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GFS2: Add get_xquota support

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This adds support for viewing the current GFS2 quota settings
via the XFS quota API. The setting of quotas will be addressed
in a later patch. Fields which are not supported here are left
set to zero.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Reviewed-by: Bob Peterson <rpeterso@redhat.com>
This commit is contained in:
Steven Whitehouse 2009-09-28 11:52:16 +01:00
parent 1e72c0f7c4
commit 113d6b3c99
1 changed files with 43 additions and 0 deletions
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43
fs/gfs2/quota.c
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@ -1367,8 +1367,51 @@ static int gfs2_quota_get_xstate(struct super_block *sb,
return 0;
}
static int gfs2_xquota_get(struct super_block *sb, int type, qid_t id,
struct fs_disk_quota *fdq)
{
struct gfs2_sbd *sdp = sb->s_fs_info;
struct gfs2_quota_lvb *qlvb;
struct gfs2_quota_data *qd;
struct gfs2_holder q_gh;
int error;
memset(fdq, 0, sizeof(struct fs_disk_quota));
if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF)
return -ESRCH; /* Crazy XFS error code */
if (type == USRQUOTA)
type = QUOTA_USER;
else if (type == GRPQUOTA)
type = QUOTA_GROUP;
else
return -EINVAL;
error = qd_get(sdp, type, id, &qd);
if (error)
return error;
error = do_glock(qd, FORCE, &q_gh);
if (error)
goto out;
qlvb = (struct gfs2_quota_lvb *)qd->qd_gl->gl_lvb;
fdq->d_version = FS_DQUOT_VERSION;
fdq->d_flags = (type == QUOTA_USER) ? XFS_USER_QUOTA : XFS_GROUP_QUOTA;
fdq->d_id = id;
fdq->d_blk_hardlimit = be64_to_cpu(qlvb->qb_limit);
fdq->d_blk_softlimit = be64_to_cpu(qlvb->qb_warn);
fdq->d_bcount = be64_to_cpu(qlvb->qb_value);
gfs2_glock_dq_uninit(&q_gh);
out:
qd_put(qd);
return error;
}
const struct quotactl_ops gfs2_quotactl_ops = {
.quota_sync = gfs2_quota_sync,
.get_xstate = gfs2_quota_get_xstate,
.get_xquota = gfs2_xquota_get,
};