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"
31 #include "remote-fileio.h"
36 #include <sys/cygwin.h> /* For cygwin_conv_to_full_posix_path. */
45 #define FIO_FD_INVALID -1
46 #define FIO_FD_CONSOLE_IN -2
47 #define FIO_FD_CONSOLE_OUT -3
49 static int remote_fio_system_call_allowed
= 0;
52 remote_fileio_init_fd_map (void)
56 if (!remote_fio_data
.fd_map
)
58 remote_fio_data
.fd_map
= (int *) xmalloc (10 * sizeof (int));
59 remote_fio_data
.fd_map_size
= 10;
60 remote_fio_data
.fd_map
[0] = FIO_FD_CONSOLE_IN
;
61 remote_fio_data
.fd_map
[1] = FIO_FD_CONSOLE_OUT
;
62 remote_fio_data
.fd_map
[2] = FIO_FD_CONSOLE_OUT
;
63 for (i
= 3; i
< 10; ++i
)
64 remote_fio_data
.fd_map
[i
] = FIO_FD_INVALID
;
70 remote_fileio_resize_fd_map (void)
72 if (!remote_fio_data
.fd_map
)
73 return remote_fileio_init_fd_map ();
74 remote_fio_data
.fd_map_size
+= 10;
75 remote_fio_data
.fd_map
=
76 (int *) xrealloc (remote_fio_data
.fd_map
,
77 remote_fio_data
.fd_map_size
* sizeof (int));
78 return remote_fio_data
.fd_map_size
- 10;
82 remote_fileio_next_free_fd (void)
86 for (i
= 0; i
< remote_fio_data
.fd_map_size
; ++i
)
87 if (remote_fio_data
.fd_map
[i
] == FIO_FD_INVALID
)
89 return remote_fileio_resize_fd_map ();
93 remote_fileio_fd_to_targetfd (int fd
)
95 int target_fd
= remote_fileio_next_free_fd ();
96 remote_fio_data
.fd_map
[target_fd
] = fd
;
101 remote_fileio_map_fd (int target_fd
)
103 remote_fileio_init_fd_map ();
104 if (target_fd
< 0 || target_fd
>= remote_fio_data
.fd_map_size
)
105 return FIO_FD_INVALID
;
106 return remote_fio_data
.fd_map
[target_fd
];
110 remote_fileio_close_target_fd (int target_fd
)
112 remote_fileio_init_fd_map ();
113 if (target_fd
>= 0 && target_fd
< remote_fio_data
.fd_map_size
)
114 remote_fio_data
.fd_map
[target_fd
] = FIO_FD_INVALID
;
118 remote_fileio_oflags_to_host (long flags
)
122 if (flags
& FILEIO_O_CREAT
)
124 if (flags
& FILEIO_O_EXCL
)
126 if (flags
& FILEIO_O_TRUNC
)
128 if (flags
& FILEIO_O_APPEND
)
130 if (flags
& FILEIO_O_RDONLY
)
132 if (flags
& FILEIO_O_WRONLY
)
134 if (flags
& FILEIO_O_RDWR
)
136 /* On systems supporting binary and text mode, always open files in
145 remote_fileio_mode_to_host (long mode
, int open_call
)
151 if (mode
& FILEIO_S_IFREG
)
153 if (mode
& FILEIO_S_IFDIR
)
155 if (mode
& FILEIO_S_IFCHR
)
158 if (mode
& FILEIO_S_IRUSR
)
160 if (mode
& FILEIO_S_IWUSR
)
162 if (mode
& FILEIO_S_IXUSR
)
164 if (mode
& FILEIO_S_IRGRP
)
166 if (mode
& FILEIO_S_IWGRP
)
168 if (mode
& FILEIO_S_IXGRP
)
170 if (mode
& FILEIO_S_IROTH
)
172 if (mode
& FILEIO_S_IWOTH
)
174 if (mode
& FILEIO_S_IXOTH
)
180 remote_fileio_mode_to_target (mode_t mode
)
185 tmode
|= FILEIO_S_IFREG
;
187 tmode
|= FILEIO_S_IFDIR
;
189 tmode
|= FILEIO_S_IFCHR
;
191 tmode
|= FILEIO_S_IRUSR
;
193 tmode
|= FILEIO_S_IWUSR
;
195 tmode
|= FILEIO_S_IXUSR
;
197 tmode
|= FILEIO_S_IRGRP
;
199 tmode
|= FILEIO_S_IWGRP
;
201 tmode
|= FILEIO_S_IXGRP
;
203 tmode
|= FILEIO_S_IROTH
;
205 tmode
|= FILEIO_S_IWOTH
;
207 tmode
|= FILEIO_S_IXOTH
;
212 remote_fileio_errno_to_target (int error
)
219 return FILEIO_ENOENT
;
227 return FILEIO_EACCES
;
229 return FILEIO_EFAULT
;
233 return FILEIO_EEXIST
;
235 return FILEIO_ENODEV
;
237 return FILEIO_ENOTDIR
;
239 return FILEIO_EISDIR
;
241 return FILEIO_EINVAL
;
243 return FILEIO_ENFILE
;
245 return FILEIO_EMFILE
;
249 return FILEIO_ENOSPC
;
251 return FILEIO_ESPIPE
;
255 return FILEIO_ENOSYS
;
257 return FILEIO_ENAMETOOLONG
;
259 return FILEIO_EUNKNOWN
;
263 remote_fileio_seek_flag_to_host (long num
, int *flag
)
269 case FILEIO_SEEK_SET
:
272 case FILEIO_SEEK_CUR
:
275 case FILEIO_SEEK_END
:
285 remote_fileio_extract_long (char **buf
, LONGEST
*retlong
)
290 if (!buf
|| !*buf
|| !**buf
|| !retlong
)
292 c
= strchr (*buf
, ',');
296 c
= strchr (*buf
, '\0');
297 while (strchr ("+-", **buf
))
303 for (*retlong
= 0; **buf
; ++*buf
)
306 if (**buf
>= '0' && **buf
<= '9')
307 *retlong
+= **buf
- '0';
308 else if (**buf
>= 'a' && **buf
<= 'f')
309 *retlong
+= **buf
- 'a' + 10;
310 else if (**buf
>= 'A' && **buf
<= 'F')
311 *retlong
+= **buf
- 'A' + 10;
321 remote_fileio_extract_int (char **buf
, long *retint
)
328 ret
= remote_fileio_extract_long (buf
, &retlong
);
330 *retint
= (long) retlong
;
335 remote_fileio_extract_ptr_w_len (char **buf
, CORE_ADDR
*ptrval
, int *length
)
340 if (!buf
|| !*buf
|| !**buf
|| !ptrval
|| !length
)
342 c
= strchr (*buf
, '/');
346 if (remote_fileio_extract_long (buf
, &retlong
))
348 *ptrval
= (CORE_ADDR
) retlong
;
350 if (remote_fileio_extract_long (buf
, &retlong
))
352 *length
= (int) retlong
;
356 /* Convert to big endian */
358 remote_fileio_to_be (LONGEST num
, char *buf
, int bytes
)
362 for (i
= 0; i
< bytes
; ++i
)
363 buf
[i
] = (num
>> (8 * (bytes
- i
- 1))) & 0xff;
367 remote_fileio_to_fio_int (long num
, fio_int_t fnum
)
369 remote_fileio_to_be ((LONGEST
) num
, (char *) fnum
, 4);
373 remote_fileio_to_fio_uint (long num
, fio_uint_t fnum
)
375 remote_fileio_to_be ((LONGEST
) num
, (char *) fnum
, 4);
379 remote_fileio_to_fio_mode (mode_t num
, fio_mode_t fnum
)
381 remote_fileio_to_be (remote_fileio_mode_to_target(num
), (char *) fnum
, 4);
385 remote_fileio_to_fio_time (time_t num
, fio_time_t fnum
)
387 remote_fileio_to_be ((LONGEST
) num
, (char *) fnum
, 4);
391 remote_fileio_to_fio_long (LONGEST num
, fio_long_t fnum
)
393 remote_fileio_to_be (num
, (char *) fnum
, 8);
397 remote_fileio_to_fio_ulong (LONGEST num
, fio_ulong_t fnum
)
399 remote_fileio_to_be (num
, (char *) fnum
, 8);
403 remote_fileio_to_fio_stat (struct stat
*st
, struct fio_stat
*fst
)
405 /* `st_dev' is set in the calling function */
406 remote_fileio_to_fio_uint ((long) st
->st_ino
, fst
->fst_ino
);
407 remote_fileio_to_fio_mode (st
->st_mode
, fst
->fst_mode
);
408 remote_fileio_to_fio_uint ((long) st
->st_nlink
, fst
->fst_nlink
);
409 remote_fileio_to_fio_uint ((long) st
->st_uid
, fst
->fst_uid
);
410 remote_fileio_to_fio_uint ((long) st
->st_gid
, fst
->fst_gid
);
411 remote_fileio_to_fio_uint ((long) st
->st_rdev
, fst
->fst_rdev
);
412 remote_fileio_to_fio_ulong ((LONGEST
) st
->st_size
, fst
->fst_size
);
413 remote_fileio_to_fio_ulong ((LONGEST
) st
->st_blksize
, fst
->fst_blksize
);
414 #if HAVE_STRUCT_STAT_ST_BLOCKS
415 remote_fileio_to_fio_ulong ((LONGEST
) st
->st_blocks
, fst
->fst_blocks
);
417 /* FIXME: This is correct for DJGPP, but other systems that don't
418 have st_blocks, if any, might prefer 512 instead of st_blksize.
419 (eliz, 30-12-2003) */
420 remote_fileio_to_fio_ulong (((LONGEST
) st
->st_size
+ st
->st_blksize
- 1)
421 / (LONGEST
) st
->st_blksize
,
424 remote_fileio_to_fio_time (st
->st_atime
, fst
->fst_atime
);
425 remote_fileio_to_fio_time (st
->st_mtime
, fst
->fst_mtime
);
426 remote_fileio_to_fio_time (st
->st_ctime
, fst
->fst_ctime
);
430 remote_fileio_to_fio_timeval (struct timeval
*tv
, struct fio_timeval
*ftv
)
432 remote_fileio_to_fio_time (tv
->tv_sec
, ftv
->ftv_sec
);
433 remote_fileio_to_fio_long (tv
->tv_usec
, ftv
->ftv_usec
);
436 static int remote_fio_ctrl_c_flag
= 0;
437 static int remote_fio_no_longjmp
= 0;
439 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
440 static struct sigaction remote_fio_sa
;
441 static struct sigaction remote_fio_osa
;
443 static void (*remote_fio_ofunc
)(int);
447 remote_fileio_sig_init (void)
449 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
450 remote_fio_sa
.sa_handler
= SIG_IGN
;
451 sigemptyset (&remote_fio_sa
.sa_mask
);
452 remote_fio_sa
.sa_flags
= 0;
453 sigaction (SIGINT
, &remote_fio_sa
, &remote_fio_osa
);
455 remote_fio_ofunc
= signal (SIGINT
, SIG_IGN
);
460 remote_fileio_sig_set (void (*sigint_func
)(int))
462 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
463 remote_fio_sa
.sa_handler
= sigint_func
;
464 sigemptyset (&remote_fio_sa
.sa_mask
);
465 remote_fio_sa
.sa_flags
= 0;
466 sigaction (SIGINT
, &remote_fio_sa
, NULL
);
468 signal (SIGINT
, sigint_func
);
473 remote_fileio_sig_exit (void)
475 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
476 sigaction (SIGINT
, &remote_fio_osa
, NULL
);
478 signal (SIGINT
, remote_fio_ofunc
);
483 remote_fileio_ctrl_c_signal_handler (int signo
)
485 remote_fileio_sig_set (SIG_IGN
);
486 remote_fio_ctrl_c_flag
= 1;
487 if (!remote_fio_no_longjmp
)
488 throw_exception (RETURN_QUIT
);
489 remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler
);
493 remote_fileio_reply (int retcode
, int error
)
497 remote_fileio_sig_set (SIG_IGN
);
504 sprintf (buf
+ strlen (buf
), "%x", retcode
);
505 if (error
|| remote_fio_ctrl_c_flag
)
507 if (error
&& remote_fio_ctrl_c_flag
)
508 error
= FILEIO_EINTR
;
514 sprintf (buf
+ strlen (buf
), ",%x", error
);
515 if (remote_fio_ctrl_c_flag
)
518 remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler
);
523 remote_fileio_ioerror (void)
525 remote_fileio_reply (-1, FILEIO_EIO
);
529 remote_fileio_badfd (void)
531 remote_fileio_reply (-1, FILEIO_EBADF
);
535 remote_fileio_return_errno (int retcode
)
537 remote_fileio_reply (retcode
,
538 retcode
< 0 ? remote_fileio_errno_to_target (errno
) : 0);
542 remote_fileio_return_success (int retcode
)
544 remote_fileio_reply (retcode
, 0);
547 /* Wrapper function for remote_write_bytes() which has the disadvantage to
548 write only one packet, regardless of the requested number of bytes to
549 transfer. This wrapper calls remote_write_bytes() as often as needed. */
551 remote_fileio_write_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
)
553 int ret
= 0, written
;
555 while (len
> 0 && (written
= remote_write_bytes (memaddr
, myaddr
, len
)) > 0)
566 remote_fileio_func_open (char *buf
)
569 int length
, retlength
;
576 /* 1. Parameter: Ptr to pathname / length incl. trailing zero */
577 if (remote_fileio_extract_ptr_w_len (&buf
, &ptrval
, &length
))
579 remote_fileio_ioerror ();
582 /* 2. Parameter: open flags */
583 if (remote_fileio_extract_int (&buf
, &num
))
585 remote_fileio_ioerror ();
588 flags
= remote_fileio_oflags_to_host (num
);
589 /* 3. Parameter: open mode */
590 if (remote_fileio_extract_int (&buf
, &num
))
592 remote_fileio_ioerror ();
595 mode
= remote_fileio_mode_to_host (num
, 1);
597 /* Request pathname using 'm' packet */
598 pathname
= alloca (length
);
599 retlength
= remote_read_bytes (ptrval
, pathname
, length
);
600 if (retlength
!= length
)
602 remote_fileio_ioerror ();
606 /* Check if pathname exists and is not a regular file or directory. If so,
607 return an appropriate error code. Same for trying to open directories
609 if (!stat (pathname
, &st
))
611 if (!S_ISREG (st
.st_mode
) && !S_ISDIR (st
.st_mode
))
613 remote_fileio_reply (-1, FILEIO_ENODEV
);
616 if (S_ISDIR (st
.st_mode
)
617 && ((flags
& O_WRONLY
) == O_WRONLY
|| (flags
& O_RDWR
) == O_RDWR
))
619 remote_fileio_reply (-1, FILEIO_EISDIR
);
624 remote_fio_no_longjmp
= 1;
625 fd
= open (pathname
, flags
, mode
);
628 remote_fileio_return_errno (-1);
632 fd
= remote_fileio_fd_to_targetfd (fd
);
633 remote_fileio_return_success (fd
);
637 remote_fileio_func_close (char *buf
)
642 /* Parameter: file descriptor */
643 if (remote_fileio_extract_int (&buf
, &num
))
645 remote_fileio_ioerror ();
648 fd
= remote_fileio_map_fd ((int) num
);
649 if (fd
== FIO_FD_INVALID
)
651 remote_fileio_badfd ();
655 remote_fio_no_longjmp
= 1;
656 if (fd
!= FIO_FD_CONSOLE_IN
&& fd
!= FIO_FD_CONSOLE_OUT
&& close (fd
))
657 remote_fileio_return_errno (-1);
658 remote_fileio_close_target_fd ((int) num
);
659 remote_fileio_return_success (0);
663 remote_fileio_func_read (char *buf
)
668 int fd
, ret
, retlength
;
671 off_t old_offset
, new_offset
;
673 /* 1. Parameter: file descriptor */
674 if (remote_fileio_extract_int (&buf
, &target_fd
))
676 remote_fileio_ioerror ();
679 fd
= remote_fileio_map_fd ((int) target_fd
);
680 if (fd
== FIO_FD_INVALID
)
682 remote_fileio_badfd ();
685 /* 2. Parameter: buffer pointer */
686 if (remote_fileio_extract_long (&buf
, &lnum
))
688 remote_fileio_ioerror ();
691 ptrval
= (CORE_ADDR
) lnum
;
692 /* 3. Parameter: buffer length */
693 if (remote_fileio_extract_int (&buf
, &num
))
695 remote_fileio_ioerror ();
698 length
= (size_t) num
;
702 case FIO_FD_CONSOLE_OUT
:
703 remote_fileio_badfd ();
705 case FIO_FD_CONSOLE_IN
:
707 static char *remaining_buf
= NULL
;
708 static int remaining_length
= 0;
710 buffer
= (char *) xmalloc (32768);
713 remote_fio_no_longjmp
= 1;
714 if (remaining_length
> length
)
716 memcpy (buffer
, remaining_buf
, length
);
717 memmove (remaining_buf
, remaining_buf
+ length
,
718 remaining_length
- length
);
719 remaining_length
-= length
;
724 memcpy (buffer
, remaining_buf
, remaining_length
);
725 xfree (remaining_buf
);
726 remaining_buf
= NULL
;
727 ret
= remaining_length
;
732 ret
= ui_file_read (gdb_stdtargin
, buffer
, 32767);
733 remote_fio_no_longjmp
= 1;
734 if (ret
> 0 && (size_t)ret
> length
)
736 remaining_buf
= (char *) xmalloc (ret
- length
);
737 remaining_length
= ret
- length
;
738 memcpy (remaining_buf
, buffer
+ length
, remaining_length
);
745 buffer
= (char *) xmalloc (length
);
746 /* POSIX defines EINTR behaviour of read in a weird way. It's allowed
747 for read() to return -1 even if "some" bytes have been read. It
748 has been corrected in SUSv2 but that doesn't help us much...
749 Therefore a complete solution must check how many bytes have been
750 read on EINTR to return a more reliable value to the target */
751 old_offset
= lseek (fd
, 0, SEEK_CUR
);
752 remote_fio_no_longjmp
= 1;
753 ret
= read (fd
, buffer
, length
);
754 if (ret
< 0 && errno
== EINTR
)
756 new_offset
= lseek (fd
, 0, SEEK_CUR
);
757 /* If some data has been read, return the number of bytes read.
758 The Ctrl-C flag is set in remote_fileio_reply() anyway */
759 if (old_offset
!= new_offset
)
760 ret
= new_offset
- old_offset
;
767 retlength
= remote_fileio_write_bytes (ptrval
, buffer
, ret
);
768 if (retlength
!= ret
)
769 ret
= -1; /* errno has been set to EIO in remote_fileio_write_bytes() */
773 remote_fileio_return_errno (-1);
775 remote_fileio_return_success (ret
);
781 remote_fileio_func_write (char *buf
)
786 int fd
, ret
, retlength
;
790 /* 1. Parameter: file descriptor */
791 if (remote_fileio_extract_int (&buf
, &target_fd
))
793 remote_fileio_ioerror ();
796 fd
= remote_fileio_map_fd ((int) target_fd
);
797 if (fd
== FIO_FD_INVALID
)
799 remote_fileio_badfd ();
802 /* 2. Parameter: buffer pointer */
803 if (remote_fileio_extract_long (&buf
, &lnum
))
805 remote_fileio_ioerror ();
808 ptrval
= (CORE_ADDR
) lnum
;
809 /* 3. Parameter: buffer length */
810 if (remote_fileio_extract_int (&buf
, &num
))
812 remote_fileio_ioerror ();
815 length
= (size_t) num
;
817 buffer
= (char *) xmalloc (length
);
818 retlength
= remote_read_bytes (ptrval
, buffer
, length
);
819 if (retlength
!= length
)
822 remote_fileio_ioerror ();
826 remote_fio_no_longjmp
= 1;
829 case FIO_FD_CONSOLE_IN
:
830 remote_fileio_badfd ();
832 case FIO_FD_CONSOLE_OUT
:
833 ui_file_write (target_fd
== 1 ? gdb_stdtarg
: gdb_stdtargerr
, buffer
,
835 gdb_flush (target_fd
== 1 ? gdb_stdtarg
: gdb_stdtargerr
);
839 ret
= write (fd
, buffer
, length
);
840 if (ret
< 0 && errno
== EACCES
)
841 errno
= EBADF
; /* Cygwin returns EACCESS when writing to a R/O file.*/
846 remote_fileio_return_errno (-1);
848 remote_fileio_return_success (ret
);
854 remote_fileio_func_lseek (char *buf
)
861 /* 1. Parameter: file descriptor */
862 if (remote_fileio_extract_int (&buf
, &num
))
864 remote_fileio_ioerror ();
867 fd
= remote_fileio_map_fd ((int) num
);
868 if (fd
== FIO_FD_INVALID
)
870 remote_fileio_badfd ();
873 else if (fd
== FIO_FD_CONSOLE_IN
|| fd
== FIO_FD_CONSOLE_OUT
)
875 remote_fileio_reply (-1, FILEIO_ESPIPE
);
879 /* 2. Parameter: offset */
880 if (remote_fileio_extract_long (&buf
, &lnum
))
882 remote_fileio_ioerror ();
885 offset
= (off_t
) lnum
;
886 /* 3. Parameter: flag */
887 if (remote_fileio_extract_int (&buf
, &num
))
889 remote_fileio_ioerror ();
892 if (remote_fileio_seek_flag_to_host (num
, &flag
))
894 remote_fileio_reply (-1, FILEIO_EINVAL
);
898 remote_fio_no_longjmp
= 1;
899 ret
= lseek (fd
, offset
, flag
);
901 if (ret
== (off_t
) -1)
902 remote_fileio_return_errno (-1);
904 remote_fileio_return_success (ret
);
908 remote_fileio_func_rename (char *buf
)
911 int length
, retlength
;
912 char *oldpath
, *newpath
;
914 struct stat ost
, nst
;
916 /* 1. Parameter: Ptr to oldpath / length incl. trailing zero */
917 if (remote_fileio_extract_ptr_w_len (&buf
, &ptrval
, &length
))
919 remote_fileio_ioerror ();
922 /* Request oldpath using 'm' packet */
923 oldpath
= alloca (length
);
924 retlength
= remote_read_bytes (ptrval
, oldpath
, length
);
925 if (retlength
!= length
)
927 remote_fileio_ioerror ();
930 /* 2. Parameter: Ptr to newpath / length incl. trailing zero */
931 if (remote_fileio_extract_ptr_w_len (&buf
, &ptrval
, &length
))
933 remote_fileio_ioerror ();
936 /* Request newpath using 'm' packet */
937 newpath
= alloca (length
);
938 retlength
= remote_read_bytes (ptrval
, newpath
, length
);
939 if (retlength
!= length
)
941 remote_fileio_ioerror ();
945 /* Only operate on regular files and directories */
946 of
= stat (oldpath
, &ost
);
947 nf
= stat (newpath
, &nst
);
948 if ((!of
&& !S_ISREG (ost
.st_mode
) && !S_ISDIR (ost
.st_mode
))
949 || (!nf
&& !S_ISREG (nst
.st_mode
) && !S_ISDIR (nst
.st_mode
)))
951 remote_fileio_reply (-1, FILEIO_EACCES
);
955 remote_fio_no_longjmp
= 1;
956 ret
= rename (oldpath
, newpath
);
960 /* Special case: newpath is a non-empty directory. Some systems
961 return ENOTEMPTY, some return EEXIST. We coerce that to be
963 if (errno
== ENOTEMPTY
)
966 /* Workaround some Cygwin problems with correct errnos. */
969 if (!of
&& !nf
&& S_ISDIR (nst
.st_mode
))
971 if (S_ISREG (ost
.st_mode
))
975 char oldfullpath
[PATH_MAX
+ 1];
976 char newfullpath
[PATH_MAX
+ 1];
979 cygwin_conv_to_full_posix_path (oldpath
, oldfullpath
);
980 cygwin_conv_to_full_posix_path (newpath
, newfullpath
);
981 len
= strlen (oldfullpath
);
982 if (newfullpath
[len
] == '/'
983 && !strncmp (oldfullpath
, newfullpath
, len
))
992 remote_fileio_return_errno (-1);
995 remote_fileio_return_success (ret
);
999 remote_fileio_func_unlink (char *buf
)
1002 int length
, retlength
;
1007 /* Parameter: Ptr to pathname / length incl. trailing zero */
1008 if (remote_fileio_extract_ptr_w_len (&buf
, &ptrval
, &length
))
1010 remote_fileio_ioerror ();
1013 /* Request pathname using 'm' packet */
1014 pathname
= alloca (length
);
1015 retlength
= remote_read_bytes (ptrval
, pathname
, length
);
1016 if (retlength
!= length
)
1018 remote_fileio_ioerror ();
1022 /* Only operate on regular files (and directories, which allows to return
1023 the correct return code) */
1024 if (!stat (pathname
, &st
) && !S_ISREG (st
.st_mode
) && !S_ISDIR (st
.st_mode
))
1026 remote_fileio_reply (-1, FILEIO_ENODEV
);
1030 remote_fio_no_longjmp
= 1;
1031 ret
= unlink (pathname
);
1034 remote_fileio_return_errno (-1);
1036 remote_fileio_return_success (ret
);
1040 remote_fileio_func_stat (char *buf
)
1043 int ret
, length
, retlength
;
1047 struct fio_stat fst
;
1049 /* 1. Parameter: Ptr to pathname / length incl. trailing zero */
1050 if (remote_fileio_extract_ptr_w_len (&buf
, &ptrval
, &length
))
1052 remote_fileio_ioerror ();
1055 /* Request pathname using 'm' packet */
1056 pathname
= alloca (length
);
1057 retlength
= remote_read_bytes (ptrval
, pathname
, length
);
1058 if (retlength
!= length
)
1060 remote_fileio_ioerror ();
1064 /* 2. Parameter: Ptr to struct stat */
1065 if (remote_fileio_extract_long (&buf
, &lnum
))
1067 remote_fileio_ioerror ();
1070 ptrval
= (CORE_ADDR
) lnum
;
1072 remote_fio_no_longjmp
= 1;
1073 ret
= stat (pathname
, &st
);
1077 remote_fileio_return_errno (-1);
1080 /* Only operate on regular files and directories */
1081 if (!ret
&& !S_ISREG (st
.st_mode
) && !S_ISDIR (st
.st_mode
))
1083 remote_fileio_reply (-1, FILEIO_EACCES
);
1088 remote_fileio_to_fio_stat (&st
, &fst
);
1089 remote_fileio_to_fio_uint (0, fst
.fst_dev
);
1091 retlength
= remote_fileio_write_bytes (ptrval
, (char *) &fst
, sizeof fst
);
1092 if (retlength
!= sizeof fst
)
1094 remote_fileio_return_errno (-1);
1098 remote_fileio_return_success (ret
);
1102 remote_fileio_func_fstat (char *buf
)
1105 int fd
, ret
, retlength
;
1109 struct fio_stat fst
;
1112 /* 1. Parameter: file descriptor */
1113 if (remote_fileio_extract_int (&buf
, &target_fd
))
1115 remote_fileio_ioerror ();
1118 fd
= remote_fileio_map_fd ((int) target_fd
);
1119 if (fd
== FIO_FD_INVALID
)
1121 remote_fileio_badfd ();
1124 /* 2. Parameter: Ptr to struct stat */
1125 if (remote_fileio_extract_long (&buf
, &lnum
))
1127 remote_fileio_ioerror ();
1130 ptrval
= (CORE_ADDR
) lnum
;
1132 remote_fio_no_longjmp
= 1;
1133 if (fd
== FIO_FD_CONSOLE_IN
|| fd
== FIO_FD_CONSOLE_OUT
)
1135 remote_fileio_to_fio_uint (1, fst
.fst_dev
);
1136 st
.st_mode
= S_IFCHR
| (fd
== FIO_FD_CONSOLE_IN
? S_IRUSR
: S_IWUSR
);
1138 st
.st_uid
= getuid ();
1139 st
.st_gid
= getgid ();
1142 st
.st_blksize
= 512;
1143 #if HAVE_STRUCT_STAT_ST_BLOCKS
1146 if (!gettimeofday (&tv
, NULL
))
1147 st
.st_atime
= st
.st_mtime
= st
.st_ctime
= tv
.tv_sec
;
1149 st
.st_atime
= st
.st_mtime
= st
.st_ctime
= (time_t) 0;
1153 ret
= fstat (fd
, &st
);
1157 remote_fileio_return_errno (-1);
1162 remote_fileio_to_fio_stat (&st
, &fst
);
1164 retlength
= remote_fileio_write_bytes (ptrval
, (char *) &fst
, sizeof fst
);
1165 if (retlength
!= sizeof fst
)
1167 remote_fileio_return_errno (-1);
1171 remote_fileio_return_success (ret
);
1175 remote_fileio_func_gettimeofday (char *buf
)
1181 struct fio_timeval ftv
;
1183 /* 1. Parameter: struct timeval pointer */
1184 if (remote_fileio_extract_long (&buf
, &lnum
))
1186 remote_fileio_ioerror ();
1189 ptrval
= (CORE_ADDR
) lnum
;
1190 /* 2. Parameter: some pointer value... */
1191 if (remote_fileio_extract_long (&buf
, &lnum
))
1193 remote_fileio_ioerror ();
1196 /* ...which has to be NULL */
1199 remote_fileio_reply (-1, FILEIO_EINVAL
);
1203 remote_fio_no_longjmp
= 1;
1204 ret
= gettimeofday (&tv
, NULL
);
1208 remote_fileio_return_errno (-1);
1214 remote_fileio_to_fio_timeval (&tv
, &ftv
);
1216 retlength
= remote_fileio_write_bytes (ptrval
, (char *) &ftv
, sizeof ftv
);
1217 if (retlength
!= sizeof ftv
)
1219 remote_fileio_return_errno (-1);
1223 remote_fileio_return_success (ret
);
1227 remote_fileio_func_isatty (char *buf
)
1232 /* Parameter: file descriptor */
1233 if (remote_fileio_extract_int (&buf
, &target_fd
))
1235 remote_fileio_ioerror ();
1238 remote_fio_no_longjmp
= 1;
1239 fd
= remote_fileio_map_fd ((int) target_fd
);
1240 remote_fileio_return_success (fd
== FIO_FD_CONSOLE_IN
||
1241 fd
== FIO_FD_CONSOLE_OUT
? 1 : 0);
1245 remote_fileio_func_system (char *buf
)
1248 int ret
, length
, retlength
;
1251 /* Check if system(3) has been explicitely allowed using the
1252 `set remote system-call-allowed 1' command. If not, return
1254 if (!remote_fio_system_call_allowed
)
1256 remote_fileio_reply (-1, FILEIO_EPERM
);
1260 /* Parameter: Ptr to commandline / length incl. trailing zero */
1261 if (remote_fileio_extract_ptr_w_len (&buf
, &ptrval
, &length
))
1263 remote_fileio_ioerror ();
1266 /* Request commandline using 'm' packet */
1267 cmdline
= alloca (length
);
1268 retlength
= remote_read_bytes (ptrval
, cmdline
, length
);
1269 if (retlength
!= length
)
1271 remote_fileio_ioerror ();
1275 remote_fio_no_longjmp
= 1;
1276 ret
= system (cmdline
);
1279 remote_fileio_return_errno (-1);
1281 remote_fileio_return_success (WEXITSTATUS (ret
));
1286 void (*func
)(char *);
1287 } remote_fio_func_map
[] = {
1288 "open", remote_fileio_func_open
,
1289 "close", remote_fileio_func_close
,
1290 "read", remote_fileio_func_read
,
1291 "write", remote_fileio_func_write
,
1292 "lseek", remote_fileio_func_lseek
,
1293 "rename", remote_fileio_func_rename
,
1294 "unlink", remote_fileio_func_unlink
,
1295 "stat", remote_fileio_func_stat
,
1296 "fstat", remote_fileio_func_fstat
,
1297 "gettimeofday", remote_fileio_func_gettimeofday
,
1298 "isatty", remote_fileio_func_isatty
,
1299 "system", remote_fileio_func_system
,
1304 do_remote_fileio_request (struct ui_out
*uiout
, void *buf_arg
)
1306 char *buf
= buf_arg
;
1310 remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler
);
1312 c
= strchr (++buf
, ',');
1316 c
= strchr (buf
, '\0');
1317 for (idx
= 0; remote_fio_func_map
[idx
].name
; ++idx
)
1318 if (!strcmp (remote_fio_func_map
[idx
].name
, buf
))
1320 if (!remote_fio_func_map
[idx
].name
) /* ERROR: No such function. */
1321 return RETURN_ERROR
;
1322 remote_fio_func_map
[idx
].func (c
);
1327 remote_fileio_request (char *buf
)
1331 remote_fileio_sig_init ();
1333 remote_fio_ctrl_c_flag
= 0;
1334 remote_fio_no_longjmp
= 0;
1336 ex
= catch_exceptions (uiout
, do_remote_fileio_request
, (void *)buf
,
1337 NULL
, RETURN_MASK_ALL
);
1341 remote_fileio_reply (-1, FILEIO_ENOSYS
);
1344 remote_fileio_reply (-1, FILEIO_EINTR
);
1350 remote_fileio_sig_exit ();
1354 set_system_call_allowed (char *args
, int from_tty
)
1359 int val
= strtoul (args
, &arg_end
, 10);
1360 if (*args
&& *arg_end
== '\0')
1362 remote_fio_system_call_allowed
= !!val
;
1366 error ("Illegal argument for \"set remote system-call-allowed\" command");
1370 show_system_call_allowed (char *args
, int from_tty
)
1373 error ("Garbage after \"show remote system-call-allowed\" command: `%s'", args
);
1374 printf_unfiltered ("Calling host system(3) call from target is %sallowed\n",
1375 remote_fio_system_call_allowed
? "" : "not ");
1379 initialize_remote_fileio (struct cmd_list_element
*remote_set_cmdlist
,
1380 struct cmd_list_element
*remote_show_cmdlist
)
1382 add_cmd ("system-call-allowed", no_class
,
1383 set_system_call_allowed
,
1384 "Set if the host system(3) call is allowed for the target.\n",
1385 &remote_set_cmdlist
);
1386 add_cmd ("system-call-allowed", no_class
,
1387 show_system_call_allowed
,
1388 "Show if the host system(3) call is allowed for the target.\n",
1389 &remote_show_cmdlist
);