xnu-4903.241.1.tar.gz

[apple/xnu.git] / osfmk / ipc / mach_debug.c

diff --git a/osfmk/ipc/mach_debug.c b/osfmk/ipc/mach_debug.c
index 972073a71e512a528ed6888a8b4a7f6b47fbc755..a7b47831b579c8aa11faaca31e9e618674cfaf42 100644 (file)
--- a/osfmk/ipc/mach_debug.c
+++ b/osfmk/ipc/mach_debug.c
@@ -545,3 +545,51 @@ mach_port_kernel_object(
        return kr;
 }
 #endif /* MACH_IPC_DEBUG */
+
+#if (DEVELOPMENT || DEBUG)
+kern_return_t
+mach_port_special_reply_port_reset_link(
+       ipc_space_t             space,
+       mach_port_name_t        name,
+       boolean_t               *srp_lost_link)
+{
+       ipc_port_t port;
+       kern_return_t kr;
+       thread_t thread = current_thread();
+
+       if (space != current_space())
+               return KERN_INVALID_TASK;
+
+       if (!MACH_PORT_VALID(name))
+               return KERN_INVALID_NAME;
+
+       if (!IP_VALID(thread->ith_special_reply_port))
+               return KERN_INVALID_VALUE;
+
+       kr = ipc_port_translate_receive(space, name, &port);
+       if (kr != KERN_SUCCESS)
+               return kr;
+
+       if (thread->ith_special_reply_port != port) {
+               ip_unlock(port);
+               return KERN_INVALID_ARGUMENT;
+       }
+
+       imq_lock(&port->ip_messages);
+       *srp_lost_link = (port->ip_srp_lost_link == 1)? TRUE : FALSE;
+       port->ip_srp_lost_link = 0;
+       imq_unlock(&port->ip_messages);
+
+       ip_unlock(port);
+       return KERN_SUCCESS;
+}
+#else
+kern_return_t
+mach_port_special_reply_port_reset_link(
+       __unused ipc_space_t            space,
+       __unused mach_port_name_t       name,
+       __unused boolean_t              *srp_lost_link)
+{
+       return KERN_NOT_SUPPORTED;
+}
+#endif