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authorMichael S. Tsirkin <mst@redhat.com>2013-04-28 17:12:08 +0300
committerMichael S. Tsirkin <mst@redhat.com>2013-05-01 10:02:54 +0300
commit150b9e51ae975ca1fe468c565870fbc4a96e0574 (patch)
treec708d0c69807c7ac4eb14e86498536c5ec1c6c82 /drivers/vhost/vhost.h
parent061b16cfe3dc7a106dd29b76f6355d84464d126c (diff)
downloadlinux-150b9e51ae975ca1fe468c565870fbc4a96e0574.tar.bz2
vhost: fix error handling in RESET_OWNER ioctl
RESET_OWNER ioctl would leave the fd in a bad state if memory allocation failed: device is stopped but owner is not reset. Make state changes after allocating memory, such that a failed ioctl has no effect. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vhost/vhost.h')
-rw-r--r--drivers/vhost/vhost.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h
index 1627eec0ca25..b58f4ae82cb8 100644
--- a/drivers/vhost/vhost.h
+++ b/drivers/vhost/vhost.h
@@ -136,7 +136,8 @@ struct vhost_dev {
long vhost_dev_init(struct vhost_dev *, struct vhost_virtqueue **vqs, int nvqs);
long vhost_dev_check_owner(struct vhost_dev *);
-long vhost_dev_reset_owner(struct vhost_dev *);
+struct vhost_memory *vhost_dev_reset_owner_prepare(void);
+void vhost_dev_reset_owner(struct vhost_dev *, struct vhost_memory *);
void vhost_dev_cleanup(struct vhost_dev *, bool locked);
void vhost_dev_stop(struct vhost_dev *);
long vhost_dev_ioctl(struct vhost_dev *, unsigned int ioctl, void __user *argp);