Re: [PATCH 1/5] xfs_quota: separate quota info acquisition into get_quota()

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On Tue, Mar 29, 2022 at 12:24:59AM +0200, Andrey Albershteyn wrote:
> Both report_mount() and dump_file() have identical code to get quota
> information. This could be used for further separation of the
> functions.
> 
> Signed-off-by: Andrey Albershteyn <aalbersh@xxxxxxxxxx>
> ---
>  quota/report.c | 49 +++++++++++++++++++++++--------------------------
>  1 file changed, 23 insertions(+), 26 deletions(-)
> 
> diff --git a/quota/report.c b/quota/report.c
> index 2eb5b5a9..97a89a92 100644
> --- a/quota/report.c
> +++ b/quota/report.c
> @@ -59,16 +59,15 @@ report_help(void)
>  "\n"));
>  }
>  
> -static int 
> -dump_file(
> -	FILE		*fp,
> +static int
> +get_quota(
> +	fs_disk_quota_t *d,

At first I confused this for a quotatools patch, but then I realized
that xfsprogs /and/ quotatools both define this structure.

Anyway... please use the non-typedef version of this, in keeping with
the current style:

static int
get_dquot(
	struct fs_disk_quota	*d,
	uint			id,
	...

Also I think this ought to be called get_dquot in keeping with (AFAICT)
the naming conventions: "dquot" for specific quota records vs. "quota"
to refer to the overall feature.

>  	uint		id,
>  	uint		*oid,
>  	uint		type,
>  	char		*dev,
>  	int		flags)
>  {
> -	fs_disk_quota_t	d;
>  	int		cmd;
>  
>  	if (flags & GETNEXTQUOTA_FLAG)
> @@ -77,7 +76,7 @@ dump_file(
>  		cmd = XFS_GETQUOTA;
>  
>  	/* Fall back silently if XFS_GETNEXTQUOTA fails, warn on XFS_GETQUOTA */
> -	if (xfsquotactl(cmd, dev, type, id, (void *)&d) < 0) {
> +	if (xfsquotactl(cmd, dev, type, id, (void *)d) < 0) {
>  		if (errno != ENOENT && errno != ENOSYS && errno != ESRCH &&
>  		    cmd == XFS_GETQUOTA)
>  			perror("XFS_GETQUOTA");
> @@ -85,12 +84,29 @@ dump_file(
>  	}
>  
>  	if (oid) {
> -		*oid = d.d_id;
> +		*oid = d->d_id;
>  		/* Did kernelspace wrap? */
>  		if (*oid < id)
>  			return 0;
>  	}
>  
> +	return 1;
> +}
> +
> +static int
> +dump_file(
> +	FILE		*fp,
> +	uint		id,
> +	uint		*oid,
> +	uint		type,
> +	char		*dev,
> +	int		flags)
> +{
> +	fs_disk_quota_t	d;
> +
> +	if	(!get_quota(&d, id, oid, type, dev, flags))

Please don't insert a whole tab after 'if'.

--D

> +		return 0;
> +
>  	if (!d.d_blk_softlimit && !d.d_blk_hardlimit &&
>  	    !d.d_ino_softlimit && !d.d_ino_hardlimit &&
>  	    !d.d_rtb_softlimit && !d.d_rtb_hardlimit)
> @@ -329,31 +345,12 @@ report_mount(
>  {
>  	fs_disk_quota_t	d;
>  	time64_t	timer;
> -	char		*dev = mount->fs_name;
>  	char		c[8], h[8], s[8];
>  	uint		qflags;
>  	int		count;
> -	int		cmd;
>  
> -	if (flags & GETNEXTQUOTA_FLAG)
> -		cmd = XFS_GETNEXTQUOTA;
> -	else
> -		cmd = XFS_GETQUOTA;
> -
> -	/* Fall back silently if XFS_GETNEXTQUOTA fails, warn on XFS_GETQUOTA*/
> -	if (xfsquotactl(cmd, dev, type, id, (void *)&d) < 0) {
> -		if (errno != ENOENT && errno != ENOSYS && errno != ESRCH &&
> -		    cmd == XFS_GETQUOTA)
> -			perror("XFS_GETQUOTA");
> +	if	(!get_quota(&d, id, oid, type, mount->fs_name, flags))
>  		return 0;
> -	}
> -
> -	if (oid) {
> -		*oid = d.d_id;
> -		/* Did kernelspace wrap? */
> -		if (* oid < id)
> -			return 0;
> -	}
>  
>  	if (flags & TERSE_FLAG) {
>  		count = 0;
> -- 
> 2.27.0
> 



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