[Bug 1695] bytes_transfered = rtems_rfs_rtems_error

[bugzilla-daemon at rtems.org]

https://www.rtems.org/bugzilla/show_bug.cgi?id=1695

--- Comment #15 from Ralf Corsepius <ralf.corsepius at rtems.org> 2010-09-03 02:30:23 CDT ---
(In reply to comment #14)

> > What I also do not understand in this context is rtems_rfs_dir_read():
> > AFAIU, it seem to return an error code. This seems inconsistent and
> > non-intuitive because read(2) returns ssize_t.
> 
> I am not sure how to answer this one because I feel I am missing something. I
> assume you know as well as anyone read(2) returns -1 on an error if no data has
> been read.

read(2) returns an ssize_t (signed size_t), returning a -1 on error and sets
errno.

RTEMS *fs*read* functions and drivers are inconsistent wrt. this
(There are some spots in RTEMS , GCC even complains about it).

readdir(2) returns a ternary status (1, 0, -1).

... and this function?

...
int rc;
size_t bytes_transfered;
...
return (ssize_t) bytes_transfered;

/me feels, this function mixes status codes with ssize_t's.

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