Introduce target_fileio_fstat

This commit introduces a new target method target_fileio_fstat
which can be used to retrieve information about files opened with
target_fileio_open.

gdb/ChangeLog:

	* target.h (struct target_ops) <to_fileio_fstat>: New field.
	(target_fileio_fstat): New declaration.
	* target.c (target_fileio_fstat): New function.
	* inf-child.c (inf_child_fileio_fstat): Likewise.
	(inf_child_target): Initialize to_fileio_fstat.
	* remote.c (init_remote_ops): Likewise.

1 files changed, 12 insertions, 0 deletions

diff --git a/gdb/target.h b/gdb/target.h
index 19254d6..c4440ce 100644
--- a/gdb/target.h
+++ b/gdb/target.h
@@ -846,6 +846,12 @@ struct target_ops
 			    int fd, gdb_byte *read_buf, int len,
 			    ULONGEST offset, int *target_errno);
 
+    /* Get information about the file opened as FD and put it in
+       SB.  Return 0 on success, or -1 if an error occurs (and set
+       *TARGET_ERRNO).  */
+    int (*to_fileio_fstat) (struct target_ops *,
+			    int fd, struct stat *sb, int *target_errno);
+
     /* Close FD on the target.  Return 0, or -1 if an error occurs
        (and set *TARGET_ERRNO).  */
     int (*to_fileio_close) (struct target_ops *, int fd, int *target_errno);
@@ -1933,6 +1939,12 @@ extern int target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len,
 extern int target_fileio_pread (int fd, gdb_byte *read_buf, int len,
 				ULONGEST offset, int *target_errno);
 
+/* Get information about the file opened as FD on the target
+   and put it in SB.  Return 0 on success, or -1 if an error
+   occurs (and set *TARGET_ERRNO).  */
+extern int target_fileio_fstat (int fd, struct stat *sb,
+				int *target_errno);
+
 /* Close FD on the target.  Return 0, or -1 if an error occurs
    (and set *TARGET_ERRNO).  */
 extern int target_fileio_close (int fd, int *target_errno);