1 #include <linux/reiserfs_fs.h>
2 #include <linux/errno.h>
4 #include <linux/pagemap.h>
5 #include <linux/xattr.h>
6 #include <linux/reiserfs_xattr.h>
7 #include <linux/security.h>
8 #include <asm/uaccess.h>
11 security_get(struct dentry
*dentry
, const char *name
, void *buffer
, size_t size
,
14 if (strlen(name
) < sizeof(XATTR_SECURITY_PREFIX
))
17 if (IS_PRIVATE(dentry
->d_inode
))
20 return reiserfs_xattr_get(dentry
->d_inode
, name
, buffer
, size
);
24 security_set(struct dentry
*dentry
, const char *name
, const void *buffer
,
25 size_t size
, int flags
, int handler_flags
)
27 if (strlen(name
) < sizeof(XATTR_SECURITY_PREFIX
))
30 if (IS_PRIVATE(dentry
->d_inode
))
33 return reiserfs_xattr_set(dentry
->d_inode
, name
, buffer
, size
, flags
);
36 static size_t security_list(struct dentry
*dentry
, char *list
, size_t list_len
,
37 const char *name
, size_t namelen
, int handler_flags
)
39 const size_t len
= namelen
+ 1;
41 if (IS_PRIVATE(dentry
->d_inode
))
44 if (list
&& len
<= list_len
) {
45 memcpy(list
, name
, namelen
);
52 /* Initializes the security context for a new inode and returns the number
53 * of blocks needed for the transaction. If successful, reiserfs_security
54 * must be released using reiserfs_security_free when the caller is done. */
55 int reiserfs_security_init(struct inode
*dir
, struct inode
*inode
,
56 struct reiserfs_security_handle
*sec
)
63 /* Don't add selinux attributes on xattrs - they'll never get used */
67 error
= security_inode_init_security(inode
, dir
, &sec
->name
,
68 &sec
->value
, &sec
->length
);
70 if (error
== -EOPNOTSUPP
)
80 blocks
= reiserfs_xattr_jcreate_nblocks(inode
) +
81 reiserfs_xattr_nblocks(inode
, sec
->length
);
82 /* We don't want to count the directories twice if we have
84 REISERFS_I(inode
)->i_flags
|= i_has_xattr_dir
;
89 int reiserfs_security_write(struct reiserfs_transaction_handle
*th
,
91 struct reiserfs_security_handle
*sec
)
94 if (strlen(sec
->name
) < sizeof(XATTR_SECURITY_PREFIX
))
97 error
= reiserfs_xattr_set_handle(th
, inode
, sec
->name
, sec
->value
,
98 sec
->length
, XATTR_CREATE
);
99 if (error
== -ENODATA
|| error
== -EOPNOTSUPP
)
105 void reiserfs_security_free(struct reiserfs_security_handle
*sec
)
113 struct xattr_handler reiserfs_xattr_security_handler
= {
114 .prefix
= XATTR_SECURITY_PREFIX
,
117 .list
= security_list
,