Commit | Line | Data |
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449092f6 CV |
1 | /* Remote File-I/O communications |
2 | ||
32d0add0 | 3 | Copyright (C) 2003-2015 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" | |
449092f6 CV |
23 | #include "gdbcmd.h" |
24 | #include "remote.h" | |
25 | #include "gdb/fileio.h" | |
0ef75e11 | 26 | #include "gdb_wait.h" |
53ce3c39 | 27 | #include <sys/stat.h> |
cd90e54f | 28 | #include "remote-fileio.h" |
b803fb0f | 29 | #include "event-loop.h" |
f7605bc2 | 30 | #include "target.h" |
0ba1096a | 31 | #include "filenames.h" |
614c279d | 32 | #include "filestuff.h" |
449092f6 | 33 | |
449092f6 CV |
34 | #include <fcntl.h> |
35 | #include <sys/time.h> | |
449092f6 | 36 | #ifdef __CYGWIN__ |
c6ca3dab | 37 | #include <sys/cygwin.h> /* For cygwin_conv_path. */ |
449092f6 | 38 | #endif |
449092f6 CV |
39 | #include <signal.h> |
40 | ||
41 | static struct { | |
42 | int *fd_map; | |
43 | int fd_map_size; | |
44 | } remote_fio_data; | |
45 | ||
46 | #define FIO_FD_INVALID -1 | |
47 | #define FIO_FD_CONSOLE_IN -2 | |
48 | #define FIO_FD_CONSOLE_OUT -3 | |
49 | ||
50 | static int remote_fio_system_call_allowed = 0; | |
51 | ||
b803fb0f DJ |
52 | static struct async_signal_handler *sigint_fileio_token; |
53 | ||
449092f6 | 54 | static int |
cbcdb1f5 | 55 | remote_fileio_init_fd_map (void) |
449092f6 CV |
56 | { |
57 | int i; | |
58 | ||
59 | if (!remote_fio_data.fd_map) | |
60 | { | |
61 | remote_fio_data.fd_map = (int *) xmalloc (10 * sizeof (int)); | |
62 | remote_fio_data.fd_map_size = 10; | |
63 | remote_fio_data.fd_map[0] = FIO_FD_CONSOLE_IN; | |
64 | remote_fio_data.fd_map[1] = FIO_FD_CONSOLE_OUT; | |
65 | remote_fio_data.fd_map[2] = FIO_FD_CONSOLE_OUT; | |
66 | for (i = 3; i < 10; ++i) | |
67 | remote_fio_data.fd_map[i] = FIO_FD_INVALID; | |
68 | } | |
69 | return 3; | |
70 | } | |
71 | ||
72 | static int | |
cbcdb1f5 | 73 | remote_fileio_resize_fd_map (void) |
449092f6 | 74 | { |
9f8e6999 MG |
75 | int i = remote_fio_data.fd_map_size; |
76 | ||
449092f6 CV |
77 | if (!remote_fio_data.fd_map) |
78 | return remote_fileio_init_fd_map (); | |
79 | remote_fio_data.fd_map_size += 10; | |
80 | remote_fio_data.fd_map = | |
81 | (int *) xrealloc (remote_fio_data.fd_map, | |
82 | remote_fio_data.fd_map_size * sizeof (int)); | |
9f8e6999 MG |
83 | for (; i < remote_fio_data.fd_map_size; i++) |
84 | remote_fio_data.fd_map[i] = FIO_FD_INVALID; | |
449092f6 CV |
85 | return remote_fio_data.fd_map_size - 10; |
86 | } | |
87 | ||
88 | static int | |
cbcdb1f5 | 89 | remote_fileio_next_free_fd (void) |
449092f6 CV |
90 | { |
91 | int i; | |
92 | ||
93 | for (i = 0; i < remote_fio_data.fd_map_size; ++i) | |
94 | if (remote_fio_data.fd_map[i] == FIO_FD_INVALID) | |
95 | return i; | |
96 | return remote_fileio_resize_fd_map (); | |
97 | } | |
98 | ||
99 | static int | |
100 | remote_fileio_fd_to_targetfd (int fd) | |
101 | { | |
102 | int target_fd = remote_fileio_next_free_fd (); | |
123f5f96 | 103 | |
449092f6 CV |
104 | remote_fio_data.fd_map[target_fd] = fd; |
105 | return target_fd; | |
106 | } | |
107 | ||
108 | static int | |
109 | remote_fileio_map_fd (int target_fd) | |
110 | { | |
111 | remote_fileio_init_fd_map (); | |
112 | if (target_fd < 0 || target_fd >= remote_fio_data.fd_map_size) | |
113 | return FIO_FD_INVALID; | |
114 | return remote_fio_data.fd_map[target_fd]; | |
115 | } | |
116 | ||
117 | static void | |
118 | remote_fileio_close_target_fd (int target_fd) | |
119 | { | |
120 | remote_fileio_init_fd_map (); | |
121 | if (target_fd >= 0 && target_fd < remote_fio_data.fd_map_size) | |
122 | remote_fio_data.fd_map[target_fd] = FIO_FD_INVALID; | |
123 | } | |
124 | ||
125 | static int | |
126 | remote_fileio_oflags_to_host (long flags) | |
127 | { | |
128 | int hflags = 0; | |
129 | ||
130 | if (flags & FILEIO_O_CREAT) | |
131 | hflags |= O_CREAT; | |
132 | if (flags & FILEIO_O_EXCL) | |
133 | hflags |= O_EXCL; | |
134 | if (flags & FILEIO_O_TRUNC) | |
135 | hflags |= O_TRUNC; | |
136 | if (flags & FILEIO_O_APPEND) | |
137 | hflags |= O_APPEND; | |
138 | if (flags & FILEIO_O_RDONLY) | |
139 | hflags |= O_RDONLY; | |
140 | if (flags & FILEIO_O_WRONLY) | |
141 | hflags |= O_WRONLY; | |
142 | if (flags & FILEIO_O_RDWR) | |
143 | hflags |= O_RDWR; | |
144 | /* On systems supporting binary and text mode, always open files in | |
0df8b418 | 145 | binary mode. */ |
449092f6 CV |
146 | #ifdef O_BINARY |
147 | hflags |= O_BINARY; | |
148 | #endif | |
149 | return hflags; | |
150 | } | |
151 | ||
152 | static mode_t | |
153 | remote_fileio_mode_to_host (long mode, int open_call) | |
154 | { | |
155 | mode_t hmode = 0; | |
156 | ||
157 | if (!open_call) | |
158 | { | |
159 | if (mode & FILEIO_S_IFREG) | |
160 | hmode |= S_IFREG; | |
161 | if (mode & FILEIO_S_IFDIR) | |
162 | hmode |= S_IFDIR; | |
163 | if (mode & FILEIO_S_IFCHR) | |
164 | hmode |= S_IFCHR; | |
165 | } | |
166 | if (mode & FILEIO_S_IRUSR) | |
167 | hmode |= S_IRUSR; | |
168 | if (mode & FILEIO_S_IWUSR) | |
169 | hmode |= S_IWUSR; | |
170 | if (mode & FILEIO_S_IXUSR) | |
171 | hmode |= S_IXUSR; | |
9b265ec2 | 172 | #ifdef S_IRGRP |
449092f6 CV |
173 | if (mode & FILEIO_S_IRGRP) |
174 | hmode |= S_IRGRP; | |
9b265ec2 MM |
175 | #endif |
176 | #ifdef S_IWGRP | |
449092f6 CV |
177 | if (mode & FILEIO_S_IWGRP) |
178 | hmode |= S_IWGRP; | |
9b265ec2 MM |
179 | #endif |
180 | #ifdef S_IXGRP | |
449092f6 CV |
181 | if (mode & FILEIO_S_IXGRP) |
182 | hmode |= S_IXGRP; | |
9b265ec2 | 183 | #endif |
449092f6 CV |
184 | if (mode & FILEIO_S_IROTH) |
185 | hmode |= S_IROTH; | |
9b265ec2 | 186 | #ifdef S_IWOTH |
449092f6 CV |
187 | if (mode & FILEIO_S_IWOTH) |
188 | hmode |= S_IWOTH; | |
9b265ec2 MM |
189 | #endif |
190 | #ifdef S_IXOTH | |
449092f6 CV |
191 | if (mode & FILEIO_S_IXOTH) |
192 | hmode |= S_IXOTH; | |
9b265ec2 | 193 | #endif |
449092f6 CV |
194 | return hmode; |
195 | } | |
196 | ||
cbcdb1f5 | 197 | static LONGEST |
449092f6 CV |
198 | remote_fileio_mode_to_target (mode_t mode) |
199 | { | |
200 | mode_t tmode = 0; | |
201 | ||
9c7deb13 | 202 | if (S_ISREG(mode)) |
449092f6 | 203 | tmode |= FILEIO_S_IFREG; |
9c7deb13 | 204 | if (S_ISDIR(mode)) |
449092f6 | 205 | tmode |= FILEIO_S_IFDIR; |
9c7deb13 | 206 | if (S_ISCHR(mode)) |
449092f6 CV |
207 | tmode |= FILEIO_S_IFCHR; |
208 | if (mode & S_IRUSR) | |
209 | tmode |= FILEIO_S_IRUSR; | |
210 | if (mode & S_IWUSR) | |
211 | tmode |= FILEIO_S_IWUSR; | |
212 | if (mode & S_IXUSR) | |
213 | tmode |= FILEIO_S_IXUSR; | |
9b265ec2 | 214 | #ifdef S_IRGRP |
449092f6 CV |
215 | if (mode & S_IRGRP) |
216 | tmode |= FILEIO_S_IRGRP; | |
9b265ec2 MM |
217 | #endif |
218 | #ifdef S_IWRGRP | |
449092f6 CV |
219 | if (mode & S_IWGRP) |
220 | tmode |= FILEIO_S_IWGRP; | |
9b265ec2 MM |
221 | #endif |
222 | #ifdef S_IXGRP | |
449092f6 CV |
223 | if (mode & S_IXGRP) |
224 | tmode |= FILEIO_S_IXGRP; | |
9b265ec2 | 225 | #endif |
449092f6 CV |
226 | if (mode & S_IROTH) |
227 | tmode |= FILEIO_S_IROTH; | |
9b265ec2 | 228 | #ifdef S_IWOTH |
449092f6 CV |
229 | if (mode & S_IWOTH) |
230 | tmode |= FILEIO_S_IWOTH; | |
9b265ec2 MM |
231 | #endif |
232 | #ifdef S_IXOTH | |
449092f6 CV |
233 | if (mode & S_IXOTH) |
234 | tmode |= FILEIO_S_IXOTH; | |
9b265ec2 | 235 | #endif |
449092f6 CV |
236 | return tmode; |
237 | } | |
238 | ||
239 | static int | |
240 | remote_fileio_errno_to_target (int error) | |
241 | { | |
242 | switch (error) | |
243 | { | |
244 | case EPERM: | |
245 | return FILEIO_EPERM; | |
246 | case ENOENT: | |
247 | return FILEIO_ENOENT; | |
248 | case EINTR: | |
249 | return FILEIO_EINTR; | |
250 | case EIO: | |
251 | return FILEIO_EIO; | |
252 | case EBADF: | |
253 | return FILEIO_EBADF; | |
254 | case EACCES: | |
255 | return FILEIO_EACCES; | |
256 | case EFAULT: | |
257 | return FILEIO_EFAULT; | |
258 | case EBUSY: | |
259 | return FILEIO_EBUSY; | |
260 | case EEXIST: | |
261 | return FILEIO_EEXIST; | |
262 | case ENODEV: | |
263 | return FILEIO_ENODEV; | |
264 | case ENOTDIR: | |
265 | return FILEIO_ENOTDIR; | |
266 | case EISDIR: | |
267 | return FILEIO_EISDIR; | |
268 | case EINVAL: | |
269 | return FILEIO_EINVAL; | |
270 | case ENFILE: | |
271 | return FILEIO_ENFILE; | |
272 | case EMFILE: | |
273 | return FILEIO_EMFILE; | |
274 | case EFBIG: | |
275 | return FILEIO_EFBIG; | |
276 | case ENOSPC: | |
277 | return FILEIO_ENOSPC; | |
278 | case ESPIPE: | |
279 | return FILEIO_ESPIPE; | |
280 | case EROFS: | |
281 | return FILEIO_EROFS; | |
282 | case ENOSYS: | |
283 | return FILEIO_ENOSYS; | |
284 | case ENAMETOOLONG: | |
285 | return FILEIO_ENAMETOOLONG; | |
286 | } | |
287 | return FILEIO_EUNKNOWN; | |
288 | } | |
289 | ||
290 | static int | |
291 | remote_fileio_seek_flag_to_host (long num, int *flag) | |
292 | { | |
293 | if (!flag) | |
294 | return 0; | |
295 | switch (num) | |
296 | { | |
297 | case FILEIO_SEEK_SET: | |
298 | *flag = SEEK_SET; | |
299 | break; | |
300 | case FILEIO_SEEK_CUR: | |
301 | *flag = SEEK_CUR; | |
302 | break; | |
303 | case FILEIO_SEEK_END: | |
304 | *flag = SEEK_END; | |
305 | break; | |
306 | default: | |
307 | return -1; | |
308 | } | |
309 | return 0; | |
310 | } | |
311 | ||
312 | static int | |
cbcdb1f5 | 313 | remote_fileio_extract_long (char **buf, LONGEST *retlong) |
449092f6 CV |
314 | { |
315 | char *c; | |
316 | int sign = 1; | |
317 | ||
318 | if (!buf || !*buf || !**buf || !retlong) | |
319 | return -1; | |
320 | c = strchr (*buf, ','); | |
321 | if (c) | |
322 | *c++ = '\0'; | |
323 | else | |
324 | c = strchr (*buf, '\0'); | |
325 | while (strchr ("+-", **buf)) | |
326 | { | |
327 | if (**buf == '-') | |
328 | sign = -sign; | |
329 | ++*buf; | |
330 | } | |
331 | for (*retlong = 0; **buf; ++*buf) | |
332 | { | |
333 | *retlong <<= 4; | |
334 | if (**buf >= '0' && **buf <= '9') | |
335 | *retlong += **buf - '0'; | |
336 | else if (**buf >= 'a' && **buf <= 'f') | |
337 | *retlong += **buf - 'a' + 10; | |
338 | else if (**buf >= 'A' && **buf <= 'F') | |
339 | *retlong += **buf - 'A' + 10; | |
340 | else | |
341 | return -1; | |
342 | } | |
343 | *retlong *= sign; | |
344 | *buf = c; | |
345 | return 0; | |
346 | } | |
347 | ||
348 | static int | |
349 | remote_fileio_extract_int (char **buf, long *retint) | |
350 | { | |
351 | int ret; | |
cbcdb1f5 | 352 | LONGEST retlong; |
449092f6 CV |
353 | |
354 | if (!retint) | |
355 | return -1; | |
cbcdb1f5 CV |
356 | ret = remote_fileio_extract_long (buf, &retlong); |
357 | if (!ret) | |
449092f6 CV |
358 | *retint = (long) retlong; |
359 | return ret; | |
360 | } | |
361 | ||
362 | static int | |
363 | remote_fileio_extract_ptr_w_len (char **buf, CORE_ADDR *ptrval, int *length) | |
364 | { | |
365 | char *c; | |
cbcdb1f5 | 366 | LONGEST retlong; |
449092f6 CV |
367 | |
368 | if (!buf || !*buf || !**buf || !ptrval || !length) | |
369 | return -1; | |
370 | c = strchr (*buf, '/'); | |
371 | if (!c) | |
372 | return -1; | |
373 | *c++ = '\0'; | |
374 | if (remote_fileio_extract_long (buf, &retlong)) | |
375 | return -1; | |
376 | *ptrval = (CORE_ADDR) retlong; | |
377 | *buf = c; | |
378 | if (remote_fileio_extract_long (buf, &retlong)) | |
379 | return -1; | |
380 | *length = (int) retlong; | |
381 | return 0; | |
382 | } | |
383 | ||
0df8b418 | 384 | /* Convert to big endian. */ |
449092f6 | 385 | static void |
cbcdb1f5 | 386 | remote_fileio_to_be (LONGEST num, char *buf, int bytes) |
449092f6 CV |
387 | { |
388 | int i; | |
389 | ||
390 | for (i = 0; i < bytes; ++i) | |
391 | buf[i] = (num >> (8 * (bytes - i - 1))) & 0xff; | |
392 | } | |
393 | ||
449092f6 CV |
394 | static void |
395 | remote_fileio_to_fio_uint (long num, fio_uint_t fnum) | |
396 | { | |
cbcdb1f5 | 397 | remote_fileio_to_be ((LONGEST) num, (char *) fnum, 4); |
449092f6 CV |
398 | } |
399 | ||
400 | static void | |
401 | remote_fileio_to_fio_mode (mode_t num, fio_mode_t fnum) | |
402 | { | |
403 | remote_fileio_to_be (remote_fileio_mode_to_target(num), (char *) fnum, 4); | |
404 | } | |
405 | ||
406 | static void | |
407 | remote_fileio_to_fio_time (time_t num, fio_time_t fnum) | |
408 | { | |
cbcdb1f5 | 409 | remote_fileio_to_be ((LONGEST) num, (char *) fnum, 4); |
449092f6 CV |
410 | } |
411 | ||
412 | static void | |
cbcdb1f5 | 413 | remote_fileio_to_fio_long (LONGEST num, fio_long_t fnum) |
449092f6 CV |
414 | { |
415 | remote_fileio_to_be (num, (char *) fnum, 8); | |
416 | } | |
417 | ||
418 | static void | |
cbcdb1f5 | 419 | remote_fileio_to_fio_ulong (LONGEST num, fio_ulong_t fnum) |
449092f6 CV |
420 | { |
421 | remote_fileio_to_be (num, (char *) fnum, 8); | |
422 | } | |
423 | ||
424 | static void | |
425 | remote_fileio_to_fio_stat (struct stat *st, struct fio_stat *fst) | |
426 | { | |
d3ea6809 MM |
427 | LONGEST blksize; |
428 | ||
0df8b418 | 429 | /* `st_dev' is set in the calling function. */ |
449092f6 CV |
430 | remote_fileio_to_fio_uint ((long) st->st_ino, fst->fst_ino); |
431 | remote_fileio_to_fio_mode (st->st_mode, fst->fst_mode); | |
432 | remote_fileio_to_fio_uint ((long) st->st_nlink, fst->fst_nlink); | |
433 | remote_fileio_to_fio_uint ((long) st->st_uid, fst->fst_uid); | |
434 | remote_fileio_to_fio_uint ((long) st->st_gid, fst->fst_gid); | |
435 | remote_fileio_to_fio_uint ((long) st->st_rdev, fst->fst_rdev); | |
cbcdb1f5 | 436 | remote_fileio_to_fio_ulong ((LONGEST) st->st_size, fst->fst_size); |
d3ea6809 MM |
437 | #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE |
438 | blksize = st->st_blksize; | |
439 | #else | |
440 | blksize = 512; | |
441 | #endif | |
442 | remote_fileio_to_fio_ulong (blksize, fst->fst_blksize); | |
1dd727e9 | 443 | #if HAVE_STRUCT_STAT_ST_BLOCKS |
cbcdb1f5 | 444 | remote_fileio_to_fio_ulong ((LONGEST) st->st_blocks, fst->fst_blocks); |
1dd727e9 EZ |
445 | #else |
446 | /* FIXME: This is correct for DJGPP, but other systems that don't | |
447 | have st_blocks, if any, might prefer 512 instead of st_blksize. | |
448 | (eliz, 30-12-2003) */ | |
d3ea6809 MM |
449 | remote_fileio_to_fio_ulong (((LONGEST) st->st_size + blksize - 1) |
450 | / blksize, | |
1dd727e9 EZ |
451 | fst->fst_blocks); |
452 | #endif | |
449092f6 CV |
453 | remote_fileio_to_fio_time (st->st_atime, fst->fst_atime); |
454 | remote_fileio_to_fio_time (st->st_mtime, fst->fst_mtime); | |
455 | remote_fileio_to_fio_time (st->st_ctime, fst->fst_ctime); | |
456 | } | |
457 | ||
458 | static void | |
459 | remote_fileio_to_fio_timeval (struct timeval *tv, struct fio_timeval *ftv) | |
460 | { | |
461 | remote_fileio_to_fio_time (tv->tv_sec, ftv->ftv_sec); | |
462 | remote_fileio_to_fio_long (tv->tv_usec, ftv->ftv_usec); | |
463 | } | |
464 | ||
465 | static int remote_fio_ctrl_c_flag = 0; | |
466 | static int remote_fio_no_longjmp = 0; | |
449092f6 CV |
467 | |
468 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
469 | static struct sigaction remote_fio_sa; | |
470 | static struct sigaction remote_fio_osa; | |
471 | #else | |
472 | static void (*remote_fio_ofunc)(int); | |
473 | #endif | |
474 | ||
475 | static void | |
cbcdb1f5 | 476 | remote_fileio_sig_init (void) |
449092f6 CV |
477 | { |
478 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
479 | remote_fio_sa.sa_handler = SIG_IGN; | |
480 | sigemptyset (&remote_fio_sa.sa_mask); | |
481 | remote_fio_sa.sa_flags = 0; | |
482 | sigaction (SIGINT, &remote_fio_sa, &remote_fio_osa); | |
483 | #else | |
484 | remote_fio_ofunc = signal (SIGINT, SIG_IGN); | |
485 | #endif | |
486 | } | |
487 | ||
488 | static void | |
489 | remote_fileio_sig_set (void (*sigint_func)(int)) | |
490 | { | |
491 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
492 | remote_fio_sa.sa_handler = sigint_func; | |
493 | sigemptyset (&remote_fio_sa.sa_mask); | |
494 | remote_fio_sa.sa_flags = 0; | |
495 | sigaction (SIGINT, &remote_fio_sa, NULL); | |
496 | #else | |
497 | signal (SIGINT, sigint_func); | |
498 | #endif | |
499 | } | |
500 | ||
501 | static void | |
cbcdb1f5 | 502 | remote_fileio_sig_exit (void) |
449092f6 CV |
503 | { |
504 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
505 | sigaction (SIGINT, &remote_fio_osa, NULL); | |
506 | #else | |
507 | signal (SIGINT, remote_fio_ofunc); | |
508 | #endif | |
509 | } | |
510 | ||
b803fb0f DJ |
511 | static void |
512 | async_remote_fileio_interrupt (gdb_client_data arg) | |
513 | { | |
039e3c22 | 514 | quit (); |
b803fb0f DJ |
515 | } |
516 | ||
449092f6 CV |
517 | static void |
518 | remote_fileio_ctrl_c_signal_handler (int signo) | |
519 | { | |
520 | remote_fileio_sig_set (SIG_IGN); | |
521 | remote_fio_ctrl_c_flag = 1; | |
522 | if (!remote_fio_no_longjmp) | |
b803fb0f | 523 | gdb_call_async_signal_handler (sigint_fileio_token, 1); |
449092f6 CV |
524 | remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler); |
525 | } | |
526 | ||
527 | static void | |
528 | remote_fileio_reply (int retcode, int error) | |
529 | { | |
530 | char buf[32]; | |
531 | ||
532 | remote_fileio_sig_set (SIG_IGN); | |
533 | strcpy (buf, "F"); | |
534 | if (retcode < 0) | |
535 | { | |
536 | strcat (buf, "-"); | |
537 | retcode = -retcode; | |
538 | } | |
539 | sprintf (buf + strlen (buf), "%x", retcode); | |
540 | if (error || remote_fio_ctrl_c_flag) | |
541 | { | |
542 | if (error && remote_fio_ctrl_c_flag) | |
543 | error = FILEIO_EINTR; | |
544 | if (error < 0) | |
545 | { | |
546 | strcat (buf, "-"); | |
547 | error = -error; | |
548 | } | |
549 | sprintf (buf + strlen (buf), ",%x", error); | |
550 | if (remote_fio_ctrl_c_flag) | |
551 | strcat (buf, ",C"); | |
552 | } | |
553 | remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler); | |
554 | putpkt (buf); | |
555 | } | |
556 | ||
557 | static void | |
cbcdb1f5 | 558 | remote_fileio_ioerror (void) |
449092f6 CV |
559 | { |
560 | remote_fileio_reply (-1, FILEIO_EIO); | |
561 | } | |
562 | ||
563 | static void | |
cbcdb1f5 | 564 | remote_fileio_badfd (void) |
449092f6 CV |
565 | { |
566 | remote_fileio_reply (-1, FILEIO_EBADF); | |
567 | } | |
568 | ||
569 | static void | |
570 | remote_fileio_return_errno (int retcode) | |
571 | { | |
3e43a32a MS |
572 | remote_fileio_reply (retcode, retcode < 0 |
573 | ? remote_fileio_errno_to_target (errno) : 0); | |
449092f6 CV |
574 | } |
575 | ||
576 | static void | |
577 | remote_fileio_return_success (int retcode) | |
578 | { | |
579 | remote_fileio_reply (retcode, 0); | |
580 | } | |
581 | ||
449092f6 CV |
582 | static void |
583 | remote_fileio_func_open (char *buf) | |
584 | { | |
585 | CORE_ADDR ptrval; | |
f7605bc2 | 586 | int length; |
449092f6 CV |
587 | long num; |
588 | int flags, fd; | |
589 | mode_t mode; | |
590 | char *pathname; | |
591 | struct stat st; | |
592 | ||
0df8b418 | 593 | /* 1. Parameter: Ptr to pathname / length incl. trailing zero. */ |
449092f6 CV |
594 | if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length)) |
595 | { | |
596 | remote_fileio_ioerror (); | |
597 | return; | |
598 | } | |
599 | /* 2. Parameter: open flags */ | |
600 | if (remote_fileio_extract_int (&buf, &num)) | |
601 | { | |
602 | remote_fileio_ioerror (); | |
603 | return; | |
604 | } | |
605 | flags = remote_fileio_oflags_to_host (num); | |
606 | /* 3. Parameter: open mode */ | |
607 | if (remote_fileio_extract_int (&buf, &num)) | |
608 | { | |
609 | remote_fileio_ioerror (); | |
610 | return; | |
611 | } | |
612 | mode = remote_fileio_mode_to_host (num, 1); | |
613 | ||
f7605bc2 | 614 | /* Request pathname. */ |
449092f6 | 615 | pathname = alloca (length); |
f7605bc2 | 616 | if (target_read_memory (ptrval, (gdb_byte *) pathname, length) != 0) |
449092f6 CV |
617 | { |
618 | remote_fileio_ioerror (); | |
619 | return; | |
620 | } | |
621 | ||
622 | /* Check if pathname exists and is not a regular file or directory. If so, | |
623 | return an appropriate error code. Same for trying to open directories | |
0df8b418 | 624 | for writing. */ |
449092f6 CV |
625 | if (!stat (pathname, &st)) |
626 | { | |
627 | if (!S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode)) | |
628 | { | |
629 | remote_fileio_reply (-1, FILEIO_ENODEV); | |
630 | return; | |
631 | } | |
632 | if (S_ISDIR (st.st_mode) | |
633 | && ((flags & O_WRONLY) == O_WRONLY || (flags & O_RDWR) == O_RDWR)) | |
634 | { | |
635 | remote_fileio_reply (-1, FILEIO_EISDIR); | |
636 | return; | |
637 | } | |
638 | } | |
639 | ||
640 | remote_fio_no_longjmp = 1; | |
614c279d | 641 | fd = gdb_open_cloexec (pathname, flags, mode); |
449092f6 CV |
642 | if (fd < 0) |
643 | { | |
644 | remote_fileio_return_errno (-1); | |
645 | return; | |
646 | } | |
647 | ||
648 | fd = remote_fileio_fd_to_targetfd (fd); | |
649 | remote_fileio_return_success (fd); | |
650 | } | |
651 | ||
652 | static void | |
653 | remote_fileio_func_close (char *buf) | |
654 | { | |
655 | long num; | |
656 | int fd; | |
657 | ||
658 | /* Parameter: file descriptor */ | |
659 | if (remote_fileio_extract_int (&buf, &num)) | |
660 | { | |
661 | remote_fileio_ioerror (); | |
662 | return; | |
663 | } | |
cbcdb1f5 CV |
664 | fd = remote_fileio_map_fd ((int) num); |
665 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
666 | { |
667 | remote_fileio_badfd (); | |
668 | return; | |
669 | } | |
670 | ||
671 | remote_fio_no_longjmp = 1; | |
672 | if (fd != FIO_FD_CONSOLE_IN && fd != FIO_FD_CONSOLE_OUT && close (fd)) | |
673 | remote_fileio_return_errno (-1); | |
674 | remote_fileio_close_target_fd ((int) num); | |
675 | remote_fileio_return_success (0); | |
676 | } | |
677 | ||
678 | static void | |
679 | remote_fileio_func_read (char *buf) | |
680 | { | |
681 | long target_fd, num; | |
cbcdb1f5 | 682 | LONGEST lnum; |
449092f6 | 683 | CORE_ADDR ptrval; |
22e048c9 | 684 | int fd, ret; |
cfd77fa1 | 685 | gdb_byte *buffer; |
449092f6 CV |
686 | size_t length; |
687 | off_t old_offset, new_offset; | |
688 | ||
689 | /* 1. Parameter: file descriptor */ | |
690 | if (remote_fileio_extract_int (&buf, &target_fd)) | |
691 | { | |
692 | remote_fileio_ioerror (); | |
693 | return; | |
694 | } | |
cbcdb1f5 CV |
695 | fd = remote_fileio_map_fd ((int) target_fd); |
696 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
697 | { |
698 | remote_fileio_badfd (); | |
699 | return; | |
700 | } | |
701 | /* 2. Parameter: buffer pointer */ | |
702 | if (remote_fileio_extract_long (&buf, &lnum)) | |
703 | { | |
704 | remote_fileio_ioerror (); | |
705 | return; | |
706 | } | |
707 | ptrval = (CORE_ADDR) lnum; | |
708 | /* 3. Parameter: buffer length */ | |
709 | if (remote_fileio_extract_int (&buf, &num)) | |
710 | { | |
711 | remote_fileio_ioerror (); | |
712 | return; | |
713 | } | |
714 | length = (size_t) num; | |
715 | ||
716 | switch (fd) | |
717 | { | |
718 | case FIO_FD_CONSOLE_OUT: | |
719 | remote_fileio_badfd (); | |
720 | return; | |
721 | case FIO_FD_CONSOLE_IN: | |
722 | { | |
723 | static char *remaining_buf = NULL; | |
724 | static int remaining_length = 0; | |
725 | ||
b86ab4ff | 726 | buffer = (gdb_byte *) xmalloc (16384); |
449092f6 CV |
727 | if (remaining_buf) |
728 | { | |
729 | remote_fio_no_longjmp = 1; | |
730 | if (remaining_length > length) | |
731 | { | |
732 | memcpy (buffer, remaining_buf, length); | |
733 | memmove (remaining_buf, remaining_buf + length, | |
734 | remaining_length - length); | |
735 | remaining_length -= length; | |
736 | ret = length; | |
737 | } | |
738 | else | |
739 | { | |
740 | memcpy (buffer, remaining_buf, remaining_length); | |
741 | xfree (remaining_buf); | |
742 | remaining_buf = NULL; | |
743 | ret = remaining_length; | |
744 | } | |
745 | } | |
746 | else | |
747 | { | |
b86ab4ff DJ |
748 | /* Windows (at least XP and Server 2003) has difficulty |
749 | with large reads from consoles. If a handle is | |
750 | backed by a real console device, overly large reads | |
751 | from the handle will fail and set errno == ENOMEM. | |
752 | On a Windows Server 2003 system where I tested, | |
753 | reading 26608 bytes from the console was OK, but | |
754 | anything above 26609 bytes would fail. The limit has | |
755 | been observed to vary on different systems. So, we | |
756 | limit this read to something smaller than that - by a | |
757 | safe margin, in case the limit depends on system | |
758 | resources or version. */ | |
759 | ret = ui_file_read (gdb_stdtargin, (char *) buffer, 16383); | |
449092f6 CV |
760 | remote_fio_no_longjmp = 1; |
761 | if (ret > 0 && (size_t)ret > length) | |
762 | { | |
763 | remaining_buf = (char *) xmalloc (ret - length); | |
764 | remaining_length = ret - length; | |
765 | memcpy (remaining_buf, buffer + length, remaining_length); | |
766 | ret = length; | |
767 | } | |
768 | } | |
769 | } | |
770 | break; | |
771 | default: | |
cfd77fa1 | 772 | buffer = (gdb_byte *) xmalloc (length); |
449092f6 CV |
773 | /* POSIX defines EINTR behaviour of read in a weird way. It's allowed |
774 | for read() to return -1 even if "some" bytes have been read. It | |
775 | has been corrected in SUSv2 but that doesn't help us much... | |
776 | Therefore a complete solution must check how many bytes have been | |
777 | read on EINTR to return a more reliable value to the target */ | |
778 | old_offset = lseek (fd, 0, SEEK_CUR); | |
779 | remote_fio_no_longjmp = 1; | |
780 | ret = read (fd, buffer, length); | |
781 | if (ret < 0 && errno == EINTR) | |
782 | { | |
783 | new_offset = lseek (fd, 0, SEEK_CUR); | |
784 | /* If some data has been read, return the number of bytes read. | |
0df8b418 | 785 | The Ctrl-C flag is set in remote_fileio_reply() anyway. */ |
449092f6 CV |
786 | if (old_offset != new_offset) |
787 | ret = new_offset - old_offset; | |
788 | } | |
789 | break; | |
790 | } | |
791 | ||
792 | if (ret > 0) | |
793 | { | |
f7605bc2 PA |
794 | errno = target_write_memory (ptrval, buffer, ret); |
795 | if (errno != 0) | |
796 | ret = -1; | |
449092f6 CV |
797 | } |
798 | ||
799 | if (ret < 0) | |
800 | remote_fileio_return_errno (-1); | |
801 | else | |
802 | remote_fileio_return_success (ret); | |
803 | ||
804 | xfree (buffer); | |
805 | } | |
806 | ||
807 | static void | |
808 | remote_fileio_func_write (char *buf) | |
809 | { | |
810 | long target_fd, num; | |
cbcdb1f5 | 811 | LONGEST lnum; |
449092f6 | 812 | CORE_ADDR ptrval; |
f7605bc2 | 813 | int fd, ret; |
cfd77fa1 | 814 | gdb_byte *buffer; |
449092f6 CV |
815 | size_t length; |
816 | ||
817 | /* 1. Parameter: file descriptor */ | |
818 | if (remote_fileio_extract_int (&buf, &target_fd)) | |
819 | { | |
820 | remote_fileio_ioerror (); | |
821 | return; | |
822 | } | |
cbcdb1f5 CV |
823 | fd = remote_fileio_map_fd ((int) target_fd); |
824 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
825 | { |
826 | remote_fileio_badfd (); | |
827 | return; | |
828 | } | |
829 | /* 2. Parameter: buffer pointer */ | |
830 | if (remote_fileio_extract_long (&buf, &lnum)) | |
831 | { | |
832 | remote_fileio_ioerror (); | |
833 | return; | |
834 | } | |
835 | ptrval = (CORE_ADDR) lnum; | |
836 | /* 3. Parameter: buffer length */ | |
837 | if (remote_fileio_extract_int (&buf, &num)) | |
838 | { | |
839 | remote_fileio_ioerror (); | |
840 | return; | |
841 | } | |
842 | length = (size_t) num; | |
843 | ||
cfd77fa1 | 844 | buffer = (gdb_byte *) xmalloc (length); |
f7605bc2 | 845 | if (target_read_memory (ptrval, buffer, length) != 0) |
449092f6 CV |
846 | { |
847 | xfree (buffer); | |
848 | remote_fileio_ioerror (); | |
849 | return; | |
850 | } | |
851 | ||
852 | remote_fio_no_longjmp = 1; | |
853 | switch (fd) | |
854 | { | |
855 | case FIO_FD_CONSOLE_IN: | |
856 | remote_fileio_badfd (); | |
1ed489bd | 857 | xfree (buffer); |
449092f6 CV |
858 | return; |
859 | case FIO_FD_CONSOLE_OUT: | |
cfd77fa1 DJ |
860 | ui_file_write (target_fd == 1 ? gdb_stdtarg : gdb_stdtargerr, |
861 | (char *) buffer, length); | |
449092f6 CV |
862 | gdb_flush (target_fd == 1 ? gdb_stdtarg : gdb_stdtargerr); |
863 | ret = length; | |
864 | break; | |
865 | default: | |
866 | ret = write (fd, buffer, length); | |
867 | if (ret < 0 && errno == EACCES) | |
3e43a32a | 868 | errno = EBADF; /* Cygwin returns EACCESS when writing to a |
0df8b418 | 869 | R/O file. */ |
449092f6 CV |
870 | break; |
871 | } | |
872 | ||
873 | if (ret < 0) | |
874 | remote_fileio_return_errno (-1); | |
875 | else | |
876 | remote_fileio_return_success (ret); | |
877 | ||
878 | xfree (buffer); | |
879 | } | |
880 | ||
881 | static void | |
882 | remote_fileio_func_lseek (char *buf) | |
883 | { | |
884 | long num; | |
cbcdb1f5 | 885 | LONGEST lnum; |
449092f6 CV |
886 | int fd, flag; |
887 | off_t offset, ret; | |
888 | ||
889 | /* 1. Parameter: file descriptor */ | |
890 | if (remote_fileio_extract_int (&buf, &num)) | |
891 | { | |
892 | remote_fileio_ioerror (); | |
893 | return; | |
894 | } | |
cbcdb1f5 CV |
895 | fd = remote_fileio_map_fd ((int) num); |
896 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
897 | { |
898 | remote_fileio_badfd (); | |
899 | return; | |
900 | } | |
901 | else if (fd == FIO_FD_CONSOLE_IN || fd == FIO_FD_CONSOLE_OUT) | |
902 | { | |
903 | remote_fileio_reply (-1, FILEIO_ESPIPE); | |
904 | return; | |
905 | } | |
906 | ||
907 | /* 2. Parameter: offset */ | |
908 | if (remote_fileio_extract_long (&buf, &lnum)) | |
909 | { | |
910 | remote_fileio_ioerror (); | |
911 | return; | |
912 | } | |
913 | offset = (off_t) lnum; | |
914 | /* 3. Parameter: flag */ | |
915 | if (remote_fileio_extract_int (&buf, &num)) | |
916 | { | |
917 | remote_fileio_ioerror (); | |
918 | return; | |
919 | } | |
920 | if (remote_fileio_seek_flag_to_host (num, &flag)) | |
921 | { | |
922 | remote_fileio_reply (-1, FILEIO_EINVAL); | |
923 | return; | |
924 | } | |
925 | ||
926 | remote_fio_no_longjmp = 1; | |
927 | ret = lseek (fd, offset, flag); | |
928 | ||
929 | if (ret == (off_t) -1) | |
930 | remote_fileio_return_errno (-1); | |
931 | else | |
932 | remote_fileio_return_success (ret); | |
933 | } | |
934 | ||
935 | static void | |
936 | remote_fileio_func_rename (char *buf) | |
937 | { | |
86cc68a8 | 938 | CORE_ADDR old_ptr, new_ptr; |
f7605bc2 | 939 | int old_len, new_len; |
449092f6 CV |
940 | char *oldpath, *newpath; |
941 | int ret, of, nf; | |
942 | struct stat ost, nst; | |
943 | ||
944 | /* 1. Parameter: Ptr to oldpath / length incl. trailing zero */ | |
86cc68a8 | 945 | if (remote_fileio_extract_ptr_w_len (&buf, &old_ptr, &old_len)) |
449092f6 CV |
946 | { |
947 | remote_fileio_ioerror (); | |
948 | return; | |
949 | } | |
86cc68a8 NS |
950 | |
951 | /* 2. Parameter: Ptr to newpath / length incl. trailing zero */ | |
952 | if (remote_fileio_extract_ptr_w_len (&buf, &new_ptr, &new_len)) | |
449092f6 CV |
953 | { |
954 | remote_fileio_ioerror (); | |
955 | return; | |
956 | } | |
86cc68a8 NS |
957 | |
958 | /* Request oldpath using 'm' packet */ | |
959 | oldpath = alloca (old_len); | |
f7605bc2 | 960 | if (target_read_memory (old_ptr, (gdb_byte *) oldpath, old_len) != 0) |
449092f6 CV |
961 | { |
962 | remote_fileio_ioerror (); | |
963 | return; | |
964 | } | |
86cc68a8 | 965 | |
449092f6 | 966 | /* Request newpath using 'm' packet */ |
86cc68a8 | 967 | newpath = alloca (new_len); |
f7605bc2 | 968 | if (target_read_memory (new_ptr, (gdb_byte *) newpath, new_len) != 0) |
449092f6 CV |
969 | { |
970 | remote_fileio_ioerror (); | |
971 | return; | |
972 | } | |
973 | ||
0df8b418 | 974 | /* Only operate on regular files and directories. */ |
cbcdb1f5 CV |
975 | of = stat (oldpath, &ost); |
976 | nf = stat (newpath, &nst); | |
977 | if ((!of && !S_ISREG (ost.st_mode) && !S_ISDIR (ost.st_mode)) | |
978 | || (!nf && !S_ISREG (nst.st_mode) && !S_ISDIR (nst.st_mode))) | |
449092f6 CV |
979 | { |
980 | remote_fileio_reply (-1, FILEIO_EACCES); | |
981 | return; | |
982 | } | |
983 | ||
984 | remote_fio_no_longjmp = 1; | |
985 | ret = rename (oldpath, newpath); | |
986 | ||
987 | if (ret == -1) | |
988 | { | |
989 | /* Special case: newpath is a non-empty directory. Some systems | |
990 | return ENOTEMPTY, some return EEXIST. We coerce that to be | |
0df8b418 | 991 | always EEXIST. */ |
449092f6 CV |
992 | if (errno == ENOTEMPTY) |
993 | errno = EEXIST; | |
994 | #ifdef __CYGWIN__ | |
0df8b418 | 995 | /* Workaround some Cygwin problems with correct errnos. */ |
449092f6 CV |
996 | if (errno == EACCES) |
997 | { | |
998 | if (!of && !nf && S_ISDIR (nst.st_mode)) | |
999 | { | |
1000 | if (S_ISREG (ost.st_mode)) | |
1001 | errno = EISDIR; | |
1002 | else | |
1003 | { | |
d0d0ab16 CV |
1004 | char oldfullpath[PATH_MAX]; |
1005 | char newfullpath[PATH_MAX]; | |
449092f6 CV |
1006 | int len; |
1007 | ||
d0d0ab16 CV |
1008 | cygwin_conv_path (CCP_WIN_A_TO_POSIX, oldpath, oldfullpath, |
1009 | PATH_MAX); | |
1010 | cygwin_conv_path (CCP_WIN_A_TO_POSIX, newpath, newfullpath, | |
1011 | PATH_MAX); | |
449092f6 | 1012 | len = strlen (oldfullpath); |
0ba1096a KT |
1013 | if (IS_DIR_SEPARATOR (newfullpath[len]) |
1014 | && !filename_ncmp (oldfullpath, newfullpath, len)) | |
449092f6 CV |
1015 | errno = EINVAL; |
1016 | else | |
1017 | errno = EEXIST; | |
1018 | } | |
1019 | } | |
1020 | } | |
1021 | #endif | |
1022 | ||
1023 | remote_fileio_return_errno (-1); | |
1024 | } | |
1025 | else | |
1026 | remote_fileio_return_success (ret); | |
1027 | } | |
1028 | ||
1029 | static void | |
1030 | remote_fileio_func_unlink (char *buf) | |
1031 | { | |
1032 | CORE_ADDR ptrval; | |
f7605bc2 | 1033 | int length; |
449092f6 CV |
1034 | char *pathname; |
1035 | int ret; | |
1036 | struct stat st; | |
1037 | ||
1038 | /* Parameter: Ptr to pathname / length incl. trailing zero */ | |
1039 | if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length)) | |
1040 | { | |
1041 | remote_fileio_ioerror (); | |
1042 | return; | |
1043 | } | |
1044 | /* Request pathname using 'm' packet */ | |
1045 | pathname = alloca (length); | |
f7605bc2 | 1046 | if (target_read_memory (ptrval, (gdb_byte *) pathname, length) != 0) |
449092f6 CV |
1047 | { |
1048 | remote_fileio_ioerror (); | |
1049 | return; | |
1050 | } | |
1051 | ||
1052 | /* Only operate on regular files (and directories, which allows to return | |
0df8b418 | 1053 | the correct return code). */ |
449092f6 CV |
1054 | if (!stat (pathname, &st) && !S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode)) |
1055 | { | |
1056 | remote_fileio_reply (-1, FILEIO_ENODEV); | |
1057 | return; | |
1058 | } | |
1059 | ||
1060 | remote_fio_no_longjmp = 1; | |
1061 | ret = unlink (pathname); | |
1062 | ||
1063 | if (ret == -1) | |
1064 | remote_fileio_return_errno (-1); | |
1065 | else | |
1066 | remote_fileio_return_success (ret); | |
1067 | } | |
1068 | ||
1069 | static void | |
1070 | remote_fileio_func_stat (char *buf) | |
1071 | { | |
86cc68a8 | 1072 | CORE_ADDR statptr, nameptr; |
f7605bc2 | 1073 | int ret, namelength; |
449092f6 | 1074 | char *pathname; |
cbcdb1f5 | 1075 | LONGEST lnum; |
449092f6 CV |
1076 | struct stat st; |
1077 | struct fio_stat fst; | |
1078 | ||
1079 | /* 1. Parameter: Ptr to pathname / length incl. trailing zero */ | |
86cc68a8 | 1080 | if (remote_fileio_extract_ptr_w_len (&buf, &nameptr, &namelength)) |
449092f6 CV |
1081 | { |
1082 | remote_fileio_ioerror (); | |
1083 | return; | |
1084 | } | |
86cc68a8 NS |
1085 | |
1086 | /* 2. Parameter: Ptr to struct stat */ | |
1087 | if (remote_fileio_extract_long (&buf, &lnum)) | |
449092f6 CV |
1088 | { |
1089 | remote_fileio_ioerror (); | |
1090 | return; | |
1091 | } | |
86cc68a8 NS |
1092 | statptr = (CORE_ADDR) lnum; |
1093 | ||
1094 | /* Request pathname using 'm' packet */ | |
1095 | pathname = alloca (namelength); | |
f7605bc2 | 1096 | if (target_read_memory (nameptr, (gdb_byte *) pathname, namelength) != 0) |
449092f6 CV |
1097 | { |
1098 | remote_fileio_ioerror (); | |
1099 | return; | |
1100 | } | |
449092f6 CV |
1101 | |
1102 | remote_fio_no_longjmp = 1; | |
1103 | ret = stat (pathname, &st); | |
1104 | ||
1105 | if (ret == -1) | |
1106 | { | |
1107 | remote_fileio_return_errno (-1); | |
1108 | return; | |
1109 | } | |
0df8b418 | 1110 | /* Only operate on regular files and directories. */ |
449092f6 CV |
1111 | if (!ret && !S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode)) |
1112 | { | |
1113 | remote_fileio_reply (-1, FILEIO_EACCES); | |
1114 | return; | |
1115 | } | |
86cc68a8 | 1116 | if (statptr) |
449092f6 CV |
1117 | { |
1118 | remote_fileio_to_fio_stat (&st, &fst); | |
1119 | remote_fileio_to_fio_uint (0, fst.fst_dev); | |
f7605bc2 PA |
1120 | |
1121 | errno = target_write_memory (statptr, (gdb_byte *) &fst, sizeof fst); | |
1122 | if (errno != 0) | |
449092f6 CV |
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; | |
22e048c9 | 1135 | int fd, ret; |
449092f6 | 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); | |
2e3fd767 | 1166 | memset (&st, 0, sizeof (st)); |
449092f6 CV |
1167 | st.st_mode = S_IFCHR | (fd == FIO_FD_CONSOLE_IN ? S_IRUSR : S_IWUSR); |
1168 | st.st_nlink = 1; | |
d3ea6809 | 1169 | #ifdef HAVE_GETUID |
449092f6 | 1170 | st.st_uid = getuid (); |
d3ea6809 MM |
1171 | #endif |
1172 | #ifdef HAVE_GETGID | |
449092f6 | 1173 | st.st_gid = getgid (); |
d3ea6809 | 1174 | #endif |
d3ea6809 | 1175 | #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE |
449092f6 | 1176 | st.st_blksize = 512; |
d3ea6809 | 1177 | #endif |
1dd727e9 | 1178 | #if HAVE_STRUCT_STAT_ST_BLOCKS |
449092f6 | 1179 | st.st_blocks = 0; |
1dd727e9 | 1180 | #endif |
449092f6 CV |
1181 | if (!gettimeofday (&tv, NULL)) |
1182 | st.st_atime = st.st_mtime = st.st_ctime = tv.tv_sec; | |
1183 | else | |
1184 | st.st_atime = st.st_mtime = st.st_ctime = (time_t) 0; | |
1185 | ret = 0; | |
1186 | } | |
1187 | else | |
1188 | ret = fstat (fd, &st); | |
1189 | ||
1190 | if (ret == -1) | |
1191 | { | |
1192 | remote_fileio_return_errno (-1); | |
1193 | return; | |
1194 | } | |
1195 | if (ptrval) | |
1196 | { | |
1197 | remote_fileio_to_fio_stat (&st, &fst); | |
1198 | ||
f7605bc2 PA |
1199 | errno = target_write_memory (ptrval, (gdb_byte *) &fst, sizeof fst); |
1200 | if (errno != 0) | |
449092f6 CV |
1201 | { |
1202 | remote_fileio_return_errno (-1); | |
1203 | return; | |
1204 | } | |
1205 | } | |
1206 | remote_fileio_return_success (ret); | |
1207 | } | |
1208 | ||
1209 | static void | |
1210 | remote_fileio_func_gettimeofday (char *buf) | |
1211 | { | |
cbcdb1f5 | 1212 | LONGEST lnum; |
449092f6 | 1213 | CORE_ADDR ptrval; |
22e048c9 | 1214 | int ret; |
449092f6 CV |
1215 | struct timeval tv; |
1216 | struct fio_timeval ftv; | |
1217 | ||
1218 | /* 1. Parameter: struct timeval pointer */ | |
1219 | if (remote_fileio_extract_long (&buf, &lnum)) | |
1220 | { | |
1221 | remote_fileio_ioerror (); | |
1222 | return; | |
1223 | } | |
1224 | ptrval = (CORE_ADDR) lnum; | |
0df8b418 | 1225 | /* 2. Parameter: some pointer value... */ |
449092f6 CV |
1226 | if (remote_fileio_extract_long (&buf, &lnum)) |
1227 | { | |
1228 | remote_fileio_ioerror (); | |
1229 | return; | |
1230 | } | |
0df8b418 | 1231 | /* ...which has to be NULL. */ |
449092f6 CV |
1232 | if (lnum) |
1233 | { | |
1234 | remote_fileio_reply (-1, FILEIO_EINVAL); | |
1235 | return; | |
1236 | } | |
1237 | ||
1238 | remote_fio_no_longjmp = 1; | |
1239 | ret = gettimeofday (&tv, NULL); | |
1240 | ||
1241 | if (ret == -1) | |
1242 | { | |
1243 | remote_fileio_return_errno (-1); | |
1244 | return; | |
1245 | } | |
1246 | ||
1247 | if (ptrval) | |
1248 | { | |
1249 | remote_fileio_to_fio_timeval (&tv, &ftv); | |
1250 | ||
f7605bc2 PA |
1251 | errno = target_write_memory (ptrval, (gdb_byte *) &ftv, sizeof ftv); |
1252 | if (errno != 0) | |
449092f6 CV |
1253 | { |
1254 | remote_fileio_return_errno (-1); | |
1255 | return; | |
1256 | } | |
1257 | } | |
1258 | remote_fileio_return_success (ret); | |
1259 | } | |
1260 | ||
1261 | static void | |
1262 | remote_fileio_func_isatty (char *buf) | |
1263 | { | |
1264 | long target_fd; | |
1265 | int fd; | |
1266 | ||
1267 | /* Parameter: file descriptor */ | |
1268 | if (remote_fileio_extract_int (&buf, &target_fd)) | |
1269 | { | |
1270 | remote_fileio_ioerror (); | |
1271 | return; | |
1272 | } | |
1273 | remote_fio_no_longjmp = 1; | |
1274 | fd = remote_fileio_map_fd ((int) target_fd); | |
1275 | remote_fileio_return_success (fd == FIO_FD_CONSOLE_IN || | |
1276 | fd == FIO_FD_CONSOLE_OUT ? 1 : 0); | |
1277 | } | |
1278 | ||
1279 | static void | |
1280 | remote_fileio_func_system (char *buf) | |
1281 | { | |
1282 | CORE_ADDR ptrval; | |
22e048c9 | 1283 | int ret, length; |
5600ea19 | 1284 | char *cmdline = NULL; |
449092f6 CV |
1285 | |
1286 | /* Parameter: Ptr to commandline / length incl. trailing zero */ | |
1287 | if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length)) | |
1288 | { | |
1289 | remote_fileio_ioerror (); | |
1290 | return; | |
1291 | } | |
5600ea19 NS |
1292 | |
1293 | if (length) | |
449092f6 | 1294 | { |
5600ea19 NS |
1295 | /* Request commandline using 'm' packet */ |
1296 | cmdline = alloca (length); | |
f7605bc2 | 1297 | if (target_read_memory (ptrval, (gdb_byte *) cmdline, length) != 0) |
5600ea19 NS |
1298 | { |
1299 | remote_fileio_ioerror (); | |
1300 | return; | |
1301 | } | |
1302 | } | |
1303 | ||
1304 | /* Check if system(3) has been explicitely allowed using the | |
1305 | `set remote system-call-allowed 1' command. If length is 0, | |
1306 | indicating a NULL parameter to the system call, return zero to | |
1307 | indicate a shell is not available. Otherwise fail with EPERM. */ | |
1308 | if (!remote_fio_system_call_allowed) | |
1309 | { | |
1310 | if (!length) | |
1311 | remote_fileio_return_success (0); | |
1312 | else | |
1313 | remote_fileio_reply (-1, FILEIO_EPERM); | |
449092f6 CV |
1314 | return; |
1315 | } | |
1316 | ||
1317 | remote_fio_no_longjmp = 1; | |
1318 | ret = system (cmdline); | |
1319 | ||
5600ea19 NS |
1320 | if (!length) |
1321 | remote_fileio_return_success (ret); | |
1322 | else if (ret == -1) | |
449092f6 CV |
1323 | remote_fileio_return_errno (-1); |
1324 | else | |
1325 | remote_fileio_return_success (WEXITSTATUS (ret)); | |
1326 | } | |
1327 | ||
1328 | static struct { | |
1329 | char *name; | |
1330 | void (*func)(char *); | |
1331 | } remote_fio_func_map[] = { | |
d5d6fca5 DJ |
1332 | { "open", remote_fileio_func_open }, |
1333 | { "close", remote_fileio_func_close }, | |
1334 | { "read", remote_fileio_func_read }, | |
1335 | { "write", remote_fileio_func_write }, | |
1336 | { "lseek", remote_fileio_func_lseek }, | |
1337 | { "rename", remote_fileio_func_rename }, | |
1338 | { "unlink", remote_fileio_func_unlink }, | |
1339 | { "stat", remote_fileio_func_stat }, | |
1340 | { "fstat", remote_fileio_func_fstat }, | |
1341 | { "gettimeofday", remote_fileio_func_gettimeofday }, | |
1342 | { "isatty", remote_fileio_func_isatty }, | |
1343 | { "system", remote_fileio_func_system }, | |
1344 | { NULL, NULL } | |
449092f6 CV |
1345 | }; |
1346 | ||
1347 | static int | |
1348 | do_remote_fileio_request (struct ui_out *uiout, void *buf_arg) | |
1349 | { | |
1350 | char *buf = buf_arg; | |
1351 | char *c; | |
1352 | int idx; | |
1353 | ||
1354 | remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler); | |
1355 | ||
1356 | c = strchr (++buf, ','); | |
1357 | if (c) | |
1358 | *c++ = '\0'; | |
1359 | else | |
1360 | c = strchr (buf, '\0'); | |
1361 | for (idx = 0; remote_fio_func_map[idx].name; ++idx) | |
1362 | if (!strcmp (remote_fio_func_map[idx].name, buf)) | |
1363 | break; | |
0df8b418 | 1364 | if (!remote_fio_func_map[idx].name) /* ERROR: No such function. */ |
449092f6 CV |
1365 | return RETURN_ERROR; |
1366 | remote_fio_func_map[idx].func (c); | |
1367 | return 0; | |
1368 | } | |
1369 | ||
ad9a8f3f NS |
1370 | /* Close any open descriptors, and reinitialize the file mapping. */ |
1371 | ||
1372 | void | |
1373 | remote_fileio_reset (void) | |
1374 | { | |
1375 | int ix; | |
1376 | ||
1377 | for (ix = 0; ix != remote_fio_data.fd_map_size; ix++) | |
1378 | { | |
1379 | int fd = remote_fio_data.fd_map[ix]; | |
1380 | ||
1381 | if (fd >= 0) | |
1382 | close (fd); | |
1383 | } | |
1384 | if (remote_fio_data.fd_map) | |
1385 | { | |
6c761d9c | 1386 | xfree (remote_fio_data.fd_map); |
ad9a8f3f NS |
1387 | remote_fio_data.fd_map = NULL; |
1388 | remote_fio_data.fd_map_size = 0; | |
1389 | } | |
1390 | } | |
1391 | ||
0df8b418 MS |
1392 | /* Handle a file I/O request. BUF points to the packet containing the |
1393 | request. CTRLC_PENDING_P should be nonzero if the target has not | |
3a29589a DJ |
1394 | acknowledged the Ctrl-C sent asynchronously earlier. */ |
1395 | ||
449092f6 | 1396 | void |
3a29589a | 1397 | remote_fileio_request (char *buf, int ctrlc_pending_p) |
449092f6 CV |
1398 | { |
1399 | int ex; | |
1400 | ||
1401 | remote_fileio_sig_init (); | |
1402 | ||
3a29589a | 1403 | if (ctrlc_pending_p) |
449092f6 | 1404 | { |
3a29589a DJ |
1405 | /* If the target hasn't responded to the Ctrl-C sent |
1406 | asynchronously earlier, take this opportunity to send the | |
1407 | Ctrl-C synchronously. */ | |
1408 | remote_fio_ctrl_c_flag = 1; | |
1409 | remote_fio_no_longjmp = 0; | |
1410 | remote_fileio_reply (-1, FILEIO_EINTR); | |
1411 | } | |
1412 | else | |
1413 | { | |
1414 | remote_fio_ctrl_c_flag = 0; | |
1415 | remote_fio_no_longjmp = 0; | |
1416 | ||
79a45e25 PA |
1417 | ex = catch_exceptions (current_uiout, |
1418 | do_remote_fileio_request, (void *)buf, | |
3a29589a DJ |
1419 | RETURN_MASK_ALL); |
1420 | switch (ex) | |
1421 | { | |
1422 | case RETURN_ERROR: | |
1423 | remote_fileio_reply (-1, FILEIO_ENOSYS); | |
1424 | break; | |
1425 | case RETURN_QUIT: | |
1426 | remote_fileio_reply (-1, FILEIO_EINTR); | |
1427 | break; | |
1428 | default: | |
1429 | break; | |
1430 | } | |
449092f6 CV |
1431 | } |
1432 | ||
1433 | remote_fileio_sig_exit (); | |
1434 | } | |
1435 | ||
1436 | static void | |
1437 | set_system_call_allowed (char *args, int from_tty) | |
1438 | { | |
1439 | if (args) | |
1440 | { | |
1441 | char *arg_end; | |
1442 | int val = strtoul (args, &arg_end, 10); | |
123f5f96 | 1443 | |
449092f6 CV |
1444 | if (*args && *arg_end == '\0') |
1445 | { | |
1446 | remote_fio_system_call_allowed = !!val; | |
1447 | return; | |
1448 | } | |
1449 | } | |
8a3fe4f8 | 1450 | error (_("Illegal argument for \"set remote system-call-allowed\" command")); |
449092f6 CV |
1451 | } |
1452 | ||
1453 | static void | |
1454 | show_system_call_allowed (char *args, int from_tty) | |
1455 | { | |
1456 | if (args) | |
3e43a32a MS |
1457 | error (_("Garbage after \"show remote " |
1458 | "system-call-allowed\" command: `%s'"), args); | |
449092f6 CV |
1459 | printf_unfiltered ("Calling host system(3) call from target is %sallowed\n", |
1460 | remote_fio_system_call_allowed ? "" : "not "); | |
1461 | } | |
1462 | ||
1463 | void | |
1464 | initialize_remote_fileio (struct cmd_list_element *remote_set_cmdlist, | |
1465 | struct cmd_list_element *remote_show_cmdlist) | |
1466 | { | |
b803fb0f DJ |
1467 | sigint_fileio_token = |
1468 | create_async_signal_handler (async_remote_fileio_interrupt, NULL); | |
1469 | ||
449092f6 CV |
1470 | add_cmd ("system-call-allowed", no_class, |
1471 | set_system_call_allowed, | |
1a966eab | 1472 | _("Set if the host system(3) call is allowed for the target."), |
449092f6 CV |
1473 | &remote_set_cmdlist); |
1474 | add_cmd ("system-call-allowed", no_class, | |
1475 | show_system_call_allowed, | |
1a966eab | 1476 | _("Show if the host system(3) call is allowed for the target."), |
449092f6 CV |
1477 | &remote_show_cmdlist); |
1478 | } |