Re: [PATCH v2] fstests: common: Enhance _exclude_scratch_mount_option to handle multiple options

[Eryu Guan <eguan@redhat.com>]

On Thu, Sep 08, 2016 at 10:52:21AM +0800, Qu Wenruo wrote:
> Enhance _exclude_scratch_mount_option() function to normalize mount
> options.
> Now it can understand and extract real mount option from string like
> "-o opt1,opt2 -oopt3".
> 
> And now we do word grep to handle mount options like noinode_cache and
> inode_cache.
> 
> Finally, allow it to accept multiple options at the same time.
> No need for multiple _exclude_scratch_mount_option lines now
> 
> Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
> ---
> changelog:
> v2:
>    Don't introduce new 'fstype' parameter, suggested by Dave and Eryu.
>    Use easier grep -w method, suggested by Dave and Eryu.
> ---
>  common/rc      | 22 ++++++++++++++++++----
>  tests/ext4/271 |  6 ++----
>  tests/xfs/134  |  3 +--
>  3 files changed, 21 insertions(+), 10 deletions(-)
> 
> diff --git a/common/rc b/common/rc
> index 04039a4..23c007a 100644
> --- a/common/rc
> +++ b/common/rc
> @@ -3183,12 +3183,26 @@ _require_cloner()
>  		_notrun "cloner binary not present at $CLONER_PROG"
>  }
>  
> -# skip test if MKFS_OPTIONS contains the given string
> +# Normalize mount options from global $MOUNT_OPTIONS
> +# Convert options like "-o opt1,opt2 -oopt3" to
> +# "opt1 opt2 opt3"
> +_normalize_mount_options()
> +{
> +	echo $MOUNT_OPTIONS | sed -n 's/-o\s*\(\S*\)/\1/gp' |\
> +		sed 's/,/ /g'
> +}
> +
> +# skip test if MOUNT_OPTIONS contains the given string

Make "string" plural? Because it accepts multiple arguments now :)

>  _exclude_scratch_mount_option()
>  {
> -	if echo $MOUNT_OPTIONS | grep -q "$1"; then
> -		_notrun "mount option \"$1\" not allowed in this test"
> -	fi
> +	mnt_opts=$(_normalize_mount_options)
> +
> +	while [ $# -gt 1 ]; do

"-gt" should be "-ge" or "-gt 0", otherwise the last mount option in
arguments is not checked (no check is done if there's only one option).

I can fix them at commit time if there's no other review comments.

Thanks,
Eryu