Initial support for multiple UIs

Move the device discovery code from separate udev helpers to a single
process to listen on two sockets: one SOCK_DGRAM for incoming udev
events, and one SOCK_STREAM for UIs to connect.

Initial support for client/server infrastructure, still need to wire-up
the udev messages.

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

1 files changed, 24 insertions, 0 deletions

diff --git a/lib/list/list.c b/lib/list/list.c
new file mode 100644
index 0000000..d9bc532
--- /dev/null
+++ b/lib/list/list.c
@@ -0,0 +1,24 @@
+
+#include "list/list.h"
+
+void list_init(struct list *list)
+{
+	list->head.next = &list->head;
+	list->head.prev = &list->head;
+}
+
+void list_add(struct list *list, struct list_item *new)
+{
+	new->next = list->head.next;
+	new->prev = &list->head;
+
+	list->head.next->prev = new;
+	list->head.next = new;
+}
+
+void list_remove(struct list_item *item)
+{
+	item->next->prev = item->prev;
+	item->prev->next = item->next;
+}
+