1 /* Remote File-I/O communications
3 Copyright (C) 2003, 2005, 2006, 2007 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 3 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, see <http://www.gnu.org/licenses/>. */
20 /* See the GDB User Guide for details of the GDB remote protocol. */
23 #include "gdb_string.h"
26 #include "gdb/fileio.h"
29 #include "exceptions.h"
30 #include "remote-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 int i
= remote_fio_data
.fd_map_size
;
73 if (!remote_fio_data
.fd_map
)
74 return remote_fileio_init_fd_map ();
75 remote_fio_data
.fd_map_size
+= 10;
76 remote_fio_data
.fd_map
=
77 (int *) xrealloc (remote_fio_data
.fd_map
,
78 remote_fio_data
.fd_map_size
* sizeof (int));
79 for (; i
< remote_fio_data
.fd_map_size
; i
++)
80 remote_fio_data
.fd_map
[i
] = FIO_FD_INVALID
;
81 return remote_fio_data
.fd_map_size
- 10;
85 remote_fileio_next_free_fd (void)
89 for (i
= 0; i
< remote_fio_data
.fd_map_size
; ++i
)
90 if (remote_fio_data
.fd_map
[i
] == FIO_FD_INVALID
)
92 return remote_fileio_resize_fd_map ();
96 remote_fileio_fd_to_targetfd (int fd
)
98 int target_fd
= remote_fileio_next_free_fd ();
99 remote_fio_data
.fd_map
[target_fd
] = fd
;
104 remote_fileio_map_fd (int target_fd
)
106 remote_fileio_init_fd_map ();
107 if (target_fd
< 0 || target_fd
>= remote_fio_data
.fd_map_size
)
108 return FIO_FD_INVALID
;
109 return remote_fio_data
.fd_map
[target_fd
];
113 remote_fileio_close_target_fd (int target_fd
)
115 remote_fileio_init_fd_map ();
116 if (target_fd
>= 0 && target_fd
< remote_fio_data
.fd_map_size
)
117 remote_fio_data
.fd_map
[target_fd
] = FIO_FD_INVALID
;
121 remote_fileio_oflags_to_host (long flags
)
125 if (flags
& FILEIO_O_CREAT
)
127 if (flags
& FILEIO_O_EXCL
)
129 if (flags
& FILEIO_O_TRUNC
)
131 if (flags
& FILEIO_O_APPEND
)
133 if (flags
& FILEIO_O_RDONLY
)
135 if (flags
& FILEIO_O_WRONLY
)
137 if (flags
& FILEIO_O_RDWR
)
139 /* On systems supporting binary and text mode, always open files in
148 remote_fileio_mode_to_host (long mode
, int open_call
)
154 if (mode
& FILEIO_S_IFREG
)
156 if (mode
& FILEIO_S_IFDIR
)
158 if (mode
& FILEIO_S_IFCHR
)
161 if (mode
& FILEIO_S_IRUSR
)
163 if (mode
& FILEIO_S_IWUSR
)
165 if (mode
& FILEIO_S_IXUSR
)
168 if (mode
& FILEIO_S_IRGRP
)
172 if (mode
& FILEIO_S_IWGRP
)
176 if (mode
& FILEIO_S_IXGRP
)
179 if (mode
& FILEIO_S_IROTH
)
182 if (mode
& FILEIO_S_IWOTH
)
186 if (mode
& FILEIO_S_IXOTH
)
193 remote_fileio_mode_to_target (mode_t mode
)
198 tmode
|= FILEIO_S_IFREG
;
200 tmode
|= FILEIO_S_IFDIR
;
202 tmode
|= FILEIO_S_IFCHR
;
204 tmode
|= FILEIO_S_IRUSR
;
206 tmode
|= FILEIO_S_IWUSR
;
208 tmode
|= FILEIO_S_IXUSR
;
211 tmode
|= FILEIO_S_IRGRP
;
215 tmode
|= FILEIO_S_IWGRP
;
219 tmode
|= FILEIO_S_IXGRP
;
222 tmode
|= FILEIO_S_IROTH
;
225 tmode
|= FILEIO_S_IWOTH
;
229 tmode
|= FILEIO_S_IXOTH
;
235 remote_fileio_errno_to_target (int error
)
242 return FILEIO_ENOENT
;
250 return FILEIO_EACCES
;
252 return FILEIO_EFAULT
;
256 return FILEIO_EEXIST
;
258 return FILEIO_ENODEV
;
260 return FILEIO_ENOTDIR
;
262 return FILEIO_EISDIR
;
264 return FILEIO_EINVAL
;
266 return FILEIO_ENFILE
;
268 return FILEIO_EMFILE
;
272 return FILEIO_ENOSPC
;
274 return FILEIO_ESPIPE
;
278 return FILEIO_ENOSYS
;
280 return FILEIO_ENAMETOOLONG
;
282 return FILEIO_EUNKNOWN
;
286 remote_fileio_seek_flag_to_host (long num
, int *flag
)
292 case FILEIO_SEEK_SET
:
295 case FILEIO_SEEK_CUR
:
298 case FILEIO_SEEK_END
:
308 remote_fileio_extract_long (char **buf
, LONGEST
*retlong
)
313 if (!buf
|| !*buf
|| !**buf
|| !retlong
)
315 c
= strchr (*buf
, ',');
319 c
= strchr (*buf
, '\0');
320 while (strchr ("+-", **buf
))
326 for (*retlong
= 0; **buf
; ++*buf
)
329 if (**buf
>= '0' && **buf
<= '9')
330 *retlong
+= **buf
- '0';
331 else if (**buf
>= 'a' && **buf
<= 'f')
332 *retlong
+= **buf
- 'a' + 10;
333 else if (**buf
>= 'A' && **buf
<= 'F')
334 *retlong
+= **buf
- 'A' + 10;
344 remote_fileio_extract_int (char **buf
, long *retint
)
351 ret
= remote_fileio_extract_long (buf
, &retlong
);
353 *retint
= (long) retlong
;
358 remote_fileio_extract_ptr_w_len (char **buf
, CORE_ADDR
*ptrval
, int *length
)
363 if (!buf
|| !*buf
|| !**buf
|| !ptrval
|| !length
)
365 c
= strchr (*buf
, '/');
369 if (remote_fileio_extract_long (buf
, &retlong
))
371 *ptrval
= (CORE_ADDR
) retlong
;
373 if (remote_fileio_extract_long (buf
, &retlong
))
375 *length
= (int) retlong
;
379 /* Convert to big endian */
381 remote_fileio_to_be (LONGEST num
, char *buf
, int bytes
)
385 for (i
= 0; i
< bytes
; ++i
)
386 buf
[i
] = (num
>> (8 * (bytes
- i
- 1))) & 0xff;
390 remote_fileio_to_fio_uint (long num
, fio_uint_t fnum
)
392 remote_fileio_to_be ((LONGEST
) num
, (char *) fnum
, 4);
396 remote_fileio_to_fio_mode (mode_t num
, fio_mode_t fnum
)
398 remote_fileio_to_be (remote_fileio_mode_to_target(num
), (char *) fnum
, 4);
402 remote_fileio_to_fio_time (time_t num
, fio_time_t fnum
)
404 remote_fileio_to_be ((LONGEST
) num
, (char *) fnum
, 4);
408 remote_fileio_to_fio_long (LONGEST num
, fio_long_t fnum
)
410 remote_fileio_to_be (num
, (char *) fnum
, 8);
414 remote_fileio_to_fio_ulong (LONGEST num
, fio_ulong_t fnum
)
416 remote_fileio_to_be (num
, (char *) fnum
, 8);
420 remote_fileio_to_fio_stat (struct stat
*st
, struct fio_stat
*fst
)
424 /* `st_dev' is set in the calling function */
425 remote_fileio_to_fio_uint ((long) st
->st_ino
, fst
->fst_ino
);
426 remote_fileio_to_fio_mode (st
->st_mode
, fst
->fst_mode
);
427 remote_fileio_to_fio_uint ((long) st
->st_nlink
, fst
->fst_nlink
);
428 remote_fileio_to_fio_uint ((long) st
->st_uid
, fst
->fst_uid
);
429 remote_fileio_to_fio_uint ((long) st
->st_gid
, fst
->fst_gid
);
430 remote_fileio_to_fio_uint ((long) st
->st_rdev
, fst
->fst_rdev
);
431 remote_fileio_to_fio_ulong ((LONGEST
) st
->st_size
, fst
->fst_size
);
432 #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
433 blksize
= st
->st_blksize
;
437 remote_fileio_to_fio_ulong (blksize
, fst
->fst_blksize
);
438 #if HAVE_STRUCT_STAT_ST_BLOCKS
439 remote_fileio_to_fio_ulong ((LONGEST
) st
->st_blocks
, fst
->fst_blocks
);
441 /* FIXME: This is correct for DJGPP, but other systems that don't
442 have st_blocks, if any, might prefer 512 instead of st_blksize.
443 (eliz, 30-12-2003) */
444 remote_fileio_to_fio_ulong (((LONGEST
) st
->st_size
+ blksize
- 1)
448 remote_fileio_to_fio_time (st
->st_atime
, fst
->fst_atime
);
449 remote_fileio_to_fio_time (st
->st_mtime
, fst
->fst_mtime
);
450 remote_fileio_to_fio_time (st
->st_ctime
, fst
->fst_ctime
);
454 remote_fileio_to_fio_timeval (struct timeval
*tv
, struct fio_timeval
*ftv
)
456 remote_fileio_to_fio_time (tv
->tv_sec
, ftv
->ftv_sec
);
457 remote_fileio_to_fio_long (tv
->tv_usec
, ftv
->ftv_usec
);
460 static int remote_fio_ctrl_c_flag
= 0;
461 static int remote_fio_no_longjmp
= 0;
463 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
464 static struct sigaction remote_fio_sa
;
465 static struct sigaction remote_fio_osa
;
467 static void (*remote_fio_ofunc
)(int);
471 remote_fileio_sig_init (void)
473 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
474 remote_fio_sa
.sa_handler
= SIG_IGN
;
475 sigemptyset (&remote_fio_sa
.sa_mask
);
476 remote_fio_sa
.sa_flags
= 0;
477 sigaction (SIGINT
, &remote_fio_sa
, &remote_fio_osa
);
479 remote_fio_ofunc
= signal (SIGINT
, SIG_IGN
);
484 remote_fileio_sig_set (void (*sigint_func
)(int))
486 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
487 remote_fio_sa
.sa_handler
= sigint_func
;
488 sigemptyset (&remote_fio_sa
.sa_mask
);
489 remote_fio_sa
.sa_flags
= 0;
490 sigaction (SIGINT
, &remote_fio_sa
, NULL
);
492 signal (SIGINT
, sigint_func
);
497 remote_fileio_sig_exit (void)
499 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
500 sigaction (SIGINT
, &remote_fio_osa
, NULL
);
502 signal (SIGINT
, remote_fio_ofunc
);
507 remote_fileio_ctrl_c_signal_handler (int signo
)
509 remote_fileio_sig_set (SIG_IGN
);
510 remote_fio_ctrl_c_flag
= 1;
511 if (!remote_fio_no_longjmp
)
512 deprecated_throw_reason (RETURN_QUIT
);
513 remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler
);
517 remote_fileio_reply (int retcode
, int error
)
521 remote_fileio_sig_set (SIG_IGN
);
528 sprintf (buf
+ strlen (buf
), "%x", retcode
);
529 if (error
|| remote_fio_ctrl_c_flag
)
531 if (error
&& remote_fio_ctrl_c_flag
)
532 error
= FILEIO_EINTR
;
538 sprintf (buf
+ strlen (buf
), ",%x", error
);
539 if (remote_fio_ctrl_c_flag
)
542 remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler
);
547 remote_fileio_ioerror (void)
549 remote_fileio_reply (-1, FILEIO_EIO
);
553 remote_fileio_badfd (void)
555 remote_fileio_reply (-1, FILEIO_EBADF
);
559 remote_fileio_return_errno (int retcode
)
561 remote_fileio_reply (retcode
,
562 retcode
< 0 ? remote_fileio_errno_to_target (errno
) : 0);
566 remote_fileio_return_success (int retcode
)
568 remote_fileio_reply (retcode
, 0);
571 /* Wrapper function for remote_write_bytes() which has the disadvantage to
572 write only one packet, regardless of the requested number of bytes to
573 transfer. This wrapper calls remote_write_bytes() as often as needed. */
575 remote_fileio_write_bytes (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
577 int ret
= 0, written
;
579 while (len
> 0 && (written
= remote_write_bytes (memaddr
, myaddr
, len
)) > 0)
590 remote_fileio_func_open (char *buf
)
593 int length
, retlength
;
600 /* 1. Parameter: Ptr to pathname / length incl. trailing zero */
601 if (remote_fileio_extract_ptr_w_len (&buf
, &ptrval
, &length
))
603 remote_fileio_ioerror ();
606 /* 2. Parameter: open flags */
607 if (remote_fileio_extract_int (&buf
, &num
))
609 remote_fileio_ioerror ();
612 flags
= remote_fileio_oflags_to_host (num
);
613 /* 3. Parameter: open mode */
614 if (remote_fileio_extract_int (&buf
, &num
))
616 remote_fileio_ioerror ();
619 mode
= remote_fileio_mode_to_host (num
, 1);
621 /* Request pathname using 'm' packet */
622 pathname
= alloca (length
);
623 retlength
= remote_read_bytes (ptrval
, (gdb_byte
*) pathname
, length
);
624 if (retlength
!= length
)
626 remote_fileio_ioerror ();
630 /* Check if pathname exists and is not a regular file or directory. If so,
631 return an appropriate error code. Same for trying to open directories
633 if (!stat (pathname
, &st
))
635 if (!S_ISREG (st
.st_mode
) && !S_ISDIR (st
.st_mode
))
637 remote_fileio_reply (-1, FILEIO_ENODEV
);
640 if (S_ISDIR (st
.st_mode
)
641 && ((flags
& O_WRONLY
) == O_WRONLY
|| (flags
& O_RDWR
) == O_RDWR
))
643 remote_fileio_reply (-1, FILEIO_EISDIR
);
648 remote_fio_no_longjmp
= 1;
649 fd
= open (pathname
, flags
, mode
);
652 remote_fileio_return_errno (-1);
656 fd
= remote_fileio_fd_to_targetfd (fd
);
657 remote_fileio_return_success (fd
);
661 remote_fileio_func_close (char *buf
)
666 /* Parameter: file descriptor */
667 if (remote_fileio_extract_int (&buf
, &num
))
669 remote_fileio_ioerror ();
672 fd
= remote_fileio_map_fd ((int) num
);
673 if (fd
== FIO_FD_INVALID
)
675 remote_fileio_badfd ();
679 remote_fio_no_longjmp
= 1;
680 if (fd
!= FIO_FD_CONSOLE_IN
&& fd
!= FIO_FD_CONSOLE_OUT
&& close (fd
))
681 remote_fileio_return_errno (-1);
682 remote_fileio_close_target_fd ((int) num
);
683 remote_fileio_return_success (0);
687 remote_fileio_func_read (char *buf
)
692 int fd
, ret
, retlength
;
695 off_t old_offset
, new_offset
;
697 /* 1. Parameter: file descriptor */
698 if (remote_fileio_extract_int (&buf
, &target_fd
))
700 remote_fileio_ioerror ();
703 fd
= remote_fileio_map_fd ((int) target_fd
);
704 if (fd
== FIO_FD_INVALID
)
706 remote_fileio_badfd ();
709 /* 2. Parameter: buffer pointer */
710 if (remote_fileio_extract_long (&buf
, &lnum
))
712 remote_fileio_ioerror ();
715 ptrval
= (CORE_ADDR
) lnum
;
716 /* 3. Parameter: buffer length */
717 if (remote_fileio_extract_int (&buf
, &num
))
719 remote_fileio_ioerror ();
722 length
= (size_t) num
;
726 case FIO_FD_CONSOLE_OUT
:
727 remote_fileio_badfd ();
729 case FIO_FD_CONSOLE_IN
:
731 static char *remaining_buf
= NULL
;
732 static int remaining_length
= 0;
734 buffer
= (gdb_byte
*) xmalloc (32768);
737 remote_fio_no_longjmp
= 1;
738 if (remaining_length
> length
)
740 memcpy (buffer
, remaining_buf
, length
);
741 memmove (remaining_buf
, remaining_buf
+ length
,
742 remaining_length
- length
);
743 remaining_length
-= length
;
748 memcpy (buffer
, remaining_buf
, remaining_length
);
749 xfree (remaining_buf
);
750 remaining_buf
= NULL
;
751 ret
= remaining_length
;
756 ret
= ui_file_read (gdb_stdtargin
, (char *) buffer
, 32767);
757 remote_fio_no_longjmp
= 1;
758 if (ret
> 0 && (size_t)ret
> length
)
760 remaining_buf
= (char *) xmalloc (ret
- length
);
761 remaining_length
= ret
- length
;
762 memcpy (remaining_buf
, buffer
+ length
, remaining_length
);
769 buffer
= (gdb_byte
*) xmalloc (length
);
770 /* POSIX defines EINTR behaviour of read in a weird way. It's allowed
771 for read() to return -1 even if "some" bytes have been read. It
772 has been corrected in SUSv2 but that doesn't help us much...
773 Therefore a complete solution must check how many bytes have been
774 read on EINTR to return a more reliable value to the target */
775 old_offset
= lseek (fd
, 0, SEEK_CUR
);
776 remote_fio_no_longjmp
= 1;
777 ret
= read (fd
, buffer
, length
);
778 if (ret
< 0 && errno
== EINTR
)
780 new_offset
= lseek (fd
, 0, SEEK_CUR
);
781 /* If some data has been read, return the number of bytes read.
782 The Ctrl-C flag is set in remote_fileio_reply() anyway */
783 if (old_offset
!= new_offset
)
784 ret
= new_offset
- old_offset
;
791 retlength
= remote_fileio_write_bytes (ptrval
, buffer
, ret
);
792 if (retlength
!= ret
)
793 ret
= -1; /* errno has been set to EIO in remote_fileio_write_bytes() */
797 remote_fileio_return_errno (-1);
799 remote_fileio_return_success (ret
);
805 remote_fileio_func_write (char *buf
)
810 int fd
, ret
, retlength
;
814 /* 1. Parameter: file descriptor */
815 if (remote_fileio_extract_int (&buf
, &target_fd
))
817 remote_fileio_ioerror ();
820 fd
= remote_fileio_map_fd ((int) target_fd
);
821 if (fd
== FIO_FD_INVALID
)
823 remote_fileio_badfd ();
826 /* 2. Parameter: buffer pointer */
827 if (remote_fileio_extract_long (&buf
, &lnum
))
829 remote_fileio_ioerror ();
832 ptrval
= (CORE_ADDR
) lnum
;
833 /* 3. Parameter: buffer length */
834 if (remote_fileio_extract_int (&buf
, &num
))
836 remote_fileio_ioerror ();
839 length
= (size_t) num
;
841 buffer
= (gdb_byte
*) xmalloc (length
);
842 retlength
= remote_read_bytes (ptrval
, buffer
, length
);
843 if (retlength
!= length
)
846 remote_fileio_ioerror ();
850 remote_fio_no_longjmp
= 1;
853 case FIO_FD_CONSOLE_IN
:
854 remote_fileio_badfd ();
857 case FIO_FD_CONSOLE_OUT
:
858 ui_file_write (target_fd
== 1 ? gdb_stdtarg
: gdb_stdtargerr
,
859 (char *) buffer
, length
);
860 gdb_flush (target_fd
== 1 ? gdb_stdtarg
: gdb_stdtargerr
);
864 ret
= write (fd
, buffer
, length
);
865 if (ret
< 0 && errno
== EACCES
)
866 errno
= EBADF
; /* Cygwin returns EACCESS when writing to a R/O file.*/
871 remote_fileio_return_errno (-1);
873 remote_fileio_return_success (ret
);
879 remote_fileio_func_lseek (char *buf
)
886 /* 1. Parameter: file descriptor */
887 if (remote_fileio_extract_int (&buf
, &num
))
889 remote_fileio_ioerror ();
892 fd
= remote_fileio_map_fd ((int) num
);
893 if (fd
== FIO_FD_INVALID
)
895 remote_fileio_badfd ();
898 else if (fd
== FIO_FD_CONSOLE_IN
|| fd
== FIO_FD_CONSOLE_OUT
)
900 remote_fileio_reply (-1, FILEIO_ESPIPE
);
904 /* 2. Parameter: offset */
905 if (remote_fileio_extract_long (&buf
, &lnum
))
907 remote_fileio_ioerror ();
910 offset
= (off_t
) lnum
;
911 /* 3. Parameter: flag */
912 if (remote_fileio_extract_int (&buf
, &num
))
914 remote_fileio_ioerror ();
917 if (remote_fileio_seek_flag_to_host (num
, &flag
))
919 remote_fileio_reply (-1, FILEIO_EINVAL
);
923 remote_fio_no_longjmp
= 1;
924 ret
= lseek (fd
, offset
, flag
);
926 if (ret
== (off_t
) -1)
927 remote_fileio_return_errno (-1);
929 remote_fileio_return_success (ret
);
933 remote_fileio_func_rename (char *buf
)
935 CORE_ADDR old_ptr
, new_ptr
;
936 int old_len
, new_len
, retlength
;
937 char *oldpath
, *newpath
;
939 struct stat ost
, nst
;
941 /* 1. Parameter: Ptr to oldpath / length incl. trailing zero */
942 if (remote_fileio_extract_ptr_w_len (&buf
, &old_ptr
, &old_len
))
944 remote_fileio_ioerror ();
948 /* 2. Parameter: Ptr to newpath / length incl. trailing zero */
949 if (remote_fileio_extract_ptr_w_len (&buf
, &new_ptr
, &new_len
))
951 remote_fileio_ioerror ();
955 /* Request oldpath using 'm' packet */
956 oldpath
= alloca (old_len
);
957 retlength
= remote_read_bytes (old_ptr
, (gdb_byte
*) oldpath
, old_len
);
958 if (retlength
!= old_len
)
960 remote_fileio_ioerror ();
964 /* Request newpath using 'm' packet */
965 newpath
= alloca (new_len
);
966 retlength
= remote_read_bytes (new_ptr
, (gdb_byte
*) newpath
, new_len
);
967 if (retlength
!= new_len
)
969 remote_fileio_ioerror ();
973 /* Only operate on regular files and directories */
974 of
= stat (oldpath
, &ost
);
975 nf
= stat (newpath
, &nst
);
976 if ((!of
&& !S_ISREG (ost
.st_mode
) && !S_ISDIR (ost
.st_mode
))
977 || (!nf
&& !S_ISREG (nst
.st_mode
) && !S_ISDIR (nst
.st_mode
)))
979 remote_fileio_reply (-1, FILEIO_EACCES
);
983 remote_fio_no_longjmp
= 1;
984 ret
= rename (oldpath
, newpath
);
988 /* Special case: newpath is a non-empty directory. Some systems
989 return ENOTEMPTY, some return EEXIST. We coerce that to be
991 if (errno
== ENOTEMPTY
)
994 /* Workaround some Cygwin problems with correct errnos. */
997 if (!of
&& !nf
&& S_ISDIR (nst
.st_mode
))
999 if (S_ISREG (ost
.st_mode
))
1003 char oldfullpath
[PATH_MAX
+ 1];
1004 char newfullpath
[PATH_MAX
+ 1];
1007 cygwin_conv_to_full_posix_path (oldpath
, oldfullpath
);
1008 cygwin_conv_to_full_posix_path (newpath
, newfullpath
);
1009 len
= strlen (oldfullpath
);
1010 if (newfullpath
[len
] == '/'
1011 && !strncmp (oldfullpath
, newfullpath
, len
))
1020 remote_fileio_return_errno (-1);
1023 remote_fileio_return_success (ret
);
1027 remote_fileio_func_unlink (char *buf
)
1030 int length
, retlength
;
1035 /* Parameter: Ptr to pathname / length incl. trailing zero */
1036 if (remote_fileio_extract_ptr_w_len (&buf
, &ptrval
, &length
))
1038 remote_fileio_ioerror ();
1041 /* Request pathname using 'm' packet */
1042 pathname
= alloca (length
);
1043 retlength
= remote_read_bytes (ptrval
, (gdb_byte
*) pathname
, length
);
1044 if (retlength
!= length
)
1046 remote_fileio_ioerror ();
1050 /* Only operate on regular files (and directories, which allows to return
1051 the correct return code) */
1052 if (!stat (pathname
, &st
) && !S_ISREG (st
.st_mode
) && !S_ISDIR (st
.st_mode
))
1054 remote_fileio_reply (-1, FILEIO_ENODEV
);
1058 remote_fio_no_longjmp
= 1;
1059 ret
= unlink (pathname
);
1062 remote_fileio_return_errno (-1);
1064 remote_fileio_return_success (ret
);
1068 remote_fileio_func_stat (char *buf
)
1070 CORE_ADDR statptr
, nameptr
;
1071 int ret
, namelength
, retlength
;
1075 struct fio_stat fst
;
1077 /* 1. Parameter: Ptr to pathname / length incl. trailing zero */
1078 if (remote_fileio_extract_ptr_w_len (&buf
, &nameptr
, &namelength
))
1080 remote_fileio_ioerror ();
1084 /* 2. Parameter: Ptr to struct stat */
1085 if (remote_fileio_extract_long (&buf
, &lnum
))
1087 remote_fileio_ioerror ();
1090 statptr
= (CORE_ADDR
) lnum
;
1092 /* Request pathname using 'm' packet */
1093 pathname
= alloca (namelength
);
1094 retlength
= remote_read_bytes (nameptr
, (gdb_byte
*) pathname
, namelength
);
1095 if (retlength
!= namelength
)
1097 remote_fileio_ioerror ();
1101 remote_fio_no_longjmp
= 1;
1102 ret
= stat (pathname
, &st
);
1106 remote_fileio_return_errno (-1);
1109 /* Only operate on regular files and directories */
1110 if (!ret
&& !S_ISREG (st
.st_mode
) && !S_ISDIR (st
.st_mode
))
1112 remote_fileio_reply (-1, FILEIO_EACCES
);
1117 remote_fileio_to_fio_stat (&st
, &fst
);
1118 remote_fileio_to_fio_uint (0, fst
.fst_dev
);
1120 retlength
= remote_fileio_write_bytes (statptr
,
1121 (gdb_byte
*) &fst
, sizeof fst
);
1122 if (retlength
!= sizeof fst
)
1124 remote_fileio_return_errno (-1);
1128 remote_fileio_return_success (ret
);
1132 remote_fileio_func_fstat (char *buf
)
1135 int fd
, ret
, retlength
;
1139 struct fio_stat fst
;
1142 /* 1. Parameter: file descriptor */
1143 if (remote_fileio_extract_int (&buf
, &target_fd
))
1145 remote_fileio_ioerror ();
1148 fd
= remote_fileio_map_fd ((int) target_fd
);
1149 if (fd
== FIO_FD_INVALID
)
1151 remote_fileio_badfd ();
1154 /* 2. Parameter: Ptr to struct stat */
1155 if (remote_fileio_extract_long (&buf
, &lnum
))
1157 remote_fileio_ioerror ();
1160 ptrval
= (CORE_ADDR
) lnum
;
1162 remote_fio_no_longjmp
= 1;
1163 if (fd
== FIO_FD_CONSOLE_IN
|| fd
== FIO_FD_CONSOLE_OUT
)
1165 remote_fileio_to_fio_uint (1, fst
.fst_dev
);
1166 st
.st_mode
= S_IFCHR
| (fd
== FIO_FD_CONSOLE_IN
? S_IRUSR
: S_IWUSR
);
1169 st
.st_uid
= getuid ();
1174 st
.st_gid
= getgid ();
1180 #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
1181 st
.st_blksize
= 512;
1183 #if HAVE_STRUCT_STAT_ST_BLOCKS
1186 if (!gettimeofday (&tv
, NULL
))
1187 st
.st_atime
= st
.st_mtime
= st
.st_ctime
= tv
.tv_sec
;
1189 st
.st_atime
= st
.st_mtime
= st
.st_ctime
= (time_t) 0;
1193 ret
= fstat (fd
, &st
);
1197 remote_fileio_return_errno (-1);
1202 remote_fileio_to_fio_stat (&st
, &fst
);
1204 retlength
= remote_fileio_write_bytes (ptrval
, (gdb_byte
*) &fst
, sizeof fst
);
1205 if (retlength
!= sizeof fst
)
1207 remote_fileio_return_errno (-1);
1211 remote_fileio_return_success (ret
);
1215 remote_fileio_func_gettimeofday (char *buf
)
1221 struct fio_timeval ftv
;
1223 /* 1. Parameter: struct timeval pointer */
1224 if (remote_fileio_extract_long (&buf
, &lnum
))
1226 remote_fileio_ioerror ();
1229 ptrval
= (CORE_ADDR
) lnum
;
1230 /* 2. Parameter: some pointer value... */
1231 if (remote_fileio_extract_long (&buf
, &lnum
))
1233 remote_fileio_ioerror ();
1236 /* ...which has to be NULL */
1239 remote_fileio_reply (-1, FILEIO_EINVAL
);
1243 remote_fio_no_longjmp
= 1;
1244 ret
= gettimeofday (&tv
, NULL
);
1248 remote_fileio_return_errno (-1);
1254 remote_fileio_to_fio_timeval (&tv
, &ftv
);
1256 retlength
= remote_fileio_write_bytes (ptrval
, (gdb_byte
*) &ftv
, sizeof ftv
);
1257 if (retlength
!= sizeof ftv
)
1259 remote_fileio_return_errno (-1);
1263 remote_fileio_return_success (ret
);
1267 remote_fileio_func_isatty (char *buf
)
1272 /* Parameter: file descriptor */
1273 if (remote_fileio_extract_int (&buf
, &target_fd
))
1275 remote_fileio_ioerror ();
1278 remote_fio_no_longjmp
= 1;
1279 fd
= remote_fileio_map_fd ((int) target_fd
);
1280 remote_fileio_return_success (fd
== FIO_FD_CONSOLE_IN
||
1281 fd
== FIO_FD_CONSOLE_OUT
? 1 : 0);
1285 remote_fileio_func_system (char *buf
)
1288 int ret
, length
, retlength
;
1289 char *cmdline
= NULL
;
1291 /* Parameter: Ptr to commandline / length incl. trailing zero */
1292 if (remote_fileio_extract_ptr_w_len (&buf
, &ptrval
, &length
))
1294 remote_fileio_ioerror ();
1300 /* Request commandline using 'm' packet */
1301 cmdline
= alloca (length
);
1302 retlength
= remote_read_bytes (ptrval
, (gdb_byte
*) cmdline
, length
);
1303 if (retlength
!= length
)
1305 remote_fileio_ioerror ();
1310 /* Check if system(3) has been explicitely allowed using the
1311 `set remote system-call-allowed 1' command. If length is 0,
1312 indicating a NULL parameter to the system call, return zero to
1313 indicate a shell is not available. Otherwise fail with EPERM. */
1314 if (!remote_fio_system_call_allowed
)
1317 remote_fileio_return_success (0);
1319 remote_fileio_reply (-1, FILEIO_EPERM
);
1323 remote_fio_no_longjmp
= 1;
1324 ret
= system (cmdline
);
1327 remote_fileio_return_success (ret
);
1329 remote_fileio_return_errno (-1);
1331 remote_fileio_return_success (WEXITSTATUS (ret
));
1336 void (*func
)(char *);
1337 } remote_fio_func_map
[] = {
1338 { "open", remote_fileio_func_open
},
1339 { "close", remote_fileio_func_close
},
1340 { "read", remote_fileio_func_read
},
1341 { "write", remote_fileio_func_write
},
1342 { "lseek", remote_fileio_func_lseek
},
1343 { "rename", remote_fileio_func_rename
},
1344 { "unlink", remote_fileio_func_unlink
},
1345 { "stat", remote_fileio_func_stat
},
1346 { "fstat", remote_fileio_func_fstat
},
1347 { "gettimeofday", remote_fileio_func_gettimeofday
},
1348 { "isatty", remote_fileio_func_isatty
},
1349 { "system", remote_fileio_func_system
},
1354 do_remote_fileio_request (struct ui_out
*uiout
, void *buf_arg
)
1356 char *buf
= buf_arg
;
1360 remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler
);
1362 c
= strchr (++buf
, ',');
1366 c
= strchr (buf
, '\0');
1367 for (idx
= 0; remote_fio_func_map
[idx
].name
; ++idx
)
1368 if (!strcmp (remote_fio_func_map
[idx
].name
, buf
))
1370 if (!remote_fio_func_map
[idx
].name
) /* ERROR: No such function. */
1371 return RETURN_ERROR
;
1372 remote_fio_func_map
[idx
].func (c
);
1376 /* Close any open descriptors, and reinitialize the file mapping. */
1379 remote_fileio_reset (void)
1383 for (ix
= 0; ix
!= remote_fio_data
.fd_map_size
; ix
++)
1385 int fd
= remote_fio_data
.fd_map
[ix
];
1390 if (remote_fio_data
.fd_map
)
1392 free (remote_fio_data
.fd_map
);
1393 remote_fio_data
.fd_map
= NULL
;
1394 remote_fio_data
.fd_map_size
= 0;
1399 remote_fileio_request (char *buf
)
1403 remote_fileio_sig_init ();
1405 remote_fio_ctrl_c_flag
= 0;
1406 remote_fio_no_longjmp
= 0;
1408 ex
= catch_exceptions (uiout
, do_remote_fileio_request
, (void *)buf
,
1413 remote_fileio_reply (-1, FILEIO_ENOSYS
);
1416 remote_fileio_reply (-1, FILEIO_EINTR
);
1422 remote_fileio_sig_exit ();
1426 set_system_call_allowed (char *args
, int from_tty
)
1431 int val
= strtoul (args
, &arg_end
, 10);
1432 if (*args
&& *arg_end
== '\0')
1434 remote_fio_system_call_allowed
= !!val
;
1438 error (_("Illegal argument for \"set remote system-call-allowed\" command"));
1442 show_system_call_allowed (char *args
, int from_tty
)
1445 error (_("Garbage after \"show remote system-call-allowed\" command: `%s'"), args
);
1446 printf_unfiltered ("Calling host system(3) call from target is %sallowed\n",
1447 remote_fio_system_call_allowed
? "" : "not ");
1451 initialize_remote_fileio (struct cmd_list_element
*remote_set_cmdlist
,
1452 struct cmd_list_element
*remote_show_cmdlist
)
1454 add_cmd ("system-call-allowed", no_class
,
1455 set_system_call_allowed
,
1456 _("Set if the host system(3) call is allowed for the target."),
1457 &remote_set_cmdlist
);
1458 add_cmd ("system-call-allowed", no_class
,
1459 show_system_call_allowed
,
1460 _("Show if the host system(3) call is allowed for the target."),
1461 &remote_show_cmdlist
);