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

Darrick J. Wong
2022-03-28T23:44:38Z

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@redhat.com>
> ---
> 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
>