1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2002, 2003 Cluster File Systems, Inc.
5 * Author: Andreas Dilger <adilger@clusterfs.com>
7 * This file is part of Lustre, http://www.lustre.org.
9 * Lustre is free software; you can redistribute it and/or
10 * modify it under the terms of version 2 of the GNU General Public
11 * License as published by the Free Software Foundation.
13 * Lustre is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with Lustre; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 * (Un)packing of OST/MDS requests
26 #define DEBUG_SUBSYSTEM S_CLASS
29 #include <linux/lustre_net.h>
30 #include <linux/obd_support.h>
31 #include <linux/obd_class.h>
33 void obd_statfs_pack(struct obd_statfs *tgt, struct obd_statfs *src)
35 tgt->os_type = HTON__u64(src->os_type);
36 tgt->os_blocks = HTON__u64(src->os_blocks);
37 tgt->os_bfree = HTON__u64(src->os_bfree);
38 tgt->os_bavail = HTON__u64(src->os_bavail);
39 tgt->os_files = HTON__u64(src->os_files);
40 tgt->os_ffree = HTON__u64(src->os_ffree);
41 tgt->os_bsize = HTON__u32(src->os_bsize);
42 tgt->os_namelen = HTON__u32(src->os_namelen);
45 void obd_statfs_unpack(struct obd_statfs *tgt, struct obd_statfs *src)
47 obd_statfs_pack(tgt, src);
50 void statfs_pack(struct obd_statfs *osfs, struct statfs *sfs)
52 osfs->os_type = sfs->f_type;
53 osfs->os_blocks = sfs->f_blocks;
54 osfs->os_bfree = sfs->f_bfree;
55 osfs->os_bavail = sfs->f_bavail;
56 osfs->os_files = sfs->f_files;
57 osfs->os_ffree = sfs->f_ffree;
58 osfs->os_bsize = sfs->f_bsize;
59 osfs->os_namelen = sfs->f_namelen;
62 void statfs_unpack(struct statfs *sfs, struct obd_statfs *osfs)
64 sfs->f_type = osfs->os_type;
65 sfs->f_blocks = osfs->os_blocks;
66 sfs->f_bfree = osfs->os_bfree;
67 sfs->f_bavail = osfs->os_bavail;
68 sfs->f_files = osfs->os_files;
69 sfs->f_ffree = osfs->os_ffree;
70 sfs->f_bsize = osfs->os_bsize;
71 sfs->f_namelen = osfs->os_namelen;
74 int obd_self_statfs(struct obd_device *obd, struct statfs *sfs)
76 struct lustre_handle conn;
77 struct obd_export *export, *my_export = NULL;
78 struct obd_statfs osfs = { 0 };
82 if (list_empty(&obd->obd_exports)) {
83 export = my_export = class_new_export(obd);
87 export = list_entry(obd->obd_exports.next, typeof(*export),
89 conn.addr = (unsigned long)export;
90 conn.cookie = export->exp_cookie;
92 rc = obd_statfs(&conn, &osfs);
94 statfs_unpack(sfs, &osfs);
97 class_destroy_export(my_export);
101 EXPORT_SYMBOL(obd_statfs_pack);
102 EXPORT_SYMBOL(obd_statfs_unpack);
103 EXPORT_SYMBOL(statfs_pack);
104 EXPORT_SYMBOL(statfs_unpack);
105 EXPORT_SYMBOL(obd_self_statfs);