Re: [PATCH RESEND 1/2] btrfs-progs: check for no result before using results

[Anand Jain <anand.jain@oracle.com>]

Ping?

Thanks, Anand

On 1/31/19 6:05 PM, Anand Jain wrote:
> User space understands the ioctl BTRFS_IOC_DEV_REPLACE command status
> using the struct btrfs_ioctl_dev_replace_args::result, and so userspace
> initializes this to BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_RESULT, so exclude
> this value in checking for the error.
> 
> Signed-off-by: Anand Jain <anand.jain@oracle.com>
> ---
>   cmds-replace.c | 2 ++
>   1 file changed, 2 insertions(+)
> 
> diff --git a/cmds-replace.c b/cmds-replace.c
> index b30e6c781e64..42de4de8c031 100644
> --- a/cmds-replace.c
> +++ b/cmds-replace.c
> @@ -296,6 +296,8 @@ static int cmd_replace_start(int argc, char **argv)
>   		}
>   
>   		if (start_args.result !=
> +		    BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_RESULT &&
> +		    start_args.result !=
>   		    BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR) {
>   			error("ioctl(DEV_REPLACE_START) on '%s' returns error: %s",
>   				path,
>