mouse: fix deadlock

kernel-src/include/kernel/abi.h

@@ -137,6 +137,7 @@ typedef struct {
 #define SIOCGIFHWADDR 0x8927
 #define SIOCADDRT 0x890b
 #define SIOCSIFADDR	0x8916
+#define FIONREAD 0x541B
 
 typedef struct {
 	char name[IFNAMSIZ];

kernel-src/include/kernel/mouse.h

@@ -3,6 +3,7 @@
 
 #include <ringbuffer.h>
 #include <kernel/poll.h>
+#include <mutex.h>
 
 #define MOUSE_FLAG_RB 1
 #define MOUSE_FLAG_MB 2
@@ -20,6 +21,7 @@ typedef struct {
 	spinlock_t lock;
 	pollheader_t pollheader;
 	int flags;
+	mutex_t readmutex;
 } mouse_t;
 
 void mouse_init();

kernel-src/include/kernel/sock.h

@@ -36,6 +36,7 @@ typedef struct socketops_t {
 	int (*connect)(socket_t *socket, sockaddr_t *addr, uintmax_t data);
 	int (*listen)(socket_t *socket, int backlog);
 	int (*accept)(socket_t *server, socket_t *client, sockaddr_t *addr, uintmax_t flags);
+	size_t (*datacount)(socket_t *socket);
 	void (*destroy)(socket_t *socket);
 } socketops_t;
 

kernel-src/include/kernel/vfs.h

@@ -172,8 +172,8 @@ int vfs_unlink(vnode_t *ref, char *path);
 int vfs_pollstub(vnode_t *node, struct polldata *, int events);
 void vfs_inactive(vnode_t *node);
 
-#define VFS_LOOKUP_PARENT 1
-#define VFS_LOOKUP_NOLINK 2
+#define VFS_LOOKUP_PARENT 0x20000000
+#define VFS_LOOKUP_NOLINK 0x40000000
 #define VFS_LOOKUP_INTERNAL 0x80000000
 int vfs_lookup(vnode_t **result, vnode_t *start, char *path, char *lastcomp, int flags);