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qga: drop unnecessary GA_CHANNEL_UNIX_LISTEN checks 

Throughout the code there are c->listen_channel checks which manage the
listen socket file descriptor (waiting for accept(2), closing the file
descriptor, etc).  These checks are currently preceded by explicit
c->method == GA_CHANNEL_UNIX_LISTEN checks.

Explicit GA_CHANNEL_UNIX_LISTEN checks are not necessary since serial
channel types do not create the listen channel (c->listen_channel).

As more listen channel types are added, explicitly checking all of them
becomes messy.  Rely on c->listen_channel to determine whether or not a
listen socket file descriptor is used.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
This commit is contained in:
Stefan Hajnoczi 2016-10-14 10:00:54 +01:00 committed by Michael Roth
parent b8093d38e8
commit f06b2031a3
1 changed files with 2 additions and 4 deletions
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6
qga/channel-posix.c
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@ -61,7 +61,6 @@ static void ga_channel_listen_add(GAChannel *c, int listen_fd, bool create)
static void ga_channel_listen_close(GAChannel *c)
{
g_assert(c->method == GA_CHANNEL_UNIX_LISTEN);
g_assert(c->listen_channel);
g_io_channel_shutdown(c->listen_channel, true, NULL);
g_io_channel_unref(c->listen_channel);
@ -77,7 +76,7 @@ static void ga_channel_client_close(GAChannel *c)
g_io_channel_shutdown(c->client_channel, true, NULL);
g_io_channel_unref(c->client_channel);
c->client_channel = NULL;
if (c->method == GA_CHANNEL_UNIX_LISTEN && c->listen_channel) {
if (c->listen_channel) {
ga_channel_listen_add(c, 0, false);
}
}
@ -255,8 +254,7 @@ GAChannel *ga_channel_new(GAChannelMethod method, const gchar *path,
void ga_channel_free(GAChannel *c)
{
if (c->method == GA_CHANNEL_UNIX_LISTEN
&& c->listen_channel) {
if (c->listen_channel) {
ga_channel_listen_close(c);
}
if (c->client_channel) {