Pileus Git - ~andy/linux/blob - drivers/staging/lustre/lustre/lov/lproc_lov.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   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.
   9  *
  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).
  15  *
  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.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2012, Intel Corporation.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  */
  36 #define DEBUG_SUBSYSTEM S_CLASS
  37
  38 #include <asm/statfs.h>
  39 #include <lprocfs_status.h>
  40 #include <obd_class.h>
  41 #include <linux/seq_file.h>
  42 #include "lov_internal.h"
  43
  44 static int lov_stripesize_seq_show(struct seq_file *m, void *v)
  45 {
  46         struct obd_device *dev = (struct obd_device *)m->private;
  47         struct lov_desc *desc;
  48
  49         LASSERT(dev != NULL);
  50         desc = &dev->u.lov.desc;
  51         return seq_printf(m, LPU64"\n", desc->ld_default_stripe_size);
  52 }
  53
  54 static ssize_t lov_stripesize_seq_write(struct file *file, const char *buffer,
  55                                     size_t count, loff_t *off)
  56 {
  57         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
  58         struct lov_desc *desc;
  59         __u64 val;
  60         int rc;
  61
  62         LASSERT(dev != NULL);
  63         desc = &dev->u.lov.desc;
  64         rc = lprocfs_write_u64_helper(buffer, count, &val);
  65         if (rc)
  66                 return rc;
  67
  68         lov_fix_desc_stripe_size(&val);
  69         desc->ld_default_stripe_size = val;
  70         return count;
  71 }
  72 LPROC_SEQ_FOPS(lov_stripesize);
  73
  74 static int lov_stripeoffset_seq_show(struct seq_file *m, void *v)
  75 {
  76         struct obd_device *dev = (struct obd_device *)m->private;
  77         struct lov_desc *desc;
  78
  79         LASSERT(dev != NULL);
  80         desc = &dev->u.lov.desc;
  81         return seq_printf(m, LPU64"\n", desc->ld_default_stripe_offset);
  82 }
  83
  84 static ssize_t lov_stripeoffset_seq_write(struct file *file, const char *buffer,
  85                                       size_t count, loff_t *off)
  86 {
  87         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
  88         struct lov_desc *desc;
  89         __u64 val;
  90         int rc;
  91
  92         LASSERT(dev != NULL);
  93         desc = &dev->u.lov.desc;
  94         rc = lprocfs_write_u64_helper(buffer, count, &val);
  95         if (rc)
  96                 return rc;
  97
  98         desc->ld_default_stripe_offset = val;
  99         return count;
 100 }
 101 LPROC_SEQ_FOPS(lov_stripeoffset);
 102
 103 static int lov_stripetype_seq_show(struct seq_file *m, void *v)
 104 {
 105         struct obd_device *dev = (struct obd_device *)m->private;
 106         struct lov_desc *desc;
 107
 108         LASSERT(dev != NULL);
 109         desc = &dev->u.lov.desc;
 110         return seq_printf(m, "%u\n", desc->ld_pattern);
 111 }
 112
 113 static ssize_t lov_stripetype_seq_write(struct file *file, const char *buffer,
 114                                     size_t count, loff_t *off)
 115 {
 116         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 117         struct lov_desc *desc;
 118         int val, rc;
 119
 120         LASSERT(dev != NULL);
 121         desc = &dev->u.lov.desc;
 122         rc = lprocfs_write_helper(buffer, count, &val);
 123         if (rc)
 124                 return rc;
 125
 126         lov_fix_desc_pattern(&val);
 127         desc->ld_pattern = val;
 128         return count;
 129 }
 130 LPROC_SEQ_FOPS(lov_stripetype);
 131
 132 static int lov_stripecount_seq_show(struct seq_file *m, void *v)
 133 {
 134         struct obd_device *dev = (struct obd_device *)m->private;
 135         struct lov_desc *desc;
 136
 137         LASSERT(dev != NULL);
 138         desc = &dev->u.lov.desc;
 139         return seq_printf(m, "%d\n",
 140                         (__s16)(desc->ld_default_stripe_count + 1) - 1);
 141 }
 142
 143 static ssize_t lov_stripecount_seq_write(struct file *file, const char *buffer,
 144                                      size_t count, loff_t *off)
 145 {
 146         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 147         struct lov_desc *desc;
 148         int val, rc;
 149
 150         LASSERT(dev != NULL);
 151         desc = &dev->u.lov.desc;
 152         rc = lprocfs_write_helper(buffer, count, &val);
 153         if (rc)
 154                 return rc;
 155
 156         lov_fix_desc_stripe_count(&val);
 157         desc->ld_default_stripe_count = val;
 158         return count;
 159 }
 160 LPROC_SEQ_FOPS(lov_stripecount);
 161
 162 static int lov_numobd_seq_show(struct seq_file *m, void *v)
 163 {
 164         struct obd_device *dev = (struct obd_device *)m->private;
 165         struct lov_desc *desc;
 166
 167         LASSERT(dev != NULL);
 168         desc = &dev->u.lov.desc;
 169         return seq_printf(m, "%u\n", desc->ld_tgt_count);
 170 }
 171 LPROC_SEQ_FOPS_RO(lov_numobd);
 172
 173 static int lov_activeobd_seq_show(struct seq_file *m, void *v)
 174 {
 175         struct obd_device *dev = (struct obd_device *)m->private;
 176         struct lov_desc *desc;
 177
 178         LASSERT(dev != NULL);
 179         desc = &dev->u.lov.desc;
 180         return seq_printf(m, "%u\n", desc->ld_active_tgt_count);
 181 }
 182 LPROC_SEQ_FOPS_RO(lov_activeobd);
 183
 184 static int lov_desc_uuid_seq_show(struct seq_file *m, void *v)
 185 {
 186         struct obd_device *dev = (struct obd_device *)m->private;
 187         struct lov_obd *lov;
 188
 189         LASSERT(dev != NULL);
 190         lov = &dev->u.lov;
 191         return seq_printf(m, "%s\n", lov->desc.ld_uuid.uuid);
 192 }
 193 LPROC_SEQ_FOPS_RO(lov_desc_uuid);
 194
 195 static void *lov_tgt_seq_start(struct seq_file *p, loff_t *pos)
 196 {
 197         struct obd_device *dev = p->private;
 198         struct lov_obd *lov = &dev->u.lov;
 199
 200         while (*pos < lov->desc.ld_tgt_count) {
 201                 if (lov->lov_tgts[*pos])
 202                         return lov->lov_tgts[*pos];
 203                 ++*pos;
 204         }
 205         return NULL;
 206 }
 207
 208 static void lov_tgt_seq_stop(struct seq_file *p, void *v)
 209 {
 210 }
 211
 212 static void *lov_tgt_seq_next(struct seq_file *p, void *v, loff_t *pos)
 213 {
 214         struct obd_device *dev = p->private;
 215         struct lov_obd *lov = &dev->u.lov;
 216
 217         while (++*pos < lov->desc.ld_tgt_count) {
 218                 if (lov->lov_tgts[*pos])
 219                         return lov->lov_tgts[*pos];
 220         }
 221         return NULL;
 222 }
 223
 224 static int lov_tgt_seq_show(struct seq_file *p, void *v)
 225 {
 226         struct lov_tgt_desc *tgt = v;
 227         return seq_printf(p, "%d: %s %sACTIVE\n", tgt->ltd_index,
 228                           obd_uuid2str(&tgt->ltd_uuid),
 229                           tgt->ltd_active ? "" : "IN");
 230 }
 231
 232 struct seq_operations lov_tgt_sops = {
 233         .start = lov_tgt_seq_start,
 234         .stop = lov_tgt_seq_stop,
 235         .next = lov_tgt_seq_next,
 236         .show = lov_tgt_seq_show,
 237 };
 238
 239 static int lov_target_seq_open(struct inode *inode, struct file *file)
 240 {
 241         struct seq_file *seq;
 242         int rc;
 243
 244         rc = seq_open(file, &lov_tgt_sops);
 245         if (rc)
 246                 return rc;
 247
 248         seq = file->private_data;
 249         seq->private = PDE_DATA(inode);
 250         return 0;
 251 }
 252
 253 LPROC_SEQ_FOPS_RO_TYPE(lov, uuid);
 254 LPROC_SEQ_FOPS_RO_TYPE(lov, filestotal);
 255 LPROC_SEQ_FOPS_RO_TYPE(lov, filesfree);
 256 LPROC_SEQ_FOPS_RO_TYPE(lov, blksize);
 257 LPROC_SEQ_FOPS_RO_TYPE(lov, kbytestotal);
 258 LPROC_SEQ_FOPS_RO_TYPE(lov, kbytesfree);
 259 LPROC_SEQ_FOPS_RO_TYPE(lov, kbytesavail);
 260
 261 struct lprocfs_vars lprocfs_lov_obd_vars[] = {
 262         { "uuid",         &lov_uuid_fops,         NULL, 0 },
 263         { "stripesize",   &lov_stripesize_fops,   NULL },
 264         { "stripeoffset", &lov_stripeoffset_fops, NULL },
 265         { "stripecount",  &lov_stripecount_fops,  NULL },
 266         { "stripetype",   &lov_stripetype_fops,   NULL },
 267         { "numobd",       &lov_numobd_fops,       NULL, 0 },
 268         { "activeobd",    &lov_activeobd_fops,    NULL, 0 },
 269         { "filestotal",   &lov_filestotal_fops,   NULL, 0 },
 270         { "filesfree",    &lov_filesfree_fops,    NULL, 0 },
 271         /*{ "filegroups", lprocfs_rd_filegroups,  NULL, 0 },*/
 272         { "blocksize",    &lov_blksize_fops,      NULL, 0 },
 273         { "kbytestotal",  &lov_kbytestotal_fops,  NULL, 0 },
 274         { "kbytesfree",   &lov_kbytesfree_fops,   NULL, 0 },
 275         { "kbytesavail",  &lov_kbytesavail_fops,  NULL, 0 },
 276         { "desc_uuid",    &lov_desc_uuid_fops,    NULL, 0 },
 277         { NULL }
 278 };
 279
 280 LPROC_SEQ_FOPS_RO_TYPE(lov, numrefs);
 281
 282 static struct lprocfs_vars lprocfs_lov_module_vars[] = {
 283         { "num_refs",     &lov_numrefs_fops,     NULL, 0 },
 284         { NULL }
 285 };
 286
 287 void lprocfs_lov_init_vars(struct lprocfs_static_vars *lvars)
 288 {
 289     lvars->module_vars  = lprocfs_lov_module_vars;
 290     lvars->obd_vars     = lprocfs_lov_obd_vars;
 291 }
 292
 293 const struct file_operations lov_proc_target_fops = {
 294         .owner   = THIS_MODULE,
 295         .open    = lov_target_seq_open,
 296         .read    = seq_read,
 297         .llseek  = seq_lseek,
 298         .release = lprocfs_seq_release,
 299 };