72 lines
1.6 KiB
C
72 lines
1.6 KiB
C
|
// SPDX-License-Identifier: GPL-2.0-or-later
|
||
|
|
/* FS-Cache statistics viewing interface
|
||
|
|
*
|
||
|
|
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
|
||
|
|
* Written by David Howells (dhowells@redhat.com)
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define FSCACHE_DEBUG_LEVEL OPERATION
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <linux/proc_fs.h>
|
||
|
|
#include <linux/seq_file.h>
|
||
|
|
#include "internal.h"
|
||
|
|
|
||
|
|
/*
|
||
|
|
* initialise the /proc/fs/fscache/ directory
|
||
|
|
*/
|
||
|
|
int __init fscache_proc_init(void)
|
||
|
|
{
|
||
|
|
_enter("");
|
||
|
|
|
||
|
|
if (!proc_mkdir("fs/fscache", NULL))
|
||
|
|
goto error_dir;
|
||
|
|
|
||
|
|
if (!proc_create_seq("fs/fscache/cookies", S_IFREG | 0444, NULL,
|
||
|
|
&fscache_cookies_seq_ops))
|
||
|
|
goto error_cookies;
|
||
|
|
|
||
|
|
#ifdef CONFIG_FSCACHE_STATS
|
||
|
|
if (!proc_create_single("fs/fscache/stats", S_IFREG | 0444, NULL,
|
||
|
|
fscache_stats_show))
|
||
|
|
goto error_stats;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef CONFIG_FSCACHE_OBJECT_LIST
|
||
|
|
if (!proc_create("fs/fscache/objects", S_IFREG | 0444, NULL,
|
||
|
|
&fscache_objlist_proc_ops))
|
||
|
|
goto error_objects;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
_leave(" = 0");
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
#ifdef CONFIG_FSCACHE_OBJECT_LIST
|
||
|
|
error_objects:
|
||
|
|
#endif
|
||
|
|
#ifdef CONFIG_FSCACHE_STATS
|
||
|
|
remove_proc_entry("fs/fscache/stats", NULL);
|
||
|
|
error_stats:
|
||
|
|
#endif
|
||
|
|
remove_proc_entry("fs/fscache/cookies", NULL);
|
||
|
|
error_cookies:
|
||
|
|
remove_proc_entry("fs/fscache", NULL);
|
||
|
|
error_dir:
|
||
|
|
_leave(" = -ENOMEM");
|
||
|
|
return -ENOMEM;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* clean up the /proc/fs/fscache/ directory
|
||
|
|
*/
|
||
|
|
void fscache_proc_cleanup(void)
|
||
|
|
{
|
||
|
|
#ifdef CONFIG_FSCACHE_OBJECT_LIST
|
||
|
|
remove_proc_entry("fs/fscache/objects", NULL);
|
||
|
|
#endif
|
||
|
|
#ifdef CONFIG_FSCACHE_STATS
|
||
|
|
remove_proc_entry("fs/fscache/stats", NULL);
|
||
|
|
#endif
|
||
|
|
remove_proc_entry("fs/fscache/cookies", NULL);
|
||
|
|
remove_proc_entry("fs/fscache", NULL);
|
||
|
|
}
|