On Wed, Jul 04, 2018 at 11:36:42AM +0800, xinhua.Cao wrote:
> In the tcp_chr_write function, we checked errno,
> but errno was not reset before a read or write operation.
> Therefore, this check of errno's actions is often
> incorrect after EAGAIN has occurred.
> we need check errno together with ret < 0.
>
> Signed-off-by: xinhua.Cao <caoxin...@huawei.com>
> ---
> chardev/char-socket.c | 7 +++++--
> 1 file changed, 5 insertions(+), 2 deletions(-)
>
> diff --git a/chardev/char-socket.c b/chardev/char-socket.c
> index 17519ec..efbad6e 100644
> --- a/chardev/char-socket.c
> +++ b/chardev/char-socket.c
> @@ -134,8 +134,11 @@ static int tcp_chr_write(Chardev *chr, const uint8_t
> *buf, int len)
> s->write_msgfds,
> s->write_msgfds_num);
>
> - /* free the written msgfds in any cases other than errno==EAGAIN */
> - if (EAGAIN != errno && s->write_msgfds_num) {
> + /* free the written msgfds in any cases
> + * other than ret < 0 && errno == EAGAIN
> + */
> + if (!(ret < 0 && EAGAIN == errno)
> + && s->write_msgfds_num) {
> g_free(s->write_msgfds);
> s->write_msgfds = 0;
> s->write_msgfds_num = 0;
Reviewed-by: Daniel P. Berrangé <berra...@redhat.com>
Regards,
Daniel
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