gfs2: Convert gfs2_quota_refresh to take a kqid

- In quota_refresh_user_store convert the user supplied uid
  into a kqid and pass it to gfs2_quota_refresh.

- In quota_refresh_group_store convert the user supplied gid
  into a kqid and pass it to gfs2_quota_refresh.

Cc: Steven Whitehouse <swhiteho@redhat.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>

fs/gfs2/quota.c

@@ -1177,13 +1177,14 @@ static int gfs2_quota_sync_timeo(struct super_block *sb, int type)
 	return gfs2_quota_sync(sb, type);
 }
 
-int gfs2_quota_refresh(struct gfs2_sbd *sdp, int user, u32 id)
+int gfs2_quota_refresh(struct gfs2_sbd *sdp, struct kqid qid)
 {
 	struct gfs2_quota_data *qd;
 	struct gfs2_holder q_gh;
 	int error;
 
-	error = qd_get(sdp, user, id, &qd);
+	error = qd_get(sdp, qid.type == USRQUOTA ? QUOTA_USER : QUOTA_GROUP,
+		       from_kqid(&init_user_ns, qid), &qd);
 	if (error)
 		return error;
 

fs/gfs2/quota.h

@@ -28,7 +28,7 @@ extern void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
 			      u32 uid, u32 gid);
 
 extern int gfs2_quota_sync(struct super_block *sb, int type);
-extern int gfs2_quota_refresh(struct gfs2_sbd *sdp, int user, u32 id);
+extern int gfs2_quota_refresh(struct gfs2_sbd *sdp, struct kqid qid);
 
 extern int gfs2_quota_init(struct gfs2_sbd *sdp);
 extern void gfs2_quota_cleanup(struct gfs2_sbd *sdp);

fs/gfs2/sys.c

@@ -175,6 +175,7 @@ static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf,
 static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf,
 					size_t len)
 {
+	struct kqid qid;
 	int error;
 	u32 id;
 
@@ -183,13 +184,18 @@ static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf,
 
 	id = simple_strtoul(buf, NULL, 0);
 
-	error = gfs2_quota_refresh(sdp, 1, id);
+	qid = make_kqid(current_user_ns(), USRQUOTA, id);
+	if (!qid_valid(qid))
+		return -EINVAL;
+
+	error = gfs2_quota_refresh(sdp, qid);
 	return error ? error : len;
 }
 
 static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf,
 					 size_t len)
 {
+	struct kqid qid;
 	int error;
 	u32 id;
 
@@ -198,7 +204,11 @@ static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf,
 
 	id = simple_strtoul(buf, NULL, 0);
 
-	error = gfs2_quota_refresh(sdp, 0, id);
+	qid = make_kqid(current_user_ns(), GRPQUOTA, id);
+	if (!qid_valid(qid))
+		return -EINVAL;
+
+	error = gfs2_quota_refresh(sdp, qid);
 	return error ? error : len;
 }