Commit | Line | Data |
79072805 |
1 | /* $RCSfile: doio.c,v $$Revision: 4.1 $$Date: 92/08/07 17:19:42 $ |
a687059c |
2 | * |
6e21c824 |
3 | * Copyright (c) 1991, 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 | * |
8 | * $Log: doio.c,v $ |
79072805 |
9 | * Revision 4.1 92/08/07 17:19:42 lwall |
10 | * Stage 6 Snapshot |
11 | * |
faf8582f |
12 | * Revision 4.0.1.6 92/06/11 21:08:16 lwall |
13 | * patch34: some systems don't declare h_errno extern in header files |
14 | * |
bee1dbe2 |
15 | * Revision 4.0.1.5 92/06/08 13:00:21 lwall |
16 | * patch20: some machines don't define ENOTSOCK in errno.h |
17 | * patch20: new warnings for failed use of stat operators on filenames with \n |
18 | * patch20: wait failed when STDOUT or STDERR reopened to a pipe |
19 | * patch20: end of file latch not reset on reopen of STDIN |
20 | * patch20: seek(HANDLE, 0, 1) went to eof because of ancient Ultrix workaround |
21 | * patch20: fixed memory leak on system() for vfork() machines |
22 | * patch20: get*by* routines now return something useful in a scalar context |
23 | * patch20: h_errno now accessible via $? |
24 | * |
99b89507 |
25 | * Revision 4.0.1.4 91/11/05 16:51:43 lwall |
26 | * patch11: prepared for ctype implementations that don't define isascii() |
27 | * patch11: perl mistook some streams for sockets because they return mode 0 too |
28 | * patch11: reopening STDIN, STDOUT and STDERR failed on some machines |
29 | * patch11: certain perl errors should set EBADF so that $! looks better |
30 | * patch11: truncate on a closed filehandle could dump |
31 | * patch11: stats of _ forgot whether prior stat was actually lstat |
32 | * patch11: -T returned true on NFS directory |
33 | * |
1462b684 |
34 | * Revision 4.0.1.3 91/06/10 01:21:19 lwall |
35 | * patch10: read didn't work from character special files open for writing |
36 | * patch10: close-on-exec wrongly set on system file descriptors |
37 | * |
6e21c824 |
38 | * Revision 4.0.1.2 91/06/07 10:53:39 lwall |
39 | * patch4: new copyright notice |
40 | * patch4: system fd's are now treated specially |
41 | * patch4: added $^F variable to specify maximum system fd, default 2 |
42 | * patch4: character special files now opened with bidirectional stdio buffers |
43 | * patch4: taintchecks could improperly modify parent in vfork() |
44 | * patch4: many, many itty-bitty portability fixes |
45 | * |
1c3d792e |
46 | * Revision 4.0.1.1 91/04/11 17:41:06 lwall |
47 | * patch1: hopefully straightened out some of the Xenix mess |
48 | * |
fe14fcc3 |
49 | * Revision 4.0 91/03/20 01:07:06 lwall |
50 | * 4.0 baseline. |
a687059c |
51 | * |
52 | */ |
53 | |
54 | #include "EXTERN.h" |
55 | #include "perl.h" |
56 | |
fe14fcc3 |
57 | #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM) |
c2ab57d4 |
58 | #include <sys/ipc.h> |
fe14fcc3 |
59 | #ifdef HAS_MSG |
c2ab57d4 |
60 | #include <sys/msg.h> |
e5d73d77 |
61 | #endif |
fe14fcc3 |
62 | #ifdef HAS_SEM |
c2ab57d4 |
63 | #include <sys/sem.h> |
e5d73d77 |
64 | #endif |
fe14fcc3 |
65 | #ifdef HAS_SHM |
c2ab57d4 |
66 | #include <sys/shm.h> |
67 | #endif |
e5d73d77 |
68 | #endif |
c2ab57d4 |
69 | |
663a0e37 |
70 | #ifdef I_UTIME |
71 | #include <utime.h> |
72 | #endif |
ff8e2863 |
73 | #ifdef I_FCNTL |
74 | #include <fcntl.h> |
75 | #endif |
fe14fcc3 |
76 | #ifdef I_SYS_FILE |
77 | #include <sys/file.h> |
78 | #endif |
a687059c |
79 | |
80 | bool |
79072805 |
81 | do_open(gv,name,len) |
82 | GV *gv; |
a687059c |
83 | register char *name; |
79072805 |
84 | I32 len; |
a687059c |
85 | { |
86 | FILE *fp; |
79072805 |
87 | register IO *io = GvIO(gv); |
a687059c |
88 | char *myname = savestr(name); |
89 | int result; |
90 | int fd; |
91 | int writing = 0; |
92 | char mode[3]; /* stdio file mode ("r\0" or "r+\0") */ |
6e21c824 |
93 | FILE *saveifp = Nullfp; |
94 | FILE *saveofp = Nullfp; |
95 | char savetype = ' '; |
a687059c |
96 | |
bee1dbe2 |
97 | mode[0] = mode[1] = mode[2] = '\0'; |
a687059c |
98 | name = myname; |
99 | forkprocess = 1; /* assume true if no fork */ |
99b89507 |
100 | while (len && isSPACE(name[len-1])) |
a687059c |
101 | name[--len] = '\0'; |
79072805 |
102 | if (!io) |
103 | io = GvIO(gv) = newIO(); |
104 | else if (io->ifp) { |
105 | fd = fileno(io->ifp); |
106 | if (io->type == '-') |
c2ab57d4 |
107 | result = 0; |
6e21c824 |
108 | else if (fd <= maxsysfd) { |
79072805 |
109 | saveifp = io->ifp; |
110 | saveofp = io->ofp; |
111 | savetype = io->type; |
6e21c824 |
112 | result = 0; |
113 | } |
79072805 |
114 | else if (io->type == '|') |
115 | result = my_pclose(io->ifp); |
116 | else if (io->ifp != io->ofp) { |
117 | if (io->ofp) { |
118 | result = fclose(io->ofp); |
119 | fclose(io->ifp); /* clear stdio, fd already closed */ |
c2ab57d4 |
120 | } |
121 | else |
79072805 |
122 | result = fclose(io->ifp); |
a687059c |
123 | } |
a687059c |
124 | else |
79072805 |
125 | result = fclose(io->ifp); |
6e21c824 |
126 | if (result == EOF && fd > maxsysfd) |
a687059c |
127 | fprintf(stderr,"Warning: unable to close filehandle %s properly.\n", |
79072805 |
128 | GvENAME(gv)); |
129 | io->ofp = io->ifp = Nullfp; |
a687059c |
130 | } |
131 | if (*name == '+' && len > 1 && name[len-1] != '|') { /* scary */ |
132 | mode[1] = *name++; |
133 | mode[2] = '\0'; |
134 | --len; |
135 | writing = 1; |
136 | } |
137 | else { |
138 | mode[1] = '\0'; |
139 | } |
79072805 |
140 | io->type = *name; |
a687059c |
141 | if (*name == '|') { |
99b89507 |
142 | /*SUPPRESS 530*/ |
143 | for (name++; isSPACE(*name); name++) ; |
79072805 |
144 | if (strNE(name,"-")) |
145 | TAINT_ENV(); |
146 | TAINT_PROPER("piped open"); |
147 | fp = my_popen(name,"w"); |
a687059c |
148 | writing = 1; |
149 | } |
a687059c |
150 | else if (*name == '>') { |
79072805 |
151 | TAINT_PROPER("open"); |
bf38876a |
152 | name++; |
153 | if (*name == '>') { |
79072805 |
154 | mode[0] = io->type = 'a'; |
bf38876a |
155 | name++; |
a687059c |
156 | } |
bf38876a |
157 | else |
a687059c |
158 | mode[0] = 'w'; |
a687059c |
159 | writing = 1; |
bf38876a |
160 | if (*name == '&') { |
161 | duplicity: |
162 | name++; |
99b89507 |
163 | while (isSPACE(*name)) |
bf38876a |
164 | name++; |
99b89507 |
165 | if (isDIGIT(*name)) |
bf38876a |
166 | fd = atoi(name); |
167 | else { |
79072805 |
168 | gv = gv_fetchpv(name,FALSE); |
169 | if (!gv || !GvIO(gv)) { |
6e21c824 |
170 | #ifdef EINVAL |
171 | errno = EINVAL; |
172 | #endif |
173 | goto say_false; |
174 | } |
79072805 |
175 | if (GvIO(gv) && GvIO(gv)->ifp) { |
176 | fd = fileno(GvIO(gv)->ifp); |
177 | if (GvIO(gv)->type == 's') |
178 | io->type = 's'; |
bf38876a |
179 | } |
180 | else |
181 | fd = -1; |
182 | } |
fe14fcc3 |
183 | if (!(fp = fdopen(fd = dup(fd),mode))) { |
184 | close(fd); |
185 | } |
bf38876a |
186 | } |
187 | else { |
99b89507 |
188 | while (isSPACE(*name)) |
bf38876a |
189 | name++; |
190 | if (strEQ(name,"-")) { |
191 | fp = stdout; |
79072805 |
192 | io->type = '-'; |
bf38876a |
193 | } |
194 | else { |
195 | fp = fopen(name,mode); |
196 | } |
197 | } |
a687059c |
198 | } |
199 | else { |
200 | if (*name == '<') { |
bf38876a |
201 | mode[0] = 'r'; |
202 | name++; |
99b89507 |
203 | while (isSPACE(*name)) |
bf38876a |
204 | name++; |
205 | if (*name == '&') |
206 | goto duplicity; |
a687059c |
207 | if (strEQ(name,"-")) { |
208 | fp = stdin; |
79072805 |
209 | io->type = '-'; |
a687059c |
210 | } |
bf38876a |
211 | else |
a687059c |
212 | fp = fopen(name,mode); |
a687059c |
213 | } |
214 | else if (name[len-1] == '|') { |
a687059c |
215 | name[--len] = '\0'; |
99b89507 |
216 | while (len && isSPACE(name[len-1])) |
a687059c |
217 | name[--len] = '\0'; |
99b89507 |
218 | /*SUPPRESS 530*/ |
219 | for (; isSPACE(*name); name++) ; |
79072805 |
220 | if (strNE(name,"-")) |
221 | TAINT_ENV(); |
222 | TAINT_PROPER("piped open"); |
223 | fp = my_popen(name,"r"); |
224 | io->type = '|'; |
a687059c |
225 | } |
226 | else { |
79072805 |
227 | io->type = '<'; |
99b89507 |
228 | /*SUPPRESS 530*/ |
229 | for (; isSPACE(*name); name++) ; |
a687059c |
230 | if (strEQ(name,"-")) { |
231 | fp = stdin; |
79072805 |
232 | io->type = '-'; |
a687059c |
233 | } |
234 | else |
235 | fp = fopen(name,"r"); |
236 | } |
237 | } |
bee1dbe2 |
238 | if (!fp) { |
79072805 |
239 | if (dowarn && io->type == '<' && index(name, '\n')) |
bee1dbe2 |
240 | warn(warn_nl, "open"); |
241 | Safefree(myname); |
6e21c824 |
242 | goto say_false; |
bee1dbe2 |
243 | } |
244 | Safefree(myname); |
79072805 |
245 | if (io->type && |
246 | io->type != '|' && io->type != '-') { |
a687059c |
247 | if (fstat(fileno(fp),&statbuf) < 0) { |
248 | (void)fclose(fp); |
6e21c824 |
249 | goto say_false; |
a687059c |
250 | } |
1462b684 |
251 | if (S_ISSOCK(statbuf.st_mode)) |
79072805 |
252 | io->type = 's'; /* in case a socket was passed in to us */ |
99b89507 |
253 | #ifdef HAS_SOCKET |
254 | else if ( |
c623bd54 |
255 | #ifdef S_IFMT |
99b89507 |
256 | !(statbuf.st_mode & S_IFMT) |
257 | #else |
258 | !statbuf.st_mode |
259 | #endif |
260 | ) { |
79072805 |
261 | I32 buflen = sizeof tokenbuf; |
bee1dbe2 |
262 | if (getsockname(fileno(fp), tokenbuf, &buflen) >= 0 |
263 | || errno != ENOTSOCK) |
79072805 |
264 | io->type = 's'; /* some OS's return 0 on fstat()ed socket */ |
99b89507 |
265 | /* but some return 0 for streams too, sigh */ |
266 | } |
bf38876a |
267 | #endif |
a687059c |
268 | } |
6e21c824 |
269 | if (saveifp) { /* must use old fp? */ |
270 | fd = fileno(saveifp); |
271 | if (saveofp) { |
272 | fflush(saveofp); /* emulate fclose() */ |
273 | if (saveofp != saveifp) { /* was a socket? */ |
274 | fclose(saveofp); |
99b89507 |
275 | if (fd > 2) |
276 | Safefree(saveofp); |
6e21c824 |
277 | } |
278 | } |
279 | if (fd != fileno(fp)) { |
bee1dbe2 |
280 | int pid; |
79072805 |
281 | SV *sv; |
bee1dbe2 |
282 | |
6e21c824 |
283 | dup2(fileno(fp), fd); |
79072805 |
284 | sv = *av_fetch(fdpid,fileno(fp),TRUE); |
285 | SvUPGRADE(sv, SVt_IV); |
286 | pid = SvIV(sv); |
287 | SvIV(sv) = 0; |
288 | sv = *av_fetch(fdpid,fd,TRUE); |
289 | SvUPGRADE(sv, SVt_IV); |
290 | SvIV(sv) = pid; |
6e21c824 |
291 | fclose(fp); |
bee1dbe2 |
292 | |
6e21c824 |
293 | } |
294 | fp = saveifp; |
bee1dbe2 |
295 | clearerr(fp); |
6e21c824 |
296 | } |
79072805 |
297 | #if defined(HAS_FCNTL) && defined(FFt_SETFD) |
1462b684 |
298 | fd = fileno(fp); |
79072805 |
299 | fcntl(fd,FFt_SETFD,fd > maxsysfd); |
1462b684 |
300 | #endif |
79072805 |
301 | io->ifp = fp; |
bf38876a |
302 | if (writing) { |
79072805 |
303 | if (io->type == 's' |
304 | || (io->type == '>' && S_ISCHR(statbuf.st_mode)) ) { |
305 | if (!(io->ofp = fdopen(fileno(fp),"w"))) { |
fe14fcc3 |
306 | fclose(fp); |
79072805 |
307 | io->ifp = Nullfp; |
6e21c824 |
308 | goto say_false; |
fe14fcc3 |
309 | } |
1462b684 |
310 | } |
311 | else |
79072805 |
312 | io->ofp = fp; |
bf38876a |
313 | } |
a687059c |
314 | return TRUE; |
6e21c824 |
315 | |
316 | say_false: |
79072805 |
317 | io->ifp = saveifp; |
318 | io->ofp = saveofp; |
319 | io->type = savetype; |
6e21c824 |
320 | return FALSE; |
a687059c |
321 | } |
322 | |
323 | FILE * |
79072805 |
324 | nextargv(gv) |
325 | register GV *gv; |
a687059c |
326 | { |
79072805 |
327 | register SV *sv; |
99b89507 |
328 | #ifndef FLEXFILENAMES |
c623bd54 |
329 | int filedev; |
330 | int fileino; |
99b89507 |
331 | #endif |
c623bd54 |
332 | int fileuid; |
333 | int filegid; |
fe14fcc3 |
334 | |
79072805 |
335 | if (!argvoutgv) |
336 | argvoutgv = gv_fetchpv("ARGVOUT",TRUE); |
fe14fcc3 |
337 | if (filemode & (S_ISUID|S_ISGID)) { |
79072805 |
338 | fflush(GvIO(argvoutgv)->ifp); /* chmod must follow last write */ |
fe14fcc3 |
339 | #ifdef HAS_FCHMOD |
340 | (void)fchmod(lastfd,filemode); |
341 | #else |
342 | (void)chmod(oldname,filemode); |
343 | #endif |
344 | } |
345 | filemode = 0; |
79072805 |
346 | while (av_len(GvAV(gv)) >= 0) { |
347 | sv = av_shift(GvAV(gv)); |
348 | sv_setsv(GvSV(gv),sv); |
349 | SvSETMAGIC(GvSV(gv)); |
350 | oldname = SvPVnx(GvSV(gv)); |
351 | if (do_open(gv,oldname,SvCUR(GvSV(gv)))) { |
a687059c |
352 | if (inplace) { |
79072805 |
353 | TAINT_PROPER("inplace open"); |
c623bd54 |
354 | if (strEQ(oldname,"-")) { |
79072805 |
355 | sv_free(sv); |
356 | defoutgv = gv_fetchpv("STDOUT",TRUE); |
357 | return GvIO(gv)->ifp; |
c623bd54 |
358 | } |
99b89507 |
359 | #ifndef FLEXFILENAMES |
c623bd54 |
360 | filedev = statbuf.st_dev; |
361 | fileino = statbuf.st_ino; |
99b89507 |
362 | #endif |
a687059c |
363 | filemode = statbuf.st_mode; |
364 | fileuid = statbuf.st_uid; |
365 | filegid = statbuf.st_gid; |
c623bd54 |
366 | if (!S_ISREG(filemode)) { |
367 | warn("Can't do inplace edit: %s is not a regular file", |
368 | oldname ); |
79072805 |
369 | do_close(gv,FALSE); |
370 | sv_free(sv); |
c623bd54 |
371 | continue; |
372 | } |
a687059c |
373 | if (*inplace) { |
ff8e2863 |
374 | #ifdef SUFFIX |
79072805 |
375 | add_suffix(sv,inplace); |
ff8e2863 |
376 | #else |
79072805 |
377 | sv_catpv(sv,inplace); |
ff8e2863 |
378 | #endif |
c623bd54 |
379 | #ifndef FLEXFILENAMES |
79072805 |
380 | if (stat(SvPV(sv),&statbuf) >= 0 |
c623bd54 |
381 | && statbuf.st_dev == filedev |
382 | && statbuf.st_ino == fileino ) { |
383 | warn("Can't do inplace edit: %s > 14 characters", |
79072805 |
384 | SvPV(sv) ); |
385 | do_close(gv,FALSE); |
386 | sv_free(sv); |
c623bd54 |
387 | continue; |
388 | } |
389 | #endif |
fe14fcc3 |
390 | #ifdef HAS_RENAME |
bee1dbe2 |
391 | #ifndef DOSISH |
79072805 |
392 | if (rename(oldname,SvPV(sv)) < 0) { |
c623bd54 |
393 | warn("Can't rename %s to %s: %s, skipping file", |
79072805 |
394 | oldname, SvPV(sv), strerror(errno) ); |
395 | do_close(gv,FALSE); |
396 | sv_free(sv); |
c623bd54 |
397 | continue; |
398 | } |
a687059c |
399 | #else |
79072805 |
400 | do_close(gv,FALSE); |
401 | (void)unlink(SvPV(sv)); |
402 | (void)rename(oldname,SvPV(sv)); |
403 | do_open(gv,SvPV(sv),SvCUR(GvSV(gv))); |
ff8e2863 |
404 | #endif /* MSDOS */ |
405 | #else |
79072805 |
406 | (void)UNLINK(SvPV(sv)); |
407 | if (link(oldname,SvPV(sv)) < 0) { |
c623bd54 |
408 | warn("Can't rename %s to %s: %s, skipping file", |
79072805 |
409 | oldname, SvPV(sv), strerror(errno) ); |
410 | do_close(gv,FALSE); |
411 | sv_free(sv); |
c623bd54 |
412 | continue; |
413 | } |
a687059c |
414 | (void)UNLINK(oldname); |
415 | #endif |
416 | } |
417 | else { |
bee1dbe2 |
418 | #ifndef DOSISH |
fe14fcc3 |
419 | if (UNLINK(oldname) < 0) { |
420 | warn("Can't rename %s to %s: %s, skipping file", |
79072805 |
421 | oldname, SvPV(sv), strerror(errno) ); |
422 | do_close(gv,FALSE); |
423 | sv_free(sv); |
fe14fcc3 |
424 | continue; |
425 | } |
ff8e2863 |
426 | #else |
427 | fatal("Can't do inplace edit without backup"); |
428 | #endif |
a687059c |
429 | } |
430 | |
79072805 |
431 | sv_setpvn(sv,">",1); |
432 | sv_catpv(sv,oldname); |
a687059c |
433 | errno = 0; /* in case sprintf set errno */ |
79072805 |
434 | if (!do_open(argvoutgv,SvPV(sv),SvCUR(sv))) { |
c623bd54 |
435 | warn("Can't do inplace edit on %s: %s", |
436 | oldname, strerror(errno) ); |
79072805 |
437 | do_close(gv,FALSE); |
438 | sv_free(sv); |
fe14fcc3 |
439 | continue; |
440 | } |
79072805 |
441 | defoutgv = argvoutgv; |
442 | lastfd = fileno(GvIO(argvoutgv)->ifp); |
fe14fcc3 |
443 | (void)fstat(lastfd,&statbuf); |
444 | #ifdef HAS_FCHMOD |
445 | (void)fchmod(lastfd,filemode); |
a687059c |
446 | #else |
447 | (void)chmod(oldname,filemode); |
448 | #endif |
fe14fcc3 |
449 | if (fileuid != statbuf.st_uid || filegid != statbuf.st_gid) { |
450 | #ifdef HAS_FCHOWN |
451 | (void)fchown(lastfd,fileuid,filegid); |
a687059c |
452 | #else |
fe14fcc3 |
453 | #ifdef HAS_CHOWN |
454 | (void)chown(oldname,fileuid,filegid); |
a687059c |
455 | #endif |
b1248f16 |
456 | #endif |
fe14fcc3 |
457 | } |
a687059c |
458 | } |
79072805 |
459 | sv_free(sv); |
460 | return GvIO(gv)->ifp; |
a687059c |
461 | } |
462 | else |
79072805 |
463 | fprintf(stderr,"Can't open %s: %s\n",SvPVn(sv), strerror(errno)); |
464 | sv_free(sv); |
a687059c |
465 | } |
466 | if (inplace) { |
79072805 |
467 | (void)do_close(argvoutgv,FALSE); |
468 | defoutgv = gv_fetchpv("STDOUT",TRUE); |
a687059c |
469 | } |
470 | return Nullfp; |
471 | } |
472 | |
fe14fcc3 |
473 | #ifdef HAS_PIPE |
afd9f252 |
474 | void |
79072805 |
475 | do_pipe(sv, rgv, wgv) |
476 | SV *sv; |
477 | GV *rgv; |
478 | GV *wgv; |
afd9f252 |
479 | { |
79072805 |
480 | register IO *rstio; |
481 | register IO *wstio; |
afd9f252 |
482 | int fd[2]; |
483 | |
79072805 |
484 | if (!rgv) |
afd9f252 |
485 | goto badexit; |
79072805 |
486 | if (!wgv) |
afd9f252 |
487 | goto badexit; |
488 | |
79072805 |
489 | rstio = GvIO(rgv); |
490 | wstio = GvIO(wgv); |
afd9f252 |
491 | |
492 | if (!rstio) |
79072805 |
493 | rstio = GvIO(rgv) = newIO(); |
afd9f252 |
494 | else if (rstio->ifp) |
79072805 |
495 | do_close(rgv,FALSE); |
afd9f252 |
496 | if (!wstio) |
79072805 |
497 | wstio = GvIO(wgv) = newIO(); |
afd9f252 |
498 | else if (wstio->ifp) |
79072805 |
499 | do_close(wgv,FALSE); |
afd9f252 |
500 | |
501 | if (pipe(fd) < 0) |
502 | goto badexit; |
503 | rstio->ifp = fdopen(fd[0], "r"); |
504 | wstio->ofp = fdopen(fd[1], "w"); |
505 | wstio->ifp = wstio->ofp; |
506 | rstio->type = '<'; |
507 | wstio->type = '>'; |
fe14fcc3 |
508 | if (!rstio->ifp || !wstio->ofp) { |
509 | if (rstio->ifp) fclose(rstio->ifp); |
510 | else close(fd[0]); |
511 | if (wstio->ofp) fclose(wstio->ofp); |
512 | else close(fd[1]); |
513 | goto badexit; |
514 | } |
afd9f252 |
515 | |
79072805 |
516 | sv_setsv(sv,&sv_yes); |
afd9f252 |
517 | return; |
518 | |
519 | badexit: |
79072805 |
520 | sv_setsv(sv,&sv_undef); |
afd9f252 |
521 | return; |
522 | } |
b1248f16 |
523 | #endif |
afd9f252 |
524 | |
a687059c |
525 | bool |
79072805 |
526 | do_close(gv,explicit) |
527 | GV *gv; |
a687059c |
528 | bool explicit; |
529 | { |
530 | bool retval = FALSE; |
79072805 |
531 | register IO *io; |
a687059c |
532 | int status; |
533 | |
79072805 |
534 | if (!gv) |
535 | gv = argvgv; |
536 | if (!gv) { |
99b89507 |
537 | errno = EBADF; |
c2ab57d4 |
538 | return FALSE; |
99b89507 |
539 | } |
79072805 |
540 | io = GvIO(gv); |
541 | if (!io) { /* never opened */ |
a687059c |
542 | if (dowarn && explicit) |
79072805 |
543 | warn("Close on unopened file <%s>",GvENAME(gv)); |
a687059c |
544 | return FALSE; |
545 | } |
79072805 |
546 | if (io->ifp) { |
547 | if (io->type == '|') { |
548 | status = my_pclose(io->ifp); |
c623bd54 |
549 | retval = (status == 0); |
b1248f16 |
550 | statusvalue = (unsigned short)status & 0xffff; |
a687059c |
551 | } |
79072805 |
552 | else if (io->type == '-') |
a687059c |
553 | retval = TRUE; |
554 | else { |
79072805 |
555 | if (io->ofp && io->ofp != io->ifp) { /* a socket */ |
556 | retval = (fclose(io->ofp) != EOF); |
557 | fclose(io->ifp); /* clear stdio, fd already closed */ |
c2ab57d4 |
558 | } |
559 | else |
79072805 |
560 | retval = (fclose(io->ifp) != EOF); |
a687059c |
561 | } |
79072805 |
562 | io->ofp = io->ifp = Nullfp; |
563 | } |
564 | if (explicit) { |
565 | io->lines = 0; |
566 | io->page = 0; |
567 | io->lines_left = io->page_len; |
a687059c |
568 | } |
79072805 |
569 | io->type = ' '; |
a687059c |
570 | return retval; |
571 | } |
572 | |
573 | bool |
79072805 |
574 | do_eof(gv) |
575 | GV *gv; |
a687059c |
576 | { |
79072805 |
577 | register IO *io; |
a687059c |
578 | int ch; |
579 | |
79072805 |
580 | io = GvIO(gv); |
a687059c |
581 | |
79072805 |
582 | if (!io) |
a687059c |
583 | return TRUE; |
584 | |
79072805 |
585 | while (io->ifp) { |
a687059c |
586 | |
587 | #ifdef STDSTDIO /* (the code works without this) */ |
79072805 |
588 | if (io->ifp->_cnt > 0) /* cheat a little, since */ |
a687059c |
589 | return FALSE; /* this is the most usual case */ |
590 | #endif |
591 | |
79072805 |
592 | ch = getc(io->ifp); |
a687059c |
593 | if (ch != EOF) { |
79072805 |
594 | (void)ungetc(ch, io->ifp); |
a687059c |
595 | return FALSE; |
596 | } |
fe14fcc3 |
597 | #ifdef STDSTDIO |
79072805 |
598 | if (io->ifp->_cnt < -1) |
599 | io->ifp->_cnt = -1; |
fe14fcc3 |
600 | #endif |
79072805 |
601 | if (gv == argvgv) { /* not necessarily a real EOF yet? */ |
602 | if (!nextargv(argvgv)) /* get another fp handy */ |
a687059c |
603 | return TRUE; |
604 | } |
605 | else |
606 | return TRUE; /* normal fp, definitely end of file */ |
607 | } |
608 | return TRUE; |
609 | } |
610 | |
611 | long |
79072805 |
612 | do_tell(gv) |
613 | GV *gv; |
a687059c |
614 | { |
79072805 |
615 | register IO *io; |
a687059c |
616 | |
79072805 |
617 | if (!gv) |
a687059c |
618 | goto phooey; |
619 | |
79072805 |
620 | io = GvIO(gv); |
621 | if (!io || !io->ifp) |
a687059c |
622 | goto phooey; |
623 | |
bee1dbe2 |
624 | #ifdef ULTRIX_STDIO_BOTCH |
79072805 |
625 | if (feof(io->ifp)) |
626 | (void)fseek (io->ifp, 0L, 2); /* ultrix 1.2 workaround */ |
bee1dbe2 |
627 | #endif |
a687059c |
628 | |
79072805 |
629 | return ftell(io->ifp); |
a687059c |
630 | |
631 | phooey: |
632 | if (dowarn) |
633 | warn("tell() on unopened file"); |
99b89507 |
634 | errno = EBADF; |
a687059c |
635 | return -1L; |
636 | } |
637 | |
638 | bool |
79072805 |
639 | do_seek(gv, pos, whence) |
640 | GV *gv; |
a687059c |
641 | long pos; |
642 | int whence; |
643 | { |
79072805 |
644 | register IO *io; |
a687059c |
645 | |
79072805 |
646 | if (!gv) |
a687059c |
647 | goto nuts; |
648 | |
79072805 |
649 | io = GvIO(gv); |
650 | if (!io || !io->ifp) |
a687059c |
651 | goto nuts; |
652 | |
bee1dbe2 |
653 | #ifdef ULTRIX_STDIO_BOTCH |
79072805 |
654 | if (feof(io->ifp)) |
655 | (void)fseek (io->ifp, 0L, 2); /* ultrix 1.2 workaround */ |
bee1dbe2 |
656 | #endif |
a687059c |
657 | |
79072805 |
658 | return fseek(io->ifp, pos, whence) >= 0; |
a687059c |
659 | |
660 | nuts: |
661 | if (dowarn) |
662 | warn("seek() on unopened file"); |
99b89507 |
663 | errno = EBADF; |
a687059c |
664 | return FALSE; |
665 | } |
666 | |
79072805 |
667 | I32 |
668 | do_ctl(optype,gv,func,argstr) |
669 | I32 optype; |
670 | GV *gv; |
671 | I32 func; |
672 | SV *argstr; |
a687059c |
673 | { |
79072805 |
674 | register IO *io; |
a687059c |
675 | register char *s; |
79072805 |
676 | I32 retval; |
a687059c |
677 | |
79072805 |
678 | if (!gv || !argstr || !(io = GvIO(gv)) || !io->ifp) { |
99b89507 |
679 | errno = EBADF; /* well, sort of... */ |
a687059c |
680 | return -1; |
99b89507 |
681 | } |
a687059c |
682 | |
79072805 |
683 | if (SvPOK(argstr) || !SvNIOK(argstr)) { |
684 | if (!SvPOK(argstr)) |
685 | s = SvPVn(argstr); |
a687059c |
686 | |
687 | #ifdef IOCPARM_MASK |
688 | #ifndef IOCPARM_LEN |
689 | #define IOCPARM_LEN(x) (((x) >> 16) & IOCPARM_MASK) |
690 | #endif |
691 | #endif |
692 | #ifdef IOCPARM_LEN |
693 | retval = IOCPARM_LEN(func); /* on BSDish systes we're safe */ |
694 | #else |
695 | retval = 256; /* otherwise guess at what's safe */ |
696 | #endif |
79072805 |
697 | if (SvCUR(argstr) < retval) { |
698 | Sv_Grow(argstr,retval+1); |
699 | SvCUR_set(argstr, retval); |
a687059c |
700 | } |
701 | |
79072805 |
702 | s = SvPV(argstr); |
703 | s[SvCUR(argstr)] = 17; /* a little sanity check here */ |
a687059c |
704 | } |
705 | else { |
79072805 |
706 | retval = SvIVn(argstr); |
bee1dbe2 |
707 | #ifdef DOSISH |
c2ab57d4 |
708 | s = (char*)(long)retval; /* ouch */ |
709 | #else |
a687059c |
710 | s = (char*)retval; /* ouch */ |
c2ab57d4 |
711 | #endif |
a687059c |
712 | } |
713 | |
714 | #ifndef lint |
79072805 |
715 | if (optype == OP_IOCTL) |
716 | retval = ioctl(fileno(io->ifp), func, s); |
a687059c |
717 | else |
bee1dbe2 |
718 | #ifdef DOSISH |
57ebbfd0 |
719 | fatal("fcntl is not implemented"); |
720 | #else |
fe14fcc3 |
721 | #ifdef HAS_FCNTL |
79072805 |
722 | retval = fcntl(fileno(io->ifp), func, s); |
a687059c |
723 | #else |
724 | fatal("fcntl is not implemented"); |
725 | #endif |
57ebbfd0 |
726 | #endif |
a687059c |
727 | #else /* lint */ |
728 | retval = 0; |
729 | #endif /* lint */ |
730 | |
79072805 |
731 | if (SvPOK(argstr)) { |
732 | if (s[SvCUR(argstr)] != 17) |
a687059c |
733 | fatal("Return value overflowed string"); |
79072805 |
734 | s[SvCUR(argstr)] = 0; /* put our null back */ |
a687059c |
735 | } |
736 | return retval; |
737 | } |
738 | |
79072805 |
739 | #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(FFt_FREESP) |
c2ab57d4 |
740 | /* code courtesy of William Kucharski */ |
fe14fcc3 |
741 | #define HAS_CHSIZE |
6eb13c3b |
742 | |
79072805 |
743 | I32 chsize(fd, length) |
744 | I32 fd; /* file descriptor */ |
6eb13c3b |
745 | off_t length; /* length to set file to */ |
746 | { |
747 | extern long lseek(); |
748 | struct flock fl; |
749 | struct stat filebuf; |
750 | |
751 | if (fstat(fd, &filebuf) < 0) |
752 | return -1; |
753 | |
754 | if (filebuf.st_size < length) { |
755 | |
756 | /* extend file length */ |
757 | |
758 | if ((lseek(fd, (length - 1), 0)) < 0) |
759 | return -1; |
760 | |
761 | /* write a "0" byte */ |
762 | |
763 | if ((write(fd, "", 1)) != 1) |
764 | return -1; |
765 | } |
766 | else { |
767 | /* truncate length */ |
768 | |
769 | fl.l_whence = 0; |
770 | fl.l_len = 0; |
771 | fl.l_start = length; |
79072805 |
772 | fl.l_type = FFt_WRLCK; /* write lock on file space */ |
6eb13c3b |
773 | |
774 | /* |
79072805 |
775 | * This relies on the UNDOCUMENTED FFt_FREESP argument to |
6eb13c3b |
776 | * fcntl(2), which truncates the file so that it ends at the |
777 | * position indicated by fl.l_start. |
778 | * |
779 | * Will minor miracles never cease? |
780 | */ |
781 | |
79072805 |
782 | if (fcntl(fd, FFt_FREESP, &fl) < 0) |
6eb13c3b |
783 | return -1; |
784 | |
785 | } |
786 | |
787 | return 0; |
788 | } |
79072805 |
789 | #endif /* FFt_FREESP */ |
ff8e2863 |
790 | |
79072805 |
791 | I32 |
792 | looks_like_number(sv) |
793 | SV *sv; |
a687059c |
794 | { |
795 | register char *s; |
796 | register char *send; |
797 | |
79072805 |
798 | if (!SvPOK(sv)) |
a687059c |
799 | return TRUE; |
79072805 |
800 | s = SvPV(sv); |
801 | send = s + SvCUR(sv); |
99b89507 |
802 | while (isSPACE(*s)) |
a687059c |
803 | s++; |
804 | if (s >= send) |
805 | return FALSE; |
806 | if (*s == '+' || *s == '-') |
807 | s++; |
99b89507 |
808 | while (isDIGIT(*s)) |
a687059c |
809 | s++; |
810 | if (s == send) |
811 | return TRUE; |
812 | if (*s == '.') |
813 | s++; |
79072805 |
814 | else if (s == SvPV(sv)) |
a687059c |
815 | return FALSE; |
99b89507 |
816 | while (isDIGIT(*s)) |
a687059c |
817 | s++; |
818 | if (s == send) |
819 | return TRUE; |
820 | if (*s == 'e' || *s == 'E') { |
821 | s++; |
822 | if (*s == '+' || *s == '-') |
823 | s++; |
99b89507 |
824 | while (isDIGIT(*s)) |
a687059c |
825 | s++; |
826 | } |
99b89507 |
827 | while (isSPACE(*s)) |
a687059c |
828 | s++; |
829 | if (s >= send) |
830 | return TRUE; |
831 | return FALSE; |
832 | } |
833 | |
834 | bool |
79072805 |
835 | do_print(sv,fp) |
836 | register SV *sv; |
a687059c |
837 | FILE *fp; |
838 | { |
839 | register char *tmps; |
79072805 |
840 | SV* tmpstr; |
a687059c |
841 | |
79072805 |
842 | /* assuming fp is checked earlier */ |
843 | if (!sv) |
844 | return TRUE; |
845 | if (ofmt) { |
846 | if (SvMAGICAL(sv)) |
847 | mg_get(sv); |
848 | if (SvIOK(sv) && SvIV(sv) != 0) { |
849 | fprintf(fp, ofmt, (double)SvIV(sv)); |
850 | return !ferror(fp); |
851 | } |
852 | if ( (SvNOK(sv) && SvNV(sv) != 0.0) |
853 | || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) { |
854 | fprintf(fp, ofmt, SvNV(sv)); |
855 | return !ferror(fp); |
856 | } |
a687059c |
857 | } |
79072805 |
858 | switch (SvTYPE(sv)) { |
859 | case SVt_NULL: |
ff8e2863 |
860 | return TRUE; |
79072805 |
861 | case SVt_REF: |
862 | fprintf(fp, "%s", sv_2pv(sv)); |
ff8e2863 |
863 | return !ferror(fp); |
79072805 |
864 | case SVt_IV: |
865 | if (SvMAGICAL(sv)) |
866 | mg_get(sv); |
867 | fprintf(fp, "%d", SvIV(sv)); |
868 | return !ferror(fp); |
869 | default: |
870 | tmps = SvPVn(sv); |
871 | break; |
ff8e2863 |
872 | } |
79072805 |
873 | if (SvCUR(sv) && (fwrite(tmps,1,SvCUR(sv),fp) == 0 || ferror(fp))) |
a687059c |
874 | return FALSE; |
79072805 |
875 | return TRUE; |
a687059c |
876 | } |
877 | |
79072805 |
878 | I32 |
879 | my_stat(ARGS) |
880 | dARGS |
a687059c |
881 | { |
79072805 |
882 | dSP; |
883 | IO *io; |
884 | |
885 | if (op->op_flags & OPf_SPECIAL) { |
886 | EXTEND(sp,1); |
887 | io = GvIO(cGVOP->op_gv); |
888 | if (io && io->ifp) { |
889 | statgv = cGVOP->op_gv; |
890 | sv_setpv(statname,""); |
891 | laststype = OP_STAT; |
892 | return (laststatval = fstat(fileno(io->ifp), &statcache)); |
a687059c |
893 | } |
894 | else { |
79072805 |
895 | if (cGVOP->op_gv == defgv) |
57ebbfd0 |
896 | return laststatval; |
a687059c |
897 | if (dowarn) |
898 | warn("Stat on unopened file <%s>", |
79072805 |
899 | GvENAME(cGVOP->op_gv)); |
900 | statgv = Nullgv; |
901 | sv_setpv(statname,""); |
57ebbfd0 |
902 | return (laststatval = -1); |
a687059c |
903 | } |
904 | } |
905 | else { |
79072805 |
906 | dPOPss; |
907 | PUTBACK; |
908 | statgv = Nullgv; |
909 | sv_setpv(statname,SvPVn(sv)); |
910 | laststype = OP_STAT; |
911 | laststatval = stat(SvPVn(sv),&statcache); |
912 | if (laststatval < 0 && dowarn && index(SvPVn(sv), '\n')) |
bee1dbe2 |
913 | warn(warn_nl, "stat"); |
914 | return laststatval; |
a687059c |
915 | } |
916 | } |
917 | |
79072805 |
918 | I32 |
919 | my_lstat(ARGS) |
920 | dARGS |
c623bd54 |
921 | { |
79072805 |
922 | dSP; |
923 | SV *sv; |
924 | if (op->op_flags & OPf_SPECIAL) { |
925 | EXTEND(sp,1); |
926 | if (cGVOP->op_gv == defgv) { |
927 | if (laststype != OP_LSTAT) |
fe14fcc3 |
928 | fatal("The stat preceding -l _ wasn't an lstat"); |
929 | return laststatval; |
930 | } |
931 | fatal("You can't use -l on a filehandle"); |
932 | } |
c623bd54 |
933 | |
79072805 |
934 | laststype = OP_LSTAT; |
935 | statgv = Nullgv; |
936 | sv = POPs; |
937 | PUTBACK; |
938 | sv_setpv(statname,SvPVn(sv)); |
fe14fcc3 |
939 | #ifdef HAS_LSTAT |
79072805 |
940 | laststatval = lstat(SvPVn(sv),&statcache); |
c623bd54 |
941 | #else |
79072805 |
942 | laststatval = stat(SvPVn(sv),&statcache); |
c623bd54 |
943 | #endif |
79072805 |
944 | if (laststatval < 0 && dowarn && index(SvPVn(sv), '\n')) |
bee1dbe2 |
945 | warn(warn_nl, "lstat"); |
946 | return laststatval; |
c623bd54 |
947 | } |
948 | |
a687059c |
949 | bool |
79072805 |
950 | do_aexec(really,mark,sp) |
951 | SV *really; |
952 | register SV **mark; |
953 | register SV **sp; |
a687059c |
954 | { |
a687059c |
955 | register char **a; |
a687059c |
956 | char *tmps; |
957 | |
79072805 |
958 | if (sp > mark) { |
959 | New(401,Argv, sp - mark + 1, char*); |
bee1dbe2 |
960 | a = Argv; |
79072805 |
961 | while (++mark <= sp) { |
962 | if (*mark) |
963 | *a++ = SvPVnx(*mark); |
a687059c |
964 | else |
965 | *a++ = ""; |
966 | } |
967 | *a = Nullch; |
bee1dbe2 |
968 | if (*Argv[0] != '/') /* will execvp use PATH? */ |
79072805 |
969 | TAINT_ENV(); /* testing IFS here is overkill, probably */ |
970 | if (really && *(tmps = SvPVn(really))) |
bee1dbe2 |
971 | execvp(tmps,Argv); |
a687059c |
972 | else |
bee1dbe2 |
973 | execvp(Argv[0],Argv); |
a687059c |
974 | } |
bee1dbe2 |
975 | do_execfree(); |
a687059c |
976 | return FALSE; |
977 | } |
978 | |
fe14fcc3 |
979 | void |
ff8e2863 |
980 | do_execfree() |
981 | { |
982 | if (Argv) { |
983 | Safefree(Argv); |
984 | Argv = Null(char **); |
985 | } |
986 | if (Cmd) { |
987 | Safefree(Cmd); |
988 | Cmd = Nullch; |
989 | } |
990 | } |
991 | |
a687059c |
992 | bool |
993 | do_exec(cmd) |
994 | char *cmd; |
995 | { |
996 | register char **a; |
997 | register char *s; |
a687059c |
998 | char flags[10]; |
999 | |
a687059c |
1000 | /* save an extra exec if possible */ |
1001 | |
bf38876a |
1002 | #ifdef CSH |
1003 | if (strnEQ(cmd,cshname,cshlen) && strnEQ(cmd+cshlen," -c",3)) { |
a687059c |
1004 | strcpy(flags,"-c"); |
bf38876a |
1005 | s = cmd+cshlen+3; |
a687059c |
1006 | if (*s == 'f') { |
1007 | s++; |
1008 | strcat(flags,"f"); |
1009 | } |
1010 | if (*s == ' ') |
1011 | s++; |
1012 | if (*s++ == '\'') { |
1013 | char *ncmd = s; |
1014 | |
1015 | while (*s) |
1016 | s++; |
1017 | if (s[-1] == '\n') |
1018 | *--s = '\0'; |
1019 | if (s[-1] == '\'') { |
1020 | *--s = '\0'; |
bf38876a |
1021 | execl(cshname,"csh", flags,ncmd,(char*)0); |
a687059c |
1022 | *s = '\''; |
1023 | return FALSE; |
1024 | } |
1025 | } |
1026 | } |
bf38876a |
1027 | #endif /* CSH */ |
a687059c |
1028 | |
1029 | /* see if there are shell metacharacters in it */ |
1030 | |
99b89507 |
1031 | /*SUPPRESS 530*/ |
1032 | for (s = cmd; *s && isALPHA(*s); s++) ; /* catch VAR=val gizmo */ |
63f2c1e1 |
1033 | if (*s == '=') |
1034 | goto doshell; |
a687059c |
1035 | for (s = cmd; *s; s++) { |
99b89507 |
1036 | if (*s != ' ' && !isALPHA(*s) && index("$&*(){}[]'\";\\|?<>~`\n",*s)) { |
a687059c |
1037 | if (*s == '\n' && !s[1]) { |
1038 | *s = '\0'; |
1039 | break; |
1040 | } |
1041 | doshell: |
1042 | execl("/bin/sh","sh","-c",cmd,(char*)0); |
1043 | return FALSE; |
1044 | } |
1045 | } |
ff8e2863 |
1046 | New(402,Argv, (s - cmd) / 2 + 2, char*); |
1047 | Cmd = nsavestr(cmd, s-cmd); |
1048 | a = Argv; |
1049 | for (s = Cmd; *s;) { |
99b89507 |
1050 | while (*s && isSPACE(*s)) s++; |
a687059c |
1051 | if (*s) |
1052 | *(a++) = s; |
99b89507 |
1053 | while (*s && !isSPACE(*s)) s++; |
a687059c |
1054 | if (*s) |
1055 | *s++ = '\0'; |
1056 | } |
1057 | *a = Nullch; |
ff8e2863 |
1058 | if (Argv[0]) { |
1059 | execvp(Argv[0],Argv); |
b1248f16 |
1060 | if (errno == ENOEXEC) { /* for system V NIH syndrome */ |
ff8e2863 |
1061 | do_execfree(); |
a687059c |
1062 | goto doshell; |
b1248f16 |
1063 | } |
a687059c |
1064 | } |
ff8e2863 |
1065 | do_execfree(); |
a687059c |
1066 | return FALSE; |
1067 | } |
1068 | |
79072805 |
1069 | I32 |
1070 | apply(type,mark,sp) |
1071 | I32 type; |
1072 | register SV **mark; |
1073 | register SV **sp; |
a687059c |
1074 | { |
79072805 |
1075 | register I32 val; |
1076 | register I32 val2; |
1077 | register I32 tot = 0; |
a687059c |
1078 | char *s; |
79072805 |
1079 | SV **oldmark = mark; |
a687059c |
1080 | |
1081 | #ifdef TAINT |
79072805 |
1082 | while (++mark <= sp) |
1083 | TAINT_IF((*mark)->sv_tainted); |
1084 | mark = oldmark; |
a687059c |
1085 | #endif |
1086 | switch (type) { |
79072805 |
1087 | case OP_CHMOD: |
1088 | TAINT_PROPER("chmod"); |
1089 | if (++mark <= sp) { |
1090 | tot = sp - mark; |
1091 | val = SvIVnx(*mark); |
1092 | while (++mark <= sp) { |
1093 | if (chmod(SvPVnx(*mark),val)) |
a687059c |
1094 | tot--; |
1095 | } |
1096 | } |
1097 | break; |
fe14fcc3 |
1098 | #ifdef HAS_CHOWN |
79072805 |
1099 | case OP_CHOWN: |
1100 | TAINT_PROPER("chown"); |
1101 | if (sp - mark > 2) { |
1102 | tot = sp - mark; |
1103 | val = SvIVnx(*++mark); |
1104 | val2 = SvIVnx(*++mark); |
1105 | while (++mark <= sp) { |
1106 | if (chown(SvPVnx(*mark),val,val2)) |
a687059c |
1107 | tot--; |
1108 | } |
1109 | } |
1110 | break; |
b1248f16 |
1111 | #endif |
fe14fcc3 |
1112 | #ifdef HAS_KILL |
79072805 |
1113 | case OP_KILL: |
1114 | TAINT_PROPER("kill"); |
1115 | s = SvPVnx(*++mark); |
1116 | tot = sp - mark; |
1117 | if (isUPPER(*s)) { |
1118 | if (*s == 'S' && s[1] == 'I' && s[2] == 'G') |
1119 | s += 3; |
1120 | if (!(val = whichsig(s))) |
1121 | fatal("Unrecognized signal name \"%s\"",s); |
1122 | } |
1123 | else |
1124 | val = SvIVnx(*mark); |
1125 | if (val < 0) { |
1126 | val = -val; |
1127 | while (++mark <= sp) { |
1128 | I32 proc = SvIVnx(*mark); |
fe14fcc3 |
1129 | #ifdef HAS_KILLPG |
79072805 |
1130 | if (killpg(proc,val)) /* BSD */ |
a687059c |
1131 | #else |
79072805 |
1132 | if (kill(-proc,val)) /* SYSV */ |
a687059c |
1133 | #endif |
79072805 |
1134 | tot--; |
a687059c |
1135 | } |
79072805 |
1136 | } |
1137 | else { |
1138 | while (++mark <= sp) { |
1139 | if (kill(SvIVnx(*mark),val)) |
1140 | tot--; |
a687059c |
1141 | } |
1142 | } |
1143 | break; |
b1248f16 |
1144 | #endif |
79072805 |
1145 | case OP_UNLINK: |
1146 | TAINT_PROPER("unlink"); |
1147 | tot = sp - mark; |
1148 | while (++mark <= sp) { |
1149 | s = SvPVnx(*mark); |
a687059c |
1150 | if (euid || unsafe) { |
1151 | if (UNLINK(s)) |
1152 | tot--; |
1153 | } |
1154 | else { /* don't let root wipe out directories without -U */ |
fe14fcc3 |
1155 | #ifdef HAS_LSTAT |
c623bd54 |
1156 | if (lstat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode)) |
a687059c |
1157 | #else |
c623bd54 |
1158 | if (stat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode)) |
a687059c |
1159 | #endif |
a687059c |
1160 | tot--; |
1161 | else { |
1162 | if (UNLINK(s)) |
1163 | tot--; |
1164 | } |
1165 | } |
1166 | } |
1167 | break; |
79072805 |
1168 | case OP_UTIME: |
1169 | TAINT_PROPER("utime"); |
1170 | if (sp - mark > 2) { |
663a0e37 |
1171 | #ifdef I_UTIME |
1172 | struct utimbuf utbuf; |
1173 | #else |
a687059c |
1174 | struct { |
663a0e37 |
1175 | long actime; |
1176 | long modtime; |
a687059c |
1177 | } utbuf; |
663a0e37 |
1178 | #endif |
a687059c |
1179 | |
afd9f252 |
1180 | Zero(&utbuf, sizeof utbuf, char); |
79072805 |
1181 | utbuf.actime = SvIVnx(*++mark); /* time accessed */ |
1182 | utbuf.modtime = SvIVnx(*++mark); /* time modified */ |
1183 | tot = sp - mark; |
1184 | while (++mark <= sp) { |
1185 | if (utime(SvPVnx(*mark),&utbuf)) |
a687059c |
1186 | tot--; |
1187 | } |
a687059c |
1188 | } |
1189 | else |
79072805 |
1190 | tot = 0; |
a687059c |
1191 | break; |
1192 | } |
1193 | return tot; |
1194 | } |
1195 | |
1196 | /* Do the permissions allow some operation? Assumes statcache already set. */ |
1197 | |
79072805 |
1198 | I32 |
a687059c |
1199 | cando(bit, effective, statbufp) |
79072805 |
1200 | I32 bit; |
1201 | I32 effective; |
a687059c |
1202 | register struct stat *statbufp; |
1203 | { |
bee1dbe2 |
1204 | #ifdef DOSISH |
fe14fcc3 |
1205 | /* [Comments and code from Len Reed] |
1206 | * MS-DOS "user" is similar to UNIX's "superuser," but can't write |
1207 | * to write-protected files. The execute permission bit is set |
1208 | * by the Miscrosoft C library stat() function for the following: |
1209 | * .exe files |
1210 | * .com files |
1211 | * .bat files |
1212 | * directories |
1213 | * All files and directories are readable. |
1214 | * Directories and special files, e.g. "CON", cannot be |
1215 | * write-protected. |
1216 | * [Comment by Tom Dinger -- a directory can have the write-protect |
1217 | * bit set in the file system, but DOS permits changes to |
1218 | * the directory anyway. In addition, all bets are off |
1219 | * here for networked software, such as Novell and |
1220 | * Sun's PC-NFS.] |
1221 | */ |
1222 | |
bee1dbe2 |
1223 | /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat |
1224 | * too so it will actually look into the files for magic numbers |
1225 | */ |
fe14fcc3 |
1226 | return (bit & statbufp->st_mode) ? TRUE : FALSE; |
1227 | |
1228 | #else /* ! MSDOS */ |
a687059c |
1229 | if ((effective ? euid : uid) == 0) { /* root is special */ |
c623bd54 |
1230 | if (bit == S_IXUSR) { |
1231 | if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode)) |
a687059c |
1232 | return TRUE; |
1233 | } |
1234 | else |
1235 | return TRUE; /* root reads and writes anything */ |
1236 | return FALSE; |
1237 | } |
1238 | if (statbufp->st_uid == (effective ? euid : uid) ) { |
1239 | if (statbufp->st_mode & bit) |
1240 | return TRUE; /* ok as "user" */ |
1241 | } |
79072805 |
1242 | else if (ingroup((I32)statbufp->st_gid,effective)) { |
a687059c |
1243 | if (statbufp->st_mode & bit >> 3) |
1244 | return TRUE; /* ok as "group" */ |
1245 | } |
1246 | else if (statbufp->st_mode & bit >> 6) |
1247 | return TRUE; /* ok as "other" */ |
1248 | return FALSE; |
fe14fcc3 |
1249 | #endif /* ! MSDOS */ |
a687059c |
1250 | } |
1251 | |
79072805 |
1252 | I32 |
a687059c |
1253 | ingroup(testgid,effective) |
79072805 |
1254 | I32 testgid; |
1255 | I32 effective; |
a687059c |
1256 | { |
1257 | if (testgid == (effective ? egid : gid)) |
1258 | return TRUE; |
fe14fcc3 |
1259 | #ifdef HAS_GETGROUPS |
a687059c |
1260 | #ifndef NGROUPS |
1261 | #define NGROUPS 32 |
1262 | #endif |
1263 | { |
1c3d792e |
1264 | GROUPSTYPE gary[NGROUPS]; |
79072805 |
1265 | I32 anum; |
a687059c |
1266 | |
1267 | anum = getgroups(NGROUPS,gary); |
1268 | while (--anum >= 0) |
1269 | if (gary[anum] == testgid) |
1270 | return TRUE; |
1271 | } |
1272 | #endif |
1273 | return FALSE; |
1274 | } |
c2ab57d4 |
1275 | |
fe14fcc3 |
1276 | #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM) |
c2ab57d4 |
1277 | |
79072805 |
1278 | I32 |
1279 | do_ipcget(optype, mark, sp) |
1280 | I32 optype; |
1281 | SV **mark; |
1282 | SV **sp; |
c2ab57d4 |
1283 | { |
c2ab57d4 |
1284 | key_t key; |
79072805 |
1285 | I32 n, flags; |
c2ab57d4 |
1286 | |
79072805 |
1287 | key = (key_t)SvNVnx(*++mark); |
1288 | n = (optype == OP_MSGGET) ? 0 : SvIVnx(*++mark); |
1289 | flags = SvIVnx(*++mark); |
c2ab57d4 |
1290 | errno = 0; |
1291 | switch (optype) |
1292 | { |
fe14fcc3 |
1293 | #ifdef HAS_MSG |
79072805 |
1294 | case OP_MSGGET: |
c2ab57d4 |
1295 | return msgget(key, flags); |
e5d73d77 |
1296 | #endif |
fe14fcc3 |
1297 | #ifdef HAS_SEM |
79072805 |
1298 | case OP_SEMGET: |
c2ab57d4 |
1299 | return semget(key, n, flags); |
e5d73d77 |
1300 | #endif |
fe14fcc3 |
1301 | #ifdef HAS_SHM |
79072805 |
1302 | case OP_SHMGET: |
c2ab57d4 |
1303 | return shmget(key, n, flags); |
e5d73d77 |
1304 | #endif |
fe14fcc3 |
1305 | #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
e5d73d77 |
1306 | default: |
79072805 |
1307 | fatal("%s not implemented", op_name[optype]); |
e5d73d77 |
1308 | #endif |
c2ab57d4 |
1309 | } |
1310 | return -1; /* should never happen */ |
1311 | } |
1312 | |
79072805 |
1313 | I32 |
1314 | do_ipcctl(optype, mark, sp) |
1315 | I32 optype; |
1316 | SV **mark; |
1317 | SV **sp; |
c2ab57d4 |
1318 | { |
79072805 |
1319 | SV *astr; |
c2ab57d4 |
1320 | char *a; |
79072805 |
1321 | I32 id, n, cmd, infosize, getinfo, ret; |
c2ab57d4 |
1322 | |
79072805 |
1323 | id = SvIVnx(*++mark); |
1324 | n = (optype == OP_SEMCTL) ? SvIVnx(*++mark) : 0; |
1325 | cmd = SvIVnx(*++mark); |
1326 | astr = *++mark; |
c2ab57d4 |
1327 | infosize = 0; |
1328 | getinfo = (cmd == IPC_STAT); |
1329 | |
1330 | switch (optype) |
1331 | { |
fe14fcc3 |
1332 | #ifdef HAS_MSG |
79072805 |
1333 | case OP_MSGCTL: |
c2ab57d4 |
1334 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1335 | infosize = sizeof(struct msqid_ds); |
1336 | break; |
e5d73d77 |
1337 | #endif |
fe14fcc3 |
1338 | #ifdef HAS_SHM |
79072805 |
1339 | case OP_SHMCTL: |
c2ab57d4 |
1340 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1341 | infosize = sizeof(struct shmid_ds); |
1342 | break; |
e5d73d77 |
1343 | #endif |
fe14fcc3 |
1344 | #ifdef HAS_SEM |
79072805 |
1345 | case OP_SEMCTL: |
c2ab57d4 |
1346 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1347 | infosize = sizeof(struct semid_ds); |
1348 | else if (cmd == GETALL || cmd == SETALL) |
1349 | { |
1350 | struct semid_ds semds; |
1351 | if (semctl(id, 0, IPC_STAT, &semds) == -1) |
1352 | return -1; |
1353 | getinfo = (cmd == GETALL); |
6e21c824 |
1354 | infosize = semds.sem_nsems * sizeof(short); |
1355 | /* "short" is technically wrong but much more portable |
1356 | than guessing about u_?short(_t)? */ |
c2ab57d4 |
1357 | } |
1358 | break; |
e5d73d77 |
1359 | #endif |
fe14fcc3 |
1360 | #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
e5d73d77 |
1361 | default: |
79072805 |
1362 | fatal("%s not implemented", op_name[optype]); |
e5d73d77 |
1363 | #endif |
c2ab57d4 |
1364 | } |
1365 | |
1366 | if (infosize) |
1367 | { |
1368 | if (getinfo) |
1369 | { |
79072805 |
1370 | SvGROW(astr, infosize+1); |
1371 | a = SvPVn(astr); |
c2ab57d4 |
1372 | } |
1373 | else |
1374 | { |
79072805 |
1375 | a = SvPVn(astr); |
1376 | if (SvCUR(astr) != infosize) |
c2ab57d4 |
1377 | { |
1378 | errno = EINVAL; |
1379 | return -1; |
1380 | } |
1381 | } |
1382 | } |
1383 | else |
1384 | { |
79072805 |
1385 | I32 i = SvIVn(astr); |
c2ab57d4 |
1386 | a = (char *)i; /* ouch */ |
1387 | } |
1388 | errno = 0; |
1389 | switch (optype) |
1390 | { |
fe14fcc3 |
1391 | #ifdef HAS_MSG |
79072805 |
1392 | case OP_MSGCTL: |
bee1dbe2 |
1393 | ret = msgctl(id, cmd, (struct msqid_ds *)a); |
c2ab57d4 |
1394 | break; |
e5d73d77 |
1395 | #endif |
fe14fcc3 |
1396 | #ifdef HAS_SEM |
79072805 |
1397 | case OP_SEMCTL: |
1398 | ret = semctl(id, n, cmd, (struct semid_ds *)a); |
c2ab57d4 |
1399 | break; |
e5d73d77 |
1400 | #endif |
fe14fcc3 |
1401 | #ifdef HAS_SHM |
79072805 |
1402 | case OP_SHMCTL: |
bee1dbe2 |
1403 | ret = shmctl(id, cmd, (struct shmid_ds *)a); |
c2ab57d4 |
1404 | break; |
e5d73d77 |
1405 | #endif |
c2ab57d4 |
1406 | } |
1407 | if (getinfo && ret >= 0) { |
79072805 |
1408 | SvCUR_set(astr, infosize); |
1409 | *SvEND(astr) = '\0'; |
c2ab57d4 |
1410 | } |
1411 | return ret; |
1412 | } |
1413 | |
79072805 |
1414 | I32 |
1415 | do_msgsnd(mark, sp) |
1416 | SV **mark; |
1417 | SV **sp; |
c2ab57d4 |
1418 | { |
fe14fcc3 |
1419 | #ifdef HAS_MSG |
79072805 |
1420 | SV *mstr; |
c2ab57d4 |
1421 | char *mbuf; |
79072805 |
1422 | I32 id, msize, flags; |
c2ab57d4 |
1423 | |
79072805 |
1424 | id = SvIVnx(*++mark); |
1425 | mstr = *++mark; |
1426 | flags = SvIVnx(*++mark); |
1427 | mbuf = SvPVn(mstr); |
1428 | if ((msize = SvCUR(mstr) - sizeof(long)) < 0) { |
c2ab57d4 |
1429 | errno = EINVAL; |
1430 | return -1; |
1431 | } |
1432 | errno = 0; |
bee1dbe2 |
1433 | return msgsnd(id, (struct msgbuf *)mbuf, msize, flags); |
e5d73d77 |
1434 | #else |
1435 | fatal("msgsnd not implemented"); |
1436 | #endif |
c2ab57d4 |
1437 | } |
1438 | |
79072805 |
1439 | I32 |
1440 | do_msgrcv(mark, sp) |
1441 | SV **mark; |
1442 | SV **sp; |
c2ab57d4 |
1443 | { |
fe14fcc3 |
1444 | #ifdef HAS_MSG |
79072805 |
1445 | SV *mstr; |
c2ab57d4 |
1446 | char *mbuf; |
1447 | long mtype; |
79072805 |
1448 | I32 id, msize, flags, ret; |
1449 | |
1450 | id = SvIVnx(*++mark); |
1451 | mstr = *++mark; |
1452 | msize = SvIVnx(*++mark); |
1453 | mtype = (long)SvIVnx(*++mark); |
1454 | flags = SvIVnx(*++mark); |
1455 | mbuf = SvPVn(mstr); |
1456 | if (SvCUR(mstr) < sizeof(long)+msize+1) { |
1457 | SvGROW(mstr, sizeof(long)+msize+1); |
1458 | mbuf = SvPVn(mstr); |
c2ab57d4 |
1459 | } |
1460 | errno = 0; |
bee1dbe2 |
1461 | ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags); |
c2ab57d4 |
1462 | if (ret >= 0) { |
79072805 |
1463 | SvCUR_set(mstr, sizeof(long)+ret); |
1464 | *SvEND(mstr) = '\0'; |
c2ab57d4 |
1465 | } |
1466 | return ret; |
e5d73d77 |
1467 | #else |
1468 | fatal("msgrcv not implemented"); |
1469 | #endif |
c2ab57d4 |
1470 | } |
1471 | |
79072805 |
1472 | I32 |
1473 | do_semop(mark, sp) |
1474 | SV **mark; |
1475 | SV **sp; |
c2ab57d4 |
1476 | { |
fe14fcc3 |
1477 | #ifdef HAS_SEM |
79072805 |
1478 | SV *opstr; |
c2ab57d4 |
1479 | char *opbuf; |
79072805 |
1480 | I32 id, opsize; |
c2ab57d4 |
1481 | |
79072805 |
1482 | id = SvIVnx(*++mark); |
1483 | opstr = *++mark; |
1484 | opbuf = SvPVn(opstr); |
1485 | opsize = SvCUR(opstr); |
c2ab57d4 |
1486 | if (opsize < sizeof(struct sembuf) |
1487 | || (opsize % sizeof(struct sembuf)) != 0) { |
1488 | errno = EINVAL; |
1489 | return -1; |
1490 | } |
1491 | errno = 0; |
6e21c824 |
1492 | return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf)); |
e5d73d77 |
1493 | #else |
1494 | fatal("semop not implemented"); |
1495 | #endif |
c2ab57d4 |
1496 | } |
1497 | |
79072805 |
1498 | I32 |
1499 | do_shmio(optype, mark, sp) |
1500 | I32 optype; |
1501 | SV **mark; |
1502 | SV **sp; |
c2ab57d4 |
1503 | { |
fe14fcc3 |
1504 | #ifdef HAS_SHM |
79072805 |
1505 | SV *mstr; |
c2ab57d4 |
1506 | char *mbuf, *shm; |
79072805 |
1507 | I32 id, mpos, msize; |
c2ab57d4 |
1508 | struct shmid_ds shmds; |
6e21c824 |
1509 | #ifndef VOIDSHMAT |
c2ab57d4 |
1510 | extern char *shmat(); |
6e21c824 |
1511 | #endif |
c2ab57d4 |
1512 | |
79072805 |
1513 | id = SvIVnx(*++mark); |
1514 | mstr = *++mark; |
1515 | mpos = SvIVnx(*++mark); |
1516 | msize = SvIVnx(*++mark); |
c2ab57d4 |
1517 | errno = 0; |
1518 | if (shmctl(id, IPC_STAT, &shmds) == -1) |
1519 | return -1; |
1520 | if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) { |
1521 | errno = EFAULT; /* can't do as caller requested */ |
1522 | return -1; |
1523 | } |
79072805 |
1524 | shm = (char*)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0); |
c2ab57d4 |
1525 | if (shm == (char *)-1) /* I hate System V IPC, I really do */ |
1526 | return -1; |
79072805 |
1527 | mbuf = SvPVn(mstr); |
1528 | if (optype == OP_SHMREAD) { |
1529 | if (SvCUR(mstr) < msize) { |
1530 | SvGROW(mstr, msize+1); |
1531 | mbuf = SvPVn(mstr); |
c2ab57d4 |
1532 | } |
bee1dbe2 |
1533 | Copy(shm + mpos, mbuf, msize, char); |
79072805 |
1534 | SvCUR_set(mstr, msize); |
1535 | *SvEND(mstr) = '\0'; |
c2ab57d4 |
1536 | } |
1537 | else { |
79072805 |
1538 | I32 n; |
c2ab57d4 |
1539 | |
79072805 |
1540 | if ((n = SvCUR(mstr)) > msize) |
c2ab57d4 |
1541 | n = msize; |
bee1dbe2 |
1542 | Copy(mbuf, shm + mpos, n, char); |
c2ab57d4 |
1543 | if (n < msize) |
bee1dbe2 |
1544 | memzero(shm + mpos + n, msize - n); |
c2ab57d4 |
1545 | } |
1546 | return shmdt(shm); |
e5d73d77 |
1547 | #else |
1548 | fatal("shm I/O not implemented"); |
1549 | #endif |
c2ab57d4 |
1550 | } |
1551 | |
fe14fcc3 |
1552 | #endif /* SYSV IPC */ |