[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>

22 files changed, 142 insertions, 122 deletions

diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
index 73c7622b5297..8a31fc1bfb15 100644
--- a/arch/alpha/kernel/osf_sys.c
+++ b/arch/alpha/kernel/osf_sys.c
@@ -402,15 +402,15 @@ osf_utsname(char __user *name)
 
         down_read(&uts_sem);
         error = -EFAULT;
-        if (copy_to_user(name + 0, system_utsname.sysname, 32))
+        if (copy_to_user(name + 0, utsname()->sysname, 32))
                 goto out;
-        if (copy_to_user(name + 32, system_utsname.nodename, 32))
+        if (copy_to_user(name + 32, utsname()->nodename, 32))
                 goto out;
-        if (copy_to_user(name + 64, system_utsname.release, 32))
+        if (copy_to_user(name + 64, utsname()->release, 32))
                 goto out;
-        if (copy_to_user(name + 96, system_utsname.version, 32))
+        if (copy_to_user(name + 96, utsname()->version, 32))
                 goto out;
-        if (copy_to_user(name + 128, system_utsname.machine, 32))
+        if (copy_to_user(name + 128, utsname()->machine, 32))
                 goto out;
 
         error = 0;
@@ -449,8 +449,8 @@ osf_getdomainname(char __user *name, int namelen)
 
         down_read(&uts_sem);
         for (i = 0; i < len; ++i) {
-                __put_user(system_utsname.domainname[i], name + i);
-                if (system_utsname.domainname[i] == '\0')
+                __put_user(utsname()->domainname[i], name + i);
+                if (utsname()->domainname[i] == '\0')
                         break;
         }
         up_read(&uts_sem);
@@ -607,12 +607,12 @@ osf_sigstack(struct sigstack __user *uss, struct sigstack __user *uoss)
 asmlinkage long
 osf_sysinfo(int command, char __user *buf, long count)
 {
-        static char * sysinfo_table[] = {
-                system_utsname.sysname,
-                system_utsname.nodename,
-                system_utsname.release,
-                system_utsname.version,
-                system_utsname.machine,
+        char *sysinfo_table[] = {
+                utsname()->sysname,
+                utsname()->nodename,
+                utsname()->release,
+                utsname()->version,
+                utsname()->machine,
                 "alpha",        /* instruction set architecture */
                 "dummy",        /* hardware serial number */
                 "dummy",        /* hardware manufacturer */
diff --git a/arch/i386/kernel/sys_i386.c b/arch/i386/kernel/sys_i386.c
index 8fdb1fb17a5f..dc6e3bbeba31 100644
--- a/arch/i386/kernel/sys_i386.c
+++ b/arch/i386/kernel/sys_i386.c
@@ -210,7 +210,7 @@ asmlinkage int sys_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);
         return err?-EFAULT:0;
 }
@@ -226,16 +226,21 @@ asmlinkage int sys_olduname(struct oldold_utsname __user * name)
   
         down_read(&uts_sem);
         
-        error = __copy_to_user(&name->sysname,&system_utsname.sysname,__OLD_UTS_LEN);
-        error |= __put_user(0,name->sysname+__OLD_UTS_LEN);
-        error |= __copy_to_user(&name->nodename,&system_utsname.nodename,__OLD_UTS_LEN);
-        error |= __put_user(0,name->nodename+__OLD_UTS_LEN);
-        error |= __copy_to_user(&name->release,&system_utsname.release,__OLD_UTS_LEN);
-        error |= __put_user(0,name->release+__OLD_UTS_LEN);
-        error |= __copy_to_user(&name->version,&system_utsname.version,__OLD_UTS_LEN);
-        error |= __put_user(0,name->version+__OLD_UTS_LEN);
-        error |= __copy_to_user(&name->machine,&system_utsname.machine,__OLD_UTS_LEN);
-        error |= __put_user(0,name->machine+__OLD_UTS_LEN);
+        error = __copy_to_user(&name->sysname, &utsname()->sysname,
+                               __OLD_UTS_LEN);
+        error |= __put_user(0, name->sysname + __OLD_UTS_LEN);
+        error |= __copy_to_user(&name->nodename, &utsname()->nodename,
+                                __OLD_UTS_LEN);
+        error |= __put_user(0, name->nodename + __OLD_UTS_LEN);
+        error |= __copy_to_user(&name->release, &utsname()->release,
+                                __OLD_UTS_LEN);
+        error |= __put_user(0, name->release + __OLD_UTS_LEN);
+        error |= __copy_to_user(&name->version, &utsname()->version,
+                                __OLD_UTS_LEN);
+        error |= __put_user(0, name->version + __OLD_UTS_LEN);
+        error |= __copy_to_user(&name->machine, &utsname()->machine,
+                                __OLD_UTS_LEN);
+        error |= __put_user(0, name->machine + __OLD_UTS_LEN);
         
         up_read(&uts_sem);
         
diff --git a/arch/ia64/sn/kernel/sn2/sn_hwperf.c b/arch/ia64/sn/kernel/sn2/sn_hwperf.c
index b632b9c1e3b3..462ea178f49a 100644
--- a/arch/ia64/sn/kernel/sn2/sn_hwperf.c
+++ b/arch/ia64/sn/kernel/sn2/sn_hwperf.c
@@ -423,7 +423,7 @@ static int sn_topology_show(struct seq_file *s, void *d)
                         "coherency_domain %d, "
                         "region_size %d\n",
 
-                        partid, system_utsname.nodename,
+                        partid, utsname()->nodename,
                         shubtype ? "shub2" : "shub1", 
                         (u64)nasid_mask << nasid_shift, nasid_msb, nasid_shift,
                         system_size, sharing_size, coher, region_size);
diff --git a/arch/m32r/kernel/sys_m32r.c b/arch/m32r/kernel/sys_m32r.c
index a9cea32eb824..7c29396cc670 100644
--- a/arch/m32r/kernel/sys_m32r.c
+++ b/arch/m32r/kernel/sys_m32r.c
@@ -205,7 +205,7 @@ asmlinkage int sys_uname(struct old_utsname * 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);
         return err?-EFAULT:0;
 }
diff --git a/arch/mips/kernel/linux32.c b/arch/mips/kernel/linux32.c
index 43b1162d714f..52cada45b353 100644
--- a/arch/mips/kernel/linux32.c
+++ b/arch/mips/kernel/linux32.c
@@ -1039,7 +1039,7 @@ asmlinkage long sys32_newuname(struct new_utsname __user * name)
         int ret = 0;
 
         down_read(&uts_sem);
-        if (copy_to_user(name,&system_utsname,sizeof *name))
+        if (copy_to_user(name, utsname(), sizeof *name))
                 ret = -EFAULT;
         up_read(&uts_sem);
 
diff --git a/arch/mips/kernel/syscall.c b/arch/mips/kernel/syscall.c
index 9951240cc3fd..970e3e96b1d0 100644
--- a/arch/mips/kernel/syscall.c
+++ b/arch/mips/kernel/syscall.c
@@ -231,7 +231,7 @@ out:
  */
 asmlinkage int sys_uname(struct old_utsname __user * name)
 {
-        if (name && !copy_to_user(name, &system_utsname, sizeof (*name)))
+        if (name && !copy_to_user(name, utsname(), sizeof (*name)))
                 return 0;
         return -EFAULT;
 }
@@ -248,16 +248,21 @@ asmlinkage int sys_olduname(struct oldold_utsname __user * name)
         if (!access_ok(VERIFY_WRITE,name,sizeof(struct oldold_utsname)))
                 return -EFAULT;
 
-        error = __copy_to_user(&name->sysname,&system_utsname.sysname,__OLD_UTS_LEN);
-        error -= __put_user(0,name->sysname+__OLD_UTS_LEN);
-        error -= __copy_to_user(&name->nodename,&system_utsname.nodename,__OLD_UTS_LEN);
-        error -= __put_user(0,name->nodename+__OLD_UTS_LEN);
-        error -= __copy_to_user(&name->release,&system_utsname.release,__OLD_UTS_LEN);
-        error -= __put_user(0,name->release+__OLD_UTS_LEN);
-        error -= __copy_to_user(&name->version,&system_utsname.version,__OLD_UTS_LEN);
-        error -= __put_user(0,name->version+__OLD_UTS_LEN);
-        error -= __copy_to_user(&name->machine,&system_utsname.machine,__OLD_UTS_LEN);
-        error = __put_user(0,name->machine+__OLD_UTS_LEN);
+        error = __copy_to_user(&name->sysname, &utsname()->sysname,
+                               __OLD_UTS_LEN);
+        error -= __put_user(0, name->sysname + __OLD_UTS_LEN);
+        error -= __copy_to_user(&name->nodename, &utsname()->nodename,
+                                __OLD_UTS_LEN);
+        error -= __put_user(0, name->nodename + __OLD_UTS_LEN);
+        error -= __copy_to_user(&name->release, &utsname()->release,
+                                __OLD_UTS_LEN);
+        error -= __put_user(0, name->release + __OLD_UTS_LEN);
+        error -= __copy_to_user(&name->version, &utsname()->version,
+                                __OLD_UTS_LEN);
+        error -= __put_user(0, name->version + __OLD_UTS_LEN);
+        error -= __copy_to_user(&name->machine, &utsname()->machine,
+                                __OLD_UTS_LEN);
+        error = __put_user(0, name->machine + __OLD_UTS_LEN);
         error = error ? -EFAULT : 0;
 
         return error;
diff --git a/arch/mips/kernel/sysirix.c b/arch/mips/kernel/sysirix.c
index 1137dd6ea7aa..11bb97174972 100644
--- a/arch/mips/kernel/sysirix.c
+++ b/arch/mips/kernel/sysirix.c
@@ -884,7 +884,7 @@ asmlinkage int irix_getdomainname(char __user *name, int len)
         down_read(&uts_sem);
         if (len > __NEW_UTS_LEN)
                 len = __NEW_UTS_LEN;
-        err = copy_to_user(name, system_utsname.domainname, len) ? -EFAULT : 0;
+        err = copy_to_user(name, utsname()->domainname, len) ? -EFAULT : 0;
         up_read(&uts_sem);
 
         return err;
@@ -1127,11 +1127,11 @@ struct iuname {
 asmlinkage int irix_uname(struct iuname __user *buf)
 {
         down_read(&uts_sem);
-        if (copy_from_user(system_utsname.sysname, buf->sysname, 65)
-            || copy_from_user(system_utsname.nodename, buf->nodename, 65)
-            || copy_from_user(system_utsname.release, buf->release, 65)
-            || copy_from_user(system_utsname.version, buf->version, 65)
-            || copy_from_user(system_utsname.machine, buf->machine, 65)) {
+        if (copy_from_user(utsname()->sysname, buf->sysname, 65)
+            || copy_from_user(utsname()->nodename, buf->nodename, 65)
+            || copy_from_user(utsname()->release, buf->release, 65)
+            || copy_from_user(utsname()->version, buf->version, 65)
+            || copy_from_user(utsname()->machine, buf->machine, 65)) {
                 return -EFAULT;
         }
         up_read(&uts_sem);
diff --git a/arch/parisc/hpux/sys_hpux.c b/arch/parisc/hpux/sys_hpux.c
index cb69727027ae..2e2dc4f2c853 100644
--- a/arch/parisc/hpux/sys_hpux.c
+++ b/arch/parisc/hpux/sys_hpux.c
@@ -266,16 +266,21 @@ static int hpux_uname(struct hpux_utsname *name)
 
         down_read(&uts_sem);
 
-        error = __copy_to_user(&name->sysname,&system_utsname.sysname,HPUX_UTSLEN-1);
-        error |= __put_user(0,name->sysname+HPUX_UTSLEN-1);
-        error |= __copy_to_user(&name->nodename,&system_utsname.nodename,HPUX_UTSLEN-1);
-        error |= __put_user(0,name->nodename+HPUX_UTSLEN-1);
-        error |= __copy_to_user(&name->release,&system_utsname.release,HPUX_UTSLEN-1);
-        error |= __put_user(0,name->release+HPUX_UTSLEN-1);
-        error |= __copy_to_user(&name->version,&system_utsname.version,HPUX_UTSLEN-1);
-        error |= __put_user(0,name->version+HPUX_UTSLEN-1);
-        error |= __copy_to_user(&name->machine,&system_utsname.machine,HPUX_UTSLEN-1);
-        error |= __put_user(0,name->machine+HPUX_UTSLEN-1);
+        error = __copy_to_user(&name->sysname, &utsname()->sysname,
+                               HPUX_UTSLEN - 1);
+        error |= __put_user(0, name->sysname + HPUX_UTSLEN - 1);
+        error |= __copy_to_user(&name->nodename, &utsname()->nodename,
+                                HPUX_UTSLEN - 1);
+        error |= __put_user(0, name->nodename + HPUX_UTSLEN - 1);
+        error |= __copy_to_user(&name->release, &utsname()->release,
+                                HPUX_UTSLEN - 1);
+        error |= __put_user(0, name->release + HPUX_UTSLEN - 1);
+        error |= __copy_to_user(&name->version, &utsname()->version,
+                                HPUX_UTSLEN - 1);
+        error |= __put_user(0, name->version + HPUX_UTSLEN - 1);
+        error |= __copy_to_user(&name->machine, &utsname()->machine,
+                                HPUX_UTSLEN - 1);
+        error |= __put_user(0, name->machine + HPUX_UTSLEN - 1);
 
         up_read(&uts_sem);
 
@@ -373,8 +378,8 @@ int hpux_utssys(char *ubuf, int n, int type)
                 /*  TODO:  print a warning about using this?  */
                 down_write(&uts_sem);
                 error = -EFAULT;
-                if (!copy_from_user(system_utsname.sysname, ubuf, len)) {
-                        system_utsname.sysname[len] = 0;
+                if (!copy_from_user(utsname()->sysname, ubuf, len)) {
+                        utsname()->sysname[len] = 0;
                         error = 0;
                 }
                 up_write(&uts_sem);
@@ -400,8 +405,8 @@ int hpux_utssys(char *ubuf, int n, int type)
                 /*  TODO:  print a warning about this?  */
                 down_write(&uts_sem);
                 error = -EFAULT;
-                if (!copy_from_user(system_utsname.release, ubuf, len)) {
-                        system_utsname.release[len] = 0;
+                if (!copy_from_user(utsname()->release, ubuf, len)) {
+                        utsname()->release[len] = 0;
                         error = 0;
                 }
                 up_write(&uts_sem);
@@ -422,13 +427,13 @@ int hpux_getdomainname(char *name, int len)
         
         down_read(&uts_sem);
         
-        nlen = strlen(system_utsname.domainname) + 1;
+        nlen = strlen(utsname()->domainname) + 1;
 
         if (nlen < len)
                 len = nlen;
         if(len > __NEW_UTS_LEN)
                 goto done;
-        if(copy_to_user(name, system_utsname.domainname, len))
+        if(copy_to_user(name, utsname()->domainname, len))
                 goto done;
         err = 0;
 done:
diff --git a/arch/powerpc/kernel/syscalls.c b/arch/powerpc/kernel/syscalls.c
index 9b69d99a9103..d358866b880f 100644
--- a/arch/powerpc/kernel/syscalls.c
+++ b/arch/powerpc/kernel/syscalls.c
@@ -260,7 +260,7 @@ long ppc_newuname(struct new_utsname __user * name)
         int err = 0;
 
         down_read(&uts_sem);
-        if (copy_to_user(name, &system_utsname, sizeof(*name)))
+        if (copy_to_user(name, utsname(), sizeof(*name)))
                 err = -EFAULT;
         up_read(&uts_sem);
         if (!err)
@@ -273,7 +273,7 @@ int sys_uname(struct old_utsname __user *name)
         int err = 0;
         
         down_read(&uts_sem);
-        if (copy_to_user(name, &system_utsname, sizeof(*name)))
+        if (copy_to_user(name, utsname(), sizeof(*name)))
                 err = -EFAULT;
         up_read(&uts_sem);
         if (!err)
@@ -289,19 +289,19 @@ int sys_olduname(struct oldold_utsname __user *name)
                 return -EFAULT;
   
         down_read(&uts_sem);
-        error = __copy_to_user(&name->sysname, &system_utsname.sysname,
+        error = __copy_to_user(&name->sysname, &utsname()->sysname,
                                __OLD_UTS_LEN);
         error |= __put_user(0, name->sysname + __OLD_UTS_LEN);
-        error |= __copy_to_user(&name->nodename, &system_utsname.nodename,
+        error |= __copy_to_user(&name->nodename, &utsname()->nodename,
                                 __OLD_UTS_LEN);
         error |= __put_user(0, name->nodename + __OLD_UTS_LEN);
-        error |= __copy_to_user(&name->release, &system_utsname.release,
+        error |= __copy_to_user(&name->release, &utsname()->release,
                                 __OLD_UTS_LEN);
         error |= __put_user(0, name->release + __OLD_UTS_LEN);
-        error |= __copy_to_user(&name->version, &system_utsname.version,
+        error |= __copy_to_user(&name->version, &utsname()->version,
                                 __OLD_UTS_LEN);
         error |= __put_user(0, name->version + __OLD_UTS_LEN);
-        error |= __copy_to_user(&name->machine, &system_utsname.machine,
+        error |= __copy_to_user(&name->machine, &utsname()->machine,
                                 __OLD_UTS_LEN);
         error |= override_machine(name->machine);
         up_read(&uts_sem);
diff --git a/arch/sh/kernel/sys_sh.c b/arch/sh/kernel/sys_sh.c
index b68ff705f067..11c2acde6eaa 100644
--- a/arch/sh/kernel/sys_sh.c
+++ b/arch/sh/kernel/sys_sh.c
@@ -281,7 +281,7 @@ asmlinkage int sys_uname(struct old_utsname * 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);
         return err?-EFAULT:0;
 }
diff --git a/arch/sh64/kernel/sys_sh64.c b/arch/sh64/kernel/sys_sh64.c
index 58ff7d522d81..c6de1a95af44 100644
--- a/arch/sh64/kernel/sys_sh64.c
+++ b/arch/sh64/kernel/sys_sh64.c
@@ -279,7 +279,7 @@ asmlinkage int sys_uname(struct old_utsname * 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);
         return err?-EFAULT:0;
 }
diff --git a/arch/sparc/kernel/sys_sparc.c b/arch/sparc/kernel/sys_sparc.c
index 896863fb208a..002ab4dbe5cb 100644
--- a/arch/sparc/kernel/sys_sparc.c
+++ b/arch/sparc/kernel/sys_sparc.c
@@ -475,13 +475,13 @@ asmlinkage int sys_getdomainname(char __user *name, int len)
 
         down_read(&uts_sem);
         
-        nlen = strlen(system_utsname.domainname) + 1;
+        nlen = strlen(utsname()->domainname) + 1;
         err = -EINVAL;
         if (nlen > len)
                 goto out;
 
         err = -EFAULT;
-        if (!copy_to_user(name, system_utsname.domainname, nlen))
+        if (!copy_to_user(name, utsname()->domainname, nlen))
                 err = 0;
 
 out:
diff --git a/arch/sparc/kernel/sys_sunos.c b/arch/sparc/kernel/sys_sunos.c
index aa0fb2efb615..9d2cd97d1c3a 100644
--- a/arch/sparc/kernel/sys_sunos.c
+++ b/arch/sparc/kernel/sys_sunos.c
@@ -483,13 +483,18 @@ asmlinkage int sunos_uname(struct sunos_utsname __user *name)
 {
         int ret;
         down_read(&uts_sem);
-        ret = copy_to_user(&name->sname[0], &system_utsname.sysname[0], sizeof(name->sname) - 1);
+        ret = copy_to_user(&name->sname[0], &utsname()->sysname[0],
+                           sizeof(name->sname) - 1);
         if (!ret) {
-                ret |= __copy_to_user(&name->nname[0], &system_utsname.nodename[0], sizeof(name->nname) - 1);
+                ret |= __copy_to_user(&name->nname[0], &utsname()->nodename[0],
+                                      sizeof(name->nname) - 1);
                 ret |= __put_user('\0', &name->nname[8]);
-                ret |= __copy_to_user(&name->rel[0], &system_utsname.release[0], sizeof(name->rel) - 1);
-                ret |= __copy_to_user(&name->ver[0], &system_utsname.version[0], sizeof(name->ver) - 1);
-                ret |= __copy_to_user(&name->mach[0], &system_utsname.machine[0], sizeof(name->mach) - 1);
+                ret |= __copy_to_user(&name->rel[0], &utsname()->release[0],
+                                      sizeof(name->rel) - 1);
+                ret |= __copy_to_user(&name->ver[0], &utsname()->version[0],
+                                      sizeof(name->ver) - 1);
+                ret |= __copy_to_user(&name->mach[0], &utsname()->machine[0],
+                                      sizeof(name->mach) - 1);
         }
         up_read(&uts_sem);
         return ret ? -EFAULT : 0;
diff --git a/arch/sparc64/kernel/sys_sparc.c b/arch/sparc64/kernel/sys_sparc.c
index c608c947e6c3..89ac435aacc0 100644
--- a/arch/sparc64/kernel/sys_sparc.c
+++ b/arch/sparc64/kernel/sys_sparc.c
@@ -712,13 +712,13 @@ asmlinkage long sys_getdomainname(char __user *name, int len)
 
         down_read(&uts_sem);
         
-        nlen = strlen(system_utsname.domainname) + 1;
+        nlen = strlen(utsname()->domainname) + 1;
         err = -EINVAL;
         if (nlen > len)
                 goto out;
 
         err = -EFAULT;
-        if (!copy_to_user(name, system_utsname.domainname, nlen))
+        if (!copy_to_user(name, utsname()->domainname, nlen))
                 err = 0;
 
 out:
diff --git a/arch/sparc64/kernel/sys_sunos32.c b/arch/sparc64/kernel/sys_sunos32.c
index 87ebdf858a3a..953296b73f3f 100644
--- a/arch/sparc64/kernel/sys_sunos32.c
+++ b/arch/sparc64/kernel/sys_sunos32.c
@@ -439,16 +439,16 @@ asmlinkage int sunos_uname(struct sunos_utsname __user *name)
         int ret;
 
         down_read(&uts_sem);
-        ret = copy_to_user(&name->sname[0], &system_utsname.sysname[0],
+        ret = copy_to_user(&name->sname[0], &utsname()->sysname[0],
                            sizeof(name->sname) - 1);
-        ret |= copy_to_user(&name->nname[0], &system_utsname.nodename[0],
+        ret |= copy_to_user(&name->nname[0], &utsname()->nodename[0],
                             sizeof(name->nname) - 1);
         ret |= put_user('\0', &name->nname[8]);
-        ret |= copy_to_user(&name->rel[0], &system_utsname.release[0],
+        ret |= copy_to_user(&name->rel[0], &utsname()->release[0],
                             sizeof(name->rel) - 1);
-        ret |= copy_to_user(&name->ver[0], &system_utsname.version[0],
+        ret |= copy_to_user(&name->ver[0], &utsname()->version[0],
                             sizeof(name->ver) - 1);
-        ret |= copy_to_user(&name->mach[0], &system_utsname.machine[0],
+        ret |= copy_to_user(&name->mach[0], &utsname()->machine[0],
                             sizeof(name->mach) - 1);
         up_read(&uts_sem);
         return (ret ? -EFAULT : 0);
diff --git a/arch/sparc64/solaris/misc.c b/arch/sparc64/solaris/misc.c
index 9c581328e76a..9ed997982f8d 100644
--- a/arch/sparc64/solaris/misc.c
+++ b/arch/sparc64/solaris/misc.c
@@ -249,7 +249,7 @@ asmlinkage int solaris_utssys(u32 buf, u32 flags, int which, u32 buf2)
                 /* Let's cheat */
                 err  = set_utsfield(v->sysname, "SunOS", 1, 0);
                 down_read(&uts_sem);
-                err |= set_utsfield(v->nodename, system_utsname.nodename,
+                err |= set_utsfield(v->nodename, utsname()->nodename,
                                     1, 1);
                 up_read(&uts_sem);
                 err |= set_utsfield(v->release, "2.6", 0, 0);
@@ -273,7 +273,7 @@ asmlinkage int solaris_utsname(u32 buf)
         /* Why should we not lie a bit? */
         down_read(&uts_sem);
         err  = set_utsfield(v->sysname, "SunOS", 0, 0);
-        err |= set_utsfield(v->nodename, system_utsname.nodename, 1, 1);
+        err |= set_utsfield(v->nodename, utsname()->nodename, 1, 1);
         err |= set_utsfield(v->release, "5.6", 0, 0);
         err |= set_utsfield(v->version, "Generic", 0, 0);
         err |= set_utsfield(v->machine, machine(), 0, 0);
@@ -305,7 +305,7 @@ asmlinkage int solaris_sysinfo(int cmd, u32 buf, s32 count)
         case SI_HOSTNAME:
                 r = buffer + 256;
                 down_read(&uts_sem);
-                for (p = system_utsname.nodename, q = buffer; 
+                for (p = utsname()->nodename, q = buffer;
                      q < r && *p && *p != '.'; *q++ = *p++);
                 up_read(&uts_sem);
                 *q = 0;
diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c
index 773a134e7fdb..a67dcbd78de4 100644
--- a/arch/um/drivers/mconsole_kern.c
+++ b/arch/um/drivers/mconsole_kern.c
@@ -106,9 +106,9 @@ void mconsole_version(struct mc_request *req)
 {
         char version[256];
 
-        sprintf(version, "%s %s %s %s %s", system_utsname.sysname,
-                system_utsname.nodename, system_utsname.release,
-                system_utsname.version, system_utsname.machine);
+        sprintf(version, "%s %s %s %s %s", utsname()->sysname,
+                utsname()->nodename, utsname()->release,
+                utsname()->version, utsname()->machine);
         mconsole_reply(req, version, 0, 0);
 }
 
diff --git a/arch/um/kernel/syscall.c b/arch/um/kernel/syscall.c
index 48cf88dd02d4..abf14aaf905f 100644
--- a/arch/um/kernel/syscall.c
+++ b/arch/um/kernel/syscall.c
@@ -110,7 +110,7 @@ long sys_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);
         return err?-EFAULT:0;
 }
@@ -126,21 +126,21 @@ long sys_olduname(struct oldold_utsname __user * name)
 
         down_read(&uts_sem);
 
-        error = __copy_to_user(&name->sysname,&system_utsname.sysname,
+        error = __copy_to_user(&name->sysname, &utsname()->sysname,
                                __OLD_UTS_LEN);
-        error |= __put_user(0,name->sysname+__OLD_UTS_LEN);
-        error |= __copy_to_user(&name->nodename,&system_utsname.nodename,
+        error |= __put_user(0, name->sysname + __OLD_UTS_LEN);
+        error |= __copy_to_user(&name->nodename, &utsname()->nodename,
                                 __OLD_UTS_LEN);
-        error |= __put_user(0,name->nodename+__OLD_UTS_LEN);
-        error |= __copy_to_user(&name->release,&system_utsname.release,
+        error |= __put_user(0, name->nodename + __OLD_UTS_LEN);
+        error |= __copy_to_user(&name->release, &utsname()->release,
                                 __OLD_UTS_LEN);
-        error |= __put_user(0,name->release+__OLD_UTS_LEN);
-        error |= __copy_to_user(&name->version,&system_utsname.version,
+        error |= __put_user(0, name->release + __OLD_UTS_LEN);
+        error |= __copy_to_user(&name->version, &utsname()->version,
                                 __OLD_UTS_LEN);
-        error |= __put_user(0,name->version+__OLD_UTS_LEN);
-        error |= __copy_to_user(&name->machine,&system_utsname.machine,
+        error |= __put_user(0, name->version + __OLD_UTS_LEN);
+        error |= __copy_to_user(&name->machine, &utsname()->machine,
                                 __OLD_UTS_LEN);
-        error |= __put_user(0,name->machine+__OLD_UTS_LEN);
+        error |= __put_user(0, name->machine + __OLD_UTS_LEN);
 
         up_read(&uts_sem);
 
diff --git a/arch/um/sys-x86_64/syscalls.c b/arch/um/sys-x86_64/syscalls.c
index 6fce9f45dfdc..73ce4463f70c 100644
--- a/arch/um/sys-x86_64/syscalls.c
+++ b/arch/um/sys-x86_64/syscalls.c
@@ -21,7 +21,7 @@ asmlinkage long sys_uname64(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);
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);                 
diff --git a/arch/xtensa/kernel/syscalls.c b/arch/xtensa/kernel/syscalls.c
index 4688ba2db84d..37c90ca5b98d 100644
--- a/arch/xtensa/kernel/syscalls.c
+++ b/arch/xtensa/kernel/syscalls.c
@@ -128,7 +128,7 @@ out:
 
 int sys_uname(struct old_utsname * name)
 {
-        if (name && !copy_to_user(name, &system_utsname, sizeof (*name)))
+        if (name && !copy_to_user(name, utsname(), sizeof (*name)))
                 return 0;
         return -EFAULT;
 }