提交 a3cef4cd 编写于 作者: F Fabian Frederick 提交者: Linus Torvalds

fs/hfsplus: move xattr_name allocation in hfsplus_getxattr()

security/trusted/user/osx getxattr did the same
xattr_name initialization. Move that operation in hfsplus_getxattr().

Tested with security/trusted/user getfattr/setfattr
Signed-off-by: NFabian Frederick <fabf@skynet.be>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
上级 f01fa5fb
......@@ -560,6 +560,30 @@ ssize_t __hfsplus_getxattr(struct inode *inode, const char *name,
return res;
}
ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name,
void *value, size_t size,
const char *prefix, size_t prefixlen)
{
int res;
char *xattr_name;
if (!strcmp(name, ""))
return -EINVAL;
xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1,
GFP_KERNEL);
if (!xattr_name)
return -ENOMEM;
strcpy(xattr_name, prefix);
strcpy(xattr_name + prefixlen, name);
res = __hfsplus_getxattr(dentry->d_inode, xattr_name, value, size);
kfree(xattr_name);
return res;
}
static inline int can_list(const char *xattr_name)
{
if (!xattr_name)
......@@ -806,9 +830,6 @@ static int hfsplus_removexattr(struct inode *inode, const char *name)
static int hfsplus_osx_getxattr(struct dentry *dentry, const char *name,
void *buffer, size_t size, int type)
{
char *xattr_name;
int res;
if (!strcmp(name, ""))
return -EINVAL;
......@@ -818,16 +839,9 @@ static int hfsplus_osx_getxattr(struct dentry *dentry, const char *name,
*/
if (is_known_namespace(name))
return -EOPNOTSUPP;
xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN
+ XATTR_MAC_OSX_PREFIX_LEN + 1, GFP_KERNEL);
if (!xattr_name)
return -ENOMEM;
strcpy(xattr_name, XATTR_MAC_OSX_PREFIX);
strcpy(xattr_name + XATTR_MAC_OSX_PREFIX_LEN, name);
res = hfsplus_getxattr(dentry, xattr_name, buffer, size);
kfree(xattr_name);
return res;
return hfsplus_getxattr(dentry, name, buffer, size,
XATTR_MAC_OSX_PREFIX, XATTR_MAC_OSX_PREFIX_LEN);
}
static int hfsplus_osx_setxattr(struct dentry *dentry, const char *name,
......
......@@ -28,15 +28,11 @@ static inline int hfsplus_setxattr(struct dentry *dentry, const char *name,
}
ssize_t __hfsplus_getxattr(struct inode *inode, const char *name,
void *value, size_t size);
void *value, size_t size);
static inline ssize_t hfsplus_getxattr(struct dentry *dentry,
const char *name,
void *value,
size_t size)
{
return __hfsplus_getxattr(dentry->d_inode, name, value, size);
}
ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name,
void *value, size_t size,
const char *prefix, size_t prefixlen);
ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size);
......
......@@ -16,22 +16,9 @@
static int hfsplus_security_getxattr(struct dentry *dentry, const char *name,
void *buffer, size_t size, int type)
{
char *xattr_name;
int res;
if (!strcmp(name, ""))
return -EINVAL;
xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1,
GFP_KERNEL);
if (!xattr_name)
return -ENOMEM;
strcpy(xattr_name, XATTR_SECURITY_PREFIX);
strcpy(xattr_name + XATTR_SECURITY_PREFIX_LEN, name);
res = hfsplus_getxattr(dentry, xattr_name, buffer, size);
kfree(xattr_name);
return res;
return hfsplus_getxattr(dentry, name, buffer, size,
XATTR_SECURITY_PREFIX,
XATTR_SECURITY_PREFIX_LEN);
}
static int hfsplus_security_setxattr(struct dentry *dentry, const char *name,
......
......@@ -14,22 +14,9 @@
static int hfsplus_trusted_getxattr(struct dentry *dentry, const char *name,
void *buffer, size_t size, int type)
{
char *xattr_name;
int res;
if (!strcmp(name, ""))
return -EINVAL;
xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1,
GFP_KERNEL);
if (!xattr_name)
return -ENOMEM;
strcpy(xattr_name, XATTR_TRUSTED_PREFIX);
strcpy(xattr_name + XATTR_TRUSTED_PREFIX_LEN, name);
res = hfsplus_getxattr(dentry, xattr_name, buffer, size);
kfree(xattr_name);
return res;
return hfsplus_getxattr(dentry, name, buffer, size,
XATTR_TRUSTED_PREFIX,
XATTR_TRUSTED_PREFIX_LEN);
}
static int hfsplus_trusted_setxattr(struct dentry *dentry, const char *name,
......
......@@ -14,22 +14,9 @@
static int hfsplus_user_getxattr(struct dentry *dentry, const char *name,
void *buffer, size_t size, int type)
{
char *xattr_name;
int res;
if (!strcmp(name, ""))
return -EINVAL;
xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1,
GFP_KERNEL);
if (!xattr_name)
return -ENOMEM;
strcpy(xattr_name, XATTR_USER_PREFIX);
strcpy(xattr_name + XATTR_USER_PREFIX_LEN, name);
res = hfsplus_getxattr(dentry, xattr_name, buffer, size);
kfree(xattr_name);
return res;
return hfsplus_getxattr(dentry, name, buffer, size,
XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN);
}
static int hfsplus_user_setxattr(struct dentry *dentry, const char *name,
......
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