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体验新版 GitCode,发现更多精彩内容 >>
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857bc158
编写于
5月 07, 2011
作者:
A
Aneesh Kumar K.V
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
hw/9pfs: Update v9fs_open to use coroutines
Signed-off-by:
N
Aneesh Kumar K.V
<
aneesh.kumar@linux.vnet.ibm.com
>
上级
f6b7f0ab
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
43 addition
and
100 deletion
+43
-100
hw/9pfs/virtio-9p.c
hw/9pfs/virtio-9p.c
+43
-100
未找到文件。
hw/9pfs/virtio-9p.c
浏览文件 @
857bc158
...
...
@@ -92,11 +92,6 @@ static int v9fs_do_closedir(V9fsState *s, DIR *dir)
return
s
->
ops
->
closedir
(
&
s
->
ctx
,
dir
);
}
static
int
v9fs_do_open
(
V9fsState
*
s
,
V9fsString
*
path
,
int
flags
)
{
return
s
->
ops
->
open
(
&
s
->
ctx
,
path
->
data
,
flags
);
}
static
DIR
*
v9fs_do_opendir
(
V9fsState
*
s
,
V9fsString
*
path
)
{
return
s
->
ops
->
opendir
(
&
s
->
ctx
,
path
->
data
);
...
...
@@ -210,11 +205,6 @@ static int v9fs_do_fsync(V9fsState *s, int fd, int datasync)
return
s
->
ops
->
fsync
(
&
s
->
ctx
,
fd
,
datasync
);
}
static
int
v9fs_do_statfs
(
V9fsState
*
s
,
V9fsString
*
path
,
struct
statfs
*
stbuf
)
{
return
s
->
ops
->
statfs
(
&
s
->
ctx
,
path
->
data
,
stbuf
);
}
static
int
v9fs_do_lsetxattr
(
V9fsState
*
s
,
V9fsString
*
path
,
V9fsString
*
xattr_name
,
void
*
value
,
size_t
size
,
int
flags
)
...
...
@@ -1546,122 +1536,75 @@ static int32_t get_iounit(V9fsState *s, V9fsString *name)
* iounit should be multiples of f_bsize (host filesystem block size
* and as well as less than (client msize - P9_IOHDRSZ))
*/
if
(
!
v9fs_
d
o_statfs
(
s
,
name
,
&
stbuf
))
{
if
(
!
v9fs_
c
o_statfs
(
s
,
name
,
&
stbuf
))
{
iounit
=
stbuf
.
f_bsize
;
iounit
*=
(
s
->
msize
-
P9_IOHDRSZ
)
/
stbuf
.
f_bsize
;
}
if
(
!
iounit
)
{
iounit
=
s
->
msize
-
P9_IOHDRSZ
;
}
return
iounit
;
}
static
void
v9fs_open_post_opendir
(
V9fsState
*
s
,
V9fsOpenState
*
vs
,
int
err
)
{
if
(
vs
->
fidp
->
fs
.
dir
==
NULL
)
{
err
=
-
errno
;
goto
out
;
}
vs
->
fidp
->
fid_type
=
P9_FID_DIR
;
vs
->
offset
+=
pdu_marshal
(
vs
->
pdu
,
vs
->
offset
,
"Qd"
,
&
vs
->
qid
,
0
);
err
=
vs
->
offset
;
out:
complete_pdu
(
s
,
vs
->
pdu
,
err
);
g_free
(
vs
);
}
static
void
v9fs_open_post_getiounit
(
V9fsState
*
s
,
V9fsOpenState
*
vs
)
static
void
v9fs_open
(
void
*
opaque
)
{
int
err
;
vs
->
offset
+=
pdu_marshal
(
vs
->
pdu
,
vs
->
offset
,
"Qd"
,
&
vs
->
qid
,
vs
->
iounit
);
err
=
vs
->
offset
;
complete_pdu
(
s
,
vs
->
pdu
,
err
);
g_free
(
vs
);
}
int
flags
;
int
iounit
;
int32_t
fid
;
int32_t
mode
;
V9fsQID
qid
;
ssize_t
err
=
0
;
size_t
offset
=
7
;
struct
stat
stbuf
;
V9fsFidState
*
fidp
;
V9fsPDU
*
pdu
=
opaque
;
V9fsState
*
s
=
pdu
->
s
;
static
void
v9fs_open_post_open
(
V9fsState
*
s
,
V9fsOpenState
*
vs
,
int
err
)
{
if
(
vs
->
fidp
->
fs
.
fd
==
-
1
)
{
err
=
-
errno
;
if
(
s
->
proto_version
==
V9FS_PROTO_2000L
)
{
pdu_unmarshal
(
pdu
,
offset
,
"dd"
,
&
fid
,
&
mode
);
}
else
{
pdu_unmarshal
(
pdu
,
offset
,
"db"
,
&
fid
,
&
mode
);
}
fidp
=
lookup_fid
(
s
,
fid
);
if
(
fidp
==
NULL
)
{
err
=
-
ENOENT
;
goto
out
;
}
vs
->
fidp
->
fid_type
=
P9_FID_FILE
;
vs
->
iounit
=
get_iounit
(
s
,
&
vs
->
fidp
->
path
);
v9fs_open_post_getiounit
(
s
,
vs
);
return
;
out:
complete_pdu
(
s
,
vs
->
pdu
,
err
);
g_free
(
vs
);
}
static
void
v9fs_open_post_lstat
(
V9fsState
*
s
,
V9fsOpenState
*
vs
,
int
err
)
{
int
flags
;
BUG_ON
(
fidp
->
fid_type
!=
P9_FID_NONE
);
if
(
err
)
{
err
=
-
errno
;
err
=
v9fs_co_lstat
(
s
,
&
fidp
->
path
,
&
stbuf
);
if
(
err
<
0
)
{
goto
out
;
}
stat_to_qid
(
&
vs
->
stbuf
,
&
vs
->
qid
);
if
(
S_ISDIR
(
vs
->
stbuf
.
st_mode
))
{
vs
->
fidp
->
fs
.
dir
=
v9fs_do_opendir
(
s
,
&
vs
->
fidp
->
path
);
v9fs_open_post_opendir
(
s
,
vs
,
err
);
stat_to_qid
(
&
stbuf
,
&
qid
);
if
(
S_ISDIR
(
stbuf
.
st_mode
))
{
err
=
v9fs_co_opendir
(
s
,
fidp
);
if
(
err
<
0
)
{
goto
out
;
}
fidp
->
fid_type
=
P9_FID_DIR
;
offset
+=
pdu_marshal
(
pdu
,
offset
,
"Qd"
,
&
qid
,
0
);
err
=
offset
;
}
else
{
if
(
s
->
proto_version
==
V9FS_PROTO_2000L
)
{
flags
=
vs
->
mode
;
flags
=
mode
;
flags
&=
~
(
O_NOCTTY
|
O_ASYNC
|
O_CREAT
);
/* Ignore direct disk access hint until the server supports it. */
flags
&=
~
O_DIRECT
;
}
else
{
flags
=
omode_to_uflags
(
vs
->
mode
);
flags
=
omode_to_uflags
(
mode
);
}
vs
->
fidp
->
fs
.
fd
=
v9fs_do_open
(
s
,
&
vs
->
fidp
->
path
,
flags
);
v9fs_open_post_open
(
s
,
vs
,
err
);
}
return
;
out:
complete_pdu
(
s
,
vs
->
pdu
,
err
);
g_free
(
vs
);
}
static
void
v9fs_open
(
void
*
opaque
)
{
V9fsPDU
*
pdu
=
opaque
;
V9fsState
*
s
=
pdu
->
s
;
int32_t
fid
;
V9fsOpenState
*
vs
;
ssize_t
err
=
0
;
vs
=
g_malloc
(
sizeof
(
*
vs
));
vs
->
pdu
=
pdu
;
vs
->
offset
=
7
;
vs
->
mode
=
0
;
if
(
s
->
proto_version
==
V9FS_PROTO_2000L
)
{
pdu_unmarshal
(
vs
->
pdu
,
vs
->
offset
,
"dd"
,
&
fid
,
&
vs
->
mode
);
}
else
{
pdu_unmarshal
(
vs
->
pdu
,
vs
->
offset
,
"db"
,
&
fid
,
&
vs
->
mode
);
}
vs
->
fidp
=
lookup_fid
(
s
,
fid
);
if
(
vs
->
fidp
==
NULL
)
{
err
=
-
ENOENT
;
goto
out
;
err
=
v9fs_co_open
(
s
,
fidp
,
flags
);
if
(
err
<
0
)
{
goto
out
;
}
fidp
->
fid_type
=
P9_FID_FILE
;
iounit
=
get_iounit
(
s
,
&
fidp
->
path
);
offset
+=
pdu_marshal
(
pdu
,
offset
,
"Qd"
,
&
qid
,
iounit
);
err
=
offset
;
}
BUG_ON
(
vs
->
fidp
->
fid_type
!=
P9_FID_NONE
);
err
=
v9fs_do_lstat
(
s
,
&
vs
->
fidp
->
path
,
&
vs
->
stbuf
);
v9fs_open_post_lstat
(
s
,
vs
,
err
);
return
;
out:
complete_pdu
(
s
,
pdu
,
err
);
g_free
(
vs
);
}
static
void
v9fs_post_lcreate
(
V9fsState
*
s
,
V9fsLcreateState
*
vs
,
int
err
)
...
...
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