1 /* Remote File-I/O communications
3 Copyright 2003, 2005 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 "exceptions.h"
32 #include "remote-fileio.h"
37 #include <sys/cygwin.h> /* For cygwin_conv_to_full_posix_path. */
46 #define FIO_FD_INVALID -1
47 #define FIO_FD_CONSOLE_IN -2
48 #define FIO_FD_CONSOLE_OUT -3
50 static int remote_fio_system_call_allowed = 0;
53 remote_fileio_init_fd_map (void)
57 if (!remote_fio_data.fd_map)
59 remote_fio_data.fd_map = (int *) xmalloc (10 * sizeof (int));
60 remote_fio_data.fd_map_size = 10;
61 remote_fio_data.fd_map[0] = FIO_FD_CONSOLE_IN;
62 remote_fio_data.fd_map[1] = FIO_FD_CONSOLE_OUT;
63 remote_fio_data.fd_map[2] = FIO_FD_CONSOLE_OUT;
64 for (i = 3; i < 10; ++i)
65 remote_fio_data.fd_map[i] = FIO_FD_INVALID;
71 remote_fileio_resize_fd_map (void)
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 return remote_fio_data.fd_map_size - 10;
83 remote_fileio_next_free_fd (void)
87 for (i = 0; i < remote_fio_data.fd_map_size; ++i)
88 if (remote_fio_data.fd_map[i] == FIO_FD_INVALID)
90 return remote_fileio_resize_fd_map ();
94 remote_fileio_fd_to_targetfd (int fd)
96 int target_fd = remote_fileio_next_free_fd ();
97 remote_fio_data.fd_map[target_fd] = fd;
102 remote_fileio_map_fd (int target_fd)
104 remote_fileio_init_fd_map ();
105 if (target_fd < 0 || target_fd >= remote_fio_data.fd_map_size)
106 return FIO_FD_INVALID;
107 return remote_fio_data.fd_map[target_fd];
111 remote_fileio_close_target_fd (int target_fd)
113 remote_fileio_init_fd_map ();
114 if (target_fd >= 0 && target_fd < remote_fio_data.fd_map_size)
115 remote_fio_data.fd_map[target_fd] = FIO_FD_INVALID;
119 remote_fileio_oflags_to_host (long flags)
123 if (flags & FILEIO_O_CREAT)
125 if (flags & FILEIO_O_EXCL)
127 if (flags & FILEIO_O_TRUNC)
129 if (flags & FILEIO_O_APPEND)
131 if (flags & FILEIO_O_RDONLY)
133 if (flags & FILEIO_O_WRONLY)
135 if (flags & FILEIO_O_RDWR)
137 /* On systems supporting binary and text mode, always open files in
146 remote_fileio_mode_to_host (long mode, int open_call)
152 if (mode & FILEIO_S_IFREG)
154 if (mode & FILEIO_S_IFDIR)
156 if (mode & FILEIO_S_IFCHR)
159 if (mode & FILEIO_S_IRUSR)
161 if (mode & FILEIO_S_IWUSR)
163 if (mode & FILEIO_S_IXUSR)
166 if (mode & FILEIO_S_IRGRP)
170 if (mode & FILEIO_S_IWGRP)
174 if (mode & FILEIO_S_IXGRP)
177 if (mode & FILEIO_S_IROTH)
180 if (mode & FILEIO_S_IWOTH)
184 if (mode & FILEIO_S_IXOTH)
191 remote_fileio_mode_to_target (mode_t mode)
196 tmode |= FILEIO_S_IFREG;
198 tmode |= FILEIO_S_IFDIR;
200 tmode |= FILEIO_S_IFCHR;
202 tmode |= FILEIO_S_IRUSR;
204 tmode |= FILEIO_S_IWUSR;
206 tmode |= FILEIO_S_IXUSR;
209 tmode |= FILEIO_S_IRGRP;
213 tmode |= FILEIO_S_IWGRP;
217 tmode |= FILEIO_S_IXGRP;
220 tmode |= FILEIO_S_IROTH;
223 tmode |= FILEIO_S_IWOTH;
227 tmode |= FILEIO_S_IXOTH;
233 remote_fileio_errno_to_target (int error)
240 return FILEIO_ENOENT;
248 return FILEIO_EACCES;
250 return FILEIO_EFAULT;
254 return FILEIO_EEXIST;
256 return FILEIO_ENODEV;
258 return FILEIO_ENOTDIR;
260 return FILEIO_EISDIR;
262 return FILEIO_EINVAL;
264 return FILEIO_ENFILE;
266 return FILEIO_EMFILE;
270 return FILEIO_ENOSPC;
272 return FILEIO_ESPIPE;
276 return FILEIO_ENOSYS;
278 return FILEIO_ENAMETOOLONG;
280 return FILEIO_EUNKNOWN;
284 remote_fileio_seek_flag_to_host (long num, int *flag)
290 case FILEIO_SEEK_SET:
293 case FILEIO_SEEK_CUR:
296 case FILEIO_SEEK_END:
306 remote_fileio_extract_long (char **buf, LONGEST *retlong)
311 if (!buf || !*buf || !**buf || !retlong)
313 c = strchr (*buf, ',');
317 c = strchr (*buf, '\0');
318 while (strchr ("+-", **buf))
324 for (*retlong = 0; **buf; ++*buf)
327 if (**buf >= '0' && **buf <= '9')
328 *retlong += **buf - '0';
329 else if (**buf >= 'a' && **buf <= 'f')
330 *retlong += **buf - 'a' + 10;
331 else if (**buf >= 'A' && **buf <= 'F')
332 *retlong += **buf - 'A' + 10;
342 remote_fileio_extract_int (char **buf, long *retint)
349 ret = remote_fileio_extract_long (buf, &retlong);
351 *retint = (long) retlong;
356 remote_fileio_extract_ptr_w_len (char **buf, CORE_ADDR *ptrval, int *length)
361 if (!buf || !*buf || !**buf || !ptrval || !length)
363 c = strchr (*buf, '/');
367 if (remote_fileio_extract_long (buf, &retlong))
369 *ptrval = (CORE_ADDR) retlong;
371 if (remote_fileio_extract_long (buf, &retlong))
373 *length = (int) retlong;
377 /* Convert to big endian */
379 remote_fileio_to_be (LONGEST num, char *buf, int bytes)
383 for (i = 0; i < bytes; ++i)
384 buf[i] = (num >> (8 * (bytes - i - 1))) & 0xff;
388 remote_fileio_to_fio_uint (long num, fio_uint_t fnum)
390 remote_fileio_to_be ((LONGEST) num, (char *) fnum, 4);
394 remote_fileio_to_fio_mode (mode_t num, fio_mode_t fnum)
396 remote_fileio_to_be (remote_fileio_mode_to_target(num), (char *) fnum, 4);
400 remote_fileio_to_fio_time (time_t num, fio_time_t fnum)
402 remote_fileio_to_be ((LONGEST) num, (char *) fnum, 4);
406 remote_fileio_to_fio_long (LONGEST num, fio_long_t fnum)
408 remote_fileio_to_be (num, (char *) fnum, 8);
412 remote_fileio_to_fio_ulong (LONGEST num, fio_ulong_t fnum)
414 remote_fileio_to_be (num, (char *) fnum, 8);
418 remote_fileio_to_fio_stat (struct stat *st, struct fio_stat *fst)
420 /* `st_dev' is set in the calling function */
421 remote_fileio_to_fio_uint ((long) st->st_ino, fst->fst_ino);
422 remote_fileio_to_fio_mode (st->st_mode, fst->fst_mode);
423 remote_fileio_to_fio_uint ((long) st->st_nlink, fst->fst_nlink);
424 remote_fileio_to_fio_uint ((long) st->st_uid, fst->fst_uid);
425 remote_fileio_to_fio_uint ((long) st->st_gid, fst->fst_gid);
426 remote_fileio_to_fio_uint ((long) st->st_rdev, fst->fst_rdev);
427 remote_fileio_to_fio_ulong ((LONGEST) st->st_size, fst->fst_size);
428 remote_fileio_to_fio_ulong ((LONGEST) st->st_blksize, fst->fst_blksize);
429 #if HAVE_STRUCT_STAT_ST_BLOCKS
430 remote_fileio_to_fio_ulong ((LONGEST) st->st_blocks, fst->fst_blocks);
432 /* FIXME: This is correct for DJGPP, but other systems that don't
433 have st_blocks, if any, might prefer 512 instead of st_blksize.
434 (eliz, 30-12-2003) */
435 remote_fileio_to_fio_ulong (((LONGEST) st->st_size + st->st_blksize - 1)
436 / (LONGEST) st->st_blksize,
439 remote_fileio_to_fio_time (st->st_atime, fst->fst_atime);
440 remote_fileio_to_fio_time (st->st_mtime, fst->fst_mtime);
441 remote_fileio_to_fio_time (st->st_ctime, fst->fst_ctime);
445 remote_fileio_to_fio_timeval (struct timeval *tv, struct fio_timeval *ftv)
447 remote_fileio_to_fio_time (tv->tv_sec, ftv->ftv_sec);
448 remote_fileio_to_fio_long (tv->tv_usec, ftv->ftv_usec);
451 static int remote_fio_ctrl_c_flag = 0;
452 static int remote_fio_no_longjmp = 0;
454 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
455 static struct sigaction remote_fio_sa;
456 static struct sigaction remote_fio_osa;
458 static void (*remote_fio_ofunc)(int);
462 remote_fileio_sig_init (void)
464 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
465 remote_fio_sa.sa_handler = SIG_IGN;
466 sigemptyset (&remote_fio_sa.sa_mask);
467 remote_fio_sa.sa_flags = 0;
468 sigaction (SIGINT, &remote_fio_sa, &remote_fio_osa);
470 remote_fio_ofunc = signal (SIGINT, SIG_IGN);
475 remote_fileio_sig_set (void (*sigint_func)(int))
477 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
478 remote_fio_sa.sa_handler = sigint_func;
479 sigemptyset (&remote_fio_sa.sa_mask);
480 remote_fio_sa.sa_flags = 0;
481 sigaction (SIGINT, &remote_fio_sa, NULL);
483 signal (SIGINT, sigint_func);
488 remote_fileio_sig_exit (void)
490 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
491 sigaction (SIGINT, &remote_fio_osa, NULL);
493 signal (SIGINT, remote_fio_ofunc);
498 remote_fileio_ctrl_c_signal_handler (int signo)
500 remote_fileio_sig_set (SIG_IGN);
501 remote_fio_ctrl_c_flag = 1;
502 if (!remote_fio_no_longjmp)
503 deprecated_throw_reason (RETURN_QUIT);
504 remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler);
508 remote_fileio_reply (int retcode, int error)
512 remote_fileio_sig_set (SIG_IGN);
519 sprintf (buf + strlen (buf), "%x", retcode);
520 if (error || remote_fio_ctrl_c_flag)
522 if (error && remote_fio_ctrl_c_flag)
523 error = FILEIO_EINTR;
529 sprintf (buf + strlen (buf), ",%x", error);
530 if (remote_fio_ctrl_c_flag)
533 remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler);
538 remote_fileio_ioerror (void)
540 remote_fileio_reply (-1, FILEIO_EIO);
544 remote_fileio_badfd (void)
546 remote_fileio_reply (-1, FILEIO_EBADF);
550 remote_fileio_return_errno (int retcode)
552 remote_fileio_reply (retcode,
553 retcode < 0 ? remote_fileio_errno_to_target (errno) : 0);
557 remote_fileio_return_success (int retcode)
559 remote_fileio_reply (retcode, 0);
562 /* Wrapper function for remote_write_bytes() which has the disadvantage to
563 write only one packet, regardless of the requested number of bytes to
564 transfer. This wrapper calls remote_write_bytes() as often as needed. */
566 remote_fileio_write_bytes (CORE_ADDR memaddr, char *myaddr, int len)
568 int ret = 0, written;
570 while (len > 0 && (written = remote_write_bytes (memaddr, myaddr, len)) > 0)
581 remote_fileio_func_open (char *buf)
584 int length, retlength;
591 /* 1. Parameter: Ptr to pathname / length incl. trailing zero */
592 if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length))
594 remote_fileio_ioerror ();
597 /* 2. Parameter: open flags */
598 if (remote_fileio_extract_int (&buf, &num))
600 remote_fileio_ioerror ();
603 flags = remote_fileio_oflags_to_host (num);
604 /* 3. Parameter: open mode */
605 if (remote_fileio_extract_int (&buf, &num))
607 remote_fileio_ioerror ();
610 mode = remote_fileio_mode_to_host (num, 1);
612 /* Request pathname using 'm' packet */
613 pathname = alloca (length);
614 retlength = remote_read_bytes (ptrval, pathname, length);
615 if (retlength != length)
617 remote_fileio_ioerror ();
621 /* Check if pathname exists and is not a regular file or directory. If so,
622 return an appropriate error code. Same for trying to open directories
624 if (!stat (pathname, &st))
626 if (!S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode))
628 remote_fileio_reply (-1, FILEIO_ENODEV);
631 if (S_ISDIR (st.st_mode)
632 && ((flags & O_WRONLY) == O_WRONLY || (flags & O_RDWR) == O_RDWR))
634 remote_fileio_reply (-1, FILEIO_EISDIR);
639 remote_fio_no_longjmp = 1;
640 fd = open (pathname, flags, mode);
643 remote_fileio_return_errno (-1);
647 fd = remote_fileio_fd_to_targetfd (fd);
648 remote_fileio_return_success (fd);
652 remote_fileio_func_close (char *buf)
657 /* Parameter: file descriptor */
658 if (remote_fileio_extract_int (&buf, &num))
660 remote_fileio_ioerror ();
663 fd = remote_fileio_map_fd ((int) num);
664 if (fd == FIO_FD_INVALID)
666 remote_fileio_badfd ();
670 remote_fio_no_longjmp = 1;
671 if (fd != FIO_FD_CONSOLE_IN && fd != FIO_FD_CONSOLE_OUT && close (fd))
672 remote_fileio_return_errno (-1);
673 remote_fileio_close_target_fd ((int) num);
674 remote_fileio_return_success (0);
678 remote_fileio_func_read (char *buf)
683 int fd, ret, retlength;
686 off_t old_offset, new_offset;
688 /* 1. Parameter: file descriptor */
689 if (remote_fileio_extract_int (&buf, &target_fd))
691 remote_fileio_ioerror ();
694 fd = remote_fileio_map_fd ((int) target_fd);
695 if (fd == FIO_FD_INVALID)
697 remote_fileio_badfd ();
700 /* 2. Parameter: buffer pointer */
701 if (remote_fileio_extract_long (&buf, &lnum))
703 remote_fileio_ioerror ();
706 ptrval = (CORE_ADDR) lnum;
707 /* 3. Parameter: buffer length */
708 if (remote_fileio_extract_int (&buf, &num))
710 remote_fileio_ioerror ();
713 length = (size_t) num;
717 case FIO_FD_CONSOLE_OUT:
718 remote_fileio_badfd ();
720 case FIO_FD_CONSOLE_IN:
722 static char *remaining_buf = NULL;
723 static int remaining_length = 0;
725 buffer = (char *) xmalloc (32768);
728 remote_fio_no_longjmp = 1;
729 if (remaining_length > length)
731 memcpy (buffer, remaining_buf, length);
732 memmove (remaining_buf, remaining_buf + length,
733 remaining_length - length);
734 remaining_length -= length;
739 memcpy (buffer, remaining_buf, remaining_length);
740 xfree (remaining_buf);
741 remaining_buf = NULL;
742 ret = remaining_length;
747 ret = ui_file_read (gdb_stdtargin, buffer, 32767);
748 remote_fio_no_longjmp = 1;
749 if (ret > 0 && (size_t)ret > length)
751 remaining_buf = (char *) xmalloc (ret - length);
752 remaining_length = ret - length;
753 memcpy (remaining_buf, buffer + length, remaining_length);
760 buffer = (char *) xmalloc (length);
761 /* POSIX defines EINTR behaviour of read in a weird way. It's allowed
762 for read() to return -1 even if "some" bytes have been read. It
763 has been corrected in SUSv2 but that doesn't help us much...
764 Therefore a complete solution must check how many bytes have been
765 read on EINTR to return a more reliable value to the target */
766 old_offset = lseek (fd, 0, SEEK_CUR);
767 remote_fio_no_longjmp = 1;
768 ret = read (fd, buffer, length);
769 if (ret < 0 && errno == EINTR)
771 new_offset = lseek (fd, 0, SEEK_CUR);
772 /* If some data has been read, return the number of bytes read.
773 The Ctrl-C flag is set in remote_fileio_reply() anyway */
774 if (old_offset != new_offset)
775 ret = new_offset - old_offset;
782 retlength = remote_fileio_write_bytes (ptrval, buffer, ret);
783 if (retlength != ret)
784 ret = -1; /* errno has been set to EIO in remote_fileio_write_bytes() */
788 remote_fileio_return_errno (-1);
790 remote_fileio_return_success (ret);
796 remote_fileio_func_write (char *buf)
801 int fd, ret, retlength;
805 /* 1. Parameter: file descriptor */
806 if (remote_fileio_extract_int (&buf, &target_fd))
808 remote_fileio_ioerror ();
811 fd = remote_fileio_map_fd ((int) target_fd);
812 if (fd == FIO_FD_INVALID)
814 remote_fileio_badfd ();
817 /* 2. Parameter: buffer pointer */
818 if (remote_fileio_extract_long (&buf, &lnum))
820 remote_fileio_ioerror ();
823 ptrval = (CORE_ADDR) lnum;
824 /* 3. Parameter: buffer length */
825 if (remote_fileio_extract_int (&buf, &num))
827 remote_fileio_ioerror ();
830 length = (size_t) num;
832 buffer = (char *) xmalloc (length);
833 retlength = remote_read_bytes (ptrval, buffer, length);
834 if (retlength != length)
837 remote_fileio_ioerror ();
841 remote_fio_no_longjmp = 1;
844 case FIO_FD_CONSOLE_IN:
845 remote_fileio_badfd ();
847 case FIO_FD_CONSOLE_OUT:
848 ui_file_write (target_fd == 1 ? gdb_stdtarg : gdb_stdtargerr, buffer,
850 gdb_flush (target_fd == 1 ? gdb_stdtarg : gdb_stdtargerr);
854 ret = write (fd, buffer, length);
855 if (ret < 0 && errno == EACCES)
856 errno = EBADF; /* Cygwin returns EACCESS when writing to a R/O file.*/
861 remote_fileio_return_errno (-1);
863 remote_fileio_return_success (ret);
869 remote_fileio_func_lseek (char *buf)
876 /* 1. Parameter: file descriptor */
877 if (remote_fileio_extract_int (&buf, &num))
879 remote_fileio_ioerror ();
882 fd = remote_fileio_map_fd ((int) num);
883 if (fd == FIO_FD_INVALID)
885 remote_fileio_badfd ();
888 else if (fd == FIO_FD_CONSOLE_IN || fd == FIO_FD_CONSOLE_OUT)
890 remote_fileio_reply (-1, FILEIO_ESPIPE);
894 /* 2. Parameter: offset */
895 if (remote_fileio_extract_long (&buf, &lnum))
897 remote_fileio_ioerror ();
900 offset = (off_t) lnum;
901 /* 3. Parameter: flag */
902 if (remote_fileio_extract_int (&buf, &num))
904 remote_fileio_ioerror ();
907 if (remote_fileio_seek_flag_to_host (num, &flag))
909 remote_fileio_reply (-1, FILEIO_EINVAL);
913 remote_fio_no_longjmp = 1;
914 ret = lseek (fd, offset, flag);
916 if (ret == (off_t) -1)
917 remote_fileio_return_errno (-1);
919 remote_fileio_return_success (ret);
923 remote_fileio_func_rename (char *buf)
926 int length, retlength;
927 char *oldpath, *newpath;
929 struct stat ost, nst;
931 /* 1. Parameter: Ptr to oldpath / length incl. trailing zero */
932 if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length))
934 remote_fileio_ioerror ();
937 /* Request oldpath using 'm' packet */
938 oldpath = alloca (length);
939 retlength = remote_read_bytes (ptrval, oldpath, length);
940 if (retlength != length)
942 remote_fileio_ioerror ();
945 /* 2. Parameter: Ptr to newpath / length incl. trailing zero */
946 if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length))
948 remote_fileio_ioerror ();
951 /* Request newpath using 'm' packet */
952 newpath = alloca (length);
953 retlength = remote_read_bytes (ptrval, newpath, length);
954 if (retlength != length)
956 remote_fileio_ioerror ();
960 /* Only operate on regular files and directories */
961 of = stat (oldpath, &ost);
962 nf = stat (newpath, &nst);
963 if ((!of && !S_ISREG (ost.st_mode) && !S_ISDIR (ost.st_mode))
964 || (!nf && !S_ISREG (nst.st_mode) && !S_ISDIR (nst.st_mode)))
966 remote_fileio_reply (-1, FILEIO_EACCES);
970 remote_fio_no_longjmp = 1;
971 ret = rename (oldpath, newpath);
975 /* Special case: newpath is a non-empty directory. Some systems
976 return ENOTEMPTY, some return EEXIST. We coerce that to be
978 if (errno == ENOTEMPTY)
981 /* Workaround some Cygwin problems with correct errnos. */
984 if (!of && !nf && S_ISDIR (nst.st_mode))
986 if (S_ISREG (ost.st_mode))
990 char oldfullpath[PATH_MAX + 1];
991 char newfullpath[PATH_MAX + 1];
994 cygwin_conv_to_full_posix_path (oldpath, oldfullpath);
995 cygwin_conv_to_full_posix_path (newpath, newfullpath);
996 len = strlen (oldfullpath);
997 if (newfullpath[len] == '/'
998 && !strncmp (oldfullpath, newfullpath, len))
1007 remote_fileio_return_errno (-1);
1010 remote_fileio_return_success (ret);
1014 remote_fileio_func_unlink (char *buf)
1017 int length, retlength;
1022 /* Parameter: Ptr to pathname / length incl. trailing zero */
1023 if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length))
1025 remote_fileio_ioerror ();
1028 /* Request pathname using 'm' packet */
1029 pathname = alloca (length);
1030 retlength = remote_read_bytes (ptrval, pathname, length);
1031 if (retlength != length)
1033 remote_fileio_ioerror ();
1037 /* Only operate on regular files (and directories, which allows to return
1038 the correct return code) */
1039 if (!stat (pathname, &st) && !S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode))
1041 remote_fileio_reply (-1, FILEIO_ENODEV);
1045 remote_fio_no_longjmp = 1;
1046 ret = unlink (pathname);
1049 remote_fileio_return_errno (-1);
1051 remote_fileio_return_success (ret);
1055 remote_fileio_func_stat (char *buf)
1058 int ret, length, retlength;
1062 struct fio_stat fst;
1064 /* 1. Parameter: Ptr to pathname / length incl. trailing zero */
1065 if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length))
1067 remote_fileio_ioerror ();
1070 /* Request pathname using 'm' packet */
1071 pathname = alloca (length);
1072 retlength = remote_read_bytes (ptrval, pathname, length);
1073 if (retlength != length)
1075 remote_fileio_ioerror ();
1079 /* 2. Parameter: Ptr to struct stat */
1080 if (remote_fileio_extract_long (&buf, &lnum))
1082 remote_fileio_ioerror ();
1085 ptrval = (CORE_ADDR) lnum;
1087 remote_fio_no_longjmp = 1;
1088 ret = stat (pathname, &st);
1092 remote_fileio_return_errno (-1);
1095 /* Only operate on regular files and directories */
1096 if (!ret && !S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode))
1098 remote_fileio_reply (-1, FILEIO_EACCES);
1103 remote_fileio_to_fio_stat (&st, &fst);
1104 remote_fileio_to_fio_uint (0, fst.fst_dev);
1106 retlength = remote_fileio_write_bytes (ptrval, (char *) &fst, sizeof fst);
1107 if (retlength != sizeof fst)
1109 remote_fileio_return_errno (-1);
1113 remote_fileio_return_success (ret);
1117 remote_fileio_func_fstat (char *buf)
1120 int fd, ret, retlength;
1124 struct fio_stat fst;
1127 /* 1. Parameter: file descriptor */
1128 if (remote_fileio_extract_int (&buf, &target_fd))
1130 remote_fileio_ioerror ();
1133 fd = remote_fileio_map_fd ((int) target_fd);
1134 if (fd == FIO_FD_INVALID)
1136 remote_fileio_badfd ();
1139 /* 2. Parameter: Ptr to struct stat */
1140 if (remote_fileio_extract_long (&buf, &lnum))
1142 remote_fileio_ioerror ();
1145 ptrval = (CORE_ADDR) lnum;
1147 remote_fio_no_longjmp = 1;
1148 if (fd == FIO_FD_CONSOLE_IN || fd == FIO_FD_CONSOLE_OUT)
1150 remote_fileio_to_fio_uint (1, fst.fst_dev);
1151 st.st_mode = S_IFCHR | (fd == FIO_FD_CONSOLE_IN ? S_IRUSR : S_IWUSR);
1153 st.st_uid = getuid ();
1154 st.st_gid = getgid ();
1157 st.st_blksize = 512;
1158 #if HAVE_STRUCT_STAT_ST_BLOCKS
1161 if (!gettimeofday (&tv, NULL))
1162 st.st_atime = st.st_mtime = st.st_ctime = tv.tv_sec;
1164 st.st_atime = st.st_mtime = st.st_ctime = (time_t) 0;
1168 ret = fstat (fd, &st);
1172 remote_fileio_return_errno (-1);
1177 remote_fileio_to_fio_stat (&st, &fst);
1179 retlength = remote_fileio_write_bytes (ptrval, (char *) &fst, sizeof fst);
1180 if (retlength != sizeof fst)
1182 remote_fileio_return_errno (-1);
1186 remote_fileio_return_success (ret);
1190 remote_fileio_func_gettimeofday (char *buf)
1196 struct fio_timeval ftv;
1198 /* 1. Parameter: struct timeval pointer */
1199 if (remote_fileio_extract_long (&buf, &lnum))
1201 remote_fileio_ioerror ();
1204 ptrval = (CORE_ADDR) lnum;
1205 /* 2. Parameter: some pointer value... */
1206 if (remote_fileio_extract_long (&buf, &lnum))
1208 remote_fileio_ioerror ();
1211 /* ...which has to be NULL */
1214 remote_fileio_reply (-1, FILEIO_EINVAL);
1218 remote_fio_no_longjmp = 1;
1219 ret = gettimeofday (&tv, NULL);
1223 remote_fileio_return_errno (-1);
1229 remote_fileio_to_fio_timeval (&tv, &ftv);
1231 retlength = remote_fileio_write_bytes (ptrval, (char *) &ftv, sizeof ftv);
1232 if (retlength != sizeof ftv)
1234 remote_fileio_return_errno (-1);
1238 remote_fileio_return_success (ret);
1242 remote_fileio_func_isatty (char *buf)
1247 /* Parameter: file descriptor */
1248 if (remote_fileio_extract_int (&buf, &target_fd))
1250 remote_fileio_ioerror ();
1253 remote_fio_no_longjmp = 1;
1254 fd = remote_fileio_map_fd ((int) target_fd);
1255 remote_fileio_return_success (fd == FIO_FD_CONSOLE_IN ||
1256 fd == FIO_FD_CONSOLE_OUT ? 1 : 0);
1260 remote_fileio_func_system (char *buf)
1263 int ret, length, retlength;
1266 /* Check if system(3) has been explicitely allowed using the
1267 `set remote system-call-allowed 1' command. If not, return
1269 if (!remote_fio_system_call_allowed)
1271 remote_fileio_reply (-1, FILEIO_EPERM);
1275 /* Parameter: Ptr to commandline / length incl. trailing zero */
1276 if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length))
1278 remote_fileio_ioerror ();
1281 /* Request commandline using 'm' packet */
1282 cmdline = alloca (length);
1283 retlength = remote_read_bytes (ptrval, cmdline, length);
1284 if (retlength != length)
1286 remote_fileio_ioerror ();
1290 remote_fio_no_longjmp = 1;
1291 ret = system (cmdline);
1294 remote_fileio_return_errno (-1);
1296 remote_fileio_return_success (WEXITSTATUS (ret));
1301 void (*func)(char *);
1302 } remote_fio_func_map[] = {
1303 "open", remote_fileio_func_open,
1304 "close", remote_fileio_func_close,
1305 "read", remote_fileio_func_read,
1306 "write", remote_fileio_func_write,
1307 "lseek", remote_fileio_func_lseek,
1308 "rename", remote_fileio_func_rename,
1309 "unlink", remote_fileio_func_unlink,
1310 "stat", remote_fileio_func_stat,
1311 "fstat", remote_fileio_func_fstat,
1312 "gettimeofday", remote_fileio_func_gettimeofday,
1313 "isatty", remote_fileio_func_isatty,
1314 "system", remote_fileio_func_system,
1319 do_remote_fileio_request (struct ui_out *uiout, void *buf_arg)
1321 char *buf = buf_arg;
1325 remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler);
1327 c = strchr (++buf, ',');
1331 c = strchr (buf, '\0');
1332 for (idx = 0; remote_fio_func_map[idx].name; ++idx)
1333 if (!strcmp (remote_fio_func_map[idx].name, buf))
1335 if (!remote_fio_func_map[idx].name) /* ERROR: No such function. */
1336 return RETURN_ERROR;
1337 remote_fio_func_map[idx].func (c);
1342 remote_fileio_request (char *buf)
1346 remote_fileio_sig_init ();
1348 remote_fio_ctrl_c_flag = 0;
1349 remote_fio_no_longjmp = 0;
1351 ex = catch_exceptions (uiout, do_remote_fileio_request, (void *)buf,
1356 remote_fileio_reply (-1, FILEIO_ENOSYS);
1359 remote_fileio_reply (-1, FILEIO_EINTR);
1365 remote_fileio_sig_exit ();
1369 set_system_call_allowed (char *args, int from_tty)
1374 int val = strtoul (args, &arg_end, 10);
1375 if (*args && *arg_end == '\0')
1377 remote_fio_system_call_allowed = !!val;
1381 error (_("Illegal argument for \"set remote system-call-allowed\" command"));
1385 show_system_call_allowed (char *args, int from_tty)
1388 error (_("Garbage after \"show remote system-call-allowed\" command: `%s'"), args);
1389 printf_unfiltered ("Calling host system(3) call from target is %sallowed\n",
1390 remote_fio_system_call_allowed ? "" : "not ");
1394 initialize_remote_fileio (struct cmd_list_element *remote_set_cmdlist,
1395 struct cmd_list_element *remote_show_cmdlist)
1397 add_cmd ("system-call-allowed", no_class,
1398 set_system_call_allowed,
1399 _("Set if the host system(3) call is allowed for the target."),
1400 &remote_set_cmdlist);
1401 add_cmd ("system-call-allowed", no_class,
1402 show_system_call_allowed,
1403 _("Show if the host system(3) call is allowed for the target."),
1404 &remote_show_cmdlist);