Sudo(8) and fdesc don't get along

[Cyrus Durgin <cider_(_at_)_rset_(_dot_)_net>]

Hi,

	It seems that sudo(8) and the fdesc filesystem do not play nicely 
together.  I have fdesc mounted as:

    fdesc on /dev type fdesc (local, union)

I am no longer able to use sudo(8) (it hangs after prompting for user 
password).  I have tracked this problem to the following code, in 
tgetpass.c,v 1.95;

    /* Open /dev/tty for reading/writing if possible else use 
stdin/stderr. */
    if ((flags & TGP_STDIN) ||
        (input = output = open(_PATH_TTY, O_RDWR|O_NOCTTY)) == -1) {
        input = STDIN_FILENO;
        output = STDERR_FILENO;
    }

It would appear that opening /dev/tty when fdesc is mounted does not 
yield the expected results; modifying the sudo code to use "input = 
STDIN_FILENO" and "output = STDERR_FILENO" seems to solve the problem.  
I haven't studied up on the semantics of fdesc yet, so I don't know what 
the correct way to solve this is, but I'm sure someone familiar with the 
code can work it up.

--
cyrus.
<cider_(_at_)_rset_(_dot_)_net>