1 /* Remote File-I/O communications
3 Copyright 2003 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
22 /* See the GDB User Guide for details of the GDB remote protocol. */
25 #include "gdb_string.h"
28 #include "gdb/fileio.h"
35 #include <sys/cygwin.h> /* For cygwin_conv_to_full_posix_path. */
44 #define FIO_FD_INVALID -1
45 #define FIO_FD_CONSOLE_IN -2
46 #define FIO_FD_CONSOLE_OUT -3
48 static int remote_fio_system_call_allowed = 0;
51 remote_fileio_init_fd_map ()
55 if (!remote_fio_data.fd_map)
57 remote_fio_data.fd_map = (int *) xmalloc (10 * sizeof (int));
58 remote_fio_data.fd_map_size = 10;
59 remote_fio_data.fd_map[0] = FIO_FD_CONSOLE_IN;
60 remote_fio_data.fd_map[1] = FIO_FD_CONSOLE_OUT;
61 remote_fio_data.fd_map[2] = FIO_FD_CONSOLE_OUT;
62 for (i = 3; i < 10; ++i)
63 remote_fio_data.fd_map[i] = FIO_FD_INVALID;
69 remote_fileio_resize_fd_map ()
71 if (!remote_fio_data.fd_map)
72 return remote_fileio_init_fd_map ();
73 remote_fio_data.fd_map_size += 10;
74 remote_fio_data.fd_map =
75 (int *) xrealloc (remote_fio_data.fd_map,
76 remote_fio_data.fd_map_size * sizeof (int));
77 return remote_fio_data.fd_map_size - 10;
81 remote_fileio_next_free_fd ()
85 for (i = 0; i < remote_fio_data.fd_map_size; ++i)
86 if (remote_fio_data.fd_map[i] == FIO_FD_INVALID)
88 return remote_fileio_resize_fd_map ();
92 remote_fileio_fd_to_targetfd (int fd)
94 int target_fd = remote_fileio_next_free_fd ();
95 remote_fio_data.fd_map[target_fd] = fd;
100 remote_fileio_map_fd (int target_fd)
102 remote_fileio_init_fd_map ();
103 if (target_fd < 0 || target_fd >= remote_fio_data.fd_map_size)
104 return FIO_FD_INVALID;
105 return remote_fio_data.fd_map[target_fd];
109 remote_fileio_close_target_fd (int target_fd)
111 remote_fileio_init_fd_map ();
112 if (target_fd >= 0 && target_fd < remote_fio_data.fd_map_size)
113 remote_fio_data.fd_map[target_fd] = FIO_FD_INVALID;
117 remote_fileio_oflags_to_host (long flags)
121 if (flags & FILEIO_O_CREAT)
123 if (flags & FILEIO_O_EXCL)
125 if (flags & FILEIO_O_TRUNC)
127 if (flags & FILEIO_O_APPEND)
129 if (flags & FILEIO_O_RDONLY)
131 if (flags & FILEIO_O_WRONLY)
133 if (flags & FILEIO_O_RDWR)
135 /* On systems supporting binary and text mode, always open files in
144 remote_fileio_mode_to_host (long mode, int open_call)
150 if (mode & FILEIO_S_IFREG)
152 if (mode & FILEIO_S_IFDIR)
154 if (mode & FILEIO_S_IFCHR)
157 if (mode & FILEIO_S_IRUSR)
159 if (mode & FILEIO_S_IWUSR)
161 if (mode & FILEIO_S_IXUSR)
163 if (mode & FILEIO_S_IRGRP)
165 if (mode & FILEIO_S_IWGRP)
167 if (mode & FILEIO_S_IXGRP)
169 if (mode & FILEIO_S_IROTH)
171 if (mode & FILEIO_S_IWOTH)
173 if (mode & FILEIO_S_IXOTH)
179 remote_fileio_mode_to_target (mode_t mode)
184 tmode |= FILEIO_S_IFREG;
186 tmode |= FILEIO_S_IFDIR;
188 tmode |= FILEIO_S_IFCHR;
190 tmode |= FILEIO_S_IRUSR;
192 tmode |= FILEIO_S_IWUSR;
194 tmode |= FILEIO_S_IXUSR;
196 tmode |= FILEIO_S_IRGRP;
198 tmode |= FILEIO_S_IWGRP;
200 tmode |= FILEIO_S_IXGRP;
202 tmode |= FILEIO_S_IROTH;
204 tmode |= FILEIO_S_IWOTH;
206 tmode |= FILEIO_S_IXOTH;
211 remote_fileio_errno_to_target (int error)
218 return FILEIO_ENOENT;
226 return FILEIO_EACCES;
228 return FILEIO_EFAULT;
232 return FILEIO_EEXIST;
234 return FILEIO_ENODEV;
236 return FILEIO_ENOTDIR;
238 return FILEIO_EISDIR;
240 return FILEIO_EINVAL;
242 return FILEIO_ENFILE;
244 return FILEIO_EMFILE;
248 return FILEIO_ENOSPC;
250 return FILEIO_ESPIPE;
254 return FILEIO_ENOSYS;
256 return FILEIO_ENAMETOOLONG;
258 return FILEIO_EUNKNOWN;
262 remote_fileio_seek_flag_to_host (long num, int *flag)
268 case FILEIO_SEEK_SET:
271 case FILEIO_SEEK_CUR:
274 case FILEIO_SEEK_END:
284 remote_fileio_extract_long (char **buf, long long *retlong)
289 if (!buf || !*buf || !**buf || !retlong)
291 c = strchr (*buf, ',');
295 c = strchr (*buf, '\0');
296 while (strchr ("+-", **buf))
302 for (*retlong = 0; **buf; ++*buf)
305 if (**buf >= '0' && **buf <= '9')
306 *retlong += **buf - '0';
307 else if (**buf >= 'a' && **buf <= 'f')
308 *retlong += **buf - 'a' + 10;
309 else if (**buf >= 'A' && **buf <= 'F')
310 *retlong += **buf - 'A' + 10;
320 remote_fileio_extract_int (char **buf, long *retint)
327 if (!(ret = remote_fileio_extract_long (buf, &retlong)))
328 *retint = (long) retlong;
333 remote_fileio_extract_ptr_w_len (char **buf, CORE_ADDR *ptrval, int *length)
338 if (!buf || !*buf || !**buf || !ptrval || !length)
340 c = strchr (*buf, '/');
344 if (remote_fileio_extract_long (buf, &retlong))
346 *ptrval = (CORE_ADDR) retlong;
348 if (remote_fileio_extract_long (buf, &retlong))
350 *length = (int) retlong;
354 /* Convert to big endian */
356 remote_fileio_to_be (long long num, char *buf, int bytes)
360 for (i = 0; i < bytes; ++i)
361 buf[i] = (num >> (8 * (bytes - i - 1))) & 0xff;
365 remote_fileio_to_fio_int (long num, fio_int_t fnum)
367 remote_fileio_to_be ((long long) num, (char *) fnum, 4);
371 remote_fileio_to_fio_uint (long num, fio_uint_t fnum)
373 remote_fileio_to_be ((long long) num, (char *) fnum, 4);
377 remote_fileio_to_fio_mode (mode_t num, fio_mode_t fnum)
379 remote_fileio_to_be (remote_fileio_mode_to_target(num), (char *) fnum, 4);
383 remote_fileio_to_fio_time (time_t num, fio_time_t fnum)
385 remote_fileio_to_be ((long long) num, (char *) fnum, 4);
389 remote_fileio_to_fio_long (long long num, fio_long_t fnum)
391 remote_fileio_to_be (num, (char *) fnum, 8);
395 remote_fileio_to_fio_ulong (long long num, fio_ulong_t fnum)
397 remote_fileio_to_be (num, (char *) fnum, 8);
401 remote_fileio_to_fio_stat (struct stat *st, struct fio_stat *fst)
403 /* `st_dev' is set in the calling function */
404 remote_fileio_to_fio_uint ((long) st->st_ino, fst->fst_ino);
405 remote_fileio_to_fio_mode (st->st_mode, fst->fst_mode);
406 remote_fileio_to_fio_uint ((long) st->st_nlink, fst->fst_nlink);
407 remote_fileio_to_fio_uint ((long) st->st_uid, fst->fst_uid);
408 remote_fileio_to_fio_uint ((long) st->st_gid, fst->fst_gid);
409 remote_fileio_to_fio_uint ((long) st->st_rdev, fst->fst_rdev);
410 remote_fileio_to_fio_ulong ((long long) st->st_size, fst->fst_size);
411 remote_fileio_to_fio_ulong ((long long) st->st_blksize, fst->fst_blksize);
412 remote_fileio_to_fio_ulong ((long long) st->st_blocks, fst->fst_blocks);
413 remote_fileio_to_fio_time (st->st_atime, fst->fst_atime);
414 remote_fileio_to_fio_time (st->st_mtime, fst->fst_mtime);
415 remote_fileio_to_fio_time (st->st_ctime, fst->fst_ctime);
419 remote_fileio_to_fio_timeval (struct timeval *tv, struct fio_timeval *ftv)
421 remote_fileio_to_fio_time (tv->tv_sec, ftv->ftv_sec);
422 remote_fileio_to_fio_long (tv->tv_usec, ftv->ftv_usec);
425 static int remote_fio_ctrl_c_flag = 0;
426 static int remote_fio_no_longjmp = 0;
428 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
429 static struct sigaction remote_fio_sa;
430 static struct sigaction remote_fio_osa;
432 static void (*remote_fio_ofunc)(int);
436 remote_fileio_sig_init ()
438 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
439 remote_fio_sa.sa_handler = SIG_IGN;
440 sigemptyset (&remote_fio_sa.sa_mask);
441 remote_fio_sa.sa_flags = 0;
442 sigaction (SIGINT, &remote_fio_sa, &remote_fio_osa);
444 remote_fio_ofunc = signal (SIGINT, SIG_IGN);
449 remote_fileio_sig_set (void (*sigint_func)(int))
451 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
452 remote_fio_sa.sa_handler = sigint_func;
453 sigemptyset (&remote_fio_sa.sa_mask);
454 remote_fio_sa.sa_flags = 0;
455 sigaction (SIGINT, &remote_fio_sa, NULL);
457 signal (SIGINT, sigint_func);
462 remote_fileio_sig_exit ()
464 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
465 sigaction (SIGINT, &remote_fio_osa, NULL);
467 signal (SIGINT, remote_fio_ofunc);
472 remote_fileio_ctrl_c_signal_handler (int signo)
474 remote_fileio_sig_set (SIG_IGN);
475 remote_fio_ctrl_c_flag = 1;
476 if (!remote_fio_no_longjmp)
477 throw_exception (RETURN_QUIT);
478 remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler);
482 remote_fileio_reply (int retcode, int error)
486 remote_fileio_sig_set (SIG_IGN);
493 sprintf (buf + strlen (buf), "%x", retcode);
494 if (error || remote_fio_ctrl_c_flag)
496 if (error && remote_fio_ctrl_c_flag)
497 error = FILEIO_EINTR;
503 sprintf (buf + strlen (buf), ",%x", error);
504 if (remote_fio_ctrl_c_flag)
507 remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler);
512 remote_fileio_ioerror ()
514 remote_fileio_reply (-1, FILEIO_EIO);
518 remote_fileio_badfd ()
520 remote_fileio_reply (-1, FILEIO_EBADF);
524 remote_fileio_return_errno (int retcode)
526 remote_fileio_reply (retcode,
527 retcode < 0 ? remote_fileio_errno_to_target (errno) : 0);
531 remote_fileio_return_success (int retcode)
533 remote_fileio_reply (retcode, 0);
536 /* Wrapper function for remote_write_bytes() which has the disadvantage to
537 write only one packet, regardless of the requested number of bytes to
538 transfer. This wrapper calls remote_write_bytes() as often as needed. */
540 remote_fileio_write_bytes (CORE_ADDR memaddr, char *myaddr, int len)
542 int ret = 0, written;
544 while (len > 0 && (written = remote_write_bytes (memaddr, myaddr, len)) > 0)
555 remote_fileio_func_open (char *buf)
558 int length, retlength;
565 /* 1. Parameter: Ptr to pathname / length incl. trailing zero */
566 if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length))
568 remote_fileio_ioerror ();
571 /* 2. Parameter: open flags */
572 if (remote_fileio_extract_int (&buf, &num))
574 remote_fileio_ioerror ();
577 flags = remote_fileio_oflags_to_host (num);
578 /* 3. Parameter: open mode */
579 if (remote_fileio_extract_int (&buf, &num))
581 remote_fileio_ioerror ();
584 mode = remote_fileio_mode_to_host (num, 1);
586 /* Request pathname using 'm' packet */
587 pathname = alloca (length);
588 retlength = remote_read_bytes (ptrval, pathname, length);
589 if (retlength != length)
591 remote_fileio_ioerror ();
595 /* Check if pathname exists and is not a regular file or directory. If so,
596 return an appropriate error code. Same for trying to open directories
598 if (!stat (pathname, &st))
600 if (!S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode))
602 remote_fileio_reply (-1, FILEIO_ENODEV);
605 if (S_ISDIR (st.st_mode)
606 && ((flags & O_WRONLY) == O_WRONLY || (flags & O_RDWR) == O_RDWR))
608 remote_fileio_reply (-1, FILEIO_EISDIR);
613 remote_fio_no_longjmp = 1;
614 fd = open (pathname, flags, mode);
617 remote_fileio_return_errno (-1);
621 fd = remote_fileio_fd_to_targetfd (fd);
622 remote_fileio_return_success (fd);
626 remote_fileio_func_close (char *buf)
631 /* Parameter: file descriptor */
632 if (remote_fileio_extract_int (&buf, &num))
634 remote_fileio_ioerror ();
637 if ((fd = remote_fileio_map_fd ((int) num)) == FIO_FD_INVALID)
639 remote_fileio_badfd ();
643 remote_fio_no_longjmp = 1;
644 if (fd != FIO_FD_CONSOLE_IN && fd != FIO_FD_CONSOLE_OUT && close (fd))
645 remote_fileio_return_errno (-1);
646 remote_fileio_close_target_fd ((int) num);
647 remote_fileio_return_success (0);
651 remote_fileio_func_read (char *buf)
656 int fd, ret, retlength;
659 off_t old_offset, new_offset;
661 /* 1. Parameter: file descriptor */
662 if (remote_fileio_extract_int (&buf, &target_fd))
664 remote_fileio_ioerror ();
667 if ((fd = remote_fileio_map_fd ((int) target_fd)) == FIO_FD_INVALID)
669 remote_fileio_badfd ();
672 /* 2. Parameter: buffer pointer */
673 if (remote_fileio_extract_long (&buf, &lnum))
675 remote_fileio_ioerror ();
678 ptrval = (CORE_ADDR) lnum;
679 /* 3. Parameter: buffer length */
680 if (remote_fileio_extract_int (&buf, &num))
682 remote_fileio_ioerror ();
685 length = (size_t) num;
689 case FIO_FD_CONSOLE_OUT:
690 remote_fileio_badfd ();
692 case FIO_FD_CONSOLE_IN:
694 static char *remaining_buf = NULL;
695 static int remaining_length = 0;
697 buffer = (char *) xmalloc (32768);
700 remote_fio_no_longjmp = 1;
701 if (remaining_length > length)
703 memcpy (buffer, remaining_buf, length);
704 memmove (remaining_buf, remaining_buf + length,
705 remaining_length - length);
706 remaining_length -= length;
711 memcpy (buffer, remaining_buf, remaining_length);
712 xfree (remaining_buf);
713 remaining_buf = NULL;
714 ret = remaining_length;
719 ret = ui_file_read (gdb_stdtargin, buffer, 32767);
720 remote_fio_no_longjmp = 1;
721 if (ret > 0 && (size_t)ret > length)
723 remaining_buf = (char *) xmalloc (ret - length);
724 remaining_length = ret - length;
725 memcpy (remaining_buf, buffer + length, remaining_length);
732 buffer = (char *) xmalloc (length);
733 /* POSIX defines EINTR behaviour of read in a weird way. It's allowed
734 for read() to return -1 even if "some" bytes have been read. It
735 has been corrected in SUSv2 but that doesn't help us much...
736 Therefore a complete solution must check how many bytes have been
737 read on EINTR to return a more reliable value to the target */
738 old_offset = lseek (fd, 0, SEEK_CUR);
739 remote_fio_no_longjmp = 1;
740 ret = read (fd, buffer, length);
741 if (ret < 0 && errno == EINTR)
743 new_offset = lseek (fd, 0, SEEK_CUR);
744 /* If some data has been read, return the number of bytes read.
745 The Ctrl-C flag is set in remote_fileio_reply() anyway */
746 if (old_offset != new_offset)
747 ret = new_offset - old_offset;
754 retlength = remote_fileio_write_bytes (ptrval, buffer, ret);
755 if (retlength != ret)
756 ret = -1; /* errno has been set to EIO in remote_fileio_write_bytes() */
760 remote_fileio_return_errno (-1);
762 remote_fileio_return_success (ret);
768 remote_fileio_func_write (char *buf)
773 int fd, ret, retlength;
777 /* 1. Parameter: file descriptor */
778 if (remote_fileio_extract_int (&buf, &target_fd))
780 remote_fileio_ioerror ();
783 if ((fd = remote_fileio_map_fd ((int) target_fd)) == FIO_FD_INVALID)
785 remote_fileio_badfd ();
788 /* 2. Parameter: buffer pointer */
789 if (remote_fileio_extract_long (&buf, &lnum))
791 remote_fileio_ioerror ();
794 ptrval = (CORE_ADDR) lnum;
795 /* 3. Parameter: buffer length */
796 if (remote_fileio_extract_int (&buf, &num))
798 remote_fileio_ioerror ();
801 length = (size_t) num;
803 buffer = (char *) xmalloc (length);
804 retlength = remote_read_bytes (ptrval, buffer, length);
805 if (retlength != length)
808 remote_fileio_ioerror ();
812 remote_fio_no_longjmp = 1;
815 case FIO_FD_CONSOLE_IN:
816 remote_fileio_badfd ();
818 case FIO_FD_CONSOLE_OUT:
819 ui_file_write (target_fd == 1 ? gdb_stdtarg : gdb_stdtargerr, buffer,
821 gdb_flush (target_fd == 1 ? gdb_stdtarg : gdb_stdtargerr);
825 ret = write (fd, buffer, length);
826 if (ret < 0 && errno == EACCES)
827 errno = EBADF; /* Cygwin returns EACCESS when writing to a R/O file.*/
832 remote_fileio_return_errno (-1);
834 remote_fileio_return_success (ret);
840 remote_fileio_func_lseek (char *buf)
847 /* 1. Parameter: file descriptor */
848 if (remote_fileio_extract_int (&buf, &num))
850 remote_fileio_ioerror ();
853 if ((fd = remote_fileio_map_fd ((int) num)) == FIO_FD_INVALID)
855 remote_fileio_badfd ();
858 else if (fd == FIO_FD_CONSOLE_IN || fd == FIO_FD_CONSOLE_OUT)
860 remote_fileio_reply (-1, FILEIO_ESPIPE);
864 /* 2. Parameter: offset */
865 if (remote_fileio_extract_long (&buf, &lnum))
867 remote_fileio_ioerror ();
870 offset = (off_t) lnum;
871 /* 3. Parameter: flag */
872 if (remote_fileio_extract_int (&buf, &num))
874 remote_fileio_ioerror ();
877 if (remote_fileio_seek_flag_to_host (num, &flag))
879 remote_fileio_reply (-1, FILEIO_EINVAL);
883 remote_fio_no_longjmp = 1;
884 ret = lseek (fd, offset, flag);
886 if (ret == (off_t) -1)
887 remote_fileio_return_errno (-1);
889 remote_fileio_return_success (ret);
893 remote_fileio_func_rename (char *buf)
896 int length, retlength;
897 char *oldpath, *newpath;
899 struct stat ost, nst;
901 /* 1. Parameter: Ptr to oldpath / length incl. trailing zero */
902 if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length))
904 remote_fileio_ioerror ();
907 /* Request oldpath using 'm' packet */
908 oldpath = alloca (length);
909 retlength = remote_read_bytes (ptrval, oldpath, length);
910 if (retlength != length)
912 remote_fileio_ioerror ();
915 /* 2. Parameter: Ptr to newpath / length incl. trailing zero */
916 if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length))
918 remote_fileio_ioerror ();
921 /* Request newpath using 'm' packet */
922 newpath = alloca (length);
923 retlength = remote_read_bytes (ptrval, newpath, length);
924 if (retlength != length)
926 remote_fileio_ioerror ();
930 /* Only operate on regular files and directories */
931 if ((!(of = stat (oldpath, &ost))
932 && !S_ISREG (ost.st_mode) && !S_ISDIR (ost.st_mode))
933 || (!(nf = stat (newpath, &nst))
934 && !S_ISREG (nst.st_mode) && !S_ISDIR (nst.st_mode)))
936 remote_fileio_reply (-1, FILEIO_EACCES);
940 remote_fio_no_longjmp = 1;
941 ret = rename (oldpath, newpath);
945 /* Special case: newpath is a non-empty directory. Some systems
946 return ENOTEMPTY, some return EEXIST. We coerce that to be
948 if (errno == ENOTEMPTY)
951 /* Workaround some Cygwin problems with correct errnos. */
954 if (!of && !nf && S_ISDIR (nst.st_mode))
956 if (S_ISREG (ost.st_mode))
960 char oldfullpath[PATH_MAX + 1];
961 char newfullpath[PATH_MAX + 1];
964 cygwin_conv_to_full_posix_path (oldpath, oldfullpath);
965 cygwin_conv_to_full_posix_path (newpath, newfullpath);
966 len = strlen (oldfullpath);
967 if (newfullpath[len] == '/'
968 && !strncmp (oldfullpath, newfullpath, len))
977 remote_fileio_return_errno (-1);
980 remote_fileio_return_success (ret);
984 remote_fileio_func_unlink (char *buf)
987 int length, retlength;
992 /* Parameter: Ptr to pathname / length incl. trailing zero */
993 if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length))
995 remote_fileio_ioerror ();
998 /* Request pathname using 'm' packet */
999 pathname = alloca (length);
1000 retlength = remote_read_bytes (ptrval, pathname, length);
1001 if (retlength != length)
1003 remote_fileio_ioerror ();
1007 /* Only operate on regular files (and directories, which allows to return
1008 the correct return code) */
1009 if (!stat (pathname, &st) && !S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode))
1011 remote_fileio_reply (-1, FILEIO_ENODEV);
1015 remote_fio_no_longjmp = 1;
1016 ret = unlink (pathname);
1019 remote_fileio_return_errno (-1);
1021 remote_fileio_return_success (ret);
1025 remote_fileio_func_stat (char *buf)
1028 int ret, length, retlength;
1032 struct fio_stat fst;
1034 /* 1. Parameter: Ptr to pathname / length incl. trailing zero */
1035 if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length))
1037 remote_fileio_ioerror ();
1040 /* Request pathname using 'm' packet */
1041 pathname = alloca (length);
1042 retlength = remote_read_bytes (ptrval, pathname, length);
1043 if (retlength != length)
1045 remote_fileio_ioerror ();
1049 /* 2. Parameter: Ptr to struct stat */
1050 if (remote_fileio_extract_long (&buf, &lnum))
1052 remote_fileio_ioerror ();
1055 ptrval = (CORE_ADDR) lnum;
1057 remote_fio_no_longjmp = 1;
1058 ret = stat (pathname, &st);
1062 remote_fileio_return_errno (-1);
1065 /* Only operate on regular files and directories */
1066 if (!ret && !S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode))
1068 remote_fileio_reply (-1, FILEIO_EACCES);
1073 remote_fileio_to_fio_stat (&st, &fst);
1074 remote_fileio_to_fio_uint (0, fst.fst_dev);
1076 retlength = remote_fileio_write_bytes (ptrval, (char *) &fst, sizeof fst);
1077 if (retlength != sizeof fst)
1079 remote_fileio_return_errno (-1);
1083 remote_fileio_return_success (ret);
1087 remote_fileio_func_fstat (char *buf)
1090 int fd, ret, retlength;
1094 struct fio_stat fst;
1097 /* 1. Parameter: file descriptor */
1098 if (remote_fileio_extract_int (&buf, &target_fd))
1100 remote_fileio_ioerror ();
1103 if ((fd = remote_fileio_map_fd ((int) target_fd)) == FIO_FD_INVALID)
1105 remote_fileio_badfd ();
1108 /* 2. Parameter: Ptr to struct stat */
1109 if (remote_fileio_extract_long (&buf, &lnum))
1111 remote_fileio_ioerror ();
1114 ptrval = (CORE_ADDR) lnum;
1116 remote_fio_no_longjmp = 1;
1117 if (fd == FIO_FD_CONSOLE_IN || fd == FIO_FD_CONSOLE_OUT)
1119 remote_fileio_to_fio_uint (1, fst.fst_dev);
1120 st.st_mode = S_IFCHR | (fd == FIO_FD_CONSOLE_IN ? S_IRUSR : S_IWUSR);
1122 st.st_uid = getuid ();
1123 st.st_gid = getgid ();
1126 st.st_blksize = 512;
1128 if (!gettimeofday (&tv, NULL))
1129 st.st_atime = st.st_mtime = st.st_ctime = tv.tv_sec;
1131 st.st_atime = st.st_mtime = st.st_ctime = (time_t) 0;
1135 ret = fstat (fd, &st);
1139 remote_fileio_return_errno (-1);
1144 remote_fileio_to_fio_stat (&st, &fst);
1146 retlength = remote_fileio_write_bytes (ptrval, (char *) &fst, sizeof fst);
1147 if (retlength != sizeof fst)
1149 remote_fileio_return_errno (-1);
1153 remote_fileio_return_success (ret);
1157 remote_fileio_func_gettimeofday (char *buf)
1163 struct fio_timeval ftv;
1165 /* 1. Parameter: struct timeval pointer */
1166 if (remote_fileio_extract_long (&buf, &lnum))
1168 remote_fileio_ioerror ();
1171 ptrval = (CORE_ADDR) lnum;
1172 /* 2. Parameter: some pointer value... */
1173 if (remote_fileio_extract_long (&buf, &lnum))
1175 remote_fileio_ioerror ();
1178 /* ...which has to be NULL */
1181 remote_fileio_reply (-1, FILEIO_EINVAL);
1185 remote_fio_no_longjmp = 1;
1186 ret = gettimeofday (&tv, NULL);
1190 remote_fileio_return_errno (-1);
1196 remote_fileio_to_fio_timeval (&tv, &ftv);
1198 retlength = remote_fileio_write_bytes (ptrval, (char *) &ftv, sizeof ftv);
1199 if (retlength != sizeof ftv)
1201 remote_fileio_return_errno (-1);
1205 remote_fileio_return_success (ret);
1209 remote_fileio_func_isatty (char *buf)
1214 /* Parameter: file descriptor */
1215 if (remote_fileio_extract_int (&buf, &target_fd))
1217 remote_fileio_ioerror ();
1220 remote_fio_no_longjmp = 1;
1221 fd = remote_fileio_map_fd ((int) target_fd);
1222 remote_fileio_return_success (fd == FIO_FD_CONSOLE_IN ||
1223 fd == FIO_FD_CONSOLE_OUT ? 1 : 0);
1227 remote_fileio_func_system (char *buf)
1230 int ret, length, retlength;
1233 /* Check if system(3) has been explicitely allowed using the
1234 `set remote system-call-allowed 1' command. If not, return
1236 if (!remote_fio_system_call_allowed)
1238 remote_fileio_reply (-1, FILEIO_EPERM);
1242 /* Parameter: Ptr to commandline / length incl. trailing zero */
1243 if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length))
1245 remote_fileio_ioerror ();
1248 /* Request commandline using 'm' packet */
1249 cmdline = alloca (length);
1250 retlength = remote_read_bytes (ptrval, cmdline, length);
1251 if (retlength != length)
1253 remote_fileio_ioerror ();
1257 remote_fio_no_longjmp = 1;
1258 ret = system (cmdline);
1261 remote_fileio_return_errno (-1);
1263 remote_fileio_return_success (WEXITSTATUS (ret));
1268 void (*func)(char *);
1269 } remote_fio_func_map[] = {
1270 "open", remote_fileio_func_open,
1271 "close", remote_fileio_func_close,
1272 "read", remote_fileio_func_read,
1273 "write", remote_fileio_func_write,
1274 "lseek", remote_fileio_func_lseek,
1275 "rename", remote_fileio_func_rename,
1276 "unlink", remote_fileio_func_unlink,
1277 "stat", remote_fileio_func_stat,
1278 "fstat", remote_fileio_func_fstat,
1279 "gettimeofday", remote_fileio_func_gettimeofday,
1280 "isatty", remote_fileio_func_isatty,
1281 "system", remote_fileio_func_system,
1286 do_remote_fileio_request (struct ui_out *uiout, void *buf_arg)
1288 char *buf = buf_arg;
1292 remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler);
1294 c = strchr (++buf, ',');
1298 c = strchr (buf, '\0');
1299 for (idx = 0; remote_fio_func_map[idx].name; ++idx)
1300 if (!strcmp (remote_fio_func_map[idx].name, buf))
1302 if (!remote_fio_func_map[idx].name) /* ERROR: No such function. */
1303 return RETURN_ERROR;
1304 remote_fio_func_map[idx].func (c);
1309 remote_fileio_request (char *buf)
1313 remote_fileio_sig_init ();
1315 remote_fio_ctrl_c_flag = 0;
1316 remote_fio_no_longjmp = 0;
1318 ex = catch_exceptions (uiout, do_remote_fileio_request, (void *)buf,
1319 NULL, RETURN_MASK_ALL);
1323 remote_fileio_reply (-1, FILEIO_ENOSYS);
1326 remote_fileio_reply (-1, FILEIO_EINTR);
1332 remote_fileio_sig_exit ();
1336 set_system_call_allowed (char *args, int from_tty)
1341 int val = strtoul (args, &arg_end, 10);
1342 if (*args && *arg_end == '\0')
1344 remote_fio_system_call_allowed = !!val;
1348 error ("Illegal argument for \"set remote system-call-allowed\" command");
1352 show_system_call_allowed (char *args, int from_tty)
1355 error ("Garbage after \"show remote system-call-allowed\" command: `%s'", args);
1356 printf_unfiltered ("Calling host system(3) call from target is %sallowed\n",
1357 remote_fio_system_call_allowed ? "" : "not ");
1361 initialize_remote_fileio (struct cmd_list_element *remote_set_cmdlist,
1362 struct cmd_list_element *remote_show_cmdlist)
1364 add_cmd ("system-call-allowed", no_class,
1365 set_system_call_allowed,
1366 "Set if the host system(3) call is allowed for the target.\n",
1367 &remote_set_cmdlist);
1368 add_cmd ("system-call-allowed", no_class,
1369 show_system_call_allowed,
1370 "Show if the host system(3) call is allowed for the target.\n",
1371 &remote_show_cmdlist);