Re: [PATCH ssh v2] ssh: Do not switch session to non-blocking mode

[Kevin Wolf]

Am 13.11.2024 um 13:55 hat Richard W.M. Jones geschrieben:
> From: Jakub Jelen <jjelen@redhat.com>
> 
> The libssh does not handle non-blocking mode in SFTP correctly. The
> driver code already changes the mode to blocking for the SFTP
> initialization, but for some reason changes to non-blocking mode.
> This used to work accidentally until libssh in 0.11 branch merged
> the patch to avoid infinite looping in case of network errors:
> 
> https://gitlab.com/libssh/libssh-mirror/-/merge_requests/498
> 
> Since then, the ssh driver in qemu fails to read files over SFTP
> as the first SFTP messages exchanged after switching the session
> to non-blocking mode return SSH_AGAIN, but that message is lost
> int the SFTP internals and interpretted as SSH_ERROR, which is
> returned to the caller:
> 
> https://gitlab.com/libssh/libssh-mirror/-/issues/280
> 
> This is indeed an issue in libssh that we should address in the
> long term, but it will require more work on the internals. For
> now, the SFTP is not supported in non-blocking mode.
> 
> Fixes: https://gitlab.com/libssh/libssh-mirror/-/issues/280
> Signed-off-by: Jakub Jelen <jjelen@redhat.com>
> Signed-off-by: Richard W.M. Jones <rjones@redhat.com>

Thanks, applied to the block branch.

Kevin