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4e3e43ad
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体验新版 GitCode,发现更多精彩内容 >>
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4e3e43ad
编写于
10月 17, 2006
作者:
T
Trond Myklebust
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
SUNRPC: Add __(read|write)_bytes_from_xdr_buf
Signed-off-by:
N
Trond Myklebust
<
Trond.Myklebust@netapp.com
>
上级
1e78957e
变更
1
显示空白变更内容
内联
并排
Showing
1 changed file
with
37 addition
and
29 deletion
+37
-29
net/sunrpc/xdr.c
net/sunrpc/xdr.c
+37
-29
未找到文件。
net/sunrpc/xdr.c
浏览文件 @
4e3e43ad
...
...
@@ -688,56 +688,64 @@ xdr_buf_subsegment(struct xdr_buf *buf, struct xdr_buf *subbuf,
return
0
;
}
/* obj is assumed to point to allocated memory of size at least len: */
int
read_bytes_from_xdr_buf
(
struct
xdr_buf
*
buf
,
unsigned
int
base
,
void
*
obj
,
unsigned
int
len
)
static
void
__read_bytes_from_xdr_buf
(
struct
xdr_buf
*
subbuf
,
void
*
obj
,
unsigned
int
len
)
{
struct
xdr_buf
subbuf
;
unsigned
int
this_len
;
int
status
;
status
=
xdr_buf_subsegment
(
buf
,
&
subbuf
,
base
,
len
);
if
(
status
)
goto
out
;
this_len
=
min_t
(
unsigned
int
,
len
,
subbuf
.
head
[
0
].
iov_len
);
memcpy
(
obj
,
subbuf
.
head
[
0
].
iov_base
,
this_len
);
this_len
=
min_t
(
unsigned
int
,
len
,
subbuf
->
head
[
0
].
iov_len
);
memcpy
(
obj
,
subbuf
->
head
[
0
].
iov_base
,
this_len
);
len
-=
this_len
;
obj
+=
this_len
;
this_len
=
min_t
(
unsigned
int
,
len
,
subbuf
.
page_len
);
this_len
=
min_t
(
unsigned
int
,
len
,
subbuf
->
page_len
);
if
(
this_len
)
_copy_from_pages
(
obj
,
subbuf
.
pages
,
subbuf
.
page_base
,
this_len
);
_copy_from_pages
(
obj
,
subbuf
->
pages
,
subbuf
->
page_base
,
this_len
);
len
-=
this_len
;
obj
+=
this_len
;
this_len
=
min_t
(
unsigned
int
,
len
,
subbuf
.
tail
[
0
].
iov_len
);
memcpy
(
obj
,
subbuf
.
tail
[
0
].
iov_base
,
this_len
);
out:
return
status
;
this_len
=
min_t
(
unsigned
int
,
len
,
subbuf
->
tail
[
0
].
iov_len
);
memcpy
(
obj
,
subbuf
->
tail
[
0
].
iov_base
,
this_len
);
}
/* obj is assumed to point to allocated memory of size at least len: */
int
write_bytes_to_xdr_buf
(
struct
xdr_buf
*
buf
,
unsigned
int
base
,
void
*
obj
,
unsigned
int
len
)
int
read_bytes_from_xdr_buf
(
struct
xdr_buf
*
buf
,
unsigned
int
base
,
void
*
obj
,
unsigned
int
len
)
{
struct
xdr_buf
subbuf
;
unsigned
int
this_len
;
int
status
;
status
=
xdr_buf_subsegment
(
buf
,
&
subbuf
,
base
,
len
);
if
(
status
)
goto
out
;
this_len
=
min_t
(
unsigned
int
,
len
,
subbuf
.
head
[
0
].
iov_len
);
memcpy
(
subbuf
.
head
[
0
].
iov_base
,
obj
,
this_len
);
if
(
status
!=
0
)
return
status
;
__read_bytes_from_xdr_buf
(
&
subbuf
,
obj
,
len
);
return
0
;
}
static
void
__write_bytes_to_xdr_buf
(
struct
xdr_buf
*
subbuf
,
void
*
obj
,
unsigned
int
len
)
{
unsigned
int
this_len
;
this_len
=
min_t
(
unsigned
int
,
len
,
subbuf
->
head
[
0
].
iov_len
);
memcpy
(
subbuf
->
head
[
0
].
iov_base
,
obj
,
this_len
);
len
-=
this_len
;
obj
+=
this_len
;
this_len
=
min_t
(
unsigned
int
,
len
,
subbuf
.
page_len
);
this_len
=
min_t
(
unsigned
int
,
len
,
subbuf
->
page_len
);
if
(
this_len
)
_copy_to_pages
(
subbuf
.
pages
,
subbuf
.
page_base
,
obj
,
this_len
);
_copy_to_pages
(
subbuf
->
pages
,
subbuf
->
page_base
,
obj
,
this_len
);
len
-=
this_len
;
obj
+=
this_len
;
this_len
=
min_t
(
unsigned
int
,
len
,
subbuf
.
tail
[
0
].
iov_len
);
memcpy
(
subbuf
.
tail
[
0
].
iov_base
,
obj
,
this_len
);
out:
this_len
=
min_t
(
unsigned
int
,
len
,
subbuf
->
tail
[
0
].
iov_len
);
memcpy
(
subbuf
->
tail
[
0
].
iov_base
,
obj
,
this_len
);
}
/* obj is assumed to point to allocated memory of size at least len: */
int
write_bytes_to_xdr_buf
(
struct
xdr_buf
*
buf
,
unsigned
int
base
,
void
*
obj
,
unsigned
int
len
)
{
struct
xdr_buf
subbuf
;
int
status
;
status
=
xdr_buf_subsegment
(
buf
,
&
subbuf
,
base
,
len
);
if
(
status
!=
0
)
return
status
;
__write_bytes_to_xdr_buf
(
&
subbuf
,
obj
,
len
);
return
0
;
}
int
...
...
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