C++ (Cpp) security_inode_listxattr Examples

Example #1

/*
 * Extended attribute LIST operations
 */
static ssize_t
listxattr(struct dentry *d, char __user *list, size_t size)
{
	ssize_t error;
	char *klist = NULL;

	if (size) {
		if (size > XATTR_LIST_MAX)
			size = XATTR_LIST_MAX;
		klist = kmalloc(size, GFP_KERNEL);
		if (!klist)
			return -ENOMEM;
	}

	error = -EOPNOTSUPP;
	if (d->d_inode->i_op && d->d_inode->i_op->listxattr) {
		error = security_inode_listxattr(d);
		if (error)
			goto out;
		error = d->d_inode->i_op->listxattr(d, klist, size);
		if (error > 0) {
			if (size && copy_to_user(list, klist, error))
				error = -EFAULT;
		} else if (error == -ERANGE && size >= XATTR_LIST_MAX) {
			/* The file system tried to returned a list bigger
			   than XATTR_LIST_MAX bytes. Not possible. */
			error = -E2BIG;
		}
	}
out:
	if (klist)
		kfree(klist);
	return error;
}

Example #2

File: xattr.c Project: khenam/ardrone-kernel

ssize_t
vfs_listxattr(struct dentry *d, char *list, size_t size)
{
	ssize_t error;

	error = security_inode_listxattr(d);
	if (error)
		return error;
	error = -EOPNOTSUPP;
	if (d->d_inode->i_op && d->d_inode->i_op->listxattr) {
		error = d->d_inode->i_op->listxattr(d, list, size);
	} else {
		error = security_inode_listsecurity(d->d_inode, list, size);
		if (size && error > size)
			error = -ERANGE;
	}
	return error;
}