1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #define DEBUG_SUBSYSTEM S_CLASS
39 #include <linux/version.h>
40 #include <linux/seq_file.h>
41 #include <asm/statfs.h>
42 #include <lprocfs_status.h>
43 #include <obd_class.h>
46 static struct lprocfs_vars lprocfs_module_vars[] = { {0} };
47 static struct lprocfs_vars lprocfs_obd_vars[] = { {0} };
49 static int lmv_rd_numobd(char *page, char **start, off_t off, int count,
52 struct obd_device *dev = (struct obd_device*)data;
53 struct lmv_desc *desc;
56 desc = &dev->u.lmv.desc;
58 return snprintf(page, count, "%u\n", desc->ld_tgt_count);
62 static int lmv_rd_activeobd(char *page, char **start, off_t off, int count,
65 struct obd_device* dev = (struct obd_device*)data;
66 struct lmv_desc *desc;
69 desc = &dev->u.lmv.desc;
71 return snprintf(page, count, "%u\n", desc->ld_active_tgt_count);
74 static int lmv_rd_desc_uuid(char *page, char **start, off_t off, int count,
77 struct obd_device *dev = (struct obd_device*) data;
83 return snprintf(page, count, "%s\n", lmv->desc.ld_uuid.uuid);
86 static void *lmv_tgt_seq_start(struct seq_file *p, loff_t *pos)
88 struct obd_device *dev = p->private;
89 struct lmv_obd *lmv = &dev->u.lmv;
91 return (*pos >= lmv->desc.ld_tgt_count) ? NULL : &(lmv->tgts[*pos]);
95 static void lmv_tgt_seq_stop(struct seq_file *p, void *v)
100 static void *lmv_tgt_seq_next(struct seq_file *p, void *v, loff_t *pos)
102 struct obd_device *dev = p->private;
103 struct lmv_obd *lmv = &dev->u.lmv;
106 return (*pos >=lmv->desc.ld_tgt_count) ? NULL : &(lmv->tgts[*pos]);
109 static int lmv_tgt_seq_show(struct seq_file *p, void *v)
111 struct lmv_tgt_desc *tgt = v;
112 struct obd_device *dev = p->private;
113 struct lmv_obd *lmv = &dev->u.lmv;
114 int idx = tgt - &(lmv->tgts[0]);
116 return seq_printf(p, "%d: %s %sACTIVE\n", idx, tgt->ltd_uuid.uuid,
117 tgt->ltd_active ? "" : "IN");
120 struct seq_operations lmv_tgt_sops = {
121 .start = lmv_tgt_seq_start,
122 .stop = lmv_tgt_seq_stop,
123 .next = lmv_tgt_seq_next,
124 .show = lmv_tgt_seq_show,
127 static int lmv_target_seq_open(struct inode *inode, struct file *file)
129 struct proc_dir_entry *dp = PDE(inode);
130 struct seq_file *seq;
131 int rc = seq_open(file, &lmv_tgt_sops);
136 seq = file->private_data;
137 seq->private = dp->data;
142 struct lprocfs_vars lprocfs_lmv_obd_vars[] = {
143 { "numobd", lmv_rd_numobd, 0, 0 },
144 { "activeobd", lmv_rd_activeobd, 0, 0 },
145 { "uuid", lprocfs_rd_uuid, 0, 0 },
146 { "desc_uuid", lmv_rd_desc_uuid, 0, 0 },
150 static struct lprocfs_vars lprocfs_lmv_module_vars[] = {
151 { "num_refs", lprocfs_rd_numrefs, 0, 0 },
155 struct file_operations lmv_proc_target_fops = {
156 .owner = THIS_MODULE,
157 .open = lmv_target_seq_open,
160 .release = seq_release,
164 void lprocfs_lmv_init_vars(struct lprocfs_static_vars *lvars)
166 lvars->module_vars = lprocfs_lmv_module_vars;
167 lvars->obd_vars = lprocfs_lmv_obd_vars;