diff options
| author | Eric Paris <eparis@redhat.com> | 2013-05-24 09:39:29 -0400 |
|---|---|---|
| committer | Eric Paris <eparis@redhat.com> | 2013-11-05 11:08:01 -0500 |
| commit | 83fa6bbe4c4541ae748b550b4ec391f8a0acfe94 (patch) | |
| tree | da0b4c3432448ac961c5372a94ad38512660314f | |
| parent | da0a610497ce193782c8df4a33fee7fce030cb99 (diff) | |
audit: remove CONFIG_AUDIT_LOGINUID_IMMUTABLE
After trying to use this feature in Fedora we found the hard coding
policy like this into the kernel was a bad idea. Surprise surprise.
We ran into these problems because it was impossible to launch a
container as a logged in user and run a login daemon inside that container.
This reverts back to the old behavior before this option was added. The
option will be re-added in a userspace selectable manor such that
userspace can choose when it is and when it is not appropriate.
Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
| -rw-r--r-- | init/Kconfig | 14 | ||||
| -rw-r--r-- | kernel/auditsc.c | 10 |
2 files changed, 4 insertions, 20 deletions
diff --git a/init/Kconfig b/init/Kconfig index fed81b576f2..18a98c893d0 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -301,20 +301,6 @@ config AUDIT_TREE depends on AUDITSYSCALL select FSNOTIFY -config AUDIT_LOGINUID_IMMUTABLE - bool "Make audit loginuid immutable" - depends on AUDIT - help - The config option toggles if a task setting its loginuid requires - CAP_SYS_AUDITCONTROL or if that task should require no special permissions - but should instead only allow setting its loginuid if it was never - previously set. On systems which use systemd or a similar central - process to restart login services this should be set to true. On older - systems in which an admin would typically have to directly stop and - start processes this should be set to false. Setting this to true allows - one to drop potentially dangerous capabilites from the login tasks, - but may not be backwards compatible with older init systems. - source "kernel/irq/Kconfig" source "kernel/time/Kconfig" diff --git a/kernel/auditsc.c b/kernel/auditsc.c index 72684679e8b..b55788bf160 100644 --- a/kernel/auditsc.c +++ b/kernel/auditsc.c @@ -1968,15 +1968,13 @@ static atomic_t session_id = ATOMIC_INIT(0); static int audit_set_loginuid_perm(kuid_t loginuid) { -#ifdef CONFIG_AUDIT_LOGINUID_IMMUTABLE /* if we are unset, we don't need privs */ if (!audit_loginuid_set(current)) return 0; -#else /* CONFIG_AUDIT_LOGINUID_IMMUTABLE */ - if (capable(CAP_AUDIT_CONTROL)) - return 0; -#endif /* CONFIG_AUDIT_LOGINUID_IMMUTABLE */ - return -EPERM; + /* it is set, you need permission */ + if (!capable(CAP_AUDIT_CONTROL)) + return -EPERM; + return 0; } static void audit_log_set_loginuid(kuid_t koldloginuid, kuid_t kloginuid, |