Commit | Line | Data |
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449092f6 CV |
1 | /* Remote File-I/O communications |
2 | ||
9b254dd1 | 3 | Copyright (C) 2003, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
449092f6 CV |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
449092f6 CV |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
449092f6 CV |
19 | |
20 | /* See the GDB User Guide for details of the GDB remote protocol. */ | |
21 | ||
22 | #include "defs.h" | |
23 | #include "gdb_string.h" | |
24 | #include "gdbcmd.h" | |
25 | #include "remote.h" | |
26 | #include "gdb/fileio.h" | |
0ef75e11 AC |
27 | #include "gdb_wait.h" |
28 | #include "gdb_stat.h" | |
60250e8b | 29 | #include "exceptions.h" |
cd90e54f | 30 | #include "remote-fileio.h" |
b803fb0f | 31 | #include "event-loop.h" |
449092f6 | 32 | |
449092f6 CV |
33 | #include <fcntl.h> |
34 | #include <sys/time.h> | |
449092f6 | 35 | #ifdef __CYGWIN__ |
0ef75e11 | 36 | #include <sys/cygwin.h> /* For cygwin_conv_to_full_posix_path. */ |
449092f6 | 37 | #endif |
449092f6 CV |
38 | #include <signal.h> |
39 | ||
40 | static struct { | |
41 | int *fd_map; | |
42 | int fd_map_size; | |
43 | } remote_fio_data; | |
44 | ||
45 | #define FIO_FD_INVALID -1 | |
46 | #define FIO_FD_CONSOLE_IN -2 | |
47 | #define FIO_FD_CONSOLE_OUT -3 | |
48 | ||
49 | static int remote_fio_system_call_allowed = 0; | |
50 | ||
b803fb0f DJ |
51 | static struct async_signal_handler *sigint_fileio_token; |
52 | ||
449092f6 | 53 | static int |
cbcdb1f5 | 54 | remote_fileio_init_fd_map (void) |
449092f6 CV |
55 | { |
56 | int i; | |
57 | ||
58 | if (!remote_fio_data.fd_map) | |
59 | { | |
60 | remote_fio_data.fd_map = (int *) xmalloc (10 * sizeof (int)); | |
61 | remote_fio_data.fd_map_size = 10; | |
62 | remote_fio_data.fd_map[0] = FIO_FD_CONSOLE_IN; | |
63 | remote_fio_data.fd_map[1] = FIO_FD_CONSOLE_OUT; | |
64 | remote_fio_data.fd_map[2] = FIO_FD_CONSOLE_OUT; | |
65 | for (i = 3; i < 10; ++i) | |
66 | remote_fio_data.fd_map[i] = FIO_FD_INVALID; | |
67 | } | |
68 | return 3; | |
69 | } | |
70 | ||
71 | static int | |
cbcdb1f5 | 72 | remote_fileio_resize_fd_map (void) |
449092f6 | 73 | { |
9f8e6999 MG |
74 | int i = remote_fio_data.fd_map_size; |
75 | ||
449092f6 CV |
76 | if (!remote_fio_data.fd_map) |
77 | return remote_fileio_init_fd_map (); | |
78 | remote_fio_data.fd_map_size += 10; | |
79 | remote_fio_data.fd_map = | |
80 | (int *) xrealloc (remote_fio_data.fd_map, | |
81 | remote_fio_data.fd_map_size * sizeof (int)); | |
9f8e6999 MG |
82 | for (; i < remote_fio_data.fd_map_size; i++) |
83 | remote_fio_data.fd_map[i] = FIO_FD_INVALID; | |
449092f6 CV |
84 | return remote_fio_data.fd_map_size - 10; |
85 | } | |
86 | ||
87 | static int | |
cbcdb1f5 | 88 | remote_fileio_next_free_fd (void) |
449092f6 CV |
89 | { |
90 | int i; | |
91 | ||
92 | for (i = 0; i < remote_fio_data.fd_map_size; ++i) | |
93 | if (remote_fio_data.fd_map[i] == FIO_FD_INVALID) | |
94 | return i; | |
95 | return remote_fileio_resize_fd_map (); | |
96 | } | |
97 | ||
98 | static int | |
99 | remote_fileio_fd_to_targetfd (int fd) | |
100 | { | |
101 | int target_fd = remote_fileio_next_free_fd (); | |
102 | remote_fio_data.fd_map[target_fd] = fd; | |
103 | return target_fd; | |
104 | } | |
105 | ||
106 | static int | |
107 | remote_fileio_map_fd (int target_fd) | |
108 | { | |
109 | remote_fileio_init_fd_map (); | |
110 | if (target_fd < 0 || target_fd >= remote_fio_data.fd_map_size) | |
111 | return FIO_FD_INVALID; | |
112 | return remote_fio_data.fd_map[target_fd]; | |
113 | } | |
114 | ||
115 | static void | |
116 | remote_fileio_close_target_fd (int target_fd) | |
117 | { | |
118 | remote_fileio_init_fd_map (); | |
119 | if (target_fd >= 0 && target_fd < remote_fio_data.fd_map_size) | |
120 | remote_fio_data.fd_map[target_fd] = FIO_FD_INVALID; | |
121 | } | |
122 | ||
123 | static int | |
124 | remote_fileio_oflags_to_host (long flags) | |
125 | { | |
126 | int hflags = 0; | |
127 | ||
128 | if (flags & FILEIO_O_CREAT) | |
129 | hflags |= O_CREAT; | |
130 | if (flags & FILEIO_O_EXCL) | |
131 | hflags |= O_EXCL; | |
132 | if (flags & FILEIO_O_TRUNC) | |
133 | hflags |= O_TRUNC; | |
134 | if (flags & FILEIO_O_APPEND) | |
135 | hflags |= O_APPEND; | |
136 | if (flags & FILEIO_O_RDONLY) | |
137 | hflags |= O_RDONLY; | |
138 | if (flags & FILEIO_O_WRONLY) | |
139 | hflags |= O_WRONLY; | |
140 | if (flags & FILEIO_O_RDWR) | |
141 | hflags |= O_RDWR; | |
142 | /* On systems supporting binary and text mode, always open files in | |
143 | binary mode. */ | |
144 | #ifdef O_BINARY | |
145 | hflags |= O_BINARY; | |
146 | #endif | |
147 | return hflags; | |
148 | } | |
149 | ||
150 | static mode_t | |
151 | remote_fileio_mode_to_host (long mode, int open_call) | |
152 | { | |
153 | mode_t hmode = 0; | |
154 | ||
155 | if (!open_call) | |
156 | { | |
157 | if (mode & FILEIO_S_IFREG) | |
158 | hmode |= S_IFREG; | |
159 | if (mode & FILEIO_S_IFDIR) | |
160 | hmode |= S_IFDIR; | |
161 | if (mode & FILEIO_S_IFCHR) | |
162 | hmode |= S_IFCHR; | |
163 | } | |
164 | if (mode & FILEIO_S_IRUSR) | |
165 | hmode |= S_IRUSR; | |
166 | if (mode & FILEIO_S_IWUSR) | |
167 | hmode |= S_IWUSR; | |
168 | if (mode & FILEIO_S_IXUSR) | |
169 | hmode |= S_IXUSR; | |
9b265ec2 | 170 | #ifdef S_IRGRP |
449092f6 CV |
171 | if (mode & FILEIO_S_IRGRP) |
172 | hmode |= S_IRGRP; | |
9b265ec2 MM |
173 | #endif |
174 | #ifdef S_IWGRP | |
449092f6 CV |
175 | if (mode & FILEIO_S_IWGRP) |
176 | hmode |= S_IWGRP; | |
9b265ec2 MM |
177 | #endif |
178 | #ifdef S_IXGRP | |
449092f6 CV |
179 | if (mode & FILEIO_S_IXGRP) |
180 | hmode |= S_IXGRP; | |
9b265ec2 | 181 | #endif |
449092f6 CV |
182 | if (mode & FILEIO_S_IROTH) |
183 | hmode |= S_IROTH; | |
9b265ec2 | 184 | #ifdef S_IWOTH |
449092f6 CV |
185 | if (mode & FILEIO_S_IWOTH) |
186 | hmode |= S_IWOTH; | |
9b265ec2 MM |
187 | #endif |
188 | #ifdef S_IXOTH | |
449092f6 CV |
189 | if (mode & FILEIO_S_IXOTH) |
190 | hmode |= S_IXOTH; | |
9b265ec2 | 191 | #endif |
449092f6 CV |
192 | return hmode; |
193 | } | |
194 | ||
cbcdb1f5 | 195 | static LONGEST |
449092f6 CV |
196 | remote_fileio_mode_to_target (mode_t mode) |
197 | { | |
198 | mode_t tmode = 0; | |
199 | ||
9c7deb13 | 200 | if (S_ISREG(mode)) |
449092f6 | 201 | tmode |= FILEIO_S_IFREG; |
9c7deb13 | 202 | if (S_ISDIR(mode)) |
449092f6 | 203 | tmode |= FILEIO_S_IFDIR; |
9c7deb13 | 204 | if (S_ISCHR(mode)) |
449092f6 CV |
205 | tmode |= FILEIO_S_IFCHR; |
206 | if (mode & S_IRUSR) | |
207 | tmode |= FILEIO_S_IRUSR; | |
208 | if (mode & S_IWUSR) | |
209 | tmode |= FILEIO_S_IWUSR; | |
210 | if (mode & S_IXUSR) | |
211 | tmode |= FILEIO_S_IXUSR; | |
9b265ec2 | 212 | #ifdef S_IRGRP |
449092f6 CV |
213 | if (mode & S_IRGRP) |
214 | tmode |= FILEIO_S_IRGRP; | |
9b265ec2 MM |
215 | #endif |
216 | #ifdef S_IWRGRP | |
449092f6 CV |
217 | if (mode & S_IWGRP) |
218 | tmode |= FILEIO_S_IWGRP; | |
9b265ec2 MM |
219 | #endif |
220 | #ifdef S_IXGRP | |
449092f6 CV |
221 | if (mode & S_IXGRP) |
222 | tmode |= FILEIO_S_IXGRP; | |
9b265ec2 | 223 | #endif |
449092f6 CV |
224 | if (mode & S_IROTH) |
225 | tmode |= FILEIO_S_IROTH; | |
9b265ec2 | 226 | #ifdef S_IWOTH |
449092f6 CV |
227 | if (mode & S_IWOTH) |
228 | tmode |= FILEIO_S_IWOTH; | |
9b265ec2 MM |
229 | #endif |
230 | #ifdef S_IXOTH | |
449092f6 CV |
231 | if (mode & S_IXOTH) |
232 | tmode |= FILEIO_S_IXOTH; | |
9b265ec2 | 233 | #endif |
449092f6 CV |
234 | return tmode; |
235 | } | |
236 | ||
237 | static int | |
238 | remote_fileio_errno_to_target (int error) | |
239 | { | |
240 | switch (error) | |
241 | { | |
242 | case EPERM: | |
243 | return FILEIO_EPERM; | |
244 | case ENOENT: | |
245 | return FILEIO_ENOENT; | |
246 | case EINTR: | |
247 | return FILEIO_EINTR; | |
248 | case EIO: | |
249 | return FILEIO_EIO; | |
250 | case EBADF: | |
251 | return FILEIO_EBADF; | |
252 | case EACCES: | |
253 | return FILEIO_EACCES; | |
254 | case EFAULT: | |
255 | return FILEIO_EFAULT; | |
256 | case EBUSY: | |
257 | return FILEIO_EBUSY; | |
258 | case EEXIST: | |
259 | return FILEIO_EEXIST; | |
260 | case ENODEV: | |
261 | return FILEIO_ENODEV; | |
262 | case ENOTDIR: | |
263 | return FILEIO_ENOTDIR; | |
264 | case EISDIR: | |
265 | return FILEIO_EISDIR; | |
266 | case EINVAL: | |
267 | return FILEIO_EINVAL; | |
268 | case ENFILE: | |
269 | return FILEIO_ENFILE; | |
270 | case EMFILE: | |
271 | return FILEIO_EMFILE; | |
272 | case EFBIG: | |
273 | return FILEIO_EFBIG; | |
274 | case ENOSPC: | |
275 | return FILEIO_ENOSPC; | |
276 | case ESPIPE: | |
277 | return FILEIO_ESPIPE; | |
278 | case EROFS: | |
279 | return FILEIO_EROFS; | |
280 | case ENOSYS: | |
281 | return FILEIO_ENOSYS; | |
282 | case ENAMETOOLONG: | |
283 | return FILEIO_ENAMETOOLONG; | |
284 | } | |
285 | return FILEIO_EUNKNOWN; | |
286 | } | |
287 | ||
288 | static int | |
289 | remote_fileio_seek_flag_to_host (long num, int *flag) | |
290 | { | |
291 | if (!flag) | |
292 | return 0; | |
293 | switch (num) | |
294 | { | |
295 | case FILEIO_SEEK_SET: | |
296 | *flag = SEEK_SET; | |
297 | break; | |
298 | case FILEIO_SEEK_CUR: | |
299 | *flag = SEEK_CUR; | |
300 | break; | |
301 | case FILEIO_SEEK_END: | |
302 | *flag = SEEK_END; | |
303 | break; | |
304 | default: | |
305 | return -1; | |
306 | } | |
307 | return 0; | |
308 | } | |
309 | ||
310 | static int | |
cbcdb1f5 | 311 | remote_fileio_extract_long (char **buf, LONGEST *retlong) |
449092f6 CV |
312 | { |
313 | char *c; | |
314 | int sign = 1; | |
315 | ||
316 | if (!buf || !*buf || !**buf || !retlong) | |
317 | return -1; | |
318 | c = strchr (*buf, ','); | |
319 | if (c) | |
320 | *c++ = '\0'; | |
321 | else | |
322 | c = strchr (*buf, '\0'); | |
323 | while (strchr ("+-", **buf)) | |
324 | { | |
325 | if (**buf == '-') | |
326 | sign = -sign; | |
327 | ++*buf; | |
328 | } | |
329 | for (*retlong = 0; **buf; ++*buf) | |
330 | { | |
331 | *retlong <<= 4; | |
332 | if (**buf >= '0' && **buf <= '9') | |
333 | *retlong += **buf - '0'; | |
334 | else if (**buf >= 'a' && **buf <= 'f') | |
335 | *retlong += **buf - 'a' + 10; | |
336 | else if (**buf >= 'A' && **buf <= 'F') | |
337 | *retlong += **buf - 'A' + 10; | |
338 | else | |
339 | return -1; | |
340 | } | |
341 | *retlong *= sign; | |
342 | *buf = c; | |
343 | return 0; | |
344 | } | |
345 | ||
346 | static int | |
347 | remote_fileio_extract_int (char **buf, long *retint) | |
348 | { | |
349 | int ret; | |
cbcdb1f5 | 350 | LONGEST retlong; |
449092f6 CV |
351 | |
352 | if (!retint) | |
353 | return -1; | |
cbcdb1f5 CV |
354 | ret = remote_fileio_extract_long (buf, &retlong); |
355 | if (!ret) | |
449092f6 CV |
356 | *retint = (long) retlong; |
357 | return ret; | |
358 | } | |
359 | ||
360 | static int | |
361 | remote_fileio_extract_ptr_w_len (char **buf, CORE_ADDR *ptrval, int *length) | |
362 | { | |
363 | char *c; | |
cbcdb1f5 | 364 | LONGEST retlong; |
449092f6 CV |
365 | |
366 | if (!buf || !*buf || !**buf || !ptrval || !length) | |
367 | return -1; | |
368 | c = strchr (*buf, '/'); | |
369 | if (!c) | |
370 | return -1; | |
371 | *c++ = '\0'; | |
372 | if (remote_fileio_extract_long (buf, &retlong)) | |
373 | return -1; | |
374 | *ptrval = (CORE_ADDR) retlong; | |
375 | *buf = c; | |
376 | if (remote_fileio_extract_long (buf, &retlong)) | |
377 | return -1; | |
378 | *length = (int) retlong; | |
379 | return 0; | |
380 | } | |
381 | ||
382 | /* Convert to big endian */ | |
383 | static void | |
cbcdb1f5 | 384 | remote_fileio_to_be (LONGEST num, char *buf, int bytes) |
449092f6 CV |
385 | { |
386 | int i; | |
387 | ||
388 | for (i = 0; i < bytes; ++i) | |
389 | buf[i] = (num >> (8 * (bytes - i - 1))) & 0xff; | |
390 | } | |
391 | ||
449092f6 CV |
392 | static void |
393 | remote_fileio_to_fio_uint (long num, fio_uint_t fnum) | |
394 | { | |
cbcdb1f5 | 395 | remote_fileio_to_be ((LONGEST) num, (char *) fnum, 4); |
449092f6 CV |
396 | } |
397 | ||
398 | static void | |
399 | remote_fileio_to_fio_mode (mode_t num, fio_mode_t fnum) | |
400 | { | |
401 | remote_fileio_to_be (remote_fileio_mode_to_target(num), (char *) fnum, 4); | |
402 | } | |
403 | ||
404 | static void | |
405 | remote_fileio_to_fio_time (time_t num, fio_time_t fnum) | |
406 | { | |
cbcdb1f5 | 407 | remote_fileio_to_be ((LONGEST) num, (char *) fnum, 4); |
449092f6 CV |
408 | } |
409 | ||
410 | static void | |
cbcdb1f5 | 411 | remote_fileio_to_fio_long (LONGEST num, fio_long_t fnum) |
449092f6 CV |
412 | { |
413 | remote_fileio_to_be (num, (char *) fnum, 8); | |
414 | } | |
415 | ||
416 | static void | |
cbcdb1f5 | 417 | remote_fileio_to_fio_ulong (LONGEST num, fio_ulong_t fnum) |
449092f6 CV |
418 | { |
419 | remote_fileio_to_be (num, (char *) fnum, 8); | |
420 | } | |
421 | ||
422 | static void | |
423 | remote_fileio_to_fio_stat (struct stat *st, struct fio_stat *fst) | |
424 | { | |
d3ea6809 MM |
425 | LONGEST blksize; |
426 | ||
449092f6 CV |
427 | /* `st_dev' is set in the calling function */ |
428 | remote_fileio_to_fio_uint ((long) st->st_ino, fst->fst_ino); | |
429 | remote_fileio_to_fio_mode (st->st_mode, fst->fst_mode); | |
430 | remote_fileio_to_fio_uint ((long) st->st_nlink, fst->fst_nlink); | |
431 | remote_fileio_to_fio_uint ((long) st->st_uid, fst->fst_uid); | |
432 | remote_fileio_to_fio_uint ((long) st->st_gid, fst->fst_gid); | |
433 | remote_fileio_to_fio_uint ((long) st->st_rdev, fst->fst_rdev); | |
cbcdb1f5 | 434 | remote_fileio_to_fio_ulong ((LONGEST) st->st_size, fst->fst_size); |
d3ea6809 MM |
435 | #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE |
436 | blksize = st->st_blksize; | |
437 | #else | |
438 | blksize = 512; | |
439 | #endif | |
440 | remote_fileio_to_fio_ulong (blksize, fst->fst_blksize); | |
1dd727e9 | 441 | #if HAVE_STRUCT_STAT_ST_BLOCKS |
cbcdb1f5 | 442 | remote_fileio_to_fio_ulong ((LONGEST) st->st_blocks, fst->fst_blocks); |
1dd727e9 EZ |
443 | #else |
444 | /* FIXME: This is correct for DJGPP, but other systems that don't | |
445 | have st_blocks, if any, might prefer 512 instead of st_blksize. | |
446 | (eliz, 30-12-2003) */ | |
d3ea6809 MM |
447 | remote_fileio_to_fio_ulong (((LONGEST) st->st_size + blksize - 1) |
448 | / blksize, | |
1dd727e9 EZ |
449 | fst->fst_blocks); |
450 | #endif | |
449092f6 CV |
451 | remote_fileio_to_fio_time (st->st_atime, fst->fst_atime); |
452 | remote_fileio_to_fio_time (st->st_mtime, fst->fst_mtime); | |
453 | remote_fileio_to_fio_time (st->st_ctime, fst->fst_ctime); | |
454 | } | |
455 | ||
456 | static void | |
457 | remote_fileio_to_fio_timeval (struct timeval *tv, struct fio_timeval *ftv) | |
458 | { | |
459 | remote_fileio_to_fio_time (tv->tv_sec, ftv->ftv_sec); | |
460 | remote_fileio_to_fio_long (tv->tv_usec, ftv->ftv_usec); | |
461 | } | |
462 | ||
463 | static int remote_fio_ctrl_c_flag = 0; | |
464 | static int remote_fio_no_longjmp = 0; | |
449092f6 CV |
465 | |
466 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
467 | static struct sigaction remote_fio_sa; | |
468 | static struct sigaction remote_fio_osa; | |
469 | #else | |
470 | static void (*remote_fio_ofunc)(int); | |
471 | #endif | |
472 | ||
473 | static void | |
cbcdb1f5 | 474 | remote_fileio_sig_init (void) |
449092f6 CV |
475 | { |
476 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
477 | remote_fio_sa.sa_handler = SIG_IGN; | |
478 | sigemptyset (&remote_fio_sa.sa_mask); | |
479 | remote_fio_sa.sa_flags = 0; | |
480 | sigaction (SIGINT, &remote_fio_sa, &remote_fio_osa); | |
481 | #else | |
482 | remote_fio_ofunc = signal (SIGINT, SIG_IGN); | |
483 | #endif | |
484 | } | |
485 | ||
486 | static void | |
487 | remote_fileio_sig_set (void (*sigint_func)(int)) | |
488 | { | |
489 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
490 | remote_fio_sa.sa_handler = sigint_func; | |
491 | sigemptyset (&remote_fio_sa.sa_mask); | |
492 | remote_fio_sa.sa_flags = 0; | |
493 | sigaction (SIGINT, &remote_fio_sa, NULL); | |
494 | #else | |
495 | signal (SIGINT, sigint_func); | |
496 | #endif | |
497 | } | |
498 | ||
499 | static void | |
cbcdb1f5 | 500 | remote_fileio_sig_exit (void) |
449092f6 CV |
501 | { |
502 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
503 | sigaction (SIGINT, &remote_fio_osa, NULL); | |
504 | #else | |
505 | signal (SIGINT, remote_fio_ofunc); | |
506 | #endif | |
507 | } | |
508 | ||
b803fb0f DJ |
509 | static void |
510 | async_remote_fileio_interrupt (gdb_client_data arg) | |
511 | { | |
512 | deprecated_throw_reason (RETURN_QUIT); | |
513 | } | |
514 | ||
449092f6 CV |
515 | static void |
516 | remote_fileio_ctrl_c_signal_handler (int signo) | |
517 | { | |
518 | remote_fileio_sig_set (SIG_IGN); | |
519 | remote_fio_ctrl_c_flag = 1; | |
520 | if (!remote_fio_no_longjmp) | |
b803fb0f | 521 | gdb_call_async_signal_handler (sigint_fileio_token, 1); |
449092f6 CV |
522 | remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler); |
523 | } | |
524 | ||
525 | static void | |
526 | remote_fileio_reply (int retcode, int error) | |
527 | { | |
528 | char buf[32]; | |
529 | ||
530 | remote_fileio_sig_set (SIG_IGN); | |
531 | strcpy (buf, "F"); | |
532 | if (retcode < 0) | |
533 | { | |
534 | strcat (buf, "-"); | |
535 | retcode = -retcode; | |
536 | } | |
537 | sprintf (buf + strlen (buf), "%x", retcode); | |
538 | if (error || remote_fio_ctrl_c_flag) | |
539 | { | |
540 | if (error && remote_fio_ctrl_c_flag) | |
541 | error = FILEIO_EINTR; | |
542 | if (error < 0) | |
543 | { | |
544 | strcat (buf, "-"); | |
545 | error = -error; | |
546 | } | |
547 | sprintf (buf + strlen (buf), ",%x", error); | |
548 | if (remote_fio_ctrl_c_flag) | |
549 | strcat (buf, ",C"); | |
550 | } | |
551 | remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler); | |
552 | putpkt (buf); | |
553 | } | |
554 | ||
555 | static void | |
cbcdb1f5 | 556 | remote_fileio_ioerror (void) |
449092f6 CV |
557 | { |
558 | remote_fileio_reply (-1, FILEIO_EIO); | |
559 | } | |
560 | ||
561 | static void | |
cbcdb1f5 | 562 | remote_fileio_badfd (void) |
449092f6 CV |
563 | { |
564 | remote_fileio_reply (-1, FILEIO_EBADF); | |
565 | } | |
566 | ||
567 | static void | |
568 | remote_fileio_return_errno (int retcode) | |
569 | { | |
570 | remote_fileio_reply (retcode, | |
571 | retcode < 0 ? remote_fileio_errno_to_target (errno) : 0); | |
572 | } | |
573 | ||
574 | static void | |
575 | remote_fileio_return_success (int retcode) | |
576 | { | |
577 | remote_fileio_reply (retcode, 0); | |
578 | } | |
579 | ||
580 | /* Wrapper function for remote_write_bytes() which has the disadvantage to | |
581 | write only one packet, regardless of the requested number of bytes to | |
582 | transfer. This wrapper calls remote_write_bytes() as often as needed. */ | |
583 | static int | |
cfd77fa1 | 584 | remote_fileio_write_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
449092f6 CV |
585 | { |
586 | int ret = 0, written; | |
587 | ||
588 | while (len > 0 && (written = remote_write_bytes (memaddr, myaddr, len)) > 0) | |
589 | { | |
590 | len -= written; | |
591 | memaddr += written; | |
592 | myaddr += written; | |
593 | ret += written; | |
594 | } | |
595 | return ret; | |
596 | } | |
597 | ||
598 | static void | |
599 | remote_fileio_func_open (char *buf) | |
600 | { | |
601 | CORE_ADDR ptrval; | |
602 | int length, retlength; | |
603 | long num; | |
604 | int flags, fd; | |
605 | mode_t mode; | |
606 | char *pathname; | |
607 | struct stat st; | |
608 | ||
609 | /* 1. Parameter: Ptr to pathname / length incl. trailing zero */ | |
610 | if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length)) | |
611 | { | |
612 | remote_fileio_ioerror (); | |
613 | return; | |
614 | } | |
615 | /* 2. Parameter: open flags */ | |
616 | if (remote_fileio_extract_int (&buf, &num)) | |
617 | { | |
618 | remote_fileio_ioerror (); | |
619 | return; | |
620 | } | |
621 | flags = remote_fileio_oflags_to_host (num); | |
622 | /* 3. Parameter: open mode */ | |
623 | if (remote_fileio_extract_int (&buf, &num)) | |
624 | { | |
625 | remote_fileio_ioerror (); | |
626 | return; | |
627 | } | |
628 | mode = remote_fileio_mode_to_host (num, 1); | |
629 | ||
630 | /* Request pathname using 'm' packet */ | |
631 | pathname = alloca (length); | |
cfd77fa1 | 632 | retlength = remote_read_bytes (ptrval, (gdb_byte *) pathname, length); |
449092f6 CV |
633 | if (retlength != length) |
634 | { | |
635 | remote_fileio_ioerror (); | |
636 | return; | |
637 | } | |
638 | ||
639 | /* Check if pathname exists and is not a regular file or directory. If so, | |
640 | return an appropriate error code. Same for trying to open directories | |
641 | for writing. */ | |
642 | if (!stat (pathname, &st)) | |
643 | { | |
644 | if (!S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode)) | |
645 | { | |
646 | remote_fileio_reply (-1, FILEIO_ENODEV); | |
647 | return; | |
648 | } | |
649 | if (S_ISDIR (st.st_mode) | |
650 | && ((flags & O_WRONLY) == O_WRONLY || (flags & O_RDWR) == O_RDWR)) | |
651 | { | |
652 | remote_fileio_reply (-1, FILEIO_EISDIR); | |
653 | return; | |
654 | } | |
655 | } | |
656 | ||
657 | remote_fio_no_longjmp = 1; | |
658 | fd = open (pathname, flags, mode); | |
659 | if (fd < 0) | |
660 | { | |
661 | remote_fileio_return_errno (-1); | |
662 | return; | |
663 | } | |
664 | ||
665 | fd = remote_fileio_fd_to_targetfd (fd); | |
666 | remote_fileio_return_success (fd); | |
667 | } | |
668 | ||
669 | static void | |
670 | remote_fileio_func_close (char *buf) | |
671 | { | |
672 | long num; | |
673 | int fd; | |
674 | ||
675 | /* Parameter: file descriptor */ | |
676 | if (remote_fileio_extract_int (&buf, &num)) | |
677 | { | |
678 | remote_fileio_ioerror (); | |
679 | return; | |
680 | } | |
cbcdb1f5 CV |
681 | fd = remote_fileio_map_fd ((int) num); |
682 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
683 | { |
684 | remote_fileio_badfd (); | |
685 | return; | |
686 | } | |
687 | ||
688 | remote_fio_no_longjmp = 1; | |
689 | if (fd != FIO_FD_CONSOLE_IN && fd != FIO_FD_CONSOLE_OUT && close (fd)) | |
690 | remote_fileio_return_errno (-1); | |
691 | remote_fileio_close_target_fd ((int) num); | |
692 | remote_fileio_return_success (0); | |
693 | } | |
694 | ||
695 | static void | |
696 | remote_fileio_func_read (char *buf) | |
697 | { | |
698 | long target_fd, num; | |
cbcdb1f5 | 699 | LONGEST lnum; |
449092f6 CV |
700 | CORE_ADDR ptrval; |
701 | int fd, ret, retlength; | |
cfd77fa1 | 702 | gdb_byte *buffer; |
449092f6 CV |
703 | size_t length; |
704 | off_t old_offset, new_offset; | |
705 | ||
706 | /* 1. Parameter: file descriptor */ | |
707 | if (remote_fileio_extract_int (&buf, &target_fd)) | |
708 | { | |
709 | remote_fileio_ioerror (); | |
710 | return; | |
711 | } | |
cbcdb1f5 CV |
712 | fd = remote_fileio_map_fd ((int) target_fd); |
713 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
714 | { |
715 | remote_fileio_badfd (); | |
716 | return; | |
717 | } | |
718 | /* 2. Parameter: buffer pointer */ | |
719 | if (remote_fileio_extract_long (&buf, &lnum)) | |
720 | { | |
721 | remote_fileio_ioerror (); | |
722 | return; | |
723 | } | |
724 | ptrval = (CORE_ADDR) lnum; | |
725 | /* 3. Parameter: buffer length */ | |
726 | if (remote_fileio_extract_int (&buf, &num)) | |
727 | { | |
728 | remote_fileio_ioerror (); | |
729 | return; | |
730 | } | |
731 | length = (size_t) num; | |
732 | ||
733 | switch (fd) | |
734 | { | |
735 | case FIO_FD_CONSOLE_OUT: | |
736 | remote_fileio_badfd (); | |
737 | return; | |
738 | case FIO_FD_CONSOLE_IN: | |
739 | { | |
740 | static char *remaining_buf = NULL; | |
741 | static int remaining_length = 0; | |
742 | ||
cfd77fa1 | 743 | buffer = (gdb_byte *) xmalloc (32768); |
449092f6 CV |
744 | if (remaining_buf) |
745 | { | |
746 | remote_fio_no_longjmp = 1; | |
747 | if (remaining_length > length) | |
748 | { | |
749 | memcpy (buffer, remaining_buf, length); | |
750 | memmove (remaining_buf, remaining_buf + length, | |
751 | remaining_length - length); | |
752 | remaining_length -= length; | |
753 | ret = length; | |
754 | } | |
755 | else | |
756 | { | |
757 | memcpy (buffer, remaining_buf, remaining_length); | |
758 | xfree (remaining_buf); | |
759 | remaining_buf = NULL; | |
760 | ret = remaining_length; | |
761 | } | |
762 | } | |
763 | else | |
764 | { | |
cfd77fa1 | 765 | ret = ui_file_read (gdb_stdtargin, (char *) buffer, 32767); |
449092f6 CV |
766 | remote_fio_no_longjmp = 1; |
767 | if (ret > 0 && (size_t)ret > length) | |
768 | { | |
769 | remaining_buf = (char *) xmalloc (ret - length); | |
770 | remaining_length = ret - length; | |
771 | memcpy (remaining_buf, buffer + length, remaining_length); | |
772 | ret = length; | |
773 | } | |
774 | } | |
775 | } | |
776 | break; | |
777 | default: | |
cfd77fa1 | 778 | buffer = (gdb_byte *) xmalloc (length); |
449092f6 CV |
779 | /* POSIX defines EINTR behaviour of read in a weird way. It's allowed |
780 | for read() to return -1 even if "some" bytes have been read. It | |
781 | has been corrected in SUSv2 but that doesn't help us much... | |
782 | Therefore a complete solution must check how many bytes have been | |
783 | read on EINTR to return a more reliable value to the target */ | |
784 | old_offset = lseek (fd, 0, SEEK_CUR); | |
785 | remote_fio_no_longjmp = 1; | |
786 | ret = read (fd, buffer, length); | |
787 | if (ret < 0 && errno == EINTR) | |
788 | { | |
789 | new_offset = lseek (fd, 0, SEEK_CUR); | |
790 | /* If some data has been read, return the number of bytes read. | |
791 | The Ctrl-C flag is set in remote_fileio_reply() anyway */ | |
792 | if (old_offset != new_offset) | |
793 | ret = new_offset - old_offset; | |
794 | } | |
795 | break; | |
796 | } | |
797 | ||
798 | if (ret > 0) | |
799 | { | |
800 | retlength = remote_fileio_write_bytes (ptrval, buffer, ret); | |
801 | if (retlength != ret) | |
802 | ret = -1; /* errno has been set to EIO in remote_fileio_write_bytes() */ | |
803 | } | |
804 | ||
805 | if (ret < 0) | |
806 | remote_fileio_return_errno (-1); | |
807 | else | |
808 | remote_fileio_return_success (ret); | |
809 | ||
810 | xfree (buffer); | |
811 | } | |
812 | ||
813 | static void | |
814 | remote_fileio_func_write (char *buf) | |
815 | { | |
816 | long target_fd, num; | |
cbcdb1f5 | 817 | LONGEST lnum; |
449092f6 CV |
818 | CORE_ADDR ptrval; |
819 | int fd, ret, retlength; | |
cfd77fa1 | 820 | gdb_byte *buffer; |
449092f6 CV |
821 | size_t length; |
822 | ||
823 | /* 1. Parameter: file descriptor */ | |
824 | if (remote_fileio_extract_int (&buf, &target_fd)) | |
825 | { | |
826 | remote_fileio_ioerror (); | |
827 | return; | |
828 | } | |
cbcdb1f5 CV |
829 | fd = remote_fileio_map_fd ((int) target_fd); |
830 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
831 | { |
832 | remote_fileio_badfd (); | |
833 | return; | |
834 | } | |
835 | /* 2. Parameter: buffer pointer */ | |
836 | if (remote_fileio_extract_long (&buf, &lnum)) | |
837 | { | |
838 | remote_fileio_ioerror (); | |
839 | return; | |
840 | } | |
841 | ptrval = (CORE_ADDR) lnum; | |
842 | /* 3. Parameter: buffer length */ | |
843 | if (remote_fileio_extract_int (&buf, &num)) | |
844 | { | |
845 | remote_fileio_ioerror (); | |
846 | return; | |
847 | } | |
848 | length = (size_t) num; | |
849 | ||
cfd77fa1 | 850 | buffer = (gdb_byte *) xmalloc (length); |
449092f6 CV |
851 | retlength = remote_read_bytes (ptrval, buffer, length); |
852 | if (retlength != length) | |
853 | { | |
854 | xfree (buffer); | |
855 | remote_fileio_ioerror (); | |
856 | return; | |
857 | } | |
858 | ||
859 | remote_fio_no_longjmp = 1; | |
860 | switch (fd) | |
861 | { | |
862 | case FIO_FD_CONSOLE_IN: | |
863 | remote_fileio_badfd (); | |
1ed489bd | 864 | xfree (buffer); |
449092f6 CV |
865 | return; |
866 | case FIO_FD_CONSOLE_OUT: | |
cfd77fa1 DJ |
867 | ui_file_write (target_fd == 1 ? gdb_stdtarg : gdb_stdtargerr, |
868 | (char *) buffer, length); | |
449092f6 CV |
869 | gdb_flush (target_fd == 1 ? gdb_stdtarg : gdb_stdtargerr); |
870 | ret = length; | |
871 | break; | |
872 | default: | |
873 | ret = write (fd, buffer, length); | |
874 | if (ret < 0 && errno == EACCES) | |
875 | errno = EBADF; /* Cygwin returns EACCESS when writing to a R/O file.*/ | |
876 | break; | |
877 | } | |
878 | ||
879 | if (ret < 0) | |
880 | remote_fileio_return_errno (-1); | |
881 | else | |
882 | remote_fileio_return_success (ret); | |
883 | ||
884 | xfree (buffer); | |
885 | } | |
886 | ||
887 | static void | |
888 | remote_fileio_func_lseek (char *buf) | |
889 | { | |
890 | long num; | |
cbcdb1f5 | 891 | LONGEST lnum; |
449092f6 CV |
892 | int fd, flag; |
893 | off_t offset, ret; | |
894 | ||
895 | /* 1. Parameter: file descriptor */ | |
896 | if (remote_fileio_extract_int (&buf, &num)) | |
897 | { | |
898 | remote_fileio_ioerror (); | |
899 | return; | |
900 | } | |
cbcdb1f5 CV |
901 | fd = remote_fileio_map_fd ((int) num); |
902 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
903 | { |
904 | remote_fileio_badfd (); | |
905 | return; | |
906 | } | |
907 | else if (fd == FIO_FD_CONSOLE_IN || fd == FIO_FD_CONSOLE_OUT) | |
908 | { | |
909 | remote_fileio_reply (-1, FILEIO_ESPIPE); | |
910 | return; | |
911 | } | |
912 | ||
913 | /* 2. Parameter: offset */ | |
914 | if (remote_fileio_extract_long (&buf, &lnum)) | |
915 | { | |
916 | remote_fileio_ioerror (); | |
917 | return; | |
918 | } | |
919 | offset = (off_t) lnum; | |
920 | /* 3. Parameter: flag */ | |
921 | if (remote_fileio_extract_int (&buf, &num)) | |
922 | { | |
923 | remote_fileio_ioerror (); | |
924 | return; | |
925 | } | |
926 | if (remote_fileio_seek_flag_to_host (num, &flag)) | |
927 | { | |
928 | remote_fileio_reply (-1, FILEIO_EINVAL); | |
929 | return; | |
930 | } | |
931 | ||
932 | remote_fio_no_longjmp = 1; | |
933 | ret = lseek (fd, offset, flag); | |
934 | ||
935 | if (ret == (off_t) -1) | |
936 | remote_fileio_return_errno (-1); | |
937 | else | |
938 | remote_fileio_return_success (ret); | |
939 | } | |
940 | ||
941 | static void | |
942 | remote_fileio_func_rename (char *buf) | |
943 | { | |
86cc68a8 NS |
944 | CORE_ADDR old_ptr, new_ptr; |
945 | int old_len, new_len, retlength; | |
449092f6 CV |
946 | char *oldpath, *newpath; |
947 | int ret, of, nf; | |
948 | struct stat ost, nst; | |
949 | ||
950 | /* 1. Parameter: Ptr to oldpath / length incl. trailing zero */ | |
86cc68a8 | 951 | if (remote_fileio_extract_ptr_w_len (&buf, &old_ptr, &old_len)) |
449092f6 CV |
952 | { |
953 | remote_fileio_ioerror (); | |
954 | return; | |
955 | } | |
86cc68a8 NS |
956 | |
957 | /* 2. Parameter: Ptr to newpath / length incl. trailing zero */ | |
958 | if (remote_fileio_extract_ptr_w_len (&buf, &new_ptr, &new_len)) | |
449092f6 CV |
959 | { |
960 | remote_fileio_ioerror (); | |
961 | return; | |
962 | } | |
86cc68a8 NS |
963 | |
964 | /* Request oldpath using 'm' packet */ | |
965 | oldpath = alloca (old_len); | |
966 | retlength = remote_read_bytes (old_ptr, (gdb_byte *) oldpath, old_len); | |
967 | if (retlength != old_len) | |
449092f6 CV |
968 | { |
969 | remote_fileio_ioerror (); | |
970 | return; | |
971 | } | |
86cc68a8 | 972 | |
449092f6 | 973 | /* Request newpath using 'm' packet */ |
86cc68a8 NS |
974 | newpath = alloca (new_len); |
975 | retlength = remote_read_bytes (new_ptr, (gdb_byte *) newpath, new_len); | |
976 | if (retlength != new_len) | |
449092f6 CV |
977 | { |
978 | remote_fileio_ioerror (); | |
979 | return; | |
980 | } | |
981 | ||
982 | /* Only operate on regular files and directories */ | |
cbcdb1f5 CV |
983 | of = stat (oldpath, &ost); |
984 | nf = stat (newpath, &nst); | |
985 | if ((!of && !S_ISREG (ost.st_mode) && !S_ISDIR (ost.st_mode)) | |
986 | || (!nf && !S_ISREG (nst.st_mode) && !S_ISDIR (nst.st_mode))) | |
449092f6 CV |
987 | { |
988 | remote_fileio_reply (-1, FILEIO_EACCES); | |
989 | return; | |
990 | } | |
991 | ||
992 | remote_fio_no_longjmp = 1; | |
993 | ret = rename (oldpath, newpath); | |
994 | ||
995 | if (ret == -1) | |
996 | { | |
997 | /* Special case: newpath is a non-empty directory. Some systems | |
998 | return ENOTEMPTY, some return EEXIST. We coerce that to be | |
999 | always EEXIST. */ | |
1000 | if (errno == ENOTEMPTY) | |
1001 | errno = EEXIST; | |
1002 | #ifdef __CYGWIN__ | |
1003 | /* Workaround some Cygwin problems with correct errnos. */ | |
1004 | if (errno == EACCES) | |
1005 | { | |
1006 | if (!of && !nf && S_ISDIR (nst.st_mode)) | |
1007 | { | |
1008 | if (S_ISREG (ost.st_mode)) | |
1009 | errno = EISDIR; | |
1010 | else | |
1011 | { | |
1012 | char oldfullpath[PATH_MAX + 1]; | |
1013 | char newfullpath[PATH_MAX + 1]; | |
1014 | int len; | |
1015 | ||
1016 | cygwin_conv_to_full_posix_path (oldpath, oldfullpath); | |
1017 | cygwin_conv_to_full_posix_path (newpath, newfullpath); | |
1018 | len = strlen (oldfullpath); | |
1019 | if (newfullpath[len] == '/' | |
1020 | && !strncmp (oldfullpath, newfullpath, len)) | |
1021 | errno = EINVAL; | |
1022 | else | |
1023 | errno = EEXIST; | |
1024 | } | |
1025 | } | |
1026 | } | |
1027 | #endif | |
1028 | ||
1029 | remote_fileio_return_errno (-1); | |
1030 | } | |
1031 | else | |
1032 | remote_fileio_return_success (ret); | |
1033 | } | |
1034 | ||
1035 | static void | |
1036 | remote_fileio_func_unlink (char *buf) | |
1037 | { | |
1038 | CORE_ADDR ptrval; | |
1039 | int length, retlength; | |
1040 | char *pathname; | |
1041 | int ret; | |
1042 | struct stat st; | |
1043 | ||
1044 | /* Parameter: Ptr to pathname / length incl. trailing zero */ | |
1045 | if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length)) | |
1046 | { | |
1047 | remote_fileio_ioerror (); | |
1048 | return; | |
1049 | } | |
1050 | /* Request pathname using 'm' packet */ | |
1051 | pathname = alloca (length); | |
cfd77fa1 | 1052 | retlength = remote_read_bytes (ptrval, (gdb_byte *) pathname, length); |
449092f6 CV |
1053 | if (retlength != length) |
1054 | { | |
1055 | remote_fileio_ioerror (); | |
1056 | return; | |
1057 | } | |
1058 | ||
1059 | /* Only operate on regular files (and directories, which allows to return | |
1060 | the correct return code) */ | |
1061 | if (!stat (pathname, &st) && !S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode)) | |
1062 | { | |
1063 | remote_fileio_reply (-1, FILEIO_ENODEV); | |
1064 | return; | |
1065 | } | |
1066 | ||
1067 | remote_fio_no_longjmp = 1; | |
1068 | ret = unlink (pathname); | |
1069 | ||
1070 | if (ret == -1) | |
1071 | remote_fileio_return_errno (-1); | |
1072 | else | |
1073 | remote_fileio_return_success (ret); | |
1074 | } | |
1075 | ||
1076 | static void | |
1077 | remote_fileio_func_stat (char *buf) | |
1078 | { | |
86cc68a8 NS |
1079 | CORE_ADDR statptr, nameptr; |
1080 | int ret, namelength, retlength; | |
449092f6 | 1081 | char *pathname; |
cbcdb1f5 | 1082 | LONGEST lnum; |
449092f6 CV |
1083 | struct stat st; |
1084 | struct fio_stat fst; | |
1085 | ||
1086 | /* 1. Parameter: Ptr to pathname / length incl. trailing zero */ | |
86cc68a8 | 1087 | if (remote_fileio_extract_ptr_w_len (&buf, &nameptr, &namelength)) |
449092f6 CV |
1088 | { |
1089 | remote_fileio_ioerror (); | |
1090 | return; | |
1091 | } | |
86cc68a8 NS |
1092 | |
1093 | /* 2. Parameter: Ptr to struct stat */ | |
1094 | if (remote_fileio_extract_long (&buf, &lnum)) | |
449092f6 CV |
1095 | { |
1096 | remote_fileio_ioerror (); | |
1097 | return; | |
1098 | } | |
86cc68a8 NS |
1099 | statptr = (CORE_ADDR) lnum; |
1100 | ||
1101 | /* Request pathname using 'm' packet */ | |
1102 | pathname = alloca (namelength); | |
1103 | retlength = remote_read_bytes (nameptr, (gdb_byte *) pathname, namelength); | |
1104 | if (retlength != namelength) | |
449092f6 CV |
1105 | { |
1106 | remote_fileio_ioerror (); | |
1107 | return; | |
1108 | } | |
449092f6 CV |
1109 | |
1110 | remote_fio_no_longjmp = 1; | |
1111 | ret = stat (pathname, &st); | |
1112 | ||
1113 | if (ret == -1) | |
1114 | { | |
1115 | remote_fileio_return_errno (-1); | |
1116 | return; | |
1117 | } | |
1118 | /* Only operate on regular files and directories */ | |
1119 | if (!ret && !S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode)) | |
1120 | { | |
1121 | remote_fileio_reply (-1, FILEIO_EACCES); | |
1122 | return; | |
1123 | } | |
86cc68a8 | 1124 | if (statptr) |
449092f6 CV |
1125 | { |
1126 | remote_fileio_to_fio_stat (&st, &fst); | |
1127 | remote_fileio_to_fio_uint (0, fst.fst_dev); | |
1128 | ||
86cc68a8 NS |
1129 | retlength = remote_fileio_write_bytes (statptr, |
1130 | (gdb_byte *) &fst, sizeof fst); | |
449092f6 CV |
1131 | if (retlength != sizeof fst) |
1132 | { | |
1133 | remote_fileio_return_errno (-1); | |
1134 | return; | |
1135 | } | |
1136 | } | |
1137 | remote_fileio_return_success (ret); | |
1138 | } | |
1139 | ||
1140 | static void | |
1141 | remote_fileio_func_fstat (char *buf) | |
1142 | { | |
1143 | CORE_ADDR ptrval; | |
1144 | int fd, ret, retlength; | |
1145 | long target_fd; | |
cbcdb1f5 | 1146 | LONGEST lnum; |
449092f6 CV |
1147 | struct stat st; |
1148 | struct fio_stat fst; | |
1149 | struct timeval tv; | |
1150 | ||
1151 | /* 1. Parameter: file descriptor */ | |
1152 | if (remote_fileio_extract_int (&buf, &target_fd)) | |
1153 | { | |
1154 | remote_fileio_ioerror (); | |
1155 | return; | |
1156 | } | |
cbcdb1f5 CV |
1157 | fd = remote_fileio_map_fd ((int) target_fd); |
1158 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
1159 | { |
1160 | remote_fileio_badfd (); | |
1161 | return; | |
1162 | } | |
1163 | /* 2. Parameter: Ptr to struct stat */ | |
1164 | if (remote_fileio_extract_long (&buf, &lnum)) | |
1165 | { | |
1166 | remote_fileio_ioerror (); | |
1167 | return; | |
1168 | } | |
1169 | ptrval = (CORE_ADDR) lnum; | |
1170 | ||
1171 | remote_fio_no_longjmp = 1; | |
1172 | if (fd == FIO_FD_CONSOLE_IN || fd == FIO_FD_CONSOLE_OUT) | |
1173 | { | |
1174 | remote_fileio_to_fio_uint (1, fst.fst_dev); | |
1175 | st.st_mode = S_IFCHR | (fd == FIO_FD_CONSOLE_IN ? S_IRUSR : S_IWUSR); | |
1176 | st.st_nlink = 1; | |
d3ea6809 | 1177 | #ifdef HAVE_GETUID |
449092f6 | 1178 | st.st_uid = getuid (); |
d3ea6809 MM |
1179 | #else |
1180 | st.st_uid = 0; | |
1181 | #endif | |
1182 | #ifdef HAVE_GETGID | |
449092f6 | 1183 | st.st_gid = getgid (); |
d3ea6809 MM |
1184 | #else |
1185 | st.st_gid = 0; | |
1186 | #endif | |
449092f6 CV |
1187 | st.st_rdev = 0; |
1188 | st.st_size = 0; | |
d3ea6809 | 1189 | #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE |
449092f6 | 1190 | st.st_blksize = 512; |
d3ea6809 | 1191 | #endif |
1dd727e9 | 1192 | #if HAVE_STRUCT_STAT_ST_BLOCKS |
449092f6 | 1193 | st.st_blocks = 0; |
1dd727e9 | 1194 | #endif |
449092f6 CV |
1195 | if (!gettimeofday (&tv, NULL)) |
1196 | st.st_atime = st.st_mtime = st.st_ctime = tv.tv_sec; | |
1197 | else | |
1198 | st.st_atime = st.st_mtime = st.st_ctime = (time_t) 0; | |
1199 | ret = 0; | |
1200 | } | |
1201 | else | |
1202 | ret = fstat (fd, &st); | |
1203 | ||
1204 | if (ret == -1) | |
1205 | { | |
1206 | remote_fileio_return_errno (-1); | |
1207 | return; | |
1208 | } | |
1209 | if (ptrval) | |
1210 | { | |
1211 | remote_fileio_to_fio_stat (&st, &fst); | |
1212 | ||
cfd77fa1 | 1213 | retlength = remote_fileio_write_bytes (ptrval, (gdb_byte *) &fst, sizeof fst); |
449092f6 CV |
1214 | if (retlength != sizeof fst) |
1215 | { | |
1216 | remote_fileio_return_errno (-1); | |
1217 | return; | |
1218 | } | |
1219 | } | |
1220 | remote_fileio_return_success (ret); | |
1221 | } | |
1222 | ||
1223 | static void | |
1224 | remote_fileio_func_gettimeofday (char *buf) | |
1225 | { | |
cbcdb1f5 | 1226 | LONGEST lnum; |
449092f6 CV |
1227 | CORE_ADDR ptrval; |
1228 | int ret, retlength; | |
1229 | struct timeval tv; | |
1230 | struct fio_timeval ftv; | |
1231 | ||
1232 | /* 1. Parameter: struct timeval pointer */ | |
1233 | if (remote_fileio_extract_long (&buf, &lnum)) | |
1234 | { | |
1235 | remote_fileio_ioerror (); | |
1236 | return; | |
1237 | } | |
1238 | ptrval = (CORE_ADDR) lnum; | |
1239 | /* 2. Parameter: some pointer value... */ | |
1240 | if (remote_fileio_extract_long (&buf, &lnum)) | |
1241 | { | |
1242 | remote_fileio_ioerror (); | |
1243 | return; | |
1244 | } | |
1245 | /* ...which has to be NULL */ | |
1246 | if (lnum) | |
1247 | { | |
1248 | remote_fileio_reply (-1, FILEIO_EINVAL); | |
1249 | return; | |
1250 | } | |
1251 | ||
1252 | remote_fio_no_longjmp = 1; | |
1253 | ret = gettimeofday (&tv, NULL); | |
1254 | ||
1255 | if (ret == -1) | |
1256 | { | |
1257 | remote_fileio_return_errno (-1); | |
1258 | return; | |
1259 | } | |
1260 | ||
1261 | if (ptrval) | |
1262 | { | |
1263 | remote_fileio_to_fio_timeval (&tv, &ftv); | |
1264 | ||
cfd77fa1 | 1265 | retlength = remote_fileio_write_bytes (ptrval, (gdb_byte *) &ftv, sizeof ftv); |
449092f6 CV |
1266 | if (retlength != sizeof ftv) |
1267 | { | |
1268 | remote_fileio_return_errno (-1); | |
1269 | return; | |
1270 | } | |
1271 | } | |
1272 | remote_fileio_return_success (ret); | |
1273 | } | |
1274 | ||
1275 | static void | |
1276 | remote_fileio_func_isatty (char *buf) | |
1277 | { | |
1278 | long target_fd; | |
1279 | int fd; | |
1280 | ||
1281 | /* Parameter: file descriptor */ | |
1282 | if (remote_fileio_extract_int (&buf, &target_fd)) | |
1283 | { | |
1284 | remote_fileio_ioerror (); | |
1285 | return; | |
1286 | } | |
1287 | remote_fio_no_longjmp = 1; | |
1288 | fd = remote_fileio_map_fd ((int) target_fd); | |
1289 | remote_fileio_return_success (fd == FIO_FD_CONSOLE_IN || | |
1290 | fd == FIO_FD_CONSOLE_OUT ? 1 : 0); | |
1291 | } | |
1292 | ||
1293 | static void | |
1294 | remote_fileio_func_system (char *buf) | |
1295 | { | |
1296 | CORE_ADDR ptrval; | |
1297 | int ret, length, retlength; | |
5600ea19 | 1298 | char *cmdline = NULL; |
449092f6 CV |
1299 | |
1300 | /* Parameter: Ptr to commandline / length incl. trailing zero */ | |
1301 | if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length)) | |
1302 | { | |
1303 | remote_fileio_ioerror (); | |
1304 | return; | |
1305 | } | |
5600ea19 NS |
1306 | |
1307 | if (length) | |
449092f6 | 1308 | { |
5600ea19 NS |
1309 | /* Request commandline using 'm' packet */ |
1310 | cmdline = alloca (length); | |
1311 | retlength = remote_read_bytes (ptrval, (gdb_byte *) cmdline, length); | |
1312 | if (retlength != length) | |
1313 | { | |
1314 | remote_fileio_ioerror (); | |
1315 | return; | |
1316 | } | |
1317 | } | |
1318 | ||
1319 | /* Check if system(3) has been explicitely allowed using the | |
1320 | `set remote system-call-allowed 1' command. If length is 0, | |
1321 | indicating a NULL parameter to the system call, return zero to | |
1322 | indicate a shell is not available. Otherwise fail with EPERM. */ | |
1323 | if (!remote_fio_system_call_allowed) | |
1324 | { | |
1325 | if (!length) | |
1326 | remote_fileio_return_success (0); | |
1327 | else | |
1328 | remote_fileio_reply (-1, FILEIO_EPERM); | |
449092f6 CV |
1329 | return; |
1330 | } | |
1331 | ||
1332 | remote_fio_no_longjmp = 1; | |
1333 | ret = system (cmdline); | |
1334 | ||
5600ea19 NS |
1335 | if (!length) |
1336 | remote_fileio_return_success (ret); | |
1337 | else if (ret == -1) | |
449092f6 CV |
1338 | remote_fileio_return_errno (-1); |
1339 | else | |
1340 | remote_fileio_return_success (WEXITSTATUS (ret)); | |
1341 | } | |
1342 | ||
1343 | static struct { | |
1344 | char *name; | |
1345 | void (*func)(char *); | |
1346 | } remote_fio_func_map[] = { | |
d5d6fca5 DJ |
1347 | { "open", remote_fileio_func_open }, |
1348 | { "close", remote_fileio_func_close }, | |
1349 | { "read", remote_fileio_func_read }, | |
1350 | { "write", remote_fileio_func_write }, | |
1351 | { "lseek", remote_fileio_func_lseek }, | |
1352 | { "rename", remote_fileio_func_rename }, | |
1353 | { "unlink", remote_fileio_func_unlink }, | |
1354 | { "stat", remote_fileio_func_stat }, | |
1355 | { "fstat", remote_fileio_func_fstat }, | |
1356 | { "gettimeofday", remote_fileio_func_gettimeofday }, | |
1357 | { "isatty", remote_fileio_func_isatty }, | |
1358 | { "system", remote_fileio_func_system }, | |
1359 | { NULL, NULL } | |
449092f6 CV |
1360 | }; |
1361 | ||
1362 | static int | |
1363 | do_remote_fileio_request (struct ui_out *uiout, void *buf_arg) | |
1364 | { | |
1365 | char *buf = buf_arg; | |
1366 | char *c; | |
1367 | int idx; | |
1368 | ||
1369 | remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler); | |
1370 | ||
1371 | c = strchr (++buf, ','); | |
1372 | if (c) | |
1373 | *c++ = '\0'; | |
1374 | else | |
1375 | c = strchr (buf, '\0'); | |
1376 | for (idx = 0; remote_fio_func_map[idx].name; ++idx) | |
1377 | if (!strcmp (remote_fio_func_map[idx].name, buf)) | |
1378 | break; | |
1379 | if (!remote_fio_func_map[idx].name) /* ERROR: No such function. */ | |
1380 | return RETURN_ERROR; | |
1381 | remote_fio_func_map[idx].func (c); | |
1382 | return 0; | |
1383 | } | |
1384 | ||
ad9a8f3f NS |
1385 | /* Close any open descriptors, and reinitialize the file mapping. */ |
1386 | ||
1387 | void | |
1388 | remote_fileio_reset (void) | |
1389 | { | |
1390 | int ix; | |
1391 | ||
1392 | for (ix = 0; ix != remote_fio_data.fd_map_size; ix++) | |
1393 | { | |
1394 | int fd = remote_fio_data.fd_map[ix]; | |
1395 | ||
1396 | if (fd >= 0) | |
1397 | close (fd); | |
1398 | } | |
1399 | if (remote_fio_data.fd_map) | |
1400 | { | |
1401 | free (remote_fio_data.fd_map); | |
1402 | remote_fio_data.fd_map = NULL; | |
1403 | remote_fio_data.fd_map_size = 0; | |
1404 | } | |
1405 | } | |
1406 | ||
449092f6 CV |
1407 | void |
1408 | remote_fileio_request (char *buf) | |
1409 | { | |
1410 | int ex; | |
1411 | ||
1412 | remote_fileio_sig_init (); | |
1413 | ||
1414 | remote_fio_ctrl_c_flag = 0; | |
1415 | remote_fio_no_longjmp = 0; | |
1416 | ||
1417 | ex = catch_exceptions (uiout, do_remote_fileio_request, (void *)buf, | |
1c3c7ee7 | 1418 | RETURN_MASK_ALL); |
449092f6 CV |
1419 | switch (ex) |
1420 | { | |
1421 | case RETURN_ERROR: | |
1422 | remote_fileio_reply (-1, FILEIO_ENOSYS); | |
1423 | break; | |
1424 | case RETURN_QUIT: | |
1425 | remote_fileio_reply (-1, FILEIO_EINTR); | |
1426 | break; | |
1427 | default: | |
1428 | break; | |
1429 | } | |
1430 | ||
1431 | remote_fileio_sig_exit (); | |
1432 | } | |
1433 | ||
1434 | static void | |
1435 | set_system_call_allowed (char *args, int from_tty) | |
1436 | { | |
1437 | if (args) | |
1438 | { | |
1439 | char *arg_end; | |
1440 | int val = strtoul (args, &arg_end, 10); | |
1441 | if (*args && *arg_end == '\0') | |
1442 | { | |
1443 | remote_fio_system_call_allowed = !!val; | |
1444 | return; | |
1445 | } | |
1446 | } | |
8a3fe4f8 | 1447 | error (_("Illegal argument for \"set remote system-call-allowed\" command")); |
449092f6 CV |
1448 | } |
1449 | ||
1450 | static void | |
1451 | show_system_call_allowed (char *args, int from_tty) | |
1452 | { | |
1453 | if (args) | |
8a3fe4f8 | 1454 | error (_("Garbage after \"show remote system-call-allowed\" command: `%s'"), args); |
449092f6 CV |
1455 | printf_unfiltered ("Calling host system(3) call from target is %sallowed\n", |
1456 | remote_fio_system_call_allowed ? "" : "not "); | |
1457 | } | |
1458 | ||
1459 | void | |
1460 | initialize_remote_fileio (struct cmd_list_element *remote_set_cmdlist, | |
1461 | struct cmd_list_element *remote_show_cmdlist) | |
1462 | { | |
b803fb0f DJ |
1463 | sigint_fileio_token = |
1464 | create_async_signal_handler (async_remote_fileio_interrupt, NULL); | |
1465 | ||
449092f6 CV |
1466 | add_cmd ("system-call-allowed", no_class, |
1467 | set_system_call_allowed, | |
1a966eab | 1468 | _("Set if the host system(3) call is allowed for the target."), |
449092f6 CV |
1469 | &remote_set_cmdlist); |
1470 | add_cmd ("system-call-allowed", no_class, | |
1471 | show_system_call_allowed, | |
1a966eab | 1472 | _("Show if the host system(3) call is allowed for the target."), |
449092f6 CV |
1473 | &remote_show_cmdlist); |
1474 | } |