zfs-builds-mm/zfs-0.8.2/include/spl/sys/procfs_list.h

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2019-10-24 23:13:56 +02:00
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2018 by Delphix. All rights reserved.
*/
#ifndef _SPL_PROCFS_LIST_H
#define _SPL_PROCFS_LIST_H
#include <sys/kstat.h>
#include <sys/mutex.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
typedef struct procfs_list procfs_list_t;
struct procfs_list {
/* Accessed only by user of a procfs_list */
void *pl_private;
/*
* Accessed both by user of a procfs_list and by procfs_list
* implementation
*/
kmutex_t pl_lock;
list_t pl_list;
/* Accessed only by procfs_list implementation */
uint64_t pl_next_id;
int (*pl_show)(struct seq_file *f, void *p);
int (*pl_show_header)(struct seq_file *f);
int (*pl_clear)(procfs_list_t *procfs_list);
size_t pl_node_offset;
kstat_proc_entry_t pl_kstat_entry;
};
typedef struct procfs_list_node {
list_node_t pln_link;
uint64_t pln_id;
} procfs_list_node_t;
void procfs_list_install(const char *module,
const char *name,
mode_t mode,
procfs_list_t *procfs_list,
int (*show)(struct seq_file *f, void *p),
int (*show_header)(struct seq_file *f),
int (*clear)(procfs_list_t *procfs_list),
size_t procfs_list_node_off);
void procfs_list_uninstall(procfs_list_t *procfs_list);
void procfs_list_destroy(procfs_list_t *procfs_list);
void procfs_list_add(procfs_list_t *procfs_list, void *p);
#endif /* _SPL_PROCFS_LIST_H */