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Commit 113d6b3c authored by Steven Whitehouse's avatar Steven Whitehouse
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GFS2: Add get_xquota support 



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: default avatarSteven Whitehouse <swhiteho@redhat.com>
Reviewed-by: default avatarBob Peterson <rpeterso@redhat.com>
parent 1e72c0f7

fs/gfs2/quota.c

+43 −0
Original line number Diff line number Diff line
@@ -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,

};