1 files changed, 66 insertions, 0 deletions
diff --git a/contrib/syslinux-4.02/com32/samples/resolv.c b/contrib/syslinux-4.02/com32/samples/resolv.c
new file mode 100644
index 0000000..bd49d9f
--- /dev/null
+++ b/contrib/syslinux-4.02/com32/samples/resolv.c
@@ -0,0 +1,66 @@
+/* ----------------------------------------------------------------------- *
+ *
+ *   Copyright 2004-2008 H. Peter Anvin - All Rights Reserved
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, Inc., 53 Temple Place Ste 330,
+ *   Boston MA 02111-1307, USA; either version 2 of the License, or
+ *   (at your option) any later version; incorporated herein by reference.
+ *
+ * ----------------------------------------------------------------------- */
+
+/*
+ * resolv.c
+ *
+ * Resolve an IP address
+ */
+
+#include <string.h>
+#include <stdio.h>
+#include <console.h>
+#include <stdlib.h>
+#include <com32.h>
+
+uint32_t resolv(const char *name)
+{
+    com32sys_t reg;
+
+    strcpy((char *)__com32.cs_bounce, name);
+
+    memset(&reg, 0, sizeof reg);
+    reg.eax.w[0] = 0x0010;
+    reg.ebx.w[0] = OFFS(__com32.cs_bounce);
+    reg.es = SEG(__com32.cs_bounce);
+
+    __intcall(0x22, &reg, &reg);
+
+    if (reg.eflags.l & EFLAGS_CF)
+	return 0;
+    else
+	return reg.eax.l;
+}
+
+int main(int argc, char *argv[])
+{
+    uint32_t ip;
+
+    openconsole(&dev_null_r, &dev_stdcon_w);
+
+    if (argc < 2) {
+	fputs("Usage: resolv hostname\n", stderr);
+	exit(1);
+    }
+
+    ip = resolv(argv[1]);
+
+    if (ip) {
+	printf("%s = %u.%u.%u.%u\n", argv[1],
+	       (ip & 0xff), (ip >> 8) & 0xff,
+	       (ip >> 16) & 0xff, (ip >> 24) & 0xff);
+    } else {
+	printf("%s not found\n", argv[1]);
+    }
+
+    return 0;
+}