From 0957f00796157564281ea6ff2cea7ef4f897775a Mon Sep 17 00:00:00 2001 From: Mark Fasheh Date: Tue, 18 Dec 2007 18:58:18 -0800 Subject: [PATCH] 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: Mark Fasheh --- fs/ocfs2/ioctl.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/fs/ocfs2/ioctl.c b/fs/ocfs2/ioctl.c index 7003d5820d79..5177fba5162b 100644 --- a/fs/ocfs2/ioctl.c +++ b/fs/ocfs2/ioctl.c @@ -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; -- 2.20.1