Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* doio.c |
a687059c | 2 | * |
a0d0e21e | 3 | * Copyright (c) 1991-1994, 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" | |
18 | #include "perl.h" | |
19 | ||
fe14fcc3 | 20 | #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM) |
c2ab57d4 | 21 | #include <sys/ipc.h> |
fe14fcc3 | 22 | #ifdef HAS_MSG |
c2ab57d4 | 23 | #include <sys/msg.h> |
e5d73d77 | 24 | #endif |
fe14fcc3 | 25 | #ifdef HAS_SEM |
c2ab57d4 | 26 | #include <sys/sem.h> |
e5d73d77 | 27 | #endif |
fe14fcc3 | 28 | #ifdef HAS_SHM |
c2ab57d4 | 29 | #include <sys/shm.h> |
a0d0e21e LW |
30 | # ifndef HAS_SHMAT_PROTOTYPE |
31 | extern Shmat_t shmat _((int, char *, int)); | |
32 | # endif | |
c2ab57d4 | 33 | #endif |
e5d73d77 | 34 | #endif |
c2ab57d4 | 35 | |
663a0e37 LW |
36 | #ifdef I_UTIME |
37 | #include <utime.h> | |
38 | #endif | |
ff8e2863 LW |
39 | #ifdef I_FCNTL |
40 | #include <fcntl.h> | |
41 | #endif | |
fe14fcc3 LW |
42 | #ifdef I_SYS_FILE |
43 | #include <sys/file.h> | |
44 | #endif | |
a687059c | 45 | |
76121258 | 46 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) |
47 | #include <signal.h> | |
48 | #endif | |
49 | ||
50 | /* XXX If this causes problems, set i_unistd=undef in the hint file. */ | |
51 | #ifdef I_UNISTD | |
52 | # include <unistd.h> | |
53 | #endif | |
54 | ||
232e078e AD |
55 | #if defined(HAS_SOCKET) && !defined(VMS) /* VMS handles sockets via vmsish.h */ |
56 | # include <sys/socket.h> | |
57 | # include <netdb.h> | |
58 | # ifndef ENOTSOCK | |
59 | # ifdef I_NET_ERRNO | |
60 | # include <net/errno.h> | |
61 | # endif | |
62 | # endif | |
63 | #endif | |
64 | ||
a687059c | 65 | bool |
c07a80fd | 66 | do_open(gv,name,len,as_raw,rawmode,rawperm,supplied_fp) |
79072805 | 67 | GV *gv; |
a687059c | 68 | register char *name; |
79072805 | 69 | I32 len; |
c07a80fd | 70 | int as_raw; |
71 | int rawmode, rawperm; | |
760ac839 | 72 | PerlIO *supplied_fp; |
a687059c | 73 | { |
a0d0e21e | 74 | register IO *io = GvIOn(gv); |
760ac839 LW |
75 | PerlIO *saveifp = Nullfp; |
76 | PerlIO *saveofp = Nullfp; | |
6e21c824 | 77 | char savetype = ' '; |
c07a80fd | 78 | int writing = 0; |
760ac839 | 79 | PerlIO *fp; |
c07a80fd | 80 | int fd; |
81 | int result; | |
a687059c | 82 | |
a687059c | 83 | forkprocess = 1; /* assume true if no fork */ |
c07a80fd | 84 | |
a0d0e21e | 85 | if (IoIFP(io)) { |
760ac839 | 86 | fd = PerlIO_fileno(IoIFP(io)); |
8990e307 | 87 | if (IoTYPE(io) == '-') |
c2ab57d4 | 88 | result = 0; |
6e21c824 | 89 | else if (fd <= maxsysfd) { |
8990e307 LW |
90 | saveifp = IoIFP(io); |
91 | saveofp = IoOFP(io); | |
92 | savetype = IoTYPE(io); | |
6e21c824 LW |
93 | result = 0; |
94 | } | |
8990e307 LW |
95 | else if (IoTYPE(io) == '|') |
96 | result = my_pclose(IoIFP(io)); | |
97 | else if (IoIFP(io) != IoOFP(io)) { | |
98 | if (IoOFP(io)) { | |
760ac839 LW |
99 | result = PerlIO_close(IoOFP(io)); |
100 | PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */ | |
c2ab57d4 LW |
101 | } |
102 | else | |
760ac839 | 103 | result = PerlIO_close(IoIFP(io)); |
a687059c | 104 | } |
a687059c | 105 | else |
760ac839 | 106 | result = PerlIO_close(IoIFP(io)); |
6e21c824 | 107 | if (result == EOF && fd > maxsysfd) |
760ac839 | 108 | PerlIO_printf(PerlIO_stderr(), "Warning: unable to close filehandle %s properly.\n", |
79072805 | 109 | GvENAME(gv)); |
8990e307 | 110 | IoOFP(io) = IoIFP(io) = Nullfp; |
a687059c | 111 | } |
c07a80fd | 112 | |
113 | if (as_raw) { | |
114 | result = rawmode & 3; | |
115 | IoTYPE(io) = "<>++"[result]; | |
116 | writing = (result > 0); | |
117 | fd = open(name, rawmode, rawperm); | |
118 | if (fd == -1) | |
119 | fp = NULL; | |
120 | else { | |
360e5741 CS |
121 | char *fpmode; |
122 | if (result == 0) | |
123 | fpmode = "r"; | |
124 | #ifdef O_APPEND | |
125 | else if (rawmode & O_APPEND) | |
126 | fpmode = (result == 1) ? "a" : "a+"; | |
127 | #endif | |
128 | else | |
129 | fpmode = (result == 1) ? "w" : "r+"; | |
130 | fp = PerlIO_fdopen(fd, fpmode); | |
c07a80fd | 131 | if (!fp) |
132 | close(fd); | |
133 | } | |
a687059c | 134 | } |
c07a80fd | 135 | else { |
136 | char *myname; | |
137 | char mode[3]; /* stdio file mode ("r\0" or "r+\0") */ | |
138 | int dodup; | |
139 | ||
140 | myname = savepvn(name, len); | |
141 | SAVEFREEPV(myname); | |
142 | name = myname; | |
143 | while (len && isSPACE(name[len-1])) | |
144 | name[--len] = '\0'; | |
145 | ||
146 | mode[0] = mode[1] = mode[2] = '\0'; | |
147 | IoTYPE(io) = *name; | |
148 | if (*name == '+' && len > 1 && name[len-1] != '|') { /* scary */ | |
149 | mode[1] = *name++; | |
150 | --len; | |
151 | writing = 1; | |
a687059c | 152 | } |
c07a80fd | 153 | |
154 | if (*name == '|') { | |
155 | /*SUPPRESS 530*/ | |
156 | for (name++; isSPACE(*name); name++) ; | |
157 | if (strNE(name,"-")) | |
158 | TAINT_ENV(); | |
159 | TAINT_PROPER("piped open"); | |
160 | if (dowarn && name[strlen(name)-1] == '|') | |
161 | warn("Can't do bidirectional pipe"); | |
162 | fp = my_popen(name,"w"); | |
163 | writing = 1; | |
164 | } | |
165 | else if (*name == '>') { | |
166 | TAINT_PROPER("open"); | |
bf38876a | 167 | name++; |
c07a80fd | 168 | if (*name == '>') { |
169 | mode[0] = IoTYPE(io) = 'a'; | |
bf38876a | 170 | name++; |
a0d0e21e | 171 | } |
c07a80fd | 172 | else |
173 | mode[0] = 'w'; | |
174 | writing = 1; | |
175 | ||
176 | if (*name == '&') { | |
177 | duplicity: | |
178 | dodup = 1; | |
179 | name++; | |
180 | if (*name == '=') { | |
181 | dodup = 0; | |
a0d0e21e | 182 | name++; |
c07a80fd | 183 | } |
184 | if (!*name && supplied_fp) | |
185 | fp = supplied_fp; | |
a0d0e21e | 186 | else { |
c07a80fd | 187 | /*SUPPRESS 530*/ |
188 | for (; isSPACE(*name); name++) ; | |
189 | if (isDIGIT(*name)) | |
190 | fd = atoi(name); | |
191 | else { | |
192 | IO* thatio; | |
193 | gv = gv_fetchpv(name,FALSE,SVt_PVIO); | |
194 | thatio = GvIO(gv); | |
195 | if (!thatio) { | |
6e21c824 | 196 | #ifdef EINVAL |
c07a80fd | 197 | SETERRNO(EINVAL,SS$_IVCHAN); |
6e21c824 | 198 | #endif |
c07a80fd | 199 | goto say_false; |
200 | } | |
201 | if (IoIFP(thatio)) { | |
760ac839 | 202 | fd = PerlIO_fileno(IoIFP(thatio)); |
c07a80fd | 203 | if (IoTYPE(thatio) == 's') |
204 | IoTYPE(io) = 's'; | |
205 | } | |
206 | else | |
207 | fd = -1; | |
a0d0e21e | 208 | } |
fec02dd3 | 209 | if (dodup) |
c07a80fd | 210 | fd = dup(fd); |
760ac839 | 211 | if (!(fp = PerlIO_fdopen(fd,mode))) { |
c07a80fd | 212 | if (dodup) |
213 | close(fd); | |
517844ec | 214 | } |
c07a80fd | 215 | } |
bf38876a | 216 | } |
c07a80fd | 217 | else { |
218 | /*SUPPRESS 530*/ | |
219 | for (; isSPACE(*name); name++) ; | |
220 | if (strEQ(name,"-")) { | |
760ac839 | 221 | fp = PerlIO_stdout(); |
c07a80fd | 222 | IoTYPE(io) = '-'; |
223 | } | |
224 | else { | |
760ac839 | 225 | fp = PerlIO_open(name,mode); |
c07a80fd | 226 | } |
bf38876a LW |
227 | } |
228 | } | |
c07a80fd | 229 | else if (*name == '<') { |
230 | /*SUPPRESS 530*/ | |
231 | for (name++; isSPACE(*name); name++) ; | |
bf38876a | 232 | mode[0] = 'r'; |
bf38876a LW |
233 | if (*name == '&') |
234 | goto duplicity; | |
a687059c | 235 | if (strEQ(name,"-")) { |
760ac839 | 236 | fp = PerlIO_stdin(); |
8990e307 | 237 | IoTYPE(io) = '-'; |
a687059c | 238 | } |
bf38876a | 239 | else |
760ac839 | 240 | fp = PerlIO_open(name,mode); |
a687059c LW |
241 | } |
242 | else if (name[len-1] == '|') { | |
a687059c | 243 | name[--len] = '\0'; |
99b89507 | 244 | while (len && isSPACE(name[len-1])) |
a687059c | 245 | name[--len] = '\0'; |
99b89507 LW |
246 | /*SUPPRESS 530*/ |
247 | for (; isSPACE(*name); name++) ; | |
79072805 LW |
248 | if (strNE(name,"-")) |
249 | TAINT_ENV(); | |
250 | TAINT_PROPER("piped open"); | |
251 | fp = my_popen(name,"r"); | |
8990e307 | 252 | IoTYPE(io) = '|'; |
a687059c LW |
253 | } |
254 | else { | |
8990e307 | 255 | IoTYPE(io) = '<'; |
99b89507 LW |
256 | /*SUPPRESS 530*/ |
257 | for (; isSPACE(*name); name++) ; | |
a687059c | 258 | if (strEQ(name,"-")) { |
760ac839 | 259 | fp = PerlIO_stdin(); |
8990e307 | 260 | IoTYPE(io) = '-'; |
a687059c LW |
261 | } |
262 | else | |
760ac839 | 263 | fp = PerlIO_open(name,"r"); |
a687059c LW |
264 | } |
265 | } | |
bee1dbe2 | 266 | if (!fp) { |
8990e307 | 267 | if (dowarn && IoTYPE(io) == '<' && strchr(name, '\n')) |
bee1dbe2 | 268 | warn(warn_nl, "open"); |
6e21c824 | 269 | goto say_false; |
bee1dbe2 | 270 | } |
8990e307 LW |
271 | if (IoTYPE(io) && |
272 | IoTYPE(io) != '|' && IoTYPE(io) != '-') { | |
760ac839 LW |
273 | if (Fstat(PerlIO_fileno(fp),&statbuf) < 0) { |
274 | (void)PerlIO_close(fp); | |
6e21c824 | 275 | goto say_false; |
a687059c | 276 | } |
1462b684 | 277 | if (S_ISSOCK(statbuf.st_mode)) |
8990e307 | 278 | IoTYPE(io) = 's'; /* in case a socket was passed in to us */ |
99b89507 LW |
279 | #ifdef HAS_SOCKET |
280 | else if ( | |
c623bd54 | 281 | #ifdef S_IFMT |
99b89507 LW |
282 | !(statbuf.st_mode & S_IFMT) |
283 | #else | |
284 | !statbuf.st_mode | |
285 | #endif | |
286 | ) { | |
a0d0e21e | 287 | int buflen = sizeof tokenbuf; |
760ac839 | 288 | if (getsockname(PerlIO_fileno(fp), (struct sockaddr *)tokenbuf, &buflen) >= 0 |
bee1dbe2 | 289 | || errno != ENOTSOCK) |
8990e307 | 290 | IoTYPE(io) = 's'; /* some OS's return 0 on fstat()ed socket */ |
99b89507 LW |
291 | /* but some return 0 for streams too, sigh */ |
292 | } | |
bf38876a | 293 | #endif |
a687059c | 294 | } |
6e21c824 | 295 | if (saveifp) { /* must use old fp? */ |
760ac839 | 296 | fd = PerlIO_fileno(saveifp); |
6e21c824 | 297 | if (saveofp) { |
760ac839 | 298 | PerlIO_flush(saveofp); /* emulate PerlIO_close() */ |
6e21c824 | 299 | if (saveofp != saveifp) { /* was a socket? */ |
760ac839 | 300 | PerlIO_close(saveofp); |
99b89507 LW |
301 | if (fd > 2) |
302 | Safefree(saveofp); | |
6e21c824 LW |
303 | } |
304 | } | |
760ac839 | 305 | if (fd != PerlIO_fileno(fp)) { |
bee1dbe2 | 306 | int pid; |
79072805 | 307 | SV *sv; |
bee1dbe2 | 308 | |
760ac839 LW |
309 | dup2(PerlIO_fileno(fp), fd); |
310 | sv = *av_fetch(fdpid,PerlIO_fileno(fp),TRUE); | |
a0d0e21e | 311 | (void)SvUPGRADE(sv, SVt_IV); |
463ee0b2 LW |
312 | pid = SvIVX(sv); |
313 | SvIVX(sv) = 0; | |
79072805 | 314 | sv = *av_fetch(fdpid,fd,TRUE); |
a0d0e21e | 315 | (void)SvUPGRADE(sv, SVt_IV); |
463ee0b2 | 316 | SvIVX(sv) = pid; |
760ac839 | 317 | PerlIO_close(fp); |
bee1dbe2 | 318 | |
6e21c824 LW |
319 | } |
320 | fp = saveifp; | |
760ac839 | 321 | PerlIO_clearerr(fp); |
6e21c824 | 322 | } |
a0d0e21e | 323 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
760ac839 | 324 | fd = PerlIO_fileno(fp); |
a0d0e21e | 325 | fcntl(fd,F_SETFD,fd > maxsysfd); |
1462b684 | 326 | #endif |
8990e307 | 327 | IoIFP(io) = fp; |
bf38876a | 328 | if (writing) { |
8990e307 LW |
329 | if (IoTYPE(io) == 's' |
330 | || (IoTYPE(io) == '>' && S_ISCHR(statbuf.st_mode)) ) { | |
760ac839 LW |
331 | if (!(IoOFP(io) = PerlIO_fdopen(PerlIO_fileno(fp),"w"))) { |
332 | PerlIO_close(fp); | |
8990e307 | 333 | IoIFP(io) = Nullfp; |
6e21c824 | 334 | goto say_false; |
fe14fcc3 | 335 | } |
1462b684 LW |
336 | } |
337 | else | |
8990e307 | 338 | IoOFP(io) = fp; |
bf38876a | 339 | } |
a687059c | 340 | return TRUE; |
6e21c824 LW |
341 | |
342 | say_false: | |
8990e307 LW |
343 | IoIFP(io) = saveifp; |
344 | IoOFP(io) = saveofp; | |
345 | IoTYPE(io) = savetype; | |
6e21c824 | 346 | return FALSE; |
a687059c LW |
347 | } |
348 | ||
760ac839 | 349 | PerlIO * |
79072805 LW |
350 | nextargv(gv) |
351 | register GV *gv; | |
a687059c | 352 | { |
79072805 | 353 | register SV *sv; |
99b89507 | 354 | #ifndef FLEXFILENAMES |
c623bd54 LW |
355 | int filedev; |
356 | int fileino; | |
99b89507 | 357 | #endif |
c623bd54 LW |
358 | int fileuid; |
359 | int filegid; | |
fe14fcc3 | 360 | |
79072805 | 361 | if (!argvoutgv) |
85e6fe83 | 362 | argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO); |
fe14fcc3 | 363 | if (filemode & (S_ISUID|S_ISGID)) { |
760ac839 | 364 | PerlIO_flush(IoIFP(GvIOn(argvoutgv))); /* chmod must follow last write */ |
fe14fcc3 LW |
365 | #ifdef HAS_FCHMOD |
366 | (void)fchmod(lastfd,filemode); | |
367 | #else | |
368 | (void)chmod(oldname,filemode); | |
369 | #endif | |
370 | } | |
371 | filemode = 0; | |
79072805 | 372 | while (av_len(GvAV(gv)) >= 0) { |
463ee0b2 | 373 | STRLEN len; |
79072805 | 374 | sv = av_shift(GvAV(gv)); |
8990e307 | 375 | SAVEFREESV(sv); |
79072805 LW |
376 | sv_setsv(GvSV(gv),sv); |
377 | SvSETMAGIC(GvSV(gv)); | |
463ee0b2 | 378 | oldname = SvPVx(GvSV(gv), len); |
c07a80fd | 379 | if (do_open(gv,oldname,len,FALSE,0,0,Nullfp)) { |
a687059c | 380 | if (inplace) { |
79072805 | 381 | TAINT_PROPER("inplace open"); |
c623bd54 | 382 | if (strEQ(oldname,"-")) { |
4633a7c4 | 383 | setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO)); |
a0d0e21e | 384 | return IoIFP(GvIOp(gv)); |
c623bd54 | 385 | } |
99b89507 | 386 | #ifndef FLEXFILENAMES |
c623bd54 LW |
387 | filedev = statbuf.st_dev; |
388 | fileino = statbuf.st_ino; | |
99b89507 | 389 | #endif |
a687059c LW |
390 | filemode = statbuf.st_mode; |
391 | fileuid = statbuf.st_uid; | |
392 | filegid = statbuf.st_gid; | |
c623bd54 LW |
393 | if (!S_ISREG(filemode)) { |
394 | warn("Can't do inplace edit: %s is not a regular file", | |
395 | oldname ); | |
79072805 | 396 | do_close(gv,FALSE); |
c623bd54 LW |
397 | continue; |
398 | } | |
a687059c | 399 | if (*inplace) { |
ff8e2863 | 400 | #ifdef SUFFIX |
79072805 | 401 | add_suffix(sv,inplace); |
ff8e2863 | 402 | #else |
79072805 | 403 | sv_catpv(sv,inplace); |
ff8e2863 | 404 | #endif |
c623bd54 | 405 | #ifndef FLEXFILENAMES |
a0d0e21e | 406 | if (Stat(SvPVX(sv),&statbuf) >= 0 |
c623bd54 LW |
407 | && statbuf.st_dev == filedev |
408 | && statbuf.st_ino == fileino ) { | |
409 | warn("Can't do inplace edit: %s > 14 characters", | |
463ee0b2 | 410 | SvPVX(sv) ); |
79072805 | 411 | do_close(gv,FALSE); |
c623bd54 LW |
412 | continue; |
413 | } | |
414 | #endif | |
fe14fcc3 | 415 | #ifdef HAS_RENAME |
bee1dbe2 | 416 | #ifndef DOSISH |
463ee0b2 | 417 | if (rename(oldname,SvPVX(sv)) < 0) { |
c623bd54 | 418 | warn("Can't rename %s to %s: %s, skipping file", |
2304df62 | 419 | oldname, SvPVX(sv), Strerror(errno) ); |
79072805 | 420 | do_close(gv,FALSE); |
c623bd54 LW |
421 | continue; |
422 | } | |
a687059c | 423 | #else |
79072805 | 424 | do_close(gv,FALSE); |
463ee0b2 LW |
425 | (void)unlink(SvPVX(sv)); |
426 | (void)rename(oldname,SvPVX(sv)); | |
1193dd27 | 427 | do_open(gv,SvPVX(sv),SvCUR(sv),FALSE,0,0,Nullfp); |
55497cff | 428 | #endif /* DOSISH */ |
ff8e2863 | 429 | #else |
463ee0b2 LW |
430 | (void)UNLINK(SvPVX(sv)); |
431 | if (link(oldname,SvPVX(sv)) < 0) { | |
c623bd54 | 432 | warn("Can't rename %s to %s: %s, skipping file", |
2304df62 | 433 | oldname, SvPVX(sv), Strerror(errno) ); |
79072805 | 434 | do_close(gv,FALSE); |
c623bd54 LW |
435 | continue; |
436 | } | |
a687059c LW |
437 | (void)UNLINK(oldname); |
438 | #endif | |
439 | } | |
440 | else { | |
a8c18271 | 441 | #if !defined(DOSISH) && !defined(AMIGAOS) |
edc7bc49 | 442 | # ifndef VMS /* Don't delete; use automatic file versioning */ |
fe14fcc3 LW |
443 | if (UNLINK(oldname) < 0) { |
444 | warn("Can't rename %s to %s: %s, skipping file", | |
2304df62 | 445 | oldname, SvPVX(sv), Strerror(errno) ); |
79072805 | 446 | do_close(gv,FALSE); |
fe14fcc3 LW |
447 | continue; |
448 | } | |
edc7bc49 | 449 | # endif |
ff8e2863 | 450 | #else |
463ee0b2 | 451 | croak("Can't do inplace edit without backup"); |
ff8e2863 | 452 | #endif |
a687059c LW |
453 | } |
454 | ||
79072805 LW |
455 | sv_setpvn(sv,">",1); |
456 | sv_catpv(sv,oldname); | |
748a9306 | 457 | SETERRNO(0,0); /* in case sprintf set errno */ |
c07a80fd | 458 | if (!do_open(argvoutgv,SvPVX(sv),SvCUR(sv),FALSE,0,0,Nullfp)) { |
c623bd54 | 459 | warn("Can't do inplace edit on %s: %s", |
2304df62 | 460 | oldname, Strerror(errno) ); |
79072805 | 461 | do_close(gv,FALSE); |
fe14fcc3 LW |
462 | continue; |
463 | } | |
4633a7c4 | 464 | setdefout(argvoutgv); |
760ac839 | 465 | lastfd = PerlIO_fileno(IoIFP(GvIOp(argvoutgv))); |
a0d0e21e | 466 | (void)Fstat(lastfd,&statbuf); |
fe14fcc3 LW |
467 | #ifdef HAS_FCHMOD |
468 | (void)fchmod(lastfd,filemode); | |
a687059c LW |
469 | #else |
470 | (void)chmod(oldname,filemode); | |
471 | #endif | |
fe14fcc3 LW |
472 | if (fileuid != statbuf.st_uid || filegid != statbuf.st_gid) { |
473 | #ifdef HAS_FCHOWN | |
474 | (void)fchown(lastfd,fileuid,filegid); | |
a687059c | 475 | #else |
fe14fcc3 LW |
476 | #ifdef HAS_CHOWN |
477 | (void)chown(oldname,fileuid,filegid); | |
a687059c | 478 | #endif |
b1248f16 | 479 | #endif |
fe14fcc3 | 480 | } |
a687059c | 481 | } |
a0d0e21e | 482 | return IoIFP(GvIOp(gv)); |
a687059c LW |
483 | } |
484 | else | |
760ac839 | 485 | PerlIO_printf(PerlIO_stderr(), "Can't open %s: %s\n",SvPV(sv, na), Strerror(errno)); |
a687059c LW |
486 | } |
487 | if (inplace) { | |
79072805 | 488 | (void)do_close(argvoutgv,FALSE); |
4633a7c4 | 489 | setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO)); |
a687059c LW |
490 | } |
491 | return Nullfp; | |
492 | } | |
493 | ||
fe14fcc3 | 494 | #ifdef HAS_PIPE |
afd9f252 | 495 | void |
79072805 LW |
496 | do_pipe(sv, rgv, wgv) |
497 | SV *sv; | |
498 | GV *rgv; | |
499 | GV *wgv; | |
afd9f252 | 500 | { |
79072805 LW |
501 | register IO *rstio; |
502 | register IO *wstio; | |
afd9f252 LW |
503 | int fd[2]; |
504 | ||
79072805 | 505 | if (!rgv) |
afd9f252 | 506 | goto badexit; |
79072805 | 507 | if (!wgv) |
afd9f252 LW |
508 | goto badexit; |
509 | ||
a0d0e21e LW |
510 | rstio = GvIOn(rgv); |
511 | wstio = GvIOn(wgv); | |
afd9f252 | 512 | |
a0d0e21e | 513 | if (IoIFP(rstio)) |
79072805 | 514 | do_close(rgv,FALSE); |
a0d0e21e | 515 | if (IoIFP(wstio)) |
79072805 | 516 | do_close(wgv,FALSE); |
afd9f252 LW |
517 | |
518 | if (pipe(fd) < 0) | |
519 | goto badexit; | |
760ac839 LW |
520 | IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"); |
521 | IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"); | |
8990e307 LW |
522 | IoIFP(wstio) = IoOFP(wstio); |
523 | IoTYPE(rstio) = '<'; | |
524 | IoTYPE(wstio) = '>'; | |
525 | if (!IoIFP(rstio) || !IoOFP(wstio)) { | |
760ac839 | 526 | if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio)); |
fe14fcc3 | 527 | else close(fd[0]); |
760ac839 | 528 | if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio)); |
fe14fcc3 LW |
529 | else close(fd[1]); |
530 | goto badexit; | |
531 | } | |
afd9f252 | 532 | |
79072805 | 533 | sv_setsv(sv,&sv_yes); |
afd9f252 LW |
534 | return; |
535 | ||
536 | badexit: | |
79072805 | 537 | sv_setsv(sv,&sv_undef); |
afd9f252 LW |
538 | return; |
539 | } | |
b1248f16 | 540 | #endif |
afd9f252 | 541 | |
517844ec | 542 | /* explicit renamed to avoid C++ conflict -- kja */ |
a687059c | 543 | bool |
a0d0e21e | 544 | #ifndef CAN_PROTOTYPE |
517844ec | 545 | do_close(gv,not_implicit) |
79072805 | 546 | GV *gv; |
517844ec | 547 | bool not_implicit; |
8990e307 | 548 | #else |
517844ec | 549 | do_close(GV *gv, bool not_implicit) |
a0d0e21e | 550 | #endif /* CAN_PROTOTYPE */ |
a687059c | 551 | { |
1193dd27 IZ |
552 | bool retval; |
553 | IO *io; | |
a687059c | 554 | |
79072805 LW |
555 | if (!gv) |
556 | gv = argvgv; | |
a0d0e21e | 557 | if (!gv || SvTYPE(gv) != SVt_PVGV) { |
748a9306 | 558 | SETERRNO(EBADF,SS$_IVCHAN); |
c2ab57d4 | 559 | return FALSE; |
99b89507 | 560 | } |
79072805 LW |
561 | io = GvIO(gv); |
562 | if (!io) { /* never opened */ | |
517844ec | 563 | if (dowarn && not_implicit) |
79072805 | 564 | warn("Close on unopened file <%s>",GvENAME(gv)); |
a687059c LW |
565 | return FALSE; |
566 | } | |
1193dd27 | 567 | retval = io_close(io); |
517844ec | 568 | if (not_implicit) { |
1193dd27 IZ |
569 | IoLINES(io) = 0; |
570 | IoPAGE(io) = 0; | |
571 | IoLINES_LEFT(io) = IoPAGE_LEN(io); | |
572 | } | |
573 | IoTYPE(io) = ' '; | |
574 | return retval; | |
575 | } | |
576 | ||
577 | bool | |
578 | io_close(io) | |
579 | IO* io; | |
580 | { | |
581 | bool retval = FALSE; | |
582 | int status; | |
583 | ||
8990e307 LW |
584 | if (IoIFP(io)) { |
585 | if (IoTYPE(io) == '|') { | |
586 | status = my_pclose(IoIFP(io)); | |
c623bd54 | 587 | retval = (status == 0); |
f86702cc | 588 | STATUS_NATIVE_SET(status); |
a687059c | 589 | } |
8990e307 | 590 | else if (IoTYPE(io) == '-') |
a687059c LW |
591 | retval = TRUE; |
592 | else { | |
8990e307 | 593 | if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */ |
760ac839 LW |
594 | retval = (PerlIO_close(IoOFP(io)) != EOF); |
595 | PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */ | |
c2ab57d4 LW |
596 | } |
597 | else | |
760ac839 | 598 | retval = (PerlIO_close(IoIFP(io)) != EOF); |
a687059c | 599 | } |
8990e307 | 600 | IoOFP(io) = IoIFP(io) = Nullfp; |
79072805 | 601 | } |
1193dd27 | 602 | |
a687059c LW |
603 | return retval; |
604 | } | |
605 | ||
606 | bool | |
79072805 LW |
607 | do_eof(gv) |
608 | GV *gv; | |
a687059c | 609 | { |
79072805 | 610 | register IO *io; |
a687059c LW |
611 | int ch; |
612 | ||
79072805 | 613 | io = GvIO(gv); |
a687059c | 614 | |
79072805 | 615 | if (!io) |
a687059c LW |
616 | return TRUE; |
617 | ||
8990e307 | 618 | while (IoIFP(io)) { |
a687059c | 619 | |
760ac839 LW |
620 | if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */ |
621 | if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */ | |
622 | return FALSE; /* this is the most usual case */ | |
623 | } | |
a687059c | 624 | |
760ac839 | 625 | ch = PerlIO_getc(IoIFP(io)); |
a687059c | 626 | if (ch != EOF) { |
760ac839 | 627 | (void)PerlIO_ungetc(IoIFP(io),ch); |
a687059c LW |
628 | return FALSE; |
629 | } | |
760ac839 LW |
630 | if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) { |
631 | if (PerlIO_get_cnt(IoIFP(io)) < -1) | |
632 | PerlIO_set_cnt(IoIFP(io),-1); | |
633 | } | |
8990e307 | 634 | if (op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */ |
79072805 | 635 | if (!nextargv(argvgv)) /* get another fp handy */ |
a687059c LW |
636 | return TRUE; |
637 | } | |
638 | else | |
639 | return TRUE; /* normal fp, definitely end of file */ | |
640 | } | |
641 | return TRUE; | |
642 | } | |
643 | ||
644 | long | |
79072805 LW |
645 | do_tell(gv) |
646 | GV *gv; | |
a687059c | 647 | { |
79072805 | 648 | register IO *io; |
a687059c | 649 | |
79072805 | 650 | if (!gv) |
a687059c LW |
651 | goto phooey; |
652 | ||
79072805 | 653 | io = GvIO(gv); |
8990e307 | 654 | if (!io || !IoIFP(io)) |
a687059c LW |
655 | goto phooey; |
656 | ||
bee1dbe2 | 657 | #ifdef ULTRIX_STDIO_BOTCH |
760ac839 LW |
658 | if (PerlIO_eof(IoIFP(io))) |
659 | (void)PerlIO_seek (IoIFP(io), 0L, 2); /* ultrix 1.2 workaround */ | |
bee1dbe2 | 660 | #endif |
a687059c | 661 | |
760ac839 | 662 | return PerlIO_tell(IoIFP(io)); |
a687059c LW |
663 | |
664 | phooey: | |
665 | if (dowarn) | |
666 | warn("tell() on unopened file"); | |
748a9306 | 667 | SETERRNO(EBADF,RMS$_IFI); |
a687059c LW |
668 | return -1L; |
669 | } | |
670 | ||
671 | bool | |
79072805 LW |
672 | do_seek(gv, pos, whence) |
673 | GV *gv; | |
a687059c LW |
674 | long pos; |
675 | int whence; | |
676 | { | |
79072805 | 677 | register IO *io; |
a687059c | 678 | |
79072805 | 679 | if (!gv) |
a687059c LW |
680 | goto nuts; |
681 | ||
79072805 | 682 | io = GvIO(gv); |
8990e307 | 683 | if (!io || !IoIFP(io)) |
a687059c LW |
684 | goto nuts; |
685 | ||
bee1dbe2 | 686 | #ifdef ULTRIX_STDIO_BOTCH |
760ac839 LW |
687 | if (PerlIO_eof(IoIFP(io))) |
688 | (void)PerlIO_seek (IoIFP(io), 0L, 2); /* ultrix 1.2 workaround */ | |
bee1dbe2 | 689 | #endif |
a687059c | 690 | |
760ac839 | 691 | return PerlIO_seek(IoIFP(io), pos, whence) >= 0; |
a687059c LW |
692 | |
693 | nuts: | |
694 | if (dowarn) | |
695 | warn("seek() on unopened file"); | |
748a9306 | 696 | SETERRNO(EBADF,RMS$_IFI); |
a687059c LW |
697 | return FALSE; |
698 | } | |
699 | ||
a0d0e21e | 700 | #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP) |
c2ab57d4 | 701 | /* code courtesy of William Kucharski */ |
fe14fcc3 | 702 | #define HAS_CHSIZE |
6eb13c3b | 703 | |
517844ec | 704 | I32 my_chsize(fd, length) |
79072805 | 705 | I32 fd; /* file descriptor */ |
85e6fe83 | 706 | Off_t length; /* length to set file to */ |
6eb13c3b LW |
707 | { |
708 | extern long lseek(); | |
709 | struct flock fl; | |
710 | struct stat filebuf; | |
711 | ||
a0d0e21e | 712 | if (Fstat(fd, &filebuf) < 0) |
6eb13c3b LW |
713 | return -1; |
714 | ||
715 | if (filebuf.st_size < length) { | |
716 | ||
717 | /* extend file length */ | |
718 | ||
719 | if ((lseek(fd, (length - 1), 0)) < 0) | |
720 | return -1; | |
721 | ||
722 | /* write a "0" byte */ | |
723 | ||
724 | if ((write(fd, "", 1)) != 1) | |
725 | return -1; | |
726 | } | |
727 | else { | |
728 | /* truncate length */ | |
729 | ||
730 | fl.l_whence = 0; | |
731 | fl.l_len = 0; | |
732 | fl.l_start = length; | |
a0d0e21e | 733 | fl.l_type = F_WRLCK; /* write lock on file space */ |
6eb13c3b LW |
734 | |
735 | /* | |
a0d0e21e | 736 | * This relies on the UNDOCUMENTED F_FREESP argument to |
6eb13c3b LW |
737 | * fcntl(2), which truncates the file so that it ends at the |
738 | * position indicated by fl.l_start. | |
739 | * | |
740 | * Will minor miracles never cease? | |
741 | */ | |
742 | ||
a0d0e21e | 743 | if (fcntl(fd, F_FREESP, &fl) < 0) |
6eb13c3b LW |
744 | return -1; |
745 | ||
746 | } | |
747 | ||
748 | return 0; | |
749 | } | |
a0d0e21e | 750 | #endif /* F_FREESP */ |
ff8e2863 | 751 | |
a687059c | 752 | bool |
79072805 LW |
753 | do_print(sv,fp) |
754 | register SV *sv; | |
760ac839 | 755 | PerlIO *fp; |
a687059c LW |
756 | { |
757 | register char *tmps; | |
463ee0b2 | 758 | STRLEN len; |
a687059c | 759 | |
79072805 LW |
760 | /* assuming fp is checked earlier */ |
761 | if (!sv) | |
762 | return TRUE; | |
763 | if (ofmt) { | |
8990e307 | 764 | if (SvGMAGICAL(sv)) |
79072805 | 765 | mg_get(sv); |
463ee0b2 | 766 | if (SvIOK(sv) && SvIVX(sv) != 0) { |
760ac839 LW |
767 | PerlIO_printf(fp, ofmt, (double)SvIVX(sv)); |
768 | return !PerlIO_error(fp); | |
79072805 | 769 | } |
463ee0b2 | 770 | if ( (SvNOK(sv) && SvNVX(sv) != 0.0) |
79072805 | 771 | || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) { |
760ac839 LW |
772 | PerlIO_printf(fp, ofmt, SvNVX(sv)); |
773 | return !PerlIO_error(fp); | |
79072805 | 774 | } |
a687059c | 775 | } |
79072805 LW |
776 | switch (SvTYPE(sv)) { |
777 | case SVt_NULL: | |
8990e307 LW |
778 | if (dowarn) |
779 | warn(warn_uninit); | |
ff8e2863 | 780 | return TRUE; |
79072805 | 781 | case SVt_IV: |
a0d0e21e LW |
782 | if (SvIOK(sv)) { |
783 | if (SvGMAGICAL(sv)) | |
784 | mg_get(sv); | |
760ac839 LW |
785 | PerlIO_printf(fp, "%ld", (long)SvIVX(sv)); |
786 | return !PerlIO_error(fp); | |
a0d0e21e LW |
787 | } |
788 | /* FALL THROUGH */ | |
79072805 | 789 | default: |
463ee0b2 | 790 | tmps = SvPV(sv, len); |
79072805 | 791 | break; |
ff8e2863 | 792 | } |
760ac839 | 793 | if (len && (PerlIO_write(fp,tmps,len) == 0 || PerlIO_error(fp))) |
a687059c | 794 | return FALSE; |
760ac839 | 795 | return !PerlIO_error(fp); |
a687059c LW |
796 | } |
797 | ||
79072805 LW |
798 | I32 |
799 | my_stat(ARGS) | |
800 | dARGS | |
a687059c | 801 | { |
79072805 LW |
802 | dSP; |
803 | IO *io; | |
748a9306 | 804 | GV* tmpgv; |
79072805 | 805 | |
a0d0e21e | 806 | if (op->op_flags & OPf_REF) { |
79072805 | 807 | EXTEND(sp,1); |
748a9306 LW |
808 | tmpgv = cGVOP->op_gv; |
809 | do_fstat: | |
810 | io = GvIO(tmpgv); | |
8990e307 | 811 | if (io && IoIFP(io)) { |
748a9306 | 812 | statgv = tmpgv; |
79072805 LW |
813 | sv_setpv(statname,""); |
814 | laststype = OP_STAT; | |
760ac839 | 815 | return (laststatval = Fstat(PerlIO_fileno(IoIFP(io)), &statcache)); |
a687059c LW |
816 | } |
817 | else { | |
748a9306 | 818 | if (tmpgv == defgv) |
57ebbfd0 | 819 | return laststatval; |
a687059c LW |
820 | if (dowarn) |
821 | warn("Stat on unopened file <%s>", | |
748a9306 | 822 | GvENAME(tmpgv)); |
79072805 LW |
823 | statgv = Nullgv; |
824 | sv_setpv(statname,""); | |
57ebbfd0 | 825 | return (laststatval = -1); |
a687059c LW |
826 | } |
827 | } | |
828 | else { | |
748a9306 | 829 | SV* sv = POPs; |
79072805 | 830 | PUTBACK; |
748a9306 LW |
831 | if (SvTYPE(sv) == SVt_PVGV) { |
832 | tmpgv = (GV*)sv; | |
833 | goto do_fstat; | |
834 | } | |
835 | else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) { | |
836 | tmpgv = (GV*)SvRV(sv); | |
837 | goto do_fstat; | |
838 | } | |
839 | ||
79072805 | 840 | statgv = Nullgv; |
463ee0b2 | 841 | sv_setpv(statname,SvPV(sv, na)); |
79072805 | 842 | laststype = OP_STAT; |
a0d0e21e | 843 | laststatval = Stat(SvPV(sv, na),&statcache); |
463ee0b2 | 844 | if (laststatval < 0 && dowarn && strchr(SvPV(sv, na), '\n')) |
bee1dbe2 LW |
845 | warn(warn_nl, "stat"); |
846 | return laststatval; | |
a687059c LW |
847 | } |
848 | } | |
849 | ||
79072805 LW |
850 | I32 |
851 | my_lstat(ARGS) | |
852 | dARGS | |
c623bd54 | 853 | { |
79072805 LW |
854 | dSP; |
855 | SV *sv; | |
a0d0e21e | 856 | if (op->op_flags & OPf_REF) { |
79072805 LW |
857 | EXTEND(sp,1); |
858 | if (cGVOP->op_gv == defgv) { | |
859 | if (laststype != OP_LSTAT) | |
463ee0b2 | 860 | croak("The stat preceding -l _ wasn't an lstat"); |
fe14fcc3 LW |
861 | return laststatval; |
862 | } | |
463ee0b2 | 863 | croak("You can't use -l on a filehandle"); |
fe14fcc3 | 864 | } |
c623bd54 | 865 | |
79072805 LW |
866 | laststype = OP_LSTAT; |
867 | statgv = Nullgv; | |
868 | sv = POPs; | |
869 | PUTBACK; | |
463ee0b2 | 870 | sv_setpv(statname,SvPV(sv, na)); |
fe14fcc3 | 871 | #ifdef HAS_LSTAT |
463ee0b2 | 872 | laststatval = lstat(SvPV(sv, na),&statcache); |
c623bd54 | 873 | #else |
a0d0e21e | 874 | laststatval = Stat(SvPV(sv, na),&statcache); |
c623bd54 | 875 | #endif |
463ee0b2 | 876 | if (laststatval < 0 && dowarn && strchr(SvPV(sv, na), '\n')) |
bee1dbe2 LW |
877 | warn(warn_nl, "lstat"); |
878 | return laststatval; | |
c623bd54 LW |
879 | } |
880 | ||
a687059c | 881 | bool |
79072805 LW |
882 | do_aexec(really,mark,sp) |
883 | SV *really; | |
884 | register SV **mark; | |
885 | register SV **sp; | |
a687059c | 886 | { |
a687059c | 887 | register char **a; |
a687059c LW |
888 | char *tmps; |
889 | ||
79072805 LW |
890 | if (sp > mark) { |
891 | New(401,Argv, sp - mark + 1, char*); | |
bee1dbe2 | 892 | a = Argv; |
79072805 LW |
893 | while (++mark <= sp) { |
894 | if (*mark) | |
463ee0b2 | 895 | *a++ = SvPVx(*mark, na); |
a687059c LW |
896 | else |
897 | *a++ = ""; | |
898 | } | |
899 | *a = Nullch; | |
bee1dbe2 | 900 | if (*Argv[0] != '/') /* will execvp use PATH? */ |
79072805 | 901 | TAINT_ENV(); /* testing IFS here is overkill, probably */ |
463ee0b2 | 902 | if (really && *(tmps = SvPV(really, na))) |
bee1dbe2 | 903 | execvp(tmps,Argv); |
a687059c | 904 | else |
bee1dbe2 | 905 | execvp(Argv[0],Argv); |
a0d0e21e LW |
906 | if (dowarn) |
907 | warn("Can't exec \"%s\": %s", Argv[0], Strerror(errno)); | |
a687059c | 908 | } |
bee1dbe2 | 909 | do_execfree(); |
a687059c LW |
910 | return FALSE; |
911 | } | |
912 | ||
fe14fcc3 | 913 | void |
ff8e2863 LW |
914 | do_execfree() |
915 | { | |
916 | if (Argv) { | |
917 | Safefree(Argv); | |
918 | Argv = Null(char **); | |
919 | } | |
920 | if (Cmd) { | |
921 | Safefree(Cmd); | |
922 | Cmd = Nullch; | |
923 | } | |
924 | } | |
925 | ||
760ac839 LW |
926 | #ifndef OS2 |
927 | ||
a687059c LW |
928 | bool |
929 | do_exec(cmd) | |
930 | char *cmd; | |
931 | { | |
932 | register char **a; | |
933 | register char *s; | |
a687059c LW |
934 | char flags[10]; |
935 | ||
748a9306 LW |
936 | while (*cmd && isSPACE(*cmd)) |
937 | cmd++; | |
938 | ||
a687059c LW |
939 | /* save an extra exec if possible */ |
940 | ||
bf38876a LW |
941 | #ifdef CSH |
942 | if (strnEQ(cmd,cshname,cshlen) && strnEQ(cmd+cshlen," -c",3)) { | |
a687059c | 943 | strcpy(flags,"-c"); |
bf38876a | 944 | s = cmd+cshlen+3; |
a687059c LW |
945 | if (*s == 'f') { |
946 | s++; | |
947 | strcat(flags,"f"); | |
948 | } | |
949 | if (*s == ' ') | |
950 | s++; | |
951 | if (*s++ == '\'') { | |
952 | char *ncmd = s; | |
953 | ||
954 | while (*s) | |
955 | s++; | |
956 | if (s[-1] == '\n') | |
957 | *--s = '\0'; | |
958 | if (s[-1] == '\'') { | |
959 | *--s = '\0'; | |
bf38876a | 960 | execl(cshname,"csh", flags,ncmd,(char*)0); |
a687059c LW |
961 | *s = '\''; |
962 | return FALSE; | |
963 | } | |
964 | } | |
965 | } | |
bf38876a | 966 | #endif /* CSH */ |
a687059c LW |
967 | |
968 | /* see if there are shell metacharacters in it */ | |
969 | ||
748a9306 LW |
970 | if (*cmd == '.' && isSPACE(cmd[1])) |
971 | goto doshell; | |
972 | ||
973 | if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4])) | |
974 | goto doshell; | |
975 | ||
99b89507 | 976 | for (s = cmd; *s && isALPHA(*s); s++) ; /* catch VAR=val gizmo */ |
63f2c1e1 LW |
977 | if (*s == '=') |
978 | goto doshell; | |
748a9306 | 979 | |
a687059c | 980 | for (s = cmd; *s; s++) { |
93a17b20 | 981 | if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) { |
a687059c LW |
982 | if (*s == '\n' && !s[1]) { |
983 | *s = '\0'; | |
984 | break; | |
985 | } | |
986 | doshell: | |
ff68c719 | 987 | execl(sh_path, "sh", "-c", cmd, (char*)0); |
a687059c LW |
988 | return FALSE; |
989 | } | |
990 | } | |
748a9306 | 991 | |
ff8e2863 | 992 | New(402,Argv, (s - cmd) / 2 + 2, char*); |
a0d0e21e | 993 | Cmd = savepvn(cmd, s-cmd); |
ff8e2863 LW |
994 | a = Argv; |
995 | for (s = Cmd; *s;) { | |
99b89507 | 996 | while (*s && isSPACE(*s)) s++; |
a687059c LW |
997 | if (*s) |
998 | *(a++) = s; | |
99b89507 | 999 | while (*s && !isSPACE(*s)) s++; |
a687059c LW |
1000 | if (*s) |
1001 | *s++ = '\0'; | |
1002 | } | |
1003 | *a = Nullch; | |
ff8e2863 LW |
1004 | if (Argv[0]) { |
1005 | execvp(Argv[0],Argv); | |
b1248f16 | 1006 | if (errno == ENOEXEC) { /* for system V NIH syndrome */ |
ff8e2863 | 1007 | do_execfree(); |
a687059c | 1008 | goto doshell; |
b1248f16 | 1009 | } |
a0d0e21e LW |
1010 | if (dowarn) |
1011 | warn("Can't exec \"%s\": %s", Argv[0], Strerror(errno)); | |
a687059c | 1012 | } |
ff8e2863 | 1013 | do_execfree(); |
a687059c LW |
1014 | return FALSE; |
1015 | } | |
1016 | ||
55497cff | 1017 | #endif /* OS2 */ |
760ac839 | 1018 | |
79072805 LW |
1019 | I32 |
1020 | apply(type,mark,sp) | |
1021 | I32 type; | |
1022 | register SV **mark; | |
1023 | register SV **sp; | |
a687059c | 1024 | { |
79072805 LW |
1025 | register I32 val; |
1026 | register I32 val2; | |
1027 | register I32 tot = 0; | |
a687059c | 1028 | char *s; |
79072805 | 1029 | SV **oldmark = mark; |
a687059c | 1030 | |
463ee0b2 LW |
1031 | if (tainting) { |
1032 | while (++mark <= sp) { | |
bbce6d69 | 1033 | if (SvTAINTED(*mark)) { |
1034 | TAINT; | |
1035 | break; | |
1036 | } | |
463ee0b2 LW |
1037 | } |
1038 | mark = oldmark; | |
1039 | } | |
a687059c | 1040 | switch (type) { |
79072805 LW |
1041 | case OP_CHMOD: |
1042 | TAINT_PROPER("chmod"); | |
1043 | if (++mark <= sp) { | |
1044 | tot = sp - mark; | |
463ee0b2 | 1045 | val = SvIVx(*mark); |
79072805 | 1046 | while (++mark <= sp) { |
463ee0b2 | 1047 | if (chmod(SvPVx(*mark, na),val)) |
a687059c LW |
1048 | tot--; |
1049 | } | |
1050 | } | |
1051 | break; | |
fe14fcc3 | 1052 | #ifdef HAS_CHOWN |
79072805 LW |
1053 | case OP_CHOWN: |
1054 | TAINT_PROPER("chown"); | |
1055 | if (sp - mark > 2) { | |
463ee0b2 LW |
1056 | val = SvIVx(*++mark); |
1057 | val2 = SvIVx(*++mark); | |
a0d0e21e | 1058 | tot = sp - mark; |
79072805 | 1059 | while (++mark <= sp) { |
463ee0b2 | 1060 | if (chown(SvPVx(*mark, na),val,val2)) |
a687059c LW |
1061 | tot--; |
1062 | } | |
1063 | } | |
1064 | break; | |
b1248f16 | 1065 | #endif |
fe14fcc3 | 1066 | #ifdef HAS_KILL |
79072805 LW |
1067 | case OP_KILL: |
1068 | TAINT_PROPER("kill"); | |
55497cff | 1069 | if (mark == sp) |
1070 | break; | |
463ee0b2 | 1071 | s = SvPVx(*++mark, na); |
79072805 LW |
1072 | tot = sp - mark; |
1073 | if (isUPPER(*s)) { | |
1074 | if (*s == 'S' && s[1] == 'I' && s[2] == 'G') | |
1075 | s += 3; | |
1076 | if (!(val = whichsig(s))) | |
463ee0b2 | 1077 | croak("Unrecognized signal name \"%s\"",s); |
79072805 LW |
1078 | } |
1079 | else | |
463ee0b2 | 1080 | val = SvIVx(*mark); |
3595fcef | 1081 | #ifdef VMS |
1082 | /* kill() doesn't do process groups (job trees?) under VMS */ | |
1083 | if (val < 0) val = -val; | |
1084 | if (val == SIGKILL) { | |
1085 | # include <starlet.h> | |
1086 | /* Use native sys$delprc() to insure that target process is | |
1087 | * deleted; supervisor-mode images don't pay attention to | |
1088 | * CRTL's emulation of Unix-style signals and kill() | |
1089 | */ | |
1090 | while (++mark <= sp) { | |
1091 | I32 proc = SvIVx(*mark); | |
1092 | register unsigned long int __vmssts; | |
1093 | if (!((__vmssts = sys$delprc(&proc,0)) & 1)) { | |
1094 | tot--; | |
1095 | switch (__vmssts) { | |
1096 | case SS$_NONEXPR: | |
1097 | case SS$_NOSUCHNODE: | |
1098 | SETERRNO(ESRCH,__vmssts); | |
1099 | break; | |
1100 | case SS$_NOPRIV: | |
1101 | SETERRNO(EPERM,__vmssts); | |
1102 | break; | |
1103 | default: | |
1104 | SETERRNO(EVMSERR,__vmssts); | |
1105 | } | |
1106 | } | |
1107 | } | |
1108 | break; | |
1109 | } | |
1110 | #endif | |
79072805 LW |
1111 | if (val < 0) { |
1112 | val = -val; | |
1113 | while (++mark <= sp) { | |
463ee0b2 | 1114 | I32 proc = SvIVx(*mark); |
fe14fcc3 | 1115 | #ifdef HAS_KILLPG |
79072805 | 1116 | if (killpg(proc,val)) /* BSD */ |
a687059c | 1117 | #else |
79072805 | 1118 | if (kill(-proc,val)) /* SYSV */ |
a687059c | 1119 | #endif |
79072805 | 1120 | tot--; |
a687059c | 1121 | } |
79072805 LW |
1122 | } |
1123 | else { | |
1124 | while (++mark <= sp) { | |
463ee0b2 | 1125 | if (kill(SvIVx(*mark),val)) |
79072805 | 1126 | tot--; |
a687059c LW |
1127 | } |
1128 | } | |
1129 | break; | |
b1248f16 | 1130 | #endif |
79072805 LW |
1131 | case OP_UNLINK: |
1132 | TAINT_PROPER("unlink"); | |
1133 | tot = sp - mark; | |
1134 | while (++mark <= sp) { | |
463ee0b2 | 1135 | s = SvPVx(*mark, na); |
a687059c LW |
1136 | if (euid || unsafe) { |
1137 | if (UNLINK(s)) | |
1138 | tot--; | |
1139 | } | |
1140 | else { /* don't let root wipe out directories without -U */ | |
fe14fcc3 | 1141 | #ifdef HAS_LSTAT |
c623bd54 | 1142 | if (lstat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode)) |
a687059c | 1143 | #else |
a0d0e21e | 1144 | if (Stat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode)) |
a687059c | 1145 | #endif |
a687059c LW |
1146 | tot--; |
1147 | else { | |
1148 | if (UNLINK(s)) | |
1149 | tot--; | |
1150 | } | |
1151 | } | |
1152 | } | |
1153 | break; | |
a0d0e21e | 1154 | #ifdef HAS_UTIME |
79072805 LW |
1155 | case OP_UTIME: |
1156 | TAINT_PROPER("utime"); | |
1157 | if (sp - mark > 2) { | |
748a9306 | 1158 | #if defined(I_UTIME) || defined(VMS) |
663a0e37 LW |
1159 | struct utimbuf utbuf; |
1160 | #else | |
a687059c | 1161 | struct { |
663a0e37 LW |
1162 | long actime; |
1163 | long modtime; | |
a687059c | 1164 | } utbuf; |
663a0e37 | 1165 | #endif |
a687059c | 1166 | |
afd9f252 | 1167 | Zero(&utbuf, sizeof utbuf, char); |
517844ec | 1168 | #ifdef BIG_TIME |
1169 | utbuf.actime = (Time_t)SvNVx(*++mark); /* time accessed */ | |
1170 | utbuf.modtime = (Time_t)SvNVx(*++mark); /* time modified */ | |
1171 | #else | |
463ee0b2 LW |
1172 | utbuf.actime = SvIVx(*++mark); /* time accessed */ |
1173 | utbuf.modtime = SvIVx(*++mark); /* time modified */ | |
517844ec | 1174 | #endif |
79072805 LW |
1175 | tot = sp - mark; |
1176 | while (++mark <= sp) { | |
463ee0b2 | 1177 | if (utime(SvPVx(*mark, na),&utbuf)) |
a687059c LW |
1178 | tot--; |
1179 | } | |
a687059c LW |
1180 | } |
1181 | else | |
79072805 | 1182 | tot = 0; |
a687059c | 1183 | break; |
a0d0e21e | 1184 | #endif |
a687059c LW |
1185 | } |
1186 | return tot; | |
1187 | } | |
1188 | ||
1189 | /* Do the permissions allow some operation? Assumes statcache already set. */ | |
a0d0e21e | 1190 | #ifndef VMS /* VMS' cando is in vms.c */ |
79072805 | 1191 | I32 |
a687059c | 1192 | cando(bit, effective, statbufp) |
79072805 LW |
1193 | I32 bit; |
1194 | I32 effective; | |
a687059c LW |
1195 | register struct stat *statbufp; |
1196 | { | |
bee1dbe2 | 1197 | #ifdef DOSISH |
fe14fcc3 LW |
1198 | /* [Comments and code from Len Reed] |
1199 | * MS-DOS "user" is similar to UNIX's "superuser," but can't write | |
1200 | * to write-protected files. The execute permission bit is set | |
1201 | * by the Miscrosoft C library stat() function for the following: | |
1202 | * .exe files | |
1203 | * .com files | |
1204 | * .bat files | |
1205 | * directories | |
1206 | * All files and directories are readable. | |
1207 | * Directories and special files, e.g. "CON", cannot be | |
1208 | * write-protected. | |
1209 | * [Comment by Tom Dinger -- a directory can have the write-protect | |
1210 | * bit set in the file system, but DOS permits changes to | |
1211 | * the directory anyway. In addition, all bets are off | |
1212 | * here for networked software, such as Novell and | |
1213 | * Sun's PC-NFS.] | |
1214 | */ | |
1215 | ||
bee1dbe2 LW |
1216 | /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat |
1217 | * too so it will actually look into the files for magic numbers | |
1218 | */ | |
fe14fcc3 LW |
1219 | return (bit & statbufp->st_mode) ? TRUE : FALSE; |
1220 | ||
55497cff | 1221 | #else /* ! DOSISH */ |
a687059c | 1222 | if ((effective ? euid : uid) == 0) { /* root is special */ |
c623bd54 LW |
1223 | if (bit == S_IXUSR) { |
1224 | if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode)) | |
a687059c LW |
1225 | return TRUE; |
1226 | } | |
1227 | else | |
1228 | return TRUE; /* root reads and writes anything */ | |
1229 | return FALSE; | |
1230 | } | |
1231 | if (statbufp->st_uid == (effective ? euid : uid) ) { | |
1232 | if (statbufp->st_mode & bit) | |
1233 | return TRUE; /* ok as "user" */ | |
1234 | } | |
79072805 | 1235 | else if (ingroup((I32)statbufp->st_gid,effective)) { |
a687059c LW |
1236 | if (statbufp->st_mode & bit >> 3) |
1237 | return TRUE; /* ok as "group" */ | |
1238 | } | |
1239 | else if (statbufp->st_mode & bit >> 6) | |
1240 | return TRUE; /* ok as "other" */ | |
1241 | return FALSE; | |
55497cff | 1242 | #endif /* ! DOSISH */ |
a687059c | 1243 | } |
a0d0e21e | 1244 | #endif /* ! VMS */ |
a687059c | 1245 | |
79072805 | 1246 | I32 |
a687059c | 1247 | ingroup(testgid,effective) |
79072805 LW |
1248 | I32 testgid; |
1249 | I32 effective; | |
a687059c LW |
1250 | { |
1251 | if (testgid == (effective ? egid : gid)) | |
1252 | return TRUE; | |
fe14fcc3 | 1253 | #ifdef HAS_GETGROUPS |
a687059c LW |
1254 | #ifndef NGROUPS |
1255 | #define NGROUPS 32 | |
1256 | #endif | |
1257 | { | |
a0d0e21e | 1258 | Groups_t gary[NGROUPS]; |
79072805 | 1259 | I32 anum; |
a687059c LW |
1260 | |
1261 | anum = getgroups(NGROUPS,gary); | |
1262 | while (--anum >= 0) | |
1263 | if (gary[anum] == testgid) | |
1264 | return TRUE; | |
1265 | } | |
1266 | #endif | |
1267 | return FALSE; | |
1268 | } | |
c2ab57d4 | 1269 | |
fe14fcc3 | 1270 | #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM) |
c2ab57d4 | 1271 | |
79072805 LW |
1272 | I32 |
1273 | do_ipcget(optype, mark, sp) | |
1274 | I32 optype; | |
1275 | SV **mark; | |
1276 | SV **sp; | |
c2ab57d4 | 1277 | { |
c2ab57d4 | 1278 | key_t key; |
79072805 | 1279 | I32 n, flags; |
c2ab57d4 | 1280 | |
463ee0b2 LW |
1281 | key = (key_t)SvNVx(*++mark); |
1282 | n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark); | |
1283 | flags = SvIVx(*++mark); | |
748a9306 | 1284 | SETERRNO(0,0); |
c2ab57d4 LW |
1285 | switch (optype) |
1286 | { | |
fe14fcc3 | 1287 | #ifdef HAS_MSG |
79072805 | 1288 | case OP_MSGGET: |
c2ab57d4 | 1289 | return msgget(key, flags); |
e5d73d77 | 1290 | #endif |
fe14fcc3 | 1291 | #ifdef HAS_SEM |
79072805 | 1292 | case OP_SEMGET: |
c2ab57d4 | 1293 | return semget(key, n, flags); |
e5d73d77 | 1294 | #endif |
fe14fcc3 | 1295 | #ifdef HAS_SHM |
79072805 | 1296 | case OP_SHMGET: |
c2ab57d4 | 1297 | return shmget(key, n, flags); |
e5d73d77 | 1298 | #endif |
fe14fcc3 | 1299 | #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
e5d73d77 | 1300 | default: |
c07a80fd | 1301 | croak("%s not implemented", op_desc[optype]); |
e5d73d77 | 1302 | #endif |
c2ab57d4 LW |
1303 | } |
1304 | return -1; /* should never happen */ | |
1305 | } | |
1306 | ||
79072805 LW |
1307 | I32 |
1308 | do_ipcctl(optype, mark, sp) | |
1309 | I32 optype; | |
1310 | SV **mark; | |
1311 | SV **sp; | |
c2ab57d4 | 1312 | { |
79072805 | 1313 | SV *astr; |
c2ab57d4 | 1314 | char *a; |
a0d0e21e LW |
1315 | I32 id, n, cmd, infosize, getinfo; |
1316 | I32 ret = -1; | |
c2ab57d4 | 1317 | |
463ee0b2 LW |
1318 | id = SvIVx(*++mark); |
1319 | n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0; | |
1320 | cmd = SvIVx(*++mark); | |
79072805 | 1321 | astr = *++mark; |
c2ab57d4 LW |
1322 | infosize = 0; |
1323 | getinfo = (cmd == IPC_STAT); | |
1324 | ||
1325 | switch (optype) | |
1326 | { | |
fe14fcc3 | 1327 | #ifdef HAS_MSG |
79072805 | 1328 | case OP_MSGCTL: |
c2ab57d4 LW |
1329 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1330 | infosize = sizeof(struct msqid_ds); | |
1331 | break; | |
e5d73d77 | 1332 | #endif |
fe14fcc3 | 1333 | #ifdef HAS_SHM |
79072805 | 1334 | case OP_SHMCTL: |
c2ab57d4 LW |
1335 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1336 | infosize = sizeof(struct shmid_ds); | |
1337 | break; | |
e5d73d77 | 1338 | #endif |
fe14fcc3 | 1339 | #ifdef HAS_SEM |
79072805 | 1340 | case OP_SEMCTL: |
c2ab57d4 LW |
1341 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1342 | infosize = sizeof(struct semid_ds); | |
1343 | else if (cmd == GETALL || cmd == SETALL) | |
1344 | { | |
1345 | struct semid_ds semds; | |
1346 | if (semctl(id, 0, IPC_STAT, &semds) == -1) | |
1347 | return -1; | |
1348 | getinfo = (cmd == GETALL); | |
6e21c824 LW |
1349 | infosize = semds.sem_nsems * sizeof(short); |
1350 | /* "short" is technically wrong but much more portable | |
1351 | than guessing about u_?short(_t)? */ | |
c2ab57d4 LW |
1352 | } |
1353 | break; | |
e5d73d77 | 1354 | #endif |
fe14fcc3 | 1355 | #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
e5d73d77 | 1356 | default: |
c07a80fd | 1357 | croak("%s not implemented", op_desc[optype]); |
e5d73d77 | 1358 | #endif |
c2ab57d4 LW |
1359 | } |
1360 | ||
1361 | if (infosize) | |
1362 | { | |
a0d0e21e | 1363 | STRLEN len; |
c2ab57d4 LW |
1364 | if (getinfo) |
1365 | { | |
a0d0e21e LW |
1366 | SvPV_force(astr, len); |
1367 | a = SvGROW(astr, infosize+1); | |
c2ab57d4 LW |
1368 | } |
1369 | else | |
1370 | { | |
463ee0b2 LW |
1371 | a = SvPV(astr, len); |
1372 | if (len != infosize) | |
bf81aadd RS |
1373 | croak("Bad arg length for %s, is %d, should be %ld", |
1374 | op_desc[optype], len, (long)infosize); | |
c2ab57d4 LW |
1375 | } |
1376 | } | |
1377 | else | |
1378 | { | |
463ee0b2 | 1379 | I32 i = SvIV(astr); |
c2ab57d4 LW |
1380 | a = (char *)i; /* ouch */ |
1381 | } | |
748a9306 | 1382 | SETERRNO(0,0); |
c2ab57d4 LW |
1383 | switch (optype) |
1384 | { | |
fe14fcc3 | 1385 | #ifdef HAS_MSG |
79072805 | 1386 | case OP_MSGCTL: |
bee1dbe2 | 1387 | ret = msgctl(id, cmd, (struct msqid_ds *)a); |
c2ab57d4 | 1388 | break; |
e5d73d77 | 1389 | #endif |
fe14fcc3 | 1390 | #ifdef HAS_SEM |
79072805 LW |
1391 | case OP_SEMCTL: |
1392 | ret = semctl(id, n, cmd, (struct semid_ds *)a); | |
c2ab57d4 | 1393 | break; |
e5d73d77 | 1394 | #endif |
fe14fcc3 | 1395 | #ifdef HAS_SHM |
79072805 | 1396 | case OP_SHMCTL: |
bee1dbe2 | 1397 | ret = shmctl(id, cmd, (struct shmid_ds *)a); |
c2ab57d4 | 1398 | break; |
e5d73d77 | 1399 | #endif |
c2ab57d4 LW |
1400 | } |
1401 | if (getinfo && ret >= 0) { | |
79072805 LW |
1402 | SvCUR_set(astr, infosize); |
1403 | *SvEND(astr) = '\0'; | |
a0d0e21e | 1404 | SvSETMAGIC(astr); |
c2ab57d4 LW |
1405 | } |
1406 | return ret; | |
1407 | } | |
1408 | ||
79072805 LW |
1409 | I32 |
1410 | do_msgsnd(mark, sp) | |
1411 | SV **mark; | |
1412 | SV **sp; | |
c2ab57d4 | 1413 | { |
fe14fcc3 | 1414 | #ifdef HAS_MSG |
79072805 | 1415 | SV *mstr; |
c2ab57d4 | 1416 | char *mbuf; |
79072805 | 1417 | I32 id, msize, flags; |
463ee0b2 | 1418 | STRLEN len; |
c2ab57d4 | 1419 | |
463ee0b2 | 1420 | id = SvIVx(*++mark); |
79072805 | 1421 | mstr = *++mark; |
463ee0b2 LW |
1422 | flags = SvIVx(*++mark); |
1423 | mbuf = SvPV(mstr, len); | |
1424 | if ((msize = len - sizeof(long)) < 0) | |
1425 | croak("Arg too short for msgsnd"); | |
748a9306 | 1426 | SETERRNO(0,0); |
bee1dbe2 | 1427 | return msgsnd(id, (struct msgbuf *)mbuf, msize, flags); |
e5d73d77 | 1428 | #else |
463ee0b2 | 1429 | croak("msgsnd not implemented"); |
e5d73d77 | 1430 | #endif |
c2ab57d4 LW |
1431 | } |
1432 | ||
79072805 LW |
1433 | I32 |
1434 | do_msgrcv(mark, sp) | |
1435 | SV **mark; | |
1436 | SV **sp; | |
c2ab57d4 | 1437 | { |
fe14fcc3 | 1438 | #ifdef HAS_MSG |
79072805 | 1439 | SV *mstr; |
c2ab57d4 LW |
1440 | char *mbuf; |
1441 | long mtype; | |
79072805 | 1442 | I32 id, msize, flags, ret; |
463ee0b2 | 1443 | STRLEN len; |
79072805 | 1444 | |
463ee0b2 | 1445 | id = SvIVx(*++mark); |
79072805 | 1446 | mstr = *++mark; |
463ee0b2 LW |
1447 | msize = SvIVx(*++mark); |
1448 | mtype = (long)SvIVx(*++mark); | |
1449 | flags = SvIVx(*++mark); | |
ed6116ce LW |
1450 | if (SvTHINKFIRST(mstr)) { |
1451 | if (SvREADONLY(mstr)) | |
1452 | croak("Can't msgrcv to readonly var"); | |
1453 | if (SvROK(mstr)) | |
1454 | sv_unref(mstr); | |
1455 | } | |
a0d0e21e LW |
1456 | SvPV_force(mstr, len); |
1457 | mbuf = SvGROW(mstr, sizeof(long)+msize+1); | |
1458 | ||
748a9306 | 1459 | SETERRNO(0,0); |
bee1dbe2 | 1460 | ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags); |
c2ab57d4 | 1461 | if (ret >= 0) { |
79072805 LW |
1462 | SvCUR_set(mstr, sizeof(long)+ret); |
1463 | *SvEND(mstr) = '\0'; | |
c2ab57d4 LW |
1464 | } |
1465 | return ret; | |
e5d73d77 | 1466 | #else |
463ee0b2 | 1467 | croak("msgrcv not implemented"); |
e5d73d77 | 1468 | #endif |
c2ab57d4 LW |
1469 | } |
1470 | ||
79072805 LW |
1471 | I32 |
1472 | do_semop(mark, sp) | |
1473 | SV **mark; | |
1474 | SV **sp; | |
c2ab57d4 | 1475 | { |
fe14fcc3 | 1476 | #ifdef HAS_SEM |
79072805 | 1477 | SV *opstr; |
c2ab57d4 | 1478 | char *opbuf; |
463ee0b2 LW |
1479 | I32 id; |
1480 | STRLEN opsize; | |
c2ab57d4 | 1481 | |
463ee0b2 | 1482 | id = SvIVx(*++mark); |
79072805 | 1483 | opstr = *++mark; |
463ee0b2 | 1484 | opbuf = SvPV(opstr, opsize); |
c2ab57d4 LW |
1485 | if (opsize < sizeof(struct sembuf) |
1486 | || (opsize % sizeof(struct sembuf)) != 0) { | |
748a9306 | 1487 | SETERRNO(EINVAL,LIB$_INVARG); |
c2ab57d4 LW |
1488 | return -1; |
1489 | } | |
748a9306 | 1490 | SETERRNO(0,0); |
6e21c824 | 1491 | return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf)); |
e5d73d77 | 1492 | #else |
463ee0b2 | 1493 | croak("semop not implemented"); |
e5d73d77 | 1494 | #endif |
c2ab57d4 LW |
1495 | } |
1496 | ||
79072805 LW |
1497 | I32 |
1498 | do_shmio(optype, mark, sp) | |
1499 | I32 optype; | |
1500 | SV **mark; | |
1501 | SV **sp; | |
c2ab57d4 | 1502 | { |
fe14fcc3 | 1503 | #ifdef HAS_SHM |
79072805 | 1504 | SV *mstr; |
c2ab57d4 | 1505 | char *mbuf, *shm; |
79072805 | 1506 | I32 id, mpos, msize; |
463ee0b2 | 1507 | STRLEN len; |
c2ab57d4 | 1508 | struct shmid_ds shmds; |
c2ab57d4 | 1509 | |
463ee0b2 | 1510 | id = SvIVx(*++mark); |
79072805 | 1511 | mstr = *++mark; |
463ee0b2 LW |
1512 | mpos = SvIVx(*++mark); |
1513 | msize = SvIVx(*++mark); | |
748a9306 | 1514 | SETERRNO(0,0); |
c2ab57d4 LW |
1515 | if (shmctl(id, IPC_STAT, &shmds) == -1) |
1516 | return -1; | |
1517 | if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) { | |
748a9306 | 1518 | SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */ |
c2ab57d4 LW |
1519 | return -1; |
1520 | } | |
a0d0e21e | 1521 | shm = (Shmat_t)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0); |
c2ab57d4 LW |
1522 | if (shm == (char *)-1) /* I hate System V IPC, I really do */ |
1523 | return -1; | |
79072805 | 1524 | if (optype == OP_SHMREAD) { |
a0d0e21e LW |
1525 | SvPV_force(mstr, len); |
1526 | mbuf = SvGROW(mstr, msize+1); | |
1527 | ||
bee1dbe2 | 1528 | Copy(shm + mpos, mbuf, msize, char); |
79072805 LW |
1529 | SvCUR_set(mstr, msize); |
1530 | *SvEND(mstr) = '\0'; | |
a0d0e21e | 1531 | SvSETMAGIC(mstr); |
c2ab57d4 LW |
1532 | } |
1533 | else { | |
79072805 | 1534 | I32 n; |
c2ab57d4 | 1535 | |
a0d0e21e | 1536 | mbuf = SvPV(mstr, len); |
463ee0b2 | 1537 | if ((n = len) > msize) |
c2ab57d4 | 1538 | n = msize; |
bee1dbe2 | 1539 | Copy(mbuf, shm + mpos, n, char); |
c2ab57d4 | 1540 | if (n < msize) |
bee1dbe2 | 1541 | memzero(shm + mpos + n, msize - n); |
c2ab57d4 LW |
1542 | } |
1543 | return shmdt(shm); | |
e5d73d77 | 1544 | #else |
463ee0b2 | 1545 | croak("shm I/O not implemented"); |
e5d73d77 | 1546 | #endif |
c2ab57d4 LW |
1547 | } |
1548 | ||
fe14fcc3 | 1549 | #endif /* SYSV IPC */ |