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podcheck.t: .core dump files don't contain pod
[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 32#include "time64.h"
a0d0e21e 33
f1066039
JH		 34#ifdef I_SHADOW
35/* Shadow password support for solaris - pdo@cs.umd.edu
36 * Not just Solaris: at least HP-UX, IRIX, Linux.
3813c136
JH		 37 * The API is from SysV.
38 *
39 * There are at least two more shadow interfaces,
40 * see the comments in pp_gpwent().
41 *
42 * --jhi */
43# ifdef __hpux__
c529f79d 44/* There is a MAXINT coming from <shadow.h> <- <hpsecurity.h> <- <values.h>
301e8125 45 * and another MAXINT from "perl.h" <- <sys/param.h>. */
3813c136
JH		 46# undef MAXINT
47# endif
48# include <shadow.h>
8c0bfa08
PB		 49#endif
50
76c32331 51#ifdef I_SYS_RESOURCE
52# include <sys/resource.h>
16d20bd9 53#endif
a0d0e21e 54
2986a63f
JH		 55#ifdef NETWARE
56NETDB_DEFINE_CONTEXT
57#endif
58
a0d0e21e 59#ifdef HAS_SELECT
1e743fda
JH		 60# ifdef I_SYS_SELECT
61# include <sys/select.h>
62# endif
a0d0e21e 63#endif
a0d0e21e 64
dc45a647
MB		 65/* XXX Configure test needed.
66 h_errno might not be a simple 'int', especially for multi-threaded
5ff3f7a4
GS		 67 applications, see "extern int errno in perl.h". Creating such
68 a test requires taking into account the differences between
69 compiling multithreaded and singlethreaded ($ccflags et al).
70 HOST_NOT_FOUND is typically defined in <netdb.h>.
dc45a647 71*/
cb50131a 72#if defined(HOST_NOT_FOUND) && !defined(h_errno) && !defined(__CYGWIN__)
a0d0e21e
LW		 73extern int h_errno;
74#endif
75
76#ifdef HAS_PASSWD
77# ifdef I_PWD
78# include <pwd.h>
79# else
fd8cd3a3 80# if !defined(VMS)
20ce7b12
GS		 81 struct passwd *getpwnam (char *);
82 struct passwd *getpwuid (Uid_t);
fd8cd3a3 83# endif
a0d0e21e 84# endif
28e8609d 85# ifdef HAS_GETPWENT
10bc17b6 86#ifndef getpwent
20ce7b12 87 struct passwd *getpwent (void);
c2a8f790 88#elif defined (VMS) && defined (my_getpwent)
9fa802f3 89 struct passwd *Perl_my_getpwent (pTHX);
10bc17b6 90#endif
28e8609d 91# endif
a0d0e21e
LW		 92#endif
93
94#ifdef HAS_GROUP
95# ifdef I_GRP
96# include <grp.h>
97# else
20ce7b12
GS		 98 struct group *getgrnam (char *);
99 struct group *getgrgid (Gid_t);
a0d0e21e 100# endif
28e8609d 101# ifdef HAS_GETGRENT
10bc17b6 102#ifndef getgrent
20ce7b12 103 struct group *getgrent (void);
10bc17b6 104#endif
28e8609d 105# endif
a0d0e21e
LW		 106#endif
107
108#ifdef I_UTIME
3730b96e 109# if defined(_MSC_VER) || defined(__MINGW32__)
3fe9a6f1 110# include <sys/utime.h>
111# else
112# include <utime.h>
113# endif
a0d0e21e 114#endif
a0d0e21e 115
cbdc8872 116#ifdef HAS_CHSIZE
cd52b7b2 117# ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
118# undef my_chsize
119# endif
72cc7e2a 120# define my_chsize PerlLIO_chsize
27da23d5
JH		 121#else
122# ifdef HAS_TRUNCATE
123# define my_chsize PerlLIO_chsize
124# else
125I32 my_chsize(int fd, Off_t length);
126# endif
cbdc8872 127#endif
128
ff68c719 129#ifdef HAS_FLOCK
130# define FLOCK flock
131#else /* no flock() */
132
36477c24 133 /* fcntl.h might not have been included, even if it exists, because
134 the current Configure only sets I_FCNTL if it's needed to pick up
135 the *_OK constants. Make sure it has been included before testing
136 the fcntl() locking constants. */
137# if defined(HAS_FCNTL) && !defined(I_FCNTL)
138# include <fcntl.h>
139# endif
140
9d9004a9 141# if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
ff68c719 142# define FLOCK fcntl_emulate_flock
143# define FCNTL_EMULATE_FLOCK
144# else /* no flock() or fcntl(F_SETLK,...) */
145# ifdef HAS_LOCKF
146# define FLOCK lockf_emulate_flock
147# define LOCKF_EMULATE_FLOCK
148# endif /* lockf */
149# endif /* no flock() or fcntl(F_SETLK,...) */
150
151# ifdef FLOCK
20ce7b12 152 static int FLOCK (int, int);
ff68c719 153
154 /*
155 * These are the flock() constants. Since this sytems doesn't have
156 * flock(), the values of the constants are probably not available.
157 */
158# ifndef LOCK_SH
159# define LOCK_SH 1
160# endif
161# ifndef LOCK_EX
162# define LOCK_EX 2
163# endif
164# ifndef LOCK_NB
165# define LOCK_NB 4
166# endif
167# ifndef LOCK_UN
168# define LOCK_UN 8
169# endif
170# endif /* emulating flock() */
171
172#endif /* no flock() */
55497cff 173
85ab1d1d 174#define ZBTLEN 10
27da23d5 175static const char zero_but_true[ZBTLEN + 1] = "0 but true";
85ab1d1d 176
5ff3f7a4
GS		 177#if defined(I_SYS_ACCESS) && !defined(R_OK)
178# include <sys/access.h>
179#endif
180
a4af207c
JH		 181#include "reentr.h"
182
9cffb111
OS		 183#ifdef __Lynx__
184/* Missing protos on LynxOS */
185void sethostent(int);
186void endhostent(void);
187void setnetent(int);
188void endnetent(void);
189void setprotoent(int);
190void endprotoent(void);
191void setservent(int);
192void endservent(void);
193#endif
194
40262ff4
AB		 195#ifdef __amigaos4__
196# include "amigaos4/amigaio.h"
197#endif
198
faee0e31 199#undef PERL_EFF_ACCESS /* EFFective uid/gid ACCESS */
5ff3f7a4
GS		 200
201/* F_OK unused: if stat() cannot find it... */
202
d7558cad 203#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
c955f117 204 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
d7558cad 205# define PERL_EFF_ACCESS(p,f) (access((p), (f) | EFF_ONLY_OK))
5ff3f7a4
GS		 206#endif
207
d7558cad 208#if !defined(PERL_EFF_ACCESS) && defined(HAS_EACCESS)
3813c136 209# ifdef I_SYS_SECURITY
5ff3f7a4
GS		 210# include <sys/security.h>
211# endif
c955f117
JH		 212# ifdef ACC_SELF
213 /* HP SecureWare */
d7558cad 214# define PERL_EFF_ACCESS(p,f) (eaccess((p), (f), ACC_SELF))
c955f117
JH		 215# else
216 /* SCO */
d7558cad 217# define PERL_EFF_ACCESS(p,f) (eaccess((p), (f)))
c955f117 218# endif
5ff3f7a4
GS		 219#endif
220
d7558cad 221#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESSX) && defined(ACC_SELF)
c955f117 222 /* AIX */
d7558cad 223# define PERL_EFF_ACCESS(p,f) (accessx((p), (f), ACC_SELF))
5ff3f7a4
GS		 224#endif
225
d7558cad
NC		 226
227#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) \
327c3667
GS		 228 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
229 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
5ff3f7a4 230/* The Hard Way. */
327c3667 231STATIC int
7f4774ae 232S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
ba106d47 233{
c4420975
AL		 234 const Uid_t ruid = getuid();
235 const Uid_t euid = geteuid();
236 const Gid_t rgid = getgid();
237 const Gid_t egid = getegid();
5ff3f7a4
GS		 238 int res;
239
5ff3f7a4 240#if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
cea2e8a9 241 Perl_croak(aTHX_ "switching effective uid is not implemented");
5ff3f7a4
GS		 242#else
243#ifdef HAS_SETREUID
244 if (setreuid(euid, ruid))
245#else
246#ifdef HAS_SETRESUID
247 if (setresuid(euid, ruid, (Uid_t)-1))
248#endif
249#endif
dcbac5bb 250 /* diag_listed_as: entering effective %s failed */
cea2e8a9 251 Perl_croak(aTHX_ "entering effective uid failed");
5ff3f7a4
GS		 252#endif
253
254#if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
cea2e8a9 255 Perl_croak(aTHX_ "switching effective gid is not implemented");
5ff3f7a4
GS		 256#else
257#ifdef HAS_SETREGID
258 if (setregid(egid, rgid))
259#else
260#ifdef HAS_SETRESGID
261 if (setresgid(egid, rgid, (Gid_t)-1))
262#endif
263#endif
dcbac5bb 264 /* diag_listed_as: entering effective %s failed */
cea2e8a9 265 Perl_croak(aTHX_ "entering effective gid failed");
5ff3f7a4
GS		 266#endif
267
268 res = access(path, mode);
269
270#ifdef HAS_SETREUID
271 if (setreuid(ruid, euid))
272#else
273#ifdef HAS_SETRESUID
274 if (setresuid(ruid, euid, (Uid_t)-1))
275#endif
276#endif
dcbac5bb 277 /* diag_listed_as: leaving effective %s failed */
cea2e8a9 278 Perl_croak(aTHX_ "leaving effective uid failed");
5ff3f7a4
GS		 279
280#ifdef HAS_SETREGID
281 if (setregid(rgid, egid))
282#else
283#ifdef HAS_SETRESGID
284 if (setresgid(rgid, egid, (Gid_t)-1))
285#endif
286#endif
dcbac5bb 287 /* diag_listed_as: leaving effective %s failed */
cea2e8a9 288 Perl_croak(aTHX_ "leaving effective gid failed");
5ff3f7a4
GS		 289
290 return res;
291}
d6864606 292# define PERL_EFF_ACCESS(p,f) (S_emulate_eaccess(aTHX_ (p), (f)))
5ff3f7a4
GS		 293#endif
294
a0d0e21e
LW		 295PP(pp_backtick)
296{
20b7effb 297 dSP; dTARGET;
760ac839 298 PerlIO *fp;
1b6737cc 299 const char * const tmps = POPpconstx;
1c23e2bd 300 const U8 gimme = GIMME_V;
e1ec3a88 301 const char *mode = "r";
54310121 302
a0d0e21e 303 TAINT_PROPER("``");
16fe6d59
GS		 304 if (PL_op->op_private & OPpOPEN_IN_RAW)
305 mode = "rb";
306 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
307 mode = "rt";
2fbb330f 308 fp = PerlProc_popen(tmps, mode);
a0d0e21e 309 if (fp) {
11bcd5da 310 const char * const type = Perl_PerlIO_context_layers(aTHX_ NULL);
ac27b0f5
NIS		 311 if (type && *type)
312 PerlIO_apply_layers(aTHX_ fp,mode,type);
313
54310121 314 if (gimme == G_VOID) {
96827780
MB		 315 char tmpbuf[256];
316 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
a79db61d 317 NOOP;
54310121 318 }
319 else if (gimme == G_SCALAR) {
d343c3ef 320 ENTER_with_name("backtick");
75af1a9c 321 SAVESPTR(PL_rs);
fa326138 322 PL_rs = &PL_sv_undef;
60e13354 323 SvPVCLEAR(TARG); /* note that this preserves previous buffer */
bd61b366 324 while (sv_gets(TARG, fp, SvCUR(TARG)) != NULL)
a79db61d 325 NOOP;
d343c3ef 326 LEAVE_with_name("backtick");
a0d0e21e 327 XPUSHs(TARG);
aa689395 328 SvTAINTED_on(TARG);
a0d0e21e
LW		 329 }
330 else {
a0d0e21e 331 for (;;) {
561b68a9 332 SV * const sv = newSV(79);
bd61b366 333 if (sv_gets(sv, fp, 0) == NULL) {
a0d0e21e
LW		 334 SvREFCNT_dec(sv);
335 break;
336 }
6e449a3a 337 mXPUSHs(sv);
a0d0e21e 338 if (SvLEN(sv) - SvCUR(sv) > 20) {
1da4ca5f 339 SvPV_shrink_to_cur(sv);
a0d0e21e 340 }
aa689395 341 SvTAINTED_on(sv);
a0d0e21e
LW		 342 }
343 }
2fbb330f 344 STATUS_NATIVE_CHILD_SET(PerlProc_pclose(fp));
aa689395 345 TAINT; /* "I believe that this is not gratuitous!" */
a0d0e21e
LW		 346 }
347 else {
37038d91 348 STATUS_NATIVE_CHILD_SET(-1);
54310121 349 if (gimme == G_SCALAR)
a0d0e21e
LW		 350 RETPUSHUNDEF;
351 }
352
353 RETURN;
354}
355
356PP(pp_glob)
357{
358 OP *result;
9426e1a5 359 dSP;
9423a867
FC		 360 GV * const gv = (PL_op->op_flags & OPf_SPECIAL) ? NULL : (GV *)POPs;
361
362 PUTBACK;
363
151cea25
FC		 364 /* make a copy of the pattern if it is gmagical, to ensure that magic
365 * is called once and only once */
9423a867 366 if (SvGMAGICAL(TOPs)) TOPs = sv_2mortal(newSVsv(TOPs));
9426e1a5 367
fc99edcf 368 tryAMAGICunTARGETlist(iter_amg, (PL_op->op_flags & OPf_SPECIAL));
d1bea3d8
DM		 369
370 if (PL_op->op_flags & OPf_SPECIAL) {
371 /* call Perl-level glob function instead. Stack args are:
9423a867 372 * MARK, wildcard
d1bea3d8
DM		 373 * and following OPs should be: gv(CORE::GLOBAL::glob), entersub
374 * */
375 return NORMAL;
376 }
d67594ff 377 if (PL_globhook) {
d67594ff
FC		 378 PL_globhook(aTHX);
379 return NORMAL;
380 }
f5284f61 381
71686f12
GS		 382 /* Note that we only ever get here if File::Glob fails to load
383 * without at the same time croaking, for some reason, or if
384 * perl was built with PERL_EXTERNAL_GLOB */
385
d343c3ef 386 ENTER_with_name("glob");
a0d0e21e 387
c90c0ff4 388#ifndef VMS
284167a5 389 if (TAINTING_get) {
7bac28a0 390 /*
391 * The external globbing program may use things we can't control,
392 * so for security reasons we must assume the worst.
393 */
394 TAINT;
22c35a8c 395 taint_proper(PL_no_security, "glob");
7bac28a0 396 }
c90c0ff4 397#endif /* !VMS */
7bac28a0 398
3280af22 399 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
9423a867 400 PL_last_in_gv = gv;
a0d0e21e 401
3280af22 402 SAVESPTR(PL_rs); /* This is not permanent, either. */
84bafc02 403 PL_rs = newSVpvs_flags("\000", SVs_TEMP);
c07a80fd 404#ifndef DOSISH
405#ifndef CSH
6b88bc9c 406 *SvPVX(PL_rs) = '\n';
a0d0e21e 407#endif /* !CSH */
55497cff 408#endif /* !DOSISH */
c07a80fd 409
a0d0e21e 410 result = do_readline();
d343c3ef 411 LEAVE_with_name("glob");
a0d0e21e
LW		 412 return result;
413}
414
a0d0e21e
LW		 415PP(pp_rcatline)
416{
146174a9 417 PL_last_in_gv = cGVOP_gv;
a0d0e21e
LW		 418 return do_readline();
419}
420
421PP(pp_warn)
422{
20b7effb 423 dSP; dMARK;
c5df3096 424 SV *exsv;
06bf62c7 425 STRLEN len;
b59aed67 426 if (SP - MARK > 1) {
a0d0e21e 427 dTARGET;
3280af22 428 do_join(TARG, &PL_sv_no, MARK, SP);
c5df3096 429 exsv = TARG;
a0d0e21e
LW		 430 SP = MARK + 1;
431 }
b59aed67 432 else if (SP == MARK) {
c5df3096 433 exsv = &PL_sv_no;
b59aed67 434 EXTEND(SP, 1);
83f957ec 435 SP = MARK + 1;
b59aed67 436 }
a0d0e21e 437 else {
c5df3096 438 exsv = TOPs;
ef5fe392 439 if (SvGMAGICAL(exsv)) exsv = sv_mortalcopy(exsv);
a0d0e21e 440 }
06bf62c7 441
72d74926 442 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
c5df3096
Z		 443 /* well-formed exception supplied */
444 }
c5df3096 445 else {
eed484f9
DD		 446 SV * const errsv = ERRSV;
447 SvGETMAGIC(errsv);
448 if (SvROK(errsv)) {
449 if (SvGMAGICAL(errsv)) {
ef5fe392 450 exsv = sv_newmortal();
eed484f9 451 sv_setsv_nomg(exsv, errsv);
ef5fe392 452 }
eed484f9 453 else exsv = errsv;
ef5fe392 454 }
eed484f9 455 else if (SvPOKp(errsv) ? SvCUR(errsv) : SvNIOKp(errsv)) {
ef5fe392 456 exsv = sv_newmortal();
eed484f9 457 sv_setsv_nomg(exsv, errsv);
ef5fe392
FC		 458 sv_catpvs(exsv, "\t...caught");
459 }
460 else {
c5df3096 461 exsv = newSVpvs_flags("Warning: something's wrong", SVs_TEMP);
ef5fe392 462 }
c5df3096 463 }
3b7f69a5
FC		 464 if (SvROK(exsv) && !PL_warnhook)
465 Perl_warn(aTHX_ "%"SVf, SVfARG(exsv));
466 else warn_sv(exsv);
a0d0e21e
LW		 467 RETSETYES;
468}
469
470PP(pp_die)
471{
20b7effb 472 dSP; dMARK;
c5df3096 473 SV *exsv;
06bf62c7 474 STRLEN len;
96e176bf 475#ifdef VMS
97124ef6
FC		 476 VMSISH_HUSHED =
477 VMSISH_HUSHED || (PL_curcop->op_private & OPpHUSH_VMSISH);
96e176bf 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 }
eed484f9
DD		 492 else {
493 SV * const errsv = ERRSV;
8b3945e7 494 SvGETMAGIC(errsv);
eed484f9
DD		 495 if (SvROK(errsv)) {
496 exsv = errsv;
497 if (sv_isobject(exsv)) {
498 HV * const stash = SvSTASH(SvRV(exsv));
499 GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
500 if (gv) {
501 SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
502 SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
503 EXTEND(SP, 3);
504 PUSHMARK(SP);
505 PUSHs(exsv);
506 PUSHs(file);
507 PUSHs(line);
508 PUTBACK;
509 call_sv(MUTABLE_SV(GvCV(gv)),
510 G_SCALAR|G_EVAL|G_KEEPERR);
511 exsv = sv_mortalcopy(*PL_stack_sp--);
512 }
05423cc9 513 }
4e6ea2c3 514 }
8b3945e7 515 else if (SvPOK(errsv) && SvCUR(errsv)) {
eed484f9
DD		 516 exsv = sv_mortalcopy(errsv);
517 sv_catpvs(exsv, "\t...propagated");
518 }
519 else {
520 exsv = newSVpvs_flags("Died", SVs_TEMP);
521 }
c5df3096 522 }
81d52ecd 523 die_sv(exsv);
a25b5927 524 NOT_REACHED; /* NOTREACHED */
263fdd5b 525 return NULL; /* avoid missing return from non-void function warning */
a0d0e21e
LW		 526}
527
528/* I/O. */
529
d682515d 530OP *
3e0cb5de 531Perl_tied_method(pTHX_ SV *methname, SV **sp, SV *const sv,
d682515d 532 const MAGIC *const mg, const U32 flags, U32 argc, ...)
6bcca55b 533{
d8ef3a16
DM		 534 SV **orig_sp = sp;
535 I32 ret_args;
052a7c76 536 SSize_t extend_size;
d8ef3a16 537
d682515d 538 PERL_ARGS_ASSERT_TIED_METHOD;
6bcca55b
NC		 539
540 /* Ensure that our flag bits do not overlap. */
6d59e610
LM		 541 STATIC_ASSERT_STMT((TIED_METHOD_MORTALIZE_NOT_NEEDED & G_WANT) == 0);
542 STATIC_ASSERT_STMT((TIED_METHOD_ARGUMENTS_ON_STACK & G_WANT) == 0);
543 STATIC_ASSERT_STMT((TIED_METHOD_SAY & G_WANT) == 0);
6bcca55b 544
d8ef3a16
DM		 545 PUTBACK; /* sp is at *foot* of args, so this pops args from old stack */
546 PUSHSTACKi(PERLSI_MAGIC);
052a7c76 547 /* extend for object + args. If argc might wrap/truncate when cast
e9548aa6
DM		 548 * to SSize_t and incremented, set to -1, which will trigger a panic in
549 * EXTEND().
550 * The weird way this is written is because g++ is dumb enough to
551 * warn "comparison is always false" on something like:
552 *
553 * sizeof(a) >= sizeof(b) && a >= B_t_MAX -1
554 *
555 * (where the LH condition is false)
556 */
052a7c76 557 extend_size =
e9548aa6 558 (argc > (sizeof(argc) >= sizeof(SSize_t) ? SSize_t_MAX - 1 : argc))
052a7c76
DM		 559 ? -1 : (SSize_t)argc + 1;
560 EXTEND(SP, extend_size);
6bcca55b 561 PUSHMARK(sp);
d682515d 562 PUSHs(SvTIED_obj(sv, mg));
d8ef3a16
DM		 563 if (flags & TIED_METHOD_ARGUMENTS_ON_STACK) {
564 Copy(orig_sp + 2, sp + 1, argc, SV*); /* copy args to new stack */
1a8c1d59 565 sp += argc;
d8ef3a16 566 }
1a8c1d59 567 else if (argc) {
d682515d
NC		 568 const U32 mortalize_not_needed
569 = flags & TIED_METHOD_MORTALIZE_NOT_NEEDED;
6bcca55b 570 va_list args;
0d5509eb 571 va_start(args, argc);
6bcca55b
NC		 572 do {
573 SV *const arg = va_arg(args, SV *);
574 if(mortalize_not_needed)
575 PUSHs(arg);
576 else
577 mPUSHs(arg);
578 } while (--argc);
579 va_end(args);
580 }
581
582 PUTBACK;
d682515d 583 ENTER_with_name("call_tied_method");
94bc412f
NC		 584 if (flags & TIED_METHOD_SAY) {
585 /* local $\ = "\n" */
586 SAVEGENERICSV(PL_ors_sv);
587 PL_ors_sv = newSVpvs("\n");
588 }
3e0cb5de 589 ret_args = call_sv(methname, (flags & G_WANT)|G_METHOD_NAMED);
d8ef3a16
DM		 590 SPAGAIN;
591 orig_sp = sp;
592 POPSTACK;
593 SPAGAIN;
594 if (ret_args) { /* copy results back to original stack */
595 EXTEND(sp, ret_args);
596 Copy(orig_sp - ret_args + 1, sp + 1, ret_args, SV*);
597 sp += ret_args;
598 PUTBACK;
599 }
d682515d 600 LEAVE_with_name("call_tied_method");
6bcca55b
NC		 601 return NORMAL;
602}
603
d682515d
NC		 604#define tied_method0(a,b,c,d) \
605 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,0)
606#define tied_method1(a,b,c,d,e) \
607 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,1,e)
608#define tied_method2(a,b,c,d,e,f) \
609 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,2,e,f)
6bcca55b 610
a0d0e21e
LW		 611PP(pp_open)
612{
20b7effb 613 dSP;
a567e93b
NIS		 614 dMARK; dORIGMARK;
615 dTARGET;
a0d0e21e 616 SV *sv;
5b468f54 617 IO *io;
5c144d81 618 const char *tmps;
a0d0e21e 619 STRLEN len;
a567e93b 620 bool ok;
a0d0e21e 621
159b6efe 622 GV * const gv = MUTABLE_GV(*++MARK);
c4420975 623
13be902c 624 if (!isGV(gv) && !(SvTYPE(gv) == SVt_PVLV && isGV_with_GP(gv)))
cea2e8a9 625 DIE(aTHX_ PL_no_usym, "filehandle");
abc718f2 626
a79db61d 627 if ((io = GvIOp(gv))) {
a5e1d062 628 const MAGIC *mg;
36477c24 629 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
853846ea 630
a2a5de95 631 if (IoDIRP(io))
d1d15184 632 Perl_ck_warner_d(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
d0c0e7dd
FC		 633 "Opening dirhandle %"HEKf" also as a file",
634 HEKfARG(GvENAME_HEK(gv)));
abc718f2 635
ad64d0ec 636 mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
c4420975
AL		 637 if (mg) {
638 /* Method's args are same as ours ... */
639 /* ... except handle is replaced by the object */
3e0cb5de 640 return Perl_tied_method(aTHX_ SV_CONST(OPEN), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC		 641 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
642 sp - mark);
c4420975 643 }
4592e6ca
NIS		 644 }
645
a567e93b
NIS		 646 if (MARK < SP) {
647 sv = *++MARK;
648 }
649 else {
35a08ec7 650 sv = GvSVn(gv);
a567e93b
NIS		 651 }
652
5c144d81 653 tmps = SvPV_const(sv, len);
d5eb9a46 654 ok = do_open6(gv, tmps, len, NULL, MARK+1, (SP-MARK));
a567e93b
NIS		 655 SP = ORIGMARK;
656 if (ok)
3280af22
NIS		 657 PUSHi( (I32)PL_forkprocess );
658 else if (PL_forkprocess == 0) /* we are a new child */
a0d0e21e
LW		 659 PUSHi(0);
660 else
661 RETPUSHUNDEF;
662 RETURN;
663}
664
665PP(pp_close)
666{
20b7effb 667 dSP;
30901a8a
FC		 668 GV * const gv =
669 MAXARG == 0 || (!TOPs && !POPs) ? PL_defoutgv : MUTABLE_GV(POPs);
1d603a67 670
2addaaf3
NC		 671 if (MAXARG == 0)
672 EXTEND(SP, 1);
673
a79db61d
AL		 674 if (gv) {
675 IO * const io = GvIO(gv);
676 if (io) {
a5e1d062 677 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 678 if (mg) {
3e0cb5de 679 return tied_method0(SV_CONST(CLOSE), SP, MUTABLE_SV(io), mg);
a79db61d
AL		 680 }
681 }
1d603a67 682 }
54310121 683 PUSHs(boolSV(do_close(gv, TRUE)));
a0d0e21e
LW		 684 RETURN;
685}
686
687PP(pp_pipe_op)
688{
a0d0e21e 689#ifdef HAS_PIPE
9cad6237 690 dSP;
eb578fdb
KW		 691 IO *rstio;
692 IO *wstio;
a0d0e21e
LW		 693 int fd[2];
694
159b6efe
NC		 695 GV * const wgv = MUTABLE_GV(POPs);
696 GV * const rgv = MUTABLE_GV(POPs);
a0d0e21e 697
a0d0e21e 698 rstio = GvIOn(rgv);
a0d0e21e
LW		 699 if (IoIFP(rstio))
700 do_close(rgv, FALSE);
49225470
DD		 701
702 wstio = GvIOn(wgv);
a0d0e21e
LW		 703 if (IoIFP(wstio))
704 do_close(wgv, FALSE);
705
6ad3d225 706 if (PerlProc_pipe(fd) < 0)
a0d0e21e
LW		 707 goto badexit;
708
460c8493
IZ		 709 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
710 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
b5ac89c3 711 IoOFP(rstio) = IoIFP(rstio);
a0d0e21e 712 IoIFP(wstio) = IoOFP(wstio);
50952442
JH		 713 IoTYPE(rstio) = IoTYPE_RDONLY;
714 IoTYPE(wstio) = IoTYPE_WRONLY;
a0d0e21e
LW		 715
716 if (!IoIFP(rstio) || !IoOFP(wstio)) {
a79db61d
AL		 717 if (IoIFP(rstio))
718 PerlIO_close(IoIFP(rstio));
719 else
720 PerlLIO_close(fd[0]);
721 if (IoOFP(wstio))
722 PerlIO_close(IoOFP(wstio));
723 else
724 PerlLIO_close(fd[1]);
a0d0e21e
LW		 725 goto badexit;
726 }
131d45a9 727#if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
375ed12a 728 /* ensure close-on-exec */
131d45a9
JH		 729 if ((fd[0] > PL_maxsysfd && fcntl(fd[0], F_SETFD, FD_CLOEXEC) < 0) ||
730 (fd[1] > PL_maxsysfd && fcntl(fd[1], F_SETFD, FD_CLOEXEC) < 0))
375ed12a 731 goto badexit;
4771b018 732#endif
a0d0e21e
LW		 733 RETPUSHYES;
734
7b52d656 735 badexit:
a0d0e21e
LW		 736 RETPUSHUNDEF;
737#else
cea2e8a9 738 DIE(aTHX_ PL_no_func, "pipe");
a0d0e21e
LW		 739#endif
740}
741
742PP(pp_fileno)
743{
20b7effb 744 dSP; dTARGET;
a0d0e21e
LW		 745 GV *gv;
746 IO *io;
760ac839 747 PerlIO *fp;
a5e1d062 748 const MAGIC *mg;
4592e6ca 749
a0d0e21e
LW		 750 if (MAXARG < 1)
751 RETPUSHUNDEF;
159b6efe 752 gv = MUTABLE_GV(POPs);
9c9f25b8 753 io = GvIO(gv);
4592e6ca 754
9c9f25b8 755 if (io
ad64d0ec 756 && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar)))
5b468f54 757 {
3e0cb5de 758 return tied_method0(SV_CONST(FILENO), SP, MUTABLE_SV(io), mg);
4592e6ca
NIS		 759 }
760
67f2cc75
AC		 761 if (io && IoDIRP(io)) {
762#if defined(HAS_DIRFD) || defined(HAS_DIR_DD_FD)
763 PUSHi(my_dirfd(IoDIRP(io)));
764 RETURN;
765#elif defined(ENOTSUP)
766 errno = ENOTSUP; /* Operation not supported */
767 RETPUSHUNDEF;
768#elif defined(EOPNOTSUPP)
769 errno = EOPNOTSUPP; /* Operation not supported on socket */
770 RETPUSHUNDEF;
771#else
772 errno = EINVAL; /* Invalid argument */
773 RETPUSHUNDEF;
774#endif
775 }
776
9c9f25b8 777 if (!io || !(fp = IoIFP(io))) {
c289d2f7
JH		 778 /* Can't do this because people seem to do things like
779 defined(fileno($foo)) to check whether $foo is a valid fh.
51087808
NC		 780
781 report_evil_fh(gv);
c289d2f7 782 */
a0d0e21e 783 RETPUSHUNDEF;
c289d2f7
JH		 784 }
785
760ac839 786 PUSHi(PerlIO_fileno(fp));
a0d0e21e
LW		 787 RETURN;
788}
789
790PP(pp_umask)
791{
27da23d5 792 dSP;
d7e492a4 793#ifdef HAS_UMASK
27da23d5 794 dTARGET;
761237fe 795 Mode_t anum;
a0d0e21e 796
58536d15 797 if (MAXARG < 1 || (!TOPs && !POPs)) {
b0b546b3
GA		 798 anum = PerlLIO_umask(022);
799 /* setting it to 022 between the two calls to umask avoids
800 * to have a window where the umask is set to 0 -- meaning
801 * that another thread could create world-writeable files. */
802 if (anum != 022)
803 (void)PerlLIO_umask(anum);
a0d0e21e
LW		 804 }
805 else
6ad3d225 806 anum = PerlLIO_umask(POPi);
a0d0e21e
LW		 807 TAINT_PROPER("umask");
808 XPUSHi(anum);
809#else
a0288114 810 /* Only DIE if trying to restrict permissions on "user" (self).
eec2d3df
GS		 811 * Otherwise it's harmless and more useful to just return undef
812 * since 'group' and 'other' concepts probably don't exist here. */
58536d15 813 if (MAXARG >= 1 && (TOPs||POPs) && (POPi & 0700))
cea2e8a9 814 DIE(aTHX_ "umask not implemented");
6b88bc9c 815 XPUSHs(&PL_sv_undef);
a0d0e21e
LW		 816#endif
817 RETURN;
818}
819
820PP(pp_binmode)
821{
20b7effb 822 dSP;
a0d0e21e
LW		 823 GV *gv;
824 IO *io;
760ac839 825 PerlIO *fp;
a0714e2c 826 SV *discp = NULL;
a0d0e21e
LW		 827
828 if (MAXARG < 1)
829 RETPUSHUNDEF;
60382766 830 if (MAXARG > 1) {
16fe6d59 831 discp = POPs;
60382766 832 }
a0d0e21e 833
159b6efe 834 gv = MUTABLE_GV(POPs);
9c9f25b8 835 io = GvIO(gv);
4592e6ca 836
9c9f25b8 837 if (io) {
a5e1d062 838 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 839 if (mg) {
bc0c81ca
NC		 840 /* This takes advantage of the implementation of the varargs
841 function, which I don't think that the optimiser will be able to
842 figure out. Although, as it's a static function, in theory it
843 could. */
3e0cb5de 844 return Perl_tied_method(aTHX_ SV_CONST(BINMODE), SP, MUTABLE_SV(io), mg,
d682515d
NC		 845 G_SCALAR|TIED_METHOD_MORTALIZE_NOT_NEEDED,
846 discp ? 1 : 0, discp);
a79db61d 847 }
4592e6ca 848 }
a0d0e21e 849
9c9f25b8 850 if (!io || !(fp = IoIFP(io))) {
51087808 851 report_evil_fh(gv);
b5fe5ca2 852 SETERRNO(EBADF,RMS_IFI);
50f846a7
SC		 853 RETPUSHUNDEF;
854 }
a0d0e21e 855
40d98b49 856 PUTBACK;
f0a78170 857 {
a79b25b7
VP		 858 STRLEN len = 0;
859 const char *d = NULL;
860 int mode;
861 if (discp)
862 d = SvPV_const(discp, len);
863 mode = mode_from_discipline(d, len);
f0a78170
NC		 864 if (PerlIO_binmode(aTHX_ fp, IoTYPE(io), mode, d)) {
865 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
866 if (!PerlIO_binmode(aTHX_ IoOFP(io), IoTYPE(io), mode, d)) {
867 SPAGAIN;
868 RETPUSHUNDEF;
869 }
870 }
871 SPAGAIN;
872 RETPUSHYES;
873 }
874 else {
875 SPAGAIN;
876 RETPUSHUNDEF;
38af81ff 877 }
40d98b49 878 }
a0d0e21e
LW		 879}
880
881PP(pp_tie)
882{
20b7effb 883 dSP; dMARK;
a0d0e21e 884 HV* stash;
07822e36 885 GV *gv = NULL;
a0d0e21e 886 SV *sv;
1df70142 887 const I32 markoff = MARK - PL_stack_base;
e1ec3a88 888 const char *methname;
14befaf4 889 int how = PERL_MAGIC_tied;
e336de0d 890 U32 items;
c4420975 891 SV *varsv = *++MARK;
a0d0e21e 892
6b05c17a
NIS		 893 switch(SvTYPE(varsv)) {
894 case SVt_PVHV:
aec0c0cc
FC		 895 {
896 HE *entry;
6b05c17a 897 methname = "TIEHASH";
aec0c0cc
FC		 898 if (HvLAZYDEL(varsv) && (entry = HvEITER((HV *)varsv))) {
899 HvLAZYDEL_off(varsv);
900 hv_free_ent((HV *)varsv, entry);
901 }
85fbaab2 902 HvEITER_set(MUTABLE_HV(varsv), 0);
6b05c17a 903 break;
aec0c0cc 904 }
6b05c17a
NIS		 905 case SVt_PVAV:
906 methname = "TIEARRAY";
ce65bc73
FC		 907 if (!AvREAL(varsv)) {
908 if (!AvREIFY(varsv))
909 Perl_croak(aTHX_ "Cannot tie unreifiable array");
910 av_clear((AV *)varsv);
911 AvREIFY_off(varsv);
912 AvREAL_on(varsv);
913 }
6b05c17a
NIS		 914 break;
915 case SVt_PVGV:
13be902c 916 case SVt_PVLV:
8bb5f786 917 if (isGV_with_GP(varsv) && !SvFAKE(varsv)) {
6e592b3a
BM		 918 methname = "TIEHANDLE";
919 how = PERL_MAGIC_tiedscalar;
920 /* For tied filehandles, we apply tiedscalar magic to the IO
921 slot of the GP rather than the GV itself. AMS 20010812 */
922 if (!GvIOp(varsv))
923 GvIOp(varsv) = newIO();
ad64d0ec 924 varsv = MUTABLE_SV(GvIOp(varsv));
6e592b3a
BM		 925 break;
926 }
13733cde
FC		 927 if (SvTYPE(varsv) == SVt_PVLV && LvTYPE(varsv) == 'y') {
928 vivify_defelem(varsv);
929 varsv = LvTARG(varsv);
930 }
924ba076 931 /* FALLTHROUGH */
6b05c17a
NIS		 932 default:
933 methname = "TIESCALAR";
14befaf4 934 how = PERL_MAGIC_tiedscalar;
6b05c17a
NIS		 935 break;
936 }
e336de0d 937 items = SP - MARK++;
a91d1d42 938 if (sv_isobject(*MARK)) { /* Calls GET magic. */
d343c3ef 939 ENTER_with_name("call_TIE");
e788e7d3 940 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 941 PUSHMARK(SP);
eb160463 942 EXTEND(SP,(I32)items);
e336de0d
GS		 943 while (items--)
944 PUSHs(*MARK++);
945 PUTBACK;
864dbfa3 946 call_method(methname, G_SCALAR);
301e8125 947 }
6b05c17a 948 else {
086d2913
NC		 949 /* Can't use call_method here, else this: fileno FOO; tie @a, "FOO"
950 * will attempt to invoke IO::File::TIEARRAY, with (best case) the
951 * wrong error message, and worse case, supreme action at a distance.
952 * (Sorry obfuscation writers. You're not going to be given this one.)
6b05c17a 953 */
4886938f
BF		 954 stash = gv_stashsv(*MARK, 0);
955 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
35c1215d 956 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
a91d1d42 957 methname, SVfARG(SvOK(*MARK) ? *MARK : &PL_sv_no));
6b05c17a 958 }
d343c3ef 959 ENTER_with_name("call_TIE");
e788e7d3 960 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 961 PUSHMARK(SP);
eb160463 962 EXTEND(SP,(I32)items);
e336de0d
GS		 963 while (items--)
964 PUSHs(*MARK++);
965 PUTBACK;
ad64d0ec 966 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
6b05c17a 967 }
a0d0e21e
LW		 968 SPAGAIN;
969
970 sv = TOPs;
d3acc0f7 971 POPSTACK;
a0d0e21e 972 if (sv_isobject(sv)) {
33c27489 973 sv_unmagic(varsv, how);
ae21d580 974 /* Croak if a self-tie on an aggregate is attempted. */
b881518d 975 if (varsv == SvRV(sv) &&
d87ebaca
YST		 976 (SvTYPE(varsv) == SVt_PVAV ||
977 SvTYPE(varsv) == SVt_PVHV))
ae21d580
JH		 978 Perl_croak(aTHX_
979 "Self-ties of arrays and hashes are not supported");
a0714e2c 980 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
a0d0e21e 981 }
d343c3ef 982 LEAVE_with_name("call_TIE");
3280af22 983 SP = PL_stack_base + markoff;
a0d0e21e
LW		 984 PUSHs(sv);
985 RETURN;
986}
987
b1c05ba5
DM		 988
989/* also used for: pp_dbmclose() */
990
a0d0e21e
LW		 991PP(pp_untie)
992{
20b7effb 993 dSP;
5b468f54 994 MAGIC *mg;
33c27489 995 SV *sv = POPs;
1df70142 996 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 997 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
55497cff 998
ca0d4ed9 999 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
5b468f54
AMS		 1000 RETPUSHYES;
1001
13733cde
FC		 1002 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y' &&
1003 !(sv = defelem_target(sv, NULL))) RETPUSHUNDEF;
1004
65eba18f 1005 if ((mg = SvTIED_mg(sv, how))) {
1b6737cc 1006 SV * const obj = SvRV(SvTIED_obj(sv, mg));
fa2b88e0 1007 if (obj) {
c4420975 1008 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
0bd48802 1009 CV *cv;
c4420975 1010 if (gv && isGV(gv) && (cv = GvCV(gv))) {
fa2b88e0 1011 PUSHMARK(SP);
c33ef3ac 1012 PUSHs(SvTIED_obj(MUTABLE_SV(gv), mg));
6e449a3a 1013 mXPUSHi(SvREFCNT(obj) - 1);
fa2b88e0 1014 PUTBACK;
d343c3ef 1015 ENTER_with_name("call_UNTIE");
ad64d0ec 1016 call_sv(MUTABLE_SV(cv), G_VOID);
d343c3ef 1017 LEAVE_with_name("call_UNTIE");
fa2b88e0
JS		 1018 SPAGAIN;
1019 }
a2a5de95
NC		 1020 else if (mg && SvREFCNT(obj) > 1) {
1021 Perl_ck_warner(aTHX_ packWARN(WARN_UNTIE),
1022 "untie attempted while %"UVuf" inner references still exist",
1023 (UV)SvREFCNT(obj) - 1 ) ;
c4420975 1024 }
cbdc8872 1025 }
1026 }
38193a09 1027 sv_unmagic(sv, how) ;
55497cff 1028 RETPUSHYES;
a0d0e21e
LW		 1029}
1030
c07a80fd 1031PP(pp_tied)
1032{
39644a26 1033 dSP;
1b6737cc 1034 const MAGIC *mg;
b3cf4821 1035 dTOPss;
1df70142 1036 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 1037 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
5b468f54 1038
4be76e1f 1039 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
b3cf4821 1040 goto ret_undef;
c07a80fd 1041
13733cde 1042 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y' &&
b3cf4821 1043 !(sv = defelem_target(sv, NULL))) goto ret_undef;
13733cde 1044
155aba94 1045 if ((mg = SvTIED_mg(sv, how))) {
b3cf4821
DD		 1046 SETs(SvTIED_obj(sv, mg));
1047 return NORMAL; /* PUTBACK not needed, pp_tied never moves SP */
c07a80fd 1048 }
b3cf4821
DD		 1049 ret_undef:
1050 SETs(&PL_sv_undef);
1051 return NORMAL;
c07a80fd 1052}
1053
a0d0e21e
LW		 1054PP(pp_dbmopen)
1055{
20b7effb 1056 dSP;
a0d0e21e
LW		 1057 dPOPPOPssrl;
1058 HV* stash;
07822e36 1059 GV *gv = NULL;
a0d0e21e 1060
85fbaab2 1061 HV * const hv = MUTABLE_HV(POPs);
84bafc02 1062 SV * const sv = newSVpvs_flags("AnyDBM_File", SVs_TEMP);
da51bb9b 1063 stash = gv_stashsv(sv, 0);
8ebc5c01 1064 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
a0d0e21e 1065 PUTBACK;
864dbfa3 1066 require_pv("AnyDBM_File.pm");
a0d0e21e 1067 SPAGAIN;
eff494dd 1068 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH")))
cea2e8a9 1069 DIE(aTHX_ "No dbm on this machine");
a0d0e21e
LW		 1070 }
1071
57d3b86d 1072 ENTER;
924508f0 1073 PUSHMARK(SP);
6b05c17a 1074
924508f0 1075 EXTEND(SP, 5);
a0d0e21e
LW		 1076 PUSHs(sv);
1077 PUSHs(left);
1078 if (SvIV(right))
6e449a3a 1079 mPUSHu(O_RDWR|O_CREAT);
a0d0e21e 1080 else
480e0d3c 1081 {
6e449a3a 1082 mPUSHu(O_RDWR);
480e0d3c
FC		 1083 if (!SvOK(right)) right = &PL_sv_no;
1084 }
a0d0e21e 1085 PUSHs(right);
57d3b86d 1086 PUTBACK;
ad64d0ec 1087 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
a0d0e21e
LW		 1088 SPAGAIN;
1089
1090 if (!sv_isobject(TOPs)) {
924508f0
GS		 1091 SP--;
1092 PUSHMARK(SP);
a0d0e21e
LW		 1093 PUSHs(sv);
1094 PUSHs(left);
6e449a3a 1095 mPUSHu(O_RDONLY);
a0d0e21e 1096 PUSHs(right);
a0d0e21e 1097 PUTBACK;
ad64d0ec 1098 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
a0d0e21e 1099 SPAGAIN;
4b523e79
DD		 1100 if (sv_isobject(TOPs))
1101 goto retie;
a0d0e21e 1102 }
4b523e79
DD		 1103 else {
1104 retie:
ad64d0ec
NC		 1105 sv_unmagic(MUTABLE_SV(hv), PERL_MAGIC_tied);
1106 sv_magic(MUTABLE_SV(hv), TOPs, PERL_MAGIC_tied, NULL, 0);
6b05c17a 1107 }
a0d0e21e
LW		 1108 LEAVE;
1109 RETURN;
1110}
1111
a0d0e21e
LW		 1112PP(pp_sselect)
1113{
a0d0e21e 1114#ifdef HAS_SELECT
20b7effb 1115 dSP; dTARGET;
eb578fdb
KW		 1116 I32 i;
1117 I32 j;
1118 char *s;
1119 SV *sv;
65202027 1120 NV value;
a0d0e21e
LW		 1121 I32 maxlen = 0;
1122 I32 nfound;
1123 struct timeval timebuf;
1124 struct timeval *tbuf = &timebuf;
1125 I32 growsize;
1126 char *fd_sets[4];
1127#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1128 I32 masksize;
1129 I32 offset;
1130 I32 k;
1131
1132# if BYTEORDER & 0xf0000
1133# define ORDERBYTE (0x88888888 - BYTEORDER)
1134# else
1135# define ORDERBYTE (0x4444 - BYTEORDER)
1136# endif
1137
1138#endif
1139
1140 SP -= 4;
1141 for (i = 1; i <= 3; i++) {
c4420975 1142 SV * const sv = SP[i];
9d6d5a79 1143 SvGETMAGIC(sv);
15547071
GA		 1144 if (!SvOK(sv))
1145 continue;
ba3062ae
FC		 1146 if (SvREADONLY(sv)) {
1147 if (!(SvPOK(sv) && SvCUR(sv) == 0))
cb077ed2 1148 Perl_croak_no_modify();
ba3062ae
FC		 1149 }
1150 else if (SvIsCOW(sv)) sv_force_normal_flags(sv, 0);
4ef2275c 1151 if (!SvPOK(sv)) {
9d6d5a79
FC		 1152 if (!SvPOKp(sv))
1153 Perl_ck_warner(aTHX_ packWARN(WARN_MISC),
1154 "Non-string passed as bitmask");
1155 SvPV_force_nomg_nolen(sv); /* force string conversion */
4ef2275c 1156 }
729c079f 1157 j = SvCUR(sv);
a0d0e21e
LW		 1158 if (maxlen < j)
1159 maxlen = j;
1160 }
1161
5ff3f7a4 1162/* little endians can use vecs directly */
e366b469 1163#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
5ff3f7a4 1164# ifdef NFDBITS
a0d0e21e 1165
5ff3f7a4
GS		 1166# ifndef NBBY
1167# define NBBY 8
1168# endif
a0d0e21e
LW		 1169
1170 masksize = NFDBITS / NBBY;
5ff3f7a4 1171# else
a0d0e21e 1172 masksize = sizeof(long); /* documented int, everyone seems to use long */
5ff3f7a4 1173# endif
a0d0e21e
LW		 1174 Zero(&fd_sets[0], 4, char*);
1175#endif
1176
ad517f75
MHM		 1177# if SELECT_MIN_BITS == 1
1178 growsize = sizeof(fd_set);
1179# else
1180# if defined(__GLIBC__) && defined(__FD_SETSIZE)
1181# undef SELECT_MIN_BITS
1182# define SELECT_MIN_BITS __FD_SETSIZE
1183# endif
e366b469
PG		 1184 /* If SELECT_MIN_BITS is greater than one we most probably will want
1185 * to align the sizes with SELECT_MIN_BITS/8 because for example
1186 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
f05550c0 1187 * UNIX, Solaris, Darwin) the smallest quantum select() operates
e366b469
PG		 1188 * on (sets/tests/clears bits) is 32 bits. */
1189 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
e366b469
PG		 1190# endif
1191
a0d0e21e 1192 sv = SP[4];
90eaaf02 1193 SvGETMAGIC(sv);
a0d0e21e 1194 if (SvOK(sv)) {
90eaaf02 1195 value = SvNV_nomg(sv);
a0d0e21e
LW		 1196 if (value < 0.0)
1197 value = 0.0;
1198 timebuf.tv_sec = (long)value;
65202027 1199 value -= (NV)timebuf.tv_sec;
a0d0e21e
LW		 1200 timebuf.tv_usec = (long)(value * 1000000.0);
1201 }
1202 else
4608196e 1203 tbuf = NULL;
a0d0e21e
LW		 1204
1205 for (i = 1; i <= 3; i++) {
1206 sv = SP[i];
15547071 1207 if (!SvOK(sv) || SvCUR(sv) == 0) {
a0d0e21e
LW		 1208 fd_sets[i] = 0;
1209 continue;
1210 }
4ef2275c 1211 assert(SvPOK(sv));
a0d0e21e
LW		 1212 j = SvLEN(sv);
1213 if (j < growsize) {
1214 Sv_Grow(sv, growsize);
a0d0e21e 1215 }
c07a80fd 1216 j = SvCUR(sv);
1217 s = SvPVX(sv) + j;
1218 while (++j <= growsize) {
1219 *s++ = '\0';
1220 }
1221
a0d0e21e
LW		 1222#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1223 s = SvPVX(sv);
a02a5408 1224 Newx(fd_sets[i], growsize, char);
a0d0e21e
LW		 1225 for (offset = 0; offset < growsize; offset += masksize) {
1226 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1227 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1228 }
1229#else
1230 fd_sets[i] = SvPVX(sv);
1231#endif
1232 }
1233
dc4c69d9
JH		 1234#ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1235 /* Can't make just the (void*) conditional because that would be
1236 * cpp #if within cpp macro, and not all compilers like that. */
1237 nfound = PerlSock_select(
1238 maxlen * 8,
1239 (Select_fd_set_t) fd_sets[1],
1240 (Select_fd_set_t) fd_sets[2],
1241 (Select_fd_set_t) fd_sets[3],
1242 (void*) tbuf); /* Workaround for compiler bug. */
1243#else
6ad3d225 1244 nfound = PerlSock_select(
a0d0e21e
LW		 1245 maxlen * 8,
1246 (Select_fd_set_t) fd_sets[1],
1247 (Select_fd_set_t) fd_sets[2],
1248 (Select_fd_set_t) fd_sets[3],
1249 tbuf);
dc4c69d9 1250#endif
a0d0e21e
LW		 1251 for (i = 1; i <= 3; i++) {
1252 if (fd_sets[i]) {
1253 sv = SP[i];
1254#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1255 s = SvPVX(sv);
1256 for (offset = 0; offset < growsize; offset += masksize) {
1257 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1258 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1259 }
1260 Safefree(fd_sets[i]);
1261#endif
1262 SvSETMAGIC(sv);
1263 }
1264 }
1265
4189264e 1266 PUSHi(nfound);
82334630 1267 if (GIMME_V == G_ARRAY && tbuf) {
65202027
DS		 1268 value = (NV)(timebuf.tv_sec) +
1269 (NV)(timebuf.tv_usec) / 1000000.0;
6e449a3a 1270 mPUSHn(value);
a0d0e21e
LW		 1271 }
1272 RETURN;
1273#else
cea2e8a9 1274 DIE(aTHX_ "select not implemented");
a0d0e21e
LW		 1275#endif
1276}
1277
8226a3d7 1278/*
dcccc8ff
KW		 1279
1280=head1 GV Functions
1281
8226a3d7
NC		 1282=for apidoc setdefout
1283
796b6530
KW		 1284Sets C<PL_defoutgv>, the default file handle for output, to the passed in
1285typeglob. As C<PL_defoutgv> "owns" a reference on its typeglob, the reference
8226a3d7 1286count of the passed in typeglob is increased by one, and the reference count
796b6530 1287of the typeglob that C<PL_defoutgv> points to is decreased by one.
8226a3d7
NC		 1288
1289=cut
1290*/
1291
4633a7c4 1292void
864dbfa3 1293Perl_setdefout(pTHX_ GV *gv)
4633a7c4 1294{
656457d0
DM		 1295 GV *oldgv = PL_defoutgv;
1296
9a9bb270 1297 PERL_ARGS_ASSERT_SETDEFOUT;
656457d0 1298
9a9bb270 1299 SvREFCNT_inc_simple_void_NN(gv);
3280af22 1300 PL_defoutgv = gv;
656457d0 1301 SvREFCNT_dec(oldgv);
4633a7c4
LW		 1302}
1303
a0d0e21e
LW		 1304PP(pp_select)
1305{
20b7effb 1306 dSP; dTARGET;
4633a7c4 1307 HV *hv;
159b6efe 1308 GV * const newdefout = (PL_op->op_private > 0) ? (MUTABLE_GV(POPs)) : NULL;
099be4f1 1309 GV * egv = GvEGVx(PL_defoutgv);
0df2568b 1310 GV * const *gvp;
4633a7c4 1311
4633a7c4 1312 if (!egv)
3280af22 1313 egv = PL_defoutgv;
099be4f1 1314 hv = isGV_with_GP(egv) ? GvSTASH(egv) : NULL;
0df2568b 1315 gvp = hv && HvENAME(hv)
204263bc
FC		 1316 ? (GV**)hv_fetch(hv, GvNAME(egv), HEK_UTF8(GvNAME_HEK(egv)) ? -GvNAMELEN(egv) : GvNAMELEN(egv), FALSE)
1317 : NULL;
0df2568b 1318 if (gvp && *gvp == egv) {
bd61b366 1319 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
f86702cc 1320 XPUSHTARG;
0df2568b
FC		 1321 }
1322 else {
ad64d0ec 1323 mXPUSHs(newRV(MUTABLE_SV(egv)));
4633a7c4
LW		 1324 }
1325
1326 if (newdefout) {
ded8aa31
GS		 1327 if (!GvIO(newdefout))
1328 gv_IOadd(newdefout);
4633a7c4
LW		 1329 setdefout(newdefout);
1330 }
1331
a0d0e21e
LW		 1332 RETURN;
1333}
1334
1335PP(pp_getc)
1336{
20b7effb 1337 dSP; dTARGET;
30901a8a
FC		 1338 GV * const gv =
1339 MAXARG==0 || (!TOPs && !POPs) ? PL_stdingv : MUTABLE_GV(POPs);
9c9f25b8 1340 IO *const io = GvIO(gv);
2ae324a7 1341
ac3697cd
NC		 1342 if (MAXARG == 0)
1343 EXTEND(SP, 1);
1344
9c9f25b8 1345 if (io) {
a5e1d062 1346 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1347 if (mg) {
1c23e2bd 1348 const U8 gimme = GIMME_V;
3e0cb5de 1349 Perl_tied_method(aTHX_ SV_CONST(GETC), SP, MUTABLE_SV(io), mg, gimme, 0);
0240605e
NC		 1350 if (gimme == G_SCALAR) {
1351 SPAGAIN;
a79db61d 1352 SvSetMagicSV_nosteal(TARG, TOPs);
0240605e
NC		 1353 }
1354 return NORMAL;
a79db61d 1355 }
2ae324a7 1356 }
90133b69 1357 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
51087808 1358 if (!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
831e4cc3 1359 report_evil_fh(gv);
b5fe5ca2 1360 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1361 RETPUSHUNDEF;
90133b69 1362 }
bbce6d69 1363 TAINT;
76f68e9b 1364 sv_setpvs(TARG, " ");
9bc64814 1365 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
7d59b7e4
NIS		 1366 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1367 /* Find out how many bytes the char needs */
aa07b2f6 1368 Size_t len = UTF8SKIP(SvPVX_const(TARG));
7d59b7e4
NIS		 1369 if (len > 1) {
1370 SvGROW(TARG,len+1);
1371 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1372 SvCUR_set(TARG,1+len);
1373 }
1374 SvUTF8_on(TARG);
1375 }
88c34251 1376 else SvUTF8_off(TARG);
a0d0e21e
LW		 1377 PUSHTARG;
1378 RETURN;
1379}
1380
76e3520e 1381STATIC OP *
cea2e8a9 1382S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
a0d0e21e 1383{
eb578fdb 1384 PERL_CONTEXT *cx;
1c23e2bd 1385 const U8 gimme = GIMME_V;
a0d0e21e 1386
7918f24d
NC		 1387 PERL_ARGS_ASSERT_DOFORM;
1388
535e48ea 1389 if (CvCLONE(cv))
7b190374
NC		 1390 cv = MUTABLE_CV(sv_2mortal(MUTABLE_SV(cv_clone(cv))));
1391
ed8ff0f3 1392 cx = cx_pushblock(CXt_FORMAT, gimme, PL_stack_sp, PL_savestack_ix);
6a7d52cc 1393 cx_pushformat(cx, cv, retop, gv);
d2af2719 1394 if (CvDEPTH(cv) >= 2)
f32c7e86 1395 pad_push(CvPADLIST(cv), CvDEPTH(cv));
f32c7e86 1396 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), CvDEPTH(cv));
a0d0e21e 1397
4633a7c4 1398 setdefout(gv); /* locally select filehandle so $% et al work */
a0d0e21e
LW		 1399 return CvSTART(cv);
1400}
1401
1402PP(pp_enterwrite)
1403{
39644a26 1404 dSP;
eb578fdb
KW		 1405 GV *gv;
1406 IO *io;
a0d0e21e 1407 GV *fgv;
07822e36
JH		 1408 CV *cv = NULL;
1409 SV *tmpsv = NULL;
a0d0e21e 1410
2addaaf3 1411 if (MAXARG == 0) {
2addaaf3 1412 EXTEND(SP, 1);
49225470 1413 gv = PL_defoutgv;
2addaaf3 1414 }
a0d0e21e 1415 else {
159b6efe 1416 gv = MUTABLE_GV(POPs);
a0d0e21e 1417 if (!gv)
3280af22 1418 gv = PL_defoutgv;
a0d0e21e 1419 }
a0d0e21e
LW		 1420 io = GvIO(gv);
1421 if (!io) {
1422 RETPUSHNO;
1423 }
1424 if (IoFMT_GV(io))
1425 fgv = IoFMT_GV(io);
1426 else
1427 fgv = gv;
1428
2d1ebc9b 1429 assert(fgv);
a79db61d 1430
a0d0e21e 1431 cv = GvFORM(fgv);
a0d0e21e 1432 if (!cv) {
10edeb5d 1433 tmpsv = sv_newmortal();
f4a7049d 1434 gv_efullname4(tmpsv, fgv, NULL, FALSE);
2d1ebc9b 1435 DIE(aTHX_ "Undefined format \"%"SVf"\" called", SVfARG(tmpsv));
a0d0e21e 1436 }
44a8e56a 1437 IoFLAGS(io) &= ~IOf_DIDTOP;
8e4ecf23 1438 RETURNOP(doform(cv,gv,PL_op->op_next));
a0d0e21e
LW		 1439}
1440
1441PP(pp_leavewrite)
1442{
20b7effb 1443 dSP;
4ebe6e95 1444 GV * const gv = CX_CUR()->blk_format.gv;
eb578fdb 1445 IO * const io = GvIOp(gv);
8b8cacda 1446 PerlIO *ofp;
760ac839 1447 PerlIO *fp;
eb578fdb 1448 PERL_CONTEXT *cx;
8f89e5a9 1449 OP *retop;
617a4f41 1450 bool is_return = cBOOL(PL_op->op_type == OP_RETURN);
a0d0e21e 1451
617a4f41 1452 if (is_return || !io || !(ofp = IoOFP(io)))
8b8cacda
B		 1453 goto forget_top;
1454
760ac839 1455 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1456 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
8b8cacda 1457
3280af22
NIS		 1458 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1459 PL_formtarget != PL_toptarget)
a0d0e21e 1460 {
4633a7c4
LW		 1461 GV *fgv;
1462 CV *cv;
a0d0e21e
LW		 1463 if (!IoTOP_GV(io)) {
1464 GV *topgv;
a0d0e21e
LW		 1465
1466 if (!IoTOP_NAME(io)) {
1b6737cc 1467 SV *topname;
a0d0e21e
LW		 1468 if (!IoFMT_NAME(io))
1469 IoFMT_NAME(io) = savepv(GvNAME(gv));
d0c0e7dd
FC		 1470 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%"HEKf"_TOP",
1471 HEKfARG(GvNAME_HEK(gv))));
f776e3cd 1472 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
748a9306 1473 if ((topgv && GvFORM(topgv)) ||
fafc274c 1474 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
2e0de35c 1475 IoTOP_NAME(io) = savesvpv(topname);
a0d0e21e 1476 else
89529cee 1477 IoTOP_NAME(io) = savepvs("top");
a0d0e21e 1478 }
f776e3cd 1479 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
a0d0e21e 1480 if (!topgv || !GvFORM(topgv)) {
b929a54b 1481 IoLINES_LEFT(io) = IoPAGE_LEN(io);
a0d0e21e
LW		 1482 goto forget_top;
1483 }
1484 IoTOP_GV(io) = topgv;
1485 }
748a9306
LW		 1486 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1487 I32 lines = IoLINES_LEFT(io);
504618e9 1488 const char *s = SvPVX_const(PL_formtarget);
8e07c86e
AD		 1489 if (lines <= 0) /* Yow, header didn't even fit!!! */
1490 goto forget_top;
748a9306
LW		 1491 while (lines-- > 0) {
1492 s = strchr(s, '\n');
1493 if (!s)
1494 break;
1495 s++;
1496 }
1497 if (s) {
f54cb97a 1498 const STRLEN save = SvCUR(PL_formtarget);
aa07b2f6 1499 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
d75029d0
NIS		 1500 do_print(PL_formtarget, ofp);
1501 SvCUR_set(PL_formtarget, save);
3280af22
NIS		 1502 sv_chop(PL_formtarget, s);
1503 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW		 1504 }
1505 }
a0d0e21e 1506 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
f6dfc736 1507 do_print(GvSV(gv_fetchpvs("\f", GV_ADD, SVt_PV)), ofp);
a0d0e21e
LW		 1508 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1509 IoPAGE(io)++;
3280af22 1510 PL_formtarget = PL_toptarget;
748a9306 1511 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4 1512 fgv = IoTOP_GV(io);
636013b3 1513 assert(fgv); /* IoTOP_GV(io) should have been set above */
4633a7c4 1514 cv = GvFORM(fgv);
1df70142
AL		 1515 if (!cv) {
1516 SV * const sv = sv_newmortal();
bd61b366 1517 gv_efullname4(sv, fgv, NULL, FALSE);
44b7e78a 1518 DIE(aTHX_ "Undefined top format \"%"SVf"\" called", SVfARG(sv));
4633a7c4 1519 }
43cd5cb7 1520 return doform(cv, gv, PL_op);
a0d0e21e
LW		 1521 }
1522
1523 forget_top:
4ebe6e95 1524 cx = CX_CUR();
4df352a8
DM		 1525 assert(CxTYPE(cx) == CXt_FORMAT);
1526 SP = PL_stack_base + cx->blk_oldsp; /* ignore retval of formline */
2f450c1b 1527 CX_LEAVE_SCOPE(cx);
6a7d52cc 1528 cx_popformat(cx);
ed8ff0f3 1529 cx_popblock(cx);
8f89e5a9 1530 retop = cx->blk_sub.retop;
5da525e9 1531 CX_POP(cx);
a0d0e21e 1532
617a4f41
DM		 1533 if (is_return)
1534 /* XXX the semantics of doing 'return' in a format aren't documented.
1535 * Currently we ignore any args to 'return' and just return
1536 * a single undef in both scalar and list contexts
1537 */
1538 PUSHs(&PL_sv_undef);
1539 else if (!io || !(fp = IoOFP(io))) {
c782dc1d 1540 if (io && IoIFP(io))
7716c5c5 1541 report_wrongway_fh(gv, '<');
c521cf7c 1542 else
7716c5c5 1543 report_evil_fh(gv);
3280af22 1544 PUSHs(&PL_sv_no);
a0d0e21e
LW		 1545 }
1546 else {
3280af22 1547 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
a2a5de95 1548 Perl_ck_warner(aTHX_ packWARN(WARN_IO), "page overflow");
a0d0e21e 1549 }
d75029d0 1550 if (!do_print(PL_formtarget, fp))
3280af22 1551 PUSHs(&PL_sv_no);
a0d0e21e 1552 else {
3280af22
NIS		 1553 FmLINES(PL_formtarget) = 0;
1554 SvCUR_set(PL_formtarget, 0);
1555 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1556 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1557 (void)PerlIO_flush(fp);
3280af22 1558 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1559 }
1560 }
3280af22 1561 PL_formtarget = PL_bodytarget;
8e4ecf23 1562 RETURNOP(retop);
a0d0e21e
LW		 1563}
1564
1565PP(pp_prtf)
1566{
20b7effb 1567 dSP; dMARK; dORIGMARK;
760ac839 1568 PerlIO *fp;
a0d0e21e 1569
159b6efe
NC		 1570 GV * const gv
1571 = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv;
9c9f25b8 1572 IO *const io = GvIO(gv);
46fc3d4c 1573
87385d72
FC		 1574 /* Treat empty list as "" */
1575 if (MARK == SP) XPUSHs(&PL_sv_no);
1576
9c9f25b8 1577 if (io) {
a5e1d062 1578 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d
AL		 1579 if (mg) {
1580 if (MARK == ORIGMARK) {
1581 MEXTEND(SP, 1);
1582 ++MARK;
1583 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1584 ++SP;
1585 }
3e0cb5de 1586 return Perl_tied_method(aTHX_ SV_CONST(PRINTF), mark - 1, MUTABLE_SV(io),
d682515d
NC		 1587 mg,
1588 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1589 sp - mark);
a79db61d 1590 }
46fc3d4c 1591 }
1592
9c9f25b8 1593 if (!io) {
51087808 1594 report_evil_fh(gv);
93189314 1595 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW		 1596 goto just_say_no;
1597 }
1598 else if (!(fp = IoOFP(io))) {
7716c5c5
NC		 1599 if (IoIFP(io))
1600 report_wrongway_fh(gv, '<');
1601 else if (ckWARN(WARN_CLOSED))
1602 report_evil_fh(gv);
93189314 1603 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
a0d0e21e
LW		 1604 goto just_say_no;
1605 }
1606 else {
c7bd8b84 1607 SV *sv = sv_newmortal();
a0d0e21e
LW		 1608 do_sprintf(sv, SP - MARK, MARK + 1);
1609 if (!do_print(sv, fp))
1610 goto just_say_no;
1611
1612 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1613 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW		 1614 goto just_say_no;
1615 }
a0d0e21e 1616 SP = ORIGMARK;
3280af22 1617 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1618 RETURN;
1619
1620 just_say_no:
a0d0e21e 1621 SP = ORIGMARK;
3280af22 1622 PUSHs(&PL_sv_undef);
a0d0e21e
LW		 1623 RETURN;
1624}
1625
c07a80fd 1626PP(pp_sysopen)
1627{
39644a26 1628 dSP;
de5e49e1 1629 const int perm = (MAXARG > 3 && (TOPs || POPs)) ? POPi : 0666;
1df70142 1630 const int mode = POPi;
1b6737cc 1631 SV * const sv = POPs;
159b6efe 1632 GV * const gv = MUTABLE_GV(POPs);
1b6737cc 1633 STRLEN len;
c07a80fd 1634
4592e6ca 1635 /* Need TIEHANDLE method ? */
1b6737cc 1636 const char * const tmps = SvPV_const(sv, len);
d5eb9a46 1637 if (do_open_raw(gv, tmps, len, mode, perm)) {
c07a80fd 1638 IoLINES(GvIOp(gv)) = 0;
3280af22 1639 PUSHs(&PL_sv_yes);
c07a80fd 1640 }
1641 else {
3280af22 1642 PUSHs(&PL_sv_undef);
c07a80fd 1643 }
1644 RETURN;
1645}
1646
b1c05ba5
DM		 1647
1648/* also used for: pp_read() and pp_recv() (where supported) */
1649
a0d0e21e
LW		 1650PP(pp_sysread)
1651{
20b7effb 1652 dSP; dMARK; dORIGMARK; dTARGET;
0b423688 1653 SSize_t offset;
a0d0e21e
LW		 1654 IO *io;
1655 char *buffer;
0b423688 1656 STRLEN orig_size;
5b54f415 1657 SSize_t length;
eb5c063a 1658 SSize_t count;
748a9306 1659 SV *bufsv;
a0d0e21e 1660 STRLEN blen;
eb5c063a 1661 int fp_utf8;
1dd30107
NC		 1662 int buffer_utf8;
1663 SV *read_target;
eb5c063a
NIS		 1664 Size_t got = 0;
1665 Size_t wanted;
1d636c13 1666 bool charstart = FALSE;
87330c3c
JH		 1667 STRLEN charskip = 0;
1668 STRLEN skip = 0;
159b6efe 1669 GV * const gv = MUTABLE_GV(*++MARK);
375ed12a
JH		 1670 int fd;
1671
5b468f54 1672 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1b6737cc 1673 && gv && (io = GvIO(gv)) )
137443ea 1674 {
a5e1d062 1675 const MAGIC *const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1b6737cc 1676 if (mg) {
3e0cb5de 1677 return Perl_tied_method(aTHX_ SV_CONST(READ), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC		 1678 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1679 sp - mark);
1b6737cc 1680 }
2ae324a7 1681 }
1682
a0d0e21e
LW		 1683 if (!gv)
1684 goto say_undef;
748a9306 1685 bufsv = *++MARK;
ff68c719 1686 if (! SvOK(bufsv))
60e13354 1687 SvPVCLEAR(bufsv);
a0d0e21e 1688 length = SvIVx(*++MARK);
4bac9ae4
CS		 1689 if (length < 0)
1690 DIE(aTHX_ "Negative length");
748a9306 1691 SETERRNO(0,0);
a0d0e21e
LW		 1692 if (MARK < SP)
1693 offset = SvIVx(*++MARK);
1694 else
1695 offset = 0;
1696 io = GvIO(gv);
b5fe5ca2 1697 if (!io || !IoIFP(io)) {
51087808 1698 report_evil_fh(gv);
b5fe5ca2 1699 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1700 goto say_undef;
b5fe5ca2 1701 }
375ed12a
JH		 1702
1703 /* Note that fd can here validly be -1, don't check it yet. */
1704 fd = PerlIO_fileno(IoIFP(io));
1705
0064a8a9 1706 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
fb10a8a7
TC		 1707 if (PL_op->op_type == OP_SYSREAD || PL_op->op_type == OP_RECV) {
1708 Perl_ck_warner(aTHX_ packWARN(WARN_DEPRECATED),
1709 "%s() is deprecated on :utf8 handles",
1710 OP_DESC(PL_op));
1711 }
7d59b7e4 1712 buffer = SvPVutf8_force(bufsv, blen);
1e54db1a 1713 /* UTF-8 may not have been set if they are all low bytes */
eb5c063a 1714 SvUTF8_on(bufsv);
9b9d7ce8 1715 buffer_utf8 = 0;
7d59b7e4
NIS		 1716 }
1717 else {
1718 buffer = SvPV_force(bufsv, blen);
1dd30107 1719 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
7d59b7e4 1720 }
4bac9ae4 1721 if (DO_UTF8(bufsv)) {
3f914778 1722 blen = sv_len_utf8_nomg(bufsv);
4bac9ae4 1723 }
7d59b7e4 1724
d0965105
JH		 1725 charstart = TRUE;
1726 charskip = 0;
87330c3c 1727 skip = 0;
4bac9ae4 1728 wanted = length;
d0965105 1729
a0d0e21e 1730#ifdef HAS_SOCKET
533c011a 1731 if (PL_op->op_type == OP_RECV) {
0b423688 1732 Sock_size_t bufsize;
46fc3d4c 1733 char namebuf[MAXPATHLEN];
375ed12a
JH		 1734 if (fd < 0) {
1735 SETERRNO(EBADF,SS_IVCHAN);
1736 RETPUSHUNDEF;
1737 }
b5afd346 1738#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
490ab354
JH		 1739 bufsize = sizeof (struct sockaddr_in);
1740#else
46fc3d4c 1741 bufsize = sizeof namebuf;
490ab354 1742#endif
abf95952
IZ		 1743#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1744 if (bufsize >= 256)
1745 bufsize = 255;
1746#endif
eb160463 1747 buffer = SvGROW(bufsv, (STRLEN)(length+1));
bbce6d69 1748 /* 'offset' means 'flags' here */
375ed12a 1749 count = PerlSock_recvfrom(fd, buffer, length, offset,
10edeb5d 1750 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1751 if (count < 0)
a0d0e21e 1752 RETPUSHUNDEF;
8eb023a9
DM		 1753 /* MSG_TRUNC can give oversized count; quietly lose it */
1754 if (count > length)
1755 count = length;
eb5c063a 1756 SvCUR_set(bufsv, count);
748a9306
LW		 1757 *SvEND(bufsv) = '\0';
1758 (void)SvPOK_only(bufsv);
eb5c063a
NIS		 1759 if (fp_utf8)
1760 SvUTF8_on(bufsv);
748a9306 1761 SvSETMAGIC(bufsv);
aac0dd9a 1762 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1763 if (!(IoFLAGS(io) & IOf_UNTAINT))
1764 SvTAINTED_on(bufsv);
a0d0e21e 1765 SP = ORIGMARK;
e122534c
TC		 1766#if defined(__CYGWIN__)
1767 /* recvfrom() on cygwin doesn't set bufsize at all for
1768 connected sockets, leaving us with trash in the returned
1769 name, so use the same test as the Win32 code to check if it
1770 wasn't set, and set it [perl #118843] */
1771 if (bufsize == sizeof namebuf)
1772 bufsize = 0;
1773#endif
46fc3d4c 1774 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW		 1775 PUSHs(TARG);
1776 RETURN;
1777 }
a0d0e21e 1778#endif
bbce6d69 1779 if (offset < 0) {
0b423688 1780 if (-offset > (SSize_t)blen)
cea2e8a9 1781 DIE(aTHX_ "Offset outside string");
bbce6d69 1782 offset += blen;
1783 }
eb5c063a
NIS		 1784 if (DO_UTF8(bufsv)) {
1785 /* convert offset-as-chars to offset-as-bytes */
d5f981bb 1786 if (offset >= (SSize_t)blen)
6960c29a
CH		 1787 offset += SvCUR(bufsv) - blen;
1788 else
1789 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
eb5c063a 1790 }
375ed12a 1791
eb5c063a 1792 more_bytes:
375ed12a
JH		 1793 /* Reestablish the fd in case it shifted from underneath us. */
1794 fd = PerlIO_fileno(IoIFP(io));
1795
0b423688 1796 orig_size = SvCUR(bufsv);
1dd30107
NC		 1797 /* Allocating length + offset + 1 isn't perfect in the case of reading
1798 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1799 unduly.
1800 (should be 2 * length + offset + 1, or possibly something longer if
47e13f24 1801 IN_ENCODING Is true) */
eb160463 1802 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
0b423688
TC		 1803 if (offset > 0 && offset > (SSize_t)orig_size) { /* Zero any newly allocated space */
1804 Zero(buffer+orig_size, offset-orig_size, char);
cd52b7b2 1805 }
eb5c063a 1806 buffer = buffer + offset;
1dd30107
NC		 1807 if (!buffer_utf8) {
1808 read_target = bufsv;
1809 } else {
1810 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1811 concatenate it to the current buffer. */
1812
1813 /* Truncate the existing buffer to the start of where we will be
1814 reading to: */
1815 SvCUR_set(bufsv, offset);
1816
1817 read_target = sv_newmortal();
862a34c6 1818 SvUPGRADE(read_target, SVt_PV);
fe2774ed 1819 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1dd30107 1820 }
eb5c063a 1821
533c011a 1822 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1823#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1824 if (IoTYPE(io) == IoTYPE_SOCKET) {
375ed12a
JH		 1825 if (fd < 0) {
1826 SETERRNO(EBADF,SS_IVCHAN);
1827 count = -1;
1828 }
1829 else
1830 count = PerlSock_recv(fd, buffer, length, 0);
a7092146
GS		 1831 }
1832 else
1833#endif
1834 {
375ed12a
JH		 1835 if (fd < 0) {
1836 SETERRNO(EBADF,RMS_IFI);
1837 count = -1;
1838 }
1839 else
1840 count = PerlLIO_read(fd, buffer, length);
a7092146 1841 }
a0d0e21e
LW		 1842 }
1843 else
3b02c43c 1844 {
eb5c063a
NIS		 1845 count = PerlIO_read(IoIFP(io), buffer, length);
1846 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1847 if (count == 0 && PerlIO_error(IoIFP(io)))
1848 count = -1;
3b02c43c 1849 }
eb5c063a 1850 if (count < 0) {
7716c5c5 1851 if (IoTYPE(io) == IoTYPE_WRONLY)
a5390457 1852 report_wrongway_fh(gv, '>');
a0d0e21e 1853 goto say_undef;
af8c498a 1854 }
aa07b2f6 1855 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1dd30107
NC		 1856 *SvEND(read_target) = '\0';
1857 (void)SvPOK_only(read_target);
0064a8a9 1858 if (fp_utf8 && !IN_BYTES) {
eb5c063a 1859 /* Look at utf8 we got back and count the characters */
1df70142 1860 const char *bend = buffer + count;
eb5c063a 1861 while (buffer < bend) {
d0965105
JH		 1862 if (charstart) {
1863 skip = UTF8SKIP(buffer);
1864 charskip = 0;
1865 }
1866 if (buffer - charskip + skip > bend) {
eb5c063a
NIS		 1867 /* partial character - try for rest of it */
1868 length = skip - (bend-buffer);
aa07b2f6 1869 offset = bend - SvPVX_const(bufsv);
d0965105
JH		 1870 charstart = FALSE;
1871 charskip += count;
eb5c063a
NIS		 1872 goto more_bytes;
1873 }
1874 else {
1875 got++;
1876 buffer += skip;
d0965105
JH		 1877 charstart = TRUE;
1878 charskip = 0;
eb5c063a
NIS		 1879 }
1880 }
1881 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1882 provided amount read (count) was what was requested (length)
1883 */
1884 if (got < wanted && count == length) {
d0965105 1885 length = wanted - got;
aa07b2f6 1886 offset = bend - SvPVX_const(bufsv);
eb5c063a
NIS		 1887 goto more_bytes;
1888 }
1889 /* return value is character count */
1890 count = got;
1891 SvUTF8_on(bufsv);
1892 }
1dd30107
NC		 1893 else if (buffer_utf8) {
1894 /* Let svcatsv upgrade the bytes we read in to utf8.
1895 The buffer is a mortal so will be freed soon. */
1896 sv_catsv_nomg(bufsv, read_target);
1897 }
748a9306 1898 SvSETMAGIC(bufsv);
aac0dd9a 1899 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1900 if (!(IoFLAGS(io) & IOf_UNTAINT))
1901 SvTAINTED_on(bufsv);
a0d0e21e 1902 SP = ORIGMARK;
eb5c063a 1903 PUSHi(count);
a0d0e21e
LW		 1904 RETURN;
1905
1906 say_undef:
1907 SP = ORIGMARK;
1908 RETPUSHUNDEF;
1909}
1910
b1c05ba5
DM		 1911
1912/* also used for: pp_send() where defined */
1913
60504e18 1914PP(pp_syswrite)
a0d0e21e 1915{
20b7effb 1916 dSP; dMARK; dORIGMARK; dTARGET;
748a9306 1917 SV *bufsv;
83003860 1918 const char *buffer;
8c99d73e 1919 SSize_t retval;
a0d0e21e 1920 STRLEN blen;
c9cb0f41 1921 STRLEN orig_blen_bytes;
64a1bc8e 1922 const int op_type = PL_op->op_type;
c9cb0f41
NC		 1923 bool doing_utf8;
1924 U8 *tmpbuf = NULL;
159b6efe 1925 GV *const gv = MUTABLE_GV(*++MARK);
91472ad4 1926 IO *const io = GvIO(gv);
375ed12a 1927 int fd;
91472ad4
NC		 1928
1929 if (op_type == OP_SYSWRITE && io) {
a5e1d062 1930 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1931 if (mg) {
a79db61d 1932 if (MARK == SP - 1) {
c8834ab7
TC		 1933 SV *sv = *SP;
1934 mXPUSHi(sv_len(sv));
a79db61d
AL		 1935 PUTBACK;
1936 }
1937
3e0cb5de 1938 return Perl_tied_method(aTHX_ SV_CONST(WRITE), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC		 1939 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1940 sp - mark);
64a1bc8e 1941 }
1d603a67 1942 }
a0d0e21e
LW		 1943 if (!gv)
1944 goto say_undef;
64a1bc8e 1945
748a9306 1946 bufsv = *++MARK;
64a1bc8e 1947
748a9306 1948 SETERRNO(0,0);
cf167416 1949 if (!io || !IoIFP(io) || IoTYPE(io) == IoTYPE_RDONLY) {
8c99d73e 1950 retval = -1;
51087808
NC		 1951 if (io && IoIFP(io))
1952 report_wrongway_fh(gv, '<');
1953 else
1954 report_evil_fh(gv);
b5fe5ca2 1955 SETERRNO(EBADF,RMS_IFI);
7d59b7e4
NIS		 1956 goto say_undef;
1957 }
375ed12a
JH		 1958 fd = PerlIO_fileno(IoIFP(io));
1959 if (fd < 0) {
1960 SETERRNO(EBADF,SS_IVCHAN);
1961 retval = -1;
1962 goto say_undef;
1963 }
7d59b7e4 1964
c9cb0f41
NC		 1965 /* Do this first to trigger any overloading. */
1966 buffer = SvPV_const(bufsv, blen);
1967 orig_blen_bytes = blen;
1968 doing_utf8 = DO_UTF8(bufsv);
1969
7d59b7e4 1970 if (PerlIO_isutf8(IoIFP(io))) {
fb10a8a7
TC		 1971 Perl_ck_warner(aTHX_ packWARN(WARN_DEPRECATED),
1972 "%s() is deprecated on :utf8 handles",
1973 OP_DESC(PL_op));
6aa2f6a7 1974 if (!SvUTF8(bufsv)) {
c9cb0f41
NC		 1975 /* We don't modify the original scalar. */
1976 tmpbuf = bytes_to_utf8((const U8*) buffer, &blen);
1977 buffer = (char *) tmpbuf;
1978 doing_utf8 = TRUE;
1979 }
a0d0e21e 1980 }
c9cb0f41
NC		 1981 else if (doing_utf8) {
1982 STRLEN tmplen = blen;
a79db61d 1983 U8 * const result = bytes_from_utf8((const U8*) buffer, &tmplen, &doing_utf8);
c9cb0f41
NC		 1984 if (!doing_utf8) {
1985 tmpbuf = result;
1986 buffer = (char *) tmpbuf;
1987 blen = tmplen;
1988 }
1989 else {
1990 assert((char *)result == buffer);
1991 Perl_croak(aTHX_ "Wide character in %s", OP_DESC(PL_op));
1992 }
7d59b7e4
NIS		 1993 }
1994
e2712234 1995#ifdef HAS_SOCKET
7627e6d0 1996 if (op_type == OP_SEND) {
e2712234
NC		 1997 const int flags = SvIVx(*++MARK);
1998 if (SP > MARK) {
1999 STRLEN mlen;
2000 char * const sockbuf = SvPVx(*++MARK, mlen);
375ed12a 2001 retval = PerlSock_sendto(fd, buffer, blen,
e2712234
NC		 2002 flags, (struct sockaddr *)sockbuf, mlen);
2003 }
2004 else {
375ed12a 2005 retval = PerlSock_send(fd, buffer, blen, flags);
e2712234 2006 }
7627e6d0
NC		 2007 }
2008 else
e2712234 2009#endif
7627e6d0 2010 {
c9cb0f41
NC		 2011 Size_t length = 0; /* This length is in characters. */
2012 STRLEN blen_chars;
7d59b7e4 2013 IV offset;
c9cb0f41
NC		 2014
2015 if (doing_utf8) {
2016 if (tmpbuf) {
2017 /* The SV is bytes, and we've had to upgrade it. */
2018 blen_chars = orig_blen_bytes;
2019 } else {
2020 /* The SV really is UTF-8. */
3f914778
FC		 2021 /* Don't call sv_len_utf8 on a magical or overloaded
2022 scalar, as we might get back a different result. */
2023 blen_chars = sv_or_pv_len_utf8(bufsv, buffer, blen);
c9cb0f41
NC		 2024 }
2025 } else {
2026 blen_chars = blen;
2027 }
2028
2029 if (MARK >= SP) {
2030 length = blen_chars;
2031 } else {
2032#if Size_t_size > IVSIZE
2033 length = (Size_t)SvNVx(*++MARK);
2034#else
2035 length = (Size_t)SvIVx(*++MARK);
2036#endif
4b0c4b6f
NC		 2037 if ((SSize_t)length < 0) {
2038 Safefree(tmpbuf);
c9cb0f41 2039 DIE(aTHX_ "Negative length");
4b0c4b6f 2040 }
7d59b7e4 2041 }
c9cb0f41 2042
bbce6d69 2043 if (MARK < SP) {
a0d0e21e 2044 offset = SvIVx(*++MARK);
bbce6d69 2045 if (offset < 0) {
4b0c4b6f
NC		 2046 if (-offset > (IV)blen_chars) {
2047 Safefree(tmpbuf);
cea2e8a9 2048 DIE(aTHX_ "Offset outside string");
4b0c4b6f 2049 }
c9cb0f41 2050 offset += blen_chars;
3c946528 2051 } else if (offset > (IV)blen_chars) {
4b0c4b6f 2052 Safefree(tmpbuf);
cea2e8a9 2053 DIE(aTHX_ "Offset outside string");
4b0c4b6f 2054 }
bbce6d69 2055 } else
a0d0e21e 2056 offset = 0;
c9cb0f41
NC		 2057 if (length > blen_chars - offset)
2058 length = blen_chars - offset;
2059 if (doing_utf8) {
2060 /* Here we convert length from characters to bytes. */
2061 if (tmpbuf || SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
2062 /* Either we had to convert the SV, or the SV is magical, or
2063 the SV has overloading, in which case we can't or mustn't
2064 or mustn't call it again. */
2065
2066 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
2067 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
2068 } else {
2069 /* It's a real UTF-8 SV, and it's not going to change under
2070 us. Take advantage of any cache. */
2071 I32 start = offset;
2072 I32 len_I32 = length;
2073
2074 /* Convert the start and end character positions to bytes.
2075 Remember that the second argument to sv_pos_u2b is relative
2076 to the first. */
2077 sv_pos_u2b(bufsv, &start, &len_I32);
2078
2079 buffer += start;
2080 length = len_I32;
2081 }
7d59b7e4
NIS		 2082 }
2083 else {
2084 buffer = buffer+offset;
2085 }
a7092146 2086#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 2087 if (IoTYPE(io) == IoTYPE_SOCKET) {
375ed12a 2088 retval = PerlSock_send(fd, buffer, length, 0);
a7092146
GS		 2089 }
2090 else
2091#endif
2092 {
94e4c244 2093 /* See the note at doio.c:do_print about filesize limits. --jhi */
375ed12a 2094 retval = PerlLIO_write(fd, buffer, length);
a7092146 2095 }
a0d0e21e 2096 }
c9cb0f41 2097
8c99d73e 2098 if (retval < 0)
a0d0e21e
LW		 2099 goto say_undef;
2100 SP = ORIGMARK;
c9cb0f41 2101 if (doing_utf8)
f36eea10 2102 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
4b0c4b6f 2103
a79db61d 2104 Safefree(tmpbuf);
8c99d73e
GS		 2105#if Size_t_size > IVSIZE
2106 PUSHn(retval);
2107#else
2108 PUSHi(retval);
2109#endif
a0d0e21e
LW		 2110 RETURN;
2111
2112 say_undef:
a79db61d 2113 Safefree(tmpbuf);
a0d0e21e
LW		 2114 SP = ORIGMARK;
2115 RETPUSHUNDEF;
2116}
2117
a0d0e21e
LW		 2118PP(pp_eof)
2119{
20b7effb 2120 dSP;
a0d0e21e 2121 GV *gv;
32e65323 2122 IO *io;
a5e1d062 2123 const MAGIC *mg;
bc0c81ca
NC		 2124 /*
2125 * in Perl 5.12 and later, the additional parameter is a bitmask:
2126 * 0 = eof
2127 * 1 = eof(FH)
2128 * 2 = eof() <- ARGV magic
2129 *
2130 * I'll rely on the compiler's trace flow analysis to decide whether to
2131 * actually assign this out here, or punt it into the only block where it is
2132 * used. Doing it out here is DRY on the condition logic.
2133 */
2134 unsigned int which;
a0d0e21e 2135
bc0c81ca 2136 if (MAXARG) {
32e65323 2137 gv = PL_last_in_gv = MUTABLE_GV(POPs); /* eof(FH) */
bc0c81ca
NC		 2138 which = 1;
2139 }
b5f55170
NC		 2140 else {
2141 EXTEND(SP, 1);
2142
bc0c81ca 2143 if (PL_op->op_flags & OPf_SPECIAL) {
b5f55170 2144 gv = PL_last_in_gv = GvEGVx(PL_argvgv); /* eof() - ARGV magic */
bc0c81ca
NC		 2145 which = 2;
2146 }
2147 else {
b5f55170 2148 gv = PL_last_in_gv; /* eof */
bc0c81ca
NC		 2149 which = 0;
2150 }
b5f55170 2151 }
32e65323
CS		 2152
2153 if (!gv)
2154 RETPUSHNO;
2155
2156 if ((io = GvIO(gv)) && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) {
3e0cb5de 2157 return tied_method1(SV_CONST(EOF), SP, MUTABLE_SV(io), mg, newSVuv(which));
146174a9 2158 }
4592e6ca 2159
32e65323
CS		 2160 if (!MAXARG && (PL_op->op_flags & OPf_SPECIAL)) { /* eof() */
2161 if (io && !IoIFP(io)) {
b9f2b683 2162 if ((IoFLAGS(io) & IOf_START) && av_tindex(GvAVn(gv)) < 0) {
1037353b 2163 SV ** svp;
32e65323
CS		 2164 IoLINES(io) = 0;
2165 IoFLAGS(io) &= ~IOf_START;
d5eb9a46 2166 do_open6(gv, "-", 1, NULL, NULL, 0);
1037353b
DD		 2167 svp = &GvSV(gv);
2168 if (*svp) {
2169 SV * sv = *svp;
2170 sv_setpvs(sv, "-");
2171 SvSETMAGIC(sv);
2172 }
32e65323 2173 else
1037353b 2174 *svp = newSVpvs("-");
32e65323 2175 }
157fb5a1 2176 else if (!nextargv(gv, FALSE))
32e65323 2177 RETPUSHYES;
6136c704 2178 }
4592e6ca
NIS		 2179 }
2180
32e65323 2181 PUSHs(boolSV(do_eof(gv)));
a0d0e21e
LW		 2182 RETURN;
2183}
2184
2185PP(pp_tell)
2186{
20b7effb 2187 dSP; dTARGET;
301e8125 2188 GV *gv;
5b468f54 2189 IO *io;
a0d0e21e 2190
b64a1294 2191 if (MAXARG != 0 && (TOPs || POPs))
159b6efe 2192 PL_last_in_gv = MUTABLE_GV(POPs);
ac3697cd
NC		 2193 else
2194 EXTEND(SP, 1);
c4420975 2195 gv = PL_last_in_gv;
4592e6ca 2196
9c9f25b8
NC		 2197 io = GvIO(gv);
2198 if (io) {
a5e1d062 2199 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2200 if (mg) {
3e0cb5de 2201 return tied_method0(SV_CONST(TELL), SP, MUTABLE_SV(io), mg);
a79db61d 2202 }
4592e6ca 2203 }
f4817f32 2204 else if (!gv) {
f03173f2
RGS		 2205 if (!errno)
2206 SETERRNO(EBADF,RMS_IFI);
2207 PUSHi(-1);
2208 RETURN;
2209 }
4592e6ca 2210
146174a9
CB		 2211#if LSEEKSIZE > IVSIZE
2212 PUSHn( do_tell(gv) );
2213#else
a0d0e21e 2214 PUSHi( do_tell(gv) );
146174a9 2215#endif
a0d0e21e
LW		 2216 RETURN;
2217}
2218
b1c05ba5
DM		 2219
2220/* also used for: pp_seek() */
2221
137443ea 2222PP(pp_sysseek)
2223{
20b7effb 2224 dSP;
1df70142 2225 const int whence = POPi;
146174a9 2226#if LSEEKSIZE > IVSIZE
7452cf6a 2227 const Off_t offset = (Off_t)SvNVx(POPs);
146174a9 2228#else
7452cf6a 2229 const Off_t offset = (Off_t)SvIVx(POPs);
146174a9 2230#endif
a0d0e21e 2231
159b6efe 2232 GV * const gv = PL_last_in_gv = MUTABLE_GV(POPs);
9c9f25b8 2233 IO *const io = GvIO(gv);
4592e6ca 2234
9c9f25b8 2235 if (io) {
a5e1d062 2236 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2237 if (mg) {
cb50131a 2238#if LSEEKSIZE > IVSIZE
74f0b550 2239 SV *const offset_sv = newSVnv((NV) offset);
cb50131a 2240#else
74f0b550 2241 SV *const offset_sv = newSViv(offset);
cb50131a 2242#endif
bc0c81ca 2243
3e0cb5de 2244 return tied_method2(SV_CONST(SEEK), SP, MUTABLE_SV(io), mg, offset_sv,
d682515d 2245 newSViv(whence));
a79db61d 2246 }
4592e6ca
NIS		 2247 }
2248
533c011a 2249 if (PL_op->op_type == OP_SEEK)
8903cb82 2250 PUSHs(boolSV(do_seek(gv, offset, whence)));
2251 else {
0bcc34c2 2252 const Off_t sought = do_sysseek(gv, offset, whence);
b448e4fe 2253 if (sought < 0)
146174a9
CB		 2254 PUSHs(&PL_sv_undef);
2255 else {
7452cf6a 2256 SV* const sv = sought ?
146174a9 2257#if LSEEKSIZE > IVSIZE
b448e4fe 2258 newSVnv((NV)sought)
146174a9 2259#else
b448e4fe 2260 newSViv(sought)
146174a9
CB		 2261#endif
2262 : newSVpvn(zero_but_true, ZBTLEN);
6e449a3a 2263 mPUSHs(sv);
146174a9 2264 }
8903cb82 2265 }
a0d0e21e
LW		 2266 RETURN;
2267}
2268
2269PP(pp_truncate)
2270{
39644a26 2271 dSP;
8c99d73e
GS		 2272 /* There seems to be no consensus on the length type of truncate()
2273 * and ftruncate(), both off_t and size_t have supporters. In
2274 * general one would think that when using large files, off_t is
2275 * at least as wide as size_t, so using an off_t should be okay. */
2276 /* XXX Configure probe for the length type of *truncate() needed XXX */
0bcc34c2 2277 Off_t len;
a0d0e21e 2278
25342a55 2279#if Off_t_size > IVSIZE
0bcc34c2 2280 len = (Off_t)POPn;
8c99d73e 2281#else
0bcc34c2 2282 len = (Off_t)POPi;
8c99d73e
GS		 2283#endif
2284 /* Checking for length < 0 is problematic as the type might or
301e8125 2285 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 2286 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2287 SETERRNO(0,0);
d05c1ba0 2288 {
5e0adc2d 2289 SV * const sv = POPs;
d05c1ba0
JH		 2290 int result = 1;
2291 GV *tmpgv;
090bf15b
SR		 2292 IO *io;
2293
42409c40
FC		 2294 if (PL_op->op_flags & OPf_SPECIAL
2295 ? (tmpgv = gv_fetchsv(sv, 0, SVt_PVIO), 1)
2296 : !!(tmpgv = MAYBE_DEREF_GV(sv)) ) {
9c9f25b8
NC		 2297 io = GvIO(tmpgv);
2298 if (!io)
090bf15b 2299 result = 0;
d05c1ba0 2300 else {
090bf15b 2301 PerlIO *fp;
090bf15b
SR		 2302 do_ftruncate_io:
2303 TAINT_PROPER("truncate");
2304 if (!(fp = IoIFP(io))) {
2305 result = 0;
2306 }
2307 else {
375ed12a
JH		 2308 int fd = PerlIO_fileno(fp);
2309 if (fd < 0) {
2310 SETERRNO(EBADF,RMS_IFI);
2311 result = 0;
2312 } else {
a9f17b43
JH		 2313 if (len < 0) {
2314 SETERRNO(EINVAL, LIB_INVARG);
2315 result = 0;
2316 } else {
2317 PerlIO_flush(fp);
cbdc8872 2318#ifdef HAS_TRUNCATE
a9f17b43 2319 if (ftruncate(fd, len) < 0)
301e8125 2320#else
a9f17b43 2321 if (my_chsize(fd, len) < 0)
cbdc8872 2322#endif
a9f17b43
JH		 2323 result = 0;
2324 }
375ed12a 2325 }
090bf15b 2326 }
d05c1ba0 2327 }
cbdc8872 2328 }
5e0adc2d 2329 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2330 io = MUTABLE_IO(SvRV(sv)); /* *main::FRED{IO} for example */
090bf15b 2331 goto do_ftruncate_io;
5e0adc2d
FC		 2332 }
2333 else {
2334 const char * const name = SvPV_nomg_const_nolen(sv);
d05c1ba0 2335 TAINT_PROPER("truncate");
cbdc8872 2336#ifdef HAS_TRUNCATE
d05c1ba0
JH		 2337 if (truncate(name, len) < 0)
2338 result = 0;
cbdc8872 2339#else
d05c1ba0 2340 {
d484df69
TC		 2341 int mode = O_RDWR;
2342 int tmpfd;
2343
2344#if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE)
2345 mode |= O_LARGEFILE; /* Transparently largefiley. */
2346#endif
2347#ifdef O_BINARY
2348 /* On open(), the Win32 CRT tries to seek around text
2349 * files using 32-bit offsets, which causes the open()
2350 * to fail on large files, so open in binary mode.
2351 */
2352 mode |= O_BINARY;
2353#endif
2354 tmpfd = PerlLIO_open(name, mode);
d05c1ba0 2355
375ed12a 2356 if (tmpfd < 0) {
cbdc8872 2357 result = 0;
375ed12a 2358 } else {
d05c1ba0
JH		 2359 if (my_chsize(tmpfd, len) < 0)
2360 result = 0;
2361 PerlLIO_close(tmpfd);
2362 }
cbdc8872 2363 }
a0d0e21e 2364#endif
d05c1ba0 2365 }
a0d0e21e 2366
d05c1ba0
JH		 2367 if (result)
2368 RETPUSHYES;
2369 if (!errno)
93189314 2370 SETERRNO(EBADF,RMS_IFI);
d05c1ba0
JH		 2371 RETPUSHUNDEF;
2372 }
a0d0e21e
LW		 2373}
2374
b1c05ba5
DM		 2375
2376/* also used for: pp_fcntl() */
2377
a0d0e21e
LW		 2378PP(pp_ioctl)
2379{
20b7effb 2380 dSP; dTARGET;
7452cf6a 2381 SV * const argsv = POPs;
1df70142 2382 const unsigned int func = POPu;
49225470 2383 int optype;
159b6efe 2384 GV * const gv = MUTABLE_GV(POPs);
8a6c0fcb 2385 IO * const io = GvIOn(gv);
a0d0e21e 2386 char *s;
324aa91a 2387 IV retval;
a0d0e21e 2388
8a6c0fcb 2389 if (!IoIFP(io)) {
51087808 2390 report_evil_fh(gv);
93189314 2391 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
a0d0e21e
LW		 2392 RETPUSHUNDEF;
2393 }
2394
748a9306 2395 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2396 STRLEN len;
324aa91a 2397 STRLEN need;
748a9306 2398 s = SvPV_force(argsv, len);
324aa91a
HF		 2399 need = IOCPARM_LEN(func);
2400 if (len < need) {
2401 s = Sv_Grow(argsv, need + 1);
2402 SvCUR_set(argsv, need);
a0d0e21e
LW		 2403 }
2404
748a9306 2405 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW		 2406 }
2407 else {
748a9306 2408 retval = SvIV(argsv);
c529f79d 2409 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW		 2410 }
2411
49225470 2412 optype = PL_op->op_type;
ed4b2e6b 2413 TAINT_PROPER(PL_op_desc[optype]);
a0d0e21e
LW		 2414
2415 if (optype == OP_IOCTL)
2416#ifdef HAS_IOCTL
76e3520e 2417 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2418#else
cea2e8a9 2419 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW		 2420#endif
2421 else
c214f4ad
WB		 2422#ifndef HAS_FCNTL
2423 DIE(aTHX_ "fcntl is not implemented");
2424#else
55497cff 2425#if defined(OS2) && defined(__EMX__)
760ac839 2426 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2427#else
760ac839 2428 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2429#endif
6652bd42 2430#endif
a0d0e21e 2431
6652bd42 2432#if defined(HAS_IOCTL) || defined(HAS_FCNTL)
748a9306
LW		 2433 if (SvPOK(argsv)) {
2434 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2435 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
53e06cf0 2436 OP_NAME(PL_op));
748a9306
LW		 2437 s[SvCUR(argsv)] = 0; /* put our null back */
2438 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW		 2439 }
2440
2441 if (retval == -1)
2442 RETPUSHUNDEF;
2443 if (retval != 0) {
2444 PUSHi(retval);
2445 }
2446 else {
8903cb82 2447 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e 2448 }
4808266b 2449#endif
c214f4ad 2450 RETURN;
a0d0e21e
LW		 2451}
2452
2453PP(pp_flock)
2454{
9cad6237 2455#ifdef FLOCK
20b7effb 2456 dSP; dTARGET;
a0d0e21e 2457 I32 value;
7452cf6a 2458 const int argtype = POPi;
1f28cbca 2459 GV * const gv = MUTABLE_GV(POPs);
9c9f25b8
NC		 2460 IO *const io = GvIO(gv);
2461 PerlIO *const fp = io ? IoIFP(io) : NULL;
16d20bd9 2462
0bcc34c2 2463 /* XXX Looks to me like io is always NULL at this point */
a0d0e21e 2464 if (fp) {
68dc0745 2465 (void)PerlIO_flush(fp);
76e3520e 2466 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2467 }
cb50131a 2468 else {
51087808 2469 report_evil_fh(gv);
a0d0e21e 2470 value = 0;
93189314 2471 SETERRNO(EBADF,RMS_IFI);
cb50131a 2472 }
a0d0e21e
LW		 2473 PUSHi(value);
2474 RETURN;
2475#else
56a94ef2 2476 DIE(aTHX_ PL_no_func, "flock");
a0d0e21e
LW		 2477#endif
2478}
2479
2480/* Sockets. */
2481
7627e6d0
NC		 2482#ifdef HAS_SOCKET
2483
a0d0e21e
LW		 2484PP(pp_socket)
2485{
20b7effb 2486 dSP;
7452cf6a
AL		 2487 const int protocol = POPi;
2488 const int type = POPi;
2489 const int domain = POPi;
159b6efe 2490 GV * const gv = MUTABLE_GV(POPs);
5805b585 2491 IO * const io = GvIOn(gv);
a0d0e21e
LW		 2492 int fd;
2493
57171420
BS		 2494 if (IoIFP(io))
2495 do_close(gv, FALSE);
2496
a0d0e21e 2497 TAINT_PROPER("socket");
6ad3d225 2498 fd = PerlSock_socket(domain, type, protocol);
375ed12a 2499 if (fd < 0) {
a0d0e21e 2500 RETPUSHUNDEF;
375ed12a 2501 }
460c8493
IZ		 2502 IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2503 IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2504 IoTYPE(io) = IoTYPE_SOCKET;
a0d0e21e 2505 if (!IoIFP(io) || !IoOFP(io)) {
760ac839
LW		 2506 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2507 if (IoOFP(io)) PerlIO_close(IoOFP(io));
6ad3d225 2508 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
a0d0e21e
LW		 2509 RETPUSHUNDEF;
2510 }
131d45a9
JH		 2511#if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
2512 /* ensure close-on-exec */
2513 if (fd > PL_maxsysfd && fcntl(fd, F_SETFD, FD_CLOEXEC) < 0)
375ed12a 2514 RETPUSHUNDEF;
8d2a6795 2515#endif
a0d0e21e
LW		 2516
2517 RETPUSHYES;
a0d0e21e 2518}
7627e6d0 2519#endif
a0d0e21e
LW		 2520
2521PP(pp_sockpair)
2522{
c95c94b1 2523#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
20b7effb 2524 dSP;
e0b7b5e2 2525 int fd[2];
7452cf6a
AL		 2526 const int protocol = POPi;
2527 const int type = POPi;
2528 const int domain = POPi;
e0b7b5e2 2529
159b6efe 2530 GV * const gv2 = MUTABLE_GV(POPs);
49561e08
FC		 2531 IO * const io2 = GvIOn(gv2);
2532 GV * const gv1 = MUTABLE_GV(POPs);
2533 IO * const io1 = GvIOn(gv1);
a0d0e21e 2534
49561e08 2535 if (IoIFP(io1))
dc0d0a5f 2536 do_close(gv1, FALSE);
49561e08 2537 if (IoIFP(io2))
dc0d0a5f 2538 do_close(gv2, FALSE);
57171420 2539
a0d0e21e 2540 TAINT_PROPER("socketpair");
6ad3d225 2541 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
a0d0e21e 2542 RETPUSHUNDEF;
460c8493
IZ		 2543 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2544 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
50952442 2545 IoTYPE(io1) = IoTYPE_SOCKET;
460c8493
IZ		 2546 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2547 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
50952442 2548 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2549 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW		 2550 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2551 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2552 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW		 2553 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2554 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2555 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW		 2556 RETPUSHUNDEF;
2557 }
131d45a9 2558#if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
375ed12a 2559 /* ensure close-on-exec */
131d45a9
JH		 2560 if ((fd[0] > PL_maxsysfd && fcntl(fd[0], F_SETFD, FD_CLOEXEC) < 0) ||
2561 (fd[1] > PL_maxsysfd && fcntl(fd[1], F_SETFD, FD_CLOEXEC) < 0))
375ed12a 2562 RETPUSHUNDEF;
8d2a6795 2563#endif
a0d0e21e
LW		 2564
2565 RETPUSHYES;
2566#else
cea2e8a9 2567 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW		 2568#endif
2569}
2570
7627e6d0
NC		 2571#ifdef HAS_SOCKET
2572
b1c05ba5
DM		 2573/* also used for: pp_connect() */
2574
a0d0e21e
LW		 2575PP(pp_bind)
2576{
20b7effb 2577 dSP;
7452cf6a 2578 SV * const addrsv = POPs;
349d4f2f
NC		 2579 /* OK, so on what platform does bind modify addr? */
2580 const char *addr;
159b6efe 2581 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2582 IO * const io = GvIOn(gv);
a0d0e21e 2583 STRLEN len;
e0b7b5e2 2584 int op_type;
375ed12a 2585 int fd;
a0d0e21e 2586
8a6c0fcb 2587 if (!IoIFP(io))
a0d0e21e 2588 goto nuts;
375ed12a
JH		 2589 fd = PerlIO_fileno(IoIFP(io));
2590 if (fd < 0)
2591 goto nuts;
a0d0e21e 2592
349d4f2f 2593 addr = SvPV_const(addrsv, len);
e0b7b5e2 2594 op_type = PL_op->op_type;
32b81f04
NC		 2595 TAINT_PROPER(PL_op_desc[op_type]);
2596 if ((op_type == OP_BIND
375ed12a
JH		 2597 ? PerlSock_bind(fd, (struct sockaddr *)addr, len)
2598 : PerlSock_connect(fd, (struct sockaddr *)addr, len))
32b81f04 2599 >= 0)
a0d0e21e
LW		 2600 RETPUSHYES;
2601 else
2602 RETPUSHUNDEF;
2603
7b52d656 2604 nuts:
fbcda526 2605 report_evil_fh(gv);
93189314 2606 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2607 RETPUSHUNDEF;
a0d0e21e
LW		 2608}
2609
2610PP(pp_listen)
2611{
20b7effb 2612 dSP;
7452cf6a 2613 const int backlog = POPi;
159b6efe 2614 GV * const gv = MUTABLE_GV(POPs);
8a6c0fcb 2615 IO * const io = GvIOn(gv);
a0d0e21e 2616
8a6c0fcb 2617 if (!IoIFP(io))
a0d0e21e
LW		 2618 goto nuts;
2619
6ad3d225 2620 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW		 2621 RETPUSHYES;
2622 else
2623 RETPUSHUNDEF;
2624
7b52d656 2625 nuts:
fbcda526 2626 report_evil_fh(gv);
93189314 2627 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2628 RETPUSHUNDEF;
a0d0e21e
LW		 2629}
2630
2631PP(pp_accept)
2632{
20b7effb 2633 dSP; dTARGET;
eb578fdb 2634 IO *nstio;
93d47a36 2635 char namebuf[MAXPATHLEN];
b5afd346 2636#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
93d47a36
JH		 2637 Sock_size_t len = sizeof (struct sockaddr_in);
2638#else
2639 Sock_size_t len = sizeof namebuf;
2640#endif
159b6efe
NC		 2641 GV * const ggv = MUTABLE_GV(POPs);
2642 GV * const ngv = MUTABLE_GV(POPs);
a0d0e21e
LW		 2643 int fd;
2644
8a6c0fcb 2645 IO * const gstio = GvIO(ggv);
a0d0e21e
LW		 2646 if (!gstio || !IoIFP(gstio))
2647 goto nuts;
2648
2649 nstio = GvIOn(ngv);
93d47a36 2650 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
e294cc5d
JH		 2651#if defined(OEMVS)
2652 if (len == 0) {
2653 /* Some platforms indicate zero length when an AF_UNIX client is
2654 * not bound. Simulate a non-zero-length sockaddr structure in
2655 * this case. */
2656 namebuf[0] = 0; /* sun_len */
2657 namebuf[1] = AF_UNIX; /* sun_family */
2658 len = 2;
2659 }
2660#endif
2661
a0d0e21e
LW		 2662 if (fd < 0)
2663 goto badexit;
a70048fb
AB		 2664 if (IoIFP(nstio))
2665 do_close(ngv, FALSE);
460c8493
IZ		 2666 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2667 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2668 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2669 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW		 2670 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2671 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2672 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW		 2673 goto badexit;
2674 }
131d45a9
JH		 2675#if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
2676 /* ensure close-on-exec */
2677 if (fd > PL_maxsysfd && fcntl(fd, F_SETFD, FD_CLOEXEC) < 0)
375ed12a 2678 goto badexit;
8d2a6795 2679#endif
a0d0e21e 2680
381c1bae 2681#ifdef __SCO_VERSION__
93d47a36 2682 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
381c1bae 2683#endif
ed79a026 2684
93d47a36 2685 PUSHp(namebuf, len);
a0d0e21e
LW		 2686 RETURN;
2687
7b52d656 2688 nuts:
fbcda526 2689 report_evil_fh(ggv);
93189314 2690 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2691
7b52d656 2692 badexit:
a0d0e21e
LW		 2693 RETPUSHUNDEF;
2694
a0d0e21e
LW		 2695}
2696
2697PP(pp_shutdown)
2698{
20b7effb 2699 dSP; dTARGET;
7452cf6a 2700 const int how = POPi;
159b6efe 2701 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2702 IO * const io = GvIOn(gv);
a0d0e21e 2703
8a6c0fcb 2704 if (!IoIFP(io))
a0d0e21e
LW		 2705 goto nuts;
2706
6ad3d225 2707 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW		 2708 RETURN;
2709
7b52d656 2710 nuts:
fbcda526 2711 report_evil_fh(gv);
93189314 2712 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2713 RETPUSHUNDEF;
a0d0e21e
LW		 2714}
2715
b1c05ba5
DM		 2716
2717/* also used for: pp_gsockopt() */
2718
a0d0e21e
LW		 2719PP(pp_ssockopt)
2720{
20b7effb 2721 dSP;
7452cf6a 2722 const int optype = PL_op->op_type;
561b68a9 2723 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
7452cf6a
AL		 2724 const unsigned int optname = (unsigned int) POPi;
2725 const unsigned int lvl = (unsigned int) POPi;
159b6efe 2726 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2727 IO * const io = GvIOn(gv);
a0d0e21e 2728 int fd;
1e422769 2729 Sock_size_t len;
a0d0e21e 2730
49225470 2731 if (!IoIFP(io))
a0d0e21e
LW		 2732 goto nuts;
2733
760ac839 2734 fd = PerlIO_fileno(IoIFP(io));
375ed12a
JH		 2735 if (fd < 0)
2736 goto nuts;
a0d0e21e
LW		 2737 switch (optype) {
2738 case OP_GSOCKOPT:
748a9306 2739 SvGROW(sv, 257);
a0d0e21e 2740 (void)SvPOK_only(sv);
748a9306
LW		 2741 SvCUR_set(sv,256);
2742 *SvEND(sv) ='\0';
1e422769 2743 len = SvCUR(sv);
6ad3d225 2744 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2745 goto nuts2;
ee2276e5
JH		 2746#if defined(_AIX)
2747 /* XXX Configure test: does getsockopt set the length properly? */
2748 if (len == 256)
2749 len = sizeof(int);
2750#endif
1e422769 2751 SvCUR_set(sv, len);
748a9306 2752 *SvEND(sv) ='\0';
a0d0e21e
LW		 2753 PUSHs(sv);
2754 break;
2755 case OP_SSOCKOPT: {
1215b447
JH		 2756#if defined(__SYMBIAN32__)
2757# define SETSOCKOPT_OPTION_VALUE_T void *
2758#else
2759# define SETSOCKOPT_OPTION_VALUE_T const char *
2760#endif
2761 /* XXX TODO: We need to have a proper type (a Configure probe,
2762 * etc.) for what the C headers think of the third argument of
2763 * setsockopt(), the option_value read-only buffer: is it
2764 * a "char *", or a "void *", const or not. Some compilers
2765 * don't take kindly to e.g. assuming that "char *" implicitly
2766 * promotes to a "void *", or to explicitly promoting/demoting
2767 * consts to non/vice versa. The "const void *" is the SUS
2768 * definition, but that does not fly everywhere for the above
2769 * reasons. */
2770 SETSOCKOPT_OPTION_VALUE_T buf;
1e422769 2771 int aint;
2772 if (SvPOKp(sv)) {
2d8e6c8d 2773 STRLEN l;
1215b447 2774 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2d8e6c8d 2775 len = l;
1e422769 2776 }
56ee1660 2777 else {
a0d0e21e 2778 aint = (int)SvIV(sv);
1215b447 2779 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
a0d0e21e
LW		 2780 len = sizeof(int);
2781 }
6ad3d225 2782 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2783 goto nuts2;
3280af22 2784 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 2785 }
2786 break;
2787 }
2788 RETURN;
2789
7b52d656 2790 nuts:
fbcda526 2791 report_evil_fh(gv);
93189314 2792 SETERRNO(EBADF,SS_IVCHAN);
7b52d656 2793 nuts2:
a0d0e21e
LW		 2794 RETPUSHUNDEF;
2795
a0d0e21e
LW		 2796}
2797
b1c05ba5
DM		 2798
2799/* also used for: pp_getsockname() */
2800
a0d0e21e
LW		 2801PP(pp_getpeername)
2802{
20b7effb 2803 dSP;
7452cf6a 2804 const int optype = PL_op->op_type;
159b6efe 2805 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2806 IO * const io = GvIOn(gv);
7452cf6a 2807 Sock_size_t len;
a0d0e21e
LW		 2808 SV *sv;
2809 int fd;
a0d0e21e 2810
49225470 2811 if (!IoIFP(io))
a0d0e21e
LW		 2812 goto nuts;
2813
561b68a9 2814 sv = sv_2mortal(newSV(257));
748a9306 2815 (void)SvPOK_only(sv);
1e422769 2816 len = 256;
2817 SvCUR_set(sv, len);
748a9306 2818 *SvEND(sv) ='\0';
760ac839 2819 fd = PerlIO_fileno(IoIFP(io));
375ed12a
JH		 2820 if (fd < 0)
2821 goto nuts;
a0d0e21e
LW		 2822 switch (optype) {
2823 case OP_GETSOCKNAME:
6ad3d225 2824 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW		 2825 goto nuts2;
2826 break;
2827 case OP_GETPEERNAME:
6ad3d225 2828 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2829 goto nuts2;
490ab354
JH		 2830#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2831 {
2832 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";
2833 /* If the call succeeded, make sure we don't have a zeroed port/addr */
349d4f2f 2834 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2fbb330f 2835 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
490ab354 2836 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2837 goto nuts2;
490ab354
JH		 2838 }
2839 }
2840#endif
a0d0e21e
LW		 2841 break;
2842 }
13826f2c
CS		 2843#ifdef BOGUS_GETNAME_RETURN
2844 /* Interactive Unix, getpeername() and getsockname()
2845 does not return valid namelen */
1e422769 2846 if (len == BOGUS_GETNAME_RETURN)
2847 len = sizeof(struct sockaddr);
13826f2c 2848#endif
1e422769 2849 SvCUR_set(sv, len);
748a9306 2850 *SvEND(sv) ='\0';
a0d0e21e
LW		 2851 PUSHs(sv);
2852 RETURN;
2853
7b52d656 2854 nuts:
fbcda526 2855 report_evil_fh(gv);
93189314 2856 SETERRNO(EBADF,SS_IVCHAN);
7b52d656 2857 nuts2:
a0d0e21e 2858 RETPUSHUNDEF;
7627e6d0 2859}
a0d0e21e 2860
a0d0e21e 2861#endif
a0d0e21e
LW		 2862
2863/* Stat calls. */
2864
b1c05ba5
DM		 2865/* also used for: pp_lstat() */
2866
a0d0e21e
LW		 2867PP(pp_stat)
2868{
39644a26 2869 dSP;
10edeb5d 2870 GV *gv = NULL;
55dd8d50 2871 IO *io = NULL;
1c23e2bd 2872 U8 gimme;
a0d0e21e 2873 I32 max = 13;
109c43ed 2874 SV* sv;
a0d0e21e 2875
109c43ed
FC		 2876 if (PL_op->op_flags & OPf_REF ? (gv = cGVOP_gv, 1)
2877 : !!(sv=POPs, gv = MAYBE_DEREF_GV(sv))) {
8a4e5b40 2878 if (PL_op->op_type == OP_LSTAT) {
5d3e98de 2879 if (gv != PL_defgv) {
5d329e6e 2880 do_fstat_warning_check:
a2a5de95 2881 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
93fad930
FC		 2882 "lstat() on filehandle%s%"SVf,
2883 gv ? " " : "",
2884 SVfARG(gv
bf29d05f
BF		 2885 ? sv_2mortal(newSVhek(GvENAME_HEK(gv)))
2886 : &PL_sv_no));
5d3e98de 2887 } else if (PL_laststype != OP_LSTAT)
b042df57 2888 /* diag_listed_as: The stat preceding %s wasn't an lstat */
8a4e5b40 2889 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
8a4e5b40
DD		 2890 }
2891
2dd78f96 2892 if (gv != PL_defgv) {
b8413ac3 2893 bool havefp;
0d5064f1 2894 do_fstat_have_io:
b8413ac3 2895 havefp = FALSE;
3280af22 2896 PL_laststype = OP_STAT;
0d5064f1 2897 PL_statgv = gv ? gv : (GV *)io;
60e13354 2898 SvPVCLEAR(PL_statname);
5228a96c 2899 if(gv) {
ad02613c 2900 io = GvIO(gv);
0d5064f1
FC		 2901 }
2902 if (io) {
5228a96c 2903 if (IoIFP(io)) {
375ed12a
JH		 2904 int fd = PerlIO_fileno(IoIFP(io));
2905 if (fd < 0) {
2906 PL_laststatval = -1;
2907 SETERRNO(EBADF,RMS_IFI);
2908 } else {
2909 PL_laststatval = PerlLIO_fstat(fd, &PL_statcache);
2910 havefp = TRUE;
2911 }
5228a96c 2912 } else if (IoDIRP(io)) {
5228a96c 2913 PL_laststatval =
3497a01f 2914 PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache);
8080e3c8 2915 havefp = TRUE;
5228a96c
SP		 2916 } else {
2917 PL_laststatval = -1;
2918 }
5228a96c 2919 }
05bb32d2 2920 else PL_laststatval = -1;
daa30a68 2921 if (PL_laststatval < 0 && !havefp) report_evil_fh(gv);
5228a96c
SP		 2922 }
2923
9ddeeac9 2924 if (PL_laststatval < 0) {
a0d0e21e 2925 max = 0;
9ddeeac9 2926 }
a0d0e21e
LW		 2927 }
2928 else {
7cb3f959 2929 const char *file;
109c43ed 2930 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2931 io = MUTABLE_IO(SvRV(sv));
ad02613c
SP		 2932 if (PL_op->op_type == OP_LSTAT)
2933 goto do_fstat_warning_check;
2934 goto do_fstat_have_io;
2935 }
2936
4bac9ae4 2937 SvTAINTED_off(PL_statname); /* previous tainting irrelevant */
109c43ed 2938 sv_setpv(PL_statname, SvPV_nomg_const_nolen(sv));
a0714e2c 2939 PL_statgv = NULL;
533c011a 2940 PL_laststype = PL_op->op_type;
7cb3f959 2941 file = SvPV_nolen_const(PL_statname);
533c011a 2942 if (PL_op->op_type == OP_LSTAT)
7cb3f959 2943 PL_laststatval = PerlLIO_lstat(file, &PL_statcache);
a0d0e21e 2944 else
7cb3f959 2945 PL_laststatval = PerlLIO_stat(file, &PL_statcache);
3280af22 2946 if (PL_laststatval < 0) {
7cb3f959 2947 if (ckWARN(WARN_NEWLINE) && should_warn_nl(file)) {
5d37acd6
DM		 2948 /* PL_warn_nl is constant */
2949 GCC_DIAG_IGNORE(-Wformat-nonliteral);
9014280d 2950 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
5d37acd6
DM		 2951 GCC_DIAG_RESTORE;
2952 }
a0d0e21e
LW		 2953 max = 0;
2954 }
2955 }
2956
54310121 2957 gimme = GIMME_V;
2958 if (gimme != G_ARRAY) {
2959 if (gimme != G_VOID)
2960 XPUSHs(boolSV(max));
2961 RETURN;
a0d0e21e
LW		 2962 }
2963 if (max) {
36477c24 2964 EXTEND(SP, max);
2965 EXTEND_MORTAL(max);
6e449a3a 2966 mPUSHi(PL_statcache.st_dev);
8d8cba88
TC		 2967#if ST_INO_SIZE > IVSIZE
2968 mPUSHn(PL_statcache.st_ino);
2969#else
2970# if ST_INO_SIGN <= 0
6e449a3a 2971 mPUSHi(PL_statcache.st_ino);
8d8cba88
TC		 2972# else
2973 mPUSHu(PL_statcache.st_ino);
2974# endif
2975#endif
6e449a3a
MHM		 2976 mPUSHu(PL_statcache.st_mode);
2977 mPUSHu(PL_statcache.st_nlink);
dfff4baf
BF		 2978
2979 sv_setuid(PUSHmortal, PL_statcache.st_uid);
2980 sv_setgid(PUSHmortal, PL_statcache.st_gid);
2981
cbdc8872 2982#ifdef USE_STAT_RDEV
6e449a3a 2983 mPUSHi(PL_statcache.st_rdev);
cbdc8872 2984#else
84bafc02 2985 PUSHs(newSVpvs_flags("", SVs_TEMP));
cbdc8872 2986#endif
146174a9 2987#if Off_t_size > IVSIZE
6e449a3a 2988 mPUSHn(PL_statcache.st_size);
146174a9 2989#else
6e449a3a 2990 mPUSHi(PL_statcache.st_size);
146174a9 2991#endif
cbdc8872 2992#ifdef BIG_TIME
6e449a3a
MHM		 2993 mPUSHn(PL_statcache.st_atime);
2994 mPUSHn(PL_statcache.st_mtime);
2995 mPUSHn(PL_statcache.st_ctime);
cbdc8872 2996#else
6e449a3a
MHM		 2997 mPUSHi(PL_statcache.st_atime);
2998 mPUSHi(PL_statcache.st_mtime);
2999 mPUSHi(PL_statcache.st_ctime);
cbdc8872 3000#endif
a0d0e21e 3001#ifdef USE_STAT_BLOCKS
6e449a3a
MHM		 3002 mPUSHu(PL_statcache.st_blksize);
3003 mPUSHu(PL_statcache.st_blocks);
a0d0e21e 3004#else
84bafc02
NC		 3005 PUSHs(newSVpvs_flags("", SVs_TEMP));
3006 PUSHs(newSVpvs_flags("", SVs_TEMP));
a0d0e21e
LW		 3007#endif
3008 }
3009 RETURN;
3010}
3011
6c48f025
NC		 3012/* All filetest ops avoid manipulating the perl stack pointer in their main
3013 bodies (since commit d2c4d2d1e22d3125), and return using either
3014 S_ft_return_false() or S_ft_return_true(). These two helper functions are
3015 the only two which manipulate the perl stack. To ensure that no stack
3016 manipulation macros are used, the filetest ops avoid defining a local copy
3017 of the stack pointer with dSP. */
3018
8db8f6b6
FC		 3019/* If the next filetest is stacked up with this one
3020 (PL_op->op_private & OPpFT_STACKING), we leave
3021 the original argument on the stack for success,
3022 and skip the stacked operators on failure.
3023 The next few macros/functions take care of this.
3024*/
3025
3026static OP *
9a6b02e8 3027S_ft_return_false(pTHX_ SV *ret) {
8db8f6b6 3028 OP *next = NORMAL;
697f9d37
NC		 3029 dSP;
3030
226b9201 3031 if (PL_op->op_flags & OPf_REF) XPUSHs(ret);
8db8f6b6
FC		 3032 else SETs(ret);
3033 PUTBACK;
697f9d37 3034
9a6b02e8
NC		 3035 if (PL_op->op_private & OPpFT_STACKING) {
3036 while (OP_IS_FILETEST(next->op_type)
3037 && next->op_private & OPpFT_STACKED)
3038 next = next->op_next;
3039 }
8db8f6b6
FC		 3040 return next;
3041}
3042
07ed4d4b
NC		 3043PERL_STATIC_INLINE OP *
3044S_ft_return_true(pTHX_ SV *ret) {
3045 dSP;
3046 if (PL_op->op_flags & OPf_REF)
3047 XPUSHs(PL_op->op_private & OPpFT_STACKING ? (SV *)cGVOP_gv : (ret));
3048 else if (!(PL_op->op_private & OPpFT_STACKING))
3049 SETs(ret);
3050 PUTBACK;
3051 return NORMAL;
3052}
8db8f6b6 3053
48d023d6
NC		 3054#define FT_RETURNNO return S_ft_return_false(aTHX_ &PL_sv_no)
3055#define FT_RETURNUNDEF return S_ft_return_false(aTHX_ &PL_sv_undef)
3056#define FT_RETURNYES return S_ft_return_true(aTHX_ &PL_sv_yes)
8db8f6b6 3057
6f1401dc 3058#define tryAMAGICftest_MG(chr) STMT_START { \
d2f67720 3059 if ( (SvFLAGS(*PL_stack_sp) & (SVf_ROK|SVs_GMG)) \
8db8f6b6
FC		 3060 && PL_op->op_flags & OPf_KIDS) { \
3061 OP *next = S_try_amagic_ftest(aTHX_ chr); \
3062 if (next) return next; \
3063 } \
6f1401dc
DM		 3064 } STMT_END
3065
8db8f6b6 3066STATIC OP *
6f1401dc 3067S_try_amagic_ftest(pTHX_ char chr) {
d2f67720 3068 SV *const arg = *PL_stack_sp;
6f1401dc
DM		 3069
3070 assert(chr != '?');
c5780028 3071 if (!(PL_op->op_private & OPpFT_STACKING)) SvGETMAGIC(arg);
6f1401dc 3072
d2f67720 3073 if (SvAMAGIC(arg))
6f1401dc
DM		 3074 {
3075 const char tmpchr = chr;
6f1401dc
DM		 3076 SV * const tmpsv = amagic_call(arg,
3077 newSVpvn_flags(&tmpchr, 1, SVs_TEMP),
3078 ftest_amg, AMGf_unary);
3079
3080 if (!tmpsv)
8db8f6b6 3081 return NULL;
6f1401dc 3082
48d023d6
NC		 3083 return SvTRUE(tmpsv)
3084 ? S_ft_return_true(aTHX_ tmpsv) : S_ft_return_false(aTHX_ tmpsv);
6f1401dc 3085 }
8db8f6b6 3086 return NULL;
6f1401dc
DM		 3087}
3088
3089
b1c05ba5
DM		 3090/* also used for: pp_fteexec() pp_fteread() pp_ftewrite() pp_ftrexec()
3091 * pp_ftrwrite() */
3092
a0d0e21e
LW		 3093PP(pp_ftrread)
3094{
9cad6237 3095 I32 result;
af9e49b4 3096 /* Not const, because things tweak this below. Not bool, because there's
f3574cc6 3097 no guarantee that OPpFT_ACCESS is <= CHAR_MAX */
af9e49b4
NC		 3098#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
3099 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
3100 /* Giving some sort of initial value silences compilers. */
3101# ifdef R_OK
3102 int access_mode = R_OK;
3103# else
3104 int access_mode = 0;
3105# endif
5ff3f7a4 3106#else
af9e49b4
NC		 3107 /* access_mode is never used, but leaving use_access in makes the
3108 conditional compiling below much clearer. */
3109 I32 use_access = 0;
5ff3f7a4 3110#endif
2dcac756 3111 Mode_t stat_mode = S_IRUSR;
a0d0e21e 3112
af9e49b4 3113 bool effective = FALSE;
07fe7c6a 3114 char opchar = '?';
af9e49b4 3115
7fb13887
BM		 3116 switch (PL_op->op_type) {
3117 case OP_FTRREAD: opchar = 'R'; break;
3118 case OP_FTRWRITE: opchar = 'W'; break;
3119 case OP_FTREXEC: opchar = 'X'; break;
3120 case OP_FTEREAD: opchar = 'r'; break;
3121 case OP_FTEWRITE: opchar = 'w'; break;
3122 case OP_FTEEXEC: opchar = 'x'; break;
3123 }
6f1401dc 3124 tryAMAGICftest_MG(opchar);
7fb13887 3125
af9e49b4
NC		 3126 switch (PL_op->op_type) {
3127 case OP_FTRREAD:
3128#if !(defined(HAS_ACCESS) && defined(R_OK))
3129 use_access = 0;
3130#endif
3131 break;
3132
3133 case OP_FTRWRITE:
5ff3f7a4 3134#if defined(HAS_ACCESS) && defined(W_OK)
af9e49b4 3135 access_mode = W_OK;
5ff3f7a4 3136#else
af9e49b4 3137 use_access = 0;
5ff3f7a4 3138#endif
af9e49b4
NC		 3139 stat_mode = S_IWUSR;
3140 break;
a0d0e21e 3141
af9e49b4 3142 case OP_FTREXEC:
5ff3f7a4 3143#if defined(HAS_ACCESS) && defined(X_OK)
af9e49b4 3144 access_mode = X_OK;
5ff3f7a4 3145#else
af9e49b4 3146 use_access = 0;
5ff3f7a4 3147#endif
af9e49b4
NC		 3148 stat_mode = S_IXUSR;
3149 break;
a0d0e21e 3150
af9e49b4 3151 case OP_FTEWRITE:
faee0e31 3152#ifdef PERL_EFF_ACCESS
af9e49b4 3153 access_mode = W_OK;
5ff3f7a4 3154#endif
af9e49b4 3155 stat_mode = S_IWUSR;
924ba076 3156 /* FALLTHROUGH */
a0d0e21e 3157
af9e49b4
NC		 3158 case OP_FTEREAD:
3159#ifndef PERL_EFF_ACCESS
3160 use_access = 0;
3161#endif
3162 effective = TRUE;
3163 break;
3164
af9e49b4 3165 case OP_FTEEXEC:
faee0e31 3166#ifdef PERL_EFF_ACCESS
b376053d 3167 access_mode = X_OK;
5ff3f7a4 3168#else
af9e49b4 3169 use_access = 0;
5ff3f7a4 3170#endif
af9e49b4
NC		 3171 stat_mode = S_IXUSR;
3172 effective = TRUE;
3173 break;
3174 }
a0d0e21e 3175
af9e49b4
NC		 3176 if (use_access) {
3177#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
d2f67720 3178 const char *name = SvPV_nolen(*PL_stack_sp);
af9e49b4
NC		 3179 if (effective) {
3180# ifdef PERL_EFF_ACCESS
3181 result = PERL_EFF_ACCESS(name, access_mode);
3182# else
3183 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
3184 OP_NAME(PL_op));
3185# endif
3186 }
3187 else {
3188# ifdef HAS_ACCESS
3189 result = access(name, access_mode);
3190# else
3191 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
3192# endif
3193 }
5ff3f7a4 3194 if (result == 0)
d2c4d2d1 3195 FT_RETURNYES;
5ff3f7a4 3196 if (result < 0)
d2c4d2d1
FC		 3197 FT_RETURNUNDEF;
3198 FT_RETURNNO;
af9e49b4 3199#endif
22865c03 3200 }
af9e49b4 3201
40c852de 3202 result = my_stat_flags(0);
a0d0e21e 3203 if (result < 0)
8db8f6b6 3204 FT_RETURNUNDEF;
af9e49b4 3205 if (cando(stat_mode, effective, &PL_statcache))
8db8f6b6
FC		 3206 FT_RETURNYES;
3207 FT_RETURNNO;
a0d0e21e
LW		 3208}
3209
b1c05ba5
DM		 3210
3211/* also used for: pp_ftatime() pp_ftctime() pp_ftmtime() pp_ftsize() */
3212
a0d0e21e
LW		 3213PP(pp_ftis)
3214{
fbb0b3b3 3215 I32 result;
d7f0a2f4 3216 const int op_type = PL_op->op_type;
07fe7c6a 3217 char opchar = '?';
07fe7c6a
BM		 3218
3219 switch (op_type) {
3220 case OP_FTIS: opchar = 'e'; break;
3221 case OP_FTSIZE: opchar = 's'; break;
3222 case OP_FTMTIME: opchar = 'M'; break;
3223 case OP_FTCTIME: opchar = 'C'; break;
3224 case OP_FTATIME: opchar = 'A'; break;
3225 }
6f1401dc 3226 tryAMAGICftest_MG(opchar);
07fe7c6a 3227
40c852de 3228 result = my_stat_flags(0);
a0d0e21e 3229 if (result < 0)
8db8f6b6 3230 FT_RETURNUNDEF;
d7f0a2f4 3231 if (op_type == OP_FTIS)
8db8f6b6 3232 FT_RETURNYES;
957b0e1d 3233 {
d7f0a2f4
NC		 3234 /* You can't dTARGET inside OP_FTIS, because you'll get
3235 "panic: pad_sv po" - the op is not flagged to have a target. */
957b0e1d 3236 dTARGET;
d7f0a2f4 3237 switch (op_type) {
957b0e1d
NC		 3238 case OP_FTSIZE:
3239#if Off_t_size > IVSIZE
8db8f6b6 3240 sv_setnv(TARG, (NV)PL_statcache.st_size);
957b0e1d 3241#else
8db8f6b6 3242 sv_setiv(TARG, (IV)PL_statcache.st_size);
957b0e1d
NC		 3243#endif
3244 break;
3245 case OP_FTMTIME:
8db8f6b6
FC		 3246 sv_setnv(TARG,
3247 ((NV)PL_basetime - PL_statcache.st_mtime) / 86400.0 );
957b0e1d
NC		 3248 break;
3249 case OP_FTATIME:
8db8f6b6
FC		 3250 sv_setnv(TARG,
3251 ((NV)PL_basetime - PL_statcache.st_atime) / 86400.0 );
957b0e1d
NC		 3252 break;
3253 case OP_FTCTIME:
8db8f6b6
FC		 3254 sv_setnv(TARG,
3255 ((NV)PL_basetime - PL_statcache.st_ctime) / 86400.0 );
957b0e1d
NC		 3256 break;
3257 }
8db8f6b6 3258 SvSETMAGIC(TARG);
48d023d6
NC		 3259 return SvTRUE_nomg(TARG)
3260 ? S_ft_return_true(aTHX_ TARG) : S_ft_return_false(aTHX_ TARG);
957b0e1d 3261 }
a0d0e21e
LW		 3262}
3263
b1c05ba5
DM		 3264
3265/* also used for: pp_ftblk() pp_ftchr() pp_ftdir() pp_fteowned()
3266 * pp_ftfile() pp_ftpipe() pp_ftsgid() pp_ftsock()
3267 * pp_ftsuid() pp_ftsvtx() pp_ftzero() */
3268
a0d0e21e
LW		 3269PP(pp_ftrowned)
3270{
fbb0b3b3 3271 I32 result;
07fe7c6a 3272 char opchar = '?';
17ad201a 3273
7fb13887
BM		 3274 switch (PL_op->op_type) {
3275 case OP_FTROWNED: opchar = 'O'; break;
3276 case OP_FTEOWNED: opchar = 'o'; break;
3277 case OP_FTZERO: opchar = 'z'; break;
3278 case OP_FTSOCK: opchar = 'S'; break;
3279 case OP_FTCHR: opchar = 'c'; break;
3280 case OP_FTBLK: opchar = 'b'; break;
3281 case OP_FTFILE: opchar = 'f'; break;
3282 case OP_FTDIR: opchar = 'd'; break;
3283 case OP_FTPIPE: opchar = 'p'; break;
3284 case OP_FTSUID: opchar = 'u'; break;
3285 case OP_FTSGID: opchar = 'g'; break;
3286 case OP_FTSVTX: opchar = 'k'; break;
3287 }
6f1401dc 3288 tryAMAGICftest_MG(opchar);
7fb13887 3289
17ad201a
NC		 3290 /* I believe that all these three are likely to be defined on most every
3291 system these days. */
3292#ifndef S_ISUID
c410dd6a 3293 if(PL_op->op_type == OP_FTSUID) {
8db8f6b6 3294 FT_RETURNNO;
c410dd6a 3295 }
17ad201a
NC		 3296#endif
3297#ifndef S_ISGID
c410dd6a 3298 if(PL_op->op_type == OP_FTSGID) {
8db8f6b6 3299 FT_RETURNNO;
c410dd6a 3300 }
17ad201a
NC		 3301#endif
3302#ifndef S_ISVTX
c410dd6a 3303 if(PL_op->op_type == OP_FTSVTX) {
8db8f6b6 3304 FT_RETURNNO;
c410dd6a 3305 }
17ad201a
NC		 3306#endif
3307
40c852de 3308 result = my_stat_flags(0);
a0d0e21e 3309 if (result < 0)
8db8f6b6 3310 FT_RETURNUNDEF;
f1cb2d48
NC		 3311 switch (PL_op->op_type) {
3312 case OP_FTROWNED:
985213f2 3313 if (PL_statcache.st_uid == PerlProc_getuid())
8db8f6b6 3314 FT_RETURNYES;
f1cb2d48
NC		 3315 break;
3316 case OP_FTEOWNED:
985213f2 3317 if (PL_statcache.st_uid == PerlProc_geteuid())
8db8f6b6 3318 FT_RETURNYES;
f1cb2d48
NC		 3319 break;
3320 case OP_FTZERO:
3321 if (PL_statcache.st_size == 0)
8db8f6b6 3322 FT_RETURNYES;
f1cb2d48
NC		 3323 break;
3324 case OP_FTSOCK:
3325 if (S_ISSOCK(PL_statcache.st_mode))
8db8f6b6 3326 FT_RETURNYES;
f1cb2d48
NC		 3327 break;
3328 case OP_FTCHR:
3329 if (S_ISCHR(PL_statcache.st_mode))
8db8f6b6 3330 FT_RETURNYES;
f1cb2d48
NC		 3331 break;
3332 case OP_FTBLK:
3333 if (S_ISBLK(PL_statcache.st_mode))
8db8f6b6 3334 FT_RETURNYES;
f1cb2d48
NC		 3335 break;
3336 case OP_FTFILE:
3337 if (S_ISREG(PL_statcache.st_mode))
8db8f6b6 3338 FT_RETURNYES;
f1cb2d48
NC		 3339 break;
3340 case OP_FTDIR:
3341 if (S_ISDIR(PL_statcache.st_mode))
8db8f6b6 3342 FT_RETURNYES;
f1cb2d48
NC		 3343 break;
3344 case OP_FTPIPE:
3345 if (S_ISFIFO(PL_statcache.st_mode))
8db8f6b6 3346 FT_RETURNYES;
f1cb2d48 3347 break;
a0d0e21e 3348#ifdef S_ISUID
17ad201a
NC		 3349 case OP_FTSUID:
3350 if (PL_statcache.st_mode & S_ISUID)
8db8f6b6 3351 FT_RETURNYES;
17ad201a 3352 break;
a0d0e21e 3353#endif
a0d0e21e 3354#ifdef S_ISGID
17ad201a
NC		 3355 case OP_FTSGID:
3356 if (PL_statcache.st_mode & S_ISGID)
8db8f6b6 3357 FT_RETURNYES;
17ad201a
NC		 3358 break;
3359#endif
3360#ifdef S_ISVTX
3361 case OP_FTSVTX:
3362 if (PL_statcache.st_mode & S_ISVTX)
8db8f6b6 3363 FT_RETURNYES;
17ad201a 3364 break;
a0d0e21e 3365#endif
17ad201a 3366 }
8db8f6b6 3367 FT_RETURNNO;
a0d0e21e
LW		 3368}
3369
17ad201a 3370PP(pp_ftlink)
a0d0e21e 3371{
500ff13f 3372 I32 result;
07fe7c6a 3373
6f1401dc 3374 tryAMAGICftest_MG('l');
40c852de 3375 result = my_lstat_flags(0);
500ff13f 3376
a0d0e21e 3377 if (result < 0)
8db8f6b6 3378 FT_RETURNUNDEF;
17ad201a 3379 if (S_ISLNK(PL_statcache.st_mode))
8db8f6b6
FC		 3380 FT_RETURNYES;
3381 FT_RETURNNO;
a0d0e21e
LW		 3382}
3383
3384PP(pp_fttty)
3385{
a0d0e21e
LW		 3386 int fd;
3387 GV *gv;
0784aae0 3388 char *name = NULL;
40c852de 3389 STRLEN namelen;
22ff3130 3390 UV uv;
fb73857a 3391
6f1401dc 3392 tryAMAGICftest_MG('t');
07fe7c6a 3393
533c011a 3394 if (PL_op->op_flags & OPf_REF)
146174a9 3395 gv = cGVOP_gv;
e5e154d2 3396 else {
d2f67720 3397 SV *tmpsv = *PL_stack_sp;
e5e154d2 3398 if (!(gv = MAYBE_DEREF_GV_nomg(tmpsv))) {
40c852de
DM		 3399 name = SvPV_nomg(tmpsv, namelen);
3400 gv = gv_fetchpvn_flags(name, namelen, SvUTF8(tmpsv), SVt_PVIO);
e5e154d2 3401 }
40c852de 3402 }
fb73857a 3403
a0d0e21e 3404 if (GvIO(gv) && IoIFP(GvIOp(gv)))
760ac839 3405 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
22ff3130
HS		 3406 else if (name && isDIGIT(*name) && grok_atoUV(name, &uv, NULL) && uv <= PERL_INT_MAX)
3407 fd = (int)uv;
a0d0e21e 3408 else
8db8f6b6 3409 FT_RETURNUNDEF;
375ed12a
JH		 3410 if (fd < 0) {
3411 SETERRNO(EBADF,RMS_IFI);
3412 FT_RETURNUNDEF;
3413 }
6ad3d225 3414 if (PerlLIO_isatty(fd))
8db8f6b6
FC		 3415 FT_RETURNYES;
3416 FT_RETURNNO;
a0d0e21e
LW		 3417}
3418
b1c05ba5
DM		 3419
3420/* also used for: pp_ftbinary() */
3421
a0d0e21e
LW		 3422PP(pp_fttext)
3423{
a0d0e21e 3424 I32 i;
b66f3475 3425 SSize_t len;
a0d0e21e
LW		 3426 I32 odd = 0;
3427 STDCHAR tbuf[512];
eb578fdb
KW		 3428 STDCHAR *s;
3429 IO *io;
3430 SV *sv = NULL;
5f05dabc 3431 GV *gv;
146174a9 3432 PerlIO *fp;
a0d0e21e 3433
6f1401dc 3434 tryAMAGICftest_MG(PL_op->op_type == OP_FTTEXT ? 'T' : 'B');
07fe7c6a 3435
533c011a 3436 if (PL_op->op_flags & OPf_REF)
146174a9 3437 gv = cGVOP_gv;
d2c4d2d1 3438 else if ((PL_op->op_private & (OPpFT_STACKED|OPpFT_AFTER_t))
8db8f6b6 3439 == OPpFT_STACKED)
ba8182f8 3440 gv = PL_defgv;
d2c4d2d1 3441 else {
d2f67720 3442 sv = *PL_stack_sp;
d2c4d2d1 3443 gv = MAYBE_DEREF_GV_nomg(sv);
8db8f6b6 3444 }
5f05dabc 3445
3446 if (gv) {
3280af22
NIS		 3447 if (gv == PL_defgv) {
3448 if (PL_statgv)
bd5f6c01
FC		 3449 io = SvTYPE(PL_statgv) == SVt_PVIO
3450 ? (IO *)PL_statgv
3451 : GvIO(PL_statgv);
a0d0e21e 3452 else {
a0d0e21e
LW		 3453 goto really_filename;
3454 }
3455 }
3456 else {
3280af22 3457 PL_statgv = gv;
60e13354 3458 SvPVCLEAR(PL_statname);
3280af22 3459 io = GvIO(PL_statgv);
a0d0e21e 3460 }
eb4c377a 3461 PL_laststatval = -1;
21a64c3e 3462 PL_laststype = OP_STAT;
a0d0e21e 3463 if (io && IoIFP(io)) {
375ed12a 3464 int fd;
5f05dabc 3465 if (! PerlIO_has_base(IoIFP(io)))
cea2e8a9 3466 DIE(aTHX_ "-T and -B not implemented on filehandles");
375ed12a
JH		 3467 fd = PerlIO_fileno(IoIFP(io));
3468 if (fd < 0) {
3469 SETERRNO(EBADF,RMS_IFI);
3470 FT_RETURNUNDEF;
3471 }
3472 PL_laststatval = PerlLIO_fstat(fd, &PL_statcache);
3280af22 3473 if (PL_laststatval < 0)
8db8f6b6 3474 FT_RETURNUNDEF;
9cbac4c7 3475 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
533c011a 3476 if (PL_op->op_type == OP_FTTEXT)
8db8f6b6 3477 FT_RETURNNO;
a0d0e21e 3478 else
8db8f6b6 3479 FT_RETURNYES;
9cbac4c7 3480 }
a20bf0c3 3481 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
760ac839 3482 i = PerlIO_getc(IoIFP(io));
a0d0e21e 3483 if (i != EOF)
760ac839 3484 (void)PerlIO_ungetc(IoIFP(io),i);
bd47baf2
NT		 3485 else
3486 /* null file is anything */
3487 FT_RETURNYES;
a0d0e21e 3488 }
a20bf0c3
JH		 3489 len = PerlIO_get_bufsiz(IoIFP(io));
3490 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
760ac839
LW		 3491 /* sfio can have large buffers - limit to 512 */
3492 if (len > 512)
3493 len = 512;
a0d0e21e
LW		 3494 }
3495 else {
2ad48547 3496 SETERRNO(EBADF,RMS_IFI);
3f12cff4 3497 report_evil_fh(gv);
93189314 3498 SETERRNO(EBADF,RMS_IFI);
8db8f6b6 3499 FT_RETURNUNDEF;
a0d0e21e
LW		 3500 }
3501 }
3502 else {
7cb3f959 3503 const char *file;
375ed12a 3504 int fd;
7cb3f959 3505
9959d439 3506 assert(sv);
81e9306f 3507 sv_setpv(PL_statname, SvPV_nomg_const_nolen(sv));
5f05dabc 3508 really_filename:
7cb3f959 3509 file = SvPVX_const(PL_statname);
a0714e2c 3510 PL_statgv = NULL;
7cb3f959 3511 if (!(fp = PerlIO_open(file, "r"))) {
ad2d99e3
FC		 3512 if (!gv) {
3513 PL_laststatval = -1;
3514 PL_laststype = OP_STAT;
3515 }
7cb3f959 3516 if (ckWARN(WARN_NEWLINE) && should_warn_nl(file)) {
5d37acd6
DM		 3517 /* PL_warn_nl is constant */
3518 GCC_DIAG_IGNORE(-Wformat-nonliteral);
9014280d 3519 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
5d37acd6
DM		 3520 GCC_DIAG_RESTORE;
3521 }
8db8f6b6 3522 FT_RETURNUNDEF;
a0d0e21e 3523 }
ad2d99e3 3524 PL_laststype = OP_STAT;
375ed12a
JH		 3525 fd = PerlIO_fileno(fp);
3526 if (fd < 0) {
3527 (void)PerlIO_close(fp);
3528 SETERRNO(EBADF,RMS_IFI);
3529 FT_RETURNUNDEF;
3530 }
3531 PL_laststatval = PerlLIO_fstat(fd, &PL_statcache);
146174a9 3532 if (PL_laststatval < 0) {
3f6b66c1 3533 dSAVE_ERRNO;
146174a9 3534 (void)PerlIO_close(fp);
3f6b66c1 3535 RESTORE_ERRNO;
8db8f6b6 3536 FT_RETURNUNDEF;
146174a9 3537 }
bd61b366 3538 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, NULL);
146174a9
CB		 3539 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3540 (void)PerlIO_close(fp);
a0d0e21e 3541 if (len <= 0) {
533c011a 3542 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
8db8f6b6
FC		 3543 FT_RETURNNO; /* special case NFS directories */
3544 FT_RETURNYES; /* null file is anything */
a0d0e21e
LW		 3545 }
3546 s = tbuf;
3547 }
3548
3549 /* now scan s to look for textiness */
3550
146174a9
CB		 3551#if defined(DOSISH) || defined(USEMYBINMODE)
3552 /* ignore trailing ^Z on short files */
58c0efa5 3553 if (len && len < (I32)sizeof(tbuf) && tbuf[len-1] == 26)
146174a9
CB		 3554 --len;
3555#endif
3556
f13c8ddb 3557 assert(len);
c5f058df 3558 if (! is_utf8_invariant_string((U8 *) s, len)) {
f13c8ddb 3559
9f10db87 3560 /* Here contains a variant under UTF-8 . See if the entire string is
8bc127bf
KW		 3561 * UTF-8. */
3562 if (is_utf8_fixed_width_buf_flags((U8 *) s, len, 0)) {
f13c8ddb
KW		 3563 if (PL_op->op_type == OP_FTTEXT) {
3564 FT_RETURNYES;
3565 }
3566 else {
3567 FT_RETURNNO;
3568 }
3569 }
3570 }
3571
3572 /* Here, is not UTF-8 or is entirely ASCII. Look through the buffer for
3573 * things that wouldn't be in ASCII text or rich ASCII text. Count these
3574 * in 'odd' */
a0d0e21e
LW		 3575 for (i = 0; i < len; i++, s++) {
3576 if (!*s) { /* null never allowed in text */
3577 odd += len;
3578 break;
3579 }
130c5df3 3580#ifdef USE_LOCALE_CTYPE
f13c8ddb
KW		 3581 if (IN_LC_RUNTIME(LC_CTYPE)) {
3582 if ( isPRINT_LC(*s) || isSPACE_LC(*s)) {
b3f66c68 3583 continue;
f13c8ddb
KW		 3584 }
3585 }
3586 else
3587#endif
3588 if (isPRINT_A(*s)
3589 /* VT occurs so rarely in text, that we consider it odd */
3590 || (isSPACE_A(*s) && *s != VT_NATIVE)
3591
3592 /* But there is a fair amount of backspaces and escapes in
3593 * some text */
3594 || *s == '\b'
3595 || *s == ESC_NATIVE)
3596 {
3597 continue;
3598 }
3599 odd++;
a0d0e21e
LW		 3600 }
3601
533c011a 3602 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
8db8f6b6 3603 FT_RETURNNO;
a0d0e21e 3604 else
8db8f6b6 3605 FT_RETURNYES;
a0d0e21e
LW		 3606}
3607
a0d0e21e
LW		 3608/* File calls. */
3609
3610PP(pp_chdir)
3611{
20b7effb 3612 dSP; dTARGET;
c445ea15 3613 const char *tmps = NULL;
9a957fbc 3614 GV *gv = NULL;
a0d0e21e 3615
c4aca7d0 3616 if( MAXARG == 1 ) {
9a957fbc 3617 SV * const sv = POPs;
d4ac975e
GA		 3618 if (PL_op->op_flags & OPf_SPECIAL) {
3619 gv = gv_fetchsv(sv, 0, SVt_PVIO);
60121127
TC		 3620 if (!gv) {
3621 if (ckWARN(WARN_UNOPENED)) {
3622 Perl_warner(aTHX_ packWARN(WARN_UNOPENED),
3623 "chdir() on unopened filehandle %" SVf, sv);
3624 }
3625 SETERRNO(EBADF,RMS_IFI);
3626 PUSHi(0);
3627 TAINT_PROPER("chdir");
3628 RETURN;
3629 }
d4ac975e 3630 }
2ea1cce7 3631 else if (!(gv = MAYBE_DEREF_GV(sv)))
a0c4bfab 3632 tmps = SvPV_nomg_const_nolen(sv);
c4aca7d0 3633 }
b4929cb4 3634 else {
9a957fbc
AL		 3635 HV * const table = GvHVn(PL_envgv);
3636 SV **svp;
3637
a4fc7abc
AL		 3638 if ( (svp = hv_fetchs(table, "HOME", FALSE))
3639 || (svp = hv_fetchs(table, "LOGDIR", FALSE))
491527d0 3640#ifdef VMS
a4fc7abc 3641 || (svp = hv_fetchs(table, "SYS$LOGIN", FALSE))
491527d0 3642#endif
35ae6b54
MS		 3643 )
3644 {
8c074e2a 3645 tmps = SvPV_nolen_const(*svp);
35ae6b54 3646 }
72f496dc 3647 else {
389ec635 3648 PUSHi(0);
201e9e2a 3649 SETERRNO(EINVAL, LIB_INVARG);
b7ab37f8 3650 TAINT_PROPER("chdir");
389ec635
MS		 3651 RETURN;
3652 }
8ea155d1 3653 }
8ea155d1 3654
a0d0e21e 3655 TAINT_PROPER("chdir");
c4aca7d0
GA		 3656 if (gv) {
3657#ifdef HAS_FCHDIR
9a957fbc 3658 IO* const io = GvIO(gv);
c4aca7d0 3659 if (io) {
c08d6937 3660 if (IoDIRP(io)) {
3497a01f 3661 PUSHi(fchdir(my_dirfd(IoDIRP(io))) >= 0);
c08d6937 3662 } else if (IoIFP(io)) {
375ed12a
JH		 3663 int fd = PerlIO_fileno(IoIFP(io));
3664 if (fd < 0) {
3665 goto nuts;
3666 }
3667 PUSHi(fchdir(fd) >= 0);
c4aca7d0
GA		 3668 }
3669 else {
375ed12a 3670 goto nuts;
c4aca7d0 3671 }
375ed12a
JH		 3672 } else {
3673 goto nuts;
c4aca7d0 3674 }
375ed12a 3675
c4aca7d0
GA		 3676#else
3677 DIE(aTHX_ PL_no_func, "fchdir");
3678#endif
3679 }
3680 else
b8ffc8df 3681 PUSHi( PerlDir_chdir(tmps) >= 0 );
748a9306
LW		 3682#ifdef VMS
3683 /* Clear the DEFAULT element of ENV so we'll get the new value
3684 * in the future. */
6b88bc9c 3685 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
748a9306 3686#endif
a0d0e21e 3687 RETURN;
375ed12a 3688
0a9cc54c 3689#ifdef HAS_FCHDIR
375ed12a
JH		 3690 nuts:
3691 report_evil_fh(gv);
3692 SETERRNO(EBADF,RMS_IFI);
3693 PUSHi(0);
3694 RETURN;
0a9cc54c 3695#endif
a0d0e21e
LW		 3696}
3697
b1c05ba5
DM		 3698
3699/* also used for: pp_chmod() pp_kill() pp_unlink() pp_utime() */
3700
a0d0e21e
LW		 3701PP(pp_chown)
3702{
20b7effb 3703 dSP; dMARK; dTARGET;
605b9385 3704 const I32 value = (I32)apply(PL_op->op_type, MARK, SP);
76ffd3b9 3705
a0d0e21e 3706 SP = MARK;
b59aed67 3707 XPUSHi(value);
a0d0e21e 3708 RETURN;
a0d0e21e
LW		 3709}
3710
3711PP(pp_chroot)
3712{
a0d0e21e 3713#ifdef HAS_CHROOT
20b7effb 3714 dSP; dTARGET;
7452cf6a 3715 char * const tmps = POPpx;
a0d0e21e
LW		 3716 TAINT_PROPER("chroot");
3717 PUSHi( chroot(tmps) >= 0 );
3718 RETURN;
3719#else
cea2e8a9 3720 DIE(aTHX_ PL_no_func, "chroot");
a0d0e21e
LW		 3721#endif
3722}
3723
a0d0e21e
LW		 3724PP(pp_rename)
3725{
20b7effb 3726 dSP; dTARGET;
a0d0e21e 3727 int anum;
45a23732
DD		 3728#ifndef HAS_RENAME
3729 Stat_t statbuf;
3730#endif
7452cf6a
AL		 3731 const char * const tmps2 = POPpconstx;
3732 const char * const tmps = SvPV_nolen_const(TOPs);
a0d0e21e
LW		 3733 TAINT_PROPER("rename");
3734#ifdef HAS_RENAME
baed7233 3735 anum = PerlLIO_rename(tmps, tmps2);
a0d0e21e 3736#else
45a23732 3737 if (!(anum = PerlLIO_stat(tmps, &statbuf))) {
ed969818
W		 3738 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3739 anum = 1;
3740 else {
45a23732 3741 if (PerlProc_geteuid() || PerlLIO_stat(tmps2, &statbuf) < 0 || !S_ISDIR(statbuf.st_mode))
ed969818
W		 3742 (void)UNLINK(tmps2);
3743 if (!(anum = link(tmps, tmps2)))
3744 anum = UNLINK(tmps);
3745 }
a0d0e21e
LW		 3746 }
3747#endif
3748 SETi( anum >= 0 );
3749 RETURN;
3750}
3751
b1c05ba5
DM		 3752
3753/* also used for: pp_symlink() */
3754
ce6987d0 3755#if defined(HAS_LINK) || defined(HAS_SYMLINK)
a0d0e21e
LW		 3756PP(pp_link)
3757{
20b7effb 3758 dSP; dTARGET;
ce6987d0
NC		 3759 const int op_type = PL_op->op_type;
3760 int result;
a0d0e21e 3761
ce6987d0
NC		 3762# ifndef HAS_LINK
3763 if (op_type == OP_LINK)
3764 DIE(aTHX_ PL_no_func, "link");
3765# endif
3766# ifndef HAS_SYMLINK
3767 if (op_type == OP_SYMLINK)
3768 DIE(aTHX_ PL_no_func, "symlink");
3769# endif
3770
3771 {
7452cf6a
AL		 3772 const char * const tmps2 = POPpconstx;
3773 const char * const tmps = SvPV_nolen_const(TOPs);
ce6987d0
NC		 3774 TAINT_PROPER(PL_op_desc[op_type]);
3775 result =
3776# if defined(HAS_LINK)
3777# if defined(HAS_SYMLINK)
3778 /* Both present - need to choose which. */
3779 (op_type == OP_LINK) ?
3780 PerlLIO_link(tmps, tmps2) : symlink(tmps, tmps2);
3781# else
4a8ebb7f
SH		 3782 /* Only have link, so calls to pp_symlink will have DIE()d above. */
3783 PerlLIO_link(tmps, tmps2);
ce6987d0
NC		 3784# endif
3785# else
3786# if defined(HAS_SYMLINK)
4a8ebb7f
SH		 3787 /* Only have symlink, so calls to pp_link will have DIE()d above. */
3788 symlink(tmps, tmps2);
ce6987d0
NC		 3789# endif
3790# endif
3791 }
3792
3793 SETi( result >= 0 );
a0d0e21e 3794 RETURN;
ce6987d0 3795}
a0d0e21e 3796#else
b1c05ba5
DM		 3797
3798/* also used for: pp_symlink() */
3799
ce6987d0
NC		 3800PP(pp_link)
3801{
3802 /* Have neither. */
3803 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
a0d0e21e 3804}
ce6987d0 3805#endif
a0d0e21e
LW		 3806
3807PP(pp_readlink)
3808{
76ffd3b9 3809 dSP;
a0d0e21e 3810#ifdef HAS_SYMLINK
76ffd3b9 3811 dTARGET;
10516c54 3812 const char *tmps;
46fc3d4c 3813 char buf[MAXPATHLEN];
51b468f6 3814 SSize_t len;
46fc3d4c 3815
fb73857a 3816 TAINT;
10516c54 3817 tmps = POPpconstx;
51b468f6
JH		 3818 /* NOTE: if the length returned by readlink() is sizeof(buf) - 1,
3819 * it is impossible to know whether the result was truncated. */
97dcea33 3820 len = readlink(tmps, buf, sizeof(buf) - 1);
a0d0e21e
LW		 3821 if (len < 0)
3822 RETPUSHUNDEF;
51b468f6
JH		 3823 if (len != -1)
3824 buf[len] = '\0';
a0d0e21e
LW		 3825 PUSHp(buf, len);
3826 RETURN;
3827#else
3828 EXTEND(SP, 1);
3829 RETSETUNDEF; /* just pretend it's a normal file */
3830#endif
3831}
3832
3833#if !defined(HAS_MKDIR) || !defined(HAS_RMDIR)
ba106d47 3834STATIC int
b464bac0 3835S_dooneliner(pTHX_ const char *cmd, const char *filename)
a0d0e21e 3836{
b464bac0 3837 char * const save_filename = filename;
1e422769 3838 char *cmdline;
3839 char *s;
760ac839 3840 PerlIO *myfp;
1e422769 3841 int anum = 1;
6fca0082 3842 Size_t size = strlen(cmd) + (strlen(filename) * 2) + 10;
a0d0e21e 3843
7918f24d
NC		 3844 PERL_ARGS_ASSERT_DOONELINER;
3845
6fca0082
SP		 3846 Newx(cmdline, size, char);
3847 my_strlcpy(cmdline, cmd, size);
3848 my_strlcat(cmdline, " ", size);
1e422769 3849 for (s = cmdline + strlen(cmdline); *filename; ) {
a0d0e21e
LW		 3850 *s++ = '\\';
3851 *s++ = *filename++;
3852 }
d1307786
JH		 3853 if (s - cmdline < size)
3854 my_strlcpy(s, " 2>&1", size - (s - cmdline));
6ad3d225 3855 myfp = PerlProc_popen(cmdline, "r");
1e422769 3856 Safefree(cmdline);
3857
a0d0e21e 3858 if (myfp) {
0bcc34c2 3859 SV * const tmpsv = sv_newmortal();
6b88bc9c 3860 /* Need to save/restore 'PL_rs' ?? */
760ac839 3861 s = sv_gets(tmpsv, myfp, 0);
6ad3d225 3862 (void)PerlProc_pclose(myfp);
bd61b366 3863 if (s != NULL) {
1e422769 3864 int e;
3865 for (e = 1;
a0d0e21e 3866#ifdef HAS_SYS_ERRLIST
1e422769 3867 e <= sys_nerr
3868#endif
3869 ; e++)
3870 {
3871 /* you don't see this */
9b86a269 3872 const char * const errmsg = Strerror(e) ;
1e422769 3873 if (!errmsg)
3874 break;
3875 if (instr(s, errmsg)) {
3876 SETERRNO(e,0);
3877 return 0;
3878 }
a0d0e21e 3879 }
748a9306 3880 SETERRNO(0,0);
a0d0e21e
LW		 3881#ifndef EACCES
3882#define EACCES EPERM
3883#endif
1e422769 3884 if (instr(s, "cannot make"))
93189314 3885 SETERRNO(EEXIST,RMS_FEX);
1e422769 3886 else if (instr(s, "existing file"))
93189314 3887 SETERRNO(EEXIST,RMS_FEX);
1e422769 3888 else if (instr(s, "ile exists"))
93189314 3889 SETERRNO(EEXIST,RMS_FEX);
1e422769 3890 else if (instr(s, "non-exist"))
93189314 3891 SETERRNO(ENOENT,RMS_FNF);
1e422769 3892 else if (instr(s, "does not exist"))
93189314 3893 SETERRNO(ENOENT,RMS_FNF);
1e422769 3894 else if (instr(s, "not empty"))
93189314 3895 SETERRNO(EBUSY,SS_DEVOFFLINE);
1e422769 3896 else if (instr(s, "cannot access"))
93189314 3897 SETERRNO(EACCES,RMS_PRV);
a0d0e21e 3898 else
93189314 3899 SETERRNO(EPERM,RMS_PRV);
a0d0e21e
LW		 3900 return 0;
3901 }
3902 else { /* some mkdirs return no failure indication */
45a23732
DD		 3903 Stat_t statbuf;
3904 anum = (PerlLIO_stat(save_filename, &statbuf) >= 0);
911d147d 3905 if (PL_op->op_type == OP_RMDIR)
a0d0e21e
LW		 3906 anum = !anum;
3907 if (anum)
748a9306 3908 SETERRNO(0,0);
a0d0e21e 3909 else
93189314 3910 SETERRNO(EACCES,RMS_PRV); /* a guess */
a0d0e21e
LW		 3911 }
3912 return anum;
3913 }
3914 else
3915 return 0;
3916}
3917#endif
3918
0c54f65b
RGS		 3919/* This macro removes trailing slashes from a directory name.
3920 * Different operating and file systems take differently to
3921 * trailing slashes. According to POSIX 1003.1 1996 Edition
3922 * any number of trailing slashes should be allowed.
3923 * Thusly we snip them away so that even non-conforming
3924 * systems are happy.
3925 * We should probably do this "filtering" for all
3926 * the functions that expect (potentially) directory names:
3927 * -d, chdir(), chmod(), chown(), chroot(), fcntl()?,
3928 * (mkdir()), opendir(), rename(), rmdir(), stat(). --jhi */
3929
5c144d81 3930#define TRIMSLASHES(tmps,len,copy) (tmps) = SvPV_const(TOPs, (len)); \
0c54f65b
RGS		 3931 if ((len) > 1 && (tmps)[(len)-1] == '/') { \
3932 do { \
3933 (len)--; \
3934 } while ((len) > 1 && (tmps)[(len)-1] == '/'); \
3935 (tmps) = savepvn((tmps), (len)); \
3936 (copy) = TRUE; \
3937 }
3938
a0d0e21e
LW		 3939PP(pp_mkdir)
3940{
20b7effb 3941 dSP; dTARGET;
df25ddba 3942 STRLEN len;
5c144d81 3943 const char *tmps;
df25ddba 3944 bool copy = FALSE;
2ef2454e 3945 const unsigned int mode = (MAXARG > 1 && (TOPs||((void)POPs,0))) ? POPu : 0777;
5a211162 3946
0c54f65b 3947 TRIMSLASHES(tmps,len,copy);
a0d0e21e
LW		 3948
3949 TAINT_PROPER("mkdir");
3950#ifdef HAS_MKDIR
b8ffc8df 3951 SETi( PerlDir_mkdir(tmps, mode) >= 0 );
a0d0e21e 3952#else
0bcc34c2
AL		 3953 {
3954 int oldumask;
a0d0e21e 3955 SETi( dooneliner("mkdir", tmps) );
6ad3d225
GS		 3956 oldumask = PerlLIO_umask(0);
3957 PerlLIO_umask(oldumask);
3958 PerlLIO_chmod(tmps, (mode & ~oldumask) & 0777);
0bcc34c2 3959 }
a0d0e21e 3960#endif
df25ddba
JH		 3961 if (copy)
3962 Safefree(tmps);
a0d0e21e
LW		 3963 RETURN;
3964}
3965
3966PP(pp_rmdir)
3967{
20b7effb 3968 dSP; dTARGET;
0c54f65b 3969 STRLEN len;
5c144d81 3970 const char *tmps;
0c54f65b 3971 bool copy = FALSE;
a0d0e21e 3972
0c54f65b 3973 TRIMSLASHES(tmps,len,copy);
a0d0e21e
LW		 3974 TAINT_PROPER("rmdir");
3975#ifdef HAS_RMDIR
b8ffc8df 3976 SETi( PerlDir_rmdir(tmps) >= 0 );
a0d0e21e 3977#else
0c54f65b 3978 SETi( dooneliner("rmdir", tmps) );
a0d0e21e 3979#endif
0c54f65b
RGS		 3980 if (copy)
3981 Safefree(tmps);
a0d0e21e
LW		 3982 RETURN;
3983}
3984
3985/* Directory calls. */
3986
3987PP(pp_open_dir)
3988{
a0d0e21e 3989#if defined(Direntry_t) && defined(HAS_READDIR)
20b7effb 3990 dSP;
7452cf6a 3991 const char * const dirname = POPpconstx;
159b6efe 3992 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 3993 IO * const io = GvIOn(gv);
a0d0e21e 3994
a2a5de95 3995 if ((IoIFP(io) || IoOFP(io)))
d1d15184 3996 Perl_ck_warner_d(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
d0c0e7dd
FC		 3997 "Opening filehandle %"HEKf" also as a directory",
3998 HEKfARG(GvENAME_HEK(gv)) );
a0d0e21e 3999 if (IoDIRP(io))
6ad3d225 4000 PerlDir_close(IoDIRP(io));
b8ffc8df 4001 if (!(IoDIRP(io) = PerlDir_open(dirname)))
a0d0e21e
LW		 4002 goto nope;
4003
4004 RETPUSHYES;
7b52d656 4005 nope:
a0d0e21e 4006 if (!errno)
93189314 4007 SETERRNO(EBADF,RMS_DIR);
a0d0e21e
LW		 4008 RETPUSHUNDEF;
4009#else
cea2e8a9 4010 DIE(aTHX_ PL_no_dir_func, "opendir");
a0d0e21e
LW		 4011#endif
4012}
4013
4014PP(pp_readdir)
4015{
34b7f128
AMS		 4016#if !defined(Direntry_t) || !defined(HAS_READDIR)
4017 DIE(aTHX_ PL_no_dir_func, "readdir");
4018#else
fd8cd3a3 4019#if !defined(I_DIRENT) && !defined(VMS)
20ce7b12 4020 Direntry_t *readdir (DIR *);
a0d0e21e 4021#endif
34b7f128
AMS		 4022 dSP;
4023
4024 SV *sv;
1c23e2bd 4025 const U8 gimme = GIMME_V;
159b6efe 4026 GV * const gv = MUTABLE_GV(POPs);
eb578fdb
KW		 4027 const Direntry_t *dp;
4028 IO * const io = GvIOn(gv);
a0d0e21e 4029
8a6c0fcb 4030 if (!IoDIRP(io)) {
a2a5de95 4031 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
d0c0e7dd
FC		 4032 "readdir() attempted on invalid dirhandle %"HEKf,
4033 HEKfARG(GvENAME_HEK(gv)));
3b7fbd4a
SP		 4034 goto nope;
4035 }
a0d0e21e 4036
34b7f128
AMS		 4037 do {
4038 dp = (Direntry_t *)PerlDir_read(IoDIRP(io));
4039 if (!dp)
4040 break;
a0d0e21e 4041#ifdef DIRNAMLEN
34b7f128 4042 sv = newSVpvn(dp->d_name, dp->d_namlen);
a0d0e21e 4043#else
34b7f128 4044 sv = newSVpv(dp->d_name, 0);
fb73857a 4045#endif
34b7f128
AMS		 4046 if (!(IoFLAGS(io) & IOf_UNTAINT))
4047 SvTAINTED_on(sv);
6e449a3a 4048 mXPUSHs(sv);
a79db61d 4049 } while (gimme == G_ARRAY);
34b7f128
AMS		 4050
4051 if (!dp && gimme != G_ARRAY)
ee71f1d1 4052 RETPUSHUNDEF;
34b7f128 4053
a0d0e21e
LW		 4054 RETURN;
4055
7b52d656 4056 nope:
a0d0e21e 4057 if (!errno)
93189314 4058 SETERRNO(EBADF,RMS_ISI);
da39159d 4059 if (gimme == G_ARRAY)
a0d0e21e
LW		 4060 RETURN;
4061 else
4062 RETPUSHUNDEF;
a0d0e21e
LW		 4063#endif
4064}
4065
4066PP(pp_telldir)
4067{
a0d0e21e 4068#if defined(HAS_TELLDIR) || defined(telldir)
20b7effb 4069 dSP; dTARGET;
968dcd91
JH		 4070 /* XXX does _anyone_ need this? --AD 2/20/1998 */
4071 /* XXX netbsd still seemed to.
4072 XXX HAS_TELLDIR_PROTO is new style, NEED_TELLDIR_PROTO is old style.
4073 --JHI 1999-Feb-02 */
4074# if !defined(HAS_TELLDIR_PROTO) || defined(NEED_TELLDIR_PROTO)
20ce7b12 4075 long telldir (DIR *);
dfe9444c 4076# endif
159b6efe 4077 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 4078 IO * const io = GvIOn(gv);
a0d0e21e 4079
8a6c0fcb 4080 if (!IoDIRP(io)) {
a2a5de95 4081 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
d0c0e7dd
FC		 4082 "telldir() attempted on invalid dirhandle %"HEKf,
4083 HEKfARG(GvENAME_HEK(gv)));
abc7ecad
SP		 4084 goto nope;
4085 }
a0d0e21e 4086
6ad3d225 4087 PUSHi( PerlDir_tell(IoDIRP(io)) );
a0d0e21e 4088 RETURN;
7b52d656 4089 nope:
a0d0e21e 4090 if (!errno)
93189314 4091 SETERRNO(EBADF,RMS_ISI);
a0d0e21e
LW		 4092 RETPUSHUNDEF;
4093#else
cea2e8a9 4094 DIE(aTHX_ PL_no_dir_func, "telldir");
a0d0e21e
LW		 4095#endif
4096}
4097
4098PP(pp_seekdir)
4099{
a0d0e21e 4100#if defined(HAS_SEEKDIR) || defined(seekdir)
20b7effb 4101 dSP;
7452cf6a 4102 const long along = POPl;
159b6efe 4103 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 4104 IO * const io = GvIOn(gv);
a0d0e21e 4105
8a6c0fcb 4106 if (!IoDIRP(io)) {
a2a5de95 4107 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
d0c0e7dd
FC		 4108 "seekdir() attempted on invalid dirhandle %"HEKf,
4109 HEKfARG(GvENAME_HEK(gv)));
abc7ecad
SP		 4110 goto nope;
4111 }
6ad3d225 4112 (void)PerlDir_seek(IoDIRP(io), along);
a0d0e21e
LW		 4113
4114 RETPUSHYES;
7b52d656 4115 nope:
a0d0e21e 4116 if (!errno)
93189314 4117 SETERRNO(EBADF,RMS_ISI);
a0d0e21e
LW		 4118 RETPUSHUNDEF;
4119#else
cea2e8a9 4120 DIE(aTHX_ PL_no_dir_func, "seekdir");
a0d0e21e
LW		 4121#endif
4122}
4123
4124PP(pp_rewinddir)
4125{
a0d0e21e 4126#if defined(HAS_REWINDDIR) || defined(rewinddir)
20b7effb 4127 dSP;
159b6efe 4128 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 4129 IO * const io = GvIOn(gv);
a0d0e21e 4130
8a6c0fcb 4131 if (!IoDIRP(io)) {
a2a5de95 4132 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
d0c0e7dd
FC		 4133 "rewinddir() attempted on invalid dirhandle %"HEKf,
4134 HEKfARG(GvENAME_HEK(gv)));
a0d0e21e 4135 goto nope;
abc7ecad 4136 }
6ad3d225 4137 (void)PerlDir_rewind(IoDIRP(io));
a0d0e21e 4138 RETPUSHYES;
7b52d656 4139 nope:
a0d0e21e 4140 if (!errno)
93189314 4141 SETERRNO(EBADF,RMS_ISI);
a0d0e21e
LW		 4142 RETPUSHUNDEF;
4143#else
cea2e8a9 4144 DIE(aTHX_ PL_no_dir_func, "rewinddir");
a0d0e21e
LW		 4145#endif
4146}
4147
4148PP(pp_closedir)
4149{
a0d0e21e 4150#if defined(Direntry_t) && defined(HAS_READDIR)
20b7effb 4151 dSP;
159b6efe 4152 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 4153 IO * const io = GvIOn(gv);
a0d0e21e 4154
8a6c0fcb 4155 if (!IoDIRP(io)) {
a2a5de95 4156 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
d0c0e7dd
FC		 4157 "closedir() attempted on invalid dirhandle %"HEKf,
4158 HEKfARG(GvENAME_HEK(gv)));
abc7ecad
SP		 4159 goto nope;
4160 }
a0d0e21e 4161#ifdef VOID_CLOSEDIR
6ad3d225 4162 PerlDir_close(IoDIRP(io));
a0d0e21e 4163#else
6ad3d225 4164 if (PerlDir_close(IoDIRP(io)) < 0) {
748a9306 4165 IoDIRP(io) = 0; /* Don't try to close again--coredumps on SysV */
a0d0e21e 4166 goto nope;
748a9306 4167 }
a0d0e21e
LW		 4168#endif
4169 IoDIRP(io) = 0;
4170
4171 RETPUSHYES;
7b52d656 4172 nope:
a0d0e21e 4173 if (!errno)
93189314 4174 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW		 4175 RETPUSHUNDEF;
4176#else
cea2e8a9 4177 DIE(aTHX_ PL_no_dir_func, "closedir");
a0d0e21e
LW		 4178#endif
4179}
4180
4181/* Process control. */
4182
4183PP(pp_fork)
4184{
44a8e56a 4185#ifdef HAS_FORK
20b7effb 4186 dSP; dTARGET;
761237fe 4187 Pid_t childpid;
21e89b5f 4188#ifdef HAS_SIGPROCMASK
eb3d0a58
LT		 4189 sigset_t oldmask, newmask;
4190#endif
a0d0e21e
LW		 4191
4192 EXTEND(SP, 1);
45bc9206 4193 PERL_FLUSHALL_FOR_CHILD;
21e89b5f 4194#ifdef HAS_SIGPROCMASK
eb3d0a58
LT		 4195 sigfillset(&newmask);
4196 sigprocmask(SIG_SETMASK, &newmask, &oldmask);
4197#endif
52e18b1f 4198 childpid = PerlProc_fork();
eb3d0a58
LT		 4199 if (childpid == 0) {
4200 int sig;
4201 PL_sig_pending = 0;
4202 if (PL_psig_pend)
4203 for (sig = 1; sig < SIG_SIZE; sig++)
4204 PL_psig_pend[sig] = 0;
4205 }
21e89b5f 4206#ifdef HAS_SIGPROCMASK
eb3d0a58
LT		 4207 {
4208 dSAVE_ERRNO;
4209 sigprocmask(SIG_SETMASK, &oldmask, NULL);
4210 RESTORE_ERRNO;
4211 }
4212#endif
a0d0e21e 4213 if (childpid < 0)
af2fe5eb 4214 RETPUSHUNDEF;
a0d0e21e 4215 if (!childpid) {
ca0c25f6 4216#ifdef PERL_USES_PL_PIDSTATUS
3280af22 4217 hv_clear(PL_pidstatus); /* no kids, so don't wait for 'em */
ca0c25f6 4218#endif
a0d0e21e
LW		 4219 }
4220 PUSHi(childpid);
4221 RETURN;
4222#else
ba12e08f 4223# if (defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)) || defined(__amigaos4__)
39644a26 4224 dSP; dTARGET;
146174a9
CB		 4225 Pid_t childpid;
4226
4227 EXTEND(SP, 1);
4228 PERL_FLUSHALL_FOR_CHILD;
4229 childpid = PerlProc_fork();
60fa28ff 4230 if (childpid == -1)
af2fe5eb 4231 RETPUSHUNDEF;
146174a9
CB		 4232 PUSHi(childpid);
4233 RETURN;
4234# else
0322a713 4235 DIE(aTHX_ PL_no_func, "fork");
146174a9 4236# endif
a0d0e21e
LW		 4237#endif
4238}
4239
4240PP(pp_wait)
4241{
e37778c2 4242#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(__LIBCATAMOUNT__)
20b7effb 4243 dSP; dTARGET;
761237fe 4244 Pid_t childpid;
a0d0e21e 4245 int argflags;
a0d0e21e 4246
4ffa73a3
JH		 4247 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
4248 childpid = wait4pid(-1, &argflags, 0);
4249 else {
4250 while ((childpid = wait4pid(-1, &argflags, 0)) == -1 &&
4251 errno == EINTR) {
4252 PERL_ASYNC_CHECK();
4253 }
0a0ada86 4254 }
68a29c53
GS		 4255# if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4256 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
2fbb330f 4257 STATUS_NATIVE_CHILD_SET((childpid && childpid != -1) ? argflags : -1);
68a29c53 4258# else
2fbb330f 4259 STATUS_NATIVE_CHILD_SET((childpid > 0) ? argflags : -1);
68a29c53 4260# endif
44a8e56a 4261 XPUSHi(childpid);
a0d0e21e
LW		 4262 RETURN;
4263#else
0322a713 4264 DIE(aTHX_ PL_no_func, "wait");
a0d0e21e
LW		 4265#endif
4266}
4267
4268PP(pp_waitpid)
4269{
e37778c2 4270#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(__LIBCATAMOUNT__)
20b7effb 4271 dSP; dTARGET;
0bcc34c2
AL		 4272 const int optype = POPi;
4273 const Pid_t pid = TOPi;
2ec0bfb3 4274 Pid_t result;
40262ff4
AB		 4275#ifdef __amigaos4__
4276 int argflags = 0;
4277 result = amigaos_waitpid(aTHX_ optype, pid, &argflags);
4278 STATUS_NATIVE_CHILD_SET((result >= 0) ? argflags : -1);
4279 result = result == 0 ? pid : -1;
4280#else
a0d0e21e 4281 int argflags;
a0d0e21e 4282
4ffa73a3 4283 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
2ec0bfb3 4284 result = wait4pid(pid, &argflags, optype);
4ffa73a3 4285 else {
2ec0bfb3 4286 while ((result = wait4pid(pid, &argflags, optype)) == -1 &&
4ffa73a3
JH		 4287 errno == EINTR) {
4288 PERL_ASYNC_CHECK();
4289 }
0a0ada86 4290 }
68a29c53
GS		 4291# if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4292 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
2fbb330f 4293 STATUS_NATIVE_CHILD_SET((result && result != -1) ? argflags : -1);
68a29c53 4294# else
2fbb330f 4295 STATUS_NATIVE_CHILD_SET((result > 0) ? argflags : -1);
68a29c53 4296# endif
40262ff4 4297# endif /* __amigaos4__ */
2ec0bfb3 4298 SETi(result);
a0d0e21e
LW		 4299 RETURN;
4300#else
0322a713 4301 DIE(aTHX_ PL_no_func, "waitpid");
a0d0e21e
LW		 4302#endif
4303}
4304
4305PP(pp_system)
4306{
20b7effb 4307 dSP; dMARK; dORIGMARK; dTARGET;
9c12f1e5
RGS		 4308#if defined(__LIBCATAMOUNT__)
4309 PL_statusvalue = -1;
4310 SP = ORIGMARK;
4311 XPUSHi(-1);
4312#else
a0d0e21e 4313 I32 value;
40262ff4
AB		 4314# ifdef __amigaos4__
4315 void * result;
4316# else
76ffd3b9 4317 int result;
40262ff4 4318# endif
a0d0e21e 4319
284167a5 4320 if (TAINTING_get) {
bbd7eb8a
RD		 4321 TAINT_ENV();
4322 while (++MARK <= SP) {
10516c54 4323 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
284167a5 4324 if (TAINT_get)
bbd7eb8a
RD		 4325 break;
4326 }
4327 MARK = ORIGMARK;
5a445156 4328 TAINT_PROPER("system");
a0d0e21e 4329 }
45bc9206 4330 PERL_FLUSHALL_FOR_CHILD;
40262ff4 4331#if (defined(HAS_FORK) || defined(__amigaos4__)) && !defined(VMS) && !defined(OS2) || defined(PERL_MICRO)
d7e492a4 4332 {
ea34f6bd 4333#ifdef __amigaos4__
40262ff4
AB		 4334 struct UserData userdata;
4335 pthread_t proc;
4336#else
eb160463 4337 Pid_t childpid;
40262ff4 4338#endif
eb160463 4339 int pp[2];
27da23d5 4340 I32 did_pipes = 0;
40262ff4 4341 bool child_success = FALSE;
21e89b5f 4342#ifdef HAS_SIGPROCMASK
b1cf9e92
LT		 4343 sigset_t newset, oldset;
4344#endif
eb160463
GS		 4345
4346 if (PerlProc_pipe(pp) >= 0)
4347 did_pipes = 1;
ea34f6bd 4348#ifdef __amigaos4__
40262ff4
AB		 4349 amigaos_fork_set_userdata(aTHX_
4350 &userdata,
4351 did_pipes,
4352 pp[1],
4353 SP,
4354 mark);
4355 pthread_create(&proc,NULL,amigaos_system_child,(void *)&userdata);
4356 child_success = proc > 0;
4357#else
21e89b5f 4358#ifdef HAS_SIGPROCMASK
b1cf9e92
LT		 4359 sigemptyset(&newset);
4360 sigaddset(&newset, SIGCHLD);
4361 sigprocmask(SIG_BLOCK, &newset, &oldset);
4362#endif
eb160463
GS		 4363 while ((childpid = PerlProc_fork()) == -1) {
4364 if (errno != EAGAIN) {
4365 value = -1;
4366 SP = ORIGMARK;
b59aed67 4367 XPUSHi(value);
eb160463
GS		 4368 if (did_pipes) {
4369 PerlLIO_close(pp[0]);
4370 PerlLIO_close(pp[1]);
4371 }
21e89b5f 4372#ifdef HAS_SIGPROCMASK
b1cf9e92
LT		 4373 sigprocmask(SIG_SETMASK, &oldset, NULL);
4374#endif
eb160463
GS		 4375 RETURN;
4376 }
4377 sleep(5);
4378 }
40262ff4
AB		 4379 child_success = childpid > 0;
4380#endif
4381 if (child_success) {
eb160463
GS		 4382 Sigsave_t ihand,qhand; /* place to save signals during system() */
4383 int status;
4384
40262ff4 4385#ifndef __amigaos4__
eb160463
GS		 4386 if (did_pipes)
4387 PerlLIO_close(pp[1]);
40262ff4 4388#endif
64ca3a65 4389#ifndef PERL_MICRO
8aad04aa
JH		 4390 rsignal_save(SIGINT, (Sighandler_t) SIG_IGN, &ihand);
4391 rsignal_save(SIGQUIT, (Sighandler_t) SIG_IGN, &qhand);
64ca3a65 4392#endif
40262ff4
AB		 4393#ifdef __amigaos4__
4394 result = pthread_join(proc, (void **)&status);
4395#else
eb160463
GS		 4396 do {
4397 result = wait4pid(childpid, &status, 0);
4398 } while (result == -1 && errno == EINTR);
40262ff4 4399#endif
64ca3a65 4400#ifndef PERL_MICRO
b1cf9e92
LT		 4401#ifdef HAS_SIGPROCMASK
4402 sigprocmask(SIG_SETMASK, &oldset, NULL);
4403#endif
eb160463
GS		 4404 (void)rsignal_restore(SIGINT, &ihand);
4405 (void)rsignal_restore(SIGQUIT, &qhand);
4406#endif
37038d91 4407 STATUS_NATIVE_CHILD_SET(result == -1 ? -1 : status);
eb160463
GS		 4408 do_execfree(); /* free any memory child malloced on fork */
4409 SP = ORIGMARK;
4410 if (did_pipes) {
4411 int errkid;
bb7a0f54
MHM		 4412 unsigned n = 0;
4413 SSize_t n1;
eb160463
GS		 4414
4415 while (n < sizeof(int)) {
4416 n1 = PerlLIO_read(pp[0],
4417 (void*)(((char*)&errkid)+n),
4418 (sizeof(int)) - n);
4419 if (n1 <= 0)
4420 break;
4421 n += n1;
4422 }
4423 PerlLIO_close(pp[0]);
4424 if (n) { /* Error */
4425 if (n != sizeof(int))
5637ef5b 4426 DIE(aTHX_ "panic: kid popen errno read, n=%u", n);
eb160463 4427 errno = errkid; /* Propagate errno from kid */
ea34f6bd 4428#ifdef __amigaos4__
40262ff4
AB		 4429 /* The pipe always has something in it
4430 * so n alone is not enough. */
4431 if (errno > 0)
4432#endif
4433 {
4434 STATUS_NATIVE_CHILD_SET(-1);
4435 }
eb160463
GS		 4436 }
4437 }
b59aed67 4438 XPUSHi(STATUS_CURRENT);
eb160463
GS		 4439 RETURN;
4440 }
40262ff4 4441#ifndef __amigaos4__
21e89b5f 4442#ifdef HAS_SIGPROCMASK
b1cf9e92
LT		 4443 sigprocmask(SIG_SETMASK, &oldset, NULL);
4444#endif
eb160463
GS		 4445 if (did_pipes) {
4446 PerlLIO_close(pp[0]);
131d45a9 4447#if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
375ed12a
JH		 4448 if (fcntl(pp[1], F_SETFD, FD_CLOEXEC) < 0)
4449 RETPUSHUNDEF;
d5a9bfb0 4450#endif
eb160463 4451 }
e0a1f643 4452 if (PL_op->op_flags & OPf_STACKED) {
0bcc34c2 4453 SV * const really = *++MARK;
e0a1f643
JH		 4454 value = (I32)do_aexec5(really, MARK, SP, pp[1], did_pipes);
4455 }
4456 else if (SP - MARK != 1)
a0714e2c 4457 value = (I32)do_aexec5(NULL, MARK, SP, pp[1], did_pipes);
e0a1f643 4458 else {
8c074e2a 4459 value = (I32)do_exec3(SvPVx_nolen(sv_mortalcopy(*SP)), pp[1], did_pipes);
e0a1f643 4460 }
40262ff4 4461#endif /* __amigaos4__ */
e0a1f643 4462 PerlProc__exit(-1);
d5a9bfb0 4463 }
c3293030 4464#else /* ! FORK or VMS or OS/2 */
922b1888
GS		 4465 PL_statusvalue = 0;
4466 result = 0;
911d147d 4467 if (PL_op->op_flags & OPf_STACKED) {
0bcc34c2 4468 SV * const really = *++MARK;
9ec7171b 4469# if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__) || defined(__VMS)
54725af6
GS		 4470 value = (I32)do_aspawn(really, MARK, SP);
4471# else
c5be433b 4472 value = (I32)do_aspawn(really, (void **)MARK, (void **)SP);
54725af6 4473# endif
a0d0e21e 4474 }
54725af6 4475 else if (SP - MARK != 1) {
9ec7171b 4476# if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__) || defined(__VMS)
a0714e2c 4477 value = (I32)do_aspawn(NULL, MARK, SP);
54725af6 4478# else
a0714e2c 4479 value = (I32)do_aspawn(NULL, (void **)MARK, (void **)SP);
54725af6
GS		 4480# endif
4481 }
a0d0e21e 4482 else {
8c074e2a 4483 value = (I32)do_spawn(SvPVx_nolen(sv_mortalcopy(*SP)));
a0d0e21e 4484 }
922b1888
GS		 4485 if (PL_statusvalue == -1) /* hint that value must be returned as is */
4486 result = 1;
2fbb330f 4487 STATUS_NATIVE_CHILD_SET(value);
a0d0e21e
LW		 4488 do_execfree();
4489 SP = ORIGMARK;
b59aed67 4490 XPUSHi(result ? value : STATUS_CURRENT);
9c12f1e5
RGS		 4491#endif /* !FORK or VMS or OS/2 */
4492#endif
a0d0e21e
LW		 4493 RETURN;
4494}
4495
4496PP(pp_exec)
4497{
20b7effb 4498 dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e
LW		 4499 I32 value;
4500
284167a5 4501 if (TAINTING_get) {
bbd7eb8a
RD		 4502 TAINT_ENV();
4503 while (++MARK <= SP) {
10516c54 4504 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
284167a5 4505 if (TAINT_get)
bbd7eb8a
RD		 4506 break;
4507 }
4508 MARK = ORIGMARK;
5a445156 4509 TAINT_PROPER("exec");
bbd7eb8a 4510 }
738ab09f 4511
45bc9206 4512 PERL_FLUSHALL_FOR_CHILD;
533c011a 4513 if (PL_op->op_flags & OPf_STACKED) {
0bcc34c2 4514 SV * const really = *++MARK;
a0d0e21e
LW		 4515 value = (I32)do_aexec(really, MARK, SP);
4516 }
4517 else if (SP - MARK != 1)
4518#ifdef VMS
a0714e2c 4519 value = (I32)vms_do_aexec(NULL, MARK, SP);
a0d0e21e 4520#else
a0714e2c 4521 value = (I32)do_aexec(NULL, MARK, SP);
a0d0e21e
LW		 4522#endif
4523 else {
a0d0e21e 4524#ifdef VMS
8c074e2a 4525 value = (I32)vms_do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
a0d0e21e 4526#else
5dd60a52 4527 value = (I32)do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
a0d0e21e
LW		 4528#endif
4529 }
4530 SP = ORIGMARK;
b59aed67 4531 XPUSHi(value);
a0d0e21e
LW		 4532 RETURN;
4533}
4534
a0d0e21e
LW		 4535PP(pp_getppid)
4536{
4537#ifdef HAS_GETPPID
20b7effb 4538 dSP; dTARGET;
a0d0e21e
LW		 4539 XPUSHi( getppid() );
4540 RETURN;
4541#else
cea2e8a9 4542 DIE(aTHX_ PL_no_func, "getppid");
a0d0e21e
LW		 4543#endif
4544}
4545
4546PP(pp_getpgrp)
4547{
4548#ifdef HAS_GETPGRP
20b7effb 4549 dSP; dTARGET;
9853a804 4550 Pid_t pgrp;
8af20142
FC		 4551 const Pid_t pid =
4552 (MAXARG < 1) ? 0 : TOPs ? SvIVx(POPs) : ((void)POPs, 0);
a0d0e21e 4553
c3293030 4554#ifdef BSD_GETPGRP
9853a804 4555 pgrp = (I32)BSD_GETPGRP(pid);
a0d0e21e 4556#else
146174a9 4557 if (pid != 0 && pid != PerlProc_getpid())
cea2e8a9 4558 DIE(aTHX_ "POSIX getpgrp can't take an argument");
9853a804 4559 pgrp = getpgrp();
a0d0e21e 4560#endif
9853a804 4561 XPUSHi(pgrp);
a0d0e21e
LW		 4562 RETURN;
4563#else
56a94ef2 4564 DIE(aTHX_ PL_no_func, "getpgrp");
a0d0e21e
LW		 4565#endif
4566}
4567
4568PP(pp_setpgrp)
4569{
4570#ifdef HAS_SETPGRP
20b7effb 4571 dSP; dTARGET;
d8a83dd3
JH		 4572 Pid_t pgrp;
4573 Pid_t pid;
92f2ac5f 4574 pgrp = MAXARG == 2 && (TOPs||POPs) ? POPi : 0;
bae8cfc6 4575 if (MAXARG > 0) pid = TOPs ? TOPi : 0;
92f2ac5f 4576 else {
a0d0e21e 4577 pid = 0;
8ec05255
FC		 4578 EXTEND(SP,1);
4579 SP++;
a0d0e21e 4580 }
a0d0e21e
LW		 4581
4582 TAINT_PROPER("setpgrp");
c3293030
IZ		 4583#ifdef BSD_SETPGRP
4584 SETi( BSD_SETPGRP(pid, pgrp) >= 0 );
a0d0e21e 4585#else
146174a9
CB		 4586 if ((pgrp != 0 && pgrp != PerlProc_getpid())
4587 || (pid != 0 && pid != PerlProc_getpid()))
4588 {
4589 DIE(aTHX_ "setpgrp can't take arguments");
4590 }
a0d0e21e
LW		 4591 SETi( setpgrp() >= 0 );
4592#endif /* USE_BSDPGRP */
4593 RETURN;
4594#else
56a94ef2 4595 DIE(aTHX_ PL_no_func, "setpgrp");
a0d0e21e
LW		 4596#endif
4597}
4598
8b079db6 4599#if defined(__GLIBC__) && ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3) || (__GLIBC__ > 2))
5baa2e4f
RB		 4600# define PRIORITY_WHICH_T(which) (__priority_which_t)which
4601#else
4602# define PRIORITY_WHICH_T(which) which
4603#endif
4604
a0d0e21e
LW		 4605PP(pp_getpriority)
4606{
a0d0e21e 4607#ifdef HAS_GETPRIORITY
20b7effb 4608 dSP; dTARGET;
0bcc34c2
AL		 4609 const int who = POPi;
4610 const int which = TOPi;
5baa2e4f 4611 SETi( getpriority(PRIORITY_WHICH_T(which), who) );
a0d0e21e
LW		 4612 RETURN;
4613#else
56a94ef2 4614 DIE(aTHX_ PL_no_func, "getpriority");
a0d0e21e
LW		 4615#endif
4616}
4617
4618PP(pp_setpriority)
4619{
a0d0e21e 4620#ifdef HAS_SETPRIORITY
20b7effb 4621 dSP; dTARGET;
0bcc34c2
AL		 4622 const int niceval = POPi;
4623 const int who = POPi;
4624 const int which = TOPi;
a0d0e21e 4625 TAINT_PROPER("setpriority");
5baa2e4f 4626 SETi( setpriority(PRIORITY_WHICH_T(which), who, niceval) >= 0 );
a0d0e21e
LW		 4627 RETURN;
4628#else
56a94ef2 4629 DIE(aTHX_ PL_no_func, "setpriority");
a0d0e21e
LW		 4630#endif
4631}
4632
5baa2e4f
RB		 4633#undef PRIORITY_WHICH_T
4634
a0d0e21e
LW		 4635/* Time calls. */
4636
4637PP(pp_time)
4638{
20b7effb 4639 dSP; dTARGET;
cbdc8872 4640#ifdef BIG_TIME
4608196e 4641 XPUSHn( time(NULL) );
cbdc8872 4642#else
4608196e 4643 XPUSHi( time(NULL) );
cbdc8872 4644#endif
a0d0e21e
LW		 4645 RETURN;
4646}
4647
a0d0e21e
LW		 4648PP(pp_tms)
4649{
9cad6237 4650#ifdef HAS_TIMES
39644a26 4651 dSP;
25983af4 4652 struct tms timesbuf;
a0d0e21e 4653
25983af4
NC		 4654 EXTEND(SP, 4);
4655 (void)PerlProc_times(&timesbuf);
4656
4657 mPUSHn(((NV)timesbuf.tms_utime)/(NV)PL_clocktick);
82334630 4658 if (GIMME_V == G_ARRAY) {
25983af4
NC		 4659 mPUSHn(((NV)timesbuf.tms_stime)/(NV)PL_clocktick);
4660 mPUSHn(((NV)timesbuf.tms_cutime)/(NV)PL_clocktick);
4661 mPUSHn(((NV)timesbuf.tms_cstime)/(NV)PL_clocktick);
a0d0e21e
LW		 4662 }
4663 RETURN;
9cad6237 4664#else
2f42fcb0
JH		 4665# ifdef PERL_MICRO
4666 dSP;
6e449a3a 4667 mPUSHn(0.0);
2f42fcb0 4668 EXTEND(SP, 4);
82334630 4669 if (GIMME_V == G_ARRAY) {
6e449a3a
MHM		 4670 mPUSHn(0.0);
4671 mPUSHn(0.0);
4672 mPUSHn(0.0);
2f42fcb0
JH		 4673 }
4674 RETURN;
4675# else
9cad6237 4676 DIE(aTHX_ "times not implemented");
2f42fcb0 4677# endif
55497cff 4678#endif /* HAS_TIMES */
a0d0e21e
LW		 4679}
4680
fc003d4b
MS		 4681/* The 32 bit int year limits the times we can represent to these
4682 boundaries with a few days wiggle room to account for time zone
4683 offsets
4684*/
4685/* Sat Jan 3 00:00:00 -2147481748 */
4686#define TIME_LOWER_BOUND -67768100567755200.0
4687/* Sun Dec 29 12:00:00 2147483647 */
4688#define TIME_UPPER_BOUND 67767976233316800.0
4689
b1c05ba5
DM		 4690
4691/* also used for: pp_localtime() */
4692
a0d0e21e
LW		 4693PP(pp_gmtime)
4694{
39644a26 4695 dSP;
a272e669 4696 Time64_T when;
806a119a
MS		 4697 struct TM tmbuf;
4698 struct TM *err;
a8cb0261 4699 const char *opname = PL_op->op_type == OP_LOCALTIME ? "localtime" : "gmtime";
27da23d5
JH		 4700 static const char * const dayname[] =
4701 {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
4702 static const char * const monname[] =
4703 {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
4704 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
a0d0e21e 4705
0163043a 4706 if (MAXARG < 1 || (!TOPs && ((void)POPs, 1))) {
a272e669
MS		 4707 time_t now;
4708 (void)time(&now);
4709 when = (Time64_T)now;
4710 }
7315c673 4711 else {
7eb4f9b7 4712 NV input = Perl_floor(POPn);
2b9215fd 4713 const bool pl_isnan = Perl_isnan(input);
8efababc 4714 when = (Time64_T)input;
2b9215fd 4715 if (UNLIKELY(pl_isnan || when != input)) {
dcbac5bb 4716 /* diag_listed_as: gmtime(%f) too large */
a2a5de95 4717 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
7eb4f9b7 4718 "%s(%.0" NVff ") too large", opname, input);
2b9215fd 4719 if (pl_isnan) {
d8bd3d82
FC		 4720 err = NULL;
4721 goto failed;
4722 }
7315c673
MS		 4723 }
4724 }
a0d0e21e 4725
fc003d4b 4726 if ( TIME_LOWER_BOUND > when ) {
dcbac5bb 4727 /* diag_listed_as: gmtime(%f) too small */
fc003d4b 4728 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
7eb4f9b7 4729 "%s(%.0" NVff ") too small", opname, when);
fc003d4b
MS		 4730 err = NULL;
4731 }
4732 else if( when > TIME_UPPER_BOUND ) {
dcbac5bb 4733 /* diag_listed_as: gmtime(%f) too small */
fc003d4b 4734 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
7eb4f9b7 4735 "%s(%.0" NVff ") too large", opname, when);
fc003d4b
MS		 4736 err = NULL;
4737 }
4738 else {
4739 if (PL_op->op_type == OP_LOCALTIME)
e27be216 4740 err = Perl_localtime64_r(&when, &tmbuf);
fc003d4b 4741 else
e27be216 4742 err = Perl_gmtime64_r(&when, &tmbuf);
fc003d4b 4743 }
a0d0e21e 4744
a2a5de95 4745 if (err == NULL) {
b35b96b6 4746 /* diag_listed_as: gmtime(%f) failed */
8efababc 4747 /* XXX %lld broken for quads */
d8bd3d82 4748 failed:
a2a5de95 4749 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
7eb4f9b7 4750 "%s(%.0" NVff ") failed", opname, when);
5b6366c2 4751 }
a0d0e21e 4752
82334630 4753 if (GIMME_V != G_ARRAY) { /* scalar context */
9a5ff6d9 4754 EXTEND(SP, 1);
a272e669 4755 if (err == NULL)
a0d0e21e 4756 RETPUSHUNDEF;
b35b96b6 4757 else {
d0a10fd8
FC		 4758 dTARGET;
4759 PUSHs(TARG);
4760 Perl_sv_setpvf_mg(aTHX_ TARG, "%s %s %2d %02d:%02d:%02d %"IVdf,
b35b96b6
JH		 4761 dayname[tmbuf.tm_wday],
4762 monname[tmbuf.tm_mon],
4763 tmbuf.tm_mday,
4764 tmbuf.tm_hour,
4765 tmbuf.tm_min,
4766 tmbuf.tm_sec,
d0a10fd8 4767 (IV)tmbuf.tm_year + 1900);
b35b96b6 4768 }
a0d0e21e 4769 }
a272e669
MS		 4770 else { /* list context */
4771 if ( err == NULL )
4772 RETURN;
4773
9a5ff6d9
AB		 4774 EXTEND(SP, 9);
4775 EXTEND_MORTAL(9);
a272e669
MS		 4776 mPUSHi(tmbuf.tm_sec);
4777 mPUSHi(tmbuf.tm_min);
4778 mPUSHi(tmbuf.tm_hour);
4779 mPUSHi(tmbuf.tm_mday);
4780 mPUSHi(tmbuf.tm_mon);
7315c673 4781 mPUSHn(tmbuf.tm_year);
a272e669
MS		 4782 mPUSHi(tmbuf.tm_wday);
4783 mPUSHi(tmbuf.tm_yday);
4784 mPUSHi(tmbuf.tm_isdst);
a0d0e21e
LW		 4785 }
4786 RETURN;
4787}
4788
4789PP(pp_alarm)
4790{
9cad6237 4791#ifdef HAS_ALARM
20b7effb 4792 dSP; dTARGET;
add0dc91
JH		 4793 /* alarm() takes an unsigned int number of seconds, and return the
4794 * unsigned int number of seconds remaining in the previous alarm
4795 * (alarms don't stack). Therefore negative return values are not
4796 * possible. */
4797 int anum = POPi;
4798 if (anum < 0) {
4799 /* Note that while the C library function alarm() as such has
4800 * no errors defined (or in other words, properly behaving client
4801 * code shouldn't expect any), alarm() being obsoleted by
4802 * setitimer() and often being implemented in terms of
4803 * setitimer(), can fail. */
4804 /* diag_listed_as: %s() with negative argument */
4805 Perl_ck_warner_d(aTHX_ packWARN(WARN_MISC),
4806 "alarm() with negative argument");
4807 SETERRNO(EINVAL, LIB_INVARG);
4808 RETPUSHUNDEF;
4809 }
4810 else {
4811 unsigned int retval = alarm(anum);
4812 if ((int)retval < 0) /* Strictly speaking "cannot happen". */
4813 RETPUSHUNDEF;
4814 PUSHu(retval);
4815 RETURN;
4816 }
a0d0e21e 4817#else
0322a713 4818 DIE(aTHX_ PL_no_func, "alarm");
a0d0e21e
LW		 4819#endif
4820}
4821
4822PP(pp_sleep)
4823{
20b7effb 4824 dSP; dTARGET;
a0d0e21e
LW		 4825 I32 duration;
4826 Time_t lasttime;
4827 Time_t when;
4828
4829 (void)time(&lasttime);
0da4a804 4830 if (MAXARG < 1 || (!TOPs && !POPs))
76e3520e 4831 PerlProc_pause();
a0d0e21e
LW		 4832 else {
4833 duration = POPi;
393bc9b3
JH		 4834 if (duration < 0) {
4835 /* diag_listed_as: %s() with negative argument */
4836 Perl_ck_warner_d(aTHX_ packWARN(WARN_MISC),
4837 "sleep() with negative argument");
4838 SETERRNO(EINVAL, LIB_INVARG);
4839 XPUSHi(0);
4840 RETURN;
4841 } else {
4842 PerlProc_sleep((unsigned int)duration);
4843 }
a0d0e21e
LW		 4844 }
4845 (void)time(&when);
4846 XPUSHi(when - lasttime);
4847 RETURN;
4848}
4849
4850/* Shared memory. */
c9f7ac20 4851/* Merged with some message passing. */
a0d0e21e 4852
b1c05ba5
DM		 4853/* also used for: pp_msgrcv() pp_msgsnd() pp_semop() pp_shmread() */
4854
a0d0e21e
LW		 4855PP(pp_shmwrite)
4856{
4857#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
20b7effb 4858 dSP; dMARK; dTARGET;
c9f7ac20
NC		 4859 const int op_type = PL_op->op_type;
4860 I32 value;
a0d0e21e 4861
c9f7ac20
NC		 4862 switch (op_type) {
4863 case OP_MSGSND:
4864 value = (I32)(do_msgsnd(MARK, SP) >= 0);
4865 break;
4866 case OP_MSGRCV:
4867 value = (I32)(do_msgrcv(MARK, SP) >= 0);
4868 break;
ca563b4e
NC		 4869 case OP_SEMOP:
4870 value = (I32)(do_semop(MARK, SP) >= 0);
4871 break;
c9f7ac20
NC		 4872 default:
4873 value = (I32)(do_shmio(op_type, MARK, SP) >= 0);
4874 break;
4875 }
a0d0e21e 4876
a0d0e21e
LW		 4877 SP = MARK;
4878 PUSHi(value);
4879 RETURN;
4880#else
897d3989 4881 return Perl_pp_semget(aTHX);
a0d0e21e
LW		 4882#endif
4883}
4884
4885/* Semaphores. */
4886
b1c05ba5
DM		 4887/* also used for: pp_msgget() pp_shmget() */
4888
a0d0e21e
LW		 4889PP(pp_semget)
4890{
4891#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
20b7effb 4892 dSP; dMARK; dTARGET;
0bcc34c2 4893 const int anum = do_ipcget(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 4894 SP = MARK;
4895 if (anum == -1)
4896 RETPUSHUNDEF;
4897 PUSHi(anum);
4898 RETURN;
4899#else
cea2e8a9 4900 DIE(aTHX_ "System V IPC is not implemented on this machine");
a0d0e21e
LW		 4901#endif
4902}
4903
b1c05ba5
DM		 4904/* also used for: pp_msgctl() pp_shmctl() */
4905
a0d0e21e
LW		 4906PP(pp_semctl)
4907{
4908#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
20b7effb 4909 dSP; dMARK; dTARGET;
0bcc34c2 4910 const int anum = do_ipcctl(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 4911 SP = MARK;
4912 if (anum == -1)
fa367bcb 4913 RETPUSHUNDEF;
a0d0e21e
LW		 4914 if (anum != 0) {
4915 PUSHi(anum);
4916 }
4917 else {
8903cb82 4918 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e
LW		 4919 }
4920 RETURN;
4921#else
897d3989 4922 return Perl_pp_semget(aTHX);
a0d0e21e
LW		 4923#endif
4924}
4925
5cdc4e88
NC		 4926/* I can't const this further without getting warnings about the types of
4927 various arrays passed in from structures. */
4928static SV *
4929S_space_join_names_mortal(pTHX_ char *const *array)
4930{
7c58897d 4931 SV *target;
5cdc4e88 4932
d35c1b5e 4933 if (array && *array) {
84bafc02 4934 target = newSVpvs_flags("", SVs_TEMP);
5cdc4e88
NC		 4935 while (1) {
4936 sv_catpv(target, *array);
4937 if (!*++array)
4938 break;
4939 sv_catpvs(target, " ");
4940 }
7c58897d
NC		 4941 } else {
4942 target = sv_mortalcopy(&PL_sv_no);
5cdc4e88
NC		 4943 }
4944 return target;
4945}
4946
a0d0e21e
LW		 4947/* Get system info. */
4948
b1c05ba5
DM		 4949/* also used for: pp_ghbyaddr() pp_ghbyname() */
4950
a0d0e21e
LW		 4951PP(pp_ghostent)
4952{
693762b4 4953#if defined(HAS_GETHOSTBYNAME) || defined(HAS_GETHOSTBYADDR) || defined(HAS_GETHOSTENT)
20b7effb 4954 dSP;
533c011a 4955 I32 which = PL_op->op_type;
eb578fdb
KW		 4956 char **elem;
4957 SV *sv;
dc45a647 4958#ifndef HAS_GETHOST_PROTOS /* XXX Do we need individual probes? */
1d88b533
JH		 4959 struct hostent *gethostbyaddr(Netdb_host_t, Netdb_hlen_t, int);
4960 struct hostent *gethostbyname(Netdb_name_t);
4961 struct hostent *gethostent(void);
a0d0e21e 4962#endif
07822e36 4963 struct hostent *hent = NULL;
a0d0e21e
LW		 4964 unsigned long len;
4965
4966 EXTEND(SP, 10);
edd309b7 4967 if (which == OP_GHBYNAME) {
dc45a647 4968#ifdef HAS_GETHOSTBYNAME
0bcc34c2 4969 const char* const name = POPpbytex;
edd309b7 4970 hent = PerlSock_gethostbyname(name);
dc45a647 4971#else
cea2e8a9 4972 DIE(aTHX_ PL_no_sock_func, "gethostbyname");
dc45a647 4973#endif
edd309b7 4974 }
a0d0e21e 4975 else if (which == OP_GHBYADDR) {
dc45a647 4976#ifdef HAS_GETHOSTBYADDR
0bcc34c2
AL		 4977 const int addrtype = POPi;
4978 SV * const addrsv = POPs;
a0d0e21e 4979 STRLEN addrlen;
48fc4736 4980 const char *addr = (char *)SvPVbyte(addrsv, addrlen);
a0d0e21e 4981
48fc4736 4982 hent = PerlSock_gethostbyaddr(addr, (Netdb_hlen_t) addrlen, addrtype);
dc45a647 4983#else
cea2e8a9 4984 DIE(aTHX_ PL_no_sock_func, "gethostbyaddr");
dc45a647 4985#endif
a0d0e21e
LW		 4986 }
4987 else
4988#ifdef HAS_GETHOSTENT
6ad3d225 4989 hent = PerlSock_gethostent();
a0d0e21e 4990#else
cea2e8a9 4991 DIE(aTHX_ PL_no_sock_func, "gethostent");
a0d0e21e
LW		 4992#endif
4993
4994#ifdef HOST_NOT_FOUND
10bc17b6
JH		 4995 if (!hent) {
4996#ifdef USE_REENTRANT_API
4997# ifdef USE_GETHOSTENT_ERRNO
4998 h_errno = PL_reentrant_buffer->_gethostent_errno;
4999# endif
5000#endif
37038d91 5001 STATUS_UNIX_SET(h_errno);
10bc17b6 5002 }
a0d0e21e
LW		 5003#endif
5004
82334630 5005 if (GIMME_V != G_ARRAY) {
a0d0e21e
LW		 5006 PUSHs(sv = sv_newmortal());
5007 if (hent) {
5008 if (which == OP_GHBYNAME) {
fd0af264 5009 if (hent->h_addr)
5010 sv_setpvn(sv, hent->h_addr, hent->h_length);
a0d0e21e
LW		 5011 }
5012 else
5013 sv_setpv(sv, (char*)hent->h_name);
5014 }
5015 RETURN;
5016 }
5017
5018 if (hent) {
6e449a3a 5019 mPUSHs(newSVpv((char*)hent->h_name, 0));
931e0695 5020 PUSHs(space_join_names_mortal(hent->h_aliases));
6e449a3a 5021 mPUSHi(hent->h_addrtype);
a0d0e21e 5022 len = hent->h_length;
6e449a3a 5023 mPUSHi(len);
a0d0e21e
LW		 5024#ifdef h_addr
5025 for (elem = hent->h_addr_list; elem && *elem; elem++) {
6e449a3a 5026 mXPUSHp(*elem, len);
a0d0e21e
LW		 5027 }
5028#else
fd0af264 5029 if (hent->h_addr)
22f1178f 5030 mPUSHp(hent->h_addr, len);
7c58897d
NC		 5031 else
5032 PUSHs(sv_mortalcopy(&PL_sv_no));
a0d0e21e
LW		 5033#endif /* h_addr */
5034 }
5035 RETURN;
5036#else
7844cc62 5037 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 5038#endif
5039}
5040
b1c05ba5
DM		 5041/* also used for: pp_gnbyaddr() pp_gnbyname() */
5042
a0d0e21e
LW		 5043PP(pp_gnetent)
5044{
693762b4 5045#if defined(HAS_GETNETBYNAME) || defined(HAS_GETNETBYADDR) || defined(HAS_GETNETENT)
20b7effb 5046 dSP;
533c011a 5047 I32 which = PL_op->op_type;
eb578fdb 5048 SV *sv;
dc45a647 5049#ifndef HAS_GETNET_PROTOS /* XXX Do we need individual probes? */
1d88b533
JH		 5050 struct netent *getnetbyaddr(Netdb_net_t, int);
5051 struct netent *getnetbyname(Netdb_name_t);
5052 struct netent *getnetent(void);
8ac85365 5053#endif
a0d0e21e
LW		 5054 struct netent *nent;
5055
edd309b7 5056 if (which == OP_GNBYNAME){
dc45a647 5057#ifdef HAS_GETNETBYNAME
0bcc34c2 5058 const char * const name = POPpbytex;
edd309b7 5059 nent = PerlSock_getnetbyname(name);
dc45a647 5060#else
cea2e8a9 5061 DIE(aTHX_ PL_no_sock_func, "getnetbyname");
dc45a647 5062#endif
edd309b7 5063 }
a0d0e21e 5064 else if (which == OP_GNBYADDR) {
dc45a647 5065#ifdef HAS_GETNETBYADDR
0bcc34c2
AL		 5066 const int addrtype = POPi;
5067 const Netdb_net_t addr = (Netdb_net_t) (U32)POPu;
76e3520e 5068 nent = PerlSock_getnetbyaddr(addr, addrtype);
dc45a647 5069#else
cea2e8a9 5070 DIE(aTHX_ PL_no_sock_func, "getnetbyaddr");
dc45a647 5071#endif
a0d0e21e
LW		 5072 }
5073 else
dc45a647 5074#ifdef HAS_GETNETENT
76e3520e 5075 nent = PerlSock_getnetent();
dc45a647 5076#else
cea2e8a9 5077 DIE(aTHX_ PL_no_sock_func, "getnetent");
dc45a647 5078#endif
a0d0e21e 5079
10bc17b6
JH		 5080#ifdef HOST_NOT_FOUND
5081 if (!nent) {
5082#ifdef USE_REENTRANT_API
5083# ifdef USE_GETNETENT_ERRNO
5084 h_errno = PL_reentrant_buffer->_getnetent_errno;
5085# endif
5086#endif
37038d91 5087 STATUS_UNIX_SET(h_errno);
10bc17b6
JH		 5088 }
5089#endif
5090
a0d0e21e 5091 EXTEND(SP, 4);
82334630 5092 if (GIMME_V != G_ARRAY) {
a0d0e21e
LW		 5093 PUSHs(sv = sv_newmortal());
5094 if (nent) {
5095 if (which == OP_GNBYNAME)
1e422769 5096 sv_setiv(sv, (IV)nent->n_net);
a0d0e21e
LW		 5097 else
5098 sv_setpv(sv, nent->n_name);
5099 }
5100 RETURN;
5101 }
5102
5103 if (nent) {
6e449a3a 5104 mPUSHs(newSVpv(nent->n_name, 0));
931e0695 5105 PUSHs(space_join_names_mortal(nent->n_aliases));
6e449a3a
MHM		 5106 mPUSHi(nent->n_addrtype);
5107 mPUSHi(nent->n_net);
a0d0e21e
LW		 5108 }
5109
5110 RETURN;
5111#else
7844cc62 5112 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 5113#endif
5114}
5115
b1c05ba5
DM		 5116
5117/* also used for: pp_gpbyname() pp_gpbynumber() */
5118
a0d0e21e
LW		 5119PP(pp_gprotoent)
5120{
693762b4 5121#if defined(HAS_GETPROTOBYNAME) || defined(HAS_GETPROTOBYNUMBER) || defined(HAS_GETPROTOENT)
20b7effb 5122 dSP;
533c011a 5123 I32 which = PL_op->op_type;
eb578fdb 5124 SV *sv;
dc45a647 5125#ifndef HAS_GETPROTO_PROTOS /* XXX Do we need individual probes? */
1d88b533
JH		 5126 struct protoent *getprotobyname(Netdb_name_t);
5127 struct protoent *getprotobynumber(int);
5128 struct protoent *getprotoent(void);
8ac85365 5129#endif
a0d0e21e
LW		 5130 struct protoent *pent;
5131
edd309b7 5132 if (which == OP_GPBYNAME) {
e5c9fcd0 5133#ifdef HAS_GETPROTOBYNAME
0bcc34c2 5134 const char* const name = POPpbytex;
edd309b7 5135 pent = PerlSock_getprotobyname(name);
e5c9fcd0 5136#else
cea2e8a9 5137 DIE(aTHX_ PL_no_sock_func, "getprotobyname");
e5c9fcd0 5138#endif
edd309b7
JH		 5139 }
5140 else if (which == OP_GPBYNUMBER) {
e5c9fcd0 5141#ifdef HAS_GETPROTOBYNUMBER
0bcc34c2 5142 const int number = POPi;
edd309b7 5143 pent = PerlSock_getprotobynumber(number);
e5c9fcd0 5144#else
edd309b7 5145 DIE(aTHX_ PL_no_sock_func, "getprotobynumber");
e5c9fcd0 5146#endif
edd309b7 5147 }
a0d0e21e 5148 else
e5c9fcd0 5149#ifdef HAS_GETPROTOENT
6ad3d225 5150 pent = PerlSock_getprotoent();
e5c9fcd0 5151#else
cea2e8a9 5152 DIE(aTHX_ PL_no_sock_func, "getprotoent");
e5c9fcd0 5153#endif
a0d0e21e
LW		 5154
5155 EXTEND(SP, 3);
82334630 5156 if (GIMME_V != G_ARRAY) {
a0d0e21e
LW		 5157 PUSHs(sv = sv_newmortal());
5158 if (pent) {
5159 if (which == OP_GPBYNAME)
1e422769 5160 sv_setiv(sv, (IV)pent->p_proto);
a0d0e21e
LW		 5161 else
5162 sv_setpv(sv, pent->p_name);
5163 }
5164 RETURN;
5165 }
5166
5167 if (pent) {
6e449a3a 5168 mPUSHs(newSVpv(pent->p_name, 0));
931e0695 5169 PUSHs(space_join_names_mortal(pent->p_aliases));
6e449a3a 5170 mPUSHi(pent->p_proto);
a0d0e21e
LW		 5171 }
5172
5173 RETURN;
5174#else
7844cc62 5175 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 5176#endif
5177}
5178
b1c05ba5
DM		 5179
5180/* also used for: pp_gsbyname() pp_gsbyport() */
5181
a0d0e21e
LW		 5182PP(pp_gservent)
5183{
693762b4 5184#if defined(HAS_GETSERVBYNAME) || defined(HAS_GETSERVBYPORT) || defined(HAS_GETSERVENT)
20b7effb 5185 dSP;
533c011a 5186 I32 which = PL_op->op_type;
eb578fdb 5187 SV *sv;
dc45a647 5188#ifndef HAS_GETSERV_PROTOS /* XXX Do we need individual probes? */
1d88b533
JH		 5189 struct servent *getservbyname(Netdb_name_t, Netdb_name_t);
5190 struct servent *getservbyport(int, Netdb_name_t);
5191 struct servent *getservent(void);
8ac85365 5192#endif
a0d0e21e
LW		 5193 struct servent *sent;
5194
5195 if (which == OP_GSBYNAME) {
dc45a647 5196#ifdef HAS_GETSERVBYNAME
0bcc34c2
AL		 5197 const char * const proto = POPpbytex;
5198 const char * const name = POPpbytex;
bd61b366 5199 sent = PerlSock_getservbyname(name, (proto && !*proto) ? NULL : proto);
dc45a647 5200#else
cea2e8a9 5201 DIE(aTHX_ PL_no_sock_func, "getservbyname");
dc45a647 5202#endif
a0d0e21e
LW		 5203 }
5204 else if (which == OP_GSBYPORT) {
dc45a647 5205#ifdef HAS_GETSERVBYPORT
0bcc34c2 5206 const char * const proto = POPpbytex;
eb160463 5207 unsigned short port = (unsigned short)POPu;
6ad3d225 5208 port = PerlSock_htons(port);
bd61b366 5209 sent = PerlSock_getservbyport(port, (proto && !*proto) ? NULL : proto);
dc45a647 5210#else
cea2e8a9 5211 DIE(aTHX_ PL_no_sock_func, "getservbyport");
dc45a647 5212#endif
a0d0e21e
LW		 5213 }
5214 else
e5c9fcd0 5215#ifdef HAS_GETSERVENT
6ad3d225 5216 sent = PerlSock_getservent();
e5c9fcd0 5217#else
cea2e8a9 5218 DIE(aTHX_ PL_no_sock_func, "getservent");
e5c9fcd0 5219#endif
a0d0e21e
LW		 5220
5221 EXTEND(SP, 4);
82334630 5222 if (GIMME_V != G_ARRAY) {
a0d0e21e
LW		 5223 PUSHs(sv = sv_newmortal());
5224 if (sent) {
5225 if (which == OP_GSBYNAME) {
6ad3d225 5226 sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
a0d0e21e
LW		 5227 }
5228 else
5229 sv_setpv(sv, sent->s_name);
5230 }
5231 RETURN;
5232 }
5233
5234 if (sent) {
6e449a3a 5235 mPUSHs(newSVpv(sent->s_name, 0));
931e0695 5236 PUSHs(space_join_names_mortal(sent->s_aliases));
6e449a3a 5237 mPUSHi(PerlSock_ntohs(sent->s_port));
6e449a3a 5238 mPUSHs(newSVpv(sent->s_proto, 0));
a0d0e21e
LW		 5239 }
5240
5241 RETURN;
5242#else
7844cc62 5243 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 5244#endif
5245}
5246
b1c05ba5
DM		 5247
5248/* also used for: pp_snetent() pp_sprotoent() pp_sservent() */
5249
a0d0e21e
LW		 5250PP(pp_shostent)
5251{
20b7effb 5252 dSP;
396166e1
NC		 5253 const int stayopen = TOPi;
5254 switch(PL_op->op_type) {
5255 case OP_SHOSTENT:
5256#ifdef HAS_SETHOSTENT
5257 PerlSock_sethostent(stayopen);
a0d0e21e 5258#else
396166e1 5259 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e 5260#endif
396166e1 5261 break;
693762b4 5262#ifdef HAS_SETNETENT
396166e1
NC		 5263 case OP_SNETENT:
5264 PerlSock_setnetent(stayopen);
a0d0e21e 5265#else
396166e1 5266 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e 5267#endif
396166e1
NC		 5268 break;
5269 case OP_SPROTOENT:
693762b4 5270#ifdef HAS_SETPROTOENT
396166e1 5271 PerlSock_setprotoent(stayopen);
a0d0e21e 5272#else
396166e1 5273 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e 5274#endif
396166e1
NC		 5275 break;
5276 case OP_SSERVENT:
693762b4 5277#ifdef HAS_SETSERVENT
396166e1 5278 PerlSock_setservent(stayopen);
a0d0e21e 5279#else
396166e1 5280 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e 5281#endif
396166e1
NC		 5282 break;
5283 }
5284 RETSETYES;
a0d0e21e
LW		 5285}
5286
b1c05ba5
DM		 5287
5288/* also used for: pp_egrent() pp_enetent() pp_eprotoent() pp_epwent()
5289 * pp_eservent() pp_sgrent() pp_spwent() */
5290
a0d0e21e
LW		 5291PP(pp_ehostent)
5292{
20b7effb 5293 dSP;
d8ef1fcd
NC		 5294 switch(PL_op->op_type) {
5295 case OP_EHOSTENT:
5296#ifdef HAS_ENDHOSTENT
5297 PerlSock_endhostent();
a0d0e21e 5298#else
d8ef1fcd 5299 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e 5300#endif
d8ef1fcd
NC		 5301 break;
5302 case OP_ENETENT:
693762b4 5303#ifdef HAS_ENDNETENT
d8ef1fcd 5304 PerlSock_endnetent();
a0d0e21e 5305#else
d8ef1fcd 5306 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e 5307#endif
d8ef1fcd
NC		 5308 break;
5309 case OP_EPROTOENT:
693762b4 5310#ifdef HAS_ENDPROTOENT
d8ef1fcd 5311 PerlSock_endprotoent();
a0d0e21e 5312#else
d8ef1fcd 5313 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e 5314#endif
d8ef1fcd
NC		 5315 break;
5316 case OP_ESERVENT:
693762b4 5317#ifdef HAS_ENDSERVENT
d8ef1fcd 5318 PerlSock_endservent();
a0d0e21e 5319#else
d8ef1fcd 5320 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e 5321#endif
d8ef1fcd 5322 break;
720d5dbf
NC		 5323 case OP_SGRENT:
5324#if defined(HAS_GROUP) && defined(HAS_SETGRENT)
5325 setgrent();
5326#else
5327 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5328#endif
5329 break;
5330 case OP_EGRENT:
5331#if defined(HAS_GROUP) && defined(HAS_ENDGRENT)
5332 endgrent();
5333#else
5334 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5335#endif
5336 break;
5337 case OP_SPWENT:
5338#if defined(HAS_PASSWD) && defined(HAS_SETPWENT)
5339 setpwent();
5340#else
5341 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5342#endif
5343 break;
5344 case OP_EPWENT:
5345#if defined(HAS_PASSWD) && defined(HAS_ENDPWENT)
5346 endpwent();
5347#else
5348 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5349#endif
5350 break;
d8ef1fcd
NC		 5351 }
5352 EXTEND(SP,1);
5353 RETPUSHYES;
a0d0e21e
LW		 5354}
5355
b1c05ba5
DM		 5356
5357/* also used for: pp_gpwnam() pp_gpwuid() */
5358
a0d0e21e
LW		 5359PP(pp_gpwent)
5360{
0994c4d0 5361#ifdef HAS_PASSWD
20b7effb 5362 dSP;
533c011a 5363 I32 which = PL_op->op_type;
eb578fdb 5364 SV *sv;
e3aefe8d 5365 struct passwd *pwent = NULL;
301e8125 5366 /*
bcf53261
JH		 5367 * We currently support only the SysV getsp* shadow password interface.
5368 * The interface is declared in <shadow.h> and often one needs to link
5369 * with -lsecurity or some such.
5370 * This interface is used at least by Solaris, HP-UX, IRIX, and Linux.
5371 * (and SCO?)
5372 *
5373 * AIX getpwnam() is clever enough to return the encrypted password
5374 * only if the caller (euid?) is root.
5375 *
e549f1c5 5376 * There are at least three other shadow password APIs. Many platforms
bcf53261
JH		 5377 * seem to contain more than one interface for accessing the shadow
5378 * password databases, possibly for compatibility reasons.
3813c136 5379 * The getsp*() is by far he simplest one, the other two interfaces
bcf53261
JH		 5380 * are much more complicated, but also very similar to each other.
5381 *
5382 * <sys/types.h>
5383 * <sys/security.h>
5384 * <prot.h>
5385 * struct pr_passwd *getprpw*();
5386 * The password is in
3813c136
JH		 5387 * char getprpw*(...).ufld.fd_encrypt[]
5388 * Mention HAS_GETPRPWNAM here so that Configure probes for it.
bcf53261
JH		 5389 *
5390 * <sys/types.h>
5391 * <sys/security.h>
5392 * <prot.h>
5393 * struct es_passwd *getespw*();
5394 * The password is in
5395 * char *(getespw*(...).ufld.fd_encrypt)
3813c136 5396 * Mention HAS_GETESPWNAM here so that Configure probes for it.
bcf53261 5397 *
e1920a95 5398 * <userpw.h> (AIX)
e549f1c5
JH		 5399 * struct userpw *getuserpw();
5400 * The password is in
5401 * char *(getuserpw(...)).spw_upw_passwd
5402 * (but the de facto standard getpwnam() should work okay)
5403 *
3813c136 5404 * Mention I_PROT here so that Configure probes for it.
bcf53261
JH		 5405 *
5406 * In HP-UX for getprpw*() the manual page claims that one should include
5407 * <hpsecurity.h> instead of <sys/security.h>, but that is not needed
5408 * if one includes <shadow.h> as that includes <hpsecurity.h>,
5409 * and pp_sys.c already includes <shadow.h> if there is such.
3813c136
JH		 5410 *
5411 * Note that <sys/security.h> is already probed for, but currently
5412 * it is only included in special cases.
301e8125 5413 *
bcf53261
JH		 5414 * In Digital UNIX/Tru64 if using the getespw*() (which seems to be
5415 * be preferred interface, even though also the getprpw*() interface
5416 * is available) one needs to link with -lsecurity -ldb -laud -lm.
3813c136
JH		 5417 * One also needs to call set_auth_parameters() in main() before
5418 * doing anything else, whether one is using getespw*() or getprpw*().
5419 *
5420 * Note that accessing the shadow databases can be magnitudes
5421 * slower than accessing the standard databases.
bcf53261
JH		 5422 *
5423 * --jhi
5424 */
a0d0e21e 5425
9e5f0c48
JH		 5426# if defined(__CYGWIN__) && defined(USE_REENTRANT_API)
5427 /* Cygwin 1.5.3-1 has buggy getpwnam_r() and getpwuid_r():
5428 * the pw_comment is left uninitialized. */
5429 PL_reentrant_buffer->_pwent_struct.pw_comment = NULL;
5430# endif
5431
e3aefe8d
JH		 5432 switch (which) {
5433 case OP_GPWNAM:
edd309b7 5434 {
0bcc34c2 5435 const char* const name = POPpbytex;
edd309b7
JH		 5436 pwent = getpwnam(name);
5437 }
5438 break;
e3aefe8d 5439 case OP_GPWUID:
edd309b7
JH		 5440 {
5441 Uid_t uid = POPi;
5442 pwent = getpwuid(uid);
5443 }
e3aefe8d
JH		 5444 break;
5445 case OP_GPWENT:
1883634f 5446# ifdef HAS_GETPWENT
e3aefe8d 5447 pwent = getpwent();
faea9016
IRC		 5448#ifdef POSIX_BC /* In some cases pw_passwd has invalid addresses */
5449 if (pwent) pwent = getpwnam(pwent->pw_name);
5450#endif
1883634f 5451# else
a45d1c96 5452 DIE(aTHX_ PL_no_func, "getpwent");
1883634f 5453# endif
e3aefe8d
JH		 5454 break;
5455 }
8c0bfa08 5456
a0d0e21e 5457 EXTEND(SP, 10);
82334630 5458 if (GIMME_V != G_ARRAY) {
a0d0e21e
LW		 5459 PUSHs(sv = sv_newmortal());
5460 if (pwent) {
5461 if (which == OP_GPWNAM)
dfff4baf 5462 sv_setuid(sv, pwent->pw_uid);
a0d0e21e
LW		 5463 else
5464 sv_setpv(sv, pwent->pw_name);
5465 }
5466 RETURN;
5467 }
5468
5469 if (pwent) {
6e449a3a 5470 mPUSHs(newSVpv(pwent->pw_name, 0));
6ee623d5 5471
6e449a3a
MHM		 5472 sv = newSViv(0);
5473 mPUSHs(sv);
3813c136
JH		 5474 /* If we have getspnam(), we try to dig up the shadow
5475 * password. If we are underprivileged, the shadow
5476 * interface will set the errno to EACCES or similar,
5477 * and return a null pointer. If this happens, we will
5478 * use the dummy password (usually "*" or "x") from the
5479 * standard password database.
5480 *
5481 * In theory we could skip the shadow call completely
5482 * if euid != 0 but in practice we cannot know which
5483 * security measures are guarding the shadow databases
5484 * on a random platform.
5485 *
5486 * Resist the urge to use additional shadow interfaces.
5487 * Divert the urge to writing an extension instead.
5488 *
5489 * --jhi */
e549f1c5
JH		 5490 /* Some AIX setups falsely(?) detect some getspnam(), which
5491 * has a different API than the Solaris/IRIX one. */
5492# if defined(HAS_GETSPNAM) && !defined(_AIX)
3813c136 5493 {
4ee39169 5494 dSAVE_ERRNO;
0bcc34c2
AL		 5495 const struct spwd * const spwent = getspnam(pwent->pw_name);
5496 /* Save and restore errno so that
3813c136 5497 * underprivileged attempts seem
486ec47a 5498 * to have never made the unsuccessful
3813c136 5499 * attempt to retrieve the shadow password. */
4ee39169 5500 RESTORE_ERRNO;
3813c136
JH		 5501 if (spwent && spwent->sp_pwdp)
5502 sv_setpv(sv, spwent->sp_pwdp);
5503 }
f1066039 5504# endif
e020c87d 5505# ifdef PWPASSWD
3813c136
JH		 5506 if (!SvPOK(sv)) /* Use the standard password, then. */
5507 sv_setpv(sv, pwent->pw_passwd);
e020c87d 5508# endif
3813c136 5509
3813c136
JH		 5510 /* passwd is tainted because user himself can diddle with it.
5511 * admittedly not much and in a very limited way, but nevertheless. */
2959b6e3 5512 SvTAINTED_on(sv);
6ee623d5 5513
dfff4baf
BF		 5514 sv_setuid(PUSHmortal, pwent->pw_uid);
5515 sv_setgid(PUSHmortal, pwent->pw_gid);
6ee623d5 5516
3813c136
JH		 5517 /* pw_change, pw_quota, and pw_age are mutually exclusive--
5518 * because of the poor interface of the Perl getpw*(),
5519 * not because there's some standard/convention saying so.
5520 * A better interface would have been to return a hash,
5521 * but we are accursed by our history, alas. --jhi. */
1883634f 5522# ifdef PWCHANGE
6e449a3a 5523 mPUSHi(pwent->pw_change);
6ee623d5 5524# else
1883634f 5525# ifdef PWQUOTA
6e449a3a 5526 mPUSHi(pwent->pw_quota);
1883634f 5527# else
a1757be1 5528# ifdef PWAGE
6e449a3a 5529 mPUSHs(newSVpv(pwent->pw_age, 0));
7c58897d
NC		 5530# else
5531 /* I think that you can never get this compiled, but just in case. */
5532 PUSHs(sv_mortalcopy(&PL_sv_no));
a1757be1 5533# endif
6ee623d5
GS		 5534# endif
5535# endif
6ee623d5 5536
3813c136
JH		 5537 /* pw_class and pw_comment are mutually exclusive--.
5538 * see the above note for pw_change, pw_quota, and pw_age. */
1883634f 5539# ifdef PWCLASS
6e449a3a 5540 mPUSHs(newSVpv(pwent->pw_class, 0));
1883634f
JH		 5541# else
5542# ifdef PWCOMMENT
6e449a3a 5543 mPUSHs(newSVpv(pwent->pw_comment, 0));
7c58897d
NC		 5544# else
5545 /* I think that you can never get this compiled, but just in case. */
5546 PUSHs(sv_mortalcopy(&PL_sv_no));
1883634f 5547# endif
6ee623d5 5548# endif
6ee623d5 5549
1883634f 5550# ifdef PWGECOS
7c58897d
NC		 5551 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_gecos, 0)));
5552# else
c4c533cb 5553 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
1883634f 5554# endif
d2719217 5555 /* pw_gecos is tainted because user himself can diddle with it. */
fb73857a 5556 SvTAINTED_on(sv);
6ee623d5 5557
6e449a3a 5558 mPUSHs(newSVpv(pwent->pw_dir, 0));
6ee623d5 5559
7c58897d 5560 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_shell, 0)));
4602f195
JH		 5561 /* pw_shell is tainted because user himself can diddle with it. */
5562 SvTAINTED_on(sv);
6ee623d5 5563
1883634f 5564# ifdef PWEXPIRE
6e449a3a 5565 mPUSHi(pwent->pw_expire);
1883634f 5566# endif
a0d0e21e
LW		 5567 }
5568 RETURN;
5569#else
af51a00e 5570 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 5571#endif
5572}
5573
b1c05ba5
DM		 5574
5575/* also used for: pp_ggrgid() pp_ggrnam() */
5576
a0d0e21e
LW		 5577PP(pp_ggrent)
5578{
0994c4d0 5579#ifdef HAS_GROUP
20b7effb 5580 dSP;
6136c704
AL		 5581 const I32 which = PL_op->op_type;
5582 const struct group *grent;
a0d0e21e 5583
edd309b7 5584 if (which == OP_GGRNAM) {
0bcc34c2 5585 const char* const name = POPpbytex;
6136c704 5586 grent = (const struct group *)getgrnam(name);
edd309b7
JH		 5587 }
5588 else if (which == OP_GGRGID) {
ee17bffd
JH		 5589#if Gid_t_sign == 1
5590 const Gid_t gid = POPu;
5591#elif Gid_t_sign == -1
0bcc34c2 5592 const Gid_t gid = POPi;
ee17bffd
JH		 5593#else
5594# error "Unexpected Gid_t_sign"
5595#endif
6136c704 5596 grent = (const struct group *)getgrgid(gid);
edd309b7 5597 }
a0d0e21e 5598 else
0994c4d0 5599#ifdef HAS_GETGRENT
a0d0e21e 5600 grent = (struct group *)getgrent();
0994c4d0
JH		 5601#else
5602 DIE(aTHX_ PL_no_func, "getgrent");
5603#endif
a0d0e21e
LW		 5604
5605 EXTEND(SP, 4);
82334630 5606 if (GIMME_V != G_ARRAY) {
6136c704
AL		 5607 SV * const sv = sv_newmortal();
5608
5609 PUSHs(sv);
a0d0e21e
LW		 5610 if (grent) {
5611 if (which == OP_GGRNAM)
dfff4baf 5612 sv_setgid(sv, grent->gr_gid);
a0d0e21e
LW		 5613 else
5614 sv_setpv(sv, grent->gr_name);
5615 }
5616 RETURN;
5617 }
5618
5619 if (grent) {
6e449a3a 5620 mPUSHs(newSVpv(grent->gr_name, 0));
28e8609d 5621
28e8609d 5622#ifdef GRPASSWD
6e449a3a 5623 mPUSHs(newSVpv(grent->gr_passwd, 0));
7c58897d
NC		 5624#else
5625 PUSHs(sv_mortalcopy(&PL_sv_no));
28e8609d
JH		 5626#endif
5627
dfff4baf 5628 sv_setgid(PUSHmortal, grent->gr_gid);
28e8609d 5629
5b56e7c5 5630#if !(defined(_CRAYMPP) && defined(USE_REENTRANT_API))
3d7e8424
JH		 5631 /* In UNICOS/mk (_CRAYMPP) the multithreading
5632 * versions (getgrnam_r, getgrgid_r)
5633 * seem to return an illegal pointer
5634 * as the group members list, gr_mem.
5635 * getgrent() doesn't even have a _r version
5636 * but the gr_mem is poisonous anyway.
5637 * So yes, you cannot get the list of group
5638 * members if building multithreaded in UNICOS/mk. */
931e0695 5639 PUSHs(space_join_names_mortal(grent->gr_mem));
3d7e8424 5640#endif
a0d0e21e
LW		 5641 }
5642
5643 RETURN;
5644#else
af51a00e 5645 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 5646#endif
5647}
5648
a0d0e21e
LW		 5649PP(pp_getlogin)
5650{
a0d0e21e 5651#ifdef HAS_GETLOGIN
20b7effb 5652 dSP; dTARGET;
a0d0e21e
LW		 5653 char *tmps;
5654 EXTEND(SP, 1);
76e3520e 5655 if (!(tmps = PerlProc_getlogin()))
a0d0e21e 5656 RETPUSHUNDEF;
bee8aa44
NC		 5657 sv_setpv_mg(TARG, tmps);
5658 PUSHs(TARG);
a0d0e21e
LW		 5659 RETURN;
5660#else
cea2e8a9 5661 DIE(aTHX_ PL_no_func, "getlogin");
a0d0e21e
LW		 5662#endif
5663}
5664
5665/* Miscellaneous. */
5666
5667PP(pp_syscall)
5668{
d2719217 5669#ifdef HAS_SYSCALL
20b7effb 5670 dSP; dMARK; dORIGMARK; dTARGET;
eb578fdb 5671 I32 items = SP - MARK;
a0d0e21e 5672 unsigned long a[20];
eb578fdb 5673 I32 i = 0;
f9344c91 5674 IV retval = -1;
a0d0e21e 5675
284167a5 5676 if (TAINTING_get) {
a0d0e21e 5677 while (++MARK <= SP) {
bbce6d69 5678 if (SvTAINTED(*MARK)) {
5679 TAINT;
5680 break;
5681 }
a0d0e21e
LW		 5682 }
5683 MARK = ORIGMARK;
5684 TAINT_PROPER("syscall");
5685 }
5686
5687 /* This probably won't work on machines where sizeof(long) != sizeof(int)
5688 * or where sizeof(long) != sizeof(char*). But such machines will
5689 * not likely have syscall implemented either, so who cares?
5690 */
5691 while (++MARK <= SP) {
5692 if (SvNIOK(*MARK) || !i)
5693 a[i++] = SvIV(*MARK);
3280af22 5694 else if (*MARK == &PL_sv_undef)
748a9306 5695 a[i++] = 0;
301e8125 5696 else
8b6b16e7 5697 a[i++] = (unsigned long)SvPV_force_nolen(*MARK);
a0d0e21e
LW		 5698 if (i > 15)
5699 break;
5700 }
5701 switch (items) {
5702 default:
cea2e8a9 5703 DIE(aTHX_ "Too many args to syscall");
a0d0e21e 5704 case 0:
cea2e8a9 5705 DIE(aTHX_ "Too few args to syscall");
a0d0e21e
LW		 5706 case 1:
5707 retval = syscall(a[0]);
5708 break;
5709 case 2:
5710 retval = syscall(a[0],a[1]);
5711 break;
5712 case 3:
5713 retval = syscall(a[0],a[1],a[2]);
5714 break;
5715 case 4:
5716 retval = syscall(a[0],a[1],a[2],a[3]);
5717 break;
5718 case 5:
5719 retval = syscall(a[0],a[1],a[2],a[3],a[4]);
5720 break;
5721 case 6:
5722 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5]);
5723 break;
5724 case 7:
5725 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6]);
5726 break;
5727 case 8:
5728 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7]);
5729 break;
a0d0e21e
LW		 5730 }
5731 SP = ORIGMARK;
5732 PUSHi(retval);
5733 RETURN;
5734#else
cea2e8a9 5735 DIE(aTHX_ PL_no_func, "syscall");
a0d0e21e
LW		 5736#endif
5737}
5738
ff68c719 5739#ifdef FCNTL_EMULATE_FLOCK
301e8125 5740
ff68c719 5741/* XXX Emulate flock() with fcntl().
5742 What's really needed is a good file locking module.
5743*/
5744
cea2e8a9
GS		 5745static int
5746fcntl_emulate_flock(int fd, int operation)
ff68c719 5747{
fd9e8b45 5748 int res;
ff68c719 5749 struct flock flock;
301e8125 5750
ff68c719 5751 switch (operation & ~LOCK_NB) {
5752 case LOCK_SH:
5753 flock.l_type = F_RDLCK;
5754 break;
5755 case LOCK_EX:
5756 flock.l_type = F_WRLCK;
5757 break;
5758 case LOCK_UN:
5759 flock.l_type = F_UNLCK;
5760 break;
5761 default:
5762 errno = EINVAL;
5763 return -1;
5764 }
5765 flock.l_whence = SEEK_SET;
d9b3e12d 5766 flock.l_start = flock.l_len = (Off_t)0;
301e8125 5767
fd9e8b45
JD		 5768 res = fcntl(fd, (operation & LOCK_NB) ? F_SETLK : F_SETLKW, &flock);
5769 if (res == -1 && ((errno == EAGAIN) || (errno == EACCES)))
5770 errno = EWOULDBLOCK;
5771 return res;
ff68c719 5772}
5773
5774#endif /* FCNTL_EMULATE_FLOCK */
5775
5776#ifdef LOCKF_EMULATE_FLOCK
16d20bd9
AD		 5777
5778/* XXX Emulate flock() with lockf(). This is just to increase
5779 portability of scripts. The calls are not completely
5780 interchangeable. What's really needed is a good file
5781 locking module.
5782*/
5783
76c32331 5784/* The lockf() constants might have been defined in <unistd.h>.
5785 Unfortunately, <unistd.h> causes troubles on some mixed
5786 (BSD/POSIX) systems, such as SunOS 4.1.3.
16d20bd9
AD		 5787
5788 Further, the lockf() constants aren't POSIX, so they might not be
5789 visible if we're compiling with _POSIX_SOURCE defined. Thus, we'll
5790 just stick in the SVID values and be done with it. Sigh.
5791*/
5792
5793# ifndef F_ULOCK
5794# define F_ULOCK 0 /* Unlock a previously locked region */
5795# endif
5796# ifndef F_LOCK
5797# define F_LOCK 1 /* Lock a region for exclusive use */
5798# endif
5799# ifndef F_TLOCK
5800# define F_TLOCK 2 /* Test and lock a region for exclusive use */
5801# endif
5802# ifndef F_TEST
5803# define F_TEST 3 /* Test a region for other processes locks */
5804# endif
5805
cea2e8a9
GS		 5806static int
5807lockf_emulate_flock(int fd, int operation)
16d20bd9
AD		 5808{
5809 int i;
84902520 5810 Off_t pos;
4ee39169 5811 dSAVE_ERRNO;
84902520
TB		 5812
5813 /* flock locks entire file so for lockf we need to do the same */
6ad3d225 5814 pos = PerlLIO_lseek(fd, (Off_t)0, SEEK_CUR); /* get pos to restore later */
84902520 5815 if (pos > 0) /* is seekable and needs to be repositioned */
6ad3d225 5816 if (PerlLIO_lseek(fd, (Off_t)0, SEEK_SET) < 0)
08b714dd 5817 pos = -1; /* seek failed, so don't seek back afterwards */
4ee39169 5818 RESTORE_ERRNO;
84902520 5819
16d20bd9
AD		 5820 switch (operation) {
5821
5822 /* LOCK_SH - get a shared lock */
5823 case LOCK_SH:
5824 /* LOCK_EX - get an exclusive lock */
5825 case LOCK_EX:
5826 i = lockf (fd, F_LOCK, 0);
5827 break;
5828
5829 /* LOCK_SH|LOCK_NB - get a non-blocking shared lock */
5830 case LOCK_SH|LOCK_NB:
5831 /* LOCK_EX|LOCK_NB - get a non-blocking exclusive lock */
5832 case LOCK_EX|LOCK_NB:
5833 i = lockf (fd, F_TLOCK, 0);
5834 if (i == -1)
5835 if ((errno == EAGAIN) || (errno == EACCES))
5836 errno = EWOULDBLOCK;
5837 break;
5838
ff68c719 5839 /* LOCK_UN - unlock (non-blocking is a no-op) */
16d20bd9 5840 case LOCK_UN:
ff68c719 5841 case LOCK_UN|LOCK_NB:
16d20bd9
AD		 5842 i = lockf (fd, F_ULOCK, 0);
5843 break;
5844
5845 /* Default - can't decipher operation */
5846 default:
5847 i = -1;
5848 errno = EINVAL;
5849 break;
5850 }
84902520
TB		 5851
5852 if (pos > 0) /* need to restore position of the handle */
6ad3d225 5853 PerlLIO_lseek(fd, pos, SEEK_SET); /* ignore error here */
84902520 5854
16d20bd9
AD		 5855 return (i);
5856}
ff68c719 5857
5858#endif /* LOCKF_EMULATE_FLOCK */
241d1a3b
NC		 5859
5860/*
14d04a33 5861 * ex: set ts=8 sts=4 sw=4 et:
37442d52 5862 */
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