From 1ea0ce40690dff38935538e8dab7b12683ded0d3 Mon Sep 17 00:00:00 2001 From: Antonio Murdaca Date: Thu, 2 Feb 2017 16:22:57 +0100 Subject: [PATCH] selinux: allow changing labels for cgroupfs 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 Acked-by: Stephen Smalley Signed-off-by: Paul Moore --- security/selinux/hooks.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index a5398fea0966..76af95fa741a 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -480,6 +480,8 @@ 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") || + !strcmp(sb->s_type->name, "cgroup2") || !strcmp(sb->s_type->name, "pstore") || !strcmp(sb->s_type->name, "debugfs") || !strcmp(sb->s_type->name, "tracefs") ||