Quick and dirty fix of the DNS resolver bug. Now "ping localhost" works again! :))

The problem was that netdb.h defined a macro that always replaced h_errno with a function call so that libnet.so failed when res_query (and all other functions using h_errno, but this is where the bug occured for me) tried to assign a new value to h_errno which of course failed because it was actually assigned to the return value of _h_errnop().


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@5010 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kits/network/libnet/compat.c

@@ -13,6 +13,8 @@
 
 #include <TLS.h>
 
+#undef h_errno
+	// was defined by netdb.h
 static int32 h_errno_tls;
 
 /* These should probably be moved to a seperate file as they

src/kits/network/libnet/getaddrinfo.c

@@ -96,6 +96,9 @@
  */
 #include <stdarg.h>
 
+#undef h_errno
+	// was defined by netdb.h
+
 #ifdef YP
 #include <rpc/rpc.h>
 #include <rpcsvc/yp.h>

src/kits/network/libnet/getnameinfo.c

@@ -52,6 +52,9 @@
 #include <string.h>
 #include <stddef.h>
 
+#undef h_errno
+	// was defined by netdb.h
+
 static const struct afd {
 	int a_af;
 	int a_addrlen;

src/kits/network/libnet/getnetnamadr.c

@@ -83,6 +83,8 @@
 #include <errno.h>
 #include <string.h>
 
+#undef h_errno
+	// was defined by netdb.h
 extern int h_errno;
 
 struct netent *_getnetbyaddr (in_addr_t net, int type);

src/kits/network/libnet/res_debug.c

@@ -91,6 +91,9 @@
 #include <stdlib.h>
 #include <string.h>
 
+#undef h_errno
+	// was defined by netdb.h
+
 extern const char *_res_opcodes[];
 extern const char *_res_resultcodes[];
 

src/kits/network/libnet/res_mkquery.c

@@ -64,6 +64,9 @@
 #include <resolv.h>
 #include <string.h>
 
+#undef h_errno
+	// was defined by netdb.h
+
 /*
  * Form all types of queries.
  * Returns the size of the result or -1.

src/kits/network/libnet/res_query.c

@@ -75,7 +75,9 @@
 #endif
 
 const char *hostalias (const char *);
-int h_errno;
+#undef h_errno
+	// was defined by netdb.h
+int h_errno = 0;
 extern int res_opt (int, u_char *, int, int);
 
 /*