Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* doio.c |
a687059c | 2 | * |
3818b22b | 3 | * Copyright (c) 1991-2000, 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 | ||
54 | /* XXX If this causes problems, set i_unistd=undef in the hint file. */ | |
55 | #ifdef I_UNISTD | |
56 | # include <unistd.h> | |
57 | #endif | |
58 | ||
232e078e AD |
59 | #if defined(HAS_SOCKET) && !defined(VMS) /* VMS handles sockets via vmsish.h */ |
60 | # include <sys/socket.h> | |
29209bc5 | 61 | # if defined(USE_SOCKS) && defined(I_SOCKS) |
86959918 JH |
62 | # include <socks.h> |
63 | # endif | |
64 | # ifdef I_NETBSD | |
65 | # include <netdb.h> | |
66 | # endif | |
232e078e AD |
67 | # ifndef ENOTSOCK |
68 | # ifdef I_NET_ERRNO | |
69 | # include <net/errno.h> | |
70 | # endif | |
71 | # endif | |
72 | #endif | |
73 | ||
13b3f787 JH |
74 | /* Put this after #includes because <unistd.h> defines _XOPEN_*. |
75 | * Sock_size_t is defined identically in pp_sys.c. */ | |
d574b85e | 76 | #ifndef Sock_size_t |
13b3f787 JH |
77 | # ifdef HAS_SOCKLEN_T |
78 | # define Sock_size_t socklen_t | |
d574b85e | 79 | # else |
13b3f787 JH |
80 | # if _XOPEN_VERSION >= 5 || defined(_XOPEN_SOURCE_EXTENDED) || defined(__GLIBC__) |
81 | # define Sock_size_t Size_t | |
82 | # else | |
83 | # define Sock_size_t int | |
84 | # endif | |
d574b85e CS |
85 | # endif |
86 | #endif | |
87 | ||
a687059c | 88 | bool |
6170680b IZ |
89 | Perl_do_open(pTHX_ GV *gv, register char *name, I32 len, int as_raw, |
90 | int rawmode, int rawperm, PerlIO *supplied_fp) | |
91 | { | |
92 | return do_open9(gv, name, len, as_raw, rawmode, rawperm, | |
93 | supplied_fp, Nullsv, 0); | |
94 | } | |
95 | ||
96 | bool | |
97 | Perl_do_open9(pTHX_ GV *gv, register char *name, I32 len, int as_raw, | |
98 | int rawmode, int rawperm, PerlIO *supplied_fp, SV *svs, | |
99 | I32 num_svs) | |
a687059c | 100 | { |
a0d0e21e | 101 | register IO *io = GvIOn(gv); |
760ac839 LW |
102 | PerlIO *saveifp = Nullfp; |
103 | PerlIO *saveofp = Nullfp; | |
6e21c824 | 104 | char savetype = ' '; |
c07a80fd | 105 | int writing = 0; |
760ac839 | 106 | PerlIO *fp; |
c07a80fd | 107 | int fd; |
108 | int result; | |
3500f679 | 109 | bool was_fdopen = FALSE; |
a687059c | 110 | |
3280af22 | 111 | PL_forkprocess = 1; /* assume true if no fork */ |
c07a80fd | 112 | |
a0d0e21e | 113 | if (IoIFP(io)) { |
760ac839 | 114 | fd = PerlIO_fileno(IoIFP(io)); |
8990e307 | 115 | if (IoTYPE(io) == '-') |
c2ab57d4 | 116 | result = 0; |
3280af22 | 117 | else if (fd <= PL_maxsysfd) { |
8990e307 LW |
118 | saveifp = IoIFP(io); |
119 | saveofp = IoOFP(io); | |
120 | savetype = IoTYPE(io); | |
6e21c824 LW |
121 | result = 0; |
122 | } | |
8990e307 | 123 | else if (IoTYPE(io) == '|') |
3028581b | 124 | result = PerlProc_pclose(IoIFP(io)); |
8990e307 LW |
125 | else if (IoIFP(io) != IoOFP(io)) { |
126 | if (IoOFP(io)) { | |
760ac839 | 127 | result = PerlIO_close(IoOFP(io)); |
6170680b | 128 | PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */ |
c2ab57d4 LW |
129 | } |
130 | else | |
760ac839 | 131 | result = PerlIO_close(IoIFP(io)); |
a687059c | 132 | } |
a687059c | 133 | else |
760ac839 | 134 | result = PerlIO_close(IoIFP(io)); |
3280af22 | 135 | if (result == EOF && fd > PL_maxsysfd) |
bf49b057 | 136 | PerlIO_printf(Perl_error_log, |
6170680b IZ |
137 | "Warning: unable to close filehandle %s properly.\n", |
138 | GvENAME(gv)); | |
8990e307 | 139 | IoOFP(io) = IoIFP(io) = Nullfp; |
a687059c | 140 | } |
c07a80fd | 141 | |
142 | if (as_raw) { | |
09458382 | 143 | #if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE) |
5ff3f7a4 GS |
144 | rawmode |= O_LARGEFILE; |
145 | #endif | |
146 | ||
9d116dd7 JH |
147 | #ifndef O_ACCMODE |
148 | #define O_ACCMODE 3 /* Assume traditional implementation */ | |
149 | #endif | |
5ff3f7a4 | 150 | |
9d116dd7 JH |
151 | switch (result = rawmode & O_ACCMODE) { |
152 | case O_RDONLY: | |
153 | IoTYPE(io) = '<'; | |
154 | break; | |
155 | case O_WRONLY: | |
156 | IoTYPE(io) = '>'; | |
157 | break; | |
158 | case O_RDWR: | |
159 | default: | |
160 | IoTYPE(io) = '+'; | |
161 | break; | |
162 | } | |
163 | ||
c07a80fd | 164 | writing = (result > 0); |
3028581b | 165 | fd = PerlLIO_open3(name, rawmode, rawperm); |
9d116dd7 | 166 | |
c07a80fd | 167 | if (fd == -1) |
168 | fp = NULL; | |
169 | else { | |
a52cb5f7 | 170 | char *fpmode; |
9d116dd7 | 171 | if (result == O_RDONLY) |
360e5741 CS |
172 | fpmode = "r"; |
173 | #ifdef O_APPEND | |
174 | else if (rawmode & O_APPEND) | |
9d116dd7 | 175 | fpmode = (result == O_WRONLY) ? "a" : "a+"; |
360e5741 CS |
176 | #endif |
177 | else | |
9d116dd7 | 178 | fpmode = (result == O_WRONLY) ? "w" : "r+"; |
360e5741 | 179 | fp = PerlIO_fdopen(fd, fpmode); |
c07a80fd | 180 | if (!fp) |
3028581b | 181 | PerlLIO_close(fd); |
c07a80fd | 182 | } |
a687059c | 183 | } |
c07a80fd | 184 | else { |
faecd977 GS |
185 | char *type; |
186 | char *oname = name; | |
6170680b | 187 | STRLEN tlen; |
faecd977 | 188 | STRLEN olen = len; |
c07a80fd | 189 | char mode[3]; /* stdio file mode ("r\0" or "r+\0") */ |
190 | int dodup; | |
191 | ||
faecd977 GS |
192 | type = savepvn(name, len); |
193 | tlen = len; | |
194 | SAVEFREEPV(type); | |
6170680b | 195 | if (num_svs) { |
faecd977 GS |
196 | STRLEN l; |
197 | name = SvPV(svs, l) ; | |
198 | len = (I32)l; | |
199 | name = savepvn(name, len); | |
200 | SAVEFREEPV(name); | |
6170680b | 201 | } |
faecd977 | 202 | else { |
6170680b IZ |
203 | while (tlen && isSPACE(type[tlen-1])) |
204 | type[--tlen] = '\0'; | |
faecd977 GS |
205 | name = type; |
206 | len = tlen; | |
207 | } | |
c07a80fd | 208 | mode[0] = mode[1] = mode[2] = '\0'; |
6170680b IZ |
209 | IoTYPE(io) = *type; |
210 | if (*type == '+' && tlen > 1 && type[tlen-1] != '|') { /* scary */ | |
211 | mode[1] = *type++; | |
212 | --tlen; | |
c07a80fd | 213 | writing = 1; |
a687059c | 214 | } |
c07a80fd | 215 | |
6170680b IZ |
216 | if (*type == '|') { |
217 | if (num_svs && (tlen != 2 || type[1] != '-')) { | |
218 | unknown_desr: | |
894356b3 | 219 | Perl_croak(aTHX_ "Unknown open() mode '%.*s'", (int)olen, oname); |
6170680b | 220 | } |
c07a80fd | 221 | /*SUPPRESS 530*/ |
faecd977 GS |
222 | for (type++, tlen--; isSPACE(*type); type++, tlen--) ; |
223 | if (!num_svs) { | |
6170680b | 224 | name = type; |
faecd977 GS |
225 | len = tlen; |
226 | } | |
06eaf0bc GS |
227 | if (*name == '\0') { /* command is missing 19990114 */ |
228 | dTHR; | |
229 | if (ckWARN(WARN_PIPE)) | |
cea2e8a9 | 230 | Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open"); |
06eaf0bc GS |
231 | errno = EPIPE; |
232 | goto say_false; | |
233 | } | |
6170680b | 234 | if (strNE(name,"-") || num_svs) |
c07a80fd | 235 | TAINT_ENV(); |
236 | TAINT_PROPER("piped open"); | |
faecd977 | 237 | if (name[len-1] == '|') { |
d008e5eb | 238 | dTHR; |
faecd977 | 239 | name[--len] = '\0' ; |
599cee73 | 240 | if (ckWARN(WARN_PIPE)) |
9a7dcd9c | 241 | Perl_warner(aTHX_ WARN_PIPE, "Can't open bidirectional pipe"); |
7b8d334a | 242 | } |
3028581b | 243 | fp = PerlProc_popen(name,"w"); |
c07a80fd | 244 | writing = 1; |
245 | } | |
6170680b | 246 | else if (*type == '>') { |
c07a80fd | 247 | TAINT_PROPER("open"); |
6170680b IZ |
248 | type++; |
249 | if (*type == '>') { | |
c07a80fd | 250 | mode[0] = IoTYPE(io) = 'a'; |
6170680b IZ |
251 | type++; |
252 | tlen--; | |
a0d0e21e | 253 | } |
c07a80fd | 254 | else |
255 | mode[0] = 'w'; | |
256 | writing = 1; | |
257 | ||
6170680b IZ |
258 | if (num_svs && tlen != 1) |
259 | goto unknown_desr; | |
260 | if (*type == '&') { | |
261 | name = type; | |
c07a80fd | 262 | duplicity: |
263 | dodup = 1; | |
264 | name++; | |
265 | if (*name == '=') { | |
266 | dodup = 0; | |
a0d0e21e | 267 | name++; |
c07a80fd | 268 | } |
269 | if (!*name && supplied_fp) | |
270 | fp = supplied_fp; | |
a0d0e21e | 271 | else { |
c07a80fd | 272 | /*SUPPRESS 530*/ |
273 | for (; isSPACE(*name); name++) ; | |
274 | if (isDIGIT(*name)) | |
275 | fd = atoi(name); | |
276 | else { | |
277 | IO* thatio; | |
278 | gv = gv_fetchpv(name,FALSE,SVt_PVIO); | |
279 | thatio = GvIO(gv); | |
280 | if (!thatio) { | |
6e21c824 | 281 | #ifdef EINVAL |
c07a80fd | 282 | SETERRNO(EINVAL,SS$_IVCHAN); |
6e21c824 | 283 | #endif |
c07a80fd | 284 | goto say_false; |
285 | } | |
286 | if (IoIFP(thatio)) { | |
54195c32 | 287 | PerlIO *fp = IoIFP(thatio); |
7211d486 JH |
288 | /* Flush stdio buffer before dup. --mjd |
289 | * Unfortunately SEEK_CURing 0 seems to | |
290 | * be optimized away on most platforms; | |
291 | * only Solaris and Linux seem to flush | |
292 | * on that. --jhi */ | |
54195c32 | 293 | PerlIO_seek(fp, 0, SEEK_CUR); |
7211d486 JH |
294 | /* On the other hand, do all platforms |
295 | * take gracefully to flushing a read-only | |
296 | * filehandle? Perhaps we should do | |
297 | * fsetpos(src)+fgetpos(dst)? --nik */ | |
298 | PerlIO_flush(fp); | |
54195c32 | 299 | fd = PerlIO_fileno(fp); |
c07a80fd | 300 | if (IoTYPE(thatio) == 's') |
301 | IoTYPE(io) = 's'; | |
302 | } | |
303 | else | |
304 | fd = -1; | |
a0d0e21e | 305 | } |
fec02dd3 | 306 | if (dodup) |
3028581b | 307 | fd = PerlLIO_dup(fd); |
3500f679 RS |
308 | else |
309 | was_fdopen = TRUE; | |
760ac839 | 310 | if (!(fp = PerlIO_fdopen(fd,mode))) { |
c07a80fd | 311 | if (dodup) |
3028581b | 312 | PerlLIO_close(fd); |
faecd977 | 313 | } |
c07a80fd | 314 | } |
bf38876a | 315 | } |
c07a80fd | 316 | else { |
317 | /*SUPPRESS 530*/ | |
6170680b IZ |
318 | for (; isSPACE(*type); type++) ; |
319 | if (strEQ(type,"-")) { | |
760ac839 | 320 | fp = PerlIO_stdout(); |
c07a80fd | 321 | IoTYPE(io) = '-'; |
322 | } | |
323 | else { | |
6170680b | 324 | fp = PerlIO_open((num_svs ? name : type), mode); |
c07a80fd | 325 | } |
bf38876a LW |
326 | } |
327 | } | |
6170680b IZ |
328 | else if (*type == '<') { |
329 | if (num_svs && tlen != 1) | |
330 | goto unknown_desr; | |
c07a80fd | 331 | /*SUPPRESS 530*/ |
6170680b | 332 | for (type++; isSPACE(*type); type++) ; |
bf38876a | 333 | mode[0] = 'r'; |
6170680b IZ |
334 | if (*type == '&') { |
335 | name = type; | |
bf38876a | 336 | goto duplicity; |
6170680b IZ |
337 | } |
338 | if (strEQ(type,"-")) { | |
760ac839 | 339 | fp = PerlIO_stdin(); |
8990e307 | 340 | IoTYPE(io) = '-'; |
a687059c | 341 | } |
bf38876a | 342 | else |
6170680b | 343 | fp = PerlIO_open((num_svs ? name : type), mode); |
a687059c | 344 | } |
6170680b IZ |
345 | else if (tlen > 1 && type[tlen-1] == '|') { |
346 | if (num_svs) { | |
347 | if (tlen != 2 || type[0] != '-') | |
348 | goto unknown_desr; | |
349 | } | |
350 | else { | |
351 | type[--tlen] = '\0'; | |
352 | while (tlen && isSPACE(type[tlen-1])) | |
353 | type[--tlen] = '\0'; | |
354 | /*SUPPRESS 530*/ | |
355 | for (; isSPACE(*type); type++) ; | |
356 | name = type; | |
357 | } | |
06eaf0bc GS |
358 | if (*name == '\0') { /* command is missing 19990114 */ |
359 | dTHR; | |
360 | if (ckWARN(WARN_PIPE)) | |
cea2e8a9 | 361 | Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open"); |
06eaf0bc GS |
362 | errno = EPIPE; |
363 | goto say_false; | |
364 | } | |
6170680b | 365 | if (strNE(name,"-") || num_svs) |
79072805 LW |
366 | TAINT_ENV(); |
367 | TAINT_PROPER("piped open"); | |
3028581b | 368 | fp = PerlProc_popen(name,"r"); |
8990e307 | 369 | IoTYPE(io) = '|'; |
a687059c LW |
370 | } |
371 | else { | |
6170680b IZ |
372 | if (num_svs) |
373 | goto unknown_desr; | |
374 | name = type; | |
8990e307 | 375 | IoTYPE(io) = '<'; |
99b89507 LW |
376 | /*SUPPRESS 530*/ |
377 | for (; isSPACE(*name); name++) ; | |
a687059c | 378 | if (strEQ(name,"-")) { |
760ac839 | 379 | fp = PerlIO_stdin(); |
8990e307 | 380 | IoTYPE(io) = '-'; |
a687059c LW |
381 | } |
382 | else | |
760ac839 | 383 | fp = PerlIO_open(name,"r"); |
a687059c LW |
384 | } |
385 | } | |
bee1dbe2 | 386 | if (!fp) { |
d008e5eb | 387 | dTHR; |
599cee73 | 388 | if (ckWARN(WARN_NEWLINE) && IoTYPE(io) == '<' && strchr(name, '\n')) |
cea2e8a9 | 389 | Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "open"); |
6e21c824 | 390 | goto say_false; |
bee1dbe2 | 391 | } |
8990e307 LW |
392 | if (IoTYPE(io) && |
393 | IoTYPE(io) != '|' && IoTYPE(io) != '-') { | |
96827780 | 394 | dTHR; |
3280af22 | 395 | if (PerlLIO_fstat(PerlIO_fileno(fp),&PL_statbuf) < 0) { |
760ac839 | 396 | (void)PerlIO_close(fp); |
6e21c824 | 397 | goto say_false; |
a687059c | 398 | } |
3280af22 | 399 | if (S_ISSOCK(PL_statbuf.st_mode)) |
8990e307 | 400 | IoTYPE(io) = 's'; /* in case a socket was passed in to us */ |
99b89507 LW |
401 | #ifdef HAS_SOCKET |
402 | else if ( | |
c623bd54 | 403 | #ifdef S_IFMT |
3280af22 | 404 | !(PL_statbuf.st_mode & S_IFMT) |
99b89507 | 405 | #else |
b28d0864 | 406 | !PL_statbuf.st_mode |
99b89507 LW |
407 | #endif |
408 | ) { | |
96827780 MB |
409 | char tmpbuf[256]; |
410 | Sock_size_t buflen = sizeof tmpbuf; | |
3028581b | 411 | if (PerlSock_getsockname(PerlIO_fileno(fp), (struct sockaddr *)tmpbuf, |
d574b85e CS |
412 | &buflen) >= 0 |
413 | || errno != ENOTSOCK) | |
8990e307 | 414 | IoTYPE(io) = 's'; /* some OS's return 0 on fstat()ed socket */ |
99b89507 LW |
415 | /* but some return 0 for streams too, sigh */ |
416 | } | |
bf38876a | 417 | #endif |
a687059c | 418 | } |
6e21c824 | 419 | if (saveifp) { /* must use old fp? */ |
760ac839 | 420 | fd = PerlIO_fileno(saveifp); |
6e21c824 | 421 | if (saveofp) { |
760ac839 | 422 | PerlIO_flush(saveofp); /* emulate PerlIO_close() */ |
6e21c824 | 423 | if (saveofp != saveifp) { /* was a socket? */ |
760ac839 | 424 | PerlIO_close(saveofp); |
99b89507 LW |
425 | if (fd > 2) |
426 | Safefree(saveofp); | |
6e21c824 LW |
427 | } |
428 | } | |
760ac839 | 429 | if (fd != PerlIO_fileno(fp)) { |
d8a83dd3 | 430 | Pid_t pid; |
79072805 | 431 | SV *sv; |
bee1dbe2 | 432 | |
3028581b | 433 | PerlLIO_dup2(PerlIO_fileno(fp), fd); |
3280af22 | 434 | sv = *av_fetch(PL_fdpid,PerlIO_fileno(fp),TRUE); |
a0d0e21e | 435 | (void)SvUPGRADE(sv, SVt_IV); |
463ee0b2 LW |
436 | pid = SvIVX(sv); |
437 | SvIVX(sv) = 0; | |
3280af22 | 438 | sv = *av_fetch(PL_fdpid,fd,TRUE); |
a0d0e21e | 439 | (void)SvUPGRADE(sv, SVt_IV); |
463ee0b2 | 440 | SvIVX(sv) = pid; |
3500f679 RS |
441 | if (!was_fdopen) |
442 | PerlIO_close(fp); | |
bee1dbe2 | 443 | |
6e21c824 LW |
444 | } |
445 | fp = saveifp; | |
760ac839 | 446 | PerlIO_clearerr(fp); |
6e21c824 | 447 | } |
a0d0e21e | 448 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
a8710ca1 GS |
449 | { |
450 | int save_errno = errno; | |
451 | fd = PerlIO_fileno(fp); | |
452 | fcntl(fd,F_SETFD,fd > PL_maxsysfd); /* can change errno */ | |
453 | errno = save_errno; | |
454 | } | |
1462b684 | 455 | #endif |
8990e307 | 456 | IoIFP(io) = fp; |
684bef36 | 457 | IoFLAGS(io) &= ~IOf_NOLINE; |
bf38876a | 458 | if (writing) { |
96827780 | 459 | dTHR; |
8990e307 | 460 | if (IoTYPE(io) == 's' |
3280af22 | 461 | || (IoTYPE(io) == '>' && S_ISCHR(PL_statbuf.st_mode)) ) { |
760ac839 LW |
462 | if (!(IoOFP(io) = PerlIO_fdopen(PerlIO_fileno(fp),"w"))) { |
463 | PerlIO_close(fp); | |
8990e307 | 464 | IoIFP(io) = Nullfp; |
6e21c824 | 465 | goto say_false; |
fe14fcc3 | 466 | } |
1462b684 LW |
467 | } |
468 | else | |
8990e307 | 469 | IoOFP(io) = fp; |
bf38876a | 470 | } |
a687059c | 471 | return TRUE; |
6e21c824 LW |
472 | |
473 | say_false: | |
8990e307 LW |
474 | IoIFP(io) = saveifp; |
475 | IoOFP(io) = saveofp; | |
476 | IoTYPE(io) = savetype; | |
6e21c824 | 477 | return FALSE; |
a687059c LW |
478 | } |
479 | ||
760ac839 | 480 | PerlIO * |
864dbfa3 | 481 | Perl_nextargv(pTHX_ register GV *gv) |
a687059c | 482 | { |
79072805 | 483 | register SV *sv; |
99b89507 | 484 | #ifndef FLEXFILENAMES |
c623bd54 LW |
485 | int filedev; |
486 | int fileino; | |
99b89507 | 487 | #endif |
761237fe JB |
488 | Uid_t fileuid; |
489 | Gid_t filegid; | |
18708f5a | 490 | IO *io = GvIOp(gv); |
fe14fcc3 | 491 | |
3280af22 NIS |
492 | if (!PL_argvoutgv) |
493 | PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO); | |
18708f5a GS |
494 | if (io && (IoFLAGS(io) & IOf_ARGV) && (IoFLAGS(io) & IOf_START)) { |
495 | IoFLAGS(io) &= ~IOf_START; | |
7a1c5554 GS |
496 | if (PL_inplace) { |
497 | if (!PL_argvout_stack) | |
498 | PL_argvout_stack = newAV(); | |
18708f5a | 499 | av_push(PL_argvout_stack, SvREFCNT_inc(PL_defoutgv)); |
7a1c5554 | 500 | } |
18708f5a | 501 | } |
3280af22 NIS |
502 | if (PL_filemode & (S_ISUID|S_ISGID)) { |
503 | PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */ | |
fe14fcc3 | 504 | #ifdef HAS_FCHMOD |
3280af22 | 505 | (void)fchmod(PL_lastfd,PL_filemode); |
fe14fcc3 | 506 | #else |
b28d0864 | 507 | (void)PerlLIO_chmod(PL_oldname,PL_filemode); |
fe14fcc3 LW |
508 | #endif |
509 | } | |
3280af22 | 510 | PL_filemode = 0; |
79072805 | 511 | while (av_len(GvAV(gv)) >= 0) { |
11343788 | 512 | dTHR; |
85aff577 | 513 | STRLEN oldlen; |
79072805 | 514 | sv = av_shift(GvAV(gv)); |
8990e307 | 515 | SAVEFREESV(sv); |
79072805 LW |
516 | sv_setsv(GvSV(gv),sv); |
517 | SvSETMAGIC(GvSV(gv)); | |
3280af22 | 518 | PL_oldname = SvPVx(GvSV(gv), oldlen); |
9d116dd7 | 519 | if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) { |
3280af22 | 520 | if (PL_inplace) { |
79072805 | 521 | TAINT_PROPER("inplace open"); |
3280af22 | 522 | if (oldlen == 1 && *PL_oldname == '-') { |
4633a7c4 | 523 | setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO)); |
a0d0e21e | 524 | return IoIFP(GvIOp(gv)); |
c623bd54 | 525 | } |
99b89507 | 526 | #ifndef FLEXFILENAMES |
b28d0864 NIS |
527 | filedev = PL_statbuf.st_dev; |
528 | fileino = PL_statbuf.st_ino; | |
99b89507 | 529 | #endif |
3280af22 NIS |
530 | PL_filemode = PL_statbuf.st_mode; |
531 | fileuid = PL_statbuf.st_uid; | |
532 | filegid = PL_statbuf.st_gid; | |
533 | if (!S_ISREG(PL_filemode)) { | |
0453d815 PM |
534 | if (ckWARN_d(WARN_INPLACE)) |
535 | Perl_warner(aTHX_ WARN_INPLACE, | |
536 | "Can't do inplace edit: %s is not a regular file", | |
537 | PL_oldname ); | |
79072805 | 538 | do_close(gv,FALSE); |
c623bd54 LW |
539 | continue; |
540 | } | |
3280af22 NIS |
541 | if (*PL_inplace) { |
542 | char *star = strchr(PL_inplace, '*'); | |
2d259d92 | 543 | if (star) { |
3280af22 | 544 | char *begin = PL_inplace; |
2d259d92 CK |
545 | sv_setpvn(sv, "", 0); |
546 | do { | |
547 | sv_catpvn(sv, begin, star - begin); | |
3280af22 | 548 | sv_catpvn(sv, PL_oldname, oldlen); |
2d259d92 CK |
549 | begin = ++star; |
550 | } while ((star = strchr(begin, '*'))); | |
3d66d7bb GS |
551 | if (*begin) |
552 | sv_catpv(sv,begin); | |
2d259d92 CK |
553 | } |
554 | else { | |
3280af22 | 555 | sv_catpv(sv,PL_inplace); |
2d259d92 | 556 | } |
c623bd54 | 557 | #ifndef FLEXFILENAMES |
b28d0864 NIS |
558 | if (PerlLIO_stat(SvPVX(sv),&PL_statbuf) >= 0 |
559 | && PL_statbuf.st_dev == filedev | |
560 | && PL_statbuf.st_ino == fileino | |
39e571d4 LM |
561 | #ifdef DJGPP |
562 | || (_djstat_fail_bits & _STFAIL_TRUENAME)!=0 | |
563 | #endif | |
f248d071 GS |
564 | ) |
565 | { | |
566 | if (ckWARN_d(WARN_INPLACE)) | |
567 | Perl_warner(aTHX_ WARN_INPLACE, | |
568 | "Can't do inplace edit: %s would not be unique", | |
569 | SvPVX(sv)); | |
79072805 | 570 | do_close(gv,FALSE); |
c623bd54 LW |
571 | continue; |
572 | } | |
573 | #endif | |
fe14fcc3 | 574 | #ifdef HAS_RENAME |
d308986b | 575 | #if !defined(DOSISH) && !defined(__CYGWIN__) |
3280af22 | 576 | if (PerlLIO_rename(PL_oldname,SvPVX(sv)) < 0) { |
0453d815 PM |
577 | if (ckWARN_d(WARN_INPLACE)) |
578 | Perl_warner(aTHX_ WARN_INPLACE, | |
579 | "Can't rename %s to %s: %s, skipping file", | |
580 | PL_oldname, SvPVX(sv), Strerror(errno) ); | |
79072805 | 581 | do_close(gv,FALSE); |
c623bd54 LW |
582 | continue; |
583 | } | |
a687059c | 584 | #else |
79072805 | 585 | do_close(gv,FALSE); |
3028581b | 586 | (void)PerlLIO_unlink(SvPVX(sv)); |
b28d0864 | 587 | (void)PerlLIO_rename(PL_oldname,SvPVX(sv)); |
9d116dd7 | 588 | do_open(gv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,O_RDONLY,0,Nullfp); |
55497cff | 589 | #endif /* DOSISH */ |
ff8e2863 | 590 | #else |
463ee0b2 | 591 | (void)UNLINK(SvPVX(sv)); |
b28d0864 | 592 | if (link(PL_oldname,SvPVX(sv)) < 0) { |
0453d815 PM |
593 | if (ckWARN_d(WARN_INPLACE)) |
594 | Perl_warner(aTHX_ WARN_INPLACE, | |
595 | "Can't rename %s to %s: %s, skipping file", | |
596 | PL_oldname, SvPVX(sv), Strerror(errno) ); | |
79072805 | 597 | do_close(gv,FALSE); |
c623bd54 LW |
598 | continue; |
599 | } | |
b28d0864 | 600 | (void)UNLINK(PL_oldname); |
a687059c LW |
601 | #endif |
602 | } | |
603 | else { | |
a8c18271 | 604 | #if !defined(DOSISH) && !defined(AMIGAOS) |
edc7bc49 | 605 | # ifndef VMS /* Don't delete; use automatic file versioning */ |
3280af22 | 606 | if (UNLINK(PL_oldname) < 0) { |
0453d815 PM |
607 | if (ckWARN_d(WARN_INPLACE)) |
608 | Perl_warner(aTHX_ WARN_INPLACE, | |
609 | "Can't remove %s: %s, skipping file", | |
610 | PL_oldname, Strerror(errno) ); | |
79072805 | 611 | do_close(gv,FALSE); |
fe14fcc3 LW |
612 | continue; |
613 | } | |
edc7bc49 | 614 | # endif |
ff8e2863 | 615 | #else |
cea2e8a9 | 616 | Perl_croak(aTHX_ "Can't do inplace edit without backup"); |
ff8e2863 | 617 | #endif |
a687059c LW |
618 | } |
619 | ||
3280af22 NIS |
620 | sv_setpvn(sv,">",!PL_inplace); |
621 | sv_catpvn(sv,PL_oldname,oldlen); | |
748a9306 | 622 | SETERRNO(0,0); /* in case sprintf set errno */ |
4119ab01 HM |
623 | #ifdef VMS |
624 | if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0, | |
18708f5a | 625 | O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp)) |
4119ab01 | 626 | #else |
3280af22 | 627 | if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0, |
18708f5a | 628 | O_WRONLY|O_CREAT|OPEN_EXCL,0666,Nullfp)) |
4119ab01 | 629 | #endif |
18708f5a | 630 | { |
0453d815 PM |
631 | if (ckWARN_d(WARN_INPLACE)) |
632 | Perl_warner(aTHX_ WARN_INPLACE, "Can't do inplace edit on %s: %s", | |
633 | PL_oldname, Strerror(errno) ); | |
79072805 | 634 | do_close(gv,FALSE); |
fe14fcc3 LW |
635 | continue; |
636 | } | |
3280af22 NIS |
637 | setdefout(PL_argvoutgv); |
638 | PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv))); | |
639 | (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf); | |
fe14fcc3 | 640 | #ifdef HAS_FCHMOD |
3280af22 | 641 | (void)fchmod(PL_lastfd,PL_filemode); |
a687059c | 642 | #else |
3e3baf6d TB |
643 | # if !(defined(WIN32) && defined(__BORLANDC__)) |
644 | /* Borland runtime creates a readonly file! */ | |
b28d0864 | 645 | (void)PerlLIO_chmod(PL_oldname,PL_filemode); |
3e3baf6d | 646 | # endif |
a687059c | 647 | #endif |
3280af22 | 648 | if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) { |
fe14fcc3 | 649 | #ifdef HAS_FCHOWN |
3280af22 | 650 | (void)fchown(PL_lastfd,fileuid,filegid); |
a687059c | 651 | #else |
fe14fcc3 | 652 | #ifdef HAS_CHOWN |
b28d0864 | 653 | (void)PerlLIO_chown(PL_oldname,fileuid,filegid); |
a687059c | 654 | #endif |
b1248f16 | 655 | #endif |
fe14fcc3 | 656 | } |
a687059c | 657 | } |
a0d0e21e | 658 | return IoIFP(GvIOp(gv)); |
a687059c | 659 | } |
4d61ec05 GS |
660 | else { |
661 | dTHR; | |
662 | if (ckWARN_d(WARN_INPLACE)) { | |
663 | if (!S_ISREG(PL_statbuf.st_mode)) | |
664 | Perl_warner(aTHX_ WARN_INPLACE, | |
665 | "Can't do inplace edit: %s is not a regular file", | |
9a7dcd9c | 666 | PL_oldname); |
4d61ec05 | 667 | else |
9a7dcd9c | 668 | Perl_warner(aTHX_ WARN_INPLACE, "Can't open %s: %s", |
4d61ec05 GS |
669 | PL_oldname, Strerror(errno)); |
670 | } | |
671 | } | |
a687059c | 672 | } |
18708f5a GS |
673 | if (io && (IoFLAGS(io) & IOf_ARGV)) |
674 | IoFLAGS(io) |= IOf_START; | |
3280af22 NIS |
675 | if (PL_inplace) { |
676 | (void)do_close(PL_argvoutgv,FALSE); | |
7a1c5554 GS |
677 | if (io && (IoFLAGS(io) & IOf_ARGV) |
678 | && PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0) | |
679 | { | |
18708f5a GS |
680 | GV *oldout = (GV*)av_pop(PL_argvout_stack); |
681 | setdefout(oldout); | |
682 | SvREFCNT_dec(oldout); | |
683 | return Nullfp; | |
684 | } | |
4633a7c4 | 685 | setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO)); |
a687059c LW |
686 | } |
687 | return Nullfp; | |
688 | } | |
689 | ||
fe14fcc3 | 690 | #ifdef HAS_PIPE |
afd9f252 | 691 | void |
864dbfa3 | 692 | Perl_do_pipe(pTHX_ SV *sv, GV *rgv, GV *wgv) |
afd9f252 | 693 | { |
79072805 LW |
694 | register IO *rstio; |
695 | register IO *wstio; | |
afd9f252 LW |
696 | int fd[2]; |
697 | ||
79072805 | 698 | if (!rgv) |
afd9f252 | 699 | goto badexit; |
79072805 | 700 | if (!wgv) |
afd9f252 LW |
701 | goto badexit; |
702 | ||
a0d0e21e LW |
703 | rstio = GvIOn(rgv); |
704 | wstio = GvIOn(wgv); | |
afd9f252 | 705 | |
a0d0e21e | 706 | if (IoIFP(rstio)) |
79072805 | 707 | do_close(rgv,FALSE); |
a0d0e21e | 708 | if (IoIFP(wstio)) |
79072805 | 709 | do_close(wgv,FALSE); |
afd9f252 | 710 | |
3028581b | 711 | if (PerlProc_pipe(fd) < 0) |
afd9f252 | 712 | goto badexit; |
760ac839 LW |
713 | IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"); |
714 | IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"); | |
8990e307 LW |
715 | IoIFP(wstio) = IoOFP(wstio); |
716 | IoTYPE(rstio) = '<'; | |
717 | IoTYPE(wstio) = '>'; | |
718 | if (!IoIFP(rstio) || !IoOFP(wstio)) { | |
760ac839 | 719 | if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio)); |
3028581b | 720 | else PerlLIO_close(fd[0]); |
760ac839 | 721 | if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio)); |
3028581b | 722 | else PerlLIO_close(fd[1]); |
fe14fcc3 LW |
723 | goto badexit; |
724 | } | |
afd9f252 | 725 | |
3280af22 | 726 | sv_setsv(sv,&PL_sv_yes); |
afd9f252 LW |
727 | return; |
728 | ||
729 | badexit: | |
3280af22 | 730 | sv_setsv(sv,&PL_sv_undef); |
afd9f252 LW |
731 | return; |
732 | } | |
b1248f16 | 733 | #endif |
afd9f252 | 734 | |
517844ec | 735 | /* explicit renamed to avoid C++ conflict -- kja */ |
a687059c | 736 | bool |
864dbfa3 | 737 | Perl_do_close(pTHX_ GV *gv, bool not_implicit) |
a687059c | 738 | { |
1193dd27 IZ |
739 | bool retval; |
740 | IO *io; | |
a687059c | 741 | |
79072805 | 742 | if (!gv) |
3280af22 | 743 | gv = PL_argvgv; |
a0d0e21e | 744 | if (!gv || SvTYPE(gv) != SVt_PVGV) { |
1d2dff63 GS |
745 | if (not_implicit) |
746 | SETERRNO(EBADF,SS$_IVCHAN); | |
c2ab57d4 | 747 | return FALSE; |
99b89507 | 748 | } |
79072805 LW |
749 | io = GvIO(gv); |
750 | if (!io) { /* never opened */ | |
1d2dff63 | 751 | if (not_implicit) { |
d008e5eb | 752 | dTHR; |
599cee73 | 753 | if (ckWARN(WARN_UNOPENED)) |
cea2e8a9 | 754 | Perl_warner(aTHX_ WARN_UNOPENED, |
599cee73 | 755 | "Close on unopened file <%s>",GvENAME(gv)); |
1d2dff63 GS |
756 | SETERRNO(EBADF,SS$_IVCHAN); |
757 | } | |
a687059c LW |
758 | return FALSE; |
759 | } | |
f2b5be74 | 760 | retval = io_close(io, not_implicit); |
517844ec | 761 | if (not_implicit) { |
1193dd27 IZ |
762 | IoLINES(io) = 0; |
763 | IoPAGE(io) = 0; | |
764 | IoLINES_LEFT(io) = IoPAGE_LEN(io); | |
765 | } | |
766 | IoTYPE(io) = ' '; | |
767 | return retval; | |
768 | } | |
769 | ||
770 | bool | |
f2b5be74 | 771 | Perl_io_close(pTHX_ IO *io, bool not_implicit) |
1193dd27 IZ |
772 | { |
773 | bool retval = FALSE; | |
774 | int status; | |
775 | ||
8990e307 LW |
776 | if (IoIFP(io)) { |
777 | if (IoTYPE(io) == '|') { | |
3028581b | 778 | status = PerlProc_pclose(IoIFP(io)); |
f2b5be74 GS |
779 | if (not_implicit) { |
780 | STATUS_NATIVE_SET(status); | |
781 | retval = (STATUS_POSIX == 0); | |
782 | } | |
783 | else { | |
784 | retval = (status != -1); | |
785 | } | |
a687059c | 786 | } |
8990e307 | 787 | else if (IoTYPE(io) == '-') |
a687059c LW |
788 | retval = TRUE; |
789 | else { | |
8990e307 | 790 | if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */ |
760ac839 LW |
791 | retval = (PerlIO_close(IoOFP(io)) != EOF); |
792 | PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */ | |
c2ab57d4 LW |
793 | } |
794 | else | |
760ac839 | 795 | retval = (PerlIO_close(IoIFP(io)) != EOF); |
a687059c | 796 | } |
8990e307 | 797 | IoOFP(io) = IoIFP(io) = Nullfp; |
79072805 | 798 | } |
f2b5be74 | 799 | else if (not_implicit) { |
20408e3c GS |
800 | SETERRNO(EBADF,SS$_IVCHAN); |
801 | } | |
1193dd27 | 802 | |
a687059c LW |
803 | return retval; |
804 | } | |
805 | ||
806 | bool | |
864dbfa3 | 807 | Perl_do_eof(pTHX_ GV *gv) |
a687059c | 808 | { |
11343788 | 809 | dTHR; |
79072805 | 810 | register IO *io; |
a687059c LW |
811 | int ch; |
812 | ||
79072805 | 813 | io = GvIO(gv); |
a687059c | 814 | |
79072805 | 815 | if (!io) |
a687059c | 816 | return TRUE; |
af8c498a GS |
817 | else if (ckWARN(WARN_IO) |
818 | && (IoTYPE(io) == '>' || IoIFP(io) == PerlIO_stdout() | |
819 | || IoIFP(io) == PerlIO_stderr())) | |
820 | { | |
821 | SV* sv = sv_newmortal(); | |
822 | gv_efullname3(sv, gv, Nullch); | |
823 | Perl_warner(aTHX_ WARN_IO, "Filehandle %s opened only for output", | |
824 | SvPV_nolen(sv)); | |
825 | } | |
a687059c | 826 | |
8990e307 | 827 | while (IoIFP(io)) { |
a687059c | 828 | |
760ac839 | 829 | if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */ |
a20bf0c3 | 830 | if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */ |
760ac839 LW |
831 | return FALSE; /* this is the most usual case */ |
832 | } | |
a687059c | 833 | |
760ac839 | 834 | ch = PerlIO_getc(IoIFP(io)); |
a687059c | 835 | if (ch != EOF) { |
760ac839 | 836 | (void)PerlIO_ungetc(IoIFP(io),ch); |
a687059c LW |
837 | return FALSE; |
838 | } | |
760ac839 | 839 | if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) { |
a20bf0c3 JH |
840 | if (PerlIO_get_cnt(IoIFP(io)) < -1) |
841 | PerlIO_set_cnt(IoIFP(io),-1); | |
760ac839 | 842 | } |
533c011a | 843 | if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */ |
3280af22 | 844 | if (!nextargv(PL_argvgv)) /* get another fp handy */ |
a687059c LW |
845 | return TRUE; |
846 | } | |
847 | else | |
848 | return TRUE; /* normal fp, definitely end of file */ | |
849 | } | |
850 | return TRUE; | |
851 | } | |
852 | ||
5ff3f7a4 | 853 | Off_t |
864dbfa3 | 854 | Perl_do_tell(pTHX_ GV *gv) |
a687059c | 855 | { |
79072805 | 856 | register IO *io; |
96e4d5b1 | 857 | register PerlIO *fp; |
a687059c | 858 | |
96e4d5b1 | 859 | if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) { |
bee1dbe2 | 860 | #ifdef ULTRIX_STDIO_BOTCH |
96e4d5b1 | 861 | if (PerlIO_eof(fp)) |
862 | (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */ | |
bee1dbe2 | 863 | #endif |
8903cb82 | 864 | return PerlIO_tell(fp); |
96e4d5b1 | 865 | } |
d008e5eb GS |
866 | { |
867 | dTHR; | |
868 | if (ckWARN(WARN_UNOPENED)) | |
cea2e8a9 | 869 | Perl_warner(aTHX_ WARN_UNOPENED, "tell() on unopened file"); |
d008e5eb | 870 | } |
748a9306 | 871 | SETERRNO(EBADF,RMS$_IFI); |
5ff3f7a4 | 872 | return (Off_t)-1; |
a687059c LW |
873 | } |
874 | ||
875 | bool | |
864dbfa3 | 876 | Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence) |
a687059c | 877 | { |
79072805 | 878 | register IO *io; |
137443ea | 879 | register PerlIO *fp; |
a687059c | 880 | |
137443ea | 881 | if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) { |
bee1dbe2 | 882 | #ifdef ULTRIX_STDIO_BOTCH |
137443ea | 883 | if (PerlIO_eof(fp)) |
884 | (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */ | |
bee1dbe2 | 885 | #endif |
8903cb82 | 886 | return PerlIO_seek(fp, pos, whence) >= 0; |
137443ea | 887 | } |
d008e5eb GS |
888 | { |
889 | dTHR; | |
890 | if (ckWARN(WARN_UNOPENED)) | |
cea2e8a9 | 891 | Perl_warner(aTHX_ WARN_UNOPENED, "seek() on unopened file"); |
d008e5eb | 892 | } |
748a9306 | 893 | SETERRNO(EBADF,RMS$_IFI); |
a687059c LW |
894 | return FALSE; |
895 | } | |
896 | ||
97cc44eb | 897 | Off_t |
864dbfa3 | 898 | Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence) |
8903cb82 | 899 | { |
900 | register IO *io; | |
901 | register PerlIO *fp; | |
902 | ||
903 | if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) | |
3028581b | 904 | return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence); |
d008e5eb GS |
905 | { |
906 | dTHR; | |
907 | if (ckWARN(WARN_UNOPENED)) | |
cea2e8a9 | 908 | Perl_warner(aTHX_ WARN_UNOPENED, "sysseek() on unopened file"); |
d008e5eb | 909 | } |
8903cb82 | 910 | SETERRNO(EBADF,RMS$_IFI); |
d9b3e12d | 911 | return (Off_t)-1; |
8903cb82 | 912 | } |
913 | ||
6ff81951 | 914 | int |
864dbfa3 | 915 | Perl_do_binmode(pTHX_ PerlIO *fp, int iotype, int flag) |
6ff81951 GS |
916 | { |
917 | if (flag != TRUE) | |
cea2e8a9 | 918 | Perl_croak(aTHX_ "panic: unsetting binmode"); /* Not implemented yet */ |
6ff81951 | 919 | #ifdef DOSISH |
61ae2fbf | 920 | #if defined(atarist) || defined(__MINT__) |
6ff81951 GS |
921 | if (!PerlIO_flush(fp) && (fp->_flag |= _IOBIN)) |
922 | return 1; | |
923 | else | |
924 | return 0; | |
925 | #else | |
926 | if (PerlLIO_setmode(PerlIO_fileno(fp), OP_BINARY) != -1) { | |
927 | #if defined(WIN32) && defined(__BORLANDC__) | |
928 | /* The translation mode of the stream is maintained independent | |
929 | * of the translation mode of the fd in the Borland RTL (heavy | |
930 | * digging through their runtime sources reveal). User has to | |
931 | * set the mode explicitly for the stream (though they don't | |
932 | * document this anywhere). GSAR 97-5-24 | |
933 | */ | |
934 | PerlIO_seek(fp,0L,0); | |
873ef191 | 935 | ((FILE*)fp)->flags |= _F_BIN; |
6ff81951 GS |
936 | #endif |
937 | return 1; | |
938 | } | |
939 | else | |
940 | return 0; | |
941 | #endif | |
942 | #else | |
943 | #if defined(USEMYBINMODE) | |
1cab015a | 944 | if (my_binmode(fp,iotype) != FALSE) |
6ff81951 GS |
945 | return 1; |
946 | else | |
947 | return 0; | |
948 | #else | |
949 | return 1; | |
950 | #endif | |
951 | #endif | |
952 | } | |
953 | ||
a0d0e21e | 954 | #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP) |
c2ab57d4 | 955 | /* code courtesy of William Kucharski */ |
fe14fcc3 | 956 | #define HAS_CHSIZE |
6eb13c3b | 957 | |
517844ec | 958 | I32 my_chsize(fd, length) |
79072805 | 959 | I32 fd; /* file descriptor */ |
85e6fe83 | 960 | Off_t length; /* length to set file to */ |
6eb13c3b | 961 | { |
6eb13c3b LW |
962 | struct flock fl; |
963 | struct stat filebuf; | |
964 | ||
3028581b | 965 | if (PerlLIO_fstat(fd, &filebuf) < 0) |
6eb13c3b LW |
966 | return -1; |
967 | ||
968 | if (filebuf.st_size < length) { | |
969 | ||
970 | /* extend file length */ | |
971 | ||
3028581b | 972 | if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0) |
6eb13c3b LW |
973 | return -1; |
974 | ||
975 | /* write a "0" byte */ | |
976 | ||
3028581b | 977 | if ((PerlLIO_write(fd, "", 1)) != 1) |
6eb13c3b LW |
978 | return -1; |
979 | } | |
980 | else { | |
981 | /* truncate length */ | |
982 | ||
983 | fl.l_whence = 0; | |
984 | fl.l_len = 0; | |
985 | fl.l_start = length; | |
a0d0e21e | 986 | fl.l_type = F_WRLCK; /* write lock on file space */ |
6eb13c3b LW |
987 | |
988 | /* | |
a0d0e21e | 989 | * This relies on the UNDOCUMENTED F_FREESP argument to |
6eb13c3b LW |
990 | * fcntl(2), which truncates the file so that it ends at the |
991 | * position indicated by fl.l_start. | |
992 | * | |
993 | * Will minor miracles never cease? | |
994 | */ | |
995 | ||
a0d0e21e | 996 | if (fcntl(fd, F_FREESP, &fl) < 0) |
6eb13c3b LW |
997 | return -1; |
998 | ||
999 | } | |
1000 | ||
1001 | return 0; | |
1002 | } | |
a0d0e21e | 1003 | #endif /* F_FREESP */ |
ff8e2863 | 1004 | |
a687059c | 1005 | bool |
864dbfa3 | 1006 | Perl_do_print(pTHX_ register SV *sv, PerlIO *fp) |
a687059c LW |
1007 | { |
1008 | register char *tmps; | |
463ee0b2 | 1009 | STRLEN len; |
a687059c | 1010 | |
79072805 LW |
1011 | /* assuming fp is checked earlier */ |
1012 | if (!sv) | |
1013 | return TRUE; | |
3280af22 | 1014 | if (PL_ofmt) { |
8990e307 | 1015 | if (SvGMAGICAL(sv)) |
79072805 | 1016 | mg_get(sv); |
463ee0b2 | 1017 | if (SvIOK(sv) && SvIVX(sv) != 0) { |
65202027 | 1018 | PerlIO_printf(fp, PL_ofmt, (NV)SvIVX(sv)); |
760ac839 | 1019 | return !PerlIO_error(fp); |
79072805 | 1020 | } |
463ee0b2 | 1021 | if ( (SvNOK(sv) && SvNVX(sv) != 0.0) |
79072805 | 1022 | || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) { |
3280af22 | 1023 | PerlIO_printf(fp, PL_ofmt, SvNVX(sv)); |
760ac839 | 1024 | return !PerlIO_error(fp); |
79072805 | 1025 | } |
a687059c | 1026 | } |
79072805 LW |
1027 | switch (SvTYPE(sv)) { |
1028 | case SVt_NULL: | |
d008e5eb GS |
1029 | { |
1030 | dTHR; | |
1031 | if (ckWARN(WARN_UNINITIALIZED)) | |
b89fed5f | 1032 | report_uninit(); |
d008e5eb | 1033 | } |
ff8e2863 | 1034 | return TRUE; |
79072805 | 1035 | case SVt_IV: |
a0d0e21e LW |
1036 | if (SvIOK(sv)) { |
1037 | if (SvGMAGICAL(sv)) | |
1038 | mg_get(sv); | |
cf2093f6 | 1039 | if (SvIsUV(sv)) |
57def98f | 1040 | PerlIO_printf(fp, "%"UVuf, (UV)SvUVX(sv)); |
cf2093f6 | 1041 | else |
57def98f | 1042 | PerlIO_printf(fp, "%"IVdf, (IV)SvIVX(sv)); |
760ac839 | 1043 | return !PerlIO_error(fp); |
a0d0e21e LW |
1044 | } |
1045 | /* FALL THROUGH */ | |
79072805 | 1046 | default: |
463ee0b2 | 1047 | tmps = SvPV(sv, len); |
79072805 | 1048 | break; |
ff8e2863 | 1049 | } |
94e4c244 JH |
1050 | /* To detect whether the process is about to overstep its |
1051 | * filesize limit we would need getrlimit(). We could then | |
1052 | * also transparently raise the limit with setrlimit() -- | |
1053 | * but only until the system hard limit/the filesystem limit, | |
c5dd3cdd JH |
1054 | * at which we would get EPERM. Note that when using buffered |
1055 | * io the write failure can be delayed until the flush/close. --jhi */ | |
760ac839 | 1056 | if (len && (PerlIO_write(fp,tmps,len) == 0 || PerlIO_error(fp))) |
a687059c | 1057 | return FALSE; |
760ac839 | 1058 | return !PerlIO_error(fp); |
a687059c LW |
1059 | } |
1060 | ||
79072805 | 1061 | I32 |
cea2e8a9 | 1062 | Perl_my_stat(pTHX) |
a687059c | 1063 | { |
4e35701f | 1064 | djSP; |
79072805 | 1065 | IO *io; |
748a9306 | 1066 | GV* tmpgv; |
79072805 | 1067 | |
533c011a | 1068 | if (PL_op->op_flags & OPf_REF) { |
924508f0 | 1069 | EXTEND(SP,1); |
638eceb6 | 1070 | tmpgv = cGVOP_gv; |
748a9306 LW |
1071 | do_fstat: |
1072 | io = GvIO(tmpgv); | |
8990e307 | 1073 | if (io && IoIFP(io)) { |
3280af22 NIS |
1074 | PL_statgv = tmpgv; |
1075 | sv_setpv(PL_statname,""); | |
1076 | PL_laststype = OP_STAT; | |
1077 | return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache)); | |
a687059c LW |
1078 | } |
1079 | else { | |
3280af22 NIS |
1080 | if (tmpgv == PL_defgv) |
1081 | return PL_laststatval; | |
599cee73 | 1082 | if (ckWARN(WARN_UNOPENED)) |
cea2e8a9 | 1083 | Perl_warner(aTHX_ WARN_UNOPENED, "Stat on unopened file <%s>", |
748a9306 | 1084 | GvENAME(tmpgv)); |
3280af22 NIS |
1085 | PL_statgv = Nullgv; |
1086 | sv_setpv(PL_statname,""); | |
1087 | return (PL_laststatval = -1); | |
a687059c LW |
1088 | } |
1089 | } | |
1090 | else { | |
748a9306 | 1091 | SV* sv = POPs; |
4b74e3fb | 1092 | char *s; |
2d8e6c8d | 1093 | STRLEN n_a; |
79072805 | 1094 | PUTBACK; |
748a9306 LW |
1095 | if (SvTYPE(sv) == SVt_PVGV) { |
1096 | tmpgv = (GV*)sv; | |
1097 | goto do_fstat; | |
1098 | } | |
1099 | else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) { | |
1100 | tmpgv = (GV*)SvRV(sv); | |
1101 | goto do_fstat; | |
1102 | } | |
1103 | ||
2d8e6c8d | 1104 | s = SvPV(sv, n_a); |
3280af22 NIS |
1105 | PL_statgv = Nullgv; |
1106 | sv_setpv(PL_statname, s); | |
1107 | PL_laststype = OP_STAT; | |
1108 | PL_laststatval = PerlLIO_stat(s, &PL_statcache); | |
599cee73 | 1109 | if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(s, '\n')) |
cea2e8a9 | 1110 | Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "stat"); |
3280af22 | 1111 | return PL_laststatval; |
a687059c LW |
1112 | } |
1113 | } | |
1114 | ||
79072805 | 1115 | I32 |
cea2e8a9 | 1116 | Perl_my_lstat(pTHX) |
c623bd54 | 1117 | { |
4e35701f | 1118 | djSP; |
79072805 | 1119 | SV *sv; |
2d8e6c8d | 1120 | STRLEN n_a; |
533c011a | 1121 | if (PL_op->op_flags & OPf_REF) { |
924508f0 | 1122 | EXTEND(SP,1); |
638eceb6 | 1123 | if (cGVOP_gv == PL_defgv) { |
3280af22 | 1124 | if (PL_laststype != OP_LSTAT) |
cea2e8a9 | 1125 | Perl_croak(aTHX_ "The stat preceding -l _ wasn't an lstat"); |
3280af22 | 1126 | return PL_laststatval; |
fe14fcc3 | 1127 | } |
cea2e8a9 | 1128 | Perl_croak(aTHX_ "You can't use -l on a filehandle"); |
fe14fcc3 | 1129 | } |
c623bd54 | 1130 | |
3280af22 NIS |
1131 | PL_laststype = OP_LSTAT; |
1132 | PL_statgv = Nullgv; | |
79072805 LW |
1133 | sv = POPs; |
1134 | PUTBACK; | |
2d8e6c8d | 1135 | sv_setpv(PL_statname,SvPV(sv, n_a)); |
2d8e6c8d | 1136 | PL_laststatval = PerlLIO_lstat(SvPV(sv, n_a),&PL_statcache); |
2d8e6c8d | 1137 | if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n')) |
cea2e8a9 | 1138 | Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "lstat"); |
3280af22 | 1139 | return PL_laststatval; |
c623bd54 LW |
1140 | } |
1141 | ||
a687059c | 1142 | bool |
864dbfa3 | 1143 | Perl_do_aexec(pTHX_ SV *really, register SV **mark, register SV **sp) |
a687059c | 1144 | { |
d5a9bfb0 IZ |
1145 | return do_aexec5(really, mark, sp, 0, 0); |
1146 | } | |
1147 | ||
1148 | bool | |
2aa1486d GS |
1149 | Perl_do_aexec5(pTHX_ SV *really, register SV **mark, register SV **sp, |
1150 | int fd, int do_report) | |
d5a9bfb0 | 1151 | { |
cd39f2b6 JH |
1152 | #ifdef MACOS_TRADITIONAL |
1153 | Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system"); | |
1154 | #else | |
a687059c | 1155 | register char **a; |
a687059c | 1156 | char *tmps; |
2d8e6c8d | 1157 | STRLEN n_a; |
a687059c | 1158 | |
79072805 | 1159 | if (sp > mark) { |
11343788 | 1160 | dTHR; |
3280af22 NIS |
1161 | New(401,PL_Argv, sp - mark + 1, char*); |
1162 | a = PL_Argv; | |
79072805 LW |
1163 | while (++mark <= sp) { |
1164 | if (*mark) | |
2d8e6c8d | 1165 | *a++ = SvPVx(*mark, n_a); |
a687059c LW |
1166 | else |
1167 | *a++ = ""; | |
1168 | } | |
1169 | *a = Nullch; | |
3280af22 | 1170 | if (*PL_Argv[0] != '/') /* will execvp use PATH? */ |
79072805 | 1171 | TAINT_ENV(); /* testing IFS here is overkill, probably */ |
2d8e6c8d | 1172 | if (really && *(tmps = SvPV(really, n_a))) |
3280af22 | 1173 | PerlProc_execvp(tmps,PL_Argv); |
a687059c | 1174 | else |
3280af22 | 1175 | PerlProc_execvp(PL_Argv[0],PL_Argv); |
599cee73 | 1176 | if (ckWARN(WARN_EXEC)) |
cea2e8a9 | 1177 | Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s", |
599cee73 | 1178 | PL_Argv[0], Strerror(errno)); |
d5a9bfb0 IZ |
1179 | if (do_report) { |
1180 | int e = errno; | |
1181 | ||
1182 | PerlLIO_write(fd, (void*)&e, sizeof(int)); | |
1183 | PerlLIO_close(fd); | |
1184 | } | |
a687059c | 1185 | } |
bee1dbe2 | 1186 | do_execfree(); |
cd39f2b6 | 1187 | #endif |
a687059c LW |
1188 | return FALSE; |
1189 | } | |
1190 | ||
fe14fcc3 | 1191 | void |
864dbfa3 | 1192 | Perl_do_execfree(pTHX) |
ff8e2863 | 1193 | { |
3280af22 NIS |
1194 | if (PL_Argv) { |
1195 | Safefree(PL_Argv); | |
1196 | PL_Argv = Null(char **); | |
ff8e2863 | 1197 | } |
3280af22 NIS |
1198 | if (PL_Cmd) { |
1199 | Safefree(PL_Cmd); | |
1200 | PL_Cmd = Nullch; | |
ff8e2863 LW |
1201 | } |
1202 | } | |
1203 | ||
cd39f2b6 | 1204 | #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) |
760ac839 | 1205 | |
a687059c | 1206 | bool |
864dbfa3 | 1207 | Perl_do_exec(pTHX_ char *cmd) |
a687059c | 1208 | { |
e446cec8 IZ |
1209 | return do_exec3(cmd,0,0); |
1210 | } | |
1211 | ||
1212 | bool | |
864dbfa3 | 1213 | Perl_do_exec3(pTHX_ char *cmd, int fd, int do_report) |
e446cec8 | 1214 | { |
a687059c LW |
1215 | register char **a; |
1216 | register char *s; | |
a687059c LW |
1217 | char flags[10]; |
1218 | ||
748a9306 LW |
1219 | while (*cmd && isSPACE(*cmd)) |
1220 | cmd++; | |
1221 | ||
a687059c LW |
1222 | /* save an extra exec if possible */ |
1223 | ||
bf38876a | 1224 | #ifdef CSH |
3280af22 | 1225 | if (strnEQ(cmd,PL_cshname,PL_cshlen) && strnEQ(cmd+PL_cshlen," -c",3)) { |
a687059c | 1226 | strcpy(flags,"-c"); |
3280af22 | 1227 | s = cmd+PL_cshlen+3; |
a687059c LW |
1228 | if (*s == 'f') { |
1229 | s++; | |
1230 | strcat(flags,"f"); | |
1231 | } | |
1232 | if (*s == ' ') | |
1233 | s++; | |
1234 | if (*s++ == '\'') { | |
1235 | char *ncmd = s; | |
1236 | ||
1237 | while (*s) | |
1238 | s++; | |
1239 | if (s[-1] == '\n') | |
1240 | *--s = '\0'; | |
1241 | if (s[-1] == '\'') { | |
1242 | *--s = '\0'; | |
3280af22 | 1243 | PerlProc_execl(PL_cshname,"csh", flags,ncmd,(char*)0); |
a687059c LW |
1244 | *s = '\''; |
1245 | return FALSE; | |
1246 | } | |
1247 | } | |
1248 | } | |
bf38876a | 1249 | #endif /* CSH */ |
a687059c LW |
1250 | |
1251 | /* see if there are shell metacharacters in it */ | |
1252 | ||
748a9306 LW |
1253 | if (*cmd == '.' && isSPACE(cmd[1])) |
1254 | goto doshell; | |
1255 | ||
1256 | if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4])) | |
1257 | goto doshell; | |
1258 | ||
c170e444 | 1259 | for (s = cmd; *s && isALNUM(*s); s++) ; /* catch VAR=val gizmo */ |
63f2c1e1 LW |
1260 | if (*s == '=') |
1261 | goto doshell; | |
748a9306 | 1262 | |
a687059c | 1263 | for (s = cmd; *s; s++) { |
93a17b20 | 1264 | if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) { |
a687059c LW |
1265 | if (*s == '\n' && !s[1]) { |
1266 | *s = '\0'; | |
1267 | break; | |
1268 | } | |
603a98b0 IZ |
1269 | /* handle the 2>&1 construct at the end */ |
1270 | if (*s == '>' && s[1] == '&' && s[2] == '1' | |
1271 | && s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2]) | |
1272 | && (!s[3] || isSPACE(s[3]))) | |
1273 | { | |
1274 | char *t = s + 3; | |
1275 | ||
1276 | while (*t && isSPACE(*t)) | |
1277 | ++t; | |
1278 | if (!*t && (dup2(1,2) != -1)) { | |
1279 | s[-2] = '\0'; | |
1280 | break; | |
1281 | } | |
1282 | } | |
a687059c | 1283 | doshell: |
3280af22 | 1284 | PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0); |
a687059c LW |
1285 | return FALSE; |
1286 | } | |
1287 | } | |
748a9306 | 1288 | |
3280af22 NIS |
1289 | New(402,PL_Argv, (s - cmd) / 2 + 2, char*); |
1290 | PL_Cmd = savepvn(cmd, s-cmd); | |
1291 | a = PL_Argv; | |
1292 | for (s = PL_Cmd; *s;) { | |
99b89507 | 1293 | while (*s && isSPACE(*s)) s++; |
a687059c LW |
1294 | if (*s) |
1295 | *(a++) = s; | |
99b89507 | 1296 | while (*s && !isSPACE(*s)) s++; |
a687059c LW |
1297 | if (*s) |
1298 | *s++ = '\0'; | |
1299 | } | |
1300 | *a = Nullch; | |
3280af22 NIS |
1301 | if (PL_Argv[0]) { |
1302 | PerlProc_execvp(PL_Argv[0],PL_Argv); | |
b1248f16 | 1303 | if (errno == ENOEXEC) { /* for system V NIH syndrome */ |
ff8e2863 | 1304 | do_execfree(); |
a687059c | 1305 | goto doshell; |
b1248f16 | 1306 | } |
d008e5eb GS |
1307 | { |
1308 | dTHR; | |
e446cec8 IZ |
1309 | int e = errno; |
1310 | ||
d008e5eb | 1311 | if (ckWARN(WARN_EXEC)) |
cea2e8a9 | 1312 | Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s", |
d008e5eb | 1313 | PL_Argv[0], Strerror(errno)); |
e446cec8 IZ |
1314 | if (do_report) { |
1315 | PerlLIO_write(fd, (void*)&e, sizeof(int)); | |
1316 | PerlLIO_close(fd); | |
1317 | } | |
d008e5eb | 1318 | } |
a687059c | 1319 | } |
ff8e2863 | 1320 | do_execfree(); |
a687059c LW |
1321 | return FALSE; |
1322 | } | |
1323 | ||
6890e559 | 1324 | #endif /* OS2 || WIN32 */ |
760ac839 | 1325 | |
79072805 | 1326 | I32 |
864dbfa3 | 1327 | Perl_apply(pTHX_ I32 type, register SV **mark, register SV **sp) |
a687059c | 1328 | { |
11343788 | 1329 | dTHR; |
79072805 LW |
1330 | register I32 val; |
1331 | register I32 val2; | |
1332 | register I32 tot = 0; | |
20408e3c | 1333 | char *what; |
a687059c | 1334 | char *s; |
79072805 | 1335 | SV **oldmark = mark; |
2d8e6c8d | 1336 | STRLEN n_a; |
a687059c | 1337 | |
20408e3c | 1338 | #define APPLY_TAINT_PROPER() \ |
3280af22 | 1339 | STMT_START { \ |
17406bd6 | 1340 | if (PL_tainted) { TAINT_PROPER(what); } \ |
873ef191 | 1341 | } STMT_END |
20408e3c GS |
1342 | |
1343 | /* This is a first heuristic; it doesn't catch tainting magic. */ | |
3280af22 | 1344 | if (PL_tainting) { |
463ee0b2 | 1345 | while (++mark <= sp) { |
bbce6d69 | 1346 | if (SvTAINTED(*mark)) { |
1347 | TAINT; | |
1348 | break; | |
1349 | } | |
463ee0b2 LW |
1350 | } |
1351 | mark = oldmark; | |
1352 | } | |
a687059c | 1353 | switch (type) { |
79072805 | 1354 | case OP_CHMOD: |
20408e3c GS |
1355 | what = "chmod"; |
1356 | APPLY_TAINT_PROPER(); | |
79072805 | 1357 | if (++mark <= sp) { |
463ee0b2 | 1358 | val = SvIVx(*mark); |
20408e3c GS |
1359 | APPLY_TAINT_PROPER(); |
1360 | tot = sp - mark; | |
79072805 | 1361 | while (++mark <= sp) { |
2d8e6c8d | 1362 | char *name = SvPVx(*mark, n_a); |
20408e3c GS |
1363 | APPLY_TAINT_PROPER(); |
1364 | if (PerlLIO_chmod(name, val)) | |
a687059c LW |
1365 | tot--; |
1366 | } | |
1367 | } | |
1368 | break; | |
fe14fcc3 | 1369 | #ifdef HAS_CHOWN |
79072805 | 1370 | case OP_CHOWN: |
20408e3c GS |
1371 | what = "chown"; |
1372 | APPLY_TAINT_PROPER(); | |
79072805 | 1373 | if (sp - mark > 2) { |
463ee0b2 LW |
1374 | val = SvIVx(*++mark); |
1375 | val2 = SvIVx(*++mark); | |
20408e3c | 1376 | APPLY_TAINT_PROPER(); |
a0d0e21e | 1377 | tot = sp - mark; |
79072805 | 1378 | while (++mark <= sp) { |
2d8e6c8d | 1379 | char *name = SvPVx(*mark, n_a); |
20408e3c | 1380 | APPLY_TAINT_PROPER(); |
36660982 | 1381 | if (PerlLIO_chown(name, val, val2)) |
a687059c LW |
1382 | tot--; |
1383 | } | |
1384 | } | |
1385 | break; | |
b1248f16 | 1386 | #endif |
dd64f1c3 AD |
1387 | /* |
1388 | XXX Should we make lchown() directly available from perl? | |
1389 | For now, we'll let Configure test for HAS_LCHOWN, but do | |
1390 | nothing in the core. | |
1391 | --AD 5/1998 | |
1392 | */ | |
fe14fcc3 | 1393 | #ifdef HAS_KILL |
79072805 | 1394 | case OP_KILL: |
20408e3c GS |
1395 | what = "kill"; |
1396 | APPLY_TAINT_PROPER(); | |
55497cff | 1397 | if (mark == sp) |
1398 | break; | |
2d8e6c8d | 1399 | s = SvPVx(*++mark, n_a); |
79072805 LW |
1400 | if (isUPPER(*s)) { |
1401 | if (*s == 'S' && s[1] == 'I' && s[2] == 'G') | |
1402 | s += 3; | |
1403 | if (!(val = whichsig(s))) | |
cea2e8a9 | 1404 | Perl_croak(aTHX_ "Unrecognized signal name \"%s\"",s); |
79072805 LW |
1405 | } |
1406 | else | |
463ee0b2 | 1407 | val = SvIVx(*mark); |
20408e3c GS |
1408 | APPLY_TAINT_PROPER(); |
1409 | tot = sp - mark; | |
3595fcef | 1410 | #ifdef VMS |
1411 | /* kill() doesn't do process groups (job trees?) under VMS */ | |
1412 | if (val < 0) val = -val; | |
1413 | if (val == SIGKILL) { | |
1414 | # include <starlet.h> | |
1415 | /* Use native sys$delprc() to insure that target process is | |
1416 | * deleted; supervisor-mode images don't pay attention to | |
1417 | * CRTL's emulation of Unix-style signals and kill() | |
1418 | */ | |
1419 | while (++mark <= sp) { | |
1420 | I32 proc = SvIVx(*mark); | |
1421 | register unsigned long int __vmssts; | |
20408e3c | 1422 | APPLY_TAINT_PROPER(); |
3595fcef | 1423 | if (!((__vmssts = sys$delprc(&proc,0)) & 1)) { |
1424 | tot--; | |
1425 | switch (__vmssts) { | |
1426 | case SS$_NONEXPR: | |
1427 | case SS$_NOSUCHNODE: | |
1428 | SETERRNO(ESRCH,__vmssts); | |
1429 | break; | |
1430 | case SS$_NOPRIV: | |
1431 | SETERRNO(EPERM,__vmssts); | |
1432 | break; | |
1433 | default: | |
1434 | SETERRNO(EVMSERR,__vmssts); | |
1435 | } | |
1436 | } | |
1437 | } | |
1438 | break; | |
1439 | } | |
1440 | #endif | |
79072805 LW |
1441 | if (val < 0) { |
1442 | val = -val; | |
1443 | while (++mark <= sp) { | |
463ee0b2 | 1444 | I32 proc = SvIVx(*mark); |
20408e3c | 1445 | APPLY_TAINT_PROPER(); |
fe14fcc3 | 1446 | #ifdef HAS_KILLPG |
3028581b | 1447 | if (PerlProc_killpg(proc,val)) /* BSD */ |
a687059c | 1448 | #else |
3028581b | 1449 | if (PerlProc_kill(-proc,val)) /* SYSV */ |
a687059c | 1450 | #endif |
79072805 | 1451 | tot--; |
a687059c | 1452 | } |
79072805 LW |
1453 | } |
1454 | else { | |
1455 | while (++mark <= sp) { | |
20408e3c GS |
1456 | I32 proc = SvIVx(*mark); |
1457 | APPLY_TAINT_PROPER(); | |
1458 | if (PerlProc_kill(proc, val)) | |
79072805 | 1459 | tot--; |
a687059c LW |
1460 | } |
1461 | } | |
1462 | break; | |
b1248f16 | 1463 | #endif |
79072805 | 1464 | case OP_UNLINK: |
20408e3c GS |
1465 | what = "unlink"; |
1466 | APPLY_TAINT_PROPER(); | |
79072805 LW |
1467 | tot = sp - mark; |
1468 | while (++mark <= sp) { | |
2d8e6c8d | 1469 | s = SvPVx(*mark, n_a); |
20408e3c | 1470 | APPLY_TAINT_PROPER(); |
3280af22 | 1471 | if (PL_euid || PL_unsafe) { |
a687059c LW |
1472 | if (UNLINK(s)) |
1473 | tot--; | |
1474 | } | |
1475 | else { /* don't let root wipe out directories without -U */ | |
3280af22 | 1476 | if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode)) |
a687059c LW |
1477 | tot--; |
1478 | else { | |
1479 | if (UNLINK(s)) | |
1480 | tot--; | |
1481 | } | |
1482 | } | |
1483 | } | |
1484 | break; | |
a0d0e21e | 1485 | #ifdef HAS_UTIME |
79072805 | 1486 | case OP_UTIME: |
20408e3c GS |
1487 | what = "utime"; |
1488 | APPLY_TAINT_PROPER(); | |
79072805 | 1489 | if (sp - mark > 2) { |
748a9306 | 1490 | #if defined(I_UTIME) || defined(VMS) |
663a0e37 LW |
1491 | struct utimbuf utbuf; |
1492 | #else | |
a687059c | 1493 | struct { |
dd2821f6 GS |
1494 | Time_t actime; |
1495 | Time_t modtime; | |
a687059c | 1496 | } utbuf; |
663a0e37 | 1497 | #endif |
a687059c | 1498 | |
afd9f252 | 1499 | Zero(&utbuf, sizeof utbuf, char); |
517844ec | 1500 | #ifdef BIG_TIME |
dd2821f6 GS |
1501 | utbuf.actime = (Time_t)SvNVx(*++mark); /* time accessed */ |
1502 | utbuf.modtime = (Time_t)SvNVx(*++mark); /* time modified */ | |
517844ec | 1503 | #else |
dd2821f6 GS |
1504 | utbuf.actime = (Time_t)SvIVx(*++mark); /* time accessed */ |
1505 | utbuf.modtime = (Time_t)SvIVx(*++mark); /* time modified */ | |
517844ec | 1506 | #endif |
20408e3c | 1507 | APPLY_TAINT_PROPER(); |
79072805 LW |
1508 | tot = sp - mark; |
1509 | while (++mark <= sp) { | |
2d8e6c8d | 1510 | char *name = SvPVx(*mark, n_a); |
20408e3c GS |
1511 | APPLY_TAINT_PROPER(); |
1512 | if (PerlLIO_utime(name, &utbuf)) | |
a687059c LW |
1513 | tot--; |
1514 | } | |
a687059c LW |
1515 | } |
1516 | else | |
79072805 | 1517 | tot = 0; |
a687059c | 1518 | break; |
a0d0e21e | 1519 | #endif |
a687059c LW |
1520 | } |
1521 | return tot; | |
20408e3c | 1522 | |
20408e3c | 1523 | #undef APPLY_TAINT_PROPER |
a687059c LW |
1524 | } |
1525 | ||
1526 | /* Do the permissions allow some operation? Assumes statcache already set. */ | |
a0d0e21e | 1527 | #ifndef VMS /* VMS' cando is in vms.c */ |
7f4774ae JH |
1528 | bool |
1529 | Perl_cando(pTHX_ Mode_t mode, Uid_t effective, register Stat_t *statbufp) | |
1530 | /* Note: we use `effective' both for uids and gids. | |
1531 | * Here we are betting on Uid_t being equal or wider than Gid_t. */ | |
a687059c | 1532 | { |
bee1dbe2 | 1533 | #ifdef DOSISH |
fe14fcc3 LW |
1534 | /* [Comments and code from Len Reed] |
1535 | * MS-DOS "user" is similar to UNIX's "superuser," but can't write | |
1536 | * to write-protected files. The execute permission bit is set | |
1537 | * by the Miscrosoft C library stat() function for the following: | |
1538 | * .exe files | |
1539 | * .com files | |
1540 | * .bat files | |
1541 | * directories | |
1542 | * All files and directories are readable. | |
1543 | * Directories and special files, e.g. "CON", cannot be | |
1544 | * write-protected. | |
1545 | * [Comment by Tom Dinger -- a directory can have the write-protect | |
1546 | * bit set in the file system, but DOS permits changes to | |
1547 | * the directory anyway. In addition, all bets are off | |
1548 | * here for networked software, such as Novell and | |
1549 | * Sun's PC-NFS.] | |
1550 | */ | |
1551 | ||
bee1dbe2 LW |
1552 | /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat |
1553 | * too so it will actually look into the files for magic numbers | |
1554 | */ | |
7f4774ae | 1555 | return (mode & statbufp->st_mode) ? TRUE : FALSE; |
fe14fcc3 | 1556 | |
55497cff | 1557 | #else /* ! DOSISH */ |
3280af22 | 1558 | if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */ |
7f4774ae | 1559 | if (mode == S_IXUSR) { |
c623bd54 | 1560 | if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode)) |
a687059c LW |
1561 | return TRUE; |
1562 | } | |
1563 | else | |
1564 | return TRUE; /* root reads and writes anything */ | |
1565 | return FALSE; | |
1566 | } | |
3280af22 | 1567 | if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) { |
7f4774ae | 1568 | if (statbufp->st_mode & mode) |
a687059c LW |
1569 | return TRUE; /* ok as "user" */ |
1570 | } | |
d8eceb89 | 1571 | else if (ingroup(statbufp->st_gid,effective)) { |
7f4774ae | 1572 | if (statbufp->st_mode & mode >> 3) |
a687059c LW |
1573 | return TRUE; /* ok as "group" */ |
1574 | } | |
7f4774ae | 1575 | else if (statbufp->st_mode & mode >> 6) |
a687059c LW |
1576 | return TRUE; /* ok as "other" */ |
1577 | return FALSE; | |
55497cff | 1578 | #endif /* ! DOSISH */ |
a687059c | 1579 | } |
a0d0e21e | 1580 | #endif /* ! VMS */ |
a687059c | 1581 | |
d8eceb89 JH |
1582 | bool |
1583 | Perl_ingroup(pTHX_ Gid_t testgid, Uid_t effective) | |
a687059c | 1584 | { |
cd39f2b6 JH |
1585 | #ifdef MACOS_TRADITIONAL |
1586 | /* This is simply not correct for AppleShare, but fix it yerself. */ | |
1587 | return TRUE; | |
1588 | #else | |
3280af22 | 1589 | if (testgid == (effective ? PL_egid : PL_gid)) |
a687059c | 1590 | return TRUE; |
fe14fcc3 | 1591 | #ifdef HAS_GETGROUPS |
a687059c LW |
1592 | #ifndef NGROUPS |
1593 | #define NGROUPS 32 | |
1594 | #endif | |
1595 | { | |
a0d0e21e | 1596 | Groups_t gary[NGROUPS]; |
79072805 | 1597 | I32 anum; |
a687059c LW |
1598 | |
1599 | anum = getgroups(NGROUPS,gary); | |
1600 | while (--anum >= 0) | |
1601 | if (gary[anum] == testgid) | |
1602 | return TRUE; | |
1603 | } | |
1604 | #endif | |
1605 | return FALSE; | |
cd39f2b6 | 1606 | #endif |
a687059c | 1607 | } |
c2ab57d4 | 1608 | |
fe14fcc3 | 1609 | #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM) |
c2ab57d4 | 1610 | |
79072805 | 1611 | I32 |
864dbfa3 | 1612 | Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp) |
c2ab57d4 | 1613 | { |
11343788 | 1614 | dTHR; |
c2ab57d4 | 1615 | key_t key; |
79072805 | 1616 | I32 n, flags; |
c2ab57d4 | 1617 | |
463ee0b2 LW |
1618 | key = (key_t)SvNVx(*++mark); |
1619 | n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark); | |
1620 | flags = SvIVx(*++mark); | |
748a9306 | 1621 | SETERRNO(0,0); |
c2ab57d4 LW |
1622 | switch (optype) |
1623 | { | |
fe14fcc3 | 1624 | #ifdef HAS_MSG |
79072805 | 1625 | case OP_MSGGET: |
c2ab57d4 | 1626 | return msgget(key, flags); |
e5d73d77 | 1627 | #endif |
fe14fcc3 | 1628 | #ifdef HAS_SEM |
79072805 | 1629 | case OP_SEMGET: |
c2ab57d4 | 1630 | return semget(key, n, flags); |
e5d73d77 | 1631 | #endif |
fe14fcc3 | 1632 | #ifdef HAS_SHM |
79072805 | 1633 | case OP_SHMGET: |
c2ab57d4 | 1634 | return shmget(key, n, flags); |
e5d73d77 | 1635 | #endif |
fe14fcc3 | 1636 | #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
e5d73d77 | 1637 | default: |
cea2e8a9 | 1638 | Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]); |
e5d73d77 | 1639 | #endif |
c2ab57d4 LW |
1640 | } |
1641 | return -1; /* should never happen */ | |
1642 | } | |
1643 | ||
79072805 | 1644 | I32 |
864dbfa3 | 1645 | Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp) |
c2ab57d4 | 1646 | { |
11343788 | 1647 | dTHR; |
79072805 | 1648 | SV *astr; |
c2ab57d4 | 1649 | char *a; |
a0d0e21e LW |
1650 | I32 id, n, cmd, infosize, getinfo; |
1651 | I32 ret = -1; | |
c2ab57d4 | 1652 | |
463ee0b2 LW |
1653 | id = SvIVx(*++mark); |
1654 | n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0; | |
1655 | cmd = SvIVx(*++mark); | |
79072805 | 1656 | astr = *++mark; |
c2ab57d4 LW |
1657 | infosize = 0; |
1658 | getinfo = (cmd == IPC_STAT); | |
1659 | ||
1660 | switch (optype) | |
1661 | { | |
fe14fcc3 | 1662 | #ifdef HAS_MSG |
79072805 | 1663 | case OP_MSGCTL: |
c2ab57d4 LW |
1664 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1665 | infosize = sizeof(struct msqid_ds); | |
1666 | break; | |
e5d73d77 | 1667 | #endif |
fe14fcc3 | 1668 | #ifdef HAS_SHM |
79072805 | 1669 | case OP_SHMCTL: |
c2ab57d4 LW |
1670 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1671 | infosize = sizeof(struct shmid_ds); | |
1672 | break; | |
e5d73d77 | 1673 | #endif |
fe14fcc3 | 1674 | #ifdef HAS_SEM |
79072805 | 1675 | case OP_SEMCTL: |
39398f3f | 1676 | #ifdef Semctl |
c2ab57d4 LW |
1677 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1678 | infosize = sizeof(struct semid_ds); | |
1679 | else if (cmd == GETALL || cmd == SETALL) | |
1680 | { | |
8e591e46 | 1681 | struct semid_ds semds; |
bd89102f AD |
1682 | union semun semun; |
1683 | ||
84902520 | 1684 | semun.buf = &semds; |
c2ab57d4 | 1685 | getinfo = (cmd == GETALL); |
9b89d93d GB |
1686 | if (Semctl(id, 0, IPC_STAT, semun) == -1) |
1687 | return -1; | |
6e21c824 LW |
1688 | infosize = semds.sem_nsems * sizeof(short); |
1689 | /* "short" is technically wrong but much more portable | |
1690 | than guessing about u_?short(_t)? */ | |
c2ab57d4 | 1691 | } |
39398f3f | 1692 | #else |
cea2e8a9 | 1693 | Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]); |
39398f3f | 1694 | #endif |
c2ab57d4 | 1695 | break; |
e5d73d77 | 1696 | #endif |
fe14fcc3 | 1697 | #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
e5d73d77 | 1698 | default: |
cea2e8a9 | 1699 | Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]); |
e5d73d77 | 1700 | #endif |
c2ab57d4 LW |
1701 | } |
1702 | ||
1703 | if (infosize) | |
1704 | { | |
a0d0e21e | 1705 | STRLEN len; |
c2ab57d4 LW |
1706 | if (getinfo) |
1707 | { | |
a0d0e21e LW |
1708 | SvPV_force(astr, len); |
1709 | a = SvGROW(astr, infosize+1); | |
c2ab57d4 LW |
1710 | } |
1711 | else | |
1712 | { | |
463ee0b2 LW |
1713 | a = SvPV(astr, len); |
1714 | if (len != infosize) | |
cea2e8a9 | 1715 | Perl_croak(aTHX_ "Bad arg length for %s, is %lu, should be %ld", |
4ec43091 JH |
1716 | PL_op_desc[optype], |
1717 | (unsigned long)len, | |
1718 | (long)infosize); | |
c2ab57d4 LW |
1719 | } |
1720 | } | |
1721 | else | |
1722 | { | |
c030ccd9 | 1723 | IV i = SvIV(astr); |
56431972 | 1724 | a = INT2PTR(char *,i); /* ouch */ |
c2ab57d4 | 1725 | } |
748a9306 | 1726 | SETERRNO(0,0); |
c2ab57d4 LW |
1727 | switch (optype) |
1728 | { | |
fe14fcc3 | 1729 | #ifdef HAS_MSG |
79072805 | 1730 | case OP_MSGCTL: |
bee1dbe2 | 1731 | ret = msgctl(id, cmd, (struct msqid_ds *)a); |
c2ab57d4 | 1732 | break; |
e5d73d77 | 1733 | #endif |
fe14fcc3 | 1734 | #ifdef HAS_SEM |
bd89102f | 1735 | case OP_SEMCTL: { |
39398f3f | 1736 | #ifdef Semctl |
bd89102f AD |
1737 | union semun unsemds; |
1738 | ||
1739 | unsemds.buf = (struct semid_ds *)a; | |
1740 | ret = Semctl(id, n, cmd, unsemds); | |
39398f3f | 1741 | #else |
cea2e8a9 | 1742 | Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]); |
39398f3f | 1743 | #endif |
bd89102f | 1744 | } |
c2ab57d4 | 1745 | break; |
e5d73d77 | 1746 | #endif |
fe14fcc3 | 1747 | #ifdef HAS_SHM |
79072805 | 1748 | case OP_SHMCTL: |
bee1dbe2 | 1749 | ret = shmctl(id, cmd, (struct shmid_ds *)a); |
c2ab57d4 | 1750 | break; |
e5d73d77 | 1751 | #endif |
c2ab57d4 LW |
1752 | } |
1753 | if (getinfo && ret >= 0) { | |
79072805 LW |
1754 | SvCUR_set(astr, infosize); |
1755 | *SvEND(astr) = '\0'; | |
a0d0e21e | 1756 | SvSETMAGIC(astr); |
c2ab57d4 LW |
1757 | } |
1758 | return ret; | |
1759 | } | |
1760 | ||
79072805 | 1761 | I32 |
864dbfa3 | 1762 | Perl_do_msgsnd(pTHX_ SV **mark, SV **sp) |
c2ab57d4 | 1763 | { |
fe14fcc3 | 1764 | #ifdef HAS_MSG |
11343788 | 1765 | dTHR; |
79072805 | 1766 | SV *mstr; |
c2ab57d4 | 1767 | char *mbuf; |
79072805 | 1768 | I32 id, msize, flags; |
463ee0b2 | 1769 | STRLEN len; |
c2ab57d4 | 1770 | |
463ee0b2 | 1771 | id = SvIVx(*++mark); |
79072805 | 1772 | mstr = *++mark; |
463ee0b2 LW |
1773 | flags = SvIVx(*++mark); |
1774 | mbuf = SvPV(mstr, len); | |
1775 | if ((msize = len - sizeof(long)) < 0) | |
cea2e8a9 | 1776 | Perl_croak(aTHX_ "Arg too short for msgsnd"); |
748a9306 | 1777 | SETERRNO(0,0); |
bee1dbe2 | 1778 | return msgsnd(id, (struct msgbuf *)mbuf, msize, flags); |
e5d73d77 | 1779 | #else |
cea2e8a9 | 1780 | Perl_croak(aTHX_ "msgsnd not implemented"); |
e5d73d77 | 1781 | #endif |
c2ab57d4 LW |
1782 | } |
1783 | ||
79072805 | 1784 | I32 |
864dbfa3 | 1785 | Perl_do_msgrcv(pTHX_ SV **mark, SV **sp) |
c2ab57d4 | 1786 | { |
fe14fcc3 | 1787 | #ifdef HAS_MSG |
11343788 | 1788 | dTHR; |
79072805 | 1789 | SV *mstr; |
c2ab57d4 LW |
1790 | char *mbuf; |
1791 | long mtype; | |
79072805 | 1792 | I32 id, msize, flags, ret; |
463ee0b2 | 1793 | STRLEN len; |
79072805 | 1794 | |
463ee0b2 | 1795 | id = SvIVx(*++mark); |
79072805 | 1796 | mstr = *++mark; |
463ee0b2 LW |
1797 | msize = SvIVx(*++mark); |
1798 | mtype = (long)SvIVx(*++mark); | |
1799 | flags = SvIVx(*++mark); | |
a0d0e21e LW |
1800 | SvPV_force(mstr, len); |
1801 | mbuf = SvGROW(mstr, sizeof(long)+msize+1); | |
1802 | ||
748a9306 | 1803 | SETERRNO(0,0); |
bee1dbe2 | 1804 | ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags); |
c2ab57d4 | 1805 | if (ret >= 0) { |
79072805 LW |
1806 | SvCUR_set(mstr, sizeof(long)+ret); |
1807 | *SvEND(mstr) = '\0'; | |
c2ab57d4 LW |
1808 | } |
1809 | return ret; | |
e5d73d77 | 1810 | #else |
cea2e8a9 | 1811 | Perl_croak(aTHX_ "msgrcv not implemented"); |
e5d73d77 | 1812 | #endif |
c2ab57d4 LW |
1813 | } |
1814 | ||
79072805 | 1815 | I32 |
864dbfa3 | 1816 | Perl_do_semop(pTHX_ SV **mark, SV **sp) |
c2ab57d4 | 1817 | { |
fe14fcc3 | 1818 | #ifdef HAS_SEM |
11343788 | 1819 | dTHR; |
79072805 | 1820 | SV *opstr; |
c2ab57d4 | 1821 | char *opbuf; |
463ee0b2 LW |
1822 | I32 id; |
1823 | STRLEN opsize; | |
c2ab57d4 | 1824 | |
463ee0b2 | 1825 | id = SvIVx(*++mark); |
79072805 | 1826 | opstr = *++mark; |
463ee0b2 | 1827 | opbuf = SvPV(opstr, opsize); |
c2ab57d4 LW |
1828 | if (opsize < sizeof(struct sembuf) |
1829 | || (opsize % sizeof(struct sembuf)) != 0) { | |
748a9306 | 1830 | SETERRNO(EINVAL,LIB$_INVARG); |
c2ab57d4 LW |
1831 | return -1; |
1832 | } | |
748a9306 | 1833 | SETERRNO(0,0); |
6e21c824 | 1834 | return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf)); |
e5d73d77 | 1835 | #else |
cea2e8a9 | 1836 | Perl_croak(aTHX_ "semop not implemented"); |
e5d73d77 | 1837 | #endif |
c2ab57d4 LW |
1838 | } |
1839 | ||
79072805 | 1840 | I32 |
864dbfa3 | 1841 | Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp) |
c2ab57d4 | 1842 | { |
fe14fcc3 | 1843 | #ifdef HAS_SHM |
11343788 | 1844 | dTHR; |
79072805 | 1845 | SV *mstr; |
c2ab57d4 | 1846 | char *mbuf, *shm; |
79072805 | 1847 | I32 id, mpos, msize; |
463ee0b2 | 1848 | STRLEN len; |
c2ab57d4 | 1849 | struct shmid_ds shmds; |
c2ab57d4 | 1850 | |
463ee0b2 | 1851 | id = SvIVx(*++mark); |
79072805 | 1852 | mstr = *++mark; |
463ee0b2 LW |
1853 | mpos = SvIVx(*++mark); |
1854 | msize = SvIVx(*++mark); | |
748a9306 | 1855 | SETERRNO(0,0); |
c2ab57d4 LW |
1856 | if (shmctl(id, IPC_STAT, &shmds) == -1) |
1857 | return -1; | |
1858 | if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) { | |
748a9306 | 1859 | SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */ |
c2ab57d4 LW |
1860 | return -1; |
1861 | } | |
8ac85365 | 1862 | shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0); |
c2ab57d4 LW |
1863 | if (shm == (char *)-1) /* I hate System V IPC, I really do */ |
1864 | return -1; | |
79072805 | 1865 | if (optype == OP_SHMREAD) { |
a0d0e21e LW |
1866 | SvPV_force(mstr, len); |
1867 | mbuf = SvGROW(mstr, msize+1); | |
1868 | ||
bee1dbe2 | 1869 | Copy(shm + mpos, mbuf, msize, char); |
79072805 LW |
1870 | SvCUR_set(mstr, msize); |
1871 | *SvEND(mstr) = '\0'; | |
a0d0e21e | 1872 | SvSETMAGIC(mstr); |
c2ab57d4 LW |
1873 | } |
1874 | else { | |
79072805 | 1875 | I32 n; |
c2ab57d4 | 1876 | |
a0d0e21e | 1877 | mbuf = SvPV(mstr, len); |
463ee0b2 | 1878 | if ((n = len) > msize) |
c2ab57d4 | 1879 | n = msize; |
bee1dbe2 | 1880 | Copy(mbuf, shm + mpos, n, char); |
c2ab57d4 | 1881 | if (n < msize) |
bee1dbe2 | 1882 | memzero(shm + mpos + n, msize - n); |
c2ab57d4 LW |
1883 | } |
1884 | return shmdt(shm); | |
e5d73d77 | 1885 | #else |
cea2e8a9 | 1886 | Perl_croak(aTHX_ "shm I/O not implemented"); |
e5d73d77 | 1887 | #endif |
c2ab57d4 LW |
1888 | } |
1889 | ||
fe14fcc3 | 1890 | #endif /* SYSV IPC */ |
4e35701f | 1891 |