+
+int
+vfs_setxattr(struct dentry *dentry, char *name, void *value,
+ size_t size, int flags)
+{
+ struct inode *inode = dentry->d_inode;
+ int error;
+
+ mutex_lock(&inode->i_mutex);
+ error = security_inode_setxattr(dentry, name, value, size, flags);
+ if (error)
+ goto out;
+ error = -EOPNOTSUPP;
+ if (inode->i_op->setxattr) {
+ error = inode->i_op->setxattr(dentry, name, value, size, flags);
+ if (!error) {
+ fsnotify_xattr(dentry);
+ security_inode_post_setxattr(dentry, name, value,
+ size, flags);
+ }
+ } else if (!strncmp(name, XATTR_SECURITY_PREFIX,
+ sizeof XATTR_SECURITY_PREFIX - 1)) {
+ const char *suffix = name + sizeof XATTR_SECURITY_PREFIX - 1;
+ error = security_inode_setsecurity(inode, suffix, value,
+ size, flags);
+ if (!error)
+ fsnotify_xattr(dentry);
+ }
+out:
+ mutex_unlock(&inode->i_mutex);
+ return error;
+}
+EXPORT_SYMBOL_GPL(vfs_setxattr);
+
+ssize_t
+vfs_getxattr(struct dentry *dentry, char *name, void *value, size_t size)
+{
+ struct inode *inode = dentry->d_inode;
+ int error;
+
+ error = security_inode_getxattr(dentry, name);
+ if (error)
+ return error;
+
+ if (inode->i_op->getxattr)
+ error = inode->i_op->getxattr(dentry, name, value, size);
+ else
+ error = -EOPNOTSUPP;
+
+ if (!strncmp(name, XATTR_SECURITY_PREFIX,
+ sizeof XATTR_SECURITY_PREFIX - 1)) {
+ const char *suffix = name + sizeof XATTR_SECURITY_PREFIX - 1;
+ int ret = security_inode_getsecurity(inode, suffix, value,
+ size, error);
+ /*
+ * Only overwrite the return value if a security module
+ * is actually active.
+ */
+ if (ret != -EOPNOTSUPP)
+ error = ret;
+ }
+
+ return error;
+}
+EXPORT_SYMBOL_GPL(vfs_getxattr);
+
+int
+vfs_removexattr(struct dentry *dentry, char *name)
+{
+ struct inode *inode = dentry->d_inode;
+ int error;
+
+ if (!inode->i_op->removexattr)
+ return -EOPNOTSUPP;
+
+ error = security_inode_removexattr(dentry, name);
+ if (error)
+ return error;
+
+ mutex_lock(&inode->i_mutex);
+ error = inode->i_op->removexattr(dentry, name);
+ mutex_unlock(&inode->i_mutex);
+
+ if (!error)
+ fsnotify_xattr(dentry);
+ return error;
+}
+EXPORT_SYMBOL_GPL(vfs_removexattr);
+
+