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a0d0e21e 1/* doio.c
a687059c 2 *
bc89e66f 3 * Copyright (c) 1991-2001, Larry Wall
a687059c 4 *
6e21c824
LW		 5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
a687059c 7 *
a0d0e21e
LW		 8 */
9
10/*
11 * "Far below them they saw the white waters pour into a foaming bowl, and
12 * then swirl darkly about a deep oval basin in the rocks, until they found
13 * their way out again through a narrow gate, and flowed away, fuming and
14 * chattering, into calmer and more level reaches."
a687059c
LW		 15 */
16
17#include "EXTERN.h"
864dbfa3 18#define PERL_IN_DOIO_C
a687059c
LW		 19#include "perl.h"
20
fe14fcc3 21#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
aec308ec 22#ifndef HAS_SEM
c2ab57d4 23#include <sys/ipc.h>
aec308ec 24#endif
fe14fcc3 25#ifdef HAS_MSG
c2ab57d4 26#include <sys/msg.h>
e5d73d77 27#endif
fe14fcc3 28#ifdef HAS_SHM
c2ab57d4 29#include <sys/shm.h>
a0d0e21e 30# ifndef HAS_SHMAT_PROTOTYPE
20ce7b12 31 extern Shmat_t shmat (int, char *, int);
a0d0e21e 32# endif
c2ab57d4 33#endif
e5d73d77 34#endif
c2ab57d4 35
663a0e37 36#ifdef I_UTIME
3730b96e 37# if defined(_MSC_VER) || defined(__MINGW32__)
3fe9a6f1 38# include <sys/utime.h>
39# else
40# include <utime.h>
41# endif
663a0e37 42#endif
85aff577 43
85aff577
CS		 44#ifdef O_EXCL
45# define OPEN_EXCL O_EXCL
46#else
47# define OPEN_EXCL 0
48#endif
a687059c 49
76121258 50#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
51#include <signal.h>
52#endif
53
a687059c 54bool
6170680b
IZ		 55Perl_do_open(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
56 int rawmode, int rawperm, PerlIO *supplied_fp)
57{
a567e93b
NIS		 58 return do_openn(gv, name, len, as_raw, rawmode, rawperm,
59 supplied_fp, (SV **) NULL, 0);
6170680b
IZ		 60}
61
62bool
63Perl_do_open9(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
64 int rawmode, int rawperm, PerlIO *supplied_fp, SV *svs,
65 I32 num_svs)
a687059c 66{
a567e93b
NIS		 67 return do_openn(gv, name, len, as_raw, rawmode, rawperm,
68 supplied_fp, &svs, 1);
69}
70
71bool
72Perl_do_openn(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
73 int rawmode, int rawperm, PerlIO *supplied_fp, SV **svp,
74 I32 num_svs)
75{
a0d0e21e 76 register IO *io = GvIOn(gv);
760ac839
LW		 77 PerlIO *saveifp = Nullfp;
78 PerlIO *saveofp = Nullfp;
ee518936 79 int savefd = -1;
9f37169a 80 char savetype = IoTYPE_CLOSED;
c07a80fd 81 int writing = 0;
760ac839 82 PerlIO *fp;
c07a80fd 83 int fd;
84 int result;
3500f679 85 bool was_fdopen = FALSE;
16fe6d59 86 bool in_raw = 0, in_crlf = 0, out_raw = 0, out_crlf = 0;
b931b1d9 87 char *type = NULL;
ee518936
NIS		 88 char mode[8]; /* stdio file mode ("r\0", "rb\0", "r+b\0" etc.) */
89 SV *namesv;
a687059c 90
b931b1d9 91 Zero(mode,sizeof(mode),char);
3280af22 92 PL_forkprocess = 1; /* assume true if no fork */
c07a80fd 93
b931b1d9 94 /* Collect default raw/crlf info from the op */
16fe6d59
GS		 95 if (PL_op && PL_op->op_type == OP_OPEN) {
96 /* set up disciplines */
97 U8 flags = PL_op->op_private;
98 in_raw = (flags & OPpOPEN_IN_RAW);
99 in_crlf = (flags & OPpOPEN_IN_CRLF);
100 out_raw = (flags & OPpOPEN_OUT_RAW);
101 out_crlf = (flags & OPpOPEN_OUT_CRLF);
102 }
103
b931b1d9 104 /* If currently open - close before we re-open */
a0d0e21e 105 if (IoIFP(io)) {
760ac839 106 fd = PerlIO_fileno(IoIFP(io));
ee518936
NIS		 107 if (IoTYPE(io) == IoTYPE_STD) {
108 /* This is a clone of one of STD* handles */
c2ab57d4 109 result = 0;
ee518936
NIS		 110 }
111 else if (fd >= 0 && fd <= PL_maxsysfd) {
112 /* This is one of the original STD* handles */
113 saveifp = IoIFP(io);
114 saveofp = IoOFP(io);
8990e307 115 savetype = IoTYPE(io);
ee518936
NIS		 116 savefd = fd;
117 result = 0;
6e21c824 118 }
50952442 119 else if (IoTYPE(io) == IoTYPE_PIPE)
3028581b 120 result = PerlProc_pclose(IoIFP(io));
8990e307
LW		 121 else if (IoIFP(io) != IoOFP(io)) {
122 if (IoOFP(io)) {
760ac839 123 result = PerlIO_close(IoOFP(io));
6170680b 124 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
c2ab57d4
LW		 125 }
126 else
760ac839 127 result = PerlIO_close(IoIFP(io));
a687059c 128 }
a687059c 129 else
760ac839 130 result = PerlIO_close(IoIFP(io));
ee518936
NIS		 131 if (result == EOF && fd > PL_maxsysfd) {
132 /* Why is this not Perl_warn*() call ? */
bf49b057 133 PerlIO_printf(Perl_error_log,
6170680b
IZ		 134 "Warning: unable to close filehandle %s properly.\n",
135 GvENAME(gv));
ee518936 136 }
8990e307 137 IoOFP(io) = IoIFP(io) = Nullfp;
a687059c 138 }
c07a80fd 139
140 if (as_raw) {
b931b1d9 141 /* sysopen style args, i.e. integer mode and permissions */
ee518936 142 STRLEN ix = 0;
4a7d1889 143 if (num_svs != 0) {
b94c04ac 144 Perl_croak(aTHX_ "panic: sysopen with multiple args");
4a7d1889 145 }
d1da7611
JH		 146 if (rawmode & (O_WRONLY|O_RDWR|O_CREAT
147#ifdef O_APPEND /* Not fully portable. */
148 |O_APPEND
149#endif
150#ifdef O_TRUNC /* Not fully portable. */
151 |O_TRUNC
152#endif
153 ))
b94c04ac 154 TAINT_PROPER("sysopen");
ee518936 155 mode[ix++] = '#'; /* Marker to openn to use numeric "sysopen" */
b931b1d9 156
09458382 157#if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE)
b94c04ac 158 rawmode |= O_LARGEFILE; /* Transparently largefiley. */
5ff3f7a4
GS		 159#endif
160
9d116dd7
JH		 161#ifndef O_ACCMODE
162#define O_ACCMODE 3 /* Assume traditional implementation */
163#endif
5ff3f7a4 164
9d116dd7
JH		 165 switch (result = rawmode & O_ACCMODE) {
166 case O_RDONLY:
50952442 167 IoTYPE(io) = IoTYPE_RDONLY;
9d116dd7
JH		 168 break;
169 case O_WRONLY:
50952442 170 IoTYPE(io) = IoTYPE_WRONLY;
9d116dd7
JH		 171 break;
172 case O_RDWR:
173 default:
50952442 174 IoTYPE(io) = IoTYPE_RDWR;
9d116dd7
JH		 175 break;
176 }
c07a80fd 177 writing = (result > 0);
9d116dd7 178
ee518936
NIS		 179 if (result == O_RDONLY) {
180 mode[ix++] = 'r';
181 }
360e5741 182#ifdef O_APPEND
ee518936
NIS		 183 else if (rawmode & O_APPEND) {
184 mode[ix++] = 'a';
185 if (result != O_WRONLY)
186 mode[ix++] = '+';
187 }
360e5741 188#endif
ee518936
NIS		 189 else {
190 if (result == O_WRONLY)
191 mode[ix++] = 'w';
16fe6d59 192 else {
ee518936
NIS		 193 mode[ix++] = 'r';
194 mode[ix++] = '+';
16fe6d59 195 }
c07a80fd 196 }
ee518936
NIS		 197 if (rawmode & O_BINARY)
198 mode[ix++] = 'b';
199 mode[ix] = '\0';
200
201 namesv = sv_2mortal(newSVpvn(name,strlen(name)));
202 num_svs = 1;
203 svp = &namesv;
1141d9f8 204 type = Nullch;
b94c04ac 205 fp = PerlIO_openn(aTHX_ type, mode, -1, rawmode, rawperm, NULL, num_svs, svp);
a687059c 206 }
c07a80fd 207 else {
b931b1d9 208 /* Regular (non-sys) open */
faecd977 209 char *oname = name;
faecd977 210 STRLEN olen = len;
b931b1d9
NIS		 211 char *tend;
212 int dodup = 0;
c07a80fd 213
faecd977 214 type = savepvn(name, len);
b931b1d9 215 tend = type+len;
faecd977 216 SAVEFREEPV(type);
b931b1d9
NIS		 217 /* Loose trailing white space */
218 while (tend > type && isSPACE(tend[-1]))
219 *tend-- = '\0';
6170680b 220 if (num_svs) {
b931b1d9 221 /* New style explict name, type is just mode and discipline/layer info */
fe9745bf 222 STRLEN l = 0;
f6c77cf1 223 name = SvOK(*svp) ? SvPV(*svp, l) : "";
faecd977
GS		 224 len = (I32)l;
225 name = savepvn(name, len);
226 SAVEFREEPV(name);
b931b1d9
NIS		 227 /*SUPPRESS 530*/
228 for (; isSPACE(*type); type++) ;
6170680b 229 }
faecd977 230 else {
faecd977 231 name = type;
b931b1d9 232 len = tend-type;
faecd977 233 }
6170680b 234 IoTYPE(io) = *type;
516a5887 235 if ((*type == IoTYPE_RDWR) && /* scary */
01a8ea99 236 (*(type+1) == IoTYPE_RDONLY || *(type+1) == IoTYPE_WRONLY) &&
516a5887 237 ((!num_svs || (tend > type+1 && tend[-1] != IoTYPE_PIPE)))) {
dd531b3b 238 TAINT_PROPER("open");
6170680b 239 mode[1] = *type++;
c07a80fd 240 writing = 1;
a687059c 241 }
c07a80fd 242
9f37169a 243 if (*type == IoTYPE_PIPE) {
b931b1d9
NIS		 244 if (num_svs) {
245 if (type[1] != IoTYPE_STD) {
246 unknown_desr:
247 Perl_croak(aTHX_ "Unknown open() mode '%.*s'", (int)olen, oname);
248 }
249 type++;
6170680b 250 }
c07a80fd 251 /*SUPPRESS 530*/
b931b1d9 252 for (type++; isSPACE(*type); type++) ;
faecd977 253 if (!num_svs) {
6170680b 254 name = type;
b931b1d9 255 len = tend-type;
faecd977 256 }
4a7d1889
NIS		 257 if (*name == '\0') {
258 /* command is missing 19990114 */
06eaf0bc 259 if (ckWARN(WARN_PIPE))
cea2e8a9 260 Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open");
06eaf0bc
GS		 261 errno = EPIPE;
262 goto say_false;
263 }
6170680b 264 if (strNE(name,"-") || num_svs)
c07a80fd 265 TAINT_ENV();
266 TAINT_PROPER("piped open");
b931b1d9 267 if (!num_svs && name[len-1] == '|') {
faecd977 268 name[--len] = '\0' ;
599cee73 269 if (ckWARN(WARN_PIPE))
9a7dcd9c 270 Perl_warner(aTHX_ WARN_PIPE, "Can't open bidirectional pipe");
7b8d334a 271 }
a1d180c4 272 mode[0] = 'w';
c07a80fd 273 writing = 1;
a1d180c4
NIS		 274 if (out_raw)
275 strcat(mode, "b");
276 else if (out_crlf)
277 strcat(mode, "t");
4a7d1889
NIS		 278 if (num_svs > 1) {
279 fp = PerlProc_popen_list(mode, num_svs, svp);
280 }
281 else {
282 fp = PerlProc_popen(name,mode);
283 }
c07a80fd 284 }
9f37169a 285 else if (*type == IoTYPE_WRONLY) {
c07a80fd 286 TAINT_PROPER("open");
6170680b 287 type++;
9f37169a
JH		 288 if (*type == IoTYPE_WRONLY) {
289 /* Two IoTYPE_WRONLYs in a row make for an IoTYPE_APPEND. */
50952442 290 mode[0] = IoTYPE(io) = IoTYPE_APPEND;
6170680b 291 type++;
a0d0e21e 292 }
ee518936 293 else {
c07a80fd 294 mode[0] = 'w';
ee518936 295 }
c07a80fd 296 writing = 1;
297
16fe6d59
GS		 298 if (out_raw)
299 strcat(mode, "b");
300 else if (out_crlf)
301 strcat(mode, "t");
302
6170680b 303 if (*type == '&') {
c07a80fd 304 duplicity:
305 dodup = 1;
e620cd72
NIS		 306 type++;
307 if (*type == '=') {
c07a80fd 308 dodup = 0;
e620cd72 309 type++;
4a7d1889 310 }
ee518936 311 if (!num_svs && !*type && supplied_fp) {
4a7d1889 312 /* "<+&" etc. is used by typemaps */
c07a80fd 313 fp = supplied_fp;
ee518936 314 }
a0d0e21e 315 else {
e620cd72
NIS		 316 if (num_svs > 1) {
317 Perl_croak(aTHX_ "More than one argument to '%c&' open",IoTYPE(io));
318 }
ee518936 319 if (num_svs && SvIOK(*svp)) {
e620cd72 320 fd = SvUV(*svp);
ee518936 321 }
e620cd72
NIS		 322 else if (isDIGIT(*type)) {
323 /*SUPPRESS 530*/
324 for (; isSPACE(*type); type++) ;
325 fd = atoi(type);
326 }
c07a80fd 327 else {
328 IO* thatio;
e620cd72
NIS		 329 if (num_svs) {
330 thatio = sv_2io(*svp);
331 }
332 else {
333 GV *thatgv;
334 /*SUPPRESS 530*/
335 for (; isSPACE(*type); type++) ;
336 thatgv = gv_fetchpv(type,FALSE,SVt_PVIO);
337 thatio = GvIO(thatgv);
338 }
c07a80fd 339 if (!thatio) {
6e21c824 340#ifdef EINVAL
c07a80fd 341 SETERRNO(EINVAL,SS$_IVCHAN);
6e21c824 342#endif
c07a80fd 343 goto say_false;
344 }
345 if (IoIFP(thatio)) {
54195c32 346 PerlIO *fp = IoIFP(thatio);
7211d486
JH		 347 /* Flush stdio buffer before dup. --mjd
348 * Unfortunately SEEK_CURing 0 seems to
349 * be optimized away on most platforms;
350 * only Solaris and Linux seem to flush
351 * on that. --jhi */
2c534a3f
NC		 352#ifdef USE_SFIO
353 /* sfio fails to clear error on next
354 sfwrite, contrary to documentation.
355 -- Nick Clark */
356 if (PerlIO_seek(fp, 0, SEEK_CUR) == -1)
357 PerlIO_clearerr(fp);
358#endif
7211d486
JH		 359 /* On the other hand, do all platforms
360 * take gracefully to flushing a read-only
361 * filehandle? Perhaps we should do
362 * fsetpos(src)+fgetpos(dst)? --nik */
363 PerlIO_flush(fp);
54195c32 364 fd = PerlIO_fileno(fp);
0759c907
JH		 365 /* When dup()ing STDIN, STDOUT or STDERR
366 * explicitly set appropriate access mode */
367 if (IoIFP(thatio) == PerlIO_stdout()
368 || IoIFP(thatio) == PerlIO_stderr())
369 IoTYPE(io) = IoTYPE_WRONLY;
370 else if (IoIFP(thatio) == PerlIO_stdin())
371 IoTYPE(io) = IoTYPE_RDONLY;
372 /* When dup()ing a socket, say result is
373 * one as well */
374 else if (IoTYPE(thatio) == IoTYPE_SOCKET)
50952442 375 IoTYPE(io) = IoTYPE_SOCKET;
c07a80fd 376 }
377 else
378 fd = -1;
a0d0e21e 379 }
fec02dd3 380 if (dodup)
3028581b 381 fd = PerlLIO_dup(fd);
3500f679
RS		 382 else
383 was_fdopen = TRUE;
ee518936 384 if (!num_svs)
1141d9f8 385 type = Nullch;
ee518936 386 if (!(fp = PerlIO_openn(aTHX_ type,mode,fd,0,0,NULL,num_svs,svp))) {
c07a80fd 387 if (dodup)
3028581b 388 PerlLIO_close(fd);
faecd977 389 }
c07a80fd 390 }
ee518936 391 } /* & */
c07a80fd 392 else {
4a7d1889
NIS		 393 if (num_svs > 1) {
394 Perl_croak(aTHX_ "More than one argument to '>' open");
395 }
c07a80fd 396 /*SUPPRESS 530*/
6170680b 397 for (; isSPACE(*type); type++) ;
b931b1d9
NIS		 398 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
399 /*SUPPRESS 530*/
400 type++;
760ac839 401 fp = PerlIO_stdout();
50952442 402 IoTYPE(io) = IoTYPE_STD;
c07a80fd 403 }
404 else {
ee518936
NIS		 405 if (!num_svs) {
406 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
407 num_svs = 1;
408 svp = &namesv;
1141d9f8 409 type = Nullch;
ee518936 410 }
6e60e805 411 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
c07a80fd 412 }
ee518936 413 } /* !& */
bf38876a 414 }
9f37169a 415 else if (*type == IoTYPE_RDONLY) {
4a7d1889
NIS		 416 if (num_svs > 1) {
417 Perl_croak(aTHX_ "More than one argument to '<' open");
418 }
c07a80fd 419 /*SUPPRESS 530*/
6170680b 420 for (type++; isSPACE(*type); type++) ;
bf38876a 421 mode[0] = 'r';
16fe6d59
GS		 422 if (in_raw)
423 strcat(mode, "b");
424 else if (in_crlf)
425 strcat(mode, "t");
426
6170680b 427 if (*type == '&') {
bf38876a 428 goto duplicity;
6170680b 429 }
b931b1d9
NIS		 430 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
431 /*SUPPRESS 530*/
432 type++;
760ac839 433 fp = PerlIO_stdin();
50952442 434 IoTYPE(io) = IoTYPE_STD;
a687059c 435 }
ee518936
NIS		 436 else {
437 if (!num_svs) {
438 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
439 num_svs = 1;
440 svp = &namesv;
1141d9f8 441 type = Nullch;
ee518936 442 }
6e60e805 443 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
ee518936 444 }
a687059c 445 }
b931b1d9
NIS		 446 else if ((num_svs && type[0] == IoTYPE_STD && type[1] == IoTYPE_PIPE) ||
447 (!num_svs && tend > type+1 && tend[-1] == IoTYPE_PIPE)) {
6170680b 448 if (num_svs) {
b931b1d9 449 type += 2; /* skip over '-|' */
6170680b
IZ		 450 }
451 else {
b931b1d9
NIS		 452 *--tend = '\0';
453 while (tend > type && isSPACE(tend[-1]))
454 *--tend = '\0';
6170680b
IZ		 455 /*SUPPRESS 530*/
456 for (; isSPACE(*type); type++) ;
457 name = type;
b931b1d9 458 len = tend-type;
6170680b 459 }
4a7d1889
NIS		 460 if (*name == '\0') {
461 /* command is missing 19990114 */
06eaf0bc 462 if (ckWARN(WARN_PIPE))
cea2e8a9 463 Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open");
06eaf0bc
GS		 464 errno = EPIPE;
465 goto say_false;
466 }
6170680b 467 if (strNE(name,"-") || num_svs)
79072805
LW		 468 TAINT_ENV();
469 TAINT_PROPER("piped open");
a1d180c4
NIS		 470 mode[0] = 'r';
471 if (in_raw)
472 strcat(mode, "b");
473 else if (in_crlf)
474 strcat(mode, "t");
4a7d1889
NIS		 475 if (num_svs > 1) {
476 fp = PerlProc_popen_list(mode,num_svs,svp);
477 }
e620cd72 478 else {
4a7d1889
NIS		 479 fp = PerlProc_popen(name,mode);
480 }
50952442 481 IoTYPE(io) = IoTYPE_PIPE;
a687059c
LW		 482 }
483 else {
6170680b
IZ		 484 if (num_svs)
485 goto unknown_desr;
486 name = type;
50952442 487 IoTYPE(io) = IoTYPE_RDONLY;
99b89507
LW		 488 /*SUPPRESS 530*/
489 for (; isSPACE(*name); name++) ;
88b61e10
NIS		 490 mode[0] = 'r';
491 if (in_raw)
492 strcat(mode, "b");
493 else if (in_crlf)
494 strcat(mode, "t");
a687059c 495 if (strEQ(name,"-")) {
760ac839 496 fp = PerlIO_stdin();
50952442 497 IoTYPE(io) = IoTYPE_STD;
a687059c 498 }
16fe6d59 499 else {
ee518936
NIS		 500 if (!num_svs) {
501 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
502 num_svs = 1;
503 svp = &namesv;
1141d9f8 504 type = Nullch;
ee518936 505 }
6e60e805 506 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
16fe6d59 507 }
a687059c
LW		 508 }
509 }
bee1dbe2 510 if (!fp) {
50952442 511 if (ckWARN(WARN_NEWLINE) && IoTYPE(io) == IoTYPE_RDONLY && strchr(name, '\n'))
cea2e8a9 512 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "open");
6e21c824 513 goto say_false;
bee1dbe2 514 }
a00b5bd3
NIS		 515
516 if (ckWARN(WARN_IO)) {
517 if ((IoTYPE(io) == IoTYPE_RDONLY) &&
518 (fp == PerlIO_stdout() || fp == PerlIO_stderr())) {
c5e2d979
JH		 519 Perl_warner(aTHX_ WARN_IO,
520 "Filehandle STD%s opened only for input",
521 (fp == PerlIO_stdout()) ? "OUT" : "ERR");
a00b5bd3 522 }
ee518936 523 else if ((IoTYPE(io) == IoTYPE_WRONLY) && fp == PerlIO_stdin()) {
c5e2d979
JH		 524 Perl_warner(aTHX_ WARN_IO,
525 "Filehandle STDIN opened only for output");
a00b5bd3
NIS		 526 }
527 }
528
f6c77cf1
NIS		 529 if (IoTYPE(io) && IoTYPE(io) != IoTYPE_PIPE && IoTYPE(io) != IoTYPE_STD &&
530 /* FIXME: This next term is a hack to avoid fileno on PerlIO::Scalar */
531 !(num_svs && SvROK(*svp))) {
3280af22 532 if (PerlLIO_fstat(PerlIO_fileno(fp),&PL_statbuf) < 0) {
760ac839 533 (void)PerlIO_close(fp);
6e21c824 534 goto say_false;
a687059c 535 }
3280af22 536 if (S_ISSOCK(PL_statbuf.st_mode))
50952442 537 IoTYPE(io) = IoTYPE_SOCKET; /* in case a socket was passed in to us */
99b89507
LW		 538#ifdef HAS_SOCKET
539 else if (
c623bd54 540#ifdef S_IFMT
3280af22 541 !(PL_statbuf.st_mode & S_IFMT)
99b89507 542#else
b28d0864 543 !PL_statbuf.st_mode
99b89507 544#endif
0759c907
JH		 545 && IoTYPE(io) != IoTYPE_WRONLY /* Dups of STD* filehandles already have */
546 && IoTYPE(io) != IoTYPE_RDONLY /* type so they aren't marked as sockets */
547 ) { /* on OS's that return 0 on fstat()ed pipe */
96827780
MB		 548 char tmpbuf[256];
549 Sock_size_t buflen = sizeof tmpbuf;
3028581b 550 if (PerlSock_getsockname(PerlIO_fileno(fp), (struct sockaddr *)tmpbuf,
d574b85e
CS		 551 &buflen) >= 0
552 || errno != ENOTSOCK)
50952442 553 IoTYPE(io) = IoTYPE_SOCKET; /* some OS's return 0 on fstat()ed socket */
99b89507
LW		 554 /* but some return 0 for streams too, sigh */
555 }
bf38876a 556#endif
a687059c 557 }
6e21c824 558 if (saveifp) { /* must use old fp? */
f5b9d040 559 /* If fd is less that PL_maxsysfd i.e. STDIN..STDERR
24c23ab4 560 then dup the new fileno down
f5b9d040 561 */
6e60e805 562 fd = PerlIO_fileno(fp);
6e21c824 563 if (saveofp) {
f5b9d040 564 PerlIO_flush(saveofp); /* emulate PerlIO_close() */
6e21c824 565 if (saveofp != saveifp) { /* was a socket? */
760ac839 566 PerlIO_close(saveofp);
6e21c824
LW		 567 }
568 }
6e60e805 569 if (savefd != fd) {
d8a83dd3 570 Pid_t pid;
79072805 571 SV *sv;
bd4a5668
NIS		 572 if (PerlLIO_dup2(fd, savefd) < 0) {
573 (void)PerlIO_close(fp);
574 goto say_false;
575 }
d082dcd6 576#ifdef VMS
6e60e805 577 if (savefd != PerlIO_fileno(PerlIO_stdin())) {
d082dcd6 578 char newname[FILENAME_MAX+1];
a15cef0c 579 if (PerlIO_getname(fp, newname)) {
fd8cd3a3
DS		 580 if (fd == PerlIO_fileno(PerlIO_stdout())) Perl_vmssetuserlnm(aTHX_ "SYS$OUTPUT", newname);
581 if (fd == PerlIO_fileno(PerlIO_stderr())) Perl_vmssetuserlnm(aTHX_ "SYS$ERROR", newname);
d082dcd6
JH		 582 }
583 }
584#endif
4755096e 585 LOCK_FDPID_MUTEX;
6e60e805 586 sv = *av_fetch(PL_fdpid,fd,TRUE);
a0d0e21e 587 (void)SvUPGRADE(sv, SVt_IV);
463ee0b2
LW		 588 pid = SvIVX(sv);
589 SvIVX(sv) = 0;
6e60e805 590 sv = *av_fetch(PL_fdpid,savefd,TRUE);
4755096e 591 UNLOCK_FDPID_MUTEX;
a0d0e21e 592 (void)SvUPGRADE(sv, SVt_IV);
463ee0b2 593 SvIVX(sv) = pid;
3500f679
RS		 594 if (!was_fdopen)
595 PerlIO_close(fp);
6e21c824
LW		 596 }
597 fp = saveifp;
760ac839 598 PerlIO_clearerr(fp);
6e21c824 599 }
a0d0e21e 600#if defined(HAS_FCNTL) && defined(F_SETFD)
a8710ca1
GS		 601 {
602 int save_errno = errno;
603 fd = PerlIO_fileno(fp);
604 fcntl(fd,F_SETFD,fd > PL_maxsysfd); /* can change errno */
605 errno = save_errno;
606 }
1462b684 607#endif
8990e307 608 IoIFP(io) = fp;
b931b1d9 609
684bef36 610 IoFLAGS(io) &= ~IOf_NOLINE;
bf38876a 611 if (writing) {
50952442 612 if (IoTYPE(io) == IoTYPE_SOCKET
ee518936 613 || (IoTYPE(io) == IoTYPE_WRONLY && S_ISCHR(PL_statbuf.st_mode)) ) {
b931b1d9 614 mode[0] = 'w';
1141d9f8 615 if (!(IoOFP(io) = PerlIO_openn(aTHX_ type,mode,PerlIO_fileno(fp),0,0,NULL,num_svs,svp))) {
760ac839 616 PerlIO_close(fp);
8990e307 617 IoIFP(io) = Nullfp;
6e21c824 618 goto say_false;
fe14fcc3 619 }
1462b684
LW		 620 }
621 else
8990e307 622 IoOFP(io) = fp;
bf38876a 623 }
a687059c 624 return TRUE;
6e21c824
LW		 625
626say_false:
8990e307
LW		 627 IoIFP(io) = saveifp;
628 IoOFP(io) = saveofp;
629 IoTYPE(io) = savetype;
6e21c824 630 return FALSE;
a687059c
LW		 631}
632
760ac839 633PerlIO *
864dbfa3 634Perl_nextargv(pTHX_ register GV *gv)
a687059c 635{
79072805 636 register SV *sv;
99b89507 637#ifndef FLEXFILENAMES
c623bd54
LW		 638 int filedev;
639 int fileino;
99b89507 640#endif
761237fe
JB		 641 Uid_t fileuid;
642 Gid_t filegid;
18708f5a 643 IO *io = GvIOp(gv);
fe14fcc3 644
3280af22
NIS		 645 if (!PL_argvoutgv)
646 PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
18708f5a
GS		 647 if (io && (IoFLAGS(io) & IOf_ARGV) && (IoFLAGS(io) & IOf_START)) {
648 IoFLAGS(io) &= ~IOf_START;
7a1c5554
GS		 649 if (PL_inplace) {
650 if (!PL_argvout_stack)
651 PL_argvout_stack = newAV();
18708f5a 652 av_push(PL_argvout_stack, SvREFCNT_inc(PL_defoutgv));
7a1c5554 653 }
18708f5a 654 }
3280af22
NIS		 655 if (PL_filemode & (S_ISUID|S_ISGID)) {
656 PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
fe14fcc3 657#ifdef HAS_FCHMOD
3280af22 658 (void)fchmod(PL_lastfd,PL_filemode);
fe14fcc3 659#else
b28d0864 660 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
fe14fcc3
LW		 661#endif
662 }
3280af22 663 PL_filemode = 0;
79072805 664 while (av_len(GvAV(gv)) >= 0) {
85aff577 665 STRLEN oldlen;
79072805 666 sv = av_shift(GvAV(gv));
8990e307 667 SAVEFREESV(sv);
79072805
LW		 668 sv_setsv(GvSV(gv),sv);
669 SvSETMAGIC(GvSV(gv));
3280af22 670 PL_oldname = SvPVx(GvSV(gv), oldlen);
9d116dd7 671 if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) {
3280af22 672 if (PL_inplace) {
79072805 673 TAINT_PROPER("inplace open");
3280af22 674 if (oldlen == 1 && *PL_oldname == '-') {
4633a7c4 675 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
a0d0e21e 676 return IoIFP(GvIOp(gv));
c623bd54 677 }
99b89507 678#ifndef FLEXFILENAMES
b28d0864
NIS		 679 filedev = PL_statbuf.st_dev;
680 fileino = PL_statbuf.st_ino;
99b89507 681#endif
3280af22
NIS		 682 PL_filemode = PL_statbuf.st_mode;
683 fileuid = PL_statbuf.st_uid;
684 filegid = PL_statbuf.st_gid;
685 if (!S_ISREG(PL_filemode)) {
0453d815
PM		 686 if (ckWARN_d(WARN_INPLACE))
687 Perl_warner(aTHX_ WARN_INPLACE,
688 "Can't do inplace edit: %s is not a regular file",
689 PL_oldname );
79072805 690 do_close(gv,FALSE);
c623bd54
LW		 691 continue;
692 }
3280af22
NIS		 693 if (*PL_inplace) {
694 char *star = strchr(PL_inplace, '*');
2d259d92 695 if (star) {
3280af22 696 char *begin = PL_inplace;
2d259d92
CK		 697 sv_setpvn(sv, "", 0);
698 do {
699 sv_catpvn(sv, begin, star - begin);
3280af22 700 sv_catpvn(sv, PL_oldname, oldlen);
2d259d92
CK		 701 begin = ++star;
702 } while ((star = strchr(begin, '*')));
3d66d7bb
GS		 703 if (*begin)
704 sv_catpv(sv,begin);
2d259d92
CK		 705 }
706 else {
3280af22 707 sv_catpv(sv,PL_inplace);
2d259d92 708 }
c623bd54 709#ifndef FLEXFILENAMES
b28d0864
NIS		 710 if (PerlLIO_stat(SvPVX(sv),&PL_statbuf) >= 0
711 && PL_statbuf.st_dev == filedev
712 && PL_statbuf.st_ino == fileino
39e571d4
LM		 713#ifdef DJGPP
714 || (_djstat_fail_bits & _STFAIL_TRUENAME)!=0
715#endif
f248d071
GS		 716 )
717 {
718 if (ckWARN_d(WARN_INPLACE))
719 Perl_warner(aTHX_ WARN_INPLACE,
720 "Can't do inplace edit: %s would not be unique",
721 SvPVX(sv));
79072805 722 do_close(gv,FALSE);
c623bd54
LW		 723 continue;
724 }
725#endif
fe14fcc3 726#ifdef HAS_RENAME
d308986b 727#if !defined(DOSISH) && !defined(__CYGWIN__)
3280af22 728 if (PerlLIO_rename(PL_oldname,SvPVX(sv)) < 0) {
0453d815 729 if (ckWARN_d(WARN_INPLACE))
a1d180c4 730 Perl_warner(aTHX_ WARN_INPLACE,
0453d815
PM		 731 "Can't rename %s to %s: %s, skipping file",
732 PL_oldname, SvPVX(sv), Strerror(errno) );
79072805 733 do_close(gv,FALSE);
c623bd54
LW		 734 continue;
735 }
a687059c 736#else
79072805 737 do_close(gv,FALSE);
3028581b 738 (void)PerlLIO_unlink(SvPVX(sv));
b28d0864 739 (void)PerlLIO_rename(PL_oldname,SvPVX(sv));
9d116dd7 740 do_open(gv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,O_RDONLY,0,Nullfp);
55497cff 741#endif /* DOSISH */
ff8e2863 742#else
463ee0b2 743 (void)UNLINK(SvPVX(sv));
b28d0864 744 if (link(PL_oldname,SvPVX(sv)) < 0) {
0453d815
PM		 745 if (ckWARN_d(WARN_INPLACE))
746 Perl_warner(aTHX_ WARN_INPLACE,
747 "Can't rename %s to %s: %s, skipping file",
748 PL_oldname, SvPVX(sv), Strerror(errno) );
79072805 749 do_close(gv,FALSE);
c623bd54
LW		 750 continue;
751 }
b28d0864 752 (void)UNLINK(PL_oldname);
a687059c
LW		 753#endif
754 }
755 else {
a8c18271 756#if !defined(DOSISH) && !defined(AMIGAOS)
edc7bc49 757# ifndef VMS /* Don't delete; use automatic file versioning */
3280af22 758 if (UNLINK(PL_oldname) < 0) {
0453d815
PM		 759 if (ckWARN_d(WARN_INPLACE))
760 Perl_warner(aTHX_ WARN_INPLACE,
761 "Can't remove %s: %s, skipping file",
762 PL_oldname, Strerror(errno) );
79072805 763 do_close(gv,FALSE);
fe14fcc3
LW		 764 continue;
765 }
edc7bc49 766# endif
ff8e2863 767#else
cea2e8a9 768 Perl_croak(aTHX_ "Can't do inplace edit without backup");
ff8e2863 769#endif
a687059c
LW		 770 }
771
3280af22
NIS		 772 sv_setpvn(sv,">",!PL_inplace);
773 sv_catpvn(sv,PL_oldname,oldlen);
748a9306 774 SETERRNO(0,0); /* in case sprintf set errno */
4119ab01
HM		 775#ifdef VMS
776 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
18708f5a 777 O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp))
4119ab01 778#else
3280af22 779 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
18708f5a 780 O_WRONLY|O_CREAT|OPEN_EXCL,0666,Nullfp))
4119ab01 781#endif
18708f5a 782 {
0453d815
PM		 783 if (ckWARN_d(WARN_INPLACE))
784 Perl_warner(aTHX_ WARN_INPLACE, "Can't do inplace edit on %s: %s",
785 PL_oldname, Strerror(errno) );
79072805 786 do_close(gv,FALSE);
fe14fcc3
LW		 787 continue;
788 }
3280af22
NIS		 789 setdefout(PL_argvoutgv);
790 PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv)));
791 (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf);
fe14fcc3 792#ifdef HAS_FCHMOD
3280af22 793 (void)fchmod(PL_lastfd,PL_filemode);
a687059c 794#else
3e3baf6d
TB		 795# if !(defined(WIN32) && defined(__BORLANDC__))
796 /* Borland runtime creates a readonly file! */
b28d0864 797 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
3e3baf6d 798# endif
a687059c 799#endif
3280af22 800 if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) {
fe14fcc3 801#ifdef HAS_FCHOWN
3280af22 802 (void)fchown(PL_lastfd,fileuid,filegid);
a687059c 803#else
fe14fcc3 804#ifdef HAS_CHOWN
b28d0864 805 (void)PerlLIO_chown(PL_oldname,fileuid,filegid);
a687059c 806#endif
b1248f16 807#endif
fe14fcc3 808 }
a687059c 809 }
a0d0e21e 810 return IoIFP(GvIOp(gv));
a687059c 811 }
4d61ec05 812 else {
4d61ec05 813 if (ckWARN_d(WARN_INPLACE)) {
6af84f9f
GS		 814 int eno = errno;
815 if (PerlLIO_stat(PL_oldname, &PL_statbuf) >= 0
816 && !S_ISREG(PL_statbuf.st_mode))
817 {
4d61ec05
GS		 818 Perl_warner(aTHX_ WARN_INPLACE,
819 "Can't do inplace edit: %s is not a regular file",
9a7dcd9c 820 PL_oldname);
6af84f9f 821 }
4d61ec05 822 else
9a7dcd9c 823 Perl_warner(aTHX_ WARN_INPLACE, "Can't open %s: %s",
6af84f9f 824 PL_oldname, Strerror(eno));
4d61ec05
GS		 825 }
826 }
a687059c 827 }
18708f5a
GS		 828 if (io && (IoFLAGS(io) & IOf_ARGV))
829 IoFLAGS(io) |= IOf_START;
3280af22
NIS		 830 if (PL_inplace) {
831 (void)do_close(PL_argvoutgv,FALSE);
7a1c5554
GS		 832 if (io && (IoFLAGS(io) & IOf_ARGV)
833 && PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0)
834 {
18708f5a
GS		 835 GV *oldout = (GV*)av_pop(PL_argvout_stack);
836 setdefout(oldout);
837 SvREFCNT_dec(oldout);
838 return Nullfp;
839 }
4633a7c4 840 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
a687059c
LW		 841 }
842 return Nullfp;
843}
844
fe14fcc3 845#ifdef HAS_PIPE
afd9f252 846void
864dbfa3 847Perl_do_pipe(pTHX_ SV *sv, GV *rgv, GV *wgv)
afd9f252 848{
79072805
LW		 849 register IO *rstio;
850 register IO *wstio;
afd9f252
LW		 851 int fd[2];
852
79072805 853 if (!rgv)
afd9f252 854 goto badexit;
79072805 855 if (!wgv)
afd9f252
LW		 856 goto badexit;
857
a0d0e21e
LW		 858 rstio = GvIOn(rgv);
859 wstio = GvIOn(wgv);
afd9f252 860
a0d0e21e 861 if (IoIFP(rstio))
79072805 862 do_close(rgv,FALSE);
a0d0e21e 863 if (IoIFP(wstio))
79072805 864 do_close(wgv,FALSE);
afd9f252 865
3028581b 866 if (PerlProc_pipe(fd) < 0)
afd9f252 867 goto badexit;
760ac839
LW		 868 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
869 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
8990e307 870 IoIFP(wstio) = IoOFP(wstio);
50952442
JH		 871 IoTYPE(rstio) = IoTYPE_RDONLY;
872 IoTYPE(wstio) = IoTYPE_WRONLY;
8990e307 873 if (!IoIFP(rstio) || !IoOFP(wstio)) {
760ac839 874 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
3028581b 875 else PerlLIO_close(fd[0]);
760ac839 876 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
3028581b 877 else PerlLIO_close(fd[1]);
fe14fcc3
LW		 878 goto badexit;
879 }
afd9f252 880
3280af22 881 sv_setsv(sv,&PL_sv_yes);
afd9f252
LW		 882 return;
883
884badexit:
3280af22 885 sv_setsv(sv,&PL_sv_undef);
afd9f252
LW		 886 return;
887}
b1248f16 888#endif
afd9f252 889
517844ec 890/* explicit renamed to avoid C++ conflict -- kja */
a687059c 891bool
864dbfa3 892Perl_do_close(pTHX_ GV *gv, bool not_implicit)
a687059c 893{
1193dd27
IZ		 894 bool retval;
895 IO *io;
a687059c 896
79072805 897 if (!gv)
3280af22 898 gv = PL_argvgv;
a0d0e21e 899 if (!gv || SvTYPE(gv) != SVt_PVGV) {
1d2dff63
GS		 900 if (not_implicit)
901 SETERRNO(EBADF,SS$_IVCHAN);
c2ab57d4 902 return FALSE;
99b89507 903 }
79072805
LW		 904 io = GvIO(gv);
905 if (!io) { /* never opened */
1d2dff63 906 if (not_implicit) {
2dd78f96
JH		 907 if (ckWARN(WARN_UNOPENED)) /* no check for closed here */
908 report_evil_fh(gv, io, PL_op->op_type);
1d2dff63
GS		 909 SETERRNO(EBADF,SS$_IVCHAN);
910 }
a687059c
LW		 911 return FALSE;
912 }
f2b5be74 913 retval = io_close(io, not_implicit);
517844ec 914 if (not_implicit) {
1193dd27
IZ		 915 IoLINES(io) = 0;
916 IoPAGE(io) = 0;
917 IoLINES_LEFT(io) = IoPAGE_LEN(io);
918 }
50952442 919 IoTYPE(io) = IoTYPE_CLOSED;
1193dd27
IZ		 920 return retval;
921}
922
923bool
f2b5be74 924Perl_io_close(pTHX_ IO *io, bool not_implicit)
1193dd27
IZ		 925{
926 bool retval = FALSE;
927 int status;
928
8990e307 929 if (IoIFP(io)) {
50952442 930 if (IoTYPE(io) == IoTYPE_PIPE) {
3028581b 931 status = PerlProc_pclose(IoIFP(io));
f2b5be74
GS		 932 if (not_implicit) {
933 STATUS_NATIVE_SET(status);
934 retval = (STATUS_POSIX == 0);
935 }
936 else {
937 retval = (status != -1);
938 }
a687059c 939 }
50952442 940 else if (IoTYPE(io) == IoTYPE_STD)
a687059c
LW		 941 retval = TRUE;
942 else {
8990e307 943 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
760ac839
LW		 944 retval = (PerlIO_close(IoOFP(io)) != EOF);
945 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
c2ab57d4
LW		 946 }
947 else
760ac839 948 retval = (PerlIO_close(IoIFP(io)) != EOF);
a687059c 949 }
8990e307 950 IoOFP(io) = IoIFP(io) = Nullfp;
79072805 951 }
f2b5be74 952 else if (not_implicit) {
20408e3c
GS		 953 SETERRNO(EBADF,SS$_IVCHAN);
954 }
1193dd27 955
a687059c
LW		 956 return retval;
957}
958
959bool
864dbfa3 960Perl_do_eof(pTHX_ GV *gv)
a687059c 961{
79072805 962 register IO *io;
a687059c
LW		 963 int ch;
964
79072805 965 io = GvIO(gv);
a687059c 966
79072805 967 if (!io)
a687059c 968 return TRUE;
a00b5bd3 969 else if (ckWARN(WARN_IO) && (IoTYPE(io) == IoTYPE_WRONLY))
af8c498a 970 {
2dd78f96 971 /* integrate to report_evil_fh()? */
a1d180c4 972 char *name = NULL;
2dd78f96
JH		 973 if (isGV(gv)) {
974 SV* sv = sv_newmortal();
975 gv_efullname4(sv, gv, Nullch, FALSE);
976 name = SvPV_nolen(sv);
977 }
978 if (name && *name)
979 Perl_warner(aTHX_ WARN_IO,
980 "Filehandle %s opened only for output", name);
981 else
982 Perl_warner(aTHX_ WARN_IO,
983 "Filehandle opened only for output");
af8c498a 984 }
a687059c 985
8990e307 986 while (IoIFP(io)) {
a687059c 987
760ac839 988 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
a20bf0c3 989 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
760ac839
LW		 990 return FALSE; /* this is the most usual case */
991 }
a687059c 992
760ac839 993 ch = PerlIO_getc(IoIFP(io));
a687059c 994 if (ch != EOF) {
760ac839 995 (void)PerlIO_ungetc(IoIFP(io),ch);
a687059c
LW		 996 return FALSE;
997 }
fab3f3a7 998
760ac839 999 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
a20bf0c3
JH		 1000 if (PerlIO_get_cnt(IoIFP(io)) < -1)
1001 PerlIO_set_cnt(IoIFP(io),-1);
760ac839 1002 }
533c011a 1003 if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
3280af22 1004 if (!nextargv(PL_argvgv)) /* get another fp handy */
a687059c
LW		 1005 return TRUE;
1006 }
1007 else
1008 return TRUE; /* normal fp, definitely end of file */
1009 }
1010 return TRUE;
1011}
1012
5ff3f7a4 1013Off_t
864dbfa3 1014Perl_do_tell(pTHX_ GV *gv)
a687059c 1015{
9c5ffd7c 1016 register IO *io = 0;
96e4d5b1 1017 register PerlIO *fp;
a687059c 1018
96e4d5b1 1019 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
bee1dbe2 1020#ifdef ULTRIX_STDIO_BOTCH
96e4d5b1 1021 if (PerlIO_eof(fp))
1022 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
bee1dbe2 1023#endif
8903cb82 1024 return PerlIO_tell(fp);
96e4d5b1 1025 }
411caa50
JH		 1026 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1027 report_evil_fh(gv, io, PL_op->op_type);
748a9306 1028 SETERRNO(EBADF,RMS$_IFI);
5ff3f7a4 1029 return (Off_t)-1;
a687059c
LW		 1030}
1031
1032bool
864dbfa3 1033Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence)
a687059c 1034{
9c5ffd7c 1035 register IO *io = 0;
137443ea 1036 register PerlIO *fp;
a687059c 1037
137443ea 1038 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
bee1dbe2 1039#ifdef ULTRIX_STDIO_BOTCH
137443ea 1040 if (PerlIO_eof(fp))
1041 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
bee1dbe2 1042#endif
8903cb82 1043 return PerlIO_seek(fp, pos, whence) >= 0;
137443ea 1044 }
411caa50
JH		 1045 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1046 report_evil_fh(gv, io, PL_op->op_type);
748a9306 1047 SETERRNO(EBADF,RMS$_IFI);
a687059c
LW		 1048 return FALSE;
1049}
1050
97cc44eb 1051Off_t
864dbfa3 1052Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence)
8903cb82 1053{
9c5ffd7c 1054 register IO *io = 0;
8903cb82 1055 register PerlIO *fp;
1056
1057 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
3028581b 1058 return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
411caa50
JH		 1059 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1060 report_evil_fh(gv, io, PL_op->op_type);
8903cb82 1061 SETERRNO(EBADF,RMS$_IFI);
d9b3e12d 1062 return (Off_t)-1;
8903cb82 1063}
1064
6ff81951 1065int
16fe6d59
GS		 1066Perl_mode_from_discipline(pTHX_ SV *discp)
1067{
1068 int mode = O_BINARY;
1069 if (discp) {
1070 STRLEN len;
1071 char *s = SvPV(discp,len);
1072 while (*s) {
1073 if (*s == ':') {
1074 switch (s[1]) {
1075 case 'r':
1076 if (len > 3 && strnEQ(s+1, "raw", 3)
1077 && (!s[4] || s[4] == ':' || isSPACE(s[4])))
1078 {
1079 mode = O_BINARY;
1080 s += 4;
1081 len -= 4;
1082 break;
1083 }
1084 /* FALL THROUGH */
1085 case 'c':
1086 if (len > 4 && strnEQ(s+1, "crlf", 4)
1087 && (!s[5] || s[5] == ':' || isSPACE(s[5])))
1088 {
1089 mode = O_TEXT;
1090 s += 5;
1091 len -= 5;
1092 break;
1093 }
1094 /* FALL THROUGH */
1095 default:
1096 goto fail_discipline;
1097 }
1098 }
1099 else if (isSPACE(*s)) {
1100 ++s;
1101 --len;
1102 }
1103 else {
1104 char *end;
1105fail_discipline:
1106 end = strchr(s+1, ':');
1107 if (!end)
1108 end = s+len;
60382766 1109#ifndef PERLIO_LAYERS
16fe6d59 1110 Perl_croak(aTHX_ "Unknown discipline '%.*s'", end-s, s);
60382766
NIS		 1111#else
1112 s = end;
1113#endif
16fe6d59
GS		 1114 }
1115 }
1116 }
1117 return mode;
1118}
1119
1120int
1121Perl_do_binmode(pTHX_ PerlIO *fp, int iotype, int mode)
6ff81951 1122{
60382766
NIS		 1123 /* The old body of this is now in non-LAYER part of perlio.c
1124 * This is a stub for any XS code which might have been calling it.
1125 */
1126 char *name = (O_BINARY != O_TEXT && !(mode & O_BINARY)) ? ":crlf" : ":raw";
1127 return PerlIO_binmode(aTHX_ fp, iotype, mode, name);
6ff81951
GS		 1128}
1129
a0d0e21e 1130#if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
c2ab57d4 1131 /* code courtesy of William Kucharski */
fe14fcc3 1132#define HAS_CHSIZE
6eb13c3b 1133
517844ec 1134I32 my_chsize(fd, length)
79072805 1135I32 fd; /* file descriptor */
85e6fe83 1136Off_t length; /* length to set file to */
6eb13c3b 1137{
6eb13c3b
LW		 1138 struct flock fl;
1139 struct stat filebuf;
1140
3028581b 1141 if (PerlLIO_fstat(fd, &filebuf) < 0)
6eb13c3b
LW		 1142 return -1;
1143
1144 if (filebuf.st_size < length) {
1145
1146 /* extend file length */
1147
3028581b 1148 if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0)
6eb13c3b
LW		 1149 return -1;
1150
1151 /* write a "0" byte */
1152
3028581b 1153 if ((PerlLIO_write(fd, "", 1)) != 1)
6eb13c3b
LW		 1154 return -1;
1155 }
1156 else {
1157 /* truncate length */
1158
1159 fl.l_whence = 0;
1160 fl.l_len = 0;
1161 fl.l_start = length;
a0d0e21e 1162 fl.l_type = F_WRLCK; /* write lock on file space */
6eb13c3b
LW		 1163
1164 /*
a0d0e21e 1165 * This relies on the UNDOCUMENTED F_FREESP argument to
6eb13c3b
LW		 1166 * fcntl(2), which truncates the file so that it ends at the
1167 * position indicated by fl.l_start.
1168 *
1169 * Will minor miracles never cease?
1170 */
1171
a0d0e21e 1172 if (fcntl(fd, F_FREESP, &fl) < 0)
6eb13c3b
LW		 1173 return -1;
1174
1175 }
1176
1177 return 0;
1178}
a0d0e21e 1179#endif /* F_FREESP */
ff8e2863 1180
a687059c 1181bool
864dbfa3 1182Perl_do_print(pTHX_ register SV *sv, PerlIO *fp)
a687059c
LW		 1183{
1184 register char *tmps;
463ee0b2 1185 STRLEN len;
a687059c 1186
79072805
LW		 1187 /* assuming fp is checked earlier */
1188 if (!sv)
1189 return TRUE;
3280af22 1190 if (PL_ofmt) {
8990e307 1191 if (SvGMAGICAL(sv))
79072805 1192 mg_get(sv);
463ee0b2 1193 if (SvIOK(sv) && SvIVX(sv) != 0) {
65202027 1194 PerlIO_printf(fp, PL_ofmt, (NV)SvIVX(sv));
760ac839 1195 return !PerlIO_error(fp);
79072805 1196 }
463ee0b2 1197 if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
79072805 1198 || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
3280af22 1199 PerlIO_printf(fp, PL_ofmt, SvNVX(sv));
760ac839 1200 return !PerlIO_error(fp);
79072805 1201 }
a687059c 1202 }
79072805
LW		 1203 switch (SvTYPE(sv)) {
1204 case SVt_NULL:
411caa50
JH		 1205 if (ckWARN(WARN_UNINITIALIZED))
1206 report_uninit();
ff8e2863 1207 return TRUE;
79072805 1208 case SVt_IV:
a0d0e21e
LW		 1209 if (SvIOK(sv)) {
1210 if (SvGMAGICAL(sv))
1211 mg_get(sv);
cf2093f6 1212 if (SvIsUV(sv))
57def98f 1213 PerlIO_printf(fp, "%"UVuf, (UV)SvUVX(sv));
cf2093f6 1214 else
57def98f 1215 PerlIO_printf(fp, "%"IVdf, (IV)SvIVX(sv));
760ac839 1216 return !PerlIO_error(fp);
a0d0e21e
LW		 1217 }
1218 /* FALL THROUGH */
79072805 1219 default:
7d59b7e4 1220 if (PerlIO_isutf8(fp)) {
f9a63242
JH		 1221 if (!SvUTF8(sv))
1222 sv_utf8_upgrade(sv = sv_mortalcopy(sv));
7d59b7e4 1223 }
ae798467
NIS		 1224 else if (DO_UTF8(sv)) {
1225 if (!sv_utf8_downgrade((sv = sv_mortalcopy(sv)), TRUE)) {
1226 Perl_warner(aTHX_ WARN_UTF8, "Wide character in print");
1227 }
1228 }
f9a63242 1229 tmps = SvPV(sv, len);
79072805 1230 break;
ff8e2863 1231 }
94e4c244
JH		 1232 /* To detect whether the process is about to overstep its
1233 * filesize limit we would need getrlimit(). We could then
1234 * also transparently raise the limit with setrlimit() --
1235 * but only until the system hard limit/the filesystem limit,
c5dd3cdd
JH		 1236 * at which we would get EPERM. Note that when using buffered
1237 * io the write failure can be delayed until the flush/close. --jhi */
a21ac455 1238 if (len && (PerlIO_write(fp,tmps,len) == 0))
a687059c 1239 return FALSE;
760ac839 1240 return !PerlIO_error(fp);
a687059c
LW		 1241}
1242
79072805 1243I32
cea2e8a9 1244Perl_my_stat(pTHX)
a687059c 1245{
39644a26 1246 dSP;
79072805 1247 IO *io;
2dd78f96 1248 GV* gv;
79072805 1249
533c011a 1250 if (PL_op->op_flags & OPf_REF) {
924508f0 1251 EXTEND(SP,1);
2dd78f96 1252 gv = cGVOP_gv;
748a9306 1253 do_fstat:
2dd78f96 1254 io = GvIO(gv);
8990e307 1255 if (io && IoIFP(io)) {
2dd78f96 1256 PL_statgv = gv;
3280af22
NIS		 1257 sv_setpv(PL_statname,"");
1258 PL_laststype = OP_STAT;
1259 return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
a687059c
LW		 1260 }
1261 else {
2dd78f96 1262 if (gv == PL_defgv)
3280af22 1263 return PL_laststatval;
2dd78f96
JH		 1264 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1265 report_evil_fh(gv, io, PL_op->op_type);
3280af22
NIS		 1266 PL_statgv = Nullgv;
1267 sv_setpv(PL_statname,"");
1268 return (PL_laststatval = -1);
a687059c
LW		 1269 }
1270 }
1271 else {
748a9306 1272 SV* sv = POPs;
4b74e3fb 1273 char *s;
2d8e6c8d 1274 STRLEN n_a;
79072805 1275 PUTBACK;
748a9306 1276 if (SvTYPE(sv) == SVt_PVGV) {
2dd78f96 1277 gv = (GV*)sv;
748a9306
LW		 1278 goto do_fstat;
1279 }
1280 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2dd78f96 1281 gv = (GV*)SvRV(sv);
748a9306
LW		 1282 goto do_fstat;
1283 }
1284
2d8e6c8d 1285 s = SvPV(sv, n_a);
3280af22
NIS		 1286 PL_statgv = Nullgv;
1287 sv_setpv(PL_statname, s);
1288 PL_laststype = OP_STAT;
1289 PL_laststatval = PerlLIO_stat(s, &PL_statcache);
599cee73 1290 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(s, '\n'))
cea2e8a9 1291 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "stat");
3280af22 1292 return PL_laststatval;
a687059c
LW		 1293 }
1294}
1295
79072805 1296I32
cea2e8a9 1297Perl_my_lstat(pTHX)
c623bd54 1298{
39644a26 1299 dSP;
79072805 1300 SV *sv;
2d8e6c8d 1301 STRLEN n_a;
533c011a 1302 if (PL_op->op_flags & OPf_REF) {
924508f0 1303 EXTEND(SP,1);
638eceb6 1304 if (cGVOP_gv == PL_defgv) {
3280af22 1305 if (PL_laststype != OP_LSTAT)
cea2e8a9 1306 Perl_croak(aTHX_ "The stat preceding -l _ wasn't an lstat");
3280af22 1307 return PL_laststatval;
fe14fcc3 1308 }
cea2e8a9 1309 Perl_croak(aTHX_ "You can't use -l on a filehandle");
fe14fcc3 1310 }
c623bd54 1311
3280af22
NIS		 1312 PL_laststype = OP_LSTAT;
1313 PL_statgv = Nullgv;
79072805
LW		 1314 sv = POPs;
1315 PUTBACK;
2d8e6c8d 1316 sv_setpv(PL_statname,SvPV(sv, n_a));
2d8e6c8d 1317 PL_laststatval = PerlLIO_lstat(SvPV(sv, n_a),&PL_statcache);
2d8e6c8d 1318 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
cea2e8a9 1319 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "lstat");
3280af22 1320 return PL_laststatval;
c623bd54
LW		 1321}
1322
a687059c 1323bool
864dbfa3 1324Perl_do_aexec(pTHX_ SV *really, register SV **mark, register SV **sp)
a687059c 1325{
d5a9bfb0
IZ		 1326 return do_aexec5(really, mark, sp, 0, 0);
1327}
1328
1329bool
2aa1486d
GS		 1330Perl_do_aexec5(pTHX_ SV *really, register SV **mark, register SV **sp,
1331 int fd, int do_report)
d5a9bfb0 1332{
cd39f2b6
JH		 1333#ifdef MACOS_TRADITIONAL
1334 Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system");
1335#else
a687059c 1336 register char **a;
9c5ffd7c 1337 char *tmps = Nullch;
2d8e6c8d 1338 STRLEN n_a;
a687059c 1339
79072805 1340 if (sp > mark) {
3280af22
NIS		 1341 New(401,PL_Argv, sp - mark + 1, char*);
1342 a = PL_Argv;
79072805
LW		 1343 while (++mark <= sp) {
1344 if (*mark)
2d8e6c8d 1345 *a++ = SvPVx(*mark, n_a);
a687059c
LW		 1346 else
1347 *a++ = "";
1348 }
1349 *a = Nullch;
91b2752f
RG		 1350 if (really)
1351 tmps = SvPV(really, n_a);
1352 if ((!really && *PL_Argv[0] != '/') ||
1353 (really && *tmps != '/')) /* will execvp use PATH? */
79072805 1354 TAINT_ENV(); /* testing IFS here is overkill, probably */
91b2752f 1355 if (really && *tmps)
b4748376 1356 PerlProc_execvp(tmps,EXEC_ARGV_CAST(PL_Argv));
a687059c 1357 else
b4748376 1358 PerlProc_execvp(PL_Argv[0],EXEC_ARGV_CAST(PL_Argv));
599cee73 1359 if (ckWARN(WARN_EXEC))
a1d180c4 1360 Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s",
91b2752f 1361 (really ? tmps : PL_Argv[0]), Strerror(errno));
d5a9bfb0
IZ		 1362 if (do_report) {
1363 int e = errno;
1364
1365 PerlLIO_write(fd, (void*)&e, sizeof(int));
1366 PerlLIO_close(fd);
1367 }
a687059c 1368 }
bee1dbe2 1369 do_execfree();
cd39f2b6 1370#endif
a687059c
LW		 1371 return FALSE;
1372}
1373
fe14fcc3 1374void
864dbfa3 1375Perl_do_execfree(pTHX)
ff8e2863 1376{
3280af22
NIS		 1377 if (PL_Argv) {
1378 Safefree(PL_Argv);
1379 PL_Argv = Null(char **);
ff8e2863 1380 }
3280af22
NIS		 1381 if (PL_Cmd) {
1382 Safefree(PL_Cmd);
1383 PL_Cmd = Nullch;
ff8e2863
LW		 1384 }
1385}
1386
cd39f2b6 1387#if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
760ac839 1388
a687059c 1389bool
864dbfa3 1390Perl_do_exec(pTHX_ char *cmd)
a687059c 1391{
e446cec8
IZ		 1392 return do_exec3(cmd,0,0);
1393}
1394
1395bool
864dbfa3 1396Perl_do_exec3(pTHX_ char *cmd, int fd, int do_report)
e446cec8 1397{
a687059c
LW		 1398 register char **a;
1399 register char *s;
a687059c 1400
748a9306
LW		 1401 while (*cmd && isSPACE(*cmd))
1402 cmd++;
1403
a687059c
LW		 1404 /* save an extra exec if possible */
1405
bf38876a 1406#ifdef CSH
d05c1ba0
JH		 1407 {
1408 char flags[10];
1409 if (strnEQ(cmd,PL_cshname,PL_cshlen) &&
1410 strnEQ(cmd+PL_cshlen," -c",3)) {
1411 strcpy(flags,"-c");
1412 s = cmd+PL_cshlen+3;
1413 if (*s == 'f') {
1414 s++;
1415 strcat(flags,"f");
1416 }
1417 if (*s == ' ')
1418 s++;
1419 if (*s++ == '\'') {
1420 char *ncmd = s;
1421
1422 while (*s)
1423 s++;
1424 if (s[-1] == '\n')
1425 *--s = '\0';
1426 if (s[-1] == '\'') {
1427 *--s = '\0';
1428 PerlProc_execl(PL_cshname,"csh", flags, ncmd, (char*)0);
1429 *s = '\'';
1430 return FALSE;
1431 }
1432 }
a687059c
LW		 1433 }
1434 }
bf38876a 1435#endif /* CSH */
a687059c
LW		 1436
1437 /* see if there are shell metacharacters in it */
1438
748a9306
LW		 1439 if (*cmd == '.' && isSPACE(cmd[1]))
1440 goto doshell;
1441
1442 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
1443 goto doshell;
1444
c170e444 1445 for (s = cmd; *s && isALNUM(*s); s++) ; /* catch VAR=val gizmo */
63f2c1e1
LW		 1446 if (*s == '=')
1447 goto doshell;
748a9306 1448
a687059c 1449 for (s = cmd; *s; s++) {
d05c1ba0
JH		 1450 if (*s != ' ' && !isALPHA(*s) &&
1451 strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
a687059c
LW		 1452 if (*s == '\n' && !s[1]) {
1453 *s = '\0';
1454 break;
1455 }
603a98b0
IZ		 1456 /* handle the 2>&1 construct at the end */
1457 if (*s == '>' && s[1] == '&' && s[2] == '1'
1458 && s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2])
1459 && (!s[3] || isSPACE(s[3])))
1460 {
1461 char *t = s + 3;
1462
1463 while (*t && isSPACE(*t))
1464 ++t;
1465 if (!*t && (dup2(1,2) != -1)) {
1466 s[-2] = '\0';
1467 break;
1468 }
1469 }
a687059c 1470 doshell:
3280af22 1471 PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0);
a687059c
LW		 1472 return FALSE;
1473 }
1474 }
748a9306 1475
3280af22
NIS		 1476 New(402,PL_Argv, (s - cmd) / 2 + 2, char*);
1477 PL_Cmd = savepvn(cmd, s-cmd);
1478 a = PL_Argv;
1479 for (s = PL_Cmd; *s;) {
99b89507 1480 while (*s && isSPACE(*s)) s++;
a687059c
LW		 1481 if (*s)
1482 *(a++) = s;
99b89507 1483 while (*s && !isSPACE(*s)) s++;
a687059c
LW		 1484 if (*s)
1485 *s++ = '\0';
1486 }
1487 *a = Nullch;
3280af22
NIS		 1488 if (PL_Argv[0]) {
1489 PerlProc_execvp(PL_Argv[0],PL_Argv);
b1248f16 1490 if (errno == ENOEXEC) { /* for system V NIH syndrome */
ff8e2863 1491 do_execfree();
a687059c 1492 goto doshell;
b1248f16 1493 }
d008e5eb 1494 {
e446cec8
IZ		 1495 int e = errno;
1496
d008e5eb 1497 if (ckWARN(WARN_EXEC))
a1d180c4 1498 Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s",
d008e5eb 1499 PL_Argv[0], Strerror(errno));
e446cec8
IZ		 1500 if (do_report) {
1501 PerlLIO_write(fd, (void*)&e, sizeof(int));
1502 PerlLIO_close(fd);
1503 }
d008e5eb 1504 }
a687059c 1505 }
ff8e2863 1506 do_execfree();
a687059c
LW		 1507 return FALSE;
1508}
1509
6890e559 1510#endif /* OS2 || WIN32 */
760ac839 1511
79072805 1512I32
864dbfa3 1513Perl_apply(pTHX_ I32 type, register SV **mark, register SV **sp)
a687059c 1514{
79072805
LW		 1515 register I32 val;
1516 register I32 val2;
1517 register I32 tot = 0;
20408e3c 1518 char *what;
a687059c 1519 char *s;
79072805 1520 SV **oldmark = mark;
2d8e6c8d 1521 STRLEN n_a;
a687059c 1522
20408e3c 1523#define APPLY_TAINT_PROPER() \
3280af22 1524 STMT_START { \
17406bd6 1525 if (PL_tainted) { TAINT_PROPER(what); } \
873ef191 1526 } STMT_END
20408e3c
GS		 1527
1528 /* This is a first heuristic; it doesn't catch tainting magic. */
3280af22 1529 if (PL_tainting) {
463ee0b2 1530 while (++mark <= sp) {
bbce6d69 1531 if (SvTAINTED(*mark)) {
1532 TAINT;
1533 break;
1534 }
463ee0b2
LW		 1535 }
1536 mark = oldmark;
1537 }
a687059c 1538 switch (type) {
79072805 1539 case OP_CHMOD:
20408e3c
GS		 1540 what = "chmod";
1541 APPLY_TAINT_PROPER();
79072805 1542 if (++mark <= sp) {
463ee0b2 1543 val = SvIVx(*mark);
20408e3c
GS		 1544 APPLY_TAINT_PROPER();
1545 tot = sp - mark;
79072805 1546 while (++mark <= sp) {
2d8e6c8d 1547 char *name = SvPVx(*mark, n_a);
20408e3c
GS		 1548 APPLY_TAINT_PROPER();
1549 if (PerlLIO_chmod(name, val))
a687059c
LW		 1550 tot--;
1551 }
1552 }
1553 break;
fe14fcc3 1554#ifdef HAS_CHOWN
79072805 1555 case OP_CHOWN:
20408e3c
GS		 1556 what = "chown";
1557 APPLY_TAINT_PROPER();
79072805 1558 if (sp - mark > 2) {
463ee0b2
LW		 1559 val = SvIVx(*++mark);
1560 val2 = SvIVx(*++mark);
20408e3c 1561 APPLY_TAINT_PROPER();
a0d0e21e 1562 tot = sp - mark;
79072805 1563 while (++mark <= sp) {
2d8e6c8d 1564 char *name = SvPVx(*mark, n_a);
20408e3c 1565 APPLY_TAINT_PROPER();
36660982 1566 if (PerlLIO_chown(name, val, val2))
a687059c
LW		 1567 tot--;
1568 }
1569 }
1570 break;
b1248f16 1571#endif
a1d180c4 1572/*
dd64f1c3
AD		 1573XXX Should we make lchown() directly available from perl?
1574For now, we'll let Configure test for HAS_LCHOWN, but do
1575nothing in the core.
1576 --AD 5/1998
1577*/
fe14fcc3 1578#ifdef HAS_KILL
79072805 1579 case OP_KILL:
20408e3c
GS		 1580 what = "kill";
1581 APPLY_TAINT_PROPER();
55497cff 1582 if (mark == sp)
1583 break;
2d8e6c8d 1584 s = SvPVx(*++mark, n_a);
79072805
LW		 1585 if (isUPPER(*s)) {
1586 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1587 s += 3;
1588 if (!(val = whichsig(s)))
cea2e8a9 1589 Perl_croak(aTHX_ "Unrecognized signal name \"%s\"",s);
79072805
LW		 1590 }
1591 else
463ee0b2 1592 val = SvIVx(*mark);
20408e3c
GS		 1593 APPLY_TAINT_PROPER();
1594 tot = sp - mark;
3595fcef 1595#ifdef VMS
1596 /* kill() doesn't do process groups (job trees?) under VMS */
1597 if (val < 0) val = -val;
1598 if (val == SIGKILL) {
1599# include <starlet.h>
1600 /* Use native sys$delprc() to insure that target process is
1601 * deleted; supervisor-mode images don't pay attention to
1602 * CRTL's emulation of Unix-style signals and kill()
1603 */
1604 while (++mark <= sp) {
1605 I32 proc = SvIVx(*mark);
1606 register unsigned long int __vmssts;
20408e3c 1607 APPLY_TAINT_PROPER();
3595fcef 1608 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1609 tot--;
1610 switch (__vmssts) {
1611 case SS$_NONEXPR:
1612 case SS$_NOSUCHNODE:
1613 SETERRNO(ESRCH,__vmssts);
1614 break;
1615 case SS$_NOPRIV:
1616 SETERRNO(EPERM,__vmssts);
1617 break;
1618 default:
1619 SETERRNO(EVMSERR,__vmssts);
1620 }
1621 }
1622 }
1623 break;
1624 }
1625#endif
79072805
LW		 1626 if (val < 0) {
1627 val = -val;
1628 while (++mark <= sp) {
463ee0b2 1629 I32 proc = SvIVx(*mark);
20408e3c 1630 APPLY_TAINT_PROPER();
fe14fcc3 1631#ifdef HAS_KILLPG
3028581b 1632 if (PerlProc_killpg(proc,val)) /* BSD */
a687059c 1633#else
3028581b 1634 if (PerlProc_kill(-proc,val)) /* SYSV */
a687059c 1635#endif
79072805 1636 tot--;
a687059c 1637 }
79072805
LW		 1638 }
1639 else {
1640 while (++mark <= sp) {
20408e3c
GS		 1641 I32 proc = SvIVx(*mark);
1642 APPLY_TAINT_PROPER();
1643 if (PerlProc_kill(proc, val))
79072805 1644 tot--;
a687059c
LW		 1645 }
1646 }
1647 break;
b1248f16 1648#endif
79072805 1649 case OP_UNLINK:
20408e3c
GS		 1650 what = "unlink";
1651 APPLY_TAINT_PROPER();
79072805
LW		 1652 tot = sp - mark;
1653 while (++mark <= sp) {
2d8e6c8d 1654 s = SvPVx(*mark, n_a);
20408e3c 1655 APPLY_TAINT_PROPER();
3280af22 1656 if (PL_euid || PL_unsafe) {
a687059c
LW		 1657 if (UNLINK(s))
1658 tot--;
1659 }
1660 else { /* don't let root wipe out directories without -U */
3280af22 1661 if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
a687059c
LW		 1662 tot--;
1663 else {
1664 if (UNLINK(s))
1665 tot--;
1666 }
1667 }
1668 }
1669 break;
a0d0e21e 1670#ifdef HAS_UTIME
79072805 1671 case OP_UTIME:
20408e3c
GS		 1672 what = "utime";
1673 APPLY_TAINT_PROPER();
79072805 1674 if (sp - mark > 2) {
748a9306 1675#if defined(I_UTIME) || defined(VMS)
663a0e37
LW		 1676 struct utimbuf utbuf;
1677#else
a687059c 1678 struct {
dd2821f6
GS		 1679 Time_t actime;
1680 Time_t modtime;
a687059c 1681 } utbuf;
663a0e37 1682#endif
a687059c 1683
c6f7b413
RS		 1684 SV* accessed = *++mark;
1685 SV* modified = *++mark;
1686 void * utbufp = &utbuf;
1687
1688 /* be like C, and if both times are undefined, let the C
1689 library figure out what to do. This usually means
1690 "current time" */
1691
1692 if ( accessed == &PL_sv_undef && modified == &PL_sv_undef )
1693 utbufp = NULL;
1694
afd9f252 1695 Zero(&utbuf, sizeof utbuf, char);
517844ec 1696#ifdef BIG_TIME
c6f7b413
RS		 1697 utbuf.actime = (Time_t)SvNVx(accessed); /* time accessed */
1698 utbuf.modtime = (Time_t)SvNVx(modified); /* time modified */
517844ec 1699#else
c6f7b413
RS		 1700 utbuf.actime = (Time_t)SvIVx(accessed); /* time accessed */
1701 utbuf.modtime = (Time_t)SvIVx(modified); /* time modified */
517844ec 1702#endif
20408e3c 1703 APPLY_TAINT_PROPER();
79072805
LW		 1704 tot = sp - mark;
1705 while (++mark <= sp) {
2d8e6c8d 1706 char *name = SvPVx(*mark, n_a);
20408e3c 1707 APPLY_TAINT_PROPER();
c6f7b413 1708 if (PerlLIO_utime(name, utbufp))
a687059c
LW		 1709 tot--;
1710 }
a687059c
LW		 1711 }
1712 else
79072805 1713 tot = 0;
a687059c 1714 break;
a0d0e21e 1715#endif
a687059c
LW		 1716 }
1717 return tot;
20408e3c 1718
20408e3c 1719#undef APPLY_TAINT_PROPER
a687059c
LW		 1720}
1721
1722/* Do the permissions allow some operation? Assumes statcache already set. */
a0d0e21e 1723#ifndef VMS /* VMS' cando is in vms.c */
7f4774ae
JH		 1724bool
1725Perl_cando(pTHX_ Mode_t mode, Uid_t effective, register Stat_t *statbufp)
1726/* Note: we use `effective' both for uids and gids.
1727 * Here we are betting on Uid_t being equal or wider than Gid_t. */
a687059c 1728{
bee1dbe2 1729#ifdef DOSISH
fe14fcc3
LW		 1730 /* [Comments and code from Len Reed]
1731 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1732 * to write-protected files. The execute permission bit is set
1733 * by the Miscrosoft C library stat() function for the following:
1734 * .exe files
1735 * .com files
1736 * .bat files
1737 * directories
1738 * All files and directories are readable.
1739 * Directories and special files, e.g. "CON", cannot be
1740 * write-protected.
1741 * [Comment by Tom Dinger -- a directory can have the write-protect
1742 * bit set in the file system, but DOS permits changes to
1743 * the directory anyway. In addition, all bets are off
1744 * here for networked software, such as Novell and
1745 * Sun's PC-NFS.]
1746 */
1747
bee1dbe2
LW		 1748 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1749 * too so it will actually look into the files for magic numbers
1750 */
7f4774ae 1751 return (mode & statbufp->st_mode) ? TRUE : FALSE;
fe14fcc3 1752
55497cff 1753#else /* ! DOSISH */
3280af22 1754 if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */
7f4774ae 1755 if (mode == S_IXUSR) {
c623bd54 1756 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
a687059c
LW		 1757 return TRUE;
1758 }
1759 else
1760 return TRUE; /* root reads and writes anything */
1761 return FALSE;
1762 }
3280af22 1763 if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) {
7f4774ae 1764 if (statbufp->st_mode & mode)
a687059c
LW		 1765 return TRUE; /* ok as "user" */
1766 }
d8eceb89 1767 else if (ingroup(statbufp->st_gid,effective)) {
7f4774ae 1768 if (statbufp->st_mode & mode >> 3)
a687059c
LW		 1769 return TRUE; /* ok as "group" */
1770 }
7f4774ae 1771 else if (statbufp->st_mode & mode >> 6)
a687059c
LW		 1772 return TRUE; /* ok as "other" */
1773 return FALSE;
55497cff 1774#endif /* ! DOSISH */
a687059c 1775}
a0d0e21e 1776#endif /* ! VMS */
a687059c 1777
d8eceb89
JH		 1778bool
1779Perl_ingroup(pTHX_ Gid_t testgid, Uid_t effective)
a687059c 1780{
cd39f2b6
JH		 1781#ifdef MACOS_TRADITIONAL
1782 /* This is simply not correct for AppleShare, but fix it yerself. */
1783 return TRUE;
1784#else
3280af22 1785 if (testgid == (effective ? PL_egid : PL_gid))
a687059c 1786 return TRUE;
fe14fcc3 1787#ifdef HAS_GETGROUPS
a687059c
LW		 1788#ifndef NGROUPS
1789#define NGROUPS 32
1790#endif
1791 {
a0d0e21e 1792 Groups_t gary[NGROUPS];
79072805 1793 I32 anum;
a687059c
LW		 1794
1795 anum = getgroups(NGROUPS,gary);
1796 while (--anum >= 0)
1797 if (gary[anum] == testgid)
1798 return TRUE;
1799 }
1800#endif
1801 return FALSE;
cd39f2b6 1802#endif
a687059c 1803}
c2ab57d4 1804
fe14fcc3 1805#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
c2ab57d4 1806
79072805 1807I32
864dbfa3 1808Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp)
c2ab57d4 1809{
c2ab57d4 1810 key_t key;
79072805 1811 I32 n, flags;
c2ab57d4 1812
463ee0b2
LW		 1813 key = (key_t)SvNVx(*++mark);
1814 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1815 flags = SvIVx(*++mark);
748a9306 1816 SETERRNO(0,0);
c2ab57d4
LW		 1817 switch (optype)
1818 {
fe14fcc3 1819#ifdef HAS_MSG
79072805 1820 case OP_MSGGET:
c2ab57d4 1821 return msgget(key, flags);
e5d73d77 1822#endif
fe14fcc3 1823#ifdef HAS_SEM
79072805 1824 case OP_SEMGET:
c2ab57d4 1825 return semget(key, n, flags);
e5d73d77 1826#endif
fe14fcc3 1827#ifdef HAS_SHM
79072805 1828 case OP_SHMGET:
c2ab57d4 1829 return shmget(key, n, flags);
e5d73d77 1830#endif
fe14fcc3 1831#if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
e5d73d77 1832 default:
cea2e8a9 1833 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
e5d73d77 1834#endif
c2ab57d4
LW		 1835 }
1836 return -1; /* should never happen */
1837}
1838
79072805 1839I32
864dbfa3 1840Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp)
c2ab57d4 1841{
79072805 1842 SV *astr;
c2ab57d4 1843 char *a;
a0d0e21e
LW		 1844 I32 id, n, cmd, infosize, getinfo;
1845 I32 ret = -1;
c2ab57d4 1846
463ee0b2
LW		 1847 id = SvIVx(*++mark);
1848 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
1849 cmd = SvIVx(*++mark);
79072805 1850 astr = *++mark;
c2ab57d4
LW		 1851 infosize = 0;
1852 getinfo = (cmd == IPC_STAT);
1853
1854 switch (optype)
1855 {
fe14fcc3 1856#ifdef HAS_MSG
79072805 1857 case OP_MSGCTL:
c2ab57d4
LW		 1858 if (cmd == IPC_STAT || cmd == IPC_SET)
1859 infosize = sizeof(struct msqid_ds);
1860 break;
e5d73d77 1861#endif
fe14fcc3 1862#ifdef HAS_SHM
79072805 1863 case OP_SHMCTL:
c2ab57d4
LW		 1864 if (cmd == IPC_STAT || cmd == IPC_SET)
1865 infosize = sizeof(struct shmid_ds);
1866 break;
e5d73d77 1867#endif
fe14fcc3 1868#ifdef HAS_SEM
79072805 1869 case OP_SEMCTL:
39398f3f 1870#ifdef Semctl
c2ab57d4
LW		 1871 if (cmd == IPC_STAT || cmd == IPC_SET)
1872 infosize = sizeof(struct semid_ds);
1873 else if (cmd == GETALL || cmd == SETALL)
1874 {
8e591e46 1875 struct semid_ds semds;
bd89102f 1876 union semun semun;
e6f0bdd6
GS		 1877#ifdef EXTRA_F_IN_SEMUN_BUF
1878 semun.buff = &semds;
1879#else
84902520 1880 semun.buf = &semds;
e6f0bdd6 1881#endif
c2ab57d4 1882 getinfo = (cmd == GETALL);
9b89d93d
GB		 1883 if (Semctl(id, 0, IPC_STAT, semun) == -1)
1884 return -1;
6e21c824
LW		 1885 infosize = semds.sem_nsems * sizeof(short);
1886 /* "short" is technically wrong but much more portable
1887 than guessing about u_?short(_t)? */
c2ab57d4 1888 }
39398f3f 1889#else
cea2e8a9 1890 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
39398f3f 1891#endif
c2ab57d4 1892 break;
e5d73d77 1893#endif
fe14fcc3 1894#if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
e5d73d77 1895 default:
cea2e8a9 1896 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
e5d73d77 1897#endif
c2ab57d4
LW		 1898 }
1899
1900 if (infosize)
1901 {
a0d0e21e 1902 STRLEN len;
c2ab57d4
LW		 1903 if (getinfo)
1904 {
a0d0e21e
LW		 1905 SvPV_force(astr, len);
1906 a = SvGROW(astr, infosize+1);
c2ab57d4
LW		 1907 }
1908 else
1909 {
463ee0b2
LW		 1910 a = SvPV(astr, len);
1911 if (len != infosize)
cea2e8a9 1912 Perl_croak(aTHX_ "Bad arg length for %s, is %lu, should be %ld",
4ec43091
JH		 1913 PL_op_desc[optype],
1914 (unsigned long)len,
1915 (long)infosize);
c2ab57d4
LW		 1916 }
1917 }
1918 else
1919 {
c030ccd9 1920 IV i = SvIV(astr);
56431972 1921 a = INT2PTR(char *,i); /* ouch */
c2ab57d4 1922 }
748a9306 1923 SETERRNO(0,0);
c2ab57d4
LW		 1924 switch (optype)
1925 {
fe14fcc3 1926#ifdef HAS_MSG
79072805 1927 case OP_MSGCTL:
bee1dbe2 1928 ret = msgctl(id, cmd, (struct msqid_ds *)a);
c2ab57d4 1929 break;
e5d73d77 1930#endif
fe14fcc3 1931#ifdef HAS_SEM
bd89102f 1932 case OP_SEMCTL: {
39398f3f 1933#ifdef Semctl
bd89102f
AD		 1934 union semun unsemds;
1935
e6f0bdd6
GS		 1936#ifdef EXTRA_F_IN_SEMUN_BUF
1937 unsemds.buff = (struct semid_ds *)a;
1938#else
bd89102f 1939 unsemds.buf = (struct semid_ds *)a;
e6f0bdd6 1940#endif
bd89102f 1941 ret = Semctl(id, n, cmd, unsemds);
39398f3f 1942#else
cea2e8a9 1943 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
39398f3f 1944#endif
bd89102f 1945 }
c2ab57d4 1946 break;
e5d73d77 1947#endif
fe14fcc3 1948#ifdef HAS_SHM
79072805 1949 case OP_SHMCTL:
bee1dbe2 1950 ret = shmctl(id, cmd, (struct shmid_ds *)a);
c2ab57d4 1951 break;
e5d73d77 1952#endif
c2ab57d4
LW		 1953 }
1954 if (getinfo && ret >= 0) {
79072805
LW		 1955 SvCUR_set(astr, infosize);
1956 *SvEND(astr) = '\0';
a0d0e21e 1957 SvSETMAGIC(astr);
c2ab57d4
LW		 1958 }
1959 return ret;
1960}
1961
79072805 1962I32
864dbfa3 1963Perl_do_msgsnd(pTHX_ SV **mark, SV **sp)
c2ab57d4 1964{
fe14fcc3 1965#ifdef HAS_MSG
79072805 1966 SV *mstr;
c2ab57d4 1967 char *mbuf;
79072805 1968 I32 id, msize, flags;
463ee0b2 1969 STRLEN len;
c2ab57d4 1970
463ee0b2 1971 id = SvIVx(*++mark);
79072805 1972 mstr = *++mark;
463ee0b2
LW		 1973 flags = SvIVx(*++mark);
1974 mbuf = SvPV(mstr, len);
1975 if ((msize = len - sizeof(long)) < 0)
cea2e8a9 1976 Perl_croak(aTHX_ "Arg too short for msgsnd");
748a9306 1977 SETERRNO(0,0);
bee1dbe2 1978 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
e5d73d77 1979#else
cea2e8a9 1980 Perl_croak(aTHX_ "msgsnd not implemented");
e5d73d77 1981#endif
c2ab57d4
LW		 1982}
1983
79072805 1984I32
864dbfa3 1985Perl_do_msgrcv(pTHX_ SV **mark, SV **sp)
c2ab57d4 1986{
fe14fcc3 1987#ifdef HAS_MSG
79072805 1988 SV *mstr;
c2ab57d4
LW		 1989 char *mbuf;
1990 long mtype;
79072805 1991 I32 id, msize, flags, ret;
463ee0b2 1992 STRLEN len;
79072805 1993
463ee0b2 1994 id = SvIVx(*++mark);
79072805 1995 mstr = *++mark;
c2e66d9e
GS		 1996 /* suppress warning when reading into undef var --jhi */
1997 if (! SvOK(mstr))
1998 sv_setpvn(mstr, "", 0);
463ee0b2
LW		 1999 msize = SvIVx(*++mark);
2000 mtype = (long)SvIVx(*++mark);
2001 flags = SvIVx(*++mark);
a0d0e21e
LW		 2002 SvPV_force(mstr, len);
2003 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
a1d180c4 2004
748a9306 2005 SETERRNO(0,0);
bee1dbe2 2006 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
c2ab57d4 2007 if (ret >= 0) {
79072805
LW		 2008 SvCUR_set(mstr, sizeof(long)+ret);
2009 *SvEND(mstr) = '\0';
41d6edb2
JH		 2010#ifndef INCOMPLETE_TAINTS
2011 /* who knows who has been playing with this message? */
2012 SvTAINTED_on(mstr);
2013#endif
c2ab57d4
LW		 2014 }
2015 return ret;
e5d73d77 2016#else
cea2e8a9 2017 Perl_croak(aTHX_ "msgrcv not implemented");
e5d73d77 2018#endif
c2ab57d4
LW		 2019}
2020
79072805 2021I32
864dbfa3 2022Perl_do_semop(pTHX_ SV **mark, SV **sp)
c2ab57d4 2023{
fe14fcc3 2024#ifdef HAS_SEM
79072805 2025 SV *opstr;
c2ab57d4 2026 char *opbuf;
463ee0b2
LW		 2027 I32 id;
2028 STRLEN opsize;
c2ab57d4 2029
463ee0b2 2030 id = SvIVx(*++mark);
79072805 2031 opstr = *++mark;
463ee0b2 2032 opbuf = SvPV(opstr, opsize);
248ff010
NC		 2033 if (opsize < 3 * SHORTSIZE
2034 || (opsize % (3 * SHORTSIZE))) {
748a9306 2035 SETERRNO(EINVAL,LIB$_INVARG);
c2ab57d4
LW		 2036 return -1;
2037 }
748a9306 2038 SETERRNO(0,0);
248ff010
NC		 2039 /* We can't assume that sizeof(struct sembuf) == 3 * sizeof(short). */
2040 {
2041 int nsops = opsize / (3 * sizeof (short));
2042 int i = nsops;
2043 short *ops = (short *) opbuf;
2044 short *o = ops;
2045 struct sembuf *temps, *t;
2046 I32 result;
2047
2048 New (0, temps, nsops, struct sembuf);
2049 t = temps;
2050 while (i--) {
2051 t->sem_num = *o++;
2052 t->sem_op = *o++;
2053 t->sem_flg = *o++;
2054 t++;
2055 }
2056 result = semop(id, temps, nsops);
2057 t = temps;
2058 o = ops;
2059 i = nsops;
2060 while (i--) {
2061 *o++ = t->sem_num;
2062 *o++ = t->sem_op;
2063 *o++ = t->sem_flg;
2064 t++;
2065 }
2066 Safefree(temps);
2067 return result;
2068 }
e5d73d77 2069#else
cea2e8a9 2070 Perl_croak(aTHX_ "semop not implemented");
e5d73d77 2071#endif
c2ab57d4
LW		 2072}
2073
79072805 2074I32
864dbfa3 2075Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp)
c2ab57d4 2076{
fe14fcc3 2077#ifdef HAS_SHM
79072805 2078 SV *mstr;
c2ab57d4 2079 char *mbuf, *shm;
79072805 2080 I32 id, mpos, msize;
463ee0b2 2081 STRLEN len;
c2ab57d4 2082 struct shmid_ds shmds;
c2ab57d4 2083
463ee0b2 2084 id = SvIVx(*++mark);
79072805 2085 mstr = *++mark;
463ee0b2
LW		 2086 mpos = SvIVx(*++mark);
2087 msize = SvIVx(*++mark);
748a9306 2088 SETERRNO(0,0);
c2ab57d4
LW		 2089 if (shmctl(id, IPC_STAT, &shmds) == -1)
2090 return -1;
2091 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
748a9306 2092 SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */
c2ab57d4
LW		 2093 return -1;
2094 }
8ac85365 2095 shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
c2ab57d4
LW		 2096 if (shm == (char *)-1) /* I hate System V IPC, I really do */
2097 return -1;
79072805 2098 if (optype == OP_SHMREAD) {
9f538c04
GS		 2099 /* suppress warning when reading into undef var (tchrist 3/Mar/00) */
2100 if (! SvOK(mstr))
2101 sv_setpvn(mstr, "", 0);
a0d0e21e
LW		 2102 SvPV_force(mstr, len);
2103 mbuf = SvGROW(mstr, msize+1);
2104
bee1dbe2 2105 Copy(shm + mpos, mbuf, msize, char);
79072805
LW		 2106 SvCUR_set(mstr, msize);
2107 *SvEND(mstr) = '\0';
a0d0e21e 2108 SvSETMAGIC(mstr);
d929ce6f
JH		 2109#ifndef INCOMPLETE_TAINTS
2110 /* who knows who has been playing with this shared memory? */
2111 SvTAINTED_on(mstr);
2112#endif
c2ab57d4
LW		 2113 }
2114 else {
79072805 2115 I32 n;
c2ab57d4 2116
a0d0e21e 2117 mbuf = SvPV(mstr, len);
463ee0b2 2118 if ((n = len) > msize)
c2ab57d4 2119 n = msize;
bee1dbe2 2120 Copy(mbuf, shm + mpos, n, char);
c2ab57d4 2121 if (n < msize)
bee1dbe2 2122 memzero(shm + mpos + n, msize - n);
c2ab57d4
LW		 2123 }
2124 return shmdt(shm);
e5d73d77 2125#else
cea2e8a9 2126 Perl_croak(aTHX_ "shm I/O not implemented");
e5d73d77 2127#endif
c2ab57d4
LW		 2128}
2129
fe14fcc3 2130#endif /* SYSV IPC */
4e35701f 2131
0d44d22b
NC		 2132/*
2133=for apidoc start_glob
2134
2135Function called by C<do_readline> to spawn a glob (or do the glob inside
2136perl on VMS). This code used to be inline, but now perl uses C<File::Glob>
2137this glob starter is only used by miniperl during the build proccess.
2138Moving it away shrinks pp_hot.c; shrinking pp_hot.c helps speed perl up.
fab3f3a7 2139
0d44d22b
NC		 2140=cut
2141*/
2142
2143PerlIO *
2144Perl_start_glob (pTHX_ SV *tmpglob, IO *io)
2145{
2146 SV *tmpcmd = NEWSV(55, 0);
2147 PerlIO *fp;
2148 ENTER;
2149 SAVEFREESV(tmpcmd);
2150#ifdef VMS /* expand the wildcards right here, rather than opening a pipe, */
2151 /* since spawning off a process is a real performance hit */
2152 {
2153#include <descrip.h>
2154#include <lib$routines.h>
2155#include <nam.h>
2156#include <rmsdef.h>
2157 char rslt[NAM$C_MAXRSS+1+sizeof(unsigned short int)] = {'\0','\0'};
2158 char vmsspec[NAM$C_MAXRSS+1];
2159 char *rstr = rslt + sizeof(unsigned short int), *begin, *end, *cp;
0d44d22b
NC		 2160 $DESCRIPTOR(dfltdsc,"SYS$DISK:[]*.*;");
2161 PerlIO *tmpfp;
2162 STRLEN i;
2163 struct dsc$descriptor_s wilddsc
2164 = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0};
2165 struct dsc$descriptor_vs rsdsc
2166 = {sizeof rslt, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, rslt};
2167 unsigned long int cxt = 0, sts = 0, ok = 1, hasdir = 0, hasver = 0, isunix = 0;
2168
2169 /* We could find out if there's an explicit dev/dir or version
2170 by peeking into lib$find_file's internal context at
2171 ((struct NAM *)((struct FAB *)cxt)->fab$l_nam)->nam$l_fnb
2172 but that's unsupported, so I don't want to do it now and
2173 have it bite someone in the future. */
0d44d22b
NC		 2174 cp = SvPV(tmpglob,i);
2175 for (; i; i--) {
2176 if (cp[i] == ';') hasver = 1;
2177 if (cp[i] == '.') {
2178 if (sts) hasver = 1;
2179 else sts = 1;
2180 }
2181 if (cp[i] == '/') {
2182 hasdir = isunix = 1;
2183 break;
2184 }
2185 if (cp[i] == ']' || cp[i] == '>' || cp[i] == ':') {
2186 hasdir = 1;
2187 break;
2188 }
2189 }
a15cef0c 2190 if ((tmpfp = PerlIO_tmpfile()) != NULL) {
0d44d22b
NC		 2191 Stat_t st;
2192 if (!PerlLIO_stat(SvPVX(tmpglob),&st) && S_ISDIR(st.st_mode))
2193 ok = ((wilddsc.dsc$a_pointer = tovmspath(SvPVX(tmpglob),vmsspec)) != NULL);
2194 else ok = ((wilddsc.dsc$a_pointer = tovmsspec(SvPVX(tmpglob),vmsspec)) != NULL);
2195 if (ok) wilddsc.dsc$w_length = (unsigned short int) strlen(wilddsc.dsc$a_pointer);
2196 while (ok && ((sts = lib$find_file(&wilddsc,&rsdsc,&cxt,
2197 &dfltdsc,NULL,NULL,NULL))&1)) {
2198 end = rstr + (unsigned long int) *rslt;
2199 if (!hasver) while (*end != ';') end--;
2200 *(end++) = '\n'; *end = '\0';
2201 for (cp = rstr; *cp; cp++) *cp = _tolower(*cp);
2202 if (hasdir) {
2203 if (isunix) trim_unixpath(rstr,SvPVX(tmpglob),1);
2204 begin = rstr;
2205 }
2206 else {
2207 begin = end;
2208 while (*(--begin) != ']' && *begin != '>') ;
2209 ++begin;
2210 }
2211 ok = (PerlIO_puts(tmpfp,begin) != EOF);
2212 }
2213 if (cxt) (void)lib$find_file_end(&cxt);
2214 if (ok && sts != RMS$_NMF &&
2215 sts != RMS$_DNF && sts != RMS$_FNF) ok = 0;
2216 if (!ok) {
2217 if (!(sts & 1)) {
2218 SETERRNO((sts == RMS$_SYN ? EINVAL : EVMSERR),sts);
2219 }
2220 PerlIO_close(tmpfp);
2221 fp = NULL;
2222 }
2223 else {
2224 PerlIO_rewind(tmpfp);
2225 IoTYPE(io) = IoTYPE_RDONLY;
2226 IoIFP(io) = fp = tmpfp;
2227 IoFLAGS(io) &= ~IOf_UNTAINT; /* maybe redundant */
2228 }
2229 }
2230 }
2231#else /* !VMS */
2232#ifdef MACOS_TRADITIONAL
2233 sv_setpv(tmpcmd, "glob ");
2234 sv_catsv(tmpcmd, tmpglob);
2235 sv_catpv(tmpcmd, " |");
2236#else
2237#ifdef DOSISH
2238#ifdef OS2
2239 sv_setpv(tmpcmd, "for a in ");
2240 sv_catsv(tmpcmd, tmpglob);
2241 sv_catpv(tmpcmd, "; do echo \"$a\\0\\c\"; done |");
2242#else
2243#ifdef DJGPP
2244 sv_setpv(tmpcmd, "/dev/dosglob/"); /* File System Extension */
2245 sv_catsv(tmpcmd, tmpglob);
2246#else
2247 sv_setpv(tmpcmd, "perlglob ");
2248 sv_catsv(tmpcmd, tmpglob);
2249 sv_catpv(tmpcmd, " |");
2250#endif /* !DJGPP */
2251#endif /* !OS2 */
2252#else /* !DOSISH */
2253#if defined(CSH)
2254 sv_setpvn(tmpcmd, PL_cshname, PL_cshlen);
2255 sv_catpv(tmpcmd, " -cf 'set nonomatch; glob ");
2256 sv_catsv(tmpcmd, tmpglob);
2257 sv_catpv(tmpcmd, "' 2>/dev/null |");
2258#else
2259 sv_setpv(tmpcmd, "echo ");
2260 sv_catsv(tmpcmd, tmpglob);
2261#if 'z' - 'a' == 25
2262 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|");
2263#else
2264 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|");
2265#endif
2266#endif /* !CSH */
2267#endif /* !DOSISH */
2268#endif /* MACOS_TRADITIONAL */
2269 (void)do_open(PL_last_in_gv, SvPVX(tmpcmd), SvCUR(tmpcmd),
2270 FALSE, O_RDONLY, 0, Nullfp);
2271 fp = IoIFP(io);
2272#endif /* !VMS */
2273 LEAVE;
2274 return fp;
2275}
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