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widen size-type variables in pack/unpack
[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>
8d698507 79# elif !defined(VMS)
20ce7b12
GS		 80 struct passwd *getpwnam (char *);
81 struct passwd *getpwuid (Uid_t);
a0d0e21e 82# endif
28e8609d 83# ifdef HAS_GETPWENT
8d698507 84# ifndef getpwent
20ce7b12 85 struct passwd *getpwent (void);
8d698507 86# elif defined (VMS) && defined (my_getpwent)
9fa802f3 87 struct passwd *Perl_my_getpwent (pTHX);
8d698507 88# endif
28e8609d 89# endif
a0d0e21e
LW		 90#endif
91
92#ifdef HAS_GROUP
93# ifdef I_GRP
94# include <grp.h>
95# else
20ce7b12
GS		 96 struct group *getgrnam (char *);
97 struct group *getgrgid (Gid_t);
a0d0e21e 98# endif
28e8609d 99# ifdef HAS_GETGRENT
8d698507 100# ifndef getgrent
20ce7b12 101 struct group *getgrent (void);
8d698507 102# endif
28e8609d 103# endif
a0d0e21e
LW		 104#endif
105
106#ifdef I_UTIME
3730b96e 107# if defined(_MSC_VER) || defined(__MINGW32__)
3fe9a6f1 108# include <sys/utime.h>
109# else
110# include <utime.h>
111# endif
a0d0e21e 112#endif
a0d0e21e 113
cbdc8872 114#ifdef HAS_CHSIZE
cd52b7b2 115# ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
116# undef my_chsize
117# endif
72cc7e2a 118# define my_chsize PerlLIO_chsize
8d698507
AC		 119#elif defined(HAS_TRUNCATE)
120# define my_chsize PerlLIO_chsize
27da23d5 121#else
27da23d5 122I32 my_chsize(int fd, Off_t length);
cbdc8872 123#endif
124
ff68c719 125#ifdef HAS_FLOCK
126# define FLOCK flock
127#else /* no flock() */
128
36477c24 129 /* fcntl.h might not have been included, even if it exists, because
130 the current Configure only sets I_FCNTL if it's needed to pick up
131 the *_OK constants. Make sure it has been included before testing
132 the fcntl() locking constants. */
133# if defined(HAS_FCNTL) && !defined(I_FCNTL)
134# include <fcntl.h>
135# endif
136
9d9004a9 137# if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
ff68c719 138# define FLOCK fcntl_emulate_flock
139# define FCNTL_EMULATE_FLOCK
8d698507
AC		 140# elif defined(HAS_LOCKF)
141# define FLOCK lockf_emulate_flock
142# define LOCKF_EMULATE_FLOCK
143# endif
ff68c719 144
145# ifdef FLOCK
20ce7b12 146 static int FLOCK (int, int);
ff68c719 147
148 /*
149 * These are the flock() constants. Since this sytems doesn't have
150 * flock(), the values of the constants are probably not available.
151 */
152# ifndef LOCK_SH
153# define LOCK_SH 1
154# endif
155# ifndef LOCK_EX
156# define LOCK_EX 2
157# endif
158# ifndef LOCK_NB
159# define LOCK_NB 4
160# endif
161# ifndef LOCK_UN
162# define LOCK_UN 8
163# endif
164# endif /* emulating flock() */
165
166#endif /* no flock() */
55497cff 167
85ab1d1d 168#define ZBTLEN 10
27da23d5 169static const char zero_but_true[ZBTLEN + 1] = "0 but true";
85ab1d1d 170
5ff3f7a4
GS		 171#if defined(I_SYS_ACCESS) && !defined(R_OK)
172# include <sys/access.h>
173#endif
174
a4af207c
JH		 175#include "reentr.h"
176
9cffb111
OS		 177#ifdef __Lynx__
178/* Missing protos on LynxOS */
179void sethostent(int);
180void endhostent(void);
181void setnetent(int);
182void endnetent(void);
183void setprotoent(int);
184void endprotoent(void);
185void setservent(int);
186void endservent(void);
187#endif
188
40262ff4
AB		 189#ifdef __amigaos4__
190# include "amigaos4/amigaio.h"
191#endif
192
faee0e31 193#undef PERL_EFF_ACCESS /* EFFective uid/gid ACCESS */
5ff3f7a4
GS		 194
195/* F_OK unused: if stat() cannot find it... */
196
d7558cad 197#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
c955f117 198 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
d7558cad 199# define PERL_EFF_ACCESS(p,f) (access((p), (f) | EFF_ONLY_OK))
5ff3f7a4
GS		 200#endif
201
d7558cad 202#if !defined(PERL_EFF_ACCESS) && defined(HAS_EACCESS)
3813c136 203# ifdef I_SYS_SECURITY
5ff3f7a4
GS		 204# include <sys/security.h>
205# endif
c955f117
JH		 206# ifdef ACC_SELF
207 /* HP SecureWare */
d7558cad 208# define PERL_EFF_ACCESS(p,f) (eaccess((p), (f), ACC_SELF))
c955f117
JH		 209# else
210 /* SCO */
d7558cad 211# define PERL_EFF_ACCESS(p,f) (eaccess((p), (f)))
c955f117 212# endif
5ff3f7a4
GS		 213#endif
214
d7558cad 215#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESSX) && defined(ACC_SELF)
c955f117 216 /* AIX */
d7558cad 217# define PERL_EFF_ACCESS(p,f) (accessx((p), (f), ACC_SELF))
5ff3f7a4
GS		 218#endif
219
d7558cad
NC		 220
221#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) \
327c3667
GS		 222 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
223 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
5ff3f7a4 224/* The Hard Way. */
327c3667 225STATIC int
7f4774ae 226S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
ba106d47 227{
c4420975
AL		 228 const Uid_t ruid = getuid();
229 const Uid_t euid = geteuid();
230 const Gid_t rgid = getgid();
231 const Gid_t egid = getegid();
5ff3f7a4
GS		 232 int res;
233
5ff3f7a4 234#if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
cea2e8a9 235 Perl_croak(aTHX_ "switching effective uid is not implemented");
5ff3f7a4 236#else
8d698507 237# ifdef HAS_SETREUID
5ff3f7a4 238 if (setreuid(euid, ruid))
8d698507 239# elif defined(HAS_SETRESUID)
5ff3f7a4 240 if (setresuid(euid, ruid, (Uid_t)-1))
8d698507 241# endif
dcbac5bb 242 /* diag_listed_as: entering effective %s failed */
cea2e8a9 243 Perl_croak(aTHX_ "entering effective uid failed");
5ff3f7a4
GS		 244#endif
245
246#if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
cea2e8a9 247 Perl_croak(aTHX_ "switching effective gid is not implemented");
5ff3f7a4 248#else
8d698507 249# ifdef HAS_SETREGID
5ff3f7a4 250 if (setregid(egid, rgid))
8d698507 251# elif defined(HAS_SETRESGID)
5ff3f7a4 252 if (setresgid(egid, rgid, (Gid_t)-1))
8d698507 253# endif
dcbac5bb 254 /* diag_listed_as: entering effective %s failed */
cea2e8a9 255 Perl_croak(aTHX_ "entering effective gid failed");
5ff3f7a4
GS		 256#endif
257
258 res = access(path, mode);
259
260#ifdef HAS_SETREUID
261 if (setreuid(ruid, euid))
8d698507 262#elif defined(HAS_SETRESUID)
5ff3f7a4
GS		 263 if (setresuid(ruid, euid, (Uid_t)-1))
264#endif
dcbac5bb 265 /* diag_listed_as: leaving effective %s failed */
cea2e8a9 266 Perl_croak(aTHX_ "leaving effective uid failed");
5ff3f7a4
GS		 267
268#ifdef HAS_SETREGID
269 if (setregid(rgid, egid))
8d698507 270#elif defined(HAS_SETRESGID)
5ff3f7a4
GS		 271 if (setresgid(rgid, egid, (Gid_t)-1))
272#endif
dcbac5bb 273 /* diag_listed_as: leaving effective %s failed */
cea2e8a9 274 Perl_croak(aTHX_ "leaving effective gid failed");
5ff3f7a4
GS		 275
276 return res;
277}
d6864606 278# define PERL_EFF_ACCESS(p,f) (S_emulate_eaccess(aTHX_ (p), (f)))
5ff3f7a4
GS		 279#endif
280
a0d0e21e
LW		 281PP(pp_backtick)
282{
20b7effb 283 dSP; dTARGET;
760ac839 284 PerlIO *fp;
1b6737cc 285 const char * const tmps = POPpconstx;
1c23e2bd 286 const U8 gimme = GIMME_V;
e1ec3a88 287 const char *mode = "r";
54310121 288
a0d0e21e 289 TAINT_PROPER("``");
16fe6d59
GS		 290 if (PL_op->op_private & OPpOPEN_IN_RAW)
291 mode = "rb";
292 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
293 mode = "rt";
2fbb330f 294 fp = PerlProc_popen(tmps, mode);
a0d0e21e 295 if (fp) {
11bcd5da 296 const char * const type = Perl_PerlIO_context_layers(aTHX_ NULL);
ac27b0f5
NIS		 297 if (type && *type)
298 PerlIO_apply_layers(aTHX_ fp,mode,type);
299
54310121 300 if (gimme == G_VOID) {
96827780
MB		 301 char tmpbuf[256];
302 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
a79db61d 303 NOOP;
54310121 304 }
305 else if (gimme == G_SCALAR) {
d343c3ef 306 ENTER_with_name("backtick");
75af1a9c 307 SAVESPTR(PL_rs);
fa326138 308 PL_rs = &PL_sv_undef;
60e13354 309 SvPVCLEAR(TARG); /* note that this preserves previous buffer */
bd61b366 310 while (sv_gets(TARG, fp, SvCUR(TARG)) != NULL)
a79db61d 311 NOOP;
d343c3ef 312 LEAVE_with_name("backtick");
a0d0e21e 313 XPUSHs(TARG);
aa689395 314 SvTAINTED_on(TARG);
a0d0e21e
LW		 315 }
316 else {
a0d0e21e 317 for (;;) {
561b68a9 318 SV * const sv = newSV(79);
bd61b366 319 if (sv_gets(sv, fp, 0) == NULL) {
a0d0e21e
LW		 320 SvREFCNT_dec(sv);
321 break;
322 }
6e449a3a 323 mXPUSHs(sv);
a0d0e21e 324 if (SvLEN(sv) - SvCUR(sv) > 20) {
1da4ca5f 325 SvPV_shrink_to_cur(sv);
a0d0e21e 326 }
aa689395 327 SvTAINTED_on(sv);
a0d0e21e
LW		 328 }
329 }
2fbb330f 330 STATUS_NATIVE_CHILD_SET(PerlProc_pclose(fp));
aa689395 331 TAINT; /* "I believe that this is not gratuitous!" */
a0d0e21e
LW		 332 }
333 else {
37038d91 334 STATUS_NATIVE_CHILD_SET(-1);
54310121 335 if (gimme == G_SCALAR)
a0d0e21e
LW		 336 RETPUSHUNDEF;
337 }
338
339 RETURN;
340}
341
342PP(pp_glob)
343{
344 OP *result;
9426e1a5 345 dSP;
9423a867
FC		 346 GV * const gv = (PL_op->op_flags & OPf_SPECIAL) ? NULL : (GV *)POPs;
347
348 PUTBACK;
349
151cea25
FC		 350 /* make a copy of the pattern if it is gmagical, to ensure that magic
351 * is called once and only once */
9423a867 352 if (SvGMAGICAL(TOPs)) TOPs = sv_2mortal(newSVsv(TOPs));
9426e1a5 353
fc99edcf 354 tryAMAGICunTARGETlist(iter_amg, (PL_op->op_flags & OPf_SPECIAL));
d1bea3d8
DM		 355
356 if (PL_op->op_flags & OPf_SPECIAL) {
357 /* call Perl-level glob function instead. Stack args are:
9423a867 358 * MARK, wildcard
d1bea3d8
DM		 359 * and following OPs should be: gv(CORE::GLOBAL::glob), entersub
360 * */
361 return NORMAL;
362 }
d67594ff 363 if (PL_globhook) {
d67594ff
FC		 364 PL_globhook(aTHX);
365 return NORMAL;
366 }
f5284f61 367
71686f12
GS		 368 /* Note that we only ever get here if File::Glob fails to load
369 * without at the same time croaking, for some reason, or if
370 * perl was built with PERL_EXTERNAL_GLOB */
371
d343c3ef 372 ENTER_with_name("glob");
a0d0e21e 373
c90c0ff4 374#ifndef VMS
284167a5 375 if (TAINTING_get) {
7bac28a0 376 /*
377 * The external globbing program may use things we can't control,
378 * so for security reasons we must assume the worst.
379 */
380 TAINT;
22c35a8c 381 taint_proper(PL_no_security, "glob");
7bac28a0 382 }
c90c0ff4 383#endif /* !VMS */
7bac28a0 384
3280af22 385 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
9423a867 386 PL_last_in_gv = gv;
a0d0e21e 387
3280af22 388 SAVESPTR(PL_rs); /* This is not permanent, either. */
84bafc02 389 PL_rs = newSVpvs_flags("\000", SVs_TEMP);
c07a80fd 390#ifndef DOSISH
391#ifndef CSH
6b88bc9c 392 *SvPVX(PL_rs) = '\n';
a0d0e21e 393#endif /* !CSH */
55497cff 394#endif /* !DOSISH */
c07a80fd 395
a0d0e21e 396 result = do_readline();
d343c3ef 397 LEAVE_with_name("glob");
a0d0e21e
LW		 398 return result;
399}
400
a0d0e21e
LW		 401PP(pp_rcatline)
402{
146174a9 403 PL_last_in_gv = cGVOP_gv;
a0d0e21e
LW		 404 return do_readline();
405}
406
407PP(pp_warn)
408{
20b7effb 409 dSP; dMARK;
c5df3096 410 SV *exsv;
06bf62c7 411 STRLEN len;
b59aed67 412 if (SP - MARK > 1) {
a0d0e21e 413 dTARGET;
3280af22 414 do_join(TARG, &PL_sv_no, MARK, SP);
c5df3096 415 exsv = TARG;
a0d0e21e
LW		 416 SP = MARK + 1;
417 }
b59aed67 418 else if (SP == MARK) {
c5df3096 419 exsv = &PL_sv_no;
b59aed67 420 EXTEND(SP, 1);
83f957ec 421 SP = MARK + 1;
b59aed67 422 }
a0d0e21e 423 else {
c5df3096 424 exsv = TOPs;
ef5fe392 425 if (SvGMAGICAL(exsv)) exsv = sv_mortalcopy(exsv);
a0d0e21e 426 }
06bf62c7 427
72d74926 428 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
c5df3096
Z		 429 /* well-formed exception supplied */
430 }
c5df3096 431 else {
eed484f9
DD		 432 SV * const errsv = ERRSV;
433 SvGETMAGIC(errsv);
434 if (SvROK(errsv)) {
435 if (SvGMAGICAL(errsv)) {
ef5fe392 436 exsv = sv_newmortal();
eed484f9 437 sv_setsv_nomg(exsv, errsv);
ef5fe392 438 }
eed484f9 439 else exsv = errsv;
ef5fe392 440 }
eed484f9 441 else if (SvPOKp(errsv) ? SvCUR(errsv) : SvNIOKp(errsv)) {
ef5fe392 442 exsv = sv_newmortal();
eed484f9 443 sv_setsv_nomg(exsv, errsv);
ef5fe392
FC		 444 sv_catpvs(exsv, "\t...caught");
445 }
446 else {
c5df3096 447 exsv = newSVpvs_flags("Warning: something's wrong", SVs_TEMP);
ef5fe392 448 }
c5df3096 449 }
3b7f69a5 450 if (SvROK(exsv) && !PL_warnhook)
147e3846 451 Perl_warn(aTHX_ "%" SVf, SVfARG(exsv));
3b7f69a5 452 else warn_sv(exsv);
a0d0e21e
LW		 453 RETSETYES;
454}
455
456PP(pp_die)
457{
20b7effb 458 dSP; dMARK;
c5df3096 459 SV *exsv;
06bf62c7 460 STRLEN len;
96e176bf 461#ifdef VMS
97124ef6
FC		 462 VMSISH_HUSHED =
463 VMSISH_HUSHED || (PL_curcop->op_private & OPpHUSH_VMSISH);
96e176bf 464#endif
a0d0e21e
LW		 465 if (SP - MARK != 1) {
466 dTARGET;
3280af22 467 do_join(TARG, &PL_sv_no, MARK, SP);
c5df3096 468 exsv = TARG;
a0d0e21e
LW		 469 SP = MARK + 1;
470 }
471 else {
c5df3096 472 exsv = TOPs;
a0d0e21e 473 }
c5df3096 474
72d74926 475 if (SvROK(exsv) || (SvPV_const(exsv, len), len)) {
c5df3096
Z		 476 /* well-formed exception supplied */
477 }
eed484f9
DD		 478 else {
479 SV * const errsv = ERRSV;
8b3945e7 480 SvGETMAGIC(errsv);
eed484f9
DD		 481 if (SvROK(errsv)) {
482 exsv = errsv;
483 if (sv_isobject(exsv)) {
484 HV * const stash = SvSTASH(SvRV(exsv));
485 GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
486 if (gv) {
487 SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
488 SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
489 EXTEND(SP, 3);
490 PUSHMARK(SP);
491 PUSHs(exsv);
492 PUSHs(file);
493 PUSHs(line);
494 PUTBACK;
495 call_sv(MUTABLE_SV(GvCV(gv)),
496 G_SCALAR|G_EVAL|G_KEEPERR);
497 exsv = sv_mortalcopy(*PL_stack_sp--);
498 }
05423cc9 499 }
4e6ea2c3 500 }
8b3945e7 501 else if (SvPOK(errsv) && SvCUR(errsv)) {
eed484f9
DD		 502 exsv = sv_mortalcopy(errsv);
503 sv_catpvs(exsv, "\t...propagated");
504 }
505 else {
506 exsv = newSVpvs_flags("Died", SVs_TEMP);
507 }
c5df3096 508 }
81d52ecd 509 die_sv(exsv);
a25b5927 510 NOT_REACHED; /* NOTREACHED */
263fdd5b 511 return NULL; /* avoid missing return from non-void function warning */
a0d0e21e
LW		 512}
513
514/* I/O. */
515
d682515d 516OP *
3e0cb5de 517Perl_tied_method(pTHX_ SV *methname, SV **sp, SV *const sv,
d682515d 518 const MAGIC *const mg, const U32 flags, U32 argc, ...)
6bcca55b 519{
d8ef3a16
DM		 520 SV **orig_sp = sp;
521 I32 ret_args;
052a7c76 522 SSize_t extend_size;
d8ef3a16 523
d682515d 524 PERL_ARGS_ASSERT_TIED_METHOD;
6bcca55b
NC		 525
526 /* Ensure that our flag bits do not overlap. */
6d59e610
LM		 527 STATIC_ASSERT_STMT((TIED_METHOD_MORTALIZE_NOT_NEEDED & G_WANT) == 0);
528 STATIC_ASSERT_STMT((TIED_METHOD_ARGUMENTS_ON_STACK & G_WANT) == 0);
529 STATIC_ASSERT_STMT((TIED_METHOD_SAY & G_WANT) == 0);
6bcca55b 530
d8ef3a16
DM		 531 PUTBACK; /* sp is at *foot* of args, so this pops args from old stack */
532 PUSHSTACKi(PERLSI_MAGIC);
052a7c76 533 /* extend for object + args. If argc might wrap/truncate when cast
e9548aa6
DM		 534 * to SSize_t and incremented, set to -1, which will trigger a panic in
535 * EXTEND().
536 * The weird way this is written is because g++ is dumb enough to
537 * warn "comparison is always false" on something like:
538 *
539 * sizeof(a) >= sizeof(b) && a >= B_t_MAX -1
540 *
541 * (where the LH condition is false)
542 */
052a7c76 543 extend_size =
e9548aa6 544 (argc > (sizeof(argc) >= sizeof(SSize_t) ? SSize_t_MAX - 1 : argc))
052a7c76
DM		 545 ? -1 : (SSize_t)argc + 1;
546 EXTEND(SP, extend_size);
6bcca55b 547 PUSHMARK(sp);
d682515d 548 PUSHs(SvTIED_obj(sv, mg));
d8ef3a16
DM		 549 if (flags & TIED_METHOD_ARGUMENTS_ON_STACK) {
550 Copy(orig_sp + 2, sp + 1, argc, SV*); /* copy args to new stack */
1a8c1d59 551 sp += argc;
d8ef3a16 552 }
1a8c1d59 553 else if (argc) {
d682515d
NC		 554 const U32 mortalize_not_needed
555 = flags & TIED_METHOD_MORTALIZE_NOT_NEEDED;
6bcca55b 556 va_list args;
0d5509eb 557 va_start(args, argc);
6bcca55b
NC		 558 do {
559 SV *const arg = va_arg(args, SV *);
560 if(mortalize_not_needed)
561 PUSHs(arg);
562 else
563 mPUSHs(arg);
564 } while (--argc);
565 va_end(args);
566 }
567
568 PUTBACK;
d682515d 569 ENTER_with_name("call_tied_method");
94bc412f
NC		 570 if (flags & TIED_METHOD_SAY) {
571 /* local $\ = "\n" */
572 SAVEGENERICSV(PL_ors_sv);
573 PL_ors_sv = newSVpvs("\n");
574 }
3e0cb5de 575 ret_args = call_sv(methname, (flags & G_WANT)|G_METHOD_NAMED);
d8ef3a16
DM		 576 SPAGAIN;
577 orig_sp = sp;
578 POPSTACK;
579 SPAGAIN;
580 if (ret_args) { /* copy results back to original stack */
581 EXTEND(sp, ret_args);
582 Copy(orig_sp - ret_args + 1, sp + 1, ret_args, SV*);
583 sp += ret_args;
584 PUTBACK;
585 }
d682515d 586 LEAVE_with_name("call_tied_method");
6bcca55b
NC		 587 return NORMAL;
588}
589
d682515d
NC		 590#define tied_method0(a,b,c,d) \
591 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,0)
592#define tied_method1(a,b,c,d,e) \
593 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,1,e)
594#define tied_method2(a,b,c,d,e,f) \
595 Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,2,e,f)
6bcca55b 596
a0d0e21e
LW		 597PP(pp_open)
598{
20b7effb 599 dSP;
a567e93b
NIS		 600 dMARK; dORIGMARK;
601 dTARGET;
a0d0e21e 602 SV *sv;
5b468f54 603 IO *io;
5c144d81 604 const char *tmps;
a0d0e21e 605 STRLEN len;
a567e93b 606 bool ok;
a0d0e21e 607
159b6efe 608 GV * const gv = MUTABLE_GV(*++MARK);
c4420975 609
13be902c 610 if (!isGV(gv) && !(SvTYPE(gv) == SVt_PVLV && isGV_with_GP(gv)))
cea2e8a9 611 DIE(aTHX_ PL_no_usym, "filehandle");
abc718f2 612
a79db61d 613 if ((io = GvIOp(gv))) {
a5e1d062 614 const MAGIC *mg;
36477c24 615 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
853846ea 616
a2a5de95 617 if (IoDIRP(io))
489c16bf 618 Perl_croak(aTHX_ "Cannot open %" HEKf " as a filehandle: it is already open as a dirhandle",
d0c0e7dd 619 HEKfARG(GvENAME_HEK(gv)));
abc718f2 620
ad64d0ec 621 mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
c4420975
AL		 622 if (mg) {
623 /* Method's args are same as ours ... */
624 /* ... except handle is replaced by the object */
3e0cb5de 625 return Perl_tied_method(aTHX_ SV_CONST(OPEN), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC		 626 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
627 sp - mark);
c4420975 628 }
4592e6ca
NIS		 629 }
630
a567e93b
NIS		 631 if (MARK < SP) {
632 sv = *++MARK;
633 }
634 else {
35a08ec7 635 sv = GvSVn(gv);
a567e93b
NIS		 636 }
637
5c144d81 638 tmps = SvPV_const(sv, len);
d5eb9a46 639 ok = do_open6(gv, tmps, len, NULL, MARK+1, (SP-MARK));
a567e93b
NIS		 640 SP = ORIGMARK;
641 if (ok)
3280af22
NIS		 642 PUSHi( (I32)PL_forkprocess );
643 else if (PL_forkprocess == 0) /* we are a new child */
725c44f9 644 PUSHs(&PL_sv_zero);
a0d0e21e
LW		 645 else
646 RETPUSHUNDEF;
647 RETURN;
648}
649
650PP(pp_close)
651{
20b7effb 652 dSP;
12dc5f94
DM		 653 /* pp_coreargs pushes a NULL to indicate no args passed to
654 * CORE::close() */
30901a8a
FC		 655 GV * const gv =
656 MAXARG == 0 || (!TOPs && !POPs) ? PL_defoutgv : MUTABLE_GV(POPs);
1d603a67 657
2addaaf3
NC		 658 if (MAXARG == 0)
659 EXTEND(SP, 1);
660
a79db61d
AL		 661 if (gv) {
662 IO * const io = GvIO(gv);
663 if (io) {
a5e1d062 664 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 665 if (mg) {
3e0cb5de 666 return tied_method0(SV_CONST(CLOSE), SP, MUTABLE_SV(io), mg);
a79db61d
AL		 667 }
668 }
1d603a67 669 }
54310121 670 PUSHs(boolSV(do_close(gv, TRUE)));
a0d0e21e
LW		 671 RETURN;
672}
673
674PP(pp_pipe_op)
675{
a0d0e21e 676#ifdef HAS_PIPE
9cad6237 677 dSP;
eb578fdb
KW		 678 IO *rstio;
679 IO *wstio;
a0d0e21e
LW		 680 int fd[2];
681
159b6efe
NC		 682 GV * const wgv = MUTABLE_GV(POPs);
683 GV * const rgv = MUTABLE_GV(POPs);
a0d0e21e 684
a0d0e21e 685 rstio = GvIOn(rgv);
a0d0e21e
LW		 686 if (IoIFP(rstio))
687 do_close(rgv, FALSE);
49225470
DD		 688
689 wstio = GvIOn(wgv);
a0d0e21e
LW		 690 if (IoIFP(wstio))
691 do_close(wgv, FALSE);
692
6ad3d225 693 if (PerlProc_pipe(fd) < 0)
a0d0e21e
LW		 694 goto badexit;
695
147e3846
KW		 696 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r" PIPE_OPEN_MODE);
697 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w" PIPE_OPEN_MODE);
b5ac89c3 698 IoOFP(rstio) = IoIFP(rstio);
a0d0e21e 699 IoIFP(wstio) = IoOFP(wstio);
50952442
JH		 700 IoTYPE(rstio) = IoTYPE_RDONLY;
701 IoTYPE(wstio) = IoTYPE_WRONLY;
a0d0e21e
LW		 702
703 if (!IoIFP(rstio) || !IoOFP(wstio)) {
a79db61d
AL		 704 if (IoIFP(rstio))
705 PerlIO_close(IoIFP(rstio));
706 else
707 PerlLIO_close(fd[0]);
708 if (IoOFP(wstio))
709 PerlIO_close(IoOFP(wstio));
710 else
711 PerlLIO_close(fd[1]);
a0d0e21e
LW		 712 goto badexit;
713 }
131d45a9 714#if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
375ed12a 715 /* ensure close-on-exec */
131d45a9
JH		 716 if ((fd[0] > PL_maxsysfd && fcntl(fd[0], F_SETFD, FD_CLOEXEC) < 0) ||
717 (fd[1] > PL_maxsysfd && fcntl(fd[1], F_SETFD, FD_CLOEXEC) < 0))
375ed12a 718 goto badexit;
4771b018 719#endif
a0d0e21e
LW		 720 RETPUSHYES;
721
7b52d656 722 badexit:
a0d0e21e
LW		 723 RETPUSHUNDEF;
724#else
cea2e8a9 725 DIE(aTHX_ PL_no_func, "pipe");
a0d0e21e
LW		 726#endif
727}
728
729PP(pp_fileno)
730{
20b7effb 731 dSP; dTARGET;
a0d0e21e
LW		 732 GV *gv;
733 IO *io;
760ac839 734 PerlIO *fp;
a5e1d062 735 const MAGIC *mg;
4592e6ca 736
a0d0e21e
LW		 737 if (MAXARG < 1)
738 RETPUSHUNDEF;
159b6efe 739 gv = MUTABLE_GV(POPs);
9c9f25b8 740 io = GvIO(gv);
4592e6ca 741
9c9f25b8 742 if (io
ad64d0ec 743 && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar)))
5b468f54 744 {
3e0cb5de 745 return tied_method0(SV_CONST(FILENO), SP, MUTABLE_SV(io), mg);
4592e6ca
NIS		 746 }
747
67f2cc75
AC		 748 if (io && IoDIRP(io)) {
749#if defined(HAS_DIRFD) || defined(HAS_DIR_DD_FD)
750 PUSHi(my_dirfd(IoDIRP(io)));
751 RETURN;
752#elif defined(ENOTSUP)
753 errno = ENOTSUP; /* Operation not supported */
754 RETPUSHUNDEF;
755#elif defined(EOPNOTSUPP)
756 errno = EOPNOTSUPP; /* Operation not supported on socket */
757 RETPUSHUNDEF;
758#else
759 errno = EINVAL; /* Invalid argument */
760 RETPUSHUNDEF;
761#endif
762 }
763
9c9f25b8 764 if (!io || !(fp = IoIFP(io))) {
c289d2f7
JH		 765 /* Can't do this because people seem to do things like
766 defined(fileno($foo)) to check whether $foo is a valid fh.
51087808
NC		 767
768 report_evil_fh(gv);
c289d2f7 769 */
a0d0e21e 770 RETPUSHUNDEF;
c289d2f7
JH		 771 }
772
760ac839 773 PUSHi(PerlIO_fileno(fp));
a0d0e21e
LW		 774 RETURN;
775}
776
777PP(pp_umask)
778{
27da23d5 779 dSP;
d7e492a4 780#ifdef HAS_UMASK
27da23d5 781 dTARGET;
761237fe 782 Mode_t anum;
a0d0e21e 783
58536d15 784 if (MAXARG < 1 || (!TOPs && !POPs)) {
b0b546b3
GA		 785 anum = PerlLIO_umask(022);
786 /* setting it to 022 between the two calls to umask avoids
787 * to have a window where the umask is set to 0 -- meaning
788 * that another thread could create world-writeable files. */
789 if (anum != 022)
790 (void)PerlLIO_umask(anum);
a0d0e21e
LW		 791 }
792 else
6ad3d225 793 anum = PerlLIO_umask(POPi);
a0d0e21e
LW		 794 TAINT_PROPER("umask");
795 XPUSHi(anum);
796#else
a0288114 797 /* Only DIE if trying to restrict permissions on "user" (self).
eec2d3df
GS		 798 * Otherwise it's harmless and more useful to just return undef
799 * since 'group' and 'other' concepts probably don't exist here. */
58536d15 800 if (MAXARG >= 1 && (TOPs||POPs) && (POPi & 0700))
cea2e8a9 801 DIE(aTHX_ "umask not implemented");
6b88bc9c 802 XPUSHs(&PL_sv_undef);
a0d0e21e
LW		 803#endif
804 RETURN;
805}
806
807PP(pp_binmode)
808{
20b7effb 809 dSP;
a0d0e21e
LW		 810 GV *gv;
811 IO *io;
760ac839 812 PerlIO *fp;
a0714e2c 813 SV *discp = NULL;
a0d0e21e
LW		 814
815 if (MAXARG < 1)
816 RETPUSHUNDEF;
60382766 817 if (MAXARG > 1) {
16fe6d59 818 discp = POPs;
60382766 819 }
a0d0e21e 820
159b6efe 821 gv = MUTABLE_GV(POPs);
9c9f25b8 822 io = GvIO(gv);
4592e6ca 823
9c9f25b8 824 if (io) {
a5e1d062 825 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 826 if (mg) {
bc0c81ca
NC		 827 /* This takes advantage of the implementation of the varargs
828 function, which I don't think that the optimiser will be able to
829 figure out. Although, as it's a static function, in theory it
830 could. */
3e0cb5de 831 return Perl_tied_method(aTHX_ SV_CONST(BINMODE), SP, MUTABLE_SV(io), mg,
d682515d
NC		 832 G_SCALAR|TIED_METHOD_MORTALIZE_NOT_NEEDED,
833 discp ? 1 : 0, discp);
a79db61d 834 }
4592e6ca 835 }
a0d0e21e 836
9c9f25b8 837 if (!io || !(fp = IoIFP(io))) {
51087808 838 report_evil_fh(gv);
b5fe5ca2 839 SETERRNO(EBADF,RMS_IFI);
50f846a7
SC		 840 RETPUSHUNDEF;
841 }
a0d0e21e 842
40d98b49 843 PUTBACK;
f0a78170 844 {
a79b25b7
VP		 845 STRLEN len = 0;
846 const char *d = NULL;
847 int mode;
848 if (discp)
849 d = SvPV_const(discp, len);
850 mode = mode_from_discipline(d, len);
f0a78170
NC		 851 if (PerlIO_binmode(aTHX_ fp, IoTYPE(io), mode, d)) {
852 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
853 if (!PerlIO_binmode(aTHX_ IoOFP(io), IoTYPE(io), mode, d)) {
854 SPAGAIN;
855 RETPUSHUNDEF;
856 }
857 }
858 SPAGAIN;
859 RETPUSHYES;
860 }
861 else {
862 SPAGAIN;
863 RETPUSHUNDEF;
38af81ff 864 }
40d98b49 865 }
a0d0e21e
LW		 866}
867
868PP(pp_tie)
869{
20b7effb 870 dSP; dMARK;
a0d0e21e 871 HV* stash;
07822e36 872 GV *gv = NULL;
a0d0e21e 873 SV *sv;
1df70142 874 const I32 markoff = MARK - PL_stack_base;
e1ec3a88 875 const char *methname;
14befaf4 876 int how = PERL_MAGIC_tied;
e336de0d 877 U32 items;
c4420975 878 SV *varsv = *++MARK;
a0d0e21e 879
6b05c17a
NIS		 880 switch(SvTYPE(varsv)) {
881 case SVt_PVHV:
aec0c0cc
FC		 882 {
883 HE *entry;
6b05c17a 884 methname = "TIEHASH";
aec0c0cc
FC		 885 if (HvLAZYDEL(varsv) && (entry = HvEITER((HV *)varsv))) {
886 HvLAZYDEL_off(varsv);
887 hv_free_ent((HV *)varsv, entry);
888 }
85fbaab2 889 HvEITER_set(MUTABLE_HV(varsv), 0);
6b05c17a 890 break;
aec0c0cc 891 }
6b05c17a
NIS		 892 case SVt_PVAV:
893 methname = "TIEARRAY";
ce65bc73
FC		 894 if (!AvREAL(varsv)) {
895 if (!AvREIFY(varsv))
896 Perl_croak(aTHX_ "Cannot tie unreifiable array");
897 av_clear((AV *)varsv);
898 AvREIFY_off(varsv);
899 AvREAL_on(varsv);
900 }
6b05c17a
NIS		 901 break;
902 case SVt_PVGV:
13be902c 903 case SVt_PVLV:
8bb5f786 904 if (isGV_with_GP(varsv) && !SvFAKE(varsv)) {
6e592b3a
BM		 905 methname = "TIEHANDLE";
906 how = PERL_MAGIC_tiedscalar;
907 /* For tied filehandles, we apply tiedscalar magic to the IO
908 slot of the GP rather than the GV itself. AMS 20010812 */
909 if (!GvIOp(varsv))
910 GvIOp(varsv) = newIO();
ad64d0ec 911 varsv = MUTABLE_SV(GvIOp(varsv));
6e592b3a
BM		 912 break;
913 }
13733cde
FC		 914 if (SvTYPE(varsv) == SVt_PVLV && LvTYPE(varsv) == 'y') {
915 vivify_defelem(varsv);
916 varsv = LvTARG(varsv);
917 }
924ba076 918 /* FALLTHROUGH */
6b05c17a
NIS		 919 default:
920 methname = "TIESCALAR";
14befaf4 921 how = PERL_MAGIC_tiedscalar;
6b05c17a
NIS		 922 break;
923 }
e336de0d 924 items = SP - MARK++;
a91d1d42 925 if (sv_isobject(*MARK)) { /* Calls GET magic. */
d343c3ef 926 ENTER_with_name("call_TIE");
e788e7d3 927 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 928 PUSHMARK(SP);
eb160463 929 EXTEND(SP,(I32)items);
e336de0d
GS		 930 while (items--)
931 PUSHs(*MARK++);
932 PUTBACK;
864dbfa3 933 call_method(methname, G_SCALAR);
301e8125 934 }
6b05c17a 935 else {
086d2913
NC		 936 /* Can't use call_method here, else this: fileno FOO; tie @a, "FOO"
937 * will attempt to invoke IO::File::TIEARRAY, with (best case) the
938 * wrong error message, and worse case, supreme action at a distance.
939 * (Sorry obfuscation writers. You're not going to be given this one.)
6b05c17a 940 */
4886938f 941 stash = gv_stashsv(*MARK, 0);
0b077c88 942 if (!stash) {
32207c63
AC		 943 if (SvROK(*MARK))
944 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%" SVf "\"",
945 methname, SVfARG(*MARK));
946 else if (isGV(*MARK)) {
947 /* If the glob doesn't name an existing package, using
948 * SVfARG(*MARK) would yield "*Foo::Bar" or *main::Foo. So
949 * generate the name for the error message explicitly. */
7594f18f 950 SV *stashname = sv_2mortal(newSV(0));
32207c63
AC		 951 gv_fullname4(stashname, (GV *) *MARK, NULL, FALSE);
952 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%" SVf "\"",
953 methname, SVfARG(stashname));
954 }
955 else {
956 SV *stashname = !SvPOK(*MARK) ? &PL_sv_no
957 : SvCUR(*MARK) ? *MARK
958 : sv_2mortal(newSVpvs("main"));
959 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%" SVf "\""
960 " (perhaps you forgot to load \"%" SVf "\"?)",
961 methname, SVfARG(stashname), SVfARG(stashname));
0b077c88 962 }
0b077c88
DIM		 963 }
964 else if (!(gv = gv_fetchmethod(stash, methname))) {
965 /* The effective name can only be NULL for stashes that have
966 * been deleted from the symbol table, which this one can't
967 * be, since we just looked it up by name.
968 */
147e3846 969 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%" HEKf "\"",
0b077c88
DIM		 970 methname, HvENAME_HEK_NN(stash));
971 }
d343c3ef 972 ENTER_with_name("call_TIE");
e788e7d3 973 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 974 PUSHMARK(SP);
eb160463 975 EXTEND(SP,(I32)items);
e336de0d
GS		 976 while (items--)
977 PUSHs(*MARK++);
978 PUTBACK;
ad64d0ec 979 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
6b05c17a 980 }
a0d0e21e
LW		 981 SPAGAIN;
982
983 sv = TOPs;
d3acc0f7 984 POPSTACK;
a0d0e21e 985 if (sv_isobject(sv)) {
33c27489 986 sv_unmagic(varsv, how);
ae21d580 987 /* Croak if a self-tie on an aggregate is attempted. */
b881518d 988 if (varsv == SvRV(sv) &&
d87ebaca
YST		 989 (SvTYPE(varsv) == SVt_PVAV ||
990 SvTYPE(varsv) == SVt_PVHV))
ae21d580
JH		 991 Perl_croak(aTHX_
992 "Self-ties of arrays and hashes are not supported");
a0714e2c 993 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
a0d0e21e 994 }
d343c3ef 995 LEAVE_with_name("call_TIE");
3280af22 996 SP = PL_stack_base + markoff;
a0d0e21e
LW		 997 PUSHs(sv);
998 RETURN;
999}
1000
b1c05ba5
DM		 1001
1002/* also used for: pp_dbmclose() */
1003
a0d0e21e
LW		 1004PP(pp_untie)
1005{
20b7effb 1006 dSP;
5b468f54 1007 MAGIC *mg;
33c27489 1008 SV *sv = POPs;
1df70142 1009 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 1010 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
55497cff 1011
ca0d4ed9 1012 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
5b468f54
AMS		 1013 RETPUSHYES;
1014
13733cde
FC		 1015 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y' &&
1016 !(sv = defelem_target(sv, NULL))) RETPUSHUNDEF;
1017
65eba18f 1018 if ((mg = SvTIED_mg(sv, how))) {
1b6737cc 1019 SV * const obj = SvRV(SvTIED_obj(sv, mg));
e7e69c85 1020 if (obj && SvSTASH(obj)) {
c4420975 1021 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
0bd48802 1022 CV *cv;
c4420975 1023 if (gv && isGV(gv) && (cv = GvCV(gv))) {
fa2b88e0 1024 PUSHMARK(SP);
c33ef3ac 1025 PUSHs(SvTIED_obj(MUTABLE_SV(gv), mg));
6e449a3a 1026 mXPUSHi(SvREFCNT(obj) - 1);
fa2b88e0 1027 PUTBACK;
d343c3ef 1028 ENTER_with_name("call_UNTIE");
ad64d0ec 1029 call_sv(MUTABLE_SV(cv), G_VOID);
d343c3ef 1030 LEAVE_with_name("call_UNTIE");
fa2b88e0
JS		 1031 SPAGAIN;
1032 }
a2a5de95
NC		 1033 else if (mg && SvREFCNT(obj) > 1) {
1034 Perl_ck_warner(aTHX_ packWARN(WARN_UNTIE),
147e3846 1035 "untie attempted while %" UVuf " inner references still exist",
a2a5de95 1036 (UV)SvREFCNT(obj) - 1 ) ;
c4420975 1037 }
cbdc8872 1038 }
1039 }
38193a09 1040 sv_unmagic(sv, how) ;
55497cff 1041 RETPUSHYES;
a0d0e21e
LW		 1042}
1043
c07a80fd 1044PP(pp_tied)
1045{
39644a26 1046 dSP;
1b6737cc 1047 const MAGIC *mg;
b3cf4821 1048 dTOPss;
1df70142 1049 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 1050 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
5b468f54 1051
4be76e1f 1052 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
b3cf4821 1053 goto ret_undef;
c07a80fd 1054
13733cde 1055 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y' &&
b3cf4821 1056 !(sv = defelem_target(sv, NULL))) goto ret_undef;
13733cde 1057
155aba94 1058 if ((mg = SvTIED_mg(sv, how))) {
b3cf4821
DD		 1059 SETs(SvTIED_obj(sv, mg));
1060 return NORMAL; /* PUTBACK not needed, pp_tied never moves SP */
c07a80fd 1061 }
b3cf4821
DD		 1062 ret_undef:
1063 SETs(&PL_sv_undef);
1064 return NORMAL;
c07a80fd 1065}
1066
a0d0e21e
LW		 1067PP(pp_dbmopen)
1068{
20b7effb 1069 dSP;
a0d0e21e
LW		 1070 dPOPPOPssrl;
1071 HV* stash;
07822e36 1072 GV *gv = NULL;
a0d0e21e 1073
85fbaab2 1074 HV * const hv = MUTABLE_HV(POPs);
84bafc02 1075 SV * const sv = newSVpvs_flags("AnyDBM_File", SVs_TEMP);
da51bb9b 1076 stash = gv_stashsv(sv, 0);
8ebc5c01 1077 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
a0d0e21e 1078 PUTBACK;
864dbfa3 1079 require_pv("AnyDBM_File.pm");
a0d0e21e 1080 SPAGAIN;
eff494dd 1081 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH")))
cea2e8a9 1082 DIE(aTHX_ "No dbm on this machine");
a0d0e21e
LW		 1083 }
1084
57d3b86d 1085 ENTER;
924508f0 1086 PUSHMARK(SP);
6b05c17a 1087
924508f0 1088 EXTEND(SP, 5);
a0d0e21e
LW		 1089 PUSHs(sv);
1090 PUSHs(left);
1091 if (SvIV(right))
6e449a3a 1092 mPUSHu(O_RDWR|O_CREAT);
a0d0e21e 1093 else
480e0d3c 1094 {
6e449a3a 1095 mPUSHu(O_RDWR);
480e0d3c
FC		 1096 if (!SvOK(right)) right = &PL_sv_no;
1097 }
a0d0e21e 1098 PUSHs(right);
57d3b86d 1099 PUTBACK;
ad64d0ec 1100 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
a0d0e21e
LW		 1101 SPAGAIN;
1102
1103 if (!sv_isobject(TOPs)) {
924508f0
GS		 1104 SP--;
1105 PUSHMARK(SP);
a0d0e21e
LW		 1106 PUSHs(sv);
1107 PUSHs(left);
6e449a3a 1108 mPUSHu(O_RDONLY);
a0d0e21e 1109 PUSHs(right);
a0d0e21e 1110 PUTBACK;
ad64d0ec 1111 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
a0d0e21e 1112 SPAGAIN;
4b523e79
DD		 1113 if (sv_isobject(TOPs))
1114 goto retie;
a0d0e21e 1115 }
4b523e79
DD		 1116 else {
1117 retie:
ad64d0ec
NC		 1118 sv_unmagic(MUTABLE_SV(hv), PERL_MAGIC_tied);
1119 sv_magic(MUTABLE_SV(hv), TOPs, PERL_MAGIC_tied, NULL, 0);
6b05c17a 1120 }
a0d0e21e
LW		 1121 LEAVE;
1122 RETURN;
1123}
1124
a0d0e21e
LW		 1125PP(pp_sselect)
1126{
a0d0e21e 1127#ifdef HAS_SELECT
20b7effb 1128 dSP; dTARGET;
eb578fdb
KW		 1129 I32 i;
1130 I32 j;
1131 char *s;
1132 SV *sv;
65202027 1133 NV value;
a0d0e21e
LW		 1134 I32 maxlen = 0;
1135 I32 nfound;
1136 struct timeval timebuf;
1137 struct timeval *tbuf = &timebuf;
1138 I32 growsize;
1139 char *fd_sets[4];
e26c6904 1140 SV *svs[4];
a0d0e21e
LW		 1141#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1142 I32 masksize;
1143 I32 offset;
1144 I32 k;
1145
1146# if BYTEORDER & 0xf0000
1147# define ORDERBYTE (0x88888888 - BYTEORDER)
1148# else
1149# define ORDERBYTE (0x4444 - BYTEORDER)
1150# endif
1151
1152#endif
1153
1154 SP -= 4;
1155 for (i = 1; i <= 3; i++) {
e26c6904 1156 SV * const sv = svs[i] = SP[i];
9d6d5a79 1157 SvGETMAGIC(sv);
15547071
GA		 1158 if (!SvOK(sv))
1159 continue;
ba3062ae
FC		 1160 if (SvREADONLY(sv)) {
1161 if (!(SvPOK(sv) && SvCUR(sv) == 0))
cb077ed2 1162 Perl_croak_no_modify();
ba3062ae
FC		 1163 }
1164 else if (SvIsCOW(sv)) sv_force_normal_flags(sv, 0);
4ef2275c 1165 if (!SvPOK(sv)) {
9d6d5a79
FC		 1166 if (!SvPOKp(sv))
1167 Perl_ck_warner(aTHX_ packWARN(WARN_MISC),
1168 "Non-string passed as bitmask");
e26c6904
FC		 1169 if (SvGAMAGIC(sv)) {
1170 svs[i] = sv_newmortal();
1171 sv_copypv_nomg(svs[i], sv);
1172 }
1173 else
1174 SvPV_force_nomg_nolen(sv); /* force string conversion */
4ef2275c 1175 }
e26c6904 1176 j = SvCUR(svs[i]);
a0d0e21e
LW		 1177 if (maxlen < j)
1178 maxlen = j;
1179 }
1180
5ff3f7a4 1181/* little endians can use vecs directly */
e366b469 1182#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
5ff3f7a4 1183# ifdef NFDBITS
a0d0e21e 1184
5ff3f7a4
GS		 1185# ifndef NBBY
1186# define NBBY 8
1187# endif
a0d0e21e
LW		 1188
1189 masksize = NFDBITS / NBBY;
5ff3f7a4 1190# else
a0d0e21e 1191 masksize = sizeof(long); /* documented int, everyone seems to use long */
5ff3f7a4 1192# endif
a0d0e21e
LW		 1193 Zero(&fd_sets[0], 4, char*);
1194#endif
1195
ad517f75
MHM		 1196# if SELECT_MIN_BITS == 1
1197 growsize = sizeof(fd_set);
1198# else
1199# if defined(__GLIBC__) && defined(__FD_SETSIZE)
1200# undef SELECT_MIN_BITS
1201# define SELECT_MIN_BITS __FD_SETSIZE
1202# endif
e366b469
PG		 1203 /* If SELECT_MIN_BITS is greater than one we most probably will want
1204 * to align the sizes with SELECT_MIN_BITS/8 because for example
1205 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
f05550c0 1206 * UNIX, Solaris, Darwin) the smallest quantum select() operates
e366b469
PG		 1207 * on (sets/tests/clears bits) is 32 bits. */
1208 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
e366b469
PG		 1209# endif
1210
a0d0e21e 1211 sv = SP[4];
90eaaf02 1212 SvGETMAGIC(sv);
a0d0e21e 1213 if (SvOK(sv)) {
90eaaf02 1214 value = SvNV_nomg(sv);
a0d0e21e
LW		 1215 if (value < 0.0)
1216 value = 0.0;
1217 timebuf.tv_sec = (long)value;
65202027 1218 value -= (NV)timebuf.tv_sec;
a0d0e21e
LW		 1219 timebuf.tv_usec = (long)(value * 1000000.0);
1220 }
1221 else
4608196e 1222 tbuf = NULL;
a0d0e21e
LW		 1223
1224 for (i = 1; i <= 3; i++) {
e26c6904 1225 sv = svs[i];
15547071 1226 if (!SvOK(sv) || SvCUR(sv) == 0) {
a0d0e21e
LW		 1227 fd_sets[i] = 0;
1228 continue;
1229 }
4ef2275c 1230 assert(SvPOK(sv));
a0d0e21e
LW		 1231 j = SvLEN(sv);
1232 if (j < growsize) {
1233 Sv_Grow(sv, growsize);
a0d0e21e 1234 }
c07a80fd 1235 j = SvCUR(sv);
1236 s = SvPVX(sv) + j;
1237 while (++j <= growsize) {
1238 *s++ = '\0';
1239 }
1240
a0d0e21e
LW		 1241#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1242 s = SvPVX(sv);
a02a5408 1243 Newx(fd_sets[i], growsize, char);
a0d0e21e
LW		 1244 for (offset = 0; offset < growsize; offset += masksize) {
1245 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1246 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1247 }
1248#else
1249 fd_sets[i] = SvPVX(sv);
1250#endif
1251 }
1252
dc4c69d9
JH		 1253#ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1254 /* Can't make just the (void*) conditional because that would be
1255 * cpp #if within cpp macro, and not all compilers like that. */
1256 nfound = PerlSock_select(
1257 maxlen * 8,
1258 (Select_fd_set_t) fd_sets[1],
1259 (Select_fd_set_t) fd_sets[2],
1260 (Select_fd_set_t) fd_sets[3],
1261 (void*) tbuf); /* Workaround for compiler bug. */
1262#else
6ad3d225 1263 nfound = PerlSock_select(
a0d0e21e
LW		 1264 maxlen * 8,
1265 (Select_fd_set_t) fd_sets[1],
1266 (Select_fd_set_t) fd_sets[2],
1267 (Select_fd_set_t) fd_sets[3],
1268 tbuf);
dc4c69d9 1269#endif
a0d0e21e
LW		 1270 for (i = 1; i <= 3; i++) {
1271 if (fd_sets[i]) {
e26c6904 1272 sv = svs[i];
a0d0e21e
LW		 1273#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1274 s = SvPVX(sv);
1275 for (offset = 0; offset < growsize; offset += masksize) {
1276 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1277 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1278 }
1279 Safefree(fd_sets[i]);
1280#endif
e26c6904
FC		 1281 if (sv != SP[i])
1282 SvSetMagicSV(SP[i], sv);
1283 else
1284 SvSETMAGIC(sv);
a0d0e21e
LW		 1285 }
1286 }
1287
4189264e 1288 PUSHi(nfound);
82334630 1289 if (GIMME_V == G_ARRAY && tbuf) {
65202027
DS		 1290 value = (NV)(timebuf.tv_sec) +
1291 (NV)(timebuf.tv_usec) / 1000000.0;
6e449a3a 1292 mPUSHn(value);
a0d0e21e
LW		 1293 }
1294 RETURN;
1295#else
cea2e8a9 1296 DIE(aTHX_ "select not implemented");
a0d0e21e
LW		 1297#endif
1298}
1299
8226a3d7 1300/*
dcccc8ff
KW		 1301
1302=head1 GV Functions
1303
8226a3d7
NC		 1304=for apidoc setdefout
1305
796b6530
KW		 1306Sets C<PL_defoutgv>, the default file handle for output, to the passed in
1307typeglob. As C<PL_defoutgv> "owns" a reference on its typeglob, the reference
8226a3d7 1308count of the passed in typeglob is increased by one, and the reference count
796b6530 1309of the typeglob that C<PL_defoutgv> points to is decreased by one.
8226a3d7
NC		 1310
1311=cut
1312*/
1313
4633a7c4 1314void
864dbfa3 1315Perl_setdefout(pTHX_ GV *gv)
4633a7c4 1316{
656457d0
DM		 1317 GV *oldgv = PL_defoutgv;
1318
9a9bb270 1319 PERL_ARGS_ASSERT_SETDEFOUT;
656457d0 1320
9a9bb270 1321 SvREFCNT_inc_simple_void_NN(gv);
3280af22 1322 PL_defoutgv = gv;
656457d0 1323 SvREFCNT_dec(oldgv);
4633a7c4
LW		 1324}
1325
a0d0e21e
LW		 1326PP(pp_select)
1327{
20b7effb 1328 dSP; dTARGET;
4633a7c4 1329 HV *hv;
159b6efe 1330 GV * const newdefout = (PL_op->op_private > 0) ? (MUTABLE_GV(POPs)) : NULL;
099be4f1 1331 GV * egv = GvEGVx(PL_defoutgv);
0df2568b 1332 GV * const *gvp;
4633a7c4 1333
4633a7c4 1334 if (!egv)
3280af22 1335 egv = PL_defoutgv;
099be4f1 1336 hv = isGV_with_GP(egv) ? GvSTASH(egv) : NULL;
0df2568b 1337 gvp = hv && HvENAME(hv)
204263bc
FC		 1338 ? (GV**)hv_fetch(hv, GvNAME(egv), HEK_UTF8(GvNAME_HEK(egv)) ? -GvNAMELEN(egv) : GvNAMELEN(egv), FALSE)
1339 : NULL;
0df2568b 1340 if (gvp && *gvp == egv) {
bd61b366 1341 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
f86702cc 1342 XPUSHTARG;
0df2568b
FC		 1343 }
1344 else {
ad64d0ec 1345 mXPUSHs(newRV(MUTABLE_SV(egv)));
4633a7c4
LW		 1346 }
1347
1348 if (newdefout) {
ded8aa31
GS		 1349 if (!GvIO(newdefout))
1350 gv_IOadd(newdefout);
4633a7c4
LW		 1351 setdefout(newdefout);
1352 }
1353
a0d0e21e
LW		 1354 RETURN;
1355}
1356
1357PP(pp_getc)
1358{
20b7effb 1359 dSP; dTARGET;
12dc5f94
DM		 1360 /* pp_coreargs pushes a NULL to indicate no args passed to
1361 * CORE::getc() */
30901a8a
FC		 1362 GV * const gv =
1363 MAXARG==0 || (!TOPs && !POPs) ? PL_stdingv : MUTABLE_GV(POPs);
9c9f25b8 1364 IO *const io = GvIO(gv);
2ae324a7 1365
ac3697cd
NC		 1366 if (MAXARG == 0)
1367 EXTEND(SP, 1);
1368
9c9f25b8 1369 if (io) {
a5e1d062 1370 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1371 if (mg) {
1c23e2bd 1372 const U8 gimme = GIMME_V;
3e0cb5de 1373 Perl_tied_method(aTHX_ SV_CONST(GETC), SP, MUTABLE_SV(io), mg, gimme, 0);
0240605e
NC		 1374 if (gimme == G_SCALAR) {
1375 SPAGAIN;
a79db61d 1376 SvSetMagicSV_nosteal(TARG, TOPs);
0240605e
NC		 1377 }
1378 return NORMAL;
a79db61d 1379 }
2ae324a7 1380 }
90133b69 1381 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
51087808 1382 if (!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
831e4cc3 1383 report_evil_fh(gv);
b5fe5ca2 1384 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1385 RETPUSHUNDEF;
90133b69 1386 }
bbce6d69 1387 TAINT;
76f68e9b 1388 sv_setpvs(TARG, " ");
9bc64814 1389 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
7d59b7e4
NIS		 1390 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1391 /* Find out how many bytes the char needs */
aa07b2f6 1392 Size_t len = UTF8SKIP(SvPVX_const(TARG));
7d59b7e4
NIS		 1393 if (len > 1) {
1394 SvGROW(TARG,len+1);
1395 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1396 SvCUR_set(TARG,1+len);
1397 }
1398 SvUTF8_on(TARG);
1399 }
88c34251 1400 else SvUTF8_off(TARG);
a0d0e21e
LW		 1401 PUSHTARG;
1402 RETURN;
1403}
1404
76e3520e 1405STATIC OP *
cea2e8a9 1406S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
a0d0e21e 1407{
eb578fdb 1408 PERL_CONTEXT *cx;
1c23e2bd 1409 const U8 gimme = GIMME_V;
a0d0e21e 1410
7918f24d
NC		 1411 PERL_ARGS_ASSERT_DOFORM;
1412
535e48ea 1413 if (CvCLONE(cv))
7b190374
NC		 1414 cv = MUTABLE_CV(sv_2mortal(MUTABLE_SV(cv_clone(cv))));
1415
ed8ff0f3 1416 cx = cx_pushblock(CXt_FORMAT, gimme, PL_stack_sp, PL_savestack_ix);
6a7d52cc 1417 cx_pushformat(cx, cv, retop, gv);
d2af2719 1418 if (CvDEPTH(cv) >= 2)
f32c7e86 1419 pad_push(CvPADLIST(cv), CvDEPTH(cv));
f32c7e86 1420 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), CvDEPTH(cv));
a0d0e21e 1421
4633a7c4 1422 setdefout(gv); /* locally select filehandle so $% et al work */
a0d0e21e
LW		 1423 return CvSTART(cv);
1424}
1425
1426PP(pp_enterwrite)
1427{
39644a26 1428 dSP;
eb578fdb
KW		 1429 GV *gv;
1430 IO *io;
a0d0e21e 1431 GV *fgv;
07822e36 1432 CV *cv = NULL;
a0d0e21e 1433
2addaaf3 1434 if (MAXARG == 0) {
2addaaf3 1435 EXTEND(SP, 1);
49225470 1436 gv = PL_defoutgv;
2addaaf3 1437 }
a0d0e21e 1438 else {
159b6efe 1439 gv = MUTABLE_GV(POPs);
a0d0e21e 1440 if (!gv)
3280af22 1441 gv = PL_defoutgv;
a0d0e21e 1442 }
a0d0e21e
LW		 1443 io = GvIO(gv);
1444 if (!io) {
1445 RETPUSHNO;
1446 }
1447 if (IoFMT_GV(io))
1448 fgv = IoFMT_GV(io);
1449 else
1450 fgv = gv;
1451
2d1ebc9b 1452 assert(fgv);
a79db61d 1453
a0d0e21e 1454 cv = GvFORM(fgv);
a0d0e21e 1455 if (!cv) {
19742f39 1456 SV * const tmpsv = sv_newmortal();
f4a7049d 1457 gv_efullname4(tmpsv, fgv, NULL, FALSE);
147e3846 1458 DIE(aTHX_ "Undefined format \"%" SVf "\" called", SVfARG(tmpsv));
a0d0e21e 1459 }
44a8e56a 1460 IoFLAGS(io) &= ~IOf_DIDTOP;
8e4ecf23 1461 RETURNOP(doform(cv,gv,PL_op->op_next));
a0d0e21e
LW		 1462}
1463
1464PP(pp_leavewrite)
1465{
20b7effb 1466 dSP;
4ebe6e95 1467 GV * const gv = CX_CUR()->blk_format.gv;
eb578fdb 1468 IO * const io = GvIOp(gv);
8b8cacda 1469 PerlIO *ofp;
760ac839 1470 PerlIO *fp;
eb578fdb 1471 PERL_CONTEXT *cx;
8f89e5a9 1472 OP *retop;
617a4f41 1473 bool is_return = cBOOL(PL_op->op_type == OP_RETURN);
a0d0e21e 1474
617a4f41 1475 if (is_return || !io || !(ofp = IoOFP(io)))
8b8cacda
B		 1476 goto forget_top;
1477
760ac839 1478 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1479 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
8b8cacda 1480
3280af22
NIS		 1481 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1482 PL_formtarget != PL_toptarget)
a0d0e21e 1483 {
4633a7c4
LW		 1484 GV *fgv;
1485 CV *cv;
a0d0e21e
LW		 1486 if (!IoTOP_GV(io)) {
1487 GV *topgv;
a0d0e21e
LW		 1488
1489 if (!IoTOP_NAME(io)) {
1b6737cc 1490 SV *topname;
a0d0e21e
LW		 1491 if (!IoFMT_NAME(io))
1492 IoFMT_NAME(io) = savepv(GvNAME(gv));
147e3846 1493 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%" HEKf "_TOP",
d0c0e7dd 1494 HEKfARG(GvNAME_HEK(gv))));
f776e3cd 1495 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
748a9306 1496 if ((topgv && GvFORM(topgv)) ||
fafc274c 1497 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
2e0de35c 1498 IoTOP_NAME(io) = savesvpv(topname);
a0d0e21e 1499 else
89529cee 1500 IoTOP_NAME(io) = savepvs("top");
a0d0e21e 1501 }
f776e3cd 1502 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
a0d0e21e 1503 if (!topgv || !GvFORM(topgv)) {
b929a54b 1504 IoLINES_LEFT(io) = IoPAGE_LEN(io);
a0d0e21e
LW		 1505 goto forget_top;
1506 }
1507 IoTOP_GV(io) = topgv;
1508 }
748a9306
LW		 1509 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1510 I32 lines = IoLINES_LEFT(io);
504618e9 1511 const char *s = SvPVX_const(PL_formtarget);
5716a028 1512 const char *e = SvEND(PL_formtarget);
8e07c86e
AD		 1513 if (lines <= 0) /* Yow, header didn't even fit!!! */
1514 goto forget_top;
748a9306 1515 while (lines-- > 0) {
5716a028 1516 s = (char *) memchr(s, '\n', e - s);
748a9306
LW		 1517 if (!s)
1518 break;
1519 s++;
1520 }
1521 if (s) {
f54cb97a 1522 const STRLEN save = SvCUR(PL_formtarget);
aa07b2f6 1523 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
d75029d0
NIS		 1524 do_print(PL_formtarget, ofp);
1525 SvCUR_set(PL_formtarget, save);
3280af22
NIS		 1526 sv_chop(PL_formtarget, s);
1527 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW		 1528 }
1529 }
a0d0e21e 1530 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
f6dfc736 1531 do_print(GvSV(gv_fetchpvs("\f", GV_ADD, SVt_PV)), ofp);
a0d0e21e
LW		 1532 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1533 IoPAGE(io)++;
3280af22 1534 PL_formtarget = PL_toptarget;
748a9306 1535 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4 1536 fgv = IoTOP_GV(io);
636013b3 1537 assert(fgv); /* IoTOP_GV(io) should have been set above */
4633a7c4 1538 cv = GvFORM(fgv);
1df70142
AL		 1539 if (!cv) {
1540 SV * const sv = sv_newmortal();
bd61b366 1541 gv_efullname4(sv, fgv, NULL, FALSE);
147e3846 1542 DIE(aTHX_ "Undefined top format \"%" SVf "\" called", SVfARG(sv));
4633a7c4 1543 }
43cd5cb7 1544 return doform(cv, gv, PL_op);
a0d0e21e
LW		 1545 }
1546
1547 forget_top:
4ebe6e95 1548 cx = CX_CUR();
4df352a8
DM		 1549 assert(CxTYPE(cx) == CXt_FORMAT);
1550 SP = PL_stack_base + cx->blk_oldsp; /* ignore retval of formline */
2f450c1b 1551 CX_LEAVE_SCOPE(cx);
6a7d52cc 1552 cx_popformat(cx);
ed8ff0f3 1553 cx_popblock(cx);
8f89e5a9 1554 retop = cx->blk_sub.retop;
5da525e9 1555 CX_POP(cx);
a0d0e21e 1556
b7effc98
DM		 1557 EXTEND(SP, 1);
1558
617a4f41
DM		 1559 if (is_return)
1560 /* XXX the semantics of doing 'return' in a format aren't documented.
1561 * Currently we ignore any args to 'return' and just return
1562 * a single undef in both scalar and list contexts
1563 */
1564 PUSHs(&PL_sv_undef);
1565 else if (!io || !(fp = IoOFP(io))) {
c782dc1d 1566 if (io && IoIFP(io))
7716c5c5 1567 report_wrongway_fh(gv, '<');
c521cf7c 1568 else
7716c5c5 1569 report_evil_fh(gv);
3280af22 1570 PUSHs(&PL_sv_no);
a0d0e21e
LW		 1571 }
1572 else {
3280af22 1573 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
a2a5de95 1574 Perl_ck_warner(aTHX_ packWARN(WARN_IO), "page overflow");
a0d0e21e 1575 }
d75029d0 1576 if (!do_print(PL_formtarget, fp))
3280af22 1577 PUSHs(&PL_sv_no);
a0d0e21e 1578 else {
3280af22
NIS		 1579 FmLINES(PL_formtarget) = 0;
1580 SvCUR_set(PL_formtarget, 0);
1581 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1582 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1583 (void)PerlIO_flush(fp);
3280af22 1584 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1585 }
1586 }
3280af22 1587 PL_formtarget = PL_bodytarget;
8e4ecf23 1588 RETURNOP(retop);
a0d0e21e
LW		 1589}
1590
1591PP(pp_prtf)
1592{
20b7effb 1593 dSP; dMARK; dORIGMARK;
760ac839 1594 PerlIO *fp;
a0d0e21e 1595
159b6efe
NC		 1596 GV * const gv
1597 = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv;
9c9f25b8 1598 IO *const io = GvIO(gv);
46fc3d4c 1599
87385d72
FC		 1600 /* Treat empty list as "" */
1601 if (MARK == SP) XPUSHs(&PL_sv_no);
1602
9c9f25b8 1603 if (io) {
a5e1d062 1604 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d
AL		 1605 if (mg) {
1606 if (MARK == ORIGMARK) {
1607 MEXTEND(SP, 1);
1608 ++MARK;
1609 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1610 ++SP;
1611 }
3e0cb5de 1612 return Perl_tied_method(aTHX_ SV_CONST(PRINTF), mark - 1, MUTABLE_SV(io),
d682515d
NC		 1613 mg,
1614 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1615 sp - mark);
a79db61d 1616 }
46fc3d4c 1617 }
1618
9c9f25b8 1619 if (!io) {
51087808 1620 report_evil_fh(gv);
93189314 1621 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW		 1622 goto just_say_no;
1623 }
1624 else if (!(fp = IoOFP(io))) {
7716c5c5
NC		 1625 if (IoIFP(io))
1626 report_wrongway_fh(gv, '<');
1627 else if (ckWARN(WARN_CLOSED))
1628 report_evil_fh(gv);
93189314 1629 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
a0d0e21e
LW		 1630 goto just_say_no;
1631 }
1632 else {
c7bd8b84 1633 SV *sv = sv_newmortal();
a0d0e21e
LW		 1634 do_sprintf(sv, SP - MARK, MARK + 1);
1635 if (!do_print(sv, fp))
1636 goto just_say_no;
1637
1638 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1639 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW		 1640 goto just_say_no;
1641 }
a0d0e21e 1642 SP = ORIGMARK;
3280af22 1643 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1644 RETURN;
1645
1646 just_say_no:
a0d0e21e 1647 SP = ORIGMARK;
3280af22 1648 PUSHs(&PL_sv_undef);
a0d0e21e
LW		 1649 RETURN;
1650}
1651
c07a80fd 1652PP(pp_sysopen)
1653{
39644a26 1654 dSP;
de5e49e1 1655 const int perm = (MAXARG > 3 && (TOPs || POPs)) ? POPi : 0666;
1df70142 1656 const int mode = POPi;
1b6737cc 1657 SV * const sv = POPs;
159b6efe 1658 GV * const gv = MUTABLE_GV(POPs);
1b6737cc 1659 STRLEN len;
c07a80fd 1660
4592e6ca 1661 /* Need TIEHANDLE method ? */
1b6737cc 1662 const char * const tmps = SvPV_const(sv, len);
7e30e49f 1663 if (do_open_raw(gv, tmps, len, mode, perm, NULL)) {
c07a80fd 1664 IoLINES(GvIOp(gv)) = 0;
3280af22 1665 PUSHs(&PL_sv_yes);
c07a80fd 1666 }
1667 else {
3280af22 1668 PUSHs(&PL_sv_undef);
c07a80fd 1669 }
1670 RETURN;
1671}
1672
b1c05ba5
DM		 1673
1674/* also used for: pp_read() and pp_recv() (where supported) */
1675
a0d0e21e
LW		 1676PP(pp_sysread)
1677{
20b7effb 1678 dSP; dMARK; dORIGMARK; dTARGET;
0b423688 1679 SSize_t offset;
a0d0e21e
LW		 1680 IO *io;
1681 char *buffer;
0b423688 1682 STRLEN orig_size;
5b54f415 1683 SSize_t length;
eb5c063a 1684 SSize_t count;
748a9306 1685 SV *bufsv;
a0d0e21e 1686 STRLEN blen;
eb5c063a 1687 int fp_utf8;
1dd30107
NC		 1688 int buffer_utf8;
1689 SV *read_target;
eb5c063a
NIS		 1690 Size_t got = 0;
1691 Size_t wanted;
1d636c13 1692 bool charstart = FALSE;
87330c3c
JH		 1693 STRLEN charskip = 0;
1694 STRLEN skip = 0;
159b6efe 1695 GV * const gv = MUTABLE_GV(*++MARK);
375ed12a
JH		 1696 int fd;
1697
5b468f54 1698 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1b6737cc 1699 && gv && (io = GvIO(gv)) )
137443ea 1700 {
a5e1d062 1701 const MAGIC *const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1b6737cc 1702 if (mg) {
3e0cb5de 1703 return Perl_tied_method(aTHX_ SV_CONST(READ), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC		 1704 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1705 sp - mark);
1b6737cc 1706 }
2ae324a7 1707 }
1708
a0d0e21e
LW		 1709 if (!gv)
1710 goto say_undef;
748a9306 1711 bufsv = *++MARK;
ff68c719 1712 if (! SvOK(bufsv))
60e13354 1713 SvPVCLEAR(bufsv);
a0d0e21e 1714 length = SvIVx(*++MARK);
4bac9ae4
CS		 1715 if (length < 0)
1716 DIE(aTHX_ "Negative length");
748a9306 1717 SETERRNO(0,0);
a0d0e21e
LW		 1718 if (MARK < SP)
1719 offset = SvIVx(*++MARK);
1720 else
1721 offset = 0;
1722 io = GvIO(gv);
b5fe5ca2 1723 if (!io || !IoIFP(io)) {
51087808 1724 report_evil_fh(gv);
b5fe5ca2 1725 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1726 goto say_undef;
b5fe5ca2 1727 }
375ed12a
JH		 1728
1729 /* Note that fd can here validly be -1, don't check it yet. */
1730 fd = PerlIO_fileno(IoIFP(io));
1731
0064a8a9 1732 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
fb10a8a7 1733 if (PL_op->op_type == OP_SYSREAD || PL_op->op_type == OP_RECV) {
89e5a021 1734 Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED),
1972ac5c
A		 1735 "%s() is deprecated on :utf8 handles. "
1736 "This will be a fatal error in Perl 5.30",
89e5a021 1737 OP_DESC(PL_op));
fb10a8a7 1738 }
7d59b7e4 1739 buffer = SvPVutf8_force(bufsv, blen);
1e54db1a 1740 /* UTF-8 may not have been set if they are all low bytes */
eb5c063a 1741 SvUTF8_on(bufsv);
9b9d7ce8 1742 buffer_utf8 = 0;
7d59b7e4
NIS		 1743 }
1744 else {
1745 buffer = SvPV_force(bufsv, blen);
1dd30107 1746 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
7d59b7e4 1747 }
4bac9ae4 1748 if (DO_UTF8(bufsv)) {
3f914778 1749 blen = sv_len_utf8_nomg(bufsv);
4bac9ae4 1750 }
7d59b7e4 1751
d0965105
JH		 1752 charstart = TRUE;
1753 charskip = 0;
87330c3c 1754 skip = 0;
4bac9ae4 1755 wanted = length;
d0965105 1756
a0d0e21e 1757#ifdef HAS_SOCKET
533c011a 1758 if (PL_op->op_type == OP_RECV) {
0b423688 1759 Sock_size_t bufsize;
46fc3d4c 1760 char namebuf[MAXPATHLEN];
375ed12a
JH		 1761 if (fd < 0) {
1762 SETERRNO(EBADF,SS_IVCHAN);
78e69e60 1763 goto say_undef;
375ed12a 1764 }
b5afd346 1765#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
490ab354
JH		 1766 bufsize = sizeof (struct sockaddr_in);
1767#else
46fc3d4c 1768 bufsize = sizeof namebuf;
490ab354 1769#endif
abf95952
IZ		 1770#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1771 if (bufsize >= 256)
1772 bufsize = 255;
1773#endif
eb160463 1774 buffer = SvGROW(bufsv, (STRLEN)(length+1));
bbce6d69 1775 /* 'offset' means 'flags' here */
375ed12a 1776 count = PerlSock_recvfrom(fd, buffer, length, offset,
10edeb5d 1777 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1778 if (count < 0)
78e69e60 1779 goto say_undef;
8eb023a9
DM		 1780 /* MSG_TRUNC can give oversized count; quietly lose it */
1781 if (count > length)
1782 count = length;
eb5c063a 1783 SvCUR_set(bufsv, count);
748a9306
LW		 1784 *SvEND(bufsv) = '\0';
1785 (void)SvPOK_only(bufsv);
eb5c063a
NIS		 1786 if (fp_utf8)
1787 SvUTF8_on(bufsv);
748a9306 1788 SvSETMAGIC(bufsv);
aac0dd9a 1789 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1790 if (!(IoFLAGS(io) & IOf_UNTAINT))
1791 SvTAINTED_on(bufsv);
a0d0e21e 1792 SP = ORIGMARK;
e122534c
TC		 1793#if defined(__CYGWIN__)
1794 /* recvfrom() on cygwin doesn't set bufsize at all for
1795 connected sockets, leaving us with trash in the returned
1796 name, so use the same test as the Win32 code to check if it
1797 wasn't set, and set it [perl #118843] */
1798 if (bufsize == sizeof namebuf)
1799 bufsize = 0;
1800#endif
46fc3d4c 1801 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW		 1802 PUSHs(TARG);
1803 RETURN;
1804 }
a0d0e21e 1805#endif
bbce6d69 1806 if (offset < 0) {
0b423688 1807 if (-offset > (SSize_t)blen)
cea2e8a9 1808 DIE(aTHX_ "Offset outside string");
bbce6d69 1809 offset += blen;
1810 }
eb5c063a
NIS		 1811 if (DO_UTF8(bufsv)) {
1812 /* convert offset-as-chars to offset-as-bytes */
d5f981bb 1813 if (offset >= (SSize_t)blen)
6960c29a
CH		 1814 offset += SvCUR(bufsv) - blen;
1815 else
1816 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
eb5c063a 1817 }
375ed12a 1818
eb5c063a 1819 more_bytes:
375ed12a
JH		 1820 /* Reestablish the fd in case it shifted from underneath us. */
1821 fd = PerlIO_fileno(IoIFP(io));
1822
0b423688 1823 orig_size = SvCUR(bufsv);
1dd30107
NC		 1824 /* Allocating length + offset + 1 isn't perfect in the case of reading
1825 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1826 unduly.
1827 (should be 2 * length + offset + 1, or possibly something longer if
47e13f24 1828 IN_ENCODING Is true) */
eb160463 1829 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
0b423688
TC		 1830 if (offset > 0 && offset > (SSize_t)orig_size) { /* Zero any newly allocated space */
1831 Zero(buffer+orig_size, offset-orig_size, char);
cd52b7b2 1832 }
eb5c063a 1833 buffer = buffer + offset;
1dd30107
NC		 1834 if (!buffer_utf8) {
1835 read_target = bufsv;
1836 } else {
1837 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1838 concatenate it to the current buffer. */
1839
1840 /* Truncate the existing buffer to the start of where we will be
1841 reading to: */
1842 SvCUR_set(bufsv, offset);
1843
1844 read_target = sv_newmortal();
862a34c6 1845 SvUPGRADE(read_target, SVt_PV);
fe2774ed 1846 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1dd30107 1847 }
eb5c063a 1848
533c011a 1849 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1850#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1851 if (IoTYPE(io) == IoTYPE_SOCKET) {
375ed12a
JH		 1852 if (fd < 0) {
1853 SETERRNO(EBADF,SS_IVCHAN);
1854 count = -1;
1855 }
1856 else
1857 count = PerlSock_recv(fd, buffer, length, 0);
a7092146
GS		 1858 }
1859 else
1860#endif
1861 {
375ed12a
JH		 1862 if (fd < 0) {
1863 SETERRNO(EBADF,RMS_IFI);
1864 count = -1;
1865 }
1866 else
1867 count = PerlLIO_read(fd, buffer, length);
a7092146 1868 }
a0d0e21e
LW		 1869 }
1870 else
3b02c43c 1871 {
eb5c063a
NIS		 1872 count = PerlIO_read(IoIFP(io), buffer, length);
1873 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1874 if (count == 0 && PerlIO_error(IoIFP(io)))
1875 count = -1;
3b02c43c 1876 }
eb5c063a 1877 if (count < 0) {
7716c5c5 1878 if (IoTYPE(io) == IoTYPE_WRONLY)
a5390457 1879 report_wrongway_fh(gv, '>');
a0d0e21e 1880 goto say_undef;
af8c498a 1881 }
aa07b2f6 1882 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1dd30107
NC		 1883 *SvEND(read_target) = '\0';
1884 (void)SvPOK_only(read_target);
0064a8a9 1885 if (fp_utf8 && !IN_BYTES) {
eb5c063a 1886 /* Look at utf8 we got back and count the characters */
1df70142 1887 const char *bend = buffer + count;
eb5c063a 1888 while (buffer < bend) {
d0965105
JH		 1889 if (charstart) {
1890 skip = UTF8SKIP(buffer);
1891 charskip = 0;
1892 }
1893 if (buffer - charskip + skip > bend) {
eb5c063a
NIS		 1894 /* partial character - try for rest of it */
1895 length = skip - (bend-buffer);
aa07b2f6 1896 offset = bend - SvPVX_const(bufsv);
d0965105
JH		 1897 charstart = FALSE;
1898 charskip += count;
eb5c063a
NIS		 1899 goto more_bytes;
1900 }
1901 else {
1902 got++;
1903 buffer += skip;
d0965105
JH		 1904 charstart = TRUE;
1905 charskip = 0;
eb5c063a
NIS		 1906 }
1907 }
1908 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1909 provided amount read (count) was what was requested (length)
1910 */
1911 if (got < wanted && count == length) {
d0965105 1912 length = wanted - got;
aa07b2f6 1913 offset = bend - SvPVX_const(bufsv);
eb5c063a
NIS		 1914 goto more_bytes;
1915 }
1916 /* return value is character count */
1917 count = got;
1918 SvUTF8_on(bufsv);
1919 }
1dd30107
NC		 1920 else if (buffer_utf8) {
1921 /* Let svcatsv upgrade the bytes we read in to utf8.
1922 The buffer is a mortal so will be freed soon. */
1923 sv_catsv_nomg(bufsv, read_target);
1924 }
748a9306 1925 SvSETMAGIC(bufsv);
aac0dd9a 1926 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1927 if (!(IoFLAGS(io) & IOf_UNTAINT))
1928 SvTAINTED_on(bufsv);
a0d0e21e 1929 SP = ORIGMARK;
eb5c063a 1930 PUSHi(count);
a0d0e21e
LW		 1931 RETURN;
1932
1933 say_undef:
1934 SP = ORIGMARK;
1935 RETPUSHUNDEF;
1936}
1937
b1c05ba5
DM		 1938
1939/* also used for: pp_send() where defined */
1940
60504e18 1941PP(pp_syswrite)
a0d0e21e 1942{
20b7effb 1943 dSP; dMARK; dORIGMARK; dTARGET;
748a9306 1944 SV *bufsv;
83003860 1945 const char *buffer;
8c99d73e 1946 SSize_t retval;
a0d0e21e 1947 STRLEN blen;
c9cb0f41 1948 STRLEN orig_blen_bytes;
64a1bc8e 1949 const int op_type = PL_op->op_type;
c9cb0f41
NC		 1950 bool doing_utf8;
1951 U8 *tmpbuf = NULL;
159b6efe 1952 GV *const gv = MUTABLE_GV(*++MARK);
91472ad4 1953 IO *const io = GvIO(gv);
375ed12a 1954 int fd;
91472ad4
NC		 1955
1956 if (op_type == OP_SYSWRITE && io) {
a5e1d062 1957 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1958 if (mg) {
a79db61d 1959 if (MARK == SP - 1) {
c8834ab7
TC		 1960 SV *sv = *SP;
1961 mXPUSHi(sv_len(sv));
a79db61d
AL		 1962 PUTBACK;
1963 }
1964
3e0cb5de 1965 return Perl_tied_method(aTHX_ SV_CONST(WRITE), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC		 1966 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1967 sp - mark);
64a1bc8e 1968 }
1d603a67 1969 }
a0d0e21e
LW		 1970 if (!gv)
1971 goto say_undef;
64a1bc8e 1972
748a9306 1973 bufsv = *++MARK;
64a1bc8e 1974
748a9306 1975 SETERRNO(0,0);
cf167416 1976 if (!io || !IoIFP(io) || IoTYPE(io) == IoTYPE_RDONLY) {
8c99d73e 1977 retval = -1;
51087808
NC		 1978 if (io && IoIFP(io))
1979 report_wrongway_fh(gv, '<');
1980 else
1981 report_evil_fh(gv);
b5fe5ca2 1982 SETERRNO(EBADF,RMS_IFI);
7d59b7e4
NIS		 1983 goto say_undef;
1984 }
375ed12a
JH		 1985 fd = PerlIO_fileno(IoIFP(io));
1986 if (fd < 0) {
1987 SETERRNO(EBADF,SS_IVCHAN);
1988 retval = -1;
1989 goto say_undef;
1990 }
7d59b7e4 1991
c9cb0f41
NC		 1992 /* Do this first to trigger any overloading. */
1993 buffer = SvPV_const(bufsv, blen);
1994 orig_blen_bytes = blen;
1995 doing_utf8 = DO_UTF8(bufsv);
1996
7d59b7e4 1997 if (PerlIO_isutf8(IoIFP(io))) {
89e5a021 1998 Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED),
1972ac5c
A		 1999 "%s() is deprecated on :utf8 handles. "
2000 "This will be a fatal error in Perl 5.30",
89e5a021 2001 OP_DESC(PL_op));
6aa2f6a7 2002 if (!SvUTF8(bufsv)) {
c9cb0f41
NC		 2003 /* We don't modify the original scalar. */
2004 tmpbuf = bytes_to_utf8((const U8*) buffer, &blen);
2005 buffer = (char *) tmpbuf;
2006 doing_utf8 = TRUE;
2007 }
a0d0e21e 2008 }
c9cb0f41
NC		 2009 else if (doing_utf8) {
2010 STRLEN tmplen = blen;
a79db61d 2011 U8 * const result = bytes_from_utf8((const U8*) buffer, &tmplen, &doing_utf8);
c9cb0f41
NC		 2012 if (!doing_utf8) {
2013 tmpbuf = result;
2014 buffer = (char *) tmpbuf;
2015 blen = tmplen;
2016 }
2017 else {
2018 assert((char *)result == buffer);
2019 Perl_croak(aTHX_ "Wide character in %s", OP_DESC(PL_op));
2020 }
7d59b7e4
NIS		 2021 }
2022
e2712234 2023#ifdef HAS_SOCKET
7627e6d0 2024 if (op_type == OP_SEND) {
e2712234
NC		 2025 const int flags = SvIVx(*++MARK);
2026 if (SP > MARK) {
2027 STRLEN mlen;
2028 char * const sockbuf = SvPVx(*++MARK, mlen);
375ed12a 2029 retval = PerlSock_sendto(fd, buffer, blen,
e2712234
NC		 2030 flags, (struct sockaddr *)sockbuf, mlen);
2031 }
2032 else {
375ed12a 2033 retval = PerlSock_send(fd, buffer, blen, flags);
e2712234 2034 }
7627e6d0
NC		 2035 }
2036 else
e2712234 2037#endif
7627e6d0 2038 {
c9cb0f41
NC		 2039 Size_t length = 0; /* This length is in characters. */
2040 STRLEN blen_chars;
7d59b7e4 2041 IV offset;
c9cb0f41
NC		 2042
2043 if (doing_utf8) {
2044 if (tmpbuf) {
2045 /* The SV is bytes, and we've had to upgrade it. */
2046 blen_chars = orig_blen_bytes;
2047 } else {
2048 /* The SV really is UTF-8. */
3f914778
FC		 2049 /* Don't call sv_len_utf8 on a magical or overloaded
2050 scalar, as we might get back a different result. */
2051 blen_chars = sv_or_pv_len_utf8(bufsv, buffer, blen);
c9cb0f41
NC		 2052 }
2053 } else {
2054 blen_chars = blen;
2055 }
2056
2057 if (MARK >= SP) {
2058 length = blen_chars;
2059 } else {
2060#if Size_t_size > IVSIZE
2061 length = (Size_t)SvNVx(*++MARK);
2062#else
2063 length = (Size_t)SvIVx(*++MARK);
2064#endif
4b0c4b6f
NC		 2065 if ((SSize_t)length < 0) {
2066 Safefree(tmpbuf);
c9cb0f41 2067 DIE(aTHX_ "Negative length");
4b0c4b6f 2068 }
7d59b7e4 2069 }
c9cb0f41 2070
bbce6d69 2071 if (MARK < SP) {
a0d0e21e 2072 offset = SvIVx(*++MARK);
bbce6d69 2073 if (offset < 0) {
4b0c4b6f
NC		 2074 if (-offset > (IV)blen_chars) {
2075 Safefree(tmpbuf);
cea2e8a9 2076 DIE(aTHX_ "Offset outside string");
4b0c4b6f 2077 }
c9cb0f41 2078 offset += blen_chars;
3c946528 2079 } else if (offset > (IV)blen_chars) {
4b0c4b6f 2080 Safefree(tmpbuf);
cea2e8a9 2081 DIE(aTHX_ "Offset outside string");
4b0c4b6f 2082 }
bbce6d69 2083 } else
a0d0e21e 2084 offset = 0;
c9cb0f41
NC		 2085 if (length > blen_chars - offset)
2086 length = blen_chars - offset;
2087 if (doing_utf8) {
2088 /* Here we convert length from characters to bytes. */
2089 if (tmpbuf || SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
2090 /* Either we had to convert the SV, or the SV is magical, or
2091 the SV has overloading, in which case we can't or mustn't
2092 or mustn't call it again. */
2093
2094 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
2095 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
2096 } else {
2097 /* It's a real UTF-8 SV, and it's not going to change under
2098 us. Take advantage of any cache. */
2099 I32 start = offset;
2100 I32 len_I32 = length;
2101
2102 /* Convert the start and end character positions to bytes.
2103 Remember that the second argument to sv_pos_u2b is relative
2104 to the first. */
2105 sv_pos_u2b(bufsv, &start, &len_I32);
2106
2107 buffer += start;
2108 length = len_I32;
2109 }
7d59b7e4
NIS		 2110 }
2111 else {
2112 buffer = buffer+offset;
2113 }
a7092146 2114#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 2115 if (IoTYPE(io) == IoTYPE_SOCKET) {
375ed12a 2116 retval = PerlSock_send(fd, buffer, length, 0);
a7092146
GS		 2117 }
2118 else
2119#endif
2120 {
94e4c244 2121 /* See the note at doio.c:do_print about filesize limits. --jhi */
375ed12a 2122 retval = PerlLIO_write(fd, buffer, length);
a7092146 2123 }
a0d0e21e 2124 }
c9cb0f41 2125
8c99d73e 2126 if (retval < 0)
a0d0e21e
LW		 2127 goto say_undef;
2128 SP = ORIGMARK;
c9cb0f41 2129 if (doing_utf8)
f36eea10 2130 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
4b0c4b6f 2131
a79db61d 2132 Safefree(tmpbuf);
8c99d73e
GS		 2133#if Size_t_size > IVSIZE
2134 PUSHn(retval);
2135#else
2136 PUSHi(retval);
2137#endif
a0d0e21e
LW		 2138 RETURN;
2139
2140 say_undef:
a79db61d 2141 Safefree(tmpbuf);
a0d0e21e
LW		 2142 SP = ORIGMARK;
2143 RETPUSHUNDEF;
2144}
2145
a0d0e21e
LW		 2146PP(pp_eof)
2147{
20b7effb 2148 dSP;
a0d0e21e 2149 GV *gv;
32e65323 2150 IO *io;
a5e1d062 2151 const MAGIC *mg;
bc0c81ca
NC		 2152 /*
2153 * in Perl 5.12 and later, the additional parameter is a bitmask:
2154 * 0 = eof
2155 * 1 = eof(FH)
2156 * 2 = eof() <- ARGV magic
2157 *
2158 * I'll rely on the compiler's trace flow analysis to decide whether to
2159 * actually assign this out here, or punt it into the only block where it is
2160 * used. Doing it out here is DRY on the condition logic.
2161 */
2162 unsigned int which;
a0d0e21e 2163
bc0c81ca 2164 if (MAXARG) {
32e65323 2165 gv = PL_last_in_gv = MUTABLE_GV(POPs); /* eof(FH) */
bc0c81ca
NC		 2166 which = 1;
2167 }
b5f55170
NC		 2168 else {
2169 EXTEND(SP, 1);
2170
bc0c81ca 2171 if (PL_op->op_flags & OPf_SPECIAL) {
b5f55170 2172 gv = PL_last_in_gv = GvEGVx(PL_argvgv); /* eof() - ARGV magic */
bc0c81ca
NC		 2173 which = 2;
2174 }
2175 else {
b5f55170 2176 gv = PL_last_in_gv; /* eof */
bc0c81ca
NC		 2177 which = 0;
2178 }
b5f55170 2179 }
32e65323
CS		 2180
2181 if (!gv)
2182 RETPUSHNO;
2183
2184 if ((io = GvIO(gv)) && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) {
3e0cb5de 2185 return tied_method1(SV_CONST(EOF), SP, MUTABLE_SV(io), mg, newSVuv(which));
146174a9 2186 }
4592e6ca 2187
32e65323
CS		 2188 if (!MAXARG && (PL_op->op_flags & OPf_SPECIAL)) { /* eof() */
2189 if (io && !IoIFP(io)) {
b9f2b683 2190 if ((IoFLAGS(io) & IOf_START) && av_tindex(GvAVn(gv)) < 0) {
1037353b 2191 SV ** svp;
32e65323
CS		 2192 IoLINES(io) = 0;
2193 IoFLAGS(io) &= ~IOf_START;
d5eb9a46 2194 do_open6(gv, "-", 1, NULL, NULL, 0);
1037353b
DD		 2195 svp = &GvSV(gv);
2196 if (*svp) {
2197 SV * sv = *svp;
2198 sv_setpvs(sv, "-");
2199 SvSETMAGIC(sv);
2200 }
32e65323 2201 else
1037353b 2202 *svp = newSVpvs("-");
32e65323 2203 }
157fb5a1 2204 else if (!nextargv(gv, FALSE))
32e65323 2205 RETPUSHYES;
6136c704 2206 }
4592e6ca
NIS		 2207 }
2208
32e65323 2209 PUSHs(boolSV(do_eof(gv)));
a0d0e21e
LW		 2210 RETURN;
2211}
2212
2213PP(pp_tell)
2214{
20b7effb 2215 dSP; dTARGET;
301e8125 2216 GV *gv;
5b468f54 2217 IO *io;
a0d0e21e 2218
b64a1294 2219 if (MAXARG != 0 && (TOPs || POPs))
159b6efe 2220 PL_last_in_gv = MUTABLE_GV(POPs);
ac3697cd
NC		 2221 else
2222 EXTEND(SP, 1);
c4420975 2223 gv = PL_last_in_gv;
4592e6ca 2224
9c9f25b8
NC		 2225 io = GvIO(gv);
2226 if (io) {
a5e1d062 2227 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2228 if (mg) {
3e0cb5de 2229 return tied_method0(SV_CONST(TELL), SP, MUTABLE_SV(io), mg);
a79db61d 2230 }
4592e6ca 2231 }
f4817f32 2232 else if (!gv) {
f03173f2
RGS		 2233 if (!errno)
2234 SETERRNO(EBADF,RMS_IFI);
2235 PUSHi(-1);
2236 RETURN;
2237 }
4592e6ca 2238
146174a9
CB		 2239#if LSEEKSIZE > IVSIZE
2240 PUSHn( do_tell(gv) );
2241#else
a0d0e21e 2242 PUSHi( do_tell(gv) );
146174a9 2243#endif
a0d0e21e
LW		 2244 RETURN;
2245}
2246
b1c05ba5
DM		 2247
2248/* also used for: pp_seek() */
2249
137443ea 2250PP(pp_sysseek)
2251{
20b7effb 2252 dSP;
1df70142 2253 const int whence = POPi;
146174a9 2254#if LSEEKSIZE > IVSIZE
7452cf6a 2255 const Off_t offset = (Off_t)SvNVx(POPs);
146174a9 2256#else
7452cf6a 2257 const Off_t offset = (Off_t)SvIVx(POPs);
146174a9 2258#endif
a0d0e21e 2259
159b6efe 2260 GV * const gv = PL_last_in_gv = MUTABLE_GV(POPs);
9c9f25b8 2261 IO *const io = GvIO(gv);
4592e6ca 2262
9c9f25b8 2263 if (io) {
a5e1d062 2264 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2265 if (mg) {
cb50131a 2266#if LSEEKSIZE > IVSIZE
74f0b550 2267 SV *const offset_sv = newSVnv((NV) offset);
cb50131a 2268#else
74f0b550 2269 SV *const offset_sv = newSViv(offset);
cb50131a 2270#endif
bc0c81ca 2271
3e0cb5de 2272 return tied_method2(SV_CONST(SEEK), SP, MUTABLE_SV(io), mg, offset_sv,
d682515d 2273 newSViv(whence));
a79db61d 2274 }
4592e6ca
NIS		 2275 }
2276
533c011a 2277 if (PL_op->op_type == OP_SEEK)
8903cb82 2278 PUSHs(boolSV(do_seek(gv, offset, whence)));
2279 else {
0bcc34c2 2280 const Off_t sought = do_sysseek(gv, offset, whence);
b448e4fe 2281 if (sought < 0)
146174a9
CB		 2282 PUSHs(&PL_sv_undef);
2283 else {
7452cf6a 2284 SV* const sv = sought ?
146174a9 2285#if LSEEKSIZE > IVSIZE
b448e4fe 2286 newSVnv((NV)sought)
146174a9 2287#else
b448e4fe 2288 newSViv(sought)
146174a9
CB		 2289#endif
2290 : newSVpvn(zero_but_true, ZBTLEN);
6e449a3a 2291 mPUSHs(sv);
146174a9 2292 }
8903cb82 2293 }
a0d0e21e
LW		 2294 RETURN;
2295}
2296
2297PP(pp_truncate)
2298{
39644a26 2299 dSP;
8c99d73e
GS		 2300 /* There seems to be no consensus on the length type of truncate()
2301 * and ftruncate(), both off_t and size_t have supporters. In
2302 * general one would think that when using large files, off_t is
2303 * at least as wide as size_t, so using an off_t should be okay. */
2304 /* XXX Configure probe for the length type of *truncate() needed XXX */
0bcc34c2 2305 Off_t len;
a0d0e21e 2306
25342a55 2307#if Off_t_size > IVSIZE
0bcc34c2 2308 len = (Off_t)POPn;
8c99d73e 2309#else
0bcc34c2 2310 len = (Off_t)POPi;
8c99d73e
GS		 2311#endif
2312 /* Checking for length < 0 is problematic as the type might or
301e8125 2313 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 2314 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2315 SETERRNO(0,0);
d05c1ba0 2316 {
5e0adc2d 2317 SV * const sv = POPs;
d05c1ba0
JH		 2318 int result = 1;
2319 GV *tmpgv;
090bf15b
SR		 2320 IO *io;
2321
42409c40
FC		 2322 if (PL_op->op_flags & OPf_SPECIAL
2323 ? (tmpgv = gv_fetchsv(sv, 0, SVt_PVIO), 1)
2324 : !!(tmpgv = MAYBE_DEREF_GV(sv)) ) {
9c9f25b8
NC		 2325 io = GvIO(tmpgv);
2326 if (!io)
090bf15b 2327 result = 0;
d05c1ba0 2328 else {
090bf15b 2329 PerlIO *fp;
090bf15b
SR		 2330 do_ftruncate_io:
2331 TAINT_PROPER("truncate");
2332 if (!(fp = IoIFP(io))) {
2333 result = 0;
2334 }
2335 else {
375ed12a
JH		 2336 int fd = PerlIO_fileno(fp);
2337 if (fd < 0) {
2338 SETERRNO(EBADF,RMS_IFI);
2339 result = 0;
2340 } else {
a9f17b43
JH		 2341 if (len < 0) {
2342 SETERRNO(EINVAL, LIB_INVARG);
2343 result = 0;
2344 } else {
2345 PerlIO_flush(fp);
cbdc8872 2346#ifdef HAS_TRUNCATE
a9f17b43 2347 if (ftruncate(fd, len) < 0)
301e8125 2348#else
a9f17b43 2349 if (my_chsize(fd, len) < 0)
cbdc8872 2350#endif
a9f17b43
JH		 2351 result = 0;
2352 }
375ed12a 2353 }
090bf15b 2354 }
d05c1ba0 2355 }
cbdc8872 2356 }
5e0adc2d 2357 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2358 io = MUTABLE_IO(SvRV(sv)); /* *main::FRED{IO} for example */
090bf15b 2359 goto do_ftruncate_io;
5e0adc2d
FC		 2360 }
2361 else {
2362 const char * const name = SvPV_nomg_const_nolen(sv);
d05c1ba0 2363 TAINT_PROPER("truncate");
cbdc8872 2364#ifdef HAS_TRUNCATE
d05c1ba0
JH		 2365 if (truncate(name, len) < 0)
2366 result = 0;
cbdc8872 2367#else
d05c1ba0 2368 {
d484df69
TC		 2369 int mode = O_RDWR;
2370 int tmpfd;
2371
2372#if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE)
2373 mode |= O_LARGEFILE; /* Transparently largefiley. */
2374#endif
2375#ifdef O_BINARY
2376 /* On open(), the Win32 CRT tries to seek around text
2377 * files using 32-bit offsets, which causes the open()
2378 * to fail on large files, so open in binary mode.
2379 */
2380 mode |= O_BINARY;
2381#endif
2382 tmpfd = PerlLIO_open(name, mode);
d05c1ba0 2383
375ed12a 2384 if (tmpfd < 0) {
cbdc8872 2385 result = 0;
375ed12a 2386 } else {
d05c1ba0
JH		 2387 if (my_chsize(tmpfd, len) < 0)
2388 result = 0;
2389 PerlLIO_close(tmpfd);
2390 }
cbdc8872 2391 }
a0d0e21e 2392#endif
d05c1ba0 2393 }
a0d0e21e 2394
d05c1ba0
JH		 2395 if (result)
2396 RETPUSHYES;
2397 if (!errno)
93189314 2398 SETERRNO(EBADF,RMS_IFI);
d05c1ba0
JH		 2399 RETPUSHUNDEF;
2400 }
a0d0e21e
LW		 2401}
2402
b1c05ba5
DM		 2403
2404/* also used for: pp_fcntl() */
2405
a0d0e21e
LW		 2406PP(pp_ioctl)
2407{
20b7effb 2408 dSP; dTARGET;
7452cf6a 2409 SV * const argsv = POPs;
1df70142 2410 const unsigned int func = POPu;
49225470 2411 int optype;
159b6efe 2412 GV * const gv = MUTABLE_GV(POPs);
8a6c0fcb 2413 IO * const io = GvIOn(gv);
a0d0e21e 2414 char *s;
324aa91a 2415 IV retval;
a0d0e21e 2416
8a6c0fcb 2417 if (!IoIFP(io)) {
51087808 2418 report_evil_fh(gv);
93189314 2419 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
a0d0e21e
LW		 2420 RETPUSHUNDEF;
2421 }
2422
748a9306 2423 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2424 STRLEN len;
324aa91a 2425 STRLEN need;
748a9306 2426 s = SvPV_force(argsv, len);
324aa91a
HF		 2427 need = IOCPARM_LEN(func);
2428 if (len < need) {
2429 s = Sv_Grow(argsv, need + 1);
2430 SvCUR_set(argsv, need);
a0d0e21e
LW		 2431 }
2432
748a9306 2433 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW		 2434 }
2435 else {
748a9306 2436 retval = SvIV(argsv);
c529f79d 2437 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW		 2438 }
2439
49225470 2440 optype = PL_op->op_type;
ed4b2e6b 2441 TAINT_PROPER(PL_op_desc[optype]);
a0d0e21e
LW		 2442
2443 if (optype == OP_IOCTL)
2444#ifdef HAS_IOCTL
76e3520e 2445 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2446#else
cea2e8a9 2447 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW		 2448#endif
2449 else
c214f4ad
WB		 2450#ifndef HAS_FCNTL
2451 DIE(aTHX_ "fcntl is not implemented");
8d698507 2452#elif defined(OS2) && defined(__EMX__)
760ac839 2453 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2454#else
760ac839 2455 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2456#endif
a0d0e21e 2457
6652bd42 2458#if defined(HAS_IOCTL) || defined(HAS_FCNTL)
748a9306
LW		 2459 if (SvPOK(argsv)) {
2460 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2461 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
53e06cf0 2462 OP_NAME(PL_op));
748a9306
LW		 2463 s[SvCUR(argsv)] = 0; /* put our null back */
2464 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW		 2465 }
2466
2467 if (retval == -1)
2468 RETPUSHUNDEF;
2469 if (retval != 0) {
2470 PUSHi(retval);
2471 }
2472 else {
8903cb82 2473 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e 2474 }
4808266b 2475#endif
c214f4ad 2476 RETURN;
a0d0e21e
LW		 2477}
2478
2479PP(pp_flock)
2480{
9cad6237 2481#ifdef FLOCK
20b7effb 2482 dSP; dTARGET;
a0d0e21e 2483 I32 value;
7452cf6a 2484 const int argtype = POPi;
1f28cbca 2485 GV * const gv = MUTABLE_GV(POPs);
9c9f25b8
NC		 2486 IO *const io = GvIO(gv);
2487 PerlIO *const fp = io ? IoIFP(io) : NULL;
16d20bd9 2488
0bcc34c2 2489 /* XXX Looks to me like io is always NULL at this point */
a0d0e21e 2490 if (fp) {
68dc0745 2491 (void)PerlIO_flush(fp);
76e3520e 2492 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2493 }
cb50131a 2494 else {
51087808 2495 report_evil_fh(gv);
a0d0e21e 2496 value = 0;
93189314 2497 SETERRNO(EBADF,RMS_IFI);
cb50131a 2498 }
a0d0e21e
LW		 2499 PUSHi(value);
2500 RETURN;
2501#else
56a94ef2 2502 DIE(aTHX_ PL_no_func, "flock");
a0d0e21e
LW		 2503#endif
2504}
2505
2506/* Sockets. */
2507
7627e6d0
NC		 2508#ifdef HAS_SOCKET
2509
a0d0e21e
LW		 2510PP(pp_socket)
2511{
20b7effb 2512 dSP;
7452cf6a
AL		 2513 const int protocol = POPi;
2514 const int type = POPi;
2515 const int domain = POPi;
159b6efe 2516 GV * const gv = MUTABLE_GV(POPs);
5805b585 2517 IO * const io = GvIOn(gv);
a0d0e21e
LW		 2518 int fd;
2519
57171420
BS		 2520 if (IoIFP(io))
2521 do_close(gv, FALSE);
2522
a0d0e21e 2523 TAINT_PROPER("socket");
6ad3d225 2524 fd = PerlSock_socket(domain, type, protocol);
375ed12a 2525 if (fd < 0) {
a0d0e21e 2526 RETPUSHUNDEF;
375ed12a 2527 }
147e3846
KW		 2528 IoIFP(io) = PerlIO_fdopen(fd, "r" SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2529 IoOFP(io) = PerlIO_fdopen(fd, "w" SOCKET_OPEN_MODE);
50952442 2530 IoTYPE(io) = IoTYPE_SOCKET;
a0d0e21e 2531 if (!IoIFP(io) || !IoOFP(io)) {
760ac839
LW		 2532 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2533 if (IoOFP(io)) PerlIO_close(IoOFP(io));
6ad3d225 2534 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
a0d0e21e
LW		 2535 RETPUSHUNDEF;
2536 }
131d45a9
JH		 2537#if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
2538 /* ensure close-on-exec */
2539 if (fd > PL_maxsysfd && fcntl(fd, F_SETFD, FD_CLOEXEC) < 0)
375ed12a 2540 RETPUSHUNDEF;
8d2a6795 2541#endif
a0d0e21e
LW		 2542
2543 RETPUSHYES;
a0d0e21e 2544}
7627e6d0 2545#endif
a0d0e21e
LW		 2546
2547PP(pp_sockpair)
2548{
c95c94b1 2549#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
20b7effb 2550 dSP;
e0b7b5e2 2551 int fd[2];
7452cf6a
AL		 2552 const int protocol = POPi;
2553 const int type = POPi;
2554 const int domain = POPi;
e0b7b5e2 2555
159b6efe 2556 GV * const gv2 = MUTABLE_GV(POPs);
49561e08
FC		 2557 IO * const io2 = GvIOn(gv2);
2558 GV * const gv1 = MUTABLE_GV(POPs);
2559 IO * const io1 = GvIOn(gv1);
a0d0e21e 2560
49561e08 2561 if (IoIFP(io1))
dc0d0a5f 2562 do_close(gv1, FALSE);
49561e08 2563 if (IoIFP(io2))
dc0d0a5f 2564 do_close(gv2, FALSE);
57171420 2565
a0d0e21e 2566 TAINT_PROPER("socketpair");
6ad3d225 2567 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
a0d0e21e 2568 RETPUSHUNDEF;
147e3846
KW		 2569 IoIFP(io1) = PerlIO_fdopen(fd[0], "r" SOCKET_OPEN_MODE);
2570 IoOFP(io1) = PerlIO_fdopen(fd[0], "w" SOCKET_OPEN_MODE);
50952442 2571 IoTYPE(io1) = IoTYPE_SOCKET;
147e3846
KW		 2572 IoIFP(io2) = PerlIO_fdopen(fd[1], "r" SOCKET_OPEN_MODE);
2573 IoOFP(io2) = PerlIO_fdopen(fd[1], "w" SOCKET_OPEN_MODE);
50952442 2574 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2575 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW		 2576 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2577 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2578 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW		 2579 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2580 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2581 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW		 2582 RETPUSHUNDEF;
2583 }
131d45a9 2584#if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
375ed12a 2585 /* ensure close-on-exec */
131d45a9
JH		 2586 if ((fd[0] > PL_maxsysfd && fcntl(fd[0], F_SETFD, FD_CLOEXEC) < 0) ||
2587 (fd[1] > PL_maxsysfd && fcntl(fd[1], F_SETFD, FD_CLOEXEC) < 0))
375ed12a 2588 RETPUSHUNDEF;
8d2a6795 2589#endif
a0d0e21e
LW		 2590
2591 RETPUSHYES;
2592#else
cea2e8a9 2593 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW		 2594#endif
2595}
2596
7627e6d0
NC		 2597#ifdef HAS_SOCKET
2598
b1c05ba5
DM		 2599/* also used for: pp_connect() */
2600
a0d0e21e
LW		 2601PP(pp_bind)
2602{
20b7effb 2603 dSP;
7452cf6a 2604 SV * const addrsv = POPs;
349d4f2f
NC		 2605 /* OK, so on what platform does bind modify addr? */
2606 const char *addr;
159b6efe 2607 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2608 IO * const io = GvIOn(gv);
a0d0e21e 2609 STRLEN len;
e0b7b5e2 2610 int op_type;
375ed12a 2611 int fd;
a0d0e21e 2612
8a6c0fcb 2613 if (!IoIFP(io))
a0d0e21e 2614 goto nuts;
375ed12a
JH		 2615 fd = PerlIO_fileno(IoIFP(io));
2616 if (fd < 0)
2617 goto nuts;
a0d0e21e 2618
349d4f2f 2619 addr = SvPV_const(addrsv, len);
e0b7b5e2 2620 op_type = PL_op->op_type;
32b81f04
NC		 2621 TAINT_PROPER(PL_op_desc[op_type]);
2622 if ((op_type == OP_BIND
375ed12a
JH		 2623 ? PerlSock_bind(fd, (struct sockaddr *)addr, len)
2624 : PerlSock_connect(fd, (struct sockaddr *)addr, len))
32b81f04 2625 >= 0)
a0d0e21e
LW		 2626 RETPUSHYES;
2627 else
2628 RETPUSHUNDEF;
2629
7b52d656 2630 nuts:
fbcda526 2631 report_evil_fh(gv);
93189314 2632 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2633 RETPUSHUNDEF;
a0d0e21e
LW		 2634}
2635
2636PP(pp_listen)
2637{
20b7effb 2638 dSP;
7452cf6a 2639 const int backlog = POPi;
159b6efe 2640 GV * const gv = MUTABLE_GV(POPs);
8a6c0fcb 2641 IO * const io = GvIOn(gv);
a0d0e21e 2642
8a6c0fcb 2643 if (!IoIFP(io))
a0d0e21e
LW		 2644 goto nuts;
2645
6ad3d225 2646 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW		 2647 RETPUSHYES;
2648 else
2649 RETPUSHUNDEF;
2650
7b52d656 2651 nuts:
fbcda526 2652 report_evil_fh(gv);
93189314 2653 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2654 RETPUSHUNDEF;
a0d0e21e
LW		 2655}
2656
2657PP(pp_accept)
2658{
20b7effb 2659 dSP; dTARGET;
eb578fdb 2660 IO *nstio;
93d47a36 2661 char namebuf[MAXPATHLEN];
b5afd346 2662#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
93d47a36
JH		 2663 Sock_size_t len = sizeof (struct sockaddr_in);
2664#else
2665 Sock_size_t len = sizeof namebuf;
2666#endif
159b6efe
NC		 2667 GV * const ggv = MUTABLE_GV(POPs);
2668 GV * const ngv = MUTABLE_GV(POPs);
a0d0e21e
LW		 2669 int fd;
2670
8a6c0fcb 2671 IO * const gstio = GvIO(ggv);
a0d0e21e
LW		 2672 if (!gstio || !IoIFP(gstio))
2673 goto nuts;
2674
2675 nstio = GvIOn(ngv);
93d47a36 2676 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
e294cc5d
JH		 2677#if defined(OEMVS)
2678 if (len == 0) {
2679 /* Some platforms indicate zero length when an AF_UNIX client is
2680 * not bound. Simulate a non-zero-length sockaddr structure in
2681 * this case. */
2682 namebuf[0] = 0; /* sun_len */
2683 namebuf[1] = AF_UNIX; /* sun_family */
2684 len = 2;
2685 }
2686#endif
2687
a0d0e21e
LW		 2688 if (fd < 0)
2689 goto badexit;
a70048fb
AB		 2690 if (IoIFP(nstio))
2691 do_close(ngv, FALSE);
147e3846
KW		 2692 IoIFP(nstio) = PerlIO_fdopen(fd, "r" SOCKET_OPEN_MODE);
2693 IoOFP(nstio) = PerlIO_fdopen(fd, "w" SOCKET_OPEN_MODE);
50952442 2694 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2695 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW		 2696 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2697 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2698 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW		 2699 goto badexit;
2700 }
131d45a9
JH		 2701#if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
2702 /* ensure close-on-exec */
2703 if (fd > PL_maxsysfd && fcntl(fd, F_SETFD, FD_CLOEXEC) < 0)
375ed12a 2704 goto badexit;
8d2a6795 2705#endif
a0d0e21e 2706
381c1bae 2707#ifdef __SCO_VERSION__
93d47a36 2708 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
381c1bae 2709#endif
ed79a026 2710
93d47a36 2711 PUSHp(namebuf, len);
a0d0e21e
LW		 2712 RETURN;
2713
7b52d656 2714 nuts:
fbcda526 2715 report_evil_fh(ggv);
93189314 2716 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2717
7b52d656 2718 badexit:
a0d0e21e
LW		 2719 RETPUSHUNDEF;
2720
a0d0e21e
LW		 2721}
2722
2723PP(pp_shutdown)
2724{
20b7effb 2725 dSP; dTARGET;
7452cf6a 2726 const int how = POPi;
159b6efe 2727 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2728 IO * const io = GvIOn(gv);
a0d0e21e 2729
8a6c0fcb 2730 if (!IoIFP(io))
a0d0e21e
LW		 2731 goto nuts;
2732
6ad3d225 2733 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW		 2734 RETURN;
2735
7b52d656 2736 nuts:
fbcda526 2737 report_evil_fh(gv);
93189314 2738 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2739 RETPUSHUNDEF;
a0d0e21e
LW		 2740}
2741
b1c05ba5
DM		 2742
2743/* also used for: pp_gsockopt() */
2744
a0d0e21e
LW		 2745PP(pp_ssockopt)
2746{
20b7effb 2747 dSP;
7452cf6a 2748 const int optype = PL_op->op_type;
561b68a9 2749 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
7452cf6a
AL		 2750 const unsigned int optname = (unsigned int) POPi;
2751 const unsigned int lvl = (unsigned int) POPi;
159b6efe 2752 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2753 IO * const io = GvIOn(gv);
a0d0e21e 2754 int fd;
1e422769 2755 Sock_size_t len;
a0d0e21e 2756
49225470 2757 if (!IoIFP(io))
a0d0e21e
LW		 2758 goto nuts;
2759
760ac839 2760 fd = PerlIO_fileno(IoIFP(io));
375ed12a
JH		 2761 if (fd < 0)
2762 goto nuts;
a0d0e21e
LW		 2763 switch (optype) {
2764 case OP_GSOCKOPT:
748a9306 2765 SvGROW(sv, 257);
a0d0e21e 2766 (void)SvPOK_only(sv);
748a9306
LW		 2767 SvCUR_set(sv,256);
2768 *SvEND(sv) ='\0';
1e422769 2769 len = SvCUR(sv);
6ad3d225 2770 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2771 goto nuts2;
ee2276e5
JH		 2772#if defined(_AIX)
2773 /* XXX Configure test: does getsockopt set the length properly? */
2774 if (len == 256)
2775 len = sizeof(int);
2776#endif
1e422769 2777 SvCUR_set(sv, len);
748a9306 2778 *SvEND(sv) ='\0';
a0d0e21e
LW		 2779 PUSHs(sv);
2780 break;
2781 case OP_SSOCKOPT: {
1215b447
JH		 2782#if defined(__SYMBIAN32__)
2783# define SETSOCKOPT_OPTION_VALUE_T void *
2784#else
2785# define SETSOCKOPT_OPTION_VALUE_T const char *
2786#endif
2787 /* XXX TODO: We need to have a proper type (a Configure probe,
2788 * etc.) for what the C headers think of the third argument of
2789 * setsockopt(), the option_value read-only buffer: is it
2790 * a "char *", or a "void *", const or not. Some compilers
2791 * don't take kindly to e.g. assuming that "char *" implicitly
2792 * promotes to a "void *", or to explicitly promoting/demoting
2793 * consts to non/vice versa. The "const void *" is the SUS
2794 * definition, but that does not fly everywhere for the above
2795 * reasons. */
2796 SETSOCKOPT_OPTION_VALUE_T buf;
1e422769 2797 int aint;
2798 if (SvPOKp(sv)) {
2d8e6c8d 2799 STRLEN l;
1215b447 2800 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2d8e6c8d 2801 len = l;
1e422769 2802 }
56ee1660 2803 else {
a0d0e21e 2804 aint = (int)SvIV(sv);
1215b447 2805 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
a0d0e21e
LW		 2806 len = sizeof(int);
2807 }
6ad3d225 2808 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2809 goto nuts2;
3280af22 2810 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 2811 }
2812 break;
2813 }
2814 RETURN;
2815
7b52d656 2816 nuts:
fbcda526 2817 report_evil_fh(gv);
93189314 2818 SETERRNO(EBADF,SS_IVCHAN);
7b52d656 2819 nuts2:
a0d0e21e
LW		 2820 RETPUSHUNDEF;
2821
a0d0e21e
LW		 2822}
2823
b1c05ba5
DM		 2824
2825/* also used for: pp_getsockname() */
2826
a0d0e21e
LW		 2827PP(pp_getpeername)
2828{
20b7effb 2829 dSP;
7452cf6a 2830 const int optype = PL_op->op_type;
159b6efe 2831 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2832 IO * const io = GvIOn(gv);
7452cf6a 2833 Sock_size_t len;
a0d0e21e
LW		 2834 SV *sv;
2835 int fd;
a0d0e21e 2836
49225470 2837 if (!IoIFP(io))
a0d0e21e
LW		 2838 goto nuts;
2839
561b68a9 2840 sv = sv_2mortal(newSV(257));
748a9306 2841 (void)SvPOK_only(sv);
1e422769 2842 len = 256;
2843 SvCUR_set(sv, len);
748a9306 2844 *SvEND(sv) ='\0';
760ac839 2845 fd = PerlIO_fileno(IoIFP(io));
375ed12a
JH		 2846 if (fd < 0)
2847 goto nuts;
a0d0e21e
LW		 2848 switch (optype) {
2849 case OP_GETSOCKNAME:
6ad3d225 2850 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW		 2851 goto nuts2;
2852 break;
2853 case OP_GETPEERNAME:
6ad3d225 2854 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2855 goto nuts2;
490ab354
JH		 2856#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2857 {
2858 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";
2859 /* If the call succeeded, make sure we don't have a zeroed port/addr */
349d4f2f 2860 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2fbb330f 2861 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
490ab354 2862 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2863 goto nuts2;
490ab354
JH		 2864 }
2865 }
2866#endif
a0d0e21e
LW		 2867 break;
2868 }
13826f2c
CS		 2869#ifdef BOGUS_GETNAME_RETURN
2870 /* Interactive Unix, getpeername() and getsockname()
2871 does not return valid namelen */
1e422769 2872 if (len == BOGUS_GETNAME_RETURN)
2873 len = sizeof(struct sockaddr);
13826f2c 2874#endif
1e422769 2875 SvCUR_set(sv, len);
748a9306 2876 *SvEND(sv) ='\0';
a0d0e21e
LW		 2877 PUSHs(sv);
2878 RETURN;
2879
7b52d656 2880 nuts:
fbcda526 2881 report_evil_fh(gv);
93189314 2882 SETERRNO(EBADF,SS_IVCHAN);
7b52d656 2883 nuts2:
a0d0e21e 2884 RETPUSHUNDEF;
7627e6d0 2885}
a0d0e21e 2886
a0d0e21e 2887#endif
a0d0e21e
LW		 2888
2889/* Stat calls. */
2890
b1c05ba5
DM		 2891/* also used for: pp_lstat() */
2892
a0d0e21e
LW		 2893PP(pp_stat)
2894{
39644a26 2895 dSP;
10edeb5d 2896 GV *gv = NULL;
55dd8d50 2897 IO *io = NULL;
1c23e2bd 2898 U8 gimme;
a0d0e21e 2899 I32 max = 13;
109c43ed 2900 SV* sv;
a0d0e21e 2901
109c43ed
FC		 2902 if (PL_op->op_flags & OPf_REF ? (gv = cGVOP_gv, 1)
2903 : !!(sv=POPs, gv = MAYBE_DEREF_GV(sv))) {
8a4e5b40 2904 if (PL_op->op_type == OP_LSTAT) {
5d3e98de 2905 if (gv != PL_defgv) {
5d329e6e 2906 do_fstat_warning_check:
a2a5de95 2907 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
147e3846 2908 "lstat() on filehandle%s%" SVf,
93fad930
FC		 2909 gv ? " " : "",
2910 SVfARG(gv
bf29d05f
BF		 2911 ? sv_2mortal(newSVhek(GvENAME_HEK(gv)))
2912 : &PL_sv_no));
5d3e98de 2913 } else if (PL_laststype != OP_LSTAT)
b042df57 2914 /* diag_listed_as: The stat preceding %s wasn't an lstat */
8a4e5b40 2915 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
8a4e5b40
DD		 2916 }
2917
97c8f3e6
Z		 2918 if (gv == PL_defgv) {
2919 if (PL_laststatval < 0)
2920 SETERRNO(EBADF,RMS_IFI);
2921 } else {
0d5064f1 2922 do_fstat_have_io:
3280af22 2923 PL_laststype = OP_STAT;
0d5064f1 2924 PL_statgv = gv ? gv : (GV *)io;
60e13354 2925 SvPVCLEAR(PL_statname);
5228a96c 2926 if(gv) {
ad02613c 2927 io = GvIO(gv);
0d5064f1
FC		 2928 }
2929 if (io) {
5228a96c 2930 if (IoIFP(io)) {
375ed12a
JH		 2931 int fd = PerlIO_fileno(IoIFP(io));
2932 if (fd < 0) {
97c8f3e6 2933 report_evil_fh(gv);
375ed12a
JH		 2934 PL_laststatval = -1;
2935 SETERRNO(EBADF,RMS_IFI);
2936 } else {
2937 PL_laststatval = PerlLIO_fstat(fd, &PL_statcache);
375ed12a 2938 }
5228a96c 2939 } else if (IoDIRP(io)) {
5228a96c 2940 PL_laststatval =
3497a01f 2941 PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache);
5228a96c 2942 } else {
97c8f3e6 2943 report_evil_fh(gv);
5228a96c 2944 PL_laststatval = -1;
97c8f3e6 2945 SETERRNO(EBADF,RMS_IFI);
5228a96c 2946 }
97c8f3e6
Z		 2947 } else {
2948 report_evil_fh(gv);
2949 PL_laststatval = -1;
2950 SETERRNO(EBADF,RMS_IFI);
2951 }
5228a96c
SP		 2952 }
2953
9ddeeac9 2954 if (PL_laststatval < 0) {
a0d0e21e 2955 max = 0;
9ddeeac9 2956 }
a0d0e21e
LW		 2957 }
2958 else {
7cb3f959 2959 const char *file;
a155eb05
TC		 2960 const char *temp;
2961 STRLEN len;
109c43ed 2962 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2963 io = MUTABLE_IO(SvRV(sv));
ad02613c
SP		 2964 if (PL_op->op_type == OP_LSTAT)
2965 goto do_fstat_warning_check;
2966 goto do_fstat_have_io;
2967 }
4bac9ae4 2968 SvTAINTED_off(PL_statname); /* previous tainting irrelevant */
a155eb05
TC		 2969 temp = SvPV_nomg_const(sv, len);
2970 sv_setpv(PL_statname, temp);
a0714e2c 2971 PL_statgv = NULL;
533c011a 2972 PL_laststype = PL_op->op_type;
7cb3f959 2973 file = SvPV_nolen_const(PL_statname);
a155eb05
TC		 2974 if (!IS_SAFE_PATHNAME(temp, len, OP_NAME(PL_op))) {
2975 PL_laststatval = -1;
2976 }
2977 else if (PL_op->op_type == OP_LSTAT)
7cb3f959 2978 PL_laststatval = PerlLIO_lstat(file, &PL_statcache);
a0d0e21e 2979 else
7cb3f959 2980 PL_laststatval = PerlLIO_stat(file, &PL_statcache);
3280af22 2981 if (PL_laststatval < 0) {
7cb3f959 2982 if (ckWARN(WARN_NEWLINE) && should_warn_nl(file)) {
5d37acd6
DM		 2983 /* PL_warn_nl is constant */
2984 GCC_DIAG_IGNORE(-Wformat-nonliteral);
9014280d 2985 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
5d37acd6
DM		 2986 GCC_DIAG_RESTORE;
2987 }
a0d0e21e
LW		 2988 max = 0;
2989 }
2990 }
2991
54310121 2992 gimme = GIMME_V;
2993 if (gimme != G_ARRAY) {
2994 if (gimme != G_VOID)
2995 XPUSHs(boolSV(max));
2996 RETURN;
a0d0e21e
LW		 2997 }
2998 if (max) {
36477c24 2999 EXTEND(SP, max);
3000 EXTEND_MORTAL(max);
6e449a3a 3001 mPUSHi(PL_statcache.st_dev);
2e8ea15a
Z		 3002 {
3003 /*
3004 * We try to represent st_ino as a native IV or UV where
3005 * possible, but fall back to a decimal string where
3006 * necessary. The code to generate these decimal strings
3007 * is quite obtuse, because (a) we're portable to non-POSIX
3008 * platforms where st_ino might be signed; (b) we didn't
3009 * necessarily detect at Configure time whether st_ino is
3010 * signed; (c) we're portable to non-POSIX platforms where
3011 * ino_t isn't defined, so have no name for the type of
3012 * st_ino; and (d) sprintf() doesn't necessarily support
3013 * integers as large as st_ino.
3014 */
009165e9 3015 bool neg;
2e8ea15a 3016 Stat_t s;
b8897079 3017 CLANG_DIAG_IGNORE(-Wtautological-compare);
2e8ea15a 3018 GCC_DIAG_IGNORE(-Wtype-limits);
009165e9 3019 neg = PL_statcache.st_ino < 0;
2e8ea15a 3020 GCC_DIAG_RESTORE;
b8897079 3021 CLANG_DIAG_RESTORE;
009165e9 3022 if (neg) {
2e8ea15a
Z		 3023 s.st_ino = (IV)PL_statcache.st_ino;
3024 if (LIKELY(s.st_ino == PL_statcache.st_ino)) {
3025 mPUSHi(s.st_ino);
3026 } else {
3027 char buf[sizeof(s.st_ino)*3+1], *p;
3028 s.st_ino = PL_statcache.st_ino;
3029 for (p = buf + sizeof(buf); p != buf+1; ) {
3030 Stat_t t;
3031 t.st_ino = s.st_ino / 10;
3032 *--p = '0' + (int)(t.st_ino*10 - s.st_ino);
3033 s.st_ino = t.st_ino;
3034 }
3035 while (*p == '0')
3036 p++;
3037 *--p = '-';
3038 mPUSHp(p, buf+sizeof(buf) - p);
3039 }
009165e9 3040 } else {
2e8ea15a
Z		 3041 s.st_ino = (UV)PL_statcache.st_ino;
3042 if (LIKELY(s.st_ino == PL_statcache.st_ino)) {
3043 mPUSHu(s.st_ino);
3044 } else {
3045 char buf[sizeof(s.st_ino)*3], *p;
3046 s.st_ino = PL_statcache.st_ino;
3047 for (p = buf + sizeof(buf); p != buf; ) {
3048 Stat_t t;
3049 t.st_ino = s.st_ino / 10;
3050 *--p = '0' + (int)(s.st_ino - t.st_ino*10);
3051 s.st_ino = t.st_ino;
3052 }
3053 while (*p == '0')
3054 p++;
3055 mPUSHp(p, buf+sizeof(buf) - p);
3056 }
3057 }
3058 }
6e449a3a
MHM		 3059 mPUSHu(PL_statcache.st_mode);
3060 mPUSHu(PL_statcache.st_nlink);
dfff4baf
BF		 3061
3062 sv_setuid(PUSHmortal, PL_statcache.st_uid);
3063 sv_setgid(PUSHmortal, PL_statcache.st_gid);
3064
cbdc8872 3065#ifdef USE_STAT_RDEV
6e449a3a 3066 mPUSHi(PL_statcache.st_rdev);
cbdc8872 3067#else
84bafc02 3068 PUSHs(newSVpvs_flags("", SVs_TEMP));
cbdc8872 3069#endif
146174a9 3070#if Off_t_size > IVSIZE
6e449a3a 3071 mPUSHn(PL_statcache.st_size);
146174a9 3072#else
6e449a3a 3073 mPUSHi(PL_statcache.st_size);
146174a9 3074#endif
cbdc8872 3075#ifdef BIG_TIME
6e449a3a
MHM		 3076 mPUSHn(PL_statcache.st_atime);
3077 mPUSHn(PL_statcache.st_mtime);
3078 mPUSHn(PL_statcache.st_ctime);
cbdc8872 3079#else
6e449a3a
MHM		 3080 mPUSHi(PL_statcache.st_atime);
3081 mPUSHi(PL_statcache.st_mtime);
3082 mPUSHi(PL_statcache.st_ctime);
cbdc8872 3083#endif
a0d0e21e 3084#ifdef USE_STAT_BLOCKS
6e449a3a
MHM		 3085 mPUSHu(PL_statcache.st_blksize);
3086 mPUSHu(PL_statcache.st_blocks);
a0d0e21e 3087#else
84bafc02
NC		 3088 PUSHs(newSVpvs_flags("", SVs_TEMP));
3089 PUSHs(newSVpvs_flags("", SVs_TEMP));
a0d0e21e
LW		 3090#endif
3091 }
3092 RETURN;
3093}
3094
6c48f025
NC		 3095/* All filetest ops avoid manipulating the perl stack pointer in their main
3096 bodies (since commit d2c4d2d1e22d3125), and return using either
3097 S_ft_return_false() or S_ft_return_true(). These two helper functions are
3098 the only two which manipulate the perl stack. To ensure that no stack
3099 manipulation macros are used, the filetest ops avoid defining a local copy
3100 of the stack pointer with dSP. */
3101
8db8f6b6
FC		 3102/* If the next filetest is stacked up with this one
3103 (PL_op->op_private & OPpFT_STACKING), we leave
3104 the original argument on the stack for success,
3105 and skip the stacked operators on failure.
3106 The next few macros/functions take care of this.
3107*/
3108
3109static OP *
9a6b02e8 3110S_ft_return_false(pTHX_ SV *ret) {
8db8f6b6 3111 OP *next = NORMAL;
697f9d37
NC		 3112 dSP;
3113
226b9201 3114 if (PL_op->op_flags & OPf_REF) XPUSHs(ret);
8db8f6b6
FC		 3115 else SETs(ret);
3116 PUTBACK;
697f9d37 3117
9a6b02e8 3118 if (PL_op->op_private & OPpFT_STACKING) {
1af91490 3119 while (next && OP_IS_FILETEST(next->op_type)
9a6b02e8
NC		 3120 && next->op_private & OPpFT_STACKED)
3121 next = next->op_next;
3122 }
8db8f6b6
FC		 3123 return next;
3124}
3125
07ed4d4b
NC		 3126PERL_STATIC_INLINE OP *
3127S_ft_return_true(pTHX_ SV *ret) {
3128 dSP;
3129 if (PL_op->op_flags & OPf_REF)
3130 XPUSHs(PL_op->op_private & OPpFT_STACKING ? (SV *)cGVOP_gv : (ret));
3131 else if (!(PL_op->op_private & OPpFT_STACKING))
3132 SETs(ret);
3133 PUTBACK;
3134 return NORMAL;
3135}
8db8f6b6 3136
48d023d6
NC		 3137#define FT_RETURNNO return S_ft_return_false(aTHX_ &PL_sv_no)
3138#define FT_RETURNUNDEF return S_ft_return_false(aTHX_ &PL_sv_undef)
3139#define FT_RETURNYES return S_ft_return_true(aTHX_ &PL_sv_yes)
8db8f6b6 3140
6f1401dc 3141#define tryAMAGICftest_MG(chr) STMT_START { \
d2f67720 3142 if ( (SvFLAGS(*PL_stack_sp) & (SVf_ROK|SVs_GMG)) \
8db8f6b6
FC		 3143 && PL_op->op_flags & OPf_KIDS) { \
3144 OP *next = S_try_amagic_ftest(aTHX_ chr); \
3145 if (next) return next; \
3146 } \
6f1401dc
DM		 3147 } STMT_END
3148
8db8f6b6 3149STATIC OP *
6f1401dc 3150S_try_amagic_ftest(pTHX_ char chr) {
d2f67720 3151 SV *const arg = *PL_stack_sp;
6f1401dc
DM		 3152
3153 assert(chr != '?');
c5780028 3154 if (!(PL_op->op_private & OPpFT_STACKING)) SvGETMAGIC(arg);
6f1401dc 3155
d2f67720 3156 if (SvAMAGIC(arg))
6f1401dc
DM		 3157 {
3158 const char tmpchr = chr;
6f1401dc
DM		 3159 SV * const tmpsv = amagic_call(arg,
3160 newSVpvn_flags(&tmpchr, 1, SVs_TEMP),
3161 ftest_amg, AMGf_unary);
3162
3163 if (!tmpsv)
8db8f6b6 3164 return NULL;
6f1401dc 3165
48d023d6
NC		 3166 return SvTRUE(tmpsv)
3167 ? S_ft_return_true(aTHX_ tmpsv) : S_ft_return_false(aTHX_ tmpsv);
6f1401dc 3168 }
8db8f6b6 3169 return NULL;
6f1401dc
DM		 3170}
3171
3172
b1c05ba5
DM		 3173/* also used for: pp_fteexec() pp_fteread() pp_ftewrite() pp_ftrexec()
3174 * pp_ftrwrite() */
3175
a0d0e21e
LW		 3176PP(pp_ftrread)
3177{
9cad6237 3178 I32 result;
af9e49b4 3179 /* Not const, because things tweak this below. Not bool, because there's
f3574cc6 3180 no guarantee that OPpFT_ACCESS is <= CHAR_MAX */
af9e49b4
NC		 3181#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
3182 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
3183 /* Giving some sort of initial value silences compilers. */
3184# ifdef R_OK
3185 int access_mode = R_OK;
3186# else
3187 int access_mode = 0;
3188# endif
5ff3f7a4 3189#else
af9e49b4
NC		 3190 /* access_mode is never used, but leaving use_access in makes the
3191 conditional compiling below much clearer. */
3192 I32 use_access = 0;
5ff3f7a4 3193#endif
2dcac756 3194 Mode_t stat_mode = S_IRUSR;
a0d0e21e 3195
af9e49b4 3196 bool effective = FALSE;
07fe7c6a 3197 char opchar = '?';
af9e49b4 3198
7fb13887
BM		 3199 switch (PL_op->op_type) {
3200 case OP_FTRREAD: opchar = 'R'; break;
3201 case OP_FTRWRITE: opchar = 'W'; break;
3202 case OP_FTREXEC: opchar = 'X'; break;
3203 case OP_FTEREAD: opchar = 'r'; break;
3204 case OP_FTEWRITE: opchar = 'w'; break;
3205 case OP_FTEEXEC: opchar = 'x'; break;
3206 }
6f1401dc 3207 tryAMAGICftest_MG(opchar);
7fb13887 3208
af9e49b4
NC		 3209 switch (PL_op->op_type) {
3210 case OP_FTRREAD:
3211#if !(defined(HAS_ACCESS) && defined(R_OK))
3212 use_access = 0;
3213#endif
3214 break;
3215
3216 case OP_FTRWRITE:
5ff3f7a4 3217#if defined(HAS_ACCESS) && defined(W_OK)
af9e49b4 3218 access_mode = W_OK;
5ff3f7a4 3219#else
af9e49b4 3220 use_access = 0;
5ff3f7a4 3221#endif
af9e49b4
NC		 3222 stat_mode = S_IWUSR;
3223 break;
a0d0e21e 3224
af9e49b4 3225 case OP_FTREXEC:
5ff3f7a4 3226#if defined(HAS_ACCESS) && defined(X_OK)
af9e49b4 3227 access_mode = X_OK;
5ff3f7a4 3228#else
af9e49b4 3229 use_access = 0;
5ff3f7a4 3230#endif
af9e49b4
NC		 3231 stat_mode = S_IXUSR;
3232 break;
a0d0e21e 3233
af9e49b4 3234 case OP_FTEWRITE:
faee0e31 3235#ifdef PERL_EFF_ACCESS
af9e49b4 3236 access_mode = W_OK;
5ff3f7a4 3237#endif
af9e49b4 3238 stat_mode = S_IWUSR;
924ba076 3239 /* FALLTHROUGH */
a0d0e21e 3240
af9e49b4
NC		 3241 case OP_FTEREAD:
3242#ifndef PERL_EFF_ACCESS
3243 use_access = 0;
3244#endif
3245 effective = TRUE;
3246 break;
3247
af9e49b4 3248 case OP_FTEEXEC:
faee0e31 3249#ifdef PERL_EFF_ACCESS
b376053d 3250 access_mode = X_OK;
5ff3f7a4 3251#else
af9e49b4 3252 use_access = 0;
5ff3f7a4 3253#endif
af9e49b4
NC		 3254 stat_mode = S_IXUSR;
3255 effective = TRUE;
3256 break;
3257 }
a0d0e21e 3258
af9e49b4
NC		 3259 if (use_access) {
3260#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
a155eb05
TC		 3261 STRLEN len;
3262 const char *name = SvPV(*PL_stack_sp, len);
3263 if (!IS_SAFE_PATHNAME(name, len, OP_NAME(PL_op))) {
3264 result = -1;
3265 }
3266 else if (effective) {
af9e49b4
NC		 3267# ifdef PERL_EFF_ACCESS
3268 result = PERL_EFF_ACCESS(name, access_mode);
3269# else
3270 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
3271 OP_NAME(PL_op));
3272# endif
3273 }
3274 else {
3275# ifdef HAS_ACCESS
3276 result = access(name, access_mode);
3277# else
3278 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
3279# endif
3280 }
5ff3f7a4 3281 if (result == 0)
d2c4d2d1 3282 FT_RETURNYES;
5ff3f7a4 3283 if (result < 0)
d2c4d2d1
FC		 3284 FT_RETURNUNDEF;
3285 FT_RETURNNO;
af9e49b4 3286#endif
22865c03 3287 }
af9e49b4 3288
40c852de 3289 result = my_stat_flags(0);
a0d0e21e 3290 if (result < 0)
8db8f6b6 3291 FT_RETURNUNDEF;
af9e49b4 3292 if (cando(stat_mode, effective, &PL_statcache))
8db8f6b6
FC		 3293 FT_RETURNYES;
3294 FT_RETURNNO;
a0d0e21e
LW		 3295}
3296
b1c05ba5
DM		 3297
3298/* also used for: pp_ftatime() pp_ftctime() pp_ftmtime() pp_ftsize() */
3299
a0d0e21e
LW		 3300PP(pp_ftis)
3301{
fbb0b3b3 3302 I32 result;
d7f0a2f4 3303 const int op_type = PL_op->op_type;
07fe7c6a 3304 char opchar = '?';
07fe7c6a
BM		 3305
3306 switch (op_type) {
3307 case OP_FTIS: opchar = 'e'; break;
3308 case OP_FTSIZE: opchar = 's'; break;
3309 case OP_FTMTIME: opchar = 'M'; break;
3310 case OP_FTCTIME: opchar = 'C'; break;
3311 case OP_FTATIME: opchar = 'A'; break;
3312 }
6f1401dc 3313 tryAMAGICftest_MG(opchar);
07fe7c6a 3314
40c852de 3315 result = my_stat_flags(0);
a0d0e21e 3316 if (result < 0)
8db8f6b6 3317 FT_RETURNUNDEF;
d7f0a2f4 3318 if (op_type == OP_FTIS)
8db8f6b6 3319 FT_RETURNYES;
957b0e1d 3320 {
d7f0a2f4
NC		 3321 /* You can't dTARGET inside OP_FTIS, because you'll get
3322 "panic: pad_sv po" - the op is not flagged to have a target. */
957b0e1d 3323 dTARGET;
d7f0a2f4 3324 switch (op_type) {
957b0e1d
NC		 3325 case OP_FTSIZE:
3326#if Off_t_size > IVSIZE
8db8f6b6 3327 sv_setnv(TARG, (NV)PL_statcache.st_size);
957b0e1d 3328#else
8db8f6b6 3329 sv_setiv(TARG, (IV)PL_statcache.st_size);
957b0e1d
NC		 3330#endif
3331 break;
3332 case OP_FTMTIME:
8db8f6b6
FC		 3333 sv_setnv(TARG,
3334 ((NV)PL_basetime - PL_statcache.st_mtime) / 86400.0 );
957b0e1d
NC		 3335 break;
3336 case OP_FTATIME:
8db8f6b6
FC		 3337 sv_setnv(TARG,
3338 ((NV)PL_basetime - PL_statcache.st_atime) / 86400.0 );
957b0e1d
NC		 3339 break;
3340 case OP_FTCTIME:
8db8f6b6
FC		 3341 sv_setnv(TARG,
3342 ((NV)PL_basetime - PL_statcache.st_ctime) / 86400.0 );
957b0e1d
NC		 3343 break;
3344 }
8db8f6b6 3345 SvSETMAGIC(TARG);
f4c975aa 3346 return SvTRUE_nomg_NN(TARG)
48d023d6 3347 ? S_ft_return_true(aTHX_ TARG) : S_ft_return_false(aTHX_ TARG);
957b0e1d 3348 }
a0d0e21e
LW		 3349}
3350
b1c05ba5
DM		 3351
3352/* also used for: pp_ftblk() pp_ftchr() pp_ftdir() pp_fteowned()
3353 * pp_ftfile() pp_ftpipe() pp_ftsgid() pp_ftsock()
3354 * pp_ftsuid() pp_ftsvtx() pp_ftzero() */
3355
a0d0e21e
LW		 3356PP(pp_ftrowned)
3357{
fbb0b3b3 3358 I32 result;
07fe7c6a 3359 char opchar = '?';
17ad201a 3360
7fb13887
BM		 3361 switch (PL_op->op_type) {
3362 case OP_FTROWNED: opchar = 'O'; break;
3363 case OP_FTEOWNED: opchar = 'o'; break;
3364 case OP_FTZERO: opchar = 'z'; break;
3365 case OP_FTSOCK: opchar = 'S'; break;
3366 case OP_FTCHR: opchar = 'c'; break;
3367 case OP_FTBLK: opchar = 'b'; break;
3368 case OP_FTFILE: opchar = 'f'; break;
3369 case OP_FTDIR: opchar = 'd'; break;
3370 case OP_FTPIPE: opchar = 'p'; break;
3371 case OP_FTSUID: opchar = 'u'; break;
3372 case OP_FTSGID: opchar = 'g'; break;
3373 case OP_FTSVTX: opchar = 'k'; break;
3374 }
6f1401dc 3375 tryAMAGICftest_MG(opchar);
7fb13887 3376
40c852de 3377 result = my_stat_flags(0);
a0d0e21e 3378 if (result < 0)
8db8f6b6 3379 FT_RETURNUNDEF;
f1cb2d48
NC		 3380 switch (PL_op->op_type) {
3381 case OP_FTROWNED:
985213f2 3382 if (PL_statcache.st_uid == PerlProc_getuid())
8db8f6b6 3383 FT_RETURNYES;
f1cb2d48
NC		 3384 break;
3385 case OP_FTEOWNED:
985213f2 3386 if (PL_statcache.st_uid == PerlProc_geteuid())
8db8f6b6 3387 FT_RETURNYES;
f1cb2d48
NC		 3388 break;
3389 case OP_FTZERO:
3390 if (PL_statcache.st_size == 0)
8db8f6b6 3391 FT_RETURNYES;
f1cb2d48
NC		 3392 break;
3393 case OP_FTSOCK:
3394 if (S_ISSOCK(PL_statcache.st_mode))
8db8f6b6 3395 FT_RETURNYES;
f1cb2d48
NC		 3396 break;
3397 case OP_FTCHR:
3398 if (S_ISCHR(PL_statcache.st_mode))
8db8f6b6 3399 FT_RETURNYES;
f1cb2d48
NC		 3400 break;
3401 case OP_FTBLK:
3402 if (S_ISBLK(PL_statcache.st_mode))
8db8f6b6 3403 FT_RETURNYES;
f1cb2d48
NC		 3404 break;
3405 case OP_FTFILE:
3406 if (S_ISREG(PL_statcache.st_mode))
8db8f6b6 3407 FT_RETURNYES;
f1cb2d48
NC		 3408 break;
3409 case OP_FTDIR:
3410 if (S_ISDIR(PL_statcache.st_mode))
8db8f6b6 3411 FT_RETURNYES;
f1cb2d48
NC		 3412 break;
3413 case OP_FTPIPE:
3414 if (S_ISFIFO(PL_statcache.st_mode))
8db8f6b6 3415 FT_RETURNYES;
f1cb2d48 3416 break;
a0d0e21e 3417#ifdef S_ISUID
17ad201a
NC		 3418 case OP_FTSUID:
3419 if (PL_statcache.st_mode & S_ISUID)
8db8f6b6 3420 FT_RETURNYES;
17ad201a 3421 break;
a0d0e21e 3422#endif
a0d0e21e 3423#ifdef S_ISGID
17ad201a
NC		 3424 case OP_FTSGID:
3425 if (PL_statcache.st_mode & S_ISGID)
8db8f6b6 3426 FT_RETURNYES;
17ad201a
NC		 3427 break;
3428#endif
3429#ifdef S_ISVTX
3430 case OP_FTSVTX:
3431 if (PL_statcache.st_mode & S_ISVTX)
8db8f6b6 3432 FT_RETURNYES;
17ad201a 3433 break;
a0d0e21e 3434#endif
17ad201a 3435 }
8db8f6b6 3436 FT_RETURNNO;
a0d0e21e
LW		 3437}
3438
17ad201a 3439PP(pp_ftlink)
a0d0e21e 3440{
500ff13f 3441 I32 result;
07fe7c6a 3442
6f1401dc 3443 tryAMAGICftest_MG('l');
40c852de 3444 result = my_lstat_flags(0);
500ff13f 3445
a0d0e21e 3446 if (result < 0)
8db8f6b6 3447 FT_RETURNUNDEF;
17ad201a 3448 if (S_ISLNK(PL_statcache.st_mode))
8db8f6b6
FC		 3449 FT_RETURNYES;
3450 FT_RETURNNO;
a0d0e21e
LW		 3451}
3452
3453PP(pp_fttty)
3454{
a0d0e21e
LW		 3455 int fd;
3456 GV *gv;
0784aae0 3457 char *name = NULL;
40c852de 3458 STRLEN namelen;
22ff3130 3459 UV uv;
fb73857a 3460
6f1401dc 3461 tryAMAGICftest_MG('t');
07fe7c6a 3462
533c011a 3463 if (PL_op->op_flags & OPf_REF)
146174a9 3464 gv = cGVOP_gv;
e5e154d2 3465 else {
d2f67720 3466 SV *tmpsv = *PL_stack_sp;
e5e154d2 3467 if (!(gv = MAYBE_DEREF_GV_nomg(tmpsv))) {
40c852de
DM		 3468 name = SvPV_nomg(tmpsv, namelen);
3469 gv = gv_fetchpvn_flags(name, namelen, SvUTF8(tmpsv), SVt_PVIO);
e5e154d2 3470 }
40c852de 3471 }
fb73857a 3472
a0d0e21e 3473 if (GvIO(gv) && IoIFP(GvIOp(gv)))
760ac839 3474 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
22ff3130
HS		 3475 else if (name && isDIGIT(*name) && grok_atoUV(name, &uv, NULL) && uv <= PERL_INT_MAX)
3476 fd = (int)uv;
a0d0e21e 3477 else
97c8f3e6 3478 fd = -1;
375ed12a
JH		 3479 if (fd < 0) {
3480 SETERRNO(EBADF,RMS_IFI);
3481 FT_RETURNUNDEF;
3482 }
6ad3d225 3483 if (PerlLIO_isatty(fd))
8db8f6b6
FC		 3484 FT_RETURNYES;
3485 FT_RETURNNO;
a0d0e21e
LW		 3486}
3487
b1c05ba5
DM		 3488
3489/* also used for: pp_ftbinary() */
3490
a0d0e21e
LW		 3491PP(pp_fttext)
3492{
a0d0e21e 3493 I32 i;
b66f3475 3494 SSize_t len;
a0d0e21e
LW		 3495 I32 odd = 0;
3496 STDCHAR tbuf[512];
eb578fdb
KW		 3497 STDCHAR *s;
3498 IO *io;
3499 SV *sv = NULL;
5f05dabc 3500 GV *gv;
146174a9 3501 PerlIO *fp;
8cd29efc 3502 const U8 * first_variant;
a0d0e21e 3503
6f1401dc 3504 tryAMAGICftest_MG(PL_op->op_type == OP_FTTEXT ? 'T' : 'B');
07fe7c6a 3505
533c011a 3506 if (PL_op->op_flags & OPf_REF)
146174a9 3507 gv = cGVOP_gv;
d2c4d2d1 3508 else if ((PL_op->op_private & (OPpFT_STACKED|OPpFT_AFTER_t))
8db8f6b6 3509 == OPpFT_STACKED)
ba8182f8 3510 gv = PL_defgv;
d2c4d2d1 3511 else {
d2f67720 3512 sv = *PL_stack_sp;
d2c4d2d1 3513 gv = MAYBE_DEREF_GV_nomg(sv);
8db8f6b6 3514 }
5f05dabc 3515
3516 if (gv) {
3280af22
NIS		 3517 if (gv == PL_defgv) {
3518 if (PL_statgv)
bd5f6c01
FC		 3519 io = SvTYPE(PL_statgv) == SVt_PVIO
3520 ? (IO *)PL_statgv
3521 : GvIO(PL_statgv);
a0d0e21e 3522 else {
a0d0e21e
LW		 3523 goto really_filename;
3524 }
3525 }
3526 else {
3280af22 3527 PL_statgv = gv;
60e13354 3528 SvPVCLEAR(PL_statname);
3280af22 3529 io = GvIO(PL_statgv);
a0d0e21e 3530 }
eb4c377a 3531 PL_laststatval = -1;
21a64c3e 3532 PL_laststype = OP_STAT;
a0d0e21e 3533 if (io && IoIFP(io)) {
375ed12a 3534 int fd;
5f05dabc 3535 if (! PerlIO_has_base(IoIFP(io)))
cea2e8a9 3536 DIE(aTHX_ "-T and -B not implemented on filehandles");
375ed12a
JH		 3537 fd = PerlIO_fileno(IoIFP(io));
3538 if (fd < 0) {
3539 SETERRNO(EBADF,RMS_IFI);
3540 FT_RETURNUNDEF;
3541 }
3542 PL_laststatval = PerlLIO_fstat(fd, &PL_statcache);
3280af22 3543 if (PL_laststatval < 0)
8db8f6b6 3544 FT_RETURNUNDEF;
9cbac4c7 3545 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
533c011a 3546 if (PL_op->op_type == OP_FTTEXT)
8db8f6b6 3547 FT_RETURNNO;
a0d0e21e 3548 else
8db8f6b6 3549 FT_RETURNYES;
9cbac4c7 3550 }
a20bf0c3 3551 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
760ac839 3552 i = PerlIO_getc(IoIFP(io));
a0d0e21e 3553 if (i != EOF)
760ac839 3554 (void)PerlIO_ungetc(IoIFP(io),i);
bd47baf2
NT		 3555 else
3556 /* null file is anything */
3557 FT_RETURNYES;
a0d0e21e 3558 }
a20bf0c3
JH		 3559 len = PerlIO_get_bufsiz(IoIFP(io));
3560 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
760ac839
LW		 3561 /* sfio can have large buffers - limit to 512 */
3562 if (len > 512)
3563 len = 512;
a0d0e21e
LW		 3564 }
3565 else {
2ad48547 3566 SETERRNO(EBADF,RMS_IFI);
3f12cff4 3567 report_evil_fh(gv);
93189314 3568 SETERRNO(EBADF,RMS_IFI);
8db8f6b6 3569 FT_RETURNUNDEF;
a0d0e21e
LW		 3570 }
3571 }
3572 else {
7cb3f959 3573 const char *file;
a155eb05
TC		 3574 const char *temp;
3575 STRLEN temp_len;
375ed12a 3576 int fd;
7cb3f959 3577
9959d439 3578 assert(sv);
a155eb05
TC		 3579 temp = SvPV_nomg_const(sv, temp_len);
3580 sv_setpv(PL_statname, temp);
3581 if (!IS_SAFE_PATHNAME(temp, temp_len, OP_NAME(PL_op))) {
3582 PL_laststatval = -1;
3583 PL_laststype = OP_STAT;
3584 FT_RETURNUNDEF;
3585 }
5f05dabc 3586 really_filename:
7cb3f959 3587 file = SvPVX_const(PL_statname);
a0714e2c 3588 PL_statgv = NULL;
7cb3f959 3589 if (!(fp = PerlIO_open(file, "r"))) {
ad2d99e3
FC		 3590 if (!gv) {
3591 PL_laststatval = -1;
3592 PL_laststype = OP_STAT;
3593 }
7cb3f959 3594 if (ckWARN(WARN_NEWLINE) && should_warn_nl(file)) {
5d37acd6
DM		 3595 /* PL_warn_nl is constant */
3596 GCC_DIAG_IGNORE(-Wformat-nonliteral);
9014280d 3597 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
5d37acd6
DM		 3598 GCC_DIAG_RESTORE;
3599 }
8db8f6b6 3600 FT_RETURNUNDEF;
a0d0e21e 3601 }
ad2d99e3 3602 PL_laststype = OP_STAT;
375ed12a
JH		 3603 fd = PerlIO_fileno(fp);
3604 if (fd < 0) {
3605 (void)PerlIO_close(fp);
3606 SETERRNO(EBADF,RMS_IFI);
3607 FT_RETURNUNDEF;
3608 }
3609 PL_laststatval = PerlLIO_fstat(fd, &PL_statcache);
146174a9 3610 if (PL_laststatval < 0) {
3f6b66c1 3611 dSAVE_ERRNO;
146174a9 3612 (void)PerlIO_close(fp);
3f6b66c1 3613 RESTORE_ERRNO;
8db8f6b6 3614 FT_RETURNUNDEF;
146174a9 3615 }
bd61b366 3616 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, NULL);
146174a9
CB		 3617 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3618 (void)PerlIO_close(fp);
a0d0e21e 3619 if (len <= 0) {
533c011a 3620 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
8db8f6b6
FC		 3621 FT_RETURNNO; /* special case NFS directories */
3622 FT_RETURNYES; /* null file is anything */
a0d0e21e
LW		 3623 }
3624 s = tbuf;
3625 }
3626
3627 /* now scan s to look for textiness */
3628
146174a9
CB		 3629#if defined(DOSISH) || defined(USEMYBINMODE)
3630 /* ignore trailing ^Z on short files */
58c0efa5 3631 if (len && len < (I32)sizeof(tbuf) && tbuf[len-1] == 26)
146174a9
CB		 3632 --len;
3633#endif
3634
f13c8ddb 3635 assert(len);
8cd29efc 3636 if (! is_utf8_invariant_string_loc((U8 *) s, len, &first_variant)) {
f13c8ddb 3637
9f10db87 3638 /* Here contains a variant under UTF-8 . See if the entire string is
8bc127bf 3639 * UTF-8. */
8cd29efc 3640 if (is_utf8_fixed_width_buf_flags(first_variant,
6658c416 3641 len - ((char *) first_variant - (char *) s),
8cd29efc
KW		 3642 0))
3643 {
f13c8ddb
KW		 3644 if (PL_op->op_type == OP_FTTEXT) {
3645 FT_RETURNYES;
3646 }
3647 else {
3648 FT_RETURNNO;
3649 }
3650 }
3651 }
3652
3653 /* Here, is not UTF-8 or is entirely ASCII. Look through the buffer for
3654 * things that wouldn't be in ASCII text or rich ASCII text. Count these
3655 * in 'odd' */
a0d0e21e
LW		 3656 for (i = 0; i < len; i++, s++) {
3657 if (!*s) { /* null never allowed in text */
3658 odd += len;
3659 break;
3660 }
130c5df3 3661#ifdef USE_LOCALE_CTYPE
f13c8ddb
KW		 3662 if (IN_LC_RUNTIME(LC_CTYPE)) {
3663 if ( isPRINT_LC(*s) || isSPACE_LC(*s)) {
b3f66c68 3664 continue;
f13c8ddb
KW		 3665 }
3666 }
3667 else
3668#endif
af4226f2
KW		 3669 if ( isPRINT_A(*s)
3670 /* VT occurs so rarely in text, that we consider it odd */
3671 || (isSPACE_A(*s) && *s != VT_NATIVE)
f13c8ddb
KW		 3672
3673 /* But there is a fair amount of backspaces and escapes in
3674 * some text */
af4226f2
KW		 3675 || *s == '\b'
3676 || *s == ESC_NATIVE)
f13c8ddb
KW		 3677 {
3678 continue;
3679 }
3680 odd++;
a0d0e21e
LW		 3681 }
3682
533c011a 3683 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
8db8f6b6 3684 FT_RETURNNO;
a0d0e21e 3685 else
8db8f6b6 3686 FT_RETURNYES;
a0d0e21e
LW		 3687}
3688
a0d0e21e
LW		 3689/* File calls. */
3690
3691PP(pp_chdir)
3692{
20b7effb 3693 dSP; dTARGET;
c445ea15 3694 const char *tmps = NULL;
9a957fbc 3695 GV *gv = NULL;
a0d0e21e 3696
c4aca7d0 3697 if( MAXARG == 1 ) {
9a957fbc 3698 SV * const sv = POPs;
d4ac975e
GA		 3699 if (PL_op->op_flags & OPf_SPECIAL) {
3700 gv = gv_fetchsv(sv, 0, SVt_PVIO);
60121127
TC		 3701 if (!gv) {
3702 if (ckWARN(WARN_UNOPENED)) {
3703 Perl_warner(aTHX_ packWARN(WARN_UNOPENED),
3704 "chdir() on unopened filehandle %" SVf, sv);
3705 }
3706 SETERRNO(EBADF,RMS_IFI);
725c44f9 3707 PUSHs(&PL_sv_zero);
60121127
TC		 3708 TAINT_PROPER("chdir");
3709 RETURN;
3710 }
d4ac975e 3711 }
2ea1cce7 3712 else if (!(gv = MAYBE_DEREF_GV(sv)))
a0c4bfab 3713 tmps = SvPV_nomg_const_nolen(sv);
c4aca7d0 3714 }
b4929cb4 3715 else {
9a957fbc
AL		 3716 HV * const table = GvHVn(PL_envgv);
3717 SV **svp;
3718
92c843fb 3719 EXTEND(SP, 1);
a4fc7abc
AL		 3720 if ( (svp = hv_fetchs(table, "HOME", FALSE))
3721 || (svp = hv_fetchs(table, "LOGDIR", FALSE))
491527d0 3722#ifdef VMS
a4fc7abc 3723 || (svp = hv_fetchs(table, "SYS$LOGIN", FALSE))
491527d0 3724#endif
35ae6b54
MS		 3725 )
3726 {
8c074e2a 3727 tmps = SvPV_nolen_const(*svp);
35ae6b54 3728 }
72f496dc 3729 else {
725c44f9 3730 PUSHs(&PL_sv_zero);
201e9e2a 3731 SETERRNO(EINVAL, LIB_INVARG);
b7ab37f8 3732 TAINT_PROPER("chdir");
389ec635
MS		 3733 RETURN;
3734 }
8ea155d1 3735 }
8ea155d1 3736
a0d0e21e 3737 TAINT_PROPER("chdir");
c4aca7d0
GA		 3738 if (gv) {
3739#ifdef HAS_FCHDIR
9a957fbc 3740 IO* const io = GvIO(gv);
c4aca7d0 3741 if (io) {
c08d6937 3742 if (IoDIRP(io)) {
3497a01f 3743 PUSHi(fchdir(my_dirfd(IoDIRP(io))) >= 0);
c08d6937 3744 } else if (IoIFP(io)) {
375ed12a
JH		 3745 int fd = PerlIO_fileno(IoIFP(io));
3746 if (fd < 0) {
3747 goto nuts;
3748 }
3749 PUSHi(fchdir(fd) >= 0);
c4aca7d0
GA		 3750 }
3751 else {
375ed12a 3752 goto nuts;
c4aca7d0 3753 }
375ed12a
JH		 3754 } else {
3755 goto nuts;
c4aca7d0 3756 }
375ed12a 3757
c4aca7d0
GA		 3758#else
3759 DIE(aTHX_ PL_no_func, "fchdir");
3760#endif
3761 }
3762 else
b8ffc8df 3763 PUSHi( PerlDir_chdir(tmps) >= 0 );
748a9306
LW		 3764#ifdef VMS
3765 /* Clear the DEFAULT element of ENV so we'll get the new value
3766 * in the future. */
6b88bc9c 3767 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
748a9306 3768#endif
a0d0e21e 3769 RETURN;
375ed12a 3770
0a9cc54c 3771#ifdef HAS_FCHDIR
375ed12a
JH		 3772 nuts:
3773 report_evil_fh(gv);
3774 SETERRNO(EBADF,RMS_IFI);
725c44f9 3775 PUSHs(&PL_sv_zero);
375ed12a 3776 RETURN;
0a9cc54c 3777#endif
a0d0e21e
LW		 3778}
3779
b1c05ba5
DM		 3780
3781/* also used for: pp_chmod() pp_kill() pp_unlink() pp_utime() */
3782
a0d0e21e
LW		 3783PP(pp_chown)
3784{
20b7effb 3785 dSP; dMARK; dTARGET;
605b9385 3786 const I32 value = (I32)apply(PL_op->op_type, MARK, SP);
76ffd3b9 3787
a0d0e21e 3788 SP = MARK;
b59aed67 3789 XPUSHi(value);
a0d0e21e 3790 RETURN;
a0d0e21e
LW		 3791}
3792
3793PP(pp_chroot)
3794{
a0d0e21e 3795#ifdef HAS_CHROOT
20b7effb 3796 dSP; dTARGET;
7452cf6a 3797 char * const tmps = POPpx;
a0d0e21e
LW		 3798 TAINT_PROPER("chroot");
3799 PUSHi( chroot(tmps) >= 0 );
3800 RETURN;
3801#else
cea2e8a9 3802 DIE(aTHX_ PL_no_func, "chroot");
a0d0e21e
LW		 3803#endif
3804}
3805
a0d0e21e
LW		 3806PP(pp_rename)
3807{
20b7effb 3808 dSP; dTARGET;
a0d0e21e 3809 int anum;
45a23732
DD		 3810#ifndef HAS_RENAME
3811 Stat_t statbuf;
3812#endif
7452cf6a
AL		 3813 const char * const tmps2 = POPpconstx;
3814 const char * const tmps = SvPV_nolen_const(TOPs);
a0d0e21e
LW		 3815 TAINT_PROPER("rename");
3816#ifdef HAS_RENAME
baed7233 3817 anum = PerlLIO_rename(tmps, tmps2);
a0d0e21e 3818#else
45a23732 3819 if (!(anum = PerlLIO_stat(tmps, &statbuf))) {
ed969818
W		 3820 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3821 anum = 1;
3822 else {
45a23732 3823 if (PerlProc_geteuid() || PerlLIO_stat(tmps2, &statbuf) < 0 || !S_ISDIR(statbuf.st_mode))
ed969818
W		 3824 (void)UNLINK(tmps2);
3825 if (!(anum = link(tmps, tmps2)))
3826 anum = UNLINK(tmps);
3827 }
a0d0e21e
LW		 3828 }
3829#endif
3830 SETi( anum >= 0 );
3831 RETURN;
3832}
3833
b1c05ba5
DM		 3834
3835/* also used for: pp_symlink() */
3836
ce6987d0 3837#if defined(HAS_LINK) || defined(HAS_SYMLINK)
a0d0e21e
LW		 3838PP(pp_link)
3839{
20b7effb 3840 dSP; dTARGET;
ce6987d0
NC		 3841 const int op_type = PL_op->op_type;
3842 int result;
a0d0e21e 3843
ce6987d0
NC		 3844# ifndef HAS_LINK
3845 if (op_type == OP_LINK)
3846 DIE(aTHX_ PL_no_func, "link");
3847# endif
3848# ifndef HAS_SYMLINK
3849 if (op_type == OP_SYMLINK)
3850 DIE(aTHX_ PL_no_func, "symlink");
3851# endif
3852
3853 {
7452cf6a
AL		 3854 const char * const tmps2 = POPpconstx;
3855 const char * const tmps = SvPV_nolen_const(TOPs);
ce6987d0
NC		 3856 TAINT_PROPER(PL_op_desc[op_type]);
3857 result =
8d698507 3858# if defined(HAS_LINK) && defined(HAS_SYMLINK)
ce6987d0
NC		 3859 /* Both present - need to choose which. */
3860 (op_type == OP_LINK) ?
3861 PerlLIO_link(tmps, tmps2) : symlink(tmps, tmps2);
8d698507 3862# elif defined(HAS_LINK)
4a8ebb7f
SH		 3863 /* Only have link, so calls to pp_symlink will have DIE()d above. */
3864 PerlLIO_link(tmps, tmps2);
8d698507 3865# elif defined(HAS_SYMLINK)
4a8ebb7f
SH		 3866 /* Only have symlink, so calls to pp_link will have DIE()d above. */
3867 symlink(tmps, tmps2);
ce6987d0
NC		 3868# endif
3869 }
3870
3871 SETi( result >= 0 );
a0d0e21e 3872 RETURN;
ce6987d0 3873}
a0d0e21e 3874#else
b1c05ba5
DM		 3875
3876/* also used for: pp_symlink() */
3877
ce6987d0
NC		 3878PP(pp_link)
3879{
3880 /* Have neither. */
3881 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
a0d0e21e 3882}
ce6987d0 3883#endif
a0d0e21e
LW		 3884
3885PP(pp_readlink)
3886{
76ffd3b9 3887 dSP;
a0d0e21e 3888#ifdef HAS_SYMLINK
76ffd3b9 3889 dTARGET;
10516c54 3890 const char *tmps;
46fc3d4c 3891 char buf[MAXPATHLEN];
51b468f6 3892 SSize_t len;
46fc3d4c 3893
fb73857a 3894 TAINT;
10516c54 3895 tmps = POPpconstx;
51b468f6
JH		 3896 /* NOTE: if the length returned by readlink() is sizeof(buf) - 1,
3897 * it is impossible to know whether the result was truncated. */
97dcea33 3898 len = readlink(tmps, buf, sizeof(buf) - 1);
a0d0e21e
LW		 3899 if (len < 0)
3900 RETPUSHUNDEF;
51b468f6
JH		 3901 if (len != -1)
3902 buf[len] = '\0';
a0d0e21e
LW		 3903 PUSHp(buf, len);
3904 RETURN;
3905#else
3906 EXTEND(SP, 1);
3907 RETSETUNDEF; /* just pretend it's a normal file */
3908#endif
3909}
3910
3911#if !defined(HAS_MKDIR) || !defined(HAS_RMDIR)
ba106d47 3912STATIC int
b464bac0 3913S_dooneliner(pTHX_ const char *cmd, const char *filename)
a0d0e21e 3914{
b464bac0 3915 char * const save_filename = filename;
1e422769 3916 char *cmdline;
3917 char *s;
760ac839 3918 PerlIO *myfp;
1e422769 3919 int anum = 1;
6fca0082 3920 Size_t size = strlen(cmd) + (strlen(filename) * 2) + 10;
a0d0e21e 3921
7918f24d
NC		 3922 PERL_ARGS_ASSERT_DOONELINER;
3923
6fca0082
SP		 3924 Newx(cmdline, size, char);
3925 my_strlcpy(cmdline, cmd, size);
3926 my_strlcat(cmdline, " ", size);
1e422769 3927 for (s = cmdline + strlen(cmdline); *filename; ) {
a0d0e21e
LW		 3928 *s++ = '\\';
3929 *s++ = *filename++;
3930 }
d1307786
JH		 3931 if (s - cmdline < size)
3932 my_strlcpy(s, " 2>&1", size - (s - cmdline));
6ad3d225 3933 myfp = PerlProc_popen(cmdline, "r");
1e422769 3934 Safefree(cmdline);
3935
a0d0e21e 3936 if (myfp) {
0bcc34c2 3937 SV * const tmpsv = sv_newmortal();
6b88bc9c 3938 /* Need to save/restore 'PL_rs' ?? */
760ac839 3939 s = sv_gets(tmpsv, myfp, 0);
6ad3d225 3940 (void)PerlProc_pclose(myfp);
bd61b366 3941 if (s != NULL) {
1e422769 3942 int e;
3943 for (e = 1;
a0d0e21e 3944#ifdef HAS_SYS_ERRLIST
1e422769 3945 e <= sys_nerr
3946#endif
3947 ; e++)
3948 {
3949 /* you don't see this */
9b86a269 3950 const char * const errmsg = Strerror(e) ;
1e422769 3951 if (!errmsg)
3952 break;
3953 if (instr(s, errmsg)) {
3954 SETERRNO(e,0);
3955 return 0;
3956 }
a0d0e21e 3957 }
748a9306 3958 SETERRNO(0,0);
a0d0e21e
LW		 3959#ifndef EACCES
3960#define EACCES EPERM
3961#endif
1e422769 3962 if (instr(s, "cannot make"))
93189314 3963 SETERRNO(EEXIST,RMS_FEX);
1e422769 3964 else if (instr(s, "existing file"))
93189314 3965 SETERRNO(EEXIST,RMS_FEX);
1e422769 3966 else if (instr(s, "ile exists"))
93189314 3967 SETERRNO(EEXIST,RMS_FEX);
1e422769 3968 else if (instr(s, "non-exist"))
93189314 3969 SETERRNO(ENOENT,RMS_FNF);
1e422769 3970 else if (instr(s, "does not exist"))
93189314 3971 SETERRNO(ENOENT,RMS_FNF);
1e422769 3972 else if (instr(s, "not empty"))
93189314 3973 SETERRNO(EBUSY,SS_DEVOFFLINE);
1e422769 3974 else if (instr(s, "cannot access"))
93189314 3975 SETERRNO(EACCES,RMS_PRV);
a0d0e21e 3976 else
93189314 3977 SETERRNO(EPERM,RMS_PRV);
a0d0e21e
LW		 3978 return 0;
3979 }
3980 else { /* some mkdirs return no failure indication */
45a23732
DD		 3981 Stat_t statbuf;
3982 anum = (PerlLIO_stat(save_filename, &statbuf) >= 0);
911d147d 3983 if (PL_op->op_type == OP_RMDIR)
a0d0e21e
LW		 3984 anum = !anum;
3985 if (anum)
748a9306 3986 SETERRNO(0,0);
a0d0e21e 3987 else
93189314 3988 SETERRNO(EACCES,RMS_PRV); /* a guess */
a0d0e21e
LW		 3989 }
3990 return anum;
3991 }
3992 else
3993 return 0;
3994}
3995#endif
3996
0c54f65b
RGS		 3997/* This macro removes trailing slashes from a directory name.
3998 * Different operating and file systems take differently to
3999 * trailing slashes. According to POSIX 1003.1 1996 Edition
4000 * any number of trailing slashes should be allowed.
4001 * Thusly we snip them away so that even non-conforming
4002 * systems are happy.
4003 * We should probably do this "filtering" for all
4004 * the functions that expect (potentially) directory names:
4005 * -d, chdir(), chmod(), chown(), chroot(), fcntl()?,
4006 * (mkdir()), opendir(), rename(), rmdir(), stat(). --jhi */
4007
5c144d81 4008#define TRIMSLASHES(tmps,len,copy) (tmps) = SvPV_const(TOPs, (len)); \
0c54f65b
RGS		 4009 if ((len) > 1 && (tmps)[(len)-1] == '/') { \
4010 do { \
4011 (len)--; \
4012 } while ((len) > 1 && (tmps)[(len)-1] == '/'); \
4013 (tmps) = savepvn((tmps), (len)); \
4014 (copy) = TRUE; \
4015 }
4016
a0d0e21e
LW		 4017PP(pp_mkdir)
4018{
20b7effb 4019 dSP; dTARGET;
df25ddba 4020 STRLEN len;
5c144d81 4021 const char *tmps;
df25ddba 4022 bool copy = FALSE;
2ef2454e 4023 const unsigned int mode = (MAXARG > 1 && (TOPs||((void)POPs,0))) ? POPu : 0777;
5a211162 4024
0c54f65b 4025 TRIMSLASHES(tmps,len,copy);
a0d0e21e
LW		 4026
4027 TAINT_PROPER("mkdir");
4028#ifdef HAS_MKDIR
b8ffc8df 4029 SETi( PerlDir_mkdir(tmps, mode) >= 0 );
a0d0e21e 4030#else
0bcc34c2
AL		 4031 {
4032 int oldumask;
a0d0e21e 4033 SETi( dooneliner("mkdir", tmps) );
6ad3d225
GS		 4034 oldumask = PerlLIO_umask(0);
4035 PerlLIO_umask(oldumask);
4036 PerlLIO_chmod(tmps, (mode & ~oldumask) & 0777);
0bcc34c2 4037 }
a0d0e21e 4038#endif
df25ddba
JH		 4039 if (copy)
4040 Safefree(tmps);
a0d0e21e
LW		 4041 RETURN;
4042}
4043
4044PP(pp_rmdir)
4045{
20b7effb 4046 dSP; dTARGET;
0c54f65b 4047 STRLEN len;
5c144d81 4048 const char *tmps;
0c54f65b 4049 bool copy = FALSE;
a0d0e21e 4050
0c54f65b 4051 TRIMSLASHES(tmps,len,copy);
a0d0e21e
LW		 4052 TAINT_PROPER("rmdir");
4053#ifdef HAS_RMDIR
b8ffc8df 4054 SETi( PerlDir_rmdir(tmps) >= 0 );
a0d0e21e 4055#else
0c54f65b 4056 SETi( dooneliner("rmdir", tmps) );
a0d0e21e 4057#endif
0c54f65b
RGS		 4058 if (copy)
4059 Safefree(tmps);
a0d0e21e
LW		 4060 RETURN;
4061}
4062
4063/* Directory calls. */
4064
4065PP(pp_open_dir)
4066{
a0d0e21e 4067#if defined(Direntry_t) && defined(HAS_READDIR)
20b7effb 4068 dSP;
7452cf6a 4069 const char * const dirname = POPpconstx;
159b6efe 4070 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 4071 IO * const io = GvIOn(gv);
a0d0e21e 4072
a2a5de95 4073 if ((IoIFP(io) || IoOFP(io)))
489c16bf
DIM		 4074 Perl_croak(aTHX_ "Cannot open %" HEKf " as a dirhandle: it is already open as a filehandle",
4075 HEKfARG(GvENAME_HEK(gv)));
a0d0e21e 4076 if (IoDIRP(io))
6ad3d225 4077 PerlDir_close(IoDIRP(io));
b8ffc8df 4078 if (!(IoDIRP(io) = PerlDir_open(dirname)))
a0d0e21e
LW		 4079 goto nope;
4080
4081 RETPUSHYES;
7b52d656 4082 nope:
a0d0e21e 4083 if (!errno)
93189314 4084 SETERRNO(EBADF,RMS_DIR);
a0d0e21e
LW		 4085 RETPUSHUNDEF;
4086#else
cea2e8a9 4087 DIE(aTHX_ PL_no_dir_func, "opendir");
a0d0e21e
LW		 4088#endif
4089}
4090
4091PP(pp_readdir)
4092{
34b7f128
AMS		 4093#if !defined(Direntry_t) || !defined(HAS_READDIR)
4094 DIE(aTHX_ PL_no_dir_func, "readdir");
4095#else
fd8cd3a3 4096#if !defined(I_DIRENT) && !defined(VMS)
20ce7b12 4097 Direntry_t *readdir (DIR *);
a0d0e21e 4098#endif
34b7f128
AMS		 4099 dSP;
4100
4101 SV *sv;
1c23e2bd 4102 const U8 gimme = GIMME_V;
159b6efe 4103 GV * const gv = MUTABLE_GV(POPs);
eb578fdb
KW		 4104 const Direntry_t *dp;
4105 IO * const io = GvIOn(gv);
a0d0e21e 4106
8a6c0fcb 4107 if (!IoDIRP(io)) {
a2a5de95 4108 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
147e3846 4109 "readdir() attempted on invalid dirhandle %" HEKf,
d0c0e7dd 4110 HEKfARG(GvENAME_HEK(gv)));
3b7fbd4a
SP		 4111 goto nope;
4112 }
a0d0e21e 4113
34b7f128
AMS		 4114 do {
4115 dp = (Direntry_t *)PerlDir_read(IoDIRP(io));
4116 if (!dp)
4117 break;
a0d0e21e 4118#ifdef DIRNAMLEN
34b7f128 4119 sv = newSVpvn(dp->d_name, dp->d_namlen);
a0d0e21e 4120#else
34b7f128 4121 sv = newSVpv(dp->d_name, 0);
fb73857a 4122#endif
34b7f128
AMS		 4123 if (!(IoFLAGS(io) & IOf_UNTAINT))
4124 SvTAINTED_on(sv);
6e449a3a 4125 mXPUSHs(sv);
a79db61d 4126 } while (gimme == G_ARRAY);
34b7f128
AMS		 4127
4128 if (!dp && gimme != G_ARRAY)
ee71f1d1 4129 RETPUSHUNDEF;
34b7f128 4130
a0d0e21e
LW		 4131 RETURN;
4132
7b52d656 4133 nope:
a0d0e21e 4134 if (!errno)
93189314 4135 SETERRNO(EBADF,RMS_ISI);
da39159d 4136 if (gimme == G_ARRAY)
a0d0e21e
LW		 4137 RETURN;
4138 else
4139 RETPUSHUNDEF;
a0d0e21e
LW		 4140#endif
4141}
4142
4143PP(pp_telldir)
4144{
a0d0e21e 4145#if defined(HAS_TELLDIR) || defined(telldir)
20b7effb 4146 dSP; dTARGET;
968dcd91
JH		 4147 /* XXX does _anyone_ need this? --AD 2/20/1998 */
4148 /* XXX netbsd still seemed to.
4149 XXX HAS_TELLDIR_PROTO is new style, NEED_TELLDIR_PROTO is old style.
4150 --JHI 1999-Feb-02 */
4151# if !defined(HAS_TELLDIR_PROTO) || defined(NEED_TELLDIR_PROTO)
20ce7b12 4152 long telldir (DIR *);
dfe9444c 4153# endif
159b6efe 4154 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 4155 IO * const io = GvIOn(gv);
a0d0e21e 4156
8a6c0fcb 4157 if (!IoDIRP(io)) {
a2a5de95 4158 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
147e3846 4159 "telldir() attempted on invalid dirhandle %" HEKf,
d0c0e7dd 4160 HEKfARG(GvENAME_HEK(gv)));
abc7ecad
SP		 4161 goto nope;
4162 }
a0d0e21e 4163
6ad3d225 4164 PUSHi( PerlDir_tell(IoDIRP(io)) );
a0d0e21e 4165 RETURN;
7b52d656 4166 nope:
a0d0e21e 4167 if (!errno)
93189314 4168 SETERRNO(EBADF,RMS_ISI);
a0d0e21e
LW		 4169 RETPUSHUNDEF;
4170#else
cea2e8a9 4171 DIE(aTHX_ PL_no_dir_func, "telldir");
a0d0e21e
LW		 4172#endif
4173}
4174
4175PP(pp_seekdir)
4176{
a0d0e21e 4177#if defined(HAS_SEEKDIR) || defined(seekdir)
20b7effb 4178 dSP;
7452cf6a 4179 const long along = POPl;
159b6efe 4180 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 4181 IO * const io = GvIOn(gv);
a0d0e21e 4182
8a6c0fcb 4183 if (!IoDIRP(io)) {
a2a5de95 4184 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
147e3846 4185 "seekdir() attempted on invalid dirhandle %" HEKf,
d0c0e7dd 4186 HEKfARG(GvENAME_HEK(gv)));
abc7ecad
SP		 4187 goto nope;
4188 }
6ad3d225 4189 (void)PerlDir_seek(IoDIRP(io), along);
a0d0e21e
LW		 4190
4191 RETPUSHYES;
7b52d656 4192 nope:
a0d0e21e 4193 if (!errno)
93189314 4194 SETERRNO(EBADF,RMS_ISI);
a0d0e21e
LW		 4195 RETPUSHUNDEF;
4196#else
cea2e8a9 4197 DIE(aTHX_ PL_no_dir_func, "seekdir");
a0d0e21e
LW		 4198#endif
4199}
4200
4201PP(pp_rewinddir)
4202{
a0d0e21e 4203#if defined(HAS_REWINDDIR) || defined(rewinddir)
20b7effb 4204 dSP;
159b6efe 4205 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 4206 IO * const io = GvIOn(gv);
a0d0e21e 4207
8a6c0fcb 4208 if (!IoDIRP(io)) {
a2a5de95 4209 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
147e3846 4210 "rewinddir() attempted on invalid dirhandle %" HEKf,
d0c0e7dd 4211 HEKfARG(GvENAME_HEK(gv)));
a0d0e21e 4212 goto nope;
abc7ecad 4213 }
6ad3d225 4214 (void)PerlDir_rewind(IoDIRP(io));
a0d0e21e 4215 RETPUSHYES;
7b52d656 4216 nope:
a0d0e21e 4217 if (!errno)
93189314 4218 SETERRNO(EBADF,RMS_ISI);
a0d0e21e
LW		 4219 RETPUSHUNDEF;
4220#else
cea2e8a9 4221 DIE(aTHX_ PL_no_dir_func, "rewinddir");
a0d0e21e
LW		 4222#endif
4223}
4224
4225PP(pp_closedir)
4226{
a0d0e21e 4227#if defined(Direntry_t) && defined(HAS_READDIR)
20b7effb 4228 dSP;
159b6efe 4229 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 4230 IO * const io = GvIOn(gv);
a0d0e21e 4231
8a6c0fcb 4232 if (!IoDIRP(io)) {
a2a5de95 4233 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
147e3846 4234 "closedir() attempted on invalid dirhandle %" HEKf,
d0c0e7dd 4235 HEKfARG(GvENAME_HEK(gv)));
abc7ecad
SP		 4236 goto nope;
4237 }
a0d0e21e 4238#ifdef VOID_CLOSEDIR
6ad3d225 4239 PerlDir_close(IoDIRP(io));
a0d0e21e 4240#else
6ad3d225 4241 if (PerlDir_close(IoDIRP(io)) < 0) {
748a9306 4242 IoDIRP(io) = 0; /* Don't try to close again--coredumps on SysV */
a0d0e21e 4243 goto nope;
748a9306 4244 }
a0d0e21e
LW		 4245#endif
4246 IoDIRP(io) = 0;
4247
4248 RETPUSHYES;
7b52d656 4249 nope:
a0d0e21e 4250 if (!errno)
93189314 4251 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW		 4252 RETPUSHUNDEF;
4253#else
cea2e8a9 4254 DIE(aTHX_ PL_no_dir_func, "closedir");
a0d0e21e
LW		 4255#endif
4256}
4257
4258/* Process control. */
4259
4260PP(pp_fork)
4261{
44a8e56a 4262#ifdef HAS_FORK
20b7effb 4263 dSP; dTARGET;
761237fe 4264 Pid_t childpid;
21e89b5f 4265#ifdef HAS_SIGPROCMASK
eb3d0a58
LT		 4266 sigset_t oldmask, newmask;
4267#endif
a0d0e21e
LW		 4268
4269 EXTEND(SP, 1);
45bc9206 4270 PERL_FLUSHALL_FOR_CHILD;
21e89b5f 4271#ifdef HAS_SIGPROCMASK
eb3d0a58
LT		 4272 sigfillset(&newmask);
4273 sigprocmask(SIG_SETMASK, &newmask, &oldmask);
4274#endif
52e18b1f 4275 childpid = PerlProc_fork();
eb3d0a58
LT		 4276 if (childpid == 0) {
4277 int sig;
4278 PL_sig_pending = 0;
4279 if (PL_psig_pend)
4280 for (sig = 1; sig < SIG_SIZE; sig++)
4281 PL_psig_pend[sig] = 0;
4282 }
21e89b5f 4283#ifdef HAS_SIGPROCMASK
eb3d0a58
LT		 4284 {
4285 dSAVE_ERRNO;
4286 sigprocmask(SIG_SETMASK, &oldmask, NULL);
4287 RESTORE_ERRNO;
4288 }
4289#endif
a0d0e21e 4290 if (childpid < 0)
af2fe5eb 4291 RETPUSHUNDEF;
a0d0e21e 4292 if (!childpid) {
ca0c25f6 4293#ifdef PERL_USES_PL_PIDSTATUS
3280af22 4294 hv_clear(PL_pidstatus); /* no kids, so don't wait for 'em */
ca0c25f6 4295#endif
a0d0e21e
LW		 4296 }
4297 PUSHi(childpid);
4298 RETURN;
8d698507 4299#elif (defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)) || defined(__amigaos4__)
39644a26 4300 dSP; dTARGET;
146174a9
CB		 4301 Pid_t childpid;
4302
4303 EXTEND(SP, 1);
4304 PERL_FLUSHALL_FOR_CHILD;
4305 childpid = PerlProc_fork();
60fa28ff 4306 if (childpid == -1)
af2fe5eb 4307 RETPUSHUNDEF;
146174a9
CB		 4308 PUSHi(childpid);
4309 RETURN;
8d698507 4310#else
0322a713 4311 DIE(aTHX_ PL_no_func, "fork");
a0d0e21e
LW		 4312#endif
4313}
4314
4315PP(pp_wait)
4316{
e37778c2 4317#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(__LIBCATAMOUNT__)
20b7effb 4318 dSP; dTARGET;
761237fe 4319 Pid_t childpid;
a0d0e21e 4320 int argflags;
a0d0e21e 4321
4ffa73a3
JH		 4322 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
4323 childpid = wait4pid(-1, &argflags, 0);
4324 else {
4325 while ((childpid = wait4pid(-1, &argflags, 0)) == -1 &&
4326 errno == EINTR) {
4327 PERL_ASYNC_CHECK();
4328 }
0a0ada86 4329 }
68a29c53
GS		 4330# if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4331 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
2fbb330f 4332 STATUS_NATIVE_CHILD_SET((childpid && childpid != -1) ? argflags : -1);
68a29c53 4333# else
2fbb330f 4334 STATUS_NATIVE_CHILD_SET((childpid > 0) ? argflags : -1);
68a29c53 4335# endif
44a8e56a 4336 XPUSHi(childpid);
a0d0e21e
LW		 4337 RETURN;
4338#else
0322a713 4339 DIE(aTHX_ PL_no_func, "wait");
a0d0e21e
LW		 4340#endif
4341}
4342
4343PP(pp_waitpid)
4344{
e37778c2 4345#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(__LIBCATAMOUNT__)
20b7effb 4346 dSP; dTARGET;
0bcc34c2
AL		 4347 const int optype = POPi;
4348 const Pid_t pid = TOPi;
2ec0bfb3 4349 Pid_t result;
40262ff4
AB		 4350#ifdef __amigaos4__
4351 int argflags = 0;
4352 result = amigaos_waitpid(aTHX_ optype, pid, &argflags);
4353 STATUS_NATIVE_CHILD_SET((result >= 0) ? argflags : -1);
4354 result = result == 0 ? pid : -1;
4355#else
a0d0e21e 4356 int argflags;
a0d0e21e 4357
4ffa73a3 4358 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
2ec0bfb3 4359 result = wait4pid(pid, &argflags, optype);
4ffa73a3 4360 else {
2ec0bfb3 4361 while ((result = wait4pid(pid, &argflags, optype)) == -1 &&
4ffa73a3
JH		 4362 errno == EINTR) {
4363 PERL_ASYNC_CHECK();
4364 }
0a0ada86 4365 }
68a29c53
GS		 4366# if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4367 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
2fbb330f 4368 STATUS_NATIVE_CHILD_SET((result && result != -1) ? argflags : -1);
68a29c53 4369# else
2fbb330f 4370 STATUS_NATIVE_CHILD_SET((result > 0) ? argflags : -1);
68a29c53 4371# endif
40262ff4 4372# endif /* __amigaos4__ */
2ec0bfb3 4373 SETi(result);
a0d0e21e
LW		 4374 RETURN;
4375#else
0322a713 4376 DIE(aTHX_ PL_no_func, "waitpid");
a0d0e21e
LW		 4377#endif
4378}
4379
4380PP(pp_system)
4381{
20b7effb 4382 dSP; dMARK; dORIGMARK; dTARGET;
9c12f1e5
RGS		 4383#if defined(__LIBCATAMOUNT__)
4384 PL_statusvalue = -1;
4385 SP = ORIGMARK;
4386 XPUSHi(-1);
4387#else
a0d0e21e 4388 I32 value;
40262ff4
AB		 4389# ifdef __amigaos4__
4390 void * result;
4391# else
76ffd3b9 4392 int result;
40262ff4 4393# endif
a0d0e21e 4394
284167a5 4395 if (TAINTING_get) {
bbd7eb8a
RD		 4396 TAINT_ENV();
4397 while (++MARK <= SP) {
10516c54 4398 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
284167a5 4399 if (TAINT_get)
bbd7eb8a
RD		 4400 break;
4401 }
4402 MARK = ORIGMARK;
5a445156 4403 TAINT_PROPER("system");
a0d0e21e 4404 }
45bc9206 4405 PERL_FLUSHALL_FOR_CHILD;
40262ff4 4406#if (defined(HAS_FORK) || defined(__amigaos4__)) && !defined(VMS) && !defined(OS2) || defined(PERL_MICRO)
d7e492a4 4407 {
ea34f6bd 4408#ifdef __amigaos4__
40262ff4
AB		 4409 struct UserData userdata;
4410 pthread_t proc;
4411#else
eb160463 4412 Pid_t childpid;
40262ff4 4413#endif
eb160463 4414 int pp[2];
27da23d5 4415 I32 did_pipes = 0;
40262ff4 4416 bool child_success = FALSE;
21e89b5f 4417#ifdef HAS_SIGPROCMASK
b1cf9e92
LT		 4418 sigset_t newset, oldset;
4419#endif
eb160463
GS		 4420
4421 if (PerlProc_pipe(pp) >= 0)
4422 did_pipes = 1;
ea34f6bd 4423#ifdef __amigaos4__
40262ff4
AB		 4424 amigaos_fork_set_userdata(aTHX_
4425 &userdata,
4426 did_pipes,
4427 pp[1],
4428 SP,
4429 mark);
4430 pthread_create(&proc,NULL,amigaos_system_child,(void *)&userdata);
4431 child_success = proc > 0;
4432#else
21e89b5f 4433#ifdef HAS_SIGPROCMASK
b1cf9e92
LT		 4434 sigemptyset(&newset);
4435 sigaddset(&newset, SIGCHLD);
4436 sigprocmask(SIG_BLOCK, &newset, &oldset);
4437#endif
eb160463
GS		 4438 while ((childpid = PerlProc_fork()) == -1) {
4439 if (errno != EAGAIN) {
4440 value = -1;
4441 SP = ORIGMARK;
b59aed67 4442 XPUSHi(value);
eb160463
GS		 4443 if (did_pipes) {
4444 PerlLIO_close(pp[0]);
4445 PerlLIO_close(pp[1]);
4446 }
21e89b5f 4447#ifdef HAS_SIGPROCMASK
b1cf9e92
LT		 4448 sigprocmask(SIG_SETMASK, &oldset, NULL);
4449#endif
eb160463
GS		 4450 RETURN;
4451 }
4452 sleep(5);
4453 }
40262ff4
AB		 4454 child_success = childpid > 0;
4455#endif
4456 if (child_success) {
eb160463
GS		 4457 Sigsave_t ihand,qhand; /* place to save signals during system() */
4458 int status;
4459
40262ff4 4460#ifndef __amigaos4__
eb160463
GS		 4461 if (did_pipes)
4462 PerlLIO_close(pp[1]);
40262ff4 4463#endif
64ca3a65 4464#ifndef PERL_MICRO
8aad04aa
JH		 4465 rsignal_save(SIGINT, (Sighandler_t) SIG_IGN, &ihand);
4466 rsignal_save(SIGQUIT, (Sighandler_t) SIG_IGN, &qhand);
64ca3a65 4467#endif
40262ff4
AB		 4468#ifdef __amigaos4__
4469 result = pthread_join(proc, (void **)&status);
4470#else
eb160463
GS		 4471 do {
4472 result = wait4pid(childpid, &status, 0);
4473 } while (result == -1 && errno == EINTR);
40262ff4 4474#endif
64ca3a65 4475#ifndef PERL_MICRO
b1cf9e92
LT		 4476#ifdef HAS_SIGPROCMASK
4477 sigprocmask(SIG_SETMASK, &oldset, NULL);
4478#endif
eb160463
GS		 4479 (void)rsignal_restore(SIGINT, &ihand);
4480 (void)rsignal_restore(SIGQUIT, &qhand);
4481#endif
37038d91 4482 STATUS_NATIVE_CHILD_SET(result == -1 ? -1 : status);
eb160463
GS		 4483 SP = ORIGMARK;
4484 if (did_pipes) {
4485 int errkid;
bb7a0f54 4486 unsigned n = 0;
eb160463
GS		 4487
4488 while (n < sizeof(int)) {
19742f39 4489 const SSize_t n1 = PerlLIO_read(pp[0],
eb160463
GS		 4490 (void*)(((char*)&errkid)+n),
4491 (sizeof(int)) - n);
4492 if (n1 <= 0)
4493 break;
4494 n += n1;
4495 }
4496 PerlLIO_close(pp[0]);
4497 if (n) { /* Error */
4498 if (n != sizeof(int))
5637ef5b 4499 DIE(aTHX_ "panic: kid popen errno read, n=%u", n);
eb160463 4500 errno = errkid; /* Propagate errno from kid */
ea34f6bd 4501#ifdef __amigaos4__
40262ff4
AB		 4502 /* The pipe always has something in it
4503 * so n alone is not enough. */
4504 if (errno > 0)
4505#endif
4506 {
4507 STATUS_NATIVE_CHILD_SET(-1);
4508 }
eb160463
GS		 4509 }
4510 }
b59aed67 4511 XPUSHi(STATUS_CURRENT);
eb160463
GS		 4512 RETURN;
4513 }
40262ff4 4514#ifndef __amigaos4__
21e89b5f 4515#ifdef HAS_SIGPROCMASK
b1cf9e92
LT		 4516 sigprocmask(SIG_SETMASK, &oldset, NULL);
4517#endif
eb160463
GS		 4518 if (did_pipes) {
4519 PerlLIO_close(pp[0]);
131d45a9 4520#if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
375ed12a
JH		 4521 if (fcntl(pp[1], F_SETFD, FD_CLOEXEC) < 0)
4522 RETPUSHUNDEF;
d5a9bfb0 4523#endif
eb160463 4524 }
e0a1f643 4525 if (PL_op->op_flags & OPf_STACKED) {
0bcc34c2 4526 SV * const really = *++MARK;
e0a1f643
JH		 4527 value = (I32)do_aexec5(really, MARK, SP, pp[1], did_pipes);
4528 }
4529 else if (SP - MARK != 1)
a0714e2c 4530 value = (I32)do_aexec5(NULL, MARK, SP, pp[1], did_pipes);
e0a1f643 4531 else {
8c074e2a 4532 value = (I32)do_exec3(SvPVx_nolen(sv_mortalcopy(*SP)), pp[1], did_pipes);
e0a1f643 4533 }
40262ff4 4534#endif /* __amigaos4__ */
e0a1f643 4535 PerlProc__exit(-1);
d5a9bfb0 4536 }
c3293030 4537#else /* ! FORK or VMS or OS/2 */
922b1888
GS		 4538 PL_statusvalue = 0;
4539 result = 0;
911d147d 4540 if (PL_op->op_flags & OPf_STACKED) {
0bcc34c2 4541 SV * const really = *++MARK;
9ec7171b 4542# if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__) || defined(__VMS)
54725af6
GS		 4543 value = (I32)do_aspawn(really, MARK, SP);
4544# else
c5be433b 4545 value = (I32)do_aspawn(really, (void **)MARK, (void **)SP);
54725af6 4546# endif
a0d0e21e 4547 }
54725af6 4548 else if (SP - MARK != 1) {
9ec7171b 4549# if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__) || defined(__VMS)
a0714e2c 4550 value = (I32)do_aspawn(NULL, MARK, SP);
54725af6 4551# else
a0714e2c 4552 value = (I32)do_aspawn(NULL, (void **)MARK, (void **)SP);
54725af6
GS		 4553# endif
4554 }
a0d0e21e 4555 else {
8c074e2a 4556 value = (I32)do_spawn(SvPVx_nolen(sv_mortalcopy(*SP)));
a0d0e21e 4557 }
922b1888
GS		 4558 if (PL_statusvalue == -1) /* hint that value must be returned as is */
4559 result = 1;
2fbb330f 4560 STATUS_NATIVE_CHILD_SET(value);
a0d0e21e 4561 SP = ORIGMARK;
b59aed67 4562 XPUSHi(result ? value : STATUS_CURRENT);
9c12f1e5
RGS		 4563#endif /* !FORK or VMS or OS/2 */
4564#endif
a0d0e21e
LW		 4565 RETURN;
4566}
4567
4568PP(pp_exec)
4569{
20b7effb 4570 dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e
LW		 4571 I32 value;
4572
284167a5 4573 if (TAINTING_get) {
bbd7eb8a
RD		 4574 TAINT_ENV();
4575 while (++MARK <= SP) {
10516c54 4576 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
284167a5 4577 if (TAINT_get)
bbd7eb8a
RD		 4578 break;
4579 }
4580 MARK = ORIGMARK;
5a445156 4581 TAINT_PROPER("exec");
bbd7eb8a 4582 }
738ab09f 4583
45bc9206 4584 PERL_FLUSHALL_FOR_CHILD;
533c011a 4585 if (PL_op->op_flags & OPf_STACKED) {
0bcc34c2 4586 SV * const really = *++MARK;
a0d0e21e
LW		 4587 value = (I32)do_aexec(really, MARK, SP);
4588 }
4589 else if (SP - MARK != 1)
4590#ifdef VMS
a0714e2c 4591 value = (I32)vms_do_aexec(NULL, MARK, SP);
a0d0e21e 4592#else
a0714e2c 4593 value = (I32)do_aexec(NULL, MARK, SP);
a0d0e21e
LW		 4594#endif
4595 else {
a0d0e21e 4596#ifdef VMS
8c074e2a 4597 value = (I32)vms_do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
a0d0e21e 4598#else
5dd60a52 4599 value = (I32)do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
a0d0e21e
LW		 4600#endif
4601 }
4602 SP = ORIGMARK;
b59aed67 4603 XPUSHi(value);
a0d0e21e
LW		 4604 RETURN;
4605}
4606
a0d0e21e
LW		 4607PP(pp_getppid)
4608{
4609#ifdef HAS_GETPPID
20b7effb 4610 dSP; dTARGET;
a0d0e21e
LW		 4611 XPUSHi( getppid() );
4612 RETURN;
4613#else
cea2e8a9 4614 DIE(aTHX_ PL_no_func, "getppid");
a0d0e21e
LW		 4615#endif
4616}
4617
4618PP(pp_getpgrp)
4619{
4620#ifdef HAS_GETPGRP
20b7effb 4621 dSP; dTARGET;
9853a804 4622 Pid_t pgrp;
8af20142
FC		 4623 const Pid_t pid =
4624 (MAXARG < 1) ? 0 : TOPs ? SvIVx(POPs) : ((void)POPs, 0);
a0d0e21e 4625
c3293030 4626#ifdef BSD_GETPGRP
9853a804 4627 pgrp = (I32)BSD_GETPGRP(pid);
a0d0e21e 4628#else
146174a9 4629 if (pid != 0 && pid != PerlProc_getpid())
cea2e8a9 4630 DIE(aTHX_ "POSIX getpgrp can't take an argument");
9853a804 4631 pgrp = getpgrp();
a0d0e21e 4632#endif
9853a804 4633 XPUSHi(pgrp);
a0d0e21e
LW		 4634 RETURN;
4635#else
56a94ef2 4636 DIE(aTHX_ PL_no_func, "getpgrp");
a0d0e21e
LW		 4637#endif
4638}
4639
4640PP(pp_setpgrp)
4641{
4642#ifdef HAS_SETPGRP
20b7effb 4643 dSP; dTARGET;
d8a83dd3
JH		 4644 Pid_t pgrp;
4645 Pid_t pid;
92f2ac5f 4646 pgrp = MAXARG == 2 && (TOPs||POPs) ? POPi : 0;
bae8cfc6 4647 if (MAXARG > 0) pid = TOPs ? TOPi : 0;
92f2ac5f 4648 else {
a0d0e21e 4649 pid = 0;
8ec05255
FC		 4650 EXTEND(SP,1);
4651 SP++;
a0d0e21e 4652 }
a0d0e21e
LW		 4653
4654 TAINT_PROPER("setpgrp");
c3293030
IZ		 4655#ifdef BSD_SETPGRP
4656 SETi( BSD_SETPGRP(pid, pgrp) >= 0 );
a0d0e21e 4657#else
146174a9
CB		 4658 if ((pgrp != 0 && pgrp != PerlProc_getpid())
4659 || (pid != 0 && pid != PerlProc_getpid()))
4660 {
4661 DIE(aTHX_ "setpgrp can't take arguments");
4662 }
a0d0e21e
LW		 4663 SETi( setpgrp() >= 0 );
4664#endif /* USE_BSDPGRP */
4665 RETURN;
4666#else
56a94ef2 4667 DIE(aTHX_ PL_no_func, "setpgrp");
a0d0e21e
LW		 4668#endif
4669}
4670
8b079db6 4671#if defined(__GLIBC__) && ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3) || (__GLIBC__ > 2))
5baa2e4f
RB		 4672# define PRIORITY_WHICH_T(which) (__priority_which_t)which
4673#else
4674# define PRIORITY_WHICH_T(which) which
4675#endif
4676
a0d0e21e
LW		 4677PP(pp_getpriority)
4678{
a0d0e21e 4679#ifdef HAS_GETPRIORITY
20b7effb 4680 dSP; dTARGET;
0bcc34c2
AL		 4681 const int who = POPi;
4682 const int which = TOPi;
5baa2e4f 4683 SETi( getpriority(PRIORITY_WHICH_T(which), who) );
a0d0e21e
LW		 4684 RETURN;
4685#else
56a94ef2 4686 DIE(aTHX_ PL_no_func, "getpriority");
a0d0e21e
LW		 4687#endif
4688}
4689
4690PP(pp_setpriority)
4691{
a0d0e21e 4692#ifdef HAS_SETPRIORITY
20b7effb 4693 dSP; dTARGET;
0bcc34c2
AL		 4694 const int niceval = POPi;
4695 const int who = POPi;
4696 const int which = TOPi;
a0d0e21e 4697 TAINT_PROPER("setpriority");
5baa2e4f 4698 SETi( setpriority(PRIORITY_WHICH_T(which), who, niceval) >= 0 );
a0d0e21e
LW		 4699 RETURN;
4700#else
56a94ef2 4701 DIE(aTHX_ PL_no_func, "setpriority");
a0d0e21e
LW		 4702#endif
4703}
4704
5baa2e4f
RB		 4705#undef PRIORITY_WHICH_T
4706
a0d0e21e
LW		 4707/* Time calls. */
4708
4709PP(pp_time)
4710{
20b7effb 4711 dSP; dTARGET;
cbdc8872 4712#ifdef BIG_TIME
4608196e 4713 XPUSHn( time(NULL) );
cbdc8872 4714#else
4608196e 4715 XPUSHi( time(NULL) );
cbdc8872 4716#endif
a0d0e21e
LW		 4717 RETURN;
4718}
4719
a0d0e21e
LW		 4720PP(pp_tms)
4721{
9cad6237 4722#ifdef HAS_TIMES
39644a26 4723 dSP;
25983af4 4724 struct tms timesbuf;
a0d0e21e 4725
25983af4
NC		 4726 EXTEND(SP, 4);
4727 (void)PerlProc_times(&timesbuf);
4728
4729 mPUSHn(((NV)timesbuf.tms_utime)/(NV)PL_clocktick);
82334630 4730 if (GIMME_V == G_ARRAY) {
25983af4
NC		 4731 mPUSHn(((NV)timesbuf.tms_stime)/(NV)PL_clocktick);
4732 mPUSHn(((NV)timesbuf.tms_cutime)/(NV)PL_clocktick);
4733 mPUSHn(((NV)timesbuf.tms_cstime)/(NV)PL_clocktick);
a0d0e21e
LW		 4734 }
4735 RETURN;
8d698507 4736#elif defined(PERL_MICRO)
2f42fcb0 4737 dSP;
6e449a3a 4738 mPUSHn(0.0);
2f42fcb0 4739 EXTEND(SP, 4);
82334630 4740 if (GIMME_V == G_ARRAY) {
6e449a3a
MHM		 4741 mPUSHn(0.0);
4742 mPUSHn(0.0);
4743 mPUSHn(0.0);
2f42fcb0
JH		 4744 }
4745 RETURN;
8d698507 4746#else
9cad6237 4747 DIE(aTHX_ "times not implemented");
55497cff 4748#endif /* HAS_TIMES */
a0d0e21e
LW		 4749}
4750
fc003d4b
MS		 4751/* The 32 bit int year limits the times we can represent to these
4752 boundaries with a few days wiggle room to account for time zone
4753 offsets
4754*/
4755/* Sat Jan 3 00:00:00 -2147481748 */
4756#define TIME_LOWER_BOUND -67768100567755200.0
4757/* Sun Dec 29 12:00:00 2147483647 */
4758#define TIME_UPPER_BOUND 67767976233316800.0
4759
b1c05ba5
DM		 4760
4761/* also used for: pp_localtime() */
4762
a0d0e21e
LW		 4763PP(pp_gmtime)
4764{
39644a26 4765 dSP;
a272e669 4766 Time64_T when;
806a119a
MS		 4767 struct TM tmbuf;
4768 struct TM *err;
a8cb0261 4769 const char *opname = PL_op->op_type == OP_LOCALTIME ? "localtime" : "gmtime";
27da23d5
JH		 4770 static const char * const dayname[] =
4771 {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
4772 static const char * const monname[] =
4773 {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
4774 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
a0d0e21e 4775
0163043a 4776 if (MAXARG < 1 || (!TOPs && ((void)POPs, 1))) {
a272e669
MS		 4777 time_t now;
4778 (void)time(&now);
4779 when = (Time64_T)now;
4780 }
7315c673 4781 else {
7eb4f9b7 4782 NV input = Perl_floor(POPn);
2b9215fd 4783 const bool pl_isnan = Perl_isnan(input);
8efababc 4784 when = (Time64_T)input;
2b9215fd 4785 if (UNLIKELY(pl_isnan || when != input)) {
dcbac5bb 4786 /* diag_listed_as: gmtime(%f) too large */
a2a5de95 4787 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
7eb4f9b7 4788 "%s(%.0" NVff ") too large", opname, input);
2b9215fd 4789 if (pl_isnan) {
d8bd3d82
FC		 4790 err = NULL;
4791 goto failed;
4792 }
7315c673
MS		 4793 }
4794 }
a0d0e21e 4795
fc003d4b 4796 if ( TIME_LOWER_BOUND > when ) {
dcbac5bb 4797 /* diag_listed_as: gmtime(%f) too small */
fc003d4b 4798 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
7eb4f9b7 4799 "%s(%.0" NVff ") too small", opname, when);
fc003d4b
MS		 4800 err = NULL;
4801 }
4802 else if( when > TIME_UPPER_BOUND ) {
dcbac5bb 4803 /* diag_listed_as: gmtime(%f) too small */
fc003d4b 4804 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
7eb4f9b7 4805 "%s(%.0" NVff ") too large", opname, when);
fc003d4b
MS		 4806 err = NULL;
4807 }
4808 else {
4809 if (PL_op->op_type == OP_LOCALTIME)
e27be216 4810 err = Perl_localtime64_r(&when, &tmbuf);
fc003d4b 4811 else
e27be216 4812 err = Perl_gmtime64_r(&when, &tmbuf);
fc003d4b 4813 }
a0d0e21e 4814
a2a5de95 4815 if (err == NULL) {
b35b96b6 4816 /* diag_listed_as: gmtime(%f) failed */
8efababc 4817 /* XXX %lld broken for quads */
d8bd3d82 4818 failed:
a2a5de95 4819 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
7eb4f9b7 4820 "%s(%.0" NVff ") failed", opname, when);
5b6366c2 4821 }
a0d0e21e 4822
82334630 4823 if (GIMME_V != G_ARRAY) { /* scalar context */
9a5ff6d9 4824 EXTEND(SP, 1);
a272e669 4825 if (err == NULL)
a0d0e21e 4826 RETPUSHUNDEF;
b35b96b6 4827 else {
d0a10fd8
FC		 4828 dTARGET;
4829 PUSHs(TARG);
147e3846 4830 Perl_sv_setpvf_mg(aTHX_ TARG, "%s %s %2d %02d:%02d:%02d %" IVdf,
b35b96b6
JH		 4831 dayname[tmbuf.tm_wday],
4832 monname[tmbuf.tm_mon],
4833 tmbuf.tm_mday,
4834 tmbuf.tm_hour,
4835 tmbuf.tm_min,
4836 tmbuf.tm_sec,
d0a10fd8 4837 (IV)tmbuf.tm_year + 1900);
b35b96b6 4838 }
a0d0e21e 4839 }
a272e669
MS		 4840 else { /* list context */
4841 if ( err == NULL )
4842 RETURN;
4843
9a5ff6d9
AB		 4844 EXTEND(SP, 9);
4845 EXTEND_MORTAL(9);
a272e669
MS		 4846 mPUSHi(tmbuf.tm_sec);
4847 mPUSHi(tmbuf.tm_min);
4848 mPUSHi(tmbuf.tm_hour);
4849 mPUSHi(tmbuf.tm_mday);
4850 mPUSHi(tmbuf.tm_mon);
7315c673 4851 mPUSHn(tmbuf.tm_year);
a272e669
MS		 4852 mPUSHi(tmbuf.tm_wday);
4853 mPUSHi(tmbuf.tm_yday);
4854 mPUSHi(tmbuf.tm_isdst);
a0d0e21e
LW		 4855 }
4856 RETURN;
4857}
4858
4859PP(pp_alarm)
4860{
9cad6237 4861#ifdef HAS_ALARM
20b7effb 4862 dSP; dTARGET;
add0dc91
JH		 4863 /* alarm() takes an unsigned int number of seconds, and return the
4864 * unsigned int number of seconds remaining in the previous alarm
4865 * (alarms don't stack). Therefore negative return values are not
4866 * possible. */
4867 int anum = POPi;
4868 if (anum < 0) {
4869 /* Note that while the C library function alarm() as such has
4870 * no errors defined (or in other words, properly behaving client
4871 * code shouldn't expect any), alarm() being obsoleted by
4872 * setitimer() and often being implemented in terms of
4873 * setitimer(), can fail. */
4874 /* diag_listed_as: %s() with negative argument */
4875 Perl_ck_warner_d(aTHX_ packWARN(WARN_MISC),
4876 "alarm() with negative argument");
4877 SETERRNO(EINVAL, LIB_INVARG);
4878 RETPUSHUNDEF;
4879 }
4880 else {
4881 unsigned int retval = alarm(anum);
4882 if ((int)retval < 0) /* Strictly speaking "cannot happen". */
4883 RETPUSHUNDEF;
4884 PUSHu(retval);
4885 RETURN;
4886 }
a0d0e21e 4887#else
0322a713 4888 DIE(aTHX_ PL_no_func, "alarm");
a0d0e21e
LW		 4889#endif
4890}
4891
4892PP(pp_sleep)
4893{
20b7effb 4894 dSP; dTARGET;
a0d0e21e
LW		 4895 Time_t lasttime;
4896 Time_t when;
4897
4898 (void)time(&lasttime);
0da4a804 4899 if (MAXARG < 1 || (!TOPs && !POPs))
76e3520e 4900 PerlProc_pause();
a0d0e21e 4901 else {
19742f39 4902 const I32 duration = POPi;
393bc9b3
JH		 4903 if (duration < 0) {
4904 /* diag_listed_as: %s() with negative argument */
4905 Perl_ck_warner_d(aTHX_ packWARN(WARN_MISC),
4906 "sleep() with negative argument");
4907 SETERRNO(EINVAL, LIB_INVARG);
725c44f9 4908 XPUSHs(&PL_sv_zero);
393bc9b3
JH		 4909 RETURN;
4910 } else {
4911 PerlProc_sleep((unsigned int)duration);
4912 }
a0d0e21e
LW		 4913 }
4914 (void)time(&when);
4915 XPUSHi(when - lasttime);
4916 RETURN;
4917}
4918
4919/* Shared memory. */
c9f7ac20 4920/* Merged with some message passing. */
a0d0e21e 4921
b1c05ba5
DM		 4922/* also used for: pp_msgrcv() pp_msgsnd() pp_semop() pp_shmread() */
4923
a0d0e21e
LW		 4924PP(pp_shmwrite)
4925{
4926#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
20b7effb 4927 dSP; dMARK; dTARGET;
c9f7ac20
NC		 4928 const int op_type = PL_op->op_type;
4929 I32 value;
a0d0e21e 4930
c9f7ac20
NC		 4931 switch (op_type) {
4932 case OP_MSGSND:
4933 value = (I32)(do_msgsnd(MARK, SP) >= 0);
4934 break;
4935 case OP_MSGRCV:
4936 value = (I32)(do_msgrcv(MARK, SP) >= 0);
4937 break;
ca563b4e
NC		 4938 case OP_SEMOP:
4939 value = (I32)(do_semop(MARK, SP) >= 0);
4940 break;
c9f7ac20
NC		 4941 default:
4942 value = (I32)(do_shmio(op_type, MARK, SP) >= 0);
4943 break;
4944 }
a0d0e21e 4945
a0d0e21e
LW		 4946 SP = MARK;
4947 PUSHi(value);
4948 RETURN;
4949#else
897d3989 4950 return Perl_pp_semget(aTHX);
a0d0e21e
LW		 4951#endif
4952}
4953
4954/* Semaphores. */
4955
b1c05ba5
DM		 4956/* also used for: pp_msgget() pp_shmget() */
4957
a0d0e21e
LW		 4958PP(pp_semget)
4959{
4960#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
20b7effb 4961 dSP; dMARK; dTARGET;
0bcc34c2 4962 const int anum = do_ipcget(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 4963 SP = MARK;
4964 if (anum == -1)
4965 RETPUSHUNDEF;
4966 PUSHi(anum);
4967 RETURN;
4968#else
cea2e8a9 4969 DIE(aTHX_ "System V IPC is not implemented on this machine");
a0d0e21e
LW		 4970#endif
4971}
4972
b1c05ba5
DM		 4973/* also used for: pp_msgctl() pp_shmctl() */
4974
a0d0e21e
LW		 4975PP(pp_semctl)
4976{
4977#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
20b7effb 4978 dSP; dMARK; dTARGET;
0bcc34c2 4979 const int anum = do_ipcctl(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 4980 SP = MARK;
4981 if (anum == -1)
fa367bcb 4982 RETPUSHUNDEF;
a0d0e21e
LW		 4983 if (anum != 0) {
4984 PUSHi(anum);
4985 }
4986 else {
8903cb82 4987 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e
LW		 4988 }
4989 RETURN;
4990#else
897d3989 4991 return Perl_pp_semget(aTHX);
a0d0e21e
LW		 4992#endif
4993}
4994
5cdc4e88
NC		 4995/* I can't const this further without getting warnings about the types of
4996 various arrays passed in from structures. */
4997static SV *
4998S_space_join_names_mortal(pTHX_ char *const *array)
4999{
7c58897d 5000 SV *target;
5cdc4e88 5001
d35c1b5e 5002 if (array && *array) {
84bafc02 5003 target = newSVpvs_flags("", SVs_TEMP);
5cdc4e88
NC		 5004 while (1) {
5005 sv_catpv(target, *array);
5006 if (!*++array)
5007 break;
5008 sv_catpvs(target, " ");
5009 }
7c58897d
NC		 5010 } else {
5011 target = sv_mortalcopy(&PL_sv_no);
5cdc4e88
NC		 5012 }
5013 return target;
5014}
5015
a0d0e21e
LW		 5016/* Get system info. */
5017
b1c05ba5
DM		 5018/* also used for: pp_ghbyaddr() pp_ghbyname() */
5019
a0d0e21e
LW		 5020PP(pp_ghostent)
5021{
693762b4 5022#if defined(HAS_GETHOSTBYNAME) || defined(HAS_GETHOSTBYADDR) || defined(HAS_GETHOSTENT)
20b7effb 5023 dSP;
533c011a 5024 I32 which = PL_op->op_type;
eb578fdb
KW		 5025 char **elem;
5026 SV *sv;
dc45a647 5027#ifndef HAS_GETHOST_PROTOS /* XXX Do we need individual probes? */
1d88b533
JH		 5028 struct hostent *gethostbyaddr(Netdb_host_t, Netdb_hlen_t, int);
5029 struct hostent *gethostbyname(Netdb_name_t);
5030 struct hostent *gethostent(void);
a0d0e21e 5031#endif
07822e36 5032 struct hostent *hent = NULL;
a0d0e21e
LW		 5033 unsigned long len;
5034
5035 EXTEND(SP, 10);
edd309b7 5036 if (which == OP_GHBYNAME) {
dc45a647 5037#ifdef HAS_GETHOSTBYNAME
0bcc34c2 5038 const char* const name = POPpbytex;
edd309b7 5039 hent = PerlSock_gethostbyname(name);
dc45a647 5040#else
cea2e8a9 5041 DIE(aTHX_ PL_no_sock_func, "gethostbyname");
dc45a647 5042#endif
edd309b7 5043 }
a0d0e21e 5044 else if (which == OP_GHBYADDR) {
dc45a647 5045#ifdef HAS_GETHOSTBYADDR
0bcc34c2
AL		 5046 const int addrtype = POPi;
5047 SV * const addrsv = POPs;
a0d0e21e 5048 STRLEN addrlen;
48fc4736 5049 const char *addr = (char *)SvPVbyte(addrsv, addrlen);
a0d0e21e 5050
48fc4736 5051 hent = PerlSock_gethostbyaddr(addr, (Netdb_hlen_t) addrlen, addrtype);
dc45a647 5052#else
cea2e8a9 5053 DIE(aTHX_ PL_no_sock_func, "gethostbyaddr");
dc45a647 5054#endif
a0d0e21e
LW		 5055 }
5056 else
5057#ifdef HAS_GETHOSTENT
6ad3d225 5058 hent = PerlSock_gethostent();
a0d0e21e 5059#else
cea2e8a9 5060 DIE(aTHX_ PL_no_sock_func, "gethostent");
a0d0e21e
LW		 5061#endif
5062
5063#ifdef HOST_NOT_FOUND
10bc17b6
JH		 5064 if (!hent) {
5065#ifdef USE_REENTRANT_API
5066# ifdef USE_GETHOSTENT_ERRNO
5067 h_errno = PL_reentrant_buffer->_gethostent_errno;
5068# endif
5069#endif
37038d91 5070 STATUS_UNIX_SET(h_errno);
10bc17b6 5071 }
a0d0e21e
LW		 5072#endif
5073
82334630 5074 if (GIMME_V != G_ARRAY) {
a0d0e21e
LW		 5075 PUSHs(sv = sv_newmortal());
5076 if (hent) {
5077 if (which == OP_GHBYNAME) {
fd0af264 5078 if (hent->h_addr)
5079 sv_setpvn(sv, hent->h_addr, hent->h_length);
a0d0e21e
LW		 5080 }
5081 else
5082 sv_setpv(sv, (char*)hent->h_name);
5083 }
5084 RETURN;
5085 }
5086
5087 if (hent) {
6e449a3a 5088 mPUSHs(newSVpv((char*)hent->h_name, 0));
931e0695 5089 PUSHs(space_join_names_mortal(hent->h_aliases));
6e449a3a 5090 mPUSHi(hent->h_addrtype);
a0d0e21e 5091 len = hent->h_length;
6e449a3a 5092 mPUSHi(len);
a0d0e21e
LW		 5093#ifdef h_addr
5094 for (elem = hent->h_addr_list; elem && *elem; elem++) {
6e449a3a 5095 mXPUSHp(*elem, len);
a0d0e21e
LW		 5096 }
5097#else
fd0af264 5098 if (hent->h_addr)
22f1178f 5099 mPUSHp(hent->h_addr, len);
7c58897d
NC		 5100 else
5101 PUSHs(sv_mortalcopy(&PL_sv_no));
a0d0e21e
LW		 5102#endif /* h_addr */
5103 }
5104 RETURN;
5105#else
7844cc62 5106 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 5107#endif
5108}
5109
b1c05ba5
DM		 5110/* also used for: pp_gnbyaddr() pp_gnbyname() */
5111
a0d0e21e
LW		 5112PP(pp_gnetent)
5113{
693762b4 5114#if defined(HAS_GETNETBYNAME) || defined(HAS_GETNETBYADDR) || defined(HAS_GETNETENT)
20b7effb 5115 dSP;
533c011a 5116 I32 which = PL_op->op_type;
eb578fdb 5117 SV *sv;
dc45a647 5118#ifndef HAS_GETNET_PROTOS /* XXX Do we need individual probes? */
1d88b533
JH		 5119 struct netent *getnetbyaddr(Netdb_net_t, int);
5120 struct netent *getnetbyname(Netdb_name_t);
5121 struct netent *getnetent(void);
8ac85365 5122#endif
a0d0e21e
LW		 5123 struct netent *nent;
5124
edd309b7 5125 if (which == OP_GNBYNAME){
dc45a647 5126#ifdef HAS_GETNETBYNAME
0bcc34c2 5127 const char * const name = POPpbytex;
edd309b7 5128 nent = PerlSock_getnetbyname(name);
dc45a647 5129#else
cea2e8a9 5130 DIE(aTHX_ PL_no_sock_func, "getnetbyname");
dc45a647 5131#endif
edd309b7 5132 }
a0d0e21e 5133 else if (which == OP_GNBYADDR) {
dc45a647 5134#ifdef HAS_GETNETBYADDR
0bcc34c2
AL		 5135 const int addrtype = POPi;
5136 const Netdb_net_t addr = (Netdb_net_t) (U32)POPu;
76e3520e 5137 nent = PerlSock_getnetbyaddr(addr, addrtype);
dc45a647 5138#else
cea2e8a9 5139 DIE(aTHX_ PL_no_sock_func, "getnetbyaddr");
dc45a647 5140#endif
a0d0e21e
LW		 5141 }
5142 else
dc45a647 5143#ifdef HAS_GETNETENT
76e3520e 5144 nent = PerlSock_getnetent();
dc45a647 5145#else
cea2e8a9 5146 DIE(aTHX_ PL_no_sock_func, "getnetent");
dc45a647 5147#endif
a0d0e21e 5148
10bc17b6
JH		 5149#ifdef HOST_NOT_FOUND
5150 if (!nent) {
5151#ifdef USE_REENTRANT_API
5152# ifdef USE_GETNETENT_ERRNO
5153 h_errno = PL_reentrant_buffer->_getnetent_errno;
5154# endif
5155#endif
37038d91 5156 STATUS_UNIX_SET(h_errno);
10bc17b6
JH		 5157 }
5158#endif
5159
a0d0e21e 5160 EXTEND(SP, 4);
82334630 5161 if (GIMME_V != G_ARRAY) {
a0d0e21e
LW		 5162 PUSHs(sv = sv_newmortal());
5163 if (nent) {
5164 if (which == OP_GNBYNAME)
1e422769 5165 sv_setiv(sv, (IV)nent->n_net);
a0d0e21e
LW		 5166 else
5167 sv_setpv(sv, nent->n_name);
5168 }
5169 RETURN;
5170 }
5171
5172 if (nent) {
6e449a3a 5173 mPUSHs(newSVpv(nent->n_name, 0));
931e0695 5174 PUSHs(space_join_names_mortal(nent->n_aliases));
6e449a3a
MHM		 5175 mPUSHi(nent->n_addrtype);
5176 mPUSHi(nent->n_net);
a0d0e21e
LW		 5177 }
5178
5179 RETURN;
5180#else
7844cc62 5181 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 5182#endif
5183}
5184
b1c05ba5
DM		 5185
5186/* also used for: pp_gpbyname() pp_gpbynumber() */
5187
a0d0e21e
LW		 5188PP(pp_gprotoent)
5189{
693762b4 5190#if defined(HAS_GETPROTOBYNAME) || defined(HAS_GETPROTOBYNUMBER) || defined(HAS_GETPROTOENT)
20b7effb 5191 dSP;
533c011a 5192 I32 which = PL_op->op_type;
eb578fdb 5193 SV *sv;
dc45a647 5194#ifndef HAS_GETPROTO_PROTOS /* XXX Do we need individual probes? */
1d88b533
JH		 5195 struct protoent *getprotobyname(Netdb_name_t);
5196 struct protoent *getprotobynumber(int);
5197 struct protoent *getprotoent(void);
8ac85365 5198#endif
a0d0e21e
LW		 5199 struct protoent *pent;
5200
edd309b7 5201 if (which == OP_GPBYNAME) {
e5c9fcd0 5202#ifdef HAS_GETPROTOBYNAME
0bcc34c2 5203 const char* const name = POPpbytex;
edd309b7 5204 pent = PerlSock_getprotobyname(name);
e5c9fcd0 5205#else
cea2e8a9 5206 DIE(aTHX_ PL_no_sock_func, "getprotobyname");
e5c9fcd0 5207#endif
edd309b7
JH		 5208 }
5209 else if (which == OP_GPBYNUMBER) {
e5c9fcd0 5210#ifdef HAS_GETPROTOBYNUMBER
0bcc34c2 5211 const int number = POPi;
edd309b7 5212 pent = PerlSock_getprotobynumber(number);
e5c9fcd0 5213#else
edd309b7 5214 DIE(aTHX_ PL_no_sock_func, "getprotobynumber");
e5c9fcd0 5215#endif
edd309b7 5216 }
a0d0e21e 5217 else
e5c9fcd0 5218#ifdef HAS_GETPROTOENT
6ad3d225 5219 pent = PerlSock_getprotoent();
e5c9fcd0 5220#else
cea2e8a9 5221 DIE(aTHX_ PL_no_sock_func, "getprotoent");
e5c9fcd0 5222#endif
a0d0e21e
LW		 5223
5224 EXTEND(SP, 3);
82334630 5225 if (GIMME_V != G_ARRAY) {
a0d0e21e
LW		 5226 PUSHs(sv = sv_newmortal());
5227 if (pent) {
5228 if (which == OP_GPBYNAME)
1e422769 5229 sv_setiv(sv, (IV)pent->p_proto);
a0d0e21e
LW		 5230 else
5231 sv_setpv(sv, pent->p_name);
5232 }
5233 RETURN;
5234 }
5235
5236 if (pent) {
6e449a3a 5237 mPUSHs(newSVpv(pent->p_name, 0));
931e0695 5238 PUSHs(space_join_names_mortal(pent->p_aliases));
6e449a3a 5239 mPUSHi(pent->p_proto);
a0d0e21e
LW		 5240 }
5241
5242 RETURN;
5243#else
7844cc62 5244 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 5245#endif
5246}
5247
b1c05ba5
DM		 5248
5249/* also used for: pp_gsbyname() pp_gsbyport() */
5250
a0d0e21e
LW		 5251PP(pp_gservent)
5252{
693762b4 5253#if defined(HAS_GETSERVBYNAME) || defined(HAS_GETSERVBYPORT) || defined(HAS_GETSERVENT)
20b7effb 5254 dSP;
533c011a 5255 I32 which = PL_op->op_type;
eb578fdb 5256 SV *sv;
dc45a647 5257#ifndef HAS_GETSERV_PROTOS /* XXX Do we need individual probes? */
1d88b533
JH		 5258 struct servent *getservbyname(Netdb_name_t, Netdb_name_t);
5259 struct servent *getservbyport(int, Netdb_name_t);
5260 struct servent *getservent(void);
8ac85365 5261#endif
a0d0e21e
LW		 5262 struct servent *sent;
5263
5264 if (which == OP_GSBYNAME) {
dc45a647 5265#ifdef HAS_GETSERVBYNAME
0bcc34c2
AL		 5266 const char * const proto = POPpbytex;
5267 const char * const name = POPpbytex;
bd61b366 5268 sent = PerlSock_getservbyname(name, (proto && !*proto) ? NULL : proto);
dc45a647 5269#else
cea2e8a9 5270 DIE(aTHX_ PL_no_sock_func, "getservbyname");
dc45a647 5271#endif
a0d0e21e
LW		 5272 }
5273 else if (which == OP_GSBYPORT) {
dc45a647 5274#ifdef HAS_GETSERVBYPORT
0bcc34c2 5275 const char * const proto = POPpbytex;
eb160463 5276 unsigned short port = (unsigned short)POPu;
6ad3d225 5277 port = PerlSock_htons(port);
bd61b366 5278 sent = PerlSock_getservbyport(port, (proto && !*proto) ? NULL : proto);
dc45a647 5279#else
cea2e8a9 5280 DIE(aTHX_ PL_no_sock_func, "getservbyport");
dc45a647 5281#endif
a0d0e21e
LW		 5282 }
5283 else
e5c9fcd0 5284#ifdef HAS_GETSERVENT
6ad3d225 5285 sent = PerlSock_getservent();
e5c9fcd0 5286#else
cea2e8a9 5287 DIE(aTHX_ PL_no_sock_func, "getservent");
e5c9fcd0 5288#endif
a0d0e21e
LW		 5289
5290 EXTEND(SP, 4);
82334630 5291 if (GIMME_V != G_ARRAY) {
a0d0e21e
LW		 5292 PUSHs(sv = sv_newmortal());
5293 if (sent) {
5294 if (which == OP_GSBYNAME) {
6ad3d225 5295 sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
a0d0e21e
LW		 5296 }
5297 else
5298 sv_setpv(sv, sent->s_name);
5299 }
5300 RETURN;
5301 }
5302
5303 if (sent) {
6e449a3a 5304 mPUSHs(newSVpv(sent->s_name, 0));
931e0695 5305 PUSHs(space_join_names_mortal(sent->s_aliases));
6e449a3a 5306 mPUSHi(PerlSock_ntohs(sent->s_port));
6e449a3a 5307 mPUSHs(newSVpv(sent->s_proto, 0));
a0d0e21e
LW		 5308 }
5309
5310 RETURN;
5311#else
7844cc62 5312 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 5313#endif
5314}
5315
b1c05ba5
DM		 5316
5317/* also used for: pp_snetent() pp_sprotoent() pp_sservent() */
5318
a0d0e21e
LW		 5319PP(pp_shostent)
5320{
20b7effb 5321 dSP;
396166e1
NC		 5322 const int stayopen = TOPi;
5323 switch(PL_op->op_type) {
5324 case OP_SHOSTENT:
5325#ifdef HAS_SETHOSTENT
5326 PerlSock_sethostent(stayopen);
a0d0e21e 5327#else
396166e1 5328 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e 5329#endif
396166e1 5330 break;
693762b4 5331#ifdef HAS_SETNETENT
396166e1
NC		 5332 case OP_SNETENT:
5333 PerlSock_setnetent(stayopen);
a0d0e21e 5334#else
396166e1 5335 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e 5336#endif
396166e1
NC		 5337 break;
5338 case OP_SPROTOENT:
693762b4 5339#ifdef HAS_SETPROTOENT
396166e1 5340 PerlSock_setprotoent(stayopen);
a0d0e21e 5341#else
396166e1 5342 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e 5343#endif
396166e1
NC		 5344 break;
5345 case OP_SSERVENT:
693762b4 5346#ifdef HAS_SETSERVENT
396166e1 5347 PerlSock_setservent(stayopen);
a0d0e21e 5348#else
396166e1 5349 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e 5350#endif
396166e1
NC		 5351 break;
5352 }
5353 RETSETYES;
a0d0e21e
LW		 5354}
5355
b1c05ba5
DM		 5356
5357/* also used for: pp_egrent() pp_enetent() pp_eprotoent() pp_epwent()
5358 * pp_eservent() pp_sgrent() pp_spwent() */
5359
a0d0e21e
LW		 5360PP(pp_ehostent)
5361{
20b7effb 5362 dSP;
d8ef1fcd
NC		 5363 switch(PL_op->op_type) {
5364 case OP_EHOSTENT:
5365#ifdef HAS_ENDHOSTENT
5366 PerlSock_endhostent();
a0d0e21e 5367#else
d8ef1fcd 5368 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e 5369#endif
d8ef1fcd
NC		 5370 break;
5371 case OP_ENETENT:
693762b4 5372#ifdef HAS_ENDNETENT
d8ef1fcd 5373 PerlSock_endnetent();
a0d0e21e 5374#else
d8ef1fcd 5375 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e 5376#endif
d8ef1fcd
NC		 5377 break;
5378 case OP_EPROTOENT:
693762b4 5379#ifdef HAS_ENDPROTOENT
d8ef1fcd 5380 PerlSock_endprotoent();
a0d0e21e 5381#else
d8ef1fcd 5382 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e 5383#endif
d8ef1fcd
NC		 5384 break;
5385 case OP_ESERVENT:
693762b4 5386#ifdef HAS_ENDSERVENT
d8ef1fcd 5387 PerlSock_endservent();
a0d0e21e 5388#else
d8ef1fcd 5389 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e 5390#endif
d8ef1fcd 5391 break;
720d5dbf
NC		 5392 case OP_SGRENT:
5393#if defined(HAS_GROUP) && defined(HAS_SETGRENT)
5394 setgrent();
5395#else
5396 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5397#endif
5398 break;
5399 case OP_EGRENT:
5400#if defined(HAS_GROUP) && defined(HAS_ENDGRENT)
5401 endgrent();
5402#else
5403 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5404#endif
5405 break;
5406 case OP_SPWENT:
5407#if defined(HAS_PASSWD) && defined(HAS_SETPWENT)
5408 setpwent();
5409#else
5410 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5411#endif
5412 break;
5413 case OP_EPWENT:
5414#if defined(HAS_PASSWD) && defined(HAS_ENDPWENT)
5415 endpwent();
5416#else
5417 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5418#endif
5419 break;
d8ef1fcd
NC		 5420 }
5421 EXTEND(SP,1);
5422 RETPUSHYES;
a0d0e21e
LW		 5423}
5424
b1c05ba5
DM		 5425
5426/* also used for: pp_gpwnam() pp_gpwuid() */
5427
a0d0e21e
LW		 5428PP(pp_gpwent)
5429{
0994c4d0 5430#ifdef HAS_PASSWD
20b7effb 5431 dSP;
533c011a 5432 I32 which = PL_op->op_type;
eb578fdb 5433 SV *sv;
e3aefe8d 5434 struct passwd *pwent = NULL;
301e8125 5435 /*
bcf53261
JH		 5436 * We currently support only the SysV getsp* shadow password interface.
5437 * The interface is declared in <shadow.h> and often one needs to link
5438 * with -lsecurity or some such.
5439 * This interface is used at least by Solaris, HP-UX, IRIX, and Linux.
5440 * (and SCO?)
5441 *
5442 * AIX getpwnam() is clever enough to return the encrypted password
5443 * only if the caller (euid?) is root.
5444 *
e549f1c5 5445 * There are at least three other shadow password APIs. Many platforms
bcf53261
JH		 5446 * seem to contain more than one interface for accessing the shadow
5447 * password databases, possibly for compatibility reasons.
3813c136 5448 * The getsp*() is by far he simplest one, the other two interfaces
bcf53261
JH		 5449 * are much more complicated, but also very similar to each other.
5450 *
5451 * <sys/types.h>
5452 * <sys/security.h>
5453 * <prot.h>
5454 * struct pr_passwd *getprpw*();
5455 * The password is in
3813c136
JH		 5456 * char getprpw*(...).ufld.fd_encrypt[]
5457 * Mention HAS_GETPRPWNAM here so that Configure probes for it.
bcf53261
JH		 5458 *
5459 * <sys/types.h>
5460 * <sys/security.h>
5461 * <prot.h>
5462 * struct es_passwd *getespw*();
5463 * The password is in
5464 * char *(getespw*(...).ufld.fd_encrypt)
3813c136 5465 * Mention HAS_GETESPWNAM here so that Configure probes for it.
bcf53261 5466 *
e1920a95 5467 * <userpw.h> (AIX)
e549f1c5
JH		 5468 * struct userpw *getuserpw();
5469 * The password is in
5470 * char *(getuserpw(...)).spw_upw_passwd
5471 * (but the de facto standard getpwnam() should work okay)
5472 *
3813c136 5473 * Mention I_PROT here so that Configure probes for it.
bcf53261
JH		 5474 *
5475 * In HP-UX for getprpw*() the manual page claims that one should include
5476 * <hpsecurity.h> instead of <sys/security.h>, but that is not needed
5477 * if one includes <shadow.h> as that includes <hpsecurity.h>,
5478 * and pp_sys.c already includes <shadow.h> if there is such.
3813c136
JH		 5479 *
5480 * Note that <sys/security.h> is already probed for, but currently
5481 * it is only included in special cases.
301e8125 5482 *
bcf53261
JH		 5483 * In Digital UNIX/Tru64 if using the getespw*() (which seems to be
5484 * be preferred interface, even though also the getprpw*() interface
5485 * is available) one needs to link with -lsecurity -ldb -laud -lm.
3813c136
JH		 5486 * One also needs to call set_auth_parameters() in main() before
5487 * doing anything else, whether one is using getespw*() or getprpw*().
5488 *
5489 * Note that accessing the shadow databases can be magnitudes
5490 * slower than accessing the standard databases.
bcf53261
JH		 5491 *
5492 * --jhi
5493 */
a0d0e21e 5494
9e5f0c48
JH		 5495# if defined(__CYGWIN__) && defined(USE_REENTRANT_API)
5496 /* Cygwin 1.5.3-1 has buggy getpwnam_r() and getpwuid_r():
5497 * the pw_comment is left uninitialized. */
5498 PL_reentrant_buffer->_pwent_struct.pw_comment = NULL;
5499# endif
5500
e3aefe8d
JH		 5501 switch (which) {
5502 case OP_GPWNAM:
edd309b7 5503 {
0bcc34c2 5504 const char* const name = POPpbytex;
edd309b7
JH		 5505 pwent = getpwnam(name);
5506 }
5507 break;
e3aefe8d 5508 case OP_GPWUID:
edd309b7
JH		 5509 {
5510 Uid_t uid = POPi;
5511 pwent = getpwuid(uid);
5512 }
e3aefe8d
JH		 5513 break;
5514 case OP_GPWENT:
1883634f 5515# ifdef HAS_GETPWENT
e3aefe8d 5516 pwent = getpwent();
faea9016
IRC		 5517#ifdef POSIX_BC /* In some cases pw_passwd has invalid addresses */
5518 if (pwent) pwent = getpwnam(pwent->pw_name);
5519#endif
1883634f 5520# else
a45d1c96 5521 DIE(aTHX_ PL_no_func, "getpwent");
1883634f 5522# endif
e3aefe8d
JH		 5523 break;
5524 }
8c0bfa08 5525
a0d0e21e 5526 EXTEND(SP, 10);
82334630 5527 if (GIMME_V != G_ARRAY) {
a0d0e21e
LW		 5528 PUSHs(sv = sv_newmortal());
5529 if (pwent) {
5530 if (which == OP_GPWNAM)
dfff4baf 5531 sv_setuid(sv, pwent->pw_uid);
a0d0e21e
LW		 5532 else
5533 sv_setpv(sv, pwent->pw_name);
5534 }
5535 RETURN;
5536 }
5537
5538 if (pwent) {
6e449a3a 5539 mPUSHs(newSVpv(pwent->pw_name, 0));
6ee623d5 5540
6e449a3a
MHM		 5541 sv = newSViv(0);
5542 mPUSHs(sv);
3813c136
JH		 5543 /* If we have getspnam(), we try to dig up the shadow
5544 * password. If we are underprivileged, the shadow
5545 * interface will set the errno to EACCES or similar,
5546 * and return a null pointer. If this happens, we will
5547 * use the dummy password (usually "*" or "x") from the
5548 * standard password database.
5549 *
5550 * In theory we could skip the shadow call completely
5551 * if euid != 0 but in practice we cannot know which
5552 * security measures are guarding the shadow databases
5553 * on a random platform.
5554 *
5555 * Resist the urge to use additional shadow interfaces.
5556 * Divert the urge to writing an extension instead.
5557 *
5558 * --jhi */
e549f1c5
JH		 5559 /* Some AIX setups falsely(?) detect some getspnam(), which
5560 * has a different API than the Solaris/IRIX one. */
5561# if defined(HAS_GETSPNAM) && !defined(_AIX)
3813c136 5562 {
4ee39169 5563 dSAVE_ERRNO;
0bcc34c2
AL		 5564 const struct spwd * const spwent = getspnam(pwent->pw_name);
5565 /* Save and restore errno so that
3813c136 5566 * underprivileged attempts seem
486ec47a 5567 * to have never made the unsuccessful
3813c136 5568 * attempt to retrieve the shadow password. */
4ee39169 5569 RESTORE_ERRNO;
3813c136
JH		 5570 if (spwent && spwent->sp_pwdp)
5571 sv_setpv(sv, spwent->sp_pwdp);
5572 }
f1066039 5573# endif
e020c87d 5574# ifdef PWPASSWD
3813c136
JH		 5575 if (!SvPOK(sv)) /* Use the standard password, then. */
5576 sv_setpv(sv, pwent->pw_passwd);
e020c87d 5577# endif
3813c136 5578
3813c136
JH		 5579 /* passwd is tainted because user himself can diddle with it.
5580 * admittedly not much and in a very limited way, but nevertheless. */
2959b6e3 5581 SvTAINTED_on(sv);
6ee623d5 5582
dfff4baf
BF		 5583 sv_setuid(PUSHmortal, pwent->pw_uid);
5584 sv_setgid(PUSHmortal, pwent->pw_gid);
6ee623d5 5585
3813c136
JH		 5586 /* pw_change, pw_quota, and pw_age are mutually exclusive--
5587 * because of the poor interface of the Perl getpw*(),
5588 * not because there's some standard/convention saying so.
5589 * A better interface would have been to return a hash,
5590 * but we are accursed by our history, alas. --jhi. */
1883634f 5591# ifdef PWCHANGE
6e449a3a 5592 mPUSHi(pwent->pw_change);
8d698507 5593# elif defined(PWQUOTA)
6e449a3a 5594 mPUSHi(pwent->pw_quota);
8d698507 5595# elif defined(PWAGE)
6e449a3a 5596 mPUSHs(newSVpv(pwent->pw_age, 0));
8d698507 5597# else
7c58897d
NC		 5598 /* I think that you can never get this compiled, but just in case. */
5599 PUSHs(sv_mortalcopy(&PL_sv_no));
6ee623d5 5600# endif
6ee623d5 5601
3813c136
JH		 5602 /* pw_class and pw_comment are mutually exclusive--.
5603 * see the above note for pw_change, pw_quota, and pw_age. */
1883634f 5604# ifdef PWCLASS
6e449a3a 5605 mPUSHs(newSVpv(pwent->pw_class, 0));
8d698507 5606# elif defined(PWCOMMENT)
6e449a3a 5607 mPUSHs(newSVpv(pwent->pw_comment, 0));
8d698507 5608# else
7c58897d
NC		 5609 /* I think that you can never get this compiled, but just in case. */
5610 PUSHs(sv_mortalcopy(&PL_sv_no));
6ee623d5 5611# endif
6ee623d5 5612
1883634f 5613# ifdef PWGECOS
7c58897d
NC		 5614 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_gecos, 0)));
5615# else
c4c533cb 5616 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
1883634f 5617# endif
d2719217 5618 /* pw_gecos is tainted because user himself can diddle with it. */
fb73857a 5619 SvTAINTED_on(sv);
6ee623d5 5620
6e449a3a 5621 mPUSHs(newSVpv(pwent->pw_dir, 0));
6ee623d5 5622
7c58897d 5623 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_shell, 0)));
4602f195
JH		 5624 /* pw_shell is tainted because user himself can diddle with it. */
5625 SvTAINTED_on(sv);
6ee623d5 5626
1883634f 5627# ifdef PWEXPIRE
6e449a3a 5628 mPUSHi(pwent->pw_expire);
1883634f 5629# endif
a0d0e21e
LW		 5630 }
5631 RETURN;
5632#else
af51a00e 5633 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 5634#endif
5635}
5636
b1c05ba5
DM		 5637
5638/* also used for: pp_ggrgid() pp_ggrnam() */
5639
a0d0e21e
LW		 5640PP(pp_ggrent)
5641{
0994c4d0 5642#ifdef HAS_GROUP
20b7effb 5643 dSP;
6136c704
AL		 5644 const I32 which = PL_op->op_type;
5645 const struct group *grent;
a0d0e21e 5646
edd309b7 5647 if (which == OP_GGRNAM) {
0bcc34c2 5648 const char* const name = POPpbytex;
6136c704 5649 grent = (const struct group *)getgrnam(name);
edd309b7
JH		 5650 }
5651 else if (which == OP_GGRGID) {
ee17bffd
JH		 5652#if Gid_t_sign == 1
5653 const Gid_t gid = POPu;
5654#elif Gid_t_sign == -1
0bcc34c2 5655 const Gid_t gid = POPi;
ee17bffd
JH		 5656#else
5657# error "Unexpected Gid_t_sign"
5658#endif
6136c704 5659 grent = (const struct group *)getgrgid(gid);
edd309b7 5660 }
a0d0e21e 5661 else
0994c4d0 5662#ifdef HAS_GETGRENT
a0d0e21e 5663 grent = (struct group *)getgrent();
0994c4d0
JH		 5664#else
5665 DIE(aTHX_ PL_no_func, "getgrent");
5666#endif
a0d0e21e
LW		 5667
5668 EXTEND(SP, 4);
82334630 5669 if (GIMME_V != G_ARRAY) {
6136c704
AL		 5670 SV * const sv = sv_newmortal();
5671
5672 PUSHs(sv);
a0d0e21e
LW		 5673 if (grent) {
5674 if (which == OP_GGRNAM)
dfff4baf 5675 sv_setgid(sv, grent->gr_gid);
a0d0e21e
LW		 5676 else
5677 sv_setpv(sv, grent->gr_name);
5678 }
5679 RETURN;
5680 }
5681
5682 if (grent) {
6e449a3a 5683 mPUSHs(newSVpv(grent->gr_name, 0));
28e8609d 5684
28e8609d 5685#ifdef GRPASSWD
6e449a3a 5686 mPUSHs(newSVpv(grent->gr_passwd, 0));
7c58897d
NC		 5687#else
5688 PUSHs(sv_mortalcopy(&PL_sv_no));
28e8609d
JH		 5689#endif
5690
dfff4baf 5691 sv_setgid(PUSHmortal, grent->gr_gid);
28e8609d 5692
5b56e7c5 5693#if !(defined(_CRAYMPP) && defined(USE_REENTRANT_API))
3d7e8424
JH		 5694 /* In UNICOS/mk (_CRAYMPP) the multithreading
5695 * versions (getgrnam_r, getgrgid_r)
5696 * seem to return an illegal pointer
5697 * as the group members list, gr_mem.
5698 * getgrent() doesn't even have a _r version
5699 * but the gr_mem is poisonous anyway.
5700 * So yes, you cannot get the list of group
5701 * members if building multithreaded in UNICOS/mk. */
931e0695 5702 PUSHs(space_join_names_mortal(grent->gr_mem));
3d7e8424 5703#endif
a0d0e21e
LW		 5704 }
5705
5706 RETURN;
5707#else
af51a00e 5708 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 5709#endif
5710}
5711
a0d0e21e
LW		 5712PP(pp_getlogin)
5713{
a0d0e21e 5714#ifdef HAS_GETLOGIN
20b7effb 5715 dSP; dTARGET;
a0d0e21e
LW		 5716 char *tmps;
5717 EXTEND(SP, 1);
76e3520e 5718 if (!(tmps = PerlProc_getlogin()))
a0d0e21e 5719 RETPUSHUNDEF;
bee8aa44
NC		 5720 sv_setpv_mg(TARG, tmps);
5721 PUSHs(TARG);
a0d0e21e
LW		 5722 RETURN;
5723#else
cea2e8a9 5724 DIE(aTHX_ PL_no_func, "getlogin");
a0d0e21e
LW		 5725#endif
5726}
5727
5728/* Miscellaneous. */
5729
5730PP(pp_syscall)
5731{
d2719217 5732#ifdef HAS_SYSCALL
20b7effb 5733 dSP; dMARK; dORIGMARK; dTARGET;
eb578fdb 5734 I32 items = SP - MARK;
a0d0e21e 5735 unsigned long a[20];
eb578fdb 5736 I32 i = 0;
f9344c91 5737 IV retval = -1;
a0d0e21e 5738
284167a5 5739 if (TAINTING_get) {
a0d0e21e 5740 while (++MARK <= SP) {
bbce6d69 5741 if (SvTAINTED(*MARK)) {
5742 TAINT;
5743 break;
5744 }
a0d0e21e
LW		 5745 }
5746 MARK = ORIGMARK;
5747 TAINT_PROPER("syscall");
5748 }
5749
5750 /* This probably won't work on machines where sizeof(long) != sizeof(int)
5751 * or where sizeof(long) != sizeof(char*). But such machines will
5752 * not likely have syscall implemented either, so who cares?
5753 */
5754 while (++MARK <= SP) {
5755 if (SvNIOK(*MARK) || !i)
5756 a[i++] = SvIV(*MARK);
3280af22 5757 else if (*MARK == &PL_sv_undef)
748a9306 5758 a[i++] = 0;
301e8125 5759 else
8b6b16e7 5760 a[i++] = (unsigned long)SvPV_force_nolen(*MARK);
a0d0e21e
LW		 5761 if (i > 15)
5762 break;
5763 }
5764 switch (items) {
5765 default:
cea2e8a9 5766 DIE(aTHX_ "Too many args to syscall");
a0d0e21e 5767 case 0:
cea2e8a9 5768 DIE(aTHX_ "Too few args to syscall");
a0d0e21e
LW		 5769 case 1:
5770 retval = syscall(a[0]);
5771 break;
5772 case 2:
5773 retval = syscall(a[0],a[1]);
5774 break;
5775 case 3:
5776 retval = syscall(a[0],a[1],a[2]);
5777 break;
5778 case 4:
5779 retval = syscall(a[0],a[1],a[2],a[3]);
5780 break;
5781 case 5:
5782 retval = syscall(a[0],a[1],a[2],a[3],a[4]);
5783 break;
5784 case 6:
5785 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5]);
5786 break;
5787 case 7:
5788 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6]);
5789 break;
5790 case 8:
5791 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7]);
5792 break;
a0d0e21e
LW		 5793 }
5794 SP = ORIGMARK;
5795 PUSHi(retval);
5796 RETURN;
5797#else
cea2e8a9 5798 DIE(aTHX_ PL_no_func, "syscall");
a0d0e21e
LW		 5799#endif
5800}
5801
ff68c719 5802#ifdef FCNTL_EMULATE_FLOCK
301e8125 5803
ff68c719 5804/* XXX Emulate flock() with fcntl().
5805 What's really needed is a good file locking module.
5806*/
5807
cea2e8a9
GS		 5808static int
5809fcntl_emulate_flock(int fd, int operation)
ff68c719 5810{
fd9e8b45 5811 int res;
ff68c719 5812 struct flock flock;
301e8125 5813
ff68c719 5814 switch (operation & ~LOCK_NB) {
5815 case LOCK_SH:
5816 flock.l_type = F_RDLCK;
5817 break;
5818 case LOCK_EX:
5819 flock.l_type = F_WRLCK;
5820 break;
5821 case LOCK_UN:
5822 flock.l_type = F_UNLCK;
5823 break;
5824 default:
5825 errno = EINVAL;
5826 return -1;
5827 }
5828 flock.l_whence = SEEK_SET;
d9b3e12d 5829 flock.l_start = flock.l_len = (Off_t)0;
301e8125 5830
fd9e8b45
JD		 5831 res = fcntl(fd, (operation & LOCK_NB) ? F_SETLK : F_SETLKW, &flock);
5832 if (res == -1 && ((errno == EAGAIN) || (errno == EACCES)))
5833 errno = EWOULDBLOCK;
5834 return res;
ff68c719 5835}
5836
5837#endif /* FCNTL_EMULATE_FLOCK */
5838
5839#ifdef LOCKF_EMULATE_FLOCK
16d20bd9
AD		 5840
5841/* XXX Emulate flock() with lockf(). This is just to increase
5842 portability of scripts. The calls are not completely
5843 interchangeable. What's really needed is a good file
5844 locking module.
5845*/
5846
76c32331 5847/* The lockf() constants might have been defined in <unistd.h>.
5848 Unfortunately, <unistd.h> causes troubles on some mixed
5849 (BSD/POSIX) systems, such as SunOS 4.1.3.
16d20bd9
AD		 5850
5851 Further, the lockf() constants aren't POSIX, so they might not be
5852 visible if we're compiling with _POSIX_SOURCE defined. Thus, we'll
5853 just stick in the SVID values and be done with it. Sigh.
5854*/
5855
5856# ifndef F_ULOCK
5857# define F_ULOCK 0 /* Unlock a previously locked region */
5858# endif
5859# ifndef F_LOCK
5860# define F_LOCK 1 /* Lock a region for exclusive use */
5861# endif
5862# ifndef F_TLOCK
5863# define F_TLOCK 2 /* Test and lock a region for exclusive use */
5864# endif
5865# ifndef F_TEST
5866# define F_TEST 3 /* Test a region for other processes locks */
5867# endif
5868
cea2e8a9
GS		 5869static int
5870lockf_emulate_flock(int fd, int operation)
16d20bd9
AD		 5871{
5872 int i;
84902520 5873 Off_t pos;
4ee39169 5874 dSAVE_ERRNO;
84902520
TB		 5875
5876 /* flock locks entire file so for lockf we need to do the same */
6ad3d225 5877 pos = PerlLIO_lseek(fd, (Off_t)0, SEEK_CUR); /* get pos to restore later */
84902520 5878 if (pos > 0) /* is seekable and needs to be repositioned */
6ad3d225 5879 if (PerlLIO_lseek(fd, (Off_t)0, SEEK_SET) < 0)
08b714dd 5880 pos = -1; /* seek failed, so don't seek back afterwards */
4ee39169 5881 RESTORE_ERRNO;
84902520 5882
16d20bd9
AD		 5883 switch (operation) {
5884
5885 /* LOCK_SH - get a shared lock */
5886 case LOCK_SH:
5887 /* LOCK_EX - get an exclusive lock */
5888 case LOCK_EX:
5889 i = lockf (fd, F_LOCK, 0);
5890 break;
5891
5892 /* LOCK_SH|LOCK_NB - get a non-blocking shared lock */
5893 case LOCK_SH|LOCK_NB:
5894 /* LOCK_EX|LOCK_NB - get a non-blocking exclusive lock */
5895 case LOCK_EX|LOCK_NB:
5896 i = lockf (fd, F_TLOCK, 0);
5897 if (i == -1)
5898 if ((errno == EAGAIN) || (errno == EACCES))
5899 errno = EWOULDBLOCK;
5900 break;
5901
ff68c719 5902 /* LOCK_UN - unlock (non-blocking is a no-op) */
16d20bd9 5903 case LOCK_UN:
ff68c719 5904 case LOCK_UN|LOCK_NB:
16d20bd9
AD		 5905 i = lockf (fd, F_ULOCK, 0);
5906 break;
5907
5908 /* Default - can't decipher operation */
5909 default:
5910 i = -1;
5911 errno = EINVAL;
5912 break;
5913 }
84902520
TB		 5914
5915 if (pos > 0) /* need to restore position of the handle */
6ad3d225 5916 PerlLIO_lseek(fd, pos, SEEK_SET); /* ignore error here */
84902520 5917
16d20bd9
AD		 5918 return (i);
5919}
ff68c719 5920
5921#endif /* LOCKF_EMULATE_FLOCK */
241d1a3b
NC		 5922
5923/*
14d04a33 5924 * ex: set ts=8 sts=4 sw=4 et:
37442d52 5925 */
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