Commit | Line | Data |
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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 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 LW |
7 | * |
8 | * $Log: doio.c,v $ | |
79072805 LW |
9 | * Revision 4.1 92/08/07 17:19:42 lwall |
10 | * Stage 6 Snapshot | |
11 | * | |
faf8582f LW |
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 LW |
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 LW |
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 LW |
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 LW |
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 LW |
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 LW |
49 | * Revision 4.0 91/03/20 01:07:06 lwall |
50 | * 4.0 baseline. | |
a687059c LW |
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 LW |
66 | #include <sys/shm.h> |
67 | #endif | |
e5d73d77 | 68 | #endif |
c2ab57d4 | 69 | |
663a0e37 LW |
70 | #ifdef I_UTIME |
71 | #include <utime.h> | |
72 | #endif | |
ff8e2863 LW |
73 | #ifdef I_FCNTL |
74 | #include <fcntl.h> | |
75 | #endif | |
fe14fcc3 LW |
76 | #ifdef I_SYS_FILE |
77 | #include <sys/file.h> | |
78 | #endif | |
a687059c LW |
79 | |
80 | bool | |
79072805 LW |
81 | do_open(gv,name,len) |
82 | GV *gv; | |
a687059c | 83 | register char *name; |
79072805 | 84 | I32 len; |
a687059c LW |
85 | { |
86 | FILE *fp; | |
79072805 | 87 | register IO *io = GvIO(gv); |
a687059c LW |
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 LW |
93 | FILE *saveifp = Nullfp; |
94 | FILE *saveofp = Nullfp; | |
95 | char savetype = ' '; | |
a687059c | 96 | |
bee1dbe2 | 97 | mode[0] = mode[1] = mode[2] = '\0'; |
a687059c LW |
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 LW |
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 LW |
109 | saveifp = io->ifp; |
110 | saveofp = io->ofp; | |
111 | savetype = io->type; | |
6e21c824 LW |
112 | result = 0; |
113 | } | |
79072805 LW |
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 LW |
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 LW |
128 | GvENAME(gv)); |
129 | io->ofp = io->ifp = Nullfp; | |
a687059c LW |
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 LW |
142 | /*SUPPRESS 530*/ |
143 | for (name++; isSPACE(*name); name++) ; | |
79072805 LW |
144 | if (strNE(name,"-")) |
145 | TAINT_ENV(); | |
146 | TAINT_PROPER("piped open"); | |
147 | fp = my_popen(name,"w"); | |
a687059c LW |
148 | writing = 1; |
149 | } | |
a687059c | 150 | else if (*name == '>') { |
79072805 | 151 | TAINT_PROPER("open"); |
bf38876a LW |
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 LW |
160 | if (*name == '&') { |
161 | duplicity: | |
162 | name++; | |
99b89507 | 163 | while (isSPACE(*name)) |
bf38876a | 164 | name++; |
99b89507 | 165 | if (isDIGIT(*name)) |
bf38876a LW |
166 | fd = atoi(name); |
167 | else { | |
79072805 LW |
168 | gv = gv_fetchpv(name,FALSE); |
169 | if (!gv || !GvIO(gv)) { | |
6e21c824 LW |
170 | #ifdef EINVAL |
171 | errno = EINVAL; | |
172 | #endif | |
173 | goto say_false; | |
174 | } | |
79072805 LW |
175 | if (GvIO(gv) && GvIO(gv)->ifp) { |
176 | fd = fileno(GvIO(gv)->ifp); | |
177 | if (GvIO(gv)->type == 's') | |
178 | io->type = 's'; | |
bf38876a LW |
179 | } |
180 | else | |
181 | fd = -1; | |
182 | } | |
fe14fcc3 LW |
183 | if (!(fp = fdopen(fd = dup(fd),mode))) { |
184 | close(fd); | |
185 | } | |
bf38876a LW |
186 | } |
187 | else { | |
99b89507 | 188 | while (isSPACE(*name)) |
bf38876a LW |
189 | name++; |
190 | if (strEQ(name,"-")) { | |
191 | fp = stdout; | |
79072805 | 192 | io->type = '-'; |
bf38876a LW |
193 | } |
194 | else { | |
195 | fp = fopen(name,mode); | |
196 | } | |
197 | } | |
a687059c LW |
198 | } |
199 | else { | |
200 | if (*name == '<') { | |
bf38876a LW |
201 | mode[0] = 'r'; |
202 | name++; | |
99b89507 | 203 | while (isSPACE(*name)) |
bf38876a LW |
204 | name++; |
205 | if (*name == '&') | |
206 | goto duplicity; | |
a687059c LW |
207 | if (strEQ(name,"-")) { |
208 | fp = stdin; | |
79072805 | 209 | io->type = '-'; |
a687059c | 210 | } |
bf38876a | 211 | else |
a687059c | 212 | fp = fopen(name,mode); |
a687059c LW |
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 LW |
218 | /*SUPPRESS 530*/ |
219 | for (; isSPACE(*name); name++) ; | |
79072805 LW |
220 | if (strNE(name,"-")) |
221 | TAINT_ENV(); | |
222 | TAINT_PROPER("piped open"); | |
223 | fp = my_popen(name,"r"); | |
224 | io->type = '|'; | |
a687059c LW |
225 | } |
226 | else { | |
79072805 | 227 | io->type = '<'; |
99b89507 LW |
228 | /*SUPPRESS 530*/ |
229 | for (; isSPACE(*name); name++) ; | |
a687059c LW |
230 | if (strEQ(name,"-")) { |
231 | fp = stdin; | |
79072805 | 232 | io->type = '-'; |
a687059c LW |
233 | } |
234 | else | |
235 | fp = fopen(name,"r"); | |
236 | } | |
237 | } | |
bee1dbe2 | 238 | if (!fp) { |
93a17b20 | 239 | if (dowarn && io->type == '<' && strchr(name, '\n')) |
bee1dbe2 LW |
240 | warn(warn_nl, "open"); |
241 | Safefree(myname); | |
6e21c824 | 242 | goto say_false; |
bee1dbe2 LW |
243 | } |
244 | Safefree(myname); | |
79072805 LW |
245 | if (io->type && |
246 | io->type != '|' && io->type != '-') { | |
a687059c LW |
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 LW |
253 | #ifdef HAS_SOCKET |
254 | else if ( | |
c623bd54 | 255 | #ifdef S_IFMT |
99b89507 LW |
256 | !(statbuf.st_mode & S_IFMT) |
257 | #else | |
258 | !statbuf.st_mode | |
259 | #endif | |
260 | ) { | |
79072805 | 261 | I32 buflen = sizeof tokenbuf; |
bee1dbe2 LW |
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 LW |
265 | /* but some return 0 for streams too, sigh */ |
266 | } | |
bf38876a | 267 | #endif |
a687059c | 268 | } |
6e21c824 LW |
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 LW |
275 | if (fd > 2) |
276 | Safefree(saveofp); | |
6e21c824 LW |
277 | } |
278 | } | |
279 | if (fd != fileno(fp)) { | |
bee1dbe2 | 280 | int pid; |
79072805 | 281 | SV *sv; |
bee1dbe2 | 282 | |
6e21c824 | 283 | dup2(fileno(fp), fd); |
79072805 LW |
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 LW |
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 LW |
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 LW |
310 | } |
311 | else | |
79072805 | 312 | io->ofp = fp; |
bf38876a | 313 | } |
a687059c | 314 | return TRUE; |
6e21c824 LW |
315 | |
316 | say_false: | |
79072805 LW |
317 | io->ifp = saveifp; |
318 | io->ofp = saveofp; | |
319 | io->type = savetype; | |
6e21c824 | 320 | return FALSE; |
a687059c LW |
321 | } |
322 | ||
323 | FILE * | |
79072805 LW |
324 | nextargv(gv) |
325 | register GV *gv; | |
a687059c | 326 | { |
79072805 | 327 | register SV *sv; |
99b89507 | 328 | #ifndef FLEXFILENAMES |
c623bd54 LW |
329 | int filedev; |
330 | int fileino; | |
99b89507 | 331 | #endif |
c623bd54 LW |
332 | int fileuid; |
333 | int filegid; | |
fe14fcc3 | 334 | |
79072805 LW |
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 LW |
339 | #ifdef HAS_FCHMOD |
340 | (void)fchmod(lastfd,filemode); | |
341 | #else | |
342 | (void)chmod(oldname,filemode); | |
343 | #endif | |
344 | } | |
345 | filemode = 0; | |
79072805 LW |
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 LW |
355 | sv_free(sv); |
356 | defoutgv = gv_fetchpv("STDOUT",TRUE); | |
357 | return GvIO(gv)->ifp; | |
c623bd54 | 358 | } |
99b89507 | 359 | #ifndef FLEXFILENAMES |
c623bd54 LW |
360 | filedev = statbuf.st_dev; |
361 | fileino = statbuf.st_ino; | |
99b89507 | 362 | #endif |
a687059c LW |
363 | filemode = statbuf.st_mode; |
364 | fileuid = statbuf.st_uid; | |
365 | filegid = statbuf.st_gid; | |
c623bd54 LW |
366 | if (!S_ISREG(filemode)) { |
367 | warn("Can't do inplace edit: %s is not a regular file", | |
368 | oldname ); | |
79072805 LW |
369 | do_close(gv,FALSE); |
370 | sv_free(sv); | |
c623bd54 LW |
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 LW |
381 | && statbuf.st_dev == filedev |
382 | && statbuf.st_ino == fileino ) { | |
383 | warn("Can't do inplace edit: %s > 14 characters", | |
79072805 LW |
384 | SvPV(sv) ); |
385 | do_close(gv,FALSE); | |
386 | sv_free(sv); | |
c623bd54 LW |
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 LW |
394 | oldname, SvPV(sv), strerror(errno) ); |
395 | do_close(gv,FALSE); | |
396 | sv_free(sv); | |
c623bd54 LW |
397 | continue; |
398 | } | |
a687059c | 399 | #else |
79072805 LW |
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 LW |
404 | #endif /* MSDOS */ |
405 | #else | |
79072805 LW |
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 LW |
409 | oldname, SvPV(sv), strerror(errno) ); |
410 | do_close(gv,FALSE); | |
411 | sv_free(sv); | |
c623bd54 LW |
412 | continue; |
413 | } | |
a687059c LW |
414 | (void)UNLINK(oldname); |
415 | #endif | |
416 | } | |
417 | else { | |
bee1dbe2 | 418 | #ifndef DOSISH |
fe14fcc3 LW |
419 | if (UNLINK(oldname) < 0) { |
420 | warn("Can't rename %s to %s: %s, skipping file", | |
79072805 LW |
421 | oldname, SvPV(sv), strerror(errno) ); |
422 | do_close(gv,FALSE); | |
423 | sv_free(sv); | |
fe14fcc3 LW |
424 | continue; |
425 | } | |
ff8e2863 LW |
426 | #else |
427 | fatal("Can't do inplace edit without backup"); | |
428 | #endif | |
a687059c LW |
429 | } |
430 | ||
79072805 LW |
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 LW |
435 | warn("Can't do inplace edit on %s: %s", |
436 | oldname, strerror(errno) ); | |
79072805 LW |
437 | do_close(gv,FALSE); |
438 | sv_free(sv); | |
fe14fcc3 LW |
439 | continue; |
440 | } | |
79072805 LW |
441 | defoutgv = argvoutgv; |
442 | lastfd = fileno(GvIO(argvoutgv)->ifp); | |
fe14fcc3 LW |
443 | (void)fstat(lastfd,&statbuf); |
444 | #ifdef HAS_FCHMOD | |
445 | (void)fchmod(lastfd,filemode); | |
a687059c LW |
446 | #else |
447 | (void)chmod(oldname,filemode); | |
448 | #endif | |
fe14fcc3 LW |
449 | if (fileuid != statbuf.st_uid || filegid != statbuf.st_gid) { |
450 | #ifdef HAS_FCHOWN | |
451 | (void)fchown(lastfd,fileuid,filegid); | |
a687059c | 452 | #else |
fe14fcc3 LW |
453 | #ifdef HAS_CHOWN |
454 | (void)chown(oldname,fileuid,filegid); | |
a687059c | 455 | #endif |
b1248f16 | 456 | #endif |
fe14fcc3 | 457 | } |
a687059c | 458 | } |
79072805 LW |
459 | sv_free(sv); |
460 | return GvIO(gv)->ifp; | |
a687059c LW |
461 | } |
462 | else | |
79072805 LW |
463 | fprintf(stderr,"Can't open %s: %s\n",SvPVn(sv), strerror(errno)); |
464 | sv_free(sv); | |
a687059c LW |
465 | } |
466 | if (inplace) { | |
79072805 LW |
467 | (void)do_close(argvoutgv,FALSE); |
468 | defoutgv = gv_fetchpv("STDOUT",TRUE); | |
a687059c LW |
469 | } |
470 | return Nullfp; | |
471 | } | |
472 | ||
fe14fcc3 | 473 | #ifdef HAS_PIPE |
afd9f252 | 474 | void |
79072805 LW |
475 | do_pipe(sv, rgv, wgv) |
476 | SV *sv; | |
477 | GV *rgv; | |
478 | GV *wgv; | |
afd9f252 | 479 | { |
79072805 LW |
480 | register IO *rstio; |
481 | register IO *wstio; | |
afd9f252 LW |
482 | int fd[2]; |
483 | ||
79072805 | 484 | if (!rgv) |
afd9f252 | 485 | goto badexit; |
79072805 | 486 | if (!wgv) |
afd9f252 LW |
487 | goto badexit; |
488 | ||
79072805 LW |
489 | rstio = GvIO(rgv); |
490 | wstio = GvIO(wgv); | |
afd9f252 LW |
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 LW |
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 LW |
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 LW |
517 | return; |
518 | ||
519 | badexit: | |
79072805 | 520 | sv_setsv(sv,&sv_undef); |
afd9f252 LW |
521 | return; |
522 | } | |
b1248f16 | 523 | #endif |
afd9f252 | 524 | |
a687059c | 525 | bool |
79072805 LW |
526 | do_close(gv,explicit) |
527 | GV *gv; | |
a687059c LW |
528 | bool explicit; |
529 | { | |
530 | bool retval = FALSE; | |
79072805 | 531 | register IO *io; |
a687059c LW |
532 | int status; |
533 | ||
79072805 LW |
534 | if (!gv) |
535 | gv = argvgv; | |
536 | if (!gv) { | |
99b89507 | 537 | errno = EBADF; |
c2ab57d4 | 538 | return FALSE; |
99b89507 | 539 | } |
79072805 LW |
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 LW |
544 | return FALSE; |
545 | } | |
79072805 LW |
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 LW |
553 | retval = TRUE; |
554 | else { | |
79072805 LW |
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 LW |
558 | } |
559 | else | |
79072805 | 560 | retval = (fclose(io->ifp) != EOF); |
a687059c | 561 | } |
79072805 LW |
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 LW |
570 | return retval; |
571 | } | |
572 | ||
573 | bool | |
79072805 LW |
574 | do_eof(gv) |
575 | GV *gv; | |
a687059c | 576 | { |
79072805 | 577 | register IO *io; |
a687059c LW |
578 | int ch; |
579 | ||
79072805 | 580 | io = GvIO(gv); |
a687059c | 581 | |
79072805 | 582 | if (!io) |
a687059c LW |
583 | return TRUE; |
584 | ||
79072805 | 585 | while (io->ifp) { |
a687059c LW |
586 | |
587 | #ifdef STDSTDIO /* (the code works without this) */ | |
79072805 | 588 | if (io->ifp->_cnt > 0) /* cheat a little, since */ |
a687059c LW |
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 LW |
595 | return FALSE; |
596 | } | |
fe14fcc3 | 597 | #ifdef STDSTDIO |
79072805 LW |
598 | if (io->ifp->_cnt < -1) |
599 | io->ifp->_cnt = -1; | |
fe14fcc3 | 600 | #endif |
79072805 LW |
601 | if (gv == argvgv) { /* not necessarily a real EOF yet? */ |
602 | if (!nextargv(argvgv)) /* get another fp handy */ | |
a687059c LW |
603 | return TRUE; |
604 | } | |
605 | else | |
606 | return TRUE; /* normal fp, definitely end of file */ | |
607 | } | |
608 | return TRUE; | |
609 | } | |
610 | ||
611 | long | |
79072805 LW |
612 | do_tell(gv) |
613 | GV *gv; | |
a687059c | 614 | { |
79072805 | 615 | register IO *io; |
a687059c | 616 | |
79072805 | 617 | if (!gv) |
a687059c LW |
618 | goto phooey; |
619 | ||
79072805 LW |
620 | io = GvIO(gv); |
621 | if (!io || !io->ifp) | |
a687059c LW |
622 | goto phooey; |
623 | ||
bee1dbe2 | 624 | #ifdef ULTRIX_STDIO_BOTCH |
79072805 LW |
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 LW |
630 | |
631 | phooey: | |
632 | if (dowarn) | |
633 | warn("tell() on unopened file"); | |
99b89507 | 634 | errno = EBADF; |
a687059c LW |
635 | return -1L; |
636 | } | |
637 | ||
638 | bool | |
79072805 LW |
639 | do_seek(gv, pos, whence) |
640 | GV *gv; | |
a687059c LW |
641 | long pos; |
642 | int whence; | |
643 | { | |
79072805 | 644 | register IO *io; |
a687059c | 645 | |
79072805 | 646 | if (!gv) |
a687059c LW |
647 | goto nuts; |
648 | ||
79072805 LW |
649 | io = GvIO(gv); |
650 | if (!io || !io->ifp) | |
a687059c LW |
651 | goto nuts; |
652 | ||
bee1dbe2 | 653 | #ifdef ULTRIX_STDIO_BOTCH |
79072805 LW |
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 LW |
659 | |
660 | nuts: | |
661 | if (dowarn) | |
662 | warn("seek() on unopened file"); | |
99b89507 | 663 | errno = EBADF; |
a687059c LW |
664 | return FALSE; |
665 | } | |
666 | ||
79072805 LW |
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 LW |
683 | if (SvPOK(argstr) || !SvNIOK(argstr)) { |
684 | if (!SvPOK(argstr)) | |
685 | s = SvPVn(argstr); | |
a687059c LW |
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 LW |
697 | if (SvCUR(argstr) < retval) { |
698 | Sv_Grow(argstr,retval+1); | |
699 | SvCUR_set(argstr, retval); | |
a687059c LW |
700 | } |
701 | ||
79072805 LW |
702 | s = SvPV(argstr); |
703 | s[SvCUR(argstr)] = 17; /* a little sanity check here */ | |
a687059c LW |
704 | } |
705 | else { | |
79072805 | 706 | retval = SvIVn(argstr); |
bee1dbe2 | 707 | #ifdef DOSISH |
c2ab57d4 LW |
708 | s = (char*)(long)retval; /* ouch */ |
709 | #else | |
a687059c | 710 | s = (char*)retval; /* ouch */ |
c2ab57d4 | 711 | #endif |
a687059c LW |
712 | } |
713 | ||
714 | #ifndef lint | |
79072805 LW |
715 | if (optype == OP_IOCTL) |
716 | retval = ioctl(fileno(io->ifp), func, s); | |
a687059c | 717 | else |
bee1dbe2 | 718 | #ifdef DOSISH |
57ebbfd0 LW |
719 | fatal("fcntl is not implemented"); |
720 | #else | |
fe14fcc3 | 721 | #ifdef HAS_FCNTL |
79072805 | 722 | retval = fcntl(fileno(io->ifp), func, s); |
a687059c LW |
723 | #else |
724 | fatal("fcntl is not implemented"); | |
725 | #endif | |
57ebbfd0 | 726 | #endif |
a687059c LW |
727 | #else /* lint */ |
728 | retval = 0; | |
729 | #endif /* lint */ | |
730 | ||
79072805 LW |
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 LW |
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 LW |
743 | I32 chsize(fd, length) |
744 | I32 fd; /* file descriptor */ | |
6eb13c3b LW |
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 LW |
773 | |
774 | /* | |
79072805 | 775 | * This relies on the UNDOCUMENTED FFt_FREESP argument to |
6eb13c3b LW |
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 LW |
783 | return -1; |
784 | ||
785 | } | |
786 | ||
787 | return 0; | |
788 | } | |
79072805 | 789 | #endif /* FFt_FREESP */ |
ff8e2863 | 790 | |
79072805 LW |
791 | I32 |
792 | looks_like_number(sv) | |
793 | SV *sv; | |
a687059c LW |
794 | { |
795 | register char *s; | |
796 | register char *send; | |
797 | ||
79072805 | 798 | if (!SvPOK(sv)) |
a687059c | 799 | return TRUE; |
79072805 LW |
800 | s = SvPV(sv); |
801 | send = s + SvCUR(sv); | |
99b89507 | 802 | while (isSPACE(*s)) |
a687059c LW |
803 | s++; |
804 | if (s >= send) | |
805 | return FALSE; | |
806 | if (*s == '+' || *s == '-') | |
807 | s++; | |
99b89507 | 808 | while (isDIGIT(*s)) |
a687059c LW |
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 LW |
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 LW |
825 | s++; |
826 | } | |
99b89507 | 827 | while (isSPACE(*s)) |
a687059c LW |
828 | s++; |
829 | if (s >= send) | |
830 | return TRUE; | |
831 | return FALSE; | |
832 | } | |
833 | ||
834 | bool | |
79072805 LW |
835 | do_print(sv,fp) |
836 | register SV *sv; | |
a687059c LW |
837 | FILE *fp; |
838 | { | |
839 | register char *tmps; | |
79072805 | 840 | SV* tmpstr; |
a687059c | 841 | |
79072805 LW |
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 LW |
858 | switch (SvTYPE(sv)) { |
859 | case SVt_NULL: | |
ff8e2863 | 860 | return TRUE; |
79072805 LW |
861 | case SVt_REF: |
862 | fprintf(fp, "%s", sv_2pv(sv)); | |
ff8e2863 | 863 | return !ferror(fp); |
79072805 LW |
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 LW |
876 | } |
877 | ||
79072805 LW |
878 | I32 |
879 | my_stat(ARGS) | |
880 | dARGS | |
a687059c | 881 | { |
79072805 LW |
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 LW |
893 | } |
894 | else { | |
79072805 | 895 | if (cGVOP->op_gv == defgv) |
57ebbfd0 | 896 | return laststatval; |
a687059c LW |
897 | if (dowarn) |
898 | warn("Stat on unopened file <%s>", | |
79072805 LW |
899 | GvENAME(cGVOP->op_gv)); |
900 | statgv = Nullgv; | |
901 | sv_setpv(statname,""); | |
57ebbfd0 | 902 | return (laststatval = -1); |
a687059c LW |
903 | } |
904 | } | |
905 | else { | |
79072805 LW |
906 | dPOPss; |
907 | PUTBACK; | |
908 | statgv = Nullgv; | |
909 | sv_setpv(statname,SvPVn(sv)); | |
910 | laststype = OP_STAT; | |
911 | laststatval = stat(SvPVn(sv),&statcache); | |
93a17b20 | 912 | if (laststatval < 0 && dowarn && strchr(SvPVn(sv), '\n')) |
bee1dbe2 LW |
913 | warn(warn_nl, "stat"); |
914 | return laststatval; | |
a687059c LW |
915 | } |
916 | } | |
917 | ||
79072805 LW |
918 | I32 |
919 | my_lstat(ARGS) | |
920 | dARGS | |
c623bd54 | 921 | { |
79072805 LW |
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 LW |
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 LW |
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 |
93a17b20 | 944 | if (laststatval < 0 && dowarn && strchr(SvPVn(sv), '\n')) |
bee1dbe2 LW |
945 | warn(warn_nl, "lstat"); |
946 | return laststatval; | |
c623bd54 LW |
947 | } |
948 | ||
a687059c | 949 | bool |
79072805 LW |
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 LW |
956 | char *tmps; |
957 | ||
79072805 LW |
958 | if (sp > mark) { |
959 | New(401,Argv, sp - mark + 1, char*); | |
bee1dbe2 | 960 | a = Argv; |
79072805 LW |
961 | while (++mark <= sp) { |
962 | if (*mark) | |
963 | *a++ = SvPVnx(*mark); | |
a687059c LW |
964 | else |
965 | *a++ = ""; | |
966 | } | |
967 | *a = Nullch; | |
bee1dbe2 | 968 | if (*Argv[0] != '/') /* will execvp use PATH? */ |
79072805 LW |
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 LW |
976 | return FALSE; |
977 | } | |
978 | ||
fe14fcc3 | 979 | void |
ff8e2863 LW |
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 LW |
992 | bool |
993 | do_exec(cmd) | |
994 | char *cmd; | |
995 | { | |
996 | register char **a; | |
997 | register char *s; | |
a687059c LW |
998 | char flags[10]; |
999 | ||
a687059c LW |
1000 | /* save an extra exec if possible */ |
1001 | ||
bf38876a LW |
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 LW |
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 LW |
1022 | *s = '\''; |
1023 | return FALSE; | |
1024 | } | |
1025 | } | |
1026 | } | |
bf38876a | 1027 | #endif /* CSH */ |
a687059c LW |
1028 | |
1029 | /* see if there are shell metacharacters in it */ | |
1030 | ||
99b89507 LW |
1031 | /*SUPPRESS 530*/ |
1032 | for (s = cmd; *s && isALPHA(*s); s++) ; /* catch VAR=val gizmo */ | |
63f2c1e1 LW |
1033 | if (*s == '=') |
1034 | goto doshell; | |
a687059c | 1035 | for (s = cmd; *s; s++) { |
93a17b20 | 1036 | if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) { |
a687059c LW |
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 LW |
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 LW |
1051 | if (*s) |
1052 | *(a++) = s; | |
99b89507 | 1053 | while (*s && !isSPACE(*s)) s++; |
a687059c LW |
1054 | if (*s) |
1055 | *s++ = '\0'; | |
1056 | } | |
1057 | *a = Nullch; | |
ff8e2863 LW |
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 LW |
1066 | return FALSE; |
1067 | } | |
1068 | ||
79072805 LW |
1069 | I32 |
1070 | apply(type,mark,sp) | |
1071 | I32 type; | |
1072 | register SV **mark; | |
1073 | register SV **sp; | |
a687059c | 1074 | { |
79072805 LW |
1075 | register I32 val; |
1076 | register I32 val2; | |
1077 | register I32 tot = 0; | |
a687059c | 1078 | char *s; |
79072805 | 1079 | SV **oldmark = mark; |
a687059c LW |
1080 | |
1081 | #ifdef TAINT | |
79072805 LW |
1082 | while (++mark <= sp) |
1083 | TAINT_IF((*mark)->sv_tainted); | |
1084 | mark = oldmark; | |
a687059c LW |
1085 | #endif |
1086 | switch (type) { | |
79072805 LW |
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 LW |
1094 | tot--; |
1095 | } | |
1096 | } | |
1097 | break; | |
fe14fcc3 | 1098 | #ifdef HAS_CHOWN |
79072805 LW |
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 LW |
1107 | tot--; |
1108 | } | |
1109 | } | |
1110 | break; | |
b1248f16 | 1111 | #endif |
fe14fcc3 | 1112 | #ifdef HAS_KILL |
79072805 LW |
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 LW |
1136 | } |
1137 | else { | |
1138 | while (++mark <= sp) { | |
1139 | if (kill(SvIVnx(*mark),val)) | |
1140 | tot--; | |
a687059c LW |
1141 | } |
1142 | } | |
1143 | break; | |
b1248f16 | 1144 | #endif |
79072805 LW |
1145 | case OP_UNLINK: |
1146 | TAINT_PROPER("unlink"); | |
1147 | tot = sp - mark; | |
1148 | while (++mark <= sp) { | |
1149 | s = SvPVnx(*mark); | |
a687059c LW |
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 LW |
1160 | tot--; |
1161 | else { | |
1162 | if (UNLINK(s)) | |
1163 | tot--; | |
1164 | } | |
1165 | } | |
1166 | } | |
1167 | break; | |
79072805 LW |
1168 | case OP_UTIME: |
1169 | TAINT_PROPER("utime"); | |
1170 | if (sp - mark > 2) { | |
663a0e37 LW |
1171 | #ifdef I_UTIME |
1172 | struct utimbuf utbuf; | |
1173 | #else | |
a687059c | 1174 | struct { |
663a0e37 LW |
1175 | long actime; |
1176 | long modtime; | |
a687059c | 1177 | } utbuf; |
663a0e37 | 1178 | #endif |
a687059c | 1179 | |
afd9f252 | 1180 | Zero(&utbuf, sizeof utbuf, char); |
79072805 LW |
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 LW |
1186 | tot--; |
1187 | } | |
a687059c LW |
1188 | } |
1189 | else | |
79072805 | 1190 | tot = 0; |
a687059c LW |
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 LW |
1200 | I32 bit; |
1201 | I32 effective; | |
a687059c LW |
1202 | register struct stat *statbufp; |
1203 | { | |
bee1dbe2 | 1204 | #ifdef DOSISH |
fe14fcc3 LW |
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 LW |
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 LW |
1226 | return (bit & statbufp->st_mode) ? TRUE : FALSE; |
1227 | ||
1228 | #else /* ! MSDOS */ | |
a687059c | 1229 | if ((effective ? euid : uid) == 0) { /* root is special */ |
c623bd54 LW |
1230 | if (bit == S_IXUSR) { |
1231 | if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode)) | |
a687059c LW |
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 LW |
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 LW |
1250 | } |
1251 | ||
79072805 | 1252 | I32 |
a687059c | 1253 | ingroup(testgid,effective) |
79072805 LW |
1254 | I32 testgid; |
1255 | I32 effective; | |
a687059c LW |
1256 | { |
1257 | if (testgid == (effective ? egid : gid)) | |
1258 | return TRUE; | |
fe14fcc3 | 1259 | #ifdef HAS_GETGROUPS |
a687059c LW |
1260 | #ifndef NGROUPS |
1261 | #define NGROUPS 32 | |
1262 | #endif | |
1263 | { | |
1c3d792e | 1264 | GROUPSTYPE gary[NGROUPS]; |
79072805 | 1265 | I32 anum; |
a687059c LW |
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 LW |
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 LW |
1287 | key = (key_t)SvNVnx(*++mark); |
1288 | n = (optype == OP_MSGGET) ? 0 : SvIVnx(*++mark); | |
1289 | flags = SvIVnx(*++mark); | |
c2ab57d4 LW |
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 LW |
1309 | } |
1310 | return -1; /* should never happen */ | |
1311 | } | |
1312 | ||
79072805 LW |
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 LW |
1323 | id = SvIVnx(*++mark); |
1324 | n = (optype == OP_SEMCTL) ? SvIVnx(*++mark) : 0; | |
1325 | cmd = SvIVnx(*++mark); | |
1326 | astr = *++mark; | |
c2ab57d4 LW |
1327 | infosize = 0; |
1328 | getinfo = (cmd == IPC_STAT); | |
1329 | ||
1330 | switch (optype) | |
1331 | { | |
fe14fcc3 | 1332 | #ifdef HAS_MSG |
79072805 | 1333 | case OP_MSGCTL: |
c2ab57d4 LW |
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 LW |
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 LW |
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 LW |
1354 | infosize = semds.sem_nsems * sizeof(short); |
1355 | /* "short" is technically wrong but much more portable | |
1356 | than guessing about u_?short(_t)? */ | |
c2ab57d4 LW |
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 LW |
1364 | } |
1365 | ||
1366 | if (infosize) | |
1367 | { | |
1368 | if (getinfo) | |
1369 | { | |
79072805 LW |
1370 | SvGROW(astr, infosize+1); |
1371 | a = SvPVn(astr); | |
c2ab57d4 LW |
1372 | } |
1373 | else | |
1374 | { | |
79072805 LW |
1375 | a = SvPVn(astr); |
1376 | if (SvCUR(astr) != infosize) | |
c2ab57d4 LW |
1377 | { |
1378 | errno = EINVAL; | |
1379 | return -1; | |
1380 | } | |
1381 | } | |
1382 | } | |
1383 | else | |
1384 | { | |
79072805 | 1385 | I32 i = SvIVn(astr); |
c2ab57d4 LW |
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 LW |
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 LW |
1406 | } |
1407 | if (getinfo && ret >= 0) { | |
79072805 LW |
1408 | SvCUR_set(astr, infosize); |
1409 | *SvEND(astr) = '\0'; | |
c2ab57d4 LW |
1410 | } |
1411 | return ret; | |
1412 | } | |
1413 | ||
79072805 LW |
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 LW |
1424 | id = SvIVnx(*++mark); |
1425 | mstr = *++mark; | |
1426 | flags = SvIVnx(*++mark); | |
1427 | mbuf = SvPVn(mstr); | |
1428 | if ((msize = SvCUR(mstr) - sizeof(long)) < 0) { | |
c2ab57d4 LW |
1429 | errno = EINVAL; |
1430 | return -1; | |
1431 | } | |
1432 | errno = 0; | |
bee1dbe2 | 1433 | return msgsnd(id, (struct msgbuf *)mbuf, msize, flags); |
e5d73d77 LW |
1434 | #else |
1435 | fatal("msgsnd not implemented"); | |
1436 | #endif | |
c2ab57d4 LW |
1437 | } |
1438 | ||
79072805 LW |
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 LW |
1446 | char *mbuf; |
1447 | long mtype; | |
79072805 LW |
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 LW |
1459 | } |
1460 | errno = 0; | |
bee1dbe2 | 1461 | ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags); |
c2ab57d4 | 1462 | if (ret >= 0) { |
79072805 LW |
1463 | SvCUR_set(mstr, sizeof(long)+ret); |
1464 | *SvEND(mstr) = '\0'; | |
c2ab57d4 LW |
1465 | } |
1466 | return ret; | |
e5d73d77 LW |
1467 | #else |
1468 | fatal("msgrcv not implemented"); | |
1469 | #endif | |
c2ab57d4 LW |
1470 | } |
1471 | ||
79072805 LW |
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 LW |
1482 | id = SvIVnx(*++mark); |
1483 | opstr = *++mark; | |
1484 | opbuf = SvPVn(opstr); | |
1485 | opsize = SvCUR(opstr); | |
c2ab57d4 LW |
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 LW |
1493 | #else |
1494 | fatal("semop not implemented"); | |
1495 | #endif | |
c2ab57d4 LW |
1496 | } |
1497 | ||
79072805 LW |
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 LW |
1513 | id = SvIVnx(*++mark); |
1514 | mstr = *++mark; | |
1515 | mpos = SvIVnx(*++mark); | |
1516 | msize = SvIVnx(*++mark); | |
c2ab57d4 LW |
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 LW |
1525 | if (shm == (char *)-1) /* I hate System V IPC, I really do */ |
1526 | return -1; | |
79072805 LW |
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 LW |
1534 | SvCUR_set(mstr, msize); |
1535 | *SvEND(mstr) = '\0'; | |
c2ab57d4 LW |
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 LW |
1545 | } |
1546 | return shmdt(shm); | |
e5d73d77 LW |
1547 | #else |
1548 | fatal("shm I/O not implemented"); | |
1549 | #endif | |
c2ab57d4 LW |
1550 | } |
1551 | ||
fe14fcc3 | 1552 | #endif /* SYSV IPC */ |