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Add G_IO_HUP handler for socket chardev 

This is used to detect that the remote end has disconnected. Just call
tcp_char_disconnect on receiving this event.

Signed-off-by: Antonios Motakis <a.motakis@virtualopensystems.com>
Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Nikolay Nikolaev 2014-05-27 15:04:28 +03:00 committed by Michael S. Tsirkin
parent c76bf6bb8f
commit cdaa86a54b
2 changed files with 22 additions and 0 deletions
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1
include/sysemu/char.h
View File

@ -83,6 +83,7 @@ struct CharDriverState {
int avail_connections;
int is_mux;
guint fd_in_tag;
guint fd_hup_tag;
QemuOpts *opts;
QTAILQ_ENTRY(CharDriverState) next;
};

21
qemu-char.c
View File

@ -2680,6 +2680,25 @@ CharDriverState *qemu_chr_open_eventfd(int eventfd)
}
#endif
static gboolean tcp_chr_chan_close(GIOChannel *channel, GIOCondition cond,
void *opaque)
{
CharDriverState *chr = opaque;
if (cond != G_IO_HUP) {
return FALSE;
}
/* connection closed */
tcp_chr_disconnect(chr);
if (chr->fd_hup_tag) {
g_source_remove(chr->fd_hup_tag);
chr->fd_hup_tag = 0;
}
return TRUE;
}
static void tcp_chr_connect(void *opaque)
{
CharDriverState *chr = opaque;
@ -2689,6 +2708,8 @@ static void tcp_chr_connect(void *opaque)
if (s->chan) {
chr->fd_in_tag = io_add_watch_poll(s->chan, tcp_chr_read_poll,
tcp_chr_read, chr);
chr->fd_hup_tag = g_io_add_watch(s->chan, G_IO_HUP, tcp_chr_chan_close,
chr);
}
qemu_chr_be_generic_open(chr);
}