Kernel/LibC: Implement basic ioctl for network addresses

libc/CMakeLists.txt

@@ -17,6 +17,7 @@ set(LIBC_SOURCES
 	stdlib.cpp
 	string.cpp
 	strings.cpp
+	stropts.cpp
 	sys/banan-os.cpp
 	sys/mman.cpp
 	sys/socket.cpp

libc/include/net/if.h

@@ -5,6 +5,8 @@
 
 #include <sys/cdefs.h>
 
+#include <sys/socket.h>
+
 #define IF_NAMESIZE 16
 
 __BEGIN_DECLS
@@ -15,6 +17,22 @@ struct if_nameindex
 	char* if_name;		/* Null-terminated name of the interface. */
 };
 
+struct ifreq
+{
+	union {
+		struct sockaddr ifru_addr;
+		struct sockaddr ifru_netmask;
+		struct sockaddr ifru_hwaddr;
+		unsigned char __min_storage[sizeof(sockaddr) + 6];
+	} ifr_ifru;
+};
+
+#define SIOCGIFADDR		1	/* Get interface address */
+#define SIOCSIFADDR		2	/* Set interface address */
+#define SIOCGIFNETMASK	3	/* Get network mask */
+#define SIOCSIFNETMASK	4	/* Set network mask */
+#define SIOCGIFHWADDR	5	/* Get hardware address */
+
 void					if_freenameindex(struct if_nameindex* ptr);
 char*					if_indextoname(unsigned ifindex, char* ifname);
 struct if_nameindex*	if_nameindex(void);

libc/include/stropts.h

@@ -11,8 +11,8 @@ __BEGIN_DECLS
 #define __need_gid_t
 #include <sys/types.h>
 
-typedef uint32_t t_uscalar_t;
-typedef int32_t t_scalar_t;
+typedef __UINT32_TYPE__ t_uscalar_t;
+typedef __INT32_TYPE__ t_scalar_t;
 
 struct bandinfo
 {

libc/include/sys/syscall.h

@@ -67,6 +67,7 @@ __BEGIN_DECLS
 #define SYS_BIND 66
 #define SYS_SENDTO 67
 #define SYS_RECVFROM 68
+#define SYS_IOCTL 69
 
 __END_DECLS
 

libc/stropts.cpp

@@ -0,0 +1,14 @@
+#include <stdarg.h>
+#include <stropts.h>
+#include <sys/syscall.h>
+#include <unistd.h>
+
+int ioctl(int fildes, int request, ...)
+{
+	va_list args;
+	va_start(args, request);
+	void* extra = va_arg(args, void*);
+	va_end(args);
+
+	return syscall(SYS_IOCTL, fildes, request, extra);
+}