Commit | Line | Data |
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449092f6 CV |
1 | /* Remote File-I/O communications |
2 | ||
4c38e0a4 | 3 | Copyright (C) 2003, 2005, 2006, 2007, 2008, 2009, 2010 |
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 CV |
20 | |
21 | /* See the GDB User Guide for details of the GDB remote protocol. */ | |
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" |
449092f6 | 33 | |
449092f6 CV |
34 | #include <fcntl.h> |
35 | #include <sys/time.h> | |
449092f6 | 36 | #ifdef __CYGWIN__ |
0ef75e11 | 37 | #include <sys/cygwin.h> /* For cygwin_conv_to_full_posix_path. */ |
7d8500b7 PM |
38 | #include <cygwin/version.h> |
39 | #if CYGWIN_VERSION_DLL_MAKE_COMBINED(CYGWIN_VERSION_API_MAJOR,CYGWIN_VERSION_API_MINOR) < 181 | |
40 | # define CCP_POSIX_TO_WIN_A 0 | |
41 | # define CCP_WIN_A_TO_POSIX 2 | |
42 | # define cygwin_conv_path(op, from, to, size) \ | |
43 | (op == CCP_WIN_A_TO_POSIX) ? \ | |
44 | cygwin_conv_to_full_posix_path (from, to) : \ | |
45 | cygwin_conv_to_win32_path (from, to) | |
46 | #endif | |
449092f6 | 47 | #endif |
449092f6 CV |
48 | #include <signal.h> |
49 | ||
50 | static struct { | |
51 | int *fd_map; | |
52 | int fd_map_size; | |
53 | } remote_fio_data; | |
54 | ||
55 | #define FIO_FD_INVALID -1 | |
56 | #define FIO_FD_CONSOLE_IN -2 | |
57 | #define FIO_FD_CONSOLE_OUT -3 | |
58 | ||
59 | static int remote_fio_system_call_allowed = 0; | |
60 | ||
b803fb0f DJ |
61 | static struct async_signal_handler *sigint_fileio_token; |
62 | ||
449092f6 | 63 | static int |
cbcdb1f5 | 64 | remote_fileio_init_fd_map (void) |
449092f6 CV |
65 | { |
66 | int i; | |
67 | ||
68 | if (!remote_fio_data.fd_map) | |
69 | { | |
70 | remote_fio_data.fd_map = (int *) xmalloc (10 * sizeof (int)); | |
71 | remote_fio_data.fd_map_size = 10; | |
72 | remote_fio_data.fd_map[0] = FIO_FD_CONSOLE_IN; | |
73 | remote_fio_data.fd_map[1] = FIO_FD_CONSOLE_OUT; | |
74 | remote_fio_data.fd_map[2] = FIO_FD_CONSOLE_OUT; | |
75 | for (i = 3; i < 10; ++i) | |
76 | remote_fio_data.fd_map[i] = FIO_FD_INVALID; | |
77 | } | |
78 | return 3; | |
79 | } | |
80 | ||
81 | static int | |
cbcdb1f5 | 82 | remote_fileio_resize_fd_map (void) |
449092f6 | 83 | { |
9f8e6999 MG |
84 | int i = remote_fio_data.fd_map_size; |
85 | ||
449092f6 CV |
86 | if (!remote_fio_data.fd_map) |
87 | return remote_fileio_init_fd_map (); | |
88 | remote_fio_data.fd_map_size += 10; | |
89 | remote_fio_data.fd_map = | |
90 | (int *) xrealloc (remote_fio_data.fd_map, | |
91 | remote_fio_data.fd_map_size * sizeof (int)); | |
9f8e6999 MG |
92 | for (; i < remote_fio_data.fd_map_size; i++) |
93 | remote_fio_data.fd_map[i] = FIO_FD_INVALID; | |
449092f6 CV |
94 | return remote_fio_data.fd_map_size - 10; |
95 | } | |
96 | ||
97 | static int | |
cbcdb1f5 | 98 | remote_fileio_next_free_fd (void) |
449092f6 CV |
99 | { |
100 | int i; | |
101 | ||
102 | for (i = 0; i < remote_fio_data.fd_map_size; ++i) | |
103 | if (remote_fio_data.fd_map[i] == FIO_FD_INVALID) | |
104 | return i; | |
105 | return remote_fileio_resize_fd_map (); | |
106 | } | |
107 | ||
108 | static int | |
109 | remote_fileio_fd_to_targetfd (int fd) | |
110 | { | |
111 | int target_fd = remote_fileio_next_free_fd (); | |
112 | remote_fio_data.fd_map[target_fd] = fd; | |
113 | return target_fd; | |
114 | } | |
115 | ||
116 | static int | |
117 | remote_fileio_map_fd (int target_fd) | |
118 | { | |
119 | remote_fileio_init_fd_map (); | |
120 | if (target_fd < 0 || target_fd >= remote_fio_data.fd_map_size) | |
121 | return FIO_FD_INVALID; | |
122 | return remote_fio_data.fd_map[target_fd]; | |
123 | } | |
124 | ||
125 | static void | |
126 | remote_fileio_close_target_fd (int target_fd) | |
127 | { | |
128 | remote_fileio_init_fd_map (); | |
129 | if (target_fd >= 0 && target_fd < remote_fio_data.fd_map_size) | |
130 | remote_fio_data.fd_map[target_fd] = FIO_FD_INVALID; | |
131 | } | |
132 | ||
133 | static int | |
134 | remote_fileio_oflags_to_host (long flags) | |
135 | { | |
136 | int hflags = 0; | |
137 | ||
138 | if (flags & FILEIO_O_CREAT) | |
139 | hflags |= O_CREAT; | |
140 | if (flags & FILEIO_O_EXCL) | |
141 | hflags |= O_EXCL; | |
142 | if (flags & FILEIO_O_TRUNC) | |
143 | hflags |= O_TRUNC; | |
144 | if (flags & FILEIO_O_APPEND) | |
145 | hflags |= O_APPEND; | |
146 | if (flags & FILEIO_O_RDONLY) | |
147 | hflags |= O_RDONLY; | |
148 | if (flags & FILEIO_O_WRONLY) | |
149 | hflags |= O_WRONLY; | |
150 | if (flags & FILEIO_O_RDWR) | |
151 | hflags |= O_RDWR; | |
152 | /* On systems supporting binary and text mode, always open files in | |
153 | binary mode. */ | |
154 | #ifdef O_BINARY | |
155 | hflags |= O_BINARY; | |
156 | #endif | |
157 | return hflags; | |
158 | } | |
159 | ||
160 | static mode_t | |
161 | remote_fileio_mode_to_host (long mode, int open_call) | |
162 | { | |
163 | mode_t hmode = 0; | |
164 | ||
165 | if (!open_call) | |
166 | { | |
167 | if (mode & FILEIO_S_IFREG) | |
168 | hmode |= S_IFREG; | |
169 | if (mode & FILEIO_S_IFDIR) | |
170 | hmode |= S_IFDIR; | |
171 | if (mode & FILEIO_S_IFCHR) | |
172 | hmode |= S_IFCHR; | |
173 | } | |
174 | if (mode & FILEIO_S_IRUSR) | |
175 | hmode |= S_IRUSR; | |
176 | if (mode & FILEIO_S_IWUSR) | |
177 | hmode |= S_IWUSR; | |
178 | if (mode & FILEIO_S_IXUSR) | |
179 | hmode |= S_IXUSR; | |
9b265ec2 | 180 | #ifdef S_IRGRP |
449092f6 CV |
181 | if (mode & FILEIO_S_IRGRP) |
182 | hmode |= S_IRGRP; | |
9b265ec2 MM |
183 | #endif |
184 | #ifdef S_IWGRP | |
449092f6 CV |
185 | if (mode & FILEIO_S_IWGRP) |
186 | hmode |= S_IWGRP; | |
9b265ec2 MM |
187 | #endif |
188 | #ifdef S_IXGRP | |
449092f6 CV |
189 | if (mode & FILEIO_S_IXGRP) |
190 | hmode |= S_IXGRP; | |
9b265ec2 | 191 | #endif |
449092f6 CV |
192 | if (mode & FILEIO_S_IROTH) |
193 | hmode |= S_IROTH; | |
9b265ec2 | 194 | #ifdef S_IWOTH |
449092f6 CV |
195 | if (mode & FILEIO_S_IWOTH) |
196 | hmode |= S_IWOTH; | |
9b265ec2 MM |
197 | #endif |
198 | #ifdef S_IXOTH | |
449092f6 CV |
199 | if (mode & FILEIO_S_IXOTH) |
200 | hmode |= S_IXOTH; | |
9b265ec2 | 201 | #endif |
449092f6 CV |
202 | return hmode; |
203 | } | |
204 | ||
cbcdb1f5 | 205 | static LONGEST |
449092f6 CV |
206 | remote_fileio_mode_to_target (mode_t mode) |
207 | { | |
208 | mode_t tmode = 0; | |
209 | ||
9c7deb13 | 210 | if (S_ISREG(mode)) |
449092f6 | 211 | tmode |= FILEIO_S_IFREG; |
9c7deb13 | 212 | if (S_ISDIR(mode)) |
449092f6 | 213 | tmode |= FILEIO_S_IFDIR; |
9c7deb13 | 214 | if (S_ISCHR(mode)) |
449092f6 CV |
215 | tmode |= FILEIO_S_IFCHR; |
216 | if (mode & S_IRUSR) | |
217 | tmode |= FILEIO_S_IRUSR; | |
218 | if (mode & S_IWUSR) | |
219 | tmode |= FILEIO_S_IWUSR; | |
220 | if (mode & S_IXUSR) | |
221 | tmode |= FILEIO_S_IXUSR; | |
9b265ec2 | 222 | #ifdef S_IRGRP |
449092f6 CV |
223 | if (mode & S_IRGRP) |
224 | tmode |= FILEIO_S_IRGRP; | |
9b265ec2 MM |
225 | #endif |
226 | #ifdef S_IWRGRP | |
449092f6 CV |
227 | if (mode & S_IWGRP) |
228 | tmode |= FILEIO_S_IWGRP; | |
9b265ec2 MM |
229 | #endif |
230 | #ifdef S_IXGRP | |
449092f6 CV |
231 | if (mode & S_IXGRP) |
232 | tmode |= FILEIO_S_IXGRP; | |
9b265ec2 | 233 | #endif |
449092f6 CV |
234 | if (mode & S_IROTH) |
235 | tmode |= FILEIO_S_IROTH; | |
9b265ec2 | 236 | #ifdef S_IWOTH |
449092f6 CV |
237 | if (mode & S_IWOTH) |
238 | tmode |= FILEIO_S_IWOTH; | |
9b265ec2 MM |
239 | #endif |
240 | #ifdef S_IXOTH | |
449092f6 CV |
241 | if (mode & S_IXOTH) |
242 | tmode |= FILEIO_S_IXOTH; | |
9b265ec2 | 243 | #endif |
449092f6 CV |
244 | return tmode; |
245 | } | |
246 | ||
247 | static int | |
248 | remote_fileio_errno_to_target (int error) | |
249 | { | |
250 | switch (error) | |
251 | { | |
252 | case EPERM: | |
253 | return FILEIO_EPERM; | |
254 | case ENOENT: | |
255 | return FILEIO_ENOENT; | |
256 | case EINTR: | |
257 | return FILEIO_EINTR; | |
258 | case EIO: | |
259 | return FILEIO_EIO; | |
260 | case EBADF: | |
261 | return FILEIO_EBADF; | |
262 | case EACCES: | |
263 | return FILEIO_EACCES; | |
264 | case EFAULT: | |
265 | return FILEIO_EFAULT; | |
266 | case EBUSY: | |
267 | return FILEIO_EBUSY; | |
268 | case EEXIST: | |
269 | return FILEIO_EEXIST; | |
270 | case ENODEV: | |
271 | return FILEIO_ENODEV; | |
272 | case ENOTDIR: | |
273 | return FILEIO_ENOTDIR; | |
274 | case EISDIR: | |
275 | return FILEIO_EISDIR; | |
276 | case EINVAL: | |
277 | return FILEIO_EINVAL; | |
278 | case ENFILE: | |
279 | return FILEIO_ENFILE; | |
280 | case EMFILE: | |
281 | return FILEIO_EMFILE; | |
282 | case EFBIG: | |
283 | return FILEIO_EFBIG; | |
284 | case ENOSPC: | |
285 | return FILEIO_ENOSPC; | |
286 | case ESPIPE: | |
287 | return FILEIO_ESPIPE; | |
288 | case EROFS: | |
289 | return FILEIO_EROFS; | |
290 | case ENOSYS: | |
291 | return FILEIO_ENOSYS; | |
292 | case ENAMETOOLONG: | |
293 | return FILEIO_ENAMETOOLONG; | |
294 | } | |
295 | return FILEIO_EUNKNOWN; | |
296 | } | |
297 | ||
298 | static int | |
299 | remote_fileio_seek_flag_to_host (long num, int *flag) | |
300 | { | |
301 | if (!flag) | |
302 | return 0; | |
303 | switch (num) | |
304 | { | |
305 | case FILEIO_SEEK_SET: | |
306 | *flag = SEEK_SET; | |
307 | break; | |
308 | case FILEIO_SEEK_CUR: | |
309 | *flag = SEEK_CUR; | |
310 | break; | |
311 | case FILEIO_SEEK_END: | |
312 | *flag = SEEK_END; | |
313 | break; | |
314 | default: | |
315 | return -1; | |
316 | } | |
317 | return 0; | |
318 | } | |
319 | ||
320 | static int | |
cbcdb1f5 | 321 | remote_fileio_extract_long (char **buf, LONGEST *retlong) |
449092f6 CV |
322 | { |
323 | char *c; | |
324 | int sign = 1; | |
325 | ||
326 | if (!buf || !*buf || !**buf || !retlong) | |
327 | return -1; | |
328 | c = strchr (*buf, ','); | |
329 | if (c) | |
330 | *c++ = '\0'; | |
331 | else | |
332 | c = strchr (*buf, '\0'); | |
333 | while (strchr ("+-", **buf)) | |
334 | { | |
335 | if (**buf == '-') | |
336 | sign = -sign; | |
337 | ++*buf; | |
338 | } | |
339 | for (*retlong = 0; **buf; ++*buf) | |
340 | { | |
341 | *retlong <<= 4; | |
342 | if (**buf >= '0' && **buf <= '9') | |
343 | *retlong += **buf - '0'; | |
344 | else if (**buf >= 'a' && **buf <= 'f') | |
345 | *retlong += **buf - 'a' + 10; | |
346 | else if (**buf >= 'A' && **buf <= 'F') | |
347 | *retlong += **buf - 'A' + 10; | |
348 | else | |
349 | return -1; | |
350 | } | |
351 | *retlong *= sign; | |
352 | *buf = c; | |
353 | return 0; | |
354 | } | |
355 | ||
356 | static int | |
357 | remote_fileio_extract_int (char **buf, long *retint) | |
358 | { | |
359 | int ret; | |
cbcdb1f5 | 360 | LONGEST retlong; |
449092f6 CV |
361 | |
362 | if (!retint) | |
363 | return -1; | |
cbcdb1f5 CV |
364 | ret = remote_fileio_extract_long (buf, &retlong); |
365 | if (!ret) | |
449092f6 CV |
366 | *retint = (long) retlong; |
367 | return ret; | |
368 | } | |
369 | ||
370 | static int | |
371 | remote_fileio_extract_ptr_w_len (char **buf, CORE_ADDR *ptrval, int *length) | |
372 | { | |
373 | char *c; | |
cbcdb1f5 | 374 | LONGEST retlong; |
449092f6 CV |
375 | |
376 | if (!buf || !*buf || !**buf || !ptrval || !length) | |
377 | return -1; | |
378 | c = strchr (*buf, '/'); | |
379 | if (!c) | |
380 | return -1; | |
381 | *c++ = '\0'; | |
382 | if (remote_fileio_extract_long (buf, &retlong)) | |
383 | return -1; | |
384 | *ptrval = (CORE_ADDR) retlong; | |
385 | *buf = c; | |
386 | if (remote_fileio_extract_long (buf, &retlong)) | |
387 | return -1; | |
388 | *length = (int) retlong; | |
389 | return 0; | |
390 | } | |
391 | ||
392 | /* Convert to big endian */ | |
393 | static void | |
cbcdb1f5 | 394 | remote_fileio_to_be (LONGEST num, char *buf, int bytes) |
449092f6 CV |
395 | { |
396 | int i; | |
397 | ||
398 | for (i = 0; i < bytes; ++i) | |
399 | buf[i] = (num >> (8 * (bytes - i - 1))) & 0xff; | |
400 | } | |
401 | ||
449092f6 CV |
402 | static void |
403 | remote_fileio_to_fio_uint (long num, fio_uint_t fnum) | |
404 | { | |
cbcdb1f5 | 405 | remote_fileio_to_be ((LONGEST) num, (char *) fnum, 4); |
449092f6 CV |
406 | } |
407 | ||
408 | static void | |
409 | remote_fileio_to_fio_mode (mode_t num, fio_mode_t fnum) | |
410 | { | |
411 | remote_fileio_to_be (remote_fileio_mode_to_target(num), (char *) fnum, 4); | |
412 | } | |
413 | ||
414 | static void | |
415 | remote_fileio_to_fio_time (time_t num, fio_time_t fnum) | |
416 | { | |
cbcdb1f5 | 417 | remote_fileio_to_be ((LONGEST) num, (char *) fnum, 4); |
449092f6 CV |
418 | } |
419 | ||
420 | static void | |
cbcdb1f5 | 421 | remote_fileio_to_fio_long (LONGEST num, fio_long_t fnum) |
449092f6 CV |
422 | { |
423 | remote_fileio_to_be (num, (char *) fnum, 8); | |
424 | } | |
425 | ||
426 | static void | |
cbcdb1f5 | 427 | remote_fileio_to_fio_ulong (LONGEST num, fio_ulong_t fnum) |
449092f6 CV |
428 | { |
429 | remote_fileio_to_be (num, (char *) fnum, 8); | |
430 | } | |
431 | ||
432 | static void | |
433 | remote_fileio_to_fio_stat (struct stat *st, struct fio_stat *fst) | |
434 | { | |
d3ea6809 MM |
435 | LONGEST blksize; |
436 | ||
449092f6 CV |
437 | /* `st_dev' is set in the calling function */ |
438 | remote_fileio_to_fio_uint ((long) st->st_ino, fst->fst_ino); | |
439 | remote_fileio_to_fio_mode (st->st_mode, fst->fst_mode); | |
440 | remote_fileio_to_fio_uint ((long) st->st_nlink, fst->fst_nlink); | |
441 | remote_fileio_to_fio_uint ((long) st->st_uid, fst->fst_uid); | |
442 | remote_fileio_to_fio_uint ((long) st->st_gid, fst->fst_gid); | |
443 | remote_fileio_to_fio_uint ((long) st->st_rdev, fst->fst_rdev); | |
cbcdb1f5 | 444 | remote_fileio_to_fio_ulong ((LONGEST) st->st_size, fst->fst_size); |
d3ea6809 MM |
445 | #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE |
446 | blksize = st->st_blksize; | |
447 | #else | |
448 | blksize = 512; | |
449 | #endif | |
450 | remote_fileio_to_fio_ulong (blksize, fst->fst_blksize); | |
1dd727e9 | 451 | #if HAVE_STRUCT_STAT_ST_BLOCKS |
cbcdb1f5 | 452 | remote_fileio_to_fio_ulong ((LONGEST) st->st_blocks, fst->fst_blocks); |
1dd727e9 EZ |
453 | #else |
454 | /* FIXME: This is correct for DJGPP, but other systems that don't | |
455 | have st_blocks, if any, might prefer 512 instead of st_blksize. | |
456 | (eliz, 30-12-2003) */ | |
d3ea6809 MM |
457 | remote_fileio_to_fio_ulong (((LONGEST) st->st_size + blksize - 1) |
458 | / blksize, | |
1dd727e9 EZ |
459 | fst->fst_blocks); |
460 | #endif | |
449092f6 CV |
461 | remote_fileio_to_fio_time (st->st_atime, fst->fst_atime); |
462 | remote_fileio_to_fio_time (st->st_mtime, fst->fst_mtime); | |
463 | remote_fileio_to_fio_time (st->st_ctime, fst->fst_ctime); | |
464 | } | |
465 | ||
466 | static void | |
467 | remote_fileio_to_fio_timeval (struct timeval *tv, struct fio_timeval *ftv) | |
468 | { | |
469 | remote_fileio_to_fio_time (tv->tv_sec, ftv->ftv_sec); | |
470 | remote_fileio_to_fio_long (tv->tv_usec, ftv->ftv_usec); | |
471 | } | |
472 | ||
473 | static int remote_fio_ctrl_c_flag = 0; | |
474 | static int remote_fio_no_longjmp = 0; | |
449092f6 CV |
475 | |
476 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
477 | static struct sigaction remote_fio_sa; | |
478 | static struct sigaction remote_fio_osa; | |
479 | #else | |
480 | static void (*remote_fio_ofunc)(int); | |
481 | #endif | |
482 | ||
483 | static void | |
cbcdb1f5 | 484 | remote_fileio_sig_init (void) |
449092f6 CV |
485 | { |
486 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
487 | remote_fio_sa.sa_handler = SIG_IGN; | |
488 | sigemptyset (&remote_fio_sa.sa_mask); | |
489 | remote_fio_sa.sa_flags = 0; | |
490 | sigaction (SIGINT, &remote_fio_sa, &remote_fio_osa); | |
491 | #else | |
492 | remote_fio_ofunc = signal (SIGINT, SIG_IGN); | |
493 | #endif | |
494 | } | |
495 | ||
496 | static void | |
497 | remote_fileio_sig_set (void (*sigint_func)(int)) | |
498 | { | |
499 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
500 | remote_fio_sa.sa_handler = sigint_func; | |
501 | sigemptyset (&remote_fio_sa.sa_mask); | |
502 | remote_fio_sa.sa_flags = 0; | |
503 | sigaction (SIGINT, &remote_fio_sa, NULL); | |
504 | #else | |
505 | signal (SIGINT, sigint_func); | |
506 | #endif | |
507 | } | |
508 | ||
509 | static void | |
cbcdb1f5 | 510 | remote_fileio_sig_exit (void) |
449092f6 CV |
511 | { |
512 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
513 | sigaction (SIGINT, &remote_fio_osa, NULL); | |
514 | #else | |
515 | signal (SIGINT, remote_fio_ofunc); | |
516 | #endif | |
517 | } | |
518 | ||
b803fb0f DJ |
519 | static void |
520 | async_remote_fileio_interrupt (gdb_client_data arg) | |
521 | { | |
522 | deprecated_throw_reason (RETURN_QUIT); | |
523 | } | |
524 | ||
449092f6 CV |
525 | static void |
526 | remote_fileio_ctrl_c_signal_handler (int signo) | |
527 | { | |
528 | remote_fileio_sig_set (SIG_IGN); | |
529 | remote_fio_ctrl_c_flag = 1; | |
530 | if (!remote_fio_no_longjmp) | |
b803fb0f | 531 | gdb_call_async_signal_handler (sigint_fileio_token, 1); |
449092f6 CV |
532 | remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler); |
533 | } | |
534 | ||
535 | static void | |
536 | remote_fileio_reply (int retcode, int error) | |
537 | { | |
538 | char buf[32]; | |
539 | ||
540 | remote_fileio_sig_set (SIG_IGN); | |
541 | strcpy (buf, "F"); | |
542 | if (retcode < 0) | |
543 | { | |
544 | strcat (buf, "-"); | |
545 | retcode = -retcode; | |
546 | } | |
547 | sprintf (buf + strlen (buf), "%x", retcode); | |
548 | if (error || remote_fio_ctrl_c_flag) | |
549 | { | |
550 | if (error && remote_fio_ctrl_c_flag) | |
551 | error = FILEIO_EINTR; | |
552 | if (error < 0) | |
553 | { | |
554 | strcat (buf, "-"); | |
555 | error = -error; | |
556 | } | |
557 | sprintf (buf + strlen (buf), ",%x", error); | |
558 | if (remote_fio_ctrl_c_flag) | |
559 | strcat (buf, ",C"); | |
560 | } | |
561 | remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler); | |
562 | putpkt (buf); | |
563 | } | |
564 | ||
565 | static void | |
cbcdb1f5 | 566 | remote_fileio_ioerror (void) |
449092f6 CV |
567 | { |
568 | remote_fileio_reply (-1, FILEIO_EIO); | |
569 | } | |
570 | ||
571 | static void | |
cbcdb1f5 | 572 | remote_fileio_badfd (void) |
449092f6 CV |
573 | { |
574 | remote_fileio_reply (-1, FILEIO_EBADF); | |
575 | } | |
576 | ||
577 | static void | |
578 | remote_fileio_return_errno (int retcode) | |
579 | { | |
580 | remote_fileio_reply (retcode, | |
581 | retcode < 0 ? remote_fileio_errno_to_target (errno) : 0); | |
582 | } | |
583 | ||
584 | static void | |
585 | remote_fileio_return_success (int retcode) | |
586 | { | |
587 | remote_fileio_reply (retcode, 0); | |
588 | } | |
589 | ||
590 | /* Wrapper function for remote_write_bytes() which has the disadvantage to | |
591 | write only one packet, regardless of the requested number of bytes to | |
592 | transfer. This wrapper calls remote_write_bytes() as often as needed. */ | |
593 | static int | |
cfd77fa1 | 594 | remote_fileio_write_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
449092f6 CV |
595 | { |
596 | int ret = 0, written; | |
597 | ||
598 | while (len > 0 && (written = remote_write_bytes (memaddr, myaddr, len)) > 0) | |
599 | { | |
600 | len -= written; | |
601 | memaddr += written; | |
602 | myaddr += written; | |
603 | ret += written; | |
604 | } | |
605 | return ret; | |
606 | } | |
607 | ||
608 | static void | |
609 | remote_fileio_func_open (char *buf) | |
610 | { | |
611 | CORE_ADDR ptrval; | |
612 | int length, retlength; | |
613 | long num; | |
614 | int flags, fd; | |
615 | mode_t mode; | |
616 | char *pathname; | |
617 | struct stat st; | |
618 | ||
619 | /* 1. Parameter: Ptr to pathname / length incl. trailing zero */ | |
620 | if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length)) | |
621 | { | |
622 | remote_fileio_ioerror (); | |
623 | return; | |
624 | } | |
625 | /* 2. Parameter: open flags */ | |
626 | if (remote_fileio_extract_int (&buf, &num)) | |
627 | { | |
628 | remote_fileio_ioerror (); | |
629 | return; | |
630 | } | |
631 | flags = remote_fileio_oflags_to_host (num); | |
632 | /* 3. Parameter: open mode */ | |
633 | if (remote_fileio_extract_int (&buf, &num)) | |
634 | { | |
635 | remote_fileio_ioerror (); | |
636 | return; | |
637 | } | |
638 | mode = remote_fileio_mode_to_host (num, 1); | |
639 | ||
640 | /* Request pathname using 'm' packet */ | |
641 | pathname = alloca (length); | |
cfd77fa1 | 642 | retlength = remote_read_bytes (ptrval, (gdb_byte *) pathname, length); |
449092f6 CV |
643 | if (retlength != length) |
644 | { | |
645 | remote_fileio_ioerror (); | |
646 | return; | |
647 | } | |
648 | ||
649 | /* Check if pathname exists and is not a regular file or directory. If so, | |
650 | return an appropriate error code. Same for trying to open directories | |
651 | for writing. */ | |
652 | if (!stat (pathname, &st)) | |
653 | { | |
654 | if (!S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode)) | |
655 | { | |
656 | remote_fileio_reply (-1, FILEIO_ENODEV); | |
657 | return; | |
658 | } | |
659 | if (S_ISDIR (st.st_mode) | |
660 | && ((flags & O_WRONLY) == O_WRONLY || (flags & O_RDWR) == O_RDWR)) | |
661 | { | |
662 | remote_fileio_reply (-1, FILEIO_EISDIR); | |
663 | return; | |
664 | } | |
665 | } | |
666 | ||
667 | remote_fio_no_longjmp = 1; | |
668 | fd = open (pathname, flags, mode); | |
669 | if (fd < 0) | |
670 | { | |
671 | remote_fileio_return_errno (-1); | |
672 | return; | |
673 | } | |
674 | ||
675 | fd = remote_fileio_fd_to_targetfd (fd); | |
676 | remote_fileio_return_success (fd); | |
677 | } | |
678 | ||
679 | static void | |
680 | remote_fileio_func_close (char *buf) | |
681 | { | |
682 | long num; | |
683 | int fd; | |
684 | ||
685 | /* Parameter: file descriptor */ | |
686 | if (remote_fileio_extract_int (&buf, &num)) | |
687 | { | |
688 | remote_fileio_ioerror (); | |
689 | return; | |
690 | } | |
cbcdb1f5 CV |
691 | fd = remote_fileio_map_fd ((int) num); |
692 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
693 | { |
694 | remote_fileio_badfd (); | |
695 | return; | |
696 | } | |
697 | ||
698 | remote_fio_no_longjmp = 1; | |
699 | if (fd != FIO_FD_CONSOLE_IN && fd != FIO_FD_CONSOLE_OUT && close (fd)) | |
700 | remote_fileio_return_errno (-1); | |
701 | remote_fileio_close_target_fd ((int) num); | |
702 | remote_fileio_return_success (0); | |
703 | } | |
704 | ||
705 | static void | |
706 | remote_fileio_func_read (char *buf) | |
707 | { | |
708 | long target_fd, num; | |
cbcdb1f5 | 709 | LONGEST lnum; |
449092f6 CV |
710 | CORE_ADDR ptrval; |
711 | int fd, ret, retlength; | |
cfd77fa1 | 712 | gdb_byte *buffer; |
449092f6 CV |
713 | size_t length; |
714 | off_t old_offset, new_offset; | |
715 | ||
716 | /* 1. Parameter: file descriptor */ | |
717 | if (remote_fileio_extract_int (&buf, &target_fd)) | |
718 | { | |
719 | remote_fileio_ioerror (); | |
720 | return; | |
721 | } | |
cbcdb1f5 CV |
722 | fd = remote_fileio_map_fd ((int) target_fd); |
723 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
724 | { |
725 | remote_fileio_badfd (); | |
726 | return; | |
727 | } | |
728 | /* 2. Parameter: buffer pointer */ | |
729 | if (remote_fileio_extract_long (&buf, &lnum)) | |
730 | { | |
731 | remote_fileio_ioerror (); | |
732 | return; | |
733 | } | |
734 | ptrval = (CORE_ADDR) lnum; | |
735 | /* 3. Parameter: buffer length */ | |
736 | if (remote_fileio_extract_int (&buf, &num)) | |
737 | { | |
738 | remote_fileio_ioerror (); | |
739 | return; | |
740 | } | |
741 | length = (size_t) num; | |
742 | ||
743 | switch (fd) | |
744 | { | |
745 | case FIO_FD_CONSOLE_OUT: | |
746 | remote_fileio_badfd (); | |
747 | return; | |
748 | case FIO_FD_CONSOLE_IN: | |
749 | { | |
750 | static char *remaining_buf = NULL; | |
751 | static int remaining_length = 0; | |
752 | ||
b86ab4ff | 753 | buffer = (gdb_byte *) xmalloc (16384); |
449092f6 CV |
754 | if (remaining_buf) |
755 | { | |
756 | remote_fio_no_longjmp = 1; | |
757 | if (remaining_length > length) | |
758 | { | |
759 | memcpy (buffer, remaining_buf, length); | |
760 | memmove (remaining_buf, remaining_buf + length, | |
761 | remaining_length - length); | |
762 | remaining_length -= length; | |
763 | ret = length; | |
764 | } | |
765 | else | |
766 | { | |
767 | memcpy (buffer, remaining_buf, remaining_length); | |
768 | xfree (remaining_buf); | |
769 | remaining_buf = NULL; | |
770 | ret = remaining_length; | |
771 | } | |
772 | } | |
773 | else | |
774 | { | |
b86ab4ff DJ |
775 | /* Windows (at least XP and Server 2003) has difficulty |
776 | with large reads from consoles. If a handle is | |
777 | backed by a real console device, overly large reads | |
778 | from the handle will fail and set errno == ENOMEM. | |
779 | On a Windows Server 2003 system where I tested, | |
780 | reading 26608 bytes from the console was OK, but | |
781 | anything above 26609 bytes would fail. The limit has | |
782 | been observed to vary on different systems. So, we | |
783 | limit this read to something smaller than that - by a | |
784 | safe margin, in case the limit depends on system | |
785 | resources or version. */ | |
786 | ret = ui_file_read (gdb_stdtargin, (char *) buffer, 16383); | |
449092f6 CV |
787 | remote_fio_no_longjmp = 1; |
788 | if (ret > 0 && (size_t)ret > length) | |
789 | { | |
790 | remaining_buf = (char *) xmalloc (ret - length); | |
791 | remaining_length = ret - length; | |
792 | memcpy (remaining_buf, buffer + length, remaining_length); | |
793 | ret = length; | |
794 | } | |
795 | } | |
796 | } | |
797 | break; | |
798 | default: | |
cfd77fa1 | 799 | buffer = (gdb_byte *) xmalloc (length); |
449092f6 CV |
800 | /* POSIX defines EINTR behaviour of read in a weird way. It's allowed |
801 | for read() to return -1 even if "some" bytes have been read. It | |
802 | has been corrected in SUSv2 but that doesn't help us much... | |
803 | Therefore a complete solution must check how many bytes have been | |
804 | read on EINTR to return a more reliable value to the target */ | |
805 | old_offset = lseek (fd, 0, SEEK_CUR); | |
806 | remote_fio_no_longjmp = 1; | |
807 | ret = read (fd, buffer, length); | |
808 | if (ret < 0 && errno == EINTR) | |
809 | { | |
810 | new_offset = lseek (fd, 0, SEEK_CUR); | |
811 | /* If some data has been read, return the number of bytes read. | |
812 | The Ctrl-C flag is set in remote_fileio_reply() anyway */ | |
813 | if (old_offset != new_offset) | |
814 | ret = new_offset - old_offset; | |
815 | } | |
816 | break; | |
817 | } | |
818 | ||
819 | if (ret > 0) | |
820 | { | |
821 | retlength = remote_fileio_write_bytes (ptrval, buffer, ret); | |
822 | if (retlength != ret) | |
823 | ret = -1; /* errno has been set to EIO in remote_fileio_write_bytes() */ | |
824 | } | |
825 | ||
826 | if (ret < 0) | |
827 | remote_fileio_return_errno (-1); | |
828 | else | |
829 | remote_fileio_return_success (ret); | |
830 | ||
831 | xfree (buffer); | |
832 | } | |
833 | ||
834 | static void | |
835 | remote_fileio_func_write (char *buf) | |
836 | { | |
837 | long target_fd, num; | |
cbcdb1f5 | 838 | LONGEST lnum; |
449092f6 CV |
839 | CORE_ADDR ptrval; |
840 | int fd, ret, retlength; | |
cfd77fa1 | 841 | gdb_byte *buffer; |
449092f6 CV |
842 | size_t length; |
843 | ||
844 | /* 1. Parameter: file descriptor */ | |
845 | if (remote_fileio_extract_int (&buf, &target_fd)) | |
846 | { | |
847 | remote_fileio_ioerror (); | |
848 | return; | |
849 | } | |
cbcdb1f5 CV |
850 | fd = remote_fileio_map_fd ((int) target_fd); |
851 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
852 | { |
853 | remote_fileio_badfd (); | |
854 | return; | |
855 | } | |
856 | /* 2. Parameter: buffer pointer */ | |
857 | if (remote_fileio_extract_long (&buf, &lnum)) | |
858 | { | |
859 | remote_fileio_ioerror (); | |
860 | return; | |
861 | } | |
862 | ptrval = (CORE_ADDR) lnum; | |
863 | /* 3. Parameter: buffer length */ | |
864 | if (remote_fileio_extract_int (&buf, &num)) | |
865 | { | |
866 | remote_fileio_ioerror (); | |
867 | return; | |
868 | } | |
869 | length = (size_t) num; | |
870 | ||
cfd77fa1 | 871 | buffer = (gdb_byte *) xmalloc (length); |
449092f6 CV |
872 | retlength = remote_read_bytes (ptrval, buffer, length); |
873 | if (retlength != length) | |
874 | { | |
875 | xfree (buffer); | |
876 | remote_fileio_ioerror (); | |
877 | return; | |
878 | } | |
879 | ||
880 | remote_fio_no_longjmp = 1; | |
881 | switch (fd) | |
882 | { | |
883 | case FIO_FD_CONSOLE_IN: | |
884 | remote_fileio_badfd (); | |
1ed489bd | 885 | xfree (buffer); |
449092f6 CV |
886 | return; |
887 | case FIO_FD_CONSOLE_OUT: | |
cfd77fa1 DJ |
888 | ui_file_write (target_fd == 1 ? gdb_stdtarg : gdb_stdtargerr, |
889 | (char *) buffer, length); | |
449092f6 CV |
890 | gdb_flush (target_fd == 1 ? gdb_stdtarg : gdb_stdtargerr); |
891 | ret = length; | |
892 | break; | |
893 | default: | |
894 | ret = write (fd, buffer, length); | |
895 | if (ret < 0 && errno == EACCES) | |
896 | errno = EBADF; /* Cygwin returns EACCESS when writing to a R/O file.*/ | |
897 | break; | |
898 | } | |
899 | ||
900 | if (ret < 0) | |
901 | remote_fileio_return_errno (-1); | |
902 | else | |
903 | remote_fileio_return_success (ret); | |
904 | ||
905 | xfree (buffer); | |
906 | } | |
907 | ||
908 | static void | |
909 | remote_fileio_func_lseek (char *buf) | |
910 | { | |
911 | long num; | |
cbcdb1f5 | 912 | LONGEST lnum; |
449092f6 CV |
913 | int fd, flag; |
914 | off_t offset, ret; | |
915 | ||
916 | /* 1. Parameter: file descriptor */ | |
917 | if (remote_fileio_extract_int (&buf, &num)) | |
918 | { | |
919 | remote_fileio_ioerror (); | |
920 | return; | |
921 | } | |
cbcdb1f5 CV |
922 | fd = remote_fileio_map_fd ((int) num); |
923 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
924 | { |
925 | remote_fileio_badfd (); | |
926 | return; | |
927 | } | |
928 | else if (fd == FIO_FD_CONSOLE_IN || fd == FIO_FD_CONSOLE_OUT) | |
929 | { | |
930 | remote_fileio_reply (-1, FILEIO_ESPIPE); | |
931 | return; | |
932 | } | |
933 | ||
934 | /* 2. Parameter: offset */ | |
935 | if (remote_fileio_extract_long (&buf, &lnum)) | |
936 | { | |
937 | remote_fileio_ioerror (); | |
938 | return; | |
939 | } | |
940 | offset = (off_t) lnum; | |
941 | /* 3. Parameter: flag */ | |
942 | if (remote_fileio_extract_int (&buf, &num)) | |
943 | { | |
944 | remote_fileio_ioerror (); | |
945 | return; | |
946 | } | |
947 | if (remote_fileio_seek_flag_to_host (num, &flag)) | |
948 | { | |
949 | remote_fileio_reply (-1, FILEIO_EINVAL); | |
950 | return; | |
951 | } | |
952 | ||
953 | remote_fio_no_longjmp = 1; | |
954 | ret = lseek (fd, offset, flag); | |
955 | ||
956 | if (ret == (off_t) -1) | |
957 | remote_fileio_return_errno (-1); | |
958 | else | |
959 | remote_fileio_return_success (ret); | |
960 | } | |
961 | ||
962 | static void | |
963 | remote_fileio_func_rename (char *buf) | |
964 | { | |
86cc68a8 NS |
965 | CORE_ADDR old_ptr, new_ptr; |
966 | int old_len, new_len, retlength; | |
449092f6 CV |
967 | char *oldpath, *newpath; |
968 | int ret, of, nf; | |
969 | struct stat ost, nst; | |
970 | ||
971 | /* 1. Parameter: Ptr to oldpath / length incl. trailing zero */ | |
86cc68a8 | 972 | if (remote_fileio_extract_ptr_w_len (&buf, &old_ptr, &old_len)) |
449092f6 CV |
973 | { |
974 | remote_fileio_ioerror (); | |
975 | return; | |
976 | } | |
86cc68a8 NS |
977 | |
978 | /* 2. Parameter: Ptr to newpath / length incl. trailing zero */ | |
979 | if (remote_fileio_extract_ptr_w_len (&buf, &new_ptr, &new_len)) | |
449092f6 CV |
980 | { |
981 | remote_fileio_ioerror (); | |
982 | return; | |
983 | } | |
86cc68a8 NS |
984 | |
985 | /* Request oldpath using 'm' packet */ | |
986 | oldpath = alloca (old_len); | |
987 | retlength = remote_read_bytes (old_ptr, (gdb_byte *) oldpath, old_len); | |
988 | if (retlength != old_len) | |
449092f6 CV |
989 | { |
990 | remote_fileio_ioerror (); | |
991 | return; | |
992 | } | |
86cc68a8 | 993 | |
449092f6 | 994 | /* Request newpath using 'm' packet */ |
86cc68a8 NS |
995 | newpath = alloca (new_len); |
996 | retlength = remote_read_bytes (new_ptr, (gdb_byte *) newpath, new_len); | |
997 | if (retlength != new_len) | |
449092f6 CV |
998 | { |
999 | remote_fileio_ioerror (); | |
1000 | return; | |
1001 | } | |
1002 | ||
1003 | /* Only operate on regular files and directories */ | |
cbcdb1f5 CV |
1004 | of = stat (oldpath, &ost); |
1005 | nf = stat (newpath, &nst); | |
1006 | if ((!of && !S_ISREG (ost.st_mode) && !S_ISDIR (ost.st_mode)) | |
1007 | || (!nf && !S_ISREG (nst.st_mode) && !S_ISDIR (nst.st_mode))) | |
449092f6 CV |
1008 | { |
1009 | remote_fileio_reply (-1, FILEIO_EACCES); | |
1010 | return; | |
1011 | } | |
1012 | ||
1013 | remote_fio_no_longjmp = 1; | |
1014 | ret = rename (oldpath, newpath); | |
1015 | ||
1016 | if (ret == -1) | |
1017 | { | |
1018 | /* Special case: newpath is a non-empty directory. Some systems | |
1019 | return ENOTEMPTY, some return EEXIST. We coerce that to be | |
1020 | always EEXIST. */ | |
1021 | if (errno == ENOTEMPTY) | |
1022 | errno = EEXIST; | |
1023 | #ifdef __CYGWIN__ | |
1024 | /* Workaround some Cygwin problems with correct errnos. */ | |
1025 | if (errno == EACCES) | |
1026 | { | |
1027 | if (!of && !nf && S_ISDIR (nst.st_mode)) | |
1028 | { | |
1029 | if (S_ISREG (ost.st_mode)) | |
1030 | errno = EISDIR; | |
1031 | else | |
1032 | { | |
d0d0ab16 CV |
1033 | char oldfullpath[PATH_MAX]; |
1034 | char newfullpath[PATH_MAX]; | |
449092f6 CV |
1035 | int len; |
1036 | ||
d0d0ab16 CV |
1037 | cygwin_conv_path (CCP_WIN_A_TO_POSIX, oldpath, oldfullpath, |
1038 | PATH_MAX); | |
1039 | cygwin_conv_path (CCP_WIN_A_TO_POSIX, newpath, newfullpath, | |
1040 | PATH_MAX); | |
449092f6 CV |
1041 | len = strlen (oldfullpath); |
1042 | if (newfullpath[len] == '/' | |
1043 | && !strncmp (oldfullpath, newfullpath, len)) | |
1044 | errno = EINVAL; | |
1045 | else | |
1046 | errno = EEXIST; | |
1047 | } | |
1048 | } | |
1049 | } | |
1050 | #endif | |
1051 | ||
1052 | remote_fileio_return_errno (-1); | |
1053 | } | |
1054 | else | |
1055 | remote_fileio_return_success (ret); | |
1056 | } | |
1057 | ||
1058 | static void | |
1059 | remote_fileio_func_unlink (char *buf) | |
1060 | { | |
1061 | CORE_ADDR ptrval; | |
1062 | int length, retlength; | |
1063 | char *pathname; | |
1064 | int ret; | |
1065 | struct stat st; | |
1066 | ||
1067 | /* Parameter: Ptr to pathname / length incl. trailing zero */ | |
1068 | if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length)) | |
1069 | { | |
1070 | remote_fileio_ioerror (); | |
1071 | return; | |
1072 | } | |
1073 | /* Request pathname using 'm' packet */ | |
1074 | pathname = alloca (length); | |
cfd77fa1 | 1075 | retlength = remote_read_bytes (ptrval, (gdb_byte *) pathname, length); |
449092f6 CV |
1076 | if (retlength != length) |
1077 | { | |
1078 | remote_fileio_ioerror (); | |
1079 | return; | |
1080 | } | |
1081 | ||
1082 | /* Only operate on regular files (and directories, which allows to return | |
1083 | the correct return code) */ | |
1084 | if (!stat (pathname, &st) && !S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode)) | |
1085 | { | |
1086 | remote_fileio_reply (-1, FILEIO_ENODEV); | |
1087 | return; | |
1088 | } | |
1089 | ||
1090 | remote_fio_no_longjmp = 1; | |
1091 | ret = unlink (pathname); | |
1092 | ||
1093 | if (ret == -1) | |
1094 | remote_fileio_return_errno (-1); | |
1095 | else | |
1096 | remote_fileio_return_success (ret); | |
1097 | } | |
1098 | ||
1099 | static void | |
1100 | remote_fileio_func_stat (char *buf) | |
1101 | { | |
86cc68a8 NS |
1102 | CORE_ADDR statptr, nameptr; |
1103 | int ret, namelength, retlength; | |
449092f6 | 1104 | char *pathname; |
cbcdb1f5 | 1105 | LONGEST lnum; |
449092f6 CV |
1106 | struct stat st; |
1107 | struct fio_stat fst; | |
1108 | ||
1109 | /* 1. Parameter: Ptr to pathname / length incl. trailing zero */ | |
86cc68a8 | 1110 | if (remote_fileio_extract_ptr_w_len (&buf, &nameptr, &namelength)) |
449092f6 CV |
1111 | { |
1112 | remote_fileio_ioerror (); | |
1113 | return; | |
1114 | } | |
86cc68a8 NS |
1115 | |
1116 | /* 2. Parameter: Ptr to struct stat */ | |
1117 | if (remote_fileio_extract_long (&buf, &lnum)) | |
449092f6 CV |
1118 | { |
1119 | remote_fileio_ioerror (); | |
1120 | return; | |
1121 | } | |
86cc68a8 NS |
1122 | statptr = (CORE_ADDR) lnum; |
1123 | ||
1124 | /* Request pathname using 'm' packet */ | |
1125 | pathname = alloca (namelength); | |
1126 | retlength = remote_read_bytes (nameptr, (gdb_byte *) pathname, namelength); | |
1127 | if (retlength != namelength) | |
449092f6 CV |
1128 | { |
1129 | remote_fileio_ioerror (); | |
1130 | return; | |
1131 | } | |
449092f6 CV |
1132 | |
1133 | remote_fio_no_longjmp = 1; | |
1134 | ret = stat (pathname, &st); | |
1135 | ||
1136 | if (ret == -1) | |
1137 | { | |
1138 | remote_fileio_return_errno (-1); | |
1139 | return; | |
1140 | } | |
1141 | /* Only operate on regular files and directories */ | |
1142 | if (!ret && !S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode)) | |
1143 | { | |
1144 | remote_fileio_reply (-1, FILEIO_EACCES); | |
1145 | return; | |
1146 | } | |
86cc68a8 | 1147 | if (statptr) |
449092f6 CV |
1148 | { |
1149 | remote_fileio_to_fio_stat (&st, &fst); | |
1150 | remote_fileio_to_fio_uint (0, fst.fst_dev); | |
1151 | ||
86cc68a8 NS |
1152 | retlength = remote_fileio_write_bytes (statptr, |
1153 | (gdb_byte *) &fst, sizeof fst); | |
449092f6 CV |
1154 | if (retlength != sizeof fst) |
1155 | { | |
1156 | remote_fileio_return_errno (-1); | |
1157 | return; | |
1158 | } | |
1159 | } | |
1160 | remote_fileio_return_success (ret); | |
1161 | } | |
1162 | ||
1163 | static void | |
1164 | remote_fileio_func_fstat (char *buf) | |
1165 | { | |
1166 | CORE_ADDR ptrval; | |
1167 | int fd, ret, retlength; | |
1168 | long target_fd; | |
cbcdb1f5 | 1169 | LONGEST lnum; |
449092f6 CV |
1170 | struct stat st; |
1171 | struct fio_stat fst; | |
1172 | struct timeval tv; | |
1173 | ||
1174 | /* 1. Parameter: file descriptor */ | |
1175 | if (remote_fileio_extract_int (&buf, &target_fd)) | |
1176 | { | |
1177 | remote_fileio_ioerror (); | |
1178 | return; | |
1179 | } | |
cbcdb1f5 CV |
1180 | fd = remote_fileio_map_fd ((int) target_fd); |
1181 | if (fd == FIO_FD_INVALID) | |
449092f6 CV |
1182 | { |
1183 | remote_fileio_badfd (); | |
1184 | return; | |
1185 | } | |
1186 | /* 2. Parameter: Ptr to struct stat */ | |
1187 | if (remote_fileio_extract_long (&buf, &lnum)) | |
1188 | { | |
1189 | remote_fileio_ioerror (); | |
1190 | return; | |
1191 | } | |
1192 | ptrval = (CORE_ADDR) lnum; | |
1193 | ||
1194 | remote_fio_no_longjmp = 1; | |
1195 | if (fd == FIO_FD_CONSOLE_IN || fd == FIO_FD_CONSOLE_OUT) | |
1196 | { | |
1197 | remote_fileio_to_fio_uint (1, fst.fst_dev); | |
1198 | st.st_mode = S_IFCHR | (fd == FIO_FD_CONSOLE_IN ? S_IRUSR : S_IWUSR); | |
1199 | st.st_nlink = 1; | |
d3ea6809 | 1200 | #ifdef HAVE_GETUID |
449092f6 | 1201 | st.st_uid = getuid (); |
d3ea6809 MM |
1202 | #else |
1203 | st.st_uid = 0; | |
1204 | #endif | |
1205 | #ifdef HAVE_GETGID | |
449092f6 | 1206 | st.st_gid = getgid (); |
d3ea6809 MM |
1207 | #else |
1208 | st.st_gid = 0; | |
1209 | #endif | |
449092f6 CV |
1210 | st.st_rdev = 0; |
1211 | st.st_size = 0; | |
d3ea6809 | 1212 | #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE |
449092f6 | 1213 | st.st_blksize = 512; |
d3ea6809 | 1214 | #endif |
1dd727e9 | 1215 | #if HAVE_STRUCT_STAT_ST_BLOCKS |
449092f6 | 1216 | st.st_blocks = 0; |
1dd727e9 | 1217 | #endif |
449092f6 CV |
1218 | if (!gettimeofday (&tv, NULL)) |
1219 | st.st_atime = st.st_mtime = st.st_ctime = tv.tv_sec; | |
1220 | else | |
1221 | st.st_atime = st.st_mtime = st.st_ctime = (time_t) 0; | |
1222 | ret = 0; | |
1223 | } | |
1224 | else | |
1225 | ret = fstat (fd, &st); | |
1226 | ||
1227 | if (ret == -1) | |
1228 | { | |
1229 | remote_fileio_return_errno (-1); | |
1230 | return; | |
1231 | } | |
1232 | if (ptrval) | |
1233 | { | |
1234 | remote_fileio_to_fio_stat (&st, &fst); | |
1235 | ||
cfd77fa1 | 1236 | retlength = remote_fileio_write_bytes (ptrval, (gdb_byte *) &fst, sizeof fst); |
449092f6 CV |
1237 | if (retlength != sizeof fst) |
1238 | { | |
1239 | remote_fileio_return_errno (-1); | |
1240 | return; | |
1241 | } | |
1242 | } | |
1243 | remote_fileio_return_success (ret); | |
1244 | } | |
1245 | ||
1246 | static void | |
1247 | remote_fileio_func_gettimeofday (char *buf) | |
1248 | { | |
cbcdb1f5 | 1249 | LONGEST lnum; |
449092f6 CV |
1250 | CORE_ADDR ptrval; |
1251 | int ret, retlength; | |
1252 | struct timeval tv; | |
1253 | struct fio_timeval ftv; | |
1254 | ||
1255 | /* 1. Parameter: struct timeval pointer */ | |
1256 | if (remote_fileio_extract_long (&buf, &lnum)) | |
1257 | { | |
1258 | remote_fileio_ioerror (); | |
1259 | return; | |
1260 | } | |
1261 | ptrval = (CORE_ADDR) lnum; | |
1262 | /* 2. Parameter: some pointer value... */ | |
1263 | if (remote_fileio_extract_long (&buf, &lnum)) | |
1264 | { | |
1265 | remote_fileio_ioerror (); | |
1266 | return; | |
1267 | } | |
1268 | /* ...which has to be NULL */ | |
1269 | if (lnum) | |
1270 | { | |
1271 | remote_fileio_reply (-1, FILEIO_EINVAL); | |
1272 | return; | |
1273 | } | |
1274 | ||
1275 | remote_fio_no_longjmp = 1; | |
1276 | ret = gettimeofday (&tv, NULL); | |
1277 | ||
1278 | if (ret == -1) | |
1279 | { | |
1280 | remote_fileio_return_errno (-1); | |
1281 | return; | |
1282 | } | |
1283 | ||
1284 | if (ptrval) | |
1285 | { | |
1286 | remote_fileio_to_fio_timeval (&tv, &ftv); | |
1287 | ||
cfd77fa1 | 1288 | retlength = remote_fileio_write_bytes (ptrval, (gdb_byte *) &ftv, sizeof ftv); |
449092f6 CV |
1289 | if (retlength != sizeof ftv) |
1290 | { | |
1291 | remote_fileio_return_errno (-1); | |
1292 | return; | |
1293 | } | |
1294 | } | |
1295 | remote_fileio_return_success (ret); | |
1296 | } | |
1297 | ||
1298 | static void | |
1299 | remote_fileio_func_isatty (char *buf) | |
1300 | { | |
1301 | long target_fd; | |
1302 | int fd; | |
1303 | ||
1304 | /* Parameter: file descriptor */ | |
1305 | if (remote_fileio_extract_int (&buf, &target_fd)) | |
1306 | { | |
1307 | remote_fileio_ioerror (); | |
1308 | return; | |
1309 | } | |
1310 | remote_fio_no_longjmp = 1; | |
1311 | fd = remote_fileio_map_fd ((int) target_fd); | |
1312 | remote_fileio_return_success (fd == FIO_FD_CONSOLE_IN || | |
1313 | fd == FIO_FD_CONSOLE_OUT ? 1 : 0); | |
1314 | } | |
1315 | ||
1316 | static void | |
1317 | remote_fileio_func_system (char *buf) | |
1318 | { | |
1319 | CORE_ADDR ptrval; | |
1320 | int ret, length, retlength; | |
5600ea19 | 1321 | char *cmdline = NULL; |
449092f6 CV |
1322 | |
1323 | /* Parameter: Ptr to commandline / length incl. trailing zero */ | |
1324 | if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length)) | |
1325 | { | |
1326 | remote_fileio_ioerror (); | |
1327 | return; | |
1328 | } | |
5600ea19 NS |
1329 | |
1330 | if (length) | |
449092f6 | 1331 | { |
5600ea19 NS |
1332 | /* Request commandline using 'm' packet */ |
1333 | cmdline = alloca (length); | |
1334 | retlength = remote_read_bytes (ptrval, (gdb_byte *) cmdline, length); | |
1335 | if (retlength != length) | |
1336 | { | |
1337 | remote_fileio_ioerror (); | |
1338 | return; | |
1339 | } | |
1340 | } | |
1341 | ||
1342 | /* Check if system(3) has been explicitely allowed using the | |
1343 | `set remote system-call-allowed 1' command. If length is 0, | |
1344 | indicating a NULL parameter to the system call, return zero to | |
1345 | indicate a shell is not available. Otherwise fail with EPERM. */ | |
1346 | if (!remote_fio_system_call_allowed) | |
1347 | { | |
1348 | if (!length) | |
1349 | remote_fileio_return_success (0); | |
1350 | else | |
1351 | remote_fileio_reply (-1, FILEIO_EPERM); | |
449092f6 CV |
1352 | return; |
1353 | } | |
1354 | ||
1355 | remote_fio_no_longjmp = 1; | |
1356 | ret = system (cmdline); | |
1357 | ||
5600ea19 NS |
1358 | if (!length) |
1359 | remote_fileio_return_success (ret); | |
1360 | else if (ret == -1) | |
449092f6 CV |
1361 | remote_fileio_return_errno (-1); |
1362 | else | |
1363 | remote_fileio_return_success (WEXITSTATUS (ret)); | |
1364 | } | |
1365 | ||
1366 | static struct { | |
1367 | char *name; | |
1368 | void (*func)(char *); | |
1369 | } remote_fio_func_map[] = { | |
d5d6fca5 DJ |
1370 | { "open", remote_fileio_func_open }, |
1371 | { "close", remote_fileio_func_close }, | |
1372 | { "read", remote_fileio_func_read }, | |
1373 | { "write", remote_fileio_func_write }, | |
1374 | { "lseek", remote_fileio_func_lseek }, | |
1375 | { "rename", remote_fileio_func_rename }, | |
1376 | { "unlink", remote_fileio_func_unlink }, | |
1377 | { "stat", remote_fileio_func_stat }, | |
1378 | { "fstat", remote_fileio_func_fstat }, | |
1379 | { "gettimeofday", remote_fileio_func_gettimeofday }, | |
1380 | { "isatty", remote_fileio_func_isatty }, | |
1381 | { "system", remote_fileio_func_system }, | |
1382 | { NULL, NULL } | |
449092f6 CV |
1383 | }; |
1384 | ||
1385 | static int | |
1386 | do_remote_fileio_request (struct ui_out *uiout, void *buf_arg) | |
1387 | { | |
1388 | char *buf = buf_arg; | |
1389 | char *c; | |
1390 | int idx; | |
1391 | ||
1392 | remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler); | |
1393 | ||
1394 | c = strchr (++buf, ','); | |
1395 | if (c) | |
1396 | *c++ = '\0'; | |
1397 | else | |
1398 | c = strchr (buf, '\0'); | |
1399 | for (idx = 0; remote_fio_func_map[idx].name; ++idx) | |
1400 | if (!strcmp (remote_fio_func_map[idx].name, buf)) | |
1401 | break; | |
1402 | if (!remote_fio_func_map[idx].name) /* ERROR: No such function. */ | |
1403 | return RETURN_ERROR; | |
1404 | remote_fio_func_map[idx].func (c); | |
1405 | return 0; | |
1406 | } | |
1407 | ||
ad9a8f3f NS |
1408 | /* Close any open descriptors, and reinitialize the file mapping. */ |
1409 | ||
1410 | void | |
1411 | remote_fileio_reset (void) | |
1412 | { | |
1413 | int ix; | |
1414 | ||
1415 | for (ix = 0; ix != remote_fio_data.fd_map_size; ix++) | |
1416 | { | |
1417 | int fd = remote_fio_data.fd_map[ix]; | |
1418 | ||
1419 | if (fd >= 0) | |
1420 | close (fd); | |
1421 | } | |
1422 | if (remote_fio_data.fd_map) | |
1423 | { | |
6c761d9c | 1424 | xfree (remote_fio_data.fd_map); |
ad9a8f3f NS |
1425 | remote_fio_data.fd_map = NULL; |
1426 | remote_fio_data.fd_map_size = 0; | |
1427 | } | |
1428 | } | |
1429 | ||
3a29589a DJ |
1430 | /* Handle a file I/O request. BUF points to the packet containing the |
1431 | request. CTRLC_PENDING_P should be nonzero if the target has not | |
1432 | acknowledged the Ctrl-C sent asynchronously earlier. */ | |
1433 | ||
449092f6 | 1434 | void |
3a29589a | 1435 | remote_fileio_request (char *buf, int ctrlc_pending_p) |
449092f6 CV |
1436 | { |
1437 | int ex; | |
1438 | ||
1439 | remote_fileio_sig_init (); | |
1440 | ||
3a29589a | 1441 | if (ctrlc_pending_p) |
449092f6 | 1442 | { |
3a29589a DJ |
1443 | /* If the target hasn't responded to the Ctrl-C sent |
1444 | asynchronously earlier, take this opportunity to send the | |
1445 | Ctrl-C synchronously. */ | |
1446 | remote_fio_ctrl_c_flag = 1; | |
1447 | remote_fio_no_longjmp = 0; | |
1448 | remote_fileio_reply (-1, FILEIO_EINTR); | |
1449 | } | |
1450 | else | |
1451 | { | |
1452 | remote_fio_ctrl_c_flag = 0; | |
1453 | remote_fio_no_longjmp = 0; | |
1454 | ||
1455 | ex = catch_exceptions (uiout, do_remote_fileio_request, (void *)buf, | |
1456 | RETURN_MASK_ALL); | |
1457 | switch (ex) | |
1458 | { | |
1459 | case RETURN_ERROR: | |
1460 | remote_fileio_reply (-1, FILEIO_ENOSYS); | |
1461 | break; | |
1462 | case RETURN_QUIT: | |
1463 | remote_fileio_reply (-1, FILEIO_EINTR); | |
1464 | break; | |
1465 | default: | |
1466 | break; | |
1467 | } | |
449092f6 CV |
1468 | } |
1469 | ||
1470 | remote_fileio_sig_exit (); | |
1471 | } | |
1472 | ||
1473 | static void | |
1474 | set_system_call_allowed (char *args, int from_tty) | |
1475 | { | |
1476 | if (args) | |
1477 | { | |
1478 | char *arg_end; | |
1479 | int val = strtoul (args, &arg_end, 10); | |
1480 | if (*args && *arg_end == '\0') | |
1481 | { | |
1482 | remote_fio_system_call_allowed = !!val; | |
1483 | return; | |
1484 | } | |
1485 | } | |
8a3fe4f8 | 1486 | error (_("Illegal argument for \"set remote system-call-allowed\" command")); |
449092f6 CV |
1487 | } |
1488 | ||
1489 | static void | |
1490 | show_system_call_allowed (char *args, int from_tty) | |
1491 | { | |
1492 | if (args) | |
8a3fe4f8 | 1493 | error (_("Garbage after \"show remote system-call-allowed\" command: `%s'"), args); |
449092f6 CV |
1494 | printf_unfiltered ("Calling host system(3) call from target is %sallowed\n", |
1495 | remote_fio_system_call_allowed ? "" : "not "); | |
1496 | } | |
1497 | ||
1498 | void | |
1499 | initialize_remote_fileio (struct cmd_list_element *remote_set_cmdlist, | |
1500 | struct cmd_list_element *remote_show_cmdlist) | |
1501 | { | |
b803fb0f DJ |
1502 | sigint_fileio_token = |
1503 | create_async_signal_handler (async_remote_fileio_interrupt, NULL); | |
1504 | ||
449092f6 CV |
1505 | add_cmd ("system-call-allowed", no_class, |
1506 | set_system_call_allowed, | |
1a966eab | 1507 | _("Set if the host system(3) call is allowed for the target."), |
449092f6 CV |
1508 | &remote_set_cmdlist); |
1509 | add_cmd ("system-call-allowed", no_class, | |
1510 | show_system_call_allowed, | |
1a966eab | 1511 | _("Show if the host system(3) call is allowed for the target."), |
449092f6 CV |
1512 | &remote_show_cmdlist); |
1513 | } |