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authorDavid Teigland <teigland@redhat.com>2006-01-16 11:50:04 -0500
committerSteven Whitehouse <swhiteho@redhat.com>2006-01-16 11:50:04 -0500
commitb3b94faa5fe5968827ba0640ee9fba4b3e7f736e (patch)
tree70bd6068b050d2c46e338484f8b03fae4365c6c3 /fs/gfs2/jdata.h
parentf7825dcf8c7301cfd3724eb40c5b443cc85ab7b8 (diff)
[GFS2] The core of GFS2
This patch contains all the core files for GFS2. Signed-off-by: David Teigland <teigland@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/jdata.h')
-rw-r--r--fs/gfs2/jdata.h52
1 files changed, 52 insertions, 0 deletions
diff --git a/fs/gfs2/jdata.h b/fs/gfs2/jdata.h
new file mode 100644
index 000000000000..95e18fcb8f82
--- /dev/null
+++ b/fs/gfs2/jdata.h
@@ -0,0 +1,52 @@
1/*
2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
4 *
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
7 * of the GNU General Public License v.2.
8 */
9
10#ifndef __FILE_DOT_H__
11#define __FILE_DOT_H__
12
13int gfs2_jdata_get_buffer(struct gfs2_inode *ip, uint64_t block, int new,
14 struct buffer_head **bhp);
15
16typedef int (*read_copy_fn_t) (struct buffer_head *bh, char **buf,
17 unsigned int offset, unsigned int size);
18typedef int (*write_copy_fn_t) (struct gfs2_inode *ip,
19 struct buffer_head *bh, const char **buf,
20 unsigned int offset, unsigned int size);
21
22int gfs2_copy2mem(struct buffer_head *bh, char **buf,
23 unsigned int offset, unsigned int size);
24int gfs2_copy2user(struct buffer_head *bh, char __user **buf,
25 unsigned int offset, unsigned int size);
26int gfs2_jdata_read(struct gfs2_inode *ip, char __user *buf,
27 uint64_t offset, unsigned int size,
28 read_copy_fn_t copy_fn);
29
30int gfs2_copy_from_mem(struct gfs2_inode *ip,
31 struct buffer_head *bh, const char **buf,
32 unsigned int offset, unsigned int size);
33int gfs2_copy_from_user(struct gfs2_inode *ip,
34 struct buffer_head *bh, const char __user **buf,
35 unsigned int offset, unsigned int size);
36int gfs2_jdata_write(struct gfs2_inode *ip, const char __user *buf,
37 uint64_t offset, unsigned int size,
38 write_copy_fn_t copy_fn);
39
40static inline int gfs2_jdata_read_mem(struct gfs2_inode *ip, char *buf,
41 uint64_t offset, unsigned int size)
42{
43 return gfs2_jdata_read(ip, (__force char __user *)buf, offset, size, gfs2_copy2mem);
44}
45
46static inline int gfs2_jdata_write_mem(struct gfs2_inode *ip, const char *buf,
47 uint64_t offset, unsigned int size)
48{
49 return gfs2_jdata_write(ip, (__force const char __user *)buf, offset, size, gfs2_copy_from_mem);
50}
51
52#endif /* __FILE_DOT_H__ */