-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/*
+ * GPL HEADER START
*
- * lustre/fld/lproc_fld.c
- * FLD (FIDs Location Database)
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * Copyright (c) 2006 Cluster File Systems, Inc.
- * Author: Yury Umanets <umka@clusterfs.com>
+ * 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 file is part of the Lustre file system, http://www.lustre.org
- * Lustre is a trademark of Cluster File Systems, Inc.
+ * 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 may have signed or agreed to another license before downloading
- * this software. If so, you are bound by the terms and conditions
- * of that agreement, and the following does not apply to you. See the
- * LICENSE file included with this distribution for more information.
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
*
- * If you did not agree to a different license, then this copy of Lustre
- * is open source software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
*
- * In either case, Lustre 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
- * license text for more details.
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (c) 2012, 2013, Intel Corporation.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * lustre/fld/lproc_fld.c
+ *
+ * FLD (FIDs Location Database)
+ *
+ * Author: Yury Umanets <umka@clusterfs.com>
+ * Di Wang <di.wang@whamcloud.com>
*/
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
#define DEBUG_SUBSYSTEM S_FLD
#ifdef __KERNEL__
#include <obd_support.h>
#include <lustre_req_layout.h>
#include <lustre_fld.h>
+#include <lustre_fid.h>
#include "fld_internal.h"
#ifdef LPROCFS
int total = 0, rc;
ENTRY;
- LASSERT(fld != NULL);
+ LASSERT(fld != NULL);
- spin_lock(&fld->lcf_lock);
- list_for_each_entry(target,
- &fld->lcf_targets, ft_chain)
+ spin_lock(&fld->lcf_lock);
+ cfs_list_for_each_entry(target,
+ &fld->lcf_targets, ft_chain)
{
rc = snprintf(page, count, "%s\n",
fld_target_name(target));
if (count == 0)
break;
}
- spin_unlock(&fld->lcf_lock);
+ spin_unlock(&fld->lcf_lock);
RETURN(total);
}
int rc;
ENTRY;
- LASSERT(fld != NULL);
+ LASSERT(fld != NULL);
- spin_lock(&fld->lcf_lock);
- rc = snprintf(page, count, "%s\n",
- fld->lcf_hash->fh_name);
- spin_unlock(&fld->lcf_lock);
+ spin_lock(&fld->lcf_lock);
+ rc = snprintf(page, count, "%s\n", fld->lcf_hash->fh_name);
+ spin_unlock(&fld->lcf_lock);
RETURN(rc);
}
}
}
- if (hash != NULL) {
- spin_lock(&fld->lcf_lock);
- fld->lcf_hash = hash;
- spin_unlock(&fld->lcf_lock);
+ if (hash != NULL) {
+ spin_lock(&fld->lcf_lock);
+ fld->lcf_hash = hash;
+ spin_unlock(&fld->lcf_lock);
- CDEBUG(D_INFO, "%s: Changed hash to \"%s\"\n",
- fld->lcf_name, hash->fh_name);
- }
-
- RETURN(count);
+ CDEBUG(D_INFO, "%s: Changed hash to \"%s\"\n",
+ fld->lcf_name, hash->fh_name);
+ }
+
+ RETURN(count);
}
static int
fld_cache_flush(fld->lcf_cache);
CDEBUG(D_INFO, "%s: Lookup cache is flushed\n", fld->lcf_name);
-
+
RETURN(count);
}
+struct fld_seq_param {
+ struct lu_env fsp_env;
+ struct dt_it *fsp_it;
+ struct lu_server_fld *fsp_fld;
+ int fsp_stop:1;
+};
+
+static void *fldb_seq_start(struct seq_file *p, loff_t *pos)
+{
+ struct fld_seq_param *param = p->private;
+ struct lu_server_fld *fld;
+ struct dt_object *obj;
+ const struct dt_it_ops *iops;
+
+ if (param == NULL || param->fsp_stop)
+ return NULL;
+
+ fld = param->fsp_fld;
+ obj = fld->lsf_obj;
+ LASSERT(obj != NULL);
+ iops = &obj->do_index_ops->dio_it;
+
+ iops->load(¶m->fsp_env, param->fsp_it, *pos);
+
+ *pos = be64_to_cpu(*(__u64 *)iops->key(¶m->fsp_env, param->fsp_it));
+ return param;
+}
+
+static void fldb_seq_stop(struct seq_file *p, void *v)
+{
+ struct fld_seq_param *param = p->private;
+ const struct dt_it_ops *iops;
+ struct lu_server_fld *fld;
+ struct dt_object *obj;
+
+ if (param == NULL)
+ return;
+
+ fld = param->fsp_fld;
+ obj = fld->lsf_obj;
+ LASSERT(obj != NULL);
+ iops = &obj->do_index_ops->dio_it;
+
+ iops->put(¶m->fsp_env, param->fsp_it);
+}
+
+static void *fldb_seq_next(struct seq_file *p, void *v, loff_t *pos)
+{
+ struct fld_seq_param *param = p->private;
+ struct lu_server_fld *fld;
+ struct dt_object *obj;
+ const struct dt_it_ops *iops;
+ int rc;
+
+ if (param == NULL || param->fsp_stop)
+ return NULL;
+
+ fld = param->fsp_fld;
+ obj = fld->lsf_obj;
+ LASSERT(obj != NULL);
+ iops = &obj->do_index_ops->dio_it;
+
+ rc = iops->next(¶m->fsp_env, param->fsp_it);
+ if (rc > 0) {
+ param->fsp_stop = 1;
+ return NULL;
+ }
+
+ *pos = be64_to_cpu(*(__u64 *)iops->key(¶m->fsp_env, param->fsp_it));
+ return param;
+}
+
+static int fldb_seq_show(struct seq_file *p, void *v)
+{
+ struct fld_seq_param *param = p->private;
+ struct lu_server_fld *fld;
+ struct dt_object *obj;
+ const struct dt_it_ops *iops;
+ struct fld_thread_info *info;
+ struct lu_seq_range *fld_rec;
+ int rc;
+
+ if (param == NULL || param->fsp_stop)
+ return 0;
+
+ fld = param->fsp_fld;
+ obj = fld->lsf_obj;
+ LASSERT(obj != NULL);
+ iops = &obj->do_index_ops->dio_it;
+
+ info = lu_context_key_get(¶m->fsp_env.le_ctx,
+ &fld_thread_key);
+ fld_rec = &info->fti_rec;
+ rc = iops->rec(¶m->fsp_env, param->fsp_it,
+ (struct dt_rec *)fld_rec, 0);
+ if (rc != 0) {
+ CERROR("%s:read record error: rc %d\n",
+ fld->lsf_name, rc);
+ } else if (fld_rec->lsr_start != 0) {
+ range_be_to_cpu(fld_rec, fld_rec);
+ rc = seq_printf(p, DRANGE"\n", PRANGE(fld_rec));
+ }
+
+ return rc;
+}
+
+struct seq_operations fldb_sops = {
+ .start = fldb_seq_start,
+ .stop = fldb_seq_stop,
+ .next = fldb_seq_next,
+ .show = fldb_seq_show,
+};
+
+static int fldb_seq_open(struct inode *inode, struct file *file)
+{
+ struct proc_dir_entry *dp = PDE(inode);
+ struct seq_file *seq;
+ struct lu_server_fld *fld = (struct lu_server_fld *)dp->data;
+ struct dt_object *obj;
+ const struct dt_it_ops *iops;
+ struct fld_seq_param *param = NULL;
+ int env_init = 0;
+ int rc;
+
+ LPROCFS_ENTRY_AND_CHECK(dp);
+ rc = seq_open(file, &fldb_sops);
+ if (rc)
+ GOTO(out, rc);
+
+ obj = fld->lsf_obj;
+ if (obj == NULL) {
+ seq = file->private_data;
+ seq->private = NULL;
+ return 0;
+ }
+
+ OBD_ALLOC_PTR(param);
+ if (param == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ rc = lu_env_init(¶m->fsp_env, LCT_MD_THREAD);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ env_init = 1;
+ iops = &obj->do_index_ops->dio_it;
+ param->fsp_it = iops->init(¶m->fsp_env, obj, 0, NULL);
+ if (IS_ERR(param->fsp_it))
+ GOTO(out, rc = PTR_ERR(param->fsp_it));
+
+ param->fsp_fld = fld;
+ param->fsp_stop = 0;
+
+ seq = file->private_data;
+ seq->private = param;
+out:
+ if (rc != 0) {
+ if (env_init == 1)
+ lu_env_fini(¶m->fsp_env);
+ if (param != NULL)
+ OBD_FREE_PTR(param);
+ LPROCFS_EXIT();
+ }
+ return rc;
+}
+
+static int fldb_seq_release(struct inode *inode, struct file *file)
+{
+ struct seq_file *seq = file->private_data;
+ struct fld_seq_param *param;
+ struct lu_server_fld *fld;
+ struct dt_object *obj;
+ const struct dt_it_ops *iops;
+
+ param = seq->private;
+ if (param == NULL) {
+ lprocfs_seq_release(inode, file);
+ return 0;
+ }
+
+ fld = param->fsp_fld;
+ obj = fld->lsf_obj;
+ LASSERT(obj != NULL);
+ iops = &obj->do_index_ops->dio_it;
+
+ LASSERT(iops != NULL);
+ LASSERT(obj != NULL);
+ LASSERT(param->fsp_it != NULL);
+ iops->fini(¶m->fsp_env, param->fsp_it);
+ lu_env_fini(¶m->fsp_env);
+ OBD_FREE_PTR(param);
+ lprocfs_seq_release(inode, file);
+
+ return 0;
+}
+
struct lprocfs_vars fld_server_proc_list[] = {
{ NULL }};
{ "hash", fld_proc_read_hash, fld_proc_write_hash, NULL },
{ "cache_flush", NULL, fld_proc_write_cache_flush, NULL },
{ NULL }};
+
+struct file_operations fld_proc_seq_fops = {
+ .owner = THIS_MODULE,
+ .open = fldb_seq_open,
+ .read = seq_read,
+ .release = fldb_seq_release,
+};
+
#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff