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qemu-char: Call fe_claim / fe_release when not using qdev chr properties

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chardev-frontends need to explictly check, increase and decrement the
avail_connections "property" of the chardev when they are not using a
qdev-chardev-property for the chardev.

This fixes things like:
qemu-kvm -chardev stdio,id=foo -device isa-serial,chardev=foo \
  -mon chardev=foo

Working, where they should fail. Most of the changes here are due to
old hardware emulation code which is using serial_hds directly rather then
a qdev-chardev-property.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Message-id: 1364412581-3672-3-git-send-email-hdegoede@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Hans de Goede 2013-03-27 20:29:40 +01:00 • committed by Anthony Liguori
parent 44c473decd
commit 456d606923
12 changed files with 42 additions and 7 deletions
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1
net/slirp.c
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@ -660,6 +660,7 @@ static int slirp_guestfwd(SlirpState *s, const char *config_str,
fwd->port = port;
fwd->slirp = s->slirp;
qemu_chr_fe_claim_no_fail(fwd->hd);
qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,
NULL, fwd);
}