Re: [PATCH 14/19] fs: Permit FIBMAP for users with CAP_SYS_RAWIO in s_user_ns

Serge E. Hallyn
2015-12-04T19:11:43Z

Quoting Seth Forshee (seth.forshee@canonical.com):
> Signed-off-by: Seth Forshee <seth.forshee@canonical.com>

Acked-by: Serge Hallyn <serge.hallyn@canonical.com>

> ---
> fs/ioctl.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/fs/ioctl.c b/fs/ioctl.c
> index 5d01d2638ca5..45c371bed7ee 100644
> --- a/fs/ioctl.c
> +++ b/fs/ioctl.c
> @@ -55,7 +55,7 @@ static int ioctl_fibmap(struct file *filp, int __user *p)
> /* do we support this mess? */
> if (!mapping->a_ops->bmap)
> return -EINVAL;
> - if (!capable(CAP_SYS_RAWIO))
> + if (!ns_capable(filp->f_inode->i_sb->s_user_ns, CAP_SYS_RAWIO))
> return -EPERM;
> res = get_user(block, p);
> if (res)
> --
> 1.9.1
>
> --
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