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char: Prevent multiple devices opening same chardev

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Prevent:

-chardev socket,path=/tmp/foo,server,nowait,id=c0 \
-device virtserialport,chardev=c0,id=vs0 \
-device virtserialport,chardev=c0,id=vs1

Reported-by: Mike Cao <bcao@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
This commit is contained in:
Amit Shah 2011-02-10 12:55:20 +05:30
parent f9a90f189c
commit 2d6c1ef40f
3 changed files with 11 additions and 1 deletions
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1
qemu-char.h
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@ -70,6 +70,7 @@ struct CharDriverState {
char *label;
char *filename;
int opened;
int assigned; /* chardev assigned to a device */
QTAILQ_ENTRY(CharDriverState) next;
};