if (sv_isobject(exsv)) {
495 HV * const stash = SvSTASH(SvRV(exsv));
496 GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
497 if (gv) {
498 SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
499 SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
500 EXTEND(SP, 3);
501 PUSHMARK(SP);
502 PUSHs(exsv);
503 PUSHs(file);
504 PUSHs(line);
505 PUTBACK;
506 call_sv(MUTABLE_SV(GvCV(gv)),
507 G_SCALAR|G_EVAL|G_KEEPERR);
508 exsv = sv_mortalcopy(*PL_stack_sp--);
05423cc9 509 }
4e6ea2c3 510 }
a0d0e21e 511 }
05a1a014 512 else if (SvPV_const(ERRSV, len), len) {
c5df3096
Z
513 exsv = sv_mortalcopy(ERRSV);
514 sv_catpvs(exsv, "\t...propagated");
515 }
516 else {
517 exsv = newSVpvs_flags("Died", SVs_TEMP);
518 }
9fed9930 519 return die_sv(exsv);
a0d0e21e
LW
520}
521
522/* I/O. */
523
d682515d
NC
524OP *
525Perl_tied_method(pTHX_ const char *const methname, SV **sp, SV *const sv,
526 const MAGIC *const mg, const U32 flags, U32 argc, ...)
6bcca55b 527{
d8ef3a16
DM
528 SV **orig_sp = sp;
529 I32 ret_args;
530
d682515d 531 PERL_ARGS_ASSERT_TIED_METHOD;
6bcca55b
NC
532
533 /* Ensure that our flag bits do not overlap. */
d682515d
NC
534 assert((TIED_METHOD_MORTALIZE_NOT_NEEDED & G_WANT) == 0);
535 assert((TIED_METHOD_ARGUMENTS_ON_STACK & G_WANT) == 0);
94bc412f 536 assert((TIED_METHOD_SAY & G_WANT) == 0);
6bcca55b 537
d8ef3a16
DM
538 PUTBACK; /* sp is at *foot* of args, so this pops args from old stack */
539 PUSHSTACKi(PERLSI_MAGIC);
540 EXTEND(SP, argc+1); /* object + args */
6bcca55b 541 PUSHMARK(sp);
d682515d 542 PUSHs(SvTIED_obj(sv, mg));
d8ef3a16
DM
543 if (flags & TIED_METHOD_ARGUMENTS_ON_STACK) {
544 Copy(orig_sp + 2, sp + 1, argc, SV*); /* copy args to new stack */
1a8c1d59 545 sp += argc;
d8ef3a16 546 }
1a8c1d59 547 else if (argc) {
d682515d
NC
548 const U32 mortalize_not_needed
549 = flags & TIED_METHOD_MORTALIZE_NOT_NEEDED;
6bcca55b 550 va_list args;
0d5509eb 551 va_start(args, argc);
6bcca55b
NC
552 do {
553 SV *const arg = va_arg(args, SV *);
554 if(mortalize_not_needed)
555 PUSHs(arg);
556 else
557 mPUSHs(arg);
558 } while (--argc);
559 va_end(args);
560 }
561
562 PUTBACK;
d682515d 563 ENTER_with_name("call_tied_method");
94bc412f
NC
564 if (flags & TIED_METHOD_SAY) {
565 /* local $\ = "\n" */
566 SAVEGENERICSV(PL_ors_sv);
567 PL_ors_sv = newSVpvs("\n");
568 }
d8ef3a16
DM
569 ret_args = call_method(methname, flags & G_WANT);
570 SPAGAIN;
571 orig_sp = sp;
572 POPSTACK;
573 SPAGAIN;
574 if (ret_args) { /* copy results back to original stack */
575 EXTEND(sp, ret_args);
576 Copy(orig_sp - ret_args + 1, sp + 1, ret_args, SV*);
577 sp += ret_args;
578 PUTBACK;
579 }
d682515d 580 LEAVE_with_name("call_tied_method");
6bcca55b
NC
581 return NORMAL;
582}
583
d682515d
NC
584#define tied_method0(a,b,c,d) \
585 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,0)
586#define tied_method1(a,b,c,d,e) \
587 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,1,e)
588#define tied_method2(a,b,c,d,e,f) \
589 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,2,e,f)
6bcca55b 590
a0d0e21e
LW
591PP(pp_open)
592{
27da23d5 593 dVAR; dSP;
a567e93b
NIS
594 dMARK; dORIGMARK;
595 dTARGET;
a0d0e21e 596 SV *sv;
5b468f54 597 IO *io;
5c144d81 598 const char *tmps;
a0d0e21e 599 STRLEN len;
a567e93b 600 bool ok;
a0d0e21e 601
159b6efe 602 GV * const gv = MUTABLE_GV(*++MARK);
c4420975 603
13be902c 604 if (!isGV(gv) && !(SvTYPE(gv) == SVt_PVLV && isGV_with_GP(gv)))
cea2e8a9 605 DIE(aTHX_ PL_no_usym, "filehandle");
abc718f2 606
a79db61d 607 if ((io = GvIOp(gv))) {
a5e1d062 608 const MAGIC *mg;
36477c24 609 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
853846ea 610
a2a5de95 611 if (IoDIRP(io))
d1d15184 612 Perl_ck_warner_d(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
d0c0e7dd
FC
613 "Opening dirhandle %"HEKf" also as a file",
614 HEKfARG(GvENAME_HEK(gv)));
abc718f2 615
ad64d0ec 616 mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
c4420975
AL
617 if (mg) {
618 /* Method's args are same as ours ... */
619 /* ... except handle is replaced by the object */
d682515d
NC
620 return Perl_tied_method(aTHX_ "OPEN", mark - 1, MUTABLE_SV(io), mg,
621 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
622 sp - mark);
c4420975 623 }
4592e6ca
NIS
624 }
625
a567e93b
NIS
626 if (MARK < SP) {
627 sv = *++MARK;
628 }
629 else {
35a08ec7 630 sv = GvSVn(gv);
a567e93b
NIS
631 }
632
5c144d81 633 tmps = SvPV_const(sv, len);
4608196e 634 ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, NULL, MARK+1, (SP-MARK));
a567e93b
NIS
635 SP = ORIGMARK;
636 if (ok)
3280af22
NIS
637 PUSHi( (I32)PL_forkprocess );
638 else if (PL_forkprocess == 0) /* we are a new child */
a0d0e21e
LW
639 PUSHi(0);
640 else
641 RETPUSHUNDEF;
642 RETURN;
643}
644
645PP(pp_close)
646{
27da23d5 647 dVAR; dSP;
30901a8a
FC
648 GV * const gv =
649 MAXARG == 0 || (!TOPs && !POPs) ? PL_defoutgv : MUTABLE_GV(POPs);
1d603a67 650
2addaaf3
NC
651 if (MAXARG == 0)
652 EXTEND(SP, 1);
653
a79db61d
AL
654 if (gv) {
655 IO * const io = GvIO(gv);
656 if (io) {
a5e1d062 657 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 658 if (mg) {
d682515d 659 return tied_method0("CLOSE", SP, MUTABLE_SV(io), mg);
a79db61d
AL
660 }
661 }
1d603a67 662 }
54310121 663 PUSHs(boolSV(do_close(gv, TRUE)));
a0d0e21e
LW
664 RETURN;
665}
666
667PP(pp_pipe_op)
668{
a0d0e21e 669#ifdef HAS_PIPE
97aff369 670 dVAR;
9cad6237 671 dSP;
eb578fdb
KW
672 IO *rstio;
673 IO *wstio;
a0d0e21e
LW
674 int fd[2];
675
159b6efe
NC
676 GV * const wgv = MUTABLE_GV(POPs);
677 GV * const rgv = MUTABLE_GV(POPs);
a0d0e21e
LW
678
679 if (!rgv || !wgv)
680 goto badexit;
681
6e592b3a 682 if (!isGV_with_GP(rgv) || !isGV_with_GP(wgv))
cea2e8a9 683 DIE(aTHX_ PL_no_usym, "filehandle");
a0d0e21e
LW
684 rstio = GvIOn(rgv);
685 wstio = GvIOn(wgv);
686
687 if (IoIFP(rstio))
688 do_close(rgv, FALSE);
689 if (IoIFP(wstio))
690 do_close(wgv, FALSE);
691
6ad3d225 692 if (PerlProc_pipe(fd) < 0)
a0d0e21e
LW
693 goto badexit;
694
460c8493
IZ
695 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
696 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
b5ac89c3 697 IoOFP(rstio) = IoIFP(rstio);
a0d0e21e 698 IoIFP(wstio) = IoOFP(wstio);
50952442
JH
699 IoTYPE(rstio) = IoTYPE_RDONLY;
700 IoTYPE(wstio) = IoTYPE_WRONLY;
a0d0e21e
LW
701
702 if (!IoIFP(rstio) || !IoOFP(wstio)) {
a79db61d
AL
703 if (IoIFP(rstio))
704 PerlIO_close(IoIFP(rstio));
705 else
706 PerlLIO_close(fd[0]);
707 if (IoOFP(wstio))
708 PerlIO_close(IoOFP(wstio));
709 else
710 PerlLIO_close(fd[1]);
a0d0e21e
LW
711 goto badexit;
712 }
4771b018
GS
713#if defined(HAS_FCNTL) && defined(F_SETFD)
714 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
715 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
716#endif
a0d0e21e
LW
717 RETPUSHYES;
718
719badexit:
720 RETPUSHUNDEF;
721#else
cea2e8a9 722 DIE(aTHX_ PL_no_func, "pipe");
a0d0e21e
LW
723#endif
724}
725
726PP(pp_fileno)
727{
27da23d5 728 dVAR; dSP; dTARGET;
a0d0e21e
LW
729 GV *gv;
730 IO *io;
760ac839 731 PerlIO *fp;
a5e1d062 732 const MAGIC *mg;
4592e6ca 733
a0d0e21e
LW
734 if (MAXARG < 1)
735 RETPUSHUNDEF;
159b6efe 736 gv = MUTABLE_GV(POPs);
9c9f25b8 737 io = GvIO(gv);
4592e6ca 738
9c9f25b8 739 if (io
ad64d0ec 740 && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar)))
5b468f54 741 {
d682515d 742 return tied_method0("FILENO", SP, MUTABLE_SV(io), mg);
4592e6ca
NIS
743 }
744
9c9f25b8 745 if (!io || !(fp = IoIFP(io))) {
c289d2f7
JH
746 /* Can't do this because people seem to do things like
747 defined(fileno($foo)) to check whether $foo is a valid fh.
51087808
NC
748
749 report_evil_fh(gv);
c289d2f7 750 */
a0d0e21e 751 RETPUSHUNDEF;
c289d2f7
JH
752 }
753
760ac839 754 PUSHi(PerlIO_fileno(fp));
a0d0e21e
LW
755 RETURN;
756}
757
758PP(pp_umask)
759{
97aff369 760 dVAR;
27da23d5 761 dSP;
d7e492a4 762#ifdef HAS_UMASK
27da23d5 763 dTARGET;
761237fe 764 Mode_t anum;
a0d0e21e 765
58536d15 766 if (MAXARG < 1 || (!TOPs && !POPs)) {
b0b546b3
GA
767 anum = PerlLIO_umask(022);
768 /* setting it to 022 between the two calls to umask avoids
769 * to have a window where the umask is set to 0 -- meaning
770 * that another thread could create world-writeable files. */
771 if (anum != 022)
772 (void)PerlLIO_umask(anum);
a0d0e21e
LW
773 }
774 else
6ad3d225 775 anum = PerlLIO_umask(POPi);
a0d0e21e
LW
776 TAINT_PROPER("umask");
777 XPUSHi(anum);
778#else
a0288114 779 /* Only DIE if trying to restrict permissions on "user" (self).
eec2d3df
GS
780 * Otherwise it's harmless and more useful to just return undef
781 * since 'group' and 'other' concepts probably don't exist here. */
58536d15 782 if (MAXARG >= 1 && (TOPs||POPs) && (POPi & 0700))
cea2e8a9 783 DIE(aTHX_ "umask not implemented");
6b88bc9c 784 XPUSHs(&PL_sv_undef);
a0d0e21e
LW
785#endif
786 RETURN;
787}
788
789PP(pp_binmode)
790{
27da23d5 791 dVAR; dSP;
a0d0e21e
LW
792 GV *gv;
793 IO *io;
760ac839 794 PerlIO *fp;
a0714e2c 795 SV *discp = NULL;
a0d0e21e
LW
796
797 if (MAXARG < 1)
798 RETPUSHUNDEF;
60382766 799 if (MAXARG > 1) {
16fe6d59 800 discp = POPs;
60382766 801 }
a0d0e21e 802
159b6efe 803 gv = MUTABLE_GV(POPs);
9c9f25b8 804 io = GvIO(gv);
4592e6ca 805
9c9f25b8 806 if (io) {
a5e1d062 807 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 808 if (mg) {
bc0c81ca
NC
809 /* This takes advantage of the implementation of the varargs
810 function, which I don't think that the optimiser will be able to
811 figure out. Although, as it's a static function, in theory it
812 could. */
d682515d
NC
813 return Perl_tied_method(aTHX_ "BINMODE", SP, MUTABLE_SV(io), mg,
814 G_SCALAR|TIED_METHOD_MORTALIZE_NOT_NEEDED,
815 discp ? 1 : 0, discp);
a79db61d 816 }
4592e6ca 817 }
a0d0e21e 818
9c9f25b8 819 if (!io || !(fp = IoIFP(io))) {
51087808 820 report_evil_fh(gv);
b5fe5ca2 821 SETERRNO(EBADF,RMS_IFI);
50f846a7
SC
822 RETPUSHUNDEF;
823 }
a0d0e21e 824
40d98b49 825 PUTBACK;
f0a78170 826 {
a79b25b7
VP
827 STRLEN len = 0;
828 const char *d = NULL;
829 int mode;
830 if (discp)
831 d = SvPV_const(discp, len);
832 mode = mode_from_discipline(d, len);
f0a78170
NC
833 if (PerlIO_binmode(aTHX_ fp, IoTYPE(io), mode, d)) {
834 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
835 if (!PerlIO_binmode(aTHX_ IoOFP(io), IoTYPE(io), mode, d)) {
836 SPAGAIN;
837 RETPUSHUNDEF;
838 }
839 }
840 SPAGAIN;
841 RETPUSHYES;
842 }
843 else {
844 SPAGAIN;
845 RETPUSHUNDEF;
38af81ff 846 }
40d98b49 847 }
a0d0e21e
LW
848}
849
850PP(pp_tie)
851{
27da23d5 852 dVAR; dSP; dMARK;
a0d0e21e 853 HV* stash;
07822e36 854 GV *gv = NULL;
a0d0e21e 855 SV *sv;
1df70142 856 const I32 markoff = MARK - PL_stack_base;
e1ec3a88 857 const char *methname;
14befaf4 858 int how = PERL_MAGIC_tied;
e336de0d 859 U32 items;
c4420975 860 SV *varsv = *++MARK;
a0d0e21e 861
6b05c17a
NIS
862 switch(SvTYPE(varsv)) {
863 case SVt_PVHV:
aec0c0cc
FC
864 {
865 HE *entry;
6b05c17a 866 methname = "TIEHASH";
aec0c0cc
FC
867 if (HvLAZYDEL(varsv) && (entry = HvEITER((HV *)varsv))) {
868 HvLAZYDEL_off(varsv);
869 hv_free_ent((HV *)varsv, entry);
870 }
85fbaab2 871 HvEITER_set(MUTABLE_HV(varsv), 0);
6b05c17a 872 break;
aec0c0cc 873 }
6b05c17a
NIS
874 case SVt_PVAV:
875 methname = "TIEARRAY";
ce65bc73
FC
876 if (!AvREAL(varsv)) {
877 if (!AvREIFY(varsv))
878 Perl_croak(aTHX_ "Cannot tie unreifiable array");
879 av_clear((AV *)varsv);
880 AvREIFY_off(varsv);
881 AvREAL_on(varsv);
882 }
6b05c17a
NIS
883 break;
884 case SVt_PVGV:
13be902c 885 case SVt_PVLV:
8bb5f786 886 if (isGV_with_GP(varsv) && !SvFAKE(varsv)) {
6e592b3a
BM
887 methname = "TIEHANDLE";
888 how = PERL_MAGIC_tiedscalar;
889 /* For tied filehandles, we apply tiedscalar magic to the IO
890 slot of the GP rather than the GV itself. AMS 20010812 */
891 if (!GvIOp(varsv))
892 GvIOp(varsv) = newIO();
ad64d0ec 893 varsv = MUTABLE_SV(GvIOp(varsv));
6e592b3a
BM
894 break;
895 }
896 /* FALL THROUGH */
6b05c17a
NIS
897 default:
898 methname = "TIESCALAR";
14befaf4 899 how = PERL_MAGIC_tiedscalar;
6b05c17a
NIS
900 break;
901 }
e336de0d 902 items = SP - MARK++;
a91d1d42 903 if (sv_isobject(*MARK)) { /* Calls GET magic. */
d343c3ef 904 ENTER_with_name("call_TIE");
e788e7d3 905 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 906 PUSHMARK(SP);
eb160463 907 EXTEND(SP,(I32)items);
e336de0d
GS
908 while (items--)
909 PUSHs(*MARK++);
910 PUTBACK;
864dbfa3 911 call_method(methname, G_SCALAR);
301e8125 912 }
6b05c17a 913 else {
086d2913
NC
914 /* Can't use call_method here, else this: fileno FOO; tie @a, "FOO"
915 * will attempt to invoke IO::File::TIEARRAY, with (best case) the
916 * wrong error message, and worse case, supreme action at a distance.
917 * (Sorry obfuscation writers. You're not going to be given this one.)
6b05c17a 918 */
4886938f
BF
919 stash = gv_stashsv(*MARK, 0);
920 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
35c1215d 921 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
a91d1d42 922 methname, SVfARG(SvOK(*MARK) ? *MARK : &PL_sv_no));
6b05c17a 923 }
d343c3ef 924 ENTER_with_name("call_TIE");
e788e7d3 925 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 926 PUSHMARK(SP);
eb160463 927 EXTEND(SP,(I32)items);
e336de0d
GS
928 while (items--)
929 PUSHs(*MARK++);
930 PUTBACK;
ad64d0ec 931 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
6b05c17a 932 }
a0d0e21e
LW
933 SPAGAIN;
934
935 sv = TOPs;
d3acc0f7 936 POPSTACK;
a0d0e21e 937 if (sv_isobject(sv)) {
33c27489 938 sv_unmagic(varsv, how);
ae21d580 939 /* Croak if a self-tie on an aggregate is attempted. */
b881518d 940 if (varsv == SvRV(sv) &&
d87ebaca
YST
941 (SvTYPE(varsv) == SVt_PVAV ||
942 SvTYPE(varsv) == SVt_PVHV))
ae21d580
JH
943 Perl_croak(aTHX_
944 "Self-ties of arrays and hashes are not supported");
a0714e2c 945 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
a0d0e21e 946 }
d343c3ef 947 LEAVE_with_name("call_TIE");
3280af22 948 SP = PL_stack_base + markoff;
a0d0e21e
LW
949 PUSHs(sv);
950 RETURN;
951}
952
953PP(pp_untie)
954{
27da23d5 955 dVAR; dSP;
5b468f54 956 MAGIC *mg;
33c27489 957 SV *sv = POPs;
1df70142 958 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 959 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
55497cff 960
ca0d4ed9 961 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
5b468f54
AMS
962 RETPUSHYES;
963
65eba18f 964 if ((mg = SvTIED_mg(sv, how))) {
1b6737cc 965 SV * const obj = SvRV(SvTIED_obj(sv, mg));
fa2b88e0 966 if (obj) {
c4420975 967 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
0bd48802 968 CV *cv;
c4420975 969 if (gv && isGV(gv) && (cv = GvCV(gv))) {
fa2b88e0 970 PUSHMARK(SP);
c33ef3ac 971 PUSHs(SvTIED_obj(MUTABLE_SV(gv), mg));
6e449a3a 972 mXPUSHi(SvREFCNT(obj) - 1);
fa2b88e0 973 PUTBACK;
d343c3ef 974 ENTER_with_name("call_UNTIE");
ad64d0ec 975 call_sv(MUTABLE_SV(cv), G_VOID);
d343c3ef 976 LEAVE_with_name("call_UNTIE");
fa2b88e0
JS
977 SPAGAIN;
978 }
a2a5de95
NC
979 else if (mg && SvREFCNT(obj) > 1) {
980 Perl_ck_warner(aTHX_ packWARN(WARN_UNTIE),
981 "untie attempted while %"UVuf" inner references still exist",
982 (UV)SvREFCNT(obj) - 1 ) ;
c4420975 983 }
cbdc8872
PP
984 }
985 }
38193a09 986 sv_unmagic(sv, how) ;
55497cff 987 RETPUSHYES;
a0d0e21e
LW
988}
989
c07a80fd
PP
990PP(pp_tied)
991{
97aff369 992 dVAR;
39644a26 993 dSP;
1b6737cc 994 const MAGIC *mg;
33c27489 995 SV *sv = POPs;
1df70142 996 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 997 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
5b468f54 998
4be76e1f 999 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
5b468f54 1000 RETPUSHUNDEF;
c07a80fd 1001
155aba94 1002 if ((mg = SvTIED_mg(sv, how))) {
dc456155 1003 PUSHs(SvTIED_obj(sv, mg));
33c27489 1004 RETURN;
c07a80fd 1005 }
c07a80fd
PP
1006 RETPUSHUNDEF;
1007}
1008
a0d0e21e
LW
1009PP(pp_dbmopen)
1010{
27da23d5 1011 dVAR; dSP;
a0d0e21e
LW
1012 dPOPPOPssrl;
1013 HV* stash;
07822e36 1014 GV *gv = NULL;
a0d0e21e 1015
85fbaab2 1016 HV * const hv = MUTABLE_HV(POPs);
84bafc02 1017 SV * const sv = newSVpvs_flags("AnyDBM_File", SVs_TEMP);
da51bb9b 1018 stash = gv_stashsv(sv, 0);
8ebc5c01 1019 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
a0d0e21e 1020 PUTBACK;
864dbfa3 1021 require_pv("AnyDBM_File.pm");
a0d0e21e 1022 SPAGAIN;
eff494dd 1023 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH")))
cea2e8a9 1024 DIE(aTHX_ "No dbm on this machine");
a0d0e21e
LW
1025 }
1026
57d3b86d 1027 ENTER;
924508f0 1028 PUSHMARK(SP);
6b05c17a 1029
924508f0 1030 EXTEND(SP, 5);
a0d0e21e
LW
1031 PUSHs(sv);
1032 PUSHs(left);
1033 if (SvIV(right))
6e449a3a 1034 mPUSHu(O_RDWR|O_CREAT);
a0d0e21e 1035 else
480e0d3c 1036 {
6e449a3a 1037 mPUSHu(O_RDWR);
480e0d3c
FC
1038 if (!SvOK(right)) right = &PL_sv_no;
1039 }
a0d0e21e 1040 PUSHs(right);
57d3b86d 1041 PUTBACK;
ad64d0ec 1042 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
a0d0e21e
LW
1043 SPAGAIN;
1044
1045 if (!sv_isobject(TOPs)) {
924508f0
GS
1046 SP--;
1047 PUSHMARK(SP);
a0d0e21e
LW
1048 PUSHs(sv);
1049 PUSHs(left);
6e449a3a 1050 mPUSHu(O_RDONLY);
a0d0e21e 1051 PUSHs(right);
a0d0e21e 1052 PUTBACK;
ad64d0ec 1053 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
a0d0e21e
LW
1054 SPAGAIN;
1055 }
1056
6b05c17a 1057 if (sv_isobject(TOPs)) {
ad64d0ec
NC
1058 sv_unmagic(MUTABLE_SV(hv), PERL_MAGIC_tied);
1059 sv_magic(MUTABLE_SV(hv), TOPs, PERL_MAGIC_tied, NULL, 0);
6b05c17a 1060 }
a0d0e21e
LW
1061 LEAVE;
1062 RETURN;
1063}
1064
a0d0e21e
LW
1065PP(pp_sselect)
1066{
a0d0e21e 1067#ifdef HAS_SELECT
97aff369 1068 dVAR; dSP; dTARGET;
eb578fdb
KW
1069 I32 i;
1070 I32 j;
1071 char *s;
1072 SV *sv;
65202027 1073 NV value;
a0d0e21e
LW
1074 I32 maxlen = 0;
1075 I32 nfound;
1076 struct timeval timebuf;
1077 struct timeval *tbuf = &timebuf;
1078 I32 growsize;
1079 char *fd_sets[4];
1080#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1081 I32 masksize;
1082 I32 offset;
1083 I32 k;
1084
1085# if BYTEORDER & 0xf0000
1086# define ORDERBYTE (0x88888888 - BYTEORDER)
1087# else
1088# define ORDERBYTE (0x4444 - BYTEORDER)
1089# endif
1090
1091#endif
1092
1093 SP -= 4;
1094 for (i = 1; i <= 3; i++) {
c4420975 1095 SV * const sv = SP[i];
9d6d5a79 1096 SvGETMAGIC(sv);
15547071
GA
1097 if (!SvOK(sv))
1098 continue;
1099 if (SvREADONLY(sv)) {
729c079f
NC
1100 if (SvIsCOW(sv))
1101 sv_force_normal_flags(sv, 0);
15547071 1102 if (SvREADONLY(sv) && !(SvPOK(sv) && SvCUR(sv) == 0))
6ad8f254 1103 Perl_croak_no_modify(aTHX);
729c079f 1104 }
4ef2275c 1105 if (!SvPOK(sv)) {
9d6d5a79
FC
1106 if (!SvPOKp(sv))
1107 Perl_ck_warner(aTHX_ packWARN(WARN_MISC),
1108 "Non-string passed as bitmask");
1109 SvPV_force_nomg_nolen(sv); /* force string conversion */
4ef2275c 1110 }
729c079f 1111 j = SvCUR(sv);
a0d0e21e
LW
1112 if (maxlen < j)
1113 maxlen = j;
1114 }
1115
5ff3f7a4 1116/* little endians can use vecs directly */
e366b469 1117#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
5ff3f7a4 1118# ifdef NFDBITS
a0d0e21e 1119
5ff3f7a4
GS
1120# ifndef NBBY
1121# define NBBY 8
1122# endif
a0d0e21e
LW
1123
1124 masksize = NFDBITS / NBBY;
5ff3f7a4 1125# else
a0d0e21e 1126 masksize = sizeof(long); /* documented int, everyone seems to use long */
5ff3f7a4 1127# endif
a0d0e21e
LW
1128 Zero(&fd_sets[0], 4, char*);
1129#endif
1130
ad517f75
MHM
1131# if SELECT_MIN_BITS == 1
1132 growsize = sizeof(fd_set);
1133# else
1134# if defined(__GLIBC__) && defined(__FD_SETSIZE)
1135# undef SELECT_MIN_BITS
1136# define SELECT_MIN_BITS __FD_SETSIZE
1137# endif
e366b469
PG
1138 /* If SELECT_MIN_BITS is greater than one we most probably will want
1139 * to align the sizes with SELECT_MIN_BITS/8 because for example
1140 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
1141 * UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
1142 * on (sets/tests/clears bits) is 32 bits. */
1143 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
e366b469
PG
1144# endif
1145
a0d0e21e
LW
1146 sv = SP[4];
1147 if (SvOK(sv)) {
1148 value = SvNV(sv);
1149 if (value < 0.0)
1150 value = 0.0;
1151 timebuf.tv_sec = (long)value;
65202027 1152 value -= (NV)timebuf.tv_sec;
a0d0e21e
LW
1153 timebuf.tv_usec = (long)(value * 1000000.0);
1154 }
1155 else
4608196e 1156 tbuf = NULL;
a0d0e21e
LW
1157
1158 for (i = 1; i <= 3; i++) {
1159 sv = SP[i];
15547071 1160 if (!SvOK(sv) || SvCUR(sv) == 0) {
a0d0e21e
LW
1161 fd_sets[i] = 0;
1162 continue;
1163 }
4ef2275c 1164 assert(SvPOK(sv));
a0d0e21e
LW
1165 j = SvLEN(sv);
1166 if (j < growsize) {
1167 Sv_Grow(sv, growsize);
a0d0e21e 1168 }
c07a80fd
PP
1169 j = SvCUR(sv);
1170 s = SvPVX(sv) + j;
1171 while (++j <= growsize) {
1172 *s++ = '\0';
1173 }
1174
a0d0e21e
LW
1175#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1176 s = SvPVX(sv);
a02a5408 1177 Newx(fd_sets[i], growsize, char);
a0d0e21e
LW
1178 for (offset = 0; offset < growsize; offset += masksize) {
1179 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1180 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1181 }
1182#else
1183 fd_sets[i] = SvPVX(sv);
1184#endif
1185 }
1186
dc4c69d9
JH
1187#ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1188 /* Can't make just the (void*) conditional because that would be
1189 * cpp #if within cpp macro, and not all compilers like that. */
1190 nfound = PerlSock_select(
1191 maxlen * 8,
1192 (Select_fd_set_t) fd_sets[1],
1193 (Select_fd_set_t) fd_sets[2],
1194 (Select_fd_set_t) fd_sets[3],
1195 (void*) tbuf); /* Workaround for compiler bug. */
1196#else
6ad3d225 1197 nfound = PerlSock_select(
a0d0e21e
LW
1198 maxlen * 8,
1199 (Select_fd_set_t) fd_sets[1],
1200 (Select_fd_set_t) fd_sets[2],
1201 (Select_fd_set_t) fd_sets[3],
1202 tbuf);
dc4c69d9 1203#endif
a0d0e21e
LW
1204 for (i = 1; i <= 3; i++) {
1205 if (fd_sets[i]) {
1206 sv = SP[i];
1207#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1208 s = SvPVX(sv);
1209 for (offset = 0; offset < growsize; offset += masksize) {
1210 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1211 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1212 }
1213 Safefree(fd_sets[i]);
1214#endif
1215 SvSETMAGIC(sv);
1216 }
1217 }
1218
4189264e 1219 PUSHi(nfound);
a0d0e21e 1220 if (GIMME == G_ARRAY && tbuf) {
65202027
DS
1221 value = (NV)(timebuf.tv_sec) +
1222 (NV)(timebuf.tv_usec) / 1000000.0;
6e449a3a 1223 mPUSHn(value);
a0d0e21e
LW
1224 }
1225 RETURN;
1226#else
cea2e8a9 1227 DIE(aTHX_ "select not implemented");
a0d0e21e
LW
1228#endif
1229}
1230
8226a3d7
NC
1231/*
1232=for apidoc setdefout
1233
1234Sets PL_defoutgv, the default file handle for output, to the passed in
1235typeglob. As PL_defoutgv "owns" a reference on its typeglob, the reference
1236count of the passed in typeglob is increased by one, and the reference count
1237of the typeglob that PL_defoutgv points to is decreased by one.
1238
1239=cut
1240*/
1241
4633a7c4 1242void
864dbfa3 1243Perl_setdefout(pTHX_ GV *gv)
4633a7c4 1244{
97aff369 1245 dVAR;
9a9bb270
FC
1246 PERL_ARGS_ASSERT_SETDEFOUT;
1247 SvREFCNT_inc_simple_void_NN(gv);
ef8d46e8 1248 SvREFCNT_dec(PL_defoutgv);
3280af22 1249 PL_defoutgv = gv;
4633a7c4
LW
1250}
1251
a0d0e21e
LW
1252PP(pp_select)
1253{
97aff369 1254 dVAR; dSP; dTARGET;
4633a7c4 1255 HV *hv;
159b6efe 1256 GV * const newdefout = (PL_op->op_private > 0) ? (MUTABLE_GV(POPs)) : NULL;
099be4f1 1257 GV * egv = GvEGVx(PL_defoutgv);
0df2568b 1258 GV * const *gvp;
4633a7c4 1259
4633a7c4 1260 if (!egv)
3280af22 1261 egv = PL_defoutgv;
099be4f1 1262 hv = isGV_with_GP(egv) ? GvSTASH(egv) : NULL;
0df2568b 1263 gvp = hv && HvENAME(hv)
204263bc
FC
1264 ? (GV**)hv_fetch(hv, GvNAME(egv), HEK_UTF8(GvNAME_HEK(egv)) ? -GvNAMELEN(egv) : GvNAMELEN(egv), FALSE)
1265 : NULL;
0df2568b 1266 if (gvp && *gvp == egv) {
bd61b366 1267 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
f86702cc 1268 XPUSHTARG;
0df2568b
FC
1269 }
1270 else {
ad64d0ec 1271 mXPUSHs(newRV(MUTABLE_SV(egv)));
4633a7c4
LW
1272 }
1273
1274 if (newdefout) {
ded8aa31
GS
1275 if (!GvIO(newdefout))
1276 gv_IOadd(newdefout);
4633a7c4
LW
1277 setdefout(newdefout);
1278 }
1279
a0d0e21e
LW
1280 RETURN;
1281}
1282
1283PP(pp_getc)
1284{
27da23d5 1285 dVAR; dSP; dTARGET;
30901a8a
FC
1286 GV * const gv =
1287 MAXARG==0 || (!TOPs && !POPs) ? PL_stdingv : MUTABLE_GV(POPs);
9c9f25b8 1288 IO *const io = GvIO(gv);
2ae324a7 1289
ac3697cd
NC
1290 if (MAXARG == 0)
1291 EXTEND(SP, 1);
1292
9c9f25b8 1293 if (io) {
a5e1d062 1294 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1295 if (mg) {
0240605e 1296 const U32 gimme = GIMME_V;
d682515d 1297 Perl_tied_method(aTHX_ "GETC", SP, MUTABLE_SV(io), mg, gimme, 0);
0240605e
NC
1298 if (gimme == G_SCALAR) {
1299 SPAGAIN;
a79db61d 1300 SvSetMagicSV_nosteal(TARG, TOPs);
0240605e
NC
1301 }
1302 return NORMAL;
a79db61d 1303 }
2ae324a7 1304 }
90133b69 1305 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
51087808 1306 if (!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
831e4cc3 1307 report_evil_fh(gv);
b5fe5ca2 1308 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1309 RETPUSHUNDEF;
90133b69 1310 }
bbce6d69 1311 TAINT;
76f68e9b 1312 sv_setpvs(TARG, " ");
9bc64814 1313 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
7d59b7e4
NIS
1314 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1315 /* Find out how many bytes the char needs */
aa07b2f6 1316 Size_t len = UTF8SKIP(SvPVX_const(TARG));
7d59b7e4
NIS
1317 if (len > 1) {
1318 SvGROW(TARG,len+1);
1319 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1320 SvCUR_set(TARG,1+len);
1321 }
1322 SvUTF8_on(TARG);
1323 }
a0d0e21e
LW
1324 PUSHTARG;
1325 RETURN;
1326}
1327
76e3520e 1328STATIC OP *
cea2e8a9 1329S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
a0d0e21e 1330{
27da23d5 1331 dVAR;
eb578fdb 1332 PERL_CONTEXT *cx;
f54cb97a 1333 const I32 gimme = GIMME_V;
a0d0e21e 1334
7918f24d
NC
1335 PERL_ARGS_ASSERT_DOFORM;
1336
7b190374
NC
1337 if (cv && CvCLONE(cv))
1338 cv = MUTABLE_CV(sv_2mortal(MUTABLE_SV(cv_clone(cv))));
1339
a0d0e21e
LW
1340 ENTER;
1341 SAVETMPS;
1342
146174a9 1343 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
10067d9a 1344 PUSHFORMAT(cx, retop);
f32c7e86
FC
1345 if (CvDEPTH(cv) >= 2) {
1346 PERL_STACK_OVERFLOW_CHECK();
1347 pad_push(CvPADLIST(cv), CvDEPTH(cv));
1348 }
fd617465 1349 SAVECOMPPAD();
f32c7e86 1350 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), CvDEPTH(cv));
a0d0e21e 1351
4633a7c4 1352 setdefout(gv); /* locally select filehandle so $% et al work */
a0d0e21e
LW
1353 return CvSTART(cv);
1354}
1355
1356PP(pp_enterwrite)
1357{
97aff369 1358 dVAR;
39644a26 1359 dSP;
eb578fdb
KW
1360 GV *gv;
1361 IO *io;
a0d0e21e 1362 GV *fgv;
07822e36
JH
1363 CV *cv = NULL;
1364 SV *tmpsv = NULL;
a0d0e21e 1365
2addaaf3 1366 if (MAXARG == 0) {
3280af22 1367 gv = PL_defoutgv;
2addaaf3
NC
1368 EXTEND(SP, 1);
1369 }
a0d0e21e 1370 else {
159b6efe 1371 gv = MUTABLE_GV(POPs);
a0d0e21e 1372 if (!gv)
3280af22 1373 gv = PL_defoutgv;
a0d0e21e 1374 }
a0d0e21e
LW
1375 io = GvIO(gv);
1376 if (!io) {
1377 RETPUSHNO;
1378 }
1379 if (IoFMT_GV(io))
1380 fgv = IoFMT_GV(io);
1381 else
1382 fgv = gv;
1383
2d1ebc9b 1384 assert(fgv);
a79db61d 1385
a0d0e21e 1386 cv = GvFORM(fgv);
a0d0e21e 1387 if (!cv) {
10edeb5d 1388 tmpsv = sv_newmortal();
f4a7049d 1389 gv_efullname4(tmpsv, fgv, NULL, FALSE);
2d1ebc9b 1390 DIE(aTHX_ "Undefined format \"%"SVf"\" called", SVfARG(tmpsv));
a0d0e21e 1391 }
44a8e56a 1392 IoFLAGS(io) &= ~IOf_DIDTOP;
8e4ecf23 1393 RETURNOP(doform(cv,gv,PL_op->op_next));
a0d0e21e
LW
1394}
1395
1396PP(pp_leavewrite)
1397{
27da23d5 1398 dVAR; dSP;
f9c764c5 1399 GV * const gv = cxstack[cxstack_ix].blk_format.gv;
eb578fdb 1400 IO * const io = GvIOp(gv);
8b8cacda 1401 PerlIO *ofp;
760ac839 1402 PerlIO *fp;
8772537c
AL
1403 SV **newsp;
1404 I32 gimme;
eb578fdb 1405 PERL_CONTEXT *cx;
8f89e5a9 1406 OP *retop;
a0d0e21e 1407
8b8cacda 1408 if (!io || !(ofp = IoOFP(io)))
1409 goto forget_top;
1410
760ac839 1411 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1412 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
8b8cacda 1413
3280af22
NIS
1414 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1415 PL_formtarget != PL_toptarget)
a0d0e21e 1416 {
4633a7c4
LW
1417 GV *fgv;
1418 CV *cv;
a0d0e21e
LW
1419 if (!IoTOP_GV(io)) {
1420 GV *topgv;
a0d0e21e
LW
1421
1422 if (!IoTOP_NAME(io)) {
1b6737cc 1423 SV *topname;
a0d0e21e
LW
1424 if (!IoFMT_NAME(io))
1425 IoFMT_NAME(io) = savepv(GvNAME(gv));
d0c0e7dd
FC
1426 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%"HEKf"_TOP",
1427 HEKfARG(GvNAME_HEK(gv))));
f776e3cd 1428 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
748a9306 1429 if ((topgv && GvFORM(topgv)) ||
fafc274c 1430 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
2e0de35c 1431 IoTOP_NAME(io) = savesvpv(topname);
a0d0e21e 1432 else
89529cee 1433 IoTOP_NAME(io) = savepvs("top");
a0d0e21e 1434 }
f776e3cd 1435 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
a0d0e21e 1436 if (!topgv || !GvFORM(topgv)) {
b929a54b 1437 IoLINES_LEFT(io) = IoPAGE_LEN(io);
a0d0e21e
LW
1438 goto forget_top;
1439 }
1440 IoTOP_GV(io) = topgv;
1441 }
748a9306
LW
1442 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1443 I32 lines = IoLINES_LEFT(io);
504618e9 1444 const char *s = SvPVX_const(PL_formtarget);
8e07c86e
AD
1445 if (lines <= 0) /* Yow, header didn't even fit!!! */
1446 goto forget_top;
748a9306
LW
1447 while (lines-- > 0) {
1448 s = strchr(s, '\n');
1449 if (!s)
1450 break;
1451 s++;
1452 }
1453 if (s) {
f54cb97a 1454 const STRLEN save = SvCUR(PL_formtarget);
aa07b2f6 1455 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
d75029d0
NIS
1456 do_print(PL_formtarget, ofp);
1457 SvCUR_set(PL_formtarget, save);
3280af22
NIS
1458 sv_chop(PL_formtarget, s);
1459 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW
1460 }
1461 }
a0d0e21e 1462 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
f6dfc736 1463 do_print(GvSV(gv_fetchpvs("\f", GV_ADD, SVt_PV)), ofp);
a0d0e21e
LW
1464 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1465 IoPAGE(io)++;
3280af22 1466 PL_formtarget = PL_toptarget;
748a9306 1467 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4
LW
1468 fgv = IoTOP_GV(io);
1469 if (!fgv)
cea2e8a9 1470 DIE(aTHX_ "bad top format reference");
4633a7c4 1471 cv = GvFORM(fgv);
1df70142
AL
1472 if (!cv) {
1473 SV * const sv = sv_newmortal();
bd61b366 1474 gv_efullname4(sv, fgv, NULL, FALSE);
44b7e78a 1475 DIE(aTHX_ "Undefined top format \"%"SVf"\" called", SVfARG(sv));
4633a7c4 1476 }
43cd5cb7 1477 return doform(cv, gv, PL_op);
a0d0e21e
LW
1478 }
1479
1480 forget_top:
3280af22 1481 POPBLOCK(cx,PL_curpm);
a0d0e21e 1482 POPFORMAT(cx);
8f89e5a9 1483 retop = cx->blk_sub.retop;
43cd5cb7 1484 SP = newsp; /* ignore retval of formline */
a0d0e21e
LW
1485 LEAVE;
1486
c782dc1d
FC
1487 if (!io || !(fp = IoOFP(io))) {
1488 if (io && IoIFP(io))
7716c5c5 1489 report_wrongway_fh(gv, '<');
c521cf7c 1490 else
7716c5c5 1491 report_evil_fh(gv);
3280af22 1492 PUSHs(&PL_sv_no);
a0d0e21e
LW
1493 }
1494 else {
3280af22 1495 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
a2a5de95 1496 Perl_ck_warner(aTHX_ packWARN(WARN_IO), "page overflow");
a0d0e21e 1497 }
d75029d0 1498 if (!do_print(PL_formtarget, fp))
3280af22 1499 PUSHs(&PL_sv_no);
a0d0e21e 1500 else {
3280af22
NIS
1501 FmLINES(PL_formtarget) = 0;
1502 SvCUR_set(PL_formtarget, 0);
1503 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1504 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1505 (void)PerlIO_flush(fp);
3280af22 1506 PUSHs(&PL_sv_yes);
a0d0e21e
LW
1507 }
1508 }
3280af22 1509 PL_formtarget = PL_bodytarget;
29033a8a 1510 PERL_UNUSED_VAR(gimme);
8e4ecf23 1511 RETURNOP(retop);
a0d0e21e
LW
1512}
1513
1514PP(pp_prtf)
1515{
27da23d5 1516 dVAR; dSP; dMARK; dORIGMARK;
760ac839 1517 PerlIO *fp;
a0d0e21e 1518
159b6efe
NC
1519 GV * const gv
1520 = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv;
9c9f25b8 1521 IO *const io = GvIO(gv);
46fc3d4c 1522
87385d72
FC
1523 /* Treat empty list as "" */
1524 if (MARK == SP) XPUSHs(&PL_sv_no);
1525
9c9f25b8 1526 if (io) {
a5e1d062 1527 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d
AL
1528 if (mg) {
1529 if (MARK == ORIGMARK) {
1530 MEXTEND(SP, 1);
1531 ++MARK;
1532 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1533 ++SP;
1534 }
d682515d
NC
1535 return Perl_tied_method(aTHX_ "PRINTF", mark - 1, MUTABLE_SV(io),
1536 mg,
1537 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1538 sp - mark);
a79db61d 1539 }
46fc3d4c
PP
1540 }
1541
9c9f25b8 1542 if (!io) {
51087808 1543 report_evil_fh(gv);
93189314 1544 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW
1545 goto just_say_no;
1546 }
1547 else if (!(fp = IoOFP(io))) {
7716c5c5
NC
1548 if (IoIFP(io))
1549 report_wrongway_fh(gv, '<');
1550 else if (ckWARN(WARN_CLOSED))
1551 report_evil_fh(gv);
93189314 1552 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
a0d0e21e
LW
1553 goto just_say_no;
1554 }
1555 else {
c7bd8b84 1556 SV *sv = sv_newmortal();
a0d0e21e
LW
1557 do_sprintf(sv, SP - MARK, MARK + 1);
1558 if (!do_print(sv, fp))
1559 goto just_say_no;
1560
1561 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1562 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW
1563 goto just_say_no;
1564 }
a0d0e21e 1565 SP = ORIGMARK;
3280af22 1566 PUSHs(&PL_sv_yes);
a0d0e21e
LW
1567 RETURN;
1568
1569 just_say_no:
a0d0e21e 1570 SP = ORIGMARK;
3280af22 1571 PUSHs(&PL_sv_undef);
a0d0e21e
LW
1572 RETURN;
1573}
1574
c07a80fd
PP
1575PP(pp_sysopen)
1576{
97aff369 1577 dVAR;
39644a26 1578 dSP;
de5e49e1 1579 const int perm = (MAXARG > 3 && (TOPs || POPs)) ? POPi : 0666;
1df70142 1580 const int mode = POPi;
1b6737cc 1581 SV * const sv = POPs;
159b6efe 1582 GV * const gv = MUTABLE_GV(POPs);
1b6737cc 1583 STRLEN len;
c07a80fd 1584
4592e6ca 1585 /* Need TIEHANDLE method ? */
1b6737cc 1586 const char * const tmps = SvPV_const(sv, len);
e62f0680 1587 /* FIXME? do_open should do const */
4608196e 1588 if (do_open(gv, tmps, len, TRUE, mode, perm, NULL)) {
c07a80fd 1589 IoLINES(GvIOp(gv)) = 0;
3280af22 1590 PUSHs(&PL_sv_yes);
c07a80fd
PP
1591 }
1592 else {
3280af22 1593 PUSHs(&PL_sv_undef);
c07a80fd
PP
1594 }
1595 RETURN;
1596}
1597
a0d0e21e
LW
1598PP(pp_sysread)
1599{
27da23d5 1600 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
0b423688 1601 SSize_t offset;
a0d0e21e
LW
1602 IO *io;
1603 char *buffer;
0b423688 1604 STRLEN orig_size;
5b54f415 1605 SSize_t length;
eb5c063a 1606 SSize_t count;
748a9306 1607 SV *bufsv;
a0d0e21e 1608 STRLEN blen;
eb5c063a 1609 int fp_utf8;
1dd30107
NC
1610 int buffer_utf8;
1611 SV *read_target;
eb5c063a
NIS
1612 Size_t got = 0;
1613 Size_t wanted;
1d636c13 1614 bool charstart = FALSE;
87330c3c
JH
1615 STRLEN charskip = 0;
1616 STRLEN skip = 0;
a0d0e21e 1617
159b6efe 1618 GV * const gv = MUTABLE_GV(*++MARK);
5b468f54 1619 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1b6737cc 1620 && gv && (io = GvIO(gv)) )
137443ea 1621 {
a5e1d062 1622 const MAGIC *const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1b6737cc 1623 if (mg) {
d682515d
NC
1624 return Perl_tied_method(aTHX_ "READ", mark - 1, MUTABLE_SV(io), mg,
1625 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1626 sp - mark);
1b6737cc 1627 }
2ae324a7
PP
1628 }
1629
a0d0e21e
LW
1630 if (!gv)
1631 goto say_undef;
748a9306 1632 bufsv = *++MARK;
ff68c719 1633 if (! SvOK(bufsv))
76f68e9b 1634 sv_setpvs(bufsv, "");
a0d0e21e 1635 length = SvIVx(*++MARK);
4bac9ae4
CS
1636 if (length < 0)
1637 DIE(aTHX_ "Negative length");
748a9306 1638 SETERRNO(0,0);
a0d0e21e
LW
1639 if (MARK < SP)
1640 offset = SvIVx(*++MARK);
1641 else
1642 offset = 0;
1643 io = GvIO(gv);
b5fe5ca2 1644 if (!io || !IoIFP(io)) {
51087808 1645 report_evil_fh(gv);
b5fe5ca2 1646 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1647 goto say_undef;
b5fe5ca2 1648 }
0064a8a9 1649 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
7d59b7e4 1650 buffer = SvPVutf8_force(bufsv, blen);
1e54db1a 1651 /* UTF-8 may not have been set if they are all low bytes */
eb5c063a 1652 SvUTF8_on(bufsv);
9b9d7ce8 1653 buffer_utf8 = 0;
7d59b7e4
NIS
1654 }
1655 else {
1656 buffer = SvPV_force(bufsv, blen);
1dd30107 1657 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
7d59b7e4 1658 }
4bac9ae4 1659 if (DO_UTF8(bufsv)) {
3f914778 1660 blen = sv_len_utf8_nomg(bufsv);
4bac9ae4 1661 }
7d59b7e4 1662
d0965105
JH
1663 charstart = TRUE;
1664 charskip = 0;
87330c3c 1665 skip = 0;
4bac9ae4 1666 wanted = length;
d0965105 1667
a0d0e21e 1668#ifdef HAS_SOCKET
533c011a 1669 if (PL_op->op_type == OP_RECV) {
0b423688 1670 Sock_size_t bufsize;
46fc3d4c 1671 char namebuf[MAXPATHLEN];
b5afd346 1672#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
490ab354
JH
1673 bufsize = sizeof (struct sockaddr_in);
1674#else
46fc3d4c 1675 bufsize = sizeof namebuf;
490ab354 1676#endif
abf95952
IZ
1677#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1678 if (bufsize >= 256)
1679 bufsize = 255;
1680#endif
eb160463 1681 buffer = SvGROW(bufsv, (STRLEN)(length+1));
bbce6d69 1682 /* 'offset' means 'flags' here */
eb5c063a 1683 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
10edeb5d 1684 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1685 if (count < 0)
a0d0e21e 1686 RETPUSHUNDEF;
8eb023a9
DM
1687 /* MSG_TRUNC can give oversized count; quietly lose it */
1688 if (count > length)
1689 count = length;
4107cc59
OF
1690#ifdef EPOC
1691 /* Bogus return without padding */
1692 bufsize = sizeof (struct sockaddr_in);
1693#endif
eb5c063a 1694 SvCUR_set(bufsv, count);
748a9306
LW
1695 *SvEND(bufsv) = '\0';
1696 (void)SvPOK_only(bufsv);
eb5c063a
NIS
1697 if (fp_utf8)
1698 SvUTF8_on(bufsv);
748a9306 1699 SvSETMAGIC(bufsv);
aac0dd9a 1700 /* This should not be marked tainted if the fp is marked clean */
bbce6d69
PP
1701 if (!(IoFLAGS(io) & IOf_UNTAINT))
1702 SvTAINTED_on(bufsv);
a0d0e21e 1703 SP = ORIGMARK;
46fc3d4c 1704 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW
1705 PUSHs(TARG);
1706 RETURN;
1707 }
a0d0e21e 1708#endif
bbce6d69 1709 if (offset < 0) {
0b423688 1710 if (-offset > (SSize_t)blen)
cea2e8a9 1711 DIE(aTHX_ "Offset outside string");
bbce6d69
PP
1712 offset += blen;
1713 }
eb5c063a
NIS
1714 if (DO_UTF8(bufsv)) {
1715 /* convert offset-as-chars to offset-as-bytes */
d5f981bb 1716 if (offset >= (SSize_t)blen)
6960c29a
CH
1717 offset += SvCUR(bufsv) - blen;
1718 else
1719 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
eb5c063a
NIS
1720 }
1721 more_bytes:
0b423688 1722 orig_size = SvCUR(bufsv);
1dd30107
NC
1723 /* Allocating length + offset + 1 isn't perfect in the case of reading
1724 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1725 unduly.
1726 (should be 2 * length + offset + 1, or possibly something longer if
1727 PL_encoding is true) */
eb160463 1728 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
0b423688
TC
1729 if (offset > 0 && offset > (SSize_t)orig_size) { /* Zero any newly allocated space */
1730 Zero(buffer+orig_size, offset-orig_size, char);
cd52b7b2 1731 }
eb5c063a 1732 buffer = buffer + offset;
1dd30107
NC
1733 if (!buffer_utf8) {
1734 read_target = bufsv;
1735 } else {
1736 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1737 concatenate it to the current buffer. */
1738
1739 /* Truncate the existing buffer to the start of where we will be
1740 reading to: */
1741 SvCUR_set(bufsv, offset);
1742
1743 read_target = sv_newmortal();
862a34c6 1744 SvUPGRADE(read_target, SVt_PV);
fe2774ed 1745 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1dd30107 1746 }
eb5c063a 1747
533c011a 1748 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1749#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1750 if (IoTYPE(io) == IoTYPE_SOCKET) {
eb5c063a
NIS
1751 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1752 buffer, length, 0);
a7092146
GS
1753 }
1754 else
1755#endif
1756 {
eb5c063a
NIS
1757 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1758 buffer, length);
a7092146 1759 }
a0d0e21e
LW
1760 }
1761 else
1762#ifdef HAS_SOCKET__bad_code_maybe
50952442 1763 if (IoTYPE(io) == IoTYPE_SOCKET) {
0b423688 1764 Sock_size_t bufsize;
46fc3d4c 1765 char namebuf[MAXPATHLEN];
490ab354
JH
1766#if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1767 bufsize = sizeof (struct sockaddr_in);
1768#else
46fc3d4c 1769 bufsize = sizeof namebuf;
490ab354 1770#endif
eb5c063a 1771 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
46fc3d4c 1772 (struct sockaddr *)namebuf, &bufsize);
a0d0e21e
LW
1773 }
1774 else
1775#endif
3b02c43c 1776 {
eb5c063a
NIS
1777 count = PerlIO_read(IoIFP(io), buffer, length);
1778 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1779 if (count == 0 && PerlIO_error(IoIFP(io)))
1780 count = -1;
3b02c43c 1781 }
eb5c063a 1782 if (count < 0) {
7716c5c5 1783 if (IoTYPE(io) == IoTYPE_WRONLY)
a5390457 1784 report_wrongway_fh(gv, '>');
a0d0e21e 1785 goto say_undef;
af8c498a 1786 }
aa07b2f6 1787 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1dd30107
NC
1788 *SvEND(read_target) = '\0';
1789 (void)SvPOK_only(read_target);
0064a8a9 1790 if (fp_utf8 && !IN_BYTES) {
eb5c063a 1791 /* Look at utf8 we got back and count the characters */
1df70142 1792 const char *bend = buffer + count;
eb5c063a 1793 while (buffer < bend) {
d0965105
JH
1794 if (charstart) {
1795 skip = UTF8SKIP(buffer);
1796 charskip = 0;
1797 }
1798 if (buffer - charskip + skip > bend) {
eb5c063a
NIS
1799 /* partial character - try for rest of it */
1800 length = skip - (bend-buffer);
aa07b2f6 1801 offset = bend - SvPVX_const(bufsv);
d0965105
JH
1802 charstart = FALSE;
1803 charskip += count;
eb5c063a
NIS
1804 goto more_bytes;
1805 }
1806 else {
1807 got++;
1808 buffer += skip;
d0965105
JH
1809 charstart = TRUE;
1810 charskip = 0;
eb5c063a
NIS
1811 }
1812 }
1813 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1814 provided amount read (count) was what was requested (length)
1815 */
1816 if (got < wanted && count == length) {
d0965105 1817 length = wanted - got;
aa07b2f6 1818 offset = bend - SvPVX_const(bufsv);
eb5c063a
NIS
1819 goto more_bytes;
1820 }
1821 /* return value is character count */
1822 count = got;
1823 SvUTF8_on(bufsv);
1824 }
1dd30107
NC
1825 else if (buffer_utf8) {
1826 /* Let svcatsv upgrade the bytes we read in to utf8.
1827 The buffer is a mortal so will be freed soon. */
1828 sv_catsv_nomg(bufsv, read_target);
1829 }
748a9306 1830 SvSETMAGIC(bufsv);
aac0dd9a 1831 /* This should not be marked tainted if the fp is marked clean */
bbce6d69
PP
1832 if (!(IoFLAGS(io) & IOf_UNTAINT))
1833 SvTAINTED_on(bufsv);
a0d0e21e 1834 SP = ORIGMARK;
eb5c063a 1835 PUSHi(count);
a0d0e21e
LW
1836 RETURN;
1837
1838 say_undef:
1839 SP = ORIGMARK;
1840 RETPUSHUNDEF;
1841}
1842
60504e18 1843PP(pp_syswrite)
a0d0e21e 1844{
27da23d5 1845 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
748a9306 1846 SV *bufsv;
83003860 1847 const char *buffer;
8c99d73e 1848 SSize_t retval;
a0d0e21e 1849 STRLEN blen;
c9cb0f41 1850 STRLEN orig_blen_bytes;
64a1bc8e 1851 const int op_type = PL_op->op_type;
c9cb0f41
NC
1852 bool doing_utf8;
1853 U8 *tmpbuf = NULL;
159b6efe 1854 GV *const gv = MUTABLE_GV(*++MARK);
91472ad4
NC
1855 IO *const io = GvIO(gv);
1856
1857 if (op_type == OP_SYSWRITE && io) {
a5e1d062 1858 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1859 if (mg) {
a79db61d 1860 if (MARK == SP - 1) {
c8834ab7
TC
1861 SV *sv = *SP;
1862 mXPUSHi(sv_len(sv));
a79db61d
AL
1863 PUTBACK;
1864 }
1865
d682515d
NC
1866 return Perl_tied_method(aTHX_ "WRITE", mark - 1, MUTABLE_SV(io), mg,
1867 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1868 sp - mark);
64a1bc8e 1869 }
1d603a67 1870 }
a0d0e21e
LW
1871 if (!gv)
1872 goto say_undef;
64a1bc8e 1873
748a9306 1874 bufsv = *++MARK;
64a1bc8e 1875
748a9306 1876 SETERRNO(0,0);
cf167416 1877 if (!io || !IoIFP(io) || IoTYPE(io) == IoTYPE_RDONLY) {
8c99d73e 1878 retval = -1;
51087808
NC
1879 if (io && IoIFP(io))
1880 report_wrongway_fh(gv, '<');
1881 else
1882 report_evil_fh(gv);
b5fe5ca2 1883 SETERRNO(EBADF,RMS_IFI);
7d59b7e4
NIS
1884 goto say_undef;
1885 }
1886
c9cb0f41
NC
1887 /* Do this first to trigger any overloading. */
1888 buffer = SvPV_const(bufsv, blen);
1889 orig_blen_bytes = blen;
1890 doing_utf8 = DO_UTF8(bufsv);
1891
7d59b7e4 1892 if (PerlIO_isutf8(IoIFP(io))) {
6aa2f6a7 1893 if (!SvUTF8(bufsv)) {
c9cb0f41
NC
1894 /* We don't modify the original scalar. */
1895 tmpbuf = bytes_to_utf8((const U8*) buffer, &blen);
1896 buffer = (char *) tmpbuf;
1897 doing_utf8 = TRUE;
1898 }
a0d0e21e 1899 }
c9cb0f41
NC
1900 else if (doing_utf8) {
1901 STRLEN tmplen = blen;
a79db61d 1902 U8 * const result = bytes_from_utf8((const U8*) buffer, &tmplen, &doing_utf8);
c9cb0f41
NC
1903 if (!doing_utf8) {
1904 tmpbuf = result;
1905 buffer = (char *) tmpbuf;
1906 blen = tmplen;
1907 }
1908 else {
1909 assert((char *)result == buffer);
1910 Perl_croak(aTHX_ "Wide character in %s", OP_DESC(PL_op));
1911 }
7d59b7e4
NIS
1912 }
1913
e2712234 1914#ifdef HAS_SOCKET
7627e6d0 1915 if (op_type == OP_SEND) {
e2712234
NC
1916 const int flags = SvIVx(*++MARK);
1917 if (SP > MARK) {
1918 STRLEN mlen;
1919 char * const sockbuf = SvPVx(*++MARK, mlen);
1920 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1921 flags, (struct sockaddr *)sockbuf, mlen);
1922 }
1923 else {
1924 retval
1925 = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, flags);
1926 }
7627e6d0
NC
1927 }
1928 else
e2712234 1929#endif
7627e6d0 1930 {
c9cb0f41
NC
1931 Size_t length = 0; /* This length is in characters. */
1932 STRLEN blen_chars;
7d59b7e4 1933 IV offset;
c9cb0f41
NC
1934
1935 if (doing_utf8) {
1936 if (tmpbuf) {
1937 /* The SV is bytes, and we've had to upgrade it. */
1938 blen_chars = orig_blen_bytes;
1939 } else {
1940 /* The SV really is UTF-8. */
3f914778
FC
1941 /* Don't call sv_len_utf8 on a magical or overloaded
1942 scalar, as we might get back a different result. */
1943 blen_chars = sv_or_pv_len_utf8(bufsv, buffer, blen);
c9cb0f41
NC
1944 }
1945 } else {
1946 blen_chars = blen;
1947 }
1948
1949 if (MARK >= SP) {
1950 length = blen_chars;
1951 } else {
1952#if Size_t_size > IVSIZE
1953 length = (Size_t)SvNVx(*++MARK);
1954#else
1955 length = (Size_t)SvIVx(*++MARK);
1956#endif
4b0c4b6f
NC
1957 if ((SSize_t)length < 0) {
1958 Safefree(tmpbuf);
c9cb0f41 1959 DIE(aTHX_ "Negative length");
4b0c4b6f 1960 }
7d59b7e4 1961 }
c9cb0f41 1962
bbce6d69 1963 if (MARK < SP) {
a0d0e21e 1964 offset = SvIVx(*++MARK);
bbce6d69 1965 if (offset < 0) {
4b0c4b6f
NC
1966 if (-offset > (IV)blen_chars) {
1967 Safefree(tmpbuf);
cea2e8a9 1968 DIE(aTHX_ "Offset outside string");
4b0c4b6f 1969 }
c9cb0f41 1970 offset += blen_chars;
3c946528 1971 } else if (offset > (IV)blen_chars) {
4b0c4b6f 1972 Safefree(tmpbuf);
cea2e8a9 1973 DIE(aTHX_ "Offset outside string");
4b0c4b6f 1974 }
bbce6d69 1975 } else
a0d0e21e 1976 offset = 0;
c9cb0f41
NC
1977 if (length > blen_chars - offset)
1978 length = blen_chars - offset;
1979 if (doing_utf8) {
1980 /* Here we convert length from characters to bytes. */
1981 if (tmpbuf || SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
1982 /* Either we had to convert the SV, or the SV is magical, or
1983 the SV has overloading, in which case we can't or mustn't
1984 or mustn't call it again. */
1985
1986 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
1987 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1988 } else {
1989 /* It's a real UTF-8 SV, and it's not going to change under
1990 us. Take advantage of any cache. */
1991 I32 start = offset;
1992 I32 len_I32 = length;
1993
1994 /* Convert the start and end character positions to bytes.
1995 Remember that the second argument to sv_pos_u2b is relative
1996 to the first. */
1997 sv_pos_u2b(bufsv, &start, &len_I32);
1998
1999 buffer += start;
2000 length = len_I32;
2001 }
7d59b7e4
NIS
2002 }
2003 else {
2004 buffer = buffer+offset;
2005 }
a7092146 2006#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 2007 if (IoTYPE(io) == IoTYPE_SOCKET) {
8c99d73e 2008 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
7d59b7e4 2009 buffer, length, 0);
a7092146
GS
2010 }
2011 else
2012#endif
2013 {
94e4c244 2014 /* See the note at doio.c:do_print about filesize limits. --jhi */
8c99d73e 2015 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
7d59b7e4 2016 buffer, length);
a7092146 2017 }
a0d0e21e 2018 }
c9cb0f41 2019
8c99d73e 2020 if (retval < 0)
a0d0e21e
LW
2021 goto say_undef;
2022 SP = ORIGMARK;
c9cb0f41 2023 if (doing_utf8)
f36eea10 2024 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
4b0c4b6f 2025
a79db61d 2026 Safefree(tmpbuf);
8c99d73e
GS
2027#if Size_t_size > IVSIZE
2028 PUSHn(retval);
2029#else
2030 PUSHi(retval);
2031#endif
a0d0e21e
LW
2032 RETURN;
2033
2034 say_undef:
a79db61d 2035 Safefree(tmpbuf);
a0d0e21e
LW
2036 SP = ORIGMARK;
2037 RETPUSHUNDEF;
2038}
2039
a0d0e21e
LW
2040PP(pp_eof)
2041{
27da23d5 2042 dVAR; dSP;
a0d0e21e 2043 GV *gv;
32e65323 2044 IO *io;
a5e1d062 2045 const MAGIC *mg;
bc0c81ca
NC
2046 /*
2047 * in Perl 5.12 and later, the additional parameter is a bitmask:
2048 * 0 = eof
2049 * 1 = eof(FH)
2050 * 2 = eof() <- ARGV magic
2051 *
2052 * I'll rely on the compiler's trace flow analysis to decide whether to
2053 * actually assign this out here, or punt it into the only block where it is
2054 * used. Doing it out here is DRY on the condition logic.
2055 */
2056 unsigned int which;
a0d0e21e 2057
bc0c81ca 2058 if (MAXARG) {
32e65323 2059 gv = PL_last_in_gv = MUTABLE_GV(POPs); /* eof(FH) */
bc0c81ca
NC
2060 which = 1;
2061 }
b5f55170
NC
2062 else {
2063 EXTEND(SP, 1);
2064
bc0c81ca 2065 if (PL_op->op_flags & OPf_SPECIAL) {
b5f55170 2066 gv = PL_last_in_gv = GvEGVx(PL_argvgv); /* eof() - ARGV magic */
bc0c81ca
NC
2067 which = 2;
2068 }
2069 else {
b5f55170 2070 gv = PL_last_in_gv; /* eof */
bc0c81ca
NC
2071 which = 0;
2072 }
b5f55170 2073 }
32e65323
CS
2074
2075 if (!gv)
2076 RETPUSHNO;
2077
2078 if ((io = GvIO(gv)) && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) {
d682515d 2079 return tied_method1("EOF", SP, MUTABLE_SV(io), mg, newSVuv(which));
146174a9 2080 }
4592e6ca 2081
32e65323
CS
2082 if (!MAXARG && (PL_op->op_flags & OPf_SPECIAL)) { /* eof() */
2083 if (io && !IoIFP(io)) {
2084 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
2085 IoLINES(io) = 0;
2086 IoFLAGS(io) &= ~IOf_START;
2087 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, NULL);
2088 if (GvSV(gv))
2089 sv_setpvs(GvSV(gv), "-");
2090 else
2091 GvSV(gv) = newSVpvs("-");
2092 SvSETMAGIC(GvSV(gv));
2093 }
2094 else if (!nextargv(gv))
2095 RETPUSHYES;
6136c704 2096 }
4592e6ca
NIS
2097 }
2098
32e65323 2099 PUSHs(boolSV(do_eof(gv)));
a0d0e21e
LW
2100 RETURN;
2101}
2102
2103PP(pp_tell)
2104{
27da23d5 2105 dVAR; dSP; dTARGET;
301e8125 2106 GV *gv;
5b468f54 2107 IO *io;
a0d0e21e 2108
b64a1294 2109 if (MAXARG != 0 && (TOPs || POPs))
159b6efe 2110 PL_last_in_gv = MUTABLE_GV(POPs);
ac3697cd
NC
2111 else
2112 EXTEND(SP, 1);
c4420975 2113 gv = PL_last_in_gv;
4592e6ca 2114
9c9f25b8
NC
2115 io = GvIO(gv);
2116 if (io) {
a5e1d062 2117 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2118 if (mg) {
d682515d 2119 return tied_method0("TELL", SP, MUTABLE_SV(io), mg);
a79db61d 2120 }
4592e6ca 2121 }
f4817f32 2122 else if (!gv) {
f03173f2
RGS
2123 if (!errno)
2124 SETERRNO(EBADF,RMS_IFI);
2125 PUSHi(-1);
2126 RETURN;
2127 }
4592e6ca 2128
146174a9
CB
2129#if LSEEKSIZE > IVSIZE
2130 PUSHn( do_tell(gv) );
2131#else
a0d0e21e 2132 PUSHi( do_tell(gv) );
146174a9 2133#endif
a0d0e21e
LW
2134 RETURN;
2135}
2136
137443ea
PP
2137PP(pp_sysseek)
2138{
27da23d5 2139 dVAR; dSP;
1df70142 2140 const int whence = POPi;
146174a9 2141#if LSEEKSIZE > IVSIZE
7452cf6a 2142 const Off_t offset = (Off_t)SvNVx(POPs);
146174a9 2143#else
7452cf6a 2144 const Off_t offset = (Off_t)SvIVx(POPs);
146174a9 2145#endif
a0d0e21e 2146
159b6efe 2147 GV * const gv = PL_last_in_gv = MUTABLE_GV(POPs);
9c9f25b8 2148 IO *const io = GvIO(gv);
4592e6ca 2149
9c9f25b8 2150 if (io) {
a5e1d062 2151 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2152 if (mg) {
cb50131a 2153#if LSEEKSIZE > IVSIZE
74f0b550 2154 SV *const offset_sv = newSVnv((NV) offset);
cb50131a 2155#else
74f0b550 2156 SV *const offset_sv = newSViv(offset);
cb50131a 2157#endif
bc0c81ca 2158
d682515d
NC
2159 return tied_method2("SEEK", SP, MUTABLE_SV(io), mg, offset_sv,
2160 newSViv(whence));
a79db61d 2161 }
4592e6ca
NIS
2162 }
2163
533c011a 2164 if (PL_op->op_type == OP_SEEK)
8903cb82
PP
2165 PUSHs(boolSV(do_seek(gv, offset, whence)));
2166 else {
0bcc34c2 2167 const Off_t sought = do_sysseek(gv, offset, whence);
b448e4fe 2168 if (sought < 0)
146174a9
CB
2169 PUSHs(&PL_sv_undef);
2170 else {
7452cf6a 2171 SV* const sv = sought ?
146174a9 2172#if LSEEKSIZE > IVSIZE
b448e4fe 2173 newSVnv((NV)sought)
146174a9 2174#else
b448e4fe 2175 newSViv(sought)
146174a9
CB
2176#endif
2177 : newSVpvn(zero_but_true, ZBTLEN);
6e449a3a 2178 mPUSHs(sv);
146174a9 2179 }
8903cb82 2180 }
a0d0e21e
LW
2181 RETURN;
2182}
2183
2184PP(pp_truncate)
2185{
97aff369 2186 dVAR;
39644a26 2187 dSP;
8c99d73e
GS
2188 /* There seems to be no consensus on the length type of truncate()
2189 * and ftruncate(), both off_t and size_t have supporters. In
2190 * general one would think that when using large files, off_t is
2191 * at least as wide as size_t, so using an off_t should be okay. */
2192 /* XXX Configure probe for the length type of *truncate() needed XXX */
0bcc34c2 2193 Off_t len;
a0d0e21e 2194
25342a55 2195#if Off_t_size > IVSIZE
0bcc34c2 2196 len = (Off_t)POPn;
8c99d73e 2197#else
0bcc34c2 2198 len = (Off_t)POPi;
8c99d73e
GS
2199#endif
2200 /* Checking for length < 0 is problematic as the type might or
301e8125 2201 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 2202 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2203 SETERRNO(0,0);
d05c1ba0 2204 {
5e0adc2d 2205 SV * const sv = POPs;
d05c1ba0
JH
2206 int result = 1;
2207 GV *tmpgv;
090bf15b
SR
2208 IO *io;
2209
42409c40
FC
2210 if (PL_op->op_flags & OPf_SPECIAL
2211 ? (tmpgv = gv_fetchsv(sv, 0, SVt_PVIO), 1)
2212 : !!(tmpgv = MAYBE_DEREF_GV(sv)) ) {
9c9f25b8
NC
2213 io = GvIO(tmpgv);
2214 if (!io)
090bf15b 2215 result = 0;
d05c1ba0 2216 else {
090bf15b 2217 PerlIO *fp;
090bf15b
SR
2218 do_ftruncate_io:
2219 TAINT_PROPER("truncate");
2220 if (!(fp = IoIFP(io))) {
2221 result = 0;
2222 }
2223 else {
2224 PerlIO_flush(fp);
cbdc8872 2225#ifdef HAS_TRUNCATE
090bf15b 2226 if (ftruncate(PerlIO_fileno(fp), len) < 0)
301e8125 2227#else
090bf15b 2228 if (my_chsize(PerlIO_fileno(fp), len) < 0)
cbdc8872 2229#endif
090bf15b
SR
2230 result = 0;
2231 }
d05c1ba0 2232 }
cbdc8872 2233 }
5e0adc2d 2234 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2235 io = MUTABLE_IO(SvRV(sv)); /* *main::FRED{IO} for example */
090bf15b 2236 goto do_ftruncate_io;
5e0adc2d
FC
2237 }
2238 else {
2239 const char * const name = SvPV_nomg_const_nolen(sv);
d05c1ba0 2240 TAINT_PROPER("truncate");
cbdc8872 2241#ifdef HAS_TRUNCATE
d05c1ba0
JH
2242 if (truncate(name, len) < 0)
2243 result = 0;
cbdc8872 2244#else
d05c1ba0 2245 {
7452cf6a 2246 const int tmpfd = PerlLIO_open(name, O_RDWR);
d05c1ba0 2247
7452cf6a 2248 if (tmpfd < 0)
cbdc8872 2249 result = 0;
d05c1ba0
JH
2250 else {
2251 if (my_chsize(tmpfd, len) < 0)
2252 result = 0;
2253 PerlLIO_close(tmpfd);
2254 }
cbdc8872 2255 }
a0d0e21e 2256#endif
d05c1ba0 2257 }
a0d0e21e 2258
d05c1ba0
JH
2259 if (result)
2260 RETPUSHYES;
2261 if (!errno)
93189314 2262 SETERRNO(EBADF,RMS_IFI);
d05c1ba0
JH
2263 RETPUSHUNDEF;
2264 }
a0d0e21e
LW
2265}
2266
a0d0e21e
LW
2267PP(pp_ioctl)
2268{
97aff369 2269 dVAR; dSP; dTARGET;
7452cf6a 2270 SV * const argsv = POPs;
1df70142 2271 const unsigned int func = POPu;
e1ec3a88 2272 const int optype = PL_op->op_type;
159b6efe 2273 GV * const gv = MUTABLE_GV(POPs);
4608196e 2274 IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2275 char *s;
324aa91a 2276 IV retval;
a0d0e21e 2277
748a9306 2278 if (!io || !argsv || !IoIFP(io)) {
51087808 2279 report_evil_fh(gv);
93189314 2280 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
a0d0e21e
LW
2281 RETPUSHUNDEF;
2282 }
2283
748a9306 2284 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2285 STRLEN len;
324aa91a 2286 STRLEN need;
748a9306 2287 s = SvPV_force(argsv, len);
324aa91a
HF
2288 need = IOCPARM_LEN(func);
2289 if (len < need) {
2290 s = Sv_Grow(argsv, need + 1);
2291 SvCUR_set(argsv, need);
a0d0e21e
LW
2292 }
2293
748a9306 2294 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW
2295 }
2296 else {
748a9306 2297 retval = SvIV(argsv);
c529f79d 2298 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW
2299 }
2300
ed4b2e6b 2301 TAINT_PROPER(PL_op_desc[optype]);
a0d0e21e
LW
2302
2303 if (optype == OP_IOCTL)
2304#ifdef HAS_IOCTL
76e3520e 2305 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2306#else
cea2e8a9 2307 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW
2308#endif
2309 else
c214f4ad
B
2310#ifndef HAS_FCNTL
2311 DIE(aTHX_ "fcntl is not implemented");
2312#else
55497cff 2313#if defined(OS2) && defined(__EMX__)
760ac839 2314 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2315#else
760ac839 2316 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2317#endif
6652bd42 2318#endif
a0d0e21e 2319
6652bd42 2320#if defined(HAS_IOCTL) || defined(HAS_FCNTL)
748a9306
LW
2321 if (SvPOK(argsv)) {
2322 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2323 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
53e06cf0 2324 OP_NAME(PL_op));
748a9306
LW
2325 s[SvCUR(argsv)] = 0; /* put our null back */
2326 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW
2327 }
2328
2329 if (retval == -1)
2330 RETPUSHUNDEF;
2331 if (retval != 0) {
2332 PUSHi(retval);
2333 }
2334 else {
8903cb82 2335 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e 2336 }
4808266b 2337#endif
c214f4ad 2338 RETURN;
a0d0e21e
LW
2339}
2340
2341PP(pp_flock)
2342{
9cad6237 2343#ifdef FLOCK
97aff369 2344 dVAR; dSP; dTARGET;
a0d0e21e 2345 I32 value;
7452cf6a 2346 const int argtype = POPi;
1f28cbca 2347 GV * const gv = MUTABLE_GV(POPs);
9c9f25b8
NC
2348 IO *const io = GvIO(gv);
2349 PerlIO *const fp = io ? IoIFP(io) : NULL;
16d20bd9 2350
0bcc34c2 2351 /* XXX Looks to me like io is always NULL at this point */
a0d0e21e 2352 if (fp) {
68dc0745 2353 (void)PerlIO_flush(fp);
76e3520e 2354 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2355 }
cb50131a 2356 else {
51087808 2357 report_evil_fh(gv);
a0d0e21e 2358 value = 0;
93189314 2359 SETERRNO(EBADF,RMS_IFI);
cb50131a 2360 }
a0d0e21e
LW
2361 PUSHi(value);
2362 RETURN;
2363#else
cea2e8a9 2364 DIE(aTHX_ PL_no_func, "flock()");
a0d0e21e
LW
2365#endif
2366}
2367
2368/* Sockets. */
2369
7627e6d0
NC
2370#ifdef HAS_SOCKET
2371
a0d0e21e
LW
2372PP(pp_socket)
2373{
97aff369 2374 dVAR; dSP;
7452cf6a
AL
2375 const int protocol = POPi;
2376 const int type = POPi;
2377 const int domain = POPi;
159b6efe 2378 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2379 IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e
LW
2380 int fd;
2381
9c9f25b8 2382 if (!io) {
51087808 2383 report_evil_fh(gv);
5ee74a84 2384 if (io && IoIFP(io))
c289d2f7 2385 do_close(gv, FALSE);
93189314 2386 SETERRNO(EBADF,LIB_INVARG);
a0d0e21e
LW
2387 RETPUSHUNDEF;
2388 }
2389
57171420
BS
2390 if (IoIFP(io))
2391 do_close(gv, FALSE);
2392
a0d0e21e 2393 TAINT_PROPER("socket");
6ad3d225 2394 fd = PerlSock_socket(domain, type, protocol);
a0d0e21e
LW
2395 if (fd < 0)
2396 RETPUSHUNDEF;
460c8493
IZ
2397 IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2398 IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2399 IoTYPE(io) = IoTYPE_SOCKET;
a0d0e21e 2400 if (!IoIFP(io) || !IoOFP(io)) {
760ac839
LW
2401 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2402 if (IoOFP(io)) PerlIO_close(IoOFP(io));
6ad3d225 2403 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
a0d0e21e
LW
2404 RETPUSHUNDEF;
2405 }
8d2a6795
GS
2406#if defined(HAS_FCNTL) && defined(F_SETFD)
2407 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2408#endif
a0d0e21e 2409
d5ff79b3
OF
2410#ifdef EPOC
2411 setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
2412#endif
2413
a0d0e21e 2414 RETPUSHYES;
a0d0e21e 2415}
7627e6d0 2416#endif
a0d0e21e
LW
2417
2418PP(pp_sockpair)
2419{
c95c94b1 2420#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
97aff369 2421 dVAR; dSP;
7452cf6a
AL
2422 const int protocol = POPi;
2423 const int type = POPi;
2424 const int domain = POPi;
159b6efe
NC
2425 GV * const gv2 = MUTABLE_GV(POPs);
2426 GV * const gv1 = MUTABLE_GV(POPs);
eb578fdb
KW
2427 IO * const io1 = gv1 ? GvIOn(gv1) : NULL;
2428 IO * const io2 = gv2 ? GvIOn(gv2) : NULL;
a0d0e21e
LW
2429 int fd[2];
2430
9c9f25b8
NC
2431 if (!io1)
2432 report_evil_fh(gv1);
2433 if (!io2)
2434 report_evil_fh(gv2);
a0d0e21e 2435
46d2cc54 2436 if (io1 && IoIFP(io1))
dc0d0a5f 2437 do_close(gv1, FALSE);
46d2cc54 2438 if (io2 && IoIFP(io2))
dc0d0a5f 2439 do_close(gv2, FALSE);
57171420 2440
46d2cc54
NC
2441 if (!io1 || !io2)
2442 RETPUSHUNDEF;
2443
a0d0e21e 2444 TAINT_PROPER("socketpair");
6ad3d225 2445 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
a0d0e21e 2446 RETPUSHUNDEF;
460c8493
IZ
2447 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2448 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
50952442 2449 IoTYPE(io1) = IoTYPE_SOCKET;
460c8493
IZ
2450 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2451 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
50952442 2452 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2453 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW
2454 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2455 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2456 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW
2457 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2458 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2459 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW
2460 RETPUSHUNDEF;
2461 }
8d2a6795
GS
2462#if defined(HAS_FCNTL) && defined(F_SETFD)
2463 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2464 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2465#endif
a0d0e21e
LW
2466
2467 RETPUSHYES;
2468#else
cea2e8a9 2469 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW
2470#endif
2471}
2472
7627e6d0
NC
2473#ifdef HAS_SOCKET
2474
a0d0e21e
LW
2475PP(pp_bind)
2476{
97aff369 2477 dVAR; dSP;
7452cf6a 2478 SV * const addrsv = POPs;
349d4f2f
NC
2479 /* OK, so on what platform does bind modify addr? */
2480 const char *addr;
159b6efe 2481 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2482 IO * const io = GvIOn(gv);
a0d0e21e 2483 STRLEN len;
32b81f04 2484 const int op_type = PL_op->op_type;
a0d0e21e
LW
2485
2486 if (!io || !IoIFP(io))
2487 goto nuts;
2488
349d4f2f 2489 addr = SvPV_const(addrsv, len);
32b81f04
NC
2490 TAINT_PROPER(PL_op_desc[op_type]);
2491 if ((op_type == OP_BIND
2492 ? PerlSock_bind(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len)
2493 : PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len))
2494 >= 0)
a0d0e21e
LW
2495 RETPUSHYES;
2496 else
2497 RETPUSHUNDEF;
2498
2499nuts:
fbcda526 2500 report_evil_fh(gv);
93189314 2501 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2502 RETPUSHUNDEF;
a0d0e21e
LW
2503}
2504
2505PP(pp_listen)
2506{
97aff369 2507 dVAR; dSP;
7452cf6a 2508 const int backlog = POPi;
159b6efe 2509 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2510 IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2511
9c9f25b8 2512 if (!io || !IoIFP(io))
a0d0e21e
LW
2513 goto nuts;
2514
6ad3d225 2515 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW
2516 RETPUSHYES;
2517 else
2518 RETPUSHUNDEF;
2519
2520nuts:
fbcda526 2521 report_evil_fh(gv);
93189314 2522 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2523 RETPUSHUNDEF;
a0d0e21e
LW
2524}
2525
2526PP(pp_accept)
2527{
97aff369 2528 dVAR; dSP; dTARGET;
eb578fdb
KW
2529 IO *nstio;
2530 IO *gstio;
93d47a36 2531 char namebuf[MAXPATHLEN];
b5afd346 2532#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
93d47a36
JH
2533 Sock_size_t len = sizeof (struct sockaddr_in);
2534#else
2535 Sock_size_t len = sizeof namebuf;
2536#endif
159b6efe
NC
2537 GV * const ggv = MUTABLE_GV(POPs);
2538 GV * const ngv = MUTABLE_GV(POPs);
a0d0e21e
LW
2539 int fd;
2540
a0d0e21e
LW
2541 if (!ngv)
2542 goto badexit;
2543 if (!ggv)
2544 goto nuts;
2545
2546 gstio = GvIO(ggv);
2547 if (!gstio || !IoIFP(gstio))
2548 goto nuts;
2549
2550 nstio = GvIOn(ngv);
93d47a36 2551 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
e294cc5d
JH
2552#if defined(OEMVS)
2553 if (len == 0) {
2554 /* Some platforms indicate zero length when an AF_UNIX client is
2555 * not bound. Simulate a non-zero-length sockaddr structure in
2556 * this case. */
2557 namebuf[0] = 0; /* sun_len */
2558 namebuf[1] = AF_UNIX; /* sun_family */
2559 len = 2;
2560 }
2561#endif
2562
a0d0e21e
LW
2563 if (fd < 0)
2564 goto badexit;
a70048fb
AB
2565 if (IoIFP(nstio))
2566 do_close(ngv, FALSE);
460c8493
IZ
2567 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2568 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2569 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2570 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW
2571 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2572 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2573 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW
2574 goto badexit;
2575 }
8d2a6795
GS
2576#if defined(HAS_FCNTL) && defined(F_SETFD)
2577 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2578#endif
a0d0e21e 2579
ed79a026 2580#ifdef EPOC
93d47a36 2581 len = sizeof (struct sockaddr_in); /* EPOC somehow truncates info */
a9f1f6b0 2582 setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
ed79a026 2583#endif
381c1bae 2584#ifdef __SCO_VERSION__
93d47a36 2585 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
381c1bae 2586#endif
ed79a026 2587
93d47a36 2588 PUSHp(namebuf, len);
a0d0e21e
LW
2589 RETURN;
2590
2591nuts:
fbcda526 2592 report_evil_fh(ggv);
93189314 2593 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW
2594
2595badexit:
2596 RETPUSHUNDEF;
2597
a0d0e21e
LW
2598}
2599
2600PP(pp_shutdown)
2601{
97aff369 2602 dVAR; dSP; dTARGET;
7452cf6a 2603 const int how = POPi;
159b6efe 2604 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2605 IO * const io = GvIOn(gv);
a0d0e21e
LW
2606
2607 if (!io || !IoIFP(io))
2608 goto nuts;
2609
6ad3d225 2610 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW
2611 RETURN;
2612
2613nuts:
fbcda526 2614 report_evil_fh(gv);
93189314 2615 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2616 RETPUSHUNDEF;
a0d0e21e
LW
2617}
2618
a0d0e21e
LW
2619PP(pp_ssockopt)
2620{
97aff369 2621 dVAR; dSP;
7452cf6a 2622 const int optype = PL_op->op_type;
561b68a9 2623 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
7452cf6a
AL
2624 const unsigned int optname = (unsigned int) POPi;
2625 const unsigned int lvl = (unsigned int) POPi;
159b6efe 2626 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2627 IO * const io = GvIOn(gv);
a0d0e21e 2628 int fd;
1e422769 2629 Sock_size_t len;
a0d0e21e 2630
a0d0e21e
LW
2631 if (!io || !IoIFP(io))
2632 goto nuts;
2633
760ac839 2634 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW
2635 switch (optype) {
2636 case OP_GSOCKOPT:
748a9306 2637 SvGROW(sv, 257);
a0d0e21e 2638 (void)SvPOK_only(sv);
748a9306
LW
2639 SvCUR_set(sv,256);
2640 *SvEND(sv) ='\0';
1e422769 2641 len = SvCUR(sv);
6ad3d225 2642 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2643 goto nuts2;
1e422769 2644 SvCUR_set(sv, len);
748a9306 2645 *SvEND(sv) ='\0';
a0d0e21e
LW
2646 PUSHs(sv);
2647 break;
2648 case OP_SSOCKOPT: {
1215b447
JH
2649#if defined(__SYMBIAN32__)
2650# define SETSOCKOPT_OPTION_VALUE_T void *
2651#else
2652# define SETSOCKOPT_OPTION_VALUE_T const char *
2653#endif
2654 /* XXX TODO: We need to have a proper type (a Configure probe,
2655 * etc.) for what the C headers think of the third argument of
2656 * setsockopt(), the option_value read-only buffer: is it
2657 * a "char *", or a "void *", const or not. Some compilers
2658 * don't take kindly to e.g. assuming that "char *" implicitly
2659 * promotes to a "void *", or to explicitly promoting/demoting
2660 * consts to non/vice versa. The "const void *" is the SUS
2661 * definition, but that does not fly everywhere for the above
2662 * reasons. */
2663 SETSOCKOPT_OPTION_VALUE_T buf;
1e422769
PP
2664 int aint;
2665 if (SvPOKp(sv)) {
2d8e6c8d 2666 STRLEN l;
1215b447 2667 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2d8e6c8d 2668 len = l;
1e422769 2669 }
56ee1660 2670 else {
a0d0e21e 2671 aint = (int)SvIV(sv);
1215b447 2672 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
a0d0e21e
LW
2673 len = sizeof(int);
2674 }
6ad3d225 2675 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2676 goto nuts2;
3280af22 2677 PUSHs(&PL_sv_yes);
a0d0e21e
LW
2678 }
2679 break;
2680 }
2681 RETURN;
2682
2683nuts:
fbcda526 2684 report_evil_fh(gv);
93189314 2685 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW
2686nuts2:
2687 RETPUSHUNDEF;
2688
a0d0e21e
LW
2689}
2690
a0d0e21e
LW
2691PP(pp_getpeername)
2692{
97aff369 2693 dVAR; dSP;
7452cf6a 2694 const int optype = PL_op->op_type;
159b6efe 2695 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2696 IO * const io = GvIOn(gv);
7452cf6a 2697 Sock_size_t len;
a0d0e21e
LW
2698 SV *sv;
2699 int fd;
a0d0e21e
LW
2700
2701 if (!io || !IoIFP(io))
2702 goto nuts;
2703
561b68a9 2704 sv = sv_2mortal(newSV(257));
748a9306 2705 (void)SvPOK_only(sv);
1e422769
PP
2706 len = 256;
2707 SvCUR_set(sv, len);
748a9306 2708 *SvEND(sv) ='\0';
760ac839 2709 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW
2710 switch (optype) {
2711 case OP_GETSOCKNAME:
6ad3d225 2712 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW
2713 goto nuts2;
2714 break;
2715 case OP_GETPEERNAME:
6ad3d225 2716 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2717 goto nuts2;
490ab354
JH
2718#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2719 {
2720 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";
2721 /* If the call succeeded, make sure we don't have a zeroed port/addr */
349d4f2f 2722 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2fbb330f 2723 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
490ab354 2724 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2725 goto nuts2;
490ab354
JH
2726 }
2727 }
2728#endif
a0d0e21e
LW
2729 break;
2730 }
13826f2c
CS
2731#ifdef BOGUS_GETNAME_RETURN
2732 /* Interactive Unix, getpeername() and getsockname()
2733 does not return valid namelen */
1e422769
PP
2734 if (len == BOGUS_GETNAME_RETURN)
2735 len = sizeof(struct sockaddr);
13826f2c 2736#endif
1e422769 2737 SvCUR_set(sv, len);
748a9306 2738 *SvEND(sv) ='\0';
a0d0e21e
LW
2739 PUSHs(sv);
2740 RETURN;
2741
2742nuts:
fbcda526 2743 report_evil_fh(gv);
93189314 2744 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW
2745nuts2:
2746 RETPUSHUNDEF;
7627e6d0 2747}
a0d0e21e 2748
a0d0e21e 2749#endif
a0d0e21e
LW
2750
2751/* Stat calls. */
2752
a0d0e21e
LW
2753PP(pp_stat)
2754{
97aff369 2755 dVAR;
39644a26 2756 dSP;
10edeb5d 2757 GV *gv = NULL;
55dd8d50 2758 IO *io = NULL;
54310121 2759 I32 gimme;
a0d0e21e 2760 I32 max = 13;
109c43ed 2761 SV* sv;
a0d0e21e 2762
109c43ed
FC
2763 if (PL_op->op_flags & OPf_REF ? (gv = cGVOP_gv, 1)
2764 : !!(sv=POPs, gv = MAYBE_DEREF_GV(sv))) {
8a4e5b40 2765 if (PL_op->op_type == OP_LSTAT) {
5d3e98de 2766 if (gv != PL_defgv) {
5d329e6e 2767 do_fstat_warning_check:
a2a5de95 2768 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
93fad930
FC
2769 "lstat() on filehandle%s%"SVf,
2770 gv ? " " : "",
2771 SVfARG(gv
bf29d05f
BF
2772 ? sv_2mortal(newSVhek(GvENAME_HEK(gv)))
2773 : &PL_sv_no));
5d3e98de 2774 } else if (PL_laststype != OP_LSTAT)
b042df57 2775 /* diag_listed_as: The stat preceding %s wasn't an lstat */
8a4e5b40 2776 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
8a4e5b40
DD
2777 }
2778
2dd78f96 2779 if (gv != PL_defgv) {
b8413ac3 2780 bool havefp;
0d5064f1 2781 do_fstat_have_io:
b8413ac3 2782 havefp = FALSE;
3280af22 2783 PL_laststype = OP_STAT;
0d5064f1 2784 PL_statgv = gv ? gv : (GV *)io;
76f68e9b 2785 sv_setpvs(PL_statname, "");
5228a96c 2786 if(gv) {
ad02613c 2787 io = GvIO(gv);
0d5064f1
FC
2788 }
2789 if (io) {
5228a96c
SP
2790 if (IoIFP(io)) {
2791 PL_laststatval =
2792 PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
8080e3c8 2793 havefp = TRUE;
5228a96c 2794 } else if (IoDIRP(io)) {
5228a96c 2795 PL_laststatval =
3497a01f 2796 PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache);
8080e3c8 2797 havefp = TRUE;
5228a96c
SP
2798 } else {
2799 PL_laststatval = -1;
2800 }
5228a96c 2801 }
05bb32d2 2802 else PL_laststatval = -1;
daa30a68 2803 if (PL_laststatval < 0 && !havefp) report_evil_fh(gv);
5228a96c
SP
2804 }
2805
9ddeeac9 2806 if (PL_laststatval < 0) {
a0d0e21e 2807 max = 0;
9ddeeac9 2808 }
a0d0e21e
LW
2809 }
2810 else {
109c43ed 2811 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2812 io = MUTABLE_IO(SvRV(sv));
ad02613c
SP
2813 if (PL_op->op_type == OP_LSTAT)
2814 goto do_fstat_warning_check;
2815 goto do_fstat_have_io;
2816 }
2817
4bac9ae4 2818 SvTAINTED_off(PL_statname); /* previous tainting irrelevant */
109c43ed 2819 sv_setpv(PL_statname, SvPV_nomg_const_nolen(sv));
a0714e2c 2820 PL_statgv = NULL;
533c011a
NIS
2821 PL_laststype = PL_op->op_type;
2822 if (PL_op->op_type == OP_LSTAT)
0510663f 2823 PL_laststatval = PerlLIO_lstat(SvPV_nolen_const(PL_statname), &PL_statcache);
a0d0e21e 2824 else
0510663f 2825 PL_laststatval = PerlLIO_stat(SvPV_nolen_const(PL_statname), &PL_statcache);
3280af22 2826 if (PL_laststatval < 0) {
0510663f 2827 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname), '\n'))
9014280d 2828 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
a0d0e21e
LW
2829 max = 0;
2830 }
2831 }
2832
54310121
PP
2833 gimme = GIMME_V;
2834 if (gimme != G_ARRAY) {
2835 if (gimme != G_VOID)
2836 XPUSHs(boolSV(max));
2837 RETURN;
a0d0e21e
LW
2838 }
2839 if (max) {
36477c24
PP
2840 EXTEND(SP, max);
2841 EXTEND_MORTAL(max);
6e449a3a 2842 mPUSHi(PL_statcache.st_dev);
8d8cba88
TC
2843#if ST_INO_SIZE > IVSIZE
2844 mPUSHn(PL_statcache.st_ino);
2845#else
2846# if ST_INO_SIGN <= 0
6e449a3a 2847 mPUSHi(PL_statcache.st_ino);
8d8cba88
TC
2848# else
2849 mPUSHu(PL_statcache.st_ino);
2850# endif
2851#endif
6e449a3a
MHM
2852 mPUSHu(PL_statcache.st_mode);
2853 mPUSHu(PL_statcache.st_nlink);
146174a9 2854#if Uid_t_size > IVSIZE
6e449a3a 2855 mPUSHn(PL_statcache.st_uid);
146174a9 2856#else
23dcd6c8 2857# if Uid_t_sign <= 0
6e449a3a 2858 mPUSHi(PL_statcache.st_uid);
23dcd6c8 2859# else
6e449a3a 2860 mPUSHu(PL_statcache.st_uid);
23dcd6c8 2861# endif
146174a9 2862#endif
301e8125 2863#if Gid_t_size > IVSIZE
6e449a3a 2864 mPUSHn(PL_statcache.st_gid);
146174a9 2865#else
23dcd6c8 2866# if Gid_t_sign <= 0
6e449a3a 2867 mPUSHi(PL_statcache.st_gid);
23dcd6c8 2868# else
6e449a3a 2869 mPUSHu(PL_statcache.st_gid);
23dcd6c8 2870# endif
146174a9 2871#endif
cbdc8872 2872#ifdef USE_STAT_RDEV
6e449a3a 2873 mPUSHi(PL_statcache.st_rdev);
cbdc8872 2874#else
84bafc02 2875 PUSHs(newSVpvs_flags("", SVs_TEMP));
cbdc8872 2876#endif
146174a9 2877#if Off_t_size > IVSIZE
6e449a3a 2878 mPUSHn(PL_statcache.st_size);
146174a9 2879#else
6e449a3a 2880 mPUSHi(PL_statcache.st_size);
146174a9 2881#endif
cbdc8872 2882#ifdef BIG_TIME
6e449a3a
MHM
2883 mPUSHn(PL_statcache.st_atime);
2884 mPUSHn(PL_statcache.st_mtime);
2885 mPUSHn(PL_statcache.st_ctime);
cbdc8872 2886#else
6e449a3a
MHM
2887 mPUSHi(PL_statcache.st_atime);
2888 mPUSHi(PL_statcache.st_mtime);
2889 mPUSHi(PL_statcache.st_ctime);
cbdc8872 2890#endif
a0d0e21e 2891#ifdef USE_STAT_BLOCKS
6e449a3a
MHM
2892 mPUSHu(PL_statcache.st_blksize);
2893 mPUSHu(PL_statcache.st_blocks);
a0d0e21e 2894#else
84bafc02
NC
2895 PUSHs(newSVpvs_flags("", SVs_TEMP));
2896 PUSHs(newSVpvs_flags("", SVs_TEMP));
a0d0e21e
LW
2897#endif
2898 }
2899 RETURN;
2900}
2901
6c48f025
NC
2902/* All filetest ops avoid manipulating the perl stack pointer in their main
2903 bodies (since commit d2c4d2d1e22d3125), and return using either
2904 S_ft_return_false() or S_ft_return_true(). These two helper functions are
2905 the only two which manipulate the perl stack. To ensure that no stack
2906 manipulation macros are used, the filetest ops avoid defining a local copy
2907 of the stack pointer with dSP. */
2908
8db8f6b6
FC
2909/* If the next filetest is stacked up with this one
2910 (PL_op->op_private & OPpFT_STACKING), we leave
2911 the original argument on the stack for success,
2912 and skip the stacked operators on failure.
2913 The next few macros/functions take care of this.
2914*/
2915
2916static OP *
9a6b02e8 2917S_ft_return_false(pTHX_ SV *ret) {
8db8f6b6 2918 OP *next = NORMAL;
697f9d37
NC
2919 dSP;
2920
226b9201 2921 if (PL_op->op_flags & OPf_REF) XPUSHs(ret);
8db8f6b6
FC
2922 else SETs(ret);
2923 PUTBACK;
697f9d37 2924
9a6b02e8
NC
2925 if (PL_op->op_private & OPpFT_STACKING) {
2926 while (OP_IS_FILETEST(next->op_type)
2927 && next->op_private & OPpFT_STACKED)
2928 next = next->op_next;
2929 }
8db8f6b6
FC
2930 return next;
2931}
2932
07ed4d4b
NC
2933PERL_STATIC_INLINE OP *
2934S_ft_return_true(pTHX_ SV *ret) {
2935 dSP;
2936 if (PL_op->op_flags & OPf_REF)
2937 XPUSHs(PL_op->op_private & OPpFT_STACKING ? (SV *)cGVOP_gv : (ret));
2938 else if (!(PL_op->op_private & OPpFT_STACKING))
2939 SETs(ret);
2940 PUTBACK;
2941 return NORMAL;
2942}
8db8f6b6 2943
48d023d6
NC
2944#define FT_RETURNNO return S_ft_return_false(aTHX_ &PL_sv_no)
2945#define FT_RETURNUNDEF return S_ft_return_false(aTHX_ &PL_sv_undef)
2946#define FT_RETURNYES return S_ft_return_true(aTHX_ &PL_sv_yes)
8db8f6b6 2947
6f1401dc 2948#define tryAMAGICftest_MG(chr) STMT_START { \
d2f67720 2949 if ( (SvFLAGS(*PL_stack_sp) & (SVf_ROK|SVs_GMG)) \
8db8f6b6
FC
2950 && PL_op->op_flags & OPf_KIDS) { \
2951 OP *next = S_try_amagic_ftest(aTHX_ chr); \
2952 if (next) return next; \
2953 } \
6f1401dc
DM
2954 } STMT_END
2955
8db8f6b6 2956STATIC OP *
6f1401dc
DM
2957S_try_amagic_ftest(pTHX_ char chr) {
2958 dVAR;
d2f67720 2959 SV *const arg = *PL_stack_sp;
6f1401dc
DM
2960
2961 assert(chr != '?');
c5780028 2962 if (!(PL_op->op_private & OPpFT_STACKING)) SvGETMAGIC(arg);
6f1401dc 2963
d2f67720 2964 if (SvAMAGIC(arg))
6f1401dc
DM
2965 {
2966 const char tmpchr = chr;
6f1401dc
DM
2967 SV * const tmpsv = amagic_call(arg,
2968 newSVpvn_flags(&tmpchr, 1, SVs_TEMP),
2969 ftest_amg, AMGf_unary);
2970
2971 if (!tmpsv)
8db8f6b6 2972 return NULL;
6f1401dc 2973
48d023d6
NC
2974 return SvTRUE(tmpsv)
2975 ? S_ft_return_true(aTHX_ tmpsv) : S_ft_return_false(aTHX_ tmpsv);
6f1401dc 2976 }
8db8f6b6 2977 return NULL;
6f1401dc
DM
2978}
2979
2980
a0d0e21e
LW
2981PP(pp_ftrread)
2982{
97aff369 2983 dVAR;
9cad6237 2984 I32 result;
af9e49b4
NC
2985 /* Not const, because things tweak this below. Not bool, because there's
2986 no guarantee that OPp_FT_ACCESS is <= CHAR_MAX */
2987#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2988 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
2989 /* Giving some sort of initial value silences compilers. */
2990# ifdef R_OK
2991 int access_mode = R_OK;
2992# else
2993 int access_mode = 0;
2994# endif
5ff3f7a4 2995#else
af9e49b4
NC
2996 /* access_mode is never used, but leaving use_access in makes the
2997 conditional compiling below much clearer. */
2998 I32 use_access = 0;
5ff3f7a4 2999#endif
2dcac756 3000 Mode_t stat_mode = S_IRUSR;
a0d0e21e 3001
af9e49b4 3002 bool effective = FALSE;
07fe7c6a 3003 char opchar = '?';
af9e49b4 3004
7fb13887
BM
3005 switch (PL_op->op_type) {
3006 case OP_FTRREAD: opchar = 'R'; break;
3007 case OP_FTRWRITE: opchar = 'W'; break;
3008 case OP_FTREXEC: opchar = 'X'; break;
3009 case OP_FTEREAD: opchar = 'r'; break;
3010 case OP_FTEWRITE: opchar = 'w'; break;
3011 case OP_FTEEXEC: opchar = 'x'; break;
3012 }
6f1401dc 3013 tryAMAGICftest_MG(opchar);
7fb13887 3014
af9e49b4
NC
3015 switch (PL_op->op_type) {
3016 case OP_FTRREAD:
3017#if !(defined(HAS_ACCESS) && defined(R_OK))
3018 use_access = 0;
3019#endif
3020 break;
3021
3022 case OP_FTRWRITE:
5ff3f7a4 3023#if defined(HAS_ACCESS) && defined(W_OK)
af9e49b4 3024 access_mode = W_OK;
5ff3f7a4 3025#else
af9e49b4 3026 use_access = 0;
5ff3f7a4 3027#endif
af9e49b4
NC
3028 stat_mode = S_IWUSR;
3029 break;
a0d0e21e 3030
af9e49b4 3031 case OP_FTREXEC:
5ff3f7a4 3032#if defined(HAS_ACCESS) && defined(X_OK)
af9e49b4 3033 access_mode = X_OK;
5ff3f7a4 3034#else
af9e49b4 3035 use_access = 0;
5ff3f7a4 3036#endif
af9e49b4
NC
3037 stat_mode = S_IXUSR;
3038 break;
a0d0e21e 3039
af9e49b4 3040 case OP_FTEWRITE:
faee0e31 3041#ifdef PERL_EFF_ACCESS
af9e49b4 3042 access_mode = W_OK;
5ff3f7a4 3043#endif
af9e49b4 3044 stat_mode = S_IWUSR;
7fb13887 3045 /* fall through */
a0d0e21e 3046
af9e49b4
NC
3047 case OP_FTEREAD:
3048#ifndef PERL_EFF_ACCESS
3049 use_access = 0;
3050#endif
3051 effective = TRUE;
3052 break;
3053
af9e49b4 3054 case OP_FTEEXEC:
faee0e31 3055#ifdef PERL_EFF_ACCESS
b376053d 3056 access_mode = X_OK;
5ff3f7a4 3057#else
af9e49b4 3058 use_access = 0;
5ff3f7a4 3059#endif
af9e49b4
NC
3060 stat_mode = S_IXUSR;
3061 effective = TRUE;
3062 break;
3063 }
a0d0e21e 3064
af9e49b4
NC
3065 if (use_access) {
3066#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
d2f67720 3067 const char *name = SvPV_nolen(*PL_stack_sp);
af9e49b4
NC
3068 if (effective) {
3069# ifdef PERL_EFF_ACCESS
3070 result = PERL_EFF_ACCESS(name, access_mode);
3071# else
3072 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
3073 OP_NAME(PL_op));
3074# endif
3075 }
3076 else {
3077# ifdef HAS_ACCESS
3078 result = access(name, access_mode);
3079# else
3080 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
3081# endif
3082 }
5ff3f7a4 3083 if (result == 0)
d2c4d2d1 3084 FT_RETURNYES;
5ff3f7a4 3085 if (result < 0)
d2c4d2d1
FC
3086 FT_RETURNUNDEF;
3087 FT_RETURNNO;
af9e49b4 3088#endif
22865c03 3089 }
af9e49b4 3090
40c852de 3091 result = my_stat_flags(0);
a0d0e21e 3092 if (result < 0)
8db8f6b6 3093 FT_RETURNUNDEF;
af9e49b4 3094 if (cando(stat_mode, effective, &PL_statcache))
8db8f6b6
FC
3095 FT_RETURNYES;
3096 FT_RETURNNO;
a0d0e21e
LW
3097}
3098
3099PP(pp_ftis)
3100{
97aff369 3101 dVAR;
fbb0b3b3 3102 I32 result;
d7f0a2f4 3103 const int op_type = PL_op->op_type;
07fe7c6a 3104 char opchar = '?';
07fe7c6a
BM
3105
3106 switch (op_type) {
3107 case OP_FTIS: opchar = 'e'; break;
3108 case OP_FTSIZE: opchar = 's'; break;
3109 case OP_FTMTIME: opchar = 'M'; break;
3110 case OP_FTCTIME: opchar = 'C'; break;
3111 case OP_FTATIME: opchar = 'A'; break;
3112 }
6f1401dc 3113 tryAMAGICftest_MG(opchar);
07fe7c6a 3114
40c852de 3115 result = my_stat_flags(0);
a0d0e21e 3116 if (result < 0)
8db8f6b6 3117 FT_RETURNUNDEF;
d7f0a2f4 3118 if (op_type == OP_FTIS)
8db8f6b6 3119 FT_RETURNYES;
957b0e1d 3120 {
d7f0a2f4
NC
3121 /* You can't dTARGET inside OP_FTIS, because you'll get
3122 "panic: pad_sv po" - the op is not flagged to have a target. */
957b0e1d 3123 dTARGET;
d7f0a2f4 3124 switch (op_type) {
957b0e1d
NC
3125 case OP_FTSIZE:
3126#if Off_t_size > IVSIZE
8db8f6b6 3127 sv_setnv(TARG, (NV)PL_statcache.st_size);
957b0e1d 3128#else
8db8f6b6 3129 sv_setiv(TARG, (IV)PL_statcache.st_size);
957b0e1d
NC
3130#endif
3131 break;
3132 case OP_FTMTIME:
8db8f6b6
FC
3133 sv_setnv(TARG,
3134 ((NV)PL_basetime - PL_statcache.st_mtime) / 86400.0 );
957b0e1d
NC
3135 break;
3136 case OP_FTATIME:
8db8f6b6
FC
3137 sv_setnv(TARG,
3138 ((NV)PL_basetime - PL_statcache.st_atime) / 86400.0 );
957b0e1d
NC
3139 break;
3140 case OP_FTCTIME:
8db8f6b6
FC
3141 sv_setnv(TARG,
3142 ((NV)PL_basetime - PL_statcache.st_ctime) / 86400.0 );
957b0e1d
NC
3143 break;
3144 }
8db8f6b6 3145 SvSETMAGIC(TARG);
48d023d6
NC
3146 return SvTRUE_nomg(TARG)
3147 ? S_ft_return_true(aTHX_ TARG) : S_ft_return_false(aTHX_ TARG);
957b0e1d 3148 }
a0d0e21e
LW
3149}
3150
a0d0e21e
LW
3151PP(pp_ftrowned)
3152{
97aff369 3153 dVAR;
fbb0b3b3 3154 I32 result;
07fe7c6a 3155 char opchar = '?';
17ad201a 3156
7fb13887
BM
3157 switch (PL_op->op_type) {
3158 case OP_FTROWNED: opchar = 'O'; break;
3159 case OP_FTEOWNED: opchar = 'o'; break;
3160 case OP_FTZERO: opchar = 'z'; break;
3161 case OP_FTSOCK: opchar = 'S'; break;
3162 case OP_FTCHR: opchar = 'c'; break;
3163 case OP_FTBLK: opchar = 'b'; break;
3164 case OP_FTFILE: opchar = 'f'; break;
3165 case OP_FTDIR: opchar = 'd'; break;
3166 case OP_FTPIPE: opchar = 'p'; break;
3167 case OP_FTSUID: opchar = 'u'; break;
3168 case OP_FTSGID: opchar = 'g'; break;
3169 case OP_FTSVTX: opchar = 'k'; break;
3170 }
6f1401dc 3171 tryAMAGICftest_MG(opchar);
7fb13887 3172
17ad201a
NC
3173 /* I believe that all these three are likely to be defined on most every
3174 system these days. */
3175#ifndef S_ISUID
c410dd6a 3176 if(PL_op->op_type == OP_FTSUID) {
8db8f6b6 3177 FT_RETURNNO;
c410dd6a 3178 }
17ad201a
NC
3179#endif
3180#ifndef S_ISGID
c410dd6a 3181 if(PL_op->op_type == OP_FTSGID) {
8db8f6b6 3182 FT_RETURNNO;
c410dd6a 3183 }
17ad201a
NC
3184#endif
3185#ifndef S_ISVTX
c410dd6a 3186 if(PL_op->op_type == OP_FTSVTX) {
8db8f6b6 3187 FT_RETURNNO;
c410dd6a 3188 }
17ad201a
NC
3189#endif
3190
40c852de 3191 result = my_stat_flags(0);
a0d0e21e 3192 if (result < 0)
8db8f6b6 3193 FT_RETURNUNDEF;
f1cb2d48
NC
3194 switch (PL_op->op_type) {
3195 case OP_FTROWNED:
985213f2 3196 if (PL_statcache.st_uid == PerlProc_getuid())
8db8f6b6 3197 FT_RETURNYES;
f1cb2d48
NC
3198 break;
3199 case OP_FTEOWNED:
985213f2 3200 if (PL_statcache.st_uid == PerlProc_geteuid())
8db8f6b6 3201 FT_RETURNYES;
f1cb2d48
NC
3202 break;
3203 case OP_FTZERO:
3204 if (PL_statcache.st_size == 0)
8db8f6b6 3205 FT_RETURNYES;
f1cb2d48
NC
3206 break;
3207 case OP_FTSOCK:
3208 if (S_ISSOCK(PL_statcache.st_mode))
8db8f6b6 3209 FT_RETURNYES;
f1cb2d48
NC
3210 break;
3211 case OP_FTCHR:
3212 if (S_ISCHR(PL_statcache.st_mode))
8db8f6b6 3213 FT_RETURNYES;
f1cb2d48
NC
3214 break;
3215 case OP_FTBLK:
3216 if (S_ISBLK(PL_statcache.st_mode))
8db8f6b6 3217 FT_RETURNYES;
f1cb2d48
NC
3218 break;
3219 case OP_FTFILE:
3220 if (S_ISREG(PL_statcache.st_mode))
8db8f6b6 3221 FT_RETURNYES;
f1cb2d48
NC
3222 break;
3223 case OP_FTDIR:
3224 if (S_ISDIR(PL_statcache.st_mode))
8db8f6b6 3225 FT_RETURNYES;
f1cb2d48
NC
3226 break;
3227 case OP_FTPIPE:
3228 if (S_ISFIFO(PL_statcache.st_mode))
8db8f6b6 3229 FT_RETURNYES;
f1cb2d48 3230 break;
a0d0e21e 3231#ifdef S_ISUID
17ad201a
NC
3232 case OP_FTSUID:
3233 if (PL_statcache.st_mode & S_ISUID)
8db8f6b6 3234 FT_RETURNYES;
17ad201a 3235 break;
a0d0e21e 3236#endif
a0d0e21e 3237#ifdef S_ISGID
17ad201a
NC
3238 case OP_FTSGID:
3239 if (PL_statcache.st_mode & S_ISGID)
8db8f6b6 3240 FT_RETURNYES;
17ad201a
NC
3241 break;
3242#endif
3243#ifdef S_ISVTX
3244 case OP_FTSVTX:
3245 if (PL_statcache.st_mode & S_ISVTX)
8db8f6b6 3246 FT_RETURNYES;
17ad201a 3247 break;
a0d0e21e 3248#endif
17ad201a 3249 }
8db8f6b6 3250 FT_RETURNNO;
a0d0e21e
LW
3251}
3252
17ad201a 3253PP(pp_ftlink)
a0d0e21e 3254{
97aff369 3255 dVAR;
500ff13f 3256 I32 result;
07fe7c6a 3257
6f1401dc 3258 tryAMAGICftest_MG('l');
40c852de 3259 result = my_lstat_flags(0);
500ff13f 3260
a0d0e21e 3261 if (result < 0)
8db8f6b6 3262 FT_RETURNUNDEF;
17ad201a 3263 if (S_ISLNK(PL_statcache.st_mode))
8db8f6b6
FC
3264 FT_RETURNYES;
3265 FT_RETURNNO;
a0d0e21e
LW
3266}
3267
3268PP(pp_fttty)
3269{
97aff369 3270 dVAR;
a0d0e21e
LW
3271 int fd;
3272 GV *gv;
0784aae0 3273 char *name = NULL;
40c852de 3274 STRLEN namelen;
fb73857a 3275
6f1401dc 3276 tryAMAGICftest_MG('t');
07fe7c6a 3277
533c011a 3278 if (PL_op->op_flags & OPf_REF)
146174a9 3279 gv = cGVOP_gv;
e5e154d2 3280 else {
d2f67720 3281 SV *tmpsv = *PL_stack_sp;
e5e154d2 3282 if (!(gv = MAYBE_DEREF_GV_nomg(tmpsv))) {
40c852de
DM
3283 name = SvPV_nomg(tmpsv, namelen);
3284 gv = gv_fetchpvn_flags(name, namelen, SvUTF8(tmpsv), SVt_PVIO);
e5e154d2 3285 }
40c852de 3286 }
fb73857a 3287
a0d0e21e 3288 if (GvIO(gv) && IoIFP(GvIOp(gv)))
760ac839 3289 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
b6cb94c5 3290 else if (name && isDIGIT(*name))
40c852de 3291 fd = atoi(name);
a0d0e21e 3292 else
8db8f6b6 3293 FT_RETURNUNDEF;
6ad3d225 3294 if (PerlLIO_isatty(fd))
8db8f6b6
FC
3295 FT_RETURNYES;
3296 FT_RETURNNO;
a0d0e21e
LW
3297}
3298
a0d0e21e
LW
3299PP(pp_fttext)
3300{
97aff369 3301 dVAR;
a0d0e21e
LW
3302 I32 i;
3303 I32 len;
3304 I32 odd = 0;
3305 STDCHAR tbuf[512];
eb578fdb
KW
3306 STDCHAR *s;
3307 IO *io;
3308 SV *sv = NULL;
5f05dabc 3309 GV *gv;
146174a9 3310 PerlIO *fp;
a0d0e21e 3311
6f1401dc 3312 tryAMAGICftest_MG(PL_op->op_type == OP_FTTEXT ? 'T' : 'B');
07fe7c6a 3313
533c011a 3314 if (PL_op->op_flags & OPf_REF)
146174a9 3315 gv = cGVOP_gv;
d2c4d2d1 3316 else if ((PL_op->op_private & (OPpFT_STACKED|OPpFT_AFTER_t))
8db8f6b6 3317 == OPpFT_STACKED)
ba8182f8 3318 gv = PL_defgv;
d2c4d2d1 3319 else {
d2f67720 3320 sv = *PL_stack_sp;
d2c4d2d1 3321 gv = MAYBE_DEREF_GV_nomg(sv);
8db8f6b6 3322 }
5f05dabc
PP
3323
3324 if (gv) {
3280af22
NIS
3325 if (gv == PL_defgv) {
3326 if (PL_statgv)
bd5f6c01
FC
3327 io = SvTYPE(PL_statgv) == SVt_PVIO
3328 ? (IO *)PL_statgv
3329 : GvIO(PL_statgv);
a0d0e21e 3330 else {
a0d0e21e
LW
3331 goto really_filename;
3332 }
3333 }
3334 else {
3280af22 3335 PL_statgv = gv;
76f68e9b 3336 sv_setpvs(PL_statname, "");
3280af22 3337 io = GvIO(PL_statgv);
a0d0e21e 3338 }
eb4c377a 3339 PL_laststatval = -1;
21a64c3e 3340 PL_laststype = OP_STAT;
a0d0e21e 3341 if (io && IoIFP(io)) {
5f05dabc 3342 if (! PerlIO_has_base(IoIFP(io)))
cea2e8a9 3343 DIE(aTHX_ "-T and -B not implemented on filehandles");
3280af22
NIS
3344 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3345 if (PL_laststatval < 0)
8db8f6b6 3346 FT_RETURNUNDEF;
9cbac4c7 3347 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
533c011a 3348 if (PL_op->op_type == OP_FTTEXT)
8db8f6b6 3349 FT_RETURNNO;
a0d0e21e 3350 else
8db8f6b6 3351 FT_RETURNYES;
9cbac4c7 3352 }
a20bf0c3 3353 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
760ac839 3354 i = PerlIO_getc(IoIFP(io));
a0d0e21e 3355 if (i != EOF)
760ac839 3356 (void)PerlIO_ungetc(IoIFP(io),i);
a0d0e21e 3357 }
a20bf0c3 3358 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
8db8f6b6 3359 FT_RETURNYES;
a20bf0c3
JH
3360 len = PerlIO_get_bufsiz(IoIFP(io));
3361 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
760ac839
LW
3362 /* sfio can have large buffers - limit to 512 */
3363 if (len > 512)
3364 len = 512;
a0d0e21e
LW
3365 }
3366 else {
2ad48547 3367 SETERRNO(EBADF,RMS_IFI);