Commit | Line | Data |
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449092f6 CV |
1 | /* Remote File-I/O communications |
2 | ||
7b6bb8da | 3 | Copyright (C) 2003, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
0fb0cc75 | 4 | Free Software Foundation, Inc. |
449092f6 CV |
5 | |
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
449092f6 CV |
11 | (at your option) any later version. |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
449092f6 | 20 | |
0df8b418 | 21 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
449092f6 CV |
22 | |
23 | #include "defs.h" | |
24 | #include "gdb_string.h" | |
25 | #include "gdbcmd.h" | |
26 | #include "remote.h" | |
27 | #include "gdb/fileio.h" | |
0ef75e11 AC |
28 | #include "gdb_wait.h" |
29 | #include "gdb_stat.h" | |
60250e8b | 30 | #include "exceptions.h" |
cd90e54f | 31 | #include "remote-fileio.h" |
b803fb0f | 32 | #include "event-loop.h" |
f7605bc2 | 33 | #include "target.h" |
0ba1096a | 34 | #include "filenames.h" |
449092f6 | 35 | |
449092f6 CV |
36 | #include <fcntl.h> |
37 | #include <sys/time.h> | |
449092f6 | 38 | #ifdef __CYGWIN__ |
0ef75e11 | 39 | #include <sys/cygwin.h> /* For cygwin_conv_to_full_posix_path. */ |
7d8500b7 PM |
40 | #include <cygwin/version.h> |
41 | #if CYGWIN_VERSION_DLL_MAKE_COMBINED(CYGWIN_VERSION_API_MAJOR,CYGWIN_VERSION_API_MINOR) < 181 | |
42 | # define CCP_POSIX_TO_WIN_A 0 | |
43 | # define CCP_WIN_A_TO_POSIX 2 | |
44 | # define cygwin_conv_path(op, from, to, size) \ | |
45 | (op == CCP_WIN_A_TO_POSIX) ? \ | |
46 | cygwin_conv_to_full_posix_path (from, to) : \ | |
47 | cygwin_conv_to_win32_path (from, to) | |
48 | #endif | |
449092f6 | 49 | #endif |
449092f6 CV |
50 | #include <signal.h> |
51 | ||
52 | static struct { | |
53 | int *fd_map; | |
54 | int fd_map_size; | |
55 | } remote_fio_data; | |
56 | ||
57 | #define FIO_FD_INVALID -1 | |
58 | #define FIO_FD_CONSOLE_IN -2 | |
59 | #define FIO_FD_CONSOLE_OUT -3 | |
60 | ||
61 | static int remote_fio_system_call_allowed = 0; | |
62 | ||
b803fb0f DJ |
63 | static struct async_signal_handler *sigint_fileio_token; |
64 | ||
449092f6 | 65 | static int |
cbcdb1f5 | 66 | remote_fileio_init_fd_map (void) |
449092f6 CV |
67 | { |
68 | int i; | |
69 | ||
70 | if (!remote_fio_data.fd_map) | |
71 | { | |
72 | remote_fio_data.fd_map = (int *) xmalloc (10 * sizeof (int)); | |
73 | remote_fio_data.fd_map_size = 10; | |
74 | remote_fio_data.fd_map[0] = FIO_FD_CONSOLE_IN; | |
75 | remote_fio_data.fd_map[1] = FIO_FD_CONSOLE_OUT; | |
76 | remote_fio_data.fd_map[2] = FIO_FD_CONSOLE_OUT; | |
77 | for (i = 3; i < 10; ++i) | |
78 | remote_fio_data.fd_map[i] = FIO_FD_INVALID; | |
79 | } | |
80 | return 3; | |
81 | } | |
82 | ||
83 | static int | |
cbcdb1f5 | 84 | remote_fileio_resize_fd_map (void) |
449092f6 | 85 | { |
9f8e6999 MG |
86 | int i = remote_fio_data.fd_map_size; |
87 | ||
449092f6 CV |
88 | if (!remote_fio_data.fd_map) |
89 | return remote_fileio_init_fd_map (); | |
90 | remote_fio_data.fd_map_size += 10; | |
91 | remote_fio_data.fd_map = | |
92 | (int *) xrealloc (remote_fio_data.fd_map, | |
93 | remote_fio_data.fd_map_size * sizeof (int)); | |
9f8e6999 MG |
94 | for (; i < remote_fio_data.fd_map_size; i++) |
95 | remote_fio_data.fd_map[i] = FIO_FD_INVALID; | |
449092f6 CV |
96 | return remote_fio_data.fd_map_size - 10; |
97 | } | |
98 | ||
99 | static int | |
cbcdb1f5 | 100 | remote_fileio_next_free_fd (void) |
449092f6 CV |
101 | { |
102 | int i; | |
103 | ||
104 | for (i = 0; i < remote_fio_data.fd_map_size; ++i) | |
105 | if (remote_fio_data.fd_map[i] == FIO_FD_INVALID) | |
106 | return i; | |
107 | return remote_fileio_resize_fd_map (); | |
108 | } | |
109 | ||
110 | static int | |
111 | remote_fileio_fd_to_targetfd (int fd) | |
112 | { | |
113 | int target_fd = remote_fileio_next_free_fd (); | |
123f5f96 | 114 | |
449092f6 CV |
115 | remote_fio_data.fd_map[target_fd] = fd; |
116 | return target_fd; | |
117 | } | |
118 | ||
119 | static int | |
120 | remote_fileio_map_fd (int target_fd) | |
121 | { | |
122 | remote_fileio_init_fd_map (); | |
123 | if (target_fd < 0 || target_fd >= remote_fio_data.fd_map_size) | |
124 | return FIO_FD_INVALID; | |
125 | return remote_fio_data.fd_map[target_fd]; | |
126 | } | |
127 | ||
128 | static void | |
129 | remote_fileio_close_target_fd (int target_fd) | |
130 | { | |
131 | remote_fileio_init_fd_map (); | |
132 | if (target_fd >= 0 && target_fd < remote_fio_data.fd_map_size) | |
133 | remote_fio_data.fd_map[target_fd] = FIO_FD_INVALID; | |
134 | } | |
135 | ||
136 | static int | |
137 | remote_fileio_oflags_to_host (long flags) | |
138 | { | |
139 | int hflags = 0; | |
140 | ||
141 | if (flags & FILEIO_O_CREAT) | |
142 | hflags |= O_CREAT; | |
143 | if (flags & FILEIO_O_EXCL) | |
144 | hflags |= O_EXCL; | |
145 | if (flags & FILEIO_O_TRUNC) | |
146 | hflags |= O_TRUNC; | |
147 | if (flags & FILEIO_O_APPEND) | |
148 | hflags |= O_APPEND; | |
149 | if (flags & FILEIO_O_RDONLY) | |
150 | hflags |= O_RDONLY; | |
151 | if (flags & FILEIO_O_WRONLY) | |
152 | hflags |= O_WRONLY; | |
153 | if (flags & FILEIO_O_RDWR) | |
154 | hflags |= O_RDWR; | |
155 | /* On systems supporting binary and text mode, always open files in | |
0df8b418 | 156 | binary mode. */ |
449092f6 CV |
157 | #ifdef O_BINARY |
158 | hflags |= O_BINARY; | |
159 | #endif | |
160 | return hflags; | |
161 | } | |
162 | ||
163 | static mode_t | |
164 | remote_fileio_mode_to_host (long mode, int open_call) | |
165 | { | |
166 | mode_t hmode = 0; | |
167 | ||
168 | if (!open_call) | |
169 | { | |
170 | if (mode & FILEIO_S_IFREG) | |
171 | hmode |= S_IFREG; | |
172 | if (mode & FILEIO_S_IFDIR) | |
173 | hmode |= S_IFDIR; | |
174 | if (mode & FILEIO_S_IFCHR) | |
175 | hmode |= S_IFCHR; | |
176 | } | |
177 | if (mode & FILEIO_S_IRUSR) | |
178 | hmode |= S_IRUSR; | |
179 | if (mode & FILEIO_S_IWUSR) | |
180 | hmode |= S_IWUSR; | |
181 | if (mode & FILEIO_S_IXUSR) | |
182 | hmode |= S_IXUSR; | |
9b265ec2 | 183 | #ifdef S_IRGRP |
449092f6 CV |
184 | if (mode & FILEIO_S_IRGRP) |
185 | hmode |= S_IRGRP; | |
9b265ec2 MM |
186 | #endif |
187 | #ifdef S_IWGRP | |
449092f6 CV |
188 | if (mode & FILEIO_S_IWGRP) |
189 | hmode |= S_IWGRP; | |
9b265ec2 MM |
190 | #endif |
191 | #ifdef S_IXGRP | |
449092f6 CV |
192 | if (mode & FILEIO_S_IXGRP) |
193 | hmode |= S_IXGRP; | |
9b265ec2 | 194 | #endif |
449092f6 CV |
195 | if (mode & FILEIO_S_IROTH) |
196 | hmode |= S_IROTH; | |
9b265ec2 | 197 | #ifdef S_IWOTH |
449092f6 CV |
198 | if (mode & FILEIO_S_IWOTH) |
199 | hmode |= S_IWOTH; | |
9b265ec2 MM |
200 | #endif |
201 | #ifdef S_IXOTH | |
449092f6 CV |
202 | if (mode & FILEIO_S_IXOTH) |
203 | hmode |= S_IXOTH; | |
9b265ec2 | 204 | #endif |
449092f6 CV |
205 | return hmode; |
206 | } | |
207 | ||
cbcdb1f5 | 208 | static LONGEST |
449092f6 CV |
209 | remote_fileio_mode_to_target (mode_t mode) |
210 | { | |
211 | mode_t tmode = 0; | |
212 | ||
9c7deb13 | 213 | if (S_ISREG(mode)) |
449092f6 | 214 | tmode |= FILEIO_S_IFREG; |
9c7deb13 | 215 | if (S_ISDIR(mode)) |
449092f6 | 216 | tmode |= FILEIO_S_IFDIR; |
9c7deb13 | 217 | if (S_ISCHR(mode)) |
449092f6 CV |
218 | tmode |= FILEIO_S_IFCHR; |
219 | if (mode & S_IRUSR) | |
220 | tmode |= FILEIO_S_IRUSR; | |
221 | if (mode & S_IWUSR) | |
222 | tmode |= FILEIO_S_IWUSR; | |
223 | if (mode & S_IXUSR) | |
224 | tmode |= FILEIO_S_IXUSR; | |
9b265ec2 | 225 | #ifdef S_IRGRP |
449092f6 CV |
226 | if (mode & S_IRGRP) |
227 | tmode |= FILEIO_S_IRGRP; | |
9b265ec2 MM |
228 | #endif |
229 | #ifdef S_IWRGRP | |
449092f6 CV |
230 | if (mode & S_IWGRP) |
231 | tmode |= FILEIO_S_IWGRP; | |
9b265ec2 MM |
232 | #endif |
233 | #ifdef S_IXGRP | |
449092f6 CV |
234 | if (mode & S_IXGRP) |
235 | tmode |= FILEIO_S_IXGRP; | |
9b265ec2 | 236 | #endif |
449092f6 CV |
237 | if (mode & S_IROTH) |
238 | tmode |= FILEIO_S_IROTH; | |
9b265ec2 | 239 | #ifdef S_IWOTH |
449092f6 CV |
240 | if (mode & S_IWOTH) |
241 | tmode |= FILEIO_S_IWOTH; | |
9b265ec2 MM |
242 | #endif |
243 | #ifdef S_IXOTH | |
449092f6 CV |
244 | if (mode & S_IXOTH) |
245 | tmode |= FILEIO_S_IXOTH; | |
9b265ec2 | 246 | #endif |
449092f6 CV |
247 | return tmode; |
248 | } | |
249 | ||
250 | static int | |
251 | remote_fileio_errno_to_target (int error) | |
252 | { | |
253 | switch (error) | |
254 | { | |
255 | case EPERM: | |
256 | return FILEIO_EPERM; | |
257 | case ENOENT: | |
258 | return FILEIO_ENOENT; | |
259 | case EINTR: | |
260 | return FILEIO_EINTR; | |
261 | case EIO: | |
262 | return FILEIO_EIO; | |
263 | case EBADF: | |
264 | return FILEIO_EBADF; | |
265 | case EACCES: | |
266 | return FILEIO_EACCES; | |
267 | case EFAULT: | |
268 | return FILEIO_EFAULT; | |
269 | case EBUSY: | |
270 | return FILEIO_EBUSY; | |
271 | case EEXIST: | |
272 | return FILEIO_EEXIST; | |
273 | case ENODEV: | |
274 | return FILEIO_ENODEV; | |
275 | case ENOTDIR: | |
276 | return FILEIO_ENOTDIR; | |
277 | case EISDIR: | |
278 | return FILEIO_EISDIR; | |
279 | case EINVAL: | |
280 | return FILEIO_EINVAL; | |
281 | case ENFILE: | |
282 | return FILEIO_ENFILE; | |
283 | case EMFILE: | |
284 | return FILEIO_EMFILE; | |
285 | case EFBIG: | |
286 | return FILEIO_EFBIG; | |
287 | case ENOSPC: | |
288 | return FILEIO_ENOSPC; | |
289 | case ESPIPE: | |
290 | return FILEIO_ESPIPE; | |
291 | case EROFS: | |
292 | return FILEIO_EROFS; | |
293 | case ENOSYS: | |
294 | return FILEIO_ENOSYS; | |
295 | case ENAMETOOLONG: | |
296 | return FILEIO_ENAMETOOLONG; | |
297 | } | |
298 | return FILEIO_EUNKNOWN; | |
299 | } | |
300 | ||
301 | static int | |
302 | remote_fileio_seek_flag_to_host (long num, int *flag) | |
303 | { | |
304 | if (!flag) | |
305 | return 0; | |
306 | switch (num) | |
307 | { | |
308 | case FILEIO_SEEK_SET: | |
309 | *flag = SEEK_SET; | |
310 | break; | |
311 | case FILEIO_SEEK_CUR: | |
312 | *flag = SEEK_CUR; | |
313 | break; | |
314 | case FILEIO_SEEK_END: | |
315 | *flag = SEEK_END; | |
316 | break; | |
317 | default: | |
318 | return -1; | |
319 | } | |
320 | return 0; | |
321 | } | |
322 | ||
323 | static int | |
cbcdb1f5 | 324 | remote_fileio_extract_long (char **buf, LONGEST *retlong) |
449092f6 CV |
325 | { |
326 | char *c; | |
327 | int sign = 1; | |
328 | ||
329 | if (!buf || !*buf || !**buf || !retlong) | |
330 | return -1; | |
331 | c = strchr (*buf, ','); | |
332 | if (c) | |
333 | *c++ = '\0'; | |
334 | else | |
335 | c = strchr (*buf, '\0'); | |
336 | while (strchr ("+-", **buf)) | |
337 | { | |
338 | if (**buf == '-') | |
339 | sign = -sign; | |
340 | ++*buf; | |
341 | } | |
342 | for (*retlong = 0; **buf; ++*buf) | |
343 | { | |
344 | *retlong <<= 4; | |
345 | if (**buf >= '0' && **buf <= '9') | |
346 | *retlong += **buf - '0'; | |
347 | else if (**buf >= 'a' && **buf <= 'f') | |
348 | *retlong += **buf - 'a' + 10; | |
349 | else if (**buf >= 'A' && **buf <= 'F') | |
350 | *retlong += **buf - 'A' + 10; | |
351 | else | |
352 | return -1; | |
353 | } | |
354 | *retlong *= sign; | |
355 | *buf = c; | |
356 | return 0; | |
357 | } | |
358 | ||
359 | static int | |
360 | remote_fileio_extract_int (char **buf, long *retint) | |
361 | { | |
362 | int ret; | |
cbcdb1f5 | 363 | LONGEST retlong; |
449092f6 CV |
364 | |
365 | if (!retint) | |
366 | return -1; | |
cbcdb1f5 CV |
367 | ret = remote_fileio_extract_long (buf, &retlong); |
368 | if (!ret) | |
449092f6 CV |
369 | *retint = (long) retlong; |
370 | return ret; | |
371 | } | |
372 | ||
373 | static int | |
374 | remote_fileio_extract_ptr_w_len (char **buf, CORE_ADDR *ptrval, int *length) | |
375 | { | |
376 | char *c; | |
cbcdb1f5 | 377 | LONGEST retlong; |
449092f6 CV |
378 | |
379 | if (!buf || !*buf || !**buf || !ptrval || !length) | |
380 | return -1; | |
381 | c = strchr (*buf, '/'); | |
382 | if (!c) | |
383 | return -1; | |
384 | *c++ = '\0'; | |
385 | if (remote_fileio_extract_long (buf, &retlong)) | |
386 | return -1; | |
387 | *ptrval = (CORE_ADDR) retlong; | |
388 | *buf = c; | |
389 | if (remote_fileio_extract_long (buf, &retlong)) | |
390 | return -1; | |
391 | *length = (int) retlong; | |
392 | return 0; | |
393 | } | |
394 | ||
0df8b418 | 395 | /* Convert to big endian. */ |
449092f6 | 396 | static void |
cbcdb1f5 | 397 | remote_fileio_to_be (LONGEST num, char *buf, int bytes) |
449092f6 CV |
398 | { |
399 | int i; | |
400 | ||
401 | for (i = 0; i < bytes; ++i) | |
402 | buf[i] = (num >> (8 * (bytes - i - 1))) & 0xff; | |
403 | } | |
404 | ||
449092f6 CV |
405 | static void |
406 | remote_fileio_to_fio_uint (long num, fio_uint_t fnum) | |
407 | { | |
cbcdb1f5 | 408 | remote_fileio_to_be ((LONGEST) num, (char *) fnum, 4); |
449092f6 CV |
409 | } |
410 | ||
411 | static void | |
412 | remote_fileio_to_fio_mode (mode_t num, fio_mode_t fnum) | |
413 | { | |
414 | remote_fileio_to_be (remote_fileio_mode_to_target(num), (char *) fnum, 4); | |
415 | } | |
416 | ||
417 | static void | |
418 | remote_fileio_to_fio_time (time_t num, fio_time_t fnum) | |
419 | { | |
cbcdb1f5 | 420 | remote_fileio_to_be ((LONGEST) num, (char *) fnum, 4); |
449092f6 CV |
421 | } |
422 | ||
423 | static void | |
cbcdb1f5 | 424 | remote_fileio_to_fio_long (LONGEST num, fio_long_t fnum) |
449092f6 CV |
425 | { |
426 | remote_fileio_to_be (num, (char *) fnum, 8); | |
427 | } | |
428 | ||
429 | static void | |
cbcdb1f5 | 430 | remote_fileio_to_fio_ulong (LONGEST num, fio_ulong_t fnum) |
449092f6 CV |
431 | { |
432 | remote_fileio_to_be (num, (char *) fnum, 8); | |
433 | } | |
434 | ||
435 | static void | |
436 | remote_fileio_to_fio_stat (struct stat *st, struct fio_stat *fst) | |
437 | { | |
d3ea6809 MM |
438 | LONGEST blksize; |
439 | ||
0df8b418 | 440 | /* `st_dev' is set in the calling function. */ |
449092f6 CV |
441 | remote_fileio_to_fio_uint ((long) st->st_ino, fst->fst_ino); |
442 | remote_fileio_to_fio_mode (st->st_mode, fst->fst_mode); | |
443 | remote_fileio_to_fio_uint ((long) st->st_nlink, fst->fst_nlink); | |
444 | remote_fileio_to_fio_uint ((long) st->st_uid, fst->fst_uid); | |
445 | remote_fileio_to_fio_uint ((long) st->st_gid, fst->fst_gid); | |
446 | remote_fileio_to_fio_uint ((long) st->st_rdev, fst->fst_rdev); | |
cbcdb1f5 | 447 | remote_fileio_to_fio_ulong ((LONGEST) st->st_size, fst->fst_size); |
d3ea6809 MM |
448 | #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE |
449 | blksize = st->st_blksize; | |
450 | #else | |
451 | blksize = 512; | |
452 | #endif | |
453 | remote_fileio_to_fio_ulong (blksize, fst->fst_blksize); | |
1dd727e9 | 454 | #if HAVE_STRUCT_STAT_ST_BLOCKS |
cbcdb1f5 | 455 | remote_fileio_to_fio_ulong ((LONGEST) st->st_blocks, fst->fst_blocks); |
1dd727e9 EZ |
456 | #else |
457 | /* FIXME: This is correct for DJGPP, but other systems that don't | |
458 | have st_blocks, if any, might prefer 512 instead of st_blksize. | |
459 | (eliz, 30-12-2003) */ | |
d3ea6809 MM |
460 | remote_fileio_to_fio_ulong (((LONGEST) st->st_size + blksize - 1) |
461 | / blksize, | |
1dd727e9 EZ |
462 | fst->fst_blocks); |
463 | #endif | |
449092f6 CV |
464 | remote_fileio_to_fio_time (st->st_atime, fst->fst_atime); |
465 | remote_fileio_to_fio_time (st->st_mtime, fst->fst_mtime); | |
466 | remote_fileio_to_fio_time (st->st_ctime, fst->fst_ctime); | |
467 | } | |
468 | ||
469 | static void | |
470 | remote_fileio_to_fio_timeval (struct timeval *tv, struct fio_timeval *ftv) | |
471 | { | |
472 | remote_fileio_to_fio_time (tv->tv_sec, ftv->ftv_sec); | |
473 | remote_fileio_to_fio_long (tv->tv_usec, ftv->ftv_usec); | |
474 | } | |
475 | ||
476 | static int remote_fio_ctrl_c_flag = 0; | |
477 | static int remote_fio_no_longjmp = 0; | |
449092f6 CV |
478 | |
479 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
480 | static struct sigaction remote_fio_sa; | |
481 | static struct sigaction remote_fio_osa; | |
482 | #else | |
483 | static void (*remote_fio_ofunc)(int); | |
484 | #endif | |
485 | ||
486 | static void | |
cbcdb1f5 | 487 | remote_fileio_sig_init (void) |
449092f6 CV |
488 | { |
489 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
490 | remote_fio_sa.sa_handler = SIG_IGN; | |
491 | sigemptyset (&remote_fio_sa.sa_mask); | |
492 | remote_fio_sa.sa_flags = 0; | |
493 | sigaction (SIGINT, &remote_fio_sa, &remote_fio_osa); | |
494 | #else | |
495 | remote_fio_ofunc = signal (SIGINT, SIG_IGN); | |
496 | #endif | |
497 | } | |
498 | ||
499 | static void | |
500 | remote_fileio_sig_set (void (*sigint_func)(int)) | |
501 | { | |
502 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
503 | remote_fio_sa.sa_handler = sigint_func; | |
504 | sigemptyset (&remote_fio_sa.sa_mask); | |
505 | remote_fio_sa.sa_flags = 0; | |
506 | sigaction (SIGINT, &remote_fio_sa, NULL); | |
507 | #else | |
508 | signal (SIGINT, sigint_func); | |
509 | #endif | |
510 | } | |
511 | ||
512 | static void | |
cbcdb1f5 | 513 | remote_fileio_sig_exit (void) |
449092f6 CV |
514 | { |
515 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
516 | sigaction (SIGINT, &remote_fio_osa, NULL); | |
517 | #else | |
518 | signal (SIGINT, remote_fio_ofunc); | |
519 | #endif | |
520 | } | |
521 | ||
b803fb0f DJ |
522 | static void |
523 | async_remote_fileio_interrupt (gdb_client_data arg) | |
524 | { | |
525 | deprecated_throw_reason (RETURN_QUIT); | |
526 | } | |
527 | ||
449092f6 CV |
528 | static void |
529 | remote_fileio_ctrl_c_signal_handler (int signo) | |
530 | { | |
531 | remote_fileio_sig_set (SIG_IGN); | |
532 | remote_fio_ctrl_c_flag = 1; | |
533 | if (!remote_fio_no_longjmp) | |
b803fb0f | 534 | gdb_call_async_signal_handler (sigint_fileio_token, 1); |
449092f6 CV |
535 | remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler); |
536 | } | |
537 | ||
538 | static void | |
539 | remote_fileio_reply (int retcode, int error) | |
540 | { | |
541 | char buf[32]; | |
542 | ||
543 | remote_fileio_sig_set (SIG_IGN); | |
544 | strcpy (buf, "F"); | |
545 | if (retcode < 0) | |
546 | { | |
547 | strcat (buf, "-"); | |
548 | retcode = -retcode; | |
549 | } | |
550 | sprintf (buf + strlen (buf), "%x", retcode); | |
551 | if (error || remote_fio_ctrl_c_flag) | |
552 | { | |
553 | if (error && remote_fio_ctrl_c_flag) | |
554 | error = FILEIO_EINTR; | |
555 | if (error < 0) | |
556 | { | |
557 | strcat (buf, "-"); | |
558 | error = -error; | |
559 | } | |
560 | sprintf (buf + strlen (buf), ",%x", error); | |
561 | if (remote_fio_ctrl_c_flag) | |
562 | strcat (buf, ",C"); | |
563 | } | |
564 | remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler); | |
565 | putpkt (buf); | |
566 | } | |
567 | ||
568 | static void | |
cbcdb1f5 | 569 | remote_fileio_ioerror (void) |
449092f6 CV |
570 | { |
571 | remote_fileio_reply (-1, FILEIO_EIO); | |
572 | } | |
573 | ||
574 | static void | |
cbcdb1f5 | 575 | remote_fileio_badfd (void) |
449092f6 CV |
576 | { |
577 | remote_fileio_reply (-1, FILEIO_EBADF); | |
578 | } | |
579 | ||
580 | static void | |
581 | remote_fileio_return_errno (int retcode) | |
582 | { | |
3e43a32a MS |
583 | remote_fileio_reply (retcode, retcode < 0 |
584 | ? remote_fileio_errno_to_target (errno) : 0); | |
449092f6 CV |
585 | } |
586 | ||
587 | static void | |
588 | remote_fileio_return_success (int retcode) | |
589 | { | |
590 | remote_fileio_reply (retcode, 0); | |
591 | } | |
592 | ||
449092f6 CV |
593 | static void |
594 | remote_fileio_func_open (char *buf) | |
595 | { | |
596 | CORE_ADDR ptrval; | |
f7605bc2 | 597 | int length; |
449092f6 CV |
598 | long num; |
599 | int flags, fd; | |
600 | mode_t mode; | |
601 | char *pathname; | |
602 | struct stat st; | |
603 | ||
0df8b418 | 604 | /* 1. Parameter: Ptr to pathname / length incl. trailing zero. */ |
449092f6 CV |
605 | if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length)) |
606 | { | |
607 | remote_fileio_ioerror (); | |
608 | return; | |
609 | } | |
610 | /* 2. Parameter: open flags */ | |
611 | if (remote_fileio_extract_int (&buf, &num)) | |
612 | { | |
613 | remote_fileio_ioerror (); | |
614 | return; | |
615 | } | |
616 | flags = remote_fileio_oflags_to_host (num); | |
617 | /* 3. Parameter: open mode */ | |
618 | if (remote_fileio_extract_int (&buf, &num)) | |
619 | { | |
620 | remote_fileio_ioerror (); | |
621 | return; | |
622 | } | |
623 | mode = remote_fileio_mode_to_host (num, 1); | |
624 | ||
f7605bc2 | 625 | /* Request pathname. */ |
449092f6 | 626 | pathname = alloca (length); |
f7605bc2 | 627 | if (target_read_memory (ptrval, (gdb_byte *) pathname, length) != 0) |
449092f6 CV |
628 | { |
629 | remote_fileio_ioerror (); | |
630 | return; | |
631 | } | |
632 | ||
633 | /* Check if pathname exists and is not a regular file or directory. If so, | |
634 | return an appropriate error code. Same for trying to open directories | |
0df8b418 | 635 | for writing. */ |
449092f6 CV |
636 | if (!stat (pathname, &st)) |
637 | { | |
638 | if (!S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode)) | |
639 | { | |
640 | remote_fileio_reply (-1, FILEIO_ENODEV); | |
641 | return; | |
642 | } | |
643 | if (S_ISDIR (st.st_mode) | |
644 | && ((flags & O_WRONLY) == O_WRONLY || (flags & O_RDWR) == O_RDWR)) | |
645 | { | |
646 | remote_fileio_reply (-1, FILEIO_EISDIR); | |
647 | return; | |
648 | } | |
649 | } | |
650 | ||
651 | remote_fio_no_longjmp = 1; | |
652 | fd = open (pathname, flags, mode); | |
653 | if (fd < 0) | |
654 | { | |
655 | remote_fileio_return_errno (-1); | |
656 | return; | |
657 | } | |
658 | ||
659 | fd = remote_fileio_fd_to_targetfd (fd); | |
660 | remote_fileio_return_success (fd); | |
661 | } | |
662 | ||
663 | static void | |
664 | remote_fileio_func_close (char *buf) | |
665 | { | |
666 | long num; | |
667 | int fd; | |
668 | ||
669 | /* Parameter: file descriptor */ | |
670 | if (remote_fileio_extract_int (&buf, &num)) | |
671 | { | |
672 | remote_fileio_ioerror (); | |
673 | return; | |
674 | } | |
cbcdb1f5 CV |
675 | fd = remote_fileio_map_fd ((int) num); |
676 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
677 | { |
678 | remote_fileio_badfd (); | |
679 | return; | |
680 | } | |
681 | ||
682 | remote_fio_no_longjmp = 1; | |
683 | if (fd != FIO_FD_CONSOLE_IN && fd != FIO_FD_CONSOLE_OUT && close (fd)) | |
684 | remote_fileio_return_errno (-1); | |
685 | remote_fileio_close_target_fd ((int) num); | |
686 | remote_fileio_return_success (0); | |
687 | } | |
688 | ||
689 | static void | |
690 | remote_fileio_func_read (char *buf) | |
691 | { | |
692 | long target_fd, num; | |
cbcdb1f5 | 693 | LONGEST lnum; |
449092f6 CV |
694 | CORE_ADDR ptrval; |
695 | int fd, ret, retlength; | |
cfd77fa1 | 696 | gdb_byte *buffer; |
449092f6 CV |
697 | size_t length; |
698 | off_t old_offset, new_offset; | |
699 | ||
700 | /* 1. Parameter: file descriptor */ | |
701 | if (remote_fileio_extract_int (&buf, &target_fd)) | |
702 | { | |
703 | remote_fileio_ioerror (); | |
704 | return; | |
705 | } | |
cbcdb1f5 CV |
706 | fd = remote_fileio_map_fd ((int) target_fd); |
707 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
708 | { |
709 | remote_fileio_badfd (); | |
710 | return; | |
711 | } | |
712 | /* 2. Parameter: buffer pointer */ | |
713 | if (remote_fileio_extract_long (&buf, &lnum)) | |
714 | { | |
715 | remote_fileio_ioerror (); | |
716 | return; | |
717 | } | |
718 | ptrval = (CORE_ADDR) lnum; | |
719 | /* 3. Parameter: buffer length */ | |
720 | if (remote_fileio_extract_int (&buf, &num)) | |
721 | { | |
722 | remote_fileio_ioerror (); | |
723 | return; | |
724 | } | |
725 | length = (size_t) num; | |
726 | ||
727 | switch (fd) | |
728 | { | |
729 | case FIO_FD_CONSOLE_OUT: | |
730 | remote_fileio_badfd (); | |
731 | return; | |
732 | case FIO_FD_CONSOLE_IN: | |
733 | { | |
734 | static char *remaining_buf = NULL; | |
735 | static int remaining_length = 0; | |
736 | ||
b86ab4ff | 737 | buffer = (gdb_byte *) xmalloc (16384); |
449092f6 CV |
738 | if (remaining_buf) |
739 | { | |
740 | remote_fio_no_longjmp = 1; | |
741 | if (remaining_length > length) | |
742 | { | |
743 | memcpy (buffer, remaining_buf, length); | |
744 | memmove (remaining_buf, remaining_buf + length, | |
745 | remaining_length - length); | |
746 | remaining_length -= length; | |
747 | ret = length; | |
748 | } | |
749 | else | |
750 | { | |
751 | memcpy (buffer, remaining_buf, remaining_length); | |
752 | xfree (remaining_buf); | |
753 | remaining_buf = NULL; | |
754 | ret = remaining_length; | |
755 | } | |
756 | } | |
757 | else | |
758 | { | |
b86ab4ff DJ |
759 | /* Windows (at least XP and Server 2003) has difficulty |
760 | with large reads from consoles. If a handle is | |
761 | backed by a real console device, overly large reads | |
762 | from the handle will fail and set errno == ENOMEM. | |
763 | On a Windows Server 2003 system where I tested, | |
764 | reading 26608 bytes from the console was OK, but | |
765 | anything above 26609 bytes would fail. The limit has | |
766 | been observed to vary on different systems. So, we | |
767 | limit this read to something smaller than that - by a | |
768 | safe margin, in case the limit depends on system | |
769 | resources or version. */ | |
770 | ret = ui_file_read (gdb_stdtargin, (char *) buffer, 16383); | |
449092f6 CV |
771 | remote_fio_no_longjmp = 1; |
772 | if (ret > 0 && (size_t)ret > length) | |
773 | { | |
774 | remaining_buf = (char *) xmalloc (ret - length); | |
775 | remaining_length = ret - length; | |
776 | memcpy (remaining_buf, buffer + length, remaining_length); | |
777 | ret = length; | |
778 | } | |
779 | } | |
780 | } | |
781 | break; | |
782 | default: | |
cfd77fa1 | 783 | buffer = (gdb_byte *) xmalloc (length); |
449092f6 CV |
784 | /* POSIX defines EINTR behaviour of read in a weird way. It's allowed |
785 | for read() to return -1 even if "some" bytes have been read. It | |
786 | has been corrected in SUSv2 but that doesn't help us much... | |
787 | Therefore a complete solution must check how many bytes have been | |
788 | read on EINTR to return a more reliable value to the target */ | |
789 | old_offset = lseek (fd, 0, SEEK_CUR); | |
790 | remote_fio_no_longjmp = 1; | |
791 | ret = read (fd, buffer, length); | |
792 | if (ret < 0 && errno == EINTR) | |
793 | { | |
794 | new_offset = lseek (fd, 0, SEEK_CUR); | |
795 | /* If some data has been read, return the number of bytes read. | |
0df8b418 | 796 | The Ctrl-C flag is set in remote_fileio_reply() anyway. */ |
449092f6 CV |
797 | if (old_offset != new_offset) |
798 | ret = new_offset - old_offset; | |
799 | } | |
800 | break; | |
801 | } | |
802 | ||
803 | if (ret > 0) | |
804 | { | |
f7605bc2 PA |
805 | errno = target_write_memory (ptrval, buffer, ret); |
806 | if (errno != 0) | |
807 | ret = -1; | |
449092f6 CV |
808 | } |
809 | ||
810 | if (ret < 0) | |
811 | remote_fileio_return_errno (-1); | |
812 | else | |
813 | remote_fileio_return_success (ret); | |
814 | ||
815 | xfree (buffer); | |
816 | } | |
817 | ||
818 | static void | |
819 | remote_fileio_func_write (char *buf) | |
820 | { | |
821 | long target_fd, num; | |
cbcdb1f5 | 822 | LONGEST lnum; |
449092f6 | 823 | CORE_ADDR ptrval; |
f7605bc2 | 824 | int fd, ret; |
cfd77fa1 | 825 | gdb_byte *buffer; |
449092f6 CV |
826 | size_t length; |
827 | ||
828 | /* 1. Parameter: file descriptor */ | |
829 | if (remote_fileio_extract_int (&buf, &target_fd)) | |
830 | { | |
831 | remote_fileio_ioerror (); | |
832 | return; | |
833 | } | |
cbcdb1f5 CV |
834 | fd = remote_fileio_map_fd ((int) target_fd); |
835 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
836 | { |
837 | remote_fileio_badfd (); | |
838 | return; | |
839 | } | |
840 | /* 2. Parameter: buffer pointer */ | |
841 | if (remote_fileio_extract_long (&buf, &lnum)) | |
842 | { | |
843 | remote_fileio_ioerror (); | |
844 | return; | |
845 | } | |
846 | ptrval = (CORE_ADDR) lnum; | |
847 | /* 3. Parameter: buffer length */ | |
848 | if (remote_fileio_extract_int (&buf, &num)) | |
849 | { | |
850 | remote_fileio_ioerror (); | |
851 | return; | |
852 | } | |
853 | length = (size_t) num; | |
854 | ||
cfd77fa1 | 855 | buffer = (gdb_byte *) xmalloc (length); |
f7605bc2 | 856 | if (target_read_memory (ptrval, buffer, length) != 0) |
449092f6 CV |
857 | { |
858 | xfree (buffer); | |
859 | remote_fileio_ioerror (); | |
860 | return; | |
861 | } | |
862 | ||
863 | remote_fio_no_longjmp = 1; | |
864 | switch (fd) | |
865 | { | |
866 | case FIO_FD_CONSOLE_IN: | |
867 | remote_fileio_badfd (); | |
1ed489bd | 868 | xfree (buffer); |
449092f6 CV |
869 | return; |
870 | case FIO_FD_CONSOLE_OUT: | |
cfd77fa1 DJ |
871 | ui_file_write (target_fd == 1 ? gdb_stdtarg : gdb_stdtargerr, |
872 | (char *) buffer, length); | |
449092f6 CV |
873 | gdb_flush (target_fd == 1 ? gdb_stdtarg : gdb_stdtargerr); |
874 | ret = length; | |
875 | break; | |
876 | default: | |
877 | ret = write (fd, buffer, length); | |
878 | if (ret < 0 && errno == EACCES) | |
3e43a32a | 879 | errno = EBADF; /* Cygwin returns EACCESS when writing to a |
0df8b418 | 880 | R/O file. */ |
449092f6 CV |
881 | break; |
882 | } | |
883 | ||
884 | if (ret < 0) | |
885 | remote_fileio_return_errno (-1); | |
886 | else | |
887 | remote_fileio_return_success (ret); | |
888 | ||
889 | xfree (buffer); | |
890 | } | |
891 | ||
892 | static void | |
893 | remote_fileio_func_lseek (char *buf) | |
894 | { | |
895 | long num; | |
cbcdb1f5 | 896 | LONGEST lnum; |
449092f6 CV |
897 | int fd, flag; |
898 | off_t offset, ret; | |
899 | ||
900 | /* 1. Parameter: file descriptor */ | |
901 | if (remote_fileio_extract_int (&buf, &num)) | |
902 | { | |
903 | remote_fileio_ioerror (); | |
904 | return; | |
905 | } | |
cbcdb1f5 CV |
906 | fd = remote_fileio_map_fd ((int) num); |
907 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
908 | { |
909 | remote_fileio_badfd (); | |
910 | return; | |
911 | } | |
912 | else if (fd == FIO_FD_CONSOLE_IN || fd == FIO_FD_CONSOLE_OUT) | |
913 | { | |
914 | remote_fileio_reply (-1, FILEIO_ESPIPE); | |
915 | return; | |
916 | } | |
917 | ||
918 | /* 2. Parameter: offset */ | |
919 | if (remote_fileio_extract_long (&buf, &lnum)) | |
920 | { | |
921 | remote_fileio_ioerror (); | |
922 | return; | |
923 | } | |
924 | offset = (off_t) lnum; | |
925 | /* 3. Parameter: flag */ | |
926 | if (remote_fileio_extract_int (&buf, &num)) | |
927 | { | |
928 | remote_fileio_ioerror (); | |
929 | return; | |
930 | } | |
931 | if (remote_fileio_seek_flag_to_host (num, &flag)) | |
932 | { | |
933 | remote_fileio_reply (-1, FILEIO_EINVAL); | |
934 | return; | |
935 | } | |
936 | ||
937 | remote_fio_no_longjmp = 1; | |
938 | ret = lseek (fd, offset, flag); | |
939 | ||
940 | if (ret == (off_t) -1) | |
941 | remote_fileio_return_errno (-1); | |
942 | else | |
943 | remote_fileio_return_success (ret); | |
944 | } | |
945 | ||
946 | static void | |
947 | remote_fileio_func_rename (char *buf) | |
948 | { | |
86cc68a8 | 949 | CORE_ADDR old_ptr, new_ptr; |
f7605bc2 | 950 | int old_len, new_len; |
449092f6 CV |
951 | char *oldpath, *newpath; |
952 | int ret, of, nf; | |
953 | struct stat ost, nst; | |
954 | ||
955 | /* 1. Parameter: Ptr to oldpath / length incl. trailing zero */ | |
86cc68a8 | 956 | if (remote_fileio_extract_ptr_w_len (&buf, &old_ptr, &old_len)) |
449092f6 CV |
957 | { |
958 | remote_fileio_ioerror (); | |
959 | return; | |
960 | } | |
86cc68a8 NS |
961 | |
962 | /* 2. Parameter: Ptr to newpath / length incl. trailing zero */ | |
963 | if (remote_fileio_extract_ptr_w_len (&buf, &new_ptr, &new_len)) | |
449092f6 CV |
964 | { |
965 | remote_fileio_ioerror (); | |
966 | return; | |
967 | } | |
86cc68a8 NS |
968 | |
969 | /* Request oldpath using 'm' packet */ | |
970 | oldpath = alloca (old_len); | |
f7605bc2 | 971 | if (target_read_memory (old_ptr, (gdb_byte *) oldpath, old_len) != 0) |
449092f6 CV |
972 | { |
973 | remote_fileio_ioerror (); | |
974 | return; | |
975 | } | |
86cc68a8 | 976 | |
449092f6 | 977 | /* Request newpath using 'm' packet */ |
86cc68a8 | 978 | newpath = alloca (new_len); |
f7605bc2 | 979 | if (target_read_memory (new_ptr, (gdb_byte *) newpath, new_len) != 0) |
449092f6 CV |
980 | { |
981 | remote_fileio_ioerror (); | |
982 | return; | |
983 | } | |
984 | ||
0df8b418 | 985 | /* Only operate on regular files and directories. */ |
cbcdb1f5 CV |
986 | of = stat (oldpath, &ost); |
987 | nf = stat (newpath, &nst); | |
988 | if ((!of && !S_ISREG (ost.st_mode) && !S_ISDIR (ost.st_mode)) | |
989 | || (!nf && !S_ISREG (nst.st_mode) && !S_ISDIR (nst.st_mode))) | |
449092f6 CV |
990 | { |
991 | remote_fileio_reply (-1, FILEIO_EACCES); | |
992 | return; | |
993 | } | |
994 | ||
995 | remote_fio_no_longjmp = 1; | |
996 | ret = rename (oldpath, newpath); | |
997 | ||
998 | if (ret == -1) | |
999 | { | |
1000 | /* Special case: newpath is a non-empty directory. Some systems | |
1001 | return ENOTEMPTY, some return EEXIST. We coerce that to be | |
0df8b418 | 1002 | always EEXIST. */ |
449092f6 CV |
1003 | if (errno == ENOTEMPTY) |
1004 | errno = EEXIST; | |
1005 | #ifdef __CYGWIN__ | |
0df8b418 | 1006 | /* Workaround some Cygwin problems with correct errnos. */ |
449092f6 CV |
1007 | if (errno == EACCES) |
1008 | { | |
1009 | if (!of && !nf && S_ISDIR (nst.st_mode)) | |
1010 | { | |
1011 | if (S_ISREG (ost.st_mode)) | |
1012 | errno = EISDIR; | |
1013 | else | |
1014 | { | |
d0d0ab16 CV |
1015 | char oldfullpath[PATH_MAX]; |
1016 | char newfullpath[PATH_MAX]; | |
449092f6 CV |
1017 | int len; |
1018 | ||
d0d0ab16 CV |
1019 | cygwin_conv_path (CCP_WIN_A_TO_POSIX, oldpath, oldfullpath, |
1020 | PATH_MAX); | |
1021 | cygwin_conv_path (CCP_WIN_A_TO_POSIX, newpath, newfullpath, | |
1022 | PATH_MAX); | |
449092f6 | 1023 | len = strlen (oldfullpath); |
0ba1096a KT |
1024 | if (IS_DIR_SEPARATOR (newfullpath[len]) |
1025 | && !filename_ncmp (oldfullpath, newfullpath, len)) | |
449092f6 CV |
1026 | errno = EINVAL; |
1027 | else | |
1028 | errno = EEXIST; | |
1029 | } | |
1030 | } | |
1031 | } | |
1032 | #endif | |
1033 | ||
1034 | remote_fileio_return_errno (-1); | |
1035 | } | |
1036 | else | |
1037 | remote_fileio_return_success (ret); | |
1038 | } | |
1039 | ||
1040 | static void | |
1041 | remote_fileio_func_unlink (char *buf) | |
1042 | { | |
1043 | CORE_ADDR ptrval; | |
f7605bc2 | 1044 | int length; |
449092f6 CV |
1045 | char *pathname; |
1046 | int ret; | |
1047 | struct stat st; | |
1048 | ||
1049 | /* Parameter: Ptr to pathname / length incl. trailing zero */ | |
1050 | if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length)) | |
1051 | { | |
1052 | remote_fileio_ioerror (); | |
1053 | return; | |
1054 | } | |
1055 | /* Request pathname using 'm' packet */ | |
1056 | pathname = alloca (length); | |
f7605bc2 | 1057 | if (target_read_memory (ptrval, (gdb_byte *) pathname, length) != 0) |
449092f6 CV |
1058 | { |
1059 | remote_fileio_ioerror (); | |
1060 | return; | |
1061 | } | |
1062 | ||
1063 | /* Only operate on regular files (and directories, which allows to return | |
0df8b418 | 1064 | the correct return code). */ |
449092f6 CV |
1065 | if (!stat (pathname, &st) && !S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode)) |
1066 | { | |
1067 | remote_fileio_reply (-1, FILEIO_ENODEV); | |
1068 | return; | |
1069 | } | |
1070 | ||
1071 | remote_fio_no_longjmp = 1; | |
1072 | ret = unlink (pathname); | |
1073 | ||
1074 | if (ret == -1) | |
1075 | remote_fileio_return_errno (-1); | |
1076 | else | |
1077 | remote_fileio_return_success (ret); | |
1078 | } | |
1079 | ||
1080 | static void | |
1081 | remote_fileio_func_stat (char *buf) | |
1082 | { | |
86cc68a8 | 1083 | CORE_ADDR statptr, nameptr; |
f7605bc2 | 1084 | int ret, namelength; |
449092f6 | 1085 | char *pathname; |
cbcdb1f5 | 1086 | LONGEST lnum; |
449092f6 CV |
1087 | struct stat st; |
1088 | struct fio_stat fst; | |
1089 | ||
1090 | /* 1. Parameter: Ptr to pathname / length incl. trailing zero */ | |
86cc68a8 | 1091 | if (remote_fileio_extract_ptr_w_len (&buf, &nameptr, &namelength)) |
449092f6 CV |
1092 | { |
1093 | remote_fileio_ioerror (); | |
1094 | return; | |
1095 | } | |
86cc68a8 NS |
1096 | |
1097 | /* 2. Parameter: Ptr to struct stat */ | |
1098 | if (remote_fileio_extract_long (&buf, &lnum)) | |
449092f6 CV |
1099 | { |
1100 | remote_fileio_ioerror (); | |
1101 | return; | |
1102 | } | |
86cc68a8 NS |
1103 | statptr = (CORE_ADDR) lnum; |
1104 | ||
1105 | /* Request pathname using 'm' packet */ | |
1106 | pathname = alloca (namelength); | |
f7605bc2 | 1107 | if (target_read_memory (nameptr, (gdb_byte *) pathname, namelength) != 0) |
449092f6 CV |
1108 | { |
1109 | remote_fileio_ioerror (); | |
1110 | return; | |
1111 | } | |
449092f6 CV |
1112 | |
1113 | remote_fio_no_longjmp = 1; | |
1114 | ret = stat (pathname, &st); | |
1115 | ||
1116 | if (ret == -1) | |
1117 | { | |
1118 | remote_fileio_return_errno (-1); | |
1119 | return; | |
1120 | } | |
0df8b418 | 1121 | /* Only operate on regular files and directories. */ |
449092f6 CV |
1122 | if (!ret && !S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode)) |
1123 | { | |
1124 | remote_fileio_reply (-1, FILEIO_EACCES); | |
1125 | return; | |
1126 | } | |
86cc68a8 | 1127 | if (statptr) |
449092f6 CV |
1128 | { |
1129 | remote_fileio_to_fio_stat (&st, &fst); | |
1130 | remote_fileio_to_fio_uint (0, fst.fst_dev); | |
f7605bc2 PA |
1131 | |
1132 | errno = target_write_memory (statptr, (gdb_byte *) &fst, sizeof fst); | |
1133 | if (errno != 0) | |
449092f6 CV |
1134 | { |
1135 | remote_fileio_return_errno (-1); | |
1136 | return; | |
1137 | } | |
1138 | } | |
1139 | remote_fileio_return_success (ret); | |
1140 | } | |
1141 | ||
1142 | static void | |
1143 | remote_fileio_func_fstat (char *buf) | |
1144 | { | |
1145 | CORE_ADDR ptrval; | |
1146 | int fd, ret, retlength; | |
1147 | long target_fd; | |
cbcdb1f5 | 1148 | LONGEST lnum; |
449092f6 CV |
1149 | struct stat st; |
1150 | struct fio_stat fst; | |
1151 | struct timeval tv; | |
1152 | ||
1153 | /* 1. Parameter: file descriptor */ | |
1154 | if (remote_fileio_extract_int (&buf, &target_fd)) | |
1155 | { | |
1156 | remote_fileio_ioerror (); | |
1157 | return; | |
1158 | } | |
cbcdb1f5 CV |
1159 | fd = remote_fileio_map_fd ((int) target_fd); |
1160 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
1161 | { |
1162 | remote_fileio_badfd (); | |
1163 | return; | |
1164 | } | |
1165 | /* 2. Parameter: Ptr to struct stat */ | |
1166 | if (remote_fileio_extract_long (&buf, &lnum)) | |
1167 | { | |
1168 | remote_fileio_ioerror (); | |
1169 | return; | |
1170 | } | |
1171 | ptrval = (CORE_ADDR) lnum; | |
1172 | ||
1173 | remote_fio_no_longjmp = 1; | |
1174 | if (fd == FIO_FD_CONSOLE_IN || fd == FIO_FD_CONSOLE_OUT) | |
1175 | { | |
1176 | remote_fileio_to_fio_uint (1, fst.fst_dev); | |
2e3fd767 | 1177 | memset (&st, 0, sizeof (st)); |
449092f6 CV |
1178 | st.st_mode = S_IFCHR | (fd == FIO_FD_CONSOLE_IN ? S_IRUSR : S_IWUSR); |
1179 | st.st_nlink = 1; | |
d3ea6809 | 1180 | #ifdef HAVE_GETUID |
449092f6 | 1181 | st.st_uid = getuid (); |
d3ea6809 MM |
1182 | #endif |
1183 | #ifdef HAVE_GETGID | |
449092f6 | 1184 | st.st_gid = getgid (); |
d3ea6809 | 1185 | #endif |
d3ea6809 | 1186 | #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE |
449092f6 | 1187 | st.st_blksize = 512; |
d3ea6809 | 1188 | #endif |
1dd727e9 | 1189 | #if HAVE_STRUCT_STAT_ST_BLOCKS |
449092f6 | 1190 | st.st_blocks = 0; |
1dd727e9 | 1191 | #endif |
449092f6 CV |
1192 | if (!gettimeofday (&tv, NULL)) |
1193 | st.st_atime = st.st_mtime = st.st_ctime = tv.tv_sec; | |
1194 | else | |
1195 | st.st_atime = st.st_mtime = st.st_ctime = (time_t) 0; | |
1196 | ret = 0; | |
1197 | } | |
1198 | else | |
1199 | ret = fstat (fd, &st); | |
1200 | ||
1201 | if (ret == -1) | |
1202 | { | |
1203 | remote_fileio_return_errno (-1); | |
1204 | return; | |
1205 | } | |
1206 | if (ptrval) | |
1207 | { | |
1208 | remote_fileio_to_fio_stat (&st, &fst); | |
1209 | ||
f7605bc2 PA |
1210 | errno = target_write_memory (ptrval, (gdb_byte *) &fst, sizeof fst); |
1211 | if (errno != 0) | |
449092f6 CV |
1212 | { |
1213 | remote_fileio_return_errno (-1); | |
1214 | return; | |
1215 | } | |
1216 | } | |
1217 | remote_fileio_return_success (ret); | |
1218 | } | |
1219 | ||
1220 | static void | |
1221 | remote_fileio_func_gettimeofday (char *buf) | |
1222 | { | |
cbcdb1f5 | 1223 | LONGEST lnum; |
449092f6 CV |
1224 | CORE_ADDR ptrval; |
1225 | int ret, retlength; | |
1226 | struct timeval tv; | |
1227 | struct fio_timeval ftv; | |
1228 | ||
1229 | /* 1. Parameter: struct timeval pointer */ | |
1230 | if (remote_fileio_extract_long (&buf, &lnum)) | |
1231 | { | |
1232 | remote_fileio_ioerror (); | |
1233 | return; | |
1234 | } | |
1235 | ptrval = (CORE_ADDR) lnum; | |
0df8b418 | 1236 | /* 2. Parameter: some pointer value... */ |
449092f6 CV |
1237 | if (remote_fileio_extract_long (&buf, &lnum)) |
1238 | { | |
1239 | remote_fileio_ioerror (); | |
1240 | return; | |
1241 | } | |
0df8b418 | 1242 | /* ...which has to be NULL. */ |
449092f6 CV |
1243 | if (lnum) |
1244 | { | |
1245 | remote_fileio_reply (-1, FILEIO_EINVAL); | |
1246 | return; | |
1247 | } | |
1248 | ||
1249 | remote_fio_no_longjmp = 1; | |
1250 | ret = gettimeofday (&tv, NULL); | |
1251 | ||
1252 | if (ret == -1) | |
1253 | { | |
1254 | remote_fileio_return_errno (-1); | |
1255 | return; | |
1256 | } | |
1257 | ||
1258 | if (ptrval) | |
1259 | { | |
1260 | remote_fileio_to_fio_timeval (&tv, &ftv); | |
1261 | ||
f7605bc2 PA |
1262 | errno = target_write_memory (ptrval, (gdb_byte *) &ftv, sizeof ftv); |
1263 | if (errno != 0) | |
449092f6 CV |
1264 | { |
1265 | remote_fileio_return_errno (-1); | |
1266 | return; | |
1267 | } | |
1268 | } | |
1269 | remote_fileio_return_success (ret); | |
1270 | } | |
1271 | ||
1272 | static void | |
1273 | remote_fileio_func_isatty (char *buf) | |
1274 | { | |
1275 | long target_fd; | |
1276 | int fd; | |
1277 | ||
1278 | /* Parameter: file descriptor */ | |
1279 | if (remote_fileio_extract_int (&buf, &target_fd)) | |
1280 | { | |
1281 | remote_fileio_ioerror (); | |
1282 | return; | |
1283 | } | |
1284 | remote_fio_no_longjmp = 1; | |
1285 | fd = remote_fileio_map_fd ((int) target_fd); | |
1286 | remote_fileio_return_success (fd == FIO_FD_CONSOLE_IN || | |
1287 | fd == FIO_FD_CONSOLE_OUT ? 1 : 0); | |
1288 | } | |
1289 | ||
1290 | static void | |
1291 | remote_fileio_func_system (char *buf) | |
1292 | { | |
1293 | CORE_ADDR ptrval; | |
1294 | int ret, length, retlength; | |
5600ea19 | 1295 | char *cmdline = NULL; |
449092f6 CV |
1296 | |
1297 | /* Parameter: Ptr to commandline / length incl. trailing zero */ | |
1298 | if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length)) | |
1299 | { | |
1300 | remote_fileio_ioerror (); | |
1301 | return; | |
1302 | } | |
5600ea19 NS |
1303 | |
1304 | if (length) | |
449092f6 | 1305 | { |
5600ea19 NS |
1306 | /* Request commandline using 'm' packet */ |
1307 | cmdline = alloca (length); | |
f7605bc2 | 1308 | if (target_read_memory (ptrval, (gdb_byte *) cmdline, length) != 0) |
5600ea19 NS |
1309 | { |
1310 | remote_fileio_ioerror (); | |
1311 | return; | |
1312 | } | |
1313 | } | |
1314 | ||
1315 | /* Check if system(3) has been explicitely allowed using the | |
1316 | `set remote system-call-allowed 1' command. If length is 0, | |
1317 | indicating a NULL parameter to the system call, return zero to | |
1318 | indicate a shell is not available. Otherwise fail with EPERM. */ | |
1319 | if (!remote_fio_system_call_allowed) | |
1320 | { | |
1321 | if (!length) | |
1322 | remote_fileio_return_success (0); | |
1323 | else | |
1324 | remote_fileio_reply (-1, FILEIO_EPERM); | |
449092f6 CV |
1325 | return; |
1326 | } | |
1327 | ||
1328 | remote_fio_no_longjmp = 1; | |
1329 | ret = system (cmdline); | |
1330 | ||
5600ea19 NS |
1331 | if (!length) |
1332 | remote_fileio_return_success (ret); | |
1333 | else if (ret == -1) | |
449092f6 CV |
1334 | remote_fileio_return_errno (-1); |
1335 | else | |
1336 | remote_fileio_return_success (WEXITSTATUS (ret)); | |
1337 | } | |
1338 | ||
1339 | static struct { | |
1340 | char *name; | |
1341 | void (*func)(char *); | |
1342 | } remote_fio_func_map[] = { | |
d5d6fca5 DJ |
1343 | { "open", remote_fileio_func_open }, |
1344 | { "close", remote_fileio_func_close }, | |
1345 | { "read", remote_fileio_func_read }, | |
1346 | { "write", remote_fileio_func_write }, | |
1347 | { "lseek", remote_fileio_func_lseek }, | |
1348 | { "rename", remote_fileio_func_rename }, | |
1349 | { "unlink", remote_fileio_func_unlink }, | |
1350 | { "stat", remote_fileio_func_stat }, | |
1351 | { "fstat", remote_fileio_func_fstat }, | |
1352 | { "gettimeofday", remote_fileio_func_gettimeofday }, | |
1353 | { "isatty", remote_fileio_func_isatty }, | |
1354 | { "system", remote_fileio_func_system }, | |
1355 | { NULL, NULL } | |
449092f6 CV |
1356 | }; |
1357 | ||
1358 | static int | |
1359 | do_remote_fileio_request (struct ui_out *uiout, void *buf_arg) | |
1360 | { | |
1361 | char *buf = buf_arg; | |
1362 | char *c; | |
1363 | int idx; | |
1364 | ||
1365 | remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler); | |
1366 | ||
1367 | c = strchr (++buf, ','); | |
1368 | if (c) | |
1369 | *c++ = '\0'; | |
1370 | else | |
1371 | c = strchr (buf, '\0'); | |
1372 | for (idx = 0; remote_fio_func_map[idx].name; ++idx) | |
1373 | if (!strcmp (remote_fio_func_map[idx].name, buf)) | |
1374 | break; | |
0df8b418 | 1375 | if (!remote_fio_func_map[idx].name) /* ERROR: No such function. */ |
449092f6 CV |
1376 | return RETURN_ERROR; |
1377 | remote_fio_func_map[idx].func (c); | |
1378 | return 0; | |
1379 | } | |
1380 | ||
ad9a8f3f NS |
1381 | /* Close any open descriptors, and reinitialize the file mapping. */ |
1382 | ||
1383 | void | |
1384 | remote_fileio_reset (void) | |
1385 | { | |
1386 | int ix; | |
1387 | ||
1388 | for (ix = 0; ix != remote_fio_data.fd_map_size; ix++) | |
1389 | { | |
1390 | int fd = remote_fio_data.fd_map[ix]; | |
1391 | ||
1392 | if (fd >= 0) | |
1393 | close (fd); | |
1394 | } | |
1395 | if (remote_fio_data.fd_map) | |
1396 | { | |
6c761d9c | 1397 | xfree (remote_fio_data.fd_map); |
ad9a8f3f NS |
1398 | remote_fio_data.fd_map = NULL; |
1399 | remote_fio_data.fd_map_size = 0; | |
1400 | } | |
1401 | } | |
1402 | ||
0df8b418 MS |
1403 | /* Handle a file I/O request. BUF points to the packet containing the |
1404 | request. CTRLC_PENDING_P should be nonzero if the target has not | |
3a29589a DJ |
1405 | acknowledged the Ctrl-C sent asynchronously earlier. */ |
1406 | ||
449092f6 | 1407 | void |
3a29589a | 1408 | remote_fileio_request (char *buf, int ctrlc_pending_p) |
449092f6 CV |
1409 | { |
1410 | int ex; | |
1411 | ||
1412 | remote_fileio_sig_init (); | |
1413 | ||
3a29589a | 1414 | if (ctrlc_pending_p) |
449092f6 | 1415 | { |
3a29589a DJ |
1416 | /* If the target hasn't responded to the Ctrl-C sent |
1417 | asynchronously earlier, take this opportunity to send the | |
1418 | Ctrl-C synchronously. */ | |
1419 | remote_fio_ctrl_c_flag = 1; | |
1420 | remote_fio_no_longjmp = 0; | |
1421 | remote_fileio_reply (-1, FILEIO_EINTR); | |
1422 | } | |
1423 | else | |
1424 | { | |
1425 | remote_fio_ctrl_c_flag = 0; | |
1426 | remote_fio_no_longjmp = 0; | |
1427 | ||
1428 | ex = catch_exceptions (uiout, do_remote_fileio_request, (void *)buf, | |
1429 | RETURN_MASK_ALL); | |
1430 | switch (ex) | |
1431 | { | |
1432 | case RETURN_ERROR: | |
1433 | remote_fileio_reply (-1, FILEIO_ENOSYS); | |
1434 | break; | |
1435 | case RETURN_QUIT: | |
1436 | remote_fileio_reply (-1, FILEIO_EINTR); | |
1437 | break; | |
1438 | default: | |
1439 | break; | |
1440 | } | |
449092f6 CV |
1441 | } |
1442 | ||
1443 | remote_fileio_sig_exit (); | |
1444 | } | |
1445 | ||
1446 | static void | |
1447 | set_system_call_allowed (char *args, int from_tty) | |
1448 | { | |
1449 | if (args) | |
1450 | { | |
1451 | char *arg_end; | |
1452 | int val = strtoul (args, &arg_end, 10); | |
123f5f96 | 1453 | |
449092f6 CV |
1454 | if (*args && *arg_end == '\0') |
1455 | { | |
1456 | remote_fio_system_call_allowed = !!val; | |
1457 | return; | |
1458 | } | |
1459 | } | |
8a3fe4f8 | 1460 | error (_("Illegal argument for \"set remote system-call-allowed\" command")); |
449092f6 CV |
1461 | } |
1462 | ||
1463 | static void | |
1464 | show_system_call_allowed (char *args, int from_tty) | |
1465 | { | |
1466 | if (args) | |
3e43a32a MS |
1467 | error (_("Garbage after \"show remote " |
1468 | "system-call-allowed\" command: `%s'"), args); | |
449092f6 CV |
1469 | printf_unfiltered ("Calling host system(3) call from target is %sallowed\n", |
1470 | remote_fio_system_call_allowed ? "" : "not "); | |
1471 | } | |
1472 | ||
1473 | void | |
1474 | initialize_remote_fileio (struct cmd_list_element *remote_set_cmdlist, | |
1475 | struct cmd_list_element *remote_show_cmdlist) | |
1476 | { | |
b803fb0f DJ |
1477 | sigint_fileio_token = |
1478 | create_async_signal_handler (async_remote_fileio_interrupt, NULL); | |
1479 | ||
449092f6 CV |
1480 | add_cmd ("system-call-allowed", no_class, |
1481 | set_system_call_allowed, | |
1a966eab | 1482 | _("Set if the host system(3) call is allowed for the target."), |
449092f6 CV |
1483 | &remote_set_cmdlist); |
1484 | add_cmd ("system-call-allowed", no_class, | |
1485 | show_system_call_allowed, | |
1a966eab | 1486 | _("Show if the host system(3) call is allowed for the target."), |
449092f6 CV |
1487 | &remote_show_cmdlist); |
1488 | } |