[PATCH] xfsdump: handle Ctrl-D during prompts

[Bill Kendall]

Christoph Hellwig wrote:
> On Wed, Nov 09, 2011 at 04:15:46PM -0600, Bill Kendall wrote:
>> xfsdump does not currently handle Ctrl-D well during a dialog
>> prompt. If some text is entered followed by Ctrl-D, an assert
>> will trip because xfsdump expects a new-line character at the
>> end of the user's input (or if asserts are disabled, the last
>> character the user entered will be dropped).
>>
>> If Ctrl-D is entered without entering any response, some dialog
>> callers (e.g., tree_subtree_inter()) will abort because they
>> receive an unexpected response code.
>>
>> This patch changes xfsdump to treat Ctrl-D as if the user hit
>> enter. User input (if any) will be passed back to the caller,
>> and a new line will be echoed to the terminal.
> 
> Shouldn't Ctrl+D cause us to ignore the input that was added
> before?  That's what I would expect from command line applications.

Ctrl-C will behave the way you describe.

I tried a some interactive programs (parted, python, sftp, bash,
xfs_db), and Ctrl-D seems to be ignored if there's already some input.
I'll rework the patch to behave this way unless I hear back from
you.

Thanks,
Bill