socket: SIOCSIFADDR ioctl

kernel-src/fs/sockfs.c

@@ -64,6 +64,21 @@ int sockfs_setattr(vnode_t *node, vattr_t *attr, cred_t *cred) {
 // arg can be in userspace
 int sockfs_ioctl(vnode_t *node, unsigned long request, void *arg, int *result) {
 	switch (request) {
+		case SIOCSIFADDR:
+		{
+			ifreq_t *ifreq = arg;
+			netdev_t *netdev = netdev_getdev(ifreq->name);
+			if(netdev) {
+				sockaddr_t sockaddr;
+				int e = sock_convertaddress(&sockaddr, &ifreq->addr);
+				if (e)
+					return e;
+				netdev->ip = sockaddr.ipv4addr.addr;
+			} else {
+				return ENODEV;
+			}
+			break;
+		}
 		case SIOCGIFHWADDR:
 		{
 			ifreq_t *ifreq = arg;

kernel-src/include/kernel/abi.h

@@ -130,6 +130,7 @@ typedef struct {
 #define IFNAMSIZ 16
 #define SIOCGIFHWADDR 0x8927
 #define SIOCADDRT 0x890b
+#define SIOCSIFADDR	0x8916
 
 typedef struct {
 	char name[IFNAMSIZ];

tools/netd/main.c

@@ -17,6 +17,9 @@
 #ifndef SIOCADDRT
 	#define SIOCADDRT	0x890B
 #endif
+#ifndef SIOCSIFADDR
+	#define SIOCSIFADDR	0x8916
+#endif
 
 #define DHCPHDR_TYPE_CLIENT 1
 #define DHCPHDR_TYPE_SERVER 2
@@ -406,6 +409,19 @@ static void addroute(char *device, uint32_t addr, uint32_t gateway, uint32_t mas
 		logstrerror("failed to add route");
 }
 
+static void setifip(char *device, uint32_t addr) {
+	// get hardware address of device
+	struct ifreq buffer = {0};
+	strcpy(buffer.ifr_name, device);
+
+	struct sockaddr_in *sockaddr = (struct sockaddr_in *)&buffer.ifr_addr;
+	sockaddr->sin_family = AF_INET;
+	sockaddr->sin_addr.s_addr = htonl(addr);
+
+	if (ioctl(sockfd, SIOCSIFADDR, &buffer))
+		logstrerror("failed to set device ip address");
+}
+
 int main(int argc, char *argv[]) {
 	name = argv[0];
 
@@ -469,6 +485,7 @@ int main(int argc, char *argv[]) {
 
 	addroute(argv[1], 0, offer.router, 0, 1);
 	addroute(argv[1], offer.clientip, 0, offer.netmask, 10);
+	setifip(argv[1], offer.clientip);
 
 	return EXIT_SUCCESS;
 }