From: Serge Hallyn <serge.hallyn-GeWIH/nMZzLQT0dZR+AlfA@public.gmane.org>
To: Chen Hanxiao <chenhanxiao-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>
Cc: Fabian Frederick <fabf-AgBVmzD5pcezQB+pC5nmwQ@public.gmane.org>,
containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
Oleg Nesterov <oleg-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
"Eric W. Biederman"
<ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
Subject: Re: [RESEND][PATCH] userns: use marco instead of magic number for max userns level
Date: Thu, 11 Sep 2014 16:30:48 +0000 [thread overview]
Message-ID: <20140911163048.GF24386@ubuntumail> (raw)
In-Reply-To: <1410429091-7234-1-git-send-email-chenhanxiao-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>
Quoting Chen Hanxiao (chenhanxiao-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org):
> Use marco instead of magic number
> for max user namespace level.
>
> Signed-off-by: Chen Hanxiao <chenhanxiao-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>
Acked-by: Serge E. Hallyn <serge.hallyn-GeWIH/nMZzLQT0dZR+AlfA@public.gmane.org>
> ---
> kernel/user_namespace.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c
> index aa312b0..5435489 100644
> --- a/kernel/user_namespace.c
> +++ b/kernel/user_namespace.c
> @@ -47,6 +47,8 @@ static void set_cred_user_ns(struct cred *cred, struct user_namespace *user_ns)
> cred->user_ns = user_ns;
> }
>
> +#define MAX_USER_NS_LEVEL 32
> +
> /*
> * Create a new user namespace, deriving the creator from the user in the
> * passed credentials, and replacing that user with the new root user for the
> @@ -62,7 +64,7 @@ int create_user_ns(struct cred *new)
> kgid_t group = new->egid;
> int ret;
>
> - if (parent_ns->level > 32)
> + if (parent_ns->level > MAX_USER_NS_LEVEL)
> return -EUSERS;
>
> /*
> --
> 1.9.0
>
> _______________________________________________
> Containers mailing list
> Containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org
> https://lists.linuxfoundation.org/mailman/listinfo/containers
next prev parent reply other threads:[~2014-09-11 16:30 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-11 9:51 [RESEND][PATCH] userns: use marco instead of magic number for max userns level Chen Hanxiao
[not found] ` <1410429091-7234-1-git-send-email-chenhanxiao-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>
2014-09-11 16:30 ` Serge Hallyn [this message]
2014-09-11 18:17 ` Aristeu Rozanski
[not found] ` <20140911181741.GU22290-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2014-09-12 1:54 ` Chen, Hanxiao
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