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[perl5.git] / pp_sys.c
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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)
36b19dd8
DIM		 216 /* AIX's accessx() doesn't declare its argument const, unlike every other platform */
217# define PERL_EFF_ACCESS(p,f) (accessx((char*)(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;
8d629a78 420 MEXTEND(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 }
85d4e0a3 501 else if (SvOK(errsv) && (SvPV_nomg(errsv,len), len)) {
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
74df577f 693 if (PerlProc_pipe_cloexec(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 }
a0d0e21e
LW		 714 RETPUSHYES;
715
7b52d656 716 badexit:
a0d0e21e
LW		 717 RETPUSHUNDEF;
718#else
cea2e8a9 719 DIE(aTHX_ PL_no_func, "pipe");
a0d0e21e
LW		 720#endif
721}
722
723PP(pp_fileno)
724{
20b7effb 725 dSP; dTARGET;
a0d0e21e
LW		 726 GV *gv;
727 IO *io;
760ac839 728 PerlIO *fp;
a5e1d062 729 const MAGIC *mg;
4592e6ca 730
a0d0e21e
LW		 731 if (MAXARG < 1)
732 RETPUSHUNDEF;
159b6efe 733 gv = MUTABLE_GV(POPs);
9c9f25b8 734 io = GvIO(gv);
4592e6ca 735
9c9f25b8 736 if (io
ad64d0ec 737 && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar)))
5b468f54 738 {
3e0cb5de 739 return tied_method0(SV_CONST(FILENO), SP, MUTABLE_SV(io), mg);
4592e6ca
NIS		 740 }
741
67f2cc75
AC		 742 if (io && IoDIRP(io)) {
743#if defined(HAS_DIRFD) || defined(HAS_DIR_DD_FD)
744 PUSHi(my_dirfd(IoDIRP(io)));
745 RETURN;
746#elif defined(ENOTSUP)
747 errno = ENOTSUP; /* Operation not supported */
748 RETPUSHUNDEF;
749#elif defined(EOPNOTSUPP)
750 errno = EOPNOTSUPP; /* Operation not supported on socket */
751 RETPUSHUNDEF;
752#else
753 errno = EINVAL; /* Invalid argument */
754 RETPUSHUNDEF;
755#endif
756 }
757
9c9f25b8 758 if (!io || !(fp = IoIFP(io))) {
c289d2f7
JH		 759 /* Can't do this because people seem to do things like
760 defined(fileno($foo)) to check whether $foo is a valid fh.
51087808
NC		 761
762 report_evil_fh(gv);
c289d2f7 763 */
a0d0e21e 764 RETPUSHUNDEF;
c289d2f7
JH		 765 }
766
760ac839 767 PUSHi(PerlIO_fileno(fp));
a0d0e21e
LW		 768 RETURN;
769}
770
771PP(pp_umask)
772{
27da23d5 773 dSP;
d7e492a4 774#ifdef HAS_UMASK
27da23d5 775 dTARGET;
761237fe 776 Mode_t anum;
a0d0e21e 777
58536d15 778 if (MAXARG < 1 || (!TOPs && !POPs)) {
b0b546b3
GA		 779 anum = PerlLIO_umask(022);
780 /* setting it to 022 between the two calls to umask avoids
781 * to have a window where the umask is set to 0 -- meaning
782 * that another thread could create world-writeable files. */
783 if (anum != 022)
784 (void)PerlLIO_umask(anum);
a0d0e21e
LW		 785 }
786 else
6ad3d225 787 anum = PerlLIO_umask(POPi);
a0d0e21e
LW		 788 TAINT_PROPER("umask");
789 XPUSHi(anum);
790#else
a0288114 791 /* Only DIE if trying to restrict permissions on "user" (self).
eec2d3df
GS		 792 * Otherwise it's harmless and more useful to just return undef
793 * since 'group' and 'other' concepts probably don't exist here. */
58536d15 794 if (MAXARG >= 1 && (TOPs||POPs) && (POPi & 0700))
cea2e8a9 795 DIE(aTHX_ "umask not implemented");
6b88bc9c 796 XPUSHs(&PL_sv_undef);
a0d0e21e
LW		 797#endif
798 RETURN;
799}
800
801PP(pp_binmode)
802{
20b7effb 803 dSP;
a0d0e21e
LW		 804 GV *gv;
805 IO *io;
760ac839 806 PerlIO *fp;
a0714e2c 807 SV *discp = NULL;
a0d0e21e
LW		 808
809 if (MAXARG < 1)
810 RETPUSHUNDEF;
60382766 811 if (MAXARG > 1) {
16fe6d59 812 discp = POPs;
60382766 813 }
a0d0e21e 814
159b6efe 815 gv = MUTABLE_GV(POPs);
9c9f25b8 816 io = GvIO(gv);
4592e6ca 817
9c9f25b8 818 if (io) {
a5e1d062 819 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 820 if (mg) {
bc0c81ca
NC		 821 /* This takes advantage of the implementation of the varargs
822 function, which I don't think that the optimiser will be able to
823 figure out. Although, as it's a static function, in theory it
824 could. */
3e0cb5de 825 return Perl_tied_method(aTHX_ SV_CONST(BINMODE), SP, MUTABLE_SV(io), mg,
d682515d
NC		 826 G_SCALAR|TIED_METHOD_MORTALIZE_NOT_NEEDED,
827 discp ? 1 : 0, discp);
a79db61d 828 }
4592e6ca 829 }
a0d0e21e 830
9c9f25b8 831 if (!io || !(fp = IoIFP(io))) {
51087808 832 report_evil_fh(gv);
b5fe5ca2 833 SETERRNO(EBADF,RMS_IFI);
50f846a7
SC		 834 RETPUSHUNDEF;
835 }
a0d0e21e 836
40d98b49 837 PUTBACK;
f0a78170 838 {
a79b25b7
VP		 839 STRLEN len = 0;
840 const char *d = NULL;
841 int mode;
842 if (discp)
843 d = SvPV_const(discp, len);
844 mode = mode_from_discipline(d, len);
f0a78170
NC		 845 if (PerlIO_binmode(aTHX_ fp, IoTYPE(io), mode, d)) {
846 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
847 if (!PerlIO_binmode(aTHX_ IoOFP(io), IoTYPE(io), mode, d)) {
848 SPAGAIN;
849 RETPUSHUNDEF;
850 }
851 }
852 SPAGAIN;
853 RETPUSHYES;
854 }
855 else {
856 SPAGAIN;
857 RETPUSHUNDEF;
38af81ff 858 }
40d98b49 859 }
a0d0e21e
LW		 860}
861
862PP(pp_tie)
863{
20b7effb 864 dSP; dMARK;
a0d0e21e 865 HV* stash;
07822e36 866 GV *gv = NULL;
a0d0e21e 867 SV *sv;
1df70142 868 const I32 markoff = MARK - PL_stack_base;
e1ec3a88 869 const char *methname;
14befaf4 870 int how = PERL_MAGIC_tied;
e336de0d 871 U32 items;
c4420975 872 SV *varsv = *++MARK;
a0d0e21e 873
6b05c17a
NIS		 874 switch(SvTYPE(varsv)) {
875 case SVt_PVHV:
aec0c0cc
FC		 876 {
877 HE *entry;
6b05c17a 878 methname = "TIEHASH";
aec0c0cc
FC		 879 if (HvLAZYDEL(varsv) && (entry = HvEITER((HV *)varsv))) {
880 HvLAZYDEL_off(varsv);
881 hv_free_ent((HV *)varsv, entry);
882 }
85fbaab2 883 HvEITER_set(MUTABLE_HV(varsv), 0);
6b05c17a 884 break;
aec0c0cc 885 }
6b05c17a
NIS		 886 case SVt_PVAV:
887 methname = "TIEARRAY";
ce65bc73
FC		 888 if (!AvREAL(varsv)) {
889 if (!AvREIFY(varsv))
890 Perl_croak(aTHX_ "Cannot tie unreifiable array");
891 av_clear((AV *)varsv);
892 AvREIFY_off(varsv);
893 AvREAL_on(varsv);
894 }
6b05c17a
NIS		 895 break;
896 case SVt_PVGV:
13be902c 897 case SVt_PVLV:
8bb5f786 898 if (isGV_with_GP(varsv) && !SvFAKE(varsv)) {
6e592b3a
BM		 899 methname = "TIEHANDLE";
900 how = PERL_MAGIC_tiedscalar;
901 /* For tied filehandles, we apply tiedscalar magic to the IO
902 slot of the GP rather than the GV itself. AMS 20010812 */
903 if (!GvIOp(varsv))
904 GvIOp(varsv) = newIO();
ad64d0ec 905 varsv = MUTABLE_SV(GvIOp(varsv));
6e592b3a
BM		 906 break;
907 }
13733cde
FC		 908 if (SvTYPE(varsv) == SVt_PVLV && LvTYPE(varsv) == 'y') {
909 vivify_defelem(varsv);
910 varsv = LvTARG(varsv);
911 }
924ba076 912 /* FALLTHROUGH */
6b05c17a
NIS		 913 default:
914 methname = "TIESCALAR";
14befaf4 915 how = PERL_MAGIC_tiedscalar;
6b05c17a
NIS		 916 break;
917 }
e336de0d 918 items = SP - MARK++;
a91d1d42 919 if (sv_isobject(*MARK)) { /* Calls GET magic. */
d343c3ef 920 ENTER_with_name("call_TIE");
e788e7d3 921 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 922 PUSHMARK(SP);
eb160463 923 EXTEND(SP,(I32)items);
e336de0d
GS		 924 while (items--)
925 PUSHs(*MARK++);
926 PUTBACK;
864dbfa3 927 call_method(methname, G_SCALAR);
301e8125 928 }
6b05c17a 929 else {
086d2913
NC		 930 /* Can't use call_method here, else this: fileno FOO; tie @a, "FOO"
931 * will attempt to invoke IO::File::TIEARRAY, with (best case) the
932 * wrong error message, and worse case, supreme action at a distance.
933 * (Sorry obfuscation writers. You're not going to be given this one.)
6b05c17a 934 */
4886938f 935 stash = gv_stashsv(*MARK, 0);
0b077c88 936 if (!stash) {
32207c63
AC		 937 if (SvROK(*MARK))
938 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%" SVf "\"",
939 methname, SVfARG(*MARK));
940 else if (isGV(*MARK)) {
941 /* If the glob doesn't name an existing package, using
942 * SVfARG(*MARK) would yield "*Foo::Bar" or *main::Foo. So
943 * generate the name for the error message explicitly. */
7594f18f 944 SV *stashname = sv_2mortal(newSV(0));
32207c63
AC		 945 gv_fullname4(stashname, (GV *) *MARK, NULL, FALSE);
946 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%" SVf "\"",
947 methname, SVfARG(stashname));
948 }
949 else {
950 SV *stashname = !SvPOK(*MARK) ? &PL_sv_no
951 : SvCUR(*MARK) ? *MARK
952 : sv_2mortal(newSVpvs("main"));
953 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%" SVf "\""
954 " (perhaps you forgot to load \"%" SVf "\"?)",
955 methname, SVfARG(stashname), SVfARG(stashname));
0b077c88 956 }
0b077c88
DIM		 957 }
958 else if (!(gv = gv_fetchmethod(stash, methname))) {
959 /* The effective name can only be NULL for stashes that have
960 * been deleted from the symbol table, which this one can't
961 * be, since we just looked it up by name.
962 */
147e3846 963 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%" HEKf "\"",
0b077c88
DIM		 964 methname, HvENAME_HEK_NN(stash));
965 }
d343c3ef 966 ENTER_with_name("call_TIE");
e788e7d3 967 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 968 PUSHMARK(SP);
eb160463 969 EXTEND(SP,(I32)items);
e336de0d
GS		 970 while (items--)
971 PUSHs(*MARK++);
972 PUTBACK;
ad64d0ec 973 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
6b05c17a 974 }
a0d0e21e
LW		 975 SPAGAIN;
976
977 sv = TOPs;
d3acc0f7 978 POPSTACK;
a0d0e21e 979 if (sv_isobject(sv)) {
33c27489 980 sv_unmagic(varsv, how);
ae21d580 981 /* Croak if a self-tie on an aggregate is attempted. */
b881518d 982 if (varsv == SvRV(sv) &&
d87ebaca
YST		 983 (SvTYPE(varsv) == SVt_PVAV ||
984 SvTYPE(varsv) == SVt_PVHV))
ae21d580
JH		 985 Perl_croak(aTHX_
986 "Self-ties of arrays and hashes are not supported");
a0714e2c 987 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
a0d0e21e 988 }
d343c3ef 989 LEAVE_with_name("call_TIE");
3280af22 990 SP = PL_stack_base + markoff;
a0d0e21e
LW		 991 PUSHs(sv);
992 RETURN;
993}
994
b1c05ba5
DM		 995
996/* also used for: pp_dbmclose() */
997
a0d0e21e
LW		 998PP(pp_untie)
999{
20b7effb 1000 dSP;
5b468f54 1001 MAGIC *mg;
33c27489 1002 SV *sv = POPs;
1df70142 1003 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 1004 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
55497cff 1005
ca0d4ed9 1006 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
5b468f54
AMS		 1007 RETPUSHYES;
1008
13733cde
FC		 1009 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y' &&
1010 !(sv = defelem_target(sv, NULL))) RETPUSHUNDEF;
1011
65eba18f 1012 if ((mg = SvTIED_mg(sv, how))) {
1b6737cc 1013 SV * const obj = SvRV(SvTIED_obj(sv, mg));
e7e69c85 1014 if (obj && SvSTASH(obj)) {
c4420975 1015 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
0bd48802 1016 CV *cv;
c4420975 1017 if (gv && isGV(gv) && (cv = GvCV(gv))) {
fa2b88e0 1018 PUSHMARK(SP);
c33ef3ac 1019 PUSHs(SvTIED_obj(MUTABLE_SV(gv), mg));
6e449a3a 1020 mXPUSHi(SvREFCNT(obj) - 1);
fa2b88e0 1021 PUTBACK;
d343c3ef 1022 ENTER_with_name("call_UNTIE");
ad64d0ec 1023 call_sv(MUTABLE_SV(cv), G_VOID);
d343c3ef 1024 LEAVE_with_name("call_UNTIE");
fa2b88e0
JS		 1025 SPAGAIN;
1026 }
a2a5de95
NC		 1027 else if (mg && SvREFCNT(obj) > 1) {
1028 Perl_ck_warner(aTHX_ packWARN(WARN_UNTIE),
147e3846 1029 "untie attempted while %" UVuf " inner references still exist",
a2a5de95 1030 (UV)SvREFCNT(obj) - 1 ) ;
c4420975 1031 }
cbdc8872 1032 }
1033 }
38193a09 1034 sv_unmagic(sv, how) ;
55497cff 1035 RETPUSHYES;
a0d0e21e
LW		 1036}
1037
c07a80fd 1038PP(pp_tied)
1039{
39644a26 1040 dSP;
1b6737cc 1041 const MAGIC *mg;
b3cf4821 1042 dTOPss;
1df70142 1043 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 1044 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
5b468f54 1045
4be76e1f 1046 if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
b3cf4821 1047 goto ret_undef;
c07a80fd 1048
13733cde 1049 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y' &&
b3cf4821 1050 !(sv = defelem_target(sv, NULL))) goto ret_undef;
13733cde 1051
155aba94 1052 if ((mg = SvTIED_mg(sv, how))) {
b3cf4821
DD		 1053 SETs(SvTIED_obj(sv, mg));
1054 return NORMAL; /* PUTBACK not needed, pp_tied never moves SP */
c07a80fd 1055 }
b3cf4821
DD		 1056 ret_undef:
1057 SETs(&PL_sv_undef);
1058 return NORMAL;
c07a80fd 1059}
1060
a0d0e21e
LW		 1061PP(pp_dbmopen)
1062{
20b7effb 1063 dSP;
a0d0e21e
LW		 1064 dPOPPOPssrl;
1065 HV* stash;
07822e36 1066 GV *gv = NULL;
a0d0e21e 1067
85fbaab2 1068 HV * const hv = MUTABLE_HV(POPs);
84bafc02 1069 SV * const sv = newSVpvs_flags("AnyDBM_File", SVs_TEMP);
da51bb9b 1070 stash = gv_stashsv(sv, 0);
8ebc5c01 1071 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
a0d0e21e 1072 PUTBACK;
864dbfa3 1073 require_pv("AnyDBM_File.pm");
a0d0e21e 1074 SPAGAIN;
eff494dd 1075 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH")))
cea2e8a9 1076 DIE(aTHX_ "No dbm on this machine");
a0d0e21e
LW		 1077 }
1078
57d3b86d 1079 ENTER;
924508f0 1080 PUSHMARK(SP);
6b05c17a 1081
924508f0 1082 EXTEND(SP, 5);
a0d0e21e
LW		 1083 PUSHs(sv);
1084 PUSHs(left);
1085 if (SvIV(right))
6e449a3a 1086 mPUSHu(O_RDWR|O_CREAT);
a0d0e21e 1087 else
480e0d3c 1088 {
6e449a3a 1089 mPUSHu(O_RDWR);
480e0d3c
FC		 1090 if (!SvOK(right)) right = &PL_sv_no;
1091 }
a0d0e21e 1092 PUSHs(right);
57d3b86d 1093 PUTBACK;
ad64d0ec 1094 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
a0d0e21e
LW		 1095 SPAGAIN;
1096
1097 if (!sv_isobject(TOPs)) {
924508f0
GS		 1098 SP--;
1099 PUSHMARK(SP);
a0d0e21e
LW		 1100 PUSHs(sv);
1101 PUSHs(left);
6e449a3a 1102 mPUSHu(O_RDONLY);
a0d0e21e 1103 PUSHs(right);
a0d0e21e 1104 PUTBACK;
ad64d0ec 1105 call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
a0d0e21e 1106 SPAGAIN;
4b523e79
DD		 1107 if (sv_isobject(TOPs))
1108 goto retie;
a0d0e21e 1109 }
4b523e79
DD		 1110 else {
1111 retie:
ad64d0ec
NC		 1112 sv_unmagic(MUTABLE_SV(hv), PERL_MAGIC_tied);
1113 sv_magic(MUTABLE_SV(hv), TOPs, PERL_MAGIC_tied, NULL, 0);
6b05c17a 1114 }
a0d0e21e
LW		 1115 LEAVE;
1116 RETURN;
1117}
1118
a0d0e21e
LW		 1119PP(pp_sselect)
1120{
a0d0e21e 1121#ifdef HAS_SELECT
20b7effb 1122 dSP; dTARGET;
eb578fdb
KW		 1123 I32 i;
1124 I32 j;
1125 char *s;
1126 SV *sv;
65202027 1127 NV value;
a0d0e21e
LW		 1128 I32 maxlen = 0;
1129 I32 nfound;
1130 struct timeval timebuf;
1131 struct timeval *tbuf = &timebuf;
1132 I32 growsize;
1133 char *fd_sets[4];
e26c6904 1134 SV *svs[4];
a0d0e21e
LW		 1135#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1136 I32 masksize;
1137 I32 offset;
1138 I32 k;
1139
1140# if BYTEORDER & 0xf0000
1141# define ORDERBYTE (0x88888888 - BYTEORDER)
1142# else
1143# define ORDERBYTE (0x4444 - BYTEORDER)
1144# endif
1145
1146#endif
1147
1148 SP -= 4;
1149 for (i = 1; i <= 3; i++) {
e26c6904 1150 SV * const sv = svs[i] = SP[i];
9d6d5a79 1151 SvGETMAGIC(sv);
15547071
GA		 1152 if (!SvOK(sv))
1153 continue;
ba3062ae
FC		 1154 if (SvREADONLY(sv)) {
1155 if (!(SvPOK(sv) && SvCUR(sv) == 0))
cb077ed2 1156 Perl_croak_no_modify();
ba3062ae
FC		 1157 }
1158 else if (SvIsCOW(sv)) sv_force_normal_flags(sv, 0);
4ef2275c 1159 if (!SvPOK(sv)) {
9d6d5a79
FC		 1160 if (!SvPOKp(sv))
1161 Perl_ck_warner(aTHX_ packWARN(WARN_MISC),
1162 "Non-string passed as bitmask");
e26c6904
FC		 1163 if (SvGAMAGIC(sv)) {
1164 svs[i] = sv_newmortal();
1165 sv_copypv_nomg(svs[i], sv);
1166 }
1167 else
1168 SvPV_force_nomg_nolen(sv); /* force string conversion */
4ef2275c 1169 }
e26c6904 1170 j = SvCUR(svs[i]);
a0d0e21e
LW		 1171 if (maxlen < j)
1172 maxlen = j;
1173 }
1174
5ff3f7a4 1175/* little endians can use vecs directly */
e366b469 1176#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
5ff3f7a4 1177# ifdef NFDBITS
a0d0e21e 1178
5ff3f7a4
GS		 1179# ifndef NBBY
1180# define NBBY 8
1181# endif
a0d0e21e
LW		 1182
1183 masksize = NFDBITS / NBBY;
5ff3f7a4 1184# else
a0d0e21e 1185 masksize = sizeof(long); /* documented int, everyone seems to use long */
5ff3f7a4 1186# endif
a0d0e21e
LW		 1187 Zero(&fd_sets[0], 4, char*);
1188#endif
1189
ad517f75
MHM		 1190# if SELECT_MIN_BITS == 1
1191 growsize = sizeof(fd_set);
1192# else
1193# if defined(__GLIBC__) && defined(__FD_SETSIZE)
1194# undef SELECT_MIN_BITS
1195# define SELECT_MIN_BITS __FD_SETSIZE
1196# endif
e366b469
PG		 1197 /* If SELECT_MIN_BITS is greater than one we most probably will want
1198 * to align the sizes with SELECT_MIN_BITS/8 because for example
1199 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
f05550c0 1200 * UNIX, Solaris, Darwin) the smallest quantum select() operates
e366b469
PG		 1201 * on (sets/tests/clears bits) is 32 bits. */
1202 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
e366b469
PG		 1203# endif
1204
a0d0e21e 1205 sv = SP[4];
90eaaf02 1206 SvGETMAGIC(sv);
a0d0e21e 1207 if (SvOK(sv)) {
90eaaf02 1208 value = SvNV_nomg(sv);
a0d0e21e
LW		 1209 if (value < 0.0)
1210 value = 0.0;
1211 timebuf.tv_sec = (long)value;
65202027 1212 value -= (NV)timebuf.tv_sec;
a0d0e21e
LW		 1213 timebuf.tv_usec = (long)(value * 1000000.0);
1214 }
1215 else
4608196e 1216 tbuf = NULL;
a0d0e21e
LW		 1217
1218 for (i = 1; i <= 3; i++) {
e26c6904 1219 sv = svs[i];
15547071 1220 if (!SvOK(sv) || SvCUR(sv) == 0) {
a0d0e21e
LW		 1221 fd_sets[i] = 0;
1222 continue;
1223 }
4ef2275c 1224 assert(SvPOK(sv));
a0d0e21e
LW		 1225 j = SvLEN(sv);
1226 if (j < growsize) {
1227 Sv_Grow(sv, growsize);
a0d0e21e 1228 }
c07a80fd 1229 j = SvCUR(sv);
1230 s = SvPVX(sv) + j;
1231 while (++j <= growsize) {
1232 *s++ = '\0';
1233 }
1234
a0d0e21e
LW		 1235#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1236 s = SvPVX(sv);
a02a5408 1237 Newx(fd_sets[i], growsize, char);
a0d0e21e
LW		 1238 for (offset = 0; offset < growsize; offset += masksize) {
1239 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1240 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1241 }
1242#else
1243 fd_sets[i] = SvPVX(sv);
1244#endif
1245 }
1246
dc4c69d9
JH		 1247#ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1248 /* Can't make just the (void*) conditional because that would be
1249 * cpp #if within cpp macro, and not all compilers like that. */
1250 nfound = PerlSock_select(
1251 maxlen * 8,
1252 (Select_fd_set_t) fd_sets[1],
1253 (Select_fd_set_t) fd_sets[2],
1254 (Select_fd_set_t) fd_sets[3],
1255 (void*) tbuf); /* Workaround for compiler bug. */
1256#else
6ad3d225 1257 nfound = PerlSock_select(
a0d0e21e
LW		 1258 maxlen * 8,
1259 (Select_fd_set_t) fd_sets[1],
1260 (Select_fd_set_t) fd_sets[2],
1261 (Select_fd_set_t) fd_sets[3],
1262 tbuf);
dc4c69d9 1263#endif
a0d0e21e
LW		 1264 for (i = 1; i <= 3; i++) {
1265 if (fd_sets[i]) {
e26c6904 1266 sv = svs[i];
a0d0e21e
LW		 1267#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1268 s = SvPVX(sv);
1269 for (offset = 0; offset < growsize; offset += masksize) {
1270 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1271 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1272 }
1273 Safefree(fd_sets[i]);
1274#endif
e26c6904
FC		 1275 if (sv != SP[i])
1276 SvSetMagicSV(SP[i], sv);
1277 else
1278 SvSETMAGIC(sv);
a0d0e21e
LW		 1279 }
1280 }
1281
4189264e 1282 PUSHi(nfound);
82334630 1283 if (GIMME_V == G_ARRAY && tbuf) {
65202027
DS		 1284 value = (NV)(timebuf.tv_sec) +
1285 (NV)(timebuf.tv_usec) / 1000000.0;
6e449a3a 1286 mPUSHn(value);
a0d0e21e
LW		 1287 }
1288 RETURN;
1289#else
cea2e8a9 1290 DIE(aTHX_ "select not implemented");
a0d0e21e
LW		 1291#endif
1292}
1293
8226a3d7 1294/*
dcccc8ff 1295
3f620621 1296=for apidoc_section $GV
dcccc8ff 1297
8226a3d7
NC		 1298=for apidoc setdefout
1299
796b6530
KW		 1300Sets C<PL_defoutgv>, the default file handle for output, to the passed in
1301typeglob. As C<PL_defoutgv> "owns" a reference on its typeglob, the reference
8226a3d7 1302count of the passed in typeglob is increased by one, and the reference count
796b6530 1303of the typeglob that C<PL_defoutgv> points to is decreased by one.
8226a3d7
NC		 1304
1305=cut
1306*/
1307
4633a7c4 1308void
864dbfa3 1309Perl_setdefout(pTHX_ GV *gv)
4633a7c4 1310{
656457d0
DM		 1311 GV *oldgv = PL_defoutgv;
1312
9a9bb270 1313 PERL_ARGS_ASSERT_SETDEFOUT;
656457d0 1314
9a9bb270 1315 SvREFCNT_inc_simple_void_NN(gv);
3280af22 1316 PL_defoutgv = gv;
656457d0 1317 SvREFCNT_dec(oldgv);
4633a7c4
LW		 1318}
1319
a0d0e21e
LW		 1320PP(pp_select)
1321{
20b7effb 1322 dSP; dTARGET;
4633a7c4 1323 HV *hv;
159b6efe 1324 GV * const newdefout = (PL_op->op_private > 0) ? (MUTABLE_GV(POPs)) : NULL;
099be4f1 1325 GV * egv = GvEGVx(PL_defoutgv);
0df2568b 1326 GV * const *gvp;
4633a7c4 1327
4633a7c4 1328 if (!egv)
3280af22 1329 egv = PL_defoutgv;
099be4f1 1330 hv = isGV_with_GP(egv) ? GvSTASH(egv) : NULL;
0df2568b 1331 gvp = hv && HvENAME(hv)
204263bc
FC		 1332 ? (GV**)hv_fetch(hv, GvNAME(egv), HEK_UTF8(GvNAME_HEK(egv)) ? -GvNAMELEN(egv) : GvNAMELEN(egv), FALSE)
1333 : NULL;
0df2568b 1334 if (gvp && *gvp == egv) {
bd61b366 1335 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
f86702cc 1336 XPUSHTARG;
0df2568b
FC		 1337 }
1338 else {
ad64d0ec 1339 mXPUSHs(newRV(MUTABLE_SV(egv)));
4633a7c4
LW		 1340 }
1341
1342 if (newdefout) {
ded8aa31
GS		 1343 if (!GvIO(newdefout))
1344 gv_IOadd(newdefout);
4633a7c4
LW		 1345 setdefout(newdefout);
1346 }
1347
a0d0e21e
LW		 1348 RETURN;
1349}
1350
1351PP(pp_getc)
1352{
20b7effb 1353 dSP; dTARGET;
12dc5f94
DM		 1354 /* pp_coreargs pushes a NULL to indicate no args passed to
1355 * CORE::getc() */
30901a8a
FC		 1356 GV * const gv =
1357 MAXARG==0 || (!TOPs && !POPs) ? PL_stdingv : MUTABLE_GV(POPs);
9c9f25b8 1358 IO *const io = GvIO(gv);
2ae324a7 1359
ac3697cd
NC		 1360 if (MAXARG == 0)
1361 EXTEND(SP, 1);
1362
9c9f25b8 1363 if (io) {
a5e1d062 1364 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1365 if (mg) {
1c23e2bd 1366 const U8 gimme = GIMME_V;
3e0cb5de 1367 Perl_tied_method(aTHX_ SV_CONST(GETC), SP, MUTABLE_SV(io), mg, gimme, 0);
0240605e
NC		 1368 if (gimme == G_SCALAR) {
1369 SPAGAIN;
a79db61d 1370 SvSetMagicSV_nosteal(TARG, TOPs);
0240605e
NC		 1371 }
1372 return NORMAL;
a79db61d 1373 }
2ae324a7 1374 }
90133b69 1375 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
51087808 1376 if (!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
831e4cc3 1377 report_evil_fh(gv);
b5fe5ca2 1378 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1379 RETPUSHUNDEF;
90133b69 1380 }
bbce6d69 1381 TAINT;
76f68e9b 1382 sv_setpvs(TARG, " ");
9bc64814 1383 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
7d59b7e4
NIS		 1384 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1385 /* Find out how many bytes the char needs */
aa07b2f6 1386 Size_t len = UTF8SKIP(SvPVX_const(TARG));
7d59b7e4
NIS		 1387 if (len > 1) {
1388 SvGROW(TARG,len+1);
1389 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1390 SvCUR_set(TARG,1+len);
1391 }
1392 SvUTF8_on(TARG);
1393 }
88c34251 1394 else SvUTF8_off(TARG);
a0d0e21e
LW		 1395 PUSHTARG;
1396 RETURN;
1397}
1398
76e3520e 1399STATIC OP *
cea2e8a9 1400S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
a0d0e21e 1401{
eb578fdb 1402 PERL_CONTEXT *cx;
1c23e2bd 1403 const U8 gimme = GIMME_V;
a0d0e21e 1404
7918f24d
NC		 1405 PERL_ARGS_ASSERT_DOFORM;
1406
535e48ea 1407 if (CvCLONE(cv))
7b190374
NC		 1408 cv = MUTABLE_CV(sv_2mortal(MUTABLE_SV(cv_clone(cv))));
1409
ed8ff0f3 1410 cx = cx_pushblock(CXt_FORMAT, gimme, PL_stack_sp, PL_savestack_ix);
6a7d52cc 1411 cx_pushformat(cx, cv, retop, gv);
d2af2719 1412 if (CvDEPTH(cv) >= 2)
f32c7e86 1413 pad_push(CvPADLIST(cv), CvDEPTH(cv));
f32c7e86 1414 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), CvDEPTH(cv));
a0d0e21e 1415
4633a7c4 1416 setdefout(gv); /* locally select filehandle so $% et al work */
a0d0e21e
LW		 1417 return CvSTART(cv);
1418}
1419
1420PP(pp_enterwrite)
1421{
39644a26 1422 dSP;
eb578fdb
KW		 1423 GV *gv;
1424 IO *io;
a0d0e21e 1425 GV *fgv;
07822e36 1426 CV *cv = NULL;
a0d0e21e 1427
2addaaf3 1428 if (MAXARG == 0) {
2addaaf3 1429 EXTEND(SP, 1);
49225470 1430 gv = PL_defoutgv;
2addaaf3 1431 }
a0d0e21e 1432 else {
159b6efe 1433 gv = MUTABLE_GV(POPs);
a0d0e21e 1434 if (!gv)
3280af22 1435 gv = PL_defoutgv;
a0d0e21e 1436 }
a0d0e21e
LW		 1437 io = GvIO(gv);
1438 if (!io) {
1439 RETPUSHNO;
1440 }
1441 if (IoFMT_GV(io))
1442 fgv = IoFMT_GV(io);
1443 else
1444 fgv = gv;
1445
2d1ebc9b 1446 assert(fgv);
a79db61d 1447
a0d0e21e 1448 cv = GvFORM(fgv);
a0d0e21e 1449 if (!cv) {
19742f39 1450 SV * const tmpsv = sv_newmortal();
f4a7049d 1451 gv_efullname4(tmpsv, fgv, NULL, FALSE);
147e3846 1452 DIE(aTHX_ "Undefined format \"%" SVf "\" called", SVfARG(tmpsv));
a0d0e21e 1453 }
44a8e56a 1454 IoFLAGS(io) &= ~IOf_DIDTOP;
8e4ecf23 1455 RETURNOP(doform(cv,gv,PL_op->op_next));
a0d0e21e
LW		 1456}
1457
1458PP(pp_leavewrite)
1459{
20b7effb 1460 dSP;
4ebe6e95 1461 GV * const gv = CX_CUR()->blk_format.gv;
eb578fdb 1462 IO * const io = GvIOp(gv);
8b8cacda 1463 PerlIO *ofp;
760ac839 1464 PerlIO *fp;
eb578fdb 1465 PERL_CONTEXT *cx;
8f89e5a9 1466 OP *retop;
617a4f41 1467 bool is_return = cBOOL(PL_op->op_type == OP_RETURN);
a0d0e21e 1468
617a4f41 1469 if (is_return || !io || !(ofp = IoOFP(io)))
8b8cacda
B		 1470 goto forget_top;
1471
760ac839 1472 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1473 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
8b8cacda 1474
3280af22
NIS		 1475 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1476 PL_formtarget != PL_toptarget)
a0d0e21e 1477 {
4633a7c4
LW		 1478 GV *fgv;
1479 CV *cv;
a0d0e21e
LW		 1480 if (!IoTOP_GV(io)) {
1481 GV *topgv;
a0d0e21e
LW		 1482
1483 if (!IoTOP_NAME(io)) {
1b6737cc 1484 SV *topname;
a0d0e21e
LW		 1485 if (!IoFMT_NAME(io))
1486 IoFMT_NAME(io) = savepv(GvNAME(gv));
147e3846 1487 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%" HEKf "_TOP",
d0c0e7dd 1488 HEKfARG(GvNAME_HEK(gv))));
f776e3cd 1489 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
748a9306 1490 if ((topgv && GvFORM(topgv)) ||
fafc274c 1491 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
2e0de35c 1492 IoTOP_NAME(io) = savesvpv(topname);
a0d0e21e 1493 else
89529cee 1494 IoTOP_NAME(io) = savepvs("top");
a0d0e21e 1495 }
f776e3cd 1496 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
a0d0e21e 1497 if (!topgv || !GvFORM(topgv)) {
b929a54b 1498 IoLINES_LEFT(io) = IoPAGE_LEN(io);
a0d0e21e
LW		 1499 goto forget_top;
1500 }
1501 IoTOP_GV(io) = topgv;
1502 }
748a9306
LW		 1503 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1504 I32 lines = IoLINES_LEFT(io);
504618e9 1505 const char *s = SvPVX_const(PL_formtarget);
5716a028 1506 const char *e = SvEND(PL_formtarget);
8e07c86e
AD		 1507 if (lines <= 0) /* Yow, header didn't even fit!!! */
1508 goto forget_top;
748a9306 1509 while (lines-- > 0) {
5716a028 1510 s = (char *) memchr(s, '\n', e - s);
748a9306
LW		 1511 if (!s)
1512 break;
1513 s++;
1514 }
1515 if (s) {
f54cb97a 1516 const STRLEN save = SvCUR(PL_formtarget);
aa07b2f6 1517 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
d75029d0
NIS		 1518 do_print(PL_formtarget, ofp);
1519 SvCUR_set(PL_formtarget, save);
3280af22
NIS		 1520 sv_chop(PL_formtarget, s);
1521 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW		 1522 }
1523 }
a0d0e21e 1524 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
f6dfc736 1525 do_print(GvSV(gv_fetchpvs("\f", GV_ADD, SVt_PV)), ofp);
a0d0e21e
LW		 1526 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1527 IoPAGE(io)++;
3280af22 1528 PL_formtarget = PL_toptarget;
748a9306 1529 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4 1530 fgv = IoTOP_GV(io);
636013b3 1531 assert(fgv); /* IoTOP_GV(io) should have been set above */
4633a7c4 1532 cv = GvFORM(fgv);
1df70142
AL		 1533 if (!cv) {
1534 SV * const sv = sv_newmortal();
bd61b366 1535 gv_efullname4(sv, fgv, NULL, FALSE);
147e3846 1536 DIE(aTHX_ "Undefined top format \"%" SVf "\" called", SVfARG(sv));
4633a7c4 1537 }
43cd5cb7 1538 return doform(cv, gv, PL_op);
a0d0e21e
LW		 1539 }
1540
1541 forget_top:
4ebe6e95 1542 cx = CX_CUR();
4df352a8
DM		 1543 assert(CxTYPE(cx) == CXt_FORMAT);
1544 SP = PL_stack_base + cx->blk_oldsp; /* ignore retval of formline */
2f450c1b 1545 CX_LEAVE_SCOPE(cx);
6a7d52cc 1546 cx_popformat(cx);
ed8ff0f3 1547 cx_popblock(cx);
8f89e5a9 1548 retop = cx->blk_sub.retop;
5da525e9 1549 CX_POP(cx);
a0d0e21e 1550
b7effc98
DM		 1551 EXTEND(SP, 1);
1552
617a4f41
DM		 1553 if (is_return)
1554 /* XXX the semantics of doing 'return' in a format aren't documented.
1555 * Currently we ignore any args to 'return' and just return
1556 * a single undef in both scalar and list contexts
1557 */
1558 PUSHs(&PL_sv_undef);
1559 else if (!io || !(fp = IoOFP(io))) {
c782dc1d 1560 if (io && IoIFP(io))
7716c5c5 1561 report_wrongway_fh(gv, '<');
c521cf7c 1562 else
7716c5c5 1563 report_evil_fh(gv);
3280af22 1564 PUSHs(&PL_sv_no);
a0d0e21e
LW		 1565 }
1566 else {
3280af22 1567 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
a2a5de95 1568 Perl_ck_warner(aTHX_ packWARN(WARN_IO), "page overflow");
a0d0e21e 1569 }
d75029d0 1570 if (!do_print(PL_formtarget, fp))
3280af22 1571 PUSHs(&PL_sv_no);
a0d0e21e 1572 else {
3280af22
NIS		 1573 FmLINES(PL_formtarget) = 0;
1574 SvCUR_set(PL_formtarget, 0);
1575 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1576 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1577 (void)PerlIO_flush(fp);
3280af22 1578 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1579 }
1580 }
3280af22 1581 PL_formtarget = PL_bodytarget;
8e4ecf23 1582 RETURNOP(retop);
a0d0e21e
LW		 1583}
1584
1585PP(pp_prtf)
1586{
20b7effb 1587 dSP; dMARK; dORIGMARK;
760ac839 1588 PerlIO *fp;
a0d0e21e 1589
159b6efe
NC		 1590 GV * const gv
1591 = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv;
9c9f25b8 1592 IO *const io = GvIO(gv);
46fc3d4c 1593
87385d72
FC		 1594 /* Treat empty list as "" */
1595 if (MARK == SP) XPUSHs(&PL_sv_no);
1596
9c9f25b8 1597 if (io) {
a5e1d062 1598 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d
AL		 1599 if (mg) {
1600 if (MARK == ORIGMARK) {
1601 MEXTEND(SP, 1);
1602 ++MARK;
1603 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1604 ++SP;
1605 }
3e0cb5de 1606 return Perl_tied_method(aTHX_ SV_CONST(PRINTF), mark - 1, MUTABLE_SV(io),
d682515d
NC		 1607 mg,
1608 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1609 sp - mark);
a79db61d 1610 }
46fc3d4c 1611 }
1612
9c9f25b8 1613 if (!io) {
51087808 1614 report_evil_fh(gv);
93189314 1615 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW		 1616 goto just_say_no;
1617 }
1618 else if (!(fp = IoOFP(io))) {
7716c5c5
NC		 1619 if (IoIFP(io))
1620 report_wrongway_fh(gv, '<');
1621 else if (ckWARN(WARN_CLOSED))
1622 report_evil_fh(gv);
93189314 1623 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
a0d0e21e
LW		 1624 goto just_say_no;
1625 }
1626 else {
c7bd8b84 1627 SV *sv = sv_newmortal();
a0d0e21e
LW		 1628 do_sprintf(sv, SP - MARK, MARK + 1);
1629 if (!do_print(sv, fp))
1630 goto just_say_no;
1631
1632 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1633 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW		 1634 goto just_say_no;
1635 }
a0d0e21e 1636 SP = ORIGMARK;
3280af22 1637 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1638 RETURN;
1639
1640 just_say_no:
a0d0e21e 1641 SP = ORIGMARK;
3280af22 1642 PUSHs(&PL_sv_undef);
a0d0e21e
LW		 1643 RETURN;
1644}
1645
c07a80fd 1646PP(pp_sysopen)
1647{
39644a26 1648 dSP;
de5e49e1 1649 const int perm = (MAXARG > 3 && (TOPs || POPs)) ? POPi : 0666;
1df70142 1650 const int mode = POPi;
1b6737cc 1651 SV * const sv = POPs;
159b6efe 1652 GV * const gv = MUTABLE_GV(POPs);
1b6737cc 1653 STRLEN len;
c07a80fd 1654
4592e6ca 1655 /* Need TIEHANDLE method ? */
1b6737cc 1656 const char * const tmps = SvPV_const(sv, len);
7e30e49f 1657 if (do_open_raw(gv, tmps, len, mode, perm, NULL)) {
c07a80fd 1658 IoLINES(GvIOp(gv)) = 0;
3280af22 1659 PUSHs(&PL_sv_yes);
c07a80fd 1660 }
1661 else {
3280af22 1662 PUSHs(&PL_sv_undef);
c07a80fd 1663 }
1664 RETURN;
1665}
1666
b1c05ba5
DM		 1667
1668/* also used for: pp_read() and pp_recv() (where supported) */
1669
a0d0e21e
LW		 1670PP(pp_sysread)
1671{
20b7effb 1672 dSP; dMARK; dORIGMARK; dTARGET;
0b423688 1673 SSize_t offset;
a0d0e21e
LW		 1674 IO *io;
1675 char *buffer;
0b423688 1676 STRLEN orig_size;
5b54f415 1677 SSize_t length;
eb5c063a 1678 SSize_t count;
748a9306 1679 SV *bufsv;
a0d0e21e 1680 STRLEN blen;
eb5c063a 1681 int fp_utf8;
1dd30107
NC		 1682 int buffer_utf8;
1683 SV *read_target;
eb5c063a
NIS		 1684 Size_t got = 0;
1685 Size_t wanted;
1d636c13 1686 bool charstart = FALSE;
87330c3c
JH		 1687 STRLEN charskip = 0;
1688 STRLEN skip = 0;
159b6efe 1689 GV * const gv = MUTABLE_GV(*++MARK);
375ed12a
JH		 1690 int fd;
1691
5b468f54 1692 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1b6737cc 1693 && gv && (io = GvIO(gv)) )
137443ea 1694 {
a5e1d062 1695 const MAGIC *const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
1b6737cc 1696 if (mg) {
3e0cb5de 1697 return Perl_tied_method(aTHX_ SV_CONST(READ), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC		 1698 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1699 sp - mark);
1b6737cc 1700 }
2ae324a7 1701 }
1702
a0d0e21e
LW		 1703 if (!gv)
1704 goto say_undef;
748a9306 1705 bufsv = *++MARK;
ff68c719 1706 if (! SvOK(bufsv))
60e13354 1707 SvPVCLEAR(bufsv);
a0d0e21e 1708 length = SvIVx(*++MARK);
4bac9ae4
CS		 1709 if (length < 0)
1710 DIE(aTHX_ "Negative length");
748a9306 1711 SETERRNO(0,0);
a0d0e21e
LW		 1712 if (MARK < SP)
1713 offset = SvIVx(*++MARK);
1714 else
1715 offset = 0;
1716 io = GvIO(gv);
b5fe5ca2 1717 if (!io || !IoIFP(io)) {
51087808 1718 report_evil_fh(gv);
b5fe5ca2 1719 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1720 goto say_undef;
b5fe5ca2 1721 }
375ed12a
JH		 1722
1723 /* Note that fd can here validly be -1, don't check it yet. */
1724 fd = PerlIO_fileno(IoIFP(io));
1725
0064a8a9 1726 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
fb10a8a7 1727 if (PL_op->op_type == OP_SYSREAD || PL_op->op_type == OP_RECV) {
1ed4b776
TC		 1728 Perl_croak(aTHX_
1729 "%s() isn't allowed on :utf8 handles",
1730 OP_DESC(PL_op));
fb10a8a7 1731 }
7d59b7e4 1732 buffer = SvPVutf8_force(bufsv, blen);
1e54db1a 1733 /* UTF-8 may not have been set if they are all low bytes */
eb5c063a 1734 SvUTF8_on(bufsv);
9b9d7ce8 1735 buffer_utf8 = 0;
7d59b7e4
NIS		 1736 }
1737 else {
1738 buffer = SvPV_force(bufsv, blen);
9edbb8b2 1739 buffer_utf8 = DO_UTF8(bufsv);
7d59b7e4 1740 }
4bac9ae4 1741 if (DO_UTF8(bufsv)) {
3f914778 1742 blen = sv_len_utf8_nomg(bufsv);
4bac9ae4 1743 }
7d59b7e4 1744
d0965105
JH		 1745 charstart = TRUE;
1746 charskip = 0;
87330c3c 1747 skip = 0;
4bac9ae4 1748 wanted = length;
d0965105 1749
a0d0e21e 1750#ifdef HAS_SOCKET
533c011a 1751 if (PL_op->op_type == OP_RECV) {
0b423688 1752 Sock_size_t bufsize;
46fc3d4c 1753 char namebuf[MAXPATHLEN];
375ed12a
JH		 1754 if (fd < 0) {
1755 SETERRNO(EBADF,SS_IVCHAN);
78e69e60 1756 goto say_undef;
375ed12a 1757 }
b5afd346 1758#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
490ab354
JH		 1759 bufsize = sizeof (struct sockaddr_in);
1760#else
46fc3d4c 1761 bufsize = sizeof namebuf;
490ab354 1762#endif
abf95952
IZ		 1763#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1764 if (bufsize >= 256)
1765 bufsize = 255;
1766#endif
eb160463 1767 buffer = SvGROW(bufsv, (STRLEN)(length+1));
bbce6d69 1768 /* 'offset' means 'flags' here */
375ed12a 1769 count = PerlSock_recvfrom(fd, buffer, length, offset,
10edeb5d 1770 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1771 if (count < 0)
78e69e60 1772 goto say_undef;
8eb023a9
DM		 1773 /* MSG_TRUNC can give oversized count; quietly lose it */
1774 if (count > length)
1775 count = length;
eb5c063a 1776 SvCUR_set(bufsv, count);
748a9306
LW		 1777 *SvEND(bufsv) = '\0';
1778 (void)SvPOK_only(bufsv);
eb5c063a
NIS		 1779 if (fp_utf8)
1780 SvUTF8_on(bufsv);
748a9306 1781 SvSETMAGIC(bufsv);
aac0dd9a 1782 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1783 if (!(IoFLAGS(io) & IOf_UNTAINT))
1784 SvTAINTED_on(bufsv);
a0d0e21e 1785 SP = ORIGMARK;
e122534c
TC		 1786#if defined(__CYGWIN__)
1787 /* recvfrom() on cygwin doesn't set bufsize at all for
1788 connected sockets, leaving us with trash in the returned
1789 name, so use the same test as the Win32 code to check if it
1790 wasn't set, and set it [perl #118843] */
1791 if (bufsize == sizeof namebuf)
1792 bufsize = 0;
1793#endif
46fc3d4c 1794 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW		 1795 PUSHs(TARG);
1796 RETURN;
1797 }
a0d0e21e 1798#endif
bbce6d69 1799 if (offset < 0) {
0b423688 1800 if (-offset > (SSize_t)blen)
cea2e8a9 1801 DIE(aTHX_ "Offset outside string");
bbce6d69 1802 offset += blen;
1803 }
eb5c063a
NIS		 1804 if (DO_UTF8(bufsv)) {
1805 /* convert offset-as-chars to offset-as-bytes */
d5f981bb 1806 if (offset >= (SSize_t)blen)
6960c29a
CH		 1807 offset += SvCUR(bufsv) - blen;
1808 else
1809 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
eb5c063a 1810 }
375ed12a 1811
eb5c063a 1812 more_bytes:
375ed12a
JH		 1813 /* Reestablish the fd in case it shifted from underneath us. */
1814 fd = PerlIO_fileno(IoIFP(io));
1815
0b423688 1816 orig_size = SvCUR(bufsv);
1dd30107
NC		 1817 /* Allocating length + offset + 1 isn't perfect in the case of reading
1818 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1819 unduly.
1820 (should be 2 * length + offset + 1, or possibly something longer if
47e13f24 1821 IN_ENCODING Is true) */
eb160463 1822 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
0b423688
TC		 1823 if (offset > 0 && offset > (SSize_t)orig_size) { /* Zero any newly allocated space */
1824 Zero(buffer+orig_size, offset-orig_size, char);
cd52b7b2 1825 }
eb5c063a 1826 buffer = buffer + offset;
1dd30107
NC		 1827 if (!buffer_utf8) {
1828 read_target = bufsv;
1829 } else {
1830 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1831 concatenate it to the current buffer. */
1832
1833 /* Truncate the existing buffer to the start of where we will be
1834 reading to: */
1835 SvCUR_set(bufsv, offset);
1836
1837 read_target = sv_newmortal();
862a34c6 1838 SvUPGRADE(read_target, SVt_PV);
fe2774ed 1839 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1dd30107 1840 }
eb5c063a 1841
533c011a 1842 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1843#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1844 if (IoTYPE(io) == IoTYPE_SOCKET) {
375ed12a
JH		 1845 if (fd < 0) {
1846 SETERRNO(EBADF,SS_IVCHAN);
1847 count = -1;
1848 }
1849 else
1850 count = PerlSock_recv(fd, buffer, length, 0);
a7092146
GS		 1851 }
1852 else
1853#endif
1854 {
375ed12a
JH		 1855 if (fd < 0) {
1856 SETERRNO(EBADF,RMS_IFI);
1857 count = -1;
1858 }
1859 else
1860 count = PerlLIO_read(fd, buffer, length);
a7092146 1861 }
a0d0e21e
LW		 1862 }
1863 else
3b02c43c 1864 {
eb5c063a
NIS		 1865 count = PerlIO_read(IoIFP(io), buffer, length);
1866 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1867 if (count == 0 && PerlIO_error(IoIFP(io)))
1868 count = -1;
3b02c43c 1869 }
eb5c063a 1870 if (count < 0) {
7716c5c5 1871 if (IoTYPE(io) == IoTYPE_WRONLY)
a5390457 1872 report_wrongway_fh(gv, '>');
a0d0e21e 1873 goto say_undef;
af8c498a 1874 }
aa07b2f6 1875 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1dd30107
NC		 1876 *SvEND(read_target) = '\0';
1877 (void)SvPOK_only(read_target);
0064a8a9 1878 if (fp_utf8 && !IN_BYTES) {
eb5c063a 1879 /* Look at utf8 we got back and count the characters */
1df70142 1880 const char *bend = buffer + count;
eb5c063a 1881 while (buffer < bend) {
d0965105
JH		 1882 if (charstart) {
1883 skip = UTF8SKIP(buffer);
1884 charskip = 0;
1885 }
1886 if (buffer - charskip + skip > bend) {
eb5c063a
NIS		 1887 /* partial character - try for rest of it */
1888 length = skip - (bend-buffer);
aa07b2f6 1889 offset = bend - SvPVX_const(bufsv);
d0965105
JH		 1890 charstart = FALSE;
1891 charskip += count;
eb5c063a
NIS		 1892 goto more_bytes;
1893 }
1894 else {
1895 got++;
1896 buffer += skip;
d0965105
JH		 1897 charstart = TRUE;
1898 charskip = 0;
eb5c063a
NIS		 1899 }
1900 }
1901 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1902 provided amount read (count) was what was requested (length)
1903 */
1904 if (got < wanted && count == length) {
d0965105 1905 length = wanted - got;
aa07b2f6 1906 offset = bend - SvPVX_const(bufsv);
eb5c063a
NIS		 1907 goto more_bytes;
1908 }
1909 /* return value is character count */
1910 count = got;
1911 SvUTF8_on(bufsv);
1912 }
1dd30107
NC		 1913 else if (buffer_utf8) {
1914 /* Let svcatsv upgrade the bytes we read in to utf8.
1915 The buffer is a mortal so will be freed soon. */
1916 sv_catsv_nomg(bufsv, read_target);
1917 }
748a9306 1918 SvSETMAGIC(bufsv);
aac0dd9a 1919 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1920 if (!(IoFLAGS(io) & IOf_UNTAINT))
1921 SvTAINTED_on(bufsv);
a0d0e21e 1922 SP = ORIGMARK;
eb5c063a 1923 PUSHi(count);
a0d0e21e
LW		 1924 RETURN;
1925
1926 say_undef:
1927 SP = ORIGMARK;
1928 RETPUSHUNDEF;
1929}
1930
b1c05ba5
DM		 1931
1932/* also used for: pp_send() where defined */
1933
60504e18 1934PP(pp_syswrite)
a0d0e21e 1935{
20b7effb 1936 dSP; dMARK; dORIGMARK; dTARGET;
748a9306 1937 SV *bufsv;
83003860 1938 const char *buffer;
8c99d73e 1939 SSize_t retval;
a0d0e21e 1940 STRLEN blen;
64a1bc8e 1941 const int op_type = PL_op->op_type;
c9cb0f41
NC		 1942 bool doing_utf8;
1943 U8 *tmpbuf = NULL;
159b6efe 1944 GV *const gv = MUTABLE_GV(*++MARK);
91472ad4 1945 IO *const io = GvIO(gv);
375ed12a 1946 int fd;
91472ad4
NC		 1947
1948 if (op_type == OP_SYSWRITE && io) {
a5e1d062 1949 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 1950 if (mg) {
a79db61d 1951 if (MARK == SP - 1) {
c8834ab7
TC		 1952 SV *sv = *SP;
1953 mXPUSHi(sv_len(sv));
a79db61d
AL		 1954 PUTBACK;
1955 }
1956
3e0cb5de 1957 return Perl_tied_method(aTHX_ SV_CONST(WRITE), mark - 1, MUTABLE_SV(io), mg,
d682515d
NC		 1958 G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
1959 sp - mark);
64a1bc8e 1960 }
1d603a67 1961 }
a0d0e21e
LW		 1962 if (!gv)
1963 goto say_undef;
64a1bc8e 1964
748a9306 1965 bufsv = *++MARK;
64a1bc8e 1966
748a9306 1967 SETERRNO(0,0);
cf167416 1968 if (!io || !IoIFP(io) || IoTYPE(io) == IoTYPE_RDONLY) {
8c99d73e 1969 retval = -1;
51087808
NC		 1970 if (io && IoIFP(io))
1971 report_wrongway_fh(gv, '<');
1972 else
1973 report_evil_fh(gv);
b5fe5ca2 1974 SETERRNO(EBADF,RMS_IFI);
7d59b7e4
NIS		 1975 goto say_undef;
1976 }
375ed12a
JH		 1977 fd = PerlIO_fileno(IoIFP(io));
1978 if (fd < 0) {
1979 SETERRNO(EBADF,SS_IVCHAN);
1980 retval = -1;
1981 goto say_undef;
1982 }
7d59b7e4 1983
c9cb0f41
NC		 1984 /* Do this first to trigger any overloading. */
1985 buffer = SvPV_const(bufsv, blen);
c9cb0f41
NC		 1986 doing_utf8 = DO_UTF8(bufsv);
1987
7d59b7e4 1988 if (PerlIO_isutf8(IoIFP(io))) {
1ed4b776
TC		 1989 Perl_croak(aTHX_
1990 "%s() isn't allowed on :utf8 handles",
1991 OP_DESC(PL_op));
a0d0e21e 1992 }
c9cb0f41
NC		 1993 else if (doing_utf8) {
1994 STRLEN tmplen = blen;
a79db61d 1995 U8 * const result = bytes_from_utf8((const U8*) buffer, &tmplen, &doing_utf8);
c9cb0f41
NC		 1996 if (!doing_utf8) {
1997 tmpbuf = result;
1998 buffer = (char *) tmpbuf;
1999 blen = tmplen;
2000 }
2001 else {
2002 assert((char *)result == buffer);
2003 Perl_croak(aTHX_ "Wide character in %s", OP_DESC(PL_op));
2004 }
7d59b7e4
NIS		 2005 }
2006
e2712234 2007#ifdef HAS_SOCKET
7627e6d0 2008 if (op_type == OP_SEND) {
e2712234
NC		 2009 const int flags = SvIVx(*++MARK);
2010 if (SP > MARK) {
2011 STRLEN mlen;
2012 char * const sockbuf = SvPVx(*++MARK, mlen);
375ed12a 2013 retval = PerlSock_sendto(fd, buffer, blen,
e2712234
NC		 2014 flags, (struct sockaddr *)sockbuf, mlen);
2015 }
2016 else {
375ed12a 2017 retval = PerlSock_send(fd, buffer, blen, flags);
e2712234 2018 }
7627e6d0
NC		 2019 }
2020 else
e2712234 2021#endif
7627e6d0 2022 {
c9cb0f41 2023 Size_t length = 0; /* This length is in characters. */
7d59b7e4 2024 IV offset;
c9cb0f41 2025
c9cb0f41 2026 if (MARK >= SP) {
1ed4b776 2027 length = blen;
c9cb0f41
NC		 2028 } else {
2029#if Size_t_size > IVSIZE
2030 length = (Size_t)SvNVx(*++MARK);
2031#else
2032 length = (Size_t)SvIVx(*++MARK);
2033#endif
4b0c4b6f
NC		 2034 if ((SSize_t)length < 0) {
2035 Safefree(tmpbuf);
c9cb0f41 2036 DIE(aTHX_ "Negative length");
4b0c4b6f 2037 }
7d59b7e4 2038 }
c9cb0f41 2039
bbce6d69 2040 if (MARK < SP) {
a0d0e21e 2041 offset = SvIVx(*++MARK);
bbce6d69 2042 if (offset < 0) {
1ed4b776 2043 if (-offset > (IV)blen) {
4b0c4b6f 2044 Safefree(tmpbuf);
cea2e8a9 2045 DIE(aTHX_ "Offset outside string");
4b0c4b6f 2046 }
1ed4b776
TC		 2047 offset += blen;
2048 } else if (offset > (IV)blen) {
4b0c4b6f 2049 Safefree(tmpbuf);
cea2e8a9 2050 DIE(aTHX_ "Offset outside string");
4b0c4b6f 2051 }
bbce6d69 2052 } else
a0d0e21e 2053 offset = 0;
1ed4b776
TC		 2054 if (length > blen - offset)
2055 length = blen - offset;
2056 buffer = buffer+offset;
2057
a7092146 2058#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 2059 if (IoTYPE(io) == IoTYPE_SOCKET) {
375ed12a 2060 retval = PerlSock_send(fd, buffer, length, 0);
a7092146
GS		 2061 }
2062 else
2063#endif
2064 {
94e4c244 2065 /* See the note at doio.c:do_print about filesize limits. --jhi */
375ed12a 2066 retval = PerlLIO_write(fd, buffer, length);
a7092146 2067 }
a0d0e21e 2068 }
c9cb0f41 2069
8c99d73e 2070 if (retval < 0)
a0d0e21e
LW		 2071 goto say_undef;
2072 SP = ORIGMARK;
4b0c4b6f 2073
a79db61d 2074 Safefree(tmpbuf);
8c99d73e
GS		 2075#if Size_t_size > IVSIZE
2076 PUSHn(retval);
2077#else
2078 PUSHi(retval);
2079#endif
a0d0e21e
LW		 2080 RETURN;
2081
2082 say_undef:
a79db61d 2083 Safefree(tmpbuf);
a0d0e21e
LW		 2084 SP = ORIGMARK;
2085 RETPUSHUNDEF;
2086}
2087
a0d0e21e
LW		 2088PP(pp_eof)
2089{
20b7effb 2090 dSP;
a0d0e21e 2091 GV *gv;
32e65323 2092 IO *io;
a5e1d062 2093 const MAGIC *mg;
bc0c81ca
NC		 2094 /*
2095 * in Perl 5.12 and later, the additional parameter is a bitmask:
2096 * 0 = eof
2097 * 1 = eof(FH)
2098 * 2 = eof() <- ARGV magic
2099 *
2100 * I'll rely on the compiler's trace flow analysis to decide whether to
2101 * actually assign this out here, or punt it into the only block where it is
2102 * used. Doing it out here is DRY on the condition logic.
2103 */
2104 unsigned int which;
a0d0e21e 2105
bc0c81ca 2106 if (MAXARG) {
32e65323 2107 gv = PL_last_in_gv = MUTABLE_GV(POPs); /* eof(FH) */
bc0c81ca
NC		 2108 which = 1;
2109 }
b5f55170
NC		 2110 else {
2111 EXTEND(SP, 1);
2112
bc0c81ca 2113 if (PL_op->op_flags & OPf_SPECIAL) {
b5f55170 2114 gv = PL_last_in_gv = GvEGVx(PL_argvgv); /* eof() - ARGV magic */
bc0c81ca
NC		 2115 which = 2;
2116 }
2117 else {
b5f55170 2118 gv = PL_last_in_gv; /* eof */
bc0c81ca
NC		 2119 which = 0;
2120 }
b5f55170 2121 }
32e65323
CS		 2122
2123 if (!gv)
eb699a9c 2124 RETPUSHYES;
32e65323
CS		 2125
2126 if ((io = GvIO(gv)) && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) {
3e0cb5de 2127 return tied_method1(SV_CONST(EOF), SP, MUTABLE_SV(io), mg, newSVuv(which));
146174a9 2128 }
4592e6ca 2129
32e65323
CS		 2130 if (!MAXARG && (PL_op->op_flags & OPf_SPECIAL)) { /* eof() */
2131 if (io && !IoIFP(io)) {
de5e9b5d 2132 if ((IoFLAGS(io) & IOf_START) && av_count(GvAVn(gv)) == 0) {
1037353b 2133 SV ** svp;
32e65323
CS		 2134 IoLINES(io) = 0;
2135 IoFLAGS(io) &= ~IOf_START;
d5eb9a46 2136 do_open6(gv, "-", 1, NULL, NULL, 0);
1037353b
DD		 2137 svp = &GvSV(gv);
2138 if (*svp) {
2139 SV * sv = *svp;
2140 sv_setpvs(sv, "-");
2141 SvSETMAGIC(sv);
2142 }
32e65323 2143 else
1037353b 2144 *svp = newSVpvs("-");
32e65323 2145 }
157fb5a1 2146 else if (!nextargv(gv, FALSE))
32e65323 2147 RETPUSHYES;
6136c704 2148 }
4592e6ca
NIS		 2149 }
2150
32e65323 2151 PUSHs(boolSV(do_eof(gv)));
a0d0e21e
LW		 2152 RETURN;
2153}
2154
2155PP(pp_tell)
2156{
20b7effb 2157 dSP; dTARGET;
301e8125 2158 GV *gv;
5b468f54 2159 IO *io;
a0d0e21e 2160
b64a1294 2161 if (MAXARG != 0 && (TOPs || POPs))
159b6efe 2162 PL_last_in_gv = MUTABLE_GV(POPs);
ac3697cd
NC		 2163 else
2164 EXTEND(SP, 1);
c4420975 2165 gv = PL_last_in_gv;
4592e6ca 2166
9c9f25b8
NC		 2167 io = GvIO(gv);
2168 if (io) {
a5e1d062 2169 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2170 if (mg) {
3e0cb5de 2171 return tied_method0(SV_CONST(TELL), SP, MUTABLE_SV(io), mg);
a79db61d 2172 }
4592e6ca 2173 }
f4817f32 2174 else if (!gv) {
f03173f2
RGS		 2175 if (!errno)
2176 SETERRNO(EBADF,RMS_IFI);
2177 PUSHi(-1);
2178 RETURN;
2179 }
4592e6ca 2180
146174a9 2181#if LSEEKSIZE > IVSIZE
9e831ddf 2182 PUSHn( (NV)do_tell(gv) );
146174a9 2183#else
9e831ddf 2184 PUSHi( (IV)do_tell(gv) );
146174a9 2185#endif
a0d0e21e
LW		 2186 RETURN;
2187}
2188
b1c05ba5
DM		 2189
2190/* also used for: pp_seek() */
2191
137443ea 2192PP(pp_sysseek)
2193{
20b7effb 2194 dSP;
1df70142 2195 const int whence = POPi;
146174a9 2196#if LSEEKSIZE > IVSIZE
7452cf6a 2197 const Off_t offset = (Off_t)SvNVx(POPs);
146174a9 2198#else
7452cf6a 2199 const Off_t offset = (Off_t)SvIVx(POPs);
146174a9 2200#endif
a0d0e21e 2201
159b6efe 2202 GV * const gv = PL_last_in_gv = MUTABLE_GV(POPs);
9c9f25b8 2203 IO *const io = GvIO(gv);
4592e6ca 2204
9c9f25b8 2205 if (io) {
a5e1d062 2206 const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
a79db61d 2207 if (mg) {
cb50131a 2208#if LSEEKSIZE > IVSIZE
74f0b550 2209 SV *const offset_sv = newSVnv((NV) offset);
cb50131a 2210#else
74f0b550 2211 SV *const offset_sv = newSViv(offset);
cb50131a 2212#endif
bc0c81ca 2213
3e0cb5de 2214 return tied_method2(SV_CONST(SEEK), SP, MUTABLE_SV(io), mg, offset_sv,
d682515d 2215 newSViv(whence));
a79db61d 2216 }
4592e6ca
NIS		 2217 }
2218
533c011a 2219 if (PL_op->op_type == OP_SEEK)
8903cb82 2220 PUSHs(boolSV(do_seek(gv, offset, whence)));
2221 else {
0bcc34c2 2222 const Off_t sought = do_sysseek(gv, offset, whence);
b448e4fe 2223 if (sought < 0)
146174a9
CB		 2224 PUSHs(&PL_sv_undef);
2225 else {
7452cf6a 2226 SV* const sv = sought ?
146174a9 2227#if LSEEKSIZE > IVSIZE
b448e4fe 2228 newSVnv((NV)sought)
146174a9 2229#else
b448e4fe 2230 newSViv(sought)
146174a9
CB		 2231#endif
2232 : newSVpvn(zero_but_true, ZBTLEN);
6e449a3a 2233 mPUSHs(sv);
146174a9 2234 }
8903cb82 2235 }
a0d0e21e
LW		 2236 RETURN;
2237}
2238
2239PP(pp_truncate)
2240{
39644a26 2241 dSP;
8c99d73e
GS		 2242 /* There seems to be no consensus on the length type of truncate()
2243 * and ftruncate(), both off_t and size_t have supporters. In
2244 * general one would think that when using large files, off_t is
2245 * at least as wide as size_t, so using an off_t should be okay. */
2246 /* XXX Configure probe for the length type of *truncate() needed XXX */
0bcc34c2 2247 Off_t len;
a0d0e21e 2248
25342a55 2249#if Off_t_size > IVSIZE
0bcc34c2 2250 len = (Off_t)POPn;
8c99d73e 2251#else
0bcc34c2 2252 len = (Off_t)POPi;
8c99d73e
GS		 2253#endif
2254 /* Checking for length < 0 is problematic as the type might or
301e8125 2255 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 2256 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2257 SETERRNO(0,0);
d05c1ba0 2258 {
5e0adc2d 2259 SV * const sv = POPs;
d05c1ba0
JH		 2260 int result = 1;
2261 GV *tmpgv;
090bf15b
SR		 2262 IO *io;
2263
42409c40
FC		 2264 if (PL_op->op_flags & OPf_SPECIAL
2265 ? (tmpgv = gv_fetchsv(sv, 0, SVt_PVIO), 1)
2266 : !!(tmpgv = MAYBE_DEREF_GV(sv)) ) {
9c9f25b8
NC		 2267 io = GvIO(tmpgv);
2268 if (!io)
090bf15b 2269 result = 0;
d05c1ba0 2270 else {
090bf15b 2271 PerlIO *fp;
090bf15b
SR		 2272 do_ftruncate_io:
2273 TAINT_PROPER("truncate");
2274 if (!(fp = IoIFP(io))) {
2275 result = 0;
2276 }
2277 else {
375ed12a
JH		 2278 int fd = PerlIO_fileno(fp);
2279 if (fd < 0) {
2280 SETERRNO(EBADF,RMS_IFI);
2281 result = 0;
2282 } else {
a9f17b43
JH		 2283 if (len < 0) {
2284 SETERRNO(EINVAL, LIB_INVARG);
2285 result = 0;
2286 } else {
2287 PerlIO_flush(fp);
cbdc8872 2288#ifdef HAS_TRUNCATE
a9f17b43 2289 if (ftruncate(fd, len) < 0)
301e8125 2290#else
a9f17b43 2291 if (my_chsize(fd, len) < 0)
cbdc8872 2292#endif
a9f17b43
JH		 2293 result = 0;
2294 }
375ed12a 2295 }
090bf15b 2296 }
d05c1ba0 2297 }
cbdc8872 2298 }
5e0adc2d 2299 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2300 io = MUTABLE_IO(SvRV(sv)); /* *main::FRED{IO} for example */
090bf15b 2301 goto do_ftruncate_io;
5e0adc2d
FC		 2302 }
2303 else {
2304 const char * const name = SvPV_nomg_const_nolen(sv);
d05c1ba0 2305 TAINT_PROPER("truncate");
cbdc8872 2306#ifdef HAS_TRUNCATE
d05c1ba0
JH		 2307 if (truncate(name, len) < 0)
2308 result = 0;
cbdc8872 2309#else
d05c1ba0 2310 {
d484df69
TC		 2311 int mode = O_RDWR;
2312 int tmpfd;
2313
2314#if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE)
2315 mode |= O_LARGEFILE; /* Transparently largefiley. */
2316#endif
2317#ifdef O_BINARY
2318 /* On open(), the Win32 CRT tries to seek around text
2319 * files using 32-bit offsets, which causes the open()
2320 * to fail on large files, so open in binary mode.
2321 */
2322 mode |= O_BINARY;
2323#endif
74df577f 2324 tmpfd = PerlLIO_open_cloexec(name, mode);
d05c1ba0 2325
375ed12a 2326 if (tmpfd < 0) {
cbdc8872 2327 result = 0;
375ed12a 2328 } else {
d05c1ba0
JH		 2329 if (my_chsize(tmpfd, len) < 0)
2330 result = 0;
2331 PerlLIO_close(tmpfd);
2332 }
cbdc8872 2333 }
a0d0e21e 2334#endif
d05c1ba0 2335 }
a0d0e21e 2336
d05c1ba0
JH		 2337 if (result)
2338 RETPUSHYES;
2339 if (!errno)
93189314 2340 SETERRNO(EBADF,RMS_IFI);
d05c1ba0
JH		 2341 RETPUSHUNDEF;
2342 }
a0d0e21e
LW		 2343}
2344
b1c05ba5
DM		 2345
2346/* also used for: pp_fcntl() */
2347
a0d0e21e
LW		 2348PP(pp_ioctl)
2349{
20b7effb 2350 dSP; dTARGET;
7452cf6a 2351 SV * const argsv = POPs;
1df70142 2352 const unsigned int func = POPu;
49225470 2353 int optype;
159b6efe 2354 GV * const gv = MUTABLE_GV(POPs);
8a6c0fcb 2355 IO * const io = GvIOn(gv);
a0d0e21e 2356 char *s;
324aa91a 2357 IV retval;
a0d0e21e 2358
8a6c0fcb 2359 if (!IoIFP(io)) {
51087808 2360 report_evil_fh(gv);
93189314 2361 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
a0d0e21e
LW		 2362 RETPUSHUNDEF;
2363 }
2364
748a9306 2365 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2366 STRLEN len;
324aa91a 2367 STRLEN need;
748a9306 2368 s = SvPV_force(argsv, len);
324aa91a
HF		 2369 need = IOCPARM_LEN(func);
2370 if (len < need) {
2371 s = Sv_Grow(argsv, need + 1);
2372 SvCUR_set(argsv, need);
a0d0e21e
LW		 2373 }
2374
748a9306 2375 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW		 2376 }
2377 else {
748a9306 2378 retval = SvIV(argsv);
c529f79d 2379 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW		 2380 }
2381
49225470 2382 optype = PL_op->op_type;
ed4b2e6b 2383 TAINT_PROPER(PL_op_desc[optype]);
a0d0e21e
LW		 2384
2385 if (optype == OP_IOCTL)
2386#ifdef HAS_IOCTL
76e3520e 2387 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2388#else
cea2e8a9 2389 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW		 2390#endif
2391 else
c214f4ad
WB		 2392#ifndef HAS_FCNTL
2393 DIE(aTHX_ "fcntl is not implemented");
8d698507 2394#elif defined(OS2) && defined(__EMX__)
760ac839 2395 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2396#else
760ac839 2397 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2398#endif
a0d0e21e 2399
6652bd42 2400#if defined(HAS_IOCTL) || defined(HAS_FCNTL)
748a9306
LW		 2401 if (SvPOK(argsv)) {
2402 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2403 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
53e06cf0 2404 OP_NAME(PL_op));
748a9306
LW		 2405 s[SvCUR(argsv)] = 0; /* put our null back */
2406 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW		 2407 }
2408
2409 if (retval == -1)
2410 RETPUSHUNDEF;
2411 if (retval != 0) {
2412 PUSHi(retval);
2413 }
2414 else {
8903cb82 2415 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e 2416 }
4808266b 2417#endif
c214f4ad 2418 RETURN;
a0d0e21e
LW		 2419}
2420
2421PP(pp_flock)
2422{
9cad6237 2423#ifdef FLOCK
20b7effb 2424 dSP; dTARGET;
a0d0e21e 2425 I32 value;
7452cf6a 2426 const int argtype = POPi;
1f28cbca 2427 GV * const gv = MUTABLE_GV(POPs);
9c9f25b8
NC		 2428 IO *const io = GvIO(gv);
2429 PerlIO *const fp = io ? IoIFP(io) : NULL;
16d20bd9 2430
0bcc34c2 2431 /* XXX Looks to me like io is always NULL at this point */
a0d0e21e 2432 if (fp) {
68dc0745 2433 (void)PerlIO_flush(fp);
76e3520e 2434 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2435 }
cb50131a 2436 else {
51087808 2437 report_evil_fh(gv);
a0d0e21e 2438 value = 0;
93189314 2439 SETERRNO(EBADF,RMS_IFI);
cb50131a 2440 }
a0d0e21e
LW		 2441 PUSHi(value);
2442 RETURN;
2443#else
56a94ef2 2444 DIE(aTHX_ PL_no_func, "flock");
a0d0e21e
LW		 2445#endif
2446}
2447
2448/* Sockets. */
2449
7627e6d0
NC		 2450#ifdef HAS_SOCKET
2451
a0d0e21e
LW		 2452PP(pp_socket)
2453{
20b7effb 2454 dSP;
7452cf6a
AL		 2455 const int protocol = POPi;
2456 const int type = POPi;
2457 const int domain = POPi;
159b6efe 2458 GV * const gv = MUTABLE_GV(POPs);
5805b585 2459 IO * const io = GvIOn(gv);
a0d0e21e
LW		 2460 int fd;
2461
57171420
BS		 2462 if (IoIFP(io))
2463 do_close(gv, FALSE);
2464
a0d0e21e 2465 TAINT_PROPER("socket");
74df577f 2466 fd = PerlSock_socket_cloexec(domain, type, protocol);
375ed12a 2467 if (fd < 0) {
a0d0e21e 2468 RETPUSHUNDEF;
375ed12a 2469 }
147e3846
KW		 2470 IoIFP(io) = PerlIO_fdopen(fd, "r" SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2471 IoOFP(io) = PerlIO_fdopen(fd, "w" SOCKET_OPEN_MODE);
50952442 2472 IoTYPE(io) = IoTYPE_SOCKET;
a0d0e21e 2473 if (!IoIFP(io) || !IoOFP(io)) {
760ac839
LW		 2474 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2475 if (IoOFP(io)) PerlIO_close(IoOFP(io));
6ad3d225 2476 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
a0d0e21e
LW		 2477 RETPUSHUNDEF;
2478 }
2479
2480 RETPUSHYES;
a0d0e21e 2481}
7627e6d0 2482#endif
a0d0e21e
LW		 2483
2484PP(pp_sockpair)
2485{
c95c94b1 2486#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
20b7effb 2487 dSP;
e0b7b5e2 2488 int fd[2];
7452cf6a
AL		 2489 const int protocol = POPi;
2490 const int type = POPi;
2491 const int domain = POPi;
e0b7b5e2 2492
159b6efe 2493 GV * const gv2 = MUTABLE_GV(POPs);
49561e08
FC		 2494 IO * const io2 = GvIOn(gv2);
2495 GV * const gv1 = MUTABLE_GV(POPs);
2496 IO * const io1 = GvIOn(gv1);
a0d0e21e 2497
49561e08 2498 if (IoIFP(io1))
dc0d0a5f 2499 do_close(gv1, FALSE);
49561e08 2500 if (IoIFP(io2))
dc0d0a5f 2501 do_close(gv2, FALSE);
57171420 2502
a0d0e21e 2503 TAINT_PROPER("socketpair");
74df577f 2504 if (PerlSock_socketpair_cloexec(domain, type, protocol, fd) < 0)
a0d0e21e 2505 RETPUSHUNDEF;
147e3846
KW		 2506 IoIFP(io1) = PerlIO_fdopen(fd[0], "r" SOCKET_OPEN_MODE);
2507 IoOFP(io1) = PerlIO_fdopen(fd[0], "w" SOCKET_OPEN_MODE);
50952442 2508 IoTYPE(io1) = IoTYPE_SOCKET;
147e3846
KW		 2509 IoIFP(io2) = PerlIO_fdopen(fd[1], "r" SOCKET_OPEN_MODE);
2510 IoOFP(io2) = PerlIO_fdopen(fd[1], "w" SOCKET_OPEN_MODE);
50952442 2511 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2512 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW		 2513 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2514 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2515 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW		 2516 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2517 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2518 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW		 2519 RETPUSHUNDEF;
2520 }
2521
2522 RETPUSHYES;
2523#else
cea2e8a9 2524 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW		 2525#endif
2526}
2527
7627e6d0
NC		 2528#ifdef HAS_SOCKET
2529
b1c05ba5
DM		 2530/* also used for: pp_connect() */
2531
a0d0e21e
LW		 2532PP(pp_bind)
2533{
20b7effb 2534 dSP;
7452cf6a 2535 SV * const addrsv = POPs;
349d4f2f
NC		 2536 /* OK, so on what platform does bind modify addr? */
2537 const char *addr;
159b6efe 2538 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2539 IO * const io = GvIOn(gv);
a0d0e21e 2540 STRLEN len;
e0b7b5e2 2541 int op_type;
375ed12a 2542 int fd;
a0d0e21e 2543
8a6c0fcb 2544 if (!IoIFP(io))
a0d0e21e 2545 goto nuts;
375ed12a
JH		 2546 fd = PerlIO_fileno(IoIFP(io));
2547 if (fd < 0)
2548 goto nuts;
a0d0e21e 2549
349d4f2f 2550 addr = SvPV_const(addrsv, len);
e0b7b5e2 2551 op_type = PL_op->op_type;
32b81f04
NC		 2552 TAINT_PROPER(PL_op_desc[op_type]);
2553 if ((op_type == OP_BIND
375ed12a
JH		 2554 ? PerlSock_bind(fd, (struct sockaddr *)addr, len)
2555 : PerlSock_connect(fd, (struct sockaddr *)addr, len))
32b81f04 2556 >= 0)
a0d0e21e
LW		 2557 RETPUSHYES;
2558 else
2559 RETPUSHUNDEF;
2560
7b52d656 2561 nuts:
fbcda526 2562 report_evil_fh(gv);
93189314 2563 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2564 RETPUSHUNDEF;
a0d0e21e
LW		 2565}
2566
2567PP(pp_listen)
2568{
20b7effb 2569 dSP;
7452cf6a 2570 const int backlog = POPi;
159b6efe 2571 GV * const gv = MUTABLE_GV(POPs);
8a6c0fcb 2572 IO * const io = GvIOn(gv);
a0d0e21e 2573
8a6c0fcb 2574 if (!IoIFP(io))
a0d0e21e
LW		 2575 goto nuts;
2576
6ad3d225 2577 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW		 2578 RETPUSHYES;
2579 else
2580 RETPUSHUNDEF;
2581
7b52d656 2582 nuts:
fbcda526 2583 report_evil_fh(gv);
93189314 2584 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2585 RETPUSHUNDEF;
a0d0e21e
LW		 2586}
2587
2588PP(pp_accept)
2589{
20b7effb 2590 dSP; dTARGET;
eb578fdb 2591 IO *nstio;
93d47a36 2592 char namebuf[MAXPATHLEN];
b5afd346 2593#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(__QNXNTO__)
93d47a36
JH		 2594 Sock_size_t len = sizeof (struct sockaddr_in);
2595#else
2596 Sock_size_t len = sizeof namebuf;
2597#endif
159b6efe
NC		 2598 GV * const ggv = MUTABLE_GV(POPs);
2599 GV * const ngv = MUTABLE_GV(POPs);
a0d0e21e
LW		 2600 int fd;
2601
8a6c0fcb 2602 IO * const gstio = GvIO(ggv);
a0d0e21e
LW		 2603 if (!gstio || !IoIFP(gstio))
2604 goto nuts;
2605
2606 nstio = GvIOn(ngv);
74df577f 2607 fd = PerlSock_accept_cloexec(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
e294cc5d
JH		 2608#if defined(OEMVS)
2609 if (len == 0) {
2610 /* Some platforms indicate zero length when an AF_UNIX client is
2611 * not bound. Simulate a non-zero-length sockaddr structure in
2612 * this case. */
2613 namebuf[0] = 0; /* sun_len */
2614 namebuf[1] = AF_UNIX; /* sun_family */
2615 len = 2;
2616 }
2617#endif
2618
a0d0e21e
LW		 2619 if (fd < 0)
2620 goto badexit;
a70048fb
AB		 2621 if (IoIFP(nstio))
2622 do_close(ngv, FALSE);
147e3846
KW		 2623 IoIFP(nstio) = PerlIO_fdopen(fd, "r" SOCKET_OPEN_MODE);
2624 IoOFP(nstio) = PerlIO_fdopen(fd, "w" SOCKET_OPEN_MODE);
50952442 2625 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2626 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW		 2627 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2628 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2629 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW		 2630 goto badexit;
2631 }
2632
381c1bae 2633#ifdef __SCO_VERSION__
93d47a36 2634 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
381c1bae 2635#endif
ed79a026 2636
93d47a36 2637 PUSHp(namebuf, len);
a0d0e21e
LW		 2638 RETURN;
2639
7b52d656 2640 nuts:
fbcda526 2641 report_evil_fh(ggv);
93189314 2642 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2643
7b52d656 2644 badexit:
a0d0e21e
LW		 2645 RETPUSHUNDEF;
2646
a0d0e21e
LW		 2647}
2648
2649PP(pp_shutdown)
2650{
20b7effb 2651 dSP; dTARGET;
7452cf6a 2652 const int how = POPi;
159b6efe 2653 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2654 IO * const io = GvIOn(gv);
a0d0e21e 2655
8a6c0fcb 2656 if (!IoIFP(io))
a0d0e21e
LW		 2657 goto nuts;
2658
6ad3d225 2659 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW		 2660 RETURN;
2661
7b52d656 2662 nuts:
fbcda526 2663 report_evil_fh(gv);
93189314 2664 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e 2665 RETPUSHUNDEF;
a0d0e21e
LW		 2666}
2667
b1c05ba5
DM		 2668
2669/* also used for: pp_gsockopt() */
2670
a0d0e21e
LW		 2671PP(pp_ssockopt)
2672{
20b7effb 2673 dSP;
7452cf6a 2674 const int optype = PL_op->op_type;
561b68a9 2675 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
7452cf6a
AL		 2676 const unsigned int optname = (unsigned int) POPi;
2677 const unsigned int lvl = (unsigned int) POPi;
159b6efe 2678 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2679 IO * const io = GvIOn(gv);
a0d0e21e 2680 int fd;
1e422769 2681 Sock_size_t len;
a0d0e21e 2682
49225470 2683 if (!IoIFP(io))
a0d0e21e
LW		 2684 goto nuts;
2685
760ac839 2686 fd = PerlIO_fileno(IoIFP(io));
375ed12a
JH		 2687 if (fd < 0)
2688 goto nuts;
a0d0e21e
LW		 2689 switch (optype) {
2690 case OP_GSOCKOPT:
748a9306 2691 SvGROW(sv, 257);
a0d0e21e 2692 (void)SvPOK_only(sv);
748a9306
LW		 2693 SvCUR_set(sv,256);
2694 *SvEND(sv) ='\0';
1e422769 2695 len = SvCUR(sv);
6ad3d225 2696 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2697 goto nuts2;
ee2276e5
JH		 2698#if defined(_AIX)
2699 /* XXX Configure test: does getsockopt set the length properly? */
2700 if (len == 256)
2701 len = sizeof(int);
2702#endif
1e422769 2703 SvCUR_set(sv, len);
748a9306 2704 *SvEND(sv) ='\0';
a0d0e21e
LW		 2705 PUSHs(sv);
2706 break;
2707 case OP_SSOCKOPT: {
822c8b4d 2708 const char *buf;
1e422769 2709 int aint;
2710 if (SvPOKp(sv)) {
2d8e6c8d 2711 STRLEN l;
822c8b4d 2712 buf = SvPV_const(sv, l);
2d8e6c8d 2713 len = l;
1e422769 2714 }
56ee1660 2715 else {
a0d0e21e 2716 aint = (int)SvIV(sv);
822c8b4d 2717 buf = (const char *) &aint;
a0d0e21e
LW		 2718 len = sizeof(int);
2719 }
6ad3d225 2720 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2721 goto nuts2;
3280af22 2722 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 2723 }
2724 break;
2725 }
2726 RETURN;
2727
7b52d656 2728 nuts:
fbcda526 2729 report_evil_fh(gv);
93189314 2730 SETERRNO(EBADF,SS_IVCHAN);
7b52d656 2731 nuts2:
a0d0e21e
LW		 2732 RETPUSHUNDEF;
2733
a0d0e21e
LW		 2734}
2735
b1c05ba5
DM		 2736
2737/* also used for: pp_getsockname() */
2738
a0d0e21e
LW		 2739PP(pp_getpeername)
2740{
20b7effb 2741 dSP;
7452cf6a 2742 const int optype = PL_op->op_type;
159b6efe 2743 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 2744 IO * const io = GvIOn(gv);
7452cf6a 2745 Sock_size_t len;
a0d0e21e
LW		 2746 SV *sv;
2747 int fd;
a0d0e21e 2748
49225470 2749 if (!IoIFP(io))
a0d0e21e
LW		 2750 goto nuts;
2751
5fd8dd0d
TK		 2752#ifdef HAS_SOCKADDR_STORAGE
2753 len = sizeof(struct sockaddr_storage);
2754#else
1e422769 2755 len = 256;
5fd8dd0d
TK		 2756#endif
2757 sv = sv_2mortal(newSV(len+1));
2758 (void)SvPOK_only(sv);
1e422769 2759 SvCUR_set(sv, len);
748a9306 2760 *SvEND(sv) ='\0';
760ac839 2761 fd = PerlIO_fileno(IoIFP(io));
375ed12a
JH		 2762 if (fd < 0)
2763 goto nuts;
a0d0e21e
LW		 2764 switch (optype) {
2765 case OP_GETSOCKNAME:
6ad3d225 2766 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW		 2767 goto nuts2;
2768 break;
2769 case OP_GETPEERNAME:
6ad3d225 2770 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2771 goto nuts2;
490ab354
JH		 2772#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2773 {
2774 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";
2775 /* If the call succeeded, make sure we don't have a zeroed port/addr */
349d4f2f 2776 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2fbb330f 2777 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
490ab354 2778 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2779 goto nuts2;
490ab354
JH		 2780 }
2781 }
2782#endif
a0d0e21e
LW		 2783 break;
2784 }
13826f2c
CS		 2785#ifdef BOGUS_GETNAME_RETURN
2786 /* Interactive Unix, getpeername() and getsockname()
2787 does not return valid namelen */
1e422769 2788 if (len == BOGUS_GETNAME_RETURN)
2789 len = sizeof(struct sockaddr);
13826f2c 2790#endif
1e422769 2791 SvCUR_set(sv, len);
748a9306 2792 *SvEND(sv) ='\0';
a0d0e21e
LW		 2793 PUSHs(sv);
2794 RETURN;
2795
7b52d656 2796 nuts:
fbcda526 2797 report_evil_fh(gv);
93189314 2798 SETERRNO(EBADF,SS_IVCHAN);
7b52d656 2799 nuts2:
a0d0e21e 2800 RETPUSHUNDEF;
7627e6d0 2801}
a0d0e21e 2802
a0d0e21e 2803#endif
a0d0e21e
LW		 2804
2805/* Stat calls. */
2806
b1c05ba5
DM		 2807/* also used for: pp_lstat() */
2808
a0d0e21e
LW		 2809PP(pp_stat)
2810{
39644a26 2811 dSP;
10edeb5d 2812 GV *gv = NULL;
55dd8d50 2813 IO *io = NULL;
1c23e2bd 2814 U8 gimme;
a0d0e21e 2815 I32 max = 13;
109c43ed 2816 SV* sv;
a0d0e21e 2817
109c43ed
FC		 2818 if (PL_op->op_flags & OPf_REF ? (gv = cGVOP_gv, 1)
2819 : !!(sv=POPs, gv = MAYBE_DEREF_GV(sv))) {
8a4e5b40 2820 if (PL_op->op_type == OP_LSTAT) {
5d3e98de 2821 if (gv != PL_defgv) {
5d329e6e 2822 do_fstat_warning_check:
a2a5de95 2823 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
147e3846 2824 "lstat() on filehandle%s%" SVf,
93fad930
FC		 2825 gv ? " " : "",
2826 SVfARG(gv
bf29d05f
BF		 2827 ? sv_2mortal(newSVhek(GvENAME_HEK(gv)))
2828 : &PL_sv_no));
5d3e98de 2829 } else if (PL_laststype != OP_LSTAT)
b042df57 2830 /* diag_listed_as: The stat preceding %s wasn't an lstat */
8a4e5b40 2831 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
8a4e5b40
DD		 2832 }
2833
97c8f3e6
Z		 2834 if (gv == PL_defgv) {
2835 if (PL_laststatval < 0)
2836 SETERRNO(EBADF,RMS_IFI);
2837 } else {
0d5064f1 2838 do_fstat_have_io:
3280af22 2839 PL_laststype = OP_STAT;
0d5064f1 2840 PL_statgv = gv ? gv : (GV *)io;
60e13354 2841 SvPVCLEAR(PL_statname);
5228a96c 2842 if(gv) {
ad02613c 2843 io = GvIO(gv);
0d5064f1
FC		 2844 }
2845 if (io) {
5228a96c 2846 if (IoIFP(io)) {
375ed12a
JH		 2847 int fd = PerlIO_fileno(IoIFP(io));
2848 if (fd < 0) {
97c8f3e6 2849 report_evil_fh(gv);
375ed12a
JH		 2850 PL_laststatval = -1;
2851 SETERRNO(EBADF,RMS_IFI);
2852 } else {
2853 PL_laststatval = PerlLIO_fstat(fd, &PL_statcache);
375ed12a 2854 }
5228a96c 2855 } else if (IoDIRP(io)) {
5228a96c 2856 PL_laststatval =
3497a01f 2857 PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache);
5228a96c 2858 } else {
97c8f3e6 2859 report_evil_fh(gv);
5228a96c 2860 PL_laststatval = -1;
97c8f3e6 2861 SETERRNO(EBADF,RMS_IFI);
5228a96c 2862 }
97c8f3e6
Z		 2863 } else {
2864 report_evil_fh(gv);
2865 PL_laststatval = -1;
2866 SETERRNO(EBADF,RMS_IFI);
2867 }
5228a96c
SP		 2868 }
2869
9ddeeac9 2870 if (PL_laststatval < 0) {
a0d0e21e 2871 max = 0;
9ddeeac9 2872 }
a0d0e21e
LW		 2873 }
2874 else {
7cb3f959 2875 const char *file;
a155eb05
TC		 2876 const char *temp;
2877 STRLEN len;
109c43ed 2878 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
a45c7426 2879 io = MUTABLE_IO(SvRV(sv));
ad02613c
SP		 2880 if (PL_op->op_type == OP_LSTAT)
2881 goto do_fstat_warning_check;
2882 goto do_fstat_have_io;
2883 }
4bac9ae4 2884 SvTAINTED_off(PL_statname); /* previous tainting irrelevant */
a155eb05
TC		 2885 temp = SvPV_nomg_const(sv, len);
2886 sv_setpv(PL_statname, temp);
a0714e2c 2887 PL_statgv = NULL;
533c011a 2888 PL_laststype = PL_op->op_type;
7cb3f959 2889 file = SvPV_nolen_const(PL_statname);
a155eb05
TC		 2890 if (!IS_SAFE_PATHNAME(temp, len, OP_NAME(PL_op))) {
2891 PL_laststatval = -1;
2892 }
2893 else if (PL_op->op_type == OP_LSTAT)
7cb3f959 2894 PL_laststatval = PerlLIO_lstat(file, &PL_statcache);
a0d0e21e 2895 else
7cb3f959 2896 PL_laststatval = PerlLIO_stat(file, &PL_statcache);
3280af22 2897 if (PL_laststatval < 0) {
7cb3f959 2898 if (ckWARN(WARN_NEWLINE) && should_warn_nl(file)) {
5d37acd6 2899 /* PL_warn_nl is constant */
7347ee54 2900 GCC_DIAG_IGNORE_STMT(-Wformat-nonliteral);
9014280d 2901 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
7347ee54 2902 GCC_DIAG_RESTORE_STMT;
5d37acd6 2903 }
a0d0e21e
LW		 2904 max = 0;
2905 }
2906 }
2907
54310121 2908 gimme = GIMME_V;
2909 if (gimme != G_ARRAY) {
2910 if (gimme != G_VOID)
2911 XPUSHs(boolSV(max));
2912 RETURN;
a0d0e21e
LW		 2913 }
2914 if (max) {
36477c24 2915 EXTEND(SP, max);
2916 EXTEND_MORTAL(max);
6e449a3a 2917 mPUSHi(PL_statcache.st_dev);
2e8ea15a
Z		 2918 {
2919 /*
2920 * We try to represent st_ino as a native IV or UV where
2921 * possible, but fall back to a decimal string where
2922 * necessary. The code to generate these decimal strings
2923 * is quite obtuse, because (a) we're portable to non-POSIX
2924 * platforms where st_ino might be signed; (b) we didn't
2925 * necessarily detect at Configure time whether st_ino is
2926 * signed; (c) we're portable to non-POSIX platforms where
2927 * ino_t isn't defined, so have no name for the type of
2928 * st_ino; and (d) sprintf() doesn't necessarily support
2929 * integers as large as st_ino.
2930 */
009165e9 2931 bool neg;
2e8ea15a 2932 Stat_t s;
7347ee54
Z		 2933 CLANG_DIAG_IGNORE_STMT(-Wtautological-compare);
2934 GCC_DIAG_IGNORE_STMT(-Wtype-limits);
009165e9 2935 neg = PL_statcache.st_ino < 0;
7347ee54
Z		 2936 GCC_DIAG_RESTORE_STMT;
2937 CLANG_DIAG_RESTORE_STMT;
009165e9 2938 if (neg) {
2e8ea15a
Z		 2939 s.st_ino = (IV)PL_statcache.st_ino;
2940 if (LIKELY(s.st_ino == PL_statcache.st_ino)) {
2941 mPUSHi(s.st_ino);
2942 } else {
2943 char buf[sizeof(s.st_ino)*3+1], *p;
2944 s.st_ino = PL_statcache.st_ino;
2945 for (p = buf + sizeof(buf); p != buf+1; ) {
2946 Stat_t t;
2947 t.st_ino = s.st_ino / 10;
2948 *--p = '0' + (int)(t.st_ino*10 - s.st_ino);
2949 s.st_ino = t.st_ino;
2950 }
2951 while (*p == '0')
2952 p++;
2953 *--p = '-';
2954 mPUSHp(p, buf+sizeof(buf) - p);
2955 }
009165e9 2956 } else {
2e8ea15a
Z		 2957 s.st_ino = (UV)PL_statcache.st_ino;
2958 if (LIKELY(s.st_ino == PL_statcache.st_ino)) {
2959 mPUSHu(s.st_ino);
2960 } else {
2961 char buf[sizeof(s.st_ino)*3], *p;
2962 s.st_ino = PL_statcache.st_ino;
2963 for (p = buf + sizeof(buf); p != buf; ) {
2964 Stat_t t;
2965 t.st_ino = s.st_ino / 10;
2966 *--p = '0' + (int)(s.st_ino - t.st_ino*10);
2967 s.st_ino = t.st_ino;
2968 }
2969 while (*p == '0')
2970 p++;
2971 mPUSHp(p, buf+sizeof(buf) - p);
2972 }
2973 }
2974 }
6e449a3a
MHM		 2975 mPUSHu(PL_statcache.st_mode);
2976 mPUSHu(PL_statcache.st_nlink);
dfff4baf
BF		 2977
2978 sv_setuid(PUSHmortal, PL_statcache.st_uid);
2979 sv_setgid(PUSHmortal, PL_statcache.st_gid);
2980
cbdc8872 2981#ifdef USE_STAT_RDEV
6e449a3a 2982 mPUSHi(PL_statcache.st_rdev);
cbdc8872 2983#else
84bafc02 2984 PUSHs(newSVpvs_flags("", SVs_TEMP));
cbdc8872 2985#endif
146174a9 2986#if Off_t_size > IVSIZE
6e449a3a 2987 mPUSHn(PL_statcache.st_size);
146174a9 2988#else
6e449a3a 2989 mPUSHi(PL_statcache.st_size);
146174a9 2990#endif
cbdc8872 2991#ifdef BIG_TIME
6e449a3a
MHM		 2992 mPUSHn(PL_statcache.st_atime);
2993 mPUSHn(PL_statcache.st_mtime);
2994 mPUSHn(PL_statcache.st_ctime);
cbdc8872 2995#else
6e449a3a
MHM		 2996 mPUSHi(PL_statcache.st_atime);
2997 mPUSHi(PL_statcache.st_mtime);
2998 mPUSHi(PL_statcache.st_ctime);
cbdc8872 2999#endif
a0d0e21e 3000#ifdef USE_STAT_BLOCKS
6e449a3a
MHM		 3001 mPUSHu(PL_statcache.st_blksize);
3002 mPUSHu(PL_statcache.st_blocks);
a0d0e21e 3003#else
84bafc02
NC		 3004 PUSHs(newSVpvs_flags("", SVs_TEMP));
3005 PUSHs(newSVpvs_flags("", SVs_TEMP));
a0d0e21e
LW		 3006#endif
3007 }
3008 RETURN;
3009}
3010
6c48f025
NC		 3011/* All filetest ops avoid manipulating the perl stack pointer in their main
3012 bodies (since commit d2c4d2d1e22d3125), and return using either
3013 S_ft_return_false() or S_ft_return_true(). These two helper functions are
3014 the only two which manipulate the perl stack. To ensure that no stack
3015 manipulation macros are used, the filetest ops avoid defining a local copy
3016 of the stack pointer with dSP. */
3017
8db8f6b6
FC		 3018/* If the next filetest is stacked up with this one
3019 (PL_op->op_private & OPpFT_STACKING), we leave
3020 the original argument on the stack for success,
3021 and skip the stacked operators on failure.
3022 The next few macros/functions take care of this.
3023*/
3024
3025static OP *
9a6b02e8 3026S_ft_return_false(pTHX_ SV *ret) {
8db8f6b6 3027 OP *next = NORMAL;
697f9d37
NC		 3028 dSP;
3029
226b9201 3030 if (PL_op->op_flags & OPf_REF) XPUSHs(ret);
8db8f6b6
FC		 3031 else SETs(ret);
3032 PUTBACK;
697f9d37 3033
9a6b02e8 3034 if (PL_op->op_private & OPpFT_STACKING) {
1af91490 3035 while (next && OP_IS_FILETEST(next->op_type)
9a6b02e8
NC		 3036 && next->op_private & OPpFT_STACKED)
3037 next = next->op_next;
3038 }
8db8f6b6
FC		 3039 return next;
3040}
3041
07ed4d4b
NC		 3042PERL_STATIC_INLINE OP *
3043S_ft_return_true(pTHX_ SV *ret) {
3044 dSP;
3045 if (PL_op->op_flags & OPf_REF)
3046 XPUSHs(PL_op->op_private & OPpFT_STACKING ? (SV *)cGVOP_gv : (ret));
3047 else if (!(PL_op->op_private & OPpFT_STACKING))
3048 SETs(ret);
3049 PUTBACK;
3050 return NORMAL;
3051}
8db8f6b6 3052
48d023d6
NC		 3053#define FT_RETURNNO return S_ft_return_false(aTHX_ &PL_sv_no)
3054#define FT_RETURNUNDEF return S_ft_return_false(aTHX_ &PL_sv_undef)
3055#define FT_RETURNYES return S_ft_return_true(aTHX_ &PL_sv_yes)
8db8f6b6 3056
6f1401dc 3057#define tryAMAGICftest_MG(chr) STMT_START { \
d2f67720 3058 if ( (SvFLAGS(*PL_stack_sp) & (SVf_ROK|SVs_GMG)) \
8db8f6b6
FC		 3059 && PL_op->op_flags & OPf_KIDS) { \
3060 OP *next = S_try_amagic_ftest(aTHX_ chr); \
3061 if (next) return next; \
3062 } \
6f1401dc
DM		 3063 } STMT_END
3064
8db8f6b6 3065STATIC OP *
6f1401dc 3066S_try_amagic_ftest(pTHX_ char chr) {
d2f67720 3067 SV *const arg = *PL_stack_sp;
6f1401dc
DM		 3068
3069 assert(chr != '?');
f877e124 3070 if (!(PL_op->op_private & OPpFT_STACKED)) SvGETMAGIC(arg);
6f1401dc 3071
d2f67720 3072 if (SvAMAGIC(arg))
6f1401dc
DM		 3073 {
3074 const char tmpchr = chr;
6f1401dc
DM		 3075 SV * const tmpsv = amagic_call(arg,
3076 newSVpvn_flags(&tmpchr, 1, SVs_TEMP),
3077 ftest_amg, AMGf_unary);
3078
3079 if (!tmpsv)
8db8f6b6 3080 return NULL;
6f1401dc 3081
48d023d6
NC		 3082 return SvTRUE(tmpsv)
3083 ? S_ft_return_true(aTHX_ tmpsv) : S_ft_return_false(aTHX_ tmpsv);
6f1401dc 3084 }
8db8f6b6 3085 return NULL;
6f1401dc
DM		 3086}
3087
3088
b1c05ba5
DM		 3089/* also used for: pp_fteexec() pp_fteread() pp_ftewrite() pp_ftrexec()
3090 * pp_ftrwrite() */
3091
a0d0e21e
LW		 3092PP(pp_ftrread)
3093{
9cad6237 3094 I32 result;
af9e49b4 3095 /* Not const, because things tweak this below. Not bool, because there's
f3574cc6 3096 no guarantee that OPpFT_ACCESS is <= CHAR_MAX */
af9e49b4
NC		 3097#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
3098 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
3099 /* Giving some sort of initial value silences compilers. */
3100# ifdef R_OK
3101 int access_mode = R_OK;
3102# else
3103 int access_mode = 0;
3104# endif
5ff3f7a4 3105#else
af9e49b4
NC		 3106 /* access_mode is never used, but leaving use_access in makes the
3107 conditional compiling below much clearer. */
3108 I32 use_access = 0;
5ff3f7a4 3109#endif
2dcac756 3110 Mode_t stat_mode = S_IRUSR;
a0d0e21e 3111
af9e49b4 3112 bool effective = FALSE;
07fe7c6a 3113 char opchar = '?';
af9e49b4 3114
7fb13887
BM		 3115 switch (PL_op->op_type) {
3116 case OP_FTRREAD: opchar = 'R'; break;
3117 case OP_FTRWRITE: opchar = 'W'; break;
3118 case OP_FTREXEC: opchar = 'X'; break;
3119 case OP_FTEREAD: opchar = 'r'; break;
3120 case OP_FTEWRITE: opchar = 'w'; break;
3121 case OP_FTEEXEC: opchar = 'x'; break;
3122 }
6f1401dc 3123 tryAMAGICftest_MG(opchar);
7fb13887 3124
af9e49b4
NC		 3125 switch (PL_op->op_type) {
3126 case OP_FTRREAD:
3127#if !(defined(HAS_ACCESS) && defined(R_OK))
3128 use_access = 0;
3129#endif
3130 break;
3131
3132 case OP_FTRWRITE:
5ff3f7a4 3133#if defined(HAS_ACCESS) && defined(W_OK)
af9e49b4 3134 access_mode = W_OK;
5ff3f7a4 3135#else
af9e49b4 3136 use_access = 0;
5ff3f7a4 3137#endif
af9e49b4
NC		 3138 stat_mode = S_IWUSR;
3139 break;
a0d0e21e 3140
af9e49b4 3141 case OP_FTREXEC:
5ff3f7a4 3142#if defined(HAS_ACCESS) && defined(X_OK)
af9e49b4 3143 access_mode = X_OK;
5ff3f7a4 3144#else
af9e49b4 3145 use_access = 0;
5ff3f7a4 3146#endif
af9e49b4
NC		 3147 stat_mode = S_IXUSR;
3148 break;
a0d0e21e 3149
af9e49b4 3150 case OP_FTEWRITE:
faee0e31 3151#ifdef PERL_EFF_ACCESS
af9e49b4 3152 access_mode = W_OK;
5ff3f7a4 3153#endif
af9e49b4 3154 stat_mode = S_IWUSR;
924ba076 3155 /* FALLTHROUGH */
a0d0e21e 3156
af9e49b4
NC		 3157 case OP_FTEREAD:
3158#ifndef PERL_EFF_ACCESS
3159 use_access = 0;
3160#endif
3161 effective = TRUE;
3162 break;
3163
af9e49b4 3164 case OP_FTEEXEC:
faee0e31 3165#ifdef PERL_EFF_ACCESS
b376053d 3166 access_mode = X_OK;
5ff3f7a4 3167#else
af9e49b4 3168 use_access = 0;
5ff3f7a4 3169#endif
af9e49b4
NC		 3170 stat_mode = S_IXUSR;
3171 effective = TRUE;
3172 break;
3173 }
a0d0e21e 3174
af9e49b4
NC		 3175 if (use_access) {
3176#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
a155eb05
TC		 3177 STRLEN len;
3178 const char *name = SvPV(*PL_stack_sp, len);
3179 if (!IS_SAFE_PATHNAME(name, len, OP_NAME(PL_op))) {
3180 result = -1;
3181 }
3182 else if (effective) {
af9e49b4
NC		 3183# ifdef PERL_EFF_ACCESS
3184 result = PERL_EFF_ACCESS(name, access_mode);
3185# else
3186 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
3187 OP_NAME(PL_op));
3188# endif
3189 }
3190 else {
3191# ifdef HAS_ACCESS
3192 result = access(name, access_mode);
3193# else
3194 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
3195# endif
3196 }
5ff3f7a4 3197 if (result == 0)
d2c4d2d1 3198 FT_RETURNYES;
5ff3f7a4 3199 if (result < 0)
d2c4d2d1
FC		 3200 FT_RETURNUNDEF;
3201 FT_RETURNNO;
af9e49b4 3202#endif
22865c03 3203 }
af9e49b4 3204
40c852de 3205 result = my_stat_flags(0);
a0d0e21e 3206 if (result < 0)
8db8f6b6 3207 FT_RETURNUNDEF;
af9e49b4 3208 if (cando(stat_mode, effective, &PL_statcache))
8db8f6b6
FC		 3209 FT_RETURNYES;
3210 FT_RETURNNO;
a0d0e21e
LW		 3211}
3212
b1c05ba5
DM		 3213
3214/* also used for: pp_ftatime() pp_ftctime() pp_ftmtime() pp_ftsize() */
3215
a0d0e21e
LW		 3216PP(pp_ftis)
3217{
fbb0b3b3 3218 I32 result;
d7f0a2f4 3219 const int op_type = PL_op->op_type;
07fe7c6a 3220 char opchar = '?';
07fe7c6a
BM		 3221
3222 switch (op_type) {
3223 case OP_FTIS: opchar = 'e'; break;
3224 case OP_FTSIZE: opchar = 's'; break;
3225 case OP_FTMTIME: opchar = 'M'; break;
3226 case OP_FTCTIME: opchar = 'C'; break;
3227 case OP_FTATIME: opchar = 'A'; break;
3228 }
6f1401dc 3229 tryAMAGICftest_MG(opchar);
07fe7c6a 3230
40c852de 3231 result = my_stat_flags(0);
a0d0e21e 3232 if (result < 0)
8db8f6b6 3233 FT_RETURNUNDEF;
d7f0a2f4 3234 if (op_type == OP_FTIS)
8db8f6b6 3235 FT_RETURNYES;
957b0e1d 3236 {
d7f0a2f4
NC		 3237 /* You can't dTARGET inside OP_FTIS, because you'll get
3238 "panic: pad_sv po" - the op is not flagged to have a target. */
957b0e1d 3239 dTARGET;
d7f0a2f4 3240 switch (op_type) {
957b0e1d
NC		 3241 case OP_FTSIZE:
3242#if Off_t_size > IVSIZE
8db8f6b6 3243 sv_setnv(TARG, (NV)PL_statcache.st_size);
957b0e1d 3244#else
8db8f6b6 3245 sv_setiv(TARG, (IV)PL_statcache.st_size);
957b0e1d
NC		 3246#endif
3247 break;
3248 case OP_FTMTIME:
8db8f6b6
FC		 3249 sv_setnv(TARG,
3250 ((NV)PL_basetime - PL_statcache.st_mtime) / 86400.0 );
957b0e1d
NC		 3251 break;
3252 case OP_FTATIME:
8db8f6b6
FC		 3253 sv_setnv(TARG,
3254 ((NV)PL_basetime - PL_statcache.st_atime) / 86400.0 );
957b0e1d
NC		 3255 break;
3256 case OP_FTCTIME:
8db8f6b6
FC		 3257 sv_setnv(TARG,
3258 ((NV)PL_basetime - PL_statcache.st_ctime) / 86400.0 );
957b0e1d
NC		 3259 break;
3260 }
8db8f6b6 3261 SvSETMAGIC(TARG);
f4c975aa 3262 return SvTRUE_nomg_NN(TARG)
48d023d6 3263 ? S_ft_return_true(aTHX_ TARG) : S_ft_return_false(aTHX_ TARG);
957b0e1d 3264 }
a0d0e21e
LW		 3265}
3266
b1c05ba5
DM		 3267
3268/* also used for: pp_ftblk() pp_ftchr() pp_ftdir() pp_fteowned()
3269 * pp_ftfile() pp_ftpipe() pp_ftsgid() pp_ftsock()
3270 * pp_ftsuid() pp_ftsvtx() pp_ftzero() */
3271
a0d0e21e
LW		 3272PP(pp_ftrowned)
3273{
fbb0b3b3 3274 I32 result;
07fe7c6a 3275 char opchar = '?';
17ad201a 3276
7fb13887
BM		 3277 switch (PL_op->op_type) {
3278 case OP_FTROWNED: opchar = 'O'; break;
3279 case OP_FTEOWNED: opchar = 'o'; break;
3280 case OP_FTZERO: opchar = 'z'; break;
3281 case OP_FTSOCK: opchar = 'S'; break;
3282 case OP_FTCHR: opchar = 'c'; break;
3283 case OP_FTBLK: opchar = 'b'; break;
3284 case OP_FTFILE: opchar = 'f'; break;
3285 case OP_FTDIR: opchar = 'd'; break;
3286 case OP_FTPIPE: opchar = 'p'; break;
3287 case OP_FTSUID: opchar = 'u'; break;
3288 case OP_FTSGID: opchar = 'g'; break;
3289 case OP_FTSVTX: opchar = 'k'; break;
3290 }
6f1401dc 3291 tryAMAGICftest_MG(opchar);
7fb13887 3292
40c852de 3293 result = my_stat_flags(0);
a0d0e21e 3294 if (result < 0)
8db8f6b6 3295 FT_RETURNUNDEF;
f1cb2d48
NC		 3296 switch (PL_op->op_type) {
3297 case OP_FTROWNED:
985213f2 3298 if (PL_statcache.st_uid == PerlProc_getuid())
8db8f6b6 3299 FT_RETURNYES;
f1cb2d48
NC		 3300 break;
3301 case OP_FTEOWNED:
985213f2 3302 if (PL_statcache.st_uid == PerlProc_geteuid())
8db8f6b6 3303 FT_RETURNYES;
f1cb2d48
NC		 3304 break;
3305 case OP_FTZERO:
3306 if (PL_statcache.st_size == 0)
8db8f6b6 3307 FT_RETURNYES;
f1cb2d48
NC		 3308 break;
3309 case OP_FTSOCK:
3310 if (S_ISSOCK(PL_statcache.st_mode))
8db8f6b6 3311 FT_RETURNYES;
f1cb2d48
NC		 3312 break;
3313 case OP_FTCHR:
3314 if (S_ISCHR(PL_statcache.st_mode))
8db8f6b6 3315 FT_RETURNYES;
f1cb2d48
NC		 3316 break;
3317 case OP_FTBLK:
3318 if (S_ISBLK(PL_statcache.st_mode))
8db8f6b6 3319 FT_RETURNYES;
f1cb2d48
NC		 3320 break;
3321 case OP_FTFILE:
3322 if (S_ISREG(PL_statcache.st_mode))
8db8f6b6 3323 FT_RETURNYES;
f1cb2d48
NC		 3324 break;
3325 case OP_FTDIR:
3326 if (S_ISDIR(PL_statcache.st_mode))
8db8f6b6 3327 FT_RETURNYES;
f1cb2d48
NC		 3328 break;
3329 case OP_FTPIPE:
3330 if (S_ISFIFO(PL_statcache.st_mode))
8db8f6b6 3331 FT_RETURNYES;
f1cb2d48 3332 break;
a0d0e21e 3333#ifdef S_ISUID
17ad201a
NC		 3334 case OP_FTSUID:
3335 if (PL_statcache.st_mode & S_ISUID)
8db8f6b6 3336 FT_RETURNYES;
17ad201a 3337 break;
a0d0e21e 3338#endif
a0d0e21e 3339#ifdef S_ISGID
17ad201a
NC		 3340 case OP_FTSGID:
3341 if (PL_statcache.st_mode & S_ISGID)
8db8f6b6 3342 FT_RETURNYES;
17ad201a
NC		 3343 break;
3344#endif
3345#ifdef S_ISVTX
3346 case OP_FTSVTX:
3347 if (PL_statcache.st_mode & S_ISVTX)
8db8f6b6 3348 FT_RETURNYES;
17ad201a 3349 break;
a0d0e21e 3350#endif
17ad201a 3351 }
8db8f6b6 3352 FT_RETURNNO;
a0d0e21e
LW		 3353}
3354
17ad201a 3355PP(pp_ftlink)
a0d0e21e 3356{
500ff13f 3357 I32 result;
07fe7c6a 3358
6f1401dc 3359 tryAMAGICftest_MG('l');
40c852de 3360 result = my_lstat_flags(0);
500ff13f 3361
a0d0e21e 3362 if (result < 0)
8db8f6b6 3363 FT_RETURNUNDEF;
17ad201a 3364 if (S_ISLNK(PL_statcache.st_mode))
8db8f6b6
FC		 3365 FT_RETURNYES;
3366 FT_RETURNNO;
a0d0e21e
LW		 3367}
3368
3369PP(pp_fttty)
3370{
a0d0e21e
LW		 3371 int fd;
3372 GV *gv;
0784aae0 3373 char *name = NULL;
40c852de 3374 STRLEN namelen;
22ff3130 3375 UV uv;
fb73857a 3376
6f1401dc 3377 tryAMAGICftest_MG('t');
07fe7c6a 3378
533c011a 3379 if (PL_op->op_flags & OPf_REF)
146174a9 3380 gv = cGVOP_gv;
e5e154d2 3381 else {
d2f67720 3382 SV *tmpsv = *PL_stack_sp;
e5e154d2 3383 if (!(gv = MAYBE_DEREF_GV_nomg(tmpsv))) {
40c852de
DM		 3384 name = SvPV_nomg(tmpsv, namelen);
3385 gv = gv_fetchpvn_flags(name, namelen, SvUTF8(tmpsv), SVt_PVIO);
e5e154d2 3386 }
40c852de 3387 }
fb73857a 3388
a0d0e21e 3389 if (GvIO(gv) && IoIFP(GvIOp(gv)))
760ac839 3390 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
22ff3130
HS		 3391 else if (name && isDIGIT(*name) && grok_atoUV(name, &uv, NULL) && uv <= PERL_INT_MAX)
3392 fd = (int)uv;
a0d0e21e 3393 else
97c8f3e6 3394 fd = -1;
375ed12a
JH		 3395 if (fd < 0) {
3396 SETERRNO(EBADF,RMS_IFI);
3397 FT_RETURNUNDEF;
3398 }
6ad3d225 3399 if (PerlLIO_isatty(fd))
8db8f6b6
FC		 3400 FT_RETURNYES;
3401 FT_RETURNNO;
a0d0e21e
LW		 3402}
3403
b1c05ba5
DM		 3404
3405/* also used for: pp_ftbinary() */
3406
a0d0e21e
LW		 3407PP(pp_fttext)
3408{
a0d0e21e 3409 I32 i;
b66f3475 3410 SSize_t len;
a0d0e21e
LW		 3411 I32 odd = 0;
3412 STDCHAR tbuf[512];
eb578fdb
KW		 3413 STDCHAR *s;
3414 IO *io;
3415 SV *sv = NULL;
5f05dabc 3416 GV *gv;
146174a9 3417 PerlIO *fp;
8cd29efc 3418 const U8 * first_variant;
a0d0e21e 3419
6f1401dc 3420 tryAMAGICftest_MG(PL_op->op_type == OP_FTTEXT ? 'T' : 'B');
07fe7c6a 3421
533c011a 3422 if (PL_op->op_flags & OPf_REF)
146174a9 3423 gv = cGVOP_gv;
d2c4d2d1 3424 else if ((PL_op->op_private & (OPpFT_STACKED|OPpFT_AFTER_t))
8db8f6b6 3425 == OPpFT_STACKED)
ba8182f8 3426 gv = PL_defgv;
d2c4d2d1 3427 else {
d2f67720 3428 sv = *PL_stack_sp;
d2c4d2d1 3429 gv = MAYBE_DEREF_GV_nomg(sv);
8db8f6b6 3430 }
5f05dabc 3431
3432 if (gv) {
3280af22
NIS		 3433 if (gv == PL_defgv) {
3434 if (PL_statgv)
bd5f6c01
FC		 3435 io = SvTYPE(PL_statgv) == SVt_PVIO
3436 ? (IO *)PL_statgv
3437 : GvIO(PL_statgv);
a0d0e21e 3438 else {
a0d0e21e
LW		 3439 goto really_filename;
3440 }
3441 }
3442 else {
3280af22 3443 PL_statgv = gv;
60e13354 3444 SvPVCLEAR(PL_statname);
3280af22 3445 io = GvIO(PL_statgv);
a0d0e21e 3446 }
eb4c377a 3447 PL_laststatval = -1;
21a64c3e 3448 PL_laststype = OP_STAT;
a0d0e21e 3449 if (io && IoIFP(io)) {
375ed12a 3450 int fd;
5f05dabc 3451 if (! PerlIO_has_base(IoIFP(io)))
cea2e8a9 3452 DIE(aTHX_ "-T and -B not implemented on filehandles");
375ed12a
JH		 3453 fd = PerlIO_fileno(IoIFP(io));
3454 if (fd < 0) {
3455 SETERRNO(EBADF,RMS_IFI);
3456 FT_RETURNUNDEF;
3457 }
3458 PL_laststatval = PerlLIO_fstat(fd, &PL_statcache);
3280af22 3459 if (PL_laststatval < 0)
8db8f6b6 3460 FT_RETURNUNDEF;
9cbac4c7 3461 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
533c011a 3462 if (PL_op->op_type == OP_FTTEXT)
8db8f6b6 3463 FT_RETURNNO;
a0d0e21e 3464 else
8db8f6b6 3465 FT_RETURNYES;
9cbac4c7 3466 }
a20bf0c3 3467 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
760ac839 3468 i = PerlIO_getc(IoIFP(io));
a0d0e21e 3469 if (i != EOF)
760ac839 3470 (void)PerlIO_ungetc(IoIFP(io),i);
bd47baf2
NT		 3471 else
3472 /* null file is anything */
3473 FT_RETURNYES;
a0d0e21e 3474 }
a20bf0c3
JH		 3475 len = PerlIO_get_bufsiz(IoIFP(io));
3476 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
760ac839
LW		 3477 /* sfio can have large buffers - limit to 512 */
3478 if (len > 512)
3479 len = 512;
a0d0e21e
LW		 3480 }
3481 else {
2ad48547 3482 SETERRNO(EBADF,RMS_IFI);
3f12cff4 3483 report_evil_fh(gv);
93189314 3484 SETERRNO(EBADF,RMS_IFI);
8db8f6b6 3485 FT_RETURNUNDEF;
a0d0e21e
LW		 3486 }
3487 }
3488 else {
7cb3f959 3489 const char *file;
a155eb05
TC		 3490 const char *temp;
3491 STRLEN temp_len;
375ed12a 3492 int fd;
7cb3f959 3493
9959d439 3494 assert(sv);
a155eb05
TC		 3495 temp = SvPV_nomg_const(sv, temp_len);
3496 sv_setpv(PL_statname, temp);
3497 if (!IS_SAFE_PATHNAME(temp, temp_len, OP_NAME(PL_op))) {
3498 PL_laststatval = -1;
3499 PL_laststype = OP_STAT;
3500 FT_RETURNUNDEF;
3501 }
5f05dabc 3502 really_filename:
7cb3f959 3503 file = SvPVX_const(PL_statname);
a0714e2c 3504 PL_statgv = NULL;
7cb3f959 3505 if (!(fp = PerlIO_open(file, "r"))) {
ad2d99e3
FC		 3506 if (!gv) {
3507 PL_laststatval = -1;
3508 PL_laststype = OP_STAT;
3509 }
7cb3f959 3510 if (ckWARN(WARN_NEWLINE) && should_warn_nl(file)) {
5d37acd6 3511 /* PL_warn_nl is constant */
7347ee54 3512 GCC_DIAG_IGNORE_STMT(-Wformat-nonliteral);
9014280d 3513 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
7347ee54 3514 GCC_DIAG_RESTORE_STMT;
5d37acd6 3515 }
8db8f6b6 3516 FT_RETURNUNDEF;
a0d0e21e 3517 }
ad2d99e3 3518 PL_laststype = OP_STAT;
375ed12a
JH		 3519 fd = PerlIO_fileno(fp);
3520 if (fd < 0) {
3521 (void)PerlIO_close(fp);
3522 SETERRNO(EBADF,RMS_IFI);
3523 FT_RETURNUNDEF;
3524 }
3525 PL_laststatval = PerlLIO_fstat(fd, &PL_statcache);
146174a9 3526 if (PL_laststatval < 0) {
3f6b66c1 3527 dSAVE_ERRNO;
146174a9 3528 (void)PerlIO_close(fp);
3f6b66c1 3529 RESTORE_ERRNO;
8db8f6b6 3530 FT_RETURNUNDEF;
146174a9 3531 }
bd61b366 3532 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, NULL);
146174a9
CB		 3533 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3534 (void)PerlIO_close(fp);
a0d0e21e 3535 if (len <= 0) {
533c011a 3536 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
8db8f6b6
FC		 3537 FT_RETURNNO; /* special case NFS directories */
3538 FT_RETURNYES; /* null file is anything */
a0d0e21e
LW		 3539 }
3540 s = tbuf;
3541 }
3542
3543 /* now scan s to look for textiness */
3544
146174a9
CB		 3545#if defined(DOSISH) || defined(USEMYBINMODE)
3546 /* ignore trailing ^Z on short files */
58c0efa5 3547 if (len && len < (I32)sizeof(tbuf) && tbuf[len-1] == 26)
146174a9
CB		 3548 --len;
3549#endif
3550
f13c8ddb 3551 assert(len);
8cd29efc 3552 if (! is_utf8_invariant_string_loc((U8 *) s, len, &first_variant)) {
f13c8ddb 3553
9f10db87 3554 /* Here contains a variant under UTF-8 . See if the entire string is
8bc127bf 3555 * UTF-8. */
8cd29efc 3556 if (is_utf8_fixed_width_buf_flags(first_variant,
6658c416 3557 len - ((char *) first_variant - (char *) s),
8cd29efc
KW		 3558 0))
3559 {
f13c8ddb
KW		 3560 if (PL_op->op_type == OP_FTTEXT) {
3561 FT_RETURNYES;
3562 }
3563 else {
3564 FT_RETURNNO;
3565 }
3566 }
3567 }
3568
3569 /* Here, is not UTF-8 or is entirely ASCII. Look through the buffer for
3570 * things that wouldn't be in ASCII text or rich ASCII text. Count these
3571 * in 'odd' */
a0d0e21e
LW		 3572 for (i = 0; i < len; i++, s++) {
3573 if (!*s) { /* null never allowed in text */
3574 odd += len;
3575 break;
3576 }
130c5df3 3577#ifdef USE_LOCALE_CTYPE
f13c8ddb
KW		 3578 if (IN_LC_RUNTIME(LC_CTYPE)) {
3579 if ( isPRINT_LC(*s) || isSPACE_LC(*s)) {
b3f66c68 3580 continue;
f13c8ddb
KW		 3581 }
3582 }
3583 else
3584#endif
af4226f2
KW		 3585 if ( isPRINT_A(*s)
3586 /* VT occurs so rarely in text, that we consider it odd */
3587 || (isSPACE_A(*s) && *s != VT_NATIVE)
f13c8ddb
KW		 3588
3589 /* But there is a fair amount of backspaces and escapes in
3590 * some text */
af4226f2
KW		 3591 || *s == '\b'
3592 || *s == ESC_NATIVE)
f13c8ddb
KW		 3593 {
3594 continue;
3595 }
3596 odd++;
a0d0e21e
LW		 3597 }
3598
533c011a 3599 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
8db8f6b6 3600 FT_RETURNNO;
a0d0e21e 3601 else
8db8f6b6 3602 FT_RETURNYES;
a0d0e21e
LW		 3603}
3604
a0d0e21e
LW		 3605/* File calls. */
3606
3607PP(pp_chdir)
3608{
20b7effb 3609 dSP; dTARGET;
c445ea15 3610 const char *tmps = NULL;
9a957fbc 3611 GV *gv = NULL;
a0d0e21e 3612
c4aca7d0 3613 if( MAXARG == 1 ) {
9a957fbc 3614 SV * const sv = POPs;
d4ac975e
GA		 3615 if (PL_op->op_flags & OPf_SPECIAL) {
3616 gv = gv_fetchsv(sv, 0, SVt_PVIO);
60121127
TC		 3617 if (!gv) {
3618 if (ckWARN(WARN_UNOPENED)) {
3619 Perl_warner(aTHX_ packWARN(WARN_UNOPENED),
3620 "chdir() on unopened filehandle %" SVf, sv);
3621 }
3622 SETERRNO(EBADF,RMS_IFI);
725c44f9 3623 PUSHs(&PL_sv_zero);
60121127
TC		 3624 TAINT_PROPER("chdir");
3625 RETURN;
3626 }
d4ac975e 3627 }
2ea1cce7 3628 else if (!(gv = MAYBE_DEREF_GV(sv)))
a0c4bfab 3629 tmps = SvPV_nomg_const_nolen(sv);
c4aca7d0 3630 }
b4929cb4 3631 else {
9a957fbc
AL		 3632 HV * const table = GvHVn(PL_envgv);
3633 SV **svp;
3634
92c843fb 3635 EXTEND(SP, 1);
a4fc7abc
AL		 3636 if ( (svp = hv_fetchs(table, "HOME", FALSE))
3637 || (svp = hv_fetchs(table, "LOGDIR", FALSE))
491527d0 3638#ifdef VMS
a4fc7abc 3639 || (svp = hv_fetchs(table, "SYS$LOGIN", FALSE))
491527d0 3640#endif
35ae6b54
MS		 3641 )
3642 {
8c074e2a 3643 tmps = SvPV_nolen_const(*svp);
35ae6b54 3644 }
72f496dc 3645 else {
725c44f9 3646 PUSHs(&PL_sv_zero);
201e9e2a 3647 SETERRNO(EINVAL, LIB_INVARG);
b7ab37f8 3648 TAINT_PROPER("chdir");
389ec635
MS		 3649 RETURN;
3650 }
8ea155d1 3651 }
8ea155d1 3652
a0d0e21e 3653 TAINT_PROPER("chdir");
c4aca7d0
GA		 3654 if (gv) {
3655#ifdef HAS_FCHDIR
9a957fbc 3656 IO* const io = GvIO(gv);
c4aca7d0 3657 if (io) {
c08d6937 3658 if (IoDIRP(io)) {
3497a01f 3659 PUSHi(fchdir(my_dirfd(IoDIRP(io))) >= 0);
c08d6937 3660 } else if (IoIFP(io)) {
375ed12a
JH		 3661 int fd = PerlIO_fileno(IoIFP(io));
3662 if (fd < 0) {
3663 goto nuts;
3664 }
3665 PUSHi(fchdir(fd) >= 0);
c4aca7d0
GA		 3666 }
3667 else {
375ed12a 3668 goto nuts;
c4aca7d0 3669 }
375ed12a
JH		 3670 } else {
3671 goto nuts;
c4aca7d0 3672 }
375ed12a 3673
c4aca7d0
GA		 3674#else
3675 DIE(aTHX_ PL_no_func, "fchdir");
3676#endif
3677 }
3678 else
b8ffc8df 3679 PUSHi( PerlDir_chdir(tmps) >= 0 );
748a9306
LW		 3680#ifdef VMS
3681 /* Clear the DEFAULT element of ENV so we'll get the new value
3682 * in the future. */
6b88bc9c 3683 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
748a9306 3684#endif
a0d0e21e 3685 RETURN;
375ed12a 3686
0a9cc54c 3687#ifdef HAS_FCHDIR
375ed12a
JH		 3688 nuts:
3689 report_evil_fh(gv);
3690 SETERRNO(EBADF,RMS_IFI);
725c44f9 3691 PUSHs(&PL_sv_zero);
375ed12a 3692 RETURN;
0a9cc54c 3693#endif
a0d0e21e
LW		 3694}
3695
b1c05ba5
DM		 3696
3697/* also used for: pp_chmod() pp_kill() pp_unlink() pp_utime() */
3698
a0d0e21e
LW		 3699PP(pp_chown)
3700{
20b7effb 3701 dSP; dMARK; dTARGET;
605b9385 3702 const I32 value = (I32)apply(PL_op->op_type, MARK, SP);
76ffd3b9 3703
a0d0e21e 3704 SP = MARK;
b59aed67 3705 XPUSHi(value);
a0d0e21e 3706 RETURN;
a0d0e21e
LW		 3707}
3708
3709PP(pp_chroot)
3710{
a0d0e21e 3711#ifdef HAS_CHROOT
20b7effb 3712 dSP; dTARGET;
7452cf6a 3713 char * const tmps = POPpx;
a0d0e21e
LW		 3714 TAINT_PROPER("chroot");
3715 PUSHi( chroot(tmps) >= 0 );
3716 RETURN;
3717#else
cea2e8a9 3718 DIE(aTHX_ PL_no_func, "chroot");
a0d0e21e
LW		 3719#endif
3720}
3721
a0d0e21e
LW		 3722PP(pp_rename)
3723{
20b7effb 3724 dSP; dTARGET;
a0d0e21e 3725 int anum;
45a23732
DD		 3726#ifndef HAS_RENAME
3727 Stat_t statbuf;
3728#endif
7452cf6a
AL		 3729 const char * const tmps2 = POPpconstx;
3730 const char * const tmps = SvPV_nolen_const(TOPs);
a0d0e21e
LW		 3731 TAINT_PROPER("rename");
3732#ifdef HAS_RENAME
baed7233 3733 anum = PerlLIO_rename(tmps, tmps2);
a0d0e21e 3734#else
45a23732 3735 if (!(anum = PerlLIO_stat(tmps, &statbuf))) {
ed969818
W		 3736 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3737 anum = 1;
3738 else {
45a23732 3739 if (PerlProc_geteuid() || PerlLIO_stat(tmps2, &statbuf) < 0 || !S_ISDIR(statbuf.st_mode))
ed969818
W		 3740 (void)UNLINK(tmps2);
3741 if (!(anum = link(tmps, tmps2)))
3742 anum = UNLINK(tmps);
3743 }
a0d0e21e
LW		 3744 }
3745#endif
3746 SETi( anum >= 0 );
3747 RETURN;
3748}
3749
b1c05ba5
DM		 3750
3751/* also used for: pp_symlink() */
3752
ce6987d0 3753#if defined(HAS_LINK) || defined(HAS_SYMLINK)
a0d0e21e
LW		 3754PP(pp_link)
3755{
20b7effb 3756 dSP; dTARGET;
ce6987d0
NC		 3757 const int op_type = PL_op->op_type;
3758 int result;
a0d0e21e 3759
ce6987d0
NC		 3760# ifndef HAS_LINK
3761 if (op_type == OP_LINK)
3762 DIE(aTHX_ PL_no_func, "link");
3763# endif
3764# ifndef HAS_SYMLINK
3765 if (op_type == OP_SYMLINK)
3766 DIE(aTHX_ PL_no_func, "symlink");
3767# endif
3768
3769 {
7452cf6a
AL		 3770 const char * const tmps2 = POPpconstx;
3771 const char * const tmps = SvPV_nolen_const(TOPs);
ce6987d0
NC		 3772 TAINT_PROPER(PL_op_desc[op_type]);
3773 result =
8d698507 3774# if defined(HAS_LINK) && defined(HAS_SYMLINK)
ce6987d0
NC		 3775 /* Both present - need to choose which. */
3776 (op_type == OP_LINK) ?
680b2c5e 3777 PerlLIO_link(tmps, tmps2) : PerlLIO_symlink(tmps, tmps2);
8d698507 3778# elif defined(HAS_LINK)
4a8ebb7f
SH		 3779 /* Only have link, so calls to pp_symlink will have DIE()d above. */
3780 PerlLIO_link(tmps, tmps2);
8d698507 3781# elif defined(HAS_SYMLINK)
4a8ebb7f 3782 /* Only have symlink, so calls to pp_link will have DIE()d above. */
680b2c5e 3783 PerlLIO_symlink(tmps, tmps2);
ce6987d0
NC		 3784# endif
3785 }
3786
3787 SETi( result >= 0 );
a0d0e21e 3788 RETURN;
ce6987d0 3789}
a0d0e21e 3790#else
b1c05ba5
DM		 3791
3792/* also used for: pp_symlink() */
3793
ce6987d0
NC		 3794PP(pp_link)
3795{
3796 /* Have neither. */
3797 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
a0d0e21e 3798}
ce6987d0 3799#endif
a0d0e21e
LW		 3800
3801PP(pp_readlink)
3802{
76ffd3b9 3803 dSP;
a0d0e21e 3804#ifdef HAS_SYMLINK
76ffd3b9 3805 dTARGET;
10516c54 3806 const char *tmps;
46fc3d4c 3807 char buf[MAXPATHLEN];
51b468f6 3808 SSize_t len;
46fc3d4c 3809
fb73857a 3810 TAINT;
10516c54 3811 tmps = POPpconstx;
51b468f6
JH		 3812 /* NOTE: if the length returned by readlink() is sizeof(buf) - 1,
3813 * it is impossible to know whether the result was truncated. */
680b2c5e 3814 len = PerlLIO_readlink(tmps, buf, sizeof(buf) - 1);
a0d0e21e
LW		 3815 if (len < 0)
3816 RETPUSHUNDEF;
3a56a99d 3817 buf[len] = '\0';
a0d0e21e
LW		 3818 PUSHp(buf, len);
3819 RETURN;
3820#else
3821 EXTEND(SP, 1);
3822 RETSETUNDEF; /* just pretend it's a normal file */
3823#endif
3824}
3825
3826#if !defined(HAS_MKDIR) || !defined(HAS_RMDIR)
ba106d47 3827STATIC int
b464bac0 3828S_dooneliner(pTHX_ const char *cmd, const char *filename)
a0d0e21e 3829{
b464bac0 3830 char * const save_filename = filename;
1e422769 3831 char *cmdline;
3832 char *s;
760ac839 3833 PerlIO *myfp;
1e422769 3834 int anum = 1;
6fca0082 3835 Size_t size = strlen(cmd) + (strlen(filename) * 2) + 10;
a0d0e21e 3836
7918f24d
NC		 3837 PERL_ARGS_ASSERT_DOONELINER;
3838
6fca0082
SP		 3839 Newx(cmdline, size, char);
3840 my_strlcpy(cmdline, cmd, size);
3841 my_strlcat(cmdline, " ", size);
1e422769 3842 for (s = cmdline + strlen(cmdline); *filename; ) {
a0d0e21e
LW		 3843 *s++ = '\\';
3844 *s++ = *filename++;
3845 }
d1307786
JH		 3846 if (s - cmdline < size)
3847 my_strlcpy(s, " 2>&1", size - (s - cmdline));
6ad3d225 3848 myfp = PerlProc_popen(cmdline, "r");
1e422769 3849 Safefree(cmdline);
3850
a0d0e21e 3851 if (myfp) {
0bcc34c2 3852 SV * const tmpsv = sv_newmortal();
6b88bc9c 3853 /* Need to save/restore 'PL_rs' ?? */
760ac839 3854 s = sv_gets(tmpsv, myfp, 0);
6ad3d225 3855 (void)PerlProc_pclose(myfp);
bd61b366 3856 if (s != NULL) {
1e422769 3857 int e;
3858 for (e = 1;
a0d0e21e 3859#ifdef HAS_SYS_ERRLIST
1e422769 3860 e <= sys_nerr
3861#endif
3862 ; e++)
3863 {
3864 /* you don't see this */
9b86a269 3865 const char * const errmsg = Strerror(e) ;
1e422769 3866 if (!errmsg)
3867 break;
3868 if (instr(s, errmsg)) {
3869 SETERRNO(e,0);
3870 return 0;
3871 }
a0d0e21e 3872 }
748a9306 3873 SETERRNO(0,0);
a0d0e21e
LW		 3874#ifndef EACCES
3875#define EACCES EPERM
3876#endif
1e422769 3877 if (instr(s, "cannot make"))
93189314 3878 SETERRNO(EEXIST,RMS_FEX);
1e422769 3879 else if (instr(s, "existing file"))
93189314 3880 SETERRNO(EEXIST,RMS_FEX);
1e422769 3881 else if (instr(s, "ile exists"))
93189314 3882 SETERRNO(EEXIST,RMS_FEX);
1e422769 3883 else if (instr(s, "non-exist"))
93189314 3884 SETERRNO(ENOENT,RMS_FNF);
1e422769 3885 else if (instr(s, "does not exist"))
93189314 3886 SETERRNO(ENOENT,RMS_FNF);
1e422769 3887 else if (instr(s, "not empty"))
93189314 3888 SETERRNO(EBUSY,SS_DEVOFFLINE);
1e422769 3889 else if (instr(s, "cannot access"))
93189314 3890 SETERRNO(EACCES,RMS_PRV);
a0d0e21e 3891 else
93189314 3892 SETERRNO(EPERM,RMS_PRV);
a0d0e21e
LW		 3893 return 0;
3894 }
3895 else { /* some mkdirs return no failure indication */
45a23732
DD		 3896 Stat_t statbuf;
3897 anum = (PerlLIO_stat(save_filename, &statbuf) >= 0);
911d147d 3898 if (PL_op->op_type == OP_RMDIR)
a0d0e21e
LW		 3899 anum = !anum;
3900 if (anum)
748a9306 3901 SETERRNO(0,0);
a0d0e21e 3902 else
93189314 3903 SETERRNO(EACCES,RMS_PRV); /* a guess */
a0d0e21e
LW		 3904 }
3905 return anum;
3906 }
3907 else
3908 return 0;
3909}
3910#endif
3911
0c54f65b
RGS		 3912/* This macro removes trailing slashes from a directory name.
3913 * Different operating and file systems take differently to
3914 * trailing slashes. According to POSIX 1003.1 1996 Edition
3915 * any number of trailing slashes should be allowed.
3916 * Thusly we snip them away so that even non-conforming
3917 * systems are happy.
3918 * We should probably do this "filtering" for all
3919 * the functions that expect (potentially) directory names:
3920 * -d, chdir(), chmod(), chown(), chroot(), fcntl()?,
3921 * (mkdir()), opendir(), rename(), rmdir(), stat(). --jhi */
3922
5c144d81 3923#define TRIMSLASHES(tmps,len,copy) (tmps) = SvPV_const(TOPs, (len)); \
0c54f65b
RGS		 3924 if ((len) > 1 && (tmps)[(len)-1] == '/') { \
3925 do { \
3926 (len)--; \
3927 } while ((len) > 1 && (tmps)[(len)-1] == '/'); \
3928 (tmps) = savepvn((tmps), (len)); \
3929 (copy) = TRUE; \
3930 }
3931
a0d0e21e
LW		 3932PP(pp_mkdir)
3933{
20b7effb 3934 dSP; dTARGET;
df25ddba 3935 STRLEN len;
5c144d81 3936 const char *tmps;
df25ddba 3937 bool copy = FALSE;
2ef2454e 3938 const unsigned int mode = (MAXARG > 1 && (TOPs||((void)POPs,0))) ? POPu : 0777;
5a211162 3939
0c54f65b 3940 TRIMSLASHES(tmps,len,copy);
a0d0e21e
LW		 3941
3942 TAINT_PROPER("mkdir");
3943#ifdef HAS_MKDIR
b8ffc8df 3944 SETi( PerlDir_mkdir(tmps, mode) >= 0 );
a0d0e21e 3945#else
0bcc34c2
AL		 3946 {
3947 int oldumask;
a0d0e21e 3948 SETi( dooneliner("mkdir", tmps) );
6ad3d225
GS		 3949 oldumask = PerlLIO_umask(0);
3950 PerlLIO_umask(oldumask);
3951 PerlLIO_chmod(tmps, (mode & ~oldumask) & 0777);
0bcc34c2 3952 }
a0d0e21e 3953#endif
df25ddba
JH		 3954 if (copy)
3955 Safefree(tmps);
a0d0e21e
LW		 3956 RETURN;
3957}
3958
3959PP(pp_rmdir)
3960{
20b7effb 3961 dSP; dTARGET;
0c54f65b 3962 STRLEN len;
5c144d81 3963 const char *tmps;
0c54f65b 3964 bool copy = FALSE;
a0d0e21e 3965
0c54f65b 3966 TRIMSLASHES(tmps,len,copy);
a0d0e21e
LW		 3967 TAINT_PROPER("rmdir");
3968#ifdef HAS_RMDIR
b8ffc8df 3969 SETi( PerlDir_rmdir(tmps) >= 0 );
a0d0e21e 3970#else
0c54f65b 3971 SETi( dooneliner("rmdir", tmps) );
a0d0e21e 3972#endif
0c54f65b
RGS		 3973 if (copy)
3974 Safefree(tmps);
a0d0e21e
LW		 3975 RETURN;
3976}
3977
3978/* Directory calls. */
3979
3980PP(pp_open_dir)
3981{
a0d0e21e 3982#if defined(Direntry_t) && defined(HAS_READDIR)
20b7effb 3983 dSP;
7452cf6a 3984 const char * const dirname = POPpconstx;
159b6efe 3985 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 3986 IO * const io = GvIOn(gv);
a0d0e21e 3987
a2a5de95 3988 if ((IoIFP(io) || IoOFP(io)))
489c16bf
DIM		 3989 Perl_croak(aTHX_ "Cannot open %" HEKf " as a dirhandle: it is already open as a filehandle",
3990 HEKfARG(GvENAME_HEK(gv)));
a0d0e21e 3991 if (IoDIRP(io))
6ad3d225 3992 PerlDir_close(IoDIRP(io));
b8ffc8df 3993 if (!(IoDIRP(io) = PerlDir_open(dirname)))
a0d0e21e
LW		 3994 goto nope;
3995
3996 RETPUSHYES;
7b52d656 3997 nope:
a0d0e21e 3998 if (!errno)
93189314 3999 SETERRNO(EBADF,RMS_DIR);
a0d0e21e
LW		 4000 RETPUSHUNDEF;
4001#else
cea2e8a9 4002 DIE(aTHX_ PL_no_dir_func, "opendir");
a0d0e21e
LW		 4003#endif
4004}
4005
4006PP(pp_readdir)
4007{
34b7f128
AMS		 4008#if !defined(Direntry_t) || !defined(HAS_READDIR)
4009 DIE(aTHX_ PL_no_dir_func, "readdir");
4010#else
fd8cd3a3 4011#if !defined(I_DIRENT) && !defined(VMS)
20ce7b12 4012 Direntry_t *readdir (DIR *);
a0d0e21e 4013#endif
34b7f128
AMS		 4014 dSP;
4015
4016 SV *sv;
1c23e2bd 4017 const U8 gimme = GIMME_V;
159b6efe 4018 GV * const gv = MUTABLE_GV(POPs);
eb578fdb
KW		 4019 const Direntry_t *dp;
4020 IO * const io = GvIOn(gv);
a0d0e21e 4021
8a6c0fcb 4022 if (!IoDIRP(io)) {
a2a5de95 4023 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
147e3846 4024 "readdir() attempted on invalid dirhandle %" HEKf,
d0c0e7dd 4025 HEKfARG(GvENAME_HEK(gv)));
3b7fbd4a
SP		 4026 goto nope;
4027 }
a0d0e21e 4028
34b7f128
AMS		 4029 do {
4030 dp = (Direntry_t *)PerlDir_read(IoDIRP(io));
4031 if (!dp)
4032 break;
a0d0e21e 4033#ifdef DIRNAMLEN
34b7f128 4034 sv = newSVpvn(dp->d_name, dp->d_namlen);
a0d0e21e 4035#else
34b7f128 4036 sv = newSVpv(dp->d_name, 0);
fb73857a 4037#endif
34b7f128
AMS		 4038 if (!(IoFLAGS(io) & IOf_UNTAINT))
4039 SvTAINTED_on(sv);
6e449a3a 4040 mXPUSHs(sv);
a79db61d 4041 } while (gimme == G_ARRAY);
34b7f128
AMS		 4042
4043 if (!dp && gimme != G_ARRAY)
ee71f1d1 4044 RETPUSHUNDEF;
34b7f128 4045
a0d0e21e
LW		 4046 RETURN;
4047
7b52d656 4048 nope:
a0d0e21e 4049 if (!errno)
93189314 4050 SETERRNO(EBADF,RMS_ISI);
da39159d 4051 if (gimme == G_ARRAY)
a0d0e21e
LW		 4052 RETURN;
4053 else
4054 RETPUSHUNDEF;
a0d0e21e
LW		 4055#endif
4056}
4057
4058PP(pp_telldir)
4059{
a0d0e21e 4060#if defined(HAS_TELLDIR) || defined(telldir)
20b7effb 4061 dSP; dTARGET;
968dcd91
JH		 4062 /* XXX does _anyone_ need this? --AD 2/20/1998 */
4063 /* XXX netbsd still seemed to.
4064 XXX HAS_TELLDIR_PROTO is new style, NEED_TELLDIR_PROTO is old style.
4065 --JHI 1999-Feb-02 */
4066# if !defined(HAS_TELLDIR_PROTO) || defined(NEED_TELLDIR_PROTO)
20ce7b12 4067 long telldir (DIR *);
dfe9444c 4068# endif
159b6efe 4069 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 4070 IO * const io = GvIOn(gv);
a0d0e21e 4071
8a6c0fcb 4072 if (!IoDIRP(io)) {
a2a5de95 4073 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
147e3846 4074 "telldir() attempted on invalid dirhandle %" HEKf,
d0c0e7dd 4075 HEKfARG(GvENAME_HEK(gv)));
abc7ecad
SP		 4076 goto nope;
4077 }
a0d0e21e 4078
6ad3d225 4079 PUSHi( PerlDir_tell(IoDIRP(io)) );
a0d0e21e 4080 RETURN;
7b52d656 4081 nope:
a0d0e21e 4082 if (!errno)
93189314 4083 SETERRNO(EBADF,RMS_ISI);
a0d0e21e
LW		 4084 RETPUSHUNDEF;
4085#else
cea2e8a9 4086 DIE(aTHX_ PL_no_dir_func, "telldir");
a0d0e21e
LW		 4087#endif
4088}
4089
4090PP(pp_seekdir)
4091{
a0d0e21e 4092#if defined(HAS_SEEKDIR) || defined(seekdir)
20b7effb 4093 dSP;
7452cf6a 4094 const long along = POPl;
159b6efe 4095 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 4096 IO * const io = GvIOn(gv);
a0d0e21e 4097
8a6c0fcb 4098 if (!IoDIRP(io)) {
a2a5de95 4099 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
147e3846 4100 "seekdir() attempted on invalid dirhandle %" HEKf,
d0c0e7dd 4101 HEKfARG(GvENAME_HEK(gv)));
abc7ecad
SP		 4102 goto nope;
4103 }
6ad3d225 4104 (void)PerlDir_seek(IoDIRP(io), along);
a0d0e21e
LW		 4105
4106 RETPUSHYES;
7b52d656 4107 nope:
a0d0e21e 4108 if (!errno)
93189314 4109 SETERRNO(EBADF,RMS_ISI);
a0d0e21e
LW		 4110 RETPUSHUNDEF;
4111#else
cea2e8a9 4112 DIE(aTHX_ PL_no_dir_func, "seekdir");
a0d0e21e
LW		 4113#endif
4114}
4115
4116PP(pp_rewinddir)
4117{
a0d0e21e 4118#if defined(HAS_REWINDDIR) || defined(rewinddir)
20b7effb 4119 dSP;
159b6efe 4120 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 4121 IO * const io = GvIOn(gv);
a0d0e21e 4122
8a6c0fcb 4123 if (!IoDIRP(io)) {
a2a5de95 4124 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
147e3846 4125 "rewinddir() attempted on invalid dirhandle %" HEKf,
d0c0e7dd 4126 HEKfARG(GvENAME_HEK(gv)));
a0d0e21e 4127 goto nope;
abc7ecad 4128 }
6ad3d225 4129 (void)PerlDir_rewind(IoDIRP(io));
a0d0e21e 4130 RETPUSHYES;
7b52d656 4131 nope:
a0d0e21e 4132 if (!errno)
93189314 4133 SETERRNO(EBADF,RMS_ISI);
a0d0e21e
LW		 4134 RETPUSHUNDEF;
4135#else
cea2e8a9 4136 DIE(aTHX_ PL_no_dir_func, "rewinddir");
a0d0e21e
LW		 4137#endif
4138}
4139
4140PP(pp_closedir)
4141{
a0d0e21e 4142#if defined(Direntry_t) && defined(HAS_READDIR)
20b7effb 4143 dSP;
159b6efe 4144 GV * const gv = MUTABLE_GV(POPs);
eb578fdb 4145 IO * const io = GvIOn(gv);
a0d0e21e 4146
8a6c0fcb 4147 if (!IoDIRP(io)) {
a2a5de95 4148 Perl_ck_warner(aTHX_ packWARN(WARN_IO),
147e3846 4149 "closedir() attempted on invalid dirhandle %" HEKf,
d0c0e7dd 4150 HEKfARG(GvENAME_HEK(gv)));
abc7ecad
SP		 4151 goto nope;
4152 }
a0d0e21e 4153#ifdef VOID_CLOSEDIR
6ad3d225 4154 PerlDir_close(IoDIRP(io));
a0d0e21e 4155#else
6ad3d225 4156 if (PerlDir_close(IoDIRP(io)) < 0) {
748a9306 4157 IoDIRP(io) = 0; /* Don't try to close again--coredumps on SysV */
a0d0e21e 4158 goto nope;
748a9306 4159 }
a0d0e21e
LW		 4160#endif
4161 IoDIRP(io) = 0;
4162
4163 RETPUSHYES;
7b52d656 4164 nope:
a0d0e21e 4165 if (!errno)
93189314 4166 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW		 4167 RETPUSHUNDEF;
4168#else
cea2e8a9 4169 DIE(aTHX_ PL_no_dir_func, "closedir");
a0d0e21e
LW		 4170#endif
4171}
4172
4173/* Process control. */
4174
4175PP(pp_fork)
4176{
44a8e56a 4177#ifdef HAS_FORK
20b7effb 4178 dSP; dTARGET;
761237fe 4179 Pid_t childpid;
21e89b5f 4180#ifdef HAS_SIGPROCMASK
eb3d0a58
LT		 4181 sigset_t oldmask, newmask;
4182#endif
a0d0e21e
LW		 4183
4184 EXTEND(SP, 1);
45bc9206 4185 PERL_FLUSHALL_FOR_CHILD;
21e89b5f 4186#ifdef HAS_SIGPROCMASK
eb3d0a58
LT		 4187 sigfillset(&newmask);
4188 sigprocmask(SIG_SETMASK, &newmask, &oldmask);
4189#endif
52e18b1f 4190 childpid = PerlProc_fork();
eb3d0a58
LT		 4191 if (childpid == 0) {
4192 int sig;
4193 PL_sig_pending = 0;
4194 if (PL_psig_pend)
4195 for (sig = 1; sig < SIG_SIZE; sig++)
4196 PL_psig_pend[sig] = 0;
4197 }
21e89b5f 4198#ifdef HAS_SIGPROCMASK
eb3d0a58
LT		 4199 {
4200 dSAVE_ERRNO;
4201 sigprocmask(SIG_SETMASK, &oldmask, NULL);
4202 RESTORE_ERRNO;
4203 }
4204#endif
a0d0e21e 4205 if (childpid < 0)
af2fe5eb 4206 RETPUSHUNDEF;
a0d0e21e 4207 if (!childpid) {
ca0c25f6 4208#ifdef PERL_USES_PL_PIDSTATUS
3280af22 4209 hv_clear(PL_pidstatus); /* no kids, so don't wait for 'em */
ca0c25f6 4210#endif
a0d0e21e
LW		 4211 }
4212 PUSHi(childpid);
4213 RETURN;
8d698507 4214#elif (defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)) || defined(__amigaos4__)
39644a26 4215 dSP; dTARGET;
146174a9
CB		 4216 Pid_t childpid;
4217
4218 EXTEND(SP, 1);
4219 PERL_FLUSHALL_FOR_CHILD;
4220 childpid = PerlProc_fork();
60fa28ff 4221 if (childpid == -1)
af2fe5eb 4222 RETPUSHUNDEF;
146174a9
CB		 4223 PUSHi(childpid);
4224 RETURN;
8d698507 4225#else
0322a713 4226 DIE(aTHX_ PL_no_func, "fork");
a0d0e21e
LW		 4227#endif
4228}
4229
4230PP(pp_wait)
4231{
e37778c2 4232#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(__LIBCATAMOUNT__)
20b7effb 4233 dSP; dTARGET;
761237fe 4234 Pid_t childpid;
a0d0e21e 4235 int argflags;
a0d0e21e 4236
4ffa73a3
JH		 4237 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
4238 childpid = wait4pid(-1, &argflags, 0);
4239 else {
4240 while ((childpid = wait4pid(-1, &argflags, 0)) == -1 &&
4241 errno == EINTR) {
4242 PERL_ASYNC_CHECK();
4243 }
0a0ada86 4244 }
68a29c53
GS		 4245# if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4246 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
2fbb330f 4247 STATUS_NATIVE_CHILD_SET((childpid && childpid != -1) ? argflags : -1);
68a29c53 4248# else
2fbb330f 4249 STATUS_NATIVE_CHILD_SET((childpid > 0) ? argflags : -1);
68a29c53 4250# endif
44a8e56a 4251 XPUSHi(childpid);
a0d0e21e
LW		 4252 RETURN;
4253#else
0322a713 4254 DIE(aTHX_ PL_no_func, "wait");
a0d0e21e
LW		 4255#endif
4256}
4257
4258PP(pp_waitpid)
4259{
e37778c2 4260#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(__LIBCATAMOUNT__)
20b7effb 4261 dSP; dTARGET;
0bcc34c2
AL		 4262 const int optype = POPi;
4263 const Pid_t pid = TOPi;
2ec0bfb3 4264 Pid_t result;
40262ff4
AB		 4265#ifdef __amigaos4__
4266 int argflags = 0;
4267 result = amigaos_waitpid(aTHX_ optype, pid, &argflags);
4268 STATUS_NATIVE_CHILD_SET((result >= 0) ? argflags : -1);
4269 result = result == 0 ? pid : -1;
4270#else
a0d0e21e 4271 int argflags;
a0d0e21e 4272
4ffa73a3 4273 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
2ec0bfb3 4274 result = wait4pid(pid, &argflags, optype);
4ffa73a3 4275 else {
2ec0bfb3 4276 while ((result = wait4pid(pid, &argflags, optype)) == -1 &&
4ffa73a3
JH		 4277 errno == EINTR) {
4278 PERL_ASYNC_CHECK();
4279 }
0a0ada86 4280 }
68a29c53
GS		 4281# if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4282 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
2fbb330f 4283 STATUS_NATIVE_CHILD_SET((result && result != -1) ? argflags : -1);
68a29c53 4284# else
2fbb330f 4285 STATUS_NATIVE_CHILD_SET((result > 0) ? argflags : -1);
68a29c53 4286# endif
40262ff4 4287# endif /* __amigaos4__ */
2ec0bfb3 4288 SETi(result);
a0d0e21e
LW		 4289 RETURN;
4290#else
0322a713 4291 DIE(aTHX_ PL_no_func, "waitpid");
a0d0e21e
LW		 4292#endif
4293}
4294
4295PP(pp_system)
4296{
20b7effb 4297 dSP; dMARK; dORIGMARK; dTARGET;
9c12f1e5
RGS		 4298#if defined(__LIBCATAMOUNT__)
4299 PL_statusvalue = -1;
4300 SP = ORIGMARK;
4301 XPUSHi(-1);
4302#else
a0d0e21e 4303 I32 value;
40262ff4
AB		 4304# ifdef __amigaos4__
4305 void * result;
4306# else
76ffd3b9 4307 int result;
40262ff4 4308# endif
a0d0e21e 4309
64def2ae 4310 while (++MARK <= SP) {
8fe3452c 4311 SV *origsv = *MARK, *copysv;
64def2ae
Z		 4312 STRLEN len;
4313 char *pv;
8fe3452c 4314 SvGETMAGIC(origsv);
8e7c2faa 4315#if defined(WIN32) || defined(__VMS)
8fe3452c
Z		 4316 /*
4317 * Because of a nasty platform-specific variation on the meaning
4318 * of arguments to this op, we must preserve numeric arguments
4319 * as numeric, not just retain the string value.
4320 */
4321 if (SvNIOK(origsv) || SvNIOKp(origsv)) {
4322 copysv = newSV_type(SVt_PVNV);
4323 sv_2mortal(copysv);
4324 if (SvPOK(origsv) || SvPOKp(origsv)) {
4325 pv = SvPV_nomg(origsv, len);
4326 sv_setpvn(copysv, pv, len);
4327 SvPOK_off(copysv);
4328 }
4329 if (SvIOK(origsv) || SvIOKp(origsv))
4330 SvIV_set(copysv, SvIVX(origsv));
4331 if (SvNOK(origsv) || SvNOKp(origsv))
4332 SvNV_set(copysv, SvNVX(origsv));
4333 SvFLAGS(copysv) |= SvFLAGS(origsv) &
4334 (SVf_IOK|SVf_NOK|SVf_POK|SVp_IOK|SVp_NOK|SVp_POK|
4335 SVf_UTF8|SVf_IVisUV);
4336 } else
4337#endif
4338 {
4339 pv = SvPV_nomg(origsv, len);
4340 copysv = newSVpvn_flags(pv, len,
4341 (SvFLAGS(origsv) & SVf_UTF8) | SVs_TEMP);
4342 }
4343 *MARK = copysv;
64def2ae
Z		 4344 }
4345 MARK = ORIGMARK;
4346
284167a5 4347 if (TAINTING_get) {
bbd7eb8a 4348 TAINT_ENV();
5a445156 4349 TAINT_PROPER("system");
a0d0e21e 4350 }
45bc9206 4351 PERL_FLUSHALL_FOR_CHILD;
40262ff4 4352#if (defined(HAS_FORK) || defined(__amigaos4__)) && !defined(VMS) && !defined(OS2) || defined(PERL_MICRO)
d7e492a4 4353 {
ea34f6bd 4354#ifdef __amigaos4__
40262ff4
AB		 4355 struct UserData userdata;
4356 pthread_t proc;
4357#else
eb160463 4358 Pid_t childpid;
40262ff4 4359#endif
eb160463 4360 int pp[2];
27da23d5 4361 I32 did_pipes = 0;
40262ff4 4362 bool child_success = FALSE;
21e89b5f 4363#ifdef HAS_SIGPROCMASK
b1cf9e92
LT		 4364 sigset_t newset, oldset;
4365#endif
eb160463 4366
74df577f 4367 if (PerlProc_pipe_cloexec(pp) >= 0)
eb160463 4368 did_pipes = 1;
ea34f6bd 4369#ifdef __amigaos4__
40262ff4
AB		 4370 amigaos_fork_set_userdata(aTHX_
4371 &userdata,
4372 did_pipes,
4373 pp[1],
4374 SP,
4375 mark);
4376 pthread_create(&proc,NULL,amigaos_system_child,(void *)&userdata);
4377 child_success = proc > 0;
4378#else
21e89b5f 4379#ifdef HAS_SIGPROCMASK
b1cf9e92
LT		 4380 sigemptyset(&newset);
4381 sigaddset(&newset, SIGCHLD);
4382 sigprocmask(SIG_BLOCK, &newset, &oldset);
4383#endif
eb160463
GS		 4384 while ((childpid = PerlProc_fork()) == -1) {
4385 if (errno != EAGAIN) {
4386 value = -1;
4387 SP = ORIGMARK;
b59aed67 4388 XPUSHi(value);
eb160463
GS		 4389 if (did_pipes) {
4390 PerlLIO_close(pp[0]);
4391 PerlLIO_close(pp[1]);
4392 }
21e89b5f 4393#ifdef HAS_SIGPROCMASK
b1cf9e92
LT		 4394 sigprocmask(SIG_SETMASK, &oldset, NULL);
4395#endif
eb160463
GS		 4396 RETURN;
4397 }
4398 sleep(5);
4399 }
40262ff4
AB		 4400 child_success = childpid > 0;
4401#endif
4402 if (child_success) {
eb160463
GS		 4403 Sigsave_t ihand,qhand; /* place to save signals during system() */
4404 int status;
4405
40262ff4 4406#ifndef __amigaos4__
eb160463
GS		 4407 if (did_pipes)
4408 PerlLIO_close(pp[1]);
40262ff4 4409#endif
64ca3a65 4410#ifndef PERL_MICRO
8aad04aa
JH		 4411 rsignal_save(SIGINT, (Sighandler_t) SIG_IGN, &ihand);
4412 rsignal_save(SIGQUIT, (Sighandler_t) SIG_IGN, &qhand);
64ca3a65 4413#endif
40262ff4
AB		 4414#ifdef __amigaos4__
4415 result = pthread_join(proc, (void **)&status);
4416#else
eb160463
GS		 4417 do {
4418 result = wait4pid(childpid, &status, 0);
4419 } while (result == -1 && errno == EINTR);
40262ff4 4420#endif
64ca3a65 4421#ifndef PERL_MICRO
b1cf9e92
LT		 4422#ifdef HAS_SIGPROCMASK
4423 sigprocmask(SIG_SETMASK, &oldset, NULL);
4424#endif
eb160463
GS		 4425 (void)rsignal_restore(SIGINT, &ihand);
4426 (void)rsignal_restore(SIGQUIT, &qhand);
4427#endif
37038d91 4428 STATUS_NATIVE_CHILD_SET(result == -1 ? -1 : status);
eb160463
GS		 4429 SP = ORIGMARK;
4430 if (did_pipes) {
4431 int errkid;
bb7a0f54 4432 unsigned n = 0;
eb160463
GS		 4433
4434 while (n < sizeof(int)) {
19742f39 4435 const SSize_t n1 = PerlLIO_read(pp[0],
eb160463
GS		 4436 (void*)(((char*)&errkid)+n),
4437 (sizeof(int)) - n);
4438 if (n1 <= 0)
4439 break;
4440 n += n1;
4441 }
4442 PerlLIO_close(pp[0]);
4443 if (n) { /* Error */
4444 if (n != sizeof(int))
5637ef5b 4445 DIE(aTHX_ "panic: kid popen errno read, n=%u", n);
eb160463 4446 errno = errkid; /* Propagate errno from kid */
ea34f6bd 4447#ifdef __amigaos4__
40262ff4
AB		 4448 /* The pipe always has something in it
4449 * so n alone is not enough. */
4450 if (errno > 0)
4451#endif
4452 {
4453 STATUS_NATIVE_CHILD_SET(-1);
4454 }
eb160463
GS		 4455 }
4456 }
b59aed67 4457 XPUSHi(STATUS_CURRENT);
eb160463
GS		 4458 RETURN;
4459 }
40262ff4 4460#ifndef __amigaos4__
21e89b5f 4461#ifdef HAS_SIGPROCMASK
b1cf9e92
LT		 4462 sigprocmask(SIG_SETMASK, &oldset, NULL);
4463#endif
74df577f 4464 if (did_pipes)
eb160463 4465 PerlLIO_close(pp[0]);
e0a1f643 4466 if (PL_op->op_flags & OPf_STACKED) {
0bcc34c2 4467 SV * const really = *++MARK;
e0a1f643
JH		 4468 value = (I32)do_aexec5(really, MARK, SP, pp[1], did_pipes);
4469 }
4470 else if (SP - MARK != 1)
a0714e2c 4471 value = (I32)do_aexec5(NULL, MARK, SP, pp[1], did_pipes);
e0a1f643 4472 else {
8c074e2a 4473 value = (I32)do_exec3(SvPVx_nolen(sv_mortalcopy(*SP)), pp[1], did_pipes);
e0a1f643 4474 }
40262ff4 4475#endif /* __amigaos4__ */
e0a1f643 4476 PerlProc__exit(-1);
d5a9bfb0 4477 }
c3293030 4478#else /* ! FORK or VMS or OS/2 */
922b1888
GS		 4479 PL_statusvalue = 0;
4480 result = 0;
911d147d 4481 if (PL_op->op_flags & OPf_STACKED) {
0bcc34c2 4482 SV * const really = *++MARK;
822c8b4d 4483# if defined(WIN32) || defined(OS2) || defined(__VMS)
54725af6
GS		 4484 value = (I32)do_aspawn(really, MARK, SP);
4485# else
c5be433b 4486 value = (I32)do_aspawn(really, (void **)MARK, (void **)SP);
54725af6 4487# endif
a0d0e21e 4488 }
54725af6 4489 else if (SP - MARK != 1) {
822c8b4d 4490# if defined(WIN32) || defined(OS2) || defined(__VMS)
a0714e2c 4491 value = (I32)do_aspawn(NULL, MARK, SP);
54725af6 4492# else
a0714e2c 4493 value = (I32)do_aspawn(NULL, (void **)MARK, (void **)SP);
54725af6
GS		 4494# endif
4495 }
a0d0e21e 4496 else {
8c074e2a 4497 value = (I32)do_spawn(SvPVx_nolen(sv_mortalcopy(*SP)));
a0d0e21e 4498 }
922b1888
GS		 4499 if (PL_statusvalue == -1) /* hint that value must be returned as is */
4500 result = 1;
2fbb330f 4501 STATUS_NATIVE_CHILD_SET(value);
a0d0e21e 4502 SP = ORIGMARK;
b59aed67 4503 XPUSHi(result ? value : STATUS_CURRENT);
9c12f1e5
RGS		 4504#endif /* !FORK or VMS or OS/2 */
4505#endif
a0d0e21e
LW		 4506 RETURN;
4507}
4508
4509PP(pp_exec)
4510{
20b7effb 4511 dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e
LW		 4512 I32 value;
4513
284167a5 4514 if (TAINTING_get) {
bbd7eb8a
RD		 4515 TAINT_ENV();
4516 while (++MARK <= SP) {
10516c54 4517 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
284167a5 4518 if (TAINT_get)
bbd7eb8a
RD		 4519 break;
4520 }
4521 MARK = ORIGMARK;
5a445156 4522 TAINT_PROPER("exec");
bbd7eb8a 4523 }
738ab09f 4524
45bc9206 4525 PERL_FLUSHALL_FOR_CHILD;
533c011a 4526 if (PL_op->op_flags & OPf_STACKED) {
0bcc34c2 4527 SV * const really = *++MARK;
a0d0e21e
LW		 4528 value = (I32)do_aexec(really, MARK, SP);
4529 }
4530 else if (SP - MARK != 1)
4531#ifdef VMS
a0714e2c 4532 value = (I32)vms_do_aexec(NULL, MARK, SP);
a0d0e21e 4533#else
a0714e2c 4534 value = (I32)do_aexec(NULL, MARK, SP);
a0d0e21e
LW		 4535#endif
4536 else {
a0d0e21e 4537#ifdef VMS
8c074e2a 4538 value = (I32)vms_do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
a0d0e21e 4539#else
5dd60a52 4540 value = (I32)do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
a0d0e21e
LW		 4541#endif
4542 }
4543 SP = ORIGMARK;
b59aed67 4544 XPUSHi(value);
a0d0e21e
LW		 4545 RETURN;
4546}
4547
a0d0e21e
LW		 4548PP(pp_getppid)
4549{
4550#ifdef HAS_GETPPID
20b7effb 4551 dSP; dTARGET;
a0d0e21e
LW		 4552 XPUSHi( getppid() );
4553 RETURN;
4554#else
cea2e8a9 4555 DIE(aTHX_ PL_no_func, "getppid");
a0d0e21e
LW		 4556#endif
4557}
4558
4559PP(pp_getpgrp)
4560{
4561#ifdef HAS_GETPGRP
20b7effb 4562 dSP; dTARGET;
9853a804 4563 Pid_t pgrp;
8af20142
FC		 4564 const Pid_t pid =
4565 (MAXARG < 1) ? 0 : TOPs ? SvIVx(POPs) : ((void)POPs, 0);
a0d0e21e 4566
c3293030 4567#ifdef BSD_GETPGRP
9853a804 4568 pgrp = (I32)BSD_GETPGRP(pid);
a0d0e21e 4569#else
146174a9 4570 if (pid != 0 && pid != PerlProc_getpid())
cea2e8a9 4571 DIE(aTHX_ "POSIX getpgrp can't take an argument");
9853a804 4572 pgrp = getpgrp();
a0d0e21e 4573#endif
9853a804 4574 XPUSHi(pgrp);
a0d0e21e
LW		 4575 RETURN;
4576#else
56a94ef2 4577 DIE(aTHX_ PL_no_func, "getpgrp");
a0d0e21e
LW		 4578#endif
4579}
4580
4581PP(pp_setpgrp)
4582{
4583#ifdef HAS_SETPGRP
20b7effb 4584 dSP; dTARGET;
d8a83dd3
JH		 4585 Pid_t pgrp;
4586 Pid_t pid;
92f2ac5f 4587 pgrp = MAXARG == 2 && (TOPs||POPs) ? POPi : 0;
bae8cfc6 4588 if (MAXARG > 0) pid = TOPs ? TOPi : 0;
92f2ac5f 4589 else {
a0d0e21e 4590 pid = 0;
8ec05255
FC		 4591 EXTEND(SP,1);
4592 SP++;
a0d0e21e 4593 }
a0d0e21e
LW		 4594
4595 TAINT_PROPER("setpgrp");
c3293030
IZ		 4596#ifdef BSD_SETPGRP
4597 SETi( BSD_SETPGRP(pid, pgrp) >= 0 );
a0d0e21e 4598#else
146174a9
CB		 4599 if ((pgrp != 0 && pgrp != PerlProc_getpid())
4600 || (pid != 0 && pid != PerlProc_getpid()))
4601 {
4602 DIE(aTHX_ "setpgrp can't take arguments");
4603 }
a0d0e21e
LW		 4604 SETi( setpgrp() >= 0 );
4605#endif /* USE_BSDPGRP */
4606 RETURN;
4607#else
56a94ef2 4608 DIE(aTHX_ PL_no_func, "setpgrp");
a0d0e21e
LW		 4609#endif
4610}
4611
96d01962
DIM		 4612/*
4613 * The glibc headers typedef __priority_which_t to an enum under C, but
4614 * under C++, it keeps it as int. -Wc++-compat doesn't know this, so we
4615 * need to explicitly cast it to shut up the warning.
4616 */
4617#if defined(__GLIBC__) && ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3) || (__GLIBC__ > 2))
4618# define PRIORITY_WHICH_T(which) (__priority_which_t)which
4619#else
4620# define PRIORITY_WHICH_T(which) which
4621#endif
4622
a0d0e21e
LW		 4623PP(pp_getpriority)
4624{
a0d0e21e 4625#ifdef HAS_GETPRIORITY
20b7effb 4626 dSP; dTARGET;
0bcc34c2
AL		 4627 const int who = POPi;
4628 const int which = TOPi;
96d01962 4629 SETi( getpriority(PRIORITY_WHICH_T(which), who) );
a0d0e21e
LW		 4630 RETURN;
4631#else
56a94ef2 4632 DIE(aTHX_ PL_no_func, "getpriority");
a0d0e21e
LW		 4633#endif
4634}
4635
4636PP(pp_setpriority)
4637{
a0d0e21e 4638#ifdef HAS_SETPRIORITY
20b7effb 4639 dSP; dTARGET;
0bcc34c2
AL		 4640 const int niceval = POPi;
4641 const int who = POPi;
4642 const int which = TOPi;
a0d0e21e 4643 TAINT_PROPER("setpriority");
96d01962 4644 SETi( setpriority(PRIORITY_WHICH_T(which), who, niceval) >= 0 );
a0d0e21e
LW		 4645 RETURN;
4646#else
56a94ef2 4647 DIE(aTHX_ PL_no_func, "setpriority");
a0d0e21e
LW		 4648#endif
4649}
4650
96d01962
DIM		 4651#undef PRIORITY_WHICH_T
4652
a0d0e21e
LW		 4653/* Time calls. */
4654
4655PP(pp_time)
4656{
20b7effb 4657 dSP; dTARGET;
cbdc8872 4658#ifdef BIG_TIME
9e831ddf 4659 XPUSHn( (NV)time(NULL) );
cbdc8872 4660#else
9e831ddf 4661 XPUSHu( (UV)time(NULL) );
cbdc8872 4662#endif
a0d0e21e
LW		 4663 RETURN;
4664}
4665
a0d0e21e
LW		 4666PP(pp_tms)
4667{
9cad6237 4668#ifdef HAS_TIMES
39644a26 4669 dSP;
25983af4 4670 struct tms timesbuf;
a0d0e21e 4671
25983af4
NC		 4672 EXTEND(SP, 4);
4673 (void)PerlProc_times(&timesbuf);
4674
4675 mPUSHn(((NV)timesbuf.tms_utime)/(NV)PL_clocktick);
82334630 4676 if (GIMME_V == G_ARRAY) {
25983af4
NC		 4677 mPUSHn(((NV)timesbuf.tms_stime)/(NV)PL_clocktick);
4678 mPUSHn(((NV)timesbuf.tms_cutime)/(NV)PL_clocktick);
4679 mPUSHn(((NV)timesbuf.tms_cstime)/(NV)PL_clocktick);
a0d0e21e
LW		 4680 }
4681 RETURN;
8d698507 4682#elif defined(PERL_MICRO)
2f42fcb0 4683 dSP;
6e449a3a 4684 mPUSHn(0.0);
2f42fcb0 4685 EXTEND(SP, 4);
82334630 4686 if (GIMME_V == G_ARRAY) {
6e449a3a
MHM		 4687 mPUSHn(0.0);
4688 mPUSHn(0.0);
4689 mPUSHn(0.0);
2f42fcb0
JH		 4690 }
4691 RETURN;
8d698507 4692#else
9cad6237 4693 DIE(aTHX_ "times not implemented");
55497cff 4694#endif /* HAS_TIMES */
a0d0e21e
LW		 4695}
4696
fc003d4b
MS		 4697/* The 32 bit int year limits the times we can represent to these
4698 boundaries with a few days wiggle room to account for time zone
4699 offsets
4700*/
4701/* Sat Jan 3 00:00:00 -2147481748 */
4702#define TIME_LOWER_BOUND -67768100567755200.0
4703/* Sun Dec 29 12:00:00 2147483647 */
4704#define TIME_UPPER_BOUND 67767976233316800.0
4705
b1c05ba5
DM		 4706
4707/* also used for: pp_localtime() */
4708
a0d0e21e
LW		 4709PP(pp_gmtime)
4710{
39644a26 4711 dSP;
a272e669 4712 Time64_T when;
806a119a
MS		 4713 struct TM tmbuf;
4714 struct TM *err;
a8cb0261 4715 const char *opname = PL_op->op_type == OP_LOCALTIME ? "localtime" : "gmtime";
27da23d5
JH		 4716 static const char * const dayname[] =
4717 {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
4718 static const char * const monname[] =
4719 {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
4720 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
a0d0e21e 4721
0163043a 4722 if (MAXARG < 1 || (!TOPs && ((void)POPs, 1))) {
a272e669
MS		 4723 time_t now;
4724 (void)time(&now);
4725 when = (Time64_T)now;
4726 }
7315c673 4727 else {
7eb4f9b7 4728 NV input = Perl_floor(POPn);
2b9215fd 4729 const bool pl_isnan = Perl_isnan(input);
8efababc 4730 when = (Time64_T)input;
2b9215fd 4731 if (UNLIKELY(pl_isnan || when != input)) {
dcbac5bb 4732 /* diag_listed_as: gmtime(%f) too large */
a2a5de95 4733 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
7eb4f9b7 4734 "%s(%.0" NVff ") too large", opname, input);
2b9215fd 4735 if (pl_isnan) {
d8bd3d82
FC		 4736 err = NULL;
4737 goto failed;
4738 }
7315c673
MS		 4739 }
4740 }
a0d0e21e 4741
fc003d4b 4742 if ( TIME_LOWER_BOUND > when ) {
dcbac5bb 4743 /* diag_listed_as: gmtime(%f) too small */
fc003d4b 4744 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
7eb4f9b7 4745 "%s(%.0" NVff ") too small", opname, when);
fc003d4b
MS		 4746 err = NULL;
4747 }
4748 else if( when > TIME_UPPER_BOUND ) {
dcbac5bb 4749 /* diag_listed_as: gmtime(%f) too small */
fc003d4b 4750 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
7eb4f9b7 4751 "%s(%.0" NVff ") too large", opname, when);
fc003d4b
MS		 4752 err = NULL;
4753 }
4754 else {
4755 if (PL_op->op_type == OP_LOCALTIME)
e27be216 4756 err = Perl_localtime64_r(&when, &tmbuf);
fc003d4b 4757 else
e27be216 4758 err = Perl_gmtime64_r(&when, &tmbuf);
fc003d4b 4759 }
a0d0e21e 4760
a2a5de95 4761 if (err == NULL) {
b35b96b6 4762 /* diag_listed_as: gmtime(%f) failed */
8efababc 4763 /* XXX %lld broken for quads */
d8bd3d82 4764 failed:
a2a5de95 4765 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
7eb4f9b7 4766 "%s(%.0" NVff ") failed", opname, when);
5b6366c2 4767 }
a0d0e21e 4768
82334630 4769 if (GIMME_V != G_ARRAY) { /* scalar context */
9a5ff6d9 4770 EXTEND(SP, 1);
a272e669 4771 if (err == NULL)
a0d0e21e 4772 RETPUSHUNDEF;
b35b96b6 4773 else {
d0a10fd8
FC		 4774 dTARGET;
4775 PUSHs(TARG);
147e3846 4776 Perl_sv_setpvf_mg(aTHX_ TARG, "%s %s %2d %02d:%02d:%02d %" IVdf,
b35b96b6
JH		 4777 dayname[tmbuf.tm_wday],
4778 monname[tmbuf.tm_mon],
4779 tmbuf.tm_mday,
4780 tmbuf.tm_hour,
4781 tmbuf.tm_min,
4782 tmbuf.tm_sec,
d0a10fd8 4783 (IV)tmbuf.tm_year + 1900);
b35b96b6 4784 }
a0d0e21e 4785 }
a272e669
MS		 4786 else { /* list context */
4787 if ( err == NULL )
4788 RETURN;
4789
9a5ff6d9
AB		 4790 EXTEND(SP, 9);
4791 EXTEND_MORTAL(9);
a272e669
MS		 4792 mPUSHi(tmbuf.tm_sec);
4793 mPUSHi(tmbuf.tm_min);
4794 mPUSHi(tmbuf.tm_hour);
4795 mPUSHi(tmbuf.tm_mday);
4796 mPUSHi(tmbuf.tm_mon);
7315c673 4797 mPUSHn(tmbuf.tm_year);
a272e669
MS		 4798 mPUSHi(tmbuf.tm_wday);
4799 mPUSHi(tmbuf.tm_yday);
4800 mPUSHi(tmbuf.tm_isdst);
a0d0e21e
LW		 4801 }
4802 RETURN;
4803}
4804
4805PP(pp_alarm)
4806{
9cad6237 4807#ifdef HAS_ALARM
20b7effb 4808 dSP; dTARGET;
add0dc91
JH		 4809 /* alarm() takes an unsigned int number of seconds, and return the
4810 * unsigned int number of seconds remaining in the previous alarm
4811 * (alarms don't stack). Therefore negative return values are not
4812 * possible. */
4813 int anum = POPi;
4814 if (anum < 0) {
4815 /* Note that while the C library function alarm() as such has
4816 * no errors defined (or in other words, properly behaving client
4817 * code shouldn't expect any), alarm() being obsoleted by
4818 * setitimer() and often being implemented in terms of
4819 * setitimer(), can fail. */
4820 /* diag_listed_as: %s() with negative argument */
4821 Perl_ck_warner_d(aTHX_ packWARN(WARN_MISC),
4822 "alarm() with negative argument");
4823 SETERRNO(EINVAL, LIB_INVARG);
4824 RETPUSHUNDEF;
4825 }
4826 else {
4827 unsigned int retval = alarm(anum);
4828 if ((int)retval < 0) /* Strictly speaking "cannot happen". */
4829 RETPUSHUNDEF;
4830 PUSHu(retval);
4831 RETURN;
4832 }
a0d0e21e 4833#else
0322a713 4834 DIE(aTHX_ PL_no_func, "alarm");
a0d0e21e
LW		 4835#endif
4836}
4837
4838PP(pp_sleep)
4839{
20b7effb 4840 dSP; dTARGET;
a0d0e21e
LW		 4841 Time_t lasttime;
4842 Time_t when;
4843
4844 (void)time(&lasttime);
0da4a804 4845 if (MAXARG < 1 || (!TOPs && !POPs))
76e3520e 4846 PerlProc_pause();
a0d0e21e 4847 else {
19742f39 4848 const I32 duration = POPi;
393bc9b3
JH		 4849 if (duration < 0) {
4850 /* diag_listed_as: %s() with negative argument */
4851 Perl_ck_warner_d(aTHX_ packWARN(WARN_MISC),
4852 "sleep() with negative argument");
4853 SETERRNO(EINVAL, LIB_INVARG);
725c44f9 4854 XPUSHs(&PL_sv_zero);
393bc9b3
JH		 4855 RETURN;
4856 } else {
4857 PerlProc_sleep((unsigned int)duration);
4858 }
a0d0e21e
LW		 4859 }
4860 (void)time(&when);
9e831ddf 4861 XPUSHu((UV)(when - lasttime));
a0d0e21e
LW		 4862 RETURN;
4863}
4864
4865/* Shared memory. */
c9f7ac20 4866/* Merged with some message passing. */
a0d0e21e 4867
b1c05ba5
DM		 4868/* also used for: pp_msgrcv() pp_msgsnd() pp_semop() pp_shmread() */
4869
a0d0e21e
LW		 4870PP(pp_shmwrite)
4871{
4872#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
20b7effb 4873 dSP; dMARK; dTARGET;
c9f7ac20
NC		 4874 const int op_type = PL_op->op_type;
4875 I32 value;
a0d0e21e 4876
c9f7ac20
NC		 4877 switch (op_type) {
4878 case OP_MSGSND:
4879 value = (I32)(do_msgsnd(MARK, SP) >= 0);
4880 break;
4881 case OP_MSGRCV:
4882 value = (I32)(do_msgrcv(MARK, SP) >= 0);
4883 break;
ca563b4e
NC		 4884 case OP_SEMOP:
4885 value = (I32)(do_semop(MARK, SP) >= 0);
4886 break;
c9f7ac20
NC		 4887 default:
4888 value = (I32)(do_shmio(op_type, MARK, SP) >= 0);
4889 break;
4890 }
a0d0e21e 4891
a0d0e21e
LW		 4892 SP = MARK;
4893 PUSHi(value);
4894 RETURN;
4895#else
897d3989 4896 return Perl_pp_semget(aTHX);
a0d0e21e
LW		 4897#endif
4898}
4899
4900/* Semaphores. */
4901
b1c05ba5
DM		 4902/* also used for: pp_msgget() pp_shmget() */
4903
a0d0e21e
LW		 4904PP(pp_semget)
4905{
4906#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
20b7effb 4907 dSP; dMARK; dTARGET;
0bcc34c2 4908 const int anum = do_ipcget(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 4909 SP = MARK;
4910 if (anum == -1)
4911 RETPUSHUNDEF;
4912 PUSHi(anum);
4913 RETURN;
4914#else
cea2e8a9 4915 DIE(aTHX_ "System V IPC is not implemented on this machine");
a0d0e21e
LW		 4916#endif
4917}
4918
b1c05ba5
DM		 4919/* also used for: pp_msgctl() pp_shmctl() */
4920
a0d0e21e
LW		 4921PP(pp_semctl)
4922{
4923#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
20b7effb 4924 dSP; dMARK; dTARGET;
0bcc34c2 4925 const int anum = do_ipcctl(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 4926 SP = MARK;
4927 if (anum == -1)
fa367bcb 4928 RETPUSHUNDEF;
a0d0e21e
LW		 4929 if (anum != 0) {
4930 PUSHi(anum);
4931 }
4932 else {
8903cb82 4933 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e
LW		 4934 }
4935 RETURN;
4936#else
897d3989 4937 return Perl_pp_semget(aTHX);
a0d0e21e
LW		 4938#endif
4939}
4940
5cdc4e88
NC		 4941/* I can't const this further without getting warnings about the types of
4942 various arrays passed in from structures. */
4943static SV *
4944S_space_join_names_mortal(pTHX_ char *const *array)
4945{
7c58897d 4946 SV *target;
5cdc4e88 4947
d35c1b5e 4948 if (array && *array) {
84bafc02 4949 target = newSVpvs_flags("", SVs_TEMP);
5cdc4e88
NC		 4950 while (1) {
4951 sv_catpv(target, *array);
4952 if (!*++array)
4953 break;
4954 sv_catpvs(target, " ");
4955 }
7c58897d
NC		 4956 } else {
4957 target = sv_mortalcopy(&PL_sv_no);
5cdc4e88
NC		 4958 }
4959 return target;
4960}
4961
a0d0e21e
LW		 4962/* Get system info. */
4963
b1c05ba5
DM		 4964/* also used for: pp_ghbyaddr() pp_ghbyname() */
4965
a0d0e21e
LW		 4966PP(pp_ghostent)
4967{
693762b4 4968#if defined(HAS_GETHOSTBYNAME) || defined(HAS_GETHOSTBYADDR) || defined(HAS_GETHOSTENT)
20b7effb 4969 dSP;
533c011a 4970 I32 which = PL_op->op_type;
eb578fdb
KW		 4971 char **elem;
4972 SV *sv;
dc45a647 4973#ifndef HAS_GETHOST_PROTOS /* XXX Do we need individual probes? */
1d88b533
JH		 4974 struct hostent *gethostbyaddr(Netdb_host_t, Netdb_hlen_t, int);
4975 struct hostent *gethostbyname(Netdb_name_t);
4976 struct hostent *gethostent(void);
a0d0e21e 4977#endif
07822e36 4978 struct hostent *hent = NULL;
a0d0e21e
LW		 4979 unsigned long len;
4980
4981 EXTEND(SP, 10);
edd309b7 4982 if (which == OP_GHBYNAME) {
dc45a647 4983#ifdef HAS_GETHOSTBYNAME
0bcc34c2 4984 const char* const name = POPpbytex;
edd309b7 4985 hent = PerlSock_gethostbyname(name);
dc45a647 4986#else
cea2e8a9 4987 DIE(aTHX_ PL_no_sock_func, "gethostbyname");
dc45a647 4988#endif
edd309b7 4989 }
a0d0e21e 4990 else if (which == OP_GHBYADDR) {
dc45a647 4991#ifdef HAS_GETHOSTBYADDR
0bcc34c2
AL		 4992 const int addrtype = POPi;
4993 SV * const addrsv = POPs;
a0d0e21e 4994 STRLEN addrlen;
48fc4736 4995 const char *addr = (char *)SvPVbyte(addrsv, addrlen);
a0d0e21e 4996
48fc4736 4997 hent = PerlSock_gethostbyaddr(addr, (Netdb_hlen_t) addrlen, addrtype);
dc45a647 4998#else
cea2e8a9 4999 DIE(aTHX_ PL_no_sock_func, "gethostbyaddr");
dc45a647 5000#endif
a0d0e21e
LW		 5001 }
5002 else
5003#ifdef HAS_GETHOSTENT
6ad3d225 5004 hent = PerlSock_gethostent();
a0d0e21e 5005#else
cea2e8a9 5006 DIE(aTHX_ PL_no_sock_func, "gethostent");
a0d0e21e
LW		 5007#endif
5008
5009#ifdef HOST_NOT_FOUND
10bc17b6
JH		 5010 if (!hent) {
5011#ifdef USE_REENTRANT_API
5012# ifdef USE_GETHOSTENT_ERRNO
5013 h_errno = PL_reentrant_buffer->_gethostent_errno;
5014# endif
5015#endif
37038d91 5016 STATUS_UNIX_SET(h_errno);
10bc17b6 5017 }
a0d0e21e
LW		 5018#endif
5019
82334630 5020 if (GIMME_V != G_ARRAY) {
a0d0e21e
LW		 5021 PUSHs(sv = sv_newmortal());
5022 if (hent) {
5023 if (which == OP_GHBYNAME) {
fd0af264 5024 if (hent->h_addr)
5025 sv_setpvn(sv, hent->h_addr, hent->h_length);
a0d0e21e
LW		 5026 }
5027 else
5028 sv_setpv(sv, (char*)hent->h_name);
5029 }
5030 RETURN;
5031 }
5032
5033 if (hent) {
6e449a3a 5034 mPUSHs(newSVpv((char*)hent->h_name, 0));
931e0695 5035 PUSHs(space_join_names_mortal(hent->h_aliases));
6e449a3a 5036 mPUSHi(hent->h_addrtype);
a0d0e21e 5037 len = hent->h_length;
6e449a3a 5038 mPUSHi(len);
a0d0e21e
LW		 5039#ifdef h_addr
5040 for (elem = hent->h_addr_list; elem && *elem; elem++) {
6e449a3a 5041 mXPUSHp(*elem, len);
a0d0e21e
LW		 5042 }
5043#else
fd0af264 5044 if (hent->h_addr)
22f1178f 5045 mPUSHp(hent->h_addr, len);
7c58897d
NC		 5046 else
5047 PUSHs(sv_mortalcopy(&PL_sv_no));
a0d0e21e
LW		 5048#endif /* h_addr */
5049 }
5050 RETURN;
5051#else
7844cc62 5052 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 5053#endif
5054}
5055
b1c05ba5
DM		 5056/* also used for: pp_gnbyaddr() pp_gnbyname() */
5057
a0d0e21e
LW		 5058PP(pp_gnetent)
5059{
693762b4 5060#if defined(HAS_GETNETBYNAME) || defined(HAS_GETNETBYADDR) || defined(HAS_GETNETENT)
20b7effb 5061 dSP;
533c011a 5062 I32 which = PL_op->op_type;
eb578fdb 5063 SV *sv;
dc45a647 5064#ifndef HAS_GETNET_PROTOS /* XXX Do we need individual probes? */
1d88b533
JH		 5065 struct netent *getnetbyaddr(Netdb_net_t, int);
5066 struct netent *getnetbyname(Netdb_name_t);
5067 struct netent *getnetent(void);
8ac85365 5068#endif
a0d0e21e
LW		 5069 struct netent *nent;
5070
edd309b7 5071 if (which == OP_GNBYNAME){
dc45a647 5072#ifdef HAS_GETNETBYNAME
0bcc34c2 5073 const char * const name = POPpbytex;
edd309b7 5074 nent = PerlSock_getnetbyname(name);
dc45a647 5075#else
cea2e8a9 5076 DIE(aTHX_ PL_no_sock_func, "getnetbyname");
dc45a647 5077#endif
edd309b7 5078 }
a0d0e21e 5079 else if (which == OP_GNBYADDR) {
dc45a647 5080#ifdef HAS_GETNETBYADDR
0bcc34c2
AL		 5081 const int addrtype = POPi;
5082 const Netdb_net_t addr = (Netdb_net_t) (U32)POPu;
76e3520e 5083 nent = PerlSock_getnetbyaddr(addr, addrtype);
dc45a647 5084#else
cea2e8a9 5085 DIE(aTHX_ PL_no_sock_func, "getnetbyaddr");
dc45a647 5086#endif
a0d0e21e
LW		 5087 }
5088 else
dc45a647 5089#ifdef HAS_GETNETENT
76e3520e 5090 nent = PerlSock_getnetent();
dc45a647 5091#else
cea2e8a9 5092 DIE(aTHX_ PL_no_sock_func, "getnetent");
dc45a647 5093#endif
a0d0e21e 5094
10bc17b6
JH		 5095#ifdef HOST_NOT_FOUND
5096 if (!nent) {
5097#ifdef USE_REENTRANT_API
5098# ifdef USE_GETNETENT_ERRNO
5099 h_errno = PL_reentrant_buffer->_getnetent_errno;
5100# endif
5101#endif
37038d91 5102 STATUS_UNIX_SET(h_errno);
10bc17b6
JH		 5103 }
5104#endif
5105
a0d0e21e 5106 EXTEND(SP, 4);
82334630 5107 if (GIMME_V != G_ARRAY) {
a0d0e21e
LW		 5108 PUSHs(sv = sv_newmortal());
5109 if (nent) {
5110 if (which == OP_GNBYNAME)
1e422769 5111 sv_setiv(sv, (IV)nent->n_net);
a0d0e21e
LW		 5112 else
5113 sv_setpv(sv, nent->n_name);
5114 }
5115 RETURN;
5116 }
5117
5118 if (nent) {
6e449a3a 5119 mPUSHs(newSVpv(nent->n_name, 0));
931e0695 5120 PUSHs(space_join_names_mortal(nent->n_aliases));
6e449a3a
MHM		 5121 mPUSHi(nent->n_addrtype);
5122 mPUSHi(nent->n_net);
a0d0e21e
LW		 5123 }
5124
5125 RETURN;
5126#else
7844cc62 5127 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 5128#endif
5129}
5130
b1c05ba5
DM		 5131
5132/* also used for: pp_gpbyname() pp_gpbynumber() */
5133
a0d0e21e
LW		 5134PP(pp_gprotoent)
5135{
693762b4 5136#if defined(HAS_GETPROTOBYNAME) || defined(HAS_GETPROTOBYNUMBER) || defined(HAS_GETPROTOENT)
20b7effb 5137 dSP;
533c011a 5138 I32 which = PL_op->op_type;
eb578fdb 5139 SV *sv;
dc45a647 5140#ifndef HAS_GETPROTO_PROTOS /* XXX Do we need individual probes? */
1d88b533
JH		 5141 struct protoent *getprotobyname(Netdb_name_t);
5142 struct protoent *getprotobynumber(int);
5143 struct protoent *getprotoent(void);
8ac85365 5144#endif
a0d0e21e
LW		 5145 struct protoent *pent;
5146
edd309b7 5147 if (which == OP_GPBYNAME) {
e5c9fcd0 5148#ifdef HAS_GETPROTOBYNAME
0bcc34c2 5149 const char* const name = POPpbytex;
edd309b7 5150 pent = PerlSock_getprotobyname(name);
e5c9fcd0 5151#else
cea2e8a9 5152 DIE(aTHX_ PL_no_sock_func, "getprotobyname");
e5c9fcd0 5153#endif
edd309b7
JH		 5154 }
5155 else if (which == OP_GPBYNUMBER) {
e5c9fcd0 5156#ifdef HAS_GETPROTOBYNUMBER
0bcc34c2 5157 const int number = POPi;
edd309b7 5158 pent = PerlSock_getprotobynumber(number);
e5c9fcd0 5159#else
edd309b7 5160 DIE(aTHX_ PL_no_sock_func, "getprotobynumber");
e5c9fcd0 5161#endif
edd309b7 5162 }
a0d0e21e 5163 else
e5c9fcd0 5164#ifdef HAS_GETPROTOENT
6ad3d225 5165 pent = PerlSock_getprotoent();
e5c9fcd0 5166#else
cea2e8a9 5167 DIE(aTHX_ PL_no_sock_func, "getprotoent");
e5c9fcd0 5168#endif
a0d0e21e
LW		 5169
5170 EXTEND(SP, 3);
82334630 5171 if (GIMME_V != G_ARRAY) {
a0d0e21e
LW		 5172 PUSHs(sv = sv_newmortal());
5173 if (pent) {
5174 if (which == OP_GPBYNAME)
1e422769 5175 sv_setiv(sv, (IV)pent->p_proto);
a0d0e21e
LW		 5176 else
5177 sv_setpv(sv, pent->p_name);
5178 }
5179 RETURN;
5180 }
5181
5182 if (pent) {
6e449a3a 5183 mPUSHs(newSVpv(pent->p_name, 0));
931e0695 5184 PUSHs(space_join_names_mortal(pent->p_aliases));
6e449a3a 5185 mPUSHi(pent->p_proto);
a0d0e21e
LW		 5186 }
5187
5188 RETURN;
5189#else
7844cc62 5190 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 5191#endif
5192}
5193
b1c05ba5
DM		 5194
5195/* also used for: pp_gsbyname() pp_gsbyport() */
5196
a0d0e21e
LW		 5197PP(pp_gservent)
5198{
693762b4 5199#if defined(HAS_GETSERVBYNAME) || defined(HAS_GETSERVBYPORT) || defined(HAS_GETSERVENT)
20b7effb 5200 dSP;
533c011a 5201 I32 which = PL_op->op_type;
eb578fdb 5202 SV *sv;
dc45a647 5203#ifndef HAS_GETSERV_PROTOS /* XXX Do we need individual probes? */
1d88b533
JH		 5204 struct servent *getservbyname(Netdb_name_t, Netdb_name_t);
5205 struct servent *getservbyport(int, Netdb_name_t);
5206 struct servent *getservent(void);
8ac85365 5207#endif
a0d0e21e
LW		 5208 struct servent *sent;
5209
5210 if (which == OP_GSBYNAME) {
dc45a647 5211#ifdef HAS_GETSERVBYNAME
0bcc34c2
AL		 5212 const char * const proto = POPpbytex;
5213 const char * const name = POPpbytex;
bd61b366 5214 sent = PerlSock_getservbyname(name, (proto && !*proto) ? NULL : proto);
dc45a647 5215#else
cea2e8a9 5216 DIE(aTHX_ PL_no_sock_func, "getservbyname");
dc45a647 5217#endif
a0d0e21e
LW		 5218 }
5219 else if (which == OP_GSBYPORT) {
dc45a647 5220#ifdef HAS_GETSERVBYPORT
0bcc34c2 5221 const char * const proto = POPpbytex;
eb160463 5222 unsigned short port = (unsigned short)POPu;
6ad3d225 5223 port = PerlSock_htons(port);
bd61b366 5224 sent = PerlSock_getservbyport(port, (proto && !*proto) ? NULL : proto);
dc45a647 5225#else
cea2e8a9 5226 DIE(aTHX_ PL_no_sock_func, "getservbyport");
dc45a647 5227#endif
a0d0e21e
LW		 5228 }
5229 else
e5c9fcd0 5230#ifdef HAS_GETSERVENT
6ad3d225 5231 sent = PerlSock_getservent();
e5c9fcd0 5232#else
cea2e8a9 5233 DIE(aTHX_ PL_no_sock_func, "getservent");
e5c9fcd0 5234#endif
a0d0e21e
LW		 5235
5236 EXTEND(SP, 4);
82334630 5237 if (GIMME_V != G_ARRAY) {
a0d0e21e
LW		 5238 PUSHs(sv = sv_newmortal());
5239 if (sent) {
5240 if (which == OP_GSBYNAME) {
6ad3d225 5241 sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
a0d0e21e
LW		 5242 }
5243 else
5244 sv_setpv(sv, sent->s_name);
5245 }
5246 RETURN;
5247 }
5248
5249 if (sent) {
6e449a3a 5250 mPUSHs(newSVpv(sent->s_name, 0));
931e0695 5251 PUSHs(space_join_names_mortal(sent->s_aliases));
6e449a3a 5252 mPUSHi(PerlSock_ntohs(sent->s_port));
6e449a3a 5253 mPUSHs(newSVpv(sent->s_proto, 0));
a0d0e21e
LW		 5254 }
5255
5256 RETURN;
5257#else
7844cc62 5258 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 5259#endif
5260}
5261
b1c05ba5
DM		 5262
5263/* also used for: pp_snetent() pp_sprotoent() pp_sservent() */
5264
a0d0e21e
LW		 5265PP(pp_shostent)
5266{
20b7effb 5267 dSP;
396166e1
NC		 5268 const int stayopen = TOPi;
5269 switch(PL_op->op_type) {
5270 case OP_SHOSTENT:
5271#ifdef HAS_SETHOSTENT
5272 PerlSock_sethostent(stayopen);
a0d0e21e 5273#else
396166e1 5274 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e 5275#endif
396166e1 5276 break;
396166e1 5277 case OP_SNETENT:
72fb396a 5278#ifdef HAS_SETNETENT
396166e1 5279 PerlSock_setnetent(stayopen);
a0d0e21e 5280#else
396166e1 5281 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e 5282#endif
396166e1
NC		 5283 break;
5284 case OP_SPROTOENT:
693762b4 5285#ifdef HAS_SETPROTOENT
396166e1 5286 PerlSock_setprotoent(stayopen);
a0d0e21e 5287#else
396166e1 5288 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e 5289#endif
396166e1
NC		 5290 break;
5291 case OP_SSERVENT:
693762b4 5292#ifdef HAS_SETSERVENT
396166e1 5293 PerlSock_setservent(stayopen);
a0d0e21e 5294#else
396166e1 5295 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e 5296#endif
396166e1
NC		 5297 break;
5298 }
5299 RETSETYES;
a0d0e21e
LW		 5300}
5301
b1c05ba5
DM		 5302
5303/* also used for: pp_egrent() pp_enetent() pp_eprotoent() pp_epwent()
5304 * pp_eservent() pp_sgrent() pp_spwent() */
5305
a0d0e21e
LW		 5306PP(pp_ehostent)
5307{
20b7effb 5308 dSP;
d8ef1fcd
NC		 5309 switch(PL_op->op_type) {
5310 case OP_EHOSTENT:
5311#ifdef HAS_ENDHOSTENT
5312 PerlSock_endhostent();
a0d0e21e 5313#else
d8ef1fcd 5314 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e 5315#endif
d8ef1fcd
NC		 5316 break;
5317 case OP_ENETENT:
693762b4 5318#ifdef HAS_ENDNETENT
d8ef1fcd 5319 PerlSock_endnetent();
a0d0e21e 5320#else
d8ef1fcd 5321 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e 5322#endif
d8ef1fcd
NC		 5323 break;
5324 case OP_EPROTOENT:
693762b4 5325#ifdef HAS_ENDPROTOENT
d8ef1fcd 5326 PerlSock_endprotoent();
a0d0e21e 5327#else
d8ef1fcd 5328 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e 5329#endif
d8ef1fcd
NC		 5330 break;
5331 case OP_ESERVENT:
693762b4 5332#ifdef HAS_ENDSERVENT
d8ef1fcd 5333 PerlSock_endservent();
a0d0e21e 5334#else
d8ef1fcd 5335 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e 5336#endif
d8ef1fcd 5337 break;
720d5dbf
NC		 5338 case OP_SGRENT:
5339#if defined(HAS_GROUP) && defined(HAS_SETGRENT)
5340 setgrent();
5341#else
5342 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5343#endif
5344 break;
5345 case OP_EGRENT:
5346#if defined(HAS_GROUP) && defined(HAS_ENDGRENT)
5347 endgrent();
5348#else
5349 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5350#endif
5351 break;
5352 case OP_SPWENT:
5353#if defined(HAS_PASSWD) && defined(HAS_SETPWENT)
5354 setpwent();
5355#else
5356 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5357#endif
5358 break;
5359 case OP_EPWENT:
5360#if defined(HAS_PASSWD) && defined(HAS_ENDPWENT)
5361 endpwent();
5362#else
5363 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
5364#endif
5365 break;
d8ef1fcd
NC		 5366 }
5367 EXTEND(SP,1);
5368 RETPUSHYES;
a0d0e21e
LW		 5369}
5370
b1c05ba5
DM		 5371
5372/* also used for: pp_gpwnam() pp_gpwuid() */
5373
a0d0e21e
LW		 5374PP(pp_gpwent)
5375{
0994c4d0 5376#ifdef HAS_PASSWD
20b7effb 5377 dSP;
533c011a 5378 I32 which = PL_op->op_type;
eb578fdb 5379 SV *sv;
e3aefe8d 5380 struct passwd *pwent = NULL;
301e8125 5381 /*
bcf53261
JH		 5382 * We currently support only the SysV getsp* shadow password interface.
5383 * The interface is declared in <shadow.h> and often one needs to link
5384 * with -lsecurity or some such.
5385 * This interface is used at least by Solaris, HP-UX, IRIX, and Linux.
5386 * (and SCO?)
5387 *
5388 * AIX getpwnam() is clever enough to return the encrypted password
5389 * only if the caller (euid?) is root.
5390 *
e549f1c5 5391 * There are at least three other shadow password APIs. Many platforms
bcf53261
JH		 5392 * seem to contain more than one interface for accessing the shadow
5393 * password databases, possibly for compatibility reasons.
3813c136 5394 * The getsp*() is by far he simplest one, the other two interfaces
bcf53261
JH		 5395 * are much more complicated, but also very similar to each other.
5396 *
5397 * <sys/types.h>
5398 * <sys/security.h>
5399 * <prot.h>
5400 * struct pr_passwd *getprpw*();
5401 * The password is in
3813c136
JH		 5402 * char getprpw*(...).ufld.fd_encrypt[]
5403 * Mention HAS_GETPRPWNAM here so that Configure probes for it.
bcf53261
JH		 5404 *
5405 * <sys/types.h>
5406 * <sys/security.h>
5407 * <prot.h>
5408 * struct es_passwd *getespw*();
5409 * The password is in
5410 * char *(getespw*(...).ufld.fd_encrypt)
3813c136 5411 * Mention HAS_GETESPWNAM here so that Configure probes for it.
bcf53261 5412 *
e1920a95 5413 * <userpw.h> (AIX)
e549f1c5
JH		 5414 * struct userpw *getuserpw();
5415 * The password is in
5416 * char *(getuserpw(...)).spw_upw_passwd
5417 * (but the de facto standard getpwnam() should work okay)
5418 *
3813c136 5419 * Mention I_PROT here so that Configure probes for it.
bcf53261
JH		 5420 *
5421 * In HP-UX for getprpw*() the manual page claims that one should include
5422 * <hpsecurity.h> instead of <sys/security.h>, but that is not needed
5423 * if one includes <shadow.h> as that includes <hpsecurity.h>,
5424 * and pp_sys.c already includes <shadow.h> if there is such.
3813c136
JH		 5425 *
5426 * Note that <sys/security.h> is already probed for, but currently
5427 * it is only included in special cases.
301e8125 5428 *
bcf53261 5429 * In Digital UNIX/Tru64 if using the getespw*() (which seems to be
a3815e44 5430 * the preferred interface, even though also the getprpw*() interface
bcf53261 5431 * is available) one needs to link with -lsecurity -ldb -laud -lm.
3813c136
JH		 5432 * One also needs to call set_auth_parameters() in main() before
5433 * doing anything else, whether one is using getespw*() or getprpw*().
5434 *
5435 * Note that accessing the shadow databases can be magnitudes
5436 * slower than accessing the standard databases.
bcf53261
JH		 5437 *
5438 * --jhi
5439 */
a0d0e21e 5440
9e5f0c48
JH		 5441# if defined(__CYGWIN__) && defined(USE_REENTRANT_API)
5442 /* Cygwin 1.5.3-1 has buggy getpwnam_r() and getpwuid_r():
5443 * the pw_comment is left uninitialized. */
5444 PL_reentrant_buffer->_pwent_struct.pw_comment = NULL;
5445# endif
5446
e3aefe8d
JH		 5447 switch (which) {
5448 case OP_GPWNAM:
edd309b7 5449 {
0bcc34c2 5450 const char* const name = POPpbytex;
edd309b7
JH		 5451 pwent = getpwnam(name);
5452 }
5453 break;
e3aefe8d 5454 case OP_GPWUID:
edd309b7
JH		 5455 {
5456 Uid_t uid = POPi;
5457 pwent = getpwuid(uid);
5458 }
e3aefe8d
JH		 5459 break;
5460 case OP_GPWENT:
1883634f 5461# ifdef HAS_GETPWENT
e3aefe8d 5462 pwent = getpwent();
faea9016
IRC		 5463#ifdef POSIX_BC /* In some cases pw_passwd has invalid addresses */
5464 if (pwent) pwent = getpwnam(pwent->pw_name);
5465#endif
1883634f 5466# else
a45d1c96 5467 DIE(aTHX_ PL_no_func, "getpwent");
1883634f 5468# endif
e3aefe8d
JH		 5469 break;
5470 }
8c0bfa08 5471
a0d0e21e 5472 EXTEND(SP, 10);
82334630 5473 if (GIMME_V != G_ARRAY) {
a0d0e21e
LW		 5474 PUSHs(sv = sv_newmortal());
5475 if (pwent) {
5476 if (which == OP_GPWNAM)
dfff4baf 5477 sv_setuid(sv, pwent->pw_uid);
a0d0e21e
LW		 5478 else
5479 sv_setpv(sv, pwent->pw_name);
5480 }
5481 RETURN;
5482 }
5483
5484 if (pwent) {
6e449a3a 5485 mPUSHs(newSVpv(pwent->pw_name, 0));
6ee623d5 5486
6e449a3a
MHM		 5487 sv = newSViv(0);
5488 mPUSHs(sv);
3813c136
JH		 5489 /* If we have getspnam(), we try to dig up the shadow
5490 * password. If we are underprivileged, the shadow
5491 * interface will set the errno to EACCES or similar,
5492 * and return a null pointer. If this happens, we will
5493 * use the dummy password (usually "*" or "x") from the
5494 * standard password database.
5495 *
5496 * In theory we could skip the shadow call completely
5497 * if euid != 0 but in practice we cannot know which
5498 * security measures are guarding the shadow databases
5499 * on a random platform.
5500 *
5501 * Resist the urge to use additional shadow interfaces.
5502 * Divert the urge to writing an extension instead.
5503 *
5504 * --jhi */
e549f1c5
JH		 5505 /* Some AIX setups falsely(?) detect some getspnam(), which
5506 * has a different API than the Solaris/IRIX one. */
5507# if defined(HAS_GETSPNAM) && !defined(_AIX)
3813c136 5508 {
4ee39169 5509 dSAVE_ERRNO;
0bcc34c2
AL		 5510 const struct spwd * const spwent = getspnam(pwent->pw_name);
5511 /* Save and restore errno so that
3813c136 5512 * underprivileged attempts seem
486ec47a 5513 * to have never made the unsuccessful
3813c136 5514 * attempt to retrieve the shadow password. */
4ee39169 5515 RESTORE_ERRNO;
3813c136
JH		 5516 if (spwent && spwent->sp_pwdp)
5517 sv_setpv(sv, spwent->sp_pwdp);
5518 }
f1066039 5519# endif
e020c87d 5520# ifdef PWPASSWD
3813c136
JH		 5521 if (!SvPOK(sv)) /* Use the standard password, then. */
5522 sv_setpv(sv, pwent->pw_passwd);
e020c87d 5523# endif
3813c136 5524
3813c136
JH		 5525 /* passwd is tainted because user himself can diddle with it.
5526 * admittedly not much and in a very limited way, but nevertheless. */
2959b6e3 5527 SvTAINTED_on(sv);
6ee623d5 5528
dfff4baf
BF		 5529 sv_setuid(PUSHmortal, pwent->pw_uid);
5530 sv_setgid(PUSHmortal, pwent->pw_gid);
6ee623d5 5531
3813c136
JH		 5532 /* pw_change, pw_quota, and pw_age are mutually exclusive--
5533 * because of the poor interface of the Perl getpw*(),
5534 * not because there's some standard/convention saying so.
5535 * A better interface would have been to return a hash,
5536 * but we are accursed by our history, alas. --jhi. */
1883634f 5537# ifdef PWCHANGE
6e449a3a 5538 mPUSHi(pwent->pw_change);
8d698507 5539# elif defined(PWQUOTA)
6e449a3a 5540 mPUSHi(pwent->pw_quota);
8d698507 5541# elif defined(PWAGE)
6e449a3a 5542 mPUSHs(newSVpv(pwent->pw_age, 0));
8d698507 5543# else
7c58897d
NC		 5544 /* I think that you can never get this compiled, but just in case. */
5545 PUSHs(sv_mortalcopy(&PL_sv_no));
6ee623d5 5546# endif
6ee623d5 5547
3813c136
JH		 5548 /* pw_class and pw_comment are mutually exclusive--.
5549 * see the above note for pw_change, pw_quota, and pw_age. */
1883634f 5550# ifdef PWCLASS
6e449a3a 5551 mPUSHs(newSVpv(pwent->pw_class, 0));
8d698507 5552# elif defined(PWCOMMENT)
6e449a3a 5553 mPUSHs(newSVpv(pwent->pw_comment, 0));
8d698507 5554# else
7c58897d
NC		 5555 /* I think that you can never get this compiled, but just in case. */
5556 PUSHs(sv_mortalcopy(&PL_sv_no));
6ee623d5 5557# endif
6ee623d5 5558
1883634f 5559# ifdef PWGECOS
7c58897d
NC		 5560 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_gecos, 0)));
5561# else
c4c533cb 5562 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
1883634f 5563# endif
d2719217 5564 /* pw_gecos is tainted because user himself can diddle with it. */
fb73857a 5565 SvTAINTED_on(sv);
6ee623d5 5566
6e449a3a 5567 mPUSHs(newSVpv(pwent->pw_dir, 0));
6ee623d5 5568
7c58897d 5569 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_shell, 0)));
4602f195
JH		 5570 /* pw_shell is tainted because user himself can diddle with it. */
5571 SvTAINTED_on(sv);
6ee623d5 5572
1883634f 5573# ifdef PWEXPIRE
6e449a3a 5574 mPUSHi(pwent->pw_expire);
1883634f 5575# endif
a0d0e21e
LW		 5576 }
5577 RETURN;
5578#else
af51a00e 5579 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 5580#endif
5581}
5582
b1c05ba5
DM		 5583
5584/* also used for: pp_ggrgid() pp_ggrnam() */
5585
a0d0e21e
LW		 5586PP(pp_ggrent)
5587{
0994c4d0 5588#ifdef HAS_GROUP
20b7effb 5589 dSP;
6136c704
AL		 5590 const I32 which = PL_op->op_type;
5591 const struct group *grent;
a0d0e21e 5592
edd309b7 5593 if (which == OP_GGRNAM) {
0bcc34c2 5594 const char* const name = POPpbytex;
6136c704 5595 grent = (const struct group *)getgrnam(name);
edd309b7
JH		 5596 }
5597 else if (which == OP_GGRGID) {
ee17bffd
JH		 5598#if Gid_t_sign == 1
5599 const Gid_t gid = POPu;
5600#elif Gid_t_sign == -1
0bcc34c2 5601 const Gid_t gid = POPi;
ee17bffd
JH		 5602#else
5603# error "Unexpected Gid_t_sign"
5604#endif
6136c704 5605 grent = (const struct group *)getgrgid(gid);
edd309b7 5606 }
a0d0e21e 5607 else
0994c4d0 5608#ifdef HAS_GETGRENT
a0d0e21e 5609 grent = (struct group *)getgrent();
0994c4d0
JH		 5610#else
5611 DIE(aTHX_ PL_no_func, "getgrent");
5612#endif
a0d0e21e
LW		 5613
5614 EXTEND(SP, 4);
82334630 5615 if (GIMME_V != G_ARRAY) {
6136c704
AL		 5616 SV * const sv = sv_newmortal();
5617
5618 PUSHs(sv);
a0d0e21e
LW		 5619 if (grent) {
5620 if (which == OP_GGRNAM)
dfff4baf 5621 sv_setgid(sv, grent->gr_gid);
a0d0e21e
LW		 5622 else
5623 sv_setpv(sv, grent->gr_name);
5624 }
5625 RETURN;
5626 }
5627
5628 if (grent) {
6e449a3a 5629 mPUSHs(newSVpv(grent->gr_name, 0));
28e8609d 5630
28e8609d 5631#ifdef GRPASSWD
6e449a3a 5632 mPUSHs(newSVpv(grent->gr_passwd, 0));
7c58897d
NC		 5633#else
5634 PUSHs(sv_mortalcopy(&PL_sv_no));
28e8609d
JH		 5635#endif
5636
dfff4baf 5637 sv_setgid(PUSHmortal, grent->gr_gid);
28e8609d 5638
5b56e7c5 5639#if !(defined(_CRAYMPP) && defined(USE_REENTRANT_API))
3d7e8424
JH		 5640 /* In UNICOS/mk (_CRAYMPP) the multithreading
5641 * versions (getgrnam_r, getgrgid_r)
5642 * seem to return an illegal pointer
5643 * as the group members list, gr_mem.
5644 * getgrent() doesn't even have a _r version
5645 * but the gr_mem is poisonous anyway.
5646 * So yes, you cannot get the list of group
5647 * members if building multithreaded in UNICOS/mk. */
931e0695 5648 PUSHs(space_join_names_mortal(grent->gr_mem));
3d7e8424 5649#endif
a0d0e21e
LW		 5650 }
5651
5652 RETURN;
5653#else
af51a00e 5654 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 5655#endif
5656}
5657
a0d0e21e
LW		 5658PP(pp_getlogin)
5659{
a0d0e21e 5660#ifdef HAS_GETLOGIN
20b7effb 5661 dSP; dTARGET;
a0d0e21e
LW		 5662 char *tmps;
5663 EXTEND(SP, 1);
76e3520e 5664 if (!(tmps = PerlProc_getlogin()))
a0d0e21e 5665 RETPUSHUNDEF;
bee8aa44
NC		 5666 sv_setpv_mg(TARG, tmps);
5667 PUSHs(TARG);
a0d0e21e
LW		 5668 RETURN;
5669#else
cea2e8a9 5670 DIE(aTHX_ PL_no_func, "getlogin");
a0d0e21e
LW		 5671#endif
5672}
5673
5674/* Miscellaneous. */
5675
5676PP(pp_syscall)
5677{
d2719217 5678#ifdef HAS_SYSCALL
20b7effb 5679 dSP; dMARK; dORIGMARK; dTARGET;
eb578fdb 5680 I32 items = SP - MARK;
a0d0e21e 5681 unsigned long a[20];
eb578fdb 5682 I32 i = 0;
f9344c91 5683 IV retval = -1;
a0d0e21e 5684
284167a5 5685 if (TAINTING_get) {
a0d0e21e 5686 while (++MARK <= SP) {
bbce6d69 5687 if (SvTAINTED(*MARK)) {
5688 TAINT;
5689 break;
5690 }
a0d0e21e
LW		 5691 }
5692 MARK = ORIGMARK;
5693 TAINT_PROPER("syscall");
5694 }
5695
5696 /* This probably won't work on machines where sizeof(long) != sizeof(int)
5697 * or where sizeof(long) != sizeof(char*). But such machines will
5698 * not likely have syscall implemented either, so who cares?
5699 */
5700 while (++MARK <= SP) {
5701 if (SvNIOK(*MARK) || !i)
5702 a[i++] = SvIV(*MARK);
3280af22 5703 else if (*MARK == &PL_sv_undef)
748a9306 5704 a[i++] = 0;
301e8125 5705 else
8b6b16e7 5706 a[i++] = (unsigned long)SvPV_force_nolen(*MARK);
a0d0e21e
LW		 5707 if (i > 15)
5708 break;
5709 }
5710 switch (items) {
5711 default:
cea2e8a9 5712 DIE(aTHX_ "Too many args to syscall");
a0d0e21e 5713 case 0:
cea2e8a9 5714 DIE(aTHX_ "Too few args to syscall");
a0d0e21e
LW		 5715 case 1:
5716 retval = syscall(a[0]);
5717 break;
5718 case 2:
5719 retval = syscall(a[0],a[1]);
5720 break;
5721 case 3:
5722 retval = syscall(a[0],a[1],a[2]);
5723 break;
5724 case 4:
5725 retval = syscall(a[0],a[1],a[2],a[3]);
5726 break;
5727 case 5:
5728 retval = syscall(a[0],a[1],a[2],a[3],a[4]);
5729 break;
5730 case 6:
5731 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5]);
5732 break;
5733 case 7:
5734 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6]);
5735 break;
5736 case 8:
5737 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7]);
5738 break;
a0d0e21e
LW		 5739 }
5740 SP = ORIGMARK;
5741 PUSHi(retval);
5742 RETURN;
5743#else
cea2e8a9 5744 DIE(aTHX_ PL_no_func, "syscall");
a0d0e21e
LW		 5745#endif
5746}
5747
ff68c719 5748#ifdef FCNTL_EMULATE_FLOCK
301e8125 5749
ff68c719 5750/* XXX Emulate flock() with fcntl().
5751 What's really needed is a good file locking module.
5752*/
5753
cea2e8a9
GS		 5754static int
5755fcntl_emulate_flock(int fd, int operation)
ff68c719 5756{
fd9e8b45 5757 int res;
ff68c719 5758 struct flock flock;
301e8125 5759
ff68c719 5760 switch (operation & ~LOCK_NB) {
5761 case LOCK_SH:
5762 flock.l_type = F_RDLCK;
5763 break;
5764 case LOCK_EX:
5765 flock.l_type = F_WRLCK;
5766 break;
5767 case LOCK_UN:
5768 flock.l_type = F_UNLCK;
5769 break;
5770 default:
5771 errno = EINVAL;
5772 return -1;
5773 }
5774 flock.l_whence = SEEK_SET;
d9b3e12d 5775 flock.l_start = flock.l_len = (Off_t)0;
301e8125 5776
fd9e8b45
JD		 5777 res = fcntl(fd, (operation & LOCK_NB) ? F_SETLK : F_SETLKW, &flock);
5778 if (res == -1 && ((errno == EAGAIN) || (errno == EACCES)))
5779 errno = EWOULDBLOCK;
5780 return res;
ff68c719 5781}
5782
5783#endif /* FCNTL_EMULATE_FLOCK */
5784
5785#ifdef LOCKF_EMULATE_FLOCK
16d20bd9
AD		 5786
5787/* XXX Emulate flock() with lockf(). This is just to increase
5788 portability of scripts. The calls are not completely
5789 interchangeable. What's really needed is a good file
5790 locking module.
5791*/
5792
76c32331 5793/* The lockf() constants might have been defined in <unistd.h>.
5794 Unfortunately, <unistd.h> causes troubles on some mixed
5795 (BSD/POSIX) systems, such as SunOS 4.1.3.
16d20bd9
AD		 5796
5797 Further, the lockf() constants aren't POSIX, so they might not be
5798 visible if we're compiling with _POSIX_SOURCE defined. Thus, we'll
5799 just stick in the SVID values and be done with it. Sigh.
5800*/
5801
5802# ifndef F_ULOCK
5803# define F_ULOCK 0 /* Unlock a previously locked region */
5804# endif
5805# ifndef F_LOCK
5806# define F_LOCK 1 /* Lock a region for exclusive use */
5807# endif
5808# ifndef F_TLOCK
5809# define F_TLOCK 2 /* Test and lock a region for exclusive use */
5810# endif
5811# ifndef F_TEST
5812# define F_TEST 3 /* Test a region for other processes locks */
5813# endif
5814
cea2e8a9
GS		 5815static int
5816lockf_emulate_flock(int fd, int operation)
16d20bd9
AD		 5817{
5818 int i;
84902520 5819 Off_t pos;
4ee39169 5820 dSAVE_ERRNO;
84902520
TB		 5821
5822 /* flock locks entire file so for lockf we need to do the same */
6ad3d225 5823 pos = PerlLIO_lseek(fd, (Off_t)0, SEEK_CUR); /* get pos to restore later */
84902520 5824 if (pos > 0) /* is seekable and needs to be repositioned */
6ad3d225 5825 if (PerlLIO_lseek(fd, (Off_t)0, SEEK_SET) < 0)
08b714dd 5826 pos = -1; /* seek failed, so don't seek back afterwards */
4ee39169 5827 RESTORE_ERRNO;
84902520 5828
16d20bd9
AD		 5829 switch (operation) {
5830
5831 /* LOCK_SH - get a shared lock */
5832 case LOCK_SH:
5833 /* LOCK_EX - get an exclusive lock */
5834 case LOCK_EX:
5835 i = lockf (fd, F_LOCK, 0);
5836 break;
5837
5838 /* LOCK_SH|LOCK_NB - get a non-blocking shared lock */
5839 case LOCK_SH|LOCK_NB:
5840 /* LOCK_EX|LOCK_NB - get a non-blocking exclusive lock */
5841 case LOCK_EX|LOCK_NB:
5842 i = lockf (fd, F_TLOCK, 0);
5843 if (i == -1)
5844 if ((errno == EAGAIN) || (errno == EACCES))
5845 errno = EWOULDBLOCK;
5846 break;
5847
ff68c719 5848 /* LOCK_UN - unlock (non-blocking is a no-op) */
16d20bd9 5849 case LOCK_UN:
ff68c719 5850 case LOCK_UN|LOCK_NB:
16d20bd9
AD		 5851 i = lockf (fd, F_ULOCK, 0);
5852 break;
5853
5854 /* Default - can't decipher operation */
5855 default:
5856 i = -1;
5857 errno = EINVAL;
5858 break;
5859 }
84902520
TB		 5860
5861 if (pos > 0) /* need to restore position of the handle */
6ad3d225 5862 PerlLIO_lseek(fd, pos, SEEK_SET); /* ignore error here */
84902520 5863
16d20bd9
AD		 5864 return (i);
5865}
ff68c719 5866
5867#endif /* LOCKF_EMULATE_FLOCK */
241d1a3b
NC		 5868
5869/*
14d04a33 5870 * ex: set ts=8 sts=4 sw=4 et:
37442d52 5871 */
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