On 2015/3/10 13:54, Michael Tokarev wrote:
> Don't compare syscall return with -1, use "<0" condition.
> Don't introduce useless local variables when we already
> have similar variable
> Rename local variable to be consistent with other usages
>
> Signed-off-by: Michael Tokarev <m...@tls.msk.ru>
> ---
> hw/9pfs/virtio-9p-proxy.c | 12 +++++-------
> 1 file changed, 5 insertions(+), 7 deletions(-)
>
> diff --git a/hw/9pfs/virtio-9p-proxy.c b/hw/9pfs/virtio-9p-proxy.c
> index 59c7445..a01804a 100644
> --- a/hw/9pfs/virtio-9p-proxy.c
> +++ b/hw/9pfs/virtio-9p-proxy.c
> @@ -696,9 +696,9 @@ static ssize_t proxy_preadv(FsContext *ctx,
> V9fsFidOpenState *fs,
> #ifdef CONFIG_PREADV
> return preadv(fs->fd, iov, iovcnt, offset);
> #else
> - int err = lseek(fs->fd, offset, SEEK_SET);
> - if (err == -1) {
> - return err;
> + int ret = lseek(fs->fd, offset, SEEK_SET);
> + if (err < 0)
> + return ret;
The above code fragment is confused.
Regards,
-Gonglei
> } else {
> return readv(fs->fd, iov, iovcnt);
> }
> @@ -714,10 +714,8 @@ static ssize_t proxy_pwritev(FsContext *ctx,
> V9fsFidOpenState *fs,
> #ifdef CONFIG_PREADV
> ret = pwritev(fs->fd, iov, iovcnt, offset);
> #else
> - int err = lseek(fs->fd, offset, SEEK_SET);
> - if (err == -1) {
> - return err;
> - } else {
> + ret = lseek(fs->fd, offset, SEEK_SET);
> + if (ret >= 0) {
> ret = writev(fs->fd, iov, iovcnt);
> }
> #endif
>
