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authorPavel Emelyanov <xemul@openvz.org>2008-04-25 01:49:48 -0700
committerDavid S. Miller <davem@davemloft.net>2008-04-25 01:49:48 -0700
commit653252c2302cdf2dfbca66a7e177f7db783f9efa (patch)
tree8d77bebbe29378c818313e4557242548b923d787 /net/dccp/probe.c
parentcc93d7d77d28d65d4f947dabc95a01c42d713ea3 (diff)
net: Fix wrong interpretation of some copy_to_user() results.
I found some places, that erroneously return the value obtained from the copy_to_user() call: if some amount of bytes were not able to get to the user (this is what this one returns) the proper behavior is to return the -EFAULT error, not that number itself. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dccp/probe.c')
-rw-r--r--net/dccp/probe.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/dccp/probe.c b/net/dccp/probe.c
index 6e1df62bd7c..0bcdc925027 100644
--- a/net/dccp/probe.c
+++ b/net/dccp/probe.c
@@ -140,7 +140,7 @@ static ssize_t dccpprobe_read(struct file *file, char __user *buf,
goto out_free;
cnt = kfifo_get(dccpw.fifo, tbuf, len);
- error = copy_to_user(buf, tbuf, cnt);
+ error = copy_to_user(buf, tbuf, cnt) ? -EFAULT : 0;
out_free:
vfree(tbuf);