* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2012, Whamcloud, Inc.
+ * Copyright (c) 2012, 2013, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
}
struct fld_seq_param {
- struct lu_env fsp_env;
- struct dt_it *fsp_it;
+ struct lu_env fsp_env;
+ struct dt_it *fsp_it;
+ struct lu_server_fld *fsp_fld;
+ unsigned int fsp_stop:1;
};
static void *fldb_seq_start(struct seq_file *p, loff_t *pos)
{
- struct lu_server_fld *fld = p->private;
- struct dt_object *obj;
- const struct dt_it_ops *iops;
- struct fld_seq_param *param;
+ struct fld_seq_param *param = p->private;
+ struct lu_server_fld *fld;
+ struct dt_object *obj;
+ const struct dt_it_ops *iops;
- if (fld->lsf_obj == NULL)
+ 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;
- OBD_ALLOC_PTR(param);
- if (param == NULL)
- return ERR_PTR(-ENOMEM);
-
- lu_env_init(¶m->fsp_env, LCT_MD_THREAD);
- param->fsp_it = iops->init(¶m->fsp_env, obj, 0, NULL);
-
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 lu_server_fld *fld = p->private;
- struct dt_object *obj;
+ struct fld_seq_param *param = p->private;
const struct dt_it_ops *iops;
- struct fld_seq_param *param = (struct fld_seq_param *)v;
+ struct lu_server_fld *fld;
+ struct dt_object *obj;
- if (fld->lsf_obj == NULL)
+ if (param == NULL)
return;
+ fld = param->fsp_fld;
obj = fld->lsf_obj;
+ LASSERT(obj != NULL);
iops = &obj->do_index_ops->dio_it;
- if (IS_ERR(param) || param == NULL)
- return;
iops->put(¶m->fsp_env, param->fsp_it);
- iops->fini(¶m->fsp_env, param->fsp_it);
- lu_env_fini(¶m->fsp_env);
- OBD_FREE_PTR(param);
-
- return;
}
static void *fldb_seq_next(struct seq_file *p, void *v, loff_t *pos)
{
- struct lu_server_fld *fld = p->private;
+ struct fld_seq_param *param = p->private;
+ struct lu_server_fld *fld;
struct dt_object *obj;
const struct dt_it_ops *iops;
- struct fld_seq_param *param = (struct fld_seq_param *)v;
int rc;
- if (fld->lsf_obj == NULL)
+ 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->get(¶m->fsp_env, param->fsp_it,
- (const struct dt_key *)pos);
-
rc = iops->next(¶m->fsp_env, param->fsp_it);
if (rc > 0) {
- iops->put(¶m->fsp_env, param->fsp_it);
- iops->fini(¶m->fsp_env, param->fsp_it);
- lu_env_fini(¶m->fsp_env);
- OBD_FREE_PTR(param);
+ param->fsp_stop = 1;
return NULL;
}
- *pos = *(loff_t *)iops->key(¶m->fsp_env, param->fsp_it);
-
+ *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 lu_server_fld *fld = p->private;
- struct dt_object *obj = fld->lsf_obj;
- struct fld_seq_param *param = (struct fld_seq_param *)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 (fld->lsf_obj == NULL)
+ 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,
rc = seq_printf(p, DRANGE"\n", PRANGE(fld_rec));
}
- iops->put(¶m->fsp_env, param->fsp_it);
-
return rc;
}
static int fldb_seq_open(struct inode *inode, struct file *file)
{
- struct proc_dir_entry *dp = PDE(inode);
- struct seq_file *seq;
- int rc;
+ 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) {
- LPROCFS_EXIT();
- return rc;
+ 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 = dp->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;
}
.owner = THIS_MODULE,
.open = fldb_seq_open,
.read = seq_read,
- .llseek = seq_lseek,
- .release = lprocfs_seq_release,
+ .release = fldb_seq_release,
};
#endif