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/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 only,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License version 2 for more details (a copy is included
* in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
* http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
/*
* Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
* Copyright (c) 2012, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Lustre is a trademark of Sun Microsystems, Inc.
*/
#define DEBUG_SUBSYSTEM S_CLASS
#include <linux/seq_file.h>
#include <linux/statfs.h>
#include "../include/lprocfs_status.h"
#include "../include/obd_class.h"
#include "lmv_internal.h"
static ssize_t numobd_show(struct kobject *kobj, struct attribute *attr,
char *buf)
{
struct obd_device *dev = container_of(kobj, struct obd_device,
obd_kobj);
struct lmv_desc *desc;
desc = &dev->u.lmv.desc;
return sprintf(buf, "%u\n", desc->ld_tgt_count);
}
LUSTRE_RO_ATTR(numobd);
static ssize_t activeobd_show(struct kobject *kobj, struct attribute *attr,
char *buf)
{
struct obd_device *dev = container_of(kobj, struct obd_device,
obd_kobj);
struct lmv_desc *desc;
desc = &dev->u.lmv.desc;
return sprintf(buf, "%u\n", desc->ld_active_tgt_count);
}
LUSTRE_RO_ATTR(activeobd);
static int lmv_desc_uuid_seq_show(struct seq_file *m, void *v)
{
struct obd_device *dev = (struct obd_device *)m->private;
struct lmv_obd *lmv;
LASSERT(dev);
lmv = &dev->u.lmv;
seq_printf(m, "%s\n", lmv->desc.ld_uuid.uuid);
return 0;
}
LPROC_SEQ_FOPS_RO(lmv_desc_uuid);
static void *lmv_tgt_seq_start(struct seq_file *p, loff_t *pos)
{
struct obd_device *dev = p->private;
struct lmv_obd *lmv = &dev->u.lmv;
while (*pos < lmv->tgts_size) {
if (lmv->tgts[*pos])
return lmv->tgts[*pos];
++*pos;
}
return NULL;
}
static void lmv_tgt_seq_stop(struct seq_file *p, void *v)
{
return;
}
static void *lmv_tgt_seq_next(struct seq_file *p, void *v, loff_t *pos)
{
struct obd_device *dev = p->private;
struct lmv_obd *lmv = &dev->u.lmv;
++*pos;
while (*pos < lmv->tgts_size) {
if (lmv->tgts[*pos])
return lmv->tgts[*pos];
++*pos;
}
return NULL;
}
static int lmv_tgt_seq_show(struct seq_file *p, void *v)
{
struct lmv_tgt_desc *tgt = v;
if (!tgt)
return 0;
seq_printf(p, "%u: %s %sACTIVE\n",
tgt->ltd_idx, tgt->ltd_uuid.uuid,
tgt->ltd_active ? "" : "IN");
return 0;
}
static const struct seq_operations lmv_tgt_sops = {
.start = lmv_tgt_seq_start,
.stop = lmv_tgt_seq_stop,
.next = lmv_tgt_seq_next,
.show = lmv_tgt_seq_show,
};
static int lmv_target_seq_open(struct inode *inode, struct file *file)
{
struct seq_file *seq;
int rc;
rc = seq_open(file, &lmv_tgt_sops);
if (rc)
return rc;
seq = file->private_data;
seq->private = inode->i_private;
return 0;
}
static struct lprocfs_vars lprocfs_lmv_obd_vars[] = {
{ "desc_uuid", &lmv_desc_uuid_fops, NULL, 0 },
{ NULL }
};
const struct file_operations lmv_proc_target_fops = {
.owner = THIS_MODULE,
.open = lmv_target_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release,
};
static struct attribute *lmv_attrs[] = {
&lustre_attr_activeobd.attr,
&lustre_attr_numobd.attr,
NULL,
};
static struct attribute_group lmv_attr_group = {
.attrs = lmv_attrs,
};
void lprocfs_lmv_init_vars(struct lprocfs_static_vars *lvars)
{
lvars->sysfs_vars = &lmv_attr_group;
lvars->obd_vars = lprocfs_lmv_obd_vars;
}
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