[PATCH] namespaces: utsname: switch to using uts namespaces

Replace references to system_utsname to the per-process uts namespace
where appropriate.  This includes things like uname.

Changes: Per Eric Biederman's comments, use the per-process uts namespace
	for ELF_PLATFORM, sunrpc, and parts of net/ipv4/ipconfig.c

[jdike@addtoit.com: UML fix]
[clg@fr.ibm.com: cleanup]
[akpm@osdl.org: build fix]
Signed-off-by: Serge E. Hallyn <serue@us.ibm.com>
Cc: Kirill Korotaev <dev@openvz.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Herbert Poetzl <herbert@13thfloor.at>
Cc: Andrey Savochkin <saw@sw.ru>
Signed-off-by: Cedric Le Goater <clg@fr.ibm.com>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/char/random.c b/drivers/char/random.c
index b430a12..07f47a0 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -889,8 +889,8 @@
 
 	do_gettimeofday(&tv);
 	add_entropy_words(r, (__u32 *)&tv, sizeof(tv)/4);
-	add_entropy_words(r, (__u32 *)&system_utsname,
-			  sizeof(system_utsname)/4);
+	add_entropy_words(r, (__u32 *)utsname(),
+			  sizeof(*(utsname()))/4);
 }
 
 static int __init rand_initialize(void)