wutsocket: implement missing functions

include/sys/ioccom.h

@@ -0,0 +1,40 @@
+#pragma once
+
+/*
+ * Ioctl's have the command encoded in the lower word, and the size of
+ * any in or out parameters in the upper word.  The high 3 bits of the
+ * upper word are used to encode the in/out status of the parameter.
+ */
+#define IOCPARM_SHIFT   13   /* number of bits for ioctl size */
+#define IOCPARM_MASK    ((1 << IOCPARM_SHIFT) - 1) /* parameter length mask */
+#define IOCPARM_LEN(x)  (((x) >> 16) & IOCPARM_MASK)
+#define IOCBASECMD(x)   ((x) & ~(IOCPARM_MASK << 16))
+#define IOCGROUP(x)     (((x) >> 8) & 0xff)
+
+#define IOCPARM_MAX     (1 << IOCPARM_SHIFT) /* max size of ioctl */
+#define IOC_VOID        0x20000000  /* no parameters */
+#define IOC_OUT         0x40000000  /* copy out parameters */
+#define IOC_IN          0x80000000  /* copy in parameters */
+#define IOC_INOUT       (IOC_IN|IOC_OUT)
+#define IOC_DIRMASK     (IOC_VOID|IOC_OUT|IOC_IN)
+
+#define _IOC(inout,group,num,len)   ((int) \
+    ((inout) | (((len) & IOCPARM_MASK) << 16) | ((group) << 8) | (num)))
+#define _IO(g,n)        _IOC(IOC_VOID,  (g), (n), 0)
+#define _IOWINT(g,n)    _IOC(IOC_VOID,  (g), (n), sizeof(int))
+#define _IOR(g,n,t)     _IOC(IOC_OUT,   (g), (n), sizeof(t))
+#define _IOW(g,n,t)     _IOC(IOC_IN,    (g), (n), sizeof(t))
+/* this should be _IORW, but stdio got there first */
+#define _IOWR(g,n,t)    _IOC(IOC_INOUT, (g), (n), sizeof(t))
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int ioctl(int fd,
+          int request,
+          ...);
+
+#ifdef __cplusplus
+}
+#endif