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74eb8cc5
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74eb8cc5
编写于
2月 23, 2015
作者:
A
Al Viro
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
namei.c: fold do_path_lookup() into both callers
Signed-off-by:
N
Al Viro
<
viro@zeniv.linux.org.uk
>
上级
fd2f7cb5
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
24 addition
and
24 deletion
+24
-24
fs/namei.c
fs/namei.c
+24
-24
未找到文件。
fs/namei.c
浏览文件 @
74eb8cc5
...
...
@@ -2038,19 +2038,6 @@ static int filename_lookup(int dfd, struct filename *name,
return
retval
;
}
static
int
do_path_lookup
(
int
dfd
,
const
char
*
name
,
unsigned
int
flags
,
struct
nameidata
*
nd
)
{
struct
filename
*
filename
=
getname_kernel
(
name
);
int
retval
=
PTR_ERR
(
filename
);
if
(
!
IS_ERR
(
filename
))
{
retval
=
filename_lookup
(
dfd
,
filename
,
flags
,
nd
);
putname
(
filename
);
}
return
retval
;
}
/* does lookup, returns the object with parent locked */
struct
dentry
*
kern_path_locked
(
const
char
*
name
,
struct
path
*
path
)
{
...
...
@@ -2088,9 +2075,15 @@ struct dentry *kern_path_locked(const char *name, struct path *path)
int
kern_path
(
const
char
*
name
,
unsigned
int
flags
,
struct
path
*
path
)
{
struct
nameidata
nd
;
int
res
=
do_path_lookup
(
AT_FDCWD
,
name
,
flags
,
&
nd
);
if
(
!
res
)
*
path
=
nd
.
path
;
struct
filename
*
filename
=
getname_kernel
(
name
);
int
res
=
PTR_ERR
(
filename
);
if
(
!
IS_ERR
(
filename
))
{
res
=
filename_lookup
(
AT_FDCWD
,
filename
,
flags
,
&
nd
);
putname
(
filename
);
if
(
!
res
)
*
path
=
nd
.
path
;
}
return
res
;
}
EXPORT_SYMBOL
(
kern_path
);
...
...
@@ -2107,15 +2100,22 @@ int vfs_path_lookup(struct dentry *dentry, struct vfsmount *mnt,
const
char
*
name
,
unsigned
int
flags
,
struct
path
*
path
)
{
struct
nameidata
nd
;
int
err
;
nd
.
root
.
dentry
=
dentry
;
nd
.
root
.
mnt
=
mnt
;
struct
filename
*
filename
=
getname_kernel
(
name
);
int
err
=
PTR_ERR
(
filename
);
BUG_ON
(
flags
&
LOOKUP_PARENT
);
/* the first argument of do_path_lookup() is ignored with LOOKUP_ROOT */
err
=
do_path_lookup
(
AT_FDCWD
,
name
,
flags
|
LOOKUP_ROOT
,
&
nd
);
if
(
!
err
)
*
path
=
nd
.
path
;
/* the first argument of filename_lookup() is ignored with LOOKUP_ROOT */
if
(
!
IS_ERR
(
filename
))
{
struct
nameidata
nd
;
nd
.
root
.
dentry
=
dentry
;
nd
.
root
.
mnt
=
mnt
;
err
=
filename_lookup
(
AT_FDCWD
,
filename
,
flags
|
LOOKUP_ROOT
,
&
nd
);
if
(
!
err
)
*
path
=
nd
.
path
;
putname
(
filename
);
}
return
err
;
}
EXPORT_SYMBOL
(
vfs_path_lookup
);
...
...
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