mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-12 05:48:39 +08:00
929be906fa
Add SPDX license identifier and replace license boilerplate. Corrects various checkpatch errors with the older format for noting the LGPL license. Signed-off-by: Steve French <stfrench@microsoft.com>
106 lines
2.6 KiB
C
106 lines
2.6 KiB
C
// SPDX-License-Identifier: LGPL-2.1
|
|
/*
|
|
* fs/cifs/cache.c - CIFS filesystem cache index structure definitions
|
|
*
|
|
* Copyright (c) 2010 Novell, Inc.
|
|
* Authors(s): Suresh Jayaraman (sjayaraman@suse.de>
|
|
*
|
|
*/
|
|
#include "fscache.h"
|
|
#include "cifs_debug.h"
|
|
|
|
/*
|
|
* CIFS filesystem definition for FS-Cache
|
|
*/
|
|
struct fscache_netfs cifs_fscache_netfs = {
|
|
.name = "cifs",
|
|
.version = 0,
|
|
};
|
|
|
|
/*
|
|
* Register CIFS for caching with FS-Cache
|
|
*/
|
|
int cifs_fscache_register(void)
|
|
{
|
|
return fscache_register_netfs(&cifs_fscache_netfs);
|
|
}
|
|
|
|
/*
|
|
* Unregister CIFS for caching
|
|
*/
|
|
void cifs_fscache_unregister(void)
|
|
{
|
|
fscache_unregister_netfs(&cifs_fscache_netfs);
|
|
}
|
|
|
|
/*
|
|
* Server object for FS-Cache
|
|
*/
|
|
const struct fscache_cookie_def cifs_fscache_server_index_def = {
|
|
.name = "CIFS.server",
|
|
.type = FSCACHE_COOKIE_TYPE_INDEX,
|
|
};
|
|
|
|
static enum
|
|
fscache_checkaux cifs_fscache_super_check_aux(void *cookie_netfs_data,
|
|
const void *data,
|
|
uint16_t datalen,
|
|
loff_t object_size)
|
|
{
|
|
struct cifs_fscache_super_auxdata auxdata;
|
|
const struct cifs_tcon *tcon = cookie_netfs_data;
|
|
|
|
if (datalen != sizeof(auxdata))
|
|
return FSCACHE_CHECKAUX_OBSOLETE;
|
|
|
|
memset(&auxdata, 0, sizeof(auxdata));
|
|
auxdata.resource_id = tcon->resource_id;
|
|
auxdata.vol_create_time = tcon->vol_create_time;
|
|
auxdata.vol_serial_number = tcon->vol_serial_number;
|
|
|
|
if (memcmp(data, &auxdata, datalen) != 0)
|
|
return FSCACHE_CHECKAUX_OBSOLETE;
|
|
|
|
return FSCACHE_CHECKAUX_OKAY;
|
|
}
|
|
|
|
/*
|
|
* Superblock object for FS-Cache
|
|
*/
|
|
const struct fscache_cookie_def cifs_fscache_super_index_def = {
|
|
.name = "CIFS.super",
|
|
.type = FSCACHE_COOKIE_TYPE_INDEX,
|
|
.check_aux = cifs_fscache_super_check_aux,
|
|
};
|
|
|
|
static enum
|
|
fscache_checkaux cifs_fscache_inode_check_aux(void *cookie_netfs_data,
|
|
const void *data,
|
|
uint16_t datalen,
|
|
loff_t object_size)
|
|
{
|
|
struct cifs_fscache_inode_auxdata auxdata;
|
|
struct cifsInodeInfo *cifsi = cookie_netfs_data;
|
|
|
|
if (datalen != sizeof(auxdata))
|
|
return FSCACHE_CHECKAUX_OBSOLETE;
|
|
|
|
memset(&auxdata, 0, sizeof(auxdata));
|
|
auxdata.eof = cifsi->server_eof;
|
|
auxdata.last_write_time_sec = cifsi->vfs_inode.i_mtime.tv_sec;
|
|
auxdata.last_change_time_sec = cifsi->vfs_inode.i_ctime.tv_sec;
|
|
auxdata.last_write_time_nsec = cifsi->vfs_inode.i_mtime.tv_nsec;
|
|
auxdata.last_change_time_nsec = cifsi->vfs_inode.i_ctime.tv_nsec;
|
|
|
|
if (memcmp(data, &auxdata, datalen) != 0)
|
|
return FSCACHE_CHECKAUX_OBSOLETE;
|
|
|
|
return FSCACHE_CHECKAUX_OKAY;
|
|
}
|
|
|
|
const struct fscache_cookie_def cifs_fscache_inode_object_def = {
|
|
.name = "CIFS.uniqueid",
|
|
.type = FSCACHE_COOKIE_TYPE_DATAFILE,
|
|
.check_aux = cifs_fscache_inode_check_aux,
|
|
};
|