tree a8d77c01cc146a6627c4ca50e2c44d7f6e93da45
parent 54d49ac99227aff646ac940abfab3417f5cb1693
author Luiz Capitulino <lcapitulino@redhat.com> 1364233946 -0400
committer Luiz Capitulino <lcapitulino@redhat.com> 1365165749 -0400

Monitor: Make output buffer dynamic

Commit f628926bb423fa8a7e0b114511400ea9df38b76a changed monitor_flush()
to retry on qemu_chr_fe_write() errors. However, the Monitor's output
buffer can keep growing while the retry is not issued and this can
cause the buffer to overflow.

To reproduce this issue, just start qemu and type on the Monitor:

(qemu) ?

This will cause an assertion to trig.

To fix this problem this commit makes the Monitor buffer dynamic,
which means that it can grow as much as needed.

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>