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(parent: 0cba414) | patch
vhost: fix to check the return value of copy_to/from_user() correctly
authorTakuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Thu, 27 May 2010 09:58:03 +0000 (18:58 +0900)
committerMichael S. Tsirkin <mst@redhat.com>
Thu, 27 May 2010 10:54:59 +0000 (13:54 +0300)
commit91b00dc81d9798f31732afdc9ca9df4abc914667
tree0f70562d0f51c086b02953388578bd87040b5067tree | snapshot
parent0cba41473249a250d8e445207844fdb3d1230e53commit | diff
vhost: fix to check the return value of copy_to/from_user() correctly

copy_to/from_user() returns the number of bytes that could not be copied.

So we need to check if it is not zero, and in that case, we should return
the error number -EFAULT rather than directly return the return value from
copy_to/from_user().

Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
drivers/vhost/vhost.c diff | blob | history
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