Fix using the resolver function from the API (with DS != CS); addsyslinux-3.00-pre8

test/sample file to do that; fix bug in chain.c.

2 files changed, 68 insertions, 1 deletions

diff --git a/com32/samples/Makefile b/com32/samples/Makefile
index 07d8156b..97985afa 100644
--- a/com32/samples/Makefile
+++ b/com32/samples/Makefile
@@ -39,7 +39,7 @@ LNXLIBS	   = ../libutil/libutil_lnx.a
 
 .SUFFIXES: .lss .c .o .elf .c32 .lnx
 
-all: 	hello.c32 cat.c32 \
+all: 	hello.c32 cat.c32 resolv.c32 \
 	fancyhello.c32 fancyhello.lnx \
 	keytest.c32 keytest.lnx \
 
diff --git a/com32/samples/resolv.c b/com32/samples/resolv.c
new file mode 100644
index 00000000..c82a974f
--- /dev/null
+++ b/com32/samples/resolv.c
@@ -0,0 +1,67 @@
+#ident "$Id$"
+/* ----------------------------------------------------------------------- *
+ *   
+ *   Copyright 2004 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;
+}