mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-21 08:53:41 +00:00
bd238fb431
This patchset moves non-filesystem interfaces of v9fs from fs/9p to net/9p. It moves the transport, packet marshalling and connection layers to net/9p leaving only the VFS related files in fs/9p. This work is being done in preparation for in-kernel 9p servers as well as alternate 9p clients (other than VFS). Signed-off-by: Latchesar Ionkov <lucho@ionkov.net> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
81 lines
1.9 KiB
C
81 lines
1.9 KiB
C
/*
|
|
* linux/fs/9p/vfs_addr.c
|
|
*
|
|
* This file contians vfs address (mmap) ops for 9P2000.
|
|
*
|
|
* Copyright (C) 2005 by Eric Van Hensbergen <ericvh@gmail.com>
|
|
* Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2
|
|
* as published by the Free Software Foundation.
|
|
*
|
|
* 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 for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to:
|
|
* Free Software Foundation
|
|
* 51 Franklin Street, Fifth Floor
|
|
* Boston, MA 02111-1301 USA
|
|
*
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/file.h>
|
|
#include <linux/stat.h>
|
|
#include <linux/string.h>
|
|
#include <linux/inet.h>
|
|
#include <linux/pagemap.h>
|
|
#include <linux/idr.h>
|
|
#include <linux/sched.h>
|
|
#include <net/9p/9p.h>
|
|
#include <net/9p/client.h>
|
|
|
|
#include "v9fs.h"
|
|
#include "v9fs_vfs.h"
|
|
#include "fid.h"
|
|
|
|
/**
|
|
* v9fs_vfs_readpage - read an entire page in from 9P
|
|
*
|
|
* @file: file being read
|
|
* @page: structure to page
|
|
*
|
|
*/
|
|
|
|
static int v9fs_vfs_readpage(struct file *filp, struct page *page)
|
|
{
|
|
int retval;
|
|
loff_t offset;
|
|
char *buffer;
|
|
struct p9_fid *fid;
|
|
|
|
P9_DPRINTK(P9_DEBUG_VFS, "\n");
|
|
fid = filp->private_data;
|
|
buffer = kmap(page);
|
|
offset = page_offset(page);
|
|
|
|
retval = p9_client_readn(fid, buffer, offset, PAGE_CACHE_SIZE);
|
|
if (retval < 0)
|
|
goto done;
|
|
|
|
memset(buffer + retval, 0, PAGE_CACHE_SIZE - retval);
|
|
flush_dcache_page(page);
|
|
SetPageUptodate(page);
|
|
retval = 0;
|
|
|
|
done:
|
|
kunmap(page);
|
|
unlock_page(page);
|
|
return retval;
|
|
}
|
|
|
|
const struct address_space_operations v9fs_addr_operations = {
|
|
.readpage = v9fs_vfs_readpage,
|
|
};
|