From 9f0cf56683a0efcaa3cda67c534144d335f7ad2c Mon Sep 17 00:00:00 2001 From: Daniel De Graaf Date: Thu, 21 Mar 2013 16:11:22 -0400 Subject: mini-os/tpmback: add tpmback_get_peercontext This allows the XSM label of the TPM's client domain to be retrieved. Signed-off-by: Daniel De Graaf Acked-by: Samuel Thibault --- extras/mini-os/events.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'extras/mini-os/events.c') diff --git a/extras/mini-os/events.c b/extras/mini-os/events.c index 896c36565c..036b84b691 100644 --- a/extras/mini-os/events.c +++ b/extras/mini-os/events.c @@ -21,6 +21,7 @@ #include #include #include +#include #define NR_EVS 1024 @@ -258,6 +259,27 @@ int evtchn_bind_interdomain(domid_t pal, evtchn_port_t remote_port, return rc; } +int evtchn_get_peercontext(evtchn_port_t local_port, char *ctx, int size) +{ + int rc; + uint32_t sid; + struct xen_flask_op op; + op.cmd = FLASK_GET_PEER_SID; + op.interface_version = XEN_FLASK_INTERFACE_VERSION; + op.u.peersid.evtchn = local_port; + rc = _hypercall1(int, xsm_op, &op); + if (rc) + return rc; + sid = op.u.peersid.sid; + op.cmd = FLASK_SID_TO_CONTEXT; + op.u.sid_context.sid = sid; + op.u.sid_context.size = size; + set_xen_guest_handle(op.u.sid_context.context, ctx); + rc = _hypercall1(int, xsm_op, &op); + return rc; +} + + /* * Local variables: * mode: C -- cgit v1.2.3