Commit 0957f007 authored by Mark Fasheh's avatar Mark Fasheh
Browse files

ocfs2: Add missing permission checks 



Check that an online resize is being driven by a user with permission to
change system resource limits.

Signed-off-by: default avatarMark Fasheh <mark.fasheh@oracle.com>
parent 7909f2bf

fs/ocfs2/ioctl.c

+6 −0
Original line number Diff line number Diff line
@@ -144,12 +144,18 @@ int ocfs2_ioctl(struct inode * inode, struct file * filp, 


		return ocfs2_change_file_space(filp, cmd, &sr);

	case OCFS2_IOC_GROUP_EXTEND:

		if (!capable(CAP_SYS_RESOURCE))

			return -EPERM;



		if (get_user(new_clusters, (int __user *)arg))

			return -EFAULT;



		return ocfs2_group_extend(inode, new_clusters);

	case OCFS2_IOC_GROUP_ADD:

	case OCFS2_IOC_GROUP_ADD64:

		if (!capable(CAP_SYS_RESOURCE))

			return -EPERM;



		if (copy_from_user(&input, (int __user *) arg, sizeof(input)))

			return -EFAULT;