4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2012, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
33 #define DEBUG_SUBSYSTEM S_CLASS
35 #include <linux/seq_file.h>
36 #include <linux/statfs.h>
37 #include <lprocfs_status.h>
38 #include <obd_class.h>
39 #include "lmv_internal.h"
41 static ssize_t numobd_show(struct kobject *kobj, struct attribute *attr,
44 struct obd_device *dev = container_of(kobj, struct obd_device,
46 struct lmv_desc *desc;
48 desc = &dev->u.lmv.desc;
49 return sprintf(buf, "%u\n", desc->ld_tgt_count);
51 LUSTRE_RO_ATTR(numobd);
53 static ssize_t activeobd_show(struct kobject *kobj, struct attribute *attr,
56 struct obd_device *dev = container_of(kobj, struct obd_device,
58 struct lmv_desc *desc;
60 desc = &dev->u.lmv.desc;
61 return sprintf(buf, "%u\n", desc->ld_active_tgt_count);
63 LUSTRE_RO_ATTR(activeobd);
65 static int lmv_desc_uuid_seq_show(struct seq_file *m, void *v)
67 struct obd_device *dev = (struct obd_device *)m->private;
72 seq_printf(m, "%s\n", lmv->desc.ld_uuid.uuid);
76 LPROC_SEQ_FOPS_RO(lmv_desc_uuid);
78 static void *lmv_tgt_seq_start(struct seq_file *p, loff_t *pos)
80 struct obd_device *dev = p->private;
81 struct lmv_obd *lmv = &dev->u.lmv;
83 while (*pos < lmv->tgts_size) {
85 return lmv->tgts[*pos];
92 static void lmv_tgt_seq_stop(struct seq_file *p, void *v)
96 static void *lmv_tgt_seq_next(struct seq_file *p, void *v, loff_t *pos)
98 struct obd_device *dev = p->private;
99 struct lmv_obd *lmv = &dev->u.lmv;
102 while (*pos < lmv->tgts_size) {
104 return lmv->tgts[*pos];
111 static int lmv_tgt_seq_show(struct seq_file *p, void *v)
113 struct lmv_tgt_desc *tgt = v;
117 seq_printf(p, "%u: %s %sACTIVE\n",
118 tgt->ltd_idx, tgt->ltd_uuid.uuid,
119 tgt->ltd_active ? "" : "IN");
123 static const struct seq_operations lmv_tgt_sops = {
124 .start = lmv_tgt_seq_start,
125 .stop = lmv_tgt_seq_stop,
126 .next = lmv_tgt_seq_next,
127 .show = lmv_tgt_seq_show,
130 static int lmv_target_seq_open(struct inode *inode, struct file *file)
132 struct seq_file *seq;
135 rc = seq_open(file, &lmv_tgt_sops);
139 seq = file->private_data;
140 seq->private = inode->i_private;
145 static struct lprocfs_vars lprocfs_lmv_obd_vars[] = {
146 { "desc_uuid", &lmv_desc_uuid_fops, NULL, 0 },
150 const struct file_operations lmv_proc_target_fops = {
151 .owner = THIS_MODULE,
152 .open = lmv_target_seq_open,
155 .release = seq_release,
158 static struct attribute *lmv_attrs[] = {
159 &lustre_attr_activeobd.attr,
160 &lustre_attr_numobd.attr,
164 static const struct attribute_group lmv_attr_group = {
168 void lprocfs_lmv_init_vars(struct lprocfs_static_vars *lvars)
170 lvars->sysfs_vars = &lmv_attr_group;
171 lvars->obd_vars = lprocfs_lmv_obd_vars;