syscalls: chroot getpeername getsockname socketpair

kernel-src/sys/syscalls/getpeername.c

@@ -0,0 +1,42 @@
+#include <kernel/syscalls.h>
+#include <kernel/sock.h>
+
+syscallret_t syscall_getpeername(context_t *, int fd, void *uaddr, int *addrlen) {
+	syscallret_t ret = {
+		.ret = -1
+	};
+
+	file_t *file = fd_get(fd);
+	if (file == NULL) {
+		ret.errno = EBADF;
+		goto cleanup;
+	}
+
+	if (file->vnode->type != V_TYPE_SOCKET) {
+		ret.errno = ENOTSOCK;
+		goto cleanup;
+	}
+
+	sockaddr_t sockaddr;
+	socket_t *socket = SOCKFS_SOCKET_FROM_NODE(file->vnode);
+
+	ret.errno = socket->ops->getpeername(socket, &sockaddr);
+	if (ret.errno)
+		goto cleanup;
+
+	abisockaddr_t abisockaddr;
+
+	ret.errno = sock_addrtoabiaddr(socket->type, &sockaddr, &abisockaddr);
+	if (ret.errno)
+		goto cleanup;
+	
+	memcpy(uaddr, &abisockaddr, min(*addrlen, sizeof(abisockaddr_t)));
+	*addrlen = sizeof(abisockaddr_t);
+	ret.ret = 0;
+
+	cleanup:
+	if (file)
+		fd_release(file);
+
+	return ret;
+}