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Stop making assumptions about uids and gids.
[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;
9423a867
FC
362 GV * const gv = (PL_op->op_flags & OPf_SPECIAL) ? NULL : (GV *)POPs;
363
364 PUTBACK;
365
151cea25
FC
366 /* make a copy of the pattern if it is gmagical, to ensure that magic
367 * is called once and only once */
9423a867 368 if (SvGMAGICAL(TOPs)) TOPs = sv_2mortal(newSVsv(TOPs));
9426e1a5 369
fc99edcf 370 tryAMAGICunTARGETlist(iter_amg, (PL_op->op_flags & OPf_SPECIAL));
d1bea3d8
DM
371
372 if (PL_op->op_flags & OPf_SPECIAL) {
373 /* call Perl-level glob function instead. Stack args are:
9423a867 374 * MARK, wildcard
d1bea3d8
DM
375 * and following OPs should be: gv(CORE::GLOBAL::glob), entersub
376 * */
377 return NORMAL;
378 }
d67594ff 379 if (PL_globhook) {
d67594ff
FC
380 PL_globhook(aTHX);
381 return NORMAL;
382 }
f5284f61 383
71686f12
GS
384 /* Note that we only ever get here if File::Glob fails to load
385 * without at the same time croaking, for some reason, or if
386 * perl was built with PERL_EXTERNAL_GLOB */
387
d343c3ef 388 ENTER_with_name("glob");
a0d0e21e 389
c90c0ff4 390#ifndef VMS
284167a5 391 if (TAINTING_get) {
7bac28a0
PP
392 /*
393 * The external globbing program may use things we can't control,
394 * so for security reasons we must assume the worst.
395 */
396 TAINT;
22c35a8c 397 taint_proper(PL_no_security, "glob");
7bac28a0 398 }
c90c0ff4 399#endif /* !VMS */
7bac28a0 400
3280af22 401 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
9423a867 402 PL_last_in_gv = gv;
a0d0e21e 403
3280af22 404 SAVESPTR(PL_rs); /* This is not permanent, either. */
84bafc02 405 PL_rs = newSVpvs_flags("\000", SVs_TEMP);
c07a80fd
PP
406#ifndef DOSISH
407#ifndef CSH
6b88bc9c 408 *SvPVX(PL_rs) = '\n';
a0d0e21e 409#endif /* !CSH */
55497cff 410#endif /* !DOSISH */
c07a80fd 411
a0d0e21e 412 result = do_readline();
d343c3ef 413 LEAVE_with_name("glob");
a0d0e21e
LW
414 return result;
415}
416
a0d0e21e
LW
417PP(pp_rcatline)
418{
97aff369 419 dVAR;
146174a9 420 PL_last_in_gv = cGVOP_gv;
a0d0e21e
LW
421 return do_readline();
422}
423
424PP(pp_warn)
425{
97aff369 426 dVAR; dSP; dMARK;
c5df3096 427 SV *exsv;
06bf62c7 428 STRLEN len;
b59aed67 429 if (SP - MARK > 1) {
a0d0e21e 430 dTARGET;
3280af22 431 do_join(TARG, &PL_sv_no, MARK, SP);
c5df3096 432 exsv = TARG;
a0d0e21e
LW
433 SP = MARK + 1;
434 }
b59aed67 435 else if (SP == MARK) {
c5df3096 436 exsv = &PL_sv_no;
b59aed67 437 EXTEND(SP, 1);
83f957ec 438 SP = MARK + 1;
b59aed67 439 }
a0d0e21e 440 else {
c5df3096 441 exsv = TOPs;
ef5fe392 442 if (SvGMAGICAL(exsv)) exsv = sv_mortalcopy(exsv);
a0d0e21e 443 }
06bf62c7 444
72d74926 445 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
c5df3096
Z
446 /* well-formed exception supplied */
447 }
c5df3096 448 else {
eed484f9
DD
449 SV * const errsv = ERRSV;
450 SvGETMAGIC(errsv);
451 if (SvROK(errsv)) {
452 if (SvGMAGICAL(errsv)) {
ef5fe392 453 exsv = sv_newmortal();
eed484f9 454 sv_setsv_nomg(exsv, errsv);
ef5fe392 455 }
eed484f9 456 else exsv = errsv;
ef5fe392 457 }
eed484f9 458 else if (SvPOKp(errsv) ? SvCUR(errsv) : SvNIOKp(errsv)) {
ef5fe392 459 exsv = sv_newmortal();
eed484f9 460 sv_setsv_nomg(exsv, errsv);
ef5fe392
FC
461 sv_catpvs(exsv, "\t...caught");
462 }
463 else {
c5df3096 464 exsv = newSVpvs_flags("Warning: something's wrong", SVs_TEMP);
ef5fe392 465 }
c5df3096 466 }
3b7f69a5
FC
467 if (SvROK(exsv) && !PL_warnhook)
468 Perl_warn(aTHX_ "%"SVf, SVfARG(exsv));
469 else warn_sv(exsv);
a0d0e21e
LW
470 RETSETYES;
471}
472
473PP(pp_die)
474{
97aff369 475 dVAR; dSP; dMARK;
c5df3096 476 SV *exsv;
06bf62c7 477 STRLEN len;
96e176bf
CL
478#ifdef VMS
479 VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
480#endif
a0d0e21e
LW
481 if (SP - MARK != 1) {
482 dTARGET;
3280af22 483 do_join(TARG, &PL_sv_no, MARK, SP);
c5df3096 484 exsv = TARG;
a0d0e21e
LW
485 SP = MARK + 1;
486 }
487 else {
c5df3096 488 exsv = TOPs;
a0d0e21e 489 }
c5df3096 490
72d74926 491 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
c5df3096
Z
492 /* well-formed exception supplied */
493 }
eed484f9
DD
494 else {
495 SV * const errsv = ERRSV;
8b3945e7 496 SvGETMAGIC(errsv);
eed484f9
DD
497 if (SvROK(errsv)) {
498 exsv = errsv;
499 if (sv_isobject(exsv)) {
500 HV * const stash = SvSTASH(SvRV(exsv));
501 GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
502 if (gv) {
503 SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
504 SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
505 EXTEND(SP, 3);
506 PUSHMARK(SP);
507 PUSHs(exsv);
508 PUSHs(file);
509 PUSHs(line);
510 PUTBACK;
511 call_sv(MUTABLE_SV(GvCV(gv)),
512 G_SCALAR|G_EVAL|G_KEEPERR);
513 exsv = sv_mortalcopy(*PL_stack_sp--);
514 }
05423cc9 515 }
4e6ea2c3 516 }
8b3945e7 517 else if (SvPOK(errsv) && SvCUR(errsv)) {
eed484f9
DD
518 exsv = sv_mortalcopy(errsv);
519 sv_catpvs(exsv, "\t...propagated");
520 }
521 else {
522 exsv = newSVpvs_flags("Died", SVs_TEMP);
523 }
c5df3096 524 }
9fed9930 525 return die_sv(exsv);
a0d0e21e
LW
526}
527
528/* I/O. */
529
d682515d
NC
530OP *
531Perl_tied_method(pTHX_ const char *const methname, SV **sp, SV *const sv,
532 const MAGIC *const mg, const U32 flags, U32 argc, ...)
6bcca55b 533{
d8ef3a16
DM
534 SV **orig_sp = sp;
535 I32 ret_args;
536
d682515d 537 PERL_ARGS_ASSERT_TIED_METHOD;
6bcca55b
NC
538
539 /* Ensure that our flag bits do not overlap. */
d682515d
NC
540 assert((TIED_METHOD_MORTALIZE_NOT_NEEDED & G_WANT) == 0);
541 assert((TIED_METHOD_ARGUMENTS_ON_STACK & G_WANT) == 0);
94bc412f 542 assert((TIED_METHOD_SAY & G_WANT) == 0);
6bcca55b 543
d8ef3a16
DM
544 PUTBACK; /* sp is at *foot* of args, so this pops args from old stack */
545 PUSHSTACKi(PERLSI_MAGIC);
546 EXTEND(SP, argc+1); /* object + args */
6bcca55b 547 PUSHMARK(sp);
d682515d 548 PUSHs(SvTIED_obj(sv, mg));
d8ef3a16
DM
549 if (flags & TIED_METHOD_ARGUMENTS_ON_STACK) {
550 Copy(orig_sp + 2, sp + 1, argc, SV*); /* copy args to new stack */
1a8c1d59 551 sp += argc;
d8ef3a16 552 }
1a8c1d59 553 else if (argc) {
d682515d
NC
554 const U32 mortalize_not_needed
555 = flags & TIED_METHOD_MORTALIZE_NOT_NEEDED;
6bcca55b 556 va_list args;
0d5509eb 557 va_start(args, argc);
6bcca55b
NC
558 do {
559 SV *const arg = va_arg(args, SV *);
560 if(mortalize_not_needed)
561 PUSHs(arg);
562 else
563 mPUSHs(arg);
564 } while (--argc);
565 va_end(args);
566 }
567
568 PUTBACK;
d682515d 569 ENTER_with_name("call_tied_method");
94bc412f
NC
570 if (flags & TIED_METHOD_SAY) {
571 /* local $\ = "\n" */
572 SAVEGENERICSV(PL_ors_sv);
573 PL_ors_sv = newSVpvs("\n");
574 }
d8ef3a16
DM
575 ret_args = call_method(methname, flags & G_WANT);
576 SPAGAIN;
577 orig_sp = sp;
578 POPSTACK;
579 SPAGAIN;
580 if (ret_args) { /* copy results back to original stack */
581 EXTEND(sp, ret_args);
582 Copy(orig_sp - ret_args + 1, sp + 1, ret_args, SV*);
583 sp += ret_args;
584 PUTBACK;
585 }
d682515d 586 LEAVE_with_name("call_tied_method");
6bcca55b
NC
587 return NORMAL;
588}
589
d682515d
NC
590#define tied_method0(a,b,c,d) \
591 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,0)
592#define tied_method1(a,b,c,d,e) \
593 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,1,e)
594#define tied_method2(a,b,c,d,e,f) \
595 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,2,e,f)
6bcca55b 596
a0d0e21e
LW
597PP(pp_open)
598{
27da23d5 599 dVAR; dSP;
a567e93b
NIS
600 dMARK; dORIGMARK;
601 dTARGET;
a0d0e21e 602 SV *sv;
5b468f54 603 IO *io;
5c144d81 604 const char *tmps;
a0d0e21e 605 STRLEN len;
a567e93b 606 bool ok;
a0d0e21e 607
159b6efe 608 GV * const gv = MUTABLE_GV(*++MARK);
c4420975 609
13be902c 610 if (!isGV(gv) && !(SvTYPE(gv) == SVt_PVLV && isGV_with_GP(gv)))
cea2e8a9 611 DIE(aTHX_ PL_no_usym, "filehandle");
abc718f2 612
a79db61d 613 if ((io = GvIOp(gv))) {
a5e1d062 614 const MAGIC *mg;
36477c24 615 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
853846ea 616
a2a5de95 617 if (IoDIRP(io))
d1d15184 618 Perl_ck_warner_d(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
d0c0e7dd
FC
619 "Opening dirhandle %"HEKf" also as a file",
620 HEKfARG(GvENAME_HEK(gv)));
abc718f2 621
ad64d0ec 622 mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
c4420975
AL
623 if (mg) {
624 /* Method's args are same as ours ... */
625 /* ... except handle is replaced by the object */
d682515d
NC
626 return Perl_tied_method(aTHX_ "OPEN", mark - 1, MUTABLE_SV(io), mg,
627 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
628 sp - mark);
c4420975 629 }
4592e6ca
NIS
630 }
631
a567e93b
NIS
632 if (MARK < SP) {
633 sv = *++MARK;
634 }
635 else {
35a08ec7 636 sv = GvSVn(gv);
a567e93b
NIS
637 }
638
5c144d81 639 tmps = SvPV_const(sv, len);
4608196e 640 ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, NULL, MARK+1, (SP-MARK));
a567e93b
NIS
641 SP = ORIGMARK;
642 if (ok)
3280af22
NIS
643 PUSHi( (I32)PL_forkprocess );
644 else if (PL_forkprocess == 0) /* we are a new child */
a0d0e21e
LW
645 PUSHi(0);
646 else
647 RETPUSHUNDEF;
648 RETURN;
649}
650
651PP(pp_close)
652{
27da23d5 653 dVAR; dSP;
30901a8a
FC
654 GV * const gv =
655 MAXARG == 0 || (!TOPs && !POPs) ? PL_defoutgv : MUTABLE_GV(POPs);
1d603a67 656
2addaaf3
NC
657 if (MAXARG == 0)
658 EXTEND(SP, 1);
659
a79db61d
AL
660 if (gv) {
661 IO * const io = GvIO(gv);
662 if (io) {
a5e1d062 663 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 664 if (mg) {
d682515d 665 return tied_method0("CLOSE", SP, MUTABLE_SV(io), mg);
a79db61d
AL
666 }
667 }
1d603a67 668 }
54310121 669 PUSHs(boolSV(do_close(gv, TRUE)));
a0d0e21e
LW
670 RETURN;
671}
672
673PP(pp_pipe_op)
674{
a0d0e21e 675#ifdef HAS_PIPE
97aff369 676 dVAR;
9cad6237 677 dSP;
eb578fdb
KW
678 IO *rstio;
679 IO *wstio;
a0d0e21e
LW
680 int fd[2];
681
159b6efe
NC
682 GV * const wgv = MUTABLE_GV(POPs);
683 GV * const rgv = MUTABLE_GV(POPs);
a0d0e21e
LW
684
685 if (!rgv || !wgv)
686 goto badexit;
687
6e592b3a 688 if (!isGV_with_GP(rgv) || !isGV_with_GP(wgv))
cea2e8a9 689 DIE(aTHX_ PL_no_usym, "filehandle");
a0d0e21e
LW
690 rstio = GvIOn(rgv);
691 wstio = GvIOn(wgv);
692
693 if (IoIFP(rstio))
694 do_close(rgv, FALSE);
695 if (IoIFP(wstio))
696 do_close(wgv, FALSE);
697
6ad3d225 698 if (PerlProc_pipe(fd) < 0)
a0d0e21e
LW
699 goto badexit;
700
460c8493
IZ
701 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
702 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
b5ac89c3 703 IoOFP(rstio) = IoIFP(rstio);
a0d0e21e 704 IoIFP(wstio) = IoOFP(wstio);
50952442
JH
705 IoTYPE(rstio) = IoTYPE_RDONLY;
706 IoTYPE(wstio) = IoTYPE_WRONLY;
a0d0e21e
LW
707
708 if (!IoIFP(rstio) || !IoOFP(wstio)) {
a79db61d
AL
709 if (IoIFP(rstio))
710 PerlIO_close(IoIFP(rstio));
711 else
712 PerlLIO_close(fd[0]);
713 if (IoOFP(wstio))
714 PerlIO_close(IoOFP(wstio));
715 else
716 PerlLIO_close(fd[1]);
a0d0e21e
LW
717 goto badexit;
718 }
4771b018
GS
719#if defined(HAS_FCNTL) && defined(F_SETFD)
720 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
721 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
722#endif
a0d0e21e
LW
723 RETPUSHYES;
724
725badexit:
726 RETPUSHUNDEF;
727#else
cea2e8a9 728 DIE(aTHX_ PL_no_func, "pipe");
a0d0e21e
LW
729#endif
730}
731
732PP(pp_fileno)
733{
27da23d5 734 dVAR; dSP; dTARGET;
a0d0e21e
LW
735 GV *gv;
736 IO *io;
760ac839 737 PerlIO *fp;
a5e1d062 738 const MAGIC *mg;
4592e6ca 739
a0d0e21e
LW
740 if (MAXARG < 1)
741 RETPUSHUNDEF;
159b6efe 742 gv = MUTABLE_GV(POPs);
9c9f25b8 743 io = GvIO(gv);
4592e6ca 744
9c9f25b8 745 if (io
ad64d0ec 746 && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar)))
5b468f54 747 {
d682515d 748 return tied_method0("FILENO", SP, MUTABLE_SV(io), mg);
4592e6ca
NIS
749 }
750
9c9f25b8 751 if (!io || !(fp = IoIFP(io))) {
c289d2f7
JH
752 /* Can't do this because people seem to do things like
753 defined(fileno($foo)) to check whether $foo is a valid fh.
51087808
NC
754
755 report_evil_fh(gv);
c289d2f7 756 */
a0d0e21e 757 RETPUSHUNDEF;
c289d2f7
JH
758 }
759
760ac839 760 PUSHi(PerlIO_fileno(fp));
a0d0e21e
LW
761 RETURN;
762}
763
764PP(pp_umask)
765{
97aff369 766 dVAR;
27da23d5 767 dSP;
d7e492a4 768#ifdef HAS_UMASK
27da23d5 769 dTARGET;
761237fe 770 Mode_t anum;
a0d0e21e 771
58536d15 772 if (MAXARG < 1 || (!TOPs && !POPs)) {
b0b546b3
GA
773 anum = PerlLIO_umask(022);
774 /* setting it to 022 between the two calls to umask avoids
775 * to have a window where the umask is set to 0 -- meaning
776 * that another thread could create world-writeable files. */
777 if (anum != 022)
778 (void)PerlLIO_umask(anum);
a0d0e21e
LW
779 }
780 else
6ad3d225 781 anum = PerlLIO_umask(POPi);
a0d0e21e
LW
782 TAINT_PROPER("umask");
783 XPUSHi(anum);
784#else
a0288114 785 /* Only DIE if trying to restrict permissions on "user" (self).
eec2d3df
GS
786 * Otherwise it's harmless and more useful to just return undef
787 * since 'group' and 'other' concepts probably don't exist here. */
58536d15 788 if (MAXARG >= 1 && (TOPs||POPs) && (POPi & 0700))
cea2e8a9 789 DIE(aTHX_ "umask not implemented");
6b88bc9c 790 XPUSHs(&PL_sv_undef);
a0d0e21e
LW
791#endif
792 RETURN;
793}
794
795PP(pp_binmode)
796{
27da23d5 797 dVAR; dSP;
a0d0e21e
LW
798 GV *gv;
799 IO *io;
760ac839 800 PerlIO *fp;
a0714e2c 801 SV *discp = NULL;
a0d0e21e
LW
802
803 if (MAXARG < 1)
804 RETPUSHUNDEF;
60382766 805 if (MAXARG > 1) {
16fe6d59 806 discp = POPs;
60382766 807 }
a0d0e21e 808
159b6efe 809 gv = MUTABLE_GV(POPs);
9c9f25b8 810 io = GvIO(gv);
4592e6ca 811
9c9f25b8 812 if (io) {
a5e1d062 813 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 814 if (mg) {
bc0c81ca
NC
815 /* This takes advantage of the implementation of the varargs
816 function, which I don't think that the optimiser will be able to
817 figure out. Although, as it's a static function, in theory it
818 could. */
d682515d
NC
819 return Perl_tied_method(aTHX_ "BINMODE", SP, MUTABLE_SV(io), mg,
820 G_SCALAR|TIED_METHOD_MORTALIZE_NOT_NEEDED,
821 discp ? 1 : 0, discp);
a79db61d 822 }
4592e6ca 823 }
a0d0e21e 824
9c9f25b8 825 if (!io || !(fp = IoIFP(io))) {
51087808 826 report_evil_fh(gv);
b5fe5ca2 827 SETERRNO(EBADF,RMS_IFI);
50f846a7
SC
828 RETPUSHUNDEF;
829 }
a0d0e21e 830
40d98b49 831 PUTBACK;
f0a78170 832 {
a79b25b7
VP
833 STRLEN len = 0;
834 const char *d = NULL;
835 int mode;
836 if (discp)
837 d = SvPV_const(discp, len);
838 mode = mode_from_discipline(d, len);
f0a78170
NC
839 if (PerlIO_binmode(aTHX_ fp, IoTYPE(io), mode, d)) {
840 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
841 if (!PerlIO_binmode(aTHX_ IoOFP(io), IoTYPE(io), mode, d)) {
842 SPAGAIN;
843 RETPUSHUNDEF;
844 }
845 }
846 SPAGAIN;
847 RETPUSHYES;
848 }
849 else {
850 SPAGAIN;
851 RETPUSHUNDEF;
38af81ff 852 }
40d98b49 853 }
a0d0e21e
LW
854}
855
856PP(pp_tie)
857{
27da23d5 858 dVAR; dSP; dMARK;
a0d0e21e 859 HV* stash;
07822e36 860 GV *gv = NULL;
a0d0e21e 861 SV *sv;
1df70142 862 const I32 markoff = MARK - PL_stack_base;
e1ec3a88 863 const char *methname;
14befaf4 864 int how = PERL_MAGIC_tied;
e336de0d 865 U32 items;
c4420975 866 SV *varsv = *++MARK;
a0d0e21e 867
6b05c17a
NIS
868 switch(SvTYPE(varsv)) {
869 case SVt_PVHV:
aec0c0cc
FC
870 {
871 HE *entry;
6b05c17a 872 methname = "TIEHASH";
aec0c0cc
FC
873 if (HvLAZYDEL(varsv) && (entry = HvEITER((HV *)varsv))) {
874 HvLAZYDEL_off(varsv);
875 hv_free_ent((HV *)varsv, entry);
876 }
85fbaab2 877 HvEITER_set(MUTABLE_HV(varsv), 0);
6b05c17a 878 break;
aec0c0cc 879 }
6b05c17a
NIS
880 case SVt_PVAV:
881 methname = "TIEARRAY";
ce65bc73
FC
882 if (!AvREAL(varsv)) {
883 if (!AvREIFY(varsv))
884 Perl_croak(aTHX_ "Cannot tie unreifiable array");
885 av_clear((AV *)varsv);
886 AvREIFY_off(varsv);
887 AvREAL_on(varsv);
888 }
6b05c17a
NIS
889 break;
890 case SVt_PVGV:
13be902c 891 case SVt_PVLV:
8bb5f786 892 if (isGV_with_GP(varsv) && !SvFAKE(varsv)) {
6e592b3a
BM
893 methname = "TIEHANDLE";
894 how = PERL_MAGIC_tiedscalar;
895 /* For tied filehandles, we apply tiedscalar magic to the IO
896 slot of the GP rather than the GV itself. AMS 20010812 */
897 if (!GvIOp(varsv))
898 GvIOp(varsv) = newIO();
ad64d0ec 899 varsv = MUTABLE_SV(GvIOp(varsv));
6e592b3a
BM
900 break;
901 }
902 /* FALL THROUGH */
6b05c17a
NIS
903 default:
904 methname = "TIESCALAR";
14befaf4 905 how = PERL_MAGIC_tiedscalar;
6b05c17a
NIS
906 break;
907 }
e336de0d 908 items = SP - MARK++;
a91d1d42 909 if (sv_isobject(*MARK)) { /* Calls GET magic. */
d343c3ef 910 ENTER_with_name("call_TIE");
e788e7d3 911 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 912 PUSHMARK(SP);
eb160463 913 EXTEND(SP,(I32)items);
e336de0d
GS
914 while (items--)
915 PUSHs(*MARK++);
916 PUTBACK;
864dbfa3 917 call_method(methname, G_SCALAR);
301e8125 918 }
6b05c17a 919 else {
086d2913
NC
920 /* Can't use call_method here, else this: fileno FOO; tie @a, "FOO"
921 * will attempt to invoke IO::File::TIEARRAY, with (best case) the
922 * wrong error message, and worse case, supreme action at a distance.
923 * (Sorry obfuscation writers. You're not going to be given this one.)
6b05c17a 924 */
4886938f
BF
925 stash = gv_stashsv(*MARK, 0);
926 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
35c1215d 927 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
a91d1d42 928 methname, SVfARG(SvOK(*MARK) ? *MARK : &PL_sv_no));
6b05c17a 929 }
d343c3ef 930 ENTER_with_name("call_TIE");
e788e7d3 931 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 932 PUSHMARK(SP);
eb160463 933 EXTEND(SP,(I32)items);
e336de0d
GS
934 while (items--)
935 PUSHs(*MARK++);
936 PUTBACK;
ad64d0ec 937 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
6b05c17a 938 }
a0d0e21e
LW
939 SPAGAIN;
940
941 sv = TOPs;
d3acc0f7 942 POPSTACK;
a0d0e21e 943 if (sv_isobject(sv)) {
33c27489 944 sv_unmagic(varsv, how);
ae21d580 945 /* Croak if a self-tie on an aggregate is attempted. */
b881518d 946 if (varsv == SvRV(sv) &&
d87ebaca
YST
947 (SvTYPE(varsv) == SVt_PVAV ||
948 SvTYPE(varsv) == SVt_PVHV))
ae21d580
JH
949 Perl_croak(aTHX_
950 "Self-ties of arrays and hashes are not supported");
a0714e2c 951 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
a0d0e21e 952 }
d343c3ef 953 LEAVE_with_name("call_TIE");
3280af22 954 SP = PL_stack_base + markoff;
a0d0e21e
LW
955 PUSHs(sv);
956 RETURN;
957}
958
959PP(pp_untie)
960{
27da23d5 961 dVAR; dSP;
5b468f54 962 MAGIC *mg;
33c27489 963 SV *sv = POPs;
1df70142 964 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 965 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
55497cff 966
ca0d4ed9 967 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
5b468f54
AMS
968 RETPUSHYES;
969
65eba18f 970 if ((mg = SvTIED_mg(sv, how))) {
1b6737cc 971 SV * const obj = SvRV(SvTIED_obj(sv, mg));
fa2b88e0 972 if (obj) {
c4420975 973 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
0bd48802 974 CV *cv;
c4420975 975 if (gv && isGV(gv) && (cv = GvCV(gv))) {
fa2b88e0 976 PUSHMARK(SP);
c33ef3ac 977 PUSHs(SvTIED_obj(MUTABLE_SV(gv), mg));
6e449a3a 978 mXPUSHi(SvREFCNT(obj) - 1);
fa2b88e0 979 PUTBACK;
d343c3ef 980 ENTER_with_name("call_UNTIE");
ad64d0ec 981 call_sv(MUTABLE_SV(cv), G_VOID);
d343c3ef 982 LEAVE_with_name("call_UNTIE");
fa2b88e0
JS
983 SPAGAIN;
984 }
a2a5de95
NC
985 else if (mg && SvREFCNT(obj) > 1) {
986 Perl_ck_warner(aTHX_ packWARN(WARN_UNTIE),
987 "untie attempted while %"UVuf" inner references still exist",
988 (UV)SvREFCNT(obj) - 1 ) ;
c4420975 989 }
cbdc8872
PP
990 }
991 }
38193a09 992 sv_unmagic(sv, how) ;
55497cff 993 RETPUSHYES;
a0d0e21e
LW
994}
995
c07a80fd
PP
996PP(pp_tied)
997{
97aff369 998 dVAR;
39644a26 999 dSP;
1b6737cc 1000 const MAGIC *mg;
33c27489 1001 SV *sv = POPs;
1df70142 1002 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 1003 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
5b468f54 1004
4be76e1f 1005 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
5b468f54 1006 RETPUSHUNDEF;
c07a80fd 1007
155aba94 1008 if ((mg = SvTIED_mg(sv, how))) {
dc456155 1009 PUSHs(SvTIED_obj(sv, mg));
33c27489 1010 RETURN;
c07a80fd 1011 }
c07a80fd
PP
1012 RETPUSHUNDEF;
1013}
1014
a0d0e21e
LW
1015PP(pp_dbmopen)
1016{
27da23d5 1017 dVAR; dSP;
a0d0e21e
LW
1018 dPOPPOPssrl;
1019 HV* stash;
07822e36 1020 GV *gv = NULL;
a0d0e21e 1021
85fbaab2 1022 HV * const hv = MUTABLE_HV(POPs);
84bafc02 1023 SV * const sv = newSVpvs_flags("AnyDBM_File", SVs_TEMP);
da51bb9b 1024 stash = gv_stashsv(sv, 0);
8ebc5c01 1025 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
a0d0e21e 1026 PUTBACK;
864dbfa3 1027 require_pv("AnyDBM_File.pm");
a0d0e21e 1028 SPAGAIN;
eff494dd 1029 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH")))
cea2e8a9 1030 DIE(aTHX_ "No dbm on this machine");
a0d0e21e
LW
1031 }
1032
57d3b86d 1033 ENTER;
924508f0 1034 PUSHMARK(SP);
6b05c17a 1035
924508f0 1036 EXTEND(SP, 5);
a0d0e21e
LW
1037 PUSHs(sv);
1038 PUSHs(left);
1039 if (SvIV(right))
6e449a3a 1040 mPUSHu(O_RDWR|O_CREAT);
a0d0e21e 1041 else
480e0d3c 1042 {
6e449a3a 1043 mPUSHu(O_RDWR);
480e0d3c
FC
1044 if (!SvOK(right)) right = &PL_sv_no;
1045 }
a0d0e21e 1046 PUSHs(right);
57d3b86d 1047 PUTBACK;
ad64d0ec 1048 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
a0d0e21e
LW
1049 SPAGAIN;
1050
1051 if (!sv_isobject(TOPs)) {
924508f0
GS
1052 SP--;
1053 PUSHMARK(SP);
a0d0e21e
LW
1054 PUSHs(sv);
1055 PUSHs(left);
6e449a3a 1056 mPUSHu(O_RDONLY);
a0d0e21e 1057 PUSHs(right);
a0d0e21e 1058 PUTBACK;
ad64d0ec 1059 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
a0d0e21e
LW
1060 SPAGAIN;
1061 }
1062
6b05c17a 1063 if (sv_isobject(TOPs)) {
ad64d0ec
NC
1064 sv_unmagic(MUTABLE_SV(hv), PERL_MAGIC_tied);
1065 sv_magic(MUTABLE_SV(hv), TOPs, PERL_MAGIC_tied, NULL, 0);
6b05c17a 1066 }
a0d0e21e
LW
1067 LEAVE;
1068 RETURN;
1069}
1070
a0d0e21e
LW
1071PP(pp_sselect)
1072{
a0d0e21e 1073#ifdef HAS_SELECT
97aff369 1074 dVAR; dSP; dTARGET;
eb578fdb
KW
1075 I32 i;
1076 I32 j;
1077 char *s;
1078 SV *sv;
65202027 1079 NV value;
a0d0e21e
LW
1080 I32 maxlen = 0;
1081 I32 nfound;
1082 struct timeval timebuf;
1083 struct timeval *tbuf = &timebuf;
1084 I32 growsize;
1085 char *fd_sets[4];
1086#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1087 I32 masksize;
1088 I32 offset;
1089 I32 k;
1090
1091# if BYTEORDER & 0xf0000
1092# define ORDERBYTE (0x88888888 - BYTEORDER)
1093# else
1094# define ORDERBYTE (0x4444 - BYTEORDER)
1095# endif
1096
1097#endif
1098
1099 SP -= 4;
1100 for (i = 1; i <= 3; i++) {
c4420975 1101 SV * const sv = SP[i];
9d6d5a79 1102 SvGETMAGIC(sv);
15547071
GA
1103 if (!SvOK(sv))
1104 continue;
e3918bb7 1105 if (SvIsCOW(sv))
729c079f 1106 sv_force_normal_flags(sv, 0);
e3918bb7 1107 if (SvREADONLY(sv) && !(SvPOK(sv) && SvCUR(sv) == 0))
cb077ed2 1108 Perl_croak_no_modify();
4ef2275c 1109 if (!SvPOK(sv)) {
9d6d5a79
FC
1110 if (!SvPOKp(sv))
1111 Perl_ck_warner(aTHX_ packWARN(WARN_MISC),
1112 "Non-string passed as bitmask");
1113 SvPV_force_nomg_nolen(sv); /* force string conversion */
4ef2275c 1114 }
729c079f 1115 j = SvCUR(sv);
a0d0e21e
LW
1116 if (maxlen < j)
1117 maxlen = j;
1118 }
1119
5ff3f7a4 1120/* little endians can use vecs directly */
e366b469 1121#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
5ff3f7a4 1122# ifdef NFDBITS
a0d0e21e 1123
5ff3f7a4
GS
1124# ifndef NBBY
1125# define NBBY 8
1126# endif
a0d0e21e
LW
1127
1128 masksize = NFDBITS / NBBY;
5ff3f7a4 1129# else
a0d0e21e 1130 masksize = sizeof(long); /* documented int, everyone seems to use long */
5ff3f7a4 1131# endif
a0d0e21e
LW
1132 Zero(&fd_sets[0], 4, char*);
1133#endif
1134
ad517f75
MHM
1135# if SELECT_MIN_BITS == 1
1136 growsize = sizeof(fd_set);
1137# else
1138# if defined(__GLIBC__) && defined(__FD_SETSIZE)
1139# undef SELECT_MIN_BITS
1140# define SELECT_MIN_BITS __FD_SETSIZE
1141# endif
e366b469
PG
1142 /* If SELECT_MIN_BITS is greater than one we most probably will want
1143 * to align the sizes with SELECT_MIN_BITS/8 because for example
1144 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
1145 * UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
1146 * on (sets/tests/clears bits) is 32 bits. */
1147 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
e366b469
PG
1148# endif
1149
a0d0e21e
LW
1150 sv = SP[4];
1151 if (SvOK(sv)) {
1152 value = SvNV(sv);
1153 if (value < 0.0)
1154 value = 0.0;
1155 timebuf.tv_sec = (long)value;
65202027 1156 value -= (NV)timebuf.tv_sec;
a0d0e21e
LW
1157 timebuf.tv_usec = (long)(value * 1000000.0);
1158 }
1159 else
4608196e 1160 tbuf = NULL;
a0d0e21e
LW
1161
1162 for (i = 1; i <= 3; i++) {
1163 sv = SP[i];
15547071 1164 if (!SvOK(sv) || SvCUR(sv) == 0) {
a0d0e21e
LW
1165 fd_sets[i] = 0;
1166 continue;
1167 }
4ef2275c 1168 assert(SvPOK(sv));
a0d0e21e
LW
1169 j = SvLEN(sv);
1170 if (j < growsize) {
1171 Sv_Grow(sv, growsize);
a0d0e21e 1172 }
c07a80fd
PP
1173 j = SvCUR(sv);
1174 s = SvPVX(sv) + j;
1175 while (++j <= growsize) {
1176 *s++ = '\0';
1177 }
1178
a0d0e21e
LW
1179#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1180 s = SvPVX(sv);
a02a5408 1181 Newx(fd_sets[i], growsize, char);
a0d0e21e
LW
1182 for (offset = 0; offset < growsize; offset += masksize) {
1183 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1184 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1185 }
1186#else
1187 fd_sets[i] = SvPVX(sv);
1188#endif
1189 }
1190
dc4c69d9
JH
1191#ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1192 /* Can't make just the (void*) conditional because that would be
1193 * cpp #if within cpp macro, and not all compilers like that. */
1194 nfound = PerlSock_select(
1195 maxlen * 8,
1196 (Select_fd_set_t) fd_sets[1],
1197 (Select_fd_set_t) fd_sets[2],
1198 (Select_fd_set_t) fd_sets[3],
1199 (void*) tbuf); /* Workaround for compiler bug. */
1200#else
6ad3d225 1201 nfound = PerlSock_select(
a0d0e21e
LW
1202 maxlen * 8,
1203 (Select_fd_set_t) fd_sets[1],
1204 (Select_fd_set_t) fd_sets[2],
1205 (Select_fd_set_t) fd_sets[3],
1206 tbuf);
dc4c69d9 1207#endif
a0d0e21e
LW
1208 for (i = 1; i <= 3; i++) {
1209 if (fd_sets[i]) {
1210 sv = SP[i];
1211#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1212 s = SvPVX(sv);
1213 for (offset = 0; offset < growsize; offset += masksize) {
1214 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1215 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1216 }
1217 Safefree(fd_sets[i]);
1218#endif
1219 SvSETMAGIC(sv);
1220 }
1221 }
1222
4189264e 1223 PUSHi(nfound);
a0d0e21e 1224 if (GIMME == G_ARRAY && tbuf) {
65202027
DS
1225 value = (NV)(timebuf.tv_sec) +
1226 (NV)(timebuf.tv_usec) / 1000000.0;
6e449a3a 1227 mPUSHn(value);
a0d0e21e
LW
1228 }
1229 RETURN;
1230#else
cea2e8a9 1231 DIE(aTHX_ "select not implemented");
a0d0e21e
LW
1232#endif
1233}
1234
8226a3d7
NC
1235/*
1236=for apidoc setdefout
1237
1238Sets PL_defoutgv, the default file handle for output, to the passed in
1239typeglob. As PL_defoutgv "owns" a reference on its typeglob, the reference
1240count of the passed in typeglob is increased by one, and the reference count
1241of the typeglob that PL_defoutgv points to is decreased by one.
1242
1243=cut
1244*/
1245
4633a7c4 1246void
864dbfa3 1247Perl_setdefout(pTHX_ GV *gv)
4633a7c4 1248{
97aff369 1249 dVAR;
9a9bb270
FC
1250 PERL_ARGS_ASSERT_SETDEFOUT;
1251 SvREFCNT_inc_simple_void_NN(gv);
ef8d46e8 1252 SvREFCNT_dec(PL_defoutgv);
3280af22 1253 PL_defoutgv = gv;
4633a7c4
LW
1254}
1255
a0d0e21e
LW
1256PP(pp_select)
1257{
97aff369 1258 dVAR; dSP; dTARGET;
4633a7c4 1259 HV *hv;
159b6efe 1260 GV * const newdefout = (PL_op->op_private > 0) ? (MUTABLE_GV(POPs)) : NULL;
099be4f1 1261 GV * egv = GvEGVx(PL_defoutgv);
0df2568b 1262 GV * const *gvp;
4633a7c4 1263
4633a7c4 1264 if (!egv)
3280af22 1265 egv = PL_defoutgv;
099be4f1 1266 hv = isGV_with_GP(egv) ? GvSTASH(egv) : NULL;
0df2568b 1267 gvp = hv && HvENAME(hv)
204263bc
FC
1268 ? (GV**)hv_fetch(hv, GvNAME(egv), HEK_UTF8(GvNAME_HEK(egv)) ? -GvNAMELEN(egv) : GvNAMELEN(egv), FALSE)
1269 : NULL;
0df2568b 1270 if (gvp && *gvp == egv) {
bd61b366 1271 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
f86702cc 1272 XPUSHTARG;
0df2568b
FC
1273 }
1274 else {
ad64d0ec 1275 mXPUSHs(newRV(MUTABLE_SV(egv)));
4633a7c4
LW
1276 }
1277
1278 if (newdefout) {
ded8aa31
GS
1279 if (!GvIO(newdefout))
1280 gv_IOadd(newdefout);
4633a7c4
LW
1281 setdefout(newdefout);
1282 }
1283
a0d0e21e
LW
1284 RETURN;
1285}
1286
1287PP(pp_getc)
1288{
27da23d5 1289 dVAR; dSP; dTARGET;
30901a8a
FC
1290 GV * const gv =
1291 MAXARG==0 || (!TOPs && !POPs) ? PL_stdingv : MUTABLE_GV(POPs);
9c9f25b8 1292 IO *const io = GvIO(gv);
2ae324a7 1293
ac3697cd
NC
1294 if (MAXARG == 0)
1295 EXTEND(SP, 1);
1296
9c9f25b8 1297 if (io) {
a5e1d062 1298 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1299 if (mg) {
0240605e 1300 const U32 gimme = GIMME_V;
d682515d 1301 Perl_tied_method(aTHX_ "GETC", SP, MUTABLE_SV(io), mg, gimme, 0);
0240605e
NC
1302 if (gimme == G_SCALAR) {
1303 SPAGAIN;
a79db61d 1304 SvSetMagicSV_nosteal(TARG, TOPs);
0240605e
NC
1305 }
1306 return NORMAL;
a79db61d 1307 }
2ae324a7 1308 }
90133b69 1309 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
51087808 1310 if (!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
831e4cc3 1311 report_evil_fh(gv);
b5fe5ca2 1312 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1313 RETPUSHUNDEF;
90133b69 1314 }
bbce6d69 1315 TAINT;
76f68e9b 1316 sv_setpvs(TARG, " ");
9bc64814 1317 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
7d59b7e4
NIS
1318 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1319 /* Find out how many bytes the char needs */
aa07b2f6 1320 Size_t len = UTF8SKIP(SvPVX_const(TARG));
7d59b7e4
NIS
1321 if (len > 1) {
1322 SvGROW(TARG,len+1);
1323 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1324 SvCUR_set(TARG,1+len);
1325 }
1326 SvUTF8_on(TARG);
1327 }
a0d0e21e
LW
1328 PUSHTARG;
1329 RETURN;
1330}
1331
76e3520e 1332STATIC OP *
cea2e8a9 1333S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
a0d0e21e 1334{
27da23d5 1335 dVAR;
eb578fdb 1336 PERL_CONTEXT *cx;
f54cb97a 1337 const I32 gimme = GIMME_V;
a0d0e21e 1338
7918f24d
NC
1339 PERL_ARGS_ASSERT_DOFORM;
1340
7b190374
NC
1341 if (cv && CvCLONE(cv))
1342 cv = MUTABLE_CV(sv_2mortal(MUTABLE_SV(cv_clone(cv))));
1343
a0d0e21e
LW
1344 ENTER;
1345 SAVETMPS;
1346
146174a9 1347 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
10067d9a 1348 PUSHFORMAT(cx, retop);
f32c7e86
FC
1349 if (CvDEPTH(cv) >= 2) {
1350 PERL_STACK_OVERFLOW_CHECK();
1351 pad_push(CvPADLIST(cv), CvDEPTH(cv));
1352 }
fd617465 1353 SAVECOMPPAD();
f32c7e86 1354 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), CvDEPTH(cv));
a0d0e21e 1355
4633a7c4 1356 setdefout(gv); /* locally select filehandle so $% et al work */
a0d0e21e
LW
1357 return CvSTART(cv);
1358}
1359
1360PP(pp_enterwrite)
1361{
97aff369 1362 dVAR;
39644a26 1363 dSP;
eb578fdb
KW
1364 GV *gv;
1365 IO *io;
a0d0e21e 1366 GV *fgv;
07822e36
JH
1367 CV *cv = NULL;
1368 SV *tmpsv = NULL;
a0d0e21e 1369
2addaaf3 1370 if (MAXARG == 0) {
3280af22 1371 gv = PL_defoutgv;
2addaaf3
NC
1372 EXTEND(SP, 1);
1373 }
a0d0e21e 1374 else {
159b6efe 1375 gv = MUTABLE_GV(POPs);
a0d0e21e 1376 if (!gv)
3280af22 1377 gv = PL_defoutgv;
a0d0e21e 1378 }
a0d0e21e
LW
1379 io = GvIO(gv);
1380 if (!io) {
1381 RETPUSHNO;
1382 }
1383 if (IoFMT_GV(io))
1384 fgv = IoFMT_GV(io);
1385 else
1386 fgv = gv;
1387
2d1ebc9b 1388 assert(fgv);
a79db61d 1389
a0d0e21e 1390 cv = GvFORM(fgv);
a0d0e21e 1391 if (!cv) {
10edeb5d 1392 tmpsv = sv_newmortal();
f4a7049d 1393 gv_efullname4(tmpsv, fgv, NULL, FALSE);
2d1ebc9b 1394 DIE(aTHX_ "Undefined format \"%"SVf"\" called", SVfARG(tmpsv));
a0d0e21e 1395 }
44a8e56a 1396 IoFLAGS(io) &= ~IOf_DIDTOP;
8e4ecf23 1397 RETURNOP(doform(cv,gv,PL_op->op_next));
a0d0e21e
LW
1398}
1399
1400PP(pp_leavewrite)
1401{
27da23d5 1402 dVAR; dSP;
f9c764c5 1403 GV * const gv = cxstack[cxstack_ix].blk_format.gv;
eb578fdb 1404 IO * const io = GvIOp(gv);
8b8cacda 1405 PerlIO *ofp;
760ac839 1406 PerlIO *fp;
8772537c
AL
1407 SV **newsp;
1408 I32 gimme;
eb578fdb 1409 PERL_CONTEXT *cx;
8f89e5a9 1410 OP *retop;
a0d0e21e 1411
8b8cacda 1412 if (!io || !(ofp = IoOFP(io)))
1413 goto forget_top;
1414
760ac839 1415 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1416 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
8b8cacda 1417
3280af22
NIS
1418 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1419 PL_formtarget != PL_toptarget)
a0d0e21e 1420 {
4633a7c4
LW
1421 GV *fgv;
1422 CV *cv;
a0d0e21e
LW
1423 if (!IoTOP_GV(io)) {
1424 GV *topgv;
a0d0e21e
LW
1425
1426 if (!IoTOP_NAME(io)) {
1b6737cc 1427 SV *topname;
a0d0e21e
LW
1428 if (!IoFMT_NAME(io))
1429 IoFMT_NAME(io) = savepv(GvNAME(gv));
d0c0e7dd
FC
1430 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%"HEKf"_TOP",
1431 HEKfARG(GvNAME_HEK(gv))));
f776e3cd 1432 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
748a9306 1433 if ((topgv && GvFORM(topgv)) ||
fafc274c 1434 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
2e0de35c 1435 IoTOP_NAME(io) = savesvpv(topname);
a0d0e21e 1436 else
89529cee 1437 IoTOP_NAME(io) = savepvs("top");
a0d0e21e 1438 }
f776e3cd 1439 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
a0d0e21e 1440 if (!topgv || !GvFORM(topgv)) {
b929a54b 1441 IoLINES_LEFT(io) = IoPAGE_LEN(io);
a0d0e21e
LW
1442 goto forget_top;
1443 }
1444 IoTOP_GV(io) = topgv;
1445 }
748a9306
LW
1446 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1447 I32 lines = IoLINES_LEFT(io);
504618e9 1448 const char *s = SvPVX_const(PL_formtarget);
8e07c86e
AD
1449 if (lines <= 0) /* Yow, header didn't even fit!!! */
1450 goto forget_top;
748a9306
LW
1451 while (lines-- > 0) {
1452 s = strchr(s, '\n');
1453 if (!s)
1454 break;
1455 s++;
1456 }
1457 if (s) {
f54cb97a 1458 const STRLEN save = SvCUR(PL_formtarget);
aa07b2f6 1459 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
d75029d0
NIS
1460 do_print(PL_formtarget, ofp);
1461 SvCUR_set(PL_formtarget, save);
3280af22
NIS
1462 sv_chop(PL_formtarget, s);
1463 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW
1464 }
1465 }
a0d0e21e 1466 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
f6dfc736 1467 do_print(GvSV(gv_fetchpvs("\f", GV_ADD, SVt_PV)), ofp);
a0d0e21e
LW
1468 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1469 IoPAGE(io)++;
3280af22 1470 PL_formtarget = PL_toptarget;
748a9306 1471 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4
LW
1472 fgv = IoTOP_GV(io);
1473 if (!fgv)
cea2e8a9 1474 DIE(aTHX_ "bad top format reference");
4633a7c4 1475 cv = GvFORM(fgv);
1df70142
AL
1476 if (!cv) {
1477 SV * const sv = sv_newmortal();
bd61b366 1478 gv_efullname4(sv, fgv, NULL, FALSE);
44b7e78a 1479 DIE(aTHX_ "Undefined top format \"%"SVf"\" called", SVfARG(sv));
4633a7c4 1480 }
43cd5cb7 1481 return doform(cv, gv, PL_op);
a0d0e21e
LW
1482 }
1483
1484 forget_top:
3280af22 1485 POPBLOCK(cx,PL_curpm);
a0d0e21e 1486 POPFORMAT(cx);
8f89e5a9 1487 retop = cx->blk_sub.retop;
43cd5cb7 1488 SP = newsp; /* ignore retval of formline */
a0d0e21e
LW
1489 LEAVE;
1490
c782dc1d
FC
1491 if (!io || !(fp = IoOFP(io))) {
1492 if (io && IoIFP(io))
7716c5c5 1493 report_wrongway_fh(gv, '<');
c521cf7c 1494 else
7716c5c5 1495 report_evil_fh(gv);
3280af22 1496 PUSHs(&PL_sv_no);
a0d0e21e
LW
1497 }
1498 else {
3280af22 1499 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
a2a5de95 1500 Perl_ck_warner(aTHX_ packWARN(WARN_IO), "page overflow");
a0d0e21e 1501 }
d75029d0 1502 if (!do_print(PL_formtarget, fp))
3280af22 1503 PUSHs(&PL_sv_no);
a0d0e21e 1504 else {
3280af22
NIS
1505 FmLINES(PL_formtarget) = 0;
1506 SvCUR_set(PL_formtarget, 0);
1507 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1508 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1509 (void)PerlIO_flush(fp);
3280af22 1510 PUSHs(&PL_sv_yes);
a0d0e21e
LW
1511 }
1512 }
3280af22 1513 PL_formtarget = PL_bodytarget;
29033a8a 1514 PERL_UNUSED_VAR(gimme);
8e4ecf23 1515 RETURNOP(retop);
a0d0e21e
LW
1516}
1517
1518PP(pp_prtf)
1519{
27da23d5 1520 dVAR; dSP; dMARK; dORIGMARK;
760ac839 1521 PerlIO *fp;
a0d0e21e 1522
159b6efe
NC
1523 GV * const gv
1524 = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv;
9c9f25b8 1525 IO *const io = GvIO(gv);
46fc3d4c 1526
87385d72
FC
1527 /* Treat empty list as "" */
1528 if (MARK == SP) XPUSHs(&PL_sv_no);
1529
9c9f25b8 1530 if (io) {
a5e1d062 1531 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d
AL
1532 if (mg) {
1533 if (MARK == ORIGMARK) {
1534 MEXTEND(SP, 1);
1535 ++MARK;
1536 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1537 ++SP;
1538 }
d682515d
NC
1539 return Perl_tied_method(aTHX_ "PRINTF", mark - 1, MUTABLE_SV(io),
1540 mg,
1541 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1542 sp - mark);
a79db61d 1543 }
46fc3d4c
PP
1544 }
1545
9c9f25b8 1546 if (!io) {
51087808 1547 report_evil_fh(gv);
93189314 1548 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW
1549 goto just_say_no;
1550 }
1551 else if (!(fp = IoOFP(io))) {
7716c5c5
NC
1552 if (IoIFP(io))
1553 report_wrongway_fh(gv, '<');
1554 else if (ckWARN(WARN_CLOSED))
1555 report_evil_fh(gv);
93189314 1556 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
a0d0e21e
LW
1557 goto just_say_no;
1558 }
1559 else {
c7bd8b84 1560 SV *sv = sv_newmortal();
a0d0e21e
LW
1561 do_sprintf(sv, SP - MARK, MARK + 1);
1562 if (!do_print(sv, fp))
1563 goto just_say_no;
1564
1565 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1566 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW
1567 goto just_say_no;
1568 }
a0d0e21e 1569 SP = ORIGMARK;
3280af22 1570 PUSHs(&PL_sv_yes);
a0d0e21e
LW
1571 RETURN;
1572
1573 just_say_no:
a0d0e21e 1574 SP = ORIGMARK;
3280af22 1575 PUSHs(&PL_sv_undef);
a0d0e21e
LW
1576 RETURN;
1577}
1578
c07a80fd
PP
1579PP(pp_sysopen)
1580{
97aff369 1581 dVAR;
39644a26 1582 dSP;
de5e49e1 1583 const int perm = (MAXARG > 3 && (TOPs || POPs)) ? POPi : 0666;
1df70142 1584 const int mode = POPi;
1b6737cc 1585 SV * const sv = POPs;
159b6efe 1586 GV * const gv = MUTABLE_GV(POPs);
1b6737cc 1587 STRLEN len;
c07a80fd 1588
4592e6ca 1589 /* Need TIEHANDLE method ? */
1b6737cc 1590 const char * const tmps = SvPV_const(sv, len);
e62f0680 1591 /* FIXME? do_open should do const */
4608196e 1592 if (do_open(gv, tmps, len, TRUE, mode, perm, NULL)) {
c07a80fd 1593 IoLINES(GvIOp(gv)) = 0;
3280af22 1594 PUSHs(&PL_sv_yes);
c07a80fd
PP
1595 }
1596 else {
3280af22 1597 PUSHs(&PL_sv_undef);
c07a80fd
PP
1598 }
1599 RETURN;
1600}
1601
a0d0e21e
LW
1602PP(pp_sysread)
1603{
27da23d5 1604 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
0b423688 1605 SSize_t offset;
a0d0e21e
LW
1606 IO *io;
1607 char *buffer;
0b423688 1608 STRLEN orig_size;
5b54f415 1609 SSize_t length;
eb5c063a 1610 SSize_t count;
748a9306 1611 SV *bufsv;
a0d0e21e 1612 STRLEN blen;
eb5c063a 1613 int fp_utf8;
1dd30107
NC
1614 int buffer_utf8;
1615 SV *read_target;
eb5c063a
NIS
1616 Size_t got = 0;
1617 Size_t wanted;
1d636c13 1618 bool charstart = FALSE;
87330c3c
JH
1619 STRLEN charskip = 0;
1620 STRLEN skip = 0;
a0d0e21e 1621
159b6efe 1622 GV * const gv = MUTABLE_GV(*++MARK);
5b468f54 1623 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1b6737cc 1624 && gv && (io = GvIO(gv)) )
137443ea 1625 {
a5e1d062 1626 const MAGIC *const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1b6737cc 1627 if (mg) {
d682515d
NC
1628 return Perl_tied_method(aTHX_ "READ", mark - 1, MUTABLE_SV(io), mg,
1629 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1630 sp - mark);
1b6737cc 1631 }
2ae324a7
PP
1632 }
1633
a0d0e21e
LW
1634 if (!gv)
1635 goto say_undef;
748a9306 1636 bufsv = *++MARK;
ff68c719 1637 if (! SvOK(bufsv))
76f68e9b 1638 sv_setpvs(bufsv, "");
a0d0e21e 1639 length = SvIVx(*++MARK);
4bac9ae4
CS
1640 if (length < 0)
1641 DIE(aTHX_ "Negative length");
748a9306 1642 SETERRNO(0,0);
a0d0e21e
LW
1643 if (MARK < SP)
1644 offset = SvIVx(*++MARK);
1645 else
1646 offset = 0;
1647 io = GvIO(gv);
b5fe5ca2 1648 if (!io || !IoIFP(io)) {
51087808 1649 report_evil_fh(gv);
b5fe5ca2 1650 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1651 goto say_undef;
b5fe5ca2 1652 }
0064a8a9 1653 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
7d59b7e4 1654 buffer = SvPVutf8_force(bufsv, blen);
1e54db1a 1655 /* UTF-8 may not have been set if they are all low bytes */
eb5c063a 1656 SvUTF8_on(bufsv);
9b9d7ce8 1657 buffer_utf8 = 0;
7d59b7e4
NIS
1658 }
1659 else {
1660 buffer = SvPV_force(bufsv, blen);
1dd30107 1661 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
7d59b7e4 1662 }
4bac9ae4 1663 if (DO_UTF8(bufsv)) {
3f914778 1664 blen = sv_len_utf8_nomg(bufsv);
4bac9ae4 1665 }
7d59b7e4 1666
d0965105
JH
1667 charstart = TRUE;
1668 charskip = 0;
87330c3c 1669 skip = 0;
4bac9ae4 1670 wanted = length;
d0965105 1671
a0d0e21e 1672#ifdef HAS_SOCKET
533c011a 1673 if (PL_op->op_type == OP_RECV) {
0b423688 1674 Sock_size_t bufsize;
46fc3d4c 1675 char namebuf[MAXPATHLEN];
b5afd346 1676#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
490ab354
JH
1677 bufsize = sizeof (struct sockaddr_in);
1678#else
46fc3d4c 1679 bufsize = sizeof namebuf;
490ab354 1680#endif
abf95952
IZ
1681#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1682 if (bufsize >= 256)
1683 bufsize = 255;
1684#endif
eb160463 1685 buffer = SvGROW(bufsv, (STRLEN)(length+1));
bbce6d69 1686 /* 'offset' means 'flags' here */
eb5c063a 1687 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
10edeb5d 1688 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1689 if (count < 0)
a0d0e21e 1690 RETPUSHUNDEF;
8eb023a9
DM
1691 /* MSG_TRUNC can give oversized count; quietly lose it */
1692 if (count > length)
1693 count = length;
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
LW
2409
2410 RETPUSHYES;
a0d0e21e 2411}
7627e6d0 2412#endif
a0d0e21e
LW
2413
2414PP(pp_sockpair)
2415{
c95c94b1 2416#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
97aff369 2417 dVAR; dSP;
7452cf6a
AL
2418 const int protocol = POPi;
2419 const int type = POPi;
2420 const int domain = POPi;
159b6efe
NC
2421 GV * const gv2 = MUTABLE_GV(POPs);
2422 GV * const gv1 = MUTABLE_GV(POPs);
eb578fdb
KW
2423 IO * const io1 = gv1 ? GvIOn(gv1) : NULL;
2424 IO * const io2 = gv2 ? GvIOn(gv2) : NULL;
a0d0e21e
LW
2425 int fd[2];
2426
9c9f25b8
NC
2427 if (!io1)
2428 report_evil_fh(gv1);
2429 if (!io2)
2430 report_evil_fh(gv2);
a0d0e21e 2431
46d2cc54 2432 if (io1 && IoIFP(io1))
dc0d0a5f 2433 do_close(gv1, FALSE);
46d2cc54 2434 if (io2 && IoIFP(io2))
dc0d0a5f 2435 do_close(gv2, FALSE);
57171420 2436
46d2cc54
NC
2437 if (!io1 || !io2)
2438 RETPUSHUNDEF;
2439
a0d0e21e 2440 TAINT_PROPER("socketpair");
6ad3d225 2441 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
a0d0e21e 2442 RETPUSHUNDEF;
460c8493
IZ
2443 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2444 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
50952442 2445 IoTYPE(io1) = IoTYPE_SOCKET;
460c8493
IZ
2446 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2447 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
50952442 2448 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2449 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW
2450 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2451 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2452 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW
2453 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2454 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2455 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW
2456 RETPUSHUNDEF;
2457 }
8d2a6795
GS
2458#if defined(HAS_FCNTL) && defined(F_SETFD)
2459 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2460 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2461#endif
a0d0e21e
LW
2462
2463 RETPUSHYES;
2464#else
cea2e8a9 2465 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW
2466#endif
2467}
2468
7627e6d0
NC
2469#ifdef HAS_SOCKET
2470
a0d0e21e
LW
2471PP(pp_bind)
2472{
97aff369 2473 dVAR; dSP;
7452cf6a 2474 SV * const addrsv = POPs;
349d4f2f
NC
2475 /* OK, so on what platform does bind modify addr? */
2476 const char *addr;
159b6efe 2477 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2478 IO * const io = GvIOn(gv);
a0d0e21e 2479 STRLEN len;
32b81f04 2480 const int op_type = PL_op->op_type;
a0d0e21e
LW
2481
2482 if (!io || !IoIFP(io))
2483 goto nuts;
2484
349d4f2f 2485 addr = SvPV_const(addrsv, len);
32b81f04
NC
2486 TAINT_PROPER(PL_op_desc[op_type]);
2487 if ((op_type == OP_BIND
2488 ? PerlSock_bind(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len)
2489 : PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len))
2490 >= 0)
a0d0e21e
LW
2491 RETPUSHYES;
2492 else
2493 RETPUSHUNDEF;
2494
2495nuts:
fbcda526 2496 report_evil_fh(gv);
93189314 2497 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2498 RETPUSHUNDEF;
a0d0e21e
LW
2499}
2500
2501PP(pp_listen)
2502{
97aff369 2503 dVAR; dSP;
7452cf6a 2504 const int backlog = POPi;
159b6efe 2505 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2506 IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2507
9c9f25b8 2508 if (!io || !IoIFP(io))
a0d0e21e
LW
2509 goto nuts;
2510
6ad3d225 2511 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW
2512 RETPUSHYES;
2513 else
2514 RETPUSHUNDEF;
2515
2516nuts:
fbcda526 2517 report_evil_fh(gv);
93189314 2518 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2519 RETPUSHUNDEF;
a0d0e21e
LW
2520}
2521
2522PP(pp_accept)
2523{
97aff369 2524 dVAR; dSP; dTARGET;
eb578fdb
KW
2525 IO *nstio;
2526 IO *gstio;
93d47a36 2527 char namebuf[MAXPATHLEN];
b5afd346 2528#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
93d47a36
JH
2529 Sock_size_t len = sizeof (struct sockaddr_in);
2530#else
2531 Sock_size_t len = sizeof namebuf;
2532#endif
159b6efe
NC
2533 GV * const ggv = MUTABLE_GV(POPs);
2534 GV * const ngv = MUTABLE_GV(POPs);
a0d0e21e
LW
2535 int fd;
2536
a0d0e21e
LW
2537 if (!ngv)
2538 goto badexit;
2539 if (!ggv)
2540 goto nuts;
2541
2542 gstio = GvIO(ggv);
2543 if (!gstio || !IoIFP(gstio))
2544 goto nuts;
2545
2546 nstio = GvIOn(ngv);
93d47a36 2547 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
e294cc5d
JH
2548#if defined(OEMVS)
2549 if (len == 0) {
2550 /* Some platforms indicate zero length when an AF_UNIX client is
2551 * not bound. Simulate a non-zero-length sockaddr structure in
2552 * this case. */
2553 namebuf[0] = 0; /* sun_len */
2554 namebuf[1] = AF_UNIX; /* sun_family */
2555 len = 2;
2556 }
2557#endif
2558
a0d0e21e
LW
2559 if (fd < 0)
2560 goto badexit;
a70048fb
AB
2561 if (IoIFP(nstio))
2562 do_close(ngv, FALSE);
460c8493
IZ
2563 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2564 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2565 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2566 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW
2567 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2568 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2569 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW
2570 goto badexit;
2571 }
8d2a6795
GS
2572#if defined(HAS_FCNTL) && defined(F_SETFD)
2573 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2574#endif
a0d0e21e 2575
381c1bae 2576#ifdef __SCO_VERSION__
93d47a36 2577 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
381c1bae 2578#endif
ed79a026 2579
93d47a36 2580 PUSHp(namebuf, len);
a0d0e21e
LW
2581 RETURN;
2582
2583nuts:
fbcda526 2584 report_evil_fh(ggv);
93189314 2585 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW
2586
2587badexit:
2588 RETPUSHUNDEF;
2589
a0d0e21e
LW
2590}
2591
2592PP(pp_shutdown)
2593{
97aff369 2594 dVAR; dSP; dTARGET;
7452cf6a 2595 const int how = POPi;
159b6efe 2596 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2597 IO * const io = GvIOn(gv);
a0d0e21e
LW
2598
2599 if (!io || !IoIFP(io))
2600 goto nuts;
2601
6ad3d225 2602 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW
2603 RETURN;
2604
2605nuts:
fbcda526 2606 report_evil_fh(gv);
93189314 2607 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2608 RETPUSHUNDEF;
a0d0e21e
LW
2609}
2610
a0d0e21e
LW
2611PP(pp_ssockopt)
2612{
97aff369 2613 dVAR; dSP;
7452cf6a 2614 const int optype = PL_op->op_type;
561b68a9 2615 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
7452cf6a
AL
2616 const unsigned int optname = (unsigned int) POPi;
2617 const unsigned int lvl = (unsigned int) POPi;
159b6efe 2618 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2619 IO * const io = GvIOn(gv);
a0d0e21e 2620 int fd;
1e422769 2621 Sock_size_t len;
a0d0e21e 2622
a0d0e21e
LW
2623 if (!io || !IoIFP(io))
2624 goto nuts;
2625
760ac839 2626 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW
2627 switch (optype) {
2628 case OP_GSOCKOPT:
748a9306 2629 SvGROW(sv, 257);
a0d0e21e 2630 (void)SvPOK_only(sv);
748a9306
LW
2631 SvCUR_set(sv,256);
2632 *SvEND(sv) ='\0';
1e422769 2633 len = SvCUR(sv);
6ad3d225 2634 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2635 goto nuts2;
1e422769 2636 SvCUR_set(sv, len);
748a9306 2637 *SvEND(sv) ='\0';
a0d0e21e
LW
2638 PUSHs(sv);
2639 break;
2640 case OP_SSOCKOPT: {
1215b447
JH
2641#if defined(__SYMBIAN32__)
2642# define SETSOCKOPT_OPTION_VALUE_T void *
2643#else
2644# define SETSOCKOPT_OPTION_VALUE_T const char *
2645#endif
2646 /* XXX TODO: We need to have a proper type (a Configure probe,
2647 * etc.) for what the C headers think of the third argument of
2648 * setsockopt(), the option_value read-only buffer: is it
2649 * a "char *", or a "void *", const or not. Some compilers
2650 * don't take kindly to e.g. assuming that "char *" implicitly
2651 * promotes to a "void *", or to explicitly promoting/demoting
2652 * consts to non/vice versa. The "const void *" is the SUS
2653 * definition, but that does not fly everywhere for the above
2654 * reasons. */
2655 SETSOCKOPT_OPTION_VALUE_T buf;
1e422769
PP
2656 int aint;
2657 if (SvPOKp(sv)) {
2d8e6c8d 2658 STRLEN l;
1215b447 2659 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2d8e6c8d 2660 len = l;
1e422769 2661 }
56ee1660 2662 else {
a0d0e21e 2663 aint = (int)SvIV(sv);
1215b447 2664 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
a0d0e21e
LW
2665 len = sizeof(int);
2666 }
6ad3d225 2667 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2668 goto nuts2;
3280af22 2669 PUSHs(&PL_sv_yes);
a0d0e21e
LW
2670 }
2671 break;
2672 }
2673 RETURN;
2674
2675nuts:
fbcda526 2676 report_evil_fh(gv);
93189314 2677 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW
2678nuts2:
2679 RETPUSHUNDEF;
2680
a0d0e21e
LW
2681}
2682
a0d0e21e
LW
2683PP(pp_getpeername)
2684{
97aff369 2685 dVAR; dSP;
7452cf6a 2686 const int optype = PL_op->op_type;
159b6efe 2687 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2688 IO * const io = GvIOn(gv);
7452cf6a 2689 Sock_size_t len;
a0d0e21e
LW
2690 SV *sv;
2691 int fd;
a0d0e21e
LW
2692
2693 if (!io || !IoIFP(io))
2694 goto nuts;
2695
561b68a9 2696 sv = sv_2mortal(newSV(257));
748a9306 2697 (void)SvPOK_only(sv);
1e422769
PP
2698 len = 256;
2699 SvCUR_set(sv, len);
748a9306 2700 *SvEND(sv) ='\0';
760ac839 2701 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW
2702 switch (optype) {
2703 case OP_GETSOCKNAME:
6ad3d225 2704 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW
2705 goto nuts2;
2706 break;
2707 case OP_GETPEERNAME:
6ad3d225 2708 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2709 goto nuts2;
490ab354
JH
2710#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2711 {
2712 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";
2713 /* If the call succeeded, make sure we don't have a zeroed port/addr */
349d4f2f 2714 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2fbb330f 2715 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
490ab354 2716 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2717 goto nuts2;
490ab354
JH
2718 }
2719 }
2720#endif
a0d0e21e
LW
2721 break;
2722 }
13826f2c
CS
2723#ifdef BOGUS_GETNAME_RETURN
2724 /* Interactive Unix, getpeername() and getsockname()
2725 does not return valid namelen */
1e422769
PP
2726 if (len == BOGUS_GETNAME_RETURN)
2727 len = sizeof(struct sockaddr);
13826f2c 2728#endif
1e422769 2729 SvCUR_set(sv, len);
748a9306 2730 *SvEND(sv) ='\0';
a0d0e21e
LW
2731 PUSHs(sv);
2732 RETURN;
2733
2734nuts:
fbcda526 2735 report_evil_fh(gv);
93189314 2736 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW
2737nuts2:
2738 RETPUSHUNDEF;
7627e6d0 2739}
a0d0e21e 2740
a0d0e21e 2741#endif
a0d0e21e
LW
2742
2743/* Stat calls. */
2744
a0d0e21e
LW
2745PP(pp_stat)
2746{
97aff369 2747 dVAR;
39644a26 2748 dSP;
10edeb5d 2749 GV *gv = NULL;
55dd8d50 2750 IO *io = NULL;
54310121 2751 I32 gimme;
a0d0e21e 2752 I32 max = 13;
109c43ed 2753 SV* sv;
a0d0e21e 2754
109c43ed
FC
2755 if (PL_op->op_flags & OPf_REF ? (gv = cGVOP_gv, 1)
2756 : !!(sv=POPs, gv = MAYBE_DEREF_GV(sv))) {
8a4e5b40 2757 if (PL_op->op_type == OP_LSTAT) {
5d3e98de 2758 if (gv != PL_defgv) {
5d329e6e 2759 do_fstat_warning_check:
a2a5de95 2760 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
93fad930
FC
2761 "lstat() on filehandle%s%"SVf,
2762 gv ? " " : "",
2763 SVfARG(gv
bf29d05f
BF
2764 ? sv_2mortal(newSVhek(GvENAME_HEK(gv)))
2765 : &PL_sv_no));
5d3e98de 2766 } else if (PL_laststype != OP_LSTAT)
b042df57 2767 /* diag_listed_as: The stat preceding %s wasn't an lstat */
8a4e5b40 2768 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
8a4e5b40
DD
2769 }
2770
2dd78f96 2771 if (gv != PL_defgv) {
b8413ac3 2772 bool havefp;
0d5064f1 2773 do_fstat_have_io:
b8413ac3 2774 havefp = FALSE;
3280af22 2775 PL_laststype = OP_STAT;
0d5064f1 2776 PL_statgv = gv ? gv : (GV *)io;
76f68e9b 2777 sv_setpvs(PL_statname, "");
5228a96c 2778 if(gv) {
ad02613c 2779 io = GvIO(gv);
0d5064f1
FC
2780 }
2781 if (io) {
5228a96c
SP
2782 if (IoIFP(io)) {
2783 PL_laststatval =
2784 PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
8080e3c8 2785 havefp = TRUE;
5228a96c 2786 } else if (IoDIRP(io)) {
5228a96c 2787 PL_laststatval =
3497a01f 2788 PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache);
8080e3c8 2789 havefp = TRUE;
5228a96c
SP
2790 } else {
2791 PL_laststatval = -1;
2792 }
5228a96c 2793 }
05bb32d2 2794 else PL_laststatval = -1;
daa30a68 2795 if (PL_laststatval < 0 && !havefp) report_evil_fh(gv);
5228a96c
SP
2796 }
2797
9ddeeac9 2798 if (PL_laststatval < 0) {
a0d0e21e 2799 max = 0;
9ddeeac9 2800 }
a0d0e21e
LW
2801 }
2802 else {
109c43ed 2803 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2804 io = MUTABLE_IO(SvRV(sv));
ad02613c
SP
2805 if (PL_op->op_type == OP_LSTAT)
2806 goto do_fstat_warning_check;
2807 goto do_fstat_have_io;
2808 }
2809
4bac9ae4 2810 SvTAINTED_off(PL_statname); /* previous tainting irrelevant */
109c43ed 2811 sv_setpv(PL_statname, SvPV_nomg_const_nolen(sv));
a0714e2c 2812 PL_statgv = NULL;
533c011a
NIS
2813 PL_laststype = PL_op->op_type;
2814 if (PL_op->op_type == OP_LSTAT)
0510663f 2815 PL_laststatval = PerlLIO_lstat(SvPV_nolen_const(PL_statname), &PL_statcache);
a0d0e21e 2816 else
0510663f 2817 PL_laststatval = PerlLIO_stat(SvPV_nolen_const(PL_statname), &PL_statcache);
3280af22 2818 if (PL_laststatval < 0) {
0510663f 2819 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname), '\n'))
9014280d 2820 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
a0d0e21e
LW
2821 max = 0;
2822 }
2823 }
2824
54310121
PP
2825 gimme = GIMME_V;
2826 if (gimme != G_ARRAY) {
2827 if (gimme != G_VOID)
2828 XPUSHs(boolSV(max));
2829 RETURN;
a0d0e21e
LW
2830 }
2831 if (max) {
36477c24
PP
2832 EXTEND(SP, max);
2833 EXTEND_MORTAL(max);
6e449a3a 2834 mPUSHi(PL_statcache.st_dev);
8d8cba88
TC
2835#if ST_INO_SIZE > IVSIZE
2836 mPUSHn(PL_statcache.st_ino);
2837#else
2838# if ST_INO_SIGN <= 0
6e449a3a 2839 mPUSHi(PL_statcache.st_ino);
8d8cba88
TC
2840# else
2841 mPUSHu(PL_statcache.st_ino);
2842# endif
2843#endif
6e449a3a
MHM
2844 mPUSHu(PL_statcache.st_mode);
2845 mPUSHu(PL_statcache.st_nlink);
dfff4baf
BF
2846
2847 sv_setuid(PUSHmortal, PL_statcache.st_uid);
2848 sv_setgid(PUSHmortal, PL_statcache.st_gid);
2849
cbdc8872 2850#ifdef USE_STAT_RDEV
6e449a3a 2851 mPUSHi(PL_statcache.st_rdev);
cbdc8872 2852#else
84bafc02 2853 PUSHs(newSVpvs_flags("", SVs_TEMP));
cbdc8872 2854#endif
146174a9 2855#if Off_t_size > IVSIZE
6e449a3a 2856 mPUSHn(PL_statcache.st_size);
146174a9 2857#else
6e449a3a 2858 mPUSHi(PL_statcache.st_size);
146174a9 2859#endif
cbdc8872 2860#ifdef BIG_TIME
6e449a3a
MHM
2861 mPUSHn(PL_statcache.st_atime);
2862 mPUSHn(PL_statcache.st_mtime);
2863 mPUSHn(PL_statcache.st_ctime);
cbdc8872 2864#else
6e449a3a
MHM
2865 mPUSHi(PL_statcache.st_atime);
2866 mPUSHi(PL_statcache.st_mtime);
2867 mPUSHi(PL_statcache.st_ctime);
cbdc8872 2868#endif
a0d0e21e 2869#ifdef USE_STAT_BLOCKS
6e449a3a
MHM
2870 mPUSHu(PL_statcache.st_blksize);
2871 mPUSHu(PL_statcache.st_blocks);
a0d0e21e 2872#else
84bafc02
NC
2873 PUSHs(newSVpvs_flags("", SVs_TEMP));
2874 PUSHs(newSVpvs_flags("", SVs_TEMP));
a0d0e21e
LW
2875#endif
2876 }
2877 RETURN;
2878}
2879
6c48f025
NC
2880/* All filetest ops avoid manipulating the perl stack pointer in their main
2881 bodies (since commit d2c4d2d1e22d3125), and return using either
2882 S_ft_return_false() or S_ft_return_true(). These two helper functions are
2883 the only two which manipulate the perl stack. To ensure that no stack
2884 manipulation macros are used, the filetest ops avoid defining a local copy
2885 of the stack pointer with dSP. */
2886
8db8f6b6
FC
2887/* If the next filetest is stacked up with this one
2888 (PL_op->op_private & OPpFT_STACKING), we leave
2889 the original argument on the stack for success,
2890 and skip the stacked operators on failure.
2891 The next few macros/functions take care of this.
2892*/
2893
2894static OP *
9a6b02e8 2895S_ft_return_false(pTHX_ SV *ret) {
8db8f6b6 2896 OP *next = NORMAL;
697f9d37
NC
2897 dSP;
2898
226b9201 2899 if (PL_op->op_flags & OPf_REF) XPUSHs(ret);
8db8f6b6
FC
2900 else SETs(ret);
2901 PUTBACK;
697f9d37 2902
9a6b02e8
NC
2903 if (PL_op->op_private & OPpFT_STACKING) {
2904 while (OP_IS_FILETEST(next->op_type)
2905 && next->op_private & OPpFT_STACKED)
2906 next = next->op_next;
2907 }
8db8f6b6
FC
2908 return next;
2909}
2910
07ed4d4b
NC
2911PERL_STATIC_INLINE OP *
2912S_ft_return_true(pTHX_ SV *ret) {
2913 dSP;
2914 if (PL_op->op_flags & OPf_REF)
2915 XPUSHs(PL_op->op_private & OPpFT_STACKING ? (SV *)cGVOP_gv : (ret));
2916 else if (!(PL_op->op_private & OPpFT_STACKING))
2917 SETs(ret);
2918 PUTBACK;
2919 return NORMAL;
2920}
8db8f6b6 2921
48d023d6
NC
2922#define FT_RETURNNO return S_ft_return_false(aTHX_ &PL_sv_no)
2923#define FT_RETURNUNDEF return S_ft_return_false(aTHX_ &PL_sv_undef)
2924#define FT_RETURNYES return S_ft_return_true(aTHX_ &PL_sv_yes)
8db8f6b6 2925
6f1401dc 2926#define tryAMAGICftest_MG(chr) STMT_START { \
d2f67720 2927 if ( (SvFLAGS(*PL_stack_sp) & (SVf_ROK|SVs_GMG)) \
8db8f6b6
FC
2928 && PL_op->op_flags & OPf_KIDS) { \
2929 OP *next = S_try_amagic_ftest(aTHX_ chr); \
2930 if (next) return next; \
2931 } \
6f1401dc
DM
2932 } STMT_END
2933
8db8f6b6 2934STATIC OP *
6f1401dc
DM
2935S_try_amagic_ftest(pTHX_ char chr) {
2936 dVAR;
d2f67720 2937 SV *const arg = *PL_stack_sp;
6f1401dc
DM
2938
2939 assert(chr != '?');
c5780028 2940 if (!(PL_op->op_private & OPpFT_STACKING)) SvGETMAGIC(arg);
6f1401dc 2941
d2f67720 2942 if (SvAMAGIC(arg))
6f1401dc
DM
2943 {
2944 const char tmpchr = chr;
6f1401dc
DM
2945 SV * const tmpsv = amagic_call(arg,
2946 newSVpvn_flags(&tmpchr, 1, SVs_TEMP),
2947 ftest_amg, AMGf_unary);
2948
2949 if (!tmpsv)
8db8f6b6 2950 return NULL;
6f1401dc 2951
48d023d6
NC
2952 return SvTRUE(tmpsv)
2953 ? S_ft_return_true(aTHX_ tmpsv) : S_ft_return_false(aTHX_ tmpsv);
6f1401dc 2954 }
8db8f6b6 2955 return NULL;
6f1401dc
DM
2956}
2957
2958
a0d0e21e
LW
2959PP(pp_ftrread)
2960{
97aff369 2961 dVAR;
9cad6237 2962 I32 result;
af9e49b4
NC
2963 /* Not const, because things tweak this below. Not bool, because there's
2964 no guarantee that OPp_FT_ACCESS is <= CHAR_MAX */
2965#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2966 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
2967 /* Giving some sort of initial value silences compilers. */
2968# ifdef R_OK
2969 int access_mode = R_OK;
2970# else
2971 int access_mode = 0;
2972# endif
5ff3f7a4 2973#else
af9e49b4
NC
2974 /* access_mode is never used, but leaving use_access in makes the
2975 conditional compiling below much clearer. */
2976 I32 use_access = 0;
5ff3f7a4 2977#endif
2dcac756 2978 Mode_t stat_mode = S_IRUSR;
a0d0e21e 2979
af9e49b4 2980 bool effective = FALSE;
07fe7c6a 2981 char opchar = '?';
af9e49b4 2982
7fb13887
BM
2983 switch (PL_op->op_type) {
2984 case OP_FTRREAD: opchar = 'R'; break;
2985 case OP_FTRWRITE: opchar = 'W'; break;
2986 case OP_FTREXEC: opchar = 'X'; break;
2987 case OP_FTEREAD: opchar = 'r'; break;
2988 case OP_FTEWRITE: opchar = 'w'; break;
2989 case OP_FTEEXEC: opchar = 'x'; break;
2990 }
6f1401dc 2991 tryAMAGICftest_MG(opchar);
7fb13887 2992
af9e49b4
NC
2993 switch (PL_op->op_type) {
2994 case OP_FTRREAD:
2995#if !(defined(HAS_ACCESS) && defined(R_OK))
2996 use_access = 0;
2997#endif
2998 break;
2999
3000 case OP_FTRWRITE:
5ff3f7a4 3001#if defined(HAS_ACCESS) && defined(W_OK)
af9e49b4 3002 access_mode = W_OK;
5ff3f7a4 3003#else
af9e49b4 3004 use_access = 0;
5ff3f7a4 3005#endif
af9e49b4
NC
3006 stat_mode = S_IWUSR;
3007 break;
a0d0e21e 3008
af9e49b4 3009 case OP_FTREXEC:
5ff3f7a4 3010#if defined(HAS_ACCESS) && defined(X_OK)
af9e49b4 3011 access_mode = X_OK;
5ff3f7a4 3012#else
af9e49b4 3013 use_access = 0;
5ff3f7a4 3014#endif
af9e49b4
NC
3015 stat_mode = S_IXUSR;
3016 break;
a0d0e21e 3017
af9e49b4 3018 case OP_FTEWRITE:
faee0e31 3019#ifdef PERL_EFF_ACCESS
af9e49b4 3020 access_mode = W_OK;
5ff3f7a4 3021#endif
af9e49b4 3022 stat_mode = S_IWUSR;
7fb13887 3023 /* fall through */
a0d0e21e 3024
af9e49b4
NC
3025 case OP_FTEREAD:
3026#ifndef PERL_EFF_ACCESS
3027 use_access = 0;
3028#endif
3029 effective = TRUE;
3030 break;
3031
af9e49b4 3032 case OP_FTEEXEC:
faee0e31 3033#ifdef PERL_EFF_ACCESS
b376053d 3034 access_mode = X_OK;
5ff3f7a4 3035#else
af9e49b4 3036 use_access = 0;
5ff3f7a4 3037#endif
af9e49b4
NC
3038 stat_mode = S_IXUSR;
3039 effective = TRUE;
3040 break;
3041 }
a0d0e21e 3042
af9e49b4
NC
3043 if (use_access) {
3044#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
d2f67720 3045 const char *name = SvPV_nolen(*PL_stack_sp);
af9e49b4
NC
3046 if (effective) {
3047# ifdef PERL_EFF_ACCESS
3048 result = PERL_EFF_ACCESS(name, access_mode);
3049# else
3050 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
3051 OP_NAME(PL_op));
3052# endif
3053 }
3054 else {
3055# ifdef HAS_ACCESS
3056 result = access(name, access_mode);
3057# else
3058 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
3059# endif
3060 }
5ff3f7a4 3061 if (result == 0)
d2c4d2d1 3062 FT_RETURNYES;
5ff3f7a4 3063 if (result < 0)
d2c4d2d1
FC
3064 FT_RETURNUNDEF;
3065 FT_RETURNNO;
af9e49b4 3066#endif
22865c03 3067 }
af9e49b4 3068
40c852de 3069 result = my_stat_flags(0);
a0d0e21e 3070 if (result < 0)
8db8f6b6 3071 FT_RETURNUNDEF;
af9e49b4 3072 if (cando(stat_mode, effective, &PL_statcache))
8db8f6b6
FC
3073 FT_RETURNYES;
3074 FT_RETURNNO;
a0d0e21e
LW
3075}
3076
3077PP(pp_ftis)
3078{
97aff369 3079 dVAR;
fbb0b3b3 3080 I32 result;
d7f0a2f4 3081 const int op_type = PL_op->op_type;
07fe7c6a 3082 char opchar = '?';
07fe7c6a
BM
3083
3084 switch (op_type) {
3085 case OP_FTIS: opchar = 'e'; break;
3086 case OP_FTSIZE: opchar = 's'; break;
3087 case OP_FTMTIME: opchar = 'M'; break;
3088 case OP_FTCTIME: opchar = 'C'; break;
3089 case OP_FTATIME: opchar = 'A'; break;
3090 }
6f1401dc 3091 tryAMAGICftest_MG(opchar);
07fe7c6a 3092
40c852de 3093 result = my_stat_flags(0);
a0d0e21e 3094 if (result < 0)
8db8f6b6 3095 FT_RETURNUNDEF;
d7f0a2f4 3096 if (op_type == OP_FTIS)
8db8f6b6 3097 FT_RETURNYES;
957b0e1d 3098 {
d7f0a2f4
NC
3099 /* You can't dTARGET inside OP_FTIS, because you'll get
3100 "panic: pad_sv po" - the op is not flagged to have a target. */
957b0e1d 3101 dTARGET;
d7f0a2f4 3102 switch (op_type) {
957b0e1d
NC
3103 case OP_FTSIZE:
3104#if Off_t_size > IVSIZE
8db8f6b6 3105 sv_setnv(TARG, (NV)PL_statcache.st_size);
957b0e1d 3106#else
8db8f6b6 3107 sv_setiv(TARG, (IV)PL_statcache.st_size);
957b0e1d
NC
3108#endif
3109 break;
3110 case OP_FTMTIME:
8db8f6b6
FC
3111 sv_setnv(TARG,
3112 ((NV)PL_basetime - PL_statcache.st_mtime) / 86400.0 );
957b0e1d
NC
3113 break;
3114 case OP_FTATIME:
8db8f6b6
FC
3115 sv_setnv(TARG,
3116 ((NV)PL_basetime - PL_statcache.st_atime) / 86400.0 );
957b0e1d
NC
3117 break;
3118 case OP_FTCTIME:
8db8f6b6
FC
3119 sv_setnv(TARG,
3120 ((NV)PL_basetime - PL_statcache.st_ctime) / 86400.0 );
957b0e1d
NC
3121 break;
3122 }
8db8f6b6 3123 SvSETMAGIC(TARG);
48d023d6
NC
3124 return SvTRUE_nomg(TARG)
3125 ? S_ft_return_true(aTHX_ TARG) : S_ft_return_false(aTHX_ TARG);
957b0e1d 3126 }
a0d0e21e
LW
3127}
3128
a0d0e21e
LW
3129PP(pp_ftrowned)
3130{
97aff369 3131 dVAR;
fbb0b3b3 3132 I32 result;
07fe7c6a 3133 char opchar = '?';
17ad201a 3134
7fb13887
BM
3135 switch (PL_op->op_type) {
3136 case OP_FTROWNED: opchar = 'O'; break;
3137 case OP_FTEOWNED: opchar = 'o'; break;
3138 case OP_FTZERO: opchar = 'z'; break;
3139 case OP_FTSOCK: opchar = 'S'; break;
3140 case OP_FTCHR: opchar = 'c'; break;
3141 case OP_FTBLK: opchar = 'b'; break;
3142 case OP_FTFILE: opchar = 'f'; break;
3143 case OP_FTDIR: opchar = 'd'; break;
3144 case OP_FTPIPE: opchar = 'p'; break;
3145 case OP_FTSUID: opchar = 'u'; break;
3146 case OP_FTSGID: opchar = 'g'; break;
3147 case OP_FTSVTX: opchar = 'k'; break;
3148 }
6f1401dc 3149 tryAMAGICftest_MG(opchar);
7fb13887 3150
17ad201a
NC
3151 /* I believe that all these three are likely to be defined on most every
3152 system these days. */
3153#ifndef S_ISUID
c410dd6a 3154 if(PL_op->op_type == OP_FTSUID) {
8db8f6b6 3155 FT_RETURNNO;
c410dd6a 3156 }
17ad201a
NC
3157#endif
3158#ifndef S_ISGID
c410dd6a 3159 if(PL_op->op_type == OP_FTSGID) {
8db8f6b6 3160 FT_RETURNNO;
c410dd6a 3161 }
17ad201a
NC
3162#endif
3163#ifndef S_ISVTX
c410dd6a 3164 if(PL_op->op_type == OP_FTSVTX) {
8db8f6b6 3165 FT_RETURNNO;
c410dd6a 3166 }
17ad201a
NC
3167#endif
3168
40c852de 3169 result = my_stat_flags(0);
a0d0e21e 3170 if (result < 0)
8db8f6b6 3171 FT_RETURNUNDEF;
f1cb2d48
NC
3172 switch (PL_op->op_type) {
3173 case OP_FTROWNED:
985213f2 3174 if (PL_statcache.st_uid == PerlProc_getuid())
8db8f6b6 3175 FT_RETURNYES;
f1cb2d48
NC
3176 break;
3177 case OP_FTEOWNED:
985213f2 3178 if (PL_statcache.st_uid == PerlProc_geteuid())
8db8f6b6 3179 FT_RETURNYES;
f1cb2d48
NC
3180 break;
3181 case OP_FTZERO:
3182 if (PL_statcache.st_size == 0)
8db8f6b6 3183 FT_RETURNYES;
f1cb2d48
NC
3184 break;
3185 case OP_FTSOCK:
3186 if (S_ISSOCK(PL_statcache.st_mode))
8db8f6b6 3187 FT_RETURNYES;
f1cb2d48
NC
3188 break;
3189 case OP_FTCHR:
3190 if (S_ISCHR(PL_statcache.st_mode))
8db8f6b6 3191 FT_RETURNYES;
f1cb2d48
NC
3192 break;
3193 case OP_FTBLK:
3194 if (S_ISBLK(PL_statcache.st_mode))
8db8f6b6 3195 FT_RETURNYES;
f1cb2d48
NC
3196 break;
3197 case OP_FTFILE:
3198 if (S_ISREG(PL_statcache.st_mode))
8db8f6b6 3199 FT_RETURNYES;
f1cb2d48
NC
3200 break;
3201 case OP_FTDIR:
3202 if (S_ISDIR(PL_statcache.st_mode))
8db8f6b6 3203 FT_RETURNYES;
f1cb2d48
NC
3204 break;
3205 case OP_FTPIPE:
3206 if (S_ISFIFO(PL_statcache.st_mode))
8db8f6b6 3207 FT_RETURNYES;
f1cb2d48 3208 break;
a0d0e21e 3209#ifdef S_ISUID
17ad201a
NC
3210 case OP_FTSUID:
3211 if (PL_statcache.st_mode & S_ISUID)
8db8f6b6 3212 FT_RETURNYES;
17ad201a 3213 break;
a0d0e21e 3214#endif
a0d0e21e 3215#ifdef S_ISGID
17ad201a
NC
3216 case OP_FTSGID:
3217 if (PL_statcache.st_mode & S_ISGID)
8db8f6b6 3218 FT_RETURNYES;
17ad201a
NC
3219 break;
3220#endif
3221#ifdef S_ISVTX
3222 case OP_FTSVTX:
3223 if (PL_statcache.st_mode & S_ISVTX)
8db8f6b6 3224 FT_RETURNYES;
17ad201a 3225 break;
a0d0e21e 3226#endif
17ad201a 3227 }
8db8f6b6 3228 FT_RETURNNO;
a0d0e21e
LW
3229}
3230
17ad201a 3231PP(pp_ftlink)
a0d0e21e 3232{
97aff369 3233 dVAR;
500ff13f 3234 I32 result;
07fe7c6a 3235
6f1401dc 3236 tryAMAGICftest_MG('l');
40c852de 3237 result = my_lstat_flags(0);
500ff13f 3238
a0d0e21e 3239 if (result < 0)
8db8f6b6 3240 FT_RETURNUNDEF;
17ad201a 3241 if (S_ISLNK(PL_statcache.st_mode))
8db8f6b6
FC
3242 FT_RETURNYES;
3243 FT_RETURNNO;
a0d0e21e
LW
3244}
3245
3246PP(pp_fttty)
3247{
97aff369 3248 dVAR;
a0d0e21e
LW
3249 int fd;
3250 GV *gv;
0784aae0 3251 char *name = NULL;
40c852de 3252 STRLEN namelen;
fb73857a 3253
6f1401dc 3254 tryAMAGICftest_MG('t');
07fe7c6a 3255
533c011a 3256 if (PL_op->op_flags & OPf_REF)
146174a9 3257 gv = cGVOP_gv;
e5e154d2 3258 else {
d2f67720 3259 SV *tmpsv = *PL_stack_sp;
e5e154d2 3260 if (!(gv = MAYBE_DEREF_GV_nomg(tmpsv))) {
40c852de
DM
3261 name = SvPV_nomg(tmpsv, namelen);
3262 gv = gv_fetchpvn_flags(name, namelen, SvUTF8(tmpsv), SVt_PVIO);
e5e154d2 3263 }
40c852de 3264 }
fb73857a 3265
a0d0e21e 3266 if (GvIO(gv) && IoIFP(GvIOp(gv)))
760ac839 3267 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
b6cb94c5 3268 else if (name && isDIGIT(*name))
40c852de 3269 fd = atoi(name);
a0d0e21e 3270 else
8db8f6b6 3271 FT_RETURNUNDEF;
6ad3d225 3272 if (PerlLIO_isatty(fd))
8db8f6b6
FC
3273 FT_RETURNYES;
3274 FT_RETURNNO;
a0d0e21e
LW
3275}
3276
a0d0e21e
LW
3277PP(pp_fttext)
3278{
97aff369 3279 dVAR;
a0d0e21e
LW
3280 I32 i;
3281 I32 len;
3282 I32 odd = 0;
3283 STDCHAR tbuf[512];
eb578fdb
KW
3284 STDCHAR *s;
3285 IO *io;
3286 SV *sv = NULL;
5f05dabc 3287 GV *gv;
146174a9 3288 PerlIO *fp;
a0d0e21e 3289
6f1401dc 3290 tryAMAGICftest_MG(PL_op->op_type == OP_FTTEXT ? 'T' : 'B');
07fe7c6a 3291
533c011a 3292 if (PL_op->op_flags & OPf_REF)
146174a9 3293 gv = cGVOP_gv;
d2c4d2d1 3294 else if ((PL_op->op_private & (OPpFT_STACKED|OPpFT_AFTER_t))
8db8f6b6 3295 == OPpFT_STACKED)
ba8182f8 3296 gv = PL_defgv;
d2c4d2d1 3297 else {
d2f67720 3298 sv = *PL_stack_sp;
d2c4d2d1 3299 gv = MAYBE_DEREF_GV_nomg(sv);
8db8f6b6 3300 }
5f05dabc
PP
3301
3302 if (gv) {
3280af22
NIS
3303 if (gv == PL_defgv) {
3304 if (PL_statgv)
bd5f6c01
FC
3305 io = SvTYPE(PL_statgv) == SVt_PVIO
3306 ? (IO *)PL_statgv
3307 : GvIO(PL_statgv);
a0d0e21e 3308 else {
a0d0e21e
LW
3309 goto really_filename;
3310 }
3311 }
3312 else {
3280af22 3313 PL_statgv = gv;
76f68e9b 3314 sv_setpvs(PL_statname, "");
3280af22 3315 io = GvIO(PL_statgv);
a0d0e21e 3316 }
eb4c377a 3317 PL_laststatval = -1;
21a64c3e 3318 PL_laststype = OP_STAT;
a0d0e21e 3319 if (io && IoIFP(io)) {
5f05dabc 3320 if (! PerlIO_has_base(IoIFP(io)))
cea2e8a9 3321 DIE(aTHX_ "-T and -B not implemented on filehandles");
3280af22
NIS
3322 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3323 if (PL_laststatval < 0)
8db8f6b6 3324 FT_RETURNUNDEF;
9cbac4c7 3325 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
533c011a 3326 if (PL_op->op_type == OP_FTTEXT)
8db8f6b6 3327 FT_RETURNNO;
a0d0e21e 3328 else
8db8f6b6 3329 FT_RETURNYES;
9cbac4c7 3330 }
a20bf0c3 3331 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
760ac839 3332 i = PerlIO_getc(IoIFP(io));
a0d0e21e 3333 if (i != EOF)
760ac839 3334 (void)PerlIO_ungetc(IoIFP(io),i);
a0d0e21e 3335 }
a20bf0c3 3336 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
8db8f6b6 3337 FT_RETURNYES;
a20bf0c3
JH
3338 len = PerlIO_get_bufsiz(IoIFP(io));
3339 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
760ac839
LW
3340 /* sfio can have large buffers - limit to 512 */
3341 if (len > 512)
3342 len = 512;
a0d0e21e
LW
3343 }
3344 else {
2ad48547 3345 SETERRNO(EBADF,RMS_IFI);
3f12cff4 3346 report_evil_fh(gv);
93189314 3347 SETERRNO(EBADF,RMS_IFI);
8db8f6b6 3348 FT_RETURNUNDEF;
a0d0e21e
LW
3349 }
3350 }
3351 else {
81e9306f 3352 sv_setpv(PL_statname, SvPV_nomg_const_nolen(sv));
5f05dabc 3353 really_filename:
a0714e2c 3354 PL_statgv = NULL;
aa07b2f6 3355 if (!(fp = PerlIO_open(SvPVX_const(PL_statname), "r"))) {
ad2d99e3
FC
3356 if (!gv) {
3357 PL_laststatval = -1;
3358 PL_laststype = OP_STAT;
3359 }
349d4f2f
NC
3360 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname),
3361 '\n'))
9014280d 3362 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
8db8f6b6 3363 FT_RETURNUNDEF;