/* Remote File-I/O communications
- Copyright 2003, 2005 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2005, 2006, 2007 Free Software Foundation, Inc.
This file is part of GDB.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA. */
/* See the GDB User Guide for details of the GDB remote protocol. */
{
mode_t tmode = 0;
- if (mode & S_IFREG)
+ if (S_ISREG(mode))
tmode |= FILEIO_S_IFREG;
- if (mode & S_IFDIR)
+ if (S_ISDIR(mode))
tmode |= FILEIO_S_IFDIR;
- if (mode & S_IFCHR)
+ if (S_ISCHR(mode))
tmode |= FILEIO_S_IFCHR;
if (mode & S_IRUSR)
tmode |= FILEIO_S_IRUSR;
write only one packet, regardless of the requested number of bytes to
transfer. This wrapper calls remote_write_bytes() as often as needed. */
static int
-remote_fileio_write_bytes (CORE_ADDR memaddr, char *myaddr, int len)
+remote_fileio_write_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len)
{
int ret = 0, written;
/* Request pathname using 'm' packet */
pathname = alloca (length);
- retlength = remote_read_bytes (ptrval, pathname, length);
+ retlength = remote_read_bytes (ptrval, (gdb_byte *) pathname, length);
if (retlength != length)
{
remote_fileio_ioerror ();
LONGEST lnum;
CORE_ADDR ptrval;
int fd, ret, retlength;
- char *buffer;
+ gdb_byte *buffer;
size_t length;
off_t old_offset, new_offset;
static char *remaining_buf = NULL;
static int remaining_length = 0;
- buffer = (char *) xmalloc (32768);
+ buffer = (gdb_byte *) xmalloc (32768);
if (remaining_buf)
{
remote_fio_no_longjmp = 1;
}
else
{
- ret = ui_file_read (gdb_stdtargin, buffer, 32767);
+ ret = ui_file_read (gdb_stdtargin, (char *) buffer, 32767);
remote_fio_no_longjmp = 1;
if (ret > 0 && (size_t)ret > length)
{
}
break;
default:
- buffer = (char *) xmalloc (length);
+ buffer = (gdb_byte *) xmalloc (length);
/* POSIX defines EINTR behaviour of read in a weird way. It's allowed
for read() to return -1 even if "some" bytes have been read. It
has been corrected in SUSv2 but that doesn't help us much...
LONGEST lnum;
CORE_ADDR ptrval;
int fd, ret, retlength;
- char *buffer;
+ gdb_byte *buffer;
size_t length;
/* 1. Parameter: file descriptor */
}
length = (size_t) num;
- buffer = (char *) xmalloc (length);
+ buffer = (gdb_byte *) xmalloc (length);
retlength = remote_read_bytes (ptrval, buffer, length);
if (retlength != length)
{
remote_fileio_badfd ();
return;
case FIO_FD_CONSOLE_OUT:
- ui_file_write (target_fd == 1 ? gdb_stdtarg : gdb_stdtargerr, buffer,
- length);
+ ui_file_write (target_fd == 1 ? gdb_stdtarg : gdb_stdtargerr,
+ (char *) buffer, length);
gdb_flush (target_fd == 1 ? gdb_stdtarg : gdb_stdtargerr);
ret = length;
break;
static void
remote_fileio_func_rename (char *buf)
{
- CORE_ADDR ptrval;
- int length, retlength;
+ CORE_ADDR old_ptr, new_ptr;
+ int old_len, new_len, retlength;
char *oldpath, *newpath;
int ret, of, nf;
struct stat ost, nst;
/* 1. Parameter: Ptr to oldpath / length incl. trailing zero */
- if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length))
+ if (remote_fileio_extract_ptr_w_len (&buf, &old_ptr, &old_len))
{
remote_fileio_ioerror ();
return;
}
- /* Request oldpath using 'm' packet */
- oldpath = alloca (length);
- retlength = remote_read_bytes (ptrval, oldpath, length);
- if (retlength != length)
+
+ /* 2. Parameter: Ptr to newpath / length incl. trailing zero */
+ if (remote_fileio_extract_ptr_w_len (&buf, &new_ptr, &new_len))
{
remote_fileio_ioerror ();
return;
}
- /* 2. Parameter: Ptr to newpath / length incl. trailing zero */
- if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length))
+
+ /* Request oldpath using 'm' packet */
+ oldpath = alloca (old_len);
+ retlength = remote_read_bytes (old_ptr, (gdb_byte *) oldpath, old_len);
+ if (retlength != old_len)
{
remote_fileio_ioerror ();
return;
}
+
/* Request newpath using 'm' packet */
- newpath = alloca (length);
- retlength = remote_read_bytes (ptrval, newpath, length);
- if (retlength != length)
+ newpath = alloca (new_len);
+ retlength = remote_read_bytes (new_ptr, (gdb_byte *) newpath, new_len);
+ if (retlength != new_len)
{
remote_fileio_ioerror ();
return;
}
/* Request pathname using 'm' packet */
pathname = alloca (length);
- retlength = remote_read_bytes (ptrval, pathname, length);
+ retlength = remote_read_bytes (ptrval, (gdb_byte *) pathname, length);
if (retlength != length)
{
remote_fileio_ioerror ();
static void
remote_fileio_func_stat (char *buf)
{
- CORE_ADDR ptrval;
- int ret, length, retlength;
+ CORE_ADDR statptr, nameptr;
+ int ret, namelength, retlength;
char *pathname;
LONGEST lnum;
struct stat st;
struct fio_stat fst;
/* 1. Parameter: Ptr to pathname / length incl. trailing zero */
- if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length))
+ if (remote_fileio_extract_ptr_w_len (&buf, &nameptr, &namelength))
{
remote_fileio_ioerror ();
return;
}
- /* Request pathname using 'm' packet */
- pathname = alloca (length);
- retlength = remote_read_bytes (ptrval, pathname, length);
- if (retlength != length)
+
+ /* 2. Parameter: Ptr to struct stat */
+ if (remote_fileio_extract_long (&buf, &lnum))
{
remote_fileio_ioerror ();
return;
}
-
- /* 2. Parameter: Ptr to struct stat */
- if (remote_fileio_extract_long (&buf, &lnum))
+ statptr = (CORE_ADDR) lnum;
+
+ /* Request pathname using 'm' packet */
+ pathname = alloca (namelength);
+ retlength = remote_read_bytes (nameptr, (gdb_byte *) pathname, namelength);
+ if (retlength != namelength)
{
remote_fileio_ioerror ();
return;
}
- ptrval = (CORE_ADDR) lnum;
remote_fio_no_longjmp = 1;
ret = stat (pathname, &st);
remote_fileio_reply (-1, FILEIO_EACCES);
return;
}
- if (ptrval)
+ if (statptr)
{
remote_fileio_to_fio_stat (&st, &fst);
remote_fileio_to_fio_uint (0, fst.fst_dev);
- retlength = remote_fileio_write_bytes (ptrval, (char *) &fst, sizeof fst);
+ retlength = remote_fileio_write_bytes (statptr,
+ (gdb_byte *) &fst, sizeof fst);
if (retlength != sizeof fst)
{
remote_fileio_return_errno (-1);
{
remote_fileio_to_fio_stat (&st, &fst);
- retlength = remote_fileio_write_bytes (ptrval, (char *) &fst, sizeof fst);
+ retlength = remote_fileio_write_bytes (ptrval, (gdb_byte *) &fst, sizeof fst);
if (retlength != sizeof fst)
{
remote_fileio_return_errno (-1);
{
remote_fileio_to_fio_timeval (&tv, &ftv);
- retlength = remote_fileio_write_bytes (ptrval, (char *) &ftv, sizeof ftv);
+ retlength = remote_fileio_write_bytes (ptrval, (gdb_byte *) &ftv, sizeof ftv);
if (retlength != sizeof ftv)
{
remote_fileio_return_errno (-1);
{
CORE_ADDR ptrval;
int ret, length, retlength;
- char *cmdline;
-
- /* Check if system(3) has been explicitely allowed using the
- `set remote system-call-allowed 1' command. If not, return
- EPERM */
- if (!remote_fio_system_call_allowed)
- {
- remote_fileio_reply (-1, FILEIO_EPERM);
- return;
- }
+ char *cmdline = NULL;
/* Parameter: Ptr to commandline / length incl. trailing zero */
if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length))
remote_fileio_ioerror ();
return;
}
- /* Request commandline using 'm' packet */
- cmdline = alloca (length);
- retlength = remote_read_bytes (ptrval, cmdline, length);
- if (retlength != length)
+
+ if (length)
{
- remote_fileio_ioerror ();
+ /* Request commandline using 'm' packet */
+ cmdline = alloca (length);
+ retlength = remote_read_bytes (ptrval, (gdb_byte *) cmdline, length);
+ if (retlength != length)
+ {
+ remote_fileio_ioerror ();
+ return;
+ }
+ }
+
+ /* Check if system(3) has been explicitely allowed using the
+ `set remote system-call-allowed 1' command. If length is 0,
+ indicating a NULL parameter to the system call, return zero to
+ indicate a shell is not available. Otherwise fail with EPERM. */
+ if (!remote_fio_system_call_allowed)
+ {
+ if (!length)
+ remote_fileio_return_success (0);
+ else
+ remote_fileio_reply (-1, FILEIO_EPERM);
return;
}
remote_fio_no_longjmp = 1;
ret = system (cmdline);
- if (ret == -1)
+ if (!length)
+ remote_fileio_return_success (ret);
+ else if (ret == -1)
remote_fileio_return_errno (-1);
else
remote_fileio_return_success (WEXITSTATUS (ret));
char *name;
void (*func)(char *);
} remote_fio_func_map[] = {
- "open", remote_fileio_func_open,
- "close", remote_fileio_func_close,
- "read", remote_fileio_func_read,
- "write", remote_fileio_func_write,
- "lseek", remote_fileio_func_lseek,
- "rename", remote_fileio_func_rename,
- "unlink", remote_fileio_func_unlink,
- "stat", remote_fileio_func_stat,
- "fstat", remote_fileio_func_fstat,
- "gettimeofday", remote_fileio_func_gettimeofday,
- "isatty", remote_fileio_func_isatty,
- "system", remote_fileio_func_system,
- NULL, NULL
+ { "open", remote_fileio_func_open },
+ { "close", remote_fileio_func_close },
+ { "read", remote_fileio_func_read },
+ { "write", remote_fileio_func_write },
+ { "lseek", remote_fileio_func_lseek },
+ { "rename", remote_fileio_func_rename },
+ { "unlink", remote_fileio_func_unlink },
+ { "stat", remote_fileio_func_stat },
+ { "fstat", remote_fileio_func_fstat },
+ { "gettimeofday", remote_fileio_func_gettimeofday },
+ { "isatty", remote_fileio_func_isatty },
+ { "system", remote_fileio_func_system },
+ { NULL, NULL }
};
static int
return 0;
}
+/* Close any open descriptors, and reinitialize the file mapping. */
+
+void
+remote_fileio_reset (void)
+{
+ int ix;
+
+ for (ix = 0; ix != remote_fio_data.fd_map_size; ix++)
+ {
+ int fd = remote_fio_data.fd_map[ix];
+
+ if (fd >= 0)
+ close (fd);
+ }
+ if (remote_fio_data.fd_map)
+ {
+ free (remote_fio_data.fd_map);
+ remote_fio_data.fd_map = NULL;
+ remote_fio_data.fd_map_size = 0;
+ }
+}
+
void
remote_fileio_request (char *buf)
{