Commit | Line | Data |
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449092f6 CV |
1 | /* Remote File-I/O communications |
2 | ||
0b302171 | 3 | Copyright (C) 2003, 2005-2012 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 | 19 | |
0df8b418 | 20 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
449092f6 CV |
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" |
b803fb0f | 31 | #include "event-loop.h" |
f7605bc2 | 32 | #include "target.h" |
0ba1096a | 33 | #include "filenames.h" |
449092f6 | 34 | |
449092f6 CV |
35 | #include <fcntl.h> |
36 | #include <sys/time.h> | |
449092f6 | 37 | #ifdef __CYGWIN__ |
c6ca3dab | 38 | #include <sys/cygwin.h> /* For cygwin_conv_path. */ |
449092f6 | 39 | #endif |
449092f6 CV |
40 | #include <signal.h> |
41 | ||
42 | static struct { | |
43 | int *fd_map; | |
44 | int fd_map_size; | |
45 | } remote_fio_data; | |
46 | ||
47 | #define FIO_FD_INVALID -1 | |
48 | #define FIO_FD_CONSOLE_IN -2 | |
49 | #define FIO_FD_CONSOLE_OUT -3 | |
50 | ||
51 | static int remote_fio_system_call_allowed = 0; | |
52 | ||
b803fb0f DJ |
53 | static struct async_signal_handler *sigint_fileio_token; |
54 | ||
449092f6 | 55 | static int |
cbcdb1f5 | 56 | remote_fileio_init_fd_map (void) |
449092f6 CV |
57 | { |
58 | int i; | |
59 | ||
60 | if (!remote_fio_data.fd_map) | |
61 | { | |
62 | remote_fio_data.fd_map = (int *) xmalloc (10 * sizeof (int)); | |
63 | remote_fio_data.fd_map_size = 10; | |
64 | remote_fio_data.fd_map[0] = FIO_FD_CONSOLE_IN; | |
65 | remote_fio_data.fd_map[1] = FIO_FD_CONSOLE_OUT; | |
66 | remote_fio_data.fd_map[2] = FIO_FD_CONSOLE_OUT; | |
67 | for (i = 3; i < 10; ++i) | |
68 | remote_fio_data.fd_map[i] = FIO_FD_INVALID; | |
69 | } | |
70 | return 3; | |
71 | } | |
72 | ||
73 | static int | |
cbcdb1f5 | 74 | remote_fileio_resize_fd_map (void) |
449092f6 | 75 | { |
9f8e6999 MG |
76 | int i = remote_fio_data.fd_map_size; |
77 | ||
449092f6 CV |
78 | if (!remote_fio_data.fd_map) |
79 | return remote_fileio_init_fd_map (); | |
80 | remote_fio_data.fd_map_size += 10; | |
81 | remote_fio_data.fd_map = | |
82 | (int *) xrealloc (remote_fio_data.fd_map, | |
83 | remote_fio_data.fd_map_size * sizeof (int)); | |
9f8e6999 MG |
84 | for (; i < remote_fio_data.fd_map_size; i++) |
85 | remote_fio_data.fd_map[i] = FIO_FD_INVALID; | |
449092f6 CV |
86 | return remote_fio_data.fd_map_size - 10; |
87 | } | |
88 | ||
89 | static int | |
cbcdb1f5 | 90 | remote_fileio_next_free_fd (void) |
449092f6 CV |
91 | { |
92 | int i; | |
93 | ||
94 | for (i = 0; i < remote_fio_data.fd_map_size; ++i) | |
95 | if (remote_fio_data.fd_map[i] == FIO_FD_INVALID) | |
96 | return i; | |
97 | return remote_fileio_resize_fd_map (); | |
98 | } | |
99 | ||
100 | static int | |
101 | remote_fileio_fd_to_targetfd (int fd) | |
102 | { | |
103 | int target_fd = remote_fileio_next_free_fd (); | |
123f5f96 | 104 | |
449092f6 CV |
105 | remote_fio_data.fd_map[target_fd] = fd; |
106 | return target_fd; | |
107 | } | |
108 | ||
109 | static int | |
110 | remote_fileio_map_fd (int target_fd) | |
111 | { | |
112 | remote_fileio_init_fd_map (); | |
113 | if (target_fd < 0 || target_fd >= remote_fio_data.fd_map_size) | |
114 | return FIO_FD_INVALID; | |
115 | return remote_fio_data.fd_map[target_fd]; | |
116 | } | |
117 | ||
118 | static void | |
119 | remote_fileio_close_target_fd (int target_fd) | |
120 | { | |
121 | remote_fileio_init_fd_map (); | |
122 | if (target_fd >= 0 && target_fd < remote_fio_data.fd_map_size) | |
123 | remote_fio_data.fd_map[target_fd] = FIO_FD_INVALID; | |
124 | } | |
125 | ||
126 | static int | |
127 | remote_fileio_oflags_to_host (long flags) | |
128 | { | |
129 | int hflags = 0; | |
130 | ||
131 | if (flags & FILEIO_O_CREAT) | |
132 | hflags |= O_CREAT; | |
133 | if (flags & FILEIO_O_EXCL) | |
134 | hflags |= O_EXCL; | |
135 | if (flags & FILEIO_O_TRUNC) | |
136 | hflags |= O_TRUNC; | |
137 | if (flags & FILEIO_O_APPEND) | |
138 | hflags |= O_APPEND; | |
139 | if (flags & FILEIO_O_RDONLY) | |
140 | hflags |= O_RDONLY; | |
141 | if (flags & FILEIO_O_WRONLY) | |
142 | hflags |= O_WRONLY; | |
143 | if (flags & FILEIO_O_RDWR) | |
144 | hflags |= O_RDWR; | |
145 | /* On systems supporting binary and text mode, always open files in | |
0df8b418 | 146 | binary mode. */ |
449092f6 CV |
147 | #ifdef O_BINARY |
148 | hflags |= O_BINARY; | |
149 | #endif | |
150 | return hflags; | |
151 | } | |
152 | ||
153 | static mode_t | |
154 | remote_fileio_mode_to_host (long mode, int open_call) | |
155 | { | |
156 | mode_t hmode = 0; | |
157 | ||
158 | if (!open_call) | |
159 | { | |
160 | if (mode & FILEIO_S_IFREG) | |
161 | hmode |= S_IFREG; | |
162 | if (mode & FILEIO_S_IFDIR) | |
163 | hmode |= S_IFDIR; | |
164 | if (mode & FILEIO_S_IFCHR) | |
165 | hmode |= S_IFCHR; | |
166 | } | |
167 | if (mode & FILEIO_S_IRUSR) | |
168 | hmode |= S_IRUSR; | |
169 | if (mode & FILEIO_S_IWUSR) | |
170 | hmode |= S_IWUSR; | |
171 | if (mode & FILEIO_S_IXUSR) | |
172 | hmode |= S_IXUSR; | |
9b265ec2 | 173 | #ifdef S_IRGRP |
449092f6 CV |
174 | if (mode & FILEIO_S_IRGRP) |
175 | hmode |= S_IRGRP; | |
9b265ec2 MM |
176 | #endif |
177 | #ifdef S_IWGRP | |
449092f6 CV |
178 | if (mode & FILEIO_S_IWGRP) |
179 | hmode |= S_IWGRP; | |
9b265ec2 MM |
180 | #endif |
181 | #ifdef S_IXGRP | |
449092f6 CV |
182 | if (mode & FILEIO_S_IXGRP) |
183 | hmode |= S_IXGRP; | |
9b265ec2 | 184 | #endif |
449092f6 CV |
185 | if (mode & FILEIO_S_IROTH) |
186 | hmode |= S_IROTH; | |
9b265ec2 | 187 | #ifdef S_IWOTH |
449092f6 CV |
188 | if (mode & FILEIO_S_IWOTH) |
189 | hmode |= S_IWOTH; | |
9b265ec2 MM |
190 | #endif |
191 | #ifdef S_IXOTH | |
449092f6 CV |
192 | if (mode & FILEIO_S_IXOTH) |
193 | hmode |= S_IXOTH; | |
9b265ec2 | 194 | #endif |
449092f6 CV |
195 | return hmode; |
196 | } | |
197 | ||
cbcdb1f5 | 198 | static LONGEST |
449092f6 CV |
199 | remote_fileio_mode_to_target (mode_t mode) |
200 | { | |
201 | mode_t tmode = 0; | |
202 | ||
9c7deb13 | 203 | if (S_ISREG(mode)) |
449092f6 | 204 | tmode |= FILEIO_S_IFREG; |
9c7deb13 | 205 | if (S_ISDIR(mode)) |
449092f6 | 206 | tmode |= FILEIO_S_IFDIR; |
9c7deb13 | 207 | if (S_ISCHR(mode)) |
449092f6 CV |
208 | tmode |= FILEIO_S_IFCHR; |
209 | if (mode & S_IRUSR) | |
210 | tmode |= FILEIO_S_IRUSR; | |
211 | if (mode & S_IWUSR) | |
212 | tmode |= FILEIO_S_IWUSR; | |
213 | if (mode & S_IXUSR) | |
214 | tmode |= FILEIO_S_IXUSR; | |
9b265ec2 | 215 | #ifdef S_IRGRP |
449092f6 CV |
216 | if (mode & S_IRGRP) |
217 | tmode |= FILEIO_S_IRGRP; | |
9b265ec2 MM |
218 | #endif |
219 | #ifdef S_IWRGRP | |
449092f6 CV |
220 | if (mode & S_IWGRP) |
221 | tmode |= FILEIO_S_IWGRP; | |
9b265ec2 MM |
222 | #endif |
223 | #ifdef S_IXGRP | |
449092f6 CV |
224 | if (mode & S_IXGRP) |
225 | tmode |= FILEIO_S_IXGRP; | |
9b265ec2 | 226 | #endif |
449092f6 CV |
227 | if (mode & S_IROTH) |
228 | tmode |= FILEIO_S_IROTH; | |
9b265ec2 | 229 | #ifdef S_IWOTH |
449092f6 CV |
230 | if (mode & S_IWOTH) |
231 | tmode |= FILEIO_S_IWOTH; | |
9b265ec2 MM |
232 | #endif |
233 | #ifdef S_IXOTH | |
449092f6 CV |
234 | if (mode & S_IXOTH) |
235 | tmode |= FILEIO_S_IXOTH; | |
9b265ec2 | 236 | #endif |
449092f6 CV |
237 | return tmode; |
238 | } | |
239 | ||
240 | static int | |
241 | remote_fileio_errno_to_target (int error) | |
242 | { | |
243 | switch (error) | |
244 | { | |
245 | case EPERM: | |
246 | return FILEIO_EPERM; | |
247 | case ENOENT: | |
248 | return FILEIO_ENOENT; | |
249 | case EINTR: | |
250 | return FILEIO_EINTR; | |
251 | case EIO: | |
252 | return FILEIO_EIO; | |
253 | case EBADF: | |
254 | return FILEIO_EBADF; | |
255 | case EACCES: | |
256 | return FILEIO_EACCES; | |
257 | case EFAULT: | |
258 | return FILEIO_EFAULT; | |
259 | case EBUSY: | |
260 | return FILEIO_EBUSY; | |
261 | case EEXIST: | |
262 | return FILEIO_EEXIST; | |
263 | case ENODEV: | |
264 | return FILEIO_ENODEV; | |
265 | case ENOTDIR: | |
266 | return FILEIO_ENOTDIR; | |
267 | case EISDIR: | |
268 | return FILEIO_EISDIR; | |
269 | case EINVAL: | |
270 | return FILEIO_EINVAL; | |
271 | case ENFILE: | |
272 | return FILEIO_ENFILE; | |
273 | case EMFILE: | |
274 | return FILEIO_EMFILE; | |
275 | case EFBIG: | |
276 | return FILEIO_EFBIG; | |
277 | case ENOSPC: | |
278 | return FILEIO_ENOSPC; | |
279 | case ESPIPE: | |
280 | return FILEIO_ESPIPE; | |
281 | case EROFS: | |
282 | return FILEIO_EROFS; | |
283 | case ENOSYS: | |
284 | return FILEIO_ENOSYS; | |
285 | case ENAMETOOLONG: | |
286 | return FILEIO_ENAMETOOLONG; | |
287 | } | |
288 | return FILEIO_EUNKNOWN; | |
289 | } | |
290 | ||
291 | static int | |
292 | remote_fileio_seek_flag_to_host (long num, int *flag) | |
293 | { | |
294 | if (!flag) | |
295 | return 0; | |
296 | switch (num) | |
297 | { | |
298 | case FILEIO_SEEK_SET: | |
299 | *flag = SEEK_SET; | |
300 | break; | |
301 | case FILEIO_SEEK_CUR: | |
302 | *flag = SEEK_CUR; | |
303 | break; | |
304 | case FILEIO_SEEK_END: | |
305 | *flag = SEEK_END; | |
306 | break; | |
307 | default: | |
308 | return -1; | |
309 | } | |
310 | return 0; | |
311 | } | |
312 | ||
313 | static int | |
cbcdb1f5 | 314 | remote_fileio_extract_long (char **buf, LONGEST *retlong) |
449092f6 CV |
315 | { |
316 | char *c; | |
317 | int sign = 1; | |
318 | ||
319 | if (!buf || !*buf || !**buf || !retlong) | |
320 | return -1; | |
321 | c = strchr (*buf, ','); | |
322 | if (c) | |
323 | *c++ = '\0'; | |
324 | else | |
325 | c = strchr (*buf, '\0'); | |
326 | while (strchr ("+-", **buf)) | |
327 | { | |
328 | if (**buf == '-') | |
329 | sign = -sign; | |
330 | ++*buf; | |
331 | } | |
332 | for (*retlong = 0; **buf; ++*buf) | |
333 | { | |
334 | *retlong <<= 4; | |
335 | if (**buf >= '0' && **buf <= '9') | |
336 | *retlong += **buf - '0'; | |
337 | else if (**buf >= 'a' && **buf <= 'f') | |
338 | *retlong += **buf - 'a' + 10; | |
339 | else if (**buf >= 'A' && **buf <= 'F') | |
340 | *retlong += **buf - 'A' + 10; | |
341 | else | |
342 | return -1; | |
343 | } | |
344 | *retlong *= sign; | |
345 | *buf = c; | |
346 | return 0; | |
347 | } | |
348 | ||
349 | static int | |
350 | remote_fileio_extract_int (char **buf, long *retint) | |
351 | { | |
352 | int ret; | |
cbcdb1f5 | 353 | LONGEST retlong; |
449092f6 CV |
354 | |
355 | if (!retint) | |
356 | return -1; | |
cbcdb1f5 CV |
357 | ret = remote_fileio_extract_long (buf, &retlong); |
358 | if (!ret) | |
449092f6 CV |
359 | *retint = (long) retlong; |
360 | return ret; | |
361 | } | |
362 | ||
363 | static int | |
364 | remote_fileio_extract_ptr_w_len (char **buf, CORE_ADDR *ptrval, int *length) | |
365 | { | |
366 | char *c; | |
cbcdb1f5 | 367 | LONGEST retlong; |
449092f6 CV |
368 | |
369 | if (!buf || !*buf || !**buf || !ptrval || !length) | |
370 | return -1; | |
371 | c = strchr (*buf, '/'); | |
372 | if (!c) | |
373 | return -1; | |
374 | *c++ = '\0'; | |
375 | if (remote_fileio_extract_long (buf, &retlong)) | |
376 | return -1; | |
377 | *ptrval = (CORE_ADDR) retlong; | |
378 | *buf = c; | |
379 | if (remote_fileio_extract_long (buf, &retlong)) | |
380 | return -1; | |
381 | *length = (int) retlong; | |
382 | return 0; | |
383 | } | |
384 | ||
0df8b418 | 385 | /* Convert to big endian. */ |
449092f6 | 386 | static void |
cbcdb1f5 | 387 | remote_fileio_to_be (LONGEST num, char *buf, int bytes) |
449092f6 CV |
388 | { |
389 | int i; | |
390 | ||
391 | for (i = 0; i < bytes; ++i) | |
392 | buf[i] = (num >> (8 * (bytes - i - 1))) & 0xff; | |
393 | } | |
394 | ||
449092f6 CV |
395 | static void |
396 | remote_fileio_to_fio_uint (long num, fio_uint_t fnum) | |
397 | { | |
cbcdb1f5 | 398 | remote_fileio_to_be ((LONGEST) num, (char *) fnum, 4); |
449092f6 CV |
399 | } |
400 | ||
401 | static void | |
402 | remote_fileio_to_fio_mode (mode_t num, fio_mode_t fnum) | |
403 | { | |
404 | remote_fileio_to_be (remote_fileio_mode_to_target(num), (char *) fnum, 4); | |
405 | } | |
406 | ||
407 | static void | |
408 | remote_fileio_to_fio_time (time_t num, fio_time_t fnum) | |
409 | { | |
cbcdb1f5 | 410 | remote_fileio_to_be ((LONGEST) num, (char *) fnum, 4); |
449092f6 CV |
411 | } |
412 | ||
413 | static void | |
cbcdb1f5 | 414 | remote_fileio_to_fio_long (LONGEST num, fio_long_t fnum) |
449092f6 CV |
415 | { |
416 | remote_fileio_to_be (num, (char *) fnum, 8); | |
417 | } | |
418 | ||
419 | static void | |
cbcdb1f5 | 420 | remote_fileio_to_fio_ulong (LONGEST num, fio_ulong_t fnum) |
449092f6 CV |
421 | { |
422 | remote_fileio_to_be (num, (char *) fnum, 8); | |
423 | } | |
424 | ||
425 | static void | |
426 | remote_fileio_to_fio_stat (struct stat *st, struct fio_stat *fst) | |
427 | { | |
d3ea6809 MM |
428 | LONGEST blksize; |
429 | ||
0df8b418 | 430 | /* `st_dev' is set in the calling function. */ |
449092f6 CV |
431 | remote_fileio_to_fio_uint ((long) st->st_ino, fst->fst_ino); |
432 | remote_fileio_to_fio_mode (st->st_mode, fst->fst_mode); | |
433 | remote_fileio_to_fio_uint ((long) st->st_nlink, fst->fst_nlink); | |
434 | remote_fileio_to_fio_uint ((long) st->st_uid, fst->fst_uid); | |
435 | remote_fileio_to_fio_uint ((long) st->st_gid, fst->fst_gid); | |
436 | remote_fileio_to_fio_uint ((long) st->st_rdev, fst->fst_rdev); | |
cbcdb1f5 | 437 | remote_fileio_to_fio_ulong ((LONGEST) st->st_size, fst->fst_size); |
d3ea6809 MM |
438 | #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE |
439 | blksize = st->st_blksize; | |
440 | #else | |
441 | blksize = 512; | |
442 | #endif | |
443 | remote_fileio_to_fio_ulong (blksize, fst->fst_blksize); | |
1dd727e9 | 444 | #if HAVE_STRUCT_STAT_ST_BLOCKS |
cbcdb1f5 | 445 | remote_fileio_to_fio_ulong ((LONGEST) st->st_blocks, fst->fst_blocks); |
1dd727e9 EZ |
446 | #else |
447 | /* FIXME: This is correct for DJGPP, but other systems that don't | |
448 | have st_blocks, if any, might prefer 512 instead of st_blksize. | |
449 | (eliz, 30-12-2003) */ | |
d3ea6809 MM |
450 | remote_fileio_to_fio_ulong (((LONGEST) st->st_size + blksize - 1) |
451 | / blksize, | |
1dd727e9 EZ |
452 | fst->fst_blocks); |
453 | #endif | |
449092f6 CV |
454 | remote_fileio_to_fio_time (st->st_atime, fst->fst_atime); |
455 | remote_fileio_to_fio_time (st->st_mtime, fst->fst_mtime); | |
456 | remote_fileio_to_fio_time (st->st_ctime, fst->fst_ctime); | |
457 | } | |
458 | ||
459 | static void | |
460 | remote_fileio_to_fio_timeval (struct timeval *tv, struct fio_timeval *ftv) | |
461 | { | |
462 | remote_fileio_to_fio_time (tv->tv_sec, ftv->ftv_sec); | |
463 | remote_fileio_to_fio_long (tv->tv_usec, ftv->ftv_usec); | |
464 | } | |
465 | ||
466 | static int remote_fio_ctrl_c_flag = 0; | |
467 | static int remote_fio_no_longjmp = 0; | |
449092f6 CV |
468 | |
469 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
470 | static struct sigaction remote_fio_sa; | |
471 | static struct sigaction remote_fio_osa; | |
472 | #else | |
473 | static void (*remote_fio_ofunc)(int); | |
474 | #endif | |
475 | ||
476 | static void | |
cbcdb1f5 | 477 | remote_fileio_sig_init (void) |
449092f6 CV |
478 | { |
479 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
480 | remote_fio_sa.sa_handler = SIG_IGN; | |
481 | sigemptyset (&remote_fio_sa.sa_mask); | |
482 | remote_fio_sa.sa_flags = 0; | |
483 | sigaction (SIGINT, &remote_fio_sa, &remote_fio_osa); | |
484 | #else | |
485 | remote_fio_ofunc = signal (SIGINT, SIG_IGN); | |
486 | #endif | |
487 | } | |
488 | ||
489 | static void | |
490 | remote_fileio_sig_set (void (*sigint_func)(int)) | |
491 | { | |
492 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
493 | remote_fio_sa.sa_handler = sigint_func; | |
494 | sigemptyset (&remote_fio_sa.sa_mask); | |
495 | remote_fio_sa.sa_flags = 0; | |
496 | sigaction (SIGINT, &remote_fio_sa, NULL); | |
497 | #else | |
498 | signal (SIGINT, sigint_func); | |
499 | #endif | |
500 | } | |
501 | ||
502 | static void | |
cbcdb1f5 | 503 | remote_fileio_sig_exit (void) |
449092f6 CV |
504 | { |
505 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
506 | sigaction (SIGINT, &remote_fio_osa, NULL); | |
507 | #else | |
508 | signal (SIGINT, remote_fio_ofunc); | |
509 | #endif | |
510 | } | |
511 | ||
b803fb0f DJ |
512 | static void |
513 | async_remote_fileio_interrupt (gdb_client_data arg) | |
514 | { | |
515 | deprecated_throw_reason (RETURN_QUIT); | |
516 | } | |
517 | ||
449092f6 CV |
518 | static void |
519 | remote_fileio_ctrl_c_signal_handler (int signo) | |
520 | { | |
521 | remote_fileio_sig_set (SIG_IGN); | |
522 | remote_fio_ctrl_c_flag = 1; | |
523 | if (!remote_fio_no_longjmp) | |
b803fb0f | 524 | gdb_call_async_signal_handler (sigint_fileio_token, 1); |
449092f6 CV |
525 | remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler); |
526 | } | |
527 | ||
528 | static void | |
529 | remote_fileio_reply (int retcode, int error) | |
530 | { | |
531 | char buf[32]; | |
532 | ||
533 | remote_fileio_sig_set (SIG_IGN); | |
534 | strcpy (buf, "F"); | |
535 | if (retcode < 0) | |
536 | { | |
537 | strcat (buf, "-"); | |
538 | retcode = -retcode; | |
539 | } | |
540 | sprintf (buf + strlen (buf), "%x", retcode); | |
541 | if (error || remote_fio_ctrl_c_flag) | |
542 | { | |
543 | if (error && remote_fio_ctrl_c_flag) | |
544 | error = FILEIO_EINTR; | |
545 | if (error < 0) | |
546 | { | |
547 | strcat (buf, "-"); | |
548 | error = -error; | |
549 | } | |
550 | sprintf (buf + strlen (buf), ",%x", error); | |
551 | if (remote_fio_ctrl_c_flag) | |
552 | strcat (buf, ",C"); | |
553 | } | |
554 | remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler); | |
555 | putpkt (buf); | |
556 | } | |
557 | ||
558 | static void | |
cbcdb1f5 | 559 | remote_fileio_ioerror (void) |
449092f6 CV |
560 | { |
561 | remote_fileio_reply (-1, FILEIO_EIO); | |
562 | } | |
563 | ||
564 | static void | |
cbcdb1f5 | 565 | remote_fileio_badfd (void) |
449092f6 CV |
566 | { |
567 | remote_fileio_reply (-1, FILEIO_EBADF); | |
568 | } | |
569 | ||
570 | static void | |
571 | remote_fileio_return_errno (int retcode) | |
572 | { | |
3e43a32a MS |
573 | remote_fileio_reply (retcode, retcode < 0 |
574 | ? remote_fileio_errno_to_target (errno) : 0); | |
449092f6 CV |
575 | } |
576 | ||
577 | static void | |
578 | remote_fileio_return_success (int retcode) | |
579 | { | |
580 | remote_fileio_reply (retcode, 0); | |
581 | } | |
582 | ||
449092f6 CV |
583 | static void |
584 | remote_fileio_func_open (char *buf) | |
585 | { | |
586 | CORE_ADDR ptrval; | |
f7605bc2 | 587 | int length; |
449092f6 CV |
588 | long num; |
589 | int flags, fd; | |
590 | mode_t mode; | |
591 | char *pathname; | |
592 | struct stat st; | |
593 | ||
0df8b418 | 594 | /* 1. Parameter: Ptr to pathname / length incl. trailing zero. */ |
449092f6 CV |
595 | if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length)) |
596 | { | |
597 | remote_fileio_ioerror (); | |
598 | return; | |
599 | } | |
600 | /* 2. Parameter: open flags */ | |
601 | if (remote_fileio_extract_int (&buf, &num)) | |
602 | { | |
603 | remote_fileio_ioerror (); | |
604 | return; | |
605 | } | |
606 | flags = remote_fileio_oflags_to_host (num); | |
607 | /* 3. Parameter: open mode */ | |
608 | if (remote_fileio_extract_int (&buf, &num)) | |
609 | { | |
610 | remote_fileio_ioerror (); | |
611 | return; | |
612 | } | |
613 | mode = remote_fileio_mode_to_host (num, 1); | |
614 | ||
f7605bc2 | 615 | /* Request pathname. */ |
449092f6 | 616 | pathname = alloca (length); |
f7605bc2 | 617 | if (target_read_memory (ptrval, (gdb_byte *) pathname, length) != 0) |
449092f6 CV |
618 | { |
619 | remote_fileio_ioerror (); | |
620 | return; | |
621 | } | |
622 | ||
623 | /* Check if pathname exists and is not a regular file or directory. If so, | |
624 | return an appropriate error code. Same for trying to open directories | |
0df8b418 | 625 | for writing. */ |
449092f6 CV |
626 | if (!stat (pathname, &st)) |
627 | { | |
628 | if (!S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode)) | |
629 | { | |
630 | remote_fileio_reply (-1, FILEIO_ENODEV); | |
631 | return; | |
632 | } | |
633 | if (S_ISDIR (st.st_mode) | |
634 | && ((flags & O_WRONLY) == O_WRONLY || (flags & O_RDWR) == O_RDWR)) | |
635 | { | |
636 | remote_fileio_reply (-1, FILEIO_EISDIR); | |
637 | return; | |
638 | } | |
639 | } | |
640 | ||
641 | remote_fio_no_longjmp = 1; | |
642 | fd = open (pathname, flags, mode); | |
643 | if (fd < 0) | |
644 | { | |
645 | remote_fileio_return_errno (-1); | |
646 | return; | |
647 | } | |
648 | ||
649 | fd = remote_fileio_fd_to_targetfd (fd); | |
650 | remote_fileio_return_success (fd); | |
651 | } | |
652 | ||
653 | static void | |
654 | remote_fileio_func_close (char *buf) | |
655 | { | |
656 | long num; | |
657 | int fd; | |
658 | ||
659 | /* Parameter: file descriptor */ | |
660 | if (remote_fileio_extract_int (&buf, &num)) | |
661 | { | |
662 | remote_fileio_ioerror (); | |
663 | return; | |
664 | } | |
cbcdb1f5 CV |
665 | fd = remote_fileio_map_fd ((int) num); |
666 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
667 | { |
668 | remote_fileio_badfd (); | |
669 | return; | |
670 | } | |
671 | ||
672 | remote_fio_no_longjmp = 1; | |
673 | if (fd != FIO_FD_CONSOLE_IN && fd != FIO_FD_CONSOLE_OUT && close (fd)) | |
674 | remote_fileio_return_errno (-1); | |
675 | remote_fileio_close_target_fd ((int) num); | |
676 | remote_fileio_return_success (0); | |
677 | } | |
678 | ||
679 | static void | |
680 | remote_fileio_func_read (char *buf) | |
681 | { | |
682 | long target_fd, num; | |
cbcdb1f5 | 683 | LONGEST lnum; |
449092f6 | 684 | CORE_ADDR ptrval; |
22e048c9 | 685 | int fd, ret; |
cfd77fa1 | 686 | gdb_byte *buffer; |
449092f6 CV |
687 | size_t length; |
688 | off_t old_offset, new_offset; | |
689 | ||
690 | /* 1. Parameter: file descriptor */ | |
691 | if (remote_fileio_extract_int (&buf, &target_fd)) | |
692 | { | |
693 | remote_fileio_ioerror (); | |
694 | return; | |
695 | } | |
cbcdb1f5 CV |
696 | fd = remote_fileio_map_fd ((int) target_fd); |
697 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
698 | { |
699 | remote_fileio_badfd (); | |
700 | return; | |
701 | } | |
702 | /* 2. Parameter: buffer pointer */ | |
703 | if (remote_fileio_extract_long (&buf, &lnum)) | |
704 | { | |
705 | remote_fileio_ioerror (); | |
706 | return; | |
707 | } | |
708 | ptrval = (CORE_ADDR) lnum; | |
709 | /* 3. Parameter: buffer length */ | |
710 | if (remote_fileio_extract_int (&buf, &num)) | |
711 | { | |
712 | remote_fileio_ioerror (); | |
713 | return; | |
714 | } | |
715 | length = (size_t) num; | |
716 | ||
717 | switch (fd) | |
718 | { | |
719 | case FIO_FD_CONSOLE_OUT: | |
720 | remote_fileio_badfd (); | |
721 | return; | |
722 | case FIO_FD_CONSOLE_IN: | |
723 | { | |
724 | static char *remaining_buf = NULL; | |
725 | static int remaining_length = 0; | |
726 | ||
b86ab4ff | 727 | buffer = (gdb_byte *) xmalloc (16384); |
449092f6 CV |
728 | if (remaining_buf) |
729 | { | |
730 | remote_fio_no_longjmp = 1; | |
731 | if (remaining_length > length) | |
732 | { | |
733 | memcpy (buffer, remaining_buf, length); | |
734 | memmove (remaining_buf, remaining_buf + length, | |
735 | remaining_length - length); | |
736 | remaining_length -= length; | |
737 | ret = length; | |
738 | } | |
739 | else | |
740 | { | |
741 | memcpy (buffer, remaining_buf, remaining_length); | |
742 | xfree (remaining_buf); | |
743 | remaining_buf = NULL; | |
744 | ret = remaining_length; | |
745 | } | |
746 | } | |
747 | else | |
748 | { | |
b86ab4ff DJ |
749 | /* Windows (at least XP and Server 2003) has difficulty |
750 | with large reads from consoles. If a handle is | |
751 | backed by a real console device, overly large reads | |
752 | from the handle will fail and set errno == ENOMEM. | |
753 | On a Windows Server 2003 system where I tested, | |
754 | reading 26608 bytes from the console was OK, but | |
755 | anything above 26609 bytes would fail. The limit has | |
756 | been observed to vary on different systems. So, we | |
757 | limit this read to something smaller than that - by a | |
758 | safe margin, in case the limit depends on system | |
759 | resources or version. */ | |
760 | ret = ui_file_read (gdb_stdtargin, (char *) buffer, 16383); | |
449092f6 CV |
761 | remote_fio_no_longjmp = 1; |
762 | if (ret > 0 && (size_t)ret > length) | |
763 | { | |
764 | remaining_buf = (char *) xmalloc (ret - length); | |
765 | remaining_length = ret - length; | |
766 | memcpy (remaining_buf, buffer + length, remaining_length); | |
767 | ret = length; | |
768 | } | |
769 | } | |
770 | } | |
771 | break; | |
772 | default: | |
cfd77fa1 | 773 | buffer = (gdb_byte *) xmalloc (length); |
449092f6 CV |
774 | /* POSIX defines EINTR behaviour of read in a weird way. It's allowed |
775 | for read() to return -1 even if "some" bytes have been read. It | |
776 | has been corrected in SUSv2 but that doesn't help us much... | |
777 | Therefore a complete solution must check how many bytes have been | |
778 | read on EINTR to return a more reliable value to the target */ | |
779 | old_offset = lseek (fd, 0, SEEK_CUR); | |
780 | remote_fio_no_longjmp = 1; | |
781 | ret = read (fd, buffer, length); | |
782 | if (ret < 0 && errno == EINTR) | |
783 | { | |
784 | new_offset = lseek (fd, 0, SEEK_CUR); | |
785 | /* If some data has been read, return the number of bytes read. | |
0df8b418 | 786 | The Ctrl-C flag is set in remote_fileio_reply() anyway. */ |
449092f6 CV |
787 | if (old_offset != new_offset) |
788 | ret = new_offset - old_offset; | |
789 | } | |
790 | break; | |
791 | } | |
792 | ||
793 | if (ret > 0) | |
794 | { | |
f7605bc2 PA |
795 | errno = target_write_memory (ptrval, buffer, ret); |
796 | if (errno != 0) | |
797 | ret = -1; | |
449092f6 CV |
798 | } |
799 | ||
800 | if (ret < 0) | |
801 | remote_fileio_return_errno (-1); | |
802 | else | |
803 | remote_fileio_return_success (ret); | |
804 | ||
805 | xfree (buffer); | |
806 | } | |
807 | ||
808 | static void | |
809 | remote_fileio_func_write (char *buf) | |
810 | { | |
811 | long target_fd, num; | |
cbcdb1f5 | 812 | LONGEST lnum; |
449092f6 | 813 | CORE_ADDR ptrval; |
f7605bc2 | 814 | int fd, ret; |
cfd77fa1 | 815 | gdb_byte *buffer; |
449092f6 CV |
816 | size_t length; |
817 | ||
818 | /* 1. Parameter: file descriptor */ | |
819 | if (remote_fileio_extract_int (&buf, &target_fd)) | |
820 | { | |
821 | remote_fileio_ioerror (); | |
822 | return; | |
823 | } | |
cbcdb1f5 CV |
824 | fd = remote_fileio_map_fd ((int) target_fd); |
825 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
826 | { |
827 | remote_fileio_badfd (); | |
828 | return; | |
829 | } | |
830 | /* 2. Parameter: buffer pointer */ | |
831 | if (remote_fileio_extract_long (&buf, &lnum)) | |
832 | { | |
833 | remote_fileio_ioerror (); | |
834 | return; | |
835 | } | |
836 | ptrval = (CORE_ADDR) lnum; | |
837 | /* 3. Parameter: buffer length */ | |
838 | if (remote_fileio_extract_int (&buf, &num)) | |
839 | { | |
840 | remote_fileio_ioerror (); | |
841 | return; | |
842 | } | |
843 | length = (size_t) num; | |
844 | ||
cfd77fa1 | 845 | buffer = (gdb_byte *) xmalloc (length); |
f7605bc2 | 846 | if (target_read_memory (ptrval, buffer, length) != 0) |
449092f6 CV |
847 | { |
848 | xfree (buffer); | |
849 | remote_fileio_ioerror (); | |
850 | return; | |
851 | } | |
852 | ||
853 | remote_fio_no_longjmp = 1; | |
854 | switch (fd) | |
855 | { | |
856 | case FIO_FD_CONSOLE_IN: | |
857 | remote_fileio_badfd (); | |
1ed489bd | 858 | xfree (buffer); |
449092f6 CV |
859 | return; |
860 | case FIO_FD_CONSOLE_OUT: | |
cfd77fa1 DJ |
861 | ui_file_write (target_fd == 1 ? gdb_stdtarg : gdb_stdtargerr, |
862 | (char *) buffer, length); | |
449092f6 CV |
863 | gdb_flush (target_fd == 1 ? gdb_stdtarg : gdb_stdtargerr); |
864 | ret = length; | |
865 | break; | |
866 | default: | |
867 | ret = write (fd, buffer, length); | |
868 | if (ret < 0 && errno == EACCES) | |
3e43a32a | 869 | errno = EBADF; /* Cygwin returns EACCESS when writing to a |
0df8b418 | 870 | R/O file. */ |
449092f6 CV |
871 | break; |
872 | } | |
873 | ||
874 | if (ret < 0) | |
875 | remote_fileio_return_errno (-1); | |
876 | else | |
877 | remote_fileio_return_success (ret); | |
878 | ||
879 | xfree (buffer); | |
880 | } | |
881 | ||
882 | static void | |
883 | remote_fileio_func_lseek (char *buf) | |
884 | { | |
885 | long num; | |
cbcdb1f5 | 886 | LONGEST lnum; |
449092f6 CV |
887 | int fd, flag; |
888 | off_t offset, ret; | |
889 | ||
890 | /* 1. Parameter: file descriptor */ | |
891 | if (remote_fileio_extract_int (&buf, &num)) | |
892 | { | |
893 | remote_fileio_ioerror (); | |
894 | return; | |
895 | } | |
cbcdb1f5 CV |
896 | fd = remote_fileio_map_fd ((int) num); |
897 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
898 | { |
899 | remote_fileio_badfd (); | |
900 | return; | |
901 | } | |
902 | else if (fd == FIO_FD_CONSOLE_IN || fd == FIO_FD_CONSOLE_OUT) | |
903 | { | |
904 | remote_fileio_reply (-1, FILEIO_ESPIPE); | |
905 | return; | |
906 | } | |
907 | ||
908 | /* 2. Parameter: offset */ | |
909 | if (remote_fileio_extract_long (&buf, &lnum)) | |
910 | { | |
911 | remote_fileio_ioerror (); | |
912 | return; | |
913 | } | |
914 | offset = (off_t) lnum; | |
915 | /* 3. Parameter: flag */ | |
916 | if (remote_fileio_extract_int (&buf, &num)) | |
917 | { | |
918 | remote_fileio_ioerror (); | |
919 | return; | |
920 | } | |
921 | if (remote_fileio_seek_flag_to_host (num, &flag)) | |
922 | { | |
923 | remote_fileio_reply (-1, FILEIO_EINVAL); | |
924 | return; | |
925 | } | |
926 | ||
927 | remote_fio_no_longjmp = 1; | |
928 | ret = lseek (fd, offset, flag); | |
929 | ||
930 | if (ret == (off_t) -1) | |
931 | remote_fileio_return_errno (-1); | |
932 | else | |
933 | remote_fileio_return_success (ret); | |
934 | } | |
935 | ||
936 | static void | |
937 | remote_fileio_func_rename (char *buf) | |
938 | { | |
86cc68a8 | 939 | CORE_ADDR old_ptr, new_ptr; |
f7605bc2 | 940 | int old_len, new_len; |
449092f6 CV |
941 | char *oldpath, *newpath; |
942 | int ret, of, nf; | |
943 | struct stat ost, nst; | |
944 | ||
945 | /* 1. Parameter: Ptr to oldpath / length incl. trailing zero */ | |
86cc68a8 | 946 | if (remote_fileio_extract_ptr_w_len (&buf, &old_ptr, &old_len)) |
449092f6 CV |
947 | { |
948 | remote_fileio_ioerror (); | |
949 | return; | |
950 | } | |
86cc68a8 NS |
951 | |
952 | /* 2. Parameter: Ptr to newpath / length incl. trailing zero */ | |
953 | if (remote_fileio_extract_ptr_w_len (&buf, &new_ptr, &new_len)) | |
449092f6 CV |
954 | { |
955 | remote_fileio_ioerror (); | |
956 | return; | |
957 | } | |
86cc68a8 NS |
958 | |
959 | /* Request oldpath using 'm' packet */ | |
960 | oldpath = alloca (old_len); | |
f7605bc2 | 961 | if (target_read_memory (old_ptr, (gdb_byte *) oldpath, old_len) != 0) |
449092f6 CV |
962 | { |
963 | remote_fileio_ioerror (); | |
964 | return; | |
965 | } | |
86cc68a8 | 966 | |
449092f6 | 967 | /* Request newpath using 'm' packet */ |
86cc68a8 | 968 | newpath = alloca (new_len); |
f7605bc2 | 969 | if (target_read_memory (new_ptr, (gdb_byte *) newpath, new_len) != 0) |
449092f6 CV |
970 | { |
971 | remote_fileio_ioerror (); | |
972 | return; | |
973 | } | |
974 | ||
0df8b418 | 975 | /* Only operate on regular files and directories. */ |
cbcdb1f5 CV |
976 | of = stat (oldpath, &ost); |
977 | nf = stat (newpath, &nst); | |
978 | if ((!of && !S_ISREG (ost.st_mode) && !S_ISDIR (ost.st_mode)) | |
979 | || (!nf && !S_ISREG (nst.st_mode) && !S_ISDIR (nst.st_mode))) | |
449092f6 CV |
980 | { |
981 | remote_fileio_reply (-1, FILEIO_EACCES); | |
982 | return; | |
983 | } | |
984 | ||
985 | remote_fio_no_longjmp = 1; | |
986 | ret = rename (oldpath, newpath); | |
987 | ||
988 | if (ret == -1) | |
989 | { | |
990 | /* Special case: newpath is a non-empty directory. Some systems | |
991 | return ENOTEMPTY, some return EEXIST. We coerce that to be | |
0df8b418 | 992 | always EEXIST. */ |
449092f6 CV |
993 | if (errno == ENOTEMPTY) |
994 | errno = EEXIST; | |
995 | #ifdef __CYGWIN__ | |
0df8b418 | 996 | /* Workaround some Cygwin problems with correct errnos. */ |
449092f6 CV |
997 | if (errno == EACCES) |
998 | { | |
999 | if (!of && !nf && S_ISDIR (nst.st_mode)) | |
1000 | { | |
1001 | if (S_ISREG (ost.st_mode)) | |
1002 | errno = EISDIR; | |
1003 | else | |
1004 | { | |
d0d0ab16 CV |
1005 | char oldfullpath[PATH_MAX]; |
1006 | char newfullpath[PATH_MAX]; | |
449092f6 CV |
1007 | int len; |
1008 | ||
d0d0ab16 CV |
1009 | cygwin_conv_path (CCP_WIN_A_TO_POSIX, oldpath, oldfullpath, |
1010 | PATH_MAX); | |
1011 | cygwin_conv_path (CCP_WIN_A_TO_POSIX, newpath, newfullpath, | |
1012 | PATH_MAX); | |
449092f6 | 1013 | len = strlen (oldfullpath); |
0ba1096a KT |
1014 | if (IS_DIR_SEPARATOR (newfullpath[len]) |
1015 | && !filename_ncmp (oldfullpath, newfullpath, len)) | |
449092f6 CV |
1016 | errno = EINVAL; |
1017 | else | |
1018 | errno = EEXIST; | |
1019 | } | |
1020 | } | |
1021 | } | |
1022 | #endif | |
1023 | ||
1024 | remote_fileio_return_errno (-1); | |
1025 | } | |
1026 | else | |
1027 | remote_fileio_return_success (ret); | |
1028 | } | |
1029 | ||
1030 | static void | |
1031 | remote_fileio_func_unlink (char *buf) | |
1032 | { | |
1033 | CORE_ADDR ptrval; | |
f7605bc2 | 1034 | int length; |
449092f6 CV |
1035 | char *pathname; |
1036 | int ret; | |
1037 | struct stat st; | |
1038 | ||
1039 | /* Parameter: Ptr to pathname / length incl. trailing zero */ | |
1040 | if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length)) | |
1041 | { | |
1042 | remote_fileio_ioerror (); | |
1043 | return; | |
1044 | } | |
1045 | /* Request pathname using 'm' packet */ | |
1046 | pathname = alloca (length); | |
f7605bc2 | 1047 | if (target_read_memory (ptrval, (gdb_byte *) pathname, length) != 0) |
449092f6 CV |
1048 | { |
1049 | remote_fileio_ioerror (); | |
1050 | return; | |
1051 | } | |
1052 | ||
1053 | /* Only operate on regular files (and directories, which allows to return | |
0df8b418 | 1054 | the correct return code). */ |
449092f6 CV |
1055 | if (!stat (pathname, &st) && !S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode)) |
1056 | { | |
1057 | remote_fileio_reply (-1, FILEIO_ENODEV); | |
1058 | return; | |
1059 | } | |
1060 | ||
1061 | remote_fio_no_longjmp = 1; | |
1062 | ret = unlink (pathname); | |
1063 | ||
1064 | if (ret == -1) | |
1065 | remote_fileio_return_errno (-1); | |
1066 | else | |
1067 | remote_fileio_return_success (ret); | |
1068 | } | |
1069 | ||
1070 | static void | |
1071 | remote_fileio_func_stat (char *buf) | |
1072 | { | |
86cc68a8 | 1073 | CORE_ADDR statptr, nameptr; |
f7605bc2 | 1074 | int ret, namelength; |
449092f6 | 1075 | char *pathname; |
cbcdb1f5 | 1076 | LONGEST lnum; |
449092f6 CV |
1077 | struct stat st; |
1078 | struct fio_stat fst; | |
1079 | ||
1080 | /* 1. Parameter: Ptr to pathname / length incl. trailing zero */ | |
86cc68a8 | 1081 | if (remote_fileio_extract_ptr_w_len (&buf, &nameptr, &namelength)) |
449092f6 CV |
1082 | { |
1083 | remote_fileio_ioerror (); | |
1084 | return; | |
1085 | } | |
86cc68a8 NS |
1086 | |
1087 | /* 2. Parameter: Ptr to struct stat */ | |
1088 | if (remote_fileio_extract_long (&buf, &lnum)) | |
449092f6 CV |
1089 | { |
1090 | remote_fileio_ioerror (); | |
1091 | return; | |
1092 | } | |
86cc68a8 NS |
1093 | statptr = (CORE_ADDR) lnum; |
1094 | ||
1095 | /* Request pathname using 'm' packet */ | |
1096 | pathname = alloca (namelength); | |
f7605bc2 | 1097 | if (target_read_memory (nameptr, (gdb_byte *) pathname, namelength) != 0) |
449092f6 CV |
1098 | { |
1099 | remote_fileio_ioerror (); | |
1100 | return; | |
1101 | } | |
449092f6 CV |
1102 | |
1103 | remote_fio_no_longjmp = 1; | |
1104 | ret = stat (pathname, &st); | |
1105 | ||
1106 | if (ret == -1) | |
1107 | { | |
1108 | remote_fileio_return_errno (-1); | |
1109 | return; | |
1110 | } | |
0df8b418 | 1111 | /* Only operate on regular files and directories. */ |
449092f6 CV |
1112 | if (!ret && !S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode)) |
1113 | { | |
1114 | remote_fileio_reply (-1, FILEIO_EACCES); | |
1115 | return; | |
1116 | } | |
86cc68a8 | 1117 | if (statptr) |
449092f6 CV |
1118 | { |
1119 | remote_fileio_to_fio_stat (&st, &fst); | |
1120 | remote_fileio_to_fio_uint (0, fst.fst_dev); | |
f7605bc2 PA |
1121 | |
1122 | errno = target_write_memory (statptr, (gdb_byte *) &fst, sizeof fst); | |
1123 | if (errno != 0) | |
449092f6 CV |
1124 | { |
1125 | remote_fileio_return_errno (-1); | |
1126 | return; | |
1127 | } | |
1128 | } | |
1129 | remote_fileio_return_success (ret); | |
1130 | } | |
1131 | ||
1132 | static void | |
1133 | remote_fileio_func_fstat (char *buf) | |
1134 | { | |
1135 | CORE_ADDR ptrval; | |
22e048c9 | 1136 | int fd, ret; |
449092f6 | 1137 | long target_fd; |
cbcdb1f5 | 1138 | LONGEST lnum; |
449092f6 CV |
1139 | struct stat st; |
1140 | struct fio_stat fst; | |
1141 | struct timeval tv; | |
1142 | ||
1143 | /* 1. Parameter: file descriptor */ | |
1144 | if (remote_fileio_extract_int (&buf, &target_fd)) | |
1145 | { | |
1146 | remote_fileio_ioerror (); | |
1147 | return; | |
1148 | } | |
cbcdb1f5 CV |
1149 | fd = remote_fileio_map_fd ((int) target_fd); |
1150 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
1151 | { |
1152 | remote_fileio_badfd (); | |
1153 | return; | |
1154 | } | |
1155 | /* 2. Parameter: Ptr to struct stat */ | |
1156 | if (remote_fileio_extract_long (&buf, &lnum)) | |
1157 | { | |
1158 | remote_fileio_ioerror (); | |
1159 | return; | |
1160 | } | |
1161 | ptrval = (CORE_ADDR) lnum; | |
1162 | ||
1163 | remote_fio_no_longjmp = 1; | |
1164 | if (fd == FIO_FD_CONSOLE_IN || fd == FIO_FD_CONSOLE_OUT) | |
1165 | { | |
1166 | remote_fileio_to_fio_uint (1, fst.fst_dev); | |
2e3fd767 | 1167 | memset (&st, 0, sizeof (st)); |
449092f6 CV |
1168 | st.st_mode = S_IFCHR | (fd == FIO_FD_CONSOLE_IN ? S_IRUSR : S_IWUSR); |
1169 | st.st_nlink = 1; | |
d3ea6809 | 1170 | #ifdef HAVE_GETUID |
449092f6 | 1171 | st.st_uid = getuid (); |
d3ea6809 MM |
1172 | #endif |
1173 | #ifdef HAVE_GETGID | |
449092f6 | 1174 | st.st_gid = getgid (); |
d3ea6809 | 1175 | #endif |
d3ea6809 | 1176 | #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE |
449092f6 | 1177 | st.st_blksize = 512; |
d3ea6809 | 1178 | #endif |
1dd727e9 | 1179 | #if HAVE_STRUCT_STAT_ST_BLOCKS |
449092f6 | 1180 | st.st_blocks = 0; |
1dd727e9 | 1181 | #endif |
449092f6 CV |
1182 | if (!gettimeofday (&tv, NULL)) |
1183 | st.st_atime = st.st_mtime = st.st_ctime = tv.tv_sec; | |
1184 | else | |
1185 | st.st_atime = st.st_mtime = st.st_ctime = (time_t) 0; | |
1186 | ret = 0; | |
1187 | } | |
1188 | else | |
1189 | ret = fstat (fd, &st); | |
1190 | ||
1191 | if (ret == -1) | |
1192 | { | |
1193 | remote_fileio_return_errno (-1); | |
1194 | return; | |
1195 | } | |
1196 | if (ptrval) | |
1197 | { | |
1198 | remote_fileio_to_fio_stat (&st, &fst); | |
1199 | ||
f7605bc2 PA |
1200 | errno = target_write_memory (ptrval, (gdb_byte *) &fst, sizeof fst); |
1201 | if (errno != 0) | |
449092f6 CV |
1202 | { |
1203 | remote_fileio_return_errno (-1); | |
1204 | return; | |
1205 | } | |
1206 | } | |
1207 | remote_fileio_return_success (ret); | |
1208 | } | |
1209 | ||
1210 | static void | |
1211 | remote_fileio_func_gettimeofday (char *buf) | |
1212 | { | |
cbcdb1f5 | 1213 | LONGEST lnum; |
449092f6 | 1214 | CORE_ADDR ptrval; |
22e048c9 | 1215 | int ret; |
449092f6 CV |
1216 | struct timeval tv; |
1217 | struct fio_timeval ftv; | |
1218 | ||
1219 | /* 1. Parameter: struct timeval pointer */ | |
1220 | if (remote_fileio_extract_long (&buf, &lnum)) | |
1221 | { | |
1222 | remote_fileio_ioerror (); | |
1223 | return; | |
1224 | } | |
1225 | ptrval = (CORE_ADDR) lnum; | |
0df8b418 | 1226 | /* 2. Parameter: some pointer value... */ |
449092f6 CV |
1227 | if (remote_fileio_extract_long (&buf, &lnum)) |
1228 | { | |
1229 | remote_fileio_ioerror (); | |
1230 | return; | |
1231 | } | |
0df8b418 | 1232 | /* ...which has to be NULL. */ |
449092f6 CV |
1233 | if (lnum) |
1234 | { | |
1235 | remote_fileio_reply (-1, FILEIO_EINVAL); | |
1236 | return; | |
1237 | } | |
1238 | ||
1239 | remote_fio_no_longjmp = 1; | |
1240 | ret = gettimeofday (&tv, NULL); | |
1241 | ||
1242 | if (ret == -1) | |
1243 | { | |
1244 | remote_fileio_return_errno (-1); | |
1245 | return; | |
1246 | } | |
1247 | ||
1248 | if (ptrval) | |
1249 | { | |
1250 | remote_fileio_to_fio_timeval (&tv, &ftv); | |
1251 | ||
f7605bc2 PA |
1252 | errno = target_write_memory (ptrval, (gdb_byte *) &ftv, sizeof ftv); |
1253 | if (errno != 0) | |
449092f6 CV |
1254 | { |
1255 | remote_fileio_return_errno (-1); | |
1256 | return; | |
1257 | } | |
1258 | } | |
1259 | remote_fileio_return_success (ret); | |
1260 | } | |
1261 | ||
1262 | static void | |
1263 | remote_fileio_func_isatty (char *buf) | |
1264 | { | |
1265 | long target_fd; | |
1266 | int fd; | |
1267 | ||
1268 | /* Parameter: file descriptor */ | |
1269 | if (remote_fileio_extract_int (&buf, &target_fd)) | |
1270 | { | |
1271 | remote_fileio_ioerror (); | |
1272 | return; | |
1273 | } | |
1274 | remote_fio_no_longjmp = 1; | |
1275 | fd = remote_fileio_map_fd ((int) target_fd); | |
1276 | remote_fileio_return_success (fd == FIO_FD_CONSOLE_IN || | |
1277 | fd == FIO_FD_CONSOLE_OUT ? 1 : 0); | |
1278 | } | |
1279 | ||
1280 | static void | |
1281 | remote_fileio_func_system (char *buf) | |
1282 | { | |
1283 | CORE_ADDR ptrval; | |
22e048c9 | 1284 | int ret, length; |
5600ea19 | 1285 | char *cmdline = NULL; |
449092f6 CV |
1286 | |
1287 | /* Parameter: Ptr to commandline / length incl. trailing zero */ | |
1288 | if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length)) | |
1289 | { | |
1290 | remote_fileio_ioerror (); | |
1291 | return; | |
1292 | } | |
5600ea19 NS |
1293 | |
1294 | if (length) | |
449092f6 | 1295 | { |
5600ea19 NS |
1296 | /* Request commandline using 'm' packet */ |
1297 | cmdline = alloca (length); | |
f7605bc2 | 1298 | if (target_read_memory (ptrval, (gdb_byte *) cmdline, length) != 0) |
5600ea19 NS |
1299 | { |
1300 | remote_fileio_ioerror (); | |
1301 | return; | |
1302 | } | |
1303 | } | |
1304 | ||
1305 | /* Check if system(3) has been explicitely allowed using the | |
1306 | `set remote system-call-allowed 1' command. If length is 0, | |
1307 | indicating a NULL parameter to the system call, return zero to | |
1308 | indicate a shell is not available. Otherwise fail with EPERM. */ | |
1309 | if (!remote_fio_system_call_allowed) | |
1310 | { | |
1311 | if (!length) | |
1312 | remote_fileio_return_success (0); | |
1313 | else | |
1314 | remote_fileio_reply (-1, FILEIO_EPERM); | |
449092f6 CV |
1315 | return; |
1316 | } | |
1317 | ||
1318 | remote_fio_no_longjmp = 1; | |
1319 | ret = system (cmdline); | |
1320 | ||
5600ea19 NS |
1321 | if (!length) |
1322 | remote_fileio_return_success (ret); | |
1323 | else if (ret == -1) | |
449092f6 CV |
1324 | remote_fileio_return_errno (-1); |
1325 | else | |
1326 | remote_fileio_return_success (WEXITSTATUS (ret)); | |
1327 | } | |
1328 | ||
1329 | static struct { | |
1330 | char *name; | |
1331 | void (*func)(char *); | |
1332 | } remote_fio_func_map[] = { | |
d5d6fca5 DJ |
1333 | { "open", remote_fileio_func_open }, |
1334 | { "close", remote_fileio_func_close }, | |
1335 | { "read", remote_fileio_func_read }, | |
1336 | { "write", remote_fileio_func_write }, | |
1337 | { "lseek", remote_fileio_func_lseek }, | |
1338 | { "rename", remote_fileio_func_rename }, | |
1339 | { "unlink", remote_fileio_func_unlink }, | |
1340 | { "stat", remote_fileio_func_stat }, | |
1341 | { "fstat", remote_fileio_func_fstat }, | |
1342 | { "gettimeofday", remote_fileio_func_gettimeofday }, | |
1343 | { "isatty", remote_fileio_func_isatty }, | |
1344 | { "system", remote_fileio_func_system }, | |
1345 | { NULL, NULL } | |
449092f6 CV |
1346 | }; |
1347 | ||
1348 | static int | |
1349 | do_remote_fileio_request (struct ui_out *uiout, void *buf_arg) | |
1350 | { | |
1351 | char *buf = buf_arg; | |
1352 | char *c; | |
1353 | int idx; | |
1354 | ||
1355 | remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler); | |
1356 | ||
1357 | c = strchr (++buf, ','); | |
1358 | if (c) | |
1359 | *c++ = '\0'; | |
1360 | else | |
1361 | c = strchr (buf, '\0'); | |
1362 | for (idx = 0; remote_fio_func_map[idx].name; ++idx) | |
1363 | if (!strcmp (remote_fio_func_map[idx].name, buf)) | |
1364 | break; | |
0df8b418 | 1365 | if (!remote_fio_func_map[idx].name) /* ERROR: No such function. */ |
449092f6 CV |
1366 | return RETURN_ERROR; |
1367 | remote_fio_func_map[idx].func (c); | |
1368 | return 0; | |
1369 | } | |
1370 | ||
ad9a8f3f NS |
1371 | /* Close any open descriptors, and reinitialize the file mapping. */ |
1372 | ||
1373 | void | |
1374 | remote_fileio_reset (void) | |
1375 | { | |
1376 | int ix; | |
1377 | ||
1378 | for (ix = 0; ix != remote_fio_data.fd_map_size; ix++) | |
1379 | { | |
1380 | int fd = remote_fio_data.fd_map[ix]; | |
1381 | ||
1382 | if (fd >= 0) | |
1383 | close (fd); | |
1384 | } | |
1385 | if (remote_fio_data.fd_map) | |
1386 | { | |
6c761d9c | 1387 | xfree (remote_fio_data.fd_map); |
ad9a8f3f NS |
1388 | remote_fio_data.fd_map = NULL; |
1389 | remote_fio_data.fd_map_size = 0; | |
1390 | } | |
1391 | } | |
1392 | ||
0df8b418 MS |
1393 | /* Handle a file I/O request. BUF points to the packet containing the |
1394 | request. CTRLC_PENDING_P should be nonzero if the target has not | |
3a29589a DJ |
1395 | acknowledged the Ctrl-C sent asynchronously earlier. */ |
1396 | ||
449092f6 | 1397 | void |
3a29589a | 1398 | remote_fileio_request (char *buf, int ctrlc_pending_p) |
449092f6 CV |
1399 | { |
1400 | int ex; | |
1401 | ||
1402 | remote_fileio_sig_init (); | |
1403 | ||
3a29589a | 1404 | if (ctrlc_pending_p) |
449092f6 | 1405 | { |
3a29589a DJ |
1406 | /* If the target hasn't responded to the Ctrl-C sent |
1407 | asynchronously earlier, take this opportunity to send the | |
1408 | Ctrl-C synchronously. */ | |
1409 | remote_fio_ctrl_c_flag = 1; | |
1410 | remote_fio_no_longjmp = 0; | |
1411 | remote_fileio_reply (-1, FILEIO_EINTR); | |
1412 | } | |
1413 | else | |
1414 | { | |
1415 | remote_fio_ctrl_c_flag = 0; | |
1416 | remote_fio_no_longjmp = 0; | |
1417 | ||
79a45e25 PA |
1418 | ex = catch_exceptions (current_uiout, |
1419 | do_remote_fileio_request, (void *)buf, | |
3a29589a DJ |
1420 | RETURN_MASK_ALL); |
1421 | switch (ex) | |
1422 | { | |
1423 | case RETURN_ERROR: | |
1424 | remote_fileio_reply (-1, FILEIO_ENOSYS); | |
1425 | break; | |
1426 | case RETURN_QUIT: | |
1427 | remote_fileio_reply (-1, FILEIO_EINTR); | |
1428 | break; | |
1429 | default: | |
1430 | break; | |
1431 | } | |
449092f6 CV |
1432 | } |
1433 | ||
1434 | remote_fileio_sig_exit (); | |
1435 | } | |
1436 | ||
1437 | static void | |
1438 | set_system_call_allowed (char *args, int from_tty) | |
1439 | { | |
1440 | if (args) | |
1441 | { | |
1442 | char *arg_end; | |
1443 | int val = strtoul (args, &arg_end, 10); | |
123f5f96 | 1444 | |
449092f6 CV |
1445 | if (*args && *arg_end == '\0') |
1446 | { | |
1447 | remote_fio_system_call_allowed = !!val; | |
1448 | return; | |
1449 | } | |
1450 | } | |
8a3fe4f8 | 1451 | error (_("Illegal argument for \"set remote system-call-allowed\" command")); |
449092f6 CV |
1452 | } |
1453 | ||
1454 | static void | |
1455 | show_system_call_allowed (char *args, int from_tty) | |
1456 | { | |
1457 | if (args) | |
3e43a32a MS |
1458 | error (_("Garbage after \"show remote " |
1459 | "system-call-allowed\" command: `%s'"), args); | |
449092f6 CV |
1460 | printf_unfiltered ("Calling host system(3) call from target is %sallowed\n", |
1461 | remote_fio_system_call_allowed ? "" : "not "); | |
1462 | } | |
1463 | ||
1464 | void | |
1465 | initialize_remote_fileio (struct cmd_list_element *remote_set_cmdlist, | |
1466 | struct cmd_list_element *remote_show_cmdlist) | |
1467 | { | |
b803fb0f DJ |
1468 | sigint_fileio_token = |
1469 | create_async_signal_handler (async_remote_fileio_interrupt, NULL); | |
1470 | ||
449092f6 CV |
1471 | add_cmd ("system-call-allowed", no_class, |
1472 | set_system_call_allowed, | |
1a966eab | 1473 | _("Set if the host system(3) call is allowed for the target."), |
449092f6 CV |
1474 | &remote_set_cmdlist); |
1475 | add_cmd ("system-call-allowed", no_class, | |
1476 | show_system_call_allowed, | |
1a966eab | 1477 | _("Show if the host system(3) call is allowed for the target."), |
449092f6 CV |
1478 | &remote_show_cmdlist); |
1479 | } |