Commit | Line | Data |
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449092f6 CV |
1 | /* Remote File-I/O communications |
2 | ||
9b254dd1 | 3 | Copyright (C) 2003, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
449092f6 CV |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
449092f6 CV |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
449092f6 CV |
19 | |
20 | /* See the GDB User Guide for details of the GDB remote protocol. */ | |
21 | ||
22 | #include "defs.h" | |
23 | #include "gdb_string.h" | |
24 | #include "gdbcmd.h" | |
25 | #include "remote.h" | |
26 | #include "gdb/fileio.h" | |
0ef75e11 AC |
27 | #include "gdb_wait.h" |
28 | #include "gdb_stat.h" | |
60250e8b | 29 | #include "exceptions.h" |
cd90e54f | 30 | #include "remote-fileio.h" |
449092f6 | 31 | |
449092f6 CV |
32 | #include <fcntl.h> |
33 | #include <sys/time.h> | |
449092f6 | 34 | #ifdef __CYGWIN__ |
0ef75e11 | 35 | #include <sys/cygwin.h> /* For cygwin_conv_to_full_posix_path. */ |
449092f6 | 36 | #endif |
449092f6 CV |
37 | #include <signal.h> |
38 | ||
39 | static struct { | |
40 | int *fd_map; | |
41 | int fd_map_size; | |
42 | } remote_fio_data; | |
43 | ||
44 | #define FIO_FD_INVALID -1 | |
45 | #define FIO_FD_CONSOLE_IN -2 | |
46 | #define FIO_FD_CONSOLE_OUT -3 | |
47 | ||
48 | static int remote_fio_system_call_allowed = 0; | |
49 | ||
50 | static int | |
cbcdb1f5 | 51 | remote_fileio_init_fd_map (void) |
449092f6 CV |
52 | { |
53 | int i; | |
54 | ||
55 | if (!remote_fio_data.fd_map) | |
56 | { | |
57 | remote_fio_data.fd_map = (int *) xmalloc (10 * sizeof (int)); | |
58 | remote_fio_data.fd_map_size = 10; | |
59 | remote_fio_data.fd_map[0] = FIO_FD_CONSOLE_IN; | |
60 | remote_fio_data.fd_map[1] = FIO_FD_CONSOLE_OUT; | |
61 | remote_fio_data.fd_map[2] = FIO_FD_CONSOLE_OUT; | |
62 | for (i = 3; i < 10; ++i) | |
63 | remote_fio_data.fd_map[i] = FIO_FD_INVALID; | |
64 | } | |
65 | return 3; | |
66 | } | |
67 | ||
68 | static int | |
cbcdb1f5 | 69 | remote_fileio_resize_fd_map (void) |
449092f6 | 70 | { |
9f8e6999 MG |
71 | int i = remote_fio_data.fd_map_size; |
72 | ||
449092f6 CV |
73 | if (!remote_fio_data.fd_map) |
74 | return remote_fileio_init_fd_map (); | |
75 | remote_fio_data.fd_map_size += 10; | |
76 | remote_fio_data.fd_map = | |
77 | (int *) xrealloc (remote_fio_data.fd_map, | |
78 | remote_fio_data.fd_map_size * sizeof (int)); | |
9f8e6999 MG |
79 | for (; i < remote_fio_data.fd_map_size; i++) |
80 | remote_fio_data.fd_map[i] = FIO_FD_INVALID; | |
449092f6 CV |
81 | return remote_fio_data.fd_map_size - 10; |
82 | } | |
83 | ||
84 | static int | |
cbcdb1f5 | 85 | remote_fileio_next_free_fd (void) |
449092f6 CV |
86 | { |
87 | int i; | |
88 | ||
89 | for (i = 0; i < remote_fio_data.fd_map_size; ++i) | |
90 | if (remote_fio_data.fd_map[i] == FIO_FD_INVALID) | |
91 | return i; | |
92 | return remote_fileio_resize_fd_map (); | |
93 | } | |
94 | ||
95 | static int | |
96 | remote_fileio_fd_to_targetfd (int fd) | |
97 | { | |
98 | int target_fd = remote_fileio_next_free_fd (); | |
99 | remote_fio_data.fd_map[target_fd] = fd; | |
100 | return target_fd; | |
101 | } | |
102 | ||
103 | static int | |
104 | remote_fileio_map_fd (int target_fd) | |
105 | { | |
106 | remote_fileio_init_fd_map (); | |
107 | if (target_fd < 0 || target_fd >= remote_fio_data.fd_map_size) | |
108 | return FIO_FD_INVALID; | |
109 | return remote_fio_data.fd_map[target_fd]; | |
110 | } | |
111 | ||
112 | static void | |
113 | remote_fileio_close_target_fd (int target_fd) | |
114 | { | |
115 | remote_fileio_init_fd_map (); | |
116 | if (target_fd >= 0 && target_fd < remote_fio_data.fd_map_size) | |
117 | remote_fio_data.fd_map[target_fd] = FIO_FD_INVALID; | |
118 | } | |
119 | ||
120 | static int | |
121 | remote_fileio_oflags_to_host (long flags) | |
122 | { | |
123 | int hflags = 0; | |
124 | ||
125 | if (flags & FILEIO_O_CREAT) | |
126 | hflags |= O_CREAT; | |
127 | if (flags & FILEIO_O_EXCL) | |
128 | hflags |= O_EXCL; | |
129 | if (flags & FILEIO_O_TRUNC) | |
130 | hflags |= O_TRUNC; | |
131 | if (flags & FILEIO_O_APPEND) | |
132 | hflags |= O_APPEND; | |
133 | if (flags & FILEIO_O_RDONLY) | |
134 | hflags |= O_RDONLY; | |
135 | if (flags & FILEIO_O_WRONLY) | |
136 | hflags |= O_WRONLY; | |
137 | if (flags & FILEIO_O_RDWR) | |
138 | hflags |= O_RDWR; | |
139 | /* On systems supporting binary and text mode, always open files in | |
140 | binary mode. */ | |
141 | #ifdef O_BINARY | |
142 | hflags |= O_BINARY; | |
143 | #endif | |
144 | return hflags; | |
145 | } | |
146 | ||
147 | static mode_t | |
148 | remote_fileio_mode_to_host (long mode, int open_call) | |
149 | { | |
150 | mode_t hmode = 0; | |
151 | ||
152 | if (!open_call) | |
153 | { | |
154 | if (mode & FILEIO_S_IFREG) | |
155 | hmode |= S_IFREG; | |
156 | if (mode & FILEIO_S_IFDIR) | |
157 | hmode |= S_IFDIR; | |
158 | if (mode & FILEIO_S_IFCHR) | |
159 | hmode |= S_IFCHR; | |
160 | } | |
161 | if (mode & FILEIO_S_IRUSR) | |
162 | hmode |= S_IRUSR; | |
163 | if (mode & FILEIO_S_IWUSR) | |
164 | hmode |= S_IWUSR; | |
165 | if (mode & FILEIO_S_IXUSR) | |
166 | hmode |= S_IXUSR; | |
9b265ec2 | 167 | #ifdef S_IRGRP |
449092f6 CV |
168 | if (mode & FILEIO_S_IRGRP) |
169 | hmode |= S_IRGRP; | |
9b265ec2 MM |
170 | #endif |
171 | #ifdef S_IWGRP | |
449092f6 CV |
172 | if (mode & FILEIO_S_IWGRP) |
173 | hmode |= S_IWGRP; | |
9b265ec2 MM |
174 | #endif |
175 | #ifdef S_IXGRP | |
449092f6 CV |
176 | if (mode & FILEIO_S_IXGRP) |
177 | hmode |= S_IXGRP; | |
9b265ec2 | 178 | #endif |
449092f6 CV |
179 | if (mode & FILEIO_S_IROTH) |
180 | hmode |= S_IROTH; | |
9b265ec2 | 181 | #ifdef S_IWOTH |
449092f6 CV |
182 | if (mode & FILEIO_S_IWOTH) |
183 | hmode |= S_IWOTH; | |
9b265ec2 MM |
184 | #endif |
185 | #ifdef S_IXOTH | |
449092f6 CV |
186 | if (mode & FILEIO_S_IXOTH) |
187 | hmode |= S_IXOTH; | |
9b265ec2 | 188 | #endif |
449092f6 CV |
189 | return hmode; |
190 | } | |
191 | ||
cbcdb1f5 | 192 | static LONGEST |
449092f6 CV |
193 | remote_fileio_mode_to_target (mode_t mode) |
194 | { | |
195 | mode_t tmode = 0; | |
196 | ||
9c7deb13 | 197 | if (S_ISREG(mode)) |
449092f6 | 198 | tmode |= FILEIO_S_IFREG; |
9c7deb13 | 199 | if (S_ISDIR(mode)) |
449092f6 | 200 | tmode |= FILEIO_S_IFDIR; |
9c7deb13 | 201 | if (S_ISCHR(mode)) |
449092f6 CV |
202 | tmode |= FILEIO_S_IFCHR; |
203 | if (mode & S_IRUSR) | |
204 | tmode |= FILEIO_S_IRUSR; | |
205 | if (mode & S_IWUSR) | |
206 | tmode |= FILEIO_S_IWUSR; | |
207 | if (mode & S_IXUSR) | |
208 | tmode |= FILEIO_S_IXUSR; | |
9b265ec2 | 209 | #ifdef S_IRGRP |
449092f6 CV |
210 | if (mode & S_IRGRP) |
211 | tmode |= FILEIO_S_IRGRP; | |
9b265ec2 MM |
212 | #endif |
213 | #ifdef S_IWRGRP | |
449092f6 CV |
214 | if (mode & S_IWGRP) |
215 | tmode |= FILEIO_S_IWGRP; | |
9b265ec2 MM |
216 | #endif |
217 | #ifdef S_IXGRP | |
449092f6 CV |
218 | if (mode & S_IXGRP) |
219 | tmode |= FILEIO_S_IXGRP; | |
9b265ec2 | 220 | #endif |
449092f6 CV |
221 | if (mode & S_IROTH) |
222 | tmode |= FILEIO_S_IROTH; | |
9b265ec2 | 223 | #ifdef S_IWOTH |
449092f6 CV |
224 | if (mode & S_IWOTH) |
225 | tmode |= FILEIO_S_IWOTH; | |
9b265ec2 MM |
226 | #endif |
227 | #ifdef S_IXOTH | |
449092f6 CV |
228 | if (mode & S_IXOTH) |
229 | tmode |= FILEIO_S_IXOTH; | |
9b265ec2 | 230 | #endif |
449092f6 CV |
231 | return tmode; |
232 | } | |
233 | ||
234 | static int | |
235 | remote_fileio_errno_to_target (int error) | |
236 | { | |
237 | switch (error) | |
238 | { | |
239 | case EPERM: | |
240 | return FILEIO_EPERM; | |
241 | case ENOENT: | |
242 | return FILEIO_ENOENT; | |
243 | case EINTR: | |
244 | return FILEIO_EINTR; | |
245 | case EIO: | |
246 | return FILEIO_EIO; | |
247 | case EBADF: | |
248 | return FILEIO_EBADF; | |
249 | case EACCES: | |
250 | return FILEIO_EACCES; | |
251 | case EFAULT: | |
252 | return FILEIO_EFAULT; | |
253 | case EBUSY: | |
254 | return FILEIO_EBUSY; | |
255 | case EEXIST: | |
256 | return FILEIO_EEXIST; | |
257 | case ENODEV: | |
258 | return FILEIO_ENODEV; | |
259 | case ENOTDIR: | |
260 | return FILEIO_ENOTDIR; | |
261 | case EISDIR: | |
262 | return FILEIO_EISDIR; | |
263 | case EINVAL: | |
264 | return FILEIO_EINVAL; | |
265 | case ENFILE: | |
266 | return FILEIO_ENFILE; | |
267 | case EMFILE: | |
268 | return FILEIO_EMFILE; | |
269 | case EFBIG: | |
270 | return FILEIO_EFBIG; | |
271 | case ENOSPC: | |
272 | return FILEIO_ENOSPC; | |
273 | case ESPIPE: | |
274 | return FILEIO_ESPIPE; | |
275 | case EROFS: | |
276 | return FILEIO_EROFS; | |
277 | case ENOSYS: | |
278 | return FILEIO_ENOSYS; | |
279 | case ENAMETOOLONG: | |
280 | return FILEIO_ENAMETOOLONG; | |
281 | } | |
282 | return FILEIO_EUNKNOWN; | |
283 | } | |
284 | ||
285 | static int | |
286 | remote_fileio_seek_flag_to_host (long num, int *flag) | |
287 | { | |
288 | if (!flag) | |
289 | return 0; | |
290 | switch (num) | |
291 | { | |
292 | case FILEIO_SEEK_SET: | |
293 | *flag = SEEK_SET; | |
294 | break; | |
295 | case FILEIO_SEEK_CUR: | |
296 | *flag = SEEK_CUR; | |
297 | break; | |
298 | case FILEIO_SEEK_END: | |
299 | *flag = SEEK_END; | |
300 | break; | |
301 | default: | |
302 | return -1; | |
303 | } | |
304 | return 0; | |
305 | } | |
306 | ||
307 | static int | |
cbcdb1f5 | 308 | remote_fileio_extract_long (char **buf, LONGEST *retlong) |
449092f6 CV |
309 | { |
310 | char *c; | |
311 | int sign = 1; | |
312 | ||
313 | if (!buf || !*buf || !**buf || !retlong) | |
314 | return -1; | |
315 | c = strchr (*buf, ','); | |
316 | if (c) | |
317 | *c++ = '\0'; | |
318 | else | |
319 | c = strchr (*buf, '\0'); | |
320 | while (strchr ("+-", **buf)) | |
321 | { | |
322 | if (**buf == '-') | |
323 | sign = -sign; | |
324 | ++*buf; | |
325 | } | |
326 | for (*retlong = 0; **buf; ++*buf) | |
327 | { | |
328 | *retlong <<= 4; | |
329 | if (**buf >= '0' && **buf <= '9') | |
330 | *retlong += **buf - '0'; | |
331 | else if (**buf >= 'a' && **buf <= 'f') | |
332 | *retlong += **buf - 'a' + 10; | |
333 | else if (**buf >= 'A' && **buf <= 'F') | |
334 | *retlong += **buf - 'A' + 10; | |
335 | else | |
336 | return -1; | |
337 | } | |
338 | *retlong *= sign; | |
339 | *buf = c; | |
340 | return 0; | |
341 | } | |
342 | ||
343 | static int | |
344 | remote_fileio_extract_int (char **buf, long *retint) | |
345 | { | |
346 | int ret; | |
cbcdb1f5 | 347 | LONGEST retlong; |
449092f6 CV |
348 | |
349 | if (!retint) | |
350 | return -1; | |
cbcdb1f5 CV |
351 | ret = remote_fileio_extract_long (buf, &retlong); |
352 | if (!ret) | |
449092f6 CV |
353 | *retint = (long) retlong; |
354 | return ret; | |
355 | } | |
356 | ||
357 | static int | |
358 | remote_fileio_extract_ptr_w_len (char **buf, CORE_ADDR *ptrval, int *length) | |
359 | { | |
360 | char *c; | |
cbcdb1f5 | 361 | LONGEST retlong; |
449092f6 CV |
362 | |
363 | if (!buf || !*buf || !**buf || !ptrval || !length) | |
364 | return -1; | |
365 | c = strchr (*buf, '/'); | |
366 | if (!c) | |
367 | return -1; | |
368 | *c++ = '\0'; | |
369 | if (remote_fileio_extract_long (buf, &retlong)) | |
370 | return -1; | |
371 | *ptrval = (CORE_ADDR) retlong; | |
372 | *buf = c; | |
373 | if (remote_fileio_extract_long (buf, &retlong)) | |
374 | return -1; | |
375 | *length = (int) retlong; | |
376 | return 0; | |
377 | } | |
378 | ||
379 | /* Convert to big endian */ | |
380 | static void | |
cbcdb1f5 | 381 | remote_fileio_to_be (LONGEST num, char *buf, int bytes) |
449092f6 CV |
382 | { |
383 | int i; | |
384 | ||
385 | for (i = 0; i < bytes; ++i) | |
386 | buf[i] = (num >> (8 * (bytes - i - 1))) & 0xff; | |
387 | } | |
388 | ||
449092f6 CV |
389 | static void |
390 | remote_fileio_to_fio_uint (long num, fio_uint_t fnum) | |
391 | { | |
cbcdb1f5 | 392 | remote_fileio_to_be ((LONGEST) num, (char *) fnum, 4); |
449092f6 CV |
393 | } |
394 | ||
395 | static void | |
396 | remote_fileio_to_fio_mode (mode_t num, fio_mode_t fnum) | |
397 | { | |
398 | remote_fileio_to_be (remote_fileio_mode_to_target(num), (char *) fnum, 4); | |
399 | } | |
400 | ||
401 | static void | |
402 | remote_fileio_to_fio_time (time_t num, fio_time_t fnum) | |
403 | { | |
cbcdb1f5 | 404 | remote_fileio_to_be ((LONGEST) num, (char *) fnum, 4); |
449092f6 CV |
405 | } |
406 | ||
407 | static void | |
cbcdb1f5 | 408 | remote_fileio_to_fio_long (LONGEST num, fio_long_t fnum) |
449092f6 CV |
409 | { |
410 | remote_fileio_to_be (num, (char *) fnum, 8); | |
411 | } | |
412 | ||
413 | static void | |
cbcdb1f5 | 414 | remote_fileio_to_fio_ulong (LONGEST num, fio_ulong_t fnum) |
449092f6 CV |
415 | { |
416 | remote_fileio_to_be (num, (char *) fnum, 8); | |
417 | } | |
418 | ||
419 | static void | |
420 | remote_fileio_to_fio_stat (struct stat *st, struct fio_stat *fst) | |
421 | { | |
d3ea6809 MM |
422 | LONGEST blksize; |
423 | ||
449092f6 CV |
424 | /* `st_dev' is set in the calling function */ |
425 | remote_fileio_to_fio_uint ((long) st->st_ino, fst->fst_ino); | |
426 | remote_fileio_to_fio_mode (st->st_mode, fst->fst_mode); | |
427 | remote_fileio_to_fio_uint ((long) st->st_nlink, fst->fst_nlink); | |
428 | remote_fileio_to_fio_uint ((long) st->st_uid, fst->fst_uid); | |
429 | remote_fileio_to_fio_uint ((long) st->st_gid, fst->fst_gid); | |
430 | remote_fileio_to_fio_uint ((long) st->st_rdev, fst->fst_rdev); | |
cbcdb1f5 | 431 | remote_fileio_to_fio_ulong ((LONGEST) st->st_size, fst->fst_size); |
d3ea6809 MM |
432 | #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE |
433 | blksize = st->st_blksize; | |
434 | #else | |
435 | blksize = 512; | |
436 | #endif | |
437 | remote_fileio_to_fio_ulong (blksize, fst->fst_blksize); | |
1dd727e9 | 438 | #if HAVE_STRUCT_STAT_ST_BLOCKS |
cbcdb1f5 | 439 | remote_fileio_to_fio_ulong ((LONGEST) st->st_blocks, fst->fst_blocks); |
1dd727e9 EZ |
440 | #else |
441 | /* FIXME: This is correct for DJGPP, but other systems that don't | |
442 | have st_blocks, if any, might prefer 512 instead of st_blksize. | |
443 | (eliz, 30-12-2003) */ | |
d3ea6809 MM |
444 | remote_fileio_to_fio_ulong (((LONGEST) st->st_size + blksize - 1) |
445 | / blksize, | |
1dd727e9 EZ |
446 | fst->fst_blocks); |
447 | #endif | |
449092f6 CV |
448 | remote_fileio_to_fio_time (st->st_atime, fst->fst_atime); |
449 | remote_fileio_to_fio_time (st->st_mtime, fst->fst_mtime); | |
450 | remote_fileio_to_fio_time (st->st_ctime, fst->fst_ctime); | |
451 | } | |
452 | ||
453 | static void | |
454 | remote_fileio_to_fio_timeval (struct timeval *tv, struct fio_timeval *ftv) | |
455 | { | |
456 | remote_fileio_to_fio_time (tv->tv_sec, ftv->ftv_sec); | |
457 | remote_fileio_to_fio_long (tv->tv_usec, ftv->ftv_usec); | |
458 | } | |
459 | ||
460 | static int remote_fio_ctrl_c_flag = 0; | |
461 | static int remote_fio_no_longjmp = 0; | |
449092f6 CV |
462 | |
463 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
464 | static struct sigaction remote_fio_sa; | |
465 | static struct sigaction remote_fio_osa; | |
466 | #else | |
467 | static void (*remote_fio_ofunc)(int); | |
468 | #endif | |
469 | ||
470 | static void | |
cbcdb1f5 | 471 | remote_fileio_sig_init (void) |
449092f6 CV |
472 | { |
473 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
474 | remote_fio_sa.sa_handler = SIG_IGN; | |
475 | sigemptyset (&remote_fio_sa.sa_mask); | |
476 | remote_fio_sa.sa_flags = 0; | |
477 | sigaction (SIGINT, &remote_fio_sa, &remote_fio_osa); | |
478 | #else | |
479 | remote_fio_ofunc = signal (SIGINT, SIG_IGN); | |
480 | #endif | |
481 | } | |
482 | ||
483 | static void | |
484 | remote_fileio_sig_set (void (*sigint_func)(int)) | |
485 | { | |
486 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
487 | remote_fio_sa.sa_handler = sigint_func; | |
488 | sigemptyset (&remote_fio_sa.sa_mask); | |
489 | remote_fio_sa.sa_flags = 0; | |
490 | sigaction (SIGINT, &remote_fio_sa, NULL); | |
491 | #else | |
492 | signal (SIGINT, sigint_func); | |
493 | #endif | |
494 | } | |
495 | ||
496 | static void | |
cbcdb1f5 | 497 | remote_fileio_sig_exit (void) |
449092f6 CV |
498 | { |
499 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
500 | sigaction (SIGINT, &remote_fio_osa, NULL); | |
501 | #else | |
502 | signal (SIGINT, remote_fio_ofunc); | |
503 | #endif | |
504 | } | |
505 | ||
506 | static void | |
507 | remote_fileio_ctrl_c_signal_handler (int signo) | |
508 | { | |
509 | remote_fileio_sig_set (SIG_IGN); | |
510 | remote_fio_ctrl_c_flag = 1; | |
511 | if (!remote_fio_no_longjmp) | |
315a522e | 512 | deprecated_throw_reason (RETURN_QUIT); |
449092f6 CV |
513 | remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler); |
514 | } | |
515 | ||
516 | static void | |
517 | remote_fileio_reply (int retcode, int error) | |
518 | { | |
519 | char buf[32]; | |
520 | ||
521 | remote_fileio_sig_set (SIG_IGN); | |
522 | strcpy (buf, "F"); | |
523 | if (retcode < 0) | |
524 | { | |
525 | strcat (buf, "-"); | |
526 | retcode = -retcode; | |
527 | } | |
528 | sprintf (buf + strlen (buf), "%x", retcode); | |
529 | if (error || remote_fio_ctrl_c_flag) | |
530 | { | |
531 | if (error && remote_fio_ctrl_c_flag) | |
532 | error = FILEIO_EINTR; | |
533 | if (error < 0) | |
534 | { | |
535 | strcat (buf, "-"); | |
536 | error = -error; | |
537 | } | |
538 | sprintf (buf + strlen (buf), ",%x", error); | |
539 | if (remote_fio_ctrl_c_flag) | |
540 | strcat (buf, ",C"); | |
541 | } | |
542 | remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler); | |
543 | putpkt (buf); | |
544 | } | |
545 | ||
546 | static void | |
cbcdb1f5 | 547 | remote_fileio_ioerror (void) |
449092f6 CV |
548 | { |
549 | remote_fileio_reply (-1, FILEIO_EIO); | |
550 | } | |
551 | ||
552 | static void | |
cbcdb1f5 | 553 | remote_fileio_badfd (void) |
449092f6 CV |
554 | { |
555 | remote_fileio_reply (-1, FILEIO_EBADF); | |
556 | } | |
557 | ||
558 | static void | |
559 | remote_fileio_return_errno (int retcode) | |
560 | { | |
561 | remote_fileio_reply (retcode, | |
562 | retcode < 0 ? remote_fileio_errno_to_target (errno) : 0); | |
563 | } | |
564 | ||
565 | static void | |
566 | remote_fileio_return_success (int retcode) | |
567 | { | |
568 | remote_fileio_reply (retcode, 0); | |
569 | } | |
570 | ||
571 | /* Wrapper function for remote_write_bytes() which has the disadvantage to | |
572 | write only one packet, regardless of the requested number of bytes to | |
573 | transfer. This wrapper calls remote_write_bytes() as often as needed. */ | |
574 | static int | |
cfd77fa1 | 575 | remote_fileio_write_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
449092f6 CV |
576 | { |
577 | int ret = 0, written; | |
578 | ||
579 | while (len > 0 && (written = remote_write_bytes (memaddr, myaddr, len)) > 0) | |
580 | { | |
581 | len -= written; | |
582 | memaddr += written; | |
583 | myaddr += written; | |
584 | ret += written; | |
585 | } | |
586 | return ret; | |
587 | } | |
588 | ||
589 | static void | |
590 | remote_fileio_func_open (char *buf) | |
591 | { | |
592 | CORE_ADDR ptrval; | |
593 | int length, retlength; | |
594 | long num; | |
595 | int flags, fd; | |
596 | mode_t mode; | |
597 | char *pathname; | |
598 | struct stat st; | |
599 | ||
600 | /* 1. Parameter: Ptr to pathname / length incl. trailing zero */ | |
601 | if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length)) | |
602 | { | |
603 | remote_fileio_ioerror (); | |
604 | return; | |
605 | } | |
606 | /* 2. Parameter: open flags */ | |
607 | if (remote_fileio_extract_int (&buf, &num)) | |
608 | { | |
609 | remote_fileio_ioerror (); | |
610 | return; | |
611 | } | |
612 | flags = remote_fileio_oflags_to_host (num); | |
613 | /* 3. Parameter: open mode */ | |
614 | if (remote_fileio_extract_int (&buf, &num)) | |
615 | { | |
616 | remote_fileio_ioerror (); | |
617 | return; | |
618 | } | |
619 | mode = remote_fileio_mode_to_host (num, 1); | |
620 | ||
621 | /* Request pathname using 'm' packet */ | |
622 | pathname = alloca (length); | |
cfd77fa1 | 623 | retlength = remote_read_bytes (ptrval, (gdb_byte *) pathname, length); |
449092f6 CV |
624 | if (retlength != length) |
625 | { | |
626 | remote_fileio_ioerror (); | |
627 | return; | |
628 | } | |
629 | ||
630 | /* Check if pathname exists and is not a regular file or directory. If so, | |
631 | return an appropriate error code. Same for trying to open directories | |
632 | for writing. */ | |
633 | if (!stat (pathname, &st)) | |
634 | { | |
635 | if (!S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode)) | |
636 | { | |
637 | remote_fileio_reply (-1, FILEIO_ENODEV); | |
638 | return; | |
639 | } | |
640 | if (S_ISDIR (st.st_mode) | |
641 | && ((flags & O_WRONLY) == O_WRONLY || (flags & O_RDWR) == O_RDWR)) | |
642 | { | |
643 | remote_fileio_reply (-1, FILEIO_EISDIR); | |
644 | return; | |
645 | } | |
646 | } | |
647 | ||
648 | remote_fio_no_longjmp = 1; | |
649 | fd = open (pathname, flags, mode); | |
650 | if (fd < 0) | |
651 | { | |
652 | remote_fileio_return_errno (-1); | |
653 | return; | |
654 | } | |
655 | ||
656 | fd = remote_fileio_fd_to_targetfd (fd); | |
657 | remote_fileio_return_success (fd); | |
658 | } | |
659 | ||
660 | static void | |
661 | remote_fileio_func_close (char *buf) | |
662 | { | |
663 | long num; | |
664 | int fd; | |
665 | ||
666 | /* Parameter: file descriptor */ | |
667 | if (remote_fileio_extract_int (&buf, &num)) | |
668 | { | |
669 | remote_fileio_ioerror (); | |
670 | return; | |
671 | } | |
cbcdb1f5 CV |
672 | fd = remote_fileio_map_fd ((int) num); |
673 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
674 | { |
675 | remote_fileio_badfd (); | |
676 | return; | |
677 | } | |
678 | ||
679 | remote_fio_no_longjmp = 1; | |
680 | if (fd != FIO_FD_CONSOLE_IN && fd != FIO_FD_CONSOLE_OUT && close (fd)) | |
681 | remote_fileio_return_errno (-1); | |
682 | remote_fileio_close_target_fd ((int) num); | |
683 | remote_fileio_return_success (0); | |
684 | } | |
685 | ||
686 | static void | |
687 | remote_fileio_func_read (char *buf) | |
688 | { | |
689 | long target_fd, num; | |
cbcdb1f5 | 690 | LONGEST lnum; |
449092f6 CV |
691 | CORE_ADDR ptrval; |
692 | int fd, ret, retlength; | |
cfd77fa1 | 693 | gdb_byte *buffer; |
449092f6 CV |
694 | size_t length; |
695 | off_t old_offset, new_offset; | |
696 | ||
697 | /* 1. Parameter: file descriptor */ | |
698 | if (remote_fileio_extract_int (&buf, &target_fd)) | |
699 | { | |
700 | remote_fileio_ioerror (); | |
701 | return; | |
702 | } | |
cbcdb1f5 CV |
703 | fd = remote_fileio_map_fd ((int) target_fd); |
704 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
705 | { |
706 | remote_fileio_badfd (); | |
707 | return; | |
708 | } | |
709 | /* 2. Parameter: buffer pointer */ | |
710 | if (remote_fileio_extract_long (&buf, &lnum)) | |
711 | { | |
712 | remote_fileio_ioerror (); | |
713 | return; | |
714 | } | |
715 | ptrval = (CORE_ADDR) lnum; | |
716 | /* 3. Parameter: buffer length */ | |
717 | if (remote_fileio_extract_int (&buf, &num)) | |
718 | { | |
719 | remote_fileio_ioerror (); | |
720 | return; | |
721 | } | |
722 | length = (size_t) num; | |
723 | ||
724 | switch (fd) | |
725 | { | |
726 | case FIO_FD_CONSOLE_OUT: | |
727 | remote_fileio_badfd (); | |
728 | return; | |
729 | case FIO_FD_CONSOLE_IN: | |
730 | { | |
731 | static char *remaining_buf = NULL; | |
732 | static int remaining_length = 0; | |
733 | ||
cfd77fa1 | 734 | buffer = (gdb_byte *) xmalloc (32768); |
449092f6 CV |
735 | if (remaining_buf) |
736 | { | |
737 | remote_fio_no_longjmp = 1; | |
738 | if (remaining_length > length) | |
739 | { | |
740 | memcpy (buffer, remaining_buf, length); | |
741 | memmove (remaining_buf, remaining_buf + length, | |
742 | remaining_length - length); | |
743 | remaining_length -= length; | |
744 | ret = length; | |
745 | } | |
746 | else | |
747 | { | |
748 | memcpy (buffer, remaining_buf, remaining_length); | |
749 | xfree (remaining_buf); | |
750 | remaining_buf = NULL; | |
751 | ret = remaining_length; | |
752 | } | |
753 | } | |
754 | else | |
755 | { | |
cfd77fa1 | 756 | ret = ui_file_read (gdb_stdtargin, (char *) buffer, 32767); |
449092f6 CV |
757 | remote_fio_no_longjmp = 1; |
758 | if (ret > 0 && (size_t)ret > length) | |
759 | { | |
760 | remaining_buf = (char *) xmalloc (ret - length); | |
761 | remaining_length = ret - length; | |
762 | memcpy (remaining_buf, buffer + length, remaining_length); | |
763 | ret = length; | |
764 | } | |
765 | } | |
766 | } | |
767 | break; | |
768 | default: | |
cfd77fa1 | 769 | buffer = (gdb_byte *) xmalloc (length); |
449092f6 CV |
770 | /* POSIX defines EINTR behaviour of read in a weird way. It's allowed |
771 | for read() to return -1 even if "some" bytes have been read. It | |
772 | has been corrected in SUSv2 but that doesn't help us much... | |
773 | Therefore a complete solution must check how many bytes have been | |
774 | read on EINTR to return a more reliable value to the target */ | |
775 | old_offset = lseek (fd, 0, SEEK_CUR); | |
776 | remote_fio_no_longjmp = 1; | |
777 | ret = read (fd, buffer, length); | |
778 | if (ret < 0 && errno == EINTR) | |
779 | { | |
780 | new_offset = lseek (fd, 0, SEEK_CUR); | |
781 | /* If some data has been read, return the number of bytes read. | |
782 | The Ctrl-C flag is set in remote_fileio_reply() anyway */ | |
783 | if (old_offset != new_offset) | |
784 | ret = new_offset - old_offset; | |
785 | } | |
786 | break; | |
787 | } | |
788 | ||
789 | if (ret > 0) | |
790 | { | |
791 | retlength = remote_fileio_write_bytes (ptrval, buffer, ret); | |
792 | if (retlength != ret) | |
793 | ret = -1; /* errno has been set to EIO in remote_fileio_write_bytes() */ | |
794 | } | |
795 | ||
796 | if (ret < 0) | |
797 | remote_fileio_return_errno (-1); | |
798 | else | |
799 | remote_fileio_return_success (ret); | |
800 | ||
801 | xfree (buffer); | |
802 | } | |
803 | ||
804 | static void | |
805 | remote_fileio_func_write (char *buf) | |
806 | { | |
807 | long target_fd, num; | |
cbcdb1f5 | 808 | LONGEST lnum; |
449092f6 CV |
809 | CORE_ADDR ptrval; |
810 | int fd, ret, retlength; | |
cfd77fa1 | 811 | gdb_byte *buffer; |
449092f6 CV |
812 | size_t length; |
813 | ||
814 | /* 1. Parameter: file descriptor */ | |
815 | if (remote_fileio_extract_int (&buf, &target_fd)) | |
816 | { | |
817 | remote_fileio_ioerror (); | |
818 | return; | |
819 | } | |
cbcdb1f5 CV |
820 | fd = remote_fileio_map_fd ((int) target_fd); |
821 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
822 | { |
823 | remote_fileio_badfd (); | |
824 | return; | |
825 | } | |
826 | /* 2. Parameter: buffer pointer */ | |
827 | if (remote_fileio_extract_long (&buf, &lnum)) | |
828 | { | |
829 | remote_fileio_ioerror (); | |
830 | return; | |
831 | } | |
832 | ptrval = (CORE_ADDR) lnum; | |
833 | /* 3. Parameter: buffer length */ | |
834 | if (remote_fileio_extract_int (&buf, &num)) | |
835 | { | |
836 | remote_fileio_ioerror (); | |
837 | return; | |
838 | } | |
839 | length = (size_t) num; | |
840 | ||
cfd77fa1 | 841 | buffer = (gdb_byte *) xmalloc (length); |
449092f6 CV |
842 | retlength = remote_read_bytes (ptrval, buffer, length); |
843 | if (retlength != length) | |
844 | { | |
845 | xfree (buffer); | |
846 | remote_fileio_ioerror (); | |
847 | return; | |
848 | } | |
849 | ||
850 | remote_fio_no_longjmp = 1; | |
851 | switch (fd) | |
852 | { | |
853 | case FIO_FD_CONSOLE_IN: | |
854 | remote_fileio_badfd (); | |
1ed489bd | 855 | xfree (buffer); |
449092f6 CV |
856 | return; |
857 | case FIO_FD_CONSOLE_OUT: | |
cfd77fa1 DJ |
858 | ui_file_write (target_fd == 1 ? gdb_stdtarg : gdb_stdtargerr, |
859 | (char *) buffer, length); | |
449092f6 CV |
860 | gdb_flush (target_fd == 1 ? gdb_stdtarg : gdb_stdtargerr); |
861 | ret = length; | |
862 | break; | |
863 | default: | |
864 | ret = write (fd, buffer, length); | |
865 | if (ret < 0 && errno == EACCES) | |
866 | errno = EBADF; /* Cygwin returns EACCESS when writing to a R/O file.*/ | |
867 | break; | |
868 | } | |
869 | ||
870 | if (ret < 0) | |
871 | remote_fileio_return_errno (-1); | |
872 | else | |
873 | remote_fileio_return_success (ret); | |
874 | ||
875 | xfree (buffer); | |
876 | } | |
877 | ||
878 | static void | |
879 | remote_fileio_func_lseek (char *buf) | |
880 | { | |
881 | long num; | |
cbcdb1f5 | 882 | LONGEST lnum; |
449092f6 CV |
883 | int fd, flag; |
884 | off_t offset, ret; | |
885 | ||
886 | /* 1. Parameter: file descriptor */ | |
887 | if (remote_fileio_extract_int (&buf, &num)) | |
888 | { | |
889 | remote_fileio_ioerror (); | |
890 | return; | |
891 | } | |
cbcdb1f5 CV |
892 | fd = remote_fileio_map_fd ((int) num); |
893 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
894 | { |
895 | remote_fileio_badfd (); | |
896 | return; | |
897 | } | |
898 | else if (fd == FIO_FD_CONSOLE_IN || fd == FIO_FD_CONSOLE_OUT) | |
899 | { | |
900 | remote_fileio_reply (-1, FILEIO_ESPIPE); | |
901 | return; | |
902 | } | |
903 | ||
904 | /* 2. Parameter: offset */ | |
905 | if (remote_fileio_extract_long (&buf, &lnum)) | |
906 | { | |
907 | remote_fileio_ioerror (); | |
908 | return; | |
909 | } | |
910 | offset = (off_t) lnum; | |
911 | /* 3. Parameter: flag */ | |
912 | if (remote_fileio_extract_int (&buf, &num)) | |
913 | { | |
914 | remote_fileio_ioerror (); | |
915 | return; | |
916 | } | |
917 | if (remote_fileio_seek_flag_to_host (num, &flag)) | |
918 | { | |
919 | remote_fileio_reply (-1, FILEIO_EINVAL); | |
920 | return; | |
921 | } | |
922 | ||
923 | remote_fio_no_longjmp = 1; | |
924 | ret = lseek (fd, offset, flag); | |
925 | ||
926 | if (ret == (off_t) -1) | |
927 | remote_fileio_return_errno (-1); | |
928 | else | |
929 | remote_fileio_return_success (ret); | |
930 | } | |
931 | ||
932 | static void | |
933 | remote_fileio_func_rename (char *buf) | |
934 | { | |
86cc68a8 NS |
935 | CORE_ADDR old_ptr, new_ptr; |
936 | int old_len, new_len, retlength; | |
449092f6 CV |
937 | char *oldpath, *newpath; |
938 | int ret, of, nf; | |
939 | struct stat ost, nst; | |
940 | ||
941 | /* 1. Parameter: Ptr to oldpath / length incl. trailing zero */ | |
86cc68a8 | 942 | if (remote_fileio_extract_ptr_w_len (&buf, &old_ptr, &old_len)) |
449092f6 CV |
943 | { |
944 | remote_fileio_ioerror (); | |
945 | return; | |
946 | } | |
86cc68a8 NS |
947 | |
948 | /* 2. Parameter: Ptr to newpath / length incl. trailing zero */ | |
949 | if (remote_fileio_extract_ptr_w_len (&buf, &new_ptr, &new_len)) | |
449092f6 CV |
950 | { |
951 | remote_fileio_ioerror (); | |
952 | return; | |
953 | } | |
86cc68a8 NS |
954 | |
955 | /* Request oldpath using 'm' packet */ | |
956 | oldpath = alloca (old_len); | |
957 | retlength = remote_read_bytes (old_ptr, (gdb_byte *) oldpath, old_len); | |
958 | if (retlength != old_len) | |
449092f6 CV |
959 | { |
960 | remote_fileio_ioerror (); | |
961 | return; | |
962 | } | |
86cc68a8 | 963 | |
449092f6 | 964 | /* Request newpath using 'm' packet */ |
86cc68a8 NS |
965 | newpath = alloca (new_len); |
966 | retlength = remote_read_bytes (new_ptr, (gdb_byte *) newpath, new_len); | |
967 | if (retlength != new_len) | |
449092f6 CV |
968 | { |
969 | remote_fileio_ioerror (); | |
970 | return; | |
971 | } | |
972 | ||
973 | /* Only operate on regular files and directories */ | |
cbcdb1f5 CV |
974 | of = stat (oldpath, &ost); |
975 | nf = stat (newpath, &nst); | |
976 | if ((!of && !S_ISREG (ost.st_mode) && !S_ISDIR (ost.st_mode)) | |
977 | || (!nf && !S_ISREG (nst.st_mode) && !S_ISDIR (nst.st_mode))) | |
449092f6 CV |
978 | { |
979 | remote_fileio_reply (-1, FILEIO_EACCES); | |
980 | return; | |
981 | } | |
982 | ||
983 | remote_fio_no_longjmp = 1; | |
984 | ret = rename (oldpath, newpath); | |
985 | ||
986 | if (ret == -1) | |
987 | { | |
988 | /* Special case: newpath is a non-empty directory. Some systems | |
989 | return ENOTEMPTY, some return EEXIST. We coerce that to be | |
990 | always EEXIST. */ | |
991 | if (errno == ENOTEMPTY) | |
992 | errno = EEXIST; | |
993 | #ifdef __CYGWIN__ | |
994 | /* Workaround some Cygwin problems with correct errnos. */ | |
995 | if (errno == EACCES) | |
996 | { | |
997 | if (!of && !nf && S_ISDIR (nst.st_mode)) | |
998 | { | |
999 | if (S_ISREG (ost.st_mode)) | |
1000 | errno = EISDIR; | |
1001 | else | |
1002 | { | |
1003 | char oldfullpath[PATH_MAX + 1]; | |
1004 | char newfullpath[PATH_MAX + 1]; | |
1005 | int len; | |
1006 | ||
1007 | cygwin_conv_to_full_posix_path (oldpath, oldfullpath); | |
1008 | cygwin_conv_to_full_posix_path (newpath, newfullpath); | |
1009 | len = strlen (oldfullpath); | |
1010 | if (newfullpath[len] == '/' | |
1011 | && !strncmp (oldfullpath, newfullpath, len)) | |
1012 | errno = EINVAL; | |
1013 | else | |
1014 | errno = EEXIST; | |
1015 | } | |
1016 | } | |
1017 | } | |
1018 | #endif | |
1019 | ||
1020 | remote_fileio_return_errno (-1); | |
1021 | } | |
1022 | else | |
1023 | remote_fileio_return_success (ret); | |
1024 | } | |
1025 | ||
1026 | static void | |
1027 | remote_fileio_func_unlink (char *buf) | |
1028 | { | |
1029 | CORE_ADDR ptrval; | |
1030 | int length, retlength; | |
1031 | char *pathname; | |
1032 | int ret; | |
1033 | struct stat st; | |
1034 | ||
1035 | /* Parameter: Ptr to pathname / length incl. trailing zero */ | |
1036 | if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length)) | |
1037 | { | |
1038 | remote_fileio_ioerror (); | |
1039 | return; | |
1040 | } | |
1041 | /* Request pathname using 'm' packet */ | |
1042 | pathname = alloca (length); | |
cfd77fa1 | 1043 | retlength = remote_read_bytes (ptrval, (gdb_byte *) pathname, length); |
449092f6 CV |
1044 | if (retlength != length) |
1045 | { | |
1046 | remote_fileio_ioerror (); | |
1047 | return; | |
1048 | } | |
1049 | ||
1050 | /* Only operate on regular files (and directories, which allows to return | |
1051 | the correct return code) */ | |
1052 | if (!stat (pathname, &st) && !S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode)) | |
1053 | { | |
1054 | remote_fileio_reply (-1, FILEIO_ENODEV); | |
1055 | return; | |
1056 | } | |
1057 | ||
1058 | remote_fio_no_longjmp = 1; | |
1059 | ret = unlink (pathname); | |
1060 | ||
1061 | if (ret == -1) | |
1062 | remote_fileio_return_errno (-1); | |
1063 | else | |
1064 | remote_fileio_return_success (ret); | |
1065 | } | |
1066 | ||
1067 | static void | |
1068 | remote_fileio_func_stat (char *buf) | |
1069 | { | |
86cc68a8 NS |
1070 | CORE_ADDR statptr, nameptr; |
1071 | int ret, namelength, retlength; | |
449092f6 | 1072 | char *pathname; |
cbcdb1f5 | 1073 | LONGEST lnum; |
449092f6 CV |
1074 | struct stat st; |
1075 | struct fio_stat fst; | |
1076 | ||
1077 | /* 1. Parameter: Ptr to pathname / length incl. trailing zero */ | |
86cc68a8 | 1078 | if (remote_fileio_extract_ptr_w_len (&buf, &nameptr, &namelength)) |
449092f6 CV |
1079 | { |
1080 | remote_fileio_ioerror (); | |
1081 | return; | |
1082 | } | |
86cc68a8 NS |
1083 | |
1084 | /* 2. Parameter: Ptr to struct stat */ | |
1085 | if (remote_fileio_extract_long (&buf, &lnum)) | |
449092f6 CV |
1086 | { |
1087 | remote_fileio_ioerror (); | |
1088 | return; | |
1089 | } | |
86cc68a8 NS |
1090 | statptr = (CORE_ADDR) lnum; |
1091 | ||
1092 | /* Request pathname using 'm' packet */ | |
1093 | pathname = alloca (namelength); | |
1094 | retlength = remote_read_bytes (nameptr, (gdb_byte *) pathname, namelength); | |
1095 | if (retlength != namelength) | |
449092f6 CV |
1096 | { |
1097 | remote_fileio_ioerror (); | |
1098 | return; | |
1099 | } | |
449092f6 CV |
1100 | |
1101 | remote_fio_no_longjmp = 1; | |
1102 | ret = stat (pathname, &st); | |
1103 | ||
1104 | if (ret == -1) | |
1105 | { | |
1106 | remote_fileio_return_errno (-1); | |
1107 | return; | |
1108 | } | |
1109 | /* Only operate on regular files and directories */ | |
1110 | if (!ret && !S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode)) | |
1111 | { | |
1112 | remote_fileio_reply (-1, FILEIO_EACCES); | |
1113 | return; | |
1114 | } | |
86cc68a8 | 1115 | if (statptr) |
449092f6 CV |
1116 | { |
1117 | remote_fileio_to_fio_stat (&st, &fst); | |
1118 | remote_fileio_to_fio_uint (0, fst.fst_dev); | |
1119 | ||
86cc68a8 NS |
1120 | retlength = remote_fileio_write_bytes (statptr, |
1121 | (gdb_byte *) &fst, sizeof fst); | |
449092f6 CV |
1122 | if (retlength != sizeof fst) |
1123 | { | |
1124 | remote_fileio_return_errno (-1); | |
1125 | return; | |
1126 | } | |
1127 | } | |
1128 | remote_fileio_return_success (ret); | |
1129 | } | |
1130 | ||
1131 | static void | |
1132 | remote_fileio_func_fstat (char *buf) | |
1133 | { | |
1134 | CORE_ADDR ptrval; | |
1135 | int fd, ret, retlength; | |
1136 | long target_fd; | |
cbcdb1f5 | 1137 | LONGEST lnum; |
449092f6 CV |
1138 | struct stat st; |
1139 | struct fio_stat fst; | |
1140 | struct timeval tv; | |
1141 | ||
1142 | /* 1. Parameter: file descriptor */ | |
1143 | if (remote_fileio_extract_int (&buf, &target_fd)) | |
1144 | { | |
1145 | remote_fileio_ioerror (); | |
1146 | return; | |
1147 | } | |
cbcdb1f5 CV |
1148 | fd = remote_fileio_map_fd ((int) target_fd); |
1149 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
1150 | { |
1151 | remote_fileio_badfd (); | |
1152 | return; | |
1153 | } | |
1154 | /* 2. Parameter: Ptr to struct stat */ | |
1155 | if (remote_fileio_extract_long (&buf, &lnum)) | |
1156 | { | |
1157 | remote_fileio_ioerror (); | |
1158 | return; | |
1159 | } | |
1160 | ptrval = (CORE_ADDR) lnum; | |
1161 | ||
1162 | remote_fio_no_longjmp = 1; | |
1163 | if (fd == FIO_FD_CONSOLE_IN || fd == FIO_FD_CONSOLE_OUT) | |
1164 | { | |
1165 | remote_fileio_to_fio_uint (1, fst.fst_dev); | |
1166 | st.st_mode = S_IFCHR | (fd == FIO_FD_CONSOLE_IN ? S_IRUSR : S_IWUSR); | |
1167 | st.st_nlink = 1; | |
d3ea6809 | 1168 | #ifdef HAVE_GETUID |
449092f6 | 1169 | st.st_uid = getuid (); |
d3ea6809 MM |
1170 | #else |
1171 | st.st_uid = 0; | |
1172 | #endif | |
1173 | #ifdef HAVE_GETGID | |
449092f6 | 1174 | st.st_gid = getgid (); |
d3ea6809 MM |
1175 | #else |
1176 | st.st_gid = 0; | |
1177 | #endif | |
449092f6 CV |
1178 | st.st_rdev = 0; |
1179 | st.st_size = 0; | |
d3ea6809 | 1180 | #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE |
449092f6 | 1181 | st.st_blksize = 512; |
d3ea6809 | 1182 | #endif |
1dd727e9 | 1183 | #if HAVE_STRUCT_STAT_ST_BLOCKS |
449092f6 | 1184 | st.st_blocks = 0; |
1dd727e9 | 1185 | #endif |
449092f6 CV |
1186 | if (!gettimeofday (&tv, NULL)) |
1187 | st.st_atime = st.st_mtime = st.st_ctime = tv.tv_sec; | |
1188 | else | |
1189 | st.st_atime = st.st_mtime = st.st_ctime = (time_t) 0; | |
1190 | ret = 0; | |
1191 | } | |
1192 | else | |
1193 | ret = fstat (fd, &st); | |
1194 | ||
1195 | if (ret == -1) | |
1196 | { | |
1197 | remote_fileio_return_errno (-1); | |
1198 | return; | |
1199 | } | |
1200 | if (ptrval) | |
1201 | { | |
1202 | remote_fileio_to_fio_stat (&st, &fst); | |
1203 | ||
cfd77fa1 | 1204 | retlength = remote_fileio_write_bytes (ptrval, (gdb_byte *) &fst, sizeof fst); |
449092f6 CV |
1205 | if (retlength != sizeof fst) |
1206 | { | |
1207 | remote_fileio_return_errno (-1); | |
1208 | return; | |
1209 | } | |
1210 | } | |
1211 | remote_fileio_return_success (ret); | |
1212 | } | |
1213 | ||
1214 | static void | |
1215 | remote_fileio_func_gettimeofday (char *buf) | |
1216 | { | |
cbcdb1f5 | 1217 | LONGEST lnum; |
449092f6 CV |
1218 | CORE_ADDR ptrval; |
1219 | int ret, retlength; | |
1220 | struct timeval tv; | |
1221 | struct fio_timeval ftv; | |
1222 | ||
1223 | /* 1. Parameter: struct timeval pointer */ | |
1224 | if (remote_fileio_extract_long (&buf, &lnum)) | |
1225 | { | |
1226 | remote_fileio_ioerror (); | |
1227 | return; | |
1228 | } | |
1229 | ptrval = (CORE_ADDR) lnum; | |
1230 | /* 2. Parameter: some pointer value... */ | |
1231 | if (remote_fileio_extract_long (&buf, &lnum)) | |
1232 | { | |
1233 | remote_fileio_ioerror (); | |
1234 | return; | |
1235 | } | |
1236 | /* ...which has to be NULL */ | |
1237 | if (lnum) | |
1238 | { | |
1239 | remote_fileio_reply (-1, FILEIO_EINVAL); | |
1240 | return; | |
1241 | } | |
1242 | ||
1243 | remote_fio_no_longjmp = 1; | |
1244 | ret = gettimeofday (&tv, NULL); | |
1245 | ||
1246 | if (ret == -1) | |
1247 | { | |
1248 | remote_fileio_return_errno (-1); | |
1249 | return; | |
1250 | } | |
1251 | ||
1252 | if (ptrval) | |
1253 | { | |
1254 | remote_fileio_to_fio_timeval (&tv, &ftv); | |
1255 | ||
cfd77fa1 | 1256 | retlength = remote_fileio_write_bytes (ptrval, (gdb_byte *) &ftv, sizeof ftv); |
449092f6 CV |
1257 | if (retlength != sizeof ftv) |
1258 | { | |
1259 | remote_fileio_return_errno (-1); | |
1260 | return; | |
1261 | } | |
1262 | } | |
1263 | remote_fileio_return_success (ret); | |
1264 | } | |
1265 | ||
1266 | static void | |
1267 | remote_fileio_func_isatty (char *buf) | |
1268 | { | |
1269 | long target_fd; | |
1270 | int fd; | |
1271 | ||
1272 | /* Parameter: file descriptor */ | |
1273 | if (remote_fileio_extract_int (&buf, &target_fd)) | |
1274 | { | |
1275 | remote_fileio_ioerror (); | |
1276 | return; | |
1277 | } | |
1278 | remote_fio_no_longjmp = 1; | |
1279 | fd = remote_fileio_map_fd ((int) target_fd); | |
1280 | remote_fileio_return_success (fd == FIO_FD_CONSOLE_IN || | |
1281 | fd == FIO_FD_CONSOLE_OUT ? 1 : 0); | |
1282 | } | |
1283 | ||
1284 | static void | |
1285 | remote_fileio_func_system (char *buf) | |
1286 | { | |
1287 | CORE_ADDR ptrval; | |
1288 | int ret, length, retlength; | |
5600ea19 | 1289 | char *cmdline = NULL; |
449092f6 CV |
1290 | |
1291 | /* Parameter: Ptr to commandline / length incl. trailing zero */ | |
1292 | if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length)) | |
1293 | { | |
1294 | remote_fileio_ioerror (); | |
1295 | return; | |
1296 | } | |
5600ea19 NS |
1297 | |
1298 | if (length) | |
449092f6 | 1299 | { |
5600ea19 NS |
1300 | /* Request commandline using 'm' packet */ |
1301 | cmdline = alloca (length); | |
1302 | retlength = remote_read_bytes (ptrval, (gdb_byte *) cmdline, length); | |
1303 | if (retlength != length) | |
1304 | { | |
1305 | remote_fileio_ioerror (); | |
1306 | return; | |
1307 | } | |
1308 | } | |
1309 | ||
1310 | /* Check if system(3) has been explicitely allowed using the | |
1311 | `set remote system-call-allowed 1' command. If length is 0, | |
1312 | indicating a NULL parameter to the system call, return zero to | |
1313 | indicate a shell is not available. Otherwise fail with EPERM. */ | |
1314 | if (!remote_fio_system_call_allowed) | |
1315 | { | |
1316 | if (!length) | |
1317 | remote_fileio_return_success (0); | |
1318 | else | |
1319 | remote_fileio_reply (-1, FILEIO_EPERM); | |
449092f6 CV |
1320 | return; |
1321 | } | |
1322 | ||
1323 | remote_fio_no_longjmp = 1; | |
1324 | ret = system (cmdline); | |
1325 | ||
5600ea19 NS |
1326 | if (!length) |
1327 | remote_fileio_return_success (ret); | |
1328 | else if (ret == -1) | |
449092f6 CV |
1329 | remote_fileio_return_errno (-1); |
1330 | else | |
1331 | remote_fileio_return_success (WEXITSTATUS (ret)); | |
1332 | } | |
1333 | ||
1334 | static struct { | |
1335 | char *name; | |
1336 | void (*func)(char *); | |
1337 | } remote_fio_func_map[] = { | |
d5d6fca5 DJ |
1338 | { "open", remote_fileio_func_open }, |
1339 | { "close", remote_fileio_func_close }, | |
1340 | { "read", remote_fileio_func_read }, | |
1341 | { "write", remote_fileio_func_write }, | |
1342 | { "lseek", remote_fileio_func_lseek }, | |
1343 | { "rename", remote_fileio_func_rename }, | |
1344 | { "unlink", remote_fileio_func_unlink }, | |
1345 | { "stat", remote_fileio_func_stat }, | |
1346 | { "fstat", remote_fileio_func_fstat }, | |
1347 | { "gettimeofday", remote_fileio_func_gettimeofday }, | |
1348 | { "isatty", remote_fileio_func_isatty }, | |
1349 | { "system", remote_fileio_func_system }, | |
1350 | { NULL, NULL } | |
449092f6 CV |
1351 | }; |
1352 | ||
1353 | static int | |
1354 | do_remote_fileio_request (struct ui_out *uiout, void *buf_arg) | |
1355 | { | |
1356 | char *buf = buf_arg; | |
1357 | char *c; | |
1358 | int idx; | |
1359 | ||
1360 | remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler); | |
1361 | ||
1362 | c = strchr (++buf, ','); | |
1363 | if (c) | |
1364 | *c++ = '\0'; | |
1365 | else | |
1366 | c = strchr (buf, '\0'); | |
1367 | for (idx = 0; remote_fio_func_map[idx].name; ++idx) | |
1368 | if (!strcmp (remote_fio_func_map[idx].name, buf)) | |
1369 | break; | |
1370 | if (!remote_fio_func_map[idx].name) /* ERROR: No such function. */ | |
1371 | return RETURN_ERROR; | |
1372 | remote_fio_func_map[idx].func (c); | |
1373 | return 0; | |
1374 | } | |
1375 | ||
ad9a8f3f NS |
1376 | /* Close any open descriptors, and reinitialize the file mapping. */ |
1377 | ||
1378 | void | |
1379 | remote_fileio_reset (void) | |
1380 | { | |
1381 | int ix; | |
1382 | ||
1383 | for (ix = 0; ix != remote_fio_data.fd_map_size; ix++) | |
1384 | { | |
1385 | int fd = remote_fio_data.fd_map[ix]; | |
1386 | ||
1387 | if (fd >= 0) | |
1388 | close (fd); | |
1389 | } | |
1390 | if (remote_fio_data.fd_map) | |
1391 | { | |
1392 | free (remote_fio_data.fd_map); | |
1393 | remote_fio_data.fd_map = NULL; | |
1394 | remote_fio_data.fd_map_size = 0; | |
1395 | } | |
1396 | } | |
1397 | ||
449092f6 CV |
1398 | void |
1399 | remote_fileio_request (char *buf) | |
1400 | { | |
1401 | int ex; | |
1402 | ||
1403 | remote_fileio_sig_init (); | |
1404 | ||
1405 | remote_fio_ctrl_c_flag = 0; | |
1406 | remote_fio_no_longjmp = 0; | |
1407 | ||
1408 | ex = catch_exceptions (uiout, do_remote_fileio_request, (void *)buf, | |
1c3c7ee7 | 1409 | RETURN_MASK_ALL); |
449092f6 CV |
1410 | switch (ex) |
1411 | { | |
1412 | case RETURN_ERROR: | |
1413 | remote_fileio_reply (-1, FILEIO_ENOSYS); | |
1414 | break; | |
1415 | case RETURN_QUIT: | |
1416 | remote_fileio_reply (-1, FILEIO_EINTR); | |
1417 | break; | |
1418 | default: | |
1419 | break; | |
1420 | } | |
1421 | ||
1422 | remote_fileio_sig_exit (); | |
1423 | } | |
1424 | ||
1425 | static void | |
1426 | set_system_call_allowed (char *args, int from_tty) | |
1427 | { | |
1428 | if (args) | |
1429 | { | |
1430 | char *arg_end; | |
1431 | int val = strtoul (args, &arg_end, 10); | |
1432 | if (*args && *arg_end == '\0') | |
1433 | { | |
1434 | remote_fio_system_call_allowed = !!val; | |
1435 | return; | |
1436 | } | |
1437 | } | |
8a3fe4f8 | 1438 | error (_("Illegal argument for \"set remote system-call-allowed\" command")); |
449092f6 CV |
1439 | } |
1440 | ||
1441 | static void | |
1442 | show_system_call_allowed (char *args, int from_tty) | |
1443 | { | |
1444 | if (args) | |
8a3fe4f8 | 1445 | error (_("Garbage after \"show remote system-call-allowed\" command: `%s'"), args); |
449092f6 CV |
1446 | printf_unfiltered ("Calling host system(3) call from target is %sallowed\n", |
1447 | remote_fio_system_call_allowed ? "" : "not "); | |
1448 | } | |
1449 | ||
1450 | void | |
1451 | initialize_remote_fileio (struct cmd_list_element *remote_set_cmdlist, | |
1452 | struct cmd_list_element *remote_show_cmdlist) | |
1453 | { | |
1454 | add_cmd ("system-call-allowed", no_class, | |
1455 | set_system_call_allowed, | |
1a966eab | 1456 | _("Set if the host system(3) call is allowed for the target."), |
449092f6 CV |
1457 | &remote_set_cmdlist); |
1458 | add_cmd ("system-call-allowed", no_class, | |
1459 | show_system_call_allowed, | |
1a966eab | 1460 | _("Show if the host system(3) call is allowed for the target."), |
449092f6 CV |
1461 | &remote_show_cmdlist); |
1462 | } |