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" |
449092f6 | 34 | |
449092f6 CV |
35 | #include <fcntl.h> |
36 | #include <sys/time.h> | |
449092f6 | 37 | #ifdef __CYGWIN__ |
0ef75e11 | 38 | #include <sys/cygwin.h> /* For cygwin_conv_to_full_posix_path. */ |
7d8500b7 PM |
39 | #include <cygwin/version.h> |
40 | #if CYGWIN_VERSION_DLL_MAKE_COMBINED(CYGWIN_VERSION_API_MAJOR,CYGWIN_VERSION_API_MINOR) < 181 | |
41 | # define CCP_POSIX_TO_WIN_A 0 | |
42 | # define CCP_WIN_A_TO_POSIX 2 | |
43 | # define cygwin_conv_path(op, from, to, size) \ | |
44 | (op == CCP_WIN_A_TO_POSIX) ? \ | |
45 | cygwin_conv_to_full_posix_path (from, to) : \ | |
46 | cygwin_conv_to_win32_path (from, to) | |
47 | #endif | |
449092f6 | 48 | #endif |
449092f6 CV |
49 | #include <signal.h> |
50 | ||
51 | static struct { | |
52 | int *fd_map; | |
53 | int fd_map_size; | |
54 | } remote_fio_data; | |
55 | ||
56 | #define FIO_FD_INVALID -1 | |
57 | #define FIO_FD_CONSOLE_IN -2 | |
58 | #define FIO_FD_CONSOLE_OUT -3 | |
59 | ||
60 | static int remote_fio_system_call_allowed = 0; | |
61 | ||
b803fb0f DJ |
62 | static struct async_signal_handler *sigint_fileio_token; |
63 | ||
449092f6 | 64 | static int |
cbcdb1f5 | 65 | remote_fileio_init_fd_map (void) |
449092f6 CV |
66 | { |
67 | int i; | |
68 | ||
69 | if (!remote_fio_data.fd_map) | |
70 | { | |
71 | remote_fio_data.fd_map = (int *) xmalloc (10 * sizeof (int)); | |
72 | remote_fio_data.fd_map_size = 10; | |
73 | remote_fio_data.fd_map[0] = FIO_FD_CONSOLE_IN; | |
74 | remote_fio_data.fd_map[1] = FIO_FD_CONSOLE_OUT; | |
75 | remote_fio_data.fd_map[2] = FIO_FD_CONSOLE_OUT; | |
76 | for (i = 3; i < 10; ++i) | |
77 | remote_fio_data.fd_map[i] = FIO_FD_INVALID; | |
78 | } | |
79 | return 3; | |
80 | } | |
81 | ||
82 | static int | |
cbcdb1f5 | 83 | remote_fileio_resize_fd_map (void) |
449092f6 | 84 | { |
9f8e6999 MG |
85 | int i = remote_fio_data.fd_map_size; |
86 | ||
449092f6 CV |
87 | if (!remote_fio_data.fd_map) |
88 | return remote_fileio_init_fd_map (); | |
89 | remote_fio_data.fd_map_size += 10; | |
90 | remote_fio_data.fd_map = | |
91 | (int *) xrealloc (remote_fio_data.fd_map, | |
92 | remote_fio_data.fd_map_size * sizeof (int)); | |
9f8e6999 MG |
93 | for (; i < remote_fio_data.fd_map_size; i++) |
94 | remote_fio_data.fd_map[i] = FIO_FD_INVALID; | |
449092f6 CV |
95 | return remote_fio_data.fd_map_size - 10; |
96 | } | |
97 | ||
98 | static int | |
cbcdb1f5 | 99 | remote_fileio_next_free_fd (void) |
449092f6 CV |
100 | { |
101 | int i; | |
102 | ||
103 | for (i = 0; i < remote_fio_data.fd_map_size; ++i) | |
104 | if (remote_fio_data.fd_map[i] == FIO_FD_INVALID) | |
105 | return i; | |
106 | return remote_fileio_resize_fd_map (); | |
107 | } | |
108 | ||
109 | static int | |
110 | remote_fileio_fd_to_targetfd (int fd) | |
111 | { | |
112 | int target_fd = remote_fileio_next_free_fd (); | |
123f5f96 | 113 | |
449092f6 CV |
114 | remote_fio_data.fd_map[target_fd] = fd; |
115 | return target_fd; | |
116 | } | |
117 | ||
118 | static int | |
119 | remote_fileio_map_fd (int target_fd) | |
120 | { | |
121 | remote_fileio_init_fd_map (); | |
122 | if (target_fd < 0 || target_fd >= remote_fio_data.fd_map_size) | |
123 | return FIO_FD_INVALID; | |
124 | return remote_fio_data.fd_map[target_fd]; | |
125 | } | |
126 | ||
127 | static void | |
128 | remote_fileio_close_target_fd (int target_fd) | |
129 | { | |
130 | remote_fileio_init_fd_map (); | |
131 | if (target_fd >= 0 && target_fd < remote_fio_data.fd_map_size) | |
132 | remote_fio_data.fd_map[target_fd] = FIO_FD_INVALID; | |
133 | } | |
134 | ||
135 | static int | |
136 | remote_fileio_oflags_to_host (long flags) | |
137 | { | |
138 | int hflags = 0; | |
139 | ||
140 | if (flags & FILEIO_O_CREAT) | |
141 | hflags |= O_CREAT; | |
142 | if (flags & FILEIO_O_EXCL) | |
143 | hflags |= O_EXCL; | |
144 | if (flags & FILEIO_O_TRUNC) | |
145 | hflags |= O_TRUNC; | |
146 | if (flags & FILEIO_O_APPEND) | |
147 | hflags |= O_APPEND; | |
148 | if (flags & FILEIO_O_RDONLY) | |
149 | hflags |= O_RDONLY; | |
150 | if (flags & FILEIO_O_WRONLY) | |
151 | hflags |= O_WRONLY; | |
152 | if (flags & FILEIO_O_RDWR) | |
153 | hflags |= O_RDWR; | |
154 | /* On systems supporting binary and text mode, always open files in | |
0df8b418 | 155 | binary mode. */ |
449092f6 CV |
156 | #ifdef O_BINARY |
157 | hflags |= O_BINARY; | |
158 | #endif | |
159 | return hflags; | |
160 | } | |
161 | ||
162 | static mode_t | |
163 | remote_fileio_mode_to_host (long mode, int open_call) | |
164 | { | |
165 | mode_t hmode = 0; | |
166 | ||
167 | if (!open_call) | |
168 | { | |
169 | if (mode & FILEIO_S_IFREG) | |
170 | hmode |= S_IFREG; | |
171 | if (mode & FILEIO_S_IFDIR) | |
172 | hmode |= S_IFDIR; | |
173 | if (mode & FILEIO_S_IFCHR) | |
174 | hmode |= S_IFCHR; | |
175 | } | |
176 | if (mode & FILEIO_S_IRUSR) | |
177 | hmode |= S_IRUSR; | |
178 | if (mode & FILEIO_S_IWUSR) | |
179 | hmode |= S_IWUSR; | |
180 | if (mode & FILEIO_S_IXUSR) | |
181 | hmode |= S_IXUSR; | |
9b265ec2 | 182 | #ifdef S_IRGRP |
449092f6 CV |
183 | if (mode & FILEIO_S_IRGRP) |
184 | hmode |= S_IRGRP; | |
9b265ec2 MM |
185 | #endif |
186 | #ifdef S_IWGRP | |
449092f6 CV |
187 | if (mode & FILEIO_S_IWGRP) |
188 | hmode |= S_IWGRP; | |
9b265ec2 MM |
189 | #endif |
190 | #ifdef S_IXGRP | |
449092f6 CV |
191 | if (mode & FILEIO_S_IXGRP) |
192 | hmode |= S_IXGRP; | |
9b265ec2 | 193 | #endif |
449092f6 CV |
194 | if (mode & FILEIO_S_IROTH) |
195 | hmode |= S_IROTH; | |
9b265ec2 | 196 | #ifdef S_IWOTH |
449092f6 CV |
197 | if (mode & FILEIO_S_IWOTH) |
198 | hmode |= S_IWOTH; | |
9b265ec2 MM |
199 | #endif |
200 | #ifdef S_IXOTH | |
449092f6 CV |
201 | if (mode & FILEIO_S_IXOTH) |
202 | hmode |= S_IXOTH; | |
9b265ec2 | 203 | #endif |
449092f6 CV |
204 | return hmode; |
205 | } | |
206 | ||
cbcdb1f5 | 207 | static LONGEST |
449092f6 CV |
208 | remote_fileio_mode_to_target (mode_t mode) |
209 | { | |
210 | mode_t tmode = 0; | |
211 | ||
9c7deb13 | 212 | if (S_ISREG(mode)) |
449092f6 | 213 | tmode |= FILEIO_S_IFREG; |
9c7deb13 | 214 | if (S_ISDIR(mode)) |
449092f6 | 215 | tmode |= FILEIO_S_IFDIR; |
9c7deb13 | 216 | if (S_ISCHR(mode)) |
449092f6 CV |
217 | tmode |= FILEIO_S_IFCHR; |
218 | if (mode & S_IRUSR) | |
219 | tmode |= FILEIO_S_IRUSR; | |
220 | if (mode & S_IWUSR) | |
221 | tmode |= FILEIO_S_IWUSR; | |
222 | if (mode & S_IXUSR) | |
223 | tmode |= FILEIO_S_IXUSR; | |
9b265ec2 | 224 | #ifdef S_IRGRP |
449092f6 CV |
225 | if (mode & S_IRGRP) |
226 | tmode |= FILEIO_S_IRGRP; | |
9b265ec2 MM |
227 | #endif |
228 | #ifdef S_IWRGRP | |
449092f6 CV |
229 | if (mode & S_IWGRP) |
230 | tmode |= FILEIO_S_IWGRP; | |
9b265ec2 MM |
231 | #endif |
232 | #ifdef S_IXGRP | |
449092f6 CV |
233 | if (mode & S_IXGRP) |
234 | tmode |= FILEIO_S_IXGRP; | |
9b265ec2 | 235 | #endif |
449092f6 CV |
236 | if (mode & S_IROTH) |
237 | tmode |= FILEIO_S_IROTH; | |
9b265ec2 | 238 | #ifdef S_IWOTH |
449092f6 CV |
239 | if (mode & S_IWOTH) |
240 | tmode |= FILEIO_S_IWOTH; | |
9b265ec2 MM |
241 | #endif |
242 | #ifdef S_IXOTH | |
449092f6 CV |
243 | if (mode & S_IXOTH) |
244 | tmode |= FILEIO_S_IXOTH; | |
9b265ec2 | 245 | #endif |
449092f6 CV |
246 | return tmode; |
247 | } | |
248 | ||
249 | static int | |
250 | remote_fileio_errno_to_target (int error) | |
251 | { | |
252 | switch (error) | |
253 | { | |
254 | case EPERM: | |
255 | return FILEIO_EPERM; | |
256 | case ENOENT: | |
257 | return FILEIO_ENOENT; | |
258 | case EINTR: | |
259 | return FILEIO_EINTR; | |
260 | case EIO: | |
261 | return FILEIO_EIO; | |
262 | case EBADF: | |
263 | return FILEIO_EBADF; | |
264 | case EACCES: | |
265 | return FILEIO_EACCES; | |
266 | case EFAULT: | |
267 | return FILEIO_EFAULT; | |
268 | case EBUSY: | |
269 | return FILEIO_EBUSY; | |
270 | case EEXIST: | |
271 | return FILEIO_EEXIST; | |
272 | case ENODEV: | |
273 | return FILEIO_ENODEV; | |
274 | case ENOTDIR: | |
275 | return FILEIO_ENOTDIR; | |
276 | case EISDIR: | |
277 | return FILEIO_EISDIR; | |
278 | case EINVAL: | |
279 | return FILEIO_EINVAL; | |
280 | case ENFILE: | |
281 | return FILEIO_ENFILE; | |
282 | case EMFILE: | |
283 | return FILEIO_EMFILE; | |
284 | case EFBIG: | |
285 | return FILEIO_EFBIG; | |
286 | case ENOSPC: | |
287 | return FILEIO_ENOSPC; | |
288 | case ESPIPE: | |
289 | return FILEIO_ESPIPE; | |
290 | case EROFS: | |
291 | return FILEIO_EROFS; | |
292 | case ENOSYS: | |
293 | return FILEIO_ENOSYS; | |
294 | case ENAMETOOLONG: | |
295 | return FILEIO_ENAMETOOLONG; | |
296 | } | |
297 | return FILEIO_EUNKNOWN; | |
298 | } | |
299 | ||
300 | static int | |
301 | remote_fileio_seek_flag_to_host (long num, int *flag) | |
302 | { | |
303 | if (!flag) | |
304 | return 0; | |
305 | switch (num) | |
306 | { | |
307 | case FILEIO_SEEK_SET: | |
308 | *flag = SEEK_SET; | |
309 | break; | |
310 | case FILEIO_SEEK_CUR: | |
311 | *flag = SEEK_CUR; | |
312 | break; | |
313 | case FILEIO_SEEK_END: | |
314 | *flag = SEEK_END; | |
315 | break; | |
316 | default: | |
317 | return -1; | |
318 | } | |
319 | return 0; | |
320 | } | |
321 | ||
322 | static int | |
cbcdb1f5 | 323 | remote_fileio_extract_long (char **buf, LONGEST *retlong) |
449092f6 CV |
324 | { |
325 | char *c; | |
326 | int sign = 1; | |
327 | ||
328 | if (!buf || !*buf || !**buf || !retlong) | |
329 | return -1; | |
330 | c = strchr (*buf, ','); | |
331 | if (c) | |
332 | *c++ = '\0'; | |
333 | else | |
334 | c = strchr (*buf, '\0'); | |
335 | while (strchr ("+-", **buf)) | |
336 | { | |
337 | if (**buf == '-') | |
338 | sign = -sign; | |
339 | ++*buf; | |
340 | } | |
341 | for (*retlong = 0; **buf; ++*buf) | |
342 | { | |
343 | *retlong <<= 4; | |
344 | if (**buf >= '0' && **buf <= '9') | |
345 | *retlong += **buf - '0'; | |
346 | else if (**buf >= 'a' && **buf <= 'f') | |
347 | *retlong += **buf - 'a' + 10; | |
348 | else if (**buf >= 'A' && **buf <= 'F') | |
349 | *retlong += **buf - 'A' + 10; | |
350 | else | |
351 | return -1; | |
352 | } | |
353 | *retlong *= sign; | |
354 | *buf = c; | |
355 | return 0; | |
356 | } | |
357 | ||
358 | static int | |
359 | remote_fileio_extract_int (char **buf, long *retint) | |
360 | { | |
361 | int ret; | |
cbcdb1f5 | 362 | LONGEST retlong; |
449092f6 CV |
363 | |
364 | if (!retint) | |
365 | return -1; | |
cbcdb1f5 CV |
366 | ret = remote_fileio_extract_long (buf, &retlong); |
367 | if (!ret) | |
449092f6 CV |
368 | *retint = (long) retlong; |
369 | return ret; | |
370 | } | |
371 | ||
372 | static int | |
373 | remote_fileio_extract_ptr_w_len (char **buf, CORE_ADDR *ptrval, int *length) | |
374 | { | |
375 | char *c; | |
cbcdb1f5 | 376 | LONGEST retlong; |
449092f6 CV |
377 | |
378 | if (!buf || !*buf || !**buf || !ptrval || !length) | |
379 | return -1; | |
380 | c = strchr (*buf, '/'); | |
381 | if (!c) | |
382 | return -1; | |
383 | *c++ = '\0'; | |
384 | if (remote_fileio_extract_long (buf, &retlong)) | |
385 | return -1; | |
386 | *ptrval = (CORE_ADDR) retlong; | |
387 | *buf = c; | |
388 | if (remote_fileio_extract_long (buf, &retlong)) | |
389 | return -1; | |
390 | *length = (int) retlong; | |
391 | return 0; | |
392 | } | |
393 | ||
0df8b418 | 394 | /* Convert to big endian. */ |
449092f6 | 395 | static void |
cbcdb1f5 | 396 | remote_fileio_to_be (LONGEST num, char *buf, int bytes) |
449092f6 CV |
397 | { |
398 | int i; | |
399 | ||
400 | for (i = 0; i < bytes; ++i) | |
401 | buf[i] = (num >> (8 * (bytes - i - 1))) & 0xff; | |
402 | } | |
403 | ||
449092f6 CV |
404 | static void |
405 | remote_fileio_to_fio_uint (long num, fio_uint_t fnum) | |
406 | { | |
cbcdb1f5 | 407 | remote_fileio_to_be ((LONGEST) num, (char *) fnum, 4); |
449092f6 CV |
408 | } |
409 | ||
410 | static void | |
411 | remote_fileio_to_fio_mode (mode_t num, fio_mode_t fnum) | |
412 | { | |
413 | remote_fileio_to_be (remote_fileio_mode_to_target(num), (char *) fnum, 4); | |
414 | } | |
415 | ||
416 | static void | |
417 | remote_fileio_to_fio_time (time_t num, fio_time_t fnum) | |
418 | { | |
cbcdb1f5 | 419 | remote_fileio_to_be ((LONGEST) num, (char *) fnum, 4); |
449092f6 CV |
420 | } |
421 | ||
422 | static void | |
cbcdb1f5 | 423 | remote_fileio_to_fio_long (LONGEST num, fio_long_t fnum) |
449092f6 CV |
424 | { |
425 | remote_fileio_to_be (num, (char *) fnum, 8); | |
426 | } | |
427 | ||
428 | static void | |
cbcdb1f5 | 429 | remote_fileio_to_fio_ulong (LONGEST num, fio_ulong_t fnum) |
449092f6 CV |
430 | { |
431 | remote_fileio_to_be (num, (char *) fnum, 8); | |
432 | } | |
433 | ||
434 | static void | |
435 | remote_fileio_to_fio_stat (struct stat *st, struct fio_stat *fst) | |
436 | { | |
d3ea6809 MM |
437 | LONGEST blksize; |
438 | ||
0df8b418 | 439 | /* `st_dev' is set in the calling function. */ |
449092f6 CV |
440 | remote_fileio_to_fio_uint ((long) st->st_ino, fst->fst_ino); |
441 | remote_fileio_to_fio_mode (st->st_mode, fst->fst_mode); | |
442 | remote_fileio_to_fio_uint ((long) st->st_nlink, fst->fst_nlink); | |
443 | remote_fileio_to_fio_uint ((long) st->st_uid, fst->fst_uid); | |
444 | remote_fileio_to_fio_uint ((long) st->st_gid, fst->fst_gid); | |
445 | remote_fileio_to_fio_uint ((long) st->st_rdev, fst->fst_rdev); | |
cbcdb1f5 | 446 | remote_fileio_to_fio_ulong ((LONGEST) st->st_size, fst->fst_size); |
d3ea6809 MM |
447 | #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE |
448 | blksize = st->st_blksize; | |
449 | #else | |
450 | blksize = 512; | |
451 | #endif | |
452 | remote_fileio_to_fio_ulong (blksize, fst->fst_blksize); | |
1dd727e9 | 453 | #if HAVE_STRUCT_STAT_ST_BLOCKS |
cbcdb1f5 | 454 | remote_fileio_to_fio_ulong ((LONGEST) st->st_blocks, fst->fst_blocks); |
1dd727e9 EZ |
455 | #else |
456 | /* FIXME: This is correct for DJGPP, but other systems that don't | |
457 | have st_blocks, if any, might prefer 512 instead of st_blksize. | |
458 | (eliz, 30-12-2003) */ | |
d3ea6809 MM |
459 | remote_fileio_to_fio_ulong (((LONGEST) st->st_size + blksize - 1) |
460 | / blksize, | |
1dd727e9 EZ |
461 | fst->fst_blocks); |
462 | #endif | |
449092f6 CV |
463 | remote_fileio_to_fio_time (st->st_atime, fst->fst_atime); |
464 | remote_fileio_to_fio_time (st->st_mtime, fst->fst_mtime); | |
465 | remote_fileio_to_fio_time (st->st_ctime, fst->fst_ctime); | |
466 | } | |
467 | ||
468 | static void | |
469 | remote_fileio_to_fio_timeval (struct timeval *tv, struct fio_timeval *ftv) | |
470 | { | |
471 | remote_fileio_to_fio_time (tv->tv_sec, ftv->ftv_sec); | |
472 | remote_fileio_to_fio_long (tv->tv_usec, ftv->ftv_usec); | |
473 | } | |
474 | ||
475 | static int remote_fio_ctrl_c_flag = 0; | |
476 | static int remote_fio_no_longjmp = 0; | |
449092f6 CV |
477 | |
478 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
479 | static struct sigaction remote_fio_sa; | |
480 | static struct sigaction remote_fio_osa; | |
481 | #else | |
482 | static void (*remote_fio_ofunc)(int); | |
483 | #endif | |
484 | ||
485 | static void | |
cbcdb1f5 | 486 | remote_fileio_sig_init (void) |
449092f6 CV |
487 | { |
488 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
489 | remote_fio_sa.sa_handler = SIG_IGN; | |
490 | sigemptyset (&remote_fio_sa.sa_mask); | |
491 | remote_fio_sa.sa_flags = 0; | |
492 | sigaction (SIGINT, &remote_fio_sa, &remote_fio_osa); | |
493 | #else | |
494 | remote_fio_ofunc = signal (SIGINT, SIG_IGN); | |
495 | #endif | |
496 | } | |
497 | ||
498 | static void | |
499 | remote_fileio_sig_set (void (*sigint_func)(int)) | |
500 | { | |
501 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
502 | remote_fio_sa.sa_handler = sigint_func; | |
503 | sigemptyset (&remote_fio_sa.sa_mask); | |
504 | remote_fio_sa.sa_flags = 0; | |
505 | sigaction (SIGINT, &remote_fio_sa, NULL); | |
506 | #else | |
507 | signal (SIGINT, sigint_func); | |
508 | #endif | |
509 | } | |
510 | ||
511 | static void | |
cbcdb1f5 | 512 | remote_fileio_sig_exit (void) |
449092f6 CV |
513 | { |
514 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
515 | sigaction (SIGINT, &remote_fio_osa, NULL); | |
516 | #else | |
517 | signal (SIGINT, remote_fio_ofunc); | |
518 | #endif | |
519 | } | |
520 | ||
b803fb0f DJ |
521 | static void |
522 | async_remote_fileio_interrupt (gdb_client_data arg) | |
523 | { | |
524 | deprecated_throw_reason (RETURN_QUIT); | |
525 | } | |
526 | ||
449092f6 CV |
527 | static void |
528 | remote_fileio_ctrl_c_signal_handler (int signo) | |
529 | { | |
530 | remote_fileio_sig_set (SIG_IGN); | |
531 | remote_fio_ctrl_c_flag = 1; | |
532 | if (!remote_fio_no_longjmp) | |
b803fb0f | 533 | gdb_call_async_signal_handler (sigint_fileio_token, 1); |
449092f6 CV |
534 | remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler); |
535 | } | |
536 | ||
537 | static void | |
538 | remote_fileio_reply (int retcode, int error) | |
539 | { | |
540 | char buf[32]; | |
541 | ||
542 | remote_fileio_sig_set (SIG_IGN); | |
543 | strcpy (buf, "F"); | |
544 | if (retcode < 0) | |
545 | { | |
546 | strcat (buf, "-"); | |
547 | retcode = -retcode; | |
548 | } | |
549 | sprintf (buf + strlen (buf), "%x", retcode); | |
550 | if (error || remote_fio_ctrl_c_flag) | |
551 | { | |
552 | if (error && remote_fio_ctrl_c_flag) | |
553 | error = FILEIO_EINTR; | |
554 | if (error < 0) | |
555 | { | |
556 | strcat (buf, "-"); | |
557 | error = -error; | |
558 | } | |
559 | sprintf (buf + strlen (buf), ",%x", error); | |
560 | if (remote_fio_ctrl_c_flag) | |
561 | strcat (buf, ",C"); | |
562 | } | |
563 | remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler); | |
564 | putpkt (buf); | |
565 | } | |
566 | ||
567 | static void | |
cbcdb1f5 | 568 | remote_fileio_ioerror (void) |
449092f6 CV |
569 | { |
570 | remote_fileio_reply (-1, FILEIO_EIO); | |
571 | } | |
572 | ||
573 | static void | |
cbcdb1f5 | 574 | remote_fileio_badfd (void) |
449092f6 CV |
575 | { |
576 | remote_fileio_reply (-1, FILEIO_EBADF); | |
577 | } | |
578 | ||
579 | static void | |
580 | remote_fileio_return_errno (int retcode) | |
581 | { | |
3e43a32a MS |
582 | remote_fileio_reply (retcode, retcode < 0 |
583 | ? remote_fileio_errno_to_target (errno) : 0); | |
449092f6 CV |
584 | } |
585 | ||
586 | static void | |
587 | remote_fileio_return_success (int retcode) | |
588 | { | |
589 | remote_fileio_reply (retcode, 0); | |
590 | } | |
591 | ||
449092f6 CV |
592 | static void |
593 | remote_fileio_func_open (char *buf) | |
594 | { | |
595 | CORE_ADDR ptrval; | |
f7605bc2 | 596 | int length; |
449092f6 CV |
597 | long num; |
598 | int flags, fd; | |
599 | mode_t mode; | |
600 | char *pathname; | |
601 | struct stat st; | |
602 | ||
0df8b418 | 603 | /* 1. Parameter: Ptr to pathname / length incl. trailing zero. */ |
449092f6 CV |
604 | if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length)) |
605 | { | |
606 | remote_fileio_ioerror (); | |
607 | return; | |
608 | } | |
609 | /* 2. Parameter: open flags */ | |
610 | if (remote_fileio_extract_int (&buf, &num)) | |
611 | { | |
612 | remote_fileio_ioerror (); | |
613 | return; | |
614 | } | |
615 | flags = remote_fileio_oflags_to_host (num); | |
616 | /* 3. Parameter: open mode */ | |
617 | if (remote_fileio_extract_int (&buf, &num)) | |
618 | { | |
619 | remote_fileio_ioerror (); | |
620 | return; | |
621 | } | |
622 | mode = remote_fileio_mode_to_host (num, 1); | |
623 | ||
f7605bc2 | 624 | /* Request pathname. */ |
449092f6 | 625 | pathname = alloca (length); |
f7605bc2 | 626 | if (target_read_memory (ptrval, (gdb_byte *) pathname, length) != 0) |
449092f6 CV |
627 | { |
628 | remote_fileio_ioerror (); | |
629 | return; | |
630 | } | |
631 | ||
632 | /* Check if pathname exists and is not a regular file or directory. If so, | |
633 | return an appropriate error code. Same for trying to open directories | |
0df8b418 | 634 | for writing. */ |
449092f6 CV |
635 | if (!stat (pathname, &st)) |
636 | { | |
637 | if (!S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode)) | |
638 | { | |
639 | remote_fileio_reply (-1, FILEIO_ENODEV); | |
640 | return; | |
641 | } | |
642 | if (S_ISDIR (st.st_mode) | |
643 | && ((flags & O_WRONLY) == O_WRONLY || (flags & O_RDWR) == O_RDWR)) | |
644 | { | |
645 | remote_fileio_reply (-1, FILEIO_EISDIR); | |
646 | return; | |
647 | } | |
648 | } | |
649 | ||
650 | remote_fio_no_longjmp = 1; | |
651 | fd = open (pathname, flags, mode); | |
652 | if (fd < 0) | |
653 | { | |
654 | remote_fileio_return_errno (-1); | |
655 | return; | |
656 | } | |
657 | ||
658 | fd = remote_fileio_fd_to_targetfd (fd); | |
659 | remote_fileio_return_success (fd); | |
660 | } | |
661 | ||
662 | static void | |
663 | remote_fileio_func_close (char *buf) | |
664 | { | |
665 | long num; | |
666 | int fd; | |
667 | ||
668 | /* Parameter: file descriptor */ | |
669 | if (remote_fileio_extract_int (&buf, &num)) | |
670 | { | |
671 | remote_fileio_ioerror (); | |
672 | return; | |
673 | } | |
cbcdb1f5 CV |
674 | fd = remote_fileio_map_fd ((int) num); |
675 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
676 | { |
677 | remote_fileio_badfd (); | |
678 | return; | |
679 | } | |
680 | ||
681 | remote_fio_no_longjmp = 1; | |
682 | if (fd != FIO_FD_CONSOLE_IN && fd != FIO_FD_CONSOLE_OUT && close (fd)) | |
683 | remote_fileio_return_errno (-1); | |
684 | remote_fileio_close_target_fd ((int) num); | |
685 | remote_fileio_return_success (0); | |
686 | } | |
687 | ||
688 | static void | |
689 | remote_fileio_func_read (char *buf) | |
690 | { | |
691 | long target_fd, num; | |
cbcdb1f5 | 692 | LONGEST lnum; |
449092f6 CV |
693 | CORE_ADDR ptrval; |
694 | int fd, ret, retlength; | |
cfd77fa1 | 695 | gdb_byte *buffer; |
449092f6 CV |
696 | size_t length; |
697 | off_t old_offset, new_offset; | |
698 | ||
699 | /* 1. Parameter: file descriptor */ | |
700 | if (remote_fileio_extract_int (&buf, &target_fd)) | |
701 | { | |
702 | remote_fileio_ioerror (); | |
703 | return; | |
704 | } | |
cbcdb1f5 CV |
705 | fd = remote_fileio_map_fd ((int) target_fd); |
706 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
707 | { |
708 | remote_fileio_badfd (); | |
709 | return; | |
710 | } | |
711 | /* 2. Parameter: buffer pointer */ | |
712 | if (remote_fileio_extract_long (&buf, &lnum)) | |
713 | { | |
714 | remote_fileio_ioerror (); | |
715 | return; | |
716 | } | |
717 | ptrval = (CORE_ADDR) lnum; | |
718 | /* 3. Parameter: buffer length */ | |
719 | if (remote_fileio_extract_int (&buf, &num)) | |
720 | { | |
721 | remote_fileio_ioerror (); | |
722 | return; | |
723 | } | |
724 | length = (size_t) num; | |
725 | ||
726 | switch (fd) | |
727 | { | |
728 | case FIO_FD_CONSOLE_OUT: | |
729 | remote_fileio_badfd (); | |
730 | return; | |
731 | case FIO_FD_CONSOLE_IN: | |
732 | { | |
733 | static char *remaining_buf = NULL; | |
734 | static int remaining_length = 0; | |
735 | ||
b86ab4ff | 736 | buffer = (gdb_byte *) xmalloc (16384); |
449092f6 CV |
737 | if (remaining_buf) |
738 | { | |
739 | remote_fio_no_longjmp = 1; | |
740 | if (remaining_length > length) | |
741 | { | |
742 | memcpy (buffer, remaining_buf, length); | |
743 | memmove (remaining_buf, remaining_buf + length, | |
744 | remaining_length - length); | |
745 | remaining_length -= length; | |
746 | ret = length; | |
747 | } | |
748 | else | |
749 | { | |
750 | memcpy (buffer, remaining_buf, remaining_length); | |
751 | xfree (remaining_buf); | |
752 | remaining_buf = NULL; | |
753 | ret = remaining_length; | |
754 | } | |
755 | } | |
756 | else | |
757 | { | |
b86ab4ff DJ |
758 | /* Windows (at least XP and Server 2003) has difficulty |
759 | with large reads from consoles. If a handle is | |
760 | backed by a real console device, overly large reads | |
761 | from the handle will fail and set errno == ENOMEM. | |
762 | On a Windows Server 2003 system where I tested, | |
763 | reading 26608 bytes from the console was OK, but | |
764 | anything above 26609 bytes would fail. The limit has | |
765 | been observed to vary on different systems. So, we | |
766 | limit this read to something smaller than that - by a | |
767 | safe margin, in case the limit depends on system | |
768 | resources or version. */ | |
769 | ret = ui_file_read (gdb_stdtargin, (char *) buffer, 16383); | |
449092f6 CV |
770 | remote_fio_no_longjmp = 1; |
771 | if (ret > 0 && (size_t)ret > length) | |
772 | { | |
773 | remaining_buf = (char *) xmalloc (ret - length); | |
774 | remaining_length = ret - length; | |
775 | memcpy (remaining_buf, buffer + length, remaining_length); | |
776 | ret = length; | |
777 | } | |
778 | } | |
779 | } | |
780 | break; | |
781 | default: | |
cfd77fa1 | 782 | buffer = (gdb_byte *) xmalloc (length); |
449092f6 CV |
783 | /* POSIX defines EINTR behaviour of read in a weird way. It's allowed |
784 | for read() to return -1 even if "some" bytes have been read. It | |
785 | has been corrected in SUSv2 but that doesn't help us much... | |
786 | Therefore a complete solution must check how many bytes have been | |
787 | read on EINTR to return a more reliable value to the target */ | |
788 | old_offset = lseek (fd, 0, SEEK_CUR); | |
789 | remote_fio_no_longjmp = 1; | |
790 | ret = read (fd, buffer, length); | |
791 | if (ret < 0 && errno == EINTR) | |
792 | { | |
793 | new_offset = lseek (fd, 0, SEEK_CUR); | |
794 | /* If some data has been read, return the number of bytes read. | |
0df8b418 | 795 | The Ctrl-C flag is set in remote_fileio_reply() anyway. */ |
449092f6 CV |
796 | if (old_offset != new_offset) |
797 | ret = new_offset - old_offset; | |
798 | } | |
799 | break; | |
800 | } | |
801 | ||
802 | if (ret > 0) | |
803 | { | |
f7605bc2 PA |
804 | errno = target_write_memory (ptrval, buffer, ret); |
805 | if (errno != 0) | |
806 | ret = -1; | |
449092f6 CV |
807 | } |
808 | ||
809 | if (ret < 0) | |
810 | remote_fileio_return_errno (-1); | |
811 | else | |
812 | remote_fileio_return_success (ret); | |
813 | ||
814 | xfree (buffer); | |
815 | } | |
816 | ||
817 | static void | |
818 | remote_fileio_func_write (char *buf) | |
819 | { | |
820 | long target_fd, num; | |
cbcdb1f5 | 821 | LONGEST lnum; |
449092f6 | 822 | CORE_ADDR ptrval; |
f7605bc2 | 823 | int fd, ret; |
cfd77fa1 | 824 | gdb_byte *buffer; |
449092f6 CV |
825 | size_t length; |
826 | ||
827 | /* 1. Parameter: file descriptor */ | |
828 | if (remote_fileio_extract_int (&buf, &target_fd)) | |
829 | { | |
830 | remote_fileio_ioerror (); | |
831 | return; | |
832 | } | |
cbcdb1f5 CV |
833 | fd = remote_fileio_map_fd ((int) target_fd); |
834 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
835 | { |
836 | remote_fileio_badfd (); | |
837 | return; | |
838 | } | |
839 | /* 2. Parameter: buffer pointer */ | |
840 | if (remote_fileio_extract_long (&buf, &lnum)) | |
841 | { | |
842 | remote_fileio_ioerror (); | |
843 | return; | |
844 | } | |
845 | ptrval = (CORE_ADDR) lnum; | |
846 | /* 3. Parameter: buffer length */ | |
847 | if (remote_fileio_extract_int (&buf, &num)) | |
848 | { | |
849 | remote_fileio_ioerror (); | |
850 | return; | |
851 | } | |
852 | length = (size_t) num; | |
853 | ||
cfd77fa1 | 854 | buffer = (gdb_byte *) xmalloc (length); |
f7605bc2 | 855 | if (target_read_memory (ptrval, buffer, length) != 0) |
449092f6 CV |
856 | { |
857 | xfree (buffer); | |
858 | remote_fileio_ioerror (); | |
859 | return; | |
860 | } | |
861 | ||
862 | remote_fio_no_longjmp = 1; | |
863 | switch (fd) | |
864 | { | |
865 | case FIO_FD_CONSOLE_IN: | |
866 | remote_fileio_badfd (); | |
1ed489bd | 867 | xfree (buffer); |
449092f6 CV |
868 | return; |
869 | case FIO_FD_CONSOLE_OUT: | |
cfd77fa1 DJ |
870 | ui_file_write (target_fd == 1 ? gdb_stdtarg : gdb_stdtargerr, |
871 | (char *) buffer, length); | |
449092f6 CV |
872 | gdb_flush (target_fd == 1 ? gdb_stdtarg : gdb_stdtargerr); |
873 | ret = length; | |
874 | break; | |
875 | default: | |
876 | ret = write (fd, buffer, length); | |
877 | if (ret < 0 && errno == EACCES) | |
3e43a32a | 878 | errno = EBADF; /* Cygwin returns EACCESS when writing to a |
0df8b418 | 879 | R/O file. */ |
449092f6 CV |
880 | break; |
881 | } | |
882 | ||
883 | if (ret < 0) | |
884 | remote_fileio_return_errno (-1); | |
885 | else | |
886 | remote_fileio_return_success (ret); | |
887 | ||
888 | xfree (buffer); | |
889 | } | |
890 | ||
891 | static void | |
892 | remote_fileio_func_lseek (char *buf) | |
893 | { | |
894 | long num; | |
cbcdb1f5 | 895 | LONGEST lnum; |
449092f6 CV |
896 | int fd, flag; |
897 | off_t offset, ret; | |
898 | ||
899 | /* 1. Parameter: file descriptor */ | |
900 | if (remote_fileio_extract_int (&buf, &num)) | |
901 | { | |
902 | remote_fileio_ioerror (); | |
903 | return; | |
904 | } | |
cbcdb1f5 CV |
905 | fd = remote_fileio_map_fd ((int) num); |
906 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
907 | { |
908 | remote_fileio_badfd (); | |
909 | return; | |
910 | } | |
911 | else if (fd == FIO_FD_CONSOLE_IN || fd == FIO_FD_CONSOLE_OUT) | |
912 | { | |
913 | remote_fileio_reply (-1, FILEIO_ESPIPE); | |
914 | return; | |
915 | } | |
916 | ||
917 | /* 2. Parameter: offset */ | |
918 | if (remote_fileio_extract_long (&buf, &lnum)) | |
919 | { | |
920 | remote_fileio_ioerror (); | |
921 | return; | |
922 | } | |
923 | offset = (off_t) lnum; | |
924 | /* 3. Parameter: flag */ | |
925 | if (remote_fileio_extract_int (&buf, &num)) | |
926 | { | |
927 | remote_fileio_ioerror (); | |
928 | return; | |
929 | } | |
930 | if (remote_fileio_seek_flag_to_host (num, &flag)) | |
931 | { | |
932 | remote_fileio_reply (-1, FILEIO_EINVAL); | |
933 | return; | |
934 | } | |
935 | ||
936 | remote_fio_no_longjmp = 1; | |
937 | ret = lseek (fd, offset, flag); | |
938 | ||
939 | if (ret == (off_t) -1) | |
940 | remote_fileio_return_errno (-1); | |
941 | else | |
942 | remote_fileio_return_success (ret); | |
943 | } | |
944 | ||
945 | static void | |
946 | remote_fileio_func_rename (char *buf) | |
947 | { | |
86cc68a8 | 948 | CORE_ADDR old_ptr, new_ptr; |
f7605bc2 | 949 | int old_len, new_len; |
449092f6 CV |
950 | char *oldpath, *newpath; |
951 | int ret, of, nf; | |
952 | struct stat ost, nst; | |
953 | ||
954 | /* 1. Parameter: Ptr to oldpath / length incl. trailing zero */ | |
86cc68a8 | 955 | if (remote_fileio_extract_ptr_w_len (&buf, &old_ptr, &old_len)) |
449092f6 CV |
956 | { |
957 | remote_fileio_ioerror (); | |
958 | return; | |
959 | } | |
86cc68a8 NS |
960 | |
961 | /* 2. Parameter: Ptr to newpath / length incl. trailing zero */ | |
962 | if (remote_fileio_extract_ptr_w_len (&buf, &new_ptr, &new_len)) | |
449092f6 CV |
963 | { |
964 | remote_fileio_ioerror (); | |
965 | return; | |
966 | } | |
86cc68a8 NS |
967 | |
968 | /* Request oldpath using 'm' packet */ | |
969 | oldpath = alloca (old_len); | |
f7605bc2 | 970 | if (target_read_memory (old_ptr, (gdb_byte *) oldpath, old_len) != 0) |
449092f6 CV |
971 | { |
972 | remote_fileio_ioerror (); | |
973 | return; | |
974 | } | |
86cc68a8 | 975 | |
449092f6 | 976 | /* Request newpath using 'm' packet */ |
86cc68a8 | 977 | newpath = alloca (new_len); |
f7605bc2 | 978 | if (target_read_memory (new_ptr, (gdb_byte *) newpath, new_len) != 0) |
449092f6 CV |
979 | { |
980 | remote_fileio_ioerror (); | |
981 | return; | |
982 | } | |
983 | ||
0df8b418 | 984 | /* Only operate on regular files and directories. */ |
cbcdb1f5 CV |
985 | of = stat (oldpath, &ost); |
986 | nf = stat (newpath, &nst); | |
987 | if ((!of && !S_ISREG (ost.st_mode) && !S_ISDIR (ost.st_mode)) | |
988 | || (!nf && !S_ISREG (nst.st_mode) && !S_ISDIR (nst.st_mode))) | |
449092f6 CV |
989 | { |
990 | remote_fileio_reply (-1, FILEIO_EACCES); | |
991 | return; | |
992 | } | |
993 | ||
994 | remote_fio_no_longjmp = 1; | |
995 | ret = rename (oldpath, newpath); | |
996 | ||
997 | if (ret == -1) | |
998 | { | |
999 | /* Special case: newpath is a non-empty directory. Some systems | |
1000 | return ENOTEMPTY, some return EEXIST. We coerce that to be | |
0df8b418 | 1001 | always EEXIST. */ |
449092f6 CV |
1002 | if (errno == ENOTEMPTY) |
1003 | errno = EEXIST; | |
1004 | #ifdef __CYGWIN__ | |
0df8b418 | 1005 | /* Workaround some Cygwin problems with correct errnos. */ |
449092f6 CV |
1006 | if (errno == EACCES) |
1007 | { | |
1008 | if (!of && !nf && S_ISDIR (nst.st_mode)) | |
1009 | { | |
1010 | if (S_ISREG (ost.st_mode)) | |
1011 | errno = EISDIR; | |
1012 | else | |
1013 | { | |
d0d0ab16 CV |
1014 | char oldfullpath[PATH_MAX]; |
1015 | char newfullpath[PATH_MAX]; | |
449092f6 CV |
1016 | int len; |
1017 | ||
d0d0ab16 CV |
1018 | cygwin_conv_path (CCP_WIN_A_TO_POSIX, oldpath, oldfullpath, |
1019 | PATH_MAX); | |
1020 | cygwin_conv_path (CCP_WIN_A_TO_POSIX, newpath, newfullpath, | |
1021 | PATH_MAX); | |
449092f6 CV |
1022 | len = strlen (oldfullpath); |
1023 | if (newfullpath[len] == '/' | |
1024 | && !strncmp (oldfullpath, newfullpath, len)) | |
1025 | errno = EINVAL; | |
1026 | else | |
1027 | errno = EEXIST; | |
1028 | } | |
1029 | } | |
1030 | } | |
1031 | #endif | |
1032 | ||
1033 | remote_fileio_return_errno (-1); | |
1034 | } | |
1035 | else | |
1036 | remote_fileio_return_success (ret); | |
1037 | } | |
1038 | ||
1039 | static void | |
1040 | remote_fileio_func_unlink (char *buf) | |
1041 | { | |
1042 | CORE_ADDR ptrval; | |
f7605bc2 | 1043 | int length; |
449092f6 CV |
1044 | char *pathname; |
1045 | int ret; | |
1046 | struct stat st; | |
1047 | ||
1048 | /* Parameter: Ptr to pathname / length incl. trailing zero */ | |
1049 | if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length)) | |
1050 | { | |
1051 | remote_fileio_ioerror (); | |
1052 | return; | |
1053 | } | |
1054 | /* Request pathname using 'm' packet */ | |
1055 | pathname = alloca (length); | |
f7605bc2 | 1056 | if (target_read_memory (ptrval, (gdb_byte *) pathname, length) != 0) |
449092f6 CV |
1057 | { |
1058 | remote_fileio_ioerror (); | |
1059 | return; | |
1060 | } | |
1061 | ||
1062 | /* Only operate on regular files (and directories, which allows to return | |
0df8b418 | 1063 | the correct return code). */ |
449092f6 CV |
1064 | if (!stat (pathname, &st) && !S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode)) |
1065 | { | |
1066 | remote_fileio_reply (-1, FILEIO_ENODEV); | |
1067 | return; | |
1068 | } | |
1069 | ||
1070 | remote_fio_no_longjmp = 1; | |
1071 | ret = unlink (pathname); | |
1072 | ||
1073 | if (ret == -1) | |
1074 | remote_fileio_return_errno (-1); | |
1075 | else | |
1076 | remote_fileio_return_success (ret); | |
1077 | } | |
1078 | ||
1079 | static void | |
1080 | remote_fileio_func_stat (char *buf) | |
1081 | { | |
86cc68a8 | 1082 | CORE_ADDR statptr, nameptr; |
f7605bc2 | 1083 | int ret, namelength; |
449092f6 | 1084 | char *pathname; |
cbcdb1f5 | 1085 | LONGEST lnum; |
449092f6 CV |
1086 | struct stat st; |
1087 | struct fio_stat fst; | |
1088 | ||
1089 | /* 1. Parameter: Ptr to pathname / length incl. trailing zero */ | |
86cc68a8 | 1090 | if (remote_fileio_extract_ptr_w_len (&buf, &nameptr, &namelength)) |
449092f6 CV |
1091 | { |
1092 | remote_fileio_ioerror (); | |
1093 | return; | |
1094 | } | |
86cc68a8 NS |
1095 | |
1096 | /* 2. Parameter: Ptr to struct stat */ | |
1097 | if (remote_fileio_extract_long (&buf, &lnum)) | |
449092f6 CV |
1098 | { |
1099 | remote_fileio_ioerror (); | |
1100 | return; | |
1101 | } | |
86cc68a8 NS |
1102 | statptr = (CORE_ADDR) lnum; |
1103 | ||
1104 | /* Request pathname using 'm' packet */ | |
1105 | pathname = alloca (namelength); | |
f7605bc2 | 1106 | if (target_read_memory (nameptr, (gdb_byte *) pathname, namelength) != 0) |
449092f6 CV |
1107 | { |
1108 | remote_fileio_ioerror (); | |
1109 | return; | |
1110 | } | |
449092f6 CV |
1111 | |
1112 | remote_fio_no_longjmp = 1; | |
1113 | ret = stat (pathname, &st); | |
1114 | ||
1115 | if (ret == -1) | |
1116 | { | |
1117 | remote_fileio_return_errno (-1); | |
1118 | return; | |
1119 | } | |
0df8b418 | 1120 | /* Only operate on regular files and directories. */ |
449092f6 CV |
1121 | if (!ret && !S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode)) |
1122 | { | |
1123 | remote_fileio_reply (-1, FILEIO_EACCES); | |
1124 | return; | |
1125 | } | |
86cc68a8 | 1126 | if (statptr) |
449092f6 CV |
1127 | { |
1128 | remote_fileio_to_fio_stat (&st, &fst); | |
1129 | remote_fileio_to_fio_uint (0, fst.fst_dev); | |
f7605bc2 PA |
1130 | |
1131 | errno = target_write_memory (statptr, (gdb_byte *) &fst, sizeof fst); | |
1132 | if (errno != 0) | |
449092f6 CV |
1133 | { |
1134 | remote_fileio_return_errno (-1); | |
1135 | return; | |
1136 | } | |
1137 | } | |
1138 | remote_fileio_return_success (ret); | |
1139 | } | |
1140 | ||
1141 | static void | |
1142 | remote_fileio_func_fstat (char *buf) | |
1143 | { | |
1144 | CORE_ADDR ptrval; | |
1145 | int fd, ret, retlength; | |
1146 | long target_fd; | |
cbcdb1f5 | 1147 | LONGEST lnum; |
449092f6 CV |
1148 | struct stat st; |
1149 | struct fio_stat fst; | |
1150 | struct timeval tv; | |
1151 | ||
1152 | /* 1. Parameter: file descriptor */ | |
1153 | if (remote_fileio_extract_int (&buf, &target_fd)) | |
1154 | { | |
1155 | remote_fileio_ioerror (); | |
1156 | return; | |
1157 | } | |
cbcdb1f5 CV |
1158 | fd = remote_fileio_map_fd ((int) target_fd); |
1159 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
1160 | { |
1161 | remote_fileio_badfd (); | |
1162 | return; | |
1163 | } | |
1164 | /* 2. Parameter: Ptr to struct stat */ | |
1165 | if (remote_fileio_extract_long (&buf, &lnum)) | |
1166 | { | |
1167 | remote_fileio_ioerror (); | |
1168 | return; | |
1169 | } | |
1170 | ptrval = (CORE_ADDR) lnum; | |
1171 | ||
1172 | remote_fio_no_longjmp = 1; | |
1173 | if (fd == FIO_FD_CONSOLE_IN || fd == FIO_FD_CONSOLE_OUT) | |
1174 | { | |
1175 | remote_fileio_to_fio_uint (1, fst.fst_dev); | |
1176 | st.st_mode = S_IFCHR | (fd == FIO_FD_CONSOLE_IN ? S_IRUSR : S_IWUSR); | |
1177 | st.st_nlink = 1; | |
d3ea6809 | 1178 | #ifdef HAVE_GETUID |
449092f6 | 1179 | st.st_uid = getuid (); |
d3ea6809 MM |
1180 | #else |
1181 | st.st_uid = 0; | |
1182 | #endif | |
1183 | #ifdef HAVE_GETGID | |
449092f6 | 1184 | st.st_gid = getgid (); |
d3ea6809 MM |
1185 | #else |
1186 | st.st_gid = 0; | |
1187 | #endif | |
449092f6 CV |
1188 | st.st_rdev = 0; |
1189 | st.st_size = 0; | |
d3ea6809 | 1190 | #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE |
449092f6 | 1191 | st.st_blksize = 512; |
d3ea6809 | 1192 | #endif |
1dd727e9 | 1193 | #if HAVE_STRUCT_STAT_ST_BLOCKS |
449092f6 | 1194 | st.st_blocks = 0; |
1dd727e9 | 1195 | #endif |
449092f6 CV |
1196 | if (!gettimeofday (&tv, NULL)) |
1197 | st.st_atime = st.st_mtime = st.st_ctime = tv.tv_sec; | |
1198 | else | |
1199 | st.st_atime = st.st_mtime = st.st_ctime = (time_t) 0; | |
1200 | ret = 0; | |
1201 | } | |
1202 | else | |
1203 | ret = fstat (fd, &st); | |
1204 | ||
1205 | if (ret == -1) | |
1206 | { | |
1207 | remote_fileio_return_errno (-1); | |
1208 | return; | |
1209 | } | |
1210 | if (ptrval) | |
1211 | { | |
1212 | remote_fileio_to_fio_stat (&st, &fst); | |
1213 | ||
f7605bc2 PA |
1214 | errno = target_write_memory (ptrval, (gdb_byte *) &fst, sizeof fst); |
1215 | if (errno != 0) | |
449092f6 CV |
1216 | { |
1217 | remote_fileio_return_errno (-1); | |
1218 | return; | |
1219 | } | |
1220 | } | |
1221 | remote_fileio_return_success (ret); | |
1222 | } | |
1223 | ||
1224 | static void | |
1225 | remote_fileio_func_gettimeofday (char *buf) | |
1226 | { | |
cbcdb1f5 | 1227 | LONGEST lnum; |
449092f6 CV |
1228 | CORE_ADDR ptrval; |
1229 | int ret, retlength; | |
1230 | struct timeval tv; | |
1231 | struct fio_timeval ftv; | |
1232 | ||
1233 | /* 1. Parameter: struct timeval pointer */ | |
1234 | if (remote_fileio_extract_long (&buf, &lnum)) | |
1235 | { | |
1236 | remote_fileio_ioerror (); | |
1237 | return; | |
1238 | } | |
1239 | ptrval = (CORE_ADDR) lnum; | |
0df8b418 | 1240 | /* 2. Parameter: some pointer value... */ |
449092f6 CV |
1241 | if (remote_fileio_extract_long (&buf, &lnum)) |
1242 | { | |
1243 | remote_fileio_ioerror (); | |
1244 | return; | |
1245 | } | |
0df8b418 | 1246 | /* ...which has to be NULL. */ |
449092f6 CV |
1247 | if (lnum) |
1248 | { | |
1249 | remote_fileio_reply (-1, FILEIO_EINVAL); | |
1250 | return; | |
1251 | } | |
1252 | ||
1253 | remote_fio_no_longjmp = 1; | |
1254 | ret = gettimeofday (&tv, NULL); | |
1255 | ||
1256 | if (ret == -1) | |
1257 | { | |
1258 | remote_fileio_return_errno (-1); | |
1259 | return; | |
1260 | } | |
1261 | ||
1262 | if (ptrval) | |
1263 | { | |
1264 | remote_fileio_to_fio_timeval (&tv, &ftv); | |
1265 | ||
f7605bc2 PA |
1266 | errno = target_write_memory (ptrval, (gdb_byte *) &ftv, sizeof ftv); |
1267 | if (errno != 0) | |
449092f6 CV |
1268 | { |
1269 | remote_fileio_return_errno (-1); | |
1270 | return; | |
1271 | } | |
1272 | } | |
1273 | remote_fileio_return_success (ret); | |
1274 | } | |
1275 | ||
1276 | static void | |
1277 | remote_fileio_func_isatty (char *buf) | |
1278 | { | |
1279 | long target_fd; | |
1280 | int fd; | |
1281 | ||
1282 | /* Parameter: file descriptor */ | |
1283 | if (remote_fileio_extract_int (&buf, &target_fd)) | |
1284 | { | |
1285 | remote_fileio_ioerror (); | |
1286 | return; | |
1287 | } | |
1288 | remote_fio_no_longjmp = 1; | |
1289 | fd = remote_fileio_map_fd ((int) target_fd); | |
1290 | remote_fileio_return_success (fd == FIO_FD_CONSOLE_IN || | |
1291 | fd == FIO_FD_CONSOLE_OUT ? 1 : 0); | |
1292 | } | |
1293 | ||
1294 | static void | |
1295 | remote_fileio_func_system (char *buf) | |
1296 | { | |
1297 | CORE_ADDR ptrval; | |
1298 | int ret, length, retlength; | |
5600ea19 | 1299 | char *cmdline = NULL; |
449092f6 CV |
1300 | |
1301 | /* Parameter: Ptr to commandline / length incl. trailing zero */ | |
1302 | if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length)) | |
1303 | { | |
1304 | remote_fileio_ioerror (); | |
1305 | return; | |
1306 | } | |
5600ea19 NS |
1307 | |
1308 | if (length) | |
449092f6 | 1309 | { |
5600ea19 NS |
1310 | /* Request commandline using 'm' packet */ |
1311 | cmdline = alloca (length); | |
f7605bc2 | 1312 | if (target_read_memory (ptrval, (gdb_byte *) cmdline, length) != 0) |
5600ea19 NS |
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; | |
0df8b418 | 1379 | if (!remote_fio_func_map[idx].name) /* ERROR: No such function. */ |
449092f6 CV |
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 | { | |
6c761d9c | 1401 | xfree (remote_fio_data.fd_map); |
ad9a8f3f NS |
1402 | remote_fio_data.fd_map = NULL; |
1403 | remote_fio_data.fd_map_size = 0; | |
1404 | } | |
1405 | } | |
1406 | ||
0df8b418 MS |
1407 | /* Handle a file I/O request. BUF points to the packet containing the |
1408 | request. CTRLC_PENDING_P should be nonzero if the target has not | |
3a29589a DJ |
1409 | acknowledged the Ctrl-C sent asynchronously earlier. */ |
1410 | ||
449092f6 | 1411 | void |
3a29589a | 1412 | remote_fileio_request (char *buf, int ctrlc_pending_p) |
449092f6 CV |
1413 | { |
1414 | int ex; | |
1415 | ||
1416 | remote_fileio_sig_init (); | |
1417 | ||
3a29589a | 1418 | if (ctrlc_pending_p) |
449092f6 | 1419 | { |
3a29589a DJ |
1420 | /* If the target hasn't responded to the Ctrl-C sent |
1421 | asynchronously earlier, take this opportunity to send the | |
1422 | Ctrl-C synchronously. */ | |
1423 | remote_fio_ctrl_c_flag = 1; | |
1424 | remote_fio_no_longjmp = 0; | |
1425 | remote_fileio_reply (-1, FILEIO_EINTR); | |
1426 | } | |
1427 | else | |
1428 | { | |
1429 | remote_fio_ctrl_c_flag = 0; | |
1430 | remote_fio_no_longjmp = 0; | |
1431 | ||
1432 | ex = catch_exceptions (uiout, do_remote_fileio_request, (void *)buf, | |
1433 | RETURN_MASK_ALL); | |
1434 | switch (ex) | |
1435 | { | |
1436 | case RETURN_ERROR: | |
1437 | remote_fileio_reply (-1, FILEIO_ENOSYS); | |
1438 | break; | |
1439 | case RETURN_QUIT: | |
1440 | remote_fileio_reply (-1, FILEIO_EINTR); | |
1441 | break; | |
1442 | default: | |
1443 | break; | |
1444 | } | |
449092f6 CV |
1445 | } |
1446 | ||
1447 | remote_fileio_sig_exit (); | |
1448 | } | |
1449 | ||
1450 | static void | |
1451 | set_system_call_allowed (char *args, int from_tty) | |
1452 | { | |
1453 | if (args) | |
1454 | { | |
1455 | char *arg_end; | |
1456 | int val = strtoul (args, &arg_end, 10); | |
123f5f96 | 1457 | |
449092f6 CV |
1458 | if (*args && *arg_end == '\0') |
1459 | { | |
1460 | remote_fio_system_call_allowed = !!val; | |
1461 | return; | |
1462 | } | |
1463 | } | |
8a3fe4f8 | 1464 | error (_("Illegal argument for \"set remote system-call-allowed\" command")); |
449092f6 CV |
1465 | } |
1466 | ||
1467 | static void | |
1468 | show_system_call_allowed (char *args, int from_tty) | |
1469 | { | |
1470 | if (args) | |
3e43a32a MS |
1471 | error (_("Garbage after \"show remote " |
1472 | "system-call-allowed\" command: `%s'"), args); | |
449092f6 CV |
1473 | printf_unfiltered ("Calling host system(3) call from target is %sallowed\n", |
1474 | remote_fio_system_call_allowed ? "" : "not "); | |
1475 | } | |
1476 | ||
1477 | void | |
1478 | initialize_remote_fileio (struct cmd_list_element *remote_set_cmdlist, | |
1479 | struct cmd_list_element *remote_show_cmdlist) | |
1480 | { | |
b803fb0f DJ |
1481 | sigint_fileio_token = |
1482 | create_async_signal_handler (async_remote_fileio_interrupt, NULL); | |
1483 | ||
449092f6 CV |
1484 | add_cmd ("system-call-allowed", no_class, |
1485 | set_system_call_allowed, | |
1a966eab | 1486 | _("Set if the host system(3) call is allowed for the target."), |
449092f6 CV |
1487 | &remote_set_cmdlist); |
1488 | add_cmd ("system-call-allowed", no_class, | |
1489 | show_system_call_allowed, | |
1a966eab | 1490 | _("Show if the host system(3) call is allowed for the target."), |
449092f6 CV |
1491 | &remote_show_cmdlist); |
1492 | } |