Exemplos de xfs_attr_list em C++ (Cpp)

Exemplo n.º 1

Arquivo: xfs_ioctl.c Projeto: asmalldev/linux

STATIC int
xfs_attrlist_by_handle(
	struct file		*parfilp,
	void			__user *arg)
{
	int			error = -ENOMEM;
	attrlist_cursor_kern_t	*cursor;
	struct xfs_fsop_attrlist_handlereq __user	*p = arg;
	xfs_fsop_attrlist_handlereq_t al_hreq;
	struct dentry		*dentry;
	char			*kbuf;

	if (!capable(CAP_SYS_ADMIN))
		return -EPERM;
	if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t)))
		return -EFAULT;
	if (al_hreq.buflen < sizeof(struct attrlist) ||
	    al_hreq.buflen > XFS_XATTR_LIST_MAX)
		return -EINVAL;

	/*
	 * Reject flags, only allow namespaces.
	 */
	if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
		return -EINVAL;

	dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq);
	if (IS_ERR(dentry))
		return PTR_ERR(dentry);

	kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP);
	if (!kbuf)
		goto out_dput;

	cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
	error = xfs_attr_list(XFS_I(d_inode(dentry)), kbuf, al_hreq.buflen,
					al_hreq.flags, cursor);
	if (error)
		goto out_kfree;

	if (copy_to_user(&p->pos, cursor, sizeof(attrlist_cursor_kern_t))) {
		error = -EFAULT;
		goto out_kfree;
	}

	if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen))
		error = -EFAULT;

out_kfree:
	kmem_free(kbuf);
out_dput:
	dput(dentry);
	return error;
}

Exemplo n.º 2

Arquivo: xfs_ioctl.c Projeto: AICP/kernel_moto_shamu

STATIC int
xfs_attrlist_by_handle(
	struct file		*parfilp,
	void			__user *arg)
{
	int			error = -ENOMEM;
	attrlist_cursor_kern_t	*cursor;
	xfs_fsop_attrlist_handlereq_t al_hreq;
	struct dentry		*dentry;
	char			*kbuf;

	if (!capable(CAP_SYS_ADMIN))
		return -XFS_ERROR(EPERM);
	if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t)))
		return -XFS_ERROR(EFAULT);
	if (al_hreq.buflen < sizeof(struct attrlist) ||
	    al_hreq.buflen > XATTR_LIST_MAX)
		return -XFS_ERROR(EINVAL);

	/*
	 * Reject flags, only allow namespaces.
	 */
	if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
		return -XFS_ERROR(EINVAL);

	dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq);
	if (IS_ERR(dentry))
		return PTR_ERR(dentry);

	kbuf = kmem_zalloc(al_hreq.buflen, KM_SLEEP | KM_MAYFAIL);
	if (!kbuf) {
		kbuf = kmem_zalloc_large(al_hreq.buflen);
		if (!kbuf)
			goto out_dput;
	}

	cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
	error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen,
					al_hreq.flags, cursor);
	if (error)
		goto out_kfree;

	if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen))
		error = -EFAULT;

 out_kfree:
	if (is_vmalloc_addr(kbuf))
		kmem_free_large(kbuf);
	else
		kmem_free(kbuf);
 out_dput:
	dput(dentry);
	return error;
}

Exemplo n.º 3

Arquivo: xfs_ioctl.c Projeto: Mr-Aloof/wl500g

STATIC int
xfs_attrlist_by_handle(
	xfs_mount_t		*mp,
	void			__user *arg,
	struct inode		*parinode)
{
	int			error;
	attrlist_cursor_kern_t	*cursor;
	xfs_fsop_attrlist_handlereq_t al_hreq;
	struct inode		*inode;
	char			*kbuf;

	if (!capable(CAP_SYS_ADMIN))
		return -XFS_ERROR(EPERM);
	if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t)))
		return -XFS_ERROR(EFAULT);
	if (al_hreq.buflen > XATTR_LIST_MAX)
		return -XFS_ERROR(EINVAL);

	/*
	 * Reject flags, only allow namespaces.
	 */
	if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
		return -XFS_ERROR(EINVAL);

	error = xfs_vget_fsop_handlereq(mp, parinode, &al_hreq.hreq, &inode);
	if (error)
		goto out;

	kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL);
	if (!kbuf)
		goto out_vn_rele;

	cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
	error = xfs_attr_list(XFS_I(inode), kbuf, al_hreq.buflen,
					al_hreq.flags, cursor);
	if (error)
		goto out_kfree;

	if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen))
		error = -EFAULT;

 out_kfree:
	kfree(kbuf);
 out_vn_rele:
	iput(inode);
 out:
	return -error;
}