On Fri, Oct 25, 2013 at 07:33:12PM -0700, Daniel Walker wrote:
> Signed-off-by: Daniel Walker <dwal...@fifo99.com>
> ---
> fs/nfsd/fault_inject.c | 12 ++++++++----
> 1 file changed, 8 insertions(+), 4 deletions(-)
>
> diff --git a/fs/nfsd/fault_inject.c b/fs/nfsd/fault_inject.c
> index d620e7f..41165f0 100644
> --- a/fs/nfsd/fault_inject.c
> +++ b/fs/nfsd/fault_inject.c
> @@ -125,20 +125,24 @@ static ssize_t fault_inject_write(struct file *file,
> const char __user *buf,
> size_t size = min(sizeof(write_buf) - 1, len);
> struct net *net = current->nsproxy->net_ns;
> struct sockaddr_storage sa;
> + int ret = -EFAULT;
> u64 val;
>
> if (copy_from_user(write_buf, buf, size))
> - return -EFAULT;
> + return ret;
> write_buf[size] = '\0';
>
> size = rpc_pton(net, write_buf, size, (struct sockaddr *)&sa,
> sizeof(sa));
> if (size > 0)
> nfsd_inject_set_client(file_inode(file)->i_private, &sa, size);
If we take this branch, don't we end up returning -EFAULT below?
--b.
> else {
> - val = simple_strtoll(write_buf, NULL, 0);
> - nfsd_inject_set(file_inode(file)->i_private, val);
> + ret = kstrtoll(write_buf, 0, &val);
> + if (ret == 0) {
> + nfsd_inject_set(file_inode(file)->i_private, val);
> + ret = len;
> + }
> }
> - return len; /* on success, claim we got the whole input */
> + return ret; /* on success, claim we got the whole input */
> }
>
> static const struct file_operations fops_nfsd = {
> --
> 1.8.3.2
>
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