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authorEric W. Biederman <ebiederm@xmission.com>2012-02-07 16:53:48 -0800
committerEric W. Biederman <ebiederm@xmission.com>2012-09-18 01:00:26 -0700
commitcca080d9b622094831672a136e5ee4f702d116b1 (patch)
tree7a8238c1c0a0d4de682e0ebb97dc06ab3a18fdb5 /kernel/audit.c
parente1760bd5ffae8cb98cffb030ee8e631eba28f3d8 (diff)
downloadlinaro-lsk-cca080d9b622094831672a136e5ee4f702d116b1.tar.gz
userns: Convert audit to work with user namespaces enabled
- Explicitly format uids gids in audit messges in the initial user namespace. This is safe because auditd is restrected to be in the initial user namespace. - Convert audit_sig_uid into a kuid_t. - Enable building the audit code and user namespaces at the same time. The net result is that the audit subsystem now uses kuid_t and kgid_t whenever possible making it almost impossible to confuse a raw uid_t with a kuid_t preventing bugs. Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Eric Paris <eparis@redhat.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Diffstat (limited to 'kernel/audit.c')
-rw-r--r--kernel/audit.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/audit.c b/kernel/audit.c
index 44a4b13c9f0..511488a7bc7 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -105,7 +105,7 @@ static int audit_backlog_wait_time = 60 * HZ;
static int audit_backlog_wait_overflow = 0;
/* The identity of the user shutting down the audit system. */
-uid_t audit_sig_uid = -1;
+kuid_t audit_sig_uid = INVALID_UID;
pid_t audit_sig_pid = -1;
u32 audit_sig_sid = 0;
@@ -853,7 +853,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
security_release_secctx(ctx, len);
return -ENOMEM;
}
- sig_data->uid = audit_sig_uid;
+ sig_data->uid = from_kuid(&init_user_ns, audit_sig_uid);
sig_data->pid = audit_sig_pid;
if (audit_sig_sid) {
memcpy(sig_data->ctx, ctx, len);