Add system info messages

Add a little infrastructure for communicating information about the
system to the petitboot UIs. We just send some identifying info (type
and identifier), as well as the interfaces.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>

1 files changed, 64 insertions, 0 deletions

diff --git a/discover/sysinfo.c b/discover/sysinfo.c
new file mode 100644
index 0000000..19dac57
--- /dev/null
+++ b/discover/sysinfo.c
@@ -0,0 +1,64 @@
+
+#include <string.h>
+
+#include <talloc/talloc.h>
+
+#include "discover-server.h"
+#include "sysinfo.h"
+
+static struct system_info *sysinfo;
+static struct discover_server *server;
+
+const struct system_info *system_info_get(void)
+{
+	return sysinfo;
+}
+
+void system_info_register_interface(unsigned int hwaddr_size, uint8_t *hwaddr,
+		const char *name)
+{
+	struct interface_info *if_info;
+	unsigned int i;
+
+	for (i = 0; i < sysinfo->n_interfaces; i++) {
+		if_info = sysinfo->interfaces[i];
+
+		if (if_info->hwaddr_size != hwaddr_size)
+			continue;
+
+		if (memcmp(if_info->hwaddr, hwaddr, hwaddr_size))
+			continue;
+
+		/* update the name and we're done */
+		talloc_free(if_info->name);
+		if_info->name = talloc_strdup(if_info, name);
+		discover_server_notify_system_info(server, sysinfo);
+		return;
+	}
+
+	if_info = talloc_zero(sysinfo, struct interface_info);
+	if_info->hwaddr_size = hwaddr_size;
+	if_info->hwaddr = talloc_memdup(if_info, hwaddr, hwaddr_size);
+	if_info->name = talloc_strdup(if_info, name);
+
+	sysinfo->n_interfaces++;
+	sysinfo->interfaces = talloc_realloc(sysinfo, sysinfo->interfaces,
+						struct interface_info *,
+						sysinfo->n_interfaces);
+	sysinfo->interfaces[sysinfo->n_interfaces - 1] = if_info;
+
+	discover_server_notify_system_info(server, sysinfo);
+}
+
+static void system_info_set_identifier(struct system_info *info
+		__attribute__((unused)))
+{
+	/* todo: call helpers to set type & id */
+}
+
+void system_info_init(struct discover_server *s)
+{
+	sysinfo = talloc_zero(server, struct system_info);
+	server = s;
+	system_info_set_identifier(sysinfo);
+}