[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>

2 files changed, 20 insertions, 20 deletions

diff --git a/arch/x86_64/ia32/sys_ia32.c b/arch/x86_64/ia32/sys_ia32.c
index f280d3665f4b..26a01717cc1a 100644
--- a/arch/x86_64/ia32/sys_ia32.c
+++ b/arch/x86_64/ia32/sys_ia32.c
@@ -784,36 +784,36 @@ asmlinkage long sys32_olduname(struct oldold_utsname __user * name)
 
         if (!name)
                 return -EFAULT;
-        if (!access_ok(VERIFY_WRITE,name,sizeof(struct oldold_utsname)))
+        if (!access_ok(VERIFY_WRITE, name, sizeof(struct oldold_utsname)))
                 return -EFAULT;
   
         down_read(&uts_sem);
-        
-        err = __copy_to_user(&name->sysname,&system_utsname.sysname,
+
+        err = __copy_to_user(&name->sysname,&utsname()->sysname,
                                 __OLD_UTS_LEN);
         err |= __put_user(0,name->sysname+__OLD_UTS_LEN);
-        err |= __copy_to_user(&name->nodename,&system_utsname.nodename,
+        err |= __copy_to_user(&name->nodename,&utsname()->nodename,
                                 __OLD_UTS_LEN);
         err |= __put_user(0,name->nodename+__OLD_UTS_LEN);
-        err |= __copy_to_user(&name->release,&system_utsname.release,
+        err |= __copy_to_user(&name->release,&utsname()->release,
                                 __OLD_UTS_LEN);
         err |= __put_user(0,name->release+__OLD_UTS_LEN);
-        err |= __copy_to_user(&name->version,&system_utsname.version,
+        err |= __copy_to_user(&name->version,&utsname()->version,
                                 __OLD_UTS_LEN);
         err |= __put_user(0,name->version+__OLD_UTS_LEN);
-         { 
-                 char *arch = "x86_64";
-                 if (personality(current->personality) == PER_LINUX32)
-                         arch = "i686";
+        {
+                char *arch = "x86_64";
+                if (personality(current->personality) == PER_LINUX32)
+                        arch = "i686";
                  
-                 err |= __copy_to_user(&name->machine,arch,strlen(arch)+1);
-         }
-        
-         up_read(&uts_sem);
-         
-         err = err ? -EFAULT : 0;
-         
-         return err;
+                err |= __copy_to_user(&name->machine, arch, strlen(arch)+1);
+        }
+
+        up_read(&uts_sem);
+
+        err = err ? -EFAULT : 0;
+
+        return err;
 }
 
 long sys32_uname(struct old_utsname __user * name)
@@ -822,7 +822,7 @@ long sys32_uname(struct old_utsname __user * name)
         if (!name)
                 return -EFAULT;
         down_read(&uts_sem);
-        err=copy_to_user(name, &system_utsname, sizeof (*name));
+        err = copy_to_user(name, utsname(), sizeof (*name));
         up_read(&uts_sem);
         if (personality(current->personality) == PER_LINUX32) 
                 err |= copy_to_user(&name->machine, "i686", 5);
diff --git a/arch/x86_64/kernel/sys_x86_64.c b/arch/x86_64/kernel/sys_x86_64.c
index 6449ea8fe756..76bf7c241fe4 100644
--- a/arch/x86_64/kernel/sys_x86_64.c
+++ b/arch/x86_64/kernel/sys_x86_64.c
@@ -148,7 +148,7 @@ asmlinkage long sys_uname(struct new_utsname __user * name)
 {
         int err;
         down_read(&uts_sem);
-        err = copy_to_user(name, &system_utsname, sizeof (*name));
+        err = copy_to_user(name, utsname(), sizeof (*name));
         up_read(&uts_sem);
         if (personality(current->personality) == PER_LINUX32) 
                 err |= copy_to_user(&name->machine, "i686", 5);