Commit | Line | Data |
a0d0e21e |
1 | /* doio.c |
a687059c |
2 | * |
9607fc9c |
3 | * Copyright (c) 1991-1997, Larry Wall |
a687059c |
4 | * |
6e21c824 |
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 |
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 |
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 |
30 | # ifndef HAS_SHMAT_PROTOTYPE |
31 | extern Shmat_t shmat _((int, char *, int)); |
32 | # endif |
c2ab57d4 |
33 | #endif |
e5d73d77 |
34 | #endif |
c2ab57d4 |
35 | |
663a0e37 |
36 | #ifdef I_UTIME |
3e3baf6d |
37 | # ifdef _MSC_VER |
3fe9a6f1 |
38 | # include <sys/utime.h> |
39 | # else |
40 | # include <utime.h> |
41 | # endif |
663a0e37 |
42 | #endif |
ff8e2863 |
43 | #ifdef I_FCNTL |
44 | #include <fcntl.h> |
45 | #endif |
fe14fcc3 |
46 | #ifdef I_SYS_FILE |
47 | #include <sys/file.h> |
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 |
59 | #if defined(HAS_SOCKET) && !defined(VMS) /* VMS handles sockets via vmsish.h */ |
60 | # include <sys/socket.h> |
61 | # include <netdb.h> |
62 | # ifndef ENOTSOCK |
63 | # ifdef I_NET_ERRNO |
64 | # include <net/errno.h> |
65 | # endif |
66 | # endif |
67 | #endif |
68 | |
d574b85e |
69 | /* Put this after #includes because <unistd.h> defines _XOPEN_*. */ |
70 | #ifndef Sock_size_t |
137443ea |
71 | # if _XOPEN_VERSION >= 5 || defined(_XOPEN_SOURCE_EXTENDED) || defined(__GLIBC__) |
d574b85e |
72 | # define Sock_size_t Size_t |
73 | # else |
74 | # define Sock_size_t int |
75 | # endif |
76 | #endif |
77 | |
a687059c |
78 | bool |
8ac85365 |
79 | do_open(GV *gv, register char *name, I32 len, int as_raw, int rawmode, int rawperm, FILE *supplied_fp) |
a687059c |
80 | { |
a0d0e21e |
81 | register IO *io = GvIOn(gv); |
760ac839 |
82 | PerlIO *saveifp = Nullfp; |
83 | PerlIO *saveofp = Nullfp; |
6e21c824 |
84 | char savetype = ' '; |
c07a80fd |
85 | int writing = 0; |
760ac839 |
86 | PerlIO *fp; |
c07a80fd |
87 | int fd; |
88 | int result; |
a687059c |
89 | |
a687059c |
90 | forkprocess = 1; /* assume true if no fork */ |
c07a80fd |
91 | |
a0d0e21e |
92 | if (IoIFP(io)) { |
760ac839 |
93 | fd = PerlIO_fileno(IoIFP(io)); |
8990e307 |
94 | if (IoTYPE(io) == '-') |
c2ab57d4 |
95 | result = 0; |
6e21c824 |
96 | else if (fd <= maxsysfd) { |
8990e307 |
97 | saveifp = IoIFP(io); |
98 | saveofp = IoOFP(io); |
99 | savetype = IoTYPE(io); |
6e21c824 |
100 | result = 0; |
101 | } |
8990e307 |
102 | else if (IoTYPE(io) == '|') |
103 | result = my_pclose(IoIFP(io)); |
104 | else if (IoIFP(io) != IoOFP(io)) { |
105 | if (IoOFP(io)) { |
760ac839 |
106 | result = PerlIO_close(IoOFP(io)); |
107 | PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */ |
c2ab57d4 |
108 | } |
109 | else |
760ac839 |
110 | result = PerlIO_close(IoIFP(io)); |
a687059c |
111 | } |
a687059c |
112 | else |
760ac839 |
113 | result = PerlIO_close(IoIFP(io)); |
6e21c824 |
114 | if (result == EOF && fd > maxsysfd) |
760ac839 |
115 | PerlIO_printf(PerlIO_stderr(), "Warning: unable to close filehandle %s properly.\n", |
79072805 |
116 | GvENAME(gv)); |
8990e307 |
117 | IoOFP(io) = IoIFP(io) = Nullfp; |
a687059c |
118 | } |
c07a80fd |
119 | |
120 | if (as_raw) { |
121 | result = rawmode & 3; |
122 | IoTYPE(io) = "<>++"[result]; |
123 | writing = (result > 0); |
124 | fd = open(name, rawmode, rawperm); |
125 | if (fd == -1) |
126 | fp = NULL; |
127 | else { |
360e5741 |
128 | char *fpmode; |
129 | if (result == 0) |
130 | fpmode = "r"; |
131 | #ifdef O_APPEND |
132 | else if (rawmode & O_APPEND) |
133 | fpmode = (result == 1) ? "a" : "a+"; |
134 | #endif |
135 | else |
136 | fpmode = (result == 1) ? "w" : "r+"; |
137 | fp = PerlIO_fdopen(fd, fpmode); |
c07a80fd |
138 | if (!fp) |
139 | close(fd); |
140 | } |
a687059c |
141 | } |
c07a80fd |
142 | else { |
143 | char *myname; |
144 | char mode[3]; /* stdio file mode ("r\0" or "r+\0") */ |
145 | int dodup; |
146 | |
147 | myname = savepvn(name, len); |
148 | SAVEFREEPV(myname); |
149 | name = myname; |
150 | while (len && isSPACE(name[len-1])) |
151 | name[--len] = '\0'; |
152 | |
153 | mode[0] = mode[1] = mode[2] = '\0'; |
154 | IoTYPE(io) = *name; |
155 | if (*name == '+' && len > 1 && name[len-1] != '|') { /* scary */ |
156 | mode[1] = *name++; |
157 | --len; |
158 | writing = 1; |
a687059c |
159 | } |
c07a80fd |
160 | |
161 | if (*name == '|') { |
162 | /*SUPPRESS 530*/ |
163 | for (name++; isSPACE(*name); name++) ; |
164 | if (strNE(name,"-")) |
165 | TAINT_ENV(); |
166 | TAINT_PROPER("piped open"); |
167 | if (dowarn && name[strlen(name)-1] == '|') |
168 | warn("Can't do bidirectional pipe"); |
169 | fp = my_popen(name,"w"); |
170 | writing = 1; |
171 | } |
172 | else if (*name == '>') { |
173 | TAINT_PROPER("open"); |
bf38876a |
174 | name++; |
c07a80fd |
175 | if (*name == '>') { |
176 | mode[0] = IoTYPE(io) = 'a'; |
bf38876a |
177 | name++; |
a0d0e21e |
178 | } |
c07a80fd |
179 | else |
180 | mode[0] = 'w'; |
181 | writing = 1; |
182 | |
183 | if (*name == '&') { |
184 | duplicity: |
185 | dodup = 1; |
186 | name++; |
187 | if (*name == '=') { |
188 | dodup = 0; |
a0d0e21e |
189 | name++; |
c07a80fd |
190 | } |
191 | if (!*name && supplied_fp) |
192 | fp = supplied_fp; |
a0d0e21e |
193 | else { |
c07a80fd |
194 | /*SUPPRESS 530*/ |
195 | for (; isSPACE(*name); name++) ; |
196 | if (isDIGIT(*name)) |
197 | fd = atoi(name); |
198 | else { |
199 | IO* thatio; |
200 | gv = gv_fetchpv(name,FALSE,SVt_PVIO); |
201 | thatio = GvIO(gv); |
202 | if (!thatio) { |
6e21c824 |
203 | #ifdef EINVAL |
c07a80fd |
204 | SETERRNO(EINVAL,SS$_IVCHAN); |
6e21c824 |
205 | #endif |
c07a80fd |
206 | goto say_false; |
207 | } |
208 | if (IoIFP(thatio)) { |
760ac839 |
209 | fd = PerlIO_fileno(IoIFP(thatio)); |
c07a80fd |
210 | if (IoTYPE(thatio) == 's') |
211 | IoTYPE(io) = 's'; |
212 | } |
213 | else |
214 | fd = -1; |
a0d0e21e |
215 | } |
fec02dd3 |
216 | if (dodup) |
c07a80fd |
217 | fd = dup(fd); |
760ac839 |
218 | if (!(fp = PerlIO_fdopen(fd,mode))) { |
c07a80fd |
219 | if (dodup) |
220 | close(fd); |
517844ec |
221 | } |
c07a80fd |
222 | } |
bf38876a |
223 | } |
c07a80fd |
224 | else { |
225 | /*SUPPRESS 530*/ |
226 | for (; isSPACE(*name); name++) ; |
227 | if (strEQ(name,"-")) { |
760ac839 |
228 | fp = PerlIO_stdout(); |
c07a80fd |
229 | IoTYPE(io) = '-'; |
230 | } |
231 | else { |
760ac839 |
232 | fp = PerlIO_open(name,mode); |
c07a80fd |
233 | } |
bf38876a |
234 | } |
235 | } |
c07a80fd |
236 | else if (*name == '<') { |
237 | /*SUPPRESS 530*/ |
238 | for (name++; isSPACE(*name); name++) ; |
bf38876a |
239 | mode[0] = 'r'; |
bf38876a |
240 | if (*name == '&') |
241 | goto duplicity; |
a687059c |
242 | if (strEQ(name,"-")) { |
760ac839 |
243 | fp = PerlIO_stdin(); |
8990e307 |
244 | IoTYPE(io) = '-'; |
a687059c |
245 | } |
bf38876a |
246 | else |
760ac839 |
247 | fp = PerlIO_open(name,mode); |
a687059c |
248 | } |
249 | else if (name[len-1] == '|') { |
a687059c |
250 | name[--len] = '\0'; |
99b89507 |
251 | while (len && isSPACE(name[len-1])) |
a687059c |
252 | name[--len] = '\0'; |
99b89507 |
253 | /*SUPPRESS 530*/ |
254 | for (; isSPACE(*name); name++) ; |
79072805 |
255 | if (strNE(name,"-")) |
256 | TAINT_ENV(); |
257 | TAINT_PROPER("piped open"); |
258 | fp = my_popen(name,"r"); |
8990e307 |
259 | IoTYPE(io) = '|'; |
a687059c |
260 | } |
261 | else { |
8990e307 |
262 | IoTYPE(io) = '<'; |
99b89507 |
263 | /*SUPPRESS 530*/ |
264 | for (; isSPACE(*name); name++) ; |
a687059c |
265 | if (strEQ(name,"-")) { |
760ac839 |
266 | fp = PerlIO_stdin(); |
8990e307 |
267 | IoTYPE(io) = '-'; |
a687059c |
268 | } |
269 | else |
760ac839 |
270 | fp = PerlIO_open(name,"r"); |
a687059c |
271 | } |
272 | } |
bee1dbe2 |
273 | if (!fp) { |
8990e307 |
274 | if (dowarn && IoTYPE(io) == '<' && strchr(name, '\n')) |
bee1dbe2 |
275 | warn(warn_nl, "open"); |
6e21c824 |
276 | goto say_false; |
bee1dbe2 |
277 | } |
8990e307 |
278 | if (IoTYPE(io) && |
279 | IoTYPE(io) != '|' && IoTYPE(io) != '-') { |
96827780 |
280 | dTHR; |
760ac839 |
281 | if (Fstat(PerlIO_fileno(fp),&statbuf) < 0) { |
282 | (void)PerlIO_close(fp); |
6e21c824 |
283 | goto say_false; |
a687059c |
284 | } |
1462b684 |
285 | if (S_ISSOCK(statbuf.st_mode)) |
8990e307 |
286 | IoTYPE(io) = 's'; /* in case a socket was passed in to us */ |
99b89507 |
287 | #ifdef HAS_SOCKET |
288 | else if ( |
c623bd54 |
289 | #ifdef S_IFMT |
99b89507 |
290 | !(statbuf.st_mode & S_IFMT) |
291 | #else |
292 | !statbuf.st_mode |
293 | #endif |
294 | ) { |
96827780 |
295 | char tmpbuf[256]; |
296 | Sock_size_t buflen = sizeof tmpbuf; |
297 | if (getsockname(PerlIO_fileno(fp), (struct sockaddr *)tmpbuf, |
d574b85e |
298 | &buflen) >= 0 |
299 | || errno != ENOTSOCK) |
8990e307 |
300 | IoTYPE(io) = 's'; /* some OS's return 0 on fstat()ed socket */ |
99b89507 |
301 | /* but some return 0 for streams too, sigh */ |
302 | } |
bf38876a |
303 | #endif |
a687059c |
304 | } |
6e21c824 |
305 | if (saveifp) { /* must use old fp? */ |
760ac839 |
306 | fd = PerlIO_fileno(saveifp); |
6e21c824 |
307 | if (saveofp) { |
760ac839 |
308 | PerlIO_flush(saveofp); /* emulate PerlIO_close() */ |
6e21c824 |
309 | if (saveofp != saveifp) { /* was a socket? */ |
760ac839 |
310 | PerlIO_close(saveofp); |
99b89507 |
311 | if (fd > 2) |
312 | Safefree(saveofp); |
6e21c824 |
313 | } |
314 | } |
760ac839 |
315 | if (fd != PerlIO_fileno(fp)) { |
bee1dbe2 |
316 | int pid; |
79072805 |
317 | SV *sv; |
bee1dbe2 |
318 | |
760ac839 |
319 | dup2(PerlIO_fileno(fp), fd); |
320 | sv = *av_fetch(fdpid,PerlIO_fileno(fp),TRUE); |
a0d0e21e |
321 | (void)SvUPGRADE(sv, SVt_IV); |
463ee0b2 |
322 | pid = SvIVX(sv); |
323 | SvIVX(sv) = 0; |
79072805 |
324 | sv = *av_fetch(fdpid,fd,TRUE); |
a0d0e21e |
325 | (void)SvUPGRADE(sv, SVt_IV); |
463ee0b2 |
326 | SvIVX(sv) = pid; |
760ac839 |
327 | PerlIO_close(fp); |
bee1dbe2 |
328 | |
6e21c824 |
329 | } |
330 | fp = saveifp; |
760ac839 |
331 | PerlIO_clearerr(fp); |
6e21c824 |
332 | } |
a0d0e21e |
333 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
760ac839 |
334 | fd = PerlIO_fileno(fp); |
a0d0e21e |
335 | fcntl(fd,F_SETFD,fd > maxsysfd); |
1462b684 |
336 | #endif |
8990e307 |
337 | IoIFP(io) = fp; |
bf38876a |
338 | if (writing) { |
96827780 |
339 | dTHR; |
8990e307 |
340 | if (IoTYPE(io) == 's' |
341 | || (IoTYPE(io) == '>' && S_ISCHR(statbuf.st_mode)) ) { |
760ac839 |
342 | if (!(IoOFP(io) = PerlIO_fdopen(PerlIO_fileno(fp),"w"))) { |
343 | PerlIO_close(fp); |
8990e307 |
344 | IoIFP(io) = Nullfp; |
6e21c824 |
345 | goto say_false; |
fe14fcc3 |
346 | } |
1462b684 |
347 | } |
348 | else |
8990e307 |
349 | IoOFP(io) = fp; |
bf38876a |
350 | } |
a687059c |
351 | return TRUE; |
6e21c824 |
352 | |
353 | say_false: |
8990e307 |
354 | IoIFP(io) = saveifp; |
355 | IoOFP(io) = saveofp; |
356 | IoTYPE(io) = savetype; |
6e21c824 |
357 | return FALSE; |
a687059c |
358 | } |
359 | |
760ac839 |
360 | PerlIO * |
8ac85365 |
361 | nextargv(register GV *gv) |
a687059c |
362 | { |
79072805 |
363 | register SV *sv; |
99b89507 |
364 | #ifndef FLEXFILENAMES |
c623bd54 |
365 | int filedev; |
366 | int fileino; |
99b89507 |
367 | #endif |
c623bd54 |
368 | int fileuid; |
369 | int filegid; |
fe14fcc3 |
370 | |
79072805 |
371 | if (!argvoutgv) |
85e6fe83 |
372 | argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO); |
fe14fcc3 |
373 | if (filemode & (S_ISUID|S_ISGID)) { |
760ac839 |
374 | PerlIO_flush(IoIFP(GvIOn(argvoutgv))); /* chmod must follow last write */ |
fe14fcc3 |
375 | #ifdef HAS_FCHMOD |
376 | (void)fchmod(lastfd,filemode); |
377 | #else |
378 | (void)chmod(oldname,filemode); |
379 | #endif |
380 | } |
381 | filemode = 0; |
79072805 |
382 | while (av_len(GvAV(gv)) >= 0) { |
11343788 |
383 | dTHR; |
463ee0b2 |
384 | STRLEN len; |
79072805 |
385 | sv = av_shift(GvAV(gv)); |
8990e307 |
386 | SAVEFREESV(sv); |
79072805 |
387 | sv_setsv(GvSV(gv),sv); |
388 | SvSETMAGIC(GvSV(gv)); |
463ee0b2 |
389 | oldname = SvPVx(GvSV(gv), len); |
c07a80fd |
390 | if (do_open(gv,oldname,len,FALSE,0,0,Nullfp)) { |
a687059c |
391 | if (inplace) { |
79072805 |
392 | TAINT_PROPER("inplace open"); |
c623bd54 |
393 | if (strEQ(oldname,"-")) { |
4633a7c4 |
394 | setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO)); |
a0d0e21e |
395 | return IoIFP(GvIOp(gv)); |
c623bd54 |
396 | } |
99b89507 |
397 | #ifndef FLEXFILENAMES |
c623bd54 |
398 | filedev = statbuf.st_dev; |
399 | fileino = statbuf.st_ino; |
99b89507 |
400 | #endif |
a687059c |
401 | filemode = statbuf.st_mode; |
402 | fileuid = statbuf.st_uid; |
403 | filegid = statbuf.st_gid; |
c623bd54 |
404 | if (!S_ISREG(filemode)) { |
405 | warn("Can't do inplace edit: %s is not a regular file", |
406 | oldname ); |
79072805 |
407 | do_close(gv,FALSE); |
c623bd54 |
408 | continue; |
409 | } |
a687059c |
410 | if (*inplace) { |
ff8e2863 |
411 | #ifdef SUFFIX |
79072805 |
412 | add_suffix(sv,inplace); |
ff8e2863 |
413 | #else |
79072805 |
414 | sv_catpv(sv,inplace); |
ff8e2863 |
415 | #endif |
c623bd54 |
416 | #ifndef FLEXFILENAMES |
a0d0e21e |
417 | if (Stat(SvPVX(sv),&statbuf) >= 0 |
c623bd54 |
418 | && statbuf.st_dev == filedev |
39e571d4 |
419 | && statbuf.st_ino == fileino |
420 | #ifdef DJGPP |
421 | || (_djstat_fail_bits & _STFAIL_TRUENAME)!=0 |
422 | #endif |
423 | ) { |
424 | warn("Can't do inplace edit: %s would not be uniq", |
463ee0b2 |
425 | SvPVX(sv) ); |
79072805 |
426 | do_close(gv,FALSE); |
c623bd54 |
427 | continue; |
428 | } |
429 | #endif |
fe14fcc3 |
430 | #ifdef HAS_RENAME |
bee1dbe2 |
431 | #ifndef DOSISH |
463ee0b2 |
432 | if (rename(oldname,SvPVX(sv)) < 0) { |
c623bd54 |
433 | warn("Can't rename %s to %s: %s, skipping file", |
2304df62 |
434 | oldname, SvPVX(sv), Strerror(errno) ); |
79072805 |
435 | do_close(gv,FALSE); |
c623bd54 |
436 | continue; |
437 | } |
a687059c |
438 | #else |
79072805 |
439 | do_close(gv,FALSE); |
463ee0b2 |
440 | (void)unlink(SvPVX(sv)); |
441 | (void)rename(oldname,SvPVX(sv)); |
1193dd27 |
442 | do_open(gv,SvPVX(sv),SvCUR(sv),FALSE,0,0,Nullfp); |
55497cff |
443 | #endif /* DOSISH */ |
ff8e2863 |
444 | #else |
463ee0b2 |
445 | (void)UNLINK(SvPVX(sv)); |
446 | if (link(oldname,SvPVX(sv)) < 0) { |
c623bd54 |
447 | warn("Can't rename %s to %s: %s, skipping file", |
2304df62 |
448 | oldname, SvPVX(sv), Strerror(errno) ); |
79072805 |
449 | do_close(gv,FALSE); |
c623bd54 |
450 | continue; |
451 | } |
a687059c |
452 | (void)UNLINK(oldname); |
453 | #endif |
454 | } |
455 | else { |
a8c18271 |
456 | #if !defined(DOSISH) && !defined(AMIGAOS) |
edc7bc49 |
457 | # ifndef VMS /* Don't delete; use automatic file versioning */ |
fe14fcc3 |
458 | if (UNLINK(oldname) < 0) { |
459 | warn("Can't rename %s to %s: %s, skipping file", |
2304df62 |
460 | oldname, SvPVX(sv), Strerror(errno) ); |
79072805 |
461 | do_close(gv,FALSE); |
fe14fcc3 |
462 | continue; |
463 | } |
edc7bc49 |
464 | # endif |
ff8e2863 |
465 | #else |
463ee0b2 |
466 | croak("Can't do inplace edit without backup"); |
ff8e2863 |
467 | #endif |
a687059c |
468 | } |
469 | |
79072805 |
470 | sv_setpvn(sv,">",1); |
471 | sv_catpv(sv,oldname); |
748a9306 |
472 | SETERRNO(0,0); /* in case sprintf set errno */ |
c07a80fd |
473 | if (!do_open(argvoutgv,SvPVX(sv),SvCUR(sv),FALSE,0,0,Nullfp)) { |
c623bd54 |
474 | warn("Can't do inplace edit on %s: %s", |
2304df62 |
475 | oldname, Strerror(errno) ); |
79072805 |
476 | do_close(gv,FALSE); |
fe14fcc3 |
477 | continue; |
478 | } |
4633a7c4 |
479 | setdefout(argvoutgv); |
760ac839 |
480 | lastfd = PerlIO_fileno(IoIFP(GvIOp(argvoutgv))); |
a0d0e21e |
481 | (void)Fstat(lastfd,&statbuf); |
fe14fcc3 |
482 | #ifdef HAS_FCHMOD |
483 | (void)fchmod(lastfd,filemode); |
a687059c |
484 | #else |
3e3baf6d |
485 | # if !(defined(WIN32) && defined(__BORLANDC__)) |
486 | /* Borland runtime creates a readonly file! */ |
a687059c |
487 | (void)chmod(oldname,filemode); |
3e3baf6d |
488 | # endif |
a687059c |
489 | #endif |
fe14fcc3 |
490 | if (fileuid != statbuf.st_uid || filegid != statbuf.st_gid) { |
491 | #ifdef HAS_FCHOWN |
492 | (void)fchown(lastfd,fileuid,filegid); |
a687059c |
493 | #else |
fe14fcc3 |
494 | #ifdef HAS_CHOWN |
495 | (void)chown(oldname,fileuid,filegid); |
a687059c |
496 | #endif |
b1248f16 |
497 | #endif |
fe14fcc3 |
498 | } |
a687059c |
499 | } |
a0d0e21e |
500 | return IoIFP(GvIOp(gv)); |
a687059c |
501 | } |
502 | else |
760ac839 |
503 | PerlIO_printf(PerlIO_stderr(), "Can't open %s: %s\n",SvPV(sv, na), Strerror(errno)); |
a687059c |
504 | } |
505 | if (inplace) { |
79072805 |
506 | (void)do_close(argvoutgv,FALSE); |
4633a7c4 |
507 | setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO)); |
a687059c |
508 | } |
509 | return Nullfp; |
510 | } |
511 | |
fe14fcc3 |
512 | #ifdef HAS_PIPE |
afd9f252 |
513 | void |
8ac85365 |
514 | do_pipe(SV *sv, GV *rgv, GV *wgv) |
afd9f252 |
515 | { |
79072805 |
516 | register IO *rstio; |
517 | register IO *wstio; |
afd9f252 |
518 | int fd[2]; |
519 | |
79072805 |
520 | if (!rgv) |
afd9f252 |
521 | goto badexit; |
79072805 |
522 | if (!wgv) |
afd9f252 |
523 | goto badexit; |
524 | |
a0d0e21e |
525 | rstio = GvIOn(rgv); |
526 | wstio = GvIOn(wgv); |
afd9f252 |
527 | |
a0d0e21e |
528 | if (IoIFP(rstio)) |
79072805 |
529 | do_close(rgv,FALSE); |
a0d0e21e |
530 | if (IoIFP(wstio)) |
79072805 |
531 | do_close(wgv,FALSE); |
afd9f252 |
532 | |
533 | if (pipe(fd) < 0) |
534 | goto badexit; |
760ac839 |
535 | IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"); |
536 | IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"); |
8990e307 |
537 | IoIFP(wstio) = IoOFP(wstio); |
538 | IoTYPE(rstio) = '<'; |
539 | IoTYPE(wstio) = '>'; |
540 | if (!IoIFP(rstio) || !IoOFP(wstio)) { |
760ac839 |
541 | if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio)); |
fe14fcc3 |
542 | else close(fd[0]); |
760ac839 |
543 | if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio)); |
fe14fcc3 |
544 | else close(fd[1]); |
545 | goto badexit; |
546 | } |
afd9f252 |
547 | |
79072805 |
548 | sv_setsv(sv,&sv_yes); |
afd9f252 |
549 | return; |
550 | |
551 | badexit: |
79072805 |
552 | sv_setsv(sv,&sv_undef); |
afd9f252 |
553 | return; |
554 | } |
b1248f16 |
555 | #endif |
afd9f252 |
556 | |
517844ec |
557 | /* explicit renamed to avoid C++ conflict -- kja */ |
a687059c |
558 | bool |
a0d0e21e |
559 | #ifndef CAN_PROTOTYPE |
517844ec |
560 | do_close(gv,not_implicit) |
79072805 |
561 | GV *gv; |
517844ec |
562 | bool not_implicit; |
8990e307 |
563 | #else |
517844ec |
564 | do_close(GV *gv, bool not_implicit) |
a0d0e21e |
565 | #endif /* CAN_PROTOTYPE */ |
a687059c |
566 | { |
1193dd27 |
567 | bool retval; |
568 | IO *io; |
a687059c |
569 | |
79072805 |
570 | if (!gv) |
571 | gv = argvgv; |
a0d0e21e |
572 | if (!gv || SvTYPE(gv) != SVt_PVGV) { |
748a9306 |
573 | SETERRNO(EBADF,SS$_IVCHAN); |
c2ab57d4 |
574 | return FALSE; |
99b89507 |
575 | } |
79072805 |
576 | io = GvIO(gv); |
577 | if (!io) { /* never opened */ |
517844ec |
578 | if (dowarn && not_implicit) |
79072805 |
579 | warn("Close on unopened file <%s>",GvENAME(gv)); |
a687059c |
580 | return FALSE; |
581 | } |
1193dd27 |
582 | retval = io_close(io); |
517844ec |
583 | if (not_implicit) { |
1193dd27 |
584 | IoLINES(io) = 0; |
585 | IoPAGE(io) = 0; |
586 | IoLINES_LEFT(io) = IoPAGE_LEN(io); |
587 | } |
588 | IoTYPE(io) = ' '; |
589 | return retval; |
590 | } |
591 | |
592 | bool |
8ac85365 |
593 | io_close(IO *io) |
1193dd27 |
594 | { |
595 | bool retval = FALSE; |
596 | int status; |
597 | |
8990e307 |
598 | if (IoIFP(io)) { |
599 | if (IoTYPE(io) == '|') { |
600 | status = my_pclose(IoIFP(io)); |
f86702cc |
601 | STATUS_NATIVE_SET(status); |
1e422769 |
602 | retval = (STATUS_POSIX == 0); |
a687059c |
603 | } |
8990e307 |
604 | else if (IoTYPE(io) == '-') |
a687059c |
605 | retval = TRUE; |
606 | else { |
8990e307 |
607 | if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */ |
760ac839 |
608 | retval = (PerlIO_close(IoOFP(io)) != EOF); |
609 | PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */ |
c2ab57d4 |
610 | } |
611 | else |
760ac839 |
612 | retval = (PerlIO_close(IoIFP(io)) != EOF); |
a687059c |
613 | } |
8990e307 |
614 | IoOFP(io) = IoIFP(io) = Nullfp; |
79072805 |
615 | } |
1193dd27 |
616 | |
a687059c |
617 | return retval; |
618 | } |
619 | |
620 | bool |
8ac85365 |
621 | do_eof(GV *gv) |
a687059c |
622 | { |
11343788 |
623 | dTHR; |
79072805 |
624 | register IO *io; |
a687059c |
625 | int ch; |
626 | |
79072805 |
627 | io = GvIO(gv); |
a687059c |
628 | |
79072805 |
629 | if (!io) |
a687059c |
630 | return TRUE; |
631 | |
8990e307 |
632 | while (IoIFP(io)) { |
a687059c |
633 | |
760ac839 |
634 | if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */ |
635 | if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */ |
636 | return FALSE; /* this is the most usual case */ |
637 | } |
a687059c |
638 | |
760ac839 |
639 | ch = PerlIO_getc(IoIFP(io)); |
a687059c |
640 | if (ch != EOF) { |
760ac839 |
641 | (void)PerlIO_ungetc(IoIFP(io),ch); |
a687059c |
642 | return FALSE; |
643 | } |
760ac839 |
644 | if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) { |
645 | if (PerlIO_get_cnt(IoIFP(io)) < -1) |
646 | PerlIO_set_cnt(IoIFP(io),-1); |
647 | } |
8990e307 |
648 | if (op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */ |
79072805 |
649 | if (!nextargv(argvgv)) /* get another fp handy */ |
a687059c |
650 | return TRUE; |
651 | } |
652 | else |
653 | return TRUE; /* normal fp, definitely end of file */ |
654 | } |
655 | return TRUE; |
656 | } |
657 | |
658 | long |
8ac85365 |
659 | do_tell(GV *gv) |
a687059c |
660 | { |
79072805 |
661 | register IO *io; |
96e4d5b1 |
662 | register PerlIO *fp; |
a687059c |
663 | |
96e4d5b1 |
664 | if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) { |
bee1dbe2 |
665 | #ifdef ULTRIX_STDIO_BOTCH |
96e4d5b1 |
666 | if (PerlIO_eof(fp)) |
667 | (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */ |
bee1dbe2 |
668 | #endif |
8903cb82 |
669 | return PerlIO_tell(fp); |
96e4d5b1 |
670 | } |
a687059c |
671 | if (dowarn) |
8903cb82 |
672 | warn("tell() on unopened file"); |
748a9306 |
673 | SETERRNO(EBADF,RMS$_IFI); |
a687059c |
674 | return -1L; |
675 | } |
676 | |
677 | bool |
8ac85365 |
678 | do_seek(GV *gv, long int pos, int whence) |
a687059c |
679 | { |
79072805 |
680 | register IO *io; |
137443ea |
681 | register PerlIO *fp; |
a687059c |
682 | |
137443ea |
683 | if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) { |
bee1dbe2 |
684 | #ifdef ULTRIX_STDIO_BOTCH |
137443ea |
685 | if (PerlIO_eof(fp)) |
686 | (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */ |
bee1dbe2 |
687 | #endif |
8903cb82 |
688 | return PerlIO_seek(fp, pos, whence) >= 0; |
137443ea |
689 | } |
a687059c |
690 | if (dowarn) |
8903cb82 |
691 | warn("seek() on unopened file"); |
748a9306 |
692 | SETERRNO(EBADF,RMS$_IFI); |
a687059c |
693 | return FALSE; |
694 | } |
695 | |
8903cb82 |
696 | long |
8ac85365 |
697 | do_sysseek(GV *gv, long int pos, int whence) |
8903cb82 |
698 | { |
699 | register IO *io; |
700 | register PerlIO *fp; |
701 | |
702 | if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) |
703 | return lseek(PerlIO_fileno(fp), pos, whence); |
704 | if (dowarn) |
705 | warn("sysseek() on unopened file"); |
706 | SETERRNO(EBADF,RMS$_IFI); |
707 | return -1L; |
708 | } |
709 | |
a0d0e21e |
710 | #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP) |
c2ab57d4 |
711 | /* code courtesy of William Kucharski */ |
fe14fcc3 |
712 | #define HAS_CHSIZE |
6eb13c3b |
713 | |
517844ec |
714 | I32 my_chsize(fd, length) |
79072805 |
715 | I32 fd; /* file descriptor */ |
85e6fe83 |
716 | Off_t length; /* length to set file to */ |
6eb13c3b |
717 | { |
6eb13c3b |
718 | struct flock fl; |
719 | struct stat filebuf; |
720 | |
a0d0e21e |
721 | if (Fstat(fd, &filebuf) < 0) |
6eb13c3b |
722 | return -1; |
723 | |
724 | if (filebuf.st_size < length) { |
725 | |
726 | /* extend file length */ |
727 | |
728 | if ((lseek(fd, (length - 1), 0)) < 0) |
729 | return -1; |
730 | |
731 | /* write a "0" byte */ |
732 | |
733 | if ((write(fd, "", 1)) != 1) |
734 | return -1; |
735 | } |
736 | else { |
737 | /* truncate length */ |
738 | |
739 | fl.l_whence = 0; |
740 | fl.l_len = 0; |
741 | fl.l_start = length; |
a0d0e21e |
742 | fl.l_type = F_WRLCK; /* write lock on file space */ |
6eb13c3b |
743 | |
744 | /* |
a0d0e21e |
745 | * This relies on the UNDOCUMENTED F_FREESP argument to |
6eb13c3b |
746 | * fcntl(2), which truncates the file so that it ends at the |
747 | * position indicated by fl.l_start. |
748 | * |
749 | * Will minor miracles never cease? |
750 | */ |
751 | |
a0d0e21e |
752 | if (fcntl(fd, F_FREESP, &fl) < 0) |
6eb13c3b |
753 | return -1; |
754 | |
755 | } |
756 | |
757 | return 0; |
758 | } |
a0d0e21e |
759 | #endif /* F_FREESP */ |
ff8e2863 |
760 | |
a687059c |
761 | bool |
8ac85365 |
762 | do_print(register SV *sv, FILE *fp) |
a687059c |
763 | { |
764 | register char *tmps; |
463ee0b2 |
765 | STRLEN len; |
a687059c |
766 | |
79072805 |
767 | /* assuming fp is checked earlier */ |
768 | if (!sv) |
769 | return TRUE; |
770 | if (ofmt) { |
8990e307 |
771 | if (SvGMAGICAL(sv)) |
79072805 |
772 | mg_get(sv); |
463ee0b2 |
773 | if (SvIOK(sv) && SvIVX(sv) != 0) { |
760ac839 |
774 | PerlIO_printf(fp, ofmt, (double)SvIVX(sv)); |
775 | return !PerlIO_error(fp); |
79072805 |
776 | } |
463ee0b2 |
777 | if ( (SvNOK(sv) && SvNVX(sv) != 0.0) |
79072805 |
778 | || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) { |
760ac839 |
779 | PerlIO_printf(fp, ofmt, SvNVX(sv)); |
780 | return !PerlIO_error(fp); |
79072805 |
781 | } |
a687059c |
782 | } |
79072805 |
783 | switch (SvTYPE(sv)) { |
784 | case SVt_NULL: |
8990e307 |
785 | if (dowarn) |
786 | warn(warn_uninit); |
ff8e2863 |
787 | return TRUE; |
79072805 |
788 | case SVt_IV: |
a0d0e21e |
789 | if (SvIOK(sv)) { |
790 | if (SvGMAGICAL(sv)) |
791 | mg_get(sv); |
760ac839 |
792 | PerlIO_printf(fp, "%ld", (long)SvIVX(sv)); |
793 | return !PerlIO_error(fp); |
a0d0e21e |
794 | } |
795 | /* FALL THROUGH */ |
79072805 |
796 | default: |
463ee0b2 |
797 | tmps = SvPV(sv, len); |
79072805 |
798 | break; |
ff8e2863 |
799 | } |
760ac839 |
800 | if (len && (PerlIO_write(fp,tmps,len) == 0 || PerlIO_error(fp))) |
a687059c |
801 | return FALSE; |
760ac839 |
802 | return !PerlIO_error(fp); |
a687059c |
803 | } |
804 | |
79072805 |
805 | I32 |
8ac85365 |
806 | my_stat(ARGSproto) |
a687059c |
807 | { |
4e35701f |
808 | djSP; |
79072805 |
809 | IO *io; |
748a9306 |
810 | GV* tmpgv; |
79072805 |
811 | |
a0d0e21e |
812 | if (op->op_flags & OPf_REF) { |
79072805 |
813 | EXTEND(sp,1); |
748a9306 |
814 | tmpgv = cGVOP->op_gv; |
815 | do_fstat: |
816 | io = GvIO(tmpgv); |
8990e307 |
817 | if (io && IoIFP(io)) { |
748a9306 |
818 | statgv = tmpgv; |
79072805 |
819 | sv_setpv(statname,""); |
820 | laststype = OP_STAT; |
760ac839 |
821 | return (laststatval = Fstat(PerlIO_fileno(IoIFP(io)), &statcache)); |
a687059c |
822 | } |
823 | else { |
748a9306 |
824 | if (tmpgv == defgv) |
57ebbfd0 |
825 | return laststatval; |
a687059c |
826 | if (dowarn) |
827 | warn("Stat on unopened file <%s>", |
748a9306 |
828 | GvENAME(tmpgv)); |
79072805 |
829 | statgv = Nullgv; |
830 | sv_setpv(statname,""); |
57ebbfd0 |
831 | return (laststatval = -1); |
a687059c |
832 | } |
833 | } |
834 | else { |
748a9306 |
835 | SV* sv = POPs; |
79072805 |
836 | PUTBACK; |
748a9306 |
837 | if (SvTYPE(sv) == SVt_PVGV) { |
838 | tmpgv = (GV*)sv; |
839 | goto do_fstat; |
840 | } |
841 | else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) { |
842 | tmpgv = (GV*)SvRV(sv); |
843 | goto do_fstat; |
844 | } |
845 | |
79072805 |
846 | statgv = Nullgv; |
463ee0b2 |
847 | sv_setpv(statname,SvPV(sv, na)); |
79072805 |
848 | laststype = OP_STAT; |
a0d0e21e |
849 | laststatval = Stat(SvPV(sv, na),&statcache); |
463ee0b2 |
850 | if (laststatval < 0 && dowarn && strchr(SvPV(sv, na), '\n')) |
bee1dbe2 |
851 | warn(warn_nl, "stat"); |
852 | return laststatval; |
a687059c |
853 | } |
854 | } |
855 | |
79072805 |
856 | I32 |
8ac85365 |
857 | my_lstat(ARGSproto) |
c623bd54 |
858 | { |
4e35701f |
859 | djSP; |
79072805 |
860 | SV *sv; |
a0d0e21e |
861 | if (op->op_flags & OPf_REF) { |
79072805 |
862 | EXTEND(sp,1); |
863 | if (cGVOP->op_gv == defgv) { |
864 | if (laststype != OP_LSTAT) |
463ee0b2 |
865 | croak("The stat preceding -l _ wasn't an lstat"); |
fe14fcc3 |
866 | return laststatval; |
867 | } |
463ee0b2 |
868 | croak("You can't use -l on a filehandle"); |
fe14fcc3 |
869 | } |
c623bd54 |
870 | |
79072805 |
871 | laststype = OP_LSTAT; |
872 | statgv = Nullgv; |
873 | sv = POPs; |
874 | PUTBACK; |
463ee0b2 |
875 | sv_setpv(statname,SvPV(sv, na)); |
fe14fcc3 |
876 | #ifdef HAS_LSTAT |
463ee0b2 |
877 | laststatval = lstat(SvPV(sv, na),&statcache); |
c623bd54 |
878 | #else |
a0d0e21e |
879 | laststatval = Stat(SvPV(sv, na),&statcache); |
c623bd54 |
880 | #endif |
463ee0b2 |
881 | if (laststatval < 0 && dowarn && strchr(SvPV(sv, na), '\n')) |
bee1dbe2 |
882 | warn(warn_nl, "lstat"); |
883 | return laststatval; |
c623bd54 |
884 | } |
885 | |
a687059c |
886 | bool |
8ac85365 |
887 | do_aexec(SV *really, register SV **mark, register SV **sp) |
a687059c |
888 | { |
a687059c |
889 | register char **a; |
a687059c |
890 | char *tmps; |
891 | |
79072805 |
892 | if (sp > mark) { |
11343788 |
893 | dTHR; |
79072805 |
894 | New(401,Argv, sp - mark + 1, char*); |
bee1dbe2 |
895 | a = Argv; |
79072805 |
896 | while (++mark <= sp) { |
897 | if (*mark) |
463ee0b2 |
898 | *a++ = SvPVx(*mark, na); |
a687059c |
899 | else |
900 | *a++ = ""; |
901 | } |
902 | *a = Nullch; |
bee1dbe2 |
903 | if (*Argv[0] != '/') /* will execvp use PATH? */ |
79072805 |
904 | TAINT_ENV(); /* testing IFS here is overkill, probably */ |
463ee0b2 |
905 | if (really && *(tmps = SvPV(really, na))) |
bee1dbe2 |
906 | execvp(tmps,Argv); |
a687059c |
907 | else |
bee1dbe2 |
908 | execvp(Argv[0],Argv); |
a0d0e21e |
909 | if (dowarn) |
910 | warn("Can't exec \"%s\": %s", Argv[0], Strerror(errno)); |
a687059c |
911 | } |
bee1dbe2 |
912 | do_execfree(); |
a687059c |
913 | return FALSE; |
914 | } |
915 | |
fe14fcc3 |
916 | void |
8ac85365 |
917 | do_execfree(void) |
ff8e2863 |
918 | { |
919 | if (Argv) { |
920 | Safefree(Argv); |
921 | Argv = Null(char **); |
922 | } |
923 | if (Cmd) { |
924 | Safefree(Cmd); |
925 | Cmd = Nullch; |
926 | } |
927 | } |
928 | |
39e571d4 |
929 | #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) |
760ac839 |
930 | |
a687059c |
931 | bool |
8ac85365 |
932 | do_exec(char *cmd) |
a687059c |
933 | { |
934 | register char **a; |
935 | register char *s; |
a687059c |
936 | char flags[10]; |
937 | |
748a9306 |
938 | while (*cmd && isSPACE(*cmd)) |
939 | cmd++; |
940 | |
a687059c |
941 | /* save an extra exec if possible */ |
942 | |
bf38876a |
943 | #ifdef CSH |
944 | if (strnEQ(cmd,cshname,cshlen) && strnEQ(cmd+cshlen," -c",3)) { |
a687059c |
945 | strcpy(flags,"-c"); |
bf38876a |
946 | s = cmd+cshlen+3; |
a687059c |
947 | if (*s == 'f') { |
948 | s++; |
949 | strcat(flags,"f"); |
950 | } |
951 | if (*s == ' ') |
952 | s++; |
953 | if (*s++ == '\'') { |
954 | char *ncmd = s; |
955 | |
956 | while (*s) |
957 | s++; |
958 | if (s[-1] == '\n') |
959 | *--s = '\0'; |
960 | if (s[-1] == '\'') { |
961 | *--s = '\0'; |
bf38876a |
962 | execl(cshname,"csh", flags,ncmd,(char*)0); |
a687059c |
963 | *s = '\''; |
964 | return FALSE; |
965 | } |
966 | } |
967 | } |
bf38876a |
968 | #endif /* CSH */ |
a687059c |
969 | |
970 | /* see if there are shell metacharacters in it */ |
971 | |
748a9306 |
972 | if (*cmd == '.' && isSPACE(cmd[1])) |
973 | goto doshell; |
974 | |
975 | if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4])) |
976 | goto doshell; |
977 | |
99b89507 |
978 | for (s = cmd; *s && isALPHA(*s); s++) ; /* catch VAR=val gizmo */ |
63f2c1e1 |
979 | if (*s == '=') |
980 | goto doshell; |
748a9306 |
981 | |
a687059c |
982 | for (s = cmd; *s; s++) { |
93a17b20 |
983 | if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) { |
a687059c |
984 | if (*s == '\n' && !s[1]) { |
985 | *s = '\0'; |
986 | break; |
987 | } |
988 | doshell: |
ff68c719 |
989 | execl(sh_path, "sh", "-c", cmd, (char*)0); |
a687059c |
990 | return FALSE; |
991 | } |
992 | } |
748a9306 |
993 | |
ff8e2863 |
994 | New(402,Argv, (s - cmd) / 2 + 2, char*); |
a0d0e21e |
995 | Cmd = savepvn(cmd, s-cmd); |
ff8e2863 |
996 | a = Argv; |
997 | for (s = Cmd; *s;) { |
99b89507 |
998 | while (*s && isSPACE(*s)) s++; |
a687059c |
999 | if (*s) |
1000 | *(a++) = s; |
99b89507 |
1001 | while (*s && !isSPACE(*s)) s++; |
a687059c |
1002 | if (*s) |
1003 | *s++ = '\0'; |
1004 | } |
1005 | *a = Nullch; |
ff8e2863 |
1006 | if (Argv[0]) { |
1007 | execvp(Argv[0],Argv); |
b1248f16 |
1008 | if (errno == ENOEXEC) { /* for system V NIH syndrome */ |
ff8e2863 |
1009 | do_execfree(); |
a687059c |
1010 | goto doshell; |
b1248f16 |
1011 | } |
a0d0e21e |
1012 | if (dowarn) |
1013 | warn("Can't exec \"%s\": %s", Argv[0], Strerror(errno)); |
a687059c |
1014 | } |
ff8e2863 |
1015 | do_execfree(); |
a687059c |
1016 | return FALSE; |
1017 | } |
1018 | |
6890e559 |
1019 | #endif /* OS2 || WIN32 */ |
760ac839 |
1020 | |
79072805 |
1021 | I32 |
8ac85365 |
1022 | apply(I32 type, register SV **mark, register SV **sp) |
a687059c |
1023 | { |
11343788 |
1024 | dTHR; |
79072805 |
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 |
1031 | if (tainting) { |
1032 | while (++mark <= sp) { |
bbce6d69 |
1033 | if (SvTAINTED(*mark)) { |
1034 | TAINT; |
1035 | break; |
1036 | } |
463ee0b2 |
1037 | } |
1038 | mark = oldmark; |
1039 | } |
a687059c |
1040 | switch (type) { |
79072805 |
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 |
1048 | tot--; |
1049 | } |
1050 | } |
1051 | break; |
fe14fcc3 |
1052 | #ifdef HAS_CHOWN |
79072805 |
1053 | case OP_CHOWN: |
1054 | TAINT_PROPER("chown"); |
1055 | if (sp - mark > 2) { |
463ee0b2 |
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 |
1061 | tot--; |
1062 | } |
1063 | } |
1064 | break; |
b1248f16 |
1065 | #endif |
fe14fcc3 |
1066 | #ifdef HAS_KILL |
79072805 |
1067 | case OP_KILL: |
1068 | TAINT_PROPER("kill"); |
55497cff |
1069 | if (mark == sp) |
1070 | break; |
463ee0b2 |
1071 | s = SvPVx(*++mark, na); |
79072805 |
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 |
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 |
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 |
1122 | } |
1123 | else { |
1124 | while (++mark <= sp) { |
463ee0b2 |
1125 | if (kill(SvIVx(*mark),val)) |
79072805 |
1126 | tot--; |
a687059c |
1127 | } |
1128 | } |
1129 | break; |
b1248f16 |
1130 | #endif |
79072805 |
1131 | case OP_UNLINK: |
1132 | TAINT_PROPER("unlink"); |
1133 | tot = sp - mark; |
1134 | while (++mark <= sp) { |
463ee0b2 |
1135 | s = SvPVx(*mark, na); |
a687059c |
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 |
1146 | tot--; |
1147 | else { |
1148 | if (UNLINK(s)) |
1149 | tot--; |
1150 | } |
1151 | } |
1152 | } |
1153 | break; |
a0d0e21e |
1154 | #ifdef HAS_UTIME |
79072805 |
1155 | case OP_UTIME: |
1156 | TAINT_PROPER("utime"); |
1157 | if (sp - mark > 2) { |
748a9306 |
1158 | #if defined(I_UTIME) || defined(VMS) |
663a0e37 |
1159 | struct utimbuf utbuf; |
1160 | #else |
a687059c |
1161 | struct { |
663a0e37 |
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 |
1172 | utbuf.actime = SvIVx(*++mark); /* time accessed */ |
1173 | utbuf.modtime = SvIVx(*++mark); /* time modified */ |
517844ec |
1174 | #endif |
79072805 |
1175 | tot = sp - mark; |
1176 | while (++mark <= sp) { |
463ee0b2 |
1177 | if (utime(SvPVx(*mark, na),&utbuf)) |
a687059c |
1178 | tot--; |
1179 | } |
a687059c |
1180 | } |
1181 | else |
79072805 |
1182 | tot = 0; |
a687059c |
1183 | break; |
a0d0e21e |
1184 | #endif |
a687059c |
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 |
8ac85365 |
1192 | cando(I32 bit, I32 effective, register struct stat *statbufp) |
a687059c |
1193 | { |
bee1dbe2 |
1194 | #ifdef DOSISH |
fe14fcc3 |
1195 | /* [Comments and code from Len Reed] |
1196 | * MS-DOS "user" is similar to UNIX's "superuser," but can't write |
1197 | * to write-protected files. The execute permission bit is set |
1198 | * by the Miscrosoft C library stat() function for the following: |
1199 | * .exe files |
1200 | * .com files |
1201 | * .bat files |
1202 | * directories |
1203 | * All files and directories are readable. |
1204 | * Directories and special files, e.g. "CON", cannot be |
1205 | * write-protected. |
1206 | * [Comment by Tom Dinger -- a directory can have the write-protect |
1207 | * bit set in the file system, but DOS permits changes to |
1208 | * the directory anyway. In addition, all bets are off |
1209 | * here for networked software, such as Novell and |
1210 | * Sun's PC-NFS.] |
1211 | */ |
1212 | |
bee1dbe2 |
1213 | /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat |
1214 | * too so it will actually look into the files for magic numbers |
1215 | */ |
fe14fcc3 |
1216 | return (bit & statbufp->st_mode) ? TRUE : FALSE; |
1217 | |
55497cff |
1218 | #else /* ! DOSISH */ |
a687059c |
1219 | if ((effective ? euid : uid) == 0) { /* root is special */ |
c623bd54 |
1220 | if (bit == S_IXUSR) { |
1221 | if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode)) |
a687059c |
1222 | return TRUE; |
1223 | } |
1224 | else |
1225 | return TRUE; /* root reads and writes anything */ |
1226 | return FALSE; |
1227 | } |
1228 | if (statbufp->st_uid == (effective ? euid : uid) ) { |
1229 | if (statbufp->st_mode & bit) |
1230 | return TRUE; /* ok as "user" */ |
1231 | } |
79072805 |
1232 | else if (ingroup((I32)statbufp->st_gid,effective)) { |
a687059c |
1233 | if (statbufp->st_mode & bit >> 3) |
1234 | return TRUE; /* ok as "group" */ |
1235 | } |
1236 | else if (statbufp->st_mode & bit >> 6) |
1237 | return TRUE; /* ok as "other" */ |
1238 | return FALSE; |
55497cff |
1239 | #endif /* ! DOSISH */ |
a687059c |
1240 | } |
a0d0e21e |
1241 | #endif /* ! VMS */ |
a687059c |
1242 | |
79072805 |
1243 | I32 |
8ac85365 |
1244 | ingroup(I32 testgid, I32 effective) |
a687059c |
1245 | { |
1246 | if (testgid == (effective ? egid : gid)) |
1247 | return TRUE; |
fe14fcc3 |
1248 | #ifdef HAS_GETGROUPS |
a687059c |
1249 | #ifndef NGROUPS |
1250 | #define NGROUPS 32 |
1251 | #endif |
1252 | { |
a0d0e21e |
1253 | Groups_t gary[NGROUPS]; |
79072805 |
1254 | I32 anum; |
a687059c |
1255 | |
1256 | anum = getgroups(NGROUPS,gary); |
1257 | while (--anum >= 0) |
1258 | if (gary[anum] == testgid) |
1259 | return TRUE; |
1260 | } |
1261 | #endif |
1262 | return FALSE; |
1263 | } |
c2ab57d4 |
1264 | |
fe14fcc3 |
1265 | #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM) |
c2ab57d4 |
1266 | |
79072805 |
1267 | I32 |
8ac85365 |
1268 | do_ipcget(I32 optype, SV **mark, SV **sp) |
c2ab57d4 |
1269 | { |
11343788 |
1270 | dTHR; |
c2ab57d4 |
1271 | key_t key; |
79072805 |
1272 | I32 n, flags; |
c2ab57d4 |
1273 | |
463ee0b2 |
1274 | key = (key_t)SvNVx(*++mark); |
1275 | n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark); |
1276 | flags = SvIVx(*++mark); |
748a9306 |
1277 | SETERRNO(0,0); |
c2ab57d4 |
1278 | switch (optype) |
1279 | { |
fe14fcc3 |
1280 | #ifdef HAS_MSG |
79072805 |
1281 | case OP_MSGGET: |
c2ab57d4 |
1282 | return msgget(key, flags); |
e5d73d77 |
1283 | #endif |
fe14fcc3 |
1284 | #ifdef HAS_SEM |
79072805 |
1285 | case OP_SEMGET: |
c2ab57d4 |
1286 | return semget(key, n, flags); |
e5d73d77 |
1287 | #endif |
fe14fcc3 |
1288 | #ifdef HAS_SHM |
79072805 |
1289 | case OP_SHMGET: |
c2ab57d4 |
1290 | return shmget(key, n, flags); |
e5d73d77 |
1291 | #endif |
fe14fcc3 |
1292 | #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
e5d73d77 |
1293 | default: |
c07a80fd |
1294 | croak("%s not implemented", op_desc[optype]); |
e5d73d77 |
1295 | #endif |
c2ab57d4 |
1296 | } |
1297 | return -1; /* should never happen */ |
1298 | } |
1299 | |
79072805 |
1300 | I32 |
8ac85365 |
1301 | do_ipcctl(I32 optype, SV **mark, SV **sp) |
c2ab57d4 |
1302 | { |
11343788 |
1303 | dTHR; |
79072805 |
1304 | SV *astr; |
c2ab57d4 |
1305 | char *a; |
a0d0e21e |
1306 | I32 id, n, cmd, infosize, getinfo; |
1307 | I32 ret = -1; |
3e3baf6d |
1308 | #ifdef __linux__ /* XXX Need metaconfig test */ |
1309 | union semun unsemds; |
1310 | #endif |
c2ab57d4 |
1311 | |
463ee0b2 |
1312 | id = SvIVx(*++mark); |
1313 | n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0; |
1314 | cmd = SvIVx(*++mark); |
79072805 |
1315 | astr = *++mark; |
c2ab57d4 |
1316 | infosize = 0; |
1317 | getinfo = (cmd == IPC_STAT); |
1318 | |
1319 | switch (optype) |
1320 | { |
fe14fcc3 |
1321 | #ifdef HAS_MSG |
79072805 |
1322 | case OP_MSGCTL: |
c2ab57d4 |
1323 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1324 | infosize = sizeof(struct msqid_ds); |
1325 | break; |
e5d73d77 |
1326 | #endif |
fe14fcc3 |
1327 | #ifdef HAS_SHM |
79072805 |
1328 | case OP_SHMCTL: |
c2ab57d4 |
1329 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1330 | infosize = sizeof(struct shmid_ds); |
1331 | break; |
e5d73d77 |
1332 | #endif |
fe14fcc3 |
1333 | #ifdef HAS_SEM |
79072805 |
1334 | case OP_SEMCTL: |
c2ab57d4 |
1335 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1336 | infosize = sizeof(struct semid_ds); |
1337 | else if (cmd == GETALL || cmd == SETALL) |
1338 | { |
8e591e46 |
1339 | struct semid_ds semds; |
3e3baf6d |
1340 | #ifdef __linux__ /* XXX Need metaconfig test */ |
84902520 |
1341 | /* linux (and Solaris2?) uses : |
1342 | int semctl (int semid, int semnum, int cmd, union semun arg) |
3e3baf6d |
1343 | union semun { |
1344 | int val; |
1345 | struct semid_ds *buf; |
1346 | ushort *array; |
1347 | }; |
1348 | */ |
84902520 |
1349 | union semun semun; |
1350 | semun.buf = &semds; |
1351 | if (semctl(id, 0, IPC_STAT, semun) == -1) |
3e3baf6d |
1352 | #else |
c2ab57d4 |
1353 | if (semctl(id, 0, IPC_STAT, &semds) == -1) |
3e3baf6d |
1354 | #endif |
c2ab57d4 |
1355 | return -1; |
1356 | getinfo = (cmd == GETALL); |
6e21c824 |
1357 | infosize = semds.sem_nsems * sizeof(short); |
1358 | /* "short" is technically wrong but much more portable |
1359 | than guessing about u_?short(_t)? */ |
c2ab57d4 |
1360 | } |
1361 | break; |
e5d73d77 |
1362 | #endif |
fe14fcc3 |
1363 | #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
e5d73d77 |
1364 | default: |
c07a80fd |
1365 | croak("%s not implemented", op_desc[optype]); |
e5d73d77 |
1366 | #endif |
c2ab57d4 |
1367 | } |
1368 | |
1369 | if (infosize) |
1370 | { |
a0d0e21e |
1371 | STRLEN len; |
c2ab57d4 |
1372 | if (getinfo) |
1373 | { |
a0d0e21e |
1374 | SvPV_force(astr, len); |
1375 | a = SvGROW(astr, infosize+1); |
c2ab57d4 |
1376 | } |
1377 | else |
1378 | { |
463ee0b2 |
1379 | a = SvPV(astr, len); |
1380 | if (len != infosize) |
9607fc9c |
1381 | croak("Bad arg length for %s, is %lu, should be %ld", |
1382 | op_desc[optype], (unsigned long)len, (long)infosize); |
c2ab57d4 |
1383 | } |
1384 | } |
1385 | else |
1386 | { |
c030ccd9 |
1387 | IV i = SvIV(astr); |
c2ab57d4 |
1388 | a = (char *)i; /* ouch */ |
1389 | } |
748a9306 |
1390 | SETERRNO(0,0); |
c2ab57d4 |
1391 | switch (optype) |
1392 | { |
fe14fcc3 |
1393 | #ifdef HAS_MSG |
79072805 |
1394 | case OP_MSGCTL: |
bee1dbe2 |
1395 | ret = msgctl(id, cmd, (struct msqid_ds *)a); |
c2ab57d4 |
1396 | break; |
e5d73d77 |
1397 | #endif |
fe14fcc3 |
1398 | #ifdef HAS_SEM |
79072805 |
1399 | case OP_SEMCTL: |
3e3baf6d |
1400 | #ifdef __linux__ /* XXX Need metaconfig test */ |
1401 | unsemds.buf = (struct semid_ds *)a; |
1402 | ret = semctl(id, n, cmd, unsemds); |
1403 | #else |
79072805 |
1404 | ret = semctl(id, n, cmd, (struct semid_ds *)a); |
3e3baf6d |
1405 | #endif |
c2ab57d4 |
1406 | break; |
e5d73d77 |
1407 | #endif |
fe14fcc3 |
1408 | #ifdef HAS_SHM |
79072805 |
1409 | case OP_SHMCTL: |
bee1dbe2 |
1410 | ret = shmctl(id, cmd, (struct shmid_ds *)a); |
c2ab57d4 |
1411 | break; |
e5d73d77 |
1412 | #endif |
c2ab57d4 |
1413 | } |
1414 | if (getinfo && ret >= 0) { |
79072805 |
1415 | SvCUR_set(astr, infosize); |
1416 | *SvEND(astr) = '\0'; |
a0d0e21e |
1417 | SvSETMAGIC(astr); |
c2ab57d4 |
1418 | } |
1419 | return ret; |
1420 | } |
1421 | |
79072805 |
1422 | I32 |
8ac85365 |
1423 | do_msgsnd(SV **mark, SV **sp) |
c2ab57d4 |
1424 | { |
fe14fcc3 |
1425 | #ifdef HAS_MSG |
11343788 |
1426 | dTHR; |
79072805 |
1427 | SV *mstr; |
c2ab57d4 |
1428 | char *mbuf; |
79072805 |
1429 | I32 id, msize, flags; |
463ee0b2 |
1430 | STRLEN len; |
c2ab57d4 |
1431 | |
463ee0b2 |
1432 | id = SvIVx(*++mark); |
79072805 |
1433 | mstr = *++mark; |
463ee0b2 |
1434 | flags = SvIVx(*++mark); |
1435 | mbuf = SvPV(mstr, len); |
1436 | if ((msize = len - sizeof(long)) < 0) |
1437 | croak("Arg too short for msgsnd"); |
748a9306 |
1438 | SETERRNO(0,0); |
bee1dbe2 |
1439 | return msgsnd(id, (struct msgbuf *)mbuf, msize, flags); |
e5d73d77 |
1440 | #else |
463ee0b2 |
1441 | croak("msgsnd not implemented"); |
e5d73d77 |
1442 | #endif |
c2ab57d4 |
1443 | } |
1444 | |
79072805 |
1445 | I32 |
8ac85365 |
1446 | do_msgrcv(SV **mark, SV **sp) |
c2ab57d4 |
1447 | { |
fe14fcc3 |
1448 | #ifdef HAS_MSG |
11343788 |
1449 | dTHR; |
79072805 |
1450 | SV *mstr; |
c2ab57d4 |
1451 | char *mbuf; |
1452 | long mtype; |
79072805 |
1453 | I32 id, msize, flags, ret; |
463ee0b2 |
1454 | STRLEN len; |
79072805 |
1455 | |
463ee0b2 |
1456 | id = SvIVx(*++mark); |
79072805 |
1457 | mstr = *++mark; |
463ee0b2 |
1458 | msize = SvIVx(*++mark); |
1459 | mtype = (long)SvIVx(*++mark); |
1460 | flags = SvIVx(*++mark); |
ed6116ce |
1461 | if (SvTHINKFIRST(mstr)) { |
1462 | if (SvREADONLY(mstr)) |
1463 | croak("Can't msgrcv to readonly var"); |
1464 | if (SvROK(mstr)) |
1465 | sv_unref(mstr); |
1466 | } |
a0d0e21e |
1467 | SvPV_force(mstr, len); |
1468 | mbuf = SvGROW(mstr, sizeof(long)+msize+1); |
1469 | |
748a9306 |
1470 | SETERRNO(0,0); |
bee1dbe2 |
1471 | ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags); |
c2ab57d4 |
1472 | if (ret >= 0) { |
79072805 |
1473 | SvCUR_set(mstr, sizeof(long)+ret); |
1474 | *SvEND(mstr) = '\0'; |
c2ab57d4 |
1475 | } |
1476 | return ret; |
e5d73d77 |
1477 | #else |
463ee0b2 |
1478 | croak("msgrcv not implemented"); |
e5d73d77 |
1479 | #endif |
c2ab57d4 |
1480 | } |
1481 | |
79072805 |
1482 | I32 |
8ac85365 |
1483 | do_semop(SV **mark, SV **sp) |
c2ab57d4 |
1484 | { |
fe14fcc3 |
1485 | #ifdef HAS_SEM |
11343788 |
1486 | dTHR; |
79072805 |
1487 | SV *opstr; |
c2ab57d4 |
1488 | char *opbuf; |
463ee0b2 |
1489 | I32 id; |
1490 | STRLEN opsize; |
c2ab57d4 |
1491 | |
463ee0b2 |
1492 | id = SvIVx(*++mark); |
79072805 |
1493 | opstr = *++mark; |
463ee0b2 |
1494 | opbuf = SvPV(opstr, opsize); |
c2ab57d4 |
1495 | if (opsize < sizeof(struct sembuf) |
1496 | || (opsize % sizeof(struct sembuf)) != 0) { |
748a9306 |
1497 | SETERRNO(EINVAL,LIB$_INVARG); |
c2ab57d4 |
1498 | return -1; |
1499 | } |
748a9306 |
1500 | SETERRNO(0,0); |
6e21c824 |
1501 | return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf)); |
e5d73d77 |
1502 | #else |
463ee0b2 |
1503 | croak("semop not implemented"); |
e5d73d77 |
1504 | #endif |
c2ab57d4 |
1505 | } |
1506 | |
79072805 |
1507 | I32 |
8ac85365 |
1508 | do_shmio(I32 optype, SV **mark, SV **sp) |
c2ab57d4 |
1509 | { |
fe14fcc3 |
1510 | #ifdef HAS_SHM |
11343788 |
1511 | dTHR; |
79072805 |
1512 | SV *mstr; |
c2ab57d4 |
1513 | char *mbuf, *shm; |
79072805 |
1514 | I32 id, mpos, msize; |
463ee0b2 |
1515 | STRLEN len; |
c2ab57d4 |
1516 | struct shmid_ds shmds; |
c2ab57d4 |
1517 | |
463ee0b2 |
1518 | id = SvIVx(*++mark); |
79072805 |
1519 | mstr = *++mark; |
463ee0b2 |
1520 | mpos = SvIVx(*++mark); |
1521 | msize = SvIVx(*++mark); |
748a9306 |
1522 | SETERRNO(0,0); |
c2ab57d4 |
1523 | if (shmctl(id, IPC_STAT, &shmds) == -1) |
1524 | return -1; |
1525 | if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) { |
748a9306 |
1526 | SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */ |
c2ab57d4 |
1527 | return -1; |
1528 | } |
8ac85365 |
1529 | shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0); |
c2ab57d4 |
1530 | if (shm == (char *)-1) /* I hate System V IPC, I really do */ |
1531 | return -1; |
79072805 |
1532 | if (optype == OP_SHMREAD) { |
a0d0e21e |
1533 | SvPV_force(mstr, len); |
1534 | mbuf = SvGROW(mstr, msize+1); |
1535 | |
bee1dbe2 |
1536 | Copy(shm + mpos, mbuf, msize, char); |
79072805 |
1537 | SvCUR_set(mstr, msize); |
1538 | *SvEND(mstr) = '\0'; |
a0d0e21e |
1539 | SvSETMAGIC(mstr); |
c2ab57d4 |
1540 | } |
1541 | else { |
79072805 |
1542 | I32 n; |
c2ab57d4 |
1543 | |
a0d0e21e |
1544 | mbuf = SvPV(mstr, len); |
463ee0b2 |
1545 | if ((n = len) > msize) |
c2ab57d4 |
1546 | n = msize; |
bee1dbe2 |
1547 | Copy(mbuf, shm + mpos, n, char); |
c2ab57d4 |
1548 | if (n < msize) |
bee1dbe2 |
1549 | memzero(shm + mpos + n, msize - n); |
c2ab57d4 |
1550 | } |
1551 | return shmdt(shm); |
e5d73d77 |
1552 | #else |
463ee0b2 |
1553 | croak("shm I/O not implemented"); |
e5d73d77 |
1554 | #endif |
c2ab57d4 |
1555 | } |
1556 | |
fe14fcc3 |
1557 | #endif /* SYSV IPC */ |
4e35701f |
1558 | |