On Thu, Feb 2, 2017 at 4:01 PM, Gary Tierney <gary.tierney@xxxxxxx> wrote:
On Thu, Feb 02, 2017 at 03:42:28PM +0100, Antonio Murdaca wrote:
> This patch allows changing labels for cgroup mounts. Previously, running
> chcon on cgroupfs would throw an "Operation not supported". This patch
> specifically whitelist cgroupfs.
>
> The patch could also allow containers to write only to the systemd cgroup
> for instance, while the other cgroups are kept with cgroup_t label.
>
> Signed-off-by: Antonio Murdaca <runcom@xxxxxxxxxx>
> ---
> security/selinux/hooks.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
> index 3b955c6..4e84211 100644
> --- a/security/selinux/hooks.c
> +++ b/security/selinux/hooks.c
> @@ -480,6 +480,7 @@ static int selinux_is_sblabel_mnt(struct super_block *sb)
> sbsec->behavior == SECURITY_FS_USE_NATIVE ||
> /* Special handling. Genfs but also in-core setxattr handler */
> !strcmp(sb->s_type->name, "sysfs") ||
> + !strcmp(sb->s_type->name, "cgroup") ||
Should we also include "cgroup2" here, since they are defined as 2
distinct filesystems? https://github.com/SELinuxProject/selinux-kernel/ blob/master/kernel/cgroup.c# L2314-L2326
likely yes
> !strcmp(sb->s_type->name, "pstore") ||
> !strcmp(sb->s_type->name, "debugfs") ||
> !strcmp(sb->s_type->name, "tracefs") ||
> --
> 2.9.3
>
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Antonio (runcom) Murdaca, RHCE
Senior Software Engineer - Containers
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