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2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 8/27/19 12:34 PM, Max Reitz wrote: > This does not really change anything, but it makes the code a bit easier > to follow once we use @socket as the opaque pointer for > aio_set_fd_handler(). > > (Also, this change stops us from creating new CURLSocket objects when > the cURL library just wants to stop listening on an existing socket that > we do not recognize. With a well-behaving cURL, that should never > happen anyway.) > > Cc: qemu-stable@nongnu.org > Signed-off-by: Max Reitz > --- > block/curl.c | 7 ++++--- > 1 file changed, 4 insertions(+), 3 deletions(-) > > diff --git a/block/curl.c b/block/curl.c > index 92dc2f630e..8a45b371cc 100644 > --- a/block/curl.c > +++ b/block/curl.c > @@ -174,18 +174,16 @@ static int curl_sock_cb(CURL *curl, curl_socket_t fd, int action, > if (socket->fd == fd) { > if (action == CURL_POLL_REMOVE) { > QLIST_REMOVE(socket, next); > - g_free(socket); > } > break; > } > } > - if (!socket) { > + if (action != CURL_POLL_REMOVE && !socket) { > socket = g_new0(CURLSocket, 1); > socket->fd = fd; > socket->state = state; > QLIST_INSERT_HEAD(&state->sockets, socket, next); > } > - socket = NULL; > > trace_curl_sock_cb(action, (int)fd); > switch (action) { > @@ -207,6 +205,9 @@ static int curl_sock_cb(CURL *curl, curl_socket_t fd, int action, > break; > } > > + if (action == CURL_POLL_REMOVE) { > + g_free(socket); > + } > return 0; > } > > Very naive question: why is CURL_POLL_REMOVE handled so early in the function? Why not handle both QLIST_REMOVE and g_free under the switch(action) construct entirely?