72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
|
/*
|
||
|
|
* linux/fs/hfsplus/xattr_trusted.c
|
||
|
|
*
|
||
|
|
* Vyacheslav Dubeyko <slava@dubeyko.com>
|
||
|
|
*
|
||
|
|
* Handler for trusted extended attributes.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/nls.h>
|
||
|
|
|
||
|
|
#include "hfsplus_fs.h"
|
||
|
|
#include "xattr.h"
|
||
|
|
|
||
|
|
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;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int hfsplus_trusted_setxattr(struct dentry *dentry, const char *name,
|
||
|
|
const void *buffer, size_t size, int flags, 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_setxattr(dentry, xattr_name, buffer, size, flags);
|
||
|
|
kfree(xattr_name);
|
||
|
|
return res;
|
||
|
|
}
|
||
|
|
|
||
|
|
static size_t hfsplus_trusted_listxattr(struct dentry *dentry, char *list,
|
||
|
|
size_t list_size, const char *name, size_t name_len, int type)
|
||
|
|
{
|
||
|
|
/*
|
||
|
|
* This method is not used.
|
||
|
|
* It is used hfsplus_listxattr() instead of generic_listxattr().
|
||
|
|
*/
|
||
|
|
return -EOPNOTSUPP;
|
||
|
|
}
|
||
|
|
|
||
|
|
const struct xattr_handler hfsplus_xattr_trusted_handler = {
|
||
|
|
.prefix = XATTR_TRUSTED_PREFIX,
|
||
|
|
.list = hfsplus_trusted_listxattr,
|
||
|
|
.get = hfsplus_trusted_getxattr,
|
||
|
|
.set = hfsplus_trusted_setxattr,
|
||
|
|
};
|