forked from Minki/linux
66 lines
1.9 KiB
C
66 lines
1.9 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* quota.c - CephFS quota
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*
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* Copyright (C) 2017-2018 SUSE
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "super.h"
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#include "mds_client.h"
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void ceph_handle_quota(struct ceph_mds_client *mdsc,
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struct ceph_mds_session *session,
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struct ceph_msg *msg)
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{
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struct super_block *sb = mdsc->fsc->sb;
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struct ceph_mds_quota *h = msg->front.iov_base;
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struct ceph_vino vino;
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struct inode *inode;
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struct ceph_inode_info *ci;
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if (msg->front.iov_len != sizeof(*h)) {
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pr_err("%s corrupt message mds%d len %d\n", __func__,
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session->s_mds, (int)msg->front.iov_len);
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ceph_msg_dump(msg);
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return;
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}
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/* increment msg sequence number */
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mutex_lock(&session->s_mutex);
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session->s_seq++;
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mutex_unlock(&session->s_mutex);
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/* lookup inode */
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vino.ino = le64_to_cpu(h->ino);
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vino.snap = CEPH_NOSNAP;
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inode = ceph_find_inode(sb, vino);
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if (!inode) {
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pr_warn("Failed to find inode %llu\n", vino.ino);
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return;
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}
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ci = ceph_inode(inode);
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spin_lock(&ci->i_ceph_lock);
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ci->i_rbytes = le64_to_cpu(h->rbytes);
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ci->i_rfiles = le64_to_cpu(h->rfiles);
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ci->i_rsubdirs = le64_to_cpu(h->rsubdirs);
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ci->i_max_bytes = le64_to_cpu(h->max_bytes);
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ci->i_max_files = le64_to_cpu(h->max_files);
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spin_unlock(&ci->i_ceph_lock);
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iput(inode);
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}
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