[1/9] Introduce target_fileio_fstat
Commit Message
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.
---
gdb/ChangeLog | 9 +++++++++
gdb/inf-child.c | 17 +++++++++++++++++
gdb/remote.c | 1 +
gdb/target.c | 21 +++++++++++++++++++++
gdb/target.h | 11 +++++++++++
5 files changed, 59 insertions(+), 0 deletions(-)
Comments
Looks good with the nits below addressed.
On 03/20/2015 04:47 PM, Gary Benson wrote:
> --- a/gdb/inf-child.c
> +++ b/gdb/inf-child.c
> @@ -374,6 +374,22 @@ inf_child_fileio_pread (struct target_ops *self,
> return ret;
> }
>
> +/* Get information about the file opened as FD and put it in SB.
> + Return 0, or -1 if an error occurs (and set *TARGET_ERRNO). */
Write something like "Implementation of to_fileio_fstat."
instead of duplicating the comment.
> +
> +static int
> +inf_child_fileio_fstat (struct target_ops *self, int fd,
> + struct stat *sb, int *target_errno)
> +{
> index bb901b5..44ede10 100644
> --- a/gdb/target.c
> +++ b/gdb/target.c
> @@ -2848,6 +2848,27 @@ target_fileio_pread (int fd, gdb_byte *read_buf, int len,
> return ret;
> }
>
> +/* Get information about the file opened as FD on the target
> + and put it in SB. Return 0, or -1 if an error occurs (and
> + set *TARGET_ERRNO). */
Write:
/* See target.h. */
instead of duplicating the comment.
> +int
> +target_fileio_fstat (int fd, struct stat *sb, int *target_errno)
> +{
> + fileio_fh_t *fh = fileio_fd_to_fh (fd);
> + int ret = -1;
> +
> + if (is_closed_fileio_fh (fh->fd))
> + *target_errno = EBADF;
> + else
> + ret = fh->t->to_fileio_fstat (fh->t, fh->fd, sb, target_errno);
> +
> + if (targetdebug)
> + fprintf_unfiltered (gdb_stdlog,
> + "target_fileio_fstat (%d) = %d (%d)\n",
> + fd, ret, ret != -1 ? 0 : *target_errno);
> + return ret;
> +}
> +
> /* Close FD on the target. Return 0, or -1 if an error occurs
> (and set *TARGET_ERRNO). */
> int
> diff --git a/gdb/target.h b/gdb/target.h
> index c95e1a4..d2bd152 100644
> --- a/gdb/target.h
> +++ b/gdb/target.h
> @@ -846,6 +846,11 @@ 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, or -1 if an error occurs (and set *TARGET_ERRNO). */
ITYM, "Return 0 on success, ..."
> + int (*to_fileio_fstat) (struct target_ops *,
> + int fd, struct stat *sb, int *target_errno);
> +
> +/* Get information about the file opened as FD on the target
> + and put it in SB. Return 0, or -1 if an error occurs (and
Likewise.
> + set *TARGET_ERRNO). */
> +extern int target_fileio_fstat (int fd, struct stat *sb,
> + int *target_errno);
Thanks,
Pedro Alves
@@ -374,6 +374,22 @@ inf_child_fileio_pread (struct target_ops *self,
return ret;
}
+/* Get information about the file opened as FD and put it in SB.
+ Return 0, or -1 if an error occurs (and set *TARGET_ERRNO). */
+
+static int
+inf_child_fileio_fstat (struct target_ops *self, int fd,
+ struct stat *sb, int *target_errno)
+{
+ int ret;
+
+ ret = fstat (fd, sb);
+ if (ret == -1)
+ *target_errno = inf_child_errno_to_fileio_error (errno);
+
+ return ret;
+}
+
/* Close FD on the target. Return 0, or -1 if an error occurs
(and set *TARGET_ERRNO). */
static int
@@ -500,6 +516,7 @@ inf_child_target (void)
t->to_fileio_open = inf_child_fileio_open;
t->to_fileio_pwrite = inf_child_fileio_pwrite;
t->to_fileio_pread = inf_child_fileio_pread;
+ t->to_fileio_fstat = inf_child_fileio_fstat;
t->to_fileio_close = inf_child_fileio_close;
t->to_fileio_unlink = inf_child_fileio_unlink;
t->to_fileio_readlink = inf_child_fileio_readlink;
@@ -11844,6 +11844,7 @@ Specify the serial device it is connected to\n\
remote_ops.to_fileio_open = remote_hostio_open;
remote_ops.to_fileio_pwrite = remote_hostio_pwrite;
remote_ops.to_fileio_pread = remote_hostio_pread;
+ remote_ops.to_fileio_fstat = remote_hostio_fstat;
remote_ops.to_fileio_close = remote_hostio_close;
remote_ops.to_fileio_unlink = remote_hostio_unlink;
remote_ops.to_fileio_readlink = remote_hostio_readlink;
@@ -2848,6 +2848,27 @@ target_fileio_pread (int fd, gdb_byte *read_buf, int len,
return ret;
}
+/* Get information about the file opened as FD on the target
+ and put it in SB. Return 0, or -1 if an error occurs (and
+ set *TARGET_ERRNO). */
+int
+target_fileio_fstat (int fd, struct stat *sb, int *target_errno)
+{
+ fileio_fh_t *fh = fileio_fd_to_fh (fd);
+ int ret = -1;
+
+ if (is_closed_fileio_fh (fh->fd))
+ *target_errno = EBADF;
+ else
+ ret = fh->t->to_fileio_fstat (fh->t, fh->fd, sb, target_errno);
+
+ if (targetdebug)
+ fprintf_unfiltered (gdb_stdlog,
+ "target_fileio_fstat (%d) = %d (%d)\n",
+ fd, ret, ret != -1 ? 0 : *target_errno);
+ return ret;
+}
+
/* Close FD on the target. Return 0, or -1 if an error occurs
(and set *TARGET_ERRNO). */
int
@@ -846,6 +846,11 @@ 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, 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 +1938,12 @@ 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, 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);