2 #include <linux/errno.h>
4 #include <linux/pagemap.h>
5 #include <linux/xattr.h>
6 #include <linux/slab.h>
8 #include <linux/security.h>
9 #include <linux/uaccess.h>
12 security_get(const struct xattr_handler *handler, struct dentry *unused,
13 struct inode *inode, const char *name, void *buffer, size_t size)
15 if (IS_PRIVATE(inode))
18 return reiserfs_xattr_get(inode, xattr_full_name(handler, name),
23 security_set(const struct xattr_handler *handler, struct dentry *unused,
24 struct inode *inode, const char *name, const void *buffer,
25 size_t size, int flags)
27 if (IS_PRIVATE(inode))
30 return reiserfs_xattr_set(inode,
31 xattr_full_name(handler, name),
35 static bool security_list(struct dentry *dentry)
37 return !IS_PRIVATE(d_inode(dentry));
40 /* Initializes the security context for a new inode and returns the number
41 * of blocks needed for the transaction. If successful, reiserfs_security
42 * must be released using reiserfs_security_free when the caller is done. */
43 int reiserfs_security_init(struct inode *dir, struct inode *inode,
44 const struct qstr *qstr,
45 struct reiserfs_security_handle *sec)
52 /* Don't add selinux attributes on xattrs - they'll never get used */
56 error = security_old_inode_init_security(inode, dir, qstr, &sec->name,
57 &sec->value, &sec->length);
59 if (error == -EOPNOTSUPP)
68 if (sec->length && reiserfs_xattrs_initialized(inode->i_sb)) {
69 blocks = reiserfs_xattr_jcreate_nblocks(inode) +
70 reiserfs_xattr_nblocks(inode, sec->length);
71 /* We don't want to count the directories twice if we have
73 REISERFS_I(inode)->i_flags |= i_has_xattr_dir;
78 int reiserfs_security_write(struct reiserfs_transaction_handle *th,
80 struct reiserfs_security_handle *sec)
83 if (strlen(sec->name) < sizeof(XATTR_SECURITY_PREFIX))
86 error = reiserfs_xattr_set_handle(th, inode, sec->name, sec->value,
87 sec->length, XATTR_CREATE);
88 if (error == -ENODATA || error == -EOPNOTSUPP)
94 void reiserfs_security_free(struct reiserfs_security_handle *sec)
102 const struct xattr_handler reiserfs_xattr_security_handler = {
103 .prefix = XATTR_SECURITY_PREFIX,
106 .list = security_list,