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[perl5.git] / pp_sys.c
CommitLineData
a0d0e21e
LW		 1/* pp_sys.c
2 *
fdf8c088 3 * Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
1129b882 4 * 2004, 2005, 2006, 2007, 2008 by Larry Wall and others
a0d0e21e
LW		 5 *
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
8 *
9 */
10
11/*
12 * But only a short way ahead its floor and the walls on either side were
13 * cloven by a great fissure, out of which the red glare came, now leaping
14 * up, now dying down into darkness; and all the while far below there was
15 * a rumour and a trouble as of great engines throbbing and labouring.
4ac71550
TC		 16 *
17 * [p.945 of _The Lord of the Rings_, VI/iii: "Mount Doom"]
a0d0e21e
LW		 18 */
19
166f8a29
DM		 20/* This file contains system pp ("push/pop") functions that
21 * execute the opcodes that make up a perl program. A typical pp function
22 * expects to find its arguments on the stack, and usually pushes its
23 * results onto the stack, hence the 'pp' terminology. Each OP structure
24 * contains a pointer to the relevant pp_foo() function.
25 *
26 * By 'system', we mean ops which interact with the OS, such as pp_open().
27 */
28
a0d0e21e 29#include "EXTERN.h"
864dbfa3 30#define PERL_IN_PP_SYS_C
a0d0e21e 31#include "perl.h"
d95a2ea5
CB		 32#include "time64.h"
33#include "time64.c"
a0d0e21e 34
f1066039
JH		 35#ifdef I_SHADOW
36/* Shadow password support for solaris - pdo@cs.umd.edu
37 * Not just Solaris: at least HP-UX, IRIX, Linux.
3813c136
JH		 38 * The API is from SysV.
39 *
40 * There are at least two more shadow interfaces,
41 * see the comments in pp_gpwent().
42 *
43 * --jhi */
44# ifdef __hpux__
c529f79d 45/* There is a MAXINT coming from <shadow.h> <- <hpsecurity.h> <- <values.h>
301e8125 46 * and another MAXINT from "perl.h" <- <sys/param.h>. */
3813c136
JH		 47# undef MAXINT
48# endif
49# include <shadow.h>
8c0bfa08
PB		 50#endif
51
76c32331 52#ifdef I_SYS_RESOURCE
53# include <sys/resource.h>
16d20bd9 54#endif
a0d0e21e 55
2986a63f
JH		 56#ifdef NETWARE
57NETDB_DEFINE_CONTEXT
58#endif
59
a0d0e21e 60#ifdef HAS_SELECT
1e743fda
JH		 61# ifdef I_SYS_SELECT
62# include <sys/select.h>
63# endif
a0d0e21e 64#endif
a0d0e21e 65
dc45a647
MB		 66/* XXX Configure test needed.
67 h_errno might not be a simple 'int', especially for multi-threaded
5ff3f7a4
GS		 68 applications, see "extern int errno in perl.h". Creating such
69 a test requires taking into account the differences between
70 compiling multithreaded and singlethreaded ($ccflags et al).
71 HOST_NOT_FOUND is typically defined in <netdb.h>.
dc45a647 72*/
cb50131a 73#if defined(HOST_NOT_FOUND) && !defined(h_errno) && !defined(__CYGWIN__)
a0d0e21e
LW		 74extern int h_errno;
75#endif
76
77#ifdef HAS_PASSWD
78# ifdef I_PWD
79# include <pwd.h>
80# else
fd8cd3a3 81# if !defined(VMS)
20ce7b12
GS		 82 struct passwd *getpwnam (char *);
83 struct passwd *getpwuid (Uid_t);
fd8cd3a3 84# endif
a0d0e21e 85# endif
28e8609d 86# ifdef HAS_GETPWENT
10bc17b6 87#ifndef getpwent
20ce7b12 88 struct passwd *getpwent (void);
c2a8f790 89#elif defined (VMS) && defined (my_getpwent)
9fa802f3 90 struct passwd *Perl_my_getpwent (pTHX);
10bc17b6 91#endif
28e8609d 92# endif
a0d0e21e
LW		 93#endif
94
95#ifdef HAS_GROUP
96# ifdef I_GRP
97# include <grp.h>
98# else
20ce7b12
GS		 99 struct group *getgrnam (char *);
100 struct group *getgrgid (Gid_t);
a0d0e21e 101# endif
28e8609d 102# ifdef HAS_GETGRENT
10bc17b6 103#ifndef getgrent
20ce7b12 104 struct group *getgrent (void);
10bc17b6 105#endif
28e8609d 106# endif
a0d0e21e
LW		 107#endif
108
109#ifdef I_UTIME
3730b96e 110# if defined(_MSC_VER) || defined(__MINGW32__)
3fe9a6f1 111# include <sys/utime.h>
112# else
113# include <utime.h>
114# endif
a0d0e21e 115#endif
a0d0e21e 116
cbdc8872 117#ifdef HAS_CHSIZE
cd52b7b2 118# ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
119# undef my_chsize
120# endif
72cc7e2a 121# define my_chsize PerlLIO_chsize
27da23d5
JH		 122#else
123# ifdef HAS_TRUNCATE
124# define my_chsize PerlLIO_chsize
125# else
126I32 my_chsize(int fd, Off_t length);
127# endif
cbdc8872 128#endif
129
ff68c719 130#ifdef HAS_FLOCK
131# define FLOCK flock
132#else /* no flock() */
133
36477c24 134 /* fcntl.h might not have been included, even if it exists, because
135 the current Configure only sets I_FCNTL if it's needed to pick up
136 the *_OK constants. Make sure it has been included before testing
137 the fcntl() locking constants. */
138# if defined(HAS_FCNTL) && !defined(I_FCNTL)
139# include <fcntl.h>
140# endif
141
9d9004a9 142# if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
ff68c719 143# define FLOCK fcntl_emulate_flock
144# define FCNTL_EMULATE_FLOCK
145# else /* no flock() or fcntl(F_SETLK,...) */
146# ifdef HAS_LOCKF
147# define FLOCK lockf_emulate_flock
148# define LOCKF_EMULATE_FLOCK
149# endif /* lockf */
150# endif /* no flock() or fcntl(F_SETLK,...) */
151
152# ifdef FLOCK
20ce7b12 153 static int FLOCK (int, int);
ff68c719 154
155 /*
156 * These are the flock() constants. Since this sytems doesn't have
157 * flock(), the values of the constants are probably not available.
158 */
159# ifndef LOCK_SH
160# define LOCK_SH 1
161# endif
162# ifndef LOCK_EX
163# define LOCK_EX 2
164# endif
165# ifndef LOCK_NB
166# define LOCK_NB 4
167# endif
168# ifndef LOCK_UN
169# define LOCK_UN 8
170# endif
171# endif /* emulating flock() */
172
173#endif /* no flock() */
55497cff 174
85ab1d1d 175#define ZBTLEN 10
27da23d5 176static const char zero_but_true[ZBTLEN + 1] = "0 but true";
85ab1d1d 177
5ff3f7a4
GS		 178#if defined(I_SYS_ACCESS) && !defined(R_OK)
179# include <sys/access.h>
180#endif
181
c529f79d
CB		 182#if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
183# define FD_CLOEXEC 1 /* NeXT needs this */
184#endif
185
a4af207c
JH		 186#include "reentr.h"
187
9cffb111
OS		 188#ifdef __Lynx__
189/* Missing protos on LynxOS */
190void sethostent(int);
191void endhostent(void);
192void setnetent(int);
193void endnetent(void);
194void setprotoent(int);
195void endprotoent(void);
196void setservent(int);
197void endservent(void);
198#endif
199
faee0e31 200#undef PERL_EFF_ACCESS /* EFFective uid/gid ACCESS */
5ff3f7a4
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 319 }
320 else if (gimme == G_SCALAR) {
d343c3ef 321 ENTER_with_name("backtick");
75af1a9c 322 SAVESPTR(PL_rs);
fa326138 323 PL_rs = &PL_sv_undef;
76f68e9b 324 sv_setpvs(TARG, ""); /* note that this preserves previous buffer */
bd61b366 325 while (sv_gets(TARG, fp, SvCUR(TARG)) != NULL)
a79db61d 326 NOOP;
d343c3ef 327 LEAVE_with_name("backtick");
a0d0e21e 328 XPUSHs(TARG);
aa689395 329 SvTAINTED_on(TARG);
a0d0e21e
LW		 330 }
331 else {
a0d0e21e 332 for (;;) {
561b68a9 333 SV * const sv = newSV(79);
bd61b366 334 if (sv_gets(sv, fp, 0) == NULL) {
a0d0e21e
LW		 335 SvREFCNT_dec(sv);
336 break;
337 }
6e449a3a 338 mXPUSHs(sv);
a0d0e21e 339 if (SvLEN(sv) - SvCUR(sv) > 20) {
1da4ca5f 340 SvPV_shrink_to_cur(sv);
a0d0e21e 341 }
aa689395 342 SvTAINTED_on(sv);
a0d0e21e
LW		 343 }
344 }
2fbb330f 345 STATUS_NATIVE_CHILD_SET(PerlProc_pclose(fp));
aa689395 346 TAINT; /* "I believe that this is not gratuitous!" */
a0d0e21e
LW		 347 }
348 else {
37038d91 349 STATUS_NATIVE_CHILD_SET(-1);
54310121 350 if (gimme == G_SCALAR)
a0d0e21e
LW		 351 RETPUSHUNDEF;
352 }
353
354 RETURN;
355}
356
357PP(pp_glob)
358{
27da23d5 359 dVAR;
a0d0e21e 360 OP *result;
9426e1a5 361 dSP;
151cea25
FC		 362 /* make a copy of the pattern if it is gmagical, to ensure that magic
363 * is called once and only once */
364 if (SvGMAGICAL(TOPm1s)) TOPm1s = sv_2mortal(newSVsv(TOPm1s));
9426e1a5 365
67288365 366 tryAMAGICunTARGETlist(iter_amg, -1, (PL_op->op_flags & OPf_SPECIAL));
d1bea3d8
DM		 367
368 if (PL_op->op_flags & OPf_SPECIAL) {
369 /* call Perl-level glob function instead. Stack args are:
370 * MARK, wildcard, csh_glob context index
371 * and following OPs should be: gv(CORE::GLOBAL::glob), entersub
372 * */
373 return NORMAL;
374 }
375 /* stack args are: wildcard, gv(_GEN_n) */
376
d67594ff
FC		 377 if (PL_globhook) {
378 SETs(GvSV(TOPs));
379 PL_globhook(aTHX);
380 return NORMAL;
381 }
f5284f61 382
71686f12
GS		 383 /* Note that we only ever get here if File::Glob fails to load
384 * without at the same time croaking, for some reason, or if
385 * perl was built with PERL_EXTERNAL_GLOB */
386
d343c3ef 387 ENTER_with_name("glob");
a0d0e21e 388
c90c0ff4 389#ifndef VMS
3280af22 390 if (PL_tainting) {
7bac28a0 391 /*
392 * The external globbing program may use things we can't control,
393 * so for security reasons we must assume the worst.
394 */
395 TAINT;
22c35a8c 396 taint_proper(PL_no_security, "glob");
7bac28a0 397 }
c90c0ff4 398#endif /* !VMS */
7bac28a0 399
3280af22 400 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
159b6efe 401 PL_last_in_gv = MUTABLE_GV(*PL_stack_sp--);
a0d0e21e 402
3280af22 403 SAVESPTR(PL_rs); /* This is not permanent, either. */
84bafc02 404 PL_rs = newSVpvs_flags("\000", SVs_TEMP);
c07a80fd 405#ifndef DOSISH
406#ifndef CSH
6b88bc9c 407 *SvPVX(PL_rs) = '\n';
a0d0e21e 408#endif /* !CSH */
55497cff 409#endif /* !DOSISH */
c07a80fd 410
a0d0e21e 411 result = do_readline();
d343c3ef 412 LEAVE_with_name("glob");
a0d0e21e
LW		 413 return result;
414}
415
a0d0e21e
LW		 416PP(pp_rcatline)
417{
97aff369 418 dVAR;
146174a9 419 PL_last_in_gv = cGVOP_gv;
a0d0e21e
LW		 420 return do_readline();
421}
422
423PP(pp_warn)
424{
97aff369 425 dVAR; dSP; dMARK;
c5df3096 426 SV *exsv;
06bf62c7 427 STRLEN len;
b59aed67 428 if (SP - MARK > 1) {
a0d0e21e 429 dTARGET;
3280af22 430 do_join(TARG, &PL_sv_no, MARK, SP);
c5df3096 431 exsv = TARG;
a0d0e21e
LW		 432 SP = MARK + 1;
433 }
b59aed67 434 else if (SP == MARK) {
c5df3096 435 exsv = &PL_sv_no;
b59aed67 436 EXTEND(SP, 1);
83f957ec 437 SP = MARK + 1;
b59aed67 438 }
a0d0e21e 439 else {
c5df3096 440 exsv = TOPs;
ef5fe392 441 if (SvGMAGICAL(exsv)) exsv = sv_mortalcopy(exsv);
a0d0e21e 442 }
06bf62c7 443
72d74926 444 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
c5df3096
Z		 445 /* well-formed exception supplied */
446 }
c5df3096 447 else {
ef5fe392
FC		 448 SvGETMAGIC(ERRSV);
449 if (SvROK(ERRSV)) {
450 if (SvGMAGICAL(ERRSV)) {
451 exsv = sv_newmortal();
452 sv_setsv_nomg(exsv, ERRSV);
453 }
454 else exsv = ERRSV;
455 }
b1d0a833 456 else if (SvPOKp(ERRSV) ? SvCUR(ERRSV) : SvNIOKp(ERRSV)) {
ef5fe392
FC		 457 exsv = sv_newmortal();
458 sv_setsv_nomg(exsv, ERRSV);
459 sv_catpvs(exsv, "\t...caught");
460 }
461 else {
c5df3096 462 exsv = newSVpvs_flags("Warning: something's wrong", SVs_TEMP);
ef5fe392 463 }
c5df3096 464 }
3b7f69a5
FC		 465 if (SvROK(exsv) && !PL_warnhook)
466 Perl_warn(aTHX_ "%"SVf, SVfARG(exsv));
467 else warn_sv(exsv);
a0d0e21e
LW		 468 RETSETYES;
469}
470
471PP(pp_die)
472{
97aff369 473 dVAR; dSP; dMARK;
c5df3096 474 SV *exsv;
06bf62c7 475 STRLEN len;
96e176bf
CL		 476#ifdef VMS
477 VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
478#endif
a0d0e21e
LW		 479 if (SP - MARK != 1) {
480 dTARGET;
3280af22 481 do_join(TARG, &PL_sv_no, MARK, SP);
c5df3096 482 exsv = TARG;
a0d0e21e
LW		 483 SP = MARK + 1;
484 }
485 else {
c5df3096 486 exsv = TOPs;
a0d0e21e 487 }
c5df3096 488
72d74926 489 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
c5df3096
Z		 490 /* well-formed exception supplied */
491 }
492 else if (SvROK(ERRSV)) {
493 exsv = ERRSV;
494 if (sv_isobject(exsv)) {
495 HV * const stash = SvSTASH(SvRV(exsv));
496 GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
497 if (gv) {
498 SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
499 SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
500 EXTEND(SP, 3);
501 PUSHMARK(SP);
502 PUSHs(exsv);
503 PUSHs(file);
504 PUSHs(line);
505 PUTBACK;
506 call_sv(MUTABLE_SV(GvCV(gv)),
507 G_SCALAR|G_EVAL|G_KEEPERR);
508 exsv = sv_mortalcopy(*PL_stack_sp--);
05423cc9 509 }
4e6ea2c3 510 }
a0d0e21e 511 }
05a1a014 512 else if (SvPV_const(ERRSV, len), len) {
c5df3096
Z		 513 exsv = sv_mortalcopy(ERRSV);
514 sv_catpvs(exsv, "\t...propagated");
515 }
516 else {
517 exsv = newSVpvs_flags("Died", SVs_TEMP);
518 }
9fed9930 519 return die_sv(exsv);
a0d0e21e
LW		 520}
521
522/* I/O. */
523
d682515d
NC		 524OP *
525Perl_tied_method(pTHX_ const char *const methname, SV **sp, SV *const sv,
526 const MAGIC *const mg, const U32 flags, U32 argc, ...)
6bcca55b 527{
d8ef3a16
DM		 528 SV **orig_sp = sp;
529 I32 ret_args;
530
d682515d 531 PERL_ARGS_ASSERT_TIED_METHOD;
6bcca55b
NC		 532
533 /* Ensure that our flag bits do not overlap. */
d682515d
NC		 534 assert((TIED_METHOD_MORTALIZE_NOT_NEEDED & G_WANT) == 0);
535 assert((TIED_METHOD_ARGUMENTS_ON_STACK & G_WANT) == 0);
94bc412f 536 assert((TIED_METHOD_SAY & G_WANT) == 0);
6bcca55b 537
d8ef3a16
DM		 538 PUTBACK; /* sp is at *foot* of args, so this pops args from old stack */
539 PUSHSTACKi(PERLSI_MAGIC);
540 EXTEND(SP, argc+1); /* object + args */
6bcca55b 541 PUSHMARK(sp);
d682515d 542 PUSHs(SvTIED_obj(sv, mg));
d8ef3a16
DM		 543 if (flags & TIED_METHOD_ARGUMENTS_ON_STACK) {
544 Copy(orig_sp + 2, sp + 1, argc, SV*); /* copy args to new stack */
1a8c1d59 545 sp += argc;
d8ef3a16 546 }
1a8c1d59 547 else if (argc) {
d682515d
NC		 548 const U32 mortalize_not_needed
549 = flags & TIED_METHOD_MORTALIZE_NOT_NEEDED;
6bcca55b 550 va_list args;
0d5509eb 551 va_start(args, argc);
6bcca55b
NC		 552 do {
553 SV *const arg = va_arg(args, SV *);
554 if(mortalize_not_needed)
555 PUSHs(arg);
556 else
557 mPUSHs(arg);
558 } while (--argc);
559 va_end(args);
560 }
561
562 PUTBACK;
d682515d 563 ENTER_with_name("call_tied_method");
94bc412f
NC		 564 if (flags & TIED_METHOD_SAY) {
565 /* local $\ = "\n" */
566 SAVEGENERICSV(PL_ors_sv);
567 PL_ors_sv = newSVpvs("\n");
568 }
d8ef3a16
DM		 569 ret_args = call_method(methname, flags & G_WANT);
570 SPAGAIN;
571 orig_sp = sp;
572 POPSTACK;
573 SPAGAIN;
574 if (ret_args) { /* copy results back to original stack */
575 EXTEND(sp, ret_args);
576 Copy(orig_sp - ret_args + 1, sp + 1, ret_args, SV*);
577 sp += ret_args;
578 PUTBACK;
579 }
d682515d 580 LEAVE_with_name("call_tied_method");
6bcca55b
NC		 581 return NORMAL;
582}
583
d682515d
NC		 584#define tied_method0(a,b,c,d) \
585 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,0)
586#define tied_method1(a,b,c,d,e) \
587 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,1,e)
588#define tied_method2(a,b,c,d,e,f) \
589 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,2,e,f)
6bcca55b 590
a0d0e21e
LW		 591PP(pp_open)
592{
27da23d5 593 dVAR; dSP;
a567e93b
NIS		 594 dMARK; dORIGMARK;
595 dTARGET;
a0d0e21e 596 SV *sv;
5b468f54 597 IO *io;
5c144d81 598 const char *tmps;
a0d0e21e 599 STRLEN len;
a567e93b 600 bool ok;
a0d0e21e 601
159b6efe 602 GV * const gv = MUTABLE_GV(*++MARK);
c4420975 603
13be902c 604 if (!isGV(gv) && !(SvTYPE(gv) == SVt_PVLV && isGV_with_GP(gv)))
cea2e8a9 605 DIE(aTHX_ PL_no_usym, "filehandle");
abc718f2 606
a79db61d 607 if ((io = GvIOp(gv))) {
a5e1d062 608 const MAGIC *mg;
36477c24 609 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
853846ea 610
a2a5de95 611 if (IoDIRP(io))
d1d15184 612 Perl_ck_warner_d(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
d0c0e7dd
FC		 613 "Opening dirhandle %"HEKf" also as a file",
614 HEKfARG(GvENAME_HEK(gv)));
abc718f2 615
ad64d0ec 616 mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
c4420975
AL		 617 if (mg) {
618 /* Method's args are same as ours ... */
619 /* ... except handle is replaced by the object */
d682515d
NC		 620 return Perl_tied_method(aTHX_ "OPEN", mark - 1, MUTABLE_SV(io), mg,
621 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
622 sp - mark);
c4420975 623 }
4592e6ca
NIS		 624 }
625
a567e93b
NIS		 626 if (MARK < SP) {
627 sv = *++MARK;
628 }
629 else {
35a08ec7 630 sv = GvSVn(gv);
a567e93b
NIS		 631 }
632
5c144d81 633 tmps = SvPV_const(sv, len);
4608196e 634 ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, NULL, MARK+1, (SP-MARK));
a567e93b
NIS		 635 SP = ORIGMARK;
636 if (ok)
3280af22
NIS		 637 PUSHi( (I32)PL_forkprocess );
638 else if (PL_forkprocess == 0) /* we are a new child */
a0d0e21e
LW		 639 PUSHi(0);
640 else
641 RETPUSHUNDEF;
642 RETURN;
643}
644
645PP(pp_close)
646{
27da23d5 647 dVAR; dSP;
30901a8a
FC		 648 GV * const gv =
649 MAXARG == 0 || (!TOPs && !POPs) ? PL_defoutgv : MUTABLE_GV(POPs);
1d603a67 650
2addaaf3
NC		 651 if (MAXARG == 0)
652 EXTEND(SP, 1);
653
a79db61d
AL		 654 if (gv) {
655 IO * const io = GvIO(gv);
656 if (io) {
a5e1d062 657 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 658 if (mg) {
d682515d 659 return tied_method0("CLOSE", SP, MUTABLE_SV(io), mg);
a79db61d
AL		 660 }
661 }
1d603a67 662 }
54310121 663 PUSHs(boolSV(do_close(gv, TRUE)));
a0d0e21e
LW		 664 RETURN;
665}
666
667PP(pp_pipe_op)
668{
a0d0e21e 669#ifdef HAS_PIPE
97aff369 670 dVAR;
9cad6237 671 dSP;
eb578fdb
KW		 672 IO *rstio;
673 IO *wstio;
a0d0e21e
LW		 674 int fd[2];
675
159b6efe
NC		 676 GV * const wgv = MUTABLE_GV(POPs);
677 GV * const rgv = MUTABLE_GV(POPs);
a0d0e21e
LW		 678
679 if (!rgv || !wgv)
680 goto badexit;
681
6e592b3a 682 if (!isGV_with_GP(rgv) || !isGV_with_GP(wgv))
cea2e8a9 683 DIE(aTHX_ PL_no_usym, "filehandle");
a0d0e21e
LW		 684 rstio = GvIOn(rgv);
685 wstio = GvIOn(wgv);
686
687 if (IoIFP(rstio))
688 do_close(rgv, FALSE);
689 if (IoIFP(wstio))
690 do_close(wgv, FALSE);
691
6ad3d225 692 if (PerlProc_pipe(fd) < 0)
a0d0e21e
LW		 693 goto badexit;
694
460c8493
IZ		 695 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
696 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
b5ac89c3 697 IoOFP(rstio) = IoIFP(rstio);
a0d0e21e 698 IoIFP(wstio) = IoOFP(wstio);
50952442
JH		 699 IoTYPE(rstio) = IoTYPE_RDONLY;
700 IoTYPE(wstio) = IoTYPE_WRONLY;
a0d0e21e
LW		 701
702 if (!IoIFP(rstio) || !IoOFP(wstio)) {
a79db61d
AL		 703 if (IoIFP(rstio))
704 PerlIO_close(IoIFP(rstio));
705 else
706 PerlLIO_close(fd[0]);
707 if (IoOFP(wstio))
708 PerlIO_close(IoOFP(wstio));
709 else
710 PerlLIO_close(fd[1]);
a0d0e21e
LW		 711 goto badexit;
712 }
4771b018
GS		 713#if defined(HAS_FCNTL) && defined(F_SETFD)
714 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
715 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
716#endif
a0d0e21e
LW		 717 RETPUSHYES;
718
719badexit:
720 RETPUSHUNDEF;
721#else
cea2e8a9 722 DIE(aTHX_ PL_no_func, "pipe");
a0d0e21e
LW		 723#endif
724}
725
726PP(pp_fileno)
727{
27da23d5 728 dVAR; dSP; dTARGET;
a0d0e21e
LW		 729 GV *gv;
730 IO *io;
760ac839 731 PerlIO *fp;
a5e1d062 732 const MAGIC *mg;
4592e6ca 733
a0d0e21e
LW		 734 if (MAXARG < 1)
735 RETPUSHUNDEF;
159b6efe 736 gv = MUTABLE_GV(POPs);
9c9f25b8 737 io = GvIO(gv);
4592e6ca 738
9c9f25b8 739 if (io
ad64d0ec 740 && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar)))
5b468f54 741 {
d682515d 742 return tied_method0("FILENO", SP, MUTABLE_SV(io), mg);
4592e6ca
NIS		 743 }
744
9c9f25b8 745 if (!io || !(fp = IoIFP(io))) {
c289d2f7
JH		 746 /* Can't do this because people seem to do things like
747 defined(fileno($foo)) to check whether $foo is a valid fh.
51087808
NC		 748
749 report_evil_fh(gv);
c289d2f7 750 */
a0d0e21e 751 RETPUSHUNDEF;
c289d2f7
JH		 752 }
753
760ac839 754 PUSHi(PerlIO_fileno(fp));
a0d0e21e
LW		 755 RETURN;
756}
757
758PP(pp_umask)
759{
97aff369 760 dVAR;
27da23d5 761 dSP;
d7e492a4 762#ifdef HAS_UMASK
27da23d5 763 dTARGET;
761237fe 764 Mode_t anum;
a0d0e21e 765
58536d15 766 if (MAXARG < 1 || (!TOPs && !POPs)) {
b0b546b3
GA		 767 anum = PerlLIO_umask(022);
768 /* setting it to 022 between the two calls to umask avoids
769 * to have a window where the umask is set to 0 -- meaning
770 * that another thread could create world-writeable files. */
771 if (anum != 022)
772 (void)PerlLIO_umask(anum);
a0d0e21e
LW		 773 }
774 else
6ad3d225 775 anum = PerlLIO_umask(POPi);
a0d0e21e
LW		 776 TAINT_PROPER("umask");
777 XPUSHi(anum);
778#else
a0288114 779 /* Only DIE if trying to restrict permissions on "user" (self).
eec2d3df
GS		 780 * Otherwise it's harmless and more useful to just return undef
781 * since 'group' and 'other' concepts probably don't exist here. */
58536d15 782 if (MAXARG >= 1 && (TOPs||POPs) && (POPi & 0700))
cea2e8a9 783 DIE(aTHX_ "umask not implemented");
6b88bc9c 784 XPUSHs(&PL_sv_undef);
a0d0e21e
LW		 785#endif
786 RETURN;
787}
788
789PP(pp_binmode)
790{
27da23d5 791 dVAR; dSP;
a0d0e21e
LW		 792 GV *gv;
793 IO *io;
760ac839 794 PerlIO *fp;
a0714e2c 795 SV *discp = NULL;
a0d0e21e
LW		 796
797 if (MAXARG < 1)
798 RETPUSHUNDEF;
60382766 799 if (MAXARG > 1) {
16fe6d59 800 discp = POPs;
60382766 801 }
a0d0e21e 802
159b6efe 803 gv = MUTABLE_GV(POPs);
9c9f25b8 804 io = GvIO(gv);
4592e6ca 805
9c9f25b8 806 if (io) {
a5e1d062 807 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 808 if (mg) {
bc0c81ca
NC		 809 /* This takes advantage of the implementation of the varargs
810 function, which I don't think that the optimiser will be able to
811 figure out. Although, as it's a static function, in theory it
812 could. */
d682515d
NC		 813 return Perl_tied_method(aTHX_ "BINMODE", SP, MUTABLE_SV(io), mg,
814 G_SCALAR|TIED_METHOD_MORTALIZE_NOT_NEEDED,
815 discp ? 1 : 0, discp);
a79db61d 816 }
4592e6ca 817 }
a0d0e21e 818
9c9f25b8 819 if (!io || !(fp = IoIFP(io))) {
51087808 820 report_evil_fh(gv);
b5fe5ca2 821 SETERRNO(EBADF,RMS_IFI);
50f846a7
SC		 822 RETPUSHUNDEF;
823 }
a0d0e21e 824
40d98b49 825 PUTBACK;
f0a78170 826 {
a79b25b7
VP		 827 STRLEN len = 0;
828 const char *d = NULL;
829 int mode;
830 if (discp)
831 d = SvPV_const(discp, len);
832 mode = mode_from_discipline(d, len);
f0a78170
NC		 833 if (PerlIO_binmode(aTHX_ fp, IoTYPE(io), mode, d)) {
834 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
835 if (!PerlIO_binmode(aTHX_ IoOFP(io), IoTYPE(io), mode, d)) {
836 SPAGAIN;
837 RETPUSHUNDEF;
838 }
839 }
840 SPAGAIN;
841 RETPUSHYES;
842 }
843 else {
844 SPAGAIN;
845 RETPUSHUNDEF;
38af81ff 846 }
40d98b49 847 }
a0d0e21e
LW		 848}
849
850PP(pp_tie)
851{
27da23d5 852 dVAR; dSP; dMARK;
a0d0e21e 853 HV* stash;
07822e36 854 GV *gv = NULL;
a0d0e21e 855 SV *sv;
1df70142 856 const I32 markoff = MARK - PL_stack_base;
e1ec3a88 857 const char *methname;
14befaf4 858 int how = PERL_MAGIC_tied;
e336de0d 859 U32 items;
c4420975 860 SV *varsv = *++MARK;
a0d0e21e 861
6b05c17a
NIS		 862 switch(SvTYPE(varsv)) {
863 case SVt_PVHV:
864 methname = "TIEHASH";
85fbaab2 865 HvEITER_set(MUTABLE_HV(varsv), 0);
6b05c17a
NIS		 866 break;
867 case SVt_PVAV:
868 methname = "TIEARRAY";
ce65bc73
FC		 869 if (!AvREAL(varsv)) {
870 if (!AvREIFY(varsv))
871 Perl_croak(aTHX_ "Cannot tie unreifiable array");
872 av_clear((AV *)varsv);
873 AvREIFY_off(varsv);
874 AvREAL_on(varsv);
875 }
6b05c17a
NIS		 876 break;
877 case SVt_PVGV:
13be902c 878 case SVt_PVLV:
8bb5f786 879 if (isGV_with_GP(varsv) && !SvFAKE(varsv)) {
6e592b3a
BM		 880 methname = "TIEHANDLE";
881 how = PERL_MAGIC_tiedscalar;
882 /* For tied filehandles, we apply tiedscalar magic to the IO
883 slot of the GP rather than the GV itself. AMS 20010812 */
884 if (!GvIOp(varsv))
885 GvIOp(varsv) = newIO();
ad64d0ec 886 varsv = MUTABLE_SV(GvIOp(varsv));
6e592b3a
BM		 887 break;
888 }
889 /* FALL THROUGH */
6b05c17a
NIS		 890 default:
891 methname = "TIESCALAR";
14befaf4 892 how = PERL_MAGIC_tiedscalar;
6b05c17a
NIS		 893 break;
894 }
e336de0d 895 items = SP - MARK++;
a91d1d42 896 if (sv_isobject(*MARK)) { /* Calls GET magic. */
d343c3ef 897 ENTER_with_name("call_TIE");
e788e7d3 898 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 899 PUSHMARK(SP);
eb160463 900 EXTEND(SP,(I32)items);
e336de0d
GS		 901 while (items--)
902 PUSHs(*MARK++);
903 PUTBACK;
864dbfa3 904 call_method(methname, G_SCALAR);
301e8125 905 }
6b05c17a 906 else {
086d2913
NC		 907 /* Can't use call_method here, else this: fileno FOO; tie @a, "FOO"
908 * will attempt to invoke IO::File::TIEARRAY, with (best case) the
909 * wrong error message, and worse case, supreme action at a distance.
910 * (Sorry obfuscation writers. You're not going to be given this one.)
6b05c17a 911 */
4886938f
BF		 912 stash = gv_stashsv(*MARK, 0);
913 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
35c1215d 914 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
a91d1d42 915 methname, SVfARG(SvOK(*MARK) ? *MARK : &PL_sv_no));
6b05c17a 916 }
d343c3ef 917 ENTER_with_name("call_TIE");
e788e7d3 918 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 919 PUSHMARK(SP);
eb160463 920 EXTEND(SP,(I32)items);
e336de0d
GS		 921 while (items--)
922 PUSHs(*MARK++);
923 PUTBACK;
ad64d0ec 924 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
6b05c17a 925 }
a0d0e21e
LW		 926 SPAGAIN;
927
928 sv = TOPs;
d3acc0f7 929 POPSTACK;
a0d0e21e 930 if (sv_isobject(sv)) {
33c27489 931 sv_unmagic(varsv, how);
ae21d580 932 /* Croak if a self-tie on an aggregate is attempted. */
b881518d 933 if (varsv == SvRV(sv) &&
d87ebaca
YST		 934 (SvTYPE(varsv) == SVt_PVAV ||
935 SvTYPE(varsv) == SVt_PVHV))
ae21d580
JH		 936 Perl_croak(aTHX_
937 "Self-ties of arrays and hashes are not supported");
a0714e2c 938 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
a0d0e21e 939 }
d343c3ef 940 LEAVE_with_name("call_TIE");
3280af22 941 SP = PL_stack_base + markoff;
a0d0e21e
LW		 942 PUSHs(sv);
943 RETURN;
944}
945
946PP(pp_untie)
947{
27da23d5 948 dVAR; dSP;
5b468f54 949 MAGIC *mg;
33c27489 950 SV *sv = POPs;
1df70142 951 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 952 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
55497cff 953
ca0d4ed9 954 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
5b468f54
AMS		 955 RETPUSHYES;
956
65eba18f 957 if ((mg = SvTIED_mg(sv, how))) {
1b6737cc 958 SV * const obj = SvRV(SvTIED_obj(sv, mg));
fa2b88e0 959 if (obj) {
c4420975 960 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
0bd48802 961 CV *cv;
c4420975 962 if (gv && isGV(gv) && (cv = GvCV(gv))) {
fa2b88e0 963 PUSHMARK(SP);
c33ef3ac 964 PUSHs(SvTIED_obj(MUTABLE_SV(gv), mg));
6e449a3a 965 mXPUSHi(SvREFCNT(obj) - 1);
fa2b88e0 966 PUTBACK;
d343c3ef 967 ENTER_with_name("call_UNTIE");
ad64d0ec 968 call_sv(MUTABLE_SV(cv), G_VOID);
d343c3ef 969 LEAVE_with_name("call_UNTIE");
fa2b88e0
JS		 970 SPAGAIN;
971 }
a2a5de95
NC		 972 else if (mg && SvREFCNT(obj) > 1) {
973 Perl_ck_warner(aTHX_ packWARN(WARN_UNTIE),
974 "untie attempted while %"UVuf" inner references still exist",
975 (UV)SvREFCNT(obj) - 1 ) ;
c4420975 976 }
cbdc8872 977 }
978 }
38193a09 979 sv_unmagic(sv, how) ;
55497cff 980 RETPUSHYES;
a0d0e21e
LW		 981}
982
c07a80fd 983PP(pp_tied)
984{
97aff369 985 dVAR;
39644a26 986 dSP;
1b6737cc 987 const MAGIC *mg;
33c27489 988 SV *sv = POPs;
1df70142 989 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 990 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
5b468f54 991
4be76e1f 992 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
5b468f54 993 RETPUSHUNDEF;
c07a80fd 994
155aba94 995 if ((mg = SvTIED_mg(sv, how))) {
dc456155 996 PUSHs(SvTIED_obj(sv, mg));
33c27489 997 RETURN;
c07a80fd 998 }
c07a80fd 999 RETPUSHUNDEF;
1000}
1001
a0d0e21e
LW		 1002PP(pp_dbmopen)
1003{
27da23d5 1004 dVAR; dSP;
a0d0e21e
LW		 1005 dPOPPOPssrl;
1006 HV* stash;
07822e36 1007 GV *gv = NULL;
a0d0e21e 1008
85fbaab2 1009 HV * const hv = MUTABLE_HV(POPs);
84bafc02 1010 SV * const sv = newSVpvs_flags("AnyDBM_File", SVs_TEMP);
da51bb9b 1011 stash = gv_stashsv(sv, 0);
8ebc5c01 1012 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
a0d0e21e 1013 PUTBACK;
864dbfa3 1014 require_pv("AnyDBM_File.pm");
a0d0e21e 1015 SPAGAIN;
eff494dd 1016 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH")))
cea2e8a9 1017 DIE(aTHX_ "No dbm on this machine");
a0d0e21e
LW		 1018 }
1019
57d3b86d 1020 ENTER;
924508f0 1021 PUSHMARK(SP);
6b05c17a 1022
924508f0 1023 EXTEND(SP, 5);
a0d0e21e
LW		 1024 PUSHs(sv);
1025 PUSHs(left);
1026 if (SvIV(right))
6e449a3a 1027 mPUSHu(O_RDWR|O_CREAT);
a0d0e21e 1028 else
480e0d3c 1029 {
6e449a3a 1030 mPUSHu(O_RDWR);
480e0d3c
FC		 1031 if (!SvOK(right)) right = &PL_sv_no;
1032 }
a0d0e21e 1033 PUSHs(right);
57d3b86d 1034 PUTBACK;
ad64d0ec 1035 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
a0d0e21e
LW		 1036 SPAGAIN;
1037
1038 if (!sv_isobject(TOPs)) {
924508f0
GS		 1039 SP--;
1040 PUSHMARK(SP);
a0d0e21e
LW		 1041 PUSHs(sv);
1042 PUSHs(left);
6e449a3a 1043 mPUSHu(O_RDONLY);
a0d0e21e 1044 PUSHs(right);
a0d0e21e 1045 PUTBACK;
ad64d0ec 1046 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
a0d0e21e
LW		 1047 SPAGAIN;
1048 }
1049
6b05c17a 1050 if (sv_isobject(TOPs)) {
ad64d0ec
NC		 1051 sv_unmagic(MUTABLE_SV(hv), PERL_MAGIC_tied);
1052 sv_magic(MUTABLE_SV(hv), TOPs, PERL_MAGIC_tied, NULL, 0);
6b05c17a 1053 }
a0d0e21e
LW		 1054 LEAVE;
1055 RETURN;
1056}
1057
a0d0e21e
LW		 1058PP(pp_sselect)
1059{
a0d0e21e 1060#ifdef HAS_SELECT
97aff369 1061 dVAR; dSP; dTARGET;
eb578fdb
KW		 1062 I32 i;
1063 I32 j;
1064 char *s;
1065 SV *sv;
65202027 1066 NV value;
a0d0e21e
LW		 1067 I32 maxlen = 0;
1068 I32 nfound;
1069 struct timeval timebuf;
1070 struct timeval *tbuf = &timebuf;
1071 I32 growsize;
1072 char *fd_sets[4];
1073#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1074 I32 masksize;
1075 I32 offset;
1076 I32 k;
1077
1078# if BYTEORDER & 0xf0000
1079# define ORDERBYTE (0x88888888 - BYTEORDER)
1080# else
1081# define ORDERBYTE (0x4444 - BYTEORDER)
1082# endif
1083
1084#endif
1085
1086 SP -= 4;
1087 for (i = 1; i <= 3; i++) {
c4420975 1088 SV * const sv = SP[i];
9d6d5a79 1089 SvGETMAGIC(sv);
15547071
GA		 1090 if (!SvOK(sv))
1091 continue;
1092 if (SvREADONLY(sv)) {
729c079f
NC		 1093 if (SvIsCOW(sv))
1094 sv_force_normal_flags(sv, 0);
15547071 1095 if (SvREADONLY(sv) && !(SvPOK(sv) && SvCUR(sv) == 0))
6ad8f254 1096 Perl_croak_no_modify(aTHX);
729c079f 1097 }
4ef2275c 1098 if (!SvPOK(sv)) {
9d6d5a79
FC		 1099 if (!SvPOKp(sv))
1100 Perl_ck_warner(aTHX_ packWARN(WARN_MISC),
1101 "Non-string passed as bitmask");
1102 SvPV_force_nomg_nolen(sv); /* force string conversion */
4ef2275c 1103 }
729c079f 1104 j = SvCUR(sv);
a0d0e21e
LW		 1105 if (maxlen < j)
1106 maxlen = j;
1107 }
1108
5ff3f7a4 1109/* little endians can use vecs directly */
e366b469 1110#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
5ff3f7a4 1111# ifdef NFDBITS
a0d0e21e 1112
5ff3f7a4
GS		 1113# ifndef NBBY
1114# define NBBY 8
1115# endif
a0d0e21e
LW		 1116
1117 masksize = NFDBITS / NBBY;
5ff3f7a4 1118# else
a0d0e21e 1119 masksize = sizeof(long); /* documented int, everyone seems to use long */
5ff3f7a4 1120# endif
a0d0e21e
LW		 1121 Zero(&fd_sets[0], 4, char*);
1122#endif
1123
ad517f75
MHM		 1124# if SELECT_MIN_BITS == 1
1125 growsize = sizeof(fd_set);
1126# else
1127# if defined(__GLIBC__) && defined(__FD_SETSIZE)
1128# undef SELECT_MIN_BITS
1129# define SELECT_MIN_BITS __FD_SETSIZE
1130# endif
e366b469
PG		 1131 /* If SELECT_MIN_BITS is greater than one we most probably will want
1132 * to align the sizes with SELECT_MIN_BITS/8 because for example
1133 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
1134 * UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
1135 * on (sets/tests/clears bits) is 32 bits. */
1136 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
e366b469
PG		 1137# endif
1138
a0d0e21e
LW		 1139 sv = SP[4];
1140 if (SvOK(sv)) {
1141 value = SvNV(sv);
1142 if (value < 0.0)
1143 value = 0.0;
1144 timebuf.tv_sec = (long)value;
65202027 1145 value -= (NV)timebuf.tv_sec;
a0d0e21e
LW		 1146 timebuf.tv_usec = (long)(value * 1000000.0);
1147 }
1148 else
4608196e 1149 tbuf = NULL;
a0d0e21e
LW		 1150
1151 for (i = 1; i <= 3; i++) {
1152 sv = SP[i];
15547071 1153 if (!SvOK(sv) || SvCUR(sv) == 0) {
a0d0e21e
LW		 1154 fd_sets[i] = 0;
1155 continue;
1156 }
4ef2275c 1157 assert(SvPOK(sv));
a0d0e21e
LW		 1158 j = SvLEN(sv);
1159 if (j < growsize) {
1160 Sv_Grow(sv, growsize);
a0d0e21e 1161 }
c07a80fd 1162 j = SvCUR(sv);
1163 s = SvPVX(sv) + j;
1164 while (++j <= growsize) {
1165 *s++ = '\0';
1166 }
1167
a0d0e21e
LW		 1168#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1169 s = SvPVX(sv);
a02a5408 1170 Newx(fd_sets[i], growsize, char);
a0d0e21e
LW		 1171 for (offset = 0; offset < growsize; offset += masksize) {
1172 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1173 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1174 }
1175#else
1176 fd_sets[i] = SvPVX(sv);
1177#endif
1178 }
1179
dc4c69d9
JH		 1180#ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1181 /* Can't make just the (void*) conditional because that would be
1182 * cpp #if within cpp macro, and not all compilers like that. */
1183 nfound = PerlSock_select(
1184 maxlen * 8,
1185 (Select_fd_set_t) fd_sets[1],
1186 (Select_fd_set_t) fd_sets[2],
1187 (Select_fd_set_t) fd_sets[3],
1188 (void*) tbuf); /* Workaround for compiler bug. */
1189#else
6ad3d225 1190 nfound = PerlSock_select(
a0d0e21e
LW		 1191 maxlen * 8,
1192 (Select_fd_set_t) fd_sets[1],
1193 (Select_fd_set_t) fd_sets[2],
1194 (Select_fd_set_t) fd_sets[3],
1195 tbuf);
dc4c69d9 1196#endif
a0d0e21e
LW		 1197 for (i = 1; i <= 3; i++) {
1198 if (fd_sets[i]) {
1199 sv = SP[i];
1200#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1201 s = SvPVX(sv);
1202 for (offset = 0; offset < growsize; offset += masksize) {
1203 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1204 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1205 }
1206 Safefree(fd_sets[i]);
1207#endif
1208 SvSETMAGIC(sv);
1209 }
1210 }
1211
4189264e 1212 PUSHi(nfound);
a0d0e21e 1213 if (GIMME == G_ARRAY && tbuf) {
65202027
DS		 1214 value = (NV)(timebuf.tv_sec) +
1215 (NV)(timebuf.tv_usec) / 1000000.0;
6e449a3a 1216 mPUSHn(value);
a0d0e21e
LW		 1217 }
1218 RETURN;
1219#else
cea2e8a9 1220 DIE(aTHX_ "select not implemented");
a0d0e21e
LW		 1221#endif
1222}
1223
8226a3d7
NC		 1224/*
1225=for apidoc setdefout
1226
1227Sets PL_defoutgv, the default file handle for output, to the passed in
1228typeglob. As PL_defoutgv "owns" a reference on its typeglob, the reference
1229count of the passed in typeglob is increased by one, and the reference count
1230of the typeglob that PL_defoutgv points to is decreased by one.
1231
1232=cut
1233*/
1234
4633a7c4 1235void
864dbfa3 1236Perl_setdefout(pTHX_ GV *gv)
4633a7c4 1237{
97aff369 1238 dVAR;
9a9bb270
FC		 1239 PERL_ARGS_ASSERT_SETDEFOUT;
1240 SvREFCNT_inc_simple_void_NN(gv);
ef8d46e8 1241 SvREFCNT_dec(PL_defoutgv);
3280af22 1242 PL_defoutgv = gv;
4633a7c4
LW		 1243}
1244
a0d0e21e
LW		 1245PP(pp_select)
1246{
97aff369 1247 dVAR; dSP; dTARGET;
4633a7c4 1248 HV *hv;
159b6efe 1249 GV * const newdefout = (PL_op->op_private > 0) ? (MUTABLE_GV(POPs)) : NULL;
099be4f1 1250 GV * egv = GvEGVx(PL_defoutgv);
0df2568b 1251 GV * const *gvp;
4633a7c4 1252
4633a7c4 1253 if (!egv)
3280af22 1254 egv = PL_defoutgv;
099be4f1 1255 hv = isGV_with_GP(egv) ? GvSTASH(egv) : NULL;
0df2568b 1256 gvp = hv && HvENAME(hv)
204263bc
FC		 1257 ? (GV**)hv_fetch(hv, GvNAME(egv), HEK_UTF8(GvNAME_HEK(egv)) ? -GvNAMELEN(egv) : GvNAMELEN(egv), FALSE)
1258 : NULL;
0df2568b 1259 if (gvp && *gvp == egv) {
bd61b366 1260 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
f86702cc 1261 XPUSHTARG;
0df2568b
FC		 1262 }
1263 else {
ad64d0ec 1264 mXPUSHs(newRV(MUTABLE_SV(egv)));
4633a7c4
LW		 1265 }
1266
1267 if (newdefout) {
ded8aa31
GS		 1268 if (!GvIO(newdefout))
1269 gv_IOadd(newdefout);
4633a7c4
LW		 1270 setdefout(newdefout);
1271 }
1272
a0d0e21e
LW		 1273 RETURN;
1274}
1275
1276PP(pp_getc)
1277{
27da23d5 1278 dVAR; dSP; dTARGET;
30901a8a
FC		 1279 GV * const gv =
1280 MAXARG==0 || (!TOPs && !POPs) ? PL_stdingv : MUTABLE_GV(POPs);
9c9f25b8 1281 IO *const io = GvIO(gv);
2ae324a7 1282
ac3697cd
NC		 1283 if (MAXARG == 0)
1284 EXTEND(SP, 1);
1285
9c9f25b8 1286 if (io) {
a5e1d062 1287 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1288 if (mg) {
0240605e 1289 const U32 gimme = GIMME_V;
d682515d 1290 Perl_tied_method(aTHX_ "GETC", SP, MUTABLE_SV(io), mg, gimme, 0);
0240605e
NC		 1291 if (gimme == G_SCALAR) {
1292 SPAGAIN;
a79db61d 1293 SvSetMagicSV_nosteal(TARG, TOPs);
0240605e
NC		 1294 }
1295 return NORMAL;
a79db61d 1296 }
2ae324a7 1297 }
90133b69 1298 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
51087808 1299 if (!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
831e4cc3 1300 report_evil_fh(gv);
b5fe5ca2 1301 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1302 RETPUSHUNDEF;
90133b69 1303 }
bbce6d69 1304 TAINT;
76f68e9b 1305 sv_setpvs(TARG, " ");
9bc64814 1306 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
7d59b7e4
NIS		 1307 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1308 /* Find out how many bytes the char needs */
aa07b2f6 1309 Size_t len = UTF8SKIP(SvPVX_const(TARG));
7d59b7e4
NIS		 1310 if (len > 1) {
1311 SvGROW(TARG,len+1);
1312 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1313 SvCUR_set(TARG,1+len);
1314 }
1315 SvUTF8_on(TARG);
1316 }
a0d0e21e
LW		 1317 PUSHTARG;
1318 RETURN;
1319}
1320
76e3520e 1321STATIC OP *
cea2e8a9 1322S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
a0d0e21e 1323{
27da23d5 1324 dVAR;
eb578fdb 1325 PERL_CONTEXT *cx;
f54cb97a 1326 const I32 gimme = GIMME_V;
a0d0e21e 1327
7918f24d
NC		 1328 PERL_ARGS_ASSERT_DOFORM;
1329
7b190374
NC		 1330 if (cv && CvCLONE(cv))
1331 cv = MUTABLE_CV(sv_2mortal(MUTABLE_SV(cv_clone(cv))));
1332
a0d0e21e
LW		 1333 ENTER;
1334 SAVETMPS;
1335
146174a9 1336 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
10067d9a 1337 PUSHFORMAT(cx, retop);
f32c7e86
FC		 1338 if (CvDEPTH(cv) >= 2) {
1339 PERL_STACK_OVERFLOW_CHECK();
1340 pad_push(CvPADLIST(cv), CvDEPTH(cv));
1341 }
fd617465 1342 SAVECOMPPAD();
f32c7e86 1343 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), CvDEPTH(cv));
a0d0e21e 1344
4633a7c4 1345 setdefout(gv); /* locally select filehandle so $% et al work */
a0d0e21e
LW		 1346 return CvSTART(cv);
1347}
1348
1349PP(pp_enterwrite)
1350{
97aff369 1351 dVAR;
39644a26 1352 dSP;
eb578fdb
KW		 1353 GV *gv;
1354 IO *io;
a0d0e21e 1355 GV *fgv;
07822e36
JH		 1356 CV *cv = NULL;
1357 SV *tmpsv = NULL;
a0d0e21e 1358
2addaaf3 1359 if (MAXARG == 0) {
3280af22 1360 gv = PL_defoutgv;
2addaaf3
NC		 1361 EXTEND(SP, 1);
1362 }
a0d0e21e 1363 else {
159b6efe 1364 gv = MUTABLE_GV(POPs);
a0d0e21e 1365 if (!gv)
3280af22 1366 gv = PL_defoutgv;
a0d0e21e 1367 }
a0d0e21e
LW		 1368 io = GvIO(gv);
1369 if (!io) {
1370 RETPUSHNO;
1371 }
1372 if (IoFMT_GV(io))
1373 fgv = IoFMT_GV(io);
1374 else
1375 fgv = gv;
1376
2d1ebc9b 1377 assert(fgv);
a79db61d 1378
a0d0e21e 1379 cv = GvFORM(fgv);
a0d0e21e 1380 if (!cv) {
10edeb5d 1381 tmpsv = sv_newmortal();
f4a7049d 1382 gv_efullname4(tmpsv, fgv, NULL, FALSE);
2d1ebc9b 1383 DIE(aTHX_ "Undefined format \"%"SVf"\" called", SVfARG(tmpsv));
a0d0e21e 1384 }
44a8e56a 1385 IoFLAGS(io) &= ~IOf_DIDTOP;
8e4ecf23 1386 RETURNOP(doform(cv,gv,PL_op->op_next));
a0d0e21e
LW		 1387}
1388
1389PP(pp_leavewrite)
1390{
27da23d5 1391 dVAR; dSP;
f9c764c5 1392 GV * const gv = cxstack[cxstack_ix].blk_format.gv;
eb578fdb 1393 IO * const io = GvIOp(gv);
8b8cacda 1394 PerlIO *ofp;
760ac839 1395 PerlIO *fp;
8772537c
AL		 1396 SV **newsp;
1397 I32 gimme;
eb578fdb 1398 PERL_CONTEXT *cx;
8f89e5a9 1399 OP *retop;
a0d0e21e 1400
8b8cacda
B		 1401 if (!io || !(ofp = IoOFP(io)))
1402 goto forget_top;
1403
760ac839 1404 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1405 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
8b8cacda 1406
3280af22
NIS		 1407 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1408 PL_formtarget != PL_toptarget)
a0d0e21e 1409 {
4633a7c4
LW		 1410 GV *fgv;
1411 CV *cv;
a0d0e21e
LW		 1412 if (!IoTOP_GV(io)) {
1413 GV *topgv;
a0d0e21e
LW		 1414
1415 if (!IoTOP_NAME(io)) {
1b6737cc 1416 SV *topname;
a0d0e21e
LW		 1417 if (!IoFMT_NAME(io))
1418 IoFMT_NAME(io) = savepv(GvNAME(gv));
d0c0e7dd
FC		 1419 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%"HEKf"_TOP",
1420 HEKfARG(GvNAME_HEK(gv))));
f776e3cd 1421 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
748a9306 1422 if ((topgv && GvFORM(topgv)) ||
fafc274c 1423 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
2e0de35c 1424 IoTOP_NAME(io) = savesvpv(topname);
a0d0e21e 1425 else
89529cee 1426 IoTOP_NAME(io) = savepvs("top");
a0d0e21e 1427 }
f776e3cd 1428 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
a0d0e21e 1429 if (!topgv || !GvFORM(topgv)) {
b929a54b 1430 IoLINES_LEFT(io) = IoPAGE_LEN(io);
a0d0e21e
LW		 1431 goto forget_top;
1432 }
1433 IoTOP_GV(io) = topgv;
1434 }
748a9306
LW		 1435 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1436 I32 lines = IoLINES_LEFT(io);
504618e9 1437 const char *s = SvPVX_const(PL_formtarget);
8e07c86e
AD		 1438 if (lines <= 0) /* Yow, header didn't even fit!!! */
1439 goto forget_top;
748a9306
LW		 1440 while (lines-- > 0) {
1441 s = strchr(s, '\n');
1442 if (!s)
1443 break;
1444 s++;
1445 }
1446 if (s) {
f54cb97a 1447 const STRLEN save = SvCUR(PL_formtarget);
aa07b2f6 1448 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
d75029d0
NIS		 1449 do_print(PL_formtarget, ofp);
1450 SvCUR_set(PL_formtarget, save);
3280af22
NIS		 1451 sv_chop(PL_formtarget, s);
1452 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW		 1453 }
1454 }
a0d0e21e 1455 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
f6dfc736 1456 do_print(GvSV(gv_fetchpvs("\f", GV_ADD, SVt_PV)), ofp);
a0d0e21e
LW		 1457 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1458 IoPAGE(io)++;
3280af22 1459 PL_formtarget = PL_toptarget;
748a9306 1460 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4
LW		 1461 fgv = IoTOP_GV(io);
1462 if (!fgv)
cea2e8a9 1463 DIE(aTHX_ "bad top format reference");
4633a7c4 1464 cv = GvFORM(fgv);
1df70142
AL		 1465 if (!cv) {
1466 SV * const sv = sv_newmortal();
bd61b366 1467 gv_efullname4(sv, fgv, NULL, FALSE);
44b7e78a 1468 DIE(aTHX_ "Undefined top format \"%"SVf"\" called", SVfARG(sv));
4633a7c4 1469 }
43cd5cb7 1470 return doform(cv, gv, PL_op);
a0d0e21e
LW		 1471 }
1472
1473 forget_top:
3280af22 1474 POPBLOCK(cx,PL_curpm);
a0d0e21e 1475 POPFORMAT(cx);
8f89e5a9 1476 retop = cx->blk_sub.retop;
43cd5cb7 1477 SP = newsp; /* ignore retval of formline */
a0d0e21e
LW		 1478 LEAVE;
1479
c782dc1d
FC		 1480 if (!io || !(fp = IoOFP(io))) {
1481 if (io && IoIFP(io))
7716c5c5 1482 report_wrongway_fh(gv, '<');
c521cf7c 1483 else
7716c5c5 1484 report_evil_fh(gv);
3280af22 1485 PUSHs(&PL_sv_no);
a0d0e21e
LW		 1486 }
1487 else {
3280af22 1488 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
a2a5de95 1489 Perl_ck_warner(aTHX_ packWARN(WARN_IO), "page overflow");
a0d0e21e 1490 }
d75029d0 1491 if (!do_print(PL_formtarget, fp))
3280af22 1492 PUSHs(&PL_sv_no);
a0d0e21e 1493 else {
3280af22
NIS		 1494 FmLINES(PL_formtarget) = 0;
1495 SvCUR_set(PL_formtarget, 0);
1496 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1497 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1498 (void)PerlIO_flush(fp);
3280af22 1499 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1500 }
1501 }
3280af22 1502 PL_formtarget = PL_bodytarget;
29033a8a 1503 PERL_UNUSED_VAR(gimme);
8e4ecf23 1504 RETURNOP(retop);
a0d0e21e
LW		 1505}
1506
1507PP(pp_prtf)
1508{
27da23d5 1509 dVAR; dSP; dMARK; dORIGMARK;
760ac839 1510 PerlIO *fp;
26db47c4 1511 SV *sv;
a0d0e21e 1512
159b6efe
NC		 1513 GV * const gv
1514 = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv;
9c9f25b8 1515 IO *const io = GvIO(gv);
46fc3d4c 1516
9c9f25b8 1517 if (io) {
a5e1d062 1518 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d
AL		 1519 if (mg) {
1520 if (MARK == ORIGMARK) {
1521 MEXTEND(SP, 1);
1522 ++MARK;
1523 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1524 ++SP;
1525 }
d682515d
NC		 1526 return Perl_tied_method(aTHX_ "PRINTF", mark - 1, MUTABLE_SV(io),
1527 mg,
1528 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1529 sp - mark);
a79db61d 1530 }
46fc3d4c 1531 }
1532
561b68a9 1533 sv = newSV(0);
9c9f25b8 1534 if (!io) {
51087808 1535 report_evil_fh(gv);
93189314 1536 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW		 1537 goto just_say_no;
1538 }
1539 else if (!(fp = IoOFP(io))) {
7716c5c5
NC		 1540 if (IoIFP(io))
1541 report_wrongway_fh(gv, '<');
1542 else if (ckWARN(WARN_CLOSED))
1543 report_evil_fh(gv);
93189314 1544 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
a0d0e21e
LW		 1545 goto just_say_no;
1546 }
1547 else {
1548 do_sprintf(sv, SP - MARK, MARK + 1);
1549 if (!do_print(sv, fp))
1550 goto just_say_no;
1551
1552 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1553 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW		 1554 goto just_say_no;
1555 }
1556 SvREFCNT_dec(sv);
1557 SP = ORIGMARK;
3280af22 1558 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1559 RETURN;
1560
1561 just_say_no:
1562 SvREFCNT_dec(sv);
1563 SP = ORIGMARK;
3280af22 1564 PUSHs(&PL_sv_undef);
a0d0e21e
LW		 1565 RETURN;
1566}
1567
c07a80fd 1568PP(pp_sysopen)
1569{
97aff369 1570 dVAR;
39644a26 1571 dSP;
de5e49e1 1572 const int perm = (MAXARG > 3 && (TOPs || POPs)) ? POPi : 0666;
1df70142 1573 const int mode = POPi;
1b6737cc 1574 SV * const sv = POPs;
159b6efe 1575 GV * const gv = MUTABLE_GV(POPs);
1b6737cc 1576 STRLEN len;
c07a80fd 1577
4592e6ca 1578 /* Need TIEHANDLE method ? */
1b6737cc 1579 const char * const tmps = SvPV_const(sv, len);
e62f0680 1580 /* FIXME? do_open should do const */
4608196e 1581 if (do_open(gv, tmps, len, TRUE, mode, perm, NULL)) {
c07a80fd 1582 IoLINES(GvIOp(gv)) = 0;
3280af22 1583 PUSHs(&PL_sv_yes);
c07a80fd 1584 }
1585 else {
3280af22 1586 PUSHs(&PL_sv_undef);
c07a80fd 1587 }
1588 RETURN;
1589}
1590
a0d0e21e
LW		 1591PP(pp_sysread)
1592{
27da23d5 1593 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
0b423688 1594 SSize_t offset;
a0d0e21e
LW		 1595 IO *io;
1596 char *buffer;
0b423688 1597 STRLEN orig_size;
5b54f415 1598 SSize_t length;
eb5c063a 1599 SSize_t count;
748a9306 1600 SV *bufsv;
a0d0e21e 1601 STRLEN blen;
eb5c063a 1602 int fp_utf8;
1dd30107
NC		 1603 int buffer_utf8;
1604 SV *read_target;
eb5c063a
NIS		 1605 Size_t got = 0;
1606 Size_t wanted;
1d636c13 1607 bool charstart = FALSE;
87330c3c
JH		 1608 STRLEN charskip = 0;
1609 STRLEN skip = 0;
a0d0e21e 1610
159b6efe 1611 GV * const gv = MUTABLE_GV(*++MARK);
5b468f54 1612 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1b6737cc 1613 && gv && (io = GvIO(gv)) )
137443ea 1614 {
a5e1d062 1615 const MAGIC *const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1b6737cc 1616 if (mg) {
d682515d
NC		 1617 return Perl_tied_method(aTHX_ "READ", mark - 1, MUTABLE_SV(io), mg,
1618 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1619 sp - mark);
1b6737cc 1620 }
2ae324a7 1621 }
1622
a0d0e21e
LW		 1623 if (!gv)
1624 goto say_undef;
748a9306 1625 bufsv = *++MARK;
ff68c719 1626 if (! SvOK(bufsv))
76f68e9b 1627 sv_setpvs(bufsv, "");
a0d0e21e 1628 length = SvIVx(*++MARK);
4bac9ae4
CS		 1629 if (length < 0)
1630 DIE(aTHX_ "Negative length");
748a9306 1631 SETERRNO(0,0);
a0d0e21e
LW		 1632 if (MARK < SP)
1633 offset = SvIVx(*++MARK);
1634 else
1635 offset = 0;
1636 io = GvIO(gv);
b5fe5ca2 1637 if (!io || !IoIFP(io)) {
51087808 1638 report_evil_fh(gv);
b5fe5ca2 1639 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1640 goto say_undef;
b5fe5ca2 1641 }
0064a8a9 1642 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
7d59b7e4 1643 buffer = SvPVutf8_force(bufsv, blen);
1e54db1a 1644 /* UTF-8 may not have been set if they are all low bytes */
eb5c063a 1645 SvUTF8_on(bufsv);
9b9d7ce8 1646 buffer_utf8 = 0;
7d59b7e4
NIS		 1647 }
1648 else {
1649 buffer = SvPV_force(bufsv, blen);
1dd30107 1650 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
7d59b7e4 1651 }
4bac9ae4
CS		 1652 if (DO_UTF8(bufsv)) {
1653 /* offset adjust in characters not bytes */
1654 /* SV's length cache is only safe for non-magical values */
1655 if (SvGMAGICAL(bufsv))
1656 blen = utf8_length((const U8 *)buffer, (const U8 *)buffer + blen);
1657 else
1658 blen = sv_len_utf8(bufsv);
1659 }
7d59b7e4 1660
d0965105
JH		 1661 charstart = TRUE;
1662 charskip = 0;
87330c3c 1663 skip = 0;
4bac9ae4 1664 wanted = length;
d0965105 1665
a0d0e21e 1666#ifdef HAS_SOCKET
533c011a 1667 if (PL_op->op_type == OP_RECV) {
0b423688 1668 Sock_size_t bufsize;
46fc3d4c 1669 char namebuf[MAXPATHLEN];
b5afd346 1670#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
490ab354
JH		 1671 bufsize = sizeof (struct sockaddr_in);
1672#else
46fc3d4c 1673 bufsize = sizeof namebuf;
490ab354 1674#endif
abf95952
IZ		 1675#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1676 if (bufsize >= 256)
1677 bufsize = 255;
1678#endif
eb160463 1679 buffer = SvGROW(bufsv, (STRLEN)(length+1));
bbce6d69 1680 /* 'offset' means 'flags' here */
eb5c063a 1681 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
10edeb5d 1682 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1683 if (count < 0)
a0d0e21e 1684 RETPUSHUNDEF;
8eb023a9
DM		 1685 /* MSG_TRUNC can give oversized count; quietly lose it */
1686 if (count > length)
1687 count = length;
4107cc59
OF		 1688#ifdef EPOC
1689 /* Bogus return without padding */
1690 bufsize = sizeof (struct sockaddr_in);
1691#endif
eb5c063a 1692 SvCUR_set(bufsv, count);
748a9306
LW		 1693 *SvEND(bufsv) = '\0';
1694 (void)SvPOK_only(bufsv);
eb5c063a
NIS		 1695 if (fp_utf8)
1696 SvUTF8_on(bufsv);
748a9306 1697 SvSETMAGIC(bufsv);
aac0dd9a 1698 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1699 if (!(IoFLAGS(io) & IOf_UNTAINT))
1700 SvTAINTED_on(bufsv);
a0d0e21e 1701 SP = ORIGMARK;
46fc3d4c 1702 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW		 1703 PUSHs(TARG);
1704 RETURN;
1705 }
a0d0e21e 1706#endif
bbce6d69 1707 if (offset < 0) {
0b423688 1708 if (-offset > (SSize_t)blen)
cea2e8a9 1709 DIE(aTHX_ "Offset outside string");
bbce6d69 1710 offset += blen;
1711 }
eb5c063a
NIS		 1712 if (DO_UTF8(bufsv)) {
1713 /* convert offset-as-chars to offset-as-bytes */
d5f981bb 1714 if (offset >= (SSize_t)blen)
6960c29a
CH		 1715 offset += SvCUR(bufsv) - blen;
1716 else
1717 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
eb5c063a
NIS		 1718 }
1719 more_bytes:
0b423688 1720 orig_size = SvCUR(bufsv);
1dd30107
NC		 1721 /* Allocating length + offset + 1 isn't perfect in the case of reading
1722 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1723 unduly.
1724 (should be 2 * length + offset + 1, or possibly something longer if
1725 PL_encoding is true) */
eb160463 1726 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
0b423688
TC		 1727 if (offset > 0 && offset > (SSize_t)orig_size) { /* Zero any newly allocated space */
1728 Zero(buffer+orig_size, offset-orig_size, char);
cd52b7b2 1729 }
eb5c063a 1730 buffer = buffer + offset;
1dd30107
NC		 1731 if (!buffer_utf8) {
1732 read_target = bufsv;
1733 } else {
1734 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1735 concatenate it to the current buffer. */
1736
1737 /* Truncate the existing buffer to the start of where we will be
1738 reading to: */
1739 SvCUR_set(bufsv, offset);
1740
1741 read_target = sv_newmortal();
862a34c6 1742 SvUPGRADE(read_target, SVt_PV);
fe2774ed 1743 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1dd30107 1744 }
eb5c063a 1745
533c011a 1746 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1747#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1748 if (IoTYPE(io) == IoTYPE_SOCKET) {
eb5c063a
NIS		 1749 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1750 buffer, length, 0);
a7092146
GS		 1751 }
1752 else
1753#endif
1754 {
eb5c063a
NIS		 1755 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1756 buffer, length);
a7092146 1757 }
a0d0e21e
LW		 1758 }
1759 else
1760#ifdef HAS_SOCKET__bad_code_maybe
50952442 1761 if (IoTYPE(io) == IoTYPE_SOCKET) {
0b423688 1762 Sock_size_t bufsize;
46fc3d4c 1763 char namebuf[MAXPATHLEN];
490ab354
JH		 1764#if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1765 bufsize = sizeof (struct sockaddr_in);
1766#else
46fc3d4c 1767 bufsize = sizeof namebuf;
490ab354 1768#endif
eb5c063a 1769 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
46fc3d4c 1770 (struct sockaddr *)namebuf, &bufsize);
a0d0e21e
LW		 1771 }
1772 else
1773#endif
3b02c43c 1774 {
eb5c063a
NIS		 1775 count = PerlIO_read(IoIFP(io), buffer, length);
1776 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1777 if (count == 0 && PerlIO_error(IoIFP(io)))
1778 count = -1;
3b02c43c 1779 }
eb5c063a 1780 if (count < 0) {
7716c5c5 1781 if (IoTYPE(io) == IoTYPE_WRONLY)
a5390457 1782 report_wrongway_fh(gv, '>');
a0d0e21e 1783 goto say_undef;
af8c498a 1784 }
aa07b2f6 1785 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1dd30107
NC		 1786 *SvEND(read_target) = '\0';
1787 (void)SvPOK_only(read_target);
0064a8a9 1788 if (fp_utf8 && !IN_BYTES) {
eb5c063a 1789 /* Look at utf8 we got back and count the characters */
1df70142 1790 const char *bend = buffer + count;
eb5c063a 1791 while (buffer < bend) {
d0965105
JH		 1792 if (charstart) {
1793 skip = UTF8SKIP(buffer);
1794 charskip = 0;
1795 }
1796 if (buffer - charskip + skip > bend) {
eb5c063a
NIS		 1797 /* partial character - try for rest of it */
1798 length = skip - (bend-buffer);
aa07b2f6 1799 offset = bend - SvPVX_const(bufsv);
d0965105
JH		 1800 charstart = FALSE;
1801 charskip += count;
eb5c063a
NIS		 1802 goto more_bytes;
1803 }
1804 else {
1805 got++;
1806 buffer += skip;
d0965105
JH		 1807 charstart = TRUE;
1808 charskip = 0;
eb5c063a
NIS		 1809 }
1810 }
1811 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1812 provided amount read (count) was what was requested (length)
1813 */
1814 if (got < wanted && count == length) {
d0965105 1815 length = wanted - got;
aa07b2f6 1816 offset = bend - SvPVX_const(bufsv);
eb5c063a
NIS		 1817 goto more_bytes;
1818 }
1819 /* return value is character count */
1820 count = got;
1821 SvUTF8_on(bufsv);
1822 }
1dd30107
NC		 1823 else if (buffer_utf8) {
1824 /* Let svcatsv upgrade the bytes we read in to utf8.
1825 The buffer is a mortal so will be freed soon. */
1826 sv_catsv_nomg(bufsv, read_target);
1827 }
748a9306 1828 SvSETMAGIC(bufsv);
aac0dd9a 1829 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1830 if (!(IoFLAGS(io) & IOf_UNTAINT))
1831 SvTAINTED_on(bufsv);
a0d0e21e 1832 SP = ORIGMARK;
eb5c063a 1833 PUSHi(count);
a0d0e21e
LW		 1834 RETURN;
1835
1836 say_undef:
1837 SP = ORIGMARK;
1838 RETPUSHUNDEF;
1839}
1840
60504e18 1841PP(pp_syswrite)
a0d0e21e 1842{
27da23d5 1843 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
748a9306 1844 SV *bufsv;
83003860 1845 const char *buffer;
8c99d73e 1846 SSize_t retval;
a0d0e21e 1847 STRLEN blen;
c9cb0f41 1848 STRLEN orig_blen_bytes;
64a1bc8e 1849 const int op_type = PL_op->op_type;
c9cb0f41
NC		 1850 bool doing_utf8;
1851 U8 *tmpbuf = NULL;
159b6efe 1852 GV *const gv = MUTABLE_GV(*++MARK);
91472ad4
NC		 1853 IO *const io = GvIO(gv);
1854
1855 if (op_type == OP_SYSWRITE && io) {
a5e1d062 1856 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1857 if (mg) {
a79db61d 1858 if (MARK == SP - 1) {
c8834ab7
TC		 1859 SV *sv = *SP;
1860 mXPUSHi(sv_len(sv));
a79db61d
AL		 1861 PUTBACK;
1862 }
1863
d682515d
NC		 1864 return Perl_tied_method(aTHX_ "WRITE", mark - 1, MUTABLE_SV(io), mg,
1865 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1866 sp - mark);
64a1bc8e 1867 }
1d603a67 1868 }
a0d0e21e
LW		 1869 if (!gv)
1870 goto say_undef;
64a1bc8e 1871
748a9306 1872 bufsv = *++MARK;
64a1bc8e 1873
748a9306 1874 SETERRNO(0,0);
cf167416 1875 if (!io || !IoIFP(io) || IoTYPE(io) == IoTYPE_RDONLY) {
8c99d73e 1876 retval = -1;
51087808
NC		 1877 if (io && IoIFP(io))
1878 report_wrongway_fh(gv, '<');
1879 else
1880 report_evil_fh(gv);
b5fe5ca2 1881 SETERRNO(EBADF,RMS_IFI);
7d59b7e4
NIS		 1882 goto say_undef;
1883 }
1884
c9cb0f41
NC		 1885 /* Do this first to trigger any overloading. */
1886 buffer = SvPV_const(bufsv, blen);
1887 orig_blen_bytes = blen;
1888 doing_utf8 = DO_UTF8(bufsv);
1889
7d59b7e4 1890 if (PerlIO_isutf8(IoIFP(io))) {
6aa2f6a7 1891 if (!SvUTF8(bufsv)) {
c9cb0f41
NC		 1892 /* We don't modify the original scalar. */
1893 tmpbuf = bytes_to_utf8((const U8*) buffer, &blen);
1894 buffer = (char *) tmpbuf;
1895 doing_utf8 = TRUE;
1896 }
a0d0e21e 1897 }
c9cb0f41
NC		 1898 else if (doing_utf8) {
1899 STRLEN tmplen = blen;
a79db61d 1900 U8 * const result = bytes_from_utf8((const U8*) buffer, &tmplen, &doing_utf8);
c9cb0f41
NC		 1901 if (!doing_utf8) {
1902 tmpbuf = result;
1903 buffer = (char *) tmpbuf;
1904 blen = tmplen;
1905 }
1906 else {
1907 assert((char *)result == buffer);
1908 Perl_croak(aTHX_ "Wide character in %s", OP_DESC(PL_op));
1909 }
7d59b7e4
NIS		 1910 }
1911
e2712234 1912#ifdef HAS_SOCKET
7627e6d0 1913 if (op_type == OP_SEND) {
e2712234
NC		 1914 const int flags = SvIVx(*++MARK);
1915 if (SP > MARK) {
1916 STRLEN mlen;
1917 char * const sockbuf = SvPVx(*++MARK, mlen);
1918 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1919 flags, (struct sockaddr *)sockbuf, mlen);
1920 }
1921 else {
1922 retval
1923 = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, flags);
1924 }
7627e6d0
NC		 1925 }
1926 else
e2712234 1927#endif
7627e6d0 1928 {
c9cb0f41
NC		 1929 Size_t length = 0; /* This length is in characters. */
1930 STRLEN blen_chars;
7d59b7e4 1931 IV offset;
c9cb0f41
NC		 1932
1933 if (doing_utf8) {
1934 if (tmpbuf) {
1935 /* The SV is bytes, and we've had to upgrade it. */
1936 blen_chars = orig_blen_bytes;
1937 } else {
1938 /* The SV really is UTF-8. */
1939 if (SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
1940 /* Don't call sv_len_utf8 again because it will call magic
1941 or overloading a second time, and we might get back a
1942 different result. */
9a206dfd 1943 blen_chars = utf8_length((U8*)buffer, (U8*)buffer + blen);
c9cb0f41
NC		 1944 } else {
1945 /* It's safe, and it may well be cached. */
1946 blen_chars = sv_len_utf8(bufsv);
1947 }
1948 }
1949 } else {
1950 blen_chars = blen;
1951 }
1952
1953 if (MARK >= SP) {
1954 length = blen_chars;
1955 } else {
1956#if Size_t_size > IVSIZE
1957 length = (Size_t)SvNVx(*++MARK);
1958#else
1959 length = (Size_t)SvIVx(*++MARK);
1960#endif
4b0c4b6f
NC		 1961 if ((SSize_t)length < 0) {
1962 Safefree(tmpbuf);
c9cb0f41 1963 DIE(aTHX_ "Negative length");
4b0c4b6f 1964 }
7d59b7e4 1965 }
c9cb0f41 1966
bbce6d69 1967 if (MARK < SP) {
a0d0e21e 1968 offset = SvIVx(*++MARK);
bbce6d69 1969 if (offset < 0) {
4b0c4b6f
NC		 1970 if (-offset > (IV)blen_chars) {
1971 Safefree(tmpbuf);
cea2e8a9 1972 DIE(aTHX_ "Offset outside string");
4b0c4b6f 1973 }
c9cb0f41 1974 offset += blen_chars;
3c946528 1975 } else if (offset > (IV)blen_chars) {
4b0c4b6f 1976 Safefree(tmpbuf);
cea2e8a9 1977 DIE(aTHX_ "Offset outside string");
4b0c4b6f 1978 }
bbce6d69 1979 } else
a0d0e21e 1980 offset = 0;
c9cb0f41
NC		 1981 if (length > blen_chars - offset)
1982 length = blen_chars - offset;
1983 if (doing_utf8) {
1984 /* Here we convert length from characters to bytes. */
1985 if (tmpbuf || SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
1986 /* Either we had to convert the SV, or the SV is magical, or
1987 the SV has overloading, in which case we can't or mustn't
1988 or mustn't call it again. */
1989
1990 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
1991 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1992 } else {
1993 /* It's a real UTF-8 SV, and it's not going to change under
1994 us. Take advantage of any cache. */
1995 I32 start = offset;
1996 I32 len_I32 = length;
1997
1998 /* Convert the start and end character positions to bytes.
1999 Remember that the second argument to sv_pos_u2b is relative
2000 to the first. */
2001 sv_pos_u2b(bufsv, &start, &len_I32);
2002
2003 buffer += start;
2004 length = len_I32;
2005 }
7d59b7e4
NIS		 2006 }
2007 else {
2008 buffer = buffer+offset;
2009 }
a7092146 2010#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 2011 if (IoTYPE(io) == IoTYPE_SOCKET) {
8c99d73e 2012 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
7d59b7e4 2013 buffer, length, 0);
a7092146
GS		 2014 }
2015 else
2016#endif
2017 {
94e4c244 2018 /* See the note at doio.c:do_print about filesize limits. --jhi */
8c99d73e 2019 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
7d59b7e4 2020 buffer, length);
a7092146 2021 }
a0d0e21e 2022 }
c9cb0f41 2023
8c99d73e 2024 if (retval < 0)
a0d0e21e
LW		 2025 goto say_undef;
2026 SP = ORIGMARK;
c9cb0f41 2027 if (doing_utf8)
f36eea10 2028 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
4b0c4b6f 2029
a79db61d 2030 Safefree(tmpbuf);
8c99d73e
GS		 2031#if Size_t_size > IVSIZE
2032 PUSHn(retval);
2033#else
2034 PUSHi(retval);
2035#endif
a0d0e21e
LW		 2036 RETURN;
2037
2038 say_undef:
a79db61d 2039 Safefree(tmpbuf);
a0d0e21e
LW		 2040 SP = ORIGMARK;
2041 RETPUSHUNDEF;
2042}
2043
a0d0e21e
LW		 2044PP(pp_eof)
2045{
27da23d5 2046 dVAR; dSP;
a0d0e21e 2047 GV *gv;
32e65323 2048 IO *io;
a5e1d062 2049 const MAGIC *mg;
bc0c81ca
NC		 2050 /*
2051 * in Perl 5.12 and later, the additional parameter is a bitmask:
2052 * 0 = eof
2053 * 1 = eof(FH)
2054 * 2 = eof() <- ARGV magic
2055 *
2056 * I'll rely on the compiler's trace flow analysis to decide whether to
2057 * actually assign this out here, or punt it into the only block where it is
2058 * used. Doing it out here is DRY on the condition logic.
2059 */
2060 unsigned int which;
a0d0e21e 2061
bc0c81ca 2062 if (MAXARG) {
32e65323 2063 gv = PL_last_in_gv = MUTABLE_GV(POPs); /* eof(FH) */
bc0c81ca
NC		 2064 which = 1;
2065 }
b5f55170
NC		 2066 else {
2067 EXTEND(SP, 1);
2068
bc0c81ca 2069 if (PL_op->op_flags & OPf_SPECIAL) {
b5f55170 2070 gv = PL_last_in_gv = GvEGVx(PL_argvgv); /* eof() - ARGV magic */
bc0c81ca
NC		 2071 which = 2;
2072 }
2073 else {
b5f55170 2074 gv = PL_last_in_gv; /* eof */
bc0c81ca
NC		 2075 which = 0;
2076 }
b5f55170 2077 }
32e65323
CS		 2078
2079 if (!gv)
2080 RETPUSHNO;
2081
2082 if ((io = GvIO(gv)) && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) {
d682515d 2083 return tied_method1("EOF", SP, MUTABLE_SV(io), mg, newSVuv(which));
146174a9 2084 }
4592e6ca 2085
32e65323
CS		 2086 if (!MAXARG && (PL_op->op_flags & OPf_SPECIAL)) { /* eof() */
2087 if (io && !IoIFP(io)) {
2088 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
2089 IoLINES(io) = 0;
2090 IoFLAGS(io) &= ~IOf_START;
2091 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, NULL);
2092 if (GvSV(gv))
2093 sv_setpvs(GvSV(gv), "-");
2094 else
2095 GvSV(gv) = newSVpvs("-");
2096 SvSETMAGIC(GvSV(gv));
2097 }
2098 else if (!nextargv(gv))
2099 RETPUSHYES;
6136c704 2100 }
4592e6ca
NIS		 2101 }
2102
32e65323 2103 PUSHs(boolSV(do_eof(gv)));
a0d0e21e
LW		 2104 RETURN;
2105}
2106
2107PP(pp_tell)
2108{
27da23d5 2109 dVAR; dSP; dTARGET;
301e8125 2110 GV *gv;
5b468f54 2111 IO *io;
a0d0e21e 2112
b64a1294 2113 if (MAXARG != 0 && (TOPs || POPs))
159b6efe 2114 PL_last_in_gv = MUTABLE_GV(POPs);
ac3697cd
NC		 2115 else
2116 EXTEND(SP, 1);
c4420975 2117 gv = PL_last_in_gv;
4592e6ca 2118
9c9f25b8
NC		 2119 io = GvIO(gv);
2120 if (io) {
a5e1d062 2121 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2122 if (mg) {
d682515d 2123 return tied_method0("TELL", SP, MUTABLE_SV(io), mg);
a79db61d 2124 }
4592e6ca 2125 }
f4817f32 2126 else if (!gv) {
f03173f2
RGS		 2127 if (!errno)
2128 SETERRNO(EBADF,RMS_IFI);
2129 PUSHi(-1);
2130 RETURN;
2131 }
4592e6ca 2132
146174a9
CB		 2133#if LSEEKSIZE > IVSIZE
2134 PUSHn( do_tell(gv) );
2135#else
a0d0e21e 2136 PUSHi( do_tell(gv) );
146174a9 2137#endif
a0d0e21e
LW		 2138 RETURN;
2139}
2140
137443ea 2141PP(pp_sysseek)
2142{
27da23d5 2143 dVAR; dSP;
1df70142 2144 const int whence = POPi;
146174a9 2145#if LSEEKSIZE > IVSIZE
7452cf6a 2146 const Off_t offset = (Off_t)SvNVx(POPs);
146174a9 2147#else
7452cf6a 2148 const Off_t offset = (Off_t)SvIVx(POPs);
146174a9 2149#endif
a0d0e21e 2150
159b6efe 2151 GV * const gv = PL_last_in_gv = MUTABLE_GV(POPs);
9c9f25b8 2152 IO *const io = GvIO(gv);
4592e6ca 2153
9c9f25b8 2154 if (io) {
a5e1d062 2155 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2156 if (mg) {
cb50131a 2157#if LSEEKSIZE > IVSIZE
74f0b550 2158 SV *const offset_sv = newSVnv((NV) offset);
cb50131a 2159#else
74f0b550 2160 SV *const offset_sv = newSViv(offset);
cb50131a 2161#endif
bc0c81ca 2162
d682515d
NC		 2163 return tied_method2("SEEK", SP, MUTABLE_SV(io), mg, offset_sv,
2164 newSViv(whence));
a79db61d 2165 }
4592e6ca
NIS		 2166 }
2167
533c011a 2168 if (PL_op->op_type == OP_SEEK)
8903cb82 2169 PUSHs(boolSV(do_seek(gv, offset, whence)));
2170 else {
0bcc34c2 2171 const Off_t sought = do_sysseek(gv, offset, whence);
b448e4fe 2172 if (sought < 0)
146174a9
CB		 2173 PUSHs(&PL_sv_undef);
2174 else {
7452cf6a 2175 SV* const sv = sought ?
146174a9 2176#if LSEEKSIZE > IVSIZE
b448e4fe 2177 newSVnv((NV)sought)
146174a9 2178#else
b448e4fe 2179 newSViv(sought)
146174a9
CB		 2180#endif
2181 : newSVpvn(zero_but_true, ZBTLEN);
6e449a3a 2182 mPUSHs(sv);
146174a9 2183 }
8903cb82 2184 }
a0d0e21e
LW		 2185 RETURN;
2186}
2187
2188PP(pp_truncate)
2189{
97aff369 2190 dVAR;
39644a26 2191 dSP;
8c99d73e
GS		 2192 /* There seems to be no consensus on the length type of truncate()
2193 * and ftruncate(), both off_t and size_t have supporters. In
2194 * general one would think that when using large files, off_t is
2195 * at least as wide as size_t, so using an off_t should be okay. */
2196 /* XXX Configure probe for the length type of *truncate() needed XXX */
0bcc34c2 2197 Off_t len;
a0d0e21e 2198
25342a55 2199#if Off_t_size > IVSIZE
0bcc34c2 2200 len = (Off_t)POPn;
8c99d73e 2201#else
0bcc34c2 2202 len = (Off_t)POPi;
8c99d73e
GS		 2203#endif
2204 /* Checking for length < 0 is problematic as the type might or
301e8125 2205 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 2206 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2207 SETERRNO(0,0);
d05c1ba0 2208 {
5e0adc2d 2209 SV * const sv = POPs;
d05c1ba0
JH		 2210 int result = 1;
2211 GV *tmpgv;
090bf15b
SR		 2212 IO *io;
2213
42409c40
FC		 2214 if (PL_op->op_flags & OPf_SPECIAL
2215 ? (tmpgv = gv_fetchsv(sv, 0, SVt_PVIO), 1)
2216 : !!(tmpgv = MAYBE_DEREF_GV(sv)) ) {
9c9f25b8
NC		 2217 io = GvIO(tmpgv);
2218 if (!io)
090bf15b 2219 result = 0;
d05c1ba0 2220 else {
090bf15b 2221 PerlIO *fp;
090bf15b
SR		 2222 do_ftruncate_io:
2223 TAINT_PROPER("truncate");
2224 if (!(fp = IoIFP(io))) {
2225 result = 0;
2226 }
2227 else {
2228 PerlIO_flush(fp);
cbdc8872 2229#ifdef HAS_TRUNCATE
090bf15b 2230 if (ftruncate(PerlIO_fileno(fp), len) < 0)
301e8125 2231#else
090bf15b 2232 if (my_chsize(PerlIO_fileno(fp), len) < 0)
cbdc8872 2233#endif
090bf15b
SR		 2234 result = 0;
2235 }
d05c1ba0 2236 }
cbdc8872 2237 }
5e0adc2d 2238 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2239 io = MUTABLE_IO(SvRV(sv)); /* *main::FRED{IO} for example */
090bf15b 2240 goto do_ftruncate_io;
5e0adc2d
FC		 2241 }
2242 else {
2243 const char * const name = SvPV_nomg_const_nolen(sv);
d05c1ba0 2244 TAINT_PROPER("truncate");
cbdc8872 2245#ifdef HAS_TRUNCATE
d05c1ba0
JH		 2246 if (truncate(name, len) < 0)
2247 result = 0;
cbdc8872 2248#else
d05c1ba0 2249 {
7452cf6a 2250 const int tmpfd = PerlLIO_open(name, O_RDWR);
d05c1ba0 2251
7452cf6a 2252 if (tmpfd < 0)
cbdc8872 2253 result = 0;
d05c1ba0
JH		 2254 else {
2255 if (my_chsize(tmpfd, len) < 0)
2256 result = 0;
2257 PerlLIO_close(tmpfd);
2258 }
cbdc8872 2259 }
a0d0e21e 2260#endif
d05c1ba0 2261 }
a0d0e21e 2262
d05c1ba0
JH		 2263 if (result)
2264 RETPUSHYES;
2265 if (!errno)
93189314 2266 SETERRNO(EBADF,RMS_IFI);
d05c1ba0
JH		 2267 RETPUSHUNDEF;
2268 }
a0d0e21e
LW		 2269}
2270
a0d0e21e
LW		 2271PP(pp_ioctl)
2272{
97aff369 2273 dVAR; dSP; dTARGET;
7452cf6a 2274 SV * const argsv = POPs;
1df70142 2275 const unsigned int func = POPu;
e1ec3a88 2276 const int optype = PL_op->op_type;
159b6efe 2277 GV * const gv = MUTABLE_GV(POPs);
4608196e 2278 IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2279 char *s;
324aa91a 2280 IV retval;
a0d0e21e 2281
748a9306 2282 if (!io || !argsv || !IoIFP(io)) {
51087808 2283 report_evil_fh(gv);
93189314 2284 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
a0d0e21e
LW		 2285 RETPUSHUNDEF;
2286 }
2287
748a9306 2288 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2289 STRLEN len;
324aa91a 2290 STRLEN need;
748a9306 2291 s = SvPV_force(argsv, len);
324aa91a
HF		 2292 need = IOCPARM_LEN(func);
2293 if (len < need) {
2294 s = Sv_Grow(argsv, need + 1);
2295 SvCUR_set(argsv, need);
a0d0e21e
LW		 2296 }
2297
748a9306 2298 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW		 2299 }
2300 else {
748a9306 2301 retval = SvIV(argsv);
c529f79d 2302 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW		 2303 }
2304
ed4b2e6b 2305 TAINT_PROPER(PL_op_desc[optype]);
a0d0e21e
LW		 2306
2307 if (optype == OP_IOCTL)
2308#ifdef HAS_IOCTL
76e3520e 2309 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2310#else
cea2e8a9 2311 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW		 2312#endif
2313 else
c214f4ad
WB		 2314#ifndef HAS_FCNTL
2315 DIE(aTHX_ "fcntl is not implemented");
2316#else
55497cff 2317#if defined(OS2) && defined(__EMX__)
760ac839 2318 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2319#else
760ac839 2320 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2321#endif
6652bd42 2322#endif
a0d0e21e 2323
6652bd42 2324#if defined(HAS_IOCTL) || defined(HAS_FCNTL)
748a9306
LW		 2325 if (SvPOK(argsv)) {
2326 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2327 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
53e06cf0 2328 OP_NAME(PL_op));
748a9306
LW		 2329 s[SvCUR(argsv)] = 0; /* put our null back */
2330 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW		 2331 }
2332
2333 if (retval == -1)
2334 RETPUSHUNDEF;
2335 if (retval != 0) {
2336 PUSHi(retval);
2337 }
2338 else {
8903cb82 2339 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e 2340 }
4808266b 2341#endif
c214f4ad 2342 RETURN;
a0d0e21e
LW		 2343}
2344
2345PP(pp_flock)
2346{
9cad6237 2347#ifdef FLOCK
97aff369 2348 dVAR; dSP; dTARGET;
a0d0e21e 2349 I32 value;
7452cf6a 2350 const int argtype = POPi;
1f28cbca 2351 GV * const gv = MUTABLE_GV(POPs);
9c9f25b8
NC		 2352 IO *const io = GvIO(gv);
2353 PerlIO *const fp = io ? IoIFP(io) : NULL;
16d20bd9 2354
0bcc34c2 2355 /* XXX Looks to me like io is always NULL at this point */
a0d0e21e 2356 if (fp) {
68dc0745 2357 (void)PerlIO_flush(fp);
76e3520e 2358 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2359 }
cb50131a 2360 else {
51087808 2361 report_evil_fh(gv);
a0d0e21e 2362 value = 0;
93189314 2363 SETERRNO(EBADF,RMS_IFI);
cb50131a 2364 }
a0d0e21e
LW		 2365 PUSHi(value);
2366 RETURN;
2367#else
cea2e8a9 2368 DIE(aTHX_ PL_no_func, "flock()");
a0d0e21e
LW		 2369#endif
2370}
2371
2372/* Sockets. */
2373
7627e6d0
NC		 2374#ifdef HAS_SOCKET
2375
a0d0e21e
LW		 2376PP(pp_socket)
2377{
97aff369 2378 dVAR; dSP;
7452cf6a
AL		 2379 const int protocol = POPi;
2380 const int type = POPi;
2381 const int domain = POPi;
159b6efe 2382 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2383 IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e
LW		 2384 int fd;
2385
9c9f25b8 2386 if (!io) {
51087808 2387 report_evil_fh(gv);
5ee74a84 2388 if (io && IoIFP(io))
c289d2f7 2389 do_close(gv, FALSE);
93189314 2390 SETERRNO(EBADF,LIB_INVARG);
a0d0e21e
LW		 2391 RETPUSHUNDEF;
2392 }
2393
57171420
BS		 2394 if (IoIFP(io))
2395 do_close(gv, FALSE);
2396
a0d0e21e 2397 TAINT_PROPER("socket");
6ad3d225 2398 fd = PerlSock_socket(domain, type, protocol);
a0d0e21e
LW		 2399 if (fd < 0)
2400 RETPUSHUNDEF;
460c8493
IZ		 2401 IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2402 IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2403 IoTYPE(io) = IoTYPE_SOCKET;
a0d0e21e 2404 if (!IoIFP(io) || !IoOFP(io)) {
760ac839
LW		 2405 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2406 if (IoOFP(io)) PerlIO_close(IoOFP(io));
6ad3d225 2407 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
a0d0e21e
LW		 2408 RETPUSHUNDEF;
2409 }
8d2a6795
GS		 2410#if defined(HAS_FCNTL) && defined(F_SETFD)
2411 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2412#endif
a0d0e21e 2413
d5ff79b3
OF		 2414#ifdef EPOC
2415 setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
2416#endif
2417
a0d0e21e 2418 RETPUSHYES;
a0d0e21e 2419}
7627e6d0 2420#endif
a0d0e21e
LW		 2421
2422PP(pp_sockpair)
2423{
c95c94b1 2424#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
97aff369 2425 dVAR; dSP;
7452cf6a
AL		 2426 const int protocol = POPi;
2427 const int type = POPi;
2428 const int domain = POPi;
159b6efe
NC		 2429 GV * const gv2 = MUTABLE_GV(POPs);
2430 GV * const gv1 = MUTABLE_GV(POPs);
eb578fdb
KW		 2431 IO * const io1 = gv1 ? GvIOn(gv1) : NULL;
2432 IO * const io2 = gv2 ? GvIOn(gv2) : NULL;
a0d0e21e
LW		 2433 int fd[2];
2434
9c9f25b8
NC		 2435 if (!io1)
2436 report_evil_fh(gv1);
2437 if (!io2)
2438 report_evil_fh(gv2);
a0d0e21e 2439
46d2cc54 2440 if (io1 && IoIFP(io1))
dc0d0a5f 2441 do_close(gv1, FALSE);
46d2cc54 2442 if (io2 && IoIFP(io2))
dc0d0a5f 2443 do_close(gv2, FALSE);
57171420 2444
46d2cc54
NC		 2445 if (!io1 || !io2)
2446 RETPUSHUNDEF;
2447
a0d0e21e 2448 TAINT_PROPER("socketpair");
6ad3d225 2449 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
a0d0e21e 2450 RETPUSHUNDEF;
460c8493
IZ		 2451 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2452 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
50952442 2453 IoTYPE(io1) = IoTYPE_SOCKET;
460c8493
IZ		 2454 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2455 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
50952442 2456 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2457 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW		 2458 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2459 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2460 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW		 2461 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2462 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2463 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW		 2464 RETPUSHUNDEF;
2465 }
8d2a6795
GS		 2466#if defined(HAS_FCNTL) && defined(F_SETFD)
2467 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2468 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2469#endif
a0d0e21e
LW		 2470
2471 RETPUSHYES;
2472#else
cea2e8a9 2473 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW		 2474#endif
2475}
2476
7627e6d0
NC		 2477#ifdef HAS_SOCKET
2478
a0d0e21e
LW		 2479PP(pp_bind)
2480{
97aff369 2481 dVAR; dSP;
7452cf6a 2482 SV * const addrsv = POPs;
349d4f2f
NC		 2483 /* OK, so on what platform does bind modify addr? */
2484 const char *addr;
159b6efe 2485 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2486 IO * const io = GvIOn(gv);
a0d0e21e 2487 STRLEN len;
32b81f04 2488 const int op_type = PL_op->op_type;
a0d0e21e
LW		 2489
2490 if (!io || !IoIFP(io))
2491 goto nuts;
2492
349d4f2f 2493 addr = SvPV_const(addrsv, len);
32b81f04
NC		 2494 TAINT_PROPER(PL_op_desc[op_type]);
2495 if ((op_type == OP_BIND
2496 ? PerlSock_bind(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len)
2497 : PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len))
2498 >= 0)
a0d0e21e
LW		 2499 RETPUSHYES;
2500 else
2501 RETPUSHUNDEF;
2502
2503nuts:
fbcda526 2504 report_evil_fh(gv);
93189314 2505 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2506 RETPUSHUNDEF;
a0d0e21e
LW		 2507}
2508
2509PP(pp_listen)
2510{
97aff369 2511 dVAR; dSP;
7452cf6a 2512 const int backlog = POPi;
159b6efe 2513 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2514 IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2515
9c9f25b8 2516 if (!io || !IoIFP(io))
a0d0e21e
LW		 2517 goto nuts;
2518
6ad3d225 2519 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW		 2520 RETPUSHYES;
2521 else
2522 RETPUSHUNDEF;
2523
2524nuts:
fbcda526 2525 report_evil_fh(gv);
93189314 2526 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2527 RETPUSHUNDEF;
a0d0e21e
LW		 2528}
2529
2530PP(pp_accept)
2531{
97aff369 2532 dVAR; dSP; dTARGET;
eb578fdb
KW		 2533 IO *nstio;
2534 IO *gstio;
93d47a36 2535 char namebuf[MAXPATHLEN];
b5afd346 2536#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
93d47a36
JH		 2537 Sock_size_t len = sizeof (struct sockaddr_in);
2538#else
2539 Sock_size_t len = sizeof namebuf;
2540#endif
159b6efe
NC		 2541 GV * const ggv = MUTABLE_GV(POPs);
2542 GV * const ngv = MUTABLE_GV(POPs);
a0d0e21e
LW		 2543 int fd;
2544
a0d0e21e
LW		 2545 if (!ngv)
2546 goto badexit;
2547 if (!ggv)
2548 goto nuts;
2549
2550 gstio = GvIO(ggv);
2551 if (!gstio || !IoIFP(gstio))
2552 goto nuts;
2553
2554 nstio = GvIOn(ngv);
93d47a36 2555 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
e294cc5d
JH		 2556#if defined(OEMVS)
2557 if (len == 0) {
2558 /* Some platforms indicate zero length when an AF_UNIX client is
2559 * not bound. Simulate a non-zero-length sockaddr structure in
2560 * this case. */
2561 namebuf[0] = 0; /* sun_len */
2562 namebuf[1] = AF_UNIX; /* sun_family */
2563 len = 2;
2564 }
2565#endif
2566
a0d0e21e
LW		 2567 if (fd < 0)
2568 goto badexit;
a70048fb
AB		 2569 if (IoIFP(nstio))
2570 do_close(ngv, FALSE);
460c8493
IZ		 2571 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2572 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2573 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2574 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW		 2575 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2576 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2577 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW		 2578 goto badexit;
2579 }
8d2a6795
GS		 2580#if defined(HAS_FCNTL) && defined(F_SETFD)
2581 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2582#endif
a0d0e21e 2583
ed79a026 2584#ifdef EPOC
93d47a36 2585 len = sizeof (struct sockaddr_in); /* EPOC somehow truncates info */
a9f1f6b0 2586 setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
ed79a026 2587#endif
381c1bae 2588#ifdef __SCO_VERSION__
93d47a36 2589 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
381c1bae 2590#endif
ed79a026 2591
93d47a36 2592 PUSHp(namebuf, len);
a0d0e21e
LW		 2593 RETURN;
2594
2595nuts:
fbcda526 2596 report_evil_fh(ggv);
93189314 2597 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2598
2599badexit:
2600 RETPUSHUNDEF;
2601
a0d0e21e
LW		 2602}
2603
2604PP(pp_shutdown)
2605{
97aff369 2606 dVAR; dSP; dTARGET;
7452cf6a 2607 const int how = POPi;
159b6efe 2608 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2609 IO * const io = GvIOn(gv);
a0d0e21e
LW		 2610
2611 if (!io || !IoIFP(io))
2612 goto nuts;
2613
6ad3d225 2614 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW		 2615 RETURN;
2616
2617nuts:
fbcda526 2618 report_evil_fh(gv);
93189314 2619 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2620 RETPUSHUNDEF;
a0d0e21e
LW		 2621}
2622
a0d0e21e
LW		 2623PP(pp_ssockopt)
2624{
97aff369 2625 dVAR; dSP;
7452cf6a 2626 const int optype = PL_op->op_type;
561b68a9 2627 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
7452cf6a
AL		 2628 const unsigned int optname = (unsigned int) POPi;
2629 const unsigned int lvl = (unsigned int) POPi;
159b6efe 2630 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2631 IO * const io = GvIOn(gv);
a0d0e21e 2632 int fd;
1e422769 2633 Sock_size_t len;
a0d0e21e 2634
a0d0e21e
LW		 2635 if (!io || !IoIFP(io))
2636 goto nuts;
2637
760ac839 2638 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2639 switch (optype) {
2640 case OP_GSOCKOPT:
748a9306 2641 SvGROW(sv, 257);
a0d0e21e 2642 (void)SvPOK_only(sv);
748a9306
LW		 2643 SvCUR_set(sv,256);
2644 *SvEND(sv) ='\0';
1e422769 2645 len = SvCUR(sv);
6ad3d225 2646 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2647 goto nuts2;
1e422769 2648 SvCUR_set(sv, len);
748a9306 2649 *SvEND(sv) ='\0';
a0d0e21e
LW		 2650 PUSHs(sv);
2651 break;
2652 case OP_SSOCKOPT: {
1215b447
JH		 2653#if defined(__SYMBIAN32__)
2654# define SETSOCKOPT_OPTION_VALUE_T void *
2655#else
2656# define SETSOCKOPT_OPTION_VALUE_T const char *
2657#endif
2658 /* XXX TODO: We need to have a proper type (a Configure probe,
2659 * etc.) for what the C headers think of the third argument of
2660 * setsockopt(), the option_value read-only buffer: is it
2661 * a "char *", or a "void *", const or not. Some compilers
2662 * don't take kindly to e.g. assuming that "char *" implicitly
2663 * promotes to a "void *", or to explicitly promoting/demoting
2664 * consts to non/vice versa. The "const void *" is the SUS
2665 * definition, but that does not fly everywhere for the above
2666 * reasons. */
2667 SETSOCKOPT_OPTION_VALUE_T buf;
1e422769 2668 int aint;
2669 if (SvPOKp(sv)) {
2d8e6c8d 2670 STRLEN l;
1215b447 2671 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2d8e6c8d 2672 len = l;
1e422769 2673 }
56ee1660 2674 else {
a0d0e21e 2675 aint = (int)SvIV(sv);
1215b447 2676 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
a0d0e21e
LW		 2677 len = sizeof(int);
2678 }
6ad3d225 2679 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2680 goto nuts2;
3280af22 2681 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 2682 }
2683 break;
2684 }
2685 RETURN;
2686
2687nuts:
fbcda526 2688 report_evil_fh(gv);
93189314 2689 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2690nuts2:
2691 RETPUSHUNDEF;
2692
a0d0e21e
LW		 2693}
2694
a0d0e21e
LW		 2695PP(pp_getpeername)
2696{
97aff369 2697 dVAR; dSP;
7452cf6a 2698 const int optype = PL_op->op_type;
159b6efe 2699 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2700 IO * const io = GvIOn(gv);
7452cf6a 2701 Sock_size_t len;
a0d0e21e
LW		 2702 SV *sv;
2703 int fd;
a0d0e21e
LW		 2704
2705 if (!io || !IoIFP(io))
2706 goto nuts;
2707
561b68a9 2708 sv = sv_2mortal(newSV(257));
748a9306 2709 (void)SvPOK_only(sv);
1e422769 2710 len = 256;
2711 SvCUR_set(sv, len);
748a9306 2712 *SvEND(sv) ='\0';
760ac839 2713 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2714 switch (optype) {
2715 case OP_GETSOCKNAME:
6ad3d225 2716 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW		 2717 goto nuts2;
2718 break;
2719 case OP_GETPEERNAME:
6ad3d225 2720 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2721 goto nuts2;
490ab354
JH		 2722#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2723 {
2724 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";
2725 /* If the call succeeded, make sure we don't have a zeroed port/addr */
349d4f2f 2726 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2fbb330f 2727 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
490ab354 2728 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2729 goto nuts2;
490ab354
JH		 2730 }
2731 }
2732#endif
a0d0e21e
LW		 2733 break;
2734 }
13826f2c
CS		 2735#ifdef BOGUS_GETNAME_RETURN
2736 /* Interactive Unix, getpeername() and getsockname()
2737 does not return valid namelen */
1e422769 2738 if (len == BOGUS_GETNAME_RETURN)
2739 len = sizeof(struct sockaddr);
13826f2c 2740#endif
1e422769 2741 SvCUR_set(sv, len);
748a9306 2742 *SvEND(sv) ='\0';
a0d0e21e
LW		 2743 PUSHs(sv);
2744 RETURN;
2745
2746nuts:
fbcda526 2747 report_evil_fh(gv);
93189314 2748 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2749nuts2:
2750 RETPUSHUNDEF;
7627e6d0 2751}
a0d0e21e 2752
a0d0e21e 2753#endif
a0d0e21e
LW		 2754
2755/* Stat calls. */
2756
a0d0e21e
LW		 2757PP(pp_stat)
2758{
97aff369 2759 dVAR;
39644a26 2760 dSP;
10edeb5d 2761 GV *gv = NULL;
55dd8d50 2762 IO *io = NULL;
54310121 2763 I32 gimme;
a0d0e21e 2764 I32 max = 13;
109c43ed 2765 SV* sv;
a0d0e21e 2766
109c43ed
FC		 2767 if (PL_op->op_flags & OPf_REF ? (gv = cGVOP_gv, 1)
2768 : !!(sv=POPs, gv = MAYBE_DEREF_GV(sv))) {
8a4e5b40 2769 if (PL_op->op_type == OP_LSTAT) {
5d3e98de 2770 if (gv != PL_defgv) {
5d329e6e 2771 do_fstat_warning_check:
a2a5de95 2772 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
93fad930
FC		 2773 "lstat() on filehandle%s%"SVf,
2774 gv ? " " : "",
2775 SVfARG(gv
bf29d05f
BF		 2776 ? sv_2mortal(newSVhek(GvENAME_HEK(gv)))
2777 : &PL_sv_no));
5d3e98de 2778 } else if (PL_laststype != OP_LSTAT)
b042df57 2779 /* diag_listed_as: The stat preceding %s wasn't an lstat */
8a4e5b40 2780 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
8a4e5b40
DD		 2781 }
2782
2dd78f96 2783 if (gv != PL_defgv) {
b8413ac3 2784 bool havefp;
0d5064f1 2785 do_fstat_have_io:
b8413ac3 2786 havefp = FALSE;
3280af22 2787 PL_laststype = OP_STAT;
0d5064f1 2788 PL_statgv = gv ? gv : (GV *)io;
76f68e9b 2789 sv_setpvs(PL_statname, "");
5228a96c 2790 if(gv) {
ad02613c 2791 io = GvIO(gv);
0d5064f1
FC		 2792 }
2793 if (io) {
5228a96c
SP		 2794 if (IoIFP(io)) {
2795 PL_laststatval =
2796 PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
8080e3c8 2797 havefp = TRUE;
5228a96c 2798 } else if (IoDIRP(io)) {
5228a96c 2799 PL_laststatval =
3497a01f 2800 PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache);
8080e3c8 2801 havefp = TRUE;
5228a96c
SP		 2802 } else {
2803 PL_laststatval = -1;
2804 }
5228a96c 2805 }
05bb32d2 2806 else PL_laststatval = -1;
daa30a68 2807 if (PL_laststatval < 0 && !havefp) report_evil_fh(gv);
5228a96c
SP		 2808 }
2809
9ddeeac9 2810 if (PL_laststatval < 0) {
a0d0e21e 2811 max = 0;
9ddeeac9 2812 }
a0d0e21e
LW		 2813 }
2814 else {
109c43ed 2815 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2816 io = MUTABLE_IO(SvRV(sv));
ad02613c
SP		 2817 if (PL_op->op_type == OP_LSTAT)
2818 goto do_fstat_warning_check;
2819 goto do_fstat_have_io;
2820 }
2821
4bac9ae4 2822 SvTAINTED_off(PL_statname); /* previous tainting irrelevant */
109c43ed 2823 sv_setpv(PL_statname, SvPV_nomg_const_nolen(sv));
a0714e2c 2824 PL_statgv = NULL;
533c011a
NIS		 2825 PL_laststype = PL_op->op_type;
2826 if (PL_op->op_type == OP_LSTAT)
0510663f 2827 PL_laststatval = PerlLIO_lstat(SvPV_nolen_const(PL_statname), &PL_statcache);
a0d0e21e 2828 else
0510663f 2829 PL_laststatval = PerlLIO_stat(SvPV_nolen_const(PL_statname), &PL_statcache);
3280af22 2830 if (PL_laststatval < 0) {
0510663f 2831 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname), '\n'))
9014280d 2832 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
a0d0e21e
LW		 2833 max = 0;
2834 }
2835 }
2836
54310121 2837 gimme = GIMME_V;
2838 if (gimme != G_ARRAY) {
2839 if (gimme != G_VOID)
2840 XPUSHs(boolSV(max));
2841 RETURN;
a0d0e21e
LW		 2842 }
2843 if (max) {
36477c24 2844 EXTEND(SP, max);
2845 EXTEND_MORTAL(max);
6e449a3a 2846 mPUSHi(PL_statcache.st_dev);
8d8cba88
TC		 2847#if ST_INO_SIZE > IVSIZE
2848 mPUSHn(PL_statcache.st_ino);
2849#else
2850# if ST_INO_SIGN <= 0
6e449a3a 2851 mPUSHi(PL_statcache.st_ino);
8d8cba88
TC		 2852# else
2853 mPUSHu(PL_statcache.st_ino);
2854# endif
2855#endif
6e449a3a
MHM		 2856 mPUSHu(PL_statcache.st_mode);
2857 mPUSHu(PL_statcache.st_nlink);
146174a9 2858#if Uid_t_size > IVSIZE
6e449a3a 2859 mPUSHn(PL_statcache.st_uid);
146174a9 2860#else
23dcd6c8 2861# if Uid_t_sign <= 0
6e449a3a 2862 mPUSHi(PL_statcache.st_uid);
23dcd6c8 2863# else
6e449a3a 2864 mPUSHu(PL_statcache.st_uid);
23dcd6c8 2865# endif
146174a9 2866#endif
301e8125 2867#if Gid_t_size > IVSIZE
6e449a3a 2868 mPUSHn(PL_statcache.st_gid);
146174a9 2869#else
23dcd6c8 2870# if Gid_t_sign <= 0
6e449a3a 2871 mPUSHi(PL_statcache.st_gid);
23dcd6c8 2872# else
6e449a3a 2873 mPUSHu(PL_statcache.st_gid);
23dcd6c8 2874# endif
146174a9 2875#endif
cbdc8872 2876#ifdef USE_STAT_RDEV
6e449a3a 2877 mPUSHi(PL_statcache.st_rdev);
cbdc8872 2878#else
84bafc02 2879 PUSHs(newSVpvs_flags("", SVs_TEMP));
cbdc8872 2880#endif
146174a9 2881#if Off_t_size > IVSIZE
6e449a3a 2882 mPUSHn(PL_statcache.st_size);
146174a9 2883#else
6e449a3a 2884 mPUSHi(PL_statcache.st_size);
146174a9 2885#endif
cbdc8872 2886#ifdef BIG_TIME
6e449a3a
MHM		 2887 mPUSHn(PL_statcache.st_atime);
2888 mPUSHn(PL_statcache.st_mtime);
2889 mPUSHn(PL_statcache.st_ctime);
cbdc8872 2890#else
6e449a3a
MHM		 2891 mPUSHi(PL_statcache.st_atime);
2892 mPUSHi(PL_statcache.st_mtime);
2893 mPUSHi(PL_statcache.st_ctime);
cbdc8872 2894#endif
a0d0e21e 2895#ifdef USE_STAT_BLOCKS
6e449a3a
MHM		 2896 mPUSHu(PL_statcache.st_blksize);
2897 mPUSHu(PL_statcache.st_blocks);
a0d0e21e 2898#else
84bafc02
NC		 2899 PUSHs(newSVpvs_flags("", SVs_TEMP));
2900 PUSHs(newSVpvs_flags("", SVs_TEMP));
a0d0e21e
LW		 2901#endif
2902 }
2903 RETURN;
2904}
2905
6c48f025
NC		 2906/* All filetest ops avoid manipulating the perl stack pointer in their main
2907 bodies (since commit d2c4d2d1e22d3125), and return using either
2908 S_ft_return_false() or S_ft_return_true(). These two helper functions are
2909 the only two which manipulate the perl stack. To ensure that no stack
2910 manipulation macros are used, the filetest ops avoid defining a local copy
2911 of the stack pointer with dSP. */
2912
8db8f6b6
FC		 2913/* If the next filetest is stacked up with this one
2914 (PL_op->op_private & OPpFT_STACKING), we leave
2915 the original argument on the stack for success,
2916 and skip the stacked operators on failure.
2917 The next few macros/functions take care of this.
2918*/
2919
2920static OP *
9a6b02e8 2921S_ft_return_false(pTHX_ SV *ret) {
8db8f6b6 2922 OP *next = NORMAL;
697f9d37
NC		 2923 dSP;
2924
226b9201 2925 if (PL_op->op_flags & OPf_REF) XPUSHs(ret);
8db8f6b6
FC		 2926 else SETs(ret);
2927 PUTBACK;
697f9d37 2928
9a6b02e8
NC		 2929 if (PL_op->op_private & OPpFT_STACKING) {
2930 while (OP_IS_FILETEST(next->op_type)
2931 && next->op_private & OPpFT_STACKED)
2932 next = next->op_next;
2933 }
8db8f6b6
FC		 2934 return next;
2935}
2936
07ed4d4b
NC		 2937PERL_STATIC_INLINE OP *
2938S_ft_return_true(pTHX_ SV *ret) {
2939 dSP;
2940 if (PL_op->op_flags & OPf_REF)
2941 XPUSHs(PL_op->op_private & OPpFT_STACKING ? (SV *)cGVOP_gv : (ret));
2942 else if (!(PL_op->op_private & OPpFT_STACKING))
2943 SETs(ret);
2944 PUTBACK;
2945 return NORMAL;
2946}
8db8f6b6 2947
48d023d6
NC		 2948#define FT_RETURNNO return S_ft_return_false(aTHX_ &PL_sv_no)
2949#define FT_RETURNUNDEF return S_ft_return_false(aTHX_ &PL_sv_undef)
2950#define FT_RETURNYES return S_ft_return_true(aTHX_ &PL_sv_yes)
8db8f6b6 2951
6f1401dc 2952#define tryAMAGICftest_MG(chr) STMT_START { \
d2f67720 2953 if ( (SvFLAGS(*PL_stack_sp) & (SVf_ROK|SVs_GMG)) \
8db8f6b6
FC		 2954 && PL_op->op_flags & OPf_KIDS) { \
2955 OP *next = S_try_amagic_ftest(aTHX_ chr); \
2956 if (next) return next; \
2957 } \
6f1401dc
DM		 2958 } STMT_END
2959
8db8f6b6 2960STATIC OP *
6f1401dc
DM		 2961S_try_amagic_ftest(pTHX_ char chr) {
2962 dVAR;
d2f67720 2963 SV *const arg = *PL_stack_sp;
6f1401dc
DM		 2964
2965 assert(chr != '?');
c5780028 2966 if (!(PL_op->op_private & OPpFT_STACKING)) SvGETMAGIC(arg);
6f1401dc 2967
d2f67720 2968 if (SvAMAGIC(arg))
6f1401dc
DM		 2969 {
2970 const char tmpchr = chr;
6f1401dc
DM		 2971 SV * const tmpsv = amagic_call(arg,
2972 newSVpvn_flags(&tmpchr, 1, SVs_TEMP),
2973 ftest_amg, AMGf_unary);
2974
2975 if (!tmpsv)
8db8f6b6 2976 return NULL;
6f1401dc 2977
48d023d6
NC		 2978 return SvTRUE(tmpsv)
2979 ? S_ft_return_true(aTHX_ tmpsv) : S_ft_return_false(aTHX_ tmpsv);
6f1401dc 2980 }
8db8f6b6 2981 return NULL;
6f1401dc
DM		 2982}
2983
2984
a0d0e21e
LW		 2985PP(pp_ftrread)
2986{
97aff369 2987 dVAR;
9cad6237 2988 I32 result;
af9e49b4
NC		 2989 /* Not const, because things tweak this below. Not bool, because there's
2990 no guarantee that OPp_FT_ACCESS is <= CHAR_MAX */
2991#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2992 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
2993 /* Giving some sort of initial value silences compilers. */
2994# ifdef R_OK
2995 int access_mode = R_OK;
2996# else
2997 int access_mode = 0;
2998# endif
5ff3f7a4 2999#else
af9e49b4
NC		 3000 /* access_mode is never used, but leaving use_access in makes the
3001 conditional compiling below much clearer. */
3002 I32 use_access = 0;
5ff3f7a4 3003#endif
2dcac756 3004 Mode_t stat_mode = S_IRUSR;
a0d0e21e 3005
af9e49b4 3006 bool effective = FALSE;
07fe7c6a 3007 char opchar = '?';
af9e49b4 3008
7fb13887
BM		 3009 switch (PL_op->op_type) {
3010 case OP_FTRREAD: opchar = 'R'; break;
3011 case OP_FTRWRITE: opchar = 'W'; break;
3012 case OP_FTREXEC: opchar = 'X'; break;
3013 case OP_FTEREAD: opchar = 'r'; break;
3014 case OP_FTEWRITE: opchar = 'w'; break;
3015 case OP_FTEEXEC: opchar = 'x'; break;
3016 }
6f1401dc 3017 tryAMAGICftest_MG(opchar);
7fb13887 3018
af9e49b4
NC		 3019 switch (PL_op->op_type) {
3020 case OP_FTRREAD:
3021#if !(defined(HAS_ACCESS) && defined(R_OK))
3022 use_access = 0;
3023#endif
3024 break;
3025
3026 case OP_FTRWRITE:
5ff3f7a4 3027#if defined(HAS_ACCESS) && defined(W_OK)
af9e49b4 3028 access_mode = W_OK;
5ff3f7a4 3029#else
af9e49b4 3030 use_access = 0;
5ff3f7a4 3031#endif
af9e49b4
NC		 3032 stat_mode = S_IWUSR;
3033 break;
a0d0e21e 3034
af9e49b4 3035 case OP_FTREXEC:
5ff3f7a4 3036#if defined(HAS_ACCESS) && defined(X_OK)
af9e49b4 3037 access_mode = X_OK;
5ff3f7a4 3038#else
af9e49b4 3039 use_access = 0;
5ff3f7a4 3040#endif
af9e49b4
NC		 3041 stat_mode = S_IXUSR;
3042 break;
a0d0e21e 3043
af9e49b4 3044 case OP_FTEWRITE:
faee0e31 3045#ifdef PERL_EFF_ACCESS
af9e49b4 3046 access_mode = W_OK;
5ff3f7a4 3047#endif
af9e49b4 3048 stat_mode = S_IWUSR;
7fb13887 3049 /* fall through */
a0d0e21e 3050
af9e49b4
NC		 3051 case OP_FTEREAD:
3052#ifndef PERL_EFF_ACCESS
3053 use_access = 0;
3054#endif
3055 effective = TRUE;
3056 break;
3057
af9e49b4 3058 case OP_FTEEXEC:
faee0e31 3059#ifdef PERL_EFF_ACCESS
b376053d 3060 access_mode = X_OK;
5ff3f7a4 3061#else
af9e49b4 3062 use_access = 0;
5ff3f7a4 3063#endif
af9e49b4
NC		 3064 stat_mode = S_IXUSR;
3065 effective = TRUE;
3066 break;
3067 }
a0d0e21e 3068
af9e49b4
NC		 3069 if (use_access) {
3070#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
d2f67720 3071 const char *name = SvPV_nolen(*PL_stack_sp);
af9e49b4
NC		 3072 if (effective) {
3073# ifdef PERL_EFF_ACCESS
3074 result = PERL_EFF_ACCESS(name, access_mode);
3075# else
3076 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
3077 OP_NAME(PL_op));
3078# endif
3079 }
3080 else {
3081# ifdef HAS_ACCESS
3082 result = access(name, access_mode);
3083# else
3084 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
3085# endif
3086 }
5ff3f7a4 3087 if (result == 0)
d2c4d2d1 3088 FT_RETURNYES;
5ff3f7a4 3089 if (result < 0)
d2c4d2d1
FC		 3090 FT_RETURNUNDEF;
3091 FT_RETURNNO;
af9e49b4 3092#endif
22865c03 3093 }
af9e49b4 3094
40c852de 3095 result = my_stat_flags(0);
a0d0e21e 3096 if (result < 0)
8db8f6b6 3097 FT_RETURNUNDEF;
af9e49b4 3098 if (cando(stat_mode, effective, &PL_statcache))
8db8f6b6
FC		 3099 FT_RETURNYES;
3100 FT_RETURNNO;
a0d0e21e
LW		 3101}
3102
3103PP(pp_ftis)
3104{
97aff369 3105 dVAR;
fbb0b3b3 3106 I32 result;
d7f0a2f4 3107 const int op_type = PL_op->op_type;
07fe7c6a 3108 char opchar = '?';
07fe7c6a
BM		 3109
3110 switch (op_type) {
3111 case OP_FTIS: opchar = 'e'; break;
3112 case OP_FTSIZE: opchar = 's'; break;
3113 case OP_FTMTIME: opchar = 'M'; break;
3114 case OP_FTCTIME: opchar = 'C'; break;
3115 case OP_FTATIME: opchar = 'A'; break;
3116 }
6f1401dc 3117 tryAMAGICftest_MG(opchar);
07fe7c6a 3118
40c852de 3119 result = my_stat_flags(0);
a0d0e21e 3120 if (result < 0)
8db8f6b6 3121 FT_RETURNUNDEF;
d7f0a2f4 3122 if (op_type == OP_FTIS)
8db8f6b6 3123 FT_RETURNYES;
957b0e1d 3124 {
d7f0a2f4
NC		 3125 /* You can't dTARGET inside OP_FTIS, because you'll get
3126 "panic: pad_sv po" - the op is not flagged to have a target. */
957b0e1d 3127 dTARGET;
d7f0a2f4 3128 switch (op_type) {
957b0e1d
NC		 3129 case OP_FTSIZE:
3130#if Off_t_size > IVSIZE
8db8f6b6 3131 sv_setnv(TARG, (NV)PL_statcache.st_size);
957b0e1d 3132#else
8db8f6b6 3133 sv_setiv(TARG, (IV)PL_statcache.st_size);
957b0e1d
NC		 3134#endif
3135 break;
3136 case OP_FTMTIME:
8db8f6b6
FC		 3137 sv_setnv(TARG,
3138 ((NV)PL_basetime - PL_statcache.st_mtime) / 86400.0 );
957b0e1d
NC		 3139 break;
3140 case OP_FTATIME:
8db8f6b6
FC		 3141 sv_setnv(TARG,
3142 ((NV)PL_basetime - PL_statcache.st_atime) / 86400.0 );
957b0e1d
NC		 3143 break;
3144 case OP_FTCTIME:
8db8f6b6
FC		 3145 sv_setnv(TARG,
3146 ((NV)PL_basetime - PL_statcache.st_ctime) / 86400.0 );
957b0e1d
NC		 3147 break;
3148 }
8db8f6b6 3149 SvSETMAGIC(TARG);
48d023d6
NC		 3150 return SvTRUE_nomg(TARG)
3151 ? S_ft_return_true(aTHX_ TARG) : S_ft_return_false(aTHX_ TARG);
957b0e1d 3152 }
a0d0e21e
LW		 3153}
3154
a0d0e21e
LW		 3155PP(pp_ftrowned)
3156{
97aff369 3157 dVAR;
fbb0b3b3 3158 I32 result;
07fe7c6a 3159 char opchar = '?';
17ad201a 3160
7fb13887
BM		 3161 switch (PL_op->op_type) {
3162 case OP_FTROWNED: opchar = 'O'; break;
3163 case OP_FTEOWNED: opchar = 'o'; break;
3164 case OP_FTZERO: opchar = 'z'; break;
3165 case OP_FTSOCK: opchar = 'S'; break;
3166 case OP_FTCHR: opchar = 'c'; break;
3167 case OP_FTBLK: opchar = 'b'; break;
3168 case OP_FTFILE: opchar = 'f'; break;
3169 case OP_FTDIR: opchar = 'd'; break;
3170 case OP_FTPIPE: opchar = 'p'; break;
3171 case OP_FTSUID: opchar = 'u'; break;
3172 case OP_FTSGID: opchar = 'g'; break;
3173 case OP_FTSVTX: opchar = 'k'; break;
3174 }
6f1401dc 3175 tryAMAGICftest_MG(opchar);
7fb13887 3176
17ad201a
NC		 3177 /* I believe that all these three are likely to be defined on most every
3178 system these days. */
3179#ifndef S_ISUID
c410dd6a 3180 if(PL_op->op_type == OP_FTSUID) {
8db8f6b6 3181 FT_RETURNNO;
c410dd6a 3182 }
17ad201a
NC		 3183#endif
3184#ifndef S_ISGID
c410dd6a 3185 if(PL_op->op_type == OP_FTSGID) {
8db8f6b6 3186 FT_RETURNNO;
c410dd6a 3187 }
17ad201a
NC		 3188#endif
3189#ifndef S_ISVTX
c410dd6a 3190 if(PL_op->op_type == OP_FTSVTX) {
8db8f6b6 3191 FT_RETURNNO;
c410dd6a 3192 }
17ad201a
NC		 3193#endif
3194
40c852de 3195 result = my_stat_flags(0);
a0d0e21e 3196 if (result < 0)
8db8f6b6 3197 FT_RETURNUNDEF;
f1cb2d48
NC		 3198 switch (PL_op->op_type) {
3199 case OP_FTROWNED:
985213f2 3200 if (PL_statcache.st_uid == PerlProc_getuid())
8db8f6b6 3201 FT_RETURNYES;
f1cb2d48
NC		 3202 break;
3203 case OP_FTEOWNED:
985213f2 3204 if (PL_statcache.st_uid == PerlProc_geteuid())
8db8f6b6 3205 FT_RETURNYES;
f1cb2d48
NC		 3206 break;
3207 case OP_FTZERO:
3208 if (PL_statcache.st_size == 0)
8db8f6b6 3209 FT_RETURNYES;
f1cb2d48
NC		 3210 break;
3211 case OP_FTSOCK:
3212 if (S_ISSOCK(PL_statcache.st_mode))
8db8f6b6 3213 FT_RETURNYES;
f1cb2d48
NC		 3214 break;
3215 case OP_FTCHR:
3216 if (S_ISCHR(PL_statcache.st_mode))
8db8f6b6 3217 FT_RETURNYES;
f1cb2d48
NC		 3218 break;
3219 case OP_FTBLK:
3220 if (S_ISBLK(PL_statcache.st_mode))
8db8f6b6 3221 FT_RETURNYES;
f1cb2d48
NC		 3222 break;
3223 case OP_FTFILE:
3224 if (S_ISREG(PL_statcache.st_mode))
8db8f6b6 3225 FT_RETURNYES;
f1cb2d48
NC		 3226 break;
3227 case OP_FTDIR:
3228 if (S_ISDIR(PL_statcache.st_mode))
8db8f6b6 3229 FT_RETURNYES;
f1cb2d48
NC		 3230 break;
3231 case OP_FTPIPE:
3232 if (S_ISFIFO(PL_statcache.st_mode))
8db8f6b6 3233 FT_RETURNYES;
f1cb2d48 3234 break;
a0d0e21e 3235#ifdef S_ISUID
17ad201a
NC		 3236 case OP_FTSUID:
3237 if (PL_statcache.st_mode & S_ISUID)
8db8f6b6 3238 FT_RETURNYES;
17ad201a 3239 break;
a0d0e21e 3240#endif
a0d0e21e 3241#ifdef S_ISGID
17ad201a
NC		 3242 case OP_FTSGID:
3243 if (PL_statcache.st_mode & S_ISGID)
8db8f6b6 3244 FT_RETURNYES;
17ad201a
NC		 3245 break;
3246#endif
3247#ifdef S_ISVTX
3248 case OP_FTSVTX:
3249 if (PL_statcache.st_mode & S_ISVTX)
8db8f6b6 3250 FT_RETURNYES;
17ad201a 3251 break;
a0d0e21e 3252#endif
17ad201a 3253 }
8db8f6b6 3254 FT_RETURNNO;
a0d0e21e
LW		 3255}
3256
17ad201a 3257PP(pp_ftlink)
a0d0e21e 3258{
97aff369 3259 dVAR;
500ff13f 3260 I32 result;
07fe7c6a 3261
6f1401dc 3262 tryAMAGICftest_MG('l');
40c852de 3263 result = my_lstat_flags(0);
500ff13f 3264
a0d0e21e 3265 if (result < 0)
8db8f6b6 3266 FT_RETURNUNDEF;
17ad201a 3267 if (S_ISLNK(PL_statcache.st_mode))
8db8f6b6
FC		 3268 FT_RETURNYES;
3269 FT_RETURNNO;
a0d0e21e
LW		 3270}
3271
3272PP(pp_fttty)
3273{
97aff369 3274 dVAR;
a0d0e21e
LW		 3275 int fd;
3276 GV *gv;
0784aae0 3277 char *name = NULL;
40c852de 3278 STRLEN namelen;
fb73857a 3279
6f1401dc 3280 tryAMAGICftest_MG('t');
07fe7c6a 3281
533c011a 3282 if (PL_op->op_flags & OPf_REF)
146174a9 3283 gv = cGVOP_gv;
e5e154d2 3284 else {
d2f67720 3285 SV *tmpsv = *PL_stack_sp;
e5e154d2 3286 if (!(gv = MAYBE_DEREF_GV_nomg(tmpsv))) {
40c852de
DM		 3287 name = SvPV_nomg(tmpsv, namelen);
3288 gv = gv_fetchpvn_flags(name, namelen, SvUTF8(tmpsv), SVt_PVIO);
e5e154d2 3289 }
40c852de 3290 }
fb73857a 3291
a0d0e21e 3292 if (GvIO(gv) && IoIFP(GvIOp(gv)))
760ac839 3293 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
b6cb94c5 3294 else if (name && isDIGIT(*name))
40c852de 3295 fd = atoi(name);
a0d0e21e 3296 else
8db8f6b6 3297 FT_RETURNUNDEF;
6ad3d225 3298 if (PerlLIO_isatty(fd))
8db8f6b6
FC		 3299 FT_RETURNYES;
3300 FT_RETURNNO;
a0d0e21e
LW		 3301}
3302
a0d0e21e
LW		 3303PP(pp_fttext)
3304{
97aff369 3305 dVAR;
a0d0e21e
LW		 3306 I32 i;
3307 I32 len;
3308 I32 odd = 0;
3309 STDCHAR tbuf[512];
eb578fdb
KW		 3310 STDCHAR *s;
3311 IO *io;
3312 SV *sv = NULL;
5f05dabc 3313 GV *gv;
146174a9 3314 PerlIO *fp;
a0d0e21e 3315
6f1401dc 3316 tryAMAGICftest_MG(PL_op->op_type == OP_FTTEXT ? 'T' : 'B');
07fe7c6a 3317
533c011a 3318 if (PL_op->op_flags & OPf_REF)
146174a9 3319 gv = cGVOP_gv;
d2c4d2d1 3320 else if ((PL_op->op_private & (OPpFT_STACKED|OPpFT_AFTER_t))
8db8f6b6 3321 == OPpFT_STACKED)
ba8182f8 3322 gv = PL_defgv;
d2c4d2d1 3323 else {
d2f67720 3324 sv = *PL_stack_sp;
d2c4d2d1 3325 gv = MAYBE_DEREF_GV_nomg(sv);
8db8f6b6 3326 }
5f05dabc 3327
3328 if (gv) {
3280af22
NIS		 3329 if (gv == PL_defgv) {
3330 if (PL_statgv)
bd5f6c01
FC		 3331 io = SvTYPE(PL_statgv) == SVt_PVIO
3332 ? (IO *)PL_statgv
3333 : GvIO(PL_statgv);
a0d0e21e 3334 else {
a0d0e21e
LW		 3335 goto really_filename;
3336 }
3337 }
3338 else {
3280af22 3339 PL_statgv = gv;
76f68e9b 3340 sv_setpvs(PL_statname, "");
3280af22 3341 io = GvIO(PL_statgv);
a0d0e21e 3342 }
eb4c377a 3343 PL_laststatval = -1;
21a64c3e 3344 PL_laststype = OP_STAT;
a0d0e21e 3345 if (io && IoIFP(io)) {
5f05dabc 3346 if (! PerlIO_has_base(IoIFP(io)))
cea2e8a9 3347 DIE(aTHX_ "-T and -B not implemented on filehandles");
3280af22
NIS		 3348 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3349 if (PL_laststatval < 0)
8db8f6b6 3350 FT_RETURNUNDEF;
9cbac4c7 3351 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
533c011a 3352 if (PL_op->op_type == OP_FTTEXT)
8db8f6b6 3353 FT_RETURNNO;
a0d0e21e 3354 else
8db8f6b6 3355 FT_RETURNYES;
9cbac4c7 3356 }
a20bf0c3 3357 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
760ac839 3358 i = PerlIO_getc(IoIFP(io));
a0d0e21e 3359 if (i != EOF)
760ac839 3360 (void)PerlIO_ungetc(IoIFP(io),i);
a0d0e21e 3361 }
a20bf0c3 3362 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
8db8f6b6 3363 FT_RETURNYES;
a20bf0c3
JH		 3364 len = PerlIO_get_bufsiz(IoIFP(io));
3365 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
760ac839
LW		 3366 /* sfio can have large buffers - limit to 512 */
3367 if (len > 512)
3368 len = 512;
a0d0e21e
LW		 3369 }
3370 else {
2ad48547 3371 SETERRNO(EBADF,RMS_IFI);
3f12cff4 3372 report_evil_fh(gv);
93189314 3373 SETERRNO(EBADF,RMS_IFI);
8db8f6b6 3374 FT_RETURNUNDEF;
a0d0e21e
LW		 3375 }
3376 }