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 (void)
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 (void)
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 (void)
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
, LONGEST
*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 ret
= remote_fileio_extract_long (buf
, &retlong
);
329 *retint
= (long) retlong
;
334 remote_fileio_extract_ptr_w_len (char **buf
, CORE_ADDR
*ptrval
, int *length
)
339 if (!buf
|| !*buf
|| !**buf
|| !ptrval
|| !length
)
341 c
= strchr (*buf
, '/');
345 if (remote_fileio_extract_long (buf
, &retlong
))
347 *ptrval
= (CORE_ADDR
) retlong
;
349 if (remote_fileio_extract_long (buf
, &retlong
))
351 *length
= (int) retlong
;
355 /* Convert to big endian */
357 remote_fileio_to_be (LONGEST num
, char *buf
, int bytes
)
361 for (i
= 0; i
< bytes
; ++i
)
362 buf
[i
] = (num
>> (8 * (bytes
- i
- 1))) & 0xff;
366 remote_fileio_to_fio_int (long num
, fio_int_t fnum
)
368 remote_fileio_to_be ((LONGEST
) num
, (char *) fnum
, 4);
372 remote_fileio_to_fio_uint (long num
, fio_uint_t fnum
)
374 remote_fileio_to_be ((LONGEST
) num
, (char *) fnum
, 4);
378 remote_fileio_to_fio_mode (mode_t num
, fio_mode_t fnum
)
380 remote_fileio_to_be (remote_fileio_mode_to_target(num
), (char *) fnum
, 4);
384 remote_fileio_to_fio_time (time_t num
, fio_time_t fnum
)
386 remote_fileio_to_be ((LONGEST
) num
, (char *) fnum
, 4);
390 remote_fileio_to_fio_long (LONGEST num
, fio_long_t fnum
)
392 remote_fileio_to_be (num
, (char *) fnum
, 8);
396 remote_fileio_to_fio_ulong (LONGEST num
, fio_ulong_t fnum
)
398 remote_fileio_to_be (num
, (char *) fnum
, 8);
402 remote_fileio_to_fio_stat (struct stat
*st
, struct fio_stat
*fst
)
404 /* `st_dev' is set in the calling function */
405 remote_fileio_to_fio_uint ((long) st
->st_ino
, fst
->fst_ino
);
406 remote_fileio_to_fio_mode (st
->st_mode
, fst
->fst_mode
);
407 remote_fileio_to_fio_uint ((long) st
->st_nlink
, fst
->fst_nlink
);
408 remote_fileio_to_fio_uint ((long) st
->st_uid
, fst
->fst_uid
);
409 remote_fileio_to_fio_uint ((long) st
->st_gid
, fst
->fst_gid
);
410 remote_fileio_to_fio_uint ((long) st
->st_rdev
, fst
->fst_rdev
);
411 remote_fileio_to_fio_ulong ((LONGEST
) st
->st_size
, fst
->fst_size
);
412 remote_fileio_to_fio_ulong ((LONGEST
) st
->st_blksize
, fst
->fst_blksize
);
413 remote_fileio_to_fio_ulong ((LONGEST
) st
->st_blocks
, fst
->fst_blocks
);
414 remote_fileio_to_fio_time (st
->st_atime
, fst
->fst_atime
);
415 remote_fileio_to_fio_time (st
->st_mtime
, fst
->fst_mtime
);
416 remote_fileio_to_fio_time (st
->st_ctime
, fst
->fst_ctime
);
420 remote_fileio_to_fio_timeval (struct timeval
*tv
, struct fio_timeval
*ftv
)
422 remote_fileio_to_fio_time (tv
->tv_sec
, ftv
->ftv_sec
);
423 remote_fileio_to_fio_long (tv
->tv_usec
, ftv
->ftv_usec
);
426 static int remote_fio_ctrl_c_flag
= 0;
427 static int remote_fio_no_longjmp
= 0;
429 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
430 static struct sigaction remote_fio_sa
;
431 static struct sigaction remote_fio_osa
;
433 static void (*remote_fio_ofunc
)(int);
437 remote_fileio_sig_init (void)
439 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
440 remote_fio_sa
.sa_handler
= SIG_IGN
;
441 sigemptyset (&remote_fio_sa
.sa_mask
);
442 remote_fio_sa
.sa_flags
= 0;
443 sigaction (SIGINT
, &remote_fio_sa
, &remote_fio_osa
);
445 remote_fio_ofunc
= signal (SIGINT
, SIG_IGN
);
450 remote_fileio_sig_set (void (*sigint_func
)(int))
452 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
453 remote_fio_sa
.sa_handler
= sigint_func
;
454 sigemptyset (&remote_fio_sa
.sa_mask
);
455 remote_fio_sa
.sa_flags
= 0;
456 sigaction (SIGINT
, &remote_fio_sa
, NULL
);
458 signal (SIGINT
, sigint_func
);
463 remote_fileio_sig_exit (void)
465 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
466 sigaction (SIGINT
, &remote_fio_osa
, NULL
);
468 signal (SIGINT
, remote_fio_ofunc
);
473 remote_fileio_ctrl_c_signal_handler (int signo
)
475 remote_fileio_sig_set (SIG_IGN
);
476 remote_fio_ctrl_c_flag
= 1;
477 if (!remote_fio_no_longjmp
)
478 throw_exception (RETURN_QUIT
);
479 remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler
);
483 remote_fileio_reply (int retcode
, int error
)
487 remote_fileio_sig_set (SIG_IGN
);
494 sprintf (buf
+ strlen (buf
), "%x", retcode
);
495 if (error
|| remote_fio_ctrl_c_flag
)
497 if (error
&& remote_fio_ctrl_c_flag
)
498 error
= FILEIO_EINTR
;
504 sprintf (buf
+ strlen (buf
), ",%x", error
);
505 if (remote_fio_ctrl_c_flag
)
508 remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler
);
513 remote_fileio_ioerror (void)
515 remote_fileio_reply (-1, FILEIO_EIO
);
519 remote_fileio_badfd (void)
521 remote_fileio_reply (-1, FILEIO_EBADF
);
525 remote_fileio_return_errno (int retcode
)
527 remote_fileio_reply (retcode
,
528 retcode
< 0 ? remote_fileio_errno_to_target (errno
) : 0);
532 remote_fileio_return_success (int retcode
)
534 remote_fileio_reply (retcode
, 0);
537 /* Wrapper function for remote_write_bytes() which has the disadvantage to
538 write only one packet, regardless of the requested number of bytes to
539 transfer. This wrapper calls remote_write_bytes() as often as needed. */
541 remote_fileio_write_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
)
543 int ret
= 0, written
;
545 while (len
> 0 && (written
= remote_write_bytes (memaddr
, myaddr
, len
)) > 0)
556 remote_fileio_func_open (char *buf
)
559 int length
, retlength
;
566 /* 1. Parameter: Ptr to pathname / length incl. trailing zero */
567 if (remote_fileio_extract_ptr_w_len (&buf
, &ptrval
, &length
))
569 remote_fileio_ioerror ();
572 /* 2. Parameter: open flags */
573 if (remote_fileio_extract_int (&buf
, &num
))
575 remote_fileio_ioerror ();
578 flags
= remote_fileio_oflags_to_host (num
);
579 /* 3. Parameter: open mode */
580 if (remote_fileio_extract_int (&buf
, &num
))
582 remote_fileio_ioerror ();
585 mode
= remote_fileio_mode_to_host (num
, 1);
587 /* Request pathname using 'm' packet */
588 pathname
= alloca (length
);
589 retlength
= remote_read_bytes (ptrval
, pathname
, length
);
590 if (retlength
!= length
)
592 remote_fileio_ioerror ();
596 /* Check if pathname exists and is not a regular file or directory. If so,
597 return an appropriate error code. Same for trying to open directories
599 if (!stat (pathname
, &st
))
601 if (!S_ISREG (st
.st_mode
) && !S_ISDIR (st
.st_mode
))
603 remote_fileio_reply (-1, FILEIO_ENODEV
);
606 if (S_ISDIR (st
.st_mode
)
607 && ((flags
& O_WRONLY
) == O_WRONLY
|| (flags
& O_RDWR
) == O_RDWR
))
609 remote_fileio_reply (-1, FILEIO_EISDIR
);
614 remote_fio_no_longjmp
= 1;
615 fd
= open (pathname
, flags
, mode
);
618 remote_fileio_return_errno (-1);
622 fd
= remote_fileio_fd_to_targetfd (fd
);
623 remote_fileio_return_success (fd
);
627 remote_fileio_func_close (char *buf
)
632 /* Parameter: file descriptor */
633 if (remote_fileio_extract_int (&buf
, &num
))
635 remote_fileio_ioerror ();
638 fd
= remote_fileio_map_fd ((int) num
);
639 if (fd
== FIO_FD_INVALID
)
641 remote_fileio_badfd ();
645 remote_fio_no_longjmp
= 1;
646 if (fd
!= FIO_FD_CONSOLE_IN
&& fd
!= FIO_FD_CONSOLE_OUT
&& close (fd
))
647 remote_fileio_return_errno (-1);
648 remote_fileio_close_target_fd ((int) num
);
649 remote_fileio_return_success (0);
653 remote_fileio_func_read (char *buf
)
658 int fd
, ret
, retlength
;
661 off_t old_offset
, new_offset
;
663 /* 1. Parameter: file descriptor */
664 if (remote_fileio_extract_int (&buf
, &target_fd
))
666 remote_fileio_ioerror ();
669 fd
= remote_fileio_map_fd ((int) target_fd
);
670 if (fd
== FIO_FD_INVALID
)
672 remote_fileio_badfd ();
675 /* 2. Parameter: buffer pointer */
676 if (remote_fileio_extract_long (&buf
, &lnum
))
678 remote_fileio_ioerror ();
681 ptrval
= (CORE_ADDR
) lnum
;
682 /* 3. Parameter: buffer length */
683 if (remote_fileio_extract_int (&buf
, &num
))
685 remote_fileio_ioerror ();
688 length
= (size_t) num
;
692 case FIO_FD_CONSOLE_OUT
:
693 remote_fileio_badfd ();
695 case FIO_FD_CONSOLE_IN
:
697 static char *remaining_buf
= NULL
;
698 static int remaining_length
= 0;
700 buffer
= (char *) xmalloc (32768);
703 remote_fio_no_longjmp
= 1;
704 if (remaining_length
> length
)
706 memcpy (buffer
, remaining_buf
, length
);
707 memmove (remaining_buf
, remaining_buf
+ length
,
708 remaining_length
- length
);
709 remaining_length
-= length
;
714 memcpy (buffer
, remaining_buf
, remaining_length
);
715 xfree (remaining_buf
);
716 remaining_buf
= NULL
;
717 ret
= remaining_length
;
722 ret
= ui_file_read (gdb_stdtargin
, buffer
, 32767);
723 remote_fio_no_longjmp
= 1;
724 if (ret
> 0 && (size_t)ret
> length
)
726 remaining_buf
= (char *) xmalloc (ret
- length
);
727 remaining_length
= ret
- length
;
728 memcpy (remaining_buf
, buffer
+ length
, remaining_length
);
735 buffer
= (char *) xmalloc (length
);
736 /* POSIX defines EINTR behaviour of read in a weird way. It's allowed
737 for read() to return -1 even if "some" bytes have been read. It
738 has been corrected in SUSv2 but that doesn't help us much...
739 Therefore a complete solution must check how many bytes have been
740 read on EINTR to return a more reliable value to the target */
741 old_offset
= lseek (fd
, 0, SEEK_CUR
);
742 remote_fio_no_longjmp
= 1;
743 ret
= read (fd
, buffer
, length
);
744 if (ret
< 0 && errno
== EINTR
)
746 new_offset
= lseek (fd
, 0, SEEK_CUR
);
747 /* If some data has been read, return the number of bytes read.
748 The Ctrl-C flag is set in remote_fileio_reply() anyway */
749 if (old_offset
!= new_offset
)
750 ret
= new_offset
- old_offset
;
757 retlength
= remote_fileio_write_bytes (ptrval
, buffer
, ret
);
758 if (retlength
!= ret
)
759 ret
= -1; /* errno has been set to EIO in remote_fileio_write_bytes() */
763 remote_fileio_return_errno (-1);
765 remote_fileio_return_success (ret
);
771 remote_fileio_func_write (char *buf
)
776 int fd
, ret
, retlength
;
780 /* 1. Parameter: file descriptor */
781 if (remote_fileio_extract_int (&buf
, &target_fd
))
783 remote_fileio_ioerror ();
786 fd
= remote_fileio_map_fd ((int) target_fd
);
787 if (fd
== FIO_FD_INVALID
)
789 remote_fileio_badfd ();
792 /* 2. Parameter: buffer pointer */
793 if (remote_fileio_extract_long (&buf
, &lnum
))
795 remote_fileio_ioerror ();
798 ptrval
= (CORE_ADDR
) lnum
;
799 /* 3. Parameter: buffer length */
800 if (remote_fileio_extract_int (&buf
, &num
))
802 remote_fileio_ioerror ();
805 length
= (size_t) num
;
807 buffer
= (char *) xmalloc (length
);
808 retlength
= remote_read_bytes (ptrval
, buffer
, length
);
809 if (retlength
!= length
)
812 remote_fileio_ioerror ();
816 remote_fio_no_longjmp
= 1;
819 case FIO_FD_CONSOLE_IN
:
820 remote_fileio_badfd ();
822 case FIO_FD_CONSOLE_OUT
:
823 ui_file_write (target_fd
== 1 ? gdb_stdtarg
: gdb_stdtargerr
, buffer
,
825 gdb_flush (target_fd
== 1 ? gdb_stdtarg
: gdb_stdtargerr
);
829 ret
= write (fd
, buffer
, length
);
830 if (ret
< 0 && errno
== EACCES
)
831 errno
= EBADF
; /* Cygwin returns EACCESS when writing to a R/O file.*/
836 remote_fileio_return_errno (-1);
838 remote_fileio_return_success (ret
);
844 remote_fileio_func_lseek (char *buf
)
851 /* 1. Parameter: file descriptor */
852 if (remote_fileio_extract_int (&buf
, &num
))
854 remote_fileio_ioerror ();
857 fd
= remote_fileio_map_fd ((int) num
);
858 if (fd
== FIO_FD_INVALID
)
860 remote_fileio_badfd ();
863 else if (fd
== FIO_FD_CONSOLE_IN
|| fd
== FIO_FD_CONSOLE_OUT
)
865 remote_fileio_reply (-1, FILEIO_ESPIPE
);
869 /* 2. Parameter: offset */
870 if (remote_fileio_extract_long (&buf
, &lnum
))
872 remote_fileio_ioerror ();
875 offset
= (off_t
) lnum
;
876 /* 3. Parameter: flag */
877 if (remote_fileio_extract_int (&buf
, &num
))
879 remote_fileio_ioerror ();
882 if (remote_fileio_seek_flag_to_host (num
, &flag
))
884 remote_fileio_reply (-1, FILEIO_EINVAL
);
888 remote_fio_no_longjmp
= 1;
889 ret
= lseek (fd
, offset
, flag
);
891 if (ret
== (off_t
) -1)
892 remote_fileio_return_errno (-1);
894 remote_fileio_return_success (ret
);
898 remote_fileio_func_rename (char *buf
)
901 int length
, retlength
;
902 char *oldpath
, *newpath
;
904 struct stat ost
, nst
;
906 /* 1. Parameter: Ptr to oldpath / length incl. trailing zero */
907 if (remote_fileio_extract_ptr_w_len (&buf
, &ptrval
, &length
))
909 remote_fileio_ioerror ();
912 /* Request oldpath using 'm' packet */
913 oldpath
= alloca (length
);
914 retlength
= remote_read_bytes (ptrval
, oldpath
, length
);
915 if (retlength
!= length
)
917 remote_fileio_ioerror ();
920 /* 2. Parameter: Ptr to newpath / length incl. trailing zero */
921 if (remote_fileio_extract_ptr_w_len (&buf
, &ptrval
, &length
))
923 remote_fileio_ioerror ();
926 /* Request newpath using 'm' packet */
927 newpath
= alloca (length
);
928 retlength
= remote_read_bytes (ptrval
, newpath
, length
);
929 if (retlength
!= length
)
931 remote_fileio_ioerror ();
935 /* Only operate on regular files and directories */
936 of
= stat (oldpath
, &ost
);
937 nf
= stat (newpath
, &nst
);
938 if ((!of
&& !S_ISREG (ost
.st_mode
) && !S_ISDIR (ost
.st_mode
))
939 || (!nf
&& !S_ISREG (nst
.st_mode
) && !S_ISDIR (nst
.st_mode
)))
941 remote_fileio_reply (-1, FILEIO_EACCES
);
945 remote_fio_no_longjmp
= 1;
946 ret
= rename (oldpath
, newpath
);
950 /* Special case: newpath is a non-empty directory. Some systems
951 return ENOTEMPTY, some return EEXIST. We coerce that to be
953 if (errno
== ENOTEMPTY
)
956 /* Workaround some Cygwin problems with correct errnos. */
959 if (!of
&& !nf
&& S_ISDIR (nst
.st_mode
))
961 if (S_ISREG (ost
.st_mode
))
965 char oldfullpath
[PATH_MAX
+ 1];
966 char newfullpath
[PATH_MAX
+ 1];
969 cygwin_conv_to_full_posix_path (oldpath
, oldfullpath
);
970 cygwin_conv_to_full_posix_path (newpath
, newfullpath
);
971 len
= strlen (oldfullpath
);
972 if (newfullpath
[len
] == '/'
973 && !strncmp (oldfullpath
, newfullpath
, len
))
982 remote_fileio_return_errno (-1);
985 remote_fileio_return_success (ret
);
989 remote_fileio_func_unlink (char *buf
)
992 int length
, retlength
;
997 /* Parameter: Ptr to pathname / length incl. trailing zero */
998 if (remote_fileio_extract_ptr_w_len (&buf
, &ptrval
, &length
))
1000 remote_fileio_ioerror ();
1003 /* Request pathname using 'm' packet */
1004 pathname
= alloca (length
);
1005 retlength
= remote_read_bytes (ptrval
, pathname
, length
);
1006 if (retlength
!= length
)
1008 remote_fileio_ioerror ();
1012 /* Only operate on regular files (and directories, which allows to return
1013 the correct return code) */
1014 if (!stat (pathname
, &st
) && !S_ISREG (st
.st_mode
) && !S_ISDIR (st
.st_mode
))
1016 remote_fileio_reply (-1, FILEIO_ENODEV
);
1020 remote_fio_no_longjmp
= 1;
1021 ret
= unlink (pathname
);
1024 remote_fileio_return_errno (-1);
1026 remote_fileio_return_success (ret
);
1030 remote_fileio_func_stat (char *buf
)
1033 int ret
, length
, retlength
;
1037 struct fio_stat fst
;
1039 /* 1. Parameter: Ptr to pathname / length incl. trailing zero */
1040 if (remote_fileio_extract_ptr_w_len (&buf
, &ptrval
, &length
))
1042 remote_fileio_ioerror ();
1045 /* Request pathname using 'm' packet */
1046 pathname
= alloca (length
);
1047 retlength
= remote_read_bytes (ptrval
, pathname
, length
);
1048 if (retlength
!= length
)
1050 remote_fileio_ioerror ();
1054 /* 2. Parameter: Ptr to struct stat */
1055 if (remote_fileio_extract_long (&buf
, &lnum
))
1057 remote_fileio_ioerror ();
1060 ptrval
= (CORE_ADDR
) lnum
;
1062 remote_fio_no_longjmp
= 1;
1063 ret
= stat (pathname
, &st
);
1067 remote_fileio_return_errno (-1);
1070 /* Only operate on regular files and directories */
1071 if (!ret
&& !S_ISREG (st
.st_mode
) && !S_ISDIR (st
.st_mode
))
1073 remote_fileio_reply (-1, FILEIO_EACCES
);
1078 remote_fileio_to_fio_stat (&st
, &fst
);
1079 remote_fileio_to_fio_uint (0, fst
.fst_dev
);
1081 retlength
= remote_fileio_write_bytes (ptrval
, (char *) &fst
, sizeof fst
);
1082 if (retlength
!= sizeof fst
)
1084 remote_fileio_return_errno (-1);
1088 remote_fileio_return_success (ret
);
1092 remote_fileio_func_fstat (char *buf
)
1095 int fd
, ret
, retlength
;
1099 struct fio_stat fst
;
1102 /* 1. Parameter: file descriptor */
1103 if (remote_fileio_extract_int (&buf
, &target_fd
))
1105 remote_fileio_ioerror ();
1108 fd
= remote_fileio_map_fd ((int) target_fd
);
1109 if (fd
== FIO_FD_INVALID
)
1111 remote_fileio_badfd ();
1114 /* 2. Parameter: Ptr to struct stat */
1115 if (remote_fileio_extract_long (&buf
, &lnum
))
1117 remote_fileio_ioerror ();
1120 ptrval
= (CORE_ADDR
) lnum
;
1122 remote_fio_no_longjmp
= 1;
1123 if (fd
== FIO_FD_CONSOLE_IN
|| fd
== FIO_FD_CONSOLE_OUT
)
1125 remote_fileio_to_fio_uint (1, fst
.fst_dev
);
1126 st
.st_mode
= S_IFCHR
| (fd
== FIO_FD_CONSOLE_IN
? S_IRUSR
: S_IWUSR
);
1128 st
.st_uid
= getuid ();
1129 st
.st_gid
= getgid ();
1132 st
.st_blksize
= 512;
1134 if (!gettimeofday (&tv
, NULL
))
1135 st
.st_atime
= st
.st_mtime
= st
.st_ctime
= tv
.tv_sec
;
1137 st
.st_atime
= st
.st_mtime
= st
.st_ctime
= (time_t) 0;
1141 ret
= fstat (fd
, &st
);
1145 remote_fileio_return_errno (-1);
1150 remote_fileio_to_fio_stat (&st
, &fst
);
1152 retlength
= remote_fileio_write_bytes (ptrval
, (char *) &fst
, sizeof fst
);
1153 if (retlength
!= sizeof fst
)
1155 remote_fileio_return_errno (-1);
1159 remote_fileio_return_success (ret
);
1163 remote_fileio_func_gettimeofday (char *buf
)
1169 struct fio_timeval ftv
;
1171 /* 1. Parameter: struct timeval pointer */
1172 if (remote_fileio_extract_long (&buf
, &lnum
))
1174 remote_fileio_ioerror ();
1177 ptrval
= (CORE_ADDR
) lnum
;
1178 /* 2. Parameter: some pointer value... */
1179 if (remote_fileio_extract_long (&buf
, &lnum
))
1181 remote_fileio_ioerror ();
1184 /* ...which has to be NULL */
1187 remote_fileio_reply (-1, FILEIO_EINVAL
);
1191 remote_fio_no_longjmp
= 1;
1192 ret
= gettimeofday (&tv
, NULL
);
1196 remote_fileio_return_errno (-1);
1202 remote_fileio_to_fio_timeval (&tv
, &ftv
);
1204 retlength
= remote_fileio_write_bytes (ptrval
, (char *) &ftv
, sizeof ftv
);
1205 if (retlength
!= sizeof ftv
)
1207 remote_fileio_return_errno (-1);
1211 remote_fileio_return_success (ret
);
1215 remote_fileio_func_isatty (char *buf
)
1220 /* Parameter: file descriptor */
1221 if (remote_fileio_extract_int (&buf
, &target_fd
))
1223 remote_fileio_ioerror ();
1226 remote_fio_no_longjmp
= 1;
1227 fd
= remote_fileio_map_fd ((int) target_fd
);
1228 remote_fileio_return_success (fd
== FIO_FD_CONSOLE_IN
||
1229 fd
== FIO_FD_CONSOLE_OUT
? 1 : 0);
1233 remote_fileio_func_system (char *buf
)
1236 int ret
, length
, retlength
;
1239 /* Check if system(3) has been explicitely allowed using the
1240 `set remote system-call-allowed 1' command. If not, return
1242 if (!remote_fio_system_call_allowed
)
1244 remote_fileio_reply (-1, FILEIO_EPERM
);
1248 /* Parameter: Ptr to commandline / length incl. trailing zero */
1249 if (remote_fileio_extract_ptr_w_len (&buf
, &ptrval
, &length
))
1251 remote_fileio_ioerror ();
1254 /* Request commandline using 'm' packet */
1255 cmdline
= alloca (length
);
1256 retlength
= remote_read_bytes (ptrval
, cmdline
, length
);
1257 if (retlength
!= length
)
1259 remote_fileio_ioerror ();
1263 remote_fio_no_longjmp
= 1;
1264 ret
= system (cmdline
);
1267 remote_fileio_return_errno (-1);
1269 remote_fileio_return_success (WEXITSTATUS (ret
));
1274 void (*func
)(char *);
1275 } remote_fio_func_map
[] = {
1276 "open", remote_fileio_func_open
,
1277 "close", remote_fileio_func_close
,
1278 "read", remote_fileio_func_read
,
1279 "write", remote_fileio_func_write
,
1280 "lseek", remote_fileio_func_lseek
,
1281 "rename", remote_fileio_func_rename
,
1282 "unlink", remote_fileio_func_unlink
,
1283 "stat", remote_fileio_func_stat
,
1284 "fstat", remote_fileio_func_fstat
,
1285 "gettimeofday", remote_fileio_func_gettimeofday
,
1286 "isatty", remote_fileio_func_isatty
,
1287 "system", remote_fileio_func_system
,
1292 do_remote_fileio_request (struct ui_out
*uiout
, void *buf_arg
)
1294 char *buf
= buf_arg
;
1298 remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler
);
1300 c
= strchr (++buf
, ',');
1304 c
= strchr (buf
, '\0');
1305 for (idx
= 0; remote_fio_func_map
[idx
].name
; ++idx
)
1306 if (!strcmp (remote_fio_func_map
[idx
].name
, buf
))
1308 if (!remote_fio_func_map
[idx
].name
) /* ERROR: No such function. */
1309 return RETURN_ERROR
;
1310 remote_fio_func_map
[idx
].func (c
);
1315 remote_fileio_request (char *buf
)
1319 remote_fileio_sig_init ();
1321 remote_fio_ctrl_c_flag
= 0;
1322 remote_fio_no_longjmp
= 0;
1324 ex
= catch_exceptions (uiout
, do_remote_fileio_request
, (void *)buf
,
1325 NULL
, RETURN_MASK_ALL
);
1329 remote_fileio_reply (-1, FILEIO_ENOSYS
);
1332 remote_fileio_reply (-1, FILEIO_EINTR
);
1338 remote_fileio_sig_exit ();
1342 set_system_call_allowed (char *args
, int from_tty
)
1347 int val
= strtoul (args
, &arg_end
, 10);
1348 if (*args
&& *arg_end
== '\0')
1350 remote_fio_system_call_allowed
= !!val
;
1354 error ("Illegal argument for \"set remote system-call-allowed\" command");
1358 show_system_call_allowed (char *args
, int from_tty
)
1361 error ("Garbage after \"show remote system-call-allowed\" command: `%s'", args
);
1362 printf_unfiltered ("Calling host system(3) call from target is %sallowed\n",
1363 remote_fio_system_call_allowed
? "" : "not ");
1367 initialize_remote_fileio (struct cmd_list_element
*remote_set_cmdlist
,
1368 struct cmd_list_element
*remote_show_cmdlist
)
1370 add_cmd ("system-call-allowed", no_class
,
1371 set_system_call_allowed
,
1372 "Set if the host system(3) call is allowed for the target.\n",
1373 &remote_set_cmdlist
);
1374 add_cmd ("system-call-allowed", no_class
,
1375 show_system_call_allowed
,
1376 "Show if the host system(3) call is allowed for the target.\n",
1377 &remote_show_cmdlist
);