diff mbox series

[PATCHv3,1/2] common: btrfs: Improve _require_btrfs_command

Message ID 20200224031341.27740-2-marcos@mpdesouza.com (mailing list archive)
State New, archived
Headers show
Series btrfs: Test subvolume delete by id feature | expand

Commit Message

Marcos Paulo de Souza Feb. 24, 2020, 3:13 a.m. UTC
From: Marcos Paulo de Souza <mpdesouza@suse.com>

Now _require_btrfs_command can also check for subfuntion options, like
"subvolume delete --subvolid".

Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com>
---
Changes from v2:
* Added Reviewed-by from Nikolay to patch 0001

Changes from v1:
* New patch expanding the funtionality of _require_btrfs_command, which now
  check for argument of subcommands

 common/btrfs | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

Comments

Johannes Thumshirn Feb. 24, 2020, 7:54 p.m. UTC | #1
On 23/02/2020 19:33, Marcos Paulo de Souza wrote:
> Now _require_btrfs_command can also check for subfuntion options, like

Nit: subfunction

else
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Eryu Guan March 1, 2020, 1:36 p.m. UTC | #2
On Mon, Feb 24, 2020 at 12:13:40AM -0300, Marcos Paulo de Souza wrote:
> From: Marcos Paulo de Souza <mpdesouza@suse.com>
> 
> Now _require_btrfs_command can also check for subfuntion options, like
> "subvolume delete --subvolid".
> 
> Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com>

Ah, this patch has already been applied in previous updates. Please see

2f9b4039253d common/btrfs: Improve _require_btrfs_command

Thanks,
Eryu

> ---
> Changes from v2:
> * Added Reviewed-by from Nikolay to patch 0001
> 
> Changes from v1:
> * New patch expanding the funtionality of _require_btrfs_command, which now
>   check for argument of subcommands
> 
>  common/btrfs | 13 +++++++++++--
>  1 file changed, 11 insertions(+), 2 deletions(-)
> 
> diff --git a/common/btrfs b/common/btrfs
> index 19ac7cc4..ae3142b6 100644
> --- a/common/btrfs
> +++ b/common/btrfs
> @@ -12,12 +12,14 @@ _btrfs_get_subvolid()
>  
>  # _require_btrfs_command <command> [<subcommand>|<option>]
>  # We check for btrfs and (optionally) features of the btrfs command
> -# It can both subfunction like "inspect-internal dump-tree" and
> -# options like "check --qgroup-report"
> +# This function support both subfunction like "inspect-internal dump-tree" and
> +# options like "check --qgroup-report", and also subfunction options like
> +# "subvolume delete --subvolid"
>  _require_btrfs_command()
>  {
>  	local cmd=$1
>  	local param=$2
> +	local param_arg=$3
>  	local safe_param
>  
>  	_require_command "$BTRFS_UTIL_PROG" btrfs
> @@ -39,6 +41,13 @@ _require_btrfs_command()
>  
>  	$BTRFS_UTIL_PROG $cmd $param --help &> /dev/null
>  	[ $? -eq 0 ] || _notrun "$BTRFS_UTIL_PROG too old (must support $cmd $param)"
> +
> +	test -z "$param_arg" && return
> +
> +	# replace leading "-"s for grep
> +	safe_param=$(echo $param_arg | sed 's/^-*//')
> +	$BTRFS_UTIL_PROG $cmd $param --help | grep -wq $safe_param || \
> +		_notrun "$BTRFS_UTIL_PROG too old (must support $cmd $param $param_arg)"
>  }
>  
>  # Require extra check on btrfs qgroup numbers
> -- 
> 2.25.0
>
diff mbox series

Patch

diff --git a/common/btrfs b/common/btrfs
index 19ac7cc4..ae3142b6 100644
--- a/common/btrfs
+++ b/common/btrfs
@@ -12,12 +12,14 @@  _btrfs_get_subvolid()
 
 # _require_btrfs_command <command> [<subcommand>|<option>]
 # We check for btrfs and (optionally) features of the btrfs command
-# It can both subfunction like "inspect-internal dump-tree" and
-# options like "check --qgroup-report"
+# This function support both subfunction like "inspect-internal dump-tree" and
+# options like "check --qgroup-report", and also subfunction options like
+# "subvolume delete --subvolid"
 _require_btrfs_command()
 {
 	local cmd=$1
 	local param=$2
+	local param_arg=$3
 	local safe_param
 
 	_require_command "$BTRFS_UTIL_PROG" btrfs
@@ -39,6 +41,13 @@  _require_btrfs_command()
 
 	$BTRFS_UTIL_PROG $cmd $param --help &> /dev/null
 	[ $? -eq 0 ] || _notrun "$BTRFS_UTIL_PROG too old (must support $cmd $param)"
+
+	test -z "$param_arg" && return
+
+	# replace leading "-"s for grep
+	safe_param=$(echo $param_arg | sed 's/^-*//')
+	$BTRFS_UTIL_PROG $cmd $param --help | grep -wq $safe_param || \
+		_notrun "$BTRFS_UTIL_PROG too old (must support $cmd $param $param_arg)"
 }
 
 # Require extra check on btrfs qgroup numbers