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qemu-char: Automatically do fe_open / fe_close on qemu_chr_add_handlers

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Most frontends can't really determine if the guest actually has the frontend
side open. So lets automatically generate fe_open / fe_close as soon as a
frontend becomes ready (as signalled by calling qemu_chr_add_handlers) /
becomes non ready (as signalled by setting all handlers to NULL).

And allow frontends which can actually determine if the guest is listening to
opt-out of this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Message-id: 1364292483-16564-5-git-send-email-hdegoede@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Hans de Goede 2013-03-26 11:07:56 +01:00 • committed by Anthony Liguori
parent c0c4bd2cfa
commit 190832289f
4 changed files with 15 additions and 2 deletions
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1
include/char/char.h
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@ -76,6 +76,7 @@ struct CharDriverState {
char *filename;
int be_open;
int fe_open;
int explicit_fe_open;
int avail_connections;
QemuOpts *opts;
QTAILQ_ENTRY(CharDriverState) next;