Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

[linux-2.6] / arch / parisc / kernel / sys_parisc.c

diff --git a/arch/parisc/kernel/sys_parisc.c b/arch/parisc/kernel/sys_parisc.c
index 8b5df98e2b3158a229226cdb233e43349c950e4c..1db5588ceacf7474ebba8d947b6b7c31da09a906 100644 (file)
--- a/arch/parisc/kernel/sys_parisc.c
+++ b/arch/parisc/kernel/sys_parisc.c
@@ -31,6 +31,8 @@
 #include <linux/shm.h>
 #include <linux/smp_lock.h>
 #include <linux/syscalls.h>
+#include <linux/utsname.h>
+#include <linux/personality.h>
 
 int sys_pipe(int __user *fildes)
 {
@@ -248,3 +250,46 @@ asmlinkage int sys_free_hugepages(unsigned long addr)
 {
        return -EINVAL;
 }
+
+long parisc_personality(unsigned long personality)
+{
+       long err;
+
+       if (personality(current->personality) == PER_LINUX32
+           && personality == PER_LINUX)
+               personality = PER_LINUX32;
+
+       err = sys_personality(personality);
+       if (err == PER_LINUX32)
+               err = PER_LINUX;
+
+       return err;
+}
+
+static inline int override_machine(char __user *mach) {
+#ifdef CONFIG_COMPAT
+       if (personality(current->personality) == PER_LINUX32) {
+               if (__put_user(0, mach + 6) ||
+                   __put_user(0, mach + 7))
+                       return -EFAULT;
+       }
+
+       return 0;
+#else /*!CONFIG_COMPAT*/
+       return 0;
+#endif /*CONFIG_COMPAT*/
+}
+
+long parisc_newuname(struct new_utsname __user *utsname)
+{
+       int err = 0;
+
+       down_read(&uts_sem);
+       if (copy_to_user(utsname, &system_utsname, sizeof(*utsname)))
+               err = -EFAULT;
+       up_read(&uts_sem);
+
+       err = override_machine(utsname->machine);
+
+       return (long)err;
+}