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change #25129 was overzealous in delaying the call to ckWARN
[perl5.git] / doio.c
CommitLineData
a0d0e21e 1/* doio.c
a687059c 2 *
4bb101f2 3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
770526c1 4 * 2000, 2001, 2002, 2003, 2004, 2005, by Larry Wall and others
a687059c 5 *
6e21c824
LW
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.
a687059c 8 *
a0d0e21e
LW
9 */
10
11/*
12 * "Far below them they saw the white waters pour into a foaming bowl, and
13 * then swirl darkly about a deep oval basin in the rocks, until they found
14 * their way out again through a narrow gate, and flowed away, fuming and
15 * chattering, into calmer and more level reaches."
a687059c
LW
16 */
17
166f8a29
DM
18/* This file contains functions that do the actual I/O on behalf of ops.
19 * For example, pp_print() calls the do_print() function in this file for
20 * each argument needing printing.
21 */
22
a687059c 23#include "EXTERN.h"
864dbfa3 24#define PERL_IN_DOIO_C
a687059c
LW
25#include "perl.h"
26
fe14fcc3 27#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
aec308ec 28#ifndef HAS_SEM
c2ab57d4 29#include <sys/ipc.h>
aec308ec 30#endif
fe14fcc3 31#ifdef HAS_MSG
c2ab57d4 32#include <sys/msg.h>
e5d73d77 33#endif
fe14fcc3 34#ifdef HAS_SHM
c2ab57d4 35#include <sys/shm.h>
a0d0e21e 36# ifndef HAS_SHMAT_PROTOTYPE
20ce7b12 37 extern Shmat_t shmat (int, char *, int);
a0d0e21e 38# endif
c2ab57d4 39#endif
e5d73d77 40#endif
c2ab57d4 41
663a0e37 42#ifdef I_UTIME
3730b96e 43# if defined(_MSC_VER) || defined(__MINGW32__)
3fe9a6f1
PP
44# include <sys/utime.h>
45# else
46# include <utime.h>
47# endif
663a0e37 48#endif
85aff577 49
85aff577
CS
50#ifdef O_EXCL
51# define OPEN_EXCL O_EXCL
52#else
53# define OPEN_EXCL 0
54#endif
a687059c 55
0c19750d
SP
56#define PERL_MODE_MAX 8
57#define PERL_FLAGS_MAX 10
58
76121258 59#include <signal.h>
76121258 60
a687059c 61bool
6170680b
IZ
62Perl_do_open(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
63 int rawmode, int rawperm, PerlIO *supplied_fp)
64{
a567e93b
NIS
65 return do_openn(gv, name, len, as_raw, rawmode, rawperm,
66 supplied_fp, (SV **) NULL, 0);
6170680b
IZ
67}
68
69bool
70Perl_do_open9(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
71 int rawmode, int rawperm, PerlIO *supplied_fp, SV *svs,
72 I32 num_svs)
a687059c 73{
890ce7af 74 PERL_UNUSED_ARG(num_svs);
a567e93b
NIS
75 return do_openn(gv, name, len, as_raw, rawmode, rawperm,
76 supplied_fp, &svs, 1);
77}
78
79bool
80Perl_do_openn(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
81 int rawmode, int rawperm, PerlIO *supplied_fp, SV **svp,
82 I32 num_svs)
83{
27da23d5 84 dVAR;
890ce7af 85 register IO * const io = GvIOn(gv);
760ac839
LW
86 PerlIO *saveifp = Nullfp;
87 PerlIO *saveofp = Nullfp;
ee518936 88 int savefd = -1;
9f37169a 89 char savetype = IoTYPE_CLOSED;
c07a80fd 90 int writing = 0;
760ac839 91 PerlIO *fp;
c07a80fd
PP
92 int fd;
93 int result;
3500f679 94 bool was_fdopen = FALSE;
16fe6d59 95 bool in_raw = 0, in_crlf = 0, out_raw = 0, out_crlf = 0;
b931b1d9 96 char *type = NULL;
0c19750d 97 char mode[PERL_MODE_MAX]; /* stdio file mode ("r\0", "rb\0", "r+b\0" etc.) */
ee518936 98 SV *namesv;
a687059c 99
b931b1d9 100 Zero(mode,sizeof(mode),char);
3280af22 101 PL_forkprocess = 1; /* assume true if no fork */
c07a80fd 102
b931b1d9 103 /* Collect default raw/crlf info from the op */
16fe6d59 104 if (PL_op && PL_op->op_type == OP_OPEN) {
c2be40b1 105 /* set up IO layers */
b464bac0 106 const U8 flags = PL_op->op_private;
16fe6d59
GS
107 in_raw = (flags & OPpOPEN_IN_RAW);
108 in_crlf = (flags & OPpOPEN_IN_CRLF);
109 out_raw = (flags & OPpOPEN_OUT_RAW);
110 out_crlf = (flags & OPpOPEN_OUT_CRLF);
111 }
112
b931b1d9 113 /* If currently open - close before we re-open */
a0d0e21e 114 if (IoIFP(io)) {
760ac839 115 fd = PerlIO_fileno(IoIFP(io));
ee518936
NIS
116 if (IoTYPE(io) == IoTYPE_STD) {
117 /* This is a clone of one of STD* handles */
c2ab57d4 118 result = 0;
ee518936
NIS
119 }
120 else if (fd >= 0 && fd <= PL_maxsysfd) {
121 /* This is one of the original STD* handles */
122 saveifp = IoIFP(io);
123 saveofp = IoOFP(io);
8990e307 124 savetype = IoTYPE(io);
ee518936
NIS
125 savefd = fd;
126 result = 0;
6e21c824 127 }
50952442 128 else if (IoTYPE(io) == IoTYPE_PIPE)
3028581b 129 result = PerlProc_pclose(IoIFP(io));
8990e307
LW
130 else if (IoIFP(io) != IoOFP(io)) {
131 if (IoOFP(io)) {
760ac839 132 result = PerlIO_close(IoOFP(io));
6170680b 133 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
c2ab57d4
LW
134 }
135 else
760ac839 136 result = PerlIO_close(IoIFP(io));
a687059c 137 }
a687059c 138 else
760ac839 139 result = PerlIO_close(IoIFP(io));
ee518936
NIS
140 if (result == EOF && fd > PL_maxsysfd) {
141 /* Why is this not Perl_warn*() call ? */
bf49b057 142 PerlIO_printf(Perl_error_log,
6170680b
IZ
143 "Warning: unable to close filehandle %s properly.\n",
144 GvENAME(gv));
ee518936 145 }
8990e307 146 IoOFP(io) = IoIFP(io) = Nullfp;
a687059c 147 }
c07a80fd
PP
148
149 if (as_raw) {
b931b1d9 150 /* sysopen style args, i.e. integer mode and permissions */
ee518936 151 STRLEN ix = 0;
e1ec3a88 152 const int appendtrunc =
3dccc55c 153 0
d1da7611 154#ifdef O_APPEND /* Not fully portable. */
3dccc55c 155 |O_APPEND
d1da7611
JH
156#endif
157#ifdef O_TRUNC /* Not fully portable. */
3dccc55c 158 |O_TRUNC
d1da7611 159#endif
3dccc55c 160 ;
6867be6d 161 const int modifyingmode = O_WRONLY|O_RDWR|O_CREAT|appendtrunc;
3dccc55c
JH
162 int ismodifying;
163
164 if (num_svs != 0) {
165 Perl_croak(aTHX_ "panic: sysopen with multiple args");
166 }
167 /* It's not always
168
169 O_RDONLY 0
170 O_WRONLY 1
171 O_RDWR 2
172
173 It might be (in OS/390 and Mac OS Classic it is)
174
175 O_WRONLY 1
176 O_RDONLY 2
177 O_RDWR 3
178
179 This means that simple & with O_RDWR would look
180 like O_RDONLY is present. Therefore we have to
181 be more careful.
182 */
183 if ((ismodifying = (rawmode & modifyingmode))) {
184 if ((ismodifying & O_WRONLY) == O_WRONLY ||
185 (ismodifying & O_RDWR) == O_RDWR ||
186 (ismodifying & (O_CREAT|appendtrunc)))
187 TAINT_PROPER("sysopen");
188 }
3b6c1aba 189 mode[ix++] = IoTYPE_NUMERIC; /* Marker to openn to use numeric "sysopen" */
b931b1d9 190
09458382 191#if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE)
b94c04ac 192 rawmode |= O_LARGEFILE; /* Transparently largefiley. */
5ff3f7a4
GS
193#endif
194
06c7082d 195 IoTYPE(io) = PerlIO_intmode2str(rawmode, &mode[ix], &writing);
ee518936
NIS
196
197 namesv = sv_2mortal(newSVpvn(name,strlen(name)));
198 num_svs = 1;
199 svp = &namesv;
1141d9f8 200 type = Nullch;
b94c04ac 201 fp = PerlIO_openn(aTHX_ type, mode, -1, rawmode, rawperm, NULL, num_svs, svp);
a687059c 202 }
c07a80fd 203 else {
b931b1d9 204 /* Regular (non-sys) open */
faecd977 205 char *oname = name;
faecd977 206 STRLEN olen = len;
b931b1d9
NIS
207 char *tend;
208 int dodup = 0;
ecdeb87c 209 PerlIO *that_fp = NULL;
c07a80fd 210
faecd977 211 type = savepvn(name, len);
b931b1d9 212 tend = type+len;
faecd977 213 SAVEFREEPV(type);
eb649f83
AMS
214
215 /* Lose leading and trailing white space */
eb649f83
AMS
216 for (; isSPACE(*type); type++) ;
217 while (tend > type && isSPACE(tend[-1]))
218 *--tend = '\0';
219
6170680b 220 if (num_svs) {
c2be40b1 221 /* New style explicit name, type is just mode and layer info */
9a869a14
RGS
222#ifdef USE_STDIO
223 if (SvROK(*svp) && !strchr(name,'&')) {
224 if (ckWARN(WARN_IO))
225 Perl_warner(aTHX_ packWARN(WARN_IO),
226 "Can't open a reference");
93189314 227 SETERRNO(EINVAL, LIB_INVARG);
9a869a14
RGS
228 goto say_false;
229 }
230#endif /* USE_STDIO */
705bfa5f 231 name = SvOK(*svp) ? savesvpv (*svp) : savepvn ("", 0);
faecd977 232 SAVEFREEPV(name);
6170680b 233 }
faecd977 234 else {
faecd977 235 name = type;
b931b1d9 236 len = tend-type;
faecd977 237 }
6170680b 238 IoTYPE(io) = *type;
516a5887 239 if ((*type == IoTYPE_RDWR) && /* scary */
01a8ea99 240 (*(type+1) == IoTYPE_RDONLY || *(type+1) == IoTYPE_WRONLY) &&
516a5887 241 ((!num_svs || (tend > type+1 && tend[-1] != IoTYPE_PIPE)))) {
c2be40b1 242 TAINT_PROPER("open");
6170680b 243 mode[1] = *type++;
c07a80fd 244 writing = 1;
a687059c 245 }
c07a80fd 246
9f37169a 247 if (*type == IoTYPE_PIPE) {
b931b1d9
NIS
248 if (num_svs) {
249 if (type[1] != IoTYPE_STD) {
c2be40b1 250 unknown_open_mode:
b931b1d9
NIS
251 Perl_croak(aTHX_ "Unknown open() mode '%.*s'", (int)olen, oname);
252 }
253 type++;
6170680b 254 }
b931b1d9 255 for (type++; isSPACE(*type); type++) ;
faecd977 256 if (!num_svs) {
6170680b 257 name = type;
b931b1d9 258 len = tend-type;
faecd977 259 }
4a7d1889
NIS
260 if (*name == '\0') {
261 /* command is missing 19990114 */
06eaf0bc 262 if (ckWARN(WARN_PIPE))
9014280d 263 Perl_warner(aTHX_ packWARN(WARN_PIPE), "Missing command in piped open");
06eaf0bc
GS
264 errno = EPIPE;
265 goto say_false;
266 }
770526c1 267 if ((*name == '-' && name[1] == '\0') || num_svs)
c07a80fd
PP
268 TAINT_ENV();
269 TAINT_PROPER("piped open");
b931b1d9 270 if (!num_svs && name[len-1] == '|') {
faecd977 271 name[--len] = '\0' ;
599cee73 272 if (ckWARN(WARN_PIPE))
9014280d 273 Perl_warner(aTHX_ packWARN(WARN_PIPE), "Can't open bidirectional pipe");
7b8d334a 274 }
a1d180c4 275 mode[0] = 'w';
c07a80fd 276 writing = 1;
0c19750d
SP
277#ifdef HAS_STRLCAT
278 if (out_raw)
279 strlcat(mode, "b", PERL_MODE_MAX);
280 else if (out_crlf)
281 strlcat(mode, "t", PERL_MODE_MAX);
282#else
a1d180c4
NIS
283 if (out_raw)
284 strcat(mode, "b");
285 else if (out_crlf)
286 strcat(mode, "t");
0c19750d 287#endif
4a7d1889
NIS
288 if (num_svs > 1) {
289 fp = PerlProc_popen_list(mode, num_svs, svp);
290 }
291 else {
292 fp = PerlProc_popen(name,mode);
293 }
1771866f
NIS
294 if (num_svs) {
295 if (*type) {
296 if (PerlIO_apply_layers(aTHX_ fp, mode, type) != 0) {
297 goto say_false;
298 }
299 }
300 }
c2be40b1 301 } /* IoTYPE_PIPE */
9f37169a 302 else if (*type == IoTYPE_WRONLY) {
c07a80fd 303 TAINT_PROPER("open");
6170680b 304 type++;
9f37169a
JH
305 if (*type == IoTYPE_WRONLY) {
306 /* Two IoTYPE_WRONLYs in a row make for an IoTYPE_APPEND. */
50952442 307 mode[0] = IoTYPE(io) = IoTYPE_APPEND;
6170680b 308 type++;
a0d0e21e 309 }
ee518936 310 else {
c07a80fd 311 mode[0] = 'w';
ee518936 312 }
c07a80fd
PP
313 writing = 1;
314
0c19750d
SP
315#ifdef HAS_STRLCAT
316 if (out_raw)
317 strlcat(mode, "b", PERL_MODE_MAX);
318 else if (out_crlf)
319 strlcat(mode, "t", PERL_MODE_MAX);
320#else
16fe6d59
GS
321 if (out_raw)
322 strcat(mode, "b");
323 else if (out_crlf)
324 strcat(mode, "t");
0c19750d 325#endif
6170680b 326 if (*type == '&') {
c07a80fd 327 duplicity:
ecdeb87c 328 dodup = PERLIO_DUP_FD;
e620cd72
NIS
329 type++;
330 if (*type == '=') {
c07a80fd 331 dodup = 0;
e620cd72 332 type++;
4a7d1889 333 }
ee518936 334 if (!num_svs && !*type && supplied_fp) {
4a7d1889 335 /* "<+&" etc. is used by typemaps */
c07a80fd 336 fp = supplied_fp;
ee518936 337 }
a0d0e21e 338 else {
e620cd72
NIS
339 if (num_svs > 1) {
340 Perl_croak(aTHX_ "More than one argument to '%c&' open",IoTYPE(io));
341 }
54edfe98 342 for (; isSPACE(*type); type++) ;
1771866f 343 if (num_svs && (SvIOK(*svp) || (SvPOK(*svp) && looks_like_number(*svp)))) {
e620cd72 344 fd = SvUV(*svp);
24a7a40d 345 num_svs = 0;
ee518936 346 }
e620cd72 347 else if (isDIGIT(*type)) {
e620cd72
NIS
348 fd = atoi(type);
349 }
c07a80fd 350 else {
e1ec3a88 351 const IO* thatio;
e620cd72
NIS
352 if (num_svs) {
353 thatio = sv_2io(*svp);
354 }
355 else {
356 GV *thatgv;
e620cd72
NIS
357 thatgv = gv_fetchpv(type,FALSE,SVt_PVIO);
358 thatio = GvIO(thatgv);
359 }
c07a80fd 360 if (!thatio) {
6e21c824 361#ifdef EINVAL
93189314 362 SETERRNO(EINVAL,SS_IVCHAN);
6e21c824 363#endif
c07a80fd
PP
364 goto say_false;
365 }
f4e789af 366 if ((that_fp = IoIFP(thatio))) {
7211d486
JH
367 /* Flush stdio buffer before dup. --mjd
368 * Unfortunately SEEK_CURing 0 seems to
369 * be optimized away on most platforms;
370 * only Solaris and Linux seem to flush
371 * on that. --jhi */
2c534a3f
NC
372#ifdef USE_SFIO
373 /* sfio fails to clear error on next
374 sfwrite, contrary to documentation.
375 -- Nick Clark */
ecdeb87c
NIS
376 if (PerlIO_seek(that_fp, 0, SEEK_CUR) == -1)
377 PerlIO_clearerr(that_fp);
2c534a3f 378#endif
7211d486
JH
379 /* On the other hand, do all platforms
380 * take gracefully to flushing a read-only
381 * filehandle? Perhaps we should do
382 * fsetpos(src)+fgetpos(dst)? --nik */
ecdeb87c
NIS
383 PerlIO_flush(that_fp);
384 fd = PerlIO_fileno(that_fp);
0759c907
JH
385 /* When dup()ing STDIN, STDOUT or STDERR
386 * explicitly set appropriate access mode */
f4e789af
NC
387 if (that_fp == PerlIO_stdout()
388 || that_fp == PerlIO_stderr())
0759c907 389 IoTYPE(io) = IoTYPE_WRONLY;
f4e789af 390 else if (that_fp == PerlIO_stdin())
0759c907
JH
391 IoTYPE(io) = IoTYPE_RDONLY;
392 /* When dup()ing a socket, say result is
393 * one as well */
394 else if (IoTYPE(thatio) == IoTYPE_SOCKET)
50952442 395 IoTYPE(io) = IoTYPE_SOCKET;
c07a80fd
PP
396 }
397 else
398 fd = -1;
a0d0e21e 399 }
ee518936 400 if (!num_svs)
1141d9f8 401 type = Nullch;
ecdeb87c
NIS
402 if (that_fp) {
403 fp = PerlIO_fdupopen(aTHX_ that_fp, NULL, dodup);
404 }
405 else {
c07a80fd 406 if (dodup)
ecdeb87c
NIS
407 fd = PerlLIO_dup(fd);
408 else
409 was_fdopen = TRUE;
410 if (!(fp = PerlIO_openn(aTHX_ type,mode,fd,0,0,NULL,num_svs,svp))) {
411 if (dodup)
412 PerlLIO_close(fd);
413 }
faecd977 414 }
c07a80fd 415 }
ee518936 416 } /* & */
c07a80fd 417 else {
6170680b 418 for (; isSPACE(*type); type++) ;
b931b1d9 419 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
b931b1d9 420 type++;
760ac839 421 fp = PerlIO_stdout();
50952442 422 IoTYPE(io) = IoTYPE_STD;
7cf31beb
NIS
423 if (num_svs > 1) {
424 Perl_croak(aTHX_ "More than one argument to '>%c' open",IoTYPE_STD);
425 }
c07a80fd
PP
426 }
427 else {
ee518936
NIS
428 if (!num_svs) {
429 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
430 num_svs = 1;
431 svp = &namesv;
1141d9f8 432 type = Nullch;
ee518936 433 }
6e60e805 434 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
c07a80fd 435 }
ee518936 436 } /* !& */
7e72d509
JH
437 if (!fp && type && *type && *type != ':' && !isIDFIRST(*type))
438 goto unknown_open_mode;
c2be40b1 439 } /* IoTYPE_WRONLY */
9f37169a 440 else if (*type == IoTYPE_RDONLY) {
6170680b 441 for (type++; isSPACE(*type); type++) ;
bf38876a 442 mode[0] = 'r';
0c19750d
SP
443#ifdef HAS_STRLCAT
444 if (in_raw)
445 strlcat(mode, "b", PERL_MODE_MAX);
446 else if (in_crlf)
447 strlcat(mode, "t", PERL_MODE_MAX);
448#else
16fe6d59
GS
449 if (in_raw)
450 strcat(mode, "b");
451 else if (in_crlf)
452 strcat(mode, "t");
0c19750d 453#endif
6170680b 454 if (*type == '&') {
bf38876a 455 goto duplicity;
6170680b 456 }
b931b1d9 457 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
b931b1d9 458 type++;
760ac839 459 fp = PerlIO_stdin();
50952442 460 IoTYPE(io) = IoTYPE_STD;
7cf31beb
NIS
461 if (num_svs > 1) {
462 Perl_croak(aTHX_ "More than one argument to '<%c' open",IoTYPE_STD);
463 }
a687059c 464 }
ee518936
NIS
465 else {
466 if (!num_svs) {
467 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
468 num_svs = 1;
469 svp = &namesv;
1141d9f8 470 type = Nullch;
ee518936 471 }
6e60e805 472 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
ee518936 473 }
7e72d509
JH
474 if (!fp && type && *type && *type != ':' && !isIDFIRST(*type))
475 goto unknown_open_mode;
c2be40b1
JH
476 } /* IoTYPE_RDONLY */
477 else if ((num_svs && /* '-|...' or '...|' */
478 type[0] == IoTYPE_STD && type[1] == IoTYPE_PIPE) ||
b931b1d9 479 (!num_svs && tend > type+1 && tend[-1] == IoTYPE_PIPE)) {
6170680b 480 if (num_svs) {
b931b1d9 481 type += 2; /* skip over '-|' */
6170680b
IZ
482 }
483 else {
b931b1d9
NIS
484 *--tend = '\0';
485 while (tend > type && isSPACE(tend[-1]))
486 *--tend = '\0';
a6e20a40
AL
487 for (; isSPACE(*type); type++)
488 ;
6170680b 489 name = type;
b931b1d9 490 len = tend-type;
6170680b 491 }
4a7d1889
NIS
492 if (*name == '\0') {
493 /* command is missing 19990114 */
06eaf0bc 494 if (ckWARN(WARN_PIPE))
9014280d 495 Perl_warner(aTHX_ packWARN(WARN_PIPE), "Missing command in piped open");
06eaf0bc
GS
496 errno = EPIPE;
497 goto say_false;
498 }
770526c1 499 if (!(*name == '-' && name[1] == '\0') || num_svs)
79072805
LW
500 TAINT_ENV();
501 TAINT_PROPER("piped open");
a1d180c4 502 mode[0] = 'r';
0c19750d
SP
503
504#ifdef HAS_STRLCAT
505 if (in_raw)
506 strlcat(mode, "b", PERL_MODE_MAX);
507 else if (in_crlf)
508 strlcat(mode, "t", PERL_MODE_MAX);
509#else
a1d180c4
NIS
510 if (in_raw)
511 strcat(mode, "b");
512 else if (in_crlf)
513 strcat(mode, "t");
0c19750d
SP
514#endif
515
4a7d1889
NIS
516 if (num_svs > 1) {
517 fp = PerlProc_popen_list(mode,num_svs,svp);
518 }
e620cd72 519 else {
4a7d1889
NIS
520 fp = PerlProc_popen(name,mode);
521 }
50952442 522 IoTYPE(io) = IoTYPE_PIPE;
1771866f
NIS
523 if (num_svs) {
524 for (; isSPACE(*type); type++) ;
525 if (*type) {
526 if (PerlIO_apply_layers(aTHX_ fp, mode, type) != 0) {
527 goto say_false;
528 }
529 }
530 }
a687059c 531 }
c2be40b1 532 else { /* layer(Args) */
6170680b 533 if (num_svs)
c2be40b1 534 goto unknown_open_mode;
6170680b 535 name = type;
50952442 536 IoTYPE(io) = IoTYPE_RDONLY;
a6e20a40
AL
537 for (; isSPACE(*name); name++)
538 ;
88b61e10 539 mode[0] = 'r';
0c19750d
SP
540
541#ifdef HAS_STRLCAT
542 if (in_raw)
543 strlcat(mode, "b", PERL_MODE_MAX);
544 else if (in_crlf)
545 strlcat(mode, "t", PERL_MODE_MAX);
546#else
88b61e10
NIS
547 if (in_raw)
548 strcat(mode, "b");
549 else if (in_crlf)
550 strcat(mode, "t");
0c19750d
SP
551#endif
552
770526c1 553 if (*name == '-' && name[1] == '\0') {
760ac839 554 fp = PerlIO_stdin();
50952442 555 IoTYPE(io) = IoTYPE_STD;
a687059c 556 }
16fe6d59 557 else {
ee518936
NIS
558 if (!num_svs) {
559 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
560 num_svs = 1;
561 svp = &namesv;
1141d9f8 562 type = Nullch;
ee518936 563 }
6e60e805 564 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
16fe6d59 565 }
a687059c
LW
566 }
567 }
bee1dbe2 568 if (!fp) {
ce44635a
DM
569 if (IoTYPE(io) == IoTYPE_RDONLY && ckWARN(WARN_NEWLINE)
570 && strchr(name, '\n')
571
041457d9 572 )
9014280d 573 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
6e21c824 574 goto say_false;
bee1dbe2 575 }
a00b5bd3
NIS
576
577 if (ckWARN(WARN_IO)) {
578 if ((IoTYPE(io) == IoTYPE_RDONLY) &&
579 (fp == PerlIO_stdout() || fp == PerlIO_stderr())) {
9014280d 580 Perl_warner(aTHX_ packWARN(WARN_IO),
97828cef
RGS
581 "Filehandle STD%s reopened as %s only for input",
582 ((fp == PerlIO_stdout()) ? "OUT" : "ERR"),
583 GvENAME(gv));
a00b5bd3 584 }
ee518936 585 else if ((IoTYPE(io) == IoTYPE_WRONLY) && fp == PerlIO_stdin()) {
9014280d 586 Perl_warner(aTHX_ packWARN(WARN_IO),
97828cef
RGS
587 "Filehandle STDIN reopened as %s only for output",
588 GvENAME(gv));
a00b5bd3
NIS
589 }
590 }
591
e99cca91 592 fd = PerlIO_fileno(fp);
e934609f
JH
593 /* If there is no fd (e.g. PerlIO::scalar) assume it isn't a
594 * socket - this covers PerlIO::scalar - otherwise unless we "know" the
e99cca91
NIS
595 * type probe for socket-ness.
596 */
597 if (IoTYPE(io) && IoTYPE(io) != IoTYPE_PIPE && IoTYPE(io) != IoTYPE_STD && fd >= 0) {
598 if (PerlLIO_fstat(fd,&PL_statbuf) < 0) {
599 /* If PerlIO claims to have fd we had better be able to fstat() it. */
600 (void) PerlIO_close(fp);
6e21c824 601 goto say_false;
a687059c 602 }
7114a2d2 603#ifndef PERL_MICRO
3280af22 604 if (S_ISSOCK(PL_statbuf.st_mode))
50952442 605 IoTYPE(io) = IoTYPE_SOCKET; /* in case a socket was passed in to us */
99b89507
LW
606#ifdef HAS_SOCKET
607 else if (
c623bd54 608#ifdef S_IFMT
3280af22 609 !(PL_statbuf.st_mode & S_IFMT)
99b89507 610#else
b28d0864 611 !PL_statbuf.st_mode
99b89507 612#endif
0759c907
JH
613 && IoTYPE(io) != IoTYPE_WRONLY /* Dups of STD* filehandles already have */
614 && IoTYPE(io) != IoTYPE_RDONLY /* type so they aren't marked as sockets */
615 ) { /* on OS's that return 0 on fstat()ed pipe */
e99cca91
NIS
616 char tmpbuf[256];
617 Sock_size_t buflen = sizeof tmpbuf;
618 if (PerlSock_getsockname(fd, (struct sockaddr *)tmpbuf, &buflen) >= 0
619 || errno != ENOTSOCK)
620 IoTYPE(io) = IoTYPE_SOCKET; /* some OS's return 0 on fstat()ed socket */
621 /* but some return 0 for streams too, sigh */
99b89507 622 }
e99cca91 623#endif /* HAS_SOCKET */
7114a2d2 624#endif /* !PERL_MICRO */
a687059c 625 }
e99cca91
NIS
626
627 /* Eeek - FIXME !!!
628 * If this is a standard handle we discard all the layer stuff
629 * and just dup the fd into whatever was on the handle before !
630 */
631
6e21c824 632 if (saveifp) { /* must use old fp? */
f5b9d040 633 /* If fd is less that PL_maxsysfd i.e. STDIN..STDERR
24c23ab4 634 then dup the new fileno down
f5b9d040 635 */
6e21c824 636 if (saveofp) {
f5b9d040 637 PerlIO_flush(saveofp); /* emulate PerlIO_close() */
6e21c824 638 if (saveofp != saveifp) { /* was a socket? */
760ac839 639 PerlIO_close(saveofp);
6e21c824
LW
640 }
641 }
6e60e805 642 if (savefd != fd) {
e934609f 643 /* Still a small can-of-worms here if (say) PerlIO::scalar
ecdeb87c
NIS
644 is assigned to (say) STDOUT - for now let dup2() fail
645 and provide the error
646 */
bd4a5668
NIS
647 if (PerlLIO_dup2(fd, savefd) < 0) {
648 (void)PerlIO_close(fp);
649 goto say_false;
650 }
d082dcd6 651#ifdef VMS
6e60e805 652 if (savefd != PerlIO_fileno(PerlIO_stdin())) {
d0e2cf63
AMS
653 char newname[FILENAME_MAX+1];
654 if (PerlIO_getname(fp, newname)) {
655 if (fd == PerlIO_fileno(PerlIO_stdout()))
656 Perl_vmssetuserlnm(aTHX_ "SYS$OUTPUT", newname);
657 if (fd == PerlIO_fileno(PerlIO_stderr()))
658 Perl_vmssetuserlnm(aTHX_ "SYS$ERROR", newname);
659 }
d082dcd6
JH
660 }
661#endif
d0e2cf63
AMS
662
663#if !defined(WIN32)
664 /* PL_fdpid isn't used on Windows, so avoid this useless work.
665 * XXX Probably the same for a lot of other places. */
666 {
667 Pid_t pid;
668 SV *sv;
669
670 LOCK_FDPID_MUTEX;
671 sv = *av_fetch(PL_fdpid,fd,TRUE);
862a34c6 672 SvUPGRADE(sv, SVt_IV);
d0e2cf63 673 pid = SvIVX(sv);
45977657 674 SvIV_set(sv, 0);
d0e2cf63 675 sv = *av_fetch(PL_fdpid,savefd,TRUE);
862a34c6 676 SvUPGRADE(sv, SVt_IV);
45977657 677 SvIV_set(sv, pid);
d0e2cf63
AMS
678 UNLOCK_FDPID_MUTEX;
679 }
680#endif
681
e212fc47
AMS
682 if (was_fdopen) {
683 /* need to close fp without closing underlying fd */
684 int ofd = PerlIO_fileno(fp);
685 int dupfd = PerlLIO_dup(ofd);
03e631df
JH
686#if defined(HAS_FCNTL) && defined(F_SETFD)
687 /* Assume if we have F_SETFD we have F_GETFD */
688 int coe = fcntl(ofd,F_GETFD);
689#endif
e212fc47
AMS
690 PerlIO_close(fp);
691 PerlLIO_dup2(dupfd,ofd);
03e631df
JH
692#if defined(HAS_FCNTL) && defined(F_SETFD)
693 /* The dup trick has lost close-on-exec on ofd */
694 fcntl(ofd,F_SETFD, coe);
695#endif
e212fc47 696 PerlLIO_close(dupfd);
ecdeb87c 697 }
e212fc47
AMS
698 else
699 PerlIO_close(fp);
6e21c824
LW
700 }
701 fp = saveifp;
760ac839 702 PerlIO_clearerr(fp);
e99cca91 703 fd = PerlIO_fileno(fp);
6e21c824 704 }
a0d0e21e 705#if defined(HAS_FCNTL) && defined(F_SETFD)
e99cca91 706 if (fd >= 0) {
a8710ca1 707 int save_errno = errno;
a8710ca1
GS
708 fcntl(fd,F_SETFD,fd > PL_maxsysfd); /* can change errno */
709 errno = save_errno;
710 }
1462b684 711#endif
8990e307 712 IoIFP(io) = fp;
b931b1d9 713
684bef36 714 IoFLAGS(io) &= ~IOf_NOLINE;
bf38876a 715 if (writing) {
50952442 716 if (IoTYPE(io) == IoTYPE_SOCKET
e99cca91 717 || (IoTYPE(io) == IoTYPE_WRONLY && fd >= 0 && S_ISCHR(PL_statbuf.st_mode)) ) {
a33cf58c 718 char *s = mode;
3b6c1aba
JH
719 if (*s == IoTYPE_IMPLICIT || *s == IoTYPE_NUMERIC)
720 s++;
a33cf58c 721 *s = 'w';
1feb1812 722 if (!(IoOFP(io) = PerlIO_openn(aTHX_ type,s,fd,0,0,NULL,0,svp))) {
760ac839 723 PerlIO_close(fp);
8990e307 724 IoIFP(io) = Nullfp;
6e21c824 725 goto say_false;
fe14fcc3 726 }
1462b684
LW
727 }
728 else
8990e307 729 IoOFP(io) = fp;
bf38876a 730 }
a687059c 731 return TRUE;
6e21c824
LW
732
733say_false:
8990e307
LW
734 IoIFP(io) = saveifp;
735 IoOFP(io) = saveofp;
736 IoTYPE(io) = savetype;
6e21c824 737 return FALSE;
a687059c
LW
738}
739
760ac839 740PerlIO *
864dbfa3 741Perl_nextargv(pTHX_ register GV *gv)
a687059c 742{
79072805 743 register SV *sv;
99b89507 744#ifndef FLEXFILENAMES
c623bd54
LW
745 int filedev;
746 int fileino;
99b89507 747#endif
761237fe
JB
748 Uid_t fileuid;
749 Gid_t filegid;
18708f5a 750 IO *io = GvIOp(gv);
fe14fcc3 751
3280af22
NIS
752 if (!PL_argvoutgv)
753 PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
18708f5a
GS
754 if (io && (IoFLAGS(io) & IOf_ARGV) && (IoFLAGS(io) & IOf_START)) {
755 IoFLAGS(io) &= ~IOf_START;
7a1c5554
GS
756 if (PL_inplace) {
757 if (!PL_argvout_stack)
758 PL_argvout_stack = newAV();
18708f5a 759 av_push(PL_argvout_stack, SvREFCNT_inc(PL_defoutgv));
7a1c5554 760 }
18708f5a 761 }
3280af22
NIS
762 if (PL_filemode & (S_ISUID|S_ISGID)) {
763 PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
fe14fcc3 764#ifdef HAS_FCHMOD
c797f2d8
DM
765 if (PL_lastfd != -1)
766 (void)fchmod(PL_lastfd,PL_filemode);
fe14fcc3 767#else
b28d0864 768 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
fe14fcc3
LW
769#endif
770 }
c797f2d8 771 PL_lastfd = -1;
3280af22 772 PL_filemode = 0;
5c501b37
JH
773 if (!GvAV(gv))
774 return Nullfp;
79072805 775 while (av_len(GvAV(gv)) >= 0) {
85aff577 776 STRLEN oldlen;
79072805 777 sv = av_shift(GvAV(gv));
8990e307 778 SAVEFREESV(sv);
e203899d 779 sv_setsv(GvSVn(gv),sv);
79072805 780 SvSETMAGIC(GvSV(gv));
3280af22 781 PL_oldname = SvPVx(GvSV(gv), oldlen);
9d116dd7 782 if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) {
3280af22 783 if (PL_inplace) {
79072805 784 TAINT_PROPER("inplace open");
3280af22 785 if (oldlen == 1 && *PL_oldname == '-') {
4633a7c4 786 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
a0d0e21e 787 return IoIFP(GvIOp(gv));
c623bd54 788 }
99b89507 789#ifndef FLEXFILENAMES
b28d0864
NIS
790 filedev = PL_statbuf.st_dev;
791 fileino = PL_statbuf.st_ino;
99b89507 792#endif
3280af22
NIS
793 PL_filemode = PL_statbuf.st_mode;
794 fileuid = PL_statbuf.st_uid;
795 filegid = PL_statbuf.st_gid;
796 if (!S_ISREG(PL_filemode)) {
0453d815 797 if (ckWARN_d(WARN_INPLACE))
9014280d 798 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
0453d815
PM
799 "Can't do inplace edit: %s is not a regular file",
800 PL_oldname );
79072805 801 do_close(gv,FALSE);
c623bd54
LW
802 continue;
803 }
3280af22
NIS
804 if (*PL_inplace) {
805 char *star = strchr(PL_inplace, '*');
2d259d92 806 if (star) {
3280af22 807 char *begin = PL_inplace;
2d259d92
CK
808 sv_setpvn(sv, "", 0);
809 do {
810 sv_catpvn(sv, begin, star - begin);
3280af22 811 sv_catpvn(sv, PL_oldname, oldlen);
2d259d92
CK
812 begin = ++star;
813 } while ((star = strchr(begin, '*')));
3d66d7bb
GS
814 if (*begin)
815 sv_catpv(sv,begin);
2d259d92
CK
816 }
817 else {
3280af22 818 sv_catpv(sv,PL_inplace);
2d259d92 819 }
c623bd54 820#ifndef FLEXFILENAMES
95a20fc0 821 if ((PerlLIO_stat(SvPVX_const(sv),&PL_statbuf) >= 0
5f74f29c
JH
822 && PL_statbuf.st_dev == filedev
823 && PL_statbuf.st_ino == fileino)
39e571d4 824#ifdef DJGPP
5f74f29c 825 || ((_djstat_fail_bits & _STFAIL_TRUENAME)!=0)
39e571d4 826#endif
f248d071
GS
827 )
828 {
829 if (ckWARN_d(WARN_INPLACE))
9014280d 830 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
35c1215d
NC
831 "Can't do inplace edit: %"SVf" would not be unique",
832 sv);
79072805 833 do_close(gv,FALSE);
c623bd54
LW
834 continue;
835 }
836#endif
fe14fcc3 837#ifdef HAS_RENAME
2585f9a3 838#if !defined(DOSISH) && !defined(__CYGWIN__) && !defined(EPOC)
95a20fc0 839 if (PerlLIO_rename(PL_oldname,SvPVX_const(sv)) < 0) {
0453d815 840 if (ckWARN_d(WARN_INPLACE))
9014280d 841 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
35c1215d
NC
842 "Can't rename %s to %"SVf": %s, skipping file",
843 PL_oldname, sv, Strerror(errno) );
79072805 844 do_close(gv,FALSE);
c623bd54
LW
845 continue;
846 }
a687059c 847#else
79072805 848 do_close(gv,FALSE);
95a20fc0
SP
849 (void)PerlLIO_unlink(SvPVX_const(sv));
850 (void)PerlLIO_rename(PL_oldname,SvPVX_const(sv));
93524f2b
NC
851 do_open(gv,(char*)SvPVX_const(sv),SvCUR(sv),PL_inplace!=0,
852 O_RDONLY,0,Nullfp);
55497cff 853#endif /* DOSISH */
ff8e2863 854#else
95a20fc0
SP
855 (void)UNLINK(SvPVX_const(sv));
856 if (link(PL_oldname,SvPVX_const(sv)) < 0) {
0453d815 857 if (ckWARN_d(WARN_INPLACE))
9014280d 858 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
35c1215d
NC
859 "Can't rename %s to %"SVf": %s, skipping file",
860 PL_oldname, sv, Strerror(errno) );
79072805 861 do_close(gv,FALSE);
c623bd54
LW
862 continue;
863 }
b28d0864 864 (void)UNLINK(PL_oldname);
a687059c
LW
865#endif
866 }
867 else {
c030f24b 868#if !defined(DOSISH) && !defined(AMIGAOS)
edc7bc49 869# ifndef VMS /* Don't delete; use automatic file versioning */
3280af22 870 if (UNLINK(PL_oldname) < 0) {
0453d815 871 if (ckWARN_d(WARN_INPLACE))
9014280d 872 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
0453d815
PM
873 "Can't remove %s: %s, skipping file",
874 PL_oldname, Strerror(errno) );
79072805 875 do_close(gv,FALSE);
fe14fcc3
LW
876 continue;
877 }
edc7bc49 878# endif
ff8e2863 879#else
cea2e8a9 880 Perl_croak(aTHX_ "Can't do inplace edit without backup");
ff8e2863 881#endif
a687059c
LW
882 }
883
3280af22
NIS
884 sv_setpvn(sv,">",!PL_inplace);
885 sv_catpvn(sv,PL_oldname,oldlen);
748a9306 886 SETERRNO(0,0); /* in case sprintf set errno */
4119ab01 887#ifdef VMS
93524f2b
NC
888 if (!do_open(PL_argvoutgv,(char*)SvPVX_const(sv),SvCUR(sv),
889 PL_inplace!=0,O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp))
4119ab01 890#else
93524f2b
NC
891 if (!do_open(PL_argvoutgv,(char*)SvPVX_const(sv),SvCUR(sv),
892 PL_inplace!=0,O_WRONLY|O_CREAT|OPEN_EXCL,0666,
893 Nullfp))
4119ab01 894#endif
18708f5a 895 {
0453d815 896 if (ckWARN_d(WARN_INPLACE))
9014280d 897 Perl_warner(aTHX_ packWARN(WARN_INPLACE), "Can't do inplace edit on %s: %s",
0453d815 898 PL_oldname, Strerror(errno) );
79072805 899 do_close(gv,FALSE);
fe14fcc3
LW
900 continue;
901 }
3280af22
NIS
902 setdefout(PL_argvoutgv);
903 PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv)));
904 (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf);
fe14fcc3 905#ifdef HAS_FCHMOD
3280af22 906 (void)fchmod(PL_lastfd,PL_filemode);
a687059c 907#else
3e3baf6d
TB
908# if !(defined(WIN32) && defined(__BORLANDC__))
909 /* Borland runtime creates a readonly file! */
b28d0864 910 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
3e3baf6d 911# endif
a687059c 912#endif
3280af22 913 if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) {
fe14fcc3 914#ifdef HAS_FCHOWN
3280af22 915 (void)fchown(PL_lastfd,fileuid,filegid);
a687059c 916#else
fe14fcc3 917#ifdef HAS_CHOWN
b28d0864 918 (void)PerlLIO_chown(PL_oldname,fileuid,filegid);
a687059c 919#endif
b1248f16 920#endif
fe14fcc3 921 }
a687059c 922 }
a0d0e21e 923 return IoIFP(GvIOp(gv));
a687059c 924 }
4d61ec05 925 else {
4d61ec05 926 if (ckWARN_d(WARN_INPLACE)) {
4373e329 927 const int eno = errno;
6af84f9f
GS
928 if (PerlLIO_stat(PL_oldname, &PL_statbuf) >= 0
929 && !S_ISREG(PL_statbuf.st_mode))
930 {
9014280d 931 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
4d61ec05 932 "Can't do inplace edit: %s is not a regular file",
9a7dcd9c 933 PL_oldname);
6af84f9f 934 }
4d61ec05 935 else
9014280d 936 Perl_warner(aTHX_ packWARN(WARN_INPLACE), "Can't open %s: %s",
6af84f9f 937 PL_oldname, Strerror(eno));
4d61ec05
GS
938 }
939 }
a687059c 940 }
18708f5a
GS
941 if (io && (IoFLAGS(io) & IOf_ARGV))
942 IoFLAGS(io) |= IOf_START;
3280af22
NIS
943 if (PL_inplace) {
944 (void)do_close(PL_argvoutgv,FALSE);
7a1c5554
GS
945 if (io && (IoFLAGS(io) & IOf_ARGV)
946 && PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0)
947 {
18708f5a
GS
948 GV *oldout = (GV*)av_pop(PL_argvout_stack);
949 setdefout(oldout);
950 SvREFCNT_dec(oldout);
951 return Nullfp;
952 }
4633a7c4 953 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
a687059c
LW
954 }
955 return Nullfp;
956}
957
fe14fcc3 958#ifdef HAS_PIPE
afd9f252 959void
864dbfa3 960Perl_do_pipe(pTHX_ SV *sv, GV *rgv, GV *wgv)
afd9f252 961{
79072805
LW
962 register IO *rstio;
963 register IO *wstio;
afd9f252
LW
964 int fd[2];
965
79072805 966 if (!rgv)
afd9f252 967 goto badexit;
79072805 968 if (!wgv)
afd9f252
LW
969 goto badexit;
970
a0d0e21e
LW
971 rstio = GvIOn(rgv);
972 wstio = GvIOn(wgv);
afd9f252 973
a0d0e21e 974 if (IoIFP(rstio))
79072805 975 do_close(rgv,FALSE);
a0d0e21e 976 if (IoIFP(wstio))
79072805 977 do_close(wgv,FALSE);
afd9f252 978
3028581b 979 if (PerlProc_pipe(fd) < 0)
afd9f252 980 goto badexit;
460c8493
IZ
981 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
982 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
b5ac89c3 983 IoOFP(rstio) = IoIFP(rstio);
8990e307 984 IoIFP(wstio) = IoOFP(wstio);
50952442
JH
985 IoTYPE(rstio) = IoTYPE_RDONLY;
986 IoTYPE(wstio) = IoTYPE_WRONLY;
8990e307 987 if (!IoIFP(rstio) || !IoOFP(wstio)) {
760ac839 988 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
3028581b 989 else PerlLIO_close(fd[0]);
760ac839 990 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
3028581b 991 else PerlLIO_close(fd[1]);
fe14fcc3
LW
992 goto badexit;
993 }
afd9f252 994
3280af22 995 sv_setsv(sv,&PL_sv_yes);
afd9f252
LW
996 return;
997
998badexit:
3280af22 999 sv_setsv(sv,&PL_sv_undef);
afd9f252
LW
1000 return;
1001}
b1248f16 1002#endif
afd9f252 1003
517844ec 1004/* explicit renamed to avoid C++ conflict -- kja */
a687059c 1005bool
864dbfa3 1006Perl_do_close(pTHX_ GV *gv, bool not_implicit)
a687059c 1007{
1193dd27
IZ
1008 bool retval;
1009 IO *io;
a687059c 1010
79072805 1011 if (!gv)
3280af22 1012 gv = PL_argvgv;
a0d0e21e 1013 if (!gv || SvTYPE(gv) != SVt_PVGV) {
1d2dff63 1014 if (not_implicit)
93189314 1015 SETERRNO(EBADF,SS_IVCHAN);
c2ab57d4 1016 return FALSE;
99b89507 1017 }
79072805
LW
1018 io = GvIO(gv);
1019 if (!io) { /* never opened */
1d2dff63 1020 if (not_implicit) {
2dd78f96
JH
1021 if (ckWARN(WARN_UNOPENED)) /* no check for closed here */
1022 report_evil_fh(gv, io, PL_op->op_type);
93189314 1023 SETERRNO(EBADF,SS_IVCHAN);
1d2dff63 1024 }
a687059c
LW
1025 return FALSE;
1026 }
f2b5be74 1027 retval = io_close(io, not_implicit);
517844ec 1028 if (not_implicit) {
1193dd27
IZ
1029 IoLINES(io) = 0;
1030 IoPAGE(io) = 0;
1031 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1032 }
50952442 1033 IoTYPE(io) = IoTYPE_CLOSED;
1193dd27
IZ
1034 return retval;
1035}
1036
1037bool
f2b5be74 1038Perl_io_close(pTHX_ IO *io, bool not_implicit)
1193dd27
IZ
1039{
1040 bool retval = FALSE;
1193dd27 1041
8990e307 1042 if (IoIFP(io)) {
50952442 1043 if (IoTYPE(io) == IoTYPE_PIPE) {
4373e329 1044 const int status = PerlProc_pclose(IoIFP(io));
f2b5be74
GS
1045 if (not_implicit) {
1046 STATUS_NATIVE_SET(status);
e5218da5 1047 retval = (STATUS_UNIX == 0);
f2b5be74
GS
1048 }
1049 else {
1050 retval = (status != -1);
1051 }
a687059c 1052 }
50952442 1053 else if (IoTYPE(io) == IoTYPE_STD)
a687059c
LW
1054 retval = TRUE;
1055 else {
8990e307 1056 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
e199e3be
RGS
1057 bool prev_err = PerlIO_error(IoOFP(io));
1058 retval = (PerlIO_close(IoOFP(io)) != EOF && !prev_err);
760ac839 1059 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
c2ab57d4 1060 }
e199e3be
RGS
1061 else {
1062 bool prev_err = PerlIO_error(IoIFP(io));
1063 retval = (PerlIO_close(IoIFP(io)) != EOF && !prev_err);
1064 }
a687059c 1065 }
8990e307 1066 IoOFP(io) = IoIFP(io) = Nullfp;
79072805 1067 }
f2b5be74 1068 else if (not_implicit) {
93189314 1069 SETERRNO(EBADF,SS_IVCHAN);
20408e3c 1070 }
1193dd27 1071
a687059c
LW
1072 return retval;
1073}
1074
1075bool
864dbfa3 1076Perl_do_eof(pTHX_ GV *gv)
a687059c 1077{
79072805 1078 register IO *io;
a687059c
LW
1079 int ch;
1080
79072805 1081 io = GvIO(gv);
a687059c 1082
79072805 1083 if (!io)
a687059c 1084 return TRUE;
041457d9 1085 else if ((IoTYPE(io) == IoTYPE_WRONLY) && ckWARN(WARN_IO))
06bcfee8 1086 report_evil_fh(gv, io, OP_phoney_OUTPUT_ONLY);
a687059c 1087
8990e307 1088 while (IoIFP(io)) {
505fdf5d 1089 int saverrno;
a687059c 1090
760ac839 1091 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
a20bf0c3 1092 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
760ac839
LW
1093 return FALSE; /* this is the most usual case */
1094 }
a687059c 1095
505fdf5d 1096 saverrno = errno; /* getc and ungetc can stomp on errno */
760ac839 1097 ch = PerlIO_getc(IoIFP(io));
a687059c 1098 if (ch != EOF) {
760ac839 1099 (void)PerlIO_ungetc(IoIFP(io),ch);
505fdf5d 1100 errno = saverrno;
a687059c
LW
1101 return FALSE;
1102 }
505fdf5d 1103 errno = saverrno;
fab3f3a7 1104
760ac839 1105 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
a20bf0c3
JH
1106 if (PerlIO_get_cnt(IoIFP(io)) < -1)
1107 PerlIO_set_cnt(IoIFP(io),-1);
760ac839 1108 }
533c011a 1109 if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
ed2c6b9b 1110 if (gv != PL_argvgv || !nextargv(gv)) /* get another fp handy */
a687059c
LW
1111 return TRUE;
1112 }
1113 else
1114 return TRUE; /* normal fp, definitely end of file */
1115 }
1116 return TRUE;
1117}
1118
5ff3f7a4 1119Off_t
864dbfa3 1120Perl_do_tell(pTHX_ GV *gv)
a687059c 1121{
9c5ffd7c 1122 register IO *io = 0;
96e4d5b1 1123 register PerlIO *fp;
a687059c 1124
96e4d5b1 1125 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
bee1dbe2 1126#ifdef ULTRIX_STDIO_BOTCH
96e4d5b1
PP
1127 if (PerlIO_eof(fp))
1128 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
bee1dbe2 1129#endif
8903cb82 1130 return PerlIO_tell(fp);
96e4d5b1 1131 }
411caa50
JH
1132 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1133 report_evil_fh(gv, io, PL_op->op_type);
93189314 1134 SETERRNO(EBADF,RMS_IFI);
5ff3f7a4 1135 return (Off_t)-1;
a687059c
LW
1136}
1137
1138bool
864dbfa3 1139Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence)
a687059c 1140{
9c5ffd7c 1141 register IO *io = 0;
137443ea 1142 register PerlIO *fp;
a687059c 1143
137443ea 1144 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
bee1dbe2 1145#ifdef ULTRIX_STDIO_BOTCH
137443ea
PP
1146 if (PerlIO_eof(fp))
1147 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
bee1dbe2 1148#endif
8903cb82 1149 return PerlIO_seek(fp, pos, whence) >= 0;
137443ea 1150 }
411caa50
JH
1151 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1152 report_evil_fh(gv, io, PL_op->op_type);
93189314 1153 SETERRNO(EBADF,RMS_IFI);
a687059c
LW
1154 return FALSE;
1155}
1156
97cc44eb 1157Off_t
864dbfa3 1158Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence)
8903cb82 1159{
9c5ffd7c 1160 register IO *io = 0;
8903cb82
PP
1161 register PerlIO *fp;
1162
1163 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
3028581b 1164 return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
411caa50
JH
1165 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1166 report_evil_fh(gv, io, PL_op->op_type);
93189314 1167 SETERRNO(EBADF,RMS_IFI);
d9b3e12d 1168 return (Off_t)-1;
8903cb82
PP
1169}
1170
6ff81951 1171int
16fe6d59
GS
1172Perl_mode_from_discipline(pTHX_ SV *discp)
1173{
1174 int mode = O_BINARY;
1175 if (discp) {
1176 STRLEN len;
e62f0680 1177 const char *s = SvPV_const(discp,len);
16fe6d59
GS
1178 while (*s) {
1179 if (*s == ':') {
1180 switch (s[1]) {
1181 case 'r':
e963d6d2 1182 if (s[2] == 'a' && s[3] == 'w'
16fe6d59
GS
1183 && (!s[4] || s[4] == ':' || isSPACE(s[4])))
1184 {
1185 mode = O_BINARY;
1186 s += 4;
1187 len -= 4;
1188 break;
1189 }
1190 /* FALL THROUGH */
1191 case 'c':
e963d6d2 1192 if (s[2] == 'r' && s[3] == 'l' && s[4] == 'f'
16fe6d59
GS
1193 && (!s[5] || s[5] == ':' || isSPACE(s[5])))
1194 {
1195 mode = O_TEXT;
1196 s += 5;
1197 len -= 5;
1198 break;
1199 }
1200 /* FALL THROUGH */
1201 default:
1202 goto fail_discipline;
1203 }
1204 }
1205 else if (isSPACE(*s)) {
1206 ++s;
1207 --len;
1208 }
1209 else {
4373e329 1210 const char *end;
16fe6d59
GS
1211fail_discipline:
1212 end = strchr(s+1, ':');
1213 if (!end)
1214 end = s+len;
60382766 1215#ifndef PERLIO_LAYERS
363c40c4 1216 Perl_croak(aTHX_ "IO layers (like '%.*s') unavailable", end-s, s);
60382766 1217#else
18a33fb5 1218 len -= end-s;
60382766
NIS
1219 s = end;
1220#endif
16fe6d59
GS
1221 }
1222 }
1223 }
1224 return mode;
1225}
1226
1227int
1228Perl_do_binmode(pTHX_ PerlIO *fp, int iotype, int mode)
6ff81951 1229{
60382766
NIS
1230 /* The old body of this is now in non-LAYER part of perlio.c
1231 * This is a stub for any XS code which might have been calling it.
1232 */
e1ec3a88 1233 const char *name = ":raw";
35990314 1234#ifdef PERLIO_USING_CRLF
8b24e160 1235 if (!(mode & O_BINARY))
6ce75a77
JH
1236 name = ":crlf";
1237#endif
60382766 1238 return PerlIO_binmode(aTHX_ fp, iotype, mode, name);
6ff81951
GS
1239}
1240
58e24eff 1241#if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE)
27da23d5
JH
1242I32
1243my_chsize(int fd, Off_t length)
6eb13c3b 1244{
58e24eff
SH
1245#ifdef F_FREESP
1246 /* code courtesy of William Kucharski */
1247#define HAS_CHSIZE
1248
6eb13c3b 1249 struct flock fl;
c623ac67 1250 Stat_t filebuf;
6eb13c3b 1251
3028581b 1252 if (PerlLIO_fstat(fd, &filebuf) < 0)
6eb13c3b
LW
1253 return -1;
1254
1255 if (filebuf.st_size < length) {
1256
1257 /* extend file length */
1258
3028581b 1259 if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0)
6eb13c3b
LW
1260 return -1;
1261
1262 /* write a "0" byte */
1263
3028581b 1264 if ((PerlLIO_write(fd, "", 1)) != 1)
6eb13c3b
LW
1265 return -1;
1266 }
1267 else {
1268 /* truncate length */
1269
1270 fl.l_whence = 0;
1271 fl.l_len = 0;
1272 fl.l_start = length;
a0d0e21e 1273 fl.l_type = F_WRLCK; /* write lock on file space */
6eb13c3b
LW
1274
1275 /*
a0d0e21e 1276 * This relies on the UNDOCUMENTED F_FREESP argument to
6eb13c3b
LW
1277 * fcntl(2), which truncates the file so that it ends at the
1278 * position indicated by fl.l_start.
1279 *
1280 * Will minor miracles never cease?
1281 */
1282
a0d0e21e 1283 if (fcntl(fd, F_FREESP, &fl) < 0)
6eb13c3b
LW
1284 return -1;
1285
1286 }
6eb13c3b 1287 return 0;
58e24eff 1288#else
27da23d5 1289 Perl_croak_nocontext("truncate not implemented");
a0d0e21e 1290#endif /* F_FREESP */
27da23d5 1291 return -1;
58e24eff
SH
1292}
1293#endif /* !HAS_TRUNCATE && !HAS_CHSIZE */
ff8e2863 1294
a687059c 1295bool
864dbfa3 1296Perl_do_print(pTHX_ register SV *sv, PerlIO *fp)
a687059c 1297{
e1ec3a88 1298 register const char *tmps;
463ee0b2 1299 STRLEN len;
a687059c 1300
79072805
LW
1301 /* assuming fp is checked earlier */
1302 if (!sv)
1303 return TRUE;
79072805
LW
1304 switch (SvTYPE(sv)) {
1305 case SVt_NULL:
411caa50 1306 if (ckWARN(WARN_UNINITIALIZED))
29489e7c 1307 report_uninit(sv);
ff8e2863 1308 return TRUE;
79072805 1309 case SVt_IV:
a0d0e21e
LW
1310 if (SvIOK(sv)) {
1311 if (SvGMAGICAL(sv))
1312 mg_get(sv);
cf2093f6 1313 if (SvIsUV(sv))
57def98f 1314 PerlIO_printf(fp, "%"UVuf, (UV)SvUVX(sv));
cf2093f6 1315 else
57def98f 1316 PerlIO_printf(fp, "%"IVdf, (IV)SvIVX(sv));
760ac839 1317 return !PerlIO_error(fp);
a0d0e21e
LW
1318 }
1319 /* FALL THROUGH */
79072805 1320 default:
7d59b7e4 1321 if (PerlIO_isutf8(fp)) {
f9a63242 1322 if (!SvUTF8(sv))
88632417
JH
1323 sv_utf8_upgrade_flags(sv = sv_mortalcopy(sv),
1324 SV_GMAGIC|SV_UTF8_NO_ENCODING);
7d59b7e4 1325 }
ae798467 1326 else if (DO_UTF8(sv)) {
2da16753 1327 if (!sv_utf8_downgrade((sv = sv_mortalcopy(sv)), TRUE)
62961d2e 1328 && ckWARN_d(WARN_UTF8))
2da16753 1329 {
9014280d 1330 Perl_warner(aTHX_ packWARN(WARN_UTF8), "Wide character in print");
ae798467
NIS
1331 }
1332 }
5c144d81 1333 tmps = SvPV_const(sv, len);
79072805 1334 break;
ff8e2863 1335 }
94e4c244
JH
1336 /* To detect whether the process is about to overstep its
1337 * filesize limit we would need getrlimit(). We could then
1338 * also transparently raise the limit with setrlimit() --
1339 * but only until the system hard limit/the filesystem limit,
c5dd3cdd
JH
1340 * at which we would get EPERM. Note that when using buffered
1341 * io the write failure can be delayed until the flush/close. --jhi */
a21ac455 1342 if (len && (PerlIO_write(fp,tmps,len) == 0))
a687059c 1343 return FALSE;
760ac839 1344 return !PerlIO_error(fp);
a687059c
LW
1345}
1346
79072805 1347I32
cea2e8a9 1348Perl_my_stat(pTHX)
a687059c 1349{
39644a26 1350 dSP;
79072805 1351 IO *io;
2dd78f96 1352 GV* gv;
79072805 1353
533c011a 1354 if (PL_op->op_flags & OPf_REF) {
924508f0 1355 EXTEND(SP,1);
2dd78f96 1356 gv = cGVOP_gv;
748a9306 1357 do_fstat:
2dd78f96 1358 io = GvIO(gv);
8990e307 1359 if (io && IoIFP(io)) {
2dd78f96 1360 PL_statgv = gv;
c69006e4 1361 sv_setpvn(PL_statname,"", 0);
3280af22
NIS
1362 PL_laststype = OP_STAT;
1363 return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
a687059c
LW
1364 }
1365 else {
2dd78f96 1366 if (gv == PL_defgv)
3280af22 1367 return PL_laststatval;
2dd78f96
JH
1368 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1369 report_evil_fh(gv, io, PL_op->op_type);
3280af22 1370 PL_statgv = Nullgv;
c69006e4 1371 sv_setpvn(PL_statname,"", 0);
3280af22 1372 return (PL_laststatval = -1);
a687059c
LW
1373 }
1374 }
fbb0b3b3
RGS
1375 else if (PL_op->op_private & OPpFT_STACKED) {
1376 return PL_laststatval;
1377 }
a687059c 1378 else {
748a9306 1379 SV* sv = POPs;
4373e329 1380 const char *s;
4ecd490c 1381 STRLEN len;
79072805 1382 PUTBACK;
748a9306 1383 if (SvTYPE(sv) == SVt_PVGV) {
2dd78f96 1384 gv = (GV*)sv;
748a9306
LW
1385 goto do_fstat;
1386 }
1387 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2dd78f96 1388 gv = (GV*)SvRV(sv);
748a9306
LW
1389 goto do_fstat;
1390 }
1391
5c144d81 1392 s = SvPV_const(sv, len);
3280af22 1393 PL_statgv = Nullgv;
4ecd490c 1394 sv_setpvn(PL_statname, s, len);
95a20fc0 1395 s = SvPVX_const(PL_statname); /* s now NUL-terminated */
3280af22
NIS
1396 PL_laststype = OP_STAT;
1397 PL_laststatval = PerlLIO_stat(s, &PL_statcache);
ce44635a 1398 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(s, '\n'))
9014280d 1399 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
3280af22 1400 return PL_laststatval;
a687059c
LW
1401 }
1402}
1403
27da23d5 1404static const char no_prev_lstat[] = "The stat preceding -l _ wasn't an lstat";
fbb0b3b3 1405
79072805 1406I32
cea2e8a9 1407Perl_my_lstat(pTHX)
c623bd54 1408{
39644a26 1409 dSP;
79072805 1410 SV *sv;
533c011a 1411 if (PL_op->op_flags & OPf_REF) {
924508f0 1412 EXTEND(SP,1);
638eceb6 1413 if (cGVOP_gv == PL_defgv) {
3280af22 1414 if (PL_laststype != OP_LSTAT)
fbb0b3b3 1415 Perl_croak(aTHX_ no_prev_lstat);
3280af22 1416 return PL_laststatval;
fe14fcc3 1417 }
5d3e98de 1418 if (ckWARN(WARN_IO)) {
9014280d 1419 Perl_warner(aTHX_ packWARN(WARN_IO), "Use of -l on filehandle %s",
5d3e98de
RGS
1420 GvENAME(cGVOP_gv));
1421 return (PL_laststatval = -1);
1422 }
fe14fcc3 1423 }
041457d9
DM
1424 else if (PL_laststype != OP_LSTAT
1425 && (PL_op->op_private & OPpFT_STACKED) && ckWARN(WARN_IO))
fbb0b3b3 1426 Perl_croak(aTHX_ no_prev_lstat);
c623bd54 1427
3280af22
NIS
1428 PL_laststype = OP_LSTAT;
1429 PL_statgv = Nullgv;
79072805
LW
1430 sv = POPs;
1431 PUTBACK;
5d3e98de 1432 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV && ckWARN(WARN_IO)) {
9014280d 1433 Perl_warner(aTHX_ packWARN(WARN_IO), "Use of -l on filehandle %s",
5d3e98de
RGS
1434 GvENAME((GV*) SvRV(sv)));
1435 return (PL_laststatval = -1);
1436 }
4373e329 1437 /* XXX Do really need to be calling SvPV() all these times? */
e62f0680
NC
1438 sv_setpv(PL_statname,SvPV_nolen_const(sv));
1439 PL_laststatval = PerlLIO_lstat(SvPV_nolen_const(sv),&PL_statcache);
1440 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(sv), '\n'))
9014280d 1441 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "lstat");
3280af22 1442 return PL_laststatval;
c623bd54
LW
1443}
1444
622913ab 1445#ifndef OS2
a687059c 1446bool
864dbfa3 1447Perl_do_aexec(pTHX_ SV *really, register SV **mark, register SV **sp)
a687059c 1448{
d5a9bfb0
IZ
1449 return do_aexec5(really, mark, sp, 0, 0);
1450}
622913ab 1451#endif
d5a9bfb0
IZ
1452
1453bool
2aa1486d
GS
1454Perl_do_aexec5(pTHX_ SV *really, register SV **mark, register SV **sp,
1455 int fd, int do_report)
d5a9bfb0 1456{
27da23d5
JH
1457 dVAR;
1458#if defined(MACOS_TRADITIONAL) || defined(SYMBIAN)
cd39f2b6
JH
1459 Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system");
1460#else
79072805 1461 if (sp > mark) {
c3c5fad7 1462 char **a;
890ce7af 1463 const char *tmps = Nullch;
c3c5fad7
DM
1464 Newx(PL_Argv, sp - mark + 1, char*);
1465 a = PL_Argv;
890ce7af 1466
79072805
LW
1467 while (++mark <= sp) {
1468 if (*mark)
e62f0680 1469 *a++ = (char*)SvPV_nolen_const(*mark);
a687059c
LW
1470 else
1471 *a++ = "";
1472 }
1473 *a = Nullch;
91b2752f 1474 if (really)
e62f0680 1475 tmps = SvPV_nolen_const(really);
91b2752f
RG
1476 if ((!really && *PL_Argv[0] != '/') ||
1477 (really && *tmps != '/')) /* will execvp use PATH? */
79072805 1478 TAINT_ENV(); /* testing IFS here is overkill, probably */
b35112e7 1479 PERL_FPU_PRE_EXEC
91b2752f 1480 if (really && *tmps)
b4748376 1481 PerlProc_execvp(tmps,EXEC_ARGV_CAST(PL_Argv));
a687059c 1482 else
b4748376 1483 PerlProc_execvp(PL_Argv[0],EXEC_ARGV_CAST(PL_Argv));
b35112e7 1484 PERL_FPU_POST_EXEC
599cee73 1485 if (ckWARN(WARN_EXEC))
9014280d 1486 Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't exec \"%s\": %s",
91b2752f 1487 (really ? tmps : PL_Argv[0]), Strerror(errno));
d5a9bfb0
IZ
1488 if (do_report) {
1489 int e = errno;
1490
1491 PerlLIO_write(fd, (void*)&e, sizeof(int));
1492 PerlLIO_close(fd);
1493 }
a687059c 1494 }
bee1dbe2 1495 do_execfree();
cd39f2b6 1496#endif
a687059c
LW
1497 return FALSE;
1498}
1499
fe14fcc3 1500void
864dbfa3 1501Perl_do_execfree(pTHX)
ff8e2863 1502{
43c5f42d
NC
1503 Safefree(PL_Argv);
1504 PL_Argv = Null(char **);
1505 Safefree(PL_Cmd);
1506 PL_Cmd = Nullch;
ff8e2863
LW
1507}
1508
27da23d5 1509#if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(EPOC) && !defined(SYMBIAN) && !defined(MACOS_TRADITIONAL)
760ac839 1510
a687059c 1511bool
864dbfa3 1512Perl_do_exec(pTHX_ char *cmd)
a687059c 1513{
e446cec8
IZ
1514 return do_exec3(cmd,0,0);
1515}
1516
1517bool
864dbfa3 1518Perl_do_exec3(pTHX_ char *cmd, int fd, int do_report)
e446cec8 1519{
27da23d5 1520 dVAR;
a687059c
LW
1521 register char **a;
1522 register char *s;
a687059c 1523
748a9306
LW
1524 while (*cmd && isSPACE(*cmd))
1525 cmd++;
1526
a687059c
LW
1527 /* save an extra exec if possible */
1528
bf38876a 1529#ifdef CSH
d05c1ba0 1530 {
0c19750d 1531 char flags[PERL_FLAGS_MAX];
d05c1ba0
JH
1532 if (strnEQ(cmd,PL_cshname,PL_cshlen) &&
1533 strnEQ(cmd+PL_cshlen," -c",3)) {
0c19750d
SP
1534#ifdef HAS_STRLCPY
1535 strlcpy(flags, "-c", PERL_FLAGS_MAX);
1536#else
d05c1ba0 1537 strcpy(flags,"-c");
0c19750d 1538#endif
d05c1ba0
JH
1539 s = cmd+PL_cshlen+3;
1540 if (*s == 'f') {
1541 s++;
0c19750d
SP
1542#ifdef HAS_STRLCPY
1543 strlcat(flags, "f", PERL_FLAGS_MAX);
1544#else
d05c1ba0 1545 strcat(flags,"f");
0c19750d 1546#endif
d05c1ba0
JH
1547 }
1548 if (*s == ' ')
1549 s++;
1550 if (*s++ == '\'') {
1551 char *ncmd = s;
1552
1553 while (*s)
1554 s++;
1555 if (s[-1] == '\n')
1556 *--s = '\0';
1557 if (s[-1] == '\'') {
1558 *--s = '\0';
b35112e7 1559 PERL_FPU_PRE_EXEC
d05c1ba0 1560 PerlProc_execl(PL_cshname,"csh", flags, ncmd, (char*)0);
b35112e7 1561 PERL_FPU_POST_EXEC
d05c1ba0
JH
1562 *s = '\'';
1563 return FALSE;
1564 }
1565 }
a687059c
LW
1566 }
1567 }
bf38876a 1568#endif /* CSH */
a687059c
LW
1569
1570 /* see if there are shell metacharacters in it */
1571
748a9306
LW
1572 if (*cmd == '.' && isSPACE(cmd[1]))
1573 goto doshell;
1574
1575 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
1576 goto doshell;
1577
c170e444 1578 for (s = cmd; *s && isALNUM(*s); s++) ; /* catch VAR=val gizmo */
63f2c1e1
LW
1579 if (*s == '=')
1580 goto doshell;
748a9306 1581
a687059c 1582 for (s = cmd; *s; s++) {
d05c1ba0
JH
1583 if (*s != ' ' && !isALPHA(*s) &&
1584 strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
a687059c
LW
1585 if (*s == '\n' && !s[1]) {
1586 *s = '\0';
1587 break;
1588 }
603a98b0
IZ
1589 /* handle the 2>&1 construct at the end */
1590 if (*s == '>' && s[1] == '&' && s[2] == '1'
1591 && s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2])
1592 && (!s[3] || isSPACE(s[3])))
1593 {
6867be6d 1594 const char *t = s + 3;
603a98b0
IZ
1595
1596 while (*t && isSPACE(*t))
1597 ++t;
943bbd07 1598 if (!*t && (PerlLIO_dup2(1,2) != -1)) {
603a98b0
IZ
1599 s[-2] = '\0';
1600 break;
1601 }
1602 }
a687059c 1603 doshell:
b35112e7 1604 PERL_FPU_PRE_EXEC
3280af22 1605 PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0);
b35112e7 1606 PERL_FPU_POST_EXEC
a687059c
LW
1607 return FALSE;
1608 }
1609 }
748a9306 1610
a02a5408 1611 Newx(PL_Argv, (s - cmd) / 2 + 2, char*);
3280af22
NIS
1612 PL_Cmd = savepvn(cmd, s-cmd);
1613 a = PL_Argv;
1614 for (s = PL_Cmd; *s;) {
99b89507 1615 while (*s && isSPACE(*s)) s++;
a687059c
LW
1616 if (*s)
1617 *(a++) = s;
99b89507 1618 while (*s && !isSPACE(*s)) s++;
a687059c
LW
1619 if (*s)
1620 *s++ = '\0';
1621 }
1622 *a = Nullch;
3280af22 1623 if (PL_Argv[0]) {
b35112e7 1624 PERL_FPU_PRE_EXEC
3280af22 1625 PerlProc_execvp(PL_Argv[0],PL_Argv);
b35112e7 1626 PERL_FPU_POST_EXEC
b1248f16 1627 if (errno == ENOEXEC) { /* for system V NIH syndrome */
ff8e2863 1628 do_execfree();
a687059c 1629 goto doshell;
b1248f16 1630 }
d008e5eb 1631 {
d008e5eb 1632 if (ckWARN(WARN_EXEC))
9014280d 1633 Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't exec \"%s\": %s",
d008e5eb 1634 PL_Argv[0], Strerror(errno));
e446cec8 1635 if (do_report) {
6867be6d 1636 int e = errno;
e446cec8
IZ
1637 PerlLIO_write(fd, (void*)&e, sizeof(int));
1638 PerlLIO_close(fd);
1639 }
d008e5eb 1640 }
a687059c 1641 }
ff8e2863 1642 do_execfree();
a687059c
LW
1643 return FALSE;
1644}
1645
6890e559 1646#endif /* OS2 || WIN32 */
760ac839 1647
79072805 1648I32
864dbfa3 1649Perl_apply(pTHX_ I32 type, register SV **mark, register SV **sp)
a687059c 1650{
79072805 1651 register I32 val;
79072805 1652 register I32 tot = 0;
e1ec3a88 1653 const char *what;
5c144d81 1654 const char *s;
890ce7af 1655 SV ** const oldmark = mark;
a687059c 1656
20408e3c 1657#define APPLY_TAINT_PROPER() \
3280af22 1658 STMT_START { \
17406bd6 1659 if (PL_tainted) { TAINT_PROPER(what); } \
873ef191 1660 } STMT_END
20408e3c
GS
1661
1662 /* This is a first heuristic; it doesn't catch tainting magic. */
3280af22 1663 if (PL_tainting) {
463ee0b2 1664 while (++mark <= sp) {
bbce6d69
PP
1665 if (SvTAINTED(*mark)) {
1666 TAINT;
1667 break;
1668 }
463ee0b2
LW
1669 }
1670 mark = oldmark;
1671 }
a687059c 1672 switch (type) {
79072805 1673 case OP_CHMOD:
20408e3c
GS
1674 what = "chmod";
1675 APPLY_TAINT_PROPER();
79072805 1676 if (++mark <= sp) {
463ee0b2 1677 val = SvIVx(*mark);
20408e3c
GS
1678 APPLY_TAINT_PROPER();
1679 tot = sp - mark;
79072805 1680 while (++mark <= sp) {
c4aca7d0
GA
1681 GV* gv;
1682 if (SvTYPE(*mark) == SVt_PVGV) {
1683 gv = (GV*)*mark;
1684 do_fchmod:
1685 if (GvIO(gv) && IoIFP(GvIOp(gv))) {
1686#ifdef HAS_FCHMOD
1687 APPLY_TAINT_PROPER();
1688 if (fchmod(PerlIO_fileno(IoIFP(GvIOn(gv))), val))
1689 tot--;
1690#else
1691 DIE(aTHX_ PL_no_func, "fchmod");
1692#endif
1693 }
1694 else {
1695 tot--;
1696 }
1697 }
1698 else if (SvROK(*mark) && SvTYPE(SvRV(*mark)) == SVt_PVGV) {
1699 gv = (GV*)SvRV(*mark);
1700 goto do_fchmod;
1701 }
1702 else {
1703 const char *name = SvPV_nolen_const(*mark);
1704 APPLY_TAINT_PROPER();
1705 if (PerlLIO_chmod(name, val))
1706 tot--;
1707 }
a687059c
LW
1708 }
1709 }
1710 break;
fe14fcc3 1711#ifdef HAS_CHOWN
79072805 1712 case OP_CHOWN:
20408e3c
GS
1713 what = "chown";
1714 APPLY_TAINT_PROPER();
79072805 1715 if (sp - mark > 2) {
6867be6d 1716 register I32 val2;
463ee0b2
LW
1717 val = SvIVx(*++mark);
1718 val2 = SvIVx(*++mark);
20408e3c 1719 APPLY_TAINT_PROPER();
a0d0e21e 1720 tot = sp - mark;
79072805 1721 while (++mark <= sp) {
c4aca7d0
GA
1722 GV* gv;
1723 if (SvTYPE(*mark) == SVt_PVGV) {
1724 gv = (GV*)*mark;
1725 do_fchown:
1726 if (GvIO(gv) && IoIFP(GvIOp(gv))) {
1727#ifdef HAS_FCHOWN
1728 APPLY_TAINT_PROPER();
1729 if (fchown(PerlIO_fileno(IoIFP(GvIOn(gv))), val, val2))
1730 tot--;
1731#else
1732 DIE(aTHX_ PL_no_func, "fchown");
1733#endif
1734 }
1735 else {
1736 tot--;
1737 }
1738 }
1739 else if (SvROK(*mark) && SvTYPE(SvRV(*mark)) == SVt_PVGV) {
1740 gv = (GV*)SvRV(*mark);
1741 goto do_fchown;
1742 }
1743 else {
1744 const char *name = SvPV_nolen_const(*mark);
1745 APPLY_TAINT_PROPER();
1746 if (PerlLIO_chown(name, val, val2))
1747 tot--;
1748 }
a687059c
LW
1749 }
1750 }
1751 break;
b1248f16 1752#endif
a1d180c4 1753/*
dd64f1c3
AD
1754XXX Should we make lchown() directly available from perl?
1755For now, we'll let Configure test for HAS_LCHOWN, but do
1756nothing in the core.
1757 --AD 5/1998
1758*/
fe14fcc3 1759#ifdef HAS_KILL
79072805 1760 case OP_KILL:
20408e3c
GS
1761 what = "kill";
1762 APPLY_TAINT_PROPER();
55497cff
PP
1763 if (mark == sp)
1764 break;
e62f0680 1765 s = SvPVx_nolen_const(*++mark);
e02bfb16 1766 if (isALPHA(*s)) {
79072805
LW
1767 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1768 s += 3;
e02bfb16 1769 if ((val = whichsig(s)) < 0)
cea2e8a9 1770 Perl_croak(aTHX_ "Unrecognized signal name \"%s\"",s);
79072805
LW
1771 }
1772 else
463ee0b2 1773 val = SvIVx(*mark);
20408e3c
GS
1774 APPLY_TAINT_PROPER();
1775 tot = sp - mark;
3595fcef
PP
1776#ifdef VMS
1777 /* kill() doesn't do process groups (job trees?) under VMS */
1778 if (val < 0) val = -val;
1779 if (val == SIGKILL) {
1780# include <starlet.h>
1781 /* Use native sys$delprc() to insure that target process is
1782 * deleted; supervisor-mode images don't pay attention to
1783 * CRTL's emulation of Unix-style signals and kill()
1784 */
1785 while (++mark <= sp) {
1786 I32 proc = SvIVx(*mark);
1787 register unsigned long int __vmssts;
20408e3c 1788 APPLY_TAINT_PROPER();
3595fcef
PP
1789 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1790 tot--;
1791 switch (__vmssts) {
1792 case SS$_NONEXPR:
1793 case SS$_NOSUCHNODE:
1794 SETERRNO(ESRCH,__vmssts);
1795 break;
1796 case SS$_NOPRIV:
1797 SETERRNO(EPERM,__vmssts);
1798 break;
1799 default:
1800 SETERRNO(EVMSERR,__vmssts);
1801 }
1802 }
1803 }
1804 break;
1805 }
1806#endif
79072805
LW
1807 if (val < 0) {
1808 val = -val;
1809 while (++mark <= sp) {
463ee0b2 1810 I32 proc = SvIVx(*mark);
20408e3c 1811 APPLY_TAINT_PROPER();
fe14fcc3 1812#ifdef HAS_KILLPG
3028581b 1813 if (PerlProc_killpg(proc,val)) /* BSD */
a687059c 1814#else
3028581b 1815 if (PerlProc_kill(-proc,val)) /* SYSV */
a687059c 1816#endif
79072805 1817 tot--;
a687059c 1818 }
79072805
LW
1819 }
1820 else {
1821 while (++mark <= sp) {
20408e3c
GS
1822 I32 proc = SvIVx(*mark);
1823 APPLY_TAINT_PROPER();
1824 if (PerlProc_kill(proc, val))
79072805 1825 tot--;
a687059c
LW
1826 }
1827 }
1828 break;
b1248f16 1829#endif
79072805 1830 case OP_UNLINK:
20408e3c
GS
1831 what = "unlink";
1832 APPLY_TAINT_PROPER();
79072805
LW
1833 tot = sp - mark;
1834 while (++mark <= sp) {
e62f0680 1835 s = SvPV_nolen_const(*mark);
20408e3c 1836 APPLY_TAINT_PROPER();
3280af22 1837 if (PL_euid || PL_unsafe) {
a687059c
LW
1838 if (UNLINK(s))
1839 tot--;
1840 }
1841 else { /* don't let root wipe out directories without -U */
3280af22 1842 if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
a687059c
LW
1843 tot--;
1844 else {
1845 if (UNLINK(s))
1846 tot--;
1847 }
1848 }
1849 }
1850 break;
a0d0e21e 1851#ifdef HAS_UTIME
79072805 1852 case OP_UTIME:
20408e3c
GS
1853 what = "utime";
1854 APPLY_TAINT_PROPER();
79072805 1855 if (sp - mark > 2) {
748a9306 1856#if defined(I_UTIME) || defined(VMS)
663a0e37 1857 struct utimbuf utbuf;
07409e01 1858 struct utimbuf *utbufp = &utbuf;
663a0e37 1859#else
a687059c 1860 struct {
dd2821f6
GS
1861 Time_t actime;
1862 Time_t modtime;
a687059c 1863 } utbuf;
07409e01 1864 void *utbufp = &utbuf;
663a0e37 1865#endif
a687059c 1866
c6f7b413
RS
1867 SV* accessed = *++mark;
1868 SV* modified = *++mark;
c6f7b413 1869
6ec06612
SB
1870 /* Be like C, and if both times are undefined, let the C
1871 * library figure out what to do. This usually means
1872 * "current time". */
c6f7b413
RS
1873
1874 if ( accessed == &PL_sv_undef && modified == &PL_sv_undef )
6ec06612
SB
1875 utbufp = NULL;
1876 else {
1877 Zero(&utbuf, sizeof utbuf, char);
517844ec 1878#ifdef BIG_TIME
6ec06612
SB
1879 utbuf.actime = (Time_t)SvNVx(accessed); /* time accessed */
1880 utbuf.modtime = (Time_t)SvNVx(modified); /* time modified */
517844ec 1881#else
6ec06612
SB
1882 utbuf.actime = (Time_t)SvIVx(accessed); /* time accessed */
1883 utbuf.modtime = (Time_t)SvIVx(modified); /* time modified */
517844ec 1884#endif
6ec06612 1885 }
4373e329 1886 APPLY_TAINT_PROPER();
79072805
LW
1887 tot = sp - mark;
1888 while (++mark <= sp) {
d08fa760 1889 char *name = SvPV_nolen(*mark);
20408e3c 1890 APPLY_TAINT_PROPER();
4373e329 1891 if (PerlLIO_utime(name, utbufp))
a687059c
LW
1892 tot--;
1893 }
a687059c
LW
1894 }
1895 else
79072805 1896 tot = 0;
a687059c 1897 break;
a0d0e21e 1898#endif
a687059c
LW
1899 }
1900 return tot;
20408e3c 1901
20408e3c 1902#undef APPLY_TAINT_PROPER
a687059c
LW
1903}
1904
1905/* Do the permissions allow some operation? Assumes statcache already set. */
a0d0e21e 1906#ifndef VMS /* VMS' cando is in vms.c */
7f4774ae 1907bool
4373e329 1908Perl_cando(pTHX_ Mode_t mode, Uid_t effective, register const Stat_t *statbufp)
a0288114 1909/* Note: we use "effective" both for uids and gids.
7f4774ae 1910 * Here we are betting on Uid_t being equal or wider than Gid_t. */
a687059c 1911{
bee1dbe2 1912#ifdef DOSISH
fe14fcc3
LW
1913 /* [Comments and code from Len Reed]
1914 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1915 * to write-protected files. The execute permission bit is set
1916 * by the Miscrosoft C library stat() function for the following:
1917 * .exe files
1918 * .com files
1919 * .bat files
1920 * directories
1921 * All files and directories are readable.
1922 * Directories and special files, e.g. "CON", cannot be
1923 * write-protected.
1924 * [Comment by Tom Dinger -- a directory can have the write-protect
1925 * bit set in the file system, but DOS permits changes to
1926 * the directory anyway. In addition, all bets are off
1927 * here for networked software, such as Novell and
1928 * Sun's PC-NFS.]
1929 */
1930
bee1dbe2
LW
1931 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1932 * too so it will actually look into the files for magic numbers
1933 */
7f4774ae 1934 return (mode & statbufp->st_mode) ? TRUE : FALSE;
fe14fcc3 1935
55497cff 1936#else /* ! DOSISH */
3280af22 1937 if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */
7f4774ae 1938 if (mode == S_IXUSR) {
c623bd54 1939 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
a687059c
LW
1940 return TRUE;
1941 }
1942 else
1943 return TRUE; /* root reads and writes anything */
1944 return FALSE;
1945 }
3280af22 1946 if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) {
7f4774ae 1947 if (statbufp->st_mode & mode)
a687059c
LW
1948 return TRUE; /* ok as "user" */
1949 }
d8eceb89 1950 else if (ingroup(statbufp->st_gid,effective)) {
7f4774ae 1951 if (statbufp->st_mode & mode >> 3)
a687059c
LW
1952 return TRUE; /* ok as "group" */
1953 }
7f4774ae 1954 else if (statbufp->st_mode & mode >> 6)
a687059c
LW
1955 return TRUE; /* ok as "other" */
1956 return FALSE;
55497cff 1957#endif /* ! DOSISH */
a687059c 1958}
a0d0e21e 1959#endif /* ! VMS */
a687059c 1960
d8eceb89
JH
1961bool
1962Perl_ingroup(pTHX_ Gid_t testgid, Uid_t effective)
a687059c 1963{
cd39f2b6
JH
1964#ifdef MACOS_TRADITIONAL
1965 /* This is simply not correct for AppleShare, but fix it yerself. */
1966 return TRUE;
1967#else
3280af22 1968 if (testgid == (effective ? PL_egid : PL_gid))
a687059c 1969 return TRUE;
fe14fcc3 1970#ifdef HAS_GETGROUPS
a687059c
LW
1971#ifndef NGROUPS
1972#define NGROUPS 32
1973#endif
1974 {
a0d0e21e 1975 Groups_t gary[NGROUPS];
79072805 1976 I32 anum;
a687059c
LW
1977
1978 anum = getgroups(NGROUPS,gary);
1979 while (--anum >= 0)
1980 if (gary[anum] == testgid)
1981 return TRUE;
1982 }
1983#endif
1984 return FALSE;
cd39f2b6 1985#endif
a687059c 1986}
c2ab57d4 1987
fe14fcc3 1988#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
c2ab57d4 1989
79072805 1990I32
864dbfa3 1991Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp)
c2ab57d4 1992{
6867be6d
AL
1993 key_t key = (key_t)SvNVx(*++mark);
1994 const I32 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1995 const I32 flags = SvIVx(*++mark);
1996 (void)sp;
c2ab57d4 1997
748a9306 1998 SETERRNO(0,0);
c2ab57d4
LW
1999 switch (optype)
2000 {
fe14fcc3 2001#ifdef HAS_MSG
79072805 2002 case OP_MSGGET:
c2ab57d4 2003 return msgget(key, flags);
e5d73d77 2004#endif
fe14fcc3 2005#ifdef HAS_SEM
79072805 2006 case OP_SEMGET:
c2ab57d4 2007 return semget(key, n, flags);
e5d73d77 2008#endif
fe14fcc3 2009#ifdef HAS_SHM
79072805 2010 case OP_SHMGET:
c2ab57d4 2011 return shmget(key, n, flags);
e5d73d77 2012#endif
fe14fcc3 2013#if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
e5d73d77 2014 default:
cea2e8a9 2015 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
e5d73d77 2016#endif
c2ab57d4
LW
2017 }
2018 return -1; /* should never happen */
2019}
2020
79072805 2021I32
864dbfa3 2022Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp)
c2ab57d4 2023{
79072805 2024 SV *astr;
c2ab57d4 2025 char *a;
b464bac0
AL
2026 STRLEN infosize;
2027 I32 getinfo;
a0d0e21e 2028 I32 ret = -1;
6867be6d
AL
2029 const I32 id = SvIVx(*++mark);
2030 const I32 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
2031 const I32 cmd = SvIVx(*++mark);
890ce7af 2032 PERL_UNUSED_ARG(sp);
c2ab57d4 2033
79072805 2034 astr = *++mark;
c2ab57d4
LW
2035 infosize = 0;
2036 getinfo = (cmd == IPC_STAT);
2037
2038 switch (optype)
2039 {
fe14fcc3 2040#ifdef HAS_MSG
79072805 2041 case OP_MSGCTL:
c2ab57d4
LW
2042 if (cmd == IPC_STAT || cmd == IPC_SET)
2043 infosize = sizeof(struct msqid_ds);
2044 break;
e5d73d77 2045#endif
fe14fcc3 2046#ifdef HAS_SHM
79072805 2047 case OP_SHMCTL:
c2ab57d4
LW
2048 if (cmd == IPC_STAT || cmd == IPC_SET)
2049 infosize = sizeof(struct shmid_ds);
2050 break;
e5d73d77 2051#endif
fe14fcc3 2052#ifdef HAS_SEM
79072805 2053 case OP_SEMCTL:
39398f3f 2054#ifdef Semctl
c2ab57d4
LW
2055 if (cmd == IPC_STAT || cmd == IPC_SET)
2056 infosize = sizeof(struct semid_ds);
2057 else if (cmd == GETALL || cmd == SETALL)
2058 {
8e591e46 2059 struct semid_ds semds;
bd89102f 2060 union semun semun;
e6f0bdd6
GS
2061#ifdef EXTRA_F_IN_SEMUN_BUF
2062 semun.buff = &semds;
2063#else
84902520 2064 semun.buf = &semds;
e6f0bdd6 2065#endif
c2ab57d4 2066 getinfo = (cmd == GETALL);
9b89d93d
GB
2067 if (Semctl(id, 0, IPC_STAT, semun) == -1)
2068 return -1;
6e21c824
LW
2069 infosize = semds.sem_nsems * sizeof(short);
2070 /* "short" is technically wrong but much more portable
2071 than guessing about u_?short(_t)? */
c2ab57d4 2072 }
39398f3f 2073#else
cea2e8a9 2074 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
39398f3f 2075#endif
c2ab57d4 2076 break;
e5d73d77 2077#endif
fe14fcc3 2078#if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
e5d73d77 2079 default:
cea2e8a9 2080 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
e5d73d77 2081#endif
c2ab57d4
LW
2082 }
2083
2084 if (infosize)
2085 {
2086 if (getinfo)
2087 {
93524f2b 2088 SvPV_force_nolen(astr);
a0d0e21e 2089 a = SvGROW(astr, infosize+1);
c2ab57d4
LW
2090 }
2091 else
2092 {
93524f2b 2093 STRLEN len;
463ee0b2
LW
2094 a = SvPV(astr, len);
2095 if (len != infosize)
cea2e8a9 2096 Perl_croak(aTHX_ "Bad arg length for %s, is %lu, should be %ld",
4ec43091
JH
2097 PL_op_desc[optype],
2098 (unsigned long)len,
2099 (long)infosize);
c2ab57d4
LW
2100 }
2101 }
2102 else
2103 {
c030ccd9 2104 IV i = SvIV(astr);
56431972 2105 a = INT2PTR(char *,i); /* ouch */
c2ab57d4 2106 }
748a9306 2107 SETERRNO(0,0);
c2ab57d4
LW
2108 switch (optype)
2109 {
fe14fcc3 2110#ifdef HAS_MSG
79072805 2111 case OP_MSGCTL:
bee1dbe2 2112 ret = msgctl(id, cmd, (struct msqid_ds *)a);
c2ab57d4 2113 break;
e5d73d77 2114#endif
fe14fcc3 2115#ifdef HAS_SEM
bd89102f 2116 case OP_SEMCTL: {
39398f3f 2117#ifdef Semctl
bd89102f
AD
2118 union semun unsemds;
2119
e6f0bdd6
GS
2120#ifdef EXTRA_F_IN_SEMUN_BUF
2121 unsemds.buff = (struct semid_ds *)a;
2122#else
bd89102f 2123 unsemds.buf = (struct semid_ds *)a;
e6f0bdd6 2124#endif
bd89102f 2125 ret = Semctl(id, n, cmd, unsemds);
39398f3f 2126#else
cea2e8a9 2127 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
39398f3f 2128#endif
bd89102f 2129 }
c2ab57d4 2130 break;
e5d73d77 2131#endif
fe14fcc3 2132#ifdef HAS_SHM
79072805 2133 case OP_SHMCTL:
bee1dbe2 2134 ret = shmctl(id, cmd, (struct shmid_ds *)a);
c2ab57d4 2135 break;
e5d73d77 2136#endif
c2ab57d4
LW
2137 }
2138 if (getinfo && ret >= 0) {
79072805
LW
2139 SvCUR_set(astr, infosize);
2140 *SvEND(astr) = '\0';
a0d0e21e 2141 SvSETMAGIC(astr);
c2ab57d4
LW
2142 }
2143 return ret;
2144}
2145
79072805 2146I32
864dbfa3 2147Perl_do_msgsnd(pTHX_ SV **mark, SV **sp)
c2ab57d4 2148{
fe14fcc3 2149#ifdef HAS_MSG
79072805 2150 SV *mstr;
93524f2b 2151 const char *mbuf;
6867be6d 2152 I32 msize, flags;
463ee0b2 2153 STRLEN len;
6867be6d 2154 const I32 id = SvIVx(*++mark);
890ce7af 2155 PERL_UNUSED_ARG(sp);
c2ab57d4 2156
79072805 2157 mstr = *++mark;
463ee0b2 2158 flags = SvIVx(*++mark);
93524f2b 2159 mbuf = SvPV_const(mstr, len);
463ee0b2 2160 if ((msize = len - sizeof(long)) < 0)
cea2e8a9 2161 Perl_croak(aTHX_ "Arg too short for msgsnd");
748a9306 2162 SETERRNO(0,0);
bee1dbe2 2163 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
e5d73d77 2164#else
cea2e8a9 2165 Perl_croak(aTHX_ "msgsnd not implemented");
e5d73d77 2166#endif
c2ab57d4
LW
2167}
2168
79072805 2169I32
864dbfa3 2170Perl_do_msgrcv(pTHX_ SV **mark, SV **sp)
c2ab57d4 2171{
fe14fcc3 2172#ifdef HAS_MSG
79072805 2173 SV *mstr;
c2ab57d4
LW
2174 char *mbuf;
2175 long mtype;
6867be6d 2176 I32 msize, flags, ret;
6867be6d 2177 const I32 id = SvIVx(*++mark);
890ce7af 2178 PERL_UNUSED_ARG(sp);
79072805 2179
79072805 2180 mstr = *++mark;
c2e66d9e
GS
2181 /* suppress warning when reading into undef var --jhi */
2182 if (! SvOK(mstr))
2183 sv_setpvn(mstr, "", 0);
463ee0b2
LW
2184 msize = SvIVx(*++mark);
2185 mtype = (long)SvIVx(*++mark);
2186 flags = SvIVx(*++mark);
93524f2b 2187 SvPV_force_nolen(mstr);
a0d0e21e 2188 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
a1d180c4 2189
748a9306 2190 SETERRNO(0,0);
bee1dbe2 2191 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
c2ab57d4 2192 if (ret >= 0) {
79072805
LW
2193 SvCUR_set(mstr, sizeof(long)+ret);
2194 *SvEND(mstr) = '\0';
41d6edb2
JH
2195#ifndef INCOMPLETE_TAINTS
2196 /* who knows who has been playing with this message? */
2197 SvTAINTED_on(mstr);
2198#endif
c2ab57d4
LW
2199 }
2200 return ret;
e5d73d77 2201#else
cea2e8a9 2202 Perl_croak(aTHX_ "msgrcv not implemented");
e5d73d77 2203#endif
c2ab57d4
LW
2204}
2205
79072805 2206I32
864dbfa3 2207Perl_do_semop(pTHX_ SV **mark, SV **sp)
c2ab57d4 2208{
fe14fcc3 2209#ifdef HAS_SEM
79072805 2210 SV *opstr;
93524f2b 2211 const char *opbuf;
463ee0b2 2212 STRLEN opsize;
6867be6d 2213 const I32 id = SvIVx(*++mark);
890ce7af 2214 PERL_UNUSED_ARG(sp);
c2ab57d4 2215
79072805 2216 opstr = *++mark;
93524f2b 2217 opbuf = SvPV_const(opstr, opsize);
248ff010
NC
2218 if (opsize < 3 * SHORTSIZE
2219 || (opsize % (3 * SHORTSIZE))) {
93189314 2220 SETERRNO(EINVAL,LIB_INVARG);
c2ab57d4
LW
2221 return -1;
2222 }
748a9306 2223 SETERRNO(0,0);
248ff010
NC
2224 /* We can't assume that sizeof(struct sembuf) == 3 * sizeof(short). */
2225 {
6867be6d 2226 const int nsops = opsize / (3 * sizeof (short));
248ff010
NC
2227 int i = nsops;
2228 short *ops = (short *) opbuf;
2229 short *o = ops;
2230 struct sembuf *temps, *t;
2231 I32 result;
2232
a02a5408 2233 Newx (temps, nsops, struct sembuf);
248ff010
NC
2234 t = temps;
2235 while (i--) {
2236 t->sem_num = *o++;
2237 t->sem_op = *o++;
2238 t->sem_flg = *o++;
2239 t++;
2240 }
2241 result = semop(id, temps, nsops);
2242 t = temps;
2243 o = ops;
2244 i = nsops;
2245 while (i--) {
2246 *o++ = t->sem_num;
2247 *o++ = t->sem_op;
2248 *o++ = t->sem_flg;
2249 t++;
2250 }
2251 Safefree(temps);
2252 return result;
2253 }
e5d73d77 2254#else
cea2e8a9 2255 Perl_croak(aTHX_ "semop not implemented");
e5d73d77 2256#endif
c2ab57d4
LW
2257}
2258
79072805 2259I32
864dbfa3 2260Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp)
c2ab57d4 2261{
fe14fcc3 2262#ifdef HAS_SHM
79072805 2263 SV *mstr;
4373e329 2264 char *shm;
6867be6d 2265 I32 mpos, msize;
c2ab57d4 2266 struct shmid_ds shmds;
6867be6d 2267 const I32 id = SvIVx(*++mark);
890ce7af 2268 PERL_UNUSED_ARG(sp);
c2ab57d4 2269
79072805 2270 mstr = *++mark;
463ee0b2
LW
2271 mpos = SvIVx(*++mark);
2272 msize = SvIVx(*++mark);
748a9306 2273 SETERRNO(0,0);
c2ab57d4
LW
2274 if (shmctl(id, IPC_STAT, &shmds) == -1)
2275 return -1;
2276 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
93189314 2277 SETERRNO(EFAULT,SS_ACCVIO); /* can't do as caller requested */
c2ab57d4
LW
2278 return -1;
2279 }
8ac85365 2280 shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
c2ab57d4
LW
2281 if (shm == (char *)-1) /* I hate System V IPC, I really do */
2282 return -1;
79072805 2283 if (optype == OP_SHMREAD) {
4373e329 2284 const char *mbuf;
9f538c04
GS
2285 /* suppress warning when reading into undef var (tchrist 3/Mar/00) */
2286 if (! SvOK(mstr))
2287 sv_setpvn(mstr, "", 0);
93524f2b 2288 SvPV_force_nolen(mstr);
a0d0e21e
LW
2289 mbuf = SvGROW(mstr, msize+1);
2290
bee1dbe2 2291 Copy(shm + mpos, mbuf, msize, char);
79072805
LW
2292 SvCUR_set(mstr, msize);
2293 *SvEND(mstr) = '\0';
a0d0e21e 2294 SvSETMAGIC(mstr);
d929ce6f
JH
2295#ifndef INCOMPLETE_TAINTS
2296 /* who knows who has been playing with this shared memory? */
2297 SvTAINTED_on(mstr);
2298#endif
c2ab57d4
LW
2299 }
2300 else {
79072805 2301 I32 n;
93524f2b 2302 STRLEN len;
c2ab57d4 2303
93524f2b 2304 const char *mbuf = SvPV_const(mstr, len);
463ee0b2 2305 if ((n = len) > msize)
c2ab57d4 2306 n = msize;
bee1dbe2 2307 Copy(mbuf, shm + mpos, n, char);
c2ab57d4 2308 if (n < msize)
bee1dbe2 2309 memzero(shm + mpos + n, msize - n);
c2ab57d4
LW
2310 }
2311 return shmdt(shm);
e5d73d77 2312#else
cea2e8a9 2313 Perl_croak(aTHX_ "shm I/O not implemented");
e5d73d77 2314#endif
c2ab57d4
LW
2315}
2316
fe14fcc3 2317#endif /* SYSV IPC */
4e35701f 2318
0d44d22b 2319/*
ccfc67b7
JH
2320=head1 IO Functions
2321
0d44d22b
NC
2322=for apidoc start_glob
2323
2324Function called by C<do_readline> to spawn a glob (or do the glob inside
2325perl on VMS). This code used to be inline, but now perl uses C<File::Glob>
210b36aa 2326this glob starter is only used by miniperl during the build process.
0d44d22b 2327Moving it away shrinks pp_hot.c; shrinking pp_hot.c helps speed perl up.
fab3f3a7 2328
0d44d22b
NC
2329=cut
2330*/
2331
2332PerlIO *
2333Perl_start_glob (pTHX_ SV *tmpglob, IO *io)
2334{
27da23d5 2335 dVAR;
0d44d22b
NC
2336 SV *tmpcmd = NEWSV(55, 0);
2337 PerlIO *fp;
2338 ENTER;
2339 SAVEFREESV(tmpcmd);
2340#ifdef VMS /* expand the wildcards right here, rather than opening a pipe, */
2341 /* since spawning off a process is a real performance hit */
2342 {
2343#include <descrip.h>
2344#include <lib$routines.h>
2345#include <nam.h>
2346#include <rmsdef.h>
2347 char rslt[NAM$C_MAXRSS+1+sizeof(unsigned short int)] = {'\0','\0'};
2348 char vmsspec[NAM$C_MAXRSS+1];
890ce7af
AL
2349 char * const rstr = rslt + sizeof(unsigned short int);
2350 char *begin, *end, *cp;
0d44d22b
NC
2351 $DESCRIPTOR(dfltdsc,"SYS$DISK:[]*.*;");
2352 PerlIO *tmpfp;
2353 STRLEN i;
2354 struct dsc$descriptor_s wilddsc
2355 = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0};
2356 struct dsc$descriptor_vs rsdsc
2357 = {sizeof rslt, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, rslt};
2358 unsigned long int cxt = 0, sts = 0, ok = 1, hasdir = 0, hasver = 0, isunix = 0;
2359
2360 /* We could find out if there's an explicit dev/dir or version
2361 by peeking into lib$find_file's internal context at
2362 ((struct NAM *)((struct FAB *)cxt)->fab$l_nam)->nam$l_fnb
2363 but that's unsupported, so I don't want to do it now and
2364 have it bite someone in the future. */
0d44d22b
NC
2365 cp = SvPV(tmpglob,i);
2366 for (; i; i--) {
2367 if (cp[i] == ';') hasver = 1;
2368 if (cp[i] == '.') {
2369 if (sts) hasver = 1;
2370 else sts = 1;
2371 }
2372 if (cp[i] == '/') {
2373 hasdir = isunix = 1;
2374 break;
2375 }
2376 if (cp[i] == ']' || cp[i] == '>' || cp[i] == ':') {
2377 hasdir = 1;
2378 break;
2379 }
2380 }
a15cef0c 2381 if ((tmpfp = PerlIO_tmpfile()) != NULL) {
0d44d22b 2382 Stat_t st;
95a20fc0 2383 if (!PerlLIO_stat(SvPVX_const(tmpglob),&st) && S_ISDIR(st.st_mode))
94a11853
CB
2384 ok = ((wilddsc.dsc$a_pointer = tovmspath(SvPVX(tmpglob),vmsspec)) != NULL);
2385 else ok = ((wilddsc.dsc$a_pointer = tovmsspec(SvPVX(tmpglob),vmsspec)) != NULL);
0d44d22b 2386 if (ok) wilddsc.dsc$w_length = (unsigned short int) strlen(wilddsc.dsc$a_pointer);
a3987cb8
JH
2387 for (cp=wilddsc.dsc$a_pointer; ok && cp && *cp; cp++)
2388 if (*cp == '?') *cp = '%'; /* VMS style single-char wildcard */
0d44d22b
NC
2389 while (ok && ((sts = lib$find_file(&wilddsc,&rsdsc,&cxt,
2390 &dfltdsc,NULL,NULL,NULL))&1)) {
3ce6b0cb
CB
2391 /* with varying string, 1st word of buffer contains result length */
2392 end = rstr + *((unsigned short int*)rslt);
2393 if (!hasver) while (*end != ';' && end > rstr) end--;
0d44d22b
NC
2394 *(end++) = '\n'; *end = '\0';
2395 for (cp = rstr; *cp; cp++) *cp = _tolower(*cp);
2396 if (hasdir) {
2397 if (isunix) trim_unixpath(rstr,SvPVX(tmpglob),1);
2398 begin = rstr;
2399 }
2400 else {
2401 begin = end;
2402 while (*(--begin) != ']' && *begin != '>') ;
2403 ++begin;
2404 }
2405 ok = (PerlIO_puts(tmpfp,begin) != EOF);
2406 }
2407 if (cxt) (void)lib$find_file_end(&cxt);
2408 if (ok && sts != RMS$_NMF &&
93189314 2409 sts != RMS$_DNF && sts != RMS_FNF) ok = 0;
0d44d22b
NC
2410 if (!ok) {
2411 if (!(sts & 1)) {
2412 SETERRNO((sts == RMS$_SYN ? EINVAL : EVMSERR),sts);
2413 }
2414 PerlIO_close(tmpfp);
2415 fp = NULL;
2416 }
2417 else {
2418 PerlIO_rewind(tmpfp);
2419 IoTYPE(io) = IoTYPE_RDONLY;
2420 IoIFP(io) = fp = tmpfp;
2421 IoFLAGS(io) &= ~IOf_UNTAINT; /* maybe redundant */
2422 }
2423 }
2424 }
2425#else /* !VMS */
2426#ifdef MACOS_TRADITIONAL
2427 sv_setpv(tmpcmd, "glob ");
2428 sv_catsv(tmpcmd, tmpglob);
2429 sv_catpv(tmpcmd, " |");
2430#else
2431#ifdef DOSISH
2432#ifdef OS2
2433 sv_setpv(tmpcmd, "for a in ");
2434 sv_catsv(tmpcmd, tmpglob);
2435 sv_catpv(tmpcmd, "; do echo \"$a\\0\\c\"; done |");
2436#else
2437#ifdef DJGPP
2438 sv_setpv(tmpcmd, "/dev/dosglob/"); /* File System Extension */
2439 sv_catsv(tmpcmd, tmpglob);
2440#else
2441 sv_setpv(tmpcmd, "perlglob ");
2442 sv_catsv(tmpcmd, tmpglob);
2443 sv_catpv(tmpcmd, " |");
2444#endif /* !DJGPP */
2445#endif /* !OS2 */
2446#else /* !DOSISH */
2447#if defined(CSH)
2448 sv_setpvn(tmpcmd, PL_cshname, PL_cshlen);
2449 sv_catpv(tmpcmd, " -cf 'set nonomatch; glob ");
2450 sv_catsv(tmpcmd, tmpglob);
2451 sv_catpv(tmpcmd, "' 2>/dev/null |");
2452#else
2453 sv_setpv(tmpcmd, "echo ");
2454 sv_catsv(tmpcmd, tmpglob);
2455#if 'z' - 'a' == 25
2456 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|");
2457#else
2458 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|");
2459#endif
2460#endif /* !CSH */
2461#endif /* !DOSISH */
2462#endif /* MACOS_TRADITIONAL */
93524f2b 2463 (void)do_open(PL_last_in_gv, (char*)SvPVX_const(tmpcmd), SvCUR(tmpcmd),
0d44d22b
NC
2464 FALSE, O_RDONLY, 0, Nullfp);
2465 fp = IoIFP(io);
2466#endif /* !VMS */
2467 LEAVE;
2468 return fp;
2469}
66610fdd
RGS
2470
2471/*
2472 * Local variables:
2473 * c-indentation-style: bsd
2474 * c-basic-offset: 4
2475 * indent-tabs-mode: t
2476 * End:
2477 *
37442d52
RGS
2478 * ex: set ts=8 sts=4 sw=4 noet:
2479 */