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 | |
232e078e AD |
46 | #if defined(HAS_SOCKET) && !defined(VMS) /* VMS handles sockets via vmsish.h */ |
47 | # include <sys/socket.h> | |
48 | # include <netdb.h> | |
49 | # ifndef ENOTSOCK | |
50 | # ifdef I_NET_ERRNO | |
51 | # include <net/errno.h> | |
52 | # endif | |
53 | # endif | |
54 | #endif | |
55 | ||
a687059c | 56 | bool |
c07a80fd | 57 | do_open(gv,name,len,as_raw,rawmode,rawperm,supplied_fp) |
79072805 | 58 | GV *gv; |
a687059c | 59 | register char *name; |
79072805 | 60 | I32 len; |
c07a80fd | 61 | int as_raw; |
62 | int rawmode, rawperm; | |
a0d0e21e | 63 | FILE *supplied_fp; |
a687059c | 64 | { |
a0d0e21e | 65 | register IO *io = GvIOn(gv); |
6e21c824 LW |
66 | FILE *saveifp = Nullfp; |
67 | FILE *saveofp = Nullfp; | |
68 | char savetype = ' '; | |
c07a80fd | 69 | int writing = 0; |
70 | FILE *fp; | |
71 | int fd; | |
72 | int result; | |
a687059c | 73 | |
a687059c | 74 | forkprocess = 1; /* assume true if no fork */ |
c07a80fd | 75 | |
a0d0e21e | 76 | if (IoIFP(io)) { |
8990e307 LW |
77 | fd = fileno(IoIFP(io)); |
78 | if (IoTYPE(io) == '-') | |
c2ab57d4 | 79 | result = 0; |
6e21c824 | 80 | else if (fd <= maxsysfd) { |
8990e307 LW |
81 | saveifp = IoIFP(io); |
82 | saveofp = IoOFP(io); | |
83 | savetype = IoTYPE(io); | |
6e21c824 LW |
84 | result = 0; |
85 | } | |
8990e307 LW |
86 | else if (IoTYPE(io) == '|') |
87 | result = my_pclose(IoIFP(io)); | |
88 | else if (IoIFP(io) != IoOFP(io)) { | |
89 | if (IoOFP(io)) { | |
90 | result = fclose(IoOFP(io)); | |
91 | fclose(IoIFP(io)); /* clear stdio, fd already closed */ | |
c2ab57d4 LW |
92 | } |
93 | else | |
8990e307 | 94 | result = fclose(IoIFP(io)); |
a687059c | 95 | } |
a687059c | 96 | else |
8990e307 | 97 | result = fclose(IoIFP(io)); |
6e21c824 | 98 | if (result == EOF && fd > maxsysfd) |
a687059c | 99 | fprintf(stderr,"Warning: unable to close filehandle %s properly.\n", |
79072805 | 100 | GvENAME(gv)); |
8990e307 | 101 | IoOFP(io) = IoIFP(io) = Nullfp; |
a687059c | 102 | } |
c07a80fd | 103 | |
104 | if (as_raw) { | |
105 | result = rawmode & 3; | |
106 | IoTYPE(io) = "<>++"[result]; | |
107 | writing = (result > 0); | |
108 | fd = open(name, rawmode, rawperm); | |
109 | if (fd == -1) | |
110 | fp = NULL; | |
111 | else { | |
112 | fp = fdopen(fd, ((result == 0) ? "r" | |
113 | : (result == 1) ? "w" | |
114 | : "r+")); | |
115 | if (!fp) | |
116 | close(fd); | |
117 | } | |
a687059c | 118 | } |
c07a80fd | 119 | else { |
120 | char *myname; | |
121 | char mode[3]; /* stdio file mode ("r\0" or "r+\0") */ | |
122 | int dodup; | |
123 | ||
124 | myname = savepvn(name, len); | |
125 | SAVEFREEPV(myname); | |
126 | name = myname; | |
127 | while (len && isSPACE(name[len-1])) | |
128 | name[--len] = '\0'; | |
129 | ||
130 | mode[0] = mode[1] = mode[2] = '\0'; | |
131 | IoTYPE(io) = *name; | |
132 | if (*name == '+' && len > 1 && name[len-1] != '|') { /* scary */ | |
133 | mode[1] = *name++; | |
134 | --len; | |
135 | writing = 1; | |
a687059c | 136 | } |
c07a80fd | 137 | |
138 | if (*name == '|') { | |
139 | /*SUPPRESS 530*/ | |
140 | for (name++; isSPACE(*name); name++) ; | |
141 | if (strNE(name,"-")) | |
142 | TAINT_ENV(); | |
143 | TAINT_PROPER("piped open"); | |
144 | if (dowarn && name[strlen(name)-1] == '|') | |
145 | warn("Can't do bidirectional pipe"); | |
146 | fp = my_popen(name,"w"); | |
147 | writing = 1; | |
148 | } | |
149 | else if (*name == '>') { | |
150 | TAINT_PROPER("open"); | |
bf38876a | 151 | name++; |
c07a80fd | 152 | if (*name == '>') { |
153 | mode[0] = IoTYPE(io) = 'a'; | |
bf38876a | 154 | name++; |
a0d0e21e | 155 | } |
c07a80fd | 156 | else |
157 | mode[0] = 'w'; | |
158 | writing = 1; | |
159 | ||
160 | if (*name == '&') { | |
161 | duplicity: | |
162 | dodup = 1; | |
163 | name++; | |
164 | if (*name == '=') { | |
165 | dodup = 0; | |
a0d0e21e | 166 | name++; |
c07a80fd | 167 | } |
168 | if (!*name && supplied_fp) | |
169 | fp = supplied_fp; | |
a0d0e21e | 170 | else { |
c07a80fd | 171 | /*SUPPRESS 530*/ |
172 | for (; isSPACE(*name); name++) ; | |
173 | if (isDIGIT(*name)) | |
174 | fd = atoi(name); | |
175 | else { | |
176 | IO* thatio; | |
177 | gv = gv_fetchpv(name,FALSE,SVt_PVIO); | |
178 | thatio = GvIO(gv); | |
179 | if (!thatio) { | |
6e21c824 | 180 | #ifdef EINVAL |
c07a80fd | 181 | SETERRNO(EINVAL,SS$_IVCHAN); |
6e21c824 | 182 | #endif |
c07a80fd | 183 | goto say_false; |
184 | } | |
185 | if (IoIFP(thatio)) { | |
186 | fd = fileno(IoIFP(thatio)); | |
187 | if (IoTYPE(thatio) == 's') | |
188 | IoTYPE(io) = 's'; | |
189 | } | |
190 | else | |
191 | fd = -1; | |
a0d0e21e | 192 | } |
fec02dd3 | 193 | if (dodup) |
c07a80fd | 194 | fd = dup(fd); |
517844ec | 195 | if (!(fp = fdopen(fd,mode))) { |
c07a80fd | 196 | if (dodup) |
197 | close(fd); | |
517844ec | 198 | } |
c07a80fd | 199 | } |
bf38876a | 200 | } |
c07a80fd | 201 | else { |
202 | /*SUPPRESS 530*/ | |
203 | for (; isSPACE(*name); name++) ; | |
204 | if (strEQ(name,"-")) { | |
205 | fp = stdout; | |
206 | IoTYPE(io) = '-'; | |
207 | } | |
208 | else { | |
209 | fp = fopen(name,mode); | |
210 | } | |
bf38876a LW |
211 | } |
212 | } | |
c07a80fd | 213 | else if (*name == '<') { |
214 | /*SUPPRESS 530*/ | |
215 | for (name++; isSPACE(*name); name++) ; | |
bf38876a | 216 | mode[0] = 'r'; |
bf38876a LW |
217 | if (*name == '&') |
218 | goto duplicity; | |
a687059c LW |
219 | if (strEQ(name,"-")) { |
220 | fp = stdin; | |
8990e307 | 221 | IoTYPE(io) = '-'; |
a687059c | 222 | } |
bf38876a | 223 | else |
a687059c | 224 | fp = fopen(name,mode); |
a687059c LW |
225 | } |
226 | else if (name[len-1] == '|') { | |
a687059c | 227 | name[--len] = '\0'; |
99b89507 | 228 | while (len && isSPACE(name[len-1])) |
a687059c | 229 | name[--len] = '\0'; |
99b89507 LW |
230 | /*SUPPRESS 530*/ |
231 | for (; isSPACE(*name); name++) ; | |
79072805 LW |
232 | if (strNE(name,"-")) |
233 | TAINT_ENV(); | |
234 | TAINT_PROPER("piped open"); | |
235 | fp = my_popen(name,"r"); | |
8990e307 | 236 | IoTYPE(io) = '|'; |
a687059c LW |
237 | } |
238 | else { | |
8990e307 | 239 | IoTYPE(io) = '<'; |
99b89507 LW |
240 | /*SUPPRESS 530*/ |
241 | for (; isSPACE(*name); name++) ; | |
a687059c LW |
242 | if (strEQ(name,"-")) { |
243 | fp = stdin; | |
8990e307 | 244 | IoTYPE(io) = '-'; |
a687059c LW |
245 | } |
246 | else | |
247 | fp = fopen(name,"r"); | |
248 | } | |
249 | } | |
bee1dbe2 | 250 | if (!fp) { |
8990e307 | 251 | if (dowarn && IoTYPE(io) == '<' && strchr(name, '\n')) |
bee1dbe2 | 252 | warn(warn_nl, "open"); |
6e21c824 | 253 | goto say_false; |
bee1dbe2 | 254 | } |
8990e307 LW |
255 | if (IoTYPE(io) && |
256 | IoTYPE(io) != '|' && IoTYPE(io) != '-') { | |
a0d0e21e | 257 | if (Fstat(fileno(fp),&statbuf) < 0) { |
a687059c | 258 | (void)fclose(fp); |
6e21c824 | 259 | goto say_false; |
a687059c | 260 | } |
1462b684 | 261 | if (S_ISSOCK(statbuf.st_mode)) |
8990e307 | 262 | IoTYPE(io) = 's'; /* in case a socket was passed in to us */ |
99b89507 LW |
263 | #ifdef HAS_SOCKET |
264 | else if ( | |
c623bd54 | 265 | #ifdef S_IFMT |
99b89507 LW |
266 | !(statbuf.st_mode & S_IFMT) |
267 | #else | |
268 | !statbuf.st_mode | |
269 | #endif | |
270 | ) { | |
a0d0e21e LW |
271 | int buflen = sizeof tokenbuf; |
272 | if (getsockname(fileno(fp), (struct sockaddr *)tokenbuf, &buflen) >= 0 | |
bee1dbe2 | 273 | || errno != ENOTSOCK) |
8990e307 | 274 | IoTYPE(io) = 's'; /* some OS's return 0 on fstat()ed socket */ |
99b89507 LW |
275 | /* but some return 0 for streams too, sigh */ |
276 | } | |
bf38876a | 277 | #endif |
a687059c | 278 | } |
6e21c824 LW |
279 | if (saveifp) { /* must use old fp? */ |
280 | fd = fileno(saveifp); | |
281 | if (saveofp) { | |
a5f75d66 | 282 | Fflush(saveofp); /* emulate fclose() */ |
6e21c824 LW |
283 | if (saveofp != saveifp) { /* was a socket? */ |
284 | fclose(saveofp); | |
99b89507 LW |
285 | if (fd > 2) |
286 | Safefree(saveofp); | |
6e21c824 LW |
287 | } |
288 | } | |
289 | if (fd != fileno(fp)) { | |
bee1dbe2 | 290 | int pid; |
79072805 | 291 | SV *sv; |
bee1dbe2 | 292 | |
6e21c824 | 293 | dup2(fileno(fp), fd); |
79072805 | 294 | sv = *av_fetch(fdpid,fileno(fp),TRUE); |
a0d0e21e | 295 | (void)SvUPGRADE(sv, SVt_IV); |
463ee0b2 LW |
296 | pid = SvIVX(sv); |
297 | SvIVX(sv) = 0; | |
79072805 | 298 | sv = *av_fetch(fdpid,fd,TRUE); |
a0d0e21e | 299 | (void)SvUPGRADE(sv, SVt_IV); |
463ee0b2 | 300 | SvIVX(sv) = pid; |
6e21c824 | 301 | fclose(fp); |
bee1dbe2 | 302 | |
6e21c824 LW |
303 | } |
304 | fp = saveifp; | |
bee1dbe2 | 305 | clearerr(fp); |
6e21c824 | 306 | } |
a0d0e21e | 307 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
1462b684 | 308 | fd = fileno(fp); |
a0d0e21e | 309 | fcntl(fd,F_SETFD,fd > maxsysfd); |
1462b684 | 310 | #endif |
8990e307 | 311 | IoIFP(io) = fp; |
bf38876a | 312 | if (writing) { |
8990e307 LW |
313 | if (IoTYPE(io) == 's' |
314 | || (IoTYPE(io) == '>' && S_ISCHR(statbuf.st_mode)) ) { | |
315 | if (!(IoOFP(io) = fdopen(fileno(fp),"w"))) { | |
fe14fcc3 | 316 | fclose(fp); |
8990e307 | 317 | IoIFP(io) = Nullfp; |
6e21c824 | 318 | goto say_false; |
fe14fcc3 | 319 | } |
1462b684 LW |
320 | } |
321 | else | |
8990e307 | 322 | IoOFP(io) = fp; |
bf38876a | 323 | } |
a687059c | 324 | return TRUE; |
6e21c824 LW |
325 | |
326 | say_false: | |
8990e307 LW |
327 | IoIFP(io) = saveifp; |
328 | IoOFP(io) = saveofp; | |
329 | IoTYPE(io) = savetype; | |
6e21c824 | 330 | return FALSE; |
a687059c LW |
331 | } |
332 | ||
333 | FILE * | |
79072805 LW |
334 | nextargv(gv) |
335 | register GV *gv; | |
a687059c | 336 | { |
79072805 | 337 | register SV *sv; |
99b89507 | 338 | #ifndef FLEXFILENAMES |
c623bd54 LW |
339 | int filedev; |
340 | int fileino; | |
99b89507 | 341 | #endif |
c623bd54 LW |
342 | int fileuid; |
343 | int filegid; | |
fe14fcc3 | 344 | |
79072805 | 345 | if (!argvoutgv) |
85e6fe83 | 346 | argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO); |
fe14fcc3 | 347 | if (filemode & (S_ISUID|S_ISGID)) { |
a5f75d66 | 348 | Fflush(IoIFP(GvIOn(argvoutgv))); /* chmod must follow last write */ |
fe14fcc3 LW |
349 | #ifdef HAS_FCHMOD |
350 | (void)fchmod(lastfd,filemode); | |
351 | #else | |
352 | (void)chmod(oldname,filemode); | |
353 | #endif | |
354 | } | |
355 | filemode = 0; | |
79072805 | 356 | while (av_len(GvAV(gv)) >= 0) { |
463ee0b2 | 357 | STRLEN len; |
79072805 | 358 | sv = av_shift(GvAV(gv)); |
8990e307 | 359 | SAVEFREESV(sv); |
79072805 LW |
360 | sv_setsv(GvSV(gv),sv); |
361 | SvSETMAGIC(GvSV(gv)); | |
463ee0b2 | 362 | oldname = SvPVx(GvSV(gv), len); |
c07a80fd | 363 | if (do_open(gv,oldname,len,FALSE,0,0,Nullfp)) { |
a687059c | 364 | if (inplace) { |
79072805 | 365 | TAINT_PROPER("inplace open"); |
c623bd54 | 366 | if (strEQ(oldname,"-")) { |
4633a7c4 | 367 | setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO)); |
a0d0e21e | 368 | return IoIFP(GvIOp(gv)); |
c623bd54 | 369 | } |
99b89507 | 370 | #ifndef FLEXFILENAMES |
c623bd54 LW |
371 | filedev = statbuf.st_dev; |
372 | fileino = statbuf.st_ino; | |
99b89507 | 373 | #endif |
a687059c LW |
374 | filemode = statbuf.st_mode; |
375 | fileuid = statbuf.st_uid; | |
376 | filegid = statbuf.st_gid; | |
c623bd54 LW |
377 | if (!S_ISREG(filemode)) { |
378 | warn("Can't do inplace edit: %s is not a regular file", | |
379 | oldname ); | |
79072805 | 380 | do_close(gv,FALSE); |
c623bd54 LW |
381 | continue; |
382 | } | |
a687059c | 383 | if (*inplace) { |
ff8e2863 | 384 | #ifdef SUFFIX |
79072805 | 385 | add_suffix(sv,inplace); |
ff8e2863 | 386 | #else |
79072805 | 387 | sv_catpv(sv,inplace); |
ff8e2863 | 388 | #endif |
c623bd54 | 389 | #ifndef FLEXFILENAMES |
a0d0e21e | 390 | if (Stat(SvPVX(sv),&statbuf) >= 0 |
c623bd54 LW |
391 | && statbuf.st_dev == filedev |
392 | && statbuf.st_ino == fileino ) { | |
393 | warn("Can't do inplace edit: %s > 14 characters", | |
463ee0b2 | 394 | SvPVX(sv) ); |
79072805 | 395 | do_close(gv,FALSE); |
c623bd54 LW |
396 | continue; |
397 | } | |
398 | #endif | |
fe14fcc3 | 399 | #ifdef HAS_RENAME |
bee1dbe2 | 400 | #ifndef DOSISH |
463ee0b2 | 401 | if (rename(oldname,SvPVX(sv)) < 0) { |
c623bd54 | 402 | warn("Can't rename %s to %s: %s, skipping file", |
2304df62 | 403 | oldname, SvPVX(sv), Strerror(errno) ); |
79072805 | 404 | do_close(gv,FALSE); |
c623bd54 LW |
405 | continue; |
406 | } | |
a687059c | 407 | #else |
79072805 | 408 | do_close(gv,FALSE); |
463ee0b2 LW |
409 | (void)unlink(SvPVX(sv)); |
410 | (void)rename(oldname,SvPVX(sv)); | |
1193dd27 | 411 | do_open(gv,SvPVX(sv),SvCUR(sv),FALSE,0,0,Nullfp); |
ff8e2863 LW |
412 | #endif /* MSDOS */ |
413 | #else | |
463ee0b2 LW |
414 | (void)UNLINK(SvPVX(sv)); |
415 | if (link(oldname,SvPVX(sv)) < 0) { | |
c623bd54 | 416 | warn("Can't rename %s to %s: %s, skipping file", |
2304df62 | 417 | oldname, SvPVX(sv), Strerror(errno) ); |
79072805 | 418 | do_close(gv,FALSE); |
c623bd54 LW |
419 | continue; |
420 | } | |
a687059c LW |
421 | (void)UNLINK(oldname); |
422 | #endif | |
423 | } | |
424 | else { | |
bee1dbe2 | 425 | #ifndef DOSISH |
fe14fcc3 LW |
426 | if (UNLINK(oldname) < 0) { |
427 | warn("Can't rename %s to %s: %s, skipping file", | |
2304df62 | 428 | oldname, SvPVX(sv), Strerror(errno) ); |
79072805 | 429 | do_close(gv,FALSE); |
fe14fcc3 LW |
430 | continue; |
431 | } | |
ff8e2863 | 432 | #else |
463ee0b2 | 433 | croak("Can't do inplace edit without backup"); |
ff8e2863 | 434 | #endif |
a687059c LW |
435 | } |
436 | ||
79072805 LW |
437 | sv_setpvn(sv,">",1); |
438 | sv_catpv(sv,oldname); | |
748a9306 | 439 | SETERRNO(0,0); /* in case sprintf set errno */ |
c07a80fd | 440 | if (!do_open(argvoutgv,SvPVX(sv),SvCUR(sv),FALSE,0,0,Nullfp)) { |
c623bd54 | 441 | warn("Can't do inplace edit on %s: %s", |
2304df62 | 442 | oldname, Strerror(errno) ); |
79072805 | 443 | do_close(gv,FALSE); |
fe14fcc3 LW |
444 | continue; |
445 | } | |
4633a7c4 | 446 | setdefout(argvoutgv); |
a0d0e21e LW |
447 | lastfd = fileno(IoIFP(GvIOp(argvoutgv))); |
448 | (void)Fstat(lastfd,&statbuf); | |
fe14fcc3 LW |
449 | #ifdef HAS_FCHMOD |
450 | (void)fchmod(lastfd,filemode); | |
a687059c LW |
451 | #else |
452 | (void)chmod(oldname,filemode); | |
453 | #endif | |
fe14fcc3 LW |
454 | if (fileuid != statbuf.st_uid || filegid != statbuf.st_gid) { |
455 | #ifdef HAS_FCHOWN | |
456 | (void)fchown(lastfd,fileuid,filegid); | |
a687059c | 457 | #else |
fe14fcc3 LW |
458 | #ifdef HAS_CHOWN |
459 | (void)chown(oldname,fileuid,filegid); | |
a687059c | 460 | #endif |
b1248f16 | 461 | #endif |
fe14fcc3 | 462 | } |
a687059c | 463 | } |
a0d0e21e | 464 | return IoIFP(GvIOp(gv)); |
a687059c LW |
465 | } |
466 | else | |
2304df62 | 467 | fprintf(stderr,"Can't open %s: %s\n",SvPV(sv, na), Strerror(errno)); |
a687059c LW |
468 | } |
469 | if (inplace) { | |
79072805 | 470 | (void)do_close(argvoutgv,FALSE); |
4633a7c4 | 471 | setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO)); |
a687059c LW |
472 | } |
473 | return Nullfp; | |
474 | } | |
475 | ||
fe14fcc3 | 476 | #ifdef HAS_PIPE |
afd9f252 | 477 | void |
79072805 LW |
478 | do_pipe(sv, rgv, wgv) |
479 | SV *sv; | |
480 | GV *rgv; | |
481 | GV *wgv; | |
afd9f252 | 482 | { |
79072805 LW |
483 | register IO *rstio; |
484 | register IO *wstio; | |
afd9f252 LW |
485 | int fd[2]; |
486 | ||
79072805 | 487 | if (!rgv) |
afd9f252 | 488 | goto badexit; |
79072805 | 489 | if (!wgv) |
afd9f252 LW |
490 | goto badexit; |
491 | ||
a0d0e21e LW |
492 | rstio = GvIOn(rgv); |
493 | wstio = GvIOn(wgv); | |
afd9f252 | 494 | |
a0d0e21e | 495 | if (IoIFP(rstio)) |
79072805 | 496 | do_close(rgv,FALSE); |
a0d0e21e | 497 | if (IoIFP(wstio)) |
79072805 | 498 | do_close(wgv,FALSE); |
afd9f252 LW |
499 | |
500 | if (pipe(fd) < 0) | |
501 | goto badexit; | |
8990e307 LW |
502 | IoIFP(rstio) = fdopen(fd[0], "r"); |
503 | IoOFP(wstio) = fdopen(fd[1], "w"); | |
504 | IoIFP(wstio) = IoOFP(wstio); | |
505 | IoTYPE(rstio) = '<'; | |
506 | IoTYPE(wstio) = '>'; | |
507 | if (!IoIFP(rstio) || !IoOFP(wstio)) { | |
508 | if (IoIFP(rstio)) fclose(IoIFP(rstio)); | |
fe14fcc3 | 509 | else close(fd[0]); |
8990e307 | 510 | if (IoOFP(wstio)) fclose(IoOFP(wstio)); |
fe14fcc3 LW |
511 | else close(fd[1]); |
512 | goto badexit; | |
513 | } | |
afd9f252 | 514 | |
79072805 | 515 | sv_setsv(sv,&sv_yes); |
afd9f252 LW |
516 | return; |
517 | ||
518 | badexit: | |
79072805 | 519 | sv_setsv(sv,&sv_undef); |
afd9f252 LW |
520 | return; |
521 | } | |
b1248f16 | 522 | #endif |
afd9f252 | 523 | |
517844ec | 524 | /* explicit renamed to avoid C++ conflict -- kja */ |
a687059c | 525 | bool |
a0d0e21e | 526 | #ifndef CAN_PROTOTYPE |
517844ec | 527 | do_close(gv,not_implicit) |
79072805 | 528 | GV *gv; |
517844ec | 529 | bool not_implicit; |
8990e307 | 530 | #else |
517844ec | 531 | do_close(GV *gv, bool not_implicit) |
a0d0e21e | 532 | #endif /* CAN_PROTOTYPE */ |
a687059c | 533 | { |
1193dd27 IZ |
534 | bool retval; |
535 | IO *io; | |
a687059c | 536 | |
79072805 LW |
537 | if (!gv) |
538 | gv = argvgv; | |
a0d0e21e | 539 | if (!gv || SvTYPE(gv) != SVt_PVGV) { |
748a9306 | 540 | SETERRNO(EBADF,SS$_IVCHAN); |
c2ab57d4 | 541 | return FALSE; |
99b89507 | 542 | } |
79072805 LW |
543 | io = GvIO(gv); |
544 | if (!io) { /* never opened */ | |
517844ec | 545 | if (dowarn && not_implicit) |
79072805 | 546 | warn("Close on unopened file <%s>",GvENAME(gv)); |
a687059c LW |
547 | return FALSE; |
548 | } | |
1193dd27 | 549 | retval = io_close(io); |
517844ec | 550 | if (not_implicit) { |
1193dd27 IZ |
551 | IoLINES(io) = 0; |
552 | IoPAGE(io) = 0; | |
553 | IoLINES_LEFT(io) = IoPAGE_LEN(io); | |
554 | } | |
555 | IoTYPE(io) = ' '; | |
556 | return retval; | |
557 | } | |
558 | ||
559 | bool | |
560 | io_close(io) | |
561 | IO* io; | |
562 | { | |
563 | bool retval = FALSE; | |
564 | int status; | |
565 | ||
8990e307 LW |
566 | if (IoIFP(io)) { |
567 | if (IoTYPE(io) == '|') { | |
568 | status = my_pclose(IoIFP(io)); | |
c623bd54 | 569 | retval = (status == 0); |
748a9306 | 570 | statusvalue = FIXSTATUS(status); |
a687059c | 571 | } |
8990e307 | 572 | else if (IoTYPE(io) == '-') |
a687059c LW |
573 | retval = TRUE; |
574 | else { | |
8990e307 LW |
575 | if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */ |
576 | retval = (fclose(IoOFP(io)) != EOF); | |
577 | fclose(IoIFP(io)); /* clear stdio, fd already closed */ | |
c2ab57d4 LW |
578 | } |
579 | else | |
8990e307 | 580 | retval = (fclose(IoIFP(io)) != EOF); |
a687059c | 581 | } |
8990e307 | 582 | IoOFP(io) = IoIFP(io) = Nullfp; |
79072805 | 583 | } |
1193dd27 | 584 | |
a687059c LW |
585 | return retval; |
586 | } | |
587 | ||
588 | bool | |
79072805 LW |
589 | do_eof(gv) |
590 | GV *gv; | |
a687059c | 591 | { |
79072805 | 592 | register IO *io; |
a687059c LW |
593 | int ch; |
594 | ||
79072805 | 595 | io = GvIO(gv); |
a687059c | 596 | |
79072805 | 597 | if (!io) |
a687059c LW |
598 | return TRUE; |
599 | ||
8990e307 | 600 | while (IoIFP(io)) { |
a687059c | 601 | |
16d20bd9 AD |
602 | #ifdef USE_STDIO_PTR /* (the code works without this) */ |
603 | if (FILE_cnt(IoIFP(io)) > 0) /* cheat a little, since */ | |
a687059c LW |
604 | return FALSE; /* this is the most usual case */ |
605 | #endif | |
606 | ||
8990e307 | 607 | ch = getc(IoIFP(io)); |
a687059c | 608 | if (ch != EOF) { |
8990e307 | 609 | (void)ungetc(ch, IoIFP(io)); |
a687059c LW |
610 | return FALSE; |
611 | } | |
c2960299 | 612 | #if defined(USE_STDIO_PTR) && defined(STDIO_CNT_LVALUE) |
16d20bd9 AD |
613 | if (FILE_cnt(IoIFP(io)) < -1) |
614 | FILE_cnt(IoIFP(io)) = -1; | |
fe14fcc3 | 615 | #endif |
8990e307 | 616 | if (op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */ |
79072805 | 617 | if (!nextargv(argvgv)) /* get another fp handy */ |
a687059c LW |
618 | return TRUE; |
619 | } | |
620 | else | |
621 | return TRUE; /* normal fp, definitely end of file */ | |
622 | } | |
623 | return TRUE; | |
624 | } | |
625 | ||
626 | long | |
79072805 LW |
627 | do_tell(gv) |
628 | GV *gv; | |
a687059c | 629 | { |
79072805 | 630 | register IO *io; |
a687059c | 631 | |
79072805 | 632 | if (!gv) |
a687059c LW |
633 | goto phooey; |
634 | ||
79072805 | 635 | io = GvIO(gv); |
8990e307 | 636 | if (!io || !IoIFP(io)) |
a687059c LW |
637 | goto phooey; |
638 | ||
bee1dbe2 | 639 | #ifdef ULTRIX_STDIO_BOTCH |
8990e307 LW |
640 | if (feof(IoIFP(io))) |
641 | (void)fseek (IoIFP(io), 0L, 2); /* ultrix 1.2 workaround */ | |
bee1dbe2 | 642 | #endif |
a687059c | 643 | |
8990e307 | 644 | return ftell(IoIFP(io)); |
a687059c LW |
645 | |
646 | phooey: | |
647 | if (dowarn) | |
648 | warn("tell() on unopened file"); | |
748a9306 | 649 | SETERRNO(EBADF,RMS$_IFI); |
a687059c LW |
650 | return -1L; |
651 | } | |
652 | ||
653 | bool | |
79072805 LW |
654 | do_seek(gv, pos, whence) |
655 | GV *gv; | |
a687059c LW |
656 | long pos; |
657 | int whence; | |
658 | { | |
79072805 | 659 | register IO *io; |
a687059c | 660 | |
79072805 | 661 | if (!gv) |
a687059c LW |
662 | goto nuts; |
663 | ||
79072805 | 664 | io = GvIO(gv); |
8990e307 | 665 | if (!io || !IoIFP(io)) |
a687059c LW |
666 | goto nuts; |
667 | ||
bee1dbe2 | 668 | #ifdef ULTRIX_STDIO_BOTCH |
8990e307 LW |
669 | if (feof(IoIFP(io))) |
670 | (void)fseek (IoIFP(io), 0L, 2); /* ultrix 1.2 workaround */ | |
bee1dbe2 | 671 | #endif |
a687059c | 672 | |
8990e307 | 673 | return fseek(IoIFP(io), pos, whence) >= 0; |
a687059c LW |
674 | |
675 | nuts: | |
676 | if (dowarn) | |
677 | warn("seek() on unopened file"); | |
748a9306 | 678 | SETERRNO(EBADF,RMS$_IFI); |
a687059c LW |
679 | return FALSE; |
680 | } | |
681 | ||
a0d0e21e | 682 | #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP) |
c2ab57d4 | 683 | /* code courtesy of William Kucharski */ |
fe14fcc3 | 684 | #define HAS_CHSIZE |
6eb13c3b | 685 | |
517844ec | 686 | I32 my_chsize(fd, length) |
79072805 | 687 | I32 fd; /* file descriptor */ |
85e6fe83 | 688 | Off_t length; /* length to set file to */ |
6eb13c3b LW |
689 | { |
690 | extern long lseek(); | |
691 | struct flock fl; | |
692 | struct stat filebuf; | |
693 | ||
a0d0e21e | 694 | if (Fstat(fd, &filebuf) < 0) |
6eb13c3b LW |
695 | return -1; |
696 | ||
697 | if (filebuf.st_size < length) { | |
698 | ||
699 | /* extend file length */ | |
700 | ||
701 | if ((lseek(fd, (length - 1), 0)) < 0) | |
702 | return -1; | |
703 | ||
704 | /* write a "0" byte */ | |
705 | ||
706 | if ((write(fd, "", 1)) != 1) | |
707 | return -1; | |
708 | } | |
709 | else { | |
710 | /* truncate length */ | |
711 | ||
712 | fl.l_whence = 0; | |
713 | fl.l_len = 0; | |
714 | fl.l_start = length; | |
a0d0e21e | 715 | fl.l_type = F_WRLCK; /* write lock on file space */ |
6eb13c3b LW |
716 | |
717 | /* | |
a0d0e21e | 718 | * This relies on the UNDOCUMENTED F_FREESP argument to |
6eb13c3b LW |
719 | * fcntl(2), which truncates the file so that it ends at the |
720 | * position indicated by fl.l_start. | |
721 | * | |
722 | * Will minor miracles never cease? | |
723 | */ | |
724 | ||
a0d0e21e | 725 | if (fcntl(fd, F_FREESP, &fl) < 0) |
6eb13c3b LW |
726 | return -1; |
727 | ||
728 | } | |
729 | ||
730 | return 0; | |
731 | } | |
a0d0e21e | 732 | #endif /* F_FREESP */ |
ff8e2863 | 733 | |
79072805 LW |
734 | I32 |
735 | looks_like_number(sv) | |
736 | SV *sv; | |
a687059c LW |
737 | { |
738 | register char *s; | |
739 | register char *send; | |
740 | ||
463ee0b2 LW |
741 | if (!SvPOK(sv)) { |
742 | STRLEN len; | |
743 | if (!SvPOKp(sv)) | |
744 | return TRUE; | |
745 | s = SvPV(sv, len); | |
746 | send = s + len; | |
747 | } | |
748 | else { | |
749 | s = SvPVX(sv); | |
750 | send = s + SvCUR(sv); | |
751 | } | |
99b89507 | 752 | while (isSPACE(*s)) |
a687059c LW |
753 | s++; |
754 | if (s >= send) | |
755 | return FALSE; | |
756 | if (*s == '+' || *s == '-') | |
757 | s++; | |
99b89507 | 758 | while (isDIGIT(*s)) |
a687059c LW |
759 | s++; |
760 | if (s == send) | |
761 | return TRUE; | |
762 | if (*s == '.') | |
763 | s++; | |
463ee0b2 | 764 | else if (s == SvPVX(sv)) |
a687059c | 765 | return FALSE; |
99b89507 | 766 | while (isDIGIT(*s)) |
a687059c LW |
767 | s++; |
768 | if (s == send) | |
769 | return TRUE; | |
770 | if (*s == 'e' || *s == 'E') { | |
771 | s++; | |
772 | if (*s == '+' || *s == '-') | |
773 | s++; | |
99b89507 | 774 | while (isDIGIT(*s)) |
a687059c LW |
775 | s++; |
776 | } | |
99b89507 | 777 | while (isSPACE(*s)) |
a687059c LW |
778 | s++; |
779 | if (s >= send) | |
780 | return TRUE; | |
781 | return FALSE; | |
782 | } | |
783 | ||
784 | bool | |
79072805 LW |
785 | do_print(sv,fp) |
786 | register SV *sv; | |
a687059c LW |
787 | FILE *fp; |
788 | { | |
789 | register char *tmps; | |
463ee0b2 | 790 | STRLEN len; |
a687059c | 791 | |
79072805 LW |
792 | /* assuming fp is checked earlier */ |
793 | if (!sv) | |
794 | return TRUE; | |
795 | if (ofmt) { | |
8990e307 | 796 | if (SvGMAGICAL(sv)) |
79072805 | 797 | mg_get(sv); |
463ee0b2 LW |
798 | if (SvIOK(sv) && SvIVX(sv) != 0) { |
799 | fprintf(fp, ofmt, (double)SvIVX(sv)); | |
79072805 LW |
800 | return !ferror(fp); |
801 | } | |
463ee0b2 | 802 | if ( (SvNOK(sv) && SvNVX(sv) != 0.0) |
79072805 | 803 | || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) { |
463ee0b2 | 804 | fprintf(fp, ofmt, SvNVX(sv)); |
79072805 LW |
805 | return !ferror(fp); |
806 | } | |
a687059c | 807 | } |
79072805 LW |
808 | switch (SvTYPE(sv)) { |
809 | case SVt_NULL: | |
8990e307 LW |
810 | if (dowarn) |
811 | warn(warn_uninit); | |
ff8e2863 | 812 | return TRUE; |
79072805 | 813 | case SVt_IV: |
a0d0e21e LW |
814 | if (SvIOK(sv)) { |
815 | if (SvGMAGICAL(sv)) | |
816 | mg_get(sv); | |
817 | fprintf(fp, "%ld", (long)SvIVX(sv)); | |
818 | return !ferror(fp); | |
819 | } | |
820 | /* FALL THROUGH */ | |
79072805 | 821 | default: |
463ee0b2 | 822 | tmps = SvPV(sv, len); |
79072805 | 823 | break; |
ff8e2863 | 824 | } |
a0d0e21e | 825 | if (len && (fwrite1(tmps,1,len,fp) == 0 || ferror(fp))) |
a687059c | 826 | return FALSE; |
79072805 | 827 | return TRUE; |
a687059c LW |
828 | } |
829 | ||
79072805 LW |
830 | I32 |
831 | my_stat(ARGS) | |
832 | dARGS | |
a687059c | 833 | { |
79072805 LW |
834 | dSP; |
835 | IO *io; | |
748a9306 | 836 | GV* tmpgv; |
79072805 | 837 | |
a0d0e21e | 838 | if (op->op_flags & OPf_REF) { |
79072805 | 839 | EXTEND(sp,1); |
748a9306 LW |
840 | tmpgv = cGVOP->op_gv; |
841 | do_fstat: | |
842 | io = GvIO(tmpgv); | |
8990e307 | 843 | if (io && IoIFP(io)) { |
748a9306 | 844 | statgv = tmpgv; |
79072805 LW |
845 | sv_setpv(statname,""); |
846 | laststype = OP_STAT; | |
a0d0e21e | 847 | return (laststatval = Fstat(fileno(IoIFP(io)), &statcache)); |
a687059c LW |
848 | } |
849 | else { | |
748a9306 | 850 | if (tmpgv == defgv) |
57ebbfd0 | 851 | return laststatval; |
a687059c LW |
852 | if (dowarn) |
853 | warn("Stat on unopened file <%s>", | |
748a9306 | 854 | GvENAME(tmpgv)); |
79072805 LW |
855 | statgv = Nullgv; |
856 | sv_setpv(statname,""); | |
57ebbfd0 | 857 | return (laststatval = -1); |
a687059c LW |
858 | } |
859 | } | |
860 | else { | |
748a9306 | 861 | SV* sv = POPs; |
79072805 | 862 | PUTBACK; |
748a9306 LW |
863 | if (SvTYPE(sv) == SVt_PVGV) { |
864 | tmpgv = (GV*)sv; | |
865 | goto do_fstat; | |
866 | } | |
867 | else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) { | |
868 | tmpgv = (GV*)SvRV(sv); | |
869 | goto do_fstat; | |
870 | } | |
871 | ||
79072805 | 872 | statgv = Nullgv; |
463ee0b2 | 873 | sv_setpv(statname,SvPV(sv, na)); |
79072805 | 874 | laststype = OP_STAT; |
a0d0e21e | 875 | laststatval = Stat(SvPV(sv, na),&statcache); |
463ee0b2 | 876 | if (laststatval < 0 && dowarn && strchr(SvPV(sv, na), '\n')) |
bee1dbe2 LW |
877 | warn(warn_nl, "stat"); |
878 | return laststatval; | |
a687059c LW |
879 | } |
880 | } | |
881 | ||
79072805 LW |
882 | I32 |
883 | my_lstat(ARGS) | |
884 | dARGS | |
c623bd54 | 885 | { |
79072805 LW |
886 | dSP; |
887 | SV *sv; | |
a0d0e21e | 888 | if (op->op_flags & OPf_REF) { |
79072805 LW |
889 | EXTEND(sp,1); |
890 | if (cGVOP->op_gv == defgv) { | |
891 | if (laststype != OP_LSTAT) | |
463ee0b2 | 892 | croak("The stat preceding -l _ wasn't an lstat"); |
fe14fcc3 LW |
893 | return laststatval; |
894 | } | |
463ee0b2 | 895 | croak("You can't use -l on a filehandle"); |
fe14fcc3 | 896 | } |
c623bd54 | 897 | |
79072805 LW |
898 | laststype = OP_LSTAT; |
899 | statgv = Nullgv; | |
900 | sv = POPs; | |
901 | PUTBACK; | |
463ee0b2 | 902 | sv_setpv(statname,SvPV(sv, na)); |
fe14fcc3 | 903 | #ifdef HAS_LSTAT |
463ee0b2 | 904 | laststatval = lstat(SvPV(sv, na),&statcache); |
c623bd54 | 905 | #else |
a0d0e21e | 906 | laststatval = Stat(SvPV(sv, na),&statcache); |
c623bd54 | 907 | #endif |
463ee0b2 | 908 | if (laststatval < 0 && dowarn && strchr(SvPV(sv, na), '\n')) |
bee1dbe2 LW |
909 | warn(warn_nl, "lstat"); |
910 | return laststatval; | |
c623bd54 LW |
911 | } |
912 | ||
a687059c | 913 | bool |
79072805 LW |
914 | do_aexec(really,mark,sp) |
915 | SV *really; | |
916 | register SV **mark; | |
917 | register SV **sp; | |
a687059c | 918 | { |
a687059c | 919 | register char **a; |
a687059c LW |
920 | char *tmps; |
921 | ||
79072805 LW |
922 | if (sp > mark) { |
923 | New(401,Argv, sp - mark + 1, char*); | |
bee1dbe2 | 924 | a = Argv; |
79072805 LW |
925 | while (++mark <= sp) { |
926 | if (*mark) | |
463ee0b2 | 927 | *a++ = SvPVx(*mark, na); |
a687059c LW |
928 | else |
929 | *a++ = ""; | |
930 | } | |
931 | *a = Nullch; | |
bee1dbe2 | 932 | if (*Argv[0] != '/') /* will execvp use PATH? */ |
79072805 | 933 | TAINT_ENV(); /* testing IFS here is overkill, probably */ |
463ee0b2 | 934 | if (really && *(tmps = SvPV(really, na))) |
bee1dbe2 | 935 | execvp(tmps,Argv); |
a687059c | 936 | else |
bee1dbe2 | 937 | execvp(Argv[0],Argv); |
a0d0e21e LW |
938 | if (dowarn) |
939 | warn("Can't exec \"%s\": %s", Argv[0], Strerror(errno)); | |
a687059c | 940 | } |
bee1dbe2 | 941 | do_execfree(); |
a687059c LW |
942 | return FALSE; |
943 | } | |
944 | ||
fe14fcc3 | 945 | void |
ff8e2863 LW |
946 | do_execfree() |
947 | { | |
948 | if (Argv) { | |
949 | Safefree(Argv); | |
950 | Argv = Null(char **); | |
951 | } | |
952 | if (Cmd) { | |
953 | Safefree(Cmd); | |
954 | Cmd = Nullch; | |
955 | } | |
956 | } | |
957 | ||
a687059c LW |
958 | bool |
959 | do_exec(cmd) | |
960 | char *cmd; | |
961 | { | |
962 | register char **a; | |
963 | register char *s; | |
a687059c LW |
964 | char flags[10]; |
965 | ||
748a9306 LW |
966 | while (*cmd && isSPACE(*cmd)) |
967 | cmd++; | |
968 | ||
a687059c LW |
969 | /* save an extra exec if possible */ |
970 | ||
bf38876a LW |
971 | #ifdef CSH |
972 | if (strnEQ(cmd,cshname,cshlen) && strnEQ(cmd+cshlen," -c",3)) { | |
a687059c | 973 | strcpy(flags,"-c"); |
bf38876a | 974 | s = cmd+cshlen+3; |
a687059c LW |
975 | if (*s == 'f') { |
976 | s++; | |
977 | strcat(flags,"f"); | |
978 | } | |
979 | if (*s == ' ') | |
980 | s++; | |
981 | if (*s++ == '\'') { | |
982 | char *ncmd = s; | |
983 | ||
984 | while (*s) | |
985 | s++; | |
986 | if (s[-1] == '\n') | |
987 | *--s = '\0'; | |
988 | if (s[-1] == '\'') { | |
989 | *--s = '\0'; | |
bf38876a | 990 | execl(cshname,"csh", flags,ncmd,(char*)0); |
a687059c LW |
991 | *s = '\''; |
992 | return FALSE; | |
993 | } | |
994 | } | |
995 | } | |
bf38876a | 996 | #endif /* CSH */ |
a687059c LW |
997 | |
998 | /* see if there are shell metacharacters in it */ | |
999 | ||
748a9306 LW |
1000 | if (*cmd == '.' && isSPACE(cmd[1])) |
1001 | goto doshell; | |
1002 | ||
1003 | if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4])) | |
1004 | goto doshell; | |
1005 | ||
99b89507 | 1006 | for (s = cmd; *s && isALPHA(*s); s++) ; /* catch VAR=val gizmo */ |
63f2c1e1 LW |
1007 | if (*s == '=') |
1008 | goto doshell; | |
748a9306 | 1009 | |
a687059c | 1010 | for (s = cmd; *s; s++) { |
93a17b20 | 1011 | if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) { |
a687059c LW |
1012 | if (*s == '\n' && !s[1]) { |
1013 | *s = '\0'; | |
1014 | break; | |
1015 | } | |
1016 | doshell: | |
517844ec | 1017 | execl(SH_PATH, "sh", "-c", cmd, (char*)0); |
a687059c LW |
1018 | return FALSE; |
1019 | } | |
1020 | } | |
748a9306 | 1021 | |
ff8e2863 | 1022 | New(402,Argv, (s - cmd) / 2 + 2, char*); |
a0d0e21e | 1023 | Cmd = savepvn(cmd, s-cmd); |
ff8e2863 LW |
1024 | a = Argv; |
1025 | for (s = Cmd; *s;) { | |
99b89507 | 1026 | while (*s && isSPACE(*s)) s++; |
a687059c LW |
1027 | if (*s) |
1028 | *(a++) = s; | |
99b89507 | 1029 | while (*s && !isSPACE(*s)) s++; |
a687059c LW |
1030 | if (*s) |
1031 | *s++ = '\0'; | |
1032 | } | |
1033 | *a = Nullch; | |
ff8e2863 LW |
1034 | if (Argv[0]) { |
1035 | execvp(Argv[0],Argv); | |
b1248f16 | 1036 | if (errno == ENOEXEC) { /* for system V NIH syndrome */ |
ff8e2863 | 1037 | do_execfree(); |
a687059c | 1038 | goto doshell; |
b1248f16 | 1039 | } |
a0d0e21e LW |
1040 | if (dowarn) |
1041 | warn("Can't exec \"%s\": %s", Argv[0], Strerror(errno)); | |
a687059c | 1042 | } |
ff8e2863 | 1043 | do_execfree(); |
a687059c LW |
1044 | return FALSE; |
1045 | } | |
1046 | ||
79072805 LW |
1047 | I32 |
1048 | apply(type,mark,sp) | |
1049 | I32 type; | |
1050 | register SV **mark; | |
1051 | register SV **sp; | |
a687059c | 1052 | { |
79072805 LW |
1053 | register I32 val; |
1054 | register I32 val2; | |
1055 | register I32 tot = 0; | |
a687059c | 1056 | char *s; |
79072805 | 1057 | SV **oldmark = mark; |
a687059c | 1058 | |
463ee0b2 LW |
1059 | if (tainting) { |
1060 | while (++mark <= sp) { | |
748a9306 LW |
1061 | MAGIC *mg; |
1062 | if (SvMAGICAL(*mark) && (mg = mg_find(*mark, 't')) && mg->mg_len & 1) | |
463ee0b2 LW |
1063 | tainted = TRUE; |
1064 | } | |
1065 | mark = oldmark; | |
1066 | } | |
a687059c | 1067 | switch (type) { |
79072805 LW |
1068 | case OP_CHMOD: |
1069 | TAINT_PROPER("chmod"); | |
1070 | if (++mark <= sp) { | |
1071 | tot = sp - mark; | |
463ee0b2 | 1072 | val = SvIVx(*mark); |
79072805 | 1073 | while (++mark <= sp) { |
463ee0b2 | 1074 | if (chmod(SvPVx(*mark, na),val)) |
a687059c LW |
1075 | tot--; |
1076 | } | |
1077 | } | |
1078 | break; | |
fe14fcc3 | 1079 | #ifdef HAS_CHOWN |
79072805 LW |
1080 | case OP_CHOWN: |
1081 | TAINT_PROPER("chown"); | |
1082 | if (sp - mark > 2) { | |
463ee0b2 LW |
1083 | val = SvIVx(*++mark); |
1084 | val2 = SvIVx(*++mark); | |
a0d0e21e | 1085 | tot = sp - mark; |
79072805 | 1086 | while (++mark <= sp) { |
463ee0b2 | 1087 | if (chown(SvPVx(*mark, na),val,val2)) |
a687059c LW |
1088 | tot--; |
1089 | } | |
1090 | } | |
1091 | break; | |
b1248f16 | 1092 | #endif |
fe14fcc3 | 1093 | #ifdef HAS_KILL |
79072805 LW |
1094 | case OP_KILL: |
1095 | TAINT_PROPER("kill"); | |
463ee0b2 | 1096 | s = SvPVx(*++mark, na); |
79072805 LW |
1097 | tot = sp - mark; |
1098 | if (isUPPER(*s)) { | |
1099 | if (*s == 'S' && s[1] == 'I' && s[2] == 'G') | |
1100 | s += 3; | |
1101 | if (!(val = whichsig(s))) | |
463ee0b2 | 1102 | croak("Unrecognized signal name \"%s\"",s); |
79072805 LW |
1103 | } |
1104 | else | |
463ee0b2 | 1105 | val = SvIVx(*mark); |
3595fcef | 1106 | #ifdef VMS |
1107 | /* kill() doesn't do process groups (job trees?) under VMS */ | |
1108 | if (val < 0) val = -val; | |
1109 | if (val == SIGKILL) { | |
1110 | # include <starlet.h> | |
1111 | /* Use native sys$delprc() to insure that target process is | |
1112 | * deleted; supervisor-mode images don't pay attention to | |
1113 | * CRTL's emulation of Unix-style signals and kill() | |
1114 | */ | |
1115 | while (++mark <= sp) { | |
1116 | I32 proc = SvIVx(*mark); | |
1117 | register unsigned long int __vmssts; | |
1118 | if (!((__vmssts = sys$delprc(&proc,0)) & 1)) { | |
1119 | tot--; | |
1120 | switch (__vmssts) { | |
1121 | case SS$_NONEXPR: | |
1122 | case SS$_NOSUCHNODE: | |
1123 | SETERRNO(ESRCH,__vmssts); | |
1124 | break; | |
1125 | case SS$_NOPRIV: | |
1126 | SETERRNO(EPERM,__vmssts); | |
1127 | break; | |
1128 | default: | |
1129 | SETERRNO(EVMSERR,__vmssts); | |
1130 | } | |
1131 | } | |
1132 | } | |
1133 | break; | |
1134 | } | |
1135 | #endif | |
79072805 LW |
1136 | if (val < 0) { |
1137 | val = -val; | |
1138 | while (++mark <= sp) { | |
463ee0b2 | 1139 | I32 proc = SvIVx(*mark); |
fe14fcc3 | 1140 | #ifdef HAS_KILLPG |
79072805 | 1141 | if (killpg(proc,val)) /* BSD */ |
a687059c | 1142 | #else |
79072805 | 1143 | if (kill(-proc,val)) /* SYSV */ |
a687059c | 1144 | #endif |
79072805 | 1145 | tot--; |
a687059c | 1146 | } |
79072805 LW |
1147 | } |
1148 | else { | |
1149 | while (++mark <= sp) { | |
463ee0b2 | 1150 | if (kill(SvIVx(*mark),val)) |
79072805 | 1151 | tot--; |
a687059c LW |
1152 | } |
1153 | } | |
1154 | break; | |
b1248f16 | 1155 | #endif |
79072805 LW |
1156 | case OP_UNLINK: |
1157 | TAINT_PROPER("unlink"); | |
1158 | tot = sp - mark; | |
1159 | while (++mark <= sp) { | |
463ee0b2 | 1160 | s = SvPVx(*mark, na); |
a687059c LW |
1161 | if (euid || unsafe) { |
1162 | if (UNLINK(s)) | |
1163 | tot--; | |
1164 | } | |
1165 | else { /* don't let root wipe out directories without -U */ | |
fe14fcc3 | 1166 | #ifdef HAS_LSTAT |
c623bd54 | 1167 | if (lstat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode)) |
a687059c | 1168 | #else |
a0d0e21e | 1169 | if (Stat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode)) |
a687059c | 1170 | #endif |
a687059c LW |
1171 | tot--; |
1172 | else { | |
1173 | if (UNLINK(s)) | |
1174 | tot--; | |
1175 | } | |
1176 | } | |
1177 | } | |
1178 | break; | |
a0d0e21e | 1179 | #ifdef HAS_UTIME |
79072805 LW |
1180 | case OP_UTIME: |
1181 | TAINT_PROPER("utime"); | |
1182 | if (sp - mark > 2) { | |
748a9306 | 1183 | #if defined(I_UTIME) || defined(VMS) |
663a0e37 LW |
1184 | struct utimbuf utbuf; |
1185 | #else | |
a687059c | 1186 | struct { |
663a0e37 LW |
1187 | long actime; |
1188 | long modtime; | |
a687059c | 1189 | } utbuf; |
663a0e37 | 1190 | #endif |
a687059c | 1191 | |
afd9f252 | 1192 | Zero(&utbuf, sizeof utbuf, char); |
517844ec | 1193 | #ifdef BIG_TIME |
1194 | utbuf.actime = (Time_t)SvNVx(*++mark); /* time accessed */ | |
1195 | utbuf.modtime = (Time_t)SvNVx(*++mark); /* time modified */ | |
1196 | #else | |
463ee0b2 LW |
1197 | utbuf.actime = SvIVx(*++mark); /* time accessed */ |
1198 | utbuf.modtime = SvIVx(*++mark); /* time modified */ | |
517844ec | 1199 | #endif |
79072805 LW |
1200 | tot = sp - mark; |
1201 | while (++mark <= sp) { | |
463ee0b2 | 1202 | if (utime(SvPVx(*mark, na),&utbuf)) |
a687059c LW |
1203 | tot--; |
1204 | } | |
a687059c LW |
1205 | } |
1206 | else | |
79072805 | 1207 | tot = 0; |
a687059c | 1208 | break; |
a0d0e21e | 1209 | #endif |
a687059c LW |
1210 | } |
1211 | return tot; | |
1212 | } | |
1213 | ||
1214 | /* Do the permissions allow some operation? Assumes statcache already set. */ | |
a0d0e21e | 1215 | #ifndef VMS /* VMS' cando is in vms.c */ |
79072805 | 1216 | I32 |
a687059c | 1217 | cando(bit, effective, statbufp) |
79072805 LW |
1218 | I32 bit; |
1219 | I32 effective; | |
a687059c LW |
1220 | register struct stat *statbufp; |
1221 | { | |
bee1dbe2 | 1222 | #ifdef DOSISH |
fe14fcc3 LW |
1223 | /* [Comments and code from Len Reed] |
1224 | * MS-DOS "user" is similar to UNIX's "superuser," but can't write | |
1225 | * to write-protected files. The execute permission bit is set | |
1226 | * by the Miscrosoft C library stat() function for the following: | |
1227 | * .exe files | |
1228 | * .com files | |
1229 | * .bat files | |
1230 | * directories | |
1231 | * All files and directories are readable. | |
1232 | * Directories and special files, e.g. "CON", cannot be | |
1233 | * write-protected. | |
1234 | * [Comment by Tom Dinger -- a directory can have the write-protect | |
1235 | * bit set in the file system, but DOS permits changes to | |
1236 | * the directory anyway. In addition, all bets are off | |
1237 | * here for networked software, such as Novell and | |
1238 | * Sun's PC-NFS.] | |
1239 | */ | |
1240 | ||
bee1dbe2 LW |
1241 | /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat |
1242 | * too so it will actually look into the files for magic numbers | |
1243 | */ | |
fe14fcc3 LW |
1244 | return (bit & statbufp->st_mode) ? TRUE : FALSE; |
1245 | ||
1246 | #else /* ! MSDOS */ | |
a687059c | 1247 | if ((effective ? euid : uid) == 0) { /* root is special */ |
c623bd54 LW |
1248 | if (bit == S_IXUSR) { |
1249 | if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode)) | |
a687059c LW |
1250 | return TRUE; |
1251 | } | |
1252 | else | |
1253 | return TRUE; /* root reads and writes anything */ | |
1254 | return FALSE; | |
1255 | } | |
1256 | if (statbufp->st_uid == (effective ? euid : uid) ) { | |
1257 | if (statbufp->st_mode & bit) | |
1258 | return TRUE; /* ok as "user" */ | |
1259 | } | |
79072805 | 1260 | else if (ingroup((I32)statbufp->st_gid,effective)) { |
a687059c LW |
1261 | if (statbufp->st_mode & bit >> 3) |
1262 | return TRUE; /* ok as "group" */ | |
1263 | } | |
1264 | else if (statbufp->st_mode & bit >> 6) | |
1265 | return TRUE; /* ok as "other" */ | |
1266 | return FALSE; | |
fe14fcc3 | 1267 | #endif /* ! MSDOS */ |
a687059c | 1268 | } |
a0d0e21e | 1269 | #endif /* ! VMS */ |
a687059c | 1270 | |
79072805 | 1271 | I32 |
a687059c | 1272 | ingroup(testgid,effective) |
79072805 LW |
1273 | I32 testgid; |
1274 | I32 effective; | |
a687059c LW |
1275 | { |
1276 | if (testgid == (effective ? egid : gid)) | |
1277 | return TRUE; | |
fe14fcc3 | 1278 | #ifdef HAS_GETGROUPS |
a687059c LW |
1279 | #ifndef NGROUPS |
1280 | #define NGROUPS 32 | |
1281 | #endif | |
1282 | { | |
a0d0e21e | 1283 | Groups_t gary[NGROUPS]; |
79072805 | 1284 | I32 anum; |
a687059c LW |
1285 | |
1286 | anum = getgroups(NGROUPS,gary); | |
1287 | while (--anum >= 0) | |
1288 | if (gary[anum] == testgid) | |
1289 | return TRUE; | |
1290 | } | |
1291 | #endif | |
1292 | return FALSE; | |
1293 | } | |
c2ab57d4 | 1294 | |
fe14fcc3 | 1295 | #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM) |
c2ab57d4 | 1296 | |
79072805 LW |
1297 | I32 |
1298 | do_ipcget(optype, mark, sp) | |
1299 | I32 optype; | |
1300 | SV **mark; | |
1301 | SV **sp; | |
c2ab57d4 | 1302 | { |
c2ab57d4 | 1303 | key_t key; |
79072805 | 1304 | I32 n, flags; |
c2ab57d4 | 1305 | |
463ee0b2 LW |
1306 | key = (key_t)SvNVx(*++mark); |
1307 | n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark); | |
1308 | flags = SvIVx(*++mark); | |
748a9306 | 1309 | SETERRNO(0,0); |
c2ab57d4 LW |
1310 | switch (optype) |
1311 | { | |
fe14fcc3 | 1312 | #ifdef HAS_MSG |
79072805 | 1313 | case OP_MSGGET: |
c2ab57d4 | 1314 | return msgget(key, flags); |
e5d73d77 | 1315 | #endif |
fe14fcc3 | 1316 | #ifdef HAS_SEM |
79072805 | 1317 | case OP_SEMGET: |
c2ab57d4 | 1318 | return semget(key, n, flags); |
e5d73d77 | 1319 | #endif |
fe14fcc3 | 1320 | #ifdef HAS_SHM |
79072805 | 1321 | case OP_SHMGET: |
c2ab57d4 | 1322 | return shmget(key, n, flags); |
e5d73d77 | 1323 | #endif |
fe14fcc3 | 1324 | #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
e5d73d77 | 1325 | default: |
c07a80fd | 1326 | croak("%s not implemented", op_desc[optype]); |
e5d73d77 | 1327 | #endif |
c2ab57d4 LW |
1328 | } |
1329 | return -1; /* should never happen */ | |
1330 | } | |
1331 | ||
79072805 LW |
1332 | I32 |
1333 | do_ipcctl(optype, mark, sp) | |
1334 | I32 optype; | |
1335 | SV **mark; | |
1336 | SV **sp; | |
c2ab57d4 | 1337 | { |
79072805 | 1338 | SV *astr; |
c2ab57d4 | 1339 | char *a; |
a0d0e21e LW |
1340 | I32 id, n, cmd, infosize, getinfo; |
1341 | I32 ret = -1; | |
c2ab57d4 | 1342 | |
463ee0b2 LW |
1343 | id = SvIVx(*++mark); |
1344 | n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0; | |
1345 | cmd = SvIVx(*++mark); | |
79072805 | 1346 | astr = *++mark; |
c2ab57d4 LW |
1347 | infosize = 0; |
1348 | getinfo = (cmd == IPC_STAT); | |
1349 | ||
1350 | switch (optype) | |
1351 | { | |
fe14fcc3 | 1352 | #ifdef HAS_MSG |
79072805 | 1353 | case OP_MSGCTL: |
c2ab57d4 LW |
1354 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1355 | infosize = sizeof(struct msqid_ds); | |
1356 | break; | |
e5d73d77 | 1357 | #endif |
fe14fcc3 | 1358 | #ifdef HAS_SHM |
79072805 | 1359 | case OP_SHMCTL: |
c2ab57d4 LW |
1360 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1361 | infosize = sizeof(struct shmid_ds); | |
1362 | break; | |
e5d73d77 | 1363 | #endif |
fe14fcc3 | 1364 | #ifdef HAS_SEM |
79072805 | 1365 | case OP_SEMCTL: |
c2ab57d4 LW |
1366 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1367 | infosize = sizeof(struct semid_ds); | |
1368 | else if (cmd == GETALL || cmd == SETALL) | |
1369 | { | |
1370 | struct semid_ds semds; | |
1371 | if (semctl(id, 0, IPC_STAT, &semds) == -1) | |
1372 | return -1; | |
1373 | getinfo = (cmd == GETALL); | |
6e21c824 LW |
1374 | infosize = semds.sem_nsems * sizeof(short); |
1375 | /* "short" is technically wrong but much more portable | |
1376 | than guessing about u_?short(_t)? */ | |
c2ab57d4 LW |
1377 | } |
1378 | break; | |
e5d73d77 | 1379 | #endif |
fe14fcc3 | 1380 | #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
e5d73d77 | 1381 | default: |
c07a80fd | 1382 | croak("%s not implemented", op_desc[optype]); |
e5d73d77 | 1383 | #endif |
c2ab57d4 LW |
1384 | } |
1385 | ||
1386 | if (infosize) | |
1387 | { | |
a0d0e21e | 1388 | STRLEN len; |
c2ab57d4 LW |
1389 | if (getinfo) |
1390 | { | |
a0d0e21e LW |
1391 | SvPV_force(astr, len); |
1392 | a = SvGROW(astr, infosize+1); | |
c2ab57d4 LW |
1393 | } |
1394 | else | |
1395 | { | |
463ee0b2 LW |
1396 | a = SvPV(astr, len); |
1397 | if (len != infosize) | |
1398 | croak("Bad arg length for %s, is %d, should be %d", | |
c07a80fd | 1399 | op_desc[optype], len, infosize); |
c2ab57d4 LW |
1400 | } |
1401 | } | |
1402 | else | |
1403 | { | |
463ee0b2 | 1404 | I32 i = SvIV(astr); |
c2ab57d4 LW |
1405 | a = (char *)i; /* ouch */ |
1406 | } | |
748a9306 | 1407 | SETERRNO(0,0); |
c2ab57d4 LW |
1408 | switch (optype) |
1409 | { | |
fe14fcc3 | 1410 | #ifdef HAS_MSG |
79072805 | 1411 | case OP_MSGCTL: |
bee1dbe2 | 1412 | ret = msgctl(id, cmd, (struct msqid_ds *)a); |
c2ab57d4 | 1413 | break; |
e5d73d77 | 1414 | #endif |
fe14fcc3 | 1415 | #ifdef HAS_SEM |
79072805 LW |
1416 | case OP_SEMCTL: |
1417 | ret = semctl(id, n, cmd, (struct semid_ds *)a); | |
c2ab57d4 | 1418 | break; |
e5d73d77 | 1419 | #endif |
fe14fcc3 | 1420 | #ifdef HAS_SHM |
79072805 | 1421 | case OP_SHMCTL: |
bee1dbe2 | 1422 | ret = shmctl(id, cmd, (struct shmid_ds *)a); |
c2ab57d4 | 1423 | break; |
e5d73d77 | 1424 | #endif |
c2ab57d4 LW |
1425 | } |
1426 | if (getinfo && ret >= 0) { | |
79072805 LW |
1427 | SvCUR_set(astr, infosize); |
1428 | *SvEND(astr) = '\0'; | |
a0d0e21e | 1429 | SvSETMAGIC(astr); |
c2ab57d4 LW |
1430 | } |
1431 | return ret; | |
1432 | } | |
1433 | ||
79072805 LW |
1434 | I32 |
1435 | do_msgsnd(mark, sp) | |
1436 | SV **mark; | |
1437 | SV **sp; | |
c2ab57d4 | 1438 | { |
fe14fcc3 | 1439 | #ifdef HAS_MSG |
79072805 | 1440 | SV *mstr; |
c2ab57d4 | 1441 | char *mbuf; |
79072805 | 1442 | I32 id, msize, flags; |
463ee0b2 | 1443 | STRLEN len; |
c2ab57d4 | 1444 | |
463ee0b2 | 1445 | id = SvIVx(*++mark); |
79072805 | 1446 | mstr = *++mark; |
463ee0b2 LW |
1447 | flags = SvIVx(*++mark); |
1448 | mbuf = SvPV(mstr, len); | |
1449 | if ((msize = len - sizeof(long)) < 0) | |
1450 | croak("Arg too short for msgsnd"); | |
748a9306 | 1451 | SETERRNO(0,0); |
bee1dbe2 | 1452 | return msgsnd(id, (struct msgbuf *)mbuf, msize, flags); |
e5d73d77 | 1453 | #else |
463ee0b2 | 1454 | croak("msgsnd not implemented"); |
e5d73d77 | 1455 | #endif |
c2ab57d4 LW |
1456 | } |
1457 | ||
79072805 LW |
1458 | I32 |
1459 | do_msgrcv(mark, sp) | |
1460 | SV **mark; | |
1461 | SV **sp; | |
c2ab57d4 | 1462 | { |
fe14fcc3 | 1463 | #ifdef HAS_MSG |
79072805 | 1464 | SV *mstr; |
c2ab57d4 LW |
1465 | char *mbuf; |
1466 | long mtype; | |
79072805 | 1467 | I32 id, msize, flags, ret; |
463ee0b2 | 1468 | STRLEN len; |
79072805 | 1469 | |
463ee0b2 | 1470 | id = SvIVx(*++mark); |
79072805 | 1471 | mstr = *++mark; |
463ee0b2 LW |
1472 | msize = SvIVx(*++mark); |
1473 | mtype = (long)SvIVx(*++mark); | |
1474 | flags = SvIVx(*++mark); | |
ed6116ce LW |
1475 | if (SvTHINKFIRST(mstr)) { |
1476 | if (SvREADONLY(mstr)) | |
1477 | croak("Can't msgrcv to readonly var"); | |
1478 | if (SvROK(mstr)) | |
1479 | sv_unref(mstr); | |
1480 | } | |
a0d0e21e LW |
1481 | SvPV_force(mstr, len); |
1482 | mbuf = SvGROW(mstr, sizeof(long)+msize+1); | |
1483 | ||
748a9306 | 1484 | SETERRNO(0,0); |
bee1dbe2 | 1485 | ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags); |
c2ab57d4 | 1486 | if (ret >= 0) { |
79072805 LW |
1487 | SvCUR_set(mstr, sizeof(long)+ret); |
1488 | *SvEND(mstr) = '\0'; | |
c2ab57d4 LW |
1489 | } |
1490 | return ret; | |
e5d73d77 | 1491 | #else |
463ee0b2 | 1492 | croak("msgrcv not implemented"); |
e5d73d77 | 1493 | #endif |
c2ab57d4 LW |
1494 | } |
1495 | ||
79072805 LW |
1496 | I32 |
1497 | do_semop(mark, sp) | |
1498 | SV **mark; | |
1499 | SV **sp; | |
c2ab57d4 | 1500 | { |
fe14fcc3 | 1501 | #ifdef HAS_SEM |
79072805 | 1502 | SV *opstr; |
c2ab57d4 | 1503 | char *opbuf; |
463ee0b2 LW |
1504 | I32 id; |
1505 | STRLEN opsize; | |
c2ab57d4 | 1506 | |
463ee0b2 | 1507 | id = SvIVx(*++mark); |
79072805 | 1508 | opstr = *++mark; |
463ee0b2 | 1509 | opbuf = SvPV(opstr, opsize); |
c2ab57d4 LW |
1510 | if (opsize < sizeof(struct sembuf) |
1511 | || (opsize % sizeof(struct sembuf)) != 0) { | |
748a9306 | 1512 | SETERRNO(EINVAL,LIB$_INVARG); |
c2ab57d4 LW |
1513 | return -1; |
1514 | } | |
748a9306 | 1515 | SETERRNO(0,0); |
6e21c824 | 1516 | return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf)); |
e5d73d77 | 1517 | #else |
463ee0b2 | 1518 | croak("semop not implemented"); |
e5d73d77 | 1519 | #endif |
c2ab57d4 LW |
1520 | } |
1521 | ||
79072805 LW |
1522 | I32 |
1523 | do_shmio(optype, mark, sp) | |
1524 | I32 optype; | |
1525 | SV **mark; | |
1526 | SV **sp; | |
c2ab57d4 | 1527 | { |
fe14fcc3 | 1528 | #ifdef HAS_SHM |
79072805 | 1529 | SV *mstr; |
c2ab57d4 | 1530 | char *mbuf, *shm; |
79072805 | 1531 | I32 id, mpos, msize; |
463ee0b2 | 1532 | STRLEN len; |
c2ab57d4 | 1533 | struct shmid_ds shmds; |
c2ab57d4 | 1534 | |
463ee0b2 | 1535 | id = SvIVx(*++mark); |
79072805 | 1536 | mstr = *++mark; |
463ee0b2 LW |
1537 | mpos = SvIVx(*++mark); |
1538 | msize = SvIVx(*++mark); | |
748a9306 | 1539 | SETERRNO(0,0); |
c2ab57d4 LW |
1540 | if (shmctl(id, IPC_STAT, &shmds) == -1) |
1541 | return -1; | |
1542 | if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) { | |
748a9306 | 1543 | SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */ |
c2ab57d4 LW |
1544 | return -1; |
1545 | } | |
a0d0e21e | 1546 | shm = (Shmat_t)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0); |
c2ab57d4 LW |
1547 | if (shm == (char *)-1) /* I hate System V IPC, I really do */ |
1548 | return -1; | |
79072805 | 1549 | if (optype == OP_SHMREAD) { |
a0d0e21e LW |
1550 | SvPV_force(mstr, len); |
1551 | mbuf = SvGROW(mstr, msize+1); | |
1552 | ||
bee1dbe2 | 1553 | Copy(shm + mpos, mbuf, msize, char); |
79072805 LW |
1554 | SvCUR_set(mstr, msize); |
1555 | *SvEND(mstr) = '\0'; | |
a0d0e21e | 1556 | SvSETMAGIC(mstr); |
c2ab57d4 LW |
1557 | } |
1558 | else { | |
79072805 | 1559 | I32 n; |
c2ab57d4 | 1560 | |
a0d0e21e | 1561 | mbuf = SvPV(mstr, len); |
463ee0b2 | 1562 | if ((n = len) > msize) |
c2ab57d4 | 1563 | n = msize; |
bee1dbe2 | 1564 | Copy(mbuf, shm + mpos, n, char); |
c2ab57d4 | 1565 | if (n < msize) |
bee1dbe2 | 1566 | memzero(shm + mpos + n, msize - n); |
c2ab57d4 LW |
1567 | } |
1568 | return shmdt(shm); | |
e5d73d77 | 1569 | #else |
463ee0b2 | 1570 | croak("shm I/O not implemented"); |
e5d73d77 | 1571 | #endif |
c2ab57d4 LW |
1572 | } |
1573 | ||
fe14fcc3 | 1574 | #endif /* SYSV IPC */ |