1 files changed, 61 insertions, 0 deletions
diff --git a/roms/ipxe/src/arch/i386/interface/syslinux/comboot_resolv.c b/roms/ipxe/src/arch/i386/interface/syslinux/comboot_resolv.c
new file mode 100644
index 00000000..03bbfd04
--- /dev/null
+++ b/roms/ipxe/src/arch/i386/interface/syslinux/comboot_resolv.c
@@ -0,0 +1,61 @@
+#include <errno.h>
+#include <comboot.h>
+#include <ipxe/in.h>
+#include <ipxe/list.h>
+#include <ipxe/process.h>
+#include <ipxe/resolv.h>
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+struct comboot_resolver {
+	struct interface intf;
+	int rc;
+	struct in_addr addr;
+};
+
+static void comboot_resolv_close ( struct comboot_resolver *comboot_resolver,
+				   int rc ) {
+	comboot_resolver->rc = rc;
+	intf_shutdown ( &comboot_resolver->intf, rc );
+}
+
+static void comboot_resolv_done ( struct comboot_resolver *comboot_resolver,
+				  struct sockaddr *sa ) {
+	struct sockaddr_in *sin;
+
+	if ( sa->sa_family == AF_INET ) {
+		sin = ( ( struct sockaddr_in * ) sa );
+		comboot_resolver->addr = sin->sin_addr;
+	}
+}
+
+static struct interface_operation comboot_resolv_op[] = {
+	INTF_OP ( intf_close, struct comboot_resolver *, comboot_resolv_close ),
+	INTF_OP ( resolv_done, struct comboot_resolver *, comboot_resolv_done ),
+};
+
+static struct interface_descriptor comboot_resolv_desc =
+	INTF_DESC ( struct comboot_resolver, intf, comboot_resolv_op );
+
+static struct comboot_resolver comboot_resolver = {
+	.intf = INTF_INIT ( comboot_resolv_desc ),
+};
+
+int comboot_resolv ( const char *name, struct in_addr *address ) {
+	int rc;
+
+	comboot_resolver.rc = -EINPROGRESS;
+	comboot_resolver.addr.s_addr = 0;
+
+	if ( ( rc = resolv ( &comboot_resolver.intf, name, NULL ) ) != 0 )
+		return rc;
+
+	while ( comboot_resolver.rc == -EINPROGRESS )
+		step();
+
+	if ( ! comboot_resolver.addr.s_addr )
+		return -EAFNOSUPPORT;
+
+	*address = comboot_resolver.addr;
+	return comboot_resolver.rc;
+}